wiring assembly

Abstract

This utility model discloses a wiring assembly, including a terminal body and at least one breakable bolt. The terminal body has a connecting hole and at least one threaded hole. The two ends of the threaded hole penetrate the outer side of the terminal body and the inner wall of the connecting hole, respectively. The terminal body is a conductor. The breakable bolt includes a nut and a screw connected to each other. At least one neck is provided between the end face of the nut near the screw and the end face of the screw away from the nut. The breakable bolt is used to pass through the threaded hole and extend into the connecting hole, and is threadedly connected to the threaded hole to abut against the wire in the connecting hole. The terminal body includes an outer circle and a tongue bottom surface. The center line of the outer circle is not coaxial with the center line of the connecting hole. The tongue bottom surface is provided with a straight groove with a V-shaped cross-section. This utility model uses a breakable bolt to achieve electrical connection of wires of different specifications and sizes, effectively improving the applicability of the wiring assembly.

Description

Technical Field

[0001] This application relates to the field of electrical connection technology, and in particular to a wiring assembly. Background Technology

[0002] In electrical connection systems, terminals are key components for ensuring reliable electrical conduction between conductors and equipment. Existing technologies suffer from the following problems: (1) Diverse conductor types: Commonly used conductors include solid conductors, non-compactly stranded round conductors, and soft conductors. (2) Inconsistent conductor diameter specifications: According to the national standard "Conductors of Cables (GB / T3956 2008)," the maximum resistance per kilometer of cable conductors at 20°C must meet the standard requirements. To meet this resistance standard, domestic manufacturers produce conductors with varying actual diameters. Due to the diversity of conductor sizes, users must purchase terminals of corresponding sizes based on the specific diameter of each batch of conductors. This leads to difficulties in selection and maintenance, such as high inventory management costs (requiring multiple terminal specifications), high risk of mismatch during on-site installation (diameter mismatch leading to loose crimping or conductor damage), and poor compatibility (older terminal models cannot be adapted to new conductors).

[0003] The issues concerning the diversity of wire types, differences in conductor diameters, and the purchase of different specifications of terminals by users in this background art have been clearly described in the background art of the prior application (application number: CN202421710651.5, application date: July 19, 2024), and its technical essence is consistent with that of this application. Summary of the Invention

[0004] The purpose of this application is to overcome the shortcomings of the prior art and provide a wiring assembly with a wide range of applications. By using a screw-off bolt to achieve electrical connection of wires of different specifications and sizes, the wiring assembly can effectively improve its applicability and reduce users' procurement and maintenance costs.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution: This application provides a wiring assembly, including: a terminal body, on which a connection hole and at least one threaded hole are provided, the two ends of the threaded hole respectively penetrating the outer side of the terminal body and the inner wall of the connection hole, the terminal body being a conductor; at least one break-off bolt, the break-off bolt including a nut and a screw connected to each other, at least one neck is provided between the end face of the nut near the screw and the end face of the screw away from the nut, the break-off bolt is used to pass through the threaded hole and extend into the connection hole, and is threadedly connected to the threaded hole to abut against the wire in the connection hole; the terminal body includes an outer circle and a tongue bottom surface, the center line of the outer circle is not coaxial with the center line of the connection hole; the tongue bottom surface is provided with a straight groove with a V-shaped cross-section.

[0006] Furthermore, the bottom of the screw is provided with a large arc portion, the maximum thickness of which is H=D / 5, where D is the diameter of the screw.

[0007] Furthermore, the radius R1 of the large arc portion is greater than or equal to the radius R2 of the connecting hole.

[0008] Furthermore, the diameter D of the screw is greater than 2D2 / 3, and the diameter D of the screw is less than the diameter D2 of the connecting hole.

[0009] Furthermore, there are two or more necks between the end face of the nut near the screw and the end face of the screw away from the nut, and a threaded section is provided between any two adjacent necks.

[0010] Furthermore, the end face at the connection between the nut and the screw is provided with a break neck.

[0011] Furthermore, the number of threaded holes is two or more, and the two or more threaded holes are parallel in axis and arranged sequentially along the axial direction of the connecting hole.

[0012] Furthermore, the number of threaded holes is two or more, and the axes of any two adjacent threaded holes form a predetermined angle, and the two or more threaded holes are staggered along the axial direction of the connecting hole.

