JP2006136696A - Driving part of self-propelled wheelchair actuated by reciprocating operation of handle - Google Patents

Driving part of self-propelled wheelchair actuated by reciprocating operation of handle Download PDF

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JP2006136696A
JP2006136696A JP2004359100A JP2004359100A JP2006136696A JP 2006136696 A JP2006136696 A JP 2006136696A JP 2004359100 A JP2004359100 A JP 2004359100A JP 2004359100 A JP2004359100 A JP 2004359100A JP 2006136696 A JP2006136696 A JP 2006136696A
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wheelchair
handle
gears
gear
way clutch
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JP2004359100A
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Japanese (ja)
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Iwao Harada
以和夫 原田
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that, if wheels are smaller than a seat face such as an assisting type wheelchair, a user of the wheelchair can easily get in/out by just shifting to the side, however, conventionally, a self-propelled wheelchair has the large wheels and the user has to largely moved to the front and then get in and out. <P>SOLUTION: This self-propelled wheelchair is provided with three advancing gears 1, 2 and 3 including a one-way clutch, two gears 4 and 5 including the one-way clutch, and three gears 6, 7 and 8 including a one-way clutch for retreating. The wheelchair is thus driven by converting the reciprocating movement of the handle into the rotary movement of an axle. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

発明の詳細な説明Detailed Description of the Invention

本発明は、ハンドルの往復運動により駆動する自走式車いすの駆動部に関する。  The present invention relates to a drive unit for a self-propelled wheelchair that is driven by a reciprocating motion of a handle.

従来の自走式車いすに於いては、車輪のリムに取り付けられたハンドリムを回すことにより車いすを駆動していた。  In a conventional self-propelled wheelchair, a wheelchair is driven by turning a hand rim attached to a wheel rim.

発明が解決しようとする課題Problems to be solved by the invention

従来、車いすの使用者が移乗する際,介助式車いすのように車輪が座面より小さければ横にずれて容易に乗降することができるが、自走式車いすは車輪が大きいので前に大きく移動してから乗り降りをしなければならなかった。  Conventionally, when a wheelchair user moves, a wheelchair can easily get on and off as long as the wheel is smaller than the seating surface, like an assistive wheelchair. Then I had to get on and off.

また、ハンドリムがタイヤの径より小さいので大きいトルクが必要であり、さらにハンドリムを回す為の力に加えてハンドリムが滑らない様にする為の握力も必要とされた。特に登板する場合、車いすが後退しないようにハンドリムをすばやく持ち替えなければならなかった。  Further, since the hand rim is smaller than the tire diameter, a large torque is required, and in addition to the force for turning the hand rim, a gripping force for preventing the hand rim from slipping is also required. Especially when climbing, the hand rim had to be changed quickly to prevent the wheelchair from moving backward.

また、屋外などで使用する際ハンドリムがタイヤの接地面近くにある為,操作する手が汚れがちであった。  In addition, when used outdoors, the hand rim is close to the ground contact surface of the tire.

課題を解決するための手段Means for solving the problem

ワンウェイクラッチを含む前進用の3枚の歯車(1),(2),(3)と、ワンウェイクラッチを含む2枚の歯車(4),(5)と、後退用のワンウェイクラッチを含む3枚の歯車(6),(7),(8)を有することによりハンドルの往復運動を、車軸の回転運動に変換し車いすを駆動する。  Three gears (1), (2), (3) for forward movement including one-way clutch, two gears (4), (5) including one-way clutch, and three gears for reverse one-way clutch By having the gears (6), (7) and (8), the reciprocating motion of the handle is converted into the rotational motion of the axle to drive the wheelchair.

発明の実施の形態を実施例に基づき、図面を参照して説明する。
図1は、車いすの進行方向 前側より本発明の駆動部を見た図である。フレーム、座面、車輪、ブレーキ等は省略する。左右対称で独立した駆動部なので進行方向左側について説明する。
An embodiment of the invention will be described based on an example with reference to the drawings.
FIG. 1 is a view of the drive unit of the present invention viewed from the front side in the traveling direction of the wheelchair. Frames, seating surfaces, wheels, brakes, etc. are omitted. Since the drive unit is symmetrical and independent, the left side in the traveling direction will be described.

