A molded case circuit breaker leakage module

Abstract

The utility model relates to electrical equipment technical field especially is a kind of moulded case circuit breaker leakage module, including leakage module main part, the back middle part of leakage module main part is equipped with dovetail slide groove, the inside of dovetail slide groove is penetrated and has dovetail slide rail, the front of leakage module main part is provided with dust cover, the inside of dovetail slide groove is provided with the positioning assembly for fixed leakage module main part, the middle part of the inside wall of dovetail slide groove upper and lower two sides is equipped with positioning hole symmetrically, the positioning assembly includes the installation cavity being equipped in the inside of dovetail slide rail, the inside of installation cavity is provided with guide rod, the both sides of guide rod surface are symmetrically provided with sliding block, the side of two the sliding block mutually away is fixedly connected with positioning clamping block, the shape of dovetail slide rail and dovetail slide groove is compatible, it is between the outer wall of dovetail slide rail and the inner wall of dovetail slide groove for sliding connection, the installation and disassembly of leakage module main body are facilitated, and its stability is guaranteed simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, specifically to a leakage current module for a molded case circuit breaker. Background Technology

[0002] A residual current device (RCD) for a molded case circuit breaker is a key functional component used in molded case circuit breakers. A molded case circuit breaker is a common low-voltage power distribution protection device used to disconnect the circuit when overloads, short circuits, or other faults occur, protecting electrical equipment and lines. The RCD is specifically designed to detect leakage current in the circuit. Traditional RCDs are typically fixed to the inner wall of an electrical box with bolts. This installation method requires operators to repeatedly unscrew and tighten these bolts during installation, disassembly, or routine maintenance, a process that is not only tedious and complex but also consumes a significant amount of time and effort. Utility Model Content

[0003] The purpose of this utility model is to provide a residual current module for a molded case circuit breaker to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A residual current circuit breaker (RCCB) module includes an RCCB body, a dovetail groove formed in the center of the back of the RCCB body, a dovetail slide rail extending through the inner side of the dovetail groove, a dust cover provided on the front of the RCCB body, a positioning component for fixing the RCCB body provided inside the dovetail groove, and positioning holes symmetrically formed in the center of the inner walls on the upper and lower sides of the dovetail groove. The positioning component includes a mounting cavity formed inside the dovetail slide rail. A guide rod is provided inside the mounting cavity. Sliding blocks are symmetrically arranged on both sides of the surface of the guide rod. Positioning blocks are fixedly connected to the sides of the two sliding blocks that are far apart from each other.

[0005] Through the above technical solution, the precise fit between the dovetail slide groove and the dovetail slide rail enables the main body of the leakage current module to be slidably connected to the surface of the dovetail slide rail, providing convenient installation and disassembly functions.

[0006] As a preferred embodiment of this utility model, the shape of the dovetail slide rail is adapted to the shape of the dovetail slide groove, the outer wall of the dovetail slide rail and the inner wall of the dovetail slide groove are slidably connected, and both ends of the top of the dust cover are rotatably connected to the outer wall of the leakage current module body through hinges.

[0007] Through the above technical solution, the dust cover can prevent dust from accumulating on the main body of the leakage current module during long-term use, effectively improving the practicality of the molded case circuit breaker leakage current module and further extending the service life of the main body of the leakage current module.

[0008] As a preferred embodiment of this utility model, the two ends of the guide rod are fixedly connected to the inner walls of the two sides of the mounting cavity, the inner walls of the two sliding blocks are slidably connected to the outer wall of the guide rod, the two positioning blocks are respectively set to correspond to the two positioning holes, and the ends of the two positioning blocks away from the sliding blocks are chamfered.

[0009] Through the above technical solution, the positioning block can be firmly locked inside the two pre-set positioning holes to prevent displacement and ensure the stability of the leakage current module body.

[0010] As a preferred embodiment of this utility model, a return spring is sleeved on the surface of the guide rod. The return spring is disposed between two sliding blocks. Each of the two sliding blocks has a matching circular groove on the side near the return spring. The two ends of the return spring are connected to the opposite side of the two sliding blocks through the circular groove.

[0011] As a preferred embodiment of this utility model, one end of each of the two sliding blocks is rotatably connected to a rotating pull rod via a bearing seat. An insulating pull rod passes through the side of the mounting cavity away from the guide rod. The insulating pull rod is made of epoxy resin, and a connecting block is fixedly connected to one end of the insulating pull rod extending into the mounting cavity.

[0012] As a preferred embodiment of this utility model, the surface of the connecting block is rotatably connected to the ends of the two rotating pull rods away from the sliding block, and the surface of the insulating pull rod is slidably connected to the inner wall of the dovetail slide rail.