[0013] Furthermore, the included angle between the axes of two adjacent threaded holes is 10°-60°.

[0014] Furthermore, the axis of the threaded hole is arranged radially along the connecting hole.

[0015] Furthermore, the wiring assembly also includes at least one gasket, which is installed in the connection hole to cooperate with the inner wall of the connection hole to form a connection cavity for accommodating the wire to be connected, and the connection cavity communicates with the threaded hole.

[0016] Furthermore, the gasket is a conductor, and there are two or more gaskets. Each gasket has a different cross-sectional area. The gasket has a groove extending through both ends. The inner surface of the groove and the wall of the connecting hole opposite it form a connecting cavity. The inner surface of the groove is generally arc-shaped. Multiple protruding teeth are formed on the surface of the gasket near the threaded hole.

[0017] Furthermore, multiple grooves are formed on the pipe wall away from the threaded hole, and a toothed strip is formed between any two adjacent grooves.

[0018] Furthermore, the centerline of the toothed strip is not coaxial with the centerline of the connecting hole; the centerline of the toothed strip is not coaxial with the centerline of the outer circle. Attached Figure Description

[0019] To make the advantages of this application more readily understood, the application briefly described above will be described in more detail with reference to the specific embodiments shown in the accompanying drawings. It is to be understood that these drawings depict only typical embodiments of this application and should not be considered as limiting its scope of protection. The application is described and explained with additional features and details through the drawings.

[0020] Figure 1 A schematic diagram of the structure of a terminal body provided in this application; Figure 2 This application provides a structural schematic diagram of a bolt that can be easily unscrewed. Figure 3 This application provides a schematic diagram of the assembled wiring assembly. Figure 4 A schematic diagram of the wiring assembly after assembly, provided in this application, from another perspective; Figure 5 A schematic diagram of the wiring assembly provided in this application from another perspective after assembly; Figure 6 This application provides a schematic diagram of the internal structure of a terminal body connection hole; Figure 7 A schematic diagram of a terminal body structure provided in this application; Figure 8 For this application Figure 9 BB-direction sectional view in the middle; Figure 9 This is a schematic diagram of the installation of a bolt with a large arc portion and the assembly of the terminal body provided in this application; Figure 10 This is a schematic diagram of the linear groove in this application.

[0021] The attached figures are labeled as follows: 100. Terminal body; 110. Connecting hole; 120. Threaded hole; 200. Unscrew bolt; 210. Nut; 220, Screw; 230, Broken neck; 300, Washer; 310, Groove; 320, Raised tooth; 130, Slot; 140, Toothed strip; 150, straight groove; 160, outer circle; 170, bottom surface of tongue; 240, large arc; 400, center line of outer circle; 500, center line of connecting hole; 600, center line of toothed strip. Detailed Implementation

[0022] In the following description, numerous specific details are set forth to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that embodiments of this application may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with embodiments of this application.

[0023] To fully understand the embodiments of this application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may be available in addition to these detailed descriptions.

[0024] In the description of this application, the term "A and / or B" means all possible combinations of A and B, such as only A, only B, or A and B. The terms "at least one A or B" or "at least one of A and B" have a similar meaning to "A and / or B" and can include only A, only B, or A and B. The singular terms "a" or "this" can also include plural forms. The terms "inner side," "outer side," "longitudinal," "lateral," "upper," "lower," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and do not require this application to be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] The embodiments of this application will be described in further detail below with reference to the accompanying drawings: This application provides a wiring assembly including a terminal body 100 and at least one breakaway bolt 200. The terminal body 100 has a connection hole 110 and at least one threaded hole 120. The two ends of the threaded hole 120 penetrate the outer surface of the terminal body 100 and the inner wall of the connection hole 110, respectively. The terminal body 100 is a conductor. The breakaway bolt 200 includes a nut 210 and a screw 220 connected to each other. At least one neck 230 is provided between the end face of the nut 210 near the screw 220 and the end face of the screw 220 away from the nut 210.

