JP4996374B2 - Wheelchair footrest fixture - Google Patents

Description

  When the footrest placed on the front of the wheelchair is rotated and placed on the footrest, the footrest will not drop even if the foot is placed on the footrest, and the foot of the occupant can be held stably. The present invention relates to a footrest fixture.

  In many cases, footrests are attached to the front left and right frames of the wheelchair, and when riding on a wheelchair, the footrests on both sides are opened and the wheelchair is placed near the seat of the wheelchair. After getting on the wheelchair, close the footrest and put the feet on it as two parallel foot plates. In this way, there is a gap between the two footrests due to the opening and closing of the footrest, and the foot is placed on the footrest in an unstable state. For this reason, improvement of the footrest for placing the foot stably has been studied.

  According to claim 1 of Patent Document 1, “a leg pad attached to a leg pipe extending in a substantially vertical direction is a leg pad attachment structure in a wheelchair attached to the leg pipe so as to be adjustable in height. The leg pad has a sleeve portion through which the leg pipe is inserted, and is separated from the upper and lower sleeve portions along the axial direction of the leg pipe, and is installed on the leg pipe between the upper and lower sleeve portions. A mounting structure for a leg pad in a wheelchair, wherein the fixed stopping member is inserted and fixed to the leg pipe so as to be movable in the axial direction and fixed thereto. Is disclosed.

  Claim 1 of Patent Document 2 states that “a footrest is a mounting structure for a footrest in a wheelchair configured to be attached to a mounting shaft extending substantially vertically forward from the lower end of the leg pipe, and the footrest includes the mounting shaft. A sleeve portion to be inserted is disposed, and the sleeve portion is externally mounted on the mounting shaft so as to be rotatable in a circumferential direction of the mounting shaft, and a stopper member externally mounted on the mounting shaft in the vicinity of the sleeve portion. The stop member is mounted so as to be pivotable and fixable in the circumferential direction with respect to the mounting shaft, and restricts the pivot position of the footrest at a foot support position. A structure for mounting a footrest in a wheelchair, characterized in that the structure is provided with a portion. "

  Paragraph (0004) of Patent Document 3 “In the first aspect of the present invention, only one of the manual levers swings the foot support left and right simultaneously in the front-rear direction, opens and closes the footrest, and moves the footrest in and out. The brakes can be operated at the same time with only one manual lever, which not only reduces fatigue for patients and caregivers, but also makes the space clean and speedy, and when the patient gets on and off, it has a large space where there are no obstacles at the feet. It has the effect of being able to act safely when changing toilets and cars, etc. In addition, when the patient gets down, the feet are lowered from the front to the floor, and when seated, the structure is designed to crawl from the rear. Therefore, the goal is to make it easier for passengers to get on and off without assistance if the patient lifts his / her foot slightly while sitting and operates these two levers in a timely manner. ” It has been disclosed.

  According to claim 1 of Patent Document 4, “a slide body that slides back and forth is provided in a housing portion formed in a vehicle body floor portion in front of a seat, the slide body is covered with a carpet, and a foot of a seated person is There is disclosed a foot support device in which an angle adjusting mechanism for adjusting a lifting angle of the foot support plate is provided between the supporting foot support plate and the slide body.

Although various forms of footrests have been devised as described above, there is still no footrest that allows the occupant to put his / her feet on the left and right footrests safely, and the left and right footrests are stably held, The appearance of a footrest that allows people to rest on their feet when sitting on the ground is desired.
JP 2000-102666 A JP 2001-238918 A JP 2005-021538 A JP 2005-255084 A

  In order to make getting on and off the footrests of conventional wheelchairs easier when getting on and off, open the footrests to the left and right to get on and off the wheelchair, and while sitting, the left and right footrests are parallel in front of the wheelchair Used by the occupant to put his feet down. In order to make it easier to open and close the footrest when getting in and out of a wheelchair, a gap is usually provided between the left and right footrests when the footrest is lowered in parallel. For this reason, when the occupant placed his / her foot on the footrest, the footrest was lowered by weight and was unstable.

