New energy automobile charging socket stamping terminal

Abstract

The utility model relates to the field of new energy automobile charging sockets, and particularly discloses a new energy automobile charging socket stamping terminal, which comprises a terminal body, the terminal body comprises a base body and a reed, the base body is provided with an installation cavity, the reed is detachably matched with the installation cavity in an embedded manner, the base body is provided with a first limiting groove, and the outer wall of the base body is provided with a plastic coating layer. A mounting groove is formed in the outer wall of the plastic coating layer, a sealing ring is connected in the mounting groove in an embedded mode, and a limiting piece is arranged on the outer wall of the plastic coating layer; the electric connector further comprises a socket shell, the terminal body is matched with the socket shell in an inserted mode, the socket shell comprises a clamping claw and a cavity, the clamping claw is movably matched with the first limiting groove in an abutting mode, the sealing ring is in interference fit with the inner wall of the cavity, the inner wall of the cavity is provided with a second limiting groove, and the limiting piece is matched with the second limiting groove in an embedded mode, so that the terminal body can be directly clamped in the socket shell. No extra plastic part is needed for fixation, the number of parts and assembly steps are reduced, the production efficiency can be greatly improved, and the machining and material cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicle charging sockets, in particular to a new energy vehicle charging socket stamping terminal. Background Art

[0002] The new energy vehicle charging socket is a device used to connect the new energy vehicle charging pile. It is used to complete the power transmission and communication functions between the charging pile and the new energy vehicle.

[0003] On December 31, 2022, the 13-year-long new energy vehicle purchase subsidy policy will be terminated. All new energy vehicle manufacturers are reducing product costs through technological updates, and charging technology is also constantly iterating. The terminal is a part with a relatively large cost in the new energy vehicle charging socket. Therefore, in order to reduce the cost of charging socket products, the terminal must become the focus of cost reduction.

[0004] In the prior art, the production process of the terminals in most charging sockets is implemented by pure machining. The production efficiency is low, the processing cost is high, and the raw material cost investment is also large. In addition, the fixation of the machined terminals in the socket often needs to be stuck in a plastic part. The terminal is fixed by fixing this plastic part, which increases the number of parts in the socket assembly and the installation time, thereby reducing production efficiency and increasing the cost of the socket.

[0005] The existing patent number is CN216214302U, which is a quickly replaceable new energy charging socket, including multiple assembly terminals. The outer surfaces of the multiple assembly terminals are all provided with snap-fit ​​sleeves to enhance the installation stability of the assembly terminals, which increases the number of socket assembly parts and the installation time. Utility Model Content

[0006] The utility model provides a punching terminal for a charging socket of a new energy vehicle, so as to solve the technical problems of low socket production efficiency and high processing cost in the prior art.

[0007] In order to solve the above problems, the utility model provides a new energy vehicle charging socket stamping terminal adopts the following technical solution: comprising a terminal body, the terminal body comprising a base body and a spring, the base body is provided with an installation cavity, the spring and the installation cavity are detachably engaged, the base body is provided with a first limiting groove, the outer wall of the base body is provided with a plastic coating layer, the outer wall of the plastic coating layer is provided with an installation groove, a sealing ring is engaged and connected in the installation groove, and a limiting member is provided on the outer wall of the plastic coating layer;

[0008] It also includes a socket shell, the terminal body is plugged into the socket shell, the socket shell includes a clamp and a cavity, the clamp is movably abutted against the first limit groove, the sealing ring is interference fit with the inner wall of the cavity, the inner wall of the cavity is provided with a second limit groove, and the limit piece is engaged with the second limit groove.

[0009] Furthermore, a limiting protrusion is provided on the inner wall of the installation cavity, and the limiting protrusion cooperates with the spring sheet to abut against the top.

[0010] Furthermore, the spring leaf includes an elastic part and a fixed part, the elastic part is fixedly connected to the fixed part, the fixed part and the limiting protrusion are abutted and matched, the generatrix of the elastic part is set as a curve with a concave middle part, and an oblique bar hole is set on the elastic part.

