JP2000316910A - Assisting device for standing-up or sitting-down action - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assist smooth actions of a person using a wheel chair for standing up from the wheel chair or the like by providing a seat section rotatably fixed to a main body of the wheel chair and by moving the seat section to an adjacent waist position for a standing-up or a sitting-down action of the person using the wheel chair with a driving means. SOLUTION: An assisting device has a base bottom plate 2 and an upper surface plate 3 which are rotatably fixed to each other with a hinge. A belt providing a tearable fixing means at an edge section is fixed to the base bottom plate 2. This assisting device 1 is loaded on a seat section of a wheel chair and is fixed to the seat section with the belt. The assisting device 1 provides a hydraulic jack 7 as a driving means. When a person using the wheel chair rotates a control lever of the hydraulic jack 7, the hydraulic jack 7 is moved extending to rotate a rotating member 10, and the upper surface plate 3 is moved inclining to an adjacent waist position for standing-up and sitting-down actions of the person using the wheel chair to assist the both actions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stand-up or stool movement assisting device for facilitating stand-up or stool movement from a wheelchair or the like for a user such as a disabled person sitting on a wheelchair.

[0002]

2. Description of the Related Art When a user sitting on a wheelchair moves from a wheelchair to a toilet, or gets on a car from a wheelchair, it is absolutely necessary to get up from the wheelchair. In this case, since a large rising force is required to raise the center of gravity of the body at the beginning of the rising operation, caregiver assistance may be required or the caregiver may be stuck. In the initial stage of the rising motion, a particularly large rising force is required, so that it is a considerable burden for the caregiver as well as the person trying to perform the rising motion, and may cause a backache of the caregiver.

[0003] Conversely, when the user leaves the wheelchair, the intended task is completed, and the user sits on the wheelchair, a large force is similarly required to position the user's waist at a predetermined position on the seat. , And a considerable burden on the person and the caregiver.

[0006] Japanese Utility Model Laid-Open No. 6-48639 proposes a wheelchair in which a pantograph-type lifting mechanism is driven by using a hydraulic cylinder so that a seat can be moved up and down horizontally.

Japanese Unexamined Utility Model Publication No. Hei 6-57246 discloses an 8-point fulcrum rhombic jack with a forward / reverse screw and a pressing spring.
2. Description of the Related Art A seat chair has been proposed in which a forward / reverse rotation screw is rotated by a motor to move a chair body up and down horizontally.

[0006]

Problems to be Solved by the Invention
In the wheelchairs described in Japanese Patent Laid-Open Publication No. Hei 6-57246 and Japanese Unexamined Utility Model Publication No. Hei 6-57246, the posture of the user of the wheelchair cannot be shifted to the middle waist state only by raising the seat horizontally. Therefore, the burden on the caregiver is still large. Also, these wheelchairs are complicated in structure. Therefore, it is difficult to adopt a widely used collapsible wheelchair.

The present invention is applicable to widely used collapsible and non-collapsible wheelchairs, which can not only raise the center of gravity of a wheelchair user but also shift the posture to a mid-lumbar state. An object of the present invention is to propose a standing or sitting motion assisting device that can also be used.

[0008]

According to the present invention, there is provided a base plate mounted on a seat of a wheelchair and fixed to the wheelchair, a top plate rotatably fixed to the base plate, and And a driving means for rotating the face plate, wherein the driving means moves the upper surface plate to a position near the waist position of the wheelchair user standing up or sitting down to assist the operation.

The present invention includes a seat portion rotatably fixed to a body of a wheelchair, and driving means for rotating the seat portion, and the driving means allows the seat portion to be raised or lowered by a wheelchair user. It is moved to the vicinity of the waist position of the sitting motion to assist the motion.

In one embodiment, the driving means is a hydraulic jack having one end fixed to the base plate and the other end fixed to the rotating member.

