JP3035006U - Lifter for people with disabilities - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To reduce a height difference between a lifting board and a floor surface when a physically handicapped person gets on and off while having a movable caster, and a slope board having a small inclination angle and a short physical disability. Providing lifters for people. SOLUTION: In a lifter for a physically handicapped person or the like, an elevating board 2 provided between both side frame bodies 1 can be raised and lowered, and can be moved by a lower caster 5 in each caster 5.
To the nuts 7 on the support plates 6 provided on the front and rear portions of the lower side of the frame 1 on the lower side, and screw the bolts 8 on the upper portions of the casters 5 together, and the bolts 8 are rotated by the operating rod to raise the casters 5. It is possible to descend. Further, a chain 4 is used as a power transmission means, and the chain 4 is hooked at its respective end portions to the inner upper portion of the other side frame body 1 via the inner lower portions near the front and rear portions of the elevating board 2, and Of each of the two chains 4, one of the chains 4 is always used as the other chain 4 for auxiliary power transmission.
Wrap it around the chain wheel 10 more loosely.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is intended for use by an elderly person who has a weak leg or waist or a person with a disability in the body, particularly a leg (hereinafter referred to as a physically handicapped person), when climbing or descending to a stepped place while walking or riding in a wheelchair. It is related to the improvement of lifters for people with disabilities, such as people who can climb and descend to climb over steps.

[0002]

[Prior art]

 When climbing or descending from a floor or the ground (hereinafter referred to as the floor) to a place with a step, a healthy person can easily climb up and down by using stairs, but it is not easy for a physically handicapped person. Absent. For example, even in public halls, which are also public facilities, citizen (inhabitant of a ward) halls, gymnasiums, auditoriums, theaters, etc., many structures have a structure that only considers healthy people, and only stairs are provided on the platform. Nothing more than. When a person with a physical disability needed to go up to the platform, many people had to assist themselves to climb the stairs.

In order to solve the problem, lifters for persons with physical disabilities have been developed. For example, as shown in FIG. 3 of the registered utility model gazette of Utility Model Registration No. 3021763, a person with a physical disability, etc. boarded on an elevating board (including an upper surface board and a board supporting member below it), and The board can be moved up and down by electric / hydraulic or pneumatic driving means and power transmission means such as an X-shaped pantograph type / feed screw type or piston type.

[0004] By the way, this type of lifter lifts and lowers a person and a wheelchair, and since it is quite large and bulky, it is always installed near the stairs on the platform even when it is not used. Things get in the way. Also, since it has a built-in lifting mechanism and is quite heavy, it requires a considerable amount of force to move it to another location and store it. Therefore, it is desirable to provide casters at the lower four corners so that they are mobile.

[0005]

[Problems to be solved by the device]

 However, if casters are installed at the bottom of this lifter to make it movable, even if there is some unevenness on the floor surface, etc., in order to move smoothly, the floor surface and the lower end surface of the lifter It is necessary to keep the space (minimum ground clearance) between and about 30 mm normally.

Therefore, even if the lower end surface of the lifting board is lowered to the same position as the lower end surface of the lifter when the lifting board is lowered to the lowest position, a person with a physical disability should use the lifter on the lifting board. When getting in, it is necessary to get over the step difference of 30 mm plus the thickness of the elevating board. For example, if the lifting board has a thickness of 40 mm, a physically handicapped person or the like cannot get on the lifting board unless he / she steps over a step of about 70 mm.

[0007] This step difference of about 70 mm increases the inclination angle of the slope plate from the elevating board to the floor surface, etc., and it is a considerable burden for a physically handicapped person to walk on or climb on the elevating board with a wheelchair. Become. In addition, if the inclination angle is made smaller, the slope plate becomes longer, which may cause problems such as getting in the way when it is not used and catching a foot or wheelchair.

The present invention addresses the problem of the conventional lifters for physically handicapped persons and the like. In other words, the object of the present invention is a mobile type with casters that can be stored in a different place except when in use and can be installed in a required place when in use, but the height above the elevating board can be reduced. The purpose of the present invention is to provide a lifter that allows the physically handicapped person to easily get in and out of the vehicle, because the slope plate is short and the inclination angle is gentle.

