TWI497548B - Keyswitch structure - Google Patents

Description

Button structure

The invention relates to a button structure, in particular to a button structure which generates a button segment difference feeling by a return member operated in a horizontal direction.

In the existing button structure, there is a rubber dome under the key cap, and the key cap is supported by a supporting structure such as a scissor foot to maintain the straight downward stroke of the key cap, and the elastic body receives the key cap when the key cap is pressed downward. The compression deformation provides a button segment difference to provide an elastic restoring force for the keycap to rebound upward. The direction of the keycap of the conventional button structure is consistent with the direction of the elastic body and the elastic restoring force, that is, the vertical direction. In order to provide sufficient button segmentation for design, this type of button structure must maintain a certain thickness and size in the design of the elastomer, so it is difficult to further reduce the volume of the button while still having an acceptable step difference.

In order to solve the above problems, the present invention provides a key structure in which a return member in a horizontal direction is designed to provide various key segment feelings that meet the requirements.

In an embodiment of the invention, a button structure is provided, including a bottom plate, a key cap, a ground link, a second link, and a return member. The bottom plate has a sliding slot, and the key cap is movable relative to the bottom plate in a first direction between a first position and a second position. The upper end of the first link is pivotally connected to the keycap. When the keycap moves in the first direction, the first link is driven by the keycap, and the upper end of the first link is pivoted relative to the keycap. The lower end of the first link is slidable on the bottom plate in a second direction. The upper end of the second link is pivotally connected to the keycap, and the lower end of the second link is Slide on the bottom plate. The return member includes a follower and an elastic member. The follower has a body, a slider is disposed on the body, the slider is disposed in the sliding slot, and when the first link is driven by the keycap, the lower end of the first link pushes the body toward the Move in the second direction. The elastic member abuts against the body, and the elastic member provides an elastic restoring force to the body in a third direction.

In the embodiment of the present invention, the chute is a curved chute extending along the second direction and the third direction at the same time, the chute is an arc shape convex along the third direction, along the third direction A concave arc or S shape.

In an embodiment of the invention, the first direction is a vertical direction, the second direction and the third direction are horizontal directions, and an angle between the third direction and the second direction is greater than 120 degrees.

In the embodiment of the present invention, the follower is a two-disc, the elastic member is a U-shaped elastic piece and simultaneously accommodates the two disks. When the key cap moves in the first direction, the lower end of the first link The two discs are pushed to move the same distance in the second direction.

In the embodiment of the present invention, the bottom plate has two sliding slots, and the driven member has two disc bodies respectively extending with a slider, and the sliders of the two disc bodies are respectively disposed in the two sliding slots. When the follower is pushed by the first link and moved in the second direction, the elastic member is pushed outwardly by the two disk bodies in the third direction.

In the embodiment of the present invention, the button structure further includes an outer connecting rod, one end is pivotally connected to the key cap, and the other end is slidable on the bottom plate, the outer connecting rod has a connecting rod storage space, the first connecting rod The second link and the return member are both disposed in the link receiving space.

In the embodiment of the present invention, the elastic member is a linear torsion spring, one end is fixed on the bottom plate, and the other end is abutted on the body.

In another embodiment of the present invention, a button structure is provided, including a bottom plate, A mounting plate, a keycap, a connecting rod and a return member. The mounting plate is mounted on the bottom plate, the mounting plate having a shaft hole. The key cap is movable relative to the bottom plate between a first position and a second position in a first direction. The upper end of the connecting rod is pivotally connected to the keycap. When the keycap moves in the first direction, the connecting rod is driven by the keycap, and the upper end of the connecting rod is pivoted relative to the keycap, and the lower end of the connecting rod is Slide on the bottom plate in a second direction. The return member includes a follower and an elastic member. The follower is pivotally connected to the shaft hole. When the link is driven by the key cap, the lower end of the link abuts against the follower and drives the follower in the second direction, so that the follower The piece rotates in a first direction of rotation with the first direction as an axis. The elastic member abuts the follower, and the elastic member provides an elastic restoring force to the follower in a second rotational direction, the first rotational direction being opposite to the second rotational direction.

In an embodiment of the invention, wherein the elastic member is a linear torsion spring, the linear torsion spring has a fixed end and a movable end fixed to the mounting plate, the movable end abutting the follower, the movable end is on the mounting plate when the follower rotates in the first rotational direction The upper movement is to increase the amount of deformation of the linear torsion spring, and the elastic restoring force is accompanied by an increase.

