Leakage protection socket convenient to assemble

Abstract

The utility model relates to the technical field of leakage circuit breaker protection, and discloses a leakage protection socket convenient to assemble, which comprises a base and a middle-layer bracket, the middle-layer bracket is positioned above the base and is buckled and connected with the base, a circuit board is arranged in the base, two conductive metal sheets are respectively arranged on two sides of the middle-layer bracket, and the leakage protection socket further comprises a test piece, one end of the test piece is fixedly connected with the circuit board, the other end of the test piece extends to the side, back to the circuit board, of one conductive metal sheet, the middle-layer support is further provided with a through test hole, a button assembly is installed on the side, back to the circuit board, of the test piece, one end of the button assembly penetrates through the test hole, and the other end of the button assembly is exposed out of the shell. The sinking distance of the button assembly abutting against the test piece is larger than the distance from the end portion of the test piece to one conductive metal sheet, when the electric leakage protection socket is produced, only the test piece needs to be inserted into the circuit board and fixed to the circuit board, other operations are not needed, assembling of the electric leakage protection socket is facilitated, the electric leakage protection socket is suitable for automatic production and assembling, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of leakage protection, in particular to a leakage protection socket convenient to assemble. BACKGROUND

[0002] The leakage protection socket is a safe electrical socket for preventing electric shock accidents caused by leakage of electrical equipment. The leakage protection socket detects leakage by monitoring current balance. Under normal circumstances, current flows into electrical equipment through the live wire and then returns through the neutral wire. If current imbalance is detected, i.e. there is leakage, the socket will quickly cut off the power supply.

[0003] The existing leakage protection socket, for example, (patent No. CN201515109U) generally includes a shell, a control circuit board for realizing power output of the leakage protection socket is installed in the shell, a pair of power line input metal sheets are provided on the control circuit board, a test button is provided on the upper part of the shell, an elastic metal sheet for manually generating simulated leakage current and a simulated leakage current limiting resistor are also provided below the test button, one end of the elastic metal sheet is connected with the live wire or the neutral wire of the power output end of the leakage protection socket, the other end is suspended, and a simulated leakage current limiting resistor is provided below it; one end of the simulated leakage current limiting resistor is suspended below the elastic metal sheet, and the other end is connected with the neutral wire or the live wire of the power input end. When the test button is pressed downward, the elastic metal sheet contacts the simulated leakage current limiting resistor to manually generate simulated leakage current; when the test button is released, the elastic metal sheet is disconnected from the simulated leakage current limiting resistor, and the simulated leakage current disappears.

[0004] However, in the actual production process, the leakage limiting resistor needs to be first inserted through the circuit board and welded with the circuit board, and then the elastic metal sheet is aligned with the leakage limiting resistor in the vertical direction and fixedly connected with the conductive metal sheet. The assembly process is relatively complicated, which affects the processing efficiency of production, so it should be optimized. Content of the utility model

[0005] In order to facilitate the assembly of the leakage protection socket, a leakage protection socket convenient to assemble is provided.

[0006] The above application purpose of the present application is realized by the following technical scheme:

[0007] The utility model provides an easy-to-assemble leakage protection socket, which comprises a base and a middle layer support, the middle layer support is located above the base and is connected with the base in a clamping manner, a circuit board is installed in the base, two conductive metal sheets are installed on the two sides of the middle layer support respectively, a test piece is further provided, one end of the test piece is fixedly connected with the circuit board, the other end of the test piece extends to one side of the conductive metal sheet away from the circuit board, a test hole is further formed in the middle layer support, a button assembly is installed on the side of the test piece away from the circuit board, one end of the button assembly penetrates through the test hole, and the other end of the button assembly is exposed outside the shell, and the distance by which the button assembly presses and sinks the test piece is greater than the distance from the end of the test piece to the conductive metal sheet.

[0008] When the button assembly is pressed, the button assembly presses the test piece and drives the test piece to move towards the circuit board, so that the test piece abuts against the conductive metal sheet, the electrical connection between the circuit board and the conductive metal sheet is connected, and a simulated leakage current is generated. When the button assembly is released, the button assembly no longer presses the test piece, so that the connection between the test piece and the conductive metal sheet is disconnected, the electrical connection between the circuit board and the conductive metal sheet is disconnected, and the simulated leakage current disappears. When the leakage protection socket is produced, the test piece is only inserted on the circuit board and fixed with the circuit board, and then the button assembly is pressed to realize the connection between the circuit board and the conductive metal sheet, which is more convenient and efficient, does not require other operations, facilitates the assembly of the leakage protection socket, is suitable for automatic production and assembly, and improves the production efficiency.

