TWM478192U - Resilient actuator and dome sheet, keyswitch and keyboard including such resilient actuator - Google Patents

Abstract

The invention discloses a resilient actuator and a dome sheet, a keyswitch and a keyboard including such resilient actuator. The resilient actuator according to a preferred embodiment of the invention includes a resilient dome, a mesa, a protruding boss and an actuating boss. The mesa is formed on a top of the resilient dome, and has a first top end. The protruding boss is formed at a center of the top of the resilient dome, and has a second top end. The second top end is higher than the first top end. The actuating boss is formed within the resilient dome.

Description

Elastic actuator and dome sheet, button and keyboard including the same

The present invention relates to a resilient actuator and a dome sheet, a keyswitch, and a keyboard including the elastic actuator, and in particular to having a peak stroke (peak) Travel) An increased structure of the elastic actuator to lift the pressing feel of the button on which the elastic actuator is mounted.

Please refer to FIG. 1A and FIG. 1B. 1A is a cross-sectional view of a keyboard 1 of the prior art. Figure 1B is a partial cross-sectional view of the button 10 of Figure 1A.

As shown in FIG. 1A, the keyboard 1 includes a seat body 13 and a plurality of buttons 10. The buttons 10 are generally disposed within the base 13 and expose their own keycaps 14 to the seat 13 for the user to press.

As shown in FIG. 1B, the button 10 includes a substrate 11, a membrane switch 12, a keycap 14, a scissor support device 16, and an elastic actuator 18. The scissor-type supporting device 16 is mounted on the substrate 11, and the substrate 11 is formed with a structure for assisting the fixing of the scissor-type supporting device 16. The keycap 14 is mounted on the scissor support device 16. The scissor support device 16 limits the vertical movement of the keycap 14 relative to the membrane switch 12 to move between the undepressed position and the depressed position.

The elastic actuator 18 is disposed on the membrane switch 12 and abuts against the keycap 14. The elastic actuator 18 includes a resilient dome 182 and Moving column 184. The elastomer 182 has an opening 186 and has a relatively high height. Actuating post 184 is formed within elastomer 182 and projects toward opening 186.

The resilient actuator 18 also includes a platform 188. Platform 188 is formed on top 183 of elastomer 182. The platform 188 abuts the lower surface 140 of the keycap 14. Typically, platform 188 has a recess 189.

An external force is applied to the keycap 14 to move the keycap 14 toward the membrane switch 12. The mechanical properties of the elastic actuator 18 affect the pressing feel of the button 10. The external force applied to the keycap 14 increases as the stroke (mainly the deformation of the platform 188 and the elastic body 182) increases. When the external force reaches the peak force, the stroke increases rapidly, causing the actuation column 184 to The moving membrane switch 12 is triggered. The stroke corresponding to the peak control force is defined as the peak stroke. The peak stroke provides the operator with a pressing feel.

The elastic actuator 18 shown in Fig. 1B has the same peak stroke as a typical elastic actuator, resulting in a poor hand feeling of the operator pressing the button 10. Low stroke button. The overall thinned low stroke button, if the elastic actuator 18 shown in Fig. 1B is mounted with a typical elastic actuator, the problem of poor hand pressing is more serious.

Therefore, one of the technical problems to be solved by the present invention is to provide an elastic actuator and a dome sheet, a button and a keyboard including the elastic actuator, and the elastic actuator of the present invention has a structure for increasing the peak stroke. .

The elastic actuator of the first preferred embodiment of the present invention can be disposed between the keycap and the bottom plate. The elastic actuator of the first preferred embodiment of the present invention comprises an elastomer, a platform, a stud, and an actuating post. The elastomer has an opening and a top. The platform is formed on top of the elastomer and has a first top end. The stud is formed at a central position of the top of the elastomer and has a second top end. In particular, the second top end is higher than the first top end. The actuation column is formed within the elastomer and extends toward the opening. When the key cap placed above the elastic actuator of the first preferred embodiment of the present invention moves toward the bottom plate, the key cap first contacts the second top end, so that the stud is deformed first, and the key cap is contacted again. The first top makes the platform begin to deform.

