CN214313002U - Spring sheet type membrane switch - Google Patents

Abstract

The utility model belongs to the technical field of membrane switches, and discloses a spring plate type membrane switch, which comprises a panel layer, wherein a control panel is horizontally arranged at the upper position of the panel layer, a switch button is arranged at the upper position of the plate body of the control panel, a panel glue layer is horizontally arranged at the side of the panel layer away from the control panel, an upper circuit board is horizontally arranged at the side of the panel glue layer away from the panel layer, and the upper circuit board is fixedly connected with the panel layer through the panel glue layer, the utility model discloses a double-spring-plate structure is arranged, an upper spring plate and a lower spring plate are arranged at the lower end of a trigger rod below the switch button, so that the elasticity of the spring plate trigger structure and the relatively good fatigue strength can be ensured after the membrane switch works for a long time, and a metal rod can normally contact with the circuit board under the action of pressure to transmit signals, the service life of the switch button and the trigger structure is prolonged, and the working performance of the elastic sheet type membrane switch is optimized.

Description

Spring sheet type membrane switch

Technical Field

The utility model belongs to the technical field of the membrane switch, concretely relates to shell fragment type membrane switch.

Background

The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel, has the advantages of rigorous structure, beautiful appearance, good sealing property, long service life and the like, is widely applied to the fields of electronic communication, electronic measuring instruments, industrial control, medical equipment, automobile industry, intelligent toys, household appliances and the like, and is divided into various types according to the structure, wherein the membrane switch comprises a metal elastic sheet type membrane switch.

After the existing elastic sheet type membrane switch works for a long time, the elasticity of an elastic sheet structure below a switch button can be affected, a failure phenomenon often occurs, so that a trigger signal cannot be transmitted, and a corresponding heat dissipation structure is not arranged to improve the heat dissipation performance of the membrane switch.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shell fragment type membrane switch to solve current shell fragment type switch and carry out the problem that the contact failure phenomenon that leads to reduces and can not carry out work under high temperature or high humidity environment after carrying out long-time work problem that takes place.

In order to achieve the above object, the utility model provides a following technical scheme: the elastic sheet type thin-film switch comprises a panel layer, wherein a control panel is arranged above the panel layer in the horizontal direction, a switch button is arranged above a plate body of the control panel, a panel glue layer is arranged on the panel layer in the horizontal direction of one side far away from the control panel, an upper circuit board is arranged on the panel glue layer in the horizontal direction of one side far away from the panel layer, and the upper circuit board is fixedly connected with the panel layer through the panel glue layer.

Preferably, an isolation layer is arranged on one side, away from the panel glue layer, of the upper circuit board in the horizontal direction, a lower circuit board is arranged on one side, away from the upper circuit board, of the isolation layer in the horizontal direction, and the upper circuit board and the lower circuit board are symmetrically arranged along the horizontal center line of the isolation layer.

Preferably, the plate body bottom horizontal direction of circuit board is provided with the waterproof layer down, one side horizontal direction fixedly connected with backer board of circuit board is kept away from down to the waterproof layer, the outside one side position horizontal direction fixed connection of plate body of circuit board has the lead wire down, the one end fixed mounting that the circuit board was kept away from down to the lead wire has the dupont plug.

Preferably, a fixed seat is fixedly connected to one side of the bottom of the backing plate, a clamping groove is formed in the seat body of the fixed seat, and a heat conducting fin is fixedly arranged on one side of the outer portion of the groove body of the clamping groove in the horizontal direction.

Preferably, a trigger plate is arranged inside the switch button, a trigger rod is fixedly connected to the middle position of the bottom of the plate body of the trigger plate in the vertical direction, and an upper elastic sheet is fixedly connected to the bottom of the trigger rod.

Preferably, one end, far away from the trigger rod, of the upper elastic sheet is fixedly connected with a connecting rod, one end, far away from the upper elastic sheet, of the connecting rod is fixedly connected with a lower elastic sheet, and a metal rod is fixedly connected to the middle position of the bottom of the lower elastic sheet in the vertical direction.