[0009] Optionally, the test piece comprises a vertical connecting piece, a vertical fixing block is fixed on the circuit board, the fixing block is provided with a slot in the vertical direction, and one end of the vertical connecting piece penetrates through the slot and is fixedly connected with the circuit board.

[0010] By adopting the above technical scheme, if the fixing block does not limit the test piece in the vertical direction, the vertical connecting piece may be bent in the process of repeated test operation, thereby reducing the stability of the electrical connection between the test piece and the conductive metal sheet. Therefore, the fixing block can limit the vertical connecting piece in the vertical direction, can reduce the risk of deformation of the vertical connecting piece, and can make the connection between the test piece and the conductive metal piece more reliable.

[0011] Optionally, the test piece further comprises a horizontal elastic piece, one end of the horizontal elastic piece is fixedly connected with the vertical connecting piece, and the other end of the horizontal elastic piece extends to one side of the conductive metal sheet away from the circuit board, a limiting block is fixed on the fixing block, the limiting block is located on the side of the horizontal elastic piece facing the circuit board, and the limiting block is in the axial direction of the test hole.

[0012] By adopting the technical scheme, when the button assembly is pressed, the button assembly moves in the direction of pressing the horizontal elastic sheet towards the circuit board, the horizontal elastic sheet is connected with the conductive metal sheet in abutment, the limiting block can block the horizontal elastic sheet, after the horizontal elastic sheet abuts with the conductive metal sheet, the limiting block blocks the horizontal elastic sheet from further moving downwards, avoids the horizontal elastic sheet from being stuck with the conductive metal sheet due to excessive pressing, and reduces the risk that the horizontal elastic sheet cannot be effectively bounced up.

[0013] Optionally, the horizontal elastic sheet comprises a contact part and a pressing part, the pressing part abuts with the button assembly, and the contact part is located on the side of the conductive metal sheet away from the circuit board, and the end of the contact part extends towards the button assembly.

[0014] By adopting the technical scheme, when the contact part abuts with the conductive metal sheet, if the contact part is designed in a straight line, the contact area between the contact part and the conductive metal sheet is small, which may cause unstable electrical connection between the horizontal elastic sheet and the conductive metal sheet, and the design that the end of the contact part extends towards the button assembly can increase the contact area between the contact part and the conductive metal sheet, and ensure the reliability of the electrical connection between the horizontal elastic sheet and the conductive metal sheet.

[0015] Optionally, a protrusion is installed on the side of the horizontal elastic sheet towards the circuit board.

[0016] By adopting the technical scheme, if there is no protrusion, during repeated test operations, the horizontal elastic sheet directly contacts with the plane of the conductive metal sheet, and long-time friction may cause wear of the surfaces of the horizontal elastic sheet or the conductive metal sheet, which affects the electrical conductivity and service life; the protrusion can make the contact point more concentrated, reduce the large-area friction between the planes, ensure the close contact between the horizontal elastic sheet and the conductive metal sheet, and make the horizontal elastic sheet more accurately contact with the conductive metal sheet when being pressed down, so as to ensure that the leakage protection socket can normally work for a long time.

[0017] Optionally, a fixed tube coaxial with the test hole is fixed on the middle layer support, the inner diameter of the fixed tube is equal to the inner diameter of the test hole, a limiting ring is fixed in the fixed tube along the vertical axial direction of the fixed tube, and a limiting slot for the button assembly to fit through is formed in the limiting ring in the axial direction.

[0018] By adopting the technical scheme, the limiting ring can limit the button assembly in the axial direction of the fixed tube, and when the button assembly presses the test piece, it can ensure that the button assembly can vertically press the test piece, and ensure the reliability of the connection between the button assembly and the test piece.

[0019] Optionally, the button assembly includes a pressure rod and a test button. One end of the pressure rod fits through the limiting groove, and the other end is fixedly connected to the test button. The end of the pressure rod facing the test piece is located on the side of the limiting ring facing the test piece.

[0020] By adopting the above technical solution, when the pressure rod abuts against the test piece in the axial direction of the limiting ring, the end of the pressure rod is located on the side of the limiting ring facing the circuit board, which can ensure the sliding stability of the pressure rod in the axial direction and reduce the risk of the pressure rod slipping out of the limiting ring.

