Connecting wire and connecting terminal thereof

Abstract

Disclosed in the present invention are a connecting wire and a connecting terminal thereof. The connecting wire comprises a wire and a connecting terminal, the connecting terminal being connected to one end or two ends of the wire. The connecting terminal is a conductive structure, and comprises an external connection portion and a mounting portion. The external connection portion is used for connecting to an external conductive structure. The mounting portion is provided with a mounting hole; the mounting hole is provided with a mounting port facing away from the external connection portion; one end of the wire passes through the mounting port to be inserted into the mounting hole; part of the mounting portion deforms due to squeezing to be in contact with the wire, so as to realize fixed connection and electrical connection; and a gap is present between the mounting port and the wire. Owing to the presence of the gap between the mounting port and the wire, the tail portion of the connecting terminal is not in direct contact with the wire, so that even if the connecting terminal swings or bends relative to the wire, the tail portion of the connecting terminal does not directly press the wire, causing no friction between the tail portion of the connecting terminal and the wire, and thus avoiding fatigue fracture of the wire and prolonging the service life of the connecting wire.

Description

A connecting wire and its connecting terminal Technical Field

[0001] This invention relates to the field of wire connection structure technology, and specifically to a connecting wire and its connecting terminal. Background Technology

[0002] A connecting wire generally includes a wire and terminals. Terminals are used to connect the electrical connection parts of electrical equipment. The terminals are fixed to the wire by crimping, and the terminals serve as the conductive connection parts of the wire.

[0003] Currently, most commercially available connector cables use a cylindrical structure at the end where the terminal connects to the wire. After the terminal is crimped to the wire, a right-angle chamfer is formed at the end of the terminal, which abuts against the outer surface of the wire. During use, when the terminal swings or bends relative to the wire, the friction between the chamfered edge of the terminal and the wire can easily cause fatigue breakage of the wire, greatly affecting the service life of the connector cable. Summary of the Invention

[0004] This invention provides a connecting wire and its connecting terminal to solve the problem that wiring terminals are prone to cause wire fatigue and breakage.

[0005] In one embodiment, a connecting wire is provided, including a wire and a connecting terminal, wherein one end or both ends of the wire are connected to the connecting terminal;

[0006] The connecting terminal is a conductive structure, comprising an external portion and a mounting portion. The external portion is used to connect to an external conductive structure. The mounting portion has a mounting hole with a mounting opening facing away from the external portion. One end of the wire passes through the mounting opening and is inserted into the mounting hole. A portion of the mounting portion is squeezed and deformed to contact the wire, thereby achieving a fixed connection and an electrical connection. There is a gap between the mounting opening and the wire.

[0007] In one embodiment, the inner diameter of the mounting opening is larger than the inner diameter of the mounting hole.

[0008] In one embodiment, the mounting hole is a tapered hole or a trapezoidal hole, and the inner diameter of the mounting hole gradually decreases from the mounting opening inwards.

[0009] In one embodiment, the mounting hole is a stepped hole, and the mounting hole includes at least a first mounting hole and a second mounting hole connected in series. The first mounting hole is closer to the mounting opening than the second mounting hole, and the inner diameter of the first mounting hole is larger than the inner diameter of the second mounting hole.

[0010] In one embodiment, the edge of the mounting port is provided with an inner chamfer; and / or, the gap between the mounting port and the wire is 0.2-1.5mm.

[0011] In one embodiment, the wire includes a conductive wire and an insulating layer. The insulating layer wraps around the outside of the conductive wire, and the end of the conductive wire protrudes from the insulating layer. The conductive wire extends into the mounting hole, and a portion of the mounting portion is compressed and deformed to contact the conductive wire, thereby achieving a fixed connection and an electrical connection. The insulating layer extends to the mounting opening or into the mounting hole.

[0012] In one embodiment, an insulating connecting sleeve is further included. The insulating connecting sleeve includes a first connecting portion and a second connecting portion, which are interconnected cylindrical structures. The first connecting portion is sleeved on the outside of the mounting portion, and the second connecting portion is sleeved on the outside of the wire. The insulating connecting sleeve covers the gap between the mounting opening and the wire.

[0013] In one embodiment, the insulating connecting sleeve is a flexible elastic structure, with the first connecting portion bound to the outside of the mounting portion and the second connecting portion bound to the outside of the wire.

[0014] In one embodiment, the connecting terminal is a copper-aluminum alloy structure.

