CN217468252U - Dustproof bipolar on-off microswitch - Google Patents

Abstract

The utility model discloses a dustproof bipolar break-make micro-gap switch, including casing, button and trigger mechanism, the casing includes upper cover, first base and second base, the second base set up a plurality of location concave part with a plurality of location convex part cooperations of first base are fixed, on cover set up a plurality of dustproof muscle with dustproof recess cooperation on the first base, the button passes through the setting of block rubber slidable in the casing, the button both sides set up spacing muscle, the button bottom set up dustproof seat with dustproof sunken cooperation in the casing, through the setting of block rubber, dustproof muscle and dustproof seat for dustproof effect is more excellent, and first base, second base and upper cover all can be unpack apart alone, and the equipment of being convenient for is changed, and single button design can be so that the trigger mechanism of both sides triggers simultaneously, is difficult for burning.

Description

Dustproof bipolar on-off microswitch

Technical Field

The utility model belongs to the technical field of the switch and specifically relates to a dustproof bipolar break-make micro-gap switch is related to.

Background

The microswitch is a contact point mechanism which has a tiny contact point interval and a quick action mechanism and performs switching action by using a specified stroke and a specified force, and because the contact point interval of the switch is relatively small, the microswitch is called a sensitive switch, and when the microswitch meets a dusty environment, the metal member in the switch is influenced because the microswitch does not have a dustproof function, so that the contact resistance of the switch is increased, even the switch is not electrified or short-circuited. However, the keys need to make back-and-forth micro movement, so that the connection between the keys and the shell is not tight, dust particles can enter the shell from gaps between the keys and the shell, and a good dustproof effect cannot be achieved; on the other hand, the common bipolar micro switch is provided with two independent buttons respectively, when the stress is uneven, the triggering time difference is often caused, the switch burnout condition is caused, and the problem of inconvenient replacement and the like is caused when one group of switches are burnt out.

Disclosure of Invention

To the not enough of prior art, the utility model provides a dustproof bipolar break-make micro-gap switch possesses better dustproof function, and the one-button triggers and is convenient for change the inside subassembly.

The utility model provides a technical scheme that its technical problem adopted is: the casing includes upper cover, first base and second base, the second base set up a plurality of location concave parts with a plurality of location convex parts cooperation of first base is fixed, cover on set up a plurality of dustproof muscle with dustproof recess cooperation on the first base.

Among the above-mentioned technical scheme, furtherly, the button passes through the setting of rubber piece slidable in the casing, the button both sides set up spacing muscle, the button bottom set up dustproof seat with dustproof sunken cooperation in the casing.

In the above technical solution, further, the trigger mechanism includes a lever, a spring and a movable piece, the spring is connected between a bracket and the movable piece, the bracket is connected with the movable piece through the lever, and the button drives the movable piece to switch between the normally closed terminal and the normally open terminal.

In the above technical scheme, further, the button is pressed to move downwards and simultaneously triggers the movable piece to move downwards, so that the electric contact on the movable piece is contacted with the normally open terminal, the support is conducted with the line of the normally open terminal, and the line of the normally closed terminal is disconnected.

Among the above-mentioned technical scheme, furtherly, when the button loses pressure, the reed resets, will the mobile piece jack-up that makes progress drives simultaneously the button resets, electrical contact and the contact of normally closed terminal on the mobile piece make the support with the circuit of normally closed terminal switches on, with the circuit disconnection of normally open terminal.

In the above technical solution, further, the first base and the second base are provided with trigger mechanisms, the button is pressed down to simultaneously trigger the two trigger mechanisms, and the support and the movable piece are made of conductive metal.

The utility model has the advantages that: 1. through the arrangement of the rubber block, the dustproof rib and the dustproof seat, the dustproof effect is better; 2. the first base, the second base and the upper cover can be detached independently, so that the assembly and the replacement are convenient; 3. the single-button design can lead the trigger mechanisms at the two sides to be triggered simultaneously and is not easy to burn.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the combination state of the present invention.

Fig. 2 is a schematic diagram of the partial explosion structure of fig. 1 of the present invention.

Fig. 3 is a schematic diagram of the explosive structure of fig. 1 according to the present invention.

Fig. 4 is another angle structure diagram of fig. 3 according to the present invention.

In the figure, 1, a shell, 11, an upper cover, 111, a dustproof rib, 12, a first base, 121, a positioning convex part, 122, a dustproof groove, 13, a second base, 131, a positioning concave part, 14, a dustproof concave part, 2, a button, 21, a rubber block, 22, a limiting rib, 23, a dustproof seat, 3, a trigger mechanism, 31, a lever, 32, a reed, 33, a movable sheet, 331, an electric contact, 34, a support, 35, a normally closed terminal and 36, a normally open terminal are arranged.

