A type of flattened round tube high-power charging socket terminal

Abstract

This utility model discloses a high-power charging socket terminal made by flattening a round tube, comprising a terminal base, a plug, a spring, and a sealing ring installed within the terminal base. The terminal base is tubular, with one end flattened to form a slotted connector. The other end of the terminal base is equipped with a spring and a plug. The plug is pressed into the opening of the terminal base, with its bottom pressed against the spring. This utility model uses a round tube flattening method to manufacture the terminal base, changing the traditional method of forming the connector by machining. This method requires less material than using rods, has lower processing costs, and higher material utilization, significantly reducing the cost of the terminal base. Furthermore, the plug at the end of the spring allows for a shorter and thinner spring design, reducing material and electroplating costs. The plug design also prevents yielding deformation under excessive insertion and removal conditions, thus improving service life.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and more specifically, to a high-power charging socket terminal that is flattened from a round tube. Background Technology

[0002] Existing connection terminals typically include male and female terminals. To achieve the connection between the male and female terminals, a spring is provided inside the female terminal. Then, the male terminal is inserted into the spring. In this way, the spring enables the connection between the male and female terminals and the conduction of current between the male and female terminals.

[0003] Standard DC charging sockets have two high-power terminals: DC+ and DC-. These terminals are currently available in two main structures: spring-loaded and slotted. Spring-loaded terminals are more widely used due to their longer insertion / removal life and simpler manufacturing process. The most common type of spring-loaded terminal is a steel-cap structure, consisting of a terminal body, a spring, and a steel cap.

[0004] The terminal base is mainly machined from copper rods, which is time-consuming, has low material utilization, and is costly. The spring is mainly made of beryllium copper by stamping and twisting, followed by heat treatment to improve the yield strength of the material and prevent loss of insertion and extraction force during insertion and extraction. This type of spring is generally designed to be about 25mm in length and 0.4 or 0.5mm in thickness. The part is relatively heavy and has a large surface area. Beryllium copper itself is more expensive than ordinary copper alloys, so its material cost and electroplating cost are high.

[0005] On the other hand, beryllium copper, due to its low conductivity, experiences high temperature rise when used in high-power terminals, making it unsuitable for charging sockets with a current rating of 200A or higher. Furthermore, the intense price competition in the new energy vehicle market has led to a year-on-year decrease in the price of charging sockets. Terminals constitute a significant portion of the overall cost of a charging socket, making them a primary target for cost reduction. Customers currently require terminals that can meet high-power charging requirements while maintaining low cost.

[0006] Therefore, it is necessary to propose a method for flattening a round tube into a high-power charging socket terminal to solve the above-mentioned technical problems. Utility Model Content

[0007] This invention provides a flattened round tube high-power charging socket terminal to solve the problems of high processing cost and easy yielding deformation of existing high-power terminals, which affects their lifespan.

[0008] According to one aspect of the present invention, a high-power charging socket terminal with a flattened cylindrical tube is provided, comprising a terminal base, a plug, a spring, and a sealing ring installed in the terminal base. The terminal base is tubular with one end flattened to form a slotted connector. The other end of the terminal base is provided with a spring and a plug. The plug is pressed against the opening of the terminal base and its bottom is pressed against the spring. The sealing ring is installed in the terminal base on the side near the connector.

[0009] Based on the above scheme, preferably, the outer edge surface of the terminal base near the connector is provided with a raised rib.

[0010] Preferably, based on the above scheme, the inner edge surface of the terminal base corresponding to the rib is provided with a waterproof groove, and the waterproof groove is adapted to the sealing ring.

[0011] Based on the above scheme, preferably, the terminal base is also provided with a plurality of spaced drainage holes.

[0012] Based on the above-mentioned solution, the plug includes a stepped edge and a guide tube, the guide tube being integrally formed with the stepped edge, and the guide tube being pressed against the end face of the spring.

