Dielectric test electronic circuit protection structure

Abstract

The application discloses a dielectric test electronic circuit protection structure, and relates to the field of electric leakage protector, which comprises a shell, a circuit board and a plurality of electric connection plates arranged on the shell, the circuit board comprises a plurality of electric connection terminals, the electric connection terminals correspond to the electric connection plates one by one, a reset body is arranged on the shell, a plurality of electric connection sheets are fixedly arranged on the reset body, each electric connection sheet corresponds to an electric connection plate and is electrically connected, and the reset body and / or the circuit board are slidably connected to the shell in the direction that the reset body and the circuit board move away from or close to each other; when the reset body and the circuit board move close to each other, the electric connection sheets correspond to the electric connection terminals one by one and are electrically connected; when the reset body and the circuit board move away from each other, each electric connection sheet is separated from the corresponding electric connection terminal. The application has the effect of realizing normal detection on the dielectric performance between any two electric connection plates and guaranteeing the safety of the circuit board.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of leakage protector, in particular to a dielectric test electronic circuit protection structure. BACKGROUND

[0002] The leakage protector is mainly used to protect the equipment and the human body when the leakage fault occurs in the circuit and the human body is in danger of electric shock. The leakage protector is mainly divided into leakage protection relay, leakage protection switch and leakage protection socket according to the protection function and purpose.

[0003] In the related art, a leakage protector is mainly used in cooperation with a circuit breaker to realize automatic circuit breaking of a main circuit under a leakage condition. The leakage protector includes a shell, and an electric copper plate, a zero sequence current transformer, a comparator, a circuit board carrying a processing chip, a relay and the like arranged on the shell. The relay is a push rod type relay.

[0004] The electric copper plate is arranged in correspondence with the number of phases of the main circuit, and each electric copper plate is electrically connected with a corresponding conductor of the main circuit, and the main circuit is connected with the circuit breaker through all the electric copper plates. The circuit board is connected with the electric copper plate through a wiring terminal and an electric wire, and is in conduction with the main circuit, and is powered by the main circuit. The zero sequence current transformer surrounds the main circuit and senses the vector change of the current of the main circuit, and collects the signal of the vector change of the current of the main circuit, and then transmits the signal to the comparator. The positive phase input end of the comparator receives the current vector change signal sent by the zero sequence current transformer, and the negative phase input end of the comparator is connected with a reference voltage. When the main circuit leaks, the voltage signal collected by the comparator is greater than the reference voltage, the output end of the comparator outputs a voltage to the circuit board, and the circuit board controls the relay to push out the push rod. When used in cooperation with the circuit breaker, the push rod pushes the opening button of the circuit breaker, and the circuit breaker is disconnected, so as to realize automatic circuit breaking of the main circuit under the leakage condition.

[0005] In the related art, the circuit board of the leakage protector has been stably connected with the electric copper plate through the wiring terminal and the electric wire when the leakage protector is shipped or at the client end. During the electric detection, the detection of the dielectric performance can only test the dielectric performance of the line end of the leakage protector when the circuit breaker is tripped, and it is difficult to test the dielectric performance between any two electric copper plates. Since the power supply of the circuit board is collected from the main circuit, during the current dielectric test between the phases, a voltage of 1000V or more will be applied between the phases, which will directly cause the circuit board to be broken down, resulting in product scrap. SUMMARY

[0006] In order to improve the leakage protector in the related art, it is difficult to test the dielectric performance between any two power connection copper plates, and forced detection will cause the circuit board to be broken, a dielectric test electronic circuit protection structure is provided.

[0007] The dielectric test electronic circuit protection structure provided by the application adopts the following technical scheme:

[0008] A dielectric test electronic circuit protection structure comprises a shell, the shell is provided with a circuit board and a plurality of power connection plates, the circuit board comprises a plurality of power connection terminals, the power connection terminals correspond to the power connection plates one by one, the shell is provided with a reset body, a plurality of power connection pieces are fixedly arranged on the reset body, each power connection piece corresponds to a power connection plate and is electrically connected, and the reset body or the circuit board is slidably connected to the shell along the direction in which the reset body and the circuit board move away from or approach each other.

[0009] When the reset body and the circuit board approach each other, the power connection pieces correspond to the power connection terminals one by one and are in electrical contact; when the reset body and the circuit board move away from each other, each power connection piece is separated from the corresponding power connection terminal.

[0010] By adopting the above technical scheme, when the dielectric performance between any two power connection plates is tested, the reset body and / or the circuit board can be slid to separate the power connection pieces from the corresponding power connection terminals, so that the dielectric performance between the two power connection plates can be detected more safely and the circuit board will not be broken; after the detection is completed, the reset body and / or the circuit board can be slid again to make the reset body and the circuit board approach each other, the power connection pieces correspond to the power connection terminals one by one and are in electrical contact, and normal leakage protection can be performed. In this way, the dielectric performance between any two power connection plates can be normally detected, and the safety of the circuit board can be ensured.

