Tripping mechanism and circuit breaker

Abstract

The utility model provides a tripping mechanism and a circuit breaker, and relates to the technical field of electrical component equipment. The tripping mechanism comprises a mounting bracket, an armature and an elastic piece. The mounting bracket comprises a first side plate and a second side plate which are arranged at an interval, the first side plate and the second side plate are matched to form a mounting cavity, the armature is rotatably mounted in the mounting cavity, and the armature can rotate and strike a draw bar of the circuit breaker, so that the circuit breaker is in an instantaneous tripping state. The elastic pieces comprise the first elastic piece and the second elastic piece, one end of the first elastic piece is connected with the first side plate, and the other end of the first elastic piece is connected with the first position of the armature. One end of the second elastic piece is connected with the second side plate, the other end of the second elastic piece is connected with the second position of the armature, and the first position and the second position are arranged at intervals. According to the tripping mechanism provided by the embodiment of the invention, the possibility that the armature turns over relative to the mounting bracket can be reduced, the reliability of instantaneous tripping of the circuit breaker is improved, and the use performance of the circuit breaker is further ensured.

Description

Technical Field

[0001] This application relates to the technical field of electrical component devices, and particularly to a tripping mechanism and a circuit breaker. Background Art

[0002] A circuit breaker can protect a circuit. When a short circuit, overload, or other fault occurs in the current, the circuit breaker can switch from the closed state to the open state, so that no current passes through the circuit, reducing the possibility of further expansion of the fault.

[0003] The circuit breaker includes a tripping mechanism. When the circuit is in a short - circuit state, the tripping mechanism can act, making the circuit breaker in an instantaneous tripping state, so that the circuit is in an open - circuit state.

[0004] Based on the structure of the existing tripping mechanism, the tripping mechanism includes an installation bracket and an armature connected to each other. When the circuit is in a short - circuit state, there is a possibility that the armature rotates relative to the installation bracket, affecting the reliability of the instantaneous tripping of the circuit breaker and the service performance of the circuit breaker. Utility Model Content

[0005] This application provides a tripping mechanism and a circuit breaker to reduce the possibility of the armature rotating relative to the installation bracket, improve the reliability of the instantaneous tripping of the circuit breaker, and thus ensure the service performance of the circuit breaker.

[0006] In a first aspect, this application provides a tripping mechanism, which includes an installation bracket, an armature, and an elastic member.

[0007] The installation bracket includes a first side plate and a second side plate arranged at intervals, and the first side plate and the second side plate cooperate to form an installation cavity. The armature is rotatably installed in the installation cavity. The armature can rotate and strike the traction rod of the circuit breaker, making the circuit breaker in an instantaneous tripping state. The elastic member includes a first elastic member and a second elastic member. One end of the first elastic member is connected to the first side plate, and the other end of the first elastic member is connected to the first position of the armature. One end of the second elastic member is connected to the second side plate, and the other end of the second elastic member is connected to the second position of the armature. The first position and the second position are arranged at intervals.

[0008] The installation bracket can provide an installation carrier for the armature. In the case of a short circuit in the circuit, the armature can act to strike the traction rod of the circuit breaker, and then drive other structures of the circuit breaker to act, making the circuit breaker in an instantaneous tripping state.

[0009] The first elastic member and the second elastic member can be connected between the armature and the mounting bracket. The first elastic member is connected to the first side plate of the mounting bracket and the first position of the armature, and the second elastic member is installed at the second side plate of the mounting bracket and the second position of the armature. Based on this, the first elastic member and the second elastic member can limit the armature and the mounting bracket from different positions, reducing the possibility of the armature tipping over relative to the mounting bracket, ensuring the service performance of the tripping mechanism, and further ensuring the reliability of the instantaneous tripping function of the circuit breaker.

[0010] In some possible implementation manners, the mounting bracket further includes a connecting plate, a first connecting structure, and a second connecting structure. The connecting plate is used to connect the first side plate and the second side plate. The first connecting structure is disposed on the side of the first side plate away from the connecting plate, and one end of the first elastic member is connected to the first side plate through the first connecting structure. The second connecting structure is disposed on the side of the second side plate away from the connecting plate, and one end of the second elastic member is connected to the second side plate through the second connecting structure.

[0011] By providing the connecting plate, the connection between the first side plate and the second side plate can be realized. In addition, since the connecting plate is a part of the tripping mechanism, the connection between the bimetal sheet, the connecting plate and other structures and the tripping mechanism can be realized through the connection between the connecting plate and the bimetal sheet, the wiring board and other structures.

[0012] Since the first connecting structure is disposed on the first side plate, the connection between the first elastic member and the first side plate can be realized through the connection between the first connecting structure and the first side plate. Since the second connecting structure is disposed on the second side plate, the connection between the second elastic member and the second side plate can be realized through the connection between the second connecting structure and the second side plate.

[0013] In some possible implementation manners, the armature includes a first installation groove and a second installation groove, and the first installation groove and the second installation groove are arranged at intervals. The first connecting structure is set as a first protrusion, the first elastic member is sleeved on the first protrusion, one end of the first protrusion away from the first side plate penetrates through the first installation groove, one end of the first elastic member abuts against the first side plate, and the other end of the first elastic member abuts against the first position. The second connecting structure is set as a second protrusion, the second elastic member is sleeved on the second protrusion, one end of the second protrusion away from the second side plate penetrates through the second installation groove, one end of the second elastic member abuts against the second side plate, and the other end of the second elastic member abuts against the second position.

[0014] The first elastic member is sleeved on the first protrusion, and one end of the first protrusion away from the first side plate can penetrate through the first installation groove. Since the first installation groove is arranged on the armature and the first protrusion is arranged on the first side plate, and the first side plate is a part of the mounting bracket, the cooperation between the armature and the mounting bracket can be realized through the cooperation between the first protrusion and the first installation groove.

[0015] The second elastic member is sleeved on the second protrusion, and the end of the second protrusion away from the second side plate can be inserted into the second mounting groove. Since the second mounting groove is provided on the armature, the second protrusion is provided on the second side plate, and the second side plate is part of the mounting bracket, the armature and the mounting bracket can be matched by the second protrusion matching the second mounting groove.

