JPH0129936Y2 - - Google Patents

Description

[Detailed Description of the Invention] (A) Technical Field of the Invention The present invention relates to an improvement in the structure of a keyboard suitable for use as an input means for display devices and the like.

(B) Background of the Technology In recent years, with the rapid development of information processing devices, research and development on Japanese language processing systems has been actively conducted.

(C) Prior Art and Problems Conventionally, in a keyboard, which is an input means for a commonly used display device, etc., a switch is fixed on a base.

For this reason, it is common practice to change the shape of the key tops in order to make it more natural for each operator to touch the keys when using the keyboard.

For example, the slope type shown in Figure 1a, the slope type shown in Figure 1b
There are the slope culture type shown in FIG. 1, the step culture type shown in FIG. 1c, and the step culture type shown in FIG. 1d.

However, if this problem is to be solved by changing the shape of the key top, the specifications of the keyboard will be determined at the time of purchasing the device.

For this reason, operators may work in shifts,
It was completely meaningless when used by an unspecified number of people.

(D) Purpose of the invention In view of the above-mentioned drawbacks, the purpose of the present invention is to provide a keyboard with a simple structure in which the shape of the key top surface can be varied.

(E) Structure of the invention The purpose of this invention is to provide a first and second base frame whose positions are different in the height direction, a shaft at the top thereof, and a structure capable of rotating around the shaft. The first key switch is provided on the first base frame so that the first key switch is provided on the first base frame;
a second key switch provided on the base frame of the key switch; and steps are provided in succession at a predetermined interval between the first and second key switches, and a shaft is provided on the upper part of the key switch. a plurality of key switches; a first pantograph-like connecting means provided to connect the plurality of key switches between respective shafts, and supporting the plurality of key switches so that the distance between the key switches can be varied; a second pantograph-like connecting means for connecting two key switches at their respective lower portions and supporting the key switches so that the distance between the key switches can be varied; , a means for moving a lower portion of the key switch and holding the key switch in that position;
means for expanding and contracting the second pantograph-like connecting means by varying the interval between the key switches at the lower part thereof; and a key switch disposed near the center of the plurality of key switches;
This is achieved by providing a keyboard characterized by comprising means for moving it up and down and holding it in that position.

(F) Embodiments of the invention Hereinafter, embodiments of the keyboard according to the invention will be described in detail with reference to the drawings.

First, considering the state of the key top surface as shown in FIGS. 1a and 1c, it is possible to continuously change the state of the key top surface by using a simple ladder-type link mechanism.

In other words, by moving one link of the link mechanism as shown in FIG. 2 in the direction of the arrow (indicated by symbol A in the figure), the slope type shown in FIG.
It can be of the step type shown in FIG. 1c.

Next, when considering the warpage of the entire keytop surface,
It is sufficient to provide the entire link mechanism with the ability to expand and contract evenly.

FIG. 3 shows an embodiment of the present invention.

In the figure, 1 is a key top, 2 is a key switch, 3 is a hard case that houses and fixes a set of key switches in a horizontal row when viewed from the front of the keyboard, 4,
8 is a pin that fixes the pantograph type leaf spring 6 to the key switch 2 and the base frame 18 of the keyboard; 5 and 9 are pins that fix the leaf spring 16 to the key switch 2; 7;
are pins for fixing the leaf spring 6 to the key switch 2, and 5', 7', and 9' are pins 5, 7, and 9', respectively.
The engagement hole connected to 9 is shown. 10 is a member through which a screw 17 passes and is fixed to the keyboard body; 11
12 is a knob for rotating the screw 17 and moving the pin 9 in the direction of the arrow shown by symbol B; 12 is a member through which the threaded rod 19 passes and is fixed to the pin 9; 2;
0 is a member to which the tip of the threaded rod 19 is fixed and is fixed to the pin 5, 21 is a knob that rotates the threaded rod 19 to expand and contract the leaf spring 16, and 13 is an engagement hole at the tip that engages with the pin 7. Screw together the screw 22 having a diameter of 7' and attach the frame 15 through the spacer 14.
Shows the dial supported by.

In the configuration as described above, the variable state of the key top surface will be explained.

FIG. 3 shows a case where the key top surface is in a step type state, and changes from this state will be explained.

First, by turning the knob 11, the pin 9 is set to the third position.
Move to the left in the diagram. At this time, since the distance between pin 5 and pin 9 is constant due to the threaded rod 19, the lower part of the hard case 3 of the key switch 2 is connected to the pin 4,
8, and the key top surface can be of a slope type.

Next, in this state, turn the knob 21 to move the threaded rod 19 in the direction of the arrow shown by symbol E in the figure. At this time, the member 12 does not move because it is fixed to the pin 9, and only the member 20 at the tip of the threaded rod 19 moves.

Therefore, the keytop surface faces inward and has a slope culture type as shown in FIG. 1b.

In addition, in the step type state shown in Fig. 3, turn the dial 13 and tighten the screw 22 with the symbol C in the figure.
Move it in the direction of the arrow shown. At this time, pin 7
Since the leaf spring 6 is engaged with the engagement hole 7' of the screw 22, the leaf spring 6 is extended, the key switch 2 to which the pin 7 is attached moves downward, and the key top surface is bent.

Therefore, the keytop surface has a step culture type as shown in FIG. 1d.

There are two pairs of adjustment mechanisms on the left and right, each of which is made to work together.

The knobs 11, 13, and 21 described here and the adjustment mechanisms attached thereto are not the main focus of the present invention, and other adjustment mechanisms (wire type, gear type, lever type, etc.) may be substituted.

(G) Effects of the invention As explained above, according to the invention, key top surfaces of various shapes can be obtained with one keyboard, and the practical effects are great.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining the state of the key top surface, FIG. 2 is an explanatory diagram for explaining the present invention, and FIG. 3 is a schematic diagram for explaining one embodiment of the present invention. In the figure, 1 is a key top, 2 is a key switch, 3 is a hard case, 4, 5, 7, 8, 9 are pins, 6, 16 are leaf springs, 10, 12,
20 is a member, 11 and 21 are knobs, 13 is a dial, 14 is a spacer, 15 is a frame, 17, 2
2 is a screw, 18 is a base frame, and 19 is a threaded rod.

Claims (1)

[Claims for Utility Model Registration] First and second base frames provided at different positions in the height direction; a shaft at the top thereof; a first key switch provided on the first base frame; a second key switch provided on the second base frame with a shaft on the top thereof and rotatable around the shaft; A plurality of key switches are arranged in succession with steps at a predetermined interval between the first and second key switches, and each of the key switches has a shaft at the top; a first pantograph-shaped connecting means provided to connect the respective shafts and to support the distance between each key switch so as to be variable; a second pantograph-like connecting means for supporting the key switches so that the distance between each key switch can be varied; a lower part of the key switch is moved so as to rotate the key switch about the axis;
and a means for holding the first and second key switches in that position, the second pantograph-like coupling means being coupled at the lower part of the first and second keyswitches and allowing the distance between the first and second keyswitches to be varied at the lower part. A keyboard comprising: means for expanding and contracting; and means for vertically moving a key switch disposed near the center of the plurality of key switches and holding it in that position.