Wiring board for residual-current circuit breaker

Abstract

The utility model relates to the related technical field of circuit breakers, in particular to a wiring board used on a residual-current circuit breaker, which comprises a circuit breaker shell, an operating handle is arranged on the inner wall of the circuit breaker shell, one end of the operating handle is connected with an execution handle through a pull rod, one end of the execution handle is connected with a thermal tripping pull rod, and the thermal tripping pull rod is connected with the circuit breaker shell. One end of the thermal tripping pull rod is connected to the inner wall of the circuit breaker shell, and a wiring assembly is arranged on the inner wall of the circuit breaker shell; according to the utility model, the pull block drives the sliding rod to drive the limiting spring to compress, the sliding rod moves upwards to lose the fixation of the wiring convex plate, and when the wiring convex plate is placed in place, only the pull block needs to be loosened, and the compressed limiting spring rebounds, so that the limiting spring reversely applies force to the sliding rod; the sliding rod moves downwards to fix the wiring convex plate; the overall size of the wiring protruding plate is reduced, an extension part is omitted, the coil extends to the position below the wiring protruding plate for spot welding connection, and more cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of circuit breaker, specifically is a kind of wiring board for leakage circuit breaker. BACKGROUND

[0002] The wiring board design of prior art is relatively long in structure, it starts from the side of circuit breaker, passes through and is connected with the mutual inductor of the other side, then further extends to the position of coil, is tightly connected with coil there by spot welding technology, forms a complete circuit system. However, due to its complex structure and more material use, the overall cost is significantly increased;

[0003] And when assembling the leakage circuit breaker of prior art, operator must manually unscrew the screw of fixed contact, so as to place wiring board correctly. Then, it is also needed to reversely rotate screw to firmly fix wiring board. Not only this series of steps operation is complicated, but also it needs to use tool to complete screw tightening, and such process significantly reduces installation efficiency, and increases dependence on professional tool, so that overall practicability is limited.

[0004] Therefore, a wiring board for leakage circuit breaker is needed to improve the above problems. SUMMARY

[0005] In order to solve the problem that wiring board on leakage circuit breaker is wired, the overall length of prior art wiring board is long, it is connected with the mutual inductor of the other side through circuit breaker, and then extended to coil and spot welded with coil, but the wiring board with such structure has high cost, the utility model provides a wiring board for leakage circuit breaker to solve the above problems.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A wiring board for leakage circuit breaker, comprising circuit breaker shell, operating handle is arranged on the inner wall of circuit breaker shell, one end of operating handle is connected with execution handle through pull rod, one end of execution handle is connected with thermal trip pull rod, and one end of thermal trip pull rod is connected on the inner wall of circuit breaker shell, wiring assembly is arranged on the inner wall of circuit breaker shell;

[0008] The wiring assembly comprises an outer shell which is embeddedly installed on the outer wall of the circuit breaker shell, an installation hole is formed on the inner wall of the outer shell, a sliding rod is slidably connected to the inner wall of the installation hole, one end of the sliding rod penetrates through the installation hole and extends into the inner cavity of the outer shell, a limiting spring is installed on one side of the sliding rod and located on the inner wall of the outer shell, one end of the limiting spring is connected to the outer wall of the sliding rod, a sliding hole is formed on the port of the sliding rod, a sliding rod is slidably connected to the inner wall of the sliding hole, a pull block is arranged on one end of the sliding rod, and a limiting block is arranged on the other end of the sliding rod.

[0009] As a preferred scheme of the utility model, one side of the sliding rod and located on the inner wall of the outer shell is provided with a wiring lug plate, the outer wall of the wiring lug plate is provided with a bending groove, one side of the bending groove and located on the outer wall of the wiring lug plate is provided with a connecting plate.

[0010] As a preferred scheme of the utility model, the inner wall of the circuit breaker shell is provided with a static contact, and the inner wall of the circuit breaker shell is provided with an arc extinguishing chamber.

