Electric leakage alarm module and electric leakage protection device

Abstract

The utility model provides an electric leakage alarm module and an electric leakage protection device, and belongs to the technical field of electrical equipment. The utility model provides an electric leakage alarm module which is applied to a circuit breaker and comprises a first shell, a circuit board and a wire. The first shell is provided with a containing cavity, and the first shell is provided with a mounting hole communicated with the containing cavity. The circuit board is arranged in the containing cavity, a wiring part is arranged on the circuit board, and the wiring part is opposite to the mounting hole in position. The wire comprises a first end and a second end which are opposite in position, the first end is connected with a first plug, the second end is connected with a second plug, the first plug penetrates through the mounting hole to be electrically connected with the wiring part, and the second plug is electrically connected with the circuit breaker. The first plug is detachably connected with the wiring part, and the second plug is used for being detachably connected with the circuit breaker. The electric leakage alarm module is detachably connected with the circuit breaker through the pluggable wire, and the installation process of the electric leakage alarm module is simplified when the electric leakage alarm module is installed on the circuit breaker.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a leakage alarm module and a leakage protection device. Background Art

[0002] A circuit breaker's leakage alarm module is a safety device used to detect leakage in electrical systems and quickly sound an alarm when a leakage is detected, protecting personnel and preventing electrical fires. To ensure safe operation, circuit breakers on the market are often equipped with a corresponding leakage alarm module to minimize the occurrence of safety issues.

[0003] In the prior art, the installation process of installing the leakage alarm module on the circuit breaker is cumbersome and lengthy, and the leakage alarm module is easily damaged during transportation of the circuit breaker. Therefore, there is an urgent need for a leakage alarm module and a leakage protection device. Utility Model Content

[0004] The present application provides a leakage alarm module and a leakage protection device to reduce the difficulty of installing the leakage alarm module and the circuit breaker.

[0005] In a first aspect, the present application provides a leakage alarm module for use in a circuit breaker, the leakage alarm module comprising: a first housing, a circuit board, and a wire. The first housing is provided with a housing cavity, the first housing is provided with a mounting hole, and the mounting hole is connected to the housing cavity. The circuit board is disposed in the housing cavity, and the circuit board is provided with a wiring portion, the wiring portion being positioned opposite to the mounting hole. The wire comprises a first end and a second end positioned opposite to each other, the first end being connected to a first plug, the second end being connected to a second plug, the first plug being electrically connected to the wiring portion through the mounting hole, and the second plug being electrically connected to the circuit breaker. The first plug is detachably connected to the wiring portion, and the second plug is configured to be detachably connected to the circuit breaker.

[0006] Through the above solution, the present application places the circuit board within the accommodating cavity and provides a mounting hole in the first housing. The first plug of the wire passes through the mounting hole to electrically connect to the circuit board, and the second plug of the wire is electrically connected to the circuit breaker. This allows for a detachable connection between the leakage alarm module and the circuit breaker, increasing the flexibility of the leakage alarm module installation. When the leakage alarm module needs to be installed on the circuit breaker, the wire only needs to be passed through the first mounting hole provided for the leakage alarm module and then plugged into the wiring portion of the circuit board, simplifying the installation process of the leakage alarm module.

[0007] In addition, dielectric testing is required when the circuit breaker leaves the factory. The detachable leakage alarm module can reduce the damage to the leakage alarm module during the testing process, increase the service life of the leakage alarm module, and reduce the subsequent maintenance cost of the leakage detection device.

[0008] In one possible design, the connection portion is a raised structure provided on the circuit board, and the raised structure is provided with a mounting groove. The first plug is a block-shaped structure. When the wire is connected to the circuit board, the block-shaped structure is inserted into the mounting groove, and the first plug and the connection portion have an interference fit.

[0009] Through the above scheme, the block structure is inserted into the protruding structure with the mounting groove, and the block structure and the protruding structure with the mounting groove form an interference fit. This not only realizes the detachable connection between the first plug and the wiring part, but also makes the plugging and unplugging process of the first plug relatively simple, which can reduce the difficulty of installing and disassembling the leakage alarm module.

[0010] In one possible design, the wiring portion is a raised structure on the circuit board, with a mounting slot and a latch on its outer wall. The first plug is a block-shaped structure with an elastic clip that fits over the latch. When connecting the wire to the circuit board, the block-shaped structure is inserted into the mounting slot, and the elastic clip engages with the latch.

[0011] Through the above solution, when the first plug is connected to the wiring part, the elastic clip is connected to the card block, which can make the connection between the wire and the wiring board more stable, reduce the probability of the wire falling off the circuit board when the leakage protection device is bumped or shaken, increase the reliability of the leakage alarm module, and thus increase the reliability of the leakage protection device.

