CN102562252B

CN102562252B - Electromagnetic fan clutch and manufacturing and control methods thereof

Info

Publication number: CN102562252B
Application number: CN201210007482.4A
Authority: CN
Inventors: 王兆宇; 邢子义; 李殿赟
Original assignee: LONGKOU ZHONGYU MACHINERY CO Ltd
Current assignee: LONGKOU ZHONGYU MACHINERY CO Ltd
Priority date: 2012-01-11
Filing date: 2012-01-11
Publication date: 2014-04-16
Anticipated expiration: 2032-01-11
Also published as: CN102562252A

Abstract

The invention relates to an electromagnetic fan clutch, in particular to a three-speed electromagnetic fan clutch, which is used for cooling car engines and capable of enabling the fan to have three rotation speeds by controlling on and off of two electric control devices and guaranteeing full-speed rotation of the fan on emergency interruption. The electromagnetic fan clutch comprises a transmission shaft, a transmission disc, a fan fixing disc, a magnet fixing disc, a second electric control device, a first transmission device, a second transmission device and a first electric control device, wherein the second transmission device is fixedly connected with the fan fixing disc. When being powered on, the first electric control device drives the first transmission device to separate the second transmission device from the transmission disc; and when being powered off, the first electric control device drives the first transmission device to realize connection of the second transmission device and the transmission disc. The invention further relates to manufacturing and control methods of the electromagnetic fan clutch.

Description

Electromagnetic fan clutch and manufacture method thereof and controlling method

Technical field

The present invention relates to vehicle cooling equipment technical field, particularly relate to a kind of for controlling the three-speed electromagnetic fan clutch of automobile engine cooling fan rotating speed.The invention still further relates to manufacture method and the controlling method of above-mentioned three-speed electromagnetic fan clutch.

Background technique

At present, the electromagnetic fan clutch using on automobile, is according to the water temperature of motor, to change to control the rotating speed of fan, thereby makes motor car engine in running, keep the optimum state.Specifically by control coil on electromagnetic core electric or power-off come adhesive dish in controlling magnet fixed tray or fan fixed disk with the adhesive of drive plate with separation, thereby the rotating speed of fan in control fan fixed disk, reach make fan with suitable rotating speed the effect to engine cooling.

Existing electromagnetic fan clutch (take three-speed electromagnetic fan clutch as example) as shown in Figure 1, comprise main shaft 1 ', drive plate 2 ', electromagnetic core 3 ', exterior loop 4a ', interior loop 4b ', fan fixed disk 9 ', magnet fixed disc 10 ', submissile reed 12 ', little adhesive dish 13 ', big spring sheet 34 ', large adhesive dish 35 ' and guard plate 36 ', the drive plate 2 ' of wherein being made by permeability magnetic material is fixedly mounted on main shaft 1 ' by woodruff key 19 ', the side of drive plate 2 ' is provided with some groups of magnet isolation tanks 23 ', the inner chamber of drive plate 2 ' is provided with electromagnetic core 3 ', electromagnetic core 3 ' is arranged on main shaft 1 ' by bearing 5 ', in being respectively equipped with in electromagnetic core 3 ', exterior loop embedding groove, in, the magnetic conduction opening direction of exterior loop inserting slot is all identical with main shaft 1 ' axial direction and point to the side of drive plate 2 ', in, in being provided with flat winding respectively in exterior loop embedding groove, exterior loop 4b ', 4a ', fan fixed disk 9 ' is passed through respectively bearing 8 ' with magnet fixed

disc

10 ', 11 ' is arranged on main shaft 1 ', wherein magnet fixed disc 10 ' is positioned at fan fixed disk 9 ' inner chamber, on a side end face of magnet fixed disc 10 ', be uniformly distributed with several fixed holes along the circumference and be used for inlaying soft magnet 15 ', on soft magnet 15 ', pick permanent magnet 14 ', on the upper corresponding end face with permanent magnet 14 ' of fan fixed disk 9 ', be inlaid with soft magnet 16 ', on the upper annular end face relative with interior loop 4b ' of magnet fixed disc 10 ', by the 12 ' support and connection of submissile reed, there is little adhesive dish 13 ', on the upper annular end face relative with exterior loop 4a ' of fan fixed disk 9 ', by the 34 ' support and connection of big spring sheet, there is large adhesive dish 35 ', greatly, little adhesive dish 13 ', 35 ' all near the side of drive plate 2 ', with gapped between the corresponding end face of drive plate 2 ', outside the circumferential position of fan fixed disk 9 ', on end face, be fixedly connected with guard plate 36 ', on guard plate 36 ', offer locking hole, the circumferential position outside corresponding position upper and locking hole of drive plate 2 ' offers matching hole.

The specific works process of above-mentioned three-speed electromagnetic fan clutch is: when engine temperature not yet reaches the lower set temperature value (such as being made as 82 ℃) of three-speed electromagnetic fan clutch, inside and outside coil 4b ', 4a ' in electromagnetic core 3 ' be no electric circuit all, the little adhesive dish 13 ' of drive plate 2 ' on can adhesive magnet fixed disc 10 ', also the large adhesive dish 35 ' in not adhesive fan fixed disk 9 ', fan fixed disk 9 ' is by bearing 8 ' free rotary, and magnet fixed disc 10 ' is by bearing 11 ' free rotary, when engine temperature reaches lower set temperature value (82 ℃) and during lower than higher set temperature value (such as being made as 88 ℃), interior loop 4b ' obtains electric, because the magnetic effect of electromagnetic core 3 ' makes the little adhesive dish 13 ' of drive plate 2 ' adhesive, make little adhesive dish 13 ' and drive plate 2 ' synchronous rotary, little adhesive dish 13 ' drives magnet fixed disc 10 ' rotation at full speed by submissile reed 12 ', be embedded in relative rotation in the magnetic field that soft magnet 16 ' in the fan fixed disk 9 ' permanent magnet 14 ' in magnet fixed disc 10 ' forms with soft magnet 15 ', cutting magnetic line, himself produces foucault current, foucault current produces new magnetic field, under the effect of magnetic force, realize fan fixed disk 9 ' and flexibly connect middling speed rotation with magnet fixed disc 10 ', play the effect of preliminary radiating and cooling, when engine temperature is elevated to higher temperature setting value (88 ℃), exterior loop 4b ' obtains electric, produce the suction-combining force, large adhesive dish 35 ' adhesive is arrived on drive plate 2 ', large adhesive dish 35 ' is with drive plate 2 ' synchronous rotary, large adhesive dish 35 ' drives fan fixed disk 9 ' rotation at full speed by big spring sheet 34 ', thereby plays the effect of powerful cooling.

But, vehicle in the process of moving, if the unexpected power-off of power supply system catastrophic failure of electromagnetic fan clutch, inside and outside coil 4b ', 4a ' act on inefficacy, now just can not be by controlling rotating speed that the energising power-off of inside and outside coil 4b ', 4a ' controls the fan blade in fan fixed disk 9 ' with to engine cooling.Certainly, in the former project organization of electromagnetic fan clutch, conventionally there is the guard plate 36 ' and corresponding locking hole, matching hole that are used in conjunction with the urgent lock bolt carrying with car, driver can be stopped as early as possible after the power supply system of electromagnetic fan clutch breaks down, then urgent lock bolt is inserted in the matching hole on locking hole and the drive plate 2 ' on guard plate 36 ', so that fan fixed disk 9 ' and drive plate 2 ' synchronous rotary are rotated to engine cooling fan at full speed.If driver learns that power supply system breaks down when driving, after can stopping, use urgent lock bolt that fan fixed disk 9 ' is fixing with drive plate 2 ', make fan rotation cooling at full speed; But driver often cannot guarantee to learn failure condition in the very first time, thereby the urgent lock bolt of employing that can not stop in time, and the urgent lock bolt of installation that stops also bothers; Even if driver can learn power supply system fault in the very first time, but the road conditions of automobile actual motion are complicated and changeable, under some specific run environment, driver can not be stopped, or cannot stop at once and take bolt-locking measure, may therefore cause engine high-temperature damage or even scrap, in serious situation, even can therefore cause traffic accident, consequence is hardly imaginable.In addition, as shown in Figure 1, when engine water temperature is elevated to higher temperature setting value (88 ℃), in order to meet: exterior loop 4a ' can make electromagnetic core 3 ' there is enough large magnetic after electric, with the large adhesive dish 35 ' adhesive that will be fixedly connected with fan fixed disk 9 ', arrive on drive plate 2 ', and can drive fan fixed disk 9 ' and the synchronized rotation of drive plate 2 ', just need motor to provide lasting electric power to exterior loop 4a ', so not only consumed more electric energy, and increased the loss of engine power, make the original just overload operation more of the motor in the condition of high temperature, reduced the working life of motor.

