CN100461317C - Contact point structure - Google Patents
Contact point structure Download PDFInfo
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- CN100461317C CN100461317C CNB2005101140490A CN200510114049A CN100461317C CN 100461317 C CN100461317 C CN 100461317C CN B2005101140490 A CNB2005101140490 A CN B2005101140490A CN 200510114049 A CN200510114049 A CN 200510114049A CN 100461317 C CN100461317 C CN 100461317C
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Abstract
The present invention provides a contact structure not generating migration even when used in an atmosphere of high humidity. The contact structure has a printed first pattern 2 composed of a positive electrode; a second pattern 3 formed outside the first pattern, composed of a negative electrode insulated from the first pattern 2; and a movable contact 6, of which the central part covers the first pattern 2 and an outer peripheral part is made conductive with the second pattern 3. The central part of the movable contact 6 is formed into a dome-shaped cavity, and an upper part thereof is covered with a film sheet 12. An air storing part 10 for storing air exhausted from the dome-shaped cavity when the movable contact 6 is pressed is covered with the film sheet 12.
Description
Technical field
The present invention is about contact structure, even particularly also can prevent to produce the contact structure that moves (migration) about using under the surrounding environment of high humility.
Background technology
With the content of being put down in writing in the patent documentation 1 as shown in Figure 3 in the past contact structure is described, on film 21, waits by printing that to be formed with two holding wires predetermined thickness, that formed by silver-colored pattern be anode 22 and negative electrode 23.
Such contact structure is in use because of airborne humidity, and the silver-colored electrolysis of anode 22 becomes silver ion, and this silver ion is to negative electrode 23 migrations.
Thus, anode 22 loses electric charge and is grown to dendriform crystallization (branch) shape, the phenomenon of generation and negative electrode 23 short circuits, thus on circuit, produce various unfavorable conditions.
As its countermeasure, contact structure in the past is after printing formation anode 22 and negative electrode 23, only prints carbon 24 in anode 22 sides, thereby prevents from moving that anode 22 sides produce.
Patent documentation 1: Japanese kokai publication hei 09-289361 communique
But, the carbon 24 of contact structure in the past, influence because of carbon particle when printing forms produces trickle pin hole (ピ Application ホ-Le), under situation about using under the environment of high humility, have moisture and invade from pin hole, because of this humidity from anode-side produce to move, with the possibility of negative electrode 23 short circuits.
Summary of the invention
The objective of the invention is to solve above-mentioned problem, a kind of contact structure is provided,, also do not produce mobile even under the environment of high humility, use.
As the 1st scheme that is used to solve above-mentioned problem, contact structure of the present invention is characterized in that, has: first pattern, and printed formation also is made of anode; Second pattern in the outside of this first pattern, is made of the negative electrode with above-mentioned first pattern insulation; And moving contact, central portion covers above above-mentioned first pattern, and peripheral part and the above-mentioned second pattern conducting; The central portion of above-mentioned moving contact becomes dome-type cavity, the top of above-mentioned moving contact covers with thin-film sheet, airtight and form the air reservoir with thin-film sheet near the outside of above-mentioned second pattern, this air reservoir is used to store the air of discharging from above-mentioned dome-shaped cavity when the above-mentioned moving contact of pressing operation, be formed with first wall portion in the outside around above-mentioned second pattern, extend above-mentioned first wall portion laterally from above-mentioned first wall portion and form stream with predetermined gap, the mutual opposed second wall portion, in the above-mentioned second wall portion, link inner the 3rd wall portion of formation with above-mentioned air reservoir.
And the 2nd scheme as being used to solve above-mentioned problem is characterized in that, above-mentioned first, second pattern is formed by silver-colored pattern, covers with anti-moving film (migrationresistance coat) to above-mentioned first pattern of major general.
And the 3rd scheme as being used to solve above-mentioned problem is characterized in that, only forms above-mentioned first pattern with anti-moving film, forms above-mentioned second pattern with silver-colored pattern.
And the 4th scheme as being used to solve above-mentioned problem is characterized in that, above-mentioned anti-moving film will be printed the printing ink of gold-plated nickel particles combination with adhesive and form.
And, as the 5th scheme that is used to solve above-mentioned problem, it is characterized in that, above-mentioned first, second, third wall portion forms thickness and covers with above-mentioned thin-film sheet than the thick above-mentioned first, second, third wall portion top of above-mentioned first, second pattern that comprises anti-moving film, and above-mentioned first wall portion inside and above-mentioned stream and above-mentioned air reservoir are interdicted with outside with above-mentioned thin-film sheet.
