An electronic leakage circuit breaker

Abstract

The present application relates to the technical field of circuit breakers, and discloses an electronic leakage circuit breaker, which includes a housing and a circuit breaker module, a leakage protection module, an operating mechanism and an anti-mistaken touch mechanism arranged in the housing, wherein the operating mechanism includes a handle, a linkage component arranged between the handle and the circuit breaker module, the linkage component can move with the handle to control the opening and closing of the circuit breaker module, the leakage protection module includes a release, and the anti-mistaken touch mechanism includes an anti-touch block slidably arranged on the housing, a reset member for driving the anti-touch block to move out of the housing, a movable plate and a lock rotatably arranged on the housing, a limit rod fixed on the movable plate toward the side of the lock, the limit rod abuts against one side of the lock, a through hole is opened on the movable plate for the anti-touch block to extend into after being pressed down, and the push rod of the release is inserted into the movable plate and can control the rotation of the movable plate. In the present application, when the anti-touch block moves out of the housing, the handle cannot control the closing of the circuit breaker module, and the invention has the effect of preventing mistaken touch and high safety.

Description

Technical Field

[0001] The present application relates to the technical field of circuit breakers, and in particular to an electronic leakage circuit breaker. Background Art

[0002] The leakage circuit breaker, also known as the leakage switch or leakage protector, mainly plays the role of overload and short circuit protection. It can also be used for infrequent line switching under normal circumstances. It has the advantages of strong current interrupting ability and good action characteristics.

[0003] In the related art, a Chinese patent with announcement number CN206628427U discloses a leakage circuit breaker, which includes a housing, an operating mechanism, an arc extinguishing hood, an electromagnetic system, a terminal block and a leakage component. The housing includes a middle housing and a circuit breaker housing and a leakage housing arranged on both sides of the middle housing. The operating mechanism, the electromagnetic system and the arc extinguishing hood are arranged between the circuit breaker housing and the middle housing, and the leakage component is arranged between the leakage housing and the middle housing. The leakage component includes a zero-sequence transformer and a leakage release. A square through hole is arranged on the middle housing, and the zero-sequence transformer is installed through the square through hole.

[0004] However, during use of the above-mentioned leakage circuit breaker, the handle of the operating mechanism can be rotated arbitrarily, which is prone to accidental touch, resulting in the leakage circuit breaker being mistakenly closed, and needs to be improved. Summary of the invention

[0005] In order to reduce the risk of the handle being accidentally touched to control the circuit breaker module to incorrectly close, the present application provides an electronic leakage circuit breaker.

[0006] The electronic leakage circuit breaker provided in this application adopts the following technical solution:

[0007] An electronic leakage circuit breaker comprises a housing and a circuit breaker module, a leakage protection module and an operating mechanism arranged in the housing, wherein the operating mechanism comprises a handle and a linkage component arranged between the handle and the circuit breaker module, wherein the linkage component can move with the handle to control the opening and closing of the circuit breaker module, wherein the leakage protection module comprises a tripper and an anti-mistaken touch mechanism, wherein the anti-mistaken touch mechanism comprises an anti-touch block slidably arranged on the housing, a reset member for driving the anti-touch block to move out of the housing, a movable plate and a lock buckle rotatably arranged on the housing, and a fixed A limit rod is provided on the side of the movable plate toward the lock, and the limit rod abuts against one side of the lock. A through hole is provided on the movable plate for the anti-touch block to extend into after being pressed down, and the push rod of the releaser is passed through the movable plate and can control the rotation of the movable plate; when the anti-touch block is pressed down, the lock can limit the linkage component, and the handle can control the opening and closing of the circuit breaker module; when the anti-touch block moves up, the limit of the linkage component by the lock is released, and the handle can only control the opening of the circuit breaker module, but cannot control the closing of the circuit breaker module.

[0008] By adopting the above technical solution, when the anti-touch block is pressed down until it is aligned with the through hole, the movable plate will rotate to one side under the action of the push rod of the release, so that the anti-touch block extends into the through hole, and the lock catches up with the limit rod and turns to the state of limiting the linkage assembly. At this time, the handle can freely control the opening and closing of the circuit breaker module. When the push rod of the release controls the movable plate to turn away from the anti-touch block, the anti-touch block will move out of the housing under the action of the reset member, and the lock catches up with the limit rod and turns to the state of separating from the linkage assembly. At this time, no matter how the handle rotates, it can only control the opening of the circuit breaker module and cannot control the closing of the circuit breaker module. During the use of this application, the situation of incorrect closing is not likely to occur, and it has high safety performance and small potential hazards.

