JPH07137995A - Air bag type space adjusting device and level difference eliminating device - Google Patents

Abstract

PURPOSE:To provide an air bag type space adjusting device and a level difference eliminating device by which a movement position and movement speed can be adjusted easily and which are simple in construction. CONSTITUTION:Two parallel plate bodies 1 and 2 are connected to each other through multiple hinged connecting pieces 4 to form spaces between the both plate bodies 1 and 2 and the hinged connecting pieces 4. Also an expandable air bag 3 is installed in the spaces, the side of the air bag 3 is held by the hinged connecting pieces 4, and the space between the both plate bodies can be changed by the expansion and contraction of the air bag 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air bag type space adjusting device and a level difference eliminating device, and more specifically, for example, raising and lowering a stage, adjusting partition intervals, or eliminating level differences such as stairs. The present invention relates to an air bag type space adjusting device and a level difference eliminating device in which a moving body such as the above and other carriers can smoothly move in the level difference portion.

[0002]

2. Description of the Related Art Conventionally, there have been various types of devices for adjusting a gap and eliminating a step associated with this type of device.
The following mechanism is known. That is, the central portions of the upper and lower plates or the left and right plates are connected by a pantograph-shaped leg member (table lifter), and the distance between the plate members can be adjusted by folding and pushing the leg members apart. A structure using a link mechanism, a structure in which a hydraulic cylinder is provided between the upper and lower plates or the left and right plates, and the distance between the plates can be adjusted by expanding and contracting the rod of the hydraulic cylinder. There is known a mechanism such as a structure in which a ball screw is connected and the ball screw is operated to adjust the distance between the plate bodies.

These distance adjusting and level difference eliminating devices are incorporated in various devices, or are effectively used as a single means for lifting and moving various loads. For example, a mechanism that uses a table lifter is often used in the case of a stage lifting device in a theater, and a mechanism that uses a hydraulic cylinder is often used in a luggage transport device at a construction site or a factory.

[0004]

However, in the case of the conventional gap adjusting / step eliminating device as described above, there are the following problems. That is, in the configuration using the table lifter, it is difficult to finely adjust, control, and maintain the movement stop positions of the stage and the pallet, and a stopper is required. In a configuration using a hydraulic cylinder, a check valve,
A hydraulic pressure supply mechanism is required, the configuration is complicated, and its control and maintenance are difficult. In the configuration using the ball screw, the power transmission mechanism for driving the ball screw becomes complicated, and the lifting / moving bead becomes slow. There are issues such as.

The present invention has been made in response to the above-mentioned problems, and its object is to make it easy to adjust the moving position and moving speed and to have a simple structure. An object is to provide a bag-type space adjusting device and a level difference eliminating device.

[0006]

An air bag type space adjusting device of the present invention as a means for achieving the above object connects two parallel plate bodies with a plurality of hinge-like connecting pieces. And forming a space between the both plate bodies and the hinge-like connecting piece, and providing an inflatable and retractable airbag in the space, and holding the side portion of the airbag by the hinge-like connecting piece, The gap between the plate bodies can be changed by expanding and contracting the airbag.

Further, in the airbag type level difference eliminating device of the present invention, one plate body is used as a stage or pallet, the other plate body is used as a base, and both plate bodies are connected by a hinge-like connecting piece. A space portion is formed between the plate body and the hinge-like connecting piece, and an inflatable and retractable airbag is provided in the space portion, and the side portion of the airbag is held by the hinge-like connecting piece. The stage or pallet can be moved up and down by expansion and contraction.

Further, another airbag type step eliminating device of the present invention is such that, in the above invention, the hinge-like connecting pieces are arranged in three directions between both plate bodies.

[0009]

The air bag type interval adjusting device and the step eliminating device of the present invention are installed at a predetermined position, and then the amount of gas in the air bag is adjusted and the air bag is inflated and deflated, whereby both plate members are You can adjust the spacing and eliminate steps. That is, in the case of forming it as an elevating device, when a moving object or a conveyed object is mounted on a plate forming a stage or a pallet and then gas is filled into the airbag, the hinge-shaped connecting piece on the side of the airbag causes The stage and the pallet can be inflated while preventing the buckling, and the stage and the pallet can be raised as the airbag is inflated, and the stage and the pallet can be lowered by removing the gas in the airbag. Further, when it is formed as a position adjusting device for a plate such as a partition, it works so that the plate can be moved to an arbitrary position depending on the amount of gas in the airbag.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1 to FIG.
1 shows a first embodiment of the present invention, FIG. 1 is a plan view, FIG. 2 is a sectional view of FIG. 1A-A in a state where an airbag is inflated, and FIG. 3 is a sectional view of FIG. 1B-B in which an airbag is inflated. 4 is a plan view of the airbag, and FIG. 5 is a diagram of the airbag in a contracted state.
6 is a side view of another embodiment of the hinge-like connecting piece, and FIGS. 7 to 8 are cross-sectional views of another embodiment of the present invention.

