TWI584324B - Keyboard device - Google Patents

Description

Keyboard device

The invention relates to a keyboard device which uses a silicone rubber dome to turn on two films, in particular to a keyboard device which uses a raised portion of a silicone hemisphere to hold a keycap to obtain a silent sound.

The keyboard used in a typical computer will make a sound when tapping a button, but this sound often causes a user who is interested in peace; in a workplace, there are still people who still need to use the keyboard during lunch break. The sound will cause trouble for other people who need to rest. Referring to the first figure, a structural cross-sectional view of a keyboard 10 is shown, including a key cap 11, a post 12 (also referred to as a crater), a central stud 13 and a balanced movement in the post 12 The cassette 14, the left and right side portions 15, the left and right two top portions 16 (i.e., the stopper portion, the normal gauge height/thickness DP is 1.4 mm), the left and right bottom portions 17, a conductive film 171, and a silicone hemisphere (silicone) The rubber dome 18 and the two outer portions 19, and the insertion depth ED of the outer portion 19 below the keyboard surface 101 of the keyboard 10 is 2 mm, and the height of the two surrounding portions 181 of the silicone hemisphere 18 beside the central stud 13 The HT is 0.8 mm.

It can be seen from the first figure that the existing keyboard 10 will cause sound. The reason for the ringing is usually that when the keycap 11 is pressed down, the side portion 15 strikes one of the top portion 16 against the top surface 161 and the click of the clicker 14 against the bottom portion 17 (of course, if the central stud 13 When the silicone rubber hemisphere 18 has been pushed to the conductive film 171, the cassette 14 can no longer hit the bottom portion 17, so that there is no sound hitting the bottom portion 17, and when the central stud 13 of the key cap 11 is bounced back by the rubber dome 18, The click 14 strikes the sound of the stop surface 162 of the top portion 16 (the stop surface 162 serves to prevent the click of the click 14 from falling off), that is, the sound emitted when the keyboard 10 is used, because the key cap 11 It is caused by the impact at the bottom 17 (hereinafter referred to as the A portion), the abutting surface 161 (hereinafter referred to as the B portion), and the stopper surface 162 (hereinafter referred to as the C portion).

Therefore, how to eliminate the impact sounds emitted by the keyboard, such as A, B, C, etc., after the inventor devoted himself to experiment, test and research, finally obtained a keyboard device, in addition to effectively eliminating the use of the keyboard in A In addition to the impact sounds from the three parts, B, C, etc., the keyboard's operating mode can be made smoother. That is, the problem to be solved by the present invention is how to overcome the problem of the impact sound emitted at the C portion when the keyboard is used, so that the key cap can be silently performed when rebounding, and how to overcome the use of the keyboard in the A portion. The problem of the impact sound emitted, how to overcome the problem of the impact sound generated at the B part when using the keyboard.

The present invention is a keyboard device comprising an upper casing, a conductive film, and a key top, comprising a bottom surface and an actuating member disposed in the bottom surface, the actuating member is disposed Inside the upper casing, a lower casing, and a soft elastic member are located on the conductive film. The soft elastic member has an engaging portion for engaging the key cap so that the key cap does not jump off the soft elastic member when rebounding.

According to a main technical point of view, the present invention is a keyboard device comprising an upper casing and a key cap movable upwardly relative to the upper casing in response to an actuating pressure, a lower casing, And an elastic body disposed on the lower casing, the elastic body is subjected to the actuating pressure for retaining the keycap, and when the actuating pressure is released and rebounded to the keycap, the keycap does not The upper casing collides vertically in the vertical direction.

From another perspective of implementation, the present invention can be applied to a keyboard device having an upper casing and a lower casing, the keyboard device including a key cap that is vertically slidably disposed in the keyboard device, and An elastic body is disposed on the lower casing for retaining the keycap. When the keycap rebounds after being pressed by the keycap, the keycap does not touch any of the upper casing.

