An easy-to-assemble residual current circuit breaker

Abstract

This utility model belongs to the field of residual current circuit breakers (RCCBs), specifically a residual current circuit breaker that is easy to assemble. It includes a right housing assembly, a left housing assembly, a first locking block, and a mounting assembly. The right housing assembly has an outwardly protruding block on one side, and two first mounting grooves are formed on one side plate. The left housing assembly includes a groove, and two second mounting grooves are formed on one side plate. The bottom of the first locking block is snapped into place with the second locking block. The mounting assembly includes a mounting square tube, a connecting rod, a fixing plate, and bolts, etc. A mounting cavity is formed between the right and left housing assemblies for mounting the residual current circuit breaker body. This utility model achieves rapid positioning and locking of the housing through the insertion and locking mechanism of the protrusion and groove, solving the problems of cumbersome assembly steps and low efficiency. The adjustable mounting assembly adapts to different installation scenarios, reduces the requirements for the accuracy of the mounting hole positions, and improves adaptability.

Description

Technical Field

[0001] This utility model relates to the field of residual current circuit breakers, specifically a residual current circuit breaker that is easy to assemble. Background Technology

[0002] A residual current device (RCD), also known as a residual current circuit breaker, is mainly used to protect equipment from leakage faults and to protect people from fatal electric shocks. It has overload and short circuit protection functions and can be used to protect circuits or motors from overload and short circuits. It can also be used for infrequent switching and starting of circuits under normal conditions. An RCD includes a housing, terminals, and a main circuit breaker.

[0003] The following problems typically exist during the assembly of existing residual current circuit breakers:

[0004] 1. The assembly of the housing relies heavily on fasteners such as screws for connection, requiring alignment in multiple directions. The assembly process is cumbersome, resulting in low assembly efficiency.

[0005] 2. The installation structure lacks flexibility, making it difficult to adapt to different installation scenarios and surfaces. It also requires high precision in the mounting hole positions and has poor adaptability.

[0006] Therefore, a residual current circuit breaker that is easy to assemble is proposed to address the above problems. Utility Model Content

[0007] To address the problems of existing residual current circuit breakers, such as the reliance on screws and other fasteners for housing assembly, the need for multi-directional alignment leading to cumbersome assembly steps, low efficiency, insufficient installation structure flexibility, difficulty in adapting to different installation scenarios, and high requirements for the accuracy of mounting hole positions, this utility model proposes a residual current circuit breaker that is easy to assemble.

[0008] The technical solution adopted by this utility model to solve its technical problem is: a residual current circuit breaker that is easy to assemble, including a right housing assembly, a left housing assembly, a first locking block, and a mounting assembly.

[0009] The right housing assembly includes a right housing, one side of which protrudes outward to form a protrusion, and two first mounting grooves are formed on one side plate of the right housing.

[0010] The left housing assembly includes a groove, one side of which protrudes outward to form a groove, and two second mounting slots are formed on one side plate of the groove.

[0011] The bottom of the first card block is connected to the second card block via a snap-fit.

[0012] The mounting assembly includes a mounting square tube with through slots extending through both ends. A connecting rod is fixedly connected to one end of the mounting square tube. A fixing plate is inserted into the mounting square tube, and a first bolt is threaded onto the fixing plate. A through opening is provided on the fixing plate, and a second bolt is inserted into the through opening. A bearing is sleeved on the connecting rod.

[0013] A mounting cavity is formed between the right housing assembly and the left housing assembly, and the residual current circuit breaker body is installed in the mounting cavity.

[0014] Preferably, the second locking block is fixedly connected to the top surface of the left housing, and the recessed portion of the second locking block cooperates with the protruding portion of the first locking block.

[0015] Preferably, the protrusion and groove are sized to fit together, and the right housing assembly is fitted to the left housing assembly via the protrusion and groove.

[0016] Preferably, there are four mounting components, with the four bearings correspondingly embedded in two first mounting slots and two second mounting slots.

[0017] Preferably, the four mounting components are rotatably connected to the right and left housings via bearings and connecting rods.

[0018] Preferably, one end of the fixing plate is provided with a threaded groove, and the end of the first bolt is threaded into the threaded groove.

[0019] Preferably, the nut end of the first bolt overlaps the outer surface of the mounting square tube, and the threaded end of the first bolt moves through the through groove.

[0020] The advantages of this utility model are:

[0021] 1. This utility model achieves rapid positioning and locking of the housing by interlocking the protrusion of the right housing component with the groove of the left housing component, and by the snap-fit ​​connection structure of the first and second locking blocks. This solves the problem that the existing technology relies on fasteners such as screws for connection during housing assembly, requires multi-directional alignment, and has complicated assembly steps, thus improving assembly efficiency.