[0011] Preferably, the circuit board is fixed to the shell, and the reset body is slidably arranged on the shell along the direction in which the power connection terminals move away from or approach each other.

[0012] By adopting the above technical scheme, the circuit board is fixed to the shell, and the reset body is slidably arranged on the shell, which helps to ensure the safety of the circuit board.

[0013] Preferably, a protrusion is formed on the reset body, a clamping groove is formed in the shell, and the protrusion and the clamping groove are clamped and matched.

[0014] When the power connection pieces are in electrical contact with the power connection terminals, the protrusion and the clamping groove are clamped.

[0015] By adopting the above technical scheme, the protrusion on the reset body and the clamping groove are clamped and matched, which helps to ensure the stability of the electrical contact between the power connection pieces and the power connection terminals.

[0016] Preferably, the protruding block is provided with a guide surface on both sides in the sliding direction of the reset body, and the two guide surfaces are used for guiding the block to be clamped into and out of the clamping groove.

[0017] By adopting the above technical scheme, when the closing contact piece and the contact terminal are pressed, the reset body is pressed, and under the guidance of the guide surface, the protruding block will be more easily clamped into the clamping groove; when the contact piece and the contact terminal are disconnected, the reset body is slid, and under the guidance of the guide surface, the protruding block will be more easily out of the clamping groove. Thus, it is helpful to improve the convenience of clamping and unclamping the protruding block into and out of the clamping groove.

[0018] Preferably, a lever support is arranged on the shell, the middle part of the lever support is hinged to the shell, one side of the reset body is formed with a support plate, and one end of the lever support abuts against the support plate close to one side of the circuit board.

[0019] By adopting the above technical scheme, when the contact piece and the contact terminal are disconnected, the operator can press one end of the lever support away from the support plate, which can more easily make the protrusion of the reset body out of the clamping groove, and release the connection between the contact piece and the contact terminal, thereby improving the convenience of disconnecting the contact piece and the contact terminal.

[0020] Preferably, the support plate is arranged on the opposite sides of the reset body, the line between the two support plates is perpendicular to the sliding direction of the reset body, the lever support corresponds to the support plate one by one, the end of the two lever supports away from the corresponding support plate is close to each other, the shell is slid in the direction away from or close to the circuit board, the disconnection button is arranged on the side of the two lever supports away from the circuit board, and the disconnection button abuts against the end of the two lever supports away from the corresponding support plate.

[0021] By adopting the above technical scheme, in actual application, pressing the disconnection button can push the side of the two lever supports close to each other, and make the two lever supports synchronously push the corresponding support plate, so that the protrusion of the reset body is out of the clamping groove, and the connection between the contact piece and the contact terminal is released, thereby helping to ensure the stability of the movement of the reset body away from the circuit board, and further improving the convenience of disconnecting the contact piece and the contact terminal.

[0022] Preferably, a resilient member is arranged between the reset body and the shell, the extension direction of the resilient member is parallel to the sliding direction of the reset body, and the resilient member provides a pushing force for the movement and movement trend of the reset body away from the circuit board.

[0023] By adopting the technical scheme, on one hand, when the lever support pushes the reset body to move away from the circuit board, the elastic member can provide a boost force, reduce the force required for the protrusion of the reset body to disengage from the clamping groove, and improve the convenience of disengaging the protrusion from the clamping groove; on the other hand, after the protrusion disengages from the clamping groove, the reset body is pushed to move by the elastic member, and the reset body remains away from the circuit board, reducing the situation that the contact piece and the contact terminal are accidentally closed and break the circuit board during the dielectric performance test between the two contact boards, and helping to ensure the normal test of the dielectric performance between the two contact boards.

[0024] Preferably, a push block is arranged to slide on the shell, and a push rod for pushing the disconnection button of the circuit breaker is fixedly arranged on the push block.

[0025] When the lever support pushes the reset body to slide away from the circuit board, the push block and the push rod are pushed by the linkage mechanism.

[0026] By adopting the technical scheme, when the dielectric performance between the two contact boards is tested, the disconnection button is pressed, the disconnection button drives the two lever supports to move, and the reset body moves away from the circuit board, at the same time, the lever support pushes the push block and the push rod through the linkage mechanism, and then pushes the disconnection button of the circuit breaker, so that the circuit breaker disconnects the main line, and the safe performance of the dielectric performance test between the two contact boards is ensured.

