CN219351029U

CN219351029U - Electrical control cabinet with piezoresistor protection structure

Info

Publication number: CN219351029U
Application number: CN202320833814.8U
Authority: CN
Inventors: 李小燕; 黄方永
Original assignee: Wuhu Senmiao Electric Co ltd
Current assignee: Wuhu Senmiao Electric Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-07-14
Anticipated expiration: 2033-04-14

Abstract

The utility model discloses an electrical control cabinet with a piezoresistor protection structure, which comprises a control cabinet body and an element bearing plate fixedly arranged on the front surface inside the control cabinet body; a breaker body for cutting off a circuit is fixedly arranged above the front surface of the element bearing plate at equal distance; further comprises: a circuit bearing plate is fixedly arranged on the left side below the front surface of the element bearing plate; the middle part of the right side of the front surface of the circuit bearing plate is fixedly provided with a filter capacitor, and the upper part of the right side of the front surface of the circuit bearing plate is fixedly provided with a rectifier bridge; the piezoresistor body is fixedly arranged below the right side of the front face of the circuit bearing plate. This electrical control cabinet with piezo-resistor protective structure, through the protection frame upset of both sides about the control cabinet body internal circuit loading board, prevent that direct contact from leading to the piezo-resistor body to take place the slope crookedly, take place to break away from through the anticreep roof simultaneously for protect inside piezo-resistor body.

Description

Electrical control cabinet with piezoresistor protection structure

Technical Field

The utility model relates to the technical field of electrical control cabinets, in particular to an electrical control cabinet with a piezoresistor protection structure.

Background

The electrical control cabinet is characterized in that switching equipment, a measuring instrument, protection electrical appliances and auxiliary equipment are assembled in or on a closed or semi-closed metal cabinet according to electrical wiring requirements, and a piezoresistor arranged in the electrical control cabinet prevents excessive surge, and voltage clamping is performed when a circuit bears overvoltage, so that redundant current is absorbed to protect sensitive devices.

Most of piezoresistors installed in the electrical control cabinet are usually connected to the controlled circuit board through soldering tin in the actual use process, the electrical control cabinet is easy to loosen or even fall off the soldering tin of the piezoresistors under the conditions of overhauling and long-term electronic component work, the unstable working circuit of the electronic components in the electrical control cabinet is extremely easy to damage, and the electrical control cabinet is likely to cause an electric appliance fire accident in a short circuit state when the piezoresistors are released once failure and abnormally connected with the circuit board.

An electrical control cabinet with a piezoresistor protection structure is provided so as to solve the problems set forth in the above.

Disclosure of Invention

The utility model aims to provide an electrical control cabinet with a piezoresistor protection structure, which aims to solve the problems that most piezoresistors installed in the electrical control cabinet in the market in the prior art are usually connected to a controlled circuit board through soldering tin in the actual use process, the soldering tin of the piezoresistor is easy to loosen or even fall off under the conditions that the electrical control cabinet is overhauled and an electronic element works for a long time, so that an unstable working circuit of the electronic element in the electrical control cabinet is extremely easy to damage, and the electrical appliance is likely to catch fire in a short circuit state when the piezoresistor is released once failure and is abnormally connected with the circuit board.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an electrical control cabinet with a piezoresistor protection structure comprises a control cabinet body and an element bearing plate fixedly arranged on the front surface inside the control cabinet body;

the circuit breaker body for cutting off the circuit is fixedly arranged above the front surface of the element bearing plate at equal distance, and an intermediate relay for amplifying an output signal is fixedly arranged in the middle of the front surface of the element bearing plate;

further comprises:

the circuit bearing plate is fixedly arranged on the left side below the front surface of the element bearing plate, the switch transformer is fixedly arranged on the right side above the front surface of the circuit bearing plate, and the switch bridge pipes are fixedly arranged on the left side and the right side above the front surface of the circuit bearing plate;

the middle part of the right side of the front surface of the circuit bearing plate is fixedly provided with a filter capacitor, and the upper part of the right side of the front surface of the circuit bearing plate is fixedly provided with a rectifier bridge;

the circuit bearing plate is characterized in that a piezoresistor body is fixedly arranged below the right side of the front surface of the circuit bearing plate, a buzzer capable of providing an alarm sound source is fixedly arranged below the left side of the front surface of the circuit bearing plate, and a silicon controlled thyristor is fixedly arranged on the right side of the circuit bearing plate.

