TWI619136B - Key switch structure - Google Patents

Abstract

The utility model relates to a button structure, comprising a bottom plate, a key cap, a satellite shaft module and a balance bar, wherein the key cap is movably disposed above the bottom plate, the satellite axis module comprises two fixing brackets and two movable brackets, the two The fixing brackets are respectively fixed on the bottom plate, and the two fixing brackets respectively have a limiting structure and an accommodating space, wherein the lower ends of the two movable brackets are respectively movably received in the accommodating space, and the upper ends of the two movable brackets are respectively connected to The keycap is connected to the two fixing brackets and the two movable brackets. When the key cap moves up and down, the balance bar drives the two movable brackets to move up and down synchronously. When a user wants to remove the keycap, each of the limiting structures respectively limits the corresponding movable bracket from being unable to escape from the accommodating space.

Description

Button structure

The invention relates to a button structure, in particular to a mechanical button structure applied to a multiple key on a keyboard.

Conventional mechanical keyboard multiple keys (such as blank key, Enter key, Caps Lock, Shift, etc.) button structure has a satellite axis module, satellite axis module By connecting the balance bar and the key cap, the key cap can be balanced with the balance bar by the satellite shaft module during the pressing process. When the operator wants to adjust or verify the mechanical button structure, the keycap must be removed from the satellite axis module. However, in the process of disassembling the keycap from the satellite axis module, the satellite axis module is often driven by the keycap to be separated from the bottom plate, and even if the force is too large during disassembly, the satellite shaft module is sprayed from the bottom plate, which causes The multiple key button structure of the conventional mechanical keyboard is inconvenient in adjustment or function verification.

Accordingly, the present invention provides a mechanical button structure to solve the above problems.

In order to achieve the above object, the present invention discloses a button structure including a bottom plate, a keycap, a satellite shaft module, a switch body, and a balance bar. The key cap is movably disposed above the bottom plate, and the key cap has a first long side of the keycap, a first side edge portion and a second side edge portion, the first side edge portion and the second side edge portion are respectively adjacent to opposite ends of the long axis of the keycap, the satellite axis The module includes two fixing brackets and two movable brackets, and the two fixing brackets are fixed on the bottom plate and respectively correspond to the first side edge portion and the second side edge portion, and the two fixing brackets each have a limiting structure and An accommodating space, the lower ends of the two movable brackets are respectively movably received in the accommodating space of the two fixing brackets, and the upper ends of the two movable brackets are respectively connected to the first side portion and the second portion of the keycap a side portion, the switch body is disposed on the bottom plate and located between the two fixing brackets, the balance bar has a middle rod body and two interlocking rod bodies, the middle rod body is substantially parallel to the long axis of the key cap, the middle portion The rod body is pivotally connected to the two fixing brackets, Linkage rod member having a substantially symmetrical shape, the root Eren movable rod connected to the middle section of each rod opposite ends, the tail portion of Eren movable rod connected to the second movable bracket. Wherein, when the keycap moves up and down relative to the bottom plate, the balance bar substantially rotates relative to the bottom plate with the middle rod as a fulcrum, and the two linked rod tails drive the two movable brackets to move up and down synchronously, so that The two movable supports are kept at substantially the same height. When the user wants to remove the keycap, each of the limiting structures respectively restricts the corresponding movable bracket from being disengaged from the accommodating space, so that the keycap is separated from the upper ends of the two movable brackets.

In summary, the fixing bracket of the satellite shaft module of the button structure of the present invention has a limiting structure and a accommodating space, and the accommodating space is used for accommodating the lower end of the movable bracket, so as to limit the detachment of the movable bracket from the accommodating space, so when used When the user wants to remove the keycap from the bottom plate, each of the limiting structures can respectively restrict the corresponding movable bracket from being disengaged in the self-accommodating space, so that the fixing bracket and the movable bracket of the satellite shaft module can be removed from the keycap. It is left on the bottom plate when it is placed on the bottom plate to increase the convenience of the mechanical button structure during adjustment or function verification. The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the embodiments of the invention.

