Bridge-type contact and switching device

Abstract

The present application provides a bridge-type contact and a switching electrical appliance, relating to the technical field of low-voltage electrical appliances. The bridge-type contact includes a first clip group, a second clip group, and an elastic member. The second clip group is movably connected to the first clip group, and the second clip group and the first clip group cooperate to form a first clip opening and a second clip opening arranged oppositely. The first clip opening clamps a first busbar, and the second clip opening clamps a second busbar. The first clip group includes a plurality of spaced first connection structures, the second clip group includes a plurality of spaced second connection structures, and the second connection structures correspond to the first connection structures. The first end of the elastic member is connected to the first connection structure, the second end of the elastic member is connected to the second connection structure, and the number of the elastic members is less than or equal to the number of the first connection structures. The bridge-type contact provided by the present application can adjust the number of the elastic members, so that the bridge-type contact can be applicable to switching electrical appliances with different short-time withstand capacities, and the applicable range of the bridge-type contact is improved.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and particularly relates to a bridge-type contact and a switching electrical appliance. Background Art

[0002] Bridge-type contacts are widely used in switching electrical appliances. The switching electrical appliances can be circuit breakers, relays, contactors, etc. Whether the switching electrical appliances can be used reliably depends to a large extent on the use performance of the bridge-type contacts.

[0003] Taking the switching electrical appliance as a draw-out circuit breaker as an example, the draw-out circuit breaker includes a bridge-type contact, a draw-out seat, and a circuit breaker body. The circuit breaker body can move relative to the draw-out seat. The draw-out seat is connected to the circuit breaker body through the bridge-type contact.

[0004] Based on the structure of the existing bridge-type contact, bridge-type contacts of the same specification can only be applicable to draw-out circuit breakers within the corresponding range of short-time withstand current values. Summary of the Invention

[0005] The present application provides a bridge-type contact and a switching electrical appliance, which can make the bridge-type contact applicable to switching electrical appliances with different short-time withstand capabilities and improve the applicable range of the bridge-type contact.

[0006] In a first aspect, an example of the present application provides a bridge-type contact. The bridge-type contact includes a first clip group, a second clip group, and an elastic member. The second clip group is movably connected to the first clip group. The second clip group and the first clip group cooperate to form a first clip opening and a second clip opening that are arranged in opposite directions. The first clip opening clamps a first busbar, and the second clip opening clamps a second busbar.

[0007] The first clip group includes a plurality of spaced first connection structures, and the second clip group includes a plurality of spaced second connection structures. The second connection structures correspond to the first connection structures.

[0008] The first end of the elastic member is connected to the first connection structure, and the second end of the elastic member is connected to the second connection structure. The number of elastic members is less than or equal to the number of first connection structures.

[0009] In an example of the present application, the first clip group and the second clip group cooperate to form a first clip opening and a second clip opening that are arranged in opposite directions. The first clip opening clamps a first busbar, and the second clip opening clamps a second busbar. That is, the connection between the first busbar and the second busbar can be realized through the cooperating first clip group and second clip group.

[0010] The first clip group is provided with a plurality of first connection structures at intervals, the second clip group is provided with a plurality of second connection structures at intervals, the first connection structures correspond to the second connection structures, the first end of the elastic member can be connected to the first connection structure, the second end of the elastic member can be connected to the second connection structure, and the number of elastic members is less than or equal to the number of first connection structures, that is, the number of elastic members of the bridge-type contact can be adjusted. By adjusting the number of elastic members, the acting force exerted by the elastic members on the first clip group through the first connection structure can be different, and the acting force exerted by the elastic members on the second clip group through the second connection structure can be different, so that the clamping forces at the first clip opening and the second clip opening are different, and further the bridge-type contact can be applicable to circuit breakers with different short-time withstand capacities, which can improve the applicable range of the bridge-type contact.

[0011] In some possible practical ways, the first clip group is provided with a first heat dissipation hole and a second heat dissipation hole at intervals, a first connection structure is formed between the first heat dissipation hole and the second heat dissipation hole, and the first end of the elastic member is connected to the first connection structure.

[0012] The second clip group is provided with a third heat dissipation hole and a fourth heat dissipation hole at intervals, a second connection structure is formed between the third heat dissipation hole and the fourth heat dissipation hole, and the second end of the elastic member is connected to the second connection structure.

[0013] In the example of this application, the first heat dissipation hole and the second heat dissipation hole are arranged at intervals, and the first end of the elastic member can be connected to the part between the first heat dissipation hole and the second heat dissipation hole, that is, the first connection structure is the part between the first heat dissipation hole and the second heat dissipation hole. The third heat dissipation hole and the fourth heat dissipation hole are arranged at intervals, and the second end of the elastic member can be connected to the part between the third heat dissipation hole and the fourth heat dissipation hole, that is, the second connection structure is the part between the third heat dissipation hole and the fourth heat dissipation hole. Based on this, the first connection structure is a part of the first clip group, and the second connection structure is a part of the second clip group, which can avoid setting connection structures protruding from the clip group and reduce the manufacturing cost of the bridge-type contact.

[0014] In addition, taking the cooperation between the first clip group and the first busbar as an example, during the use of the bridge-type contact, the temperature at the contact position between the first clip group and the first busbar rises, causing the air between the first clip group and the first busbar to expand due to heat, and further causing the gas pressure between the first clip group and the first busbar to be greater than the gas pressure at the part of the first clip group away from the first busbar. The gas between the first clip group and the first busbar reaches the space of the first clip group away from the first busbar through the first heat dissipation hole and the second heat dissipation hole, which can improve the heat dissipation efficiency at the contact position between the first clip group and the first busbar, reduce the temperature rise at the contact position between the first clip group and the first busbar, and ensure the use reliability of the switching device. The functions of the third heat dissipation hole and the fourth heat dissipation hole are similar to those of the first heat dissipation hole and the second heat dissipation hole, and are not elaborated in this example of this application.

[0015] In some possible practical ways, a plurality of first heat dissipation holes and a plurality of second heat dissipation holes are both provided at intervals.