[0012] In one possible design, the mounting hole is a through-slot provided in the first housing. The inner wall of the first housing is provided with a mounting structure comprising a first mounting channel and a second mounting channel. The second mounting channel communicates with the mounting hole through the first mounting channel. The cross-sectional dimensions of the second mounting channel are larger than those of the wiring portion, and the cross-sectional dimensions of the first mounting channel are larger than those of the second mounting channel. The wiring portion is at least partially located within the second mounting channel, and the clamping block and the elastic buckle are engaged within the second mounting channel.

[0013] Through the above scheme, a mounting structure is provided on the inner wall of the first shell, and the mounting structure is provided in the form of a combination of a first mounting channel and a second mounting channel. This can guide the wires to a certain extent when the wires are connected to the circuit board. Moreover, since the wires are relatively soft, the first mounting channel and the second mounting channel can also limit the wires to a certain extent, thereby reducing the amplitude of the wire shaking at the wiring part, thereby reducing the probability of the wire falling off the wiring part due to excessive wire shaking.

[0014] The second mounting channel has a larger cross-sectional area than the wiring portion. This allows the wiring portion protruding from the circuit board to be placed within the second mounting channel after the circuit board is installed in the cavity, saving space in the cavity. The first mounting channel has a larger cross-sectional area than the second mounting channel, making it easier for the operator to activate the elastic clip to separate the wires from the circuit board, reducing the difficulty of removing the wires from the leakage alarm module.

[0015] In one possible design, the leakage alarm module further includes a wiring structure and a plurality of wiring terminals. The wiring structure is disposed on the outer wall of the first housing. The wiring structure is provided with a plurality of connection slots spaced apart therefrom, each of which extends through the first housing. The plurality of connection slots corresponds one-to-one to the plurality of wiring terminals. The first end of each wiring terminal extends through the corresponding connection slot and into the accommodating cavity, and the second end of each wiring terminal is located outside the first housing.

[0016] With the above solution, a wiring structure is provided on the outer wall of the first housing, providing a mounting area for the wiring terminals. Multiple connection slots are spaced apart on the wiring structure to accommodate the connection of multiple external circuits. The first end of the wiring terminal extends through the connection slot and into the accommodating cavity, while the second end of the wiring terminal is located outside the first housing. After the external circuit is connected to the wiring terminal, the leakage protection module is electrically connected to the outside world, thereby increasing the reliability of the leakage protection module.

[0017] In a possible design, a plurality of connection terminals located in the accommodating cavity are separated by partitions.

[0018] With this solution, the partition divides the interior of the accommodating cavity into multiple relatively independent spaces. When the terminal blocks extend through the connection slots into the accommodating cavity, the multiple terminal blocks within the accommodating cavity are located within the multiple relatively independent spaces. This not only increases the electrical clearance between the multiple terminal blocks within the accommodating cavity, but also increases the creepage distance between the multiple terminal blocks within the accommodating cavity. This reduces the probability of the leakage protection module becoming inoperable due to an internal short circuit, thereby increasing the reliability of the leakage protection module.

[0019] In one possible design, the leakage alarm module also includes an insulating protective cover, which is arranged on the wiring structure and connected to the first shell. There is a wiring gap between the insulating protective cover and the first shell, and the wiring gap is connected to the connecting groove. The wiring gap is used for external conductive parts to pass through.

[0020] Through the above solution, the insulating protective cover provided over the wiring structure effectively insulates and protects the wiring structure, reducing the probability of electric shock from accidental contact by operators and increasing the safety of the leakage protection module. After the insulating protective cover is installed over the wiring structure, the wiring gap between the insulating protective cover and the first housing ensures that the normal operation of the leakage protection module is not affected, while increasing the safety of the leakage protection module.

[0021] In one possible design, the first housing includes a top cover and a base. At least one positioning post is provided on an inner wall of the top cover, the positioning post being disposed toward the base. Positioning holes are provided at locations corresponding to the circuit board and the positioning post. The positioning post passes through the positioning hole, allowing the top cover to position the circuit board.

[0022] Through the above solution, the present application provides positioning posts on the inner wall of the top cover and positioning holes on the circuit board. When the circuit board is installed in the accommodating cavity, the positioning posts pass through the positioning holes. This arrangement not only allows the positioning posts to guide the installation of the circuit board, reducing the difficulty of circuit board installation, but also allows the positioning posts to limit the position of the circuit board, reducing the probability of the leakage protection module being affected by the circuit board shaking due to the unstable position of the circuit board, thereby increasing the reliability of the leakage protection module.

[0023] In a second aspect, the present application provides a leakage protection device, which includes a circuit breaker and the leakage alarm module mentioned in the first aspect. The leakage alarm module is located outside the circuit breaker, and the circuit breaker includes a second housing, and the first housing is connected to the second housing.

