JP2008264450A - Laterally movable electric/self-propelled wheelchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problem without damaging a present function or structure: in the case of moving indoors with a self-propelled wheelchair, a present wheelchair cannot move laterally, needs many quick turns, and so has an inefficient moving line; also, since there are self-propelled back wheels on the side from which it is easier to get on/off the chair, getting on/off is troublesome. <P>SOLUTION: Auxiliary wheels or electric freely moving wheels with electric control are installed inside a rear wheel drive part of the self-propelled wheelchair, they are moved up and down by a mechanical system or an electric system, and ground tires are switched to allow both free movements, such as a lateral movement, and electric self-propelling. Also, since the self-propelling rear wheels lift up by the wheels moved up and down, the rear wheels in a simple system bearing structure are removed, armrests are of a rotary movement type and moved backwards, and has a barrier free structure to allow getting on/off a bed or a car in the lateral movement. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention allows the current self-propelled wheelchair to move the auxiliary vehicle up and down electrically or manually and to float the rear wheel for self-propelled movement a little, so that it can be switched to electric tires and move in a flexible direction such as a lateral direction that is difficult to move. It is a dual-use wheelchair.

  The present invention makes it possible to easily remove the rear wheel for self-propelled floating with an auxiliary vehicle when a person gets in and out of a wheelchair, and to get on and off a bed, a car, an ile, etc. in the horizontal direction. It is a wheelchair.

  The present invention provides a brake structure for casters that is easy to operate even for passengers or the like when using the above-mentioned free vehicle.

  In the case of the current self-propelled wheelchair, the left and right of the rear wheel can be rotated and moved while changing the direction of the front and back and the angle.

  However, if you need complicated traffic lines such as work in a narrow aisle or indoors, you have to move while turning many times, if you want to take a horizontal object, or if you want to move a little more, with one hand There are many serious problems such as holding things.

  In the case of a self-propelled wheelchair, there are rear wheel drive units, armrests and wheel protection units on both sides, and it is difficult to get on and off from the front of the feet.

`` These improvement measures '' include a free auxiliary vehicle attached to the lower part inside the rear wheel drive part, and it can be moved up and down to switch to self-propelled and move laterally. By lifting the wheel part, the tires for getting on and off are removed by a simple detachable type so that it can be slid horizontally when getting on and off the bed or toilet.

  The problem to be solved is that when a wheelchair is used in a room, etc., when moving or working, complicated flow lines increase, so it is necessary to increase the number of turns, and in the case of the self-propelled type, both hands cannot be opened. There is a need for a wheelchair that can work with one hand and move with the other.

  In addition, when getting on and off a wheelchair, there are rear wheels and armrests in the current structure, which is difficult regardless of whether or not care is provided. It is easier to get on and off from the side than to get on and off from the feet. For this reason, it is necessary to have a structure that does not get in the way when the rear wheels and armrests are unnecessary.

  In addition, the current free wheel (caster) has a problem in the brake structure, and it is difficult for the rider to operate it.

  The rear wheel (drive unit) of the self-propelled wheelchair is floated by the wheel of a free wheel caster system or the wheel of an electrically driven free wheel caster (angle control, progress control) system, and the drive wheel is switched to change the direction of travel freely. Can be obtained.

  Since unnecessary rear wheels are floating when getting on and off the wheelchair, it is removed by a simple detachable type, and the armrest is rotated in the rear upper direction, so that it can move from the side of the seat and get on and off in the lateral direction.

  Since the wheelchair of the present invention can be moved laterally with one hand even in a narrow room, the wheelchair of the present invention can exert its power even when doing housework or work such as holding an object with another hand. In addition, it is possible to have a structure with few steps in the horizontal direction when getting on and off, and both users and caregivers can get on and off more easily than current wheelchairs.