  In view of the above fact, the present invention can easily fix the left and right footrests by placing the left and right footrests in parallel after sitting on the wheelchair when the footrests open and close to the left and right when getting on and off the wheelchair. It is intended to provide a footrest fixture that can be placed with peace of mind without falling.

  As a result of intensive research to solve the above problems, the footrest fixtures with concave or convex portions were attached to the back surfaces of the left and right footrests respectively, and when the footrests were lowered, they were attached to the back surfaces of the footrests. The concave and convex portions of the footrest fixture are fitted together to solve the problem of the present invention by supporting the footrest from below.

  A feature of the present invention is a footrest fixing device that is attached to the back surface of a footrest arranged side by side on the left and right of the front part of a wheelchair, and includes an engagement recess having a slope formed on one side of the recess and the one side It comprises an engaging convex part formed with a convex part having a slope that engages with a concave part formed with a slope, and can be engaged with the engaging concave part and the engaging convex part via a footrest support member, At least one left and right footrest are attached to the back of the footrest, and when the footrest is used, the engaging recess and the engaging protrusion of the fixture of the footrest attached to the back of the left and right footrest engage to An engagement convexity having a concave portion formed with a concave portion having a slope on one side and a convex portion having a slope engaging with the engagement concave portion having a slope on the one side, characterized by being connected and fixed Footless It is a fixture. A footrest fixture comprising an engaging recess having a concave portion having a slope on one side and a convex portion having a slope engaging with the concave portion having the slope on the back surface of the footrest of the wheelchair. Attached to the back of the left and right footrests via the footrest support members, and when the left and right footrests are lowered, the engaging projections with slopes fit along the slopes of the engaging recesses of the footrest fixture The footrest is firmly supported from below. By providing a slope on one side of the engagement recess and providing the slope on the engagement protrusion so as to engage along the slope, the engagement between the recess and the protrusion becomes smooth.

  Another feature of the present invention is a footrest fixture that is attached to the back surface of a footrest arranged side by side on the left and right of the front part of the wheelchair, the engaging recess having a slope formed on one side of the recess and the one An engaging convex portion having a convex portion having a slope engaging with a concave portion having a slope formed on the side, and a metal rod is passed through the center of the concave portion having the inclined surface formed in the engaging concave portion. A concave part that fits the metal bar is provided at a position where the convex metal bar having the slope of the convex part comes into contact, and when the engaging concave part and the engaging convex part of the fixture of the footrest are fitted, the concave part and the convex part In addition to the engagement of the portion, the recess provided in the engagement convex portion is further fitted to the metal rod attached to the engagement concave portion to prevent the footrest fixture from sliding. The engagement concave part in which the concave part which has a slope in one side of Claim 1 was formed, and has a slope in the said one side A fixture footrest consisting engaging protrusion having a convex portion formed with an inclined surface that engages the engagement recess. An engaging projection in which a metal rod is passed through the center of the engaging recess having a slope having a slope on one side attached to the back surface of the footrest, and a projection that engages with the engagement recess having the slope is formed. When the concave part where the metal bar is fitted is provided at the position of the convex part where the metal bar of the part abuts, when the engaging concave part and the engaging convex part are fitted, the fixtures of the footrest do not slide together In addition, the recess was further fitted to the metal rod. Engagement recesses that form recesses with slopes when the left and right footrests are lowered, and engagement projections that form slopes with slopes fit together, and metal attached to the center of the engagement recesses A concave portion formed at a position where the bar and the metal rod of the engaging convex portion contact each other is fitted to firmly fix the footrest from below.

  Another feature of the present invention is a wheelchair in which the footrest fixture according to claim 1 or 2 is attached.

  In the case where the engaging recess having an inclined surface at the end or the fixing device for the footrest of the present invention provided with the engaging convex portion having the inclined surface is respectively attached to the back surface of the footrest, and the footrest is lowered and used, the inclined surface is provided. The engaging concave portion and the engaging convex portion having the inclined surface can be smoothly fitted to firmly support the footrest.