[0024] Through the above solution, the leakage alarm module provided by this application is detachably connected to the circuit breaker via pluggable wires. Compared to traditional leakage protection devices, the leakage alarm module provided by this application can simplify the installation process when it is installed on the circuit breaker. Furthermore, the leakage protection device provided by this application can install the leakage alarm module on the circuit breaker after the circuit breaker completes dielectric testing, reducing the probability of damage to the leakage alarm module connected to the circuit breaker during transportation, thereby reducing the use and maintenance costs of the leakage protection device.

[0025] In one possible design, the leakage alarm module further includes a guide block disposed on the outer wall of the first housing. The second housing is provided with a slot corresponding to the position of the guide block. The guide block is provided with a guide groove. When the leakage alarm module is installed in the circuit breaker, the guide block engages with the slot, and the wire is at least partially located within the guide groove.

[0026] Through the above solution, a guide block is provided on the first shell, and a slot matching the guide block is provided on the second shell. In this way, when the leakage alarm module is installed on the circuit breaker, the guide block is located in the slot, and the first shell can abut against the second shell, thereby reducing the installation gap between the first shell and the second shell.

[0027] A guide groove is provided on the guide block. When the leakage alarm module is installed on the circuit breaker, the groove can accommodate some of the wires, providing some protection for the wires. This reduces the likelihood of wire damage caused by compression between the first and second housings after the leakage alarm module is installed on the circuit breaker. Furthermore, the guide groove guides the wires, simplifying the installation process.

[0028] The beneficial effects of the leakage protection device provided in the second aspect can be referred to the beneficial effects brought about by the first aspect and the various possible implementation methods of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of the leakage protection device provided in an embodiment of the present application.

[0030] Figure 2 This is an exploded view of a portion of the structure of the leakage protection device provided in an embodiment of the present application.

[0031] Figure 3 This is an assembly diagram of the leakage alarm module and wires provided in an embodiment of the present application.

[0032] Figure 4 This is a schematic diagram of the structure in which the wire provided in the embodiment of the present application is located in the guide groove.

[0033] Figure 5 A schematic diagram of the structure of the leakage alarm module provided in an embodiment of the present application at one viewing angle.

[0034] Figure 6 A schematic diagram of the structure of the wire provided in an embodiment of the present application.

[0035] Figure 7 A schematic diagram of the structure of the circuit board provided in an embodiment of the present application.

[0036] Figure 8 for Figure 7 Magnified view of section C.

[0037] Figure 9 A schematic structural diagram of the top cover provided in an embodiment of the present application.

[0038] Figure 10A schematic structural diagram of the leakage alarm module provided in an embodiment of the present application from another perspective.

[0039] Figure 11 This is an exploded view of the leakage alarm module provided in an embodiment of the present application.

[0040] Description of reference numerals:

[0041] 100, first housing; 110, mounting hole; 120, mounting structure; 121, first mounting channel; 122, second mounting channel; 130, partition; 140, top cover; 150, base; 160, positioning column; 170, guide block; 171, guide groove;

[0042] 200, circuit board; 210, connection portion; 211, card block; 220, positioning hole;

[0043] 300, wire; 310, first end; 320, second end;

[0044] 400, first plug; 410, elastic buckle;

[0045] 500, second plug;

[0046] 600, wiring structure; 610, connection slot;

[0047] 700, terminal blocks;

[0048] 800, insulation shield; 810, wiring clearance;

[0049] 900, second housing; 910, card slot;

[0050] A. Circuit breaker; B. Leakage alarm module. DETAILED DESCRIPTION

[0051] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0053] The terms "comprises", "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0054] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0055] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0056] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the static contact of a circuit breaker and the circuit breaker of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation to the present application.

[0057] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, "connected" or "connected" in a mechanical structure can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection via a fixing member, such as a screw, bolt, or other fixing member. A physical connection can also be a detachable connection, such as a mutual snap-fit ​​connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. "Connected" or "connected" in a circuit structure can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is interconnected. It can also refer to internal communication between two elements. A signal connection can refer to a signal connection through a circuit or a signal connection through a media medium, such as radio waves. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0059] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0060] Figure 1 This is a schematic diagram of the overall structure of the leakage protection device provided in an embodiment of the present application. Figure 2 This is an exploded view of a portion of the structure of the leakage protection device provided in an embodiment of the present application. Figure 3 This is an installation diagram of the leakage alarm module and wires provided in an embodiment of the present application.

[0061] like Figures 1 to 3 As shown, the present application provides a leakage protection device, which includes a circuit breaker A and a leakage alarm module B. The leakage alarm module B is located outside the circuit breaker A, and the leakage alarm module B includes a first shell 100, and the circuit breaker A includes a second shell 900, and the first shell 100 is connected to the second shell 900.

[0062] The first shell 100 may be a shell of the leakage alarm module B. The first shell 100 and the second shell 900 may be mechanically connected by means of snap-fitting or plug-fitting.

