TW201732852A - Key structure - Google Patents

Abstract

A key structure is provided. The key structure includes a key cap, a base, an elastic body, a membrane switch circuit, first and second holding bases, and first and second metal supporting members. The first and second holding bases are disposed on the base, and respectively include first and second side walls. The first and second metal supporting members are connected to the key cap by their first and second pressing portions respectively. The first and second metal supporting members are rotatably connected to the first and second side walls by their first and second L-shaped bending portions respectively. When one presses the key cap, the key cap downwards presses the first and second pressing portions from a non-pressed position, so as to drive the first and second metal supporting members to rotate around the first and second side walls respectively, and first and second bracing portions of the first and second metal supporting members abut against each other to rotate together. When one releases the key cap, the elastic body provides an upward restoring force to drive the key cap back to the non-pressed position.

Description

Button structure

The present invention relates to a key structure, and more particularly to a thinned key structure.

With the spread of electronic devices, various input devices have been widely used as media for communication between users and electronic devices, and thinning of electronic devices has become one of the trends in the industry. In response to this trend, the thinning of input devices is also one of the directions that researchers are pursuing.

Taking the input device of the pressing operation as an example, the conventional button structure supports the key cap with a support structure made of plastic. However, such a support structure requires a large height space, which is disadvantageous for the thinning of the input device.

The present invention relates to a button structure to facilitate thinning of an input device.

According to an aspect of the invention, a button structure is proposed. Button knot The structure comprises a keycap, a bottom plate, an elastic body, a membrane switch circuit, a first support base and a second support base, a first metal support member and a second metal support member. The bottom plate is placed under the keycap. The elastomer is disposed between the keycap and the bottom plate and provides an upward restoring force to the keycap. The membrane switch circuit is disposed on the bottom plate for being triggered to generate a button signal. The first support base and the second support base are disposed on the bottom plate. The first support base has a first side wall, and the first support base and the bottom plate have a first storage space. The second support base has a second side wall, and the second support base and the bottom plate have a second storage space. The first metal support member includes a first pressing portion, a first L-shaped bent portion and a first supporting portion. The first pressing portion is coupled to the keycap, and the first L-shaped bent portion abuts against the first side wall and extends into the first receiving space to rotatably connect the first metal supporting member to the first supporting seat. The second metal support member includes a second pressing portion, a second L-shaped bent portion and a second supporting portion. The second pressing portion is connected to the key cap, the second L-shaped bent portion abuts against the second side wall, and extends into the second receiving space, so that the second metal supporting member is rotatably connected to the second supporting seat, and the second The two abutments are connected to the first abutment. When the keycap is pressed by an external force, the keycap presses the first pressing portion and the second pressing portion downward from an unpressed position, and drives the first metal supporting member and the second metal supporting member to respectively surround the first sidewall and The second side wall rotates, and the first abutting portion and the second abutting portion abut each other and rotate in conjunction. When the external force is released, the elastomer provides an upward restoring force to drive the keycap back to the undepressed position.

According to another aspect of the present invention, a button structure is proposed. The button structure comprises a key cap, a bottom plate, an elastic body, a membrane switch circuit, a first support base and a second support base, a first metal support member and a second metal support Pieces. The keycap has a first hook and a second hook. The first hook has a first hook and a first hook, and the second hook has a second hook and a second hook, the first hook and the second hook Extending in an X-axis direction. The bottom plate is placed under the keycap. The elastomer is disposed between the keycap and the bottom plate and provides an upward restoring force to the keycap. The membrane switch circuit is disposed on the bottom plate for being triggered to generate a button signal. The first support base and the second support base are disposed on the bottom plate. The first support base has a first pivot shaft, and the second support base has a second pivot shaft. The first pivot shaft and the second pivot shaft are parallel to the X-axis direction. The first metal support member includes a first hook opening, a first L-shaped bent portion and a first supporting portion. The first hook hook enters the first hook opening, the first hook end abuts against the lower surface of the first metal support, and the first L-shaped bent portion abuts the first pivot shaft, so that the first The metal support is rotatably coupled to the first support. The second metal support member includes a second hook opening, a second L-shaped bent portion and a second supporting portion. The second hook column enters the second hook opening, the second hook end abuts against the lower surface of the second metal support, and the second L-shaped bent portion abuts the second pivot shaft to make the second The metal support is rotatably coupled to the second support and the second support is coupled to the first support. When the key cap is pressed by an external force, the key cap presses down the first hook opening and the second hook opening from an unpressed position, and drives the first metal support and the second metal support respectively. The first pivoting shaft and the second pivoting shaft rotate, and the first abutting portion and the second abutting portion abut each other to rotate. When the external force is released, the elastic body provides an upward restoring force to drive the keycap to return to the unpressed position, thereby driving the first metal support and the second metal support to rotate.

