JP2001046441A - Telescopic locking mechanism for use with wheelchair - Google Patents

Telescopic locking mechanism for use with wheelchair

Info

Publication number
JP2001046441A
JP2001046441A JP11224918A JP22491899A JP2001046441A JP 2001046441 A JP2001046441 A JP 2001046441A JP 11224918 A JP11224918 A JP 11224918A JP 22491899 A JP22491899 A JP 22491899A JP 2001046441 A JP2001046441 A JP 2001046441A
Authority
JP
Japan
Prior art keywords
hollow member
movable
inner hollow
outer hollow
movable member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11224918A
Other languages
Japanese (ja)
Inventor
Shigeyuki Matsunaga
茂之 松永
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Matsunaga Manufactory KK
Original Assignee
Matsunaga Manufactory KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsunaga Manufactory KK filed Critical Matsunaga Manufactory KK
Priority to JP11224918A priority Critical patent/JP2001046441A/en
Publication of JP2001046441A publication Critical patent/JP2001046441A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a telescopic locking mechanism easy to operate and quickly and accurately adjustable to a desired length. SOLUTION: This locking mechanism 30 steplessly supports a footrest stay 21 at a certain position. In this case, the locking mechanism 30 includes: an outer hollow member 31; an inner hollow member 32; a core member axially movably provided in the center of the inside of the inner hollow member 32; a movable member 35 provided on the core member to move axially along with the core member; a pair of braking members rotating about a central shaft provided in the core member, with their tips abutting on or moving away from the inner surface of the outer hollow member 31 as the movable members 35 moves; an energizing member for energizing the movable member 35 so that the braking members are rotated at all times in the direction to abut on the inner surface of the outer hollow member 31; and an operating part 39 provided on the inner hollow member 32 for operating the movable member 35.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、車椅子を構成する
足台ステー、肘掛部、背部、把手部及び足載せ部を任意
の位置で無段階に支持する伸縮自在ロック機構に関する
ものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic lock mechanism for continuously supporting a foot stay, an armrest, a back, a handle, and a footrest constituting a wheelchair at arbitrary positions.

【0002】[0002]

【従来の技術】従来より、足台ステー、肘掛部、背部、
把手部及び足載せ部を任意の位置で支持するロック機構
しては、種々のものが提案されている。その中でも一般
的には、外側中空部材と、この外側中空部材に対して長
さ方向に移動自在に挿入した内側中空部材と、これら内
側中空部材と外側中空部材を互いに固定するために、外
側中空部材の側部に形成された螺着孔にボルト形状の締
付部材を螺着させ、内側中空部材に形成された凹部に締
付部材の先端が当接させることにより固定させるものが
ある。
2. Description of the Related Art Conventionally, a footrest, an armrest, a back,
Various lock mechanisms have been proposed as a lock mechanism for supporting the handle and the foot rest at arbitrary positions. Among them, generally, an outer hollow member, an inner hollow member movably inserted in the outer hollow member in the length direction, and an outer hollow member for fixing the inner hollow member and the outer hollow member to each other. In some cases, a bolt-shaped tightening member is screwed into a screw hole formed in a side portion of the member, and the distal end of the tightening member abuts on a concave portion formed in the inner hollow member to be fixed.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、このよ
うに構成されたロック機構においては、片手で一方の中
空部材を掴み、他方の手で締付部材の締め付けをゆるめ
つつ、長さを調整するという作業を行うため、長さ調整
に手間がかかり、しかも両手で操作する必要があり、非
常に使いにくいという問題があった。
However, in the lock mechanism configured as described above, one of the hollow members is gripped with one hand, and the length is adjusted while loosening the tightening member with the other hand. In order to perform the work, it takes time and effort to adjust the length, and furthermore, it is necessary to operate with both hands, which is very difficult to use.

【0004】また、所望の長さで固定するためには、締
付部材を締め付ける必要があるため、その締付作業をす
る際に、長さが所望の長さからズレてしまうことが多々
あり、正確に長さ調整できないという問題があった。
[0004] Further, in order to fix to a desired length, it is necessary to tighten a tightening member. Therefore, when performing the tightening operation, the length often deviates from the desired length. However, there is a problem that the length cannot be adjusted accurately.

【0005】そこで、本発明は、このような従来の技術
に存在する問題点に着目してなされたものであり、その
目的は、簡単に操作でき、迅速且つ正確に所望の長さに
調整することができる伸縮自在ロック機構を提供するこ
とである。
Accordingly, the present invention has been made in view of such problems existing in the prior art, and an object of the present invention is to make it easy to operate, adjust quickly and accurately to a desired length. It is an object of the present invention to provide a telescopic locking mechanism.

【0006】[0006]

【課題を解決するための手段】以上を解決するために、
本各発明の採った手段は、実施形態において使用する符
号を付して説明すると、請求項1記載の発明は、一端が
車椅子の本体フレーム10に設けられ、他端が前記本体
フレーム10に回動自在に設けられた足台ステー21に
設けられるとともに、前記足台ステー21を任意の位置
で無段階に支持する伸縮自在ロック機構30を前提と
し、外側中空部材31と、前記外側中空部材31に移動
自在に挿入された内側中空部材32と、前記内側中空部
材32の内部中心に設けられ且つ軸線方向に移動自在に
設けられた芯金部材33と、前記芯金部材33に設けら
れ且つ前記芯金部材33とともに軸線方向に移動する可
動部材35と、前記芯金部材33に設けられた中心軸3
8を中心に双方が回動するとともに、前記可動部材35
の移動に伴って、先端部側が外側中空部材31の内周面
に当接又は離間する一対の制動部材34a、34bと、
前記制動部材34a、34bを常時は外側中空部材31
の内周面に当接させる方向に回動させるべく前記可動部
材35を付勢する付勢部材36と、前記内側中空部材3
2に設けられ前記可動部材35を操作する操作部39と
を具備したことをその要旨とした。
Means for Solving the Problems To solve the above,
Means adopted by each of the present invention will be described with reference numerals used in the embodiment. The invention according to claim 1 has one end provided on the body frame 10 of the wheelchair, and the other end turned around the main body frame 10. An outer hollow member 31 and the outer hollow member 31 are provided on a freely movable footrest 21 and are provided with a telescopic locking mechanism 30 that supports the footrest 21 at any position in a stepless manner. An inner hollow member 32 movably inserted into the inner hollow member 32; a core member 33 provided at an inner center of the inner hollow member 32 and movably provided in the axial direction; A movable member 35 that moves in the axial direction together with the core member 33, and a central shaft 3 provided on the core member 33;
8 about the movable member 35
A pair of braking members 34a, 34b whose leading ends contact or separate from the inner peripheral surface of the outer hollow member 31 with the movement of
The braking members 34a, 34b are always connected to the outer hollow member 31.
A biasing member 36 for biasing the movable member 35 to rotate in a direction to contact the inner peripheral surface of the inner hollow member 3
2 and an operation section 39 for operating the movable member 35.

【0007】次に、請求項2記載の発明は、一端が車椅
子の本体フレーム10に設けられ、他端が前記本体フレ
ーム10に回動自在に設けられた背部フレーム40に設
けられるとともに、前記背部フレーム40を任意の位置
で無段階に支持する伸縮自在ロック機構30を前提と
し、外側中空部材31と、前記外側中空部材31に移動
自在に挿入された内側中空部材32と、前記内側中空部
材32の内部中心に設けられ且つ軸線方向に移動自在に
設けられた芯金部材33と、前記芯金部材33に設けら
れ且つ前記芯金部材33とともに軸線方向に移動する可
動部材35と、前記芯金部材33に設けられた中心軸3
8を中心に双方が回動するとともに、前記可動部材35
の移動に伴って、先端部側が外側中空部材31の内周面
に当接又は離間する一対の制動部材34a、34bと、
前記制動部材34a、34bを常時は外側中空部材31
の内周面に当接させる方向に回動させるべく前記可動部
材35を付勢する付勢部材36と、前記内側中空部材3
2に設けられ前記可動部材35を操作する操作部39と
を具備したことをその要旨とした。
Next, the invention according to claim 2 is characterized in that one end is provided on a body frame 10 of a wheelchair, and the other end is provided on a back frame 40 rotatably provided on the body frame 10, An outer hollow member 31, an inner hollow member 32 movably inserted into the outer hollow member 31, and an inner hollow member 32 are provided on the premise of a telescopic locking mechanism 30 that supports the frame 40 at any position in a stepless manner. A core member 33 provided at the center of the inside and movably in the axial direction; a movable member 35 provided on the core member 33 and moving in the axial direction together with the core member 33; Central shaft 3 provided on member 33
8 about the movable member 35
A pair of braking members 34a, 34b whose leading ends contact or separate from the inner peripheral surface of the outer hollow member 31 with the movement of
The braking members 34a, 34b are always connected to the outer hollow member 31.
A biasing member 36 for biasing the movable member 35 to rotate in a direction to contact the inner peripheral surface of the inner hollow member 3
2 and an operation section 39 for operating the movable member 35.

【0008】次に、請求項3記載の発明は、車椅子にお
ける本体フレーム10の少なくとも一方の側部に配設さ
れた肘掛部50を任意の位置で無段階に支持する伸縮自
在ロック機構30を前提とし、前記肘掛部50が設けら
れた内側中空部材32と、前記本体フレーム10に設け
られ前記内側中空部材32が移動自在に挿入された外側
中空部材31と、前記内側中空部材32の内部中心に設
けられ且つ軸線方向に移動自在に設けられた芯金部材3
3と、前記芯金部材33に設けられた中心軸38を中心
に双方が回動するとともに、前記芯金部材33の軸線方
向への移動に伴って先端部側が外側中空部材31の内周
面に当接又は離間する一対の制動部材34a,34b
と、前記芯金部材33に設けられ且つ前記芯金部材33
とともに軸線方向に移動する可動部材35と、前記制動
部材34a,34bを常時は外側中空部材の内周面に当
接させる方向に回動させるべく前記可動部材35を付勢
する付勢部材36と、前記内側中空部材32に設けられ
前記可動部材35を操作する操作部39とを具備したこ
とをその要旨とした。
Next, the invention according to claim 3 is based on a telescopic lock mechanism 30 for continuously supporting an armrest 50 provided on at least one side of the body frame 10 in a wheelchair at an arbitrary position. The inner hollow member 32 provided with the armrest portion 50, the outer hollow member 31 provided in the main body frame 10 and into which the inner hollow member 32 is movably inserted, and the inner center of the inner hollow member 32 Core member 3 provided and provided movably in the axial direction
3 and both pivot about a central axis 38 provided on the core member 33, and the distal end side is the inner peripheral surface of the outer hollow member 31 as the core member 33 moves in the axial direction. Pair of braking members 34a, 34b that come into contact with or separate from
And the core member 33 provided on the core member 33
And a biasing member 36 for biasing the movable member 35 so as to rotate the braking members 34a and 34b in a direction in which the braking members 34a and 34b normally contact the inner peripheral surface of the outer hollow member. And an operation section 39 provided on the inner hollow member 32 to operate the movable member 35.

