TWI573159B - Keyswitch and keyboard thereof - Google Patents

Description

Button and its keyboard

The invention relates to a button and a keyboard thereof, in particular to a button formed on a support member of a supporting device and movably engaging with each other, and the linking portion has a long and short flat tooth which can be overlapped with each other and a keyboard thereof.

In terms of current personal computer usage habits, the keyboard is one of the indispensable input devices for entering text, symbols or numbers. Moreover, the consumer electronics products that are in contact with everyday life or the large-scale processing equipment used in the industry need to have a button structure as an input device to operate the above-mentioned electronic products and processing equipment.

Please refer to FIG. 1, which is a schematic cross-sectional view of the prior art button 1. As shown in FIG. 1, the button 1 includes a bottom plate 10, a keycap 12, a circuit board 14, a lifting support device 16, and an elastic member 18. The circuit board 14 is disposed on the bottom plate 10. The lifting support device 16 is disposed between the keycap 12 and the bottom plate 10 for supporting the keycap 12. The elastic member 18 is also disposed between the keycap 12 and the bottom plate 10, so that after the keycap 12 is pressed by the user, the triggering portion 19 of the elastic member 18 triggers the switch 15 on the circuit board 14, thereby executing the user. The function you want to enter.

However, since the above-described lifting support device 16 designed with a scissor foot causes the button 1 to require a large height space, thereby further limiting the height of the button 1, it is disadvantageous for the application of the keyboard thinning. At present, the common method for solving the above problem is to replace the scissor foot design with the design of the two types of support members connected to the key cap and the bottom plate by V-shaped joints, and the design usually ends at the ends of the two support members. The gear joint design adopts the gear meshing design to achieve the purpose of linkage between the two support members when the keycap moves up and down. However, due to the complicated design of the gear structure, the lifting support device is often time-consuming and labor-intensive in manufacturing, thereby causing the manufacturing cost of the keyboard to rise. .

Therefore, one of the objects of the present invention is to provide a button and a keyboard thereof which are formed with movable joints that are movably coupled to each other on the support member of the supporting device and which have overlapping lengths and flat teeth, and a keyboard thereof to solve the above problems. .

According to an embodiment, the button of the present invention includes a bottom plate, a keycap, a support device, and a rebound device. The supporting device is disposed between the bottom plate and the keycap and includes a first supporting member and a second supporting member. The first support member and the second support member are movably coupled to the key cap and the bottom plate such that the key cap is pivoted to an unpressed position and a press with the first support member and the second support member Moving between positions, the first support member has a first linkage portion, and the second support member has a second linkage portion, the first linkage portion has a first short flat tooth and a first long flat tooth, the first support portion The second interlocking portion has a second short flat tooth and a second long flat tooth extending toward the second long flat tooth to be superposed on the second long flat tooth and the second short flat tooth is The first elongate tooth is extended to be superposed on the first elongate tooth such that the first linkage portion and the second linkage portion are movably engaged with each other when the keycap is pressed by an external force or the external force is released The first support member and the second support member are coupled to each other. When the key cap is pressed to the pressing position by an external force, one of the first front flat faces of the first short flat teeth is flush with and coplanar with one of the second front end faces of the second short flat teeth. When the key cap returns from the pressing position to the unpressed position, the first short flat tooth is abutting on the first edge of the second long flat tooth as a fulcrum at the second long flat tooth Uplifting, the second short flat tooth is lifted on the first long flat tooth with the second front end surface abutting on a second side line of the first long flat tooth, and the first edge line and the first edge line The two sides are collinear. The rebounding device is disposed between the keycap and the first supporting member for providing an elastic force to move the keycap from the pressing position to the unpressed position and to interlock the first linking portion with the second supporting portion The Ministry maintains a bond.