[0063] The leakage alarm module B and the circuit breaker A can be two relatively independent entities. The leakage alarm module B can be electrically connected to the circuit breaker A via a wire 300. One end of the wire 300 can be plugged into the circuit board 200 of the leakage alarm module B, and the other end of the wire 300 can be plugged into the circuit breaker A.

[0064] In summary, the leakage alarm module B provided in the present application is detachably connected to the circuit breaker A via a pluggable wire 300. Compared to conventional leakage protection devices, the leakage alarm module B provided in the present application can simplify the installation process of the leakage alarm module B when it is installed on the circuit breaker A. Furthermore, the leakage protection device provided in the present application allows the leakage alarm module B to be installed on the circuit breaker A after the dielectric test is completed on the circuit breaker A. This reduces the probability of damage to the leakage alarm module B connected to the circuit breaker A during transportation, thereby reducing the operating and maintenance costs of the leakage protection device.

[0065] Figure 4 This is a schematic diagram of the structure in which the wire provided in the embodiment of the present application is located in the guide groove.

[0066] In some embodiments, as Figures 2 to 4 As shown, the leakage alarm module B further includes a guide block 170, which is disposed on the outer wall of the first housing 100. The second housing 900 is provided with a slot 910, which corresponds to the position of the guide block 170. The guide block 170 is provided with a guide groove 171. When the leakage alarm module B is installed in the circuit breaker A, the guide block 170 is engaged with the slot 910, and the wire 300 is at least partially located in the guide groove 171.

[0067] Since the leakage alarm module B needs to be installed on the circuit breaker A, a guide block 170 is provided on the leakage alarm module B, and a slot 910 that matches the guide block 170 is provided on the circuit breaker A.

[0068] The guide block 170 may be a protruding structure provided on the outer wall of the first shell 100 . The guide block 170 may be integrally formed with the first shell 100 , or the guide block 170 and the first shell 100 may be separately formed and then assembled.

[0069] The card slot 910 may be a groove structure provided on the side of the second housing 900 facing the leakage alarm module B. The card slot 910 may be integrally formed with the second housing 900, or may be provided on the second housing 900 by carving or cutting after the second housing 900 is formed.

[0070] The depth of the slot 910 can be the same as the protrusion of the guide block 170 relative to the outer wall of the first housing 100, or slightly greater than the protrusion of the guide block 170 relative to the outer wall of the first housing 100. This allows the leakage alarm module B to abut against the second housing 900 when it is installed on the circuit breaker A, reducing the likelihood of a loose installation between the leakage alarm module B and the circuit breaker A due to a gap between the first and second housings 100, 900.

[0071] When the leakage alarm module B is installed on the circuit breaker A, the guide block 170 is located in the slot 910, and the first shell 100 is in contact with the second shell 900. However, the leakage alarm module B and the circuit breaker A are connected through the wire 300. This may cause the leakage alarm module B to squeeze the wire 300 after being installed on the circuit breaker A, thereby affecting the service life of the wire 300. Therefore, the present application provides a guide groove 171 on the guide block 170 that can accommodate part of the wire 300, so as to make installation space for the wire 300 and thus protect the wire 300.

[0072] Through the above arrangement, a guide block 170 is provided on the first shell 100, and a slot 910 cooperating with the guide block 170 is provided on the second shell 900. Thus, when the leakage alarm module B is installed on the circuit breaker A, the guide block 170 is located in the slot 910, and the first shell 100 can abut against the second shell 900, thereby reducing the installation gap between the first shell 100 and the second shell 900.

[0073] Guide grooves 171 are provided on guide block 170. When leakage alarm module B is installed on circuit breaker A, guide grooves 171 can accommodate a portion of wire 300, providing some protection for wire 300. This reduces the likelihood of damage to wire 300 caused by compression between first housing 100 and second housing 900 after leakage alarm module B is installed on circuit breaker A. Guide grooves 171 also guide the direction of wire 300, simplifying the installation process of leakage alarm module B.

[0074] The following will clearly and completely describe the leakage alarm module B mentioned in the embodiment of the present application in conjunction with the accompanying drawings.

[0075] Figure 5 A schematic diagram of the structure of the leakage alarm module provided in an embodiment of the present application at one viewing angle. Figure 6 A schematic diagram of the structure of the wire provided in an embodiment of the present application.

[0076] like Figure 2 、 Figure 3 、 Figure 5 as well as Figure 6As shown, the present application provides a leakage alarm module B for use with a circuit breaker A. The leakage alarm module B comprises: a first housing 100, a circuit board 200, and a wire 300. The first housing 100 has a receiving cavity, and the first housing 100 has a mounting hole 110, which is in communication with the receiving cavity. The circuit board 200 is disposed within the receiving cavity and has a wiring portion 210 disposed thereon, which is positioned opposite the mounting hole 110. The wire 300 includes a first end 310 and a second end 320, which are positioned opposite each other. The first end 310 is connected to a first plug 400, and the second end 320 is connected to a second plug 500. The first plug 400 passes through the mounting hole 110 and is electrically connected to the wiring portion 210, and the second plug 500 is electrically connected to the circuit breaker A. The first plug 400 is detachably connected to the wiring portion 210, and the second plug 500 is configured to be detachably connected to the circuit breaker A.

