A conductive chuck for a drawer seat and a multi-chuck assembly structure

Abstract

The application relates to the technical field of electrical connection devices, in particular to a conductive chuck of a drawer seat and a multi-chuck combined structure. The conductive chuck comprises a first conductive assembly, a second conductive assembly and a fixing assembly. The first conductive assembly and the second conductive assembly are respectively composed of a first wiring row fixedly connected with a first clamping structure and a second wiring row fixedly connected with a second clamping structure. The first wiring row comprises a plurality of first conductive foils arranged in a stack, and the second wiring row comprises a plurality of second conductive foils arranged in a stack. The first conductive assembly and the second conductive assembly are arranged at intervals in a first direction through the fixing assembly, so that a wiring space is formed between the first wiring row and the second wiring row, and a breaker body busbar insertion space is formed between the first clamping structure and the second clamping structure. Based on the conductive chuck and the multi-chuck combined structure, the contact resistance can be effectively reduced, the temperature rise during the working of the conductive chuck is reduced, and the user can conveniently wire.

Description

Technical Field

[0001] This application relates to the field of electrical connection device technology, and in particular to a conductive clamp and multi-clamp combination structure for a drawer base. Background Technology

[0002] With the development of the new energy field, the requirements for temperature rise of low-voltage circuit breakers are becoming more and more stringent. The temperature rise performance needs to be 10~20K lower than the qualified value specified in the national standard GB / T 14048.1.

[0003] A drawer-type circuit breaker is a type of low-voltage circuit breaker, consisting of a circuit breaker body and a drawer base. The drawer base is equipped with conductive clamps, each with two clamping openings. The conductive clamps can clamp and electrically connect to the two integral block-shaped busbars of the drawer-type circuit breaker through one of the clamping openings. When the circuit breaker body is slid into the drawer base from one side, the conductive clamps can clamp and electrically connect to the main busbar of the circuit breaker body through the other clamping opening. The user terminal block is connected between the two integral block-shaped busbars.

[0004] The conductive clamps on the drawer base have a significant impact on the overall temperature rise of the drawer-type circuit breaker. To reduce the temperature rise of the drawer-type circuit breaker and facilitate user wiring, the structure of the conductive clamps on the drawer base needs to be optimized. Utility Model Content

[0005] This application provides a conductive clamp and a multi-clamp combination structure for a drawer base. By changing the structure of the conductive clamp, not only can the contact resistance at the conductive clamp be reduced, but it also facilitates wiring by the user.

[0006] The technical solution of this application is as follows: In a first aspect, this application provides a conductive chuck for a drawer seat, the conductive chuck including a first conductive component, a second conductive component, and a fixing component.

[0007] The first conductive component includes a first terminal block and a first clamping structure that are fixedly connected. The first terminal block includes a plurality of first conductive foils stacked together. The first clamping structure is fixedly connected to one end of the plurality of first conductive foils stacked together.

[0008] The second conductive component includes a second terminal block and a second clamping structure. The second terminal block includes multiple stacked second conductive foils, and the second clamping structure is fixedly connected to one end of the multiple stacked second conductive foils.

[0009] Along the first direction, the first conductive component and the second conductive component are spaced apart by a fixed component, forming a wiring space between the first terminal block and the second terminal block, and forming a circuit breaker body insertion space between the first clamping structure and the second clamping structure.

[0010] Based on the conductive chuck provided in the first aspect, the first terminal block is fixedly connected to the first clamping structure, and the second terminal block is fixedly connected to the second clamping structure. In this way, the first terminal block and the first clamping structure, and the second terminal block and the second clamping structure can maintain stable and low contact resistance, which helps to reduce the temperature rise at the conductive chuck.

[0011] Furthermore, in this application, the first terminal block includes multiple stacked first conductive foils; the second terminal block includes multiple stacked second conductive foils. Thus, compared with the traditional integral block structure of the terminal block, the first terminal block and the second terminal block have better flexibility. When a user terminal block is connected between the first terminal block and the second terminal block, the first terminal block and the second terminal block can deform to a certain extent under the action of external force, which facilitates the connection of the user terminal block.

[0012] In one possible design, the fixing component includes a first support and a second support. Along a second direction, the first and second supports are arranged side-by-side between the first and second conductive components to define the distance between them. The second direction is perpendicular to the first direction.

[0013] The portion of the first support that contacts the first conductive component is located at the end of the first clamping structure near the first terminal block, and the portion of the first support that contacts the second conductive component is located at the end of the second clamping structure near the second terminal block.

[0014] The portion of the second support that contacts the first conductive component is located at one end of the first terminal block near the first clamping structure, and the portion of the second support that contacts the second conductive component is located at one end of the second terminal block near the second clamping structure.

[0015] Based on the conductive clamp provided in this embodiment, the first conductive component and the second conductive component typically maintain a fixed distance under the support of the first support and the second support. This helps to maintain a constant clamping force applied to the main busbar, thereby facilitating the maintenance of stable contact resistance. Furthermore, in this embodiment, the portion of the second support that contacts the first conductive component is located at one end of the first terminal block near the first clamping structure, and the portion of the second support that contacts the second conductive component is located at one end of the second terminal block near the second clamping structure.

[0016] In this way, the first support is positioned at the root of the first and second clamping structures, and the second support is positioned at the root of the first and second terminal blocks. When the main body busbar is inserted between the first and second clamping structures, it exerts a force on them, causing them to open. The reaction force of this force acts precisely at the root of the first and second clamping structures. The first support provides support at this location, effectively resisting this opening force. Similarly, when wiring is connected between the first and second terminal blocks, the second support also provides effective support at the root of the first and second terminal blocks. This enhances the structural rigidity of the entire conductive chuck, preventing plastic deformation or fatigue damage under stress and extending product life.

