JP3085053U - Wheelchair drive - Google Patents
Wheelchair driveInfo
- Publication number
- JP3085053U JP3085053U JP2001007356U JP2001007356U JP3085053U JP 3085053 U JP3085053 U JP 3085053U JP 2001007356 U JP2001007356 U JP 2001007356U JP 2001007356 U JP2001007356 U JP 2001007356U JP 3085053 U JP3085053 U JP 3085053U
- Authority
- JP
- Japan
- Prior art keywords
- rod
- lug
- wheelchair
- pivotally supported
- tread surface
- 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.)
- Expired - Fee Related
Links
Landscapes
- Handcart (AREA)
Abstract
(57)【要約】
【課題】 車椅子車体の両側に一対の操作桿を枢支し、
駆動輪の車軸に枢支した揺動杆先端位に駆動輪の踏面に
対向して月形爪を枢支し、操作桿と連動して揺動杆を駆
動輪回転側へ揺動し、同爪を駆動輪の踏面へ押圧して駆
動することとした車椅子駆動装置を提供しようとするも
のである。
【解決手段】 車椅子1の車体2両側に駆動輪4を軸支
する車軸3に揺動杆6の基端を枢支し、駆動輪4の踏面
5外囲へ凸設して月形爪7の基端側を爪ピン9により枢
支するため、同爪に形設した半月形の摩擦面8を同踏面
の回転方向へ向けて配設し、車体両側に凸設したブラケ
ット10に、操作桿11を枢支し、該操作桿のクランク
ピン12を揺動杆6中途に設けた溝孔13に滑合し、操
作桿11の中途にブレーキレバー14を枢支して月形爪
7との間に、ワイヤーガイド15に挿通した操作ワイヤ
ー16を連結し、同ガイドと月形爪7との間に戻しバネ
17を介設している。
(57) [Summary] [Problem] A pair of operation rods are pivotally supported on both sides of a wheelchair body,
At the tip of the swinging rod pivotally supported on the axle of the drive wheel, a lug-shaped claw is pivotally supported opposite the tread surface of the drive wheel, and the swinging rod swings to the drive wheel rotation side in conjunction with the operation rod. An object of the present invention is to provide a wheelchair driving device in which a pawl is pressed against a tread surface of a driving wheel to be driven. SOLUTION: A base end of a swinging rod 6 is pivotally supported on an axle 3 which supports a driving wheel 4 on both sides of a vehicle body 2 of a wheelchair 1, and protrudes from a tread surface 5 of the driving wheel 4 to protrude therefrom. In order to pivotally support the base end of the claw with a claw pin 9, a half-moon-shaped friction surface 8 formed on the claw is arranged in the rotation direction of the tread surface, and a bracket 10 protruding on both sides of the vehicle body is operated. The rod 11 is pivotally supported, and the crank pin 12 of the operation rod is slid into a slot 13 provided in the middle of the swinging rod 6. An operation wire 16 inserted into the wire guide 15 is connected between the guides, and a return spring 17 is provided between the guide and the lug 7.
Description
【0001】[0001]
本考案は、車椅子の駆動装置に関するものである。 The present invention relates to a driving device for a wheelchair.
【0002】[0002]
従来、一般に、車椅子の大径の駆動輪の外側に並設したハンドリムを椅坐位に おいて、両手を同リム上から前方へ向けて押し出すように反復操作し、駆動輪を 駆動して推進しており、両側リムを同時に操作して直進し、片側リムを操作して 操向するものが実施化されている。 Conventionally, in general, a hand rim juxtaposed to the outside of a large-diameter drive wheel of a wheelchair is generally placed in a sitting position, and repetitive operations are performed to push both hands forward from above the rim, thereby driving the drive wheel to propell. It is practiced to operate both rims at the same time to go straight, and operate one rim to steer.
【0003】 また、駆動輪とハンドリムとの間に伝動装置を介装し、ハンドリムの回転方向 と駆動輪の回転方向を逆向きとするものがある(例えば、実公平5−22171 号参照)。[0003] Further, there is a vehicle in which a transmission is interposed between a driving wheel and a hand rim so that the rotating direction of the hand rim and the rotating direction of the driving wheel are opposite to each other (for example, see Japanese Utility Model Publication No. 5-221171).
