CN214753460U

CN214753460U - Electronic membrane switch

Info

Publication number: CN214753460U
Application number: CN202120696660.3U
Authority: CN
Inventors: 黄远常; 张方英; 陈俊; 汤俊峰; 宋来毅
Original assignee: Guangzhou Kay-Ee Membrane Keyboard Switch Corp
Current assignee: Guangzhou Kay-Ee Membrane Keyboard Switch Corp
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-11-16
Anticipated expiration: 2031-04-06

Abstract

The utility model belongs to the technical field of the membrane switch, concretely relates to electron membrane switch, including lower panel, top panel, the insulating boss of rectangle, lower feeler, go up feeler, button and stretching mechanism, stretching mechanism is including four springs, two act as go-between, four stoppers and a roof, and four step holes are the rectangle subsection, and four springs assemble respectively at four step downthehole and stopper butt, and two both ends of acting as go-between are equallyd divide do not with two relative stopper fixed connection that set up, and two act as go-between pass two through-holes respectively, the utility model discloses simple structure, reasonable in design, when pressing the button, drag two middle parts of acting as go-between simultaneously, make the stopper be close to the insulating boss center of rectangle to make the spring compression, when the staff loosens and presses the button, with two act as go-between taut, thereby guarantee the reseing of top panel.

Description

Electronic membrane switch

Technical Field

The utility model belongs to the technical field of the membrane switch, concretely relates to electron membrane switch.

Background

Membrane switch structure is rigorous, the appearance is pleasing to the eye, the leakproofness is good, moisture-proof has, characteristics such as long service life, wide application in electronic communication, electronic measurement's instrument, industrial control, medical equipment, the automobile industry, intelligent toy, fields such as domestic appliance, membrane switch is inside to be provided with feeler and lower feeler, set up again in the membrane switch with the arc shell fragment of last feeler butt, when pressing membrane switch, top panel extrusion arc shell fragment, arc shell fragment warp downwards, until last feeler and lower feeler contact, press the completion back, stretch through arc shell fragment, make and go up feeler and lower feeler part, the top panel resets, but after long-time the use, arc shell fragment is through pressing many times, produce easily and warp the influence effect of kick-backing, often can not separate after can going up feeler and the lower feeler contact.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the electronic membrane switch is good in reset effect, and ensures that the upper panel is reset and the upper contact block is separated from the lower contact block in the long-term use process.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows:

an electronic membrane switch comprises a lower panel, an upper panel, a rectangular insulating boss, a lower contact block, an upper contact block, a key and a stretching mechanism, wherein the rectangular insulating boss is arranged on the upper side of the lower panel, the lower contact block is positioned in the center of the rectangular insulating boss and is arranged on the upper surface of the lower panel, the upper panel is fixedly connected with the upper side of the rectangular insulating boss, the upper contact block is fixedly connected with the lower side of the upper panel, the key is fixedly connected with the upper side of the upper panel, the stretching mechanism comprises four springs, two pull wires, four limit blocks and a top plate, two step holes matched with the limit blocks are arranged on the left side and the right side of the rectangular insulating boss, the four step holes are rectangular subsections, the four limit blocks are respectively assembled at the bottoms of the four step holes in a sliding manner, the four springs are respectively assembled in the four step holes and abutted against the limit blocks, and two ends of the pull wires are respectively fixedly connected with the two limit blocks which are oppositely arranged, through holes matched with the pull wires are formed in the front side and the rear side of the top plate, and the two pull wires penetrate through the two through holes respectively.

The working principle is as follows: the working personnel press the key downwards to drive the upper panel to bend downwards so as to drive the top panel to bend downwards, the top panel bends downwards, the middle parts of the two pull wires are driven to bend downwards, the two ends of the pull wires are pulled, the two limiting blocks are pulled to be close to each other by the two ends of the pull wires, the spring is compressed until the upper contact block moves downwards to contact with the lower contact block, the contact process is completed, after the working personnel release the press key, the limiting blocks are pushed into the step holes through the extension of the spring, the pull wires are tensioned, the top panel is lifted upwards, and therefore the lower panel is guaranteed to reset; due to the design of the two pull wires, the stress is uniform, and the resetting effect is improved;

the left side and the right side of the rectangular insulating boss are respectively provided with an air hole, and the two air holes are communicated with the center of the rectangular insulating boss.

