TW201740407A - Keyswitch and keyboard thereof - Google Patents

Abstract

A keyswitch includes a cap, a board, a first magnetic member disposed on the board, and a support device including first and second support members movably connected to the cap and the board. The first support member has a second magnetic member with a buffer structure formed thereon. A vertical distance between the buffer structure and the board is less than a vertical distance between the first and second magnetic members. When the cap is released, a magnetic attraction force between the first and second magnetic members drives the second magnetic member to approach the first magnetic member, so as to make the cap return to a non-pressed position. Before the second magnetic member is in contact with the first magnetic member, the buffer structure interferes with the board to cause deformation of one of the buffer structure and the board for providing a buffer to the second magnetic member.

Description

Button and its keyboard

The present invention relates to a button and a keyboard thereof, and more particularly to a button having a buffer structure formed by extending a magnetic member of a self-supporting device to prevent a magnetic member of the supporting device and a magnetic member on the bottom plate from directly colliding 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.

Generally, the conventional keyboard adopts a pressing design in which the elastic member is disposed between the key cap and the bottom plate, whereby when the key cap is pressed by the user, the elastic member provides elastic restoring force to the key cap to drive the key cap to support the lifting and lowering The mechanism of the device (such as the scissors foot mechanism) is restored to the position before pressing. Since the elastic member is usually made of rubber, the rubber may have a fatigue condition under long-term use, thereby shortening the service life of the button.

At present, a common method for solving the above problem is to adopt a magnetic attraction instead of the elastic member. For example, the two magnetic members can be respectively disposed on the support member of the bottom plate and the lifting support device, thereby When the cap is pressed by an external force to cause the two magnetic members to move away from each other, the key cap can be moved to the pressing position with the lifting support device, and when the external force is released, the magnetic attraction force attracts the two magnetic members to be close to each other, so that the key cap moves with the lifting support device. Back to the unpressed position. However, the above-mentioned magnetic attraction attracting the two magnetic members close to each other tends to cause a direct collision of the two magnetic members when the key cap moves back to the unpressed position, so that not only unnecessary noise interference is generated during the user's operation of the keyboard. It affects the user's feeling of use and operation when pressing the magnetic button, and at the same time, it is easy to cause damage to the button component and shorten the service life of the button.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a key having a cushioning structure formed by extending a magnetic member of a self-supporting device to prevent a magnetic member of the supporting device from colliding with each other directly on a magnetic member of the bottom plate and a keyboard thereof to solve the above problems.

According to an embodiment, the button of the present invention includes a bottom plate structure, a first magnetic member, a keycap, and a support device. The first magnetic member is disposed on the bottom plate structure. The supporting device is disposed between the bottom plate structure and the keycap and includes a first supporting member and a second supporting member, the first supporting member and the second supporting member are opposite to each other and movably coupled to the keycap and The bottom plate structure is configured to move the key cap between the unpressed position and a pressing position, the first support member has a second magnetic member, and the second magnetic member extends toward the second support member. And corresponding to the first magnetic member, a buffer structure is formed on the second magnetic member, and a vertical distance between the bottom plate structure and the buffer structure is smaller than a vertical distance between the second magnetic member and the first magnetic member. When the keycap is not pressed, the magnetic force maintains the keycap in the unpressed position, and the buffer structure remains in contact with the bottom plate structure. When the key cap is pressed by an external force to cause the second magnetic member to move away from the first magnetic member along with the pivoting of the first support member, the key cap is moved to the pressing by the support device from the unpressed position Positioning; when the external force is released, a magnetic force between the second magnetic member and the first magnetic member drives the second magnetic member to be close to the first magnetic member, such that the key cap is accompanied by the supporting device by the pressing The position moves back to the unpressed position. Before the second magnetic member contacts the first magnetic member, the buffer structure interferes with the bottom plate structure to elastically deform one of the buffer structure and the bottom plate structure to provide a buffering force to the second magnetic member.