[0027] Preferably, a protrusion is formed on the disconnection button, an intercepting plate is formed on the shell for cooperating with the protrusion and intercepting the protrusion, and a guide surface for guiding the protrusion to pass over the intercepting plate is arranged on both sides of the protrusion in the sliding direction of the disconnection button.

[0028] When the disconnection button is not pressed and the contact piece of the reset body is in electrical contact with the contact terminal, the protrusion is located on the side of the intercepting plate away from the circuit board; when the disconnection button is pressed and drives the lever support and the linkage mechanism to cause the push block and the push rod to push out, the protrusion is located on the side of the intercepting plate close to the circuit board and is intercepted by the intercepting plate.

[0029] By adopting the technical scheme, in actual application, the disconnection button is pressed, the disconnection button drives the two lever supports to move, and the lever support pushes the push block and the push rod through the linkage mechanism. At this time, the protrusion is located on the side of the intercepting plate close to the circuit board and is intercepted by the intercepting plate, the disconnection button, the lever support, the linkage mechanism, the push block and the push rod are in a stable state, the push rod continuously abuts against the disconnection button of the circuit breaker, the situation that the circuit breaker is accidentally closed is reduced, and the normal performance of the dielectric performance test between the two contact boards is ensured.

[0030] Preferably, the power connection terminal comprises a plug-in piece, the power connection piece comprises two clamping segments; when the power connection terminal is in contact with the power connection piece, the plug-in piece is inserted between the two clamping segments, and the two clamping segments clamp the plug-in piece.

[0031] By using the above technical scheme, when the power connection terminal is in electrical contact with the power connection piece, the plug-in piece is inserted between the two clamping segments and clamped by the two clamping segments, which helps to ensure the stability of the electrical contact between the power connection terminal and the power connection piece.

[0032] In summary, the present application has at least one of the following beneficial technical effects:

[0033] 1. When testing the dielectric property between two power connection plates, the reset body and / or the circuit board are connected to the shell by sliding in the direction of moving away from or approaching each other, so that the two power connection plates are moved away from each other to ensure the safety of the circuit board and normal detection of the dielectric property between any two power connection plates.

[0034] 2. The protrusion on the reset body is matched with the clamping groove, the elastic member provides a pushing force to the reset body to move away from the circuit board and to move towards the circuit board, and the protrusion of the disconnecting button is matched with the intercepting plate, so as to ensure the stability of the electrical contact and the disconnection between the power connection piece and the power connection terminal, and to ensure the stability of the residual current protector under normal working and dielectric property testing.

[0035] 3. The protrusion of the disconnecting button is matched with the intercepting plate, so that the push rod stably and continuously abuts against the disconnecting button of the circuit breaker, ensuring the stability of the circuit breaker in the disconnected state, reducing the accidental closing of the circuit breaker, and ensuring the normal testing of the dielectric property between the two power connection plates. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a perspective view of the overall structure of the dielectric test electronic circuit protection structure of the embodiment;

[0037] Figure 2 It is an exploded view of the shell and the reset body structure of the embodiment;

[0038] Figure 3 It is Figure 2 It is an enlarged view of part A, mainly showing the structure of the reset body and the circuit board;

[0039] Figure 4 It is a schematic view of the reset body structure of the embodiment;

[0040] Figure 5 It is a schematic view of the structure of the power connection plate, the power connection piece and the power connection terminal of the embodiment;

[0041] Figure 6 This is a schematic diagram illustrating the main assembly structure of the junction piece in this embodiment;

[0042] Figure 7 This is a schematic diagram illustrating the main structure of the driving component in this embodiment;

[0043] Figure 8 This is an exploded view illustrating the structure of the drive component, which is the main feature of this embodiment.

[0044] Figure 9 This is a schematic diagram illustrating the push block and linkage structure, which are the main features of this embodiment.

[0045] Figure 10 This is a schematic diagram illustrating the main structure of the pressure frame in this embodiment.

[0046] Reference numerals: 1. Housing; 11. First half-shell; 12. Second half-shell; 13. Mounting bracket; 131. Circuit board; 1311. Electrical terminal; 1312. Connecting piece; 132. Electrical plate; 133. First slide groove; 134. Slot; 135. Groove; 136. Second slide groove; 137. Clearance groove; 138. Intercepting plate; 2. Reset body; 21. Protrusion; 211. Guide surface; 22. Support plate; 23. Stabilizing column; 24. Compression spring; 25. Assembly column; 26. Wire clamp; 3. Electrical piece; 31. Limiting groove; 32. Clamping piece 4. Drive assembly; 41. Lever bracket; 42. Disconnect button; 43. Extension plate; 431. Protrusion; 4311. Guide surface; 5. Push block; 51. Push rod; 52. Stepped groove; 6. Linkage mechanism; 61. Ejection spring; 62. Hinge rod; 621. Waist-shaped hole; 63. Pressure frame; 631. Connecting rod; 632. Anti-detachment block; 64. First return spring; 65. Hinge frame; 651. Abutment rod; 652. Linkage bracket; 66. Second return spring; 7. Side frame; 71. Third slide groove; 72. Clearance opening; 73. Fourth slide groove. Detailed Implementation

[0047] The present application will be further described in detail below with reference to the accompanying drawings.

