CN214152760U - Membrane switch, membrane switch key and membrane switch keyboard - Google Patents
Membrane switch, membrane switch key and membrane switch keyboard Download PDFInfo
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- CN214152760U CN214152760U CN202022053448.3U CN202022053448U CN214152760U CN 214152760 U CN214152760 U CN 214152760U CN 202022053448 U CN202022053448 U CN 202022053448U CN 214152760 U CN214152760 U CN 214152760U
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/704—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by the layers, e.g. by their material or structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
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- Push-Button Switches (AREA)
Abstract
The embodiment of the application discloses membrane switch, membrane switch button and membrane switch keyboard, this membrane switch includes: first circuit layer and the second circuit layer of relative setting, this first circuit layer includes first contact, and this second circuit layer includes the second contact, and this first contact and this second contact relative setting, wherein, this membrane switch still includes: the air escape layer is positioned between the first circuit layer and the second circuit layer or positioned outside the first circuit layer or the second circuit layer and comprises an air escape channel, and a channel between the first contact and the second contact is communicated with the air escape channel; when the first circuit layer and the second circuit layer are stressed to be relatively close to each other, the first contact is contacted with the second contact to form electrical conduction. From this, to flee the gas layer and be independent of the circuit layer setting, can will flee the gas way and keep apart with the circuit, can furthest increase the glue film width, improve waterproof ability.
Description
Technical Field
The embodiment of the application relates to the technical field of electronic equipment, in particular to a membrane switch, membrane switch keys and a membrane switch keyboard.
Background
The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel. The method is widely applied to the fields of electronic communication and electronic measurement instruments, industrial control, medical equipment, automobile industry, intelligent toys, household appliances and the like.
The existing membrane switch comprises three layers of membranes and a circuit, wherein the membranes are bonded through water glue, and an air escape passage and a lead are distributed in a glue layer.
However, will escape air flue, circuit and glue film setting and be in same layer, occupy the glue film space, and escape the air flue and lead to producing the bubble in the glue film easily, lead to bonding effect not good, influence membrane switch's waterproof performance.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a membrane switch, a membrane switch key and a membrane switch keyboard, and solves the problems of poor bonding effect and poor waterproof performance of the membrane switch key.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: in a first aspect of embodiments of the present application, there is provided a membrane switch, including: first circuit layer and the second circuit layer of relative setting, this first circuit layer includes first contact, and this second circuit layer includes the second contact, and this first contact and this second contact relative setting, wherein, this membrane switch still includes: the air escape layer is positioned between the first circuit layer and the second circuit layer or positioned outside the first circuit layer or the second circuit layer and comprises an air escape channel, and a channel between the first contact and the second contact is communicated with the air escape channel; when the first circuit layer and the second circuit layer are stressed to be relatively close to each other, the first contact is contacted with the second contact to form electrical conduction. From this, to flee the gas layer and be independent of the circuit layer setting, can will flee the air flue and keep apart with the circuit, can furthest increase the glue film width, improve waterproof ability, avoid membrane switch to be corroded.
In a possible design, according to the first aspect, the membrane switch further comprises: the first thin film layer, the second thin film layer and the third thin film layer are stacked, wherein the first surface of the first thin film layer is opposite to the second surface of the third thin film layer, the second thin film layer is located between the first thin film layer and the third thin film layer, the first circuit layer is arranged on the first surface of the first thin film layer, a first glue layer is arranged between the first thin film layer and the second thin film layer, the second circuit layer is arranged on the second surface of the third thin film layer, a second glue layer is arranged between the second thin film layer and the third thin film layer, and channels communicated with the first contact and the second contact are arranged on the first glue layer, the second thin film layer and the second glue layer. Therefore, when the membrane switch is pressed, the gas in the membrane switch can be communicated with the outside through the channel and the air escape channel.
According to the first aspect, in one possible design, the membrane switch further includes a fourth membrane layer located between the first membrane layer and the second membrane layer, the air escape layer is disposed between the fourth membrane layer and the second membrane layer, the fourth membrane layer is provided with a first opening, and a channel between the first contact and the second contact is communicated with the air escape channel through the first opening. From this, can be independent of first circuit layer and the setting of second circuit layer with the layer of fleing the gas, can furthest increase the glue width, improved waterproof ability.