[0016] In some possible implementations, at least a portion of the first protrusion overlaps with the rotation trajectory of the armature, and / or at least a portion of the second protrusion overlaps with the rotation trajectory of the armature.

[0017] Since the armature cooperates with the first protrusion through the first mounting groove, and at least part of the first protrusion overlaps with the rotation trajectory of the armature, the possibility of collision between the armature and the first protrusion can be reduced during the rotation of the armature. Furthermore, during the process of the armature pushing the traction rod, the possibility of the armature being unable to push the traction rod or the armature exerting a small force on the traction rod and being unable to drive other structures to move can be reduced.

[0018] In some possible implementations, a first limiting structure is provided at one end of the first protrusion away from the first side plate, and the first limiting structure is clamped to the side of the armature away from the first side plate. And / or, a second limiting structure is provided at one end of the second protrusion away from the second side plate, and the second limiting structure is clamped to the side of the armature away from the second side plate.

[0019] During the rotation of the armature, since the first limiting structure is provided with the first protrusion and the first limiting structure can be engaged with the armature, the connection reliability between the first protrusion and the armature can be ensured, and the possibility of separation between the armature and the first protrusion can be reduced, thereby ensuring the reliability of the use of the tripping mechanism.

[0020] In some possible implementations, the armature includes a connecting portion, an abutting portion and a striking portion, wherein the abutting portion connects the striking portion and the connecting portion. The connecting portion is provided with a first connecting structure and a second connecting structure. The abutting portion is rotatably connected to the mounting bracket. The striking portion is provided on a side of the abutting portion away from the connecting portion, and the striking portion is used to strike the traction rod.

[0021] Since the first connection structure is connected to the first elastic member and the first connection structure is provided at the connection portion, the connection between the first elastic member and the connection portion can be achieved through the first connection structure. Since the connection portion is a part of the armature, the connection between the first elastic member and the armature can be achieved through the first connection structure. Since the second connection structure is connected to the second elastic member and the second connection structure is provided at the connection portion, the connection between the second elastic member and the connection portion can be achieved through the second connection structure. Since the connection portion is a part of the armature, the connection between the second elastic member and the armature can be achieved through the second connection structure.

[0022] When the connecting portion moves toward the core, the abutting portion rotates relative to the mounting bracket following the movement of the connecting portion. Under the action of the rotation of the abutting portion, the striking portion moves toward the traction rod in a direction away from the mounting bracket to strike the traction rod, so that the traction rod directly or indirectly drives the contact mechanism to move under the action of the striking portion, thereby placing the circuit breaker in an open state.

[0023] In some possible implementations, the first side plate is provided with a first connection groove, one side of the abutting portion is provided with a first connection protrusion, and at least a portion of the first connection protrusion is passed through the first connection groove. The second side plate is provided with a second connection groove, the other side of the abutting portion is provided with a second connection protrusion, and at least a portion of the second connection protrusion is passed through the second connection groove.

[0024] Since the first connecting groove is provided on the first side plate, and the first connecting protrusion is provided on one side of the abutting portion, the armature can be connected to the first side plate by the cooperation between the first connecting protrusion and the first connecting groove. Since the second connecting groove is provided on the second side plate, and the second connecting protrusion is provided on one side of the abutting portion, the armature can be connected to the second side plate by the cooperation between the second connecting protrusion and the second connecting groove.

[0025] Furthermore, since the first side plate and the second side plate are part of the mounting bracket, the mounting bracket and the armature can be connected by the cooperation between the first connecting protrusion and the first connecting groove and the cooperation between the second connecting protrusion and the second connecting groove.

[0026] In some possible implementations, the first connecting groove includes a first sub-groove and a second sub-groove that are connected, the first sub-groove is arranged away from the connecting plate compared to the second sub-groove, and the size of the first sub-groove is smaller than the size of the second sub-groove along the direction from the first side plate toward the connecting plate.

[0027] The armature can enter the first sub-slot from the notch of the first sub-slot. Since the second sub-slot is connected to the first sub-slot, the armature can enter the second sub-slot through the first sub-slot and rotate in the second sub-slot. Since the size of the first sub-slot is smaller than the size of the second sub-slot along the assembly direction of the armature, the connection between the first sub-slot and the second sub-slot can limit the armature during the rotation of the armature in the second sub-slot, reduce the possibility of the armature detaching from the second sub-slot, and ensure the reliability of the connection between the armature and the mounting bracket.

[0028] In some possible implementations, the tripping mechanism further includes an adjusting screw, a mounting portion is provided on a side of the first side plate away from the armature, or a mounting portion is provided on a side of the second side plate away from the armature, and the mounting portion is substantially parallel to the connecting portion. The adjusting screw is movably connected to the mounting portion, and a side of the adjusting screw facing the abutting portion abuts against the abutting portion.

[0029] Compared with the prior art, in which an operator adjusts the connection relationship between the elastic member and the armature with the help of pliers or other tools, and then adjusts the force exerted by the armature on the traction rod, in the example of the present application, the force exerted by the abutting portion on the traction rod can be adjusted by adjusting the adjusting screw, so that the circuit breaker meets the factory inspection standard.

[0030] In addition, by adjusting the adjusting screw to adjust the force exerted by the armature on the traction rod, compared with the prior art, the bending of the armature can be reduced, the situation of stress concentration generated by the armature can be reduced, the use reliability of the armature can be ensured, and further the use reliability of the tripping mechanism can be ensured.

[0031] In a second aspect, the present application provides a circuit breaker, including a housing and a tripping mechanism in any possible implementation manner of the first aspect, and the tripping mechanism is installed in the housing.

[0032] For what is provided in the above second aspect and each possible design of the above second aspect, the beneficial effects can refer to the beneficial effects brought by the above first aspect and each possible implementation manner of the first aspect, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 FIG. 15 is a schematic structural diagram of a tripping mechanism in a first state provided by an example of the present application.

[0034] Figure 2 FIG. 19 is an exploded structural diagram of a tripping mechanism provided by an example of the present application.

[0035] Figure 3 FIG. 23 is a schematic structural diagram of a mounting bracket provided by an example of the present application.

[0036] Figure 4 FIG. 27 is a schematic structural diagram of an armature provided by an example of the present application.

