A leakage tripping device for leakage circuit breaker

Abstract

The present invention relates to a circuit breaker, in particular to a leakage tripping device on a leakage circuit breaker. The present invention adopts the following technical scheme: a leakage tripping device of a leakage circuit breaker, characterized in that it includes a handle mechanism, a leakage action mechanism, a power-taking mechanism and a tripping mechanism, wherein the leakage action mechanism includes a lever, a jumper, a lock and a torsion spring, wherein the lever is hingedly arranged on the housing of the leakage circuit breaker through a first pin shaft, and the locker is also rotatably arranged through the first pin shaft. By adopting the above scheme, the present invention overcomes the problems existing in the prior art and provides a new leakage tripping device on a leakage circuit breaker with a reasonable structure and convenient installation.

Description

Technical Field

[0001] The invention relates to a circuit breaker, in particular to a leakage tripping device on a leakage circuit breaker. Background Art

[0002] The power supply mechanism of the existing leakage circuit breaker is completely different from that in the present application document, and has a complex structure, a large volume, and is inconvenient to install. In addition, tripping due to other reasons and leakage tripping cannot be well distinguished. Summary of the invention

[0003] The present invention overcomes the problems existing in the prior art and provides a novel leakage tripping device on a leakage circuit breaker which has a reasonable structure and is convenient to install.

[0004] To achieve the above object, the present invention adopts the following technical scheme: a leakage tripping device of a leakage circuit breaker, characterized in that it includes a handle mechanism, a leakage action mechanism, a power-taking mechanism and a tripping mechanism, wherein the leakage action mechanism includes a lever, a jumper, a lock and a torsion spring, the lever is hingedly arranged on the housing of the leakage circuit breaker through a first pin shaft, and the lock is also rotatably arranged through the first pin shaft, the jumper is hingedly arranged at the upper end of the lever, the jumper is connected to the leakage handle in the handle mechanism through a connecting rod, and the lock includes a first extension The first extension leg and the second extension leg are provided with a card platform at the upper end of the first extension leg. After the leakage circuit breaker is closed, the lock catch is engaged with the jump catch through the card platform to realize the positioning of the lever. The torsion force of the torsion spring acts on the second extension leg of the lock catch to cause the card platform on the first extension leg of the lock catch to engage with the jump catch. The tripping mechanism includes a tripper and a push block. The tripper can drive the push block to move. The push block is arranged under the second extension leg of the lock catch and facing the second extension leg. The push block can push the second extension leg to realize the rotation of the lock catch. The rotation of the lock catch can separate the card platform from the jump catch. In addition to positioning the lever, the power-taking mechanism includes a conductive sheet arranged on the housing of the circuit breaker, and the conductive sheets are at least provided with two groups, and the adjacent two groups of conductive sheets are separated and aligned. Each group of conductive sheets includes a first conductive sheet and a second conductive sheet, and the first and second conductive sheets are arranged at intervals. A slide groove is arranged on the housing of the circuit breaker and located between the first and second conductive sheets, and a baffle is arranged at one end of the slide groove. A bracket is arranged on the slide groove, and a resistance spring is arranged between one end of the bracket and the baffle. The bracket slides with the slide groove, and the other end of the bracket corresponds to the lever. The lever rotates to push the bracket to move. The bracket is provided with a mounting hole corresponding to each group of conductive sheets, and a conductive contact sheet is arranged in the mounting hole. During the closing process of the leakage circuit breaker, the bracket is pushed by the lever to overcome the elastic force of the resistance spring and moves, and then the two ends of the conductive contact sheet contact with the first and second conductive sheets of the corresponding group of conductive sheets, so that the first and second conductive sheets of the group of conductive sheets are electrically connected. When the leakage circuit breaker is disconnected from the leakage, the lever moves under the action of the bracket and the resistance spring, and then the two ends of the conductive contact sheet are disconnected from the first and second conductive sheets.

[0005] By adopting the above scheme, the structure of the leakage tripping device is reasonable, and the leakage action mechanism adopts the above scheme very scientifically. When the tripper senses the leakage signal, it can push the lock, and the card platform on the lock is separated from the jump buckle, so that the lever is released. At this time, the bracket in the power-taking mechanism can push the lever to rotate the leakage handle back to the disconnected position, and the power-taking mechanism is also disconnected at the same time, which is very reasonable.