[0016] In the example of the present application, a plurality of first heat dissipation holes and a plurality of second heat dissipation holes are both provided at intervals, which means that there can be a plurality of parts between the first heat dissipation holes and the second heat dissipation holes, that is, a plurality of first connection structures can be provided, and a plurality of elastic members connected to the first connection structure can also be provided. By adjusting the number of elastic members, the range of the acting force exerted by the elastic members on the first clip group and the second clip group is larger, so that the bridge-type contact can be applied to more draw-out circuit breakers with different short-time withstand capacities, expanding the application range of the bridge-type contact.

[0017] In some possible practical ways, the part of the first clip group in contact with the first busbar includes a plurality of first contact parts arranged at intervals. And / or, the part of the second clip group in contact with the first busbar includes a plurality of second contact parts arranged at intervals.

[0018] In the example of the present application, by setting that the part of the first clip group in contact with the first busbar includes a plurality of first contact parts arranged at intervals, different first contact parts can all be in reliable contact with the first busbar, reducing the possibility that the first clip group and the first busbar are in unreliable contact and the effective contact area is small due to the uneven surface of the first busbar, improving the reliability of the contact between the first clip group and the first busbar, and reducing the temperature rise generated at the contact between the first clip group and the first busbar. The function of the plurality of second contact parts arranged at intervals is similar to that of the plurality of first contact parts arranged at intervals, and the example of the present application will not elaborate here.

[0019] In some possible practical ways, the first clip group includes a first clip and a first elastic piece connected to each other, and the second clip group includes a second clip and a second elastic piece connected to each other.

[0020] The first clip and the second clip cooperate to form a first clip opening and a second clip opening, and part of the first elastic piece abuts against the side of the first clip facing away from the second clip, and part of the second elastic piece abuts against the side of the second clip facing away from the first clip.

[0021] In the example of the present application, since the first elastic piece abuts against the side of the first clip facing away from the second clip and the first busbar is arranged between the first clip and the second clip, the first elastic piece can apply a force towards the first busbar to the first clip, thereby making the contact between the first clip and the first busbar closer, reducing the possibility that the bridge-type contact generates a high temperature rise due to the unreliable contact between the first clip and the first busbar, and ensuring the use reliability of the switch electrical appliance.

[0022] Since the second elastic piece abuts against the side of the second clamping piece facing away from the first clamping piece, and the first busbar is disposed between the first clamping piece and the second clamping piece, the second elastic piece can apply a force to the second clamping piece towards the first busbar, thereby making the contact between the second clamping piece and the first busbar closer, reducing the possibility of high temperature rise of the bridge-type contact due to unreliable contact between the second clamping piece and the first busbar, and ensuring the reliability of the use of the switching device.

[0023] In some possible practical ways, the first clamping piece includes a first clamping section, a connecting section, and a second clamping section. The first clamping section cooperates with the first busbar, the second clamping section cooperates with the second busbar, and the connecting section connects the first clamping section and the second clamping section.

[0024] The first elastic piece includes an abutting section and a fixing section. The fixing section cooperates with the second busbar. At least part of the fixing section is disposed on the side of the first clamping section facing away from the second clamping piece group. The abutting section is disposed on the side of the first clamping piece facing away from the second clamping piece group. One end of the abutting section far from the fixing section abuts against the first clamping section.

[0025] In the example of this application, both the first clamping section and the second clamping section are part of the first clamping piece. Through the cooperation between the first clamping section and the first busbar, the cooperation between the first clamping piece and the first busbar can be achieved. Through the cooperation between the second clamping section and the second busbar, the cooperation between the first clamping piece and the second busbar can be achieved. The fixing section is part of the first elastic piece. Through the cooperation between the fixing section and the second busbar, the cooperation between the first elastic piece and the second busbar can be achieved. One end of the abutting section far from the fixing section abuts against the first clamping section, which can apply a force to the first clamping section towards the first busbar, making the connection between the first clamping piece and the first busbar more reliable.

[0026] In some possible practical ways, the connecting section and the first clamping section cooperate to form a first included angle. The abutting section includes a first segment and a second segment connected to each other. The second segment is disposed farther from the fixing section than the first segment. The first segment and the second segment cooperate to form a second included angle, and the second included angle is smaller than the first included angle.

[0027] In the example of this application, since the second segment is disposed farther from the fixing section than the first segment, one end of the second segment facing away from the first segment will abut against the first clamping section. Also, since the connecting section and the first clamping section cooperate to form a first included angle, and the first segment and the first segment cooperate to form a second included angle, and the second included angle is smaller than the first included angle. Therefore, during the process of the second segment abutting against the first clamping section, the second segment and the first segment will undergo elastic deformation, applying a force to the second segment towards the first clamping section, making the contact between the first clamping section and the first busbar more reliable, and further reducing the possibility of high temperature rise of the bridge-type contact due to poor contact between the first busbar and the first clamping piece.

[0028] In some possible practical ways, the bridge-type contact also includes a mounting bracket, a first connecting member, and a second connecting member. Part of the mounting bracket is connected between the first elastic piece and the second bus bar. The first connecting member sequentially passes through the first position of the first elastic piece, part of the mounting bracket, the second bus bar, and the second clip group. The second connecting member sequentially passes through the second position of the first elastic piece, the first clip, the second bus bar, and the second clip group. The first position and the second position of the first elastic piece are spaced apart. Along the direction of the first elastic piece towards the second bus bar, the thickness of the mounting bracket is less than the thickness of the first clip.

[0029] In the example of this application, along the direction of the first elastic piece towards the second bus bar, the thickness of the mounting bracket is less than the thickness of the first clip, and part of the mounting bracket is connected between the first elastic piece and the second bus bar, and part of the first clip is located between the first elastic piece and the second bus bar. Therefore, in the process that the first connecting member sequentially connects the first position of the first elastic piece, part of the mounting bracket, the second bus bar, and the second clip group, and the second connecting member sequentially connects the second position of the first elastic piece, the first clip, and the second bus bar, there is a gap between the first elastic piece and the mounting bracket between the first position and the second position of the first elastic piece. This gap can provide a deformation space for the deformation of the first elastic piece between the first position and the second position, thereby ensuring the connection reliability between the first elastic piece, the second bus bar, and the mounting bracket.