According to the first aspect, in one possible design, the membrane switch further includes a fourth membrane layer located between the second membrane layer and the third membrane layer, the air escape layer is disposed between the fourth membrane layer and the second membrane layer, the fourth membrane layer is provided with a first opening, and a channel between the first contact and the second contact is communicated with the air escape channel through the first opening. Therefore, the position of the air escape layer can be flexibly selected.
According to the first aspect, in one possible design, the membrane switch further includes a fourth membrane layer located on a side of the first membrane layer away from the second membrane layer, and the air escape layer is disposed between the fourth membrane layer and the first membrane layer, wherein a second opening is disposed on the first contact and the first membrane layer, and a channel between the first contact and the second contact is communicated with the air escape channel through the second opening. Therefore, the second opening is formed in the first contact and the first thin film layer, the channel between the first contact and the second contact can be communicated with the air escape channel through the second opening, the air escape layer can be arranged above the first circuit layer, and the position is more flexible.
According to the first aspect, in one possible design, the membrane switch further includes a fourth membrane layer located on a side of the third membrane layer away from the second membrane layer, and the air escape layer is disposed between the fourth membrane layer and the third membrane layer, wherein a third opening is disposed on the second contact and the third membrane layer, and a channel between the first contact and the second contact is communicated with the air escape channel through the third opening. Therefore, the third openings are formed in the second contact and the third thin film layer, so that the channel between the first contact and the second contact is communicated with the air escape channel through the third openings, the air escape layer can be arranged above the second circuit layer, and the position is more flexible.
In a possible design, according to the first aspect, the first glue layer or the second glue layer comprises: at least one of epoxy resin, acrylic acid, polyurethane, polyester and silica gel. From this, need not to make in first glue film and second glue film and escape the air flue, first glue film and second glue film need not accomplish through the printing process, can select other bonding properties better, are difficult to produce the bonding material and the technology of bubble, no longer confine to the water glue, have improved waterproof ability.
According to a first aspect, in one possible design, the gas escape layer comprises: the third adhesive layer is provided with the air escape channel. From this, can avoid escaping the air flue and with first circuit layer and second circuit layer with the layer, avoid too much occupation glue film space.
In a possible design according to the first aspect, the third glue layer comprises a water glue. Therefore, the air escape channel is arranged in the third adhesive layer, the third adhesive layer can be made of water adhesive, and the printing process can be completed.
In a possible design, according to the first aspect, the first circuit layer further includes: a first circuit; the second circuit layer further includes: a second circuit; the first circuit is electrically connected with the first contact, and the second circuit is electrically connected with the second contact. Thereby, the first contact may be powered by the first circuit and the second contact may be powered by the second circuit.
In a second aspect of the present application, there is provided a membrane switch key comprising: a membrane switch as described above; the keycap is arranged above the membrane switch; the elastic piece is arranged between the keycap and provided with a bulge, the position of the bulge corresponds to the first contact, and the bulge is provided with a central axis; when force is applied to the keycap, the protrusion is driven to move along the direction of the central axis, and the protrusion is contacted with the membrane switch, so that the first contact is contacted with the second contact to form electrical conduction. Therefore, the membrane switch key adopts the membrane switch, has the same effect as the membrane switch, and is not described again.
In a third aspect of the present application, there is provided a membrane switch keypad comprising a plurality of membrane switch keys as described above. Therefore, the membrane switch keyboard has the same effect as the membrane switch, and the description is omitted.
Drawings
FIG. 1 is a schematic structural diagram of a membrane switch;
FIG. 2a is a cross-sectional view A-A of FIG. 1;
FIG. 2B is a cross-sectional view B-B of FIG. 1;
FIG. 3a is another cross-sectional view A-A of FIG. 1;
FIG. 3B is another cross-sectional view B-B of FIG. 1;
FIG. 4a is another cross-sectional view A-A of FIG. 1;
FIG. 4B is another cross-sectional view B-B of FIG. 1;
FIG. 5a is another cross-sectional view A-A of FIG. 1;
FIG. 5B is another cross-sectional view B-B of FIG. 1;
FIG. 6a is another cross-sectional view A-A of FIG. 1;
FIG. 6B is another cross-sectional view B-B of FIG. 1;
fig. 7 is a schematic structural diagram of a membrane switch key according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.