[0009]

[Means for Solving the Problems]

 A The first lifter for the physically handicapped person or the like according to the present invention is capable of moving up and down by a drive means 3 and a power transmission means 4 of an elevating board 2 provided between opposite side frame bodies 1 standing upright. In the lifter for a physically handicapped person or the like, which is movable by the casters 5 provided at the lower portions of the both side frame bodies 1, each of the casters 5 has a nut 7 on a support plate 6 on the front and rear portions of the lower side portions of the frame body 1. Are fixed to each other, the bolts 8 on the upper portions of the casters 5 are screwed into the nuts 7, and the casters 5 can be moved up and down by turning the bolts 8 by the operating rod.

B The second lifter for the physically handicapped person according to the present invention is

2. A caster provided below the both side frame bodies 1 so that an elevating board 2 provided between opposite side frame bodies 1 can be lifted and lowered by a driving means 3 and a power transmission means 4. In a lifter for a physically handicapped person or the like, which is movable by 5, nuts 7 are fixed to support plates 6 on the front and rear sides of the lower portions of both side frame bodies 1 and bolts 8 on the top of each caster 5 are attached to the casters 5. Each nut 7 is screwed to each nut 7, and each cater 5 can be moved up and down by the rotation of the bolt 8 by the operating rod, so that the drive shaft 9 provided on the upper part of one side frame 1 is near the front part and the rear part. , Each of which is provided with two chain wheels 10, and each chain 4 wound around each of the wheels 10 as a power transmission means is passed through the front and rear inner portions of the lifting board 2 and the other side. Each end is hooked on the inner upper portion of the frame body 1, and in front of the drive shaft 9 One of each of the two chains 4 near the rear part and the rear part is wound around the chain wheel 10 so that it is usually looser than the other chain 4 for auxiliary power transmission.

[0011]

[Embodiment of the invention]

 In the structure of the lifter having the above structure, the both side frame bodies 1 are erected so as to be opposed to each other when viewed from the front, and the elevating board 2 on which a person with a physical disability, etc. gets in can be raised and lowered between the both side frame bodies 1. ing. Casters 5 are provided at the lower part of the side frame 1 near the front part and the rear part.

Each caster 5 is similar to a commercially available caster, in which the horizontal axis of each wheel is supported by a bracket having a U-shaped cross section, and the wheels can be turned around the vertical axis. On the upper part, a vertically long bolt 8 is erected. It should be noted that each bolt head 11 has a concavo-convex portion with which the tip of an operating rod (not shown) can be engaged from above.

In order to attach the caster 5 to the both-sides frame 1, the nuts 7 are fixed to the support plates 6 horizontally provided at the front and rear lower portions of the both-sides frame 1, and the bolts 8 are attached to the nuts 7. It is screwed together.

The elevating board 2 is composed of a top plate 2a and a board supporting member 2b located below the top board 2a. The elevating board 2 has a strength and an area such that a physically handicapped person can get in while sitting on a wheelchair. It is possible to ascend / descend by the drive means and the power transmission means while maintaining the horizontal state.

It is desirable to use, for example, an electric motor as a drive means for raising and lowering the lifting board 2, and to use a chain 4 that is wound around a drive shaft 9 by a chain wheel 10 mounted on the drive shaft 9 as a power transmission means.

The chain 4 is wound around two chain wheels 10 on the inner upper side of one side frame 1 and on the front and rear sides of the drive shaft 9, respectively. The other end is hooked on the inner side of the other side frame 1 toward the front and rear sides, respectively.

In the second lifter according to the present invention, the chain 4 as the power transmission means is wound around each of the two chain wheels 10 on the front and rear sides of the drive shaft 9. Of each of the two chains 4, each one chain 4 is wound around each chain wheel 10 so as to always receive the load, but each other one chain 4 is used for power transmission assistance. It is wound loosely from the other chain 4 so that the load is not applied normally and the load is applied only when the other is cut.

In order to loosely wind the chain 4 around the foil 10, the chain 4 itself may have a length or a short length, or the length of a hooking metal fitting 17 (for example, a chain bolt) for locking the other end of the chain 4 may be long or short. Alternatively, the mounting state of the metal fitting may be adjusted, or the height at which the other end is locked in the side frame 1 may be changed.

