New energy automobile charging socket stamping terminal connected with PCB

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 connected with a PCB, which comprises a terminal body and the PCB, the terminal body comprises a power connection part, the power connection part forms a first mounting cavity and an opening communicated with the first mounting cavity, the power connection part is provided with a contact separation blade facing the opening, and the contact separation blade is connected with the PCB. A contact elastic piece is arranged on the side, facing the terminal body, of the PCB, the contact elastic piece is matched with the contact blocking piece in an abutting mode, after the PCB is installed in place, the contact elastic piece on the PCB makes contact with the contact blocking piece on the terminal body, the contact elastic piece is pressed to deform, contact pressure is generated, stable contact is guaranteed, the PCB can prevent the terminal body from retreating, and the service life of the terminal body is prolonged. According to the charging socket, the reliability and stability of electrical connection can be improved, the problem of poor contact or incapability of charging can be effectively avoided, the assembly of the terminal body and the PCB on the charging socket is simpler, the assembly working hours can be greatly reduced, and the practicability is higher.

Description

Technical Field

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

[0002] The national standard charging socket for new energy vehicles has terminals for signal transmission, including two terminals CC / CP in the AC socket and six terminals A+ / A- / S+ / S- / CC1 / CC2 in the DC socket. Each terminal transmits different signals during the process of inserting and removing the charging gun from the charging socket to control the charging. Therefore, each terminal needs to be wired separately. The more wiring harnesses there are, the more troublesome the assembly is. By using a PCB board to contact the signal terminal and integrating each circuit into a connector for wiring, the assembly of the charging socket can be greatly simplified.

[0003] At present, signal terminals are basically produced by machining, which has low processing efficiency, high material cost and limited cost reduction. In order to develop low-cost terminals, various suppliers are trying to replace machining processes with stamping processes to produce terminals. How to achieve stable contact between the terminal and the PCB after stamping is a problem that needs to be solved through terminal structure design and stamping process.

[0004] The existing patent application number is CN202322398260.6, which is a stamped terminal structure for a new energy vehicle charging socket. The terminal includes a terminal connection section for contacting a PCB terminal board. The terminal connection section includes a plurality of evenly distributed spring sheets. A deformable gap is reserved between adjacent spring sheets. The middle part of the spring sheet is arched outward, and a curved arc-shaped fitting surface is formed at the contact position between the spring sheet and the PCB terminal board. The terminal connection section contacts the PCB terminal board through the spring sheet, and the spring sheet produces elastic deformation. There is a positive pressure on the contact surface, so that the terminal is in stable contact with the connection point on the PCB terminal board. The spring sheet structure in this patent is complex, which increases the difficulty and cost of manufacturing the terminal, and the terminal connection section occupies a large space and has low practicality. Utility Model Content

[0005] The utility model provides a new energy vehicle charging socket stamping terminal connected to a PCB board, so as to solve the technical problems in the prior art of how to achieve stable contact between the terminal and the PCB after stamping, and the difficulty and high cost of terminal manufacturing.

[0006] In order to solve the above problems, the stamped terminal of the new energy vehicle charging socket connected to the PCB board provided by the utility model adopts the following technical solution: it includes a terminal body and a PCB board, the terminal body includes a power connection part, the power connection part forms a first installation cavity and an opening connected to the first installation cavity, a contact baffle is arranged at the power connection part toward the opening, and a contact spring is arranged on the side of the PCB board facing the terminal body, and the contact spring is abutted against the contact baffle.

[0007] Furthermore, a limiting member is arranged on the contact baffle, and the power connection portion is provided with a limiting groove corresponding to the limiting member, and the limiting member is engaged with the limiting groove.

[0008] Furthermore, the limiting groove is configured as a T-shaped through groove that is interconnected with the first installation cavity and the opening.

[0009] Furthermore, the terminal body also includes a mounting portion, the mounting portion is provided with an elastic clamping catch, and the elastic clamping catch protrudes outwardly along the outer wall of the mounting portion.

