TWI590275B - Key switch device capable of reducing noises during pressing process - Google Patents

Description

Button device capable of reducing pressing noise

The invention relates to a button device, in particular to a button device capable of reducing pressing noise.

Generally, the keyboard is provided with a plurality of button devices for the user to press to generate an input signal, so that the user can input characters, numbers, symbols, and the like by using a plurality of button devices. The conventional button device may be provided with a link bar for supporting the key cap of the button device to move up and down with respect to the bottom plate, and the conventional support rod and the bottom plate are usually shafts (shaft members)-holes (holes). Fit, and the shaft holes usually have a clearance fit. Therefore, when the button device is pressed, the above-mentioned shaft member and the hole wall of the hole often generate noise due to mutual impact when pressed.

Accordingly, the present invention provides a key device that can reduce pressing noise to solve the above problems.

In order to achieve the above object, the present invention provides a button device including a bottom plate, a keycap, a support rod, and a circuit board. The bottom plate has a plate body and a hole block. The plate body has a top surface, and the hole block has a top surface. Connecting to the top surface and having a pivot hole, the key cap is disposed above the top surface of the bottom plate, the support rod has a first rod portion and a second rod portion, the first rod portion is pivotally connected thereto a first cap portion is disposed on the top surface of the keyhole, and the circuit board is disposed on the top surface and includes a first layer structure, a first elastic tongue and a second elastic tongue. a first resilient tab extending in a direction substantially perpendicular to the second stem portion to the first layer structure, the second resilient tab extending in the first direction substantially perpendicular to the second stem portion The layer structure is opposite to the first elastic-resisting tongue piece, and the first elastic-resisting tongue piece and the second elastic-resisting tongue piece elastically support the second rod portion to abut the upper wall of the pivot hole.

In summary, when the support rod of the button device of the present invention is mounted on the bottom plate, the second rod portion of the support rod passes through the pivot hole of the hole holder, and the second rod portion is pressed against the first spring. The tongue and the second bullet abut the tongue, so that the first elastic tongue and the second elastic tongue are bent and deformed, and the first spring is deformed while the first elastic tongue and the second elastic spring are deformed. The tongue and the second elastically resisting tongue also elastically support the second rod portion of the support rod to abut the upper wall of the pivot hole to eliminate the clearance when the second rod portion cooperates with the pivot hole, thereby lowering the button The noise when the device is pressed. 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. Referring to FIG. 1 and FIG. 2, FIG. 1 is a schematic diagram of the appearance of a button device 1000 according to an embodiment of the present invention, and FIG. 2 is a schematic exploded view of a button device 1000 according to an embodiment of the present invention. As shown in FIG. 1 and FIG. 2, the button device 1000 includes a bottom plate 1, a keycap 2, a support rod 3, and a circuit board 4. The bottom plate 1 has a plate body 10 and a hole block 11, and the plate body 10 There is a top surface 101, and the socket 11 is connected to the top surface 101 and has a pivot hole 110. The keycap 2 is disposed above the top surface 101 of the plate body 10 of the bottom plate 1, and the support rod 3 is disposed between the bottom plate 1 and the keycap 2.

Please refer to FIG. 2 to FIG. 4 . FIG. 3 is a schematic view showing the support rod 3 mounted on the keycap 2 in another view according to an embodiment of the present invention. FIG. 4 is a schematic view showing the support rod 3 mounted on the bottom plate 1 according to an embodiment of the present invention. . As shown in FIG. 2 to FIG. 4 , the support rod 3 has a first rod portion 30 and a second rod portion 31 . The key cap 2 has a pivoting seat 20 , and the first rod portion 30 is pivotally connected to the key cap. The pivoting seat 20 and the second rod portion 31 are disposed through the pivot hole 110 of the socket 11 , whereby the support rod 3 can connect the keycap 2 and the bottom plate 1 . In addition, the button device 1000 further includes an elastic member 5 that abuts against the keycap 2. When the keycap 2 of the button device 1000 is pressed, the keycap 2 can move toward the bottom plate 1. At this time, the support rod 3 drives the keycap 2 to smoothly move downward toward the bottom plate 1, and the elastic member 5 is compressed to store an elastic position energy. When the keycap 2 of the button device 1000 is no longer pressed, the elastic member 5 releases the elastic potential energy to generate a restoring force to drive the keycap 2 to be reset, and the support rod 3 drives the keycap 2 to move smoothly away from the bottom plate 1 Movement, whereby the support rod 3 can drive the keycap 2 to move up and down relative to the bottom plate 1.

