Electric connector

Abstract

The utility model discloses an electric connector, comprising a housing, a tail cover and a terminal, the housing is internally provided with a terminal receiving cavity for receiving the terminal, the housing is internally provided with a terminal locking member, the tail cover is connected with a plectrum, when the tail cover is connected with the housing, the plectrum is connected with the terminal locking member, and the plectrum is connected with the terminal locking member. And the terminal locking piece can be pushed by the shifting piece to be close to the terminal until the terminal is locked in the terminal accommodating cavity. The electric connector provided by the utility model is suitable for high-voltage direct current, can be used as a high-voltage direct current charging socket, can effectively and reliably fix the terminal, and prevents the terminal locking piece from being automatically unlocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric connector, especially with terminal locking piece's electric connector. BACKGROUND

[0002] Electric connectors, as a kind of assembly providing electrical contact, have been widely used. With the rapid development of new energy vehicles, the demand for charging sockets compatible with new energy vehicles, as a kind of socket-side electric connectors, has also increased.

[0003] In the conventional charging socket, special tools and operation steps are required for terminal locking. After terminal locking, unlocking may occur during transportation, affecting terminal fixation. In the conventional structure, the terminal is usually fixed by screwing the needle plate of the terminal to the plastic shell. Due to the wire swinging at the tail of the socket, the terminal needs to be welded and crimped after the cable passes through the tail cover, which is troublesome in assembly operation and low in production efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an electric connector that can effectively and reliably fix the terminal.

[0005] To achieve the above-mentioned purpose, the utility model is implemented by the following technical scheme:

[0006] An electric connector includes a shell, a tail cover and a terminal. A terminal receiving cavity is formed in the shell to receive the terminal. A terminal locking piece is provided in the shell. A tab is connected to the tail cover. When the tail cover is connected to the shell, the terminal locking piece can be pushed towards the terminal by the tab until the terminal is locked in the terminal receiving cavity.

[0007] Optionally, the terminal locking piece is provided with a guide surface. The tab slides along the guide surface to push the terminal locking piece towards the terminal.

[0008] Optionally, the guide surface is an inclined surface, and / or the tab is wedge-shaped.

[0009] Further, at least one positioning column is provided in the shell. A positioning hole is formed in the terminal locking piece to match the positioning column. The positioning hole has a first contact surface and a second contact surface. Before the tail cover is connected to the shell, the positioning column contacts the first contact surface. After the tail cover is connected to the shell, the first contact surface is gradually pushed away from the positioning column with the terminal locking piece until the second contact surface contacts the positioning column.

[0010] Further, the terminal locking member is provided with a terminal clamping portion, and the terminal is provided with a clamping groove; the tail cover is connected to the shell, and the terminal clamping portion is clamped into the clamping groove.

[0011] Further, the terminal includes a DC terminal and a PE terminal, the terminal clamping portion includes a first terminal clamping portion and a second terminal clamping portion, the first terminal clamping portion is clamped with the clamping groove of the DC terminal, and the second terminal clamping portion is clamped with the clamping groove of the PE terminal.

[0012] Optionally, the first terminal clamping portion is in the form of an open arc, and the second terminal clamping portion is a through hole, and the hole diameter of the through hole is at least capable of allowing the PE terminal to pass through.

[0013] Further, a terminal cover is further included, the terminal cover is fixed in the shell, and a terminal through hole capable of allowing the terminal to pass through is formed in the terminal cover.

[0014] Further, a circuit board electrically connected with the terminal is further included, the circuit board is fixed in the shell, and an avoiding groove or an avoiding hole avoiding the terminal is formed in the circuit board.

[0015] Optionally, the tail cover is clamped with the shell through buckling.

[0016] Compared with the prior art, the electric connector provided by the utility model has at least the following beneficial effects:

[0017] The electric connector provided by the utility model is characterized in that the shell is provided with a terminal locking member, the tail cover is provided with a push piece, when the tail cover is connected to the shell, the terminal locking member can be pushed to the terminal by the push piece, until the terminal is locked in the terminal receiving cavity, and because the interference between the push piece and the terminal locking member always exists after the shell and the tail cover are connected, the terminal locking member cannot be unlocked by itself, so that the terminal can be effectively and reliably fixed. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 is an exploded view of the electric connector provided by the utility model embodiment;

[0020] Figure 2 is Figure 1 the structural schematic view of the middle shell;

[0021] Figure 3 is Figure 1 the structure diagram of the tail cover;

[0022] Figure 4 is Figure 1 the structure diagram of the terminal locking piece;

[0023] Figure 5 is Figure 1 the structure diagram of the terminal cover;

[0024] Figure 6 is Figure 1 the structure diagram of the circuit board;

[0025] Figure 7 is the structure diagram of the terminal before being fixed by the terminal locking piece in the embodiment of the utility model;

[0026] Figure 8 is the structure diagram of the terminal after being fixed by the terminal locking piece in the embodiment of the utility model;

[0027] Mark explanation:

[0028] tail cover; 101 - push piece; 2 - circuit board; 201 - avoiding groove; 3 - terminal cover; 301 - terminal via hole; 4 - terminal locking piece; 401 - guide surface; 402 - first terminal clamping part; 403 - second terminal clamping part; 404 - second contact surface; 405 - first contact surface; 5 - DC terminal; 6 - PE terminal; 7 - shell; 701 - positioning column; 702 - terminal receiving cavity; 8 - clamping groove. Specific implementation

[0029] The technical solutions in the embodiments of the disclosure / the application will be clearly and completely described below with reference to the drawings in the embodiments of the disclosure / the application. Obviously, the described embodiments are only part of the embodiments of the disclosure / the application, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, not as any limitation on the disclosure / the application and its application or use.