【0004】 そして、ハンドリムを回転操作する代わりに、往復操作レバーを用い、同レバ ーの往行程において、歯車伝動装置及び第一の一方向クラッチを介して駆動輪を 駆動すると共に、復行程において、逆転歯車装置並びに第二の一方向クラッチを 介して駆動輪を同方向へ駆動し、従って、レバーの往復作動により、駆動輪を推 進駆動することとした駆動装置がある(例えば、実公平6−30179号参照) 。[0004] Instead of rotating the hand rim, a reciprocating lever is used to drive the drive wheels via the gear transmission and the first one-way clutch in the forward stroke of the lever, and in the return stroke. There is a drive device that drives the drive wheels in the same direction via a reverse gear unit and a second one-way clutch, so that the drive wheels are driven forward by reciprocation of a lever (for example, a real drive). No. 6-30179).
【0005】 また、大径車輪とハンドリムとの間に、一方向クラッチを介装し、ハンドリム 掴んで揺動操作して大径車輪を前進方向へ駆動するものがある(例えば、実登3 005373号参照)。[0005] Further, there is a type in which a one-way clutch is interposed between the large-diameter wheel and the hand rim, and the large-diameter wheel is driven in the forward direction by gripping and swinging the hand rim (for example, actual climb 3 005373). No.).
【0006】[0006]
従来の技術で述べたように、普通形の車椅子のハンドリムによる操作は、椅坐 位において、自由上肢の前方ないし前下方への押出し動作が駆動輪への入力動作 であって、逆向きの引寄せ動作が復帰動作であって、押出し動作の最大筋力は、 引寄せ動作の最大筋力より僅かに大いが、通常の連続動作範囲の筋力では、逆に 後者の方が大きい値になる測定報告(Hunsicker,1955)があり、 座乗者は、ハンドリムを掴み、駆動動作を行うとき、上肢筋を不自然に伸縮し、 上体を不自然に前傾して背位圧迫を伴い、その動作に対比して駆動力への変換効 率が悪く、座乗者は急速な前傾姿勢を反復するため、安全性に欠けることがあり 、疲労し勝ちになる欠点があるため、座乗者の入力動作及び入力姿勢を改善し、 これらの諸欠点を解消する車椅子の駆動輪駆動手段が要望される。 As described in the background of the prior art, the operation of a normal wheelchair using the hand rim is such that in a sitting position, the pushing operation of the free upper limb forward or forward and downward is the inputting operation to the driving wheel, and the pulling in the opposite direction is performed. The approaching movement is a return action, and the maximum muscular strength of the pushing action is slightly larger than the maximum muscular strength of the pulling action, but the strength of the normal continuous motion range is larger in the latter case. (Hunsicker, 1955), when the occupant grasps the hand rim and performs the driving operation, the upper limb muscle expands and contracts unnaturally, the upper body unnaturally leans forward, and is accompanied by compression in the dorsal position. The efficiency of conversion to driving force is lower than that of the occupant, and the occupant repeats a rapid forward leaning posture, which may be insecure. Improve the input operation and input posture, these disadvantages Wheelchair drive wheel drive means to solve is desired.
【0007】 また、従来の技術における車椅子の両側一対の歯車装置及び一方向クラッチに より駆動輪を駆動するものは、伝動系の構造が複雑であって、伝動効率を低下し 、入力操作も複雑になる傾向がある。[0007] Further, in the prior art in which the drive wheels are driven by a pair of gears on both sides of a wheelchair and a one-way clutch, the structure of the transmission system is complicated, the transmission efficiency is reduced, and the input operation is also complicated. Tend to be.
【0008】 本考案は、従来の技術におけるこのような問題点に鑑みてなされものであり、 その目的とするところは、車椅子車体の両側に一対の操作桿を枢支し、駆動輪の 車軸に枢支した揺動杆先端位に駆動輪の踏面に対向して月形爪を枢支し、操作桿 と連動して揺動杆を駆動輪回転側へ揺動し、同爪を駆動輪の踏面へ押圧して駆動 することとした車椅子駆動装置を提供しようとするものである。[0008] The present invention has been made in view of such problems in the prior art, and a purpose thereof is to pivotally support a pair of operation rods on both sides of a wheelchair body, and to provide an axle for driving wheels. A lug-shaped claw is pivotally supported at the tip of the pivoted swinging rod in opposition to the tread surface of the drive wheel, and the swinging rod is swung to the drive wheel rotation side in conjunction with the operation rod, and the claw is moved to the drive wheel rotation side. It is an object of the present invention to provide a wheelchair driving device which is driven by pressing on a tread surface.
