JP2018064682A - Folding care wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding care wheelchair that is rich in stability and safety.SOLUTION: The folding care wheelchair has essential component members composed of a handle pipe 1, seat member 5, front pipe 3, rear pipe 2, and a step pipe 4. By using these members and a plurality of connection members, the wheelchair is structured to have the main body made foldable simultaneously in the forward/backward directions and vertical direction. The wheel chair is characterized by the flip-up type armrest 8; which has one end vertically freely rotatably and attachably/detachably installed to the handle pipe by a pipe joint method; which has the lower end rotatably installed in the seat member, energized constantly upward by a built-in spring, and supported through a double pipe-structured extension type support pipe that is vertically movable for a fixed stroke; and which is composed of a pair of left and right L-shaped pipes with the tip end bent nearly orthogonally that is installed in a foldable manner linked with the chair main body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wheelchair suitable for elderly people who need nursing mainly and persons with physical disabilities, and is provided with a function as a wheelchair and a folding nursing care function provided with a function as a bathroom chair. Regarding wheelchairs.

  As this type of conventional folding nursing wheelchair, for example, a folding nursing wheelchair previously proposed by the applicant of the present application is known (see Patent Document 1). This foldable nursing wheelchair is not only suitable for elderly people who need nursing care and people with physical disabilities, but also has a function as a bathroom chair and a simple toilet, and a bathroom in a narrow space. It is a folding nursing wheelchair that is convenient for storage, storage, carrying and carrying in a dressing room, and its structure is such that a pair of left and right front handle pipes and rear pipe are pivotable up and down. A seat plate with a toilet seat is foldably attached, and a detachable step is attached to the lower part of the front handle pipe so that it can be pivoted back and forth and left and right. Further, a caster and a wheel are attached to the tip of the step pipe. A caster equipped with two mechanisms, a caster rotation lock mechanism and a wheel rotation lock mechanism that can be locked and released separately, is attached to both sides of the seat plate. A chair body that has a raised armrest, and that has a link mechanism provided between the front handle pipe and the rear pipe with the cross section of the front handle pipe and the rear pipe as a fulcrum and the seat surface support arm of the seat plate with the toilet seat. Has a structure that can be folded in the front-rear direction.

However, in the case of this kind of nursing wheelchair including the folding nursing wheelchair having the above configuration, there are problems described below.
The flip-up armrests provided on both sides of the seating surface are usually composed of a detachable pipe whose one end is pivotally attached to the front handle pipe so as to be vertically movable and the other end is detachable from the seat plate. As for the armrest itself, what was comprised by the linear member is common. However, in the case of a flip-up type armrest composed of such a straight member, it is particularly important to sit on the seat surface when using elderly people who need nursing care, people with weak legs, or physically disabled people. The left and right sides of the body are supported by armrests on both sides, so the body can be prevented from falling down in the lateral direction, but the front side of the body is in a state without a so-called fence, so when sitting on the seat There is a risk that the body is bent forward or falls forward, and the stability and safety during use cannot be said to be sufficient.

Japanese Patent No. 3840466

  The present invention has been made in view of the problems of the conventional folding nursing wheelchairs described above, and in particular, a seating surface in use of a wheelchair by an elderly person who needs nursing care, a person who has weak legs, and a disabled person. It is intended to provide a foldable nursing wheelchair that is extremely stable and safe enough not only to prevent the body from falling down in the lateral direction but also to prevent forward bending and tilting in the forward direction of the wheelchair. .

