KR19990012021A - Keyboard switch - Google Patents

Abstract

The present invention relates to a keyboard consisting of first and second elements, wherein the first and second elements are engaged with each other alternately and support a keycap at an upper end thereof. Corresponding pressing boards are provided at the inner edges of the first and second elements, respectively. Its outer edges are provided with corresponding protruding axes and slots to allow for limited movement. Due to the limited movement of the keycaps, when pressed in any position, the keycaps are moved down by the shortest distance that can cause electrical contact of the keycaps in a very balanced and stable state, and when the keycaps are released, the keyseat Is returned to its original position by the elastic rubber mounted in the cylinder).

Description

Keyboard switch

The present invention relates to a keyboard switch, in particular a switch having a corresponding pressing board for actuating the protruding axis of the first element and the slot of the second element. These two elements are located between the keyseat and the keycap and alternately engage. These keyboard switches provide a stable and balanced downward movement of the keycaps.

Conventional keyboard switches have a cylindrical rod that extends from the inner edge of the keycap to allow for flexible electrical contact. Due to structural constraints, when the contact surface between the bottom seat and the cylindrical rod is small, the cap is inclined easily and thus the cap is not stable. As a result, a wider contact surface is needed to balance the keycaps. However, users will increasingly need thinner, smaller computers. Increasing the travel surface of the contact surface and the cap affects the thickness of the keyboard. This does not comply with the requirements of small computers. In addition, the stability of the downward motion will not be improved. As a result, it is necessary to improve the structure of the keyboard switch while shortening the downward movement of the keycap.

In another prior art, in order to make the lower movement of the keycap smaller and shorter, at the lower end of the keycap, a support frame for supporting the cap is used. For example, as shown in FIGS. 6 and 7, a pair of frames A, B are used between both to support the cap C and the sheet D. FIG. Frames A and B are interconnected at pivot F. When the frames A and B move, the caps C are provided with a gap H and the seats D with a gap G so that the ends of the frames A and B slide. When the cap C is pushed down, the downward movement distance of the cap C until there is electrical contact at the bottom thereof is shortened. However, in this prior art, when the cap is pressed in its other position, the cap is tilted, resulting in an inclined downward motion. Thus, the electrical contact of the keys is also poor.

In yet another prior art shown in FIG. 8, a pair of rectangular frames A, B are pivotally positioned on the keysheet D. FIG. The slide key E is mounted on the upper part of the frame. Slide key E is used to support the keycap. You get one switch like this. In this prior art, the slide key E is used to stabilize the sliding motion. However, due to the structure of frames A and B, an unbalanced downward motion occurs when the keycap is pressed at its side or corner.

SUMMARY OF THE INVENTION An object of the present invention is to provide an improved keyboard switch composed of first and second elements, wherein the first and second elements alternately engage each other, and a corresponding pressing plate for operating each element to each other. It is to provide an improved keyboard switch, which provides a stable and balanced downward movement of the keycap.

It is a further object of the present invention to provide an improved keyboard switch wherein the stable and balanced downward movement of the keycaps causes electrical contact of the key switch and prevents poor electrical contact of the key switch.

In order to clearly understand the nature of the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is an exploded perspective view of a keyboard switch according to the present invention.

2 is a perspective view of the present invention.

3 is a cross-sectional view of the keybod switch before the keycap is pushed down.

4 is a cross-sectional view of the keyboard switch after the keycap is pushed down and the elastic pad is in electrical contact.

5 is an exploded perspective view of another preferred embodiment of the present invention.

6 is a perspective view of a keyboard switch according to the prior art.

7 is a cross-sectional view of FIG. 6.

8 is an exploded view of another keyboard switch according to the prior art.

As shown in FIG. 1, the keyboard switch 10 of the present invention is composed of a first element 20 and a second element 30, which are located on the keyboard sheet 11 and are engaged with each other alternately, and the keycap 12 is the first element 20 and It is supported on top of the second element 30.

The keysheet 11 includes a fixing slot 13 located at four corners of the seat 11 so as to engage with the pivot axis 23 of the first element 20 and the pivot axis 33 of the second element 30. In the center of the keysheet 11, there is provided a slot 14 for placing the elastic rubber pad 16 (shown in FIGS. 3 and 4) in electrical contact.

