Circuit breaker

Abstract

A circuit breaker comprises a circuit breaker body and an accessory module, the circuit breaker body comprises a shell, an operating system and a tripping system, the accessory module comprises an accessory shell, an operating mechanism, a contact mechanism and a shunt tripping mechanism, and the contact mechanism comprises an auxiliary moving contact and an auxiliary static contact. A moving assembly and an auxiliary moving contact of the shunt tripping mechanism are respectively connected with a first linkage piece and a second linkage piece, the first linkage piece and the second linkage piece are respectively matched with the operating system, the shunt tripping mechanism triggers the operating mechanism to trip, the auxiliary moving contact performs opening rotation along with tripping of the operating mechanism, the second linkage piece triggers the operating system to trip, and the operating system is connected with the shunt tripping mechanism. Or, the tripping system triggers the operation system to trip, the tripping rotation of the operation system drives the first linkage piece, and the operation mechanism is triggered by the moving assembly to trip. According to the invention, the accessory module and the circuit breaker body form a modular structure for assembly, and the modular structure has the advantages of simple structure, few linkage parts and high modularization degree, and is beneficial to assembly.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, and in particular to a circuit breaker. Background Art

[0002] The residual current operated circuit breaker plays the residual current protection function in the line. When used at a long distance, if it is necessary to trip the product through a signal, the product structure needs to be improved and designed to have the function of remote tripping, that is, a shunt tripping mechanism is set for the circuit breaker body, and the shunt tripping mechanism triggers the operating system of the circuit breaker body to trip. However, the following problems exist in the existing products: First, the shunt tripping mechanism is set inside the circuit breaker body, which increases the complexity of the product, is not conducive to forming a modular structure, and causes inconvenience in disassembly and assembly; second, the existing circuit breaker body that does not have the shunt tripping mechanism function is limited by the internal structure. If its structure is not modified on a large scale, the shunt tripping mechanism cannot be assembled in the existing circuit breaker body. Summary of the invention

[0003] The object of the present invention is to overcome at least one defect of the prior art and provide a circuit breaker with simple structure, high reliability and convenient assembly.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention provides a circuit breaker, comprising a circuit breaker body and an accessory module assembled with each other, wherein the circuit breaker body comprises a shell, an operating system and a tripping system arranged in the shell, wherein the accessory module comprises an accessory housing, the accessory housing, an operating mechanism, a contact mechanism and a shunt tripping mechanism arranged in the accessory housing, wherein the contact mechanism comprises an auxiliary moving contact and an auxiliary static contact that cooperate with each other, wherein the auxiliary moving contact is linked to the operating mechanism, wherein the shunt tripping mechanism is used to trigger the tripping of the operating mechanism, wherein the moving component and the auxiliary moving contact of the shunt tripping mechanism are respectively connected with a first linkage member and a second linkage member, wherein the first linkage member and the second linkage member cooperate with the operating system respectively,

[0006] The shunt tripping mechanism triggers the operating mechanism to trip, and the auxiliary moving contact rotates to open the gate as the operating mechanism trips, and the second linkage member triggers the operating system to trip. Alternatively, the tripping system triggers the operating system to trip, and the tripping rotation of the operating system drives the first linkage member, and the moving component triggers the operating mechanism to trip.

[0007] Preferably, the moving trajectory of the first linkage member is a straight line.

[0008] Preferably, a first linkage hole is provided on one side of the accessory shell adjacent to the outer shell, and the first linkage member passes through the first linkage hole, and a moving track of the first linkage member is limited by the first linkage hole.

[0009] Preferably, the side walls adjacent to the outer shell and the accessory shell are each provided with a second linkage hole, the second linkage hole is for the second linkage member to pass through, and the movement trajectory of the second linkage member in the second linkage hole is an arc.

[0010] Preferably, a splicing structure is provided between the outer shell and the accessory shell, and the splicing structure comprises a card slot and a card buckle that cooperate with each other.

[0011] Preferably, the operating mechanism includes a rotatably assembled auxiliary lever, the auxiliary lever is driven to cooperate with the auxiliary moving contact, and the auxiliary lever is rotatably assembled with an auxiliary jump buckle and an auxiliary lock buckle, the auxiliary jump buckle is snap-fitted with one end of the auxiliary lock buckle, and the other end of the auxiliary lock buckle cooperates with the moving component.

[0012] Preferably, the auxiliary moving contact includes an auxiliary support, one end of the auxiliary support is linked to the operating mechanism, the other end side wall of the auxiliary support is provided with a second linkage member, a moving contact piece is provided on the auxiliary support adjacent to the second linkage member, and an auxiliary moving contact point is provided at one end of the moving contact piece away from the auxiliary lever.

[0013] Preferably, the shunt tripping mechanism includes a coil assembly and a magnetic conductive part, the coil assembly and the magnetic conductive part cooperate to generate a magnetic field to drive a moving assembly, the moving assembly includes an armature and a reset part, the armature is rotatably assembled and provided with a first linkage part, and the reset part cooperates with the armature to provide a reset force for the armature.

[0014] Preferably, the operating system includes a trip interlock assembly, which includes a pusher, a jumper, a first lock buckle and a second lock buckle. The pusher and the jumper are rotatably assembled on one side of the housing, the first lock buckle and the second lock buckle are engaged with each other and are respectively rotatably assembled on the other side of the housing, the first lock buckle is snap-fitted with the jumper, the second lock buckle is snap-fitted with the pusher, and the pusher is snap-fitted with the leakage release of the tripping system.