[0011]

FIG. 1 is a perspective view of a stand-up or stool assisting device (hereinafter simply referred to as an assisting device) 1 according to the present invention. The auxiliary device 1 includes a base plate 2 and an upper plate 3 that covers the base plate 2. The base plate 2 and the upper plate 3 are rotatably fixed to each other by hinges 4. Belts 5a and 5b are fixed to the base plate 2, and fixing means (for example, magic tape) that can be peeled off from the belts 5a and 5b
5c and 5d are provided, and the belts 5a and 5b can be fixed to each other.

FIG. 2 is a perspective view when the auxiliary device is mounted on a seat portion of a general collapsible wheelchair. In this figure, the right armrest of the wheelchair is omitted. The auxiliary device 1 is placed on the seat 6a of the wheelchair 6, and the auxiliary device 1 is fixed to the seat 6a of the wheelchair 6 using belts 5a and 5b. Therefore, it can be attached to and detached from an existing wheelchair as needed.

The auxiliary device 1 is provided with a hydraulic jack 7 as a driving means, and as described below, a user of the wheelchair (hereinafter abbreviated as “user”) is provided with a second portion 7 d of a lever of the hydraulic jack 7. By rotating the rotating member 1
2, the upper plate 3 can be tilted to the vicinity of the waist position of the wheelchair user standing up or sitting down as shown in FIG. 2 to assist both operations.

[0014] The hydraulic jack may move the rear portion of the upper plate, for example, by about 1-10c for each rotation of the lever.
m, or 1 to 15 cm, and is configured to be raised or lowered to a predetermined position at a plurality of steps and at a slow speed so as not to fear the person sitting in the wheelchair. I have. In addition, even if it is not stepwise, it may be configured to raise or lower to a predetermined position in one operation, but in this case, particularly, a person sitting in a wheelchair does not have fear. It is necessary to raise at a slow speed.

Here, the predetermined position is a position near the waist position of the wheelchair user standing up or sitting.
More specifically, it changes depending on the person sitting in the wheelchair, but at the beginning of the rising motion or at the beginning of the stool motion, not only raises the center of gravity of the user of the wheelchair, but also shifts the posture to the middle waist state, It is one of the objects of the present application to assist the rising motion or the sitting motion of the human being, and in that sense, specifically, about 20
It is considered to be about 60 cm, and about 30 cm is considered to be average. However, since the predetermined position varies depending on the person sitting in the wheelchair, the predetermined position may exceed 20 to 60 cm.

FIG. 3 is a top view of the auxiliary device 1 with the upper plate 3 removed. FIG. 4 shows the auxiliary device 1 in FIGS.
FIG. 4 is a sectional view taken along line AA of FIG. One end 7a of hydraulic jack 7
Is rotatably fixed to a mounting member 8 fixed to the base plate 2. That is, one end 7 a of the hydraulic jack is rotatably fixed to the base plate 2.

A support 9 is provided at a central portion of the base plate 2,
A pivot member 10 is attached to the column 9 so as to be rotatable around a first pivot axis 9 a that penetrates the upper region of the column 9 in parallel with the base plate 2. The rotating member 10 is provided with a second rotating shaft 10a parallel to the base plate 2, and the tip of a piston 7b, which is the other end of the hydraulic jack 7, is rotatable about the second rotating shaft 10a. Installed. Although the hydraulic jack 7 is schematically shown in a cylindrical shape in this figure, it is preferable to use a flat hydraulic jack having a small thickness and a wide width.

A first rotating shaft 9a and a second rotating shaft 10a
Is arranged such that when the piston 7b of the hydraulic jack 7 extends, the other end 10b of the turning member 10 turns around the first turning shaft 9a in a direction away from the base plate 2. .

The other end 10b of the rotating member 10 is in contact with the lower surface of the upper plate 3. Accordingly, when the rotating member 10 is rotated by the extension of the piston 7b, the upper surface plate 3 is pushed up from below. As a result, the upper surface plate 3 rotates about the hinge 4. The other end 1 of the rotating member 10
In order to disperse the pushing force due to Ob, it is preferable that an elongated contact member 3c made of a rigid material and extending in the width direction of the auxiliary device is provided on the upper surface plate 3.

The auxiliary device 1 is arranged on the seat so that the hinge 4 is located at the front edge of the seat. Therefore, when the piston 7b extends, the rear part of the seat rises as shown in FIG.