図2は図1において右側(車いす進行方向の左側)の駆動部を、外側から見た図で左を進行方向とする。記号(1),(2),(3),(4),(5),は前進用の歯車である。歯車(3),(5)には右回りに対して空転するようにそれぞれワンウェイクラッチが備わる。  FIG. 2 is a view of the drive unit on the right side (left side in the wheelchair traveling direction) in FIG. Symbols (1), (2), (3), (4), (5) are forward gears. The gears (3) and (5) are each provided with a one-way clutch so as to idle in the clockwise direction.

図3は同じく図1において右側(車いすの進行方向左側)の駆動部を,外側から見た図で記号(6),(7),(8),は後退用の歯車である。歯車(8)には左回りに対して空転するようにワンウェイクラッチが備わる。  FIG. 3 is a view of the drive unit on the right side (the left side in the traveling direction of the wheelchair) in FIG. 1 as viewed from the outside. Symbols (6), (7), (8) are reverse gears. The gear (8) is provided with a one-way clutch so as to idle with respect to the counterclockwise direction.

図1,2,3に於いてシャフト(10)は歯車(1),(4),(6)を支持している。シャフト(10)はハンドル(9)を介して入力される。
シャフト(11)は歯車(2),(7)を支持する。
シャフト(12)は歯車(3),(8),(5)を支持しハブ(13)に繋がる。
1, 2 and 3, the shaft (10) supports the gears (1), (4) and (6). The shaft (10) is input via the handle (9).
The shaft (11) supports the gears (2) and (7).
The shaft (12) supports the gears (3), (8), (5) and is connected to the hub (13).

ハンドル(9)からの入力はクラッチ等によりシャフト(10)で前進用の歯車(1),(4)と後退用の歯車(6)に切り替えられる。
以上のように構成される。
The input from the handle (9) is switched to the forward gears (1), (4) and the reverse gear (6) on the shaft (10) by a clutch or the like.
It is configured as described above.

図4,5ではそれぞれ前進の仕組みについて説明する。
図4は、ハンドルを進行方向 前に倒したときの前進の仕組みである。クラッチにより後退用歯車(6),(7),(8)には入力が切断されて、前進用歯車(1),(2),(3)と(4),(5)にのみ入力される。
4 and 5, the forward mechanism will be described.
FIG. 4 shows the forward movement mechanism when the handle is tilted forward. The input to the reverse gears (6), (7), (8) is cut by the clutch, and is input only to the forward gears (1), (2), (3) and (4), (5). The

先ず、ハンドル(9)を前、矢印方向に倒すとトルクは歯車(1)から(2),(3)へ矢印方向に伝達され歯車(3)はシャフト(12)を左回りに回転させる。
このとき同時に、歯車(4)は歯車(5)に右回転を伝えるが、歯車(5)のワンウェイクラッチによりシャフト(12)は空転する。
以上によって、車いすは図面左方向に前進する。
First, when the handle (9) is tilted forward and in the direction of the arrow, torque is transmitted from the gear (1) to (2) and (3) in the direction of the arrow, and the gear (3) rotates the shaft (12) counterclockwise.
At the same time, the gear (4) transmits the right rotation to the gear (5), but the shaft (12) is idled by the one-way clutch of the gear (5).
Thus, the wheelchair advances in the left direction in the drawing.

図5は、ハンドル(9)を進行方向手前に引いたときの前進のしくみである。ここでもクラッチにより後退用歯車(6),(7),(8)には入力が切断され、前進用歯車(1),(2),(3)と(4),(5),にのみ入力される。  FIG. 5 shows the forward movement mechanism when the handle (9) is pulled forward. Again, the clutch cuts off the input to the reverse gears (6), (7), (8), and only the forward gears (1), (2), (3) and (4), (5). Entered.

