CN110571084A - Key structure - Google Patents

Abstract

The invention discloses a key structure, which comprises a base plate, a keycap and two supports connected between the base plate and the keycap, wherein the keycap can move up and down relative to the base through the two supports. In one embodiment, the bracket is pivotally connected to the base plate via a pivot structure. The pivoting structure comprises a guide groove and a protruding shaft, and is oppositely arranged on the bracket and the bottom plate. The guiding groove is provided with a concave part and can guide the protruding shaft to be clamped in the concave part. In another embodiment, the bracket includes a bracket body and an abutting arm extending from the bracket body, the bracket body is connected to the base plate through the bracket body, and the base plate restrains the bracket through the hook and the limiting column structure. The butt arm of this support stretches into the below of another support for these two supports can the interlock each other.

Description

Key structure

Technical Field

The present invention relates to a mechanical key structure, and more particularly to a mechanical key structure with a key cap supported and actuated by two supports.

Background

The traditional key structure has larger size, enjoys larger arrangement space and is beneficial to the design flexibility, such as more components, more complex structures and the like. However, when the size of the key structure is small (or the installation space is small, such as a thin key structure), the number of usable structures, the complexity of the structure, and the like are limited. In addition, the bracket of the traditional key structure is matched with a hole and a shaft. During assembly, the supports are in principle elastically deformable to enable assembly with each other, or to key caps, base plates, etc., but this may cause some permanent deformation of these components. Moreover, when the size of the key structure is small, the connecting structure is inconvenient for assembling components, and if the components are permanently deformed after being assembled, the structural stability or the smoothness of the operation of the key structure is obviously affected, and the assembly fails in a serious case, thereby reducing the yield of products and increasing the production cost of the products.

Disclosure of Invention

In view of the problems in the prior art, it is an object of the present invention to provide a key structure using a guide structure to facilitate the combination of a bracket and a bottom plate.

In order to achieve the above object, the present invention provides a key structure, comprising: bottom plate, key cap, first support and first pin joint structure. The keycap is arranged on the bottom plate; the first support is connected to the keycap; the first bracket is connected to the base plate through the first pivot structure, so that the first bracket can rotate around a first rotating axial direction relative to the base plate, and the first pivot structure comprises a first guide groove and a first protruding shaft. The first guide groove extends perpendicular to the first rotating axial direction and is provided with a first opening and a first concave part, the first concave part is recessed parallel to the first rotating axial direction, and the first guide groove is arranged on one of the first bracket and the bottom plate; the first protruding shaft is rotatably clamped in the first concave part relative to the first rotating axial direction, and the first protruding shaft is arranged on the other one of the first bracket and the bottom plate relative to the first guide groove.

In one embodiment, the keycap moves parallel to the vertical direction relative to the base plate through the first support, and the first guide groove extends parallel to the vertical direction. In one embodiment, the first guiding slot is disposed on the bottom plate, and the first protruding shaft is disposed on the first bracket. In one embodiment, the first guiding groove is formed by a first cantilever plate extending upwards from the bottom plate. In one embodiment, the first protruding shaft is formed by protruding laterally from the second cantilever plate of the first bracket. In one embodiment, the second cantilever plate extends obliquely toward the first guiding groove. In one embodiment, the first recess is a through hole. In an embodiment, the key structure further includes a second bracket connected between the keycap and the bottom plate, wherein the first bracket includes one of a locking portion and a locking piece, the second bracket includes the other of the locking portion and the locking piece, and the locking piece is locked into the locking portion, so that the first bracket and the second bracket are driven to rotate with each other.

In an embodiment, the key structure further includes a second pivot structure, wherein the second bracket is connected to the bottom plate through the second pivot structure, so that the second bracket can rotate around a second rotational axis relative to the bottom plate, the first rotational axis is parallel to the second rotational axis, the second pivot structure includes a second guiding groove and a second protruding shaft, the second guiding groove extends perpendicular to the second rotational axis and has a second opening and a second recess, the second recess is parallel to the second rotational axis and is recessed, the second guiding groove is disposed in one of the second bracket and the bottom plate, the second protruding shaft is rotatably inserted into the second recess relative to the second rotational axis, and the second protruding shaft is disposed in the other of the second bracket and the bottom plate relative to the second guiding groove.

In one embodiment, the first guiding groove and the second guiding groove are formed by plate portions extending upward from the bottom plate, the first protruding shaft is disposed on the first bracket, and the second protruding shaft is disposed on the second bracket.

In one embodiment, the first support has two opposite sides relative to the first rotation axis, and the first support is connected to the keycap on one side and is driven to rotate with the second support on the other side.

In an embodiment, the key structure further includes a second bracket connected between the key cap and the bottom plate, wherein the first bracket includes a first engaging portion and a first engaging piece, the first engaging portion and the first engaging piece are disposed in parallel to the first rotational axis at a distance, the second bracket includes a second engaging portion and a second engaging piece, the second engaging portion and the second engaging piece are disposed in parallel to the second rotational axis at a distance, the first engaging piece is engaged with the second engaging portion, and the second engaging piece is engaged with the first engaging portion, such that the first bracket and the second bracket are driven to rotate with each other.

in an embodiment, the key structure further includes a second support connected between the key cap and the bottom plate, wherein the first support includes a first abutting portion and a first abutting surface, the second support includes a second abutting portion and a second abutting surface, the first abutting portion continuously slides against the second abutting surface, and the second abutting portion continuously slides against the first abutting surface, so that the first support and the second support are driven to rotate with each other.

In one embodiment, the first abutting surface is a plane and faces the bottom plate.

In one embodiment, the second pushing portion is a curved surface or a sharp edge.

In one embodiment, the first abutting portion is in line contact with the second abutting surface, and the second abutting portion is in line contact with the first abutting surface.

In an embodiment, the first pivot structure further includes a third guiding groove and a third protruding shaft, the third guiding groove extends perpendicular to the first rotational axis and has a third opening and a third recess, the third recess is parallel to the first rotational axis and is recessed, the third protruding shaft is rotatably inserted into the third recess relative to the first rotational axis, the first guiding groove and the third guiding groove are disposed in one of the first bracket and the bottom plate, and the first protruding shaft and the third protruding shaft are disposed in the other of the first bracket and the bottom plate relative to the first guiding groove and the third guiding groove.

In an embodiment, the first protruding shaft and the third protruding shaft are located between the first guiding groove and the third guiding groove in the first rotation axis direction, and the first protruding shaft and the third protruding shaft are respectively formed by protruding from two cantilever plates located at two opposite sides of the first bracket. In one embodiment, the two cantilever plates extend obliquely towards the first guiding groove and the third guiding groove respectively. In an embodiment, the first guiding slot and the third guiding slot are located between the first protruding shaft and the third protruding shaft in the first rotation axis direction, and the first guiding slot and the third guiding slot are respectively formed by extending from two cantilever plates at two opposite sides of the first bracket.

In one embodiment, the key cap includes a cap body and a sliding groove disposed on the cap body, the cap body has a bottom surface facing the bottom plate, the sliding groove has a sliding surface opposite to the bottom surface, the first support includes a key cap abutting portion abutting against the bottom surface and a sliding portion sliding against the sliding surface. In an embodiment, the sliding portion is a cantilever structure, the sliding portion extends perpendicular to the first rotational axis, and a free end of the cantilever structure slides against the sliding surface. In an embodiment, the key cap includes a limiting block disposed on the cap body, the first bracket has a horizontal limiting groove, and the limiting block is inserted into the horizontal limiting groove in a relatively sliding manner.

therefore, in the key structure, the guide groove is beneficial to the convex shaft to be clamped into the concave part, and the structural deformation after assembly is effectively inhibited or avoided.

