TWM626767U - Keyboard device - Google Patents

Abstract

The present utility model discloses a keyboard device including a key structure. The key structure includes a key bottom plate, a key cap, a plurality of first hooks, at least one stabilizer bar, and at least one first reinforcing bar. The key cap includes an outer surface and an inner surface opposite to each other, and the inner surface faces to the key bottom plate. The first hooks are disposed on the inner surface of the key cap. Each first hook includes a first wall, a second wall, and a third wall that are spaced apart from each other, a first through hole is defined in between the first wall and the second wall, and a second through hole is defined between the second wall and the third wall. The stabilizer bar includes a transverse bar part and two hook parts respectively located at two ends of the transverse bar part. The transverse bar part is pivotally connected to the first through hole, and the hook parts are connected to the key bottom plate. The first reinforcing bar penetrates through the second through hole.

Description

keyboard device

The present invention relates to the field of input devices, in particular to a keyboard device.

With the rapid development of science and technology, the vigorous development of electronic equipment has brought a lot of convenience to human life. Therefore, how to make the operation of electronic equipment more humane is an important issue. Common input devices of electronic equipment include a mouse device, a keyboard device, and a trackball device, among which the keyboard device allows users to directly input characters and symbols to the computer, and thus has received considerable attention.

First, the structure and function of the conventional keyboard device will be described. Please refer to FIG. 1 to FIG. 3 . FIG. 1 is a schematic diagram of the appearance structure of the conventional keyboard device. Schematic diagram, FIG. 3 is an exploded perspective view of a part of the structure of the keyboard device shown in FIG. 1 from another perspective. For a clearer illustration, only a single key structure 10' and related element structures are depicted in FIG. 2 and FIG. 3 . The conventional keyboard device 1 includes a plurality of key structures 10 and 10 ′, a key base plate 11 and a thin film circuit board 12 , and the thin film circuit board 12 has a plurality of membrane switches 121 corresponding to the plurality of key structures 10 and 10 ′. The structures 10 and 10' include a keycap 101, a scissor-type connecting element 102 and an elastic body 103; wherein, the scissor-type connecting element 102 is connected between the keycap 101 and the key bottom plate 11, and includes a first frame 1021 and a first frame 1021 pivotally connected to the first frame 102. A second frame 1022 of a frame 1021, so the first frame 1021 and the second frame 1022 can swing relative to each other, and the elastic body 103 is disposed between the key cap 101 and the key bottom plate 11, and has an abutting top 1031.

When the key cap 101 of any one of the key structures 10 and 10 ′ is pressed and moves downward relative to the key base plate 11 , the first frame 1021 and the second frame 1022 of the scissor-type connecting element 102 will change from the open and closed state to the overlapping state. The keycap 101 moving downward will squeeze the elastic body 103, so that the abutting top 1031 of the elastic body 103 abuts and triggers the corresponding membrane switch 121, so that the keyboard device 1 generates a corresponding key signal. When the keys 10 and 10 ′ are no longer pressed, the key cap 101 will move upward relative to the key base plate 11 according to the elastic force of the elastic body 103 . At this time, the first frame 1021 and the second frame 1022 will be overlapped by The state is changed to the open and closed state, and the keycap 101 will return to its original position.

Furthermore, some key structures 10 ′, such as keys with a length L1 greater than a width W1 , further include two balance bars 104 , and each balance bar 104 includes a cross bar portion 1041 and two bars located at two ends of the cross bar portion 1041 respectively. Hook 1042. In addition, the key base 11 includes a first base connecting portion 111 and a second base connecting portion 112 extending upward and passing through the film circuit board 12, and the first base connecting portion 111 has two first hook holes 1111, and the second base The connecting portion 112 has two second hook holes 1121 corresponding to the two first hook holes 1111 respectively. Wherein, the cross bar portion 1041 of each balance bar 104 is pivotally connected to the key cap 101 of the key structure 10 ′, and the two hook portions 1042 of each balance bar 104 respectively pass through the first hooks of the first bottom plate connecting portion 111 . The hole 1111 and the second hook hole 1121 of the second bottom plate connecting portion 112 .