According to another embodiment, the keyboard of the present invention includes a backplane and a plurality of buttons. The plurality of buttons are disposed on the bottom plate, and at least one of the plurality of buttons includes a keycap, a supporting device, and a rebound device. The supporting device is disposed between the bottom plate and the keycap and includes a first supporting member and a second supporting member, wherein the first supporting member and the second supporting member are movably coupled to the keycap and the bottom plate Moving the keycap between the unsupported position and a pressing position of the first support member and the second support member, the first support member having a first linkage portion, the second support member having a second linking portion having a first short flat tooth and a first long flat tooth, the second linking portion having a second short flat tooth and a second long flat tooth, the first short flat tooth Extending to the second elongate tooth to be superposed on the second elongate tooth and the second short flat tooth extending toward the first elongate tooth to be superposed on the first elongate tooth, so that the first linkage The second linking portion and the second supporting portion are movably engaged with each other to cause the first supporting member to interlock with the second supporting member when the key cap is pressed by an external force or the external force is released. When the key cap is pressed to the pressing position by an external force, one of the first front flat faces of the first short flat teeth is flush with and coplanar with one of the second front end faces of the second short flat teeth. When the key cap returns from the pressing position to the unpressed position, the first short flat tooth is abutting on the first edge of the second long flat tooth as a fulcrum at the second long flat tooth Uplifting, the second short flat tooth is lifted on the first long flat tooth with the second front end surface abutting on a second side line of the first long flat tooth, and the first edge line and the first edge line The two sides are collinear. The rebounding device is disposed between the keycap and the first supporting member for providing an elastic force to move the keycap from the pressing position to the unpressed position and to interlock the first linking portion with the second supporting portion The Ministry maintains a bond.

In summary, in the present invention, the first interlocking portion is maintained in contact with the second linking portion by the elastic force provided by the rebounding device, and the first front end surface of the first short flat tooth of the first linking portion is externally pressed at the keycap. Pressing to the pressing position is coplanar with the second front end face of the second short flat tooth of the second linking portion, and the first short flat tooth and the second short flat tooth are shared by the first side line and the second side line when the external force is released The design of the wire is respectively raised on the second long flat tooth and the first long flat tooth, instead of the gear meshing interlocking design adopted in the prior art, so that the first support member and the second support member of the support device are at the key cap. When it is pressed by an external force or the external force is released, it is linked. In this way, the present invention can solve the problem that the lifting support device is time-consuming and labor-intensive in manufacturing due to the complicated design of the gear structure, and the manufacturing cost of the keyboard is effectively reduced. .

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

Please refer to FIG. 2, which is a perspective view of a keyboard 100 according to an embodiment of the present invention. As shown in FIG. 2, the keyboard 100 includes a bottom plate 102 and a plurality of buttons 104. The button 104 is disposed on the bottom plate 102. The button 104 is used for the user to press, thereby performing the function that the user desires to input. In this embodiment, the keyboard 100 can be a slim keyboard, and the button 104 can be a thin button, but not limited thereto. The support linkage design proposed by the present invention can be applied to at least one of the plurality of buttons 104, the number of which depends on the actual application of the keyboard 100, and the following is performed for one of the buttons 104 having the design. Description, as for the structural design of other buttons 104 having the same design, it can be deduced by analogy.

Please refer to FIG. 2, FIG. 3 and FIG. 4 . FIG. 3 is a perspective view of the button 104 of FIG. 2 after the key cap 106 is omitted, and FIG. 4 is the bottom plate 102 and the key cap 106 of FIG. 3 and the supporting device. The assembly diagram of 108, in order to clearly show the mechanical connection relationship between the bottom plate 102 and the keycap 106 and the supporting device 108, the bottom plate 102 is only partially shown in the fourth figure by the connecting seat 103. As shown in FIG. 2, FIG. 3, and FIG. 4, the button 104 includes a keycap 106, a supporting device 108, and a rebounding device 109. The supporting device 108 is disposed between the bottom plate 102 and the keycap 106 and includes the first support. The first support member 110 and the second support member 112 are movably coupled to the keycap 106 and the bottom plate 102 such that the keycap 106 is associated with the first support member 110 and the second support member 112. The pivoting moves between the unpressed position and the pressed position.

