CN100524566C - Key switching structure - Google Patents
Key switching structure Download PDFInfo
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- CN100524566C CN100524566C CNB2005100845653A CN200510084565A CN100524566C CN 100524566 C CN100524566 C CN 100524566C CN B2005100845653 A CNB2005100845653 A CN B2005100845653A CN 200510084565 A CN200510084565 A CN 200510084565A CN 100524566 C CN100524566 C CN 100524566C
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Abstract
The present invention provides a key switch structure which assures key input even if an edge of a key top is pressed. Projections 12 and 13 are formed in an edge of a key top 2 and contact parts 14 and 15 are prepared in positions opposed to the projections 12 and 13, respectively. A contact part 8 is formed at the center of a membrane sheet 6. The contact parts 14, 15 and the contact part 8 are connected one another at a pattern part so that key input is performed even when either of them is pressed. When an edge of the key top 2 is pressed, a contact part 14 or 15 is closed by a projection 12 or 13.
Description
Technical field
The present invention relates to used slim key switching structure in the personal computer etc. of the structure of key switch used in the key board unit, particularly notebook type.
Background technology
In the past, in being used to the key switch of key board unit, known had by means of a pair of linkage part being seen in the side being the X shape has carried out the link mechanism that disposes, and supports the key switch of key head up and down movably.Can list as an example for example at the key switch disclosed in the flat 11-339587 communique of Japan Patent Publication Laid-Open.
Example shown in the above-mentioned communique has only used a link mechanism, but in large-scale button, has developed the button that link mechanism is set at two places.Be described with accompanying drawing below.
Fig. 7 is a side view of representing key switching structure in the past.In Fig. 7, key switch 1 in the past has key head 2, cup-shaped rubber 3, a pair of link mechanism 4,5, diaphragm 6 and stiffener 7.Link mechanism 4 is linkage part 4a, the 4b that the X shape can joltily form by seeing in the side by means of fulcrum 4c, and the support 4f that is formed on following support 4d, the 4e of key head 2 and is formed on diaphragm 6 sides constitutes.
Another link mechanism 5 is linkage part 5a, the 5b that the X shape can joltily form by seeing in the side by means of fulcrum 5c similarly, is formed on following support 5d, the 5e of key head 2, and the support 5f that is formed on diaphragm 6 sides constitutes.By key head 2 is depressed from the top, cup-shaped rubber 3 is buckled, and the contact portion 8 that is formed under the cup-shaped rubber 3 is able to closure.
Fig. 8 is the exploded view of expression diaphragm.In Fig. 8, diaphragm 6 is made up of the thin slice of upper sheet 6a, lower plate 6b and this three PET (PETG) system of distance piece 6c, has the formation that clips distance piece 6c between upper sheet 6a and lower plate 6b.On the upper sheet 6a face relative, disposing drafting department 9a and the contact 8a that utilizes silver-colored printing ink (Ag printing ink), on the lower plate 6b face relative, disposing drafting department 9b and the contact 8b that utilizes silver-colored printing ink in addition equally with distance piece 6c with distance piece 6c.
Contact 8a and contact 8b on distance piece 6c, be formed with spacer holes 8c so that can be in contact with one another.By diameter and the thickness of at random setting spacer holes 8c, just can at random obtain contact action load.In addition, the position of key head 2 is represented with double dot dash line in Fig. 8.
Then, just action describes.In Fig. 7, Fig. 8, descend because of moving of link mechanism 4,5 if depress 2 key heads 2 of key head from the top.With key head 2 mutually in succession cup-shaped rubber 3 follow in this and be crushed, be arranged at the contact 8a that inner projection 3a just depresses the upper sheet 6a of diaphragm 6.The contact 8a that is depressed contacts with the contact 8b of lower plate 6b, just becomes electric on-state thus.
If remove applied force on key head 2, then by means of the recuperability of cup-shaped rubber 3, the projection 3a that depresses the contact 8a of upper sheet 6a just turns back to original position, and key head 2 also turns back to original position.Follow in the contact 8a of this upper sheet 6a and separate, and become the state of electric cut-out with the contact 8b of lower plate 6b.
In recent years, along with popularizing of notebook personal computer always just has strong request at the slimming of keyboard.The slimming of keyboard is accompanied by the slimming of the parts that constitute keyboard.If constitute parts by the slimming intensity of parts then, for example the intensity of key head or link mechanism will reduce.The tendency that key stroke when also existence is depressed in addition also shortens.Under the situation that the end of key head is pressed when carrying out the button input, if the intensity of key head is weak or exist because of connection tolerance limit that short stroke caused (from the conducting starting position that utilizes the contact portion that key depresses to the distance of the final depressing position of key) deficiency, the power of depressing that just has the contact portion conducting of the downside that only makes cup-shaped rubber then can not pass to the situation of cup-shaped rubber.In the case, if the pressing key head will take place not firmly or if not push the problem that the central authorities of key head just can not carry out the button input.