[0017] In one possible design, the fixing component includes a fixing bracket. The fixing bracket includes a first side plate and a second side plate, which are symmetrically arranged on opposite sides of the first conductive component and the second conductive component along a third direction, for limiting the first conductive component and the second conductive component in the third direction.

[0018] The fixed bracket is also provided with a first set of mounting holes and a second set of mounting holes, which are arranged side by side along the second direction.

[0019] Along the third direction, the first set of mounting holes includes two opposing first mounting holes, one disposed on the first side plate and the other disposed on the second side plate, and the two ends of the first support body are respectively engaged with one of the first mounting holes.

[0020] Along the third direction, the second set of mounting holes includes two opposing second mounting holes, one located on the first side plate and the other on the second side plate. Each end of the second support body is engaged with one of the second mounting holes. The third direction is perpendicular to both the first and second directions.

[0021] Based on the conductive clamp provided in this embodiment, the first side plate and the second side plate are symmetrically arranged on opposite sides of the first conductive component and the second conductive component, and are used to limit the first conductive component and the second conductive component in a third direction. On this basis, the first support body and the second support body are mounted by means of the first side plate and the second side plate. In this way, the first support body, the second support body, the first side plate, and the second side plate can form an integral structure, which is beneficial for maintaining the relative position and clamping state between the first conductive component and the second conductive component, thereby ensuring the reliability and stability of the electrical connection.

[0022] In one possible design, the mounting bracket further includes a motherboard; the motherboard has a through hole, through which a first conductive component and a second conductive component pass in a second direction; and in a third direction, a first side plate and a second side plate are disposed on opposite sides of the motherboard and are opposite side walls of the through hole.

[0023] The fixing bracket also includes a first elastic preload member and a second elastic preload member connected to the motherboard. Along a first direction, the first and second elastic preload members are located on opposite sides of the through hole. The first elastic preload member is disposed on the side of the first clamping structure away from the second clamping structure, and is used to provide a preload force to the first clamping structure toward the second clamping structure. The second elastic preload member is disposed on the side of the second clamping structure away from the first clamping structure, and is used to provide a preload force to the second clamping structure toward the first clamping structure.

[0024] Based on the conductive clamp provided in this embodiment, since the first and second elastic preload members have a certain degree of elasticity, they can provide a relatively gentle counterforce to the first and second clamping structures, allowing the main busbar to be inserted into the drawer seat more smoothly and avoiding jamming. When the circuit breaker main busbar is inserted into the conductive clamp, the first and second elastic preload members provide continuous preload to the first and second clamping structures, maintaining good contact between the conductive clamp and the main busbar.

[0025] Furthermore, in this embodiment, the first elastic pretensioner, the second elastic pretensioner, the first side plate, and the second side plate can form an integral structure, which facilitates installation.

[0026] In one possible design, along a third direction, the first clamping structure includes a plurality of first clamping pieces arranged side by side, and the second clamping structure includes a plurality of second clamping pieces that correspond one-to-one with the first clamping pieces.

[0027] The first elastic pretensioning member includes a first pretensioning finger that corresponds to and abuts against a plurality of first clamping pieces, and the second elastic pretensioning member includes a second pretensioning finger that corresponds to and abuts against a plurality of second clamping pieces.

[0028] Based on the conductive chuck provided by this embodiment, each first clamping piece and second clamping piece can independently bear local contact pressure under the action of the corresponding first pre-tightening finger and second pre-tightening finger. Compared with the integral clamping block and integral pre-tightening finger, this structure helps to improve the contact reliability between the conductive chuck and the main body busbar, thereby helping to reduce contact resistance.

[0029] In one possible design, the fixing bracket also includes a first set of limiting holes and a second set of limiting holes.

[0030] Along a first direction, a first set of limiting holes is located on the side of the first terminal block away from the second terminal block, and a second set of limiting holes is located on the side of the second terminal block away from the first terminal block. Along a third direction, one of the limiting holes in the first set is located on the first side plate, and the other is located on the second side plate. Similarly, one of the limiting holes in the second set is located on the first side plate, and the other is located on the second side plate.

[0031] The fixing assembly also includes a first limiting rod and a second limiting rod. The first limiting rod is installed through a first set of limiting holes and, together with the first support and the second support, limits the position of the first conductive component in a first direction. The second limiting rod is installed through a second set of limiting holes and, together with the first support and the second support, limits the position of the second conductive component in a first direction.

[0032] Based on the conductive clamp provided by this embodiment, the positions of the first conductive component and the second conductive component in the first direction are limited by the combined action of the first set of limiting holes, the second set of limiting holes, the first limiting rod, the second limiting rod, the first support body, and the second support body. It has the characteristics of simple structure and convenient installation.

[0033] In one possible design, the mounting bracket is a single, integrated structure. This facilitates the fabrication of the mounting bracket and the assembly of the conductive clamp.

[0034] In one possible design, the first support body is plate-shaped, and its two ends in the first direction are bent toward the second direction to form a first support end and a second support end, respectively. The support surfaces of the first support end and the second support end are parallel to the plane defined by the second and third directions, and the first support body is arc-shaped at the bend.

[0035] Based on the conductive chuck provided in this embodiment, the first support body can be manufactured using efficient and low-cost methods such as stamping and sheet metal forming, thus exhibiting low cost. Furthermore, the support surfaces of the first and second support ends are parallel to the plane defined by the second and third directions. This allows the first support body to have a large contact surface with the first and second clamping structures in the first direction, enabling them to maintain a stable distance without external forces. In addition, the first support body has an arc-shaped bend, allowing the first and second clamping structures to rotate slightly away from each other, guided by the shape of the bend in the first support body, when the circuit breaker body is inserted, facilitating smooth insertion of the circuit breaker body into the conductive chuck.

[0036] In one possible design, the first clamping structure has a first mounting groove on the side near the first support body that is adapted to the first support end, and the first mounting groove has a first rounded corner that is adapted to the arc shape of the bend of the first support body.

