CN205210823U - Keyboard unit - Google Patents

Abstract

The utility model relates to a keyboard unit, utensil no. 1 go up casing and casing once, and this keyboard unit includes a key cap (key top), and it includes a basal surface and disposes one makes the moving part in this basal surface to it is internal to wear to locate this epitheca, and a soft elasticity component, encircle the concave part including an elasticity body and from the top that this elasticity body extends, wherein this elasticity body is replaced and is rebounded and to make the moving part to and this top ring concave part detains to hold and to make the moving part, makes this key cap go up the casing not with this in vertical upwards collision when rebounding.

Description

Key board unit

Technical field

The utility model is that one utilizes silica gel hemisphere (siliconerubberdome) with the key board unit of conducting two films, and noiseless key board unit is obtained to hold keycap in espespecially a kind of position of increasing of silica gel hemisphere that utilizes.

Background technology

The keyboard that general computing machine adopts all can send the sound when key tap, and so this sound often can cause a puzzlement liking quiet user; Again in a workplace, be still no lack of the people that still must use keyboard at lunch break, this sound just can cause other to need the puzzlement of the people had a rest.Refer to Fig. 1, demonstrate the section of structure of a keyboard 10, comprise a keycap 11, one card column 12 (also can be described as crater), one central boss 13, at two trips 14 of card column 12 inner equilibrium movement, left and right two sidepieces 15, two (i.e. stop sections, top 16, left and right, common specification height/thickness DP is 1.4mm), left and right two bottom 17, one conductive film (membrane) 171, one silica gel hemisphere (siliconerubberdome) 18 and two outside portions 19, the placed-depth ED of outside portion 19 below a keyboard face 101 of keyboard 10 is then 2mm, and be 0.8mm at the height H T of two surrounding portion 181 of the other silica gel hemisphere 18 of central boss 13.

As can be seen from Figure 1 existing keyboard 10 can cause the reason of the sound, usually nothing more than be when keycap 11 by toward press down time, sidepiece 15 clashes into one of top 16 to be supported surface 161 and trip 14 and clashes into the sounds that bottom 17 sends (certainly, if central boss 13 promotes silica gel hemisphere 18 and has struck conductive film 171, then trip 14 can needn't clash into bottom 17 again, the sound of bottom 17 is not just struck) yet, when being rebounded by a holding part 182 of rubberdome18 with the central boss 13 of keycap 11, the sound (stop surface 162 drops in order to prevent the disengaging of trip 14) that the stop surface 162 that trip 14 clashes into top 16 sends, that is use the sound sent during keyboard 10, all because keycap 11 is in bottom 17 (calling A position in the following text), support surface 161 (calling B position in the following text) and stop surface 162 (calling C position in the following text) this three place to occur to clash into and cause.

Therefore, how to eliminate when using keyboard in three problem of strike note of sending of position such as A, B, C, be devoted to after experiment, test and research through creator, finally obtain one and utilize key board unit, except the strike note that sends of position, the operator scheme of keyboard also can be made more smoothly at A, B, C etc. three when using keyboard except effectively eliminating.That is the utility model the problem of strike note that sends at C position when being and how overcoming for the problem solved and use keyboard, and make keycap be able to noiseless carrying out when rebounding, and how to overcome the problem of the strike note sent at A position when using keyboard, how about overcome the problem etc. of the strike note sent at B position when using keyboard.

Utility model content

The utility model is a kind of key board unit, tool one upper shell and a lower house, this key board unit comprises a keycap (keytop), it comprises a basal surface and is configured at the actuator in this basal surface, and be arranged in this upper shell, and a soft flexible member, the top circular rabbet comprising an elastic body and extend from this elastic body, wherein this elastic body supports and this actuator that rebounds, and this top this actuator of circular rabbet clasp, this keycap is upwards bumped against in this upper shell of Shi Buyu that rebounds vertical.

