Terminal and conductive system

Abstract

The utility model provides a terminal and a conductive system, comprising a butt joint part used for being in butt joint with an external terminal, a connecting part extending from the butt joint part, and a clamping part connected with the connecting part, the clamping part comprises elastic clamping arms arranged oppositely, a clamping space is formed between the two elastic clamping arms, and the elastic clamping arms are arranged in the clamping space. Each elastic clamping arm comprises a gradually-shrinking section, a clamping section and a guiding section which are formed by sequentially extending from the end close to the connecting part to the free end close to the elastic clamping arm, and the distance between the two opposite clamping sections is gradually increased from the shortest distance to the two sides. The clamping part of the terminal provided by the utility model is provided with the elastic clamping arms which are oppositely arranged, the distance between the clamping sections on the two opposite elastic clamping arms is the shortest, and the conductive part of the cable can be clamped at the position with the shortest distance and is connected or indirectly electrically connected with the conductive part, so that the cable does not need to be preassembled in the terminal in advance, and poor contact can be found in time; the structure facilitates the assembly of the cable, reduces the processing time, reduces the processing cost, and is more reliable in connection mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical transmission, and particularly relates to a terminal and a conductive system. Background Art

[0002] In electrical connections, cables are often used to conduct current and transmit signals. The terminals of the cables are equipped with plug-in terminals for connecting to their conductive parts. Common connection forms for terminals and cables of existing new energy vehicles include welding and crimping. This type of connection is not easy to assemble, requires pre-threading of cables, has high resistance, and is not firm and prone to unwelding. These problems are not easy to be discovered during continuous mass production and are likely to occur at the user end, causing high temperatures during the charging process of new energy vehicles and the risk of spontaneous combustion.

[0003] Therefore, a new solution is urgently needed in the prior art to solve the above problems. Utility Model Content

[0004] One purpose of the utility model is to provide a terminal and a conductive system to solve the problems of difficult assembly, need for pre-threading of cables, large resistance at the connection, loose connection and easy to open welding when the conductive part of the current cable is connected to the terminal.

[0005] According to the first aspect of the utility model, a terminal is provided, comprising a docking portion for docking with an external terminal, a connecting portion extending from the docking portion, and a clamping portion connected to the connecting portion, the clamping portion comprising elastic clamping arms arranged opposite to each other, a clamping space being formed between two elastic clamping arms, each of the elastic clamping arms comprising a tapered section, a clamping section and a guide section extending in sequence from one end close to the connecting portion to a free end close to the elastic clamping arm, and the spacing between the two opposite clamping sections gradually increases from the shortest spacing to both sides.

[0006] Optionally, a chamfer is provided at a connection between the tapered section and the connecting portion.

[0007] Optionally, a coating is provided at least on the inner surface of the clamping section.

[0008] Optionally, the elastic clamping arm is formed by bending a spring sheet with uniform thickness.

[0009] Optionally, the elastic clamping arm is connected to the connecting portion by welding.

[0010] Optionally, the elastic clamping arm, the connecting portion and the docking portion that are arranged opposite to each other are integrally formed by stamping a plate.

[0011] Optionally, the clamping space is formed after machining, and the outer contour line of the clamping portion is a straight line segment.

[0012] Optionally, the free ends of the opposite guide sections are both provided with rounded corners.

[0013] The utility model also provides a conductive system, comprising a conductor, a cable and any one of the terminals as described above, wherein at least a portion of the conductor is flat in shape, the flat portion of the conductor is electrically connected to the cable, and the conductor extends into the clamping space and is clamped by the two clamping sections to achieve electrical connection between the cable and the terminal.

[0014] Optionally, the conductor is integrally formed with the conductive portion of the cable.

[0015] Optionally, the minimum spacing between two clamping segments is 0.66-0.8 times the thickness of the portion of the conductor inserted into the clamping space.

[0016] The beneficial effects of the utility model are:

[0017] The clamping part of the terminal provided by the utility model has elastic clamping arms arranged relatively to each other, a clamping space is formed between the two relatively elastic clamping arms, the elastic clamping arms have a tapered section, a clamping section and a guide section connected in sequence, the relatively clamping sections have the shortest spacing, the conductive part of the cable extends into the clamping space, the conductive part of the cable is clamped at the shortest spacing between the relatively clamping sections and connected to it or indirectly electrically connected thereto, the traditional terminal and cable connection method is changed, the cable assembly is convenient, the cable does not need to be pre-installed in the clamping part of the terminal in advance, and poor contact can be discovered in time, the processing time is reduced, the processing cost is reduced, and the connection method is more reliable.

