TWM474242U - Keyswitch and keyboard therewith - Google Patents

Abstract

The present invention discloses a key switch disposed on a base of a keyboard. The key switch includes a key cap, a link bar, a frame, a connecting structure and an engaging portion. The key cap is disposed above the base, and the link bar is disposed between the key cap and the base. The frame is disposed on the base, and the connecting structure is connected to the frame. The engaging portion is connected to the connecting structure, and an end portion of the link bar is slidably engaged with the engaging portion. The engaging portion cooperates with the connecting structure for absorbing vibration generated by the link bar as the end portion of the link bar slides inside the engaging portion.

Description

Button and its keyboard

The present invention relates to a button and a keyboard, and more particularly to a button and a keyboard that can reduce noise when pressed.

Generally, the button of the keyboard has a balance mechanism, which can be a balance bar, one end of which is pivotally connected to one side of the keycap, and the other end of which is slidably disposed on the bottom plate. When the button is pressed, by the balance bar sliding relative to the bottom plate and pivoting relative to the key cap, the balance mechanism can be used to keep the key cap horizontal relative to the bottom plate during the above operation, so as to prevent the key cap from flipping during the above operation. To reduce the sensitivity of the button trigger. In practice, the above balance bar and the bottom plate are made of metal material, so the vibration generated when the other end of the balance bar slides on the bottom plate causes noise, which in turn affects the operation quality of the button.

Therefore, the present invention provides a button and a keyboard that can reduce noise when pressed to solve the above problem.

In order to achieve the above object, the present invention discloses a button disposed on a bottom plate of a keyboard, the button comprising a key cap, a connecting rod, a frame, a connecting structure and a engaging portion. The connecting rod is disposed on the bottom plate, the connecting rod is disposed between the key cap and the bottom plate, the frame is disposed on the bottom plate, the connecting structure is coupled to the frame, and the engaging portion is coupled to the connecting structure, One end of the connecting rod member is slidably engaged with the engaging portion, and the engaging portion cooperates with the connecting structure to absorb the vibration generated when the end portion of the connecting rod member slides in the engaging portion, wherein The frame, the connecting structure and the engaging portion are made of a plastic material.

According to one embodiment of the present invention, the present invention further discloses a keyboard comprising a bottom plate and a plurality of buttons, a plurality of buttons being disposed on the bottom plate, and a structure of one of the plurality of buttons is as described above.

According to one embodiment of the present invention, the present invention further discloses a button comprising a keycap, a lifting support mechanism, a connecting rod member and a plastic material member. The key cap is disposed above the bottom plate, and the lifting support mechanism is disposed between the bottom plate and the key cap, and the lifting support mechanism is configured to support the lifting and lowering movement of the key cap relative to the bottom plate. The connecting rod member is disposed between the key cap and the bottom plate. When the key cap performs the lifting movement, the connecting rod member can increase the stability of the key cap, and the connecting rod member has a first lower end portion. The plastic material member includes a frame, a first connecting structure and a first engaging portion, the frame is disposed on the bottom plate, the frame surrounds the lifting support mechanism, and the first connecting structure extends from the frame to the connecting rod The first lower end portion extends, and the first engaging portion extends upward from the first connecting structure to protrude from the bottom plate. a first engaging space is defined between the first engaging portion and the bottom plate, and the first lower end portion of the connecting rod member is received in the first engaging space, when the key cap performs the lifting movement The first lower end portion of the connecting rod slides in the first engaging space.

In summary, the frame, the connecting structure and the engaging portion of the plastic material member of the present invention are made of a plastic material, and have shock absorbing characteristics, so when the end portion of the connecting rod member slides relative to the engaging portion, the card The joint portion can cooperate with the connecting structure to absorb the vibration generated when the end portion of the connecting rod member slides in the engaging portion, thereby reducing the noise generated when the end portion of the connecting rod member slides relative to the engaging portion, thereby lifting the button. Operational quality. The foregoing 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.