The elastic actuator of the second preferred embodiment of the present invention can be disposed between the keycap and the bottom plate. The elastic actuator of the second preferred embodiment of the present invention comprises an elastomer, a platform, a plurality of protrusions, and an actuating column. The elastomer has an opening and a top. The platform is formed on top of the elastomer and has a recess and a first top end. A plurality of protruding systems are formed on the first top end and symmetrically surround the center of the elastomer. There are preset spacings between the two adjacent protrusions. Each of the protrusions has a second top end, respectively. In particular, the second top end is higher than the first top end. The actuation column is formed within the elastomer and extends toward the opening. When the key cap placed above the elastic actuator of the second preferred embodiment of the present invention moves toward the bottom plate, the key cap first contacts the second top ends, so that the protruding bodies are deformed first, and then the key caps are The line touches the first top end, causing the platform to begin to deform.

The elastic actuator of the third preferred embodiment of the present invention can be disposed between the keycap and the bottom plate. The elastic actuator of the third preferred embodiment of the present invention comprises an elastomer, a platform, an annular body, and an actuating column. The elastomer has an opening and a top. The platform is formed on top of the elastomer and has a first top end. The annular system is formed on the platform, and the center of the annular body is the same as the center of the top. The annular body has a second top end. In particular, the second top end is higher than the first top end. The actuation column is formed within the elastomer and extends toward the opening. When the key cap disposed above the elastic actuator of the third preferred embodiment of the present invention moves toward the bottom plate, the key cap first contacts the second top end, so that the annular body is deformed first, and the key cap is contacted again. Go to the first top and start to deform the platform.

The elastic actuator of the fourth preferred embodiment of the present invention can be disposed between the keycap and the bottom plate. The elastic actuator of the fourth preferred embodiment of the present invention comprises an elastomer, a platform, a plurality of protrusions, and an actuating column. The elastomer has an opening and a top. The platform is formed on top of the elastomer and has a first top end. A plurality of protruding systems are formed on the platform and symmetrically surround the center of the elastomer. There are preset spacings between the two adjacent protrusions. Each of the protrusions has a second top end, respectively. In particular, the second top end is higher than the first top end. The actuation column is formed within the elastomer and extends toward the opening. When placed in the fourth of this creation is better When the upper key cap of the elastic actuator of the embodiment moves toward the bottom plate, the key cap first contacts the second top ends, so that the protrusions are deformed first, and then the key cap contacts the first top end to make the platform start. Deformation.

One of the preferred embodiments of the present invention comprises a flexible actuator, a substrate, a membrane switch, a keycap, and a support device of the present invention. The film opening relationship is disposed on the substrate. The supporting device is disposed between the substrate and the keycap, and is rotatably connected to the lower surface of the keycap and the substrate, respectively. The support device limits the movement of the keycap between the unpressed position and the pressed position. The elastic actuator is disposed above the membrane switch and abuts the keycap. When the keycap is not pressed, the resilient actuator supports the keycap in the undepressed position. When the keycap is pressed by an external force to deform the elastic body, the keycap moves to the pressing position, causing the actuating column to actuate the membrane switch to trigger.

A dome-shaped sheet of a preferred embodiment of the present invention is suitable for use in a keyboard. The dome body sheet of the present invention comprises a substrate, a first elastic actuator, and a second elastic actuator. The first elastic actuator is formed on the substrate. A second elastic actuator is formed on the substrate. The first elastic actuator and the second elastic actuator are one of various preferred embodiments of the elastic actuators of the present invention, and are identical in structure, resulting in the first elastic actuator and the second elastic actuator. Have the same mechanical properties, that is, have the same peak stroke.

A preferred embodiment of the keyboard of the present invention includes a substrate, a first button, and a second button. The first button includes a first membrane switch, a first keycap first support device, and a first elastic actuator. The first film opening relationship is disposed on the substrate. The first supporting device is disposed between the substrate and the first keycap. The first support device limits movement of the first keycap between the first un-pressed position and the first depressed position. The first elastic actuator is disposed on the first membrane switch and abuts against the first keycap. The second button includes a second membrane switch, a second keycap, a second support device, and a second elastic actuator. The second film opening relationship is disposed on the substrate. The second supporting device is disposed between the substrate and the second keycap. The second support device limits movement of the second keycap between the second un-pressed position and the second depressed position. The second elastic actuator is disposed on the second membrane switch and abuts against the second keycap. First elastic actuator and second elastic The actuators are all one of the various preferred embodiments of the elastic actuators of the present invention, and are identical in structure, so that the first elastic actuator and the second elastic actuator have the same mechanical properties, that is, have the same Peak trip.