[0030] As Figure 1 shown, it is an electric connector provided by the embodiment of the utility model, mainly including shell 7, tail cover 1, terminal and terminal locking piece 4.

[0031] As Figure 2 shown, it is the structure diagram of the shell 7 provided by the embodiment of the utility model, and the shell 7 is provided with a terminal receiving cavity 702 for receiving and positioning the terminal.

[0032] After assembly, the terminal locking member 4 is arranged in the shell 7, and is used for fixing the terminal in the terminal receiving cavity 702. In the embodiment of the present application, the terminal locking member 4 does not interfere with the terminal before the terminal is installed, and after the terminal is inserted into the terminal receiving cavity 702, the terminal locking member 4 can interfere with the terminal by moving, so as to realize the fixation of the terminal. Specifically, as shown in Figure 3 The tail cover 1 is provided with a push piece 101, which can gradually push the terminal locking member 4 to move towards the terminal when the tail cover 1 is connected to the shell 7, until the terminal locking member 4 interferes with the terminal and locks the terminal in the terminal receiving cavity 702. After the tail cover 1 and the shell 7 are assembled in place, the interference force of the push piece 101 on the terminal locking member 4 always exists, so that the terminal locking member 4 cannot be unlocked by itself, thereby effectively and reliably fixing the terminal.

[0033] As shown in Figure 4 In the embodiment of the present application, the terminal locking member 4 is provided with a guide surface 401, and when the tail cover 1 is connected to the shell 7, the push piece 101 first contacts the guide surface 401. With the further mutual approach of the tail cover 1 and the shell 7, the push piece 101 will slide along the guide surface 401, and the force of the push piece 101 acting on the guide surface 401 exists in the horizontal direction, thereby pushing the terminal locking member 4 towards the terminal.

[0034] As an embodiment, it can be seen from Figure 4 that the guide surface 401 is an inclined surface. In the actual processing process, a wedge-shaped protrusion can be provided, and the inclined surface of the wedge-shaped protrusion can be used as the guide surface 401 of the present embodiment. As an equivalent deformation, the end of the push piece 101 can also be provided with a wedge-shaped structure, so that the tip of the wedge-shaped structure first contacts the guide surface 401, and with the gradual approach of the tail cover 1 and the shell 7, the push piece 101 gradually pushes the terminal locking member 4 to approach the terminal.

[0035] In order to improve the efficiency of subsequent assembly, the shell 7 is also provided with a positioning column 701, so as to avoid the interference of the terminal locking member 4 with the terminal before the terminal is fixed, and to ensure that the terminal locking member 4 is pushed into place after the terminal is fixed. For details, please refer to Figure 2 It can be seen from the figure that the positioning column 701 is arranged between the terminal receiving holes. However, it should be noted that the positioning column 701 can also be arranged at other positions as needed, and the number of the positioning column 701 is not limited to one, but can also be arranged at two or more positions as needed.

[0036] In order to enable the terminal locking member 4 to match the positioning column 701, a positioning hole is formed on the terminal locking member 4, and the positioning column 701 is always located in the positioning hole during the pushing process of the terminal locking member 4, thereby also playing a certain guiding role. Please refer toFigure 4 The positioning hole can be an elongated hole, and the hole wall close to the guide surface 401 is defined as the first contact surface 405, and the hole wall away from the guide surface 401 is defined as the second contact surface 404. As shown in Figure 7 , the positioning column 701 is in contact with the first contact surface 405 before the tail cover 1 is connected with the shell 7, so that interference of the terminal locking member 4 to the terminal installation can be avoided. As shown in Figure 8 , the first contact surface 405 is gradually pushed away from the positioning column 701 with the terminal locking member 4 after the tail cover 1 is connected with the shell 7, until the second contact surface 404 is in contact with the positioning column 701, so as to ensure that the terminal locking member 4 is pushed into place. As an equivalent modification, the positioning hole can also be replaced by a positioning groove.

[0037] In some embodiments, the terminal locking member 4 is provided with a terminal clamping portion, and the corresponding terminal is provided with a clamping groove 8. When the tail cover 1 is connected with the shell 7 into place, the terminal clamping portion can be clamped into the clamping groove 8, realizing the relative fixation of the terminal locking member 4 and the terminal. For details, please refer to Figure 8 . As shown in Figure 1 , the clamping groove 8 is an annular groove opened along the circumference of the terminal, which can prevent the terminal from moving axially after being fixed. It should be understood that the clamping groove 8 can also be of other shapes, such as a rectangular groove opened locally on the outer surface of the terminal, as long as the terminal clamping portion can be adapted to the clamping groove 8 and can limit the displacement of the terminal after clamping, which should be regarded as an equivalent modification of the present application.

