JPS63308824A - Large key - Google Patents

Abstract

PURPOSE:To make unsymmetrical contact between a key stem and a housing preventable from occurring by setting up two arm bars at a right angle to each other, in case of a large key with the arm bar. CONSTITUTION:A large key 13 consists of unused keys H and I in almost rectangular relations with a working key G. When the top of somewhere in the key H is pressed down in the key depression A direction, a key top 14 tries to tilt toward the key H side, but a K-K' direction is kept in the same height by an arm bar 16, whereby the key G tries to go down as keeping almost the same height with the key H. If the key G tries to go down, an L-L' direction is kept in the same height by the arm bar 15 set up in the rectangular direction with the bar 16, whereby the key I goes down as keeping almost the same height with the key G. Consequently, the key top comes to the same height as a whole, although the top of somewhere in the key H is pressed down, thus a key stem 2 of the key G operates without making unsymmetrical contact with a housing 5. Even in the case where the top of somewhere in the key I is pressed down, it operates in the same manner.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to large keys for a keyboard device used as an input device for various information processing devices such as a digital converter and a word processor.

(Conventional technology) Conventionally, No? - In keyboard devices for inputting information such as personal computers and food processors, large keys are used for frequently used function keys to prevent incorrect input even when pressed at high speed.

Large keys need to operate smoothly no matter where they are pressed, and various types of keys have been developed, one example of which will be explained with reference to the drawings.

FIG. 2 shows a conventional technology in which a large kim 2 with an arm bar is integrated, and a key stem 2 and a return spring 9 are attached to a housing 5.
The key stem 2 and the housing 5 are locked together by a locking means (not shown).

Oval holes 3 are provided on opposing sides of the key top 1 as engagement holes for engaging with the arm hooks 8 so as to be perpendicular to the key depression direction and facing each other. The key switch mounting frame 6 has a piece 7 and a nozzle 5 integrated therein as an engaging portion that engages with the arm bar 8. The arm bar 8 is approximately U-shaped, and has arm portions 8m and 8b.
The respective ends 8d and 8e of
The main body portion 8C between the arm portions 8a and 8b is rotatably inserted into the piece 7 of the key switch mounting frame 6.

Next, the effect will be explained. When the key controller f1 is pushed down in the direction of arrow A against the return spring 9 as shown in Figure 2,
The key stem 2 conducts a contact circuit provided in a switch section of a substrate (not shown). At this time, the arm bar 8 rotates and slides the main body part 8C engaged with the piece 7, and the end part 8d,
Slide Be through the oval hole 3 of the key top 1. If the position to press is on B near key stem 2, key top l
The key stem 2 and the 71 song 5 slide in the direction indicated by the arrow without tilting. When one end side B of the key top is pressed down, the key dog 1 tries to tilt greatly toward the one end side B, but since both arms 8a and 8b of the arm bar 8 are always in the same phase with the main body part 8c, the other end side One end of the key stem C is also at the same height as the end B, and the key stem 2 and the housing 5 slide smoothly.

(Problem to be solved by the invention) However, there is no common standard for the number of keys on a keyboard device. For example, for 9-sonal computers, the number of keys may have to be increased depending on the country in which it is used. A situation arises. In consideration of such cases, the key switch mounting frame and the board are provided with nozzles and contact circuits, and for the time being, unused keys are covered with large keys, and when the number of keys increases, the key switch is installed. The above request is met by dividing the top. FIG. 3 is a schematic diagram of a large key including unused keys, the figure ＠) is a plan view, and the same figure (b) is a side view. The key top 1° includes a used key G and unused keys H and I adjacent to each other in a substantially perpendicular relationship. No matter where you press down on the part surrounded by ranges E and F, the key G will operate due to the arm bar 12, but if you press down on the part surrounded by ranges E and F, the key controller fx will be activated.
There was a problem in that the key stem 2 and the housing 5 did not operate due to uneven contact between the key stem 2 and the housing 5.

(Means for Solving the Problems) The present invention aims to solve the above problems with the arm/'?
- In the firing type key, the two arm bars are arranged at right angles to each other.

(Function) According to the present invention, the parallelism of the key top in the 〒 direction is maintained by one of the two arm bars, and the parallelism in the other direction is maintained by the other arm bar. Therefore, even if an arbitrary position on the key top is pressed down, the entire key top is pressed down in parallel, so that no uneven contact υ occurs between the key stem and the housing.

(Example) Embodiments of the present invention will be described in more detail with reference to the drawings.

Note that elements common to each drawing are given the same reference numerals.

First Embodiment FIG. 1 is an external perspective view of a large key with an arm bar according to a first embodiment of the present invention, and FIG. 4 is a sectional view taken along the line J--J in FIG. 1. In FIG. 1, the large key 13 consists of a used key G and unused keys H and I, which are approximately perpendicular to each other. Keytra f14 is integrated with three key stems 2,
The key stems 2 are inserted into the housing 5 of the key switch mounting frame 6, respectively. A key stem 2 having a return spring (not shown) and a switch contact (not shown) is inserted into the housing 5 for the used key G, and the unused key H,
In I, only the key stem 2 without a switch contact is inserted into the housing 5.