[0006] A further configuration of the present invention is: it also includes a partition, which is fixedly arranged on the housing of the circuit breaker, and is provided with a guide groove and a protrusion on the partition, the push block and the guide groove form a guiding sliding fit, the torsion spring is sleeved on the protrusion, the second extension foot of the lock is provided with a torsion spring abutment column and a paddle, a torsion spring abutment arm abuts on the torsion spring abutment column, the connecting rod of other action mechanisms of the leakage circuit breaker is placed on the paddle, the lock rotates under the push of the push block and its paddle can drive the connecting rod to move to realize the action of other action mechanisms of the leakage circuit breaker, a display panel is provided on the upper end of the lever, and a hole for the display panel to display is provided on the circuit breaker housing.

[0007] By setting up a partition, the convenience of installing parts is greatly simplified. In addition, a guide groove and a boss are set on the partition to limit the sliding of the push block. The boss is also for the convenience of installing the torsion spring. The function of the display panel is to distinguish whether the circuit breaker is tripped due to leakage or other reasons.

[0008] The present invention is further configured as follows: the bracket is integrally formed by an upper and a lower part, wherein the upper part is a mounting part and the lower part is a sliding part, wherein a long groove is arranged on the bottom surface of the sliding part, and a guide block is arranged in the middle of the sliding groove. After the sliding part is placed in the sliding groove, the guide block is just placed in the long groove on the bottom surface of the sliding part to form a guided sliding match between the bracket and the sliding groove. The width of the mounting hole on the mounting part is greater than the thickness of the conductive contact piece. After the conductive contact piece is placed in the mounting hole, it is pressed on one side of the mounting hole by a spring. When the conductive contact piece contacts the first and second conductive pieces, it can overcome the elastic force of the spring on the conductive contact piece. A spring is arranged on one side of the conductive contact piece. A boss is provided, a boss is provided on the inner wall of the mounting hole, one end of the spring is fixed on the boss, and the other end is fixed on the boss, a notch is provided on the upper side of the conductive contact piece, the notch is opposite to the width of the upper side surface of the mounting hole, the notch is clamped on both sides of the upper side surface of the mounting hole to realize sliding fixation between the conductive contact piece and the bracket, a positioning guide convex strip is provided on the upper top surface of the mounting portion, a guide groove is provided on the circuit breaker housing to form a guiding sliding match with the guide convex strip, the two ends of the conductive piece on the circuit breaker housing and located on the fixing holes are respectively provided, the two ends of the conductive piece are respectively inserted in the fixing holes, and a long convex rib is provided at the position of the conductive piece in contact with the conductive contact piece.

[0009] By adopting the above scheme, the structure of the bracket is reasonably set, the setting of the long groove and the guide block can well realize the guidance between the bracket and the slide groove, and the guiding sliding effect is better. The conductive contact piece is set in the mounting hole through the spring, so that when the conductive contact piece contacts with the first and second conductive pieces, it can fully ensure good contact between the two, and also ensure that the conductive contact piece will not fall off when sliding. The upper top surface of the mounting part and the shell are matched in the above manner, which further ensures that the bracket is stable during the sliding process and does not change its position.

[0010] A further configuration of the present invention is that a curved surface is provided at the lower end of the lever, and the curved surface cooperates with the bracket to push the bracket to move.

[0011] By adopting the above solution, the directions of the pushing forces between the lever and the bracket are made consistent.

[0012] A further configuration of the present invention is that the handle mechanism includes a leakage circuit breaker handle, a leakage handle and a leakage torsion spring, the leakage circuit breaker handle and the leakage handle are arranged in parallel, the leakage circuit breaker handle is provided with a mounting hole, the mounting hole is provided with a pin shaft, the leakage handle includes a connecting portion and a protruding portion, the connecting portion is provided with a mounting through hole, the mounting through hole is sleeved on the boss of the leakage circuit breaker housing, the protruding portion is fan-shaped as a whole, the protruding portion is provided with a connecting hole for connecting a connecting rod, the two sides of the protruding portion are a first side surface and a second side surface, wherein the first side surface is a contact surface, the contact surface cooperates with the pin shaft, and the pin shaft can push the contact surface to realize the closing of the leakage handle during the closing process of the leakage circuit breaker.