[0013] Preferably, based on the above scheme, the inner edge of the terminal base opposite to the connector is provided with a bottom step surface, and the open end of the terminal base is provided with a front step surface. The bottom of the spring is pressed against the bottom step surface, the other end of the spring is pressed against the free end of the guide tube, and the step edge is engaged with the front step surface.

[0014] Preferably, based on the above scheme, the surface of the reed is provided with a silver plating layer.

[0015] Based on the above-mentioned solution, the plug is preferably made of stainless steel.

[0016] This utility model discloses a high-power charging socket terminal made by flattening a round tube. The terminal base is manufactured by flattening a round tube, which changes the traditional process of forming the joint by machining. Compared with the process of using rod material, it requires less material, has lower processing costs, and higher material utilization, which can greatly reduce the cost of the terminal base. At the same time, the utility model uses a plug at the end of the spring, which not only allows the spring to be designed to be shorter and thinner, reducing the material and electroplating costs of the spring, but also avoids yielding deformation under abuse of insertion and removal conditions due to the plug design, thus improving the service life.

[0017] This invention uses a material with higher conductivity to make the spring, thereby reducing the terminal temperature rise and making it suitable for high-power charging conditions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the high-power charging socket terminal of the flattened round tube of this utility model.

[0020] Figure 2 This is a top view of the flattened cylindrical high-power charging socket terminal of this utility model.

[0021] Figure 3 This is a cross-sectional view of the high-power charging socket terminal of the flattened round tube of this utility model.

[0022] Figure 4 An exploded view of the terminal of the high-power charging socket with a flattened round tube according to this utility model;

[0023] Explanation of icon numbers:

[0024] 1. Terminal base; 11. Connector; 12. Raised rib; 13. Waterproof groove; 14. Drain hole; 15. Bottom step surface; 16. Front step surface; 17. Flattened transition area; 18. Flattened area; 2. Plug; 21. Step edge; 22. Guide tube; 3. Spring; 4. Sealing ring. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0027] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0028] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0029] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0032] Please see Figure 1 and combined Figure 2 and Figure 3 As shown, the present invention provides a flattened round tube high-power charging socket terminal, comprising a terminal base 1, a plug 2, a spring 3, and a sealing ring 4.

[0033] The terminal base 1 is manufactured from a round tube and provides an installation base for the plug 2, spring 3, and sealing ring 4. Specifically, the terminal base 1 of this invention is manufactured from a round tube, then ribs 12 are extruded, and the front and rear stepped surfaces of the terminal base 1 are machined using machining equipment. Afterwards, it is flattened on a mold to form a flattening transition area 17 and a flattening area 18, thus forming a straight connector 11. The terminal base 1 also needs to be electroplated to form a silver plating layer on its outer edge.

[0034] The spring 3 of this invention is formed by stamping strip. The material of the spring 3 can be a high-conductivity material, such as copper alloy, to reduce the volume resistivity and temperature rise of the spring 3, making it suitable for use in high-power charging terminals. After stamping, the spring 3 does not need to be twisted or heat-treated; it can be directly electroplated, typically with silver plating, which effectively reduces manufacturing costs.

[0035] The plug 2 can be produced using stamping or cold heading processes, and can be made of stainless steel to form a stainless steel head, thus eliminating the need for electroplating and saving costs. For example... Figure 1 As shown, the plug 2 of this utility model includes a stepped edge 21 and a guide tube 22. The guide tube 22 is integrally formed with the stepped edge 21 and is pressed onto the end face of the spring 3.

[0036] During installation, the sealing ring 4 is inserted into the inner hole of the terminal base 1, so that it fits against the side near the connector 11. In order to ensure the sealing effect of the sealing ring 4, the present invention also provides a waterproof groove 13 on the inner edge surface of the terminal base 1. The interference fit between the waterproof groove 13 and the sealing ring 4 is used to ensure that the sealing effect reaches the IP67 protection level and prevent water from flowing from the inner hole of the terminal to the flattened area 18.