In the embodiment of the present invention, the mounting plate has an elastic member receiving groove, and the line shape The torsion spring is disposed in the elastic member receiving groove, the elastic member receiving groove has a head end and a tail end, the head end receives the fixed end, the tail end receives the movable end, and the groove width of the head end is smaller than the tail end Channel width.

In the embodiment of the present invention, the follower is received at the tail of the elastic member receiving groove In the end, the trailing end has a channel width sufficient to allow the follower to rotate within the trailing end.

In an embodiment of the invention, the elastic member receiving groove has a vicinity of the fixed end A linear slit having a linearly extending section that holds the linearly extending section.

In the embodiment of the present invention, the mounting plate includes an upper mounting plate and a lower mounting plate. When the upper mounting plate is combined with the lower mounting plate, the elastic member receiving groove is formed on the upper mounting plate and the lower mounting plate. between.

In the embodiment of the present invention, the upper mounting plate has an upper hole, and the lower mounting plate has a lower hole, the upper hole and the lower hole together constitute the shaft hole, the driven member is a cam plate and has an upper portion The shaft and the lower shaft are inserted into the upper hole, and the lower shaft is inserted into the lower hole.

The button structure of the invention converts the movement of the keycap in the vertical direction relative to the bottom plate via the connecting rod into a returning member, which is driven by the connecting rod in the horizontal direction to accumulate the elastic restoring force, and can be designed with a practical difference under a limited height and size limitation. The button structure of the sense.

1,2‧‧‧ button structure

10,50‧‧‧floor

12,13,14‧‧ ‧ chute

18‧‧‧ switch

20,60‧‧‧Key Cap

22‧‧‧Bump

24‧‧‧First pivotal

26‧‧‧Second pivotal

28‧‧‧ Third pivotal

32‧‧‧First Link

34‧‧‧second link

36‧‧‧Outer connecting rod

40,90‧‧‧Response components

42,92‧‧‧ Followers

44,94‧‧‧Flexible parts

72‧‧‧ linkage

80‧‧‧Installation board

81‧‧‧Axis hole

82‧‧‧Upper mounting plate

84‧‧‧Installation board

86‧‧‧Flexible storage slot

322,342,722‧‧‧ upper end

324,344,724‧‧‧Bottom

362‧‧‧Connected storage space

422‧‧‧ Ontology

424‧‧‧ Slider

811‧‧‧Upper hole

812‧‧‧ lower hole

861‧‧‧ head end

862‧‧‧End

863‧‧‧Line slit

921‧‧‧Upper axis

922‧‧‧lower shaft

941‧‧‧ fixed end

942‧‧‧ active end

943‧‧‧Linear extension

X ₁ , X ₂ , Y ₁ , Y ₂ , Z ₁ , Z ₂ ‧‧‧ directions

W ₁ , W ₂ ‧‧‧Width

R ₁ , R ₂ ‧‧‧ direction of rotation

Fig. 1 is a schematic exploded view of a first embodiment of the key structure of the present invention.

Fig. 2 is a schematic view showing another perspective of Fig. 1.

Figure 3 is a cross-sectional view showing the first embodiment of the button structure in a first position.

Figure 4 is a cross-sectional view showing the first embodiment of the button structure in a second position.

Figure 5 is a schematic view of the first link of the first embodiment of the button structure and the return member in the first position.

Figure 6 is a schematic view of the first link of the first embodiment of the button structure and the return member in the second position.

Figure 7 is a bottom plan view of a portion of the first embodiment of the button structure in the first position.

Figure 8 is a bottom plan view of a portion of the components of the first embodiment of the button structure in the second position.

Figure 9 is a bottom plan view showing a part of the key structure of the second embodiment.

Figure 10 is a bottom plan view showing a part of the key structure of the third embodiment.

Figure 11 is a schematic view showing the explosion of the components of the fourth embodiment of the button structure.

Figure 12 is a partial cross-sectional view showing a fourth embodiment of the button structure.

Fig. 13 is an enlarged schematic view showing the lower mounting plate and the returning member of the fourth embodiment.

Figure 14 is a schematic view showing a part of the components of the fourth embodiment of the button structure in a first position.

Figure 15 is a schematic view showing a part of the components of the fourth embodiment of the button structure in a second position.

