A contact structure and circuit breaker

Abstract

The application provides a contact structure and a circuit breaker, and relates to the technical field of circuit breakers. The contact structure comprises a conductive piece, a support, and two elastic conductive clamping pieces. The support is provided with two mounting holes, and the two elastic clamping pieces are respectively arranged in the two mounting holes and are arranged oppositely and spacedly. The conductive piece is clamped on one side of the two elastic clamping pieces, and the conductive piece is connected with the two elastic clamping pieces and connected with an external circuit. The other side of the two elastic clamping pieces defines a socket. In the direction from the conductive piece to the support, the elastic clamping piece has a deformation arc, so that the socket clamps the conductor. The contact structure of the application is only dynamic contact on one side of the circuit breaker, the dynamic contact area of the contact structure is reduced, the contact resistance is effectively reduced, the phenomenon of poor contact is avoided to a certain extent, the temperature rise phenomenon is improved, the use performance is ensured, the safety hidden danger is reduced, the phenomenon of burning out of the circuit breaker due to poor contact is avoided to a certain extent, and the use safety is improved.

Description

Technical Field

[0001] This application relates to the field of circuit breaker technology, and in particular to a contact structure and a circuit breaker. Background Technology

[0002] Low-voltage circuit breakers are important electrical components in low-voltage power distribution systems. For example, drawer-type circuit breakers not only frequently connect and disconnect circuits under load, but also automatically trip in the event of short circuits, overloads, and undervoltage (or loss of voltage), thus protecting lines and electrical equipment. The pluggable contact structure of a low-voltage circuit breaker is a crucial component connecting the internal conductive circuit of the circuit breaker body to external circuits (such as busbars and cables), serving as the interface for current to enter and exit the circuit breaker.

[0003] In related technologies, the pluggable contact structure is a bridged type, meaning that both ends of the pluggable contact structure have sockets. One socket connects to the circuit breaker body, and the other socket connects to an external circuit. The contact points at both ends of the pluggable contact structure are dynamic, which can easily lead to poor contact during the contact process, resulting in excessive temperature rise, performance degradation, safety hazards, and in severe cases, even burning out the circuit breaker. Utility Model Content

[0004] This application provides a contact structure and a circuit breaker to improve the temperature rise phenomenon of the contact structure to a certain extent, reduce safety hazards, and improve the safety of use.

[0005] In a first aspect, this application provides a contact structure including a conductive element, a support, and two conductive elastic clips. The support has two mounting holes, and the two elastic clips are respectively inserted into the two mounting holes, positioned opposite each other and spaced apart. The conductive element is clamped on one side of the two elastic clips, connected to both elastic clips, and used for connection to an external circuit. The other side of the two elastic clips defines a socket for inserting a conductor. Along the direction from the conductive element to the support, each elastic clip has at least one deformation arc. The deformation arcs of the two elastic clips can deform in directions that bring them closer together or further apart, so that the socket clamps the conductor, thereby electrically connecting the conductor to the conductive element.

[0006] The contact structure provided in this application, by setting a bracket with two mounting holes, allows two conductive elastic clips to be inserted into the two mounting holes respectively, so that the two elastic clips are positioned opposite each other and spaced apart. A conductive element is clamped and connected between one side of the two elastic clips. The conductive element is used to connect to an external circuit, that is, the contact structure of this application has a static connection with the external circuit, not a pluggable dynamic connection. The other side of the two elastic clips defines a socket, and along the direction from the conductive element to the bracket, the elastic clips have at least one deformation arc. The deformation arcs of the two elastic clips can deform in a direction that moves closer to or further away from each other to clamp the conductor inserted into the socket, so that the conductor is electrically connected to the conductive element. Because the elastic clips have at least one deformation arc, and the deformation arcs of the two elastic clips can deform in a direction that moves closer to or further away from each other, when the conductor is inserted into the socket, the deformation arc will undergo elastic deformation, so that the socket clamps the conductor, and the socket maintains a certain clamping force, ensuring that the socket and the conductor are in close contact, thereby reducing the contact resistance to a certain extent.

[0007] Because the contact structure of this application is statically connected to the external circuit through conductive elements and plugged into the circuit breaker conductor through a socket, the contact structure of this application is a single-sided socket. In practical use, the conductive elements are connected to the external circuit, and the circuit breaker conductor is inserted into the socket to connect the circuit breaker to the external circuit, achieving electrical connection. The structure is simple and easy to assemble. Furthermore, compared with the related technology where both ends of the contact structure are sockets, with one end connected to the circuit breaker body and the other end connected to the external circuit, the contact structure of this application is statically connected to the external circuit, with dynamic contact only on one side of the circuit breaker. This reduces the dynamic contact area of ​​the contact structure, effectively reducing contact resistance, thereby avoiding poor contact to a certain extent, improving temperature rise, ensuring performance, reducing safety hazards, and further preventing the circuit breaker from burning out due to poor contact, thus improving safety in use.

[0008] In one possible design, each elastic clip includes an elastic sheet and a conductive contact sheet. A conductive element is clamped on one side of two contact sheets, and the other side of the two contact sheets together defines an insertion port. The contact sheet has at least one deformation arc. Two elastic sheets are respectively arranged on opposite sides of the two contact sheets. The side of the elastic sheet closer to the conductive element is connected to both the corresponding contact sheet and the conductive element, and the side of the elastic sheet closer to the insertion port abuts against the corresponding contact sheet.

[0009] The above-described scheme connects the conductive element to one side of the two contact pieces, with the side of the two contact pieces opposite to the conductive element defining the socket. The contact pieces have a deformation arc. Two elastic pieces are respectively placed on opposite sides of the two contact pieces, with one side of the elastic piece connected to the contact piece and the conductive element, and the other side of the elastic piece abutting against the corresponding contact piece. The structure is simple, easy to manufacture, and convenient to assemble. Simultaneously, the elastic pieces provide limiting protection for the contact pieces and, to a certain extent, improve the structural strength of the contact pieces, especially the structural strength at the socket, ensuring the clamping force of the socket on the conductor and ensuring tight contact between the socket and the conductor. This improves the reliability of the connection between the contact structure of this application and the circuit breaker.