[0021] Optionally, the button assembly further includes a spring, which is sleeved on the outer periphery of the pressure rod, with one end of the spring abutting against the test button and the other end abutting against the side of the limiting ring facing away from the test piece.

[0022] By adopting the above technical solution, when the test button is pressed down, the test button presses against the spring to store elastic potential energy, and at the same time the pressing rod abuts against the side of the test piece facing away from the circuit board. When the test button is released, the spring will release the stored elastic potential energy and pop the test button up, ensuring that the pressing rod and the test piece do not abut against each other, reducing the risk of accidentally pressing the test button and pressing the test piece.

[0023] In summary, this application has at least the following beneficial effects:

[0024] 1. By pressing the test piece against the button assembly, the circuit board is connected to the conductive metal plate. This reduces the cumbersome wiring steps required in traditional manufacturing processes for residual current circuit breakers (RCCBs). Only the test piece needs to be connected to the circuit board, facilitating RCCB assembly and improving production efficiency. Attached Figure Description

[0025] Figure 1 An exploded view of a leakage current protection socket that is easy to assemble;

[0026] Figure 2 This is an exploded view of the area between the middle support and the base.

[0027] Figure 3 for Figure 1 Cross-section Figure 1 ;

[0028] Figure 4 This is a cross-sectional view of the middle layer support;

[0029] Figure 5 for Figure 1 Cross-section Figure 2 .

[0030] Reference numerals: 1. Base; 2. Middle layer support; 21. Conductive metal sheet; 22. Fixing groove; 23. Fixing tube; 24. Test hole; 25. Limiting ring; 251. Limiting groove; 3. Circuit board; 31. Fixing block; 311. Slot; 32. Test piece; 321. Vertical connecting piece; 322. Horizontal elastic piece; 3221. Pressing part; 3222. Contact part; 3223. Protrusion; 33. Limiting block; 4. Top cover; 41. Button groove; 5. Button assembly; 51. Test button; 52. Spring; 53. Pressing rod. Detailed Implementation

[0031] The following section provides a more detailed description, in conjunction with the accompanying diagrams:

[0032] As attached Figure 1 As shown, an easy-to-assemble leakage protection socket includes a base 1, a circuit board 3, a middle support 2, and a top cover 4.

[0033] As attached Figure 2 As shown, the middle support 2 is located above the base 1 and is fastened to the base 1. The middle support 2 includes a conductive metal sheet 21.

[0034] There are two conductive metal pieces 21. The two conductive metal pieces 21 are located on both sides of the middle layer bracket 2 and are both snapped into the middle layer bracket 2. One end of the two conductive metal pieces 21 is connected to the live wire and the neutral wire of the power output terminal of the leakage protection socket, respectively, and the other end of the two conductive metal pieces 21 is suspended.

[0035] The middle layer support 2 also has a through fixing groove 22, and the side of one of the conductive metal sheets 21 is located in the fixing groove 22.

[0036] As attached Figure 2 and attached Figure 3 As shown, the circuit board 3 is located inside the base 1. The circuit board 3 is connected to the neutral or live wire of the power input terminal. The circuit board 3 includes a fixing block 31, a test piece 32 and a limiting block 33. The fixing block 31 is perpendicularly fixed to the circuit board 3. The fixing block 31 has a through slot 311 along its own installation direction.

[0037] The test piece 32 is a metal sheet with elastic material. The test piece 32 is located above the circuit board 3. The test piece 32 includes a vertical connecting piece 321 and a horizontal elastic piece 322. The vertical connecting piece 321 and the horizontal elastic piece 322 are vertically fixedly connected, and the connection is smooth.

[0038] The vertical connecting piece 321 is parallel to the fixed block 31, one end of the vertical connecting piece 321 penetrates the slot 311 and is fixedly connected with the circuit board 3, and the other end is fixedly connected with the horizontal elastic piece 322. The fixed block 31 can limit the vertical connecting piece 321 in the vertical direction, and can reduce the risk of deformation of the vertical connecting piece 321.

[0039] The horizontal elastic piece 322 is parallel to the circuit board 3, and the horizontal elastic piece 322 includes a pressing portion 3221 and a contact portion 3222. One end of the pressing portion 3221 is fixedly connected with the vertical connecting piece 321, and the other end is fixedly connected with the contact portion 3222.

