JP6013771B2

JP6013771B2 - wheelchair

Info

Publication number: JP6013771B2
Application number: JP2012104217A
Authority: JP
Inventors: 秀明松枝; 淳桑原
Original assignee: 株式会社きさく工房
Priority date: 2012-04-27
Filing date: 2012-04-27
Publication date: 2016-10-25
Anticipated expiration: 2032-04-27
Also published as: JP2013230270A

Description

本発明は折り畳みが可能な車椅子に関する。 The present invention relates to a foldable wheelchair.

身体障害者の姿勢を保持する車椅子が開発されている。
そのような車椅子には、座部及び／又は背もたれ部に、使用者の腰部、体幹部及び／又は頭部等をサポートするための複数のパットが使用者の状態に応じて配設してあり、また座面及び背もたれ面に展設されたシートの張りも使用者の状態に応じて調節するようになっている。 Wheelchairs have been developed that maintain the posture of the disabled.
In such a wheelchair, a plurality of pads for supporting the user's waist, trunk and / or head, etc. are arranged on the seat and / or backrest according to the condition of the user. Further, the tension of the seats extended on the seat surface and the backrest surface is also adjusted according to the user's condition.

かかる車椅子にあっては、座部及び／又は背もたれ部に配設された各パット、座面及び背もたれ面に展設されたシートの状態に影響を及ぼすことなく当該車椅子を折り畳むことが要求されている。 In such a wheelchair, it is required to fold the wheelchair without affecting the state of each pad arranged on the seat and / or the backrest, the seats extended on the seat and the backrest. Yes.

この要求を満たすものとして後記する特許文献１には次のような車椅子が開示されている。 The following wheelchair is disclosed in Patent Document 1 described later as satisfying this requirement.

図２１は特許文献１に開示された車椅子のフレームの一部省略側面図であり、図中、３５０（３５０）は管材を幅方向へ互いに距離を隔てて平行に配置してなる基フレーム部材である。 FIG. 21 is a partially omitted side view of the wheelchair frame disclosed in Patent Document 1, in which 350 (350) is a base frame member in which tubes are arranged in parallel in the width direction at a distance from each other. is there.

基フレーム部材３５０（３５０）の一端部はそれぞれ適宜角度で下方へ屈曲させてあり、この屈曲された基フレーム部材３５０（３５０）の一端には、ひざ形ボルト４５０（４５０）を介して足載せ部４００（４００）を支持する前部フレーム部材３５１（３５１）が回動可能に連結してある。ひざ形ボルト４５０（４５０）には弾性を有するストップ部材４５１（４５１）がそれぞれ設けてあり、該ストップ部材４５１（４５１）によって前部フレーム部材３５１（３５１）が基フレーム部材３５０（３５０）から離隔する方向である前方へ回動しないようになしてある。 One end of the base frame member 350 (350) is bent downward at an appropriate angle, and a foot is placed on one end of the bent base frame member 350 (350) via a knee bolt 450 (450). A front frame member 351 (351) that supports the portion 400 (400) is rotatably connected. The knee-shaped bolt 450 (450) is provided with a stop member 451 (451) having elasticity, and the front frame member 351 (351) is separated from the base frame member 350 (350) by the stop member 451 (451). It is made not to turn to the front which is a direction to do.

一方、基フレーム部材３５０（３５０）の間には、座部を担持する担持用部材３５２，３５２が基フレーム部材３５０（３５０）の長手方向へ互いに距離を隔てて架設してあり、基フレーム部材３５０（３５０）及び担持用部材３５２，３５２によって平面視が短寸梯子状の部材が構成されている。 On the other hand, between the base frame member 350 (350), supporting members 352 and 352 for supporting the seat portion are installed at a distance from each other in the longitudinal direction of the base frame member 350 (350). 350 (350) and the supporting members 352 and 352 form a short ladder-like member in plan view.

基フレーム部材３５０（３５０）の他端部にはそれぞれ、楕円形状のサイドプレート３６０（３６０）及びＬ字状の蝶番ブラケット３７０（３７０）の一端が、それらを貫通するボルト３８０（３８０）によって固着してある。サイドプレート３６０（３６０）の適宜位置には当該サイドプレート３６０（３６０）を貫通する蝶番ピンアパーチャが開設してあり、前記蝶番ブラケット３７０（３７０）には、図２１に示した如く車椅子を展開させたときに前記蝶番ピンアパーチャに連通する蝶番ピンホールが貫通してある。そして、蝶番ピンアパーチャ及び蝶番ピンホール内にこれらを連通するように蝶番ピン３６１（３６１）を着脱可能に嵌入することによって蝶番ブラケット３７０（３７０）を所要の展開姿勢に保持してある。 One end of an elliptical side plate 360 (360) and an L-shaped hinge bracket 370 (370) is fixed to the other end of the base frame member 350 (350) by a bolt 380 (380) passing therethrough. It is. A hinge pin aperture penetrating the side plate 360 (360) is opened at an appropriate position of the side plate 360 (360), and the wheelchair is unfolded on the hinge bracket 370 (370) as shown in FIG. A hinge pinhole that communicates with the hinge pin aperture. The hinge bracket 370 (370) is held in a required deployed posture by detachably fitting the hinge pin 361 (361) so as to communicate with the hinge pin aperture and the hinge pin hole.

蝶番ブラケット３７０（３７０）の他端には直管状の底部フレーム部材３９０（３９０）の一端が回動自在に連結してあり、該底部フレーム部材３９０（３９０）の他端は、前述した前部フレーム部材３５１（３５１）にその一側を固定し、他側が前記基フレーム部材３５０の他側部へ延設してなり、キャスタ７００（７００）の支持軸７１０（７０１）を当該支持軸７１０（７１０）の中心軸周りに回動自在に保持する担持用部材３５２（３５２）の上縁部に回動自在に連結してある。 One end of a straight tubular bottom frame member 390 (390) is rotatably connected to the other end of the hinge bracket 370 (370), and the other end of the bottom frame member 390 (390) is the front portion described above. One side is fixed to the frame member 351 (351), the other side is extended to the other side of the base frame member 350, and the support shaft 710 (701) of the caster 700 (700) is connected to the support shaft 710 ( 710) is rotatably connected to the upper edge portion of the holding member 352 (352) that is rotatably held around the central axis.

一方、前述した基フレーム部材３５０の他端側にはＵ字状の背もたれフレーム部材４６０が配してあり、該背もたれフレーム部材４６０はその底部から適宜距離を隔てた位置で、前記サイドプレート３６０（３６０）及び背もたれフレーム部材４６０の両側部を貫通するピボットボルト３７２（３７２）によって、回動可能にサイドプレート３６０（３６０）に取り付けられている。背もたれフレーム部材４６０の両側部であって前記ピボットボルト３７２（３７２）を貫通させた位置より少し底部側の位置には、背もたれフレーム部材４６０を貫通する背もたれピンアパーチャが開設してあり、前記サイドプレート３６０（３６０）には、図２１に示した如く車椅子を展開させたときに前記背もたれピンアパーチャに連通するホールが貫通してある。そして、背もたれピンアパーチャ及びホール内にこれらを連通するように背もたれピン３７３（３７３）を着脱可能に嵌入することによって背もたれフレーム部材４６０を所要の展開姿勢に保持してある。 On the other hand, a U-shaped back frame member 460 is disposed on the other end side of the base frame member 350 described above, and the back frame member 460 is positioned at an appropriate distance from the bottom of the side plate 360 ( 360) and a pivot bolt 372 (372) penetrating both sides of the back frame member 460, and is pivotally attached to the side plate 360 (360). A back pin aperture that penetrates the back frame member 460 is provided on both sides of the back frame member 460 and at a position slightly below the position where the pivot bolt 372 (372) penetrates, and the side plate 360 (360) has a hole therethrough that communicates with the backrest pin aperture when the wheelchair is deployed as shown in FIG. The backrest frame member 460 is held in a required unfolded posture by removably inserting the backrest pin 373 (373) so as to communicate with the backrest pin aperture and the hole.

また、前述した蝶番ブラケット３７０（３７０）には車軸調整プレート４７０（４７０）が垂下してあり、該車軸調整プレート４７０（４７０）に固定された車軸クランプ４８０，４８０（４８０，４８０）によって主輪８００（８００）の車軸が回転自在に支持されている。 Further, an axle adjusting plate 470 (470) is suspended from the hinge bracket 370 (370) described above, and the main wheel is set by the axle clamps 480 and 480 (480 and 480) fixed to the axle adjusting plate 470 (470). 800 (800) axles are rotatably supported.

このような車椅子にあっては、前述した蝶番ピンアパーチャ及び蝶番ピンホールに嵌入させた蝶番ピン３６１（３６１）を抜き出した後、図２１中に矢印で示した如く、ひざ形ボルト４５０（４５０）を介して前部フレーム部材３５１（３５１）を内側へ、前部フレーム部材３５１（３５１）と基フレーム部材３５０（３５０）とが略平行になるまで折り畳み、また、前述した背もたれピンアパーチャ及びホールに嵌入させた背もたれピン３７３（３７３）を抜き出した後、背もたれフレーム部材４６０をピボットボルト３７２（３７２）周りに内側へ回動させて、背もたれフレーム部材４６０と基フレーム部材３５０（３５０）とが略平行になるまで折り畳むことによって、当該車椅子を収納する。 In such a wheelchair, after the hinge pin 361 (361) fitted in the hinge pin aperture and the hinge pin hole described above is extracted, as shown by the arrow in FIG. 21, the knee-shaped bolt 450 (450) Fold the front frame member 351 (351) inwardly until the front frame member 351 (351) and the base frame member 350 (350) are substantially parallel to each other, and to the backrest pin aperture and hole described above. After the inserted backrest pin 373 (373) is extracted, the backrest frame member 460 is rotated inwardly around the pivot bolt 372 (372), and the backrest frame member 460 and the base frame member 350 (350) are substantially parallel. The wheelchair is stored by folding until it becomes.

特表平１０−５０９６０８号公報Japanese National Patent Publication No. 10-509608

しかしながら、このような従来の車椅子にあっては、キャスタ７００（７００）に与えられる衝撃が、ひざ形ボルト４５０（４５０）、担持用部材３５２（３５２）と底部フレーム部材３９０（３９０）との連結部、及び底部フレーム部材３９０（３９０）と蝶番ブラケット３７０（３７０）との連結部等に直接的に印加されるため、これらの可動部にガタが発生し易い。かかるガタが発生すると、前部フレーム部材３５１（３５１）が車椅子の前方へ回動することによって、キャスタ角がプラスになり、車椅子の直進性が低下する虞があった。逆に、キャスタ７００（７００）に与えられる衝撃によって、ひざ形ボルト４５０（４５０）に前述した折り畳み方向への負荷が印加されるため、前記ガタと相まって前部フレーム部材３５１（３５１）が折り畳み方向へ回動して、使用者が前のめりになってしまうという危険性もあった。 However, in such a conventional wheelchair, the impact applied to the caster 700 (700) is the connection between the knee bolt 450 (450), the supporting member 352 (352) and the bottom frame member 390 (390). And the bottom frame member 390 (390) and the connecting portion between the hinge bracket 370 (370) and the like are directly applied to the movable portion, so that the movable portion is likely to be loose. When such backlash occurs, the front frame member 351 (351) rotates forward of the wheelchair, so that the caster angle becomes positive and the straightness of the wheelchair may be reduced. Conversely, the load applied to the knee bolts 450 (450) in the folding direction is applied to the knee bolts 450 (450) by an impact applied to the casters 700 (700), and thus the front frame member 351 (351) is folded in the folding direction. There was also a risk that the user would turn forward and turn forward.