[0011] As a preferred scheme of the utility model, the inner wall of the circuit breaker shell is provided with an electromagnetic release, and the operating handle is located on one side of the electromagnetic release.

[0012] As a preferred scheme of the utility model, the material of the operating handle is plastic material, the outer wall of the operating handle is provided with a protrusion, and the operating handle is located on one side of the operating handle.

[0013] As a preferred scheme of the utility model, the thermal release pull rod is located in the inner cavity of the circuit breaker shell, and the wiring assembly is provided with a plurality of groups and is located on the opposite outer walls of the circuit breaker shell.

[0014] As a preferred scheme of the utility model, the cross section of the outer shell is a frame structure, the cross section of the limiting spring is a tapered structure, and the sliding rod fixes the wiring lug plate.

[0015] As a preferred scheme of the utility model, the outer wall of the wiring lug plate is provided with a plurality of anti-skid grooves and is located on the outer wall of the wiring lug plate.

[0016] Compared with existing technologies, this invention solves the problem of operators having to manually loosen the screws securing the contacts to place the terminal block correctly. This is achieved by incorporating a pull block in the detection and transfer assembly within the terminal block used in residual current circuit breakers. The pull block drives a sliding rod, which in turn compresses a limiting spring. The sliding rod moves upward, losing its hold on the terminal block. Once the terminal block is in place, simply releasing the pull block causes the compressed limiting spring to rebound, applying a reverse force to the sliding rod, which then moves downward to secure the terminal block. This eliminates the need for operators to manually loosen the screws securing the contacts to place the terminal block correctly. Furthermore, the screws must be rotated in the opposite direction to firmly fix the terminal block, a process that is not only cumbersome but also requires tools to tighten the screws.

[0017] This invention features a flat-shaped terminal block for use in residual current circuit breakers. This design reduces space requirements and facilitates transportation. The terminal block is simply bent at the bending groove for normal use. Furthermore, the overall size of the terminal block is reduced, eliminating the extension section. The coil extends to the bottom of the terminal block for spot welding, further saving costs. This addresses the problem of existing terminal blocks being too long, passing through the circuit breaker to connect to the transformer on the other side, and then extending to the coil for spot welding, which results in high costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the wiring assembly structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the outer shell of this utility model;

[0021] Figure 4 This is a schematic diagram of the wiring protrusion structure of this utility model;

[0022] Figure 5 This is an enlarged schematic diagram of structure A of this utility model.

[0023] In the diagram: 1. Circuit breaker housing; 2. Operating handle; 3. Pull rod; 4. Actuating handle; 5. Thermal trip pull rod; 6. Wiring assembly; 601. Housing; 602. Mounting hole; 603. Sliding rod; 604. Limit spring; 605. Sliding hole; 606. Sliding rod; 607. Pull block; 608. Limit block; 609. Wiring protrusion; 610. Bending groove; 611. Connecting plate; 612. Anti-slip groove; 7. Stationary contact; 8. Arc extinguishing chamber; 9. Electromagnetic trip unit; 10. Protrusion. Detailed Implementation

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] Embodiment: Please refer to Figure 1-5 The wiring board for the leakage circuit breaker shown in the drawing, including the circuit breaker housing 1, the inner wall of the circuit breaker housing 1 is provided with the operating handle 2, one end of the operating handle 2 is connected with the execution handle 4 through the pull rod 3, one end of the execution handle 4 is connected with the thermal trip pull rod 5, and one end of the thermal trip pull rod 5 is connected to the inner wall of the circuit breaker housing 1, the inner wall of the circuit breaker housing 1 is provided with the wiring assembly 6;