[0040] One end of the contact portion 3222 is fixedly connected with the pressing portion 3221, and the other end is bent and extends to the side of the conductive metal sheet 21 away from the circuit board 3 through the fixed slot 22, and the end of the contact portion 3222 is bent and extends toward the other conductive metal sheet 21, so that the contact area between the contact portion 3222 and the conductive metal sheet 21 is increased, and the reliability of the electrical connection between the contact portion 3222 and the conductive metal sheet 21 is ensured.

[0041] The horizontal elastic piece 322 is provided with a protrusion 3223 on the side facing the circuit board 3, which reduces the wear between the horizontal elastic piece 322 and the surface of the conductive metal sheet 21, ensures the close contact between the horizontal elastic piece 322 and the conductive metal sheet 21, and ensures that the leakage protection socket can work normally for a long time.

[0042] The limiting block 33 is fixedly connected with the fixed block 31, and the limiting block 33 is located on the side of the pressing portion 3221 facing the circuit board 3. After the horizontal elastic piece 322 abuts against the conductive metal sheet 21, the limiting block 33 blocks the horizontal elastic piece 322 from further moving downward, avoids the horizontal elastic piece 322 from being too pressed and causing the horizontal elastic piece 322 to be clamped with the conductive metal sheet 21, and reduces the risk that the horizontal elastic piece 322 cannot be effectively bounced up.

[0043] As shown in Figs. 1 and 2, the middle layer support 2 is provided with a plurality of fixed slots 22, and the fixed slots 22 are arranged in the horizontal direction of the middle layer support 2. Figure 4 As shown in Figs. 1 and 2, the middle layer support 2 is provided with a plurality of fixed slots 22, and the fixed slots 22 are arranged in the horizontal direction of the middle layer support 2. Figure 5 As shown in Figs. 1 and 2, the middle layer support 2 is provided with a plurality of fixed slots 22, and the fixed slots 22 are arranged in the horizontal direction of the middle layer support 2.

[0044] The upper cover 4 is located above the middle layer support 2, and the upper cover 4 is connected with the middle layer support 2 in a buckling manner. The button assembly 5 is installed between the upper cover 4 and the middle layer support 2, and the button assembly 5 includes a test button 51, a spring 52 and a pressing rod 53.

[0045] The upper cover 4 is provided with a through button slot 41, the button slot 41 is aligned with the test hole 24, and the test button 51 is fitted in the button slot 41.

[0046] The pressing rod 53 is perpendicular to the horizontal elastic sheet 322, one end of the pressing rod 53, away from the horizontal elastic sheet 322, is fixedly connected with the test button 51, one end of the pressing rod 53, towards the horizontal elastic sheet 322, is located in the fixed tube 23, the fixed tube 23 is further fixedly connected with a limiting ring 25, the limiting ring 25 is annular, coaxially aligned with the test hole 24, the limiting ring 25 is located at the side of the pressing rod 53, away from the horizontal elastic sheet 322, and the limiting ring 25 is further provided with a limiting slot 251 for the pressing rod 53 to pass through, so that the pressing rod 53 can vertically press the horizontal elastic sheet 322, and the end of the pressing rod 53, located at the side of the limiting ring 25, towards the circuit board 3, can ensure the sliding stability of the pressing rod 53 in the axial direction, and the risk of the pressing rod 53 sliding out of the limiting ring 25 is reduced.

[0047] The spring 52 is sleeved on the outer periphery of the pressing rod 53, one end of the spring 52 is abutted with the test button 51, and the other end is abutted with the side of the limiting ring 25, away from the test piece 32, when the test button 51 is pressed down, the test button 51 presses the spring 52 to store elastic potential energy, and the pressing rod 53 is abutted with the horizontal elastic sheet 322, when the test button 51 is released, the spring 52 releases the stored elastic potential energy to pop up the test button 51, so that the pressing rod 53 and the horizontal elastic sheet 322 are not abutted with each other in the normal state, and the risk of the horizontal elastic piece 322 being pressed by the test button 51 by mistake is reduced.

[0048] The working principle of the utility model is as follows:

[0049] When the test button 51 is pressed, the test button 51 drives the pressing rod 53 to move downwards, the end of the pressing rod 53 presses the horizontal elastic sheet 322 to move towards the circuit board 3, the contact part 3222 is abutted with the conductive metal sheet 21, the horizontal elastic sheet 322 is fixedly connected with the vertical connecting sheet 321, one end of the vertical connecting sheet 321 passes through the insertion slot 311 and is fixedly connected with the circuit board 3, so that the circuit board 3 is connected with the conductive metal sheet 21 through the test piece 32, and the simulated leakage current is manually generated.