Another objective of the present invention is to provide a key structure, which is supported and actuated by the brackets, and the two brackets oppositely disposed have an extending structure extending into the lower portion of the other bracket, so that the two brackets can be linked with each other. The bracket is combined with the bottom plate by a structure of a clamping hook and a limiting column.

In order to achieve the above object, the present invention provides a key structure, comprising: bottom plate, key cap, first support and second support. The bottom plate comprises a first clamping hook, a first limiting column, a second clamping hook and a second limiting column; the keycap is arranged on the bottom plate; the first support comprises a first support body and a first abutting arm extending from the first support body, the first support body is connected between the keycap and the base plate through the first support body, the first support body is provided with a first base plate abutting part and a first limiting hole, the first base plate abutting part abuts against the base plate, the first support body can rotate relative to the base plate through the first base plate abutting part, the first clamping hook abuts against the first base plate abutting part, and the first limiting column extends into the first limiting hole; the second support comprises a second support body and a second abutting arm extending from the second support body, the second support body is connected between the keycap and the base plate through the second support body, the second support body is provided with a second base plate abutting portion and a second limiting hole, the second base plate abutting portion abuts against the base plate, the second support body can rotate relative to the base plate through the second base plate abutting portion, the second clamping hook hooks the second base plate abutting portion, the second limiting post extends into the second limiting hole, the first abutting arm is located between the second support body and the base plate and abuts against the second support body, and the second abutting arm is located between the first support body and the base plate and abuts against the first support body.

In one embodiment, the first base plate abutting portion is located at an end of the first frame body, the first abutting arm extends from the first base plate abutting portion, the second base plate abutting portion is located at an end of the second frame body, and the second abutting arm extends from the second base plate abutting portion. In one embodiment, the first frame body is in a n-shaped structure and has third bottom plate abutting portions abutting against the bottom plate, the first bottom plate abutting portions and the third bottom plate abutting portions are located at two ends of the n-shaped structure, the first frame body comprises third abutting arms extending from the third bottom plate abutting portions, the third abutting arms are located between the second frame body and the bottom plate, and the third abutting arms abut against the second frame body.

In one embodiment, the second frame body has a second n-shaped structure and has fourth bottom plate abutting portions abutting against the bottom plate, the second bottom plate abutting portions and the fourth bottom plate abutting portions are located at two ends of the second n-shaped structure, the second frame body includes fourth abutting arms extending from the fourth bottom plate abutting portions, the fourth abutting arms are located between the first frame body and the bottom plate, and the fourth abutting arms abut against the first frame body.

In one embodiment, the first and second supports are identical in structure. In one embodiment, the first and second U-shaped structures are staggered. In one embodiment, the bottom plate includes a third hook, and the third hook hooks the third bottom plate abutting portion. In one embodiment, the first bottom plate abutting portion has a through hole, and the first hook extends into the through hole. In one embodiment, the first hook has an opening direction, and the first position-limiting pillar is disposed on one side of the first hook in the opening direction. In one embodiment, the first position-limiting hole is located at the first bottom plate abutting portion, and the first hook extends into the first position-limiting hole. In an embodiment, the first hook has an opening direction, and the first position-limiting pillar is disposed on a side of the first hook opposite to the opening direction. In one embodiment, the bottom plate includes a metal plate and a plastic member embedded with the metal plate, and the plastic member forms the first hook, the first position-limiting post, the second hook and the second position-limiting post. In one embodiment, the key cap includes a cap body and a vertical position-limiting groove disposed on the cap body, the cap body has a bottom surface facing the bottom plate, the vertical position-limiting groove has a position-limiting surface opposite to the bottom surface, the first frame body includes a key cap abutting portion and a position-limiting portion, the key cap abutting portion abuts against the bottom surface, and when the key cap is not pressed, the position-limiting portion abuts against the position-limiting surface. In an embodiment, the key cap includes a limiting block disposed on the cap body, the first bracket has a horizontal limiting groove, and the limiting block is inserted into the horizontal limiting groove in a relatively sliding manner.

Therefore, the key structure of the invention can enable the first support and the second support to be mutually linked through the structural logics that the first support and the second abutting arm are mutually abutted and the second support and the first abutting arm are mutually abutted. And the connection of the first bracket and the second bracket with the bottom plate can be realized through the structural logic that the first clamping hook and the first limit column form structural restraint on the first bracket body and the second clamping hook and the second limit column form structural restraint on the second bracket body.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

Fig. 1 is a schematic diagram of a key structure according to an embodiment.

Fig. 2 is a partially exploded view of the key structure of fig. 1.

Fig. 3 is an exploded view of the key structure of fig. 1.

Fig. 4 is an exploded view of the first hinge structure shown in fig. 2.

Fig. 5 is a cross-sectional view of the first bracket, the bottom plate and the first pivot structure of fig. 2, the cross-sectional view being along the first rotation axis.

Fig. 6 is a cross-sectional view of the first bracket of fig. 5 according to another embodiment.

Fig. 7 is a cross-sectional view of the first hinge structure of fig. 5 according to another embodiment.

Fig. 8 is an exploded view of the first hinge structure of fig. 4 according to another embodiment.

Fig. 9 is an exploded view of the second pivot structure in fig. 2.

Fig. 10 is a cross-sectional view of the key structure of fig. 1 taken along line X-X.

Fig. 11 is a cross-sectional view of the key structure of fig. 10 when the key cap is pressed, wherein the elastic restoring member is not shown in the figure.

FIG. 12 is a schematic view of a first bracket according to another embodiment.

Fig. 13 is a schematic view of a first bracket according to another embodiment.

Fig. 14 is a schematic view of a first bracket according to another embodiment.

Fig. 15 is a cross-sectional view of the key structure of fig. 1 taken along line Y-Y.

FIG. 16 is a diagram illustrating a portion of a key structure according to an embodiment.

Fig. 17 is a schematic view of the first bracket of fig. 16.

Fig. 18 is a schematic view of the second bracket of fig. 16.

Fig. 19 is a side view of the first bracket and the second bracket of fig. 16.

Fig. 20 is a cross-sectional view taken along line U-U of fig. 16.

Fig. 21 is a cross-sectional view of the key structure of fig. 16 after being pressed.

FIG. 22 is a diagram illustrating a key structure according to another embodiment.

Fig. 23 is a partially exploded view of the key structure of fig. 22.

Fig. 24 is an exploded view of the key structure of fig. 22.

FIG. 25 is a cross-sectional view of the key structure of FIG. 22 taken along line Z-Z.

FIG. 26 is a cross-sectional view of the key structure of FIG. 22 taken along line W-W.

Fig. 27 is a cross-sectional view of the key structure of fig. 22 taken along line V-V.

FIG. 28 is an exploded view of a key structure according to another embodiment.