Compared with the prior art, the utility model, following beneficial effect has:

(1) the utility model discloses set up two shell fragment structures, the trigger bar lower extreme in shift knob below is provided with shell fragment and lower shell fragment to can guarantee shell fragment trigger structure's elasticity and comparatively good fatigue strength after membrane switch carries out long-time work, thereby make the metal pole can normally take place to contact with the circuit board and transmit signal under the pressure effect, prolonged shift knob and trigger structure's life, optimized shell fragment type membrane switch's working property.

(2) The utility model discloses the conducting strip structure has been set up, is provided with the conducting strip in the below horizontal direction of backing plate to carry out long-time during operation or can provide good heat conduction for membrane switch under the operating condition of higher temperature at membrane switch and handle, make membrane switch can be better carry out work, improved membrane switch's operating quality.

(3) The utility model discloses set up the waterproof layer, thereby the top of circuit board is provided with the waterproof layer down and can make membrane switch carry out isolated protection to outside water stain and steam when carrying out the during operation, has prevented that water access switch is inside to cause the emergence of harmful effects phenomenon to inside electric property structure and electric connection, has optimized membrane switch's structural performance.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an external view of the present invention;

FIG. 3 is a schematic view of the fixing structure of the heat conducting fin of the present invention;

fig. 4 is a schematic structural view of the spring structure of the utility model;

in the figure: 1. a panel layer; 2. a control panel; 3. a switch button; 30. a trigger plate; 301. a trigger lever; 302. an upper spring plate; 303. a connecting rod; 304. a lower spring plate; 305. a metal rod; 4. a panel glue layer; 5. an upper circuit board; 6. an isolation layer; 7. a lower circuit board; 8. a lead wire; 9. a DuPont plug; 10. a waterproof layer; 11. a backing plate; 12. a fixed seat; 120. a clamping groove; 13. a heat conductive sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: bullet piece type membrane switch, including panel layer 1, the top position horizontal direction on panel layer 1 is provided with control panel 2, control panel 2's plate body top position is provided with shift knob 3, panel layer 1 is kept away from 2 one side horizontal direction of control panel and is provided with panel glue film 4, panel glue film 4 is kept away from one side horizontal direction on panel layer 1 and is provided with circuit board 5, go up circuit board 5 and pass through panel glue film 4 and panel layer 1 looks fixed connection, panel glue film 4 mainly carries out fixed connection with panel layer 1 and last circuit board 5 thereby increasing whole membrane switch's sealing performance, the viscidity and the anti-aging nature that generally have high strength.

Furthermore, an isolation layer 6 is horizontally arranged on one side, away from the panel glue layer 4, of the upper circuit board 5, a lower circuit board 7 is horizontally arranged on one side, away from the upper circuit board 5, of the isolation layer 6, the upper circuit board 5 and the lower circuit board 7 are symmetrically arranged along the horizontal central line of the isolation layer 6, and conductive silver paste and conductive carbon paste are generally arranged on the surfaces of the upper circuit board 5 and the lower circuit board 7, so that the panel glue layer has excellent conductivity.

Further, the plate body bottom horizontal direction of lower circuit board 7 is provided with waterproof layer 10, waterproof layer 10 keeps away from one side horizontal direction fixedly connected with backing plate 11 of lower circuit board 7, waterproof layer 10 mainly prevents water stain or steam and is harmed the circuit board by membrane switch's below installation department, the outside one side position horizontal direction fixedly connected with lead wire 8 of plate body of lower circuit board 7, lead wire 8 keeps away from the one end fixed mounting of lower circuit board 7 has dupont plug 9, can be connected in order to reach control effect with outside electrical component through lead wire 8 and dupont plug 9 membrane switch.

Specifically, one side of the bottom of the backing plate 11 is fixedly connected with two fixing bases 12, the two fixing bases 12 are symmetrically arranged along the vertical center line of the backing plate 11, the fastening groove 120 is formed inside the base of the fixing base 12, and the heat conducting fins 13 are fixedly arranged in the horizontal direction at one side of the outside of the base of the fastening groove 120.

It is worth to say that the inside of the switch button 3 is provided with the trigger plate 30, the trigger rod 301 is fixedly connected to the middle position of the bottom of the plate body of the trigger plate 30 in the vertical direction, the upper elastic sheet 302 is fixedly connected to the bottom of the trigger rod 301, and the upper elastic sheet 302 is connected with the trigger plate 30 through the trigger rod 301.

