Wiring terminal, magnetic system, thermal system and circuit breaker
By designing the wiring terminals of the clamp combination structure, the problem of unreliable connection between the wiring terminals and conductive wires is solved, and higher connection reliability and efficiency are achieved.
Patent Information
- Application Number
- CN202422407010.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The connection between the existing terminals and the conductive wires is unreliable, which affects the connection reliability of the conductive wires and the circuit breaker.
A wiring terminal is designed, including a first clamp, a second clamp and a third clamp. The second clamp and the first clamp are spaced to form a first socket, and the third clamp and the second clamp are spaced to form a second socket in communication. The conductive wire is inserted from the two sockets and is clamped by the clamp combination. A plurality of sub-plates and guide surfaces are arranged between the clamps to improve connection reliability.
It improves the connection reliability between the terminals and conductive wires, enhances the connection stability between the conductive wires and circuit breakers, and improves wiring efficiency.
Smart Images
Figure CN223218491U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of power distribution equipment, and in particular to a wiring terminal, a magnetic system, a thermal system, and a circuit breaker. Background Art
[0002] Terminal blocks are used to achieve electrical connections between conductive wires and between conductive wires and electrical equipment. They are widely used in various electrical equipment and power systems, such as power systems, communication systems, automation control systems, vehicles, and electrical appliances.
[0003] Taking a circuit breaker as an example, the electrical appliance may be a terminal block that electrically connects the conductive wire to the conductive structure within the circuit breaker.
[0004] Based on the structure of the existing wiring terminals, the connection between the conductive wire and the wiring terminals may be unreliable, which in turn affects the reliability of the connection between the conductive wire and the circuit breaker. Utility Model Content
[0005] The present application provides a wiring terminal, a magnetic system, a thermal system and a circuit breaker. The wiring terminal provided by the example of the present application can ensure the connection reliability between the wiring terminal and the conductive part, and further ensure the connection reliability between the conductive wire and the circuit breaker.
[0006] In a first aspect, the present application provides a terminal block comprising a first clamp, a second clamp, and a third clamp. The first clamp is connected to a conductive structure. A portion of the second clamp is spaced apart from the first clamp, and the second clamp cooperates with the first clamp to form a first socket. The third clamp is spaced apart from the second clamp, and the third clamp is provided on the side of the first clamp facing the second clamp, and the third clamp cooperates with the first clamp to form a second socket, the second socket being connected to the first socket, and a conductive wire can extend into the terminal block from the first and second sockets, and the first, second, and third clamps cooperate to clamp the conductive wire.
[0007] In this example, the second and third clamping plates are spaced apart, a first socket is formed between the second clamping plate and the first clamping plate, a second socket is formed between the third clamping plate and the second clamping plate, and the second socket is connected to the first socket. A conductive wire can be inserted between the first, second, and third clamping plates through the first and second sockets, thereby enabling the first and second clamping plates to cooperate with each other and the first and third clamping plates to clamp the conductive wire.
[0008] Because the second clamping plate is spaced apart from the third clamping plate, the position where the second clamping plate cooperates with the first clamping plate to clamp the conductive wire is spaced apart from the position where the third clamping plate cooperates with the first clamping plate to clamp the conductive wire. As a result, the second clamping plate and the third clamping plate can cooperate with the first clamping plate to clamp the conductive wire at different positions, thereby improving the connection reliability between the terminal block and the conductive wire, and improving the connection reliability between the conductive wire and the circuit breaker.
[0009] In addition, compared with the prior art, in which the connection between the terminal block and the conductive wire is achieved by adjusting the adjustment screw, in the example of the present application, the connection between the terminal block and the conductive wire can be achieved by simply inserting the conductive wire from the first socket and the second socket between the first clamp, the second clamp and the third clamp, which increases the wiring efficiency.
[0010] In some possible implementations, the second clamping plate includes a plurality of first split plates spaced apart along the direction in which the conductive wire is inserted into the first socket, and / or the third clamping plate includes a plurality of second split plates spaced apart along the direction in which the conductive wire is inserted into the second socket.
[0011] Compared with the second clamping plate which is a plate-like structure, in the example of the present application, along the direction in which the conductive wire is inserted into the first socket, the second clamping plate is provided to include a plurality of first sub-plates arranged at intervals, so that each first sub-plate can cooperate with the first clamping plate to clamp the conductive wire, thereby improving the reliability of the first clamping plate and the second clamping plate in cooperating to clamp the conductive wire.
[0012] When the surface of the first clamping plate or the second clamping plate is uneven, by providing the second clamping plate with multiple first sub-plates arranged at intervals, the effective contact area between the first sub-plates and the conductive wire can be increased, further improving the reliability of the first clamping plate and the second clamping plate in clamping the conductive wire.
[0013] In some possible implementations, when the second clamping plate includes a plurality of first split boards spaced apart, the plurality of first split boards are evenly arranged along the direction in which the conductive wire is inserted into the first socket. When the third clamping plate includes a plurality of second split boards spaced apart, the plurality of second split boards are evenly arranged along the direction in which the conductive wire is inserted into the second socket.
[0014] In the example of the present application, by evenly arranging multiple first sub-plates along the direction in which the conductive wire is inserted into the first socket, the forces exerted on the conductive wire by the multiple first sub-plates can be made substantially the same, thereby reducing the possibility of different temperature rises occurring at the contact points between the conductive wire and different first sub-plates.
[0015] The second sub-board plays a similar role to the first sub-board. For details about the role of the second sub-board, please refer to the description of the first sub-board. This application example will not be described in detail here.