At present, for the air pump device of brake and drive system for vehicle with tow, in Vehicle Driving Cycle process, to utilize the energising of magnetic clutch or power-off to control the work of air pump, in air pump internal pressure during lower than the required force value of brake system work (such as 6-8 kilogram), the power supply system of magnetic clutch is given electricity, utilize the suction-combining force of electromagnetic core that the parts that drive air pump rotating shaft running are connected with the belt pulley (belt pulley passes through driven by engine) of rotation, make air pump rotating shaft and belt pulley run-in synchronism, thereby reach the object that makes air pump in running order; When air pump internal pressure meets or exceeds the required force value of brake system work (such as 6-8 kilogram), the power supply system power-off of magnetic clutch, air pump rotating shaft is separation with belt pulley, and air pump quits work.But, if running into the power supply system of magnetic clutch in Vehicle Driving Cycle process breaks down, sudden power-off, or there is other faults in magnetic clutch, the so now uncontrollable air pump work of magnetic clutch, affects the effect performance of air pump, causes brake system cisco unity malfunction, and then may bring a series of serious consequence, can not give safety guarantee of driver; Certainly, the safeguard construction that prevents that air pump control system lost efficacy is also installed on existing part vehicle, but the use of these safeguard constructions all needs parking, and manually enable anti-failure structure, thereby there is certain narrow limitation.

Summary of the invention

In order to solve the problems of the technologies described above, the invention provides a kind of simple in structure, safe and reliable, can prevent because of fan fixed disk that in driving process, magnetic clutch catastrophic failure causes can not be to the safety type electromagnetic fan clutch device of engine cooling.

Another technical purpose of the present invention is to provide the manufacture method of the above-mentioned electromagnetic fan clutch with anti-Fail safe device.

Another technical purpose of the present invention is to provide the controlling method of the above-mentioned electromagnetic fan clutch with anti-Fail safe device.

A kind of electromagnetic fan clutch of the present invention, comprise transmission shaft, drive plate, fan fixed disk, magnet fixed disc and the second electric controller, described drive plate is fixedly mounted on described transmission shaft, described fan fixed disk is arranged on described transmission shaft by clutch shaft bearing, described magnet fixed disc is arranged on described transmission shaft by the 3rd bearing, described magnet fixed disc is for driving the transfer of described fan fixed disk differential by magnetic effect, when described the second electric controller obtains when electric, described drive plate engages with described magnet fixed disc, when described the second electric controller power-off, described drive plate and described magnet fixed disc are separated, also comprise the first transmission device, the second transmission device and the first electric controller, described the second transmission device is fixedly connected with described fan fixed disk, when described the first electric controller obtains when electric, described the first electric controller drives described the first transmission device that described the second transmission device and described drive plate are separated, when the first electric controller power-off, described the first electric controller drives described the first transmission device that described the second transmission device is engaged with described drive plate.

The invention difference from existing technology is: electromagnetic fan clutch of the present invention has increased safety installations on the basis of existing electromagnetic fan clutch, i.e. the first transmission device and the second transmission device, adopt this structure, guaranteeing that rotation (being free rotary, differential transfer or rotation at full speed) that electromagnetic fan clutch of the present invention can carry out three kinds of friction speeds according to the different temperatures control fan fixed disk of motor is with to engine cooling, so that motor keeps optimum Working; Guarantee that fan can rotate at full speed to engine cooling when power supply system power-off simultaneously, prevent that motor can not dispel the heat in time and cause its excess Temperature in power supply system catastrophic failure situation.And the present invention is designed to: when the first electric controller power-off, drive plate can be by transmission of power to the second transmission device, thereby needn't expend too much electric energy and just can reach the effect of transmission, save electric energy, extend the life-span of power supply system and power supply line.

A kind of electromagnetic fan clutch of the present invention, wherein said the second transmission device comprises transmission cylinder.Adopt transmission cylinder to carry out transmission, manufacture processing simply, transmission is effective, easy for installation.

A kind of electromagnetic fan clutch of the present invention, wherein said the first transmission device comprises at least one driver blade.Between drive plate and transmission cylinder, adopt driver blade structure, so that drive plate and transmission cylinder can be controlled driver blade with power-off by obtaining of the first electric controller is electric, by controlling the motion of driver blade, reach the object that control transmission cylinder is separated or combines with the power of drive plate, and adopt driver blade simple as the first transmission device manufacture processing, cost is low, and transmission is effective; Adopt at least one driver blade, make once a driver blade, to lose efficacy or the reduction of transmission effect in use, other driver blades can continue to play the effect of transmission, have ensured well the overall transmission effect of driver blade.

A kind of electromagnetic fan clutch of the present invention, wherein the structure of the first transmission device driver blade, the second transmission device transmission cylinder and the first electric controller and position relationship can adopt following two kinds of forms:

(1) wherein said driver blade is three arc-like sheets, and the circumferential position outside of described drive plate is provided with three groups of projections, and described three driver blades are hinged on by bearing pin in the complementary protuberance of described drive plate; Described transmission cylinder has the opposing end surface with described drive plate in the circumferential position outside of described drive plate, gapped between the opposing end surface of described driver blade and described transmission cylinder; Described the first electric controller comprises the electromagnet assembly being comprised of electromagnetic core and coil, and described electromagnet assembly is positioned at the inner chamber of the circumferential position place end face of described drive plate.Adopt three arc driver blades to be hinged on drive plate circumferential position outside by bearing pin, install simply, transmission is effective, manufactures easy; Transmission cylinder is located at certain interval position outside the circumferential position of drive plate, makes driver blade when coil blackout under centrifugal action, to compress transmission cylinder, and transmission is effective, and cost is low; And utilize centrifugal force rather than supply with specially power the effect that reaches transmission, saved the energy.

(2) wherein said transmission cylinder has in the circumferential position outside of described drive plate and the opposing end surface of described drive plate, the described opposing end surface of described transmission cylinder is provided with three groups of projections, described driver blade is three arc-like sheets, and described three driver blades are hinged on by bearing pin in the complementary protuberance of described transmission cylinder; Gapped between the opposing end surface of described driver blade and described drive plate; The electromagnet assembly that described the first electric controller comprises permanent magnet and is comprised of electromagnetic core and coil, described permanent magnet is positioned at the inner chamber of described drive plate, and described electromagnet assembly is positioned at the described opposing end surface outside of described transmission cylinder; When electromagnetic core described in described coil obtains when electric is greater than the magnetic attraction of described permanent magnet to described driver blade to the magnetic attraction of described driver blade.Adopt permanent magnet and electromagnet assembly jointly as the first electric controller, to control the motion of driver blade, and correspondingly driver blade is arranged on the inner side end of transmission cylinder, it is the one distortion to structure in above-mentioned (1), this structure also can realize and ought initiatively make coil blackout or in coil accident power-off situation, can be by the first transmission device driver blade and the second transmission device transmission cylinder by the transmission of power of drive plate to fan fixed disk; And the permanent magnet in said structure is to utilize self proper property to play adhesive effect and the electric power providing specially needn't be provided, and has reduced power consumption, has saved the energy.

A kind of electromagnetic fan clutch of the present invention, is fixedly connected with arc friction plate with the opposing end surface place of described transmission cylinder on wherein said driver blade.Employing connects the structure of friction plate on driver blade, makes the transmission effect of driver blade better, and working life is longer.

