An electric leakage protection switch convenient to assemble

Abstract

This utility model relates to the field of leakage current protection switch application technology, specifically to a leakage current protection switch that is easy to assemble, including a front cover, a middle cover, and a base. The base contains a leakage current protection module and a wiring module. The leakage current protection module includes a control circuit board, a trip coil, and a magnetic ring. A circuit board mounting frame is provided at the lower part of the control circuit board, and limit protrusions are provided on both horizontal sides of the circuit board mounting frame for locking and fixing the limit control circuit board. The trip coil is located below the middle of the circuit board mounting frame, and a coil fixing bracket is provided below the trip coil. The wiring module includes an inlet terminal and an outlet terminal. The inlet terminals are respectively provided on both horizontal sides above the base, and the outlet terminals are respectively located on the left and right horizontal sides of the trip coil. An actuating switch is also provided in the middle of the base for executing the opening and closing of the entire leakage current protection switch.

Description

Technical Field

[0001] This utility model relates to the field of application technology of leakage current protection switches, and specifically to a leakage current protection switch that is easy to assemble. Background Technology

[0002] A residual current circuit breaker (RCCB) is an electrical protection device used to prevent personal injury or fire caused by electrical leakage. It monitors the leakage current in the operating circuit and quickly cuts off the circuit when leakage current is detected, thereby protecting personal and property safety. It is widely used in household or industrial and commercial power systems and is a very important safety device.

[0003] Currently, conventional residual current circuit breakers (RCCBs) have complex internal switch structures and occupy a relatively large internal volume. The assembly and connection of the residual current protection module, in particular, is cumbersome, impacting production efficiency. Furthermore, conventional RCCBs require panel disassembly and removal of internal screws for wiring incoming and outgoing lines, resulting in tedious wiring operations and low assembly efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a leakage current protection switch that is easy to assemble, so as to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is as follows: a leakage current protection switch that is easy to assemble, characterized in that it includes a front cover, a middle cover, and a base. The base is equipped with a leakage current protection module and a wiring module. The leakage current protection module includes a control circuit board, a trip coil, and a magnetic ring. A circuit board mounting frame is provided at the lower part of the control circuit board. Limit protrusions are provided on both horizontal sides of the circuit board mounting frame for locking and fixing the limit control circuit board. The trip coil is located below the middle of the circuit board mounting frame. A coil fixing bracket is provided below the trip coil. The wiring module includes an inlet terminal and an outlet terminal. The inlet terminal is located on both horizontal sides above the base, and the outlet terminal is located on the left and right horizontal sides of the trip coil. An actuating switch is also provided in the middle of the base for performing the opening and closing of the entire leakage current protection switch.

[0006] Preferably, mounting frame support columns are provided on the left and right sides of the circuit board mounting frame, and mounting frame fixing grooves are provided on the outer side of each outgoing terminal. The mounting frame support columns are inserted into the mounting frame fixing grooves, which facilitates the quick insertion and fixing of the circuit board mounting frame onto the base.

[0007] Preferably, the coil fixing bracket is provided with a first bracket fixing post and a second bracket fixing post, and the upper part of the second bracket fixing post is provided with an arc-shaped slot to facilitate the installation and removal of the trip coil.

[0008] Preferably, the inner side of the face cover is provided with a fixing protrusion and a connecting groove on both sides in the horizontal direction, and the outer side of the middle cover is provided with a middle cover fastening groove and a middle cover fastening protrusion on both sides in the horizontal direction. The fixing protrusion is fastened and inserted into the middle cover fastening groove, and the connecting groove is aligned and inserted into the middle cover fastening protrusion, so that the face cover and the middle cover can be combined and fixed by simply fastening and snapping together.

[0009] Preferably, the base 3 has base mounting columns on its horizontal outer sides, and the middle cover has middle cover connecting columns on its horizontal upper and lower sides. The middle cover and the base are connected by corresponding insertion through the base mounting columns and the middle cover connecting columns, and are fastened together with bolts.

[0010] Preferably, a spare wiring slot is provided at the center of the lower part of the middle cover. The overall outer contour of the spare wiring slot is rectangular, which meets the requirements of the leakage protection switch for installation in the open wiring, and does not require additional disassembly of the front cover and the middle cover for cable connection.

