An electric leakage protection plug

Abstract

The utility model discloses a leakage protection plug, include: the body fixed circuit board, and the body is equipped with the jack, input conductive sheet part extends to the body outside through the body, and input conductive sheet part is located in the body, and input conductive sheet is equipped with static contact point, movable contact piece is located in the body, and movable contact piece is equipped with dynamic contact point, and dynamic contact point and static contact point adhere to each other, realize movable contact piece and input conductive sheet's electrical connection, jumper sheet is located in the body, socket conductive sheet is equipped with the socket part, and the socket part corresponds with the jack, jumper sheet one end and movable contact piece one end pass through circuit board in common, and jumper sheet, movable contact piece, circuit board are the soldering tin connection, jumper sheet other end and socket conductive sheet one end pass through circuit board in common, and jumper sheet, socket conductive sheet, circuit board are the soldering tin connection, this structure is favorable to assembly, reduces the installation difficulty, and fixed is more stable, and electrical connection effect is good.

Description

Technical Field

[0001] This utility model relates to the electrical field, specifically to a leakage current protection plug. Background Technology

[0002] Most existing residual current circuit breaker plugs use a wire connection at the output end to achieve the output function. While some use a socket-type output, the overall layout of existing residual current circuit breaker plugs is unreasonable, making assembly difficult. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is how to optimize the layout and improve assembly efficiency. To this end, a leakage protection plug includes:

[0004] The main body has a circuit board fixed to it and is provided with a socket.

[0005] An input conductive sheet is provided, wherein a portion of the input conductive sheet extends through the body to the outside of the body, and a portion of the input conductive sheet is located within the body; the input conductive sheet is provided with a stationary contact.

[0006] A movable contact piece is located within the body. The movable contact piece has a movable contact point that abuts against the stationary contact point, thereby achieving an electrical connection between the movable contact piece and the input conductive piece.

[0007] A jumper piece, wherein the jumper piece is located within the body;

[0008] A socket conductive sheet, wherein the socket conductive sheet has a socket portion corresponding to the socket hole;

[0009] One end of the jumper piece and one end of the movable contact piece pass through the circuit board together, and the jumper piece, the movable contact piece, and the circuit board are connected by solder; the other end of the jumper piece and one end of the socket conductive piece pass through the circuit board together, and the jumper piece, the socket conductive piece, and the circuit board are connected by solder.

[0010] It also includes a tripping bracket, which has a first guide groove and a second guide groove. The moving contact passes through the first guide groove, and the input conductive piece passes through the second guide groove.

[0011] It also includes a trip unit and a coil assembly. The trip unit rotates relative to the trip bracket. The coil assembly includes a drive rod. In a first state, the moving contact is separated from the stationary contact, the moving contact piece drives the trip unit to rotate, and the trip unit drives the drive rod to move. In a second state, the coil assembly receives a signal, the drive rod moves, the drive rod drives the trip unit to rotate, and the trip unit drives the moving contact piece to move, so that the moving contact and the stationary contact are pressed together.

[0012] The drive rod has a flange, the release device has a slot, the drive rod passes through the slot, and the side wall of the slot is located on the movement trajectory of the flange.

[0013] One of the trip unit and the trip bracket is provided with a rotating hub, and the other of the trip unit and the trip bracket is provided with a rotating groove that cooperates with the rotating hub.

[0014] The tripping bracket is snapped together with the circuit board. One of the tripping bracket and the circuit board is provided with a snap, and the other of the tripping bracket and the circuit board is provided with a snap-fit ​​groove that cooperates with the snap.

[0015] It also includes a grounding component, which includes a grounding pin, a grounding connecting piece, and a grounding socket piece. The grounding connecting piece connects the grounding pin and the grounding socket piece. The grounding pin extends through the body to the outside of the body, and the grounding socket piece mates with the socket.

[0016] It also includes a first seal, through which the input conductive sheet passes and the body extends to the outside of the body.

[0017] It also includes a pressure plate, with the first seal located between the pressure plate and the body.

[0018] It also includes a second seal, the body comprising a top cover and a base, the second seal being located between the top cover and the base.

[0019] The technical solution of this utility model has the following advantages:

[0020] 1. This utility model provides a leakage current protection plug. By dividing the conductive sheet into a multi-segment structure, it facilitates assembly and reduces installation difficulty. Furthermore, the electrical connection between the conductive sheet and the circuit board is achieved through soldering, and the circuit board also provides a fixing effect, improving the stability of the fixation. It should be noted that this structure involves assembly first, followed by soldering to achieve both electrical connection and fixation. Compared to direct welding or riveting, this fixing method provides greater stability and a better electrical connection effect.

