CN112103916B

CN112103916B - Detection type overcurrent protection device convenient to judge

Info

Publication number: CN112103916B
Application number: CN202011117799.4A
Authority: CN
Inventors: 单奇
Original assignee: Xinchang Yinbang Power Technology Co ltd
Current assignee: Wuhan Kaizeyuan Technology Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-04-27
Anticipated expiration: 2040-10-19
Also published as: CN112103916A

Abstract

The invention discloses a detection type overcurrent protection device convenient to judge, which comprises a box body, wherein a power-on plate is embedded on the inner wall of the top of the box body, the inner wall of the bottom of the box body is rotatably connected with a conductive column through a bearing, the upper end of the conductive column is coaxially welded with a rotating plate made of an insulating material, a memory metal is fixedly connected between the rotating plate and the power-on plate, and the lower end part of the conductive column is coaxially welded with a circular connecting plate. Has the advantages that: the invention can respond to the overload current in the household circuit and the short circuit problem of the electrical appliance in time, protect the household circuit and the electrical appliance, and simultaneously, the electrical appliance of the storage battery in the box body is connected in series, the current of the storage battery can enable the prompting lamp to emit a large amount of light by utilizing the small phase resistance value of the internal circuit of the electrical appliance with short circuit, so that a user can quickly find out which electrical appliance has the short circuit problem, and the problem is conveniently and timely solved.

Description

Detection type overcurrent protection device convenient to judge

Technical Field

The invention relates to the technical field of related equipment of electric appliances, in particular to a detection type over-current protection device convenient to judge.

Background

Overcurrent refers to an amount of current that exceeds the expected amount passing through a conductor, resulting in excessive heating, and risk of fire or damage, possible causes of overcurrent include short circuits, excessive loads, incorrect designs or ground faults, and the risk of overcurrent being controlled typically using fuses, circuit breakers, temperature sensors and current limiters

The device that consumes electric energy in the circuit is called electrical apparatus (also called load), the function of electrical apparatus is to change the electric energy into other forms ability, for the use of household electrical apparatus, overcurrent divide into overcurrent and short-circuit current into generally probably taking place, and generally adopt fuse or earth leakage protector to in time break the circuit of family among the prior art, however these protection device can't the fast judgement be which electrical apparatus appears the short circuit problem, it is comparatively troublesome to maintain, and influence the normal use of other electrical apparatus, for this reason, we have proposed a detection type overcurrent protection device convenient to judge.

Disclosure of Invention

The invention aims to solve the problems that although a fuse or a leakage protector adopted in the prior art can timely cut off power to protect a household circuit, the problem that which electrical appliance is short-circuited cannot be judged, the need of one-by-one inspection during maintenance is troublesome, and the normal use of other electrical appliances is influenced, and provides a detection type overcurrent protection device convenient to judge.

In order to achieve the purpose, the invention adopts the following technical scheme: a detection type overcurrent protection device convenient to judge comprises a box body, wherein a power-on plate is embedded on the inner wall of the top of the box body, the inner wall of the bottom of the box body is rotatably connected with a conductive column through a bearing, the upper end of the conductive column is coaxially welded with a rotating plate made of an insulating material, a memory metal is fixedly connected between the rotating plate and the power-on plate, the lower end part of the conductive column is coaxially welded with a round connecting plate, the inner wall of the bottom of the box body is fixedly provided with two conductive blocks, the upper ends of the two conductive blocks are contacted with the lower end face of the connecting plate, the power-on plate and the conductive column are connected in series through a conducting wire, and a;

the connecting plate is provided with a pair of conducting layers, a pair of resistance layers and a pair of electric connection layers, each pair of conducting layers, resistance layers and electric connection layers are symmetrically distributed by taking the conducting columns as centers, each conducting layer and each resistance layer are arranged adjacently, the two conducting layers are connected with the conducting columns, and the conducting layers, the resistance layers and the electric connection layers on the connecting plate are made of insulating materials except the conducting layers.