Summary of the invention
In order to solve above-mentioned problem, technical scheme of the present invention provides a kind of key switching structure, by depressing the closed contact that is formed on the diaphragm of forming by upper sheet and lower plate of key head, it is characterized in that, the a plurality of contact of formation portion on the diaphragm below the above-mentioned key head, above-mentioned a plurality of contact portion is connected with each other with drafting department respectively in above-mentioned upper sheet and above-mentioned lower plate, and be connected to above-mentioned contact, jut be set respectively in the position of the above-mentioned key head relative with above-mentioned a plurality of contact portion.
According to the present invention of above-mentioned formation, just obtain following effect: even under the situation about being depressed in the end of key head, so owing to also can carry out the button input reliably with the some relative contact portion of a plurality of juts is closed.
Description of drawings
Fig. 1 is the side view of the key switch of expression the 1st execution mode.
Fig. 2 is the exploded view of the diaphragm of expression the 1st execution mode.
Fig. 3 is the side view of depressing action in expression the 1st execution mode.
Fig. 4 is the side view of wanting portion of expression the 2nd execution mode.
Fig. 5 is the side view of the key switch of expression the 3rd execution mode.
Fig. 6 is the side view of depressing action in expression the 3rd execution mode.
Fig. 7 is a side view of representing key switching structure in the past.
Fig. 8 is the exploded view of expression diaphragm.
Embodiment
Below, be used to implement mode of the present invention according to accompanying drawing explanation.Fig. 1 is the side view of the key switch of expression the 1st execution mode of the present invention.In Fig. 1, the key switch 11 of the 1st execution mode possesses: key head 2, and cup-shaped rubber 3, a pair of link mechanism 4,5, diaphragm 6 and reinforcement pull 7.Link mechanism 4 is linkage part 4a, the 4b that the X shape can joltily form by seeing in the side by means of fulcrum 4c, is formed on following support 4d, the 4e of key head 2, and the support 4f that is formed on diaphragm 6 sides constitutes.Linkage part 4a and linkage part 4b have the shaped as frame shape of rectangle respectively, form the spatial portion of circular at central portion with the state that combines with fulcrum 4c.
Another link mechanism 5 is linkage part 5a, the 5b that the X shape can joltily form by seeing in the side by means of fulcrum 5c too, is formed on following support 5d, the 5e of key head 2, and the support 5f that is formed on diaphragm 6 sides constitutes.Linkage part 5a and linkage part 5b have the shaped as frame shape of rectangle respectively, form the spatial portion of circular at central portion with the state that combines with fulcrum 5c.By key head 2 is depressed from the top, cup-shaped rubber 3 is buckled, and the contact portion 8 that is formed under the cup-shaped rubber 3 is able to closure
Below key head 2, be formed with towards below the jut 12,13 that stretches out.The above-mentioned spatial portion that jut 12,13 enters link mechanism 4,5 respectively forms like this.Diaphragm 6 below jut 12 is formed with contact portion 14 on the position relative with jut 12, is formed with contact portion 15 in addition on the position relative with jut 13.
Fig. 2 is the exploded view of the diaphragm of expression the 1st execution mode.In Fig. 2, diaphragm 6 is made up of upper sheet 6a, lower plate 6b and these three PET system thin slices of distance piece 6c, has the formation that clips distance piece 6c between upper sheet 6a and lower plate 6b.On the upper sheet 6a face relative, be formed with the drafting department 16a that utilizes the conductive ink as silver-colored printing ink, on drafting department 16a, be formed with 3 contact 8a, 14a, 15a with distance piece 6c.3 contact 8a, 14a, 15a are connected with each other by drafting department 16a.In addition, the location overlap of key head 2 is represented with double dot dash line in upper sheet 6a.
On the lower plate 6b face relative, dispose the drafting department 16b that utilizes silver-colored printing ink and 3 contact 8b, 14b, 15b equally with distance piece 6c.3 contact 8b, 14b, 15b are connected with each other by means of drafting department 16b.In addition, on distance piece 6c, be formed with 3 spacer holes 8c, 14c, 15c.