[0048] In related technologies, residual current devices (RCDs) are usually used in conjunction with circuit breakers. After detecting leakage in the main line, the circuit breaker is tripped in time, and the main line is disconnected to reduce the risk of electric shock.

[0049] This application discloses a protection structure for dielectric testing electronic circuits.

[0050] Reference Figure 1 and Figure 2The utility model relates to a dielectric test electronic circuit protection structure, in particular to a dielectric test electronic circuit protection structure of leakage protector, which includes a shell 1, the shell 1 is plastic shell, the shell 1 includes first half shell 11, second half shell 12 and mounting bracket 13 fixedly installed in first half shell 11 and second half shell 12, and first half shell 11 and second half shell 12 can be connected by clamping or screw locking. The mounting bracket 13 is fixed with circuit board 131 and multiple electric connection plates 132, wherein the electric connection plate 132 is made of copper. The circuit board 131 is vertically fixed with electric connection terminals 1311, and the electric connection terminals 1311 are located on one side of the circuit board 131 and are arranged at intervals along the side. The mounting bracket 13 is slidably provided with a reset body 2 in the direction perpendicular to the circuit board 131, and the side of the reset body 2 away from the circuit board 131 is exposed to the outside of the second half shell 12. The side of the reset body 2 close to the circuit board 131 is fixedly provided with multiple electric contact pieces 3, the electric contact pieces 3 are towards the side of the circuit board 131, and the electric contact pieces 3 and the electric connection plates 132 are one-to-one corresponding and electrically connected, and the electric contact pieces 3 and the electric connection terminals 1311 are one-to-one corresponding. Moreover, the mounting bracket 13 is also provided with a driving assembly 4 for pushing the reset body 2 to move away from the circuit board 131, and the mounting bracket 13 is also slidably provided with a push block 5, the push block 5 is fixedly provided with a push rod 51 for pushing the breaker trip button, and the mounting bracket 13 is also provided with a linkage mechanism 6, and the driving assembly 4 drives the push block 5 to slide through the linkage mechanism 6.

[0051] When the leakage protector normally protects the main circuit, the electric contact pieces 3 and the electric connection terminals 1311 are one-to-one corresponding and electrically connected. When the dielectric performance between the two electric connection plates 132 is detected, the reset body 2 is pushed by the driving assembly 4 to slide away from the circuit board 131, so that the electric contact pieces 3 and the electric connection terminals 1311 are far away from each other and disconnected, and at the same time, the push block 5 and the push rod 51 are driven by the linkage mechanism 6 to disconnect the circuit breaker. After the detection is completed, the reset body 2 can be pressed to make the electric contact pieces 3 and the electric connection terminals 1311 corresponding contact.

[0052] Specifically, referring to Figure 3 and Figure 4The first sliding groove 133 is arranged on the mounting frame 13 along the sliding direction of the reset body 2, and the reset body 2 is embedded in the first sliding groove 133 and is in sliding cooperation with the first sliding groove 133. The length direction and the thickness direction of the reset body 2 are perpendicular to the sliding direction of the reset body 2, one side of the reset body 2 in the thickness direction is formed with a protruding block 21, the protruding block 21 is disc-shaped, and guide surfaces 211 are formed on both sides of the protruding block 21 in the sliding direction of the reset body 2, a clamping groove 134 is arranged on the mounting frame 13, and one side of the clamping groove 134 away from the circuit board 131 is open, and the protruding block 21 is guided by the guide surfaces 211 to be clamped into and out of the clamping groove 134 from the side of the clamping groove 134 away from the circuit board 131. Both sides of the reset body 2 in the length direction are provided with supporting plates 22, one side of each supporting plate 22 close to the circuit board 131 is formed with a stabilizing column 23, recesses 135 are arranged on the mounting frame 13 corresponding to the two stabilizing columns 23, and elastic members are arranged between the two recesses 135 and the corresponding stabilizing columns 23, the elastic members are compression springs 24, one end of the compression spring 24 is embedded in the recess 135, and the other end of the compression spring 24 is sleeved on the stabilizing column 23 and abuts against the supporting plate 22. In actual application, the reset body 2 is pressed, the protruding block 21 is clamped into the clamping groove 134 under the guidance of the guide surfaces 211, at this time, the electrically-conductive sheet 3 and the electrically-conductive terminal 1311 are in stable electrical contact, when the driving assembly 4 drives the reset body 2 to slide away from the circuit board 131, the protruding block 21 is guided out of the clamping groove 134 under the guidance of the guide surfaces 211, at this time, the electrically-conductive sheet 3 and the electrically-conductive terminal 1311 are disconnected, and under the pushing and supporting of the two compression springs 24, the electrically-conductive sheet 3 and the electrically-conductive terminal 1311 are in a stable disconnected state.