The keycap 12 comprises a fixing slot 15 provided substantially at the inner edges of the four corners of the cap 12 for engaging the horizontal axis 26 of the first element 20 and the horizontal axis 35 of the second element 30. When the first element 20 and the second element 30 are engaged with the fastening slot 15 and the fastening slot 13, the elements 20, 30 have a stable and balanced movement (shown in FIG. 2). Strong support at the top.

The first element 20 consists of a substantially open C-shaped body 21. Body 21 has two open ends with two protruding extensions 22. At the end of the extension 22 is provided a pad pad 23 for engaging the fixing slot 13 of the seat 11. At the inner edge of the end of the body 21, a recess 24 is provided which is adapted to the projecting axis 33 of the second element 30. At the inner edge of the body 21 a conical pressing board 25 is provided, which corresponds to the pressing board 34 of the second element 30. At the center of the outer edge of the body 21, a horizontal axis 26 is provided for engaging the fixing slot 15 of the cap 12.

The structure of the second element 30 is substantially similar to the first element 20. The second element 30 consists of an open C-shaped body 31. The body 31 has two open ends with two pivoting ends 32 for engaging the fixing slot 13 of the seat 11. At the inner edge of the body 31, a projection axis 33 is provided, which corresponds to two slots 24 of the first element 20. In the center of the inner edge, a pressing board 34 is provided, which corresponds to the pressing board 25 of the first element. At the outer edge of the body 31, a horizontal axis 335 is provided for engaging the fixing slot 15 of the cap 12.

The width of the second element 30 is smaller than the width of the first element 20. In the engaged state, the body 31 of the second element 30 lies in the space provided by the C-shaped body 21 of the first element 20. In this embodiment, the pressing board 25 of the first element is pressed against the pressing board 34 of the second element 30 and the protruding axis 33 of the second element 30 has a mutually limited state between the first and second elements 20, 30. This creates a crimping condition (as shown in FIG. 2) that can be formed in the substrate.

As shown in FIGS. 2 to 4, when the position of the cap 12 is pressed, the vertical movement of the cap 12 is stable and well balanced due to the mutual restriction action of the first element 20 and the second element 30. It is exercised. That is, when the cap 12 is pressed to the center, the first element 20 and the second element 30 are moved down stably and in a balanced manner by the fact that the two horizontal axes 26 and 35 are pressed in a balanced manner, and the pressing board 34 The elastic rubber pad 16 is pressed to connect with the electrical contact. If the position under pressure is the transverse side or one corner of the keycap 12, since the horizontal axis 26 is pressed, the pressing board 25 is in contact with the pressing board 34 of the second element 30, and thus the first element 20 and the second element. The 30 can settle down in a stable and well balanced state. Since the crimped end causes the horizontal axis 35 to move the protruding axis 33 and the slot 24 of the first element 20 is triggered, the first cap 20 and the second element 30 are also stable and balanced downward movement, so the keycap 12 never It does not tilt to one side.

When the keycap 12 is released, the elastic rubber pad 16 in the slot 14 of the key sheet 11 lifts up the first element 20 and the second element 30, so that the keycap 12 returns stably to its original position.

In Fig. 5, another preferred embodiment of the present invention is shown. In this preferred embodiment, the first and second elements of the rectangle do not affect their function.

As shown in FIG. 5, the keyboard switch 40 includes a key sheet 41 having a horizontal slot 42 and a slot 44. Blocking late 43 is provided at the edge of slot 44. Slots 42 and 44 mesh with the horizontal axis 52 of the first element 50 and the horizontal axis 62 of the second element 60, respectively.

The first element 50 consists of a rectangular body 51 provided at its lower end with a horizontal axis 52 so as to engage with the slot 44 of the key sheet 41. The blocking plate 43 is used to position the horizontal axis 52. The upper end of the body 51 is provided with a horizontal axis 53 which engages with a fixing slot (not shown) of the keycap. On the two transverse sides of the body 51, slots 54 are respectively provided which are suitable for the projecting axis 64 of the second element 60. At the upper end of the horizontal axis 53, a projecting pressing board 55 is provided for pressing the board 65 of the second element 60.