Unlike the prior art, the elastic actuator of the present invention has a structure that increases the peak stroke. Therefore, the button of the elastic actuator of the present invention is mounted to enhance its pressing feel.

The advantages and spirit of the present invention can be further understood by the following embodiments and the drawings.

1‧‧‧ keyboard

182‧‧‧ Elastomers

206‧‧‧around

10‧‧‧ button

183‧‧‧ top

22‧‧‧ platform

11‧‧‧Substrate

184‧‧‧moving column

222‧‧‧ dent

12‧‧‧ Membrane switch

186‧‧‧ openings

226‧‧‧ first top

13‧‧‧ body

188‧‧‧ platform

24‧‧‧ stud

14‧‧‧Key Cap

189‧‧‧ dent

242‧‧‧second top

140‧‧‧lower surface

2‧‧‧Elastic actuator

26‧‧‧Working column

16‧‧‧ Scissor support Device

20‧‧‧ Elastomers

28‧‧‧ gap

202‧‧‧ openings

29‧‧‧Key Cap

18‧‧‧Elastic actuator

204‧‧‧ top

3‧‧‧Elastic actuator

30‧‧‧ Elastomers

504‧‧‧ top

66b‧‧‧second support device

302‧‧‧ first opening

Around 506‧‧

304‧‧‧ top

52‧‧‧ platform

Around 306‧‧

526‧‧‧ first top

32‧‧‧ platform

54‧‧‧ protrusions

322‧‧‧ dent

542‧‧‧second top

324‧‧‧ second opening

56‧‧‧Working column

326‧‧‧ first top

58‧‧‧ gap

34‧‧‧ protrusions

R2‧‧‧ distance

342‧‧‧second top

D4‧‧‧ outside diameter

36‧‧‧Working column

PT1, PT2, PT3, PT4‧‧‧ peak trip

38‧‧‧ gap

R1‧‧‧ distance

6‧‧‧ buttons

D1‧‧‧ outside diameter

60‧‧‧Substrate

4‧‧‧Elastic actuator

62‧‧‧ Membrane switch

40‧‧‧ Elastomers

64‧‧‧Key Cap

402‧‧‧ openings

640‧‧‧ lower surface

404‧‧‧ top

66‧‧‧Support device

Around 406‧‧

7‧‧‧Shelf body sheet

42‧‧‧ platform

70‧‧‧Substrate

426‧‧‧ first top

3a‧‧‧First Elastic Actuator

44‧‧‧ annular body

3b‧‧‧Second elastic actuator

442‧‧‧second top

8‧‧‧ keyboard

46‧‧‧moving column

6a‧‧‧First button

48‧‧‧ gap

6b‧‧‧second button

D2‧‧‧ first outer diameter

62a‧‧‧First membrane switch

D3‧‧‧second outer diameter

62‧‧‧Second membrane switch

5‧‧‧Elastic actuator

64a‧‧‧First key cap

50‧‧‧ Elastomers

64b‧‧‧Second keycap

502‧‧‧ openings

66a‧‧‧First support device

Figure 1A is a cross-sectional view of a prior art keyboard.

Figure 1B is a partial cross-sectional view of the keyboard of Figure 1A.

Figure 2 is an external view of the elastic actuator of the first preferred embodiment of the present invention.

3A is a cross-sectional view of the elastic actuator of FIG. 2 taken along line A-A and in a state of being unstressed by an external force.

Fig. 3B is a cross-sectional view of the elastic actuator of Fig. 2 taken along line A-A and in a state of being pressed by an external force.

Figure 4 is a perspective view of an elastic actuator of a second preferred embodiment of the present invention.

Figure 5 is a cross-sectional view of the elastic actuator of Figure 4 taken along line B-B.

Fig. 6 is a perspective view showing the elastic actuator of the third preferred embodiment of the creation.

Figure 7 is a cross-sectional view of the elastic actuator of Figure 6 taken along line C-C.

Figure 8 is a perspective view of an elastic actuator of a fourth preferred embodiment of the present invention.

Figure 9 is a cross-sectional view of the elastic actuator of Figure 8 taken along line D-D.

Figure 10 is an external force-stroke characteristic diagram of the elastic actuator of the first preferred embodiment of the present invention and the control elastic actuator.

Figure 11 is a diagram showing the external force-stroke characteristics of the elastic actuator of the third preferred embodiment of the present invention and the control elastic actuator.

Figure 12 is a partial cross-sectional view of a button of one preferred embodiment of the present invention.