Detailed Description

Please refer to fig. 1 to 3. The key structure 1 according to an embodiment includes a base plate 10, a key cap 12, a first support 14, a second support 16, a first pivot structure 18 (shown in fig. 2 by a dotted circle), a second pivot structure 20 (shown in fig. 2 by a dotted circle), a switch circuit board 22, and an elastic restoring element 24. The keycap 12 is disposed on the base plate 10, and the first support 14 and the second support 16 are connected between the keycap 12 and the base plate 10. Wherein the first frame 14 is connected to the base plate 10 via the first pivot structure 18, such that the first frame 14 can rotate around a first rotation axis a1 (shown in fig. 2 by a dotted line) relative to the base plate 10; the first support 14 has opposite sides 14a, 14b with respect to a first rotational axis a1, the first support 14 being connected to the key cap 12 with one side 14a and engaging the second support 16 with the other side 14 b. The second frame 16 is connected to the base plate 10 via a second pivot structure 20, such that the second frame 16 can rotate around a second rotation axis a2 (shown in dashed lines in fig. 2) relative to the base plate 10; the second support 16 has opposite sides 16a, 16b with respect to a second rotational axis a2, the second support 16 being connected to the keycap 12 on one side 16a and engaging the first support 14 on the other side 16b, the first rotational axis a1 being parallel to the second rotational axis a 2. The switch circuit board 22 is disposed on the base plate 10 and includes a switch 222 (shown as a hatched circle in fig. 3). The elastic reset piece 24 is placed on the switch circuit board 22 corresponding to the switch 222. Thus, the key cap 12 can move parallel to the vertical direction D1 (or up and down vertical movement) relative to the base plate 10 via the first support 14 and the second support 16, and the downward moving key cap 12 can press the elastic restoring member 24 to trigger the switch 222. In practical operation, the switch circuit board 22 may be, but is not limited to, a conventional thin film circuit board, and the details of the structure thereof are not described herein; to simplify the drawing, the switch circuit board 22 is still shown as a single entity. The resilient return 24 may be, but is not limited to, silicone or rubber knobs.

Please refer to fig. 4 and 5. The first pivot structure 18 includes a first guiding slot 182, a first protruding shaft 184, a third guiding slot 186 and a third protruding shaft 188. The first guide groove 182 extends perpendicularly to the first rotational axial direction a1 and has a first opening 1822 and a first recess 1824, the first recess 1824 being recessed parallel to the first rotational axial direction a 1; the first shaft 184 is rotatably captured in the first recess 1824 relative to the first rotational axis a 1. The third guide slot 186 extends perpendicularly to the first rotational axis direction a1 and has a third opening 1862 and a third recess 1864, the third recess 1864 being recessed parallel to the first rotational axis direction a 1; the third protruding axle 188 is rotatably snapped into the third recess 1864 relative to the first rotational axial direction a 1. In the present embodiment, the first guiding slot 182 and the third guiding slot 186 are disposed on the bottom plate 10, and the first protruding shaft 184 and the third protruding shaft 188 are correspondingly disposed on the first bracket 14. Accordingly, the first frame 14 is pivotally connected to the base plate 10 via the first pivot structure 18, and is rotatable around the first rotation axis a1 relative to the base plate 10.

In addition, in the embodiment, the first guiding slot 182 and the third guiding slot 186 both extend parallel to the vertical direction D1, and the first opening 1822 and the third opening 1862 are located at the upward ends of the first guiding slot 182 and the third guiding slot 186. When the first bracket 14 is assembled to the base plate 10, the first protruding shaft 184 and the third protruding shaft 188 can enter the first guiding groove 182 and the third guiding groove 186 through the first opening 1822 and the third opening 1862, respectively. Then, the first bracket 14 is pressed downward, so that the first protruding shaft 184 and the third protruding shaft 188 continuously slide downward in the first guiding groove 182 and the third guiding groove 186 until the first protruding shaft 184 and the third protruding shaft 188 are clamped into the first concave portion 1824 and the third concave portion 1864. At this time, the pivotal connection between the first frame 14 and the base plate 10 is completed.

In addition, in the present embodiment, the first guiding groove 182 and the third guiding groove 186 are respectively formed by the plate portions 102 and 104 extending upward from the bottom plate 10, specifically, the first guiding groove 182 is formed by a first cantilever plate extending upward from the bottom plate 10, in other words, the first guiding groove 182 and the third guiding groove 186 are integrally formed with the bottom plate 10 (for example, but not limited to, by stamping and forming a metal plate). In practice, the first recess 1824 and the third recess 1864 are respectively a through hole (or a recess in practice) located at, but not limited to, the ends (or closed ends) of the first guiding groove 182 and the third guiding groove 186. The plate portions 102 and 104 are cantilever plates, which are basically elastic, so that the first protruding shaft 184 and the third protruding shaft 188 (guided by the first guiding groove 182 and the third guiding groove 186) can be elastically clamped into the first concave portion 1824 and the third concave portion 1864, and the first guiding groove 182 and the third guiding groove 186 can still keep elastic contact with the first protruding shaft 184 and the third protruding shaft 188. The first protruding shaft 184 and the third protruding shaft 188 are formed by protruding from the cantilever plates 142 and 144 at two opposite sides of the first bracket 14, respectively, and specifically, the first protruding shaft 184 is formed by protruding from the second cantilever plate 142 of the first bracket 14. The cantilever plates 142, 144 are cantilevered and in principle also resilient, which also facilitates the aforementioned resilient snap-in and resilient contact.

In addition, in the embodiment, the first protruding shaft 184 and the third protruding shaft 188 are located between the first guiding groove 182 and the third guiding groove 186 on the first rotating axial direction a1, the first protruding shaft 184 and the third protruding shaft 188 are respectively formed by protruding outwards from the cantilever plates 142 and 144 on the two opposite sides of the first bracket 14, and the first bracket 14, the first protruding shaft 184 and the third protruding shaft 188 are in a U-shaped structure in a cross section (as shown in fig. 5) passing through the first rotating axial direction a1, which is beneficial for the above-mentioned elastic snapping and elastic contact. For example, the width of the bottom of the U-shaped structure may be designed to be slightly smaller than the distance between the plate portions 102, 104 (or the distance between the first guiding groove 182 and the third guiding groove 186), which facilitates the aforementioned snapping operation. In addition, in practical applications, before the first protruding shaft 184 and the third protruding shaft 188 are engaged into the first concave 1824 and the third concave 1864, the cantilever plates 142, 144 may be designed to extend obliquely toward the first guiding slot 182 and the third guiding slot 186 (i.e., extend obliquely toward the outside, as shown in fig. 6), i.e., have a U-shaped structure with an enlarged opening (similar to a trapezoid structure with a larger upper base than a lower base), which can increase the elastic contact force. On the other hand, this structure design can provide a tolerance range that is larger, and also facilitates the assembly of the first bracket 14 to the base plate 10. In addition, in practical applications, the first pivot structure 18 may also be configured as a U-shaped structure with an enlarged opening, as shown in fig. 7. In addition, after the first protruding shaft 184 and the third protruding shaft 188 are engaged into the first concave portion 1824 and the third concave portion 1864, the first concave portion 1824 and the third concave portion 1864 can generate a structural constraint effect on the first protruding shaft 184 and the third protruding shaft 188 in principle, so that the first protruding shaft 184 and the third protruding shaft 188 are not limited to elastically contact with the first concave portion 1824 and the third concave portion 1864 in actual operation.

