Bridge type contact and switching device

Abstract

The invention provides a bridge-type contact and a switching electric appliance, and relates to the technical field of low-voltage electric appliances. The bridge type contact comprises a first clamping piece group, a second clamping piece group and an elastic piece. The second clamping piece group is movably connected with the first clamping piece group, the second clamping piece group and the first clamping piece group are matched to form a first clamping opening and a second clamping opening which are arranged oppositely, the first clamping opening clamps a first busbar, and the second clamping opening clamps a second busbar. The first clamping piece set comprises a plurality of first connecting structures arranged at intervals, the second clamping piece set comprises a plurality of second connecting structures arranged at intervals, and the second connecting structures correspond to the first connecting structures. The first ends of the elastic pieces are connected to the first connecting structures, the second ends of the elastic pieces are connected to the second connecting structures, and the number of the elastic pieces is smaller than or equal to that of the first connecting structures. According to the bridge-type contact provided by the invention, the number of the elastic pieces can be adjusted, so that the bridge-type contact can be suitable for switching devices with different short-time endurance capacities, and the application range of the bridge-type contact is widened.

Description

Technical Field

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

[0002] Bridge contacts are widely used in switching devices, such as circuit breakers, relays, and contactors. Whether the switching devices can be used reliably depends largely on the performance of the bridge contacts.

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

[0004] Based on the structure of existing bridge-type contacts, bridge-type contacts of the same specification can only be applied to drawer-type circuit breakers within the corresponding short-time withstand current value range. Summary of the invention

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

[0006] In a first aspect, the present application provides an example of a bridge-type contact, the bridge-type contact comprising 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 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.

[0007] The first clip group includes a plurality of first connection structures that are spaced apart from each other, and the second clip group includes a plurality of second connection structures that are spaced apart from each other, and 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, 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 structure.

[0009] In the example of the present application, the first clip group and the second clip group can cooperate to form a first clamp and a second clamp set opposite to each other, the first clamp clamps the first busbar, and the second clamp clamps the second busbar, that is, the connection between the first busbar and the second busbar can be achieved through the matching first clip group and the second clip group.

[0010] The first clip group is provided with a plurality of first connection structures at intervals, and the second clip group is provided with a plurality of second connection structures at intervals, the first connection structure corresponds to the second connection structure, the first end of the elastic member can be connected to the first connection structure, and 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 is adjustable. By adjusting the number of elastic members, the force applied by the elastic member to the first clip group through the first connection structure can be different, and the force applied by the elastic member to the second clip group through the second connection structure can be different, so that the clamping force at the first clamping opening and the second clamping opening are different, thereby making the bridge-type contact suitable for circuit breakers with different short-term tolerance capabilities, and the applicable range of the bridge-type contact can be improved.

[0011] In some possible practical embodiments, 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 the present 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 portion between the first heat dissipation hole and the second heat dissipation hole, that is, the first connection structure is the portion 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 portion between the third heat dissipation hole and the fourth heat dissipation hole, that is, the second connection structure is the portion between the third heat dissipation hole and the fourth heat dissipation hole. Based on this, the first connection structure is part of the first clip group, and the second connection structure is part of the second clip group, which can avoid setting a connection structure protruding from the clip group, thereby reducing the manufacturing cost of the bridge-type contact.

[0014] In addition, taking the cooperation of 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 increases, causing the air between the first clip group and the first busbar to expand due to heat, thereby causing the gas pressure between the first clip group and the first busbar to be greater than the gas pressure at the position where the first clip group is away from the first busbar. The gas between the first clip group and the first busbar passes through the first heat dissipation hole and the second heat dissipation hole to reach the space where the first clip group is away from the first busbar, 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 reliability of the switch. The role played by the third heat dissipation hole and the fourth heat dissipation hole is similar to that played by the first heat dissipation hole and the second heat dissipation hole, and the examples of this application are not repeated here.

[0015] In some possible implementations, a plurality of the first heat dissipation holes and a plurality of the second heat dissipation holes are arranged at intervals.

[0016] In the example of the present application, the first heat dissipation hole and the second heat dissipation hole are both provided with a plurality of intervals, which means that there can be a plurality of locations between the first heat dissipation hole and the second heat dissipation hole, that is, there can be a plurality of first connection structures, and there can also be a plurality of elastic members connected to the first connection structure. By adjusting the number of elastic members, the range of the force applied by the elastic members to the first clip group and the second clip group is larger, so that the bridge-type contact can be applied to more drawer-type circuit breakers with different short-term tolerance capabilities, thereby expanding the application range of the bridge-type contact.

[0017] In some possible implementations, the portion where the first clip group contacts the first busbar includes a plurality of first contact portions disposed at intervals, and / or the portion where the second clip group contacts the first busbar includes a plurality of second contact portions disposed at intervals.

