CN217606722U

CN217606722U - Dustproof mechanism of single-stage on-off microswitch

Info

Publication number: CN217606722U
Application number: CN202220435138.4U
Authority: CN
Inventors: 朱正伟; 范文永
Original assignee: Yongkang Chuanmu Electrical Appliance Co ltd
Current assignee: Yongkang Chuanmu Electrical Appliance Co ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-10-18
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a dustproof mechanism of single-stage on-off micro-gap switch, including the casing and lever, reed, movable piece and button in it, set up dustproof muscle and dustproof seat on the button, dustproof muscle is in the slip cavity of casing, dustproof seat with button fixed connection, dustproof seat is C style of calligraphy will the movable bin cladding of button including, still set up one deck dustproof cotton below the dustproof muscle, dustproof cotton has a definite deformation volume, can effectively isolate the entering of a part of dust through dustproof muscle design; the dustproof cotton is designed to prevent dust from entering the shell; the dustproof seat C-shaped sliding design further isolates dust, and the structure is firm and stable.

Description

Dustproof mechanism of single-stage on-off microswitch

Technical Field

The utility model belongs to the technical field of the switch and specifically relates to a single-stage break-make micro-gap switch's dustproof mechanism 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 a 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 a gap between the keys and the shell, and a good dustproof effect cannot be achieved.

Disclosure of Invention

The utility model provides a not enough to prior art, the utility model provides a single-stage break-make micro-gap switch's dustproof mechanism possesses better dustproof function.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a single-stage break-make micro-gap switch's dustproof mechanism, includes the casing and lever, reed, movable piece and the button in it, set up dustproof muscle and dustproof seat on the button, dustproof muscle is in the slip cavity of casing, dustproof seat with button fixed connection, dustproof seat is the C style of calligraphy will including the movable bin cladding of button.

Among the above-mentioned technical scheme, furtherly, dustproof muscle below still sets up the one deck dustproof cotton, dustproof cotton has certain deformation volume.

In the above technical solution, further, the reed is disposed between the bracket and the movable piece, and the lever drives the button to drive the movable piece to switch between the normally closed terminal and the normally open terminal.

In the above technical scheme, further, when the lever is pressed down, 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 bracket is conducted with the line of the normally open terminal, and the bracket is disconnected with the line of the normally closed terminal.

In the above technical scheme, further, when the lever loses pressure, the reed resets to jack up the movable piece and drive the button and the lever to reset, and the electric contact on the movable piece contacts with the normally closed terminal to enable the support to be connected with the line of the normally closed terminal and be disconnected with the line of the normally open terminal.

In the above technical solution, further, the support and the movable plate are made of conductive metal.

The utility model has the advantages that: 1. the dust-proof rib design can effectively isolate a part of dust from entering; 2. the dustproof cotton is designed to prevent dust from entering the shell; 3. the dustproof seat C-shaped sliding design further isolates dust, and the structure is firm and stable.

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 internal structure of fig. 1 according to the present invention.

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

In the figure, 1, a shell, 11, a sliding cavity, 12, a movable bin, 2, a lever, 3, a reed, 4, a movable sheet, 41, an electric contact, 5, a button, 51, a dustproof rib, 52, a dustproof seat, 53, dustproof cotton, 6, a normally closed terminal, 7, a normally open terminal and 8, a bracket.

Detailed Description

Referring to fig. 1-3, a dustproof mechanism of a single-stage on-off microswitch comprises a shell 1, a lever 2, a reed 3, a movable sheet 4 and a button 5, wherein the button 5 is provided with a dustproof rib 51 and a dustproof seat 52, the dustproof rib 51 is arranged in a sliding cavity 11 of the shell 1, the dustproof seat 52 is fixedly connected with the button 5, and the dustproof seat 52 covers a movable cabin 12 of the button 5 in a C shape.

In order to improve the dustproof effect, a layer of dustproof cotton 53 is further arranged below the dustproof rib 51, the dustproof cotton 53 has a certain deformation amount, and when a small amount of dust falls into the lower part of the dustproof rib 51, the dust can be adsorbed by the dustproof cotton 53.

In order to enable the switch to realize the effect of circuit breaking, the reed 3 is arranged between the support 8 and the movable plate 4, the lever 2 drives the button 5 to drive the movable plate 4 to switch between the normally closed terminal 6 and the normally open terminal 7, when the lever 2 is pressed down, the button 5 is pressed to move downwards and simultaneously triggers the movable plate 4 to move downwards, so that the electrical contact 41 on the movable plate 4 is in contact with the normally open terminal 7, so that the support 8 is in conduction with the circuit of the normally open terminal 7, and is disconnected with the circuit of the normally closed terminal 6, when the lever 2 loses pressure, the reed 3 resets and jacks up the movable plate 4 and simultaneously drives the button 5 and the lever 2 to reset, the electrical contact 41 on the movable plate 4 is in contact with the normally closed terminal 6, so that the support 8 is in conduction with the circuit of the normally closed terminal 6, and is disconnected with the circuit of the normally open terminal 7, and the support 8 and the movable plate 4 are made of conductive metal.

According to the design, the dust-proof rib 51 can effectively isolate a part of dust from entering; the dust-proof cotton 53 is designed to prevent dust from entering the interior of the shell 1; the dust-proof seat 52C-shaped sliding design further isolates dust, and the structure is firm and stable.

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

1. The dustproof mechanism of the single-stage on-off microswitch is characterized by comprising a shell, a lever, a reed, a movable sheet and a button, wherein the lever, the reed, the movable sheet and the button are arranged in the shell, a dustproof rib and a dustproof seat are arranged on the button, the dustproof rib is arranged in a sliding cavity of the shell, the dustproof seat is fixedly connected with the button, and the dustproof seat is C-shaped and is used for coating a movable bin of the button.

2. The dustproof mechanism of the single-stage on-off microswitch of claim 1, wherein a layer of dustproof cotton is further arranged below the dustproof rib, and the dustproof cotton has a certain deformation amount.

3. The dust-proof mechanism of a single-stage on-off microswitch of claim 1 wherein the reed is disposed between the bracket and the movable plate, and the lever drives the button to switch the movable plate between the normally closed terminal and the normally open terminal.

4. The dustproof mechanism of the single-stage on-off microswitch of claim 3, wherein when the lever is pressed down, 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 support is conducted with the circuit of the normally open terminal, and the circuit of the normally closed terminal is disconnected.

5. The dustproof mechanism of the single-stage on-off microswitch according to claim 4, wherein when the lever loses pressure, the reed resets to jack the movable piece upward and drive the button and the lever to reset, an electrical contact on the movable piece contacts with the normally closed terminal, so that the bracket is conducted with the line of the normally closed terminal and is disconnected with the line of the normally open terminal.

6. The dust prevention mechanism for a single stage on/off microswitch of claim 3 wherein the material of both the bracket and the movable plate is an electrically conductive metal.