The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation. Please refer to FIG. 1 to FIG. 3 . FIG. 1 is a partial exploded view of a button structure 1000 according to an embodiment of the present invention. FIG. 2 and FIG. 3 are respectively exploded views of the button structure 1000 according to another embodiment of the present invention. . As shown in FIG. 1 to FIG. 3, the button structure 1000 includes a bottom plate 1, a keycap 2, a satellite shaft module 3, a switch body 4, and a balance bar 5, and the key cap 2 is movably disposed on the bottom plate. 1 above, the keycap 2 has a first side edge portion 20, a second side edge portion 21, a first keycap engagement structure 22, a second keycap engagement structure 23, a keycap long axis 24, and a pressing portion 25, the first side edge portion 20 and the second side edge portion 21 are respectively adjacent to opposite ends of the keycap long shaft 24, and the first keycap engaging structure 22 and the second keycap engaging structure 23 respectively Corresponding to the first side edge portion 20 and the second side edge portion 21, that is, the first keycap engagement structure 22 and the second keycap engagement structure 23 are also adjacent to opposite ends of the keycap long axis 24, respectively, the pressing portion 25 Between the first keycap engagement structure 22 and the second keycap engagement structure 23.

In addition, the satellite shaft module 3 includes two fixing brackets 30 and two movable brackets 31 fixed to the bottom plate 1 and corresponding to the first side edge portion 20 and the second side edge portion 21 of the keycap 2 respectively. Further, a first engaging slot 10, a first limiting slot 11, an assembly slot 12, a second engaging slot 13 and a second limiting slot 14 are formed on the bottom plate 1, and the first limiting slot 11 is formed. The second engagement slot 14 is connected to the second engagement slot 13 and the assembly slot 12, and each of the fixing brackets 30 includes a first base 301, a saddle 302, and The first base 301 includes a first base body 3010, a first base limiting portion 3011 and a first base engaging portion 3012. The first base body 3010 is located at the key cap. The first base limiting portion 3011 and the first base engaging portion 3012 protrude from the first base body 3010, and the first base limiting portion 3011 is engaged with the first base. The portions 3012 are all located on the same side of the first base body 3010, and one end of the saddle 302 is connected to the first base limiting portion 3011. The second base 303 includes a second base body 3030 , a second base limiting portion 3031 and a second base engaging portion 3032 . The second base body 3030 is located between the key cap 2 and the bottom plate 1 . The second base limiting portion 3031 and the second base engaging portion 3032 both protrude from the second base body 3030 , and the second base limiting portion 3031 and the second base engaging portion 3032 are both located on the second base The same side of the body 3030, and the second base limiting portion 3031 is connected to the other end of the saddle 302.

In addition, the fixing brackets 30 each have an accommodating space 304, wherein the accommodating space 304 can be defined by the first pedestal 301, the second pedestal 303 and the saddle 302. In addition, each of the movable brackets 31 includes a frame body 310, a keycap engaging portion 311 and a frame limiting portion 312. The frame body 310 is movably received in the accommodating space 304, and the keycap engaging portion 311 protrudes. The frame body 310, that is, the frame body 310 can be the body of the movable bracket 31, and the keycap engaging portion 311 can be the upper end of the movable bracket 31 and can be engaged with the first keycap engaging structure 22 of the keycap 2 and The second keycap engaging structure 23 is configured to be engaged with one of the keycap engaging portions 311 of the movable bracket 31, and the second keycap engaging structure 23 is used for the card. The other of the keycap engaging portions 311 of the movable bracket 31 is coupled to the upper end of the movable bracket 31 via the first keycap engaging structure 22 and the second keycap engaging structure 23, respectively. The first side portion 20 and the second side portion 21 are provided.