In order to better understand the above and other aspects of the present invention, The preferred embodiment is described in detail with reference to the accompanying drawings.

100‧‧‧Key structure

110‧‧‧Key Cap

110LS‧‧‧ under the keycap

112‧‧‧ first card sentence

1121‧‧‧ first card hook

1122‧‧‧First card hook

114‧‧‧Second card

1141‧‧‧Second card hook

1142‧‧‧Second card hook

116‧‧‧Bumps

120‧‧‧First metal support

120LS‧‧‧Under the surface of the first metal support

120US‧‧‧Top surface of the first metal support

121‧‧‧First press

122‧‧‧The first card hook hole

123‧‧‧First support

125‧‧‧First L-shaped bend

130‧‧‧Second metal support

130LS‧‧‧Under the surface of the second metal support

130US‧‧‧Second metal support upper surface

131‧‧‧Second press

132‧‧‧Second card hook opening

133‧‧‧Second support

135‧‧‧Second L-shaped bend

140‧‧‧First support

140w‧‧‧first side wall

141‧‧‧Bump

145‧‧‧First pivot shaft

150‧‧‧second support

150w‧‧‧second side wall

151‧‧‧Bump

155‧‧‧Second pivot shaft

160‧‧‧Light guide plate

162‧‧‧The first card hook hole

164‧‧‧Second card hooking hole

165‧‧‧First light guide through hole

166‧‧‧Second light guide through hole

170‧‧‧ Membrane Switch Circuit

171‧‧‧Depression

172‧‧‧ first hook channel

174‧‧‧Second hook channel

175‧‧‧First receiving hole

176‧‧‧Second receiving hole

180‧‧‧ Elastomers

190‧‧‧floor

191‧‧‧Budded through hole

E‧‧‧ area

S1‧‧‧first shaft

S2‧‧‧second shaft

R1‧‧‧First storage space

1A is a perspective view showing an exploded view of a key structure according to an embodiment of the present invention.

FIG. 1B is a view showing an exploded view of the key structure of FIG. 1A.

FIG. 2A is a bottom view showing the assembly of the keycap and the metal support of FIG. 1A.

Fig. 2B is a cross-sectional view taken along line X-Y of the key structure of Fig. 1A along the tangent line 2B-2B'.

Figure 3 is an assembled view of the remaining structure below the keycap of Figure 1A.

Fig. 4A is a cross-sectional view taken along line Y-Z of the tangent line 4A-4A' of the key cap of Fig. 1A in an unpressed position.

Fig. 4B is a cross-sectional view taken along line X-Y of the tangent line 4B-4B' when the key cap of Fig. 1A is in an unpressed position.

Fig. 5 is a cross-sectional view taken along line Y-Z of the tangent line 4A-4A' of the key cap of Fig. 1A in a pressed position.

The present invention proposes a key structure, however, the present invention is not limited to the proposed embodiment. The descriptions of the embodiments, such as the details of the structure, the number of structures, the size of the related elements, and the corresponding spatial relationships, are for illustrative purposes only and are not intended to limit the scope of the invention. Therefore, the present invention does not show all possible embodiments, and those having ordinary knowledge in the art can not take off Variations and modifications of the structure of the embodiments are made within the spirit and scope of the disclosure to meet the needs of the actual application. Therefore, the present invention is not limited to the embodiments described below, but may be embodied in various different forms, and other embodiments not suggested by the present invention may also be applied. Furthermore, the size ratios in the drawings are not drawn to the scale of the actual products, and therefore the description and drawings are for illustrative purposes only and are not intended to limit the scope of the invention. In addition, in the specification, like reference numerals are used to refer to the

1A is a perspective view of an exploded view of a key structure 100 in accordance with an embodiment of the present invention. FIG. 1B is a view showing an exploded view of the key structure 100 of FIG. 1A. 2A is a bottom view showing the assembly of the keycap 110 and the metal supports 120, 130 of FIG. 1A. Fig. 2B is a cross-sectional view taken along line X-Y of the key structure 100 of Fig. 1A along the tangential line 2B-2B'. FIG. 3 is an assembled view of the remaining structure under the keycap 110 of FIG. 1A.