[0009] Optionally, the linkage assembly includes a linkage plate rotatably arranged on the housing, a connecting rod connected between the handle and the linkage plate, and a swing rod rotatably arranged on the linkage plate. The circuit breaker module includes a static contact fixedly arranged in the housing and a moving contact rotatably arranged on the linkage plate. A positioning block is fixed at one end of the moving contact. A positioning groove for the positioning block to extend into is formed on the swing rod. A positioning notch is communicated and opened on one side of the positioning groove. A fixing block for abutting against the moving contact is arranged on the housing, and the fixing block is close to the end of the moving contact away from the positioning block. When the anti-touch block is pressed down, the lock catches abut against one end of the swing rod away from the positioning groove, so that the positioning block cannot move out of the positioning groove. When the anti-touch block moves up, the lock catches are separated from the swing rod, and the positioning block can move out of the positioning groove along the positioning notch.

[0010] By adopting the above technical solution, when the anti-touch block moves up, the lock catches and the swing rod are in a separated state. If the handle is rotated in the closing direction, the linkage plate will rotate relative to the housing under the action of the connecting rod, so that the swing rod rotates around its connection position with the linkage plate as the axis. During this process, the positioning block will move out of the positioning groove along the positioning notch, and the moving contact will abut against the fixing block and swing around the abutting position of the two. At this time, the swing amplitude and deflection angle of the moving contact are small, and the moving contact cannot contact the static contact, and the circuit breaker module cannot be closed.

[0011] When the anti-touch block is pressed down, the lock catches abut against the swing rod and can limit the swing rod. If the handle is rotated in the closing direction, then during the rotation of the linkage plate relative to the housing, the swing rod cannot move to the state where the positioning block moves out of the positioning groove. At this time, the moving contact will swing around the abutting position of the positioning block and the swing rod, with a large swing amplitude and deflection angle, and the moving contact can contact the static contact to close the circuit breaker module. In this application, the structures of the linkage assembly and the anti-misoperation mechanism are compact, the linkage cooperation strength is high, and the anti-misoperation effect is good.

[0012] Optionally, the open - circuit module includes an N - pole open - circuit module and an L - pole open - circuit module. Both the N - pole open - circuit module and the L - pole open - circuit module include a moving contact and a static contact arranged oppositely, and the moving contacts of the N - pole open - circuit module and the L - pole open - circuit module can be synchronously linked.

[0013] By adopting the above - mentioned technical solution, two groups of open - circuit modules are provided in this application. Compared with the design in the market where there is only one - side open - circuit module, the protection effect is good. And the two groups of open - circuit modules are controlled by the same operating mechanism to synchronously link their moving contacts, which has the advantages of high action synchronism and rapid breaking.

[0014] Optionally, the housing includes a base, a first cover plate and a second cover plate respectively arranged on both sides of the base. A first installation cavity is formed between the base and the first cover plate, and the N - pole open - circuit module and the leakage protection module are arranged in the first installation cavity. A second installation cavity is formed between the base and the second cover plate, and the L - pole open - circuit module and the operating mechanism are arranged in the second installation cavity.

[0015] By adopting the above - mentioned technical solution, the N - pole open - circuit module and the L - pole open - circuit module are respectively arranged on both sides of the base, with a compact structure, reasonable layout, and little interference between them.

[0016] Optionally, the leakage protection module further includes a zero - sequence current transformer and a circuit board electrically connected to the release. A test mechanism is arranged in the housing. The test mechanism includes a test button, a conductive spring rotatably arranged in the housing, a conductive sheet fixedly arranged in the housing, a wire connecting the conductive spring and the circuit board, and a test resistor installed on the circuit board. One end of the test resistor is electrically connected to the conductive sheet, and the other end is electrically connected to the outgoing line end of the L - pole open - circuit module. The conductive spring is electrically connected to the incoming line end of the N - pole open - circuit module. When the test button is pressed down, the conductive spring can contact the conductive sheet.

[0017] By adopting the above - mentioned technical solution, during the leakage test, when a person presses down the test button, the conductive spring is pressed and contacts the conductive sheet, making the leakage test circuit conduct and forming a simulated leakage current. If the leakage protection module is normal, after the zero - sequence current transformer detects the above - mentioned leakage current, it will output a leakage signal to the circuit board. After the circuit board amplifies and processes the above - mentioned signal, the coil in the release will be energized and attracted, and the circuit will be automatically disconnected, thus playing a role in power - off protection. If the leakage protection module is abnormal, the release cannot cut off the circuit. The setting of the test mechanism can effectively test whether the leakage protection module is normal, thereby further ensuring the safe and stable operation of the circuit.

