Charging gun wiring terminal convenient to assemble and disassemble

Abstract

The charging gun wiring terminal convenient to assemble and disassemble comprises a crown spring, a fastening seat, a core column and a sleeve shaft, a connecting cavity is formed in the fastening seat, and an inserting opening and an inserting hole which are communicated with the outside are formed in the two sides of the connecting cavity respectively; the fastening base is sleeved with a core column, the core column is provided with a limiting block abutting against the bottom wall of the connecting cavity, the head end and the tail end of the core column penetrate through the insertion opening and the insertion hole to the outside correspondingly, and the tail end of the core column is connected with a power supply wire. A containing cavity is formed in the sleeve shaft, the crown spring is placed in the containing cavity and abuts against the top wall of the containing cavity, a through hole communicated with the outside is formed in the position, corresponding to the crown spring, of the top wall of the containing cavity, the bottom end of the sleeve shaft is detachably installed in the connecting cavity and abuts against the limiting block, and the head end of the core column extends into the containing cavity and abuts against the crown spring; compared with the prior art, the wiring terminal has the advantages that a fastening cap is omitted by designing a new assembling and disassembling mode, the crown spring is convenient to assemble and disassemble, the overall service life is prolonged, and the use safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of charging guns, and particularly relates to a charging gun terminal which is convenient for assembly and disassembly. Background Art

[0002] The terminal is a core component of the charging gun, which mainly includes a crown spring and a ferrule for connecting a power supply wire. An accommodating cavity with an outward opening is arranged inside the ferrule, and the crown spring is embedded in the accommodating cavity; when the charging gun is plugged into the vehicle, the energized plug on the vehicle enters the accommodating cavity and plugs the crown spring to realize power-on. However, the crown spring is prone to wear after long-term use, and it is difficult to disassemble the crown spring by the embedded method, resulting in the user needing to replace the entire terminal, and the maintenance cost is relatively high. For this reason, new terminals have emerged on the market.

[0003] As Figure 1 shown, currently, a fastening cap is added to the terminals on the market. The fastening cap is threadedly connected to the opening of the accommodating cavity and abuts against the crown spring, and a through hole for the energized plug to enter and exit the accommodating cavity is arranged on the fastening cap; this structural design facilitates the assembly and disassembly of the crown spring and is relatively convenient to use; however, it is found in the use process that due to the limitation of the accommodating cavity, the volume of the fastening cap is small, and the through hole needs to be set larger to meet the entry and exit of the energized plug, which makes the fastening cap itself relatively weak and prone to friction and rupture by the energized plug, and the service life is short; and the ruptured fastening cap will become loose and is easily taken away from the ferrule by the energized plug, and then the crown spring is exposed and falls out of the accommodating cavity, posing a relatively large safety hazard. Content of the Utility Model

[0004] Technical Problem to be Solved

[0005] The utility model provides a charging gun terminal which is convenient for assembly and disassembly, and can solve the problems mentioned in the background art.

[0006] Technical Solution

[0007] To achieve the above object, the utility model provides the following technical solution:

[0008] A charging gun terminal which is convenient for assembly and disassembly includes a crown spring, a fastening seat, a core column and a sleeve shaft; a coupling cavity is arranged inside the fastening seat, and a socket and a jack for connecting to the outside are respectively arranged on both sides of the coupling cavity; the fastening seat sleeves the core column, a limiting block for abutting against the bottom wall of the coupling cavity is arranged on the core column, and both the head and the tail ends of the core column respectively penetrate through the socket and the jack to the outside, and the tail end of the core column is connected to a power supply wire; an accommodating cavity is arranged inside the sleeve shaft, the crown spring is placed in the accommodating cavity and abuts against the top wall of the accommodating cavity, a through hole for connecting to the outside is arranged on the top wall of the accommodating cavity corresponding to the crown spring, the bottom end of the sleeve shaft is detachably installed in the coupling cavity and abuts against the limiting block, and the head end of the core column extends into the accommodating cavity and abuts against the crown spring.

[0009] Preferably, a wire fixing opening is provided at the rear end of the core column, and the power supply wire is inserted into the wire fixing opening.

[0010] Preferably, the rear end of the stem can be squeezed and deformed to reduce the wire fixing opening, thereby pressing against the power supply wire.

[0011] Preferably, the core column is made of copper material.

[0012] Preferably, a first observation hole connecting the outside world and the wire fixing port is also provided at the rear end of the stem.

[0013] Preferably, a second observation hole connecting the outside and the accommodating cavity is provided on the sleeve shaft, and a positioning hole is provided on the top end of the core column. When the sleeve shaft is assembled in place, the second observation hole is coaxially aligned with the positioning hole.