Further, one end of the upper elastic sheet 302, which is far away from the trigger rod 301, is fixedly connected with a connecting rod 303, one end of the connecting rod 303, which is far away from the upper elastic sheet 302, is fixedly connected with a lower elastic sheet 304, a metal rod 305 is fixedly connected with the bottom middle position of the lower elastic sheet 304 in the vertical direction, the metal rod 305 can be in contact with the upper circuit board 5 below under the action of pressure, and the upper elastic sheet 302 and the lower elastic sheet 304 can work in a matched manner and utilize the elastic condition of the upper elastic sheet 302 and the lower elastic sheet 304 to achieve a good pressure transmission effect.

The utility model discloses a theory of operation and use flow: when the utility model is used, firstly, the panel layer 1 is fixedly connected with the upper circuit board 5 by the panel glue layer 4, the isolation layer 6 is arranged between the upper circuit board 5 and the lower circuit board 7 to provide independent protection for the two circuit boards, the waterproof layer 10 is arranged between the lower circuit board 7 and the backing board 11 to prevent water stain or vapor under the humid environment from causing adverse effect to the structure inside the switch from the lower part of the mounting surface of the membrane switch, the lead wire 8 and the DuPont plug 9 which are arranged outside the lower circuit board 7 are connected with the electric furnace outside the membrane switch, the heat conducting sheet 13 is arranged at the bottom of the backing board 11, the two ends of the heat conducting sheet 13 are respectively connected with the clamping grooves 120 which are connected in the fixed seat 12 at the bottom of the backing board 11 in a clamping way, when the switch button 3 is pressed downwards, the trigger board 30 arranged inside the switch button 3 transmits the pressure to the upper spring sheet 302 and the lower spring sheet 304 below through the trigger rod 301, the dual leaf spring structure will further transmit the pressure to the metal rod 305 so that the metal rod 305 is connected to the upper circuit board 5 in a triggering manner.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. Bullet piece type membrane switch, including panel layer (1), its characterized in that: a control panel (2) is arranged above the panel layer (1) in the horizontal direction, a switch button (3) is arranged above a plate body of the control panel (2), a panel glue layer (4) is arranged on one side, far away from the control panel (2), of the panel layer (1) in the horizontal direction, an upper circuit board (5) is arranged on one side, far away from the panel layer (1), of the panel glue layer (4) in the horizontal direction, and the upper circuit board (5) is fixedly connected with the panel layer (1) through the panel glue layer (4);

a trigger plate (30) is arranged inside the switch button (3), a trigger rod (301) is fixedly connected to the middle position of the bottom of a plate body of the trigger plate (30) in the vertical direction, and an upper elastic sheet (302) is fixedly connected to the bottom of the trigger rod (301);

the spring plate is characterized in that one end, far away from the trigger rod (301), of the upper spring plate (302) is fixedly connected with a connecting rod (303), one end, far away from the upper spring plate (302), of the connecting rod (303) is fixedly connected with a lower spring plate (304), and a metal rod (305) is fixedly connected to the middle position of the bottom of the lower spring plate (304) in the vertical direction.

2. The dome-type membrane switch of claim 1, wherein: an isolation layer (6) is arranged in the horizontal direction of one side, away from the panel glue layer (4), of the upper circuit board (5), a lower circuit board (7) is arranged in the horizontal direction of one side, away from the upper circuit board (5), of the isolation layer (6), and the upper circuit board (5) and the lower circuit board (7) are symmetrically arranged along the horizontal center line of the isolation layer (6).

3. The dome-type membrane switch of claim 2, wherein: the plate body bottom horizontal direction of lower circuit board (7) is provided with waterproof layer (10), one side horizontal direction fixedly connected with backing plate (11) of lower circuit board (7) are kept away from to waterproof layer (10), the outside one side position horizontal direction fixed connection of plate body of lower circuit board (7) has lead wire (8), the one end fixed mounting that lower circuit board (7) were kept away from in lead wire (8) has dupont plug (9).

4. The dome-type membrane switch of claim 3, wherein: the structure is characterized in that a fixed seat (12) is fixedly connected to one side of the bottom of the backing plate (11), a clamping groove (120) is formed in the seat body of the fixed seat (12), and a heat conducting fin (13) is fixedly arranged on one side of the outer portion of the groove body of the clamping groove (120) in the horizontal direction.

Images