CN201478169U - Automatic reset switch with fixed pin - Google Patents

Abstract

The utility model relates to a reset type switch especially indicates a long service life's button type automatic re-setting switch of fixed foot in area. An automatic reset switch with a fixed pin structurally comprises a body, a button, a rear cover and a PCB, wherein a cavity is formed in the body, a terminal III is arranged at one side of an elastic sheet close to a spring, and at least two positioning columns for fixing the switch are fixedly arranged at the bottom of the rear cover; and hole sites corresponding to the terminal I, the terminal II, the terminal III and the positioning column are arranged on the PCB. And terminal pins on the terminal I, the terminal II and the terminal III respectively penetrate through the jack arranged on the rear cover and the corresponding hole positions arranged on the PCB. One terminal is added to form three terminals to be connected with the PCB, and at least two positioning columns for fixing the switch are added at the bottom of the rear cover, so that the switch can be well fixed without being fixed by other accessories, and the installation cost of the switch is reduced; the terminal structure is simpler, has practiced thrift the cost of product processing and has improved the qualification rate of product.

Description

A self-resetting switch with fixed feet

technical field

The utility model relates to a reset type switch, in particular to a button type automatic reset switch with long service life and fixed feet.

Background technique

The Chinese utility model patent specification whose patent number is ZL200720122285.1 discloses a kind of "automatic reset switch". Referring to Fig. The cavity is divided into a chute cavity 111 matching with the button 12, a terminal II cavity 112 matching with the terminal II 13, a terminal I cavity 113 matching with the terminal I 14, and a shrapnel cavity 114 for fixing the shrapnel 15 The upper part of the main body 11 is provided with a hole matching the button handle 121 on the upper part of the button 12; the terminal I 14 and the terminal II 13, the slidable button 12 and the shrapnel 15 that play the role of pulling out are fixed in sequence in the described main body; An electric brush 131 is provided at the terminal II 13 near the terminal I 14, and a terminal shrapnel 132 connected with the electric brush 131 is provided on the other side; a chute 115 is provided inside the body 11, and the button 12 and the chute cavity 111 are chute Structure; the terminal I 14 is provided with a boss 141; the button cavity 122 for placing the spring 16 is arranged in the button 12, and the spring upper seat 123 for installing the spring 16 is arranged in the button cavity 122; the terminal I 14 and the conductive sheet on the terminal II 13 pass through the jack 171 provided on the rear cover 17 respectively; the spring lower seat 172 for installing the spring 16 is provided on the rear cover 17; the body 11 is snap-connected with the rear cover 17 to form One.

Press the button 12 down, the button 12 will move down along the sliding groove 115, and the terminal shrapnel 132 on the terminal II 13 will be pressed to one side to drive the electric brush 131 to touch the boss 141 on the terminal I 14 to turn on the power supply, so as to open The purpose of the switch: the button 12 is pressed down and the spring 16 is compressed downward to form an elastic force. After the pressure of the downward press disappears, the button 12 returns to the normal state under the elastic force of the spring 16, and the electric brush 131 returns to the normal state. Open the connection, so as to achieve the purpose of automatic reset when the switch is closed.

To sum up: First of all, the switch structure is composed of two feet. In this way, the switch must be fixed during installation. Generally, it is fixed with plastic brackets and screws, which results in high installation costs and takes up a lot of space. If there is no The plastic bracket, the switch is not installed smoothly on the PCB board, and the frequency of use of this switch is very high and the use time is also long. After a long time of use, it will have a great impact on the structure and life of the switch. It may even make it out of control or fail; secondly, the terminal structure of the reset switch is too complicated. The terminal shrapnel and the electric brush on the terminal II are in one structure.

Utility model content

The utility model aims at the deficiencies of the above-mentioned prior art, and aims to introduce an automatic reset type switch with fixed feet, which adds terminals and positioning columns for fixed installation.

The technical scheme that the utility model solves its technical problem adopts is:

An automatic reset type switch with fixed feet, the structure includes a body, a button, a back cover and a PCB board, the body is provided with cavities, the cavities are in turn the shrapnel cavities for fixing the shrapnel, and the terminal III cavity matching the terminal III , the chute cavity matched with the button, the terminal II cavity matched with the terminal II, the terminal I cavity matched with the terminal I, and the terminal I, the terminal II, the button and the shrapnel for pulling out the gear are fixed in sequence in the body. A button cavity for placing a spring is provided in the button, the body and the back cover are snap-connected into one body, a terminal III is provided on one side of the shrapnel close to the spring, and at least two terminals are fixed at the bottom of the back cover. A positioning column for fixing the switch; holes corresponding to terminal I, terminal II, terminal III and the positioning column are set on the PCB.

The terminal II is provided with a terminal II shrapnel near the spring, and the terminal II shrapnel is provided with a terminal II boss near the terminal I; the terminal I is provided with a terminal I shrapnel near the terminal II, and the end of the terminal I shrapnel is near the terminal II. Terminal II is provided with a terminal I boss.

The terminal pins on the terminal I, terminal II and terminal III pass through the jacks on the rear cover and the corresponding holes on the PCB respectively.