The key top 14 is not flipped off by a return spring (not shown); the key stem 2 is locked to the housing 5 at one end of its stroke by a locking means (not shown).

The key controller f14 is provided with oval holes 14a as engagement holes in opposing side surfaces 14c and 14d so that the longitudinal direction thereof is perpendicular to the key press direction and facing each other. J4f is provided with an oval hole 14b. A housing 5 and a generally concave piece 7 serving as an engaging portion are integrated into the key switch mounting frame 6. The arm bar 15 has a substantially U-shape, and includes a main body portion 15c sandwiched between arm portions 15a and 15b, a tip portion 15e on the arm portion 15h side, and an arm portion 15b.
It consists of a side tip part 15d. The tip portions 15d and 15e are bent in opposite directions parallel to the main body portion 15c, and are engaged with the oval hole 14a of the key top 14. The main body portion 15c is engaged with the piece 7. The arm bar 16 is also approximately U-shaped and includes arm portions 16a, 16b, a main body portion 16c, and a tip portion 16d.
and 16e, the tip portions 16d and 16e are bent in opposite directions parallel to the main body portion 16c, and the key top 1
It is engaged with the oval hole 14b of No. 4. The main body part 16c is piece 7
is engaged in.

Next, the effect will be explained. Figure 4 shows unused key H
When you press down near the key in the key press direction, key top 1
4 tries to lean towards the unused key H side, but arm bar 16
Therefore, the K-K' direction is held at the same height, and the used key G tries to go down while maintaining almost the same height as the unused key I. When the used key G tries to go down, the arm bar 15 , the L-L' direction is held at the same height, and the unused key I lowers while maintaining almost the same height as the used key G. Therefore, the key dog 1 is held at the same height as the unused key H.
Even though I pressed down near the top, the whole thing is at the same height.Is the key stem 2 of the key G used? 'i It operates without one-sided contact with the housing 5. Similarly, when pressing down near an unused key, the used key G operates smoothly. 1st
According to the embodiment, there is no place where the arm bars interfere with each other, so there is no need to add a special relief to the arm bars.

Second Embodiment FIG. 5 is an external perspective view of a large key with an arm bar according to the second embodiment, and FIG. 6 is a sectional view taken along the line MM in FIG. 5. The difference from the first embodiment is that the engagement holes that engage the tips 16d and 16e of the arm bar 16 attached to the inside of the key truck f18 are fitted, and the key switch that the main body 16c of the arm bar 16 engages with. The shape of the piece 20 provided on the mounting frame 19 is approximately U-shaped, and the opening 20a is provided parallel to the main body 16c of the arm bar 16.

Next, the effect will be explained. Unused key I shown in Figure 6
When you press down near the key in the key press direction, key top 1
8 tries to lean towards the unused key side, but arm bar 1
5, the L-L' direction is held at the same height, and the used key G tries to descend while maintaining almost the same height as the unused key I. When the used key G tries to go down, the main body part 1'6c of the arm bar 16 slides between the piece 17 and the key switch mounting frame 19 in the direction of arrow N, and the height in the K-K' direction is kept the same by the arm bar 16. is held in
The entire large key, including the unused key H shown in FIG. 1, is pressed down at the same height.

According to the second embodiment, when assembling the large key 17, first the main body 16c of the arm bar 16 is engaged with the piece 20, then the key stem 2 and the housing 5 are engaged, and then the arm bar 15 is inserted into the piece 7. However, since the arm bar 16 and the piece 20 are engaged by simply inserting the main body portion 16c of the arm bar 16 into the opening 20a of the piece 20, the arm bar can be easily assembled. In addition, thin keyboards that have recently become popular have a structure in which the sides of the key tops cover the key switches to achieve a thin design, so if you use the second embodiment, you can easily use large keys. realizable.

Third Embodiment FIG. 7 is an external perspective view of a large key with an arm bar according to a third embodiment, and the key is omitted for ease of viewing. 8th
The figure is a 0-0 cross-sectional view taken along arrows in FIG. The only difference from the second embodiment is the shape of the arm bars 21 and 22. The arm bar 21 has tip portions 21a and 21b bent in opposite directions parallel to the main body portion 21c, and the arm bar 22 has a tip portion 22d.

22e is parallel to the main body part 22c and is extended in opposite directions,
Main body part 22c that interferes with main body part 21c of arm bar 21
A substantially semicircular arc-shaped bent portion 22f is provided in the direction opposite to the direction in which the key controller fxs is pressed.

The operation is the same as in the second embodiment.

According to the third embodiment, when assembling the key stem into the housing, the arm bar 22 and the piece 20 are engaged by simply sliding the arm bar 22 into the opening of the piece 20, so that the arm bar can be easily assembled.