[0010] In one possible design, the elastic sheet has a first connecting hole on the side near the conductive element, the contact sheet has a second connecting hole on the side near the conductive element, and the conductive element has a third connecting hole. The elastic sheet, the contact sheet, and the conductive element are connected by fasteners passing through the first connecting hole, the second connecting hole, and the third connecting hole.

[0011] The above method involves creating a first connecting hole on the elastic sheet, a second connecting hole on the contact sheet, and a third connecting hole on the conductive component. During assembly, fasteners are inserted into the first, second, and third connecting holes and tightened to connect the elastic sheet, contact sheet, and conductive component together. The structure is simple, easy to manufacture, and provides convenient and stable connections.

[0012] In one possible design, there are at least two first connecting holes, which are spaced apart on the elastic sheet along a first direction; there are at least two second connecting holes and at least two third connecting holes; and the first connecting holes, second connecting holes, and third connecting holes are connected in a one-to-one correspondence.

[0013] Through the above solution, multiple first connecting holes are opened on the elastic sheet, multiple second connecting holes are opened on the contact sheet, and multiple third connecting holes are opened on the conductive component. The first connecting holes, second connecting holes, and third connecting holes are grouped one-to-one. In this way, the elastic sheet, contact sheet, and conductive component can be connected together by multiple fasteners passing through each group of connecting holes, which improves the connection strength between the elastic sheet, contact sheet, and conductive component, improves the structural stability of the contact structure of this application, and further improves the clamping force of the socket on the conductor, further avoids the phenomenon of poor contact between the conductor and the socket, and further improves the safety of use.

[0014] In one possible design, the elastic sheet, contact sheet, and conductive element are detachably connected.

[0015] The above solution allows for the detachable connection of the elastic sheet, contact sheet, and conductive component. If any of these components is damaged and needs replacement, only the entire assembly needs to be disassembled and replaced. In other words, compared to replacing the entire assembly, this solution reduces replacement costs to some extent.

[0016] In one possible design, the contact piece includes a rigid connecting segment, an elastic segment, and a rigid clamping segment. The connecting segment is connected to the elastic segment and the conductive element. The elastic segment is connected between the connecting segment and the clamping segment and has at least one deformation arc. The clamping segments of the two contact pieces together define a socket. The clamping segment has a first arc segment and a second arc segment. The first arc segment is located between the second arc segment and the elastic segment. In the direction from the conductive element to the support, the first arc segment is inclined towards the socket, and the second arc segment is inclined away from the socket.

[0017] The above scheme connects the rigid connecting section away from the elastic section to the corresponding elastic sheet and conductive component, so that the rigid clamping sections of the two contact sheets jointly define the socket, allowing the elastic section in the middle to undergo elastic deformation. This structure is simple, easy to manufacture, and easy to assemble. It also provides the socket with a certain structural strength and contact pressure, ensuring good clamping force on the conductor inserted therein. This effectively reduces the risk of poor contact of the conductor in the socket and improves the safety of use.

[0018] Simultaneously, the clamping section has a connected first arc segment and a second arc segment, with the first arc segment located between the second arc segment and the elastic segment. Furthermore, the first arc segment is inclined towards the socket in the direction from the conductive element to the bracket, while the second arc segment is inclined away from the socket in the same direction. This design makes the socket wider at both ends and narrower in the middle, facilitating conductor insertion, improving assembly convenience, and providing a strong clamping force to ensure the conductor's stability within the socket.

[0019] In one possible design, a plurality of first heat dissipation grooves are provided on the elastic sheet, and the plurality of first heat dissipation grooves are spaced apart on the elastic sheet along a first direction, and each first heat dissipation groove extends along the direction from the conductive element to the bracket.

[0020] Through the above solution, multiple first heat dissipation grooves are spaced apart in the first direction of the elastic sheet. The first heat dissipation groove is a strip-shaped groove extending along the direction from the conductive element to the bracket. In this way, when the contact structure of this application is working, heat can be dissipated from the first heat dissipation groove in a timely manner, which improves the heat dissipation performance, achieves a better temperature rise effect, ensures the working performance of the contact structure and its surrounding components, improves the safety of use, and helps to extend the service life of the circuit breaker.

[0021] In one possible design, the contact piece has multiple second heat dissipation grooves, which are spaced apart along a first direction on the contact piece, and each second heat dissipation groove extends along the direction from the conductive element to the bracket.

[0022] Through the above solution, multiple second heat dissipation grooves are spaced apart in the first direction of the contact piece. The second heat dissipation grooves are strip-shaped grooves extending along the direction from the conductive element to the bracket. In this way, when the contact structure of this application is working, heat can be dissipated from the second heat dissipation grooves in a timely manner, which improves the heat dissipation performance, achieves a better temperature rise effect, ensures the working performance of the contact structure and its surrounding components, improves the safety of use, and helps to extend the service life of the circuit breaker.

[0023] In one possible design, the side of the elastic sheet facing away from the conductive element has a plurality of arc-shaped elastic pieces spaced apart along a first direction, and the side of the contact sheet facing away from the conductive element has a plurality of arc-shaped contacts spaced apart along the first direction, with the arc-shaped elastic pieces and the arc-shaped contacts corresponding to each other and abutting against each other.

[0024] The above scheme sets the side of the contact piece away from the conductive element as a plurality of arc-shaped contacts spaced apart along the first direction, and sets the side of the elastic piece away from the conductive element as a plurality of arc-shaped spring pieces spaced apart along the first direction. Each arc-shaped spring piece abuts against the side of an arc-shaped contact away from the socket. This arrangement not only improves the elastic deformation performance at the socket, giving the socket a stable and firm clamping force on the conductor inserted therein, but also reduces the contact area between the conductor and the socket while meeting the clamping strength requirements for the conductor, thereby effectively reducing the contact resistance and achieving a better temperature rise effect.

[0025] In one possible design, the contact piece is provided with a plurality of first reinforcing ribs on the side facing the elastic piece, the plurality of first reinforcing ribs are spaced apart along a first direction, and each first reinforcing rib extends along the direction from the conductive element to the bracket.

