Membrane switch

A membrane switch and relationship technology, applied in the field of electrical switches, can solve the problems of corroded conductors, poor use comfort, poor contact, etc., and achieve the effects of avoiding oxidation and corrosion, good pressing comfort, and short connection distance.

Active Publication Date: 2021-08-13
KUNSHAN JOING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The pressing air cavity is connected to the airway. When the airway is compressed, the air pressure in the pressing air cavity will increase, and a large force is required to press the substrate to realize the compression of the pressing air cavity, and the use comfort is poor;
[000

Method used

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Experimental program
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Effect test

Embodiment 1

[0029] Such as Figure 1-2 As shown, the membrane switch provided by the present invention includes an upper substrate 10, a partition 20 and a lower substrate 30 arranged sequentially from top to bottom. The upper substrate 10 and the lower substrate 30 are both flexible thin film plates. The first through hole passing through the partition plate 20 in the up and down direction, the cross section of the first through hole is circular, surrounded by the hole wall 21 of the first through hole, the lower surface 11 of the upper substrate 10, and the upper surface 32 of the lower substrate 30. The formed cavity forms a pressing air chamber 40, and a conductor is arranged in the pressing air chamber 40, and the conductor includes an upper conductor 51 arranged on the lower surface 11 of the upper substrate 10 and a lower conductor 52 arranged on the upper surface 32 of the lower substrate 30, The spacer 20 is airtightly connected with the upper substrate 10 and the lower substrate...

Embodiment 2

[0035] Such as image 3 As shown, the second embodiment is substantially the same as the first embodiment, the difference is that in the second embodiment, there are eight second through holes 31 communicating with a single pressing air chamber 40, and the eight second through holes 31 use the first The through-holes are distributed in a circular array with the axis line as the center. The advantage of this arrangement is that it can further reduce the impact on the strength of the lower substrate 30 under the premise of ensuring the communication area. When pressing, it can also balance the pressure in the air cavity 40. local air pressure to avoid the phenomenon that the upper substrate 10 is skewed due to the increase of local air pressure.

[0036] The membrane switch provided by the present invention adopts the idea of ​​reducing the difficulty of water entering and leaving the pressing air cavity when water enters the pressing air cavity, and avoids the oxidation and cor...

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Abstract

The invention provides a membrane switch comprising an upper substrate, a partition plate and a lower substrate which are sequentially arranged from top to bottom; a first through hole penetrating through the partition plate is formed in the partition plate, a cavity defined by the hole wall of the first through hole, the lower surface of the upper substrate and the upper surface of the lower substrate forms a pressing air cavity, and electric conductors are arranged in the pressing air cavity; the electric conductors are arranged on the surfaces of the opposite sides of the upper substrate and the lower substrate; the partition plate is connected with the upper substrate and the lower substrate in a sealed mode; the lower substrate is provided with second through holes communicating the pressing air cavity with the outside, the outer walls of the electric conductors are provided with isolation layers, and conduction of the upper electric conductors and the lower electric conductors is achieved through mutual contact of the isolation layers; therefore, the pressing air cavity is communicated with the outside only through second through holes, the communication distance is short, the drainage and exhaust efficiency is high, the pressing comfort is good, and the drainage performance is good; the electric conductors can be isolated from air and water in the pressing air cavity through the isolation layers, oxidation and corrosion of the electric conductors are avoided, and the technical effect that the original function is restored after water is drained is achieved.

Description

technical field [0001] The invention relates to the technical field of electric switches, in particular to a membrane switch. Background technique [0002] Membrane switch is a new type of electronic switch, which is used to control the on-off of the circuit where it is located. It is widely used in the assembly of various key panels, computer keyboards and other products. Most of the existing membrane switches include: upper and lower substrates, formed between the upper and lower substrates The pressing air chamber, the conductor located in the pressing air chamber and arranged on the surface of the upper and lower substrates opposite to each other, when the membrane switch is pressed, the upper and lower substrates are deformed, and the pressing air chamber is compressed, so that the conductor is connected to the circuit where the membrane switch is located, realizing signal output. [0003] For this type of membrane switch, in order to achieve compression and rebound of...

Claims

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Application Information

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IPC IPC(8): H01H13/703H01H13/704H01H13/06
CPCH01H13/06H01H13/703H01H13/704
Inventor 丁秀琴张勰军卢俊生吴磊黄三明
Owner KUNSHAN JOING TECH
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