  The folding nursing wheelchair according to the present invention is a wheelchair having a function as a bathroom chair, and basically includes a handle pipe, a seat member, a front pipe, a rear pipe, and a step pipe as main components, and these members and Using a plurality of connecting members, the main body is configured to be folded in the front-rear direction and the vertical direction at the same time, and the gist thereof is to form a seating surface on a pair of handle pipes that are parallel to each other at a predetermined interval. A pair of seat members for pivoting is pivotably mounted in the vertical direction. Below the seat member, the upper end of the rear pipe is pivotally pivoted to the seat member so as to pivot in the front-rear direction. The upper end of the letter-shaped front pipe is pivotally mounted so as to be able to rotate in the vertical direction, and the concave connecting member is connected to the step pipe between the step pipes. Both right end portions are pivotally connected to be pivotable in the vertical direction, and are disposed in the front-rear direction between the concave connection member, the front pipe and the handle pipe, and the front end portion is connected to the concave connection member and the front pipe. The handle pipe and the step pipe can be opened and closed in the front-rear direction via a pair of left and right long connecting members pivotally attached to the handle pipe, respectively, and connected horizontally between the left and right rear pipes A tension spring for holding the concave connecting member substantially horizontally is hung between the rod and the concave connecting member, gripping the handle pipe and the seat member of the main body, and rotating the seat member upward The main body is simultaneously folded in the front-rear direction and the up-down direction by the action of the long connection member that connects the handle pipe, the front pipe, and the concave connection member in the front-rear direction. Foldable nursing wheelchair with left and right handle pipes with automatic locking mechanism on the left and right handle pipes, one end of the handle pipe being pivotable in the vertical direction and removable by a pipe joint system The lower end of the seat member is attached to the seat member so that it can be pivoted, and is supported by a built-in spring that is always urged upward by a built-in spring and can be moved up and down for a fixed stroke. A flip-up type armrest comprising a pair of left and right L-shaped pipes, the tip of which is bent at a substantially right angle, is provided to be folded in conjunction with the chair body.

  The main body open state automatic lock mechanism includes a stepped portion formed on a bottom surface of a handle pipe base of a seat member, and a protrusion on the top surface that can be engaged with the stepped portion from below. A cylindrical lever that is constantly urged upward by a spring built in the pipe and is vertically fitted to the handle pipe so as to move up and down for a fixed stroke; and pivotally attached to a side surface of the cylindrical lever; and The rotating force is always urged in a fixed direction by a spring hung between the cylindrical lever, and its tip is composed of a rotating arm that slidably contacts the bottom surface of the base of the sheet member. The projecting part automatically engages with the part to lock the open leg state of the main body, and when lowered against the spring built in the cylindrical lever handle pipe, the stepped part and the projecting part are separated. Unlocked That to be able to use those without a mechanism to the unlocked state is maintained by rotating the spring the rotating arm is hung between the cylindrical lever simultaneously.

  Since the present invention is configured as described above, in addition to its function as a wheelchair, it is foldable, so it is convenient for use in bathrooms and dressing rooms in a limited space and for storage, storage, carrying and carrying. Not only is there a pair of left and right flip-up armrests, but they are made up of L-shaped pipes, and the armrests have a guard function to support the body, so that elderly people who need nursing care and weakness in their legs and legs are particularly vulnerable Even people with physical disabilities can prevent forward bending or tilting of the wheelchair while using a wheelchair, and the stability and safety when using a wheelchair for nursing care are improved. .

It is a perspective view which shows one Example of the folding-type nursing wheelchair which concerns on this invention. It is a side view of a folding type wheelchair for nursing care same as the above. It is an enlarged side view which partially cuts and shows the attachment part of the flip-up type armrest of a folding type wheelchair for nursing care same as the above. It is an expanded side view which partially fractures and shows the support part of the flip-up type armrest of the folding type wheelchair for nursing care. It is a side view which shows the state which flipped up one side of the flip-up type armrest of a folding-type nursing wheelchair same as the above. It is explanatory drawing which shows the main body open leg state automatic lock mechanism of a folding-type nursing wheelchair same as the above, (a) is a side view which shows a locked state, (b) is a side view which shows an unlocked state. It is a side view which shows the state which folded the folding type wheelchair for nursing care same as the above.

  1 to 7, 1 is a handle pipe, 2 is a rear pipe, 3 is a front pipe, 4 is a step pipe, 5 is a seat member, 6 is a concave connection member, 7 is a long connection member, and 8 is a flip-up type Armrest, 9 is a flip-up type armrest mounting portion, 10 is a pivotal connecting member, 11 is a body main body open leg automatic locking mechanism, 12 is a front wheel caster, 12-1 is a front wheel, 13 is a rear wheel axle, and 13-1 is A rear wheel, 14 is a tension spring, and 15 is a spacer bar.