Certain terms are used in the specification and subsequent patent applications to refer to specific Components. Those of ordinary skill in the art should understand that a manufacturer may refer to the same component by a different noun. The scope of this specification and the subsequent patent application do not use the difference of the names as the means for distinguishing the elements, but the difference in function of the elements as the criterion for distinguishing. The term "including" as used throughout the specification and subsequent claims is an open term and should be interpreted as "including but not limited to". In addition, the term "coupled" or "connected" is used herein to include any direct and indirect electrical or structural means of connection. Therefore, if a first device is coupled/connected to a second device, it means that the first device can be directly electrically/structuredly connected to the second device, or indirectly electrically/structured through other devices or connection means. To the second device.

Referring to FIG. 1 and FIG. 2, FIG. 1 is a schematic exploded view of a first embodiment of the key structure of the present invention, and FIG. 2 is a schematic view of another perspective of FIG. The button structure 1 includes a bottom plate 10, a keycap 20, a first link 32, a second link 34, an outer link 36, and a return member 40. The bottom plate 20 has a sliding slot 12, and the keycap 20 can be pressed or released to move relative to the bottom plate 10 along the X ₁ X ₂ direction, and the first link 32, the second link 34 and the outer link 36 are disposed on the keycap 20 and Between the bottom plates 20. The upper end 322 of the first link 32 is pivotally connected to the first pivoting portion 24 of the keycap 20, and the upper end 342 of the second link 34 is pivotally connected to the second pivoting portion 26 of the keycap 20, and one end of the outer link 36 The third pivoting portion 28 is pivotally connected to the keycap 20 . When the keycap 20 moves in the X ₁ X ₂ direction, the first link 32, the second link 34, and the outer link 36 are driven by the keycap 20 to make the upper end 322 and the second link 34 of the first link 32. The upper end 342 and the outer link 36 pivot relative to the keycap 20 while the lower end 324 of the first link 32, the lower end 344 of the second link 34, and the other end of the outer link 36 are slidable on the base plate 10. Wherein the lower end 324 of the first link 32 toward _a sliding direction Y, the lower end of the second link 34 is slid in the _second direction Y 344. In the present embodiment, the outer link has a link housing space 362, and the first link 32, the second link 34, and the return member 40 are disposed in the link housing space 362. In addition, the keycap 24 has four corners boss 22, bottom plate 10 in a position corresponding to the boss 22 may have one or more switches 18, 24 under pressure when the keycap 10 is moved relative to the base plate in the X ₁ direction, The post 22 can actuate the switch 18 to produce a button press.

The return member 40 includes a follower 42 and an elastic member 44. In the present embodiment, the follower 42 is two discs, and the elastic member 44 is a U-shaped elastic piece, and the two discs are accommodated at the same time. Each of the disks has a body 422. A slider 424 extends from the body. Correspondingly, the bottom plate 10 has two sliding slots 12, and the sliders 424 are respectively disposed in the sliding slots 12. The elastic member 44 abuts against the body 422 of the follower 42 and provides an elastic restoring force to the body 422 along the Z ₁ Z ₂ direction.

Please refer to FIG. 3 to FIG. 8 , wherein FIG. 3 is a cross-sectional view of the first embodiment of the button structure in a first position, and FIG. 4 is a cross-sectional view of the first embodiment of the button structure in a second position. 5 is a schematic view of the first link of the first embodiment of the button structure and the return member in the first position, and FIG. 6 is a schematic view of the first link of the first embodiment of the button structure and the return member in the second position. Figure 7 is a bottom view of a portion of the first embodiment of the button structure in the first position, and Figure 8 is a bottom view of a portion of the first embodiment of the button structure in the second position. It is seen from FIG. 3 and FIG. 4, the keycap 20 can be pressed or released while the bottom plate 10 is moved between the first position and a second position relative to the direction along the X ₁ X _2. In the key structure 1 of the present invention, the chute 12 of the bottom plate 10 is a curved chute extending in the Y ₁ Y ₂ direction and the Z ₁ Z ₂ direction at the same time. More specifically, in the first embodiment, the chute 12 At the same time, it extends along the Y ₁ Y ₂ direction and the Z ₁ Z ₂ direction, and has a circular arc shape convex in the Z ₁ Z ₂ direction. If the angle of the button is pressed, the X ₁ X ₂ direction is the vertical direction, the Y ₁ Y ₂ direction and the Z ₁ Z ₂ direction are the horizontal direction, and the Y ₁ Y ₂ direction and the Z ₁ Z ₂ direction are between each other. The included angle may be 90 degrees or more, preferably 120 degrees in this embodiment.