[0053] Referring to Figure 5 and Figure 6 , the length direction of the reset body 2 is parallel to the direction in which the electrically-conductive terminals 1311 are arranged in sequence and at intervals, a plurality of assembly columns 25 are formed in sequence and at intervals on one side of the reset body 2 close to the circuit board 131 along the direction of the reset body 2, the electrically-conductive sheets 3 correspond to the assembly columns 25 one by one and are installed on the assembly columns 25, the structures of each electrically-conductive sheet 3 and the electrically-conductive terminal 1311 and the installation structure of the electrically-conductive sheet 3 on the assembly column 25 are consistent, and now an arbitrary group of electrically-conductive sheets 3 and assembly columns 25 will be described.

[0054] The contact piece 3 penetrates into the assembly column 25 from the side close to the circuit board 131 along the sliding direction of the reset body 2, the middle part of the contact piece 3 forms a limiting groove 31, the side wall of the assembly column 25 is provided with a wire clamp 26, the wire clamp 26 is clamped into the assembly column 25, and part of the wire clamp 26 is clamped into the limiting groove 31, and the contact piece 3 is fixed on the assembly column 25. Moreover, the middle part of each contact piece 3 is connected to the corresponding contact board 132 through the wire and the gasket. At the same time, the contact piece 3 includes two clamping segments 32 close to the circuit board 131, the middle parts of the two clamping segments 32 are bent towards each other and abut against each other, and the ends of the two clamping segments 32 close to the circuit board 131 are inclined towards the side away from each other, and the contact terminal 1311 includes a plug-in piece 1312, which is in plug-in cooperation with the two clamping segments 32. In actual installation, the contact piece 3 is first penetrated into the assembly column 25, and the wire clamp 26 is clamped into the assembly column 25, so that part of the wire clamp 26 is clamped into the limiting groove 31, thereby stably fixing the contact piece 3 on the assembly column 25. When the contact terminal 1311 is in electrical contact with the contact piece 3, the plug-in piece 1312 will be inserted between the two clamping segments 32 and clamped by the two clamping segments 32, thereby ensuring the stability of the electrical contact between the contact terminal 1311 and the contact piece 3.

[0055] Referring to Figure 7 and Figure 8 , the driving assembly 4 includes a lever support 41, the middle part of the lever support 41 is hinged to the mounting frame 13, and one is arranged on each side of the lever support 41 in the length direction of the reset body 2, one end of the two lever supports 41 is close to each other, and the ends of the two lever supports 41 away from each other abut against the side of the two supporting plates 22 close to the circuit board 131. The driving assembly 4 further includes a disconnecting button 42, the mounting frame 13 is provided with a second sliding groove 136 along the sliding direction of the reset body 2, the disconnecting button 42 is embedded in the second sliding groove 136 and slides along the sliding direction of the reset body 2, and the disconnecting button 42 is located between the two lever supports 41, the side of the disconnecting button 42 close to the circuit board 131 abuts against the side of the two lever supports 41 away from the circuit board 131, and the side of the disconnecting button 42 away from the circuit board 131 penetrates out of the second half shell 12 (see Figure 1 ). At the same time, the disconnecting button 42 is integrally formed with an extension plate 43, the extension plate 43 is bent and extends towards the circuit board 131 along the sliding direction of the disconnecting button 42, the mounting frame 13 is provided with a avoiding groove 137 corresponding to the extension plate 43, the side of the mounting frame 13 located in the avoiding groove 137 is formed with an intercepting plate 138, the extension plate 43 extends into the avoiding groove 137, and the side of the extension plate 43 close to the intercepting plate 138 is integrally formed with a protrusion 431, the two sides of the protrusion 431 in the sliding direction of the disconnecting button 42 are provided with a smooth surface 4311 for guiding the protrusion 431 to pass over the intercepting plate 138.