Please refer to FIG. 4 , which is a schematic action diagram of the balance bar of the keyboard device shown in FIG. 1 . When the key cap 101 of the key structure 10 ′ moves up or down relative to the key base plate 11 , the balance bar 104 will move in the direction D11 or D12 and turn over in the direction D13 or D14 . The purpose of this design is to make the The key structure 10 ′ can maintain a balance without tilting when moving up or down relative to the key base plate 11 , and can also increase the strength of the key cap 101 .

However, although the strength of the keycap 101 can be increased through the arrangement of the two balance bars 104 and the key structure 10 ′ can be kept balanced without tilting when moving, the key structure 10 ′ with weak material strength or a longer length L1 For example, in the case where only two balance bars 104 are provided, the problem of poor corner driving performance of the key structure 10 ′ or insufficient strength of the key cap 101 will still occur. Therefore, how to improve the above problems is actually as follows: The focus of attention of those in the field.

One of the objectives of the present invention is to provide a keyboard device, the key structure of which has better structural rigidity and the better corner driving performance of the keycap in the process of lifting and moving.

Other purposes and advantages of the present creation can be further understood from the technical features disclosed in the present creation.

In order to achieve one or part or all of the above purposes or other purposes, the present invention provides a keyboard device including a key structure. The key structure includes a key base plate, a key cap, a plurality of first hooks, at least one balance rod and at least one first reinforcing rod. The keycap includes an outer surface and an inner surface opposite to each other, and the inner surface faces the key bottom plate. The first hooks are disposed on the inner surface of the keycap, and each first hook includes a first wall, a second wall and a third wall that are spaced apart from each other, and the second wall is located between the first wall and the third wall. A first through hole is defined between the three walls and between the first wall and the second wall, and a second through hole is defined between the second wall and the third wall. The balance bar includes a horizontal bar portion and two hook portions respectively located at both ends of the horizontal bar portion. The horizontal bar portion is pivotally connected to the first through hole of each first hook, and the hook portions are connected to the key bottom plate. The first reinforcing rod is penetrated through the second penetration hole of each of the first hooks.

In an embodiment of the present invention, the first hooks located on opposite sides of the above-mentioned first hooks further include ribs, the ribs are connected between the second wall and the third wall, and the second wall The body and the third wall are located between the rib and the inner surface of the keycap, and the second wall, the third wall and the rib define a second through hole.

In an embodiment of the present invention, the first hooks located on opposite sides of the above-mentioned first hooks further include a blocking wall, the blocking wall is connected between the second wall and the third wall, and blocks The wall is located below the rib, and the second wall body, the third wall body, the rib and the blocking wall define a second through hole.

In an embodiment of the present invention, the above-mentioned key structure further includes a first connecting component and a second connecting component, the first connecting component and the second connecting component are both disposed between the key cap and the key bottom plate, and the first connecting component on one side of the second connection assembly.

In an embodiment of the present invention, the above-mentioned first connection component has a first side surface and a second side surface opposite to each other, the second connection component has a third side surface and a fourth side surface opposite to each other, and the second connection component of the first connection component has a second side surface opposite to each other. The side surface and the third side surface of the second connection component are opposite to each other, and there is a distance between the first side surface of the first connection component and the fourth side surface of the second connection component, and the keycap is connected by the first connection component and the second connection component. The bottom plate moves up and down relative to the key plate along the direction of the first axis, and the first reinforcing rod extends along the direction of the second axis perpendicular to the first axis and has an extension length, and the extension length is greater than the spacing.

In an embodiment of the present invention, the above-mentioned key structure further includes a second reinforcing rod, the keycap further includes a plurality of second hooks, each of the second hooks has a third through hole, and the second reinforcing rod is passed through The third through hole of each second hook, and the second reinforcing rod is located between the first connecting element and the second connecting element.

In an embodiment of the present invention, the above-mentioned keycap further includes at least one first groove, at least one second groove and at least one third groove, the first groove, the second groove and the third groove They are all opened on the inner surface, and the first groove communicates with the first through hole of each first hook, the second groove communicates with the second through hole of each first hook, and the third groove communicates with the second through hole of each first hook. The third through holes of each second hook are connected, the first groove is used for accommodating the balance rod, the second groove is used for accommodating the first reinforcing rod, and the third groove is used for accommodating the second reinforcing rod rod.