【0009】[0009]
上記目的を達成するために、本考案の車椅子駆動装置は、 車椅子の車体両側 に駆動輪を軸支した車軸に揺動杆の基端を枢支し、該揺動端を駆動輪の踏面外囲 へ凸設して月形爪の基端側を爪ピンにより枢支し、同爪に形設した半月形の摩擦 面を同駆動輪踏面の回転方向へ向けて配設すると共に、車体両側に凸設したブラ ケットに、ベルクランク形の操作桿を枢支し、該操作桿のクランクピンを揺動杆 中途に設けた溝孔に滑合すると共に、操作桿の中途にブレーキレバーを枢支し、 該レバーと月形爪との間には、ワイヤーガイドに挿通した操作ワイヤーを連結し 、同ガイドと月形爪との間に戻しバネを介設している。 In order to achieve the above object, the wheelchair driving device of the present invention pivotally supports the base end of the swinging rod on the axle supporting the driving wheel on both sides of the body of the wheelchair, and places the swinging end outside the tread surface of the driving wheel. The lug is protruded to the base and the base end side of the lug is pivotally supported by the lug pin.The lug surface formed on the lug is arranged in the direction of rotation of the driving wheel tread, and both sides of the vehicle body A bell crank-shaped operation rod is pivotally supported on the bracket protruding from the operation rod, and the crank pin of the operation rod slides into the slot provided in the swing rod, and the brake lever is pivoted in the middle of the operation rod. An operating wire inserted into the wire guide is connected between the lever and the lug, and a return spring is interposed between the guide and the lug.
【0010】 上記のように構成された車椅子駆動装置において、ブレーキレバーを操作しな い原位置においては、ワイヤーガイドと月形爪との間に介設した戻しバネにより 、同爪の摩擦面と駆動輪の踏面との接触を切離しており、駆動輪の駆動状態に無 関係に、操作桿を椅坐位の前側方から後側方へ回動する引寄せ行程及びその逆向 きの押戻し行程の双方向任意の位置へ自由に作動することができる。[0010] In the wheelchair driving device configured as described above, in the original position where the brake lever is not operated, a return spring interposed between the wire guide and the moon-shaped claw causes the friction surface of the claw to be in contact with the lubrication surface. The contact between the drive wheel and the tread surface is separated, and the pull-out stroke in which the operating rod is rotated from the front side to the back side in the chair sitting position and the push-back stroke in the opposite direction are performed regardless of the driving state of the drive wheel. It can be operated freely to any position in both directions.
【0011】 そして、ブレーキレバーを操作し、操作ワイヤーを介して月形爪の摩擦面を駆 動輪の踏面へ軽く接触した状態で、操作桿を引寄せ行程により回動すると、操作 桿のクランクピンは溝孔内を摺動して揺動杆を駆動輪の回転方向へ回動し、同摩 擦面と踏面との接点における初期摩擦力により、同接点と爪ピン中心間の動径方 向と、駆動輪半径方向との、それぞれの分力としての押圧力を生じ、同爪ピン中 心に関する駆動輪半径方向の分力のモーメントにより、摩擦面を同踏面へ圧接す る側へ転位する傾向を示し、同摩擦面の踏面への押圧力ならびに摩擦力を自動的 に増幅して自縛(セルフロッキング)状態となり、揺動杆の回動と共に駆動輪を 駆動し、車椅子を推進することとなる。[0011] Then, when the brake lever is operated and the frictional surface of the lug is slightly in contact with the tread surface of the driving wheel via the operation wire, the operation rod is rotated by the pulling stroke. Slides in the slot to rotate the swinging rod in the rotation direction of the drive wheel, and the initial frictional force at the contact point between the friction surface and the tread surface causes the radial direction between the contact point and the center of the claw pin. And the pressing force as a component force in the driving wheel radial direction, and the friction surface is displaced to the side where the friction surface is pressed against the tread surface by the moment of the component force in the driving wheel radial direction with respect to the center of the claw pin. A tendency to self-lock (self-locking) by automatically amplifying the pressing force and frictional force on the tread surface of the friction surface, driving the drive wheels with the rotation of the swinging rod, and propelling the wheelchair. Become.
