JPH0812221A - Air bag type step eliminating device - Google Patents

Abstract

PURPOSE:To hinder drop of a wheel chair etc., placed on a pallet plate, form a slope, and facilitate elimination of step by elevating and sinking the pallet plate relative to a base board in association with inflation and shrinkage of an air bag, and also allowing a slope forming piece to rise and fall. CONSTITUTION:To eliminate a step, a base board 2 is installed in the place with the step, and the air amount in an air bag 3 is adjusted, and then a pallet plate 1 is elevated or sunk. When the air amount in the air bag 3 is decreased and the air bag 3 is shrunk, a hinge-like coupling piece 4 to retain the air bag 3 bends inward, and the tip of a slope forming piece 6 provided extendedly at the top 5a of an upper coupling piece 5 forming the hinge-like coupling piece 4 is landed so as to form a slope 13. When the air bag 3 is inflated, conversely, a wheel chair etc., placed on the pallet plate 1 can be elevated to the position in compliance with the air filling amount. At this time, the slope forming piece 6 rises or inclines to form a hindering piece 14 which hinders the wheel chair etc., from dropping.

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 step eliminating device, and more specifically, for example, raising and lowering a stage,
The present invention relates to an air bag type step eliminating device capable of eliminating steps such as stairs and entrances so that a moving body such as a wheelchair and other carriers can smoothly move the steps.

[0002]

2. Description of the Related Art Conventionally, there are various mechanisms as a step eliminating device related to this type of device, and the following mechanism is known. That is, a link mechanism in which the mounting body and the base body are connected by a pantograph-shaped opening leg member (table lifter), and the gap between the two can be adjusted by folding and pushing the leg member apart. , A structure in which a hydraulic cylinder is provided between the mounting body and the base body, and the distance between the mounting body and the base body 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 two.

These level difference eliminating devices are incorporated in various devices or individually lifted / lowered for various loads.
It is effectively used as a means of transportation. 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.

However, in the case of the conventional level difference eliminating device described above, in the configuration using the table lifter, it is difficult to finely adjust, control, and maintain the movement stop position of the mounting body with respect to the stage and pallet names, 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. And other issues.

Therefore, the present inventor firstly described that "a mounting body such as a stage or a pallet and a base body are connected by a hinge-like connecting piece, and the mounting body, the base body and the hinge-like connecting piece are connected. A space portion is formed between the air bag and the space portion, an inflatable and deflatable airbag is provided in the space portion, and the hinge-like connecting piece holds the side portion of the airbag, and the airbag is inflated and deflated to thereby place the body. An air bag type step eliminating device having a structure capable of moving up and down is proposed (refer to Japanese Patent Application No. 5-312501).

[0006]

However, this device has the following problems. That is, even if the placement body is lowered by contracting the airbag, a step remains between the placement body and the ground floor surface. It is difficult to transfer without changing the condition. In addition, when getting off the step, the person in a wheelchair with the airbag inflated and the placement body lowered is
Although the step moves when the airbag is contracted after being placed on the placing body, there is a risk of accidentally dropping from the placing body when the airbag is placed on the placing body. And other issues remain.

[0007] Therefore, the present inventor, based on this point of view and as a result of various researches, provided a slope on the device and arranged the slope according to the operation of the hinge-like connecting piece. Therefore, it was clarified that the step can be eliminated.

The present invention has been made in view of the above-mentioned problems, and its object is to easily adjust the moving position and moving speed of the air and to construct the air with a simple structure. It is to provide a bag type step eliminating device. Another object of the present invention is to provide an airbag type step eliminating device which can move the step safely and smoothly.

[0009]

The airbag type step eliminating device of the present invention as a means for achieving the above-mentioned object is a hinge shape in which a mounting body and a base body can be bent inward or outward. Directly or indirectly connecting with a connecting piece to form a space between the mounting body, the base body and the hinge-like connecting piece, and providing an inflatable and deflatable airbag in the space, The slope forming piece is directly or indirectly provided on the upper connecting piece of the connecting piece, or on the mounting body described above, and the side portion of the airbag is held by the hinge-shaped connecting piece. When the body is lifted and the airbag is contracted, the slope forming piece forms a slope.

According to a second aspect of the present invention, in the airbag type step eliminating device of the present invention, the hinge-like connecting pieces are arranged in three directions between the mounting body and the base body, and the slope forming pieces enter. The structure is provided on the upper connecting piece of the hinge-like connecting piece located on the road side. Further, in the airbag type step eliminating device according to claim 3 of the present invention, in each of the above inventions, the hinge-like connecting piece is an inwardly bendable connecting piece, and a slope forming piece is provided on an upper connecting piece of the connecting piece. Has been extended.
Further, an airbag type step eliminating device according to a fourth aspect of the present invention is configured such that a plurality of airbags are arranged in the horizontal direction or the vertical direction in each of the above inventions.