[0026] With the above solution, multiple first reinforcing ribs are arranged at intervals along the first direction on the side of the contact piece facing the elastic piece. The first reinforcing ribs are strip-shaped reinforcing ribs that extend along the direction from the conductive element to the bracket. This arrangement improves the structural strength of the contact piece, thereby increasing the clamping force and clamping strength of the socket on the conductor passing through it, further reducing the risk of poor contact of the conductor in the socket, and improving the safety of use.

[0027] In one possible design, a first positioning part is provided on the wall of the mounting hole, and a second positioning part matching the first positioning part is provided on the elastic clip. The first positioning part and the second positioning part are connected to each other to limit the elastic clip.

[0028] With the above solution, a first positioning part is provided on the wall of the mounting hole, and a second positioning part is provided at the position of the elastic clip corresponding to the mounting hole. When the elastic clip is inserted into the mounting hole, the first and second positioning parts cooperate to limit the elastic clip, thereby improving the structural stability of the elastic clip and thus improving the structural strength of the socket. This ensures that the socket has a predetermined clamping force, guarantees stable and reliable contact between the socket and the conductor inserted therein, and improves the working performance of the contact structure.

[0029] In one possible design, the first positioning part includes a positioning protrusion, and the second positioning part includes a positioning groove into which the positioning protrusion can extend.

[0030] The above-described design features a positioning protrusion on the wall of the mounting hole and a positioning groove on the elastic clip. This structure is simple and easy to manufacture. During assembly, when the elastic clip is inserted into the mounting hole, the positioning protrusion extends into the positioning groove, thus limiting the elastic clip's position effectively.

[0031] In one possible design, the bracket includes a body and a support member. The body has a through groove with two opposing groove walls in a first direction. The two groove walls extend in a direction away from the conductive element to form connecting ears. The two ends of the support member are respectively connected to the two connecting ears. The support member, connecting ears, and the groove walls of the through groove together form a mounting hole.

[0032] The above scheme makes the bracket include a body and a support member. The two opposite groove walls of the through groove on the body in the first direction form connecting ears. The two ends of the support member are connected to the two connecting ears. In this way, the support member, connecting ears, and through groove form two mounting holes. The two mounting holes are located on both sides of the support member, allowing two elastic clips to pass through. In this way, the bracket and support member have good load-bearing capacity for the two elastic clips and have a certain limiting effect on the two elastic clips, making the structural stability of the contact structure better. In particular, the setting of the support member ensures the size of the socket between the two elastic clips, which facilitates the conductor of the circuit breaker to pass through and improves the ease of assembly.

[0033] In one possible design, the two ends of the support are detachably connected to two connecting lugs.

[0034] The above solution allows for detachable connection between the support and the two connecting ears, meaning the support and bracket are detachably connected. This facilitates assembly and improves the assembly efficiency of the contact structure. Furthermore, if either the support or the bracket is damaged and needs replacement, it is only necessary to disassemble the support and the two connecting ears and replace the damaged component, thus reducing replacement costs to some extent.

[0035] In one possible design, at least one side of the support member is provided with a second reinforcing rib along the direction from the conductive element to the bracket.

[0036] By employing the above-described scheme, a second reinforcing rib is provided on at least one side of the support member, thereby enhancing the structural strength of the support member and further ensuring the dimensions of the socket between the two elastic clips. This makes the socket structure more stable and facilitates assembly. Simultaneously, it improves the structural stability of the two mounting holes and the bracket, thus providing better load-bearing capacity for the two elastic clips and further ensuring the structural stability of the contact structure of this application.

[0037] Secondly, this application provides a circuit breaker including the contact structure described above.

[0038] The beneficial effects of the circuit breakers provided in the second aspect and the various possible designs of the second aspect can be found in the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0039] Figure 1 This is an isometric view of the contact structure described in one embodiment of this application.

[0040] Figure 2 This is an exploded view of the contact structure described in one embodiment of this application.

[0041] Figure 3 This is a side view of the contact structure described in one embodiment of this application.

[0042] Figure 4 This is an isometric view of the support for the contact structure described in one embodiment of this application.

[0043] Figure 5 This is an exploded view of the support for the contact structure described in one embodiment of this application.

[0044] Explanation of reference numerals in the attached drawings: 1. Conductive component; 11. Through hole; 2. Bracket; 21. Body; 211. Connecting ear; 22. Support component; 222. Second reinforcing rib; 3. Elastic clip; 31. Elastic piece; 311. First connecting hole; 312. First heat dissipation groove; 313. Arc-shaped spring piece; 314. Second positioning part; 32. Contact piece; 321. Connecting section; 322. Elastic section; 323. First arc segment; 324. Second arc segment; 325. Deformation arc; 326. Second connecting hole; 327. Second heat dissipation groove; 328. Arc-shaped contact; 329. First reinforcing rib; 4. Mounting hole; 401. First positioning part; 5. Socket. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0047] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0048] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0049] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the contact structure and circuit breaker of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0051] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0052] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "connection" or "linking" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection secured by screws, bolts, or other spacers; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, for example, a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In circuit structures, "connection" or "linking" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected; it can also refer to the internal connection of two components. Signal connection can refer not only to signal connection through a circuit but also to signal connection through a medium, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] Low-voltage circuit breakers are important electrical components in low-voltage power distribution systems. For example, drawer-type circuit breakers not only frequently connect and disconnect circuits under load, but also automatically trip in the event of short circuits, overloads, and undervoltage (or loss of voltage), thus protecting lines and electrical equipment. The pluggable contact structure of a low-voltage circuit breaker is a crucial component connecting the internal conductive circuit of the circuit breaker body to external circuits (such as busbars and cables), serving as the interface for current to enter and exit the circuit breaker.

[0054] In related technologies, the pluggable contact structure is a bridged type, meaning that both ends of the pluggable contact structure have sockets. One socket connects to the circuit breaker body, and the other socket connects to an external circuit. The contact points at both ends of the pluggable contact structure are dynamic, which can easily lead to poor contact during the contact process, resulting in excessive temperature rise, performance degradation, safety hazards, and in severe cases, even burning out the circuit breaker.

