Reed type charging terminal and charging socket

Abstract

The utility model relates to a reed type charging terminal, which comprises a terminal framework, two ends of the terminal framework are respectively provided with a contact spring and a tail connecting assembly, the tail connecting assembly comprises a plurality of connecting reeds and an annular connecting sheet, the plurality of connecting reeds are arc-shaped, and the annular connecting sheet is arranged on the contact spring. The annular connecting piece is arranged on the terminal framework and is arranged in a surrounding mode in the axis direction of the terminal framework, the two ends of the multiple connecting reeds are connected to the terminal framework and the annular connecting piece respectively and used for being matched with a male terminal of a PCB in an inserted mode to form electric connection, and the contact elastic piece is used for making contact with a charging gun to form electric connection. The utility model also provides a charging socket, by adopting the reed 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] The utility model relates to new energy automobile charging technical field, concretely is a reed formula charging terminal and charging socket. BACKGROUND

[0002] The national standard alternating current charging socket has two signal terminals with a diameter of 3, which are CC and CP respectively. The direct current socket has six signal terminals with a diameter of 3, which are A+ / A- / S+ / S- / CC1 / CC2 respectively. These signal terminals need to be connected with the vehicle-mounted controller. Before, most of the connection modes are to press the cable at the tail of the signal terminal, and the other end of the cable is connected with the vehicle-mounted connector. The adverse effect of this connection mode is that the socket assembly and sealing are relatively troublesome.

[0003] The current mainstream connection mode is to connect the signal terminal with the PCB board, and several lead angles are designed on the PCB board to connect the connector mode wire. In this way, the assembly difficulty can be greatly reduced, the assembly efficiency can be improved, and the sealing performance can be improved.

[0004] However, the existing terminal connected with the PCB board is mostly connected with the PCB board in the mode of contact spring piece or spring, and this mode is prone to poor contact between the terminal and the PCB board. INVENTION CONTENTS

[0005] The utility model provides a reed formula charging terminal and charging socket to solve the problem of terminal and PCB board connection in view of the technical problems existing in the prior art.

[0006] The technical scheme for solving the above technical problems is as follows: a reed formula charging terminal, comprising a terminal skeleton, a contact spring piece and a tail connecting assembly are arranged at two ends of the terminal skeleton respectively, the tail connecting assembly comprises a connecting spring piece and an annular connecting sheet, the number of the connecting spring pieces is multiple, the connecting spring pieces are all arc-shaped and are arranged around along the axis direction of the terminal skeleton, and the top of the arc-shaped connecting spring pieces all faces the axis direction of the terminal skeleton, wherein the two ends of the connecting spring pieces are connected to the terminal skeleton and the annular connecting sheet respectively to form a male terminal slot, which is used for plug-in cooperation with the male terminal of the PCB board and forms electrical connection, the contact spring piece is used for contacting the charging gun to form electrical connection and forms electrical connection with the connecting spring pieces.

[0007] Further, the number of the contact spring pieces is seven.

[0008] Further, the side wall of the terminal skeleton is further provided with an elastic positioning sheet, and the elastic positioning sheet and the side wall of the terminal skeleton form an included angle.

[0009] Further, one end of the terminal skeleton is provided with a contact spring, and a plurality of spring slots are uniformly distributed on the side wall of the contact spring, the number of the contact springs is the same as that of the spring slots, and the plurality of contact springs are arranged in the plurality of spring slots respectively, and one end of each contact spring is connected to the side wall of the corresponding spring slot close to the tail connecting assembly.

[0010] Further, the number of the contact springs is four, and the four contact springs are arranged around the terminal skeleton.

[0011] Further, a convex is arranged on the inner wall of the terminal skeleton, the convex is located away from the tail connecting assembly, and the convex extends towards the direction close to the axis of the terminal skeleton.

[0012] Further, the reed 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 tail connecting assembly.

[0013] Further, 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.

[0014] Further, a front sealing glue groove and a rear sealing glue groove are further arranged on the terminal skeleton, and the front sealing glue groove and the rear sealing glue groove are located on opposite sides of the sealing ring respectively.