When the keycap 20 pressed to FIG. 3 of the first position relative to the second plate 10 is moved to the second position of FIG. 4 along _a direction X, the keycap 20 drives the first link 32, the first even The lower end 324 of the rod 32 slides in the Y ₁ direction and pushes the body 422 of the follower 42 toward the Y ₁ direction. In the present embodiment, the body 422 of the two discs of the follower 42 moves in the Y ₁ direction. The same distance. Since the slide follower 42 is disposed in the chute 12 424, and therefore the slider 424 moves along the path of the chute 12, when the 422 is moved in _a direction Y two disc body, the two bodies The 422 will move outward at the same time (or apart from each other in the Z ₁ Z ₂ direction) and push the elastic member 44 to expand outwardly, as shown in Figs. 6 and 8. In the second position of FIGS. 6 and 8 , the elastic restoring force accumulated by the elastic member 44 is increased, and when the pressure of the key cap 20 is released, the elastic restoring force of the elastic member 44 drives the follower. The two bodies 422 of 42 are close to each other and move along the path of the chute 12 in the Y ₂ direction to push the lower end 324 of the first link 32, thereby causing the upper end 322 of the first link 32 to move upward (X ₂ direction). The keycap 20 is reset to the first position of FIG.

In the above embodiment, the follower 42 includes two discs. However, in other embodiments, the follower 42 may also include only one of the discs, and the bottom plate 10 is provided with a chute 12 correspondingly. One end of the elastic member 44 is fixed to the bottom plate 10, and the other end abuts against the disc body 422 of the follower 42.

Please refer to FIG. 9 and FIG. 10, FIG. 9 is a bottom view of a part of the second embodiment of the key structure, and FIG. 10 is a bottom view of a part of the key structure of the third embodiment. In addition to the foregoing first embodiment, the chute 12 extends simultaneously in the Y ₁ Y ₂ direction and the Z ₁ Z ₂ direction, and has a circular arc shape convex outward in the Z ₁ Z ₂ direction, in the In the second embodiment, the chute 13 extends in the Y ₁ Y ₂ direction and the Z ₁ Z ₂ direction at the same time, and has a circular arc shape concave along the Z ₁ Z ₂ direction, in the third embodiment of FIG. 10 The chute 13 extends simultaneously in the Y ₁ Y ₂ direction and the Z ₁ Z ₂ direction, and is S-shaped. As can be seen from the above embodiments, the key structure of the present invention, by the design of the return member, causes the keycap to convert the vertical motion into the accumulation of the horizontal deformation potential energy in the horizontal direction during the push-down of the link. In addition, the curve of the chutes 12, 13, 14 can also be used to generate various required force curves of the button segment difference.

Please refer to FIG. 11 and FIG. 12, FIG. 11 is a schematic diagram showing the explosion of the components of the fourth embodiment of the button structure, and FIG. 12 is a partial cross-sectional view showing the fourth embodiment of the button structure. The button structure 2 includes a bottom plate 50, a keycap 60, a link 72, a mounting plate 80, and a return member 90. The key cap 60 can be pressed or released to move relative to the bottom plate 50 along the X ₁ X ₂ direction. The connecting rod 72 is disposed between the key cap 60 and the bottom plate 50, and the upper end 722 is pivotally connected to the key cap 60 when the key cap 60 is when X ₁ X ₂ direction, drive link 72 by the key cap 60, upper end 722 of connecting rod 72 pivoted relative to the key cap 60, while the lower end 724 of the link 72 is slidable in _a direction toward the bottom plate 50 Y. The mounting plate 80 is mounted to the base plate 50 and has a shaft hole 81. The return member 90 includes a follower 92 and an elastic member 94. The follower 92 is a cam disc having an upper shaft 921 and a lower shaft 922. The mounting plate 80 includes an upper mounting plate 82 and a lower mounting plate 84. The upper mounting plate 82 has an upper hole 811. The lower mounting plate 84 has a lower hole 812. The upper hole 811 and the lower hole 812 together form a shaft hole 81. The upper shaft 921 of the follower 92 is inserted into the upper hole 811, and the lower shaft 922 is inserted into the lower hole 812, so that the follower 92 is pivotally connected to the shaft hole 81.