[0016] In some possible implementations, a first guide surface is provided on the side of the second clamp facing the first socket, and the first guide surface is inclined in a direction that matches the direction in which the conductive wire is inserted into the first socket. Alternatively, a second guide surface is provided on the side of the third clamp facing the second socket, and the second guide surface is inclined in a direction that matches the direction in which the conductive wire is inserted into the second socket.
[0017] By providing the first guide surface, the distance between the first clamping plate and the second clamping plate can be gradually reduced as the conductive wire is inserted into the first socket. That is, during insertion of the conductive wire into the terminal, the conductive wire can first extend into the larger end between the first and second clamping plates, facilitating the mating of the conductive wire and the terminal, and improving assembly efficiency of the terminal and conductive wire.
[0018] The structure of the second guide surface is similar to that of the first guide surface, and the functions they play are similar, so this application example will not be described in detail here.
[0019] In some possible implementations, the terminal block further includes a limiting protrusion, which is provided on the side of the first clamp facing the second clamp, and the limiting protrusion is provided on the end of the first clamp away from the first socket, and the limiting protrusion can limit the relative position of the conductive wire and the first clamp.
[0020] Because the limiting protrusion is located on the side of the first clamping plate facing the second clamping plate, and the limiting protrusion is located on the end of the first clamping plate facing away from the first socket, the conductive wire can extend to a position abutting the limiting protrusion during insertion of the conductive wire from the first socket into the terminal block. Therefore, the limiting protrusion can limit the relative position of the conductive wire and the first clamping plate, reducing the possibility of the conductive wire passing through the terminal block and extending into the interior of the circuit breaker, thereby damaging other internal structures of the circuit breaker.
[0021] In some possible implementations, a first anti-slip structure is provided on a side of the first clamping plate facing the second clamping plate, and the first anti-slip structure contacts the conductive wire. And / or a second anti-slip structure is provided on a side of the second clamping plate facing the first clamping plate, and the second anti-slip structure contacts the conductive wire.
[0022] Since the first anti-slip structure is provided on the side of the first clamping plate facing the second clamping plate, when the conductive wire is inserted into the first clamping plate and the second clamping plate bracket, the first anti-slip structure can contact the conductive wire, thereby increasing the friction between the first clamping plate and the conductive wire, reducing the possibility of the conductive wire detaching from between the first clamping plate and the second clamping plate, and further ensuring the connection reliability of the conductive wire and the terminal.
[0023] The role played by the second anti-slip structure is similar to that played by the first anti-slip structure, and this application example will not elaborate on this.
[0024] In some possible implementations, the terminal block further includes a connecting plate connected to an end of the first clamping plate facing away from the first socket, and an end of the connecting plate away from the first clamping plate is electrically connected to the conductive structure.
[0025] Since one end of the connecting plate is connected to the first clamping plate and the other end of the connecting plate is connected to the conductive structure, the electrical connection between the terminal block and the conductive structure can be achieved by providing the connecting plate.
[0026] In a second aspect, the present application provides a magnetic protection system, comprising a coil assembly, a mounting bracket, and a terminal block disclosed in any possible implementation of the first aspect. The coil assembly is mounted on the mounting bracket, and the terminal block is electrically connected to the coil assembly.
[0027] The beneficial effects of the connection terminals provided in the second aspect and the various possible designs of the second aspect can be referred to the beneficial effects brought about by the first aspect and the various possible implementation methods of the first aspect, and will not be repeated here.
[0028] In a third aspect, the present application provides a thermal protection system, comprising a bimetallic strip, a thermal element, and a terminal block disclosed in any possible implementation of the first aspect. A portion of the bimetallic strip is fixedly connected to the thermal element, and the terminal block is electrically connected to the bimetallic strip.
[0029] The beneficial effects of the connection terminals provided in the third aspect and the various possible designs of the third aspect can be referred to the beneficial effects brought about by the first aspect and the various possible implementation methods of the first aspect, and will not be repeated here.
[0030] In a fourth aspect, the present application provides a circuit breaker, comprising a housing and the magnetic protection system provided in the second aspect above, the magnetic protection system being mounted in the housing, the connection terminal in the magnetic protection system being a first connection terminal, the side wall of the housing being provided with a first connection port, the first connection port being compatible with the first connection terminal. And / or, the circuit breaker comprises a housing and the thermal protection system provided in the third aspect above, the thermal protection system being mounted in the housing, the connection terminal in the thermal protection system being a second connection terminal, the side wall of the housing being provided with a second connection port, the second connection port being compatible with the second connection terminal.
[0031] The beneficial effects of the connection terminals provided in the fourth aspect and the various possible designs of the fourth aspect can be referred to the beneficial effects brought about by the first aspect and the various possible implementation methods of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 A schematic diagram of the internal structure of a circuit breaker provided as an example in this application.
[0033] Figure 2 A schematic structural diagram of a shell provided as an example in this application.
[0034] Figure 3 A schematic structural diagram of a magnetic protection system provided as an example in this application.
[0035] Figure 4 A schematic diagram of the structure of a thermal protection system provided as an example in this application.
[0036] Figure 5 A schematic diagram of the structure of a terminal block provided as an example in this application.
[0037] Figure 6 This is a schematic diagram of the structure of another terminal block provided as an example in this application.
[0038] Figure 7 This is a schematic diagram of the structure of another terminal block provided as an example in this application.