[0037] The second clamping structure has a second mounting groove on the side near the first support body that is adapted to the second support end, and the second mounting groove has a second rounded corner that is adapted to the arc shape of the other bend of the first support body.

[0038] Based on the conductive chuck provided by this embodiment, the first support can not only limit the spacing between the first conductive component and the second conductive component in the first direction, but also limit the position of the first conductive component and the second conductive component in the second direction, which is beneficial to the simplification of the overall structure of the conductive chuck and also facilitates assembly.

[0039] Secondly, this application also provides a multi-clamp assembly structure, which includes a common connection bar and multiple conductive clamps, wherein the common connection bar includes a first main body bar and a second main body bar.

[0040] The conductive clamp is any of the aforementioned conductive clamps. The first terminal blocks of the multiple conductive clamps are arranged side-by-side at one end of the first main body row and are integrally formed with the first main body row. The second terminal blocks of the multiple conductive clamps are arranged side-by-side at one end of the second main body row and are integrally formed with the second main body row.

[0041] The beneficial effects of the multi-clamp combination structure provided in the second aspect and the various possible designs of the second aspect can be found in the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0042] Figure 1 A schematic diagram of a conductive clamp provided for related technologies.

[0043] Figure 2 This is a schematic diagram of the structure of a conductive clamp for a drawer seat provided in an embodiment of this application.

[0044] Figure 3 for Figure 2 Exploded view.

[0045] Figure 4 This is a schematic diagram of the structure of the conductive clamp, drawer base, and user terminal block provided in the embodiments of this application.

[0046] Figure 5 This is a structural schematic diagram of a fixed bracket provided in an embodiment of this application.

[0047] Figure 6 This is a schematic diagram of a first clamping structure provided in an embodiment of this application.

[0048] Figure 7 This is a schematic diagram illustrating the connection between the conductive clamp and the base of the drawer seat, as provided in an embodiment of this application.

[0049] Figure 8 This application provides a multi-clamp assembly structure for implementing the present invention.

[0050] The reference numerals in the related art are as follows: 1', Conductive clamp; 11', First conductive component; 12', Second conductive component; 13', Fixing component; 2', Body busbar; 3', Wiring busbar; The reference numerals in this application are: 1. Conductive chuck; 11. First conductive component; 111. First terminal block; 112. First clamping structure; 1121. First clamping piece; 1122. First mounting groove; 1123. First rounded corner; 12. Second conductive component; 121. Second terminal block; 122. Second clamping structure; 1221. Second clamping piece; 1222. Second mounting groove; 1223. Second rounded corner; 13. Fixing components; 131. First support body; 1311. First support end; 1312. Second support end; 132. Second support structure; 133. Fixed bracket; 1330. Main board; 1331. First side plate; 1332. Second side plate; 1333. First set of mounting holes; 1334. Second set of mounting holes; 1335. First elastic preload; 13351. First preload finger; 1336. Second elastic preload; 13361. Second preload finger; 1337. First set of limiting holes; 1338. Second set of limiting holes; 1339. Connecting hole; 134. First limiting rod; 135. Second limiting rod; 4. User terminal block; 5. Drawer base; 51. Base; 52. Mounting cavity; 6. Right-angled mounting plate; 7. Multi-clamp combination structure; 71. First main row; 72. Second main row; Q1, wiring space; Q2, circuit breaker body insertion space; D1, First Direction; D2, Second Direction; D3, Third Direction. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and drawings of this application are intended to cover non-exclusive inclusion.

[0053] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0054] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0055] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0056] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by spacers, screws, bolts, or other spacers. A physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] The following section provides a detailed description of this application, starting with the background technology.

[0058] A drawer-type circuit breaker includes a circuit breaker body and a drawer base. The circuit breaker body includes a body busbar. The drawer base is equipped with conductive clamps.

[0059] Figure 1 This is a schematic diagram of a conductive clamp provided for related technologies. Please refer to it. Figure 1 In related technologies, the conductive clamp 1' includes a first conductive component 11', a second conductive component 12', and a fixing component 13'. The first conductive component 11' and the second conductive component 12' are arranged opposite to each other through the fixing component 13', and two clamping ports are formed at both ends. The conductive clamp 1' can clamp and electrically connect the main body busbar 2' of the circuit breaker body through one clamping port, and clamp and electrically connect two wiring busbars 3' through the other clamping port. Both wiring busbars 3' are integral block structures, and the space between the two wiring busbars 3' is used to connect user wiring terminals.

[0060] Thus, when the circuit breaker body is slammed into the drawer, the body busbar 2' and the wiring busbar 3' are electrically connected through the conductive clamp 1', thereby connecting the circuit breaker body to the external circuit. When the circuit breaker body is slammed out of the drawer, the body busbar 2' separates from the conductive clamp 1', and the circuit breaker body is disconnected from the external circuit.

[0061] To further reduce the contact resistance at the conductive clamp, decrease the temperature rise at the conductive clamp, and facilitate wiring by the user, this application provides a conductive clamp for a drawer base. Figure 2 This is a schematic diagram of the structure of a conductive clamp for a drawer seat provided in an embodiment of this application. Figure 3 for Figure 2 Exploded view.

[0062] Please refer to Figure 2 and Figure 3 The conductive clamp 1 of the drawer seat provided in this application includes a first conductive component 11, a second conductive component 12, and a fixing component 13. The first conductive component 11 includes a first terminal block 111 and a first clamping structure 112. The first terminal block 111 includes a plurality of stacked first conductive foils. The first clamping structure 112 is fixedly connected to one end of the plurality of stacked first conductive foils. The second conductive component 12 includes a second terminal block 121 and a second clamping structure 122. The second terminal block 121 includes a plurality of stacked second conductive foils. The second clamping structure 122 is fixedly connected to one end of the plurality of stacked second conductive foils.