In this embodiment, the first support member 110 has a first connecting portion 114, a second connecting portion 116, and a first linking portion 118. The second supporting member 112 has a third connecting portion 120, a fourth connecting portion 122, and The second connecting portion 124 has a connecting base 103. The connecting base 103 is respectively formed with a shaft hole 126 and a slot 128 at a position corresponding to the second connecting portion 116 and the fourth connecting portion 122. The first connecting portion 114 is slidably Connected to the keycap 106 (for example, in such a manner that the sliding shaft 115 of the first connecting portion 114 as shown in FIG. 4 is slidably disposed in the sliding groove 107 of the keycap 106), the second connecting portion 116 is slidably disposed In the slot 128, the third connecting portion 120 is pivotally connected to the keycap 106, the fourth connecting portion 122 is pivotally disposed in the shaft hole 126, and the first linking portion 118 is coupled to the second linking portion 124 movably engages each other to cause the first support member 110 to be coupled with the second support member 112 when the keycap 106 is pressed or released, wherein as shown in FIG. 3, the first linkage portion 118 is linked with the second linkage portion The portions 124 are joined to each other in a manner of overlapping abutting.

In more detail, referring to FIG. 3 and FIG. 5, FIG. 5 is an exploded view of the first support member 110 and the second support member 112 of the support device 108 of FIG. 2, as shown in FIG. 3 and FIG. The first interlocking portion 118 has a first short flat tooth 130 and a first long flat tooth 132. The second interlocking portion 124 has a second short flat tooth 134 and a second long flat tooth 136. The second elongate teeth 136 are formed to be superposed on the second elongate teeth 136 and the second short flat teeth 134 are extended toward the first elongate teeth 132 to be superposed on the first elongate teeth 132 such that the first linkage portion 118 The first supporting member 110 and the second supporting member 112 are interlocked when the keycap 106 is pressed by an external force or the external force is released when the second interlocking portion 124 is movably engaged with each other.

In addition, as can be seen from FIG. 4, in this embodiment, the rebounding device 109 can include a stopper 138 and an elastic member 140. The stopper 138 is formed on the keycap 106 and can be a card slot, and the elastic member The first support member 110 is formed at a position corresponding to the stopper 138 and can be a pivot (the one end of which can be a free end, but is not limited thereto, and the two ends can be connected to the first support member 110. Both are fixed end pivot designs) are pivotally disposed within the card slot. In a practical application, please refer to FIG. 6 , which is a cross-sectional view of the button 104 of the keyboard 100 of FIG. 2 along a section line XX. As shown in FIG. 6 , the keyboard 100 may further include a circuit board 142 , and the circuit board 142 . It can be a thin film circuit board, a flexible circuit board or a printed circuit board having a switch 143 corresponding to the trigger point 111 of the support member 110, such as a membrane switch or other trigger switch, whereby the button When the keycap 106 of 104 is pressed to the pressing position, the trigger point 111 of the first support member 110 triggers the switch 143 on the circuit board 142 to perform the function desired by the user.

Please refer to FIG. 6 , FIG. 7 , FIG. 8 , FIG. 9 , FIG. 10 , and FIG. 11 , and FIG. 7 is a cross-sectional view showing the key cap 106 of FIG. 6 pressed to the pressing position, and FIG. The figure is a schematic view of the bottom plate 102 of FIG. 4 and the key cap 106 and the supporting device 108 at another viewing angle. FIG. 9 is the key cap 106 of FIG. 6 when pressed to the pressing position, and the bottom plate 102 and the supporting device 108. In the bottom view, FIG. 10 is an enlarged schematic view of the first linking portion 118 and the second linking portion 124 of FIG. 3, and FIG. 11 is the first linking portion 118 and the second linking portion 124 of FIG. 10 are An enlarged schematic view when pressed to the pressed position, wherein in order to clearly show the mechanical connection relationship between the bottom plate 102 and the keycap 106 and the supporting device 108, the bottom plate 102 is only partially illustrated by the connecting seat 103 in FIG.

As shown in FIGS. 6 to 11, when the keycap 106 is not pressed, the stopper 138 abuts against the elastic member 140 to maintain the keycap 106 in the undepressed position as shown in FIG. When the keycap 106 is pressed by an external force, the second support member 112 pivots relative to the keycap 106 and the bottom plate 102 with the fourth connecting portion 122 as a fulcrum, and the first support member 110 slides relative to the keycap 106 and the bottom plate 102, thereby making the key The cap 106 can be moved downward from the unpressed position as shown in FIG. 6 to the pressing position as shown in FIG. 7 as the first support member 110 slides and the second support member 112 pivots, thereby triggering via the trigger Point 111 triggers switch 143 of circuit board 142 to perform the corresponding input function. As the first support member 110 slides relative to the keycap 106 and the bottom plate 102, the elastic member 140 (pivot) on the first support member 110 is biased by the stopper member 138 (card slot) from the first The state in which the stopper 138 abuts as shown in Fig. 8 is changed to the state of flexural deformation as shown in Fig. 9. At the same time, as shown in FIG. 11 , when the key cap 106 is pressed to the pressing position by the external force, the first front end surface 131 of the first short flat tooth 130 of the first linking portion 118 and the second short front portion 124 are second short. The second front end face 135 of the flat teeth 134 is flush and coplanar.