[0021] 2. The leakage protection plug provided by this utility model, with its first and second guide grooves, provides further guiding and fixing effects, preventing the moving contact and input conductive plate from shaking and improving stability during assembly. Alternatively, other structures can be used to achieve the same fixing effect on the moving contact and input conductive plate.

[0022] 3. The leakage protection plug provided by this utility model uses the elastic effect of the moving contact to drive the trip unit to move, thereby realizing the action of the drive rod. When a signal is received, the drive rod can move to drive the trip unit to rotate, ultimately realizing the electrical connection between the moving contact and the input conductive piece.

[0023] 4. The leakage protection plug provided by this utility model has a rotating hub and a rotating groove that cooperate to realize the rotational cooperation between the trip unit and the trip bracket.

[0024] 5. The leakage protection plug provided by this utility model has a snap-fit ​​connection, which realizes the fixing effect of the trip bracket, so that the trip bracket, trip device, coil assembly and circuit board are formed into a module, further improving assembly efficiency.

[0025] 6. The leakage protection plug provided by this utility model has a first sealing element that improves the sealing effect at the insertion position.

[0026] 7. The leakage protection plug provided by this utility model has a pressure plate that further improves the sealing effect of the first sealing element.

[0027] 8. The leakage protection plug provided by this utility model has an improved overall sealing level due to the setting of the second sealing element. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the leakage protection plug provided by this utility model;

[0030] Figure 2 Another structural schematic diagram of the leakage protection plug provided by this utility model;

[0031] Figure 3 Exploded view of the leakage protection plug provided by this utility model;

[0032] Figure 4A partial cross-sectional view of the leakage protection plug provided by this utility model;

[0033] Figure 5 Exploded view of the grounding component provided by this utility model;

[0034] Figure 6 A partial exploded view of the leakage protection plug provided by this utility model;

[0035] Figure 7 A cross-sectional view of the leakage protection plug provided by this utility model;

[0036] Figure 8 for Figure 7 Enlarged view of part A in the middle;

[0037] Figure 9 Another cross-sectional view of the leakage protection plug provided by this utility model;

[0038] Figure 10 for Figure 9 Enlarged view of part B in the middle;

[0039] Figure 11 A cross-sectional view of the first state provided by this utility model;

[0040] Figure 12 A cross-sectional view of the second state provided by this utility model.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100. Body; 1. Top cover; 101. Socket; 2. Base; 31. Input conductive plate; 32. Stationary contact; 311. Support foot; 33. Moving contact plate; 331. Lateral part; 332. Longitudinal part; 34. Moving contact; 35. Jumper piece; 361. Drive rod; 3611. Flange; 362. Coil; 3621. Frame; 363. Trip unit; 3631. Rotating pivot; 3632. Slot; 364. Trip bracket; 3641. Rotating groove; 3642. Second guide groove; 3643. First guide groove; 37. Circuit board; 4. Socket conductive plate; 41. Socket part; 51. Grounding pin; 52. Grounding connection piece; 53. Grounding socket piece; 6. Second seal; 7. First seal; 8. Pressure plate; 9. Buckle; 10. Snap-fit ​​groove. Detailed Implementation

[0043] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. 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.

[0044] 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 this utility model 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 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.

[0045] 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.

[0046] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0047] Example 1

[0048] This embodiment provides a leakage current protection plug, as shown in the attached figure. Figures 1-12 As shown, it includes:

[0049] The main body 100 includes a top cover 1 and a base 2, which mate to form a cavity. A circuit board 37 is fixed to the main body 100 within the cavity. The main body 100 has a socket 101 located on its top surface, specifically on the top cover 1. In this embodiment, the socket 101 can have two holes or three holes, and those skilled in the art can adjust it according to actual needs.

[0050] Two input conductive plates 31 are used, one for the neutral wire and one for the live wire. These two plates are insulated from each other and do not form an electrical connection. This is common knowledge; therefore, this embodiment only describes the electrical connection structure of one input conductive plate 31, while the other is symmetrically arranged. A portion of the input conductive plate 31 extends through the body 100 to the outside, forming a plug for connection to power supply equipment. In this embodiment, the input conductive plate 31 extends through the base 2 to the outside of the body 100. A portion of the input conductive plate 31 is located inside the body 100 and has a stationary contact 32. This stationary contact 32 engages with a moving contact to achieve electrical connection or disconnection. Furthermore, to improve the quality of the electrical connection, the stationary contact 32 can be made of silver.