In this embodiment, the hydraulic jack 7 has an L-shaped lever composed of a first portion 7c and a second portion 7d, and the first portion 7c close to the hydraulic jack 7 is guided by a guide 7e. ing. A ratchet mechanism is provided between the first part 7c and the second part 7d, and the user repeatedly lifts and lowers the second part 7d farther from the hydraulic jack 7 with his / her arm to perform the first part 7d. By rotating the portion 7c, the hydraulic jack 7 is driven, the piston 7b is extended, and the rotating member 10 is rotated.

When the rotating member 10 rotates, the upper surface plate 3 is pushed up from below and rotates, and as shown in FIG. 2, the upper plate 3 is moved to a position near the waist position of the wheelchair user in the rising motion. At this time, the waist of the user has already been lifted by the upper surface plate 3, and the center of gravity has moved slightly forward, so that the user is in a middle waist state. Therefore, the burden on the caregiver when standing up from this state is small.

By pressing a button 7f provided at the end of the second portion 7d of the lever, a release valve (not shown) provided between the first and second hydraulic chambers (not shown) in the hydraulic jack opens, The hydraulic pressure is released. By pushing the top plate downward in this state, the top plate is lowered,
It returns to the state of FIG.

FIG. 5 is an explanatory view conceptually showing the operation and action of the stand-up or stool assist device according to the present invention when the user stands up from the wheelchair.

(1) About Assistance of Standing-Up Operation (a) is a state in which the user 11 is using a wheelchair. The user 11 is sitting on the auxiliary device 1 fixed on the seat 6a of the wheelchair 6. (B) is the user 11
Shows a state in which the hydraulic jack 7 is driven by pulling up the second portion 7d of the lever. (C) shows a state in which the rear part of the upper surface plate 3 is raised by the action of the hydraulic jack, and the wheelchair user stands up or is inclined near the waist position of the stool, resulting in the state in which the user 11 is in a middle waist state. Show. In the state (c), the center of gravity of the user is higher than the sitting state, and the center of gravity has moved to the front of the wheelchair, so that it is easy for the caregiver to lend his shoulders and support his arms. It is. Further, it is easy for a user with a small degree of disability to move to a toilet, a bed, a car, or the like by himself.

(2) Regarding assistance for stool operation Conversely, when the user shifts from a standing state to a state of trying to sit on a wheelchair, the standing or stool assisting device according to the present invention is switched to the state shown in FIG. After the user sits on the inclined upper surface plate 3 and gradually releases the hydraulic pressure of the hydraulic jack, the user can move from the state of FIG. 5C to the state of FIG. Can be gradually shifted to the state. Therefore, even when the user sits down, according to the auxiliary device of the present application, the labor of the user and the caregiver can be efficiently reduced.

According to the prior art, since the waist was not supported from below until the user lowered the seat from the middle waist state, the waist could be hit against the seat, and the user was uneasy. . The use of the stand-up assisting device according to the present invention allows the user to sit safely, thereby giving a sense of security.

The upper surface plate 3 of the auxiliary device 1 has a peripheral edge
It is also possible to form a box having a and 3b. The thickness d of the box is preferably 30 mm or less so that the height of the seat does not change much as compared with the case of an existing wheelchair.

The side plates 3a, 3b of the upper plate 3 are inserted between the base plate 2 and the upper plate 3 so as not to injure a finger or the like.
The material is soft and easily deformable, for example, cloth,
It is preferable to select from a thin synthetic resin plate or the like. It is also preferable to close the space between the base plate 2 and the top plate 3 with a bellows-like cover.

The base plate 2 is provided with a stopper 2a for preventing the distance L between the tips of the side plates 3a, 3b of the upper surface plate 3 and the base plate 2 from falling below a predetermined value so as not to pinch a finger or the like. Is also preferred.

Button 7 for releasing hydraulic pressure of hydraulic jack
Although f is provided at the tip of the second portion 7d of the lever in this embodiment, it may be provided independently of the lever.

