JP2919203B2 - Keyboard switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard switch widely used as an information processing apparatus, and more particularly to a keyboard switch mechanism.

[0002]

2. Description of the Related Art FIG. 4A is a plan view of a mechanical portion showing an example of a conventional keyboard switch, and FIG. 4B is a sectional view taken along the line BB in FIG.

As shown in FIG. 4B, the mechanical portion of the keyboard switch of the prior art is composed of a key top 100, a resin housing 102, and a rubber cup 103.

The key top 100 has a sliding shaft 101,
The sliding structure is formed with the housing 102. The sliding structure plays a role of preventing play at the start of pressing the keytop, preventing the keytop 100 from coming off when pressed, and preventing the keytop 100 from coming off.

To prevent rattling, a predetermined overlap 110 is secured between the sliding shaft 101 and the housing 102 that receives the sliding shaft. The amount obtained by subtracting the overlap 110 from the housing height 111 is the stroke amount 112 of the keyboard switch.

[0006]

In this conventional keyboard, it is necessary to secure an overlap in addition to the stroke amount, and it is difficult to reduce the height.

In addition, since the sliding structure is adopted, there is a problem that the dust is not completely protected and once the dust enters the sliding portion, the slidability is remarkably reduced.

Further, since it is composed of a key top, a housing, and a rubber cup, there is a problem that simplification of assembly and weight reduction are difficult.

[0009]

The keyboard switch according to the present invention solving the problem that means for the ## presses comprising a key top and the rubber sheet, the keyboard switch comprise a mechanism of the return, the rubber sheet is a rubber cup, the base of the rubber cup hydrofluoric the tip extends obliquely upward outwardly from
And at least two key top supporting portion to have a click hole, said key top has a <br/> hook portion to be inserted engaging into a hole for the hook.

[0010]

Next, the present invention will be described with reference to the drawings. FIG. 1A is a plan view of a mechanism showing an embodiment of the keyboard switch of the present invention, FIG. 1B is a cross-sectional view taken along the line AA in FIG. 1A, and FIG. 2 is a rubber sheet in this embodiment. It is a perspective view of.

As shown in FIG. 2, the rubber sheet 10 of the keyboard switch according to the present embodiment includes a rubber cup 11 and a key top support 12 extending obliquely upward from the base of the rubber cup 11 to the outside. I have.

[0012] At the tip of the key top support portion 12, there is provided a hook hole 13 for engaging with the hook portion of the key top 20. The rubber cup 11 functions as a spring when the key top 20 is pressed and returned.

As shown in FIG. 1, the key top support portion 12 is connected to a key top 20 by a hook portion 21. That is, the hook portion 21 of the key top 20 is inserted and engaged with the hook hole of the key top support portion 12. The key top support section 12 has a function of preventing play at the start of pressing the key top 20 and preventing lateral displacement during pressing.

FIG. 3 is a diagram showing a pressed state of the key top in FIG.

First, as shown in FIG.
If the direction of the key top 20 is pressed by a finger 30 of the key top supporting portion 12a in the compression direction, the key top supporting portion 12
b is deformed in the tensile direction and resists, so key top 2
Zero play is prevented.

Also, as shown in FIG. 3B, when the key top support portion 12b is pressed in the direction of the arrow 51, the key top support portion 12b serves as a horizontal support, so that the lateral displacement of the key top 20 is suppressed to a predetermined value. Can be.

Further, as shown in FIG. 3 (c), the key top 20 can be further depressed in the direction of arrow 51 to deform the rubber cup 11 to the lowest position.

Therefore, according to the present embodiment, the rubber sheet 10 and the key top 20 can play the same role as the conventional sliding structure.

In this embodiment, since a sliding structure is not used, it is resistant to dust.

Further, the overlap portion 110 shown in FIG.
Since only the stroke amount 112 need not be considered, it is possible to reduce the height.

Further, the housing 102 shown in FIG.
Since no is used, simplification and weight reduction of assembly can be achieved.

[0022]

As described above, according to the present invention, since the rubber cup of the keyboard switch and the key top support for preventing the lateral displacement and the play are provided, the sliding can be performed without using the housing in the conventional keyboard switch. This has the effect that it can play a role equivalent to the dynamic structure.

Further, since there is no sliding portion, not only is it resistant to dust, but also only the stroke amount of the keytop is provided, which has the effect that the height can be reduced.

Further, since the housing is not used, there is an effect that the assembly of the keyboard switch can be simplified and the weight can be reduced.

[Brief description of the drawings]

FIG. 1A is a plan view of a mechanism showing an embodiment of a keyboard switch according to the present invention, and FIG. 1B is a cross-sectional view taken along the line AA in FIG.

FIG. 2 is a perspective view of a rubber sheet according to the embodiment.

FIG. 3 is a diagram showing a pressed state of a key top in FIG. 1;

FIG. 4A is a plan view of a mechanism showing an example of a conventional keyboard switch, and FIG. 4B is a BB line in FIG.
It is sectional drawing by a line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rubber sheet 11, 103 Rubber cup 12, 12a, 12b Key top support part 13 Hook hole 20, 100 Key top 21 Hook part 30 Finger 101 Sliding shaft 102 Housing 110 Overlap 111 Housing height 112 Stroke amount

Claims (1)

(57) [Claims] 1. A pressed consisting of key top and the rubber sheet, the keyboard switch comprise a mechanism of the return, the rubber sheet is a rubber cup, extends obliquely upward toward the outside from the base of the rubber cup tip
And at least two key top supporting portion to have the holes for hook in, the key top is inserted into the hole for the hook
A keyboard switch comprising a hook portion to be engaged.