Again according to the viewpoint of a major technique, the utility model can contain a kind of key board unit, tool one upper shell and a lower house, this key board unit comprises a keycap, it actuator comprising a basal surface and extend from this basal surface, and vertically can to move upward one relative to this upper shell in response to an act pressure, and an elastic body, the top extension comprising an elastic body and extend from this elastic body, wherein this elastic body to be located on this lower house and to bear this act pressure, and this top extension is in order to this keycap of clasp, and until this act pressure allay and rebound this keycap time, this keycap vertically upwards not to bump against at this with this upper shell.

If from the angle that another is feasible, the utility model is a kind of key board unit, tool one upper shell and a lower house, this key board unit comprises a keycap, and it comprises a recess and is configured at the actuator in this recess, and can vertically be located in this key board unit slidably, and an elastic body, comprise a holding part in order to support this actuator, to be located on this lower house and this keycap of clasp, when rebounding after this keycap is stressed, there is not any touching with this upper shell or lower house in this keycap.

Accompanying drawing explanation

Fig. 1 is the diagrammatic cross-section of known keyboard structure;

Fig. 2 is the diagrammatic cross-section of the preferred embodiment of keyboard structure of the present utility model;

Fig. 3 is the schematic top plan view increasing position in Fig. 2;

Fig. 4 is the diagrammatic cross-section of the placed-depth of keycap on keyboard;

Fig. 5 is the diagrammatic cross-section that keyboard structure of the present utility model is applied to the preferred embodiment of conventional keyboard;

Fig. 6 A is that keyboard structure of the present utility model uses heelpiece to support the diagrammatic cross-section of the preferred embodiment of trip;

Fig. 6 B is that keyboard structure of the present utility model uses heelpiece to support the diagrammatic cross-section of the preferred embodiment of sidepiece;

Fig. 7 is the schematic diagram of the heelpiece in Fig. 6 A independent of silica gel hemisphere;

Fig. 8 is heelpiece of the present utility model and silica gel hemisphere is integrated schematic diagram;

Fig. 9 A is the diagrammatic cross-section of the another preferred embodiment of keyboard structure of the present utility model;

Fig. 9 B is the diagrammatic cross-section of the elastomeric amplification in Fig. 9 A; And

Figure 10 is the diagrammatic cross-section of conductive film in figure 9 a being set up again the first heelpiece.

[symbol description]

10: keyboard 101: keyboard face

11: keycap 12: card column

13: central boss 14: trip

15: sidepiece 16: top

161: support surface 162: stop surface

17: bottom 171: conductive film

18: silica gel hemisphere 181: surrounding portion

182: holding part 19: outside portion

DP: specification height/thickness HT: highly

20: key board unit 21: card column

22: top/clamping part/stop section 221: stop surface

23: conductive film 24: keycap

241: basal surface 242: trip

243: outside portion 244: sidepiece

245: recess 25: actuator/the first central boss

251: top 252: support surface

26: elastic body/elastic structure/silica gel component/hemisphere

261: holding part 262: elastic body

27: top ring recessed (extension) portion/junction/increase position

28: slight keyboard 281: upper shell

282: lower house 29: press-key structure

DT: second distance 30: first ring concavity cylinder

31: the first drop-centers 32: opening

33: inclined-plane RD: reduction thickness

SD: draw-in groove thickness E D: placed-depth

50: conventional keyboard 51: silica gel hemisphere

52: press-key structure 60: the first heelpiece

DL: move down length 62: the second heelpiece

FD: the first distance

80: the first heelpieces 81: silica gel hemisphere

90: key board unit 91: keycap

92: actuator/the second ring concavity cylinder 93: elastic body

931: elastic body 94: hemisphere

952: the second central boss 97,98: second silica gel layer

102: key board unit.

Embodiment

In order to eliminate when button is stressed rebound time the sound that causes at C position, refer to Fig. 2, demonstrate a key board unit 20, tool one upper shell 281 and a lower house 282, key board unit 20 comprises a keycap (keytop) 24, it comprises a basal surface 241 and is configured at the actuator 25 (its diameter is greater than the diameter of the central boss 13 in Fig. 1) in basal surface 241, and be arranged in upper shell 281, and a soft flexible member 26, comprise a top circular rabbet 27 of an elastic body 262 and own elasticity body 262 extension, wherein elastic body 262 supports and the actuator 25 that rebounds, and top circular rabbet 27 clasp actuator 25, keycap 24 is not upwards bumped against vertical with upper shell 281 in time rebounding.Device 20 more comprises two conductive films (membrane) 23 (useful one deck sheet separates in the centre of two films), upper shell 281 more comprises two card columns 21, it has two tops 22, top 22 is a clamping part 22, top 22 tool one stop surface 221, keycap 24 tool top 251, top 251 tool one supports surface 252, and soft flexible member 26 has a holding part 261.