According to another embodiment, the keyboard of the present invention includes a backplane structure and a plurality of buttons. The plurality of buttons are disposed on the bottom plate structure, and at least one of the plurality of buttons comprises a first magnetic member, a keycap, and a supporting device. The first magnetic member is disposed on the bottom plate structure. The supporting device is disposed between the bottom plate structure and the keycap and includes a first supporting member and a second supporting member, the first supporting member and the second supporting member are opposite to each other and movably coupled to the keycap and The bottom plate structure is configured to move the key cap between the unpressed position and a pressing position, the first support member has a second magnetic member, and the second magnetic member extends toward the second support member. And corresponding to the first magnetic member, a buffer structure is formed on the second magnetic member, and a vertical distance between the bottom plate structure and the buffer structure is smaller than a vertical distance between the second magnetic member and the first magnetic member. When the keycap is not pressed, the magnetic force maintains the keycap in the unpressed position, and the buffer structure abuts the bottom plate structure. When the key cap is pressed by an external force to cause the second magnetic member to move away from the first magnetic member along with the pivoting of the first support member, the key cap is moved to the pressing by the support device from the unpressed position position. When the external force is released, a magnetic force between the second magnetic member and the first magnetic member drives the second magnetic member to be close to the first magnetic member, so that the key cap is moved by the pressing position with the supporting device Go back to the unpressed position. Before the second magnetic member contacts the first magnetic member, the buffer structure interferes with the bottom plate structure to elastically deform one of the buffer structure and the bottom plate structure to provide a buffering force to the second magnetic member.

In summary, the present invention adopts a design in which the vertical distance between the bottom plate structure and the buffer structure directly formed on the magnetic member of the support member is smaller than the vertical distance between the second magnetic member and the first magnetic member to generate a buffer structure in the magnetic The suction force drives the buffering effect of the second magnetic member interfering with the bottom plate structure before contacting the first magnetic member. In this way, the present invention can effectively solve the problem that the magnetic members mentioned in the prior art collide with each other when the key cap moves back to the unpressed position, thereby greatly improving the user's feeling of use when pressing the magnetic button. And the feel of the operation, and extend the life of the magnetic button.

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

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a schematic perspective view of a keyboard 10 according to an embodiment of the present invention. FIG. 2 is an enlarged schematic view of the button 12 of FIG. 1 , wherein the button 12 is displayed for clarity. The internal structure design, the key cap 16 is only shown in dashed lines in FIG. 2 . As shown in FIGS. 1 and 2, the keyboard 10 includes a plurality of buttons 12 and a bottom plate structure 14. It should be noted that the keyboard 10 can be preferably applied to a portable electronic device (such as a notebook computer) generally having an opening and closing mechanism composed of an upper cover and a lower cover, but is not limited thereto.

The magnetic buffering design proposed by the present invention can be applied to at least one of a plurality of buttons 12, the number of which depends on the practical application of the keyboard 10. For the sake of simplicity, the following is for one of the magnetics. The button 12 of the suction buffer design is described. As for the structural design of the button 12 of the same design, it can be deduced. Please refer to FIG. 2, FIG. 3, and FIG. 4, FIG. 3 is a side view of the button 12 of FIG. 2, and FIG. 4 is a side view of the keycap 16 of FIG. 3 pressed to the pressing position, As can be seen from FIGS. 2, 3, and 4, the button 12 is disposed on the floor structure 14 and includes the keycap 16 and the support device 18. The support device 18 is disposed between the bottom plate structure 14 and the keycap 16 and includes a first support member 20 and a second support member 22. The first support member 20 and the second support member 22 are movably coupled to the keycap 16 and the bottom plate. The structure 14 moves the keycap 16 with the support device 18 between the undepressed position and the depressed position.

