TWI555050B - 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 with a buffer cantilever extending from a support member of a self-supporting device to prevent the two magnetic regions 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.

Accordingly, it is an object of the present invention to provide a button having a buffer cantilever extending from a support member of a self-supporting device to prevent direct collision of two magnetic regions with each other and a keyboard thereof to solve the above problems.

According to an embodiment, the button of the present invention includes a floor structure, a keycap, and a support device. The backplane structure has at least one first magnetic zone. 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 being pivotally coupled to the keycap and the a bottom plate structure for moving the keycap between the unpressed position and a pressing position, the first support member having a second magnetic region, the second magnetic region corresponding to the first magnetic region, at least one The buffer cantilever extends from the second support member to the first support member to support the second magnetic region and has a touch end point, and a vertical distance between the touch end point and the bottom plate structure is smaller than the The second magnetic region is perpendicular to one of the first magnetic regions such that a magnetic attraction between the second magnetic region and the first magnetic region drives the second magnetic region to contact the first magnetic region Before the magnetic region, the bottom plate structure interferes with and deforms the buffer cantilever to provide a buffering force to the second magnetic region. The magnetic force maintains the keycap in the unpressed position when the keycap is not pressed; when the keycap is pressed by an external force, the second magnetic zone is pivoted with the first support When the first magnetic region is away, the key cap is moved to the pressing position by the supporting device; when the external force is released, the magnetic attraction attracts the second magnetic region to be close to the first magnetic region, so that the The keycap is moved back to the undepressed position by the support device.

According to another embodiment, the keyboard of the present invention includes a backplane structure and a plurality of buttons. The backplane structure has at least one first magnetic zone. The plurality of buttons are disposed on the bottom plate structure, and at least one of the plurality of buttons includes a keycap and a supporting device. 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 being pivotally coupled to the keycap and the a bottom plate structure for moving the keycap between the unpressed position and a pressing position, the first support member having a second magnetic region, the second magnetic region corresponding to the first magnetic region, at least one The buffer cantilever extends from the second support member to the first support member to support the second magnetic region and has a touch end point, and a vertical distance between the touch end point and the bottom plate structure is smaller than the The second magnetic region is perpendicular to one of the first magnetic regions such that a magnetic attraction between the second magnetic region and the first magnetic region drives the second magnetic region to contact the first magnetic region Before the magnetic region, the bottom plate structure interferes with and deforms the buffer cantilever to provide a buffering force to the second magnetic region. The magnetic force maintains the keycap in the unpressed position when the keycap is not pressed; when the keycap is pressed by an external force, the second magnetic zone is pivoted with the first support When the first magnetic region is away, the key cap is moved to the pressing position by the supporting device; when the external force is released, the magnetic attraction attracts the second magnetic region to be close to the first magnetic region, so that the The keycap is moved back to the undepressed position by the support device.

In summary, the present invention adopts a design in which a buffer cantilever extends from the support member and the vertical distance between the touch end of the buffer cantilever and the bottom plate structure is smaller than the vertical distance between the second magnetic region and the first magnetic interval to generate a touch. The end point is a buffering effect of the magnetic attraction driving the second magnetic region to interfere with the bottom plate structure before contacting the first magnetic region. 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 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 , as shown in FIG. 1 and 2, the keyboard 10 includes a plurality of buttons 12 and a floor 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 key magnetic design of the present invention can be applied to at least one of a plurality of keys 12, the number of which is dependent 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 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, FIG. 4, and FIG. 5, FIG. 3 is a cross-sectional view of the button 12 of FIG. 2 along the section line XX, and FIG. 4 is a key view of the button 12 of FIG. FIG. 5 is a schematic cross-sectional view showing the key cap 16 of FIG. 3 pressed to a pressing position. As can be seen from FIG. 2, FIG. 3, FIG. 4, and FIG. 5, the button 12 is disposed on The bottom plate structure 14 includes a keycap 16 and a 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 being pivotally coupled to the keycap 16 and The bottom plate structure 14 moves the keycap 16 with the support device 18 between the undepressed position and the depressed position.