[0055] Based on this, this embodiment provides a contact structure and circuit breaker, including a conductive element, a support, and two conductive elastic clips. The two elastic clips are respectively inserted into the support and are arranged opposite to each other and spaced apart. One side of each elastic clip is connected to an external circuit through the conductive element, and the other side of each elastic clip defines a socket for the circuit breaker's conductor to be inserted. Furthermore, each elastic clip has at least one deformation arc, which can deform in a direction that moves closer to or further away from each other, so that the socket clamps the conductor, making the conductor electrically connected to the conductive element. This arrangement ensures that the contact structure is statically connected to the external circuit, with dynamic contact only on one side of the circuit breaker. This reduces the dynamic contact area of ​​the contact structure, effectively reducing contact resistance, thereby avoiding poor contact to a certain extent, improving temperature rise, ensuring performance, reducing safety hazards, and ultimately preventing the circuit breaker from burning out due to poor contact, thus improving operational safety.

[0056] The contact structure and circuit breaker provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0057] This embodiment provides a circuit breaker, which includes a circuit breaker body (not shown) and a contact structure. The contact structure is mounted on the circuit breaker body.

[0058] The circuit breaker body can be fixed in the distribution cabinet, and the circuit breaker body is electrically connected to the external circuit, such as electrical equipment or power supply, through the contact structure to protect and control the circuit.

[0059] Specifically, the circuit breaker body has conductors (not shown) for connection to an external circuit. One side of the contact structure has a socket, and the other side has conductive elements for connection to an external circuit. During assembly, the conductors of the circuit breaker body are inserted into the sockets, and the conductive elements of the contact structure are connected to the external circuit, thus connecting the circuit breaker body to the external circuit.

[0060] Because the contact structure is statically connected to the external circuit and only dynamically contacts the circuit breaker on one side, the dynamic contact area of ​​the contact structure is reduced, effectively lowering the contact resistance. This, to a certain extent, avoids poor contact, improves temperature rise, ensures performance, reduces safety hazards, and further prevents the circuit breaker from burning out due to poor contact, thus enhancing operational safety.

[0061] refer to Figures 1 to 3 As shown, this embodiment provides a contact structure, which includes a conductive element 1, a support 2, and two conductive elastic clips 3.

[0062] For details, please refer to Figures 1 to 3As shown, the bracket 2 has two mounting holes 4, and two elastic clips 3 are respectively inserted into the two mounting holes 4, and are arranged opposite to each other and spaced apart. A conductive element 1 is clamped on one side of the two elastic clips 3, and is connected to both elastic clips 3, and is used for connection to an external circuit. The other side of the two elastic clips 3 defines a socket 5 for inserting a conductor, and in the direction along the conductive element 1 to the bracket 2 (see reference) Figure 1 and Figure 3 In the Y direction, the elastic clip 3 has at least one deformation arc 325. The deformation arcs 325 of the two elastic clips 3 can deform in the direction of approaching or moving away from each other, so that the socket 5 clamps the conductor and makes the conductor electrically connected to the conductive element 1.

[0063] In a specific implementation, one side of the conductive element 1 is sandwiched between two elastic clips 3 and is connected to both elastic clips 3; the other side of the conductive element 1 is exposed outside the two elastic clips 3 and is used to connect to an external circuit.

[0064] refer to Figure 1 and Figure 2 As shown, in some implementations, at least one through hole 11 is provided on the side of the conductive element 1 away from the elastic clip 3, and the wiring terminals of the external circuit can be inserted through the through hole 11 to realize the connection between the conductive element 1 and the external circuit.

[0065] Of course, in some other implementations, the conductive component 1 and the external circuit can also be connected together by welding, for example.

[0066] Among them, the conductive component 1 can be, for example, a copper busbar, which has low resistivity and excellent conductivity.

[0067] refer to Figure 2 and Figure 3 As shown, two elastic clips 3 are respectively inserted into the two mounting holes 4 on the bracket 2, so that the two elastic clips 3 are opposite to each other and spaced apart. One side of the two elastic clips 3 is connected together by a conductive element 1, and is connected to an external circuit through the conductive element 1; the other side of the two elastic clips 3 together defines a socket 5. The conductor of the circuit breaker is inserted into the socket 5 and is electrically connected to the conductive element 1 through the two elastic clips 3, thereby realizing the connection between the circuit breaker and the external circuit.

[0068] In other words, one side of the two elastic clips 3 is statically connected to the external circuit through the conductive element 1, and the other side of the two elastic clips 3 is detachably connected to the conductor of the circuit breaker through the socket 5. In other words, the contact structure of this embodiment is statically connected to the external circuit, and only dynamically contacts the circuit breaker side. This reduces the dynamic contact area of ​​the contact structure, effectively reduces the contact resistance, reduces the occurrence of poor contact to a certain extent, improves the temperature rise phenomenon, ensures the performance of use, and reduces safety hazards.

[0069] Furthermore, refer to Figure 1 and Figure 3 As shown, each of the two elastic clips 3 has at least one deformation arc 325. When the conductor is inserted into the socket 5, the deformation arcs 325 on the two elastic clips 3 can deform. The deformation of the deformation arcs 325 provides force to the socket 5, so that the socket 5 maintains a certain clamping force, tightly clamping the conductor, increasing the clamping strength of the socket 5 on the conductor, thereby avoiding the phenomenon of poor contact between the conductor and the socket 5 to a certain extent and improving the temperature rise effect.

[0070] The contact structure provided in this embodiment uses a bracket 2 with two mounting holes 4. Two conductive elastic clips 3 are respectively inserted into the two mounting holes 4, so that the two elastic clips 3 are positioned opposite each other and spaced apart. A conductive element 1 is clamped and connected between one side of the two elastic clips 3. The conductive element 1 is used to connect to an external circuit. That is, the contact structure of this embodiment is statically connected to the external circuit, not dynamically connected by plugging. The other side of the two elastic clips 3 defines a socket 5. In the direction from the conductive element 1 to the bracket 2, the elastic clips 3 have at least one deformation arc. The deformation arcs of the two elastic clips 3 can deform in a direction that moves closer to or further away from each other to clamp the conductor inserted into the socket 5, so that the conductor is electrically connected to the conductive element 1. Since the elastic clip 3 has at least one deformation arc, and the deformation arcs of the two elastic clips 3 can deform in the direction of approaching or moving away from each other, when the conductor is inserted into the socket 5, the deformation arc will undergo elastic deformation, causing the socket 5 to clamp the conductor. The socket 5 maintains a predetermined clamping force, ensuring that the socket 5 is in close contact with the conductor, which reduces the contact resistance to a certain extent.