[0010] Furthermore, the mounting portion forms a second mounting cavity, and the mounting portion is provided with a fixing spring sheet, which is inclined and protrudes inwardly along the second mounting cavity.

[0011] Furthermore, the fixed spring sheet is arranged as a bending structure, one end of which is fixedly connected to the mounting portion, and the other end of which is bent inwardly toward one side of the second mounting cavity. The fixed spring sheet includes a plurality of fixed spring sheets, and the plurality of fixed spring sheets are evenly distributed along the circumferential direction of the inner wall of the second mounting cavity.

[0012] Furthermore, a sealing member is provided on the terminal body at the connection between the mounting portion and the power connection portion. The sealing member is spaced between the first mounting cavity and the second mounting cavity, and the outer diameter of the sealing member is greater than the outer diameter of the terminal body.

[0013] Furthermore, the sealing member is made of silicone.

[0014] Furthermore, a limiting block is provided at one end of the mounting portion away from the power connection portion, and the limiting block protrudes along the outer wall of the mounting portion.

[0015] Furthermore, the terminal body is an integrated stamping and rolling structure, and the connection between the two side edges of the terminal body is provided with a locking buckle for fitting, and the locking buckle is set as a wedge-shaped structure.

[0016] The beneficial effects of the stamped terminal of the new energy vehicle charging socket connected to the PCB board provided by the utility model are as follows: after the PCB board is installed in place, the contact spring on the PCB board contacts the contact blocking piece on the terminal body, the contact spring is deformed under pressure, and contact pressure is generated to ensure the stability of the contact, and the PCB board can prevent the terminal body from retreating, which can improve the reliability and stability of the electrical connection, and can effectively avoid the problem of poor contact or failure to charge. The assembly of the terminal body and the PCB board on the charging socket is simpler, which can greatly reduce the assembly time, is more practical, and is simple to process and occupies less space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 This is a schematic diagram of the structure of the punched terminal of the new energy vehicle charging socket connected to the PCB board of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the terminal body of the punched terminal of the new energy vehicle charging socket connected to the PCB board of the utility model;

[0020] Figure 3 It is a schematic cross-sectional structure diagram of a terminal body of a new energy vehicle charging socket stamping terminal connected to a PCB board of the utility model;

[0021] Figure 4 It is a side view structural schematic diagram of the terminal body of the punched terminal of the new energy vehicle charging socket connected to the PCB board of the utility model;

[0022] Figure 5 It is a partial structural schematic diagram of the terminal body of the punched terminal of the new energy vehicle charging socket connected to the PCB board of the utility model.

[0023] Description of reference numerals:

[0024] 1. Terminal body; 11. Power connection part; 111. First installation cavity; 112. Opening; 113. Contact baffle; 1131. Limiting piece; 114. Limiting groove; 12. Installation part; 121. Elastic catch; 122. Second installation cavity; 123. Fixed spring; 124. Limiting block; 13. Buckle; 14. Sealing part; 2. PCB board; 21. Contact spring; 3. Socket housing; 31. Step surface. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0028] The utility model provides a new energy vehicle charging socket stamping terminal connected to a PCB board, such as Figures 1 to 5 As shown, it includes a terminal body 1 and a PCB board 2. The terminal body 1 includes an electrical connection portion 11. The electrical connection portion 11 is formed with a first installation cavity 111 and an opening 112 connected to the first installation cavity 111. A contact blocking piece 113 is arranged at the electrical connection portion 11 toward the opening 112. A contact spring piece 21 is arranged on the side of the PCB board 2 facing the terminal body 1, and the contact spring piece 21 is abutted against the contact blocking piece 113.