10‧‧‧ keyboard

101‧‧‧ keyboard face

11‧‧‧Key Cap

12‧‧‧clamp

13‧‧‧Central stud

14‧‧‧Carmen

15‧‧‧ side

16‧‧‧ top

161‧‧‧Right surface

162‧‧‧stop surface

17‧‧‧ bottom

171‧‧‧Electrical film

18‧‧‧ Silicone Hemisphere

181‧‧‧ Surrounding

19‧‧‧Outside

DP‧‧‧Specification height/thickness

HT‧‧‧ height

20‧‧‧ keyboard device

21‧‧‧clamp

22‧‧‧Top/Snap/Block

221‧‧‧stop surface

23‧‧‧Electrical film

24‧‧‧Key Cap

241‧‧‧ bottom surface

242‧‧‧Carmen

243‧‧‧Outside

244‧‧‧ side

245‧‧‧ recess

25‧‧‧actuator/first central stud

251‧‧‧ arrive at the top

252‧‧‧Right surface

26‧‧‧Soft elastic element / elastomer / silicone element / hemisphere

27‧‧‧Connecting/increasing parts

28‧‧‧Thin keyboard

281‧‧‧Upper casing

282‧‧‧ Lower case

29‧‧‧Key structure

DT‧‧‧Second distance

30‧‧‧First ring concave cylinder

31‧‧‧First central groove

32‧‧‧ openings

33‧‧‧Bevel

RD‧‧‧reduced thickness

SD‧‧‧ card slot thickness

ED‧‧ ‧ depth of insertion

50‧‧‧Traditional keyboard

51‧‧‧ Silicone Hemisphere

52‧‧‧Key structure

60‧‧‧ first bottom pad

DL‧‧‧Down length

62‧‧‧second bottom pad

FD‧‧‧first distance

80‧‧‧First mat

81‧‧‧ Silicone Hemisphere

90‧‧‧ keyboard device

91‧‧‧Key Cap

92‧‧‧actuator/second ring concave cylinder

93‧‧‧ Elastomers

94‧‧‧hemisphere

952‧‧‧Second central stud

97,98‧‧‧Secondary rubber layer

102‧‧‧ keyboard device

The first figure is a schematic cross-sectional view of a conventional keyboard structure; the second figure is a schematic cross-sectional view of a preferred embodiment of the keyboard structure of the present invention; and the third figure is a top view of the elevated portion of the second figure; Figure 4 is a schematic cross-sectional view showing the depth of insertion of the keycap on the keyboard; Figure 5 is a schematic cross-sectional view showing a preferred embodiment of the keyboard structure of the present invention applied to a conventional keyboard; and Figure 6 is a keyboard of the present invention. A schematic cross-sectional view of a preferred embodiment of a structure using a bottom pad to resist a top click; Figure 6 is a cross-sectional view showing a preferred embodiment of the keyboard structure of the present invention using a bottom pad to abut the top side; and the seventh drawing is a schematic view of the bottom pad in the sixth drawing A being independent of the silicone hemisphere; 8 is a schematic view showing the bottom pad of the present invention and the silicone hemisphere integrally formed; ninth drawing A is a schematic cross-sectional view of another preferred embodiment of the keyboard structure of the present invention; and ninth drawing B is the ninth drawing A An enlarged cross-sectional view of the elastomer in the middle; and a tenth view: a schematic cross-sectional view of the first subpad added to the conductive film in FIG.

In order to eliminate the sound caused by the C portion when the button is bounced back, please refer to the second figure, showing a keyboard device 20 including an upper casing 281 and two conductive films 23 (in two films) The middle is separated by a plastic sheet, and a key top 24 includes a bottom surface 241 and an actuating member 25 disposed in the bottom surface 241 (the diameter of which is larger than the central stud 13 in the first figure). The diameter of the actuating member 25 is disposed in the upper casing 281, the lower casing 282, and a soft elastic member 26 are disposed on the conductive film 23. The soft elastic member 26 has an engaging portion 27 for engaging the keycap 24. The keycap 24 does not jump off the soft elastic member 26 when it is springed back. The upper housing 281 further includes two latches 21 having two top portions 22, the top portion 22 is a latching portion 22, the top portion 22 has a blocking surface 221, and the key cap 24 has a top portion 251 against the top. The portion 251 has an abutting surface 252.