In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
Further, in the present application, directional terms such as "upper" and "lower" are defined with respect to a schematically-disposed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts that are used for descriptive and clarity purposes and that will vary accordingly with respect to the orientation in which the components are disposed in the drawings.
Hereinafter, terms that may appear in the embodiments of the present application are explained.
Water glue: an adhesive material, typically applied by a printing process to a film material, is used to bond two films together to provide a water-resistant effect.
An air escape passage: can be used for the membrane switch of keyboard, when the button was pressed, the inside gas of membrane switch can carry out the gas circulation with the external world through escaping the air flue.
The present application provides a membrane switch. Fig. 1 is a schematic structural diagram of a membrane switch. Fig. 2a is a sectional view taken along line a-a of fig. 1, and fig. 2B is a sectional view taken along line B-B of fig. 1. As shown in fig. 1, 2a, and 2b, the membrane switch 001 includes: the film comprises a first film layer 101, a second film layer 102 and a third film layer 103 which are stacked, wherein a first surface of the first film layer 101 is opposite to a second surface of the third film layer 103, and the second film layer 102 is located between the first film layer 101 and the third film layer 103.
Wherein, be equipped with first circuit layer on the first surface of first thin layer 101, first circuit layer includes: the first contact 1011 is electrically connected to the first circuit 1012, and the first contact 1011 is electrically connected to the first circuit 1012.
A second circuit layer is arranged on the second surface of the third thin film layer 103, and the second circuit layer comprises: the second contact 1031 and the second circuit 1032, and the second contact 1031 and the second circuit 1032 are electrically connected.
A first adhesive layer 10 is arranged between the first film layer 101 and the second film layer 102, a second adhesive layer 20 is arranged between the second film layer 102 and the third film layer 103, a first air escape passage 1001 is arranged in the first adhesive layer 10, and a second air escape passage 2001 is arranged in the second adhesive layer 20.
The first contact 1011 and the second contact 1031 are communicated, and a passage between the first contact 1011 and the second contact 1031 is communicated with the first escape path 1001 and the second escape path 2001.
When the membrane switch 001 is pressed, the first thin film layer 101 and the third thin film layer 103 are forced to be relatively close to each other, and the first contact 1011 is in contact with the second contact 1031 to form electrical conduction.
The first air escape passage 1001 and the second air escape passage 2001 are air passages, and when a key of the keyboard is pressed, air inside the membrane switch 001 can be communicated with the outside through the first air escape passage 1001 and the second air escape passage 2001.
The first adhesive layer 10 and the second adhesive layer 20 are formed on the surface of the film layer by printing, for example, with water glue. The glue is a bonding material, is usually coated on the film layer through a printing process, is used for bonding two film layers, has a waterproof effect, and is high in process complexity.
In addition, as shown in fig. 2a, the first circuit 1012 and the first air escape path 1001 are disposed on the same layer, and the second circuit 1032 and the second air escape path 2001 are disposed on the same layer, occupying the glue line space. In addition, the first air escape passage 1001 is disposed on the first adhesive layer 10, the second air escape passage 2001 is disposed on the second adhesive layer 20, and the glue process is prone to generate bubbles, which results in the reduction of glue width, affects the adhesive layer bonding effect, and affects the waterproof performance.
For this reason, the present embodiment improves the membrane switch 001 described above.
Fig. 3a is another sectional view a-a of fig. 1, and fig. 3B is another sectional view B-B of the same. As shown in fig. 1, 3a, and 3b, the membrane switch 001 further includes: the layer of fleing, it is located to escape the layer of qi between first circuit layer and the second circuit layer, or it is located first circuit layer or the second circuit layer outside to escape the layer of qi, it includes the air flue 3001 to escape the layer of qi, first contact 1011 with passageway between the second contact 1031 with escape the air flue 3001 intercommunication.
When the first circuit layer and the second circuit layer are relatively close to each other under stress, the first contact 1011 is in contact with the second contact 1031 to form electrical conduction.