Further, according to a fifth aspect of the present invention, in the airbag type step eliminating device, the mounting body and the base body are directly or indirectly connected to each other by a hinge-like connecting piece which can be bent inward or outward. A space portion is formed between the mounting body, the base body, and the hinge-like connecting piece, and a plurality of elevating bodies provided with inflatable and retractable airbags in the space portion are vertically arranged in a plurality of stages. The upper connecting piece of the hinge-like connecting piece located at the top of, or the above-mentioned mounting body is provided with a slope forming piece directly or indirectly, and the side part of the airbag is held by the hinge-like connecting piece, The mounting body is moved up and down by expansion and contraction of the airbag, and when the airbag is contracted, the slope forming piece forms a slope.

[0012]

The airbag type level difference eliminating device of the present invention eliminates the level difference between both plate members by adjusting the amount of air in the airbag and expanding and contracting the airbag after it is installed at a predetermined position. it can. That is, when a moving body such as a wheelchair or other carrier is mounted on a mounting body such as a stage or a pallet and then air is filled in the airbag, the buckling is prevented by a hinge-like connecting piece on the side of the airbag. While being inflated, the mounting body rises as the airbag expands, and when the air in the airbag is evacuated, the mounting body descends and is provided on the upper connecting piece of the hinge-like connecting piece. The slope forming pieces form a slope. Therefore, a moving body such as a wheelchair or other carrier can be placed on the above-mentioned mounting body and moved on the stepped portion.

If the hinge-like connecting piece is a connecting piece that bends inward and the slope forming piece extends on the upper connecting piece of the connecting piece, when the airbag is inflated, the slope is formed. The forming piece forms a slope, and when the airbag is inflated, the slope forming piece acts to form a fall prevention piece. In addition, if multiple airbags are arranged horizontally, the occurrence of instability factors such as shaking of the device can be eliminated, and if multiple airbags are arranged vertically, or if the elevators are stacked in multiple stages. In the case of such a configuration, it acts so that the stroke in the vertical direction can be increased.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1 to FIG.
1 shows an embodiment of the present invention, FIG. 1 is a side view of an airbag inflated state, FIG. 2 is a side view of the airbag inflated state, FIG. 3 is a plan view, FIG. 4 is a rear view, and FIG. A plan view and a side view of the airbag, FIG. 6 is a side view of another embodiment of the hinge-like connecting piece, FIGS. 7 to 9 are cross-sectional views of another embodiment of the present invention, and FIG. 10 is another embodiment of the present invention. 11 is a plan view of another embodiment of the present invention, and FIGS. 11 to 12 are sectional views of other embodiments of the present invention.

The present embodiment is an airbag type step eliminating device, and, roughly speaking, 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. And the slope forming piece 6 is provided on the upper end 5a of the upper connecting piece 5 of the hinge-like connecting piece 4 on the approach path side of the hinge-like connecting piece 4, and the pallet plate 1 is moved up and down by the expansion and contraction of the airbag 3. This is a step difference eliminating device which forms a slope when the airbag 3 is contracted while the airbag 3 is contracted.

The pallet plate 1 is a pallet for mounting a carrier or a moving body, that is, a mount, and is usually formed of a flat plate made of wood or metal. The mounting body may be detachably arranged on the upper side of the frame body.
Further, the base plate 2 is a base body composed of a base plate, and has a form that can be stably mounted on the installation location. The base body may be formed of a floor surface or may be formed of a base frame body instead of the base plate. An airbag 3 is attached between the pallet plate 1 and the base plate 2 and is connected by a connecting tool 7 such as a chain or a wire. Any level adjustment (interval adjustment) can be performed by adjusting the length of the connecting tool 7 or using one having an appropriate length.