[0015] The utility model also provides a charging socket, including reed type charging terminal and socket shell, the reed type charging terminal is arranged in the socket shell.

[0016] The utility model discloses the beneficial effects are: through the connection mode of tail connecting assembly and PCB board male terminal plug-in, realize that terminal tail does not need to press the cable, reduce production working hours.And, the connection mode of tail connecting assembly can improve assembly efficiency, and the connection is more stable and reliable, prevents the poor contact that appears when the terminal retreats.The structure of connecting spring in tail connecting assembly is adapted to the processing mode of stamping forming, and is favorable for reducing the overall cost of socket. DRAWINGS

[0017] Figure 1 It is the structure schematic view of the reed type charging terminal in the utility model;

[0018] Figure 2 It is Figure 1 the terminal skeleton structure schematic view in the utility model;

[0019] Figure 3 It is Figure 1 the top view of the utility model;

[0020] Figure 4 It isFigure 1 side view of the charging terminal;

[0021] Figure 5 is a schematic view of the position relationship of the leaf spring type charging terminal in the charging socket.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 1, terminal skeleton; 2, sealing ring;

[0024] 101, convex envelope; 102, contact spring; 103, flow guide hole; 104, sealing skeleton; 106, tail connecting assembly; 107, head dovetail buckle; 108, middle dovetail buckle; 109, tail dovetail buckle; 110, front sealing glue groove; 111, rear sealing glue groove; 112, connecting spring; 113, annular connecting piece; 114, elastic limiting piece; 201, waterproof rib position. DETAILED DESCRIPTION

[0025] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model.

[0026] It should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" and "connecting" should be broadly understood, for example, it can be fixedly connected, it can also be detachably connected, and it can also be an integrally formed structure. For ordinary skilled in the art, the specific meaning of such terms in this patent can be understood according to the specific circumstances.

[0027] As shown in Figures 1-5 The utility model provides a leaf spring type charging terminal, including terminal skeleton 1, the both ends of terminal skeleton 1 are provided with contact spring 102 and tail connecting assembly 106 respectively, tail connecting assembly 106 includes connecting spring 112 and annular connecting piece 113, the number of connecting spring 112 is multiple, multiple connecting spring 112 all are arc-shaped, and are arranged along the axis direction of terminal skeleton 1, and the top of the arc of multiple connecting spring 112 all faces the axis direction of terminal skeleton 1, wherein, the both ends of multiple connecting spring 112 are connected on terminal skeleton 1 and annular connecting piece 113 respectively, form male terminal slot, for with the male terminal of PCB board and form the electric connection of plug-in cooperation, contact spring 102 is used to form the electric connection with the contact of charging gun, and forms the electric connection with multiple connecting spring 112.

[0028] It can be understood that the male terminal slot formed by the male terminal of PCB board and multiple connecting spring 112 is shape-fitted, so that the male terminal of PCB board can be plug-in cooperated with the male terminal slot and form an electrical connection.

[0029] It can be understood that, compared with the traditional bullet or spring connection mode, the tail connection assembly 106 is connected with the PCB board male connector, which can ensure the reliability of the connection and is not easy to back off and cause poor contact.

[0030] Further, the number of connecting springs 112 is seven.

[0031] Further, one end of the terminal skeleton 1 provided with the contact spring 102 is annular, and a plurality of spring grooves are uniformly distributed on the side wall. The number of contact springs 102 is the same as the number of spring grooves, and a plurality of contact springs 102 are arranged in the plurality of spring grooves, and one end of each contact spring 102 is connected to the side wall of the corresponding spring groove close to the tail connection assembly 106.

[0032] Further, the number of contact springs 102 is four, and the four contact springs 102 are arranged around the terminal skeleton 1.

[0033] Further, the contact spring 102 extends towards the direction close to the axis of the terminal skeleton 1.

