JPH0621145Y2 - Pushbutton switch key stopper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a key stopper for holding a push button switch in an unusable state by making it impossible to depress a key top of a push button switch of a keyboard device or the like.

(Prior Art) Conventionally, when a user does not need a function of a keyboard device or requests to add a new function, the keyboard device is conventionally designed and manufactured according to the user. . However, as the number of users increases, it is necessary to manufacture various types of keyboard devices correspondingly, resulting in an increase in manufacturing cost and an increase in manufacturing line and quality control man-hours.

Various functions have been added to the keyboard device in advance so as to correspond to a plurality of user specifications, and the keyboard device is provided with only push button switches required for each user. However, even in this case, since the arrangement of the push button switches is different for each user, the same problem occurs.

Therefore, recently, a keyboard device to which various functions are added in advance is provided with push button switches corresponding to all the functions, and only the push button switches corresponding to unnecessary functions are held disabled by a key stopper. .

FIG. 5 is a perspective view showing a conventional key stopper together with a push button switch, and FIG. 6 is a view showing its mounted state.
In these drawings, reference numeral 1 denotes a push button switch, and the push button switch 1 includes a key switch 2 having a contact mechanism, a key lever 3 that moves downward in the key switch 2, and a key top 4 fixed on the key lever 3. When the key top 4 is pushed down and the key lever 3 is moved downward, the contact mechanism of the key switch 2 is closed and key information is input to the keyboard body.

On the other hand, the conventional key stopper 5 is provided so as to face a U-shaped main body 5A formed of a leaf spring, bent portions 5a and 5a formed at both ends of the main body 5A, and an inner wall of the main body 5A. And projections 5b and 5b that are formed.

In the key stopper 5 having such a structure, the main body 5A is inserted between the key top 4 and the key switch 2 so as to sandwich the key lever 3, and the projections 5b and 5b are brought into contact with both surfaces of the key lever 3 to push the switch button 1 Be attached to. Therefore, since the lower surface of the key top 4 contacts the upper end surface of the main body 5A, the key top 4 cannot be pushed down. Therefore, the push button switch 1 is held in the unusable state. still,
The main body 5A is opened through the bent portions 5a, 5a, and the projection 5b,
The key stopper 5 can be removed from the push button switch 1 by separating 5b from the key lever 3.

By the way, in the push button switch 1 which has been taken into consideration, a large gap 1 is set between the key top 4 and the key switch 2, so that even if the key top 4 is slightly pushed down by an erroneous operation, the key information is input to the keyboard body. It is considered so that it will not occur.

However, recently, the arrangement of the push button switches of the keyboard device has been determined by the DIN standard as follows.
That is, FIG. 7 shows a keyboard device based on the DIN standard, and the push button switches 6 arranged in the row C are regulated so that the height l'of the key top is 30 mm or less with respect to the mounting surface of the desk. ing. This is ergonomically determined.

FIG. 8 (A) shows a push button switch 7 that has been put into practical use in order to satisfy the DIN standard, and FIG. 8 (B) shows the pushed state of the push button switch 7. The push button switch 7 comprises a key switch 7a, a key lever 7b and a key top 7c, and the distance between the lower surface of the key top 7c and the upper surface of the key switch 7a is set to be extremely small. When the key top 7c is pushed down with a finger, the key top 7c has a structure of covering the upper portion of the key switch 7a.

(Problems to be solved by the invention) However, in the push button switch based on the DIN standard, since the distance between the key top 7c and the key switch 7a is small, the conventional key stopper 5 having a height of approximately 1 is provided between them. It is impossible to insert.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a key stopper that can be easily attached even to a push button switch having a small gap between the key top and the key switch.

(Means for solving the problem) A key stopper for a push button switch in which the distance between the key top and the key switch is small, and a plate-shaped body is inserted between the key top and the key switch to be integrated with the body. The pressing prevention part formed on the key top is brought into contact with the lower surface of the key top, and a plurality of similarly formed retaining pieces are locked to the peripheral surface of the key switch, and the contact piece formed integrally with the main body is attached. It is characterized in that it is brought into contact with the inner wall of the key top located rearward in the insertion direction of the main body.

(Operation) Insert the plate-shaped main body of the key stopper between the key top and the key switch with a small gap, and make the press-down prevention part abut on the bottom surface of the key top to prevent the key top from being pushed down and the retaining piece. Is locked to the peripheral surface of the key switch, and the contact piece is brought into contact with the inner wall of the key top to prevent the main body from coming off.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing a key stopper according to the present invention together with a push button switch, and FIG. 2 is a view showing a mounted state of the key stopper.

In these drawings, the push button switch 10 includes a key switch 11, and a contact mechanism is provided in the key switch 11. From the top of the key switch 11, the key lever 1
2 is protruding. A key top 13 is attached on the key lever 12. The distance between the lower end surface 13a of the key top 13 and the upper surface of the key switch 11 is set to a small distance l.

In the push button switch 10 having the above configuration, the key top 13 is pushed down to move the key lever 12 to the key switch 1
When the key switch 11 is moved downward, the contact mechanism of the key switch 11 is closed, so that key information is input to the keyboard body.