[0063] Along the first direction D1, the first conductive component 11 and the second conductive component 12 are spaced apart by the fixing component 13, forming a wiring space Q1 between the first terminal block 111 and the second terminal block 121, and forming a circuit breaker body insertion space Q2 between the first clamping structure 112 and the second clamping structure 122.

[0064] Figure 4 This is a schematic diagram illustrating the structure of the conductive clamp, drawer base, and user terminal block combined according to an embodiment of this application. Please refer to... Figure 4 In use, the conductive clamp 1 of this application is installed on a drawer seat 5, wherein at least a portion of the first terminal block 111 and the second terminal block 121 are exposed outside the drawer seat 5, and at least a portion of the first clamping structure 112 and the second clamping structure 122 are located inside the drawer seat 5. When the circuit breaker body is inserted into the drawer seat 5, the body busbar of the circuit breaker body is inserted between the first clamping structure 112 and the second clamping structure 122, thereby realizing the electrical connection between the circuit breaker body and the conductive clamp 1. The user terminal block 4 is inserted into the wiring space Q1 between the first terminal block 111 and the second terminal block 121 and is fixed by screws, thereby realizing the electrical connection between the user terminal block 4 and the conductive clamp 1.

[0065] Please combine Figure 1 , Figure 2 and Figure 4 Compared with the conductive clamp 1´ provided in the related technology, the first terminal block 111 and the second terminal block 121 in this application are equivalent to the two terminal busbars 3´ in the related technology. The difference is that in this application, the first terminal block 111 in the first conductive component 11 is fixedly connected to the first clamping structure 112, and the second terminal block 121 in the second conductive component 12 is fixedly connected to the second clamping structure 122. This connection ensures that the first terminal block 111 and the first clamping structure 112, and the second terminal block 121 and the second clamping structure 122 have stable contact interfaces, thereby ensuring that the first terminal block 111 and the first clamping structure 112, and the second terminal block 121 and the second clamping structure 122 have stable and low contact resistance, respectively.

[0066] On the contrary Figure 1 The related technology shown here, wherein the first conductive component 11' is equivalent to the first clamping structure 112 in this application, and the second conductive component 12' is equivalent to the second clamping structure 122 in this application. The first conductive component 11' and the second conductive component 12' are electrically connected to the two wiring busbars 3' by clamping. The contact between the first conductive component 11', the second conductive component 12' and the wiring busbars 3' is greatly affected by the clamping force. During long-term use, the clamping force of the fixing component 13' may decrease due to stress relaxation, wear or corrosion, which may lead to poor contact and increased contact resistance, ultimately affecting the temperature rise performance.

[0067] Compared with related technologies, the conductive chuck 1 provided in this application has a first terminal block 111 fixedly connected to a first clamping structure 112, and a second terminal block 121 fixedly connected to a second clamping structure 122. In this way, the first terminal block 111 and the first clamping structure 112, and the second terminal block 121 and the second clamping structure 122 can maintain stable and low contact resistance, which is beneficial to reducing the temperature rise at the conductive chuck 1.

[0068] Furthermore, in this application, the first terminal block 111 includes multiple stacked first conductive foils; the second terminal block 121 includes multiple stacked second conductive foils. Thus, compared with the traditional integral block structure, the first terminal block 111 and the second terminal block 121 have better flexibility. When a user terminal block 4 is connected between the first terminal block 111 and the second terminal block 121, the first terminal block 111 and the second terminal block 121 can deform to a certain extent under the action of external force, which facilitates the connection of the user terminal block 4.

[0069] The multiple stacked first conductive foils in the first terminal block 111 can be interconnected by polymer diffusion bonding or by pressing. Similarly, the multiple stacked second conductive foils in the second terminal block 121 can be interconnected by polymer diffusion bonding or by pressing. The materials of the first and second conductive foils can be pure copper, aluminum, or copper alloys.

[0070] It should be noted that there are various ways to fix the first terminal block 111 to the first clamping structure 112 and the second terminal block 121 to the second clamping structure 122 in this application. For example, it can be welding, riveting, threaded connection, integral structure, etc.

[0071] It should also be noted that in this application, the first clamping structure 112 and the second clamping structure 122 can be an integral structure or a combination structure of multiple clamping pieces.

[0072] It should also be noted that in this application, the first conductive component 11 and the second conductive component 12 are spaced apart by a fixing component 13, wherein the fixing component 13 can at least allow the first clamping structure 112 and the second clamping structure 122 to rotate slightly away from each other when the main body busbar is inserted into the main body insertion space, so as to facilitate the insertion of the main body busbar.

[0073] It should also be noted that the fixing component 13 can adopt a variety of structures, such as a combination of tension spring and threaded fastener, bolt fixing or other equivalent mechanical structures.

[0074] Please continue to refer to this. Figure 2 and Figure 3 In one embodiment of this application, the fixing component 13 includes a first support 131 and a second support 132.

[0075] Along the second direction D2, the first support 131 and the second support 132 are arranged side by side between the first conductive component 11 and the second conductive component 12 to define the distance between the first conductive component 11 and the second conductive component 12. The second direction D2 is perpendicular to the first direction D1.

[0076] In this way, the first conductive component 11 and the second conductive component 12 can maintain a fixed distance under the support of the first support 131 and the second support 132. This helps to keep the clamping force applied to the main body busbar constant, thereby facilitating the maintenance of stable contact resistance. Please continue to refer to this. Figure 3 Specifically, the part of the first support 131 that contacts the first conductive component 11 is located at one end of the first clamping structure 112 near the first terminal block 111, and the part of the first support 131 that contacts the second conductive component 12 is located at one end of the second clamping structure 122 near the second terminal block 121.

[0077] The portion of the second support 132 that contacts the first conductive component 11 is located at one end of the first terminal block 111 near the first clamping structure 112, and the portion of the second support 132 that contacts the second conductive component 12 is located at one end of the second terminal block 121 near the second clamping structure 122.