In addition, in the embodiment, the first guiding slot 182 and the third guiding slot 186 are disposed on the bottom plate 10, and the first protruding shaft 184 and the third protruding shaft 188 are disposed on the first bracket 10, but the invention is not limited thereto in practical operation. For example, as shown in fig. 8, the first guiding slot 182 and the third guiding slot 186 are disposed on the first bracket 10, and the first protruding shaft 184 and the third protruding shaft 188 are correspondingly disposed on the bottom plate 10. The first guiding groove 182 and the third guiding groove 186 are located between the first protruding shaft 184 and the third protruding shaft 188 on the first rotation axis a 1. In addition, in practice, the first protruding shaft 184 and the third protruding shaft 188 can be implemented by plastic instead and combined with the bottom plate 10 by insert injection. This structure can also achieve the engagement between the first protruding shaft 184 and the third protruding shaft 188 and the first guiding groove 182 and the third guiding groove 186 as described above, and will not be described herein.

Please refer to fig. 1 to 3 and fig. 9. The second pivot structure 18 includes a second guiding slot 202, a second protruding shaft 204, a fourth guiding slot 206 and a fourth protruding shaft 208. The second guide groove 202 extends perpendicularly to the second rotational axial direction a2 and has a second opening 2022 and a second recess 2024, the second recess 2024 being recessed parallel to the second rotational axial direction a 2; the second shaft 204 is rotatably engaged in the second recess 2024 with respect to the second rotational axial direction a 2. The fourth guide groove 206 extends perpendicularly to the second axis of rotation a2 and has a fourth opening 2062 and a fourth recess 2064, the fourth recess 2064 being recessed parallel to the second axis of rotation a 2; the fourth shaft 208 is rotatably captured in the fourth recess 2064 relative to the second rotational axis A2. In the present embodiment, the second guiding groove 202 and the fourth guiding groove 206 are disposed on the bottom plate 10, and the second protruding shaft 204 and the fourth protruding shaft 208 are correspondingly disposed on the second bracket 16. Accordingly, the second bracket 16 is pivotally connected to the base plate 10 via the second pivot structure 20, and is rotatable around the second rotation axis a2 relative to the base plate 10.

In this embodiment, the second guiding groove 202 and the fourth guiding groove 206 have the same structure as the first guiding groove 182 and the third guiding groove 186, so other descriptions of the second guiding groove 202 and the fourth guiding groove 206 can refer to the first guiding groove 182 and the third guiding groove 186 directly and related descriptions of variations thereof, which are not repeated herein. In addition, in the present embodiment, the first guiding groove 182 and the second guiding groove 202 are the same in structure and are formed by the same plate portion 102 extending upward from the bottom plate 10, and the third guiding groove 186 and the fourth guiding groove 206 are also the same in structure and are formed by the other same plate portion 104 extending upward from the bottom plate 10; however, the method is not limited to this. For example, the first guide groove 182 is disposed on the first bracket 10 (as shown in fig. 8), and the second guide groove 202 is disposed on the base plate 10; the first protruding shaft 184 (disposed on the bottom plate 10) and the second guiding groove 202 can be formed by the same plate portion 102 extending upward from the bottom plate 10.

Please refer to fig. 2 to 4 and fig. 9 to 11. The first bracket 14 includes a first engaging portion 146 and a first engaging piece 148, and the first engaging portion 146 and the first engaging piece 148 are disposed at an interval in the first rotational axis direction a 1. The second bracket 16 includes a second engaging portion 162 and a second engaging piece 164, and the second engaging portion 162 and the second engaging piece 164 are spaced apart from each other in the second rotational axis direction a 2. The first engaging portion 146 is disposed opposite to the second engaging piece 164. The first engaging piece 148 is disposed opposite to the second engaging portion 162. The first engaging piece 148 is engaged with the second engaging portion 162 and the second engaging piece 164 is engaged with the first engaging portion 146, so that the first bracket 14 and the second bracket 16 are driven to rotate relative to each other. In the present embodiment, the first engaging portion 146 and the second engaging portion 162 are both plate-shaped structures with slots and respectively extending perpendicular to the first engaging piece 148 and the second engaging piece 164 (or perpendicular to the first rotating axial direction a1 and the second rotating axial direction a2), and the first engaging piece 148 and the second engaging piece 164 are engaged in the slots to realize the mutual driving rotation of the first bracket 14 and the second bracket 16. However, the method is not limited to this. For example, the first engaging portion 146 can be implemented by a plurality of plate structures bent upward or downward relative to the first rotational axis a1, the bent plate structures being staggered along the first rotational axis a1 to engage with the second engaging portion 164 (i.e. the second engaging portion 164 is captured between the upward and downward bent plate structures from the perspective of the first rotational axis a 1). This applies to the second engaging portion 162, which is not described in detail.

In addition, in the present embodiment, the first engaging portion 146 has a first position-limiting portion 146a (e.g., an upper edge of the first engaging portion 146), and the second engaging portion 162 has a second position-limiting portion 162a (e.g., an upper edge of the second engaging portion 162). When the key cap 12 is at the pressed position (as shown in fig. 11), the first position-limiting portion 146a and the second position-limiting portion 162a abut against the cap 122. In practical operation, the structures of the first position-limiting portion 146a and the second position-limiting portion 162a can be designed to increase the stability of the first position-limiting portion 146a and the second position-limiting portion 162a in stopping the keycap 12, for example, the upper edges of the first engaging portion 146 and the second position-limiting portion 162a are horizontal when the keycap 12 is located at the pressed position, so as to increase the contact position between the first engaging portion 146 and the cap 122 and the second position-limiting portion 162 a.

Please refer to fig. 2, fig. 4, fig. 10 and fig. 11. The key cap 12 includes a cap body 122 and two first sliding grooves 124 disposed on the cap body 122, the cap body 122 has a bottom surface 122a facing the base plate 10, and the first sliding grooves 124 have sliding surfaces 124a opposite to the bottom surface 122 a. The first support 14 includes a first key cap abutting portion 150 and two first sliding portions 152, and the two first sliding portions 152 are respectively located at two sides of the first key cap abutting portion 150. The first keycap abutting parts 150 abut against the bottom surface 122a, and each first sliding part 152 correspondingly slides against the sliding surface 124a of each first sliding chute 124; thereby, the first support 14 can slide and rotate relative to the keycap 12. In the view of the first rotation axis a1, the first rotation axis a1 (or the first protruding shaft 184) is located between the first key cap abutting portion 150 (or the first sliding portion 152) and the first engaging portion 146 (or the first engaging piece 148). In addition, in the present embodiment, the first key cap abutting portion 150 is a semi-cylindrical surface, and the semi-cylindrical surface slides against the bottom surface 122 a. The sliding portion 152 is a cantilever structure extending perpendicularly to the first rotational axial direction a1, and a free end of the cantilever structure has a semicircular convex surface and slides against the corresponding sliding surface 124a with the semicircular convex surface. As shown in fig. 10 and 11, from the perspective of the first rotation axis a1, the semi-cylindrical surface of the first key cap abutting portion 150 and the semi-circular protruding surface of the sliding portion 152 may form a substantially circular shape (shown by the dashed circle in fig. 10), so that the first key cap abutting portion 150 and the first sliding portion 152 can provide stable rotation of the first frame 14 relative to the key cap 12. In addition, the first sliding portion 152 in the cantilever structure also has elasticity, which helps the first key cap abutting portion 150 and the first sliding portion 152 to respectively abut against the bottom surface 122a and the sliding surface 124a when the key cap 12 moves relative to the base plate 10.