In an embodiment of the present invention, the first reinforcing bar and the cross bar portion of the balance bar are parallel to each other, and the first reinforcing bar is located between the cross bar portion of the balance bar and the second reinforcing bar.

In an embodiment of the present invention, the above-mentioned first reinforcing bar and the cross bar of the balance bar are parallel to each other, and the cross bar of the balance bar is located between the first reinforcing bar and the second reinforcing bar.

In an embodiment of the present invention, the above-mentioned key structure further includes a thin film circuit board, the thin film circuit board is disposed between the key cap and the key bottom plate, and the thin film circuit board is used for being triggered by the key structure to output the key signal.

In the keyboard device of this creative embodiment, in addition to the balance bar connected between the key cap and the key base plate, the key structure of the keyboard device additionally adds a first reinforcing bar on one side of the balance bar, so that the structure of the periphery of the key cap and the four corners is The strength is greatly improved, and with the second reinforcing rod connected to the center of the keycap and corresponding to the two connecting components, the structural strength of the center of the keycap is also greatly improved. Therefore, when the user presses the At any position, the keycap can move up and down relative to the key bottom plate stably, and there will be no problem of poor driveability at the corner of the keycap or other positions. In addition, the first hook disposed on the keycap also has a structural design of a first through hole and a second through hole. When the balance rod and the first reinforcement rod are respectively inserted through the first through hole and the second through hole When the hole is connected to the keycap, the arrangement positions between the balance rod and the first reinforcement rod can be concentrated, and the arrangement space of the balance rod and the first reinforcement rod can be effectively reduced.

In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments are exemplified below, and are described in detail as follows in conjunction with the accompanying drawings.

Please refer to FIG. 5 to FIG. 11 . FIG. 5 is a schematic diagram of an appearance structure of a keyboard device according to an embodiment of the invention. FIG. 6 is a schematic three-dimensional structural diagram of the key structure of the keyboard device shown in FIG. 5 . FIG. 7 is an exploded schematic diagram of the key structure of the keyboard device shown in FIG. 6 . FIG. 8 is a schematic bottom view of some components shown in FIG. 7 after being combined. FIG. 9 is a schematic cross-sectional view along the line AA shown in FIG. 6 . FIG. 10 is a schematic cross-sectional view along the line BB shown in FIG. 6 . FIG. 11 is a schematic structural diagram of the first hooks located in areas A and B shown in FIG. 8 .

As shown in FIG. 5 , the keyboard device 2 of this embodiment includes a plurality of key structures 20 and 20'. These key structures 20 ′ can be classified into general keys, numeric keys, function keys, etc., which are respectively used by the user to touch and press the keyboard device 2 to generate corresponding key signals to the computer, thereby enabling the computer to perform corresponding functions. , for example, the general keys are used to input symbols such as English letters, the number keys are used to input numbers, and the function keys are used to provide various shortcut functions, such as F1~F12, etc., and the key structure 20 is larger in area and longer in length Multiple keys such as the space key (Space) or the shift (Shift) key.

In the following description of the embodiments, the key structure 20 of the keyboard device 2 will be used as an example for description, and for a clearer illustration, the following drawings only depict a single key structure 20 and related component structures.

As shown in FIGS. 6 to 11 , the key structure 20 of this embodiment includes a key base plate 201 , a key cap 202 , a plurality of first hooks 203 , 203 a , at least one balance bar 204 and at least one first reinforcing bar 205 . The keycap 202 includes an outer surface 2021 and an inner surface 2022 opposite to each other, the keycap 202 is disposed above the key base 201 , and the inner surface 2022 of the key cap 202 faces the key base 201 . The first hooks 203, 203a are disposed on the inner surface 2022 of the keycap 202, and each of the first hooks 203, 203a includes a first wall 2031, a second wall 2032 and a third wall 2033 spaced apart from each other , the second wall 2032 is located between the first wall 2031 and the third wall 2033, and a first through hole H1 is defined between the first wall 2031 and the second wall 2032, and the second wall 2032 and A second through hole H2 is defined between the third walls 2033 . The balance bar 204 includes a cross bar portion 2041 and two hook portions 2042 respectively located at both ends of the cross bar portion 2041 . The balance bar 204 is pivotally connected to the first through holes H1 of each of the first hooks 203 and 203 a by the cross bar portion 2041 . While connected to the key cap 202 , the balance bar 204 is connected to the key base plate 201 through the hooks 2042 . The first reinforcing rod 205 passes through the second through hole H2 of each of the first hooks 203 and 203a and is connected to the keycap 202 .

