CN114050683B - Active heat dissipation type motor with built-in brush damping structure - Google Patents
Active heat dissipation type motor with built-in brush damping structure Download PDFInfo
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- CN114050683B CN114050683B CN202111451364.8A CN202111451364A CN114050683B CN 114050683 B CN114050683 B CN 114050683B CN 202111451364 A CN202111451364 A CN 202111451364A CN 114050683 B CN114050683 B CN 114050683B
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 43
- 238000013016 damping Methods 0.000 title claims abstract description 21
- 230000035939 shock Effects 0.000 claims abstract description 18
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 30
- 230000009467 reduction Effects 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
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Abstract
The invention relates to the technical field of motors, in particular to an active heat dissipation type motor with a built-in brush shock absorption structure, which is structurally arranged through a heat dissipation shell component and a shock absorption component, airflow generated by a fan in a fan cavity enters an airflow channel through an airflow hole, the airflow flowing outwards from the inside of the heat dissipation shell component is realized, heat generated in the rotation process of an internal rotor and a stator is quickly taken out, self heat dissipation is realized, and the service life of equipment is prolonged; simultaneously, the cooling shell subassembly structure sets up, can make electromagnetic noise, the frictional noise that the inside operation produced obtain reduction by a wide margin, combines the damping assembly structure setting, and guarantee brush operation work efficiency and performance avoid the noise because of the vibration brings simultaneously, and very big degree improves the noise reduction effect.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an active heat dissipation type motor with a built-in electric brush shock absorption structure.
Background
With the development of economy and technology, the manufacturing industry has been rapidly developed, and in the process of development, the motor has been developed. With the development of the motor use and development technology, the technical defects of the motor are gradually highlighted, for example: the motor is damaged due to the frequent over-high temperature, so that the use cost of the motor is increased; for another example: the fan blades of the heat dissipation fan in the motor are not easy to disassemble, the maintenance is inconvenient, the damping effect is poor, and the motor is easy to damage after long-time use, so that the service life is shortened.
Therefore, in the prior art, studies are made on aspects of heat dissipation, shock absorption, convenience and the like of a motor, for example: the patent application numbers are: 201710430852.8 discloses a novel heat dissipation permanent magnet motor, through structure setting and simplification for the structure of whole motor device is inseparable, has better syllable-dividing function and radiating effect, has realized that it is integrated on the motor casing to dispel the heat with the hydrologic cycle, strengthens the radiating effect. For another example: patent No. 202021019310.5 discloses a garden machine motor, through set up the heat dissipation fan between end cover and rotor, reduces the temperature when the motor moves, has improved motor operational environment, has improved motor work efficiency. However, the motor casing structure in the prior art is unreasonable in arrangement, so that the heat dissipation effect is still unsatisfactory, and meanwhile, when the electric brush frequently slides in contact with the rotor, the electric brush generates vibration due to high-speed rotation of the rotor, so that the electric brush generates deformation and noise, and the operation noise and the service life of the motor are influenced.
In view of the above, the researchers combine the overall consideration of the motor structure, improve the motor casing structure, and adjust the installation position and installation mode of the electric brush, so as to realize the reduction of noise generation from the inside of the motor and the improvement of the channel in the noise diffusion process, and achieve the noise reduction of the motor during operation; meanwhile, the active heat dissipation effect of the motor is improved, the whole shell structure of the motor is improved, and a new motor structure is provided.
Disclosure of Invention
The invention provides an active heat dissipation type motor with a built-in electric brush shock absorption structure, wherein the motor structure is provided with the electric brush shock absorption structure by changing the installation mode of an electric brush, and the electric brush shock absorption structure is used for avoiding noise generated in the vibration process and reducing the noise source of the motor; meanwhile, through the improvement of the structure of the motor shell, the noise transmission path is prolonged, the noise transmission rate is reduced from the noise transmission, the purpose of reducing noise is achieved, the air flow of the fan stroke can flow rapidly in the motor shell, the internal temperature of the motor is reduced, and the effect of rapid heat dissipation is achieved.