[0030] In some possible practical ways, a plurality of first protrusions are spaced apart at the part where the first clip group contacts the first bus bar. And / or, a plurality of second protrusions are spaced apart at the part where the second clip group contacts the first bus bar.

[0031] In the example of this application, by providing the first protrusions at the part where the first clip group contacts the first bus bar, during the process of inserting the first bus bar into the first clip opening, the first protrusions can rub against the first bus bar, so that the first protrusions can scratch the oxide film on the surface of the first bus bar, thereby reducing the contact resistance between the first bus bar and the first clip group and reducing the temperature rise generated at the contact between the first clip group and the first bus bar. The function of the second protrusions is similar to that of the first protrusions, and the example of this application will not be elaborated here.

[0032] In a second aspect, this application provides a switching electrical appliance, which includes a housing assembly and the bridge-type contact provided in the first aspect and each possible implementation manner of the first aspect.

[0033] For the bridge-type contact provided in the second aspect and each possible design of the second aspect, the beneficial effects can refer to the beneficial effects brought by the first aspect and each possible implementation manner of the first aspect, which will not be elaborated here. Description of the Drawings

[0034] Figure 1Schematic structural diagram of a bridge-shaped contact provided for an example of this application.

[0035] Figure 2 Exploded structural diagram of a first clip group provided for an example of this application.

[0036] Figure 3 Schematic structural diagram of a first elastic piece provided for an example of this application.

[0037] Figure 4 Schematic structural diagram of a first clip provided for an example of this application.

[0038] Figure 5 Schematic structural diagram of a first clip provided for an example of this application.

[0039] Description of reference numerals:

[0040] 100, bridge-shaped contact; 110, first clip group; 111, first clip; 1111, second clamping section; 1112, connecting section; 1113, first clamping section; 1114, guiding section; 1115, first contact part; 1116, first protrusion; 112, first elastic piece; 1121, fixed section; 1122, abutting section; 11221, first sub-section; 11222, second sub-section; 1123, first heat dissipation hole; 1124, second heat dissipation hole; 1125, first connection structure; 120, second clip group; 130, first clamping opening; 140, elastic member; 150, mounting bracket; 160, first connecting member; 170, second connecting member; 200, second bus bar. 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. Obviously, 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] References to "examples" in this specification mean that a particular feature, structure, or characteristic described in connection with the examples can be included in at least one example of the present application. The phrase "example" appearing in various places in the specification does not necessarily refer 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] As used herein, the term "and / or" is merely a description of the association relationship between associated objects, indicating that there can be three relationships. 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. Additionally, the character " / " in this specification generally represents an "or" relationship between the associated objects before and after.

[0045] All directional terms used in the following description refer to the directions shown in the figures and do not limit the specific structures of the bridge-type contact and the switching device of the present application.

[0046] Furthermore, the terms "first", "second", etc. in the specification and claims of the present application or in the above-mentioned drawings are used to distinguish different objects and not 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, "a plurality of" means two or more (including two). Similarly, "a plurality of groups" means 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 mechanical structures can refer to a physical connection. For example, a physical connection can 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 can also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection can 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] Based on the above, an example of the present application provides a bridge-type contact and a switching device.

[0050] In order to enable those skilled in the art to better understand the solution of the present application, the bridge-type contact and the switching device provided by the examples of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0051] Exemplarily, an example of the present application provides a switching device.

[0052] The switch device may be any one of a circuit breaker, a relay, a contactor, etc. The switch device may include a housing assembly and a bridge-type contact.

[0053] The bridge contact can be installed in the housing assembly. A second busbar can be connected in the housing assembly.

[0054] Taking the switch electrical appliance as a drawer-type circuit breaker as an example, the drawer-type circuit breaker may include a drawer seat, a circuit breaker body, and a bridge-type contact. The bridge-type contact connects the drawer seat and the circuit breaker body to achieve electrical connection between the drawer seat and the circuit breaker body. The drawer seat is the housing assembly mentioned in the switch electrical appliance.

[0055] The drawer seat may have a receiving cavity, and the circuit breaker body may be installed in the receiving cavity, so as to facilitate the connection between the circuit breaker body and the drawer seat. In the event of a failure of the circuit breaker body, the circuit breaker body may be shaken out of the receiving cavity and replaced with a spare circuit breaker body, thereby improving the maintenance efficiency of the drawer-type circuit breaker.

[0056] The drawer-type circuit breaker can also be used as an isolator. When the circuit or equipment needs to be repaired, the circuit breaker body can be shaken out of the accommodating cavity to disconnect and isolate the circuit, so as to ensure the safety of the maintenance personnel during the maintenance of the circuit or equipment. Here, the circuit refers to the circuit electrically connected to the drawer-type circuit breaker, and the equipment refers to the equipment electrically connected to the drawer-type circuit breaker directly or indirectly.

[0057] A second busbar is connected in the drawer seat, and the circuit breaker body is connected to the first busbar. A second busbar can be connected to a bridge-type contact, and the end of the bridge-type contact facing away from the second busbar is connected to the first busbar. A second busbar can also be connected to multiple bridge-type contacts, and the end of the bridge-type contact facing away from the second busbar is connected to the first busbar. This application example does not make specific restrictions on this.

[0058] The structure of the circuit breaker body in the example of the present application is consistent with the structure of the circuit breaker body in the prior art, and will not be described in detail here. The specific structure of the bridge-type contact is detailed below, and will not be described in detail here.

[0059] Next, the bridge-type contacts mentioned in the drawer-type circuit breaker are explained in detail.

[0060] Exemplarily, the present application provides a bridge-type contact. Figure 1 A schematic diagram of the structure of a bridge-type contact provided as an example of this application, Figure 2 A schematic diagram of the exploded structure of a first clip group provided as an example of the present application.

[0061] Please refer to Figure 1 and Figure 2, the bridge-shaped contact 100 includes a first clip group 110, a second clip group 120, and an elastic member 140. The second clip group 120 is movably connected to the first clip group 110. The second clip group 120 and the first clip group 110 cooperate to form a first clip opening 130 and a second clip opening arranged in opposite directions. The first clip opening 130 clamps the first busbar, and the second clip opening clamps the second busbar 200.