The structure of the air escape layer is not limited in the embodiments of the present application, and in some embodiments of the present application, the air escape layer includes: and the third adhesive layer 30, wherein the air escape channel 3001 is arranged in the third adhesive layer 30.
The third glue layer 30 is formed on the surface of the film layer by printing with, for example, a water glue. The glue is an adhesive material, is usually coated on the film layer by a printing process, and is used for adhering two film layers to play a role in water resistance.
The first circuit layer includes: the first contact 1011 is electrically connected to a first circuit 1012, the first contact 1011 is electrically connected to the first circuit 1012, the first circuit 1012 is, for example, a silver wire, and the first circuit 1012 is used to supply power to the first contact 1011. The second circuit layer includes: a second contact 1031 and a second circuit 1032, the second contact 1031 and the second circuit 1032 being electrically connected, the second circuit 1032 being, for example, a silver wire, the second circuit 1032 being configured to supply power to the second contact 1031.
From this, flee the gas layer and be independent of the circuit layer setting, former first flee the air flue and the second flees the air flue position and all uses the glue to cover, can will flee the air flue and keep apart with the first circuit 1012 of first circuit layer and the second circuit 1032 of second circuit layer, can furthest increase the glue width, improved waterproof ability.
The embodiment of the present application does not limit the specific structure of the membrane switch 001, and the membrane switch 001 further includes: the multilayer printed circuit board comprises a first thin film layer 101, a second thin film layer 102 and a third thin film layer 103 which are arranged in a stacked mode, wherein a first surface of the first thin film layer 101 is opposite to a second surface of the third thin film layer 103, the second thin film layer 102 is located between the first thin film layer 101 and the third thin film layer 103, a first circuit layer is arranged on the first surface of the first thin film layer 101, a first glue layer 10 is arranged between the first thin film layer 101 and the second thin film layer 102, a second circuit layer is arranged on the second surface of the third thin film layer 103, a second glue layer 20 is arranged between the second thin film layer 102 and the third thin film layer 103, and channels communicated with air escape channels 3001 are arranged on the first glue layer 10, the second thin film layer 102 and the second glue layer 20 between a first contact 1011 and a second contact 1031.
The material of the first adhesive layer 10 and the second adhesive layer 20 is not limited in the embodiment of the application. The first adhesive layer 10 and the second adhesive layer 20 include, for example: at least one of epoxy resin, acrylic acid, polyurethane, polyester and silica gel.
Therefore, the air channel does not need to be escaped from the first adhesive layer 10 on the first circuit layer and the second adhesive layer 20 on the second circuit layer, the first adhesive layer 10 and the second adhesive layer 20 do not need to be completed through a printing process, other bonding materials and processes with better bonding performance and difficult bubble generation can be selected, the bonding materials and processes are not limited to water glue any more, and the waterproof capability is improved.
In some embodiments of the present application, the membrane switch 001 further comprises a fourth membrane layer 104. The fourth thin film layer 104 may be disposed on any layer of the thin film switch 001, for example, the fourth thin film layer 104 may be disposed between the first thin film layer 101 and the second thin film layer 102, between the second thin film layer 102 and the third thin film layer 103, on a side of the first thin film layer 101 away from the second thin film layer 102, or on a side of the third thin film layer 103 away from the second thin film layer 102. The gas escape layer includes, for example: a third glue layer 30 and an air escape channel 3001 arranged in the third glue layer 30.
For example, as shown in fig. 3a and 3b, the membrane switch 001 includes: a first thin film layer 101, a fourth thin film layer 104, a second thin film layer 102, and a third thin film layer 103 are stacked.
The first circuit layer is arranged on the first surface of the first thin film layer 101, the first adhesive layer 10 is arranged between the first thin film layer 101 and the second thin film layer 102, the second circuit layer is arranged on the second surface of the third thin film layer 103, and the second adhesive layer 20 is arranged between the second thin film layer 102 and the third thin film layer 103.
The first circuit layer includes: a first contact 1011 and a first circuit 1012, the second circuit layer comprising: a second contact 1031, and a second circuit 1032.
The gas escape layer is disposed between the fourth film layer 104 and the second film layer 102, and includes: a third glue layer 30 and an air escape channel 3001 arranged in the third glue layer 30.