[0013] By adopting the above scheme, during the closing process of the circuit breaker handle, the leakage handle can be pushed by the pin shaft pushing the first side surface, and finally the circuit breaker is closed. During the opening process, if the circuit breaker is opened due to leakage, the first side surface of the leakage handle pushes the pin shaft to open the entire circuit breaker. If the circuit breaker is opened due to other reasons, the leakage handle does not rotate, so that the opening situation of the circuit breaker can be distinguished.

[0014] The final setting of the present invention is: the leakage torsion spring is sleeved on the convex column of the leakage circuit breaker housing on which the leakage handle is installed, and a slot is provided on the leakage handle and close to the second side surface, the first extension leg of the leakage torsion spring is placed in the slot, the second extension leg of the leakage torsion spring abuts against the convex block of the leakage circuit breaker housing, the leakage torsion spring generates a torque for the leakage handle to rotate in the disconnecting direction, the second side surface of the protrusion is the positioning abutment edge of the leakage handle after closing, and after closing, the abutment edge abuts or closely matches with the baffle bar on the housing of the leakage circuit breaker.

[0015] By adopting the above solution, the installation of the leakage torsion spring is very convenient and has a reasonable structure. The rotation angle of the leakage handle after closing can be limited by the second side surface of the protrusion, thereby protecting the leakage handle well.

[0016] The present invention will be further described below in conjunction with specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the embodiment of the present invention after the gate is opened;

[0018] Figure 2 This is a structural diagram of the closing process of an embodiment of the present invention;

[0019] Figure 3 This is a structural diagram of the embodiment of the present invention after closing the circuit breaker;

[0020] Figure 4 This is a structural diagram of an embodiment of the present invention when a leakage trip occurs;

[0021] Figure 5 This is a structural diagram of an embodiment of the present invention when overload or short circuit trips;

[0022] Figure 6 It is a structural diagram of the leakage action mechanism of an embodiment of the present invention;

[0023] Figure 7 A three-dimensional diagram of a baffle according to an embodiment of the present invention;

[0024] Figure 8 is a three-dimensional diagram of a lock according to an embodiment of the present invention;

[0025] Fig. 9 This is a structural diagram of a power supply mechanism according to an embodiment of the present invention;

[0026] Fig.10 A three-dimensional diagram of a conductive connecting piece in a power taking mechanism according to an embodiment of the present invention;

[0027] Fig.11 This is a bottom structural diagram of a power taking mechanism support according to an embodiment of the present invention;

[0028] Fig.12 This is a structural diagram of a housing reflecting a slideway according to an embodiment of the present invention;

[0029] Fig.13 This is a structural diagram of a housing reflecting a guide groove according to an embodiment of the present invention;

[0030] Fig.14 This is a structural diagram of a handle mechanism in an off state according to an embodiment of the present invention;

[0031] Fig.15 It is a structural diagram of the handle mechanism during the closing process of an embodiment of the present invention;

[0032] Fig.16 is a three-dimensional diagram of a circuit breaker handle according to an embodiment of the present invention;