[0062] The first clip group 110 includes a plurality of spaced first connection structures. The second clip group 120 includes a plurality of spaced second connection structures. The second connection structures correspond to the first connection structures.

[0063] The first end of the elastic member 140 is connected to the first connection structure, and the second end of the elastic member 140 is connected to the second connection structure. The number of elastic members 140 is less than or equal to the number of first connection structures.

[0064] The first clip group 110 includes at least one sheet-like structure. When there are a plurality of sheet-like structures, the arrangement direction of the plurality of sheet-like structures is parallel to the arrangement direction of the first clip group 110 and the second clip group 120.

[0065] The structure of the second clip group 120 is similar to that of the first clip group 110. The second clip group 120 includes at least one sheet-like structure. When there are a plurality of sheet-like structures, the arrangement direction of the plurality of sheet-like structures is parallel to the arrangement direction of the first clip group 110 and the second clip group 120. The number of sheet-like structures included in the second clip group 120 may be equal to or different from the number of sheet-like structures included in the first clip group 110. This application example does not make specific restrictions on this, as long as it is ensured that the first clip group 110 and the second clip group 120 can cooperate to connect the first busbar and the second busbar 200.

[0066] Compared with the prior art, in which the arrangement direction of the plurality of sheet-like structures in the clip group is perpendicular to the arrangement direction of the first clip group and the second clip group, in this application example, the arrangement direction of the plurality of sheet-like structures of the first clip group 110 is the same as the arrangement direction of the first clip group 110 and the second clip group 120. Therefore, in this application example, the contact area between the first clip group 110 and the first busbar is larger than the contact area between the clip and the first busbar in the prior art, and the contact area between adjacent sheet-like structures in this application example is larger than the contact area between adjacent two sheet-like structures in the prior art. Based on the resistance law, it is known that the contact resistance between different sheet-like structures is inversely proportional to the contact area. Based on the Joule's law, it is known that when the current is constant, the heat generated at the contact of different sheet-like structures is inversely proportional to the contact area. Therefore, the temperature rise generated at the contact between the bridge-shaped contact 100 provided in this application example and the first busbar is smaller.

[0067] The first clip group 110 and the second clip group 120 cooperate to form a first clip opening 130 and a second clip opening with opposite openings. The opening sizes of the first clip opening 130 and the second clip opening can be adjusted. At this time, the first clip group 110 and the second clip group 120 can be connected by a connecting shaft. The size of the first clip opening 130 can also be fixed. At this time, the size of the second clip opening can be adjusted by the elastic deformation of the first clip group 110 and the second clip group 120.

[0068] The first clip opening 130 is used to clamp the first bus bar. The second clip opening is connected to the second bus bar 200. The second clip opening can be fixedly connected to the second bus bar 200 through a connecting member, or the second clip opening can also clamp the second bus bar 200 through the clamping force of the second clip opening. In the example of this application, only the case where the first clip opening 130 clamps the first bus bar and the second clip opening is fixedly connected to the second bus bar 200 through a connecting member is described.

[0069] Both the first clip group 110 and the second clip group 120 can be in surface contact with the first bus bar.

[0070] The first clip group 110 includes a plurality of first connection structures arranged at intervals. The first connection structure can be provided only on the sheet-like structure in contact with the first bus bar, can be provided only on the sheet-like structure in the first clip group that is farthest from the first bus bar, or can also be provided on all clip structures included in the first clip group 110. The first connection structure can be a hook-like structure, a ring-like structure, a rod-like structure, a groove-like structure, etc. provided on the first clip group 110, as long as the first end of the elastic member 140 can be connected to the first connection structure. The second connection structure is similar to the first connection structure, and details are not repeated in the example of this application.

[0071] The number of the first connection structures is equal to that of the second connection structures, and the first connection structures and the second connection structures correspond to each other one by one.

[0072] The elastic member 140 can be a structure such as a spring or an elastic sheet. The number of the elastic members 140 is less than or equal to the number of the first connection structures. The number of the elastic members 140 can be odd or even.

[0073] The number of the elastic members 140 can be adjusted according to the short-time withstand current value of the draw-out circuit breaker. The short-time withstand current (Icw) refers to the ability of the draw-out circuit breaker to withstand 0.05, 0.1, 0.25, 0.5, or 1 s without tripping under certain voltage, short-circuit current, and power factor.

[0074] The elastic member 140 can be connected to the position of the first clip group 110 near the first clip opening 130, or the elastic member 140 can be connected to the position of the first clip group 110 near the second clip opening. The elastic member 140 can also be provided at the position of the first clip group 110 near the first clip opening 130, and at the same time, the elastic member 140 can be provided at the position of the first clip group 110 near the second clip opening.

[0075] Exemplarily, only the case where the elastic member 140 is provided at the position of the first clip group 110 near the first clip opening 130 is described here. When the short-time withstand current value of the draw-out circuit breaker is less than or equal to 50 kA, the numerical value of the elastic member 140 is zero. When the short-time withstand current value of the draw-out circuit breaker is greater than 50 kA and less than or equal to 60 kA, the numerical value of the elastic member 140 is 2. When the short-time withstand current value of the draw-out circuit breaker is greater than 60 kA and less than or equal to 70 kA, the numerical value of the elastic member 140 is 4.

[0076] Based on the above, in the example of the present application, the first clip group 110 and the second clip group 120 cooperate to form the first clip opening 130 and the second clip opening arranged in opposite directions. The first clip opening 130 clamps the first busbar, and the second clip opening clamps the second busbar 200. That is, the first busbar and the second busbar 200 can be connected through the cooperating first clip group 110 and the second clip group.

[0077] A plurality of first connection structures 1125 are provided at intervals in the first clip group 110, and a plurality of second connection structures are provided at intervals in the second clip group 120. The first connection structures 1125 correspond to the second connection structures. The first end of the elastic member 140 can be connected to the first connection structure 1125, and the second end of the elastic member 140 can be connected to the second connection structure. The number of the elastic members 140 is less than or equal to the number of the first connection structures 1125. That is, the number of the elastic members 140 of the bridge-type contact 100 can be adjusted. By adjusting the number of the elastic members 140, the acting forces exerted by the elastic members 140 on the first clip group 110 through the first connection structures 1125 can be different, and the acting forces exerted by the elastic members 140 on the second clip group 120 through the second connection structures can be different, so that the clamping forces at the first clip opening 130 and the second clip opening are different. Furthermore, the bridge-type contact 100 can be applicable to circuit breakers with different short-time withstand capabilities, and the applicable range of the bridge-type contact 100 can be improved.