In the figure, reference numeral 12 denotes a chain wheel, which is provided on each of the front and rear sides of both sides of the elevating board 1 so as to be meshable with each chain 4 passing through the inner and lower parts of the elevating board 1. When the chain 4 is wound up and moved, the elevating board 1 can be raised and lowered via the chain wheel 12.

Reference numerals 13 and 14 denote front and rear slope plates, respectively, and are provided so that when a person with a physical disability or the like gets on or off the elevator board 2, the slope plates are inclined forward or backward.

The usage and operation of the lifter for the physically handicapped person according to the present invention are as follows. This lifter is used, for example, when a physically handicapped person is going up and down from a floor surface 15 to a place having a height difference such as on the stage of a theater. Since it is placed in another place where it does not get in the way when not in use, it is moved from there by caster 5 when trying to use it.

Each caster 5 in the present invention is lifted from the floor surface 15 or the like when the lifter is not moved, and the lower surface of the lifter, that is, the lower end surfaces of the both side frame bodies 1 is in contact with the floor surface 15 or the like. It is in the state of having done. Therefore, each bolt 8 on the top of each caster 5 is inserted into the head 11 of the operating rod, and the bolts 8 screwed into the nuts 7 are rotated in the descending direction (the right direction for a normal screw). Let

When the respective bolts 8 descend, the lower casters 5 come into contact with the floor surface 15 and the like, but by further rotating the bolts 8, the casters 5 move the lifter to the floor surface via the support plates 6. Etc. 15 lift. With this, the lifter can be easily moved by the casters 5, so the lifter is moved by pushing the floor surface 15 or the like to the side of the stage or the like.

Next, when each bolt 8 is rotated in the ascending direction (leftward with a normal screw) by the operating rod, each caster 5 comes up, so that the caster 5 moves away from the floor surface 15 and the lower end surface of the lifter ( The lower end surfaces of both side frame bodies 1 reach the floor surface 15 or the like and are placed. With this, the lifter becomes stable without any displacement, so that a person with a physical disability may walk or wheelchair to get on the lift board 1 from the front sloping plate 13 lowered to the floor surface 15 or the like.

When the electric motor 3 is rotated by operating an operation switch (not shown), the drive shaft 9 in the upper part of the side frame 1 on one side rotates, and the two chain wheels 10 near the front part and the rear part are rotated. Each of the wrapped chains 4 is wound up. At this time, the front and rear slop plates 13 and 14 are kept in a state of being raised upward so as not to interfere with the raising of the elevating board 2.

Each chain 4 passes through the inner lower portion of the elevating board 2, and the other end is hooked on the inner upper portion of the side frame 1 on the other side. Therefore, as each chain 4 is wound up, the elevating board 2 is gradually pulled up via the chain wheels 12 provided on the both sides of the ascending board 2 near the front and rear portions. If the electric motor 3 is stopped when the elevating board 2 is slightly higher than the stage or the like, idling is prevented by an attached motor brake (not shown), and the elevating board 2 maintains its position. . The rear slope plate 14 may be lowered onto the upper surface of the stage or the like, and the person with a physical disability may move from the rear slope plate 14 to the stage or the like.

After that, when the physically handicapped person descends from the stage to the floor surface 15 or the like, board the elevator board 2 in the elevated position from the rear slope plate 13 and use the operation switch to turn the electric motor 3 backwards. Rotate. Since the drive shaft 9 and each chain wheel 10 rotate in the reverse direction and each chain 4 that has been wound up descends, the elevator board 2 gradually descends accordingly. At that time, the front and rear slope plates 13 and 14 are leaned upward so as not to get in the way. After the elevating board 2 is lowered to the lowest position, the front slope plate 13 may be tilted forward, and a person with a physical disability may move to the floor surface 15 or the like from there.

After the lifter has been used, the bolts 8 on the casters 5 are rotated and lowered by the operating rods so that the casters 5 come into contact with the floor surface 15 and the lifters are lifted. This makes it easier to move the lifter. After moving the lifter to the specified place, rotate the bolts 8 to raise the casters 5 so that the lower end surface of the lifter reaches the floor surface 15 or the like in a stable state. You can put it on.