The manufacture method of a kind of electromagnetic fan clutch of the present invention, comprises the following steps:

(a) form transmission shaft, fan fixed disk, magnet fixed disc, the first electric controller and the second electric controller;

(b) form drive plate;

(c) form the first transmission device;

(d) form the second transmission device;

(e) described the first transmission device, the first electric controller and the second electric controller are installed, described drive plate is fixedly mounted on described transmission shaft, described magnet fixed disc is arranged on described transmission shaft by the 3rd bearing, described the second transmission device is fixed in described fan fixed disk, described fan fixed disk is arranged on described transmission shaft by clutch shaft bearing, described magnet fixed disc can drive the transfer of described fan fixed disk differential, makes:

When described the first electric controller obtains when electric, described the first electric controller drives described the first transmission device that described the second transmission device and described drive plate are separated;

When described the first electric controller power-off, described the first electric controller drives described the first transmission device that described the second transmission device is engaged with described drive plate;

When described the second electric controller obtains when electric, described drive plate engages with described magnet fixed disc;

When described the second electric controller power-off, described drive plate and described magnet fixed disc are separated.

Above-mentioned manufacture method can comprise following two kinds of concrete modes:

(1) the first electric controller in described step (a) is the electromagnet assembly being comprised of electromagnetic core and coil, described electromagnet assembly is arranged on to the inner chamber of the circumferential position place end face of described drive plate; The circumferential position outside of the described drive plate in described step (b) has three groups of projections; The first transmission device in described step (c) is three arc driver blades, and described three driver blades are hinged on by bearing pin in the complementary protuberance of described drive plate; The second transmission device in described step (d) is that transmission cylinder has after installing and the opposing end surface in described drive plate circumferential position outside described in transmission cylinder, gapped between the opposing end surface of described driver blade and described transmission cylinder.

(2) the first transmission device in described step (c) is three arc driver blades; The second transmission device in described step (d) is transmission cylinder, described transmission cylinder has the opposing end surface with described drive plate circumferential position outside after installing, the described opposing end surface inner side of described transmission cylinder has three groups of projections, described three driver blades are hinged on by bearing pin in the complementary protuberance of described transmission cylinder, gapped between end face outside the circumferential position of described driver blade and described drive plate; The first electric controller in described step (a) is permanent magnet and the electromagnet assembly that is comprised of electromagnetic core and coil, described permanent magnet is arranged on to the inner chamber of described drive plate, described electromagnet assembly is arranged on to the described opposing end surface outside of described transmission cylinder; When electromagnetic core described in described coil obtains when electric is greater than the magnetic attraction of described permanent magnet to described driver blade to the magnetic attraction of described driver blade.

Adopt above-mentioned manufacture method, reduce as much as possible the quality of electromagnetic fan clutch, save material, improve the precision of each constituent elements, simplify each modular construction and annexation, guarantee good transmission effect, realize control system of switching on or off electricity transmission, and guarantee that the fan fixed disk in above-mentioned electromagnetic fan clutch can rotate at full speed to engine cooling when the first electric controller power-off.

A kind of controlling method to above-mentioned electromagnetic fan clutch of the present invention, step comprises:

When engine water temperature is during lower than the first setting value, the first electric controller is obtained electric, the second electric controller power-off;

When engine water temperature is equal to or higher than the first setting value and during lower than the second setting value, the first electric controller is obtained electric, the second electric controller obtains electric;

When engine water temperature is equal to or higher than the second setting value, make the first electric controller power-off, the second electric controller obtains electric.

Adopt above-mentioned controlling method, be the cooling needs of motor during according to automobilism, according to the water temperature of motor control the first electric controller electric and power-off, and guarantee that fan fixed disk can be rotated to engine cooling when the first electric controller power-off.

Below in conjunction with accompanying drawing, embodiments of the invention are described further.

Accompanying drawing explanation

Fig. 1 is that the master of three-speed electromagnetic fan clutch of the prior art looks sectional view;

Fig. 2 is that embodiment one master looks sectional view;

Fig. 3 is the sectional view along A-A line direction in Fig. 2;

Fig. 4 is the stereogram of the drive plate in embodiment one;

Fig. 5 is the stereogram of the driver blade in embodiment one;

Fig. 6 a and Fig. 6 b are the stereogram of the electromagnetic core in embodiment one;

Fig. 7 is the right elevation that the drive plate in embodiment one coordinates with driver blade;

Fig. 8 is that the B of Fig. 7 is to view.

Fig. 9 is the right elevation of the transmission cylinder in embodiment one;

Figure 10 is the sectional view along C-C line direction in Fig. 9;

Figure 11 is that embodiment two master looks sectional view;

Figure 12 is that embodiment three master looks sectional view;

Figure 13 is the sectional view along D-D line direction in Figure 12;

Figure 14 is the stereogram of the drive plate in embodiment three;

Figure 15 is the stereogram of the electromagnetic core in embodiment three;

Figure 16 is the right elevation that the drive plate in embodiment three coordinates with driver blade;

Figure 17 is that the E of Figure 16 is to view;

Figure 18 is that embodiment four master looks sectional view;

Figure 19 is that embodiment five master looks sectional view;

Figure 20 is the sectional view along F-F line direction in Figure 19;

Figure 21 is the right elevation that the drive plate in embodiment five coordinates with driver blade;

Figure 22 is that the G of Figure 21 is to view;

Figure 23 is that the master of the transmission cylinder in embodiment five looks sectional view;

Figure 24 is the sectional view along H-H line direction in Figure 23;

Figure 25 is that embodiment six master looks sectional view.

Embodiment

Take the electromagnetic gear being formed by drive plate, the first transmission device, the second transmission device and the first electric controller, be applied in electromagnetic fan clutch on automobile and air pump as example is elaborated by reference to the accompanying drawings below, manufacture method to the equipment in each mode of execution and controlling method are illustrated simultaneously, wherein embodiment one is applied to respectively the mode of execution in single speed, two speed, three-speed electromagnetic fan clutch to three for above-mentioned electromagnetic gear, and the first electric controller and the second electric controller wherein all only include electromagnetic core and coil; Embodiment four is take single speed electromagnetic fan clutch as example, the first electric controller is comprised to the mode of execution of electromagnetic core, coil and permanent magnet describes; Embodiment five, six is applied to the mode of execution in air pump for above-mentioned electromagnetic gear, and wherein the first electric controller in embodiment five only includes electromagnetic core and coil, and the first electric controller in embodiment six comprises electromagnetic core, coil and permanent magnet.

Embodiment one

As shown in Figure 2, a kind of electromagnetic gear, comprise that drive plate 102(as shown in Figure 4), also comprise the first transmission device, the second transmission device and the first electric controller, as shown in Fig. 3, Fig. 7, Fig. 8, wherein the first transmission device comprises three driver blades 106, three driver blades 106 are hinged in the projection 117 on drive plate 102 circumferential positions by bearing pin 124, driver blade 106 be shaped as arc (as shown in Figure 5), the outer surface of driver blade 106 is provided with the repressed arc friction plate 106a being bonded on driver blade 106 of one deck; The second transmission device be transmission cylinder 107(as shown in Figure 9, Figure 10), transmission cylinder 107 has the opposing end surface with drive plate 102 in the circumferential position outside of drive plate 102, gapped between transmission cylinder 107 and friction plate 106a; The first electric controller comprises the electromagnet assembly being comprised of electromagnetic core 103 and coil 104, electromagnet assembly is positioned at drive plate 102 inner chambers, wherein electromagnetic core 103 is arranged on transmission shaft 101 by the second bearing 105, and electromagnetic core 103 is flexible coupling by fixing sebific duct and engine body, drive plate 102 and driver blade 106 are made by permeability magnetic material, as shown in Figure 2, Figure 4 shows, the circumferential position of drive plate 102 is provided with 6 groups of magnet isolation tanks 122.

As shown in Fig. 4, Fig. 7, Fig. 8, the circumferential position outside of drive plate 102 is provided with three projections 117, be evenly distributed on the circumferential position of drive plate 102, three driver blades 106 are hinged in three projections 117 by pin 124, driver blade 106 can by pin 124 do away from or near the rotation of drive plate 102 circumferential positions.