Referring to FIGS. 2 to 5, FIG. 5 is a schematic exploded view of the circuit board 4 according to an embodiment of the present invention. As shown in FIG. 2 to FIG. 5, the circuit board 4 is disposed on the top surface 101 of the board body 10 and includes a first layer structure 40, a second layer structure 41, and a third layer structure 42, the second layer. The structure 41 is coupled to the first layer structure 40. The third layer structure 42 is disposed on the top surface 101 of the board 10 of the bottom plate 1 and coupled to the second layer structure 41, that is, the first layer structure 40 is disposed on the second layer. On the structure 41, and the second layer structure 41 is located between the first layer structure 40 and the third layer structure 42, that is, the circuit board 4 is sequentially formed by the top surface 101 of the board body 10 by the third layer structure 42, The second layer structure 41 and the first layer structure 40 are arranged in sequence. Further, the first layer structure 40 corresponds to a first opening 401 formed with the sleeve hole 11 at the second rod portion 31. The first opening 401 has a first side 402 and a first side 402 Two sides 403.

In addition, the circuit board 4 further includes a first resilient tab 43 and a second resilient tab 44. The first resilient tab 43 protrudes from the first side 402 of the first opening 401. The sheet 44 protrudes from the second side 403 of the first opening 401 and is opposite to the first resilient tab 43. It is worth mentioning that an extending direction X1 of the pivot hole 110 of the socket 11 is parallel to the first side 402 and the second side 403, so that when the second rod portion 31 of the support rod 3 is passed through the socket When the hole 110 is pivoted, the second rod portion 31 is parallel to the first side 402 and the second side 403 (ie, parallel to the extending direction X1 of the pivot hole 110). In this embodiment, the first resilient tab 43 protrudes in a direction substantially perpendicular to the first side 402, and the second resilient tab 44 projects in a direction substantially perpendicular to the second lateral 403. Therefore, when the second rod portion 31 of the support rod 3 is disposed through the pivot hole 110 of the socket 11 , the first elastically protruding tongue 43 protruding from the first side 402 and the second protruding from the second side 403 The two resilient tabs 44 each extend in the first layer structure 40 in a direction substantially perpendicular to the second stem portion 31.

Further, a first end edge 430 is formed on a side of the first resilient tab 43 opposite the first side 402, and a second edge 440 is formed on a side of the second resilient tab 44 opposite the second side 403. An open line 45 is defined between the first end edge 430 and the second end edge 440, and one end of the cut line 45 is connected to the first opening 401. In addition, the first layer structure 40 is further formed with a hole 404 that communicates with the other end of the slit line 45. When the first resilient tab 43 and the second resilient tab 44 are unstressed, the first resilient tab 43 and the second resilient tab 44 are undeformed and are coplanar with the first layer 40, respectively. At this time, the first end edge 430 of the first resilient tab 43 abuts against the second end edge 440 of the second resilient tab 44 to form an incision line 45, and when the first resilient tab 43 is in contact with the second spring When the tongue piece 44 is pressed, the first elastic tongue piece 43 and the second elastic tongue piece 44 are respectively bent toward the first side 402 and the second side 403 of the first opening 401, and the cutting line 45 is cut at this time. The system can be expanded to form a channel. In this embodiment, the first opening 401 is substantially a rectangular opening, and the hole 404 is substantially a circular opening, but the invention is not limited thereto.