[0033] Fig.17It is a three-dimensional diagram of a leakage handle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] like Figure 1-Figure 17As shown, a leakage tripping device of a leakage circuit breaker includes a handle mechanism A, a leakage action mechanism B, a power taking mechanism C and a tripping mechanism D. The leakage action mechanism B includes a lever B1, a tripping buckle B2, a lock buckle B3 and a torsion spring B4. The lever B1 is hingedly arranged on a housing 2 of the leakage circuit breaker through a first pin shaft 1. Here, the circuit breaker housing 2 refers to the housing and the bracket integrally connected or fixedly connected thereto inside. At the same time, the lock buckle B3 is also rotatably arranged through the first pin shaft 1. The tripping buckle B2 is hingedly arranged on the upper end of the lever B1. The tripping buckle B2 is connected to the leakage handle A2 in the handle mechanism A through a connecting rod 3. The lock buckle B3 includes a first extension The first extension leg B31 and the second extension leg B32, wherein the upper end of the first extension leg B31 is provided with a card platform B311, after the leakage circuit breaker is closed, the lock buckle B3 realizes the positioning of the lever B1 through the card platform B311 and the jump buckle B2, so that the lever B1 will not move, and the leakage circuit breaker is in the closed position, and the torsion force of the torsion spring B4 acts on the second extension leg B32 of the lock buckle B3 to cause the card platform B311 of the first extension leg B31 of the lock buckle B3 to engage with the jump buckle B2, and the tripping mechanism D includes a tripper D1 and a push block D2, the tripper D1 can drive the push block D2 to move, and the push block D2 is arranged below the second extension leg B32 of the lock buckle B3 and faces A second extension leg B32 is provided, and a push block D2 can push the second extension leg B32 to realize the rotation of the lock B3. The rotation of the lock B3 can separate the card table B311 from the jump buckle B2 to release the positioning of the lever B1. The power-taking mechanism C includes a conductive sheet C2 provided on the circuit breaker housing 2. The conductive sheet C2 is provided with at least two groups. The two adjacent groups of conductive sheets C2 are separated and aligned. Each group of conductive sheets C2 includes a first conductive sheet C2 and a second conductive sheet C2. The first and second conductive sheets C2 are spaced apart. A slide groove C11 is provided on the leakage circuit breaker housing 2 and between the first and second conductive sheets C2. A baffle C111 is provided at one end of the slide groove C11. A bracket C3 is arranged on the slide groove C11, and a resistance spring C4 is arranged between the bracket C3 and the baffle C111. The bracket C3 slides and cooperates with the slide groove C11. The bracket C3 is provided with a mounting hole C31 corresponding to each group of conductive sheets C2, and a conductive contact sheet C5 is arranged in the mounting hole C31. After the bracket C3 overcomes the elastic force of the resistance spring C4 and moves, the two ends of the conductive contact sheet C5 contact the first and second conductive sheets C2 of the corresponding group of conductive sheets C2, so that the first and second conductive sheets C2 of the group of conductive sheets are electrically connected. After the bracket C3 moves under the action of the resistance spring C4, the two ends of the conductive contact sheet C5 are disconnected from the first and second conductive sheets C2.By adopting the above scheme, the structure of the leakage tripping device is reasonable, and the leakage action mechanism adopts the above scheme very scientifically. When the tripper D1 senses the leakage signal, it can push the lock B3, and the card platform B311 on the lock B3 is separated from the tripping buckle B2, so that the lever B1 is released. At this time, the bracket C3 in the power-taking mechanism can push the lever B1 to rotate, and the leakage handle A2 returns to the disconnected position. At the same time, the power-taking mechanism C is also disconnected, which is very reasonable.

[0035] A further configuration of the present invention is: it also includes a partition E, which is fixedly arranged on the housing 2 of the leakage circuit breaker, and is provided with a guide groove E1 and a convex column E2 on the partition E, and the push block D2 and the guide groove E1 form a guiding sliding fit, the torsion spring B4 is sleeved on the convex column E2, and the second extension foot B32 of the lock buckle B3 is provided with a torsion spring abutting column B321 and a paddle B322, and a paddle arm of the torsion spring B4 abuts on the torsion spring abutting column B321, and the connecting rod of other action mechanisms of the leakage circuit breaker is placed on the paddle B322, and the lock buckle B3 rotates its paddle B322 under the push of the push block D2 to drive the connecting rod to move and realize the action of other action mechanisms of the leakage circuit breaker. It should be clearly stated here that the leakage circuit breaker is usually a plurality of groups of circuit breaker units arranged in parallel, and each circuit breaker unit is divided into A separate action mechanism is provided, and each action mechanism also has a lock, and the locks are linked by connecting rods, so that the action of one action mechanism drives the action of other action mechanisms at the same time. We will not elaborate on the said mutual linkage action between the multiple circuit breaker units arranged in parallel. The leakage action mechanism B in the embodiment of the present invention cooperates with the connecting rod through the paddle B322. The advantage of this is that when other action mechanisms are actuated, that is, the circuit breaker unit is opened, the lock B3 of the leakage action mechanism B will not be actuated. When the lock B3 of the leakage action mechanism B is actuated, the paddle B322 will drive the connecting rod to move, and the other action mechanisms will also be actuated to open. A display panel B11 is provided on the upper end of the lever B1, and a hole for display on the display panel B11 is provided on the circuit breaker housing 2, so it is very convenient to distinguish whether the circuit breaker is tripped due to leakage or other reasons.