In addition, the frame limiting portion 312 protrudes from the side of the frame body 310 opposite to the keycap engaging portion 311 and is movably engaged with the saddle 302. In this embodiment, the frame limiting portion 312 can include a first limiting arm 3120 and a second limiting arm 3121. The first limiting arm 3120 protrudes from one side of the frame 310, and the second limiting arm 3121 protrudes from the other side of the frame 310, that is, the first limiting arm 3120 and the second limiting arm 3121 are respectively located on opposite sides of the frame 310, and between the first limiting arm 3120 and the second limiting arm 3121 Defining a limiting space 3122 for engaging the saddle 302, when the limiting space 3122 is engaged with the saddle 302, the saddle 302 can restrict the frame 310 from moving up and down relative to the saddle 302, that is, the movable bracket 31 The engagement mechanism of the first limiting arm 3120 of the frame limiting portion 312 and the limiting space 3122 defined by the second limiting arm 3121 and the saddle 302 of the fixing bracket 30 can restrict the movable bracket 31 from being opposite to the saddle 302. Move up and down in a straight line. In addition, the frame limiting portion 312 further includes a third limiting arm 3123 protruding from the other side of the frame body 310 that is identical to the second limiting arm 3121 and the second limiting arm. The 3121 is spaced apart such that when the movable bracket 31 moves up and down linearly with respect to the saddle 302, the third limiting arm 3123 prevents the movable bracket 31 from rotating relative to the saddle 302 of the fixed bracket 30.

Please refer to FIG. 1 to FIG. 5 . FIG. 4 is a schematic diagram of the button structure 1000 in the first assembled state according to an embodiment of the present invention. FIG. 5 is a schematic diagram of the button structure 1000 in the second assembled state according to the embodiment of the present invention. As shown in FIG. 1 to FIG. 5 , the bottom plate 1 is formed with a button receiving groove 15 at the second assembly groove 12 , and the switch body 4 can be mounted on the bottom plate 1 via the button receiving groove 15 . In addition, the balance bar 5 has a middle rod body 50 and two interlocking rod bodies 51. The middle rod body 50 is substantially parallel to the keycap long shaft 24 of the keycap 2 and is pivotally connected to the two fixing brackets 30. The second linkage rod body 51 has The substantially symmetrical shape, the root portion 510 of the two linkage rods 51 are respectively connected to opposite ends of the middle rod body 50, and the tail portions 511 of the second linkage rod body 51 are respectively connected to the two movable brackets 31. In this embodiment, the tail portion 511 of the interlocking rod body 51 of the balance bar 5 is bent relative to the middle rod body 50 to form a rod end 52. In addition, a first slot 3013 is formed on the first base body 3010 of the fixed bracket 30, and a long slot 3101 is formed in the frame 310 of the movable bracket 31. When the movable bracket 31 and the balance bar 5 are assembled, the rod ends 52 of the balance bar 5 can be respectively disposed in the long groove 3101 of the frame body 310. Since the long groove 3101 on the frame body 310 is a long groove structure, When the rod end 52 is disposed in the elongated groove 3101, the rod end 52 is movable relative to the long groove 3101.

When the button structure 1000 is assembled, the rod end 52 of the balance bar 5 can be movably disposed in the long groove 3101 of the frame body 310 of the movable bracket 31 in advance. Then, the switch body 4 can be mounted on the bottom plate 1 via the button receiving groove 15 (as shown in FIG. 4), and then the saddle 302 of the fixing bracket 30 is respectively assembled through the assembly on both sides of the button receiving groove 15. The slot 12, that is, when the fixing bracket 30 and the bottom plate 1 are assembled, the saddle 302 of the fixing bracket 30 can be passed through the assembly slot 12 located on both sides of the button receiving slot 15 as shown in FIG. The position shown in FIG. 5 is such that the first base limiting portion 3011 and the second base limiting portion 3031 are respectively disposed and confined in the first limiting slot 11 and the second limiting slot 14, and the first base is made. The seat engaging portion 3012 and the second base engaging portion 3032 are respectively engaged with the groove wall of the first engaging groove 10 and the groove wall of the second engaging groove 13 . In this way, the two fixing brackets 30 of the satellite shaft module 3 can be fixed on the bottom plate 1. In addition, the switch body 4 is also disposed on the bottom plate 1 and located between the two fixing brackets 30.