[0018] Optionally, a boss is integrally formed on the outer shell. The reset member includes a reset spring abutted between the boss and the anti-touch block. The telescopic direction of the reset spring is parallel to the moving direction of the anti-touch block. A relief groove for the reset spring to extend into is formed on the anti-touch block.

[0019] By adopting the above technical solution, when the anti-misoperation mechanism is installed in place, the reset spring abuts between the boss and the anti-touch block. When the anti-touch block is pressed down, the reset spring is compressed and deformed to generate an elastic force. After the pressure on the anti-touch block is removed, the above elastic force can make the anti-touch block automatically reset to the state of moving out of the outer shell. The structure is simple and the reset effect is good. When the reset spring is installed on the anti-touch block, one end of it is located in the relief groove, making it not easy for the reset spring to separate from the anti-touch block.

[0020] Optionally, a guiding block is provided on the anti-touch block. A first guiding groove for the guiding block to slide into is formed on the outer shell. One side of the first guiding groove communicates with a second guiding groove for slidingly cooperating with the guiding block. The extending direction of the second guiding groove is parallel to the telescopic direction of the reset spring.

[0021] By adopting the above technical solution, when installing the anti-touch block, move the anti-touch block towards the outer shell, so that the guiding block moves along the first guiding groove to the second guiding groove. When pressing the anti-touch block, the guiding block will move along the second guiding groove. The cooperation between the two plays a role of guiding and limiting, which helps to improve the moving stability of the anti-touch block.

[0022] Optionally, an extending post is provided on the wall of the relief groove. The reset spring is sleeved outside the extending post. An anti-disengagement member for restricting the reset spring from moving out of the relief groove is slidably provided on the anti-touch block.

[0023] By adopting the above technical solution, when the reset spring is installed on the anti-touch block, the extending post passes through the reset spring, which plays a role in preventing the reset spring from shifting and twisting, and helps to improve the stability of the reset spring.

[0024] Optionally, the anti-disengagement member includes an anti-disengagement rod slidably passing through the anti-touch block, a connecting block fixed at one end of the anti-disengagement rod, and a connecting spring abutted between the connecting block and the anti-touch block. The connecting spring has a tendency to drive the anti-disengagement rod to extend out of the relief groove.

[0025] By adopting the above technical solution, when installing the anti-misoperation mechanism, first install the reset spring into the relief groove and make it undergo a compressive deformation. At the same time, press the connecting block towards the anti-disengagement rod, so that the anti-disengagement rod moves into the relief groove. At this time, the anti-disengagement rod abuts against one side of the reset spring close to the opening of the relief groove, and the reset spring is not easy to fall off and be lost during the installation process of the anti-touch block, and the integrity of the anti-misoperation mechanism is good. After installation in place, release the connecting block, and the anti-disengagement rod will reset to extend out of the relief groove under the action of the connecting spring, which will not affect the normal use of the reset spring.

[0026] Optionally, a stop block is provided on the side of the connecting block facing the anti-touch block, and a stop groove which is interference fit with the stop block is opened on the anti-touch block, and when the stop block extends into the stop groove, one end of the anti-drop rod is located in the yield groove.

[0027] By adopting the above technical solution, when installing the anti-touch block, the stop block can be moved into the stop groove so that the anti-drop rod is positioned in a state of extending into the clearance groove, so that the operator does not need to continuously press the connecting block during the process of moving the anti-touch block, and the operation is simple.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. When the anti-touch block moves upward, no matter how the handle is turned, it can only control the circuit breaker module to open, but cannot control the circuit breaker module to close. The circuit breaker module in this application is not easy to be closed by mistake, and the safety is high;

[0030] 2. The circuit breaker modules are designed with two groups and are located on both sides of the base, which has a good protection effect; the test organization can effectively test whether the leakage protection module is normal to ensure the safe and stable operation of the circuit;

[0031] 3. When installing the anti-accidental touch mechanism, the reset spring can be restricted in the give way groove by the anti-drop rod to prevent it from popping out and falling off when the anti-touch block is installed. The anti-accidental touch mechanism has good integrity and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of Example 1.

[0033] Figure 2 It is a schematic diagram of the explosion of Example 1.

[0034] Figure 3 This is a structural diagram of Example 1 for demonstrating the leakage protection module and the test mechanism.

[0035] Figure 4 It is a structural schematic diagram of Example 1 for displaying the operating mechanism.

[0036] Figure 5 It is a partial schematic diagram of the anti-touch block when pressed down in Example 1.