【0009】次に、請求項4記載の発明は、車椅子にお
ける背部フレーム40の上縁両端に設けられた把手部6
0を任意の位置で無段階に支持する伸縮自在ロック機構
30を前提とし、前記把手部60が設けられた内側中空
部材32と、前記背部フレーム40を構成するとともに
前記内側中空部材32が移動自在に挿入された外側中空
部材31と、前記内側中空部材32の内部中心に設けら
れ且つ軸線方向に移動自在に設けられた芯金部材33
と、前記芯金部材33に設けられた中心軸38を中心に
双方が回動するとともに、前記芯金部材33の軸線方向
への移動に伴って先端部側が外側中空部材31の内周面
に当接又は離間する一対の制動部材34a,34bと、
前記芯金部材33に設けられ且つ前記芯金部材33とと
もに軸線方向に移動する可動部材35と、前記制動部材
34a,34bを常時は外側中空部材31の内周面に当
接させる方向に回動させるべく前記可動部材35を付勢
する付勢部材36と、前記内側中空部材32に設けられ
前記可動部材35を操作する操作部39とを具備したこ
とを特徴を具備したことをその要旨とした。
Next, the invention according to a fourth aspect of the present invention is directed to a handle 6 provided at both ends of an upper edge of a back frame 40 in a wheelchair.
The inner hollow member 32 provided with the handle portion 60 and the back frame 40 are provided, and the inner hollow member 32 is movable, assuming the telescopic lock mechanism 30 that supports the 0 at any position in a stepless manner. And a metal core member 33 provided at the inner center of the inner hollow member 32 and movably in the axial direction.
And both pivot about a central shaft 38 provided on the core member 33, and the distal end portion is moved to the inner peripheral surface of the outer hollow member 31 as the core member 33 moves in the axial direction. A pair of braking members 34a, 34b that contact or separate,
A movable member 35 provided on the metal core member 33 and moving in the axial direction together with the metal core member 33; and a rotating direction in which the braking members 34a and 34b are always in contact with the inner peripheral surface of the outer hollow member 31. The gist is that a biasing member 36 for biasing the movable member 35 and an operation portion 39 provided on the inner hollow member 32 to operate the movable member 35 are provided. .

【0010】次に、請求項5記載の発明は、車椅子にお
ける足台ステー21の先端に設けられた足載せ部23を
任意の位置で無段階に支持する伸縮自在ロック機構30
を前提とするものであって、前記足載せ部23が設けら
れた内側中空部材32と、前記足台ステー21を構成す
るとともに前記内側中空部材32が移動自在に挿入され
た外側中空部材31と、前記内側中空部材32の内部中
心に設けられ且つ軸線方向に移動自在に設けられた芯金
部材33と、前記芯金部材33に設けられた中心軸を中
心に双方が回動するとともに、前記芯金部材33の軸線
方向への移動に伴って、先端部側が外側中空部材31の
内周面に当接又は離間する一対の制動部材34a,34
bと、前記芯金部材33に設けられ且つ前記芯金部材3
3とともに軸線方向に移動する可動部材35と、前記制
動部材34a,34bを常時は外側中空部材31の内周
面に当接させる方向に回動させるべく前記可動部材35
を付勢する付勢部材36と、前記内側中空部材36に設
けられ前記可動部材35を操作する操作部39とを具備
したことをその要旨とした。
Next, a fifth aspect of the present invention is a telescopic lock mechanism 30 for continuously supporting a footrest 23 provided at the tip of a footrest 21 in a wheelchair at an arbitrary position.
And an inner hollow member 32 provided with the footrest portion 23, and an outer hollow member 31 constituting the footrest stay 21 and into which the inner hollow member 32 is movably inserted. A core member 33 provided at the center of the inside of the inner hollow member 32 and movably in the axial direction, and both pivot about a central axis provided on the core member 33, and A pair of braking members 34 a, 34 of which the tip ends contact or separate from the inner peripheral surface of the outer hollow member 31 with the movement of the cored bar member 33 in the axial direction.
b, provided on the core member 33 and the core member 3
A movable member 35 that moves in the axial direction together with the movable member 3; and a movable member 35 that rotates the braking members 34a and 34b in a direction in which the braking members 34a and 34b normally contact the inner peripheral surface of the outer hollow member 31.
The gist of the present invention is that an urging member 36 for urging the movable member 35 is provided, and an operating portion 39 provided on the inner hollow member 36 to operate the movable member 35 is provided.

【0011】最後に、請求項6記載の発明は、請求項1
乃至5の何れか一項記載の操作部39を、前記内側中空
部材32の互いに対向する部位に軸線方向に長い長孔3
2aを形成し、前記長孔32aから可動部材35を突出
させた構成としたことをその要旨とした。
Finally, the invention according to claim 6 is based on claim 1.
The operation part 39 according to any one of claims 1 to 5, wherein the long hole 3 extending in the axial direction is provided in a portion of the inner hollow member 32 facing each other.
The main point is that the movable member 35 is formed so as to protrude from the elongated hole 32a.

【0012】[0012]

【発明の実施の形態】本発明の車椅子における伸縮自在
ロック機構の実施の形態を説明するが、これは代表的な
例を示したものであり、その要旨を超えない限り、以下
の実施例により本発明が限定されるものではない。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a telescopic locking mechanism in a wheelchair according to the present invention will be described. However, this is a typical example, and unless it exceeds the gist thereof, the following embodiment will be described. The present invention is not limited.

【0013】図1には、請求項1記載の発明にかかる、
足台ステーを任意の位置で無段階に支持する伸縮自在ロ
ック機構30の一実施例が示してある。本体フレーム1
0の下部には、各々一対の前輪11及び後輪12が軸着
してあり、足台20は、本体フレーム10に回動自在に
枢支された足台ステー21と、前記足台ステー21に回
動自在に遊嵌されて使用者のふくらはぎを支えるパッド
22と、前記足台ステー21の先端で回動自在に枢支さ
れて使用者の足裏を支える足載せ部23とから構成され
ている。また、足台ステー21の基端側と本体フレーム
10との間には、後述する外側中空部材31に移動自在
に挿入された内側中空部材32から構成された伸縮自在
ロック機構30が枢支されている。
FIG. 1 shows an embodiment of the present invention.
One embodiment of a telescopic locking mechanism 30 for supporting a foot stay in a continuous manner at an arbitrary position is shown. Body frame 1
0, a pair of front wheels 11 and a rear wheel 12 are respectively mounted on the shaft. The footrest 20 includes a footrest 21 pivotally supported by the main body frame 10 and the footrest 21. The pad 22 is rotatably loosely fitted to the user and supports the calf of the user, and the footrest 23 is rotatably supported by the tip of the footrest 21 and supports the sole of the user. ing. An extensible lock mechanism 30 composed of an inner hollow member 32 movably inserted into an outer hollow member 31 described later is pivotally supported between the base end side of the footrest stay 21 and the main body frame 10. ing.

【0014】次に、以上のように構成された、本体フレ
ーム10、足台ステー21及び伸縮自在ロック機構30
との関係を部分的に拡大して示した図2に基づいて説明
する。前記足台ステー21の基端は、本体フレーム10
に固着された断面コの字形状の支持部材13にボルト・
ナットを介して枢支されており、外側中空部材31の中
央に固着されたボルトを前記本体フレームに固着された
円柱状の支持部材14に回動自在に支持されている。ま
た、内側中空部材32の先端部は、断面略L字形形状の
支持部材15がダブルナットによって固定されており、
前記支持部材15の長手側は前記足台ステー21の基端
側にボルト・ナットを介して枢支されている。
Next, the main body frame 10, the footrest 21 and the telescopic lock mechanism 30 constructed as described above.
2 will be described with reference to FIG. The base end of the foot stay 21 is
The support member 13 having a U-shaped cross section fixed to the
It is pivotally supported via a nut, and a bolt fixed to the center of the outer hollow member 31 is rotatably supported by a cylindrical support member 14 fixed to the main body frame. Further, a support member 15 having a substantially L-shaped cross section is fixed to a distal end portion of the inner hollow member 32 by a double nut,
The longitudinal side of the support member 15 is pivotally supported on the base end side of the foot stay 21 via bolts and nuts.

【0015】続いて、足台ステー21を支持する伸縮自
在ロック機構30の構造を図3に基づいて説明する。外
側中空部材31及び内側中空部材32は、いずれも鋼材
等から中空形状に形成されており、その外部表面は、塗
装、メッキ等などの表面処理が施されている。そして、
内側中空部材32の内部中心且つ軸線方向には、芯金部
材33が移動自在に設けられている。前記内側中空部材
32には、図示するように、略T字形状に形成された移
動案内部材37が設けられている。移動案内部材37の
中心部には、芯金部材33が挿通される挿通孔33aが
形成されている。
Next, the structure of the telescopic lock mechanism 30 for supporting the foot stay 21 will be described with reference to FIG. Each of the outer hollow member 31 and the inner hollow member 32 is formed in a hollow shape from a steel material or the like, and the outer surface thereof is subjected to a surface treatment such as painting or plating. And
A core metal member 33 is movably provided in the center of the inner hollow member 32 and in the axial direction. As shown, the inner hollow member 32 is provided with a movement guide member 37 formed in a substantially T-shape. At the center of the movement guide member 37, an insertion hole 33a into which the cored bar member 33 is inserted is formed.