Figure 13 is a partial perspective view of a dome sheet of a preferred embodiment of the present invention.

Figure 14 is a partial cross-sectional view of the keyboard of one preferred embodiment of the present invention.

Please refer to FIG. 2, FIG. 3A and FIG. 3B. 2 is a perspective view schematically showing the elastic actuator 2 of the first preferred embodiment of the present invention. Fig. 3A is a cross-sectional view taken along line A-A of the elastic actuator 2 of Fig. 2 when it is not pressed by an external force. Fig. 3B is another cross-sectional view taken along line A-A of the elastic actuator 2 of Fig. 2 when it is pressed by an external force. The elastic actuator 2 of the first preferred embodiment of the present invention can be disposed between the keycap 29 and the bottom plate. In FIGS. 3A and 3B, only a partial cross-sectional view of the keycap 29 is shown, and the bottom plate is not shown.

As shown in FIGS. 2, 3A and 3B, the elastic actuator 2 of the first preferred embodiment of the present invention comprises an elastic body 20, a platform 22, a stud 24 and an actuating column 26. In practice, the elastomer 20, the platform 22, the studs 24, and the actuating post 26 can be integrally formed to form the resilient actuator 2. In FIGS. 3A and 3B, dashed lines are drawn between the members and structures of the elastic actuator 2 to be partitioned.

The elastomer 20 has an opening 202 and a top portion 204. The platform 22 is formed on the top 204 of the elastomer 20 and has a first top end 226 and a recess 222. The stud 24 is formed within the recess 222 and corresponds to the center of the top 204 of the elastomer 20 and has a second top end 242. In particular, the position of the second tip 242 in space is higher than the first tip 226. The actuating column 26 is formed on the elastomer Within 20 and extending toward opening 202. As shown in FIG. 3B, when the keycap 29 placed above the elastic actuator 2 of the present invention is pressed by the external force to move toward the bottom plate, the key cap 29 first contacts the second top end 242, so that the stud 24 is deformed first. The keycap 29 is again contacted to the first top end 226 to cause the platform 22 to begin to deform. Thereby, the elastic actuator 2 of the first preferred embodiment of the present invention has a significantly increased peak stroke as compared with the prior art elastic actuator.

Further, the elastic actuator 2 of the first preferred embodiment of the present invention has an elastic body 20 further having a notch 28. A notch 28 is formed in the perimeter 206 of the opening 202. When the elastic actuator 2 of the first preferred embodiment of the present invention is mounted on a button, the notch 28 serves as a vent hole. The function of the vent hole is that when the elastic body 20 is deformed, gas can be discharged from the vent hole. When the deformed elastomer 20 returns, gas is drawn in from the vent.

Please refer to Figure 4 and Figure 5. Fig. 4 is a perspective view schematically showing the elastic actuator 3 of the second preferred embodiment of the present invention. Figure 5 is a cross-sectional view of the elastic actuator 3 of Figure 4 taken along line B-B. The elastic actuator 3 of the present invention can be disposed between the keycap and the bottom plate (not shown in FIGS. 4 and 5).

As shown in FIGS. 4 and 5, the elastic actuator 3 of the second preferred embodiment of the present invention comprises an elastic body 30, a platform 32, a plurality of protrusions 34, and an actuating column 36. In practice, the elastomer 30, the platform 32, the plurality of protrusions 34, and the actuating post 36 can be integrally formed to form the elastic actuator 3. In FIG. 5, dotted lines are drawn between the members and structures of the elastic actuator 3 to be partitioned.

The elastomer 30 has a first opening 302 and a top portion 304. The platform 32 is formed on the top 304 of the elastomer 30 and has a recess 322, a second opening 324, and a first tip 326. A plurality of protrusions 34 are formed on the first top end 326 and symmetrically surround the center of the elastomer 30. Any two of the closest protrusions 34 have the same preset spacing. Each of the protrusions 34 has a second top end 342, respectively. Because the protrusions 34 are formed on the first top end 326, the second top end 342 is necessarily positioned higher in the space than the first top end 326. Actuation column 36 It is formed within the elastomer 30 and extends toward the first opening 302. When the key cap disposed above the elastic actuator 3 of the second preferred embodiment of the present invention moves toward the bottom plate, the key cap first contacts the second top ends 342 to deform the protrusions 34 first. The deformed protrusion 34 is applied to the first top end 326 to exceed a predetermined value, and then the platform 32 begins to deform. Thereby, the elastic actuator 3 of the second preferred embodiment of the present invention has a significantly increased peak stroke as compared with the prior art elastic actuator.