Preferably, the breaker body, the intermediate relay and the circuit bearing plate on the front face of the element bearing plate are all arranged in a state of front face forward, and the element bearing plate and the control cabinet body are vertically and coaxially distributed, and the element bearing plate is arranged through the control cabinet body.

Preferably, the upper and lower sides of the piezoresistor body are provided with protection frames, the bottom ends of the upper and lower side protection frames are respectively hinged to the upper and lower sides of the front surface of the circuit bearing board, and the piezoresistor body is protected through the protection frames.

Preferably, the outermost side of the piezoresistor body is encapsulated with a resin encapsulation layer, the silver electrode layer is fixedly arranged in the piezoresistor body, the bottom surface of the piezoresistor body is fixedly provided with a tin-plated pin, and the piezoresistor body is connected with the circuit bearing board through the tin-plated pin.

Preferably, the inside equidistance of protection frame of symmetry installation is installed and is contradicted the arc board, and set up through main spacing spring interconnect between the outer wall of every conflict arc board and the inner wall of protection frame to every is contradicted the arc board and is all laminated and is connected in the resin encapsulation layer in the piezo-resistor body outside, reaches insulating effect through the resin encapsulation layer.

Preferably, the top surface fixed mounting of circuit carrier plate top protective frame has the anticreep roof, and circuit carrier plate below protective frame's top surface has seted up and has held the guide slot to below protective frame's top surface left and right sides all articulates and is connected with convertible anticreep pole, and the junction of convertible anticreep pole and protective frame of left and right sides is provided with torsion spring moreover, carries out spacingly to the anticreep roof through convertible anticreep pole.

Preferably, the driving gear is rotatably arranged at the center position of the top surface of the protective frame below, driven racks are slidably arranged at the left side and the right side of the top surface of the protective frame below, the driven racks at the left side and the right side are meshed and connected with the outer wall of the driving gear, and the outer wall of the driven racks at the left side and the right side and the turnover type anti-falling rods at the left side and the right side are mutually connected through pull ropes, so that the turnover type anti-falling rods are driven to turn through the pull ropes.

Compared with the prior art, the utility model has the beneficial effects that: this electrical control cabinet with piezo-resistor protective structure, through the protection frame upset of both sides about the control cabinet body internal circuit loading board, prevent that direct contact from leading to the piezo-resistor body to take place the slope crookedly, take place to break away from through the anticreep roof simultaneously for protect inside piezo-resistor body, its concrete content is as follows:

1. the anti-drop top plate of the top surface of the protective frame penetrates through the lower containing guide groove, and meanwhile, the driving gear in the containing guide groove is rotatably installed and drives the driven rack to move, so that the driven rack drives the connected turnover anti-drop rod to turn over through the pull rope, the anti-drop top plate is attached to the bottom surface of the containing guide groove, and then the torsion spring in the turnover anti-drop rod is reset to prevent the anti-drop top plate from being separated, so that the internal piezoresistor body is protected;

2. when the circuit bearing plate is used for mounting the piezoresistor body, tin plating pins on the left side and the right side of the bottom surface of the piezoresistor body are connected to the inside of the circuit bearing plate, the effect of connection is achieved through soldering tin, and then the circuit bearing plate is rotationally hinged to the protective frames on the upper side and the lower side of the circuit bearing plate, so that the abutting arc plates connected to the inside of the protective frames through the main limiting spring are attached to the outer wall of the piezoresistor body, and further the piezoresistor body is prevented from tilting and skewing due to direct contact;

3. the switch board body installs inside component loading board, and the component loading board installs circuit breaker body, intermediate relay and circuit loading board to not frequently start asynchronous machine through the circuit breaker body, carry out the protection to power cord, motor etc. intermediate relay when the contact logarithm of other electrical appliances is insufficient simultaneously during the use, can expand their contact logarithm with the help of intermediate relay, then through the operation of switch transformer, switch bridge pipe, filter capacitor, rectifier bridge, the piezo-resistor body of circuit loading board top surface guarantee the normal work of the inside circuit component of switch board body 1.