Since the hydraulic jack 7 must be accommodated between the base plate 2 and the upper plate 3, the thickness is limited. Therefore, the hydraulic jack 7 preferably has a flat shape with a thickness of 20 mm or less and a width substantially corresponding to the width of the base plate 2.

When the wheelchair is of an electric type and equipped with a battery, an electric motor can be used as a drive device instead of the hydraulic jack. In this case, the rotational movement of the rotating shaft of the electric motor is converted into the rotational movement of the rotating member 10 using a worm gear or the like. Alternatively, the upper plate 3 may be rotated by air pressure using a compression pump or the like as a driving device. In this case, the compression pump is operated at appropriate times to adjust the air pressure for rotating the top plate 3, thereby making the top plate 3
Can be adjusted and raised and lowered.

The means for fixing the auxiliary device 1 to the seat is not limited to the fixing means 5c and 5d, but may be fixed or semi-fixed to the seat using, for example, screws. The wheelchair shown in FIG. 2 is a type of a wheelchair that can be folded so that the right and left wheels approach each other. In such a type of a wheelchair, only one side edge of the base plate 2 of the auxiliary device is attached to the wheelchair frame. The auxiliary device may be configured so as to be rotatable around the frame and not to hinder the folding of the wheelchair. In this case, it is preferable that the base plate 2 and the top plate 3 are fixed to each other by a locking means (not shown).

In the above-described embodiment, an existing wheelchair is provided with a detachable standing or sitting motion assisting device. However, the present invention is not limited to this type. That is, the seat portion 6a fixed to the wheelchair main body may be configured to be rotatable with respect to the wheelchair main body so as to perform the same function and operation as the upper surface plate 3 of the above-described embodiment. The wheelchair user may be configured to move to the vicinity of the waist position of the standing or sitting motion to assist the two motions. However, in this case, the wheelchair is mainly not of a folding type.

[0036]

According to the auxiliary device of the present invention, a user of a wheelchair can assist a standing operation from a wheelchair or the like without changing the structure of an existing wheelchair. In addition, when sitting in a wheelchair, the user can support the lower back from the state of being in the middle waist down to sitting down on the seat portion, and can assist the seating operation. When a hydraulic jack is used as the driving means of the present invention, no electric energy source is required.

[Brief description of the drawings]

FIG. 1 is a perspective view of a standing or sitting motion assisting device according to the present invention.

FIG. 2 is a perspective view when the auxiliary device is mounted on a seat portion of a general collapsible wheelchair.

FIG. 3 is a top view of the auxiliary device with a top plate removed.

FIG. 4 is a sectional view of the auxiliary device taken along line AA of FIGS. 1 and 3;

FIG. 5 is an explanatory diagram conceptually showing an operation and an action of the stand-up or sitting motion assisting device according to the present invention when a user stands up from a wheelchair.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rise or sitting motion assisting device 2 Base plate 2a Stopper 3 Top plate 3a, 3b Side plate 4 Hinge 5a, 5b Belt 5c, 5d Fixing means 6 Wheelchair 6a Seat part 7 Hydraulic jack 7a One end of jack 7b Piston 7c First Part 7d Second part 7e Guide 7f Button 8 Mounting member 9 Post 9a First turning axis 10 Turning member 10a Second turning axis 10b The other end of the turning member 11 User

Claims (3)

[Claims] 1. A base plate mounted on a seat portion of a wheelchair and fixed to the wheelchair, an upper surface plate rotatably fixed to the base plate, and driving means for rotating the upper surface plate. Comprising, by the driving means, the top plate is moved to the vicinity of the waist position of the wheelchair user standing or sitting motion,
A rising or sitting motion assisting device, which assists the motion. 2. A vehicle comprising: a seat portion rotatably fixed to a body of a wheelchair; and driving means for rotating the seat portion, wherein the driving means raises or sits on the seat portion by the user of the wheelchair. A rising or sitting motion assisting device, which is moved to the vicinity of the waist position to assist the motion. 3. The stand-up or stool according to claim 1, wherein the driving means is a hydraulic jack having one end fixed to the base plate and the other end fixed to the rotating member. Motion assist device.