The method is realized by the following technical scheme:
the active heat dissipation type motor with the built-in electric brush shock absorption structure comprises a base, a rear cover, a front cover and a heat dissipation shell assembly arranged on the base; the rear cover is arranged at the right end of the radiating shell assembly, and the front cover is arranged at the left end of the radiating shell assembly; the radiating shell assembly comprises a left cylindrical barrel assembly and a right cylindrical barrel assembly, and the left cylindrical barrel assembly and the right cylindrical barrel assembly are mutually inserted to form a multilayer airflow channel; the inner wall of the right end of the left cylindrical barrel assembly is connected with the bottom plate of the right cylindrical barrel assembly through a fixed connecting assembly; a stator is arranged on the inner wall of the left cylindrical barrel assembly, bearings are arranged at the center of the bottom in the left cylindrical barrel assembly and the center of the bottom in the right cylindrical barrel assembly, a rotating shaft penetrates through the bearings, and a rotor is arranged on the rotating shaft; the right end of the rotating shaft penetrates out of the bearing to be connected with the fan, and the left end of the rotating shaft penetrates out of the bearing; a plurality of air flow holes are formed in the bottom of the right cylindrical barrel assembly and positioned on the outer side of the fixed connecting assembly, a fan cavity is formed between the rear cover and the right end of the radiating shell assembly, and the fan cavity is communicated with the air flow channel through the air flow holes; the rear cover is provided with a plurality of air inlets; the bottom of the left cylindrical barrel assembly is provided with an installation position, an electric brush is arranged in the installation position, a damping assembly is arranged on the inner wall of the left cylindrical barrel assembly, and the electric brush is arranged on the damping assembly; an insulating layer is arranged between the electric brush and the damping component; the electric brush is in contact communication with the rotor; the front cover is provided with a wire hole for leading a wire into the front cover and connecting the electric brush; and a through hole for the rotating shaft to penetrate out is formed in the center of the front cover.
Through the structural arrangement of the radiating shell assembly and the damping assembly, airflow generated by a fan in the fan cavity enters the airflow channel through the airflow hole, so that the airflow flowing outwards from the radiating shell assembly is realized, the heat generated in the rotating process of the internal rotor and the stator is quickly taken out, the self-radiating is realized, and the service life of the equipment is prolonged; simultaneously, the cooling shell subassembly structure sets up, can make electromagnetic noise, the frictional noise that the inside operation produced obtain reduction by a wide margin, combines the damping assembly structure setting, and guarantee brush operation work efficiency and performance avoid the noise because of the vibration brings simultaneously, and very big degree improves the noise reduction effect.
The invention has relatively simple structure and more convenient assembly and connection.
In order to simplify the assembly work and improve the assembly efficiency, preferably, the left cylindrical barrel assembly comprises a left shell plate, a first left barrel and a second left barrel, and the first left barrel and the second left barrel are integrally connected to the left shell plate; the inner diameter of the first left cylinder is larger than the outer diameter of the second left cylinder, and the length of the first left cylinder is smaller than that of the second left cylinder; an airflow channel a is formed between the first left barrel and the second left barrel; the right cylindrical barrel assembly comprises a right shell plate, a first right barrel and a second right barrel, and the first right barrel and the second right barrel are integrally connected to the right shell plate; the first right cylinder inner diameter is larger than the second right cylinder outer diameter, and the length of the first right cylinder is equal to that of the second right cylinder and smaller than that of the second left cylinder; an air flow channel b is formed between the first right cylinder and the second right cylinder; the multilayer airflow channel is formed by inserting the second right cylinder into the airflow channel a, inserting the first left cylinder into the airflow channel b, and dividing the airflow channel a and the airflow channel b into a first airflow channel, a second airflow channel and a third airflow channel from inside to outside; the air flow hole communicates the fan cavity with the first air flow channel, and the end part of the second left cylinder is connected with the right shell plate through a fixed connecting assembly.