The actuating member 25 is disposed in the post 21, and the actuating member 25 is a first central stud 25. The key cap 24 does not hit the latching portion 22 when rebounding. The soft elastic member 26 is a silicone hemisphere (silicone). Rubber dome 26 or a rubber hemisphere or other soft elastic object, the joint portion 27 is a raised portion 27. This device 20 is a thin keyboard 28 having a lower button structure 29. Referring to the third figure, the height HT of the elevated portion 27 is one of the first annular concave cylinders 30 of 5 mm, and the first annular concave cylinder 30 has a first central recess 31 for holding the first A central stud 25 is provided. The first ring-shaped recessed cylinder 30 further includes an opening 32 and a sloped surface 33. The cross-sectional area of the opening 32 is gradually reduced along the inclined surface to penetrate the inside of the first ring-shaped concave cylinder 30, and the first central protruding column 25 is placed in the central groove. The key cap 24 further includes a second latch 242, two outer portions 243 and two side portions 244 received on the bottom surface 241. The key cap 24 is buckled into the post 21 via the latch 242, and the bottom surface 241 includes a The recess 245, the first central stud 25 is located in the recess 245. Referring to the fourth figure, the top portion 22 has a reduced thickness RD, and the reduced thickness RD causes at least one gap between the cassette 242 and the top portion 22. The reduced thickness RD can be 0.5 mm, and the top portion 22 has a card thickness of 0.9 mm. SD (the top 16 in the first figure has a thickness of 1.4 mm) and the outer side portion 243 has a depth of insertion ED of 1.5 mm. Of course, the device 20 can also be changed to a conventional keyboard 50 as shown in the fifth figure, the rubber dome 51 being larger, having a higher button structure 52, and also having a reduced thickness RD.

In order to simultaneously eliminate the sound caused by the A and B parts when the button is pressed, please refer to the sixth figure A, the device 20 further includes a first The bottom pad 60 is disposed on the conductive film 23 to abut the top tab 242 when the cassette 242 is moved downward, thereby eliminating the sound of the A portion. The first bottom pad 60 may be one of the thicknesses of 1 mm. When the cassette 242 is held by the first bottom pad 60, the cassette 242 will sink into the first bottom pad 60 by about 0.3 mm, which will simultaneously cause the side portion 244. It is no longer possible to move to the top 22, leaving a gap between the side portion 244 and the top portion 22. Since the side portion 244 will no longer hit the top portion 22, the B portion will naturally be silent, and the height of the gap is about 0.7 mm (at this time, the key) The downward movement length DL of the cap 24 is 2.8 mm). The first bottom pad 60 in FIG. 6A can be modified into a second bottom pad 62 as in FIG. 6B, which is located on the post 21 for abutting when the side portion 244 is moved down. The side portion 244 is used to obtain the silent effect of the B portion. The second bottom pad 62 has the first portion FD of the side portion 244 and the top portion 22. Similarly, the second bottom pad 62 also causes the click portion 242 to fail to pass the conductive film. 23 moves, leaving a gap between the cassette 242 and the conductive film 22, so that it does not hit any more, and the A portion is naturally silent.

The first bottom pad 60 in the sixth figure A can be independent of the silicone hemisphere 26 as shown in the seventh figure, or can be formed into an integrated pattern with the bottom pads of other buttons, and becomes a whole piece of bottom. The gasket and the silicone material of the first bottom pad 60 can be changed into an Ethylene-Vinyl Acetate (EVA) cotton pad, which also has the effect of eliminating impact sound. Of course, it is also possible to change to the mode as shown in the eighth figure, in which the first bottom pad 80 is integrally formed with the silicone hemisphere 81.