It is worth mentioning that the first base 301 of the fixing bracket 30 of the present invention is rotated 180 degrees with respect to the geometric center of the saddle 302 to the second base 303, that is, the first base 301 and the second of the fixing bracket 30 of the present invention. The pedestal 303 is symmetrical with respect to the saddle 302. Therefore, when the fixing bracket 30 is assembled, the first pedestal limiting portion 3011 and the second pedestal limiting portion 3031 are respectively disposed and limited to the first step. The first base engaging portion 3012 and the second base engaging portion 3032 are respectively engaged with the first engaging groove 10 and the second engaging groove The first base 301 of the fixing bracket 30 of the present invention is rotated 180 degrees with respect to the geometric center of the saddle 302 to the structural design of the second base 303, and the fixing bracket 30 can be rotated relative to the above-mentioned direction. The 180-degree orientation is assembled on the bottom plate 1 , and the first base limiting portion 3011 and the second base limiting portion 3031 are respectively disposed and restricted in the second limiting slot 14 and the first limiting slot 11 , and The first base engaging portion 3012 and the second base engaging portion 3032 are respectively engaged with the second engaging groove 13 slot wall and the first engaging groove 1 0 slot wall. In this way, the first base 301 of the fixing bracket 30 of the present invention is rotated 180 degrees with respect to the geometric center of the saddle 302 to overlap with the structural design of the second base 303, and the fixing bracket 30 is not required to be defined when the fixing bracket 30 is assembled with the bottom plate 1. The direction is to facilitate the assembly of the operator.

Please refer to FIG. 5 and FIG. 6 . FIG. 6 is a schematic diagram of the movable bracket 31 mounted on the fixing bracket 30 according to an embodiment of the present invention. As shown in FIG. 5 and FIG. 6, when the fixing bracket 30 of the satellite axle module 3 is assembled to the bottom plate 1 (as shown in FIG. 5), the movable bracket 31 of the satellite axle module 3 can be mounted on the fixed bracket. 30 (as shown in FIG. 6), at this time, the frame limiting portion 312 of the movable bracket 31 (ie, the first limiting arm 3120, the second limiting arm 3121 and the third limiting arm 3123) respectively The movable manner is received in the accommodating space 304 of the fixing bracket 30, and the frame limiting portion 312 is engaged with the saddle 302 of the fixing bracket 30, that is, the saddle 302 of the fixing bracket 30 is engaged with the A limiting arm 3120, a second limiting arm 3121 and a limiting space 3122 defined by the third limiting arm 3123. In this way, the movable bracket 31 of the satellite axle module 3 can move up and down linearly with respect to the fixed bracket 30. Then, the middle rod 50 of the balance bar 5 is pivotally connected to the first slot 3013 of the first base 301 of the fixing bracket 30 to complete the assembly of the movable bracket 31 and the fixing bracket 30 (as shown in FIG. 1). ).

It is worth mentioning that the first base 301 of the fixing bracket 30 further includes a first bracket limiting rib 3014 protruding from the first base body 3010, and the second base 303 of the fixing bracket 30 further comprises a second protruding portion. A second bracket limiting rib 3034 of the base body 3030, the first bracket limiting rib 3014 and the second bracket limiting rib 3034 together define a limiting structure 300, and each movable bracket 31 includes a third bracket limiting rib 313 And a fourth bracket limiting rib 314, the third bracket limiting rib 313 and the fourth bracket limiting rib 314 respectively protrude from the frame 310. When the frame limiting portion 312 of the movable bracket 31 is movably received in the receiving space 304 of the fixing bracket 30, the first bracket limiting rib 3014 of the first base 301 and the third bracket limit of the movable bracket 31 The ribs 313 are engaged, and the second bracket limiting ribs 3034 of the second base 303 are engaged with the fourth bracket limiting ribs 314 of the movable bracket 31 to prevent the frame 310 of the movable bracket 31 from being disengaged from the receiving space 304 of the fixed bracket 30. .