[0018] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of a terminal of the utility model;

[0021] Figure 2 It is a structural schematic diagram of another embodiment of a terminal of the utility model;

[0022] Figure 3 This is a schematic diagram of the connection structure of the clamping part, the conductor and the cable of the utility model;

[0023] Figure 4 It is a schematic diagram of the connection structure of another embodiment of the clamping part, the conductor and the cable of the utility model.

[0024] The following are marked in the figure:

[0025] 11. Docking portion; 12. Connecting portion; 13. Elastic clamping arm; 14. Clamping space; 131. Outer contour line; 132. Chamfered corner; 133. Guide section; 134. Clamping section; 135. Tapered section; 14. Cable; 15. Conductor. DETAILED DESCRIPTION

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0027] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0028] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0029] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0030] A terminal, such as Figure 1-Figure 4 As shown, it includes a docking portion 11 for docking with an external terminal, a connecting portion 12 extending from the docking portion 11, and a clamping portion connected to the connecting portion 12, the clamping portion includes elastic clamping arms 13 arranged opposite to each other, a clamping space 14 is formed between the two elastic clamping arms 13, each of the elastic clamping arms 13 includes a tapered section 135, a clamping section 134 and a guide section 133 extending in sequence from one end close to the connecting portion 12 to the free end close to the elastic clamping arm 13, and the distance between the two opposite clamping sections 134 gradually increases from the shortest distance to both sides.

[0031] In electrical connections, cables 14 are often used to conduct current and transmit signals. The terminals of cables 14 are equipped with plug-in terminals for connecting to their conductive parts. Common connection methods between the terminals and cables 14 of existing new energy vehicles include welding and crimping. Such connections are not easy to assemble, require pre-threading of the cables 14, have high resistance, and are not firm and prone to unwelding. These problems are not easy to be discovered during continuous mass production and are prone to occur at the user end, causing high temperatures during charging of new energy vehicles and the risk of spontaneous combustion.

[0032] The clamping portion of the terminal provided by the utility model has elastic clamping arms 13 arranged opposite to each other, and a clamping space 14 is formed between the two relatively elastic clamping arms 13. The elastic clamping arms 13 have a tapered section 135, a clamping section 134 and a guide section 133 connected in sequence. The relatively clamping sections 134 have the shortest spacing. The conductive part of the cable 14 extends into the clamping space 14. The relatively clamping sections 134 clamp the conductive part of the cable 14 at the shortest spacing and are connected to it or indirectly electrically connected thereto, thereby changing the traditional connection method between the terminal and the cable 14, facilitating the assembly of the cable 14, and the cable 14 does not need to be pre-installed in the clamping portion of the terminal in advance. In addition, poor contact can be discovered in time, thereby reducing processing time and processing costs, and the connection method is more reliable.

[0033] In some embodiments, Figure 1 As shown, a chamfer 132 is provided at the connection between the tapered section 135 and the connecting portion 12 .

[0034] The rounded corner 132 is designed to prevent stress concentration at the connection between the tapered section 135 and the connecting portion 12 during the clamping process of the elastic clamping arm 13, thereby preventing the elastic clamping arm 13 from breaking at this location.

[0035] In some embodiments, a coating is provided on at least the inner surface of the clamping section 134 .

[0036] The purpose of providing the coating on the clamping section 134 is to coat the substrate with a metal coating, thereby changing the surface properties of the substrate, enhancing its corrosion resistance and hardness, preventing wear, and improving conductivity, lubricity, heat resistance, and surface aesthetics.

[0037] In some embodiments, Figure 2 As shown, the elastic clamping arm 13 is formed by bending a spring sheet with uniform thickness.

[0038] The plate material used as the elastic clamping arm 13 is an elastic sheet, which is bent to form the elastic clamping arm 13 .

[0039] In some embodiments, Figure 2 As shown, the elastic clamping arm 13 is connected to the connecting portion 12 by welding.

[0040] The elastic clamping arm 13 can be a separate plate of equal thickness that is formed by stamping and bending and then welded to the connecting portion 12 .

[0041] In some embodiments, Figure 2 As shown, the elastic clamping arm 13, the connecting portion 12 and the docking portion 11 which are arranged opposite to each other are integrally formed by stamping of plate materials.

[0042] The elastic clamping arm 13, the docking portion 11 and the connecting portion 12 are formed by stamping the same plate material, so the overall structure is more stable and the production efficiency is high.

[0043] In some embodiments, Figure 1 As shown, the clamping space 14 is formed after machining, and the outer contour line 131 of the clamping portion is a straight line segment.

[0044] The clamping portion is integrally formed with the connecting portion 12, and the clamping portion is machined to form two opposite elastic clamping arms 13, each elastic clamping arm 13 includes a tapered section 135, a clamping section 134 and a guide section 133 extending sequentially from one end close to the connecting portion 12 to the free end thereof, the opposite elastic clamping arms 13 form a clamping space 14 for clamping and accommodating the conductive member 15, and the outer contour of the clamping portion does not need to be processed so it is a straight line segment.