According to a main technical point of view, the present invention is a keyboard device 20 comprising an upper casing 281 and a keycap 24 movable upwardly relative to the upper casing 281 in response to an actuating pressure, a lower casing 282, And an elastic body 26 disposed on the lower casing 282, the elastic body 26 is subjected to the actuating pressure for retaining the keycap 24, and when the actuating pressure is released and the keycap 24 is rebounded, the keycap 24 does not The upper casing 281 collides in this vertical direction.

The device 20 further includes a conductive film 23, wherein the keycap 24 includes a bottom surface 241 and an actuator 25 disposed on the bottom surface 241. The actuator 25 can perform the vertical movement in the upper housing 281. Referring to FIG. 9A, a keyboard device 90 is shown. In order to prevent the first rubber pad 60 from being fatigued after being subjected to the long-term impact of the card 242 after long-term use, there is a sound running in the A portion. The actuation member 25 can be changed to the actuation member 92 in the ninth diagram A, that is, a second annular concave cylinder 92 and the actuation pressure is generated. The actuation pressure is a vertical direct pressure, and the key cap 91 is The vertical body 93 does not directly collide with the upper casing 281, and the elastic body 93 includes a half sphere 94 and a second central protrusion 952 connected to the top end of the hemisphere 94, and the second ring concave cylinder 92 has a second. A central recess 922 is used to hold the second central stud 952. Referring to FIG. IB, when the second annular concave cylinder 92 presses the elastic body 93 downward, the cushioning of the second rubber layer 97, 98 of the elastic body 93 can eliminate the setting of the first bottom cushion 60. It can also achieve the silent effect of the A part.

Referring to the tenth figure, the keycap 91 of the keyboard device 102 at this time includes a bottom surface 241 and an actuator 92 disposed on the bottom surface 241. The actuator 92 is a second annular concave cylinder 92. The key cap 91 includes The device 102 further includes a first bottom pad 60 and a conductive film 23, and the first bottom pad 60 is disposed on the conductive film 23 for abutting the card when the cassette 242 is moved down.榫 242, so that the first bottom pad 60 can be used for sharing Part of the pressure applied by the person, thereby reducing the burden on the elastomer 93.

From another perspective, the present invention can be applied to a keyboard device 20 having an upper casing 281 and a lower casing 282. The keyboard device 20 includes a key cap 24 that can be vertically slidably disposed in the keyboard device 20. And the elastic body (ie, the silicone hemisphere 26) is disposed on the lower casing 282 for retaining the keycap 24. When the keycap 24 is rebounded after being pressed by the keycap 24, the keycap 24 does not occur with the upper casing 281. Any touch. Of course, the elastomer 26 at this time includes the mooring structure (i.e., the elevated portion 27) and a resilient structure (i.e., a rubber dome). The key cap 24 has a first central stud 25 and an abutting top 251. The upper casing 281 has a stop portion (ie, a top portion 22), and the abutting top portion 251 has an abutting surface 252 against the top surface 252 and the stop surface 221 There is a second distance DT between the elastic body 26 and the first central protrusion 25. When the keycap 24 is rebounded, the second distance DT is greater than zero, and the height of the stopping portion 22 can be less than a standard height (1.4). Mm). The keyboard device 20 is a keyboard for a computer or a keyboard for use on a telephone. The elastic body 26 is attached to the depth of the first central stud 25 to determine the extent that the second distance DT is greater than zero. The second distance DT is also related to the length of the first central stud 25 and the height of the rubber dome.

