Self-locking terminal

Abstract

The utility model belongs to the technical field of terminals, and particularly relates to a self-locking terminal, which comprises a terminal main body with an inner cavity and an elastic sheet, the terminal main body is provided with a sliding groove communicated with the inner cavity, the middle part of the sliding groove protrudes to form a step, the sliding groove is divided into a locking groove and an unlocking groove which are communicated with each other by the step, one end of the elastic sheet is fixed with the terminal main body, and the other end of the elastic sheet is fixed with the terminal main body. The other end of the elastic piece extends into the sliding groove from the inner cavity, the end portion of the elastic piece protrudes to form a locking portion used for abutting against the step to lock the elastic piece, and the middle of the elastic piece is bent to protrude towards one side away from the terminal body to form a contact portion making contact with an external connecting piece. According to the utility model, the sliding groove is divided into the locking groove and the unlocking groove which are communicated with each other through the step on the terminal main body, the locking and unlocking of the terminal are realized through the matching of the locking part on the elastic sheet, the locking groove and the unlocking groove, other parts are not needed, the structure is simple, and the reliability is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of terminals, and particularly relates to a self-locking terminal. Background Art

[0002] A terminal generally includes a main body and a spring piece. When the spring piece contacts an external connecting member, the two are electrically connected to enable corresponding functions. When the two are separated, the corresponding functions are turned off. For example, for the heater of the rearview mirror of an automobile, in the locked state of the terminal, it has no heating function. If the spring piece is activated, it has a heating function. In view of this, it is necessary to design a self-locking terminal to achieve the locking and unlocking of the terminal. Summary of the Utility Model

[0003] In order to solve the above technical problems, the technical solution adopted is: a self-locking terminal, including a terminal main body with an inner cavity, and the terminal main body is provided with a chute communicating with the inner cavity. A step protrudes in the middle of the chute, and the step divides the chute into a locked groove and an unlocked groove that communicate with each other;

[0004] And a spring piece, one end of which is fixed to the terminal main body, and the other end extends into the chute from the inner cavity and a locking portion is formed by protruding at its end for abutting against the step to lock the spring piece. The middle of the spring piece is bent to protrude toward the side away from the terminal main body to form a contact portion for contacting the external connecting member.

[0005] Further, a limiting portion is formed by protruding on the spring piece for abutting against the side wall of the terminal main body to limit the length of the spring piece extending into the inner cavity.

[0006] Further, one side of the step is inclined to form a first guiding inclined surface, and the locking portion has a second guiding inclined surface that cooperates with the first guiding inclined surface.

[0007] Further, the side wall surface of the contact portion close to the terminal main body is recessed to form a convex bump on the side wall surface away from the terminal main body.

[0008] Further, the terminal main body is provided with a through hole communicating with the inner cavity for a push rod to extend into to push the locking portion away from the step.

[0009] Further, the extending length of the unlocked groove is greater than the extending length of the locked groove.

[0010] Further, an avoidance groove for avoiding the spring piece is provided on the side of the terminal main body close to the spring piece.

[0011] Further, there are two chutes, and the two chutes are symmetrically distributed. There are two limiting portions, and the two limiting portions are also symmetrically distributed.

[0012] Further, the chute is an arc-shaped structure.

[0013] Furthermore, the top of the terminal body is a suction plane for the suction head to adsorb, and the bottom is a welding plane for welding and fixing with the PCB board.

[0014] The beneficial effects of the present utility model are as follows: The present utility model uses the step on the terminal body to divide the sliding groove into a locked groove and an unlocked groove that communicate with each other, and realizes the locking and unlocking of the terminal through the cooperation of the locking part on the elastic piece with the locked groove and the unlocked groove, without the need for other components, with a simple structure and high reliability.

[0015] Other features and advantages of the present application will become clear from the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. Description of the Drawings

[0016] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0017] Figure 1 is a three-dimensional structure diagram of the first perspective of the present utility model in the locked state;

[0018] Figure 2 is a three-dimensional structure diagram of the second perspective of the present utility model in the locked state;

[0019] Figure 3 is the front view of the present utility model in the locked state;

[0020] Figure 4 is a three-dimensional structure diagram of the present utility model in the free state;

[0021] Figure 5 is the front view of the present utility model in the free state;

[0022] Figure 6 is a three-dimensional structure diagram of the present utility model in the working state;

[0023] Figure 7 is the front view of the present utility model in the working state;

[0024] In the figure:

[0025] 1. Terminal body; 101. Inner cavity; 102. Sliding groove; 1021. Locked groove; 1022. Unlocked groove; 1023. Step; 1024. First guiding inclined surface; 103. Through hole; 104. Avoidance groove; 105. Suction plane; 106. Welding plane;

[0026] 2. Elastic piece; 201. Locking part; 2011. Second guiding inclined surface; 202. Contact part; 2021. Convex bump; 203. Limiting part. Detailed Embodiments

[0027] The present utility model will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner. Therefore, they only show the components related to the present utility model. Directions and references (such as up, down, left, right, etc.) can only be used to assist in the description of the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalents.