Also comprise passive device, passive device is fan fixed disk 109, as shown in Figure 1, fan fixed disk 109 is arranged on transmission shaft 101 by clutch shaft bearing 108, in conjunction with Fig. 9, shown in Figure 10, three groups of fixed plates 120 on transmission cylinder 107 one end are fixed in fan fixed disk 109 by clamping bolt 118, drive plate 102 is fixedly mounted on transmission shaft 101 by woodruff key 119, electromagnetic core 103 is arranged on transmission shaft 101 by the second bearing 105 at the inner chamber of drive plate 102, in conjunction with Fig. 6 a, shown in Fig. 6 b, coil 104 is located in the coil embedding groove 103a offering on electromagnetic core 103, the magnetic conduction opening direction of coil embedding groove 103a points to the circumferential position of drive plate 102.

When the first electric controller (coil 104) when electric, the first electric controller (having the electromagnetic core 103 of magnetic attraction) drives the first transmission device (outer surface is bonded with the driver blade 106 of friction plate 106a) to make the power of the second transmission device (transmission cylinder 107) and drive plate 102 be separated (it is upper that driver blade 106 is pull-in on the end face outside, circumferential position place of drive plate 102, do not engage with transmission cylinder 107); When the first electric controller (coil 104) power-off, the first electric controller (not having the electromagnetic core 103 of magnetic attraction) drives the first transmission device (outer surface is bonded with the driver blade 106 of friction plate 106a) to make the second transmission device (transmission cylinder 107) engage (driver blade 106 being hinged on drive plate 102 compresses transmission cylinder 107 by friction plate 106a under centrifugal action) with the power of drive plate 102.

As shown in Figure 2, the specific works process of a kind of electromagnetic gear of the present invention in single speed electromagnetic fan clutch is as follows:

After engine start, driven by engine main shaft 101 rotates, and main shaft 101 is with nutating disk 102 rotation at full speed by woodruff key 119.

When engine water temperature not yet reaches 82 ℃ of first setting values of temperature detect switch (TDS) 125, temperature detect switch (TDS) 125 is controlled and is made the circuit of coil 104 in on-state, the radially adhesive magnetic field that now electromagnetic core 103 produces is firmly pull-in on the driver blade 106 that is connected with friction plate 106a on drive plate 102, friction plate 106a and transmission cylinder 107 do not come in contact, and fan fixed disk 109 and coupled transmission cylinder 107 pass through clutch shaft bearing 108 free rotaries.

When water temperature is elevated to 82 ℃ of first setting values of temperature detect switch (TDS) 125, temperature detect switch (TDS) 125 is controlled the circuit that disconnects coil 104, three driver blades 106 compress transmission cylinder 107 by friction plate 106a under the effect of centrifugal force, make transmission cylinder 107 and drive plate 102 reach synchronized rotation, transmission cylinder 107 drives the fan rotation in fan fixed disk 109, reaches the effect of powerful cooling; If automobile in the process of moving power supply system catastrophic failure causes coil 104 power-off, electromagnetic core 103 do not there is magnetic can three driver blades 106 of adhesive, three driver blades 106 compress transmission cylinder 107 by friction plate 106a under centrifugal action makes transmission cylinder 107 and drive plate 102 reach synchronized rotation, to reach same powerful cooling-down effect.

The manufacture method of the present invention to above-mentioned electromagnetic gear (being applied in single speed electromagnetic fan clutch), comprises the following steps: (a) cast drive plate 102 and carry out machining, the circumferential position outside of drive plate 102 has three groups of projections 117, (b) casting the first transmission device, i.e. three arc driver blades 106, and carry out machining, (c) casting the second transmission device, i.e. transmission cylinder 107, and carry out machining, (d) cast the electromagnetic core 103 in the first electric controller and carry out machining, coil 104 is loaded in the coil embedding groove 103a on electromagnetic core 103 with flat winding, (e) drive plate 102 is arranged on transmission shaft 101 by woodruff key 119, three driver blades 106 are hinged on by bearing pin 124 in the complementary protuberance 117 of drive plate 102, electromagnetic core 103 is arranged on transmission shaft 101 by the second bearing 105 and is positioned at the inner chamber of drive plate 102 circumferential position place end faces, by passive fan fixed disk 109(device) by clutch shaft bearing 108, be arranged on transmission shaft 101, by three groups of fixed plates 120, utilize bolt to be arranged in fan fixed disk 109 transmission cylinder 107, transmission cylinder 107 has the opposing end surface with drive plate 102 end face outsides, circumferential position place after installing, gapped between the opposing end surface of driver blade 106 and transmission cylinder 107, after installation, make:

When coil 104 when electric, electromagnetic core 103 is pull-in on driver blade 106 outside the circumferential position of drive plate 102 on end face, and transmission cylinder 107 and drive plate 102 are separated;

When coil 104 power-off, electromagnetic core 103 not adhesive driver blades 106, driver blade 106 compresses transmission cylinder 107 under the effect of centrifugal force, transmission cylinder 107 is engaged with the power of drive plate 102 by driver blade 106, thereby make drive plate 102 drive fan fixed disk 109 to rotate by driver blade 106, transmission cylinder 107.

The controlling method of one of the present invention to above-mentioned electromagnetic gear (being applied in single speed electromagnetic fan clutch), step comprises:

When engine water temperature is during lower than 82 ℃ of the first setting values, temperature transducer 125 is controlled the circuit of closing coil 104, coil 104 electric, electromagnetic core 103 has magnetic;

When engine water temperature reaches 82 ℃ of the first setting values or continues to raise, temperature transducer 125 is controlled the circuit that disconnects coil 104, coil 104 power-off, and electromagnetic core 103 does not have magnetic.

Embodiment two

As shown in figure 11, under the constant prerequisite of other structures in the embodiment one shown in Fig. 2-10, two fast electromagnetic fan clutch in the present embodiment and embodiment one difference structure are: also comprise magnet fixed disc 210, magnet fixed disc 210 is positioned at fan fixed disk 209 inner chambers, and be arranged on transmission shaft 201 by drive sleeve 233, on magnet fixed disc 210, be inlaid with some the first soft irons 215 with the opposing end surface position of fan fixed disk 209, on the first soft iron 215, magnetic absorption has permanent magnet 214, in fan fixed disk 209, be inlaid with the second soft iron 216 with the corresponding position of permanent magnet 214.

As shown in figure 11, the specific works process of a kind of electromagnetic gear of the present invention in two fast electromagnetic fan clutch is as follows:

After engine start, driven by engine main shaft 201 rotates, and main shaft 201 is with nutating disk 202 rotation at full speed by woodruff key 219, and main shaft 201 drives magnet fixed disc 210 rotation at full speed by drive sleeve 233 simultaneously.

When engine water temperature not yet reaches 82 ℃ of first setting values of temperature detect switch (TDS) 225, temperature detect switch (TDS) 225 is controlled and is made the circuit of coil 204 in on-state, electromagnetic core 203 produce adhesive magnetic field radially the firm adhesive of three driver blades 206 that is connected with friction plate 206a to drive plate 202, friction plate 206a and transmission cylinder 207 do not come in contact, thereby can not drive fan fixed disk 209 to rotate; Meanwhile, relative rotation in the magnetic field that the second soft iron 216 forms with the first soft iron 215 at permanent magnet 214, the second soft iron 216 cutting magnetic lines produce foucault current, foucault current produces new magnetic field, under the effect of magnetic force, realize magnet fixed disc 210 and drive fan fixed disk 209 differential transfers, that is: fan fixed disk 209 flexibly connects middling speed rotation with magnet fixed disc 210, plays the effect of preliminary radiating and cooling, makes motor car engine keep suitable operating temperature.

When engine water temperature is elevated to 82 ℃ of first setting values of temperature detect switch (TDS) 225, temperature detect switch (TDS) 225 is controlled the circuit that disconnects coil 204, three driver blades 206 compress transmission cylinder 207 by three friction plate 206a under the effect of centrifugal force, make transmission cylinder 207 and drive plate 202 reach synchronized rotation, transmission cylinder 207 drives the fan rotation in fan fixed disk 209, reaches the effect of powerful cooling; If automobile in the process of moving power supply system catastrophic failure causes coil 204 power-off, due to coil 204 power-off electric magnetic cores 203 do not have magnetic can adhesive driver blade 206, three driver blades 206 compress transmission cylinder 207 by three friction plate 206a under the effect of centrifugal force, make transmission cylinder 207 and drive plate 202 reach synchronized rotation, transmission cylinder 207 drives the fan rotation in fan fixed disk 209, to reach same powerful cooling-down effect.