Fourth Embodiment FIG. 9 is an external perspective view of a large key with an arm bar according to a fourth embodiment. The key top 18 is different from the third embodiment.
The tip 23a of the arm bar '23 is attached to the outside of the
, 23b are parallel to the main body part 23c and bent in opposite directions, and a substantially semicircular arc-shaped bent part 23d is provided on the main body part 23c of the arm bar 23 as a relief for the arm bar 23° 240 interference part.

The operation and effect are the same as in the second embodiment.

Fifth Embodiment FIG. 10 is an external perspective view of a large key with an arm bar according to a fifth embodiment. The difference from the second embodiment is the arm bar 2.
The tip portions 25a and 25b of the main body portion 25c are bent in opposite directions parallel to the main body portion 25c.

The operation and effect are the same as in the first embodiment.

(Effects of the Invention) As described above in detail, according to the present invention, the two sets of arm bars are engaged with the key top of the large key and the piece on the key switch mounting frame so as to be perpendicular to each other. However, no matter where you press down on the key top,
Since the key tops are arranged to fall parallel to each other, the key stem integrated into the key tops and the housing do not touch each other smoothly, resulting in smooth operation. One type of keypad can be used as a keyboard for other models with different numbers of keys, and it is expected that the keyboard can be provided at a low price.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a large key with an arm bar according to the first embodiment, Fig. 2 is a schematic diagram of a large key with an arm bar according to the prior art, and Fig. 3 is a schematic diagram of a large key including unused keys. Figure 4 is a J-J cross-sectional view in Figure 1, and Figure 5 is a
External perspective view of a large key with an arm bar according to an embodiment, No. 6
The figure is a sectional view taken along the line MM in FIG. 5, FIG. 7 is an external perspective view of a large key with an arm bar according to the third embodiment, and FIG.
9 is an external perspective view of a large key with an arm bar according to a fourth embodiment, and FIG. 10 is an external perspective view of a large key with an arm bar according to a fifth embodiment. 1rIOr'4+18...Key top, 13°17.
・・Large key, 8.12.15,16,21°22.2
3,24.25...arm bar, 7,20...piece. Patent applicant: Oki Electric Industry Co., Ltd. (A)
(Mouth → (c) Thread fastening-like undergarment” 7 + side arm bar °-i size large-1
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Douhyeon map 10

Claims (1)

[Scope of Claims] 1. A key consisting of a housing provided on a key switch mounting frame and a key stem integrated into a box-shaped key top, wherein pairs consisting of the housing and the key stem are provided at three or more locations, and Large keys characterized by a two-dimensional arrangement of each other. 2. Provide three or more pairs of housings provided on the key switch mounting frame and key stems integrated into box-shaped key tops, and arrange them two-dimensionally with respect to each other, and The ends of both arms of a substantially U-shaped arm bar are engaged with the engagement holes, and the main body between the arms of the arm bar is engaged with the engagement portion on the key switch mounting frame, and the above-mentioned A large key in which the entire key top is pressed down in parallel when an arbitrary position on the key top is pressed down, characterized in that the two arm bars are arranged substantially at right angles to each other. 3. The engaging hole on the opposing side surfaces of the key top with respect to the arm bar and the engaging part on the key switch mounting frame are arranged such that their longitudinal directions are perpendicular to the pressing direction of the key top and are opposite to each other. 3. The large key according to claim 2, further comprising: an oval hole having a diameter of 1.5 mm, and a generally concave piece having an opening parallel to the main body of the arm bar. 4. The engaging hole on the opposing sides of the key top for one arm bar and the engaging portion on the key switch mounting frame are respectively a fitting hole and an opening parallel to the main body of the arm bar. and a U-shaped piece having a longitudinal direction as the engagement hole on the same mating side surface of the key top with respect to the other arm bar and the engagement part on the key switch mounting frame, respectively. The large key according to claim 2, wherein the large key is provided with oval holes that are perpendicular to the pressing direction of the arm bar and facing each other, and a concave piece having an opening parallel to the main body of the arm bar. . 5. A patent claim in which, as one of the arm bars, the tips of both arms are bent in parallel to and in opposite directions to the main body, and as the other arm bar, the tips of both arms are bent in parallel to and in opposite directions to the main body. A large key according to item 3 or 4 of the range. 6. As one of the arm bars, bend the tips of both arms parallel to the main body and in opposite directions; as the other arm bar, bend the tips of both arms parallel to the main body and in opposite directions; The large size according to claim 4, wherein the main body of one of the arm bars is provided with a bent portion in a direction opposite to the direction in which the key top is pressed, at an interference portion between the main body of the arm bar and the main body of the other arm bar. Key. 7. As one of the arm bars, bend the tips of both arms parallel to the main body and in opposite directions; as the other arm bar, bend the tips of both arms parallel to the main body and in opposite directions; Claim 4, wherein the body part of the other arm bar is provided with a bent part in a direction opposite to the direction in which the key top is pressed, at an interference portion between the body part of the arm bar and the body part of the other arm bar. large key. 8. The large key as set forth in claim 4, wherein the arm bars have the tips of both arms bent in directions parallel to and opposite to the main body.