Referring to FIGS. 1A and 1B , the button structure 100 can include a key cap 110 , a first metal support member 120 , a second metal support member 130 , a first support base 140 , a second support base 150 , and a film . The switch circuit 170, an elastic body 180 and a bottom plate 190. The bottom plate 190 can be disposed under the keycap 110. The elastic body 180 may be disposed between the keycap 110 and the bottom plate 190. The membrane switch circuit 170 can be disposed on the bottom plate 190. The first support base 140 and the second support base 150 may be disposed on the bottom plate 190. In addition, in the case of the application and the illuminating input device, the button structure 100 can also include a light guide plate 160. The light guide plate 160 is disposed on the membrane switch circuit 170; however, in another embodiment, the light guide plate 160 may not be provided.

The keycap 110 can include a first hook 112 and a second hook 114. The first metal supporting member 120 can include a first pressing portion 121, a first L-shaped bent portion 125 and a first supporting portion 123. The first pressing portion 121 and the first supporting portion 123 are located at the first metal supporting portion. The pieces 120 are on opposite sides of the Z-axis. The second metal support member 130 can include a second pressing portion 131, a second L-shaped bent portion 135, and a second supporting portion 133. The second pressing portion 131 and the second supporting portion 133 are located on the second metal support. The members 130 are on opposite sides of the Z-axis. The first abutment portion 123 can be interconnected with the second abutment portion 133. For example, the first abutting portion 123 and the second abutting portion 133 may each include two extending portions, and the two extending portions of the first supporting portion 123 may overlap the two extending portions of the second supporting portion 133 respectively. It is arranged such that the first abutting portion 123 and the second abutting portion 133 can abut each other and rotate in conjunction.

The first pressing portion 121 and the second pressing portion 131 are connectable to the keycap 110 and can be used to receive the pressing of the keycap 110. For details, please refer to Figures 1A and 2A. The first pressing portion 121 can have a first hook opening 122, and the second pressing portion 131 can have a second hook opening 132. The first hook opening 122 and the second hook opening 132 may correspond to the positional arrangement of the first hook 112 and the second hook 114. As shown in FIG. 2A, when the key cap 110 is assembled to the first metal support member 120 and the second metal support member 130, the first hook 112 and the second hook 114 can respectively enter the first hook opening 122 and The second hooking holes 132 are respectively abutted against the lower surface 120LS of the first metal support 120 and the lower surface 130LS of the second metal support 130.

For example, as shown in FIG. 2A, the first hook 112 can have a first hook column 1121 and a first hook tail 1122, and the second hook 114 can have A second card hook 1141 and a second card tail 1142. The first card tail 1122 and the second card tail 1142 extend in an X-axis direction. When the key cap 110 is assembled to the first metal support member 120 and the second metal support member 130, the first hooking column 1121 and the second latching hook 1141 respectively enter the first hook opening 122 and the second hook opening. 132. Taking FIG. 2B as an example, it shows a schematic view of the second hook 114 entering the second hook opening 132 of the second metal support 130. As shown in FIG. 2B, the second hook tail 114 abuts against the lower surface 130LS of the second metal support 130. Similarly, the first hook tail 1122 along the other side of the Z-axis also abuts the lower surface 120LS of the first metal support 120. In this way, through the design of the above-mentioned card hooks 1121, 1141 and the hook tails 1122, 1142, the key cap 110 can be prevented from falling off the metal supports 120, 130.

Referring to FIG. 3, in order to show the structure under the keycap 110, the drawing of the keycap 110 is omitted in FIG. The first metal support member 120 is rotatably coupled to the first support base 140 as a fulcrum of the first rotating shaft S1, and the second metal support member 130 is rotatably coupled to the second support base 150 by a second rotating shaft S2 as a fulcrum. The first rotating shaft S1 and the second rotating shaft S2 are all parallel to the X-axis direction. The first metal support member 120 and the second metal support member 130 are respectively rotated by the first rotating shaft S1 and the second rotating shaft S2 as a fulcrum, and the key cap 110 (not drawn) is driven between an unpressed position and a pressed position. mobile.

