Elastic sheet type charging terminal and charging socket

Abstract

The utility model relates to an elastic sheet type charging terminal which comprises a terminal framework, two ends of the terminal framework are respectively provided with a contact elastic sheet and a tail connecting plug, the contact elastic sheet is used for being contacted with a charging gun and forming electric connection with the charging gun, the tail connecting plug comprises a left elastic sheet and a right elastic sheet, a gap is formed between the left elastic sheet and the right elastic sheet, and the tail connecting plug is connected with the left elastic sheet and the right elastic sheet. And the contact elastic sheet is used for being matched with a male terminal of a PCB in an inserting manner and forming electric connection with the male terminal of the PCB, and the contact elastic sheet is electrically connected with the left elastic sheet and the right elastic sheet. The utility model also provides a charging socket, and by adopting the elastic sheet type charging terminal and the charging socket, the tail part of the terminal does not need to be crimped with a cable, the production time is reduced, the assembly efficiency can be improved, the connection is more stable and reliable, and the poor contact caused by the return of the terminal is prevented.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle charging technology, specifically a spring-loaded charging terminal and a charging socket. Background Technology

[0002] The standard AC charging socket has two φ3 signal terminals, CC and CP. The DC socket has six φ3 signal terminals, A+ / A- / S+ / S- / CC1 / CC2. These signal terminals need to be connected to the vehicle controller. Previously, most connection methods involved crimping a cable to the end of the signal terminal, with the other end of the cable connected to the vehicle connector. The disadvantage of this connection method is that socket assembly and sealing are relatively troublesome.

[0003] The current mainstream connection method is to connect the signal terminals to the PCB board, and then design several leads on the PCB board to exit as connectors. This can greatly reduce assembly difficulty, improve assembly efficiency, and also improve sealing performance.

[0004] However, existing terminals that connect to the PCB board mostly use contact springs or contact sheets to connect to the PCB board, which can easily lead to poor contact between the terminal and the PCB board. Utility Model Content

[0005] This utility model addresses the technical problems existing in the prior art by providing a spring-loaded charging terminal and charging socket to solve the problem of connecting the terminal to the PCB board.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A spring-type charging terminal includes a terminal frame, and two ends of the terminal frame are respectively provided with contact springs and tail plugs. The contact springs are used to contact the charging gun and form an electrical connection. The tail plugs include a left spring and a right spring, and a gap is formed between the left spring and the right spring for plugging and engaging with the male terminal of the PCB board and forming an electrical connection. The contact springs form an electrical connection with the left spring and the right spring.

[0007] Furthermore, one end of both the left and right spring pieces is arc-shaped, and the gap is formed between the vertices of the arcs of the left and right spring pieces.

[0008] Furthermore, the terminal frame has a ring-shaped contact spring at one end, and multiple through spring slots are evenly distributed on the side wall. The number of contact springs is the same as the number of spring slots. Multiple contact springs are respectively disposed in multiple spring slots, and one end of each contact spring is connected to the side wall of the corresponding spring slot near the tail connector.

[0009] Furthermore, the number of contact springs is four, and the four contact springs are disposed around the terminal frame.

[0010] Furthermore, a protrusion is provided on the inner wall of the terminal frame, the protrusion being located in the direction away from the tail plug of the contact spring, and the protrusion extending toward the axis of the terminal frame.

[0011] Furthermore, the spring-type charging terminal also includes a sealing ring, which is sleeved on the terminal frame and located between the contact spring and the tail plug.

[0012] Furthermore, a flow guide hole is provided on the terminal frame, the flow guide hole penetrates the side wall of the terminal frame, and the sealing ring closes the flow guide hole.

[0013] Furthermore, the number of the flow guide holes is three.

[0014] Furthermore, the sealing frame is also provided with a front sealing groove, a rear sealing groove and a fixing groove, the front sealing groove and the rear sealing groove are respectively located on opposite sides of the sealing ring; the fixing groove is located between the rear sealing groove and the tail plug.

[0015] This utility model also provides a charging socket, including a spring-type charging terminal and a socket housing, wherein the spring-type charging terminal is disposed inside the socket housing.

[0016] The beneficial effects of this utility model are as follows: By connecting the tail connector to the male terminal of the PCB board, the terminal tail does not require cable crimping, reducing production time. Furthermore, the tail connector connection method improves assembly efficiency, ensures a more stable and reliable connection, and prevents poor contact caused by terminal retraction. The tail connector structure is suitable for stamping processing, which helps reduce the overall cost of the socket. Additionally, the left and right spring contacts of the tail connector can adopt a large spring contact structure, ensuring a more reliable connection and further reducing the likelihood of poor contact. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the spring-loaded charging terminal in this utility model;

[0018] Figure 2 yes Figure 1 Schematic diagram of the terminal frame structure;

[0019] Figure 3 yes Figure 1 Top view;

[0020] Figure 4 yes Figure 1 Side view;

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Terminal frame; 2. Sealing ring;

[0023] 101. Protrusion; 102. Contact spring; 103. Drainage hole; 104. Sealing skeleton; 105. Fixing groove; 106. Tail connector; 107. Head dovetail buckle; 108. Middle dovetail buckle; 109. Tail dovetail buckle; 110. Left spring; 111. Right spring; 112. Front sealing groove; 113. Rear sealing groove; 201. Waterproof rib. Detailed Implementation

[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0025] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrally formed structures. Those skilled in the art can understand the specific meaning of these terms in this patent based on the specific circumstances.