[0029] By adopting the above technical solution, after the PCB board 2 is installed in place, the contact spring 21 on the PCB board 2 contacts the contact baffle 113 on the terminal body 1, and the contact spring 21 is deformed under pressure to generate contact pressure to establish a signal connection, thereby ensuring the stability of the contact between the contact spring 21 and the contact baffle 113, and the PCB board 2 can prevent the terminal body 1 from retreating, thereby improving the reliability and stability of the electrical connection, and effectively avoiding the occurrence of poor contact or charging failure. The assembly of the terminal body 1 and the PCB board 2 on the charging socket is simpler, which can greatly reduce the assembly time, is more practical, and is simple to process and occupies less space.

[0030] In the present embodiment, a limiting member 1131 is provided on the contact blocking piece 113, and the power connection portion 11 is provided with a limiting groove 114 corresponding to the limiting member 1131, and the limiting member 1131 is engaged with the limiting groove 114. In the present embodiment, the contact blocking piece 113 and the power connection portion 11 are integrally formed, and the limiting groove 114 is configured as a T-shaped through groove interconnected with the first mounting cavity 111 and the opening 112, thereby ensuring the flexibility of the contact blocking piece 113 in the limiting groove 114. The terminal body 1 is processed by a stamping process to ensure the strength and stability of the terminal body 1, which is more practical and simplifies the production process. In the process, the contact block 113 on the terminal body 1 is first formed and bent, and then the terminal body 1 is rolled. During the rolling process, the limiting member 1131 extends into the limiting groove 114 to ensure the accuracy of the position of the contact block 113 formed, and to ensure the stability of the contact block 113 when it abuts against the contact spring 21. In this embodiment, the limiting member 1131 is staggered with the reduced diameter portion of the limiting groove 114 facing the opening 112, which can further ensure the limitation of the contact block 113, while ensuring the flexibility of the contact block 113 in the limiting groove 114, and preventing the contact block 113 from bouncing up.

[0031] In the present embodiment, based on the end face of the terminal body 1 away from the power connection portion 11, the length of the end face of the terminal body 1 away from the power connection portion 11 facing the opening 112 is greater than the length of the end face of the terminal body 1 away from the end face of the contact spring 21 facing the opening 112, so that an engaging groove is formed between the end face of the power connection portion 11 facing the opening 112 and the end face of the contact spring 21 facing the opening 112. After the PCB board 2 is installed in place, the contact spring 21 is located in the engaging groove, and the rear end face of the terminal body 1 contacts the PCB board 2 to prevent the terminal body 1 from retreating.

[0032] In this embodiment, the structure in which the electrical connection portion 11 on the terminal body 1 contacts the PCB board 2 is a circular structure, and the diameter of the contact baffle 113 is close to the diameter of the terminal curl, thereby providing a sufficiently large contact area for the contact baffle 113 and the contact spring 21, and is not prone to poor contact.

[0033] In this embodiment, the terminal body 1 further comprises a mounting portion 12 , and the mounting portion 12 is provided with an elastic clamping catch 121 , and the elastic clamping catch 121 is inclined and protrudes outward along the outer wall of the mounting portion 12 .

[0034] In this embodiment, the terminal body 1 uses a material with a thickness of 0.5 mm, and only one elastic catch 121 is needed to meet the terminal pull-out force requirement, and the elastic catch 121 is located directly below the terminal body 1. There is no need to open a step hole in the left and right directions of the socket shell 3. Only one step surface 31 that cooperates with the elastic catch 121 is opened on the socket shell 3. The processing is simple, the processing time is reduced, and the strength of the socket shell 3 is not affected. In other embodiments, the elastic catch 121 can also be provided in multiple forms such as two or more.

[0035] In this embodiment, the finished terminal body 1 is installed into the socket after the wire is pressed. During the installation process, the outer side of the elastic catch 121 contacts the socket housing 3, and the elastic catch 121 is deformed under pressure. When the terminal body 1 moves to the point where the lower end face of the elastic catch 121 exceeds the step surface 31 of the socket housing 3, the elastic catch 121 rebounds, and the lower end face of the elastic catch 121 just hits the step surface 31 of the socket housing 3, thereby ensuring that the terminal does not retreat and is locked. The elastic catch 121 works together with the PCB board 2 to achieve secondary locking of the terminal body 1, thereby ensuring the stability of the terminal body 1 installed on the socket housing 3.