When the airbag 3 is formed of a hermetically-sealed bellows body made of synthetic resin or the like, and the upper end has a bottom surface of the pallet plate 1 or a frame body on which the pallet plate 1 can be removably mounted, , Is arranged in the space formed by the frame. It is fixed if necessary. The bellows body has an upper and lower two-stage structure formed by welding a plurality of laminated gas barrier sheets and sewing them, and the lower cylinder is provided with an air filling / exhaust pipe 8. The amount of air in the cylinder can be adjusted through the air filling / exhausting pipe 8. The air filling / exhausting pipe 8 is connected to a solenoid valve 9 and a pump (or a blower) 10 to operate the pump 10 to fill the airbag 3 with air. A hinge-shaped connecting piece 4 that bends inward is provided on the side of the airbag 3, and restrains the lateral movement of the airbag 3 and allows the airbag 3 to move while maintaining a horizontal state in the vertical direction. I am trying. Here, when a blower is used instead of the pump 10, the solenoid valve 9 can be omitted if necessary, and the drive state can be maintained at all times. Also, air is sucked into the blower or pump 10.
It may be configured to evacuate. In this embodiment, as the airbag 3, a two-stage airbag having a four-layer structure is used as shown in FIG. That is,
Of the four layers (four sheets) of the sheets 3a, 3b, 3c, 3d, the periphery of the sheets 3a, 3b and the sheets 3c, 3d are heat-welded to each other and then sewn with a sewing machine, and the center of the sheets 3b and 3c. Opening 3g of the part and reinforcing sheet 3
In order to reinforce with e and heat-weld the periphery of the opening 3g, and then sew the sewing machine, and also to partially provide the air filling / exhausting port 8 with the base plate 2, the pallet plate 1 and the like to hold the periphery. The retaining ring 3f is used.

The hinge-like connecting pieces 4 are arranged in three sides of the airbag 3 so as to sandwich and hold the airbag 3. The upper end 5a of the upper connecting piece 5 is fixed to the bottom surface of the pallet plate 1, The lower end 12a of the side connecting piece 12 is fixed to the upper surface of the base plate 2, and the bending angle changes like a hinge due to the expansion and contraction of the airbag 3 to prevent or reduce the lateral movement of the airbag 3. The pallet plate 1 can always be raised and lowered horizontally with respect to the base plate 2. Here, the hinge-shaped connecting piece 4 is arranged in a "dogleg" shape protruding inward. The hinge-like connecting piece 4 is not limited to the plate-like one, and it is needless to say that the hinge-like connecting piece 4 may be formed into a frame shape with a frame such as a pipe and can be bent or bent.

Of the hinge-like connecting pieces 4, the upper end 5 of the upper connecting piece 5 of the connecting piece 4 located in the entrance of the carrier.
A slope forming piece 6 is extended to a. That is, the slope forming piece 6 and the upper connecting piece 5 are formed of a single plate body, and the slope forming piece 6 is bent in a "V" shape so that the airbag 3 is contracted. When 1 descends, its tip lands and forms a slope 13, and when the airbag 3 inflates and the pallet plate 1 rises, its tip is erected or inclined, and A blocking piece 14 for blocking falling is configured. The hinge-shaped connecting piece 4 may have a plurality of bent portions (bent portions) as shown in FIG. By the way, in the present embodiment, the pallet plate 1 and the base plate 2 are directly connected by the hinge-shaped connecting piece 4, but they may be indirectly connected via a frame body on which the pallet plate 1 is placed. . The base plate 2 is not limited to the plate body,
You may form with a frame.

In the airbag type step eliminating device of this embodiment, the pallet plate 1 can be moved up and down by installing the base plate 2 at a place having a step and adjusting the air amount of the airbag 3. That is, when the amount of air in the airbag 3 is reduced and the airbag 3 is deflated, the hinge-like connecting piece 4 that holds the airbag 3 bends inward and forms the hinge-like connecting piece 4. The tip of the slope forming piece 6 extending to the upper end 5a of the upper connecting piece 5 lands and forms the slope 13. Then, after the carrier is moved and placed on the pallet plate 1 via the slope forming piece 6, the pump 10 is operated to fill air into the airbag 3 via the solenoid valve. Starts to inflate, and can be raised while the horizontal state is maintained by the hinge-shaped connecting piece 4 on the side portion of the airbag 3, and the carrier can be raised to a position corresponding to the amount of air filled. . Then, when the pallet plate 1 is raised, the hinge-shaped connecting piece 4 is in an upright state, and the slope forming piece 6 extending to the upper end 5a of the upper connecting piece 5 is in an upright or inclined state. A blocking piece 14 is formed to prevent the carrier from accidentally falling.