Please refer to FIG. 11 and FIG. 13, wherein FIG. 13 is an enlarged schematic view of the lower mounting plate and the return member. The mounting plate 80 has an elastic member receiving groove 86. When the upper mounting plate 82 and the lower mounting plate 84 are coupled, the elastic member receiving groove 86 is formed between the upper mounting plate 82 and the lower mounting plate 84. The elastic member housing groove 86 has a head end 861 and a tail end 862. In the embodiment, the elastic member 94 is a linear torsion spring disposed in the elastic member receiving groove 86. The elastic member 94 has a fixed end 941 and a movable end 942. The fixed end 942 is received in the head end 861 of the elastic member receiving groove 86 of the mounting plate 80. The elastic member receiving groove 86 has a linear slit adjacent to the fixed end 942. 863, the fixed end 942 has a linear extending section 943, and the linear slit 863 holds the linear extending section 943 to fix the fixed end 942 to the head end 861. The movable end 942 is received in the trailing end 862, and the follower 92 is also received in the trailing end 862 and abutted by the movable end 942 of the elastic member 94, and the elastic member 94 provides an elastic restoring force to the follower 92. Channel head end 861 the trailing end 862 is less than the width W of the channel width W _{2 1,} and the trailing end 862 of the channel width W ₂ is sufficient to allow the driven member 92 rotates in the trailing end 862.

Please refer to FIG. 14 and FIG. 15 . FIG. 14 is a schematic diagram showing a part of the components of the fourth embodiment of the button structure in a first position, and FIG. 15 is a part of the fourth embodiment of the button structure in a second position. Schematic diagram of the component. In FIG 14, when the key top 60 (not shown) is pressed in the _X-direction moving key top 60 driven link 72, the lower end 724 of the link 72 abuts against the follower 92 and the Y _The follower 92 is driven in the _one direction, and the follower 92 is rotated in the rotational direction R ₁ with the X ₁ X ₂ direction as the axis. The follower 92 simultaneously drives the movable end 942 of the elastic member 94 to move on the mounting plate 80 to increase the amount of deformation of the movable member 94 (linear torsion spring), and the elastic restoring force of the movable member 94 in the rotational direction R ₂ is accompanied by an increase. As shown in Fig. 15, the direction of rotation R _{1 is} opposite to the direction of rotation R ₂ . When the state of Fig. 15, when the keycap 60 is pressed releasing the pressure, the elastic restoring force of the elastic member 94 R ₂ R ₂ drives the driven member 92 along a pivoting direction of rotation of the rotational direction, along the Y ₂ direction to push the lower end 72 of the first link 724, the upper end 72 so as to drive the first link 722 upward (X ₂ direction), so that the keycap 60 is reset.

It can be seen from the above embodiments that the key structure of the present invention is provided with a key cap, a connecting rod and a returning member on the bottom plate, wherein the key cap is supported by the connecting rod and movable relative to the bottom plate in a first direction. When the keycap moves relative to the bottom plate in the first direction, the keycap drives the link to pivot relative to the keycap, and the bottom plate The upper side slides in a second direction. The return member linked to the link is further driven by the link in the horizontal direction to accumulate an elastic restoring force by the elastic member therein.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1‧‧‧Key structure

10‧‧‧floor

12‧‧‧Chute

20‧‧‧Key Cap

32‧‧‧First Link

34‧‧‧second link

36‧‧‧Outer connecting rod

40‧‧‧Response components

42‧‧‧ Followers

44‧‧‧Flexible parts

322, 342‧‧‧ upper end

324,344‧‧‧Bottom

362‧‧‧Connected storage space

X ₁ , X ₂ , Y ₁ , Y ₂ , Z ₁ , Z ₂ ‧‧‧ directions

Claims (15)