[0034] It can be understood that the charging gun can be inserted into the terminal skeleton 1 from the side of the terminal skeleton 1 provided with the contact spring 102, and contact with the contact spring 102 through the spring groove to form an electrical connection. At the same time, by extending the contact spring 102 towards the direction close to the terminal skeleton 1, when the charging gun is inserted into the terminal skeleton 1, the contact spring 102 is extruded, so that the contact spring 102 is deformed, thereby increasing the stability of the charging gun and the contact spring 102.

[0035] Further, the inner wall of the terminal skeleton 1 is provided with a convex 101, the convex 101 is located away from the tail connection assembly 106 direction of the contact spring 102, and the convex 101 extends towards the direction close to the axis of the terminal skeleton 1.

[0036] It can be understood that the convex 101 is used to limit the maximum angle of insertion of the charging gun needle, which can protect the contact spring 102 from excessive deformation and plastic deformation.

[0037] Further, the outer wall of the terminal skeleton 1 is also provided with a guide column.

[0038] It can be understood that the guide column is used as a guide when the spring-type charging terminal is loaded into the charging socket, and only when the guide column and the groove on the socket shell are aligned can it be loaded.

[0039] Further, the side wall of the terminal skeleton 1 is also provided with an elastic positioning piece 114, and the elastic positioning piece 114 and the side wall of the terminal skeleton 1 form an included angle.

[0040] It can be understood that the elastic positioning piece 114 is used to limit the spring-type charging terminal when it is inserted into the charging socket, that is, when the spring-type charging terminal is inserted into the charging socket, the elastic positioning piece 114 is pressed to be parallel to the side wall of the terminal skeleton 1, and when the spring-type charging terminal is completely inserted into the charging socket, the elastic positioning piece 114 is released and forms an included angle between the side walls of the terminal skeleton 1, and the end of the elastic positioning piece 114 away from the terminal skeleton 1 is in contact with a step surface in the charging socket, thereby playing a role in pre-fixing the terminal and preventing back-off. In this way, the direction of the tail connecting assembly 106 of the tail part of the terminal is fixed, which is convenient for plugging with the male terminal of the PCB.

[0041] Further, the spring-type charging terminal further comprises a sealing ring 2, which is sleeved on the terminal skeleton 1 and located between the contact spring 102 and the tail connecting assembly 106.

[0042] Further, the terminal skeleton 1 is provided with a flow guide hole 103, which penetrates the side wall of the terminal skeleton 1, and the sealing ring 2 seals the flow guide hole 103.

[0043] Further, the number of flow guide holes 103 is three.

[0044] It can be understood that the sealing ring 2 is directly formed on the terminal skeleton 1 by encapsulation. That is, the sealing ring 2 is injection molded at the position where the flow guide hole 103 of the terminal skeleton 1 is formed, and when the sealing ring 2 is injection molded, the liquid glue can quickly fill the entire cavity through the flow guide holes 103. After the sealing ring is formed, the flow guide holes 103 can also play a role in fixing the sealing ring. At the same time, the part of the terminal skeleton 1 wrapped by the sealing ring 2 forms a sealed skeleton 104, which is completely wrapped by the sealing ring 2 and mainly plays a role in supporting the sealing ring 2, so that the sealing ring 2 achieves better sealing effect.

[0045] Further, the terminal skeleton 1 is further provided with a front glue sealing groove 110 and a rear glue sealing groove 111, which are respectively located on opposite sides of the sealing ring 2.

[0046] It can be understood that the front glue sealing groove 110 and the rear glue sealing groove 111 are the planes of the upper and lower molds of the injection mold of the sealing ring 2, which mainly play a role in sealing glue to prevent overflow during injection.

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

[0048] Specifically, the terminal skeleton 1 is provided with a head dovetail buckle 107, a middle dovetail buckle 108 and a tail dovetail 109 in sequence on the end face after forming, the terminal skeleton 1 is fixed after being circled through the head dovetail buckle 107, the middle dovetail buckle 108 and the tail dovetail 109, and the terminal skeleton 1 is prevented from loosening in the plugging process.