[0039] Description of reference numerals:
[0040] 100. Circuit breaker; 110. Housing; 111. First wiring port; 112. First mounting slot; 113. First limiting slot; 114. Second wiring port; 115. Second mounting slot; 116. Second limiting slot; 120. Magnetic protection system; 121. First wiring terminal; 122. Coil assembly; 123. Mounting bracket; 130. Thermal protection system; 131. Second wiring terminal; 132. Bimetallic strip; 133. Thermal element; 200. Wiring terminal; 210. First clamping plate; 220. Second clamping plate; 221. First sub-plate; 230. First socket; 240. Third clamping plate; 241. Second sub-plate; 250. Second socket; 260. Limiting protrusion; 270. Connecting plate. DETAILED DESCRIPTION
[0041] To make the purpose, technical solutions, and advantages of the examples of this application more clear, the technical solutions in the examples of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the examples described are only 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 making any creative efforts are within the scope of protection of this application.
[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein in the specification of the application 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.
[0043] References to "examples" herein mean that a particular feature, structure, or characteristic described in connection with the examples may be included in at least one example of the present application. The appearance of the phrase "example" in various places in the specification does not necessarily refer to the same example, nor does it constitute an independent or alternative example that is mutually exclusive of other examples. It is understood, both explicitly and implicitly, by those skilled in the art that the examples described herein may be combined with other examples.
[0044] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists, A and B exist, and B exists. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.
[0045] The directional words appearing in the following description refer to the directions shown in the drawings and do not limit the specific structures of the terminal blocks, magnetic system, thermal system and circuit breaker of the present application.
[0046] In addition, the terms "first", "second", etc. in the description 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 such features.
[0047] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).
[0048] In the description of this 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 connection or snap connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0049] Based on the above, the present application provides an example of a terminal block, a magnetic system, a thermal system, and a circuit breaker.
[0050] In order to enable people skilled in the art to better understand the present application, the wiring terminals, magnetic system, thermal system and circuit breaker provided in the example of the present application will be clearly and completely described below in conjunction with the accompanying drawings.
[0051] Illustratively, the present application provides a circuit breaker. Figure 1 A schematic diagram of the internal structure of a circuit breaker provided as an example in this application, Figure 2 This is a schematic diagram of the structure of a shell provided as an example of this application. Figure 1 and Figure 2 The circuit breaker 100 may include a housing 110 , a magnetic protection system 120 , and a thermal protection system 130 . The magnetic protection system 120 and the thermal protection system 130 may both be mounted on the housing 110 .
[0052] Regarding the structures of the magnetic protection system 120 and the thermal protection system 130 , please refer to the relevant description below for details. The example of this application is only briefly described here.
[0053] The magnetic protection system 120 may include a first connection terminal. The first connection terminal may have the same structure as the connection terminal mentioned below in the examples of this application, or may have the same structure as a connection terminal in the prior art.
[0054] The thermal protection system 130 may include a second terminal. The second terminal may have the same structure as the terminal described below in the examples of this application, or may have the same structure as a terminal in the prior art.
[0055] At least one of the first terminal and the second terminal may be the same as the terminal described below in the example of this application, and this example of this application does not impose any specific limitation on this.
[0056] The housing 110 may be provided with a first wiring port 111 and a second wiring port 114. The specifications and shape of the first wiring port 111 match those of the first wiring terminal. The specifications and shape of the second wiring port 114 match those of the second wiring terminal.
[0057] The first terminal can be connected to a first conductive wire, and the second terminal can be connected to a second conductive wire. For example, current can flow through the first conductive wire, then through the thermal protection system 130, other conductive structures within the circuit breaker 100, and the magnetic protection system 120, and ultimately out of the circuit breaker 100 through the second conductive wire. The direction of current flow within the circuit breaker 100 can be determined by the wiring method of the circuit breaker 100 in the circuit system, and this example application does not specifically limit this.
[0058] Based on the circuit breaker 100 provided in the above example, please refer to Figure 1 and Figure 2 The inner wall of the housing 110 may be provided with a first mounting groove 112 , which is connected to the first wiring port 111 . Part of the first wiring terminal can extend into the first mounting groove 112 .
[0059] The first mounting groove 112 may be a groove provided on the inner wall of the housing 110 . The first mounting groove 112 may also be formed by cooperation of two spaced-apart protrusions provided on the inner wall of the housing 110 .
[0060] Since the first mounting groove 112 is provided on the inner wall of the shell 110, the first terminal can be matched with the shell 110 through the cooperation of the first mounting groove 112 and the first terminal, thereby reducing the amplitude of shaking of the first terminal in the shell 110 and ensuring the reliability of the cooperation between the first terminal and the shell 110.
[0061] The inner wall of the housing 110 may be provided with a second mounting groove 115 , which is in communication with the second wiring port 114 . Part of the second wiring terminal can extend into the second mounting groove 115 .
[0062] The structure of the second mounting groove 115 is similar to that of the first mounting groove 112 , and the function played by the second mounting groove 115 is the same as that played by the first mounting groove 112 , and this application example will not be described in detail here.
[0063] Based on the circuit breaker 100 provided in the above example, please refer to Figure 1 and Figure 2 The inner wall of the shell 110 may further be provided with a first limiting groove 113 and a second limiting groove 116 .
[0064] The first limiting groove 113 and the first installation groove 112 can be spaced apart. Part of the first connecting terminal can be snapped into the first limiting groove 113.
