CN107240525A - Keyboard with a keyboard body - Google Patents

Abstract

The invention discloses a keyboard, which comprises a bottom plate, a key cap, a scissor-type connecting element with a convex block and a sliding plate with a limiting structure. The keyboard is arranged in a notebook computer and connected with the upper cover of the notebook computer. When the user wants to operate the keyboard, the bump is located in the first section difference part of the limiting structure, so that the key cap is located at a higher position. Because the height of the key cap is higher, the movable distance of the key cap is larger, and better touch feeling of a user can be provided. When the keyboard is covered by the upper cover, the lug on the scissors type connecting element is moved into the second section difference part of the limiting structure, so that the height of the key cap is reduced, and the thickness of the keyboard is reduced.

Description

keyboard

technical field

The invention relates to a keyboard, in particular to a thinner keyboard.

Background technique

Common computer peripheral input devices include a mouse, a keyboard, and a trackball. The keyboard can directly input text and symbols to the computer, so it is highly valued by users and input device manufacturers. Among them, the more common one is a keyboard that includes a scissor-type connecting element.

Next, the structure of the keyboard including the scissor-type connection element is described, and a single key in the keyboard is illustrated. Please refer to FIG. 1 , which is a schematic cross-sectional side view of a key of a conventional keyboard. The existing button 1 includes a button cap 11, a scissors-type connection element 12, an elastic rubber body 13, a membrane switch circuit 14, and a bottom plate 15, and the bottom plate 15 is used to carry the second key cap 11, the scissors-type connection element 12, and the elastic rubber body 13 And membrane switch circuit 14. Wherein the scissor-type connecting element 12 is used to connect the bottom plate 15 and the key cap 11 .

The membrane switch circuit 14 has a plurality of key contacts (not shown in the figure). The key contact outputs a corresponding key signal when triggered. The elastic rubber body 13 is arranged on the membrane switch circuit 14 and one elastic rubber body 13 corresponds to a button contact. When the elastic rubber body 13 is pressed, the elastic rubber body 13 deforms and touches the corresponding contact in the membrane switch circuit 14 The key contact generates a key signal.

The scissor-type connection element 12 is located between the bottom plate 15 and the keycap 11 and connects them respectively. The scissors connection element 12 includes a first frame 121 and a second frame 122 . A first end of the first frame 121 is connected to the keycap 11 , and a second end of the first frame 121 is connected to the bottom plate 15 . The elastic rubber body 13 is surrounded by the scissors connection element 12 . In addition, the first frame 121 includes a first key cap shaft 1211 and a first base shaft 1212 . The first frame 121 is connected to the keycap 11 through the first keycap shaft 1211 , and is connected to the bottom plate 15 through the first bottom plate shaft 1212 . The second frame 122 is combined with the first frame 121 , and the first end of the second frame 122 is connected to the base plate 15 , and the second end of the second frame 122 is connected to the keycap 11 . Wherein, the second frame 122 includes a second key cap shaft 1221 and a second bottom board shaft 1222 . The second frame 122 is connected to the keycap 11 through its second keycap axle 1221 , and is connected to the bottom plate 15 through the second bottom plate axle 1222 .

Next, the operation situation of the user pressing the existing button 1 will be described. In Fig. 1, when the user touches the key cap 11, the key cap 11 is forced to push against the scissors-type connecting element 12 to make it move, so the key cap 11 can move downward relative to the bottom plate 15 and press the corresponding elastic Rubber body13. At this time, the elastic rubber body 13 deforms and touches the membrane switch circuit 14 to trigger the key contacts of the membrane switch circuit 14 , so that the membrane switch circuit 14 outputs a corresponding key signal. And when the user stops pressing the keycap 11, the keycap 11 is no longer under force and stops touching the elastic rubber body 13, so that the elastic rubber body 13 returns to its original shape in response to its elasticity, and provides upward elastic restoring force at the same time. The cap 11 is thus pushed back to the position it was in before being pressed.