[0078] When the elastic member 140 is a spring, a clamping shaft can be installed inside the elastic member 140.

[0079] Based on this, during the operation of the bridge-type contact 100, when the first clip group 110 moves relative to the second clip group 120, the clamping shaft can be clamped between the first clip group 110 and the second clip group 120, reducing the possibility that the minimum distance between the first clip group 110 and the second clip group 120 is less than the opening distance of the switching device, and ensuring the reliability of the use of the switching device.

[0080] Based on the bridge-type contact 100 provided in the above example, Figure 3 For a schematic structural diagram of a first elastic piece provided in an example of the present application, please refer to Figure 1 And Figure 3 , the first clip group 110 is provided with a first heat dissipation hole 1123 and a second heat dissipation hole 1124 at intervals. A first connection structure 1125 is formed between the first heat dissipation hole 1123 and the second heat dissipation hole 1124. The first end of the elastic member 140 is connected to the first connection structure 1125.

[0081] The second clip group 120 is provided with a third heat dissipation hole and a fourth heat dissipation hole at intervals. A second connection structure is formed between the third heat dissipation hole and the fourth heat dissipation hole. The second end of the elastic member 140 is connected to the second connection structure.

[0082] The arrangement direction of the first heat dissipation hole 1123 and the second heat dissipation hole 1124 can be perpendicular to the direction in which the first busbar is inserted into the first clip 130, or can be parallel to the direction in which the first busbar is inserted into the first clip 130, or there can be an included angle between the arrangement direction of the first heat dissipation hole 1123 and the second heat dissipation hole 1124 and the direction in which the first busbar is inserted into the first clip 130.

[0083] The first heat dissipation hole 1123 can be a hole-shaped structure with a regular shape such as a round hole or a rectangular hole, or can also be a hole-shaped structure with an irregular shape. The shape of the second heat dissipation hole 1124 can be the same as or different from the shape of the first heat dissipation hole 1123. The number of the first heat dissipation holes 1123 and the number of the second heat dissipation holes 1124 can be equal or unequal. The present application example does not make specific restrictions on this, as long as it is ensured that the first end of the elastic member 140 can be connected between the first heat dissipation hole 1123 and the second heat dissipation hole 1124.

[0084] The positional relationship between the third heat dissipation hole and the fourth heat dissipation hole is similar to the positional relationship between the first heat dissipation hole 1123 and the second heat dissipation hole 1124, and the shape of the third heat dissipation hole and the fourth heat dissipation hole is similar to the shape of the first heat dissipation hole 1123. The present application example will not expand the description here.

[0085] In the example of this application, the first heat dissipation holes 1123 and the second heat dissipation holes 1124 are arranged at intervals. The first end of the elastic member 140 can be connected to the part between the first heat dissipation holes 1123 and the second heat dissipation holes 1124, that is, the first connection structure 1125 is the part between the first heat dissipation holes 1123 and the second heat dissipation holes 1124. The third heat dissipation holes and the fourth heat dissipation holes are arranged at intervals. The second end of the elastic member 140 can be connected to the part between the third heat dissipation holes and the fourth heat dissipation holes, that is, the second connection structure is the part between the third heat dissipation holes and the fourth heat dissipation holes. Based on this, the first connection structure 1125 is a part of the first clip group 110, and the second connection structure is a part of the second clip group 120, which can avoid setting connection structures protruding from the clip group and reduce the manufacturing cost of the bridge-type contact 100.

[0086] In addition, taking the cooperation between the first clip group 110 and the first busbar as an example, during the use of the bridge-type contact 100, the temperature at the contact position between the first clip group 110 and the first busbar rises, causing the air between the first clip group 110 and the first busbar to expand due to heat. As a result, the gas pressure between the first clip group 110 and the first busbar is greater than the gas pressure at the part of the first clip group 110 away from the first busbar. The gas between the first clip group 110 and the first busbar reaches the space of the first clip group 110 away from the first busbar through the first heat dissipation holes 1123 and the second heat dissipation holes 1124, which can improve the heat dissipation efficiency at the contact position between the first clip group 110 and the first busbar, reduce the temperature rise at the contact position between the first clip group 110 and the first busbar, and ensure the reliability of the use of the switching electrical appliance. The functions of the third heat dissipation holes and the fourth heat dissipation holes are similar to those of the first heat dissipation holes 1123 and the second heat dissipation holes, and are not elaborated in this example of the application.

[0087] Based on the bridge-type contact 100 provided in the above example, please refer to Figure 2 and Figure 3 , both the first heat dissipation holes 1123 and the second heat dissipation holes 1124 are provided with multiple ones at intervals.

[0088] The multiple first heat dissipation holes 1123 can be randomly distributed in the first clip group 110, or can be evenly distributed in the first clip group 110.

[0089] Exemplarily, when the arrangement direction of the first heat dissipation holes 1123 and the second heat dissipation holes 1124 is parallel to the direction in which the first busbar is inserted into the first clip opening 130, the arrangement direction of the multiple first heat dissipation holes 1123 can be perpendicular to the direction in which the first busbar is inserted into the first clip opening 130, or there can be an included angle between the arrangement direction of the multiple first heat dissipation holes 1123 and the direction in which the first busbar is inserted into the first clip opening 130. This example of the application does not make specific limitations on this.

[0090] In the example of this application, a plurality of first heat dissipation holes 1123 and second heat dissipation holes 1124 are provided at intervals, which means that there can be a plurality of parts between the first heat dissipation holes 1123 and the second heat dissipation holes 1124, that is, a plurality of first connection structures 1125 can be provided, and a plurality of elastic members 140 connected to the first connection structure 1125 can also be provided. The range of the acting force exerted by the elastic member 140 on the first clip group 110 and the second clip group 120 is larger, so that the bridge-type contact 100 can be applied to more drawer-type circuit breakers with different short-time withstand capacities, expanding the application range of the bridge-type contact 100.