[0037] Figure 6 It is a schematic diagram of the structure of the lock, the rocker rod and the moving contact in Example 1.

[0038] Figure 7 It is a partial schematic diagram of the anti-touch block when moving upward in Example 1.

[0039] Figure 8 It is a partial schematic diagram of the base and the anti-touch block in Example 2.

[0040] Figure 9 It is a partial schematic view of the base in Embodiment 2.

[0041] Figure 10 It is a schematic structural view of the anti-touch block in Embodiment 2.

[0042] Figure 11 It is a schematic sectional view of the anti-touch block in Embodiment 2.

[0043] Explanation of reference numerals:

[0044] 1. Outer shell; 11. Base; 12. First cover plate; 13. Second cover plate; 14. First installation cavity; 15. Second installation cavity; 16. Boss; 17. First guide groove; 18. Second guide groove; 21. N-pole open circuit module; 22. L-pole open circuit module; 23. Short-circuit electromagnetic trip device; 24. Arc extinguishing device; 25. Overload trip device; 26. Moving contact; 261. Positioning block; 27. Static contact; 3. Leakage protection module; 31. Trip device; 32. Zero-sequence current transformer; 33. Circuit board; 4. Operating mechanism; 41. Handle; 42. Linkage assembly; 421. Linkage plate; 422. Connecting rod; 423. Rocker; 424. Positioning groove; 425. Positioning notch; 5. Anti-misoperation mechanism; 51. Anti-touch block; 511. Relief groove; 512. Guide block; 513. Extension column; 514. Stopping groove; 52. Reset member; 521. Reset spring; 53. Movable plate; 531. Through hole; 54. Lock; 55. Limiting rod; 6. Test mechanism; 61. Test button; 62. Conductive spring; 63. Conductive sheet; 64. Wire; 7. Anti-disengagement member; 71. Anti-disengagement rod; 72. Connecting block; 721. Stopping block; 73. Connecting spring; 8. Fixed block. Detailed implementation manners

[0045] The following further describes the present application in detail Figures 1-11 in conjunction with the attached drawings.

[0046] The embodiment of the present application discloses an electronic leakage circuit breaker.

[0047] Embodiment 1

[0048] Referring to Figure 1 , Figure 2 , the electronic leakage circuit breaker includes an outer shell 1 and an open circuit module, a leakage protection module 3, an operating mechanism 4 and an anti-misoperation mechanism 5 arranged in the outer shell 1, wherein the open circuit module can trip and close to control the on-off of the circuit; the leakage protection module 3 can monitor the leakage situation in the circuit in real time and quickly cut off the power supply when there is a leakage to prevent electric shock caused by current passing through the human body.

[0049] Referring to Figure 1 , Figure 2, the housing 1 includes a base 11, a first cover plate 12 and a second cover plate 13 respectively arranged on both sides of the base 11. The first cover plate 12 and the second cover plate 13 can be detachably connected to the base 11 by a snap connection method.

[0050] Refer to Figure 3 , Figure 4 , a first installation cavity 14 is formed between the base 11 and the first cover plate 12, and a second installation cavity 15 is formed between the base 11 and the second cover plate 13. The leakage protection module 3 is arranged in the first installation cavity 14, and the operating mechanism 4 is arranged in the second installation cavity 15. It should be noted that in this application, the base 11 is formed by an integral injection molding method, and the first installation cavity 14 and the second installation cavity 15 are both opened on the base 11, which has the advantages of simple production and high efficiency.

[0051] Refer to Figure 3 , Figure 4 , the circuit breaker module includes an N-pole circuit breaker module 21, an L-pole circuit breaker module 22, a short-circuit electromagnetic tripping device 23, an arc extinguishing device 24 and an overload tripping device 25. Among them, the N-pole circuit breaker module 21 is located in the first installation cavity 14, and the L-pole circuit breaker module 22, the short-circuit electromagnetic tripping device 23, the arc extinguishing device 24 and the overload tripping device 25 are all located in the second installation cavity 15. Since the specific structures and working principles of the short-circuit electromagnetic tripping device 23, the arc extinguishing device 24 and the overload tripping device 25 all belong to the prior art and are not the main improvement points of this application, they will not be elaborated here.

[0052] Specifically, both the N-pole circuit breaker module 21 and the L-pole circuit breaker module 22 include a moving contact 26 and a static contact 27 arranged oppositely. Among them, the static contact 27 is fixedly arranged in the housing 1, the moving contact 26 is movably arranged in the housing 1, and the moving contact 26 of the N-pole circuit breaker module 21 and the moving contact 26 of the L-pole circuit breaker module 22 can be synchronously linked. For example, their rotating shafts can be designed as an integral type or a detachable connection type, and any method that can achieve the linkage of the two can be used.