Since the recent trend of various electronic devices and their peripheral devices is light and thin and portable, the keyboard and other peripheral input devices of the computer must also be thin and light. Among them, there are two ways to reduce the thickness of the keyboard. First, reduce the thickness of some or all components in the key, and second, shorten the moving distance of the key (defined as the stroke). The above-mentioned first method will cause the structural strength of the key to be weakened and easily damaged, while the second method will cause the key structure to have a poor touch feeling. In short, it is difficult to have both a thin and light appearance and a tactile feel.

Therefore, there is a need for a keyboard with low thickness and good tactile feel.

Contents of the invention

The object of the present invention is to provide a keyboard with low thickness and good touch feeling.

In a preferred embodiment, the present invention provides a keyboard, which includes a plurality of keycaps, a plurality of scissor-type connecting elements, a bottom plate and a sliding plate. The plurality of keycaps are exposed outside the keyboard, each of the scissor-type connection elements corresponds to one of the keycaps and is connected to the corresponding keycap, the at least one scissor-type connection element has a protrusion, and the protrusion A block protrudes from a side wall of the at least one scissor connection element. The base plate is connected to the plurality of scissor-type connecting elements for carrying the plurality of keycaps and the plurality of scissor-type connecting elements. The sliding plate is arranged below the bottom plate, and is used to be pushed against and slide relative to the bottom plate. The sliding plate has a plurality of position-limiting structures, and each position-limiting structure corresponds to a protrusion, and the protrusion extends into the In the limiting structure; wherein, when the sliding plate slides relative to the bottom plate, the relative position of the protrusion and the limiting structure changes, thereby changing the height of the key cap.

In a preferred embodiment, each of the limiting structures includes a first step portion, a second step portion and a junction portion. The first step portion is located on a first side of the limiting structure for accommodating the protrusion. The second step portion is located on a second side of the limiting structure for accommodating the protrusion; wherein the height of the second step portion is lower than that of the first step portion. The interface portion is located between the first step portion and the second step portion, and is used for pushing against the protrusion when the sliding plate slides in a first direction relative to the base plate so that the protrusion enters the second step portion. Segment Department.

In short, the keyboard of the present invention provides a function of changing the height of the keys. When the user intends to operate, the protrusion on the control scissors-type connecting element is located in the first step portion of the limiting structure, so that the key cap is located at a higher height. Since the height of the key cap is not limited, the movable distance of the key cap is relatively large, thereby providing a better touch feeling for the user. When the user intends to store the keyboard, the protrusion on the control scissors-type connecting element is located in the second step portion of the limiting structure, so that the height of the key cap is reduced to have a thinner appearance. Therefore, the keyboard of the present invention can indeed solve the problems of the prior art.

Description of drawings

FIG. 1 is a schematic cross-sectional side view of a key of a conventional keyboard.

FIG. 2 is a schematic cross-sectional side view of the keyboard in the first preferred embodiment of the present invention.

Fig. 3 is an exploded schematic diagram of a partial structure of the keyboard in the first preferred embodiment of the present invention.

Fig. 4 is a partial structural diagram of the keyboard in the first preferred embodiment of the present invention.

Fig. 5 is a schematic side view of the partial structure of the keyboard in the first preferred embodiment of the present invention.

Fig. 6 is a schematic side view of the partial structure of the keyboard of the present invention being pressed in the first preferred embodiment.

Fig. 7 is a schematic side view of the partial structure of the keyboard of the present invention being housed in the first preferred embodiment.

FIG. 8 is a schematic cross-sectional side view of the keyboard in the second preferred embodiment of the present invention.

9A-9B are schematic cross-sectional side views of the keyboard in the third preferred embodiment of the present invention.

10A-10B are schematic cross-sectional side views of the fourth preferred embodiment of the keyboard of the present invention.