3‧‧‧ keyboard

30‧‧‧floor

301‧‧‧Second chute

303‧‧‧Second card slot

305‧‧‧First engagement space

307‧‧‧ first hole

309‧‧‧Second engagement space

32‧‧‧ boards

321‧‧‧ switch

323‧‧‧Second hole

34, 34'‧‧‧ button

36‧‧‧Key Cap

361‧‧‧First chute

363‧‧‧First card slot

38‧‧‧Flexible parts

381‧‧‧Trigger

40‧‧‧ Lifting support mechanism

401‧‧‧First support

403‧‧‧second support

4010‧‧‧First sliding part

4012‧‧‧First pivotal

4030‧‧‧Second sliding part

4032‧‧‧Second pivotal

42, 42'‧‧‧ connecting rods

421, 421 '‧‧‧ first lower end

4210‧‧‧ Straight rod

4212‧‧‧crossbar

423‧‧‧second lower end

425‧‧‧ Side

44, 44'‧‧‧plastic material components

441‧‧‧Frame

443, 443'‧‧‧ first connection structure

445, 445'‧‧‧ first joint

447‧‧‧ accommodating opening

449‧‧‧Second connection structure

451‧‧‧Second Bonding Department

46‧‧‧ pivot structure

S1‧‧‧ first side

S2‧‧‧ second side

A, A'‧‧‧ long axis

X-X, Y-Y‧‧‧ hatching

FIG. 1 is a schematic diagram of components of a keyboard of the present embodiment.

FIG. 2 is a schematic diagram of some components of the button of the creative embodiment.

FIG. 3 is a schematic diagram showing the explosion of some components of the button of the creative embodiment.

Fig. 4 is a schematic cross-sectional view showing a portion of the element shown in Fig. 2 along the section line X-X.

Fig. 5 is a schematic cross-sectional view showing a part of the element along the section line Y-Y shown in Fig. 2.

Figure 6 is a schematic exploded view of a part of a button of another embodiment of the present 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 used to illustrate that it is not intended to limit the creation. Please refer to FIG. 1 , which is a schematic diagram of components of the keyboard 3 of the present embodiment. As shown in FIG. 1 , the keyboard 3 includes a bottom plate 30 , a circuit board 32 , and a plurality of buttons 34 . The circuit board 32 and the plurality of buttons 34 are disposed on the bottom plate 30 , and a plurality of buttons 34 are pressed by the user. The circuit board 32 is triggered to perform the operations desired by the user, such as inputting characters, symbols or numbers.

Please refer to FIG. 2 to FIG. 4 , FIG. 2 is a partial schematic diagram of the button 34 of the present embodiment, FIG. 3 is a schematic diagram showing the explosion of some components of the button 34 of the present embodiment, and FIG. 4 is a diagram of FIG. A schematic cross-sectional view of a portion of the button 34 along section line XX. As shown in FIG. 2 to FIG. 4, the button 34 includes a key cap 36 and an elastic member 38. The key cap 36 is disposed above the bottom plate 30, and the elastic member 38 is disposed between the bottom plate 30 and the key cap 36. When the user presses the button 34, the key cap 36 moves toward the bottom plate 30 to compress the elastic member 38. At this time, the elastic member 38 stores an elastic potential energy due to elastic deformation. When the user completes the pressing, the user's finger leaves the keycap 36, and the elastic member 38 can release the elastic position energy to apply the elastic returning force of the keycap 36, thereby driving the keycap 36 to be reset.

In this embodiment, the elastic member 38 may be a rubber dome, but is not limited thereto. For example, the elastic member 38 can also be a metal spring. As for which of the above designs is used, it depends on actual needs. In addition, the circuit board 32 includes a switch 321 corresponding to each button 34, and the elastic member 38 has a trigger portion 381 corresponding to the switch 321 . When the user presses the button 34, the elastic member 38 is compressed so that the trigger portion 381 presses the switch 321 of the circuit board 32. In other words, the switch 321 of the circuit board 32 can be selectively turned on by the triggering portion 381 of the elastic member 38, so that the user can perform the corresponding key command by pressing the button 34, for example, inputting characters, numbers or symbols. Wait. In this embodiment, the circuit board 32 can be a thin film circuit board, but is not limited thereto. For example, the circuit board 32 can also be a button circuit board that generally has a trigger switch. As for which of the above designs is used, it depends on actual needs.

In addition, the button 34 includes a lifting support mechanism 40 disposed between the bottom plate 30 and the keycap 36. The lifting support mechanism 40 is used to support the lifting and lowering movement of the keycap 36 relative to the bottom plate 30, for example, when When the user presses the button 34, the lifting support mechanism 40 can evenly distribute the pressing force of the user to the key cap 36, so that the key cap 36 can smoothly move downward relative to the bottom plate 30, thereby stably triggering the switch 321 to execute the button. instruction. When the keycap 36 is in the above-described resetting process, the lifting support mechanism 40 can evenly distribute the elastic restoring force generated by the elastic member 38 to the keycap 36 so that the keycap 36 can smoothly move upward relative to the bottom plate 30. In other words, the lifting support mechanism 40 can be used to drive the keycap 36 to smoothly move up and down relative to the bottom plate 30, so that the keycap 36 is kept stable during the lifting process, which is advantageous for the stability of the actuation of the button 34.

