CN111009435B - Key structure - Google Patents

Abstract

The invention provides a key structure, which includes a key seat, a key supporting shaft, a key cap, a rotating part and an elastic element. The key base has a sleeve structure, and the pressing part of the key support shaft is arranged in the sleeve structure, and the rotating part and the elastic element are arranged in the sleeve structure and located below the pressing part. When the keycap is pressed by an external force, the pressing part presses the rotating part to drive the rotating part to rotate and generate sound.

Description

key structure

technical field

The invention relates to a structure of an input device, in particular to a key structure.

Background technique

In today's society, the use of electronic products has become an indispensable part of life. Food, clothing, housing, transportation, education, and entertainment are all related to electronic products. Generally speaking, electronic products are equipped with a button structure. In order to make the button structure easier to assemble, the configuration of the support structure in the button structure will be simplified. However, the simplification of the support structure may also cause the button to lose the sense of the original pressing stroke, and The feedback sound when the key is pressed causes the user to have an uncomfortable pressing feeling, making it impossible for the user to maintain the original good typing rhythm.

Therefore, how to make the button structure produce appropriate pressing step feeling and knocking sound under the condition of simplifying the design of the button structure is the technical problem to be solved by the present invention.

Contents of the invention

The main purpose of the present invention is to provide a key structure with a sense of pressing steps and a knocking sound, so that the user can have a comfortable pressing feel while maintaining the original good typing rhythm.

To achieve the aforementioned purpose, the present invention provides a button structure, comprising:

The key seat has a key groove and a sleeve structure adjacent to the key groove, the inner surface of one end of the sleeve structure has a first limiting flange, and the opposite end has a stop structure;

The key support shaft has a pressing piece and a pressing piece connected with the pressing piece. The pressing piece is arranged in the key groove so as to be displaceable up and down. The pressing piece is arranged in the sleeve structure and is linked with the pressing piece. The pressing piece has first ratchet;

The keycap is combined with the pressing part;

The rotating part is arranged in the sleeve structure and is located under the pressing part. The rotating part includes:

a second ratchet portion corresponding to the first ratchet portion; and

the second limiting flange is arranged on the outer peripheral surface of the rotating member, and is used for fitting with the first limiting flange to restrict the rotating member from rotating; and

The elastic element is arranged in the sleeve structure and is located between the rotating part and the stop structure, and is used to resist the rotating part;

Wherein, when the keycap is pressed by an external force, the pressing member presses against the rotating member, so that the rotating member gradually breaks away from the limit of the first limiting flange to rotate and generate sound.

In the above preferred implementation manner, the bottom of the key base has an annular base.

In the above preferred embodiment, it further includes a switch module, and the switch module is arranged in the annular base.

In the above preferred implementation manner, the switch module includes a thin film circuit board and an elastic body disposed on the thin film circuit board.

In the above preferred implementation manner, when the key cap is pressed by an external force, the pressing member presses against the elastic body so that the switch module generates a corresponding key signal.

In the above preferred embodiment, when the external force is released, the elastic body recovers elastically and provides an elastic restoring force to the pressing member, so that the support shaft of the key is reset, and at the same time, the elastic member stretches elastically to make the rotating member rotate and reset to generate sound.

In the above preferred embodiment, the first ratchet part and the second ratchet part are one-way ratchets.

In the above preferred embodiment, wherein the first limiting flange has a plurality of first limiting slopes, the second limiting flange has a plurality of second limiting slopes, the first limiting slope and the second limiting slope fit together to limit the rotation of the rotating member.

In the above-mentioned preferred embodiment, wherein the center of the first ratchet part has a limit hole that passes through the pressing member, the center of the second ratchet part protrudes from the limit shaft, and the limit shaft is movably installed in the limit hole, The rotating part can be rotated with the limiting shaft as the axis.

In the above-mentioned preferred embodiment, wherein the keycap has a first engaging structure, the pressing member has a second engaging structure, and the first engaging structure and the second engaging structure are engaged so that the keycap can be detachably combined with the Press pieces.

In the above preferred embodiment, the elastic element is a spring.

In the above-mentioned preferred embodiment, wherein the rotating member has a limit seat opposite to the second ratchet part and a limit groove arranged around the limit seat, and one end of the elastic element extends into the limit groove and covers Set on the limit seat.

In the above-mentioned preferred embodiment, one side of the pressing member has a groove structure for partially accommodating the sleeve structure, and the pressing member is located in the groove structure and is connected to the pressing member through a connecting portion.

In the above-mentioned preferred embodiment, the shell structure adjacent to the button groove has a guide groove on the housing, and the connecting part is passed through the guide groove and can move along the guide groove.