In order to improve the space of the fan cavity to the maximum extent and ensure that the flowing air flow is formed in the fan cavity, preferably, the right end of the right shell plate is provided with a tail groove, and the rear cover covers the tail groove to form the fan cavity.
In order to achieve the purpose of rapidly introducing heat generated in the working process of the stator and the rotor into the air flow channel and achieving a rapid heat dissipation effect, preferably, the outer wall of the second left cylinder is provided with a plurality of inner cooling fins.
In order to achieve a quick external heat dissipation effect, preferably, the outer wall of the first right cylinder is provided with a plurality of external heat dissipation fins.
In order to improve the convenience when radiator shell subassembly is connected and the equipment, preferably, fixed connection subassembly includes the tip of the second left section of thick bamboo right-hand member is equipped with screw hole a be equipped with screw hole b on the shell plate of the right side, just screw hole a with screw hole b specification and size is unanimous, and the matching is equipped with bolt a.
In order to improve the exhaust effect, it is preferable that an exhaust passage is formed between a left end of the right cylindrical barrel assembly and a right end of the front cover, and the exhaust passage is communicated with the third flow passage.
In order to facilitate connection between a wire and an electric brush and installation of the front cover at the front end of the radiating shell assembly, convenience is improved, preferably, a rotating plate is arranged in the center of the front cover, a sliding assembly is arranged between the rotating plate and the front cover, the sliding assembly comprises a sliding groove formed in the inner wall, connected with the rotating plate, of the front cover and a sliding column formed in the outer wall, connected with the front cover, of the rotating plate, the sliding column can be inserted into the sliding groove, and the sliding column can freely slide in the sliding groove; the rotating plate is provided with the wire guide hole; the center of the rotating plate is provided with a through hole.
In order to simplify the structure of the damping assembly, ensure the damping effect and avoid the interference of electric leakage, preferably, the damping assembly comprises a thread groove formed in the inner wall of the second left cylinder, a round hole is formed in the electric brush, a bolt b is arranged in the thread groove, and the bolt b penetrates through the round hole; the bolt b is wrapped by an insulating layer, and the edge of the thread groove on the inner wall of the second left cylinder is provided with the insulating layer; the brush upper surface with between the left section of thick bamboo inner wall of second the cover is equipped with the spring on the bolt b, and is in the brush lower surface with between the nut of bolt b the cover is equipped with the spring on the bolt b.
In order to simplify the structure of the damping assembly, ensure the damping effect and avoid electric leakage interference, preferably, a fixing column is arranged in the mounting position, and insulating layers are arranged on the surface of the fixing column and the inner wall of the mounting position; the tail end of the electric brush is provided with a U-shaped socket, and the U-shaped socket can be inserted into the fixing column; the spring is sleeved on the fixing column between the upper surface of the electric brush and the upper wall of the mounting position, and the spring is sleeved on the fixing column between the lower surface of the electric brush and the lower wall of the mounting position.
In some excellent schemes, the invention provides an insulating layer on the surface of the electric brush positioned on the damping component and the mounting position section, which can improve the anti-creeping effect, prolong the service life of the motor and improve the use safety, for example: insulating layers are arranged on the inner wall of the U-shaped socket and the inner wall of the round hole.
Compared with the prior art, the invention has the technical effects that:
the invention has simple structure and convenient assembly, can realize the dual functions of noise reduction and cooling effect, fully utilizes the action of flowing air flow formed by the fan arranged on the rotating shaft, and achieves the purposes of radiating the inside of the radiating shell component and improving the radiating effect; meanwhile, the radiating shell component is formed by a multilayer structure, so that not only can the internal components be protected, but also the transmission paths of electromagnetic noise, friction noise and the like transmitted from the inside to the outside of the motor can be prolonged, and the effect of noise reduction is achieved; simultaneously, when inside brush installation, adopt the damper assembly installation, very big degree has improved brush operating efficiency and effect, avoids the brush to vibrate by a wide margin and leads to the impaired great, forms the defect of great electromagnetic noise even, has improved brush operation operational work environment's stability.
Drawings
Fig. 1 is a schematic sectional view of the overall structure of the invention.