When the external force is released, the elastic member 140 (pivot) which is biased and deformed by the stopper 138 (slot) can provide a return elastic force to drive the first support member 110 to slide relative to the keycap 106. At the same time, as shown in FIG. 10, the first short flat teeth 130 abut the first side edge 133 of the second long flat tooth 136 with the first front end surface 131 as a fulcrum at the second point as the first support member 110 slides. The long flat teeth 136 are lifted up, and the second short flat teeth 134 are lifted on the first long flat teeth 132 with the second front end surface 135 abutting against the second side line 137 of the first long flat teeth 132, and the first side line 133 is lifted. It is on the same axis L as the second edge line 137 and is collinear. In this way, through the interlocking design of the first linking portion 118 and the second linking portion 124, the second supporting member 112 is opposite to the key cap 106 with the fourth connecting portion 122 as a fulcrum as the first supporting member 110 slides. And the bottom plate 102 is pivoted so that the keycap 106 is moved back to the unpressed position as shown in Fig. 6 by the pressing position as shown in Fig. 7 to produce an automatic returning effect.

In practical applications, the above-mentioned design that biases the elastic member by the stopper of the first support member to provide a return elastic force to the first support member can also be applied to the second support member of the keycap and the support device. For the purpose of providing the elastic member to provide the elastic force to the second support member, the related description can be referred to the analogy of the above embodiment, and details are not described herein again. In addition, the position and structural design of the stopper and the elastic member are not limited to the above embodiment. For example, in another embodiment, the stopper may be formed on the support member and may be a card slot, and the elastic member is formed. The pivoting member may be pivotally disposed in the card slot at a position corresponding to the stopper of the keycap; in another embodiment, the stopper may be formed on the keycap and may be a bump, the elastic member Formed at a position corresponding to the stopper of the support member, it may be an elastic block to interfere with the bump. For other embodiments of the derivative changes, reference may be made to the analogy of the above embodiments, and details are not described herein again.

It should be noted that the design of the rebounding device is not limited to the above embodiment, that is, as long as the elastic force is provided to move the keycap from the pressing position back to the unpressed position and the first linking portion and the second linking portion are maintained. The abutting rebound device design can be applied to the present invention. For example, in another embodiment, the rebound device can be composed of a spring and an elastic body, and the spring is coupled to the key cap and the first support member. The elastic force is provided to the first supporting member to maintain the first linking portion and the second linking portion to maintain the abutment, and the elastic body is disposed between the key cap and the bottom plate for providing the elastic driving keycap by pressing The position moves back to the unpressed position.

In addition, the connection design of the first support member and the second support member to the key cap and the bottom plate may not be limited to the above embodiment, in other words, as long as the first support member and the second support member are movably connected to the key cap and The bottom plate is designed such that the first support member can slide relative to the key cap as the key cap moves up and down, which can be used in the present invention. For example, in another embodiment, the first connecting portion of the first supporting member is slidably coupled to the keycap in a horizontal moving direction (for example, the sliding shaft and the sliding slot are mentioned in the above embodiment) The second connecting portion of the first supporting member is slidably coupled to the bottom plate in a horizontal moving direction (for example, the pivoting and the slot are engaged in the above embodiment), and the third connecting portion of the second supporting member is along The horizontal moving direction is slidably coupled to the keycap (for example, the sliding shaft and the sliding groove are mentioned in the above embodiment), and the fourth connecting portion of the second supporting member is pivotally connected to the bottom plate (for example, the above implementation) As mentioned, the pivoting is coordinated with the shaft hole, whereby the second support member is slidable relative to the keycap as the keycap moves up and down, and the first support member is slidable relative to the keycap and the bottom plate. Thereby producing the same effect as the above embodiment (i.e., the design that biases the resilient member against the support member by the biasing member to provide a resilient spring force to the support member); or, in another embodiment, First support The first connecting portion is slidably coupled to the keycap, the second connecting portion of the first supporting member is slidably coupled to the bottom plate, and the third connecting portion of the second supporting member is slidably coupled to the keycap, and the second supporting member is The fourth connecting portion is slidably coupled to the bottom plate, whereby the first support member and the second support member are slidable relative to the key cap and the bottom plate as the key cap moves up and down, thereby producing the same as the above embodiment (ie, making the elasticity The piece is biased by the stop as the support slides to provide the same effect of restoring the spring force to the design of the support. For other embodiments of the derivative changes, reference may be made to the analogy of the above embodiments, and details are not described herein again.

