Conductive structure for cable clamp and cable clamp

Abstract

The utility model discloses a conductive structure used for a cable clamp and the cable clamp, the conductive structure used for the cable clamp comprises a first conductive clamp head and a cable body, the first conductive clamp head comprises a clamping part and a welding part, the cable body comprises an insulating layer and a plurality of strands of wire cores arranged in the insulating layer, and the welding part is arranged in the insulating layer. The end portion of the wire core extends to the outside of the insulating layer and forms a square pressing portion, the square pressing portion is welded on the welding portion through ultrasonic waves, and the clamping portion is arranged to be far away from the cable body. According to the utility model, the conductive loop in the cable clamp is improved, and the end part of the cable core and the first conductive clamp head are fused into a whole through ultrasonic welding, so that the conductivity and mechanical property between the cable core and the first conductive clamp head are improved, and the reliability of electric connection between the cable core and the first conductive clamp head is ensured for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency starting of road vehicles, in particular to a conductive structure for a cable clamp and a cable clamp. Background Art

[0002] The cable clamp is a clamp used to connect the car to the power source when jumping or charging the car. When using it, different clamps should be connected to the positive and negative poles of the power source and the car battery respectively.

[0003] The traditional battery cable includes a cable and a cable clamp arranged at both ends of the cable. The cable clamp is provided with a conductive clamp. When the cable clamp is connected to the positive or negative pole, a complete current loop is formed. The parts that generate resistance in the current loop include: the conductive clamp itself, the cable itself, the connection between the conductive clamp and the cable, and the connection between the conductive clamp and the pole. For the prior art, the resistance generated by the connection between the conductive clamp and the cable cannot be ignored in the current loop, because the connection between the existing cable and the conductive clamp is to buckle the wire core in the cable on the conductive clamp by cold stamping, and such a connection method makes the electrical connection between the wire core and the conductive clamp insufficient, and the gap between the wire core and the conductive clamp is easily oxidized, especially after long-term non-use, resulting in a larger resistance value at the connection, resulting in a larger voltage drop exceeding the standard, and generating considerable heat at the same time; in order to compensate for the voltage drop caused by the resistance here, the manufacturer needs to increase the conductivity of the conductive clamp itself or the cable itself, which will greatly increase the production cost of the cable clamp and reduce its competitiveness in the market. Utility Model Content

[0004] In order to solve the above problems, the technical solution provided by the utility model is:

[0005] A conductive structure for a cable clamp comprises a first conductive clamp and a cable body, wherein the first conductive clamp comprises a clamping portion and a welding portion, the cable body comprises an insulating layer and a plurality of wire cores arranged in the insulating layer, the ends of the wire cores extend to the outside of the insulating layer and form a pressing portion, the pressing portion is ultrasonically welded to the welding portion, and the clamping portion is arranged away from the cable body.

[0006] The utility model is further configured such that a front clamping plate is provided on a side of the clamping portion facing the welding portion, and side clamping plates are provided on both sides of the clamping portion, and the front clamping plate and the side clamping plates are both bent relative to the clamping portion.

[0007] The utility model is further configured such that a first arcuate concave edge is provided on a side of the front clamping plate away from the clamping portion, and a second arcuate concave edge is provided on a side of the side clamping plate away from the clamping portion, the second arcuate concave edges on both sides are arranged opposite to each other, and a distance from the first arcuate concave edge to the clamping portion is greater than a distance from the second arcuate concave edge to the clamping portion.

[0008] The utility model is further configured such that a first arcuate concave edge is provided on a side of the front clamping plate away from the clamping portion, a second arcuate concave edge is provided on a side of the side clamping plate away from the clamping portion, both ends of the second arcuate concave edge are provided with bent ends, the bent ends are bent outwardly relative to the side clamping plate, the second arcuate concave edges on both sides are arranged opposite to each other, the bent ends on both sides are arranged opposite to each other, and the distance from the bent end close to the front clamping plate to the clamping portion is greater than the distance from the bent end away from the front clamping plate to the clamping portion.

[0009] The utility model is further configured such that the width of the square pressing portion is not greater than the width of the welding portion.

[0010] The utility model is further configured that the first conductive clamp is integrally formed.

[0011] The utility model is further configured that the first conductive clamp and the wire core are made of aluminum or copper.