[0026] In this embodiment, specific reference is made to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the wiring assembly 6 includes a shell 601, the shell 601 is embeddedly installed on the outer wall of the circuit breaker housing 1, the cross section of the shell 601 is a frame structure, the inner wall of the shell 601 is provided with the mounting hole 602, the inner wall of the mounting hole 602 is slidably connected with the sliding rod 603, one end of the sliding rod 603 penetrates through the mounting hole 602 and extends to the inner cavity of the shell 601, the limit spring 604 is installed on one side of the sliding rod 603 and located on the inner wall of the shell 601, the cross section of the limit spring 604 is a tapered structure, and one end of the limit spring 604 is connected to the outer wall of the sliding rod 603, the sliding hole 605 is formed at the port of the sliding rod 603, the sliding hole 605 is slidably connected with the sliding rod 606, the sliding rod 606 is provided with the pull block 607 at one end, the sliding rod 606 is provided with the limit block 608 at the other end, the wiring lug 609 is arranged on one side of the sliding rod 603 and located on the inner wall of the shell 601, the sliding rod 603 is fixed to the wiring lug 609, the outer wall of the wiring lug 609 is provided with the bending groove 610, and the connecting plate 611 is arranged on one side of the bending groove 610 and located on the outer wall of the wiring lug 609.

[0027] The inner wall of the circuit breaker shell 1 is provided with a static contact 7, the inner wall of the circuit breaker shell 1 is provided with an arc extinguishing chamber 8, the inner wall of the circuit breaker shell 1 is provided with an electromagnetic release 9, the execution handle 4 is located on one side of the electromagnetic release 9, the material of the execution handle 4 is plastic material, the outer wall of the execution handle 4 is provided with a protrusion 10, the operating handle 2 is located on one side of the execution handle 4, the thermal release pull rod 5 is located in the inner cavity of the circuit breaker shell 1, the wiring assembly 6 is provided with a plurality of groups and is located on the opposite outer walls of the circuit breaker shell 1, the outer wall of the wiring lug plate 609 is provided with an anti-skid groove 612, and the anti-skid groove 612 is provided with a plurality of groups and is located on the outer wall of the wiring lug plate 609, so that the wiring lug plate 609 is fixed and is not easy to slide and displace.

[0028] The wiring plate on the leakage circuit breaker works through the connection of one end of the limiting spring 604 to the outer wall of the sliding rod 603, the opening of the sliding hole 605 at the port of the sliding rod 603, the sliding connection of the sliding rod 606 to the inner wall of the sliding hole 605, the setting of the pull block 607 at one end of the sliding rod 606, and the setting of the limiting block 608 at the other end of the sliding rod 606, so that only the pull block 607 is pulled to drive the sliding rod 606 to slide and move up on the inner wall of the sliding hole 605, when the sliding rod 606 drives the limiting block 608 to move to the port of the sliding rod 603, the limiting block 608 and the sliding rod 603 cooperate to limit, then the sliding rod 603 is driven by the sliding rod 606 to move up, and the outer shell 601 is embedded and installed on the outer wall of the circuit breaker shell 1, the inner wall of the outer shell 601 is provided with the mounting hole 602, the sliding rod 603 is slidingly connected to the inner wall of the mounting hole 602, one end of the sliding rod 603 penetrates through the mounting hole 602 and extends to the inner cavity of the outer shell 601, the limiting spring 604 is installed on one side of the sliding rod 603 and the inner wall of the outer shell 601, so that the sliding rod 603 drives the limiting spring 604 to be compressed, the sliding rod 603 loses the fixation of the wiring lug plate 609 when it moves up, after the wiring lug plate 609 is placed in place, only the pull block 607 is loosened, the compressed limiting spring 604 rebounds, and the limiting spring 604 applies force to the sliding rod 603 in the opposite direction, the sliding rod 603 moves down to fix the wiring lug plate 609, so that the operator must manually unscrew the screw of the fixed contact to correctly place the wiring plate. Then, the screw needs to be rotated in the opposite direction to firmly fix the wiring plate. Not only is this series of steps complicated, but also tools are needed to tighten the screw.