[0091] The arrangement of the third heat dissipation hole and the fourth heat dissipation hole is similar to that of the first heat dissipation hole 1123 and the second heat dissipation hole 1124, and the functions are similar. This application example will not elaborate here.

[0092] Based on the bridge-type contact 100 provided in the above example, Figure 4 For a schematic structural diagram of a first clip provided in the example of this application, please refer to Figure 2 And Figure 4 , the parts of the first clip group 110 in contact with the first bus bar include a plurality of first contact parts 1115 arranged at intervals. And / or, the parts of the second clip group 120 in contact with the first bus bar include a plurality of second contact parts arranged at intervals.

[0093] At least one groove structure can be provided on the sheet-like structure of the first clip group 110 in contact with the first bus bar. Only one groove structure can be provided, or two, three, four, etc. of groove structures can be provided. The groove structure can penetrate the sheet-like structure in contact with the first bus bar, or the groove structure can not penetrate the sheet-like structure in contact with the first bus bar, as long as the groove structure can make the parts of the first clip group 110 in contact with the first bus bar be arranged at intervals to form a plurality of first contact parts 1115 arranged at intervals.

[0094] Along the arrangement direction of the plurality of first contact parts 1115, the sizes of different first contact parts 1115 can be the same or different.

[0095] The groove structure can also penetrate all the clip structures in the first clip group 110. This application example does not make specific limitations on this.

[0096] The arrangement of the second contact part is similar to that of the first contact part 1115. For the arrangement of the second contact part, please refer to the relevant description of the first contact part 1115. This application example will not elaborate here.

[0097] The second contact part and the first contact part 1115 can be symmetrical, or the second contact part and the first contact part 1115 can be arranged staggeredly.

[0098] The part of the bridge-type contact 100 where only the first clip group 110 contacts the first busbar may include a plurality of spaced-apart first contact parts 1115, or the part of the second clip group 120 where it contacts the first busbar may include a plurality of spaced-apart second contact parts. It is also possible to simultaneously set the part of the first clip group 110 where it contacts the first busbar to include a plurality of spaced-apart first contact parts 1115, and the part of the second clip group 120 where it contacts the first busbar to include a plurality of spaced-apart second contact parts. The present application example does not make specific restrictions on this.

[0099] In the example of the present application, by setting the part of the first clip group 110 that contacts the first busbar to include a plurality of spaced-apart first contact parts 1115, different first contact parts 1115 can all reliably contact the first busbar, reducing the possibility that due to the uneven surface of the first busbar, the contact between the first clip group 110 and the first busbar is unreliable and the effective contact area is small. It can improve the reliability of the contact between the first clip group 110 and the first busbar and reduce the temperature rise at the contact between the first clip group 110 and the first busbar. The function of the plurality of second contact parts arranged at intervals is similar to that of the plurality of first contact parts 1115 arranged at intervals, and the present application example will not elaborate on this here.

[0100] Based on the bridge-type contact 100 provided in the above example, please refer to Figure 1 and Figure 2 , the first clip group 110 includes a first clip 111 and a first elastic piece 112 connected to each other, and the second clip group 120 includes a second clip and a second elastic piece connected to each other.

[0101] The first clip 111 and the second clip cooperate to form a first clip opening 130 and a second clip opening. Part of the first elastic piece 112 abuts against the side of the first clip 111 facing away from the second clip, and part of the second elastic piece abuts against the side of the second clip facing away from the first clip 111.

[0102] Both the first clip 111 and the first elastic piece 112 are sheet-like structures in the first clip group 110 mentioned above.

[0103] The first clip 111 and the second clip cooperate to form a first clip opening 130 and a second clip opening. Through the first clip opening 130, the connection between the bridge-type contact 100 and the first busbar can be realized, and through the second clip opening, the connection between the bridge-type contact 100 and the second busbar 200 can be realized.

[0104] The end of the first elastic piece 112 facing the first clip opening 130 can abut against the position of the first clip 111 that contacts the first busbar and faces away from the first busbar. The end of the first elastic piece 112 can also abut against other positions of the first busbar.

[0105] The end of the second elastic piece facing the first clamping opening 130 can abut against the position where the second clamping piece contacts the first busbar and faces away from the first busbar. The end of the second elastic piece can also abut against other positions of the first busbar.

[0106] In the example of this application, since the first elastic piece 112 abuts against the side of the first clamping piece 111 facing away from the second clamping piece, and the first busbar is arranged between the first clamping piece 111 and the second clamping piece, therefore, the first elastic piece 112 can exert a force on the first clamping piece 111 towards the first busbar, thereby making the contact between the first clamping piece 111 and the first busbar closer, reducing the possibility that the bridge-type contact 100 generates a high temperature rise due to the unreliable contact between the first clamping piece 111 and the first busbar, and ensuring the reliability of the use of the switching electrical appliance.

[0107] Since the second elastic piece abuts against the side of the second clamping piece facing away from the first clamping piece 111, and the first busbar is arranged between the first clamping piece 111 and the second clamping piece, therefore, the second elastic piece can exert a force on the second clamping piece towards the first busbar, thereby making the contact between the second clamping piece and the first busbar closer, reducing the possibility that the bridge-type contact 100 generates a high temperature rise due to the unreliable contact between the second clamping piece and the first busbar, and ensuring the reliability of the use of the switching electrical appliance.

[0108] The first clamping piece 111 and the second clamping piece are similar in structure, and the first elastic piece 112 and the second elastic piece are similar in structure. Next, only taking the first clamping piece 111 as an example, the structures of the first clamping piece 111 and the second clamping piece will be described exemplarily, and taking the first elastic piece 112 as an example, the structures of the first elastic piece 112 and the second elastic piece will be described exemplarily.

[0109] Exemplarily, Figure 5 For a schematic structural view of a first clamping piece provided in the example of this application, please refer to Figure 1 and Figure 5 , the first clamping piece 111 includes a first clamping section 1113, a connecting section 1112, and a second clamping section 1111. The first clamping section 1113 cooperates with the first busbar, the second clamping section 1111 cooperates with the second busbar 200, and the connecting section 1112 connects the first clamping section 1113 and the second clamping section 1111.