  That is, the basic configuration of the folding nursing care wheelchair according to the present invention includes a pair of left and right handle pipes 1 parallel to each other at a predetermined interval, and the handle pipe 1 is vertically moved by a pivot S1 via a bracket B1. A pair of left and right seat members 5, which are attached so as to be pivotable in the direction, are disposed between the handle pipe 1 and the seat member 5, and an end portion on the handle pipe 1 side is disposed at a lower portion of the handle pipe at a pivot S2. The end of the seat member 5 is fixed to the pivot connecting member 10 that is pivotably mounted in the vertical direction via a rear wheel axle 13 that is provided between the pivot connecting members 10. A pair of left and right rear pipes 2 attached to a pivot S3 through a bracket B2 so as to be pivotable in the vertical direction. One end of the rear pipe 2 is pivotally pivoted at a pivot S4 via a bracket B3. Dressed The left and right pair of substantially L-shaped front pipes 3, the step pipe 4 attached to the front end of the seat member 5 via the bracket B4 so as to be pivotable in the front-rear direction, and the left and right step pipes 4 is a bracket B5 attached by a pivot S6 to a bracket B5. Both ends of the bracket B5 are pivotally attached to a pivot S7 so as to be pivotable in the vertical direction. Is formed. A spacer bar 15 is provided between the left and right front pipes 3.

  Between the handle pipe 1, the front pipe 3 and the concave connecting member 6, when the chair body is folded in the front-rear direction, the front pipe 3 and the step pipe 4 are pulled toward the handle pipe 1 side in conjunction with the movement of the chair body. When the legs are opened, a pair of left and right long connecting members 7 are provided for performing the action of pushing the front pipe 3 and the step pipe 4 forward in conjunction with the movement thereof. The rear end of the connecting member 7 is attached to the lower part of the handle pipe 1 so as to be pivotable in the vertical direction by the same pivot S2 as the pivot coupling member 10, and the front end is pivoted to the front pipe 3 and the concave coupling member 6 to the pivot S8. , Attached at S9. A tension spring 14 for holding the concave connection member 6 substantially horizontally is hung between the concave connection member 6 and the connecting rod 2-1 provided horizontally between the left and right rear pipes 2.

Next, the flip-up type armrest 8 and its mounting structure will be described with reference to FIGS. The flip-up armrest 8 is composed of a pair of left and right L-shaped pipes that are formed by bending the tip at a substantially right angle so as to provide a guard function for supporting the user's body. 8 includes a straight portion 8-1 of one pipe and a bent portion 8-2 formed by bending the tip portion of the straight portion 8-1 at a substantially right angle. An attaching / detaching pin 8-4 provided so as to be freely protruded and retracted by a leaf spring 8-3 attached to is attached. On the other hand, on the handle pipe 1 side, a pipe joint 8-5 for attaching the rear end portion of the linear portion 8-1 is connected to the pivot S10 via a bracket B6 provided integrally with the pipe joint. It is attached so that it can rotate in the vertical direction. The pipe joint 8-5 is formed with an arc-shaped groove 8-7 having a desired length into which a detachable pin 8-4 provided so as to be freely retractable by the leaf spring 8-3 is fitted. When the pin 8-4 is submerged in the pipe and the rear end of the pipe is inserted into the pipe joint 8-5 and slid to the handle pipe 1 side, the detachable pin 8-4 is inserted into the arcuate groove 8-7. When positioned, the leaf spring 8-3 protrudes into the arc-shaped groove 8-7 and is jointed. In this state, the armrest 8 is rotated by a stroke defined by the arc-shaped groove 8-7 to thereby bend the bent portion 8. -2 can be horizontal and downward.
Further, as a means for supporting the flip-up type armrest 8, the upper end of the L-shaped pipe is attached to the bracket B7 attached to the front side of the pipe joint 8-5 at the base portion on the handle pipe 1 side of the L-shaped pipe. The lower end of the seat member 5 is fixed to a joint projection 8-9 that is rotatably attached to the handle pipe 1 side end of the side surface of the seat member 5 by the pivot S11. Further, it is attached so as to be supported by a pay-out-type support pipe 8-8. The feed-out support pipe 8-8 is composed of a double pipe comprising an inner pipe 8-8a and an outer pipe 8-8b, and the inner pipe 8-8a is a compression coil spring 8- mounted in the outer pipe 8-8b. 8c is always urged upward by a fixed stroke so that it can move up and down for a fixed stroke, and is further attached to a leaf spring 8-8d mounted in the inner tube 8-8a and penetrated through the outer tube 8-8b. When the stopper pin 8-8e, which can be projected and retracted from the hole, is pushed inward by a pin presser 8-8f provided by being externally fitted to the outer tube 8-8b, the inner tube 8-8a is fed out by the compression coil spring 8-8c. It is structured.