[0053] Refer to Figure 3 , the leakage protection module 3 includes a tripping device 31, a zero-sequence current transformer 32 and a circuit board 33 that are electrically connected to each other. Among them, the tripping device 31 can quickly cut off the circuit during leakage, and its working principle belongs to the prior art and will not be elaborated here.

[0054] Refer to Figure 3, a test mechanism 6 is provided on the housing 1 and located in the first installation cavity 14. The test mechanism 6 includes a test button 61, a conductive spring 62 rotatably arranged in the housing 1, a conductive sheet 63 fixedly arranged in the housing 1, a wire 64 connected between the conductive spring 62 and the circuit board 33, and a test resistor fixedly installed on the circuit board 33. One end of the test resistor is electrically connected to the conductive sheet 63, and the other end is electrically connected to the outgoing line end of the L-pole disconnection module 22. The conductive spring 62 is electrically connected to the incoming line end of the N-pole disconnection module 21. When the test button 61 is manually pressed, the conductive spring 62 will contact the conductive sheet 63, making the leakage test circuit conduct and generating a leakage current simulating human electric shock. If the leakage protection module 3 is normal, the zero-sequence current transformer 32 will sense the leakage current and generate a leakage signal. The above leakage signal will control the tripping device 31 to act after being amplified and processed by the circuit board 33, so as to quickly cut off the circuit, thus playing a role in leakage protection. After releasing the test button 61, the elastic force of the conductive spring 62 will drive the test button 61 to automatically reset.

[0055] Referring to Figure 4 , Figure 5 , the operating mechanism 4 includes a handle 41 and a linkage assembly 42 arranged between the handle 41 and the moving contact 26 of the L-pole disconnection module 22. The handle 41 is rotatably arranged on the housing 1 and one end is exposed. The linkage assembly 42 includes a linkage plate 421 rotatably arranged on the housing 1, a connecting rod 422 connected between the handle 41 and the linkage plate 421, and a swing rod 423 rotatably arranged on the linkage plate 421. The moving contact 26 of the L-pole disconnection module 22 is rotatably arranged on the linkage plate 421. Taking the Figure 4 perspective as an example, when controlling the disconnection module to close, the handle 41 needs to be rotated clockwise. The connecting rod 422 will transmit the torque to the linkage plate 421, making the linkage plate 421 rotate counterclockwise around its connection position with the housing 1. At the same time, the swing rod 423 and the moving contact 26 will also generate corresponding adaptive movements.

[0056] It should be noted that in order to enable the disconnection module to quickly reset to the open state, torsion springs and other reset structures can be correspondingly arranged between the housing 1 and the handle 41 and between the housing 1 and the linkage plate 421. The above reset structures belong to the prior art and will not be elaborated and prominently shown here.

[0057] Referring to Figure 4 , Figure 6, a positioning block 261 is fixed to one end of the moving contact 26 of the L-pole disconnection module 22 away from the static contact 27. A positioning groove 424 for the positioning block 261 to extend into is formed on the swing rod 423, and a positioning notch 425 is communicated and opened on one side of the positioning groove 424. A fixing block 8 for abutting against the moving contact 26 of the L-pole disconnection module 22 is arranged on the housing 1. The fixing block 8 is located on the side of the moving contact 26 away from the static contact 27 and is close to the end of the moving contact 26 away from the positioning block 261.

[0058] Refer to Figure 5 , Figure 6 , when the handle 41 rotates in the clockwise direction (i.e., the closing direction), if the swing rod 423 is not limited, the swing rod 423 will rotate counterclockwise around its connection position with the linkage plate 421 as the axis, and the positioning block 261 will move out of the positioning groove 424 along the positioning notch 425. At this time, the moving contact 26 of the L-pole disconnection module 22 will abut against the fixing block 8 and swing around its abutting position with the fixing block 8 as the center. The swing amplitude and deflection angle are small, and the moving contact 26 cannot contact the static contact 27, and the handle 41 cannot control the disconnection module to close. If the swing rod 423 is limited so that it cannot rotate counterclockwise when the handle 41 rotates, the positioning block 261 will always be located in the positioning groove 424, and the moving contact 26 of the L-pole disconnection module 22 will swing around the abutting position of the positioning block 261 and the swing rod 423 as the center. The swing amplitude and deflection angle are large, and the moving contact 26 can contact the static contact 27 to control the disconnection module to close.