[0011] Preferably, the incoming terminal is provided with an incoming terminal limiting cavity near the inside of the middle cover. The incoming terminal limiting cavity is used to constrain and limit the incoming terminal during the wiring process to prevent the incoming terminal from twisting relative to itself.

[0012] Preferably, the base is provided with a wiring adjustment cavity at the position where it connects to the inlet terminal and the outlet terminal. The wiring adjustment cavity is generally annular and hollow in the middle, which facilitates the use of external tools to tighten the fixing bolts placed inside the wiring adjustment cavity, while preventing the fixing bolts from coming loose.

[0013] Preferably, the lower part of the action switch is provided with a switch support frame, and the bottom center of the switch support frame is provided with a support frame fixing hole. The switch support frame is fixedly connected to the base by screws through the support frame fixing hole. The upper part of the switch support frame is provided with a connecting shaft, and the connecting shaft is connected through to the center of the lower part of the action switch.

[0014] Preferably, the base is integrally molded using a one-piece injection molding process, which provides good insulation and durability.

[0015] Compared with the prior art, the present invention provides a leakage current protection switch that is easy to assemble and has at least one of the following advantages:

[0016] 1. In the production and assembly process, a circuit board mounting frame is set inside the residual current circuit breaker, which allows the circuit board to be pre-installed independently. At the same time, it is layered with the trip coil and the outgoing terminals, making the assembly sequence of the upper and lower modules clear and easy to understand. This greatly reduces the assembly interference of adjacent components and reduces the lateral space occupied, so that the lateral size of the entire residual current circuit breaker can be reduced, improving the product's adaptability.

[0017] 2. In the wiring connection process, both the incoming and outgoing terminals are located on the outside, eliminating the need to disassemble the middle cover. The front cover allows for quick wiring operations, improving the actual efficiency of wiring. In addition, a spare wiring slot is provided under the middle cover to meet the construction needs of concealed and exposed wiring, enhancing the product's application competitiveness. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is an overall illustration of an embodiment of the present utility model.

[0020] Figure 2 This is an exploded view of an embodiment of the present utility model.

[0021] Figure 3 for Figure 2 Side view, 3D exploded view.

[0022] Figure 4 This is a side-view 3D view of the entire component.

[0023] Figure 5 for Figure 1 A side-view 3D display diagram.

[0024] Figure 6 This is an exploded perspective view of the overall components of an embodiment of this utility model.

[0025] Figure 7 This is a diagram showing the configuration of the switch support frame and the trip coil.

[0026] Reference numerals: 1-Face cover; 101-Switch through hole; 102-Test button through hole; 103-Fixing protrusion; 104-Connecting groove; 2-Middle cover; 201-Middle cover snap-fit ​​groove; 202-Middle cover snap-fit ​​protrusion; 203-Middle cover connecting post; 204-Spare wiring slot; 205-Inlet limiting cavity; 3-Base; 301-Mounting frame fixing groove; 302-Base mounting post; 303-Wiring adjustment cavity; 4-Leakage protection module; 401-Control circuit board; 4011-Circuit board mounting frame; 4012-Limiting protrusion; 4013-Mounting frame support post; 402-Trigger coil; 4021-Coil fixing bracket; 4022-First bracket fixing post; 4023 - Second bracket fixing post; 403 - Magnetic ring; 5 - Wiring module; 501 - Inlet terminal; 502 - Outlet terminal; 6 - Action switch; 601 - Switch support frame; 6011 - Support frame fixing hole; 6012 - Connecting shaft; Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0028] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] like Figures 1 to 7As shown, the device includes a front cover 1, a middle cover 2, and a base 3. The base 3 houses a leakage current protection module 4 and a wiring module 5. The leakage current protection module 4 includes a control circuit board 401, a trip coil 402, and a magnetic ring 403. A circuit board mounting frame 4011 is located at the lower part of the control circuit board 401. Limiting protrusions 4012 are provided on both horizontal sides of the circuit board mounting frame 4011 for securing and fixing the limiting control circuit board 401. The trip coil 402 is located below the center of the circuit board mounting frame 4011. A coil fixing bracket 4021 is located below the trip coil 402. The wiring module 5 includes an inlet terminal 501 and an outlet terminal 502. The inlet terminal 501 is located on both horizontal sides above the base 3, and the outlet terminal 502 is located on the left and right horizontal sides of the trip coil 402. An actuating switch 6 is also provided in the middle of the base 3 for opening and closing the entire leakage current protection switch.