It should be noted that the second base 303 of each fixing bracket 30 of the present invention may be further formed with a second slot 3033, and the second slot 3033 is substantially identical to the first slot 3013 of the first base 301. Height, therefore, when the satellite axle module 3 is assembled, in addition to the movable bracket 31 and the balance bar 5 can be assembled with the fixed bracket 30 in the direction shown in FIG. 5, when the movable bracket 31 is provided with the balance bar 5 in the opposite figure 5 When the orientation of the 180 degree rotation is assembled with the fixing bracket 30, the saddle 302 of the fixing bracket 30 can still be engaged with the first limiting arm 3120, the second limiting arm 3121 and the third limiting arm 3123. Inside and outside the defined limiting space 3122, since the second base 303 further has a second slot 3033, when the movable bracket 31 and the balance bar 5 are rotated 180 degrees with respect to the direction shown in FIG. 5, the fixing bracket 30 is fixed. During assembly, the frame limiting portion 312 of the movable bracket 31 is still movably received in the accommodating space 304 of the fixing bracket 30, and the middle rod 50 of the balance bar 5 can be pivotally connected to the second base of the fixing bracket 30. The second slot 3033 of the seat 303 is configured to complete the movable bracket 31 and the fixed bracket 30 Assembly. As a result, the first base 301 of the fixing bracket 30 of the present invention is formed with a first slot 3013, the second base 303 is formed with a second slot 3033, and the first slot 3013 and the second slot 3033 are substantially The structural design at the same height does not need to define the orientation of the movable bracket 31 when the fixed bracket 30 is assembled with the movable bracket 31 to facilitate assembly by the operator.

In addition, referring to FIG. 9 and FIG. 10, FIG. 9 is a side view of the bottom plate 1, the fixing bracket 30 and the movable bracket 31 according to the embodiment of the present invention, and FIG. 10 is a bottom plate 1 fixed according to an embodiment of the present invention. A schematic top view of the bracket 30 and the movable bracket 31. As shown in FIG. 9 and FIG. 10, the two fixed brackets 30 of the satellite axle module 3 have the same structural features, and the two movable brackets 31 of the satellite axle module 3 have the same structural features, so in practice, two The fixing bracket 30 and the two movable brackets 31 are defined not only when the fixing bracket 30 is assembled to the bottom plate 1 but also when the movable bracket 31 is assembled to the fixing bracket 30, and the fixing bracket 30 and the movable bracket 31 are defined, and the two fixing brackets 30 and 2 of the present invention are defined. The movable bracket 31 can still be shared by the same module to save manufacturing costs.

Please refer to FIG. 1 , FIG. 2 , FIG. 7 and FIG. 8 . FIG. 7 is a side view showing the button structure 1000 in a released state according to an embodiment of the present invention. FIG. 8 is a view showing the button structure 1000 being pressed according to an embodiment of the present invention. A side view of the state. As shown in FIG. 1 , FIG. 2 , FIG. 7 , and FIG. 8 , after the assembly of the fixing bracket 30 of the bottom plate 1 , the satellite shaft module 3 and the movable bracket 31 is completed, the first key of the key cap 2 can be The cap engagement structure 22 and the second keycap engagement structure 23 are respectively engaged with the keycap engagement portions 311 of the movable brackets 31 to assemble the keycap 2 to the movable bracket 31 of the satellite axle module 3 and can be used with The movable bracket 31 moves up and down. When the keycap 2 of the button structure 1000 is pressed, the keycap 2 can be moved downward from a release position as shown in FIG. 7 to a pressing position as shown in FIG. 8, at which time the balance bar 5 is substantially The middle rod 50 is a fulcrum and rotates relative to the fixed bracket 30 and the bottom plate 1. The tail portion 511 of the two linked rods 51 drives the two movable brackets 31 to move downward synchronously, so that the two movable brackets 31 are maintained at substantially the same height. That is, when the keycap 2 is pressed to move downward, the balance bar 5 can be used to drive the keycap 2 as a whole smoothly downward to prevent the keycap 2 from loosening or shaking during the downward movement.