[0015] In one embodiment, a connecting terminal for a connecting wire is provided. The connecting terminal is a conductive structure, comprising an external portion and a mounting portion. The external portion is used to connect to an external conductive structure. The mounting portion has a mounting hole with a mounting opening facing away from the external portion. A portion of the mounting portion is used for compression deformation to contact a wire inserted into the mounting hole, thereby achieving a fixed connection and an electrical connection. A gap exists between the mounting opening and the wire.

[0016] According to the above embodiment of the connecting wire and its connecting terminal, since there is a gap between the mounting port and the wire, the tail of the connecting terminal does not directly contact the wire. This means that even if the connecting terminal swings or bends relative to the wire, the tail of the connecting terminal will not directly squeeze the wire, and no friction will occur between the tail of the connecting terminal and the wire. This can prevent the wire from fatigue breaking and improve the service life of the connecting wire. Attached Figure Description

[0017] Figure 1 is an axial cross-sectional view of one embodiment before the cable is crimped to the connecting terminal;

[0018] Figure 2 is an axial cross-sectional view of the connecting line in one embodiment;

[0019] Figure 3 is an axial cross-sectional view of the connecting line in one embodiment;

[0020] Figure 4 is an axial sectional view of the connecting line in one embodiment;

[0021] Figure 5 is an axial cross-sectional view of the connecting line in one embodiment;

[0022] The accompanying diagrams are labeled as follows:

[0023] 1-Wire, 11-Conductive wire, 12-Insulation layer;

[0024] 2-Connecting terminal, 21-External part, 211-Through hole, 22-Mounting part, 221-Mounting hole, 221a-First mounting hole, 221b-Second mounting hole, 222-Mounting opening, 223-Recessed part;

[0025] 3-Insulating connecting sleeve, 31-First connecting part, 32-Second connecting part. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0027] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0028] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0029] In one embodiment, a connecting line is provided. This connecting line can be connected to an electrical device. This connecting line can be used to realize electrical connection between different components. This connecting line can also be used for data or signal transmission.

[0030] The connector in this embodiment improves the connector terminal by enlarging the mounting opening at the tail of the connector terminal, so that the tail of the connector terminal does not directly contact the wire. There is a preset gap between the tail of the connector terminal and the wire. When the connector terminal swings or bends relative to the wire, friction between the tail of the connector terminal and the wire can be avoided, thereby preventing the connector terminal from wearing down the wire, making the wire less prone to fatigue breakage, and improving the service life of the connector.

[0031] Please refer to Figures 1 and 2. In this embodiment, the connecting wire mainly includes a wire 1 and connecting terminals 2. One end of the wire 1 is equipped with a connecting terminal 2, and the other end of the wire 1 can be connected to the terminal 2. The other end of the wire 1 can also be directly connected to components, for example, the other end of the wire 1 can be directly soldered to a circuit board. Connecting terminals 2 can be provided at one or both ends of the wire 1, depending on the requirements. The connection terminals 2 at the ends of the wire 1 allow the connecting wire 1 to be connected to components through methods such as plugging, snapping, and soldering. In other words, the connecting wire with connecting terminals 2 can meet the connection requirements of components.

[0032] The wire 1 includes a conductive wire 11 and an insulating layer 12. The conductive wire 11 can be a metal conductive wire such as copper wire. The insulating layer 12 has a tubular structure and is wrapped around the outside of the conductive wire 11. The insulating layer 12 can be made of insulating plastic. The insulating layer 12 can provide insulation protection for the conductive wire 11, prevent leakage of the conductive wire 11, and prevent the conductive wire 11 from being electrically connected to other external components.

[0033] The length of the conductive wire 11 is greater than the length of the insulating layer 12, and both ends of the conductive wire 11 are exposed above the insulating layer 12, allowing the two ends of the conductive wire 11 to be electrically connected to other components. When the wire 1 is manufactured, the conductive wire 11 and the insulating layer 12 can have the same length. The conductive wire 11 at both ends of the wire 1 is removed by cutting or other methods, exposing the insulating layer 12 at both ends. Alternatively, the wire 1 can be manufactured with both ends of the conductive wire 11 exposed above the insulating layer 12.

[0034] The connecting terminal 2 is a conductive structure and can be made of conductive metals such as copper, aluminum, or aluminum alloy. The connecting terminal 2 includes an external part 21 and a mounting part 22. The external part 21 and the mounting part 22 are preferably an integrated structure. The integrated structure of the connecting terminal 2 has higher structural stability and can also reduce the impedance at the connection point.

[0035] In other embodiments, the external part 21 and the mounting part 22 can also be fixed together by welding or other means, so as to achieve a fixed connection and electrical connection between the external part 21 and the mounting part 22.