The contact 8a of upper sheet 6a can contact via spacer holes 8c with the contact 8b of lower plate 6b, constitutes contact portion 8 with them.The contact 14a of upper sheet 6a can contact via spacer holes 14c with the contact 14b of lower plate 6b, constitutes contact portion 14 with them.The contact 15a of upper sheet 6a can contact via spacer holes 15c with the contact 15b of lower plate 6b, constitutes contact portion 15 with them.By diameter and the thickness of at random setting spacer holes 8c, 14c, 15c, just can at random obtain contact action load.
Then, further use Fig. 3 that action is described.Fig. 3 is the side view of depressing action in expression the 1st execution mode.The action that here end at key head has been applied when depressing power describes in addition.In Fig. 1, if the end of key head 2 from above apply and depress power F, key head 2 descends with the state towards left side as shown in Figure 3 because of moving of link mechanism 4,5.With key head 2 mutually in succession cup-shaped rubber 3 follow in this and be crushed.Upper sheet 6a with contact portion 14 after the jut 12 of link mechanism 4 sides descends in addition depresses.
Depress by the upper sheet 6a with contact portion 14, the contact 14a of upper sheet 6a contacts with the contact 14b of lower plate 6b, and the drafting department 16b of the drafting department 16a of upper sheet 6a and lower plate 6b just becomes conducting state in view of the above.At this moment, even not conducting of contact portion 8 also becomes the state identical with contact portion 8 conducting.
If remove applied force F on the key head 2, then by means of the recuperability of cup-shaped rubber 3, key head 2 turns back to original position.Follow in this, the jut 12 of depressing contact portion 14 rises, and the contact 14a of upper sheet 6a separates with the contact 14b of lower plate 6b, thereby becomes the state of electric cut-out.
Applied under the situation of depressing power F in end (right-hand end among Fig. 1), depressed contact portion 15 by jut 13 and obtain the electrically conducting state the opposition side of key head 2.No matter promptly which end, the left and right sides is depressed and can both obtains the electrically conducting state.
As described above, according to the 1st execution mode, owing to a plurality of contact portion 14,15 is set on diaphragm 6, is provided with jut 12,13 in the position of the key head relative 2, so even just the effect that also obtains the button input state under the situation about being depressed in the end of key head 2 is reliably arranged with it.
Then, describe with regard to the 2nd execution mode.Fig. 4 is the side view of wanting portion of expression the 2nd execution mode.The 2nd execution mode becomes the height setting of jut the value of regulation.In the 2nd execution mode, make the depression stroke on the both ends of key switch set also long more somely than the depression stroke on the central portion of key switch.
The state that Fig. 4 (a) expression key head 2 is not depressed as yet, state that Fig. 4 (b) expression key head 2 is not depressed and central portion have been depressed into the state in deep.In Fig. 4, make the height of jut 12, promptly from diaphragm 6 to jut the distance L 1 of 12 leading section 12a be depressed into more than or equal to the central portion of the key head 2 of the state that is not depressed and key head 2 deep state key head 2 distance L 2, be that stroke on the central portion of key head 2 is set.L1 〉=L2 just.
But the distance L 1 of 12 leading section 12a is set shortlyer than the stroke on the end of key head 2 from diaphragm 6 to jut.Thereby under the situation about being depressed in the end of jut 12 sides of key head 2, before becoming the state that key head 2 is depressed into deep, illustrated contact portion 14 can both hold tolerance limit and carry out conducting in above-mentioned the 1st execution mode.Height about the jut 13 of opposition side is set too.
By as described above will be from diaphragm 6 to jut 12 distance L 1 be set at more than or equal to the stroke on the central portion of key head 2, even under the situation of the end of depressing key head 2, also can obtain sufficient path increment, just can obtain and depress the equal stroke sense of situation of the central portion of key head 2 thus.
Then, describe with regard to the 3rd execution mode of the present invention.Fig. 5 is the side view of the key switch of the 3rd execution mode.The key switch 21 of the 3rd execution mode is provided with elastomer respectively being arranged in a plurality of contact portion of diaphragm 6.
In Fig. 5, be provided with elastomer 22 on the top of the contact portion 14 of diaphragm 6.Elastomer 22 is configured to cover contact portion 14, and bonds on the diaphragm 6.Formed jut 23 on key head 2, the corresponding shortening of height of pressing elastomer 22.On the top of the contact portion 15 of opposition side, elastomer 24 also is configured to cover contact portion 15.Then, the jut 25 by the corresponding shortening of height of elastomer 24 is formed on the key head 2.Other formation is identical with the 1st execution mode.In addition, a part of cutting away link mechanism 4,5 in Fig. 5 is represented.