Fig. 2 is a schematic view of the structure shown in fig. 1A.
Fig. 3 is a schematic view of the structure shown in fig. 1B.
Fig. 4 is an enlarged structural diagram of a part of the structure of fig. 1C.
Fig. 5 is a schematic diagram of a top view of the brush of fig. 4.
Fig. 6 is a schematic diagram of the overall structure of the invention.
1-rear cover 2-base 3-radiating shell component 4-front cover 5-rotary shaft 6-exhaust channel 7-through hole
8-sliding assembly 9-rotating plate 10-bearing 11-stator 12-rotor 13-bolt a 14-nut
15-fan 16-air inlet hole 17-wire guide hole 18-thread groove 19-bolt b 20-brush 21-spring
22-mounting position 23-insulating layer 24-U-shaped socket 25-round hole 3.1-right shell plate 3.2-left shell plate
3.3-tail groove 3.4-first right tube 3.5-second right tube 3.6-outer radiating fin 3.7-first left tube
3.8-second left cylinder 3.9-inner radiating fin 8.1-sliding groove 8.2-sliding column.
Detailed Description
The technical solution of the present invention is further defined in the following description with reference to the accompanying drawings and the specific embodiments, but the scope of the claimed invention is not limited to the description.
As shown in fig. 1 to 4 and fig. 6, in this embodiment, the active heat dissipation type motor with a built-in brush shock absorption structure includes a base 2, a rear cover 1, a front cover 4, and a heat dissipation housing assembly 3 provided on the base 2; the rear cover 1 is arranged at the right end of the radiating shell component 3, and the front cover 4 is arranged at the left end of the radiating shell component 3; the heat dissipation shell assembly 3 comprises a left cylindrical barrel assembly and a right cylindrical barrel assembly, and the left cylindrical barrel assembly and the right cylindrical barrel assembly are mutually inserted to form a multilayer airflow channel; the inner wall of the right end of the left cylindrical barrel assembly is connected with the bottom plate of the right cylindrical barrel assembly through a fixed connecting assembly; a stator 11 is arranged on the inner wall of the left cylindrical barrel assembly, bearings 10 are arranged at the center of the bottom in the left cylindrical barrel assembly and the center of the bottom of the right cylindrical barrel assembly, a rotating shaft 5 penetrates through the bearings 10, and a rotor 12 is arranged on the rotating shaft 5; the right end of the rotating shaft 5 penetrates through the bearing 10 to be connected with a fan 15, and the left end of the rotating shaft 5 penetrates through the bearing 10; a plurality of air flow holes are formed in the bottom of the right cylindrical barrel assembly positioned on the outer side of the fixed connecting assembly, a fan cavity is formed between the rear cover 1 and the right end of the radiating shell assembly 3, and the fan cavity is communicated with the air flow channel through the air flow holes; the rear cover 1 is provided with a plurality of air inlet holes 16; the bottom of the left cylindrical barrel component is provided with a mounting position 22, an electric brush 20 is arranged in the mounting position 22, a damping component is arranged on the inner wall of the left cylindrical barrel component, and the electric brush 20 is arranged on the damping component; an insulating layer 23 is arranged between the electric brush 20 and the damping component; the brush 20 is in contact communication with the rotor 12; the front cover 4 is provided with a wire hole 17 for leading a wire into the brush 20; the center of the front cover 4 is provided with a through hole 7 through which the rotating shaft 5 penetrates.
When assembling: firstly, the internal structural components of the motor, such as: after the electric brush 20, the rotor 12, the stator 11, the rotating shaft 5 and the like are installed in the left cylindrical barrel assembly, the left cylindrical barrel assembly and the right cylindrical barrel assembly are mutually inserted to form a radiating shell assembly 3, the rotating shaft respectively penetrates out of the centers of the bottoms of the left cylindrical barrel assembly and the right cylindrical barrel assembly through bearings, the left cylindrical barrel assembly and the right cylindrical barrel assembly are fixedly connected through a fixing and connecting assembly, and the formed radiating shell assembly is integrated; the integral installation of structural components of the radiating shell assembly 3 is realized; and then the left end of the left cylindrical barrel assembly is covered by the front cover 4, and then the right end of the rotating shaft 5 is installed and fixed by the fan 15, and then the assembly is completed by covering the rear cover 1.