[0038] The electric connector provided by the present embodiment is suitable for high-voltage direct current and can be used as a high-voltage direct current charging socket. Accordingly, the terminal can include two DC terminals 5 and one PE terminal 6. For this purpose, the terminal locking member 4 can be provided with one terminal clamping portion corresponding to each terminal, including a first terminal clamping portion 402 clamped with the clamping groove 8 of the DC terminal 5 and a second terminal clamping portion 403 clamped with the clamping groove 8 of the PE terminal 6. As shown in Figure 4 , if the clamping groove 8 on the terminal is provided as an annular groove, the first terminal clamping portion 402 can be provided as an open arc; and the second terminal clamping portion 403 can be provided as a through hole, the diameter of which is at least capable of allowing the PE terminal 6 to pass through. More specifically, after the PE terminal 6 passes through the through hole, there should still be a margin for the terminal locking member 4 to move in the through hole. At least before the terminal locking member 4 is pushed into place, the through hole should not interfere with the PE terminal 6. After the terminal is pushed into place, the hole wall of the through hole should have been clamped into the clamping groove 8 of the PE terminal 6, thereby fixing the PE terminal 6.

[0039] Please continue to refer to Figure 1The electric connector provided by the embodiment further comprises a terminal cover 3 for further limiting the periphery of the terminal, and the terminal cover 3 is fixed in the shell 7 after assembly. Figure 5 As shown in the figure, the terminal cover 3 is provided with a terminal via hole 301 through which the terminal can pass.

[0040] Continuing to refer to Figure 1 The electric connector provided by the embodiment further comprises a circuit board 2 electrically connected with the terminal, and the circuit board 2 is fixed in the shell 7 after assembly, and more specifically, the circuit board 2 and the terminal cover 3 can be fixed in the shell 7 by screws. Figure 6 As shown in the figure, the circuit board 2 is provided with a avoiding slot 201 or avoiding hole for avoiding the terminal.

[0041] As an embodiment, the tail cover 1 and the shell 7 are connected by buckling.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are used only to explain the relative position relationship, movement condition and the like between the components in a certain posture, and if the certain posture changes, the directional indication also changes accordingly. It is only for the convenience of describing the present disclosure / application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure / application.

[0043] In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present disclosure / application, unless otherwise specified and limited, the term "a plurality of" means two or more.

[0044] In the description of the present disclosure / application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure / application can be understood according to the specific circumstances.

[0045] The above merely preferred embodiments of the present disclosure / present application, it should be noted that for those of ordinary skill in the art, without departing from the technical principles of the present disclosure / present application, a number of improvements and variations can be made, which should be considered as the protection scope of the present disclosure / present application.

Claims

1. An electrical connector, comprising a housing, a tail cap, and terminals, wherein the housing has a terminal receiving cavity for receiving the terminals, characterized in that, The housing is provided with a terminal locking member, and the tail cover is connected with a lever. When the tail cover is connected to the housing, the terminal locking member can move closer to the terminal under the push of the lever until the terminal is locked in the terminal receiving cavity.

2. The electrical connector according to claim 1, characterized in that, The terminal locking member has a guide surface, and the lever pushes the terminal locking member closer to the terminal by sliding along the guide surface.

3. The electrical connector according to claim 2, characterized in that, The guide surface is inclined, and / or the paddle is wedge-shaped.

4. The electrical connector according to claim 1, 2, or 3, characterized in that, At least one positioning post is provided inside the housing. The terminal locking member has a positioning hole adapted to the positioning post. The positioning hole has a first contact surface and a second contact surface. Before the tail cover is connected to the housing, the positioning post is in contact with the first contact surface. After the tail cover is connected to the housing, the first contact surface is pushed away from the positioning post by the terminal locking member until the second contact surface contacts the positioning post.

5. The electrical connector according to claim 1, characterized in that, The terminal locking member is provided with a terminal latching part, and the terminal is provided with a latching groove; after the tail cover is connected to the housing, the terminal latching part is latched into the latching groove.

6. The electrical connector according to claim 5, characterized in that, The terminals include DC terminals and PE terminals. The terminal latching part includes a first terminal latching part and a second terminal latching part. The first terminal latching part latches with the latching groove of the DC terminal, and the second terminal latching part latches with the latching groove of the PE terminal.

7. The electrical connector according to claim 6, characterized in that, The first terminal latching part is an open arc shape; the second terminal latching part is a through hole, and the diameter of the through hole is at least large enough for the PE terminal to pass through.

8. The electrical connector according to claim 1, characterized in that, It also includes a terminal cover, which is fixed inside the housing and has a terminal through hole that allows the terminal to pass through.

9. The electrical connector according to claim 1, characterized in that, It also includes a circuit board electrically connected to the terminal, the circuit board being fixed inside the housing, and the circuit board having a clearance groove or clearance hole for avoiding the terminal.

10. The electrical connector according to claim 1, characterized in that, The tail cap is snapped into the housing.

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