It is to be noted that the switch body 4 includes a button base 40, a plunger member 41 and a reset member 42. The button base 40 can be fixed to the base plate 1 via a button receiving slot 15 of the base plate 1, such as a button. The base 40 can be snapped into the slot wall of the button receiving slot 15 to be fixed on the bottom plate 1, but the invention is not limited thereto. The plunger member 41 is disposed on the button base 40 and has a plunger space 410. The reset member 42 is disposed in the plunger space 410, and the reset member 42 partially protrudes from the plunger member 41, so that the reset member 42 is disposed on the button base. Between the seat 40 and the keycap 2. In this embodiment, the reset member 42 can be a spring. When the keycap 2 is moved downward to the pressing position as shown in FIG. 8, the pressing portion 25 of the keycap 2 can drive the plunger member 41 to trigger the switch body 4 to generate a button signal.

Further, when the button cap 2 is no longer pressed, the reset member 42 can drive the keycap 2 to be reset upward by the pressing position as shown in FIG. 8 to the release position as shown in FIG. Similarly, during the resetting of the keycap 2, the balance bar 5 is substantially rotated with respect to the fixed bracket 30 and the bottom plate 1 with the middle rod 50 as a fulcrum, and the tail portion 511 of the second linkage rod 51 drives the two movable brackets 31 to synchronize upward. The movement is such that the two movable brackets 31 are maintained at substantially the same height. That is, when the keycap 2 is released and moved upward, the balance bar 5 can be used to drive the keycap 2 as a whole smoothly upward to prevent the keycap 2 from flipping during the upward movement. It is worth mentioning that when the user wants to remove the keycap 2 from the bottom plate 1 due to maintenance or adjustment, the limiting structure 300 of each fixing bracket 30 (ie, the first bracket limiting rib 3014 and the second bracket limiting rib) The third bracket limiting rib 313 and the fourth bracket limiting rib 314 of the corresponding movable bracket 31 can be respectively matched to prevent the corresponding movable bracket 31 from being disengaged in the self-accommodating space 304, thereby causing the keycaps 2 and 2 The upper end of the movable bracket 31 is separated and the two movable brackets 31 are still accommodated in the accommodating space 304. Compared with the prior art, the fixing bracket of the satellite shaft module of the button structure of the present invention has a limiting structure and a accommodating space, and the accommodating space is used for accommodating the lower end of the movable bracket, so as to limit the detachment of the movable bracket from the accommodating space, so When the user wants to remove the keycap from the bottom plate, each of the limiting structures can respectively restrict the corresponding movable bracket from being disengaged in the self-accommodating space, so that the fixed bracket and the movable bracket of the satellite shaft module can be moved in the keycap It is left on the bottom plate except for the bottom plate to increase the convenience of the mechanical button structure during adjustment or function verification. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1000‧‧‧Key structure

