JPS635070Y2 - - Google Patents

Description

[Detailed explanation of the invention] Conventionally, display devices and keyboards of word processors, computers, etc. have been placed on dedicated stands or tables, so even when not in use,
It occupied a large amount of floor space, which was both wasteful and a nuisance.

The present invention uses a display device and a keyboard by placing them on a main top plate and an auxiliary top plate that are close to each other, and when not in use, the auxiliary top plate can be placed on the main top plate and the auxiliary top plate without breaking the electrical connection between the two. This relates to an auxiliary top board retracting device that solves the above-mentioned drawbacks by being able to be easily retracted below the main top board together with the keyboard placed above. This will be explained in detail.

In FIG. 1, a pair of left and right rails 2, 2 are laid on the lower surface of the main top plate 1, facing in the front-rear direction and forming a channel shape, with opening surfaces facing each other and both ends closed. There is.

On the lower surface of the main top plate 1, there is a base frame 3 having an inverted U-shape in front, and rollers 4 facing in the left and right direction, which are pivoted at both the front and rear ends of the upper left and right outer surfaces of the base frame 3, are fitted onto the rails 2, 2. By fitting it together, it is suspended so that it can move forward and backward.

At the top of the left and right side plates 3a of the base frame 3, there is an upper link plate 5 which faces rearward and downward and whose front shape is an inverted U shape.
The front ends of the left and right pieces 5a, 6a are pivoted with pins 7 facing in the left and right direction.

At the front lower part of the pin 7, on the left and right side plates 3a of the base frame 3, there are left and right side pieces 6 of a lower link 6 which has a U-shape in front and has the same length as the upper link 5.
The front end of a is pivotally attached with a first pivot 8 passing through both side plates 3a, 3a.

A vertical plate 9 facing in the front-rear direction is vertically installed at the front center of the lower surface of the base frame 3, and an arcuate hole 10 centered on the first pivot 8 is provided in front of the first pivot 8 at the center of the vertical plate 9.
are cut out, and forward locking holes 11 are connected to both upper and lower ends and the middle of the front side of the arcuate hole 10, respectively.

A locking plate 12 facing downward and forward is vertically provided at the center of the lower front part of the lower link 6, and a long hole 13 facing the first pivot 8 is bored at a location corresponding to the arcuate hole 10 in the locking plate 12. It is set up.

The vertical plate 9 and the locking plate 12 have an arcuate hole 10 and a long hole 1.
3 and are slidably overlapped by an engaging pin 14 passing through them.

The engagement pin 14 is biased forward by a tension spring 15 stretched between the lower front end of the locking plate 12, and in FIG. A plate 12 is non-slidably fixed to the vertical plate 9.

On the side pieces 5a and 6a on the same side of both links 5 and 6,
An inclined portion 1 facing downward and forward in the front part of the support arm 16
The lower part of 6a is a pin 17 and a second pivot 18 that are spaced equally apart from each other with the spacing between the pins 7 and the first pivot 8, respectively.
The pins 7, 17 and the pivots 8, 18 on the same side form each vertex of the parallel four-rod linkage.

Horizontal part 1 at the rear of both left and right supporting arms 16, 16
A horizontal auxiliary top plate 19 at the same height as the main top plate 1 is fixed to the top surface of the main top plate 1, and a horizontal connecting plate 20 is fixed to the bottom surface of the top plate 6b, 16b. A roller 21 is pivotally provided straddling a bent portion that is a continuous portion between the inclined portion 16b and the inclined portion 16a.

A pair of elongated holes 22, 22 facing in the front-rear direction are bored in the center of the connecting plate 20 in a row in front and back.
A gripping means 23 along the lower surface of the connecting plate 20 is attached with vertical pins 24 and 30 so as to be slidable back and forth.

The front pin 24 and the engagement pin 14 are connected to the first
The second pivot shafts 8 and 18 are connected to each other by a wire rope 25 that is wrapped around a roller 21.

A slack-prevention tension spring 27, which is weaker than the tension spring 15, is stretched between the rear pin 24 and the vertical piece 26 that connects the rear ends of the left and right support arms 16, 16.

On the main top plate 1 and the auxiliary top plate 19 are a word processor display device 28 and a keyboard 2, respectively.
9 is placed.

FIG. 1 shows the device of the present invention in use with a word processor, in which the engagement pin in the long hole 13 of the engagement plate 12 is inserted into the engagement hole 11 at the lower end of the arcuate hole 10 of the vertical plate 9. 14 is engaged and the lower link 6 is fixed so that it cannot swing, the parallel four-rod link mechanism is not deformed and the keyboard 29 on the auxiliary top plate 19 is fixed.
is stably held behind the display device 28.

In some cases, the engaging pin 14 may be inserted into the intermediate locking hole 1.
1, the keyboard 29 is
It is also possible to hold the keyboard 29 slightly lower than the above, and furthermore, by moving the base frame 3 back and forth along the rails 2, 2, the front and back position of the keyboard 29 can be adjusted as appropriate. Therefore, depending on the user,
The keyboard 29 can be operated at an optimal position.

When you have finished using the word processor, pull the handle plate 23 backward, and the engagement pin 14 will fit into the elongated hole 1.
3 to the arcuate groove 10, and the engagement between the vertical plate 9 and the locking plate 12 is released.

Therefore, as shown in FIG. 3, due to the action of the parallel four-bar link mechanism, both links 5 and 6 are moved together with the keyboard 29 while keeping the auxiliary top plate 19 horizontal.
When the engaging pin 1 is moved to the lower limit where it faces vertically,
4 also moves to the upper limit within the arcuate hole 10 and engages with the locking hole 11 at the upper end by the tension spring 15, and the auxiliary top plate 19 is fixed below the main top plate 1.

Further, by pushing the base frame 3 along the rail 2, the keyboard 29 is stored in the lower front part of the main top plate 1.

When using the word processor, the keyboard 29 can be pulled out as shown in FIG. 1 by performing the reverse operation of the above-mentioned storage.

As described above, according to the device of the present invention, the keyboard 29 can be used while being placed on the auxiliary top plate 19 in the user's optimal position, and when not in use, it can be moved to the main keyboard by a simple operation. Since it can be retracted and stored under the board 1, the room can be utilized widely, which is very convenient.

It should be noted that the present invention does not specify the means for engaging the vertical plate 9 and the locking plate 12 as described above, and any suitable known latch means may be applied.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional side view of one embodiment of the device of the present invention with the auxiliary top plate pulled out, and FIG.
Similarly, FIG. 3 is a plan view with the main top plate and the auxiliary top plate removed, and a vertical sectional view with the auxiliary top plate retracted. 1...Main top plate, 2...Rail, 3...Base frame, 3
a...Side plate, 4...Roller, 5...Upper link,
6... lower link, 5a, 6a... side piece, 7...
Pin, 8...First axis, 9...Vertical plate, 10...
Arc-shaped groove, 11... Engagement hole, 12... Locking plate, 13
... Long hole, 14 ... Engagement pin, 15 ... Tension spring, 16 ... Support arm, 16a ... Inclined part, 16b ...
...Horizontal part, 17...Pin, 18...Second axis, 1
9...Auxiliary top plate, 20...Connecting plate, 21...Roller, 22...Elongated hole, 23...Handle plate, 24...Pin, 25...Wire rope, 26...Vertical piece, 2
7... tension spring, 28... display device, 29...
Keyboard, 30...pin.

Claims (1)

[Scope of claim for utility model registration] (1) The base frame provided on the bottom surface of the main top plate and the support arm provided on the bottom surface of the auxiliary top plate are rotatably connected by two parallel upper and lower links. By doing so, a parallel four-bar link mechanism is formed, and from the base frame and one of the links, a perpendicular plate and a locking plate, which are respectively vertically oriented in the front-rear direction and overlap each other, are provided.
An auxiliary top plate retracting device provided with mutual engagement means capable of suppressing rotation of a parallel four-bar link mechanism. (2) The mutual engagement means is movable about the center of rotation of the locking plate by tending to fit into an arcuate groove with a locking hole provided in the vertical plate and into the locking hole. The device according to claim (1) of the utility model registration, which comprises an engaging pin provided on a locking plate. (3) Utility model registration claim paragraph (1) or paragraph 2, in which the base frame is movable in the front and back direction on the lower surface of the main top plate.
The device described in paragraph (2).