[0015] After the operating mechanism is tripped, the second locking member is pushed by the second linkage to rotate to trigger the operating system to trip. Alternatively, when the operating system is tripped, the tripping member drives the first linkage to cause the moving component to trigger the operating mechanism to trip.

[0016] Preferably, the second lock includes a rotatably assembled rotating shaft body, a circumferential side wall of the rotating shaft body is provided with an engagement groove, and two ends of the rotating shaft body are provided with a first matching portion and a second matching portion, the first matching portion is snap-fitted with the pushing member, and the second matching portion is matched with the second linkage member.

[0017] Preferably, the operating system comprises a fixed plate and a connecting rod assembly, and the connecting rod assembly and the tripping interlocking assembly are respectively rotatably assembled on the same side of the fixed plate and are linked and connected in sequence.

[0018] Preferably, the fixing plate is provided with a third linkage hole, and the third linkage hole corresponds to the first linkage hole provided in the accessory shell and the outer shell, and the first linkage member passes through the first linkage hole and the third linkage hole to cooperate with the operating system.

[0019] Preferably, the outer shell is rotatably equipped with a handle assembly, the handle assembly is linked to the operating system, the accessory shell is rotatably equipped with a handle mechanism, the handle mechanism is linked to the operating mechanism, and the handle assemblies are linked to each other.

[0020] Preferably, the circuit breaker body includes at least one contact unit, the contact unit includes a pair of wiring terminals and a contact system, the contact system is arranged between the pair of wiring terminals, the contact system includes a moving contact and a static contact that cooperate with each other, the moving contact is linked to the operating system, and the static contact is fixedly arranged in the housing.

[0021] The circuit breaker of the present invention, the accessory module and the circuit breaker body form a modular structure for assembly, wherein the accessory module and the circuit breaker body can drive each other to trip through the first linkage member and the second linkage member, which has the advantages of simple structure, few linkage parts and high modularity, and is conducive to assembly.

[0022] In addition, the accessory shell and the outer shell are assembled through buckles and slots, which has the advantage of convenient disassembly and assembly.

[0023] In addition, only the second lock in the operating system needs to be replaced, with little improvement on the internal structure of the existing circuit breaker body, and the applicability is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the matching of the circuit breaker body and the accessory module in the present invention (excluding the outer shell and the accessory housing);

[0025] Figure 2 It is a schematic diagram of the coordination of the leakage release and the lever in the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the circuit breaker body after the outer shell is removed in the present invention;

[0027] Figure 4 is a schematic diagram of the structure of the operating system of the present invention (without the fixing plate);

[0028] Figure 5 It is a schematic diagram of the structure of the operating system and the lever in the present invention;

[0029] Figure 6 It is a structural schematic diagram of the lever in the present invention;

[0030] Figure 7is a schematic structural diagram of the second lock buckle in the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the outer shell and the accessory shell in the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure of the accessory module in the present invention;

[0033] Fig.10 It is a structural schematic diagram of the side of the accessory module facing away from the circuit breaker body in the present invention;

[0034] Fig.11 It is a schematic diagram of the cooperation between the operating mechanism and the contact mechanism in the present invention;

[0035] Fig.12 It is a structural schematic diagram of the side of the accessory module facing the circuit breaker body in the present invention;

[0036] Fig.13 It is a schematic diagram of the coordination of the operating mechanism, the contact mechanism and the tripping mechanism in the present invention;

[0037] Fig.14 It is an exploded schematic diagram of the auxiliary moving contact in the present invention;

[0038] Fig.15 It is a structural schematic diagram of the shunt tripping mechanism in the present invention facing the circuit breaker body;

[0039] Fig.16 yes Fig.15 Schematic diagram of the decomposition of

[0040] Fig.17 It is a structural schematic diagram of the side of the shunt tripping mechanism facing away from the circuit breaker body in the present invention;

[0041] Fig.18 yes Fig.17 Schematic diagram of the decomposition of

[0042] Reference numerals:

[0043] 1- accessory module, 10- accessory housing, 101- limiting boss, 102- partition plate, 103- abutting boss, 11- handle mechanism, 111- auxiliary handle, 112- auxiliary connecting rod, 12- operating mechanism, 121- auxiliary lever, 122- auxiliary trip buckle, 123- auxiliary lock buckle, 13- shunt tripping mechanism, 130- coil assembly, 131- electromagnetic coil 131, 132- coil skeleton, 133- magnetic conductive part, 1331- connecting part, 1332- limiting arm, 134- armature, 1341- rotating end, 1340- suction area, 1342- moving end, 135- reset part, 141- auxiliary moving contact, 1411- auxiliary support, 1412- moving contact piece, 1413- auxiliary moving contact, 142- Auxiliary static contact, 151-first linkage member, 152-second linkage member, 16-connecting member, a-first linkage hole, b-second linkage hole, c-clip, d-slot, 2-circuit breaker body, 20-housing, 21-handle assembly, 22-operating system, 221-connecting rod, 222-lever, 2220-linkage shaft, 2221-protrusion, 2222-installation portion, 223-pushing member, 224-jump buckle, 225-first lock buckle, 226-second lock buckle, 2261-engaging groove, 2262-first matching portion, 2263-second matching portion, 227-fixing plate, 2271-third linkage hole, 23-leakage releaser, 24-contact unit, 241-connecting terminal, 242-moving contact, 243-static contact. DETAILED DESCRIPTION

[0044] The specific implementation of the circuit breaker of the present invention is further described below in conjunction with the embodiments given in the accompanying drawings. The circuit breaker of the present invention is not limited to the description of the following embodiments.