And passages communicated with the air escape passages 3001 are arranged on the first adhesive layer 10, the second film layer 102 and the second adhesive layer 20 between the first contact 1011 and the second contact 1031.
In addition, a first opening 1041 is formed on the fourth film layer 104, and a passage between the first contact 1011 and the second contact 1031 is communicated with the air escape duct 3001 through the first opening.
When the membrane switch is pressed, the first membrane layer 101 and the third membrane layer 103 are stressed to be relatively close to each other, the first contact 1011 is contacted with the second contact 1031 to form electrical conduction, and at the moment, gas in the membrane switch can be in gas circulation with the outside through a channel between the first contact 1011 and the second contact 1031 and the gas escape channel 3001.
From this, flee the gas layer and be independent of the circuit layer setting, can fully keep apart with the circuit escaping air flue 3001, can furthest increase the glue width, improved waterproof ability.
In other embodiments of the present application, as shown in fig. 4a and 4b, the membrane switch 001 includes: a first thin film layer 101, a second thin film layer 102, a fourth thin film layer 104, and a third thin film layer 103 are stacked.
The first circuit layer is arranged on the first surface of the first thin film layer 101, the first adhesive layer 10 is arranged between the first thin film layer 101 and the second thin film layer 102, the second circuit layer is arranged on the second surface of the third thin film layer 103, and the second adhesive layer 20 is arranged between the second thin film layer 102 and the third thin film layer 103.
The first circuit layer includes: a first contact 1011 and a first circuit 1012, the second circuit layer comprising: a second contact 1031, and a second circuit 1032.
The gas escape layer is disposed between the fourth film layer 104 and the second film layer 102, and includes: a third glue layer 30 and an air escape channel 3001 arranged in the third glue layer 30.
And passages communicated with the air escape passages 3001 are arranged on the first adhesive layer 10, the second film layer 102 and the second adhesive layer 20 between the first contact 1011 and the second contact 1031.
A first opening 1041 is formed in the fourth film layer 104, and a passage between the first contact 1011 and the second contact 1031 is communicated with the air escape duct 3001 through the first opening.
When the membrane switch is pressed, the first membrane layer 101 and the third membrane layer 103 are stressed to be relatively close to each other, the first contact 1011 is contacted with the second contact 1031 to form electrical conduction, and at the moment, gas in the membrane switch can be in gas circulation with the outside through a channel between the first contact 1011 and the second contact 1031 and the gas escape channel 3001.
Therefore, the position of the air escape layer in the membrane switch can be adjusted, and the flexibility is higher.
In other embodiments of the present application, as shown in fig. 5a and 5b, the membrane switch 001 includes: a fourth thin film layer 104, a first thin film layer 101, a second thin film layer 102, and a third thin film layer 103 are stacked.
The first circuit layer is arranged on the first surface of the first thin film layer 101, the first adhesive layer 10 is arranged between the first thin film layer 101 and the second thin film layer 102, the second circuit layer is arranged on the second surface of the third thin film layer 103, and the second adhesive layer 20 is arranged between the second thin film layer 102 and the third thin film layer 103.
The first circuit layer includes: a first contact 1011 and a first circuit 1012, the second circuit layer comprising: a second contact 1031, and a second circuit 1032.
The fourth thin film layer 104 is located on a side of the first thin film layer 101 away from the second thin film layer 102. The gas escape layer is disposed between the fourth film layer 104 and the first film layer 101, and includes: a third glue layer 30 and an air escape channel 3001 arranged in the third glue layer 30.
A second opening 3002 is provided on the first contact 1011 and the first film layer 101, and a passage between the first contact 1011 and the second contact 1031 is communicated with the air escape duct 3001 through the second opening 3002.
When the membrane switch is pressed, the first membrane layer 101 and the third membrane layer 103 are stressed to be relatively close to each other, the first contact 1011 is contacted with the second contact 1031 to form electrical conduction, and at the moment, gas in the membrane switch can be in gas circulation with the outside through a channel between the first contact 1011 and the second contact 1031 and the gas escape channel 3001.
Thereby, the position selection of the air escape layer in the membrane switch is further increased.
In other embodiments of the present application, as shown in fig. 6a and 6b, the membrane switch 001 includes: a first thin film layer 101, a second thin film layer 102, a third thin film layer 103, and a fourth thin film layer 104 are stacked.