[0077] The first housing 100 may include a top cover 140 and a base 150. When the top cover 140 and base 150 are combined, they form an installation space, which is the accommodating cavity. A circuit board 200 is fixedly mounted within the accommodating cavity, and a wiring portion 210 is provided on the circuit board 200. Because the circuit board 200 within the first housing 100 needs to be connected to the circuit breaker A via a wire 300, mounting holes 110 are required in the first housing 100, and the location of the mounting holes 110 must correspond to the location of the wiring portion 210.

[0078] The mounting hole 110 connects the interior and exterior of the first housing 100. The mounting hole 110 can be a circular hole or a square hole. The mounting hole 110 can be integrally formed with the first housing 100, or the mounting hole 110 can be provided in the first housing 100 after the first housing 100 is formed by cutting or slotting.

[0079] The wire 300 can be a soft wire, the first end 310 is connected to the first plug 400, and the second end 320 is connected to the second plug 500. The first plug 400 passes through the mounting hole 110 and is plugged into the wiring portion 210, so that the wire 300 is electrically connected to the circuit board 200. The second plug 500 can be plugged into the circuit breaker A, so that the wire 300 is electrically connected to the circuit breaker A.

[0080] In summary, the present application places the circuit board 200 within the accommodating cavity and provides a mounting hole 110 in the first housing 100. The first plug 400 of the wire 300 passes through the mounting hole 110 to electrically connect to the circuit board 200, and the second plug 500 of the wire 300 is electrically connected to the circuit breaker A. This allows for a detachable connection between the leakage alarm module B and the circuit breaker A, increasing the flexibility of installing the leakage alarm module B. When installing the leakage alarm module B on the circuit breaker A, the wire 300 only needs to be passed through the first mounting hole 110 provided on the leakage alarm module B and then plugged into the wiring portion 210 of the circuit board 200, simplifying the installation process of the leakage alarm module B.

[0081] In addition, dielectric testing is required when circuit breaker A leaves the factory. The detachable leakage alarm module B can reduce the damage to the leakage alarm module B during the testing process, increase the service life of the leakage alarm module B, and reduce the subsequent maintenance cost of the leakage detection device.

[0082] There are many ways to connect the wiring portion 210 and the first plug 400 , two of which will be described in detail below with reference to the accompanying drawings.

[0083] In the first connection method, the connection portion 210 is a raised structure on the circuit board 200, which is provided with a mounting groove. The first plug 400 is a block-shaped structure. When the wire 300 is connected to the circuit board 200, the block-shaped structure is inserted into the mounting groove, and the first plug 400 and the connection portion 210 form an interference fit.

[0084] Circuit board 200 can be a plate-like structure. Because circuit board 200 is relatively thin and first plug 400 needs to be plugged into circuit board 200, a raised structure with a mounting groove is provided on circuit board 200 to allow first plug 400 to be plugged into the mounting groove. It should be noted that the cross-sectional dimensions of the block-like structure should be slightly larger than the cross-sectional dimensions of the mounting groove to ensure an interference fit between first plug 400 and wiring portion 210.

[0085] When the first connection method is selected, the block structure is inserted into the raised structure with the mounting groove, and the block structure and the raised structure with the mounting groove form an interference fit. This not only enables the detachable connection between the first plug 400 and the wiring portion 210, but also simplifies the plugging and unplugging process of the first plug 400, thereby reducing the difficulty of installing and disassembling the leakage alarm module B.

[0086] Figure 7 A schematic diagram of the structure of the circuit board provided in an embodiment of the present application. Figure 8 for Figure 7 Magnified view of section C.

[0087] The second connection method, such as Figure 6 as well as Figure 8 As shown, the connection portion 210 is a raised structure on the circuit board 200, with a mounting slot and a latch 211 on its outer wall. The first plug 400 is a block-shaped structure with an elastic latch 410 that mates with the latch 211. When the wire 300 is connected to the circuit board 200, the block-shaped structure is inserted into the mounting slot, and the elastic latch 410 engages with the latch 211.

[0088] The clamping block 211 can be integrally formed with the protruding structure, or the clamping block 211 and the protruding structure can be formed separately and then assembled. The clamping block 211 can be hemispherical or triangular prism-shaped.

