JP6892665B1 - Floor lifting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To partially move the floor in a room to make a step up and down as a spectator seat, a floor which does not require many jacks, has a simpler mechanism, has a simple structure, and can be manufactured inexpensively. To provide an elevating device. SOLUTION: A base frame 1 and a top frame 3 of a rectangular frame are supported by a cross strut 6 whose center is axially attached to an intermediate frame 2, and an end portion of the cross strut 6 is slid to the base frame 1 and the top frame 3. The electric jacks 4 and 5 were provided between the base frame 1 and the intermediate frame 2 and / or between the top frame 3 and the intermediate frame 2. [Selection diagram] Fig. 1

Description

The present invention relates to an elevating device for elevating and lowering on the floor of a house, a restaurant, a mini meeting place, or the like.

As a movable floor that is partially provided not only in multipurpose halls and studios but also in ceremonial halls, cafeterias, etc., the height of the movable floor can be adjusted independently for each block. In addition to using a stage or a flat floor, the following patent documents provide a variety of floor arrangements, such as providing a staircase consisting of a movable floor between the lower floor and the upper floor in the hall. As shown in 1.
Japanese Patent No. 5166083

In Patent Document 1, the floor is divided into a plurality of blocks having a predetermined shape, and any one of the blocks is made into a plurality of movable floor bodies provided with height-adjustable elevating means.

As a component of such a movable floor, the inventor previously proposed and obtained a patent for a device as shown in the following patent document.
Japanese Patent No. 6376712

The above-mentioned Patent Document 2 is used for a live house, a dance hall, a dining venue, etc., and by using an electric jack to partially move the floor in the room to make a step up and down as a spectator seat. It is a small-scale concert hall that can be formed at low cost without complicated structure with a simple power mechanism.

As shown in FIGS. 6 to 9, this is composed of a base frame 21, an intermediate frame 22, and a top frame 23 provided at the bottom of the pit 20, and a finishing floor base 26 is attached to the top frame 23.

In the base frame 21, a rising portion 27 made of a pillar body was erected from the corner, and a slide rail 31 which is a stainless steel slide rail was provided here. Further, the intermediate frame 22 is assembled in a grid shape, and a vertical frame 28 for touching is provided at the end of the horizontally long girder material. The top frame is made of 23 large pulls and girders that serve as joists, and a hanging portion 29 is formed at the end.

The finishing floor base 26 to be placed on the top frame 23 is a rectangular (square) flat surface having a side of 1000 to 1500 mm (1150 mm in the figure) as a movable floor portion, and is made of wood as a part of the floor board in the room. It may have a box shape in which a skirt portion 26a for blindfolding is formed.

The electric jack 24 is provided on the base frame 21 as a first-stage electric jack, and the intermediate frame 22 is vertically supported by the electric jack 24, and the electric jack 25 is provided on the intermediate frame 22 in the second stage. The top frame 23 was supported by the second-stage electric jack 25 so as to be able to move up and down.

Here, the first stage of the electric jack 24 means that it is located on the lower side, and the second stage of the electric jack 25 means that it is located on the upper side of the electric jack 24 of the first stage. Is.

The number of these electric jacks 24 and 25 is not particularly limited, but it is desirable to install two of them side by side as shown in the figure in consideration of the left-right balance.

For the electric jack 24 and the electric jack 25, an in-vehicle electric pantograph jack used for changing tires of a car was used. Although not shown, a controller is attached at 12 V, 120 mm to 370 mm, and a maximum load of 1.0 t.

Further, the electric jack 24 and the electric jack 25 using these in-vehicle electric pantograph jacks are attached by bolts, nuts, or the like so as to be replaceably attached.

Further, a slide rail 31 is provided on the touch-preventing vertical frame 28 provided at the end of the intermediate frame, and is provided on the slide rail 31 of the rising portion 27 of the base frame 21 and on the hanging portion 29 of the top frame 23. Engage with the slide rail 31.