[0033] The circuit board mounting frame 4011 has mounting frame support columns 4013 on both the left and right sides. Each of the outgoing terminals 502 has a mounting frame fixing groove 301 on its outer side. The mounting frame support columns 4013 are inserted into the mounting frame fixing grooves 301, facilitating quick insertion and fixing of the circuit board mounting frame 4011 onto the base 3. The coil fixing bracket 4021 has a first bracket fixing column 4022 and a second bracket fixing column 4023. The second bracket fixing column 4023 has an arc-shaped slot on its upper part, facilitating the installation and removal of the tripping coil 402. The inner horizontal sides of the face cover 1 are respectively provided with fixing protrusions 103 and connecting grooves 104. The outer horizontal sides of the middle cover 2 are provided with middle cover snap-fit ​​grooves 201 and middle cover snap-fit ​​protrusions 202. The fixing protrusions 103 and the middle cover snap-fit ​​grooves 201 are snapped together, and the connecting grooves 104 and the middle cover snap-fit ​​protrusions 202 are aligned and snapped together, so that the face cover 1 and the middle cover 2 can be assembled and fixed by simply snapping them together. The outer horizontal sides of the base 3 are respectively provided with base mounting posts 302. The upper and lower horizontal sides of the middle cover 2 are provided with middle cover connecting posts 203. The middle cover 2 and the base 3 are connected by corresponding insertion of the base mounting posts 302 and the middle cover connecting posts 203, and are fastened together with bolts.

[0034] A spare wiring slot 204 is provided at the center of the lower part of the middle cover 2. The spare wiring slot 204 has a rectangular outer contour, which meets the requirements of the leakage protection switch for surface wiring installation, eliminating the need to disassemble the front cover 1 and the middle cover 2 for cable connection. An inlet terminal 501 has an inlet limiting cavity 205 near the inside of the middle cover 2. The inlet limiting cavity 205 is used to constrain and limit the inlet terminal 501 during wiring, preventing relative twisting. A wiring adjustment cavity 303 is provided at the connection points of the base 3 with the inlet terminal 501 and the outlet terminal 502. The wiring adjustment cavity 303 is generally annular with a hollow center, facilitating the tightening of the fixing bolts placed inside the wiring adjustment cavity 303 with external tools, while preventing the fixing bolts from coming loose.

[0035] The lower part of the actuating switch 6 is provided with a switch support frame 601. A support frame fixing hole 6011 is provided at the center of the bottom of the switch support frame 601. The switch support frame 601 is fixedly connected to the base 3 by screws through the support frame fixing hole 6011. A connecting shaft 6012 is provided at the upper part of the switch support frame 601, and the connecting shaft 6012 is connected through to the center of the lower part of the actuating switch 6. The base 3 is integrally molded using a one-piece injection molding process, possessing good insulation and durability.