Namely actuator 25 is arranged in card column 21, actuator 25 is one first central boss 25, basal surface 241 comprises a recess 245, namely first central boss 25 is positioned at recess 245, keycap 24 also can not hit card buckle portion 22 in time rebounding, soft flexible member 26 is a silica gel hemisphere (siliconerubberdome) 26 or a rubber hemispherical or other soft elastomeric objects, and top circular rabbet 27 is a junction 27, and junction 27 is increase position 27.Refer to Fig. 3, the height H T increasing position 27 is a first ring concavity cylinder 30 of 5mm, and first ring concavity cylinder 30 has one first drop-center 31, and it is in order to grip the first central boss 25.This device 20 is a kind of slight keyboard 28, and it has a lower press-key structure 29.First ring concavity cylinder 30 more comprises opening 32 and an inclined-plane 33, the sectional area of opening 32 gos deep into first ring concavity cylinder 30 along inclined-plane inner and decrescence, the first central boss 25 is made to insert drop-center 31, keycap 24 more comprises two trip 242, two outside portion 243 and two sidepieces 244 being located in basal surface 241, and keycap 24 is snapped in card column 21 via trip 242.Refer to Fig. 4, top 22 has more a reduction thickness RD, and reduction thickness RD makes trip 242 and top 22 at least leave a space, reduction thickness RD can be 0.5mm, 22, top has a draw-in groove thickness SD (top 16 thickness in Fig. 1 is 1.4mm) of 0.9mm, and outside portion 243 has a placed-depth ED of 1.5mm.Certainly, device 20 can also change a conventional keyboard 50 as shown in Figure 5 into, and its silica gel hemisphere (rubberdome) 51 is comparatively large, and has a higher press-key structure 52, and has a reduction thickness RD equally.

In order to eliminate when button is pressed down at the sound that A position and B position are caused simultaneously, refer to Fig. 6 A, device 20 more comprises one first heelpiece 60, and it is positioned on conductive film 23, be used to support trip 242 when trip 242 moves down, use the sound eliminating A position.First heelpiece 60 can be a silicagel pad of thickness 1mm, when trip 242 is withstood by the first heelpiece 60, trip 242 will be absorbed in about 0.3mm in the first heelpiece 60, cannot move causing sidepiece 244 simultaneously toward top 22 again, and make sidepiece 244 and top 22 leave a gap, naturally will be noiseless since sidepiece 244 can not strike position, top 22, B again, the height of this gap is about 0.7mm (now the length DL that moves down of keycap 24 is 2.8mm).The first heelpiece 60 in fig. 6 can make the pattern as one second heelpiece 62 in Fig. 6 B into again, it is positioned in card column 21, be used to support sidepiece 244 when sidepiece 244 moves down, to obtain the noiseless effect in B position, the second heelpiece 62 makes sidepiece 244 and top 22 have one first distance FD, similarly, second heelpiece 62 also can cause trip 242 to move toward conductive film 23 more simultaneously, and make trip 242 and conductive film 22 leave a gap, therefore can not clash into, A position is naturally just noiseless again.

The first heelpiece 60 in this Fig. 6 A can as shown in Figure 7 independent of silica gel hemisphere 26, integrated pattern can also be made into together with the heelpiece of other buttons, and become the bottom spacer of whole piece, the silica gel material of the first heelpiece 60 can change again a vinyl plastics acetate fiber (Ethylene-VinylAcetate into, EVA) cotton pad, has the effect eliminated and clash into sound equally.Certainly, can also change pattern as shown in Figure 8 into, the first heelpiece 80 is now one-body molded with silica gel hemisphere 81.