[0018] In the example of the present application, by setting the part where the first clip group contacts the first busbar to include 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, which can improve the reliability of the contact between the first clip group and the first busbar and reduce the temperature rise generated at the contact between the first clip group and the first busbar. The role played by the plurality of second contact parts arranged at intervals is similar to that played by the plurality of first contact parts arranged at intervals, and the example of the present application will not be repeated here.

[0019] In some possible implementations, 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.

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

[0021] In the example of the present application, since the first spring clip 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 spring clip can apply a force toward the first busbar to the first clip, thereby making the contact between the first clip and the first busbar closer, reducing the possibility of a higher temperature rise of the bridge contact due to unreliable contact between the first clip and the first busbar, thereby ensuring the reliability of the switch electrical appliance.

[0022] Since the second spring piece abuts against the side of the second clip facing away from the first clip, and the first busbar is arranged between the first clip and the second clip, the second spring piece can apply a force toward the first busbar to the second clip, thereby making the contact between the second clip and the first busbar closer, reducing the possibility of a higher temperature rise of the bridge contact due to unreliable contact between the second clip and the first busbar, thereby ensuring the reliability of the switch electrical appliance.

[0023] In some possible implementations, the first clip includes a first clamping segment, a connecting segment, and a second clamping segment. The first clamping segment cooperates with the first busbar, the second clamping segment cooperates with the second busbar, and the connecting segment connects the first clamping segment and the second clamping segment.

[0024] The first spring piece includes an abutment section and a fixed section, the fixed section cooperates with the second busbar, at least part of the fixed section is arranged on the side of the first 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.

[0025] In the example of the present application, the first clamping section and the second clamping section are both part of the first clamp, and the first clamp and the first busbar can be matched by the cooperation of the first clamping section and the first busbar. The first clamp and the second busbar can be matched by the cooperation of the second clamping section and the second busbar. The fixed section is part of the first spring sheet, and the first spring sheet and the second busbar can be matched by the cooperation of the fixed section and the second busbar. The end of the abutting section away from the fixed section abuts against the first clamping section, and a force can be applied to the first clamping section toward the first busbar, so that the connection between the first clamp and the first busbar is more reliable.

[0026] In some possible practical modes, the connecting section cooperates with the first clamping section to form a first angle. The abutting section includes a first segment and a second segment connected to each other, the second segment is arranged farther from the fixing section than the first segment, and the first segment cooperates with the second segment to form a second angle, which is smaller than the first angle.

[0027] In the example of the present application, the second segment is arranged farther from the fixed segment than the first segment, so the end of the second segment facing away from the first segment will abut against the first clamping segment. In addition, since the connecting segment cooperates with the first clamping segment to form a first angle, the first segment cooperates with the first segment to form a second angle, and the second angle is smaller than the first angle, therefore, in the process of the second segment abutting against the first clamping segment, the second segment and the first segment will undergo elastic deformation, exerting a force toward the first clamping segment on the second segment, making the contact between the first clamping segment and the first busbar more reliable, further reducing the possibility of a higher temperature rise of the bridge contact due to poor contact between the first busbar and the first clip.

[0028] In some possible practical ways, the bridge contact further includes a mounting bracket, a first connecting member, and a second connecting member. Part of the mounting bracket is connected between the first spring sheet and the second busbar. The first connecting member is sequentially arranged through the first position of the first spring sheet, part of the mounting bracket, the second busbar, and the second clip group. The second connecting member is sequentially arranged through the second position of the first spring sheet, the first clip, the second busbar, and the second clip group, the first position of the first spring sheet is spaced from the second position of the first spring sheet, and the thickness of the mounting bracket is less than the thickness of the first clip along the direction from the first spring sheet to the second busbar.

[0029] In the example of the present application, along the direction from the first spring sheet to the second busbar, 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 spring sheet and the second busbar, and part of the first clip is located between the first spring sheet and the second busbar. Therefore, in the process where the first connector sequentially connects the first position of the first spring sheet, part of the mounting bracket, the second busbar, and the second clip group, and the second connector sequentially connects the second position of the first spring sheet, the first clip, and the second busbar, there is a gap between the first spring sheet and the mounting bracket between the first position of the first spring sheet and the second position of the first spring sheet, and the gap can provide deformation space for the deformation of the first spring sheet between the first position and the second position, thereby ensuring the connection reliability between the first spring sheet, the second busbar, and the mounting bracket.

[0030] In some possible implementations, a plurality of first protrusions are provided at intervals at the contacting portion of the first clip set and the first busbar, and / or a plurality of second protrusions are provided at intervals at the contacting portion of the second clip set and the first busbar.