[0036] Implementation Description: In this embodiment, a leakage current protection switch that is easy to assemble is provided. During the production-end installation and assembly process, the circuit board mounting frame 4011 and the control circuit board 401 can be pre-installed. The mounting frame support column 4013 at the lower part of the circuit board mounting frame 4011 is inserted and fixed to the mounting frame fixing groove 301 on the base 3, forming a receiving area at the lower part of the circuit board mounting frame 4011. This achieves layered spatial arrangement and clear assembly sequence of layered functional components, greatly reducing the assembly interference between adjacent components. This reduces the lateral dimension of the entire leakage current protection switch and improves the overall space utilization efficiency of the device. Additionally, a spare wiring trough 204 is installed in the middle of the lower part of the cover. In practical applications, many scenarios require the installation of residual current devices (RCDs) to be flush with the wall for a smooth appearance. However, in current situations, RCDs and related devices are pre-installed during interior decoration. Connecting a conventional RCD to a single electrical appliance (such as an air conditioner) either requires replacing the RCD or drilling holes in the wall, disrupting the wall's integrity and causing inconvenience. The spare wiring trough cleverly solves these application problems.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A leakage protection switch which is easy to assemble, characterized in that: The device includes a front cover, a middle cover, and a base. The base houses a leakage current protection module and a wiring module. The leakage current protection module includes a control circuit board, a trip coil, and a magnetic ring. A circuit board mounting frame is located at the bottom of the control circuit board, with limit protrusions on both horizontal sides for securing the limit control circuit board. The trip coil is located below the center of the circuit board mounting frame, and a coil fixing bracket is located below the trip coil. The wiring module includes inlet terminals and outlet terminals. The inlet terminals are located on both horizontal sides above the base, and the outlet terminals are located on the left and right horizontal sides of the trip coil. An actuating switch is also located in the center of the base to open and close the entire leakage current protection switch.

2. A leakage protection switch for easy assembly as claimed in claim 1 wherein The circuit board mounting frame is provided with mounting frame support columns on both the left and right sides, and the outer side of each outgoing terminal is provided with a mounting frame fixing groove. The mounting frame support columns are inserted into the mounting frame fixing groove, which facilitates the quick insertion and fixing of the circuit board mounting frame onto the base.

3. The easily assembled residual current circuit breaker as described in claim 1, characterized in that: The coil fixing bracket is provided with a first bracket fixing post and a second bracket fixing post. The upper part of the second bracket fixing post is provided with an arc-shaped slot to facilitate the installation and removal of the trip coil.

4. A leakage current protection switch that is easy to assemble as described in claim 1, characterized in that: The inner side of the face cover is provided with a fixing protrusion and a connecting groove on both sides in the horizontal direction. The outer side of the middle cover is provided with a middle cover fastening groove and a middle cover fastening protrusion on both sides in the horizontal direction. The fixing protrusion is fastened and inserted into the middle cover fastening groove, and the connecting groove is aligned and inserted into the middle cover fastening protrusion, so that the face cover and the middle cover can be combined and fixed by simply fastening and snapping together.

5. A leakage current protection switch that is easy to assemble as described in claim 1, characterized in that: The base has base mounting columns on its horizontal outer sides, and the middle cover has middle cover connecting columns on its horizontal upper and lower sides. The middle cover and the base are connected by corresponding insertion through the base mounting columns and the middle cover connecting columns, and are fastened together with bolts.

6. A leakage current protection switch that is easy to assemble as described in claim 1, characterized in that: A spare wiring slot is provided at the center of the lower part of the middle cover. The overall outer contour of the spare wiring slot is rectangular, which meets the requirements of the leakage protection switch for surface installation without the need to disassemble the front cover and the middle cover for cable connection.

7. A leakage current protection switch that is easy to assemble as described in claim 1, characterized in that: The incoming terminal is provided with an incoming terminal limiting cavity near the inside of the middle cover. The incoming terminal limiting cavity is used to constrain and limit the incoming terminal during the wiring process to prevent the incoming terminal from twisting relative to itself.

8. A leakage current protection switch that is easy to assemble as described in claim 1, characterized in that: The base is provided with a wiring adjustment cavity at the position where it connects to the inlet terminal and the outlet terminal. The wiring adjustment cavity is circular in shape and hollow in the middle, which facilitates the tightening of the fixing bolts placed inside the wiring adjustment cavity by external tools, while preventing the fixing bolts from coming loose.

9. A leakage current protection switch that is easy to assemble as described in claim 1, characterized in that: The lower part of the action switch is provided with a switch support frame, and the bottom center of the switch support frame is provided with a support frame fixing hole. The switch support frame is fixedly connected to the base by screws through the support frame fixing hole. The upper part of the switch support frame is provided with a connecting shaft, which is connected through to the center of the lower part of the action switch.

10. A leakage current protection switch that is easy to assemble as described in claim 1, characterized in that: The base is molded using an integrated injection molding process, which provides good insulation and durability.

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