It should be noted that, in this embodiment, the number of the balance rods 204 is, for example, two, and the number of the first reinforcement rods 205 is, for example, two, but the invention does not limit the balance rods 204 and the first reinforcement rods 205 quantity. The two balance rods 204 are located on the upper and lower sides of the keycap 202 respectively, and the two first reinforcing rods 205 are respectively disposed on one side of the balance rod 204 located on the upper and lower sides. Furthermore, the first hooks 203 and 203a are evenly distributed on the upper and lower sides of the inner surface 2022 of the keycap 202 for the balance rod 204 and the first reinforcing rod 205 located on the upper and lower sides of the keycap 202 to pass through.

As shown in FIG. 6 to FIG. 10 , the key structure 20 of this embodiment further includes a first connecting component 206 and a second connecting component 207 . The first connection element 206 and the second connection element 207 are both disposed between the key cap 202 and the key base plate 201, and the first connection element 206 is located on one side of the second connection element 207, that is, the first connection element 206 and The second connecting components 207 are located on opposite left and right sides, respectively. The key cap 202 is moved up and down relative to the key base plate 201 by the first connecting element 206 and the second connecting element 207 . In this embodiment, the first connecting component 206 and the second connecting component 207 are, for example, scissor-type connecting components, but the invention is not limited to this. In other embodiments, the first connecting component 206 and the second connecting component are connected The assembly 207 is, for example, a butterfly-connected assembly.

As shown in FIGS. 6 to 9 , the key structure 20 of this embodiment further includes a thin film circuit board 208 . The thin film circuit board 208 is disposed between the key cap 202 and the key bottom plate 201 . In this embodiment, the thin film circuit board 208 has a plurality of through regions 2080 , and the present invention does not limit the number of the through regions 2080 . The first connecting member 206 and the second connecting member 207 are respectively connected between the key cap 202 and the key base plate 201 through the corresponding through regions 2080 . Specifically, a membrane switch (not shown) is disposed on the membrane circuit board 208 . When the key cap 202 moves downward relative to the key base plate 201 through the first connecting component 206 and the second connecting component 207 , the membrane switch is disposed on the bottom plate 201 . The elastic element (not shown) in the keycap 202 is deformed to trigger the membrane switch located on the membrane circuit board 208, and correspondingly output a key signal.

As shown in FIG. 7 and FIG. 8 , the first connecting component 206 of this embodiment has a first side surface 2061 and a second side surface 2062 opposite to each other, and the second connecting component 207 has a third side surface 2071 and a fourth side surface 2072 opposite to each other. The second side 2062 of the first connecting element 206 and the third side 2071 of the second connecting element 207 are opposite to each other, that is, the second side 2062 and the third side 2071 are located between the first side 2061 and the fourth side 2072 , and there is a distance G between the first side surface 2061 of the first connecting element 206 and the fourth side surface 2072 of the second connecting element 207 . In this embodiment, the keycap 202 is moved up and down relative to the key base plate 201 along the direction of the first axis A1 through the first connecting component 206 and the second connecting component 207 , and the first reinforcing rod 205 is moved along the second axis The first axis A1 and the second axis A2 are perpendicular to each other, and the extension length L of the first reinforcing rod 205 is greater than the distance between the first connecting element 206 and the second connecting element 207 G. Under such a structural design, the first reinforcing rods 205 located on the upper and lower sides can indeed extend to the four corners of the keycap 202, so that the structural strength of the periphery and the four corners of the keycap 202 is greatly improved, thereby making the keycap 202 stronger. The cap 202 moves up and down relative to the key bottom plate stably, which effectively solves the problem that the corners of the key cap 202 have poor driveability.