[0031] In the example of the present application, by providing the first protrusion at the position where the first clip group contacts the first busbar, the first protrusion can rub against the first busbar during the process of inserting the first busbar into the first clamping opening, so that the first protrusion 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, and reducing the temperature rise generated at the contact point between the first clip group and the first busbar. The second protrusion plays a similar role to the first protrusion, and the example of the present application will not be repeated here.

[0032] In a second aspect, the present application provides a switching device, which includes a housing assembly and a bridge-type contact provided in the above-mentioned first aspect and each possible implementation of the first aspect.

[0033] The beneficial effects of the bridge-type contact provided in the second aspect and each possible design of the second aspect can be referred to the beneficial effects brought about by the first aspect and each possible implementation manner of the first aspect, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1A schematic diagram of the structure of a bridge-type contact provided as an example of this application.

[0035] Figure 2 A schematic diagram of the exploded structure of a first clip group provided as an example of the present application.

[0036] Figure 3 A schematic diagram of the structure of a first spring provided as an example of this application.

[0037] Figure 4 A schematic diagram of the structure of a first clip provided as an example of this application.

[0038] Figure 5 A schematic diagram of the structure of a first clip provided as an example of this application.

[0039] Description of reference numerals: 100, bridge-type 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 portion; 1116, first protrusion; 112, first spring piece; 1121, fixing section; 1122, abutting section; 11221, first segment; 11222, second segment; 1123, first heat dissipation hole; 1124, second heat dissipation hole; 1125, first connecting 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 busbar. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the examples of this application clearer, the technical solution in the examples of this application will be clearly and completely described below in conjunction with the drawings in the examples of this application. Obviously, the described examples are part of the examples of this application, not all of them. Based on the examples in this application, all other examples obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the 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 specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0042] Reference to "examples" herein means that a particular feature, structure, or characteristic described in conjunction with the examples may be included in at least one example of the present application. The appearance of the phrase "example" in various locations in the specification does not necessarily refer to the same example, nor is it an independent or alternative example that is mutually exclusive with other examples. It is explicitly and implicitly understood by those skilled in the art that the examples described herein may be combined with other examples.

[0043] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0044] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the bridge-type contact and the switch electrical appliance of the present application.

[0045] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0046] In the description of the present application, unless otherwise specified, “plurality” means more than two (including two), and similarly, “plurality groups” means more than two (including two).

[0047] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a barrier, such as a fixed connection through screws, bolts or other barrier; the physical connection may also be a detachable connection, such as a mutual snap-on or snap-fit ​​connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] Based on the above, the present application example provides a bridge-type contact and a switch device.

[0049] In order to enable persons skilled in the art to better understand the present application, the bridge-type contacts and the switch device provided in the example of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0050] Exemplarily, the present application provides a switching device.

[0051] 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.

[0052] The bridge contact can be installed in the housing assembly. A second busbar can be connected in the housing assembly.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Next, the bridge-type contacts mentioned in the drawer-type circuit breaker are explained in detail.

[0059] 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.

[0060] Please refer to Figure 1 and Figure 2The bridge 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, and the second clip group 120 cooperates with the first clip group 110 to form a first clamping opening 130 and a second clamping opening that are arranged opposite to each other. The first clamping opening 130 clamps the first busbar, and the second clamping opening clamps the second busbar 200.

[0061] The first clip set 110 includes a plurality of first connection structures that are spaced apart from each other, and the second clip set 120 includes a plurality of second connection structures that are spaced apart from each other, and the second connection structures correspond to the first connection structures.

[0062] A first end of the elastic member 140 is connected to the first connection structure, a second end of the elastic member 140 is connected to the second connection structure, and the number of the elastic members 140 is less than or equal to the number of the first connection structure.

[0063] The first clip set 110 includes at least one sheet structure. When there are multiple sheet structures, the arrangement direction of the multiple sheet structures is parallel to the arrangement direction of the first clip set 110 and the second clip set 120 .

[0064] The second clip group 120 has a similar structure to the first clip group 110. The second clip group 120 includes at least one sheet structure. In the case where there are multiple sheet structures, the arrangement direction of the multiple sheet structures is parallel to the arrangement direction of the first clip group 110 and the second clip group 120. The number of sheet structures included in the second clip group 120 can be equal to or different from the number of sheet structures included in the first clip group 110. This example of the present application does not impose any specific restrictions on this, as long as the first clip group 110 and the second clip group 120 can cooperate to connect the first busbar and the second busbar 200.