一方、基フレーム部材３５０（３５０）の他端部と蝶番ブラケット３７０（３７０）の一端とを連結するボルト３８０（３８０）には、使用者の殆どの荷重と主輪８００（８００）及びキャスタ７００（７００）に与えられる衝撃とが印加され続けるため疲労が生じ易く、車椅子の耐久性が低いという問題もあった。 On the other hand, the bolt 380 (380) that connects the other end of the base frame member 350 (350) and one end of the hinge bracket 370 (370) has most of the load of the user, the main wheel 800 (800), and the caster 700. Since the impact applied to (700) continues to be applied, there is also a problem that fatigue tends to occur and the durability of the wheelchair is low.

本発明は斯かる事情に鑑みてなされたものであって、荷重及び衝撃が与えられても直進性及び耐久性が高く、また安全性も高い車椅子を提供する。 The present invention has been made in view of such circumstances, and provides a wheelchair having high straightness and durability even when a load and an impact are applied, and high safety.

（１）本発明に係る車椅子は、着座する使用者を担持する座部用フレーム部材（４）と、該座部用フレーム部材（４）の両側にそれぞれ配され、長尺のフレーム部材（５１，５２）にて構成された一対の側部支持手段（５）と、前輪たるキャスタ（７）と、後輪たる主輪（８）とを備え、両側部支持手段（５）の長手方向の中途位置にて前記座部用フレーム部材（４）を支持してあり、移動可能になした車椅子において、車椅子の幅方向へ適距離を隔てて配した一対の縦フレーム部材（３１）と、車椅子の幅方向と平行をなし、両縦フレーム部材（３１）の間を連結する一又は複数の横フレーム部材（３２）とを具備するシャシ（３）を備え、該シャシ（３）の縦フレーム部材（３１）の両端部に前記キャスタ（７）及び主輪（８）が回転自在に取り付けてあり、前記座部用フレーム部材（４）は、前記両側部支持手段（５）にそれぞれ対向して、両側部支持手段（５）の長手方向と交わる方向へ延設されたフレーム部分を有しており、両フレーム部分の長手方向の中途位置で前記両側部支持手段（５）に取り付けてあり、両側部支持手段（５）の座部用フレーム部材（４）を支持する位置からシャシ（３）に連結される位置までの部分である脚部（５２）はそれぞれ、前記シャシ（３）側の第１部材（５２１）と、前記座部用フレーム部材（４）側の第２部材（５２２）とを具備しており、両第１部材（５２１）の一端側それぞれは、前記シャシ（３）のキャスタ（７）側の端近傍の位置に、前記横フレーム部材（３２）と平行をなす軸周りに回動可能に連結させてあり、前記シャシ（３）の縦フレーム部材（３１）又は横フレーム部材（３２）であって、前記両第１部材（５２１）の一端側が連結された位置より主輪（８）側の部分の位置と、両第２部材（５２２）の長手方向の中途位置との間、又は前記座部用フレーム部材（４）であって両側部支持手段（５）に取り付けられた位置より車椅子の主輪（８）側の部分の位置との間にはそれぞれ、両側部支持手段（５）に印加される荷重を受けるための突っ張り用フレーム部材（６）が、その両端部が前記横フレーム部材（３２）と平行をなす軸周りに回動可能に架設してあり、対をなす第１部材（５２１）と第２部材（５２２）との互いに対向する端部間にはそれぞれ、第２部材（５２２）を前記横フレーム部材（３２）と平行をなす軸周りにシャシ（３）側へ屈折可能になした屈折手段（９）が介装してあり、両屈折手段（９）にて、両第１部材（５２１）及び両第２部材（５２２）を前記横フレーム部材（３２）と平行をなす軸周りに回動させる際に、両第１部材（５２１）をそのシャシ（３）に回動可能に連結された一端側を軸に、両第１部材（５２１）の他端側が車椅子の主輪（８）側とは反対側へ回動させ、また、両第１部材（５２１）と両第２部材（５２２）とが互いに近づくとともに、両第２部材（５２２）が前記縦フレーム部材（３１）側へ倒れるように、折り畳み可能に構成してあることを特徴とする。 (1) A wheelchair according to the present invention is arranged on both sides of a seat frame member (4) for carrying a seated user and the seat frame member (4). , 52), a pair of side support means (5), a front wheel caster (7), and a rear wheel main wheel (8). In a wheelchair that supports the seat frame member (4) at a midway position and is movable, a pair of vertical frame members (31) arranged at an appropriate distance in the width direction of the wheelchair, and the wheelchair The chassis (3) includes one or a plurality of horizontal frame members (32) that are parallel to the width direction of the frame and connect between the vertical frame members (31), and the vertical frame member of the chassis (3). The casters (7) and the main wheel (8) are rotated at both ends of (31). Yes attached to, the frame members for the seat portion (4) is opposed to each of the side portions supporting means (5), extending in the longitudinal direction and intersecting direction frame portion of the side portions supporting means (5) And is attached to the both side support means (5) at a midway position in the longitudinal direction of both frame portions, and from the position for supporting the seat frame member (4) of the both side support means (5). The legs (52), which are the portions up to the position connected to the chassis (3), are respectively a first member (521) on the chassis (3) side and a second member on the seat frame member (4) side. Each of the first members (521) is located at a position near the end of the chassis (3) on the caster (7) side and the horizontal frame member (32). It is connected so as to be rotatable around a parallel axis, and A sheet vertical frame members (3) (31) or the transverse frame members (32), the position of the one end side main wheel than a linked position is (8) side portions of both the first member (521), between the longitudinal middle position of the two second members (522), or a frame member for the seat (4) is a by both side portions supporting means (5) Roll the main wheel from mounted position (8) Between the positions of the side portions, a tension frame member (6) for receiving a load applied to both side support means (5) is provided, and both end portions thereof are parallel to the horizontal frame member (32). Yes and bridged rotatably around an axis forming a respective pair and the first member (521) forming a is between opposite ends of the second member (522), said second member (522) Refracted toward chassis (3) around axis parallel to horizontal frame member (32) The refracting means (9) made possible is interposed, and in both the refracting means (9) , the first member (521) and the second member (522) are parallel to the horizontal frame member (32). When the first member (521) is pivotally connected to the chassis (3), the other end of the first member (521) is on the wheelchair. And the first member (521) and the second member (522) come closer to each other, and the second member (522) is moved to the vertical frame. It is configured to be foldable so as to fall down to the member (31) side .

本発明の車椅子にあっては、着座する使用者を担持する座部用フレーム部材（４）と、該座部用フレーム部材（４）の両側にそれぞれ配され、長尺のフレーム部材（５１，５２）にて構成された一対の側部支持手段（５）と、前輪たるキャスタ（７）と、後輪たる主輪（８）とを備えており、これらキャスタ及び主輪はシャシに支持されている。また、両側部支持手段（５）の長手方向の中途位置にて前記座部用フレーム部材（４）を支持してある。この前記座部用フレーム部材（４）は、前記両側部支持手段（５）にそれぞれ対向して、両側部支持手段（５）の長手方向と交わる方向へ延設されたフレーム部分を有しており、両フレーム部分の長手方向の中途位置で前記両側部支持手段（５）に取り付けてある。 In the wheelchair of the present invention, the seat frame member (4) for carrying the seated user, and the frame member (51, elongate) arranged on both sides of the seat frame member (4), respectively. 52), a pair of side support means (5), a caster (7) as a front wheel, and a main wheel (8) as a rear wheel, and these casters and the main wheel are supported by a chassis. ing. The seat frame member (4) is supported at a midway position in the longitudinal direction of the both side support means (5). The seat frame member (4) includes a frame portion that faces the both side support means (5) and extends in a direction crossing the longitudinal direction of the both side support means (5). And is attached to the both-side support means (5) at a midway position in the longitudinal direction of both frame portions.

シャシは、車椅子の幅方向へ適距離を隔てて配した一対の縦フレーム部材の間を、車椅子の幅方向と平行をなす一又は複数の横フレーム部材で連結して構成してあり、短寸梯子状の部材を横臥させた様態をなしている。このシャシの縦フレーム部材の両端部にキャスタ及び主輪が回転自在に取り付けてあり、これによってシャシが移動可能になっている。 The chassis is constructed by connecting a pair of vertical frame members arranged at an appropriate distance in the width direction of the wheelchair with one or more horizontal frame members parallel to the width direction of the wheelchair. A ladder-like member is laid down. Casters and main wheels are rotatably attached to both ends of the vertical frame member of the chassis, so that the chassis can be moved.

両側部支持手段（５）の座部用フレーム部材（４）を支持する位置からシャシ（３）に連結される位置までの部分である脚部（５２）はそれぞれ、前記シャシ（３）側の第１部材（５２１）と、前記座部用フレーム部材（４）側の第２部材（５２２）とを具備しており、両第１部材（５２１）の一端側は、前記シャシ（３）のキャスタ（７）側の端近傍の位置に、前記横フレーム部材（３２）と平行をなす軸周りに回動可能に連結させてある。また、シャシ（３）の縦フレーム部材（３１）又は横フレーム部材（３２）であって、前記両第１部材（５２１）の一端側が連結された位置より主輪（８）側の部分の位置と、両第２部材（５２２）の長手方向の中途位置との間、又は前記座部用フレーム部材（４）であって両側部支持手段（５）に取り付けられた位置より車椅子の主輪（８）側の部分の位置との間にはそれぞれ、両側部支持手段（５）に印加される荷重を受けるための突っ張り用フレーム部材（６）が、その両端部が前記横フレーム部材（３２）と平行をなす軸周りに回動可能に架設してあり、両脚部及び突っ張り用フレーム部材によって、座部用フレーム部材及び両側部支持手段に印加される荷重を受けている。 The leg portions (52), which are portions from the position for supporting the seat frame member (4) of the both-side support means (5) to the position connected to the chassis (3), are respectively located on the chassis (3) side. A first member (521) and a second member (522) on the seat frame member (4) side are provided, and one end side of both the first members (521) is provided on the chassis (3). It is connected to a position near the end on the caster (7) side so as to be rotatable around an axis parallel to the horizontal frame member (32) . The vertical a frame member (31) or the transverse frame members (32), the position of the one end side main wheel than a linked position is (8) side portions of both the first member (521) of the chassis (3) When the longitudinal direction between the intermediate position, or the seat portion frame member (4) is a by both side portions supporting means (5) Roll the main wheel from mounted position on the two second members (522) ( 8) Between the positions of the portions on the side, the tension frame member (6) for receiving the load applied to the both side support means (5) is provided, and both end portions thereof are the horizontal frame members (32). It is constructed so as to be rotatable around an axis parallel to the frame, and receives a load applied to the seat frame member and the side support means by both leg portions and the stretching frame member.