【0012】 つぎに、操作桿を停止するか、押戻し行程へ操作すると、月形爪の摩擦面と駆 動輪踏面との接点における摩擦力の駆動輪半径方向の分力は、月形爪を踏面より 押上げる力となり、爪ピンに関する同分力のモーメントにより同爪を踏面より引 離す側へ転位する傾向を示し、同接点において滑りを生じ、回転状態の駆動輪を 制動することがない。Next, when the operation rod is stopped or operated to the push-back stroke, the component of the friction force at the contact point between the friction surface of the lug nail and the tread surface of the driving wheel in the radial direction of the driving wheel is reduced by the lug nail. It becomes a force to push up from the tread, and it tends to displace to the side that separates the claw from the tread by the moment of the same force related to the claw pin, causing slip at the same contact point and not braking the rotating drive wheel.
【0013】 また、操作桿の任意の位置において、ブレーキレバーを比較的強く操作し、操 作ワイヤーを介して月形爪の摩擦面を駆動輪の踏面へ圧接すると、同摩擦面と踏 面との圧接力により摩擦力を生じて滑り変位を防ぎ、操作桿の引寄せ行程又は押 戻し行程の操作に応じて、揺動杆と駆動輪とを一体的に作動し、駆動輪を前進側 又は後進側へ任意方向へ駆動する。When the brake lever is relatively strongly operated at an arbitrary position of the operation rod and the friction surface of the lug is pressed against the tread surface of the driving wheel via the operation wire, the friction surface and the tread surface are disengaged. A frictional force is generated by the pressure contact force to prevent the sliding displacement, and the swinging rod and the driving wheel are integrally operated according to the operation of the pulling stroke or the pushing back stroke of the operating rod, and the driving wheel is moved forward or forward. Drive in any direction to the reverse side.
【0014】 このように、ブレーキレバーの操作と両側の操作桿の操作行程の方向、大きさ 、速度及び操作力をそれぞれ組み合わせ、また、片側の操作桿を単独に操作する ことにより、車椅子を任意の方向へ駆動して操向することとしている。As described above, the wheelchair can be arbitrarily selected by combining the operation of the brake lever with the operation stroke, the size, the speed, and the operation force of the operation rods on both sides, and operating the operation rod on one side independently. And steer by driving in the direction of.
【0015】[0015]
考案の実施の形態を実施例にもとづき図面を参照して説明すると、図1ないし 図4において、車椅子1の車体2両側の車軸3に大径の駆動輪4を軸支し、車軸 3外側に同軸的に揺動杆6の基端を枢支し、揺動端を駆動輪4の踏面5外囲へ凸 設して月形爪7の基端側を爪ピン9により枢支するため、同爪に形設した半月形 の摩擦面8を同駆動輪踏面の回転方向へ向けて配設すると共に、車体2両側に凸 設したブラケット10に、ベルクランク形の操作桿11の支点を枢支し、該操作 桿のクランクピン12を揺動杆6中途に設けた溝孔13に滑合すると共に、操作 桿11の中途にブレーキレバー14を枢支し、該レバー作用端と、月形爪7との 間には、可撓性のワイヤーガイド15に挿通した操作ワイヤー16を連結し、同 ガイドと月形爪7との間に戻しバネ17を介設している。 An embodiment of the present invention will be described with reference to the drawings based on an embodiment. In FIGS. 1 to 4, a large-diameter drive wheel 4 is supported on an axle 3 on both sides of a vehicle body 2 of a wheelchair 1 and the outer side of the axle 3 is provided. In order to pivotally support the base end of the swinging rod 6 coaxially and project the swinging end to the outer periphery of the tread surface 5 of the drive wheel 4 to pivotally support the base end side of the lug 7 with the claw pin 9, A half-moon-shaped friction surface 8 formed on the claw is arranged in the direction of rotation of the driving wheel tread surface, and a fulcrum of a bell-crank-shaped operation rod 11 is pivoted on a bracket 10 protruding on both sides of the vehicle body 2. The crank rod 12 of the operating rod is slid into a slot 13 provided in the middle of the swinging rod 6, and a brake lever 14 is pivotally supported in the middle of the operating rod 11. An operation wire 16 inserted through a flexible wire guide 15 is connected between the nail 7 and the guide and the lug. It is interposed a return spring 17 between the.