[0065] Compared with the prior art, the arrangement direction of the multiple sheet structures in the clip group is perpendicular to the arrangement direction of the first clip group and the second clip group. In the example of the present application, the arrangement direction of the multiple sheet 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, the contact area between the first clip group 110 and the first busbar in the example of the present application is greater than the contact area between the clip and the first busbar in the prior art, and the contact area between adjacent sheet structures in the example of the present application is greater than the contact area between two adjacent sheet structures in the prior art. Based on the law of resistance, it is known that the contact resistance between different sheet structures is inversely proportional to the contact area. Based on Joule's law, it is known that when the current is constant, the heat generated at the contact point of different sheet structures is inversely proportional to the contact area. Therefore, the temperature rise generated at the contact point between the bridge-type contact 100 provided in the example of the present application and the first busbar is small.

[0066] The first clamping piece group 110 and the second clamping piece group 120 cooperate to form a first clamping opening 130 and a second clamping opening with openings facing each other. The opening sizes of the first clamping opening 130 and the second clamping opening can be adjusted. In this case, the first clamping piece group 110 and the second clamping piece group 120 can be connected by a connecting shaft. The size of the first clamping opening 130 can also be fixed. In this case, the size of the second clamping opening can be adjusted by the elastic deformation of the first clamping piece group 110 and the second clamping piece group 120.

[0067] The first clamp 130 is used to clamp the first busbar. The second clamp is connected to the second busbar 200. The second clamp can be fixedly connected to the second busbar 200 through a connector, and the second clamp can also clamp the second busbar 200 through the clamping force of the second clamp. The example of this application is described only by taking the example that the first clamp 130 clamps the first busbar and the second clamp is fixedly connected to the second busbar 200 through a connector.

[0068] Both the first clip set 110 and the second clip set 120 may be in contact with the first busbar surface.

[0069] The first clip group 110 includes a plurality of first connection structures arranged at intervals. The first connection structure may be provided only on the sheet structure in contact with the first busbar, the first connection structure may be provided only on the sheet structure farthest from the first busbar in the first clip group, or the first connection structure may be provided on all the clip structures included in the first clip group 110. The first connection structure may be a hook structure, a ring structure, a rod structure, a groove 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 the examples of this application are not described here.

[0070] The number of the first connection structures is equal to the number of the second connection structures, and the first connection structures correspond to the second connection structures one by one.

[0071] The elastic member 140 may be a spring, an elastic sheet, etc. 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 may be an odd number or an even number.

[0072] The number of elastic members 140 can be adjusted according to the short-time withstand current value of the drawer type circuit breaker. The short-time withstand current (Icw) refers to the ability of the drawer type circuit breaker to withstand 0.05, 0.1, 0.25, 0.5 or 1s without tripping under certain voltage, short-circuit current and power factor.

[0073] The elastic member 140 can be connected to the first clip group 110 near the first clamp 130, the elastic member 140 can also be connected to the first clip group 110 near the second clamp, the elastic member 140 can also be set at the first clip group 110 near the first clamp 130, and the elastic member 140 can be set at the first clip group 110 near the second clamp.

[0074] For example, the elastic member 140 is only provided at the position of the first clip group 110 close to the first clamping opening 130 as an example for description. When the short-time withstand current value of the drawer-type circuit breaker is less than or equal to 50 kA, the number of the elastic member 140 is zero. When the short-time withstand current value of the drawer-type circuit breaker is greater than 50 kA and less than or equal to 60 kA, the number of the elastic member 140 is 2. When the short-time withstand current value of the drawer-type circuit breaker is greater than 60 kA and less than or equal to 70 kA, the number of the elastic member 140 is 4.

[0075] Based on the above, in the example of the present application, the first clip group 110 and the second clip group 120 can cooperate to form a first clamp 130 and a second clamp arranged opposite to each other, the first clamp 130 clamps the first busbar, and the second clamp clamps the second busbar 200, that is, the connection between the first busbar and the second busbar 200 can be achieved through the matching first clip group 110 and the second clamp group.

[0076] The first clip group 110 is provided with a plurality of first connection structures 1125 at intervals, and the second clip group 120 is provided with a plurality of second connection structures at intervals. The first connection structure 1125 corresponds to the second connection structure. 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 is adjustable. By adjusting the number of the elastic members 140, the elastic members 140 can apply different forces to the first clip group 110 through the first connection structure 1125, and the elastic members 140 can apply different forces to the second clip group 120 through the second connection structure, so that the clamping force at the first clamping opening 130 and the second clamping opening are different, so that the bridge-type contact 100 can be applied to circuit breakers with different short-time tolerance capabilities, and the applicable range of the bridge-type contact 100 can be improved.

[0077] When the elastic member 140 is a spring, a clamping shaft may be installed in the elastic member 140 .

[0078] 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, thereby 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 switch electrical appliance, thereby ensuring the reliability of the use of the switch electrical appliance.

[0079] Based on the bridge contact 100 provided in the above example, Figure 3 For a structural diagram of a first spring provided in this application example, 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 , and a first end of the elastic member 140 is connected to the first connection structure 1125 .