1‧‧‧floor

10‧‧‧First engagement slot

11‧‧‧First limit slot

12‧‧‧ Assembly slot

13‧‧‧Second snap groove

14‧‧‧Second limit slot

15‧‧‧Key accommodating slot

2‧‧‧Key Cap

20‧‧‧First side

21‧‧‧Second side

22‧‧‧First keycap engagement structure

23‧‧‧Second keycap engagement structure

24‧‧‧Keycap long axis

25‧‧‧ Pressing Department

3‧‧‧Satellite shaft module

30‧‧‧Fixed bracket

300‧‧‧Limited structure

301‧‧‧First base

3010‧‧‧First base body

3011‧‧‧First base limiter

3012‧‧‧First base engagement

3013‧‧‧First slotting

3014‧‧‧First bracket limit rib

302‧‧‧ saddle

303‧‧‧Second base

3030‧‧‧Second base body

3031‧‧‧Second base stop

3032‧‧‧Second base engagement

3033‧‧‧Second slotting

3034‧‧‧Second bracket limit rib

304‧‧‧ accommodating space

31‧‧‧ activity bracket

310‧‧‧ ‧ body

3101‧‧‧Long slot

311‧‧‧Key Cap Engagement Department

312‧‧ ‧ frame limit

3120‧‧‧First limit arm

3121‧‧‧second limit arm

3122‧‧‧Limited space

3123‧‧‧3rd limit arm

313‧‧‧ Third bracket limit rib

314‧‧‧Four bracket limit rib

4‧‧‧Switch body

40‧‧‧Key base

41‧‧‧Plunger parts

410‧‧‧Plunger space

42‧‧‧Reset parts

5‧‧‧Balance rod

50‧‧‧ middle section

51‧‧‧ linkage rod

510‧‧‧ root

511‧‧‧ tail

52‧‧‧ rod end

FIG. 1 is a partial exploded view of a button structure according to an embodiment of the present invention. 2 and 3 are exploded views of the key structure of the embodiment of the present invention at another viewing angle. FIG. 4 is a schematic view showing the key structure of the embodiment of the present invention in a first assembled state. FIG. 5 is a schematic view showing the key structure of the embodiment of the present invention in a second assembled state. Figure 6 is a schematic view of the movable bracket mounted on the fixed bracket according to the embodiment of the present invention. Figure 7 is a side elevational view showing the button structure in a released state according to an embodiment of the present invention. Figure 8 is a side elevational view showing the button structure in a pressed state according to an embodiment of the present invention. Figure 9 is a side elevational view of the bottom plate, the fixed bracket and the movable bracket of the embodiment of the present invention. Figure 10 is a top plan view of a bottom plate, a fixed bracket and a movable bracket according to an embodiment of the present invention.

Claims (12)

