Terminal

Abstract

The terminal comprises a plugging part, a terminal main body and a connecting rod, the plugging part comprises an annular base body and a plurality of elastic arms extending from the opening end of the annular base body, the plurality of elastic arms surround the annular base body to form a plugging cavity together with the annular base body, the bottom wall of the annular base body is provided with a through hole, and the connecting rod comprises an anti-contact section, a clamping section and a screw rod. The terminal body comprises a fixing part and a wiring part, the end face of the fixing part is provided with internal threads, the screw rod is in threaded connection with the internal threads through the through hole, the clamping section abuts against the bottom wall of the annular base body so that the outer end face of the annular base body can be attached to and electrically connected with the end face of the fixing part, and the anti-contact section is located in the insertion cavity. According to the utility model, the terminal is divided into the plugging part and the terminal main body which are connected through the screw rod, any one of the plugging part and the terminal main body can be disassembled, maintained and replaced when being damaged, the problem that the terminal is completely replaced when being damaged is solved, the anti-contact section can prevent electric shock, the plugging part of the structure is made of copper or copper alloy, and the terminal main body is made of aluminum or aluminum alloy, so that the structure is simple and convenient. The weight and the cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, and more specifically, to a terminal. Background Art

[0002] With the rapid development of new energy electric vehicles, the use of terminals for electrical connection is increasing. The terminals used in charging guns and charging seats are mainly used to transmit electrical signals or conduct electricity. The terminals need to be plugged into the mating terminals to achieve electrical connection. During the repeated plugging and unplugging of the mating terminals, they are easily worn and affect the charging effect. The worn copper terminals are usually replaced as a whole due to the inconvenience of maintenance. The terminals are generally made of copper, which has good electrical and thermal conductivity and is widely used. However, copper resources are in short supply, copper costs are high, and copper terminals are heavy and cannot meet the current requirements for lightweight in the field of new energy vehicles.

[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 new technical solution for terminals to solve the problems that the terminals are easily worn out during repeated plugging and unplugging with matching terminals, thus affecting the charging effect, and the worn terminals are usually replaced as a whole due to the inconvenience of maintenance, as well as the cost and high quality of integrated copper terminals.

[0005] According to the utility model, a terminal is provided, one end of which is plug-connected with a mating terminal and the other end is connected with a wire, including a plug-in portion, a terminal body and a connecting rod, the plug-in portion includes a barrel-shaped annular base closed at one end and a plurality of elastic arms extending from the open end of the annular base, the plurality of elastic arms surround and together with the annular base form a plug-in cavity for plugging with the mating terminal, and a through hole is provided on the bottom wall of the annular base; the connecting rod includes an anti-touch section, a clamping section and a screw rod connected in sequence, the outer diameter of the clamping section is larger than the diameter of the through hole and the outer diameter of the screw rod; the terminal body includes a fixing portion and a wiring portion, the end face of the fixing portion is provided with an internal thread, the screw rod is screwed with the internal thread via the through hole, the clamping section abuts against the bottom wall of the annular base so that the outer end face of the annular base is attached to and electrically connected with the end face of the fixing portion, and the anti-touch section is located in the plug-in cavity.

[0006] Optionally, the axis of the connecting rod coincides with the axis of the plug-in portion.

[0007] Optionally, the plug-in portion is integrally formed by stamping and curling a plate-like material, and the terminal body is integrally formed by machining and / or cold heading.

[0008] Optionally, the plug-in portion is made of copper or copper alloy, the terminal body is made of aluminum or aluminum alloy, and a plating layer is provided at least on an end surface of the fixing portion.

[0009] Optionally, the plurality of elastic arms are evenly spaced along the circumference of the annular base, and the inner diameter of the plug-in cavity gradually decreases in the direction from the annular base to the free ends of the elastic arms.

[0010] Optionally, the end of the elastic arm is bent outwardly in a direction gradually away from the axis of the plug-in portion and surrounds to form a guide portion.

[0011] Optionally, an insulating layer is sleeved on the front end and at least part of the outer periphery of the anti-touch section, and a gap for inserting the mating terminal is reserved between the insulating layer and the plug-in cavity.

[0012] Optionally, a front end of the anti-contact segment is exposed outside the plug-in cavity.