  By mounting the footrest fixing device of the present invention on the back surface of the footrest, when the footrest is rotated and placed on the foot, the footrest does not fall down even if the footrest is placed on the footrest. Can hold the legs of the occupant. In addition, the wheelchair frame can be used for a long period of time by preventing distortion and deformation of the wheelchair frame.

  In addition, the engaging recess and the engaging projection are fitted by passing a metal rod through the center of the engaging recess having the slope and providing the recess at a position where the metal rod of the engaging projection having the slope contacts. At this time, the metal rod and the concave portion provided in the engaging convex portion are fitted to each other so that the fitted engaging convex portion and the engaging concave portion do not slip sideways.

  The footrest fixture of the present invention will be described in detail below with reference to the drawings, but the present invention is not limited to the following examples.

  FIG. 1 shows a perspective view of a wheelchair 10. The wheelchair 10 has a front frame 12 having a rotatable caster 11 at a lower end portion, a rear frame 14 having a backrest frame 13 mounted thereon, and an upper frame and a seat portion 15 mounted therebetween. A lower frame 18 on which a folding cross bar 17 is pivotally mounted is attached. A main wheel 19 is pivotally mounted between the upper frame 16 and the lower frame 18. The footrest 20 according to the present invention is attached to the lower end portion of the front auxiliary frame 21 of the wheelchair so as to be freely opened and closed. The footrest 20 is pivotally attached to the front auxiliary frame 21 of the wheelchair 20 so that one end of the footrest 20 can be opened and closed. When a user of the wheelchair 10 gets on and off, the left and right footrests 20 are opened and got on and off. While sitting on the wheelchair 20, the feet are placed on the parallel state with the left and right footrests 20 closed. However, the left and right footrests 20 are only pivoted at one end, and the central portion is a free end to open and close the footrest. Therefore, there is a sense of instability when a foot is placed in the center, and it is a cause of looseness when a wheelchair is used for a long time.

  As shown in FIG. 2, the engaging recess having a slope constituting the footrest fixture 100 of the present invention is an engagement recess 22 having a slope formed on one side of the recess. (2-1) in FIG. 2 is a front view of the engaging recess 22, and a hole 24 for mounting a metal rod is formed in the center. (2-2) in FIG. 2 is a top view of the engaging recess 22, and (2-3) in FIG. 2 is a side view of the engaging recess 22. A recess 23 having an inclined surface is formed on one side of the engagement recess 22, and a hole of a footrest support member mounting 28 for inserting a footrest support member is provided on the opposite side of the recess when being attached to the back surface of the footrest. Has been.

  FIG. 3 shows the engagement convex part 25 in which the convex part 26 which has a slope on one side which comprises the footrest fixing tool of this invention was formed. (3-1) of FIG. 3 is a front view of the engaging convex portion 25. FIG. A concave portion 27 in the middle of the engaging convex portion 25 is a concave portion 27 with which a metal rod attached to the engaging concave portion 22 abuts. 3 is a top view of the engaging convex portion 25, and (3-3) in FIG. 3 is a side view of the engaging convex portion 25. FIG. A convex portion 26 having a slope that engages with a slope on one side of the engaging recess is formed, and a hole 28 for a footrest support member into which the footrest support member is inserted when being attached to the footrest is formed on the other side. ing.

  FIG. 4 shows a perspective view of the engagement recess 22 and the engagement projection 25 constituting the footrest fixing tool 100 of the present invention, and a perspective view in which the engagement recess 22 and the engagement projection 25 are fitted. 4 (4-1) is a perspective view from the front of the engaging concave portion 22, and (4-2) in FIG. 4 is a perspective view from the front of the engaging convex portion 25. FIG. (4-3) in FIG. 4 and (4-4) in FIG. 4 are perspective views showing a state before the engaging concave portion 22 and the engaging convex portion 25 are fitted. (4-5) of FIG. 4 is a perspective view showing a state in which the engaging concave portion 22 and the engaging convex portion 25 constituting the footrest fixture 100 of the present invention are fitted. By attaching a slope to one side of the engagement recess 22 and attaching a slope to the engagement projection 25 so as to engage along the slope, the engagement between the recess and the projection becomes smooth. , The engagement can be further strengthened.