A button structure includes: a bottom plate; a key cap movably disposed above the bottom plate, the key cap having a keycap long shaft, a first keycap engaging structure, a second keycap engaging structure, a first side edge portion and a second side edge portion, the first side edge portion and the second side edge portion are respectively adjacent to opposite ends of the long axis of the keycap; a satellite axis module comprising: a fixing bracket is fixed on the bottom plate and corresponding to the first side edge portion and the second side edge portion respectively, the two fixing brackets each have a limiting structure and an accommodating space; and two movable brackets are respectively respectively The lower end of the two movable brackets are movably received in the accommodating space of the two fixed brackets, and the upper ends of the two movable brackets respectively have a keycap engaging portion, the two-key cap The engaging portion can be selectively separated or connected to the first keycap engaging structure and the second keycap engaging structure; a switch body disposed on the bottom plate and located between the two fixing brackets; The balance bar has a middle rod body and two linkage rod bodies, The middle rod is substantially parallel to the long axis of the keycap, and the middle rod is pivotally connected to the two fixed brackets, and the roots of the two linked rods are respectively connected to opposite ends of the middle rod, and the tails of the two linked rods are respectively connected The two movable brackets; wherein, when the keycap moves up and down relative to the bottom plate, the balance bar substantially rotates relative to the bottom plate with the middle rod as a fulcrum, and the two linked rod tails drive the two movable brackets to synchronize Moving up and down to maintain the two movable brackets at substantially the same height; wherein, when the keycap is removed by force, the two keycap engaging portions respectively from the first keycap engaging structure and the second keycap The engaging structure is disengaged, so that the key cap is separated from the upper ends of the two movable brackets, but each of the limiting structures respectively limits the corresponding movable bracket from being unable to be removed from the receiving space The two movable brackets are still respectively accommodated in the corresponding accommodating spaces, and the two linked rod tails are still connected to the two movable brackets respectively. The button structure of claim 1, wherein the bottom plate is formed with a first engaging groove, a first limiting slot and an assembly slot, the first limiting slot is connected to the first engaging slot and the assembly a slot, and each of the fixing brackets includes: a first base, comprising: a first base body located between the key cap and the bottom plate; a first base limiting portion protruding from the first base body And a first base engaging portion protruding from the first base body; and a saddle having one end connected to the first base limiting portion, wherein the saddle passes through the assembly slot to enable the first A base limiting portion is disposed and restrained in the first limiting slot, and the first base engaging portion is engaged with the first engaging slot groove wall. The button structure of claim 2, wherein each movable bracket further comprises: a frame body, the keycap engagement portion protrudes from the frame body; and a frame limiting portion protruding from the frame body and movable The saddle is engaged to restrict the frame from moving up and down relative to the saddle. The button structure of claim 3, wherein the frame limiting portion includes a first limiting arm and a second limiting arm, the first limiting arm protruding from one side of the frame, the second The limiting arm protrudes from the other side of the frame, and a limiting space for engaging the saddle is defined between the first limiting arm and the second limiting arm. The button structure of claim 4, wherein the frame limiting portion further includes a third limiting arm protruding from the other side of the frame and the second limiting arm Interval setting. The button structure of claim 3, wherein the first base body is formed with a first slot, the frame is formed with a long slot, and the tail of the balance bar is bent relative to the middle rod to form a rod The rod end is movably disposed in the long slot, and the middle rod is pivotally connected to the first slot. The button structure of claim 2, wherein the bottom plate is further formed with a second engaging slot and a second limiting slot, the second limiting slot is connected to the second engaging slot and the assembly slot, and Each of the fixing brackets further includes: a second base, comprising: a second base body located between the key cap and the bottom plate; a second base limiting portion protruding from the second base body and connected And at the other end of the saddle; and a second base engaging portion protruding from the second base body, wherein the saddle passes through the assembly slot, and the second base limiting portion is disposed and limited to the The second base engaging portion is engaged with the second engaging groove groove wall. The button structure of claim 7, wherein the first base, the second base and the saddle define the accommodating space, and each movable bracket further comprises: a frame, movably accommodated in the In the accommodating space, the keycap engaging portion protrudes from the frame body; and a frame limiting portion protrudes from the frame body and is movably engaged with the saddle to limit the frame body The saddle is moved up and down. The button structure of claim 8, wherein the first base further comprises a first bracket limiting rib protruding from the first base body, the second base further comprising a second base body protruding from the second base body a second bracket limiting rib, the first bracket limiting rib and the second bracket limiting rib jointly define the limiting structure, each movable bracket comprises a third bracket limiting rib and a fourth bracket limiting rib The third bracket limiting rib and the fourth bracket limiting rib respectively protrude from the frame body, the first bracket limiting rib cooperates with the third bracket limiting rib, and the second bracket limiting rib and the The fourth bracket limiting rib cooperates to prevent the frame from coming off the receiving space. The button structure of claim 7, wherein the first base is rotated 180 degrees with respect to the geometric center of the saddle to the second base. The button structure of claim 1, wherein the switch body comprises: a button base fixed on the bottom plate; a reset member disposed between the button base and the key cap; and a plunger member The button base is disposed on the button base and has a plunger space. The reset member is disposed in the plunger space, wherein the reset member protrudes from the plunger member and drives the key cap to be reset. The button structure of claim 1, wherein the two fixing brackets have the same structural features, and the two movable brackets have the same structural features.