CN201167051Y - Key-press film switch for an electric appliance - Google Patents
Key-press film switch for an electric appliance Download PDFInfo
- Publication number
- CN201167051Y CN201167051Y CNU2008200923399U CN200820092339U CN201167051Y CN 201167051 Y CN201167051 Y CN 201167051Y CN U2008200923399 U CNU2008200923399 U CN U2008200923399U CN 200820092339 U CN200820092339 U CN 200820092339U CN 201167051 Y CN201167051 Y CN 201167051Y
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- district
- button
- pet film
- thin film
- film switch
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Abstract
The utility model relates to a film switch for an electrical appliance depressed key, which includes a PET film (2), a gluewater layer (3) arranged on the lower surface of the PET film, and a metal spring leaf (4) stuck to the PET film through the gluewater layer. The gluewater layer distributed on the lower surface of the PET film includes a back-adhesive area and a preventing area; the back-adhesive area includes a peripheral back-adhesive area and a point back-adhesive area corresponding to the metal spring leaf; the preventing area includes annular preventing areas surrounding the point back-adhesive area and connection preventing areas connected with the annular preventing areas; one annular preventing area is communicated with at least one annular preventing area through the connection preventing areas; and the peripheral back-adhesive area is arranged at the periphery of the preventing area. The film switch has the advantages of good closeness, dust prevention and exhaust capacity, thereby ensuring good usability and reliability of the film switch; the gluewater layer is used instead of a double-faced scotch tape, thereby reducing the production cost of the film switch; the structure is simple, the production is easy, and the performance is reliable.
Description
Technical field
The utility model relates to a kind of electrical equipment press-key structure, more particularly, relates to a kind of electrical equipment button thin film switch.
Background technology
Thin film switch is a kind of construction of switch commonly used, extensively apply on the press-key structure of electrical equipment, as mobile phone press-key construction, various electrical equipment control press-key structure, electric appliance remote controller press-key structure etc., its operation principle is transmitted on the thin film switch for the conductive pole by button, metal clips on the thin film switch moves downward under pressure to contact with pad on the mainboard and forms conducting, realizes electrical function.Thin film switch structure requires to have good sealing, dustproof and exhaust performance, and its structure directly determines the availability and the reliability of electrical equipment.
With the mobile phone is example, and existing button thin film switch structure comprises two kinds of exhaust cellular type and exhaust slot types.Exhaust cellular type thin film switch is for directly being provided with steam vent, PET bottom band double faced adhesive tape, metal clad shell fragment near the metal clips position on single-layer PET (Polythylene Terephthalate polyphenyl dioctyl phthalate glycol ester) film.
Exhaust cellular type thin film switch structure is simple, and cost is lower, and still, because steam vent exposes, dust, impurity, foreign matter etc. are easy to enter the metal clips bottom and cause dirtyly in the use, directly influence the conduction property of switch.
Exhaust slot type thin film switch has solved the above-mentioned defective of exhaust cellular type thin film switch.Exhaust slot type thin film switch is two-layer PET membrane structure, and the design metal clips is stepped down and air discharge duct on bottom PET film, fits by double faced adhesive tape between the two-layer PET film, and metal clips is attached to PET bottom, upper strata, and bottom PET film bottom has double faced adhesive tape.
Though exhaust slot type thin film switch has solved the exhausting problem and the dustproof problem of thin film switch well, because it has used two-layer PET film and two-layer double faced adhesive tape, cost is higher, and thickness increases.
Summary of the invention
The technical problems to be solved in the utility model is, a kind of electrical equipment button thin film switch is provided, and guarantees good sealing, dustproof and exhaust performance, has the low advantage of production cost simultaneously.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of electrical equipment button thin film switch, comprise PET film 2, be arranged on the adhered layer of this PET film lower surface and stick on metal clips 4 on this PET film lower surface by this adhered layer, it is characterized in that, described adhered layer is a glue layer 3, this glue layer comprises that in the distribution of described PET film lower surface the gum district that is coated with glue and the position of keeping away of no glue distinguish, described gum district comprises peripheral gum district and corresponding to the point-like gum district of described metal clips, the described position district of keeping away comprises around the ring-type of described point-like cloth Jiao Qu and keeps away the position district and be connected this ring-type and keep away the connection in position district and keep away the position district, described ring-type is kept away the position district and is kept away the position district by described connection and keep away the position district with another described ring-type at least and be connected, and described peripheral gum district is positioned at a described periphery of keeping away the position district.
In electrical equipment button thin film switch described in the utility model, the described ring-type that is interconnected is kept away to connect successively in twos between the district of position and is communicated with and separates from beginning to end.