[0059] Refer to Figure 5 , Figure 7 , the anti-misoperation mechanism 5 includes an anti-touch block 51 slidably arranged on the housing 1, a reset member 52 for driving the anti-touch block 51 out of the housing 1, a movable plate 53 and a lock 54 rotatably arranged on the housing 1, and a limiting rod 55 fixed to the side of the movable plate 53 facing the lock 54. The limiting rod 55 is abutted against one side of the lock 54, and the lock 54 is located in the second installation cavity 15. It should be noted that in order to enable the lock 54 to keep abutting against the limiting rod 55, an elastic member (not shown in the figure) for applying a force to the lock 54 in the direction towards the limiting rod 55 is arranged on the housing 1 in this embodiment. The elastic member is preferably a torsion spring. In other embodiments, the above elastic member can also be replaced by other mechanical structures, and any structure that can reset the lock 54 to the position where it abuts against the swing rod 423 is acceptable.

[0060] Refer to Figure 3 , Figure 5, a boss 16 is integrally formed in the first installation cavity 14 of the housing 1. The reset member 52 includes a reset spring 521 disposed in abutment between the boss 16 and the anti-touch block 51. The telescopic direction of the reset spring 521 is parallel to the moving direction of the anti-touch block 51 along the housing 1. A relief groove 511 is formed in the anti-touch block 51. In the natural state, one end of the reset spring 521 is located in the relief groove 511 and the other end extends out of the anti-touch block 51. At this time, the top end of the anti-touch block 51 moves out of the housing 1 to facilitate the operator to press.

[0061] Referring to Figure 7 , a through hole 531 is formed in the movable plate 53. The push rod of the release 31 is inserted through the movable plate 53 and can control the rotation of the movable plate 53. When the anti-touch block 51 moves upward, the through hole 531 and the anti-touch block 51 are misaligned. The movable plate 53 abuts against one side of the anti-touch block 51, and the limit rod 55 is in a state of releasing the limit of the locking mechanism 54 on the swing rod 423. At this time, the handle 41 can only control the opening of the circuit breaker module and cannot control the closing of the circuit breaker module. After the anti-touch block 51 is pressed down to align with the through hole 531, if the push rod of the release 31 controls the rotation of the movable plate 53, the anti-touch block 51 will move into the through hole 531, the limit rod 55 will deflect away from the locking mechanism 54, and the locking mechanism 54 will rotate under the action of the elastic member to a state of limiting the swing rod 423. At this time, the handle 41 can control the opening and closing of the circuit breaker module.

[0062] The implementation principle of an electronic leakage circuit breaker according to an embodiment of the present application is as follows:

[0063] When the anti-touch block 51 moves upward, the movable plate 53 abuts against the anti-touch block 51 and the locking mechanism 54 separates from the swing rod 423. If the handle 41 is rotated in the closing direction, the connecting rod 422 will drive the linkage plate 421 to rotate relative to the housing 1, causing the swing rod 423 to rotate about its connection position with the linkage plate 421 as an axis, and the positioning block 261 moves out of the positioning groove 424 along the positioning notch 425. At this time, the moving contact 26 of the L-pole circuit breaker module 22 abuts against the fixed block 8 and swings around their abutting position. The swing amplitude and deflection angle are small, and the moving contact 26 cannot contact the static contact 27, and the handle 41 cannot control the closing of the circuit breaker module.

[0064] When the anti-touch block 51 is pressed down, the movable plate 53 will rotate under the action of the release 31, and the limit rod 55 will deflect to the side away from the lock buckle 54. The lock buckle 54 will rotate to abut against the swing rod 423 under the action of the elastic member to prevent the swing rod 423 from rotating counterclockwise. If the handle 41 is rotated in the closing direction, the swing rod 423 is limited by the lock buckle 54 and cannot rotate, and the positioning block 261 will abut against the groove wall of the positioning groove 424. At this time, the moving contact 26 of the L-pole circuit breaker module 22 will swing around the abutment position of the positioning block 261 and the swing rod 423, with a large swing amplitude and deflection angle. The moving contact 26 can contact with the static contact 27 to control the closing of the circuit breaker module. When the anti-touch block 51 moves up, the present application can only control the circuit breaker module to open and cannot control the circuit breaker module to close no matter how the handle 41 is rotated, which has high safety.