[0071] Since the contact structure of this embodiment is statically connected to the external circuit through the conductive element 1 and connected to the circuit breaker conductor through the socket 5, the contact structure of this embodiment has a single-sided socket 5. In actual use, the conductive element 1 is connected to the external circuit, and the circuit breaker conductor is inserted into the socket 5 to connect the circuit breaker to the external circuit, achieving electrical connection. The structure is simple and easy to assemble. Furthermore, compared with the related technology where both ends of the contact structure are sockets, with one end connected to the circuit breaker body and the other end connected to the external circuit, the contact structure of this embodiment is statically connected to the external circuit, with dynamic contact only on one side of the circuit breaker. This reduces the dynamic contact area of ​​the contact structure, effectively reducing contact resistance, thereby avoiding poor contact to a certain extent, improving temperature rise, ensuring performance, reducing safety hazards, and further preventing the circuit breaker from burning out due to poor contact, thus improving safety in use.

[0072] refer to Figures 1 to 3As shown, in some embodiments, each elastic clip 3 includes an elastic sheet 31 and a conductive contact sheet 32. A conductive element 1 is clamped on one side of the two contact sheets 32, and the other side of the two contact sheets 32 together defines an insertion port 5. The contact sheet 32 ​​has at least one deformation arc 325. The two elastic sheets 31 are respectively arranged on opposite sides of the two contact sheets 32. The side of the elastic sheet 31 closest to the conductive element 1 is connected to both the corresponding contact sheet 32 ​​and the conductive element 1, and the side of the elastic sheet 31 closest to the insertion port 5 abuts against the corresponding contact sheet 32.

[0073] In other words, the conductive element 1 is connected to one side of the two contact pieces 32, and the side of the two contact pieces 32 opposite to the conductive element 1 defines the socket 5. The contact pieces 32 have a deformation arc 325. Two elastic pieces 31 are respectively disposed on the opposite sides of the two contact pieces 32, and one side of the elastic piece 31 is connected to the contact piece 32 and the conductive element 1, while the other side of the elastic piece 31 abuts against the corresponding contact piece 32. The structure is simple, easy to manufacture, and convenient to assemble.

[0074] Meanwhile, the elastic sheet 31 provides limiting protection for the contact piece 32 and improves the structural strength of the contact piece 32 to a certain extent, especially the structural strength of the socket 5, ensuring the clamping force of the socket 5 on the conductor, so that the socket 5 is in close contact with the conductor, thereby improving the connection reliability of the contact structure and the circuit breaker in this embodiment.

[0075] In practice, the elastic sheet 31 can be, for example, a spring sheet. The contact sheet 32 ​​can be, for example, a copper sheet or an aluminum sheet.

[0076] refer to Figure 1 and Figure 2 As shown, in some embodiments, the elastic sheet 31 has a first connecting hole 311 on the side near the conductive member 1, the contact sheet 32 ​​has a second connecting hole 326 on the side near the conductive member 1, and the conductive member 1 has a third connecting hole (not shown). The elastic sheet 31, the contact sheet 32, and the conductive member 1 are connected by fasteners passing through the first connecting hole 311, the second connecting hole 326, and the third connecting hole.

[0077] By creating a first connecting hole 311 on the elastic sheet 31, a second connecting hole 326 on the contact sheet 32, and a third connecting hole on the conductive component 1, fasteners can be inserted into the first connecting hole 311, the second connecting hole 326, and the third connecting hole and tightened during assembly. This allows the elastic sheet 31, the contact sheet 32, and the conductive component 1 to be connected together. The structure is simple, easy to manufacture, and the connection is convenient and stable.

[0078] In practice, fasteners can be screws, rivets, etc.

[0079] During assembly, the center lines of the first connecting holes 311 on the two elastic pieces 31, the center lines of the second connecting holes 326 on the two contact pieces 32, and the center lines of the third connecting holes on the conductive element 1 can be collinear. In this way, the fastener can pass through the two elastic pieces 31, the two contact pieces 32, and the conductive element 1 at the same time, connecting the two elastic pieces 31, the two contact pieces 32, and the conductive element 1 together, resulting in high assembly efficiency.

[0080] Of course, in other implementations, the two elastic clips 3 can also be connected to the conductive element 1 by different fasteners.

[0081] In other embodiments, the elastic sheet 31, the contact sheet 32, and the conductive element 1 can also be connected together by welding, for example.

[0082] refer to Figure 1 and Figure 2 As shown, in some embodiments, there are at least two first connecting holes 311, and at least two first connecting holes 311 are along a first direction (refer to...). Figure 1 The X-axis of the first connecting hole 31 is spaced on the elastic sheet 31. There are at least two second connecting holes 326 and at least two third connecting holes. The first connecting hole 311, the second connecting hole 326, and the third connecting hole are connected one-to-one.

[0083] In other words, multiple first connecting holes 311 are formed on the elastic sheet 31, multiple second connecting holes 326 are formed on the contact sheet 32, and multiple third connecting holes are formed on the conductive element 1. The first connecting holes 311, the second connecting holes 326, and the third connecting holes are grouped one-to-one. In this way, the elastic sheet 31, the contact sheet 32, and the conductive element 1 can be connected together by multiple fasteners passing through each group of connecting holes, which improves the connection strength between the elastic sheet 31, the contact sheet 32, and the conductive element 1, improves the structural stability of the contact structure of this embodiment, and further improves the clamping force of the socket 5 on the conductor, further avoids the phenomenon of poor contact between the conductor and the socket 5, and further improves the safety of use.