The pallet plate 1 and the base plate 2 are connected by a hinge-like connecting piece 4, and the airbag 3 is provided in a space formed by the pallet plate 1, the base plate 2 and the hinge-like connecting piece 4. Since the airbag 3 is sandwiched by the hinge-like connecting pieces 4, the hinge-like connecting pieces 4 prevent the swing and tilt that occur when the airbag 3 is inflated and contracted, and always prevent the airbag 3 from moving against the base plate 2. It is possible to raise and lower the pallet plate 1 while maintaining the horizontal state. By the way, the rising height of the pallet plate 1 is up to the height at which the hinge-like connecting piece 4 stands up, and the height when descending is the thickness when the airbag 3 is contracted or the thickness of the hinge-like connecting piece 4 in the folded state. Become. Therefore, it is possible to easily eliminate the step difference at the step portion where there is a step difference between the thickness of the hinge-shaped connecting piece 4 in the folded state and the standing height, and the thickness of the folded state can be eliminated by the slope 13. 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.

The present invention is not limited to the above-described embodiments, but includes configurations that can be modified and implemented within the scope of the present invention. Incidentally, by stacking the configuration of this embodiment in a plurality of stages or by forming the airbag itself in a multi-stage structure, it is possible to eliminate the step having a larger movement interval. Further, in the above-described embodiment, the hinge-shaped connecting pieces are described as being provided in the three lateral directions of the airbag, but a configuration in which more hinge-like connecting pieces are provided depending on the planar shape of the airbag. Alternatively, the structure may be provided in two directions.

Further, as the hinge-like connecting piece, an arbitrary shape (for example, a plane "shape") may be used.
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, the slope forming piece is not formed by a single plate extending on the upper connecting piece of the hinge-like connecting piece, but as shown in FIG. 7, the slope forming piece 6 and the upper connecting piece 5 are separated from each other. A plate body may be used, and the slope forming piece 6 may be swingably attached to the upper end 5a of the upper connecting piece 5 via the rod body 15.
In the case of this configuration, when the airbag is inflated, the slope forming piece 6 is in a hung state.

Further, as shown in FIGS. 8, 9 and 10,
A plurality of airbags 3 and a hinge-like connecting piece 4 may be provided in a lateral direction (horizontal direction) between two parallel plate bodies 1 and 2. That is, in the case of FIG. 8, two airbags 3 are arranged side by side in the left-right direction, and a hinge-like connecting piece 4 is provided around each airbag 3. Further, in the case of FIG. 9, two airbags 3 are arranged in the left-right direction,
The hinge-shaped connecting piece 4 is provided on the outer peripheral side. Figure 10
In this case, a plurality of airbags 3 are arranged in the left-right direction and the front-back direction. Further, in the case of these configurations, the stability of the device is further improved, and the occurrence of shaking or the like can be prevented.

Further, as shown in FIGS. 11 and 12, the airbag or device may be arranged in a plurality of stages in the vertical direction. That is, FIG. 11 shows an embodiment in which the airbag 3 and the hinge-shaped connecting piece 4 are vertically stacked. Further, FIG. 12 shows that the airbag 3 is directly or indirectly connected to the mounting body and the base body by a hinge-like connecting piece 4 which is bendable inward or outward, and the mounting body 1, the base body 2 and the hinge are connected. A space portion is formed between the vertical connecting piece 4 and the elevating body 20 provided with an inflatable and deflatable air bag in the space portion and is vertically arranged in a plurality of stages (two stages in the drawing). And, in the case of this configuration, there is an advantage that a large stroke in the vertical direction can be taken. Further, the airbag 3 and the hinge-shaped connecting piece 4 may be arranged in a plurality of stages in the vertical direction. Then, in FIGS. 11 and 12, the slope forming piece is attached to the hinge-like connecting piece 4 or the mounting body 1 located at the top.

[0026]

As is apparent from the above description, according to the airbag type step eliminating device of the first aspect of the present invention, the amount of air in the airbag is adjusted to expand and contract the airbag. Since it does not require a complicated stopper mechanism etc., its moving position and moving speed can be easily adjusted, and since hydraulic pressure etc. are not used, it is possible to adjust the interval cleanly and safely and eliminate steps. Moreover, since the slope forming piece provided on the upper connecting piece of the hinge-like connecting piece forms a slope, a moving body such as a wheelchair or other carrier can easily move on the step portion.

Further, according to the airbag type step eliminating device of the second aspect of the present invention, since the hinge-like connecting pieces are arranged in three directions, the mounting body held by the airbag can be made horizontal. Since it can be held and the slope forming piece is provided on the hinge-like connecting piece located on the approach road side, there is an effect that a wheelchair or the like can move between the steps safely and smoothly.

According to the airbag type step eliminating device of the third aspect of the present invention, the hinge-like connecting piece is a connecting piece bent inward, and the slope forming piece is provided on the upper connecting piece of the connecting piece. Since the slope forming piece forms a slope when the airbag is inflated, and the slope forming piece is extended to the upper connecting piece, the slope forming piece is formed when the airbag is inflated. Has the effect of forming a fall prevention piece.