[0045] The circuit breaker includes a circuit breaker body 2, the circuit breaker body 2 includes a housing 20, the housing 20 is rotatably equipped with a handle assembly 21, an operating system 22 is arranged in the housing 20, the operating system 22 is linked to the handle assembly 21, the tripping system cooperates with the operating system 22 to trigger the operating system 22 to trip, one or more contact units 24 are arranged in the housing 20, each contact unit 24 includes a pair of wiring terminals 241 and a contact system, the pair of wiring terminals 241 are arranged at intervals, the contact system is arranged between the pair of wiring terminals 241, and the contact system includes mutually matched The movable contact 242 and the stationary contact 243 are electrically connected to the adjacent wiring terminals 241 respectively. The movable contact 242 of at least one contact unit 24 is linked with the operating system 22. The stationary contact 243 is fixedly arranged in the housing 20. The operating handle assembly 21 is used to make the operating system 22 drive the movable contact 242 to rotate toward or away from the stationary contact 243, thereby connecting or disconnecting the main line of each contact unit 24. The movable contacts 242 of two adjacent contact units 24 are linked to realize synchronous closing and opening of the circuit breaker body 2.

[0046] A tripping system is also provided in the housing 20. The tripping system cooperates with the operating system 22 to trigger the tripping of the operating system 22. The tripping rotation of the operating system 22 drives the moving contact 242 to rotate in a direction away from the static contact 243. Specifically, the tripping system includes a control circuit board and a mutual inductor and a leakage release 23 respectively connected to the control circuit board. The mutual inductor is connected to the main line of each contact unit 24. The mutual inductor feeds back a current signal to the controller of the control circuit board. The controller outputs a control signal to drive the leakage protector to operate, so that the operating system 22 is tripped and the power is cut off. Of course, the tripping system can also include a test button and a test circuit, wherein the test circuit draws power from at least one main line of a contact unit 24, and the test circuit passes through the center hole of the mutual inductor. The test circuit is connected or terminated by the test button. The tripping system in the circuit breaker body 2 is the prior art.

[0047] The circuit breaker also includes an accessory module 1 with a shunt tripping function. The accessory module 1 is assembled with the circuit breaker body 2. The accessory module 1 includes an accessory housing 10. A handle mechanism 11 is rotatably mounted on the accessory housing 10. The handle mechanism 11 is linked to the handle assembly 21 of the circuit breaker body 2. An operating mechanism 12, a contact mechanism and a shunt tripping mechanism 13 are arranged in the accessory housing 10. The contact mechanism includes an auxiliary moving contact 141 and an auxiliary static contact 142 that cooperate with each other. The handle assembly 21, the operating mechanism 12 and the auxiliary moving contact 141 are linked in sequence. The shunt tripping mechanism 13 is used to trigger the operating mechanism 12 to trip. Specifically, the shunt tripping mechanism 13 includes a coil assembly 130 and a moving assembly driven by the coil assembly 130. The moving assembly cooperates with the operating mechanism 12. When the coil assembly 130 is energized, the operating mechanism 12 is triggered to trip by the moving assembly. Usually, the shunt tripping mechanism 13 is also used to drive the operating system 22 of the circuit breaker body 2 to trip, thereby realizing remote operation of the circuit breaker.

[0048] The improvement of this application is that Figure 1 As shown, the moving component and the auxiliary moving contact 141 of the shunt tripping mechanism 13 are respectively connected to the first linkage member 151 and the second linkage member 152, and the first linkage member 151 and the second linkage member 152 respectively cooperate with the operating system 22, and the shunt tripping mechanism 13 triggers the operating mechanism 12 to trip, and the auxiliary moving contact 141 rotates to open the gate as the operating mechanism 12 trips, and the operating system 22 is triggered to trip by the second linkage member 152, or, the tripping system triggers the operating system 22 to trip, and the tripping rotation of the operating system 22 drives the first linkage member 151, and the mobile component triggers the operating mechanism 12 to trip.

[0049] In this way, the accessory module 1 and the circuit breaker body 2 form a modular structure for assembly, wherein the accessory module 1 and the circuit breaker body 2 can drive each other to trip through the first linkage member 151 and the second linkage member 152. It has the advantages of simple structure, few linkage components and high degree of modularization, which is conducive to assembly.

[0050] Specifically, Figure 8As shown, a first linkage hole a is provided on one side of the accessory shell 10 adjacent to the outer shell 20, and the first linkage member 151 passes through the first linkage hole a to cooperate with the operating system 22. A second linkage hole b is provided on the side wall of the outer shell 20 adjacent to the accessory shell 10, and the second linkage hole b is for the second linkage member 152 to pass through and cooperate with the operating system 22. Only two linkage holes are provided in the accessory shell 10 and the outer shell 20, which is beneficial to ensure the closedness of the accessory module 1 and the circuit breaker body 2. Preferably, the moving trajectory of the first linkage member 151 is a straight line, which is beneficial to reducing the space occupied by the moving stroke of the first linkage member 151. The moving trajectory of the first linkage member 151 can be limited by the first linkage hole a, which is a bar-shaped hole; the moving trajectory of the second linkage member 152 is an arc, that is, the moving trajectory of the second linkage member 152 in the second linkage hole b is an arc, and the second linkage member 152 is an arc hole.

[0051] Furthermore, a splicing structure is provided between the accessory shell 10 and the outer shell 20, and the splicing structure includes a slot d and a buckle c that cooperate with each other, and has the advantage of convenient disassembly and assembly. Preferably, the buckle c is provided at the side position of the outer shell 20 and / or the accessory shell 10, and the slot d is cooperatedly opened at the side position of the accessory shell 10 and / or the outer shell 20. Of course, the assembling structure can also be other structures, such as mutually cooperating slide rails and slide grooves.