[0051] The movable contact 33 is located inside the body 100. The movable contact 33 is provided with a movable contact point. The movable contact point is in contact with the stationary contact point 32 to achieve electrical connection between the movable contact 33 and the input conductive sheet 31. Conversely, when the movable contact point is separated from the stationary contact point 32, electrical separation is formed between the movable contact 33 and the input conductive sheet 31.

[0052] Jumper piece 35 is located inside the main body 100.

[0053] The socket conductive sheet 4 has a socket portion 41, which corresponds to the socket hole 101. External electrical equipment passes through the socket hole 101 and connects to the socket portion 41 to form an electrical connection. The socket portion 41 has a clamping and fixing effect, which is prior art and will not be described in detail in this embodiment.

[0054] One end of jumper piece 35 and one end of moving contact piece 33 pass through circuit board 37 together. Jumper piece 35, moving contact piece 33, and circuit board 37 are connected by solder. "Passing through the same hole in circuit board 37" means that jumper piece 35 and moving contact piece 33 are then soldered to secure them. The other end of jumper piece 35 and one end of socket conductive piece 4 pass through circuit board 37 together. Jumper piece 35, socket conductive piece 4, and circuit board 37 are connected by solder. "Passing through the same hole in circuit board 37" means that jumper piece 35 and socket conductive piece 4 are then soldered to secure them. Jumper piece 35 enables electrical connection between moving contact piece 33 and socket conductive piece 4. When the moving contact is connected to the stationary contact 32, electrical connection is formed between input conductive piece 31, moving contact piece 33, and socket conductive piece 4. When the moving contact is separated from the stationary contact 32, input conductive piece 31 and socket conductive piece 4 are disconnected, and power cannot be supplied. By dividing the conductive sheet into a multi-segment structure, assembly is facilitated and installation difficulty is reduced. Furthermore, soldering connects the conductive sheet to the circuit board 37, achieving electrical connection and securing the sheet. The circuit board 37 also provides a fixing effect, improving stability. It should be noted that this structure involves assembly first, followed by soldering to achieve electrical connection and fixation. Compared to direct soldering or riveting, this fixing method offers greater stability and better electrical connection.

[0055] Specifically, as shown in the attached document Figure 6 As shown, the system also includes a tripping bracket 364, which has a first guide groove 3643 and a second guide groove 3642. In this embodiment, there are two first guide grooves 3643, which are independently arranged. There are also two second guide grooves 3642, which are also independently arranged. Here, both the first guide groove 3643 and the second guide groove 3642 extend along the height direction of the body 100. The moving contact 33 passes through the first guide groove 3643, and the input conductive piece 31 passes through the second guide groove 3642. The arrangement of the first guide groove 3643 and the second guide groove 3642 provides a further guiding and fixing effect, preventing the moving contact 33 and the input conductive piece 31 from shaking and improving the stability during assembly. In addition, other structures can also be used to achieve the fixing effect on the moving contact 33 and the input conductive piece 31.

[0056] Specifically, as shown in the attached document Figure 3As shown, in this embodiment, the input conductive sheet 31 has a strip-shaped structure with legs 311, and the stationary contact 32 is fixed to the legs 311. The moving contact sheet 33 is shaped like a figure 7, including a horizontal portion 331 and a vertical portion 332. The vertical portion 332 passes through the first guide groove 3643, and the moving contact 34 is fixed to the horizontal portion 331. Here, the horizontal portion 331 and the vertical portion 332 are vertically connected. When the end point of the horizontal portion 331 is driven, the horizontal portion 331 has a certain elastic effect, which can make the horizontal portion 331 return to its original position.