  Further, as shown in FIG. 6, the chair main body open leg state automatic lock mechanism 11 includes a stepped portion B1-1 formed on the lower surface of the bracket B1 of the base portion of the handle pipe 1 of the seat member 5, and the stepped portion on the upper surface. B1-1 has a protrusion 11-2 that can be engaged from below, and is attached to a shaft pin 11-3 that is loosely penetrated through a long hole 11-4 formed in the handle pipe 1 in the vertical direction. A constant stroke up and down defined by the long hole 11-4 is always urged upward by a compression coil spring 11-6 fitted between spring seats 11-5a and 11-5b provided in the handle pipe 1. A cylindrical lever 11-1 externally fitted to the handle pipe 1 as it moves, and pivotally mounted on the side surface of the cylindrical lever 11-1, and between the cylindrical lever 11-1. The tension spring 11-7 is always in a certain direction. It is energized power, and a rotary arm 11-8 Metropolitan its tip slides over the sheet member base lower surface. Reference numeral 11-9 denotes a protruding pressing lever provided on the side surface of the cylindrical lever 11-1.

  A pair of detachable steps 4-1 are attached to the lower portion of the step pipe 4 via a bracket 4-2 so as to be turnable in the front-rear and left-right directions.

  In the folding nursing care wheelchair having the above-described configuration, when the legs are opened, as shown in FIGS. 1 and 2, the front end portion is disposed between the concave connecting member 6, the front pipe 3 and the handle pipe 1 in the front-rear direction. Are connected to the concave connecting member 6 and the front pipe 3, and the rear end portion is held to the handle pipe 1 through a pair of left and right long connecting members 7 pivotably mounted. At this time, the concave connecting member 6 is held substantially horizontally by a tension spring 14 hung between the concave connecting member 6 and the connecting rod 2-1 provided between the left and right rear pipes 2.

  When getting on and off the wheelchair with the legs open, as shown in FIG. 5, the inner pipe 8-8a is pulled out by the pin holder 8-8f of the feed-type support pipe 8-8 of the flip-up armrest 8 and jumped. The raising armrest 8 is pivoted upward. When the wheelchair is used in the state where the legs are open, the pay-out type support pipe 8-8 of the flip-up type armrest 8 is operated to rotate the flip-up type armrest 8 downward to supply the pay-out type support pipe 8- At 8, it is held horizontally at a predetermined height position. At this time, the flip-up type armrest 8 operates the armrest mounting portion 9 so that the bent portions 8-2 of the L-shaped pipe face inward, and guards not only the back and left and right sides of the user's body but also the front portion. It is in a state to do. As a result, it is possible to prevent forward bending or tilting in the forward direction of the wheelchair while the wheelchair is in use, even for an elderly person who needs nursing care, a person with weak legs, or a physically handicapped person.