A kind of key board unit 20 is according to viewpoint the utility model of a major technique, tool upper shell 281 and lower house 282, key board unit 20 comprises keycap 24, it actuator 25 comprising basal surface 241 and extend from basal surface 241, and vertically can to move upward one relative to upper shell 281 in response to an act pressure, and elastic body 26, comprise a top extension 27 of elastic body 262 and extension own elasticity body 262, wherein elastic body 262 to be located on lower house 282 and to bear this act pressure, and top extension 27 is in order to clasp keycap 24, and until this act pressure allay and rebound keycap 24 time, keycap 24 vertically upwards not to bump against at this with upper shell 281.

This device 20 more comprises conductive film 23, and keycap 24 comprises a basal surface 241 and is configured at an actuator 25 of basal surface 241, and actuator 25 can do in upper shell 281 that this is vertical to motion.Refer to Fig. 9 A, demonstrate a key board unit 90, in order to avoid the first heelpiece 60 is after Long-Time Service, its silica gel material is bearing the impact of permanent shock of trip 242 and tired, sound will be had to run out at A position, this actuator 25 can change the actuator 92 in Fig. 9 A into, be one second ring concavity cylinder 92 and produce this act pressure, this act pressure is one vertical to pressure, this keycap 91 does not occur vertical to direct shock with upper shell 281, elastic body 931 comprises a hemisphere 94, top extension now becomes one second central boss 952, and the second ring concavity cylinder 92 has one second drop-center 922, it is in order to grip the second central boss 952.Refer to Fig. 9 B, when the second ring concavity cylinder 92 down compression elasticity body 93 time, by the buffering of the second silica gel layer 97,98 of elastic body 93, the setting of the first heelpiece 60 can be saved, the noiseless effect in A position can be obtained equally.

Refer to Figure 10, the keycap 91 demonstrating key board unit 101 now comprises basal surface 241 and is configured at the actuator 92 of basal surface 241, actuator 92 is the second ring concavity cylinder 92, keycap 91 comprises the trip 242 being located in basal surface 241, device 101 more comprises the first heelpiece 60 and conductive film 23, this first heelpiece 60 is positioned on conductive film 23, be used to support trip 242 when trip 242 moves down, the first heelpiece 60 so can be utilized to share a part for the pressure that user executes, and then alleviate the burden of elastic body 93.

Again from another enforceable angle, the utility model can contain a kind of key board unit 20, tool upper shell 281 and lower house 282, key board unit 20 comprises keycap 24, it comprises recess 245 and is configured at the actuator 25 in recess 245, and can vertically be located in key board unit 20 slidably, and this elastic body (i.e. silica gel hemisphere 26), comprise a holding part 261 in order to support actuator 25, to be located on lower house 282 and clasp keycap 24, when rebounding after keycap 24 is stressed, there is not any touching with upper shell 281 in keycap 24.Certainly, elastic body 26 now comprises this mooring structure (namely increasing position 27) and an elastic structure (i.e. rubberdome26), and holding part 261 is positioned on elastic structure 26.Keycap 24 tool first central boss 25 and top 251, recess 245 has basal surface 241, upper shell 281 has a stop section (i.e. top 22), and this top 251 tool supports surface 252, support surface 252 and stop surface 221 between have a second distance DT, elastic body 26 mooring first central boss 25, when keycap 24 is stressed rebound time, second distance DT is greater than zero, and the height of stop section 22 can be less than a specification height (1.4mm).Key board unit 20 is that the keyboard of a computing machine or the keyboard be applied on a telephone set also can.The degree of depth of elastic body 26 mooring first central boss 25, in order to determine the degree that second distance DT is greater than zero, this second distance DT is also relevant with the length of the first central boss 25 and the height of rubberdome.