In one embodiment, as shown in FIG. 5, a plurality of protrusions 34 have a distance r1 from the center of the elastic body 30, and the top portion 304 of the elastic body 30 has an outer diameter d1 which is smaller than the outer diameter d1. Half of it.

Further, the elastic actuator 3 of the second preferred embodiment of the present invention has an elastic body 30 further having a notch 38. The gap 38 has the same function as the notch 28 of the first preferred embodiment, and will not be described herein.

Please refer to Figure 6 and Figure 7. Fig. 6 is a perspective view schematically showing the elastic actuator 4 of the third preferred embodiment of the present invention. Figure 7 is a cross-sectional view of the elastic actuator 4 of Figure 6 taken along line C-C. The elastic actuator 4 of the third preferred embodiment of the present invention can be disposed between the keycap and the bottom plate (not shown in FIGS. 6 and 7).

As shown in FIGS. 6 and 7, the elastic actuator 4 of the third preferred embodiment of the present invention comprises an elastic body 40, a platform 42, an annular body 44, and an actuating column 46. In practice, the elastomer 40, the platform 42, the annular body 44, and the actuating post 46 can be integrally formed to form the resilient actuator 4. In FIG. 7, a dotted line is drawn between the members and structures of the elastic actuator 4 to be partitioned.

The elastomer 40 has an opening 402 and a top 404. The platform 42 is formed on the top 404 of the elastomer 40 and has a first top end 426. The annular body 44 is formed on the platform 42 and the center of the annular body 44 is the same as the center of the top portion 404. The annular body 44 has a second top end 442. Because the annular body 44 is formed on the first top end 426 of the platform 42, the second top end 442 is necessarily positioned higher in space than the first top end 426. Actuating post 46 is formed within elastomer 40 and extends toward opening 402. When placed in the third preferred embodiment of the present invention, the elastic actuator 4 When the upper keycap moves toward the bottom plate, the key cap first contacts the second top end 442, so that the annular body 44 is deformed first, and when the deformed protruding body 44 is applied to the first top end 426, the force exceeds a preset value, and then The platform 42 begins to deform. Thereby, the elastic actuator 4 of the third preferred embodiment of the present invention has a significantly increased peak stroke as compared with the prior art elastic actuator.

In one embodiment, the top portion 404 of the elastomer 40 has a first outer diameter d2. The annular body 44 has a second outer diameter d3 which is smaller than the first outer diameter d2.

Further, the elastic actuator 4 of the third preferred embodiment of the present invention has an elastic body 40 further having a notch 48. The gap 48 has the same function as the notch 28 of the first preferred embodiment, and will not be described herein.

Please refer to Figure 8 and Figure 9. Fig. 8 is a perspective view schematically showing an elastic actuator 5 of a fourth preferred embodiment of the present invention. Figure 9 is a cross-sectional view of the elastic actuator 5 of Figure 8 taken along line D-D. The elastic actuator 5 of the fourth preferred embodiment of the present invention can be disposed between the keycap and the bottom plate (not shown in Figs. 8 and 9).

As shown in FIGS. 8 and 9, the elastic actuator 5 of the fourth preferred embodiment of the present invention comprises an elastic body 50, a platform 52, a plurality of protrusions 54, and an actuating column 56. In practice, the elastomer 50, the platform 52, the plurality of protrusions 54 and the actuating post 56 can be integrally formed to form the elastic actuator 2. In FIG. 9, the respective members and structures of the elastic actuator 5 are shown with broken lines to be separated.

The elastomer 50 has an opening 502 and a top 504. The platform 52 is formed on the top 504 of the elastomer 50 and has a first top end 526. A plurality of protrusions 54 are formed on the platform 52 and symmetrically surround the center of the elastomer 50. Any two of the closest protrusions 54 have the same preset spacing. Each of the protrusions 54 has a second top end 542, respectively. Because the projections 54 are formed on the first top end 526 of the platform 52, the second tips 542 are necessarily positioned higher in space than the first top end 526. Actuating post 56 is formed within elastomer 50 and extends toward opening 502. When placed in the fourth preferred embodiment of the present invention, the elastic actuator 5 When the upper keycap moves toward the bottom plate, the key cap first contacts the second top ends 542, so that the protrusions 54 are deformed first, and when the deformed protrusions 54 are applied to the first top end 526, the force exceeds a preset value. Then the platform 52 begins to deform. Thereby, the elastic actuator 5 of the fourth preferred embodiment of the present invention has a significantly increased peak stroke as compared with the prior art elastic actuator.