[0050] When the test button 51 is released, the elastic potential energy stored by the spring 52 is released, and the test button 51 is ejected from the test hole 24 together with the pressing rod 53, the pressing rod 53 no longer presses the pressing part 3221, the contact part 3222 is popped up away from the conductive metal sheet 21, the horizontal elastic sheet 322 is disconnected with the conductive metal sheet 21, and then the simulation leakage current disappears; the test button assembly 5 presses the test piece 32 to make the circuit board 3 and the conductive metal sheet 21 connected, which is more convenient and efficient. When the leakage protection socket is produced, only the test piece 32 is inserted on the circuit board 3, the cover 4 is covered, and then the test button 51 can work normally, which is convenient for the assembly of the leakage protection socket and can be suitable for automatic production and assembly, and the production efficiency is improved.

[0051] The specific embodiments are only an explanation of the present application, and are not a limitation of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, and the modifications are protected by the patent law as long as they are within the scope of the present application.

Claims

1. A leakage protection socket that is easy to assemble, comprising a base (1) and a middle support (2), wherein the middle support (2) is located above the base (1) and is fastened to the base (1), a circuit board (3) is installed inside the base (1), and two conductive metal sheets (21) are respectively installed on both sides of the middle support (2), characterized in that, The utility model also comprises a test piece (32), one end of the test piece (32) is fixedly connected with the circuit board (3), the other end extends to the side of one conductive metal sheet (21) away from the circuit board (3), a test hole (24) is further formed in the middle layer support (2), a button assembly (5) is installed on the side of the test piece (32) away from the circuit board (3), one end of the button assembly (5) passes through the test hole (24), the other end is exposed outside the shell, and the sinking distance of the button assembly (5) pressing the test piece (32) is greater than the distance from the end of the test piece (32) to one conductive metal sheet (21).

2. The arc fault circuit interrupting outlet cover of claim 1, wherein, The test piece (32) comprises a vertical connecting piece (321), a vertical fixed block (31) is fixed on the circuit board (3), a slot (311) is formed in the fixed block (31) along the installation direction of the fixed block (31), and one end of the vertical connecting piece (321) passes through the slot (311) and is fixedly connected with the circuit board (3).

3. An arc fault circuit interrupter (AFCI) outlet socket according to claim 2, wherein, The test piece (32) further comprises a horizontal elastic piece (322), one end of the horizontal elastic piece (322) is fixedly connected with the vertical connecting piece (321), and the other end extends to the side of one conductive metal sheet (21) away from the circuit board (3); a limiting block (33) is fixed on the fixed block (31), the limiting block (33) is located on the side of the horizontal elastic piece (322) facing the circuit board (3), and the limiting block (33) is in the axial direction of the test hole (24).

4. An arc fault circuit interrupting (AFCI) outlet socket according to claim 3, wherein, The horizontal elastic piece (322) comprises a contact portion (3222) and a pressing portion (3221), the pressing portion (3221) abuts against the button assembly (5), the contact portion (3222) is located on the side of the conductive metal sheet (21) away from the circuit board (3), and the end of the contact portion (3222) is bent and extends towards the button assembly (5).

5. The arc fault circuit interrupting outlet cover of claim 3, wherein, A protrusion (3223) is installed on the side of the horizontal elastic piece (322) facing the circuit board (3).

6. The arc fault circuit interrupting outlet cover of claim 1, wherein, A fixed tube (23) coaxial with the test hole (24) is fixed on the middle layer support (2), the inner diameter of the fixed tube (23) is equal to the inner diameter of the test hole (24), a limiting ring (25) is fixed in the fixed tube (23) along the vertical axial direction of the fixed tube (23), and a limiting slot (251) for the button assembly (5) to fit through is formed in the limiting ring (25) in the axial direction.

7. An arc fault circuit interrupter (AFCI) outlet socket according to claim 6, wherein, The button assembly (5) comprises a pressing rod (53) and a test button (51), one end of the pressing rod (53) fits through the limiting slot (251), the other end is fixedly connected with the test button (51), and the end of the pressing rod (53) on the side of the test piece (32) is located on the side of the limiting ring (25) facing the test piece (32).

8. An arc fault circuit interrupter (AFCI) outlet socket according to claim 7, wherein, The button assembly (5) further comprises a spring (52), the spring (52) is sleeved on the outer periphery of the pressing rod (53), one end of the spring (52) abuts against the test button (51), and the other end abuts against the side of the limiting ring (25) away from the test piece (32).

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