【Symbol Description】

1 button

2, 3, 4, 5 keypads

11, 21, 31 key caps

12, 22, 32 Scissor connection elements

13 elastic rubber body

14, 24, 34 membrane switch circuit

15, 25, 35 base plates

20, 30, 40, 50 base

23, 33 Elastic elements

26, 36, 46, 56 slide plate

27, 37, 47, 57 top cover

48 axis of rotation

49 connecting rod

58 drive mechanism

121 First frame

122 Second frame

201, 371 linkage

202 elastic mechanism

211 First button cap hook

212 Second button cap hook

221 inner frame

222 outer frame

223 bumps

251 Hook of the first bottom plate

252 Hook of the second bottom plate

260 second guide slope

261 limit structure

262 The First Division

263 The Second Section

264 Junction

200, 300 Laptops

1211 First button cap shaft post

1212 First base plate axle column

1221 Second button cap shaft post

1222 Second base plate axle column

2011 First guide ramp

D first direction

H1 first height

H2 second height

Ha Height of the first section difference

Hb Height of the second stage difference

detailed description

The invention provides a keyboard that can give users a good touch and pressure feeling, and can maintain a thin and light appearance, so as to solve the problems in the prior art. Please refer to FIG. 2 and FIG. 3 at the same time. FIG. 2 is a schematic cross-sectional side view of the keyboard in the first preferred embodiment of the present invention, and FIG. 3 is an exploded schematic diagram of a partial structure of the keyboard in the first preferred embodiment of the present invention. In this embodiment, the keyboard 2 is set in a notebook computer 200 . The keyboard 2 includes a base 20 , a plurality of key caps 21 , a plurality of scissor-type connecting elements 22 , a plurality of elastic elements 23 , a membrane switch circuit 24 , a bottom plate 25 and a sliding plate 26 . The base 20 is connected to the upper cover 27 , and the upper cover 27 is rotatable relative to the base 20 to cover the base 20 , wherein the base 20 and the upper cover 27 together form a shell structure of the notebook computer 200 .

A plurality of keycaps 21 are exposed from the keyboard 22 and can be pressed by the user. Each scissor-type connection element 22 corresponds to a key cap 21 and is connected to the corresponding key cap 21 . Each keycap 21 includes a first keycap hook 211 and a second keycap hook 212 . Wherein, the first key cap hook 211 is disposed on the first side of the key cap 21 , and the second key cap hook 212 is disposed on the second side of the key cap 21 . The base plate 25 is connected to a plurality of scissor-type connecting elements 22, which can carry a plurality of key caps 21, a plurality of scissor-type connecting elements 22, a plurality of elastic elements 23 and a membrane switch circuit 23, and the base plate 25 includes a plurality of first base plate cards hook 251 and a plurality of second bottom plate hooks 252 .

Please continue to refer to FIG. 2 and FIG. 3, the scissors-type connecting element 22 includes an inner frame 221 and an outer frame 222, the first end of the inner frame 221 is connected to the first key cap hook 211 of the corresponding key cap 21, and the inner frame The second end of the 221 is connected to the first bottom hook 251 of the bottom 25 . The outer frame 222 is combined with the inner frame 221, and the outer frame 222 can rotate relative to the inner frame 221. The first end of the outer frame 222 is connected to the second bottom plate hook 252 of the bottom plate 25, and the second end of the outer frame 222 is connected to the Corresponding to the second keycap hook 212 of the keycap 21 , the outer frame 222 has a protrusion 223 , and the protrusion 223 is disposed on and protrudes from the sidewall of the outer frame 222 . In this preferred embodiment, the protruding block 223 and the outer frame 222 are integrally formed, which is only for illustration and not limited thereto.