  The present invention is a structure that shares the advantages of self-propelled wheelchairs and electric wheelchairs, and is mainly used for self-propelled and electric drive vehicles when it is difficult to self-propelled or for lateral movement when getting on and off. It is a wheelchair that can be used for nursing and independence.

  FIG. 1 is a side configuration diagram of an embodiment of the device of the present invention [claimer 1], and shows the position and structure of a self-propelled rear wheel.

  Switching between the self-propelled wheel and the electrically driven freewheel can be changed to a free-wheeling vehicle by lifting the self-propelled rear wheel from the ground by manually or electrically moving (lever cam) up and down in FIGS. You can go in any direction, such as or diagonally.

  1 and 2 are shown in FIG. 3. The structure of the caster is composed of a drive tire 10, a drive servo motor 9, an angle control servo motor 8, and the control lever 7 controls the electric signal from the control panel to the upper and lower units. The structure is such that each servomotor is commanded and the angle control servomotor 8 can rotate and move from A to B in any direction.

For example, after self-propelled, if you put things on the workbench on the shelf from left to right, it may be necessary to turn back and turn many times and close to the shelf, and it may be difficult to change the direction due to the relationship between your feet. By simply tilting the electric drive lever to the right, the electric drive type freewheel can be lowered and moved to the right. Electric drive can be released by manual switch or by self-propelled (turning the rear wheel by hand), the self-propelled rear wheel hub is transmitted to the control circuit, and the drive unit is raised. Self-propelled wheels can be driven.

  Since the self-propelled rear wheel can be lifted by an auxiliary vehicle in order to enable the lateral movement of the present invention [Biller 2] that is easy to get on and off, the axle stoppers 1 and 5 can be simplified (lever etc.) to be easily removed. The armrest has a structure that rotates to the rear upper part and moves rearward with FIGS. 1 and 1 as a fulcrum.

  For example, when getting on and off the bed, if Fig. 2 or 3 is a non-driveable vehicle, the distance between the sides of the bed will be kept parallel and the driving wheel will be changed by manual or electric control levers Fig. 2 and 7 2 and 4 are removed, the removed wheel is hung on the rear or on the opposite side, the space for removal is moved (pulled by hand or electrically moved), moved laterally from the waist, and removed in the case of the electrically driven type in FIG. There is little need to choose a position.

  The present invention [Biller 3] is a brake structure when using each universal vehicle of the previous embodiment, and the brake part for stopping the wheel of FIGS. 4 and 11 is placed on the direction rotation center, and even if the direction of the caster rotates. The structure is unaffected. Bearing type such as the front wheel is a mounting position where the shaft is hollow or reinforced by slightly shifting the rotating core, and the shaft center of the brake part is secured. A brake lever was installed between the two.

  The wheelchair of the present invention is a wheelchair having a structure useful for nursing care and self-supporting behavior, such as being able to remove a self-propelled wheel in addition to convenience and dual-use for both self-propelled and electric use.

It is the side block diagram which showed the implementation method of a two-wheeled wheelchair. It is the back block diagram which showed the implementation method of a two-wheeled wheelchair. It is a block diagram of the electric freewheel vehicle of Claim 1. It is a block diagram of the brake for free vehicles of Claim 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Armrest rotation part 2 Free vehicle raising / lowering part 3 Free wheel 4 Self-propelled wheel 5 Simple axle lever 6 Electric signal detection hub 7 Movement lever 8 Direction control motor 9 Movement motor 10 Movement tire 11 Brake part

Claims (3)

  A self-propelled wheelchair that moves up and down on a normal self-propelled wheelchair or a two-wheeled wheelchair that floats the rear wheel for self-propelled movement and enables lateral movement and oblique movement.   The wheelchair as described in the preceding item, wherein the self-propelled rear wheel can be removed so that it can be moved laterally easily when the user moves on and off the bed or toilet in the upper and lower structure of the free vehicle described in the previous item. The wheelchair according to claim 1, wherein the wheelchair has a brake structure that can be remotely operated when using the free vehicle of each claim.

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