【0016】 上記のように構成された車椅子駆動装置において、図1及び2に示すように、 ブレーキレバー14を操作しない原位置においては、ワイヤーガイド15と月形 爪7との間に介設した戻しバネ17により、同爪の摩擦面8と駆動輪4の踏面5 との接触を切離しており、駆動輪4の駆動状態に無関係に、操作桿11を椅座位 の前側位aから後側位bへ操作する引寄せ行程a〜b及び逆向きの押戻し行程b 〜aの双方向任意の位置へ自由に回動することができる。In the wheelchair driving apparatus configured as described above, as shown in FIGS. 1 and 2, in the original position where the brake lever 14 is not operated, the wheel guide 15 is interposed between the wire guide 15 and the lug 7. The contact between the friction surface 8 of the claw and the tread surface 5 of the driving wheel 4 is separated by the return spring 17, and the operating rod 11 is moved from the front position a to the rear position of the chair sitting position regardless of the driving state of the driving wheel 4. It is possible to freely rotate to any position in both directions of the pulling strokes a to b operated in the direction b and the push-back strokes ba to a in the opposite direction.
【0017】 そして、図4に示すように、操作桿11の引寄せ行程a〜bにおいて、クラン クピン12を介して揺動杆6を原位置aより駆動輪6の回転方向bへ回動すると き、月形爪7の摩擦面8と駆動輪4の踏面5との接点における駆動輪回転方向の 逆向0き接線方向の摩擦力fと、爪ピン15中心と同接点間の月形爪動径との交 角をθとすると、摩擦力fは、該月形爪動径方向の分力fsecθと、駆動輪半 径方向の分力ftanθとの成分に分解され、何れも摩擦力fを上回り、前者の 分力fsecθは月形爪7の内部応力として平衡状態を保ち、後者の分力fta nθは、同接点における踏面5と摩擦面8との押圧力となり、爪ピン9に関する モーメントとして上記交角をθを逓増する側への転位傾向を生じ、同交角θが直 角に漸近すると、自動的に、同分力ftanθ即ち、同押圧力を急激に増幅し、 踏面5と摩擦面8との接点において自縛(セルフロッキング)状態となり、揺動 杆6と一体的に駆動輪4を駆動して前進方向へ推進することとなる。Then, as shown in FIG. 4, when the swinging rod 6 is rotated from the original position a in the rotation direction b of the driving wheel 6 via the crank pin 12 in the pulling strokes a and b of the operating rod 11. The frictional force f in the tangential direction, which is opposite to the rotational direction of the driving wheel, at the contact point between the friction surface 8 of the lug 7 and the tread surface 5 of the driving wheel 4, and the lug movement between the lug pin 15 center and the same contact point Assuming that the angle of intersection with the radius is θ, the frictional force f is decomposed into components of the component force fsecθ in the radial direction of the lug claw and the component force ftanθ in the radial direction of the driving wheel. The component force fsecθ of the former keeps an equilibrium state as the internal stress of the lug 7, and the component force ftanθ of the latter becomes the pressing force between the tread surface 5 and the friction surface 8 at the same contact point, and the moment about the claw pin 9 The above-mentioned intersection angle tends to be displaced toward the side where θ gradually increases, and the intersection angle θ gradually becomes a right angle. Then, the same component force ftanθ, that is, the same pressing force is automatically amplified rapidly, and the contact between the tread surface 5 and the friction surface 8 is in a self-locking (self-locking) state, and the driving wheel 4 is integrally formed with the swinging rod 6. To drive the vehicle in the forward direction.