When the chair main body is folded, the handle pipe 1 and the seat member 5 are gripped and the seat member 5 is moved upward while the lock is released by lowering the cylindrical lever 11-1 of the main body open state automatic lock mechanism 11. Is pivotally mounted between the front pipe 3 and the handle pipe 1 such that the front end is pivotally attached to the concave connecting member 6 and the front pipe 3 and the rear end is pivotally attached to the handle pipe 1. By the action of the pair of left and right elongated connecting members 7, the chair main body is simultaneously folded in the front-rear direction and the vertical direction by a one-touch operation.
That is, when the seat member 5 is pushed upward from the lower side while the lock mechanism of the chair body is released, the rear pipe 2 rotates rearward as the rotary connecting member 10 rotates rearward, and interlocked with the rotation. Then, the front pipe 3 is folded while being pulled toward the rear pipe 2 side. Along with this folding operation, when the concave connecting member 6 is pulled by the long connecting member 7, the step pipe 4 is also turned inward and folded. At this time, the flip-up type armrest 8 is also turned and folded to the handle pipe 1 side via the pay-out type support pipe 8-8 as the seat member 5 is pushed up. As shown in FIG. 7, the chair body in the completely closed state is such that the handle pipe 1, the rear pipe 2, the front pipe 3, the step pipe 4, the seat member 5 and the concave connecting member 6 overlap each other in a substantially vertical state, and further spring. The lifting arm rest 8 is also in a state of being rotated in a substantially vertical state.

  When the wheelchair in the folded state is used, the operation of the rear pipe 2, the front pipe 3, and the long connecting member 7 is performed by opening the handle pipe 1 and the seat member 5 in the front-rear direction. As a result, the chair body is opened in the front-rear direction and the up-down direction, and the flip-up armrest 8 is also rotated forward by the opening operation and held horizontally at a predetermined height position.

DESCRIPTION OF SYMBOLS 1 Handle pipe 2 Rear pipe 2-1 Connecting rod 3 Front pipe 4 Step pipe 4-1 Step 4-2 Bracket 5 Sheet member 6 Concave connecting member 7 Long connecting member 8 Lifting type armrest 8-1 Pipe straight part 8 -2 Bending part of pipe 8-3, 8-8d Leaf spring 8-4 Removable pin 8-5 Pipe joint 8-7 Arc-shaped groove 8-8 Feeding type support pipe 8-8a Inner pipe 8-8b Outer pipe 8 -8c, 11-6 Compression coil spring 8-8e Stopper pin 8-8f Pin retainer 8-9 Joint projection 9 Lifting type armrest mounting part 10 Rotating connecting member 11 Chair body open leg automatic locking mechanism 11-1 Cylindrical lever 11-2 Protruding portion 11-3 Axle pin 11-4 Long hole 11-5, 11-5a, 11-5b Spring seat 11-7, 14 Tension spring 11-8 Rotating arm 11-9 Press lever 12 Front wheel caster 12-1 Front wheel 13 Rear wheel axle 13-1 Rear wheel 15 Spacer bar B1-B7 Bracket B1-1 Stepped part S1-S12 Axis

Claims (1)

  A pair of seat members for forming a seating surface is pivotally attached to a pair of handle pipes parallel to each other at a predetermined interval so as to be pivotable in the vertical direction, and below the seat member, the upper end of the rear pipe is attached to the seat member. The upper end of a substantially L-shaped front pipe is pivotally mounted on the upper part of the rear pipe so as to be pivotable in the vertical direction, and the left and right of the concave connecting member are connected to the step pipe between the step pipes. Both end portions are pivotally connected to be pivotable in the vertical direction, and are arranged in the front-rear direction between the concave connection member, the front pipe and the handle pipe, and the front end portion is connected to the concave connection member and the front pipe, and the rear end portion. The handle pipe and step pipe can be opened and closed in the front-rear direction via a pair of left and right long connecting members pivotally attached to the handle pipe. In addition, a tension spring for holding the concave connecting member substantially horizontally is hung between the connecting rod horizontally provided between the left and right rear pipes and the concave connecting member, and grips the handle pipe and the seat member of the main body, A structure in which the main body is simultaneously folded in the front-rear direction and the up-down direction by the action of the long connection member that connects the handle pipe, the front pipe, and the concave connection member in the front-rear direction by rotating the seat member upward. None, a folding nursing wheelchair with left and right handle pipes with automatic open-leg lock mechanism, one end of which is attached to the handle pipe so that it can be pivoted vertically and detachable by a pipe joint system The lower end of the seat member is pivotably mounted and is always urged upward by a built-in spring so that it can move up and down a certain stroke. A flip-up type armrest comprising a pair of left and right L-shaped pipes that are supported via a pipe-type payout-type support pipe and folded in conjunction with the chair main body and whose distal end portion is bent at a substantially right angle. Features a folding nursing wheelchair for nursing care.

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