Drawings

FIG. 1 is a schematic diagram of the front structure of the present utility model;

FIG. 2 is a schematic diagram of the front structure of a circuit carrier of the present utility model;

FIG. 3 is a schematic diagram of the mounting structure of the varistor body of the present utility model;

FIG. 4 is a schematic view of an anti-drop top plate mounting structure according to the present utility model;

FIG. 5 is a schematic view of the turnover type anti-drop bar mounting structure of the present utility model;

fig. 6 is a schematic view of the mounting structure of the driven rack of the present utility model.

In the figure: 1. a control cabinet body; 2. a component carrying plate; 3. a circuit breaker body; 4. an intermediate relay; 5. a circuit carrier; 6. a switching transformer; 7. a switching bridge tube; 8. a filter capacitor; 9. a rectifier bridge; 10. a varistor body; 11. a buzzer; 12. a thyristor of silicon controlled rectifier; 13. a protective frame; 14. a resin encapsulation layer; 15. a silver electrode layer; 16. tinning pins; 17. an arc abutting plate; 18. a main limit spring; 19. an anti-falling top plate; 20. a receiving guide groove; 21. a turnover type anti-falling rod; 22. a torsion spring; 23. a drive gear; 24. a driven rack; 25. and (5) pulling the rope.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the present utility model provides the following technical solutions: an electrical control cabinet with a piezoresistor protection structure comprises a control cabinet body 1 and an element bearing plate 2 fixedly arranged on the front surface inside the control cabinet body 1; a breaker body 3 for cutting off a circuit is fixedly arranged above the front surface of the element bearing plate 2 at equal distance, and an intermediate relay 4 for amplifying an output signal is fixedly arranged in the middle of the front surface of the element bearing plate 2; further comprises: the element bearing plate 2 is used for installing the breaker body 3, the intermediate relay 4 and the circuit bearing plate 5, and protecting a power line, a motor and the like by the fact that the breaker body 3 does not frequently start an asynchronous motor, and meanwhile, when the intermediate relay 4 is used, when the contact logarithm of other electric appliances is insufficient, the contact logarithm of the intermediate relay 4 can be expanded;

a circuit bearing plate 5 is fixedly arranged on the left side below the front surface of the element bearing plate 2, a switching transformer 6 is fixedly arranged on the right side above the front surface of the circuit bearing plate 5, and switching bridge pipes 7 are fixedly arranged on the left side and the right side above the front surface of the circuit bearing plate 5; the middle part of the right side of the front surface of the circuit bearing plate 5 is fixedly provided with a filter capacitor 8, and the upper part of the right side of the front surface of the circuit bearing plate 5 is fixedly provided with a rectifier bridge 9; wherein, the piezoresistor body 10 is fixedly arranged below the right side of the front surface of the circuit bearing plate 5, a buzzer 11 capable of providing an alarm sound source is fixedly arranged below the left side of the front surface of the circuit bearing plate 5, and a thyristor 12 is fixedly arranged on the right side of the circuit bearing plate 5; as shown in fig. 2, the normal operation of the circuit elements in the control cabinet body 1 is ensured by the operation of the switch transformer 6, the switch bridge tube 7, the filter capacitor 8, the rectifier bridge 9 and the piezoresistor body 10 on the top surface of the circuit bearing plate 5.

The upper side and the lower side of the piezoresistor body 10 are respectively provided with a protective frame 13, and the bottom ends of the protective frames 13 on the upper side and the lower side are respectively hinged to the upper side and the lower side of the front surface of the circuit bearing plate 5; the outermost side of the piezoresistor body 10 is encapsulated with a resin encapsulation layer 14, the inside of the piezoresistor body 10 is fixedly provided with a silver electrode layer 15, and the bottom surface of the piezoresistor body 10 is fixedly provided with a tin-plated pin 16; as shown in fig. 3, the resin encapsulating layer 14 outside the varistor body 10 has an insulating effect, and tin plated pins 16 on the left and right sides of the bottom surface of the varistor body 10 are connected to the inside of the circuit carrier 5, and the connection effect is achieved by soldering.

