Insertion piece type charging terminal and charging socket

Abstract

The utility model relates to an insert type charging terminal, which comprises a terminal framework, two ends of the terminal framework are respectively provided with a contact elastic sheet and a contact insert, the contact elastic sheet is electrically connected with the contact insert, the contact elastic sheet is used for contacting with a charging gun and forming electric connection, the contact insert is used for being matched with a female end of a PCB (printed circuit board) in an inserting manner, and the contact elastic sheet is electrically connected with the contact insert. And electric connection is formed. The utility model further provides a charging socket, by adopting the insert type charging terminal and the charging socket, the assembling difficulty and the working hours can be reduced, the wire outgoing of a connector can be realized, and meanwhile, the function and performance requirements of the charging socket can be met.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle charging technology, specifically a plug-in type charging terminal and 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 plug-in type 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 plug-in type charging terminal, including a terminal frame, with contact springs and contact plugs respectively provided at both ends of the terminal frame, the contact springs and the contact plugs being electrically connected, wherein the contact springs are used to contact the charging gun and form an electrical connection, and the contact plugs are used to plug into the female end of the PCB board and form an electrical connection.

[0007] Furthermore, the contact insert includes two connecting surfaces, which are located on opposite sides of the contact insert and are electrically connected to the contact spring, for contacting the female end of the PCB board and forming an electrical connection.

[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 contact insert.

[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 contact spring and extending towards the axis of the terminal frame.

[0011] Furthermore, guide posts are also provided on the outer wall of the terminal frame.

[0012] Furthermore, the plug-in charging terminal also includes a sealing ring, which is sleeved on the terminal frame and located between the contact spring and the contact plug.

[0013] 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.

[0014] Furthermore, the terminal 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 contact insert.

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

[0016] The beneficial effects of this invention are as follows: By connecting the contact insert to the female end of the PCB board, the terminal does not require a crimped cable, thus reducing production time. Furthermore, the contact insert connection method improves assembly efficiency, ensures a more stable and reliable connection, and prevents poor contact caused by terminal retraction. Simultaneously, the contact insert structure is compatible with stamping processes, which helps reduce the overall cost of the socket. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the plug-in 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. Guide post; 104. Drainage hole; 105. Sealing skeleton; 106. Fixing groove; 107. Contact insert; 108. Head dovetail buckle; 109. Middle dovetail buckle; 110. Tail dovetail buckle; 111. Front sealing groove; 112. Rear sealing groove; 113. Connecting surface; 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 plug-in type charging terminal, including a terminal frame 1. The two ends of the terminal frame 1 are respectively provided with contact springs 102 and contact plugs 107. The contact springs 102 and contact plugs 107 are electrically connected. The contact springs 102 are used to contact the charging gun and form an electrical connection, and the contact plugs 107 are used to plug into the female end of the PCB board and form an electrical connection.

[0027] It is understandable that the shape of the female end of the PCB board terminal is adapted to the shape of the contact insert 107, so that the contact insert 107 can be plugged into the female end and form an electrical connection.

[0028] Understandably, compared to traditional contact springs or spring-loaded connections, the insertion of the contact piece 107 into the female end ensures reliable connection and reduces the likelihood of retraction or poor contact. Furthermore, the contact piece 107 can be directly formed by stamping, resulting in lower processing costs compared to traditional connection methods.

[0029] Furthermore, the contact insert 107 includes two connecting surfaces 113, which are located on opposite sides of the contact insert 107 and are electrically connected to the contact spring 102 for contacting the female end of the PCB board and forming an electrical connection.

[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 close to the contact insert 107.

[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 contact spring 102 and the contact insert 107, 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 depth of the charging gun needle, and can protect the contact spring 102 from excessive deformation and plastic deformation.

[0036] Furthermore, a guide post 103 is also provided on the outer wall of the terminal frame 1.

[0037] It is understood that the guide post 103 serves to guide the plug-in charging terminal when it is inserted into the charging socket, and it can only be inserted when the guide post 103 is aligned with the groove on the socket housing. In this way, the direction of the contact tab 107 at the tail of the terminal is fixed, which facilitates the insertion with the female terminal on the PCB board.