【0016】前記内側中空部材32の内部と芯金部材3
3との間には、合成樹脂等から棒形状に形成された可動
部材35が芯金部材33と一体的に移動するように設け
られている。可動部材35は、芯金部材33に対して軸
線方向と直交する方向に挿通されている。また、内側中
空部材32に設けられた操作部39は、可動部材35の
両端が内側中空部材32の互いに対向する部位に形成さ
れた長孔32aから少し突出するように構成されてい
る。前記可動部材35と移動案内部材37との間には、
請求項に付勢部材と記載したスプリング36が設けられ
ており、上記スプリング36の弾発力によって、常時は
可動部材35を押し上げる方向に付勢されている。
The inside of the inner hollow member 32 and the core member 3
A movable member 35 formed in a rod shape from a synthetic resin or the like is provided between the core member 33 and the movable member 35. The movable member 35 is inserted into the core member 33 in a direction perpendicular to the axial direction. The operating portion 39 provided on the inner hollow member 32 is configured such that both ends of the movable member 35 slightly protrude from the elongated holes 32 a formed at the opposing portions of the inner hollow member 32. Between the movable member 35 and the movement guide member 37,
A spring 36 described as an urging member in the claims is provided, and is normally urged in a direction to push up the movable member 35 by the elastic force of the spring 36.

【0017】前記芯金部材33の端部には中心軸38が
設けられており、この中心軸38を中心に双方が回動
し、先端側が相対的に近接又は離間する一対の制動部材
34a,34bが設けられている。前記制動部材34
a、34bは、芯金部材33の軸線方向への移動に伴っ
て、先端部側が外側中空部材31の内周面側に当接又は
離間するように構成されている。即ち、一方の制動部材
34aは、図示するように、その中程で移動案内部材3
7の一方面に回動自在に枢支され、他方の制動部材34
bも、その中程で移動案内部材37の他方面に回動自在
に枢支されて、図面視略V字形状となるように配設され
ている。
A center shaft 38 is provided at the end of the metal core member 33. A pair of braking members 34a, 34a, both of which rotate around the center shaft 38 and whose front ends are relatively close to or separated from each other. 34b are provided. The braking member 34
The a and b are configured such that the distal end portion abuts or separates from the inner peripheral surface side of the outer hollow member 31 as the cored bar member 33 moves in the axial direction. That is, as shown in the figure, one of the braking members 34a
7 is rotatably supported on one surface, and the other braking member 34
b is also rotatably supported by the other surface of the movement guide member 37 in the middle thereof so as to be substantially V-shaped as viewed in the drawing.

【0018】従って、内側中空部材32の両長孔32a
から突出する可動部材35を操作しない状態おいては、
上記スプリング36の弾発力によって可動部材35が押
し上げられる方向に付勢されるので、可動部材35に一
体的に設けられた芯金部材33も上方に引き上げられ、
それに連動してそれぞれの制動部材34a、34bの先
端側が外側中空部材31の内周面に当接され、内側中空
部材32と外側中空部材31は互いにロックされた状態
となる(第3図参照)。
Therefore, both long holes 32a of the inner hollow member 32
When the movable member 35 protruding from is not operated,
Since the movable member 35 is urged in a direction in which the movable member 35 is pushed up by the elastic force of the spring 36, the core metal member 33 provided integrally with the movable member 35 is also pulled upward,
In conjunction with this, the distal ends of the braking members 34a and 34b abut on the inner peripheral surface of the outer hollow member 31, and the inner hollow member 32 and the outer hollow member 31 are locked to each other (see FIG. 3). .

【0019】一方、ロックを解除するためには、図4に
示すように、可動部材35を引き下げれば(図示矢印方
向)に移動させれば、スプリング36の弾発力に抗しな
がら、芯金部材33とともに移動され、それと連動して
それぞれの制動部材34a,34bの先端側が外側中空
部材31の内周面から離間される。従って、外側中空部
材31に対して内側中空部材32は、長さ方向に自由に
移動できる状態となり、長さ調整を自在に行える。
On the other hand, in order to release the lock, as shown in FIG. 4, if the movable member 35 is pulled down and moved in the direction of the arrow shown in FIG. Moved together with the gold member 33, the leading ends of the respective braking members 34 a and 34 b are separated from the inner peripheral surface of the outer hollow member 31 in conjunction therewith. Therefore, the inner hollow member 32 can freely move in the length direction with respect to the outer hollow member 31, and the length can be freely adjusted.

【0020】そして、長さ調整後に、上述した可動部材
35の引き下げを解除すれば、前記したように、スプリ
ング36の反発力によって、可動部材35は芯金部材3
3とともに上方に引き上げられ、それと連動してそれぞ
れの制動部材34a,34bの先端側が再び外側中空部
材の内周面に圧接されるため、再びロック状態となる。
After the length is adjusted, if the above-mentioned pulling down of the movable member 35 is released, the movable member 35 is moved by the repulsive force of the spring 36 as described above.
3 together with it, and in conjunction therewith, the distal ends of the respective braking members 34a, 34b are again pressed against the inner peripheral surface of the outer hollow member, and the locked state is established again.

【0021】以上のような構成からなる、足台ステー2
1を任意の位置で無段階に支持する伸縮自在ロック機構
30の実施形態によれば、足台ステー21の角度調整を
行う際は、片手で伸縮自在ロック機構30に設けられた
可動部材35を引き下げつつ、内側中空部材32を握っ
た状態のまま上下させればよく、可動部材35から手を
離せばそのままの位置で内側中空部材32を外側中空部
材31に対してロックさせることができる。従って、操
作を迅速に、かつ片手で行うことが可能であり、また、
所望の位置に正確にロックさせることができるため、車
椅子使用者の障害に応じて足台ステー21の角度調整を
行うことことができる。
The footrest stay 2 having the above configuration
According to the embodiment of the telescopic lock mechanism 30 that supports the stage 1 at an arbitrary position in a stepless manner, when adjusting the angle of the footrest 21, the movable member 35 provided on the telescopic lock mechanism 30 with one hand is used. It is sufficient to raise and lower the inner hollow member 32 while holding down the inner hollow member 32 while pulling it down, and the inner hollow member 32 can be locked to the outer hollow member 31 at the same position by releasing the hand from the movable member 35. Therefore, it is possible to perform the operation quickly and with one hand,
Since the lock can be accurately performed at the desired position, the angle of the footrest 21 can be adjusted according to the obstacle of the wheelchair user.

【0022】次に、図5には、請求項2記載の発明にか
かる、背部フレーム40を任意の位置で無段階に支持す
る伸縮自在ロック機構30の一実施例が示してある。本
体フレーム10の側面には、各々一対の前輪11及び後
輪12(図示せず)が軸着してあり、本体フレーム10
の上部後輪側に回動自在に枢支された背部フレーム40
が設けられており、前記背部フレーム40には、使用者
の背中を支えるパッドが設けられている。また、背部フ
レーム40の裏面側と本体フレーム10との間には、後
述する伸縮自在ロック機構30が配設されている。
Next, FIG. 5 shows an embodiment of the telescopic lock mechanism 30 for supporting the back frame 40 at an arbitrary position steplessly according to the second aspect of the present invention. A pair of front wheels 11 and rear wheels 12 (not shown) are mounted on the side surfaces of the main body frame 10, respectively.
Frame 40 pivotally supported on the upper rear wheel side of the vehicle
The back frame 40 is provided with a pad for supporting the back of the user. In addition, a telescopic lock mechanism 30 described below is disposed between the back side of the back frame 40 and the main body frame 10.

【0023】以上のように構成された、本体フレーム1
0、背部フレーム40及び伸縮自在ロック機構30との
関係を部分的に拡大して示した図6に基づいて詳細に説
明する。前記背部フレーム40の基端は、本体フレーム
10の上部後輪側に回動部42を介して傾動自在に支持
してある。外側中空部材31に移動自在に挿入された内
側中空部材32からなる伸縮自在ロック機構30は、背
部フレーム40の裏面と本体フレーム10の下部後輪側
との間に配設されている。内側中空部材32の端部は、
背部フレーム40に回動自在に設けられた断面コの字形
状の支持部材13にボルト・ナットを介して枢支されて
おり、また、外側中空部材の端部は、本体フレームの下
部後輪側に円柱状の取付支持部材14に固着されてい
る。
The main body frame 1 constructed as described above
0, the relationship between the back frame 40 and the telescopic lock mechanism 30 will be described in detail with reference to FIG. The base end of the back frame 40 is supported on the upper rear wheel side of the main body frame 10 via a rotating portion 42 so as to be tiltable. The telescopic lock mechanism 30 including the inner hollow member 32 movably inserted into the outer hollow member 31 is disposed between the back surface of the back frame 40 and the lower rear wheel side of the main body frame 10. The end of the inner hollow member 32 is
The support member 13 having a U-shaped cross section rotatably provided on the back frame 40 is pivotally supported via bolts and nuts. The end of the outer hollow member is connected to the lower rear wheel side of the main body frame. Is fixed to a columnar mounting support member 14.

【0024】続いて、背部フレーム40を支持する伸縮
自在ロック機構30の内部構造を図7に基づいて説明す
る。外側中空部材31及び内側中空部材32は、いずれ
も鋼材等から中空形状に形成されており、その外部表面
は、塗装、メッキ等などの表面処理が施されている。そ
して、内側中空部材32の内部中心且つ軸線方向には、
芯金部材33が移動自在に設けられている。内側中空部
材32には、図示するように、略T字形状に形成された
移動案内部材37が設けられている。移動案内部材37
の中心部には、芯金部材33が挿通される挿通孔33a
が形成されている。
Next, the internal structure of the telescopic lock mechanism 30 for supporting the back frame 40 will be described with reference to FIG. Each of the outer hollow member 31 and the inner hollow member 32 is formed in a hollow shape from a steel material or the like, and the outer surface thereof is subjected to a surface treatment such as painting or plating. And, in the center of the inner hollow member 32 and in the axial direction,
A core member 33 is movably provided. As shown, the inner hollow member 32 is provided with a movement guide member 37 formed in a substantially T-shape. Movement guide member 37
The insertion hole 33a through which the metal core member 33 is inserted
Are formed.