In the above-mentioned use state, the lifter according to the present invention is capable of moving up and down the casters 5 provided at the lower front and rear portions of the side frame 1. Further, since the chain 4 is used as the power transmission means, it is easy for people with physical disabilities to use this lifter.

That is, in general, in order to move the lifter by providing a caster on the lower part, the minimum ground clearance from the lower end surface of the lifter to the floor surface is usually about 30 mm in order to cope with unevenness of the floor surface or the like. is necessary. If the thickness of the lift board itself is, for example, 40 mm, the height difference from the floor surface to the top surface of the lift board is about 70 mm, which is the sum of the above-mentioned minimum ground clearance and the thickness of the lift board. At this step, even if a slope plate is installed, the inclination angle is large, and it is a considerable burden for people with disabilities to get on and off the elevator board.To reduce the inclination angle, the slope plate becomes long. I was stumped, and it was a stumbling block, and I got in the way.

However, in the lifter of the present invention, since each caster 5 can be raised and lowered, each caster 5 is used while being lowered when moving the lifter, but after the lifter is moved to a stepped place such as a stage. Raises the casters 5 so that the lower end surface of the lifter is attached to the floor surface 15 or the like. Therefore, the height from the floor surface 15 to the upper surface of the elevating board 2 is almost equal to the thickness of the elevating board 2 itself, which is about 40 mm in the above example. As a result, the slope angles of the slope plates 13 and 14 can be made smaller, so that a person with a physical disability can easily get on and off the elevator board 2, and the slope plates 13 and 14 can be shortened.

Further, as means for raising and lowering the raising and lowering substrate with this type of lifter, there are conventionally known hydraulic or pneumatic piston type, X-type pantograph type, feed screw type, etc., but these are lifters. The attachment members are attached to the lower portion or the inner lower portion of the elevating board (see, for example, Japanese Utility Model Laid-Open No. 7-315737 and No. 3021763, registered utility model publications). Therefore, even when the elevating board is moved down the most, the lower attachment member contacts the floor surface, etc., and the elevating board is located away from the floor surface, etc., and the elevating board itself becomes thicker. With this, even when the casters are lifted and the casters are lifted, the height difference from the floor surface or the like to the upper surface of the lift substrate remains large.

However, in the lifter of the present invention, the chain 4 is used as the power transmission means, and it is not necessary to attach anything to the lower part of the lifter, and the inner lower part of the lifting board 2 has a space for moving the chain 4. It only needs to be provided, and it suffices to provide the chain wheel 12 with which the chain 4 meshes on both sides. Therefore, the elevating board 2 can be lowered to almost reach the floor surface 15, and the elevating board 2 itself has a small thickness. From this point as well, since the height difference between the floor surface 15 and the upper surface of the elevating board 2 at the lowest position is almost the thickness of the elevating board 2 itself, the inclination angles of the slope plates 13 and 14 can be reduced, A person with a physical disability can easily get on and off the elevator board 2, and the slop plates 13 and 14 can be shortened.

Further, the power transmission means generally needs to be provided with an auxiliary mechanism in case of failure, but in the case of hydraulic or pneumatic piston type, X-type pantograph type, feed screw type and others, If it is provided twice, the mechanism becomes large, complicated and costly.

However, in the lifter of the present invention, the chain 4 is used as the power transmission means as described above, and each of the two chains 4 wound around each of the two front and rear chain wheels 10 of the drive shaft 9 is wound. Among them, each one chain 4 is normally wound around the chain wheel 10 more loosely than the other chain 4 for transmitting auxiliary power.

Therefore, the self-weight of the elevating board 2 and the load of a person on the elevating board 2 are normally wound around the chain wheel 10 of the two chains 4 provided near the front and rear parts of the elevating board 2. Each of the other chains 4 is received, and each of the chains 4 raises and lowers the elevating board 2. At this time, each one of the chains 4 as the above-mentioned auxiliary power transmission means is wound up and moved by the chain wheel 10 as well, but the load of the lifting board 2 and the like is not received.