In one embodiment, as shown in FIG. 9, a plurality of protrusions 54 have a distance r2 from the center of the elastomer 50. The top 504 of the elastomer 50 has an outer diameter d4 that is less than half of the outer diameter d4.

Further, the elastomer 50 also has a notch 58. A notch 58 is formed on the perimeter 506 of the opening 502. When the elastic actuator 5 of the fourth preferred embodiment of the present invention is mounted on the button, the notch 58 functions as the notch 28 of the first preferred embodiment, and details are not described herein.

See 10. Figure 10 is an external force-stroke of the elastic actuator 2 (including the stud 24) of the first preferred embodiment of Figure 2, compared to the prior art elastic actuator 10 of Figure 1B (without the stud 24) Characteristic map. It can be confirmed from Fig. 10 that when the key cap is pressed in the 0 to 0.2 mm stroke, only the stud 24 is deformed, and the elastic body 20 has not yet begun to be deformed, so the stroke of the stroke is small. When the keycap is pressed in the stroke of 0.2 mm to 0.7 mm, the elastic body 20 starts to deform but has not yet reached the collapse point of the elastic body 20, so the stroke of the stroke is large. The elastic actuator 2 having the stud 24 thus has a peak stroke PT2 that is significantly greater than the peak stroke PT1 of the collimating elastic actuator without the stud 24.

Please refer to 11. Figure 11 is an external force-stroke characteristic of the elastic actuator 4 of the third preferred embodiment of Figure 6 in actual operation compared to the prior art elastic actuator 10 of Figure 1B (without the annular body 44). Figure. It can be confirmed from Fig. 11 that, with a similar concept, a softer elastomer (annular body 44) is additionally connected in series above the elastomer 40, so that the elastic actuator 4 having the annular body 44 has a peak stroke PT4 which is significantly larger than that without a ring. The peak stroke PT3 of the body 24 against the elastic actuator.

Please refer to Figure 12. Figure 12 is a schematic cross-sectional view schematically showing One of the present preferred embodiments is a button 6 of a particular embodiment. The button 6 of this creation is suitable for being mounted on a keyboard.

As shown in FIG. 12, the present button 6 includes the elastic actuator 3, the substrate 60, the membrane switch 62, the keycap 64, and the support device 66 of the present invention. The elastic actuator disposed in the button 6 of the present creation may be any one of the elastic actuators as shown in FIGS. 2 to 9. For convenience of explanation, the elastic actuator 4 shown in FIG. 12 is represented by the elastic actuator 3 shown in FIG. 4 and FIG. 5, but is not limited thereto.

The membrane switch 62 is disposed on the substrate 60. The keycap 64 has a lower surface 640. The support device 66 is disposed between the substrate 60 and the keycap 64 and is rotatably coupled to the lower surface of the keycap 64 and to the substrate 60, respectively. The substrate 60 and the lower surface 640 of the keycap 64 are formed to assist in fixing the support structure 66. The support device 66 limits the vertical movement of the keycap 64 relative to the membrane switch 62 to move between the undepressed position and the depressed position. As shown in FIG. 12, the support structure 66 may be a scissor structure, but is not limited thereto.

The elastic actuator 3 is disposed above the membrane switch 62, and the second distal end 342 of the projections 34 abuts against the lower surface 640 of the keycap 64. When the keycap 64 is not pressed, the elastic actuator 3 supports the keycap 64 in the unpressed position. When the key cap 64 is pressed by the external force, the key cap 64 first contacts the second top end 342, and after the protrusion 34 is deformed, the key cap 64 contacts the first top end 326 again, so that the platform 32 and the elastic body 30 start to deform. The keycap 64 is quickly moved to the depressed position, causing the actuating post 36 to actuate the membrane switch 62 to trigger. Thereby, the button 6 of the creation significantly enhances the pressing feel. In FIG. 12, elements having the same reference numerals as those in FIGS. 4 and 5 have the same or similar structures and functions, and will not be further described herein.

Please refer to Figure 13. Figure 13 is a partial perspective view schematically showing a dome sheet 7 of a preferred embodiment of the present invention. The dome body sheet 7 of the present invention is suitable for a keyboard.