[0049] In the embodiment, the terminal skeleton 1 is plated after being formed, the plating includes nickel plating, silver plating and tin plating, and the plating can be integral or partial, for example, the contact spring 102 is electrically connected with the tail connecting assembly 106 through plating, and the terminal can be continuously plated with the material belt.

[0050] After plating, the terminal skeleton 1 is encapsulated. After encapsulation, the sealing ring 2 is formed, the sealing ring 2 is tightly bonded with the terminal skeleton, and the protection level of IP67 can be achieved. The sealing ring 2 has two waterproof rib positions 201. When the terminal is installed in the charging socket, the waterproof rib position 201 is in interference fit with the socket shell, the waterproof rib position is deformed, and the sealing of the terminal and the socket shell is achieved.

[0051] In the embodiment, a charging socket is also provided, which includes the reed type charging terminal and the socket shell, and the reed type charging terminal is arranged in the socket shell.

[0052] As can be seen from the above, the tail connecting assembly is connected with the male terminal of the PCB through the connection mode, the tail of the terminal does not need to be crimped with the cable, and the production time is reduced. Moreover, the connection mode of the tail connecting assembly can improve the assembly efficiency, the connection is more stable and reliable, and poor contact caused by the terminal back-off is prevented. The structure of the connecting spring in the tail connecting assembly is suitable for the processing mode of stamping forming, and is beneficial to reducing the overall cost of the socket.

[0053] It should be noted that in this document, the terms "comprising", "containing", or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that comprises a list of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such process, method, article, or apparatus. Unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0054] While the preferred embodiments of the application have been described, those skilled in the art will recognize that the application can be practiced with modification and alteration within the spirit and scope of the application. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive. The scope of the application is indicated by the appended claims, rather than by the foregoing description.

[0055] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims, the application can be practiced otherwise than as specifically described.

Claims

1. A spring tab charging terminal characterized by, The terminal skeleton is provided with contact springs and tail connecting assemblies at both ends, respectively. The tail connecting assembly comprises connecting springs and a ring-shaped connecting piece. The connecting springs are in a number of multiple, all in an arc shape, and are arranged in a ring around the axis direction of the terminal skeleton. The top of the arc-shaped connecting springs all faces the axis direction of the terminal skeleton. The two ends of the connecting springs are connected to the terminal skeleton and the ring-shaped connecting piece, respectively, to form a male terminal slot for mating with the male terminal of the PCB board and forming an electrical connection. The contact springs are used to contact the charging gun to form an electrical connection and are electrically connected to the connecting springs.

2. The spring-type charging terminal according to claim 1, characterized in that: the number of the contact springs is seven.

3. The spring-type charging terminal according to claim 1, characterized in that: the side wall of the terminal skeleton is further provided with an elastic positioning piece, and the elastic positioning piece and the side wall of the terminal skeleton form an included angle.

4. The spring-type charging terminal according to claim 1, characterized in that: one end of the terminal skeleton provided with the contact springs is annular, and the side wall is uniformly distributed with a plurality of through spring grooves. The number of the contact springs is the same as the number of the spring grooves. 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 tail connecting assembly.

5. The spring-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.

6. The spring-type charging terminal according to claim 1, characterized in that: the inner wall of the terminal skeleton is provided with a convex bump, which is located away from the tail connecting assembly and extends towards the axis of the terminal skeleton.

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

8. The spring-type charging terminal according to claim 7, characterized in that: the terminal skeleton is provided with a flow guide hole, which penetrates the side wall of the terminal skeleton, and the sealing ring seals the flow guide hole.

9. The spring-type charging terminal according to claim 7, characterized in that: the terminal skeleton is further provided with a front sealing glue groove and a rear sealing glue groove, which are located on the opposite sides of the sealing ring, respectively. The spring-type charging terminal according to any one of claims 1-9 and a socket shell are included. The spring-type charging terminal is arranged in the socket shell. ​ ​ ​ ​ ​ ​ ​ ​ 10. A charging socket, characterized by: ​

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