[0065] The first installation groove 112 can be matched with the first position of the first connecting terminal, and the first limiting groove 113 can be matched with the second position of the first connecting terminal. The first position and the second position are spaced apart.
[0066] Based on this, on the basis of the first installation groove 112 cooperating with the first terminal, by setting the first limiting groove 113 to cooperate with the first terminal, and the first limiting groove 113 and the first installation groove 112 are set at intervals, the first limiting groove 113 and the first installation groove 112 can limit the first terminal from different positions of the first terminal, further reducing the amplitude of the shaking of the first terminal relative to the shell 110, and ensuring the assembly reliability of the first terminal and the shell 110.
[0067] The relationship between the second limiting groove 116 and the second installation groove 115 is similar to the positional relationship between the first limiting groove 113 and the first installation groove 112. The role played by the second limiting groove 116 is similar to that played by the first limiting groove 113, and this application example will not be described in detail.
[0068] Next, the structure of the magnetic protection system is described in detail.
[0069] For example, Figure 3 For a structural diagram of a magnetic protection system provided as an example in this application, please refer to Figure 3 The present application provides a magnetic protection system 120. The magnetic protection system 120 may include a coil assembly 122, a mounting bracket 123, and a terminal block 200. The coil assembly 122 is mounted on the mounting bracket 123, and the terminal block 200 is electrically connected to the coil assembly 122.
[0070] The specific structure of the coil assembly 122 can be the same as that of the coil assembly in the prior art. For example, the coil assembly 122 can include a coil and a coil skeleton, as well as other structures that cooperate with the coil skeleton.
[0071] The connection terminal 200 included in the magnetic protection system 120 can be a first connection terminal 121. The coil can be mounted on a coil frame. One end of the coil is connected to the first connection terminal 121, and the other end of the coil is connected to the mounting bracket 123.
[0072] The coil can be connected to the first terminal 121 and the mounting bracket 123 by welding or other connection methods. This application example does not specifically limit the connection method between the coil and the first terminal 121 and the mounting bracket 123, as long as the normal use of the magnetic protection system 120 is guaranteed.
[0073] Regarding the specific structure of the first terminal 121, please refer to the relevant description below, and this application example will not be described in detail here.
[0074] When a short circuit or severe overload occurs in the circuit connected to the circuit breaker 100, the magnetic protection system 120 can be activated to drive the contact mechanism in the circuit breaker 100 to operate, so that the circuit breaker 100 is in an open state, thereby reducing the possibility of further expansion of the short circuit or severe overload in the circuit.
[0075] For example, Figure 4 For a schematic diagram of the thermal protection system provided in this application example, please refer to Figure 4 The present application provides a thermal protection system 130. The thermal protection system 130 may include a bimetallic strip 132, a thermal element 133, and a terminal 200. A portion of the bimetallic strip 132 is fixedly connected to the thermal element 133, and the terminal 200 is electrically connected to the bimetallic strip 132.
[0076] The connection terminal 200 in the thermal protection system 130 may be the second connection terminal 131. The second connection terminal 131 has a similar structure to the first connection terminal 121. For details on the specific structures of the first connection terminal 121 and the second connection terminal 131, please refer to the relevant description below.
[0077] The second terminal 131 can be connected to the bimetallic strip 132 through a flexible connection structure, or the second terminal 131 can be connected to the bimetallic strip 132 through a copper busbar or other conductive parts. The example of this application does not limit the specific connection method between the second terminal 131 and the bimetallic strip 132.
[0078] The connection method between the bimetallic strip 132 and the thermal element 133 is similar to the connection method between the bimetallic strip 132 and the thermal element 133 in the prior art, and will not be described in detail in this application.
[0079] When an overload condition occurs in the circuit connected to the circuit breaker 100, the thermal element 133 generates heat. Since the thermal element 133 is connected to the bimetallic strip 132, the heat generated by the thermal element 133 can be transferred to the bimetallic strip 132, thereby causing the bimetallic strip 132 to deform, driving other internal components of the circuit breaker 100 to operate, placing the circuit breaker 100 in an open state. This reduces the possibility of further expansion of the overload condition in the circuit breaker 100 and ensures the reliability of the circuit breaker 100.
[0080] Since the first wiring terminal 121 and the second wiring terminal 131 have similar structures, the first wiring terminal 121 and the second wiring terminal 131 may be structural components formed after the wiring terminal 200 is adaptively adjusted in different usage scenarios.
[0081] Next, taking the connection terminal 200 as an example, the structures of the first connection terminal 121 and the second connection terminal 131 are described.
[0082] For example, this application provides a wiring terminal. The wiring terminal can be used in power systems, communication systems, automated control systems, vehicles, and electrical appliances, where electrical connections between conductive wires or between conductive wires and conductive structures are required. This application does not specifically limit the use of the wiring terminal 200. This application describes the wiring terminal as being applicable to a circuit breaker.
[0083] Figure 5 For a schematic diagram of the structure of a terminal block provided for this application example, please refer to Figure 5The terminal block 200 may include a first clamping plate 210, a second clamping plate 220, and a third clamping plate 240. The first clamping plate 210 is connected to the conductive structure. A portion of the second clamping plate 220 is spaced apart from the first clamping plate 210, and the second clamping plate 220 cooperates with the first clamping plate 210 to form a first socket 230. The third clamping plate 240 is spaced apart from the second clamping plate 220, and the third clamping plate 240 is located on the side of the first clamping plate 210 facing the second clamping plate 220. The third clamping plate 240 cooperates with the first clamping plate 210 to form a second socket 250. The second socket 250 is connected to the first socket 230, and the conductive wire can extend into the terminal block 200 from the first socket 230 and the second socket 250. The first clamping plate 210, the second clamping plate 220, and the third clamping plate 240 cooperate to clamp the conductive wire.