[0089] The elastic clip 410 can be plate-shaped, and the middle part of the elastic clip 410 is rotatably connected to the first plug 400. A hook is provided at the end of the elastic clip 410 close to the card block 211. The hook can hook the card block 211 after the first plug 400 is inserted into the installation groove. A pressing area is provided at the end of the elastic clip 410 away from the card block 211. When the first plug 400 needs to be separated from the wiring part 210, the pressing area at the end of the elastic clip 410 away from the card block 211 is pressed to lift the end of the elastic clip 410 close to the card block 211, thereby separating the hook from the card block 211, and then the first plug 400 can be pulled out of the installation groove.

[0090] When the second connection method is selected, after the first plug 400 is connected to the wiring part 210, the elastic clip 410 is clamped to the clamping block 211, which can make the connection between the wire 300 and the wiring board more stable, reduce the probability of the wire 300 falling off the circuit board 200 when the leakage protection device is bumped or shaken, increase the reliability of the leakage alarm module B, and thus increase the reliability of the leakage protection device.

[0091] Figure 9 A schematic structural diagram of the top cover provided in an embodiment of the present application.

[0092] like Figure 3 as well as Figure 9 As shown, the mounting hole 110 is a through-slot provided on the first housing 100. The inner wall of the first housing 100 is provided with a mounting structure 120. The mounting structure 120 includes a first mounting channel 121 and a second mounting channel 122. The second mounting channel 122 communicates with the mounting hole 110 through the first mounting channel 121. The cross-sectional dimensions of the second mounting channel 122 are larger than those of the wiring portion 210. The cross-sectional dimensions of the first mounting channel 121 are larger than those of the second mounting channel 122. The wiring portion 210 is at least partially located within the second mounting channel 122. The latch block 211 and the elastic latch 410 engage within the second mounting channel.

[0093] The structure of the mounting hole 110 has been described in detail above and will not be repeated here.

[0094] The first installation channel 121 and the second installation channel 122 may both be cylindrical structures, so that the first plug 400 can extend from the outside of the leakage protection module into the accommodating cavity to connect with the wiring portion 210 .

[0095] Since the thickness of the leakage protection module is limited, the installation structure 120 arranged toward the inside of the accommodating cavity needs to occupy a portion of the space of the accommodating cavity. Therefore, when the circuit board 200 is installed in the accommodating cavity, due to the limited space of the accommodating cavity, a portion of the wiring portion 210 is located in the second installation channel 122.

[0096] Because the first mounting channel 121 is connected to the second mounting channel 122, when the elastic clip 410 on the first plug 400 is engaged with the clip on the wiring portion 210, part of the elastic clip 410 is located within the first mounting channel 121. Since the cross-sectional dimensions of the first mounting channel 121 are larger than those of the wiring portion 210, the opening of the first mounting channel 121 facing the outside is larger than the cross-sectional dimensions of the second mounting channel 122. In this case, if it is necessary to move the elastic clip 410 to separate it from the block 211, you can reach into the first mounting channel 121 by hand or with a tool to move the elastic clip 410 to separate it from the block 211, thereby removing the first plug 400 from the wiring portion 210.

[0097] Through the above arrangement, mounting structure 120 is provided on the inner wall of first housing 100. Mounting structure 120 is configured as a combination of a first mounting channel 121 and a second mounting channel 122. This provides guidance for wire 300 when connecting it to circuit board 200. Furthermore, because wire 300 is relatively flexible, first mounting channel 121 and second mounting channel 122 also provide a position limit for wire 300, reducing the potential for wire 300 to wobble at connection portion 210. This reduces the likelihood of wire 300 falling off connection portion 210 due to excessive wire 300 wobble.

[0098] The cross-sectional dimensions of the second mounting channel 122 are larger than those of the wiring portion 210. This allows the portion of the wiring portion 210 protruding from the circuit board 200 to be positioned within the second mounting channel 122 after the circuit board 200 is installed within the housing cavity, thereby saving space in the housing cavity. The cross-sectional dimensions of the first mounting channel 121 are larger than those of the second mounting channel 122, making it easier for the operator to activate the elastic latch 410 to separate the wire 300 from the circuit board 200, thus reducing the difficulty of removing the wire 300 from the leakage alarm module B.

[0099] Figure 10 A schematic structural diagram of the leakage alarm module provided in an embodiment of the present application from another perspective. Figure 11 This is an exploded view of the leakage alarm module provided in an embodiment of the present application.

[0100] like Figures 9 to 11 As shown, the leakage alarm module B further includes a wiring structure 600 and a plurality of wiring terminals 700. The wiring structure 600 is disposed on the outer wall of the first housing 100. The wiring structure 600 is provided with a plurality of connection slots 610 at intervals, and the plurality of connection slots 610 all extend through the first housing 100. The plurality of connection slots 610 correspond one-to-one to the plurality of wiring terminals 700. The first end 310 of each wiring terminal 700 passes through the corresponding connection slot 610 and extends into the accommodating cavity, and the second end 320 of each wiring terminal 700 is located outside the first housing 100.