[0037] Figure 5 FIG. 31 is a schematic structural diagram of a wiring board provided by an example of the present application.

[0038] Figure 6 FIG. 35 is a schematic structural diagram of a tripping mechanism in a second state provided by an example of the present application.

[0039] DESCRIPTION OF THE REFERENCE NUMERALS:

[0040] 100, Trip mechanism; 110, Armature; 111, Connection part; 1111, First installation groove; 1112, Second installation groove; 112, Contact part; 1121, First connection projection; 1122, Second connection projection; 113, Striking part; 120, Mounting bracket; 121, First side plate; 1211, First connection structure; 1212, First connection groove; 122, Second side plate; 1221, Second connection structure; 1222, Second connection groove; 123, Connection plate; 124, Installation part; 130, Elastic member; 131, First elastic member; 132, Second elastic member; 140, Wiring board; 141, Current-carrying area; 150, Adjusting screw; 160, Bimetallic strip; 170, Iron core. Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the examples of this application clearer, the technical solutions in the examples of this application will be clearly and completely described below with reference to the accompanying drawings in the examples of this application. Apparently, the described examples are some but not all of the examples of this application. All other examples obtained by those of ordinary skill in the art based on the examples in this application without making creative efforts shall fall within the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the description of the examples of this application herein are only for the purpose of describing specific examples and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the drawings are intended to cover non-exclusive inclusion.

[0043] Reference to "example" in this text means that a particular feature, structure or characteristic described in connection with the example can be included in at least one example of this application. The phrase "example" appearing in various places in the description is not necessarily referring to the same example, nor is it an independent or alternative example mutually exclusive with other examples. Those skilled in the art will explicitly and implicitly understand that the examples described herein can be combined with other examples.

[0044] The term " / or" herein is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: the existence of A, the simultaneous existence of A and B, and the existence of B. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0045] The orientation terms appearing in the following description are all the directions shown in the drawings, and do not limit the specific structure of the trip mechanism and circuit breaker of this application.

[0046] In addition, in the description of the present application, the terms "first", "second", etc. in the description and claims of the present application or in the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0047] In the description of the present application, unless otherwise specified, the meaning of "a plurality" refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups).

[0048] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, the "connection" or "coupling" of a mechanical structure may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a spacer, such as a fixed connection through screws, bolts, or other spacers; a physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0049] A circuit breaker can protect a circuit. In the case of a circuit break, overload, or other faults, the circuit breaker can switch from the closed state to the open state, so that the circuit is in an open state, reducing the possibility of further expansion of the fault. The open state includes an instantaneous trip state, a delayed trip state, a normal open state, etc.

[0050] The circuit breaker may include a tripping mechanism. In the case of a short circuit in the circuit, the tripping mechanism can act, so that the circuit breaker is in an instantaneous trip state, and then the circuit is in an open state.

[0051] The existing tripping mechanism includes an installation bracket and an armature connected to each other, and the armature is rotatable relative to the installation bracket. Based on the structure of the existing tripping mechanism, an elastic member is connected to one side of the armature. During the operation of the tripping mechanism, the armature may flip to one side, which may affect the reliability of the instantaneous tripping of the circuit breaker and easily affect the use performance of the circuit breaker.

[0052] Based on the above, the present application provides an example of a tripping mechanism and a circuit breaker.

[0053] In order to enable those skilled in the art to better understand the solution of the present application, the tripping mechanism and the circuit breaker provided by the examples of the present application will be clearly and completely described below with reference to the drawings.

[0054] Exemplarily, the present application provides an example of a circuit breaker.

[0055] The circuit breaker may include a housing, a tripping mechanism, an operating mechanism, and other structures. The housing may include a receiving cavity, and the receiving cavity may provide an installation space for the tripping mechanism, the operating mechanism, and other structures.

[0056] The contact mechanism may include a moving contact and a static contact. The static contact is fixedly connected to the housing, and the moving contact is movably connected to the housing. When the moving contact and the static contact are in contact, the circuit breaker is in the closed state, the circuit is in the conducting state, and there is current flowing through the circuit. When the moving contact and the static contact are separated, the circuit breaker is in the open state, the circuit is in the open state, and there is no current passing through the circuit. The specific structure of the contact mechanism may be the same as the structure of the contact mechanism in the prior art. Regarding the specific structure of the contact mechanism, the examples of this application will not be described in detail.

[0057] When the circuit breaker is in a short circuit or severe overload condition, the tripping mechanism can operate, the tripping mechanism can drive the operating mechanism to operate, and then the operating mechanism drives the contact mechanism to operate, so that the circuit breaker switches from the closed state to the instantaneous tripping state.

[0058] The operating mechanism may include a traction rod. The operation of the tripping mechanism can drive the traction rod to operate, and the traction rod can drive other structures of the operating mechanism to operate, and then drive the contact mechanism to operate. The specific structure of the operating mechanism is similar to the specific structure of the operating mechanism in the prior art, and the examples of this application will not be described in detail here.

[0059] Regarding the specific structure of the tripping mechanism, please refer to the relevant description below.

[0060] Based on the above, the housing can provide an installation carrier for the tripping mechanism, the operating mechanism, the contact mechanism, and other structures. The tripping mechanism can make the circuit breaker in the instantaneous tripping state when the circuit is in a short circuit or severe overload condition, so that the circuit is in the open state, protecting the circuit and reducing the possibility of further expansion of faults in the circuit.

[0061] Next, the specific structure of the tripping mechanism will be described in detail.

[0062] To enable those skilled in the art to better understand the specific structure of the tripping mechanism, the tripping mechanism will be described in detail below with reference to the accompanying drawings.

[0063] Exemplarily, this application provides a tripping mechanism. Figure 1 It is a schematic structural diagram of a tripping mechanism in a first state provided by an example of this application. Figure 2 It is an exploded structural diagram of a tripping mechanism provided by an example of this application. The first state refers to the state of the tripping mechanism when the circuit breaker is operating normally.

[0064] Please refer to Figure 1 AndFigure 2 , the trip mechanism 100 may include a mounting bracket 120, an armature 110, and an elastic member 130.