[0052] Combination Figure 1-18 A specific embodiment of a circuit breaker is provided.

[0053] like Figure 1-8 As shown, the circuit breaker includes a circuit breaker body 2, and the circuit breaker body 2 includes a shell 20. Usually, the shell 20 includes a base and a cover body covering the base. At least two pairs of wiring holes are opened at opposite ends of the base. For the convenience of description, the connection direction between the cover body and the base is taken as the first direction, and the connection line between each pair of wiring holes is taken as the second direction. Two adjacent pairs of wiring holes are arranged in parallel along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0054] like Figure 1-5As shown, the housing 20 is rotatably equipped with a handle assembly 21, one end of the handle assembly 21 passes through the handle hole set on the housing 20 and extends out of the housing 20, that is, the handle assembly 21 extends out of the housing 20 from the cover body, and the housing 20 is provided with an operating system 22, a tripping system and at least two contact units 24, each contact unit 24 is arranged in a base between a pair of wiring holes, and the contact unit 24 adopts the existing technology, and a pair of wiring terminals 241 of each contact unit 24 are respectively matched with a wiring hole of the base, that is, a pair of wiring terminals 241 are arranged at intervals in the second direction, and the contact system of the contact unit 24 It is arranged between a pair of wiring terminals 241, and the contact system includes a moving contact 242 and a static contact 243 that cooperate with each other. The moving contact 242 and the static contact 243 are respectively electrically connected to a pair of wiring terminals 241 to control the main line of each contact unit 24 to be on and off; in a first direction, the operating system 22 is located between the handle assembly 21 and the contact unit 24, and the handle assembly 21, the operating system 22 and the moving contact 242 are linked and connected in sequence, and the leakage release 23 of the tripping system and the operating system 22 are arranged in parallel along the third direction. When a leakage fault occurs, the leakage release 23 triggers the operating system 22 to trip.

[0055] like Figure 1 , 3-5, the operating system 22 includes a fixed plate 227, a connecting rod assembly and a release interlock assembly, the connecting rod assembly and the release interlock assembly are respectively rotatably assembled on the fixed plate 227, preferably, the handle assembly 21 is also assembled on the fixed plate 227, the handle assembly 21, the connecting rod assembly and the release interlock assembly are linked and connected in sequence, thereby forming a modular structure, which is convenient for its overall arrangement for use in the shell 20, wherein the connecting rod assembly includes a connecting rod 221 and a lever 222, the release interlock assembly includes a pushing member 223, a jumping buckle 224, a first locking buckle 225 and a second locking buckle 226, one end of the connecting rod 221 is connected to the handle assembly 21, in the second direction, the pushing member 223 and the jumping buckle 224 are respectively rotatably assembled in the shell 20 on the same side of the handle assembly 21 (fixed plate 227), the first locking buckle 225 and the second locking buckle 226 are engaged with each other and are respectively rotatably assembled in the shell 20 on the other side of the handle assembly 21 (fixed plate 227), in the first direction, the pushing member 223 and the second locking buckle 226 The buckle 226 is closer to the cover body, one end of the pusher 223 extends along the third direction and cooperates with the top rod of the leakage release 23, the middle part of the pusher 223 forms a buckle arm in the second direction, the buckle arm and the first matching part 2262 of the second lock buckle 226 are buckled to form a second buckle structure, one end of the jump buckle 224 and one end of the first lock buckle 225 are buckled in the second direction to form a first buckle structure, one side of the lever 222 is provided with a protrusion 2221, and the other end of the connecting rod 221 is buckled with the protrusion The part 2221 is connected and abuts against the jump buckle 224, and the lever 222 is provided with a mounting part 2222 for connecting the moving contact 242. In this embodiment, the lever 222 is provided with four mounting parts 2222, each mounting part 2222 is connected to a moving contact 242 of a contact unit 24, and two adjacent mounting parts 2222 are connected by a linkage shaft 2220, and the linkage shaft 2220 is arranged along a direction parallel to the third direction, and the protrusion 2221 is arranged on one of the mounting parts 2222.

[0056] The structure and matching method of the circuit breaker body 2 belong to the prior art. When the leakage release 23 receives a control signal, it drives the top rod to hit the push piece 223, and the push piece 223 rotates to disintegrate the second buckle structure. The rotating second lock buckle 226 drives the first lock buckle 225 to rotate, thereby disintegrating the first buckle structure. The trip buckle 224 rotates and drives the lever 222 to separate the moving contact 242 from the static contact 243, and the handle assembly 21 is then turned to the opening position.