[0036] In this embodiment, the external connector 21 is used to connect to an external conductive structure, such as an electrical connection terminal for connecting a sensor. The external connector 21 can have a flat structure, allowing it to fit snugly against the electrical connection terminal of the electronic component, forming a more secure and stable electrical connection. The external connector 21 can also have a through-hole 211 or other connecting structure, allowing it to be fitted onto the electrical connection terminal of the conductive post structure. The external connector 21 can also be configured as a plug or socket structure, allowing it to connect to the electrical connection terminal of the electronic component or to other connecting wires via a plug-in connection.

[0037] The mounting part 22 has a cylindrical structure and a mounting hole 221, which can be a round hole or a polygonal hole. One end of the mounting hole 221 facing away from the external connector 21 has a mounting opening 222, and the other end of the mounting hole 221 is close to the external connector 21. This other end of the mounting hole 221 can be a blind hole. The diameter of the mounting hole 221 is slightly larger than the outer diameter of the wire 1, allowing one end of the conductive wire 11 to be inserted into the mounting hole 221, thus achieving a fixed connection and electrical connection between the wire 1 and the connecting terminal 2.

[0038] One end of the conductive wire 11 is inserted into the mounting hole 221. A wire crimping device presses the middle portion of the mounting part 22, causing a radially inwardly deformed recess 223. This recess 223 contacts the conductive wire 11. For example, if the wire crimping device is a ring structure, it can crimp the mounting part 22 along the ring, causing a ring-shaped area in the middle of the mounting part 22 to concave inward and contact the conductive wire 11, thus clamping and fixing the conductive wire 11, achieving a fixed connection and electrical connection between the mounting part 22 and the conductive wire 11. Alternatively, the wire crimping device can also crimp the mounting part 22 at several points along its circumference, also achieving a concave connection between the mounting part 22 and the conductive wire 11, thus achieving a fixed connection and electrical connection.

[0039] In this embodiment, the mounting opening 222 of the mounting part 22 is relatively larger, and there is a gap between the mounting opening 222 and the wire 1. Even after the mounting part 22 deforms and is fixed to the conductive wire 11, there is still a gap between the mounting opening 222 and the wire 1. That is, after the wire 1 is crimped to the connecting terminal 2, the tail end of the connecting terminal 2 (the end with the mounting opening 222) does not contact the wire 1.

[0040] In this embodiment, the mounting hole 221 can be configured as a trapezoidal hole. The axial cross-section of the mounting hole 221 is trapezoidal, and the mounting hole 221 gradually decreases in size from the mounting opening 222 inward along the axial direction. The inner diameter of the mounting opening 222 is larger than the inner diameter of other areas within the mounting hole 221. The inner diameter of the blind end inside the mounting hole 221 is equal to the outer diameter of the conductive wire 11, and the inner diameter of other areas within the mounting hole 221 is larger than the outer diameter of the conductive wire 11, allowing one end of the conductive wire 11 to be inserted into the mounting hole 221. After the conductive wire 11 is inserted into the mounting hole 221, the inner wall of the mounting hole 221 does not contact the conductive wire 11. After being pressed by the crimping device, the inner wall of the mounting hole 221 deforms to contact the conductive wire 11.

[0041] The deformation point of the mounting part 22 is located in the middle of the axial direction, so that the deformation of the middle part of the mounting part 22 does not affect the mounting opening 222, and a gap can be maintained between the mounting opening 222 and the wire 1.

[0042] In other embodiments, the mounting hole 221 can also be a tapered hole, or the mounting opening 222 can be formed with the inner diameter gradually decreasing inward, so as to achieve the connection between the mounting part 22 and the conductive wire 11 while ensuring that there is a gap between the mounting opening 222 and the wire 1.

[0043] In this embodiment, the gap between the mounting port 222 and the wire 1 can be set according to the size relationship between the wire 1 and the connecting terminal 2. For example, the gap between the mounting port 222 and the wire 1 can be 0.2-1.5mm.

[0044] In this embodiment, since there is a gap between the mounting port 222 of the connecting terminal 2 and the wire 1, the tail of the connecting terminal 2 does not directly contact the wire 1. This means that even if the connecting terminal 2 swings or bends relative to the wire, the tail of the connecting terminal 2 will not directly squeeze the wire. There will be no friction between the tail of the connecting terminal 2 and the wire 1, which can prevent fatigue breakage of the wire and improve the service life of the connecting wire.

[0045] In one embodiment, the mounting hole 221 of the mounting part 22 may also be of other structures, such that the mounting opening 222 is larger than the inner diameter of the mounting hole 221, so that a gap can be formed between the mounting opening 222 and the wire 1.