そして、前記第１部材（５２１）と第２部材（５２２）との互いに対向する端部間にはそれぞれ、第２部材（５２２）を前記横フレーム部材（３２）と平行をなす軸周りにシャシ（３）側へ屈折可能になした屈折手段（９）が介装してあり、両屈折手段（９）にて、両第１部材（５２１）及び両第２部材（５２２）を前記横フレーム部材（３２）と平行をなす軸周りに回動させる際に、両第１部材（５２１）をそのシャシ（３）に回動可能に連結された一端側を軸に、両第１部材（５２１）の他端側が車椅子の主輪（８）側とは反対側へ回動させ、また、両第１部材（５２１）と両第２部材（５２２）とが互いに近づくとともに、両第２部材（５２２）が前記縦フレーム部材（３１）側へ倒れるように、折り畳み可能に構成してある。 Between the ends of the first member (521) and the second member (522) facing each other , the second member (522) is placed around the axis parallel to the horizontal frame member (32). (3) A refracting means (9) which can be refracted to the side is interposed , and both the first member (521) and both the second members (522) are connected to the horizontal frame by both the refracting means (9). When rotating around an axis parallel to the member (32), both first members (521) are centered on one end side rotatably connected to the chassis (3). ) Is rotated to the side opposite to the main wheel (8) side of the wheelchair, and both the first member (521) and the two second members (522) approach each other, and both the second members ( 522) is configured to be foldable so as to fall down toward the vertical frame member (31) .

このような車椅子にあっては、前記屈折手段で両脚部の第１部材（５２１）と第２部材（５２２）とを屈折させることによって、両側部支持手段がシャシと対向するように折り畳まれるのに伴って、両脚部の第１部材（５２１）がシャシの幅方向と平行をなす軸周りにシャシから離隔する方向へ回動すると共に、突っ張り用フレーム部材の両端連結部がそれぞれシャシの幅方向と平行をなす軸周りに回動しつつ傾頭して、座部用フレームがシャシに接近するように折り畳まれる。つまり、両第１部材（５２１）及び両第２部材（５２２）を前記横フレーム部材（３２）と平行をなす軸周りに回動させる際に、両第１部材（５２１）をそのシャシ（３）に回動可能に連結された一端側を軸に、両第１部材（５２１）の他端側が車椅子の主輪（８）側とは反対側へ回動させ、また、両第１部材（５２１）と両第２部材（５２２）とが互いに近づくとともに、両第２部材（５２２）が前記縦フレーム部材（３１）側へ倒れるように折り畳まれる。これによって、車椅子をワンタッチでコンパクトに折り畳むことができる。 In such a wheelchair, the first member (521) and the second member (522) of both legs are refracted by the refracting means, so that both side support means are folded so as to face the chassis. Accordingly, the first members (521) of both legs rotate about the axis parallel to the width direction of the chassis in a direction away from the chassis, and both end connecting portions of the strut frame members are respectively in the width direction of the chassis. The seat frame is folded so as to approach the chassis while tilting while turning around an axis parallel to the chassis. That is, when the first members (521) and the second members (522) are rotated about an axis parallel to the horizontal frame member (32), the first members (521) are moved to the chassis (3). ), The other end of both first members (521) is rotated to the opposite side to the wheel (8) side of the wheelchair, and both first members ( 521) and both the second members (522) are close to each other, and both the second members (522) are folded so as to fall toward the vertical frame member (31). As a result, the wheelchair can be folded compactly with one touch.

このとき、両脚部の中途位置に配設された屈折手段（９）を支点にして折り畳む構成になしてあるため、折り畳み動作中に座部用フレーム部材に取り付けられるシート等に何らの影響も及ぼさない。 At this time, since the refracting means (9) disposed in the middle position of both legs is folded, the seat mounted on the seat frame member during the folding operation is not affected. Absent.

一方、前述したようにキャスタ及び主輪はシャシに取り付けてあるため、キャスタ及び主輪に荷重及び衝撃が与えられても耐久性が高く、従って直進性に影響が及ぼされない。また、両脚部はシャシに立設してあるため、キャスタ及び主輪に衝撃が与えられた場合であっても、当該衝撃はシャシに伝えられて、両脚部に屈折する方向の力として殆ど作用しない。従って、走行中の衝撃によって両脚部が屈折することが回避され安全性も高い。 On the other hand, as described above, since the caster and the main wheel are attached to the chassis, even when a load and an impact are applied to the caster and the main wheel, the caster and the main wheel have high durability, and therefore, the straight running performance is not affected. In addition, since both legs stand upright on the chassis, even when an impact is applied to the casters and the main wheel, the impact is transmitted to the chassis and almost acts as a force in a direction in which the legs are refracted. do not do. Therefore, both legs are prevented from being refracted by an impact during traveling, and safety is high.

本発明に係る車椅子は、両脚部はそれぞれ、前記シャシ側の第１部材と、前記座部用フレーム部材側の第２部材とを具備しており、対をなす第１部材と第２部材との間にはそれぞれ、第２部材をシャシ側へ屈折可能になした屈折手段が介装してあることを特徴とする。 In the wheelchair according to the present invention, each of the leg portions includes a first member on the chassis side and a second member on the frame member side for the seat portion, and the first member and the second member forming a pair, Between the two, a refracting means that can refract the second member toward the chassis is interposed.

ここで、前述したように両脚部（５２）はそれぞれ、シャシ（３）側の第１部材（５２１）と、座部用フレーム部材（４）側の第２部材（５２２）とを具備している。そして、対をなす第１部材（５２１）と第２部材（５２２）であって、互いに対応する端部間にはそれぞれ屈折手段（９）が介装してあり、該屈折手段（９）は第２部材（５２２）をシャシ（３）側へ屈折させるようになっている。これによって、車椅子の折り畳み操作及び展開操作を誤りなくスムーズに行うことができる。 Here, as described above, each of the legs (52) includes the first member (521) on the chassis (3) side and the second member (522) on the seat frame member (4) side. Yes. The pair of first member (521) and second member (522) is provided with a refraction means (9) between the corresponding end portions , and the refraction means (9) The second member (522) is refracted toward the chassis (3) . Thereby, the folding operation and the unfolding operation of the wheelchair can be performed smoothly without error.

（２）本発明に係る車椅子は、前記屈折手段（９）は、第１部材（５２１）又は第２部材（５２２）であって、互いに対向する端部に設けてあり、第２部材（５２２）又は第１部材（５２１）の互いに対向する端部周面が当接して第２部材（５２２）がシャシ（３）とは反対側へ屈折することを禁止するホルダ部（９１）と、該ホルダ部（９１）と第２部材（５２２）又は第１部材（５２１）の互いに対向する端部とを前記横フレーム部材（３２）と平行をなす軸周りに回動可能に連結する連結部（９１，９３，９４）と、当該屈折手段（９）の屈折動作を止めるストッパ（９５）とを具備することを特徴とする。 (2) In the wheelchair according to the present invention, the refracting means (9) is the first member (521) or the second member (522) , and is provided at end portions facing each other , and the second member (522) Or a holder portion (91) that prohibits the second member (522) from being refracted to the opposite side of the chassis (3) by contacting the circumferential surfaces of the first member (521) facing each other. A connecting part (a connecting part (91) and a second member (522) or an end of the first member (521) facing each other so as to be rotatable around an axis parallel to the horizontal frame member (32). 91, 93, 94) and a stopper (95) for stopping the refraction operation of the refraction means (9).

本発明の車椅子にあっては、前述した屈折手段は、第１部材の第２部材に対向する端部に設けてあり、第２部材の第１部材に対向する端部周面が当接して第２部材がシャシとは反対側へ屈折することを禁止するホルダ部を具備している。該ホルダ部は第２部材の第１部材に対向する端部に設けて、第１部材の第２部材に対向する端部周面が当接して第２部材がシャシとは反対側へ屈折することを禁止する構成にしてもよい。このホルダ部と第２部材又は第１部材の互いに対抗する端部とは連結部にて、シャシの横フレーム部材と平行をなす軸周りに回動可能に連結してある。更に、屈折手段には、該屈折手段の屈折動作を止めるストッパが設けてある。 In the wheelchair according to the present invention, the above-described refracting means is provided at the end portion of the first member facing the second member, and the end surface of the second member facing the first member abuts. The second member includes a holder portion that prohibits the second member from being refracted to the opposite side of the chassis. The holder portion is provided at the end portion of the second member facing the first member, and the end surface of the first member facing the second member abuts and the second member is refracted to the opposite side of the chassis. You may make it the structure which prohibits. The holder portion and the opposite end portions of the second member or the first member are connected at a connecting portion so as to be rotatable about an axis parallel to the horizontal frame member of the chassis. Further, the refraction means is provided with a stopper for stopping the refraction operation of the refraction means.

かかる屈折手段によって、第２部材がシャシとは反対側へ屈折することが禁止されているため、折り畳んだ車椅子を展開する場合、所要の展開状態を超えて展開することが禁止される。従って、車椅子を展開する際もワンタッチでこれを実施することができる。また、屈折手段が比較的簡単な構成であるので耐久性が高い一方、部品コストが廉価である。 Since the second member is prohibited from being refracted to the opposite side of the chassis by such a refracting means, when the folded wheelchair is deployed, it is prohibited to deploy beyond the required deployed state. Therefore, this can be carried out with a single touch even when the wheelchair is deployed. Further, since the refracting means has a relatively simple configuration, the durability is high, while the component cost is low.

（３）本発明に係る車椅子は、前記ストッパ（９２，９５）を解除する解除手段を備え、該解除手段はレバー（１０）と、該レバー（１０）と前記ストッパ（９２，９５）との間に架設されたワイヤ（１１）とを具備することを特徴とする。 (3) The wheelchair according to the present invention includes release means for releasing the stopper (92, 95), and the release means includes the lever (10) , the lever (10), and the stopper (92, 95). And a wire (11) laid between them.

本発明の車椅子にあっては、ストッパを解除する解除手段を備えている。かかる解除手段はレバー及び該レバーに連結したワイヤによって構成することができる。このような解除手段によって、ストッパを遠隔解除することができるので、車椅子に設けられた押し手部というように、車椅子を操作する第三者が操作し易い位置に解除手段を配設することによって、当該第三者は楽な姿勢で車椅子を折り畳むことができる。 The wheelchair according to the present invention is provided with release means for releasing the stopper. Such release means can be constituted by a lever and a wire connected to the lever. Since the stopper can be remotely released by such releasing means, the releasing means is arranged at a position where a third person operating the wheelchair can easily operate, such as a pusher portion provided in the wheelchair. The third party can fold the wheelchair in an easy posture.

（４）本発明に係る車椅子は、前記屈折手段（９）は、第２部材（５２２）が前記横フレーム部材（３２）と平行をなす軸周りにシャシ（３）側へ屈折可能な回動角度で回動可能な関節継手（１９）を設けて構成してあることを特徴とする。 (4) In the wheelchair according to the present invention, the refracting means (9) is configured such that the second member (522) can be refracted toward the chassis (3) around an axis parallel to the horizontal frame member (32). An articulated joint (19) that can be rotated at an angle is provided.

本発明の車椅子にあっては、前述した屈折手段は、第２部材（５２２）が前記横フレーム部材（３２）と平行をなす軸周りにシャシ（３）側へ屈折可能な回動角度で回動可能な関節継手（１９）を設けて構成してある。かかる関節継手としてはダイヤルロックを適用することができる。これによって、前同様、車椅子をワンタッチでコンパクトに折り畳むことができる。一方、関節継手を操作することによって、適宜のリクライニング姿勢になすことができる。 In the wheelchair according to the present invention, the above-described refracting means rotates at a rotation angle at which the second member (522) can be refracted toward the chassis (3) around an axis parallel to the horizontal frame member (32). A movable joint joint (19) is provided. A dial lock can be applied as such a joint joint. As a result, the wheelchair can be folded compactly with a single touch, as before. On the other hand, an appropriate reclining posture can be achieved by operating the joint joint.