[0022] 2. This utility model, through the structural design of the mounting component, including the mounting square tube, through groove, fixing plate, first bolt, and second bolt, achieves the function of adjustable angle of the mounting component and extension length of the fixing plate. It solves the problems of insufficient flexibility of the existing mounting structure, difficulty in adapting to different installation scenarios and mounting surfaces, and high requirements for the positional accuracy of the mounting holes, thereby improving the adaptability of the installation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the residual current circuit breaker structure of this utility model;

[0025] Figure 2 For the present utility model Figure 1 A magnified view of the structure at point A in the middle;

[0026] Figure 3 For the present utility model Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0027] Figure 4 This is a schematic diagram of the right shell assembly of this utility model;

[0028] Figure 5 This is a schematic diagram of the back of the right shell assembly of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the left shell assembly of this utility model;

[0030] Figure 7 This is a schematic diagram of the back structure of the left shell assembly of this utility model;

[0031] Figure 8 This is a schematic diagram of the installation component of this utility model;

[0032] Figure 9 This is a schematic diagram of the structure connecting the mounting square tube, through groove, and connecting rod of this utility model;

[0033] Figure 10 This is a schematic diagram of the structure of the fixing plate, the through-hole, and the connection between the first bolt and the second bolt of this utility model.

[0034] In the diagram: 1. Right housing assembly; 101. Right housing; 102. Protrusion; 103. First mounting groove; 2. Left housing assembly; 201. Left housing; 202. Groove; 203. Second mounting groove; 3. First locking block; 4. Second locking block; 5. Mounting assembly; 501. Mounting square tube; 502. Through groove; 503. Connecting rod; 504. Fixing plate; 505. First bolt; 506. Through port; 507. Second bolt; 508. Bearing; 6. Residual current circuit breaker body. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0036] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0037] This application discloses a residual current circuit breaker that is easy to assemble. (Refer to...) Figures 1 to 10 An easy-to-assemble residual current circuit breaker, comprising a right housing assembly 1, a left housing assembly 2, a first locking block 3, and a mounting assembly 5.

[0038] The right housing assembly 1 includes a right housing 101, one side of which protrudes outward to form a protrusion 102, and two first mounting grooves 103 are provided on one side plate of the right housing 101.

[0039] The left housing assembly 2 includes a groove 202, one side of which protrudes outward to form the groove 202. Two second mounting slots 203 are provided on one side plate of the groove 202. The protrusion 102 is matched with the groove 202. The right housing assembly 1 is inserted and matched with the left housing assembly 2 through the protrusion 102 and the groove 202.

[0040] The bottom of the first locking block 3 is connected to the second locking block 4. The second locking block 4 is fixedly connected to the top surface of the left housing 201, and the recess of the second locking block 4 cooperates with the protrusion of the first locking block 3.

[0041] like Figure 3 and Figure 6 As shown, the protrusion 102 of the right housing 101 is aligned with the groove 202 of the left housing 201 and pushed in along the insertion direction. The stepped mating surfaces of the protrusion 102 and the groove 202 guide the housing to be precisely aligned. At the same time, the first mounting groove 103 of the right housing 101 corresponds to the second mounting groove 203 of the left housing 201, which quickly completes the initial positioning of the housing and avoids the multi-directional alignment problem of traditional screw connection, thus improving assembly efficiency.

[0042] like Figure 2 As shown, the protrusion at the bottom of the first locking block 3 is embedded in the recess of the second locking block 4. By pressing, the latch structure is engaged, and the second locking block 4 is fixed to the top of the left housing 201. The first locking block 3 can move synchronously with the right housing 101 to form a top locking structure to prevent the housing from separating. Locking can be completed in a single step, saving steps compared to traditional screw fixing.

[0043] The mounting assembly 5 includes a mounting square tube 501, with through grooves 502 extending through both ends of the mounting square tube 501. A connecting rod 503 is fixedly connected to one end of the mounting square tube 501. A fixing plate 504 is inserted into the mounting square tube 501, and a first bolt 505 is threaded onto the fixing plate 504. A through opening 506 is provided on the fixing plate 504, and a second bolt 507 is inserted into the through opening 506. A bearing 508 is sleeved on the connecting rod 503. There are four components 5. The four 508 are correspondingly embedded in the two first mounting slots 103 and the two second mounting slots 203. The four mounting components 5 are rotatably connected to the right housing 101 and the left housing 201 through the 508 and the connecting rod 503. One end of the fixing plate 504 is provided with a threaded groove. The end of the first bolt 505 is threaded into the threaded groove. The nut end of the first bolt 505 overlaps the outer surface of the mounting square tube 501. The threaded end of the first bolt 505 moves through the through slot 502.