If the chain 4 that is being lifted and lowered by the load of the elevating board 2 or the like is broken, immediately instead of that, the chain wheel 10 is loosely wrapped around the chain wheel 10 to receive the load. The other one, which was not present, will receive the load. Then, the ascending / descending operation of the elevating board 2 is continued.

Therefore, the lifter according to the present invention is equipped with the power transmission assisting mechanism, and the lifting board 2 at the lowest position is attached to the floor surface 15 as described above, and the lifting board 2 itself. The thickness of the slope remains thin, and the inclination angle of each slope plate 13 and 14 is made small from this surface as well, so that people with disabilities can easily get on and off the elevator board 2, and the slope plates 13 and 14 are shortened. ing.

[0039]

【Example】

 1 to 7 show an embodiment of a lifter for a physically handicapped person or the like according to the present invention. The both-sides frame 1 is provided symmetrically upright on both sides, and the lifting board 2 can be raised and lowered between them. The both-sides frame 1 is a square pipe 16 or L-shaped member in plan view. Form a quadrilateral base, which is erected on both sides of the base. As will be described later, most of the drive motor 3, the power transmission means 4, etc. are built in and covered with side plates.

An electric drive motor 3 as a driving means is provided on one side (right side when viewed from the front) of the both side frame bodies 1 near the upper part in the side frame body 1. As the power transmission means, a drive shaft 9 which is rotated by the motor 3 is axially supported in the front-rear direction, and two chain wheels 10 are provided adjacent to each other on the front side and the rear side of the drive shaft 9. It is axially mounted. Although not shown, a balance chain for maintaining the horizontal balance of the lifting board 2, a motor brake, a control panel, etc. are also built in the side frame 1.

One end of each chain 4 as a power transmission means is hooked by a hook 17 on the inner upper portion of the other side frame 1 (left side when viewed from the front).

As described above, the elevating board 2 is provided so that both sides thereof are guided between the both side frame bodies 1 and can be moved up and down while maintaining a horizontal state. An inner lower portion of the elevating board 2 has a space through which each chain 4 can pass, and two chain wheels 12 are provided adjacent to each other on both sides, near the front part and the rear part.

The elevating board 2 here receives the lower part of the upper surface plate 2 a by the board supporting member 2 b, and when the elevating board 2 is at the lowest position, the board supporting member 2 b has a rectangular shape formed by the square pipe 16. It enters into the inside of the base so that only the upper surface plate 2a is on the base.

As described above, the chain 4 is used as the power transmission means. As described above, the chain 4 is located in front of the drive shaft 9 of the shaft support near the inner upper portion of one of the side frames 1. Each of the two chain wheels 10 is axially mounted so as to be adjacent to the rear side and the rear side.

Further, each chain 4 passes from the side frame 1 on that side through the chain wheel 12 through the inner lower part of the ascending / descending substrate 2, and through the chain wheel 12 the inner upper part of the other side frame 1. It extends toward each side, and each end is hooked by a hook 17 on a horizontal plate provided near the top.

When the chain wheels 10 of the drive shaft 9 are rotated by the rotation of the electric motor 1 and the chains 4 are wound up, the chains 4 are received via the chain wheels 12 on both sides. The elevating board 2 is pulled up and rises. Further, when each chain 4 descends due to the reverse rotation of the electric motor 3, the elevator board 2 descends via each chain wheel 12 on both sides.

Casters 5 are provided in the lower part of the lifter, specifically, in the front part and the rear part near the lower part of both side frame bodies 1. Similar to the commercially available casters, each caster 5 is one in which the horizontal axis of each wheel is axially supported by a bracket having a U-shaped cross section, and a vertical axis is provided so that the wheels can be turned around. Vertically long bolts 8 are erected vertically as shafts, and a concavo-convex portion capable of engaging an operating rod is formed on a head portion 11 of each bolt 8.

Each of the casters 5 has a horizontal support plate 6 projecting from a front portion and a rear portion of the side frame 1 near the lower portion thereof, and nuts 7 are respectively provided in holes formed in the support plate 6. The nuts 7 are fixed and the bolts 8 are screwed into the nuts 7. Now, each caster 5 can be moved up and down by rotating the bolt 8.