In order to facilitate the disassembly and replacement, when the fan 15 is installed on the rotating shaft 5, the screw cap 14 is firstly screwed in the rotating shaft 5 to fix one end of the right cylindrical barrel assembly, then the fan 15 is sleeved on the rotating shaft 5, and then the screw cap 14 is utilized to fix and fasten, so that the fan is installed, the connection convenience is improved, the follow-up disassembly for cleaning, replacement and maintenance of the fan 15 is facilitated, and meanwhile, the stability is also ensured.
The working mode of heat dissipation and noise reduction is as follows: the transmission ways of electromagnetic noise, friction noise and the like generated by the internal work of the motor are prolonged by utilizing the multilayer airflow channels on the radiating shell component 3, the frequency of the noise transmitted out of the motor is greatly reduced, and the purpose of reducing the noise is achieved; meanwhile, the multilayer airflow channels are communicated with the fan cavity, and the fan 15 forms airflow flowing at a high speed in the fan cavity in the rotation process of the rotating shaft 5, so that the airflow enters the airflow channels along with the airflow holes to flow, and the airflow is discharged through continuous circulating flow in the radiating shell assembly 3, thereby achieving the effects of accelerating the heat dissipation in the radiating shell assembly 3, improving the efficiency of active heat dissipation and improving the cooling effect of the motor; and combine brush 20 to set up on damper assembly, set up insulating layer 23 between damper assembly and the brush, when having avoided the electric leakage risk, still ensured the stability of brush 20 operation, improved the shock attenuation effect to brush 20.
As shown in fig. 1, in this embodiment, the left cylindrical barrel assembly includes a left shell plate 3.2, a first left barrel 3.7 and a second left barrel 3.8, and the first left barrel 3.7 and the second left barrel 3.8 are integrally connected to the left shell plate 3.2; the inner diameter of the first left barrel 3.7 is larger than the outer diameter of the second left barrel 3.8, and the length of the first left barrel 3.7 is smaller than the second left barrel 3.8; an airflow channel a is formed between the first left barrel 3.7 and the second left barrel 3.8; the right cylindrical barrel assembly comprises a right shell plate 3.1, a first right barrel 3.4 and a second right barrel 3.5, and the first right barrel 3.4 and the second right barrel 3.5 are integrally connected on the right shell plate 3.1; the inner diameter of the first right barrel 3.4 is larger than the outer diameter of the second right barrel 3.5, the length of the first right barrel 3.4 is equal to the length of the second right barrel 3.5 and is smaller than the length of the second left barrel 3.8; an air flow channel b is formed between the first right barrel 3.4 and the second right barrel 3.5; the multilayer airflow channel is formed by inserting the second right barrel 3.5 into the airflow channel a, inserting the first left barrel 3.7 into the airflow channel b, and dividing the airflow channel a and the airflow channel b into a first airflow channel, a second airflow channel and a third airflow channel from inside to outside; the air flow hole communicates the fan cavity with the first air flow channel, and the end part of the second left cylinder 3.8 is connected with the right shell plate 3.1 through a fixed connecting assembly. During assembly, the end part of the second left cylinder 3.8 is inserted to abut against the right shell plate 3.1, and is fastened and connected by using the fixed connecting assembly, so that the left cylindrical cylinder assembly and the right cylindrical cylinder assembly are assembled to form the heat dissipation shell assembly 3, and then a plurality of layers of airflow channels are formed on the heat dissipation shell assembly 3, and airflow in the fan cavity flows in the plurality of layers of airflow channels, so that the heat is taken out, and the function of self heat dissipation is realized; meanwhile, the transmission path of internal noise can be greatly prolonged, and the purpose of noise reduction is achieved.