[0078] In this way, the first support 131 is positioned at the root of the first clamping structure 112 and the second clamping structure 122, and the second support 132 is positioned at the root of the first terminal block 111 and the second terminal block 121. When the main body busbar is inserted between the first clamping structure 112 and the second clamping structure 122, the main body busbar exerts a force on the first clamping structure 112 and the second clamping structure 122, causing them to open. The reaction force of this force acts precisely at the root of the first clamping structure 112 and the second clamping structure 122. The first support 131 provides support precisely at this location, thereby effectively resisting this opening force. Similarly, when wiring is connected between the first terminal block 111 and the second terminal block 121, the second support 132 can also provide effective support at the root of the first terminal block 111 and the second terminal block 121. In this way, the structural rigidity of the entire conductive chuck 1 is enhanced, preventing plastic deformation or fatigue damage under stress and extending the product life.

[0079] Figure 5 This is a schematic diagram of a fixed bracket provided in an embodiment of this application. Please continue to refer to it. Figure 2 , Figure 3 and Figure 5 In one embodiment of this application, the fixing component 13 includes a fixing bracket 133.

[0080] The fixed bracket 133 includes a first side plate 1331 and a second side plate 1332. Along the third direction D3, the first side plate 1331 and the second side plate 1332 are symmetrically arranged on opposite sides of the first conductive component 11 and the second conductive component 12, and are used to limit the first conductive component 11 and the second conductive component 12 in the third direction D3.

[0081] The fixed bracket 133 is also provided with a first set of mounting holes 1333 and a second set of mounting holes 1334. Along the second direction D2, the first set of mounting holes 1333 and the second set of mounting holes 1334 are arranged side-by-side. Along the third direction D3, the first set of mounting holes 1333 includes two opposing first mounting holes, one located on the first side plate 1331 and the other on the second side plate 1332. Both ends of the first support body 131 are respectively engaged with one of the first mounting holes. Along the third direction D3, the second set of mounting holes 1334 includes two opposing second mounting holes, one located on the first side plate 1331 and the other on the second side plate 1332. Both ends of the second support body 132 are respectively engaged with one of the second mounting holes. The third direction D3 is perpendicular to the first direction D1 and the second direction D2.

[0082] Based on the conductive clamp 1 provided in this embodiment, the first side plate 1331 and the second side plate 1332 are symmetrically arranged on opposite sides of the first conductive component 11 and the second conductive component 12, and are used to limit the first conductive component 11 and the second conductive component 12 in a third direction D3. On this basis, the first support body 131 and the second support body 132 are installed by means of the first side plate 1331 and the second side plate 1332. In this way, the first support body 131, the second support body 132, the first side plate 1331 and the second side plate 1332 can form an integral structure, which is beneficial to maintaining the relative position and clamping state between the first conductive component 11 and the second conductive component 12, thereby ensuring the reliability and stability of the electrical connection.

[0083] Please continue to refer to this. Figure 5 In one embodiment of this application, the fixing bracket 133 further includes a main board 1330; the main board 1330 is provided with a through hole, and along the second direction D2, the first conductive component 11 and the second conductive component 12 pass through the through hole; along the third direction D3, the first side plate 1331 and the second side plate 1332 are disposed on opposite sides of the main board 1330 and are opposite side walls of the through hole.

[0084] The fixing bracket 133 also includes a first elastic preload member 1335 and a second elastic preload member 1336 connected to the main board 1330. Along the first direction D1, the first elastic preload member 1335 and the second elastic preload member 1336 are located on opposite sides of the through hole, with the first elastic preload member 1335 located on the side of the first clamping structure 112 away from the second clamping structure 122, for providing a preload force toward the second clamping structure 122 to the first clamping structure 112. The second elastic preload member 1336 is disposed on the side of the second clamping structure 122 away from the first clamping structure 112, for providing a preload force toward the first clamping structure 112 to the second clamping structure 122.

[0085] Specifically, when inserting the circuit breaker body busbar between the first clamping structure 112 and the second clamping structure 122, it is necessary to spread the first clamping structure 112 and the second clamping structure 122 apart. At this time, since the first elastic preload member 1335 and the second elastic preload member 1336 have a certain elasticity, they can provide a relatively gentle counterforce to the first clamping structure 112 and the second clamping structure 122, so that the body busbar can be inserted into the drawer seat more smoothly and avoid jamming.

[0086] When the circuit breaker body busbar is inserted into the conductive clamp 1, the first elastic pre-tightening member 1335 and the second elastic pre-tightening member 1336 provide continuous pre-tightening force for the first clamping structure 112 and the second clamping structure 122, maintaining good contact between the conductive clamp 1 and the body busbar.

[0087] Furthermore, in this embodiment, the fixing bracket 133 connects the first side plate 1331, the second side plate 1332, the first elastic pretensioner 1335 and the second elastic pretensioner 1336 into one unit through the main board 1332, which facilitates the assembly of the conductive clamp and simplifies the composition structure of the conductive clamp.

[0088] It should be noted that the pre-tightening between the first clamping structure 112 and the second clamping structure 122 is not limited to the structure provided in this embodiment. For example, the pre-tightening between the first clamping structure 112 and the second clamping structure 122 can also be achieved by a tension spring.

[0089] In this embodiment, the fixed bracket 133 includes a first elastic pretensioner 1335 and a second elastic pretensioner 1336. The first elastic pretensioner 1335 and the second elastic pretensioner 1336 are respectively connected to the first side plate 1331 and the second side plate 1332. In this way, the first elastic pretensioner 1335, the second elastic pretensioner 1336, the first side plate 1331 and the second side plate 1332 can form an integral structure, which is convenient for installation.

[0090] Figure 6This is a schematic diagram of a first clamping structure provided in an embodiment of this application. Please continue to refer to it. Figure 2 , Figure 3 and Figure 6 In one embodiment of this application, along the third direction D3, the first clamping structure 112 includes a plurality of first clamping pieces 1121 arranged side by side, and the second clamping structure 122 includes a plurality of second clamping pieces 1221 corresponding one-to-one with the first clamping pieces 1121.