先ず、ハンドル(9)を手前、矢印方向に引くとトルクは歯車(1),から(2),(3)と矢印方向に伝達され歯車(8)はシャフト(12)を右回りに回転させる、ところが、歯車(3)のワンウェイクラッチによってシャフト(12)は空転される。
このとき同時に、歯車(4)は歯車(5)に左回転を伝えシャフト(12)は左回りに回転する。
以上によって、車いすは図面左方向に前進する。
First, when the handle (9) is pulled in the direction of the arrow, the torque is transmitted in the direction of the arrow from the gear (1) to (2), (3), and the gear (8) rotates the shaft (12) clockwise. However, the shaft (12) is idled by the one-way clutch of the gear (3).
At the same time, the gear (4) transmits a left rotation to the gear (5), and the shaft (12) rotates counterclockwise.
Thus, the wheelchair advances in the left direction in the drawing.

図6,7では後退のしくみについて説明する。
図6は、ハンドルを進行方向 前に倒したときの後退のしくみである。クラッチにより前進用歯車(1),(2),(3)と、(4),(5)には入力が切断されて、後退用歯車(6),(7),(8)にのみ入力される。
レバーを前に倒すとトルクは歯車(6)から(7),(8)と矢印方向に伝達される、ところが歯車(8)のワンウェイクラッチによりシャフト(12)は空転してトルクが伝わらず後退しない。
6 and 7, the reverse mechanism will be described.
FIG. 6 shows the backward movement mechanism when the handle is tilted forward. The input to the forward gears (1), (2), (3) and (4), (5) is cut by the clutch, and only the reverse gears (6), (7), (8) are input. Is done.
When the lever is tilted forward, torque is transmitted from the gear (6) to (7), (8) in the direction of the arrow. However, the one-way clutch of the gear (8) causes the shaft (12) to run idle and reverse without torque. do not do.

図7はハンドル(9)を進行方向手前に引いたときの後退のしくみである。ここでも、クラッチにより後退用歯車(6),(7),(8)にのみ入力される。
ハンドルを進行方向 手前に引くとトルクは歯車(6)から(7),(8)へ矢印方向に伝達され歯車(8)はシャフト(12)を右回りに回転させ、車いすを図面右方向に後退させる。
つまり、ハンドルを手前に引いたときのみ後退する。
FIG. 7 shows the backward movement mechanism when the handle (9) is pulled forward. Here too, only the reverse gears (6), (7) and (8) are input by the clutch.
When the handle is pulled forward, the torque is transmitted from the gears (6) to (7), (8) in the direction of the arrow, and the gear (8) rotates the shaft (12) clockwise to move the wheelchair to the right in the drawing. Retreat.
In other words, it retracts only when the handle is pulled forward.

なお、実施例は前進用歯車と後退用歯車を同軸上に構成し、クラッチによりハンドルからの入力を切り替えているが、前進用歯車と後退用歯車を独立させ別のハンドルで操作することも可能である。  In the embodiment, the forward gear and the reverse gear are coaxially configured and the input from the handle is switched by the clutch. However, the forward gear and the reverse gear can be made independent and operated with different handles. It is.

また、歯車(4),(5)をチェーンやベルトに代替することも可能である。  The gears (4) and (5) can be replaced with a chain or a belt.

ワンウェイクラッチは歯車(3),(4),(8)以外の歯車に設定しても同様の効果を得られる。  Even if the one-way clutch is set to a gear other than the gears (3), (4), and (8), the same effect can be obtained.

発明の効果The invention's effect

本発明は、以上説明したように構成されているので以下に記載されるような効果を奏する。  Since the present invention is configured as described above, the following effects can be obtained.

従来の介助式車いすのように、車輪を小さくすることができるので特に側面からの移乗がしやすくなる。  Since the wheel can be made small like a conventional assisting wheelchair, it is particularly easy to transfer from the side.

歯車を介して駆動するので、使用者の腕力に適合したギア比を設定することができ、ハンドルを使用することによりより大きいトルクを与えることができる。  Since driving is performed via a gear, a gear ratio adapted to the user's arm force can be set, and a larger torque can be applied by using the handle.

