JPH0523066Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a so-called writing desk that can be expanded from a vertically closed position to a horizontally open position with a retractable deck when used as a desk.

[Prior Art] This type of writing desk is suitably used as a furniture-style bookshelf that doubles as a desk, but in the conventional writing desk, the desk part and the bookshelf part are integrally formed, and the installation width is limited. is fixed.

[Problems to be Solved by the Invention] Therefore, this may cause inconvenience or inconvenience, for example, when trying to use indoor space effectively or trying to harmonize with other furniture.

Therefore, an object of the present invention is to provide a writing desk that allows the installation width of the entire writing desk to be expanded or contracted as required.

[Means for solving the problems] The structure of the present invention to achieve the above purpose is as follows:
This will be explained using a first embodiment shown in FIGS. 1 to 5.

The writing desk of the present invention has an opening/closing deck 3a on the front surface of the intermediate portion that can be freely rotated from a vertically closed position to a horizontally open position. A desk main body 1 comprising shelf casings 4 and 5, and a movable side plate 2a supported with an intermediate guide space 50 above and below the inner surface of the movable side plate 2a facing the open side surfaces of the upper and lower fixed shelf casings. from the upper and lower fixed shelf housings 4,
The desk main body 1 and the separate desk body 2 are nested in each other. It is said to be able to expand and contract inwardly.
Further, in the writing disk of the present invention, on the upper surface of the top plate 2b of the desk separate body 2, a dovetail-shaped guide groove 8 having a continuous locking protrusion 8a on the upper surface opening edge is formed almost entirely in the left-right direction. The top plate 1 of the desk main body 1 is provided through the desk body 1 and is in contact with the top surface of the top plate 2b.
A slider 12 is fixedly installed on the lower surface of the opposite end of b, and the large diameter protrusion at the lower end is fitted into the guide groove 8 so as to be engaged in the vertical direction and slidable in the left and right directions. , the upper and lower shelf boards 1c and 1d of the desk housing 3 in the middle part of the desk main body 1, and the upper and lower shelf boards 2 of the guide space 50 in the middle part of the separate desk body 2 that slide in contact therewith.
A rolling element 13 that rolls when the desk main body 1 and desk separate body 2 expand and contract is interposed on the sliding surface between the desk main body 1 and the desk separate body 2. A guide groove 11 is provided continuously in the left-right direction on the upper surface of the front protruding portion of the lower edge of 1f, and a reinforcing back on the back surface of the lower movable shelf housing 7 of the separate desk body 2 is provided in the guide groove 11. A feature is that the lower end of the plate 2g is inserted and held so as to be slidable in the left-right direction.

[Function] When the movable side plate 2a of the desk separate body 2 is pressed or pulled, the movable shelf housings 6 and 7 of the desk separate body 2 slide in and out of the fixed shelf housings 4 and 5 of the desk body 1 in a nested manner. , the separate desk body 2 is moved toward and away from the desk main body 1, and the installation width of the entire writing desk can be expanded or contracted to any desired size.

[Embodiment] A first embodiment of the writing desk according to the present invention shown in FIGS. 1 to 5 will be described below.

The writing desk consists of a fixed desk main body 1 and a separate desk body 2 that slides toward and away from the desk main body 1 in horizontal and lateral directions. The desk main body 1 includes a fixed side plate 1a, a top plate 1b, upper and lower shelf plates 1c,
1d, a back plate 1e, and a reinforced back plate 1f, and a desk housing 3 is provided between the upper and lower shelf plates 1c and 1d in the center. A writing desk opening/closing deck 3d is provided which is rotated to the horizontal open position shown by the chain line in the figure. On the top and bottom of this desk housing 3, there are inner surfaces 4a,
Upper and lower fixed shelf casings 4 and 5 with open ends 5a are formed, respectively. The separate desk 2 includes a movable side plate 2a, a top plate 2b, upper and lower shelf plates 2c and 2d, and a base plate 2e.
and a back plate 2f, a reinforced back plate 2g, and a top plate 2.
An upper movable shelf housing 6 is formed between the upper shelf board 2c and the upper shelf board 2c, and a lower movable shelf housing 7 is formed between the lower shelf board 2d and the base plate 2e. 3 is inserted from the side into the guide space 50
It is becoming. Here, the upper and lower movable shelf housings 6, 7
are formed with external dimensions slightly smaller than those of the upper and lower fixed shelf casings 4 and 5, respectively, and the casings 6 and 7 are configured to be freely inserted into the casings 4 and 5 in a nested manner. .

Further, the upper fixed shelf housing 4 includes a closed shelf portion 4b having an opening/closing door and a removable book end 4d.
The lower fixed shelf housing 5 is divided into a drawer shelf 5b and an inner open space 5c on one side, and the lower fixed shelf housing 5 is divided into a drawer shelf 5b and an inner open space 5c. The chairs are now stored inside. On the other hand, the separate desk 2 is provided with moving casters 2h at its lower part. In addition, the upper movable shelf housing 6 is a stepped bookshelf equipped with a glass sliding door 6a.
The lower movable shelf housings 7 are each formed into a stepped bookshelf having an opening/closing door 7a.