[0057] like Figure 8-18As shown, the circuit breaker also includes an accessory module 1, which is assembled with the circuit breaker body 2 along the third direction. The accessory module 1 includes an accessory housing 10, and the accessory housing 10 is rotatably equipped with a handle mechanism 11, an operating mechanism 12, a contact mechanism, and a shunt tripping mechanism 13, wherein the handle mechanism 11, the operating mechanism 12 (contact mechanism), and the shunt tripping mechanism 13 are sequentially arranged along the first direction, and the handle mechanism 11 includes an auxiliary handle 111 and an auxiliary connecting rod 112, wherein the auxiliary handle 11 is rotatably assembled on the accessory housing 10, one end of the auxiliary connecting rod 112 is connected to the auxiliary handle 111, and the operating mechanism 1 2 comprises a rotationally assembled auxiliary lever 121, on which an auxiliary trip buckle 122 and an auxiliary lock buckle 123 are rotationally assembled, one end of the auxiliary connecting rod 112 is connected to the auxiliary trip buckle 122 and matched with the auxiliary lever 121, the auxiliary trip buckle 122 is snap-fitted with one end of the auxiliary lock buckle 123, the contact mechanism comprises an auxiliary static contact 142 and an auxiliary moving contact 141 that match each other, the auxiliary moving contact 141 is drivingly matched with the auxiliary lever 121, the auxiliary static contact 142 is spaced apart from the operating mechanism 12 in the second direction, the auxiliary moving contact 141 is spaced apart from the auxiliary static contact 142 in the first direction, Figure 10-13 In the embodiment, the auxiliary moving contact 141 is substantially parallel to the second direction, and the operating handle mechanism 11 can drive the auxiliary moving contact 141 to approach or move away from the auxiliary static contact 142, thereby realizing the opening and closing of the accessory module 1.

[0058] like Fig.10 , 12 As shown, the shunt tripping mechanism 13 is arranged on one side of the operating mechanism 12 and is used to trigger the operating mechanism 12 to trip. When the shunt tripping mechanism 13 receives the control command, the shunt tripping mechanism 13 triggers the operating mechanism 12 to trip. Specifically, the shunt tripping mechanism 13 includes a coil assembly 130, a magnetic conductive member 133 and a moving assembly. When the coil assembly 130 is energized, the coil assembly 130 and the magnetic conductive member 133 cooperate to form a magnetic field to drive the moving assembly. The moving assembly cooperates with the other end of the auxiliary lock buckle 123, and the auxiliary lock buckle 123 is driven by the moving assembly to rotate, thereby causing the operating mechanism 12 to trip.

[0059] When the accessory module 1 is assembled with the circuit breaker body 2, the circuit breaker as a whole has the function of remote operation, that is, after the accessory module 1 receives the tripping signal, the operating mechanism 12 of the accessory module 1 first trips and then drives the operating system 22 of the circuit breaker body 2 to trip; when the circuit breaker body 2 receives the tripping signal, the operating system 22 of the circuit breaker body 2 first trips and then drives the operating mechanism 12 of the accessory module 1 to trip.

[0060] Specific as Figure 8 , 13As shown in Figure 15, the moving component is provided with a first linkage member 151, and the auxiliary moving contact 141 is provided with a second linkage member 152. The first linkage member 151 and the second linkage member 152 extend out of the accessory housing 10 from the same side wall of the accessory housing 10. In this embodiment, the central axes of the first linkage member 151 and the second linkage member 152 are parallel to the third direction. When the accessory module 1 is assembled with the circuit breaker body 2, the first linkage member 151 and the second linkage member 152 respectively cooperate with the operating system 22 of the circuit breaker body 2. Correspondingly, a first linkage hole a is provided on one side of the accessory housing 10 adjacent to the outer shell 20, and a second linkage hole b is provided on one side of the accessory housing 10 adjacent to the outer shell 20. The first linkage hole a is provided on one side of the accessory housing 10 adjacent to the outer shell 20. The first linkage member 151 and the second linkage member 152 respectively pass through the first linkage hole a and the second linkage hole b to cooperate with the operating system 22.

[0061] The process of the accessory module 1 driving the circuit breaker body 2 to trip is as follows: after the shunt tripping mechanism 13 triggers the operating mechanism 12 of the accessory module 1 to trip, the auxiliary moving contact 141 rotates with the tripping and opening of the operating mechanism 12, and the second linkage member 152 triggers the operating system 22 to trip; the process of the circuit breaker body 2 driving the accessory module 1 to trip is as follows: after the leakage release 23 of the tripping system drives the operating system 22 to trip, the tripping rotation of the operating system 22 drives the first linkage member 151, and the moving component triggers the operating mechanism 12 to trip.

[0062] In this embodiment, the first linkage 151 cooperates with the jump buckle in the operating system 22, and the second linkage 152 cooperates with the second lock buckle 226 in the operating system 22. When the operating mechanism 12 is disengaged, the second linkage 152 pushes the second lock buckle 226 to rotate, so that the second buckle structure formed by the second lock buckle 226 and the pusher 223 is unlocked. At the same time, the rotation of the second lock buckle 226 drives the first lock buckle 225 to rotate, and the jump buckle 224 and the first lock buckle 225 form a first buckle structure to unlock, and the operating system 22 is disengaged; when the operating system 22 is disengaged, the rotation of the jump buckle 224 drives the first linkage 151 to move, and the first linkage 151 drives the moving component to push the auxiliary lock buckle 123 to rotate, so that the buckle cooperation formed by the auxiliary jump buckle 122 and the auxiliary lock buckle 123 is disintegrated, and the operating mechanism 12 is disengaged. Of course, the second linkage 152 can also cooperate with the first lock buckle 225.

[0063] In this embodiment, the existing circuit breaker body 2 is slightly modified, preferably as follows Figure 8 As shown, a splicing structure is provided between the housing 20 and the accessory housing 10, and the splicing structure includes a buckle c and a slot d that cooperate with each other, wherein the buckle c and the slot d are matched in number and are multiple, Figure 8In the embodiment, at least one card slot d is provided on the side of the shell 20, and a buckle c matching the card slot d is provided on the accessory shell 10; a first linkage hole a and a second linkage hole b are respectively provided on the side of the shell 20 facing the accessory module 1.