[0036] In the embodiment of the present invention, the bracket C3 is integrally formed by an upper and a lower part, wherein the upper part is a mounting part C32, and the lower part is a sliding part C33, wherein a long groove C331 is arranged on the bottom surface of the sliding part C33, and a guide block C112 is arranged in the middle part of the slide groove C11. After the slide part C33 is placed in the slide groove C11, the guide block C112 is just placed in the long groove C331 on the bottom surface of the sliding part C33 to form a guiding sliding cooperation between the bracket C3 and the slide groove C11. The width of the mounting hole C31 on the mounting part C32 is greater than the thickness of the conductive contact sheet C5. After the conductive contact sheet C5 is placed in the mounting hole C31, it is pressed on one side of the mounting hole C31 by a spring C6. When the conductive contact sheet C5 contacts the first and second conductive sheets C2, it can overcome the elastic force of the spring C6 on the conductive contact sheet C5. By adopting the above scheme, the structure of the bracket C3 is reasonably set. The setting of the long groove C331 and the guide block C112 can well realize the guidance between the bracket C3 and the slide groove C11, and the guiding sliding effect is better. The conductive contact piece C5 is set in the mounting hole C31 through the spring C6, so that when the conductive contact piece C5 contacts with the first and second conductive pieces C2, it can fully ensure good contact between the two. A boss C51 is provided on one side of the conductive contact piece C5, a boss C311 is provided on the inner wall of the mounting hole C31, one end of the spring C6 is fixed on the boss C51, and the other end is fixed on the boss C311, a notch C52 is provided on the upper side of the conductive contact piece C5, the notch C52 is opposite to the width of the upper side of the mounting hole C31, the notch C52 is clamped on both sides of the upper side of the mounting hole C31 to achieve sliding fixation between the conductive contact piece C5 and the bracket C3, a positioning guide convex strip C321 is provided on the upper top surface of the mounting portion C32, and a guide groove C13 is provided on the leakage circuit breaker housing 2 to form a guide sliding match with the guide convex strip C321. By adopting the above scheme, it is ensured that the conductive contact piece C5 will not fall off when sliding, and the upper top surface of the mounting portion C32 and the leakage circuit breaker housing 2 are matched in the above manner, which further ensures that the bracket C3 is stable during the sliding process and will not change its position. The two ends of the conductive sheet C2 on the leakage circuit breaker housing 2 are respectively provided with fixing holes C14, and the two ends of the conductive sheet C2 are respectively inserted into the fixing holes C14. The portion of the conductive sheet C2 that contacts the conductive contact sheet C5 is provided with a long rib C21. By adopting the above scheme, a line connection is achieved between the conductive sheet C2 and the conductive contact sheet C5, and the contact effect is better.

[0037] In the embodiment of the present invention, the lower end of the lever B1 is provided with an arc surface B12, and the arc surface B12 cooperates with the bracket C3 to push the bracket C3 to move; by adopting the above solution, the directions of the pushing forces between the lever B1 and the bracket C3 are consistent.

[0038] In the embodiment of the present invention, the handle mechanism A includes a circuit breaker handle A1, a leakage handle A2 and a leakage torsion spring A3. The circuit breaker handle A1 and the leakage handle A2 are arranged in parallel. In the embodiment of the present invention, the circuit breaker handle A1 is provided with a mounting hole, and the mounting hole is provided with a pin A11. The leakage handle A2 includes a connecting portion A21 and a protruding portion A22. The connecting portion A21 is provided with a mounting through hole A211, and the mounting through hole A211 is sleeved on the convex column of the leakage circuit breaker housing 2. The protruding portion A22 is fan-shaped as a whole, and a connecting hole A221 for connecting the connecting rod 3 is provided on the protruding portion A22. Both sides of the protruding portion A22 are first side surfaces A222. and the second side surface A223, wherein the first side surface A222 is a contact surface, which cooperates with the pin shaft A11, and the pin shaft A11 can push the contact surface to realize the closing of the leakage handle A2 during the closing process of the leakage circuit breaker; adopting the above scheme, during the closing process of the circuit breaker handle A1, the pin shaft A11 can push the leakage handle A2 by pushing the first side surface A222, and finally realize the closing of the leakage circuit breaker. During the opening, if it is a leakage opening, the first side surface A222 of the leakage handle A2 pushes the pin shaft A11 to realize the opening of the entire circuit breaker. If it is an opening due to other reasons, the leakage handle A2 does not rotate, so that the opening situation of the circuit breaker can be distinguished.