The present embodiment is an airbag type step eliminating device, and in brief, an airbag 3 is provided between a pallet plate 1 and a base plate 2, and a hinge-like connecting piece 4 is provided on a side portion of the airbag 3. , 4, 4 are provided, and by inflation and deflation of the airbag 3,
This is a level difference eliminating device that raises and lowers the pallet plate 1.

The pallet plate 1 is a pallet for placing a carrier and a movable body, and is usually formed of a wooden or metal flat plate. In addition, the base plate 2 is a base plate and has a form that can be stably placed on the installation location. An airbag 3 is attached between the pallet plate 1 and the base plate 2 and is connected by a connecting tool 5 such as a chain or a wire. Any level adjustment (interval adjustment) can be performed by adjusting the length of the connecting tool 5 or using one having an appropriate length.

The airbag 3 is formed of a closed cylindrical body made of synthetic resin or the like, the upper end of which is fixed to the bottom surface of the pallet plate 1 and the lower end of which is fixed to the upper surface of the pace plate 2.
The closed cylindrical body is a bellows having an upper and lower two-stage structure formed by welding a plurality of laminated gas barrier sheets (four layers are used in this embodiment) and sewing. In the cylindrical body, the lower cylinder is provided with a gas filling / exhausting pipe 6, and the amount of gas in the cylinder through the gas filling / exhausting pipe 6 can be adjusted. Further, the gas filling / exhausting pipe 6 is connected to a gas tank 9 via a solenoid valve 7 and a pump (or blower) 8, and by operating the pump 8, the gas in the gas tank 9 can be filled in the airbag 3. ing. Further, hinge-shaped connecting pieces 4, 4, 4 are provided on the side portion of the airbag 3, so that the airbag 3 can be restrained from moving in the lateral direction and can be moved while maintaining a horizontal state in the vertical direction. I have to. If a blower is used instead of the pump 8, the solenoid valve 7 may be used as necessary.
Can be omitted, and in the case of a blower, the drive state can be kept constant. Further, instead of the gas tank 9, air may be sucked into and exhausted from the blower or the pump 8.

The hinge-shaped connecting pieces 4, 4 and 4 are used for the airbag 3.
The air bag 3 is sandwiched and held, and its upper end 4a is fixed to the bottom surface of the pallet plate 1 and its lower end 4b is fixed to the upper surface of the base plate 2. Due to the contraction, the bending angle changes like a hinge, preventing or reducing the lateral movement of the airbag 3, and always
The pallet plate 1 can be moved up and down horizontally with respect to the base plate 2. Here, the hinge-shaped connecting pieces 4, 4, 4 are
They are arranged in a "dogleg" shape that projects outward. The hinge-shaped connecting pieces 4, 4, 4 may have a plurality of bent portions (bent portions, as shown in FIG. 8).

In the airbag type level difference eliminating device of this embodiment, the pallet plate 1 can be moved up and down by installing the base plate 2 at a position having a level difference and adjusting the gas amount of the airbag 3. That is, when the pump 8 is operated and the gas in the gas tank 9 is filled into the airbag 3 via the solenoid valve after the transported object is placed on the pallet plate 1, the airbag 3 starts to expand and the airbag 3 The hinge-shaped connecting pieces 4, 4 and 4 on the side portion of the bag 3 can raise the bag while maintaining the horizontal state, and can raise the conveyed object to a position corresponding to the filling amount of the gas. Further, the lowering can be performed by discharging the gas in the airbag 3.

Here, the pallet plate 1 and the base plate 2 are connected by hinge-like connecting pieces 4, 4, 4 and the airbag 3 is
Since the airbag 3 is provided in the space formed by the pallet plate, the base plate 2, and the hinge-shaped connecting pieces 4, 4, 4, and the airbag 3 is sandwiched by the hinge-shaped connecting pieces 4, 4, 4, the hinge-shaped connecting pieces are connected. Piece 4,
By means of 4 and 4, it is possible to prevent the sway and tilt that occur when the airbag 3 is inflated and deflated, and to raise and lower the pallet plate 1 while always maintaining a horizontal state with respect to the base plate 2. By the way, the rising height of the pallet plate 1 is determined by the hinge-shaped connecting pieces 4,
Up to the height at which 4, 4 stand up, the height when descending is the thickness when the airbag 3 is contracted or the thickness of the hinge-shaped connecting pieces 4, 4, 4 in the folded state. Therefore, the hinge-shaped connecting piece 4,
It is possible to easily eliminate the level difference at the level difference portion where there is a level difference between the thickness of the folded state of Nos. 4 and 4 and the standing height. For example, it is possible to effectively use stairs or steps at a station, at home, etc. even when using a wheelchair to ascend or descend.