In addition, in practical operation, the first key cap abutting portion 150 and the first sliding portion 152 can also be implemented by other structures. For example, the first support 15a shown in fig. 12 has two upward protrusions 150a as the structure of the first key cap abutting portion 150, and two downward bent portions 152a as the structure of the first sliding portion 152; thereby, the first support 15a is connected to the key cap 12 through the protrusion 150a and the bending portion 152 a. In practice, the protrusion 150a may also be formed by bending a portion of the first frame 15a upwards. In addition, in practical operation, the first key cap abutting portion 150 and the two first sliding portions 152 can also be structurally integrated. For example, the first bracket 15b shown in fig. 13 includes two cantilever structures 153 and the two cantilever structures 153 are located on opposite sides of the first bracket 15 b. The two cantilever structures 153 are slidably and rotatably disposed in the first sliding slot 124 (refer to fig. 2). The free end of the cantilever structure 153 is in a circular plate shape, and the lower surface 153a thereof is configured as the first sliding portion 152, and the upper surface 153b thereof is configured as the first key cap abutting portion 150. For another example, as shown in fig. 14, the first support 15c includes two pillars 152b (e.g., formed by rolling a part of the first support 15 c) extending outward from the first key cap abutting portion 150, and is slidably and rotatably disposed in the first sliding slot 124 (see fig. 2) to serve as a structure of the first sliding portion 152. In addition, in the embodiment, the first support 14 has an n-shaped structure with a downward opening and an increasing opening at the two first sliding portions 152 (see fig. 5), which is also beneficial for the combination of the first support 14 and the keycap 12, and is not described in detail.

Please refer to fig. 2, fig. 4, fig. 10, fig. 11 and fig. 15. In this embodiment, the keycap 12 includes two first limiting blocks 126 disposed on the cap body 122, the first support 14 has two first horizontal limiting grooves 154, and the two first horizontal limiting grooves 154 respectively correspond to the two first limiting blocks 126. The first limit blocks 126 are relatively slidably inserted into the corresponding first horizontal limit grooves 154, so that when the first support 14 horizontally slides relative to the keycap 12, the first limit blocks 126 relatively slide in the first horizontal limit grooves 154. In practical applications, the length of the first horizontal limiting groove 154 can be designed such that (the closed end of) the first horizontal limiting groove 154 can stop the first limiting block 126 to control the pressed position of the keycap 12.

Please refer to fig. 2, 9 to 11, and 15. In the embodiment, the key cap 12 includes two second sliding grooves 128 and two second stoppers 130 disposed on the cap body 122, and the second sliding grooves 128 have sliding surfaces 128a opposite to the bottom surface 122 a. The second frame 16 includes a second key cap abutting portion 166, two second sliding portions 168 and two second horizontal limiting grooves 170, wherein the two second sliding portions 168 are respectively located at two sides of the second key cap abutting portion 166. The second key cap abutting portion 166 abuts against the bottom surface 122a, and the two second sliding portions 168 respectively and correspondingly slide against the sliding surfaces 128a of the two second sliding grooves 128; therefore, the second support 16 can slide and rotate relative to the keycap 12, and the second limiting block 130 is inserted into the corresponding second horizontal limiting groove 170 in a relatively sliding manner, so that when the second support 16 slides horizontally relative to the keycap 12, the second limiting block 130 slides in the second horizontal limiting groove 170 relatively. For other descriptions of the connection structure between the second frame 16 and the key cap 12 and the variations thereof, please refer to the related descriptions of the same name structure of the first frame 14 and the variations thereof, which are not repeated herein.

In addition, in the embodiment, the first support 14 has an n-shaped structure, the first engaging portion 146 and the first engaging piece 148 are located at two ends of the n-shaped structure, the second support 16 also has an n-shaped structure, and the second engaging portion 162 and the second engaging piece 164 are located at two ends of the n-shaped structure. The first bracket 14 is coupled to the second bracket 16 to form a square-shaped structure through which the elastic restoring member 20 passes. The first bracket 14 and the second bracket 16 are identical in structure, which is beneficial for reducing the manufacturing cost, but not limited to this in practical operation. For example, both ends of the first bracket 14 are the first engaging portions 146, and correspondingly both ends of the second bracket 16 are the second engaging pieces 164. In addition, in practical applications, the connection between the first bracket 14 and the second bracket 16 can also be realized only by the engagement of the first engaging portion 146 and the second engaging piece 164, or the engagement of the first engaging piece 148 and the second engaging portion 162.

In the present embodiment, the first bracket 14 and the second bracket 16 are connected by the engaging pieces 148 and 164 and the engaging portions 146 and 162, but the present invention is not limited thereto in actual operation. Referring to fig. 16 to 21, a partial structure of a key structure according to another embodiment is shown. The key structure is similar to the key structure 1, and for simplifying the description, the reference numerals of the key structure 1 and its variations are used in principle, so that please refer to the related description of the key structure 1 and its variations for other descriptions of the key structure of this embodiment, which is not repeated herein. In the present embodiment, the first and second supports 74 and 76 are connected between the keycap 12 (shown in dotted outline in fig. 19 to 21) and the base 10, so that the keycap 12 can move vertically up and down relative to the base 10 via the first and second supports 74 and 76. The first bracket 74 and the second bracket 76 are engaged with each other to be capable of driving rotation with each other. The first bracket 74 includes a first abutting portion 742 and a first abutting surface 744, and the second bracket 76 includes a second abutting portion 762 and a second abutting surface 764. The first abutting portion 742 continuously slides against the second abutting surface 764 and the second abutting portion 762 continuously slides against the first abutting surface 744, so that the first bracket 74 and the second bracket 76 can be driven to rotate with each other; that is, when the first support 74 and the second support 76 rotate relative to the base 10, the first abutting portion 742 can abut against the second abutting surface 764 and the second abutting portion 762 can abut against the first abutting surface 744, so that when the key cap 12 moves up and down relative to the base 10, the first support 74 and the second support 76 can abut against each other and can stably drive and rotate with each other.

In addition, in the embodiment, the first abutting portion 742 is located below the second abutting surface 764, the second abutting portion 762 is located below the first abutting surface 744, the first abutting surface 744 and the second abutting surface 764 are both planar surfaces facing the bottom plate 10, and the first abutting portion 742 and the second abutting portion 762 are arc surfaces. However, the method is not limited to this. For example, the first and second pushing portions 742 and 762 can be sharp edges (e.g., plate edges); for example, the first and second abutment surfaces 744, 764 may be curved surfaces. In the present embodiment, the first abutting portion 742 is in line contact with the second abutting surface 764, and the second abutting portion 762 is in line contact with the first abutting surface 744. In addition, in the embodiment, the first abutting surface 744 and the second abutting surface 764 have the same structure, and the first abutting portion 742 and the second abutting portion 762 have the same structure, but the invention is not limited thereto in practical operation. In addition, in the embodiment, the first support 74 and the second support 76 are substantially n-shaped and are connected to each other at two sides (i.e. two ends of the n-shaped structure are connected to each other). The above description only describes the connection structure on one side, and the connection structure on the other side is the same, which is not repeated; however, in practical applications, the connection structures on both sides are not limited to be the same. In practice, the first bracket 74 and the second bracket 76 are only connected at one side, and the mutual driving and rotating effects can be achieved. In addition, in the embodiment, the first bracket 74 and the second bracket 76 are both metal stamping parts, but the practical operation is not limited thereto; for example, the first and second brackets 74, 76 may be formed by injection molding.