Identical with the corresponding construction in embodiment one, 224 in accompanying drawing 11 is bearing pin, and 205 is the second bearing, and 208 is clutch shaft bearing, and 220 is the fixed plate on transmission cylinder 201, and 222 is the magnet isolation tank of offering on drive plate 202 opposing end surfaces.

The position of permanent magnet 214, the first soft iron 215 and the second soft iron 216 in magnet fixed disc 210 and fan fixed disk 209 is not limited to above-mentioned situation, as long as can reach by magnetic effect makes magnet fixed disc 210 drive fan fixed disk 209 transfers, such as the first soft iron 215 and permanent magnet 214 being located in fan fixed disk 209, the second soft iron 216 is located on magnet fixed disc 210.

The manufacture method of the present invention to above-mentioned electromagnetic gear (being applied in two fast electromagnetic fan clutch), basic identical with the manufacture method in embodiment one, difference is: casting magnet fixed disc 210 also carries out machining, at the passive device of provided with fan fixed tray 209() before, first magnet fixed disc 210 is fixedly mounted on transmission shaft 201 by drive sleeve 233, be positioned at fan fixed disk 209 inner chambers, the end face that is inlaid with the first soft iron 215 and permanent magnet 214 on magnet fixed disc 210 is corresponding with the end face that is inlaid with the second soft iron 216 in fan fixed disk 209.

The controlling method of one of the present invention to above-mentioned electromagnetic gear (being applied in two fast electromagnetic fan clutch) is identical with the controlling method in embodiment one.

Embodiment three

As shown in figure 12, under the constant prerequisite of other structures in the embodiment two shown in Figure 11, three-speed electromagnetic fan clutch in the present embodiment and embodiment's one difference structure is: magnet fixed disc 310 replaces the drive sleeve 233 in embodiment two by the 3rd bearing 311() be arranged on drive plate 302, in offering on electromagnetic core 303, exterior loop embedding groove 303a, 303b(as shown in figure 15), exterior loop 304a(the first electric controller, effect is equal to the coil 204 in embodiment two) be located in exterior loop embedding groove 303a, the magnetic conduction opening direction of exterior loop embedding groove 303a points to the circumferential position of drive plate 302, interior loop 304b(the second electric controller) be located in interior loop embedding groove 303b, the magnetic conduction opening direction of interior loop embedding groove 303b points to magnet fixed disc 310 vertically, on magnet fixed disc 310, by 312 support and connection of submissile reed, there is little adhesive dish 313 with the corresponding position of interior loop 304b, little adhesive dish 313 near drive plate 302 and with the corresponding end face of drive plate 302 between gapped.When interior loop 304b(the second electric controller) when electric, electromagnetic core 303 produces axial magnetic suction, electromagnetic core 303 by drive plate 302 by little adhesive dish 313 adhesives to drive plate 302, magnet fixed disc 310 is engaged with drive plate 302, and the power of drive plate 302 is directly passed to magnet fixed disc 310.

As shown in figure 14, the side opening of drive plate 302 is provided with 6 groups of interior magnet isolation tanks 323, on the circumferential position place end face of drive plate 302, offer 6 groups of outer magnet isolation tanks 322, as shown in figure 13, the outer surface of driver blade 306 is provided with the repressed friction plate 306a being bonded on driver blade 306 of one deck, friction plate 306a has larger friction factor and can drive transmission cylinder 307 to rotate, on transmission cylinder 307, do Wear-resistant Treatment with the apparent surface of friction plate 306a, so that the transmission better effects if between friction plate 306a and transmission cylinder 307, when exterior loop 304a power-off, driver blade 306 can compress transmission cylinder 307 by friction plate 306a under the effect of centrifugal force, and drive fan fixed disk 309 to rotate at full speed by transmission cylinder 307, to reach to the motor effect of cooling at full speed.

As shown in Figure 16, Figure 17, the circumferential position outside of drive plate 302 is provided with three projections 317, is evenly distributed on the circumferential position of drive plate 302, and three driver blades 306 are hinged in three projections 317 by pin 324.

As shown in figure 12, the specific works process of a kind of electromagnetic gear of the present invention in three-speed electromagnetic fan clutch is as follows:

After engine start, driven by engine main shaft 301 rotates, and main shaft 301 is with nutating disk 302 rotation at full speed by woodruff key 319.

When engine water temperature not yet reaches 82 ℃ of first setting values of temperature detect switch (TDS) 325, temperature detect switch (TDS) 325 is controlled the circuit of the circle 304a that gives connection to external call, electromagnetic core 303 produce adhesive magnetic field radially the firm adhesive of three driver blades 306 that is connected with friction plate 306a to drive plate 302, three friction plate 306a and transmission cylinder 307 do not come in contact, fan fixed disk 309 is by clutch shaft bearing 308 free rotaries, interior loop 304b keeps off-position, the little adhesive dish 313 of drive plate 302 not adhesive, drive plate 302 keeps the phase-separated state with magnet fixed disc 310, magnet fixed disc 310 is by the 3rd bearing 311 free rotaries.

When engine water temperature is elevated to 82 ℃ of first setting values of temperature detect switch (TDS) 325, temperature detect switch (TDS) 325 is controlled the circuit of connecting interior loop 304b, electromagnetic core 303 produces axial the suction-combining force, by little suction close dish 313 adhesives on drive plate 302 with drive plate 302 synchronous rotaries, little adhesive dish 313 drives magnet fixed disc 310 to rotate by submissile reed 312, be embedded in relative rotation in the magnetic field that the second soft iron 316 in fan fixed disk 307 forms with the first soft iron 315 at permanent magnet 314, the second soft iron 316 cutting magnetic lines produce foucault current, foucault current produces new magnetic field, under the effect of magnetic force, realize magnet fixed disc 310 and drive fan fixed disk 309 differential transfers, that is: fan fixed disk 309 flexibly connects middling speed rotation with magnet fixed disc 310, play the effect of preliminary radiating and cooling, make motor car engine keep suitable operating temperature.

If engine water temperature continues to be elevated to 88 ℃ of second setting values of temperature detect switch (TDS) 325, temperature detect switch (TDS) 325 is controlled the power supply that disconnects exterior loop 304a, three driver blades 306 compress transmission cylinder 307 by three friction plate 306a under the effect of centrifugal force makes transmission cylinder 307 and drive plate 302 reach synchronized rotation, transmission cylinder 307 drives the fan rotation in fan fixed disk 309, reaches the effect of powerful cooling.

If automobile in the process of moving power supply system catastrophic failure causes exterior loop 304a power-off, due to exterior loop 304a power-off electric magnetic core 303 does not have magnetic can adhesive driver blade 306, three driver blades 306 compress transmission cylinder 307 by friction plate 306a under the effect of centrifugal force, make transmission cylinder 307 and drive plate 302 reach synchronized rotation, to reach same powerful cooling-down effect.

Identical with the corresponding construction in embodiment two, 305 in accompanying drawing 12 is the second bearing, and 320 is the fixed plate on transmission cylinder 301.

Adopt said structure, not only can realize three speed coolings, also guaranteed that fan fixed disk can be rotated cooling under burst powering-off state, prevent indicating oven temp. of engine, this device can prevent in prior art because of the magnetic clutch fan stall causing of losing efficacy, thereby more secure and reliable to use.

The manufacture method of the present invention to above-mentioned electromagnetic gear (being applied in three-speed electromagnetic fan clutch), basic identical with the manufacture method in embodiment two (wherein coil 204 roles in exterior loop 304a and embodiment two are identical), difference is: magnet fixed disc 310 is arranged on transmission shaft 301 by the 3rd bearing 311, increased by the second electric controller (interior loop 304b, be located on electromagnetic core 303), on magnet fixed disc 310, by 312 support and connection of submissile reed, there is little adhesive dish 313 with the corresponding position of interior loop 304b.