[0080] The second clip set 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, and the second end of the elastic member 140 is connected to the second connection structure.

[0081] The arrangement direction of the first heat dissipation holes 1123 and the second heat dissipation holes 1124 can be perpendicular to the direction in which the first busbar is inserted into the first clamp 130, the arrangement direction of the first heat dissipation holes 1123 and the second heat dissipation holes 1124 can also be parallel to the direction in which the first busbar is inserted into the first clamp 130, and there can be an angle between the arrangement direction of the first heat dissipation holes 1123 and the second heat dissipation holes 1124 and the direction in which the first busbar is inserted into the first clamp 130.

[0082] The first heat dissipation hole 1123 may be a hole structure with a regular shape, such as a circular hole or a rectangular hole, or may be a hole structure with an irregular shape. The shape of the second heat dissipation hole 1124 may 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 may be equal or different, and this application example does not impose any specific restrictions on this, as long as 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.

[0083] 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 shapes of the third heat dissipation hole and the fourth heat dissipation hole are similar to the shape of the first heat dissipation hole 1123. The example of this application is not described in detail here.

[0084] In the example of the present application, the first heat dissipation hole 1123 and the second heat dissipation hole 1124 are arranged at intervals, and the first end of the elastic member 140 can be connected to the portion between the first heat dissipation hole 1123 and the second heat dissipation hole 1124, that is, the first connection structure 1125 is the portion between the first heat dissipation hole 1123 and the second heat dissipation hole 1124. The third heat dissipation hole and the fourth heat dissipation hole are arranged at intervals, and the second end of the elastic member 140 can be connected to the portion between the third heat dissipation hole and the fourth heat dissipation hole, that is, the second connection structure is the portion between the third heat dissipation hole and the fourth heat dissipation hole. 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 a connection structure protruding from the clip group, thereby reducing the manufacturing cost of the bridge-type contact 100.

[0085] 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 increases, causing the air between the first clip group 110 and the first busbar to expand due to heat, thereby causing the gas pressure between the first clip group 110 and the first busbar to be greater than the gas pressure at the position where the first clip group 110 is away from the first busbar. The gas between the first clip group 110 and the first busbar passes through the first heat dissipation hole 1123 and the second heat dissipation hole 1124 to reach the space where the first clip group 110 is away from the first busbar, 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 switch. The role played by the third heat dissipation hole and the fourth heat dissipation hole is similar to that played by the first heat dissipation hole 1123 and the second heat dissipation hole 1124, and the example of this application will not be repeated here.

[0086] Based on the bridge contact 100 provided in the above example, please refer to Figure 2 and Figure 3 , a plurality of the first heat dissipation holes 1123 and the second heat dissipation holes 1124 are arranged at intervals.

[0087] The plurality of first heat dissipation holes 1123 may be randomly distributed in the first clip set 110 , or the plurality of first heat dissipation holes 1123 may be evenly distributed in the first clip set 110 .

[0088] For example, 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 clamp 130, the arrangement direction of the plurality of first heat dissipation holes 1123 may be perpendicular to the direction in which the first busbar is inserted into the first clamp 130, and there may also be an angle between the arrangement direction of the plurality of first heat dissipation holes 1123 and the direction in which the first busbar is inserted into the first clamp 130, and the example of the present application does not impose any specific limitation on this.

[0089] In the example of the present application, the first heat dissipation hole 1123 and the second heat dissipation hole 1124 are both provided with multiple intervals, which means that there can be multiple locations between the first heat dissipation hole 1123 and the second heat dissipation hole 1124, that is, there can be multiple first connecting structures 1125, and there can also be multiple elastic members 140 connected to the first connecting structure 1125. The range of the force applied by the elastic member 140 to the first clip group 110 and the second clip group 120 is larger, so that the bridge-type contact 100 can be applicable to more drawer-type circuit breakers with different short-time tolerance capabilities, thereby expanding the scope of application of the bridge-type contact 100.

[0090] The third heat dissipation hole and the fourth heat dissipation hole are arranged in a similar manner to the first heat dissipation hole 1123 and the second heat dissipation hole 1124, and play similar roles, so the examples of this application are not described in detail here.

[0091] Based on the bridge contact 100 provided in the above example, Figure 4 For a structural diagram of a first clip provided in this application example, please refer to Figure 2 and Figure 4 The contacting portion of the first clip set 110 and the first busbar includes a plurality of first contact portions 1115 disposed at intervals. And / or, the contacting portion of the second clip set 120 and the first busbar includes a plurality of second contact portions disposed at intervals.