In detail, as shown in FIGS. 1A and 1B, the first support base 140 may have a first pivot shaft 145, and the second support base 150 may have a second pivot shaft 155, and the first pivot shaft 145 and The second pivot shafts 155 are all parallel to the X-axis direction. First The first L-shaped bent portion 125 of the metal support member 120 abuts against the first pivoting shaft 145 to rotatably connect the first metal support member 120 to the first support base 140. The second L-shaped bent portion 135 of the second metal support member 130 abuts against the second pivot shaft 155 to rotatably connect the second metal support member 130 to the second support base 150.

Fig. 4A is a cross-sectional view taken along line Y-Z of the tangent line 4A-4A' of the keycap 110 of Fig. 1A in an unpressed position. Fig. 4B is a cross-sectional view taken along line X-Y of the tangent line 4B-4B' of the keycap 110 of Fig. 1A in an unpressed position. Fig. 5 is a cross-sectional view along line Y-Z of the tangential line 4A-4A' of the keycap 110 of Fig. 1A in a pressed position.

Referring to FIG. 4A, the first pivoting shaft 145 can have a first sidewall 140w, and the second pivoting shaft 155 can have a second sidewall 150w. The first L-shaped bent portion 125 abuts against the first side wall 140w, and the first side wall 140w may be, for example, an arcuate surface. Thereby, the first L-shaped bent portion 125 can be pivotally connected to the first pivotal shaft 145 along the curved surface of the first sidewall 140w, so that the first metal support 120 can be wound around the first pivotal shaft 145. The first side wall 140w is rotated. Similarly, the second L-shaped bent portion 135 abuts against the second side wall 150w, and the second side wall 150w may be, for example, an arcuate surface. Thereby, the second L-shaped bent portion 135 can be pivotally connected to the second pivoting shaft 155 along the curved surface of the second side wall 150w, so that the second metal supporting member 130 can be wound around the second pivoting shaft 155. The second side wall 150w is rotated.

In addition, in the embodiment, the first support base 140 and the second support base 150 and the bottom plate 190 can be combined and fixed without relative displacement. Thereby, when the first metal support 120 and the second metal support 130 respectively surround the first sidewall When the 140w and the second side wall 150w are rotated, the keycap 110 is movable up and down with respect to the bottom plate 190. For example, referring to FIGS. 1B and 4A , the first support base 140 may include a plurality of protrusions 141 , and the second support base 150 may include a plurality of protrusions 151 . The protrusions 141 , 151 are all from the first support base 140 . The lower surface of the second support base 150 extends downward (for example, in the negative Y-axis direction) to be fixed to the plurality of stud passage holes 191 on the bottom plate 190. In another embodiment, the studs 141 and 151 can be fixedly coupled to the corresponding post through holes 191 by means of heat fusion.

Referring to the enlarged view of the area E of FIG. 4A, the first support base 140 and the bottom plate 190 may have a first storage space R1, and the first L-shaped bent portion 125 extends into the first storage space R1, and The first housing space R1 rotates along the first side wall 140w. Similarly, the second support base 150 and the bottom plate 190 can also have a second storage space (not labeled), and the second L-shaped bent portion 135 extends into the second storage space, and can be in the second storage space. The middle center rotates along the second side wall 150w. Through the arrangement of the first and second storage spaces, the space required for the entire button structure 100 can be effectively reduced to facilitate the application of thinning.

In detail, please refer to the enlarged view of the area E of the 1A and 4A drawings. As shown in FIG. 1A, the membrane switch circuit 170 further has a first receiving hole 175 and a second receiving hole 176. In addition, if the button structure 100 includes the light guide plate 160, the light guide plate 160 may have a first light guide plate through hole 165 and a second light guide plate through hole 166. The first receiving hole 175 and the first light guiding plate through hole 165 correspond to the position of the first L-shaped bent portion 125, and the second receiving hole 176 and the second light guiding plate through hole 166 correspond to the second L-shaped bent portion 135 position. Magnification of area E as shown in Figure 4A As shown, the first L-shaped bent portion 125 can pass through the first receiving hole 175 and the first light guide plate through hole 165. That is, the first storage space R1 can be formed by the first receiving hole 175 and the first light guide plate through hole 165, so that the first L-shaped bent portion 125 can be accommodated in the first storage space R1. Similarly, the second L-shaped bent portion 135 can also pass through the second receiving hole 176 and the second light guide plate through hole 166, so that the second L-shaped bent portion 135 can be accommodated in the second receiving space.