[0029] One side of the sliding rod 603 and on the inner wall of the shell 601 are provided with a wiring lug plate 609, the outer wall of the wiring lug plate 609 is provided with a bending groove 610, one side of the bending groove 610 and on the outer wall of the wiring lug plate 609 is provided with a connecting plate 611, under the action of the connecting plate 611, the wiring lug plate 609 is in a flat shape after production, occupies less land, is convenient for transportation, and only needs to be bent at the bending groove 610 during use, so that normal use can be realized, meanwhile, the overall volume of the wiring lug plate 609 is reduced, the extension part is cancelled, the coil is extended to below the wiring lug plate 609 for spot welding connection, and more cost is saved, thereby solving the problem that the existing wiring plate is relatively long as a whole, passes through the circuit breaker and is connected with the mutual inductor on the other side, and is further extended to the coil to be spot welded and connected with the coil to be integrated, but the wiring plate with such a structure has high cost.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A terminal block for use on an arc fault circuit interrupter, comprising a circuit breaker housing (1), characterized in that: The inner wall of the circuit breaker shell (1) is provided with an operating handle (2), one end of the operating handle (2) is connected with an execution handle (4) through a pull rod (3), one end of the execution handle (4) is connected with a thermal trip pull rod (5), one end of the thermal trip pull rod (5) is connected on the inner wall of the circuit breaker shell (1), and the inner wall of the circuit breaker shell (1) is provided with a wiring assembly (6). The wiring assembly (6) comprises an outer shell (601) which is embeddedly installed on the outer wall of the circuit breaker shell (1), the inner wall of the outer shell (601) is provided with a mounting hole (602), the inner wall of the mounting hole (602) is slidably connected with a sliding rod (603), one end of the sliding rod (603) penetrates through the mounting hole (602) and extends to the inner cavity of the outer shell (601), the sliding rod (603) is installed on one side of the inner wall of the outer shell (601) and is provided with a limiting spring (604), one end of the limiting spring (604) is connected on the outer wall of the sliding rod (603), a sliding hole (605) is formed on the port of the sliding rod (603), the inner wall of the sliding hole (605) is slidably connected with a sliding rod (606), one end of the sliding rod (606) is provided with a pull block (607), and the other end of the sliding rod (606) is provided with a limiting block (608).

2. A terminal block for use on an arc fault circuit interrupter according to claim 1, wherein: One side of the sliding rod (603) and the inner wall of the outer shell (601) are provided with a wiring lug (609), the outer wall of the wiring lug (609) is provided with a bending groove (610), and one side of the bending groove (610) and the outer wall of the wiring lug (609) are provided with a connecting plate (611).

3. A terminal block for use on an arc fault circuit interrupter according to claim 1, wherein: The inner wall of the circuit breaker shell (1) is installed with a static contact (7), and the inner wall of the circuit breaker shell (1) is provided with an arc extinguishing chamber (8).

4. A terminal block for use on an arc fault circuit interrupter according to claim 1, wherein: The inner wall of the circuit breaker shell (1) is provided with an electromagnetic release (9), and the execution handle (4) is located on one side of the electromagnetic release (9).

5. A terminal block for use on an arc fault circuit interrupter according to claim 1, wherein: The material of the execution handle (4) is plastic material, the outer wall of the execution handle (4) is provided with a convex (10), and the operating handle (2) is located on one side of the execution handle (4).

6. A terminal block for use on an arc fault circuit interrupter according to claim 1, wherein: The thermal trip pull rod (5) is located in the inner cavity of the circuit breaker shell (1), and the wiring assembly (6) is provided with a plurality of groups and is located on the opposite outer walls of the circuit breaker shell (1) respectively.

7. A terminal block for use on an arc fault circuit interrupter according to claim 2, wherein: The cross section of the outer shell (601) is a frame structure, the cross section of the limiting spring (604) is a tapered structure, and the sliding rod (603) fixes the wiring lug (609).

8. A terminal block for use on an arc fault circuit interrupter according to claim 2, wherein: The outer wall of the wiring lug (609) is provided with an anti-skid groove (612), and the anti-skid groove (612) is provided with a plurality of groups and is located on the outer wall of the wiring lug (609) respectively.

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