In electrical equipment button thin film switch described in the utility model, the described ring-type that is interconnected is kept away series connection and connection successively in the form of a ring in twos between the district of position.
In electrical equipment button thin film switch described in the utility model, comprise button 9 and conductive pole 10, this conductive pole be positioned at described PET film corresponding to directly over the described metal clips installation site, this button is positioned at the top of this conductive pole.
In electrical equipment button thin film switch described in the utility model, comprise the button and the conductive pole that are set to one, described conductive pole be arranged on described button under, described button that is set to one and conductive pole be positioned at described PET film corresponding to directly over the described metal clips installation site and contiguous this PET film of conductive pole one side is set.
Implement electrical equipment button thin film switch of the present utility model, compared with the prior art, its beneficial effect is:
1, in PET film bottom glue layer is set dexterously, constitute the closed pattern that is communicated with, by paste metal clips and with the PET film applying on electrical structure, utilize the thickness of glue layer, form sealing, the switch air chamber that is communicated with, the shape of each switch air chamber makes its corresponding PET film have certain upwards deformation range and obtains bigger gas chamber volume, when pushing a thin film switch, air in this switch air chamber is squeezed and flow in other air chamber that is communicated with this air chamber, make each thin film switch have good closure, dust tightness and venting quality, thus thin film switch good usability and reliability guaranteed;
2, utilize glue layer to substitute double-sided adhesive, reduced the production cost of thin film switch;
3, simple in structure, easy manufacturing, dependable performance.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the floor map of a kind of embodiment of the utility model electrical equipment button thin film switch.
Fig. 2 is the cross-sectional view of the utility model electrical equipment button thin film switch.
Fig. 3 is the glue film schematic diagram of the utility model electrical equipment button thin film switch.
Fig. 4 is the operation principle schematic diagram of the utility model electrical equipment button thin film switch.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3 be the utilization embodiment of the utility model electrical equipment button thin film switch on mobile phone.The utility model electrical equipment button thin film switch 1 comprises PET film 2, be arranged on the glue layer 3 of these PET film 2 lower surfaces and stick on metal clips 4 on PET film 2 lower surfaces by glue layer 3.Glue layer 3 comprises that in the distribution of PET film 2 lower surfaces the gum district 7 that is coated with glue and the position of keeping away of no glue distinguish 8, gum district 7 comprises peripheral gum district and corresponding to the point-like gum district of pasting metal clips 4, keeps away position district 8 and comprises around the ring-type of point-like cloth Jiao Qu and keep away the position district and is connected ring-type and keeps away the connection in position district and keep away the position and distinguish.Ring-type is kept away the position district and is kept away the position district by connection and keep away the position district with another ring-type at least and be connected, and peripheral gum district is positioned at ring-type and keeps away the position district and is connected and keep away the periphery that the position is distinguished.
The coating of glue layer 3 can adopt mode of printing to realize: at first make the glue film 6, design and printing zone and keep away the zone, position as required on the film 6, by the film 6 glue is printed onto the lower surface of PET film 2, printing zone forms gum district 7, keeps away the zone, position and forms and keep away position district 8.
As shown in Figure 2, with metal clips 4 stick on finish printing glue layer 3 PET film 2 corresponding to the point-like gum zone position that metal clips 4 is installed, the lower surface with thin film switch 1 sticks on the release film 5 then, so that use when mobile phone is installed.During installation release film 5 is removed, thin film switch 1 is sticked on the mobile phone corresponding circuits plate with glue layer 3 one sides.
As Fig. 2, shown in Figure 3, a ring-type of thin film switch 1 is kept away position district and is kept away the position district with another ring-type at least and be connected.Like this, when thin film switch of pressing operation, the air in its metal clips will be kept away a ring-type of distinguishing other thin film switch that flow to connection along connection and keep away in the district of position.Because the position that PET film 2 is kept away the position district corresponding to ring-type can be out of shape the volume that the change ring-type is kept away the position district up and down, therefore, ring-type is kept away the mobile air of coming of thin film switch that the position district can hold the operation that is pressed, thereby guarantee the good venting quality of thin film switch, and good seal, improve the dust tightness of thin film switch, guaranteed the thin film switch reliable operation.
In the present embodiment, the ring-type that is interconnected is kept away series connection connection successively in twos between the district of position, and is not communicated with from beginning to end, is separated from each other.
In other embodiments, the ring-type that is interconnected is kept away series connection and connection successively in the form of a ring in twos between the district of position.Like this, can guarantee that air flows is more unimpeded.