The first circuit layer is arranged on the first surface of the first thin film layer 101, the first adhesive layer 10 is arranged between the first thin film layer 101 and the second thin film layer 102, the second circuit layer is arranged on the second surface of the third thin film layer 103, and the second adhesive layer 20 is arranged between the second thin film layer 102 and the third thin film layer 103.
The first circuit layer includes: a first contact 1011 and a first circuit 1012, the second circuit layer comprising: a second contact 1031, and a second circuit 1032.
The fourth thin film layer 104 is located on the side of the third thin film layer 103 far from the second thin film layer 102, and the air escape layer is arranged between the fourth thin film layer 104 and the third thin film layer 103. The gas escape layer comprises: a third glue layer 30 and an air escape channel 3001 arranged in the third glue layer 30.
A third opening 3003 is provided on the second contact 1031 and the third film layer 103, and a passage between the first contact 1011 and the second contact 1031 is communicated with the air escape duct 3001 through the third opening.
When the membrane switch is pressed, the first membrane layer 101 and the third membrane layer 103 are stressed to be relatively close to each other, the first contact 1011 is contacted with the second contact 1031 to form electrical conduction, and at the moment, gas in the membrane switch can be in gas circulation with the outside through a channel between the first contact 1011 and the second contact 1031 and the gas escape channel 3001.
Thereby, the position selection of the air escape layer in the membrane switch is further increased.
The material of the first adhesive layer 10, the second adhesive layer 20 and the third adhesive layer 30 is not limited in the embodiment of the application, and the first adhesive layer 10, the second adhesive layer 20 and the third adhesive layer 30 include at least one of water glue and hot melt glue.
The embodiment of the application does not limit the material of the first thin film layer 101, the second thin film layer 102, the third thin film layer 103 and the fourth thin film layer 104, and the first thin film layer 101, the second thin film layer 102, the third thin film layer 103 and the fourth thin film layer 104 can be made of, for example, a liquid polyester resin (PET) film.
As shown in fig. 7, the membrane switch 001 key according to the embodiment of the present application includes: a key cap, a spring, a support structure, and a membrane switch 001 as described above.
Wherein, the key cap 002 is arranged above the membrane switch 001.
When the user application of force in the key cap 002, the drive protruding 0031 is followed the central axis direction removes, protruding 0031 with membrane switch 001 contact makes first contact 1011 with the contact of second contact 1031 forms the electrical conductivity and switches on, and after the user loosened the button, protruding 0031 rebounded, and the circuit disconnection, the return circuit triggered a signal.
Therefore, the membrane switch key adopts the membrane switch, has the same effect as the membrane switch, and is not described again.
The embodiment of the application also provides a membrane switch keyboard, for example, the membrane switch keyboard comprises a plurality of membrane switch keys as described above.
The membrane switch keyboard can be used in products with keyboards, such as tablet computers, mobile phones, electronic readers, remote controllers, Personal Computers (PCs), notebook computers, Personal Digital Assistants (PDAs), vehicle-mounted devices, and web tvs. The embodiment of the present application does not specifically limit the specific form of the terminal.
The membrane switch keyboard has the same effect as the membrane switch, and is not described in detail herein.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (11)
1. A membrane switch, comprising: first circuit layer and the second circuit layer of relative setting, first circuit layer includes the first contact, the second circuit layer includes the second contact, first contact and the second contact sets up relatively, wherein, the membrane switch still includes: the air escape layer is positioned between the first circuit layer and the second circuit layer or positioned outside the first circuit layer or the second circuit layer, the air escape layer comprises an air escape channel, and a channel between the first contact and the second contact is communicated with the air escape channel;
when the first circuit layer and the second circuit layer are stressed to be relatively close to each other, the first contact is contacted with the second contact to form electrical conduction.
2. The membrane switch of claim 1, further comprising: the first thin film layer, the second thin film layer and the third thin film layer are stacked, the first surface of the first thin film layer is opposite to the second surface of the third thin film layer, the second thin film layer is located between the first thin film layer and the third thin film layer, the first circuit layer is arranged on the first surface of the first thin film layer, a first adhesive layer is arranged between the first thin film layer and the second thin film layer, the second circuit layer is arranged on the second surface of the third thin film layer, a second adhesive layer is arranged between the second thin film layer and the third thin film layer, and a channel communicated with the first contact and the channel between the second contacts is formed in the first adhesive layer, the second thin film layer and the second adhesive layer.