[0101] Because the leakage alarm module B also needs to be connected to an external circuit, a wiring structure 600 is set on the outer wall of the first shell 100. The wiring structure 600 is divided into a plurality of connection slots 610 passing through the first shell 100, and each connection slot 610 is provided with a connection terminal 700.

[0102] The connection terminal 700 can be L-shaped, with the first end 310 of the connection terminal 700 extending through the corresponding connection slot 610 and into the accommodating cavity. Specifically, the longer end of the connection terminal 700 extends through the corresponding connection slot 610 and into the accommodating cavity. The second end 320 of the connection terminal 700 is located outside the first housing 100. Specifically, the shorter end of the connection terminal 700 is located outside the first housing 100 and abuts against the first housing 100. This allows the connection terminal 700 to be mounted in the connection slot 610, allowing it to hang from the first housing 100 without falling.

[0103] Through the above arrangement, the wiring structure 600 is provided on the outer wall of the first housing 100, providing a mounting area for the terminal block 700. Multiple connection slots 610 are spaced apart on the wiring structure 600 to accommodate the connection needs of multiple external circuits. The first end 310 of the terminal block 700 extends through the connection slot 610 and into the accommodating cavity, while the second end 320 of the terminal block 700 is located outside the first housing 100. After the external circuit is connected to the terminal block 700, the leakage protection module is electrically connected to the outside world, thereby increasing the reliability of the leakage protection module.

[0104] Please continue to refer to Figure 9 as well as Figure 11 As shown, the plurality of connection terminals 700 located in the accommodation cavity are separated by partitions 130 .

[0105] The partition 130 can be in a plate-like structure. The partition 130 can be integrally formed with the first housing 100, or the partition 130 and the first housing 100 can be formed separately and then assembled.

[0106] With the above arrangement, the partition 130 divides the interior of the accommodating cavity into multiple relatively independent spaces. When the terminal 700 passes through the connection slot 610 and extends into the accommodating cavity, the multiple terminals 700 located in the accommodating cavity are in multiple relatively independent spaces. In this way, not only can the electrical clearance between the multiple terminals 700 located in the accommodating cavity be increased, but also the creepage distance between the multiple terminals 700 located in the accommodating cavity can be increased, reducing the probability of the problem that the leakage protection module cannot be used due to an internal short circuit in the leakage protection module, and increasing the reliability of the use of the leakage protection module.

[0107] At present, the safety issue is one of the issues that cannot be ignored in the use of electrical equipment. In order to increase the safety of the leakage protection module during use, some improvements have been made in this application.

[0108] As Figure 10 shown, the leakage alarm module B further includes an insulating protective cover 800. The insulating protective cover 800 covers the wiring structure 600 and is connected to the first housing 100. There is a wiring gap 810 between the insulating protective cover 800 and the first housing 100. The wiring gap 810 communicates with the connection slot 610, and the wiring gap 810 is used for an external conductive member to pass through.

[0109] The insulating protective cover 800 can be in a "U" - shaped structure. The two ends of the insulating protective cover 800 can be snap - connected to the first housing 100, and the middle part of the insulating protective cover 800 covers the wiring structure 600.

[0110] Because the wiring structure 600 is provided for connecting an external line to the terminal 700, when the insulating protective cover 800 covers the wiring structure 600, a wiring gap 810 can be provided between the insulating protective cover 800 and the first housing 100 so that the external line can pass through the wiring gap 810 to connect to the terminal 700 located in the wiring structure 600.

[0111] The insulating protective cover 800 can be made of a transparent insulating material so that an operator can observe the situation inside the wiring structure 600, and thus can conveniently judge whether the external line is effectively connected to the terminal 700.

[0112] Through the above arrangement, the insulating protective cover 800 provided over the wiring structure 600 effectively insulates and protects the wiring structure 600, reducing the probability of electric shock from accidental contact by the operator and increasing the safety of the leakage protection module. After the insulating protective cover 800 is installed over the wiring structure 600, the wiring gap 810 provided between the insulating protective cover 800 and the first housing 100 ensures that the normal operation of the leakage protection module is not affected, while increasing the safety of the leakage protection module.

[0113] like Figure 7 as well as Figure 11 As shown, the first housing 100 includes a top cover 140 and a base 150. At least one positioning post 160 is provided on the inner wall of the top cover 140. The positioning post 160 is disposed toward the base 150. Positioning holes 220 are provided at locations corresponding to the circuit board 200 and the positioning post 160. The positioning post 160 passes through the positioning hole 220, allowing the top cover 140 to position the circuit board 200.

[0114] The positioning post 160 may be a columnar structure disposed in the accommodating cavity, and may be cylindrical or prismatic, etc. The positioning post 160 may be integrally formed with the top cover 140 , or the positioning post 160 and the top cover 140 may be formed separately and then assembled.