[0045] In some embodiments, Figure 1 As shown, the free ends of the opposite guide sections 133 are both provided with rounded corners 132 .

[0046] The rounded corner 132 provided at the free end can guide the conductor 15 to extend into the clamping space 14 , and can also prevent the free end of the guiding section 133 from scratching the conductor 15 .

[0047] The utility model also provides a conductive system, such as Figure 3-4 As shown, it includes a conductor 15, a cable 14 and a terminal as described above, wherein at least part of the conductor 15 is flat in shape, and the flat part of the conductor 15 is electrically connected to the cable 14, and the conductor 15 extends into the clamping space 14 and is clamped by the two clamping sections 134 to achieve electrical connection between the cable 14 and the terminal.

[0048] like Figure 3 As shown, the conductive part of the cable 14 is welded to a conductive sheet having at least a partial flat shape, and the flat portion of the conductive sheet extends into the clamping space 14 and is clamped by two clamping sections 134 to achieve electrical connection between the cable 14 and the clamping portion; or, the conductive part of the cable 14 is welded to a flat terminal, and the flat terminal extends into the clamping space 14 and is clamped by two clamping sections 134 to achieve electrical connection between the cable 14 and the clamping portion.

[0049] In some embodiments, Figure 4 As shown, the conductor 15 is integrally formed with the conductive part of the cable 14 .

[0050] The inner core of the cable 14 is a flat conductor. The cable 14 is stripped of its end insulation layer to expose the flat conductor. The flat conductor extends into the clamping space 14 and is clamped by two clamping sections 134 to achieve electrical connection between the cable 14 and the terminal.

[0051] In some embodiments, the minimum distance between two clamping segments 134 is 0.66-0.8 times the thickness of the portion of the conductor 15 inserted into the clamping space 14 .

[0052] When the minimum spacing between the clamping sections 134 is less than 0.66 times the thickness of the conductor 15 inserted into the clamping space 14, the conductor 15 cannot extend to the minimum spacing between the two clamping sections 134; when the minimum spacing between the two clamping sections 134 is greater than 0.8 times the thickness of the conductor 15 inserted into the clamping space 14, the conductor 15 extends to the minimum spacing between the two clamping sections 134, the clamping is unstable and the conductor 15 is easy to fall off. Only when the minimum spacing between the two clamping sections 134 is 0.66-0.8 times the thickness of the conductor 15 inserted into the clamping space 14, the conductor 15 can extend to the minimum spacing and is not easy to fall off, and the clamping part of the cable 14 and the terminal can be firmly connected. Therefore, the inventor chooses the minimum spacing between the two clamping sections 134 to be 0.66-0.8 times the thickness of the conductor 15 inserted into the clamping space 14.

[0053] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A terminal, characterized in that: The device comprises a docking portion for docking with an external terminal, a connecting portion extending from the docking portion, and a clamping portion connected to the connecting portion, wherein the clamping portion comprises elastic clamping arms arranged opposite to each other, and a clamping space is formed between the two elastic clamping arms. Each of the elastic clamping arms comprises a tapered section, a clamping section and a guide section extending sequentially from one end close to the connecting portion to a free end close to the elastic clamping arm, and the distance between the two opposite clamping sections gradually increases from the shortest distance to both sides.

2. A terminal according to claim 1, characterized in that: A chamfer is provided at a connection between the tapered section and the connection portion.

3. A terminal according to claim 1, characterized in that: A coating is provided at least on the inner surface of the clamping section.

4. A terminal according to claim 1, characterized in that: The elastic clamping arm is formed by bending a spring sheet with uniform thickness.

5. A terminal according to claim 4, characterized in that: The elastic clamping arm is connected to the connecting portion by welding.

6. A terminal according to claim 4, characterized in that: The elastic clamping arm, the connecting portion and the butt joint portion which are arranged opposite to each other are integrally formed by stamping a plate.

7. A terminal according to claim 1, characterized in that: The clamping space is formed after machining, and the outer contour line of the clamping portion is a straight line segment.

8. A terminal according to claim 7, characterized in that: The free ends of the opposite guide sections are both provided with rounded corners.

9. A conductive system, characterized in that: It comprises a conductor, a cable and a terminal according to any one of claims 1-8, wherein at least part of the conductor is flat in shape, the flat part of the conductor is electrically connected to the cable, and the conductor extends into the clamping space and is clamped by the two clamping sections to achieve electrical connection between the cable and the terminal.

10. A conductive system according to claim 9, characterized in that: The conductor is integrally formed with the conductive portion of the cable.

11. A conductive system according to claim 9, characterized in that: The minimum distance between the two clamping segments is 0.66-0.8 times the thickness of the portion of the conductor inserted into the clamping space.

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