[0013] Optionally, a circumferential groove is provided on the screw, a fixing hole penetrating the internal thread is provided on the side of the terminal body, a top screw is provided in the fixing hole, the end of the top screw extends into the internal thread and is partially inserted into the groove, thereby preventing the screw from loosening from the internal thread.

[0014] Optionally, at least one annular groove is provided on the circumference of the terminal body for fixing the terminal and / or installing a sealing ring.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model divides the integral copper terminal into a plug-in part and a terminal body, which are connected together by a screw. When the plug-in part and the terminal body are damaged, they can be easily disassembled, which is convenient for maintenance and replacement. It solves the problem that the integrated terminal is very easy to wear during repeated plugging and unplugging with the matching terminal, and the worn terminal is usually replaced as a whole due to the inconvenience of maintenance. It not only saves costs, but also increases the service life of the terminal.

[0017] 2. The connecting rod includes an anti-touch section, a clamping section and a screw rod which are connected in sequence. The anti-touch section is arranged in the plug-in cavity, and the front end is exposed outside the plug-in cavity, which can prevent fingers from accidentally extending into the plug-in cavity and causing electric shock.

[0018] 3. Currently, terminals are generally made of copper. Copper has good electrical and thermal conductivity and is widely used. However, copper resources are in short supply, copper costs are high, and copper terminals are heavy and cannot meet the current requirements for lightweight in the field of new energy vehicles. The present structure is changed to use copper or copper alloy plug-in parts and aluminum or aluminum alloy terminal bodies, which reduces weight while also reducing the manufacturing cost of the terminal. Moreover, the currently commonly used copper terminal is connected to the aluminum conductive part of the cable, and the copper terminal and the aluminum wire are directly connected and contacted to cause electrochemical corrosion. The present utility model uses the wiring part on the terminal body made of aluminum or aluminum alloy to connect with the aluminum or aluminum alloy conductive part of the cable, which solves the problem of electrochemical corrosion caused by the direct connection and contact between the traditional copper terminal and the aluminum wire, and improves the overall service life of the terminal.

[0019] 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

[0020] 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.

[0021] Figure 1 This is a schematic cross-sectional view of a terminal of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of a terminal of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the plug-in part of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the terminal body of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the connecting rod of the utility model;

[0026] Figure 6 The utility model is a schematic diagram of the structure of the terminal with a top screw.

[0027] The following are marked in the figure:

[0028] 1. Plug-in part; 11. Annular base; 111. Through hole; 12. Elastic arm; 121. Guide part; 2. Terminal body; 21. Fixing part; 211. Annular groove; 212. Internal thread; 22. Wiring part; 3. Connecting rod; 31. Anti-touch section; 32. Snap-in section; 33. Screw; 4. Top screw. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] According to the first aspect of the present utility model, Figure 1-Figure 6 As shown, a terminal is provided, one end of which is plug-connected with a mating terminal and the other end is connected with a wire, comprising a plug-in portion 1, a terminal body 2 and a connecting rod 3, wherein the plug-in portion 1 comprises a barrel-shaped annular base 11 closed at one end and a plurality of elastic arms 12 extending from the open end of the annular base 11, wherein the plurality of elastic arms 12 surround and form a plug-in cavity together with the annular base 11 for plugging with the mating terminal, and a through hole 111 is arranged on the bottom wall of the annular base 11; the connecting rod 3 comprises an anti-touch segment 31, a card segment 32 connected in sequence, and a card segment 33 connected in sequence. The connecting section 32 and the screw 33, the outer diameter of the clamping section 32 is larger than the diameter of the through hole 111 and the outer diameter of the screw 33; the terminal body 2 includes a fixing portion 21 and a wiring portion 22, the end face of the fixing portion 21 is provided with an internal thread 212, the screw 33 is screwed with the internal thread 212 via the through hole 111, the clamping section 32 abuts against the bottom wall of the annular base 11 so that the outer end face of the annular base 11 is attached to the end face of the fixing portion 21 and electrically connected, and the anti-touch section 31 is located in the plug-in cavity.

[0034] With the rapid development of new energy electric vehicles, the use of terminals for electrical connection is increasing. The terminals used in charging guns and charging stations are mainly used to transmit electrical signals or conduct electricity. The terminals need to be plugged into the mating terminals to achieve electrical connection. During the repeated plugging and unplugging process with the mating terminals, wear is very likely to occur, affecting the charging effect. The worn terminals are usually replaced as a whole due to the inconvenience of maintenance.