[0084] The first clamping plate 210 may be a substantially plate-shaped structure. The first clamping plate 210 may be directly connected to the conductive structure, or the first clamping plate 210 may be connected to the conductive structure via a copper bus, a flexible connection structure, or other conductive members.
[0085] The conductive structure may be the coil assembly 122 in the magnetic protection system 120, or the bimetallic strip 132 in the thermal protection system 130. When the terminal block 200 is suitable for different scenarios, the conductive structure may be different. This application example does not limit the specific implementation of the conductive structure.
[0086] The second and third clamping plates 220 and 240 can be spaced apart on one side of the first clamping plate 210. Along the arrangement of the second and third clamping plates 220 and 240, the spacing between the second and third clamping plates 220 and 240 is smaller than the size of the conductive wire. This reduces the likelihood of the conductive wire escaping from the spacing between the second and third clamping plates 220 and 240.
[0087] The second clamping plate 220 can be connected to the first clamping plate 210 via the first side plate. The first side plate can be generally plate-shaped or comprise a plurality of spaced-apart panels. The first side plate and the second clamping plate 220 can cooperate to form a U-shaped, V-shaped, or other shaped structure.
[0088] The third clamping plate 240 can be connected to the first clamping plate 210 via a second side plate. The second side plate can be generally plate-shaped or comprise a plurality of spaced-apart panels. The second side plate and the third clamping plate 240 can cooperate to form a U-shaped, V-shaped, or other shaped structure.
[0089] The first side plate can connect the second plate 220 to the first plate 210 on a side of the second plate 220 away from the third plate 240. The second side plate can connect the third plate 240 to the first plate 210 on a side of the third plate 240 away from the second plate 220.
[0090] Based on this, when the conductive wire is inserted into the first clamping plate 210, the second clamping plate 220, and the third clamping plate 240, the first side plate and the second side plate can limit the conductive wire in different directions, so that the conductive wire is located between the first side plate and the second side plate. Since the first side plate is located on the side of the second clamping plate 220 away from the third clamping plate 240, the first side plate connects the first clamping plate 210 and the second clamping plate 220, and the second side plate is located on the side of the third clamping plate 240 away from the second clamping plate 220, and the second side plate connects the third clamping plate 240 and the first clamping plate 210, the provision of the first side plate and the second side plate can reduce the possibility of the conductive wire detaching from between the first clamping plate 210, the second clamping plate 220, and the third clamping plate 240.
[0091] The second clamping plate 220 cooperates with the first clamping plate 210 to form a first socket 230, and the third clamping plate 240 cooperates with the second clamping plate 220 to form a second socket 250. The first socket 230 is connected to the second socket 250. A conductive wire can be inserted between the first clamping plate 210, the second clamping plate 220, and the third clamping plate 240 from the first socket 230 and the second socket 250. The first clamping plate 210 cooperates with the second clamping plate 220, and the first clamping plate 210 cooperates with the third clamping plate 240 to clamp the conductive wire.
[0092] A first socket 230 is formed between the second clamping plate 220 and the first clamping plate 210 , and a second socket 250 is formed between the third clamping plate 240 and the first clamping plate 210 . The first socket 230 and the second socket 250 are in communication with each other.
[0093] Specifically, the side of the second splint 220 facing away from the first side plate cooperates with the first splint 210 to form a first opening, and the side of the third splint 240 facing away from the second side plate cooperates with the first splint 210 to form a second opening, and the second opening is connected to the first opening. Therefore, the first socket 230 and the second socket 250 can be connected to the second opening through the connected first opening.
[0094] When the conductive wire is inserted between the first clamp 210, the second clamp 220 and the third clamp 240, the first clamp 210 can be in surface contact with the conductive wire, the second clamp 220 can be in line contact with the conductive wire, the second clamp 220 can also be in surface contact with the conductive wire, the third clamp 240 can be in line contact with the conductive wire, and the third clamp 240 can also be in surface contact with the conductive wire. This application example does not impose any specific restrictions on this.
[0095] In the example of the present application, the second clamping plate 220 and the third clamping plate 240 are spaced apart, a first socket 230 is formed between the second clamping plate 220 and the first clamping plate 210, and a second socket 250 is formed between the third clamping plate 240 and the second clamping plate 220, and the second socket 250 is connected to the first socket 230. The conductive wire can be inserted between the first clamping plate 210, the second clamping plate 220, and the third clamping plate 240 from the first socket 230 and the second socket 250, thereby enabling the first clamping plate 210 and the second clamping plate 220 to cooperate, and the first clamping plate 210 and the third clamping plate 240 to cooperate to clamp the conductive wire.
[0096] Because the second clamping plate 220 and the third clamping plate 240 are spaced apart, the position where the second clamping plate 220 cooperates with the first clamping plate 210 to clamp the conductive wire is spaced apart from the position where the third clamping plate 240 cooperates with the first clamping plate 210 to clamp the conductive wire. As a result, the second clamping plate 220 and the first clamping plate 210, as well as the third clamping plate 240 and the first clamping plate 210, can clamp the conductive wire at different positions, thereby improving the connection reliability between the terminal block 200 and the conductive wire, and ensuring the reliability of the connection between the conductive wire and the circuit breaker 100.