When the lifters are lifted by the casters 5 by rotating and lowering the bolts 8 near the head 11 of each bolt 8, the descending position of each bolt 8 at that time is set. Caster positioning nuts 18 that come into contact with the upper surfaces of the nuts 7 are respectively screwed so as to be aligned.

Each chain 4 serving as a power transmission means has two chains each wound around each chain wheel 10 near the front and rear of the drive shaft 9 in the upper part of one side frame 1. Of the four, each one is a normal chain and receives the load of the elevating board 2 and the like, and can rotate the chain wheels 10 to raise and lower the elevating board 2.

The other one of the chains 4 is also wound around the chain wheel 10 in the same manner, but is normally wound around the chain wheel 10 loosely so that the load is not applied. For this reason, here, the overall length is made slightly longer than each of the above-mentioned one chain 4, and the other end is hooked on the inner upper portion of the other side frame body 1.

In the figure, 13 is a front slope plate, and 14 is a rear slope plate. When using it as a slope, it can be tilted forward and backward to make it horizontal, and when the lifting board 2 moves up and down. Each one can be raised upward so as not to get in the way. It is desirable that each of the slope plates 13 and 14 when they are raised up be temporarily hooked in that state so that they also serve as safety fences at the front and rear of the elevating board 2. If the front slope plate 13 is inclined forward and the rear slope plate 14 is inclined rearward when it is raised up, it becomes easy to return it to a horizontal state when it is used as a slope.

Reference numeral 19 denotes safety fences on both sides of the elevating board 2, which are erected on both sides of the elevating board 2. Reference numeral 20 denotes a caster protective cover, which is attached to the front and rear portions of the side frame 1 near the bottom of the casters 5 so as to cover each caster 5, and has a hole 21 formed in the upper portion, and an operating rod inserted from there. It can be engaged with the bolt head 11.

[0054]

[Effect of the invention]

 As is clear from the above, the lifter for the physically handicapped person according to the present invention has casters that can be moved as needed, but the height of the lifting board and the floor surface etc. when the physically handicapped person gets on and off the vehicle. The size of the slope plate can be made small and the slope angle of the slope plate can be made small and short, which makes it extremely easy for people with disabilities to use.

A) In this type of conventional lifter, even if a caster is provided in the lower part so as to be movable, a minimum ground clearance from the lowermost end surface of the lifter to the floor surface is required in order to cope with unevenness of the floor surface. If the thickness of the lifting board itself is added to it, the height difference from the floor surface to the top surface of the lifting board will be, for example, about 70 mm. It takes a considerable burden for people with disabilities to get on and off the elevator board, and the slope plate becomes long and bulky.

On the other hand, in the lifter according to the present invention, since each caster can be lifted and lowered, after each caster is lowered and moved to the place where the lifter is used, each caster is lifted to lower the lower end portion of the lifter. It will be used after it has reached the floor. In this state, the height from the floor surface to the top surface of the lifting board is almost the thickness of the lifting board itself, and the height difference from the floor surface is small. Can be shortened. That is, when a person with a physical disability gets on and off the lift board to use this lifter, the height difference on the lift board is small, and the slope plate has a small and short inclination angle. It will be extremely easy to use even for etc.

B) In the conventional lifter of this type, the lifting means of which is a conventionally known hydraulic or pneumatic piston type, X-shaped pantograph type, feed screw type, etc. These accessory members are attached to the lower part of the inner part, and the lifting board rises above the floor even at the lowest position, and the lifting board itself has a large thickness. In this case, even if the casters are lifted and the casters are raised, the height difference from the floor surface to the upper surface of the lift board remains large, and people with disabilities move from the slope board to the lift board. Getting on and off is a heavy burden, and the slope plate is long and bulky.

On the other hand, in the lifter according to the present invention, a chain is used as the power transmission means in the lifting means, and the chain can be wound up through the inner and lower parts of the lifting board. Therefore, it is not necessary to provide an additional member below the lifter, and the elevating board itself can be made thin. Therefore, the elevating board at the lowest position is almost attached to the floor surface, etc. The height difference to Therefore, even in this aspect, the inclination angle of the slope plate can be made small and short, so that a person with a physical disability can easily get on and off the elevator board.