To use it, operate the controller (not shown) to drive the first-stage electric jack 24 and extend it to raise the intermediate frame 22, and drive the second-stage electric jack 25 to drive the top frame 23. And the finishing floor 26 is raised.

In this way, the movable floor part rises up and there is a step with the floor of the non-movable floor part in the front row, so it is possible to pass through a state like a hall, when performing a mini concert or when installing a theater It is possible to create a suitable audience seat. Further, the reverse operation is performed to lower the raised movable floor portion.

The movable floor of Patent Document 2 is a simple power mechanism for making a part of the floor in the room movable in order to make a step up and down as a spectator seat, and the structure is not complicated and can be formed inexpensively. Since electric jacks are provided in a plurality of upper and lower stages, at least four electric jacks are required, and there is a risk of unbalance due to a drive difference in operation with one controller.

An object of the present invention is to solve the inconvenience of the above-mentioned conventional example, and to make a part of the floor in the room movable in order to make a step up and down as a spectator seat, it does not require many jacks, and the movable floor position accuracy ( The purpose is to provide a floor elevating device that can be manufactured at low cost with a simpler mechanism and a structure that is not complicated, rather than being able to automatically secure (vertical / horizontal).

In order to achieve the above object, in the present invention according to claim 1, the base frame of the rectangular frame and the top frame of the rectangular frame are supported by cross columns pivotally attached to the center of each side of the intermediate frame of the rectangular frame. The gist is that the end of the cross column is slidly engaged with the base frame and the top frame, and an electric jack is provided between the base frame and the intermediate frame and / or between the top frame and the intermediate frame.

According to the first aspect of the present invention, if the electric jack is driven to change the distance between the base frame and the intermediate frame, or between the top frame and the intermediate frame, the angle of the cross strut changes, whereby the angle of the cross column changes. The intermediate frame can be raised or lowered with respect to the base frame, and the top frame can be raised or lowered with respect to the intermediate frame, and as a result, the floor plate provided on the top frame can be raised or lowered.

By using the cross strut as a bearing member in this way, stable ascent and descent can be performed with a few electric jacks.

The main power movable part is narrowed down to only one point in the center and moved up and down. The outer frame passively receives the stress and moves up and down. The upper frame and the lower frame move in parallel by inserting cross columns on the outer peripheral surfaces on all sides. Furthermore, the four sides are at the same level because the adjacent sides are combined. As a result, the position accuracy of the movable floor can be ensured.

The movable floor can be raised and lowered using a simple means called an electric jack. Compared to the case where the electric jack is provided in one step above and below, the load on the cross column can be reduced when the electric jack is provided in two steps. You will be able to use a cross strut. Further, by providing the electric jack in two stages, it is possible to obtain a desired undulating height as a movable floor even with a relatively small stroke of the electric jack itself.

In this way, according to the present invention, by raising and lowering the floor, it is possible to obtain a good shape by the stage and the stepped audience seats and form an ideal small-scale concert hall.

The gist of the present invention according to claim 2 is that the slide engagement of the end of the cross strut with the base frame and the top frame is performed by providing a guide roller at the end of the cross strut.

According to the second aspect of the present invention, the end of the cross strut is slidly engaged with the base frame and the top frame, and at that time, the guide roller enables smooth sliding without frictional resistance.

The gist of the present invention according to claim 3 is that the electric jack is an in-vehicle electric pantograph jack.

According to the third aspect of the present invention, a controller is also attached by using an in-vehicle electric pantograph jack (for example, 12 V, 120 mm to 370 mm, maximum load 1.0 t) used for changing tires of a car or the like. An inexpensive and easy-to-use electric jack can be obtained.

According to the fourth aspect of the present invention, the lateral position holding arm for holding the center of the lateral position has a length of 1/4 of the cross strut, and this is 1/4 from the center of the base frame and the top frame and the end of the cross strut. The gist is to bridge to 4 places with a shaft.

According to the fourth aspect of the present invention, since the end of the cross column is slidably engaged with the base frame and the top frame, the base frame and the top frame may be laterally displaced. By providing it, the center of the lateral position can be maintained and lateral displacement can be prevented.

In particular, since the horizontal position holding arm is 1/4 of the length of the cross strut, the length from the central shaft attachment point to the end of the cross strut and the length between the shaft attachments at both ends of the horizontal position holding arm. The dimensions are the same. As a result, an isosceles triangle having the same length as the side formed by the length of 1/4 of the cross strut and the length of the lateral position holding arm can be formed, and the vertical position (up 90 °) can be maintained.

As described above, the floor elevating device of the present invention does not require many jacks to partially move the floor in the room in order to make a step up and down as a spectator seat, and the movable floor position accuracy ( It is a simpler mechanism than the one that can automatically secure (vertical / horizontal), and the structure is not complicated and can be manufactured at low cost.

In addition, the position accuracy of the moving floor can be easily maintained. It does not require a pop-out mechanism with a large member, and because the pop-out can be reduced, the horizontal level can be maintained with a small member, and it can be manufactured at low cost.

It is a perspective view of the state after ascending which shows one Embodiment of the floor elevating device of this invention. It is a perspective view of the state before ascending which shows one Embodiment of the floor elevating device of this invention. It is a top view which shows 1 Embodiment which omitted the electric jack in the floor elevating device of this invention. It is a side view which shows 1 Embodiment which omitted the electric jack in the floor elevating device of this invention. It is sectional drawing which shows 1 Embodiment which omitted the electric jack in the floor elevating device of this invention. It is a vertical sectional side view of the movable floor part of the combined small-scale concert hall which shows the conventional example in the raised state. It is a cross-sectional plan view of the movable floor part of the combined small-scale concert hall which shows the conventional example. It is a vertical sectional front view of the movable floor part of the combined small-scale concert hall showing a conventional example in a non-elevated state. It is a partially cutout plan view which shows the use state of the movable floor part of the combined small-scale concert hall which shows the conventional example.

Hereinafter, embodiments of the present invention will be described in detail with respect to the drawings. FIG. 1 is a perspective view of a floor elevating device of the present invention in a post-elevation state, and FIG. 2 is a perspective view of a pre-elevation state of the same as above, from a metal base frame 1, an intermediate frame 2, and a top frame 3. A finishing floor base is attached to the top frame 3 although not shown.

In the illustrated example, the base frame 1, the intermediate frame 2, and the top frame 3 are rectangular frames (square frames) arranged with horizontal braces crossed inside, and have substantially the same size. It is not limited to this.

In the figure, 6 is a cross strut in which two bar members are axially mounted in the center. The cross strut 6 is pivotally mounted in the center of each side of the intermediate frame 2, and the cross strut 6 is used as a base frame 1 and a top frame 3. To accept.

The end of the cross column 6 is slidably engaged with the base frame 1 and the top frame 3, and slits 7 as guide holes are formed on each side of the base frame 1 and the top frame 3 separately on the left and right. A pin 8 provided at the end of the cross column 6 is engaged, and a guide roller 9 having a built-in bearing is provided around the pin 8 as an axis, and the guide roller 9 is attached to each side of the base frame 1 and the top frame 3. To make it slide.

Each side of the base frame 1 and the top frame 3 is a channel member having a U-shaped cross section or an angle member having an L-shaped cross section, and functions as a rail for accommodating the guide roller 9.

An electric jack was provided between the base frame 1 and the intermediate frame 2 and / or between the top frame 3 and the intermediate frame 2.

The intermediate frame 2 is also arranged with horizontal braces crossed inside like the base frame 1 and the top frame 3, and the electric jack 4 and the electric jack 5 are attached to the center of the rectangular frame which is the intersection of these horizontal braces.

For the electric jack 4 and the electric jack 5, an in-vehicle electric pantograph jack used for changing tires of a car was used. Although not shown, a controller is attached at 12 V, 120 mm to 370 mm, and a maximum load of 1.0 t.

Further, the electric jack 4 and the electric jack 5 using these in-vehicle electric pantograph jacks are attached by bolts, nuts, or the like so as to be replaceably attached.

The electric jack 4 and the electric jack 5 may be equipped with only the upper electric jack 4, but if they are provided in the upper and lower stages together with the electric jack 5, the load applied to the cross strut 6 can be reduced, and the cross strut 6 can be attached. The constituent bar members can be made thin.

Further, a horizontal position holding arm 10 for holding the center of the horizontal position was bridged to the center of the sides of the base frame 1 and the top frame 3 and 1/4 from the end of the cross column 6 by pinning. .. The lateral position holding arm 10 is also made of a bar member.

The lateral position holding arm 10 is a small arm with a bar thinner than the cross strut 6, but at a position of 1/2 of the length between the shaft-attached portion of 1/2 of the cross strut 6 and the shaft-attached portion at the end. If the lateral position holding arm 10 has a length equal to 1/4 of the length of the cross strut 6 by being axially attached, the length of the side and the lateral position holding arm formed by the length of 1/4 of the cross strut It is possible to construct an isosceles triangle with the same length and maintain a vertical position (up 90 °).

Next, the usage will be described. The floor elevating device of the present invention constitutes a movable floor, and is provided by attaching a floor plate, which is a finishing floor, to the top frame 3 as a part of the floor in the room, and a plurality of floor elevating devices can be provided side by side. ..

The floor level is 0 to 600 mm, and as shown in FIG. 9, a chair 30 serving as an audience seat can be installed on the finishing floor.

If the controller (not shown) is operated to drive the first-stage electric jack 4 and extend it, the intermediate frame 2 rises, and if the second-stage electric jack 5 is driven, the top frame 3 and finishing are used. The floor rises.

The first-stage electric jack 4 and the second-stage electric jack 5 may be driven individually or simultaneously.

As the distance between the base frame 1 and the intermediate frame 2 and between the top frame 3 and the intermediate frame 2 increases, the ends of the cross column 6 slide and fold, and the X shape becomes vertically long.

At that time, the lateral position holding arm 10 also stands up, but this is because the end portion of the cross column 6 is slidably engaged with the sides of the base frame 1 and the top frame 3, so that the base frame 1 and the top frame 3 are laterally displaced. It prevents you from doing it,
Since one end of the lateral position holding arm 10 is connected to the center of the sides of the base frame 1 and the top frame 3 by a shaft attachment, lateral displacement can be prevented.

In this way, the movable floor part rises up and there is a step with the floor of the non-movable floor part in the front row, so it is possible to pass through a state like a hall, when performing a mini concert or when installing a theater It is possible to create a suitable audience seat.

Further, the reverse operation is performed to lower the raised movable floor portion.

1 ... Base frame 2 ... Intermediate frame 3 ... Top frame 4, 5 ... Electric jack 6 ... Cross support 7 ... Slit 8 ... Pin 9 ... Guide roller 10 ... Horizontal position holding arm 20 ... Pit 21 ... Base frame 22 ... Intermediate frame 23 ... Top frame 24, 25 ... Electric jack 26 ... Finishing floor 26a ... Skirt 27 ... Rising part 28 ... Vertical frame for touch prevention 29 ... Hanging 30 ... Chair 31 ... Slide rail

Claims (4)

The base frame of the rectangular frame and the top frame of the rectangular frame are supported by a cross strut centered on the center of each side of the intermediate frame of the rectangular frame, and the end of the cross strut is slidly engaged with the base frame and the top frame. A floor lifting device characterized in that an electric jack is provided between the base frame and the intermediate frame and / or between the top frame and the intermediate frame. The floor lifting device according to claim 1, wherein a guide roller is provided at the end of the cross strut for slide engagement with the base frame and the top frame at the end of the cross strut. The floor lifting device according to claim 1 or 2, wherein the electric jack is an electric pantograph jack for a vehicle. The horizontal position holding arm for holding the center of the horizontal position is set to 1/4 of the length of the cross strut, and this is bridged to the center of the base frame and the top frame and 1/4 from the end of the cross strut by shaft attachment. The floor elevating device according to any one of claims 1 and 3.

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