[0046] Please refer to Figure 3. The mounting hole 221 can be a multi-step hole, for example, a two-step hole. The mounting hole 221 includes a first mounting hole 221a and a second mounting hole 221b connected in series. The first mounting hole 221a is located on the outer side, relatively close to the mounting opening 222, which is the edge of the first mounting hole 221a. The second mounting hole 221b is located on the inner side, relatively far from the mounting opening 222. The inner diameter of the first mounting hole 221a is larger than the outer diameter of the second mounting hole 221b. Specifically, the inner diameter of the first mounting hole 221a is larger than the outer diameter of the conductive wire 11, and the inner diameter of the second mounting hole 221b is slightly larger than the outer diameter of the conductive wire 11.

[0047] The axial length of the first mounting hole 221a can be less than the axial length of the second mounting hole 221b, and the recess 223 of the mounting portion 22 can be located at the position of the second mounting hole 221b. This arrangement can reduce the gap between the inside of the mounting hole 221 and the wire 1, and improve the stability of the electrical connection between the wire 1 and the connecting terminal 2.

[0048] The mounting hole 221 is set as a stepped hole, which can also achieve conductive connection between the wire 1 and the connecting terminal 2 while forming a gap between the tail of the connecting terminal 2 and the wire 1, so as to avoid wear of the wire 1 by the connecting terminal 2.

[0049] In one embodiment, the insulating layer 12 can extend into the mounting hole 221, that is, the ends of the conductive wires 11 exposed by the insulating layer 12 are all located inside the mounting hole 221, which can avoid the risk of leakage caused by the conductive wires 11 being exposed on the outside.

[0050] Please refer to Figure 4. In one embodiment, the connecting wire further includes an insulating connecting sleeve 3. The insulating connecting sleeve 3 is sleeved at the connection between the wire 1 and the connecting terminal 2. The insulating connecting sleeve 3 is made of insulating material, such as silicone. The insulating connecting sleeve 3 can improve the stability of the connection between the wire 1 and the connecting terminal 2, and can also seal the gap generated by the mounting port 222, playing a role in dust and water prevention, and can prevent moisture from corroding and oxidizing the wire 1.

[0051] The insulating connecting sleeve 3 includes a first connecting part 31 and a second connecting part 32. The first connecting part 31 and the second connecting part 32 can be an integral structure. Both the first connecting part 31 and the second connecting part 32 are cylindrical structures. The first connecting part 31 and the second connecting part 32 are connected in series and communicate with each other. The first connecting part 31 is sleeved on the outside of the mounting part 22, and the second connecting part 32 is sleeved on the outside of the wire 1. The insulating connecting sleeve 3 covers the gap between the mounting opening 222 and the wire 1.

[0052] The insulating connecting sleeve 3 can be a flexible elastic structure. The first connecting part 31 is bound to the outside of the mounting part 22 by elastic deformation, and the second connecting part 32 is bound to the outside of the wire 1 by elastic deformation. The first connecting part 31 and the second connecting part 32 are bound and fixed by elastic deformation, which can improve the stability of the insulating connecting sleeve 3 and prevent the insulating connecting sleeve 3 from sliding relative to the wire 1 and the connecting terminal 2.

[0053] During manufacturing, the second connecting part 32 can be first fitted onto the wire 1, and the insulating connecting sleeve 3 can be moved toward the middle of the wire 1 to expose the conductive wire 11. After the conductive wire 11 is inserted into the mounting hole 221 of the connecting terminal 2 and crimped and fixed, the insulating connecting sleeve 3 can be moved toward one end of the connecting terminal 2 until the first connecting part 31 is deformed and fitted onto the outside of the mounting part 22, thus completing the installation of the insulating connecting sleeve 3.

[0054] In this embodiment, preferably, the insulation layer 12 extends into the mounting hole 221 to provide secondary protection for the wire 1, which can further improve the safety of the wire 1.

[0055] Referring to Figure 5, in other embodiments, since the insulating connecting sleeve 3 is fitted onto the connection between the wire 1 and the connecting terminal 2, the insulating layer 12 can extend to or near the mounting opening 222, and the insulating layer 12 extends into the second connecting portion 32. Under the protection of the insulating connecting sleeve 3, the insulating layer 12 is relatively shorter and does not affect the normal use of the wire 1.

[0056] In one embodiment, the connecting terminal 2 has a copper-aluminum alloy structure, and the conductive wire 11 of the wire 1 can be a copper wire or an aluminum wire. The connecting terminal 2 can achieve a conductive connection of the same material, copper to copper or aluminum to aluminum, with the conductive wire 11 and an external conductive terminal.