Each elastic element 23 corresponds to a keycap 21 and is arranged below the corresponding keycap 21, while the membrane switch circuit 24 is arranged on the top of the bottom plate 25 and is in contact with a plurality of elastic elements 23, which can be covered by a plurality of elastic elements. 23 is triggered to output a plurality of corresponding button signals. The structure of the membrane switch circuit 24 is substantially the same as that described in the prior art, so it will not be repeated here. In this preferred embodiment, the elastic element 23 is an elastic rubber body. And the sliding plate 26 is arranged on the bottom of the base plate 25, which can be pushed against and slide relative to the base plate 25. The sliding plate 26 has a plurality of position-limiting structures 261, and each position-limiting structure 261 corresponds to a protrusion 223, and the protrusions 223 protrudes into the corresponding limiting structure 261. Wherein, when the sliding plate 26 slides relative to the bottom plate 25 , the relative position of the protrusion 223 and the limiting structure 261 changes, thereby changing the height of the key cap 21 .

Please refer to FIG. 4 and FIG. 5 at the same time. FIG. 4 is a schematic diagram of a partial structure of the keyboard in the first preferred embodiment of the present invention, and FIG. 5 is a schematic side view of a partial structure of the keyboard in the first preferred embodiment of the present invention. Each limiting structure 261 includes a first level difference portion 262 , a second level difference portion 263 and an interface portion 264 . The first level difference portion 262 is located on a first side of the limiting structure 261 and can accommodate the protrusion 223 therein. The second step portion 263 is located on the second side of the limiting structure 261 and can also accommodate the protrusion 223 therein, wherein the height Hb of the second step portion 263 is lower than the height Ha of the first step portion 262 . The interface portion 264 is located between the first stage difference portion 262 and the second stage difference portion 263. When the sliding plate 26 slides in the first direction D relative to the bottom plate 25, the interface portion 264 pushes against the protrusion 223 so that the protrusion 223 enters the second stage. Step difference part 263 .

Please refer to FIG. 2 again, the base 20 has a plurality of linkages 201 (only one is shown in the figure), the linkages 201 are arranged in the base 20 and partially protrude from the base 20, and the linkages 201 are arranged in The part inside the base 20 is in contact with the sliding plate 26 , wherein the first inclined guide surface 2011 below the linkage 201 is in contact with the second inclined guide surface 260 on one side of the sliding plate 26 . When the upper cover 27 covers the base 20, the upper cover 27 pushes down against the plurality of linkages 201 so that the first guide slopes 2011 of the plurality of linkages 201 push against the second guide slope 260 of the sliding plate 26, thereby pushing the sliding The plate 26 slides in the first direction D relative to the bottom plate 25 .

Next, the operation of pressing the keys of the keyboard of the present invention will be described. Please refer to FIG. 5 and FIG. 6 at the same time. FIG. 6 is a schematic side view of the partial structure of the keyboard of the present invention being pressed in the first preferred embodiment. When the user presses a key cap 21 with force, the key cap 21 is forced to push down against the corresponding scissor-type connecting element 22, and the outer frame 222 can rotate relative to the inner frame 221 to make the scissor-type connecting element 22 Swinging, at this time, the protrusion 223 moves from the inside of the first step portion 262 toward the direction of the membrane switch circuit 24 (ie, downward) and away from the first step portion 262 . On the other hand, the keycap 21 pushes down the corresponding elastic element 23 to deform it and touch the membrane switch circuit 24, so as to trigger the key contacts (not shown in the figure) in the membrane switch circuit 24, so that the membrane The switch circuit 24 outputs corresponding key signals as shown in FIG. 6 .

When the user stops pressing the key cap 21 , the key cap 21 is no longer under force and stops pressing the elastic element 23 , so that the elastic element 23 returns to its original shape due to its elasticity, and simultaneously provides upward elastic restoring force to the key cap 21 . At this time, the outer frame 222 can rotate relative to the inner frame 221 to make the scissors-type connecting element 22 swing, and the key cap 21 can be restored to the position before being pressed. Wherein, the protrusion 223 returns to the position inside the first step portion 262 , as shown in FIG. 5 . It should be noted that the up and down movement distance of the bump 223 is designed to match the stroke of the key cap 21, that is to say, the up and down movement of the bump 223 will not affect the movement of the key cap 21 when it is pressed. operate.