The controlling method of one of the present invention to above-mentioned electromagnetic gear (being applied in three-speed electromagnetic fan clutch), step comprises:

When engine water temperature is during lower than 82 ℃ of the first setting values, temperature transducer 325 is controlled the circuit of the circle 304a that gives connection to external call, control interior loop 304b simultaneously and keep off-position, the end face that points to drive plate 302 circumferential positions on electromagnetic core 303 has magnetic, and the end face that points to little adhesive dish 313 does not have magnetic;

When engine water temperature is equal to or higher than 82 ℃ of the first setting values and during lower than 88 ℃ of the second setting values, temperature transducer 325 is controlled exterior loop 304a and is kept obtaining electricity condition, control interior loop 304b obtains electric simultaneously, the end face that points to drive plate 302 circumferential positions on electromagnetic core 303 has magnetic, and the end face that points to little adhesive dish 313 also has magnetic;

When engine water temperature is equal to or higher than 88 ℃ of the second setting values, temperature transducer 325 is controlled exterior loop 304a power-off, control interior loop 304b obtains electric simultaneously, the end face that points to drive plate 302 circumferential positions on electromagnetic core 303 does not have magnetic, driver blade 306 compresses transmission cylinder 307 under centrifugal action, drive fan fixed disk 309 rotation at full speed, now no matter whether magnet fixed disc 310 rotates, fan fixed disk 309 all can be rotated at full speed, thereby now control interior loop 304b and obtain electric or while meeting accident power-off situation, this transmission device all can make fan fixed disk 309 rotation at full speed.

Embodiment four

As shown in figure 18, under the constant prerequisite of other structures in the embodiment one shown in Fig. 2-10, single speed electromagnetic fan clutch in the present embodiment and embodiment one difference structure are: the electromagnet assembly that the first electric controller comprises permanent magnet 403c and is comprised of electromagnetic core 403 and coil 404, permanent magnet 403c is positioned at the inner side of transmission cylinder 407, the particular location of permanent magnet 403c is arranged on transmission shaft 401 by the second bearing 405 as shown in figure 18, and be positioned at the inner chamber of drive plate 402, the upper end face that points to drive plate 402 circumferential positions of permanent magnet 403c is magnetic pole, electromagnet assembly 403, 404 are positioned at the outside of transmission cylinder 407, electromagnetic core 403 is flexible coupling by fixing sebific duct and engine body, the first transmission device comprises three driver blades 406, driver blade 406 is rotatably connected on transmission cylinder 407 on the opposing end surface with drive plate 402, driver blade 406 be shaped as arc, the internal surface of driver blade 406 is provided with the repressed arc friction plate 406a being bonded on driver blade 406 of one deck, driver blade 406, transmission cylinder 407, drive plate 402 all can magnetic conductions, when coil 404 when electric electromagnetic core 403 magnetic attraction of driver blade 406 is greater than to the magnetic attraction of permanent magnet 403c to driver blade 406.

As shown in figure 18, on the circumferential position place end face of drive plate 402, offer some groups of magnet isolation tanks 422, on the opposing end surface of transmission cylinder 407, also offer some groups of

magnet isolation tank

407a, 420 is the fixed plate on transmission cylinder 407,417 is the projection on inner side end on transmission cylinder 407, for driver blade 406 being installed by bearing pin 424.

As shown in figure 18, the specific works process of electromagnetic gear of the present invention in single speed electromagnetic fan clutch is as follows:

After engine start, driven by engine main shaft 401 rotates, and main shaft 401 is with nutating disk 402 rotation at full speed by woodruff key 419.

When engine water temperature not yet reaches 82 ℃ of first setting values of temperature detect switch (TDS) 425, temperature detect switch (TDS) 425 is controlled and is made the circuit of coil 404 in on-state, now the coil 404 in electromagnetic core 403 switches on power, electromagnetic core 403 is greater than the magnetic attraction of permanent magnet 403c to corresponding driver blade 406 to the magnetic attraction of the driver blade 406 that is connected with friction plate 406a, thereby the driver blade 406 that is connected with friction plate 406a can firmly be pull-in on the inwall of transmission cylinder 407 under the force action of deflection electromagnetic core 403 sides, friction plate 406a and the drive plate 402 of driver blade 406 inner sides do not come in contact, fan fixed disk 409 and coupled transmission cylinder 407 pass through clutch shaft bearing 408 free rotaries.

When water temperature is elevated to 82 ℃ of first setting values of temperature detect switch (TDS) 425, temperature detect switch (TDS) 425 is controlled the circuit that disconnects coil 404, now electromagnetic core 403 does not have magnetic attraction to driver blade 406, three driver blades 406 are firmly pull-in on outside the circumferential position of drive plate 402 on end face under the magnetic fields of permanent magnet 403c, thereby make drive plate 402 drive transmission cylinder 407 to rotate by three driver blades 406, transmission cylinder 407 drives the fan rotation in fan fixed disk 409, reaches the effect of powerful cooling.

If automobile is the power-off of power supply system catastrophic failure in the process of moving, because coil 404 power-off electric magnetic cores 403 can three driver blades 406 of adhesive, three driver blades 406 are firmly pull-in on outside the circumferential position of drive plate 402 on end face under the magnetic fields of permanent magnet 403c, make drive plate 402 by three driver blades 406, drive transmission cylinder 407 and then drive the fan rotation in fan fixed disk 409, to reach same powerful cooling-down effect.

Certainly, the particular location of permanent magnet 403c is not limited to second bearing 405 that passes through shown in Figure 18 and is arranged on transmission shaft 401, the end face outside, circumferential position place that also permanent magnet 403c can be embedded in to drive plate 402 is upper, or directly adopts permanent magnet material to make drive plate 402.

In the present embodiment, the first electric controller in single speed electromagnetic fan clutch comprises permanent magnet and the mode of execution of the electromagnet assembly that is comprised of electromagnetic core and coil, be equally applicable to the three-speed electromagnetic fan clutch in two fast electromagnetic fan clutch and the embodiment three in embodiment two, while adopting this mode of execution in two speed and three-speed electromagnetic fan clutch, the remaining part being connected with the first electric controller is structurally made adaptations.

The manufacture method of the present invention to above-mentioned electromagnetic gear (being applied in single speed electromagnetic fan clutch), basic identical with the manufacture method in embodiment one, difference is: the opposing end surface inner side of transmission cylinder 407 has three groups of projections 417, three driver blades 406 are hinged on by bearing pin 424 in the complementary protuberance 417 of transmission cylinder 407, gapped between end face outside the circumferential position of driver blade 406 and drive plate 402; The first electric controller in step (d) is permanent magnet 403c and the electromagnet assembly that is comprised of electromagnetic core 403 and coil 404, permanent magnet 403c is arranged on transmission shaft 401 by bearing 405 and is positioned at the inner chamber of drive plate 402, the opposing end surface outside that electromagnet assembly is located to transmission cylinder 407, is fixed on electromagnetic core 403 on motor body; When coil 404 when electric electromagnetic core 403 magnetic attraction of driver blade 406 is greater than to the magnetic attraction of permanent magnet 403c to driver blade 406.

The controlling method of one of the present invention to above-mentioned electromagnetic gear (being applied in single speed electromagnetic fan clutch) is identical with the controlling method in embodiment one.

Embodiment five

As shown in figure 19, a kind of electromagnetic gear, comprise that drive plate 502(drive plate 502 is for belt pulley, by driven by engine, it rotates), also comprise the first transmission device, the second transmission device and the first electric controller, wherein the first transmission device comprises three driver blades 506, as shown in Figure 20-22, three driver blades 506 are hinged on the circumferential position of drive plate 502 by bearing pin 524, driver blade 506 be shaped as arc, the outer surface of driver blade 506 is provided with the repressed arc friction plate 506a being bonded on driver blade 506 of one deck; The second transmission device is that transmission cylinder 507(is as shown in Figure 23,24), transmission cylinder 507 has the opposing end surface with drive plate 502 in the circumferential position outside of drive plate 502, gapped between the opposing end surface of transmission cylinder 507 and friction plate 506a; The first electric controller comprises the electromagnet assembly being comprised of electromagnetic core 503 and coil 504, and electromagnet assembly is positioned at drive plate 502 inner chambers, and drive plate 502, driver blade 506 and transmission cylinder 507 are made by permeability magnetic material.