[0039] In an embodiment of the present invention, the leakage torsion spring A3 is sleeved on the protruding column on which the leakage handle A2 is installed on the leakage circuit breaker housing 2. A slot A212 is provided on the leakage handle A2 and near the second side surface. The first extension leg A31 of the leakage torsion spring A3 is placed in the slot A212. The second extension leg A32 of the leakage torsion spring A3 abuts against the protrusion of the leakage circuit breaker housing 2. The leakage torsion spring A3 generates a torque for rotating the leakage handle A2 in the disconnecting direction. By adopting the above scheme, it is very convenient to install the leakage torsion spring A3 and the structure is reasonable. The second side surface A223 of the protruding portion A22 is the positioning abutting edge of the leakage handle A2 after closing. After closing, the abutting edge abuts or closely cooperates with the baffle on the housing 2 of the leakage circuit breaker. The second side surface A223 of the protruding portion A22 limits the rotation angle of the leakage handle A2 after closing, so as to protect the leakage handle A2 well.

Claims

1. A leakage tripping device for a leakage circuit breaker, characterized in that: The invention comprises a handle mechanism, a leakage action mechanism, a power-taking mechanism and a tripping mechanism, wherein the leakage action mechanism comprises a lever, a jumper, a lock and a torsion spring, the lever is hingedly arranged on the housing of the leakage circuit breaker through a first pin shaft, and the lock is also rotatably arranged through the first pin shaft, the jumper is hingedly arranged on the upper end of the lever, the jumper is connected to the leakage handle in the handle mechanism through a connecting rod, the lock comprises a first extension foot and a second extension foot, wherein a card platform is arranged on the upper end of the first extension foot, after the leakage circuit breaker is closed, the lock is positioned on the lever through the card platform and the jumper engagement, the torsion force of the torsion spring acts on the second extension foot of the lock to cause the card platform on the first extension foot of the lock to engage with the jumper, the tripping mechanism comprises a tripper and a push block, the tripper can drive the push block to move, the push block is arranged below the second extension foot of the lock and facing the second extension foot, the push block can push the second extension foot to realize the rotation of the lock, and the rotation of the lock can separate the card platform from the jumper to release the positioning of the lever, the power-taking mechanism comprises a tripper arranged on the circuit breaker The conductive sheets on the housing of the circuit breaker are provided with at least two groups of conductive sheets, and the adjacent two groups of conductive sheets are separated and aligned. Each group of conductive sheets includes a first conductive sheet and a second conductive sheet, and the first and second conductive sheets are arranged at intervals. A slide groove is provided on the circuit breaker housing and located between the first and second conductive sheets, and a baffle is provided at one end of the slide groove. A bracket is provided on the slide groove, and a resistance spring is provided between one end of the bracket and the baffle. The bracket slides with the slide groove, and the other end of the bracket corresponds to a lever. The lever can push the bracket to move by rotating. The bracket is provided with mounting holes corresponding to each group of conductive sheets, and a conductive contact sheet is provided in the mounting hole. During the closing process of the leakage circuit breaker, the bracket is pushed by the lever to overcome the elastic force of the resistance spring and move, and then the two ends of the conductive contact sheet contact with the first and second conductive sheets of the corresponding group of conductive sheets, so that the first and second conductive sheets of the group of conductive sheets are electrically connected. When the leakage circuit breaker is disconnected from the leakage, the lever moves under the action of the bracket and the resistance spring, and then the two ends of the conductive contact sheet are disconnected from the first and second conductive sheets.