【0025】前記内側中空部材32の内部と芯金部材3
3との間には、合成樹脂等から棒形状に形成された可動
部材35が芯金部材33と一体的に移動するように設け
られている。可動部材35は、芯金部材33に対し、軸
線方向と直交する方向に挿通されている。また、内側中
空部材32に設けられた操作部39は、可動部材35の
両端が、内側中空部材32の互いに対向する部位に形成
された長孔32aから少し突出するように構成されてい
る。前記可動部材35と移動案内部材37の間には、請
求項に付勢部材として記載したスプリング36が設けら
れており、上記スプリング36の弾発力によって、常時
は可動部材35を押し上げる方向に付勢されている。
The inside of the inner hollow member 32 and the core member 3
A movable member 35 formed in a rod shape from a synthetic resin or the like is provided between the core member 33 and the movable member 35. The movable member 35 is inserted into the core member 33 in a direction perpendicular to the axial direction. The operating portion 39 provided on the inner hollow member 32 is configured such that both ends of the movable member 35 slightly protrude from long holes 32a formed at portions of the inner hollow member 32 facing each other. A spring 36 described as a biasing member is provided between the movable member 35 and the movement guide member 37. The spring 36 is always pressed in a direction to push up the movable member 35 by the elastic force of the spring 36. It is being rushed.

【0026】前記芯金部材33の端部には中心軸38が
設けられており、この中心軸38を中心に双方が回動
し、先端側が相対的に近接又は離間する一対の制動部材
34a,34bが設けられている。前記制動部材34
a,34bは、芯金部材33の軸線方向への移動に伴っ
て、先端部側が外側中空部材31の内周面側に当接又は
離間するように構成されている。即ち、一方の制動部材
34aは、図示するように、その中程で移動案内部材3
7の一方面に回動自在に枢支され、他方の制動部材34
bも、その中程で移動案内部材37の他方面に回動自在
に枢支されて、図面視略V字形状となるように配設され
ている。
A center shaft 38 is provided at an end of the core member 33. A pair of braking members 34a, 34b, both of which rotate around the center shaft 38 and whose front ends are relatively close to or separated from each other. 34b are provided. The braking member 34
The a and b are configured such that the distal end portion comes into contact with or separates from the inner peripheral surface side of the outer hollow member 31 as the core metal member 33 moves in the axial direction. That is, as shown in the figure, one of the braking members 34a
7 is rotatably supported on one surface, and the other braking member 34
b is also rotatably supported by the other surface of the movement guide member 37 in the middle thereof so as to be substantially V-shaped as viewed in the drawing.

【0027】従って、内側中空部材32の両長孔32a
から突出する可動部材35を操作しない状態おいては、
上記スプリング36の弾発力によって可動部材35が押
し上げられる方向に付勢されるので、可動部材35に一
体的に設けられた芯金部材33も上方に引き上げられ、
それと連動してそれぞれの制動部材34a,34bの先
端側が外側中空部材31の内面に当接され、内側中空部
材32と外側中空部材31は互いにロックされた状態と
なる(第7図参照)。
Therefore, both long holes 32a of the inner hollow member 32 are formed.
When the movable member 35 protruding from is not operated,
Since the movable member 35 is urged in a direction in which the movable member 35 is pushed up by the elastic force of the spring 36, the core metal member 33 provided integrally with the movable member 35 is also pulled upward,
In conjunction with this, the distal ends of the braking members 34a and 34b abut on the inner surface of the outer hollow member 31, and the inner hollow member 32 and the outer hollow member 31 are locked to each other (see FIG. 7).

【0028】一方、ロックを解除するためには、図8に
示すように、可動部材35を下方(図示下側)に引き下
げれば、スプリング36の弾発力に抗しながら芯金部材
33とともに引き下げられ、それと連動してそれぞれの
制動部材34a,34bの先端側が外側中空部材31の
内周面から離間され、非圧接状態となる。従って、外側
中空部材31に対して内側中空部材32は、長さ方向に
自由に移動できる状態となり、長さ調整を自在に行え
る。
On the other hand, in order to release the lock, as shown in FIG. 8, the movable member 35 is pulled downward (downward in the figure), and together with the core metal member 33 while resisting the elastic force of the spring 36. The brake members 34a and 34b are pulled down, and the leading ends of the respective brake members 34a and 34b are separated from the inner peripheral surface of the outer hollow member 31 to be in a non-pressed state. Therefore, the inner hollow member 32 can freely move in the length direction with respect to the outer hollow member 31, and the length can be freely adjusted.

【0029】そして、長さ調整後に、上述した可動部材
35の引き下げを解除すれば、スプリング36の反発力
によって、可動部材35は芯金部材33とともに上方に
引き上げられ、それと連動してそれぞれの制動部材34
a,34bの先端側が再び外側中空部材31の内周面に
圧接されるため、再びロック状態となる。
When the lowering of the movable member 35 is released after the length adjustment, the movable member 35 is pulled up together with the metal core member 33 by the repulsive force of the spring 36, and the respective braking members are interlocked with it. Member 34
Since the distal ends of the a and 34b are pressed against the inner peripheral surface of the outer hollow member 31 again, the locked state is established again.

【0030】以上のような構成からなる、背部フレーム
40を任意の位置で無段階に支持する伸縮自在ロック機
構30の実施形態によれば、背部フレーム40の角度調
整を行う際は、片手で可動部材35を引き下げつつ、内
側中空部材32を握った状態のまま上下させればよく、
また、可動部材35から手を離せばそのままの位置で内
側中空部材32を外側中空部材31に対してロックさせ
ることができる。従って、操作を迅速に、かつ片手で行
うことが可能であり、また、所望の位置に正確にロック
させることができるため、車椅子使用者の障害に応じて
背部フレーム40の角度調整を自在に行うことことがで
きる。
According to the embodiment of the telescopic lock mechanism 30 having the above-described configuration and supporting the back frame 40 at an arbitrary position in a stepless manner, when the angle of the back frame 40 is adjusted, the back frame 40 is movable with one hand. What is necessary is just to raise and lower while holding down the inner hollow member 32 while pulling down the member 35,
Further, if the hand is released from the movable member 35, the inner hollow member 32 can be locked to the outer hollow member 31 at the same position. Therefore, the operation can be performed quickly and with one hand, and the operation can be accurately locked at a desired position, so that the angle of the back frame 40 can be freely adjusted according to the obstacle of the wheelchair user. Can be.

【0031】なお、この伸縮自在ロック機構30の操作
については、介護者に簡単に遠隔操作できるように、例
えば、図示はしないが、背部フレーム40の把手部に配
設されたレバーをワイヤーを介して可動部材を操作する
ような周知技術を利用してロック解除を行ってもよい。
For the operation of the telescopic lock mechanism 30, for example, although not shown, a lever provided on a handle portion of the back frame 40 is connected to a wire through a wire so that the caregiver can easily perform remote control. The lock may be released by using a well-known technique such as operating the movable member.

【0032】次に、請求項3の発明は、図3に示すよう
に、車椅子100における本体フレーム10の少なくと
も一方の側部に配設された肘掛部50を任意の位置で無
段階に支持する伸縮自在ロック機構30に関するもので
あり、以下に、本体フレーム10、肘掛部50及び伸縮
自在ロック機構30との関係を、図3を部分的に拡大し
た図9及び図10に基づいて説明する。
Next, according to the third aspect of the present invention, as shown in FIG. 3, the armrest 50 provided on at least one side of the main body frame 10 in the wheelchair 100 is continuously supported at an arbitrary position. The present invention relates to the telescopic lock mechanism 30, and the relationship between the main body frame 10, the armrest 50, and the telescopic lock mechanism 30 will be described below with reference to FIGS.

【0033】前記肘掛部50は、伸縮自在ロック機構3
0を構成する内側中空部材32の端部に固着されてお
り、前記内側中空部材32を挿入する外側中空部材31
は、本体フレーム10の側部中央部に溶接によって固着
されている。外側中空部材31及び内側中空部材32
は、いずれも鋼材等から中空形状に形成されており、そ
の外部表面は、塗装、メッキ等などの表面処理が施され
ている。そして、内側中空部材32の内部中心且つ軸線
方向には、芯金部材33が移動自在に設けられている。
The armrest 50 is provided with a telescopic locking mechanism 3.
0, which is fixed to the end of the inner hollow member 32 constituting the inner hollow member 32 and into which the inner hollow member 32 is inserted.
Is fixed to the center of the side portion of the main body frame 10 by welding. Outer hollow member 31 and inner hollow member 32
Are all formed in a hollow shape from a steel material or the like, and the outer surface thereof is subjected to a surface treatment such as painting or plating. A core member 33 is movably provided in the center of the inner hollow member 32 and in the axial direction.

【0034】前記内側中空部材32には、図9に示すよ
うに、略T字形状に形成された移動案内部材37が設け
られている。移動案内部材37の中心部には、芯金部材
33が挿通される挿通孔33aが形成されている。
As shown in FIG. 9, the inner hollow member 32 is provided with a movement guide member 37 formed in a substantially T-shape. At the center of the movement guide member 37, an insertion hole 33a into which the cored bar member 33 is inserted is formed.

【0035】前記内側中空部材32の内部と芯金部材3
3との間には、合成樹脂等から棒形状に形成された可動
部材35が芯金部材33と一体的に移動するように設け
られている。可動部材35は、芯金部材33に対して軸
線方向と直交する方向に挿通されている。また、内側中
空部材32に設けられた操作部39は、可動部材35の
両端が、内側中空部材32の互いに対向する部位に形成
された長孔32aから少し突出するように構成されてい
る。
The inside of the inner hollow member 32 and the core member 3
A movable member 35 formed in a rod shape from a synthetic resin or the like is provided between the core member 33 and the movable member 35. The movable member 35 is inserted into the core member 33 in a direction perpendicular to the axial direction. The operating portion 39 provided on the inner hollow member 32 is configured such that both ends of the movable member 35 slightly protrude from long holes 32a formed at portions of the inner hollow member 32 facing each other.