As shown in Fig. 13, the dome piece 7 of the present invention comprises a base material 70, a first elastic actuator 3a, and a second elastic actuator 3b. First elastic actuator 3a Both the second elastic actuator 3b and the second elastic actuator 3b are formed on the substrate 70. In particular, the first elastic actuator 3a and the second elastic actuator 3b are one of various elastic actuators of various preferred embodiments of the present invention, that is, the elasticity shown in FIGS. 2 to 9 Any of the actuators. For convenience of description, the first elastic actuator 3a and the second elastic actuator 3b shown in FIG. 13 are the same as the elastic actuator 3 shown in FIGS. 4 and 5, but are not limited thereto. Moreover, the outer dimensions of the first elastic actuator 3a and the second elastic actuator 3b are the same, so that the first elastic actuator 3a and the second elastic actuator 3b have the same mechanical properties, that is, have the same External force - stroke characteristics, peak travel. The components in FIG. 13 having the same reference numerals as those in FIGS. 4 and 5 have the same or similar structures and functions, and will not be further described herein.

Please refer to Figure 14. Figure 14 is a partial cross-sectional view schematically showing a keyboard 8 of a preferred embodiment of the present invention.

As shown in FIG. 14, the keyboard 8 of the present invention includes a substrate 60, a first button 6a, and a second button 6b. The structures of the first button 6a and the second button 6b are the same as those of the button 6 shown in FIG. 12, but are not limited thereto.

The first button 6a includes a first membrane switch 62a, a first keycap 64a first support device 66a, and a first elastic actuator 3a. The first membrane switch 62a is disposed on the substrate 60. The first supporting device 66a is disposed between the substrate 60 and the first keycap 64a. The first support device 66a restricts movement of the first keycap 64a between the first un-pressed position and the first depressed position. The first elastic actuator 3a is disposed on the first membrane switch 62a and abuts against the first keycap 64a.

The second button 6b includes a second membrane switch 62b, a second keycap 64b, a second support device 66b, and a second elastic actuator 3b. The second membrane switch 62b is disposed on the substrate 60. The second supporting device 66b is disposed between the substrate 60 and the second keycap 64b. The second support device 66b limits movement of the second keycap 64b between the second un-pressed position and the second depressed position. The second elastic actuator 3b is disposed on the second membrane switch 62b and abuts against the second keycap 64b. In particular, the first elastic actuator 3a and the second elastic actuator 3b are various preferred embodiments of the present invention. One of the elastic actuators is any one of the elastic actuators as shown in FIGS. 2 to 9. For convenience of description, the first elastic actuator 3a and the second elastic actuator 3b shown in FIG. 14 are the same as the elastic actuator 3 shown in FIGS. 4 and 5, but are not limited thereto. Moreover, the outer dimensions of the first elastic actuator 3a and the second elastic actuator 3b are the same, so that the first elastic actuator 3a and the second elastic actuator 3b have the same mechanical properties, that is, have the same External force - stroke characteristics, peak travel. Thereby, the first button 6a and the second button 6b have the same pressing feel, and both of them significantly enhance their pressing feel. The components in FIG. 14 having the same reference numerals as those in FIGS. 4 and 5 have the same or similar structures and functions, and will not be further described herein.

The features and spirit of the present invention are more clearly described in the above detailed description of the preferred embodiments, and are not intended to limit the scope of the present invention. On the contrary, the purpose is to cover all kinds of changes and equivalence arrangements within the scope of the patent application to which the present invention is intended. Therefore, the scope of the patent application filed by this creator should be interpreted broadly based on the above description so that it covers all possible changes and equivalent arrangements.

2‧‧‧Elastic actuator

20‧‧‧ Elastomers

202‧‧‧ openings

204‧‧‧ top

206‧‧‧around

22‧‧‧ platform

222‧‧‧ dent

226‧‧‧ first top

24‧‧‧ stud

242‧‧‧second top

26‧‧‧Working column

28‧‧‧ gap

29‧‧‧Key Cap

Claims (15)