Now, the key stopper 14 according to the present invention is a body 14 on a plate.
Have A. This main body 14A has an opening 14B at the center.
And has a U-shape. On both sides of the main body 14A, the retaining pieces 14a formed by bending downward,
14a is provided. At the position opposite to the opening 14B of the main body 14A, another retaining piece 14b formed by bending downward is provided. A pair of push-in prevention portions 14c, 14c extending integrally from the main body 14A are located on both sides of the retaining piece 14b. A pair of abutting pieces 1 are integrally extended from the main body 14A and bent upward on both sides of these push-down preventing portions.
4d and 14d are located.

Next, a usage mode of the key stopper 14 of the present invention will be described.

That is, the main body 14A includes the key top 13 and the key switch 11
Insert between and in the direction of the arrow. When the main body 14A is inserted, the key lever 12 is positioned in the opening 14B, and the lower end surface 13a of the key top 13 abuts on the pair of push-down preventing portions 14c and 14c. Therefore, even if the key top 13 is pressed, the key top 13 is not pressed down, so that the push button switch 10 can be held in the unusable state. On the other hand, the side wall 11a of the key switch 11,
The retaining pieces 14b, 14a, 14a are provided on 11b, 11c.
Are locked respectively. Further, the contact pieces 14d, 14d are pushed down by the lower end surface 13a of the key top 13 when the main body 14A is inserted, and when they are inserted into the key top 13, the original bent state is restored, and the insertion direction of the main body 14A (see the arrow). It contacts the inner wall 13b of the key top 13 located at the rear of the. Therefore, the retaining pieces 14a, 14b, 14b
Also, since the main body 14A can be prevented from slipping out between the key top 13 and the key switch 11 by the contact pieces 14d, 14d, the key stopper 14 of the present invention can be mounted on the push button switch 10 securely and easily. be able to.

FIG. 3 is a perspective view showing a key stopper according to another embodiment of the present invention together with push button switches having different structures, and FIG. 2 is a view showing a mounted state of the key stopper.

In this push button switch 10, a key top 13 'is tilted and arranged on the key switch 11, and the key top 13' is arranged.
The distance between the lower end surface 13a 'on one end side and the upper surface of the key switch 11 is slightly larger than that on the other end side.

On the other hand, in the key stopper 14 of the present invention, the pair of depression preventing portions 14c 'and 14c' are formed by being bent upward in an L shape. Therefore, when the main body 14A is inserted between the key top 13 'and the key switch 11 in the direction of the arrow, the key top 1 is placed on the depression preventing portions 14c' and 14c '.
Since the lower end surface 13a 'of 3'abuts, the push button switch 10 can be similarly held in the unusable state.

In the embodiment described above, the contact pieces 14d, 14d are pushed down to pull out the main body 14A in the opposite direction, or the key top 13 (13 ') is removed from the key lever 12 and the main body 14A is removed from the key switch 11.
The key stopper 14 can be detached from the push button switch 10. Therefore, after that, the push-down operation of the push-button switch 10 can be performed.

(Effects of the Invention) According to the present invention, the key stopper is composed of a plate-shaped main body, and the main body has a push-down preventing portion that abuts the lower surface of the key top, and a plurality of retaining pieces that are locked to the peripheral surface of the key switch. Since the contact piece that comes into contact with the inner wall of the key top is integrally formed, a key stopper can be inserted between the key top and the key switch even if the push button switch has a small gap between the key top and the key switch. Thus, the push button switch can be held in the unusable state easily and reliably.

[Brief description of drawings]

1 and 2 are perspective views showing a key stopper according to the present invention together with a push button switch, and views showing the mounted state of the key stopper, and FIGS. 3 and 4 are keys according to another embodiment of the present invention. FIGS. 5 and 6 are perspective views showing a stopper together with a push button switch and a mounting state of the key stopper, and FIGS. 5 and 6 are perspective views showing a conventional key stopper together with a push button switch and a diagram showing a mounting state of the key stopper. FIG. 7 is a schematic diagram of a DIN standard keyboard device, and FIGS. 8 (A) and 8 (B) are DIs.
It is the figure which shows a part of cross section of the push button switch based on N standard, and the figure which shows the push down state. 10 ... push button switch, 11 ... key switch, 13, 13 '... key top, 13a ... lower end surface, 13b ... inner wall, 14 ... key stopper, 14A ... body, 14a, 14b. One piece, 14c, 14c '... Depressing prevention part, 14d.

Claims (1)

[Scope of utility model registration request] 1. A key stopper for a push button switch, in which key tops are arranged on the key switch at small intervals, and a plate-shaped main body inserted between the key switch and the key top, A press-preventing portion that is integrally formed and comes into contact with the lower surface of the key top; a plurality of retaining pieces that are integrally formed with the main body and that are locked to the peripheral surface of the key switch; A key stopper for a push button switch, comprising: an abutment piece that is integrally formed with the main body and abuts against an inner wall of the keytop located rearward in the insertion direction of the main body.