[0065] The mounting bracket 120 may include a first side plate 121 and a second side plate 122 that are spaced apart. The first side plate 121 and the second side plate 122 cooperate to form a mounting cavity. The armature 110 is rotatably mounted in the mounting cavity. The armature 110 can rotate and strike the traction rod of the circuit breaker, causing the circuit breaker to be in an instantaneous trip state. The elastic member 130 may include a first elastic member 131 and a second elastic member 132. One end of the first elastic member 131 is connected to the first side plate 121, and the other end of the first elastic member 131 is connected to the first position of the armature 110. One end of the second elastic member 132 is connected to the second side plate 122, and the other end of the second elastic member 132 is connected to the second position of the armature 110. The first position and the second position are spaced apart.

[0066] The first side plate 121 and the second side plate 122 may be substantially parallel. Specifically, it can be understood that the first side plate 121 and the second side plate 122 are parallel, or the included angle formed by the first side plate 121 and the second side plate 122 is less than or equal to 10 degrees. The present application example does not make specific limitations on this.

[0067] There may be no connection structure between the first side plate 121 and the second side plate 122, or the first side plate 121 and the second side plate 122 may also be connected together through structures such as a connecting plate and a connecting rod.

[0068] The first side plate 121 and the second side plate 122 cooperate to form a mounting cavity, and the armature 110 can be rotatably mounted on the mounting bracket 120.

[0069] The first side plate 121 and the second side plate 122 may be provided with structures such as grooves and holes. Corresponding protrusions may be provided on both sides of the armature 110, and the protrusions can pass through the structures such as grooves and holes to achieve the rotatable connection of the armature 110 relative to the mounting bracket 120.

[0070] The first side plate 121 and the second side plate 122 may also be provided with protrusions, and holes, grooves and other structures are provided on both sides of the armature 110. The protrusions can pass through the holes, grooves and other structures to achieve the rotatable connection of the armature 110 relative to the mounting bracket 120. The present application example does not limit the specific implementation manner of the rotatable connection of the armature 110 to the mounting cavity.

[0071] The armature 110 may be provided with a striking feature, and the setting position of the striking feature may be spaced apart from the connection position where the armature 110 is connected to the mounting bracket 120. When the circuit breaker is in an instantaneous trip state, the armature 110 can rotate relative to the mounting bracket 120, and the striking feature can apply a force to the traction rod, causing the traction rod to start to move, and then driving the contact mechanism to move.

[0072] The elastic member 130 can be structures such as a spring or an elastic sheet, and the specific structure of the elastic member 130 is not limited in the examples of this application. The first elastic member 131 and the second elastic member 132 can be the same, or the first elastic member 131 and the second elastic member 132 can be different.

[0073] Only one first elastic member 131 can be provided. Multiple first elastic members 131 can also be provided. The number of the second elastic members 132 can be equal to the number of the first elastic members 131, or the number of the second elastic members 132 can be different from the number of the first elastic members 131, as long as the acting forces exerted on the armature 110 by the first elastic member 131 and the second elastic member 132 are basically the same.

[0074] In the following related descriptions, the examples of this application are only described by taking both the first elastic member 131 and the second elastic member 132 as springs as an example.

[0075] One end of the first elastic member 131 can be fixedly connected to the first side plate 121 by means of melting, bonding, etc., or one end of the first elastic member 131 can be detachably connected to the first side plate 121 by means of abutting, hanging, etc.

[0076] The other end of the first elastic member 131 can be fixedly connected to the first position of the armature 110 by means of melting, bonding, etc., or one end of the first elastic member 131 can be detachably connected to the first position of the armature 110 by means of abutting, hanging, etc.

[0077] One end of the second elastic member 132 can be fixedly connected to the second side plate 122 by means of melting, bonding, etc., or one end of the second elastic member 132 can be detachably connected to the second side plate 122 by means of abutting, hanging, etc.

[0078] The other end of the second elastic member 132 can be fixedly connected to the second position of the armature 110 by means of melting, bonding, etc., or one end of the second elastic member 132 can be detachably connected to the second position of the armature 110 by means of abutting, hanging, etc.

[0079] The first position can be the position where the armature 110 faces the first elastic member 131 and is connected to the first elastic member 131. The first position can be planar, or a connection structure can be provided at the first position. The specific implementation manner at the first position is not limited in the examples of this application.

[0080] The second position can be the position where the armature 110 faces the second elastic member 132 and is connected to the second elastic member 132. The second position can be planar, or a connection structure can be provided at the second position. The specific implementation manner at the second position is not limited in the examples of this application.

[0081] Based on the above, the mounting bracket 120 can provide a mounting carrier for the armature 110. In the case of a short circuit in the circuit, the armature 110 can act to strike the traction rod of the circuit breaker, thereby driving the actions of other structures of the circuit breaker, so that the circuit breaker is in an instantaneous tripping state.

[0082] The first elastic member 131 and the second elastic member 132 can be connected between the armature 110 and the mounting bracket 120. The first elastic member 131 is connected to the first side plate 121 of the mounting bracket 120 and the first position of the armature 110, and the second elastic member 132 is installed at the second side plate 122 of the mounting bracket 120 and the second position of the armature 110. Based on this, the first elastic member 131 and the second elastic member 132 can limit the armature 110 and the mounting bracket 120 from different positions, reducing the possibility of the armature 110 tipping over relative to the mounting bracket 120, ensuring the service performance of the tripping mechanism 100, and further ensuring the reliability of the instantaneous tripping function of the circuit breaker.

[0083] Based on the tripping mechanism 100 provided in the above example, Figure 3 For a schematic structural view of a mounting bracket provided in an example of the present application, please refer to Figures 1 to 3 , the mounting bracket 120 may further include a connecting plate 123, a first connecting structure 1211, and a second connecting structure 1221. The connecting plate 123 is used to connect the first side plate 121 and the second side plate 122. The first connecting structure 1211 may be provided on the side of the first side plate 121 facing away from the connecting plate 123, and one end of the first elastic member 131 is connected to the first side plate 121 through the first connecting structure 1211. The second connecting structure 1221 may be provided on the side of the second side plate 122 facing away from the connecting plate 123, and one end of the second elastic member 132 is connected to the second side plate 122 through the second connecting structure 1221.