[0028] As Figures 1-7 shown, a self-locking terminal includes:

[0029] A terminal body 1 having an inner cavity 101, and a chute 102 communicating with the inner cavity 101 is provided on the terminal body 1. A step 1023 protrudes in the middle of the chute 102. The step 1023 divides the chute 102 into a locked groove 1021 and an unlocked groove 1022 that communicate with each other. That is, the height of the step 1023 is less than the height of the chute 102 so that a channel is formed between the step 1023 and the chute 102 wall opposite thereto;

[0030] And a spring piece 2, one end of which is fixed to the terminal body 1, and the other end extends into the chute 102 from the inner cavity 101 and a locking portion 201 for abutting against the step 1023 to lock the spring piece 2 protrudes at its end. The unlocked groove 1022 is located on the side close to the spring piece 2, and the locked groove 1021 is located on the side away from the spring piece 2. The middle of the spring piece 2 is bent to protrude toward the side away from the terminal body 1 to form a contact portion 202 for contacting an external connector; when a force is applied to the contact portion 202, the spring piece 2 overcomes its own elastic force to make the locking portion 201 cross the step 1023 and enter the locked groove 1021 from the unlocked groove 1022. When the force is withdrawn, at this time, the locking portion 201 abuts against the step 1023, and the terminal is in a self-locked state; when a force is applied to the locking portion 201 to make it disengage from the step 1023, the spring piece 2 resets, and the locking portion 201 enters the unlocked groove 1022 from the locked groove 1021, and the terminal is in an unlocked state.

[0031] In the initial state, the locking portion 201 abuts against the step 1023. At this time, the locking portion 201 is located in the locked groove 1021, and the contact portion 202 is separated from the external connector. At this time, the terminal is in a self-locked state; when a force is applied to the spring piece 2 to make the locking portion 201 cross the step 1023 and enter the unlocked groove 1022 from the locked groove 1021, at this time, the contact portion 202 moves in the direction away from the terminal body 1 (i.e., the direction of the external connector). At this time, the terminal is in a free state. When the contact portion 202 contacts the external connector, the contact portion 202 is in close contact with the external connector under the elastic force of the spring piece 2 to achieve conduction. At this time, the terminal is in a working state.

[0032] In some examples, a limiting portion 203 is formed protruding on the elastic piece 2 for abutting against the side wall of the terminal body 1 to limit the length of the elastic piece 2 extending into the inner cavity 101. When the limiting portion 203 abuts against the terminal body 1, the locking portion 201 is located inside the locking groove 1021, and the limiting portion 203 can limit the further extension of the elastic piece 2.

[0033] In some examples, the step 1023 is located on the lower groove wall of the sliding groove 102, and one side thereof is inclined downward from top to bottom towards the direction close to the contact portion 201 to form a first guiding inclined surface 1024. The locking portion 201 has a second guiding inclined surface 2011 that cooperates with the first guiding inclined surface 1024. The cooperation between the first guiding inclined surface 1024 and the second guiding inclined surface 2011 is conducive to the locking portion 201 entering the locking groove 1021 from the unlocking groove 1022. Of course, the step 1023 can also be located on the upper groove wall. At this time, the first guiding inclined surface 1024 thereon is inclined downward from top to bottom towards the direction away from the contact portion 201.

[0034] In some examples, one side wall surface of the contact portion 202 close to the terminal body 1 is recessed to form a convex bump 2021 protruding on the side wall surface away from the terminal body 1. The convex bump 2021 can improve the contact effectiveness with the external connecting member.

[0035] In some examples, as Figure 3 shown, the terminal body 1 is provided with a through hole 103 communicating with the inner cavity 101 for a push rod to extend into to push the locking portion 201 away from the step 1023. When unlocking is required, the push rod extends into the inner cavity 101 from the through hole 103 to push the locking portion 201 away from the step 1023, so that it enters the unlocking groove 1022 to achieve unlocking; the position of the through hole 103 corresponds to the position of the step 1023. When the step 1023 is located on the lower groove wall of the sliding groove 102, the through hole 103 is located at the bottom of the terminal body 1, and the push rod extends into the inner cavity 101 from bottom to top; when the step 1023 is located on the upper groove wall of the sliding groove 102, the through hole 103 is located at the top of the terminal body 1, and the push rod extends into the inner cavity 101 from top to bottom.