Description of drawings

FIG. 1A is a three-dimensional schematic diagram of the button structure of the present invention;

Fig. 1B is a three-dimensional exploded view of the button structure of the present invention;

Fig. 2A is a partial cross-sectional view of a key base provided by the present invention;

FIG. 2B is a perspective schematic view of another viewing angle of the button base provided by the present invention;

FIG. 3A is a perspective view of a key support shaft provided by the present invention;

FIG. 3B is a schematic perspective view of another viewing angle of the key support shaft provided by the present invention;

Fig. 4A is a three-dimensional schematic diagram of a viewing angle of the rotating member provided by the present invention;

Fig. 4B is a stereoscopic schematic diagram of another viewing angle of the rotating member provided by the present invention; and

FIG. 5(i) to FIG. 5(v) are schematic diagrams of the action of the button structure of the present invention, respectively.

Explanation of reference signs:

F: external force

P1: first pressing position

P2: second pressing position

P3: third pressing position

10: Keycap

101: the first engaging structure

20: Button seat

21: side wall

22: sleeve structure

221: guide groove

222: the first limit flange

2221: The first limit bevel

2221S: First tip

223: Stop structure

23: Ring base

24: key slot

30: Button support shaft

31: Press piece

311: the second engaging structure

32: Pressure piece

321: First ratchet part

322: limit hole

33: Connecting part

34: groove structure

40: rotating part

41: Second ratchet part

42: limit shaft

43: Second limit flange

431: The second limiting slope

431S: Second tip

44: limit seat

45: limit groove

50: elastic element

60: switch module

61: Thin film circuit board

62: Elastomer

Detailed ways

The advantages and features of the present invention and methods for attaining the same will be more easily understood by more detailed description with reference to exemplary embodiments and accompanying drawings. However, the invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, for those skilled in the art, these embodiments are provided to make this disclosure more thorough, comprehensive and fully convey the scope of the present invention.

First, please refer to FIG. 1A and FIG. 1B . FIG. 1A is a perspective view of the button structure of the present invention; FIG. 1B is an exploded perspective view of the button structure of the present invention. The button structure 1 of the present invention includes: a keycap 10 , a button seat 20 , a button support shaft 30 , a rotating member 40 , an elastic element 50 and a switch module 60 .

The lower surface of the keycap 10 has a first engaging structure 101 . The key base 20 has a surrounding side wall 21 , a sleeve structure 22 connected to the side wall 21 and an annular base 23 at the bottom of the key base 20 . The surrounding side wall 21 is formed with a key slot 24 passing through the key base 20 , and the sleeve structure 22 is adjacent to the key slot 24 and partially protrudes from the key slot 24 . The key supporting shaft 30 has a pressing member 31 and a pressing member 32 connected to the pressing member 31 , and the pressing member 31 has a second engaging structure 311 corresponding to the first engaging structure 101 . The switch module 60 includes a film circuit board 61 and an elastic body 62 arranged on the film circuit board 61, the elastic body 62 corresponds to the switch (not shown in the figure) on the film circuit board 61, and can pass through the elastic body 62 The deformation contacts the switch to generate a corresponding key signal.

Please continue to refer to FIG. 1A and FIG. 1B , the pressing member 31 is disposed in the key groove 24 so as to displace up and down, while the pressing member 32 is arranged in the sleeve structure 22 and can be displaced synchronously with the pressing member 31 . The first engaging structure 101 of the keycap 10 can be engaged with the second engaging structure 311 of the pressing member 31, so that the keycap 10 can be detachably combined with the pressing member 31, so that users can replace There are keycaps with different colors, shapes or materials. In this embodiment, the first engaging structure 101 is a cross-shaped groove, and the second engaging structure 311 is a cross-shaped shaft. The rotating part 40 and the elastic element 50 are both arranged in the sleeve structure 22, the rotating part 40 is located under the pressing part 32, the elastic element 50 can be a spring, and is used to resist the rotating part 40, so that the rotating part 40 has the potential to move toward the pressing member 32 and can move back and forth in the sleeve structure 22 . The switch module 60 is disposed in the annular base 23 , and the elastic body 62 is used to provide elastic recovery force to the pressing member 31 of the key support shaft 30 .

Please refer to FIG. 2A and FIG. 2B , FIG. 2A is a partial cross-sectional view of the key base provided by the present invention from one perspective; FIG. 2B is a perspective view of the key base provided by the present invention from another perspective. The inner surface of one end of the sleeve structure 22 has a raised first limiting flange 222, and the first limiting flange 222 has a plurality of first limiting slopes 2221, and each first limiting slope 2221 has a The first tip 2221S; the opposite end has a stop structure 223 . In addition, the housing of the sleeve structure 22 adjacent to the button groove 24 has a guide groove 221 disposed along the axial direction.