The invention effect
The moving contact of contact structure of the present invention, central portion becomes dome-type cavity, top covers with thin-film sheet, near the outside of second pattern, cover and form the air reservoir with thin-film sheet, this air reservoir device is used to store the air of discharging from above-mentioned dome-shaped cavity when the above-mentioned moving contact of pressing operation, the therefore influence that changes of moving contact inside that covers with thin-film sheet and the air between the air reservoir humidity that is not subjected to extraneous air.
Therefore, between moving contact inside that covers with thin-film sheet and air reservoir, inject the air of low humidity, can reduce from first pattern generating thus and move.
And, because first, second pattern forms by silver-colored pattern, cover with anti-moving film to above-mentioned first pattern of major general, therefore, can provide to prevent to produce mobile, high performance contact structure.
And, owing to only form first pattern, form above-mentioned second pattern with silver-colored pattern with anti-moving film, therefore, can cut down the use amount of silver slurry.
And, form, therefore, can prevent the generation of drifting about reliably because anti-moving film will print the printing ink of gold-plated nickel particles combination with adhesive.
And, because it is thicker than above-mentioned first, second pattern that comprises above-mentioned anti-moving film that first, second, third wall portion is formed thickness, cover first, second, third wall portion top with thin-film sheet, first wall portion inside, stream and air reservoir, by above-mentioned film and outside blocking, therefore, by in first wall portion inside, stream and air reservoir, injecting the air of low humidity, even on anti-moving film, pin hole etc. is arranged, also can prevent the generation of drifting about fully.
Description of drawings
Fig. 1 is the vertical view of explanation contact structure of the present invention,
Fig. 2 be Fig. 1 along 2-2 sectional views,
Fig. 3 is the sectional view that the major part of contact structure in the past is described.
Embodiment
Below, with reference to the accompanying drawings, an execution mode of contact structure of the present invention is described with Fig. 1, Fig. 2.Fig. 1 is the vertical view of explanation contact structure of the present invention, and Fig. 2 is 2-2 sectional views of Fig. 1.
At first, contact structure of the present invention is equipped with flexible film substrate 1 at foot with predetermined thickness, this above film substrate 1 by print waiting first pattern 2 that is formed with the circle that the silver-colored pattern by circle forms.
Be formed with first pattern 2 at the outer circumferential side of this first pattern 2 and have second pattern 3 predetermined gap, insulated, this second pattern 3 forms by printing the silver-colored pattern that waits by ring-type.
In the present invention, first pattern 2 as anode, is illustrated second pattern 3 as negative electrode.And, on first, second pattern 2,3, cover the anti-moving film 4,5 of first, second of first, second pattern 2,3 and form with preset thickness by printing etc.
Above-mentioned first, second anti-moving film 4,5 uses with adhesive and makes the printing ink of gold-plated nickel particles combination print formation, thereafter, makes it curing and has conductivity.And first, second anti-moving film 4,5 is being formed with predetermined gap each other, and by electric insulation.
As shown in Figure 1, draw from above-mentioned first pattern 2 and to be formed with first and to draw pattern 2a, first draw and form the first anti-moving film 4 on the pattern 2a and cover at this.
And second pattern 3 is drawn and is formed with second and draws pattern 3a, and is formed with first part of drawing pattern 2a and is cut with predetermined width dimensions, and the first first anti-moving film 4 and the second anti-moving film 5 of drawing on the pattern 2a electrically insulated.
And central portion becomes the peripheral part of the moving contact 6 in dome-shaped cavity, is positioned on second pattern 3 across the second anti-moving film 5.
Above-mentioned moving contact 6 is made of rubber-like leaf springs such as corrosion resistant plates, if the operator presses central portion, and strain and reversing then, dome-type top is by the first anti-moving film 4 and 2 conductings of first pattern.
Thus, first, second pattern 2,3 conducts by first, second anti-moving film 4,5, switches the switching circuit between first, second pattern 2,3.
And if remove the impost of pushing that is added on the moving contact 6, then moving contact 6 automatically reverts to dome-type initial condition by the elastic force of self.
Peripheral part is positioned in moving contact 6 on the above-mentioned second anti-moving film 5, on peripheral part, is formed with the portion of keeping out of the way (not shown), keep out of the way portion by this, moving contact 6 not with first first anti-moving film 4 conductings of drawing on the pattern 2a.