[0057] Specifically, as shown in the attached document Figure 3 , Figure 6 As shown, it also includes a trip unit 363 and a coil assembly. The trip unit 363 rotates relative to the trip support 364, which is in a fixed state at this time. The coil assembly includes a drive rod 361, a coil 362, and a frame 3621. The coil 362 is wound around the frame 3621, which is prior art. The drive rod 361 extends partially into the coil 362. When the coil 362 is energized, it can drive the drive rod 361 to move. Here, the drive rod 361 can also be an iron core. Those skilled in the art should know the tripping principle of the coil assembly. In the first state, specifically the open circuit state, the coil assembly is not energized and does not control the drive rod 361 to move. The moving contact separates from the stationary contact 32. The moving contact piece 33 drives the trip unit 363 to rotate under its own elasticity. The trip unit 363 drives the drive rod 361 to move, causing the drive rod 361 to move away from the frame 3621. In the second state, which is the connected state, the coil assembly receives a signal, the coil 362 is energized, and the drive rod 361 moves. At this time, the drive rod 361 moves towards the frame 3621. During the movement of the drive rod 361, the trip unit 363 rotates, and the trip unit 363 moves the moving contact 33, causing the moving contact 33 to move downward, so that the moving contact abuts against the stationary contact 32. Through the elastic effect of the moving contact 33, the trip unit 363 moves, realizing the action of the drive rod 361. When a signal is received, the drive rod 361 can move again, driving the trip unit 363 to rotate, ultimately realizing the electrical connection between the moving contact 33 and the input conductive plate 31.

[0058] Specifically, as shown in the attached document Figures 3-12As shown, the drive rod 361 has a flange 3611, which is located on the side of the drive rod 361 away from the frame 3621. The cross-sectional area of ​​the flange 3611 is larger than the dimensions of the rest of the drive rod 361, and the cross-sectional area of ​​the flange 3611 is larger than the width of the slot 3632. The trip unit 363 has a slot 3632, through which the drive rod 361 passes. The side wall of the slot 3632 is located on the movement trajectory of the flange 3611, thus enabling the flange 3611 to drive the trip unit 363 to rotate when the drive rod 361 moves toward the frame 3621.

[0059] Specifically, as shown in the attached document Figure 3 , Figure 6 As shown, one of the trip unit 363 and the trip bracket 364 is provided with a rotation hub 3631, and the other of the trip unit 363 and the trip bracket 364 is provided with a rotation groove 3641 that mates with the rotation hub 3631. The engagement of the rotation hub 3631 and the rotation groove 3641 enables the rotational engagement of the trip unit 363 and the trip bracket 364. When the trip unit 363 is provided with the rotation hub 3631, the trip bracket 364 is provided with the rotation groove 3641; conversely, when the trip unit 363 is provided with the rotation groove 3641, the trip bracket 364 is provided with the rotation hub 3631.

[0060] Specifically, as shown in the attached document Figure 4 As shown, the trip bracket 364 is snap-fitted to the circuit board 37. One of the trip bracket 364 and the circuit board 37 has a snap-fit ​​9, and the other has a snap-fit ​​groove 10 that mates with the snap-fit ​​9. This snap-fit ​​connection secures the trip bracket 364, allowing the trip bracket 364, trip unit 363, coil assembly, and circuit board 37 to form a single module, further improving assembly efficiency. When the trip bracket 364 has the snap-fit ​​9, the circuit board 37 has the snap-fit ​​groove 10; conversely, when the trip bracket 364 has the snap-fit ​​groove 10, the circuit board 37 has the snap-fit ​​9. In this embodiment, the circuit board 37 having the snap-fit ​​groove 10 is used as an example for description.

[0061] Specifically, as shown in the attached document Figure 5 As shown, it also includes a grounding assembly, which includes a grounding pin 51, a grounding connecting piece 52, and a grounding socket piece 53. The grounding connecting piece 52 connects the grounding pin 51 and the grounding socket piece 53. The grounding pin 51 extends through the body 100 to the outside of the body 100, and the grounding socket piece 53 mates with the socket 101. In this embodiment, one end of the grounding pin 51 and the grounding connecting piece 52 are riveted together. The other end of the grounding socket piece 53 and the grounding connecting piece 52 are also riveted together. Here, the grounding socket piece 53 mates with the socket conductive piece 4 to form a three-hole structure.

[0062] Specifically, as shown in the attached document Figures 7-8As shown, it also includes a first sealing element 7, through which the input conductive piece 31 extends to the outside of the body 100. The first sealing element 7 improves the sealing effect at the insertion position. Here, both input conductive pieces 31 pass through the first sealing element 7.

[0063] Specifically, as shown in the attached document Figures 7-8 As shown, it also includes a pressure plate 8, and a first sealing element 7 is located between the pressure plate 8 and the body 100. The pressure plate 8 further improves the sealing effect of the first sealing element 7. The first sealing element 7 is located between the pressure plate 8 and the bottom surface of the base 2. Here, the pressure plate 8 can be fixed by positioning it with the base 2, or the pressure plate 8 can be fixed by bolts connecting it to the base 2. Here, the first sealing element 7 is a sealing material, such as rubber.