[0064] Further, the second lock buckle 226 is improved, such as Figure 7 As shown, the second lock buckle 226 includes a rotatably assembled rotating shaft body, and the circumferential side wall of the rotating shaft body is provided with a bite groove 2261 for cooperating with the first lock buckle 225. The two ends of the rotating shaft body are provided with a first matching portion 2262 and a second matching portion 2263. The first matching portion 2262 is snap-fitted with the pushing member 223, and the second matching portion 2263 is matched with the second linkage member 152. In the figure, the second matching portion 2263 is a bent rod structure. Compared with the existing second lock buckle 226, only the second matching portion 2263 is added, and the degree of modification of the second lock buckle 226 is relatively small. Compared with the operating system 22, only one second lock buckle 226 needs to be replaced, which is conducive to the modification of the existing product; of course, if the existing second lock buckle 226 has a protruding structure that can cooperate with the second linkage member 152, the second lock buckle 226 can also be left unchanged.

[0065] The fixing plate 227 is modified, and a hole is opened in the fixing plate 227 for the first linkage member 151 and the second linkage member 152 to pass through. Of course, when the area corresponding to the first linkage member 151 and the second linkage member 152 is a hollow area, the fixing plate 227 may not be modified. Figure 3 In the embodiment, a third linkage hole 2271 is provided in a region corresponding to the first linkage member 151, and the aperture of the third linkage hole 2271 is greater than or equal to the aperture of the first linkage hole a.

[0066] Combination Fig.14 A structure of an auxiliary moving contact 141 of this embodiment is provided, wherein the auxiliary moving contact 141 comprises an auxiliary support 1411 and a moving contact piece 1412. The auxiliary support 1411 is an overall straight plate structure, one end of the auxiliary support 1411 is driven and cooperated with the auxiliary lever 121 of the operating mechanism 12, and a second linkage member 152 is provided on the side wall of the other end of the auxiliary support 1411. The second linkage member 152 is a rod body, and the moving contact piece 1412 is fitted on the plate surface of the auxiliary support 1411, that is, the moving contact piece 1412 and the second linkage member 152 are respectively located on two adjacent planes of the auxiliary support 1411, and an auxiliary moving contact point 1413 is provided on the end of the moving contact piece 1412 away from the auxiliary lever 121, so that the shunt tripping mechanism 13 has more space for assembly and a reasonable layout.

[0067] In this embodiment, if Fig.10 , 12As shown in Figures 15-18, the shunt tripping mechanism 13 includes a coil assembly 130, a magnetic member 133 and a moving assembly. Similar to the existing structure, the opposite ends of the coil assembly 130 are respectively used as a driving end and a connecting end. The connection direction between the driving end and the connecting end is parallel to the second direction. The magnetic member 133 is arranged around the outer side of the coil assembly 130. A notch is provided on the side of the magnetic member 133 opposite to the driving end. The moving assembly includes an armature 134 and a reset member 135 for driving the armature 134 to reset. In this embodiment, the auxiliary lock 123 is pushed to rotate by one end of the armature 134 close to the operating mechanism 12. The first linkage member 151 is a rod structure that moves along the third The direction is set on the side wall of the armature 134, wherein the armature 134 is rotatably assembled on the outer side of the magnetic conductive member 133 and is spaced opposite to the driving end, that is, the armature 134 includes an attraction area 1340, one end of the attraction area 1340 is connected to a rotating end 1341, the rotating end 1341 is rotatably connected to the outer side of the magnetic conductive member 133, the attraction area 1340 is spaced opposite to the driving end and a gap is left between the notches, the other end of the attraction area 1340 is connected to a moving end 1342, and the extension direction of the moving end 1342 is at an angle to the extension direction of the attraction area 1340. Preferably, the angle between the moving end 1342 and the extension direction of the attraction area 1340 is close to 90°. Fig.10 , 12 In the figure, the moving trajectory of the mobile end 1342 is parallel to the second direction, and the end of the mobile end 1342 away from the attraction area 1340 is opposite to the operating mechanism 12 to trigger the operating mechanism 12 to trip, and the mobile end 1342 moves in a straight line along the outer side of the magnetic conductive part 133. The moving process occupies a small space and the moving stroke is controllable, which improves the coordination reliability between the shunt tripping mechanism 13 and other components.

[0068] Preferably, the moving trajectory of the first linkage member 151 of the present embodiment is a straight line, and its moving trajectory is parallel to the second direction. The moving trajectory of the first linkage member 151 is limited by the first linkage hole a, wherein the first linkage hole a is a strip hole, and the strip hole is opened along the second direction. The moving trajectory of the second linkage member 152 is arc-shaped, and correspondingly, the second linkage hole b is an arc-shaped hole. The moving trajectory of the second linkage member 152 is limited by the second linkage hole b. The first linkage hole a and the second linkage hole b are spaced apart in the second direction to avoid mutual interference between the first linkage member 151 and the second linkage member 152.

[0069] Furthermore, the moving track of the first linkage member 151 can also be limited by the cooperation of the moving component and the first linkage hole a, so as to avoid the first linkage member 151 being limited only by the first linkage hole a, so that the first linkage member 151 is excessively worn due to unbalanced force. Specifically, the other end of the suction area 1340 is connected to the moving end 1342, and the extension direction of the moving end 1342 forms an angle with the extension direction of the suction area 1340, so that the moving end 1342 and the edge of the magnetic conductive member 133 outside the notch slide together to move in a straight line, and the moving end 1342 of the armature 134 moves in a straight line along the outside of the magnetic conductive member 133, so that the moving end 1342 occupies a small space during the moving process, and the moving stroke is controllable, thereby improving the matching reliability of the shunt tripping mechanism 13 and other components. Preferably, the moving end 1342 is provided with a slide groove, and the edge of the magnetic conductive member 133 slides with the slide groove, which can further improve the matching stability and reduce the volume.