As shown in Figure 4, in other embodiments,, button 9 and conductive pole 10 are set in order to improve the comfortableness of operation, conductive pole 10 be installed in PET film 2 corresponding to directly over metal clips 4 installation sites, button 9 is installed in the top of conductive pole 10.
In other embodiments, button 9 and conductive pole 10 are set to one, conductive pole 10 be arranged on button 9 under, be installed in the PET film corresponding to directly over metal clips 4 installation sites and contiguous this PET film 2 of conductive pole 10 1 sides is set with being set to the button 9 of one and conductive pole 10.
During use, finger presses button 9, pressing force passes on the thin film switch 1 by conductive pole 10.Metal clips 4 on the thin film switch 1 produces self-deformation under pressure, moves downward to contact with pad 11 on the mainboard to form conducting, thereby realizes the button input function.
The utility model electrical equipment button thin film switch can be used on the constructions of switch such as mobile phone press-key construction, various electrical equipment control press-key structure, electric appliance remote controller press-key structure.
Claims (5)
1, a kind of electrical equipment button thin film switch, comprise PET film (2), be arranged on the adhered layer of this PET film lower surface and stick on metal clips (4) on this PET film lower surface by this adhered layer, it is characterized in that, described adhered layer is glue layer (3), this glue layer comprises that in the distribution of described PET film lower surface the gum district that is coated with glue and the position of keeping away of no glue distinguish, described gum district comprises peripheral gum district and corresponding to the point-like gum district of described metal clips, the described position district of keeping away comprises around the ring-type of described point-like cloth Jiao Qu and keeps away the position district and be connected this ring-type and keep away the connection in position district and keep away the position district, described ring-type is kept away the position district and is kept away the position district by described connection and keep away the position district with another described ring-type at least and be connected, and described peripheral gum district is positioned at a described periphery of keeping away the position district.
2, electrical equipment button thin film switch as claimed in claim 1 is characterized in that, the described ring-type that is interconnected is kept away to connect successively in twos between the district of position and is communicated with and separates from beginning to end.
3, electrical equipment button thin film switch as claimed in claim 1 is characterized in that, the described ring-type that is interconnected is kept away series connection and connection successively in the form of a ring in twos between the district of position.
4, as the described electrical equipment button of one of claim 1 to 3 thin film switch, it is characterized in that, comprise button (9) and conductive pole (10), this conductive pole be positioned at described PET film corresponding to directly over the described metal clips installation site, this button is positioned at the top of this conductive pole.
5, as the described electrical equipment button of one of claim 1 to 3 thin film switch, it is characterized in that, comprise the button and the conductive pole that are set to one, described conductive pole be arranged on described button under, described button that is set to one and conductive pole be positioned at described PET film corresponding to directly over the described metal clips installation site and contiguous this PET film of conductive pole one side is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200923399U CN201167051Y (en) | 2008-02-26 | 2008-02-26 | Key-press film switch for an electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200923399U CN201167051Y (en) | 2008-02-26 | 2008-02-26 | Key-press film switch for an electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201167051Y true CN201167051Y (en) | 2008-12-17 |
Family
ID=40192442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200923399U Expired - Fee Related CN201167051Y (en) | 2008-02-26 | 2008-02-26 | Key-press film switch for an electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201167051Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531388A (en) * | 2013-10-23 | 2014-01-22 | 青岛歌尔声学科技有限公司 | FPC (flexible printed circuit) key device provided with multiple dome sheets |
| CN105632821A (en) * | 2016-03-29 | 2016-06-01 | 江海波 | Soft plastic and hard sheet integrated injection-molded keyboard, keycap and production method |
| CN109767945A (en) * | 2019-01-18 | 2019-05-17 | 上海欧力雅实业有限公司 | A kind of thin film switch and its processing technology |
| CN113252849A (en) * | 2021-05-13 | 2021-08-13 | 河南中煤电气有限公司 | Method for solving zero return and adjusting TRIZ of panel of methane detection alarm |
-
2008
- 2008-02-26 CN CNU2008200923399U patent/CN201167051Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531388A (en) * | 2013-10-23 | 2014-01-22 | 青岛歌尔声学科技有限公司 | FPC (flexible printed circuit) key device provided with multiple dome sheets |
| CN105632821A (en) * | 2016-03-29 | 2016-06-01 | 江海波 | Soft plastic and hard sheet integrated injection-molded keyboard, keycap and production method |
| CN109767945A (en) * | 2019-01-18 | 2019-05-17 | 上海欧力雅实业有限公司 | A kind of thin film switch and its processing technology |
| CN113252849A (en) * | 2021-05-13 | 2021-08-13 | 河南中煤电气有限公司 | Method for solving zero return and adjusting TRIZ of panel of methane detection alarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20140226 |