Leakage protector with protection device

Abstract

The utility model discloses a leakage protector with a protection device. The leakage protector is characterized in that an L-pole lead is electrically connected with an input end; the contact mechanism comprises a movable contact assembly and a static contact assembly, and the movable contact assembly and the static contact assembly are matched to form connection or disconnection; a fuse is fixed on the circuit board, one end of the fuse is electrically connected with the L-pole wire, and the other end of the fuse is electrically connected with the contact mechanism; firstly, the fuse is fixed on the circuit board, equivalently, the fuse is fixedly connected with the circuit board in the processing process of the circuit board, so that the subsequent processing of the fuse is not needed, secondly, the fuse is matched with the circuit board, the space of a module is saved, and the overall space is reduced; and finally, the fuse is connected in series between the L-pole wire and the contact mechanism, so that a circuit protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a leakage protector with a protection device. Background Art

[0002] A leakage protector (RCP) is a protective device in an electrical circuit. When a leakage occurs in the circuit, the RCP activates and disconnects the circuit. Existing RCPs also feature high-current protection, using fuses and other protective devices. However, conventional fuses are modular, with a plug-in connection to the RCP body. This increases the size of the RCP, and the plug-in connection can cause the fuse module to become detached, causing the RCP to malfunction. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is how to provide high current protection for a leakage protector. To this end, a leakage protector with a protective device comprises:

[0004] An L-pole wire electrically connected to the input terminal;

[0005] A contact mechanism, comprising a moving contact component and a stationary contact component, wherein the moving contact component cooperates with the stationary contact component to form a connection or disconnection;

[0006] A circuit board is provided with a fuse fixed on the circuit board, one end of the fuse is electrically connected to the L-pole wire, and the other end of the fuse is electrically connected to the contact mechanism.

[0007] The other end of the fuse is electrically connected to the static contact assembly.

[0008] The circuit board is provided with a wire welding hole and a contact welding hole, the L-pole wire cooperates with the wire welding hole, the static contact assembly cooperates with the contact welding hole, one end of the fuse is electrically connected to the wire welding hole, and the other end of the fuse is electrically connected to the contact welding hole.

[0009] Two conductive traces are provided on the circuit board, wherein one conductive trace connects the fuse and the wire welding hole, and the other conductive trace connects the fuse and the contact welding hole.

[0010] The circuit board is provided with a wire threading hole, and the L-pole wire passes through the wire threading hole and is electrically connected to the wire welding hole.

[0011] The fuse is of chip type.

[0012] The fuse is located on a side of the circuit board facing the contact mechanism.

[0013] The circuit board is also provided with an alarm indicator, which operates when the fuse burns out.

[0014] The technical solution of this utility model has the following advantages:

[0015] 1. The present invention provides a leakage protector with a protective device. First, the fuse is fixed to the circuit board, which is equivalent to having the fuse connected and fixed to the circuit board during the processing of the circuit board, eliminating the need for subsequent fuse processing. Second, the fuse cooperates with the circuit board, eliminating the space of a module, reducing the overall space. Finally, the fuse is connected in series between the L-pole conductor and the contact mechanism to achieve a circuit protection effect.

[0016] 2. The utility model provides a leakage protector with a protective device, in which the fuse is connected to the static contact component, which can improve the stability of the electrical connection between the two.

[0017] 3. The utility model provides a leakage protector with a protective device, and the wire welding holes and contact welding holes further improve the electrical connection quality between the circuit board.

[0018] 4. The utility model provides a leakage protector with a protective device, in which the conductive traces are arranged on the circuit board, eliminating the need for welding other conductive wires and improving welding efficiency.

[0019] 5. The utility model provides a leakage protector with a protective device, and the fuse adopts a patch type setting, which takes up less space.

[0020] 6. The utility model provides a leakage protector with a protective device, in which the fuse is located on the side of the circuit board facing the contact mechanism, forming an avoidance effect.