[0037] The spring 3 is inserted into the terminal base 1. A bottom stepped surface 15 is provided on the inner edge of the terminal base 1 on the side opposite to the connector 11, and a front stepped surface 16 is provided at the open end of the terminal base 1. The bottom of the spring 3 is pressed against the bottom stepped surface 15, and the other end of the spring 3 abuts against the free end of the guide tube 22. The stepped edge 21 is engaged with the front stepped surface 16, so that the spring 3 sinks down. The outer side of the spring 3 contacts the inner wall of the terminal, and the inner side contacts the male terminal, thereby realizing stable power transmission. For the specific structure, please refer to [link to specific details]. Figure 4 As shown.

[0038] Furthermore, due to the design of the plug 2, the free end of the terminal base 1 can be squeezed and closed. After the closure, the terminal base 1 can effectively fix the plug 2 in the inner hole of the terminal base 1, so as to guide the male needle when it is inserted and prevent the plug 2 from being pulled out when the male needle is pulled out.

[0039] The plug 2 of this utility model has a certain length. The purpose of this design is to allow the spring 3 to sink. The advantage of the spring 3 sinking is that when the male terminal is inserted into the terminal at an angle, it is not easy to press against the contact spring of the spring 3, so that the contact spring will not yield and deform, resulting in the loss of insertion and extraction force.

[0040] Furthermore, the present invention also provides a raised rib 12 on the outer edge surface of the terminal base 1 near the connector 11.

[0041] Preferably, a plurality of spaced-apart drainage holes 14 are also provided on the terminal base 1.

[0042] This utility model discloses a high-power charging socket terminal made by flattening a round tube. The terminal base 1 is made by flattening a round tube, which changes the traditional process of forming the connector 11 by machining. Compared with the process of using rod material, it requires less material, has lower processing costs, and higher material utilization, which can greatly reduce the cost of the terminal base 1. At the same time, the plug 2 is set at the end of the spring 3 in this utility model. This not only allows the spring 3 to be designed to be shorter and thinner, reducing the material and electroplating costs of the spring 3, but also avoids yielding deformation under abuse of insertion and removal conditions due to the plug 2 design, thus improving service life.

[0043] This utility model discloses a flattened round tube high-power charging socket terminal. This type of terminal can reduce material, manufacturing, and electroplating costs, while also reducing contact resistance and temperature rise, thus meeting the requirements for high-power charging.

[0044] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-power charging socket terminal made by flattening a round tube, characterized in that, The device includes a terminal base, a plug, a spring, and a sealing ring installed within the terminal base. The terminal base is tubular with one end flattened to form a slotted connector. The other end of the terminal base is fitted with a spring and a plug. The plug is pressed against the opening of the terminal base, with its bottom pressed against the spring. The sealing ring is installed within the terminal base on the side of the connector. The plug includes a stepped edge and a guide tube, which are integrally formed with the stepped edge and pressed against the end face of the spring. The inner edge of the terminal base facing away from the connector has a bottom stepped surface, and the opening end of the terminal base has a front stepped surface. The bottom of the spring is pressed against the bottom stepped surface, and the other end of the spring abuts against the free end of the guide tube. The stepped edge engages with the front stepped surface, causing the spring to sink. The outer surface of the spring contacts the inner wall of the terminal, and the inner surface of the spring contacts the male terminal.

2. The high-power charging socket terminal with a flattened round tube as described in claim 1, characterized in that, The outer edge of the terminal base near the connector is provided with a raised rib.

3. The high-power charging socket terminal with a flattened round tube as described in claim 2, characterized in that, A waterproof groove is provided on the inner edge surface of the terminal base corresponding to the rib, and the waterproof groove is adapted to the sealing ring.

4. The high-power charging socket terminal with a flattened round tube as described in claim 2, characterized in that, The terminal base is also provided with a plurality of spaced drainage holes.

5. The high-power charging socket terminal with a flattened round tube as described in claim 1, characterized in that, The surface of the reed is coated with a silver layer.

6. The high-power charging socket terminal with a flattened round tube as described in claim 1, characterized in that, The plug is made of stainless steel.

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