[0091] The first elastic pretensioner 1335 includes a first pretension finger 13351 that corresponds to and abuts against a plurality of first clamping pieces 1121, and the second elastic pretensioner 1336 includes a second pretension finger 13361 that corresponds to and abuts against a plurality of second clamping pieces 1221.

[0092] In this way, each of the first clamping pieces 1121 and the second clamping pieces 1221 can independently bear the local contact pressure under the action of the corresponding first pre-tightening finger 13351 and the second pre-tightening finger 13361. Compared with the integral clamping block and the integral pre-tightening finger, this structure helps to improve the contact reliability between the conductive chuck 1 and the main body busbar, thereby helping to reduce the contact resistance.

[0093] Furthermore, in this embodiment, the surface area of ​​the first clamping structure 112 is equal to the sum of the surface areas of the plurality of first clamping pieces 1121, and the surface area of ​​the second clamping structure 122 is equal to the sum of the surface areas of the plurality of second clamping pieces 1221. Thus, due to the skin effect, the first clamping structure 112 and the second clamping structure 122 have good current-carrying capacity. Finally, the large surface area of ​​the first clamping structure 112 and the second clamping structure 122 also facilitates heat dissipation.

[0094] It should be noted that, in Figure 2 , Figure 3 and Figure 6 In the structure shown, the extension direction of the longest side of the first clamping piece 1121 and the second clamping piece 1221 is defined as the length direction, which is parallel to the second direction D2. The extension direction of the second longest side of the first clamping piece 1121 and the second clamping piece 1221 is defined as the width direction, which is parallel to the first direction D1. The extension direction of the shortest side of the first clamping piece 1121 and the second clamping piece 1221 is defined as the thickness direction, which is parallel to the third direction D3. Therefore, in... Figures 2 to 4 In the structure shown, the plurality of first clamping pieces 1121 and the plurality of second clamping pieces 1221 are arranged along their thickness direction.

[0095] Therefore, in some other embodiments of this application, the plurality of first clamping pieces 1121 and the plurality of second clamping pieces 1221 may also be arranged along their width direction, and this application does not impose any restrictions on this.

[0096] Please combine Figure 2 , Figure 3 and Figure 5 In one embodiment of this application, the fixing bracket 133 further includes a first set of limiting holes 1337 and a second set of limiting holes 1338. Along the first direction D1, the first set of limiting holes 1337 is located on the side of the first terminal block 111 away from the second terminal block 121, and the second set of limiting holes 1338 is located on the side of the second terminal block 121 away from the first terminal block 111.

[0097] Along the third direction D3, one of the first set of limiting holes 1337 is provided in the first side plate 1331, and the other is provided in the second side plate 1332. One of the second set of limiting holes 1338 is provided in the first side plate 1331, and the other is provided in the second side plate 1332.

[0098] The fixing assembly 13 also includes a first limiting rod 134 and a second limiting rod 135. The first limiting rod 134 is installed through a first set of limiting holes 1337, and works in conjunction with the first support body 131 and the second support body 132 to limit the position of the first conductive assembly 11 in the first direction D1. The second limiting rod 135 is installed through a second set of limiting holes 1338, and works in conjunction with the first support body 131 and the second support body 132 to limit the position of the second conductive assembly 12 in the first direction D1.

[0099] Specifically, in related technologies, there are many structures that can define the positions of the first conductive component 11 and the second conductive component 12 in the first direction D1. For example, threaded fasteners can be used.

[0100] This embodiment uses the combined action of the first set of limiting holes 1337, the second set of limiting holes 1338, the first limiting rod 134, the second limiting rod 135, the first support body 131, and the second support body 132 to define the positions of the first conductive component 11 and the second conductive component 12 in the first direction D1. Thus, during assembly of the conductive clamp 1, the first conductive component 11 and the second conductive component 12 can be placed between the first side plate 1331 and the second side plate 1332. Then, the first support body 131 and the second support body 132 are inserted into the first side plate 1331 and the second side plate 1332. Finally, the first limiting rod 134 and the second limiting rod 135 are inserted, completing the installation of the conductive clamp 1. As can be seen from the installation process of the conductive clamp 1, the conductive clamp 1 provided by this embodiment has the characteristics of simple structure and convenient assembly.

[0101] Please continue to refer to this. Figure 2 , Figure 3 and Figure 5In one embodiment of this application, the fixing bracket 133 is an integral structure. This facilitates the fabrication of the fixing bracket 133 and also facilitates the assembly of the conductive clamp 1.

[0102] It should be noted that the mounting bracket 133 can be made of metal, such as stainless steel or copper alloy. However, the mounting bracket 133 is not magnetic to avoid generating eddy currents.

[0103] Please combine Figure 2 and Figure 3 In one embodiment of this application, the first support body 131 is plate-shaped, and the first support body 131 is bent at both ends in the first direction D1 toward the second direction D2 to form a first support end 1311 and a second support end 1312, respectively. The support surface of the first support end 1311 and the support surface of the second support end 1312 are both parallel to the plane defined by the second direction D2 and the third direction D3, and the first support body 131 is arc-shaped at the bend.

[0104] Specifically, in this embodiment, the first support body 131 is plate-shaped, and its two ends are bent toward the second direction D2 along the first direction D1 to form the first support end 1311 and the second support end 1312, respectively. The first support body 131 with this structure can be produced in a high-efficiency and low-cost manner such as stamping and sheet metal, and has the characteristics of low cost.

[0105] Furthermore, in this embodiment, the support surfaces of the first support end 1311 and the second support end 1312 are parallel to the plane defined by the second direction D2 and the third direction D3. Thus, in the first direction D1, the first support body 131 has a large contact surface with the first clamping structure 112 and the second clamping structure 122, thereby enabling the first clamping structure 112 and the second clamping structure 122 to maintain a stable distance without external force.