By the way, although the present embodiment has been described as the step eliminating device, it may be embodied as an interval adjusting device for partition walls such as partitions. In this case, the structure of the above-described embodiment can be used by arranging it vertically.

It should be noted that the present invention is not limited to the above-described embodiments, but includes configurations that can be modified within the scope of the present invention. Incidentally, by stacking the configuration of the present embodiment in a plurality of stages or by forming the airbag itself in a multi-stage structure, it is possible to eliminate steps and adjust the gap having a larger movement gap. Also,
In the above-described embodiment, the hinge-shaped connecting pieces have been described as being provided in three directions on the side of the airbag.However, depending on the planar shape of the airbag, it is also possible to provide more hinge-like connecting pieces. Of course, the structure may be provided in two directions.

As the hinge-shaped connecting piece, one having an arbitrary shape (for example, a plane "shape") may be used. Also,
In the above-described embodiments, the airbag has been described as having a flat octagonal shape, but other shapes, for example, various shapes such as a triangular shape, a square shape, and a pentagonal shape can be used.

Further, as shown in FIGS. 7 and 8, a plurality of airbags (two airbags in the drawing) and a hinge-like connecting piece are laterally arranged between two parallel plates. It may be provided. Further, it goes without saying that the gas filling port can be provided at any position.

[0021]

As is apparent from the above description, according to the airbag type interval adjusting device and the step eliminating device of the present invention,
Since the amount of gas in the airbag is adjusted to expand and contract the airbag, the moving position and the moving speed can be easily adjusted without the need for a complicated stopper mechanism and the like, and Since no hydraulic pressure is used, it is possible to cleanly and safely adjust the intervals and eliminate steps.

Further, according to the air bag type space adjusting device and the step eliminating device of the present invention, since the air bag is held by the hinge-like connecting piece to be inflated and contracted, the pallet, the stage, or the partition fixed to the air bag. There is an effect that the moving plate body such as a wall can be moved in parallel with the plate body on the other end side while maintaining safety.

[Brief description of drawings]

FIG. 1 is a plan view of an airbag type step eliminating device showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of FIG. 1A-A in a state where the airbag is inflated.

FIG. 3 is a cross-sectional view of FIG. 1B-B with the airbag inflated.

FIG. 4 is a plan view of the airbag.

FIG. 5 is a sectional view of FIG. 1A-A in a state in which the airbag is contracted.

FIG. 6 is a schematic side view of another embodiment of the hinge-like connecting piece.

FIG. 7 is a cross-sectional view showing another embodiment of the present invention in which two airbags and hinge-shaped connecting pieces are arranged in parallel in the lateral direction.

FIG. 8 is a cross-sectional view of another embodiment of the present invention, in which two airbags are arranged side by side in a lateral direction.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pallet plate, 2 ... Base plate, 3 ... Airbag, 4 ... Hinge-shaped connecting piece, 5 ... Chain, 6
... Gas filling, discharge pipe, 7 ... Solenoid valve, 8 ...
・ Pump or blower (motor), 9 ... Gas tank (low pressure gas such as oxygen and nitrogen)

Claims (3)

[Claims] 1. Two parallel plate bodies are connected by a plurality of hinge-like connecting pieces to form a space portion between the both plate bodies and the hinge-like connecting piece, and the space portion is expanded. A retractable airbag is provided, and the hinge-like connecting piece holds the side portion of the airbag,
An air bag type space adjusting device, characterized in that the space between the two plate bodies can be changed by expanding and contracting the air bag. 2. One plate body is used as a stage or pallet, the other plate body is used as a base, and both plate bodies are connected by a hinge-like connecting piece, and between the both plate bodies and the hinge-like connecting piece. A space portion is formed, and an inflatable and deflatable airbag is provided in the space portion, the side portion of the airbag is held by the hinge-like connecting piece, and the stage or pallet can be moved up and down by the expansion and contraction of the airbag. An air bag type step-eliminating machine characterized by this. 3. The airbag type step eliminating device according to claim 2, wherein the hinge-like connecting pieces are arranged in three directions between both plate bodies.