As shown in FIG. 4, the key cap 36 has a first sliding slot 361 and a first slot 363. The bottom plate 30 has a second sliding slot 301 and a second slot 303. Further, the lifting support mechanism 40 includes a The first support member 401 and the second support member 403 are pivotally connected to the first support member 401. The first support member 401 has a first sliding portion 4010 and a first pivot portion 4012. When the first support member 401 is assembled, the first sliding portion 4010 is slidably disposed on the first chute In the 361, the first pivoting portion 4012 is rotatably pivoted in the second card slot 303. The second support member 403 has a second sliding portion 4030 and a second pivot portion 4032. The second sliding portion 4030 is slidably disposed in the second sliding slot 301 , and the second pivoting portion 4032 is rotatably pivoted in the first locking slot 363 . As described above, when the key cap 36 is driven upward by the elastic member 38, the key cap 36 can maintain the key cap 36 horizontal relative to the bottom plate 30 by the structural design of the lifting support mechanism 40 described above. Thereby, the key cap 36 can be smoothly raised and lowered with respect to the bottom plate 30 during being pressed or released.

Please refer to FIG. 3 and FIG. 5, and FIG. 5 is a schematic cross-sectional view of a portion of the button 34 along the section line Y-Y shown in FIG. As shown in FIG. 3 and FIG. 5, the button 34 further includes a connecting rod member 42 disposed between the key cap 36 and the bottom plate 30. When the key cap 36 performs the lifting movement by the lifting support mechanism 40, the button is connected. The rod 42 can increase the stability of the key cap 36, and the connecting rod 42 has a first lower end portion 421. In addition, the button 34 further includes a plastic material member 44, which includes a frame 441, a first connecting structure 443 and a first engaging portion 445. The frame 441 is disposed on the bottom plate 30 and surrounds the lifting support mechanism 40, and the first connection The structure 443 extends from the frame 441 to the first lower end portion 421 of the connecting rod member 42, and the first engaging portion 445 extends upward from the first connecting structure 443 to protrude from the bottom plate 30. In addition, a first engaging space 305 is defined between the first engaging portion 445 and the bottom plate 30, and the first lower end portion 421 of the connecting rod 42 is received in the first engaging space 305, and when the key cap 36 is lifted and lowered When the support mechanism 40 performs the lifting movement, the first lower end portion 421 of the connecting rod 42 can slide in the first engaging space 305.

Further, the frame 441 is formed with a receiving opening 447 for accommodating the elastic member 38, the lifting and lowering support mechanism 40 and the connecting rod member 42 to provide the elastic member 38, the lifting and lowering support mechanism 40 and the connecting rod member 42 when actuated. The space needed. In addition, the first bottom hole 307 is formed in the bottom plate 30. In this embodiment, the first hole 307 defines an accommodating space, and the accommodating space (ie, the first hole 307) is used to receive the first connecting structure 443. So that the first connection structure 443 is in the first hole 307 (ie The accommodating space extends inwardly so that the upper surface of the first connecting structure 443 does not protrude from the upper surface of the bottom plate 30. In this way, the first connecting structure 443 can be received in the first hole 307 (ie, the accommodating space) on the bottom plate 30 by the mechanism design of the accommodating space 305, so that the first connecting structure 443 is embedded in the bottom plate. Within 30, thereby reducing the overall thickness of the button 34. On the other hand, the first connecting structure 443 of the present invention does not occupy the space in the receiving opening 447 of the frame 441, so that the elastic member 38, the lifting support mechanism 40 and the connecting rod member 42 are not operated by the first connecting structure 443. Impact. In addition, the circuit board 32 further has a second hole 323 for passing the first engaging portion 445, that is, the first engaging portion 445 can extend upward from the first connecting structure 443 through the second. The hole 323 protrudes from the bottom plate 30.