Please refer to fig. 22 to 25. The key structure 3 according to another embodiment comprises a bottom plate 30, a key cap 32, a first support 34, a second support 36, a switch circuit board 38 and an elastic resetting member 40. The key cap 32 is disposed over the base plate 30. The first support 34 and the second support 36 are alternately disposed between the keycap 12 and the base plate 10. The switch circuit board 38 is disposed below the backplane 30 and includes a switch 382 (shown in phantom in fig. 24). The elastic reset piece 40 is placed above the switch circuit board 38 corresponding to the switch 382. Thus, the key cap 32 can move up and down relative to the base plate 30 via the first and second supports 34 and 36, and the downward movement of the key cap 32 can press the elastic restoring member 40 to trigger the switch 382. In practical operation, the switch circuit board 38 may be, but is not limited to, a conventional thin film circuit board, and the details of the structure thereof are not described herein; to simplify the drawing, the switch circuit board 38 is still shown as a single entity. Elastic restoring member 40 may be, but is not limited to, a silicone or rubber dome.

In the embodiment, the base plate 30 includes a plate 300, and a first hook 302, a second hook 304, a third hook 306, a fourth hook 308, a first position-limiting pillar 310 and a second position-limiting pillar 312 disposed on the plate 300. In practical operation, the first hook 302, the second hook 304, the third hook 306, the fourth hook 308, the first position-limiting post 310 and the second position-limiting post 312 may be structurally integrated into a plastic part and combined with the plate 300; for example, but not limited to, the plate body 300 is a metal stamping, and the plastic member is combined with the plate body 300 by injection molding. The key cap 32 is disposed on the bottom plate 30 and includes a cap body 320, and two first vertical position-limiting grooves 322, two second vertical position-limiting grooves 324, two first position-limiting blocks 326 and two second position-limiting blocks 328 disposed on the cap body 320. The cap body 320 has a bottom surface 320a facing the base plate 10, and the first vertical limiting groove 322 and the second vertical limiting groove 324 have limiting surfaces 322a, 324a opposite to the bottom surface 320 a.

The first frame 34 includes a first frame 340 and a first abutting arm 342 and a third abutting arm 344 extending from the first frame 340, and the first frame 34 is connected between the key cap 32 and the base 30 by the first frame 340. The first frame 340 has a first key cap abutting portion 3402, two first limiting portions 3404, a first bottom plate abutting portion 3406, a third bottom plate abutting portion 3408, a first limiting hole 3410, and two first horizontal limiting grooves 3412. The first key cap leaning part 3402 leans against the bottom surface 320a, and the two first limiting parts 3404 are correspondingly arranged in the two first vertical limiting grooves 322. When the key cap 32 is not pressed (as shown in fig. 25), the first stopper 3404 abuts against the stopper surface 322 a. The first and third bottom plate abutting portions 3406 and 3408 abut against the bottom plate 30 so that the first frame 340 is rotatable relative to the bottom plate 30 via the first and third bottom plate abutting portions 3406 and 3408. The first hook 302 and the third hook 306 hook the first bottom plate leaning part 3406 and the third bottom plate leaning part 3408, respectively. The first positioning post 310 extends into the first positioning hole 3410, and the first frame 340 is restrained by the structure therebetween to improve the stability of the rotation relative to the base 30. The two first stoppers 326 are correspondingly inserted into the two first horizontal stopper grooves 3412 in a relatively sliding manner, such that when the first bracket 34 slides horizontally relative to the key cap 32, each first stopper 326 slides relatively into the corresponding first horizontal stopper groove 3412. In practice, the length of the first horizontal stopper 3412 may be designed such that the (closed end of the) first horizontal stopper 3412 can stop the first stopper 326 to control the pressed position of the key cap 32. In addition, the first frame 340 is of a first n-shaped structure, the first bottom plate abutting portion 3406 and the third bottom plate abutting portion 3408 are located at two ends of the first n-shaped structure, and the first keycap abutting portion 3402 and the first bottom plate abutting portion 3406 (and the third bottom plate abutting portion 3408) are located at two opposite sides of the first frame 340. First abutment arm 342 extends from first floor abutment 3406 and third abutment arm 344 extends from third floor abutment 3408.

The second frame 36 includes a second frame 360 and a second abutting arm 362 and a fourth abutting arm 364 extending from the second frame 360, and the second frame 36 is connected between the key cap 32 and the bottom plate 30 by the second frame 360. The second frame 360 has a second key cap abutting portion 3602, two second limiting portions 3604, a second bottom plate abutting portion 3606, a fourth bottom plate abutting portion 3608, a second limiting hole 3610 and two second horizontal limiting grooves 3612. The second key cap abutting portion 3602 abuts against the bottom surface 320a, and the two second limiting portions 3604 are disposed corresponding to the two second vertical limiting grooves 324. When the key cap 32 is not pressed (as shown in fig. 25), the second stopper 3604 abuts against the stopper surface 324 a. The second floor abutting portion 3606 and the fourth floor abutting portion 3608 abut against the floor 30, so that the second frame 360 can rotate relative to the floor 30 through the second floor abutting portion 3606 and the fourth floor abutting portion 3608. The second hook 304 and the fourth hook 308 hook the second bottom plate abutting part 3606 and the fourth bottom plate abutting part 3608 correspondingly. The second position-limiting pillar 312 extends into the second position-limiting hole 3610, and the rotation stability of the second frame 360 relative to the base plate 30 is enhanced by the structural constraint therebetween. The two second stoppers 328 are correspondingly inserted into the two second horizontal stopper grooves 3612 in a relatively sliding manner, so that when the second bracket 36 slides horizontally relative to the key cap 32, each second stopper 328 slides relatively into the corresponding second horizontal stopper groove 3612. In practical applications, the length of the second horizontal position-limiting groove 3612 can be designed such that (the closed end of) the second horizontal position-limiting groove 3612 can block the second position-limiting block 328, so as to control the pressed position of the key cap 32. In addition, the second frame 360 has a second n-shaped structure, the second bottom plate abutting portion 3606 and the fourth bottom plate abutting portion 3608 are located at two ends of the second n-shaped structure, and the second key cap abutting portion 3602 and the second bottom plate abutting portion 3606 (and the fourth bottom plate abutting portion 3608) are located at two opposite sides of the second frame 360. The second abutment arm 362 extends from the second floor abutment 3606 and the fourth abutment arm 364 extends from the fourth floor abutment 3608.

Please refer to fig. 26 and 27. The first abutting arm 342 and the third abutting arm 344 are located between the second frame 360 and the bottom plate 30 and abut against the second frame 360, wherein the portion of the first abutting arm 342 and the third abutting arm 344 abutting against the second frame 360 is located between the second key cap abutting portion 3602 and the second bottom plate abutting portion 3606 (and the fourth bottom plate abutting portion 3608). Thus, when the second frame 360 is rotated toward the bottom plate 30, the second frame 360 presses the first contact arm 342 and the third contact arm 344 downward, so that the first frame 340 is rotated toward the bottom plate 30; when the first frame 340 is rotated away from the base 30, the first and third engaging arms 342 and 344 lift the second frame 360, so that the second frame 360 is rotated away from the base 30. Also, the second abutting arm 362 and the fourth abutting arm 364 are located between the first frame 340 and the base 30 and abut against the first frame 340, wherein the portion of the second abutting arm 362 and the fourth abutting arm 364 abutting against the first frame 340 is located between the first key cap abutting portion 3402 and the first base abutting portion 3406 (and the third base abutting portion 3408). Thus, when the first frame 340 rotates toward the bottom plate 30, the first frame 340 presses down the second contact arm 362 and the fourth contact arm 364, so that the second frame 360 rotates toward the bottom plate 30; when the second frame 360 is rotated away from the base 30, the second abutting arm 362 and the fourth abutting arm 364 lift the first frame 340, so that the first frame 340 is rotated away from the base 30. On the other hand, the first bracket 34 and the second bracket 36 are driven to rotate by the first contact arm 342, the second contact arm 362, the third contact arm 344, and the fourth contact arm 364.