[0056] When the electrically-conductive piece 3 is in normal electrical contact with the electrically-conductive terminal 1311, the protrusion 431 is located on the side of the intercepting plate 138 away from the circuit board 131. When the dielectric property between the two electrically-conductive plates 132 is tested, the disconnection button 42 is pressed to drive the ends of the two lever supports 41 that are close to each other to move toward the side of the circuit board 131, and the ends of the two lever supports 41 that are away from each other abut against the two supporting plates 22 and push the reset body 2 to slide away from the circuit board 131, so that the protrusion 21 of the reset body 2 exits the clamping groove 134; at the same time, the protrusion 431 on the extension plate 43 will pass the intercepting plate 138 under the guidance of the guide surface 4311; when the disconnection button 42 is released, the protrusion 431 is intercepted by the intercepting plate 138 to move away from the circuit board 131, thereby preventing the disconnection button 42, the lever supports 41 and the compression spring 24 from resetting toward the side of the circuit board 131. When the electrically-conductive piece 3 is in electrical contact with the electrically-conductive terminal 1311 by pressing the reset body 2, the two supporting plates 22 push the ends of the two lever supports 41 that are away from each other to move toward the side of the circuit board 131, and the ends of the two lever supports 41 that are close to each other jointly push the disconnection button 42 to reset away from the circuit board 131, and the protrusion 431 on the extension plate 43 will pass the intercepting plate 138 away from the circuit board 131 under the guidance of the guide surface 4311.

[0057] Next, referring to Figure 9 and Figure 10 , the mounting frame 13 includes a side frame 7, the side frame 7 is provided with a third sliding groove 71, the third sliding groove 71 is perpendicular to the sliding direction of the reset body 2, a part of the push block 5 is embedded in the third sliding groove 71 and is in sliding cooperation with the third sliding groove 71 along the direction of the third sliding groove 71, the push rod 51 is fixed to the side of the push block 5 in the sliding direction of the push block 5 and is arranged along the sliding direction of the push block 5, and the side frame 7 is provided with a clearance 72 corresponding to the position of the push rod 51. The linkage mechanism 6 includes an ejection spring 61, the ejection spring 61 is located on the side of the push block 5 away from the push rod 51, and the two ends of the ejection spring 61 abut against the side frame 7 and the side of the push block 5 away from the push rod 51, respectively.

[0058] The linkage mechanism 6 further comprises a hinged rod 62, a pressing frame 63, a first reset spring 64, a hinged frame 65, and a second reset spring 66. The middle part of the hinged rod 62 is hinged to the side frame 7, one end of the hinged rod 62 is located at the end of the lever support 41 away from the disconnecting button 42, and the hinged rod 62 abuts against the side of the lever support 41 away from the circuit board 131. The side frame 7 located at the side of the push block 5 away from the avoiding opening 72 is further provided with a fourth sliding groove 73, the fourth sliding groove 73 is arranged along the sliding direction of the reset body 2, and the pressing frame 63 is partially embedded in the fourth sliding groove 73 and slidably matched with the fourth sliding groove 73 along the running direction of the fourth sliding groove 73. The side of the pressing frame 63 in the sliding direction is fixedly provided with a connecting rod 631, the connecting rod 631 is arranged along the sliding direction of the pressing frame 63, the connecting rod 631 is close to the end of the hinged rod 62 away from the lever support 41, the end of the hinged rod 62 away from the lever support 41 is provided with a waist-shaped hole 621, the connecting rod 631 penetrates through the waist-shaped hole 621, and the end of the connecting rod 631 away from the pressing frame 63 is formed with an anti-extraction block 632 for preventing the connecting rod 631 from being extracted out of the waist-shaped hole 621. The axial direction of the first reset spring 64 is parallel to the running direction of the fourth sliding groove 73, and the two ends of the first reset spring 64 are respectively abutted against the side frame 7 and the partial pressing frame 63, and the first reset spring 64 provides a force to the pressing frame 63 moving towards the side of the hinged rod 62.

[0059] The hinged frame 65 is located at the side of the pressing frame 63 away from the connecting rod 631, one side of the hinged frame 65 is hinged to the position of the side frame 7 close to the avoiding opening 72, and the push block 5 is located between the hinged rod 62 and the hinged frame 65. The side of the push block 5 towards the push rod 51 is provided with a stepped groove 52, the stepped groove 52 is located at the side of the push block 5 close to the hinged frame 65, and the hinged frame 65 is rotatably provided with an abutting rod 651, the abutting rod 651 is embedded in the stepped groove 52 and abuts against the side wall of the stepped groove 52. The two ends of the second reset spring 66 are respectively abutted against the side frame 7 and the side of the hinged frame 65 away from the abutting rod 651, and the second reset spring 66 provides a force to the hinged frame 65 to maintain the abutting rod 651 abutting against the side wall of the stepped groove 52. Furthermore, the side of the hinged frame 65 away from the hinged rod 62 towards the pressing machine is formed with a linkage support 652.