[0021] 7. The utility model provides a leakage protector with a protective device, and the alarm indication is used to remind the operator of a fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic structural diagram of a leakage protector with a protective device provided by the utility model;

[0024] Figure 2 A schematic diagram of the partial structure of a leakage protector with a protective device provided by the utility model;

[0025] Figure 3 A schematic diagram of the structure of the circuit board provided by the utility model;

[0026] Figure 4 This is a bottom view of the circuit board provided by the utility model.

[0027] Description of reference numerals:

[0028] 11. L-pole wire; 12. Input terminal; 13. Moving contact assembly; 14. Static contact assembly; 15. Circuit board; 16. Fuse; 17. N-pole wire; 18. Output terminal; 151. Wire welding hole; 152. Contact welding hole; 153. Conductive trace; 154. Threading hole. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[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 positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. 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] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] Example 1

[0034] This embodiment provides a leakage protector with a protective device, as shown in the attached Figure 1-4 Shown, including:

[0035] The L-pole wire 11 is electrically connected to the input terminal 12 , and here the L-pole wire 11 is electrically connected to the live wire of the input terminal 12 .

[0036] The contact mechanism includes a moving contact component 13 and a static contact component 14. The moving contact component 13 and the static contact component 14 cooperate to form a connection or disconnection. In a normal state, the moving contact component 13 and the static contact component 14 are connected. When a fault occurs, the moving contact component 13 and the static contact component 14 are disconnected.

[0037] Circuit board 15, with fuse 16 fixed to it. Here, "fixed" specifically means that fuse 16 is soldered to circuit board 15. When fuse 16 is a plug-in structure, corresponding pads are provided on circuit board 15 (through both sides of circuit board 15); alternatively, when fuse 16 is a patch structure, corresponding pads are also provided on circuit board 15 (located on one side of circuit board 15). One end of fuse 16 is electrically connected to L-pole conductor 11, and the other end of fuse 16 is electrically connected to the contact mechanism, that is, fuse 16 is connected in series between L-pole conductor 11 and the contact mechanism. First, fuse 16 is fixed to circuit board 15, which is equivalent to having already connected and fixed fuse 16 to circuit board 15 during the processing of circuit board 15, eliminating the need for subsequent processing of fuse 16. Second, fuse 16 cooperates with circuit board 15, eliminating the space of a module, reducing the overall space. Finally, fuse 16 is connected in series between L-pole conductor 11 and the contact mechanism, forming a circuit protection effect.

[0038] Specifically, as attached Figure 2-4 As shown, the other end of fuse 16 is electrically connected to static contact assembly 14. Connecting fuse 16 to static contact assembly 14 improves the stability of the electrical connection between the two. Alternatively, the other end of fuse 16 can be electrically connected to dynamic contact assembly 13, though this requires a flexible connection.

[0039] Specifically, as attached Figure 2-4 As shown, the circuit board 15 is provided with a wire welding hole 151 and a contact welding hole 152. The L-pole wire 11 engages with the wire welding hole 151, and the static contact assembly 14 engages with the contact welding hole 152. One end of the fuse 16 is electrically connected to the wire welding hole 151, and the other end of the fuse 16 is electrically connected to the contact welding hole 152. The wire welding hole 151 and the contact welding hole 152 further improve the quality of the electrical connection with the circuit board 15.

[0040] Specifically, as attached Figure 2-4 As shown, two conductive traces 153 are provided on circuit board 15. One conductive trace 153 connects fuse 16 with wire welding hole 151, thereby forming an electrical connection between fuse 16 and L-pole wire 11. The other conductive trace 153 connects fuse 16 with contact welding hole 152, thereby forming an electrical connection between static contact assembly 14 and fuse 16. The provision of conductive traces 153 on circuit board 15 eliminates the need for soldering other conductive wires, thereby improving soldering efficiency.