In addition, in the embodiment, the first support 34 and the second support 36 are both n-shaped, and are disposed in a staggered manner and connected to form a square-shaped structure, through which the elastic restoring member 40 passes. The first bracket 34 and the second bracket 36 have the same structure, which is beneficial for reducing the manufacturing cost, but not limited to this in practical operation. In principle, the first bracket 34 can be linked to the second bracket 36 by one of the first contact arm 342 and the third contact arm 344, and similarly, the second bracket 36 can be linked to the first bracket 34 by one of the second contact arm 362 and the fourth contact arm 364.

In addition, referring to fig. 22 to 24, in the present embodiment, the first bottom plate abutting portion 3406 has a first through hole 3406a, the third bottom plate abutting portion 3408 has a third through hole 3408a, and the first hook 302 and the third hook 306 correspondingly extend into the first through hole 3406a and the third through hole 3408a and hook the first bottom plate abutting portion 3406 and the third bottom plate abutting portion 3408 by hooking the edges of the first through hole 3406a and the third through hole 3408 a. The second bottom plate abutting part 3606 is provided with a second through hole 3606a, the fourth bottom plate abutting part 3608 is provided with a fourth through hole 3608a, the second hook 304 and the fourth hook 308 correspondingly extend into the second through hole 3606a and the fourth through hole 3608a, and the second bottom plate abutting part 3606 and the fourth bottom plate abutting part 3608 are hooked by hooking hole edges of the second through hole 3606a and the fourth through hole 3608 a. However, the method is not limited to this. For example, the first hook 302 and the third hook 306 directly hook the outer edge of the first bottom plate abutting portion 3406 (or hook the notch structure formed therein); the second hook 304 and the fourth hook 308 are the same, and are not described in detail.

In addition, in the embodiment, the first hook 302 has an opening direction 302a, and the first position-limiting pillar 310 is disposed on one side of the first hook 302 in the opening direction 302 a; the second hook 304 is the same, and will not be described herein. In practice, the first through hole 3406a may also be structurally integrated with the first stopper hole 3410. As shown in fig. 28, the key structure 5 according to an embodiment has substantially the same structure as the key structure 3, so the key structure 5 follows the reference numerals of the key structure 3, and other descriptions of the key structure 5 and its variations are not repeated herein, please refer to the related descriptions of the key structure 3 directly. In the key structure 5, the bottom plate 50 includes a first hook 502, a second hook 504, a third hook 506, a fourth hook 508, a first position-limiting post 510, a second position-limiting post 512, a third position-limiting post 514 and a fourth position-limiting post 516, wherein the first position-limiting post 510, the second position-limiting post 512, the third position-limiting post 514 and the fourth position-limiting post 516 are correspondingly disposed adjacent to the first hook 502, the second hook 504, the third hook 506 and the fourth hook 508; the first hook 502 has an opening direction 502a, and the first position-limiting post 510 is disposed on a side of the first hook 502 opposite to the opening direction 502 a; other structural configurations are also the same and are not described in detail.

In addition, the first bracket 54 of the key structure 5 includes a first limiting hole 5410 and a third limiting hole 5411, which are correspondingly formed on the first bottom plate abutting portion 3406 and the third bottom plate abutting portion 3408. The first hook 502 and the first position-limiting post 510 extend into the first position-limiting hole 5410, and the third hook 506 and the third position-limiting post 514 extend into the third position-limiting hole 5411. The second bracket 56 of the key structure 5 includes a second position-limiting hole 5610 and a fourth position-limiting hole 5611, which are formed on the second bottom plate abutting portion 3606 and the fourth bottom plate abutting portion 3608. The second hook 504 and the second position-limiting post 512 extend into the second position-limiting hole 5610, and the fourth hook 508 and the fourth position-limiting post 516 extend into the fourth position-limiting hole 5611.

In addition, in the key structure 1, the connection structures of the first support 14 and the second support 16 with the key cap 12 can also be applied to the key structure 3, which is not described herein; similarly, the connection structure between the first support 34 and the second support 36 and the key cap 32 can also be applied to the key structure 1, and is not further described.

The above detailed description of the preferred embodiments is intended to more clearly illustrate the features and spirit of the present invention, and is not intended to limit the scope of the present invention by the preferred embodiments disclosed above. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims. The scope of the invention is therefore to be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is within the scope of the appended claims.

Claims (37)

1. A key structure, comprising:

A base plate;

The keycap is arranged on the bottom plate;

A first support coupled to the keycap; and

A first pivot structure, the first bracket being connected to the base plate via the first pivot structure such that the first bracket is rotatable about a first rotational axis relative to the base plate, the first pivot structure comprising:

A first guide groove extending perpendicular to the first rotational axis and having a first opening and a first recess, the first recess being recessed parallel to the first rotational axis, the first guide groove being disposed in one of the first bracket and the base plate; and

The first protruding shaft is rotatably clamped in the first concave part relative to the first rotating axial direction, and the first protruding shaft is arranged on the other one of the first bracket and the bottom plate relative to the first guide groove.

2. The key structure according to claim 1, wherein: the keycap moves parallel to the vertical direction relative to the base plate through the first support, and the first guide groove extends parallel to the vertical direction.

3. The key structure according to claim 1, wherein: the first guide groove is arranged on the bottom plate, and the first protruding shaft is arranged on the first support.

4. The key structure according to claim 3, wherein: the first guide groove is formed by a first cantilever plate extending upwards from the bottom plate.

5. The key structure according to claim 3, wherein: the first protruding shaft is formed by protruding from the second cantilever plate of the first bracket.

6. The key structure according to claim 5, wherein: the second cantilever plate extends towards the first guide groove in an inclined mode.

7. The key structure according to claim 1, wherein: the first recess is a through hole.

8. the key structure according to claim 1, wherein: the key structure further comprises a second support, the second support is connected between the keycap and the bottom plate, the first support comprises one of a clamping portion and a clamping sheet, the second support comprises the other of the clamping portion and the clamping sheet, and the clamping sheet is clamped into the clamping portion, so that the first support and the second support are driven to rotate mutually.

9. The key structure according to claim 8, wherein: the key structure further includes a second pivot structure, wherein the second bracket is connected to the base plate via the second pivot structure, such that the second bracket can rotate around a second rotational axis relative to the base plate, the first rotational axis is parallel to the second rotational axis, the second pivot structure includes a second guide groove and a second protruding shaft, the second guide groove extends perpendicular to the second rotational axis and has a second opening and a second recess, the second recess is parallel to the second rotational axis, the second guide groove is disposed in one of the second bracket and the base plate, the second protruding shaft is rotatably inserted into the second recess relative to the second rotational axis, and the second protruding shaft is disposed in the other of the second bracket and the base plate relative to the second guide groove.

10. The key structure according to claim 9, wherein: the first guide groove and the second guide groove are formed by plate parts extending upwards from the bottom plate, the first protruding shaft is arranged on the first support, and the second protruding shaft is arranged on the second support.