本発明に係る車椅子を示す斜視図である。It is a perspective view which shows the wheelchair which concerns on this invention. 図１に示した車椅子のフレームをキャスタ及び主輪と共に示す正面図である。It is a front view which shows the frame of the wheelchair shown in FIG. 1 with a caster and a main wheel. 図１に示した車椅子のフレームをキャスタ及び主輪と共に示す側面図である。It is a side view which shows the frame of the wheelchair shown in FIG. 1 with a caster and a main wheel. 図１に示した第１脚部フレーム部材、屈折手段及び第２脚部フレーム部材の一部切欠き部分拡大側面図である。FIG. 3 is a partially cutaway enlarged side view of the first leg frame member, the refracting means, and the second leg frame member shown in FIG. 1. 図１に示した第１脚部フレーム部材、屈折手段及び第２脚部フレーム部材の一部切欠き部分拡大側面図である。FIG. 3 is a partially cutaway enlarged side view of the first leg frame member, the refracting means, and the second leg frame member shown in FIG. 1. 本発明に係る車椅子のフレームを折り畳んだ状態を示す側面図である。It is a side view which shows the state which folded the frame of the wheelchair which concerns on this invention. 第２実施形態に係る車椅子のフレームの正面図である。It is a front view of the frame of the wheelchair concerning a 2nd embodiment. 第２実施形態に係る車椅子のフレームの側面図である。It is a side view of the frame of the wheelchair concerning a 2nd embodiment. 第３実施形態に係る車椅子のフレームの側面図である。It is a side view of the frame of the wheelchair concerning a 3rd embodiment. 図９に示した車椅子のフレームをリクライニング姿勢になした状態を示す側面図である。It is a side view which shows the state which made the frame of the wheelchair shown in FIG. 9 into the reclining attitude | position. 図９に示した車椅子のフレームを起立姿勢になした状態を示す側面図である。It is a side view which shows the state which made the frame of the wheelchair shown in FIG. 9 into the standing posture. 図９に示した車椅子のフレームを折り畳んだ状態を示す側面図である。It is a side view which shows the state which folded the frame of the wheelchair shown in FIG. 第４実施形態に係る車椅子のフレームを示す正面図である。It is a front view which shows the frame of the wheelchair which concerns on 4th Embodiment. 第４実施形態に係る車椅子のフレームを示す側面図である。It is a side view which shows the frame of the wheelchair which concerns on 4th Embodiment. 図１３に示した車椅子のフレームをリクライニング姿勢になした状態を示す側面図である。It is a side view which shows the state which made the frame of the wheelchair shown in FIG. 13 into the reclining attitude | position. 図１３に示した車椅子のフレームを折り畳んだ状態を示す側面図である。It is a side view which shows the state which folded the frame of the wheelchair shown in FIG. 本発明に係る第５実施形態の車椅子のフレームを示す正面図である。It is a front view which shows the frame of the wheelchair of 5th Embodiment which concerns on this invention. 本発明に係る第５実施形態の車椅子のフレームを示す側面図である。It is a side view which shows the frame of the wheelchair of 5th Embodiment which concerns on this invention. 図１７に示した車椅子のフレームをリクライニング姿勢になした状態を示す側面図である。It is a side view which shows the state which made the frame of the wheelchair shown in FIG. 17 into the reclining attitude | position. 図１７に示した車椅子のフレームを折り畳んだ状態を示す側面図である。It is a side view which shows the state which folded the frame of the wheelchair shown in FIG. 従来の車椅子のフレームの側面図である。It is a side view of the frame of the conventional wheelchair.

（第１実施形態）
以下、本発明に係る車椅子について図面に基づいて詳述する。
図１は本発明に係る車椅子を示す斜視図であり、図中、２は車椅子の骨格を構成するフレーム、７，７は前輪たるキャスタ、８，８は後輪たる主輪である。また、図２及び図３は図１に示した車椅子のフレーム２をキャスタ７，７及び主輪８，８と共に示す正面図及び側面図である。 (First embodiment)
Hereinafter, the wheelchair concerning the present invention is explained in full detail based on a drawing.
FIG. 1 is a perspective view showing a wheelchair according to the present invention, in which 2 is a frame constituting the skeleton of the wheelchair, 7 and 7 are casters as front wheels, and 8 and 8 are main wheels as rear wheels. 2 and 3 are a front view and a side view showing the wheelchair frame 2 shown in FIG. 1 together with casters 7 and 7 and main wheels 8 and 8, respectively.

フレーム２は、車椅子の幅方向に距離を隔てて平行に配置した一対の縦フレーム部材３１，３１の間に一又は複数（図１〜図３に示した場合にあっては２本）の横フレーム部材３２，３２を縦フレーム部材３１，３１の長手方向へ距離隔てて架設してなるシャシ３を備えている。縦フレーム部材３１，３１は横臥させた管状部材の一端部を、その他の領域より所要寸法だけ隆起させて成形してあり、縦フレーム部材３１，３１の一端には短寸の支持柱７１，７１が鉛直姿勢で連結固定してある。この支持柱７１，７１の下端にキャスタ７，７がそれぞれ、支持柱７１，７１の中心軸周りに回動自在に支持されており、キャスタ７，７の略全ての部分が縦フレーム部材３１，３１の一端側隆起領域内に、縦フレーム部材３１，３１から適宜距離を隔てて位置するように構成してある。 The frame 2 has one or a plurality (two in the case shown in FIGS. 1 to 3) between a pair of vertical frame members 31 and 31 arranged in parallel at a distance in the width direction of the wheelchair. A chassis 3 is provided in which frame members 32, 32 are installed at a distance in the longitudinal direction of the vertical frame members 31, 31. The vertical frame members 31 and 31 are formed by projecting one end portion of a tubular member lying on the side by a required dimension from other regions, and short frame supporting columns 71 and 71 are formed at one end of the vertical frame members 31 and 31. Are connected and fixed in a vertical posture. The casters 7 and 7 are supported at the lower ends of the support columns 71 and 71 so as to be rotatable around the central axes of the support columns 71 and 71, respectively. In the one end side raised region of 31, the vertical frame members 31, 31 are appropriately spaced from each other.

縦フレーム部材３１，３１の他端近傍の位置の外側周面には、前記キャスタ７，７の外径より大きい外径の主輪８，８が回転自在に取り付けてある。縦フレーム部材３１，３１の主輪８，８の近傍には、例えば倒立Ｌ字状の当接部材８２，８２及び該当接部材８２，８２を操作するブレーキレバー８１，８１が配設してあり、該ブレーキレバー８１，８１を操作して前記当接部材８２，８２を主輪８，８に当接させることによって、主輪８，８の回転を禁止するようになっている。 Main wheels 8 and 8 having an outer diameter larger than the outer diameter of the casters 7 and 7 are rotatably attached to the outer peripheral surface at a position near the other end of the vertical frame members 31 and 31. In the vicinity of the main wheels 8, 8 of the vertical frame members 31, 31, for example, inverted L-shaped contact members 82, 82 and brake levers 81, 81 for operating the corresponding contact members 82, 82 are arranged. The rotation of the main wheels 8 and 8 is prohibited by operating the brake levers 81 and 81 to bring the contact members 82 and 82 into contact with the main wheels 8 and 8.

一方、縦フレーム部材３１，３１の一端部の天井部周面には管状の脚部フレーム部材５２，５２の下端が、シャシ３の幅方向である前記横フレーム部材３２と平行をなす軸周りに回動可能に連結してある。脚部フレーム部材５２，５２の上端部にはそれぞれ、対をなす管状の側部フレーム部材５１，５１の下端部が連結固定してある。これら側部フレーム部材５１，５１及び脚部フレーム部材５２，５２にて棒状の側部支持手段５，５が構成されている。 On the other hand, the lower ends of the tubular leg frame members 52, 52 are arranged around the axis parallel to the horizontal frame member 32, which is the width direction of the chassis 3, on the peripheral surface of the ceiling at one end of the vertical frame members 31, 31. It is connected so that it can rotate. The lower end portions of the pair of tubular side frame members 51, 51 are connected and fixed to the upper end portions of the leg frame members 52, 52, respectively. These side frame members 51, 51 and leg frame members 52, 52 constitute bar-shaped side support means 5, 5.

なお、本実施形態では側部支持手段５，５は側部フレーム部材５１，５１及び脚部フレーム部材５２，５２を連結固定させて構成したが、それらを連通させた一のフレーム部材で構成してもよい。その場合、当該側部支持手段において、後述する座部用フレーム部材４とシャシ３との間の部分が脚部となる。一方、前述した如く側部支持手段５，５を側部フレーム部材５１，５１及び脚部フレーム部材５２，５２を連結固定させて形成した場合、脚部フレーム部材５２，５２が前記脚部を構成する。 In the present embodiment, the side support means 5 and 5 are configured by connecting and fixing the side frame members 51 and 51 and the leg frame members 52 and 52. However, the side support means 5 and 5 are configured by one frame member that communicates them. May be. In that case, in the said side part support means, the part between the frame member 4 for seat parts mentioned later and the chassis 3 becomes a leg part. On the other hand, when the side support members 5 and 5 are formed by connecting and fixing the side frame members 51 and 51 and the leg frame members 52 and 52 as described above, the leg frame members 52 and 52 constitute the legs. To do.

一方、両側部フレーム部材５１，５１の上端側の間には、その両端部を内側へ湾曲させてなり使用者の背部を支持する背部用フレーム部材５６及び当該車椅子を操作する第三者の持ち手となる持ち手用フレーム部材５７が、側部フレーム部材５１，５１の低い高さ位置から上方へこの順に架設してある。 On the other hand, between the upper end sides of the both side frame members 51, 51, both ends thereof are bent inward, and the back frame member 56 that supports the back of the user and the third person who operates the wheelchair are possessed. A hand holding frame member 57 is constructed in this order from the low position of the side frame members 51, 51 in this order.

また、両側部フレーム部材５１，５１の下端近傍には、平面視が略コ字状に成形してあり使用者を担持するための座部用フレーム部材４が配置してある。座部用フレーム部材４の両端近傍の外側には該座部用フレーム部材４を側部フレーム部材５１，５１に取り付けるための支持アーム４１，４１が突設してあり、座部用フレーム部材４のコ字状の底部４２を主輪８，８側になした状態で両支持アーム４１，４１を側部フレーム部材５１，５１の下端近傍の内面に固着させることによって、座部用フレーム部材４が側部フレーム部材５１，５１に取り付けられている。この座部用フレーム部材４の底部４２と前記背部用フレーム部材５６との間には、複数の縦バー（図２に示した場合にあっては２本）５８，５８が架設してあり、該縦バー５８，５８によって座部用フレーム部材４はその両端部の高さ位置より底部４２の高さ位置の方が若干低くなるように支持されている。 Also, in the vicinity of the lower ends of the side frame members 51, 51, a seat frame member 4 is arranged in a substantially U shape in plan view and carries a user. Support arms 41, 41 for attaching the seat frame member 4 to the side frame members 51, 51 are provided on the outside in the vicinity of both ends of the seat frame member 4. With the U-shaped bottom portion 42 on the main wheels 8, 8 side, the support arms 41, 41 are fixed to the inner surfaces in the vicinity of the lower ends of the side frame members 51, 51, whereby the seat frame member 4. Are attached to the side frame members 51, 51. Between the bottom 42 of the seat frame member 4 and the back frame member 56, a plurality of vertical bars (two in the case shown in FIG. 2) 58 and 58 are installed. The seat frame member 4 is supported by the vertical bars 58 and 58 so that the height of the bottom 42 is slightly lower than the height of both ends thereof.