  Although the shape of the footrest fixing tool 100 of the present invention is round, it is not particularly limited to a round shape, and may be any shape as long as it can withstand a footrest placed on the footrest. The material of the footrest fixture 100 may be any material as long as it has strength to support the footrest from below, and may be made of synthetic resin or metal, and the material is not particularly limited.

  FIG. 5 shows a state in which the footrest fixture 100 of the present invention is attached to the back surfaces of the left and right footrests 20 via the footrest support members 29, and the engaging concave portions and the engaging convex portions are fitted. In FIG. 5, one set of footrest fixing devices 100 is attached to the back surfaces of the left and right footrests 20 via the footrest support members 29, but two sets may be attached to the front and back surfaces of the footrests.

  By attaching the footrest fixing device of the present invention to the back surface of the footrest, the footrest does not drop even if the footrest is rotated and the footrest is put on the footrest, and the footrest of the occupant is stably held. I can do it. In addition, the wheelchair frame is prevented from being distorted and deformed, and the wheelchair can be used for a long time.

FIG. 1 is a perspective view of a wheelchair. FIG. 2 is a side view of the engaging recess in which a recess having a slope is formed. FIG. 3 is a side view of the engaging convex portion having a convex portion having a slope. FIG. 4 is a perspective view of the engaging concave portion and the engaging convex portion, and a perspective view in which the engaging concave portion and the engaging convex portion are fitted. FIG. 5 is a perspective view of the footrest with the footrest fixture of the present invention attached thereto.

Explanation of symbols

100: Footrest fixture 10: Wheelchair 11: Caster 12: Front frame 13: Back frame 14: Rear frame 15: Seat 16: Upper frame 17: Cross bar 18: Lower frame 19: Main wheel 20: Footrest 21: Front auxiliary frame 22: engagement recess 23: recess 24 having a slope 24: hole for metal rod 25: engagement projection 26: projection 27 having a slope 27: recess 28 where the metal rod contacts 28: mounting a footrest support member Hole 29: Footrest support member

Claims (3)

A fixing device for a footrest to be attached to the back surface of a footrest arranged side by side on the left and right of a front part of a wheelchair, wherein an engaging recess having a slope formed on one side of the recess and a recess having a slope formed on the one side The rear surface of the footrest includes at least one left and right footrest that can be engaged with the engaging concave portion and the engaging convex portion via a rod-like body, respectively. When the footrest is used, the engagement recess and the engagement projection of the fixture of the footrest installed on the back of the left and right footrests are engaged to connect and fix the left and right footrests. A footrest fixture comprising: an engaging concave portion having a concave portion having a slope on one side; and an engaging convex portion having a convex portion having a slope engaging with the engaging concave portion having a slope on the one side. A fixing device for a footrest to be attached to the back surface of a footrest arranged side by side on the left and right of a front part of a wheelchair, wherein an engaging recess having a slope formed on one side of the recess and a recess having a slope formed on the one side A convex portion having a convex portion that has a slope that engages, and a metal rod is passed through the central portion of the concave portion that has the slope formed in the engagement concave portion, and the convex portion having the slope of the engagement convex portion. When a concave part for fitting the metal bar is provided at a position where the metallic bar of the part abuts, and when the engaging concave part and the engaging convex part of the fixture of the footrest are fitted, in addition to the engagement between the concave part and the convex part, 2. A slope on one side according to claim 1, wherein a concave portion provided on the engaging convex portion is further fitted to the metal rod of the mating concave portion to prevent the footrest fixture from sliding. An engaging recess having a recess and an inclined surface that engages with an engaging recess having an inclined surface on the one side. Fixture footrest protrusion is made of the engagement projections formed that. A wheelchair comprising the footrest fixture according to any one of claims 1 and 2.

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