[0065] Example 2

[0066] Reference Figure 8 , Figure 9 and Figure 10 The difference between this embodiment and the first embodiment is that a guide block 512 is fixed on the side wall of the anti-touch block 51, and the housing 1 is provided with a first guide groove 17 and a second guide groove 18 that are interconnected. The combination of the two forms an L-shape and can slide with the guide block 512, and the side of the first guide groove 17 away from the second guide groove 18 is open, and the extension direction of the second guide groove 18 is parallel to the expansion and contraction direction of the reset spring 521. When the anti-touch block 51 is installed, the guide block 512 can move into the second guide groove 18 along the first guide groove 17, and slide along the second guide groove 18 when the anti-touch block 51 moves relative to the housing 1, and the installation and movement stability of the anti-touch block 51 is high.

[0067] Reference Figure 11 An extension column 513 is provided on the groove wall of the giving way groove 511, and the extension column 513 is integrally formed on the anti-touch block 51. When the return spring 521 is installed on the anti-touch block 51, the extension column 513 is inserted into the return spring 521 to prevent the return spring 521 from deflecting.

[0068] Reference Figure 10 , Figure 11 The anti-touch block 51 is provided with an anti-slip member 7 to prevent the reset spring 521 from moving out of the clearance groove 511. The anti-slip member 7 includes an anti-slip rod 71 slidably inserted into the anti-touch block 51, a connecting block 72 fixed to the end of the anti-slip rod 71 away from the anti-touch block 51, and a connecting spring 73 abuttingly arranged between the connecting block 72 and the anti-touch block 51. The connecting spring 73 has a tendency to drive the anti-slip rod 71 to extend out of the clearance groove 511, that is, when the connecting spring 73 is in a natural state, the anti-slip rod 71 is located outside the clearance groove 511.

[0069] Reference Figure 11, a stop block 721 is fixed to one side of the connection block 72 facing the anti-touch block 51, and a stop groove 514 that is in interference fit with the stop block 721 is formed on the anti-touch block 51. When the stop block 721 extends into the stop groove 514, one end of the anti-disengagement rod 71 is located in the relief groove 511.

[0070] The implementation principle of an electronic leakage circuit breaker according to an embodiment of the present application is as follows: When installing the anti-misoperation mechanism 5, first install the return spring 521 into the relief groove 511, and make the extension column 513 pass through the return spring 521. Then compress the return spring 521, and press the connection block 72 towards the anti-touch block 51 until the stop block 721 is in interference fit with the stop groove 514. At this time, the anti-disengagement rod 71 can limit the return spring 521 in the compressed state to prevent the return spring 521 from moving out of the relief groove 511. The anti-misoperation mechanism 5 has good integrity, and it is not easy to have the situation that the return spring 521 falls off and is lost during the installation process. After the anti-touch block 51 is installed in place, pull the connection block 72 towards the side away from the anti-touch block 51 so that the anti-disengagement rod 71 moves out of the relief groove 511, which will not affect the normal use of the return spring 521.

[0071] The above are all the preferred embodiments of the present application. Without restricting the protection scope of the present application based on this, therefore: All equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An electronic leakage circuit breaker, comprising a housing (1) and a circuit breaker module, a leakage protection module (3) and an operating mechanism (4) arranged in the housing (1), the operating mechanism (4) comprising a handle (41), a linkage component (42) arranged between the handle (41) and the circuit breaker module, the linkage component (42) being movable with the handle (41) to control the opening and closing of the circuit breaker module, the leakage protection module (3) comprising a tripper (31), characterized in that: The invention also comprises an anti-accidental touch mechanism (5), the anti-accidental touch mechanism (5) comprising an anti-accidental touch block (51) slidably arranged on the housing (1), a reset member (52) for driving the anti-accidental touch block (51) to move out of the housing (1), a movable plate (53) and a lock (54) rotatably arranged on the housing (1), and a limit rod (55) fixed on a side of the movable plate (53) facing the lock (54), the limit rod (55) abutting against one side of the lock (54), and a stopper (55) for pressing down the anti-accidental touch block (51) on the movable plate (53). The push rod of the releaser (31) is inserted into the through hole (531), and the push rod of the releaser (31) is inserted into the movable plate (53) and can control the rotation of the movable plate (53); when the anti-touch block (51) is pressed down, the lock buckle (54) can limit the linkage component (42), and the handle (41) can control the opening and closing of the circuit breaker module; when the anti-touch block (51) moves up, the lock buckle (54) releases the limit on the linkage component (42), and the handle (41) can only control the opening of the circuit breaker module but cannot control the closing of the circuit breaker module; The housing (1) is integrally formed with a boss (16); the reset member (52) comprises a reset spring (521) disposed between the boss (16) and the anti-touch block (51); the retracting direction of the reset spring (521) is parallel to the moving direction of the anti-touch block (51); and the anti-touch block (51) is provided with a clearance groove (511) for the reset spring (521) to extend into; The anti-touch block (51) is provided with a guide block (512), the housing (1) is provided with a first guide groove (17) for the guide block (512) to slide into, one side of the first guide groove (17) is connected to a second guide groove (18) for slidingly cooperating with the guide block (512), and the extension direction of the second guide groove (18) is parallel to the extension direction of the return spring (521); An extension column (513) is arranged on the groove wall of the clearance groove (511), the return spring (521) is sleeved on the outer side of the extension column (513), and an anti-dropping member (7) for limiting the return spring (521) from moving out of the clearance groove (511) is slidably arranged on the anti-contact block (51); The anti-slip member (7) comprises an anti-slip rod (71) slidably inserted into the anti-touch block (51), a connecting block (72) fixed at one end of the anti-slip rod (71), and a connecting spring (73) abuttingly arranged between the connecting block (72) and the anti-touch block (51), wherein the connecting spring (73) has a tendency to drive the anti-slip rod (71) to extend out of the clearance groove (511).