A button structure includes: a bottom plate having a sliding slot; a key cap movable relative to the bottom plate in a first direction between a first position and a second position; a first link, the first An upper end of a connecting rod is pivotally connected to the keycap. When the keycap moves in the first direction, the first connecting rod is driven by the keycap, and the upper end of the first connecting rod is pivoted relative to the keycap, the first The lower end of the connecting rod can slide on the bottom plate in a second direction; a second connecting rod, the upper end of the second connecting rod is pivotally connected to the key cap, the lower end of the second connecting rod can slide on the bottom plate; and a return member The returning member includes: a driven member having a body, a slider extending on the body, the slider being disposed in the sliding slot, and the first connecting member when the first connecting rod is driven by the keycap The lower end of the rod pushes the body to move in the second direction; and an elastic member abuts against the body, the elastic member provides an elastic restoring force to the body in a third direction; wherein the sliding slot is along the second a direction and a curved chute extending in the third direction. The button structure according to claim 1, wherein the chute is a circular arc type convex outward along the third direction, and an arc shape or an S shape concave in the third direction. The button structure of claim 1, wherein the first direction is a vertical direction, the second direction and the third direction are horizontal directions, and an angle between the third direction and the second direction is greater than 120 degrees. The button structure according to claim 1, wherein the follower is a two-disc, and the elastic member is a U The shaped elastic piece simultaneously accommodates the two discs, and when the keycap moves in the first direction, the lower end of the first connecting rod pushes the two discs to move the same distance in the second direction. The button structure of claim 1, wherein the bottom plate has two sliding slots, and the driven member has two disc bodies respectively extending with a slider, and the sliders of the two disc bodies are respectively disposed in the two sliding slots. When the follower is pushed by the first link and moved in the second direction, the elastic member is pushed outwardly by the two disk bodies in the third direction. The button structure as claimed in claim 1, further comprising an outer connecting rod, one end of which is pivotally connected to the keycap, and the other end is slidable on the bottom plate, the outer connecting rod has a connecting rod storage space, the first connecting rod The second link and the return member are both disposed in the link receiving space. The button structure according to claim 1, wherein the elastic member is a linear torsion spring, one end of which is fixed to the bottom plate, and the other end abuts against the body. A button structure includes: a bottom plate; a mounting plate mounted on the bottom plate, the mounting plate has a shaft hole; and a key cap relative to the bottom plate in a first direction and a second position in a first direction Moving between the two ends of the connecting rod, the upper end of the connecting rod is pivotally connected to the keycap, and when the keycap moves in the first direction, the connecting rod is driven by the keycap, and the upper end of the connecting rod is opposite to the keycap Pivoting, the lower end of the connecting rod is slidable on the bottom plate in a second direction; and a returning member comprising: a follower member pivotally connected in the shaft hole, when the connecting rod is driven by the key cap The lower end of the connecting rod abuts the follower and drives the follower in the second direction to make the follower Rotating in a first direction of rotation with the first direction as an axis; and an elastic member abutting the follower member, the elastic member providing an elastic restoring force to the follower in a second direction of rotation, the first The direction of rotation is opposite to the second direction of rotation. The button structure of claim 8, wherein the first direction is a vertical direction, the second direction is a horizontal direction, and the first direction and the second direction are perpendicular to each other. The button structure of claim 8, wherein the elastic member is a linear torsion spring, the linear torsion spring has a fixed end and a movable end, the fixed end is fixed to the mounting plate, and the movable end abuts the slave And a movable member moves on the mounting plate to increase the deformation amount of the linear torsion spring when the follower rotates in the first rotating direction, and the elastic restoring force is accompanied by an increase. The button structure of claim 10, wherein the mounting plate has an elastic member receiving groove, and the linear torsion spring is disposed in the elastic member receiving groove, the elastic member receiving groove has a head end and a tail end, the head end The fixed end is received, and the tail end accommodates the movable end, and the width of the channel at the head end is smaller than the channel width of the tail end. The button structure of claim 11, wherein the follower is received in the tail end of the elastic member receiving groove, and the trailing end has a channel width sufficient to allow the follower to rotate in the tail end. The button structure of claim 11, wherein the elastic member receiving groove has a linear slit adjacent to the fixed end, and the fixed end has a straight extending portion, and the linear slit holds the linear extending portion. The button structure of claim 8, wherein the mounting plate comprises an upper mounting plate and a lower mounting plate, and when the upper mounting plate is combined with the lower mounting plate, the elastic member receiving groove is formed on the upper mounting Between the mounting plate and the lower mounting plate. The button structure of claim 14, wherein the upper mounting plate has an upper hole, the lower mounting plate has a lower hole, the upper hole and the lower hole together constitute the shaft hole, and the driven member is a cam plate There is an upper shaft and a lower shaft, the upper shaft is inserted into the upper hole, and the lower shaft is inserted into the lower hole.