In addition, in this embodiment, the bottom plate structure 14 may include a circuit board 24 (such as a film, etc.) and a bottom plate 26 disposed between the support device 18 and the bottom plate 26, thereby When the cap 16 is pressed to the depressed position as shown in FIG. 4, the keycap 16 can be moved downward to trigger the circuit board 24 to perform the corresponding input function. The bottom plate 26 has a first magnetic member 28 having a second magnetic member 30 that extends toward the second support member 22 and that corresponds to the first magnetic member 28. One of the first magnetic member 28 and the second magnetic member 30 may be a magnetic member (for example, a magnet), and the other of the first magnetic member 28 and the second magnetic member 30 may be a magnetic member (for example, a magnet) Or a magnetic material (for example, iron or other metal). In this embodiment, the first magnetic member 28 is preferably a magnet, and the second magnetic member 30 is preferably made of iron and has magnetic permeability. In practical applications, the support device 18 can be made entirely of a magnetically permeable material. In addition, in another embodiment, both the first magnetic member 28 and the second magnetic member 30 can be magnets. In a practical application, the bottom plate structure 14 can optionally further include a diaphragm 27 (such as a Mylar film, etc.), and the diaphragm 27 can be attached to the bottom plate 26 to fix the first magnetic member 28 to the bottom plate 26, That is, the first magnetic member 28 can be fixed to the bottom plate 26 via the support and positioning provided by the diaphragm 27 under the bottom plate 26 (but not limited thereto, the first magnetic member 28 can also adopt other fixing methods. Fixed to the bottom plate 26, such as a structural fastening design, etc.).

In more detail, the buffer structure 32 is formed on the second magnetic member 30. In this embodiment, as shown in FIG. 2, the buffer structure 32 may preferably be at least laterally extended from the second magnetic member 30. An elastic cantilever 34 (two shown in FIG. 2, but not limited thereto), the circuit board 24 is formed with an abutting piece portion 25 corresponding to the free end portion P of the elastic cantilever 34, and the free end of the elastic cantilever 34 The portion P is bent downwardly to the abutting piece portion 25 with a bending structure 35, wherein a vertical distance D1 between the bending structure 35 and the abutting piece portion 25 is smaller than between the second magnetic member 30 and the first magnetic member 28. The vertical distance D2 (as shown in FIG. 4), whereby the bending structure 35 can be used before the magnetic attraction between the second magnetic member 30 and the first magnetic member 28 drives the second magnetic member 30 to contact the first magnetic member 28. First, it interferes with the abutting piece portion 25 to provide a cushioning elastic force.

As for the actuation mechanism design of the first support member 20 and the second support member 22, as shown in FIG. 2, the first support member 20 and the second support member 22 may respectively include a first connecting portion 36 and a second portion. a connecting portion 38, wherein the first connecting portion 36 is rotatably coupled to the bottom plate 26, and the second connecting portion 38 is rotatably coupled to the keycap 16, whereby the key cap 16 can be accompanied by the support device 18 in an unpressed position (eg, Figure 3) moves between the pressed position (as shown in Figure 4).

Through the above design, when the keycap 16 is not pressed, the magnetic attraction between the first magnetic member 28 and the second magnetic member 30 maintains the keycap 16 in the undepressed position as shown in FIG. When the key cap 16 is pressed by an external force, and further the force is sufficient to overcome the magnetic attraction force to cause the second magnetic member 30 to be away from the first magnetic member 28, the second magnetic member 30 is pivoted with the first connecting portion 36 as a fulcrum, and the key cap 16 is accompanied. The support device 18 is moved to the pressed position (as shown in Fig. 4) by the unpressed position (as shown in Fig. 3). When the external force is released, the magnetic attraction between the first magnetic member 28 and the second magnetic member 30 attracts the second magnetic member 30 to be close to the first magnetic member 28, and the second magnetic member 30 drives the first support member 20 of the supporting device 18. Pivoting with the first connecting portion 36 as a fulcrum causes the keycap 16 to move back to the unpressed position (as shown in Fig. 3) with the support device 18 from the pressed position (as shown in Fig. 4).

