Terminal

Abstract

One end of the terminal is used for being connected with a matched terminal in an inserted mode, the other end of the terminal is used for being connected with a cable, the terminal comprises an inserted connection portion and a transition portion, the inserted connection portion is made of tubular materials and comprises an inserted connection end and a closed end which are sequentially connected, the inserted connection end is provided with a through inserted connection cavity, and the closed end is used for closing one end of the inserted connection cavity; the transition part comprises a connecting part and a functional part which are connected in sequence, the functional part is configured to be flat and is used for connecting the cable, and the end part of the connecting part is fixedly connected with the closed end, so that the plugging part and the transition part are connected and electrically connected. According to the technical scheme, the plugging part of the terminal is made of the tubular material, the transition part is formed by stamping, and the plugging part and the transition part are fixedly connected, combined and sealed, so that the problem of high machining cost of the traditional terminal is solved, the terminal does not need an injection molding sealing structure, the terminal is provided with the closed end for closing one end of the plugging cavity, and the manufacturing cost of the terminal is 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] Due to the reduction of gasoline fuel resources and environmental protection reasons, more and more countries regard new energy vehicles as the future development direction of automobiles. The popularity of new energy vehicles is getting higher and higher, and the charging system for replenishing energy for new energy batteries is also developing faster and faster. At present, in the charging system, traditional charging terminals are formed by machining, with high costs and low production efficiency. In addition, an injection molding sealing structure needs to be added, increasing the overall manufacturing cost of the terminals.

[0003] Therefore, there is an urgent need for a new solution in the prior art to solve the above problems. Summary of the Utility Model

[0004] An object of the utility model is to provide a new technical solution for a terminal to solve the problems that traditional charging terminals are formed by machining, with high costs and low production efficiency, and an injection molding sealing structure needs to be added, increasing the overall manufacturing cost of the terminals.

[0005] According to the utility model, there is provided a terminal, one end of which is used for plugging into a mating terminal, and the other end is used for connecting a cable. The terminal includes a plugging portion and a transition portion. The plugging portion is made of a tubular material and includes a plugging end and a closed end connected in sequence. The plugging end has a through plugging cavity, and the closed end is used to close one end of the plugging cavity. The transition portion includes a connecting portion and a functional portion connected in sequence. The functional portion is configured to be flat and is used for connecting the cable. The end of the connecting portion is fixedly connected to the closed end to connect and electrically connect the plugging portion and the transition portion.

[0006] Optionally, the closed end is formed by extending one end of the plugging portion into the plugging cavity and being welded and closed.

[0007] Optionally, the closed end is a plate-like body, and the plate-like body at least partially closes one end of the plugging cavity and is welded to one end of the plugging cavity.

[0008] Optionally, the closed end is configured as a cylindrical body with one end open and the other end closed, and the cylindrical body is connected to one end of the plugging portion by plugging connection or snap connection or threaded connection or interference connection or riveting connection.

[0009] Optionally, the transition portion is integrally flat, and the end of the transition portion is attached to and welded to the closed end.

[0010] Optionally, the cross-section of the transition part is L-shaped. The connecting part and the functional part are connected by an arc-shaped transition part. The end of the connecting part abuts against the side of the closed end and is connected by welding.

[0011] Optionally, the cross-section of the transition part is L-shaped. The connecting part and the functional part are connected by an arc-shaped transition part. The closed end and the connecting part are integrally formed, and the closed end and the connecting part jointly close one end of the insertion cavity.

[0012] Optionally, a plating layer is provided at least on the end face where the free end of the closed end contacts the connecting part.

[0013] Optionally, it further includes a drum spring. An annular installation groove is provided in the insertion cavity. The drum spring is arranged in the annular installation groove. The two ends of the drum spring respectively abut against the two end faces in the axial direction of the annular installation groove to be limited in the annular installation groove. The drum spring is in the shape of a waist drum with larger diameters at both ends and a smaller diameter in the middle. The minimum inner diameter of the drum spring abuts against and is electrically connected to the outer wall of the mating terminal.

[0014] Optionally, sealing grooves and installation grooves are arranged at intervals on the outer wall of the insertion end.