In addition, a top plate 2b is provided on the upper sliding surface between the casings 4 and 6.
A first sliding guide means 16 is formed of a guide groove 8 formed on the upper surface and a slider 12 provided on the lower surface of the end of the top plate 1b, and a first sliding guide means 16 is formed on the lower surface of the upper shelf plate 2c on the lower sliding contact surface. A second sliding guide means 17 is provided which includes a guide groove 9 and a slider 13 provided on the upper surface of the end portion of the upper shelf board 1c. In addition, on the upper sliding contact surface between the housings 5 and 7, a slider 14 is provided on the upper surface of the end of the lower shelf board 2d.
A third sliding guide means 18 includes a slider 14 provided on the upper surface of the end of the lower shelf board 2d and a guide groove 10 buried in the lower surface of the lower shelf board 1d, and a reinforced backing is provided on the lower sliding surface. A guide groove 11 formed in an L shape at the lower end of the plate 1f
(See FIG. 3) and a fourth sliding guide means 19 consisting of the lower end portion 15 of the reinforcing back plate 2g are provided.

The first guide means 1 among these sliding guide means
6, as shown in FIG. 4, the guide groove 8 is formed in a dovetail shape with a locking protrusion 8a at the top, while the slider 12 has a clamping protrusion that clamps the locking protrusion 8a. 1
It is formed in the shape of a pot-shaped locking piece with a middle portion having a small diameter and having upper and lower portions 2a. Further, as shown in FIG. 5, the second and third guide means 17 and 18 are rotatably supported within a guide groove 9 having a rectangular cross section and a semicircular arc recess 13b via a central shaft 13a. It is formed by a disc-shaped rolling element 13.

In the expandable writing desk of the present invention configured as described above, when the separate desk body 2 is slidably moved toward and away from the desk body 1, each of the casings 4, 5
Since the sliding surfaces between 6 and 7 are slid through the first to fourth sliding guide means 16, 17, 18, and 19, respectively, without applying any frictional force, the separate desk body 2 is in contact with The separation is done smoothly. Therefore, the entire desk can also be expanded and contracted in a stable and orderly manner. In particular, since some of the locking guide means forming the first guide means 16 restrain the separate desk 2 in the longitudinal and vertical directions with respect to the main desk 1, there is a possibility that all the guide means may be accidentally detached. Therefore, the separate desk 2 can be expanded and contracted extremely smoothly without shaking or generating frictional force. Note that the casters 2h assist the movement of the separate desk 2, and are particularly effective when the separate desk 2 is heavy.

Next, a second embodiment shown in FIGS. 6 and 7 will be described. In this embodiment, the interior of the lower movable shelf housing separate from the desk in the first embodiment is formed to be hollow,
When the entire desk is installed with a reduced width, the inner space is placed in contact with the chair storage space.

That is, the lower movable shelf housing 27 of the desk separate body 22 is formed to be hollow, and the chair 40 is inserted into this internal space 27a. Therefore, the width dimension of the separate desk body 22 is set smaller than the width dimension of the separate desk body 22 in the first embodiment. The desk main body 21 is set to have the same width dimension as the desk main body 1 of the first embodiment, but the separate desk body 2 to be inserted is
Since the width dimension of 2 is small, fixed shelf casings 24 and 25
The sliding cabinet space 24b and the drawer shelf space 25b are set larger than the corresponding spaces in the first embodiment. Note that the chair 40 is usually placed inside the internal space 27a of the separate desk body 22 when the desk is shortened, and within the desk main body 21 when the desk is widened.
They are each housed in the inner hollow space 25c.

In this embodiment as well, the sliding surfaces of the movable shelf casings 26, 27 and the fixed shelf casings 24, 25 are provided with dovetail guide grooves 28 and locking piece slides, as in the first embodiment. A first sliding guide means 36 consisting of a mover 32, second and third sliding guide means 37, 38 consisting of guide grooves 29, 30 and rolling sliders 33, 34, and a guide groove 31 and engagement. A fourth sliding guide means 39 consisting of a mating piece 35 is provided respectively. however,
Since the separate desk body 22 is relatively light in weight, no casters are attached to it.

It is unnecessary to explain that in this embodiment, as in the previous embodiment, the desk can be expanded and contracted smoothly and installed stably and orderly.

[Effects of the Invention] As explained above, the writing desk of the present invention has one open side at the top and bottom of the desk body which has a writing opening/closing deck in the middle part, and has a fixed shelf in the lower part of the housing. It is configured so that the desk separate body extends in a cantilever manner from the movable side plate, and the lower movable shelf housing is inserted in a nested manner, so that the desk separate body can be moved toward and away from the desk body as appropriate. This has the effect that the installation width of the entire writing desk can be expanded or contracted to any desired size as needed. Further, in the present invention, the desk separate body 2
On the upper surface of the top plate 2b, a locking protrusion 8a is attached to the upper opening edge.
A dovetail-shaped guide groove 8 having a continuous guide groove 8 is provided substantially all the way in the left-right direction, and on the lower surface of the opposite end of the top plate 1b of the desk main body 1 that is in contact with the upper surface of the top plate 2b,
A slider 12 is fixed in the guide groove 8, which engages the large diameter protrusion at the lower end in the vertical direction and is slidable in the left and right directions, so that the top plate 1 of the desk main body 1
The opposite end of b is connected to the dovetail guide groove 8 of the top plate 2b of the separate desk body 2 via the slider 12, so that the end of the top plate 1b of the desk main body 1 is directed upward. There is no unsightliness such as lifting up against the surface, and there is no wobbling during the expansion/contraction work of the desk main body 1 and desk separate body 2 due to this.

Further, the desk housing 3 in the middle part of the desk main body 1
The sliding surface between the upper and lower shelf boards 1c, 1d and the upper and lower shelf boards 2c, 2d of the intermediate guide space 50 of the desk separate body 2 which slides in contact with the desk main body 1 and the desk separate body 2 Since a rolling element 13 that rolls during expansion and contraction is provided, the expansion and contraction work is smooth and the sliding surface is not damaged.

Furthermore, the lower fixed shelf housing 5 of the desk main body 1
A guide groove 11 is provided continuously in the left-right direction on the upper surface of the front protrusion of the lower edge of the reinforcing back plate 1f on the back side, and in the guide groove 11, the lower movable shelf housing 7 of the desk separate body 2 is disposed. The lower end of the reinforcing back plate 2g on the back side is slidable in the left and right direction so that it can be inserted and held.
The bending of the desk main body 1 and the desk separate body 2 in the front and back direction is restricted to a straight line by the front and rear surfaces of the inner wall of the guide groove 11 and the front and rear surfaces of the upper end of the reinforcing back plate 2g inserted and held therein, so that the expansion/contraction work is prevented. The desk body 1 and separate desk body 2 do not sometimes bend, so the work is smooth, and the work is not installed in a bent state after the expansion work, giving a good appearance.

[Brief explanation of the drawing]

1 to 5 show a first embodiment of the writing desk according to the present invention, FIG. 1 is a front view of the entire desk in an expanded state, FIG. 2 is a front view of the entire desk in a reduced width state, Figure 3 is the first
An enlarged sectional view taken along the - line in the figure, Figure 4 is the first
FIG. 5 is a partially cutaway detailed view of part A in the figure, FIG. 5 is a partially cutaway detailed view of part B in FIG. The figure is a front view of the entire desk in an expanded state, and FIG. 7 is a front view of the entire desk in a reduced width state. 1, 21... Desk body, 2, 22... Desk separate body, 3, 23... Desk housing, 4, 5, 24,
25... Fixed shelf housing, 6, 7, 26, 27... Movable shelf housing, 8, 9, 10, 11... Guide groove, 1
2, 13, 14, 15...Slider, 16, 17,
18, 19...Sliding guide means, 28, 29, 3
0, 31...Guide groove, 32, 33, 34, 35...
...Slider, 36, 37, 38, 39...Sliding guide means.

Claims (1)

[Scope of Claim for Utility Model Registration] An upper and lower part of a desk housing 3 having an opening/closing deck 3a on the front surface of an intermediate portion that can be freely rotated from a vertically closed position to a horizontally opened position, with inner surfaces 4a and 5a open at the top and bottom. A desk main body 1 including fixed shelf housings 4 and 5,
Intermediate guide spaces 50 are provided above and below the inner surface of the movable side plate 2a facing the open side surface of the upper and lower fixed shelf housings.
A separate desk body 2 comprising upper and lower movable shelf casings 6 and 7 that are supported across the movable side plate 2a and cantilevered toward the inside of the upper and lower fixed shelf casings 4 and 5. The desk main body 1 and the desk separate body 2 have the upper and lower movable shelf casings 6 and 7 inserted into the upper and lower fixed shelf casings 4 and 5, and the desk casing 3 is The writing desk is inserted into a guide space 50 and is formed to be expandable and contractible in left and right opposing directions, and the upper surface of the top plate 2b of the separate desk body 2 has a locking protrusion 8a on the upper opening edge. The top plate 1 of the desk main body 1 is provided with a continuous dovetail-shaped guide groove 8 extending substantially all the way through in the left-right direction and in contact with the top surface of the top plate 2b.
A slider 12 is fixedly installed on the lower surface of the opposite end of b, and the large diameter protrusion at the lower end is fitted into the guide groove 8 so as to be engaged in the vertical direction and slidable in the left and right directions. , the upper and lower shelf boards 1c and 1d of the desk housing 3 in the middle part of the desk main body 1, and the upper and lower shelf boards 2 of the guide space 50 in the middle part of the separate desk body 2 that slide in contact therewith.
A rolling element 13 that rolls when the desk main body 1 and desk separate body 2 expand and contract is interposed on the sliding surface between the desk main body 1 and the desk separate body 2. A guide groove 11 is provided continuously in the left-right direction on the upper surface of the front protrusion of the lower edge of 1f, and a reinforcing back on the back side of the lower movable shelf housing 7 of the separate desk body 2 is provided in the guide groove 11. A writing desk characterized in that the lower end of the plate 2g is inserted and held so as to be slidable in the left and right directions.