[0044] like Figure 4 , Figure 7 As shown, the connecting rods 503 of the four mounting components 5 are embedded in the first mounting groove 103 and the second mounting groove 203 via the sleeves 508, which are presumably bushings or rotating rings, allowing the mounting components 5 to rotate around the connecting rods 503. The through groove 502 of the mounting square tube 501 allows the fixing plate 504 to slide back and forth inside the tube. By tightening the first bolt 505, the nut end abuts against the outer surface of the mounting square tube 501, and the threaded end passes through the through groove 502 to lock the position of the fixing plate 504. The angle of the mounting components 5 and the extension length of the fixing plate 504 can be adjusted according to the position of the external mounting surface to adapt to different installation scenarios. The entire residual current circuit breaker is fixed to the distribution box or wall and other external structures by passing the second bolt 507 through the through-hole 506 of the fixing plate 504.

[0045] like Figure 10 The through-hole 506 is a long strip groove, which allows the bolt to move within a small range, compensates for the position error of the mounting hole, achieves rapid fixing, and reduces the accuracy requirements of the mounting hole position, thus improving adaptability.

[0046] A mounting cavity is formed between the right housing assembly 1 and the left housing assembly 2, and a residual current circuit breaker body 6 is installed in the mounting cavity.

[0047] like Figure 1 As shown, the residual current circuit breaker body 6 is placed in the mounting cavity formed by the docking of the left housing 201 and the right housing 101. The installation process of the body does not require additional fasteners, and the number of assembly parts is reduced by using the housing structure itself for limiting.

[0048] Working principle:

[0049] Housing docking principle: The protrusion 102 of the right housing assembly 1 and the groove 202 of the left housing assembly 2 are engaged to form an initial positioning structure, ensuring that the left and right housings are quickly aligned and reducing the difficulty of alignment during assembly.

[0050] Snap-locking principle: The first snap block 3 and the second snap block 4 achieve top locking through a concave-convex snap-lock structure, eliminating the need for additional screws and simplifying the assembly process.

[0051] Adjustable installation principle: The mounting component 5 allows the fixing plate 504 to move back and forth within the mounting square tube 501 through a rotation connection and bolt adjustment mechanism, and locks its position with the first bolt 505. At the same time, the second bolt 507 passes through the through-hole 506 and can be fixed to the external mounting surface, so as to realize flexible adjustment of the installation position.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A ground fault circuit interrupter that is easy to assemble, comprising: include: The right housing assembly (1) includes a right housing (101), one side of the right housing (101) protrudes outward to form a protrusion (102), and two first mounting grooves (103) are provided on one side plate of the right housing (101). The left housing assembly (2) includes a groove (202), one side of which protrudes outward to form the groove (202), and two second mounting grooves (203) are provided on one side plate of the groove (202). The first card block (3) has a second card block (4) connected to its bottom by a snap fastener; The mounting assembly (5) includes a mounting square tube (501), which has through slots (502) extending through the front and rear of the mounting square tube (501). A connecting rod (503) is fixedly connected to one end of the mounting square tube (501). A fixing plate (504) is inserted into the mounting square tube (501). A first bolt (505) is threaded onto the fixing plate (504). A through opening (506) is opened through the fixing plate (504). A second bolt (507) is inserted into the through opening (506). A bearing (508) is sleeved on the connecting rod (503). An installation cavity is formed between the right housing assembly (1) and the left housing assembly (2), and a residual current circuit breaker body (6) is installed in the installation cavity.

2. An arc fault circuit interrupter according to claim 1, wherein: The second card block (4) is fixedly connected to the top surface of the left housing (201), and the recess of the second card block (4) cooperates with the protrusion of the first card block (3).

3. The easily assembled residual current circuit breaker according to claim 1, characterized in that: The protrusion (102) and the groove (202) are matched in size, and the right housing assembly (1) is connected to the left housing assembly (2) by the protrusion (102) and the groove (202).

4. The easily assembled residual current circuit breaker according to claim 1, characterized in that: There are four mounting components (5), and the four bearings (508) are respectively embedded in two first mounting slots (103) and two second mounting slots (203).

5. A residual current circuit breaker that is easy to assemble according to claim 4, characterized in that: The four mounting components (5) are rotatably connected to the right housing (101) and the left housing (201) via bearings (508) and connecting rods (503).

6. A residual current circuit breaker that is easy to assemble according to claim 1, characterized in that: The fixing plate (504) has a threaded groove at one end, and the end of the first bolt (505) is threaded into the threaded groove.

7. A residual current circuit breaker that is easy to assemble according to claim 1, characterized in that: The nut end of the first bolt (505) overlaps the outer surface of the mounting square tube (501), and the threaded end of the first bolt (505) moves through the through groove (502).

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