As shown in FIG. 6 to FIG. 9 and FIG. 11 , among the first hooks 203 of the present embodiment, the first hooks 203 a located on opposite sides respectively are located in the area A and the area B as shown in FIG. 8 . The structure of the first hook 203a is slightly different from that of the other first hooks 203. The first hook 203a located in the area A and the area B has a first wall 2031, a second wall 2032 and a third wall. Besides 2033, there are ribs 2034 and a blocking wall 2035. As shown in FIG. 11 , the rib 2034 of the first hook 203 a is connected between the second wall 2032 and the third wall 2033 , and the second wall 2032 and the third wall 2033 are located between the rib 2034 and the keycap 202 . between inner surfaces 2022. The baffle wall 2035 is connected between the second wall body 2032 and the third wall body 2033, and the baffle wall 2035 is located below the rib 2034, that is, the second hole of the first hook 203a located in the area A and the area B. The setting hole H2 is mainly defined by the second wall body 2032 , the third wall body 2033 , the ribs 2034 and the blocking wall 2035 .

In view of the above, when the first reinforcing rod 205 is penetrated through the second piercing hole H2 of each of the first hooks 203 and 203a and is connected to the keycap 202, the opposite ends of the first reinforcing rod 205 are respectively penetrated. The first hooks 203a located in the area A and the area B, so that the two ends of the first reinforcing rod 205 are supported by the ribs 2034 and blocked by the blocking wall 2035, so as to prevent the first reinforcing rod 205 from facing the keycap 202. The key base plate 201 falls off from the first hooks 203 and 203a during the lifting movement.

As shown in FIGS. 7 , 8 and 10 , the key structure 20 of this embodiment further includes a second reinforcing rod 209 , and the key cap 202 further includes a plurality of second hooks 210 . Each of the second hooks 210 has a third through hole H3, and the second reinforcing rod 209 is passed through the third through hole H3 of each of the second hooks 210 to be connected to the keycap 202. The hooks 210 are distributed between the first connecting element 206 and the second connecting element 207 , so when the second reinforcing rod 208 is connected to the keycap 202 by the second hooks 210 , the second reinforcing rod 209 is also the same It is located between the first connecting component 206 and the second connecting component 207 . In this embodiment, the second reinforcing rod 209 is, for example, bent into a U-shaped configuration. When the second reinforcing rod 209 is connected to the keycap 202 through the second hooks 210 , the second The reinforcing rod 209 can enhance the structural strength of the central region portion of the keycap 202 .

It should be noted that, in this embodiment, the first reinforcing rod 205 and the cross bar portion 2041 of the balance bar 204 are parallel to each other, and the first reinforcing bar 205 is located at the cross bar portion 2041 of the balance bar 204 and the second reinforcing bar 209 In other words, the first reinforcing rod 205 is disposed on the inner side of the balance rod 204, but the present invention is not limited to this. In other embodiments, the first reinforcing rod 205 can also be disposed on the outside of the That is, the cross bar portion 2041 of the balance bar 204 is located between the first reinforcing bar 205 and the second reinforcing bar 209 .

As shown in FIGS. 7 to 11 , the keycap 202 of this embodiment further includes at least one first groove G1 , at least one second groove G2 and at least one third groove G3 . In this embodiment, the number of the first grooves G1 and the second grooves G2 is, for example, two, and the number of the third grooves G3 is, for example, one, but the present invention is not limited thereto. The first grooves G1 , the second grooves G2 and the third grooves G3 are all opened on the inner surface 2022 of the keycap 202 , and the first grooves G1 and the first grooves of each of the first hooks 203 and 203 a The through holes H1 are communicated with each other, the second grooves G2 are communicated with the second through holes H2 of each of the first hooks 203 and 203a, and the third grooves G3 are communicated with the third through holes H3 of the second hooks 210. , and the configuration of the third groove G3 matches the U-shaped configuration of the second reinforcing rod 209 . In this embodiment, the first grooves G1 are used for accommodating the balance rods 204 , the second grooves G2 are used for accommodating the first reinforcing rods 205 , and the third grooves G3 are used for accommodating the second reinforcing rods The rod 209 can greatly reduce the overall thickness of the key structure 20 under such a structural design.