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

[0016] The insertion part of this terminal is formed by processing a tubular material, and the transition part at the tail end is formed by stamping a plate. The two are fixedly connected and combined for sealing. The flat functional part of the transition part is suitable for connecting large cross-section cables. Compared with ordinary charging terminals, the batch processing cost of this terminal is low, solving the problems of high cost and long processing time of round bar machining. The insertion end of the insertion part has a through insertion cavity, and the closed end of the insertion part is used to close one end of the insertion cavity, playing a role in sealing the terminal, and solving the problem that the inner cavity of traditional stamping terminals needs to be injected with glue for sealing.

[0017] Other features and advantages of the present utility model will become clear through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0019] Figure 1 It is a schematic structural diagram of the connection between the end of the connecting part and the side of the closed end of the L-shaped cross-section transition part of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of the closed end of the present utility model extending into the insertion cavity at one end of the insertion part and being welded and closed;

[0021] Figure 3 It is a schematic structural view of an embodiment in which the end of the flat transition part of the present utility model is attached to and welded to the closed end;

[0022] Figure 4 It is a schematic structural view of another embodiment in which the end of the flat transition part of the present utility model is attached to and welded to the closed end;

[0023] Figure 5 It is a schematic structural view of still another embodiment in which the end of the flat transition part of the present utility model is attached to and welded to the closed end;

[0024] Figure 6 It is a schematic structural view of an embodiment in which the connecting part of the transition part with an L-shaped cross-section of the present utility model is integrally formed with the closed end to jointly close one end of the insertion cavity;

[0025] Figure 7 It is a cross-sectional view showing the installation of the drum spring of a terminal of the present utility model and the mating terminal.

[0026] The markings in the figure are as follows:

[0027] 10. Insertion part; 11. Insertion end; 111. Insertion cavity; 112. Annular installation groove; 113. Sealing groove; 114. Installation groove; 12. Closed end; 20. Transition part; 21. Connecting part; 22. Functional part; 23. Arc transition part; 30. Drum spring; 40. Mating terminal. Detailed implementation manners

[0028] Now, various exemplary embodiments of the present utility model will 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 values set forth in these embodiments do not limit the scope of the present utility model.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present utility model or its application or use.

[0030] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the description.

[0031] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0032] According to a first aspect of the present utility model, a terminal is provided, as Figures 1-7As shown, one end is used for plugging into the mating terminal 40, and the other end is used for connecting a cable. It includes a plugging portion 10 and a transition portion 20. The plugging portion 10 is made of tubular material and includes a plugging end 11 and a closed end 12 connected in sequence. The plugging end 11 has a through plugging cavity 111, and the closed end 12 is used to close one end of the plugging cavity 111. The transition portion 20 includes a connecting portion 21 and a functional portion 22 connected in sequence. The functional portion 22 is configured to be flat and is used for connecting the cable. The end of the connecting portion 21 is fixedly connected to the closed end 12 to connect and electrically connect the plugging portion 10 and the transition portion 20.

[0033] Due to the reduction of gasoline fuel resources and environmental protection reasons, more and more countries regard new energy vehicles as the future development direction of automobiles. The popularity of new energy vehicles is getting higher and higher, and the charging system for replenishing energy for new energy batteries is also developing faster and faster. Currently, in the charging system, traditional charging terminals are formed by machining, with high costs and low production efficiency. In addition, an upper injection molding sealing structure is required, increasing the overall manufacturing cost of the terminals. The plugging portion 10 of the terminal of the present utility model is processed and formed from tubular material, and the transition portion 20 at the tail end is formed by stamping a plate. The two are fixedly connected and combined for sealing. The flat functional portion 22 of the transition portion 20 is suitable for connecting large-square cables. Compared with ordinary charging terminals, the batch processing cost of this terminal is low, solving the problems of high cost and long processing time of round bar machining. The plugging end 11 of the plugging portion 10 has a through plugging cavity 111, and the closed end 12 of the plugging portion 10 is used to close one end of the plugging cavity 111, playing a role in sealing the inside of the terminal and solving the problem that the inner cavity of the stamping terminal needs to be sealed with glue.