As shown in figure 19, also comprise passive device, passive device is air pump rotating shaft 509, drive plate 502 is arranged in air pump rotating shaft 509 by bearing 502a, transmission cylinder 507 is fixedly mounted in air pump rotating shaft 509 by woodruff key 519, electromagnetic core 503 is fixed on air pump shell 509a by clamping bolt, on electromagnetic core 503, offer coil embedding groove, coil 504 is located in coil embedding groove, the magnetic conduction opening direction of coil embedding groove and air pump rotating shaft 509 radially to disperse direction identical, point to the end face inner side, circumferential position place of drive plate 502, on the circumferential position place end face of drive plate 502, facing to magnetic conduction opening direction place, offer 6 groups of magnet isolation tanks 522, in conjunction with Figure 20, Figure 23, shown in 24, on transmission cylinder 507 with drive plate 502 on the corresponding position of magnet isolation tank 522 be provided with 6 groups of magnet isolation tank 507a.

As shown in Figure 21,22, the circumferential position outside of drive plate 502 is hinged in corresponding projection 517 by pin respectively to the one end that is evenly provided with 517, three driver blades 506 of three projections along excircle; On transmission cylinder 507, do Wear-resistant Treatment with the apparent surface of driver blade 506.

As shown in figure 19, when the first electric controller (coil 504) when electric, the first electric controller (having the electromagnetic core 503 of magnetic attraction) drives the first transmission device (being the driver blade 506 that outer surface is bonded with friction plate 506a) to make the power of the second transmission device (being transmission cylinder 507) and drive plate 502 be separated (it is upper that driver blade 506 is pull-in on the circumferential position outside of drive plate 502, do not engage with transmission cylinder 507); When the first electric controller (coil 504) power-off, the first electric controller (not having the electromagnetic core 503 of magnetic attraction) drives the first transmission device (being the driver blade 506 that outer surface is bonded with friction plate 506a) to make the second transmission device (being transmission cylinder 507) engage (driver blade 506 compresses transmission cylinder 507 by friction plate 506a under centrifugal action) with the power of drive plate 502.

As shown in figure 19, the specific works process of a kind of electromagnetic gear of the present invention in air pump is as follows:

After engine start, band nutating disk 502(belt pulley) rotation, when air pump internal pressure is equal to or higher than the 4th setting value 6-8 kilogram (when brake system can normally be worked), air pump is without work, now pressure switch 525 control coils 504 electric, by driver blade 506 adhesives, to end face outside drive plate 502 circumferential positions, friction material 506a does not contact with transmission cylinder 507, drive plate 502 can not be passed to air pump rotating shaft 509 by transmission cylinder 507 by power, gas air pump inoperative.

When air pump internal pressure is during lower than the 4th setting value 6-8 kilogram (during brake system cisco unity malfunction), now pressure switch 525 control coil 504 power-off, driver blade 506 compresses transmission cylinder 507 under centrifugal action, make transmission cylinder 507 and the synchronized rotation of drive plate 502, transmission cylinder 507 drives air pump rotating shaft 509 to rotate, and makes air pump enter working state.

When magnetic clutch breaks down while causing coil 504 unexpected power-off when driving, driver blade 506 is not attracted by electromagnetic core 503, driver blade 506 compresses transmission cylinder 507 under centrifugal action, make transmission cylinder 507 and drive plate 502 synchronous rotaries, transmission cylinder 507 drives air pump rotating shaft 509 to rotate, and air pump still can normally be worked under burst powering-off state.

The manufacture method of the present invention to above-mentioned electromagnetic gear (being applied in air pump), basic identical with the manufacture method in embodiment one, difference is: drive plate 502 is the belt pulley by driven by engine, passive device is air pump rotating shaft 509, drive plate 502 is arranged in air pump rotating shaft 509 by bearing 502a, transmission cylinder 507 is fixedly mounted in air pump rotating shaft 509 by woodruff key 519, and electromagnetic core 503 is bolted on air pump shell 509a.

The controlling method of one of the present invention to above-mentioned electromagnetic gear (being applied in air pump), step comprises:

When air pump pressure is during lower than the 4th setting value 6-8 kilogram, pressure switch 525 control coil 504 power-off, drive plate 502 by driver blade 506 and transmission cylinder 507 by transmission of power to air pump rotating shaft 509, air pump work;

When air pump pressure is equal to or higher than the 4th setting value 6-8 kilogram, pressure switch 525 control coils 504 electric, driver blade 506 is pull-in on outside drive plate 502 circumferential positions on end face, not with transmission cylinder 507 combinations, can not be by transmission of power to air pump rotating shaft 509, gas air pump inoperative.

Embodiment six

As shown in figure 25, under the constant prerequisite of other structures in the embodiment five shown in Figure 19-24, air pump in the present embodiment and embodiment's five difference structure is: the electromagnet assembly that the first electric controller comprises permanent magnet 603c and is comprised of electromagnetic core 603 and coil 604, permanent magnet 603c is positioned at the inner chamber of transmission cylinder 607, and it is upper to be fixed on air pump shell 609a by clamping bolt, electromagnet assembly is positioned at drive plate 602 circumferential position outsides and is bolted on air pump shell 609a.

As shown in figure 25, the first transmission device comprises three driver blades 606, driver blade 606 is hinged on by bearing pin 624 in the projection 617 of drive plate 602 circumferential position inner sides, driver blade 606 is positioned on the opposing end surface of drive plate 602 and transmission cylinder 607, driver blade 606 be shaped as arc, the internal surface of driver blade 606 is provided with the repressed arc friction plate 606a being bonded on driver blade 606 of one deck, gapped between the opposing end surface of friction plate 606a and transmission cylinder 607, on the drive plate 602 between permanent magnet 603c and the opposing end surface of electromagnetic core 603 and transmission cylinder 607, all offer some groups of

magnet isolation tanks

622 and 607a, when coil 604 when electric electromagnetic core 603 magnetic attraction of driver blade 606 is greater than to the magnetic attraction of permanent magnet 603c to driver blade 606.

As shown in figure 25, the specific works process of electromagnetic gear of the present invention in air pump is as follows:

After engine start, band nutating disk 602(belt pulley) rotation, when air pump internal pressure is equal to or higher than the 4th setting value 6-8 kilogram (when brake system can normally be worked), air pump is without work, pressure switch 625 control coils 604 obtain electric, electromagnetic core 603 by driver blade 606 adhesives to the interior edge face of drive plate 602, the friction material 606a being now positioned on driver blade 606 internal surfaces does not contact with transmission cylinder 607, transmission cylinder 607 can not be by the transmission of power of drive plate 602 to air pump rotating shaft 609, gas air pump inoperative.

When air pump internal pressure is during lower than the 4th setting value 6-8 kilogram (during brake system cisco unity malfunction), now pressure switch 525 is controlled the circuit that disconnects coil 604, electromagnetic core 603 does not have magnetic attraction to driver blade 606, three driver blades 606 are firmly pull-in on the opposing end surface outside of transmission cylinder 607 under the magnetic fields of permanent magnet 603c, thereby make drive plate 602 drive transmission cylinder 607 to rotate by three driver blades 606, transmission cylinder 607 drives air pump rotating shaft 609 to rotate, and makes air pump enter working state.

When power supply system when driving breaks down while causing coil 604 unexpected power-off, driver blade 606 is not attracted by electromagnetic core 603, driver blade 606 is firmly pull-in on the outer wall of transmission cylinder 607 under the magnetic fields of permanent magnet 603c, the friction plate 606a of driver blade 606 internal surfaces firmly compresses transmission cylinder 607, drive plate 602 is rotated transmission of power to transmission cylinder 607 and then drive air pump rotating shaft 609 by driver blade 606, thereby make air pump enter working state under burst powering-off state, guarantee that vehicle can normal brake application under burst powering-off state.