Next, the operation situation of the keyboard of the present invention being accommodated is described. Please refer to FIG. 5 and FIG. 7 at the same time. FIG. 5 shows that when the protrusion 223 is located in the first step portion 262 , the keycap 21 is located at the first height H1 . When the upper cover 27 covers the base 20 , the upper cover 27 abuts against the plurality of linkages 201 , and the plurality of linkages 201 pushes against the sliding plate 26 , so that the sliding plate 26 slides in the first direction D relative to the bottom plate 25 . At this moment, the moving interface portion 264 pushes against the protruding block 223 , and the protruding block 223 is located in the second step portion 263 , so that the key cap 21 is located at the second height H2 . Wherein, the first height H2 is higher than the second height H2.

In this preferred embodiment, the base 20 further includes an elastic mechanism 202 (such as a spring), and the elastic mechanism 202 is disposed in the base 20 and contacts the sliding plate 26 . When the upper cover 27 covers the base 20 , the sliding plate 26 moves and compresses the elastic mechanism 202 according to the above operation. And when the upper cover 27 is lifted, the elastic mechanism 202 is no longer compressed and can provide elastic force to the sliding plate 26, so that the plurality of linkages 201 are pushed by the sliding plate 26 to return to the position before being pushed up. The above is for illustrative purposes only and is not limited thereto. In another preferred embodiment, the elastic mechanism can also be arranged in a plurality of linkages, which can provide elastic force when the upper cover is lifted to make more The first linkage returns to the position before being pushed against, and at the same time, since the plurality of linkages no longer push against the sliding plate, the sliding plate can slide, so that the projection is located in the first section, and the keycap can return to the second. a height. Of course, the operation of multiple linkages can also be performed by manual pressing, and it is not limited to the upper cover. Therefore, the keyboard 2 of the present invention can provide a relatively thin thickness when being stored, so as to have a light and thin appearance and be easy to carry.

It should be noted that the sliding plate 26 of the keyboard 2 of the present invention is arranged under the bottom plate 25 and does not contact the membrane switch circuit 24. Therefore, when the sliding plate 26 slides relative to the bottom plate 25, the sliding plate 26 will not contact the film. Since the switch circuit 24 is rubbed, the membrane switch circuit 24 will not be worn. In addition, also because the sliding plate 26 is arranged on the bottom of the bottom plate 25, the sliding plate 26 is suppressed by the weight of the button cap 21, the scissors type connection element 22, the elastic element 23, the membrane switch circuit 24 and the bottom plate 25, so the sliding plate 26 is relative to the bottom plate 25. When the bottom plate 25 slides, it will not be lifted and can operate stably.

Moreover, the present invention further provides a second preferred embodiment with a method different from the above. Please refer to FIG. 8 , which is a schematic cross-sectional side view of the keyboard in the second preferred embodiment of the present invention. The keyboard 3 includes a base 30, a plurality of key caps 31, a plurality of scissor-type connecting elements 32, a plurality of elastic elements 33, a membrane switch circuit 34, a bottom plate 35 and a sliding plate 36, the base 30 is connected to the upper cover 37, and the upper cover 37 The base 30 can be rotated to cover the base 30 , wherein the base 30 and the upper cover 37 together form a notebook computer 300 . The structure of the keyboard 3 of this preferred embodiment is substantially the same as that of the keyboard 2 of the aforementioned preferred embodiment, and the similarities will not be repeated here. The difference between the two is that the upper cover 37 has a plurality of linkages 371 (only one is shown in the figure). When the upper cover 37 covers the base 30, the plurality of linkages 371 can extend into the base 30 and Push against the sliding plate 36 to make the sliding plate 36 slide relative to the bottom plate 35 . The operation of the keyboard 3 of this preferred embodiment is the same as that of the keyboard 2 of the aforementioned preferred embodiment, so it will not be described again.