In this embodiment, the first lower end portion 421 of the connecting rod member 42 is a straight rod, and the straight rod (ie, the first lower end portion 421) has a long axis A. As shown in FIG. 3, the direction of movement of the first lower end portion 421 of the connecting rod member 42 is substantially parallel to the long axis A, and the extending direction of the first connecting structure 443 is perpendicular to the long axis A, the first engaging portion. The extending direction of the 445 is perpendicular to the major axis A and abuts the upper surface of the straight bar (ie, the first lower end portion 421), that is, the extending direction of the first connecting structure 443 of the plastic material member 44 is parallel to the plastic material. The direction in which the first engaging portion 445 of the member 44 extends. In this embodiment, the connecting rod member 42 is substantially a U-shaped structure, and the U-shaped structure (ie, the connecting rod member 42) further has a second lower end portion 423, and the plastic material member 44 further includes a second connection. The structure 449 and a second engaging portion 451 extend from the frame 441 to the second lower end portion 423 of the connecting rod 42 , and the second engaging portion 451 extends upward from the second connecting structure 449 to protrude from On the bottom plate 30. In addition, a second engaging space 309 is defined between the second engaging portion 451 and the bottom plate 30. The second lower end portion 423 of the connecting rod member 42 is received in the second engaging space 309. When the key cap 36 is supported by the lifting and lowering When the mechanism 40 performs the lifting movement, the second lower end portion 423 of the connecting rod 42 can slide in the second engaging space 309.

In addition, the frame 441 further has a first side S1 and a second side S2, and The first side S1 is relative to the second side S2. In this embodiment, the first connecting structure 443 extends from the first side S1 of the frame 441, and the second connecting structure 449 extends from the second side S2 of the frame 441, that is, the first connecting structure 443 and the second The connecting structures 449 extend from opposite side edges of the frame 441, respectively. The structural connection between the first connecting structure 443 and the second connecting structure 449 of the present invention is not limited to the embodiment. For example, the first connecting structure 443 and the second connecting structure 449 may also extend from the adjacent two of the frame 441 respectively. Side. As for which of the above designs is used, it depends on actual needs.

As shown in FIG. 3 and FIG. 5, the button 34 further includes a pivoting structure 46 disposed on the keycap 36, and the pivoting structure 46 is used to pivot the keycap 36 to one side of the connecting rod 42. Edge 425. When the connecting rod member 42 is assembled, the first lower end portion 421 and the second lower end portion 423 of the connecting rod member 42 are slidably engaged with the first engaging space 305 and the second engaging space 309, respectively, and The side portion 425 of the connecting rod 42 is pivotally connected to the pivoting structure 46. When the key cap 36 is pressed, the first lower end portion 421 and the second lower end portion 423 of the connecting rod member 42 are slidable relative to the first engaging space 305 and the second engaging space 309, and the connecting rod member 42 is The side portions 425 are pivotable relative to the pivotal structure 46. In this way, the key cap 36 can be driven by the side edge portion 425 of the connecting rod 42 to approach the bottom plate 30.

In addition, when the user presses the button 34, the connecting rod member 42 can cooperate with the lifting and lowering support mechanism 40 to evenly distribute the pressing force of the user to the key cap 36, so that the key cap 36 can move downwardly relative to the bottom plate 30 more smoothly. The button command is executed by stably triggering the switch 321 of the circuit board 32. Similarly, when the key cap 36 is released, the elastic member 38 releases the elastic potential energy to impart the elastic restoring force to the key cap 36, thereby driving the keycap 36 to be reset. When the keycap 36 is in the above-described resetting process, the connecting rod member 42 can cooperate with the lifting and lowering support mechanism 40 to evenly distribute the elastic restoring force generated by the elastic member 38 to the keycap 36 so that the keycap 36 can smoothly face the bottom plate 36. 30 moves up. In other words, the connecting rod 42 can also be used to drive the keycap 36 to smoothly approach or away from the bottom plate 30, so that the key cap 36 is in the lifting process. It remains stable in the middle, which is beneficial to the stability of the button 34 when it is activated.

In this embodiment, the first connecting structure 443 and the first engaging portion 445 of the plastic material member 44 can be integrally formed with the frame 441, and the second connecting structure 449 and the second engaging portion 451 of the plastic material member 44 can be combined with the frame. The 441 is integrally formed, and the frame 441 of the plastic material member 44, the first connecting structure 443, the second connecting structure 449, the first engaging portion 445 and the second engaging portion 451 can be made of a plastic material. Since the plastic material has shock absorbing characteristics, when the first lower end portion 421 and the second lower end portion 423 of the connecting rod member 42 slide relative to each other in the first engaging space 305 and the second engaging space 309, the first engagement The portion 445 can be used to absorb the vibration generated when the first lower end portion 421 of the connecting rod member 42 slides in the first engaging space 305, thereby reducing the first lower end portion 421 of the connecting rod member 42 relative to the first engaging portion. The noise generated when the 445 is slid; the second engaging portion 451 can absorb the vibration generated when the second lower end portion 423 of the connecting rod 42 slides in the second engaging space 309, thereby reducing the number of the connecting rods 42 The noise generated when the lower end portion 423 slides relative to the second engaging portion 451.