[0084] In some embodiments, the elastic sheet 31, the contact sheet 32, and the conductive element 1 are detachably connected. In this way, if any one of the elastic sheet 31, the contact sheet 32, or the conductive element 1 is damaged and needs to be replaced, it is only necessary to disassemble the elastic sheet 31, the contact sheet 32, and the conductive element 1 and replace the damaged one. In other words, compared with the solution of replacing the elastic sheet, the contact sheet, and the conductive element as a whole, the replacement cost is reduced to a certain extent.

[0085] refer to Figure 3As shown, in some embodiments, the contact piece 32 includes a rigid connecting segment 321, an elastic segment 322 and a rigid clamping segment. The connecting segment 321 is connected to the elastic piece 31 and the conductive element 1. The elastic segment 322 is connected between the connecting segment 321 and the clamping segment and has at least one deformation arc 325. The clamping segments of the two contact pieces 32 together define the socket 5.

[0086] The clamping section has a first arc segment 323 and a second arc segment 324. Specifically, the side of the clamping section opposite to the elastic segment 322 has the first arc segment 323 and the second arc segment 324. The first arc segment 323 is located between the second arc segment 324 and the elastic segment 322, and in the direction from the conductive member 1 to the bracket 2, the first arc segment 323 is inclined toward the direction closer to the socket 5, and the second arc segment 324 is inclined away from the socket 5.

[0087] In practice, the second connecting hole 326 is formed on the connecting section 321.

[0088] By connecting the side of the rigid connecting section 321 away from the elastic section 322 to the corresponding elastic sheet 31 and conductive element 1, the rigid clamping sections of the two contact sheets 32 jointly define the socket 5, allowing the elastic section 322 in the middle to undergo elastic deformation. This structure is simple, easy to manufacture, and easy to assemble. It also gives the socket 5 a certain structural strength and contact pressure, ensuring good clamping force on the conductor inserted therein. This effectively reduces the risk of poor contact of the conductor in the socket 5 and improves the safety of use.

[0089] Simultaneously, the clamping section has a connected first arc segment 323 and a second arc segment 324, with the first arc segment 323 located between the second arc segment 324 and the elastic segment 322. Furthermore, the first arc segment 323 is inclined towards the socket 5 along the direction from the conductive member 1 to the bracket 2, while the second arc segment 324 is inclined away from the socket 5 along the same direction. This design makes the socket 5 larger at both ends and smaller in the middle, facilitating conductor insertion, improving assembly convenience, and providing a strong clamping force to ensure the conductor's stability within the socket 5.

[0090] In practice, the connecting segment 321, the elastic segment 322, and the clamping segment can be integrally molded, resulting in better overall integrity and easier assembly. Alternatively, in other implementations, the connecting segment 321, the elastic segment 322, and the clamping segment can be welded together.

[0091] refer to Figure 1 and Figure 2As shown, in some embodiments, the elastic sheet 31 has a plurality of first heat dissipation grooves 312, which are spaced apart along a first direction on the elastic sheet 31. Each first heat dissipation groove 312 is located along the direction from the conductive member 1 to the bracket 2 (see reference). Figure 1 Extend the setting in the Y direction.

[0092] In other words, multiple first heat dissipation grooves 312 are spaced apart in the first direction of the elastic sheet 31. The first heat dissipation grooves 312 are strip-shaped grooves extending in the direction from the conductive member 1 to the bracket 2. In this way, when the contact structure of this embodiment is working, heat can be dissipated from the first heat dissipation grooves 312 in a timely manner, which improves the heat dissipation performance, achieves a better temperature rise effect, ensures the working performance of the contact structure and its surrounding components, improves the safety of use, and helps to extend the service life of the circuit breaker.

[0093] In practice, the length direction of the first heat dissipation groove 312 can be consistent with the direction between the conductive component 1 and the bracket 2.

[0094] refer to Figure 2 As shown, in some embodiments, a plurality of second heat dissipation grooves 327 are provided on the contact piece 32. The plurality of second heat dissipation grooves 327 are spaced apart on the contact piece 32 along a first direction, and each second heat dissipation groove 327 extends along the direction from the conductive member 1 to the bracket 2.

[0095] In other words, multiple second heat dissipation grooves 327 are spaced apart in the first direction of the contact piece 32. The second heat dissipation grooves 327 are strip-shaped grooves extending in the direction from the conductive member 1 to the bracket 2. In this way, when the contact structure of this embodiment is working, heat can be dissipated from the second heat dissipation grooves 327 in a timely manner, which improves the heat dissipation performance, achieves a better temperature rise effect, ensures the working performance of the contact structure and its surrounding components, improves the safety of use, and helps to extend the service life of the circuit breaker.

[0096] In practice, the second heat dissipation groove 327 can be formed on the clamping section and the elastic section 322, which can not only dissipate the working heat in time, but also improve the elastic deformation performance of the clamping section and the elastic section 322.

[0097] The length direction of the strip-shaped second heat dissipation groove 327 can be consistent with the length direction of the strip-shaped first heat dissipation groove 312, which improves the aesthetics.

[0098] In a specific implementation, the second heat sink 327 and the first heat sink 312 may have overlapping portions in the first direction, so that the heat generated when the contact piece 32 is working can be dissipated in sequence through the second heat sink 327 and the first heat sink 312, resulting in high heat dissipation efficiency.

[0099] For example, the center line of the second heat sink 327 in the third direction can be collinear with the center line of the first heat sink 312 in the third direction, so that the second heat sink 327 and the first heat sink 312 are aligned in the first direction. The third direction is perpendicular to both the first and second directions.

[0100] refer to Figure 2 and Figure 3 As shown, in some embodiments, the side of the elastic sheet 31 facing away from the conductive element 1 has a plurality of arc-shaped elastic pieces 313 spaced apart along a first direction. The side of the contact piece 32 facing away from the conductive element 1 has a plurality of arc-shaped contacts 328 spaced apart along a first direction, and the arc-shaped elastic pieces 313 and the arc-shaped contacts 328 abut against each other in a one-to-one correspondence.