[0026] When using a wiring assembly to make an electrical connection for the wires, first insert one end of the wire into the connection hole 110, then pass the end of the break bolt 200 away from the nut 210 through the threaded hole 120 and extend it into the connection hole 110. Continue to rotate the break bolt 200 until it abuts against the wire in the connection hole 110. Then rotate the break bolt 200 further to gradually tighten it against the wire. During the process of tightening the bolt 200 against the wire, if the wire diameter is small, all the broken necks 230 on the screw 220 will extend into the connecting hole 110 (the part between all the broken necks 230 on the screw 220 and the nut 210 will be threadedly connected to the threaded hole 120), and the bolt 200 will not be broken. If the wire diameter is large, at least one broken neck 230 on the screw 220 will not extend into the connecting hole 110 (the part between the broken neck 230 on the screw 220 and the nut 210 will not be threadedly connected to the threaded hole 120), and the broken neck 230 that does not extend into the connecting hole 110 will break under the action of torque and form a smooth fracture surface. The nut 210 and part of the screw 220 will separate, and the part of the bolt 200 protruding from the outer surface of the terminal body 100 after the connection is completed will be removed or reduced.

[0027] As can be seen, since the screw 220 of the break bolt 200 is provided with at least one neck 230, the break bolt 200 can break or not break at different positions of the neck 230 for wires of different sizes. This can reduce the radial dimension of the overall structure formed after the wire and the wiring assembly are connected. At the same time, it can be applied to wires of different sizes, expanding the application range and scenarios.

[0028] In one possible implementation, the terminal body includes an outer circular portion 160 and a tongue bottom surface 170. To increase the length of the threaded hole, the center line 400 of the outer circular portion is not coaxial with the center line 500 of the connecting hole. By increasing the length of the threaded hole, the bolt has a stronger clamping force. To increase the contact area and friction, the tongue bottom surface 170 is provided with a straight groove with a V-shaped cross-section to enhance the mechanical connection strength and electrical contact reliability between the wire and the wiring assembly of this application. (This embodiment is consistent with the appendix to the prior art.) Figure 4 (Same as shown).

[0029] In one possible implementation, the bottom of the screw is provided with a large arc section. In order to increase the crimping area between the bolt and the wire and improve the crimping strength, the maximum thickness of the large arc section is H=D / 5, where D is the diameter of the screw.

[0030] In one possible implementation, to improve the crimping effect of small-diameter wires, the small-diameter wires are crimped more tightly and firmly, so that the radius R1 of the large arc portion set at the bottom of the screw is greater than or equal to the radius R2 of the connecting hole.

[0031] In one possible implementation, to reduce crimping damage to the wires, the diameter D of the screw is made greater than 2D² / 3, and the diameter of the screw is smaller than the diameter D² of the connecting hole.

[0032] In one possible implementation, two or more necks 230 are provided between the end face of the nut 210 near the screw 220 and the end face of the screw 220 away from the nut 210, and a threaded segment is provided between any two adjacent necks 230.

[0033] In the above implementation process, two or more broken necks 230 are provided on the screw 220, and the wiring assembly can be used for electrical connection of at least two different sizes of wires.

[0034] In one possible implementation, the end face at the connection between the nut 210 and the screw 220 is provided with a neck 230.

[0035] In the above implementation process, a neck 230 is provided at the connection between the nut 210 and the screw 220. When the size of the wire to be connected is large, when the screw 220 is fully screwed into the threaded hole 120, the bolt 200 is broken at the connection between the nut 210 and the screw 220, forming a smooth fracture surface. That is, the nut 210 is removed from the whole after the wire is connected to the wiring assembly, reducing the overall size and volume.

[0036] Optionally, there may be two or more threaded holes 120, with the axes of the two or more threaded holes 120 parallel and arranged sequentially along the axial direction of the connecting hole 110. That is, multiple bolts 200 tighten the wire along the axis of the terminal body 100.

[0037] Preferably, there are two or more threaded holes 120, and the axes of any two adjacent threaded holes 120 form a predetermined angle, and the two or more threaded holes 120 are staggered along the axial direction of the connecting hole 110. That is, multiple bolts 200 can tighten the wire from different radial directions, which can improve the stability of the wire connection.

[0038] Optionally, the included angle between the axes of two adjacent threaded holes 120 is 10°-60°.

[0039] Optionally, the included angle between the axes of two adjacent threaded holes 120 is 10°, 20°, 40°, 50°, or 60°.