An elastic actuator is disposed between a keycap and a bottom plate, and includes: an elastic body having an opening and a top; a platform formed on the top and having a first top end; a protruding post formed at a central position of the top portion and having a second top end, wherein the second top end is higher than the first top end; and an actuating post formed in the elastic body and facing the opening Extending; wherein when the key cap placed above the elastic actuator moves toward the bottom plate, the key cap contacts the second top end first, and after the protruding post is deformed, the key cap contacts the same The first top makes the platform begin to deform. The elastic actuator of claim 1, wherein the elastic body further has a notch formed on a periphery of one of the openings. The elastic actuator of claim 1, wherein the platform further has a recess, and the stud is formed in the recess. An elastic actuator is disposed between a keycap and a bottom plate, and includes: an elastic body having an opening and a top; a platform formed on the top and having a recess and a first a top end; a plurality of protrusions formed on the first top end and symmetrically surrounding a center of the elastic body, each of the adjacent protrusions having a predetermined spacing, each of the protrusions having a a second top end, and the second top end is higher than the first top end; and an actuating post is formed in the elastomer and extends toward the opening; Wherein, when the key cap placed above the elastic actuator moves toward the bottom plate, the key cap first contacts the second top ends, and after the protrusions are first deformed, the deformed protrusions are applied to The platform makes the platform begin to morph. The elastic actuator of claim 4, wherein the plurality of protrusions have a distance from the center of the elastic body, the top of the elastic body having an outer diameter that is smaller than the outer diameter half. The elastic actuator of claim 4, wherein the elastomer further has a notch formed on a periphery of one of the openings. An elastic actuator is disposed between a keycap and a bottom plate, and includes: an elastic body having an opening and a top; a platform formed on the top and having a first top end; An annular body is formed on the platform, and a center of one of the annular bodies is identical to a center of the top portion, the annular body has a second top end, and the second top end is higher than the first a top end; and an actuating post formed in the elastomer body and extending toward the opening; wherein the keycap first contacts the second top end when the keycap placed above the elastic actuator moves toward the bottom plate After the annular body is first deformed, the deformed annular body applies force to the platform to start deformation of the platform. The elastic actuator of claim 7, wherein the top of the elastic body has a first outer diameter, and the annular body has a second outer diameter, the second outer diameter being smaller than the first outer diameter. The elastic actuator of claim 7, wherein the elastomer further has a notch formed on a periphery of one of the openings. An elastic actuator can be disposed between a keycap and a bottom plate and includes: An elastomer having an opening and a top portion; a platform formed on the top portion and having a first top end; a plurality of protrusions formed on the platform and symmetrically surrounding one of the elastic bodies Center, the two adjacent protrusions have a predetermined spacing between each, each protrusion has a second top end, and the second top ends are higher than the first top end; and an actuating column is formed at The elastic body extends toward the opening; wherein when the key cap is placed above the elastic actuator to move to the bottom plate, the key cap first contacts the second top ends, so that the protruding bodies are deformed first The deformed protrusion exerts a force on the platform to cause the platform to begin to deform. The elastic actuator of claim 10, wherein the plurality of protrusions have a distance from the center of the elastic body, the top of the elastic body having an outer diameter that is smaller than the outer diameter half. The elastic actuator of claim 10, wherein the elastomer further has a notch formed on a periphery of one of the openings. A button comprising: an elastic actuator according to any one of claims 1 to 12; a substrate; a membrane switch disposed on the substrate; a keycap; and a supporting device disposed on the button Between the substrate and the keycap, the supporting device restricts movement of the keycap between an unpressed position and a pressed position; wherein the elastic actuator is disposed on the membrane switch and abuts the keycap . A dome sheet for a keyboard, comprising: a substrate; a first elastic actuator formed on the substrate; and a second elastic actuator formed on the substrate The first elastic actuator and the second elastic actuator are both elastic actuators according to any one of claims 1 to 12, and the outer dimensions are the same, so that the first elasticity The actuator has the same mechanical properties as the second elastic actuator. A keyboard includes: a substrate; a first button, comprising: a first membrane switch disposed on the substrate; a first key cap; a first supporting device disposed on the substrate and the first button Between the caps, the first supporting device limits movement of the first keycap between a first unpressed position and a first pressing position; and a first elastic actuator is disposed on the first membrane switch And a second button, comprising: a second membrane switch disposed on the substrate; a second key cap; a second supporting device disposed on the substrate Between the second keycaps, the second supporting device limits movement of the second keycap between a second unpressed position and a second pressed position; a second elastic actuator is disposed on the second membrane switch and abuts the second keycap; wherein the first elastic actuator and the second elastic actuator are both as claimed in claim 1 The elastic actuator of any one of 12, and the outer dimensions are the same, such that the first elastic actuator has the same mechanical properties as the second elastic actuator.