[0084] The connecting plate 123 may be provided on one side of the first side plate 121 and the second side plate 122. For example, the connecting plate 123 may be provided on the side of the first side plate 121 and the second side plate 122 facing away from the traction rod. The connecting plate 123 may also be provided in the middle of the first side plate 121 and the second side plate 122. By providing the connecting plate 123, the connection between the first side plate 121 and the second side plate 122 can be realized.

[0085] The connecting plate 123, the first side plate 121, and the second side plate 122 may be integrally formed, or the connecting plate 123, the first side plate 121, and the second side plate 122 may be fixedly connected by welding, riveting, etc.

[0086] The bimetallic strip 160, the terminal block 140 and other structures in the circuit breaker can also be connected to the connecting plate 123, and the bimetallic strip 160, the terminal block 140 and other structures can be connected to the connecting plate 123 by welding, riveting, threading, etc. Since the connecting plate 123 is a part of the mounting bracket 120, the bimetallic strip 160, the terminal block 140 and other structures can be connected to the mounting bracket 120 through the connection with the connecting plate 123, and then connected to the tripping mechanism 100.

[0087] The first connection structure 1211 is disposed on a side of the first side plate 121 away from the connection plate 123 . Specifically, the first connection structure 1211 may be disposed on a side of the first side plate 121 facing the traction rod.

[0088] The first connection structure 1211 may be a hole-like structure, specifically a through hole or a blind hole. The first connection structure 1211 may also be a groove-like structure. The first connection structure 1211 may also be a protrusion structure, etc.

[0089] The second connection structure 1221 is arranged at a similar position to the first connection structure 1211 . The second connection structure 1221 can be arranged on a side of the second side plate 122 away from the connection plate 123 . Specifically, the second connection structure 1221 can be arranged on a side of the second side plate 122 facing the traction rod.

[0090] The second connection structure 1221 may be a hole-like structure, specifically a through hole or a blind hole. The second connection structure 1221 may also be a groove-like structure. The second connection structure 1221 may also be a protrusion structure, etc.

[0091] Based on the above, the connection between the first side plate 121 and the second side plate 122 can be achieved by providing the connection plate 123. In addition, since the connection plate 123 is a part of the tripping mechanism 100, the connection between the bimetallic strip 160, the terminal block 140 and other structures can be achieved by connecting the connection plate 123 with the bimetallic strip 160, the connection plate 123 and other structures with the tripping mechanism 100.

[0092] Since the first connection structure 1211 is provided on the first side plate 121, the first elastic member 131 can be connected to the first side plate 121 through the connection between the first connection structure 1211 and the first side plate 121. Since the second connection structure 1221 is provided on the second side plate 122, the second elastic member 132 can be connected to the second side plate 122 through the connection between the second connection structure 1221 and the second side plate 122.

[0093] Based on the tripping mechanism 100 provided in the above example, Figure 4 For a schematic diagram of the structure of an armature provided for this application example, please refer to Figure 1 , Figure 2 and Figure 4The armature 110 may include a first mounting groove 1111 and a second mounting groove 1112, and the first mounting groove 1111 and the second mounting groove 1112 are arranged at intervals. The first connecting structure 1211 is set as a first protrusion, and the first elastic member 131 is sleeved on the first protrusion. The end of the first protrusion facing away from the first side plate 121 is inserted into the first mounting groove 1111, and one end of the first elastic member 131 abuts against the first side plate 121, and the other end of the first elastic member 131 abuts against the first position. The second connecting structure 1221 is set as a second protrusion, and the second elastic member 132 is sleeved on the second protrusion. The end of the second protrusion facing away from the second side plate 122 is inserted into the second mounting groove 1112, and one end of the second elastic member 132 abuts against the second side plate 122, and the other end of the second elastic member 132 abuts against the second position.

[0094] The specific implementation of the first mounting groove 1111 is similar to that of the second mounting groove 1112 , and the specific implementation of the first protrusion is similar to that of the second protrusion. Next, only the first mounting groove 1111 and the first protrusion are described as an example.

[0095] The setting position of the first installation groove 1111 may correspond to the setting position of the first protrusion, so as to ensure that the first protrusion can pass through the first installation groove 1111 and the first protrusion can rotate in the first installation groove 1111 .

[0096] Exemplarily, the setting position of the first installation groove 1111 may at least partially overlap with the first position.

[0097] The cross section of the first protrusion may be the same as the shape of the first installation groove 1111 , or may be different from the shape of the first installation groove 1111 , as long as the first protrusion can be inserted into the first installation groove 1111 .

[0098] For example, the cross section of the first protrusion may be circular, elliptical, rectangular or other shapes. The first protrusion may be a structure such as a convex column or a boss, and the present application example does not limit the specific implementation of the first protrusion.

[0099] Taking the example of the first protrusion being a prism-shaped structure, the first protrusion may be a straight prism, an oblique prism, or an arc-shaped prism, and this application example does not impose any specific limitation on this.

[0100] The first elastic member 131 may be sleeved on the first protrusion, and one end of the first elastic member 131 may abut against the outer wall of the first protrusion, or abut against the first side wall of the mounting bracket 120 .

[0101] When the armature 110 is engaged with the first elastic member 131, part of the first protrusion can pass through the first installation groove 1111, and the other end of the first elastic member 131 can abut against the groove wall of the first installation groove 1111. At this time, the groove wall of the first installation groove 1111 can be provided with an abutting protrusion, and the other end of the first elastic member 131 can specifically abut against the abutting protrusion. The other end of the first elastic member 131 can also abut against the side of the armature 110 facing the connecting plate 123, or be connected to the first position by other connection means.

[0102] Based on the above, the first elastic member 131 is sleeved on the first protrusion, and the end of the first protrusion away from the first side plate 121 can pass through the first installation groove 1111. Since the first installation groove 1111 is provided on the armature 110 and the first protrusion is provided on the first side plate 121, and the first side plate 121 is part of the mounting bracket 120, the cooperation between the armature 110 and the mounting bracket 120 can be realized through the cooperation between the first protrusion and the first installation groove 1111.