[0011] Furthermore, the width of the limiting protrusion is greater than the width of the fixing portion.

[0012] Furthermore, the spring leaf is arranged as an arc-shaped columnar structure, and the arc curve on the cross section is a major arc.

[0013] Furthermore, the fixing parts and the limiting protrusions each include two groups, the two groups of fixing parts correspond to the two groups of limiting protrusions one by one, the two groups of fixing parts are respectively located at both ends of the elastic part, and the spring sheet is installed between the two groups of limiting protrusions.

[0014] Furthermore, an electroplating layer is provided on the outer wall of the substrate, and the plastic coating layer is located on the outer wall of the electroplating layer.

[0015] Furthermore, the base includes an installation section, a connecting section, and a power connection section. The connecting section is located between the installation section and the power connection section. The installation cavity and the first limit groove are both located in the installation section. The first limit groove and the installation cavity are interconnected. The plastic coating layer is located on the outer wall of the connecting section, and the limit member is a protruding structure based on the outer wall of the plastic coating layer.

[0016] Furthermore, the power connection section is provided with a wiring groove, the power connection section is provided with cable fixing wings on both sides of the wiring groove, and the inner wall of the wiring groove is provided with anti-slip grooves.

[0017] Furthermore, the base body is an integral stamping structure.

[0018] The beneficial effects of the stamped terminal of the new energy vehicle charging socket provided by the utility model are: the terminal body can be directly stuck in the socket shell, no additional plastic parts are needed for fixing, the number of parts and assembly steps are reduced, the production efficiency can be greatly improved, the processing and material costs can be reduced, and the connection stability between the terminal body and the socket shell can be effectively enhanced. The terminal contacts the matching pin through the spring sheet, which can effectively improve the plug-in life and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of a punching terminal for a new energy vehicle charging socket of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of a terminal body of a new energy vehicle charging socket stamping terminal of the utility model;

[0022] Figure 3 This is a schematic diagram of the exploded structure of a terminal body of a new energy vehicle charging socket stamping terminal of the utility model;

[0023] Figure 4 This is a schematic cross-sectional structure diagram of a terminal body of a new energy vehicle charging socket stamping terminal of the utility model;

[0024] Figure 5 The utility model is a schematic diagram of the structure of a spring sheet of a stamping terminal of a new energy vehicle charging socket.

[0025] Description of reference numerals:

[0026] 1. Terminal body; 11. Base; 111. Installation cavity; 112. Limiting protrusion; 113. Installation section; 114. Connection section; 1141. First limiting groove; 115. Power connection section; 1151. Wiring groove; 1152. Cable fixing wing; 1153. Anti-slip groove; 116. Plastic coating; 1161. Installation groove; 1162. Sealing ring; 1163. Limiting piece; 12. Spring leaf; 121. Elastic part; 1211. Oblique bar hole; 122. Fixing part; 13. Buckle; 2. Socket housing; 21. Claw; 22. Cavity; 23. Second limiting groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0028] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.

[0029] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0030] On December 31, 2022, the 13-year-long new energy vehicle purchase subsidy policy will be terminated. All new energy vehicle manufacturers are reducing product costs through technological updates, and charging technology is also constantly iterating. The terminal is a part with a relatively large cost in the new energy vehicle charging socket. Therefore, in order to reduce the cost of charging socket products, the terminal must become the focus of cost reduction.

[0031] In the prior art, the production process of the terminals in most charging sockets is implemented by pure machining. The production efficiency is low, the processing cost is high, and the raw material cost investment is also large. In addition, the fixation of the machined terminals in the socket often needs to be stuck in a plastic part. The terminal is fixed by fixing this plastic part, which increases the number of parts in the socket assembly and the installation time, thereby reducing production efficiency and increasing the cost of the socket.

