TW202027114A - Keyswitch structure - Google Patents

Abstract

The present invention provides a keyswitch structure including: a keyswitch supporting shaft, a shrapnel, a keyswitch pedestal and a keycap. While the keycap is pressed by an external force, the keyswitch supporting shaft drives the shrapnel to move. The push portion of the keyswitch pedestal pushes a resilient portion of the shrapnel to make it deformed elastically. While the push portion passes across the push portion, the push portion recovers elastically to swing and hit the inner surface of a groove of the keyswitch pedestal to generate sound.

Description

Button structure

The present invention relates to a structure of an input device, especially a key structure.

In today's society, the use of electronic products has become an indispensable part of life. Food, clothing, shelter, transportation, education, and entertainment are all related to electronic products. Generally speaking, electronic products are equipped with key structures. Among them, mechanical keyboards are widely loved by consumers due to their good pressing feel and percussive sound. However, the existing mechanical keyboard has a large number of components, which makes its structure too complicated and difficult to assemble.

Therefore, how to provide a key structure that is simple in structure and easy to assemble, and at the same time has a sense of passage and percussion sound of a mechanical keyboard, is a technical problem to be solved by the present invention.

The main purpose of the present invention is to provide a key structure that is simple in structure and easy to assemble, and has a sense of passage and percussion sound of a mechanical keyboard at the same time.

To achieve the foregoing objective, the present invention provides a button structure, including: The key support shaft includes: an accommodating groove; and an opening part communicating with the accommodating groove; an elastic piece arranged in the accommodating groove, the elastic piece has an elastic part and partially penetrates the opening; the key seat includes: a key groove, The key support shaft is arranged in the key groove so as to be movable up and down; and the pushing part is arranged on the inner surface of the key groove, and the pushing part corresponds to the elastic part; and the key cap is combined with the key supporting shaft; When the key cap is pressed, the pushing part pushes the elastic part to make it elastically deformed, and then the elastic part surpasses the pushing part to elastically recover, and the elastic part swings and hits the inner surface of the key groove to generate a sound.

In the above preferred embodiment, it further includes a switch module, the switch module is arranged at the bottom of the button base, the switch module includes a film circuit board and an elastic body arranged on the film circuit board, and the elastic body is located in the button groove in.

In the above preferred embodiment, when the key cap is pressed by an external force, the key support shaft presses the elastic body, so that the switch module generates a corresponding key signal.

In the above-mentioned preferred embodiment, when the external force is released, the elastic body elastically recovers and provides an elastic restoring force to the key support shaft, and the elastic part hits during the reset process of the key support shaft and crosses the pushing part to generate a sound.

In the above preferred embodiment, the opening includes a first opening and a second opening.

In the above preferred embodiment, the elastic portion includes a first elastic arm and a second elastic arm, the first elastic arm part passes through the first opening, and the second elastic arm part passes through the second opening.

In the above preferred embodiment, the pushing portion includes a first pushing projection and a second pushing projection, and the first pushing projection and the second pushing projection each have an inclined surface.

In the above preferred embodiment, when an external force presses the keycap, The first elastic arm and the second elastic arm respectively abut against the inclined surfaces of the first and second pushing projections, and move along the inclined surfaces to be elastically deformed.

In the above-mentioned preferred embodiment, the elastic piece has a fixing piece, and the fixing piece is connected with the first elastic arm and the second elastic arm, and the fixing piece is arranged in the accommodating groove to fix the elastic piece.

In the above-mentioned preferred embodiment, the outer surface of the key support shaft has a key protrusion, and the inner surface of the key groove has a key stop block corresponding to the key protrusion, and the key protrusion is used to abut the key stop stop. Up, stop the key support shaft from moving downwards.

In the above preferred embodiment, the key bump is located above the opening.

In the above preferred embodiment, the key stop block is located below the pushing part.

In the above preferred embodiment, the key cap has a first engaging structure, the key support shaft has a second engaging structure, and the first engaging structure is engaged with the second engaging structure so that the key cap is detachably combined To the key support shaft.