[0106] Finally, in this embodiment, the first support 131 is arc-shaped at the bend, so that when the circuit breaker body is inserted, the first clamping structure 112 and the second clamping structure 122 can rotate slightly in opposite directions based on the shape of the bend of the first support 131, so that the circuit breaker body can be smoothly inserted into the conductive clamp 1.

[0107] Please continue to refer to this. Figure 2 , Figure 3 and Figure 6 In one embodiment of this application, the first clamping structure 112 is provided with a first mounting groove 1122 adapted to the first support end 1311 on the side near the first support body 131, and the first mounting groove 1122 has a first rounded corner 1123, which is adapted to the arc shape of the bend of the first support body 131.

[0108] The second clamping structure 122 is provided with a second mounting groove 1222 on the side near the first support body 131 that is adapted to the second support end 1312, and the second mounting groove 1222 has a second rounded corner 1223 that is adapted to the arc shape of the other bend of the first support body 131.

[0109] Thus, in this embodiment, the first support 131 can not only limit the distance between the first conductive component 11 and the second conductive component 12 in the first direction D1, but also limit the position of the first conductive component 11 and the second conductive component 12 in the second direction D2, which is beneficial to the simplification of the overall structure of the conductive clamp 1 and also facilitates assembly.

[0110] Please continue to refer to this. Figure 2 and Figure 3 In some embodiments of this application, the second support 132 and the first support 131 may have the same shape, which facilitates manufacturing and assembly. In other embodiments of this application, the second support 132 and the first support 131 may also have different structures.

[0111] Figure 7 This is a schematic diagram illustrating the connection between the conductive clamp and the base of the drawer seat according to an embodiment of this application. Please refer to the diagram. Figure 4 and Figure 7 In some embodiments of this application, the drawer base 5 includes a base 51 and a mounting cavity 52 connected together. The base 51 is used to mount the conductive clamp 1, and the mounting cavity 52 is used to accommodate the circuit breaker body. When the conductive clamp 1 is installed, the main parts of the fixing bracket 133, the first clamping structure 112 and the second clamping structure 122 are located inside the base 51 (the inside is the side of the base 51 closest to the mounting cavity 52), while the main parts of the first terminal block 111 and the second terminal block 121 are exposed outside the base 51.

[0112] Please refer to Figure 5 To facilitate the installation of the conductive chuck 1, the main board 1330 of the fixing bracket 133 is also provided with multiple connection holes 1339, which are located near both ends of the main board 1330 along the first direction D1. When the conductive chuck 1 is installed, it can be fixedly connected to the base 51 on the inside of the base 51 through the multiple connection holes 1339 on the main board 1330.

[0113] In addition, please continue to refer to Figure 2 , Figure 3 , Figure 4 and Figure 7In some embodiments of this application, the portions of the first terminal block 111 and the second terminal block 121 exposed outside the base 51 may also be provided with right-angled mounting plates 6. When the conductive clamp 1 is installed, the conductive clamp 1 and the base 51 can be fixedly connected by the right-angled mounting plates 6 outside the base 51.

[0114] In this way, when the conductive clamp 1 is installed, it is not only fixedly connected to the base 51 on the inside of the base 51 through the fixing bracket 133, but also fixedly connected to the base 51 on the outside of the base 51 through the right-angle mounting plate 6. This helps to improve the installation reliability of the conductive clamp 1.

[0115] It should be noted that, Figure 7 The conductive clamp 1 shown outside the base 51 is a conductive clamp with a right-angled mounting plate 6 installed. In the actual installation process, the right-angled mounting plate 6 is not fixed to the conductive clamp 1 first and then to the base 51. Instead, after the conductive clamp 1 mates with the mounting holes at the base 51, the right-angled mounting plate 6 is then fixed to the portions of the first terminal block 111 and the second terminal block 121 that are exposed outside the base 51.

[0116] Figure 8 For an embodiment of this application, please refer to the multi-clamp assembly structure. Figure 8 In some scenarios, the busbar of the circuit breaker body is large in size, which requires a large conductive clamp to match it.

[0117] Based on this, please combine Figure 2 and Figure 8 This application also provides a multi-clamp assembly structure 7, which includes a common connection bar and multiple conductive clamps 1. The common connection bar includes a first main body bar 71 and a second main body bar 72. The conductive clamps are any of the conductive clamps 1 provided in this application. The first terminal block 111 of the multiple conductive clamps 1 is arranged side by side at one end of the first main body bar 71 and is integral with the first main body bar 71. The second terminal block 121 of the multiple conductive clamps 1 is arranged side by side at one end of the second main body bar 72 and is integral with the second main body bar 72.

[0118] Thus, when the multi-clamp assembly structure 7 includes multiple conductive clamps 1, multiple conductive clamps 1 can be plugged into a circuit breaker body busbar, thereby meeting the installation requirements of large-size circuit breaker body busbars.

[0119] Furthermore, each conductive clamp 1 in the multi-clamp assembly structure 7 can be standardized, for example, by using a fixed bracket 133 of uniform specifications, and a first conductive component 11 and a second conductive component 12 of uniform specifications.

[0120] Therefore, the multi-clamp combination structure 7 provided by this embodiment can be said to be a disassembly of the conductive clamp with large size requirements, which is disassembled into multiple standardized small-sized conductive clamps 1, and then combined with the common connection row to form an integral structure. This facilitates production and processing and helps to save costs.

[0121] Please continue to refer to this. Figure 2 and Figure 8 The multi-clamp assembly structure 7 can be provided with a right-angled mounting plate on the side where the first terminal block 111 and the second terminal block 121 are far apart from each other, or on the side where the first main body block 71 and the second main body block 72 are far apart from each other, and is fixedly connected to the drawer seat through the right-angled mounting plate.