In summary, in the present invention, the first interlocking portion is maintained in contact with the second linking portion by the elastic force provided by the rebounding device, and the first front end surface of the first short flat tooth of the first linking portion is externally pressed at the keycap. Pressing to the pressing position is coplanar with the second front end face of the second short flat tooth of the second linking portion, and the first short flat tooth and the second short flat tooth are shared by the first side line and the second side line when the external force is released The design of the wire is respectively raised on the second long flat tooth and the first long flat tooth, instead of the gear meshing interlocking design adopted in the prior art, so that the first support member and the second support member of the support device are at the key cap. When it is pressed by an external force or the external force is released, it is linked. In this way, the present invention can solve the problem that the lifting support device is time-consuming and labor-intensive in manufacturing due to the complicated design of the gear structure, and the manufacturing cost of the keyboard is effectively reduced. . 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.

10, 102‧‧‧ bottom plate

12, 106‧‧‧ key cap

14, 142‧‧‧ circuit board

15, 143‧‧ ‧ switch

16‧‧‧ Lifting support device

18‧‧‧Flexible parts

19‧‧‧Trigger

100‧‧‧ keyboard

103‧‧‧Connecting seat

104‧‧‧ button

107‧‧‧Chute

108‧‧‧Support device

109‧‧‧Rebound device

110‧‧‧First support

111‧‧‧Trigger point

112‧‧‧second support

114‧‧‧First connection

115‧‧‧Sliding shaft

116‧‧‧Second connection

118‧‧‧First Linkage Department

120‧‧‧ Third connection

122‧‧‧fourth connection

124‧‧‧Second Linkage Department

126‧‧‧Axis hole

128‧‧‧ slots

130‧‧‧First short flat teeth

131‧‧‧First front end face

132‧‧‧First flat teeth

133‧‧‧ first line

134‧‧‧Second short flat teeth

135‧‧‧second front face

136‧‧‧Second long flat teeth

137‧‧‧Second line

138‧‧‧stops

140‧‧‧Flexible parts

L‧‧‧ axis

Figure 1 is a schematic cross-sectional view of a prior art button. 2 is a perspective view of a keyboard according to an embodiment of the present invention. Fig. 3 is a perspective view showing the key of the second figure after the key cap is omitted. Figure 4 is a schematic view showing the assembly of the bottom plate and the key cap and the supporting device of Figure 3. Figure 5 is a schematic exploded view of the first support member and the second support member of the support device of Figure 2. Figure 6 is a cross-sectional view of the key of the keyboard of Figure 2 along section line X-X. Fig. 7 is a schematic cross-sectional view showing the key cap of Fig. 6 pressed to the pressing position. Figure 8 is a schematic view showing the assembly of the bottom plate and the key cap of Figure 4 and the supporting device in another viewing angle. Fig. 9 is a bottom plan view of the keycap of Fig. 6 with the bottom plate and the supporting device when pressed to the pressing position. Fig. 10 is an enlarged schematic view showing the first interlocking portion and the second linking portion of Fig. 3. Fig. 11 is an enlarged schematic view showing the first interlocking portion and the second linking portion of Fig. 10 when the keycap is pressed to the pressing position.