F‧‧‧External force

S‧‧‧inclined surface

10‧‧‧Keycap

101‧‧‧The first engagement structure

20‧‧‧Key support shaft

201‧‧‧Second engagement structure

202‧‧‧Containing Slot

203‧‧‧Button bump

204‧‧‧Opening

204L‧‧‧First opening

204R‧‧‧Second opening

205‧‧‧locking ribs

30‧‧‧Key Holder

31‧‧‧Key Slot

311‧‧‧Key stop block

312‧‧‧Department

312L‧‧‧First push bump

312R‧‧‧Second push bump

40‧‧‧Switch Module

41‧‧‧Thin Film Circuit Board

42‧‧‧Elastomer

50‧‧‧Shrapnel

501‧‧‧Fixed part

502‧‧‧Elasticity

502L‧‧‧First elastic arm

502R‧‧‧Second Arm

Figure 1: is a three-dimensional schematic diagram of the key structure of the present invention; Figure 2A: is a perspective exploded view of the key structure provided by the present invention; Figure 2B: is a three-dimensional decomposition view of the key structure provided by the present invention from another perspective Figure; and Figure 3: is a schematic diagram of the action of the button structure of the present invention.

The advantages and features of the present invention and the method to achieve it will be referred to exemplary The embodiments and drawings are described in more detail for easier understanding. However, the present invention can be implemented in different forms and should not be understood to be limited to the embodiments set forth herein. On the contrary, for those with ordinary knowledge in the technical field, the provided embodiments will make this disclosure more thorough, comprehensive and complete to convey the scope of the present invention.

First, please refer to FIG. 1, which is a three-dimensional schematic diagram of the key structure of the present invention. The key structure 1 of the present invention includes: a key cap 10, a key support shaft 20, a key seat 30, and a switch module 40.

Next, please refer to FIGS. 2A and 2B. FIG. 2A is a three-dimensional schematic diagram of the key structure provided by the present invention from one perspective; FIG. 2B is a three-dimensional schematic diagram of the key structure provided by the present invention from another perspective. In FIGS. 2A and 2B, the lower surface of the key cap 10 of the key structure 1 has a first engaging structure 101. The key support shaft 20 has: a second engaging structure 201, an accommodation groove 202, a key protrusion 203, an opening 204 and an engaging rib 205. The second engaging structure 201 is located at the top end of the key support shaft 20 and is used to combine with the first engaging structure 101 of the key cap 10, so that the key cap 10 is detachably coupled to the key support shaft 20, so that the user can The key caps with different colors, shapes or materials can be replaced according to needs or preferences. In this embodiment, the first engaging structure 101 is a cross-shaped groove, and the second engaging structure 201 is a cross-shaped shaft Rod.

The accommodating groove 202 is disposed inside the key support shaft 20, and the opening 204 is communicated with the accommodating groove 202. In this embodiment, the opening 204 includes a first opening 204L and a second opening 204R, and the key bump 203 is disposed on the outer surface of the key support shaft 20 and located above the opening 204.

The accommodating groove 202 is used for accommodating an elastic piece 50. The elastic piece 50 has a fixed portion 501 and an elastic portion 502 connected to the fixed portion 501. In this embodiment, the fixing portion 501 is used for engaging with the receiving groove 202 to thereby fix the elastic piece 50 in the receiving groove 202; the elastic portion 502 includes a first elastic arm connected to the fixing portion 501 502L and second elastic arm 502R. When the elastic piece 50 is fixed in the receiving groove 202, the first elastic arm 502L partially penetrates the first opening 204L; the second elastic arm 502R partially penetrates the second opening 204R. Although this embodiment only proposes the implementation of the elastic part 502 with two elastic arms However, in actual applications, the number of elastic arms can be adjusted according to the requirements of the button pressing feel during button making. For example, if you need a lighter pressing feel, you can set one elastic arm; if you need a heavier one The pressing feel can be provided with more than two elastic arms, and is not limited to the implementation manner proposed by the present invention. In addition, the elastic restoring force of the elastic piece 50 can be adjusted by the replacement of materials, so as to adjust the feel of the button pressing.