[0038] Furthermore, the plug-in 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 contact plug 107.

[0039] Furthermore, a flow guide hole 104 is provided on the terminal frame 1, the flow guide hole 104 penetrates the side wall of the terminal frame 1, and the sealing ring 2 seals the flow guide hole 104.

[0040] Furthermore, the number of guide holes 104 is 3.

[0041] It can be understood that the sealing ring 2 is directly molded onto the sealing skeleton 1 through overmolding. That is, the sealing ring 2 is injection molded directly at the locations where the flow holes 104 are formed on the sealing skeleton 1. During the injection molding of the sealing ring 2, liquid adhesive can quickly fill the entire cavity through these flow holes 104. After the sealing ring is formed, these flow holes 104 also serve to fix the sealing ring. Simultaneously, the portion of the terminal skeleton 1 enclosed by the sealing ring 2 forms the sealing skeleton 105. The sealing skeleton 105 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 111 and a rear sealing groove 112, which are located on opposite sides of the sealing ring 2.

[0043] It is understandable that the front sealing groove 111 and the rear sealing groove 112 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 106 is also provided on the terminal frame 1.

[0045] It is understandable that the function of the fixing groove 106 is to fix the plug-in 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 106, which achieves the fixation of the terminal inside the socket housing.

[0046] In this embodiment, the fixing groove 106 is located between the rear sealing groove 112 and the contact insert 107.

[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 108, a middle dovetail buckle 109 and a tail dovetail 110 are sequentially provided on the end face. The head dovetail buckle 108, the middle dovetail buckle 109 and the tail dovetail 110 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 terminal frame 1 is formed, it is electroplated, such as nickel plating, silver plating and tin plating. It can be electroplated as a whole or partially. For example, the contact spring 102 and the contact insert 107 are electrically connected by electroplating, and 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 plug-in charging terminal and a socket housing, wherein the plug-in charging terminal is disposed inside the socket housing.

[0052] As can be seen from the above, this utility model, through the connection method of the contact insert and the female end of the PCB board, eliminates the need for crimping cables at the tail of the terminal, thus reducing production time. Furthermore, the contact insert connection method improves assembly efficiency, ensures a more stable and reliable connection, and prevents poor contact caused by terminal retraction. Simultaneously, the structure of the contact insert is compatible with stamping processes, which helps reduce the overall cost of the socket.

[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. An insert charging terminal characterized by, The terminal skeleton is provided with a contact spring and a contact tab at both ends, and the contact spring is electrically connected with the contact tab, wherein the contact spring is used to contact and form electrical connection with the charging gun, and the contact tab is used to contact and form electrical connection with the female end of the PCB board.

2. The tab-type charging terminal according to claim 1, characterized in that: the contact tab comprises two connecting surfaces, which are located on opposite sides of the contact tab and are electrically connected with the contact spring, and are used to contact and form electrical connection with the female end of the PCB board.

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

4. The tab-type charging terminal according to claim 3, characterized in that: the number of the contact springs is four, and the four contact springs are arranged around the terminal skeleton.

5. The tab-type charging terminal according to claim 1, characterized in that: a convex is arranged on the inner wall of the terminal skeleton, the convex is located away from the contact tab, and the convex extends towards the axis of the terminal skeleton.

6. The tab-type charging terminal according to claim 1, characterized in that: a guide column is further arranged on the outer wall of the terminal skeleton.

7. The tab-type charging terminal according to claim 1, characterized in that: the tab-type charging terminal further comprises a sealing ring, the sealing ring is sleeved on the terminal skeleton, and is located between the contact spring and the contact tab.

8. The tab-type charging terminal according to claim 7, characterized in that: 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.

9. The tab-type charging terminal according to claim 7, characterized in that: 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 located on opposite sides of the sealing ring, and the fixing groove is located between the rear sealing glue groove and the contact tab. The tab-type charging terminal and the socket shell according to any one of claims 1-9 are included, and the tab-type charging terminal is arranged in the socket shell.

10. A charging socket, characterized by: ​

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