【0018】 そして、逆に、操作桿4の力点付近を座乗者の後側位bから前側方aへ押し出 す押戻し行程b〜aにおいて、揺動杆6は駆動輪4の回転方向の逆向きに回動し 、摩擦面8と踏面5との接点における残留押圧力により、駆動輪回転方向へ摩擦 力f′を生じ、同摩擦力と月形爪動径との交角をθとするとき、摩擦力f′は月 形爪動径方向の分力f′secθと、駆動輪半径方向の分力f′tanθとの成 分に分解され、何れも摩擦力f′を上回り、前者の分力f′secθは月形爪7 内部応力として平衡状態を保ち、後者の分力f′tanθは前記押圧力と逆向き の反発力となり、同爪ピン9中心に関するモーメントとして、上記交角θを逓減 する側へ転位傾向を呈し、分力f′tanθと共に同接点における摩擦力を逓減 し、自動的に自縛(セルフロッキング)状態を解除し、月形爪7と踏面5とは互 に滑動する状態となり、駆動輪4の回転状態ならびに推進状態を妨げることがな い。On the other hand, in the push-back stroke b-a in which the vicinity of the power point of the operating rod 4 is pushed out from the rear side b of the occupant to the front side a, the swinging rod 6 rotates in the rotation direction of the driving wheel 4. And the residual pressing force at the contact point between the friction surface 8 and the tread surface 5 generates a friction force f ′ in the drive wheel rotation direction, and the angle of intersection between the friction force and the lug radius is θ The friction force f 'is decomposed into a component of a lunar claw radial component f'secθ and a component of a drive wheel radial direction f'tanθ, both of which exceed the friction force f'. Is maintained as equilibrium as the internal force of the lug 7, and the latter is a repulsive force in the opposite direction to the pressing force. The frictional force at the same contact point gradually decreases together with the component force f'tanθ, To release the self-locking (self-locking) state, a state to slide in each other and the moon pawl 7 and tread 5, it is not name that prevent rotation state and forwarding state of the drive wheels 4.
【0019】 また、操作桿11の任意の位置において、ブレーキレバー14を比較的強く操 作し、操作ワイヤー16を介して月形爪7の摩擦面8を駆動輪踏面5へ圧接する と、同摩擦面と踏面との圧接力により、操作桿11の引寄せ行程a〜b又は押戻 し行程b〜aの操作に応じて摩擦力f又はf′を生じて滑り変位を防ぎ、揺動杆 6と駆動輪4とを一体的に作動し、駆動輪4を前進側又は後進側へ駆動する。When the brake lever 14 is relatively strongly operated at an arbitrary position of the operation rod 11 and the friction surface 8 of the lug 7 is pressed against the drive wheel tread surface 5 via the operation wire 16, Due to the pressing force between the friction surface and the tread surface, a frictional force f or f 'is generated according to the operation of the pulling stroke a-b or the pushing back stroke b-a of the operating rod 11, thereby preventing the sliding displacement. 6 and the drive wheel 4 are integrally operated to drive the drive wheel 4 forward or backward.
【0020】 このように、ブレーキレバー14の操作と両側の操作桿11の操作の方向、大 きさ、速度及び操作力をそれぞれ組み合わせ、また、片側の操作桿11を単独に 操作することにより、車椅子1を任意の方向へ駆動して操向することとしている 。As described above, the operation direction, the size, the speed, and the operation force of the operation of the brake lever 14 and the operation of the operation rods 11 on both sides are respectively combined, and the operation of the operation rod 11 on one side is independently performed. The wheelchair 1 is driven in an arbitrary direction and steered.
【0021】[0021]
本考案は、上述のとおり構成されているので、次に記載する効果を奏する。 Since the present invention is configured as described above, the following effects can be obtained.
【0022】 請求項1の車椅子駆動装置においては、月形爪により、駆動輪の踏面を押圧し て直接駆動することにより、従来の技術における一方向クラッチ及び歯車伝動装 置による伝動損失がなく、操作桿より駆動輪への伝動効率を向上することができ る。In the wheelchair driving device according to the first aspect, by directly driving the driving wheel by pressing the tread surface of the driving wheel by the moon-shaped pawl, there is no transmission loss due to the one-way clutch and the gear transmission device in the prior art. The transmission efficiency from the operating rod to the drive wheels can be improved.