[0036] In some examples, the extending length of the unlocking groove 1022 is greater than the extending length of the locking groove 1021, so that the elastic piece 2 obtains a greater degree of freedom in the free state.

[0037] In some examples, an avoidance groove 104 for avoiding the elastic piece 2 is provided on one side of the terminal body 1 close to the elastic piece 2, so as to prevent interference between the elastic piece 2 and the terminal body 1 during the process of the locking portion 201 entering the locking groove 1021 from the unlocking groove 1022.

[0038] In some examples, there are two sliding grooves 102, and the two sliding grooves 102 are symmetrically distributed. There are two limiting parts 203, and the two limiting parts 203 are also symmetrically distributed. The two sliding grooves 102 correspond to the two limiting parts 203 one by one, and each limiting part 203 slides in the corresponding sliding groove 102.

[0039] In some examples, the sliding groove 102 is an arc-shaped structure to match the movement track of the elastic piece 2.

[0040] In some examples, the top of the terminal body 1 is a suction plane 105 for the suction head to adsorb, and the bottom is a welding plane 106 for welding and fixing with the PCB board. There are two opposite side walls connecting the two. The sliding groove 102 is opened on the side wall, and the side wall can support the suction plane 105 to prevent the suction head from pressing down on this surface and causing it to concave and deform, thus affecting the suction stability.

[0041] Working principle:

[0042] As Figures 1-3 shown, in the initial state, the locking part 201 abuts against the step 1023. At this time, the locking part 201 is located in the locking groove 1021, and the contact part 202 is separated from the external connecting part. At this time, the terminal is in a self-locking state; as Figure 4 and Figure 5 shown, when the push rod is inserted into the inner cavity 101 from the through hole 103 to push the locking part 201 away from the step 1023, the locking part 201 crosses the step 1023 and enters the unlocking groove 1022 from the locking groove 1021 through the channel. At this time, the contact part 202 moves in the direction away from the terminal body 1 (i.e., the direction of the external connecting part). At this time, the terminal is in a free state. When the contact part 202 contacts the external connecting part, the contact part 202 is closely attached to the external connecting part under the elastic force of the elastic piece 2 to achieve conduction. At this time, the terminal is in a working state, as Figure 6 and Figure 7 shown.

[0043] Based on the ideal embodiments of the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A self-locking terminal, characterized in that: Comprising: A terminal body (1) having an inner cavity (101), and the terminal body (1) is provided with a chute (102) communicating with the inner cavity (101). A step (1023) protrudes in the middle of the chute (102), and the step (1023) divides the chute (102) into a communicating locking groove (1021) and an unlocking groove (1022); And a spring piece (2), one end of which is fixed to the terminal body (1), and the other end extends into the chute (102) from the inner cavity (101), and a locking portion (201) for abutting against the step (1023) to lock the spring piece (2) protrudes at its end. The middle of the spring piece (2) is bent to protrude towards the side away from the terminal body (1) to form a contact portion (202) in contact with an external connecting member.

2. The self-locking terminal according to claim 1, wherein: A limiting portion (203) for abutting against the side wall of the terminal body (1) to limit the length of the spring piece (2) extending into the inner cavity (101) protrudes on the spring piece (2).

3. A self-locking terminal according to claim 1, characterized in that: One side of the step (1023) is inclined to form a first guiding inclined surface (1024), and the locking portion (201) has a second guiding inclined surface (2011) cooperating with the first guiding inclined surface (1024).

4. A self-locking terminal according to claim 1, wherein: One side wall surface of the contact portion (202) close to the terminal body (1) is recessed to form a convex bump (2021) protruding on the side wall surface away from the terminal body (1).

5. The self-locking terminal according to claim 1, characterized in that: The terminal body (1) is provided with a through hole (103) communicating with the inner cavity (101) for a push rod to extend into to push the locking portion (201) away from the step (1023).

6. A self-locking terminal according to claim 1, characterized in that: The extending length of the unlocking groove (1022) is greater than the extending length of the locking groove (1021).

7. A self-locking terminal according to claim 1, characterized in that: The terminal body (1) is provided with an avoidance groove (104) for avoiding the spring piece (2) on the side close to the spring piece (2).

8. A self-locking terminal according to claim 2, wherein: There are two chutes (102), and the two chutes (102) are symmetrically distributed. There are two limiting portions (203), and the two limiting portions (203) are also symmetrically distributed.

9. A self-locking terminal according to claim 1, characterized in that: The chute (102) is an arc-shaped structure.

10. A self-locking terminal according to claim 1, characterized in that: The top of the terminal body (1) is a suction plane (105) for a suction head to adsorb, and the bottom is a welding plane (106) welded and fixed to a PCB board.

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