Certainly, the particular location of permanent magnet 603c is not limited to the bearing 602a that passes through shown in Figure 25 and is arranged in air pump rotating shaft 609, the opposing end surface outside that also permanent magnet 603c can be embedded in to transmission cylinder 607 is upper, or directly will on transmission cylinder 607, adopt permanent magnet material to make with the opposing end surface of driver blade 606.

The manufacture method of the present invention to above-mentioned electromagnetic gear (being applied in air pump), basic identical with the manufacture method in embodiment five, difference is: driver blade 606 is hinged on the inner side end of drive plate 602 circumferential positions (in embodiment five outside side end face on), the first electric controller in step (d) is permanent magnet 603c and the electromagnet assembly that is comprised of electromagnetic core 603 and coil 604, permanent magnet 603c is sheathed on to air pump rotating shaft 609 outer shrouds and is bolted on air pump shell 609a, permanent magnet 603c is located at transmission cylinder 607 inner chambers, electromagnet assembly is located to the opposing end surface outside of drive plate 602, electromagnetic core 603 is bolted on air pump shell 509a, when coil 604 when electric electromagnetic core 603 magnetic attraction of driver blade 606 is greater than to the magnetic attraction of permanent magnet 603c to driver blade 606.

The controlling method of one of the present invention to above-mentioned electromagnetic gear (being applied in air pump) is identical with the controlling method in embodiment five.

In embodiment one to six, driver blade is not limited to three, one above all can, the driver blade of varying number can be set according to the model of transmission device etc., to guarantee transmission best results; On driver blade, can connect friction plate to increase friction, better transmission, also can omit friction plate and driver blade and transmission cylinder are carried out to Wear-resistant Treatment; Driver blade is steel, iron or other conductive magneto-conductive materials; Friction plate is full-metallic, asbestos or other high-abrasive materials.

The Placement of friction plate and driver blade can be that the compacting in above-described embodiment one to six is bonding, can be also that bolt connects, rivets or other Placements.

Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skills make technological scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.

Claims

1. an electromagnetic fan clutch, comprise transmission shaft (301), drive plate (302), fan fixed disk (309), magnet fixed disc (310) and the second electric controller (303, 304b), described drive plate (302) is fixedly mounted on described transmission shaft (301), described fan fixed disk (309) is arranged on described transmission shaft (301) by clutch shaft bearing (308), described magnet fixed disc (310) is arranged on described transmission shaft (301) by the 3rd bearing (311), described magnet fixed disc (310) is for driving described fan fixed disk (309) differential transfer by magnetic effect, when described the second electric controller (304b) when electric, described drive plate (302) engages with described magnet fixed disc (310), when described the second electric controller (304b) power-off, described drive plate (302) is separated with described magnet fixed disc (310), it is characterized in that: also comprise the first transmission device (306), the second transmission device (307) and the first electric controller (303, 304a), described the second transmission device (307) is fixedly connected with described fan fixed disk (309),

When described the first electric controller (304a) when electric, described the first electric controller (303) drives described the first transmission device (306) that described the second transmission device (307) and described drive plate (302) are separated;

When the first electric controller (304a) power-off, described the first electric controller (303) drives described the first transmission device (306) that described the second transmission device (307) is engaged with described drive plate (302),

Described the second transmission device comprises transmission cylinder (307),

Described the first transmission device comprises at least one driver blade (306).

2. electromagnetic fan clutch according to claim 1, it is characterized in that: described driver blade (306) is three arc-like sheets, the circumferential position outside of described drive plate (302) is provided with three groups of projections (317), and described three driver blades (306) are hinged on by bearing pin (324) in the complementary protuberance (317) of described drive plate (302);

Described transmission cylinder (307) has the opposing end surface with described drive plate (302) in the circumferential position outside of described drive plate (302), gapped between the opposing end surface of described driver blade (306) and described transmission cylinder (307);

Described the first electric controller comprises the electromagnet assembly being comprised of electromagnetic core (303) and coil (304a), and described electromagnet assembly is positioned at the inner chamber of the circumferential position place end face of described drive plate (302).

3. electromagnetic fan clutch according to claim 1, it is characterized in that: described transmission cylinder (407) has the opposing end surface with described drive plate (402) in the circumferential position outside of described drive plate (402), the described opposing end surface of described transmission cylinder (407) is provided with three groups of projections (417), described driver blade (406) is three arc-like sheets, and described three driver blades (406) are hinged on by bearing pin (424) in the complementary protuberance (417) of described transmission cylinder (407); Gapped between the opposing end surface of described driver blade (406) and described drive plate (402);

The electromagnet assembly that described the first electric controller comprises permanent magnet (403c) and is comprised of electromagnetic core (403) and coil, described permanent magnet (403c) is positioned at the inner chamber of described drive plate (402), and described electromagnet assembly is positioned at the described opposing end surface outside of described transmission cylinder (407);

When electromagnetic core (403) described in described coil obtains when electric is greater than the magnetic attraction of described permanent magnet (403c) to described driver blade (406) to the magnetic attraction of described driver blade (406).

4. according to the electromagnetic fan clutch described in claim 2 or 3, it is characterized in that: described driver blade (306) is upper is fixedly connected with arc friction plate (306a) with the opposing end surface place of described transmission cylinder (307).

5. a manufacture method for electromagnetic fan clutch, is characterized in that comprising the following steps:

(a) form transmission shaft (301), fan fixed disk (309), magnet fixed disc (310), the first electric controller (303,304a) and the second electric controller (303,304b);

(b) form drive plate (302);

(c) form the first transmission device (306);

(d) form the second transmission device (307);

(e) described the first transmission device (306) is installed, the first electric controller (303, 304a) He the second electric controller (303, 304b), described drive plate (302) is fixedly mounted on described transmission shaft (301), described magnet fixed disc (310) is arranged on described transmission shaft (301) by the 3rd bearing (311), described the second transmission device (307) is fixed in described fan fixed disk (309), described fan fixed disk (309) is arranged on described transmission shaft (301) by clutch shaft bearing (308), described magnet fixed disc (310) can drive described fan fixed disk (309) differential transfer, make:

When described the first electric controller (304a) power-off, described the first electric controller (303) drives described the first transmission device (306) that described the second transmission device (307) is engaged with described drive plate (302);

When described the second electric controller (304b) when electric, described drive plate (302) engages with described magnet fixed disc (310);

When described the second electric controller (304b) power-off, described drive plate (302) is separated with described magnet fixed disc (310),

The first electric controller in described step (a) is the electromagnet assembly being comprised of electromagnetic core (303) and coil (304a), described electromagnet assembly is arranged on to the inner chamber of the circumferential position place end face of described drive plate (302);

The circumferential position outside of the described drive plate (302) in described step (b) has three groups of projections (317);

The first transmission device in described step (c) is three arc driver blades (306), and described three driver blades (306) are hinged on by bearing pin (324) in the complementary protuberance (317) of described drive plate (302);

The second transmission device in described step (d) is transmission cylinder (307), described transmission cylinder (307) has the opposing end surface with described drive plate (302) circumferential position outside after installing, gapped between the opposing end surface of described driver blade (306) and described transmission cylinder (307).

6. a manufacture method for electromagnetic fan clutch, is characterized in that comprising the following steps:

(b) form drive plate (302);

(c) form the first transmission device (306);

(d) form the second transmission device (307);

The first transmission device in described step (c) is three arc driver blades (406);

The second transmission device in described step (d) is transmission cylinder (407), described transmission cylinder (407) has the opposing end surface with described drive plate (402) circumferential position outside after installing, the described opposing end surface inner side of described transmission cylinder (407) has three groups of projections (417), the complementary protuberance (417) that described three driver blades (406) are hinged on to described transmission cylinder (407) by bearing pin (424) is upper, gapped between end face outside the circumferential position of described driver blade (406) and described drive plate (402);

The first electric controller in described step (a) is permanent magnet (403c) and the electromagnet assembly that is comprised of electromagnetic core (403) and coil, described permanent magnet (403c) is arranged on to the inner chamber of described drive plate (402), described electromagnet assembly is arranged on to the described opposing end surface outside of described transmission cylinder (407);

7. the controlling method to the electromagnetic fan clutch described in any one in claim 1-4, step comprises: