TWI680384B - keyboard - Google Patents

Abstract

The invention relates to a keyboard, which includes keys, a switch circuit board and a bottom plate, and the keys include a key cap and a connecting element. The keycap includes a first restricted hook and a second restricted hook. The connecting element is located below the keycap and is fixed in the first restricted hook and the second restricted hook. The hook length of the second restricted hook is shorter than that of the open hook, so the amount of assembly interference between the connecting element and the second restricted hook can be reduced to reduce the difficulty of assembling the keycap and the connecting element.

Description

keyboard

The present invention relates to an input device, and more particularly to a keyboard having a plurality of keys.

Common computer peripheral input devices include a mouse, a keyboard, and a trackball. The keyboard can directly type text and symbols into the computer, so it is highly valued by users and input device manufacturers. The subject matter of this case is the keyboard.

Please refer to FIG. 1, which is a schematic diagram of the appearance and structure of a conventional keyboard. The conventional keyboard 1 has a plurality of keys 10, 10 'on its surface. The keys 10 are classified as keys of a general size, and the keys 10' are classified as keys of a longer size (also known as multiple keys). Among them, the length of the button 10 is slightly larger than its width, and the length L1 of the button 10 'is much larger than its width W1. These keys 10 and 10 'are used by a user to press a finger to generate a corresponding signal to the computer, so that the computer performs the function of the pressed keys. Generally speaking, the keys 10 and 10' can be used to input symbols such as English letters , Digital or perform various functions (such as F1 ~ F12, Delete), etc. Among them, the conventional keyboard 1 is a notebook computer Use the keyboard.

Next, the internal structure of the conventional keyboard is explained. Please refer to FIGS. 1 to 4 at the same time. FIG. 2 is an exploded schematic diagram of a conventional keyboard, FIG. 3 is a schematic diagram of a keycap of a conventional keyboard, and FIG. 4 is a schematic diagram of a partial structure of a conventional keyboard. The conventional keyboard 1 includes a plurality of keys 10, 10 ', a bottom plate 11 and a membrane switch circuit 12, and the membrane switch circuit 12 has a plurality of key switches (not shown) corresponding to the plurality of keys 10, 10'. Here, a key 10 'having a relatively large length and width is taken as an example, and the key 10' is, for example, an Alt key. The key 10 ′ includes a key cap 101, a scissors-type connecting element 102, an elastic rubber body 103, and a balance rod 104. The scissors-type connecting element 102 is connected to the key cap 101 and the bottom plate 11, and includes a first frame 1021 and a second frame 1022. The second frame 1022 is pivotally connected to the first frame 1021 so that the first frame 1021 and the second frame 1022 can rotate relative to each other. In addition, an elastic rubber body 103 is provided between the keycap 101 and the membrane switch circuit 12, and a balance lever 104 is connected to the keycap 101 and the bottom plate 11, respectively. The balance lever 104 includes a link portion 1041 and a hook portion 1042.

The membrane switch circuit 12 is disposed on the bottom plate 11, and the bottom plate 11 includes a plurality of first bottom plate hooks 111, a plurality of second bottom plate hooks 112, and a connection bracket 113. The function of the first base plate hook 111 is to connect with the fourth connection portion 1022B of the second frame 1022, and the function of the second base plate hook 112 is to connect to the second connection portion (not shown in the figure) of the first frame 1021. . The connecting frame 113 has a sliding hole 1131 through which the hook portion 1042 of the balance bar 104 can pass through to fix the balance bar 104 on the bottom plate 11. The width of the sliding hole 1131 is larger than the diameter of the hook portion 1042. On the other hand, the keycap 101 includes a plurality of first restrictive hooks 1011, a plurality of open-type hooks 1012, and a plurality of second restrictive hooks 1013. The plurality of first restrictive hooks 1011 are disposed on the inner surface of the keycap 101. It can be connected to the first connecting portion 1021A of the first frame 1021. The limiting hook 1011 has an opening 1011A, and the shape of the opening 1011A is circular.

A plurality of open-type hooks 1012 are disposed on the inner surface of the keycap 101. It is connected to the third connection portion 1022A of the second frame 1022. The plurality of second limiting hooks 1013 are located adjacent to the plurality of first limiting hooks 1011 and can be connected to the link portion 1041 of the balance bar 104. With the above structure, the scissors-type connecting element 102 and the balance rod 104 are movably fixed between the keycap 101 and the bottom plate 11, so that the keycap 101 is movably fixed on the bottom plate 11.

It should be noted that since the length L1 of the keycap 101 of the key 10 'is longer than the length of the key 10, the user's keycap 101 is prone to shake during the process of pressing the key 10', which affects the operation of the key 10 ' The smoothness even affects the user's touch feeling. Therefore, the button 10 'is provided with a balance lever 104, which can increase the left-right movement of the button and alleviate the shaking that occurs when the button cap 101 moves, so that the smoothness of its operation can be improved.

Please refer to FIG. 4 and FIG. 5 at the same time. FIG. 5 is a schematic diagram of a partial structure of a conventional keyboard that is pressed. When the user presses the keycap 101 of the key 10 ', the keycap 101 moves downward relative to the bottom plate 11, so that the first frame 1021 and the second frame 1022 of the scissors-type connection element 102 are changed from the open state to the superimposed state. , And the balance rod 104 swings relative to the bottom plate 11. The first connecting portion 1021A rotates in the opening 1011A of the first limiting hook 1011, and the second connecting portion rotates and slides in the second bottom plate hook 112; the third connecting portion 1022A is in the open hook 1012. It rotates and slides inside, and the fourth connecting portion 1022B rotates on the first bottom plate hook 111, as shown in FIG. 5. On the other hand, the hook portion 1042 rotates and slides in the slide hole 1131, so that the link portion 1041 rotates in the second restricting hook 1013.

At the same time, the keycap 101 moving downward pushes against the elastic rubber body 103, which deforms the elastic rubber body 103 and triggers the membrane switch circuit 12, which generates a key signal corresponding to the keycap 101. When the user no longer presses the button 10 ′, the keycap 101 moves upward relative to the bottom plate 11 in response to the elastic force generated by the elastic rubber body 103 from the deformed state. At this time, the first frame 1021 and the second frame 1022 will change from superimposed to open And the keycap 101 returns to its position before being pressed.

However, the conventional keyboard 1 has the following problems: In order to slide the third connection portion 1022A of the second frame 1022 relative to the keycap 101, the open-type hook 1012 of the keycap 101 adopts an open structure. However, during the sliding process of the third connecting portion 1022A, the third connecting portion 1022A is easily released from the open structure. Therefore, the length of the hook of the open hook 1012 must be increased to prevent the second frame 1022 from being easily removed from the open structure. However, the design of increasing the length of the hook increases the amount of interference between the connection portion and the open hook, instead it increases the difficulty of assembling between the scissors-type connecting element 102 and the keycap 101.

Therefore, there is a need for a keyboard that is easy to assemble and that facilitates easy disconnection of the scissor-type connection element.

The object of the present invention is to provide a keyboard which is easy to assemble and can improve the easy disconnection of the scissors-type connection element.

In a preferred embodiment, the present invention provides a keyboard including a key and a bottom plate. The key includes a key cap and a connecting element. The key cap is exposed outside the keyboard. The key cap includes a first restricted hook and a second restricted hook. The first restricted hook is disposed at An inner surface of the keycap is located on a first side of the keycap; wherein the first restricting hook has a first opening. The second restrictive hook is disposed on the inner surface of the keycap and is located on a second side of the keycap; wherein the second restrictive hook has a second opening. The connecting element is respectively connected to the first limiting hook and the second limiting hook. The connecting element includes a first frame and a second frame. The first frame is connected to the first limiting hook, and a first connecting portion of one of the first frames extends into the first opening. The second The frame is respectively connected to the first frame and the second limiting hook, and a third connecting portion of one of the second frames extends into the second opening. The bottom plate is disposed below the keycap and connected to the connecting element to carry the key; wherein the width of the first opening is similar to the diameter of the first connecting portion, and the width of the second opening is greater than The diameter of the third connecting portion.

In a preferred embodiment, when the keycap is pressed, the second frame is pushed against and rotates relative to the first frame, and the first connection portion rotates within the first opening, and the The third connecting portion rotates and slides in the second opening, so that the keycap is pushed against the elastic element.

In a preferred embodiment, the shape of the second opening is elongated, and the shape of the first opening is circular.

In a preferred embodiment, the keycap further includes a third opening, which is located on the first side of the keycap and close to a brim portion of the keycap; and the bottom plate includes a bottom plate connecting portion, and The bottom plate connection portion has a bottom plate connection hole; wherein the shape of the third opening is an elongated shape, and the shape of the bottom plate connection hole is circular.

In a preferred embodiment, the button further includes a balance bar, and the balance bar includes a link portion and a hook portion, wherein the diameter of the hook portion is similar to the width of the connection hole of the bottom plate, and the link The diameter of the portion is smaller than the width of the third opening; when the keycap is pressed, the hook portion rotates in the connection hole of the bottom plate, and the link portion rotates and slides in the third opening.

In short, the keycap of the keyboard of the present invention uses a first restricted hook and a second restricted hook of a non-open structure, which is different from the open hook of the conventional technology. The hook is formed by the elastic bundle structure on both sides, so the connecting element is not easy to come off when sliding. In other words, the width of the second opening of the second limiting hook is greater than the diameter of the third connecting portion, so that the third connecting portion can slide in the second opening, and the sliding of the third connecting portion can be controlled by the second limiting type. The hook is blocked, so the second frame cannot be easily detached from the second restricted hook of the keycap. On the other hand, since the lengths of the two elastic restraint structures in the second limiting hook are longer than the conventional techniques The length of the open-type hook is short. In the process of assembling the keycap and the connecting element, the interference amount between the third connecting portion and the second limiting hook can be reduced, so the keycap and the connecting element can be reduced. It is difficult to assemble, which is beneficial to the assembly operation.

In addition, according to the structure of the balance bar, the keycap further includes a third limiting hook corresponding to the balance bar, and the bottom plate further includes a connecting frame corresponding to the balance bar, and the keycap and the bottom plate are connected by the balance bar. Among them, the hook portion of the balance bar rotates without sliding only when the connecting frame is rotated, so the collision of the metal material between the hook portion and the connecting frame can be reduced, and noise can be reduced.

1, 2, 3‧‧‧ keyboard

10, 10 ’, 20’, 30 ’‧‧‧ buttons

11, 21‧‧‧ floor

12‧‧‧ Membrane Switch Circuit

22‧‧‧Switch circuit board

101, 201, 301‧‧‧Keycaps

102‧‧‧Scissor-type connection element

103‧‧‧Elastic rubber body

104, 304‧‧‧ balance bar

111, 211‧‧‧ First floor hook

112, 212‧‧‧Second floor hook

113、313‧‧‧Connector

202, 302‧‧‧ connecting element

203, 303‧‧‧Elastic element

1011, 2011, 3011

1012‧‧‧Open Card Hook

1013, 2012, 3012‧‧‧‧ Second limit type hook

1021, 2021, 3021 ‧‧‧ first frame

1022, 2022, 3022‧‧‧ Second frame

1041, 3041‧‧‧ connecting rod

1042, 3042‧‧‧ hook

1021A, 2021A, 3021A‧‧‧ First connecting section

1022A, 2022A, 3022A‧‧‧ Third connecting part

1022B, 2022B, 3022B‧‧‧ Fourth connection

2021B, 3021B‧‧‧Second connection section

1131‧‧‧ sliding hole

3013‧‧‧The third limit type hook

3014‧‧‧Cap brim

3131‧‧‧ bottom plate connection hole

1011A‧‧‧Opening

2011A, 3011A‧‧‧The first opening

2012A, 3012A‧‧‧Second opening

3013A‧‧‧Third opening

L1‧‧‧ length of keycap

P1‧‧‧First position

P2‧‧‧Second position

P3‧‧‧Third position

P4‧‧‧Fourth position

W1‧‧‧Keycap width

W2‧‧‧Width of the first opening

W3‧‧‧Width of the second opening

W4‧‧‧ diameter of the third connecting part

W5‧‧‧Width of the third opening

W6‧‧‧ diameter of connecting rod

FIG. 1 is a schematic diagram of the appearance and structure of a conventional keyboard.

FIG. 2 is an exploded view of a partial structure of a conventional keyboard.

FIG. 3 is a schematic structural diagram of a keycap of a conventional keyboard.

FIG. 4 is a partial structure diagram of a conventional keyboard.

FIG. 5 is a schematic diagram of a partial structure of a conventional keyboard under pressure.

FIG. 6 is an exploded view of a partial structure of the keyboard of the present invention in the first preferred embodiment.

FIG. 7 is a schematic structural diagram of a keycap of a keyboard of the present invention in the first preferred embodiment.

FIG. 8 is a schematic cross-sectional view showing a partial structure of a keyboard of the present invention in the first preferred embodiment.

FIG. 9 is a schematic cross-sectional view of a partial structure of a keyboard of the present invention which is pressed in the first preferred embodiment.

FIG. 10 is an exploded view of a partial structure of a keyboard of the present invention in a second preferred embodiment.

11 is a schematic structural diagram of a keycap of a keyboard of the present invention in a second preferred embodiment.

FIG. 12 is a partial structural diagram of a keyboard of the present invention in a second preferred embodiment.

13 is a schematic cross-sectional view showing a partial structure of a keyboard of the present invention in a second preferred embodiment.

14 is a schematic cross-sectional view of a partial structure of a keyboard of the present invention which is pressed in the second preferred embodiment.

In view of the problems caused by the conventional technology, the present invention provides a keyboard capable of solving the conventional technical problems. First, the structure of the keyboard of the present invention will be described. Please refer to FIG. 6 and FIG. 7 at the same time. FIG. 6 is an exploded view of the partial structure of the keyboard of the present invention in the first preferred embodiment, and FIG. Schematic diagram of the structure in the first preferred embodiment. FIG. 6 and FIG. 7 use buttons without a balance bar as an example. The keyboard 2 of the present invention includes a plurality of keys 20 '(only one is shown in the figure), a base plate 21, and a switch circuit board 22, and the keys 20' include a key cap 201, a connecting element 202, and an elastic element 203. The keys 20 'can be used by a user to press a finger to generate a corresponding signal to a computer (not shown) connected to the keyboard 2 so that the computer performs the function of the pressed key.

In FIG. 7, the keycap 201 exposed outside the keyboard 2 includes a plurality of first limiting hooks 2011 and a plurality of second limiting hooks 2012. The first limiting type hook 2011 is disposed on the inner surface of the keycap 201 and is located on the first side of the keycap 201. Among them, the limiting type hook is defined as a hook of a laterally closed structure, and each first limiting type The hook 2011 has a first opening 2011A. The second restrictive hooks 2012 are disposed on the inner surface of the keycap 201 and on the second side of the keycap 201, wherein each second restrictive hook 2012 has a second opening 2012A. In the preferred embodiment, the shape of the first opening 2011A is circular, and the shape of the second opening 2012A is long.

Please refer to FIG. 6, FIG. 7 and FIG. 8 at the same time. FIG. 8 is a schematic cross-sectional view showing a partial structure of the keyboard of the first preferred embodiment of the present invention. The bottom plate 21 is disposed below the keycap 201 And connected to the connecting element 202, which can carry a plurality of keys 20 'thereon. The bottom plate 21 includes a plurality of first bottom plate hooks 211 and a plurality of second bottom plate hooks 212. The switch circuit board 22 is located below the plurality of keys 20 ', and its function is to be triggered by the keys 20' to output corresponding key signals. The elastic element 203 is located between the corresponding keycap 201 and the switch circuit board 22. The elastic element 203 can be pushed by the keycap 201 to abut the switch circuit board 22 to trigger the switch circuit board 22. In the preferred embodiment, the switch circuit board 22 is a thin film switch circuit, the elastic element 203 is an elastic rubber body, and the bottom plate 21 is made of a metal material.

The connecting element 202 is connected to the first limiting hook 2011 and the second limiting hook 2012, respectively. The connecting element 202 includes a first frame 2021 and a second frame 2022. The first frame 2021 is connected to the first limiting hook 2011 and the first bottom plate hook 211, respectively, and the first connection portion 2021A of the first frame 2021 projects into the first opening 2011A, and the second frame 2021 The connecting portion 2021B extends into the first bottom plate hook 211. The second frame 2022 is rotatably connected to the first frame 2021, and the second frame 2022 is connected to the second restricted hook 2012 and the second bottom plate hook 212, respectively. The third connection portion 2022A of the second frame 2022 extends into The second opening hole 2012A is inside, and the fourth connecting portion 2022B of the second frame 2022 extends into the second bottom plate hook 212. In the preferred embodiment, the connection element 202 is a scissors-type connection element, and the scissors-type connection element is made of a plastic material.

It can be seen from FIG. 8 that the width of the first opening 2011A is similar to the diameter of the first connecting portion 2021A, and both are approximately equal to W2, and the width W3 of the second opening 2012A is larger than the width W4 of the third connecting portion 2022A. With the above structure, the first connecting portion 2021A can only be rotated in the first opening 2011A of the first restricting hook 2011, and the third connecting portion 2022A can be opened in the second opening of the second restricting hook 2012. The hole 2012A rotates and slides.

Next, the operation of each element when the key 20 'of the keyboard 2 of the present invention is pressed is described. Please refer to FIG. 8 and FIG. 9 at the same time. FIG. 9 is a keyboard according to the first preferred embodiment of the present invention. Schematic cross-sectional view of a partially pressed structure. When the user presses the keycap 201 of the button 20 ', the keycap 201 moves downward relative to the bottom plate 21, so that the first frame 2021 and the second frame 2022 of the scissors-type connection element 202 are changed from the open state to the superimposed state. . Among them, in the first frame 2021, the first connection portion 2021A rotates in the first opening 2011A of the first restrictive hook 2011, and the second connection portion 2021B rotates and slides in the first bottom plate hook 211. On the other hand, in the second frame 2022, the third connecting portion 2022A rotates and slides in the second opening 2012A of the second restricting hook 2012, and the fourth connecting portion 2022B rotates in the second bottom plate hook 212. In short, the first connecting portion 2021A only rotates without sliding in the first opening 2011A, and the third connecting portion 2022A slides from the first position P1 to the second position P2 in the second opening 2012A, as shown in FIG. 9 Show. Thereby, the keycap 201 is moved downward and pushed against the elastic element 203.

The downwardly moving keycap 201 pushes against the elastic element 203, causes the elastic element 203 to abut and deforms and triggers the switch circuit board 22, so that the switch circuit board 22 generates a key signal corresponding to the keycap 201. When the user no longer presses the button 20 ′, the keycap 201 moves upward relative to the bottom plate 21 in response to the elastic force generated by the elastic element 203 from the deformed state recovery. At this time, the first frame 2021 and the second frame 2022 The overlapped state is restored to the open state, and the keycap 201 is restored to the position before being pressed.

It can be known from the structure of the keyboard 2 that the keycap 201 of the keyboard 2 of the present invention uses a non-open first restricted hook 2011 and a second restricted hook 2012. Compared with the conventional open hook, the first The length of the hooks of the two-restricted hooks 2012 is shorter than that of the open hooks. Therefore, in the process of assembling the keycap 201 and the connecting element 202, the interference amount between the third connecting portion 2022A and the second limiting hook 2012 can be reduced to reduce the difficulty of assembling the keycap 201 and the connecting element 202.

On the other hand, the shape of the second opening 2012A of the second limiting hook 2012 is a long shape, and the width W3 of the second opening 2012A is greater than the width of the third connecting portion 2022A. W4, so that the third connecting portion 2022A of the second frame 2022 can slide in the second opening hole 2012A, and when the third connecting portion 2022A slides to the second position P2, it can be blocked by the second limiting hook 2012, so the first The two frames 2022 are not easily detached from the second limiting hook 2012 of the keycap 201. Therefore, the keyboard 2 of the present invention can improve the problems of the conventional technology.

In addition, the present invention further provides a second preferred embodiment different from the above. Please refer to FIG. 10, FIG. 11 and FIG. 12 at the same time. FIG. 10 is an exploded view of a partial structure of the keyboard of the present invention in the second preferred embodiment, and FIG. 11 is a key cap of the keyboard of the present invention in the second preferred embodiment. FIG. 12 is a schematic structural view of a keyboard of the present invention in a second preferred embodiment. The keyboard 3 of the present invention includes a plurality of keys 30 '(only one is shown in the figure), a base plate 31 and a switch circuit board 32, and the keys 30' include a keycap 301, a connecting element 302, an elastic element 303, and a balance bar 304. The keycap 301 includes a plurality of first restricted hooks 3011, a plurality of second restricted hooks 3012, and a plurality of third restricted hooks 3013. The first restricted hook 3011 has a first opening 3011A and a second restriction. The hook 3012 has a second opening 3012A. The bottom plate 31 includes a plurality of first bottom plate hooks 311, a plurality of second bottom plate hooks 312, and a plurality of connecting brackets 313. The structure of the keyboard 3 of the present invention is substantially similar to the keyboard 2 of the foregoing preferred embodiment, and the same points are not described again. The difference between the two is the balance bar 304 of the button 30 'and the plurality of connecting brackets 313 of the bottom plate 31.

In FIGS. 10, 11 and 12, the third restricting hook 3013 of the keycap 301 is located on the first side of the keycap 301 and is close to the edge portion 3014 of the keycap 301. The third restricting hook 3013 has Third opening 3013A. On the other hand, the connection frame 313 of the bottom plate 31 has a bottom plate connection hole 3131. In the preferred embodiment, the shape of the third opening 3013A is a long shape, and the shape of the bottom plate connection hole 3131 is a circle.

Please refer to FIG. 10, FIG. 11, FIG. 12, and FIG. 13 at the same time. FIG. 13 is a schematic cross-sectional view of a partial structure of a keyboard according to a second preferred embodiment of the present invention. Button 30 ’balance bar 304 It is disposed below the keycap 301 and extends into the third opening 3013A and the bottom plate connection hole 3131, respectively, and is connected to the keycap 301 and the bottom plate 31, respectively. The balance bar 304 includes a link portion 3041 and a second hook portion 3042. The balance bar 304 can be connected to the keycap 301 by extending the link portion 3041 into the third opening 3013A, and the two hook portions 3042 are respectively located at the link portion 3041. At the two ends, each hook portion 3042 corresponds to a bottom plate connection hole 3131 and can pass through the bottom plate connection hole 3131 to fix the balance bar 304 on the bottom plate 31. In this preferred embodiment, the connecting rod portion 3041 and the hook portion 3042 are integrally formed with the balance rod 304 and are made of a metal material.

As can be seen from FIGS. 10, 12 and 13, the width W3 of the second opening 3012A is larger than the diameter W4 of the third connection portion 3022A. With the above structure, the third connecting portion 3022A can rotate and slide in the second opening 3012A of the second limiting hook 3012. The width of the hook portion 3042 is similar to the width of the bottom plate connection hole 3131, and the diameter W6 of the link portion 3041 is smaller than the width W5 of the third opening 3013A, so that the hook portion 3042 can rotate only in the bottom plate connection hole 3131, and the link portion 3041 can rotate and slide in the third opening 3013A.

Next, the operation of each component when the key 30 'of the keyboard 3 of the present invention is pressed is described. Please refer to FIG. 13 and FIG. 14 at the same time. FIG. 14 is a schematic cross-sectional view of a partial structure of the keyboard of the present invention being pressed in the second preferred embodiment. When the user presses the keycap 301 of the button 30 ', the keycap 301 moves downward relative to the bottom plate 31, so that the first frame 3021 and the second frame 3022 of the scissors-type connection element 302 are changed from the open state to the superimposed state. . The first connection portion 3021A of the first frame 3021 rotates in the first opening 3011A of the first restriction hook 3011, and the second connection portion 3021B rotates and slides in the first bottom plate hook 311. At the same time, the third connecting portion 3022A of the second frame 3022 rotates and slides in the second opening 3012A of the second limiting hook 3012, and the fourth connecting portion 3022B rotates in the second bottom plate hook 312.

On the other hand, while the second frame 3022 is swinging relative to the first frame 3021, the hook portion 3042 is rotated in the corresponding bottom plate connection hole 3131, and the link portion 3041 is elongated. The shaped third opening 3013A rotates and slides inside. In short, the operation of the connecting element 302 is as follows: the first connecting portion 3021A only rotates within the first opening 3011A without sliding, and the third connecting portion 3022A slides from the first position P1 to the second in the second opening 3012A Position P2. The operation of the balance bar 304 is as follows: the hook portion 3042 only rotates within the bottom plate connection hole 3131 without sliding, and the link portion 3041 slides from the third position P3 to the fourth position P4 in the third opening 3013A, as shown in FIG. 14 As shown. Thereby, the keycap 301 is moved downward and pushed against the elastic element 303.

The keycap 301 moving downward pushes the elastic element 303, deforms the elastic element 303 and triggers the switch circuit board 32, so that the switch circuit board 32 generates a key signal corresponding to the keycap 301. When the user no longer presses the button 30 ′, the keycap 301 moves upward relative to the bottom plate 31 in response to the elastic force generated by the elastic element 303 recovering from the deformed state. At this time, the first frame 3021 and the second frame 3022 The folded state is restored to the open state, and the keycap 301 is restored to the position before being pressed.

In this preferred embodiment, the first base plate hook 311, the second base plate hook 312, and the connecting bracket 313 are integrally formed with the base plate 31, and the base plate 31 is made of a metal material. In the process of pressing the keycap 301 of the keyboard 3 of the present invention, except that the first frame 3021 and the second frame 3022 are not easily separated from the keycap 301, the shape of the third opening 3013A corresponding to the link portion 3041 is It is a long bar instead of an open hook, so the balance bar 304 is not easy to be disengaged from the inside of the keycap 301.

It should be particularly noted that, for the balance bar 304, what rotates and slides is the link portion 3041 connected to the keycap 301, and the hook portion 3042 connected to the base plate 31 made of metal material only rotates without Sliding, and the hook portion 3042 is also made of a metal material, so the metal material collision between the hook portion 3042 and the connecting frame 313 can be reduced, and noise can be reduced.

According to the above, the keycap of the keyboard of the present invention adopts a first restricted hook and a second restricted hook of a non-open structure, wherein the first opening of the first restricted hook is Round, for the first connecting part of the connecting element to rotate inside; the second opening of the second limiting hook is elongated, for the third connecting part of the connecting element to rotate and slide inside. Different from the open hook of the conventional technology, the second restricted hook of the keyboard of the present invention is formed by elastic binding structures on both sides, so the connecting element is not easy to come off when sliding. In other words, the width of the second opening of the second limiting hook is greater than the diameter of the third connecting portion, so that the third connecting portion can slide in the second opening, and the sliding of the third connecting portion can be controlled by the second limiting type. The hook is blocked, so the second frame cannot be easily detached from the second restricted hook of the keycap.

On the other hand, since the length of the two elastic binding structures in the second limiting hook is shorter than the length of the open hook of the conventional technology, during the process of assembling the keycap and the connecting element, the third connecting portion and the first The amount of interference between the two limiting hooks can be reduced, which can reduce the difficulty of assembling the keycap and the connecting element, which is beneficial to the assembly operation.

In addition, according to the structure of the balance bar, the keycap further includes a third limiting hook corresponding to the balance bar, and the bottom plate further includes a connecting frame corresponding to the balance bar, and the keycap and the bottom plate are connected by the balance bar. Among them, the hook portion of the balance bar rotates without sliding only when the connecting frame is rotated, so the collision of the metal material between the hook portion and the connecting frame can be reduced, and noise can be reduced.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of patent application of the present invention. Therefore, all other equivalent changes or modifications made without departing from the spirit disclosed by the present invention should be included in this case. Within the scope of patent application.

Claims (10)

A keyboard includes: a key, including: a key cap, which is exposed outside the keyboard, and includes: a first restricted hook, which is disposed on an inner surface of the key cap and is located on the first of the key cap. One side; wherein, the first restrictive hook has a first opening, and the first restrictive hook is a laterally closed structure; and a second restrictive hook is provided in the keycap. On the surface, and located on a second side of the keycap; wherein the second restricting hook has a second opening, and the second restricting hook is a laterally closed structure; and a connecting element, respectively The connecting element is connected to the first limiting hook and the second limiting hook. The connecting element includes a first frame connected to the first limiting hook, and a first connection portion of the first frame extends. Into the first opening; and a second frame connected to the first frame and the second limiting hook, respectively, and a third connection portion of the second frame projects into the second opening; And a bottom plate, arranged below the keycap and connected to the connecting element For supporting the key; wherein the width similar to the diameter of the first connecting portion of the first opening, the width of the second aperture which is larger than the diameter of the third connecting portion. The keyboard described in item 1 of the patent application range further includes a switch circuit board located below the key for triggering the key to output a key signal; and the key further includes an elastic element located on the key cap. And between the switch circuit board for being pushed by the keycap to abut the switch circuit board; wherein when the elastic element is no longer pushed by the keycap, the elastic element provides an elastic force to the key cap. The keyboard according to item 2 of the scope of patent application, wherein when the keycap is touched, the second frame is pushed against and rotates relative to the first frame, and the first connection portion is opened at the first opening. The hole rotates, and the third connecting portion rotates and slides in the second opening, so that the keycap is pushed against the elastic element. The keyboard according to item 1 of the patent application scope, wherein the bottom plate comprises: a first bottom plate hook located on a first side of the bottom plate for connecting with a second connection portion of the first frame; And a second bottom plate hook located on a second side of the bottom plate for connecting with a fourth connection portion of the second frame; wherein when the keycap is pressed, the second connection portion is The first bottom plate hook rotates and slides inside, and the fourth connecting portion rotates inside the second bottom plate hook. The keyboard according to item 1 of the scope of patent application, wherein the shape of the second opening is an elongated shape, and the shape of the first opening is a circular shape. The keyboard according to item 1 of the patent application scope, wherein the keycap further includes a third limiting hook, which is located on the first side of the keycap and close to a brim portion of the keycap, and the The third limiting hook has a third opening; and the bottom plate includes a connecting frame, and the connecting frame has a bottom plate connecting hole. The keyboard according to item 6 of the scope of patent application, wherein the shape of the third opening is an elongated shape, and the shape of the bottom plate connection hole is circular. The keyboard according to item 6 of the scope of patent application, wherein the key further includes a balance bar, which is arranged below the keycap and extends into the third opening and the bottom plate connection hole, respectively. The balance bar includes : A link portion extending into the third opening and connected to the keycap; and a hook portion located at one end of the link portion and extending into the connection hole of the bottom plate to be connected to the bottom plate; wherein The diameter of the hook portion is similar to the width of the connection hole of the bottom plate, and the diameter of the link portion is smaller than the width of the third opening. The keyboard according to item 8 of the scope of patent application, wherein when the keycap is pressed, the hook portion rotates in the connection hole of the bottom plate, and the link portion rotates and slides in the third opening hole. The keyboard according to item 8 of the scope of patent application, wherein the link portion and the hook portion are integrally formed with the balance rod and are made of a metal material.