Moreover, the present invention further provides a third preferred embodiment which is different from the above. Please refer to FIG. 9A and FIG. 9B , which are schematic cross-sectional side views of the keyboard in the third preferred embodiment of the present invention. 9A and 9B show the partial structure of the keyboard 4, including the base 40, the sliding plate 46, the upper cover 47, the rotating shaft 48 and the connecting rod 49, and the keyboard has a plurality of key caps, a plurality of scissor-type connecting elements, a plurality of The structures of the elastic element, the membrane switch circuit and the bottom plate are the same as those of the keyboard 2 of the above-mentioned preferred embodiment, so they are not shown in the figure, and will not be described again.

The operation of the keyboard 4 of this preferred embodiment is as follows: when the upper cover 47 covers the base 40, the rotating shaft 48 connected with the upper cover 47 rotates counterclockwise and abuts against the connecting rod 49, wherein the connecting rod 49 is connected On the sliding plate 46 , the sliding plate 46 moves along with the connecting rod 49 , and the sliding plate 46 can slide in the first direction D. As shown in FIG. Due to the operation of the sliding plate 46 and the limiting structure, the key cap can be located at the second lower height. Conversely, when the upper cover 47 is lifted, the rotating shaft 48 rotates clockwise to drive the connecting rod 49 to move, and the sliding plate 46 then slides to the original position. At the same time, the key cap can be returned to Higher first height.

In addition, the present invention further provides a fourth preferred embodiment with a method different from the above. Please refer to FIG. 10A and FIG. 10B , which are schematic cross-sectional side views of the fourth preferred embodiment of the keyboard of the present invention. Fig. 10A and Fig. 10B show the partial structure of keyboard 5, comprise base 50, sliding plate 56, upper cover 57 and the drive mechanism 58 that is connected with upper cover 57 and sliding plate 56, and a plurality of key caps of keyboard, a plurality of scissors The structure of the type connection element, a plurality of elastic elements, the membrane switch circuit, and the bottom plate are all the same as those of the keyboard 2 of the above-mentioned preferred embodiment, so they are not shown in the figure, and will not be described again.

The operation of the keyboard 5 of this preferred embodiment is as follows: when the upper cover 57 covers the base 50, the driving mechanism 58 connected to the upper cover 57 is triggered to rotate counterclockwise, and the sliding plate 56 is moved in the first direction D in the past. Due to the operation of the sliding plate 56 and the limiting structure, the key cap can be located at the second lower height. Conversely, when the upper cover 57 is lifted, the driving mechanism 58 is triggered to rotate clockwise, so that the sliding plate 56 can slide to the original position, and at the same time, the key cap can be returned to the higher first height.

According to the above, it can be seen that the keyboard of the present invention provides a function of changing the height of the keys. When the user intends to operate, the protrusion on the control scissors-type connecting element is located in the first step portion of the limiting structure, so that the key cap is located at a higher height. Since the height of the key cap is not limited, the movable distance of the key cap is relatively large, thereby providing a better touch feeling for the user. When the user wants to store the keyboard, the protrusion on the control scissors-type connecting element is located in the second step portion of the limiting structure, so that the height of the key cap is reduced to have a thinner appearance. Therefore, the keyboard of the present invention can indeed solve the problems of the prior art.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the claims of the present invention. Therefore, all other equivalent changes or modifications that do not deviate from the spirit disclosed in the present invention shall be included in the present invention within the claims.