Please refer to FIG. 3A and FIG. 3B , FIG. 3A is a schematic perspective view of the key support shaft provided by the present invention from one perspective; FIG. 3B is a perspective schematic diagram of another perspective view of the key support shaft provided by the present invention. One side of the pressing member 31 has a groove structure 34 corresponding to the shape of the sleeve structure 22 and used for partially accommodating the sleeve structure 22 . The pressing member 32 is located in the groove structure 34 and connected to the pressing member 31 by the connecting portion 33 . It should be further explained that when the pressing member 31 is arranged in the button groove 34 and the pressing member 32 is disposed in the sleeve structure 22, the connecting portion 33 is passed through the guide groove 221 of the sleeve structure 22 (such as 2A ), and can move along the guide groove 221 , so that the pressing member 32 disposed in the sleeve structure 22 can be linked with the pressing member 31 . The pressing member 32 has a first ratchet portion 321 and a limiting hole 322 located at the center of the first ratchet portion 321 and passing through the pressing member 32 , and the first ratchet portion 321 is a one-way ratchet. Although the present invention only proposes an embodiment in which the pressing member 31 has a groove structure 34, in actual application, if the sleeve structure 22 does not partially protrude from the key groove 24, there is no need to add a groove structure 34 to the pressing member 31. A corresponding groove structure 34 is provided on the side.

Please refer to FIG. 4A and FIG. 4B , FIG. 4A is a perspective view of the rotating member provided by the present invention; FIG. 4B is a perspective view of the rotating member provided by the present invention in another view. The rotating member 40 has a second ratchet portion 41 corresponding to the first ratchet portion 321 (as shown in FIGS. 3A and 3B ), and the second ratchet portion 41 is also a one-way ratchet. The center of the second ratchet part 41 protrudes a limit shaft 42, and the limit shaft 42 is movably passed through the limit hole 322 of the pressing member 32 (as shown in FIGS. 3A and 3B ), so that the rotating member 40 can rotate with the limit shaft 42 as the axis. In addition, the outer peripheral surface of the rotating member 40 is provided with a second limiting flange 43, and the second limiting flange 43 has a first limiting slope 2221 corresponding to the first limiting flange 222 (as shown in FIG. 2A ). There are a plurality of second limiting slopes 431, and each second limiting slope 431 has a second tip 431S. The first limiting slope 2221 can fit with the second limiting slope 431 to limit the rotation of the rotating member 40 . The other end of the rotating member 40 relative to the second ratchet portion 41 has a limit seat 44 and a limit groove 45 which is arranged around the limit seat 44. In this way, one end of the elastic element 50 (as shown in FIG. 1B ) It can lean against the stop structure 223 (as shown in Figures 2A and 2B), while the opposite end stretches into the limiting groove 45, and is sleeved on the limiting seat 44 to resist the rotating member 40 , so that the rotating member 40 has the potential to move toward the pressing member 32 , and allows the rotating member 40 to move back and forth in the sleeve structure 22 . It should be further explained that when the rotating member 40 is pressed by the pressing member 32, the second tip 431S of the second limiting slope 431 is separated from the first tip 2221S along the first limiting slope 2221 (as shown in FIG. 2A and FIG. 2B ). As shown), the rotating member 40 can rotate.

Please refer to FIG. 5 . FIG. 5 is a schematic diagram of the action of the button structure of the present invention. In diagram (i) of FIG. 5 , the keycap 10 is located at the first pressing position P1, and one end of the elastic element 50 abuts against the stop structure 223 , and the opposite end extends into the limiting groove 45 , and Sleeved on the limit seat 44 to resist the rotating member 40, so that the rotating member 40 has the potential to move towards the pressing member 32. The ratchet parts 41 are engaged with each other, and the plurality of second limiting bevels 431 of the second limiting flange 43 of the rotating member 40 and the first limiting bevels 2221 of the first limiting flange 222 are engaged with each other, so that the rotating member 40 It cannot be rotated, and the limiting shaft 42 passes through the limiting hole 322 . Next, please refer to diagram (ii) of FIG. 5 , when the external force F presses the keycap 10 to move the keycap 10 to the second pressing position P2, the pressing member 31 drives the pressing member 32 to press the rotating member 40, and at this time rotates The second tip 431S (as shown in FIG. 4A and FIG. 4B ) of the second limiting bevel 431 of the member 40 is separated from the first tip 2221S (as shown in FIGS. 2A and 2B ) along the first limiting bevel 2221 to produce Rotate, the first ratchet portion 321 and the second ratchet portion 41 are in a state of abutting against each other without being engaged. Next, please refer to diagram (iii) of FIG. 5 , when the external force F presses the keycap 10 to move the keycap 10 to the third pressing position P3, the first ratchet portion 321 of the pressing member 32 and the first ratchet portion 321 of the rotating member 40 The two ratchet parts 41 mesh with each other, and thereby drive the rotating member 40 to rotate, so that the user can feel the step feeling of pressing the button, and at the same time, use the rotation and jump of the rotating member 40 to produce a sound similar to tapping the button. In addition, the pressing member 31 also presses against the elastic body 62 at the same time, so that the switch module 60 generates a corresponding key signal. Next, please refer to the diagram (iv) of FIG. 5 , when the external force F stops pressing the keycap 10, the elastic body 62 elastically recovers and provides an elastic restoring force on the pressing member 31, so that the key support shaft 30 is reset and drives the keycap 10 to move. When the second pressing position P2 is reached, the pressing member 32 is reset synchronously at this time, and the elastic member 50 is stretched elastically so that the rotating member 40 is reset by rotation. Finally, please refer to the diagram (v) of FIG. 5 , when the rotating member 40 is reset, it hits the first limiting flange 222 of the sleeve structure 22 again, and produces a sound similar to that of a key reset, while the second rotating member 40 The plurality of second limiting slopes 431 of the limiting flange 43 and the first limiting slopes 2221 of the first limiting flange 222 are engaged with each other again, so that the rotating member 40 cannot rotate.