[0097] In addition, compared with the prior art, in which the connection between the terminal block and the conductive wire is achieved by adjusting the adjustment screw, in the example of the present application, the connection between the terminal block 200 and the conductive wire can be achieved by simply inserting the conductive wire from the first socket 230 and the second socket 250 between the first clamping plate 210, the second clamping plate 220 and the third clamping plate 240, which improves the wiring efficiency.
[0098] Based on the connection terminal 200 provided in the above example, Figure 6 For the structural diagram of another terminal block provided for this application example, please refer to Figure 6 The second clamping plate 220 includes a plurality of first sub-plates 221 spaced apart along the direction in which the conductive wire is inserted into the first socket 230 , and / or the third clamping plate 240 includes a plurality of second sub-plates 241 spaced apart along the direction in which the conductive wire is inserted into the second socket 250 .
[0099] The configuration of the second splint 220 is similar to that of the third splint 240 . In this application, only the second splint 220 is used as an example to exemplarily describe the configuration of the second splint 220 and the third splint 240 .
[0100] In the example of the present application, only the second splint 220 may include a plurality of first sub-plates 221 spaced apart, or only the third splint 240 may include a plurality of second sub-plates 241 spaced apart, or the second splint 220 may include a plurality of first sub-plates 221 spaced apart, and the third splint 240 may include a plurality of third sub-plates spaced apart. The example of the present application does not impose any specific restrictions on this.
[0101] Along the direction of insertion of the conductive wire into the first socket 230, the dimensions of the plurality of first split boards 221 can be the same or different. The distance between two adjacent first split boards 221 can be the same or different. This example application does not limit the specific configuration of the first split boards 221.
[0102] Compared with the second clamping plate 220 which is a plate-like structure, in the example of the present application, along the direction of the conductive wire being inserted into the first socket 230, the second clamping plate 220 is provided to include a plurality of first sub-plates 221 arranged at intervals, so that each first sub-plate 221 can cooperate with the first clamping plate 210 to clamp the conductive wire, thereby improving the reliability of the first clamping plate 210 and the second clamping plate 220 in cooperating to clamp the conductive wire.
[0103] In the case where the surface of the first clamping plate 210 or the second clamping plate 220 is uneven, by providing the second clamping plate 220 with a plurality of first sub-plates 221 arranged at intervals, the effective contact area between the first sub-plates 221 and the conductive wire can be increased, further improving the reliability of the first clamping plate 210 and the second clamping plate 220 in clamping the conductive wire.
[0104] Based on the wiring terminal 200 provided in the above example, please refer to Figure 6 If the second clamping plate 220 includes a plurality of first split plates 221 spaced apart, the plurality of first split plates 221 are evenly arranged along the direction in which the conductive wire is inserted into the first socket 230. If the third clamping plate 240 includes a plurality of second split plates 241 spaced apart, the plurality of second split plates 241 are evenly arranged along the direction in which the conductive wire is inserted into the second socket 250.
[0105] The uniform arrangement of the plurality of first split boards 221 may mean that, along the direction in which the conductive wire is inserted into the first socket 230 , the plurality of first split boards 221 have the same size and the distance between two adjacent first split boards 221 is the same.
[0106] In the example of the present application, by evenly arranging multiple first sub-plates 221 along the direction in which the conductive wire is inserted into the first socket 230 , the forces exerted on the conductive wire by the multiple first sub-plates 221 can be made substantially the same, thereby reducing the possibility of different temperature rises occurring at the contact points between the conductive wire and different first sub-plates 221 .
[0107] The second sub-board 241 plays a similar role to the first sub-board 221 . For details about the role of the second sub-board 241 , please refer to the description of the first sub-board 221 , which will not be described in detail in this application example.
[0108] Based on the example terminal block 200 provided above, a first guide surface is provided on the side of the second clamping plate 220 facing the first socket 230, and the first guide surface is inclined in a direction that matches the direction in which the conductive wire is inserted into the first socket 230. Alternatively, a second guide surface is provided on the side of the third clamping plate 240 facing the second socket 250, and the second guide surface is inclined in a direction that matches the direction in which the conductive wire is inserted into the second socket 250.
[0109] In the wiring terminal 200 provided in the example of the present application, only the first guide surface may be provided, only the second guide surface may be provided, or both the first guide surface and the second guide surface may be provided.
[0110] The configuration of the first guide surface is similar to that of the second guide surface. This application example only takes the first guide surface as an example to describe the implementation of the first guide surface and the second guide surface.
[0111] The first guide surface may be provided only on one side of the second clamping plate 220 facing the first insertion port 230 .
[0112] In the case that the second clip includes a plurality of first split plates 221 , a first guide surface may be provided on a side of each first split plate 221 facing the first socket 230 .
[0113] The first guide surface can be an inclined surface or an arc surface. In the embodiment of the present application, regardless of whether the first guide surface is an inclined surface or an arc surface, the first guide surface can be provided so that the distance between the first clamping plate 210 and the second clamping plate 220 gradually decreases along the direction in which the conductive wire is inserted into the first socket 230, that is, the opening size of the first opening gradually decreases.
[0114] In this example, by providing a first guide surface, the distance between the first clamping plate 210 and the second clamping plate 220 can be gradually reduced along the direction in which the conductive wire is inserted into the first socket 230. That is, during the insertion of the conductive wire into the terminal block 200, the conductive wire can first extend into the larger end between the first clamping plate 210 and the second clamping plate 220, thereby facilitating the mating of the conductive wire with the terminal block 200 and improving the efficiency of assembly of the terminal block 200 and the conductive wire.