In the above detection type overcurrent protection device convenient for judgment, the detection device comprises a control box, the control box is fixed on the inner wall of one side of the box body, the control box and the rotating plate are at the same height, a vertical partition plate is hermetically connected in the control box, a sliding plate is slidably connected to one side of the control box, which is far away from the rotating plate, of the vertical partition plate, a mutually perpendicular sliding rod is welded on the sliding plate, one end of the sliding rod penetrates through the side wall of the control box and extends to the outer side of the box body, a button is fixed at one end of the sliding rod, which is located outside the box body, two first springs are fixedly connected between the button and the outer wall of the box body, one end of the sliding rod, which is far away from the button, penetrates through the vertical partition plate and is welded with a piston block, a horizontal partition plate is fixed on the inner wall of one side of the, the lower end face of the horizontal partition plate is connected with a sliding block in a sealing and sliding mode together with the inner wall of the control box, one side, away from the vertical partition plate, of the sliding block is welded with a limiting rod, one end of the limiting rod penetrates through the side wall of the control box and is abutted to the annular face of the rotating plate, the inner wall of the second spring and the inner wall of the control box are connected with the sliding block in a sleeved mode, a through hole is formed in the position, close to one end of the rotating plate, of the horizontal partition plate, and a limiting groove is formed in the.

In foretell detection type overcurrent protection device convenient to judge, the control box is located one side inner wall of slide and has buried the electro-magnet underground, be provided with the battery in the box body, be provided with the warning light on the outer wall of box body, the electro-magnet passes through the wire and establishes ties with battery, warning light and two electricity connection layers, the control box is located one side space that horizontal baffle was kept away from to vertical baffle and is filled with magnetorheological suspensions.

Compared with the prior art, the invention has the advantages that:

1. when overcurrent occurs, the temperature of the power-on plate is increased more normally and reaches the abnormal temperature of the memory metal to generate torsional deformation, the rotating plate and the connecting plate are driven to rotate, two conductive blocks are in contact with the resistance layer, namely, a resistor is connected in series in a circuit of an electrical appliance, the current reducing effect is achieved, the accelerated degradation of the insulation of the electrical appliance wire is avoided, the service life is shortened, after the current is recovered, the temperature of the memory metal is reduced, the torsion is recovered to the original position, the conductive blocks are connected with the conductive layers again, and the self-recovery function is achieved;

2. when short circuit occurs inside the electrical appliance, the current is increased rapidly at the moment, the temperature of the electrified plate rises suddenly, the memory metal generates larger torsional deformation to drive the rotating plate and the connecting plate to rotate rapidly, the electrical appliance is disconnected to protect courage, meanwhile, the limiting rod enters the limiting groove of the rotating plate under the action of the elastic force of the second spring to limit the rotation of the rotating plate, the short circuit self-recovery is prevented, and the normal work of other electrical appliances is not influenced because the short-circuit electrical appliance is disconnected by the protection device;

3. after the short circuit power failure, the two conductive blocks are in contact connection with the two contact points on the connecting plate, so that the storage battery electrical appliances in the box body are connected in series, the internal circuit of the electrical appliances using the short circuit is equivalent to a small resistance value of a wire, and the current of the storage battery enables the prompting lamp to emit a large amount of light, so that a user can quickly find which electrical appliance has a short circuit problem, and the problem is conveniently solved in time;

4. after the short-circuit electric appliance is repaired, the storage battery detects the electric appliance again, if the short-circuit problem is still solved, the prompting lamp is still in high brightness, and meanwhile, after the electromagnet is electrified, a magnetic field is generated to act on magnetorheological fluid in the control box, so that the magnetorheological fluid is changed into high-viscosity low-fluidity liquid, a user is prevented from pressing a button under the condition that the short-circuit problem is not solved, the electric appliance is connected to a household power supply, and the electric appliance is damaged

Drawings

Fig. 1 is a schematic structural diagram of a detection type overcurrent protection apparatus for easy determination according to the present invention;

fig. 2 is an enlarged schematic view of a point a of the detection type overcurrent protection apparatus for easy determination according to the present invention;

fig. 3 is a top view of a connecting plate portion of a detecting type overcurrent protection apparatus for easy determination according to the present invention;

fig. 4 is a top view of a rotating plate of the overcurrent protection device with easy-to-determine detection according to the present invention.