[0070] Combination Fig.10 , 12 , 13 and 15-18 provide a specific structure of a shunt tripping mechanism 13.

[0071] The shunt tripping mechanism 13 includes a coil assembly 130, a magnetic conductive part 133 and an armature 134. The two opposite ends of the coil assembly 130 serve as a driving end and a connecting end respectively. The coil assembly 130 includes a coil frame 132 and an electromagnetic coil 131 wound around the outside of the coil frame 132. The coil assembly 130 can adopt existing technology.

[0072] like Fig.16 , 18 As shown, the magnetic conductive member 133 is arranged around the outer side of the coil assembly 130, and a notch is opened on the side of the magnetic conductive member 133 opposite to the driving end. In the figure, the magnetic conductive member 133 is an integrated structure, including a U-shaped magnetic conductive frame and a limiting arm 1332. The opening of the U-shaped magnetic conductive frame serves as a notch, and a connecting portion 1331 is formed by extending from one side of the U-shaped magnetic conductive frame facing the notch. The connecting portion 1331 extends in a direction parallel to the central axis of the notch, and the connecting portion 1331 passes through the middle of the coil skeleton 132 in the direction from the connecting end to the driving end. The limiting arm 1332 is connected to one side of the notch, preferably as shown in FIG. Fig.16 , 18 As shown, the limiting arm 1332 is arranged obliquely and is obliquely opposite to the connecting portion 1331 , and one end of the limiting arm 1332 is connected to a side of the notch and extends outside the U-shaped magnetic conductive frame.

[0073] like Fig.10 , 12, 13 and 15-18, the armature 134 includes a rotating end 1341, a suction area 1340 and a moving end 1342 connected in sequence, the moving end 1342 is set at an angle with the extension direction of the suction area 1340, and the angle is approximately 90°, so that the armature 134 is formed into an L shape as a whole, the armature 134 is rotatably assembled on one side of the notch through the rotating end 1341, the moving end 1342 is set along the outer side of the magnetic conductive member 133, and the end of the moving end 1342 is opposite to the auxiliary lock 123 of the operating mechanism 12. In the figure, a sliding groove is opened on one side of the mobile end 1342 facing the magnetic conductive member 133, and the magnetic conductive member 133 The edge can be accommodated in the slide groove and slidably cooperate with the slide groove. The first linkage member 151 is connected to the side of the movable end 1342, and the first linkage member 151 and the first linkage hole a, the movable end 1342 and the magnetic conductive member 133 cooperate to move in a straight line; when the attraction area 1340 is close to the notch, the limit arm 1332 abuts against the attraction area 1340 to limit the swing range of the armature 134. Preferably, a limit groove is opened in the attraction area 1340. When the attraction area 1340 is close to the notch, the limit arm 1332 is slidably inserted into the limit groove, which further reduces the swing range of the armature 134 and helps to reduce the overall volume.

[0074] Furthermore, Fig.16 and 18 In the figure, the portion of the limit arm 1332 extending outside the U-shaped magnetic frame is adjacent to the rotating end 1341 of the armature 134. During the rotation of the armature 134, at least a portion of the attraction area 1340 remains connected to the limit arm 1332, so that the bracket can be omitted. In this way, the armature 134 can be directly rotatably connected to the accessory shell 10, that is, the armature 134 is rotatably matched with at least one side wall of the accessory shell 10. Preferably, a support groove is provided on the inner side of the accessory shell 10, and the armature 134 is directly rotatably assembled in the support groove, thereby omitting the bracket, saving parts and space.

[0075] A reset member 135 is connected to the side of the armature 134 facing away from the notch, and the reset member 135 provides a reset driving force for the armature 134. Figure 15-18 As shown, the reset member 135 includes an elastic plate, the middle part of the elastic plate is bent so that the elastic plate is V-shaped as a whole, one end of the elastic plate is attached to the side of the armature 134 facing away from the notch and is fixedly connected to the armature 134, and the other end of the elastic plate is fixedly connected or abutted. Preferably, an abutting boss 103 can also be provided in the accessory housing 10, and the other end of the reset member 135 abuts against the abutting boss 103. In addition, the reset member 135 can be a spring.

[0076] In this embodiment, if Fig.12 , 13As shown, a plurality of limiting bosses 101 are protruding from the accessory housing 10, at least one limiting boss 101 abuts against a side of the auxiliary moving contact 141 facing away from the auxiliary static contact 142, and at least two limiting bosses 101 are spaced apart and used to limit the opposite ends of the shunt tripping mechanism 13. Fig.13 In the embodiment, one of the limiting bosses 101 and the auxiliary static contact 142 is spaced apart in the first direction, and the auxiliary moving contact 141 swings between the limiting boss 101 and the auxiliary static contact 142; Fig.12 In the figure, two limiting bosses 101 are located in the middle of the accessory housing 10 and are spaced opposite to each other in the second direction, and the shunt tripping mechanism 13 is limited between the two limiting bosses 101. Preferably, one of the limiting bosses 101 can abut against the end of the armature 134 facing away from the coil assembly 130.