In addition, the second layer structure 41 is formed with a second opening 410. The second opening 410 covers the hole holder 11, the first elastic-engaging tongue 43 and the second elastic-resisting tongue 44, and the third layer structure 42 is formed correspondingly. A third opening 420 of the second opening 410, that is, the third opening 420 also covers the socket 11, the first resilient tab 43 and the second resilient tab 44, so when the first resilient tab 43 and the second When the elastic abutting tabs 44 are respectively bent toward the first side 402 and the second side 403 of the first opening 401, the first resilient tab 43 and the second resilient tab 44 can be smoothly bent into the second opening. 410 and the third opening 420, that is, the second opening 410 and the third opening 420 cover the structural design of the first resilient tab 43 and the second resilient tab 44 to ensure that the first resilient tab 43 and the second resilient projection When the first side 402 and the second side 403 of the first opening 401 are bent, the tongue 44 is not interfered by the structure of the circuit board 4 (ie, the second layer structure 41 and the third layer structure 42). The second opening 410 and the third opening 420 cover the structural design of the socket 11 so that the bottom plate 1 pivoting hole 110 protrudes from the circuit board 4 through the third opening 420, the second opening 410 and the first opening 401 in sequence, so that The second rod portion 31 of the support rod 3 can pass through the pivot hole 110 of the socket 11.

Please refer to FIG. 2 to FIG. 6 . FIG. 6 is a schematic cross-sectional view of a key device 1000 according to an embodiment of the present invention. As shown in FIG. 2 to FIG. 6 , when the support rod 3 is mounted on the bottom plate 1 , the second rod portion 31 of the support rod 3 is threaded through the pivot hole 110 of the socket 11 , and the second rod portion is at this time. 31 will be pressed against the first elastic tongue 43 and the second elastic tongue 44, so that the first elastic tongue 43 and the second elastic tongue 44 are directed to the first side 402 and the second opening 401 of the first opening 401 The side edge 403 is bent and deformed, and the second rod portion 31 can enter the first layer structure 40 via the slit line 45, and the first spring-loaded tongue piece 43 and the second spring-resistant tongue piece 44 are deformed simultaneously The second piece 31 of the support rod 3 is elastically supported by the second rod portion 31 of the support rod 3 to abut the upper wall of the pivot hole 110 to eliminate the cooperation of the second rod portion 31 with the pivot hole 110. The clearance further reduces the noise of the button device 1000 when pressed.

It is worth mentioning that the incision line 45 corresponds to the geometric center of the second rod portion 31 of the support rod 3, that is, the incision line 45 is aligned with the central axis of the second rod portion 31 of the support rod 3, so that the second rod portion 31 can be pressed against the first bullet abutting tab 43 and the second resilient tab 44. In this way, the first elastic-engaging tongue piece 43 and the second elastic-resisting tongue piece 44 can be uniformly deformed to provide a uniform supporting force of the second rod portion 31 of the support rod 3.

Compared with the prior art, when the support rod of the button device of the present invention is mounted on the bottom plate, the second rod portion of the support rod passes through the pivot hole of the hole holder, and the second rod portion is pressed against the first bullet. The first piece and the second piece of the tongue are bent and deformed, and the first elastic piece and the second elastic piece are deformed by the tongue, and the first bullet is simultaneously deformed. The second piece of the support rod is elastically supported by the second piece of the support rod to abut the upper wall of the pivot hole to eliminate the clearance when the second rod portion is engaged with the pivot hole, thereby reducing the clearance The noise of the button device when pressed. 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‧‧‧ button device
1‧‧‧floor
10‧‧‧ board
101‧‧‧ top surface
11‧‧‧ hole seat
110‧‧‧ pivot hole
2‧‧‧Key Cap
20‧‧‧ pivoting seat
3‧‧‧Support rod
30‧‧‧First pole
31‧‧‧Second pole
4‧‧‧ boards
40‧‧‧First layer structure
401‧‧‧ first opening
402‧‧‧First side
403‧‧‧ second side
404‧‧‧ hole
41‧‧‧Second layer structure
410‧‧‧second opening
42‧‧‧Tertiary structure
420‧‧‧ third opening
43‧‧‧The first bullet is on the tongue
430‧‧‧First end edge
44‧‧‧Second bullet
440‧‧‧second edge
45‧‧‧cut line
X1‧‧‧ extending direction