It should be noted that during the process of moving the keycap 16 from the pressing position to the unpressed position, the vertical distance D1 between the bending structure 35 and the abutting piece 25 is smaller than that of the second magnetic member 30 and the first The design of the vertical distance D2 between the magnetic members 28, the bending structure 35 may first interfere with the abutting piece portion 25 before the second magnetic member 30 contacts the first magnetic member 28, that is, with the key When the cap 16 moves upward, the bending structure 35 can first contact the abutting piece 25 of the circuit board 24 (as shown in FIG. 5, which is the bending structure 35 of FIG. 2 moving upward with the key cap 16 And contacting the abutting piece 25 along the section line AA), next, as the key cap 16 continues to move upward, the elastic cantilever 34 and the abutting piece contacting the abutting piece 25 via the bending structure 35 Bending deformation occurs correspondingly between the portions 25 due to structural interference (as to which bending deformation occurs, depending on the structural elasticity of the elastic cantilever 34 and the abutting piece portion 25, for example, if the elastic cantilever 34 is 34 Compared with the abutting piece portion 25, which has better structural elasticity, the elastic suspension The arm 34 is bent and deformed with respect to the abutting piece portion 25, but is not limited thereto until the key cap 16 is released by the external force to return to the unpressed position as shown in Fig. 3. In this way, the buffer structure 32 can pass the bending deformation between the elastic cantilever 34 and the abutting piece portion 25 to provide a buffering elastic force to the second magnetic member 30 to ensure that the second magnetic member 30 does not directly collide with the first magnetic member. 28, after being elastically buffered, the first magnetic member 28 is contacted, whereby the present invention can effectively solve the problem that the magnetic members mentioned in the prior art collide with each other when the keycap moves back to the unpressed position. Thereby, the user's feeling of use and the feeling of operation when pressing the magnetic button are greatly improved, and the life of the magnetic button is prolonged.

It is worth mentioning that the above-mentioned bending structure is an omitting design, thereby simplifying the structural design of the buffer structure. For example, please refer to FIG. 6 , FIG. 7 , and FIG. 8 , and FIG. 6 is based on A partially enlarged schematic view of a keyboard 100 according to another embodiment of the present invention, FIG. 7 is a side view of the button 102 of FIG. 6, and FIG. 8 is a side view of the key cap 16 of FIG. 7 pressed to a pressing position. In order to clearly show the internal structural design of the button 102, the key cap 16 is only schematically shown by a broken line in FIG. 6, and this embodiment has the same number as the components described in the above embodiments, and represents the same structure or function. The related description will not be repeated here. The keyboard 100 includes a plurality of buttons 102 and a floor structure 14. The button 102 is disposed on the bottom plate structure 14 and includes a key cap 16 and a support device 104. The support device 104 is disposed between the bottom plate structure 14 and the keycap 16 and includes a first support member 106 and a second support member 22. The first support member 106 and the second support member 22 are movably coupled to the keycap 16 and the bottom plate. The structure 14 moves the keycap 16 with the support device 106 between the unpressed position as shown in Fig. 7 and the pressed position as shown in Fig. 8.

In more detail, the buffer structure 108 is formed on the second magnetic member 30. In this embodiment, as shown in FIG. 6, the buffer structure 108 may preferably be at least laterally extended from the second magnetic member 30. An elastic cantilever 110 (two shown in FIG. 6, but not limited thereto), wherein a vertical distance D3 between the elastic cantilever 110 and the abutting piece portion 25 is smaller than the second magnetic member 30 and the first magnetic member 28 The vertical distance D2 therebetween, so that the elastic cantilever 110 can contact the abutting piece 25 before the magnetic force between the second magnetic member 30 and the first magnetic member 28 drives the second magnetic member 30 to contact the first magnetic member 28. Interference provides the purpose of buffering the elastic force.