[0060] When the disconnection button 42 is pressed, the two lever supports 41 are moved towards the circuit board 131, and one of the lever supports 41 pushes the hinged rod 62, which in turn pushes the pressing frame 63 towards the hinged frame 65, and compresses the first return spring 64. At the same time, the pressing frame 63 abuts against the linkage support 652, and drives the hinged frame 65 to rotate. At this time, the abutment rod 651 is withdrawn from the stepped slot 52, and under the push of the ejection spring 61, the push block 5 and the push rod 51 are moved towards the avoiding opening 72, and the push rod 51 extends out of the avoiding opening 72. Then, when the disconnection button 42 is released, the protrusion 431 is intercepted by the intercepting plate 138 and moved away from the circuit board 131, and the lever supports 41 are in a state of continuous support for the hinged rod 62, i.e., the hinged frame 65 and the abutment rod 651 are in a state of continuous release for the push block 5, and the push block 5 and the push rod 51 are difficult to recover and remain in the state of not being pushed out.

[0061] It should be noted that, to recover the push block 5 and the push rod 51 to the state of not being pushed out, the reset body 2 can be pressed to make the electrical contact piece 3 correspondingly contact the electrical contact terminal 1311, and the two lever supports 41 are pushed by the reset body 2 to pop out the disconnection button 42. Under the action of the first return spring 64 and the second return spring 66, the pressing frame 63, the hinged frame 65, and the hinged rod 62 are recovered to the state of the push block 5 and the push rod 51 not being pushed out. At this time, the staff can move the push block 5 and the push rod 51 towards the ejection spring 61 and compress the ejection spring 61. When the stepped slot 52 moves to the position of the abutment rod 651, the hinged frame 65 and the abutment rod 651 are rotated again under the action of the second return spring 66, the abutment rod 651 is embedded in the stepped slot 52 and abuts against the side wall of the stepped slot 52, and the push block 5 and the push rod 51 are recovered to the state of not being pushed out. The pressing frame 63 and the hinged rod 62 are recovered to the state of the push block 5 and the push rod 51 not being pushed out under the push of the hinged frame 65.

[0062] As to how to move the push block 5 and the push rod 51 to recover them to the state of not being pushed out, an insulating rod can be used to push the push block 5 and the push rod 51 to reset, or an insulating piece can be used to push the push block 5 and the push rod 51 to reset temporarily by opening the shell 1. The simple way can achieve the purpose, and thus no further description is given.

[0063] The implementation principle of the dielectric test electronic circuit protection structure in the embodiment of the present application is as follows:

[0064] Under the normal leakage protection of the main circuit, the electrical contact piece 3 corresponds to and electrically contacts the electrical contact terminal 1311, the compression spring 24 is in a compressed state, the protrusion 21 is clamped into the clamping groove 134, and the main circuit provides power to the circuit board 131.

[0065] When detecting the dielectric property between the two phases of the two contact plates 132, the worker can press the disconnecting button 42, which will drive the two lever supports 41 to pry the reset body 2 and move it away from the circuit board 131, so that the protrusion 21 will exit the clamping slot 134, the contact piece 3 will be separated from the contact terminal 1311, the intercepting plate 138 will abut against the protrusion 431 and intercept the movement of the disconnecting button 42 away from the circuit board 131; at the same time, one of the lever supports 41 will drive the hinged rod 62 to rotate and in turn drive the pressing frame 63 and the hinged frame 65 to move, and the first reset spring 64 and the second reset spring 66 will be compressed; at this time, the hinged rod 62 will exit the stepped slot 52, and under the action of the ejecting spring 61, the push block 5 and the push rod 51 will be pushed, and the push rod 51 will extend out of the avoiding opening 72. Then, the worker can safely detect the dielectric property between the two phases of the two contact plates 132.

[0066] After the detection is completed, the reset body 2 is pressed, the contact piece 3 will correspond to and electrically contact with the contact terminal 1311, and will drive the two lever supports 41 to pry the disconnecting button 42 to move away from the circuit board 131; at the same time, the hinged rod 62, the pressing frame 63 and the hinged frame 65 will be restored to the state before the push block 5 and the push rod 51 are pushed out under the action of the first reset spring 64 and the second reset spring 66, at this time, the worker can move the push block 5 and the push rod 51 to move to the side of the ejecting spring 61 and compress the ejecting spring 61; when the stepped slot 52 moves to the abutting rod 651, the hinged frame 65 and the abutting rod 651 will rotate again under the action of the second reset spring 66, the abutting rod 651 will be embedded in the stepped slot 52 and abut against the side wall of the stepped slot 52, and the push block 5 and the push rod 51 will be restored to the state before they are pushed out, and the pressing frame 63 and the hinged rod 62 will be restored to the state before the push block 5 and the push rod 51 are pushed out under the pushing of the hinged frame 65.