Detailed Description

Referring to fig. 1-4, a dustproof bipolar on-off microswitch comprises a housing 1, a button 2 and a trigger mechanism 3, wherein the housing 1 comprises an upper cover 11, a first base 12 and a second base 13, the second base 13 is provided with a plurality of positioning concave parts 131 matched and fixed with a plurality of positioning convex parts 121 of the first base 12, and the upper cover 11 is provided with a plurality of dustproof ribs 111 matched with dustproof grooves 122 on the first base 12.

In order to make the dustproof effect performance of the button 2 more, the button 2 is slidably arranged in the shell 1 through a rubber block 21, limiting ribs 22 are arranged on two sides of the button 2, and a dustproof seat 23 is arranged at the bottom of the button 2 and matched with a dustproof recess 14 in the shell 1.

In order to enable the switch to realize the effect of circuit breaking, the triggering mechanism 3 includes a lever 31, a spring plate 32 and a movable plate 33, the spring plate 32 is connected between a support 34 and the movable plate 33, the support 34 is connected with the movable plate 33 through the lever 31, the button 2 drives the movable plate 33 to switch between a normally closed terminal 35 and a normally open terminal 36, the button 2 is pressed to move downwards and simultaneously triggers the movable plate 33 to move downwards, an electric contact 331 on the movable plate 33 is contacted with the normally open terminal 36, the circuit of the support 34 and the normally open terminal 36 is conducted and is disconnected from the circuit of the normally closed terminal 35, when the button 2 loses pressure, the spring plate 32 resets to jack the movable plate 33 upwards and simultaneously drives the button 2 to reset, the electric contact 331 on the movable plate 33 is contacted with the terminal 35, the wire of the bracket 34 and the normally closed terminal 35 are conducted, and the wire of the normally open terminal 36 is disconnected.

In order to enable the button 2 to simultaneously trigger the two trigger mechanisms 3, the first base 12 and the second base 13 are provided with the trigger mechanisms 3, the button 2 is pressed down to simultaneously trigger the two trigger mechanisms 3, and the bracket 34 and the movable sheet 33 are made of conductive metal.

According to the design, the rubber block 21, the dustproof rib 111 and the dustproof seat 23 are arranged, so that the dustproof effect is better; the first base 12, the second base 13 and the upper cover 11 can be detached independently, so that the assembly and the replacement are convenient; the single button 2 design can make the trigger mechanism 3 of both sides trigger simultaneously, is difficult for burning out.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and the present invention is not departed from the technical solution of the present invention, and the made simple modification, equivalent change or modification all fall into the protection scope of the present invention.

Claims (7)

1. A dustproof bipolar on-off microswitch comprises a shell, a button and a trigger mechanism and is characterized in that the shell comprises an upper cover, a first base and a second base, wherein the second base is provided with a plurality of positioning concave parts which are matched and fixed with a plurality of positioning convex parts of the first base, and the upper cover is provided with a plurality of dustproof ribs which are matched with dustproof grooves on the first base.

2. The dustproof bipolar on-off microswitch of claim 1, wherein the button is slidably arranged in the shell through a rubber block, limiting ribs are arranged on two sides of the button, and a dustproof seat is arranged at the bottom of the button and matched with a dustproof recess in the shell.

3. The dustproof bipolar on-off microswitch of claim 1, wherein the trigger mechanism comprises a lever, a reed and a movable piece, the reed is connected with a bracket and the movable piece, the bracket is connected with the movable piece through the lever, and the button drives the movable piece to switch between a normally closed terminal and a normally open terminal.

4. The dustproof bipolar on-off microswitch of claim 3, wherein the button is pressed to move downwards and simultaneously trigger the movable piece to move downwards, so that the electric contact on the movable piece is contacted with the normally open terminal, the bracket is conducted with the circuit of the normally open terminal, and the circuit of the normally closed terminal is disconnected.

5. The dustproof bipolar on-off microswitch of claim 4, wherein when the button loses pressure, the reed resets to jack the movable piece upwards and drive the button to reset, and an electrical contact on the movable piece is in contact with the normally closed terminal, so that the bracket is conducted with a circuit of the normally closed terminal and is disconnected with a circuit of the normally open terminal.

6. The dust-resistant bipolar on-off microswitch of claim 5, wherein said first base and said second base are provided with said trigger mechanisms, said button being depressed to trigger both of said trigger mechanisms simultaneously.

7. A dust protected bipolar on-off microswitch as in claim 3 wherein said carrier and said movable plate are both of a conductive metal.

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