[0064] Specifically, as shown in the attached document Figures 9-10 As shown, it also includes a second sealing element 6. The body 100 includes an upper cover 1 and a base 2, with the second sealing element 6 located between the upper cover 1 and the base 2. The provision of the second sealing element 6 improves the overall sealing level. In this embodiment, the second sealing element 6 has a U-shaped structure, further improving the sealing effect. Here, the second sealing element 6 is made of a sealing material, such as rubber.

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A leakage current protection plug, characterized in that, include: The body (100) has a circuit board (37) fixed to it and a socket (101) provided. An input conductive sheet (31) is provided, wherein a portion of the input conductive sheet (31) extends through the body (100) to the outside of the body (100), and a portion of the input conductive sheet (31) is located inside the body (100). The input conductive sheet (31) is provided with a stationary contact (32). The movable contact (33) is located inside the body (100). The movable contact (33) is provided with a movable contact point. The movable contact point is in contact with the stationary contact point (32) to realize the electrical connection between the movable contact (33) and the input conductive sheet (31). A jumper piece (35) is located within the body (100); A socket conductive sheet (4) is provided with a socket part (41), which corresponds to the socket (101); One end of the jumper piece (35) and one end of the moving contact piece (33) pass through the circuit board (37), and the jumper piece (35), the moving contact piece (33), and the circuit board (37) are connected by solder; the other end of the jumper piece (35) and one end of the socket conductive piece (4) pass through the circuit board (37), and the jumper piece (35), the socket conductive piece (4), and the circuit board (37) are connected by solder.

2. The leakage protection plug according to claim 1, characterized in that, It also includes a tripping bracket (364), which has a first guide groove (3643) and a second guide groove (3642). The moving contact piece (33) passes through the first guide groove (3643), and the input conductive piece (31) passes through the second guide groove (3642).

3. The leakage protection plug according to claim 2, characterized in that, It also includes a trip unit (363) and a coil assembly, wherein the trip unit (363) rotates relative to the trip bracket (364), and the coil assembly includes a drive rod (361). In a first state, the moving contact is separated from the stationary contact (32), the moving contact piece (33) drives the trip unit (363) to rotate, and the trip unit (363) drives the drive rod (361) to move. In the second state, the coil assembly receives a signal, the drive rod (361) moves, the drive rod (361) drives the trip unit (363) to rotate, and the trip unit (363) drives the moving contact (33) to move, so that the moving contact and the stationary contact (32) abut against each other.

4. The leakage protection plug according to claim 3, characterized in that, The drive rod (361) is provided with a flange (3611), the release device (363) is provided with a slot (3632), the drive rod (361) passes through the slot (3632), and the side wall of the slot (3632) is located on the movement trajectory of the flange (3611).

5. The leakage protection plug according to claim 3, characterized in that, One of the trip unit (363) and the trip bracket (364) is provided with a rotating hub (3631), and the other of the trip unit (363) and the trip bracket (364) is provided with a rotating groove (3641) that cooperates with the rotating hub (3631).

6. The leakage protection plug according to claim 2, 3, or 5, characterized in that, The tripping bracket (364) is snapped together with the circuit board (37). One of the tripping bracket (364) and the circuit board (37) is provided with a buckle (9), and the other of the tripping bracket (364) and the circuit board (37) is provided with a snap-fit ​​groove (10) that cooperates with the buckle (9).

7. The leakage protection plug according to claim 1, characterized in that, It also includes a grounding assembly, which includes a grounding pin (51), a grounding connecting piece (52), and a grounding socket piece (53). The grounding connecting piece (52) connects the grounding pin (51) and the grounding socket piece (53). The grounding pin (51) extends through the body (100) to the outside of the body (100), and the grounding socket piece (53) mates with the socket (101).

8. The leakage protection plug according to claim 1, characterized in that, It also includes a first seal (7), through which the input conductive sheet (31) extends to the outside of the body (100) via the first seal (7) and the body (100).

9. The leakage protection plug according to claim 8, characterized in that, It also includes a pressure plate (8), and the first seal (7) is located between the pressure plate (8) and the body (100).

10. The leakage protection plug according to claim 1, characterized in that, It also includes a second seal (6), the body (100) includes a top cover (1) and a base (2), and the second seal (6) is located between the top cover (1) and the base (2).

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