[0110] An angle can be formed between the connecting section 1112 and the first clamping section 1113. The cooperation between the first clamping section 1113 and the second clamping piece can be connected to the first busbar.

[0111] The connecting section and the second clamping section can be arranged in a plane, and an angle can also be formed between the connecting section 1112 and the second clamping section 1111. The cooperation between the second clamping section 1111 and the second clamping piece can be connected to the second busbar 200.

[0112] Please refer to Figure 1 and Figure 3, the first elastic piece 112 includes an abutting section 1122 and a fixing section 1121. The fixing section 1121 cooperates with the second bus bar 200, and at least part of the fixing section 1121 is disposed on the side of the first clamping section 1113 away from the second clip group 120. The abutting section 1122 is disposed on the side of the first clip 111 away from the second clip group 120. One end of the abutting section 1122 away from the fixing section 1121 abuts against the first clamping section 1113.

[0113] In the example of this application, both the first clamping section 1113 and the second clamping section 1111 are part of the first clip 111. Through the cooperation between the first clamping section 1113 and the first bus bar, the cooperation between the first clip 111 and the first bus bar can be realized. Through the cooperation between the second clamping section 1111 and the second bus bar 200, the cooperation between the first clip 111 and the second bus bar 200 can be realized. The fixing section 1121 is part of the first elastic piece 112. Through the cooperation between the fixing section 1121 and the second bus bar 200, the cooperation between the first elastic piece 112 and the second bus bar 200 can be realized. One end of the abutting section 1122 away from the fixing section 1121 abuts against the first clamping section 1113, which can apply a force towards the first bus bar to the first clamping section 1113, making the contact between the first clip 111 and the first bus bar more reliable.

[0114] Based on the bridge-type contact 100 provided in the above example, please refer to Figure 2 , the connecting section 1112 and the first clamping section 1113 cooperate to form a first included angle. The abutting section 1122 includes a first segment 11221 and a second segment 11222 connected to each other. The second segment 11222 is disposed farther away from the fixing section 1121 than the first segment 11221. The first segment 11221 and the second segment 11222 cooperate to form a second included angle, and the second included angle is smaller than the first included angle.

[0115] The first included angle formed by the cooperation between the connecting section 1112 and the first clamping section 1113 can be an obtuse angle. The second included angle formed by the cooperation between the first segment 11221 and the second segment 11222 can also be an obtuse angle. The angular difference between the second included angle and the first included angle can be values such as 2° and 4°.

[0116] Exemplarily, the value of the second included angle can be 116°, and the value of the first included angle can be 120°, etc.

[0117] In the example of this application, the second segment 11222 is arranged farther from the fixed segment 1121 than the first segment 11221. Therefore, one end of the second segment 11222 facing away from the first segment 11221 will abut against the first clamping segment 1113. Also, since the connecting segment 1112 and the first clamping segment 1113 form a first included angle, and the first segment 11221 and the first segment 11221 form a second included angle, and the second included angle is smaller than the first included angle. Therefore, during the process of the second segment 11222 abutting against the first clamping segment 1113, elastic deformation will occur between the second segment 11222 and the first segment 11221, applying a force towards the first clamping segment 1113 to the second segment 11222, making the contact between the first clamping segment 1113 and the first busbar more reliable, and further reducing the possibility of a relatively high temperature rise of the bridge-type contact 100 due to poor contact between the first busbar and the first clip 111.

[0118] Based on the bridge-type contact 100 provided in the above example, please refer to Figure 4 and Figure 5 , the first clip 111 further includes a guiding segment 1114. The guiding segment 1114 is connected to one end of the first clamping segment 1113 facing away from the connecting segment 1112, and the guiding segment 1114 is bent in a direction away from the first busbar.

[0119] Based on this, since the guiding segment 1114 is connected to one end of the first clamping segment 1113 facing away from the connecting segment 1112, during the process of the first busbar being inserted into the first clamping opening 130, the first busbar first contacts the guiding segment 1114. Since the guiding segment 1114 is bent in a direction away from the first busbar, the size of the first clamping opening 130 gradually becomes smaller along the direction of the first busbar being inserted into the first clamping opening 130. Therefore, during the process of the first busbar being inserted into the first clamping opening 130, the first busbar can first extend into the position where the size of the first clamping opening 130 is the largest, facilitating the insertion of the first busbar into the first clamping opening 130 and improving the assembly efficiency of the first busbar and the bridge-type contact 100.

[0120] Based on the bridge-type contact 100 provided in the above example, please refer to Figure 1 , the bridge-type contact 100 further includes a mounting bracket 150, a first connecting member 160, and a second connecting member 170. Part of the mounting bracket 150 is connected between the first elastic piece 112 and the second busbar 200. The first connecting member 160 sequentially passes through the first position of the first elastic piece 112, part of the mounting bracket 150, the second busbar 200, and the second clip group 120. The second connecting member 170 sequentially passes through the second position of the first elastic piece 112, the first clip 111, the second busbar 200, and the second clip group 120. The first position and the second position of the first elastic piece 112 are spaced apart. Along the direction of the first elastic piece 112 facing the second busbar 200, the thickness of the mounting bracket 150 is smaller than the thickness of the first clip 111.

[0121] One end of the mounting bracket 150 can be connected to the housing assembly of the switching electrical appliance, and the other end of the mounting bracket 150 can be located between the first elastic piece 112 and the second busbar 200. Based on this, the connection between the bridge-type contact 100 and the housing assembly can be achieved.

[0122] The first connecting member 160 and the second connecting member 170 can be the same or different. Exemplarily, the first connecting member 160 can be a threaded member such as a bolt, and the first connecting member 160 can also be a riveted member. In the example of the present application, only the case where the first connecting member 160 is a riveted member is described.

[0123] Compared with the first connecting member 160 and the second connecting member 170 being set as threaded members, setting both the first connecting member 160 and the second connecting member 170 as riveted members can ensure the connection reliability between the first elastic piece 112, the second busbar 200, and the mounting bracket 150.