With the structure, when a worker presses the key, air in the center of the rectangular insulating boss can be discharged through the air holes, and the pressing comfort is improved.

The upper surface of the lower panel is provided with an arc-shaped elastic sheet, the protruding arc surface of the arc-shaped elastic sheet faces upwards, and the center of the arc-shaped elastic sheet is provided with a through hole matched with the upper contact block.

Such structure further supports the top panel through arc shell fragment, improves resilience efficiency.

The lower panel is composed of a circuit layer, a lower insulating layer and a PET material bottom plate from top to bottom.

With this structure, the heat-resistant effect of the lower side of the switch can be improved, and the leakage phenomenon of the lower side of the switch can be prevented.

The upper panel is composed of a PET panel and an upper insulating layer from top to bottom.

With this structure, the heat-resistant effect on the upper side of the switch is improved, and the leakage phenomenon on the upper side of the switch is prevented.

The utility model discloses simple structure, reasonable in design when pressing the button, drags two middle parts of acting as go-between simultaneously, makes the stopper be close to the insulating boss center of rectangle to make spring compression, when the staff loosens when pressing the button, it is taut with two acting as go-between, thereby guarantee the reseing of top panel.

Drawings

The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

fig. 1 is a schematic structural diagram of an embodiment of an electronic membrane switch according to the present invention;

fig. 2 is a schematic cross-sectional view of an embodiment of an electronic membrane switch according to the present invention;

fig. 3 is a schematic cross-sectional structure diagram of an embodiment of an electronic membrane switch according to the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;

the main element symbols are as follows:

the circuit board comprises a lower panel 1, an upper panel 11, a rectangular insulating boss 12, a lower contact block 13, an upper contact block 14, a key 15, a spring 2, a stay wire 21, a limiting block 22, a top plate 23, a stepped hole 24, a through hole 25, an air vent 3, an arc-shaped elastic sheet 31, a through hole 32, a circuit layer 4, a lower insulating layer 41, a PET material bottom plate 42, a PET material panel 43 and an upper insulating layer 44.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.

As shown in FIGS. 1-4, the electronic membrane switch of the present invention comprises a lower panel 1, an upper panel 11, a rectangular insulating boss 12, a lower contact block 13, an upper contact block 14, a key 15 and a stretching mechanism, wherein the rectangular insulating boss 12 is installed on the upper side of the lower panel 1, the lower contact block 13 is located at the center of the rectangular insulating boss 12 and is installed on the upper surface of the lower panel 1, the upper panel 11 is fixedly connected with the upper side of the rectangular insulating boss 12, the upper contact block 14 is fixedly connected with the lower side of the upper panel 11, the key 15 is fixedly connected with the upper side of the upper panel 11, the stretching mechanism comprises four springs 2, two pull wires 21, four stoppers 22 and a top plate 23, two step holes 24 matched with the stoppers 22 are respectively arranged on the left and right sides of the rectangular insulating boss 12, the four step holes 24 are rectangular subsections, the four stoppers 22 are respectively assembled at the bottoms of the four step holes 24 in a sliding manner, four springs 2 assemble respectively in four step holes 24 with stopper 22 butt, two stopper 22 fixed connection who do not set up with two relatively are equallyd divide at the both ends of acting as go-between 21, and both sides all are equipped with and act as go-between 21 assorted through-hole 25 around roof 23, and two act as go-between 21 pass two through-holes 25 respectively, the utility model discloses simple structure, reasonable in design when pressing button 15, drags two 21 middle parts of acting as go-between simultaneously, makes stopper 22 be close to the insulating boss 12 center of rectangle to make the compression of spring 2, when the staff loosens and presses button 15, take-up two 21 of acting as go-between taut, thereby guarantee upper panel 11's the reseing.