[0032] The utility model provides a new energy vehicle charging socket stamping terminal, such as Figures 1 to 5 As shown, the terminal body 1 includes a base 11 and a spring 12. The base 11 is provided with a mounting cavity 111. The spring 12 is detachably engaged with the mounting cavity 111. The base 11 is provided with a first limiting groove 1141. The outer wall of the base 11 is provided with a plastic coating layer 116. The outer wall of the plastic coating layer 116 is provided with a mounting groove 1161. A sealing ring 1162 is engaged and connected in the mounting groove 1161. The outer wall of the plastic coating layer 116 is provided with a limiting member 1163.

[0033] It also includes a socket housing 2, the terminal body 1 is plugged into the socket housing 2, the socket housing 2 includes a clamp 21 and a cavity 22, the clamp 21 and the first limiting groove 1141 are movably abutted against each other, the sealing ring 1162 is interference fit with the inner wall of the cavity 22, the inner wall of the cavity 22 is provided with a second limiting groove 23, and the limiting member 1163 is engaged with the second limiting groove 23.

[0034] By adopting the above technical solution, the terminal body 1 can be directly stuck in the socket housing 2, and no additional plastic parts are required for fixing, which reduces the number of parts and assembly steps, can greatly improve production efficiency, reduce processing and material costs, and can effectively enhance the connection stability between the terminal body 1 and the socket housing 2. The terminal contacts the matching pin through the spring leaf 12, which can effectively improve the plug-in life and is more practical.

[0035] In this embodiment, when the terminal body 1 is processed, the base 11 is first formed by a stamping device, and then the base 11 is electroplated together with the material strip (the electroplating layer described below). After the electroplating is completed, the outer wall of the base 11 is plastic-coated to make the base 11 and the plastic-coated body become a whole. Then the spring leaf 12 is installed in the installation cavity 111. Finally, the sealing ring 1162 is installed in the first limiting groove 1141 to complete the assembly of the terminal.

[0036] In this embodiment, the finished terminal is installed into the socket housing 2 after the wire is crimped. During the installation process, the outer side of the base 11 contacts the catch 21, and the catch 21 is deformed under pressure. When the terminal moves to the inner wall of the first limiting groove 1141 and exceeds the front end face of the catch 21, the catch 21 rebounds, and the front end face of the catch 21 is pressed against the inner wall of the first limiting groove 1141 to fit in, thereby ensuring that the terminal does not retreat. Before the terminal is fully installed, the limiting member 1163 will play a positioning role. Only when the limiting member 1163 and the second limiting groove 23 are aligned can the terminal be fully inserted into place, while ensuring that the first limiting groove 1141 is engaged with the front end face of the catch 21. After the terminal is installed, the sealing ring 1162 and the cavity 22 are interference fit to achieve sealing.

[0037] In this embodiment, a limiting protrusion 112 is provided on the inner wall of the installation cavity 111, and the limiting protrusion 112 cooperates with the spring leaf 12 to abut against it. The spring leaf 12 can be directly inserted into the installation cavity 111 and fixed by the limiting protrusion 112, which can further reduce the number of parts and assembly steps, improve production efficiency, and reduce processing and material costs.

[0038] In this embodiment, the reed 12 includes an elastic portion 121 and a fixed portion 122. The elastic portion 121 is fixedly connected to the fixed portion 122, and the fixed portion 122 is abutted against the limiting protrusion 112. In this embodiment, the fixed portion 122 and the elastic portion 121 are integrally formed, and the busbar of the elastic portion 121 is set as a curve with a depression in the middle. When the terminal contacts the charging plug, a larger contact area can be formed, which not only enhances the stability of the electrical connection, but also reduces the contact resistance, improves the charging efficiency, and enables the reed 12 to produce a more uniform deformation when subjected to external force, thereby providing better elasticity and recovery performance, ensuring that the reed 12 can maintain stable electrical contact with the charging plug during the plugging and unplugging process of the charging socket. In this example, the elastic portion 121 is provided with oblique bar holes 1211, which helps to improve the heat dissipation performance. During the charging process, the heat generated by the passage of current can be quickly dissipated through these oblique bar holes 1211, preventing the reed 12 from being damaged due to overheating.