The inside of the symmetrically installed protective frame 13 is provided with abutting arc plates 17 at equal distance, the outer wall of each abutting arc plate 17 and the inner wall of the protective frame 13 are connected with each other through a main limiting spring 18, and each abutting arc plate 17 is attached and connected to the outermost resin encapsulation layer 14 of the piezoresistor body 10; as shown in fig. 3, the protective frames 13 rotatably hinged to the upper and lower sides of the circuit carrier plate 5, so that the abutting arc plates 17 connected to the inside of the protective frames 13 through the main limiting springs 18 are attached to the outer wall of the varistor body 10, thereby preventing the varistor body 10 from tilting and skewing due to direct contact.

The top surface of the protective frame 13 above the circuit bearing plate 5 is fixedly provided with an anti-falling top plate 19, the top surface of the protective frame 13 below the circuit bearing plate 5 is provided with a containing guide groove 20, the left side and the right side of the top surface of the protective frame 13 below are both hinged with a turnover anti-falling rod 21, and the joint of the turnover anti-falling rod 21 on the left side and the right side and the protective frame 13 is provided with a torsion spring 22; as shown in fig. 5, the anti-drop top plate 19 is attached to the bottom surface of the accommodating groove 20, and then is reset by the torsion spring 22 inside the turnover anti-drop rod 21, so as to prevent the anti-drop top plate 19 from being separated, and protect the inside varistor body 10.

The center of the top surface of the lower protective frame 13 is rotatably provided with a driving gear 23, driven racks 24 are slidably arranged on the left side and the right side of the top surface of the lower protective frame 13, the driven racks 24 on the left side and the right side are meshed with the outer wall of the driving gear 23, and the outer wall of the driven racks 24 on the left side and the right side are connected with the turnover anti-drop rods 21 on the left side and the right side through pull ropes 25; as shown in fig. 4-6, the driving gear 23 rotatably installed in the accommodating guide groove 20 drives the driven rack 24 to move, so that the driven rack 24 drives the connected turnover type anti-falling rod 21 to turn over through the pull rope 25, and the anti-falling top plate 19 is attached to the bottom surface of the accommodating guide groove 20.

Working principle: before the electrical control cabinet with the piezoresistor protection structure is used, the whole condition of the device needs to be checked firstly to confirm that normal operation can be carried out, according to the operation of the switch transformer 6, the switch bridge tube 7, the filter capacitor 8, the rectifier bridge 9 and the piezoresistor body 10 on the top surface of the circuit bearing plate 5, the circuit breaker body 3, the intermediate relay 4 and the circuit bearing plate 5 are firstly installed by the control cabinet body 1, an asynchronous motor is not frequently started by the circuit breaker body 3, a power line, the motor and the like are protected, meanwhile, when the contact logarithm of other electrical appliances is insufficient by the intermediate relay 4 in use, the contact logarithm of the intermediate relay 4 can be expanded, and then the normal operation of circuit elements in the control cabinet body 1 is ensured by the operation of the switch transformer 6, the switch bridge tube 7, the filter capacitor 8, the rectifier bridge 9 and the piezoresistor body 10 on the top surface of the circuit bearing plate 5;

tin plated pins 16 on the left side and the right side of the bottom surface of the piezoresistor body 10 are connected to the inside of the circuit bearing plate 5, the connection effect is achieved through soldering tin, and then the tin plated pins are rotatably hinged to protective frames 13 on the upper side and the lower side of the circuit bearing plate 5, so that abutting arc plates 17 connected to the inside of the protective frames 13 through main limiting springs 18 are attached to the outer wall of the piezoresistor body 10, and further the piezoresistor body 10 is prevented from tilting and skewing due to direct contact;

