A self-locking switch structure

Abstract

The present invention discloses a self-locking switch structure, which includes a base, terminals, a push handle, a reed, a spring and a hook pin. The terminals are located inside the base. The front end of the push handle is located inside the cavity of the base and is slidably matched with the inner cavity of the base. A reed corresponding to the terminals is arranged at the front end of the push handle. One end of the spring is fixed to the inner cavity of the base, and the other end is fixed to the front end face of the push handle. A clamping portion is arranged on the front end face of the push handle and is matched with the hook pin fixed to the inner cavity of the base. In the self-locking switch structure of the present invention, the terminals and the base are integrally formed by injection molding, the flatness of the two terminals is improved, and since the periphery of the terminals is sealed with glue, the deformation after heating is reduced. At the same time, the reed is riveted to the push handle, and the reed is designed with double contacts, thereby improving the current-carrying capacity of the switch.

Description

Technical Field

[0001] The present invention relates to the technical field of self-locking switches, and particularly to a self-locking switch structure. Background Art

[0002] In the existing self-locking switch, the terminal is inserted into the gap of the bakelite board in an opposite riveting manner, the reed is inserted into the terminal, the positioning groove of the push handle is buckled on the reed, and when the push handle is pushed, the reed is driven to slide on different terminals to realize circuit switching. The spring is installed in the middle of the push handle (outside the bracket) and fixed by a retaining piece to realize the automatic reset of the push handle. This connection method of inserting the terminal into the gap of the bottom plate (bakelite board) in an opposite riveting manner has the disadvantage that the three terminals are not coplanar. After the switch is energized, it will heat up, the terminals will deform, the misalignment of the terminals will increase, resulting in increased friction between the reed and the terminals, and thus the service life of the switch is reduced. Moreover, the existing self-locking switch has a large number of parts, difficult quality control, and difficult assembly process. Summary of the Invention

[0003] The purpose of the present invention is to provide a self-locking switch structure to solve the above problems existing in the prior art. By improving the structures of the terminal and the reed, the purpose of improving the current-carrying capacity of the switch is achieved, and the assembly difficulty of the switch is reduced.

[0004] To achieve the above purpose, the present invention provides the following solution: The present invention provides a self-locking switch structure, including a base, a terminal, a push handle, a reed, a spring, and a hook pin. The terminal is located inside the base, the front end of the push handle is located inside the cavity of the base and is slidably matched with the inner cavity of the base. The front end of the push handle is provided with the reed corresponding to the terminal. One end of the spring is fixed to the inner cavity of the base, and the other end is fixed to the front end face of the push handle. The front end face of the push handle is provided with a clamping portion that cooperates with the hook pin fixed to the inner cavity of the base.

[0005] Preferably, the terminal and the base are integrally formed by injection molding.

[0006] Preferably, the reed is riveted to the front end of the push handle, and the reed is provided with double contacts.

[0007] Preferably, the terminal is located on the bottom surface of the inner cavity of the base, the reed is arranged on the bottom surface of the front end of the push handle, and the reed with double contacts is inserted into the terminal.

[0008] Preferably, the rear part of the push handle is located outside the base, and a key cap is installed in cooperation with the rear part of the push handle.

[0009] Preferably, a groove is formed at the connection between the front end and the rear part of the push handle, and this groove is used to realize the up and down movement of the push handle relative to the base.

[0010] Preferably, it further includes an upper cover, which is thermally riveted to the base, and the crochet hook is fixed to the bottom surface of the upper cover and located in the inner cavity of the base.

[0011] Preferably, on the front end surface of the push handle, the position of the clamping portion is higher than the position of the spring fixing point.

[0012] The present invention has achieved the following technical effects compared with the prior art:

[0013] In the self-locking switch structure of the present invention, the terminal and the base are integrally formed by injection molding, the flatness of the two terminals is improved, and since the periphery of the terminal is sealed with glue, the deformation after heating is reduced. At the same time, the reed is riveted to the push handle, and the reed is designed with double contacts, thereby improving the current-carrying performance of the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the self-locking switch structure;

[0016] Figure 2 It is a connection structure diagram of the base and the terminal;

[0017] Figure 3 It is a connection schematic diagram of the push handle and the reed;

[0018] Figure 4 It is a connection schematic diagram of the upper cover and the base;

[0019] Wherein, 1 is the terminal; 2 is the base; 3 is the crochet hook; 4 is the spring; 5 is the reed; 6 is the upper cover; 7 is the bracket; 8 is the push handle; 9 is the keycap; 10 is the clamping portion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] The purpose of the present invention is to provide a self-locking switch structure to solve the problems existing in the above-mentioned prior art. By improving the structures of the terminal and the reed, the purpose of improving the current-carrying capacity of the switch is achieved, and the assembly difficulty of the switch is reduced.