As shown in fig. 1, in this embodiment, a tail groove 3.3 is provided at the right end of the right shell plate 3.1, and the rear cover 1 covers the tail groove 3.3 to form the fan cavity. The fan cavity can form a larger space, air flow formation is guaranteed, quick entering into the air flow channel is achieved, and the purpose of heat dissipation is achieved.
In this embodiment, as shown in fig. 1, the outer wall of the second left barrel 3.8 is provided with a plurality of inner cooling fins 3.9. Can accelerate the heat in the second left section of thick bamboo 3.8 to give off fast and enter into the air current say, recycle the mobile air current in the air current say, bring out the heat fast, reach the effect of cooling.
In this embodiment, as shown in fig. 1, the outer wall of the first right cylinder 3.4 is provided with a plurality of outer heat dissipation fins 3.6. The heat dissipation of outside is accelerated, realizes the quick derivation heat of heat conduction casing, improves the radiating effect, and the temperature of the air current that the guarantee air current runner flows out obtains reducing fast, improves the cooling effect.
As shown in fig. 1, in this embodiment, the fixing and connecting assembly includes a threaded hole a at an end of a right end of the second left barrel 3.8, a threaded hole b is provided on the right shell plate 3.1, and the threaded hole a and the threaded hole b have the same size, and a bolt a13 is provided in a matching manner. The radiator casing subassembly 3 of being convenient for and the equipment operation behind second left section of thick bamboo 3.8 internally mounted stator, rotor or other structural component have improved the convenience, have ensured the stability of connecting.
As shown in fig. 1 and 6, in this embodiment, an air discharge passage 6 is formed between the left end of the right cylindrical barrel assembly and the right end of the front cover 4, and the air discharge passage 6 communicates with the third flow passage. The hot air flow in the radiating shell component 3 can flow out quickly, and the radiating effect is improved.
As shown in fig. 1, 2, 4 and 6, in this embodiment, a rotating plate 9 is arranged at the center of the front cover 4, a sliding assembly 8 is arranged between the rotating plate 9 and the front cover 4, the sliding assembly 8 comprises a sliding groove 8.1 arranged on the inner wall of the front cover 4 connected with the rotating plate 9 and a sliding column 8.2 arranged on the outer wall of the rotating plate 9 connected with the front cover 4, the sliding column 8.2 can be inserted into the sliding groove 8.1, and the sliding column 8.2 can freely slide in the sliding groove 8.1; the wire guide hole 17 is arranged on the rotating plate 9; the center of the rotating plate 9 is provided with a through hole 7. The operation of installing the lead, the electric brush 20 and the like at the front end of the radiating shell component 3 is facilitated, and meanwhile, the front cover 4 is convenient to assemble on the radiating shell component 3.
As shown in fig. 4 and 5, in this embodiment, the shock absorbing assembly includes a threaded groove 18 on the inner wall of the second left barrel 3.8, a circular hole 25 on the brush 20, a bolt b19 in the threaded groove 18, and the bolt b19 passing through the circular hole 25; the bolt b19 is wrapped by an insulating layer 23, and the insulating layer 23 is arranged at the edge of the thread groove 18 on the inner wall of the second left barrel 3.8; a spring 21 is sleeved on the bolt b19 between the upper surface of the electric brush 20 and the inner wall of the second left barrel 3.8, and a spring 21 is sleeved on the bolt b19 between the lower surface of the electric brush 20 and a nut of the bolt b 19. Under the effect of realization spring 21, can reach the regulation to brush 20 vibration process, prevent that brush 20 from vibrating by a wide margin, improve the shock attenuation effect to brush 20.