[0034] In some embodiments, as Figure 2 shown, the closed end 12 is formed by extending one end of the plugging portion 10 into the plugging cavity 111 and being welded and closed.

[0035] The closed end 12 is formed by first extending one end of the plugging portion 10 into the plugging cavity 111 through a rolling process and then being closed through a welding process. The closed end 12 is integrally formed with the plugging portion 10, which can seal the inside of the terminal, solve the problem that the plugging cavity 111 of the stamping terminal needs to be sealed with glue injection, reduce costs and save processing time.

[0036] In some embodiments, as Figure 4 shown, the closed end 12 is a plate-like body, and the plate-like body at least partially closes one end of the plugging cavity 111 and is welded to one end of the plugging cavity 111.

[0037] The plate-like body is convenient for processing and manufacturing, with high processing efficiency and low cost. The plate-like body is welded to one end of the insertion cavity 111 to seal the insertion cavity 111, preventing water vapor and impurities from entering the insertion cavity 111, ensuring the safety of the electrical connection between the terminal and the mating terminal 40, solving the problem that the inner cavity of the stamping terminal needs to be sealed with glue to seal the insertion cavity 111, reducing costs and saving processing time.

[0038] In some embodiments, as Figure 5 shown, the closed end 12 is configured as a cylindrical body with one end open and the other end closed, and the cylindrical body is inserted or snap-connected or screwed or press-fitted or riveted to one end of the insertion portion 10.

[0039] The cylindrical body is inserted or snap-connected or screwed or press-fitted or riveted to one end of the insertion portion 10, which can not only seal the insertion cavity 111 of the insertion portion 10, prevent water vapor and impurities from entering the insertion cavity 111, ensure the safety of the electrical connection between the terminal and the mating terminal 40, solve the problem that the inner cavity of the stamping terminal needs to be sealed with glue to seal the insertion cavity 111, reduce costs and save processing time, but also make the closed end 12 detachable from the insertion end 11. If one of them is damaged, it can be disassembled for repair, preventing the whole replacement, saving costs and extending the service life of the terminal.

[0040] In some embodiments, as Figures 2-5 shown, the transition portion 20 is generally flat, and the end of the transition portion 20 is attached to and welded to the closed end 12.

[0041] The flat transition portion 20 is more convenient for the operator to operate. After the transition portion 20 is attached to the closed end 12 and welded, the strength of the overall structure of the terminal is ensured. The flat transition portion 20 is suitable for connecting large cross-section cables.

[0042] In some embodiments, as Figure 1 shown, the cross-section of the transition portion 20 is L-shaped, the connecting portion 21 and the functional portion 22 are connected by an arc-shaped transition portion 23, and the end of the connecting portion 21 abuts against the side of the closed end 12 and is connected by welding.

[0043] The transition portion 20 with an L-shaped cross-section and the side of the closed end 12 have a larger fitting surface, which can be closely fitted and welded to ensure the strength of the overall structure of the terminal after welding.

[0044] In some embodiments, as Figure 6 shown, the cross-section of the transition portion 20 is L-shaped, the connecting portion 21 and the functional portion 22 are connected by an arc-shaped transition portion 20, the closed end 12 and the connecting portion 21 are integrally formed, and the closed end 12 and the connecting portion 21 jointly seal one end of the insertion cavity 111.

[0045] The closed end 12 and the connecting portion 21 are integrally formed to jointly seal one end of the insertion cavity 111. The structure of the terminal itself can achieve a sealing effect, eliminating the need for an additional injection-molded sealing structure to prevent moisture and impurities from entering the insertion cavity 111, ensuring the safety of the electrical connection between the terminal and the mating terminal 40, solving the problem that the inner cavity of traditional stamping terminals needs to be sealed with glue to seal the insertion cavity 111, greatly reducing costs and saving processing time.

[0046] In some embodiments, a plating layer is provided at least on the end face where the free end of the closed end 12 contacts the connecting portion 21.