To sum up, in the keyboard device of the present invention, in addition to the balance bar connected between the key cap and the key bottom plate, the key structure of the keyboard device of the present invention additionally adds a first reinforcing bar on one side of the balance bar, so that the peripheral edge of the key cap and the The structural strength of the four corners is greatly improved, and with the second reinforcing rod connected to the center of the keycap and corresponding to the two connecting components, the structural strength of the center of the keycap is also greatly improved, so when the user When pressing any position on the key cap, the key cap can move up and down relative to the key bottom plate stably, and there will be no problem of poor driveability at the corner of the key cap or other positions. In addition, the first hook disposed on the keycap also has a structural design of a first through hole and a second through hole. When the balance rod and the first reinforcement rod are respectively inserted through the first through hole and the second through hole When the hole is connected to the keycap, the arrangement positions between the balance rod and the first reinforcement rod can be concentrated, and the arrangement space of the balance rod and the first reinforcement rod can be effectively reduced.

However, the above are only the preferred embodiments of this creation, and should not limit the scope of implementation of this creation, that is, any simple equivalent changes and modifications made according to the scope of the patent application for this creation and the contents of the description of the creation, All are still within the scope of this creative patent. In addition, any embodiment of the present invention or the scope of the patent application is not required to achieve all the purposes or advantages or features disclosed in the present invention. In addition, the abstract section and the title are only used to aid the search of patent documents and are not intended to limit the scope of rights of this creation. In addition, terms such as "first" and "second" mentioned in this specification or the scope of the patent application are only used to name the elements or to distinguish different embodiments or scopes, and are not used to limit the number of elements. upper or lower limit.

1, 2: Keyboard device 10, 10', 20, 20': key structure 11, 201: Button bottom plate 12, 208: Thin film circuit board 101, 202: keycaps 102: Scissor connection element 103: Elastomers 104, 204: balance bar 111: The first base plate connecting part 112: Second base plate connecting part 121: Membrane switch 1021: First Frame 1022: Second Frame 1031: to the top 1041, 2041: Crossbar 1042, 2042: Hook 1111: The first hook hole 1121: Second hook hole 203, 203a: The first hook 205: The first reinforcement bar 206: First connection component 207: Second connection component 209: Second Reinforcement Bar 210: Second hook 2021: External Surfaces 2022: Interior Surface 2031: First Wall 2032: Second Wall 2033: Third Wall 2034: Ribs 2035: Retaining Wall 2061: First Side 2062: Second Side 2071: Third Side 2072: Fourth Side 2080: Through the area A, B: area A1: The first axis A2: Second axis D11, D12, D13, D14: Direction G: Spacing G1: first groove G2: Second groove G3: Third groove H1: The first through hole H2: Second through hole H3: The third through hole L: extension length L1: length W1: width

FIG. 1 is a schematic diagram of the appearance structure of a conventional keyboard device. FIG. 2 is an exploded perspective view of a part of the structure of the keyboard device shown in FIG. 1 from a perspective. FIG. 3 is an exploded perspective view of a part of the structure of the keyboard device shown in FIG. 1 from another perspective. FIG. 4 is a schematic diagram of the operation of the balance bar of the keyboard device shown in FIG. 1 . FIG. 5 is a schematic diagram of an appearance structure of a keyboard device according to an embodiment of the invention. FIG. 6 is a schematic three-dimensional structural diagram of the key structure of the keyboard device shown in FIG. 5 . FIG. 7 is an exploded schematic diagram of the key structure of the keyboard device shown in FIG. 6 . FIG. 8 is a schematic bottom view of some components shown in FIG. 7 after being combined. FIG. 9 is a schematic cross-sectional view along the line AA shown in FIG. 6 . FIG. 10 is a schematic cross-sectional view along the line BB shown in FIG. 6 . FIG. 11 is a schematic structural diagram of the first hooks located in areas A and B shown in FIG. 8 .