Further, according to the airbag type step eliminating device of the fourth aspect of the present invention, since a plurality of airbags are arranged in the horizontal direction, the steps of the frontage, the stage, etc. are combined by combining the configurations of the entire apparatus. There is an effect that the mounting portion can be made to have an arbitrary size according to the size of the part. In addition, when a plurality of airbags are arranged in the vertical direction, it is possible to make an arbitrary stroke according to the level difference of the stage or the like, and further, it is possible to eliminate the occurrence of unstable factors such as shaking of the device. Have.

Further, according to the airbag type step eliminating device of the fifth aspect of the present invention, since a plurality of lifting bodies having the airbag and the hinge-like connecting piece are arranged in the vertical direction,
This has the effect of maintaining a stable state and increasing the vertical stroke.

Therefore, according to the present invention, an air bag type step eliminating device is provided which allows a moving body such as a wheelchair and other carriers to easily adjust the moving position and the moving speed and to move the step safely and smoothly. Can be provided.

[Brief description of drawings]

FIG. 1 is a side view showing a state where an airbag is inflated.

FIG. 2 is a side view of the airbag in a contracted state.

FIG. 3 is a plan view.

FIG. 4 is a rear view.

FIG. 5 is a plan view and a side view of the airbag.

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

FIG. 7 is a schematic cross-sectional view of a configuration in which a slope forming piece is swingably provided.

FIG. 8 is a cross-sectional view showing another embodiment of the present invention in which two airbags and hinge-like connecting pieces are horizontally arranged side by side.

FIG. 9 is a cross-sectional view showing another embodiment of the present invention in which two airbags are arranged in parallel in the horizontal direction.

FIG. 10 is a plan view of another embodiment of the present invention, in which four airbags are arranged in parallel in the horizontal direction.

FIG. 11 is a cross-sectional view of another embodiment of the present invention, in which two airbags are arranged in parallel in the vertical direction.

FIG. 12 is a cross-sectional view of another embodiment of the present invention, in which two elevating bodies having an airbag and a hinge-like connecting piece are arranged in parallel in the vertical direction.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pallet plate (mounting body), 2 ... Base plate (base body), 3 ... Airbag, 4 ... Hinge-shaped connecting piece, 5 ... Upper side connecting piece, 5a ...・ Upper ends of upper connecting pieces, 6 ... Slope forming pieces, 7 ... Chains, 8 ...
..Air filling, discharge pipes, 9 ... solenoid valves, 10 ...
-Pump or blower (motor), 12 ... lower connecting piece, 12a ... lower end of lower connecting piece, 13 ...
Slope, 14 ... Blocking piece, 20 ... Lifting body

Claims (5)

[Claims] 1. A mounting body and a base body are directly or indirectly connected by an inwardly or outwardly bendable hinge-like connecting piece, and between the placing body, the base body and the hinge-like connecting piece. A space is formed and an inflatable and retractable airbag is provided in the space.
An upper connecting piece of the hinge-like connecting piece or the above-mentioned mounting body is directly or indirectly provided with a slope forming piece, and the hinge-like connecting piece holds the side portion of the airbag, and the airbag is expanded or contracted. An airbag type step eliminating device, wherein the slope forming piece forms a slope when the mounting body is raised and lowered and the airbag is contracted. 2. The hinge-like connecting piece is arranged in three directions between the placing body and the base body, and the slope forming piece is provided on the upper connecting piece of the hinge-like connecting piece located on the approach road side. 1. The airbag type step eliminating device described in 1. 3. The airbag according to claim 1, wherein the hinge-like connecting piece is an inwardly bendable connecting piece, and a slope forming piece is extended from an upper connecting piece of the connecting piece. Type step eliminating device. 4. The airbag type step eliminating device according to claim 1, wherein a plurality of airbags are arranged in a horizontal direction or a vertical direction. 5. The mounting body and the base body are directly or indirectly connected to each other by an inwardly or outwardly bendable hinge-like connecting piece, and between the placing body, the base body and the hinge-like connecting piece. Upper and lower connecting pieces of a hinge-like connecting piece located at the top of the elevating body, in which a plurality of elevating and lowering bodies that form a space and in which an inflatable and retractable airbag are provided are vertically arranged. Or, the mounting body is directly or indirectly provided with a slope forming piece, the side portion of the airbag is held by the hinge-like connecting piece, and the mounting body is moved up and down by expansion and contraction of the airbag, and An airbag type step eliminating device, wherein the slope forming piece forms a slope when the airbag is contracted.