[0014] Preferably, a sealing groove is further provided on the core column, and a sealing ring is installed in the sealing groove to abut against the inner wall of the insertion hole.

[0015] Preferably, an internal thread is provided on the inner wall of the coupling cavity, and an external thread is provided on the outer wall of the bottom end of the sleeve shaft, and the external thread cooperates with the internal thread so that the bottom end of the sleeve shaft can be detachably installed in the coupling cavity.

[0016] Preferably, the core column is rotatably connected to the sleeve shaft, and the outer wall of the core column fits the inner wall of the accommodating cavity.

[0017] Preferably, the core column is interference fit with the accommodating cavity.

[0018] Beneficial Effects

[0019] The utility model provides a charging gun terminal that is easy to assemble and disassemble. A new assembly and disassembly method is designed to replace the fastening cap in the prior art, which is not only convenient for the assembly and disassembly of the crown spring, but also because the sleeve shaft itself has a large wall thickness and strong wear resistance, it can avoid the sleeve shaft from being broken when the power-carrying plug passes through the through hole, thereby extending the overall service life; and because the power-carrying plug is far away from the connection between the sleeve shaft and the fastening seat, it is difficult to drive the sleeve shaft away from the fastening seat when the power-carrying plug passes through the through hole, thereby avoiding the crown spring from falling out of the accommodating cavity, thereby improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 A structural schematic diagram of the prior art is shown;

[0022] Figure 2 Shows the overall structural schematic diagram of the present utility model;

[0023] Figure 3 Shows Figure 2 Cross-sectional view of;

[0024] Figure 4 Shows Figure 3 Enlarged view of part A in;

[0025] Figure 5 Shows Figure 2 Exploded schematic of Figure 1 ;

[0026] Figure 6 Shows Figure 2 Exploded schematic of Figure 2 .

[0027] In the figure: 1 fastening seat, 10 connection cavity, 101 socket, 102 jack, 10s internal thread, 2 core column, 20 limit block, 21 wire fixing port, 22 first observation hole, 23 positioning hole, 24 sealing groove, 25 sealing ring, 3 sleeve shaft, 30 accommodation cavity, 301 through hole, 302 second observation hole, 3s external thread, 4 crown spring, 5 charging gun end, 50 charging interface, G fastening cap. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application. It can be understood that the accompanying drawings are only for reference and illustration, and are not used to limit the present application. The connection relationships shown in the drawings are only for clear description and do not limit the connection methods.

[0029] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intermediate component at the same time. Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as those commonly understood by those skilled in the technical field to which this application belongs. It should also be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations. The terms used in the specification of this application in this article are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0030] Refer to the attached Figure 1 - attached Figure 6 , a charging gun terminal convenient for installation and disassembly, including a crown spring 4, a fastening seat 1, a core column 2 and a sleeve shaft 3; a connection cavity 10 is provided inside the fastening seat 1, and a socket 101 and a jack 102 for connecting to the outside are respectively provided on both sides of the connection cavity 10; the fastening seat 1 is sleeved on the core column 2, and a limiting block 20 for abutting against the bottom wall of the connection cavity 10 is provided on the core column 2, and both the head and tail ends of the core column 2 respectively penetrate through the socket 101 and the jack 102 to the outside, and the tail end of the core column 2 is connected to a power supply wire (not shown in the figure); a receiving cavity 30 is provided inside the sleeve shaft 3, the crown spring 4 is placed in the receiving cavity 30 and abuts against the top wall of the receiving cavity 30, and a through hole 301 for connecting to the outside is provided on the top wall of the receiving cavity 30 corresponding to the crown spring 4. The bottom end of the sleeve shaft 3 is detachably installed in the connection cavity 10 and abuts against the limiting block 20, and the head end of the core column 2 extends into the receiving cavity 30 and abuts against the crown spring 4.

[0031] As Figure 1 shown, a fastening cap G is added to the current wiring terminals on the market. The fastening cap G is threadedly connected to the opening of the receiving cavity 30 and presses against the crown spring 4, and a through hole 301 for the power-on plug post (not shown in the figure) to enter and exit the receiving cavity 30 is provided on the fastening cap G; this structural design is convenient for the installation and disassembly of the crown spring 4, but the fastening cap G is prone to wear and fall off; and this solution can solve this problem. For the convenience of understanding, this embodiment is described in combination with the charging gun end 5.