As shown in fig. 4 and 5, in this embodiment, a fixing column is disposed in the mounting position 22, and an insulating layer 23 is disposed on both a surface of the fixing column and an inner wall of the mounting position 22; a U-shaped socket 24 is arranged at the tail end of the electric brush 20, and the U-shaped socket 24 can be inserted into the fixing column; a spring 21 is sleeved on the fixed column between the upper surface of the electric brush 20 and the upper wall of the mounting position 22, and a spring 21 is sleeved on the fixed column between the lower surface of the electric brush 20 and the lower wall of the mounting position 22. Can ensure that brush 20 is stable with movable mounting on installation position 22, improve the elasticity cushioning effect of brush 20 course of operation, avoid the vibration to lead to brush work operation not smooth, ensure the stability of brush 20 operation and course, improve the shock attenuation effect to brush 20.
The invention may be understood and carried out in any other way than the details of the prior art, or the common general knowledge and conventional technical solutions known to those skilled in the art, for example: specific relations and structures between the stator 11 and the rotor 12, etc., can be referred to, for example, as follows: the corresponding structure disclosed in patent No. 202021019310.5. For the orientation terms set forth in the inventive creation, for example: left, right, etc., as one skilled in the art will understand from the drawings to determine the precise terms of orientation. For another example: when words such as inner and outer are described, a person skilled in the art should describe the structure of the motor from the inside to the outside.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. An active heat dissipation type motor with a built-in electric brush shock absorption structure is characterized by comprising a base (2), a rear cover (1), a front cover (4) and a heat dissipation shell component (3) arranged on the base (2); the rear cover (1) is arranged at the right end of the radiating shell component (3), and the front cover (4) is arranged at the left end of the radiating shell component (3); the radiating shell assembly (3) comprises a left cylindrical barrel assembly and a right cylindrical barrel assembly, and the left cylindrical barrel assembly and the right cylindrical barrel assembly are mutually inserted to form a multilayer airflow channel; the inner wall of the right end of the left cylindrical barrel assembly is connected with the bottom plate of the right cylindrical barrel assembly through a fixed connecting assembly; a stator (11) is arranged on the inner wall of the left cylindrical barrel assembly, bearings (10) are arranged at the center of the bottom in the left cylindrical barrel assembly and the center of the bottom of the right cylindrical barrel assembly, a rotating shaft (5) penetrates through the bearings (10), and a rotor (12) is arranged on the rotating shaft (5); the right end of the rotating shaft (5) penetrates through the bearing (10) to be connected with a fan (15), and the left end of the rotating shaft (5) penetrates through the bearing (10); a plurality of air flow holes are formed in the bottom of the right cylindrical barrel assembly and positioned on the outer side of the fixed connecting assembly, a fan cavity is formed between the rear cover (1) and the right end of the radiating shell assembly (3), and the fan cavity is communicated with the air flow channel through the air flow holes; a plurality of air inlets (16) are arranged on the rear cover (1); the bottom of the left cylindrical barrel assembly is provided with a mounting position (22), an electric brush (20) is arranged in the mounting position (22), the inner wall of the left cylindrical barrel assembly is provided with a damping assembly, and the electric brush (20) is arranged on the damping assembly; an insulating layer (23) is arranged between the electric brush (20) and the damping component; the electric brush (20) is in contact communication with the rotor (12); a lead hole (17) for leading a lead into and connecting the electric brush (20) is formed in the front cover (4); a through hole (7) for the rotating shaft (5) to penetrate out is formed in the center of the front cover (4);
the left cylindrical barrel assembly comprises a left shell plate (3.2), a first left barrel (3.7) and a second left barrel (3.8), and the first left barrel (3.7) and the second left barrel (3.8) are integrally connected to the left shell plate (3.2); the inner diameter of the first left barrel (3.7) is larger than the outer diameter of the second left barrel (3.8), and the length of the first left barrel (3.7) is smaller than that of the second left barrel (3.8); an airflow channel a is formed between the first left barrel (3.7) and the second left barrel (3.8); the right cylindrical barrel assembly comprises a right shell plate (3.1), a first right barrel (3.4) and a second right barrel (3.5), and the first right barrel (3.4) and the second right barrel (3.5) are connected on the right shell plate (3.1) in an integrated forming mode; the inner diameter of the first right barrel (3.4) is larger than the outer diameter of the second right barrel (3.5), the length of the first right barrel (3.4) is equal to the length of the second right barrel (3.5) and is smaller than the length of the second left barrel (3.8); the first right barrel (3.4) and the second right barrel (3.5) form an air flow channel b; the multilayer airflow channel is formed by inserting the second right barrel (3.5) into the airflow channel a, inserting the first left barrel (3.7) into the airflow channel b, and dividing the airflow channel a and the airflow channel b into a first airflow channel, a second airflow channel and a third airflow channel from inside to outside; the air flow hole communicates the fan cavity with the first air flow channel, and the end part of the second left cylinder (3.8) is connected with the right shell plate (3.1) through a fixed connecting assembly.