In more detail, in this embodiment, the bottom plate structure 14 may include a bottom plate 24 and a diaphragm 26 (such as a Mylar diaphragm, etc.), and the bottom plate 24 has at least one first magnetic region 28 (shown in FIG. 3, But not limited to this, and the first support member 20 has a second magnetic region 30, and the second magnetic region 30 corresponds to the first magnetic region 28. One of the first magnetic region 28 and the second magnetic region 30 may be a magnetic member (eg, a magnet), and the other of the first magnetic region 28 and the second magnetic region 30 may be a magnetic member (eg, a magnet) Or a magnetic material (for example, iron or other metal). In this embodiment, the first magnetic region 28 is preferably a magnet, and the second magnetic region 30 is preferably composed 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 region 28 and the second magnetic region 30 can be magnets.

In addition, in this embodiment, as shown in FIG. 3 and FIG. 5, at least one buffering cantilever 32 (one shown in FIGS. 3 and 5, but not limited thereto) is moved from the second support member 22 to The first support member 20 is formed to extend under the second magnetic region 30 and has a touch end point 34. The bottom plate 24 is formed with a through hole 25 at a position corresponding to the touch end point 34, and the diaphragm 26 can be attached to the bottom plate. 24 to fix the first magnetic region 28 to the bottom plate 24, that is, the first magnetic region 28 can be fixed to the bottom plate 24 via the support of the diaphragm 26 attached to the bottom plate 24 (but not The first magnetic region 28 can also be fixed to the bottom plate 24 by other fixing means, such as a structural fastening design, etc., wherein the vertical distance D ₁ between the touch end point 34 and the diaphragm 26 is smaller than the second. The vertical distance D ₂ between the magnetic region 30 and the first magnetic region 28, so as to reach the touch end point 34, the magnetic attraction between the second magnetic region 30 and the first magnetic region 28 drives the second magnetic region 30 to contact A magnetic zone 28 previously interferes with the diaphragm 26 to provide a cushioning force.

As for the mechanism design of the first support member 20 and the second support member 22, as shown in FIG. 4, the first support member 20 and the second support member 22 respectively include a first connecting portion 36 and a second connecting portion 38. The first connecting portion 36 is rotatably connected to the bottom plate 24, 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 (as shown in FIG. 3). Moved between the display and the pressed position (as shown in Figure 5). In addition, the keyboard 10 may further include a circuit board 40 which may be disposed on the bottom plate 24 as a thin film circuit board, whereby when the key cap 16 is pressed to the pressing position as shown in FIG. The keycap 16 can be moved downward to trigger the circuit board 40 to perform a corresponding input function.

Through the above design, when the keycap 16 is not pressed, the magnetic attraction between the first magnetic region 28 and the second magnetic region 30 maintains the keycap 16 in the undepressed position as shown in FIG. When the keycap 16 is pressed by an external force and the force is sufficient to overcome the magnetic attraction to cause the second magnetic region 30 to be away from the first magnetic region 28, the second magnetic region 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. 5) by the unpressed position (as shown in Fig. 3). When the external force is released, the magnetic attraction attracts the second magnetic zone 30 to be close to the first magnetic zone 28, and the second magnetic zone 30 drives the first support 20 of the support device 18 to pivot, so that the keycap 16 is accompanied by the support device 18 from the pressed position. (As shown in Figure 5) Move back to the unpressed position (as shown in Figure 3). It should be noted that the vertical distance D ₁ between the touch end point 34 and the diaphragm 26 is smaller than the second magnetic area 30 and the first time when the key cap 16 is moved back to the unpressed position by the supporting device 18 from the pressing position. The design of the vertical distance D ₂ between the magnetic regions 28, the touch end point 34 may pass through the perforations 25 to interfere with the diaphragm 26 before the second magnetic region 30 contacts the first magnetic region 28, that is, with When the keycap 16 is moved downward, the touch end point 34 can first contact the diaphragm 26 (as shown in FIG. 6, which is the touch end point 34 of the buffer cantilever 32 of FIG. 5 along with the key cap 16 Next, as the keycap 16 continues to move downward, the buffer cantilever 32 contacting the diaphragm 26 is subjected to bending deformation until the key cap 16 is pressed. Press until the pressed position as shown in Fig. 3. In this way, the buffering cantilever 32 which is supported by the second magnetic region 30 can provide the buffering elastic force generated by the self-pressure bending deformation to the second magnetic region 30, so as to ensure that the second magnetic region 28 does not directly collide. A magnetic region 30 is buffered to contact the first magnetic region 30, 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. The problem is that 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 should be noted that the above-mentioned bottom plate component for abutting the touch end of the buffer cantilever to bend the buffer cantilever is not limited to the above embodiment, and other bottom structural members can also be used to achieve the same effect, such as The bottom plate or the circuit board, in other words, the vertical distance between the touch end point of the buffer cantilever using the support member and the bottom plate structure is smaller than the vertical distance between the second magnetic area and the first magnetic interval so that the touch end is driven by the magnetic force The design that the second magnetic region interferes with the structure of the bottom plate before contacting the first magnetic region belongs to the protection scope of the present invention. For example, in another embodiment, the present invention can adopt a design in which the vertical distance between the touch end of the buffer cantilever and the bottom plate is smaller than the vertical distance between the second magnetic region and the first magnetic interval to generate a touch end point. Providing a cushioning effect of buffering the elastic force to the second magnetic region before the second magnetic region contacts the first magnetic region and deforming the buffer cantilever; or, in another embodiment, the present invention can employ a buffer cantilever The vertical distance between the touch end point and the circuit board is smaller than the vertical distance between the second magnetic area and the first magnetic interval to generate a touch end point to interfere with the circuit board before the second magnetic area contacts the first magnetic area And the buffer cantilever is bent and deformed to provide buffering power to the buffering effect of the second magnetic region. In addition, as can be seen from FIG. 3, the design of the buffer cantilever 32 can also be applied to the first support member 20 to further enhance the cushioning effect of the support device 18.