[0012] A cable clamp comprises the above-mentioned conductive structure, and also comprises a first clamp body and a second clamp body, wherein the first clamp body and the second clamp body are connected by a rotating shaft, a torsion spring is arranged on the rotating shaft, the first clamp body comprises a first gripping portion and a first groove, the second clamp body comprises a second gripping portion and a second groove, the two ends of the torsion spring respectively abut against the inner wall of the first gripping portion and the inner wall of the second gripping portion, the first conductive clamp is arranged in the first groove, part of the cable body is connected in the first clamp body, a second conductive clamp is arranged in the second groove, and the first conductive clamp and the second conductive clamp are arranged opposite to each other.

[0013] The utility model is further configured such that the second conductive clamp includes a fixing portion, and the fixing portion is bent along the side to form a front positioning plate and a side positioning plate, the front positioning plate is provided with a third arc-shaped concave edge on the side away from the fixing portion, and the side positioning plate is provided with a fourth arc-shaped concave edge on the side away from the fixing portion.

[0014] The utility model is further configured such that a first positioning column is provided in the first groove, a first positioning hole is provided on the clamping portion, the first positioning column is connected in the first positioning hole, a second positioning column is provided in the second groove, a second positioning hole is provided on the fixing portion, and the second positioning column is connected in the second positioning hole.

[0015] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0016] The technical solution is to improve the conductive circuit in the cable clamp, press the multiple cores in the cable into a square portion, reserve a welding portion on the first conductive clamp, and fuse the end of the cable core and the first conductive clamp into one by ultrasonic welding, thereby improving the conductive performance and mechanical properties between the cable core and the first conductive clamp, reducing the contact resistance between the first conductive clamp and the core, improving the connection strength between the first conductive clamp and the core, and ensuring the reliability of the electrical connection between the cable core and the first conductive clamp for a long time.

[0017] On the other hand, after reducing the contact resistance at the connection between the cable core and the first conductive clamp, the resistance reduction improvements are made at four locations of the battery cable current loop. Therefore, the square number of the cores can be appropriately reduced within the range that the battery cable can pass the voltage drop test, so as to reduce the overall production cost of the battery cable and make the product more competitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of a conductive structure for a cable clamp according to an embodiment of the utility model.

[0019] Figure 2 This is a three-dimensional diagram of the first conductive clamp according to an embodiment of the utility model.

[0020] Figure 3 This is a three-dimensional diagram of a conductive structure for a cable clamp according to another embodiment of the utility model.

[0021] Figure 4 This is another three-dimensional diagram of the first conductive clamp according to an embodiment of the present utility model.

[0022] Figure 5 This is a three-dimensional diagram of a cable clamp according to an embodiment of the utility model.

[0023] Figure 6 This is an exploded view of the cable clamp according to an embodiment of the utility model.

[0024] Figure 7 This is a cross-sectional view of a cable clamp according to an embodiment of the utility model.

[0025] Figure 8 This is a three-dimensional diagram of the second conductive clamp according to an embodiment of the utility model. DETAILED DESCRIPTION

[0026] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0029] Example 1

[0030] Combined with Figure 1 To Attachment Figure 4 The technical solution of the utility model is a conductive structure for a cable clamp, comprising a first conductive clamp 1 and a cable body 2, wherein the first conductive clamp 1 comprises a clamping portion 11 and a welding portion 12, the cable body 2 comprises an insulating layer 21 and a plurality of wire cores 22 arranged in the insulating layer 21, the ends of the wire cores 22 extend to the outside of the insulating layer 21 and form a pressing portion 23, the pressing portion 23 is ultrasonically welded on the welding portion 12, and the clamping portion 11 is arranged away from the cable body 2.

[0031] In the above embodiment, the conductive circuit in the cable clamp is improved, the multiple strands of the core in the cable are pressed into a square portion, and a welding portion is reserved on the first conductive clamp, and the end of the cable core is fused with the first conductive clamp by ultrasonic welding, thereby improving the conductivity and mechanical properties between the cable core and the first conductive clamp, reducing the contact resistance between the first conductive clamp and the core, improving the connection strength between the first conductive clamp and the core, and ensuring the reliability of the electrical connection between the cable core and the first conductive clamp for a long time. Taking the 350A constant current test of the cable clamp as an example, the voltage drop can be reduced by about 0.1V at each location.