In the figure: the device comprises a box body 1, a power-on plate 2, a conductive column 3, a rotating plate 4, a memory metal 5, a connecting plate 6, a conductive block 7, a conductive layer 801, a resistive layer 802, a conductive layer 803, a control box 9, a vertical partition plate 10, a sliding plate 11, a sliding rod 12, an electromagnet 13, a liquid flow hole 14, a button 15, a first spring 16, a horizontal partition plate 17, a sliding block 18, a limiting rod 19, a second spring 20, a piston block 21, a limiting groove 22 and a prompting lamp 23.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are only for illustrative purposes and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-4, a detection type overcurrent protection device convenient for judgment comprises a box body 1, a power-on plate 2 is embedded on the inner wall of the top of the box body 1, the inner wall of the bottom of the box body 1 is rotatably connected with a conductive column 3 through a bearing, a rotating plate 4 made of an insulating material is coaxially welded at the upper end of the conductive column 3, a memory metal 5 is fixedly connected between the rotating plate 4 and the power-on plate 2, a circular connecting plate 6 is coaxially welded at the lower end part of the conductive column 3, two conductive blocks 7 are fixed on the inner wall of the bottom of the box body 1, the upper ends of the two conductive blocks 7 are contacted with the lower end face of the connecting plate 6, the power-on plate 2 and the conductive column 3 are connected;

the connecting board 6 is provided with a pair of conductive layers 801, a pair of resistive layers 802 and a pair of contact layers 803, each pair of conductive layers 801, resistive layers 802 and contact layers 803 are symmetrically distributed with the conductive column 3 as the center, each conductive layer 801 and resistive layer 802 are adjacently arranged, the two conductive layers 801 are connected with the conductive column 3, and the conductive layers 801, resistive layers 802 and contact layers 803 on the connecting board 6 except the conductive layers 801, resistive layers 802 and contact layers 803 are made of insulating materials.

The detection device comprises a control box 9, the control box 9 is fixed on the inner wall of one side of a box body, the control box 9 and a rotating plate 4 are at the same height, a vertical partition plate 10 is hermetically connected in the control box 9, a sliding plate 11 is slidably connected to one side of the vertical partition plate 10 far away from the rotating plate 4 in the control box 9, a mutually perpendicular sliding rod 12 is welded on the sliding plate 11, one end of the sliding rod 12 penetrates through the side wall of the control box 9 and extends to the outer side of the box body 1, a button 15 is fixed at one end of the sliding rod 12 outside the box body 1, two first springs 16 are fixedly connected between the button 15 and the outer wall of the box body 1, one end of the sliding rod 12 far away from the button 15 penetrates through the vertical partition plate 10 and is welded with a piston block 21, a horizontal partition plate 17 is fixed on the inner wall of one side of the control box 9 far away from, the lower terminal surface of horizontal partition 17 and the common sealed sliding connection of inner wall of control box 9 have slider 18, slider 18 keeps away from one side welding of vertical baffle 10 has a restriction pole 19, the lateral wall that control box 9 was run through to the one end of restriction pole 19 offsets with the annular face of rotor plate 4, the cover is equipped with a second spring 20 and is connected with the inner wall and the slider 18 of control box 9 on the restriction pole 19, horizontal partition 17 is close to rotor plate 4 one end and has been seted up a through-hole and be used for circulating gas to maintain the gas pressure of horizontal partition 17 upper and lower side, a restriction groove 22 has been seted up on rotor plate 4, the place angular position of restriction groove 22 on rotor plate 4 is the same with conducting layer 803 place angular position on connecting plate 6.