Please continue to refer to FIG. 2A, the button base 30 has a button groove 31. The key groove 31 is used for accommodating the key support shaft 20, and the engaging rib 205 of the key support shaft 20 is used for engaging with the inner surface of the key groove 31, so that the key support shaft 20 is disposed in the key groove so as to be movable up and down. 31 among. In addition, the inner surface of the key groove 31 has a key stop block 311 corresponding to the key protrusion 203 and a pushing part 312 corresponding to the elastic part 502. In this embodiment, the button stop block 311 is located below the pushing portion 312, and the pushing portion 312 has a first pushing protrusion 312L corresponding to the first elastic arm 502L and a corresponding second elastic arm 502R. The second pushes against the bump 312R. When assembling the key structure 1, the shrapnel 50 and the key support shaft 20 can be separately assembled into individual key shaft semi-finished products, and then assembled with the key base 30 as a whole, which can simplify the assembly procedure. On the other hand, when the key structure 1 needs to be assembled upside down, for example, when the switch module 40 is installed, since the key support shaft 20 is engaged with the key groove 31 by the engaging rib 205, it can be avoided when it is turned upside down. The key support shaft 20 falls out from the key base 30, and the efficiency of assembling the key structure 1 can be further improved.

2B, the first pushing protrusion 312L and the second pushing protrusion 312R of the pushing portion 312 each have an inclined surface S, so that when the key support shaft 20 moves downward and drives the elastic piece 50 to shift, the pushing The abutting portion 312 pushes against the elastic portion 502, so that the first elastic arm 502L and the second elastic arm 502R abut against the inclined surfaces S of the first and second pushing protrusions 312L and 312R, respectively, so that the first elastic arm 502L And the second elastic arm 502R moves along the inclined surface S, so that the elastic portion 502 is compressed and elastically deformed.

The switch module 40 is arranged at the bottom of the button base 30. The switch module 40 includes a thin-film circuit board 41 and an elastic body 42 disposed on the thin-film circuit board 41, and the elastic body 42 is located in the other end of the key groove 31 relative to the key cap 10. In this embodiment, the elastic body 42 has a dome shape and its material is elastic silicon rubber. When the external force presses the keycap 10, the key support shaft 20 is pressed against the elastic body 42, the elastic body 42 is elastically deformed and triggers the switch (not shown in the figure) on the film circuit board 41, so that the switch module 40 produces corresponding Key signal; when the external force is released, the elastic body 42 elastically recovers and provides elastic restoring force to the key support shaft 20, and the key support shaft 20 is reset.

Please refer to FIG. 3, which is a schematic diagram of the operation of the button structure of the present invention. In (i) of FIG. 3, the keycap 10 is in the initial position, the first elastic arm 502L of the elastic part 502 bears on the first pushing protrusion 312L; the key support shaft 20 bears on the elastic part 502. The hemispherical elastic body 42 and the elastic portion 502 both provide sufficient upward supporting force to support the key support shaft 20 evenly and stably. Next, please refer to Figure 3(ii). When the external force F presses the keycap 10, the key support shaft 20 moves downward and drives the elastic piece 50 to move, the first pushing protrusion 312L of the pushing portion 312 pushes against the elastic portion The first elastic arm 502L of 50 allows the first elastic arm 502L to abut against the inclined surface S of the first pushing protrusion 312L and move along the inclined surface S, so that the first elastic arm 502L is compressed and elastically deformed. In turn, a sense of passage of key presses is generated. Then, please refer to FIG. 3(iii). Then, the key protrusion 203 abuts on the key stop block 311 to stop the key support shaft 20 from moving downwards. At this time, the first elastic arm 502L of the elastic part 50 crosses The first pushing protrusion 312L of the pushing portion 312 elastically returns, allowing the first elastic arm 502L of the elastic portion 50 to swing and hit the inner surface of the key groove 31 to generate the first sound. In addition, the elastic body 42 also simultaneously The switch (not shown in the figure) on the film circuit board 41 is triggered due to the elastic deformation, so that the switch module 40 generates a corresponding key signal. Then, please refer to Figure 3(iv). When the external force F stops pressing the keycap 10, the elastic body 42 elastically recovers and provides sufficient elastic restoring force to the key support shaft 20. The key support shaft 20 is in the resetting process. The first elastic arm 502L that drives the elastic portion 50 hits and passes over the first pushing protrusion 312L of the pushing portion 312 to generate a second sound. Finally, the keycap 10 returns to the initial position (as shown in (v) of FIG. 3). It should be further explained that the second elastic arm 502R of the elastic portion 502 also performs the same action at the same time, which will not be repeated here.