[0032] In this embodiment, a front clamping plate 13 is provided on the side of the clamping portion 11 facing the welding portion 12, and side clamping plates 14 are provided on both sides of the clamping portion 11. The front clamping plate 13 and the side clamping plates 14 are both bent relative to the clamping portion 11.

[0033] In order to adapt to cables of different specifications, the first conductive clamp 1 has the following two structures to ensure that when the vertical clamp and the horizontal clamp are used, the first conductive clamp 1 can still have a large contact surface connection with the battery pole to ensure the reliability of the electrical connection.

[0034] In this embodiment, as shown in the attached Figure 2As shown, the front clamping plate 13 is provided with a first arc-shaped concave edge 131 on the side away from the clamping portion 11, and the side clamping plate 14 is provided with a second arc-shaped concave edge 141 on the side away from the clamping portion, and the second arc-shaped concave edges 141 on both sides are arranged opposite to each other, and the distance from the first arc-shaped concave edge 131 to the clamping portion is greater than the distance from the second arc-shaped concave edge 141 to the clamping portion.

[0035] In this embodiment, as shown in the attached Figure 4 As shown, a first arc-shaped concave edge 132 is provided on a side of the front clamping plate 13 away from the clamping portion 11, a second arc-shaped concave edge 142 is provided on a side of the side clamping plate 14 away from the clamping portion 11, and bent ends 143 are provided at both ends of the second arc-shaped concave edge 142, and the bent ends 143 are bent outward relative to the side clamping plate 14, and the second arc-shaped concave edges 142 on both sides are arranged opposite to each other, and the bent ends 143 on both sides are arranged opposite to each other, and the distance from the bent end 143 close to the front clamping plate 13 to the clamping portion 11 is greater than the distance from the bent end 143 away from the front clamping plate 13 to the clamping portion 11; the above arrangement is to form a larger contact area when the cable clamp is vertically clamped on the pole.

[0036] In this embodiment, the width of the squared portion 23 is not greater than the width of the welding portion 12 , so as to ensure that the first conductive clamp 1 provides a sufficiently large bearing welding surface for the squared portion 23 of the wire core 22 .

[0037] In this embodiment, the first conductive clamp 1 is integrally formed, which can reduce the resistance of the clamp itself.

[0038] In this embodiment, the first conductive clamp 1 and the wire core 22 are made of aluminum or copper to facilitate welding in an ultrasonic welding instrument.

[0039] The conductive structure of the cable clamp of the utility model reduces the connection resistance at the connection point between the cable core and the first conductive clamp, and improves the resistance reduction at four positions of the battery cable current loop. Therefore, the square number of the core can be appropriately reduced within the range that the battery cable can pass the voltage drop test, so as to reduce the overall production cost of the battery cable and make the product more competitive.

[0040] Example 2

[0041] Combined with Figures 1 to 8The technical solution of the utility model is a cable clamp, including the conductive structure described in Example 1, and also including a first clamp body 3 and a second clamp body 4, the first clamp body 3 and the second clamp body 5 are connected by a rotating shaft 5, and a torsion spring 6 is arranged on the rotating shaft 5, the first clamp body 3 includes a first gripping portion 31 and a first groove 32, the second clamp body 4 includes a second gripping portion 41 and a second groove 42, the two ends of the torsion spring 6 are respectively against the inner wall of the first gripping portion 31 and the inner wall of the second gripping portion 41, the first conductive clamp 1 is arranged in the first groove 32, part of the cable body 2 is connected in the first clamp body 3, and a second conductive clamp 7 is arranged in the second groove 42, and the first conductive clamp 1 and the second conductive clamp 7 are arranged opposite to each other.

[0042] In this embodiment, the second conductive clamp 7 includes a fixing portion 71, and the fixing portion 71 is bent along the side to form a front positioning plate 72 and a side positioning plate 73. The front positioning plate 72 is provided with a third arc-shaped concave edge 721 on the side away from the fixing portion 71, and the side positioning plate 73 is provided with a fourth arc-shaped concave edge 731 on the side away from the fixing portion 71.