The beneficial effect of the automatic reset type switch with fixed feet of the utility model is that: the utility model adds a terminal to connect with the PCB board on the basis of the original two terminals, three points determine a surface, and add a terminal on the PCB board The welding plate can play the role of fixing the switch very well; at least two positioning posts for fixing the switch are fixed at the bottom of the back cover, so that the switch can be fixed well by adding corresponding holes on the PCB board , there is no need to use plastic brackets and screws to fix it, thereby reducing the installation cost of the switch; the terminal structure is simpler, and the terminals of the new structure are easier to control various parameters, such as stroke, the mold structure is simpler and the product parameters are more reasonable. The cost of product processing is saved and the qualification rate of products is improved.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the patent number ZL200720122285.1;

Fig. 2 is the overall structural representation of the utility model;

Fig. 3 is the structural representation of adding PCB board of the present utility model;

Fig. 4 is the exploded schematic view of the utility model;

Fig. 5 is a schematic diagram of installation of internal parts of the utility model;

Fig. 6 is a front view of terminal 1 of the present invention;

Fig. 7 is a left side view of terminal 1 of the present utility model;

Fig. 8 is a front view of terminal II of the present invention;

Fig. 9 is a right view of terminal II of the present invention.

Explanation of reference numbers:

11. Body 111, chute cavity 112, terminal II cavity 113, terminal I cavity 114, shrapnel cavity 115, chute 12, button 121, button handle 122, button cavity 123, spring upper seat 13, terminal II 131. Electric brush 132. Terminal shrapnel 14. Terminal I141. Boss 15. Shrapnel 16. Spring 17. Back cover 171. Jack 172. Spring seat 2. Body 3. Button 4. Back cover 41. Positioning post 5. Terminal I 51, terminal I shrapnel 52, terminal I boss 6, terminal II 61, terminal II shrapnel 62, terminal II boss 7, terminal III 8, shrapnel 9, spring 10, PCB board

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

With reference to Fig. 2 to Fig. 9, the utility model is implemented like this:

An automatic reset type switch with a fixed foot, a terminal III7 is provided on one side of the shrapnel 8 close to the spring 9, a terminal foot is provided on the terminal III7, terminal I 5 and terminal II 6, and terminal III7 is connected to the terminal I 5 and the terminal The terminal pins on the II 6 pass through the jacks on the back cover 4 and the corresponding holes on the PCB board 10 respectively, and finally weld the three terminal pins on the PCB board 10 to form three fixed points, and the three points are determined One side, so that it can play a good role in fixing the switch.

The bottom of the back cover 4 is fixed with two positioning columns 41 for fixing the switch; in this way, as long as the corresponding holes are added on the PCB 10, it can play a good role in fixing the switch, and the number of positioning columns 41 can be as many as possible. indivual.

To sum up, adding a terminal III7 and two positioning columns 41 at the bottom can play a very good role in fixing the switch, so that there is no need to use plastic brackets and screws to fix it, so as to reduce the installation process and lower the switch. cost.

Terminal II 6 is provided with terminal II shrapnel 61 near spring 8, and terminal II boss 62 is set at the end of terminal II shrapnel 61 near terminal I 5; terminal I 5 is provided with terminal I shrapnel 51 near terminal II 6, and terminal I shrapnel 51 Terminal I boss 52 is established at terminal II 6 at the end. When the button 3 moves down along the sliding groove, the terminal II shrapnel 61 provided on the terminal II 6 is pressed to one side, so that the terminal II boss 62 arranged at the end of the terminal II shrapnel 61 and the end of the terminal I shrapnel 51 The boss 52 of the terminal I on the part contacts the power supply to achieve the purpose of turning on the switch; when the button 3 is pressed down, the spring 9 is compressed downward to form an elastic force, and the button 3 acts on the elastic force of the spring 9 after the downward pressure disappears. Return to the normal state, and the terminal II shrapnel 61 returns to the normal state to disconnect, so as to achieve the purpose of closing the switch and automatically resetting.

The above is only a preferred embodiment of the automatic reset type switch with fixed feet of the utility model, and does not limit the technical scope of the utility model. Any minor modifications, equivalent changes and modifications made still fall within the scope of the technical solutions of the present utility model.

Claims (3)

1. automatically reset switch with fixing feet, comprise body (2) in the structure, button (3), bonnet (4) and pcb board (10), body is established cavity in (2), cavity is followed successively by the shell fragment cavity of fixation spring tab (8), with the supporting terminal II I cavity of terminal II I (7), with the supporting chute cavity of button (3), with the supporting terminal II cavity of terminal II (6), with the supporting terminal I cavity of terminal I (5), install terminal I (5) in the body (2) successively, terminal II (6) has reached the shell fragment (8) that pulls out the shelves effect with button (3), establish the button cavity of placing spring (9) in the described button (3), described body (2) links into an integrated entity with bonnet (4) buckle, it is characterized in that: described shell fragment (8) one sides locate to establish a terminal II I (7) by spring (9), and described bonnet (4) bottom sets firmly at least two reference columns (41) that are used for fixing switch; Establish on the described pcb board (10) and terminal I (5), terminal II (6), terminal II I (7) and position, the corresponding hole of reference column (41).

2. a kind of automatically reset switch according to claim 1 with fixing feet, it is characterized in that: described terminal II (6) locates to establish terminal II shell fragment (61) by spring (8), and terminal II boss (62) is located to establish by terminal I (5) in described terminal II shell fragment (61) end; Described terminal I (5) locates to establish terminal I shell fragment (51) by terminal II (6), and terminal I boss (52) is located to establish by terminal II (6) in terminal I shell fragment (51) end.

3. a kind of automatically reset switch with fixing feet according to claim 1 is characterized in that: the terminal supportor on described terminal I (5), terminal II (6) and the terminal II I (7) passes the position, corresponding hole of establishing on the jack established on the bonnet (4) and the pcb board (10) respectively.

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