[0124] In the example of the present application, along the direction of the first elastic piece 112 towards the second busbar 200, the thickness of the mounting bracket 150 is less than the thickness of the first clip 111, and a part of the mounting bracket 150 is connected between the first elastic piece 112 and the second busbar 200, and a part of the first clip 111 is located between the first elastic piece 112 and the second busbar 200. Therefore, in the process that the first connecting member 160 sequentially connects the first position of the first elastic piece 112, a part of the mounting bracket 150, the second busbar 200, and the second clip group 120, and the second connecting member 170 sequentially connects the second position of the first elastic piece 112, the first clip 111, and the second busbar 200, there is a gap between the first elastic piece 112 and the mounting bracket 150 between the first position and the second position of the first elastic piece 112. This gap can provide a deformation space for the deformation of the first elastic piece 112 between the first position and the second position, thereby ensuring the connection reliability between the first elastic piece 112, the second busbar 200, and the mounting bracket 150.

[0125] Based on the bridge-type contact 100 provided in the above example, please refer to Figure 1 and Figure 4 , a plurality of first protrusions 1116 are arranged at intervals at the part where the first clip group 110 contacts the first busbar. And / or, a plurality of second protrusions are arranged at intervals at the part where the second clip group 120 contacts the first busbar.

[0126] The first protrusions 1116 can be protrusion structures such as convex points and convex edges. The plurality of first protrusions 1116 can be randomly distributed to the part where the first clip group 110 contacts the first one, and the plurality of first protrusions 1116 can also be evenly distributed to the part where the first clip group 110 contacts the first one. Along the direction of the first busbar inserted into the first clip opening 130, the plurality of first protrusions 1116 can be arranged staggeredly.

[0127] The bridge-type contact 100 may be provided with a first protrusion 1116 at the portion where the first clip group 110 contacts the first busbar, or may be provided with a second protrusion only at the portion where the second clip group 120 contacts the first busbar, or may be provided with a first protrusion 1116 at the portion where the first clip group 110 contacts the first busbar and a second protrusion at the portion where the second clip group 120 contacts the first busbar at the same time.

[0128] In the example of this application, by providing the first protrusion 1116 at the portion where the first clip group 110 contacts the first busbar, during the process of inserting the first busbar into the first clip opening 130, the first protrusion 1116 can rub against the first busbar, so that the first protrusion 1116 can scratch the oxide film on the surface of the first busbar, thereby reducing the contact resistance between the first busbar and the first clip group 110, and reducing the temperature rise generated at the contact between the first clip group 110 and the first busbar. The function of the second protrusion is similar to that of the first protrusion 1116, and the example of this application will not be elaborated here.

[0129] Finally, it should be noted that the above embodiments are only specific implementation manners of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A bridge-type contact, characterized in that, include: The first clip group; A second clip group is movably connected to the first clip group, the second clip group cooperates with the first clip group to form a first clamping opening and a second clamping opening that are arranged opposite to each other, the first clamping opening clamps the first busbar, and the second clamping opening clamps the second busbar; The first clip group includes a plurality of first connection structures that are spaced apart, and the second clip group includes a plurality of second connection structures that are spaced apart, and the second connection structures correspond to the first connection structures; an elastic member, a first end of the elastic member being connected to the first connection structure, a second end of the elastic member being connected to the second connection structure, and the number of the elastic members being less than or equal to the number of the first connection structures; Wherein, the first clip group is provided with a first heat dissipation hole and a second heat dissipation hole at intervals, the first heat dissipation hole and the second heat dissipation hole form the first connection structure, and the first end of the elastic member is connected to the first connection structure; The second clip group is provided with a third heat dissipation hole and a fourth heat dissipation hole at intervals, the second connection structure is formed between the third heat dissipation hole and the fourth heat dissipation hole, and the second end of the elastic member is connected to the second connection structure.

2. The bridge-type contact according to claim 1, wherein A plurality of the first heat dissipation holes and a plurality of the second heat dissipation holes are arranged at intervals.

3. The bridge contact according to claim 1, characterized in that: The contact portion between the first clip group and the first busbar includes a plurality of first contact portions arranged at intervals; and / or, The portion where the second clip group contacts the first busbar includes a plurality of second contact portions that are spaced apart.

4. The bridge-type contact according to claim 1, characterized in that, The first clip set includes a first clip and a first elastic sheet connected to each other, and the second clip set includes a second clip and a second elastic sheet connected to each other; The first clip cooperates with the second clip to form the first clip opening and the second clip opening, part of the first elastic sheet abuts against a side of the first clip away from the second clip, and part of the second elastic sheet abuts against a side of the second clip away from the first clip.

5. The bridge contact according to claim 4, characterized in that: The first clamping piece includes a first clamping section, a connecting section and a second clamping section, the first clamping section cooperates with the first busbar, the second clamping section cooperates with the second busbar, and the connecting section connects the first clamping section and the second clamping section; The first spring piece includes an abutment section and a fixed section, the fixed section is connected to the second busbar, at least part of the fixed section is arranged on the side of the second clamping section away from the second clamping piece group, the abutment section is arranged on the side of the first clamp away from the second clamping piece group, and one end of the abutment section away from the fixed section abuts against the first clamping section.

6. The bridge-type contact according to claim 5, wherein The connecting section cooperates with the first clamping section to form a first angle; The abutting section includes a first section and a second section connected to each other. The second section is arranged farther away from the fixing section than the first section. The first section and the second section cooperate to form a second angle, and the second angle is smaller than the first angle.

7. The bridge-type contact according to claim 4, characterized in that, Also includes: A mounting bracket, part of which is connected between the first elastic sheet and the second busbar; The first connecting piece is sequentially passed through the first position of the first elastic piece, a part of the mounting bracket, the second busbar, and the second clip group; The second connecting piece is sequentially passed through the second position of the first elastic piece, the first clip, and the second busbar. The first position of the first elastic piece and the second position of the first elastic piece are spaced apart. Along the direction of the first elastic piece towards the second busbar, the thickness of the mounting bracket is less than the thickness of the first clip.

8. The bridge-type contact according to claim 1, wherein A plurality of first protrusions are spaced apart at the part where the first clip group contacts the first busbar; and / or A plurality of second protrusions are spaced apart at the part where the second clip group contacts the first busbar.

9. A switching device, characterized in that, It includes a housing assembly and the bridge-type contact according to any one of claims 1 to 8.

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