The present invention can also be a keyboard device 20 having an upper casing 281 and a lower casing 282. The keyboard device 20 includes a post 21 disposed on the upper casing 281 and having a second buckle portion at its top end (ie, the top portion 22). a key cap 24 includes a bottom surface 241 and a first central stud 25 and a second latch 242 extending from the bottom surface 241, wherein the latch 242 is snapped to the latch portion to prevent the keycap 24 Disengaged from the housing 281, and an elastomer (ie, the silicone hemisphere 26), including the elastic body (the cross section is the reference numeral 26 in the figure a first bottom pad 60 and a top end extension (ie, a raised portion 27) attached to the elastic body, wherein the top end portion buckles the first central stud 25 so that the key cap 24 is When the force is rebounded, the cassette 242 does not contact the buckle portion, and the cassette 242 is in indirect contact with the lower housing 282 via the first bottom pad 60. When the two are struck, the impact sound is eliminated. .

The present invention can also be a keyboard device 20 having an upper casing 281 and a lower casing 282. The keyboard device 20 includes a post 21 disposed on the upper casing 281 and having a second buckle portion at its top end (ie, the top portion 22). a key cap 24 includes a bottom surface 241 and a first central stud 25 and a second latch 242 extending from the bottom surface 241, wherein the latch 242 is snapped to the latch portion to prevent the keycap 24 The upper housing 281 is removed, and an elastomer (ie, the silicone hemisphere 26) includes an elastic body (the cross section of which is indicated by reference numeral 26 in the drawing) and a top end extension connected to the elastic body (ie, the elevated portion 27). Wherein the top extension portion latches the first central stud 25 such that when the keycap 24 rebounds under force, the click 242 does not contact the buckle portion, and when the latch 242 contacts the lower housing 282, The bottom surface 241 does not strike the buckle portion, and the impact sound of the bottom surface 241 striking the buckle portion is avoided.

The present invention is also a keyboard device 20 having an upper casing 281 and a lower casing 282. The keyboard device 20 includes a post 21 disposed on the upper casing 281 and having a top end portion having two latching portions (ie, a top portion 22). The keyhole 24 includes a recess 245 and a first central stud 25 and a second latch 242 disposed in the recess 245. The latch 242 is fastened to the latch to prevent the keycap 24 from coming off. a housing 281, and an elastomer (ie, a silicone hemisphere 26), including an elastic body (the cross-section of which is indicated by reference numeral 26 in the figure) and attached to the bullet One of the top ends of the body (ie, the raised portion 27), wherein the top end portion buckles the first central stud 25 so that the latch 242 does not contact the latch portion when the key cap 24 bounces back.

Example

A keyboard device comprising a post having a top portion, a conductive film, and a key cap comprising a bottom surface and an actuating member disposed in the bottom surface, the actuating member penetrating the post And a glue component disposed on the conductive film, the glue component having an engaging portion for engaging the key cap so that the key cap does not contact the top when the spring is rebounded.

2. The device of embodiment 1, wherein the upper housing further comprises a post, the post has a top portion, the top portion is a snap portion, and the actuating member is disposed in the post, the actuating The member is a first central stud, and the key cap does not hit the buckle portion when rebounding. The silicone soft elastic member is a silicone rubber dome or a rubber hemisphere, and the connecting portion is increased. The portion is a conventional keyboard or a thin keyboard, the bottom surface includes a recess, the first central stud is located in the recess, and the raised portion is a first annular recessed cylinder, and the portion The first annular recessed cylinder has a first central recess for holding the first central ledge.

3. The device of any one of embodiments 1 to 2, wherein the first annular concave cylinder further comprises an opening and a slope, the cross-sectional area of the opening is gradually reduced along the inclined surface deep inside the annular cylinder, and the central portion A stud is placed in the central recess.

4. The device of any of the preceding claims, wherein the keycap further comprises a latch, an outer portion and a side portion received on the bottom surface, the key cap being snapped to the card via the latch Inside the column, the top has a reduced thickness, and the The reduced thickness is such that the cassette and the top maintain at least one of the reduced thickness, the reduced thickness being 0.5 mm, the top having a card slot thickness of 0.9 mm, and the outer portion having a depth of insertion of 1.5 mm.