And the outside around second pattern 3 is formed with the roughly first wall portion 7 of ring-type that is shaped as, the outside in first wall portion 7 as shown in Figure 1, is formed with the second wall portion 9, this second wall portion 9 links with first wall portion 7 and extends to the lower side, and the stream 8 with predetermined gap is also opposed mutually.
The above-mentioned second wall portion 9 links the 3rd wall portion 11 that is formed with, and forms area than the big air reservoir 10 of first wall portion's 7 two-part areas in the 3rd wall portion 11 interior bonds.
And as shown in Figure 2, it is thicker than first, second pattern 2,3 of the anti-moving film 4,5 that comprises first, second that first, second, third wall portion 7,9,11 forms thickness.And, being equipped with the thin-film sheet 12 of predetermined thickness and area on the top of first, second, third wall portion 7,9,11, these thin-film sheet 12 usefulness bonding agents etc. are bonded in film substrate 1 and the first, second, third wall portion 7,9,11.
And as shown in Figure 2, moving contact 6 is bonded on the thin-film sheet 12, and the mobile of left and right directions is limited.
If the operation of the such contact structure of the present invention of explanation, at first, during thin-film sheet 12 on the operator presses moving contact 6, the top of moving contact 6 strains and dome-type inner face electrically conducts by the first anti-moving film 4 and first pattern 2.
Thus, first, second pattern 2,3 electrically conducts, and switches the switching circuit of 2,3 in first, second pattern and carries out desirable input.
And simultaneously, the inner air in cavity of moving contact 6 is discharged to air reservoir 10 by stream 8, and the thin-film sheet 12 on the air reservoir 10 expands a little.
Then, if remove pushing of moving contact 6, then moving contact 6 is because the elastic force of self automatically restores to the dome-shaped of initial condition, and first, second pattern 2,3 is electrically insulated, and the air that is discharged to air reservoir 10 flow into first wall portion 7 inside by stream 8.
Contact structure of the present invention like this, owing to be positioned at the air of first wall portion 7 inside, stream 8 and air reservoir 10, cover with extraneous air with thin-film sheet 12, therefore, even air outside humidity changes, can not be subjected to the influence that extraneous air humidity changes yet.
Therefore, in first wall portion 7 inside, stream 8 and air reservoir 10, inject the air of low humidity during by assembling, even on the first anti-moving film 4 that covers on first pattern 2, pin hole etc. is arranged, also can prevent to produce mobile from first pattern 2 that silver-colored pattern constitutes.
In addition, in the explanation of embodiments of the present invention, illustrated that both form anti-moving film at first, second pattern 2,3, but also can only form the first anti-moving film 4 in first pattern, 2 sides that constitute by anode.
And, illustrated that first, second anti-moving film 4,5 will be printed the printing ink of gold-plated nickel particles combination with adhesive and form, but also can be that carbon printing ink is printed the carbon film that forms.
In this case, even pin hole is arranged on the carbon film, because first wall portion 7 inside, stream 8 and air reservoir 10 usefulness thin-film sheets 12 cover and airtight, therefore, outside humidity can not invaded inside, can prevent the generation of drifting about.
And, in the explanation of embodiments of the present invention, with silver-colored pattern illustrated first, second pattern 2,3 both, but can on first pattern 2, not form silver-colored pattern yet and directly form by anti-moving film, only form second pattern 3 with silver-colored pattern.Such contact structure can be cut down the use amount of printing the silver slurry that forms silver-colored pattern.
Claims (5)
1. contact structure is characterized in that having: first pattern, and printed formation also is made of anode; Second pattern in the outside of this first pattern, is made of the negative electrode with above-mentioned first pattern insulation; And moving contact, its central portion covers above above-mentioned first pattern, and peripheral part and the above-mentioned second pattern conducting; The central portion of above-mentioned moving contact becomes dome-type cavity, the top of above-mentioned moving contact covers with thin-film sheet, near the outside of above-mentioned second pattern, cover with thin-film sheet and form the air reservoir, this air reservoir is used to store the air of discharging from above-mentioned dome-shaped cavity when the above-mentioned moving contact of pressing operation, be formed with first wall portion in the outside around above-mentioned second pattern, extend above-mentioned first wall portion laterally and be formed with stream and the opposed second wall portion mutually from above-mentioned first wall portion with predetermined gap, in the above-mentioned second wall portion, link inner the 3rd wall portion of formation with above-mentioned air reservoir.