【0036】前記可動部材35と移動案内部材37の間
には、請求項に付勢部材として記載したスプリング36
が設けられており、上記スプリング36の弾発力によっ
て、常時は可動部材35を押し上げる方向に付勢されて
いる。
A spring 36 is provided between the movable member 35 and the moving guide member 37 as an urging member.
The movable member 35 is normally urged in a direction to push up the movable member 35 by the elastic force of the spring 36.

【0037】前記芯金部材33の端部には中心軸38が
設けられており、この中心軸38を中心に双方が回動
し、先端側が相対的に近接又は離間する一対の制動部材
34a,34bが設けられている。前記制動部材34
a,34bは、芯金部材33の軸線方向への移動に伴っ
て先端部側が外側中空部材31の内面側に当接又は離間
するように構成されている。即ち、一方の制動部材34
aは、図示するように、その中程で移動案内部材37の
一方面に回動自在に枢支され、他方の制動部材34b
も、その中程で移動案内部材37の他方面に回動自在に
枢支されて、図面視略V字形状となるように設けられて
いる。
A center shaft 38 is provided at an end of the metal core member 33. A pair of braking members 34a and 34a, both of which rotate around the center shaft 38 and whose front ends are relatively close to or separated from each other. 34b are provided. The braking member 34
The a and b are configured such that the distal end portion comes into contact with or separates from the inner surface side of the outer hollow member 31 as the core metal member 33 moves in the axial direction. That is, one of the braking members 34
a is rotatably supported at one half of the movement guide member 37 in the middle, as shown in FIG.
Also, it is rotatably supported on the other surface of the movement guide member 37 in the middle thereof so as to be substantially V-shaped as viewed in the drawing.

【0038】従って、内側中空部材32の両長孔32か
ら突出する可動部材35を操作しない状態おいては、上
記スプリング36の弾発力によって可動部材35が押し
上げられる方向に付勢されるので、可動部35材に一体
的に設けられた芯金部材33も上方に引き上げられ、そ
れに連動してそれぞれの制動部材34a,34bの先端
側が外側中空部材31の内周面に当接され、内側中空部
材32と外側中空部材31は互いにロックされた状態と
なる(第9図参照)。
Therefore, when the movable member 35 protruding from both the long holes 32 of the inner hollow member 32 is not operated, the movable member 35 is urged by the elastic force of the spring 36 in a direction in which the movable member 35 is pushed up. The core metal member 33 integrally provided on the movable portion 35 is also pulled upward, and in conjunction therewith, the distal ends of the respective braking members 34a and 34b abut against the inner peripheral surface of the outer hollow member 31, and the inner hollow member is opened. The member 32 and the outer hollow member 31 are locked with each other (see FIG. 9).

【0039】一方、ロックを解除するためには、図10
に示すように、可動部材35を下方(図示下側)に引き
下げれば、スプリング36の弾発力に抗しながら、芯金
部材33とともに引き下げられ、それと連動してそれぞ
れの制動部材34a,34bの先端側が外側中空部材3
1の内周面から離間され、非圧接状態となる。従って、
外側中空部材31に対して内側中空部材32は、長さ方
向に自由に移動できる状態となり、長さ調整を自在に行
える。
On the other hand, in order to release the lock, FIG.
When the movable member 35 is pulled downward (downward in the figure) as shown in FIG. 7, the movable member 35 is pulled down together with the core member 33 while resisting the resiliency of the spring 36, and the braking members 34a, 34b Is the outer hollow member 3
1 is separated from the inner peripheral surface and is in a non-pressed state. Therefore,
The inner hollow member 32 can be freely moved in the length direction with respect to the outer hollow member 31, and the length can be adjusted freely.

【0040】そして、長さ調整後に、上述した可動部材
35の引き下げを解除すれば、前記したように、スプリ
ング36の反発力によって、可動部材35は芯金部材3
3とともに上方に引き上げられ、それと連動してそれぞ
れの制動部材34a,34bの先端側が再び外側中空部
材31の内周面に圧接されるため、再びロック状態とな
る。
After the length is adjusted, if the pulling down of the movable member 35 is released, as described above, the movable member 35 is moved by the repulsive force of the spring 36 to the core member 3.
3, and the leading ends of the respective braking members 34a and 34b are pressed against the inner peripheral surface of the outer hollow member 31 again in conjunction therewith, so that the locked state is established again.

【0041】以上のような構成からなる、肘掛部50を
任意の位置で無段階に支持する伸縮自在ロック機構30
の実施形態によれば、高さ調整を行う際は、片手で可動
部材35を引き下げつつ、内側中空部材32を握った状
態のまま上下させればよく、可動部材35から手を離せ
ばそのままの位置で内側中空部材32を外側中空部材3
1に対して確実にロックさせることができる。従って、
操作を迅速に、かつ片手で行うことが可能であり、ま
た、所望の位置に正確にロックさせることができるた
め、車椅子使用者の障害に応じて肘掛部の高さ調整を自
在に行うことことができる。
The telescopic lock mechanism 30 having the above-described structure and supporting the armrest 50 at any position in a stepless manner.
According to the embodiment, when performing the height adjustment, the movable member 35 may be pulled down with one hand and moved up and down while holding the inner hollow member 32. The inner hollow member 32 at the position
1 can be reliably locked. Therefore,
Since the operation can be performed quickly and with one hand and can be accurately locked at a desired position, the height of the armrest can be freely adjusted according to the obstacle of the wheelchair user. Can be.

【0042】次に、請求項4の発明は、車椅子における
背部フレーム40の上縁両端に設けられた把手部60を
任意の位置で無段階に支持する伸縮自在ロック機構30
に関するものである、以下に、背部フレーム40、把手
部60及び伸縮自在ロック機構30との関係を、図11
及び図12に従って詳細に説明する。
A fourth aspect of the present invention is a telescopic lock mechanism 30 for continuously supporting grips 60 provided at both ends of an upper edge of a back frame 40 in a wheelchair at arbitrary positions.
FIG. 11 shows the relationship between the back frame 40, the handle 60, and the telescopic lock mechanism 30.
This will be described in detail with reference to FIG.

【0043】前記把手部60は、伸縮自在ロック機構3
0を構成する内側中空部材32の端部に固着されてお
り、前記内側中空部材32は、背部フレーム40を構成
する外側中空部材31に移動自在に挿入されている。外
側中空部材31及び内側中空部材32は、いずれも鋼材
等から中空形状に形成されており、その外部表面は、塗
装、メッキ等などの表面処理が施されている。そして、
内側中空部材32の内部中心且つ軸線方向には、芯金部
材33が移動自在に設けられている。
The handle 60 is provided with a telescopic locking mechanism 3.
The inner hollow member 32 is fixed to an end of the inner hollow member 32 constituting the back frame 40 and is movably inserted into the outer hollow member 31 constituting the back frame 40. Each of the outer hollow member 31 and the inner hollow member 32 is formed in a hollow shape from a steel material or the like, and the outer surface thereof is subjected to a surface treatment such as painting or plating. And
A core metal member 33 is movably provided in the center of the inner hollow member 32 and in the axial direction.

【0044】前記内側中空部材32には、図11に示す
ように、略T字形状に形成された移動案内部材37が設
けられている。移動案内部材37の中心部には、芯金部
材33が挿通される挿通孔33aが形成されている。
As shown in FIG. 11, the inner hollow member 32 is provided with a movement guide member 37 formed in a substantially T-shape. At the center of the movement guide member 37, an insertion hole 33a into which the cored bar member 33 is inserted is formed.

【0045】前記内側中空部材32の内部と芯金部材3
3との間には、合成樹脂等から棒形状に形成された可動
部材35が芯金部材33と一体的に移動するように設け
られている。可動部材35は、芯金部材33に対し、軸
線方向と直交する方向に挿通して固着されている。ま
た、内側中空部材32に設けられた操作部39は、可動
部材35の両端が、内側中空部材32の互いに対向する
部位に形成された長孔33aから少し突出するように構
成されている。
The inside of the inner hollow member 32 and the core member 3
A movable member 35 formed in a rod shape from a synthetic resin or the like is provided between the core member 33 and the movable member 35. The movable member 35 is inserted into and fixed to the metal core member 33 in a direction perpendicular to the axial direction. In addition, the operation section 39 provided on the inner hollow member 32 is configured such that both ends of the movable member 35 slightly protrude from the elongated holes 33a formed at portions of the inner hollow member 32 facing each other.

【0046】前記可動部材35と移動案内部材37の間
には、付勢部材としてのスプリング36が設けられてお
り、該スプリング36の弾発力によって、常時は可動部
材35を押し上げる方向に付勢されている。
A spring 36 as an urging member is provided between the movable member 35 and the moving guide member 37. The spring 36 is always urged in a direction to push up the movable member 35 by the elastic force of the spring 36. Have been.

【0047】前記芯金部材33の端部には中心軸38が
設けられており、この中心軸38を中心に双方が回動
し、先端側が相対的に近接又は離間する一対の制動部材
34a,34bが設けられている。前記制動部材34
a,34bは、芯金部材33の軸線方向への移動に伴っ
て、先端部側が外側中空部材31の内面側に当接又は離
間するように構成されている。即ち、一方の制動部材3
4aは、その中程で移動案内部材37の一方面に回動自
在に枢支され、他方の制動部材34bも、その中程で移
動案内部材37の他方面に回動自在に枢支されて、図面
視略V字形状となるように枢着されている。
A center shaft 38 is provided at an end of the metal core member 33. A pair of braking members 34a and 34a, both of which rotate around the center shaft 38 and whose front ends are relatively close to or separated from each other. 34b are provided. The braking member 34
The a and b are configured such that the distal end portion comes into contact with or separates from the inner surface side of the outer hollow member 31 as the core metal member 33 moves in the axial direction. That is, one of the braking members 3
4a is rotatably supported on one surface of the movement guide member 37 in the middle thereof, and the other braking member 34b is also rotatably supported on the other surface of the movement guide member 37 in the middle thereof. , So as to be substantially V-shaped in the drawing.