5. The device of any of embodiments 1 to 4, further comprising a first bottom pad on the conductive film for abutting the latch when the cassette is moved down, the bottom pad causing the side portion to A gap is left at the top, and the first bottom pad is a silicone pad or a vinyl acetate (EVA) cotton pad, and the silicone pad is formed integrally with or integrally formed with the silicone hemisphere.

6. The device of any of embodiments 1 to 5, further comprising a second bottom pad on the post for abutting the side when the side is moved down, the second bottom pad making the side There is a gap from the top of the first distance.

A keyboard device comprising an upper housing, a key cap movable in a vertical upward direction relative to the upper housing in response to an actuating pressure, comprising a bottom surface and an actuating member disposed on the bottom surface, wherein The actuating member can perform a vertical movement in the column, a lower casing, and an elastic body disposed on the lower casing, the elastic body receiving a vertical direct pressure of the actuating member for retaining the key The cap does not collide with the upper casing in the vertical direction when the cap is released to the active pressure and released back to the keycap.

8. The device of embodiment 7, further comprising a conductive film, wherein the key cap comprises a bottom surface and an actuating member disposed on the bottom surface, wherein the actuating member can perform the vertical movement in the upper housing Is a second annular concave cylinder and generating the operating pressure, the operating pressure is a vertical direct pressure, the key cap does not directly collide with the upper casing, the elastic system comprises a half sphere and is connected to the hemisphere a second central stud at the top of the body, and the The second annular concave cylinder has a second central recess for holding the second central projection.

9. The device of any of embodiments 7-8, wherein the keycap comprises a bottom surface and an actuating member disposed on the bottom surface, the actuating member is a second annular concave cylinder, and the keycap further comprises a device disposed on the bottom surface, the device further includes a first bottom pad and a conductive film, the first bottom pad is located on the conductive film for abutting the card when the card is moved down .

10. A keyboard device having an upper housing and a lower housing, the keyboard device comprising a key cap disposed vertically in the keyboard device, and an elastic body disposed on the lower housing The keycap is tied, and when the keycap is bounced back under force, the keycap does not touch any of the upper casing.

11. The device of embodiment 10, wherein the elastic body comprises a tethered structure and a resilient structure, the upper housing having a stop portion having a stop surface, the height of the stop portion The keycap has a first central stud and an abutting top, wherein the abutting top has an abutting surface, and the abutting surface and the blocking surface have a second distance, the elastic system remains The first central stud, the second distance is greater than zero when the keycap is bounced back.

12. The device of any of embodiments 10-11, which is a computer keyboard or a keyboard on a telephone, wherein the mooring structure retains the depth of the first central stud to determine that the second distance is greater than The degree of zero.

In summary, the present invention can be used in a novel design to hold the central stud by the raised portion of the silicone hemisphere, so that the key cap does not touch the top when it is bounced back, and First mat used The mode on the conductive film can achieve the effect of abutting the top of the cassette when the cassette is moved down and leaving a gap between the side and the top. Therefore, anyone who is familiar with this skill can be modified by all kinds of ideas, but they are not protected by the scope of the patent application.

20‧‧‧ keyboard device

21‧‧‧clamp

22‧‧‧Top/Snap/Block

221‧‧‧stop surface

23‧‧‧Electrical film

24‧‧‧Key Cap

241‧‧‧ bottom surface

242‧‧‧Carmen

243‧‧‧Outside

244‧‧‧ side

245‧‧‧ recess

25‧‧‧actuator/first central stud

251‧‧‧ arrive at the top

252‧‧‧Right surface

26‧‧‧ Elastomer / Silicone Element / Hemisphere

27‧‧‧Connecting/increasing parts

28‧‧‧Thin keyboard

281‧‧‧Upper casing

282‧‧‧ Lower case

29‧‧‧Key structure

DT‧‧‧Second distance

33‧‧‧Bevel

Claims (12)