2. The leakage tripping device of the leakage circuit breaker according to claim 1, characterized in that: It also includes a partition, which is fixedly arranged on the housing of the circuit breaker, and is provided with a guide groove and a convex column. The push block and the guide groove form a guiding sliding fit, the torsion spring is sleeved on the convex column, and the second extension foot of the lock is provided with a torsion spring abutting column and a paddle. A torsion spring abutting arm abuts against the torsion spring abutting column, and the connecting rod of other action mechanisms of the leakage circuit breaker is placed on the paddle. When the lock is pushed by the push block, the paddle can drive the connecting rod to move to realize the action of other action mechanisms of the leakage circuit breaker. A display panel is provided on the upper end of the lever, and a hole for the display panel to display is provided on the circuit breaker housing.

3. The leakage tripping device of the leakage circuit breaker according to claim 1 or 2, characterized in that: The bracket is composed of an upper and a lower part which are integrally arranged, wherein the upper part is a mounting part, and the lower part is a sliding part, wherein a long groove is arranged on the bottom surface of the sliding part, and a guide block is arranged in the middle of the sliding groove. After the sliding part is placed in the sliding groove, the guide block is just placed in the long groove on the bottom surface of the sliding part to form a guided sliding match between the bracket and the sliding groove. The width of the mounting hole on the mounting part is greater than the thickness of the conductive contact piece. After the conductive contact piece is placed in the mounting hole, it is pressed on one side of the mounting hole by a spring. When the conductive contact piece contacts the first and second conductive pieces, it can overcome the elastic force of the spring on the conductive contact piece; a boss is arranged on one side of the conductive contact piece, and the conductive contact piece A boss is arranged on the inner wall of the mounting hole, one end of the spring is fixed on the boss, and the other end is fixed on the boss, a notch is arranged on the upper side of the conductive contact piece, the notch is opposite to the width of the upper side surface of the mounting hole, the notch is clamped on both sides of the upper side surface of the mounting hole to realize sliding fixation between the conductive contact piece and the bracket, a positioning guide convex strip is arranged on the upper top surface of the mounting portion, a guide groove which forms a guiding sliding match with the guide convex strip is arranged on the circuit breaker housing, the two ends of the conductive piece on the circuit breaker housing and located on the fixing holes are respectively arranged, the two ends of the conductive piece are respectively inserted into the fixing holes, and a long convex rib is arranged at the position of the conductive piece in contact with the conductive contact piece.

4. The leakage tripping device of the leakage circuit breaker according to claim 1 or 2, characterized in that: The lower end of the lever is provided with an arc surface, and the arc surface cooperates with the bracket to push the bracket to move.

5. The leakage tripping device of the leakage circuit breaker according to claim 1 or 2, characterized in that: The handle mechanism includes a leakage circuit breaker handle, a leakage handle and a leakage torsion spring. The leakage circuit breaker handle and the leakage handle are arranged in parallel. The leakage circuit breaker handle is provided with a mounting hole, and the mounting hole is provided with a pin shaft. The leakage handle includes a connecting portion and a protruding portion. The connecting portion is provided with a mounting through hole, and the mounting through hole is sleeved on the convex column of the leakage circuit breaker housing. The protruding portion is fan-shaped as a whole, and the protruding portion is provided with a connecting hole for connecting a connecting rod. The two sides of the protruding portion are a first side surface and a second side surface, wherein the first side surface is a contact surface, and the contact surface cooperates with the pin shaft. During the closing process of the leakage circuit breaker, the pin shaft can push the contact surface to realize the closing of the leakage handle.

6. The leakage tripping device of the leakage circuit breaker according to claim 5, characterized in that: The leakage torsion spring is sleeved on the convex column of the leakage circuit breaker housing on which the leakage handle is installed. A slot is provided on the leakage handle and close to the second side surface. The first extension leg of the leakage torsion spring is placed in the slot. The second extension leg of the leakage torsion spring abuts against the convex block of the leakage circuit breaker housing. The leakage torsion spring generates a torque for the leakage handle to rotate in the disconnecting direction. The second side surface of the protruding portion is a positioning abutting edge for the leakage handle after closing. After closing, the abutting edge abuts against or closely fits with a baffle on the housing of the leakage circuit breaker.

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