[0039] In this embodiment, the width of the limiting protrusion 112 is greater than the width of the fixing portion 122. The fixing portion 122 and the limiting protrusion 112 each include two groups. The two groups of the fixing portions 122 correspond to the two groups of the limiting protrusions 112 one by one. The two groups of the fixing portions 122 are respectively located at both ends of the elastic portion 121. The spring leaf 12 is installed between the two groups of the limiting protrusions 112, which can effectively prevent the spring leaf 12 from being pulled out during the pin removal process, and can effectively prevent the spring leaf 12 from retreating during the pin insertion process, thereby enhancing the stability of the spring leaf 12 during use and effectively reducing the risk of loosening or falling off due to vibration or impact.

[0040] In this embodiment, the reed 12 is configured as an arc-shaped columnar structure, and the arc curve on the cross section is a major arc. In this embodiment, the arc curve on the cross section of the reed 12 is close to a circle, which can make the reed 12 have better elasticity and recovery. When the reed 12 with a major arc shape is subjected to external force, it can distribute stress more evenly and reduce the phenomenon of local stress concentration, which helps to extend the service life of the reed 12 and improve the reliability of the entire charging socket. In addition, this structure allows the reed 12 to be taken out of the socket for replacement without dismantling the vehicle after it fails, avoiding replacement of the entire wiring harness.

[0041] In this embodiment, each group of limiting protrusions 112 includes multiple limiting protrusions 112, and the multiple limiting protrusions 112 are located on the inner wall of the installation cavity 111 and are evenly distributed along the circumferential direction. In other embodiments, the limiting protrusions 112 can also be set to various forms such as an annular integrated structure.

[0042] In this embodiment, an electroplating layer is disposed on the outer wall of the substrate 11 , and the plastic coating layer 116 is located on the outer wall of the electroplating layer.

[0043] In this embodiment, the base 11 includes an installation section 113, a connecting section 114, and a power connection section 115. The connecting section 114 is located between the installation section 113 and the power connection section 115. The installation cavity 111 and the first limiting groove 1141 are both located in the installation section 113. The first limiting groove 1141 is interconnected with the installation cavity 111. The plastic coating layer 116 is located on the outer wall of the connecting section 115. The maximum diameter of the connecting section 114 is greater than the maximum diameter of the installation section 113. The maximum diameter of the plastic coating layer 116 is equal to the maximum diameter of the connecting section 114. The limiting member 1163 is a raised structure based on the outer wall of the plastic coating layer 116 to ensure the practicality of the structure.

[0044] In this embodiment, the power connection section 115 is provided with a wiring groove 1151, and the power connection section 115 is provided with cable fixing wings 1152 on both sides of the wiring groove 1151. In this embodiment, the power connection section 115 is a plate-type structure, which is responsible for transferring the current in the cable to other parts of the terminal and connecting with the PCB board or other equipment. The cable fixing wings 1152 are used to fix the cable. When the cable is crimped on the terminal, the cable is embedded in the wiring groove 1151, and the cable fixing wings 1152 are overlapped and crimped to prevent the cable from sliding or moving in the wiring groove 1151, thereby ensuring a stable connection between the cable and the power connection section 115.

[0045] In this embodiment, the inner wall of the wiring groove 1151 is provided with anti-skid grooves 1153. In this embodiment, three groups of anti-skid grooves 1153 are provided. The anti-skid grooves 1153 can increase the friction between the cable and the wiring groove 1151 to prevent the cable from slipping out of the wiring groove 1151 or loosening when subjected to external force. In other embodiments, the design of the anti-skid grooves 1153 can be adjusted and optimized according to factors such as the material, diameter and shape of the cable to ensure the best anti-skid effect.