[0041] Specifically, as attached Figure 2-4 As shown, the circuit board 15 is provided with a threading hole 154, and the L-pole wire 11 passes through the threading hole 154 and is electrically connected to the wire welding hole 151. The provision of the threading hole 154 forms a fixing effect of the wire, preventing the wire from falling off between the wire and the circuit board 15.

[0042] Specifically, the fuse 16 is a patch type. The fuse 16 is arranged in a patch type, which takes up less space.

[0043] Specifically, as attached Figure 2-4 As shown, fuse 16 is located on the side of circuit board 15 facing the contact mechanism. This placement of fuse 16 on the side of circuit board 15 facing the contact mechanism creates a hidden area. In this embodiment, the contact mechanism and input terminal 12 are both located below circuit board 15. L-pole conductor 11 extends through threading hole 154 to the top of circuit board 15. Fuse 16 is a surface-mount type and is located on the underside of circuit board 15.

[0044] Specifically, circuit board 15 is also provided with an alarm indicator, which activates when fuse 16 burns out. The alarm indicator serves to alert the operator to a fault. The alarm indicator can be an indicator light, which illuminates normally and turns off when a fault occurs. The alarm indicator can also utilize other indicator structures, such as an indicator board.

[0045] Specifically, it also includes an N-pole wire 17, an L-pole wire 11 and an N-pole wire 17, which are electrically connected to the input terminal 12 respectively, and then the other ends pass through the wire hole 154 to be electrically connected to the circuit board 15, and the static contact component 14 cooperates with the dynamic contact component 13 to form a connection effect. At this time, the other end of the dynamic contact component 13 cooperates with the output terminal 18 to form an electrical circuit from input to output; when a leakage phenomenon occurs, the tripping mechanism in the leakage protector is activated to separate the dynamic contact component 13 from the static contact component 14, forming a disconnection protection effect; when a large current occurs, the fuse 16 burns out, forming a disconnection protection effect.

[0046] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A leakage protector with a protective device, characterized in that: include: An L-pole conductor (11), the L-pole conductor (11) being electrically connected to an input terminal (12); A contact mechanism, the contact mechanism comprising a moving contact component (13) and a stationary contact component (14), wherein the moving contact component (13) and the stationary contact component (14) cooperate to form a connection or disconnection; A circuit board (15) is fixed with a fuse (16), one end of the fuse (16) is electrically connected to the L-pole wire (11), and the other end of the fuse (16) is electrically connected to the contact mechanism.

2. The leakage protector with protection device according to claim 1, characterized in that: The other end of the fuse (16) is electrically connected to the static contact assembly (14).

3. The leakage protector with protection device according to claim 2, characterized in that: The circuit board (15) is provided with a wire welding hole (151) and a contact welding hole (152); the L-pole wire (11) cooperates with the wire welding hole (151); the static contact assembly (14) cooperates with the contact welding hole (152); one end of the fuse (16) is electrically connected to the wire welding hole (151); and the other end of the fuse (16) is electrically connected to the contact welding hole (152).

4. The leakage protector with protection device according to claim 3, characterized in that: Two conductive traces (153) are provided on the circuit board (15), one of the conductive traces (153) connects the fuse (16) and the wire welding hole (151), and the other conductive trace (153) connects the fuse (16) and the contact welding hole (152).

5. The leakage protector with protection device according to claim 3, characterized in that: The circuit board (15) is provided with a wire threading hole (154), and the L-pole wire (11) passes through the wire threading hole (154) and is electrically connected to the wire welding hole (151).

6. The leakage protector with protection device according to claim 1, characterized in that: The fuse (16) is of patch type.

7. The leakage protector with protection device according to claim 6, characterized in that: The fuse (16) is located on a side of the circuit board (15) facing the contact mechanism.

8. The leakage protector with protection device according to claim 1, characterized in that: The circuit board (15) is also provided with an alarm indicator, which operates when the fuse (16) burns out.

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