[0026] like Figure 1-4 As shown, the present invention provides a spring-loaded charging terminal, including a terminal frame 1. The two ends of the terminal frame 1 are respectively provided with contact springs 102 and tail plugs 106. The contact springs 102 are used to contact the charging gun and form an electrical connection. The tail plugs 106 include a left spring 110 and a right spring 111. A gap is formed between the left spring 110 and the right spring 111 for plugging and engaging with the male terminal of the PCB board and forming an electrical connection. The contact springs 102 form an electrical connection with the left spring 110 and the right spring 111.

[0027] It is understandable that the gap shape formed by the male terminal of the PCB board and the left spring 110 and the right spring 111 is adapted to enable the male terminal of the PCB board to be inserted and mated with the gap to form an electrical connection.

[0028] It is understandable that, compared to traditional contact springs or springs, the connection method of plugging the tail connector 106 into the male connector on the PCB board ensures reliable connection and reduces the likelihood of backlash or poor contact. Furthermore, the left spring 110 and right spring 111 of the tail connector 106 can be directly formed by stamping, resulting in lower processing costs compared to traditional connection methods.

[0029] Furthermore, one end of both the left spring 110 and the right spring 111 is arc-shaped, and a gap is formed between the apexes of the arcs of the left spring 110 and the right spring 111.

[0030] Furthermore, the terminal frame 1 has a ring-shaped end for the contact spring 102, and multiple through spring slots are evenly distributed on the side wall. The number of contact springs 102 is the same as the number of spring slots. Multiple contact springs 102 are respectively disposed in multiple spring slots, and one end of each contact spring 102 is connected to the side wall of the corresponding spring slot in the direction near the tail connector 106.

[0031] Furthermore, there are four contact springs 102, which are arranged around the terminal frame 1.

[0032] Furthermore, the contact spring 102 extends toward the axis of the terminal frame 1.

[0033] It is understood that the charging gun can be inserted into the terminal frame 1 from the side where the contact spring 102 is located, and make contact with the contact spring 102 through the spring slot to form an electrical connection. At the same time, by utilizing the extension of the contact spring 102 towards the terminal frame 1, the charging gun, after being inserted into the terminal frame 1, squeezes the contact spring 102, causing the contact spring 102 to deform, thereby increasing the stability of the disengagement between the charging gun and the contact spring 102.

[0034] Furthermore, a protrusion 101 is provided on the inner wall of the terminal frame 1. The protrusion 101 is located in the direction away from the tail plug 106 of the contact spring 102, and the protrusion 101 extends in the direction close to the axis of the terminal frame 1.

[0035] It is understandable that the convex hull 101 is used to limit the maximum insertion angle of the charging gun needle, and can protect the contact spring 102 from excessive deformation and plastic deformation.

[0036] Furthermore, guide posts are also provided on the outer wall of the terminal frame 1.

[0037] It is understandable that the guide post serves to guide the spring-loaded charging terminal when it is inserted into the charging socket, and it can only be inserted when the guide post is aligned with the groove on the socket housing. In this way, the orientation of the tail connector 106 at the end of the terminal is fixed, which facilitates the insertion with the male connector on the PCB board.

[0038] Furthermore, the spring-type charging terminal also includes a sealing ring 2, which is sleeved on the terminal frame 1 and located between the contact spring 102 and the tail plug 106.

[0039] Furthermore, a flow guide hole 103 is provided on the terminal frame 1, the flow guide hole 103 penetrates the side wall of the terminal frame 1, and the sealing ring 2 seals the flow guide hole 103.

[0040] Furthermore, the number of guide holes 103 is three.

[0041] It can be understood that the sealing ring 2 is directly molded onto the terminal frame 1 through overmolding. That is, the sealing ring 2 is injection molded directly at the locations where the flow holes 103 are formed on the terminal frame 1. During the injection molding of the sealing ring 2, liquid adhesive can quickly fill the entire cavity through these flow holes 103. After the sealing ring is formed, these flow holes 103 also serve to fix the sealing ring. Simultaneously, the portion of the terminal frame 1 enclosed by the sealing ring 2 forms the sealing frame 104. The sealing frame 104 is completely enclosed by the sealing ring 2 and mainly serves to support the sealing ring 2, enabling it to achieve a better sealing effect.

[0042] Furthermore, the terminal frame 1 is also provided with a front sealing groove 112 and a rear sealing groove 113, which are located on opposite sides of the sealing ring 2.