3. The membrane switch of claim 2, further comprising a fourth membrane layer, the fourth membrane layer being located between the first membrane layer and the second membrane layer, the air escape layer being disposed between the fourth membrane layer and the second membrane layer, the fourth membrane layer being provided with a first opening, and a channel between the first contact and the second contact being in communication with the air escape channel through the first opening.
4. The membrane switch of claim 2, further comprising a fourth membrane layer, the fourth membrane layer being located between the second membrane layer and the third membrane layer, the air escape layer being disposed between the fourth membrane layer and the second membrane layer, the fourth membrane layer being provided with a first opening, and a channel between the first contact and the second contact being in communication with the air escape channel through the first opening.
5. The membrane switch of claim 2, further comprising a fourth membrane layer located on a side of the first membrane layer away from the second membrane layer, wherein the air escape layer is disposed between the fourth membrane layer and the first membrane layer, wherein a second opening is disposed on the first contact and the first membrane layer, and a channel between the first contact and the second contact is communicated with the air escape channel through the second opening.
6. The membrane switch of claim 2, further comprising a fourth membrane layer located on a side of the third membrane layer away from the second membrane layer, wherein the air escape layer is disposed between the fourth membrane layer and the third membrane layer, wherein a third opening is disposed on the second contact and the third membrane layer, and a channel between the first contact and the second contact is communicated with the air escape channel through the third opening.
7. The membrane switch of any one of claims 1-6, wherein the gas escape layer comprises: and the third adhesive layer is internally provided with the air escape channel.
8. The membrane switch of claim 7, wherein the third glue layer comprises water glue.
9. The membrane switch of any one of claims 1-6, 8, wherein the first circuit layer further comprises: a first circuit;
the second circuit layer further comprises: a second circuit;
the first circuit is electrically connected to the first contact and the second circuit is electrically connected to the second contact.
10. A membrane switch key, comprising:
the membrane switch of any one of claims 1-9;
the keycap is arranged above the membrane switch;
the elastic piece is arranged between the keycap and provided with a bulge, the position of the bulge corresponds to the first contact, and the bulge is provided with a central axis;
when force is applied to the keycap, the protrusion is driven to move along the direction of the central axis, and the protrusion is contacted with the membrane switch, so that the first contact is contacted with the second contact to form electrical conduction.
11. A membrane switch keypad comprising a plurality of membrane switch keys according to claim 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022053448.3U CN214152760U (en) | 2020-09-17 | 2020-09-17 | Membrane switch, membrane switch key and membrane switch keyboard |
| PCT/CN2021/110885 WO2022057496A1 (en) | 2020-09-17 | 2021-08-05 | Membrane switch, membrane switch key and membrane switch keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022053448.3U CN214152760U (en) | 2020-09-17 | 2020-09-17 | Membrane switch, membrane switch key and membrane switch keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214152760U true CN214152760U (en) | 2021-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022053448.3U Active CN214152760U (en) | 2020-09-17 | 2020-09-17 | Membrane switch, membrane switch key and membrane switch keyboard |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN214152760U (en) |
| WO (1) | WO2022057496A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001118458A (en) * | 1999-10-19 | 2001-04-27 | Oki Electric Ind Co Ltd | Dust-proof structure for membrane keyboard |
| CN201126776Y (en) * | 2007-11-20 | 2008-10-01 | 精模电子科技（深圳）有限公司 | Water-proof keyboard circuit board structure with pneumathode |
| CN106847592B (en) * | 2017-01-25 | 2019-09-27 | 苏州达方电子有限公司 | Thin film switch structure and its manufacturing method |
-
2020
- 2020-09-17 CN CN202022053448.3U patent/CN214152760U/en active Active
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2021
- 2021-08-05 WO PCT/CN2021/110885 patent/WO2022057496A1/en active Application Filing
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| WO2022057496A1 (en) | 2022-03-24 |
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