<TABLE border="1" borderColor="#000000" width="_0037"><TBODY><tr><td> 108 </td><td> Supporting device</td><td> 110 </td> <td> First support </td></tr><tr><td> 112 </td><td> Second support </td><td> 118 </td><td> First Interlocking Department</td></tr><tr><td> 124 </td><td> Second Interlocking Department</td><td> 130 </td><td> First Short Flat Tooth </ Td></tr><tr><td> 131 </td><td> first front end face</td><td> 132 </td><td> first long flat tooth</td></tr ><tr><td> 133 </td><td> First line</td><td> 134 </td><td> Second short flat tooth</td></tr><tr> <td> 135 </td><td> Second front face </td><td> 136 </td><td> Second long flat tooth</td></tr><tr><td> 137 < /td><td> second edge</td><td> L </td><td> axis</td></tr></TBODY></TABLE>

Claims (10)

A button comprising: a bottom plate; a key cap; a supporting device disposed between the bottom plate and the key cap and comprising a first support member and a second support member, the first support member slidably Connecting to the keycap and the bottom plate and the second support member are movably coupled to the keycap and the bottom plate to pivot the keycap with the first support member and the second support member in an unpressed position Moving between a pressing position, the first supporting member has a first linking portion, and the second supporting member has a second linking portion, the first linking portion having a first short flat tooth and a first long flat tooth The second interlocking portion has a second short flat tooth and a second long flat tooth extending toward the second long flat tooth to be superposed on the second long flat tooth and the second short flat The teeth extend toward the first elongate teeth to be superposed on the first elongate teeth, such that the first linkage portion and the second linkage portion are movably engaged with each other, and the key cap is pressed by an external force or the external force Producing the first support member and the second support member when released Moving, when the key cap is pressed to the pressing position by an external force, one of the first front flat faces is aligned with the second front end face of the second short flat teeth and is coplanar, when the key When the cap returns from the pressing position to the unpressed position, the first short flat tooth is lifted on the second long flat tooth with the first front end surface abutting against the first side line of the second long flat tooth as a fulcrum The second short flat tooth is lifted on the first long flat tooth with the second front end surface abutting on the second side line of the first long flat tooth, and the first edge line is shared with the second edge line And a rebounding device disposed between the keycap and the first support member for providing an elastic force to move the keycap from the pressing position to the undepressed position and to the first linking portion Maintaining abutment with the second linkage portion, the rebound device includes a stop member and an elastic member, the stop member For forming a card slot on the key cap, the elastic member is a pivot formed on the first support member, the pivot shaft is pivotally disposed in the card slot; when the key cap is not pressed The card slot abuts the pivot to maintain the keycap in the unpressed position; when the keycap is pressed by the external force, the pivoting of the first support member and the second support member is unpressed When the position is moved to the pressing position, the first support member slides relative to the keycap to bias the card slot to deflect the pivot, and when the external force is released, the pivot is biased by the slot The spring force drives the first support member to slide relative to the keycap such that the keycap moves from the pressed position back to the undepressed position. The button of claim 1, wherein the first support member further has a first connecting portion and a second connecting portion, the second supporting member further has a third connecting portion and a fourth connecting portion, the first connecting portion a connecting portion slidably coupled to the keycap, the second connecting portion slidably coupled to the bottom plate, the third connecting portion being pivotally coupled to the keycap, the fourth connecting portion being pivotally coupled In the bottom plate, when the key cap is pressed by the external force, the second support member pivots relative to the key cap and the bottom plate with the fourth connecting portion as a fulcrum, and the first support member is opposite to the key cap and the bottom plate slide. The button of claim 1, wherein the first support member further has a first connecting portion and a second connecting portion, the second supporting member further has a third connecting portion and a fourth connecting portion, the first connecting portion a connecting portion slidably coupled to the keycap, the second connecting portion slidably coupled to the bottom plate, the third connecting portion slidably coupled to the keycap, the fourth connecting portion being pivotally coupled to The bottom plate, when the key cap is pressed by the external force, the first support member and the second support member slide relative to the key cap and the bottom plate. The button of claim 2 or 3, wherein the bottom plate has a connecting seat, the connecting seat pair A shaft hole and a slot are respectively formed at positions of the second connecting portion and the fourth connecting portion, the second connecting portion is slidably disposed in the slot, and the fourth connecting portion is pivotally disposed on the slot Inside the shaft hole. The button of claim 1, wherein the first support member has a first connecting portion and a second connecting portion, the second supporting member has a third connecting portion and a fourth connecting portion, the first connecting portion The second connecting portion is slidably coupled to the