[0013] As a preferred embodiment of this utility model, a telescopic spring is sleeved on the outer wall of the insulating pull rod, one end of the telescopic spring is connected to the surface of the connecting block, and the other end of the telescopic spring is connected to the inner wall of the mounting cavity.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, through the precise fit between the dovetail groove and the dovetail slide rail, the main body of the leakage current module can be slidably connected to the surface of the dovetail slide rail. The positioning block extending from the inside of the mounting cavity to the outside of the dovetail slide rail can be firmly locked into the inside of the two pre-set positioning holes to prevent displacement. This connection method not only ensures the stability of the module, but also provides convenient installation and disassembly functions.

[0015] 2. In this utility model, the dust cover is connected to the main body of the leakage current module by a hinge, which can prevent dust from accumulating on the main body of the leakage current module during long-term use, effectively improving the practicality of the leakage current module of the molded case circuit breaker and further extending the service life of the main body of the leakage current module. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the main body of the leakage current module and the dovetail slide rail of this utility model; Figure 3 This is a schematic diagram of the back structure of the main body of the leakage current module of this utility model; Figure 4 This is a schematic diagram of the dovetail slide rail of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the dovetail slide rail of this utility model.

[0017] In the diagram: 1. Leakage module body; 2. Dovetail slide rail; 3. Dovetail slide groove; 4. Positioning component; 5. Positioning hole; 6. Dust cover; 7. Hinge; 401. Mounting cavity; 402. Guide rod; 403. Sliding block; 404. Positioning block; 405. Return spring; 406. Rotating pull rod; 407. Insulating pull rod; 408. Telescopic spring; 409. Connecting block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0020] For examples, please refer to Figure 1-5 This utility model provides a technical solution: A residual current circuit breaker (RCCB) module includes an RCCB body 1. A dovetail groove 3 is provided in the middle of the back of the RCCB body 1. A dovetail slide rail 2 passes through the inner side of the dovetail groove 3. A dust cover 6 is provided on the front of the RCCB body 1. A positioning component 4 for fixing the RCCB body 1 is provided inside the dovetail groove 3. Positioning holes 5 are symmetrically provided in the middle of the inner walls on the upper and lower sides of the dovetail groove 3. The positioning component 4 includes an installation cavity 401 opened inside the dovetail slide rail 2. A guide rod 402 is provided inside the installation cavity 401. Sliding blocks 403 are symmetrically arranged on both sides of the surface of the guide rod 402. A positioning clip 404 is fixedly connected to the side of the two sliding blocks 403 that are far apart from each other.

[0021] The dovetail slide rail 2 and the dovetail slide groove 3 are shaped to match each other. The outer wall of the dovetail slide rail 2 and the inner wall of the dovetail slide groove 3 are slidably connected. Both ends of the top of the dust cover 6 are rotatably connected to the outer wall of the leakage current module body 1 through hinges 7, which can prevent dust from accumulating in the leakage current module body 1 during long-term use. The two ends of the guide rod 402 are fixedly connected to the inner walls of the two sides of the mounting cavity 401. The inner walls of the two sliding blocks 403 are slidably connected to the outer wall of the guide rod 402. The two positioning blocks 404 are respectively set to correspond to the two positioning holes 5. The ends of the two positioning blocks 404 away from the sliding blocks 403 are chamfered. A return spring 405 is sleeved on the surface of the guide rod 402. The return spring 405 is set between the two sliding blocks 403. The side of the two sliding blocks 403 near the return spring 405 is provided with a corresponding spring. The two ends of the return spring 405 are connected to the opposite side of the two sliding blocks 403 through the circular slots. One end of each of the two sliding blocks 403 is rotatably connected to a rotating pull rod 406 through a shaft seat. An insulating pull rod 407 passes through the side of the mounting cavity 401 away from the guide rod 402. The insulating pull rod 407 is made of epoxy resin. A connecting block 409 is fixedly connected to one end of the insulating pull rod 407 that extends into the mounting cavity 401. The surface of the connecting block 409 is rotatably connected to the end of the two rotating pull rods 406 away from the sliding blocks 403. The surface of the insulating pull rod 407 is slidably connected to the inner wall of the dovetail slide rail 2. A telescopic spring 408 is sleeved on the outer wall of the insulating pull rod 407. One end of the telescopic spring 408 is connected to the surface of the connecting block 409, and the other end of the telescopic spring 408 is connected to the inner wall of the mounting cavity 401.

[0022] Through the precise fit between the dovetail groove 3 and the dovetail rail 2, the main body 1 of the leakage current module can be slidably connected to the surface of the dovetail rail. The two positioning blocks 404 are respectively inserted into the interior of the two positioning holes 5. The insulating pull rod 407 drives the connecting block 409 to move. The connecting block 409 drives the two sliding blocks 403 to slide along the guide rod 402 into the interior of the mounting cavity 401 through the two rotating pull rods 406. The two sliding blocks 403 drive the two positioning blocks 404 to disengage from the positioning holes 5 to prevent them from shifting. This connection method not only ensures the stability of the module, but also provides convenient installation and disassembly functions.