Please refer to Figures 4A, 4B and 5. In Fig. 4A, the keycap 110 is held in the undepressed position by an upward restoring force provided by the elastomer 180. For example, in FIG. 4B, the key cap 110 may have a bump 116 that abuts the elastic body 180 when the keycap 110 is in the unpressed position. In this case, the first hook portion 112 and the second hook portion 114 lift the first pressing portion 121 and the second pressing portion 131 upward, and the first supporting portion 123 and the second supporting portion 133 of the other side are It is housed in one of the recessed portions 171 of the membrane switch circuit board 170.

When the keycap 110 is pressed by an external force, and the force can overcome the upward restoring force provided by the elastic body 180 (for example, when the user presses the keycap 110), the keycap 110 is not pressed from the FIG. 4A. The position is moved downward to the pressing position shown in FIG. 5, at which time the bump 116 can press the elastic body 180 to deform the elastic body 180, thereby triggering the membrane switch circuit 170 to generate a corresponding button signal. When the key cap 110 presses down the first pressing portion 121 and the second pressing portion 131 downward, the first metal support 120 and the second metal support 130 are driven and respectively surround the first side wall 140w (or the first pivotal connection) The shaft 145) and the second side wall 150w (or the second pivot shaft 155) rotate, and the first abutting portion 123 and the second abutting portion 133 abut each other upward The first supporting portion 123 and the second supporting portion 133 are moved upward together away from the recessed portion 171.

As shown in FIG. 5, when the keycap 110 is pressed to the pressing position, the first metal support 120 and the second metal support 130 are parallel to the lower surface 110LS of the keycap 110. In more detail, the upper surface 120US of the first metal support 120 and the upper surface 130US of the second metal support 130 are attached to the lower surface 110LS of the keycap 110. Therefore, when the position is pressed, the inner space of the keycap 110 is also accommodated, whereby the overall thickness of the key structure 100 can be reduced.

Referring to FIGS. 1A and 5 simultaneously, the membrane switch circuit 170 can have a first hook channel 172 and a second hook channel 174. In addition, if the button structure 100 includes the light guide plate 160, the light guide plate 160 may have a first hook guiding hole 162 and a second hook guiding hole 164. When the key cap 110 is in the pressing position, the first hook 112 can enter the first hook channel 172 and the first card guiding hole 162, and the second hook 114 can enter the second hook channel 174 and the second hook In the guide hole 164. Since the membrane switch circuit 170 and the light guide plate 160 all have passages for the first hook 112 and the second hook 114 to pass, more key cap stroke space can be provided, and the overall use of the button structure 100 can be effectively reduced. Space to facilitate thinning applications.

When the user no longer presses the keycap 110, the keycap 110 is no longer restricted by external force, so the keycap 110 can be returned upward from the pressing position of FIG. 5 to the 4A by the upward restoring force provided by the elastic body 180. The unpressed position of Figure 4B. At the same time, the first hook 112 and the second hook 114 together lift the first pressing portion 121 and the second pressing portion 131 upward to make the first metal The support member 120 and the second metal support member 130 are pivoted about the first pivoting shaft 145 and the second pivoting shaft 155, respectively, so that the first supporting portion 123 and the second supporting portion 133 of the other side are mutually oriented. The lower abutment is rotated in conjunction with each other and is housed in the recessed portion 171 as shown in FIG. 4A.

As explained above, the key structure proposed by the present invention can be applied to an input device, such as a keyboard, and particularly a thinned keyboard. In practical applications, the button structure can be controlled according to requirements and arranged to form a keyboard. In addition, the button structure proposed by the present invention can also be applied to an input device that can emit light.