[0115] The positioning hole 220 may be a through hole opened on the circuit board 200 . The positioning hole 220 corresponds to the position of the positioning post 160 , and the diameter of the positioning hole 220 may be slightly larger than the cross-sectional area of ​​the positioning post 160 .

[0116] Through the above-mentioned arrangement, the present application provides positioning posts 160 on the inner wall of the top cover 140 and positioning holes 220 on the circuit board 200. When the circuit board 200 is installed in the accommodating cavity, the positioning posts 160 pass through the positioning holes 220. This arrangement not only allows the positioning posts 160 to guide the installation of the circuit board 200, thereby reducing the difficulty of installing the circuit board 200, but also allows the positioning posts 160 to limit the position of the circuit board 200. This reduces the probability of the leakage protection module being affected by the unstable position of the circuit board 200, which would cause the circuit board 200 to shake when the leakage protection module shakes, thereby increasing the reliability of the leakage protection module.

Claims

1. A leakage alarm module, applied to a circuit breaker, characterized in that: include: A first shell is provided with a receiving cavity, and the first shell is provided with a mounting hole, the mounting hole is communicated with the receiving cavity; A circuit board is disposed in the accommodating cavity, wherein a wiring portion is provided on the circuit board, and the wiring portion is opposite to the mounting hole; a wire comprising a first end and a second end opposite to each other, the first end being connected to a first plug, the second end being connected to a second plug, the first plug passing through the mounting hole and electrically connected to the wiring portion, and the second plug being electrically connected to the circuit breaker; The first plug is detachably connected to the wiring portion, and the second plug is used to be detachably connected to the circuit breaker.

2. The leakage alarm module according to claim 1, characterized in that: The wiring portion is a protruding structure provided on the circuit board, and the protruding structure is provided with a mounting groove; The first plug is a block-shaped structure; When the wire is connected to the circuit board, the block structure is inserted into the installation groove, and the first plug is interference-fitted with the wiring portion.

3. The leakage alarm module according to claim 1, characterized in that: The wiring portion is a protruding structure provided on the circuit board, the protruding structure is provided with a mounting groove, and a clamping block is provided on the outer wall of the protruding structure; The first plug is a block-shaped structure, and the block-shaped structure is provided with an elastic buckle adapted to the clamping block; When the wire is connected to the circuit board, the block structure is inserted into the installation slot, and the elastic buckle is clamped to the clamping block.

4. The leakage alarm module according to claim 3, characterized in that: The mounting hole is a through slot provided on the first housing, and an inner wall of the first housing is provided with a mounting structure, the mounting structure including a first mounting channel and a second mounting channel, the second mounting channel being connected to the mounting hole through the first mounting channel; The cross-sectional dimension of the second mounting channel is larger than the cross-sectional dimension of the wiring portion, the cross-sectional dimension of the first mounting channel is larger than the cross-sectional dimension of the second mounting channel, the wiring portion is at least partially located in the second mounting channel, and the clamping block and the elastic clip are clamped in the second mounting channel.

5. The leakage alarm module according to claim 1, characterized in that: The first housing further comprises a wiring structure and a plurality of wiring terminals, wherein the wiring structure is provided on the outer wall of the first housing, and a plurality of connection slots are provided on the wiring structure at intervals, and the plurality of connection slots all pass through the first housing; The plurality of connection slots correspond one-to-one to the plurality of connection terminals. The first end of each connection terminal passes through the corresponding connection slot and extends into the accommodating cavity. The second end of each connection terminal is located outside the first shell.

6. The leakage alarm module according to claim 5, characterized in that: The plurality of connection terminals located in the accommodating cavity are separated by partitions.

7. The leakage alarm module according to claim 5, characterized in that: It also includes an insulating protective cover, which is arranged on the wiring structure and connected to the first shell. There is a wiring gap between the insulating protective cover and the first shell. The wiring gap is connected to the connecting groove, and the wiring gap is used for external conductive parts to pass through.

8. The leakage alarm module according to claim 1, characterized in that: The first shell includes a top cover and a base; At least one positioning post is provided on the inner wall of the top cover, and the positioning post is arranged toward the base. A positioning hole is provided at a position of the circuit board corresponding to the position of the positioning post, and the positioning post passes through the positioning hole so that the top cover limits the circuit board.

9. A leakage protection device, characterized in that: comprising a circuit breaker and a leakage alarm module according to any one of claims 1 to 8; The leakage alarm module is located outside the circuit breaker. The circuit breaker includes a second shell. The first shell is connected to the second shell.

10. The leakage protection device according to claim 9, characterized in that: The leakage alarm module further includes a guide block, which is arranged on the outer wall of the first shell; The second housing is provided with a slot, and the slot corresponds to the position of the guide block; The guide block is provided with a guide groove. When the leakage alarm module is installed on the circuit breaker, the guide block is clamped in the clamping groove, and the wire is at least partially located in the guide groove.

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