[0023] The working process of this utility model is as follows: During use, the main body 1 of the leakage current module is slid into the dovetail slide rail 2 from the end away from the insulating pull rod 407 via the design of the dovetail slide groove 3. Moving along the guide path of the dovetail slide rail 2, the main body 1 of the leakage current module is pressed against the positioning blocks 404. The two positioning blocks 404 then use the sliding block 403 to press against the return spring 405. The return spring 405 contracts under pressure, and the two positioning blocks 404 slide along the guide rod 402 into the installation cavity 401 until the main body 1 of the leakage current module is completely slid into the designated position. At this point, the two positioning blocks 404 correspond to the two positioning holes 5. Under the reaction force of the return spring 405, the two positioning blocks 404 respectively engage with the two positioning holes 5, completing the installation of the main body 1 of the leakage current module. When it is necessary to disassemble the main body of the leakage current module... At time 1, pull the insulating rod 407 outward. The insulating rod 407 drives the connecting block 409 to move. The connecting block 409 drives the two sliding blocks 403 to slide along the guide rod 402 into the mounting cavity 401 through the two rotating rods 406. The two sliding blocks 403 drive the two positioning blocks 404 to disengage from the positioning hole 5. At this time, the leakage current module body 1 can be slid out from the surface of the dovetail slide rail 2 to complete the disassembly of the leakage current module body 1. This not only ensures the stability of the leakage current module body 1, but also provides convenient installation and disassembly functions. The dust cover 6 is rotatably connected to the outer wall of the leakage current module body 1 by the hinge 7, which can prevent the leakage current module body 1 from accumulating dust during long-term use. When the leakage current module body 1 needs to be maintained or repaired, the operator can easily open the dust cover 6.

[0024] The main body 1 of the leakage current module in this utility model is a known existing electrical device. Its structure, circuit and control principle are all known existing technologies. Therefore, the structure, circuit and control principle of the main body 1 of the leakage current module are not described in detail here.

[0025] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A residual current module for a molded case circuit breaker, comprising a residual current module body (1), characterized in that: The back of the main body (1) of the leakage current module is provided with a dovetail groove (3), and a dovetail slide rail (2) runs through the inner side of the dovetail groove (3). A dust cover (6) is provided on the front of the main body (1) of the leakage current module. A positioning component (4) for fixing the main body (1) of the leakage current module is provided inside the dovetail groove (3). Positioning holes (5) are symmetrically provided in the middle of the inner walls on the upper and lower sides of the dovetail groove (3). The positioning component (4) includes an installation cavity (401) inside the dovetail slide rail (2). A guide rod (402) is provided inside the installation cavity (401). Sliding blocks (403) are symmetrically arranged on both sides of the surface of the guide rod (402). A positioning block (404) is fixedly connected to the side of each sliding block (403) that is far away from each other.

2. The residual current module for a molded case circuit breaker according to claim 1, characterized in that: The shape of the dovetail slide rail (2) is adapted to the shape of the dovetail slide groove (3). The outer wall of the dovetail slide rail (2) and the inner wall of the dovetail slide groove (3) are slidably connected. Both ends of the top of the dust cover (6) are rotatably connected to the outer wall of the leakage module body (1) through hinges (7).

3. The residual current module for a molded case circuit breaker according to claim 1, characterized in that: The two ends of the guide rod (402) are fixedly connected to the inner walls of the two sides of the mounting cavity (401), and the inner walls of the two sliding blocks (403) are slidably connected to the outer wall of the guide rod (402). The two positioning blocks (404) are respectively set to correspond to the two positioning holes (5). The end of the two positioning blocks (404) away from the sliding block (403) is chamfered.

4. The residual current module for a molded case circuit breaker according to claim 1, characterized in that: A return spring (405) is sleeved on the surface of the guide rod (402). The return spring (405) is disposed between two sliding blocks (403). Each of the two sliding blocks (403) has a circular slot that matches the return spring (405) on its side. The two ends of the return spring (405) are connected to the opposite side of the two sliding blocks (403) through the circular slot.

5. A residual current module for a molded case circuit breaker according to claim 1, characterized in that: One end of each of the two sliding blocks (403) is rotatably connected to a rotating pull rod (406) via a shaft seat. An insulating pull rod (407) passes through the side of the mounting cavity (401) away from the guide rod (402). The insulating pull rod (407) is made of epoxy resin. A connecting block (409) is fixedly connected to one end of the insulating pull rod (407) extending into the mounting cavity (401).

6. A residual current module for a molded case circuit breaker according to claim 5, characterized in that: The surface of the connecting block (409) is rotatably connected to one end of the two rotating pull rods (406) away from the sliding block (403), and the surface of the insulating pull rod (407) is slidably connected to the inner wall of the dovetail slide rail (2).

7. A residual current module for a molded case circuit breaker according to claim 6, characterized in that: The outer wall of the insulating pull rod (407) is fitted with a telescopic spring (408), one end of which is connected to the surface of the connecting block (409), and the other end of which is connected to the inner wall of the mounting cavity (401).

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