Through the above design, the keycap 16 is passed between the elastic cantilever 110 and the abutting piece portion 25 in the process of moving the support device 18 back to the unpressed position as shown in FIG. 7 by the pressing position as shown in FIG. The vertical distance D3 is smaller than the vertical distance D2 between the second magnetic member 30 and the first magnetic member 28, and the elastic cantilever 110 can interfere with the abutting portion 25 before the second magnetic member 30 contacts the first magnetic member 28. That is, as the key cap 16 moves upward, the elastic cantilever 110 can first contact the abutment piece 25 (as shown in FIG. 9 , which is the elastic cantilever 110 of FIG. 6 along with the key cap 16 Moving upward to contact the cross-sectional line BB of the abutting piece portion 25), next, as the keycap 16 continues to move upward, the elastic cantilever 110 and the abutting piece portion 25 are structurally interfered. Correspondingly, a bending deformation is generated (which causes a bending deformation end depending on the structural elasticity of the elastic cantilever 110 and the abutting piece portion 25, for example, if the abutting piece portion 25 has better structural elasticity than the elastic cantilever 110, Then, the abutting piece portion 25 is bent and deformed, but is not limited thereto. , The keycap 16 is released by an external force does not respond until the pressing position as shown in FIG. 7 until the first. In this way, the buffer structure 108 can pass through the bending deformation between the elastic cantilever 110 and the abutting piece portion 25 to provide a buffering elastic force to the second magnetic member 30 to ensure that the second magnetic member 30 does not directly collide with the first magnetic member. 28, after being elastically buffered, the first magnetic member 28 is contacted, whereby the present invention can effectively solve the problem that the magnetic members mentioned in the prior art collide with each other when the keycap moves back to the unpressed position. Thereby, the user's feeling of use and the feeling of operation when pressing the magnetic button are greatly improved, and the life of the magnetic button is prolonged.

In addition, the above-mentioned bottom plate component for interfering with the buffer structure on the magnetic member of the supporting device is not limited to the above embodiment, and other bottom plate structural members may be used to achieve the same effect, such as a bottom plate or a diaphragm, in other words, as long as The vertical distance between the buffer structure on the second magnetic member of the supporting device and the bottom plate structure is smaller than the vertical distance between the second magnetic member and the first magnetic member, so that the buffer structure drives the second magnetic member to contact the first magnetic contact force. The design of the magnetic component to interfere with the structure of the bottom plate before, all of which belong to the protection scope of the present invention. For example, in another embodiment, the present invention may adopt a design in which the vertical distance between the buffer structure and the bottom plate is smaller than the vertical distance between the second magnetic member and the first magnetic member to generate a buffer structure in contact with the second magnetic member. Interacting with the bottom plate before the first magnetic member and bending the buffer structure (or the bottom plate) to provide buffering force to the buffering effect of the second magnetic member; or, in another embodiment, the present invention may adopt a buffer structure and setting The vertical distance between the diaphragms under the bottom plate is smaller than the vertical distance between the second magnetic member and the first magnetic member to generate a buffer structure through the perforations of the bottom plate before the second magnetic member contacts the first magnetic member Interference with the diaphragm and bending deformation of the cushioning structure (or diaphragm) to provide cushioning power to the cushioning effect of the second magnetic member. Compared with the prior art, the present invention adopts a design in which the vertical distance between the buffer structure directly formed on the magnetic member of the supporting device and the bottom plate structure is smaller than the vertical distance between the second magnetic member and the first magnetic member to generate a buffer structure. The magnetic attraction drives the buffering effect of the second magnetic member in contact with the bottom plate structure before contacting the first magnetic member. In this way, the present invention can effectively solve the problem that the magnetic members mentioned in the prior art collide with each other when the key cap moves back to the unpressed position, thereby greatly improving the user's feeling of use when pressing the magnetic button. And the feel of the operation, and extend the life of the magnetic button. 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, 100‧‧‧ keyboard
12, 102‧‧‧ button
14‧‧‧floor structure
16‧‧‧Key Cap
18, 104‧‧‧ support device
20, 106‧‧‧ first support
22‧‧‧second support
24‧‧‧ boards
25‧‧‧Contacts
26‧‧‧floor
27‧‧‧ diaphragm
28‧‧‧First magnetic parts
30‧‧‧Second magnetic parts
32, 108‧‧‧ buffer structure
34,110‧‧‧Flexible cantilever
35‧‧‧Bending structure
36‧‧‧First connection
38‧‧‧Second connection
P‧‧‧Free end
D1, D2, D3‧‧‧ vertical distance

1 is a perspective view of a keyboard according to an embodiment of the present invention. Fig. 2 is an enlarged schematic view of the button of Fig. 1. Figure 3 is a side view of the button of Figure 2. Fig. 4 is a side view of the key cap of Fig. 3 when it is pressed to the pressing position. Fig. 5 is a schematic cross-sectional view of the bending structure of Fig. 2 contacting the abutting piece along the section line A-A as the key cap moves upward. Figure 6 is a partially enlarged schematic view of a keyboard according to another embodiment of the present invention. Figure 7 is a side view of the button of Figure 6. Fig. 8 is a side view of the key cap of Fig. 7 when it is pressed to the pressing position. Fig. 9 is a schematic cross-sectional view of the elastic cantilever of Fig. 6 contacting the abutting piece along the section line B-B as the key cap moves upward.