[0057] Different materials have different coefficients of thermal expansion. When external temperatures change, different materials will deform differently. Therefore, direct electrical connection between different materials will cause gaps to form at the joint. Aluminum alloys will gradually oxidize in these gaps. The presence of gaps and oxide layers increases the contact resistance, leading to heat buildup under high current and potentially causing a fire. When the fault occurs on the neutral wire, a burned-out neutral wire can also damage household appliances, resulting in even greater economic losses.

[0058] In this embodiment, the connecting terminal 2 is a copper-aluminum alloy terminal. It fully utilizes the copper-aluminum transition terminal for the transition, changing from copper-aluminum conductor contact to aluminum-aluminum contact and then copper-copper contact, thus avoiding the aforementioned defects and accidents. Tensile test and DC resistance test results show that the mechanical properties and conductivity of the connecting terminal 2 in this embodiment are superior to traditional terminals. Furthermore, field application data indicates that using the connecting terminal 2 in this embodiment effectively suppresses the heating and creep problems caused by direct copper-aluminum connection, significantly reducing line faults.

[0059] In one embodiment, a connecting terminal for a connecting wire is provided, wherein the connecting terminal in this embodiment is the connecting terminal 2 in any of the above embodiments.

[0060] In this embodiment, since there is a gap between the mounting port 222 of the connecting terminal 2 and the wire 1, the tail of the connecting terminal 2 does not directly contact the wire 1. This means that even if the connecting terminal 2 swings or bends relative to the wire, the tail of the connecting terminal 2 will not directly squeeze the wire. There will be no friction between the tail of the connecting terminal 2 and the wire 1, which can prevent fatigue breakage of the wire and improve the service life of the connecting wire.

[0061] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A connecting wire, characterized in that, It includes wires and connecting terminals, wherein one or both ends of the wires are connected to the connecting terminals; The connecting terminal is a conductive structure, comprising an external portion and a mounting portion. The external portion is used to connect to an external conductive structure. The mounting portion has a mounting hole with a mounting opening facing away from the external portion. One end of the wire passes through the mounting opening and is inserted into the mounting hole. A portion of the mounting portion is squeezed and deformed to contact the wire, thereby achieving a fixed connection and an electrical connection. There is a gap between the mounting opening and the wire.

2. The connecting wire as described in claim 1, characterized in that, The inner diameter of the mounting opening is larger than the inner diameter of the mounting hole.

3. The connecting wire as described in claim 2, characterized in that, The mounting hole is a tapered or trapezoidal hole, and the inner diameter of the mounting hole gradually decreases from the mounting opening inwards.

4. The connecting wire as described in claim 2, characterized in that, The mounting hole is a stepped hole, and the mounting hole includes at least a first mounting hole and a second mounting hole connected in series. The first mounting hole is closer to the mounting opening than the second mounting hole, and the inner diameter of the first mounting hole is larger than the inner diameter of the second mounting hole.

5. The connecting wire as described in claim 1, characterized in that, The edge of the mounting port is provided with an inner chamfer; and / or, the gap between the mounting port and the wire is 0.2-1.5mm.

6. The connecting wire as described in claim 1, characterized in that, The wire includes a conductive wire and an insulating layer. The insulating layer wraps around the outside of the conductive wire, and the end of the conductive wire protrudes from the insulating layer. The conductive wire extends into the mounting hole. A portion of the mounting part is squeezed and deformed to contact the conductive wire, thereby achieving a fixed connection and an electrical connection. The insulating layer extends to the mounting opening or into the mounting hole.

7. The connecting wire as described in claim 1, characterized in that, It also includes an insulating connecting sleeve, which includes a first connecting part and a second connecting part, the first connecting part and the second connecting part being a cylindrical structure that is interconnected; the first connecting part is sleeved on the outside of the mounting part, the second connecting part is sleeved on the outside of the wire, and the insulating connecting sleeve covers the gap between the mounting opening and the wire.

8. The connecting wire as described in claim 7, characterized in that, The insulating connecting sleeve is a flexible elastic structure, with the first connecting part bound to the outside of the mounting part and the second connecting part bound to the outside of the wire.

9. The connecting wire as described in any one of claims 1 to 8, characterized in that, The connecting terminal is made of copper-aluminum alloy.

10. A connecting terminal for a connecting wire, characterized in that, The connecting terminal is a conductive structure, comprising an external portion and a mounting portion. The external portion is used to connect to an external conductive structure. The mounting portion has a mounting hole with a mounting opening facing away from the external portion. A portion of the mounting portion is used for compression deformation to contact the wire inserted into the mounting hole, thereby achieving a fixed connection and an electrical connection. There is a gap between the mounting opening and the wire.

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