In summary, when the end portions of the connecting rod member 42 (ie, the first lower end portion 421 and the second lower end portion 423) slide relative to the engaging portion (ie, the first engaging portion 445 and the second engaging portion 451) The engaging portion can absorb the vibration generated when the end portion of the connecting rod member 42 slides in the engaging portion, thereby reducing the noise generated when the end portion of the connecting rod member 42 slides relative to the engaging portion. In addition, in this embodiment, the first connecting structure 443 and the second connecting structure 449 can respectively be a cantilever structure, which can further absorb the vibration generated when the end of the connecting rod 42 slides in the engaging portion, thereby further The noise generated when the end of the connecting rod 42 slides relative to the engaging portion is reduced. In other words, the engaging portion (ie, the first engaging portion 445 and the second engaging portion 451) can cooperate with the connecting structure (ie, the first connecting structure 443 and the second connecting structure 449) to absorb the connecting rod 42 The vibration generated when the end portion slides in the engaging portion further reduces the noise generated when the end portion of the connecting rod member 42 slides relative to the engaging portion, thereby improving the operation quality of the button 34.

Please refer to FIG. 6. FIG. 6 is a schematic diagram showing the explosion of some components of the button 34' according to another embodiment of the present invention. As shown in FIG. 6, the main difference between the button 34' and the above-mentioned button 34 is that one of the buttons 34' connects the first lower end portion 421' of the rod member 42' to an L-shaped rod, which is L-shaped. The rod (ie, the first lower end portion 421') has a straight rod 4210 and a cross rod 4212, and the straight rod 4210 has a long axis A' connecting the first lower end portion 421' of the rod member 42' (ie, the L-shaped rod The direction of motion is substantially parallel to the major axis A', and the direction of extension of one of the first connecting structures 443' of the plastic material member 44' is perpendicular to the major axis A', and the first engaging portion 445 of one of the plastic material members 44' The direction of extension is parallel to the major axis A' and abuts the upper surface of the crossbar 4212, that is, the direction of extension of the first connecting structure 443' of the plastic material member 44' is perpendicular to the first of the plastic material member 44'. The extending direction of the engaging portion 445'. The components of the embodiment having the same reference numerals as in the above embodiments have the same structural design and function principle, and are not described herein for brevity.

Compared with the prior art, the frame, the connecting structure and the engaging portion of the plastic material member of the present invention are made of a plastic material, and have shock absorbing characteristics, so when the end portion of the connecting rod slides relative to the engaging portion, The engaging portion can cooperate with the connecting structure to absorb the vibration generated when the end portion of the connecting rod member slides in the engaging portion, thereby reducing the noise generated when the end portion of the connecting rod member slides relative to the engaging portion, thereby lifting the button The quality of operation. The above descriptions are only preferred embodiments of the present invention, and all changes and modifications made by the scope of the patent application of the present invention should be covered by the present invention.

30‧‧‧floor

305‧‧‧First engagement space

307‧‧‧ first hole

309‧‧‧Second engagement space

32‧‧‧ boards

323‧‧‧Second hole

34‧‧‧ button

36‧‧‧Key Cap

38‧‧‧Flexible parts

40‧‧‧ Lifting support mechanism

421‧‧‧First lower end

423‧‧‧second lower end

425‧‧‧ Side

44‧‧‧Plastic material components

441‧‧‧Frame

443‧‧‧First connection structure

445‧‧‧First engagement department

447‧‧‧ accommodating opening

449‧‧‧Second connection structure

451‧‧‧Second Bonding Department

46‧‧‧ pivot structure

S1‧‧‧ first side

S2‧‧‧ second side

A‧‧‧ long axis

Claims (17)