A keyboard device, which is a computer keyboard, comprising: an upper casing, comprising a post, the post having a top portion, the top portion being a snap portion; a conductive film; a key cap (key top), comprising a bottom surface and an actuating member disposed in the bottom surface, the actuating member is disposed in the upper casing; a lower casing; and a soft elastic member located on the conductive film, The soft elastic member has an engaging portion for engaging the key cap so that the key cap does not jump off the soft elastic member when rebounding, and the key cap does not hit the buckle portion when rebounding. The device of claim 1, wherein the actuating member is disposed in the post, the actuating member is a first central stud, and the soft elastic member is a silicone rubber dome. Or a rubber hemisphere, the connecting portion is a raised portion, the device is a conventional keyboard or a thin keyboard, the bottom surface includes a recess, the first central stud is located in the recess, and the elevated portion is a first annular concave cylinder, and the first annular concave cylinder has a first central recess for holding the first central protruding post. The device of claim 2, wherein the first ring-shaped cylindrical body further comprises an opening and a slope, the cross-sectional area of the opening is gradually reduced along the inclined surface to the inside of the annular cylinder, and the first A central stud is placed in the central recess. The device of claim 2, wherein the keycap further comprises a latch, an outer portion and a side portion received on the bottom surface, the key cap being snapped to the card via the latch In the column, the top portion has a reduced thickness, and the reduced thickness causes the cassette to have at least one gap with the top portion. The top portion has a card slot thickness, and the outer portion has a depth of insertion. The device of claim 4, further comprising a first bottom pad on the conductive film for abutting the card when the card is moved down, the first pad making the side There is a gap between the portion and the top portion. The first bottom pad is a silicone pad or a vinyl acetate (EVA) cotton pad, and the silicone pad is formed integrally with or integrally formed with the silicone hemisphere. The device of claim 4, further comprising a second bottom pad on the post for abutting the side when the side is moved down, the second bottom pad making the side There is a first distance from the top. A keyboard device, which is a keyboard for a computer, comprising: an upper casing, comprising a post, the post having a top portion, the top portion being a buckle portion; and a key cap for responding to an operating pressure a vertical upward movement relative to the upper casing; a lower casing; and an elastic body disposed on the lower casing, the elastic body receiving the actuating pressure for retaining the keycap and waiting for the operating pressure When the spring cap is released and released, the key cap does not collide with the upper casing in the vertical direction, and the key cap does not hit the buckle portion when rebounding. The device of claim 7, further comprising a conductive film, The keycap includes a bottom surface and an actuating member disposed on the bottom surface, wherein the actuating member can perform the vertical movement in the upper casing to form a second annular concave cylinder and generate the actuating pressure. The actuation pressure is a vertical direct pressure, and the key cap does not directly collide with the upper casing. The elastic system comprises a half sphere and a second central protrusion connected to the top end of the hemisphere, and the second ring The concave cylinder has a second central recess for holding the second central stud. The device of claim 7, wherein the key cap comprises a bottom surface and an actuating member disposed on the bottom surface, the actuating member is a second annular concave cylinder, and the key cap further comprises a device disposed on the bottom surface, the device further includes a first bottom pad and a conductive film, the first bottom pad is located on the conductive film for abutting the card when the card is moved down . A keyboard device, which is a computer keyboard, has an upper casing and a lower casing, the upper casing has a stopping portion, and the keyboard device comprises: a key cap, which is vertically slidably disposed on the keyboard device And an elastic body disposed on the lower casing for retaining the keycap, and when the keycap rebounds after being pressed by the keycap, the keycap does not have any relationship with the upper casing or the lower casing It touches, and the key cap does not hit the stopper when it bounces back. The device of claim 10, wherein the elastic body comprises a tethered structure and a resilient structure, the stop portion has a stop surface, the height of the stop portion is less than a standard height, and the key cap Having a first central stud and an abutting top, wherein the abutting top has an abutting surface, and the abutting surface and the blocking surface have a second distance, the elastic system leaving the first central stud, The second distance is greater than zero when the keycap is bounced back. The device of claim 11, wherein the tethering structure retains a depth of the first central stud to determine the extent that the second distance is greater than zero.