[0036] In this embodiment, the mounting portion 12 forms a second mounting cavity 122, and the mounting portion 12 is provided with a fixing spring 123. The fixing spring 123 is inclined and protrudes inward along the second mounting cavity 122, and the fixing spring 123 is arranged as an elastic bending structure. One end of the fixing spring 123 is fixedly connected to the mounting portion 12, and the other end of the fixing spring 123 is bent inward toward one side of the second mounting cavity 122. The fixing spring 123 includes a plurality of fixing springs 123, and the plurality of fixing springs 123 are evenly distributed along the circumferential direction of the inner wall of the second mounting cavity 122. In this embodiment, the fixing spring 123 is integrally stamped and formed with the terminal body 1. The arrangement of the fixing spring 123 makes the terminal do not need a steel cap and a spring leaf, and the fixing spring 123 directly contacts the pin, thereby reducing the number of parts and reducing the cost.

[0037] In this embodiment, the fixing spring pieces 123 include four. When the fixing spring pieces 123 are stamped and formed, movable grooves are formed on the movable parts of the terminal body 1 located at the fixing spring pieces 123 to ensure the flexibility of the fixing spring pieces 123 .

[0038] Taking a point on each of the four bent fixing springs 123 that is closest to the axis of the terminal body 1 will form a circle, the diameter of which is 0.3-0.5mm smaller than the matching pin. When the matching pin is inserted into the sub-body, the fixing spring 123 expands and deforms toward the outer wall of the terminal body 1, generating contact pressure on the contact surface between the contact spring 21 and the pin, thereby ensuring signal transmission.

[0039] In this embodiment, after the terminal body 1 is stamped, it can be continuously electroplated together with the material strip. The fixed spring 123 is silver-plated on the side wall facing the second installation cavity 122, and the other areas are nickel-plated, which can effectively reduce the electroplating cost. In other embodiments, the material of the electroplating layer of the terminal body 1 can be set to various conditions such as palladium-nickel alloy, single electroplated nickel, etc. according to actual working conditions.

[0040] In this embodiment, a limit block 124 is provided at one end of the mounting portion 12 away from the power connection portion 11, and the limit block 124 protrudes along the outer wall of the mounting portion 12. In this embodiment, a groove that fits with the limit block 124 needs to be provided on the socket housing 3. The limit block 124 will play a limiting role when the terminal body 1 is installed into the socket housing 3. The terminal body 1 can only be installed into the socket housing 3 when the limit block 124 is aligned with the groove, thereby ensuring that the elastic catch 121 is aligned with the step surface 31 on the socket housing 3 after the terminal body 1 is installed into the socket.

[0041] In this embodiment, the terminal body 1 is an integrated stamped and rolled structure, and the connection between the two side edges of the terminal body 1 is provided with a mating buckle 13. The buckle 13 is set to a wedge-shaped structure, which enhances the integrity and stability of the structure, so that the terminal butt joint does not require laser welding to ensure the connection strength. In this embodiment, the buckle 13 includes three groups, and the three groups of buckles 13 are respectively located at the two ends and the middle of the mounting part 12, which can further enhance the integrity and stability of the terminal body 1.

[0042] It should be noted that, in the present embodiment, in order to reduce the difficulty and cost of processing, when the terminal body 1 is stamped and formed, the first mounting cavity 111 and the second mounting cavity 122 are connected to each other, and a sealing member 14 is provided on the terminal body 1 at the connection between the mounting portion 12 and the power connection portion 11, and a connecting portion is formed on the terminal body 1 between the power connection portion 11 and the mounting portion 12, and the sealing member 14 is fixed to the terminal body 1 through the connecting portion, and the sealing member 14 is spaced between the first mounting cavity 111 and the second mounting cavity 122 to separate the first mounting cavity 111 from the second mounting cavity 122, thereby preventing water, impurities, etc. in the second mounting cavity 122 from entering the first mounting cavity 111, thereby ensuring the safety of the electrical connection of the terminal.