The structure of the second element 60 is substantially similar to the structure of the first element 50. The second element 60 has a rectangular body 61. At the lower end of the body 61 is provided a horizontal axis 62 which engages with the horizontal fixing slot 42 provided in the keysheet 41. At the upper end of the body 61, a horizontal axis 63 is provided which engages with the fixing slot in the keycap. The two transverse sides of the body 61 are provided with an outwardly projecting axis 64. The axis 64 is adapted to slot 54 of the first element 50. The base end of the horizontal axis 62 is adapted to the slot 54 of the first element 50. At the base end of the horizontal axis 62, there is provided a pressing board 65 which protrudes in order to block the bottom end of the board 55 of the first element 50.

In a preferred embodiment, the width of the body 61 of the second element 60 is slightly smaller than the width of the body 51 of the first element 50. In the engaged state, the body 61 of the second element 60 may be provided inside the body 51 of the first element 50. Thus, the pressing board 55 of the first element 50 is pressed against the board 65 of the second element 60, and since the protruding axis 64 on the transverse side of the body 61 fits into the slot 54 of the body 51, the first element 50 and the second Element 60 is interconnected. This provides a stable and balanced downward motion when the keycap is pressed.

The present invention relates to a keyboard consisting of first and second elements, wherein the first and second elements engage alternately with each other and support a keycap at their upper end. Corresponding pressing boards are provided at the inner edges of the first and second elements, respectively. Its outer edges are provided with corresponding protruding axes and slots to allow for limited movement. If the keycap is pushed down in any position, by limited movement, the keycap will move down by a minimum distance to cause electrical contact of the keycap, with good balance and stability, and the structure of the first and second elements From the point of view, it can be assembled very conveniently and easily without being damaged easily. Thus, in the event of element breakage, new elements can be quickly replaced.

Although the preferred embodiment of the present invention has been described above, it is understood that various modifications are possible without departing from the spirit and scope of the present invention. Accordingly, the scope of the present invention may be limited only by the following claims.

Claims (6)

A keyboard switch comprising a keycap, a first element, a second element, and a keyseat, wherein the first element and the second element are engaged with each other in correspondence with the pressing of the keycap, and the element And the first and second elements move stably up and down since the mutual coupling of is formed between the keycap and the keysheet. The method of claim 1, wherein the first element is a C-shaped body having an open end provided with a pair of protruding extensions, Each end having a pivot end that engages a corresponding slot in the keysheet; A pair of slots formed in the C-shaped body for combination with the protruding shaft provided in the second element; A conical pressing board provided inside of the first element, corresponding to the pressing board of the second element; And And a horizontal axis provided at an outer edge of the second element pressing board to engage the engagement slot of the keycap. The body of claim 1, wherein the second element is a C-shaped body having a pair of extensions provided with pivotal ends engaged with the securing slots in the keysheet, the central portion of the body having a conical shape of the first element. Keyboard switch provided with a pressing board and a corresponding pressing board. 2. A rectangular body according to claim 1, wherein said first element is a rectangular body having a base end provided with a horizontal axis for engaging said retaining slot of said keysheet, said upper end of said body having a horizontal axis for engaging said retaining slot of said keycap. And a fixing slot for engaging the protruding shaft end of the second element on two sides of the body, and the pressing board corresponding to the pressing board of the second element on the upper shaft end of the body. Keyboard switch provided. 2. The second element of claim 1, wherein the second element comprises a rectangular body having a base end provided with a horizontal axis for engaging the fixing slot of the keysheet, wherein the upper end of the body has a horizontal axis for engaging with the fixing slot of the keycap. Is provided, two sides of the body are provided with a protruding shaft end for engaging the fixing slot of the first element, and the base shaft end of the body is pressed for the blocking of the base end of the first element. Keyboard switch with board provided. The pressing element of the first element as claimed in claim 1, wherein the width of the second element is smaller than the width of the first element and the second element is located within the width of the first element. The pressing element of the second element and the protruding axis of the second element is pressed against the fixing slot of the first element such that the first element and the second element are interconnected.