[0115] The structure of the second guide surface is similar to that of the first guide surface, and the functions they play are similar, so this application example will not be described in detail here.
[0116] Based on the connection terminal 200 provided in the above example, Figure 7 For the structural diagram of another terminal block provided for this application example, please refer to Figures 5 to 7The terminal block 200 may further include a limiting protrusion 260. The limiting protrusion 260 may be provided on the first clamping plate 210, the second clamping plate 220, or the third clamping plate 240. This application example is described only by taking the limiting protrusion 260 provided on the first clamping plate 210 as an example.
[0117] The limiting protrusion 260 is provided on the side of the first clamping plate 210 facing the second clamping plate 220 and the limiting protrusion 260 is provided on the end of the first clamping plate 210 away from the first socket 230 . The limiting protrusion 260 can limit the relative position of the conductive wire and the first clamping plate 210 .
[0118] The limiting protrusion 260 may be arranged at an angle to the first clamping plate 210 .
[0119] Along the direction from the first side plate to the second side plate, the size of the limiting protrusion 260 can be equal to the size of the first clamping plate 210, and the size of the limiting protrusion 260 can also be different from the size of the first clamping plate 210. This application example does not impose specific restrictions on this.
[0120] The end of the first clamping plate 210 away from the first socket 230 is the limiting end. Based on this, the limiting protrusion 260 can be provided on the side of the first clamping plate 210 facing the second clamping plate 220 and the third clamping plate 240, and the limiting protrusion 260 can be provided at the limiting end of the first clamping plate 210, or the limiting protrusion 260 can be provided near the limiting end of the first clamping plate 210.
[0121] Based on the above, because the limiting protrusion 260 is provided on the side of the first clamping plate 210 facing the second clamping plate 220, and the limiting protrusion 260 is provided on the end of the first clamping plate 210 facing away from the first socket 230, when the conductive wire is inserted from the first socket 230 into the terminal block 200, the conductive wire can extend to a position abutting the limiting protrusion 260. Therefore, the limiting protrusion 260 can limit the relative position of the conductive wire and the first clamping plate 210, thereby reducing the possibility that the conductive wire will pass through the terminal block 200 and extend into the interior of the circuit breaker 100, thereby causing damage to other structures within the circuit breaker 100.
[0122] In the example terminal block 200 described above, a first anti-slip structure is provided on the side of the first clamping plate 210 facing the second clamping plate 220, and the first anti-slip structure contacts the conductive wire. Alternatively, a second anti-slip structure is provided on the side of the second clamping plate 220 facing the first clamping plate 210, and the second anti-slip structure contacts the conductive wire.
[0123] In the examples of this application, the terminal block 200 may be provided with only the first anti-slip structure, the terminal block 200 may be provided with only the second anti-slip structure, or the terminal block 200 may be provided with both the first anti-slip structure and the second anti-slip structure. This example of this application does not impose any specific restrictions on this.
[0124] The implementation methods of the first anti-slip structure and the second anti-slip structure are similar. Next, the implementation methods of the first anti-slip structure and the second anti-slip structure will be briefly described by taking the first anti-slip structure as an example.
[0125] The first anti-slip structure can be a protrusion, groove, or other pattern provided on the first clamping plate 210. The first anti-slip structure can also be made of a material with conductive properties and a relatively high roughness, such as conductive silicone or other materials. This application example does not limit the specific implementation of the first anti-slip structure.
[0126] Based on the above, since the first clamping plate 210 is provided with a first anti-slip structure on the side facing the second clamping plate 220, when the conductive wire is inserted into the first clamping plate 210 and the second clamping plate 220 bracket, the first anti-slip structure can contact the conductive wire, which can increase the friction between the first clamping plate 210 and the conductive wire, reduce the possibility of the conductive wire detaching from between the first clamping plate 210 and the second clamping plate 220, and further ensure the connection reliability of the conductive wire and the terminal block 200.
[0127] The role played by the second anti-slip structure is similar to that played by the first anti-slip structure, and this application example will not elaborate on this.
[0128] Based on the terminal block 200 provided in the above example, a third anti-slip structure can be provided on the side of the third clamping plate 240 facing the first clamping plate 210. The third anti-slip structure is implemented in a similar manner to the first anti-slip structure and has a similar function, so this application example will not be described in detail here.
[0129] The connection terminal 200 provided in the example of the present application may be provided with at least one of a first anti-slip structure, a second anti-slip structure, and a third anti-slip structure.
[0130] Based on the wiring terminal 200 provided in the above example, please refer to Figures 5 to 7 The terminal block 200 may further include a connecting plate 270. The connecting plate 270 is connected to one end of the first clamping plate 210 away from the first socket 230, and the end of the connecting plate 270 away from the first clamping plate 210 is electrically connected to the conductive structure.
[0131] The connecting plate 270 can extend relative to the first clamping plate 210 in a direction toward the conductive structure. Depending on the usage environment of the terminal block 200, the implementation of the connecting plate 270 can vary. The following description of the structure of the connecting plate 270 is based on the example of the terminal block 200 being applicable to the magnetic protection system 120 and the thermal protection system 130.
[0132] For example, when the terminal block 200 is suitable for the magnetic protection system 120, please refer to Figure 3 and Figure 5, the connection terminal 200 may be the first connection terminal 121 .