この座部用フレーム部材４の両端から適宜距離下方の位置には使用者の足を担持する横長長方形状の足担持板４５が配置してあり、該足担持板４５は座部用フレーム部材４の両端に垂下した連結部材４６，４６の下端に、前記側部フレーム部材５１，５１の幅方向の軸と平行な軸周りに回動可能に取り付けられている。 A horizontally-long rectangular foot support plate 45 for supporting the user's feet is disposed at a position appropriately below the both ends of the seat frame member 4, and the foot support plate 45 is disposed on the seat frame member 4. Are attached to the lower ends of connecting members 46, 46 that hang from both ends of the frame so as to be rotatable about an axis parallel to the axis in the width direction of the side frame members 51, 51.

図１に示したように、座部用フレーム部材４上には使用者に応じた凹部を設けてなる座部シートＳ１が取り付けてある。また、側部フレーム部材５１，５１の上端から座部用フレーム部材４までの領域には背部シートＳ２が所要の撓みを持たせて帳設してあり、背部シートＳ２内の適宜位置に使用者の頭部、体幹部及び腰部を支持するパット（図示せず）がそれぞれ配設してある。 As shown in FIG. 1, a seat portion sheet S <b> 1 is provided on the seat portion frame member 4 and is provided with a recess according to the user. In addition, a back seat S2 is provided with necessary deflection in a region from the upper end of the side frame members 51, 51 to the seat frame member 4, and a user is placed at an appropriate position in the back seat S2. A pad (not shown) for supporting the head, trunk, and waist is provided.

一方、前述した脚部フレーム部材５２，５２の上端近傍の位置には、脚部フレーム部材５２，５２と前記シャシ３の縦フレーム部材３１，３１との間で突っ張って、座部シートＳ１上に着座する使用者の荷重等を受ける管状の突っ張り用フレーム部材６，６の一端が、シャシ３の横フレーム部材３２と平行をなす軸周りに回動可能に連結してあり、両突っ張り用フレーム部材６，６の他端は、縦フレーム部材３１，３１の主輪８，８近傍の天井側周面の位置に、横フレーム部材３２と平行をなす軸周りに回動可能に連結してある。 On the other hand, at the position in the vicinity of the upper ends of the leg frame members 52 and 52 described above, the leg frame members 52 and 52 are stretched between the vertical frame members 31 and 31 of the chassis 3 and placed on the seat seat S1. One end of tubular strut frame members 6, 6 that receives the load of the user who is seated is connected so as to be rotatable about an axis parallel to the lateral frame member 32 of the chassis 3, and both strut frame members The other ends of 6 and 6 are connected to positions on the ceiling side peripheral surface in the vicinity of the main wheels 8 and 8 of the vertical frame members 31 and 31 so as to be rotatable around an axis parallel to the horizontal frame member 32.

ところで、前記脚部フレーム部材５２，５２はその長手方向の中途位置で、シャシ３側の第１脚部フレーム部材５２１，５２１と側部フレーム部材５１，５１側の第２脚部フレーム部材５２２，５２２に分割されている。第１脚部フレーム部材５２１，５２１と第２脚部フレーム部材５２２，５２２とは所定方向へ屈折可能な屈折手段９，９によって相互に連結されており、両第１脚部フレーム部材５２１，５２１の間には脚部連結フレーム部材５５が架設してある。そして、第１脚部フレーム部材５２１，５２１及び第２脚部フレーム部材５２２，５２２は屈折手段９，９によって、シャシ３の横フレーム部材３２と平行をなす軸周りに回動して、車椅子の内側へ折り畳むことができるようになっている。 By the way, the leg frame members 52 and 52 are halfway in the longitudinal direction, and the first leg frame members 521 and 521 on the chassis 3 side and the second leg frame members 522 on the side frame members 51 and 51 side. It is divided into 522. The first leg frame members 521 and 521 and the second leg frame members 522 and 522 are connected to each other by refracting means 9 and 9 that can be refracted in a predetermined direction, and both the first leg frame members 521 and 521 are connected. A leg connecting frame member 55 is installed between the two. Then, the first leg frame members 521 and 521 and the second leg frame members 522 and 522 are rotated around the axis parallel to the horizontal frame member 32 of the chassis 3 by the bending means 9 and 9, It can be folded inward.

図４及び図５は、図１に示した第１脚部フレーム部材５２１、屈折手段９及び第２脚部フレーム部材５２２の一部切欠き部分拡大側面図であり、図４は展開状態、また図５は折り畳んだ状態をそれぞれ示している。なお、図中、図１に示した部分に対応する部分には同じ番号を付してある。 4 and 5 are partially cutaway side views of the first leg frame member 521, the refraction means 9 and the second leg frame member 522 shown in FIG. 1, and FIG. FIG. 5 shows the folded state. In the figure, the same reference numerals are given to the portions corresponding to the portions shown in FIG.

図４に示した如く、屈折手段９は、略半円筒のホルダ部９１に、該ホルダ部９１の中心軸と同軸上に内嵌する円筒状の嵌合部９３を、前記ホルダ部９１の一端側に半円筒開口部を掛け渡すように配設した連結軸９４によって連結して構成してある。嵌合部９３の一端側の外周面であって前記ホルダ部９１の周面に対向する側とは反対側の位置には、前記連結軸９４を挿通させる挿通部９７が突設してあり、該挿通部９７に連結軸９４を挿通させて、ホルダ部９１と嵌合部９３とが連結軸９４周りに回動可能になしてある。これら挿通部９７及び連結軸９４にて連結部が構成されている。 As shown in FIG. 4, the refracting means 9 includes a cylindrical fitting portion 93 that is fitted on the substantially semi-cylindrical holder portion 91 coaxially with the central axis of the holder portion 91. It is configured to be connected by a connecting shaft 94 arranged so as to span a semi-cylindrical opening. An insertion portion 97 through which the connecting shaft 94 is inserted protrudes at a position on the outer peripheral surface on one end side of the fitting portion 93 and opposite to the side facing the peripheral surface of the holder portion 91. The connecting shaft 94 is inserted through the insertion portion 97 so that the holder portion 91 and the fitting portion 93 can rotate around the connecting shaft 94. The insertion portion 97 and the connection shaft 94 constitute a connection portion.

前記嵌合部９３の周面であってホルダ部９１の周面に対向する適宜位置には、プランジャー９５が嵌合部９３から進出及び嵌合部９３内へ後退可能に設けてあり、嵌合部９３の周面であってプランジャー９５とは１８０度異なる位置には、該プランジャー９５を後退操作するための操作レバー９６が設けてある。なお、嵌合部９３内には図示しない弾性部材が設けてあり、該弾性部材によってプランジャー９５には嵌合部９３から進出する方向への力が付勢されている。一方、ホルダ部９１の周面であって、内嵌された嵌合部９３のプランジャー９５に対向する位置には、該プランジャー９５の頭部が嵌合する嵌合孔９２が開設してある。 A plunger 95 is provided at an appropriate position on the peripheral surface of the fitting portion 93 and facing the peripheral surface of the holder portion 91 so that the plunger 95 can be advanced from the fitting portion 93 and retracted into the fitting portion 93. An operation lever 96 for reversing the plunger 95 is provided at a position that is 180 degrees different from the plunger 95 on the peripheral surface of the joint portion 93. Note that an elastic member (not shown) is provided in the fitting portion 93, and a force in a direction in which the plunger 95 advances from the fitting portion 93 is urged by the elastic member. On the other hand, a fitting hole 92 into which the head portion of the plunger 95 is fitted is opened at a position facing the plunger 95 of the fitting portion 93 that is fitted inside the holder portion 91. is there.

前述したホルダ部９１の一端には環状部が設けてあり、該環状部を第１脚部フレーム部材５２１の上端部に内嵌させて、ホルダ部９１が第１脚部フレーム部材５２１に固着してある。また、嵌合部９３の他端側に第２脚部フレーム部材５２２の下端部を外嵌させて、嵌合部９３が第２脚部フレーム部材５２２に固着してある。 An annular portion is provided at one end of the holder portion 91 described above, and the annular portion is fitted into the upper end portion of the first leg frame member 521 so that the holder portion 91 is fixed to the first leg frame member 521. It is. Further, the lower end portion of the second leg portion frame member 522 is externally fitted to the other end side of the fitting portion 93, and the fitting portion 93 is fixed to the second leg portion frame member 522.

図１に示したように車椅子を展開している場合にあっては、ホルダ部９１内に嵌合部９３が、ホルダ部９１の中心軸と同軸上に内嵌して第１脚部フレーム部材５２１及び第２脚部フレーム部材５２２が直線状の姿勢になされると共に、嵌合部９３に設けられたプランジャー９５がホルダ部９１の嵌合孔９２に嵌入して、嵌合部９３が連結軸９４周りに回動することが禁止されている。 In the case where the wheelchair is deployed as shown in FIG. 1, the fitting portion 93 is fitted into the holder portion 91 coaxially with the central axis of the holder portion 91, and the first leg portion frame member. 521 and the second leg frame member 522 are in a linear posture, and the plunger 95 provided in the fitting portion 93 is fitted into the fitting hole 92 of the holder portion 91 so that the fitting portion 93 is connected. It is prohibited to rotate around the axis 94.

このとき、第２脚部フレーム部材５２２に不望の力が印加されても、屈折手段９の嵌合部９３がホルダ部９１の内周面に当接しているため、第２脚部フレーム部材５２２が前記矢符とは反対の方向へ回動することが防止される。 At this time, even if an undesired force is applied to the second leg frame member 522, the fitting part 93 of the refracting means 9 is in contact with the inner peripheral surface of the holder part 91. It is prevented that 522 rotates in the direction opposite to the arrow.

一方、操作レバー９６を操作してプランジャー９５を嵌合部９３内へ後退させた後、第２脚部フレーム部材５２２に所望の力を印加すると、図５中に矢符で示した如く、嵌合部９３が連結軸９４周りにホルダ部９１の半円筒開口部から外方へ回動して、第２脚部フレーム部材５２２は第１脚部フレーム部材５２１と略対向するように折り畳まれる。 On the other hand, when a desired force is applied to the second leg frame member 522 after operating the operating lever 96 to retract the plunger 95 into the fitting portion 93, as indicated by the arrows in FIG. The fitting portion 93 is rotated outward from the semi-cylindrical opening of the holder portion 91 around the connecting shaft 94, and the second leg frame member 522 is folded so as to substantially face the first leg frame member 521. .

このように折り畳まれた状態で、第２脚部フレーム部材５２２に前述とは逆方向への力を与えると、嵌合部９３が連結軸９４周りにホルダ部９１の半円筒開口部の内方へ回動して、ホルダ部９１内に嵌合する。このとき、嵌合部９３に設けられたプランジャー９５には前述した力が付勢されているため、プランジャー９５がホルダ部９１の嵌合孔９２に対向したタイミングで当該プランジャー９５が嵌合孔９２内へ進出して嵌合部９３をホルダ部９１にロックする。 When the second leg frame member 522 is applied with a force in the opposite direction to the above in the folded state, the fitting portion 93 is inward of the semicylindrical opening of the holder portion 91 around the connecting shaft 94. To fit into the holder portion 91. At this time, since the above-described force is applied to the plunger 95 provided in the fitting portion 93, the plunger 95 is fitted at the timing when the plunger 95 faces the fitting hole 92 of the holder portion 91. The fitting portion 93 is locked to the holder portion 91 by moving into the joint hole 92.