202: keycaps

203, 203a: The first hook

204: Balance bar

205: The first reinforcement bar

206: First connection component

207: Second connection component

209: Second Reinforcement Bar

210: Second hook

2022: Interior Surface

2031: First Wall

2032: Second Wall

2033: Third Wall

2034: Ribs

2041: Crossbar

2042: Hook

2061: First Side

2062: Second Side

2071: Third Side

2072: Fourth Side

A, B: area

A1: The first axis

A2: Second axis

G: Spacing

G1: first groove

G2: Second groove

G3: Third groove

H1: The first through hole

H2: Second through hole

H3: The third through hole

L: extension length

Claims (10)

A keyboard device comprising: A key structure, including: A key base plate; a keycap, comprising an outer surface and an inner surface opposite to each other, the inner surface facing the key bottom plate; A plurality of first hooks are arranged on the inner surface of the keycap, each first hook includes a first wall, a second wall and a third wall arranged at intervals from each other, the second wall The body is located between the first wall body and the third wall body, and a first through hole is defined between the first wall body and the second wall body, and the second wall body and the third wall body A second through hole is defined between; At least one balance bar includes a cross bar portion and two hook portions located at both ends of the cross bar portion, the cross bar portion is pivotally connected to the first through hole of each first hook, and the hook portions are connected to the key pad; and At least one first reinforcing rod passes through the second through hole of each first hook. The keyboard device of claim 1, wherein the first hooks located on opposite sides of the first hooks further comprise a rib, and the rib is connected between the second wall and the third wall and the second wall and the third wall are located between the rib and the inner surface of the keycap, the second wall, the third wall and the rib define the second through hole . The keyboard device of claim 2, wherein the first hooks on the opposite sides of the first hooks further comprise a blocking wall, and the blocking wall is connected to the second wall and the third wall The second wall body, the third wall body, the rib and the blocking wall define the second through hole. The keyboard device of claim 1, wherein the key structure further comprises a first connecting element and a second connecting element, the first connecting element and the second connecting element are both disposed between the key cap and the key base plate and the first connecting element is located on one side of the second connecting element. The keyboard device of claim 4, wherein the first connecting element has a first side and a second side opposite to each other, the second connecting element has a third side and a fourth side that are opposite to each other, the The second side surface of the first connection element and the third side surface of the second connection element are opposite to each other, and there is a distance between the first side surface of the first connection element and the fourth side surface of the second connection element , the keycap is moved up and down relative to the key base plate along a direction of a first axis through the first connecting component and the second connecting component, and the at least one first reinforcing rod is along a direction perpendicular to the first axis A direction of the second axis extends to have an extension length, and the extension length is greater than the distance. The keyboard device of claim 4, wherein the key structure further comprises a second reinforcing rod, the keycap further comprises a plurality of second hooks, each second hook has a third through hole, the first Two reinforcing rods pass through the third penetration hole of each second hook, and the second reinforcing rod is located between the first connecting element and the second connecting element. The keyboard device of claim 6, wherein the keycap further comprises at least one first groove, at least one second groove and at least one third groove, the at least one first groove, the at least one second groove The groove and the at least one third groove are both opened on the inner surface, and the at least one first groove is communicated with the first through hole of each first hook, and the at least one second groove is connected with each The second through hole of a first hook is communicated with, the at least one third groove is communicated with the third through hole of each second hook, and the at least one first groove is used to accommodate the At least one balance rod, the at least one second groove is used for accommodating the at least one first reinforcement rod, and the at least one third groove is used for accommodating the second reinforcement rod. The keyboard device as claimed in claim 6, wherein the at least one first reinforcing bar and the cross bar portion of the at least one balance bar are parallel to each other, and the at least one first reinforcing bar is located at the cross bar of the at least one balance bar part and the second reinforcing rod. The keyboard device of claim 6, wherein the at least one first reinforcing bar and the cross bar portion of the at least one balance bar are parallel to each other, and the cross bar portion of the at least one balance bar is located at the at least one first reinforcing bar between the rod and the second reinforcing rod. The keyboard device of claim 1, wherein the key structure further comprises a thin film circuit board, the thin film circuit board is disposed between the key cap and the key bottom plate, and the thin film circuit board is used for being triggered by the key structure to output One button signal.

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