【0023】 そして、車体両側の操作桿を、椅座位において前側位より引寄せ操作により駆 動輪の駆動力を与え、押戻し操作により前側位へ円滑に復帰するため、座乗者の 上体の姿勢変位が少なく、上肢筋の自然な伸縮動作により、駆動力への変換効率 が良好であって、疲労が少なく快適な操作ができるため、普通のハンドリム形車 椅子において、座乗者がハンドリム操作に伴う不自然な前傾姿勢を反復する動作 に対比して駆動力への変換効率が悪く、疲労し勝ちであって安全性に欠ける諸欠 点を解消することができる。The operation rods on both sides of the vehicle body are pulled from the front side in the chair sitting position to apply driving force to the driving wheels by a pulling operation, and are smoothly returned to the front side position by the pushing back operation. Since the posture displacement is small and the upper extremity muscles naturally expand and contract, the conversion efficiency to driving force is good, and the operation can be performed comfortably with less fatigue. As compared with the operation of repeating the unnatural forward leaning posture associated with the above, the conversion efficiency to the driving force is lower, and it is possible to eliminate various disadvantages that tend to cause fatigue and lack safety.
【0024】 また、ブレーキレバーの操作により、月形爪と駆動輪の踏面との接触状態を変 更することができるため、操作桿の操作方向、大きさ、速度及び操作力との組み 合わせにより、車椅子を任意の方向へ駆動して操向することができる。Also, by operating the brake lever, it is possible to change the contact state between the lug-shaped pawl and the tread surface of the driving wheel, so that the operating direction, size, speed and operating force of the operating rod can be changed in combination. The wheelchair can be steered by driving in any direction.
【0024】 さらに、ブレーキレバーの操作により、月形爪と駆動輪の踏面とを強く圧接し て相互の滑動を防止した状態に保持し、操作桿の揺動を拘束することにより、駆 動輪を制動することができる。Further, by operating the brake lever, the lug-shaped pawl and the tread surface of the drive wheel are strongly pressed against each other to prevent mutual sliding, and by restraining the operation rod from swinging, the drive wheel is restrained. Can be braked.
【0025】 そして、月形爪により、駆動輪の踏面を押圧して直接駆動することにより、従 来の技術における一方向クラッチ及び歯車などによる伝動装置を設ける必要がな く、簡単な軽量構成であって、故障が少なく、低価格な駆動装置を提供すること ができる。[0025] Then, by driving directly by pressing the tread surface of the drive wheel with the lug-shaped pawls, there is no need to provide a transmission device such as a one-way clutch and gears in the conventional technology, and a simple and lightweight structure is provided. As a result, a low-cost drive device with few failures can be provided.
【図1】車椅子駆動装置の立面図である。FIG. 1 is an elevational view of a wheelchair drive.
【図2】図1の要部詳細の立面図である。FIG. 2 is an elevational view of details of a main part of FIG. 1;
【図3】図1のA矢からみた立面図である。FIG. 3 is an elevation view as viewed from the arrow A in FIG. 1;
【図4】図2の要部作動状態を示す模式図である。FIG. 4 is a schematic view showing an operation state of a main part of FIG. 2;
1 車椅子 2 車体 3 車軸 4 駆動輪 5 踏面 6 揺動杆 7 月形爪 8 摩擦面 9 爪ピン 10 ブラケット 11 操作桿 12 クランクピン 13 溝孔 14 ブレーキレバー 15 ワイヤーガイド 16 操作ケーブル 17 戻しバネ 18 キャスター f 摩擦力(操作桿の引寄せ行程における) θ 摩擦力と月形爪動径との交角 ftanθ 駆動輪半径方向の分力(操作桿の引寄せ行
程における) fsecθ 月形爪動径方向の分力(操作桿の引寄せ行
程における) f′摩擦力(操作桿の押出し行程における) f′tanθ 駆動輪半径方向の分力(操作桿の押出し
行程における) f′secθ 月形爪動径方向の分力(操作桿の押出し
行程における) a〜b 引寄せ行程(操作桿の) b〜a 押戻し行程(操作桿の)DESCRIPTION OF SYMBOLS 1 Wheelchair 2 Body 3 Axle 4 Driving wheel 5 Tread surface 6 Oscillating rod 7 Moon shaped claw 8 Friction surface 9 Claw pin 10 Bracket 11 Operation rod 12 Crank pin 13 Slot 14 Brake lever 15 Wire guide 16 Operation cable 17 Return spring 18 Caster f Friction force (during operation rod pulling stroke) θ Intersection angle between friction force and lug nail radius ftanθ Component force in the drive wheel radial direction (during operation rod pulling stroke) fsec θ Lunar jaw radial direction component Force (during the operation rod pulling stroke) f 'friction force (during the operation rod pushing stroke) f'tanθ Component force in the driving wheel radial direction (during the operation rod pushing stroke) f'secθ lunar claw radial direction Component force (in operation rod pushing stroke) a-b Pulling stroke (of operation rod) b-a Push-back stroke (of operation rod)