なお、本実施形態では第１脚部フレーム部材５２１にホルダ部９１を取付け、第２脚部フレーム部材５２２に嵌合部９３及びプランジャー９５を設けてあるが、第１脚部フレーム部材５２１に嵌合部９３及びプランジャー９５を設け、第２脚部フレーム部材５２２にホルダ部９１を取り付けてもよい。 In this embodiment, the holder portion 91 is attached to the first leg frame member 521, and the fitting portion 93 and the plunger 95 are provided to the second leg frame member 522. The fitting part 93 and the plunger 95 may be provided, and the holder part 91 may be attached to the second leg frame member 522.

このような車椅子にあっては、前述した如く操作レバー９６を操作することによって、第２脚部フレーム部材５２２が第１脚部フレーム部材５２１と対向するように折り畳まれるのに伴って、図６に示したように、第１脚部フレーム部材５２１（５２１）がシャシ３の横フレーム部材３２と平行をなす軸周りにシャシ３から離隔する方向へ回動すると共に、突っ張り用フレーム部材６（６）の両端連結部がそれぞれシャシ３の横フレーム部材３２と平行をなす軸周りに回動しつつ傾頭して、第２脚部フレーム部材５２２（５２２）に連結した側部フレーム部材５１（５１）がシャシ３の縦フレーム部材３１（３１）と略平行をなす姿勢に折り畳まれる。これによって、車椅子をワンタッチでコンパクトに折り畳むことができる。 In such a wheelchair, the second leg frame member 522 is folded so as to face the first leg frame member 521 by operating the operation lever 96 as described above, and FIG. As shown in FIG. 5, the first leg frame member 521 (521) rotates about the axis parallel to the horizontal frame member 32 of the chassis 3 in the direction away from the chassis 3, and the tension frame member 6 (6 The side frame members 51 (51) connected to the second leg frame member 522 (522) are tilted while rotating at both ends connected to the horizontal frame member 32 of the chassis 3 respectively. ) Is folded into a posture substantially parallel to the vertical frame member 31 (31) of the chassis 3. As a result, the wheelchair can be folded compactly with one touch.

このように本発明に係る車椅子は、脚部フレーム部材５２（５２）の中途位置を支点にして前述したように折り畳む構成になしてあるため、折り畳み動作中に座部シートＳ１及び背部シートＳ２（共に図１参照）に何らの影響も及ぼさない。 Thus, the wheelchair according to the present invention is configured to fold as described above with the midway position of the leg frame member 52 (52) as a fulcrum, so that the seat seat S1 and the back seat S2 ( Neither has any effect on (see FIG. 1).

一方、前述したようにキャスタ７（７）及び主輪８（８）はシャシ３に取り付けてあるため、キャスタ７（７）及び主輪８（８）に荷重及び衝撃が与えられても耐久性が高く、従って直進性に影響が及ぼされない。また、前述した脚部フレーム部材５２（５２）はシャシ３に立設してあるため、キャスタ７（７）及び主輪８（８）に衝撃が与えられた場合であっても、当該衝撃はシャシ３に伝えられて、脚部フレーム部材５２（５２）に屈折手段９（９）が開く方向の力として作用しない。従って、走行中の衝撃によって屈折手段９（９）が開くことが回避され安全性も高い。 On the other hand, since the casters 7 (7) and the main wheels 8 (8) are attached to the chassis 3 as described above, the casters 7 (7) and the main wheels 8 (8) are durable even if a load and an impact are applied thereto. Is high and therefore does not affect straightness. Further, since the above-described leg frame member 52 (52) is erected on the chassis 3, even when an impact is applied to the caster 7 (7) and the main wheel 8 (8), the impact is not affected. It is transmitted to the chassis 3 and does not act on the leg frame member 52 (52) as a force in the direction in which the refraction means 9 (9) opens. Therefore, the refraction means 9 (9) is prevented from opening due to an impact during traveling, and safety is high.

なお、本実施形態では障害者用の車椅子に適用した場合について示してあるが、本発明はこれに限らず、健常者の幼児用等、種々の車椅子に適用し得ることはいうまでもない。 In addition, although it has shown about the case where this embodiment applies to the wheelchair for a disabled person, it cannot be overemphasized that this invention can be applied to various wheelchairs for not only this but for healthy infants.

（第２実施形態）
図７及び図８は、第２実施形態に係る車椅子のフレームの正面図及び側面図であり、前述した操作レバー９６を遠隔操作し得るようになしてある。なお、両図中、図１〜図３に示した部分に対応する部分には同じ番号を付してその説明を省略する。 (Second Embodiment)
7 and 8 are a front view and a side view of the frame of the wheelchair according to the second embodiment, and the operation lever 96 described above can be remotely operated. In both figures, parts corresponding to those shown in FIGS. 1 to 3 are denoted by the same reference numerals and description thereof is omitted.

図７及び図８に示したように、突っ張り用フレーム部材６，６の一端はシャシ３の主輪８，８側の横フレーム部材３２に、その長手方向へ適宜距離を隔てて当該横フレーム部材３２周りに回動自在に連結してあり、突っ張り用フレーム部材６，６の他端は座部用フレーム部材４の底部４２に、前記横フレーム部材３２と平行をなす軸周りに回動自在に連結してある。 As shown in FIGS. 7 and 8, one end of each of the frame members 6 and 6 for the stretching is separated from the horizontal frame member 32 on the main wheels 8 and 8 side of the chassis 3 by an appropriate distance in the longitudinal direction thereof. 32, and the other ends of the projecting frame members 6 and 6 are pivotable to the bottom portion 42 of the seat frame member 4 about an axis parallel to the horizontal frame member 32. It is connected.

ところで、前述した持ち手用フレーム部材５７には遠隔レバー１０が取り付けてあり、該遠隔レバー１０にはワイヤ１１，１１の一端が接続してある。ワイヤ１１，１１の他端は前述した操作レバー９６（９６）及び第２脚部フレーム部材５２２（５２２）に係合してあり、ワイヤ１１，１１が遠隔レバー１０側に引かれると、操作レバー９６（９６）をして嵌合部内へプランジャー９５（９５）を後退せしめるようになされ、ワイヤ１１，１１への引張り力が無くなると、嵌合部からプランジャー９５（９５）が進出し得るようになっている。 By the way, the remote lever 10 is attached to the handle frame member 57 described above, and one end of the wires 11, 11 is connected to the remote lever 10. The other ends of the wires 11 and 11 are engaged with the operation lever 96 (96) and the second leg frame member 522 (522) described above, and when the wires 11 and 11 are pulled toward the remote lever 10, the operation lever The plunger 95 (95) is retracted into the fitting portion by performing 96 (96), and the plunger 95 (95) can advance from the fitting portion when the pulling force to the wires 11 and 11 is lost. It is like that.

このような車椅子にあっては、車椅子を操作する第三者が持ち手用フレーム５７の遠隔レバー１０を操作して、操作レバー９６（９６）をして嵌合部内へプランジャー９５（９５）を後退せしめることによって、前同様、第２脚部フレーム部材５２２が第１脚部フレーム部材５２１と対向するように折り畳まれるのに伴って、第１脚部フレーム部材５２１（５２１）がシャシ３の横フレーム部材３２と平行をなす軸周りにシャシ３から離隔する方向へ回動すると共に、突っ張り用フレーム部材６（６）の両端連結部がそれぞれシャシ３の横フレーム部材３２と平行をなす軸周りに回動しつつ傾頭して、第２脚部フレーム部材５２２（５２２）に連結した側部フレーム部材５１（５１）がシャシ３の縦フレーム部材３１（３１）と略平行をなす姿勢に折り畳むことができる。 In such a wheelchair, a third person who operates the wheelchair operates the remote lever 10 of the handle frame 57 to operate the operation lever 96 (96) to move the plunger 95 (95) into the fitting portion. As the second leg frame member 522 is folded so as to face the first leg frame member 521, the first leg frame member 521 (521) of the chassis 3 is retracted. It rotates in a direction away from the chassis 3 around an axis parallel to the horizontal frame member 32, and both ends of the tension frame member 6 (6) are around the axis parallel to the horizontal frame member 32 of the chassis 3. And the side frame member 51 (51) connected to the second leg frame member 522 (522) is substantially parallel to the vertical frame member 31 (31) of the chassis 3. It can be folded to energize.

これによって、前述した効果に加えて、前記第三者は立ち姿勢で車椅子の折り畳み操作を実施することができるため、当該折り畳み操作を楽な姿勢で行うことができる。 Accordingly, in addition to the above-described effects, the third party can perform the folding operation of the wheelchair in a standing posture, and thus the folding operation can be performed in an easy posture.

（第３実施形態）
図９は、第３実施形態に係る車椅子のフレームの側面図であり、前述した第１脚部フレーム部材５２１と第２脚部フレーム部材５２２とを他の屈折手段で連結した場合を示している。なお、図９中、図１〜図３に示した部分に対応する部分には同じ番号を付してその説明を省略する。 (Third embodiment)
FIG. 9 is a side view of a wheelchair frame according to the third embodiment, and shows a case where the first leg frame member 521 and the second leg frame member 522 described above are connected by other refracting means. . 9, parts corresponding to those shown in FIGS. 1 to 3 are denoted by the same reference numerals and description thereof is omitted.

図９に示したように、第１脚部フレーム部材５２１（５２１）と第２脚部フレーム部材５２２（５２２）との間には屈折手段９（９）たるダイヤルロック１９（１９）が介装してあり、該ダイヤルロック１９（１９）によって第２脚部フレーム部材５２２（５２２）がシャシ３の横フレーム部材３２（図１参照）と平行をなす軸周りに回動可能になしてある。 As shown in FIG. 9, a dial lock 19 (19), which is a refraction means 9 (9), is interposed between the first leg frame member 521 (521) and the second leg frame member 522 (522). The dial lock 19 (19) allows the second leg frame member 522 (522) to rotate about an axis parallel to the horizontal frame member 32 (see FIG. 1) of the chassis 3.

ダイヤルロック１９は、内面に複数の凹凸を放射状に設けてなる一対の第１部分及び第２部分を互いに歯合させてなり、クイックレバー２０を操作することによって第１部分及び第２部分の歯合を解除して第１部分及び第２部分を相互に回動させ、また第１部分及び第２部分を歯合させて第１部分及び第２部分を適宜の回動角度で固定することができるようになっている。前記第１部分及び第２部分の一方に第１脚部フレーム部材５２１が固定してあり、第１部分及び第２部分の他方に第２脚部フレーム部材５２２が固定してある。従って、クイックレバー２０を操作することによって、第２脚部フレーム部材５２２（５２２）をシャシ３の横フレーム部材３２と平行をなす軸周りに回動させて、図１０に示した如く、両側部フレーム部材５１（５１）及び座部用フレーム部材４等を主輪８（８）側へ倒したリクライニング姿勢、又は図１１に示した如く、座部用フレーム部材４を略水平になす起立姿勢に変更し得るようになっている。 The dial lock 19 is formed by meshing a pair of first and second portions having a plurality of irregularities radially formed on the inner surface thereof, and operating the quick lever 20 to engage the teeth of the first and second portions. The first part and the second part can be rotated with each other, and the first part and the second part can be engaged with each other to fix the first part and the second part at an appropriate rotation angle. It can be done. A first leg frame member 521 is fixed to one of the first part and the second part, and a second leg frame member 522 is fixed to the other of the first part and the second part. Accordingly, by operating the quick lever 20, the second leg frame member 522 (522) is rotated around an axis parallel to the horizontal frame member 32 of the chassis 3, and as shown in FIG. A reclining posture in which the frame member 51 (51), the seat frame member 4 and the like are tilted toward the main wheel 8 (8), or a standing posture in which the seat frame member 4 is substantially horizontal as shown in FIG. It can be changed.