[0101] In other words, the side of the contact piece 32 facing away from the conductive element 1 is configured as a plurality of arc-shaped contacts 328 arranged at intervals along the first direction, and the side of the elastic piece 31 facing away from the conductive element 1 is configured as a plurality of arc-shaped spring pieces 313 arranged at intervals along the first direction. One arc-shaped spring piece 313 abuts against the side of an arc-shaped contact 328 facing away from the socket 5. This configuration not only improves the elastic deformation performance at the socket 5, enabling the socket 5 to have a stable and firm clamping force on the conductor inserted therein, but also reduces the contact area between the conductor and the socket 5 while meeting the clamping strength requirements for the conductor, thereby effectively reducing the contact resistance and achieving a better temperature rise effect.

[0102] For specific implementation, refer to Figure 3 As shown, the side of the deformation arc 325 facing the elastic sheet 31 contacts the elastic sheet 31. In this way, the deformation arc 325 can more timely balance the pressure between the arc-shaped spring sheet 313 and the arc-shaped contact 328, further ensuring the stability and structural strength of the socket 5, and making the socket 5 clamp the conductor more firmly.

[0103] In some implementations, refer to Figure 2 As shown, the contact piece 32 has multiple strip-shaped notches on the side opposite to the conductive element 1, and the length direction of the strip-shaped notches is consistent with the direction between the conductive element 1 and the bracket 2. An arc-shaped spring piece 313 is formed between two adjacent strip-shaped notches.

[0104] refer to Figure 2 As shown, the second heat dissipation groove 327 on the contact piece 32 extends to the end of the contact piece 32 away from the conductive member 1, and the side of the second heat dissipation groove 327 away from the conductive member 1 is open, that is, the side of the second heat dissipation groove 327 facing the socket 5 is open, and an arc-shaped contact 328 is formed between two adjacent second heat dissipation grooves 327.

[0105] refer to Figure 2As shown, in some embodiments, a plurality of first reinforcing ribs 329 are provided on the side of the contact piece 32 facing the elastic piece 31. The plurality of first reinforcing ribs 329 are spaced apart along a first direction, and each first reinforcing rib 329 extends along the direction from the conductive member 1 to the bracket 2.

[0106] By providing a plurality of first reinforcing ribs 329 spaced apart along a first direction on the side of the contact piece 32 facing the elastic piece 31, the first reinforcing ribs 329 are strip-shaped reinforcing ribs extending along the direction from the conductive member 1 to the bracket 2. This arrangement improves the structural strength of the contact piece 32, thereby increasing the clamping force and clamping strength of the socket 5 on the conductor passing through it, further reducing the risk of poor contact of the conductor in the socket 5, and improving the safety of use.

[0107] The first reinforcing rib 329 can be set on the rigid clamping section, which improves the structural strength of the clamping section and makes the clamping force of the plug 5 on the conductor greater.

[0108] In a specific implementation, for example, the first reinforcing rib 329 is provided on the side of each arc-shaped contact 328 facing the elastic sheet 31, which improves the structural strength of the arc-shaped contact 328 and thus improves the clamping force of the arc-shaped contact 328 on the conductor.

[0109] refer to Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, a first positioning part 401 is provided on the wall of the mounting hole 4, and a second positioning part 314 matching the first positioning part 401 is provided on the elastic clip 3. The first positioning part 401 and the second positioning part 314 are connected to each other to limit the elastic clip 3.

[0110] By providing a first positioning part 401 on the wall of the mounting hole 4 and a second positioning part 314 at the position of the elastic clip 3 corresponding to the mounting hole 4, when the elastic clip 3 is inserted into the mounting hole 4, the first positioning part 401 and the second positioning part 314 cooperate to limit the elastic clip 3, thereby improving the structural stability of the elastic clip 3 and thus improving the structural strength of the socket 5. This ensures that the socket 5 has a predetermined clamping force, guarantees that the socket 5 and the conductor inserted therein have stable and reliable contact, and improves the working performance of the contact structure.

[0111] For specific implementation, refer to Figure 2 As shown, the second positioning part 314 may be provided on the elastic sheet 31, for example.

[0112] refer to Figure 2 and Figure 4 As shown, in some embodiments, the first positioning part 401 includes a positioning protrusion, and the second positioning part 314 includes a positioning groove into which the positioning protrusion can extend.

[0113] By setting a positioning protrusion on the wall of the mounting hole 4 and a positioning groove on the elastic clamping piece 3, the structure is simple and easy to manufacture. During assembly, when the elastic clamping piece 3 is inserted into the mounting hole 4, the positioning protrusion can extend into the positioning groove, thereby limiting the elastic clamping piece 3, and the limiting effect is good.

[0114] For specific implementation, refer to Figure 2 and Figure 4 As shown, the mounting hole 4 has multiple positioning protrusions on its wall, which are spaced apart along the first direction. The elastic clamp 3 has multiple positioning grooves, the number and position of which match the number and position of the positioning protrusions. This combination of positioning protrusions and positioning grooves improves the limiting effect on the elastic clamp 3.

[0115] In other embodiments, for example, a positioning groove is provided on the wall of the mounting hole 4, and a positioning protrusion is provided on the elastic clip 3.

[0116] refer to Figure 4 and Figure 5 As shown, in some embodiments, the bracket 2 includes a body 21 and a support member 22. The body 21 has a through groove with two opposing groove walls in a first direction. The two groove walls extend in a direction away from the conductive member 1 to form connecting ears 211. The two ends of the support member 22 are respectively connected to the two connecting ears 211. The support member 22, the connecting ears 211, and the groove walls of the through groove enclose and form a mounting hole 4.

[0117] By making the bracket 2 include a body 21 and a support member 22, the two opposite groove walls of the through groove on the body 21 in the first direction form connecting ears 211. The two ends of the support member 22 are connected to the two connecting ears 211. In this way, the support member 22, the connecting ears 211, and the through groove enclose two mounting holes 4. The two mounting holes 4 are respectively located on both sides of the support member 22 for the two elastic clips 3 to pass through. In this way, the bracket 2 and the support member 22 have good load-bearing performance for the two elastic clips 3 and have a certain limiting effect on the two elastic clips 3, so that the structural stability of the contact structure is good. In particular, the setting of the support member 22 ensures the size of the socket 5 between the two elastic clips 3, which facilitates the conductor of the circuit breaker to pass through and improves the ease of assembly.