[0032] Specifically, during assembly, first place the crown spring 4 in the receiving cavity 30, insert the core column 2 into the fastening seat 1 so that the limiting block 20 abuts against the bottom wall of the connection cavity 10, and ensure that both the head and tail ends of the core column 2 penetrate through the socket 101 and the jack 102 to the outside; then, sleeved the head end of the core column 2 through the receiving cavity 30 of the sleeve shaft 3 and move it downward until the bottom end of the sleeve shaft 3 is installed in the connection cavity 10 and abuts against the limiting block 20. At this time, the head end of the core column 2 presses the crown spring 4 tightly in the receiving cavity 30, and thus the wiring terminal is assembled; finally, install the assembled wiring terminal at the charging interface 50 at the end 5 of the charging gun, and connect the power supply wire inside the charging gun to the tail end of the core column 2.

[0033] During charging, insert the end 5 of the charging gun into an automobile (not shown in the figure). The energized plug post (not shown in the figure) on the automobile enters the receiving cavity 30 through the through hole 301 and plugs into the crown spring 4 to achieve power-on.

[0034] During disassembly, first remove the power supply wire from the tail end of the core column 2, then remove the wiring terminal from the end 5 of the charging gun, and then remove the sleeve shaft 3 from the fastening seat 1, and then the crown spring 4 in the receiving cavity 30 can be taken out for replacement.

[0035] In summary, this wiring terminal replaces the fastening cap in the prior art by designing a new installation and disassembly method, which not only facilitates the installation and disassembly of the crown spring 4, but also because the sleeve shaft 3 itself has a relatively large wall thickness and strong abrasion resistance, avoiding the rupture of the sleeve shaft 3 when the energized plug post passes through the through hole 301, and extending the overall service life; also because the wiring terminal is restricted in position after being installed at the end 5 of the charging gun, and the energized plug post is far from the connection between the sleeve shaft 3 and the fastening seat 1, so it is difficult for the energized plug post to drive the sleeve shaft 3 to disengage from the fastening seat 1 when passing through the through hole 301, avoiding the crown spring 4 falling out of the receiving cavity 30 and improving the use safety.

[0036] Refer to the appendix Figure 2 - appendix Figure 6 For the convenience of installing the power supply wire, a wire fixing port 21 is provided at the tail end of the core column 2, and the power supply wire is inserted into the wire fixing port 21.

[0037] Among them, the power supply wire can be fixed in the wire fixing port 21 by welding or fixed by means of screws. Since there are various relevant fixing methods, they are not limited in this utility model. In order to improve the installation convenience, the crimping method is adopted for fixing in this utility model; specifically, the tail end of the core column 2 can be extruded and deformed to reduce the wire fixing port 21, and then abut and press the power supply wire inserted into the wire fixing port 21.

[0038] Refer to the appendix Figure 2 - appendix Figure 6 Refer to the appendix, the core column 2 is made of copper material, which not only has good electrical conductivity, but also is convenient to be extruded and deformed to reduce the wire fixing port 21.

[0039] Refer to the appendixFigure 2 - Appendix Figure 6 At the end of the core column 2, a first observation hole 22 connecting the outside and the wire fixing port 21 is also provided; the design of the first observation hole 22 facilitates the worker to check whether the power supply wire is completely inserted into the wire fixing port 21, ensuring the installation stability of the power supply wire.

[0040] Refer to Appendix Figure 2 - Appendix Figure 6 On the sleeve shaft 3, a second observation hole 302 connecting the outside and the accommodating cavity 30 is provided, and a positioning hole 23 is provided at the top end of the core column 2. The second observation hole 302 can be coaxially aligned with the positioning hole 23.

[0041] Specifically, during assembly, if the second observation hole 302 is misaligned with the positioning hole 23, it indicates that the sleeve shaft 3 is not installed in place. If the second observation hole 302 is coaxially aligned with the positioning hole 23, it indicates that the sleeve shaft 3 is assembled in place; therefore, the design of the second observation hole 302 can enable the sleeve shaft 3 to be correctly installed, ensuring that the first end of the core column 2 smoothly presses the crown spring 4 into the accommodating cavity 30.

[0042] Refer to Appendix Figure 2 - Appendix Figure 6 On the core column 2, a sealing groove 24 is also provided, and a sealing ring 25 that abuts against the inner wall of the jack 102 is installed in the sealing groove 24; this design can improve the installation stability of the core column 2 on the one hand, and make the terminal have a waterproof function on the other hand.

[0043] Refer to Appendix Figure 2 - Appendix Figure 6 The sleeve shaft 3 and the fastening seat 1 can be fixed by means of snap connection, threaded connection, etc. Since there are various relevant fixing methods, they are not limited in this utility model. For the convenience of installation and disassembly, in this embodiment, an internal thread 10s is provided on the inner wall of the connection cavity 10, and an external thread 3s is provided on the outer wall of the bottom end of the sleeve shaft 3. The external thread 3s cooperates with the internal thread 10s so that the bottom end of the sleeve shaft 3 can be detachably installed in the connection cavity 10.