The utility model can also be a kind of key board unit 20, tool one upper shell 281 and a lower house 282, key board unit 20 comprises a card column 21, be located on upper shell 281, its top has two clamping parts (i.e. top 22), one keycap 24, they one first central boss 25 and two trips 242 comprising a basal surface 241 and extend from basal surface 241, wherein trip 242 is snapped in this clamping part, in case keycap 24 vagus escape upper shell 281, and an elastic body (i.e. silica gel hemisphere 26), comprise elastic body's (its section namely illustrate in label 26 indication part), one first heelpiece 60 and be connected to the top extension (namely increasing position 27) of this elastic body, wherein this top extension clasp first central boss 25, make keycap 24 when stressed rebounding, trip 242 does not contact this clamping part, and this trip 242 contacts with lower house 282 indirectly across the first heelpiece 60, when making both phase strikings, strike note is diminished.

The utility model also can be a kind of key board unit 20, tool one upper shell 281 and a lower house 282, key board unit 20 comprises a card column 21, be located on upper shell 281, its top has two clamping parts (i.e. top 22), one keycap 24, they one first central boss 25 and two trips 242 comprising a basal surface 241 and extend from basal surface 241, wherein trip 242 is snapped in this clamping part, in case keycap 24 vagus escape upper shell 281, and an elastic body (i.e. silica gel hemisphere 26), comprise elastic body's (its section namely illustrate in label 26 indication part) and be connected to the top extension (namely increasing position 27) of this elastic body, wherein this top extension clasp first central boss 25, make keycap 24 when stressed rebounding, trip 242 is contact card buckle portion not, and trip 242 is when contacting with lower house 282, basal surface 241 not with this clamping part phase striking, basal surface 241 is avoided with the strike note of this clamping part phase striking.

The utility model is again a kind of key board unit 20, tool one upper shell 281 and a lower house 282, key board unit 20 comprises a card column 21, be located on upper shell 281, its top has two clamping parts (i.e. top 22), one keycap 24, it comprises a recess 245 and is configured at one first central boss 25 and two trips 242 in recess 245, wherein trip 242 is snapped in this clamping part, in case keycap 24 vagus escape upper shell 281, and an elastic body (i.e. silica gel hemisphere 26), comprise elastic body's (its section namely illustrate in label 26 indication part) and be connected to the top extension (namely increasing position 27) of this elastic body, wherein this top extension clasp first central boss 25, make keycap 24 when stressed rebounding, trip 242 does not contact this clamping part.

Embodiment

1. a key board unit, tool one upper shell and a lower house, this key board unit comprises a keycap (keytop), it comprises a basal surface and is configured at the actuator in this basal surface, and be arranged in this upper shell, and a soft flexible member, the top circular rabbet comprising an elastic body and extend from this elastic body, wherein this elastic body supports and this actuator that rebounds, and this top this actuator of circular rabbet clasp, this keycap is upwards bumped against in this upper shell of Shi Buyu that rebounds vertical.

2. as the device in embodiment 1, more comprise a conductive film (membrane), and this upper shell more comprises a card column, this card column has a top, this top is a clamping part, namely this actuator is arranged in this card column, this actuator is one first central boss, this basal surface comprises a recess, namely this first central boss is positioned at this recess, this keycap also can not clash into this clamping part in time rebounding, this soft flexible member is silica gel hemisphere (siliconerubberdome) or a rubber hemispherical, this top circular rabbet is a junction, this junction is increase position, this increases position is a first ring concavity cylinder, and this first ring concavity cylinder has one first drop-center, it is in order to grip this first central boss, this device is a conventional keyboard or a slight keyboard.

3. as the device in embodiment 1 ~ 2, wherein this first ring concavity cylinder more comprises an opening and an inclined-plane, and the sectional area of this opening gos deep into this ring-type column body along this inclined-plane and decrescence, makes this central boss insert this drop-center.

4. as the device in embodiment 1 ~ 3, wherein this keycap more comprise be located in this basal surface a trip, an outside portion and a sidepiece, this keycap is snapped in this card column via this trip, this top has more a reduction thickness, and this reduction thickness makes this trip and this top at least maintain the space leaving this reduction thickness, this reduction thickness is 0.5mm, and this top has a draw-in groove thickness of 0.9mm, and this outside portion has a placed-depth of 1.5mm.