2. The active heat dissipation type motor with a built-in brush shock absorption structure according to claim 1, wherein a tail groove (3.3) is formed at the right end of the right shell plate (3.1), and the rear cover (1) covers the tail groove (3.3) to form the fan cavity.
3. The active heat dissipation type motor of a built-in brush damper structure according to claim 1, wherein the second left cylinder (3.8) is provided at an outer wall thereof with a plurality of inner heat dissipating fins (3.9).
4. The active heat dissipation type motor of a built-in brush damper structure according to claim 1, wherein the outer wall of the first right cylinder (3.4) is provided with a plurality of outer heat dissipation fins (3.6).
5. The active heat dissipation type motor with built-in brush shock absorption structure according to claim 1, wherein the fixing and connecting assembly comprises a threaded hole a at the end of the right end of the second left barrel (3.8), a threaded hole b is provided on the right shell plate (3.1), and the threaded hole a and the threaded hole b are of the same size and matched with each other with a bolt a (13).
6. The active heat dissipation type motor of a built-in brush damper structure according to claim 1, wherein the right cylinder assembly forms an air discharge passage (6) between a left end thereof and a right end of the front cover (4), the air discharge passage (6) communicating with the third air flow passage.
7. The active heat dissipation type motor with built-in brush shock absorption structure according to claim 1, wherein a rotating plate (9) is provided at the center of the front cover (4), and a sliding assembly (8) is provided between the rotating plate (9) and the front cover (4), the sliding assembly (8) comprises a sliding groove (8.1) provided on the inner wall of the front cover (4) connected to the rotating plate (9) and a sliding column (8.2) provided on the outer wall of the rotating plate (9) connected to the front cover (4), the sliding column (8.2) can be inserted into the sliding groove (8.1), and the sliding column (8.2) can freely slide in the sliding groove (8.1); the rotating plate (9) is provided with the wire guide hole (17); the center of the rotating plate (9) is provided with a through hole (7).
8. The active heat dissipation type motor of a built-in brush damper structure according to claim 1, wherein the damper assembly comprises a screw groove (18) provided on an inner wall of the second left barrel (3.8), a circular hole (25) provided on the brush (20), a bolt b (19) provided in the screw groove (18), and the bolt b (19) passing through the circular hole (25); the bolt b (19) is wrapped by an insulating layer (23), and the edge of the thread groove (18) on the inner wall of the second left barrel (3.8) is provided with the insulating layer (23); brush (20) upper surface with between the second left barrel (3.8) inner wall the cover is equipped with spring (21) on bolt b (19), and brush (20) lower surface with between the nut of bolt b (19) the cover is equipped with spring (21) on bolt b (19).
9. The active heat dissipation type motor with the built-in brush shock absorption structure according to claim 1, wherein a fixed column is arranged in the mounting position (22), and an insulating layer (23) is arranged on the surface of the fixed column and the inner wall of the mounting position (22); a U-shaped socket (24) is arranged at the tail end of the electric brush (20), and the U-shaped socket (24) can be inserted into the fixing column; a spring (21) is sleeved on the fixed column between the upper surface of the electric brush (20) and the upper wall of the mounting position (22), and a spring (21) is sleeved on the fixed column between the lower surface of the electric brush (20) and the lower wall of the mounting position (22).
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| CN107124068A (en) * | 2017-06-09 | 2017-09-01 | 王纬霞 | A kind of heat sinking magneto |
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