11. the key structure according to claim 8, wherein: the first support is provided with two opposite sides relative to the first rotating axial direction, one side of the first support is connected to the keycap, and the other side of the first support and the second support are mutually driven to rotate.

12. The key structure according to claim 1, wherein: the key structure further comprises a second support, the second support is connected between the keycap and the bottom plate, the first support comprises a first clamping portion and a first clamping sheet, the first clamping portion and the first clamping sheet are arranged in the upward direction of the first rotating shaft at intervals, the second support comprises a second clamping portion and a second clamping sheet, the second clamping portion and the second clamping sheet are arranged in the upward direction of the second rotating shaft at intervals, the first clamping sheet is clamped into the second clamping portion, and the second clamping sheet is clamped into the first clamping portion, so that the first support and the second support are driven to rotate mutually.

13. The key structure according to claim 1, wherein: the key structure further comprises a second support, the second support is connected between the keycap and the bottom plate, the first support comprises a first abutting portion and a first abutting surface, the second support comprises a second abutting portion and a second abutting surface, the first abutting portion continuously slides to abut against the second abutting surface, the second abutting portion continuously slides to abut against the first abutting surface, and therefore the first support and the second support are driven to rotate mutually.

14. the key structure according to claim 13, wherein: the first abutting surface is a plane and faces the bottom plate.

15. The key structure according to claim 14, wherein: the second pushing part is a cambered surface or a sharp edge.

16. The key structure according to claim 13, wherein: the first abutting part is in line contact with the second abutting surface, and the second abutting part is in line contact with the first abutting surface.

17. The key structure according to claim 1, wherein: the first pivot structure further includes a third guiding groove and a third protruding shaft, the third guiding groove extends perpendicular to the first rotational axis and has a third opening and a third recess, the third recess is parallel to the first rotational axis and is recessed, the third protruding shaft is rotatably clamped into the third recess relative to the first rotational axis, the first guiding groove and the third guiding groove are disposed in one of the first bracket and the bottom plate, and the first protruding shaft and the third protruding shaft are disposed in the other of the first bracket and the bottom plate relative to the first guiding groove and the third guiding groove.

18. The key structure of claim 17, wherein: the first protruding shaft and the third protruding shaft are located between the first guiding groove and the third guiding groove in the first rotating shaft direction, and the first protruding shaft and the third protruding shaft are formed by protruding from two cantilever plates located on two opposite sides of the first support in the lateral direction respectively.

19. The key structure of claim 18, wherein: the two cantilever plates extend towards the first guide groove and the third guide groove in an inclined mode respectively.

20. The key structure of claim 17, wherein: the first guide groove and the third guide groove are located between the first protruding shaft and the third protruding shaft in the first rotating shaft direction, and the first guide groove and the third guide groove are formed by extending from two cantilever plates on two opposite sides of the first support respectively.

21. The key structure according to claim 1, wherein: the first support comprises a keycap abutting portion and a sliding portion, the keycap abutting portion abuts against the bottom surface, and the sliding portion abuts against the sliding surface in a sliding mode.

22. The key structure of claim 21, wherein: the sliding part is of a cantilever structure, the sliding part extends perpendicular to the first rotating shaft, and the free end of the cantilever structure is in sliding support against the sliding surface.

23. The key structure of claim 21, wherein: the keycap comprises a limiting block arranged on the cap body, the first support is provided with a horizontal limiting groove, and the limiting block is inserted into the horizontal limiting groove in a relatively sliding manner.

24. a key structure, comprising:

The bottom plate comprises a first clamping hook, a first limiting column, a second clamping hook and a second limiting column;

The keycap is arranged on the bottom plate;

The first support comprises a first support body and a first abutting arm extending from the first support body, the first support body is connected between the keycap and the base plate through the first support body, the first support body is provided with a first base plate abutting part and a first limiting hole, the first base plate abutting part abuts against the base plate, the first support body can rotate relative to the base plate through the first base plate abutting part, the first clamping hook abuts against the first base plate abutting part, and the first limiting column extends into the first limiting hole; and

the second support comprises a second support body and a second abutting arm extending from the second support body, the second support body is connected between the keycap and the bottom plate through the second support body, the second support body is provided with a second bottom plate abutting portion and a second limiting hole, the second bottom plate abutting portion abuts against the bottom plate, the second support body can rotate relative to the bottom plate through the second bottom plate abutting portion, the second clamping hook hooks the second bottom plate abutting portion, the second limiting post extends into the second limiting hole, the first abutting arm is located between the second support body and the bottom plate and abuts against the second support body, and the second abutting arm is located between the first support body and the bottom plate and abuts against the first support body.

25. The key structure of claim 24, wherein: the first base plate abutting portion is located at the end portion of the first frame body, the first abutting arm extends from the first base plate abutting portion, the second base plate abutting portion is located at the end portion of the second frame body, and the second abutting arm extends from the second base plate abutting portion.

26. the key structure of claim 25, wherein: the first frame body is in a reverse U-shaped structure and is provided with third bottom plate abutting parts abutting against the bottom plate, the first bottom plate abutting parts and the third bottom plate abutting parts are positioned at two ends of the reverse U-shaped structure, the first frame body comprises third abutting arms, the third abutting arms extend from the third bottom plate abutting parts, the third abutting arms are positioned between the second frame body and the bottom plate, and the third abutting arms abut against the second frame body.

27. The key structure of claim 26, wherein: the second frame body is in a structure of the shape of the reverse U and is provided with a fourth bottom plate abutting part abutting against the bottom plate, the second bottom plate abutting part and the fourth bottom plate abutting part are positioned at two ends of the structure of the shape of the reverse U, the second support comprises a fourth abutting arm, the fourth abutting arm extends from the fourth bottom plate abutting part, the fourth abutting arm is positioned between the first frame body and the bottom plate, and the fourth abutting arm abuts against the first frame body.

28. The key structure of claim 27, wherein: the first bracket and the second bracket have the same structure.

29. The key structure of claim 27, wherein: the first n-shaped structure and the second n-shaped structure are arranged in a staggered manner.

30. The key structure of claim 26, wherein: the bottom plate comprises a third clamping hook which is hooked with the third bottom plate abutting part.

31. The key structure of claim 24, wherein: the first bottom plate leaning part is provided with a through hole, and the first clamping hook extends into the through hole.

32. The key structure of claim 31, wherein: the first hook has an opening direction, and the first limiting column is arranged on one side of the first hook in the opening direction.

33. The key structure of claim 24, wherein: the first limiting hole is located in the first bottom plate abutting portion, and the first clamping hook extends into the first limiting hole.

34. The key structure of claim 33, wherein: the first hook has an opening direction, and the first limiting column is arranged on one side of the first hook opposite to the opening direction.

35. The key structure of claim 24, wherein: the bottom plate comprises a metal plate body and a plastic piece which is mutually embedded with the metal plate body, and the plastic piece forms the first clamping hook, the first limiting column, the second clamping hook and the second limiting column.

36. The key structure of claim 24, wherein: the first frame body comprises a keycap abutting part and a limiting part, the keycap abutting part abuts against the bottom surface, and when the keycap is not pressed, the limiting part abuts against the limiting surface.

37. The key structure of claim 36, wherein: the keycap comprises a limiting block arranged on the cap body, the first support is provided with a horizontal limiting groove, and the limiting block is inserted into the horizontal limiting groove in a relatively sliding manner.