Then, further use Fig. 6 that the action of the 3rd execution mode is described.Fig. 6 is the side view of depressing action in expression the 3rd execution mode.Action when the end of key head 2 also is depressed in the case is described.In Fig. 5, if the end of key head 2 from above apply and depress power F, then key head 2 descends with the state towards left side because of the moving as shown in Figure 6 of link mechanism 4,5.With key head 2 mutually in succession cup-shaped rubber 3 follow in this and be crushed.The jut 23 of link mechanism 4 sides descends to flatten elastomer 22 in addition.
Be crushed by elastomer 22, the upper sheet 6a of contact portion 14 is depressed.In view of the above, the contact 14a of upper sheet 6a contacts with the contact 14b of lower plate 6b, and the drafting department 16b of the drafting department 16a of upper sheet 6a and lower plate 6b just becomes conducting state in view of the above.At this moment, even not conducting of contact portion 8 also becomes the state same with contact portion 8 conducting.
If remove applied force F on the key head 2, then by means of the recuperability of cup-shaped rubber 3 and elastomer 22,24, key head 2 turns back to original position.Follow in the jut 23 of this direct draught contact portion 14 and rise, contact portion 14 just becomes the state of electric cut-out.
As described above in the 3rd execution mode, except the effect that the 1st execution mode has, owing to be provided with elastomer 22,24, so also have the effect that the top that can prevent these contact portions 14,15 sustains damage because of depressing of jut on the top of contact portion 14,15.
Though in above-mentioned the 3rd execution mode, elastomer 22,24 is bonded on the diaphragm 6, be not limited to this, for example, can in the spatial portion of the central authorities of link mechanism 4,5, not be configured bonding elastomer yet.In the case, wish elastomer to be made as the shape that the shape with the spatial portion of the central authorities of link mechanism 4,5 matches and not to be configured to dislocation.
In addition, though the example that contact portion and the jut relative with it is being set having on key switch of link mechanism has been described in the respective embodiments described above, the present invention is not limited to this, also applicable to the key switch that does not have link mechanism.
The present invention is not limited to employed key switch in the notebook personal computer in addition, also applicable to the switch of various input units.
Claims (1)
1. a key switching structure by depressing the closed contact that is formed on the diaphragm of being made up of upper sheet and lower plate of key head, is characterized in that,
Form a plurality of contact portion on the diaphragm below the above-mentioned key head, above-mentioned a plurality of contact portion is connected with each other with drafting department respectively in above-mentioned upper sheet and above-mentioned lower plate, is connected to above-mentioned contact simultaneously,
Position at the above-mentioned key head relative with above-mentioned a plurality of contact portion is being provided with jut respectively,
Path increment when the distance of above-mentioned jut and above-mentioned diaphragm is configured to be depressed more than or equal to the central authorities at above-mentioned key head.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004218716 | 2004-07-27 | ||
| JP2004218716A JP4419741B2 (en) | 2004-07-27 | 2004-07-27 | Key switch structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1728311A CN1728311A (en) | 2006-02-01 |
| CN100524566C true CN100524566C (en) | 2009-08-05 |
Family
ID=35905470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100845653A Expired - Fee Related CN100524566C (en) | 2004-07-27 | 2005-07-27 | Key switching structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4419741B2 (en) |
| CN (1) | CN100524566C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5125449B2 (en) * | 2007-11-28 | 2013-01-23 | 沖電気工業株式会社 | Key switch structure |
| JP5304480B2 (en) * | 2009-06-26 | 2013-10-02 | 沖電気工業株式会社 | Key switch structure |
| JP5760670B2 (en) * | 2011-05-13 | 2015-08-12 | 沖電気工業株式会社 | Key switch structure |
| JP5724747B2 (en) * | 2011-08-17 | 2015-05-27 | 沖電気工業株式会社 | Key switch structure |
| JP5453383B2 (en) * | 2011-12-12 | 2014-03-26 | レノボ・シンガポール・プライベート・リミテッド | Key switch device |
| TWI492256B (en) * | 2013-09-26 | 2015-07-11 | Darfon Electronics Corp | Keyswitch structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2373881Y (en) * | 1998-10-16 | 2000-04-12 | 群光电子股份有限公司 | Push-botton signal activator |
-
2004
- 2004-07-27 JP JP2004218716A patent/JP4419741B2/en active Active
-
2005
- 2005-07-27 CN CNB2005100845653A patent/CN100524566C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2373881Y (en) * | 1998-10-16 | 2000-04-12 | 群光电子股份有限公司 | Push-botton signal activator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4419741B2 (en) | 2010-02-24 |
| JP2006040699A (en) | 2006-02-09 |
| CN1728311A (en) | 2006-02-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090805 Termination date: 20170727 |