2. The electronic residual current circuit breaker according to claim 1, characterized in that: The linkage assembly (42) comprises a linkage plate (421) rotatably arranged on the housing (1), a connecting rod (422) connected between the handle (41) and the linkage plate (421), and a swing rod (423) rotatably arranged on the linkage plate (421); the circuit breaker module comprises a stationary contact (27) fixedly arranged in the housing (1), a moving contact (26) rotatably arranged on the linkage plate (421), a positioning block (261) being fixed at one end of the moving contact (26), a positioning groove (424) for the positioning block (261) to extend into being provided on the swing rod (423), and one side of the positioning groove (424) is connected to the moving contact (261). A positioning notch (425) is provided on the housing (1); a fixing block (8) for abutting against the moving contact (26); the fixing block (8) is close to an end of the moving contact (26) away from the positioning block (261); when the anti-contact block (51) is pressed downward, the lock buckle (54) abuts against an end of the swing rod (423) away from the positioning groove (424), so that the positioning block (261) cannot move out of the positioning groove (424); when the anti-contact block (51) moves upward, the lock buckle (54) separates from the swing rod (423), and the positioning block (261) can move out of the positioning groove (424) along the positioning notch (425).

3. The electronic residual current circuit breaker according to claim 1, characterized in that: The circuit breaker module comprises an N-pole circuit breaker module (21) and an L-pole circuit breaker module (22); the N-pole circuit breaker module (21) and the L-pole circuit breaker module (22) both comprise a moving contact (26) and a stationary contact (27) arranged relatively to each other; and the moving contact (26) of the N-pole circuit breaker module (21) and the moving contact (26) of the L-pole circuit breaker module (22) can be synchronously linked.

4. The electronic residual current circuit breaker according to claim 3, characterized in that: The housing (1) comprises a base (11), a first cover plate (12) and a second cover plate (13) respectively arranged on both sides of the base (11); a first installation cavity (14) is formed between the base (11) and the first cover plate (12); the N-pole circuit breaker module (21) and the leakage protection module (3) are arranged in the first installation cavity (14); a second installation cavity (15) is formed between the base (11) and the second cover plate (13); the L-pole circuit breaker module (22) and the operating mechanism (4) are arranged in the second installation cavity (15).

5. The electronic residual current circuit breaker according to claim 3, characterized in that: The leakage protection module (3) further comprises a zero-sequence mutual inductor (32) and a circuit board (33) electrically connected to the release (31); a test mechanism (6) is arranged in the housing (1); the test mechanism (6) comprises a test button (61), a conductive spring (62) rotatably arranged in the housing (1), a conductive sheet (63) fixedly arranged in the housing (1), a wire (64) connected between the conductive spring (62) and the circuit board (33), and a test resistor installed on the circuit board (33); one end of the test resistor is electrically connected to the conductive sheet (63), and the other end is electrically connected to the output terminal of the L-pole circuit breaker module (22); the conductive spring (62) is electrically connected to the input terminal of the N-pole circuit breaker module (21); and when the test button (61) is pressed down, the conductive spring (62) can contact the conductive sheet (63).

6. The electronic residual current circuit breaker according to claim 1, characterized in that: A stop block (721) is arranged on one side of the connection block (72) facing the anti-touch block (51); a stop groove (514) which is interference-fitted with the stop block (721) is provided on the anti-touch block (51); when the stop block (721) extends into the stop groove (514), one end of the anti-slip rod (71) is located in the clearance groove (511).

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