[0103] The second elastic member 132 is sleeved on the second protrusion, and the end of the second protrusion away from the second side plate 122 can pass through the second installation groove 1112. Since the second installation groove 1112 is provided on the armature 110 and the second protrusion is provided on the second side plate 122, and the second side plate 122 is part of the mounting bracket 120, the cooperation between the armature 110 and the mounting bracket 120 can be realized through the cooperation between the second protrusion and the second installation groove 1112.

[0104] Based on the release mechanism 100 provided in the above example, at least part of the first protrusion coincides with the rotation trajectory of the armature 110. And / or, at least part of the second protrusion coincides with the rotation trajectory of the armature 110.

[0105] When the first protrusion is in the shape of an arc-shaped prism, the curved shape of the arc-shaped prism can coincide with at least part of the rotation trajectory of the armature 110.

[0106] Since the armature 110 is engaged with the first protrusion through the first installation groove 1111, and at least part of the first protrusion coincides with the rotation trajectory of the armature 110, therefore, during the rotation of the armature 110, the possibility of collision between the armature 110 and the first protrusion can be reduced. Furthermore, during the process of the armature 110 pushing the traction rod, the possibility that the armature 110 cannot push the traction rod or applies a small force to the traction rod and cannot drive other structures to move due to collision with the first protrusion can be reduced.

[0107] Based on the tripping mechanism 100 provided in the above example, a first limiting structure (not shown in the figure) is provided at one end of the first protrusion facing away from the first side plate 121, and the first limiting structure can be clamped to the side of the armature 110 facing away from the first side plate 121. And / or, a second limiting structure is provided at one end of the second protrusion facing away from the second side plate 122, and the second limiting structure is clamped to the side of the armature 110 facing away from the second side plate 122.

[0108] The tripping mechanism 100 provided in the example of the present application may be provided with only the first limiting structure, or only the second limiting structure, or both the first limiting structure and the second limiting structure at the same time. The example of the present application does not make specific restrictions on this.

[0109] The first limiting structure may be a structure provided on the first protrusion, or the first limiting structure may be provided on the groove wall of the first mounting groove 1111. The first limiting structure may be a buckle, a clamping groove, a protrusion and other structures, as long as the first limiting structure can cooperate with the armature 110 when the first protrusion cooperates with the armature 110, and the cooperation reliability between the first protrusion and the armature 110 can be ensured.

[0110] The second limiting structure may be a structure provided on the second protrusion, or the second limiting structure may be provided on the groove wall of the second mounting groove 1112. The second limiting structure may be a buckle, a clamping groove, a protrusion and other structures, as long as the second limiting structure can cooperate with the armature 110 when the second protrusion cooperates with the armature 110, and the cooperation reliability between the second protrusion and the armature 110 can be ensured.

[0111] Based on the above, during the rotation of the armature 110, since the first limiting structure is provided with the first protrusion and the first limiting structure can be clamped to the armature 110, the connection reliability between the first protrusion and the armature 110 can be ensured, the possibility of the separation between the armature 110 and the first protrusion can be reduced, and further the use reliability of the tripping mechanism 100 can be ensured.

[0112] Based on the tripping mechanism 100 provided in the above example, the armature 110 may include a connecting portion 111, an abutting portion 112 and a striking portion 113. The abutting portion 112 connects the striking portion 113 and the connecting portion 111. The connecting portion 111 is provided with a first connecting structure 1211 and a second connecting structure 1221. The abutting portion 112 is rotatably connected to the mounting bracket 120. The striking portion 113 is provided on the side of the abutting portion 112 facing away from the connecting portion 111, and the striking portion 113 is used for striking the traction rod.

[0113] The connecting portion 111, the abutting portion 112 and the striking portion 113 may be integrally formed, or may be fixedly connected by welding or other means.

[0114] The abutting portion 112 may be provided between the connecting portion 111 and the striking portion 113 to realize the connection between the connecting portion 111 and the striking portion 113.

[0115] The first connection structure 1211 and the second connection structure 1221 are arranged at the connection part 111. Since the first connection structure 1211 can be connected to the first elastic member 131, and the second connection structure 1221 can be connected to the second elastic member 132.

[0116] Protrusions can be provided on both sides of the abutting part 112, and grooves can be provided on the first side plate 121 and the second side plate 122. The rotatable connection between the abutting part 112 and the mounting bracket 120 is realized through the cooperation of the protrusions and the grooves. Grooves can also be provided on both sides of the abutting part 112, and protrusions are provided on the first side plate 121 and the second side plate 122. The rotatable connection between the abutting part 112 and the mounting bracket 120 is realized through the cooperation of the protrusions and the grooves. Or the rotatable connection between the abutting part 112 and the mounting bracket 120 is realized in other ways, and the present application example does not make specific restrictions on this.

[0117] Figure 5 This is a schematic structural diagram of a wiring board provided by an example of the present application. Figure 6 This is a schematic structural diagram of a tripping mechanism in a second state provided by an example of the present application. The second state refers to the state of the tripping mechanism when the circuit breaker is in the instantaneous tripping state.

[0118] Please refer to Figure 2 、 Figure 5 and Figure 6 , the tripping mechanism 100 may further include an iron core 170. The iron core 170 is installed between the first side plate 121 and the second side plate 122 and is in contact with the wiring board 140. In the case of a short circuit or severe overload of the circuit breaker, a magnetic field can be generated in the current-carrying area 141 of the wiring board 140. This magnetic field can magnetize the iron core 170. At this time, the magnetic force F1 exerted by the iron core 170 on the connection part 111 can be greater than the acting force F2 exerted by the first elastic member 131 and the second elastic member 132 on the connection part 111. Based on this, the connection part 111 can move towards the iron core 170.

[0119] In addition, since the connection part 111 is connected to the abutting part 112 and the striking part 113, and the abutting part 112 is rotatably connected to the mounting bracket 120, when the connection part 111 moves towards the iron core 170, the abutting part 112 rotates relative to the mounting bracket 120 following the movement of the connection part 111. Under the action of the rotation of the abutting part 112, the striking part 113 moves towards the traction rod in the direction away from the mounting bracket 120 to strike the traction rod, so that the traction rod directly or indirectly drives the contact mechanism to act, making the circuit breaker in the open state.