10‧‧‧ keyboard

12‧‧‧ button

14‧‧‧floor structure

16‧‧‧Key Cap

18‧‧‧Support device

20‧‧‧First support

22‧‧‧second support

24‧‧‧ boards

25‧‧‧Contacts

26‧‧‧floor

27‧‧‧ diaphragm

28‧‧‧First magnetic parts

30‧‧‧Second magnetic parts

34‧‧‧Flexible cantilever

35‧‧‧Bending structure

36‧‧‧First connection

38‧‧‧Second connection

D1, D2‧‧‧ vertical distance

Claims (10)

A button comprising: a bottom plate structure; a first magnetic member disposed on the bottom plate structure; a key cap; and a supporting device disposed between the bottom plate structure and the key cap and including a first a support member and a second support member, the first support member and the second support member are opposite to each other and movably coupled to the key cap and the bottom plate structure such that the key cap is accompanied by the support device in an unpressed position and a Moving between the pressing positions, the first supporting member has a second magnetic member, the second magnetic member is formed to extend toward the second supporting member and corresponds to the first magnetic member, and a buffer structure is formed on the second magnetic member a vertical distance between the bottom plate structure and the buffer structure is less than a vertical distance between the second magnetic member and the first magnetic member; wherein the magnetic force maintains the key cap when the key cap is not pressed In the unpressed position, the buffer structure is in abutment with the bottom plate structure; when the key cap is pressed by an external force to cause the second magnetic member to move away from the first magnetic member as the first support member pivots , The keycap is moved to the pressing position by the supporting device; when the external force is released, a magnetic force between the second magnetic member and the first magnetic member drives the second magnetic member and the first The magnetic member is in proximity such that the keycap moves from the pressed position back to the undepressed position with the support member, wherein the cushioning structure interferes with the bottom plate structure to cause the second magnetic member to contact the first magnetic member One of the cushioning structure and the bottom plate structure is elastically deformed to provide a cushioning force to the second magnetic member. The button of claim 1, wherein the buffer structure is at least one elastic cantilever formed laterally from the second magnetic member, the bottom plate structure comprising a bottom plate and a circuit board, the circuit board being disposed on the supporting device And abutting a piece between the bottom plate and the free end of the at least one elastic cantilever, the vertical end of the at least one elastic cantilever and the abutting piece of the circuit board The distance is less than the vertical distance between the second magnetic member and the first magnetic member such that the free end of the at least one elastic cantilever is before the second magnetic member contacts the first magnetic member, and the circuit board The abutting piece interferes to bend the at least one elastic cantilever and one of the abutting piece to provide the buffering force to the second magnetic piece. The button of claim 2, wherein the free end portion is bent downwardly toward the abutting piece portion to have a bending structure, and the vertical distance between the bending structure and the abutting piece portion is smaller than the second magnetic piece The vertical distance from the first magnetic member is such that the bending structure interferes with the abutting piece before the second magnetic member contacts the first magnetic member to cause the at least one elastic cantilever and the abutment One of the tab portions is bent to provide the buffering force to the second magnetic member. The button of claim 1, wherein the bottom plate structure comprises a bottom plate and a diaphragm, the bottom plate is formed with a through hole at a position corresponding to the buffer structure, and the diaphragm is attached to the bottom plate to the first magnetic member. Fixed on the bottom plate, the vertical distance between the buffer structure and the diaphragm is smaller than the vertical distance between the second magnetic member and the first magnetic member, so that the buffer structure contacts the second magnetic member Prior to the first magnetic member, the diaphragm is interfered with the diaphragm to cause the cushioning structure and one of the diaphragm to elastically deform to provide the cushioning force to the second magnetic member. The button of claim 1, wherein the bottom plate structure comprises a bottom plate, the vertical distance between the buffer structure and the bottom plate is smaller than the vertical distance between the second magnetic member and the first magnetic member, so that the buffer The structure interferes with the bottom plate before the second magnetic member contacts the first