An electromagnet 13 is embedded in the inner wall of the control box 9, which is positioned on one side of the sliding plate 11, a storage battery is arranged in the box body 1, a prompt lamp 23 is arranged on the outer wall of the box body 1, the electromagnet 13 is connected with the storage battery, the prompt lamp 23 and the two electric-contact layers 803 in series through conducting wires, magnetorheological fluid is filled in the space of the control box 9, which is positioned on one side of the vertical partition plate 10, which is far away from the horizontal partition plate 17, and is a suspension body formed by mixing high-permeability and low-magnetic-hysteresis tiny soft magnetic particles and non-magnetic-conductive liquid, and the suspension body presents the characteristic of; and under the action of strong magnetic field, it exhibits high viscosity and low flowability.

In the invention, the device is connected to a power line of an electric appliance, two plugs of the electric appliance are connected with the power-on plate 2 and the conductive column 3 in series, two leads at one end of the electric appliance far away from the plugs are respectively connected with the two conductive blocks 7, and current enters the electric appliance from the power-on plate 2, the conductive column 3, the conductive layer 801 and the conductive blocks 7 in sequence in a normal working state.

When overcurrent occurs in a household circuit, the temperature of the current of the power-on plate 2 is increased more than a normal value, the abnormal temperature of the memory metal 5 is changed into torsional deformation, the rotating plate 4 and the connecting plate 6 are driven to rotate, the two conductive blocks 7 are in contact with the resistance layer 802, namely, a resistor is connected in series in an electric appliance circuit, the current reducing effect is achieved, the current flowing through the electric appliance does not exceed the rated current, the accelerated degradation of the electric appliance wire insulation and the shortening of the service life are avoided, after the current is recovered, the temperature of the memory metal 5 is reduced, the memory metal 5 is twisted and recovered to the original position, the connecting plate 6 is rotated to the original position, the conductive blocks 7 are connected with the conductive layer 801 again, and the.

When short circuit occurs inside an electrical appliance, the current is increased rapidly at the moment, the temperature of the electrified plate 2 rises suddenly, the memory metal 5 generates large torsional deformation to drive the rotating plate 4 and the connecting plate 6 to rotate rapidly until the limiting rod 19 enters the limiting groove 22 of the rotating plate 4 under the action of the elastic force of the second spring 20, the rotation of the rotating plate 4 is limited to prevent self-recovery, the two conductive blocks 7 are in contact connection with the two contact layers 803 on the connecting plate 6 at the moment and are disconnected with a household circuit to protect the electrical appliance, meanwhile, a storage battery in the box body 1 is connected into a lead to be connected with the electrical appliance in series to detect the electrical appliance, the internal circuit of the electrical appliance with the short circuit is equivalent to a lead with a small resistance value, the current of the storage battery enables the prompting lamp 23 to emit light with a large quantity, and a user can quickly judge which electrical appliance has the short; after the short-circuit electric appliance is repaired, the storage battery detects the electric appliance again, if the short-circuit problem is still existed, the prompting lamp 23 is still in high brightness, meanwhile, after the electromagnet 13 is electrified, a magnetic field is generated to act on the magnetorheological fluid in the control box 9, the magnetorheological fluid is changed into high-viscosity low-fluidity liquid, the user is prevented from pressing the button 15 under the condition that the short-circuit problem is not solved, the electric appliance is connected to a household power supply, the electric appliance is damaged, after the short-circuit problem is solved, the electric appliance recovers the normal resistance value, the current of the detection circuit is small, the light of the prompting lamp 23 is dark, the magnetic field of the electromagnet 13 is weakened, the magnetorheological fluid has better fluidity, when the button 15 is pressed, the piston block 21 slides inwards, the slide block 18 slides towards the vertical partition plate 10 through air pressure transmission, the limiting rod 19 leaves the limiting groove 22 to remove the limitation on the rotating plate 4, the electrical appliance will reconnect to the home circuit.

