JPH0464386B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an automatic on-floor device that can automatically store a device used on the floor in an under-floor storage chamber immediately below it, automatically close the lid, and also automatically complete the opposite operation. This relates to a device that appears and appears.

(Prior Art) When it is desired to effectively utilize a floor surface for multiple purposes, such as on a theater stage or at home, it is advantageous to store chairs and other floor devices under the floor.

The applicant has already filed an application (Japanese Unexamined Patent Publication No. 1-62563) for a device that achieves this purpose.

(Purpose) When the floor device is stored in the underfloor storage section, the floor cover is automatically blocked in conjunction with the lifting mechanism to provide a usable floor surface, and when the floor device is raised and installed, To provide an automatic retractable device in which a floor cover is automatically opened and held at a predetermined angle.

(Structure) The structure of the device of the present invention is such that the floor device is moved into and out of the storage section by a lift drive mechanism in the underfloor storage section formed directly below the above-mentioned storage section, and the underfloor storage section is provided with a rotating floor cover. In the device, a fixed frame is fixed along the movement direction of an elevating base that supports the floor device, and an elevating link is connected to the fixed frame via at least a pair of upper and lower connecting links to form a parallel link mechanism. At the same time, the upper end of the elevating link is pivotally connected to a connecting piece protruding from the lower surface of the rotating floor cover, and the lower end of the elevating link is connected to the upper surface of the base at the lowest position of the elevating base. The elevating link is supported in contact with the elevating link, and the outer surface of the elevating link is configured to contact the side of the elevating base during the elevating and lowering operation of the elevating base to prevent the elevating link itself from lowering.

Furthermore, it is effective to provide a roller at the lower end of the lifting link to reduce friction, and in order to further ensure that the lid closes only by its own weight, the lifting link or the lower connecting link makes contact with the bottom surface of the base. It is best to have hook boards connected to each other.

The device of the present invention is not limited to one rotating lid as in the embodiment shown in the figure, but can also be used to raise and lower a single lifting base by attaching lifting links symmetrically to a pair of rotating lids that open double doors. It is also possible to open and close the door automatically at the same time.

Hereinafter, a case where the underfloor storage item is a connected chair will be described.

(Example) Reference numeral 1 is an automatically foldable connecting chair, which is fixed to the upper surface of a base 2. Reference numeral 3 denotes a lifting mechanism for the base, which is provided in the underfloor storage room B, and includes a cross pantograph arm 4 and an electric jack 5 connected by a pivot shaft 6.
It consists of

The ends 7 and 8 on one side of the cross pantore arm are pivotally fixed to the lower surface of the base and the guide rail 9 7a and 8a, respectively, and the free ends 10 and 11 on the other side are respectively fixed to the roller 1.
It is equipped with 2,13.

The free end 11 of the pantograph arm is connected to and driven by the reciprocating rod 5a of the electric jack.

A fixed frame 14 is installed on the side wall of the underfloor storage room B at a position that avoids the operating range of the cross pantograph arm 4.
has been erected. Reference numeral 15 denotes a rotating floor cover, which is pivotally connected to a hinge 16 provided at the upper part of the fixed frame.

The fixed frame has a pair of connecting links 17, 18.
The elevating and lowering links 19 are pivotally connected in parallel through the two, forming a parallel link mechanism.

The upper end of the elevating link 19 is pivotally connected 21 to the lower surface of the floor cover via a connecting piece 20, and a guide roller 2 is provided at the lower end.
2 is provided. No, the pivot portion of the elevating link may be formed of a long hole.

The guide roller 22 is provided at a position where it contacts a part of the elevating base 2 or a plate member 23 fixed to the base.

Reference numeral 24 denotes a floor cover forced closing device, which includes a hook plate 25 at the lower end and a lower connecting link 18.
A part of the hinge is hanging down. 26 is a link for preventing swinging or regulating position.

The floor cover forced closing device 24 may be directly attached to the lower end of the elevating link 19. The floor cover forced closing device 24 is equipped with a compression spring 27 inside the cylinder 28 as shown in FIG. 5 in order to more completely close the floor cover.
It is also possible to attach the cover with an intervening member so that a downward spring force is always applied to the closing floor cover. The rotation angle of each articulating link and the relative position of the plate member and the guide roller and the side surface of the elevating link can be easily determined by design.

(Description of operation) When the electric jack 5 is driven in the state shown in FIG. 3, the elevating mechanism 3 is activated to raise the base 2. At the same time, the plate member 23 separates from the hook plate 25 and pushes up the elevating link 19 via the guide rollers 22.

The floor cover 15 is rotated as the elevating link rises.

The floor cover and each connecting link 17, 18 rotate through a maximum rotation angle θ=60° to 80°.

On the way, the connecting links 17 and 18 pass the horizontal point H and then approach the fixed frame 14 side, so the roller 22 gradually moves from the upper end of the plate member to its side surface 23a.
Move to.

When this state is reached, the connecting links 17, 18 and the floor cover have reached their maximum rotation angles and are in the state shown in FIG. 4.

The base continues to rise, and the side surface 2 of the plate member 23
3a slides on the outer surface 19a of the elevating link or is guided by the rolling auxiliary wheel 19b and rises to a predetermined position while preventing the elevating link from descending.
It becomes as shown in Fig. and Fig. 2.

When the chair 1 is stored under the floor, the operation is opposite to that described above, and the floor cover 15 is moved from the time when the guide roller 22 moves to the upper end surface of the plate member 23 in the process of lowering the chair while automatically folding. Closing is started, and the lower end of the plate member comes into contact with the hook plate 25 to completely close it and return to the state shown in FIG. 3.

(Effects) As described above, the device of the present invention automatically raises the floor device that is stored in the underfloor storage room B and is closed with a floor cover to place it on the floor, and also automatically moves this floor device into the storage room. It lowers and automatically closes the floor cover, and since the floor cover is mechanically linked with the lifting base, it closes completely, and the safety of the closed floor cover is extremely high, so it is suitable for theaters and other public facilities. It is fully usable.

[Brief explanation of the drawing]

Fig. 1 is a front view of the lifting mechanism seen from the back side of the chair when it is raised, Fig. 2 is a side view taken along line A-A in Fig. 1, Fig. 3 is a side view of the chair in the lowered and stowed state, and Fig. 4
The figure is a side view of an intermediate process, and FIG. 5 is a partial sectional view showing an example of a floor cover closing device. 19 is a lifting link, 20 is a connecting piece, 22 is a guide roller, 23 is a plate member, 24 is a floor cover closing device, 25
is a hook board.

Claims (1)

[Claims] 1. In an automatic ejecting and retracting device, the above-mentioned on-floor device is moved into and out of the above-mentioned storage section by an elevating drive mechanism in an under-floor storage section formed directly below the above-mentioned storage section, and the above-mentioned under-floor storage section is provided with a rotary floor cover. A fixed frame is fixed along the movement direction of the elevating base, and elevating links are connected to the fixed frame via at least a pair of upper and lower connecting links to form a parallel link mechanism, and the elevating links are The upper end is pivotally connected to a connecting piece protruding from the lower surface of the rotating floor cover, and the lower end of the elevating link is supported in contact with the upper surface of the elevating base at the lowest position of the elevating base, An automatic ejecting and retracting device for a floor device, wherein an outer surface of the elevating link is configured to contact a side of the elevating base during the elevating and lowering operation of the elevating base to prevent the elevating link itself from descending.