5. as the device in embodiment 1 ~ 4, more comprise one first heelpiece, it is positioned on this conductive film, be used to support this trip when this trip moves down, this heelpiece makes this sidepiece and this top leave a gap, this first heelpiece is a silicagel pad or vinyl plastics acetate fiber (EVA) cotton pad, and this silicagel pad is independent of this silica gel hemisphere or one-body molded with this silica gel hemisphere.

6. as the device in embodiment 1 ~ 5, more comprise one second heelpiece, it is positioned in this card column, is used to support this sidepiece when this sidepiece moves down, and this second heelpiece makes this sidepiece and this top leave gap first distance.

7. a key board unit, tool one upper shell and a lower house, this key board unit comprises a keycap, it actuator comprising a basal surface and extend from this basal surface, and vertically can to move upward one relative to this upper shell in response to an act pressure, and an elastic body, the top extension comprising an elastic body and extend from this elastic body, wherein this elastic body to be located on this lower house and to bear this act pressure, and this top extension is in order to this keycap of clasp, and until this act pressure allay and rebound this keycap time, this keycap vertically upwards not to bump against at this with this upper shell.

8. as the device in embodiment 7, more comprise a conductive film, and this keycap comprises a basal surface and is configured at an actuator of this basal surface, this actuator can be done this and vertically to motion is one second ring concavity cylinder and produces this act pressure in this upper shell, this act pressure is one vertical to pressure, this keycap does not occur vertical to direct shock with this upper shell, this elastic body is a hemisphere, this top extension is one second central boss, and this second ring concavity cylinder has one second drop-center, it is in order to grip this second central boss.

9. as the device in embodiment 7 ~ 8, wherein this keycap comprises a basal surface and is configured at an actuator of this basal surface, this actuator is one second ring concavity cylinder, and this keycap more comprises the trip being located in this basal surface, this device more comprises one first heelpiece and a conductive film, this first heelpiece is positioned on this conductive film, is used to support this trip when this trip moves down.

10. a key board unit, tool one upper shell and a lower house, this key board unit comprises a keycap, it comprises a recess and is configured at the actuator in this recess, and can vertically be located at slidably in this key board unit, and an elastic body, comprise a holding part in order to support this actuator, to be located on this lower house and this keycap of clasp, when rebounding after this keycap is stressed, there is not any touching with this upper shell or lower house in this keycap.

11. as the device in embodiment 10, wherein this elastic body comprises a mooring structure and an elastic structure, this holding part is positioned on this elastic structure, this upper shell has a stop section, this stop section has a stop surface, the height of this stop section is less than a specification height, this keycap has one first central boss and a top, this recess has a basal surface, and this top tool one supports surface, this is supported between surface and this stop surface a second distance, this first central boss of this elastic body mooring, when this keycap is stressed rebound time, this second distance is greater than zero.

12. as the device in embodiment 10 ~ 11, and it is the keyboard on the keyboard of a computing machine or a telephone set, and the wherein degree of depth of this this first central boss of mooring structure mooring, in order to determine the degree that this second distance is greater than zero.

In sum, the utility model really can with the design of a novelty, position is increased in order to grip this central boss by silica gel hemisphere, and make keycap can not touch this top when stressed rebounding, and the first heelpiece used is positioned at the pattern on conductive film, fruit can be obtained and when trip moves down, to be supported trip and make sidepiece and top leave the effect in gap.Therefore all personages haveing the knack of this skill, get Ren Shi craftsman thinks and modifies as all, so neither de-if attached claim institute is for Protector.

Claims (12)

1. a key board unit, tool one upper shell and a lower house, this key board unit comprises:

One keycap, it comprises a basal surface and is configured at the actuator in this basal surface, and is arranged in this upper shell; And

One soft flexible member, the top circular rabbet comprising an elastic body and extend from this elastic body, wherein:

This elastic body supports and this actuator that rebounds; And

This top this actuator of circular rabbet clasp, makes this keycap upwards bump against in this upper shell of Shi Buyu that rebounds vertical.