[0092] The sheet-like structure in contact with the first busbar in the first clip group 110 may be provided with at least one slot-like structure, or only one slot-like structure may be provided, or two, three, four, etc. The slot-like structure may penetrate the sheet-like structure in contact with the first busbar, or the slot-like structure may not penetrate the sheet-like structure in contact with the first busbar, as long as the slot-like structure can make the parts of the first clip group 110 in contact with the first busbar arranged at intervals, forming a plurality of first contact portions 1115 arranged at intervals.

[0093] Along the arrangement direction of the plurality of first contact portions 1115 , sizes of different first contact portions 1115 may be the same or different.

[0094] The groove-shaped structure may also pass through all the clip structures in the first clip group 110 , and this example of the present application does not impose any specific limitation on this.

[0095] The configuration of the second contact portion is similar to that of the first contact portion 1115 . For the configuration of the second contact portion, please refer to the relevant description of the first contact portion 1115 , and this application example will not be described in detail here.

[0096] The second contact portion and the first contact portion 1115 may be symmetrical, or the second contact portion and the first contact portion 1115 may be staggered.

[0097] The bridge-type contact 100 may only be provided with a portion where the first clip group 110 contacts the first busbar including a plurality of spaced first contact portions 1115, or may only be provided with a portion where the second clip group 120 contacts the first busbar including a plurality of spaced second contact portions, or may simultaneously be provided with a portion where the first clip group 110 contacts the first busbar including a plurality of spaced first contact portions 1115, and a portion where the second clip group 120 contacts the first busbar including a plurality of spaced second contact portions, and the present application example does not impose any specific limitation on this.

[0098] In the example of the present application, by setting the contact portion between the first clip group 110 and the first busbar to include a plurality of first contact portions 1115 arranged at intervals, different first contact portions 1115 can all be in reliable contact with the first busbar, reducing the possibility that the first clip group 110 and the first busbar are in unreliable contact and the effective contact area is small due to the uneven surface of the first busbar, which can improve the reliability of the contact between the first clip group 110 and the first busbar and reduce the temperature rise generated at the contact point between the first clip group 110 and the first busbar. The role played by the plurality of second contact portions arranged at intervals is similar to that played by the plurality of first contact portions 1115 arranged at intervals, and the example of the present application will not be repeated here.

[0099] Based on the bridge contact 100 provided in the above example, please refer to Figure 1 and Figure 2 The first clip set 110 includes a first clip 111 and a first elastic piece 112 connected to each other, and the second clip set 120 includes a second clip and a second elastic piece connected to each other.

[0100] The first clamp 111 cooperates with the second clamp to form a first clamp opening 130 and a second clamp opening. Part of the first elastic sheet 112 abuts against a side of the first clamp 111 away from the second clamp, and part of the second elastic sheet abuts against a side of the second clamp away from the first clamp 111.

[0101] The first clip 111 and the first elastic piece 112 are both sheet-shaped structures in the first clip set 110 mentioned above.

[0102] The first clip 111 cooperates with the second clip to form a first clamping opening 130 and a second clamping opening. The first clamping opening 130 can be used to connect the bridge contact 100 to the first busbar, and the second clamping opening can be used to connect the bridge contact 100 to the second busbar 200.

[0103] The end of the first elastic sheet 112 facing the first clamping opening 130 can abut against the position where the first clamping sheet 111 contacts the first busbar and faces away from the first busbar. The end of the first elastic sheet 112 can also abut against other positions of the first busbar.

[0104] The end of the second elastic sheet facing the first clamping opening 130 can abut against the position where the second clamping sheet contacts the first busbar and faces away from the first busbar. The end of the second elastic sheet can also abut against other positions of the first busbar.

[0105] In the example of the present application, since the first spring clip 112 abuts against the side of the first clip 111 facing away from the second clip, and the first busbar is arranged between the first clip 111 and the second clip, the first spring clip 112 can apply a force toward the first busbar to the first clip 111, thereby making the contact between the first clip 111 and the first busbar closer, reducing the possibility of a higher temperature rise of the bridge contact 100 due to unreliable contact between the first clip 111 and the first busbar, thereby ensuring the reliability of the switch electrical appliance.

[0106] Since the second spring piece abuts against the side of the second clip facing away from the first clip 111, and the first busbar is arranged between the first clip 111 and the second clip, the second spring piece can apply a force toward the first busbar to the second clip, thereby making the contact between the second clip and the first busbar closer, reducing the possibility of a higher temperature rise of the bridge contact 100 due to unreliable contact between the second clip and the first busbar, thereby ensuring the reliability of the switch electrical appliance.

[0107] The first clip 111 is similar in structure to the second clip, and the first spring sheet 112 is similar in structure to the second spring sheet. In the following, the structures of the first clip 111 and the second clip are described exemplarily by taking the first clip 111 as an example, and the structures of the first spring sheet 112 and the second spring sheet are described exemplarily by taking the first spring sheet 112 as an example.