In the present invention, since the first metal support member and the second metal support member are disposed, the rigidity of the metal material is better, and the support member made of metal is thinner, so that the application of the thinner button structure can be facilitated. In addition, since the L-shaped bent portion of the first metal support member and the second metal support member extends into the storage space between the corresponding support base and the bottom plate, and respectively abuts against the side wall of the corresponding support seat, so that A metal support member and a second metal support member are rotatable relative to the corresponding support seat by the L-shaped bent portion, thereby restricting the keycap from moving straight up and down relative to the bottom plate. When the keycap is pressed to a pressing position, the inner space of the keycap can also be accommodated by the components below the keycap, so that the space can be effectively utilized. Furthermore, since the membrane switch circuit and the light guide plate both have passages for the hooks on the keycaps to pass, more cap travel space can be provided, and the space required for the overall button structure is effectively reduced, thereby facilitating Thinning application.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. General knowledge in the technical field to which the present invention pertains Various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100‧‧‧Key structure

110‧‧‧Key Cap

112‧‧‧First card hook

114‧‧‧Second card

116‧‧‧Bumps

120‧‧‧First metal support

121‧‧‧First press

123‧‧‧First support

125‧‧‧First L-shaped bend

130‧‧‧Second metal support

131‧‧‧Second press

133‧‧‧Second support

135‧‧‧Second L-shaped bend

140‧‧‧First support

140w‧‧‧first side wall

141‧‧‧Bump

145‧‧‧First pivot shaft

150w‧‧‧second side wall

151‧‧‧Bump

155‧‧‧Second pivot shaft

160‧‧‧Light guide plate

165‧‧‧First light guide through hole

166‧‧‧Second light guide through hole

170‧‧‧ Membrane Switch Circuit

171‧‧‧Depression

175‧‧‧First receiving hole

176‧‧‧Second receiving hole

180‧‧‧ Elastomers

190‧‧‧floor

191‧‧‧Budded through hole

E‧‧‧ area

R1‧‧‧First storage space

Claims (19)