【0048】従って、内側中空部材32の両長孔33a
から突出する可動部材35を操作しない状態おいては、
該スプリング36の弾発力によって可動部材35が押し
上げられる方向に付勢されるので、可動部材35に一体
的に設けられた芯金部材33も上方に引き上げられ、そ
れに連動してそれぞれの制動部材34a,34bの先端
側が外側中空部材31の内周面に当接され、内側中空部
材32と外側中空部材31は互いにロックされた状態と
なる(第11図参照)。
Therefore, both long holes 33a of the inner hollow member 32 are formed.
When the movable member 35 protruding from is not operated,
Since the movable member 35 is urged in the direction in which the movable member 35 is pushed up by the resilience of the spring 36, the core metal member 33 provided integrally with the movable member 35 is also pulled upward, and the respective braking members The distal ends of 34a and 34b are in contact with the inner peripheral surface of the outer hollow member 31, and the inner hollow member 32 and the outer hollow member 31 are locked to each other (see FIG. 11).

【0049】一方、ロックを解除するためには、図12
に示すように、可動部材35を下方(図示下側)に引き
下げれば、スプリング36の弾発力に抗しながら、芯金
部材33とともに引き下げられ、それと連動してそれぞ
れの制動部材34a,34bの先端側が外側中空部材3
1の内周面から離間され、非圧接状態となる。従って、
外側中空部材31に対して内側中空部材32は、長さ方
向に自由に移動できる状態となり、長さ調整を自在に行
える。
On the other hand, in order to release the lock, FIG.
When the movable member 35 is pulled downward (downward in the figure) as shown in FIG. 7, the movable member 35 is pulled down together with the core member 33 while resisting the resiliency of the spring 36, and the braking members 34a, 34b Is the outer hollow member 3
1 is separated from the inner peripheral surface and is in a non-pressed state. Therefore,
The inner hollow member 32 can be freely moved in the length direction with respect to the outer hollow member 31, and the length can be adjusted freely.

【0050】そして、長さ調整後に、上述した可動部材
35の引き下げを解除すれば、前記したように、スプリ
ング36の反発力によって、可動部材35は、芯金部材
33とともに上方に引き上げられ、それと連動してそれ
ぞれの制動部材34a,34bの先端側が再び外側中空
部材31の内周面に圧接されるため、再びロック状態と
なる。
When the lowering of the movable member 35 is released after the length adjustment, as described above, the movable member 35 is pulled up together with the cored bar member 33 by the repulsive force of the spring 36, and as described above. In conjunction with this, the leading ends of the respective braking members 34a and 34b are again pressed against the inner peripheral surface of the outer hollow member 31, so that the locked state is established again.

【0051】以上のような構成からなる、把手部60を
任意の位置で無段階に支持する伸縮自在ロック機構30
の実施形態によれば、把手部60の高さ調整を行う際
は、片手で可動部材35を引き下げつつ、内側中空部材
32を握った状態のまま上下させればよく、可動部材3
5から手を離せばそのままの位置で内側中空部材32を
外側中空部材31に対してロックさせることができる。
従って、操作を迅速に、かつ片手で行うことが可能であ
り、また、所望の位置に正確にロックさせることができ
るため、介護者の使用状態に応じて把手部60の高さ調
整を自在に行うことことができる。
The extendable lock mechanism 30 having the above-described structure and supporting the handle portion 60 at an arbitrary position in a stepless manner.
According to the embodiment, when the height of the handle portion 60 is adjusted, the movable member 35 may be pulled down with one hand and moved up and down while holding the inner hollow member 32.
By releasing the hand from 5, the inner hollow member 32 can be locked to the outer hollow member 31 at the same position.
Therefore, the operation can be performed quickly and with one hand, and since the lock can be accurately performed at a desired position, the height of the handle portion 60 can be freely adjusted according to the use state of the caregiver. Can be done.

【0052】次に、請求項5の発明は、車椅子における
足台ステー21の先端に設けられた足載せ部23を任意
の位置で無段階に支持する伸縮自在ロック機構30に関
するものである、以下に、足台ステー21、足載せ部2
3及び伸縮自在ロック機構30との関係を、図13及び
図14に従って詳細に説明する。
Next, a fifth aspect of the present invention relates to a telescopic lock mechanism 30 for continuously supporting a footrest 23 provided at the tip of a footrest 21 in a wheelchair at an arbitrary position. , Footrest stay 21, footrest 2
The relationship between the lock 3 and the telescopic lock mechanism 30 will be described in detail with reference to FIGS.

【0053】前記足載せ部23は、伸縮自在ロック機構
30を構成する内側中空部材32の先端部に回動自在に
設けられており、前記内側中空部材32は、足台ステー
21を構成する外側中空部材31に移動自在に挿入され
ている。外側中空部材31及び内側中空部材32は、い
ずれも鋼材等から中空形状に形成されており、その外部
表面は、塗装、メッキ等などの表面処理が施されてい
る。そして、内側中空部材32の内部中心且つ軸線方向
には、芯金部材33が移動自在に設けられている。
The foot rest 23 is rotatably provided at the tip of an inner hollow member 32 constituting the telescopic locking mechanism 30, and the inner hollow member 32 is provided on the outer side constituting the foot stay 21. It is movably inserted into the hollow member 31. Each of the outer hollow member 31 and the inner hollow member 32 is formed in a hollow shape from a steel material or the like, and the outer surface thereof is subjected to a surface treatment such as painting or plating. A core member 33 is movably provided in the center of the inner hollow member 32 and in the axial direction.

【0054】前記内側中空部材32には、図13に示す
ように、略T字形状に形成された移動案内部材37が設
けられている。移動案内部材37の中心部には、芯金部
材33が挿通される挿通孔33aが形成されている。
As shown in FIG. 13, the inner hollow member 32 is provided with a movement guide member 37 formed in a substantially T-shape. At the center of the movement guide member 37, an insertion hole 33a into which the cored bar member 33 is inserted is formed.

【0055】前記内側中空部材32の内部と芯金部材3
3との間には、合成樹脂等から棒形状に形成された可動
部材35が芯金部材33と一体的に移動するように設け
られている。可動部材35は、芯金部材33に対し、軸
線方向と直交する方向に挿通して固着されている。ま
た、内側中空部材32に設けられた操作部39は、可動
部材35の両端が、内側中空部材32の互いに対向する
部位に形成された長孔33aから少し突出するように構
成されている。
The inside of the inner hollow member 32 and the core member 3
A movable member 35 formed in a rod shape from a synthetic resin or the like is provided between the core member 33 and the movable member 35. The movable member 35 is inserted into and fixed to the metal core member 33 in a direction perpendicular to the axial direction. In addition, the operation section 39 provided on the inner hollow member 32 is configured such that both ends of the movable member 35 slightly protrude from the elongated holes 33a formed at portions of the inner hollow member 32 facing each other.

【0056】前記可動部材35と移動案内部材37の間
には、付勢部材としてのスプリング36が設けられてお
り、該スプリング36の弾発力によって、常時は可動部
材35を押し上げる方向に付勢されている。
A spring 36 as an urging member is provided between the movable member 35 and the movement guide member 37. The spring 36 is always urged in a direction to push up the movable member 35 by the elastic force of the spring 36. Have been.

【0057】前記芯金部材33の端部には中心軸38が
設けられており、この中心軸38を中心に双方が回動
し、先端側が相対的に近接又は離間する一対の制動部材
34a,34bが設けられている。前記制動部材34
a,34bは、芯金部材33の軸線方向への移動に伴っ
て、先端部側が外側中空部材31の内面側に当接又は離
間するように構成されている。即ち、一方の制動部材3
4aは、その中程で移動案内部材37の一方面に回動自
在に枢支され、他方の制動部材34bも、その中程で移
動案内部材37の他方面に回動自在に枢支されて、図面
視略V字形状となるように枢着されている。
A center shaft 38 is provided at an end of the metal core member 33. A pair of braking members 34a and 34a, both of which rotate around the center shaft 38 and whose front ends are relatively close to or separated from each other. 34b are provided. The braking member 34
The a and b are configured such that the distal end portion comes into contact with or separates from the inner surface side of the outer hollow member 31 as the core metal member 33 moves in the axial direction. That is, one of the braking members 3
4a is rotatably supported on one surface of the movement guide member 37 in the middle thereof, and the other braking member 34b is also rotatably supported on the other surface of the movement guide member 37 in the middle thereof. , So as to be substantially V-shaped in the drawing.

【0058】従って、内側中空部材32の両長孔33a
から突出する可動部材35を操作しない状態おいては、
該スプリング36の弾発力によって可動部材35が押し
上げられる方向に付勢されるので、可動部材35に一体
的に設けられた芯金部材33も上方に引き上げられ、そ
れに連動してそれぞれの制動部材34a,34bの先端
側が外側中空部材31の内周面に当接され、内側中空部
材32と外側中空部材31は互いにロックされた状態と
なる(第13図参照)。
Therefore, both long holes 33a of the inner hollow member 32 are formed.
When the movable member 35 protruding from is not operated,
Since the movable member 35 is urged in the direction in which the movable member 35 is pushed up by the resilience of the spring 36, the core metal member 33 provided integrally with the movable member 35 is also pulled upward, and the respective braking members The distal ends of 34a and 34b abut against the inner peripheral surface of the outer hollow member 31, and the inner hollow member 32 and the outer hollow member 31 are locked to each other (see FIG. 13).