magnetic member to elastically deform one of the buffer structure and the bottom plate to provide the buffering elastic force to the second magnetic member. A keyboard comprising: a bottom plate structure; and a plurality of buttons disposed on the bottom plate structure, at least one of the plurality of buttons comprising: a first magnetic member disposed on the bottom plate structure; a support device disposed between the bottom plate structure and the keycap and including a first support member and a second support member, the first support member and the second support member are opposite to each other and movably connected The key cap and the bottom plate structure are configured to move the key cap between the unpressed position and a pressing position, the first support member having a second magnetic member facing the first Two support members are formed to extend and correspond to the first magnetic member, and a buffer structure is formed on the second magnetic member, and a vertical distance between the bottom plate structure and the buffer structure is smaller than between the second magnetic member and the first magnetic member a vertical distance; wherein, when the keycap is not pressed, the magnetic force maintains the keycap in the unpressed position, the buffer structure abuts the bottom plate structure; when the keycap is subjected to an external force When the pressure causes the second magnetic member to move away from the first magnetic member as the first support member pivots, the key cap is moved to the pressing position by the support device from the unpressed position; when the external force is released a magnetic force between the second magnetic member and the first magnetic member drives the second magnetic member to be adjacent to the first magnetic member such that the key cap moves from the pressing position back to the unpressed position with the supporting device The buffer structure interferes with the bottom plate structure to cause the buffer structure and one of the bottom plate structures to elastically deform to provide a buffering force to the second magnetic body before the second magnetic member contacts the first magnetic member. Pieces. The keyboard of claim 6, wherein the buffer structure is at least one elastic cantilever extending laterally from the second magnetic member, the bottom plate structure comprising a bottom plate and a circuit board, the circuit board being disposed on the supporting device And abutting a piece between the bottom plate and the free end of the at least one elastic cantilever, the vertical end of the at least one elastic cantilever and the abutting piece of the circuit board The distance is less than the vertical distance between the second magnetic member and the first magnetic member such that the free end of the at least one elastic cantilever is before the second magnetic member contacts the first magnetic member, and the circuit board The abutting piece interferes to bend the at least one elastic cantilever and one of the abutting piece to provide the buffering force to the second magnetic piece. The keyboard of claim 7, wherein the free end portion is bent downwardly toward the abutting piece portion to have a bending structure, and the vertical distance between the bending structure and the abutting piece portion is smaller than the second magnetic piece. The vertical distance from the first magnetic member is such that the bending structure interferes with the abutting piece before the second magnetic member contacts the first magnetic member to cause the at least one elastic cantilever and the abutment One of the tab portions is bent to provide the buffering force to the second magnetic member. The keyboard of claim 6, wherein the bottom plate structure comprises a bottom plate and a diaphragm, the bottom plate is formed with a through hole corresponding to the buffer structure, and the diaphragm is attached to the bottom plate to the first magnetic member. Fixed on the bottom plate, the vertical distance between the buffer structure and the diaphragm is smaller than the vertical distance between the second magnetic member and the first magnetic member, so that the buffer structure contacts the second magnetic member Prior to the first magnetic member, the diaphragm is interfered with the diaphragm to cause the cushioning structure and one of the diaphragm to elastically deform to provide the cushioning force to the second magnetic member. The keyboard of claim 6, wherein the bottom plate structure comprises a bottom plate, and the vertical distance between the buffer structure and the bottom plate is smaller than the vertical distance between the second magnetic member and the first magnetic member to enable the buffer The structure interferes with the bottom plate before the second magnetic member contacts the first magnetic member to elastically deform one of the buffer structure and the bottom plate to provide the buffering elastic force to the second magnetic member.