[0040] In one possible implementation, the axis of the threaded hole 120 is arranged radially along the connecting hole 110.

[0041] During the above implementation process, the unscrewed bolt 200 can press against the wire radially along the connecting hole 110 and the wire, reducing or avoiding the generation of axial force, which can improve the fastening effect on the wire.

[0042] To ensure the structural stability of the bolt 200, the number of broken necks 230 on the bolt is limited, generally 2-3. To further expand the range of wire sizes applicable to the wiring assembly, the wiring assembly also includes at least one washer 300, which is installed within the connection hole 110 to mate with the inner wall of the connection hole 110 to form a connection cavity for accommodating the wire to be connected. The connection cavity communicates with the threaded hole 120.

[0043] In the above implementation process, when the diameter of the wire differs significantly from the inner diameter of the connection hole 110, and the broken bolt 200 cannot be fully tightened into the threaded hole 120 to secure the wire in the connection hole 110, a shim 300 can be added inside the connection hole 110. The shim 300, in conjunction with the broken bolt 200, secures the wire from both sides. While ensuring the stability of the electrical and structural connections, this further expands the range of wire sizes applicable to the wiring assembly.

[0044] Preferably, the gasket 300 is a conductor.

[0045] In one possible implementation, the number of gaskets 300 is two or more, and each gasket 300 has a different cross-sectional area.

[0046] In the above implementation process, gaskets 300 with different cross-sectional areas can be used with the same unscrewed bolts 200 to accommodate wires of different sizes.

[0047] In one possible implementation, the gasket 300 is formed with a groove 310 extending through both ends thereto. The inner surface of the groove 310 forms a connecting cavity with the wall of the connecting hole 110 opposite to it. The inner surface of the groove 310 is generally an arc-shaped curved surface.

[0048] In the above implementation process, since most of the cross surfaces of the conductors are circular or nearly circular, the arc-shaped groove 310 structure on the gasket 300 is more conducive to increasing the contact area between the gasket 300 and the conductor, reducing the gap between the conductor and the gasket 300 and the connecting hole 110, improving the stability of the structural connection and electrical connection, and facilitating the insertion of the gasket 300 between the conductor and the connecting hole 110 or the insertion of the conductor between the gasket 300 and the connecting hole 110.

[0049] In one possible implementation, the surface of the gasket 300 near the threaded hole 120 is formed with a plurality of protrusions 320.

[0050] In the above implementation process, a protrusion is provided on the surface of the gasket 300 that is in contact with the wire. During the tightening process of the bolt 200, due to the pressure from the bolt 200, the protrusion 320 on the gasket 300 can pierce the oxide layer on the surface of the wire, thereby effectively improving the electrical connection performance between the wire and the terminal body 100.

[0051] Optionally, the protrusion 320 extends along the length of the gasket 300. When a groove 310 is formed on the gasket 300 and the protrusion 320 is disposed on the inner surface of the groove 310, it is convenient to process the protrusion 320 along the length of the gasket 300.

[0052] In one possible implementation, multiple grooves 130 are formed on the pipe wall of the connecting hole 110 away from the threaded hole 120, and a toothed strip 140 is formed between any two adjacent grooves 130.

[0053] In the above implementation process, to increase the friction between the gasket 300 or the wire and the terminal body 100, and to increase the mechanical strength of the terminal body 100, a toothed strip 140 formed by a groove 130 is formed on the inner wall of the connecting hole 110. The center line 600 of the toothed strip is not coaxial with the center line 500 of the connecting hole, thereby effectively improving the stability of the structural connection between the terminal body 100 and the wire, or between the terminal body 100, the gasket 300, and the wire. Furthermore, when the bolt 200 is tightened to press against the wire inside the connecting hole 110, the toothed strip 140 will pierce the oxide layer on the surface of the wire due to the pressure from the clamping member. Simultaneously, the oxide layer on the surface of the toothed strip 140 will also be damaged, thus improving the electrical connection performance between the terminal body 100 and the wire. The center line 600 of the toothed strip is not coaxial with the center line 400 of the outer circle. Figure 10 As shown, R3 is the radius of the toothed strip 140, and R4 is the radius of the outer circle 160. Figure 10 This illustration shows the eccentric positional relationship between the non-coaxial outer circular portion 160 and the connecting hole 110, and the eccentric positional relationship between the toothed strip 140 and the connecting hole 110. The eccentric arrangement between the connecting hole 110 and the outer circular portion 160 forms a longer threaded hole 120. The eccentric arrangement between the toothed strip 140 and both the connecting hole 110 and the outer circular portion 160 ensures that the toothed strip is only formed on the tube wall of the connecting hole 110 away from the threaded hole 120, thereby reducing the amount of material removed from the terminal body 100, increasing the mechanical strength of the terminal body 100, and improving the connection stability.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this application. It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or basic characteristics of this application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0056] This application claims priority to an earlier application (application number: CN202421710651.5, application date: July 19, 2024), the disclosure of which is incorporated herein by reference in its entirety.