FIG. 1 is a schematic diagram of the appearance of a button device according to an embodiment of the present invention. FIG. 2 is a schematic exploded view of a button device according to an embodiment of the present invention. FIG. 3 is a schematic view showing the support rod mounted on the keycap in another view according to an embodiment of the present invention. Figure 4 is a schematic view showing the support rod mounted on the bottom plate in the embodiment of the present invention. FIG. 5 is a schematic exploded view of a circuit board according to an embodiment of the present invention. Figure 6 is a cross-sectional view showing a key device according to an embodiment of the present invention.

1000‧‧‧ button device

1‧‧‧floor

10‧‧‧ board

101‧‧‧ top surface

11‧‧‧ hole seat

110‧‧‧ pivot hole

2‧‧‧Key Cap

20‧‧‧ pivoting seat

3‧‧‧Support rod

30‧‧‧First pole

31‧‧‧Second pole

4‧‧‧ boards

40‧‧‧First layer structure

41‧‧‧Second layer structure

42‧‧‧Tertiary structure

43‧‧‧The first bullet is on the tongue

Claims (7)

A button device for reducing pressing noise, comprising: a bottom plate having a plate body and a hole seat, the plate body having a top surface, the hole block being connected to the top surface and having a pivot hole; a key cap a first rod portion and a second rod portion, the first rod portion is pivotally connected to the key cap, and the second rod portion is disposed at the pivotal portion of the bottom plate. And a circuit board disposed on the top surface, the circuit board includes: a first layer structure, wherein a first opening corresponding to the socket is formed on the second rod portion, The first opening has a first side and a second side opposite the first side; a first resilient tab extending in the first layer structure in a direction substantially perpendicular to the second portion And protruding from the first side edge, the first elastic-resisting tongue forms a first end with respect to one side of the first side; and a second elastic-resistant tongue is substantially perpendicular to the second shank The direction extends to the first layer structure and is opposite to the first elastic-resisting tongue, and the first elastic-resisting tongue and the second elastic-resisting tongue are elastically supported The second rod portion abuts against the upper wall of the pivot hole, and the second elastic member has a second end edge opposite to the second side of the second side, the first end edge and the second end edge An open line is defined, and one end of the cut line is connected to the first opening, and the second rod portion enters the first layer structure via the slit line. The button device of claim 1, wherein the first side edge and the second side edge are parallel to the second bar portion, and the first spring-resistant tongue piece is in a direction substantially perpendicular to the first side edge Projecting, and the second resilient tab protrudes in a direction substantially perpendicular to the second side. The button device of claim 1, wherein the first layer structure is further formed with a hole that communicates with the other end of the slit line. The button device of claim 3, wherein the first opening is substantially a rectangular opening, and the hole is substantially a circular opening. The button device of claim 1, wherein the slit line corresponds to a geometric center of the second stem. The key device of claim 1, wherein the circuit board further comprises: a second layer structure coupled to the first layer structure, the second layer structure forming a second opening, the second opening covering the first A bullet strikes the tongue and the second bullet strikes the tongue. The key device of claim 6, wherein the circuit board further comprises: a third layer structure disposed on the top surface of the board body and coupled to the second layer structure, the third layer structure is formed And a third opening corresponding to the second opening, wherein the first layer structure is disposed on the second layer structure, and the second layer structure is located between the first layer structure and the third layer structure.