JPH0445545Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to an improvement of a step board mounting device for a desk or the like.

<Prior Art and Problems> The above-mentioned conventional device forms a required number of protrusion mounting portions facing each other in the longitudinal direction at the front and back of the inner surface of the seating portion of the desk body, and at the same time, a locking piece is provided at the rear end of the step board. A state in which the support protrusions are removably protruded from two arbitrarily selected protrusion attachment parts, the locking piece is engaged with one of the support protrusions, and the front end is supported by the other support protrusion. The step board was constructed so that the height could be changed freely.
(For example, Utility Model Publication No. 53-31845) For this reason, when storing a chair in the seating area of the main body of the desk, it must be done by bending from a horizontal position to a standing position and into the space of the seating area so that the step board does not get in the way. Moreover, in order to sit down, the user had to pull out the chair from the space and then bend down to change the step board from an upright position to a horizontal position.

In other words, the task of changing the posture of the step board was extremely troublesome.

《Purpose and structure of the present invention》 The present invention improves the above-mentioned drawbacks and automatically changes the step board from a horizontal position to a standing position or from a standing position to a horizontal position as the chair moves in and out of the space. The purpose of this device is to provide a device for mounting a step board on a desk, etc. that is changed to a desk, etc., and its configuration consists of a board holder that is removably attached to the seating area of the desk body so that the mounting height can be changed. , a step board whose both ends are placed on the board holder; an upper part rotatably held on the back surface of the substantially central part of the step board in the front-rear direction; and a lower part formed at the rear end of the board holder. It consists of a board holding rod that is rotatably held in a holding part, and the board holding rod is attached to the step board.
It is always biased to rotate downward.

"Example" Examples will be described below based on the drawings.

In FIG. 2 showing the front view of the desk body, 10 is a top plate, 11 is a plate-shaped left side plate vertically installed on the lower surface of the left end of the top plate, and 12 is an upper and lower side plate provided on the lower right side of the top plate 1. Sleeve cabinet with 4 drawers, 13
14 is the lower left side of the top plate, and is a central drawer located between the left side plate 11 and the upper part of the sleeve cabinet 12. It forms the seating part 1 of the main body.

Reference numerals 2 and 2 refer to step board holders that are removably attached to the lower inner surface of the left side plate 11 and the lower inner surface of the sleeve cabinet 12 so that the height can be changed, and 3 is mounted on the step board holders 2 and 2. The placed step board 5 is a board holding rod whose upper part is rotatably held on the back surface of the approximately central portion of the step board 3 in the front-rear direction.

In the lower part of the inner side of the left side plate 11 and the sleeve cabinet 12, there are board receiving portions 14 in which a plurality of embedded nuts are embedded in two opposing rows at a predetermined interval vertically. A plurality of support protrusion attachment portions 15 . . . are arranged at a predetermined interval vertically at the rear of the upper part of the board reception portion 14 .
Board receiver fixing parts 16 are formed at the rear of the upper part of the support protrusion mounting parts 15, with a predetermined spacing in the front and rear, and in which embedded nuts are embedded.

The board receiver 2 has board receiving parts 14, 14.
mounting holes 21 having a spacing that corresponds to the front-to-back spacing of
21 is formed at the lower part of the front and rear ends, and supports the back surface of the left and right ends of the step board 3 on its upper surface.
2 and the left side plate 11 which is connected to the upper part of the left side plate 11 side (or upper sleeve cabinet 12 side) of the step board 22 and is brought into contact with the left and right end surfaces of the step board 3.
or the inner surface of the upper sleeve cabinet 12 from being damaged.

A holding part 24 is provided at the rear end of the mounting stage part 22 with a vertical groove for rotatably holding the end part of the board holding rod 5.

A stopper protrusion 25 is formed above the holding part 24 and projects inward from the rear end of the holding protrusion 23 to prevent the board holding rod 5 from slipping upward.

Reference numeral 26 denotes a fitting portion into which the end of the holding rod 5 is fitted when the step board 3 is used as a rear lower shelf.

The step board 3 is a rectangular plate, and its depth is shorter than that of the mounting portion 22.

Further, retaining rod mounting seats 6, 6 are screwed to the back surface of the left and right end portions of the central portion in the front-rear direction.

The holding rod mounting seat 6 has an insertion portion 61 in which the rotating portion 51 of the holding rod 5 (described later) is inserted and rotatably held in the left-right direction of the center portion, and one end of the rotating spring 7 of the holding rod 5 is fitted into the holding rod mounting seat 6. It has a fitting part 62 and a connecting hole 63.

The board holding rod 5 has a substantially U-shape formed by the rotating part 51 and supporting parts 52, 52 which are connected to the left and right ends of the rotating part 51, and the ends of the supporting parts 52, 52 are connected to the outside. Holding protrusions 53, 53 are formed which are bent toward the side and are rotatably held within the holding portion 24 of the board receiver 2.

The rotation spring 7 is a rotation part 51 of the board holding rod 5.
One end is fitted into and fixed to the fitting parts 62, 62 of the holding rod mounting seat 6, and the other end is held by the supporting parts 52, 52, and the board holding rod 5
is in a state of protruding downward with respect to the step board 3, so that a downward rotational force is constantly applied.

The present invention is constructed as described above, with board receivers 2,
2 are screwed together, and then the holding protrusions 53, 53 of the board holding rod 5 are attached to the holding parts 24, 2 of the board receivers 2, 2.
4, and place the left and right ends of the step board 3 on the mounting steps 22, 22. (Situation shown in Fig. 1) At this time, the board holding rod 5 is attached to the holding protrusions 53, 53.
is held by the holding parts 24, 24, so it does not rotate downward, and the rear part of the step board 3 is urged upward by the rotation spring 7, but the step board 3 does not rotate downward. By the weight of
The horizontal position is maintained.

When storing a chair in the seating area 1, push the chair toward the back plate 13 of the desk body with the end of the chair in contact with the front end of the step board 3, and the holding protrusion of the board holding rod 5 53, 53 is the holding part 24,
24, and the rear part of the step board 3 is urged to rotate upward by the rotation spring 7, so that the left and right ends of the front end of the step board 3 are held on the mounting steps 22, 22. While in contact with each other, the rear end portion rotates upward and moves rearward as the board holding rod 5 is displaced to the upright position, and eventually the back surface of the rear end portion becomes
A support projection mounting portion 15 having a height corresponding to the height of the board receiving portion 14 to which the board receiving portion 2 is attached.
It comes into contact with the support protrusion 17 provided in the holder and assumes an upright position.

(The state shown in the imaginary lines in FIGS. 1 and 3) In this position, the holding protrusions 53, 53 of the board holding rod 5 are held by the holding parts 24, 24, and the step board 3 is held by the rotation spring 7. , the front end is biased to move forward, but the weight of the chair maintains the upright position.

Next, when the chair is pulled out from the state shown by the imaginary line in Figure 1 to the seated state, as the chair moves forward,
Contrary to the above, as the front end of the step board 3 moves forward, the board holding rod 5 also moves forward, and at the same time, the rear end rotates downward, and eventually,
The state shown in FIG. 1 is reached.

That is, the step board 3 of the present invention is automatically displaced into a horizontal position and an upright position as the chair is moved in and out.

Further, the mounting height of the support protrusion 17 is determined by the mounting height position of the step board 3.

That is, when the step board 3 is attached to the board attachment part 14 at the highest position, the support protrusion 17 is also attached to the support protrusion attachment part 15 at the highest position.
be possessed by.

On the other hand, when the step board 3 is no longer needed, the board holders 2, 2 are screwed to the board holder fixing parts 16..., and the holding protrusions 53, 53 of the board holding rod 5 are
are positioned within the fitting portions 26, 26, and the rear end surface of the step board 3 is brought into contact with the front surface of the stopper protrusion 25, thereby being used as a rear lower shelf.

At this time, although the front end of the step board 3 is subjected to an upward rotational force, the step board 3 does not lift up due to its own weight, and the board holding rod 5 and the fitting portions 26, 26, Movement in the front-back direction is prevented by the stopper protrusions 25, 25.

In addition, in the embodiment, the desk main body is a top plate 1, a left side plate 11,
Although it is composed of a sleeve cabinet 12 and the like, it may also be a so-called flat desk with a right side plate instead of the sleeve cabinet 12.

Furthermore, although the board receiver 2 is composed of a mounting stage 22 and a protective protrusion 23, it may include only the mounting stage 23, and can be modified as appropriate without departing from the gist of the present invention. .

<<Effects>> As described above, the present invention is such that the upper part is rotatably held on the back surface of the substantially U-shaped central part in the front-rear direction of the step board, and the lower part is rotatably held on the back of the step board's approximately U-shaped central part in the front-rear direction. The board holding rod, which is held freely, is always applying a downward rotational force to the stepboard, so if a force is applied in the direction of pushing the stepboard backward, the board holding rod will rotate upward. As a result, the step board is lifted upward and at the same time the rear end portion is rotated upward, so that the step board automatically becomes an upright state.

Moreover, when the chair is pulled out, it automatically changes from the upright state to the horizontal state, contrary to the above.

In other words, there is no need to bend down into the seating area and place the stepboard in a horizontal position or in an upright position each time the chair is put in or taken out, which is very convenient.

[Brief explanation of the drawing]

The figures show one of the embodiments of the present invention, Fig. 1 is a vertical sectional view of the main part of the invention, Fig. 2 is a front view of a desk equipped with the invention, and Fig. 3 is A--A in Fig. 2. A-line sectional view,
FIG. 4 is a side view showing how the step board and board holding rod are attached, and FIG. 5 is a back view showing how the board holding rod and rotation spring are attached. 1... Seating section, 2... Board holder, 24... Holding section, 3... Step board, 5... Board holding rod.

Claims (1)

[Scope of utility model registration request] A board holder that is removably attached to the seating area of the desk body and whose mounting height can be changed, a step board that has both ends placed on the board holder, and approximately the center of the step board in the front and back direction. The upper part is rotatably held on the back side of the step board, and the lower part is rotatably held in a holding part formed at the rear end of the board receiver, and the board holding rod is attached to the step board. A step board mounting device for a desk, etc., characterized in that it is always biased to rotate downward.