Compared with the prior art, the key structure provided by the present invention has fewer parts and simple structure, making it easy to assemble. On the other hand, because this case uses a hemispherical shaped elastic body to support the key support shaft instead of the spring structure of the conventional mechanical keyboard, the backlight light passing through the key structure will not be blocked by the spring structure, making the word keys The luminous effect is more uniform. In addition, the shrapnel provided in the key support shaft and the push part on the inner surface of the key seat can form a sense of paragraph when the key is pressed and a knocking sound similar to a mechanical keyboard; therefore, the present invention is really a great Creation of industrial value.

The present invention can be modified in many ways by those who are familiar with the art, but none of them deviates from the protection of the attached patent scope.

S‧‧‧inclined surface

10‧‧‧Keycap

101‧‧‧The first engagement structure

20‧‧‧Key support shaft

201‧‧‧Second engagement structure

202‧‧‧Containing Slot

203‧‧‧Button bump

204‧‧‧Opening

204L‧‧‧First opening

204R‧‧‧Second opening

205‧‧‧locking ribs

30‧‧‧Key Holder

31‧‧‧Key Slot

311‧‧‧Key stop block

312‧‧‧Department

312L‧‧‧First push bump

312R‧‧‧Second push bump

40‧‧‧Switch Module

41‧‧‧Thin Film Circuit Board

42‧‧‧Elastomer

50‧‧‧Shrapnel

501‧‧‧Fixed part

502‧‧‧Elasticity

502L‧‧‧First elastic arm

502R‧‧‧Second Arm

Claims (13)

A key structure includes: a key support shaft, including: an accommodating groove; and an opening part communicated with the accommodating groove; an elastic piece arranged in the accommodating groove, the elastic piece having an elastic part and partially Pass through the opening; a key holder, including: a key groove, the key support shaft is arranged in the key groove so as to be movable up and down; and a push part is arranged on the inner surface of the key groove, and the The pushing portion corresponds to the elastic portion; and a key cap is coupled to the key support shaft; wherein, when an external force presses the key cap, the pushing portion pushes the elastic portion to make it elastically deformed, and then the elastic portion Beyond the pushing part, the elastic part returns, the elastic part swings and hits the inner surface of the key groove to generate a sound. For example, the button structure described in item 1 of the scope of patent application further includes a switch module arranged at the bottom of the button seat, the switch module including a membrane circuit board and a membrane circuit board arranged on the membrane circuit board. An elastic body on the upper side, and the elastic body is located in the key groove. For the key structure described in item 2 of the scope of patent application, when the external force presses the key cap, the key support shaft presses the elastic body, so that the switch module generates a corresponding key signal. For the key structure described in item 2 of the scope of patent application, when the external force is released, the elastic body elastically recovers and provides elastic restoring force to the key support shaft, and the elastic part hits and passes over the key support shaft during the reset process. Push against the part and produce a sound. According to the key structure described in item 1 of the scope of patent application, the opening portion includes a first opening and a second opening. As for the key structure described in item 5 of the scope of patent application, the elastic portion includes a first elastic arm and a second elastic arm, the first elastic arm part passes through the first opening, and the second elastic arm part passes through Exit the second opening. For the key structure described in item 6 of the scope of patent application, the pushing portion includes a first pushing protrusion and a second pushing protrusion, and the first pushing protrusion and the second pushing protrusion The blocks each have an inclined surface. For the key structure described in item 7 of the scope of patent application, when the external force presses the keycap, the first elastic arm and the second elastic arm abut against the first and second pushing protrusions, respectively The inclined surface of the bump moves along the inclined surface to be elastically deformed. For the button structure described in item 6 of the scope of patent application, the elastic sheet has a fixing member connected with the first elastic arm and the second elastic arm, and the fixing member is arranged in the accommodating groove To fix the shrapnel. As for the button structure described in item 1 of the scope of patent application, the outer surface of the button support shaft has a button bump, the inner surface of the button groove has a button stop block corresponding to the button bump, the button The convex block is used to abut on the key stop block to stop the key support shaft from moving downward. In the key structure described in item 10 of the scope of patent application, the key bump is located above the opening. In the key structure described in item 10 of the scope of patent application, the key stop block is located below the push part. The key structure described in item 1 of the scope of patent application, wherein the key cap has a first engaging structure, the key support shaft has a second engaging structure, the first engaging structure and the second engaging structure The key cap is detachably connected to the key support shaft.

Images