【0059】一方、ロックを解除するためには、図14
に示すように、可動部材35を下方(図示下側)に引き
下げれば、スプリング36の弾発力に抗しながら、芯金
部材33とともに引き下げられ、それと連動してそれぞ
れの制動部材34a,34bの先端側が外側中空部材3
1の内周面から離間され、非圧接状態となる。従って、
外側中空部材31に対して内側中空部材32は、長さ方
向に自由に移動できる状態となり、長さ調整を自在に行
える。
On the other hand, in order to release the lock, FIG.
When the movable member 35 is pulled downward (downward in the figure) as shown in FIG. 7, the movable member 35 is pulled down together with the core member 33 while resisting the resiliency of the spring 36, and the braking members 34a, 34b Is the outer hollow member 3
1 is separated from the inner peripheral surface and is in a non-pressed state. Therefore,
The inner hollow member 32 can be freely moved in the length direction with respect to the outer hollow member 31, and the length can be adjusted freely.

【0060】そして、長さ調整後に、上述した可動部材
35の引き下げを解除すれば、前記したように、スプリ
ング36の反発力によって、可動部材35は、芯金部材
33とともに上方に引き上げられ、それと連動してそれ
ぞれの制動部材34a,34bの先端側が再び外側中空
部材31の内周面に圧接されるため、再びロック状態と
なる。
After the length is adjusted, if the above-described lowering of the movable member 35 is released, the movable member 35 is pulled upward together with the cored bar member 33 by the repulsive force of the spring 36, as described above. In conjunction with this, the leading ends of the respective braking members 34a and 34b are again pressed against the inner peripheral surface of the outer hollow member 31, so that the locked state is established again.

【0061】以上のような構成からなる、足載せ台23
を任意の位置で無段階に支持する伸縮自在ロック機構3
0の実施形態によれば、足載せ部23の長さ調整を行う
際は、片手で可動部材35を引き下げつつ、内側中空部
材32を握った状態のまま上下させればよく、可動部材
35から手を離せばそのままの位置で内側中空部材32
を外側中空部材31に対してロックさせることができ
る。従って、操作を迅速に、かつ片手で行うことが可能
であり、また、所望の位置に正確にロックさせることが
できるため、介護者の使用状態に応じて足載せ部23の
長さ調整を自在に行うことことができる。
The footrest 23 having the above configuration is
Telescopic locking mechanism 3 that supports the steplessly at any position
According to the zeroth embodiment, when adjusting the length of the footrest portion 23, the movable member 35 may be pulled down with one hand and moved up and down while holding the inner hollow member 32. Release the inner hollow member 32
Can be locked to the outer hollow member 31. Therefore, the operation can be performed quickly and with one hand, and can be accurately locked at a desired position, so that the length of the footrest 23 can be freely adjusted according to the use state of the caregiver. Can be done.

【0062】ところで、本各発明は、上述した実施例に
限定されるものではなく、本発明の目的を達成できる範
囲内での改良、変形等は本発明に含まれるものである。
Incidentally, the present invention is not limited to the above-described embodiments, but includes improvements, modifications, etc. within a range that can achieve the object of the present invention.

【0063】[0063]

【発明の効果】以上のように、本各発明にかかる車椅子
における伸縮自在ロック機構によれば、片手で可動部材
を引き下げつつ、内側中空部材を握った状態まま上下さ
せるだけで容易に長さ調整を行うことができ、また、可
動部材から手を離せばそのままの位置で内側中空部材を
外側中空部材に確実にロックさせることができるため、
操作を迅速に、かつ片手で行うことができ、しかも、車
椅子の使用者及び介護者の使用状態に応じて所望の位置
に正確にロックさせることができるという優れた効果を
奏することができる。
As described above, according to the telescopic locking mechanism in the wheelchair according to the present invention, the length can be easily adjusted by simply moving the movable member down with one hand and raising and lowering while holding the inner hollow member. It is also possible to securely lock the inner hollow member to the outer hollow member at the same position if you release your hand from the movable member,
It is possible to achieve an excellent effect that the operation can be performed quickly and with one hand, and can be accurately locked at a desired position according to the use state of the wheelchair user and the caregiver.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明にかかる足台ステーを任意の位置で無段
階に支持する伸縮自在ロック機構の実施例を示す斜視図
である。
FIG. 1 is a perspective view showing an embodiment of a telescopic locking mechanism for supporting a foot stay in an arbitrary position steplessly according to the present invention.

【図2】図1に示す足台ステーと伸縮自在ロック機構と
の関係を示す一部拡大斜視図である。
FIG. 2 is a partially enlarged perspective view showing a relationship between a footrest stay and a telescopic lock mechanism shown in FIG. 1;

【図3】図2に示す伸縮自在ロック機構の非ロック状態
を示す一部拡大断面図である。
FIG. 3 is a partially enlarged sectional view showing a non-locked state of the telescopic lock mechanism shown in FIG. 2;

【図4】図3に示す伸縮自在ロック機構のロック状態を
示す断面図である。
FIG. 4 is a sectional view showing a locked state of the telescopic lock mechanism shown in FIG. 3;

【図5】本発明にかかる背部フレームを任意の位置で無
段階に支持する伸縮自在ロック機構の実施例を示す斜視
図である。
FIG. 5 is a perspective view showing an embodiment of a telescopic locking mechanism for supporting a back frame at an arbitrary position in a stepless manner according to the present invention.

【図6】本発明にかかる背部フレームを任意の位置で無
段階に支持する伸縮自在ロック機構の実施例を示す後方
斜視図である。
FIG. 6 is a rear perspective view showing an embodiment of a telescopic lock mechanism for supporting a back frame at an arbitrary position in a stepless manner according to the present invention.

【図7】図6に示す伸縮自在ロック機構の非ロック状態
を示す一部拡大断面図である。
FIG. 7 is a partially enlarged sectional view showing a non-locked state of the telescopic lock mechanism shown in FIG. 6;

【図8】図7に示す伸縮自在ロック機構のロック状態を
示す断面図である。
FIG. 8 is a sectional view showing a locked state of the telescopic lock mechanism shown in FIG. 7;

【図9】本発明にかかる肘掛部を任意の位置で無段階に
支持する伸縮自在ロック機構の実施例を示す一部切欠断
面図である。
FIG. 9 is a partially cutaway sectional view showing an embodiment of a telescopic lock mechanism for supporting an armrest at an arbitrary position in a stepless manner according to the present invention.

【図10】本発明にかかる肘掛部を任意の位置で無段階
に支持する伸縮自在ロック機構の実施例を示す一部切欠
断面図である。
FIG. 10 is a partially cutaway sectional view showing an embodiment of a telescopic locking mechanism for supporting an armrest at an arbitrary position steplessly according to the present invention.

【図11】本発明にかかる把手部を任意の位置で無段階
に支持する伸縮自在ロック機構の実施例を示す一部切欠
断面図である。
FIG. 11 is a partially cutaway sectional view showing an embodiment of a telescopic locking mechanism for supporting a handle portion at an arbitrary position in a stepless manner according to the present invention.

【図12】本発明にかかる把手部を任意の位置で無段階
に支持する伸縮自在ロック機構の実施例を示す一部切欠
断面図である。
FIG. 12 is a partially cutaway sectional view showing an embodiment of a telescopic lock mechanism for supporting a handle portion at an arbitrary position in a stepless manner according to the present invention.

【図13】本発明にかかる足載せ部を任意の位置で無段
階に支持する伸縮自在ロック機構の実施例を示す一部切
欠断面図である。
FIG. 13 is a partially cutaway sectional view showing an embodiment of a telescopic locking mechanism for supporting a footrest at an arbitrary position steplessly according to the present invention.

【図14】本発明にかかる足載せ部を任意の位置で無段
階に支持する伸縮自在ロック機構の実施例を示す一部切
欠断面図である。
FIG. 14 is a partially cutaway sectional view showing an embodiment of a telescopic lock mechanism for supporting a footrest at an arbitrary position steplessly according to the present invention.

【符号の説明】[Explanation of symbols]

10 本体フレーム 21 足台ステー 23 足載せ部 30 伸縮自在ロック機構 31 外側中空部材 32 内側中空部材 32a 長孔 33 芯金部材 33a 挿通孔 34a 制動部材 34b 制動部材 35 可動部材 36 付勢部材 37 移動案内部材 38 中心軸 39 操作部 40 背部フレーム 50 肘掛部 60 把手部 100 車椅子 DESCRIPTION OF SYMBOLS 10 Main body frame 21 Footrest 23 Foot rest 30 Telescopic locking mechanism 31 Outer hollow member 32 Inner hollow member 32a Long hole 33 Core metal member 33a Insertion hole 34a Braking member 34b Braking member 35 Movable member 36 Biasing member 37 Moving guide Member 38 Central axis 39 Operation part 40 Back frame 50 Armrest part 60 Handle part 100 Wheelchair