2. device as claimed in claim 1, more comprise a conductive film, and this upper shell more comprises a card column, this card column has a top, this top is a clamping part, namely this actuator is arranged in this card column, this actuator is one first central boss, this basal surface comprises a recess, namely this first central boss is positioned at this recess, this keycap also can not clash into this clamping part in time rebounding, this soft flexible member is a silica gel hemisphere or a rubber hemispherical, this top circular rabbet is a junction, this junction is increase position, this increases position is a first ring concavity cylinder, and this first ring concavity cylinder has one first drop-center, it is in order to grip this first central boss, this device is a conventional keyboard or a slight keyboard.

3. device as claimed in claim 2, wherein this first ring concavity cylinder more comprises an opening and an inclined-plane, and the sectional area of this opening gos deep into this first ring-type column body along this inclined-plane and decrescence, makes this first central boss insert this drop-center.

4. device as claimed in claim 2, wherein this keycap more comprise be located in this basal surface a trip, an outside portion and a sidepiece, this keycap is snapped in this card column via this trip, this top has more a reduction thickness, and this reduction thickness makes this trip and this top at least leave a space, this top has a draw-in groove thickness, and this outside portion has a placed-depth.

5. device as claimed in claim 4, more comprise one first heelpiece, it is positioned on this conductive film, be used to support this trip when this trip moves down, this first heelpiece makes this sidepiece and this top leave a gap, this first heelpiece is a silicagel pad or a vinyl plastics acetate fiber cotton pad, and this silicagel pad is independent of this silica gel hemisphere or one-body molded with this silica gel hemisphere.

6. device as claimed in claim 4, more comprise one second heelpiece, it is positioned in this card column, is used to support this sidepiece when this sidepiece moves down, and this second heelpiece makes this sidepiece and this top have one first distance.

7. a key board unit, tool one upper shell and a lower house, this key board unit comprises:

One keycap, it actuator comprising a basal surface and extend from this basal surface, and vertically can to move upward one relative to this upper shell in response to an act pressure; And

One elastic body, the top extension comprising an elastic body and extend from this elastic body, wherein:

This elastic body to be located on this lower house and to bear this act pressure; And

This top extension in order to this keycap of clasp, and until this act pressure allay and rebound this keycap time, this keycap vertically upwards not to bump against at this with this upper shell.

8. device as claimed in claim 7, more comprise a conductive film, and this keycap comprises a basal surface and is configured at an actuator of this basal surface, this actuator can be one second ring concavity cylinder in this upper shell this vertical moving upward inherent and produce this act pressure, this act pressure is one vertically to upward pressure at this, this keycap does not occur in this and vertically upwards directly to clash into this upper shell, this elastic body is a hemisphere, this top extension is one second central boss, and this second ring concavity cylinder has one second drop-center, it is in order to grip this second central boss.

9. device as claimed in claim 7, wherein this keycap comprises a basal surface and is configured at an actuator of this basal surface, this actuator is one second ring concavity cylinder, and this keycap more comprises the trip being located in this basal surface, this device more comprises one first heelpiece and a conductive film, this first heelpiece is positioned on this conductive film, is used to support this trip when this trip moves down.

10. a key board unit, tool one upper shell and a lower house, this key board unit comprises:

One keycap, it comprises a recess and is configured at the actuator in this recess, and can vertically be located in this key board unit slidably; And

One elastic body, comprise a holding part in order to support this actuator, to be located on this lower house and this keycap of clasp, when rebounding after this keycap is stressed, there is not any touching with this upper shell or lower house in this keycap.

11. devices as claimed in claim 10, wherein this elastic body comprises a mooring structure and an elastic structure, this holding part is positioned on this elastic structure, this upper shell has a stop section, this stop section has a stop surface, the height of this stop section is less than a specification height, this keycap has one first central boss and a top, this recess has a basal surface, and this top tool one supports surface, this is supported between surface and this stop surface a second distance, this first central boss of this elastic body mooring, when this keycap is stressed rebound time, this second distance is greater than zero.

12. devices as claimed in claim 11, it is the keyboard on the keyboard of a computing machine or a telephone set, and the wherein degree of depth of this this first central boss of mooring structure mooring, in order to determine the degree that this second distance is greater than zero.