[0044] Refer to Appendix Figure 2 - Appendix Figure 6 The core column 2 is rotatably connected to the sleeve shaft 3, and the outer wall of the core column 2 fits against the inner wall of the accommodating cavity 30; among them, the design that the outer wall of the core column 2 fits against the inner wall of the accommodating cavity 30 has a positioning function, enabling the axis of the accommodating cavity 30 to be accurately aligned with the axis of the connection cavity 10, and the core column 2 being rotatably connected to the sleeve shaft 3 is for the sleeve shaft 3 to be able to rotate smoothly to be threadedly connected to the inner wall of the connection cavity 10.

[0045] Refer to Appendix Figure 2 - Appendix Figure 6, the core column 2 is in interference fit with the accommodation cavity 30. This design enables the sleeve shaft 3 to sleeved on the core column 2 more stably, further improving the installation stability. However, it should be noted that when the sleeve shaft 3 is moved downward along the core column 2 or rotated around the core column 2, workers need to apply a certain force to the sleeve shaft 3 to overcome the resistance.

[0046] It should also be noted that although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application.

Claims

1. A charging gun terminal that is easy to assemble and disassemble, comprising a crown spring (4), characterized in that: Also includes: A fastening seat (1), wherein a connecting cavity (10) is provided inside the fastening seat (1), and a socket (101) and a socket (102) for connecting to the outside are respectively provided on two sides of the connecting cavity (10); A stem (2), the fastening seat (1) being sleeved with the stem (2), the stem (2) being provided with a limit block (20) abutting against the bottom wall of the connection cavity (10), and the head and tail ends of the stem (2) respectively pass through the socket (101) and the jack (102) to the outside, and the tail end of the stem (2) is connected to a power supply wire; A sleeve shaft (3), wherein a receiving chamber (30) is provided inside the sleeve shaft (3), the crown spring (4) is placed in the receiving chamber (30) and abuts against the top wall of the receiving chamber (30), a through hole (301) connected to the outside is opened on the top wall of the receiving chamber (30) corresponding to the crown spring (4), the bottom end of the sleeve shaft (3) is detachably mounted in the connecting chamber (10) and abuts against the limit block (20), and the head end of the core column (2) is extended into the receiving chamber (30) and abuts against the crown spring (4).

2. The charging gun terminal that is easy to assemble and disassemble according to claim 1, characterized in that: The rear end of the core column (2) is provided with a wire fixing opening (21), and the power supply wire is plugged into the wire fixing opening (21).

3. The charging gun terminal that is easy to assemble and disassemble according to claim 2, characterized in that: The rear end of the core column (2) can be squeezed and deformed to reduce the wire fixing opening (21), thereby pressing against the power supply wire.

4. The charging gun terminal that is easy to assemble and disassemble according to claim 3, characterized in that: The core column (2) is made of copper material.

5. The charging gun terminal that is easy to assemble and disassemble according to claim 2, characterized in that: The rear end of the core column (2) is also provided with a first observation hole (22) connected to the outside world and the wire fixing port (21).

6. The charging gun terminal that is easy to assemble and disassemble according to claim 1, characterized in that: The sleeve shaft (3) is provided with a second observation hole (302) that connects the outside and the accommodating chamber (30), and the top end of the core column (2) is provided with a positioning hole (23). When the sleeve shaft (3) is assembled in place, the second observation hole (302) is coaxially aligned with the positioning hole (23).

7. The charging gun terminal that is easy to assemble and disassemble according to claim 1, characterized in that: The core column (2) is also provided with a sealing groove (24), and a sealing ring (25) is installed in the sealing groove (24) and abuts against the inner wall of the insertion hole (102).

8. The charging gun terminal that is easy to assemble and disassemble according to claim 1, characterized in that: An internal thread (10s) is provided on the inner wall of the connecting cavity (10), and an external thread (3s) is provided on the outer wall of the bottom end of the sleeve shaft (3). The external thread (3s) cooperates with the internal thread (10s) so that the bottom end of the sleeve shaft (3) can be detachably mounted in the connecting cavity (10).

9. The charging gun terminal that is easy to assemble and disassemble according to claim 8, characterized in that: The core column (2) is rotatably connected to the sleeve shaft (3), and the outer wall of the core column (2) fits the inner wall of the accommodating cavity (30).

10. The charging gun terminal that is easy to assemble and disassemble according to claim 9, characterized in that: The core column (2) and the accommodating cavity (30) are interference fit.

Images