bottom plate, the third connecting portion is slidably coupled to the key cap, and the fourth connecting portion is slidably coupled to the bottom plate. When the keycap is pressed by the external force, the first support member and the second support member slide relative to the keycap and the bottom plate. A keyboard comprising: a bottom plate; and a plurality of buttons disposed on the bottom plate, at least one of the plurality of buttons comprising: a key cap; a supporting device disposed on the bottom plate and the key cap And a first support member and a second support member, the first support member is slidably coupled to the key cap and the bottom plate and the second support member are movably coupled to the key cap and the bottom plate to enable The keycap moves with the first support member and the second support member pivoted between an unpressed position and a pressed position, the first support member having a first linkage portion, the second support member having a a second interlocking portion having a first short flat tooth and a first long flat tooth, the second linking portion having a second short flat tooth and a second long flat tooth, the first short flat tooth The second elongate tooth is formed to be superposed on the second elongate tooth and the second short flat tooth is extended toward the first elongate tooth to be superposed on the first elongate tooth so that the first linkage portion With the The second linking portion is movably engaged with each other to cause the first supporting member to be interlocked with the second supporting member when the key cap is pressed by an external force or the external force is released, when the key cap is pressed by an external force to the pressing In position, one of the first short flat teeth has a first front end face that is flush with and coplanar with one of the second short flat teeth, and when the key cap returns from the pressed position to the unpressed position, The first short flat tooth is lifted on the second long flat tooth with the first front end surface abutting against a first side line of the second long flat tooth, and the second short flat tooth is opposite to the second front flat surface a second edge of the first flat tooth is pivoted on the first flat tooth, and the first edge is collinear with the second edge; and a rebound device is disposed on the button Between the cap and the first support member, a spring force is provided to move the keycap from the pressing position to the unpressed position and the first linking portion and the second linking portion are maintained in abutment, the rebound The device comprises a stop member and an elastic member, wherein the stop member is a card slot formed on the key cap, the elastic member a pivot shaft formed on the first support member, the pivot shaft is pivotally disposed in the card slot; when the key cap is not pressed, the card slot abuts the pivot shaft to make the key cap Maintaining in the unpressed position; when the keycap is pressed by the external force and the pivoting of the first support member and the second support member is moved from the unpressed position to the pressed position, the first support member is opposite to the pressed position The keycap slides to bias the slot to deflect the pivot. When the external force is released, the pivot biased by the slot provides the spring force to drive the first support to slide relative to the keycap The keycap is moved from the pressed position back to the unpressed position. The keyboard of claim 6, wherein the first support member further has a first connecting portion and a second connecting portion, the second supporting member further has a third connecting portion and a fourth connecting portion, the first connecting portion a connecting portion slidably coupled to the keycap, the second connecting portion slidably coupled to the bottom plate, the third connecting portion being pivotally coupled to the keycap, the fourth connecting portion being pivotally coupled to The bottom plate, when the key cap is pressed by the external force, the second support member pivots relative to the key cap and the bottom plate with the fourth connecting portion as a fulcrum, and the first support member slides relative to the key cap and the bottom plate . The keyboard of claim 6, wherein the first support member further has a first connecting portion and a second connecting portion, the second supporting member further has a third connecting portion and a fourth connecting portion, the first connecting portion a connecting portion slidably coupled to the keycap, the second connecting portion slidably coupled to the bottom plate, the third connecting portion slidably coupled to the keycap, the fourth connecting portion being pivotally coupled to The bottom plate, when the key cap is pressed by the external force, the first support member and the second support member slide relative to the key cap and the bottom plate. The keyboard of claim 7 or 8, wherein the bottom plate has a connecting seat, the connecting seat corresponding to the second connecting portion and the fourth connecting portion are respectively formed with a shaft hole and a slot, the second The connecting portion is slidably disposed in the slot, and the fourth connecting portion is pivotally disposed in the shaft hole. The keyboard of claim 6, wherein the first support member has a first connecting portion and a second connecting portion, the second supporting member has a third connecting portion and a fourth connecting portion, the first connecting portion The second connecting portion is slidably coupled to the bottom plate, the third connecting portion is slidably coupled to the key cap, and the fourth connecting portion is slidably coupled to the bottom plate. When the keycap is pressed by the external force, the first support member and the second support member slide relative to the keycap and the bottom plate.