[0022] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] As Figures 1-4 shown, the present invention provides a self-locking switch structure, which includes a base 2, a terminal 1, a push handle 8, a reed 5, a spring 4, and a hook needle 3. The terminal 1 is located inside the base 2. The front end of the push handle 8 is located inside the cavity of the base 2 and is slidably matched with the cavity of the base 2. A reed 5 corresponding to the terminal 1 is provided at the front end of the push handle 8; one end of the spring 4 is fixed to the inner cavity of the base 2, and the other end is fixed to the front end surface of the push handle 8; a clamping portion 10 is provided on the front end surface of the push handle 8 and is matched with the hook needle 3 fixed to the inner cavity of the base 2.

[0024] Furthermore, the terminal 1 and the base 2 are integrally formed by injection molding to form an integral component. The base 2 is installed on a bracket 7; the reed 5 and the front end of the push handle 8 are connected by riveting, and the reed 5 is provided with double contacts. The flatness of the two terminals 1 is improved. Since the periphery of the terminal 1 is sealed with glue, the deformation after heating is reduced. At the same time, the reed 5 and the push handle 8 are riveted, and the reed 5 is designed with double contacts, thereby improving the current-carrying capacity of the switch.

[0025] The self-locking switch structure further includes an upper cover 6. The upper cover 6 and the base 2 are connected by hot riveting. The hook needle 3 is fixed to the bottom surface of the upper cover 6 and is located inside the cavity of the base 2. After the position of the hook needle 3 in the base 2 is automatically assembled, the upper cover 6 and the base 2 are hot riveted. On the front end surface of the push handle 8, the position of the clamping portion 10 is higher than the position of the fixed point of the spring 4.

[0026] The rear part of the push handle 8 is located outside the base 2, and a keycap 9 is clamped and installed at the rear part of the push handle 8. The push handle 8 is pushed forward by pushing the keycap 9. A groove is provided at the connection between the front end and the rear part of the push handle 8, and this groove is used to realize the up and down movement of the push handle 8 relative to the base 2. The setting of the groove makes the diameter of the connection between the front end and the rear part of the push handle 8 smaller than the inner diameter of the opening on the base 2. Thus, when the push handle 8 moves forward, the push handle 8 can simultaneously move downward relative to the base 2, compress the spring 4, and then move upward so that the clamping portion 10 at the front end of the push handle 8 is hooked with the hook needle 3 inside the base 2, thereby realizing the locking of the self-locking switch structure; when the push handle 8 moves backward, the push handle 8 can simultaneously move upward relative to the base 2, the clamping portion 10 at the front end of the push handle 8 is disengaged from the hook needle 3, and then the push handle 8 moves forward, downward, and backward in sequence, and returns to the original state under the restoring force of the spring 4. At this time, the self-locking switch structure is in a released state.

[0027] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. A self-locking switch structure, characterized in that: It includes a base, terminals, a push handle, a reed, a spring and a hook pin. The terminals are located inside the base. The front end of the push handle is located inside the cavity of the base and is slidably matched with the inner cavity of the base. A reed corresponding to the terminals is arranged at the front end of the push handle. One end of the spring is fixed to the inner cavity of the base, and the other end is fixed to the front end face of the push handle. A clamping portion is arranged on the front end face of the push handle and is matched with the hook pin fixed to the inner cavity of the base. The rear part of the push handle is located outside the base, and a keycap is installed in cooperation with the rear part of the push handle. A groove is formed at the connection between the front end and the rear part of the push handle, and this groove is used to realize the up and down movement of the push handle relative to the base. The diameter at the connection between the front end and the rear part of the push handle is smaller than the inner diameter of the opening on the base; It further includes an upper cover, the upper cover and the base are connected by hot riveting, and the hook pin is fixed to the bottom surface of the upper cover and is located inside the cavity of the base. On the front end face of the push handle, the position of the clamping portion is higher than the position of the spring fixing point.

2. The self-locking switch structure according to claim 1, characterized in that: The terminals and the base are integrally formed by injection molding.

3. The self-locking switch structure according to claim 2, characterized in that: The reed and the front end of the push handle are connected by riveting, and the reed is provided with double contacts.

4. The self-locking switch structure according to claim 3, characterized in that: The terminals are located on the bottom surface of the inner cavity of the base, the reed is arranged on the bottom surface of the front end of the push handle, and the reed with double contacts is inserted into the terminals in an opposing manner.

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