Compared with the prior art, the button structure provided by the present invention can form the segmental feeling of button pressing through the rotating parts in the sleeve structure, and at the same time, use the pressing rotating parts to generate sounds similar to button pressing and button reset, allowing users to The latter has a comfortable pressing feel and can maintain the original good typing rhythm.

The present invention can be modified in various ways by those skilled in the art, all without departing from the intended protection of the appended claims.

Claims (10)

1. A button structure, comprising: A key base has a key groove and a sleeve structure adjacent to the key groove, the inner surface of one end of the sleeve structure has a first limit flange, and the opposite end has a stop structure, the key The bottom of the seat has an annular base; A button supporting shaft has a pressing piece and a pressing piece connected with the pressing piece. The pressing piece can be displaceable up and down in the key groove. The pressing piece is arranged in the sleeve structure and is connected with the pressing piece. The parts are interlocked, and the pressing part has a first ratchet part; a key cap combined with the pressing part; A rotating part is arranged in the sleeve structure, and is positioned under the pressing part, and the rotating part includes: a second ratchet portion corresponding to the first ratchet portion; and A second limiting flange is arranged on the outer peripheral surface of the rotating member, and is used for fitting with the first limiting flange to restrict the rotating member from rotating; an elastic element, arranged in the sleeve structure and between the rotating member and the stop structure, is used to resist the rotating member; and A switch module, the switch module is arranged in the annular base, the switch module includes a thin film circuit board and an elastic body arranged on the thin film circuit board; Wherein, when an external force presses the keycap, the pressing member presses the rotating member, so that the rotating member gradually breaks away from the limit of the first limiting flange to rotate and generate sound; when the external force presses the key When the cap is on, the pressing member presses against the elastic body to make the switch module generate a corresponding key signal. 2. The button structure according to claim 1, wherein when the external force is released, the elastic body elastically recovers and provides an elastic restoring force to the pressing member, so that the supporting shaft of the button is reset, and at the same time, the elastic member stretches elastically to make the rotation The component is rotated and reset to produce a sound. 3. The button structure as claimed in claim 1, wherein the first ratchet portion and the second ratchet portion are one-way ratchets. 4. The button structure according to claim 1, wherein the first limiting flange has a plurality of first limiting slopes, the second limiting flange has a plurality of second limiting slopes, and the plurality of first limiting slopes A limiting inclined surface fits with the plurality of second limiting inclined surfaces to limit the rotating member from rotating. 5. The button structure according to claim 1, wherein the center of the first ratchet part has a limit hole through the pressing member, and the center of the second ratchet part protrudes a limit shaft, and the limit shaft can It is movably passed through the limiting hole, so that the rotating member can rotate with the limiting shaft as the axis. 6. The button structure according to claim 1, wherein the keycap has a first engaging structure, the pressing member has a second engaging structure, and the first engaging structure is engaged with the second engaging structure close, so that the keycap is detachably combined with the pressing member. 7. The button structure as claimed in claim 1, wherein the elastic element is a spring. 8. The button structure according to claim 7, wherein the rotating member has a limiting seat opposite to the second ratchet part and a limiting groove arranged around the limiting seat, and the elastic element One end extends into the limiting groove and sleeves on the limiting seat. 9. The button structure according to claim 1, wherein one side of the pressing member has a groove structure, the groove structure is used for partially accommodating the sleeve structure, and the pressing member is located in the groove structure, And the pressing piece is connected through a connecting portion. 10 . The button structure according to claim 9 , wherein a guide groove is formed on the shell of the sleeve structure adjacent to the button groove, and the connecting part passes through the guide groove and can move along the guide groove. 11 .

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