Claims (1)
(4)を軸支した車軸(3)に揺動杆(6)の基端を枢
支し、該揺動端を駆動輪(4)の踏面(5)外囲へ凸設
して月形爪(7)の基端側を爪ピン(9)により枢支
し、同爪に形設した半月形の摩擦面(8)を同駆動輪踏
面の回転方向へ向けて配設すると共に、車体(2)両側
に凸設したブラケット(10)に、ベルクランク形の操
作桿(11)を枢支し、該操作桿のクランクピン(1
2)を揺動杆(6)中途に設けた溝孔(13)に滑合す
ると共に、同操作桿の中途にブレーキレバー(14)を
枢支し、該レバーと月形爪(7)との間には、ワイヤー
ガイド(15)に挿通した操作ワイヤー(16)を連結
し、同ガイドと月形爪(7)との間に戻しバネ(17)
を介設してなる車椅子駆動装置。1. A base end of a swinging rod (6) is pivotally supported on an axle (3) supporting a driving wheel (4) on both sides of a vehicle body (2) of a wheelchair (1) to drive the swinging end. The lug (4) is protruded to the outer surface of the tread (5) and the base end of the lug (7) is pivotally supported by the lug pin (9). ) Is arranged in the direction of rotation of the drive wheel tread surface, and a bell crank-shaped operation rod (11) is pivotally supported on a bracket (10) protruding on both sides of the vehicle body (2). Crank pin (1
2) slides into a slot (13) provided in the middle of the swinging rod (6), and pivotally supports a brake lever (14) in the middle of the operating rod. Between them, an operation wire (16) inserted through a wire guide (15) is connected, and a return spring (17) is provided between the guide and the lug (7).
A wheelchair driving device interposed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001007356U JP3085053U (en) | 2001-10-04 | 2001-10-04 | Wheelchair drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001007356U JP3085053U (en) | 2001-10-04 | 2001-10-04 | Wheelchair drive |
Publications (1)
Publication Number | Publication Date |
---|---|
JP3085053U true JP3085053U (en) | 2002-04-05 |
Family
ID=43236505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001007356U Expired - Fee Related JP3085053U (en) | 2001-10-04 | 2001-10-04 | Wheelchair drive |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3085053U (en) |
-
2001
- 2001-10-04 JP JP2001007356U patent/JP3085053U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3994509A (en) | Propulsion means for wheelchairs | |
US5826897A (en) | Manually powered vehicle having a flywheel assisted drive | |
US4453729A (en) | Occupant propellable wheelchair | |
US3189368A (en) | Wheel chair driver attachment | |
US20060249925A1 (en) | User-propelled riding toys with simultaneously pedal recovery system | |
JPS61501369A (en) | Wheelchair driven by hand pedal reciprocating motion | |
US6325398B1 (en) | Manually operated ergonomic wheelchair | |
JP4125292B2 (en) | Especially mobile objects such as scooters | |
US6820885B1 (en) | Wheelchair apparatus | |
JP3085053U (en) | Wheelchair drive | |
JP6055184B2 (en) | Brake structure of moving body | |
US20060097473A1 (en) | Easy roll wheel adapter | |
WO2006068449A1 (en) | Power transmission apparatus having function of converting output and wheel chair having the same | |
JP2013252417A (en) | Wheelchair for rehabilitation | |
CN109938939A (en) | Flat push lever driving device and wheelchair suitable for wheelchair | |
CN211364831U (en) | Balance vehicle | |
US10940063B2 (en) | Reciprocating drive motion wheelchair | |
CN210542118U (en) | Flat push type lever driving device suitable for wheelchair and wheelchair | |
US20060170182A1 (en) | Manual wheelchair drive system | |
KR102026178B1 (en) | Manual driving device for wheelchair | |
CN105078670A (en) | Wheelchair and operation method thereof | |
KR20120008945U (en) | assisting the operation of wheelchair using a lever | |
CN220046322U (en) | Wheelchair for pregnant and lying-in women | |
JP2002250370A (en) | Braking device and truck | |
JP3158140U (en) | Bicycle for the handicapped |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |