JPH0449331Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a floor plate that supports a part of the floor so that it can be raised and lowered, and that allows the floor to be raised and lowered to create a step-like shape or to provide seating. Regarding equipment.

[Prior Art] Facilities such as gymnasiums are generally used with wide floor surfaces, but when accommodating spectators, a flat floor restricts visibility and cannot accommodate a large number of spectators. Therefore, facilities such as gymnasiums have been equipped with retractable, step-like movable seats in consideration of two possibilities: when using the floor surface with a wide open space and when accommodating spectators. Examples have become known.

These movable seats are made of individual seats of different heights that can be moved back and forth, and are connected in order from the shortest to the rear.When in use, the first, shortest seats are pulled out and extended into a staircase shape. Each unit can be used as a viewing seat, and when not in use, the short units can be stored under the next car body, and can be folded down one by one, reduced to a shelf, and placed against a wall, or stored inside the wall. The facility can be used for multiple purposes by expanding and contracting the bleachers.

However, even when these movable seats are deflated, they still occupy at least the width and floor space of a single seat, so at least a corresponding storage area should be planned in front of the wall or inside the wall. This posed the problem of narrowing the effective area of the floor surface. In addition, in the case of these movable seats, there were problems such as damage to the floor surface due to the back and forth movement of the seats by rolling wheels on a smooth floor surface, and high manufacturing costs due to the complicated structure.

For this reason, in recent years, in addition to raising and lowering a part of the floor itself and using the entire floor as a flat floor, a part of the floor has been raised to a desired height to create a three-dimensional structure. As a result, it has been proposed to convert the floor itself into a seat or the like. For example, JP-A-62-
An example is the movable floor described in Japanese Patent No. 13665.

The movable floor disclosed herein has a floor section consisting of three elongated divided bodies, and has drawbacks such as the problem of specifying its movement and the problem of a complicated structure, which hinders its versatility.

[Problems to be solved by the invention] In view of the defects of the movable floor related to the above-mentioned existing proposals, the present invention has been researched and developed in order to solve the problems and improve handling and manufacturability by creating a simple structure. It is something that In particular, this invention allows a part of the floor surface to be raised to any height, making it possible to form a level difference that suits the purpose of use, and by installing multiple devices, it is possible to freely create any level difference. The purpose of this paper is to propose a floorboard lifting device that can be set to

[Means for solving the problem] That is, the present invention was made based on the above-mentioned purpose, and its features include a movable floor plate that can be raised and lowered, and a device located below the movable floor plate that keeps the floor plate horizontal at all times. A height provided with a support means for supporting, a push-up means for pushing up the lower surface of the movable floor plate to move it upward, and a restraint release means for holding the pushed-up movable floor plate at a desired height and releasing this holding state. a floor board lifting device comprising a holding means, wherein the floor board is pushed up by the pushing up means to raise the floor board to a desired height, while the holding means holds the floor board at the raised position;
Furthermore, it is an object of the present invention to provide a floor board lifting and lowering device in which, when it is necessary to lower the floor board, the above-mentioned holding state is released by a restraint release means and the floor board is lowered to an outside floor position. To further explain this invention in detail, the present invention includes a movable floor board that can be raised and lowered, a support means for horizontally supporting the movable floor board at all times, a pushing means for raising the movable floor board, and a movable floor board that can be raised and lowered to any desired height. A floorboard elevating device is provided with a height holding means having a restraint release means for releasing the restraint holding state, the height holding means being rotatable from the lower surface of the movable floorboard. It is composed of a support rod that hangs down and has a plurality of locking claws along the longitudinal direction on the side surface in the middle of its length, and a lock member that has a claw that is hooked to the locking claw, and the above-mentioned claw is always attached to the locking claw. is engaged with the support rod to restrain the descending of the support rod and maintain the height of the movable floor board, while when releasing the support rod, the support rod is rotated to remove the locking pawl from the claw of the locking member and allow the movable floor board to descend. An object of the present invention is to provide a floor plate lifting device characterized by the following features.

Next, an embodiment illustrating this invention will be described in detail, and its features will be specifically explained.

[Example] Fig. 1 is a plan view of the device according to the present invention, Fig. 2 is a longitudinal cross-sectional view taken along the line of the upper figure, and Fig. 3 is a cross-sectional view taken along the line of Fig. 2. In the drawing, 1 is a fixed floor fixed on pillars 3 that stand up from the foundation 2, and 4 is a movable floor plate installed so as to fit into a rectangular cavity 5 created by cutting out a part of this fixed floor. .

The pillars 3 are made of steel with a U-shaped cross section, and are appropriately erected from square timbers laid horizontally as the foundation 2, and an upper horizontal frame 6 made of the same square timbers is placed between their upper ends to form a bridge frame structure. Here, a steel material 7 is placed on the upper surface of the upper horizontal frame 6, and a floor board material 8 is stretched thereon to form the fixed floor 1.

In the figure, reference numeral 9 denotes a cross member installed halfway up the height of the support column 3, and reference numeral 10 represents an underframe supported horizontally above the cross member 9 via small supports 11.

The underframe 10 is located directly below the rectangular empty space 5,
Bearing part 1 is placed symmetrically on the upper surface of board 12 passed horizontally.
3 and 14, and two lifting frames 16 and 17 connected to both bearing portions in an intersecting manner with the shaft 15 as a fulcrum.
One end of each is pivoted. The elevating frames 16 and 17 are supporting means for always holding the floor plate 4 horizontally, and each other end has a bearing portion 1 provided on the lower surface of the floor plate 4 corresponding to the bearing portions 13 and 14.
It is pivoted to 8 and 19.

As shown in the figure, among the bearing parts to which the ends of the lifting frames 16 and 17 are attached, one bearing part 13 on the underframe 10 and the corresponding bearing part 18 on the lower surface of the floor plate fix the shaft 20. The end of the elevating frame is rotatably pivoted at one point, and the other bearing parts 14,
19 are provided with horizontally long slits 21 in parallel, and shafts 22 installed at the ends of the elevating frame are slidably fitted into these slits.

In the figure, 23 is a gas spring which is a pushing means for moving the movable floor plate 4 up and down, 24 is a support rod which is a holding means to hold the pushed up movable floor plate at a desired height, and 25 is a support rod. This is a lock member that restrains the lowering of 24.

In the gas spring 23, a cylinder 27 is fixed to a mounting plate 26 vertically installed from the underside of the underframe 10, and the upper end of a piston rod 28 extending from the cylinder is fixed to the underside of the movable floor plate. The floor plate 4 can be pushed up. The support rod 24, which restrains the rise of the floorboard at a desired position, extends vertically through a bearing body 29 provided on the base plate 12 of the underframe.
Its upper end is fixed to an operating member 30 rotatably provided on the movable floor plate 4. A locking pawl 31 in the form of a serrated gear is provided on the circumferential surface from the middle of the length to the bottom end, and this locking pawl faces the pawl 32 of the locking member 25.

As shown in FIGS. 4 and 5, this support rod 24 is connected to a spring 33 which is contracted in the hollow interior of the operating member 30.
The direction of the locking pawl 31 is forced to face the pawl 32 of the locking member 25 by pulling the locking pawl 31, and the pawl 32 of the locking member 25 presses the tip of the pawl against the circumferential surface of the support rod 24 by the bias of the spring 34. It is designed so that it will be done. Therefore, when the support rod 24 rises, the claws 32 of the locking member move to scrape over the locking claws 31 and engage with one of the locking claws 31, thereby restraining the support rod from descending. .

On the other hand, when the operating member 30 is rotated approximately 90 degrees against the spring 33, the locking claw 31
changes direction and comes off the claw 32, the restraint state is released and the moving floor board 4 is allowed to descend, and the weight of the floor board contracts the piston rod 28 of the glass spring and aligns it flush with the fixed bed 1. can descend to.

The device of the present invention is constructed as described above, and when the floor is used flatly and widely, the movable floor plate 4
It is sufficient to bring the floor into contact with the upper horizontal frame 6 and to align it with the fixed floor 1, or to raise it by pushing up the gas spring 23 when a step is provided on the floor to be used as a seat or when the floor is shaped like a staircase.

When the movable floor plate 4 starts to rise, the elevating frames 16 and 17 each swing around the shaft 20, and the shaft 1
The movable floor plate 4 is extended by sliding the shaft 22 at the other end using the slit 21 as a guide while opening vertically around the movable floor plate 5.
is held horizontally (see the two-dot chain line in Figure 3).

As the movable floor plate 4 is pushed up in this manner, one of the locking claws 31 of the support rod 24 locks with the claws 32 of the locking device 25 as it rises, so that it is restrained from descending at the elevated position. It will be fixed. When the movable floor plate is to be aligned with the fixed floor again or the height is lowered, when the operating member 30 is rotated against the spring 33, the locking pawl 31 is disengaged from the pawl 32, and the movable floor plate is free to descend. It can be lowered until it comes into contact with the upper horizontal frame 6 again. Of course, in this lowering operation, when the operating member 30 is released, the locking pawl 31 will face the pawl 32 due to the action of the spring 33, so the locking pawl 31 will be engaged at that point and the subsequent descent will be restricted. .

In the drawings, reference numeral 35 is a board installed vertically on the lower surface of the movable floor board 4, and this board serves as a support means for maintaining the horizontal position when the movable floor board 4 is raised, as shown by the two-dot chain line in FIGS. 2 and 3. This is provided to cover the exposed parts of the barrel lifting frames 16 and 17, the gas spring 23, the support rod 24 serving as a height holding means, and to prevent the cavity 5 from opening.

By the way, FIGS. 6 and 7 show an example of the operation of the floorboard when the floorboard is divided into a plurality of parts and the lifting device according to the present invention is installed below each floorboard. FIG. 6 shows a case where three floor plates A, B, and C are arranged in a step-like manner, and the small floor plate B in the middle is used as a step. FIG. 7 shows a case where floor plates A and C are aligned at the same height and floor plate B is raised to provide a seat.

[Effects of the invention] As is clear from the above-mentioned embodiments, in the present invention, the movable floor plate aligned with the fixed floor can be freely raised by the push-up means and the height can be selected, and the movable floor plate is always kept in a horizontal position. The height can be changed while holding the floor, and the height can be maintained using the height holding means, so in addition to being used widely with the floor flat, it is also possible to partially raise the floor. It can be used for a variety of purposes, such as being used as a seat or as a seating area by raising the section in a stepped manner.

The lifting device of the present invention is located below the movable floor plate and is stored under the floor plate when lowered, so it does not get in the way when the floor is made flat and has the advantage that the floor space can be utilized to the fullest.

In addition, the lifting device of the present invention has a simple structure, and the height of the movable floor plate can be easily adjusted by rotating the support rod, which is the supporting means, so it is easy to handle and has the advantage that it can be set to any height. There is.

In addition, since the lifting device of the present invention has a structure in which each movable floor plate is raised and lowered independently, it is possible to change the floor plate in a wide variety of ways by combining and installing multiple movable floor plates, and it can be used for multiple purposes. There are advantages that can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the floor plate lifting device according to the present invention;
Fig. 2 is a cross-sectional view taken along the line - - of the above figure, Fig. 3 is a cross-sectional view taken along the line - Fig. 2, Fig. 4 is an enlarged view with parts of the support rod and locking device, which are height holding means, being cut out, and Fig. 5. FIG. 6 is a plan view of the operating member, and FIGS. 6 and 7 are explanatory diagrams illustrating the state of use. 4...Movable floorboard, 5...Empty space, 16, 17...
An elevating frame as a support means for supporting in a horizontal position,
23... Gas spring serving as a pushing means, 24...
...Support rod serving as height holding means, 25...Lock device serving as restraint means.

Claims (1)

[Scope of utility model registration request] A movable floor board that can be raised and lowered, a support means for horizontally supporting the movable floor board at all times, a pushing means for raising the movable floor board, and a means for restraining and holding the pushed up movable floor board at an arbitrary height, and in this restrained holding state. and a height holding means having a restraint release means for releasing the movable floor plate, the height holding means hangs rotatably from the lower surface of the movable floor plate, and has a longitudinal section on a side surface midway along its length. It consists of a support rod provided with a plurality of locking pawls along the direction, and a lock member provided with a pawl that engages the locking pawl, and the above-mentioned pawl is always engaged with the locking pawl to prevent the support rod from descending. A floorboard lifting/lowering system characterized in that the movable floorboard is restrained to maintain its height, and when released, the support rod is rotated to remove the locking pawl from the locking member's pawl to allow the movable floorboard to descend. Device.