Compared with the prior art, the present invention adopts a design in which a buffer cantilever extends from the support member and the vertical distance between the touch end of the buffer cantilever and the bottom plate structure is smaller than the vertical distance between the second magnetic region and the first magnetic interval to generate a touch. The end effect is a buffering effect of the magnetic attraction driving the second magnetic region to interfere with the structure of the bottom plate before contacting the first magnetic region. 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‧‧‧ keyboard

12‧‧‧ button

14‧‧‧floor structure

16‧‧‧Key Cap

18‧‧‧Support device

20‧‧‧First support

22‧‧‧second support

24‧‧‧floor

25‧‧‧Perforation

26‧‧‧ diaphragm

28‧‧‧First magnetic zone

30‧‧‧Second magnetic zone

32‧‧‧buffer cantilever

34‧‧‧Touch endpoint

36‧‧‧First connection

38‧‧‧Second connection

40‧‧‧ boards

D ₁ , D ₂ ‧‧‧ 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 schematic cross-sectional view of the button of Figure 2 taken along section line X-X. Fig. 4 is an enlarged schematic view showing the key of the second figure after the key cap is omitted. Fig. 5 is a schematic cross-sectional view showing the key cap of Fig. 3 pressed to the pressing position. Fig. 6 is a schematic cross-sectional view showing the contact end of the buffer cantilever of Fig. 5 contacting the diaphragm as the key cap moves downward.

12‧‧‧ button

14‧‧‧floor structure

16‧‧‧Key Cap

18‧‧‧Support device

20‧‧‧First support

22‧‧‧second support

24‧‧‧floor

25‧‧‧Perforation

26‧‧‧ diaphragm

28‧‧‧First magnetic zone

30‧‧‧Second magnetic zone

32‧‧‧buffer cantilever

34‧‧‧Touch endpoint

38‧‧‧Second connection

40‧‧‧ boards

Claims (10)