[0043] It is understandable that the front sealing groove 112 and the rear sealing groove 113 are the planes where the upper and lower molds of the injection mold of the sealing ring 2 are closed, and they mainly serve to seal the glue and prevent glue overflow during injection.

[0044] Furthermore, a fixing groove 105 is also provided on the terminal frame 1.

[0045] It is understandable that the function of the fixing groove 105 is to fix the spring-loaded charging terminal inside the charging socket housing after it has been installed into the housing, thus preventing it from retracting. In actual assembly, a plastic part is used to block the end face of the fixing groove 105, thereby fixing the terminal inside the socket housing.

[0046] In this embodiment, the fixing groove 105 is located between the rear sealing groove 113 and the tail connector 106.

[0047] In this embodiment, the terminal skeleton 1 is formed by rolling, and a dovetail buckle structure is formed on the end face after forming, so as to fasten and fix the two end faces after rolling, forming a cylindrical terminal skeleton 1.

[0048] Specifically, after the terminal frame 1 is formed, a head dovetail buckle 107, a middle dovetail buckle 108 and a tail dovetail 109 are sequentially provided on the end face. The head dovetail buckle 107, the middle dovetail buckle 108 and the tail dovetail 109 are used to fix the rounded terminal frame 1 and prevent the terminal frame 1 from loosening during insertion and removal.

[0049] In this embodiment, after the electroplated terminal frame 1 is formed, it is electroplated, such as by nickel plating, silver plating and tin plating. It can be electroplated as a whole or partially. For example, by electroplating, the contact spring 102 and the tail plug 106 can be electrically connected. The terminal connected to the strip can be continuously electroplated.

[0050] After electroplating, the terminal frame 1 is coated with adhesive. This coating forms a sealing ring 2, which is tightly bonded to the terminal frame, achieving an IP67 protection rating. The sealing ring 2 has two waterproof ribs 201. When the terminal is inserted into the charging socket, the waterproof ribs 201 are press-fitted against the socket housing, causing deformation and sealing between the terminal and the socket housing.

[0051] In this embodiment, a charging socket is also provided, including a spring-type charging terminal and a socket housing, wherein the spring-type charging terminal is disposed inside the socket housing.

[0052] As can be seen from the above, this utility model eliminates the need for cable crimping at the terminal tail by connecting the tail connector to the male terminal of the PCB board, reducing production time. Furthermore, the tail connector connection method improves assembly efficiency, ensures a more stable and reliable connection, and prevents poor contact caused by terminal retraction. The tail connector structure is compatible with stamping processes, which helps reduce the overall cost of the socket. Additionally, the left and right spring contacts of the tail connector can utilize large spring contact structures to ensure a more reliable connection and further reduce the likelihood of poor contact.

[0053] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise expressly specified and limited, the terms "installed," "connected," or "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0055] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A stamped charging terminal, characterized by, The application relates to a spring piece type charging terminal.

2. The spring piece type charging terminal according to claim 1, wherein: one end of the left spring piece and the right spring piece is arc-shaped, and the gap is formed between the arc-shaped top points of the left spring piece and the right spring piece.

3. The spring piece type charging terminal according to claim 1, wherein: one end of the terminal skeleton provided with the contact spring is annular, and a plurality of spring piece grooves are uniformly distributed on the side wall; the number of the contact springs is the same as that of the spring piece grooves; the plurality of contact springs are arranged in the plurality of spring piece grooves respectively, and one end of each contact spring is connected to the side wall of the corresponding spring piece groove close to the tail plug-in connector.

4. The spring piece type charging terminal according to claim 3, wherein: the number of the contact springs is four, and the four contact springs are arranged around the terminal skeleton.

5. The spring piece type charging terminal according to claim 1, wherein: a convex is arranged on the inner wall of the terminal skeleton, the convex is located away from the tail plug-in connector in the direction of the contact spring, and the convex extends towards the direction close to the axis of the terminal skeleton.

6. The spring piece type charging terminal according to claim 1, further comprising a sealing ring, wherein: the sealing ring is sleeved on the terminal skeleton and located between the contact spring and the tail plug-in connector.

7. The spring piece type charging terminal according to claim 6, wherein: a flow guide hole is arranged on the terminal skeleton, the flow guide hole penetrates the side wall of the terminal skeleton, and the sealing ring seals the flow guide hole.

8. The spring piece type charging terminal according to claim 7, wherein: the number of the flow guide holes is three.

9. The spring piece type charging terminal according to claim 6, wherein: a front sealing glue groove, a rear sealing glue groove and a fixing groove are further arranged on the terminal skeleton, the front sealing glue groove and the rear sealing glue groove are respectively located on the opposite sides of the sealing ring, and the fixing groove is located between the rear sealing glue groove and the tail plug-in connector. The application also relates to a socket shell comprising the spring piece type charging terminal according to any one of claims 1-9. ​ ​ ​ ​ ​ ​ ​ ​ 10. A charging socket, characterized by: ​

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