[0067] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A dielectric test electronic circuit protection structure, comprising a shell (1), a circuit board (131) and a plurality of power connection plates (132) arranged on the shell (1), the circuit board (131) comprising a plurality of power connection terminals (1311), the power connection terminals (1311) corresponding to the power connection plates (132) one by one, characterized in that: the power connection terminals (1311) are arranged on the circuit board (131) in a staggered manner, and the power connection terminals (1311) are arranged in a staggered manner on the circuit board (131) in a staggered manner. The shell (1) is provided with a reset body (2), a plurality of electrically connected pieces (3) are fixedly arranged on the reset body (2), each electrically connected piece (3) corresponds to an electrically connected terminal (1311) and is electrically connected, and the reset body (2) and / or the circuit board (131) are slidably connected to the shell (1) in a direction away from or close to each other; When the reset body (2) and the circuit board (131) are close to each other, the electrically connected pieces (3) correspond to the electrically connected terminals (1311) and are electrically connected; when the reset body (2) and the circuit board (131) are away from each other, each electrically connected piece (3) is separated from the corresponding electrically connected terminal (1311); The circuit board (131) is fixed to the shell (1), and the reset body (2) is slidably arranged on the shell (1) in a direction away from or close to the electrically connected terminal (1311); The reset body (2) is formed with a protrusion (21), the shell (1) is provided with a clamping groove (134), and the protrusion (21) and the clamping groove (134) are clamped and matched; When the electrically connected piece (3) is electrically connected with the electrically connected terminal (1311), the protrusion (21) and the clamping groove (134) are clamped; The protrusion (21) is provided with a guide surface (211) on both sides in the sliding direction of the reset body (2), and the two guide surfaces (211) are used for guiding the protrusion (21) to be clamped into and out of the clamping groove (134); The shell (1) is provided with a lever support (41), the middle part of the lever support (41) is hinged to the shell (1), one side of the reset body (2) is formed with a support plate (22), and one end of the lever support (41) abuts against the support plate (22) on the side close to the circuit board (131); The support plate (22) is arranged on the opposite sides of the reset body (2), the line between the two support plates (22) is perpendicular to the sliding direction of the reset body (2), the lever support (41) corresponds to the support plate (22), the end parts of the two lever supports (41) away from the corresponding support plates (22) are close to each other, and the shell (1) is slidably provided with a disconnecting button (42) in a direction away from or close to the circuit board (131), the disconnecting button (42) is located on the side away from the circuit board (131) of the two lever supports (41), and the disconnecting button (42) abuts against the end parts of the two lever supports (41) away from the corresponding support plates (22); The shell (1) is slidably provided with a push block (5), the push block (5) is fixedly provided with a push rod (51) for pushing the disconnecting button of the circuit breaker, the shell (1) is further provided with a linkage mechanism (6), and the lever support (41) drives the push block (5) to slide through the linkage mechanism (6); When the lever support (41) drives the reset body (2) to slide to the side away from the circuit board (131), the push block (5) and the push rod (51) are pushed through the linkage mechanism (6). The mounting frame (13) is provided with a first sliding groove (133) along the sliding direction of the reset body (2), and the reset body (2) is embedded in the first sliding groove (133) and is in sliding cooperation with the first sliding groove (133).

2. The dielectric test electronic circuit protection structure of claim 1, wherein: The reset body (2) and the shell (1) are provided with an elastic member in abutting contact, the elastic member is in extension parallel to the sliding direction of the reset body (2), and the elastic member provides a pushing force for the movement and movement trend of the reset body (2) to the side away from the circuit board (131).

3. The dielectric test electronic circuit protection structure of claim 1, wherein: The disconnecting button (42) is provided with a protrusion (431), the shell (1) is provided with an intercepting plate (138) for cooperating with the protrusion (431) and intercepting the protrusion (431), and the protrusion (431) is provided with a guide surface (4311) on both sides in the sliding direction of the disconnecting button (42) for guiding the protrusion (431) to pass through the intercepting plate (138); When the disconnecting button (42) is not pressed and the reset body (2) is in electrical contact with the electrical contact terminal (1311), the protrusion (431) is located on the side of the intercepting plate (138) away from the circuit board (131); when the disconnecting button (42) is pressed and drives the lever support (41) and the linkage mechanism (6) to cause the push block (5) and the push rod (51) to push out, the protrusion (431) is located on the side of the intercepting plate (138) close to the circuit board (131) and is intercepted by the intercepting plate (138).

4. The dielectric test electronic circuit protection structure of claim 1, wherein: The electrical contact terminal (1311) comprises a plug-in piece (1312), and the electrical contact piece (3) comprises two clamping segments (32); when the electrical contact terminal (1311) is in contact with the electrical contact piece (3), the plug-in piece (1312) penetrates between the two clamping segments (32), and the two clamping segments (32) clamp the plug-in piece (1312).

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