[0047] The plating layer is provided by electroplating, electroless plating, magnetron sputtering or vacuum plating. The plating layer enhances the wear resistance, corrosion resistance and electrical conductivity of the end face where the free end of the closed end 12 contacts the connecting portion 21.

[0048] In some embodiments, as Figure 1 and Figure 7 shown, a drum spring 30 is further included. An annular mounting groove 112 is formed in the insertion cavity 111. The drum spring 30 is disposed in the annular mounting groove 112. Both ends of the drum spring 30 are respectively abutted against the two end faces of the axial direction of the annular mounting groove 112 to be limited in the annular mounting groove 112. The drum spring 30 has a waist drum shape with larger diameters at both ends and a smaller diameter in the middle. The minimum inner diameter of the drum spring 30 abuts against and is electrically connected to the outer wall of the mating terminal 40.

[0049] Adding the drum spring 30 in the annular mounting groove 114 enables the mutually inserted terminals to have a greater insertion force, firmly clamping the mating terminal 40, ensuring the stability of signal transmission, and also providing elastic contact to prevent severe wear at the contact due to non-concentricity of the terminals when the terminal and the mating terminal 40 are in rigid insertion contact, thereby avoiding problems such as increased resistance, increased working temperature, and decreased power transmission of electric energy.

[0050] In some embodiments, sealing grooves 113 and mounting grooves 114 are spacedly provided on the outer wall of the insertion end 11.

[0051] The sealing grooves 113 are used to place a sealing ring for sealing between the terminal and the installation environment, and the mounting grooves 114 are used for clamping with a fixed position to fix the terminal.

[0052] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present utility model. The scope of the present utility model is defined by the appended claims.

Claims

1. A terminal, one end of which is used for plugging with a mating terminal, and the other end is used for connecting a cable, characterized in that, It includes a plug-in part and a transition part. The plug-in part is made of tubular material and includes a plug-in end and a closed end connected in sequence. The plug-in end has a through plug-in cavity, and the closed end is used to close one end of the plug-in cavity. The transition part includes a connecting part and a functional part connected in sequence. The functional part is configured to be flat and is used to connect the cable. The end of the connecting part is fixedly connected to the closed end to connect and electrically connect the plug-in part and the transition part.

2. A terminal according to claim 1, characterized in that, The closed end is formed by extending one end of the plug-in part into the plug-in cavity and being welded and closed.

3. A terminal according to claim 1, wherein, The closed end is a plate-like body, and the plate-like body at least partially closes one end of the plug-in cavity and is welded to one end of the plug-in cavity.

4. A terminal according to claim 1, characterized in that, The closed end is configured as a cylindrical body with one end open and the other end closed. The cylindrical body is connected to one end of the plug-in part by plugging, clamping, screwing, interference fitting, or riveting.

5. A terminal according to any one of claims 2-4, characterized in that, The transition part is integrally flat, and the end of the transition part is attached to and welded to the closed end.

6. A terminal according to claim 1, characterized in that, The cross-section of the transition part is L-shaped. The connecting part and the functional part are connected by an arc-shaped transition part. The end of the connecting part abuts against the side of the closed end and is connected by welding.

7. A terminal according to claim 1, characterized in that, The cross-section of the transition part is L-shaped. The connecting part and the functional part are connected by an arc-shaped transition part. The closed end and the connecting part are integrally formed, and the closed end and the connecting part jointly close one end of the plug-in cavity.

8. A terminal according to claim 1, characterized in that, At least a plating layer is provided on the end face where the free end of the closed end and the connecting part are in contact.

9. A terminal according to claim 1, characterized in that It further includes a drum spring. An annular installation groove is provided in the plug-in cavity. The drum spring is arranged in the annular installation groove. The two ends of the drum spring respectively abut against the two end faces in the axial direction of the annular installation groove to be limited in the annular installation groove. The drum spring is in the shape of a waist drum with larger diameters at both ends and a smaller diameter in the middle. The minimum inner diameter of the drum spring abuts against and is electrically connected to the outer wall of the mating terminal.

10. A terminal according to claim 1, characterized in that, Sealing grooves and installation grooves are arranged at intervals on the outer wall of the plug-in end.

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