[0077] In addition, if Fig. 9 As shown, a wiring member 16 is provided in at least one end of the accessory housing 10, and the accessory housing 10 is provided with wiring holes corresponding to the wiring members 16. The number of the wiring members 16 is at least two. Preferably, all the wiring members 16 are provided at the same end of the accessory housing 10 and the shunt tripping mechanism 13 is spaced apart from the wiring members 16 in the second direction. Furthermore, a partition plate 102 is provided in the accessory housing 10. In the third direction, the partition plate 102 divides one end of the accessory housing 10 into two wiring cavities, and at least one wiring member 16 is provided in each wiring cavity. In the present embodiment, three wiring members 16 are provided in the accessory housing 10, wherein two wiring members 16 are provided in one wiring cavity, and the two wiring members 16 are spaced apart along the first direction, and the other wiring member 16 is located in the other wiring cavity.

[0078] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the accompanying drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0079] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A circuit breaker, comprising a circuit breaker body (2) and an accessory module (1) assembled with each other, the circuit breaker body (2) comprising a housing (20) and an operating system (22) and a tripping system arranged in the housing (20), the accessory module (1) comprising an accessory housing (10), the accessory housing (10) and an operating mechanism (12), a contact mechanism and a shunt tripping mechanism (13) arranged in the accessory housing (10), the contact mechanism comprising an auxiliary moving contact (141) and an auxiliary static contact (142) cooperating with each other, the auxiliary moving contact (141) being linked to the operating mechanism (12), the shunt tripping mechanism (13) being used to trigger the operating mechanism (12) to trip, characterized in that: The moving assembly and the auxiliary moving contact (141) of the shunt tripping mechanism (13) are respectively connected to a first linkage member (151) and a second linkage member (152); the first linkage member (151) and the second linkage member (152) are respectively matched with the operating system (22). The shunt tripping mechanism (13) triggers the operating mechanism (12) to trip, the auxiliary moving contact (141) rotates to open the switch as the operating mechanism (12) trips, and the second linkage member (152) triggers the operating system (22) to trip; or, the tripping system triggers the operating system (22) to trip, the tripping rotation of the operating system (22) drives the first linkage member (151), and the moving component triggers the operating mechanism (12) to trip.

2. The circuit breaker according to claim 1, characterized in that: The moving track of the first linkage member (151) is a straight line.

3. The circuit breaker according to claim 2, characterized in that: A first linkage hole (a) is provided on one side of the accessory housing (10) adjacent to the outer shell (20), and the first linkage member (151) passes through the first linkage hole (a), and the movement track of the first linkage member (151) is limited by the first linkage hole (a).

4. The circuit breaker according to claim 1, characterized in that: The side walls adjacent to the outer shell (20) and the accessory shell (10) are each provided with a second linkage hole (b), the second linkage hole (b) allowing the second linkage member (152) to pass through, and the movement trajectory of the second linkage member (152) in the second linkage hole (b) is an arc.

5. The circuit breaker according to claim 1, characterized in that: A splicing structure is provided between the outer shell (20) and the accessory shell (10), and the splicing structure comprises a card slot (d) and a card buckle (c) that cooperate with each other.

6. The circuit breaker according to claim 1, characterized in that: The operating mechanism (12) comprises a rotatably assembled auxiliary lever (121), the auxiliary lever (121) drivingly cooperates with an auxiliary moving contact (141), an auxiliary jump buckle (122) and an auxiliary lock buckle (123) are rotatably assembled on the auxiliary lever (121), the auxiliary jump buckle (122) is snap-fitted with one end of the auxiliary lock buckle (123), and the other end of the auxiliary lock buckle (123) cooperates with a moving component.

7. The circuit breaker according to claim 1, characterized in that: The auxiliary moving contact (141) comprises an auxiliary support (1411), one end of the auxiliary support (1411) is linked to the operating mechanism (12), the other end side wall of the auxiliary support (1411) is provided with a second linking member (152), a moving contact piece (1412) is provided on the auxiliary support (1411) adjacent to the second linking member (152), and an auxiliary moving contact point (1413) is provided at one end of the moving contact piece (1412) away from the auxiliary lever (121).

8. The circuit breaker according to claim 1, characterized in that: The shunt tripping mechanism (13) comprises a coil assembly (130) and a magnetic conductive member (133), wherein the coil assembly (130) cooperates with the magnetic conductive member (133) to generate a magnetic field to drive a moving assembly, wherein the moving assembly comprises an armature (134) and a reset member (135), wherein the armature (134) is rotatably assembled and provided with a first linkage member (151), and the reset member (135) cooperates with the armature (134) to provide a reset force for the armature (134).

9. The circuit breaker according to claim 1, characterized in that: The operating system (22) comprises a tripping interlocking assembly, the tripping interlocking assembly comprising a pushing member (223), a jumper (224), a first lock (225) and a second lock (226); the pushing member (223) and the jumper (224) are rotatably assembled on one side of the housing (20); the first lock (225) and the second lock (226) are mutually engaged and respectively rotatably assembled on the other side of the housing (20); the first lock (225) and the jumper (224) are snap-fitted; the second lock (226) and the pushing member (223) are snap-fitted; the pushing member (223) is engaged with a leakage releaser (23) of the tripping system; After the operating mechanism (12) is tripped, the second locking buckle (226) is pushed by the second linkage member (152) to rotate to trigger the operating system (22) to trip; or, when the operating system (22) is tripped, the tripping buckle (224) drives the first linkage member (151) to cause the moving component to trigger the operating mechanism (12) to trip.

10. The circuit breaker according to claim 9, characterized in that: The second lock buckle (226) comprises a rotatably assembled rotating shaft body, the circumferential side wall of the rotating shaft body is provided with an engaging groove (2261), and the two ends of the rotating shaft body are provided with a first matching portion (2262) and a second matching portion (2263), the first matching portion (2262) is snap-fitted with the pushing member (223), and the second matching portion (2263) is matched with the second linkage member (152).

Images