[0046] The existing machined terminal base is made of copper rods, with low production efficiency and high processing and material costs. In the present embodiment, the base 11 is an integrated stamping structure, so that the terminal body 1 has higher strength and stability, and the processing and material costs of the terminal are lower. In the present embodiment, the terminal body 1 is rolled into a round shape after the stamping process is completed, and the connection between the two side edges of the terminal body 1 is provided with a mating buckle 13, and the buckle 13 is set to a wedge-shaped structure, which enhances the integrity and stability of the structure, so that the terminal joint does not require laser welding to ensure the connection strength.

[0047] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and other terms indicating orientation or position relationship are based on the orientation or position relationship shown in the drawings of this specification, which are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0048] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A new energy vehicle charging socket stamping terminal, characterized in that: The terminal body includes a base body and a spring. The base body is provided with a mounting cavity. The spring is detachably engaged with the mounting cavity. The base body is provided with a first limiting groove. The outer wall of the base body is provided with a plastic coating layer. The outer wall of the plastic coating layer is provided with a mounting groove. A sealing ring is engaged and connected in the mounting groove. The outer wall of the plastic coating layer is provided with a limiting member. It also includes a socket shell, the terminal body is plugged into the socket shell, the socket shell includes a clamp and a cavity, the clamp is movably abutted against the first limit groove, the sealing ring is interference fit with the inner wall of the cavity, the inner wall of the cavity is provided with a second limit groove, and the limit piece is engaged with the second limit groove.

2. A new energy vehicle charging socket stamping terminal according to claim 1, characterized in that: A limiting protrusion is arranged on the inner wall of the installation cavity, and the limiting protrusion cooperates with the spring sheet.

3. A new energy vehicle charging socket stamping terminal according to claim 2, characterized in that: The spring sheet comprises an elastic part and a fixed part, wherein the elastic part is fixedly connected to the fixed part, the fixed part is abutted against the limiting protrusion, the generatrix of the elastic part is arranged as a curve with a depression in the middle, and an oblique hole is arranged on the elastic part.

4. A new energy vehicle charging socket stamping terminal according to claim 3, characterized in that: The width of the limiting protrusion is greater than the width of the fixing portion.

5. A new energy vehicle charging socket stamping terminal according to claim 3, characterized in that: The reed is arranged as an arc-shaped columnar structure, and the arc curve on the cross section is a major arc.

6. A new energy vehicle charging socket stamping terminal according to claim 5, characterized in that: The fixing parts and the limiting protrusions each include two groups, the two groups of fixing parts correspond to the two groups of limiting protrusions one by one, the two groups of fixing parts are respectively located at the two ends of the elastic part, and the spring sheet is installed between the two groups of limiting protrusions.

7. A new energy vehicle charging socket stamping terminal according to any one of claims 1 to 5, characterized in that: The outer wall of the substrate is provided with an electroplating layer, and the plastic coating layer is located on the outer wall of the electroplating layer.

8. A new energy vehicle charging socket stamping terminal according to any one of claims 1 to 5, characterized in that: The base includes an installation section, a connecting section, and a power connection section. The connecting section is located between the installation section and the power connection section. The installation cavity and the first limit groove are both located in the installation section. The first limit groove and the installation cavity are interconnected. The plastic coating layer is located on the outer wall of the connecting section, and the limit piece is a protruding structure based on the outer wall of the plastic coating layer.

9. A new energy vehicle charging socket stamping terminal according to claim 8, characterized in that: The power connection section is provided with a wiring groove, the power connection section is provided with cable fixing wings on both sides of the wiring groove, and the inner wall of the wiring groove is provided with anti-slip grooves.

10. A new energy vehicle charging socket stamping terminal according to any one of claims 1 to 5, characterized in that: The base body is an integral stamping structure.

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