[0118] refer to Figure 5 As shown, in some embodiments, the two ends of the support member 22 are detachably connected to two connecting ears 211.

[0119] By making the support member 22 detachably connected to the two connecting ears 211, that is, by making the support member 22 and the bracket 2 detachably connected, assembly is facilitated and the assembly efficiency of the contact structure is improved. At the same time, if either the support member 22 or the bracket 2 is damaged and needs to be replaced, it is only necessary to disassemble the support member 22 and the two connecting ears 211 and replace the damaged one, which reduces the replacement cost to a certain extent.

[0120] refer to Figure 3 and Figure 5 As shown, in some embodiments, at least one side of the support member 22 is provided with a second reinforcing rib 222 in the direction from the conductive member 1 to the bracket 2.

[0121] By providing a second reinforcing rib 222 on at least one side of the support member 22, the structural strength of the support member 22 is improved, further ensuring the size of the socket 5 between the two elastic clips 3, making the structure of the socket 5 more stable and easier to assemble. At the same time, the structural stability of the two mounting holes 4 and the bracket 2 is improved, thereby providing better load-bearing capacity for the two elastic clips 3, further ensuring the structural stability of the contact structure in this embodiment.

Claims

1. A contact structure, characterized in that, It includes conductive components, a support frame, and two conductive elastic clips; The bracket is provided with two mounting holes, and the two elastic clips are respectively inserted into the two mounting holes, and are arranged opposite to each other and spaced apart; The conductive element is clamped on one side of the two elastic clips, and the conductive element is connected to both elastic clips and is used to connect to an external circuit. The other side of the two elastic clips defines a socket for inserting a conductor, and in the direction from the conductive element to the bracket, the elastic clip has at least one deformation arc. The deformation arcs of the two elastic clips can deform in a direction that moves closer to or further away from each other, so that the socket clamps the conductor, and the conductor is electrically connected to the conductive element.

2. The contact structure according to claim 1, characterized in that, Each of the aforementioned elastic clips includes an elastic sheet and a conductive contact sheet; The conductive element is clamped on one side of the two contact pieces, and the other side of the two contact pieces together defines the socket. The contact pieces have at least one of the deformation arcs. The two elastic pieces are respectively arranged on opposite sides of the two contact pieces. The side of the elastic piece closer to the conductive element is connected to both the corresponding contact piece and the conductive element. The side of the elastic piece closer to the socket abuts against the corresponding contact piece.

3. The contact structure according to claim 2, characterized in that, The elastic sheet has a first connecting hole on the side near the conductive element, the contact sheet has a second connecting hole on the side near the conductive element, and the conductive element has a third connecting hole. The elastic sheet, the contact sheet, and the conductive element are connected by fasteners passing through the first connecting hole, the second connecting hole, and the third connecting hole.

4. The contact structure according to claim 3, characterized in that, There are at least two first connecting holes, and at least two first connecting holes are spaced apart on the elastic sheet along a first direction. There are at least two second connecting holes and at least two third connecting holes. The first connecting holes, the second connecting holes, and the third connecting holes are connected in a one-to-one correspondence. And / or, the elastic sheet, the contact sheet, and the conductive element are detachably connected.

5. The contact structure according to claim 2, characterized in that, The contact piece includes a rigid connecting section, an elastic section, and a rigid clamping section. The connecting section is connected to the elastic piece and the conductive element. The elastic section is connected between the connecting section and the clamping section and has at least one deformation arc. The clamping sections of the two contact pieces together define the socket. The clamping section has a first arc segment and a second arc segment, the first arc segment is located between the second arc segment and the elastic segment, and in the direction along the conductive member to the bracket, the first arc segment is inclined toward the direction close to the socket, and the second arc segment is inclined away from the socket. And / or, the elastic sheet is provided with a plurality of first heat dissipation grooves, the plurality of first heat dissipation grooves are spaced apart on the elastic sheet along a first direction, and each first heat dissipation groove extends along the direction from the conductive member to the bracket; And / or, the contact piece is provided with a plurality of second heat dissipation grooves, the plurality of second heat dissipation grooves are spaced apart on the contact piece along a first direction, and each second heat dissipation groove extends along the direction from the conductive element to the bracket; And / or, the side of the elastic sheet opposite to the conductive element has a plurality of arc-shaped elastic pieces spaced apart along a first direction, and the side of the contact sheet opposite to the conductive element has a plurality of arc-shaped contacts spaced apart along a first direction, with the arc-shaped elastic pieces and the arc-shaped contacts corresponding to each other and abutting against each other. And / or, the contact piece is provided with a plurality of first reinforcing ribs on the side facing the elastic piece, the plurality of first reinforcing ribs are spaced apart along a first direction, and each first reinforcing rib extends along the direction from the conductive element to the bracket.

6. The contact structure according to claim 1, characterized in that, A first positioning part is provided on the wall of the mounting hole, and a second positioning part matching the first positioning part is provided on the elastic clip. The first positioning part and the second positioning part are connected to each other to limit the elastic clip.

7. The contact structure according to claim 6, characterized in that, The first positioning part includes a positioning protrusion, and the second positioning part includes a positioning groove into which the positioning protrusion can extend.

8. The contact structure according to any one of claims 1 to 7, characterized in that, The bracket includes a body and supporting components; The body has a through groove, and the through groove has two opposing groove walls in a first direction. The two groove walls extend in a direction away from the conductive element to form connecting ears. The two ends of the support are respectively connected to the two connecting ears. The support, the connecting ears, and the groove walls of the through groove together form the mounting hole.

9. The contact structure according to claim 8, characterized in that, The two ends of the support member are detachably connected to the two connecting lugs; And / or, in the direction along the conductive element to the bracket, at least one side of the support member is provided with a second reinforcing rib.

10. A circuit breaker, characterized in that, Includes the contact structure as described in any one of claims 1 to 9.

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