[0035] The utility model divides the integral terminal into a plug-in part 1 and a terminal body 2, and the two are connected together by a screw 33. When either of the parts is damaged, it can be easily disassembled to facilitate maintenance and replacement. This solves the problem that the integrated terminal is very likely to wear out during repeated plugging and unplugging with the mating terminal, thereby affecting the charging effect, and the worn terminal is usually replaced as a whole due to the inconvenience of maintenance. This not only saves costs, but also increases the service life of the terminal.

[0036] In some embodiments, Figure 1 As shown, the axis of the connecting rod 3 coincides with the axis of the plug-in portion 1 .

[0037] The axis of the connecting rod 3 coincides with the axis of the plug-in portion 1 , and does not interfere with the mating terminal during insertion of the mating terminal into the plug-in cavity, thereby facilitating smooth insertion of the mating terminal into the plug-in cavity and electrical connection with the plug-in portion 1 .

[0038] In some embodiments, the plug-in portion 1 is formed by integrally stamping and curling a plate-like material, and the terminal body is integrally formed by machining and / or cold heading processes.

[0039] In this embodiment, the plug-in portion 1 can be formed by integrally stamping and curling the material, and the terminal body 2 can be formed by machining, or the plug-in portion 1 can be formed by integrally stamping and curling the material, and the terminal body 2 can be formed by cold heading.

[0040] In some embodiments, the plug-in portion 1 is made of copper or copper alloy, the terminal body 2 is made of aluminum or aluminum alloy, and a plating layer is provided at least on the end surface of the fixing portion 21 .

[0041] At present, terminals are often made of copper. Copper has good electrical conductivity, thermal conductivity and plasticity and is widely used. However, copper resources are in short supply, copper costs are high, and copper terminals are heavy and cannot meet the current requirements for lightweight in the field of new energy vehicles. The utility model changes the one-piece copper terminal into a plug-in part 1 made of copper or copper alloy and a terminal body 2 made of aluminum or aluminum alloy, thereby reducing the use of copper material, thereby reducing the manufacturing cost of the terminal, and reducing the overall weight of the terminal to achieve lightweight.

[0042] The copper terminal commonly used at present is connected with the aluminum conductive part of the cable. The copper terminal and the aluminum wire are directly connected and contacted to cause electrochemical corrosion. The structure adopts the connection part 22 on the terminal body 2 made of aluminum or aluminum alloy to connect with the aluminum or aluminum alloy conductive part of the cable, which solves the problem of electrochemical corrosion caused by direct connection and contact between the traditional copper terminal and the aluminum wire, and improves the overall service life of the terminal;

[0043] Furthermore, a plating layer is provided on the end surface of the fixing portion 21 , so as to increase the corrosion resistance and wear resistance of the fixing portion 21 and extend the service life of the terminal body 2 .

[0044] In some embodiments, Figure 2-Figure 3 As shown, the plurality of elastic arms 12 are evenly arranged along the circumference of the annular base 11 , and the inner diameter of the plug-in cavity gradually decreases along the direction from the annular base 11 to the free end of the elastic arm 12 .

[0045] The design of this structure is to better clamp the mating terminals and ensure good electrical connectivity.

[0046] In some embodiments, Figure 2 As shown, the end of the elastic arm 12 is bent outwardly in a direction gradually away from the axis of the plug-in portion 1 and surrounds to form a guide portion 121.

[0047] The guide portion 121 can guide the mating terminal to be inserted into the plug-in cavity.

[0048] In some embodiments, Figure 1-Figure 2 As shown, an insulating layer is sleeved on the front end and at least part of the periphery of the anti-touch segment 31, and a gap for inserting the mating terminal is reserved between the insulating layer and the plug-in cavity.

[0049] An insulating layer is provided on the front end and at least part of the periphery of the anti-touch segment 31. The provision of the insulating layer can relax the selection of the material of the anti-touch segment 31. For example, the front end and at least part of the periphery of the anti-touch segment 31 made of conductive metal or other conductive materials and provided with an insulating layer can play a role in preventing electric shock. A gap is left between the anti-touch segment 31 and the plug-in cavity for inserting the mating terminal, which facilitates the insertion of the mating terminal and prevents interference.