[0057] The technical solutions for which priority is claimed are limited to those recorded in the earlier application documents, and any new content is based on the actual filing date of this application.

Claims

1. A wiring assembly, characterized by The device includes a terminal body and at least one breakable bolt. The terminal body has a connecting hole and at least one threaded hole. The two ends of the threaded hole penetrate the outer side of the terminal body and the inner wall of the connecting hole, respectively. The terminal body is a conductor. The breakable bolt includes a nut and a screw connected to each other. At least one neck is provided between the end face of the nut near the screw and the end face of the screw away from the nut. The breakable bolt is used to pass through the threaded hole and extend into the connecting hole, and is threadedly connected to the threaded hole to abut against the wire in the connecting hole. The terminal body includes an outer circle and a tongue bottom surface. The center line of the outer circle is not coaxial with the center line of the connecting hole. The tongue bottom surface is provided with a straight groove with a V-shaped cross-section.

2. The wiring assembly of claim 1, wherein, The bottom of the screw is provided with a large arc portion, the maximum thickness of which is H=D / 5, where D is the diameter of the screw.

3. The wiring assembly according to claim 2, characterized in that, The radius R1 of the large circular arc is greater than or equal to the radius R2 of the connecting hole.

4. The wiring assembly according to claim 1, characterized in that, The diameter D of the screw is greater than 2D2 / 3, and the diameter D of the screw is less than the diameter D2 of the connecting hole.

5. The wiring assembly according to claim 1, characterized in that, Two or more necks are provided between the end face of the nut near the screw and the end face of the screw away from the nut, and a threaded section is provided between any two adjacent necks.

6. The wiring assembly according to claim 1, characterized in that, The end face at the connection between the nut and the screw is provided with a break neck.

7. The wiring assembly according to claim 1, characterized in that, The number of threaded holes is two or more, and the two or more threaded holes are parallel in axis and arranged sequentially along the axial direction of the connecting hole.

8. The wiring assembly according to claim 1, characterized in that, The number of threaded holes is two or more, and the axes of any two adjacent threaded holes form a predetermined angle, and the two or more threaded holes are staggered along the axial direction of the connecting hole.

9. The wiring assembly according to claim 5 or 6, characterized in that, The included angle between the axes of two adjacent threaded holes is 10°-60°.

10. The wiring assembly according to claim 1, characterized in that, The axis of the threaded hole is arranged radially along the connecting hole.

11. The wiring assembly according to claim 1, characterized in that, It also includes at least one gasket, which is used to be installed in the connection hole to cooperate with the inner wall of the connection hole to form a connection cavity for accommodating the wire to be connected, the connection cavity communicating with the threaded hole; the gasket is a conductor; there are two or more gaskets, each gasket having a different cross-sectional area; the gasket has a groove extending through both ends thereto, the inner surface of the groove and the corresponding wall of the connection hole forming the connection cavity, the inner surface of the groove being an overall arc-shaped curved surface; the surface of the gasket near the threaded hole has multiple protrusions.

12. The wiring assembly according to claim 1, characterized in that, Multiple grooves are formed on the pipe wall away from the threaded hole of the connecting hole, and a toothed strip is formed between any two adjacent grooves.

13. The wiring assembly according to claim 10, characterized in that, The centerline of the toothed strip is not coaxial with the centerline of the connecting hole; the centerline of the toothed strip is not coaxial with the centerline of the outer circle.

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