Claims (11)

1. A keyboard, comprising: a plurality of keycaps exposed from the keyboard; A plurality of scissor-type connection elements, each of the scissor-type connection elements corresponds to one of the key caps and is connected to the corresponding key cap, the at least one scissor-type connection element has a protrusion, and the protrusion protrudes from the at least one side wall of the scissors connection element; a bottom plate connected to the plurality of scissor-type connection elements for carrying the plurality of keycaps and the plurality of scissor-type connection elements; and A sliding plate is arranged below the bottom plate and is used to be pushed against and slide relative to the bottom plate. The sliding plate has a plurality of position-limiting structures, and each position-limiting structure corresponds to a protrusion, and the protrusion extends into the limiting structure; wherein, when the sliding plate slides relative to the bottom plate, the relative position of the protrusion and the limiting structure changes, thereby changing the height of the key cap. 2. The keyboard as claimed in claim 1, wherein each limiting structure comprises: a first step portion, located on a first side of the limiting structure, for accommodating the protrusion; a second step portion, located on a second side of the limiting structure, for accommodating the protrusion; wherein the height of the second step portion is lower than the height of the first step portion; and An interface part, located between the first step part and the second step part, is used for pushing against the protrusion when the sliding plate slides relative to the bottom plate in a first direction so that the protrusion enters the first step Second section. 3. The keyboard as claimed in claim 2, wherein when the sliding plate slides relative to the bottom plate and the protrusion is located in the first step portion, the key cap is located at a first height, and when the sliding plate is opposite to When the bottom plate slides toward the first direction, the interface pushes against the protrusion, and the protrusion is located in the second step portion, so that the key cap is located at a second height; wherein the first height is higher than the first height Two heights. 4. The keyboard of claim 2, further comprising: a plurality of elastic elements, each of which corresponds to one of the key caps and is arranged below the corresponding key cap; and A membrane switch circuit is arranged above the bottom plate and in contact with the plurality of elastic elements for being triggered by the plurality of elastic elements. 5. The keyboard as claimed in claim 4, wherein when the key cap is pressed, the key cap moves relative to the bottom plate and pushes against the elastic element corresponding to the key cap, so that the elastic element is deformed to trigger The membrane switch circuit, and the membrane switch circuit outputs a button signal, and the scissors-type connection element swings, so that the bump moves away from the first section difference and moves toward the membrane switch circuit; and when the button cap is no longer When pressed, the elastic element recovers from deformation to provide an elastic restoring force to push the keycap to move to the position before being pressed, and the scissors-type connecting element swings to make the protrusion enter the first Segment Department. 6. The keyboard of claim 1, wherein the at least one scissors connection element comprises: an inner frame, a first end of the inner frame is connected to the corresponding key cap, and a second end of the inner frame is connected to the bottom plate; and An outer frame, combined with the inner frame, and the outer frame can rotate relative to the inner frame, a first end of the outer frame is connected to the bottom plate, and a second end of the outer frame is connected to the corresponding A key cap; wherein, the protrusion is arranged on the side wall of the outer frame. 7. The keyboard as claimed in claim 6, wherein the protrusion is integrally formed with the outer frame. 8. The keyboard of claim 6, wherein the key caps comprise: a first key cap hook, disposed on a first side of the key cap, for connecting with the first end of the inner frame; and A second keycap hook is disposed on a second side of the keycap for connecting with the second end of the outer frame. 9. The keyboard of claim 6, wherein the chassis comprises: a plurality of hooks on the first bottom plate, used for connecting with the second end of the inner frame; and A plurality of hooks on the second bottom plate are used for connecting with the first end of the outer frame. 10. The keyboard according to claim 1, which is arranged on a base, the base is connected to an upper cover, and the base has at least one linkage, and the at least linkage is in contact with the sliding plate; wherein, when the When the upper cover covers the base, the upper cover abuts against the at least one link, and the at least one link pushes against the sliding plate, so that the sliding plate slides relative to the bottom plate. 11. The keyboard according to claim 1, arranged on a base, the base is connected to an upper cover, and the upper cover has at least one linkage; wherein, when the upper cover covers the base, the at least one The linking piece pushes against the sliding plate, so that the sliding plate slides relative to the bottom plate.