C) In the conventional lifter of this type, when an auxiliary mechanism or a safety mechanism is provided in case of failure of the power transmission means, a hydraulic or pneumatic piston type, X-type pantograph type, or feed screw is used. If the formulas are duplicated, the mechanism becomes large, complicated and costly.

On the other hand, in the second lifter according to the present invention, the chain is used as the power transmission means, and the chain is provided adjacent to each two chain wheels provided near the front and rear portions of the drive shaft. Of the two chains, each one is slightly longer than the other one. Therefore, one of the shorter chains of the above two chains is always loaded, and the lifting / lowering board is lifted / lowered by the rotation of the chain wheel. If the chain breaks, it will take its place. Immediately after that, each of the longer chains is subjected to a load, and this chain continues the ascending / descending of the ascending / descending substrate by the rotation of the chain wheel.

As described above, the lifter according to the present invention has a power transmission means having a simple structure of an auxiliary mechanism and a safety mechanism, but the step from the floor surface to the upper surface of the elevating board does not change to a small level. The slope angle of the slope plate can also be kept small and short, making it extremely easy to use for people with physical disabilities.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a lifter for a physically handicapped person according to the present invention.

FIG. 2 is a perspective view of the embodiment shown in FIG. 1 when the elevating board is at the lowest position.

FIG. 3 is a perspective view of the embodiment shown in FIG. 1 when an elevating board is at an upper position.

FIG. 4 is a partially cutaway side view showing a state in which the casters are lowered in the embodiment shown in FIG.

FIG. 5 is a partially cutaway side view showing a state in which the casters are raised in the embodiment shown in FIG.

FIG. 6 is a vertical cross-sectional front view when the elevating board is at the lowest position in the embodiment shown in FIG.

FIG. 7 is a vertical cross-sectional front view when the elevating board is at the upper position in the embodiment shown in FIG.

[Explanation of symbols]

 1-side frame 11-bolt head 2-elevation board 12-chain wheel 2a-upper plate 13-slope plate 3-driving means, electric motor 14-slope plate 4-power transmission means, chain 15-floor surface, etc. 5 -Caster 16-Square pipe 6-Supporting plate 17-Latching metal 7-Nut 18-Positioning nut 8-Bolt 19-Safety fence 9-Drive shaft 20-Protective cover 10-Chain wheel 21-Hole

Claims (2)

[Utility model registration claims] 1. A caster 5 provided on a lower part of both side frame bodies 1, which allows a raising / lowering board 2 provided between opposite side frame bodies 1 to be raised / lowered by a driving means 3 and a power transmission means 4. In a lifter for a physically handicapped person or the like, which is movable by means of the above, in each of the casters 5, a nut 7 is fixed to each of support plates 6 on the front and rear sides of the lower portions of both side frame bodies 1, and a bolt 8 on each caster 5 is fixed. The nuts 7 are screwed together, and the bolts 8 are rotated by the operating rod so that the caters 5 can be moved up and down.
Lifter for people with physical disabilities. 2. A caster 5 provided on the lower part of both side frame bodies 1 so that an elevating board 2 provided between opposite side frame bodies 1 can be raised and lowered by a drive means 3 and a power transmission means 4. In a lifter for a physically handicapped person or the like, which is movable by means of the above, in each of the casters 5, a nut 7 is fixed to each of support plates 6 on the front and rear sides of the lower portions of both side frame bodies 1, and a bolt 8 on each caster 5 is fixed. The respective casters 5 can be moved up and down by screwing the nuts 7 and turning the bolts 8 by the operating rods, respectively, near the front and rear parts of the drive shaft 9 provided in the upper part of the inner side frame 1. Two chain wheels 10 are axially mounted, and each wheel 10
Each chain 4 as power transmission means wound around each
Through the inner and lower parts near the front part and the rear part of the elevating board 2, each end part is hooked on the inner upper part of the other side frame body 1, and each of the drive shaft 9 includes two parts near the front part and the rear part. A lifter for a physically handicapped person or the like, in which one of the four chains 4 is normally wound around the chain wheel 10 more loosely than the other chain 4 for auxiliary power transmission.