[0108] For example, Figure 5 For a structural diagram of a first clip provided in this application example, 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 .

[0109] An angle may be formed between the connecting section 1112 and the first clamping section 1113. The first clamping section 1113 cooperates with the second clip to be connected to the first busbar.

[0110] The connecting section and the second clamping section can be arranged in a plane, and an angle can be formed between the connecting section 1112 and the second clamping section 1111. The second clamping section 1111 can be connected to the second busbar 200 in cooperation with the second clip.

[0111] Please refer to Figure 1 and Figure 3The first elastic piece 112 includes a contact section 1122 and a fixed section 1121. The fixed section 1121 cooperates with the second busbar 200. At least part of the fixed section 1121 is arranged on the side of the first clamping section 1113 away from the second clamping piece group 120. The contact section 1122 is arranged on the side of the first clamping piece 111 away from the second clamping piece group 120. One end of the contact section 1122 away from the fixed section 1121 abuts against the first clamping section 1113.

[0112] In the example of the present application, the first clamping section 1113 and the second clamping section 1111 are both part of the first clip 111. The first clip 111 can be matched with the first busbar by the cooperation of the first clamping section 1113 and the first busbar. The first clip 111 can be matched with the second busbar 200 by the cooperation of the second clamping section 1111 and the second busbar 200. The fixed section 1121 is part of the first elastic sheet 112. The first elastic sheet 112 can be matched with the second busbar 200 by the cooperation of the fixed section 1121 and the second busbar 200. The end of the abutting section 1122 away from the fixed section 1121 abuts against the first clamping section 1113, and a force toward the first busbar can be applied to the first clamping section 1113, so that the contact between the first clip 111 and the first busbar is more reliable.

[0113] Based on the bridge contact 100 provided in the above example, please refer to Figure 2 The connecting section 1112 cooperates with the first clamping section 1113 to form a first angle. The abutting section 1122 includes a first segment 11221 and a second segment 11222 connected to each other. The second segment 11222 is arranged farther from the fixing section 1121 than the first segment 11221. The first segment 11221 cooperates with the second segment 11222 to form a second angle, which is smaller than the first angle.

[0114] The first angle formed by the connecting section 1112 and the first clamping section 1113 can be an obtuse angle. The second angle formed by the first segment 11221 and the second segment 11222 can also be an obtuse angle, and the angle difference between the second angle and the first angle can be 2°, 4°, etc.

[0115] For example, the value of the second angle may be 116°, the value of the first angle may be 120°, and so on.

[0116] In the example of the present application, the second segment 11222 is arranged farther from the fixed segment 1121 than the first segment 11221, so the end of the second segment 11222 that is away from the first segment 11221 will abut against the first clamping segment 1113. In addition, since the connecting segment 1112 cooperates with the first clamping segment 1113 to form a first angle, and the first segment 11221 cooperates with the first segment 11221 to form a second angle, and the second angle is smaller than the first angle, during the process of the second segment 11222 abutting against the first clamping segment 1113, the second segment 11222 and the first segment 11221 will be elastically deformed, and a force is applied to the second segment 11222 toward the first clamping segment 1113, so that the contact between the first clamping segment 1113 and the first busbar is more reliable, and the possibility of a higher temperature rise of the bridge contact 100 due to poor contact between the first busbar and the first clip 111 is further reduced.

[0117] Based on the bridge contact 100 provided in the above example, please refer to Figure 4 and Figure 5 The first clip 111 further includes a guide section 1114, which is connected to an end of the first clamping section 1113 away from the connecting section 1112, and the guide section 1114 is bent in a direction away from the first busbar.

[0118] Based on this, since the guide section 1114 is connected to the end of the first clamping section 1113 away from the connecting section 1112, the first busbar first contacts the guide section 1114 during the process of inserting the first busbar into the first clamping opening 130. Since the guide section 1114 is bent in a direction away from the first busbar, the size of the first clamping opening 130 gradually decreases along the direction of the first busbar being inserted into the first clamping opening 130. Therefore, during the process of inserting the first busbar 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, which facilitates the insertion of the first busbar into the first clamping opening 130, and can improve the assembly efficiency of the first busbar and the bridge-type contact 100.

[0119] Based on the bridge contact 100 provided in the above example, please refer to Figure 1 The bridge 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 spring sheet 112 and the second busbar 200. The first connecting member 160 is sequentially arranged through the first position of the first spring sheet 112, part of the mounting bracket 150, the second busbar 200 and the second clip group 120. The second connecting member 170 is sequentially arranged through the second position of the first spring sheet 112, the first clip 111, the second busbar 200 and the second clip group 120. The first position of the first spring sheet 112 is spaced from the second position of the first spring sheet 112. In the direction from the first spring sheet 112 to the second busbar 200, the thickness of the mounting bracket 150 is less than the thickness of the first clip 111.