[0133] At this time, the connecting plate 270 can be connected to the end of the first clamping plate 210 away from the first socket 230 through the limiting protrusion 260. The connecting plate 270 can extend relative to the limiting protrusion 260 in a direction away from the first clamping plate 210 to connect with the coil assembly 122 in the magnetic protection system 120.
[0134] For example, when the terminal block 200 is suitable for the thermal protection system 130, please refer to Figure 4 and Figure 7 , the connection terminal 200 may be the second connection terminal 131 .
[0135] At this time, the connecting plate 270 can be directly connected to the first clamping plate 210 , and the connecting plate 270 extends relative to the first clamping plate 210 in a direction away from the second clamping plate 220 and the third clamping plate 240 to connect to the bimetallic strip 132 in the thermal protection system 130 .
[0136] Based on the above, since one end of the connecting plate 270 is connected to the first clamping plate 210 and the other end of the connecting plate 270 is connected to the conductive structure, the electrical connection between the terminal block 200 and the conductive structure can be achieved by providing the connecting plate 270 .
[0137] Based on the connection terminal 200 provided in the above example, the connection terminal 200 may further be provided with a snap-fit groove, and correspondingly, a snap-fit protrusion may be provided on the inner wall.
[0138] The snap-in slot can be positioned in a variety of locations. For example, the snap-in slot can be positioned on the side of the connecting section facing the inner wall of the housing 110. Alternatively, the snap-in slot can be positioned on the side of the limiting protrusion 260 facing the inner wall of the housing 110, with the position of the limiting protrusion corresponding to the position of the snap-in slot. This example does not impose any specific limitations on the placement of the snap-in slot and the snap-in protrusion.
[0139] The cooperation between the snap-fit groove and the snap-fit protrusion can further ensure the assembly reliability of the connection terminal 200 and the housing 110 , and reduce the amplitude of shaking of the connection terminal 200 relative to the housing 110 .
[0140] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.
Claims
1. A terminal block, characterized in that: include: a first clamping plate connected to the conductive structure; a second splint, a portion of the second splint being spaced apart from the first splint, the second splint cooperating with the first splint to form a first socket; The third clamping plate is spaced apart from the second clamping plate, and the third clamping plate is arranged on the side of the first clamping plate facing the second clamping plate. The third clamping plate cooperates with the first clamping plate to form a second socket, and the second socket is connected to the first socket. The conductive wire can extend into the terminal block from the first socket and the second socket. The first clamping plate, the second clamping plate and the third clamping plate cooperate to clamp the conductive wire.
2. The terminal block according to claim 1, wherein: Along the direction of inserting the conductive wire into the first socket, the second clamping plate includes a plurality of first sub-plates arranged at intervals; and / or, Along the direction in which the conductive wire is inserted into the second socket, the third clamping plate includes a plurality of second sub-plates that are spaced apart.
3. The terminal block according to claim 2, wherein: In the case where the second clamping plate includes a plurality of first split plates arranged at intervals, the plurality of first split plates are evenly arranged along the direction in which the conductive wire is inserted into the first socket; In the case that the third clamping plate includes a plurality of second sub-plates arranged at intervals, the plurality of second sub-plates are evenly arranged along the direction in which the conductive wire is inserted into the second socket.
4. The terminal block according to claim 1, wherein: A first guide surface is provided on a side of the second clamping plate facing the first socket, and an inclined direction of the first guide surface is adapted to a direction in which the conductive wire is inserted into the first socket; and / or, A second guide surface is provided on a side of the third clamping plate facing the second socket, and an inclined direction of the second guide surface is adapted to a direction in which the conductive wire is inserted into the second socket.
5. The connection terminal according to claim 1, characterized in that: Also includes: The limiting protrusion is provided on the side of the first clamping plate facing the second clamping plate, and the limiting protrusion is provided on the end of the first clamping plate away from the first socket. The limiting protrusion can limit the relative position of the conductive wire and the first clamping plate.
6. The connection terminal according to any one of claims 1 to 4, characterized in that: A first anti-slip structure is provided on a side of the first clamping plate facing the second clamping plate, and the first anti-slip structure is in contact with the conductive wire; and / or, A second anti-slip structure is provided on a side of the second clamping plate facing the first clamping plate, and the second anti-slip structure is in contact with the conductive wire.
7. The connection terminal according to claim 5, characterized in that: Also includes: A connecting plate is connected to an end of the first clamping plate away from the first socket, and an end of the connecting plate away from the first clamping plate is electrically connected to the conductive structure.
8. A magnetic protection system, characterized in that: It comprises a coil assembly, a mounting bracket and the terminal block according to any one of claims 1 to 7; The coil assembly is mounted on the mounting bracket, and the connection terminal is electrically connected to the coil assembly.
9. A thermal protection system, characterized in that: comprising a bimetallic strip, a thermal element, and the terminal according to any one of claims 1 to 7; Part of the bimetallic strip is fixedly connected to the thermal element, and the wiring terminal is electrically connected to the bimetallic strip.
10. A circuit breaker, characterized in that: The circuit breaker comprises a housing and the magnetic protection system according to claim 8, wherein the magnetic protection system is mounted on the housing, the wiring terminal in the magnetic protection system is a first wiring terminal, a side wall of the housing is provided with a first wiring port, and the first wiring port is adapted to the first wiring terminal; and / or, The circuit breaker includes a shell and the thermal protection system according to claim 9, the thermal protection system is installed in the shell, the wiring terminal in the thermal protection system is a second wiring terminal, the side wall of the shell is provided with a second wiring port, and the second wiring port is adapted to the second wiring terminal.