The working principle is as follows: the worker presses the key 15 downwards to drive the upper panel 11 to bend downwards, so as to drive the top plate 23 to bend downwards, the top plate 23 bends downwards, the middle parts of the two pull wires 21 are driven to bend downwards, the two ends of the pull wires 21 are pulled, the two ends of the pull wires 21 pull the two limit blocks 22 to approach each other, so that the springs 2 are compressed until the upper contact blocks 14 move downwards to contact with the lower contact blocks 13, and the contact process is completed; due to the design of the two pull wires 21, the stress is uniform, and the resetting effect is improved;

the left side and the right side of the rectangular insulating boss 12 are respectively provided with an air hole 3, and the two air holes 3 are communicated with the center of the rectangular insulating boss 12. When the staff presses the key 15, the air in the center of the rectangular insulating boss 12 can be discharged through the air holes 3, and the pressing comfort is improved. In fact, other structures can be considered according to the situation, and the comfort of pressing is improved.

The upper surface of the lower panel 1 is provided with an arc-shaped elastic sheet 31, the protruding arc surface of the arc-shaped elastic sheet 31 faces upwards, and the center of the arc-shaped elastic sheet 31 is provided with a through hole 32 matched with the upper contact block 14. Further support top panel 11 through arc shell fragment 31, improve resilience efficiency. In fact, other structures can be considered according to the situation, and the rebound efficiency is improved.

The lower panel 1 is composed of a circuit layer 4, a lower insulating layer 41 and a PET material bottom plate 42 from top to bottom. The heat-resistant effect of the lower side of the switch can be improved, and the phenomenon of electric leakage of the lower side of the switch can be prevented. In fact, other structures can be considered according to the situation, so that the heat-resisting effect of the lower side of the switch is improved, and the phenomenon of electric leakage of the lower side of the switch is also prevented.

The upper panel 11 is composed of a PET panel 43 and an upper insulating layer 44, respectively, from top to bottom. The heat-resistant effect of the upper side of the switch can be improved, and the phenomenon of electric leakage on the upper side of the switch can be prevented. In fact, other configurations may be used depending on the situation, so that the heat-resistant effect on the upper side of the switch is improved, and the leakage phenomenon on the upper side of the switch is prevented.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. An electronic membrane switch, comprising: the touch screen comprises a lower panel, an upper panel, a rectangular insulating boss, a lower contact block, an upper contact block, a key and a stretching mechanism;

the rectangular insulation boss is arranged on the upper side of the lower panel, the lower contact block is positioned in the center of the rectangular insulation boss and is arranged on the upper surface of the lower panel, the upper panel is fixedly connected with the upper side of the rectangular insulation boss, the upper contact block is fixedly connected with the lower side of the upper panel, and the key is fixedly connected with the upper side of the upper panel;

stretching mechanism is including four springs, two act as go-between, four stoppers and a roof, the insulating boss left and right sides of rectangle all be equipped with two with stopper assorted step hole, four the step hole is the rectangle subsection, four the stopper slides respectively and assembles in four step hole bottoms, four the spring assemble respectively in four step holes downthehole with the stopper butt, two the stopper fixed connection who does not set up with two relatively is equallyd divide at the both ends of acting as go-between, both sides all are equipped with and act as go-between assorted through-hole, two around the roof the act as go-between passes two through-holes respectively.

2. The electronic membrane switch of claim 1, wherein: the left side and the right side of the rectangular insulating boss are respectively provided with an air hole, and the two air holes are communicated with the center of the rectangular insulating boss.

3. The electronic membrane switch of claim 1, wherein: the upper surface of the lower panel is provided with an arc-shaped elastic sheet, the protruding arc surface of the arc-shaped elastic sheet faces upwards, and the center of the arc-shaped elastic sheet is provided with a through hole matched with the upper contact block.

4. The electronic membrane switch of claim 1, wherein: the lower panel is composed of a circuit layer, a lower insulating layer and a PET material bottom plate from top to bottom.

5. The electronic membrane switch of claim 1, wherein: the upper panel is composed of a PET panel and an upper insulating layer from top to bottom.