A button is disposed on a bottom plate of a keyboard, the button comprises: a key cap disposed above the bottom plate; a connecting rod member disposed between the key cap and the bottom plate; a frame Provided on the bottom plate; a connecting structure connected to the frame; and a engaging portion connected to the connecting structure, one end of the connecting rod member slidably engaged with the engaging portion, the engaging portion The portion cooperates with the connecting structure to absorb shock generated when the end portion of the connecting rod slides in the engaging portion. The button of claim 1, wherein the connecting structure is substantially parallel or perpendicular to the direction of the engaging portion. The button of claim 1, wherein the frame, the connecting structure and the engaging portion are integrally formed. The button of claim 1, wherein the frame, the connecting structure and the engaging portion are made of a plastic material. The button of claim 1, further comprising: a pivoting structure disposed on the keycap, the pivoting structure for pivoting the keycap to one side of the connecting rod, When the key cap slides in the engaging portion at the end of the connecting rod member, the key portion of the connecting rod member can be driven to approach or away from the bottom plate. The button of claim 5, further comprising a lifting support mechanism disposed between the bottom plate and the key cap, the lifting support mechanism for supporting the key cap to move up and down relative to the bottom plate. The button of claim 6, wherein the key cap is formed with a first sliding slot and a first slot, the second sliding slot and a second slot are formed on the bottom plate, and the lifting support mechanism includes a first supporting member includes a first sliding portion and a first pivoting portion, the first sliding portion is slidably disposed in the first sliding slot, and the first pivoting portion is rotatably pivotally connected In the second card slot; and a second support member pivotally connected to the first support member, the second support member has a second sliding portion and a second pivot portion, the second sliding portion The second pivoting portion is rotatably pivotally connected to the first card slot. The button of claim 1, further comprising: an elastic member disposed between the bottom plate and the key cap, the elastic member for driving the key cap to be reset. The button of claim 1, wherein the bottom plate is formed with a hole for receiving the connection structure. A keyboard includes a bottom plate and a plurality of buttons, the plurality of buttons being disposed on the bottom plate, and one of the plurality of buttons is the button described in any one of claims 1 to 9. A button includes: a bottom plate; a key cap disposed above the bottom plate; a lifting support mechanism disposed between the bottom plate and the key cap, the lifting support mechanism for supporting the key cap relative to The bottom plate performs a lifting movement; a connecting rod member disposed between the key cap and the bottom plate, wherein the connecting rod member increases the stability of the key cap when the key cap performs the lifting movement, the connecting rod member has a first lower end And a plastic material member comprising: a frame disposed on the bottom plate, the frame surrounding the lifting support mechanism; a first connecting structure from the frame to the first lower end of the connecting rod And a first engaging portion extending upward from the first connecting structure and protruding from the bottom plate, wherein the first engaging portion and the bottom plate define a first engaging space, the connecting rod member The lower end portion is received in the first engaging space, and when the key cap performs the lifting movement, the first lower end portion of the connecting rod member slides in the first engaging space. The button of claim 11, wherein the bottom plate has a first hole, the first connecting structure extends in the first hole so that the upper surface of the first connecting structure does not protrude from the upper surface of the bottom plate . The button of claim 11, wherein the button further comprises a circuit board, the circuit board is disposed on the bottom plate, the circuit board has a switch and a second hole, the switch can be selectively selected for lifting movement The first engaging portion extends upward from the first connecting structure through the second hole to protrude from the bottom plate. The button of claim 11, wherein the first lower end portion of the connecting rod member is a straight rod, the straight rod has a long shaft, and the movement direction of the first lower end portion of the connecting rod member is substantially Parallel to the long axis, the extending direction of the first engaging portion is perpendicular to the long axis, and the first engaging portion abuts against the upper surface of the straight rod. The button of claim 11, wherein the first lower end of the connecting rod is an L-shaped rod, The L-shaped rod has a straight rod and a cross rod, the straight rod has a long shaft, and the moving direction of the first lower end portion of the connecting rod member is substantially parallel to the long axis, and the extending direction of the first engaging portion Parallel to the long axis, the first engaging portion abuts against the upper surface of the cross bar. The button of claim 11, wherein the connecting rod member is substantially a U-shaped structure, the U-shaped structure further has a second lower end portion, the plastic material member further comprising: a second connecting structure, The frame extends toward the second lower end of the connecting rod; and a second engaging portion extends upward from the second connecting structure to protrude from the bottom plate, and defines a space between the second engaging portion and the bottom plate a second engaging space, the second lower end of the connecting rod is received in the second engaging space, and when the key cap performs the lifting movement, the connecting rod second end is in the second engaging Sliding in space. The button of claim 16, wherein the frame further has a first side and a second side, the first side being opposite the second side, the first connecting structure extending from the frame The first side of the second connecting structure extends from the second side of the frame.