JPH0981291A - Key top - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to avoid the application of a hard shock to a finger with a long nail even at the time of depressing a key with the finger. SOLUTION: A top part 1 formed by a soft material is fixed on a base part 2 formed by a hard material so that the whole shape of a key top becomes like a trapezoidal shape and a solid recessed part 3 is formed on a part touched with a finger tip on the depth of the upper face of the top part 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key top for a keyboard used as an input device of an information processing device.

[0002]

2. Description of the Related Art A conventional key top for a keyboard used as an input device of an information processing apparatus is hard as disclosed in Japanese Utility Model Laid-Open No. 2-92524 in order to reduce the impact applied to a fingertip when a key is pressed. There is one in which a top made of a soft material is fixed on a stand made of the above material to form a predetermined shape.

FIG. 4 is a perspective view showing an example of such a conventional key top.

The key top 20 shown in FIG. 4 has a top portion 21 made of soft rubber fixed on a base portion 22 made of hard plastic, and has a predetermined shape as a whole.
The part touched by the finger on the upper surface of is flat.

[0005]

The conventional key top as described above has the effect of mitigating the impact at the time of keystroke when the finger nail is short, but when the finger nail is extended for a long time,
Since the tip of the nail comes into direct contact with the key top and the finger itself comes into contact with the key top only after that, there is the problem that a large impact is applied to the nail and a sufficient cushioning effect cannot be obtained. ing.

[0006]

The key top of the present invention comprises:
A key top for a keyboard that has a predetermined shape by fixing a top made of a soft material on a base made of a hard material, in which a three-dimensional recess is provided at the back of the top. In particular, a three-dimensional concave portion surrounded by a plane or a three-dimensional concave portion formed by a smooth curved surface is provided.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a first embodiment of the present invention, and FIG. 2 is a side view showing a keystroke state of the embodiment of FIG.

The key top of FIG. 1 has a trapezoidal shape in which a top 1 made of a soft material such as soft rubber is fixed on a base 2 made of a hard material such as hard plastic. A three-dimensional recessed portion 3 surrounded by a plane is provided at a portion of the top surface of the top portion 1 that is touched by a fingertip at the back (in the drawing, the back is drawn toward you).

When the key top thus constructed is tapped, as shown in FIG. 2, the tip of the claw 4 is inserted into the recess 3 even if the finger 5 is extended to extend the claw 4 as shown in FIG. Can avoid touching the key top directly. Therefore, the belly part of the finger 5 comes into contact with the key top, so that the nail 4
It is possible to avoid a large impact on. Finger 5
The key top and the key top are in contact with each other over a large area, and since the contact portion is the top portion 1 formed of a soft material, the impact applied to the finger 5 is small.

FIG. 3 is a perspective view showing a second embodiment of the present invention.

The structure of the key top of FIG. 3 is almost the same as the structure of the key top of FIG. 1, except for the shape of the recess. That is, a top portion 11 formed of a soft material such as soft rubber is fixed on a base portion 12 formed of a hard material such as hard plastic to form a trapezoidal shape as a whole, and a deep portion of the top surface of the top portion 11 (see FIG. Then, the inner side is drawn toward you), and the three-dimensional recessed portion 13 formed by the smooth curved surface is formed.
Is provided.

The operation and effect of this key top is the same as that of the key top of FIG.

[0014]

As described above, according to the key top of the present invention, the top formed of the soft material is fixed on the base formed of the hard material to form a trapezoidal shape, and the top of the top is deep. By providing a three-dimensional recessed part at the part where the fingertip of touches, even if the finger is extended with a long finger, it is possible to prevent the claw from entering the recess and directly contacting the tip of the claw with the key top. Therefore, there is an effect that a large impact can be avoided.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a side view showing a keystroke state of the embodiment of FIG.

FIG. 3 is a perspective view showing a second embodiment of the present invention.

FIG. 4 is a perspective view showing an example of a conventional key top.

[Explanation of symbols]

 1 ・ 21 ・ 21 Top 2 ・ 12 ・ 22 Stand 3 ・ 13 Recessed 4 Claws 5 Fingers 20 Key tops

Claims (3)

[Claims] 1. A key top for a keyboard in which a top made of a soft material is fixed on a base made of a hard material to have a predetermined shape, and a three-dimensional recess is formed in a deep portion of the top. Key top characterized by having a section. 2. The key top according to claim 1, wherein a three-dimensional recessed portion surrounded by a plane is provided. 3. The key top according to claim 1, wherein a three-dimensional concave portion formed by a smoothly curved surface is provided.