[0122] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0123] The above-described embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A conductive clamp for a drawer seat, characterized in that, It includes a first conductive component, a second conductive component, and a fixing component; The first conductive component includes a first terminal block and a first clamping structure. The first terminal block includes a plurality of stacked first conductive foils. The first clamping structure is fixedly connected to one end of the plurality of stacked first conductive foils. The second conductive component includes a second terminal block and a second clamping structure. The second terminal block includes a plurality of stacked second conductive foils, and the second clamping structure is fixedly connected to one end of the plurality of stacked second conductive foils. Along the first direction, the first conductive component and the second conductive component are spaced apart by the fixing component, forming a wiring space between the first terminal block and the second terminal block, and forming a circuit breaker body insertion space between the first clamping structure and the second clamping structure.

2. The conductive clamp of the drawer seat according to claim 1, characterized in that, The fixing component includes a first support body and a second support body; Along the second direction, the first support and the second support are arranged side by side between the first conductive component and the second conductive component to define the distance between the first conductive component and the second conductive component; the second direction is perpendicular to the first direction. Wherein, the part of the first support body that contacts the first conductive component is located at the end of the first clamping structure near the first terminal block, and the part of the first support body that contacts the second conductive component is located at the end of the second clamping structure near the second terminal block; The portion of the second support that contacts the first conductive component is located at one end of the first terminal block near the first clamping structure, and the portion of the second support that contacts the second conductive component is located at one end of the second terminal block near the second clamping structure.

3. The conductive clamp of the drawer seat according to claim 2, characterized in that, The fixing component includes a fixing bracket; The fixed bracket includes a first side plate and a second side plate. Along a third direction, the first side plate and the second side plate are symmetrically arranged on opposite sides of the first conductive component and the second conductive component, and are used to limit the first conductive component and the second conductive component in a third direction. The fixed bracket is also provided with a first set of mounting holes and a second set of mounting holes, and along the second direction, the first set of mounting holes and the second set of mounting holes are arranged side by side. Along a third direction, the first set of mounting holes includes two opposing first mounting holes, one disposed on the first side plate and the other disposed on the second side plate, and the two ends of the first support body are respectively engaged with one of the first mounting holes; Along the third direction, the second set of mounting holes includes two opposing second mounting holes, one disposed on the first side plate and the other disposed on the second side plate, and the two ends of the second support body are respectively engaged with one of the second mounting holes; The third direction is perpendicular to the first direction and the second direction.

4. The conductive clamp of the drawer seat according to claim 3, characterized in that, The fixing bracket also includes a motherboard; the motherboard is provided with a through hole, and along the second direction, the first conductive component and the second conductive component pass through the through hole; along the third direction, the first side plate and the second side plate are disposed on opposite sides of the motherboard and are opposite side walls of the through hole; The fixing bracket further includes a first elastic preload member and a second elastic preload member connected to the motherboard. Along the first direction, the first elastic preload member and the second elastic preload member are located on opposite sides of the through hole. The first elastic preload member is disposed on the side of the first clamping structure away from the second clamping structure, and is used to provide a preload force to the first clamping structure toward the second clamping structure. The second elastic preload member is disposed on the side of the second clamping structure away from the first clamping structure, and is used to provide a preload force to the second clamping structure toward the first clamping structure.

5. The conductive clamp of the drawer seat according to claim 4, characterized in that, Along a third direction, the first clamping structure includes a plurality of first clamping pieces arranged side by side, and the second clamping structure includes a plurality of second clamping pieces that correspond one-to-one with the first clamping pieces; The first elastic pretensioner includes a first pretensioning finger that corresponds to and abuts against a plurality of first clamping pieces, and the second elastic pretensioner includes a second pretensioning finger that corresponds to and abuts against a plurality of second clamping pieces.

6. The conductive clamp of the drawer seat according to claim 3, 4, or 5, characterized in that, The fixed bracket also includes a first set of limiting holes and a second set of limiting holes; Along the first direction, the first set of limiting holes is located on the side of the first terminal block away from the second terminal block, and the second set of limiting holes is located on the side of the second terminal block away from the first terminal block; along the third direction, one of the first set of limiting holes is disposed on the first side plate, and the other is disposed on the second side plate; one of the second set of limiting holes is disposed on the first side plate, and the other is disposed on the second side plate; The fixing component further includes a first limiting rod and a second limiting rod. The first limiting rod is installed through the first set of limiting holes and works with the first support and the second support to limit the position of the first conductive component in the first direction. The second limiting rod is installed through the second set of limiting holes and works with the first support and the second support to limit the position of the second conductive component in the first direction.

7. The conductive clamp of the drawer seat according to claim 6, characterized in that, The fixed bracket is an integral structure.

8. The conductive clamp of the drawer seat according to any one of claims 3 to 5, characterized in that, The first support is plate-shaped, and its two ends in the first direction are bent toward the second direction to form a first support end and a second support end, respectively. The support surfaces of the first support end and the second support end are parallel to the plane determined by the second direction and the third direction, and the first support is arc-shaped at the bend.

9. The conductive clamp of the drawer seat according to claim 8, characterized in that, The first clamping structure is provided with a first mounting groove on the side near the first support body that is adapted to the first support end, and the first mounting groove has a first rounded corner, which is adapted to the arc shape of the bend of the first support body. The second clamping structure has a second mounting groove on the side near the first support body that is adapted to the second support end, and the second mounting groove has a second rounded corner that is adapted to the arc shape of another bend of the first support body.

10. A multi-clamp assembly structure, characterized in that, It includes a common connection bar and multiple conductive clamps, wherein the common connection bar includes a first main body bar and a second main body bar; The conductive chuck is the conductive chuck according to any one of claims 1 to 9; The first terminal blocks of the plurality of conductive clamps are arranged side by side at one end of the first main body block and are integral with the first main body block; The second terminal blocks of the multiple conductive clamps are arranged side by side at one end of the second main body block and are integral with the second main body block.

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