2. contact structure as claimed in claim 1 is characterized in that, above-mentioned first, second pattern is formed by silver-colored pattern, covers with anti-moving film to above-mentioned first pattern of major general.
3. contact structure as claimed in claim 1 is characterized in that, only forms above-mentioned first pattern with anti-moving film, forms above-mentioned second pattern with silver-colored pattern.
4. as claim 2 or 3 described contact structures, it is characterized in that above-mentioned anti-moving film is the printing ink that makes gold-plated nickel particles combination with adhesive to be printed form.
5. contact structure as claimed in claim 1, it is characterized in that, it is thicker than above-mentioned first, second pattern that comprises anti-moving film that above-mentioned first, second, third wall portion forms thickness, above-mentioned first, second, third wall portion top covers with above-mentioned thin-film sheet, and above-mentioned first wall portion inside and above-mentioned stream and above-mentioned air reservoir are interdicted with outside with above-mentioned thin-film sheet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004303910A JP4317806B2 (en) | 2004-10-19 | 2004-10-19 | Contact structure |
| JP303910/2004 | 2004-10-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1763882A CN1763882A (en) | 2006-04-26 |
| CN100461317C true CN100461317C (en) | 2009-02-11 |
Family
ID=36538047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101140490A Expired - Fee Related CN100461317C (en) | 2004-10-19 | 2005-10-19 | Contact point structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4317806B2 (en) |
| CN (1) | CN100461317C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108198721A (en) * | 2018-01-23 | 2018-06-22 | 深圳市东强精密塑胶电子有限公司 | A kind of novel ultra-thin touch-switch |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5567470B2 (en) * | 2010-12-28 | 2014-08-06 | 株式会社東海理化電機製作所 | Switch device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105752U (en) * | 1991-11-13 | 1992-05-27 | 深圳宝利达电子有限公司 | Water-proof membrane switch |
| JPH09289361A (en) * | 1996-04-23 | 1997-11-04 | Mitsumi Electric Co Ltd | Circuit board |
| JP2001035305A (en) * | 1999-07-23 | 2001-02-09 | Japan Aviation Electronics Industry Ltd | Air escape structure of dome type switch |
| US6417467B1 (en) * | 1999-06-29 | 2002-07-09 | Takeo Yamagata | Sheet with movable contacts and sheet switch |
| CN1515013A (en) * | 2001-06-07 | 2004-07-21 | ��ʽ�����ٲ� | Metal dome sheet, its mfg. method, and metal dome system |
-
2004
- 2004-10-19 JP JP2004303910A patent/JP4317806B2/en not_active Expired - Fee Related
-
2005
- 2005-10-19 CN CNB2005101140490A patent/CN100461317C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105752U (en) * | 1991-11-13 | 1992-05-27 | 深圳宝利达电子有限公司 | Water-proof membrane switch |
| JPH09289361A (en) * | 1996-04-23 | 1997-11-04 | Mitsumi Electric Co Ltd | Circuit board |
| US6417467B1 (en) * | 1999-06-29 | 2002-07-09 | Takeo Yamagata | Sheet with movable contacts and sheet switch |
| JP2001035305A (en) * | 1999-07-23 | 2001-02-09 | Japan Aviation Electronics Industry Ltd | Air escape structure of dome type switch |
| CN1515013A (en) * | 2001-06-07 | 2004-07-21 | ��ʽ�����ٲ� | Metal dome sheet, its mfg. method, and metal dome system |
Non-Patent Citations (4)
| Title |
|---|
| 薄膜开关导电油墨及其应用(一). 吴松山.丝网印刷，第1期. 1996 |
| 薄膜开关导电油墨及其应用(一). 吴松山.丝网印刷，第1期. 1996 * |
| 薄膜开关技术. 吴松山.网印工业，第3期. 1997 |
| 薄膜开关技术. 吴松山.网印工业，第3期. 1997 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108198721A (en) * | 2018-01-23 | 2018-06-22 | 深圳市东强精密塑胶电子有限公司 | A kind of novel ultra-thin touch-switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4317806B2 (en) | 2009-08-19 |
| JP2006120329A (en) | 2006-05-11 |
| CN1763882A (en) | 2006-04-26 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20171019 |
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| CF01 | Termination of patent right due to non-payment of annual fee |