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 一端が車椅子の本体フレームに設けら
れ、他端が前記本体フレームに回動自在に設けられた足
台ステーに設けられるとともに、前記足台ステーを任意
の位置で無段階に支持する伸縮自在ロック機構におい
て、 外側中空部材と、前記外側中空部材に移動自在に挿入さ
れた内側中空部材と、 前記内側中空部材の内部中心に設けられ且つ軸線方向に
移動自在に設けられた芯金部材と、 前記芯金部材に設けられ且つ前記芯金部材とともに軸線
方向に移動する可動部材と、 前記芯金部材に設けられた中心軸を中心に双方が回動す
るとともに、前記可動部材の移動に伴って、先端部側が
外側中空部材の内周面に当接又は離間する一対の制動部
材と、 前記制動部材を常時は外側中空部材の内周面に当接させ
る方向に回動させるべく前記可動部材を付勢する付勢部
材と、 前記内側中空部材に設けられ前記可動部材を操作する操
作部とを具備したことを特徴とする伸縮自在ロック機
構。
1. One end is provided on a body frame of a wheelchair, and the other end is provided on a foot stay which is rotatably provided on the body frame, and supports the foot stay in an arbitrary position in a stepless manner. An outer hollow member, an inner hollow member movably inserted into the outer hollow member, and a core bar provided at the inner center of the inner hollow member and movably in the axial direction. A member, a movable member provided on the cored member and moving in the axial direction together with the cored member, and both rotating about a central axis provided on the cored member, and moving the movable member. With the above, a pair of braking members whose leading end portions are in contact with or separated from the inner peripheral surface of the outer hollow member, and the braking member is rotated in a direction in which the braking member is always in contact with the inner peripheral surface of the outer hollow member. Movable Telescoping locking mechanism, wherein a biasing member for biasing the timber, by comprising an operation unit for operating the movable member provided in the inner hollow member.
【請求項2】 一端が車椅子の本体フレームに設けら
れ、他端が前記本体フレームに回動自在に設けられた背
部フレームに設けられるとともに、前記背部フレームを
任意の位置で無段階に支持する伸縮自在ロック機構にお
いて、 外側中空部材と、前記外側中空部材に移動自在に挿入さ
れた内側中空部材と、 前記内側中空部材の内部中心に設けられ且つ軸線方向に
移動自在に設けられた芯金部材と、 前記芯金部材に設けられ且つ前記芯金部材とともに軸線
方向に移動する可動部材と、 前記芯金部材に設けられた中心軸を中心に双方が回動す
るとともに、前記可動部材の移動に伴って、先端部側が
外側中空部材の内周面に当接又は離間する一対の制動部
材と、 前記制動部材を常時は外側中空部材の内周面に当接させ
る方向に回動させるべく前記可動部材を付勢する付勢部
材と、 前記内側中空部材に設けられ前記可動部材を操作する操
作部とを具備したことを特徴とする伸縮自在ロック機
構。
2. A telescopic device having one end provided on a body frame of a wheelchair and the other end provided on a back frame rotatably provided on the body frame, and supporting the back frame at an arbitrary position in a stepless manner. In the universal lock mechanism, an outer hollow member, an inner hollow member movably inserted into the outer hollow member, and a core metal member provided at an inner center of the inner hollow member and provided movably in an axial direction. A movable member provided on the metal core member and moving in the axial direction together with the metal core member; and both of the rotary members are rotated around a central axis provided on the metal core member, and the movable member moves with the movable member. A pair of braking members whose leading end portions abut or separate from the inner peripheral surface of the outer hollow member, and a pair of braking members for rotating the braking member in a direction to normally contact the inner peripheral surface of the outer hollow member. An urging member for urging the moving member, retractable locking mechanism, characterized by comprising an operation unit for operating the movable member provided in the inner hollow member.
【請求項3】 車椅子における本体フレームの少なくと
も一方の側部に配設された肘掛部を任意の位置で無段階
に支持する伸縮自在ロック機構において、 前記肘掛部が設けられた内側中空部材と、前記本体フレ
ームに設けられ前記内側中空部材が移動自在に挿入され
た外側中空部材と、 前記内側中空部材の内部中心に設けられ且つ軸線方向に
移動自在に設けられた芯金部材と、 前記芯金部材に設けられた中心軸を中心に双方が回動す
るとともに、前記芯金部材の軸線方向への移動に伴っ
て、先端部側が外側中空部材の内周面に当接又は離間す
る一対の制動部材と、 前記芯金部材に設けられ且つ前記芯金部材とともに軸線
方向に移動する可動部材と、 前記制動部材を常時は外側中空部材の内周面に当接させ
る方向に回動させるべく前記可動部材を付勢する付勢部
材と、前記内側中空部材に設けられ前記可動部材を操作
する操作部とを具備したことを特徴を具備したことを特
徴とする伸縮自在ロック機構。
3. A telescopic locking mechanism for continuously supporting an armrest provided at least on one side of a body frame of a wheelchair at an arbitrary position, wherein an inner hollow member provided with the armrest; An outer hollow member provided in the main body frame and into which the inner hollow member is movably inserted; a core metal member provided at an inner center of the inner hollow member and provided movably in an axial direction; A pair of brakes, both of which rotate around a central axis provided on the member, and whose leading end portions abut or separate from the inner peripheral surface of the outer hollow member as the cored bar member moves in the axial direction. A movable member provided on the core metal member and moving in the axial direction together with the core metal member; and a movable member for rotating the braking member in a direction in which the braking member is always brought into contact with the inner peripheral surface of the outer hollow member. Department An urging member for urging the telescopic locking mechanism, characterized by comprising a characterized by including an operation unit for operating the movable member provided in the inner hollow member.
【請求項4】車椅子における背部フレームの上縁両端に
設けられた把手部を任意の位置で無段階に支持する伸縮
自在ロック機構において、 前記把手部が設けられた内側中空部材と、前記背部フレ
ームを構成するとともに前記内側中空部材が移動自在に
挿入された外側中空部材と、 前記内側中空部材の内部中心に設けられ且つ軸線方向に
移動自在に設けられた芯金部材と、 前記芯金部材に設けられた中心軸を中心に双方が回動す
るとともに、前記芯金部材の軸線方向への移動に伴っ
て、先端部側が外側中空部材の内周面に当接又は離間す
る一対の制動部材と、 前記芯金部材に設けられ且つ前記芯金部材とともに軸線
方向に移動する可動部材と、 前記制動部材を常時は外側中空部材の内周面に当接させ
る方向に回動させるべく前記可動部材を付勢する付勢部
材と、前記内側中空部材に設けられ前記可動部材を操作
する操作部とを具備したことを特徴を具備したことを特
徴とする伸縮自在ロック機構。
4. A telescopic locking mechanism for continuously supporting grips provided at both ends of an upper edge of a back frame in a wheelchair at an arbitrary position, wherein: an inner hollow member provided with the grips; and the back frame. And an outer hollow member into which the inner hollow member is movably inserted, a core metal member provided at an inner center of the inner hollow member and movably provided in the axial direction, and A pair of braking members, both of which rotate around the provided central axis, along with the axial movement of the metal core member, the distal end portions of which contact or separate from the inner peripheral surface of the outer hollow member. A movable member provided on the metal core member and moving in the axial direction together with the metal core member; and the movable member to rotate the braking member in a direction in which the braking member always comes into contact with the inner peripheral surface of the outer hollow member. A biasing member for energizing, telescoping locking mechanism, characterized by comprising a characterized by including an operation unit for operating the movable member provided in the inner hollow member.
【請求項5】車椅子における足台ステーの先端に設けら
れた足載せ部を任意の位置で無段階に支持する伸縮自在
ロック機構において、 前記足載せ部が設けられた内側中空部材と、前記背部フ
レームを構成するとともに前記内側中空部材が移動自在
に挿入された外側中空部材と、 前記内側中空部材の内部中心に設けられ且つ軸線方向に
移動自在に設けられた芯金部材と、 前記芯金部材に設けられた中心軸を中心に双方が回動す
るとともに、前記芯金部材の軸線方向への移動に伴っ
て、先端部側が外側中空部材の内周面に当接又は離間す
る一対の制動部材と、 前記芯金部材に設けられ且つ前記芯金部材とともに軸線
方向に移動する可動部材と、 前記制動部材を常時は外側中空部材の内周面に当接させ
る方向に回動させるべく前記可動部材を付勢する付勢部
材と、前記内側中空部材に設けられ前記可動部材を操作
する操作部とを具備したことを特徴を具備したことを特
徴とする伸縮自在ロック機構。
5. A telescopic lock mechanism for continuously supporting a footrest provided at a tip of a footrest in a wheelchair at an arbitrary position, wherein the inner hollow member provided with the footrest and the back part. An outer hollow member that constitutes a frame and into which the inner hollow member is movably inserted; a core metal member that is provided at an inner center of the inner hollow member and that is movably provided in the axial direction; A pair of braking members, both of which rotate around a central axis provided in the shaft member and whose leading end portions abut or separate from the inner peripheral surface of the outer hollow member as the core metal member moves in the axial direction. A movable member provided on the core member and moving in the axial direction together with the core member; and the movable member for rotating the braking member in a direction in which the braking member is always brought into contact with the inner peripheral surface of the outer hollow member. With Biasing member and telescopic lock mechanism, characterized by comprising a characterized by including an operation unit for operating the movable member provided in the inner hollow member.
【請求項6】 前記操作部を、内側中空部材の互いに対
向する部位に軸線方向に長い長孔を形成し、前記長孔か
ら可動部材を突出させた構成としたことを特徴とする請
求項1乃至5のいずれか一項に記載の伸縮自在ロック機
構。
6. The operation unit according to claim 1, wherein an elongated hole is formed in an axial direction at portions of the inner hollow member opposed to each other, and a movable member protrudes from the elongated hole. The telescopic lock mechanism according to any one of claims 1 to 5.
JP11224918A 1999-08-09 1999-08-09 Telescopic locking mechanism for use with wheelchair Pending JP2001046441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11224918A JP2001046441A (en) 1999-08-09 1999-08-09 Telescopic locking mechanism for use with wheelchair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11224918A JP2001046441A (en) 1999-08-09 1999-08-09 Telescopic locking mechanism for use with wheelchair

Publications (1)

Publication Number Publication Date
JP2001046441A true JP2001046441A (en) 2001-02-20

Family

ID=16821216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11224918A Pending JP2001046441A (en) 1999-08-09 1999-08-09 Telescopic locking mechanism for use with wheelchair

Country Status (1)

Country Link
JP (1) JP2001046441A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008093411A (en) * 2006-09-13 2008-04-24 Matsunaga Seisakusho:Kk Footrest mechanism for wheelchair
JP2019180984A (en) * 2018-04-13 2019-10-24 株式会社カワムラサイクル Movement support tool
EP3437614A4 (en) * 2016-03-31 2020-04-15 Young Bae You Footrest device and safety device for wheelchair

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008093411A (en) * 2006-09-13 2008-04-24 Matsunaga Seisakusho:Kk Footrest mechanism for wheelchair
EP3437614A4 (en) * 2016-03-31 2020-04-15 Young Bae You Footrest device and safety device for wheelchair
JP2019180984A (en) * 2018-04-13 2019-10-24 株式会社カワムラサイクル Movement support tool
JP7085882B2 (en) 2018-04-13 2022-06-17 株式会社カワムラサイクル Mobility support equipment
JP2022118043A (en) * 2018-04-13 2022-08-12 株式会社カワムラサイクル Movement support tool
JP7397912B2 (en) 2018-04-13 2023-12-13 株式会社カワムラサイクル mobility aids

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