更にかかる車椅子においては、前述したクイックレバー２０を操作することによって、前述したリクライニング姿勢より更に第２脚部フレーム部材５２２（５２２）をシャシ３の横フレーム部材３２と平行をなす軸周りに回動させて、図１２に示した如く、第１脚部フレーム部材５２１（５２１）がシャシ３の横フレーム部材３２と平行をなす軸周りにシャシ３から離隔する方向へ回動すると共に、突っ張り用フレーム部材６（６）の両端連結部がそれぞれシャシ３の横フレーム部材３２と平行をなす軸周りに回動しつつ傾頭し、第２脚部フレーム部材５２２（５２２）に連結した側部フレーム部材５１（５１）がシャシ３の縦フレーム部材３１（３１）へ可及的に接近する姿勢に折り畳むことができる。 Further, in such a wheelchair, by operating the quick lever 20 described above, the second leg frame member 522 (522) is further rotated around an axis parallel to the horizontal frame member 32 of the chassis 3 from the reclining posture described above. Then, as shown in FIG. 12, the first leg frame member 521 (521) rotates in a direction away from the chassis 3 around an axis parallel to the horizontal frame member 32 of the chassis 3, and the tension frame. The side frame members connected to the second leg frame member 522 (522) are tilted while the both end connecting portions of the member 6 (6) are rotated around an axis parallel to the horizontal frame member 32 of the chassis 3. 51 (51) can be folded into a posture as close as possible to the vertical frame member 31 (31) of the chassis 3.

このような車椅子にあっては、前同様、車椅子をワンタッチでコンパクトに折り畳むことができる一方、脚部フレーム部材５２（５２）の中途位置を支点にして前述したように折り畳む構成になしてあるため、折り畳み動作中に座部シートＳ１及び背部シートＳ２（共に図１参照）に何らの影響も及ぼさない。 In such a wheelchair, the wheelchair can be folded compactly with a single touch as before, but is folded as described above with the midway position of the leg frame member 52 (52) as a fulcrum. During the folding operation, the seat part S1 and the back part sheet S2 (both see FIG. 1) are not affected.

一方、キャスタ７（７）及び主輪８（８）はシャシ３に取り付けてあるため、キャスタ７（７）及び主輪８（８）に荷重及び衝撃が与えられても耐久性が高く、従って直進性に影響が及ぼされない。また、前述した脚部フレーム部材５２（５２）はシャシ３に立設してあるため、キャスタ７（７）及び主輪８（８）に衝撃が与えられた場合であっても、当該衝撃はシャシ３に伝えられて、脚部フレーム部材５２（５２）に屈折手段９（９）が開く方向の力として作用しない。従って、走行中の衝撃によって屈折手段９（９）が開くことが回避され安全性も高い。 On the other hand, since the casters 7 (7) and the main wheels 8 (8) are attached to the chassis 3, the casters 7 (7) and the main wheels 8 (8) are highly durable even if a load and an impact are applied thereto. Straightness is not affected. Further, since the above-described leg frame member 52 (52) is erected on the chassis 3, even when an impact is applied to the caster 7 (7) and the main wheel 8 (8), the impact is not affected. It is transmitted to the chassis 3 and does not act on the leg frame member 52 (52) as a force in the direction in which the refraction means 9 (9) opens. Therefore, the refraction means 9 (9) is prevented from opening due to an impact during traveling, and safety is high.

なお、本実施形態では第１脚部フレーム部材５２１と第２脚部フレーム部材５２２とをダイヤルロック１９で連結した場合について説明したが、本発明はこれに限らず、所定方向へ屈折して当該姿勢を保持し得るように構成された他の関節継手を用いることができる。 In the present embodiment, the case where the first leg frame member 521 and the second leg frame member 522 are connected by the dial lock 19 has been described. However, the present invention is not limited to this, and the first leg frame member 521 is bent in a predetermined direction. Other articulated joints configured to maintain posture can be used.

（第４実施形態）
図１３及び図１４は、第４実施形態に係る車椅子のフレームを示す正面図及び側面図であり、第３実施形態の車椅子のフレームとは異なる機構でリクライニング可能になしてある。なお、両図中、図７及び図８に示した部分に対応する部分には同じ番号を付してその説明を省略する。 (Fourth embodiment)
FIG.13 and FIG.14 is the front view and side view which show the frame of the wheelchair which concerns on 4th Embodiment, and can be reclined by the mechanism different from the frame of the wheelchair of 3rd Embodiment. In both figures, parts corresponding to those shown in FIG. 7 and FIG.

図１３及び図１４に示したように、第１脚部フレーム部材５２１，５２１の間に架設した脚部連結フレーム部材５５と座部用フレーム部材４のコ字状底部４２との間には、シリンダホルダ１４，１４及び該シリンダホルダ１４，１４内に進退可能に挿入されたロッド１５（１５）を備えるアームシリンダ１６，１６が脚部連結フレーム部材５５の長手方向へ適宜の距離を隔てて架設してある。 As shown in FIGS. 13 and 14, between the leg connecting frame member 55 constructed between the first leg frame members 521 and 521 and the U-shaped bottom portion 42 of the seat frame member 4, Arm cylinders 16, 16 having cylinder holders 14, 14 and rods 15 (15) inserted in the cylinder holders 14, 14 so as to be able to advance and retract are installed at an appropriate distance in the longitudinal direction of the leg connecting frame member 55. It is.

前記シリンダホルダ１４は、該シリンダホルダ１４の周面であってロッド１５が挿入された側とは反対側の端部近傍の位置で前記脚部連結フレーム部材５５の周面に、該脚部連結フレーム部材５５の中心軸周りに回動自在に連結してあり、また前記ロッド１５のシリンダホルダ１４内に挿入された側とは反対側の端部を座部用フレーム部材４の底部４２に、前記脚部連結フレーム部材５５と平行をなす軸周りに回動自在に連結してある。また、シリンダホルダ１４の長手方向の中途位置には、ロッド１５の進退位置を保持するストッパが内設してあり、その周面には前記ストッパを解除・作動させるスイッチ１５１が設けてある。 The cylinder holder 14 is connected to the peripheral surface of the leg connecting frame member 55 at a position near the end of the cylinder holder 14 on the side opposite to the side where the rod 15 is inserted. The end of the rod 15 opposite to the side inserted into the cylinder holder 14 is connected to the bottom 42 of the seat frame 4. It is connected so as to be rotatable about an axis parallel to the leg connecting frame member 55. Further, a stopper for holding the forward / backward position of the rod 15 is provided in the middle position in the longitudinal direction of the cylinder holder 14, and a switch 151 for releasing and operating the stopper is provided on the peripheral surface thereof.

ところで、前述した側部フレーム部材５１（５１）及び座部用フレーム部材４は、第２脚部フレーム部材５２２（５２２）に対して一体的に回動し得るようになっている。 By the way, the side frame member 51 (51) and the seat frame member 4 described above can rotate integrally with respect to the second leg frame member 522 (522).

一方、前述した持ち手用フレーム部材５７には遠隔レバー１０が取り付けてあり、該遠隔レバー１０にはワイヤ１１（１１）の一端が接続してある。ワイヤ１１（１１）の他端は前述したスイッチ１５１（１５１）に係合してあり、ワイヤ１１（１１）が遠隔レバー１０側に引かれると、スイッチ１５１（１５１）を介してストッパが解除され、ワイヤ１１（１１）への引張り力が無くなると、スイッチ１５１（１５１）を介してストッパが作動するようになっている。 On the other hand, the remote lever 10 is attached to the handle frame member 57 described above, and one end of a wire 11 (11) is connected to the remote lever 10. The other end of the wire 11 (11) is engaged with the switch 151 (151) described above, and when the wire 11 (11) is pulled toward the remote lever 10, the stopper is released via the switch 151 (151). When the pulling force on the wire 11 (11) is lost, the stopper is operated via the switch 151 (151).

このような車椅子にあっては、図１５に示した如く、車椅子を操作する第三者が持ち手用フレーム部材５７の遠隔レバー１０を操作してスイッチ１５１（１５１）を介してストッパを解除した状態で、持ち手用フレーム部材５７にシャシ３側への力を印加することによって、側部フレーム部材５１，５１をシャシ３側へ任意の角度でリクライニングさせた後、遠隔レバー１０を元の状態に復帰させてスイッチ１５１（１５１）を介してストッパを作動させることによって、側部フレーム部材５１，５１をそのリクライニング姿勢に保持することができる。 In such a wheelchair, as shown in FIG. 15, a third party operating the wheelchair operates the remote lever 10 of the handle frame member 57 to release the stopper via the switch 151 (151). In this state, by applying a force to the chassis 3 side to the handle frame member 57, the side frame members 51 and 51 are reclined to the chassis 3 side at an arbitrary angle, and then the remote lever 10 is returned to the original state. The side frame members 51 and 51 can be held in the reclining posture by returning to the position and operating the stopper via the switch 151 (151).

一方、このようなリクライニングを復帰させておき、図１６に示した如く、屈折手段９を屈折させて、第２脚部フレーム部材５２２が第１脚部フレーム部材５２１と対向するように折り畳まれるのに伴って、第１脚部フレーム部材５２１（５２１）がシャシ３の横フレーム部材３２と平行をなす軸周りにシャシ３から離隔する方向へ回動すると共に、突っ張り用フレーム部材６（６）の両端連結部がそれぞれシャシ３の横フレーム部材３２と平行をなす軸周りに回動しつつ傾頭して、第２脚部フレーム部材５２２（５２２）に連結した側部フレーム部材５１（５１）がシャシ３の縦フレーム部材３１（３１）に可及的に接近した姿勢に折り畳むことができる。 On the other hand, such reclining is restored, and the second leg frame member 522 is folded so as to face the first leg frame member 521 by refracting the refracting means 9 as shown in FIG. Accordingly, the first leg frame member 521 (521) rotates about the axis parallel to the horizontal frame member 32 of the chassis 3 in a direction away from the chassis 3, and the tension frame member 6 (6) The side frame members 51 (51) connected to the second leg frame members 522 (522) are tilted while the both end coupling portions are rotated around the axes parallel to the horizontal frame members 32 of the chassis 3, respectively. The chassis 3 can be folded into a posture as close as possible to the vertical frame member 31 (31) of the chassis 3.

これによって、リクライニング可能な車椅子であっても、当該車椅子をワンタッチでコンパクトに折り畳むことができる。また、当該車椅子は、脚部フレーム部材５２（５２）の中途位置を支点にして前述したように折り畳む構成になしてあるため、折り畳み動作中に座部シートＳ１及び背部シートＳ２（共に図１参照）に何らの影響も及ぼさない。 Thereby, even if it is a wheelchair which can be reclined, the said wheelchair can be folded compactly by one-touch. Further, since the wheelchair is configured to fold as described above with the midway position of the leg frame member 52 (52) as a fulcrum, the seat seat S1 and the back seat S2 (both see FIG. 1) during the folding operation. ) Is not affected at all.