[0120] Based on the above, since the first connection structure 1211 is connected to the first elastic member 131 and the first connection structure 1211 is provided on the connection portion 111, the connection between the first elastic member 131 and the connection portion 111 can be realized through the first connection structure 1211. Also, since the connection portion 111 is a part of the armature 110, the connection between the first elastic member 131 and the armature 110 can be realized through the first connection structure 1211. Since the second connection structure 1221 is connected to the second elastic member 132 and the second connection structure 1221 is provided on the connection portion 111, the connection between the second elastic member 132 and the connection portion 111 can be realized through the second connection structure 1221. Also, since the connection portion 111 is a part of the armature 110, the connection between the second elastic member 132 and the armature 110 can be realized through the second connection structure 1221.

[0121] When the connection portion 111 moves towards the iron core 170, the abutting portion 112 rotates relative to the mounting bracket 120 following the movement of the connection portion 111. Under the action of the rotation of the abutting portion 112, the striking portion 113 moves towards the traction rod in a direction away from the mounting bracket 120 to strike the traction rod, so that the traction rod directly or indirectly drives the contact mechanism to act, making the circuit breaker in the open state.

[0122] Based on the tripping mechanism 100 provided in the above example, please refer to Figure 1 , Figure 3 and Figure 4 , the first side plate 121 is provided with a first connection groove 1212, and one side of the abutting portion 112 is provided with a first connection protrusion 1121, and at least a part of the first connection protrusion 1121 penetrates through the first connection groove 1212. The second side plate 122 is provided with a second connection groove 1222, and the other side of the abutting portion 112 is provided with a second connection protrusion 1122, and at least a part of the second connection protrusion 1122 penetrates through the second connection groove 1222.

[0123] The shape of the first connection groove 1212 is adapted to the shape of the first connection protrusion 1121, as long as it is ensured that the first connection protrusion 1121 can rotate relative to the first connection groove 1212. The shape of the second connection groove 1222 is adapted to the shape of the second connection protrusion 1122, as long as it is ensured that the second connection protrusion 1122 can rotate relative to the second connection groove 1222. The specific implementation manners of the first connection groove 1212 and the first connection protrusion 1121, as well as the second connection groove 1222 and the second connection protrusion 1122, are not limited in the example of the present application.

[0124] Based on the above, since the first connection groove 1212 is provided on the first side plate 121 and the first connection protrusion 1121 is provided on one side of the abutting portion 112, the connection between the armature 110 and the first side plate 121 can be realized through the cooperation of the first connection protrusion 1121 and the first connection groove 1212. Since the second connection groove 1222 is provided on the second side plate 122 and the second connection protrusion 1122 is provided on one side of the abutting portion 112, the connection between the armature 110 and the second side plate 122 can be realized through the cooperation of the second connection protrusion 1122 and the second connection groove 1222.

[0125] Also, since the first side plate 121 and the second side plate 122 are part of the mounting bracket 120, therefore, the connection between the mounting bracket 120 and the armature 110 can be realized through the cooperation of the first connection protrusion 1121 and the first connection groove 1212 and the cooperation of the second connection protrusion 1122 and the second connection groove 1222.

[0126] Based on the release mechanism 100 provided in the above example, the first connection groove 1212 includes a first sub-groove and a second sub-groove that are communicated with each other. The first sub-groove is arranged away from the connection plate 123 compared with the second sub-groove. Along the direction of the first side plate 121 towards the connection plate 123, the size of the first sub-groove is smaller than that of the second sub-groove.

[0127] The first sub-groove can be rectangular, trapezoidal or other shapes. The shape of the second sub-groove can be the same as that of the first sub-groove, or different from that of the first sub-groove. The examples of the present application do not make specific limitations on this.

[0128] The armature 110 can enter the first sub-groove from the notch of the first sub-groove. Since the second sub-groove is communicated with the first sub-groove, the armature 110 can enter the second sub-groove via the first sub-groove and rotate in the second sub-groove. Since the size of the first sub-groove is smaller than that of the second sub-groove along the assembly direction of the armature 110, therefore, during the rotation of the armature 110 in the second sub-groove, the connection between the first sub-groove and the second sub-groove can limit the armature 110, reducing the possibility of the armature 110 disengaging from the second sub-groove and ensuring the connection reliability between the armature 110 and the mounting bracket 120.

[0129] Based on the release mechanism 100 provided in the above example, a third limiting structure (not shown in the figure) can be provided on the groove wall of the first sub-groove.

[0130] By providing the third limiting structure, the possibility of the armature 110 disengaging from the first connection groove 1212 can be further reduced, ensuring the connection reliability between the armature 110 and the mounting bracket 120.

[0131] Based on the release mechanism 100 provided in the above example, the structure of the second connection slot 1222 is similar to that of the first connection slot 1212. The second connection slot 1222 may include a third sub-slot and a fourth sub-slot, and the third sub-slot is disposed away from the connection plate 123 as compared with the fourth sub-slot. Along the direction of the second side plate 122 towards the connection plate 123, the size of the third connection slot is smaller than that of the fourth connection slot.

[0132] The function of the second connection slot 1222 is similar to that of the first connection slot 1212, and the examples of this application will not be elaborated again.

[0133] Based on the release mechanism 100 provided in the above example, the release mechanism 100 may further include an adjusting screw 150. An installation portion 124 is provided on the side of the first side plate 121 away from the armature 110, or an installation portion 124 is provided on the side of the second side plate 122 away from the armature 110. The installation portion 124 is substantially parallel to the connection portion 111. The adjusting screw 150 is movably connected to the installation portion 124, and the side of the adjusting screw 150 facing the abutting portion 112 abuts against the abutting portion 112.

[0134] The installation portion 124 may be a plate-like structure provided with a threaded hole, or other structures provided with a threaded hole, as long as it is ensured that the installation portion 124 can be reliably connected to the adjusting screw 150.

[0135] The installation portion 124 being substantially parallel to the connection portion 111 can be understood as the angle between the installation portion 124 and the connection portion 111 being greater than 0 degrees and less than or equal to 10 degrees.