[0120] One end of the mounting bracket 150 can be connected to the housing assembly of the switch electrical appliance, and the other end of the mounting bracket 150 can be located between the first spring piece 112 and the second busbar 200 , based on which the bridge contact 100 can be connected to the housing assembly.

[0121] The first connecting member 160 and the second connecting member 170 may be the same or different. For example, the first connecting member 160 may be a threaded member such as a bolt, or the first connecting member 160 may be a riveted member. This application example is described only by taking the first connecting member 160 as a riveted member as an example.

[0122] Compared with the first connecting member 160 and the second connecting member 170 being configured as threaded members, the first connecting member 160 and the second connecting member 170 are configured as riveted members, which can ensure the connection reliability between the first spring piece 112, the second busbar 200 and the mounting bracket 150.

[0123] In the example of the present application, along the direction from the first spring sheet 112 to the second busbar 200, the thickness of the mounting bracket 150 is less than the thickness of the first clip 111, and part of the mounting bracket 150 is connected between the first spring sheet 112 and the second busbar 200, and part of the first clip 111 is located between the first spring sheet 112 and the second busbar 200. Therefore, in the process that the first connecting member 160 sequentially connects the first position of the first spring sheet 112, 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 spring sheet 112, the first clip 111 and the second busbar 200, there is a gap between the first spring sheet 112 and the mounting bracket 150 between the first position of the first spring sheet 112 and the second position of the first spring sheet 112, and the gap can provide a deformation space for the deformation of the first spring sheet 112 between the first position and the second position, thereby ensuring the connection reliability between the first spring sheet 112, the second busbar 200 and the mounting bracket 150.

[0124] Based on the bridge contact 100 provided in the above example, please refer to Figure 1 and Figure 4 A plurality of first protrusions 1116 are provided at intervals at the contacting portion of the first clip set 110 and the first busbar. And / or a plurality of second protrusions are provided at intervals at the contacting portion of the second clip set 120 and the first busbar.

[0125] The first protrusions 1116 may be protrusions such as protrusions, ridges, etc., and a plurality of first protrusions 1116 may be randomly distributed to the first contact portion of the first clip group 110, or evenly distributed to the first contact portion of the first clip group 110. Along the direction in which the first busbar is inserted into the first clamping opening 130, a plurality of first protrusions 1116 may be staggered.

[0126] The bridge-type contact 100 may be provided with a first protrusion 1116 at the position where the first clip group 110 contacts the first busbar, or may be provided with a second protrusion only at the position where the second clip group 120 contacts the first busbar, or may be provided with a first protrusion 1116 at the position where the first clip group 110 contacts the first busbar and a second protrusion at the position where the second clip group 120 contacts the first busbar.

[0127] In the example of the present application, by providing the first protrusion 1116 at the position where the first clip group 110 contacts the first busbar, the first protrusion 1116 can rub against the first busbar during the process of inserting the first busbar into the first clamping opening 130, 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 point between the first clip group 110 and the first busbar. The second protrusion plays a similar role to the first protrusion 1116, and the example of the present application will not be repeated here.

[0128] Finally, it should be noted that the above embodiments are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on 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, wherein a first end of the elastic member is connected to the first connection structure, a 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.

2. The bridge contact according to claim 1, characterized in that: 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 a 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.

3. The bridge contact according to claim 2, characterized in that: A plurality of the first heat dissipation holes and a plurality of the second heat dissipation holes are arranged at intervals.

4. 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.

5. The bridge 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.

6. The bridge contact according to claim 5, 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.

7. The bridge contact according to claim 6, characterized in that: 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.

8. The bridge contact according to claim 5, characterized in that: Also includes: A mounting bracket, part of which is connected between the first elastic sheet and the second busbar; A first connecting member is sequentially arranged through a first position of the first elastic piece, a part of the mounting bracket, the second busbar and the second clip group; The second connecting member is sequentially inserted into the second position of the first spring sheet, the first clamp and the second busbar. The first position of the first spring sheet is spaced apart from the second position of the first spring sheet. Along the direction of the first spring sheet toward the second busbar, the thickness of the mounting bracket is less than the thickness of the first clamp.

9. The bridge contact according to claim 1, characterized in that: A plurality of first protrusions are arranged at intervals at the portion where the first clip group contacts the first busbar; and / or, A plurality of second protrusions are arranged at intervals at the portion where the second clip group contacts the first busbar.

10. A switch electrical device, characterized in that: It comprises a housing assembly and the bridge-type contact according to any one of claims 1 to 9.

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