[0043] In the above embodiment, the third arc-shaped concave edge 721 is disposed opposite to the first arc-shaped concave edge 131 , and the fourth arc-shaped concave edge 731 is disposed opposite to the second arc-shaped concave edge 142 , so as to be suitable for vertical clamping and horizontal clamping of the cable clamp.

[0044] In this embodiment, a first positioning column 33 is provided in the first groove 32, a first positioning hole 111 is provided on the clamping portion 11, the first positioning column 33 is connected to the first positioning hole 111, a second positioning column 43 is provided in the second groove 42, a second positioning hole 711 is provided on the fixing portion 71, and the second positioning column 43 is connected to the second positioning hole 711; so that the first conductive clamp 1 and the second conductive clamp 7 are stably fixed on the first clamp body 3 and the second clamp body 4 respectively.

[0045] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A conductive structure for a cable clamp, characterized in that: It includes a first conductive clamp and a cable body, the first conductive clamp includes a clamping portion and a welding portion, the cable body includes an insulating layer and a plurality of wire cores arranged in the insulating layer, the ends of the wire cores extend to the outside of the insulating layer and form a square pressing portion, the square pressing portion is ultrasonically welded to the welding portion, and the clamping portion is arranged away from the cable body.

2. A conductive structure for a cable clamp according to claim 1, characterized in that: A front clamping plate is provided on one side of the clamping portion facing the welding portion, and side clamping plates are provided on both sides of the clamping portion. Both the front clamping plate and the side clamping plates are bent relative to the clamping portion.

3. A conductive structure for a cable clamp according to claim 2, characterized in that: The front clamping plate is provided with a first arc-shaped concave edge on the side away from the clamping portion, and the side clamping plate is provided with a second arc-shaped concave edge on the side away from the clamping portion. The second arc-shaped concave edges on both sides are arranged opposite to each other, and the distance from the first arc-shaped concave edge to the clamping portion is greater than the distance from the second arc-shaped concave edge to the clamping portion.

4. A conductive structure for a cable clamp according to claim 2, characterized in that: A first arc-shaped concave edge is provided on the side of the front clamping plate away from the clamping portion, and a second arc-shaped concave edge is provided on the side of the side clamping plate away from the clamping portion. Both ends of the second arc-shaped concave edge are provided with bent ends, and the bent ends are bent outward relative to the side clamping plate. The second arc-shaped concave edges on both sides are arranged opposite to each other, and the bent ends on both sides are arranged opposite to each other. The distance from the bent end close to the front clamping plate to the clamping portion is greater than the distance from the bent end away from the front clamping plate to the clamping portion.

5. A conductive structure for a cable clamp according to any one of claims 1 to 4, characterized in that: The width of the square pressing portion is not greater than the width of the welding portion.

6. A conductive structure for a cable clamp according to any one of claims 1 to 4, characterized in that: The first conductive clamp is integrally formed.

7. A conductive structure for a cable clamp according to any one of claims 1 to 4, characterized in that: The first conductive clamp and the wire core are made of aluminum or copper.

8. A cable clamp, characterized in that: The conductive structure comprises the conductive structure as described in any one of claims 1 to 7, and further comprises a first clamp and a second clamp, the first clamp and the second clamp are connected by a rotating shaft, a torsion spring is arranged on the rotating shaft, the first clamp comprises a first gripping portion and a first groove, the second clamp comprises a second gripping portion and a second groove, the two ends of the torsion spring respectively abut against the inner wall of the first gripping portion and the inner wall of the second gripping portion, the first conductive clamp is arranged in the first groove, part of the cable body is connected in the first clamp, a second conductive clamp is arranged in the second groove, and the first conductive clamp and the second conductive clamp are arranged opposite to each other.

9. A cable clamp according to claim 8, characterized in that: The second conductive clamp includes a fixing portion, which is bent along the side to form a front positioning plate and a side positioning plate. The front positioning plate is provided with a third arc-shaped concave edge on the side away from the fixing portion, and the side positioning plate is provided with a fourth arc-shaped concave edge on the side away from the fixing portion.

10. A cable clamp according to claim 9, characterized in that: A first positioning column is provided in the first groove, a first positioning hole is provided on the clamping portion, the first positioning column is connected to the first positioning hole, a second positioning column is provided in the second groove, a second positioning hole is provided on the fixing portion, and the second positioning column is connected to the second positioning hole.

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