[0136] The number of the installation portions 124 may be equal to the number of the abutting portions 112, and the installation portions 124 and the abutting portions 112 are in one-to-one correspondence. The number of the installation portions 124 may also be less than the number of the abutting portions 112. In this case, multiple installation portions 124 may correspond to one abutting portion 112, and the specific implementation manner of the installation portion 124 is not limited in the examples of this application.

[0137] Exemplarily, one installation portion 124 may be provided. At this time, the installation portion 124 may be connected to the first side plate 121, or the installation portion 124 may be connected to the second side plate 122.

[0138] Exemplarily, two installation portions (not shown in the figure) may also be provided. At this time, one installation portion may be connected to the first side plate 121, and the other installation portion may be connected to the second side plate 122.

[0139] The adjusting screw 150 may include a connected adjusting nut and a screw rod. The screw rod may pass through the mounting portion 124. The side of the screw rod facing the abutting portion 112 may abut against the abutting portion 112 to apply a force to the abutting portion 112. The adjusting nut may connect the screw rod to the mounting portion 124. The adjusting nut is threadedly connected to the screw rod. By adjusting the relative position of the adjusting nut and the screw rod, the length of the screw rod protruding from the connecting portion 111 can be adjusted, and thus the force applied by the screw rod to the abutting portion 112 can be adjusted. By adjusting the force applied to the abutting portion 112, the distance between the abutting portion 112 and the traction rod can be adjusted.

[0140] Based on the above, compared with the prior art in which an operator adjusts the connection relationship between the elastic member and the armature by means of pliers or other tools, and then adjusts the force applied by the armature to the traction rod, in the example of the present application, by adjusting the adjusting screw 150, the force applied by the abutting portion 112 to the traction rod can be adjusted, so that the circuit breaker meets the factory calibration standard.

[0141] In addition, by adjusting the force applied by the armature 110 to the traction rod through the adjusting screw 150, compared with the prior art, the bending of the armature 110 can be reduced, the situation of stress concentration generated by the armature 110 can be reduced, the use reliability of the armature 110 can be ensured, and thus the use reliability of the tripping mechanism 100 can be ensured.

[0142] Finally, it should be noted that the above embodiments are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A tripping mechanism, characterized in that: Applied to a circuit breaker, the tripping mechanism comprises: The mounting bracket comprises a first side plate and a second side plate which are spaced apart from each other, wherein the first side plate and the second side plate cooperate to form a mounting cavity; An armature is rotatably mounted in the mounting cavity, and the armature can rotate and strike the drawbar of the circuit breaker, so that the circuit breaker is in an instantaneous tripping state; The elastic member includes a first elastic member and a second elastic member, wherein one end of the first elastic member is connected to the first side plate, and the other end of the first elastic member is connected to the first position of the armature; one end of the second elastic member is connected to the second side plate, and the other end of the second elastic member is connected to the second position of the armature, and the first position and the second position are spaced apart.

2. The tripping mechanism according to claim 1, characterized in that: The mounting bracket further includes a connecting plate, a first connecting structure and a second connecting structure; The connecting plate is used to connect the first side plate and the second side plate; The first connecting structure is disposed on a side of the first side plate away from the connecting plate, and one end of the first elastic member is connected to the first side plate through the first connecting structure; The second connection structure is arranged on a side of the second side plate away from the connection plate, and one end of the second elastic member is connected to the second side plate through the second connection structure.

3. The tripping mechanism according to claim 2, characterized in that: The armature comprises a first mounting groove and a second mounting groove, wherein the first mounting groove and the second mounting groove are arranged at intervals; The first connection structure is set as a first protrusion, the first elastic member is sleeved on the first protrusion, one end of the first protrusion facing away from the first side plate is inserted into the first installation groove, one end of the first elastic member is abutted against the first side plate, and the other end of the first elastic member is abutted against the first position; The second connecting structure is configured as a second protrusion, the second elastic member is sleeved on the second protrusion, one end of the second protrusion facing away from the second side plate is passed through the second mounting groove, one end of the second elastic member abuts against the second side plate, and the other end of the second elastic member abuts against the second position.

4. The tripping mechanism according to claim 3, characterized in that: At least part of the first protrusion coincides with the rotation trajectory of the armature; and / or, At least a portion of the second protrusion coincides with a rotation trajectory of the armature.

5. The tripping mechanism according to claim 3 or 4, characterized in that: A first limiting structure is provided at one end of the first protrusion away from the first side plate, and the first limiting structure is clamped to a side of the armature away from the first side plate; and / or, A second limiting structure is disposed at one end of the second protrusion away from the second side plate, and the second limiting structure is clamped to a side of the armature away from the second side plate.

6. The tripping mechanism according to any one of claims 2 to 4, characterized in that: The armature includes a connecting portion, an abutting portion and a striking portion; The abutting portion connects the connecting portion and the striking portion; The connecting portion is provided with the first connecting structure and the second connecting structure; The abutment portion is rotatably connected to the mounting bracket; The striking portion is arranged on a side of the abutting portion away from the connecting portion, and the striking portion is used for striking the traction rod.

7. The tripping mechanism according to claim 6, characterized in that: The first side plate is provided with a first connecting groove, one side of the abutting portion is provided with a first connecting protrusion, and at least part of the first connecting protrusion is inserted into the first connecting groove; The second side plate is provided with a second connecting groove, and the other side of the abutting portion is provided with a second connecting protrusion, and at least a part of the second connecting protrusion is passed through the second connecting groove.

8. The tripping mechanism according to claim 7, characterized in that: The first connecting groove includes a first sub-groove and a second sub-groove that are connected to each other, and the first sub-groove is arranged away from the connecting plate compared to the second sub-groove; Along the direction from the first side plate to the connecting plate, the size of the first sub-slot is smaller than the size of the second sub-slot.

9. The tripping mechanism according to claim 6, characterized in that: Also includes adjustment screws, A mounting portion is provided on a side of the first side plate facing away from the armature, or a mounting portion is provided on a side of the second side plate facing away from the armature, and the mounting portion is substantially parallel to the connecting portion; The adjusting screw is movably connected to the mounting portion, and the adjusting screw abuts against the abutting portion on one side facing the abutting portion.

10. A circuit breaker, characterized in that: It comprises a housing and a release mechanism as claimed in any one of claims 1 to 9; The tripping mechanism is mounted on the housing.

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