A key structure includes: a key cap; a bottom plate disposed under the key cap; an elastic body disposed between the key cap and the bottom plate, the elastic body providing an upward restoring force to the key cap; The membrane switch circuit is disposed on the bottom plate for being triggered to generate a button signal; a first support base and a second support base, wherein the first support base and the second support base are disposed on the bottom plate, The first support base has a first side wall, the first support base and the bottom plate have a first storage space, the second support base has a second side wall, and the second support base and the bottom plate have a second a first metal support member includes a first pressing portion, a first L-shaped bent portion and a first supporting portion, the first pressing portion is coupled to the key cap, the first L-shaped bend The folded portion abuts the first side wall and extends into the first receiving space to rotatably connect the first metal support to the first support seat; and a second metal support member includes a second a pressing portion, a second L-shaped bent portion and a second supporting portion, a second pressing portion is coupled to the keycap, the second L-shaped bent portion abuts the second sidewall, and extends into the second receiving space, so that the second metal supporting member is rotatably connected to the second a support base, and the second support portion is coupled to the first support portion; wherein, when the key cap is pressed by an external force, the key cap is from an unpressed position Pressing the first pressing portion and the second pressing portion downwardly, respectively, driving the first metal supporting member and the second metal supporting member to rotate around the first side wall and the second side wall, respectively, and the first supporting portion The second portion and the second abutting portion are coupled to each other for rotation; wherein, when the external force is released, the elastic body provides the upward restoring force to drive the keycap to return to the undepressed position. The button structure of claim 1, wherein the first support base and the second support base comprise a plurality of protrusions, the protrusions being from the first support base and the second support base The surface extends downward to be fixed to the bottom plate. The button structure of claim 1, wherein the first metal support and the second metal support are parallel to the key cap when the keycap is pressed from the unpressed position to a pressed position. Under the surface. The button structure of claim 1, wherein the first metal support and the upper surface of the second metal support are attached when the keycap is pressed from the unpressed position to a pressed position. On the lower surface of the keycap. The key structure of the first aspect of the invention, wherein the key cap comprises a first hook and a second hook, the first pressing portion has a first hook opening, and the second pressing portion has a second hooking hole, the first hook and the second hook respectively entering the first hook opening and the second hook opening, respectively abutting the first hook a metal support and a lower surface of the second metal support. The button structure of claim 5, wherein the membrane switch circuit further has a first hook channel and a second hook channel, when the key cap is pressed from the unpressed position to a pressed position The first hook and the second hook respectively enter the first hook channel and the second hook channel. The button structure as claimed in claim 1, wherein the membrane switch circuit further comprises a recessed portion, wherein the recessed portion receives the first abutting portion and the second support when the keycap is in the unpressed position Relying on the Ministry. The button structure of claim 1, wherein the membrane switch circuit further has a first receiving hole and a second receiving hole, the first L-shaped bent portion passes through the first receiving hole, and the first L-shaped bent portion passes through the first receiving hole The second L-shaped bent portion passes through the second receiving hole. The button structure as described in claim 8 further includes a light guide plate disposed on the membrane switch circuit. The button structure of claim 9, wherein the light guide plate has a first light guide plate through hole and a second light guide plate through hole, and the first receiving hole and the first light guide plate through hole form the first a first L-shaped bent portion is received in the first receiving space, and the second receiving hole and the second light guiding plate through hole form the The second storage space is received in the second storage space. A button structure includes: a keycap having a first hook and a second hook, the first hook having a first hook and a first hook, the second hook having a a second card hook and a second card hook tail, the first card hook tail and the second card hook tail both extend in an X-axis direction; a bottom plate is disposed under the key cap; an elastic body, Between the keycap and the bottom plate, the elastic body provides an upward restoring force to the key cap; a membrane switch circuit is disposed on the bottom plate for being triggered to generate a button signal; a first support base And a second support base, the first support base and the second support base are disposed on the bottom plate, the first support base has a first pivot shaft, and the second support base has a second pivot shaft. The first pivoting axis and the second pivoting axis are parallel to the X-axis direction; a first metal support member includes a first hook opening, a first L-shaped bent portion and a first support The first hook hook enters the first hook opening, and the first hook end abuts against the lower surface of the first metal support, the first The L-shaped bent portion abuts the first pivoting shaft to rotatably connect the first metal support member to the first support base; and a second metal support member includes a second hook opening, a second L-shaped bend And a second supporting portion, the second hooking hook enters the second hook opening, the second hook tail abuts against the lower surface of the second metal support, the second L-shaped bend The folding portion abuts the second pivoting shaft, the second metal supporting member is rotatably coupled to the second supporting seat, and the second supporting portion is coupled to the first supporting portion; wherein, when When the key cap is pressed by an external force, the key cap presses the first hook opening and the second hook opening downward from an unpressed position to drive the first metal support and the second metal support The pieces rotate about the first pivoting axis and the second pivoting axis, respectively, and the first abutting portion and the second abutting portion abut each other and rotate in rotation; wherein, when the external force is released, the elasticity The body provides the upward restoring force to drive the keycap to return to the unpressed position, thereby driving the first metal support and the second metal support to rotate. The first pivoting shaft and the second pivoting shaft respectively include a first side wall and a second side wall, and the first L-shaped bending part is pivotally connected to the button structure. The first side wall is pivotally connected to the second side wall. The button structure of claim 12, wherein when the key cap is pressed from the unpressed position to a pressing position, the first metal support member surrounds the first pivoting shaft as a fulcrum The first side wall rotates, and the second metal support rotates around the second side wall with the second pivot shaft as a fulcrum. The button structure of claim 11, wherein the first metal support and the second metal support are parallel to the key cap when the keycap is pressed from the unpressed position to a pressed position. Under the surface. The button structure of claim 11, wherein when the keycap is pressed from the unpressed position to a pressing position, the upper surface of the first metal support and the second metal support are attached. On the lower surface of the keycap. The button structure of claim 11, wherein the membrane switch circuit further has a first hook channel and a second hook channel, when the key cap is pressed from the unpressed position to a pressed position The first hook and the second hook respectively enter the first hook channel and the second hook channel. The button structure of claim 11, wherein the membrane switch circuit further comprises a recessed portion, the recessed portion receiving the first abutting portion and the second support when the keycap is in the unpressed position Relying on the Ministry. The button structure of claim 11, further comprising a light guide plate disposed on the membrane switch circuit. The button structure of claim 18, wherein the light guide plate has a first card guiding hole and a second card guiding hole, when the key cap is from the unpressed position When the device is pressed to a pressing position, the first hook and the second hook respectively enter the first card guiding hole and the second card guiding hole.