一方、前同様、キャスタ７（７）及び主輪８（８）はシャシ３に取り付けてあるため、キャスタ７（７）及び主輪８（８）に荷重及び衝撃が与えられても耐久性が高く、従って直進性に影響が及ぼされない。また、前述した脚部フレーム部材５２（５２）はシャシ３に立設してあるため、キャスタ７（７）及び主輪８（８）に衝撃が与えられた場合であっても、当該衝撃はシャシ３に伝えられて、脚部フレーム部材５２（５２）に屈折手段９が開く方向の力として作用しない。従って、走行中の衝撃によって屈折手段９（９）が開くことが回避され安全性も高い。 On the other hand, since the casters 7 (7) and the main wheels 8 (8) are attached to the chassis 3 as before, the casters 7 (7) and the main wheels 8 (8) are durable even if a load and an impact are applied thereto. High, so it does not affect straightness. Further, since the above-described leg frame member 52 (52) is erected on the chassis 3, even when an impact is applied to the caster 7 (7) and the main wheel 8 (8), the impact is not affected. It is transmitted to the chassis 3 and does not act on the leg frame member 52 (52) as a force in the direction in which the refraction means 9 opens. Therefore, the refraction means 9 (9) is prevented from opening due to an impact during traveling, and safety is high.

（第５実施形態）
図１７及び図１８は、本発明に係る第５実施形態の車椅子のフレームを示す正面図及び側面図であり、第４実施形態の車椅子のフレームとは異なる構成でリクライニングし得るようになしてある。なお、両図中、図１３及び図１４に示した部分に対応する部分には同じ番号を付してその説明を省略する。 (Fifth embodiment)
FIGS. 17 and 18 are a front view and a side view showing a wheelchair frame according to the fifth embodiment of the present invention, which can be reclined with a configuration different from that of the wheelchair according to the fourth embodiment. . In both figures, parts corresponding to those shown in FIGS. 13 and 14 are designated by the same reference numerals and description thereof is omitted.

本実施形態の車椅子のフレームにあっては、アームシリンダ１６，１６が脚部連結フレーム部材５５とシャシ３の横フレーム部材３２との間に架設してある。アームシリンダ１６を構成するシリンダホルダ１４は、該シリンダホルダ１４の周面であってロッド１５が挿入された側とは反対側の端部近傍の位置で脚部連結フレーム部材５５の周面に、シャシ３の横フレーム部材３２と平行をなす軸周りに回動自在に連結してあり、またアームシリンダ１６を構成するロッド１５のシリンダホルダ１４内に挿入された側とは反対側の端部はシャシ３の横フレーム部材３２の周面に、横フレーム部材３２と平行をなす軸周りに回動自在に連結してある。 In the wheelchair frame of the present embodiment, the arm cylinders 16 and 16 are constructed between the leg connecting frame member 55 and the lateral frame member 32 of the chassis 3. The cylinder holder 14 constituting the arm cylinder 16 is arranged on the peripheral surface of the leg connecting frame member 55 at a position near the end of the cylinder holder 14 on the side opposite to the side where the rod 15 is inserted. The end of the rod 15 constituting the arm cylinder 16 opposite to the side inserted into the cylinder holder 14 is connected to the chassis 3 so as to be rotatable about an axis parallel to the horizontal frame member 32. The chassis 3 is connected to the peripheral surface of the horizontal frame member 32 so as to be rotatable about an axis parallel to the horizontal frame member 32.

そして、図１９に示した如く、車椅子を操作する第三者が持ち手用フレーム部材５７の遠隔レバー１０を操作してストッパ１５１（１５１）を解除した状態で、持ち手用フレーム部材５７にシャシ３側への力を印加することによって、側部フレーム部材５１（５１）をシャシ３側へ任意の角度でリクライニングさせた後、遠隔レバー１０を元の状態に復帰させてストッパ１５１（１５１）を作動させることによって、側部フレーム部材５１（５１）をそのリクライニング姿勢に保持することができる。 Then, as shown in FIG. 19, the third person operating the wheelchair operates the remote lever 10 of the handle frame member 57 to release the stopper 151 (151), and the chassis member 57 is then moved to the chassis frame member 57. By applying a force to the side 3, the side frame member 51 (51) is reclined to the chassis 3 side at an arbitrary angle, and then the remote lever 10 is returned to the original state to stop the stopper 151 (151). By actuating, the side frame member 51 (51) can be held in its reclining posture.

一方、図２０に示した如く、側部フレーム部材５１（５１）をシャシ３側へ更にリクライニングさせておき、屈折手段９を屈折させて、第２脚部フレーム部材５２２が第１脚部フレーム部材５２１と対向するように折り畳まれるのに伴って、第１脚部フレーム部材５２１（５２１）がシャシ３の横フレーム部材３２と平行をなす軸周りにシャシ３から離隔する方向へ回動すると共に、突っ張り用フレーム部材６（６）の両端連結部がそれぞれシャシ３の横フレーム部材３２と平行をなす軸周りに回動しつつ傾頭して、第２脚部フレーム部材５２２（５２２）に連結した側部フレーム部材５１（５１）がシャシ３の縦フレーム部材３１（３１）に可及的に接近した姿勢に折り畳むことができる。 On the other hand, as shown in FIG. 20, the side frame member 51 (51) is further reclined toward the chassis 3, the refracting means 9 is refracted, and the second leg frame member 522 becomes the first leg frame member. As the first leg frame member 521 (521) is folded so as to face the 521, the first leg frame member 521 (521) rotates around the axis parallel to the lateral frame member 32 of the chassis 3 in a direction away from the chassis 3, Both end connecting portions of the tension frame member 6 (6) are tilted while rotating around an axis parallel to the horizontal frame member 32 of the chassis 3, and are connected to the second leg frame member 522 (522). The side frame member 51 (51) can be folded into a posture as close as possible to the vertical frame member 31 (31) of the chassis 3.

これによって、リクライニング可能な車椅子であっても、当該車椅子をワンタッチでコンパクトに折り畳むことができる。また、前同様、折り畳み動作中に座部シートＳ１及び背部シートＳ２（共に図１参照）に何らの影響も及ぼさない。更に、キャスタ７（７）及び主輪８（８）に荷重及び衝撃が与えられても耐久性が高く、従って直進性に影響が及ぼされない。また、キャスタ７（７）及び主輪８（８）に衝撃が与えられた場合であっても、当該衝撃はシャシ３に伝えられて、脚部フレーム部材５２（５２）に屈折手段９が開く方向の力として作用しないため、走行中の衝撃によって屈折手段９（９）が開くことが回避され安全性も高い。 Thereby, even if it is a wheelchair which can be reclined, the said wheelchair can be folded compactly by one-touch. Further, as before, there is no influence on the seat S1 and the back S2 (both see FIG. 1) during the folding operation. Furthermore, even if a load and an impact are applied to the casters 7 (7) and the main wheels 8 (8), the durability is high, and therefore the straight running performance is not affected. Further, even when an impact is applied to the casters 7 (7) and the main wheel 8 (8), the impact is transmitted to the chassis 3 and the refracting means 9 opens to the leg frame member 52 (52). Since it does not act as a directional force, the refraction means 9 (9) is prevented from opening due to an impact during traveling, and safety is high.

２フレーム
３シャシ
４座部用フレーム部材
５側部支持手段
６突っ張り用フレーム部材
７キャスタ
８主輪
９屈折手段
３１縦フレーム部材
３２横フレーム部材
５１側部フレーム部材
５２脚部フレーム部材
９１ホルダ部
９３嵌合部
９５プランジャー
９６操作レバー
Ｓ１座部シート
Ｓ２背部シート
2 Frame 3 Chassis 4 Seat frame member 5 Side support means 6 Stretching frame member 7 Caster 8 Main wheel 9 Refraction means 31 Vertical frame member 32 Horizontal frame member 51 Side frame member 52 Leg frame member 91 Holder part 93 Fitting part 95 Plunger 96 Operation lever S1 Seat seat S2 Back seat

Claims

A pair of seat frame members (4) for carrying a seated user and a pair of long frame members (51, 52) arranged on both sides of the seat frame members (4). The seat frame member is provided with a side support means (5), a caster (7) as a front wheel, and a main wheel (8) as a rear wheel, at the midway position in the longitudinal direction of both side support means (5). In a wheelchair that supports (4) and is movable,
A pair of vertical frame members wheelchair to the width direction arranged at a suitable distance (31), forms a parallel to the width direction of the wheelchair, one or more transverse frame members for connecting the two longitudinal frame members (31) (32) with a chassis (3),
The caster (7) and the main wheel (8) are rotatably attached to both ends of the vertical frame member (31) of the chassis (3),
The seat frame member (4) has a frame portion facing the both side support means (5) and extending in a direction intersecting with the longitudinal direction of the both side support means (5). , Attached to the both side support means (5) at a midway position in the longitudinal direction of both frame parts,
The leg portions (52), which are portions from the position for supporting the seat frame member (4) of the both-side support means (5) to the position connected to the chassis (3), are respectively located on the chassis (3) side. A first member (521), and a second member (522) on the seat frame member (4) side,
One end side of each of the first members (521) is connected to a position near the end of the chassis (3) on the caster (7) side so as to be rotatable around an axis parallel to the horizontal frame member (32). Allowed
The vertical frame member (31) or the horizontal frame member (32) of the chassis (3) , and the position of the portion on the main wheel (8) side from the position where one end sides of the first members (521) are connected to each other. longitudinal midway between the position, or the seat portion frame member (4) is a by both side portions supporting means (5) Roll the main wheel from mounted position (8 of both the second member (522) ) side respectively between the position of a portion of the bracing frame member for receiving a load applied to both sides supporting means (5) (6), and its both ends the transverse frame members (32) It is installed so that it can rotate around a parallel axis.
Between the opposing ends of the first member (521) and the second member (522) that form a pair, the second member (522) is placed around the axis parallel to the horizontal frame member (32). (3) A refracting means (9) capable of being refracted to the side is interposed,
When both the first members (521) and both the second members (522) are rotated around the axis parallel to the horizontal frame member (32) by the both refracting means (9) , both first members ( 521) is pivotally connected to the chassis (3) so that the other end of the first members (521) is pivoted to the opposite side of the wheelchair (8), Further, the first member (521) and the second member (522) are configured to be foldable so that both the second members (522) are tilted toward the vertical frame member (31) side as they approach each other. A wheelchair characterized by being.

The refracting means (9) is a first member (521) or a second member (522) and is provided at an end portion facing each other , and the second member (522) or the first member (521) is mutually connected. A holder part (91) for preventing the second peripheral member (522) from being refracted to the opposite side of the chassis (3) by contacting the opposing end surface, and the holder part (91) and the second member ( 522) or end portions of the first member (521) facing each other so as to be rotatable about an axis parallel to the horizontal frame member (32), and the refraction. The wheelchair according to claim 1, further comprising a stopper (95) for stopping the refraction action of the means (9).

Comprising a canceling means for canceling said stopper (92, 95), the said release means and lever (10), a wire (11) which is bridged between the and the lever (10) a stopper (92, 95) The wheelchair of Claim 2 which comprises.

The refracting means (9) includes a joint joint (19) which can be rotated at a rotation angle at which the second member (522) can be refracted toward the chassis (3) around an axis parallel to the horizontal frame member (32). The wheelchair according to claim 1 is provided.