Although the terms of the box body 1, the current-carrying plate 2, the conductive column 3, the rotating plate 4, the memory metal 5, the connecting plate 6, the conductive block 7, the conductive layer 801, the resistive layer 802, the current-carrying layer 803, the control box 9, the vertical partition 10, the sliding plate 11, the sliding rod 12, the electromagnet 13, the liquid flowing hole 14, the button 15, the first spring 16, the horizontal partition 17, the sliding block 18, the limiting rod 19, the second spring 20, the piston block 21, the limiting groove 22, the warning light 23, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A detection type overcurrent protection device convenient for judgment comprises a box body (1) and is characterized in that, a power-on plate (2) is embedded on the inner wall of the top of the box body (1), the inner wall of the bottom of the box body (1) is rotatably connected with a conductive post (3) through a bearing, the upper end of the conductive post (3) is coaxially welded with a rotating plate (4) made of insulating material, a memory metal (5) is fixedly connected between the rotating plate (4) and the electrifying plate (2), the lower end part of the conductive post (3) is coaxially welded with a circular connecting plate (6), two conductive blocks (7) are fixed on the inner wall of the bottom of the box body (1), the upper ends of the two conductive blocks (7) are contacted with the lower end surface of the connecting plate (6), the power-on plate (2) and the conductive column (3) are connected in series through a conducting wire, and a detection device is arranged in the box body (1);

the connecting plate (6) is provided with a pair of conducting layers (801), a pair of resistive layers (802) and a pair of power connection layers (803), each pair of conducting layers (801), resistive layers (802) and power connection layers (803) are symmetrically distributed by taking a conducting post (3) as a center, each conducting layer (801) and resistive layer (802) are adjacently arranged, the two conducting layers (801) and the conducting post (3) are connected, and the conducting layers (801), the resistive layers (802) and the power connection layers (803) on the connecting plate (6) except for the conducting layers (801), the resistive layers (802) and the power connection layers (803) are all;

the detection device comprises a control box (9), the control box (9) is fixed on the inner wall of one side of a box body, the control box (9) and a rotating plate (4) are at the same height, a vertical partition plate (10) is hermetically connected in the control box (9), one side, which is far away from the rotating plate (4), of the vertical partition plate (10) in the control box (9) is slidably connected with a sliding plate (11), a mutually vertical sliding rod (12) is welded on the sliding plate (11), one end of the sliding rod (12) penetrates through the side wall of the control box (9) and extends to the outer side of the box body (1), a button (15) is fixed at one end of the sliding rod (12) which is positioned outside the box body (1), two first springs (16) are fixedly connected between the button (15) and the outer wall of the box body (1), one end, which is far away from the button (15), of the sliding rod (12) penetrates through the vertical partition plate (, a horizontal clapboard (17) is fixed on the inner wall of one side of the control box (9) far away from the sliding plate (11), the upper end surface of the horizontal clapboard (17) and the inner wall of the control box (9) are connected with the piston block (21) in a sealing and sliding way, the lower end surface of the horizontal clapboard (17) and the inner wall of the control box (9) are connected with a sliding block (18) in a sealing and sliding way, a limiting rod (19) is welded on one side of the sliding block (18) far away from the vertical partition plate (10), one end of the limiting rod (19) penetrates through the side wall of the control box (9) and is abutted against the annular surface of the rotating plate (4), a second spring (20) is sleeved on the limiting rod (19) and connected with the inner wall of the control box (9) and the sliding block (18), one end of the horizontal partition plate (17) close to the rotating plate (4) is provided with a through hole, and the rotating plate (4) is provided with a limiting groove (22);

control box (9) are located and have buried electro-magnet (13) underground in one side inner wall of slide (11), be provided with the battery in box body (1), be provided with warning light (23) on the outer wall of box body (1), electro-magnet (13) are established ties through wire and battery, warning light (23) and two electricity connection layers (803), control box (9) are located one side space that horizontal baffle (17) was kept away from in vertical baffle (10) and are filled with magnetorheological suspensions.