the anticreep roof 19 of protection frame 13 top surface runs through in the inside of holding guide slot 20 of below, simultaneously rotatory installation is in holding the inside driving gear 23 of guide slot 20 and drive driven rack 24 and remove, and then make driven rack 24 pass through stay cord 25 with the upset of upset formula anticreep pole 21 drive that connects, and then make the laminating of anticreep roof 19 connect in the bottom surface that holds guide slot 20, and then through the inside torsion spring 22 of upset formula anticreep pole 21 reset, prevent that anticreep roof 19 from taking place to break away from for protect inside piezoresistor body 10.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. An electrical control cabinet with a piezoresistor protection structure comprises a control cabinet body (1) and an element bearing plate (2) fixedly arranged on the front surface inside the control cabinet body (1);

a circuit breaker body (3) for cutting off a circuit is fixedly arranged above the front surface of the element bearing plate (2) at equal distance, and an intermediate relay (4) for amplifying an output signal is fixedly arranged in the middle of the front surface of the element bearing plate (2);

characterized by further comprising:

a circuit bearing plate (5) is fixedly arranged on the left side below the front of the element bearing plate (2), a switch transformer (6) is fixedly arranged on the right side above the front of the circuit bearing plate (5), and switch bridge pipes (7) are fixedly arranged on the left side and the right side above the front of the circuit bearing plate (5);

the middle part of the right side of the front surface of the circuit bearing plate (5) is fixedly provided with a filter capacitor (8), and the upper part of the right side of the front surface of the circuit bearing plate (5) is fixedly provided with a rectifier bridge (9);

the circuit bearing plate (5) is characterized in that a piezoresistor body (10) is fixedly arranged below the right side of the front face of the circuit bearing plate (5), a buzzer (11) capable of providing an alarm sound source is fixedly arranged below the left side of the front face of the circuit bearing plate (5), and a thyristor (12) is fixedly arranged on the right side of the circuit bearing plate (5).

2. An electrical control cabinet with a varistor protection structure as in claim 1, wherein: the circuit breaker is characterized in that the front breaker body (3), the intermediate relay (4) and the circuit bearing plate (5) of the element bearing plate (2) are all arranged in a front forward state, and the element bearing plate (2) and the control cabinet body (1) are vertically and coaxially distributed.

3. An electrical control cabinet with a varistor protection structure as in claim 2, wherein: the upper and lower sides of piezo-resistor body (10) are all installed protection frame (13), and the bottom of upper and lower both sides protection frame (13) is articulated respectively and is connected in the front upper and lower both sides of circuit carrier plate (5).

4. An electrical control cabinet with a varistor protection structure as in claim 1, wherein: the outermost side of the piezoresistor body (10) is encapsulated with a resin encapsulation layer (14), a silver electrode layer (15) is fixedly arranged in the piezoresistor body (10), and tin-plated pins (16) are fixedly arranged on the bottom surface of the piezoresistor body (10).

5. An electrical control cabinet with a varistor protection structure as in claim 3, wherein: the inside equidistance of protection frame (13) of symmetry installation is installed and is contradicted arc board (17), and is set up through main spacing spring (18) interconnect between the outer wall of every conflict arc board (17) and the inner wall of protection frame (13), and every conflict arc board (17) all laminating is connected in resin encapsulation layer (14) in the piezo-resistor body (10) outside.

6. An electrical control cabinet with a varistor protection structure as in claim 1, wherein: the top surface fixed mounting of circuit carrier board (5) top protection frame (13) has anticreep roof (19), and the top surface of circuit carrier board (5) below protection frame (13) has been seted up and has been held guide slot (20) to the top surface left and right sides of below protection frame (13) all articulates and is connected with convertible anticreep pole (21), and the junction of convertible anticreep pole (21) and protection frame (13) of left and right sides is provided with torsion spring (22).

7. An electrical control cabinet with a varistor protection structure as in claim 6, wherein: the center of the top surface of the protective frame (13) arranged below is provided with a driving gear (23) in a rotating mode, driven racks (24) are slidably arranged on the left side and the right side of the top surface of the protective frame (13) below, the driven racks (24) on the left side and the right side are connected to the outer wall of the driving gear (23) in a meshed mode, and the outer wall of the driven racks (24) on the left side and the outer wall of the turnover anti-falling rod (21) on the right side are connected with each other through pull ropes (25).