[0043] In this embodiment, the outer diameter of the seal 14 is larger than the outer diameter of the terminal body 1. The seal 14 is made of silicone. The seal 14 is injection molded with liquid silicone. This production process can ensure that the seal 14 is tightly bonded to the terminal body 1, achieving a protection level of IP67 or above. After the terminal body 1 is installed in the socket housing 3, the three waterproof ribs on the seal 14 are interference fit with the socket housing 3, achieving a protection level of IP67 or above, thereby preventing water from entering the PCB board 2 from the front of the socket.

[0044] 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.

[0045] 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. The stamping terminal of the new energy vehicle charging socket connected to the PCB board is characterized in that: It includes a terminal body and a PCB board. The terminal body includes an electrical connection part. The electrical connection part is formed with a first installation cavity and an opening connected to the first installation cavity. A contact blocking piece is arranged toward the opening of the electrical connection part. A contact spring piece is arranged on the side of the PCB board facing the terminal body. The contact spring piece is abutted against the contact blocking piece.

2. The new energy vehicle charging socket stamping terminal connected to the PCB board according to claim 1, characterized in that: A limiting piece is arranged on the contact baffle, and a limiting groove corresponding to the limiting piece is arranged on the power connection part, and the limiting piece is engaged with the limiting groove.

3. The new energy vehicle charging socket stamping terminal connected to the PCB board according to claim 2, characterized in that: The limiting groove is configured as a T-shaped through groove that is interconnected with the first installation cavity and the opening.

4. The new energy vehicle charging socket stamping terminal connected to the PCB board according to claim 1, characterized in that: The terminal body also includes a mounting portion, which is provided with an elastic clamping catch, and the elastic clamping catch is inclined and protrudes outward along the outer wall of the mounting portion.

5. The new energy vehicle charging socket stamping terminal connected to the PCB board according to claim 4, characterized in that: The mounting portion is formed with a second mounting cavity, and a fixing spring piece is provided on the mounting portion. The fixing spring piece is inclined and protrudes inwardly along the second mounting cavity.

6. The new energy vehicle charging socket stamping terminal connected to the PCB board according to claim 5, characterized in that: The fixed spring sheet is arranged as a bending structure, one end of which is fixedly connected to the mounting portion, and the other end of which is bent inwardly toward one side of the second mounting cavity. The fixed spring sheet comprises a plurality of fixed spring sheets, and the plurality of fixed spring sheets are evenly distributed along the circumferential direction of the inner wall of the second mounting cavity.

7. The new energy vehicle charging socket stamping terminal connected to the PCB board according to claim 5, characterized in that: A sealing member is provided on the terminal body at the connection between the mounting portion and the power connection portion. The sealing member is spaced between the first mounting cavity and the second mounting cavity, and the outer diameter of the sealing member is greater than the outer diameter of the terminal body.

8. The new energy vehicle charging socket stamping terminal connected to the PCB board according to claim 7, characterized in that: The seal is made of silicone.

9. The new energy vehicle charging socket stamping terminal connected to the PCB board according to claim 4, characterized in that: A limiting block is arranged at one end of the mounting portion away from the power connection portion, and the limiting block protrudes along the outer wall of the mounting portion.

10. The new energy vehicle charging socket stamping terminal connected to the PCB board according to any one of claims 1 to 9, characterized in that: The terminal body is an integrated stamping and rolling structure, and the connection between the two sides of the terminal body is provided with a locking buckle for fitting, and the locking buckle is set as a wedge-shaped structure.

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