A button comprising: a bottom plate structure having at least one first magnetic region; a key cap; and a supporting device disposed between the bottom plate structure and the key cap and including a first support member and a first a second support member, the first support member and the second support member are pivotally coupled to the keycap and the bottom plate structure to move the key cap between the unpressed position and a pressed position with the support device, The first support member has a second magnetic region, and the second magnetic region corresponds to the first magnetic region, and at least one buffer cantilever extends from the second support member to the first support member to support the second magnetic portion. Under the region and having a touch end point, when the key cap is pressed by an external force, a vertical distance between the touch end point and the bottom plate structure is smaller than a vertical distance between the second magnetic area and one of the first magnetic intervals So that the touch end interferes with the bottom plate structure and causes the buffer before the magnetic contact between the second magnetic region and the first magnetic region drives the second magnetic region to contact the first magnetic region. Cantilever bending deformation provides one Resilience to the second magnetic region; wherein, when the keycap is not pressed, the magnetic force maintains the keycap in the unpressed position; when the keycap is pressed by the external force, the second magnetic region is caused When the first support member is pivoted away from the first magnetic region, the key cap is moved from the unpressed position to the pressed position; and when the external force is released, the magnetic attraction attracts the second magnetic force The region is adjacent to the first magnetic region such that the keycap moves from the pressed position back to the undepressed position with the support device. The button of claim 1, wherein the bottom plate structure comprises a bottom plate and a diaphragm, wherein the bottom plate is formed with a through hole at a position corresponding to the end point, and the film is attached to the bottom plate to be the first The magnetic region is fixed on the bottom plate, and the vertical distance between the touch end point and the diaphragm is less than The vertical distance between the second magnetic region and the first magnetic interval such that the touch end interferes with the diaphragm through the through hole before the second magnetic region contacts the first magnetic region and causes the The buffer cantilever is bent to provide the buffering force to the second magnetic zone. The button of claim 1, wherein the bottom plate structure comprises a bottom plate, the vertical distance between the touch end point and the bottom plate is smaller than the vertical distance between the second magnetic area and the first magnetic interval, so that the vertical distance is The touch end surface interferes with the bottom plate and bends the buffer cantilever to provide the buffering elastic force to the second magnetic region before the second magnetic region contacts the first magnetic region. The button of claim 1, wherein the bottom plate structure comprises a bottom plate and a circuit board, the circuit board is disposed between the supporting device and the bottom plate, and the vertical distance between the touch end point and the circuit board is less than The vertical distance between the second magnetic region and the first magnetic interval such that the touch end interferes with the circuit board and bends the buffer cantilever before the second magnetic region contacts the first magnetic region The buffering force is provided to the second magnetic zone. The button of claim 1, wherein one of the first magnetic region and the second magnetic region is a magnetic member, and the other of the first magnetic region and the second magnetic region is magnetic Piece or a magnetic material. A keyboard comprising: a bottom plate structure having at least one first magnetic region; and a plurality of buttons disposed on the bottom plate structure, at least one of the plurality of buttons comprising: a keycap; and a support a 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 pivotally coupled to the keycap and the bottom plate structure such that the key cap is associated with the support device in an unpressed position and a pressed position Moving between the first support member and the second magnetic region, the second magnetic region corresponding to the first magnetic region, at least one buffering cantilever extending from the second support member to the first support member to support the a second magnetic region has a touch end point, and when the key cap is pressed by an external force, a vertical distance between the touch end point and the bottom plate structure is smaller than the second magnetic area and the first magnetic interval a vertical distance such that the touch end interferes with the bottom plate structure before a magnetic attraction between the second magnetic region and the first magnetic region drives the second magnetic region to contact the first magnetic region Flexing the buffer cantilever to provide a cushioning force to the second magnetic zone; wherein, when the keycap is not pressed, the magnetic force maintains the keycap in the unpressed position; when the keycap is subjected to the external force Pressing causes the second magnetic zone to follow When a support member pivots away from the first magnetic region, the key cap is moved to the pressing position by the supporting device from the unpressed position; when the external force is released, the magnetic attraction attracts the second magnetic region The first magnetic zone is adjacent such that the keycap moves from the pressed position back to the undepressed position with the support device. 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 at a position corresponding to the end point, and the film is attached to the bottom plate to be the first The magnetic region is fixed on the bottom plate, and the vertical distance between the touch end point and the diaphragm is smaller than the vertical distance between the second magnetic region and the first magnetic interval, so that the touch end point is at the second Before the magnetic region contacts the first magnetic region, the perforation interferes with the diaphragm and deforms the buffer cantilever to provide the buffering force to the second magnetic region. The keyboard of claim 6, wherein the bottom plate structure comprises a bottom plate, the touch end point and The vertical distance between the bottom plates is smaller than the vertical distance between the second magnetic region and the first magnetic interval, such that the touch end interferes with the bottom plate before the second magnetic region contacts the first magnetic region And the buffer cantilever is bent and deformed to provide the buffering elastic force to the second magnetic region. The keyboard of claim 6, wherein the bottom plate structure comprises a bottom plate and a circuit board, the circuit board is disposed between the supporting device and the bottom plate, and the vertical distance between the touch end point and the circuit board is less than The vertical distance between the second magnetic region and the first magnetic interval such that the touch end interferes with the circuit board and bends the buffer cantilever before the second magnetic region contacts the first magnetic region The buffering force is provided to the second magnetic zone. The keyboard of claim 6, wherein one of the first magnetic region and the second magnetic region is a magnetic member, and the other of the first magnetic region and the second magnetic region is magnetic Piece or a magnetic material.