[0050] In some embodiments, Figure 1-Figure 2 As shown, the front end of the anti-contact segment 31 is exposed outside the plug-in cavity.

[0051] This design can prevent fingers from accidentally entering the plug cavity and causing electric shock.

[0052] In some embodiments, Figure 6 As shown, a circumferential groove is provided on the screw rod 33, a fixing hole penetrating the internal thread is provided on the side of the terminal body 2, a top screw 4 is provided in the fixing hole, and the end of the top screw 4 extends into the internal thread and is partially inserted into the groove, thereby preventing the screw rod 33 from loosening from the internal thread.

[0053] The setting of the top screw 4 can strengthen the connection between the screw rod 33 and the internal thread, prevent the screw rod 33 from loosening from the internal thread, and thus ensure the stable connection between the plug-in part 1 and the terminal body 2, ensuring the safety of use when using electricity.

[0054] In some embodiments, Figure 1As shown, at least one annular groove 211 is provided on the circumference of the terminal body 2 for fixing the terminal and / or installing a sealing ring.

[0055] The annular groove 211 can be clamped with the fixing device to fix the terminal, or a sealing ring can be installed in the annular groove 211 to seal the gap between the terminal and the mounting device to prevent water vapor and impurities from entering therein and causing electrical risks, or there are two or more annular grooves 211, one of which is used to clamp with the fixing device to fix the terminal, and the others are used to place sealing rings for sealing or other functions.

[0056] 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, one end of which is plugged into a mating terminal and the other end is connected to a wire, characterized in that: It includes a plug-in part, a terminal body and a connecting rod, The plug-in portion includes a barrel-shaped annular base with one end closed and a plurality of elastic arms extending from the open end of the annular base, the plurality of elastic arms surround and together with the annular base form an inserting cavity for plugging with the mating terminal, and a through hole is provided on the bottom wall of the annular base; The connecting rod comprises an anti-touch section, a clamping section and a screw rod which are connected in sequence, and the outer diameter of the clamping section is larger than the diameter of the through hole and the outer diameter of the screw rod; The terminal body includes a fixing part and a wiring part, the end face of the fixing part is provided with an internal thread, the screw is threadedly connected with the internal thread via the through hole, the clamping section abuts against the bottom wall of the annular base so that the outer end face of the annular base is attached to and electrically connected with the end face of the fixing part, and the anti-touch section is located in the plug-in cavity.

2. A terminal according to claim 1, characterized in that: The axis of the connecting rod coincides with the axis of the plug-in portion.

3. A terminal according to claim 1, characterized in that: The plug-in portion is integrally formed by stamping and curling a plate-like material, and the terminal body is integrally formed by machining and / or cold heading.

4. A terminal according to claim 1, characterized in that: The plug-in portion is made of copper or copper alloy, the terminal body is made of aluminum or aluminum alloy, and a plating layer is provided at least on the end surface of the fixing portion.

5. A terminal according to claim 1, characterized in that: The plurality of elastic arms are evenly arranged along the circumference of the annular base, and the inner diameter of the plug-in cavity gradually decreases along the direction from the annular base to the free ends of the elastic arms.

6. A terminal according to claim 1, characterized in that: The end of the elastic arm is bent outwards in a direction gradually away from the axis of the plug-in portion and surrounds to form a guide portion.

7. A terminal according to claim 1, characterized in that: An insulating layer is sleeved on the front end and at least part of the outer periphery of the anti-touch section, and a gap for inserting the mating terminal is reserved between the insulating layer and the plug-in cavity.

8. A terminal according to claim 1, characterized in that: The front end of the anti-touch segment is exposed outside the plug-in cavity.

9. A terminal according to claim 1, characterized in that: A circumferential groove is arranged on the screw rod, a fixing hole penetrating the internal thread is arranged on the side of the terminal body, a top screw is arranged in the fixing hole, the end of the top screw extends into the internal thread and is partially inserted into the groove, thereby preventing the screw rod from loosening from the internal thread.

10. A terminal according to claim 1, characterized in that: At least one annular groove is arranged on the circumference of the terminal body for fixing the terminal and / or installing a sealing ring.

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