JPH10325256A - Underfloor storage mechanism of chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underfloor storage mechanism of a chair capable of preventing the fall of a fallen object from a gap between floor cover and fixed floor section and the view of a lower direction from the gap while making no obstruction to an opening and closing mechanism of the floor cover in the underfloor storage mechanism of the chair. SOLUTION: Uneven step sections 25 and 26 are respectively formed in a fixed floor section 23 constituting a floor surface upward of a box frame storing a chair and an edge opposed to the floor cover 24, and when the floor cover 24 is in a closing position, the uneven step section 26 of the floor cover 24 is overlapped from below the uneven step section 25 of the fixed floor section 23. Instead of processing the fixed floor section and edge opposed to the floor cover, a plate member is fixed along the edge of the lower surface of the floor cover.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an underfloor storage mechanism for a chair used for a grandstand in a multipurpose hall.

[0002]

2. Description of the Related Art An underfloor accommodation mechanism for a chair used for a grandstand in a multipurpose hall has been proposed in, for example, Japanese Patent Application No. 6-212286 filed by the present applicant.

FIGS. 3 and 4 show this Japanese Patent Application No. 6-2112.
No. 86 shows a chair underfloor accommodation mechanism proposed.

[0004] As shown in the figure, a box frame 1 formed under the floor accommodates a chair 2, and has a fixed floor portion 3 and a floor lid 4 which can be opened and closed at the top.

The chair 2 is composed of a plurality of persons integrally joined in a lateral direction (a direction perpendicular to the plane of FIG. 3 and FIG. 4). The chair 2 is composed of a backrest 2B and a foldable seat surface 2A. Through a floor member 6 having substantially the same planar shape and area as the floor lid 4.

As means for raising and lowering the floor member 6 together with the chair 2, a screw rod 8 is disposed inside the box frame 1 in the vertical direction with the upper end inclined to the rear of the chair 2. Is rotationally driven via a speed reducer 16 by an electric motor 9 provided at the bottom of the motor. The floor member 6 is fixed to a travel nut 7 screwed to the screw rod 8 and moves up and down with rotation of the screw rod 8. The elevation of the floor member 6 is guided via a guide 10 arranged in parallel with the screw rod 8.

The chair 2 and the floor member 6 move between the storage position in the box frame 1 shown in FIG. 3 and the deployed position on the floor shown in FIG.

On the other hand, the floor lid 4 is in a closed position shown in FIG.
It moves between the opening positions shown in FIG. In this closed position, the floor lid 4 is disposed substantially horizontally with the fixed floor 3 and forms a floor integrally with the fixed floor 3. On the other hand, at the opening position, the floor cover 4 is stored in the box frame 1 in a substantially upright state, and an opening is formed on the floor surface beside the fixed floor portion 3 after the floor cover 4 comes out. The chair 2 and the floor member are raised through the opening.

The movement of the floor cover 4 is performed by the box frame 1
Are guided by guides 11 and 12 disposed on both side surfaces of the guide.
The guide 11 is disposed so as to curve downward from the rear of the upper end of the box frame 1 toward the front. on the other hand,
The guide 12 is disposed vertically at the front of the box frame 1 with the upper end slightly inclined forward. And floor cover 4
Rollers 13 attached to both sides of the rear of the guide 1
1 and a roller 14 attached to an arm 15 fixed to the front of the floor cover 4 is fitted into the guide 12 and rolls, so that the floor cover 4 is guided. I have.

As a means for moving the floor cover 4, a screw rod 17 is vertically arranged along the front surface of the box frame 1, and a travel nut 18 screwed to the screw rod 17 is attached to the tip of the arm 15. Is supported. Thus, when the screw rod 17 is driven to rotate by the electric motor 19 provided at the bottom of the box frame 1 via the speed reducer 20, the arm 15 is moved up and down along the guide 12 via the travel nut 18. The floor cover 4 moves together with the arm 15.

[0011]

In the underfloor storage mechanism for such a chair, as described above, the floor cover 4 in the closed position constitutes the floor surface integrally with the fixed floor portion 3, so that the floor cover 4 is in the closed position. Ideally, the floor cover 4 and the fixed floor portion 3 are continuous without any gap.

However, if the gap between the floor cover 4 and the fixed floor portion 3 is completely eliminated, the opening and closing operation of the floor cover 4 becomes mechanically impossible. As shown in FIG. 5, the floor lid 4 and the fixed floor 3
A gap 21 has been created between them. For this reason, even when the floor cover 4 is closed, there is a possibility that a thin falling object 22 such as a pamphlet may fall into the box frame 1 from the gap 21. In addition, since the floor cover 4 and the box frame 1 below the fixed floor 3 can be seen through the gap 21, a person who sees the gap 21 from above the floor may feel useless anxiety.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem. In a chair underfloor storage mechanism, a gap between a floor cover and a fixed floor portion is provided while not obstructing an opening / closing mechanism of the floor cover. It is an object of the present invention to provide a device that can prevent a falling object from falling from falling and seeing a lower portion from a gap.

[0014]

According to a first aspect of the present invention, there is provided a box frame provided below a fixed floor portion, an opening for raising and lowering the chair formed on the fixed floor portion, and the opening portion when the chair is stored. An opening / closing floor cover that fits from below, a means for moving the chair between a use position on the box frame and a storage position inside the box frame, and a closed position for closing the opening with the floor cover. Means for moving between the opening position inside the box frame and the under-floor storage mechanism of the chair, wherein the upper surface side of the fixed floor portion is protruded from an edge along the opening of the fixed floor portion. A step portion is formed, and a step portion is formed at the edge of the floor cover so as to protrude the lower surface side of the floor cover, and the step portion formed on the fixed floor portion when the floor cover is in the closed position and the step portion Steps formed on the floor lid It was to overlap in.

According to a second aspect of the present invention, a box frame provided below the fixed floor portion, an opening for raising and lowering the chair formed on the fixed floor portion, and fitted into the opening portion from below when the chair is stored. A retractable floor lid, means for moving the chair between a use position on the box frame and a storage position inside the box frame, and a closed position for closing the opening of the floor lid and an opening inside the box frame. In a chair underfloor storage mechanism provided with means for moving the floor cover, a plate member for closing a gap with the opening is attached over the entire periphery of the lower edge of the floor lid.

[0016]

According to the first aspect of the present invention, when the chair is used, the floor cover is moved to the open position, and the chair is raised to the use position on the opening from which the floor cover comes out. Is lowered to the storage position in the box frame and stored, the opening is closed by the floor cover that has moved to the closed position, and the floor surface is integrally formed by the floor cover and the fixed floor portion. In this case, a step is formed on each of the opposed edges of the fixed floor and the floor lid, and when the floor is in the closed position, these steps overlap with each other, and the floor is located between the fixed floor and the floor. The space directly below the gap created to secure the opening and closing operation of the lid is closed by the step of the floor lid, so that falling objects into this gap are received by the step of the floor lid, and the box frame It does not fall into the inside, nor does the inside of the box frame under the floor peep through this gap, and the viewer does not feel useless anxiety. In this case, the step of the floor lid is
Because it is configured to overlap from below the step of the fixed floor, in the opening and closing operation where the floor lid moves below the fixed floor,
The step portion of the floor lid and the fixed floor portion do not interfere with each other.

In the second invention, the plate member attached along the edge of the lower surface of the floor cover closes directly below the gap created between the fixed floor portion and the floor cover. Can be prevented, and the underfloor can not be seen through the gap. Further, since the plate member is on the lower surface side of the floor lid, it does not interfere with the opening and closing operation of the floor lid.

[0018]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view showing a fixed floor portion 23 and a floor lid 24 according to an embodiment of the present invention. This embodiment is the same as the conventional underfloor storage mechanism shown in FIGS. 3 and 4 except that the fixed floor 3 and the floor lid 4 are changed to the fixed floor 23 and the floor lid 24, respectively. Hereinafter, the configuration of the fixed floor portion 23 and the floor lid 24 shown in FIG. 1 will be mainly described.

As shown in FIG. 1, in the present embodiment, a step 25 is formed at the edge of the fixed floor 23 and a step 26 is formed at the edge of the floor lid 24. At times, the gaps 21 between the fixed floor portion 23 and the floor lid 24 are closed by the overlapping of the step portions 25 and 26.

More specifically, the step 25 protrudes from the upper surface 23A of the edge of the fixed floor 23 over the entire circumference, while the lower surface 23B below the step 25 is cut off. . In contrast, the floor cover 24
From the lower surface 24B side of the edge of
Protrudes, and the upper surface 24A side above the step portion 26 is cut off.

Thus, when the floor cover 24 is closed, the steps 25 and 26 are overlapped in the gap 21 between the edge of the fixed floor portion 23 and the edge of the floor cover 24. For this reason, the falling object 22 that has fallen from the gap 21
And is not dropped below the floor lid 24. Further, the space directly below the gap 21 is closed by the step 26, so that the space 21 is not seen from below the floor lid 24.

In this case, since the step 26 of the floor cover 24 overlaps the step 25 of the fixed floor 23 from below, the floor cover 24 is fixed to the fixed floor 3 when the floor cover 24 is opened and closed. , Even if it moves from below, the step 25 and the step 26 do not interfere with each other. That is, the steps 25 and 26 do not hinder the opening and closing operation of the floor lid 4.

Next, the operation will be described.

According to the chair underfloor storage mechanism of the present invention, the floor lid 4 is stored in a closed position horizontally arranged with the fixed floor 3 as shown in FIG. Between the open positions (see FIG. 4). When the chair 2 is used, the floor cover 24 is moved to the opening position,
The chair 2 rises from below into the opening formed in the portion where the floor lid 24 has come out. On the other hand, when the chair 2 is not used, the chair 2 is housed in the box frame 1 below the fixed floor portion 23 and the floor cover 24, and the floor cover 24 and the fixed floor portion 23 that have moved to the closed position are integrated with the floor. Make up the surface.

In this case, a small gap 21 is formed between the fixed floor portion 23 and the floor cover 24 in order to secure the opening and closing operation of the floor cover 24. On the other hand, according to the present invention, steps 25 and 26 are formed at the edges of the fixed floor 3 and the floor lid 4, respectively, and these steps 25 and 26 intersect each other. The step 26 exists directly below the gap 21.

Therefore, a thin falling object 22 from the gap 21
Is dropped by the step 26 and does not fall into the box frame 1 below the floor lid 4. In addition, since the area directly below the gap 21 is closed by the step 26, the inside of the box frame 1 below the floor is not seen from above the floor.
The viewer does not feel uselessly anxious.

Since the step 26 of the floor cover 24 overlaps from below the step 25 of the fixed floor 23, the opening and closing operation in which the floor cover 24 moves below the fixed floor 23 causes a step. The parts 25 and 26 do not interfere with each other.

FIG. 2 shows another embodiment of the present invention.

In this embodiment, a plate member 31 is fixed to the underfloor storage mechanism of the chair shown in FIGS. 3 and 4 over the entire periphery of the edge of the lower surface 4B of the floor cover 4. According to this, the fallen object 22 that has fallen from the gap 21 is supported by the plate member 31 and is prevented from falling below the floor lid 4, and the plate member 31 blocks the space directly below the gap 21 from the gap 21. The floor lid 4 from the floor
There is no need to look down. The plate member 31 fixed from the lower surface 4B side of the floor cover 4 does not interfere with the opening and closing operation of the floor cover 4. Also, in this case,
As in the embodiment of FIG. 1, the fixed floor portion 3 and the floor cover 4 do not need to be particularly processed.

[0031]

According to the first aspect of the present invention, a step is formed on each of the opposite edges of the fixed floor and the floor lid, and when the floor is in the closed position, these steps overlap with each other, The space directly below the gap created between the fixed floor and the floor lid to secure the opening and closing operation of the floor lid is closed by the step part of the floor lid. It is received by the step of the lid and does not fall into the box frame, and the inside of the box frame under the floor does not peep out from this gap, and does not give the viewer a sense of unnecessary anxiety . Also,
In this case, since the step portion of the floor lid overlaps from below the step portion of the fixed floor, in the opening / closing operation in which the floor cover moves below the fixed floor portion, the step portion of the floor lid and the fixed floor portion is moved. They do not interfere with each other.

According to the second invention, the plate member attached along the edge of the lower surface of the floor lid closes directly below the gap created between the fixed floor portion and the floor lid, so that the falling object from the gap is removed. Of the floor can be prevented, and the underfloor can not be seen through the gap. Further, since the plate member is on the lower surface side of the floor lid, it does not interfere with the opening and closing operation of the floor lid.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing another embodiment.

FIG. 3 is a sectional view showing a basic configuration of a chair underfloor storage mechanism.

FIG. 4 is a sectional view of the same.

FIG. 5 is a cross-sectional view showing a configuration of a fixed floor portion and a floor cover of a conventional underfloor storage mechanism of a chair.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box frame 2 Chair 3 Fixed floor part 4 Floor lid 7 Travel nut 8 Screw rod 9 Electric motor 17 Travel nut 18 Screw rod 19 Electric motor 21 Gap 22 Falling object 23 Fixed floor part 24 Floor lid 25 Step part 26 Step part 31 Plate member

Continuing on the front page (72) Inventor Yoshimasa Nakajima 2-4-1 Hamamatsucho, Minato-ku, Tokyo World Trade Center Building Kayaba Industry Co., Ltd. (72) Inventor Hiroto Imaizumi 2-chome Hamamatsucho, Minato-ku, Tokyo No. 1 World Trade Center Building Kayaba Industry Co., Ltd.

Claims (2)

[Claims] 1. A box frame provided below a fixed floor portion, an opening for raising and lowering a chair formed in the fixed floor portion, and an openable / closable floor fitted into the opening portion from below when the chair is stored. Means for moving the chair between a use position on the box frame and a storage position inside the box frame; and a cover between the closed position for closing the opening and the open position inside the box frame. Means for moving under the floor, wherein a stepped portion is formed so as to protrude the upper surface side of the fixed floor portion at an edge along the opening of the fixed floor portion, and A step portion is formed at the edge of the lid so as to project the lower surface side of the floor cover, and when the floor cover is in the closed position, the step portion formed on the fixed floor portion and the step portion formed on the floor cover are mutually separated. So that they overlap Under-floor storage mechanism of the chair, characterized in that. 2. A box frame provided below the fixed floor, an opening for raising and lowering the chair formed in the fixed floor, and an openable / closable floor fitted into the opening from below when the chair is stored. Means for moving the chair between a use position on the box frame and a storage position inside the box frame; and a cover between the closed position for closing the opening and the open position inside the box frame. And a means for moving under the floor, wherein a plate member for closing a gap with the opening is attached over the entire periphery of the lower edge of the floor lid. .