ハンドルを前後に往復させることにより前進することができるので、駆動効率がよい、また従来のようにハンドリムが滑らないようにする握力を必要としない。  Since it can move forward by reciprocating the handle back and forth, the driving efficiency is good, and a gripping force that prevents the hand rim from slipping as in the prior art is not required.

登坂時においても、ハンドリムを持ち替えることなくハンドルを通常のように前後に操作することで登坂できる。  Even when climbing, it is possible to climb by operating the steering wheel back and forth as usual without changing the hand rim.

タイヤとハンドルが独立しているので操作する手が汚れにくい。  Since the tire and the handle are independent, the operation hand is difficult to get dirty.

ハンドルと車軸が独立しているので、車輪のみならず無限軌道などを設定することも可能である。  Since the steering wheel and the axle are independent, it is possible to set not only wheels but also an endless track.

車いす駆動部の進行方向、前方からの後方を見た見取り図。The sketch which looked at the advancing direction of the wheelchair drive part, and the back from the front. 左側の車いす駆動部の前進用歯車を外側から示す。The forward gear of the left wheelchair drive is shown from the outside. 左側の車いす駆動部の後退用歯車を外側から示す。The reverse gear of the left wheelchair drive is shown from the outside. ハンドルを前に倒したときの前進のしくみ。How forward moves when the handle is tilted forward. ハンドルを手前に引いたときの前進のしくみ。The mechanism of advancement when the handle is pulled toward you. ハンドルを前に倒したときの後退のしくみ。The mechanism of retreat when the handle is tilted forward. ハンドルを手前に引いたときの後退のしくみ。Mechanism of retraction when the handle is pulled forward. 本発明の実施例Examples of the present invention

符号の説明Explanation of symbols

1 前進用ギア
2 前進用ギア
3 前進用ギア、ワンウェイクラッチ付
4 前進用ギア
5 前進用ギア、ワンウェイクラッチ付
6 後退用ギア
7 後退用ギア
8 後退用ギア、ワンウェイクラッチ付
9 ハンドル
10 シャフト
11 シャフト
12 シャフト
13 ハブ
DESCRIPTION OF SYMBOLS 1 Forward gear 2 Forward gear 3 Forward gear, with one-way clutch 4 Forward gear 5 Forward gear, with one-way clutch 6 Reverse gear 7 Reverse gear 8 Reverse gear, with one-way clutch 9 Handle 10 Shaft 11 Shaft 12 Shaft 13 Hub

Claims (2)

ワンウェイクラッチを含む3枚の歯車(1),(2),(3),と、ワンウェイクラッチを含む2枚の歯車(4),(5)を有することにより、ハンドルの往復運動を車軸の回転運動に変換し、駆動する自走式車いすの駆動部。  By having the three gears (1), (2), (3) including the one-way clutch and the two gears (4), (5) including the one-way clutch, the reciprocating motion of the steering wheel is rotated by the axle. A self-propelled wheelchair drive unit that converts and drives the movement. 後退用にワンウェイクラッチを含む3枚の歯車(6),(7),(8)を有する、上記請求項1記載の車いすの駆動部。  The wheelchair drive unit according to claim 1, comprising three gears (6), (7), (8) including a one-way clutch for reversing.
JP2004359100A 2004-11-13 2004-11-13 Driving part of self-propelled wheelchair actuated by reciprocating operation of handle Pending JP2006136696A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008132127A (en) * 2006-11-28 2008-06-12 Hiroshi Goto Wheelchair
JP2017502810A (en) * 2014-01-08 2017-01-26 ロビンス, ダグラス ジー.ROBINS, Douglas G. wheelchair
JP6980331B1 (en) * 2021-08-11 2021-12-15 株式会社キョウワコーポレーション wheelchair

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54154185A (en) * 1978-05-23 1979-12-05 Mitsuyoshi Yamaguchi Lever drive system wheelchair
JPH0386226U (en) * 1989-12-22 1991-08-30
JPH05192370A (en) * 1990-05-02 1993-08-03 Revab Bv Driving gear for patient-driven cycle such as wheelchair
JPH0574520U (en) * 1992-03-12 1993-10-12 要 山添 Crawler wheelchair drive
JP2001224634A (en) * 2000-02-17 2001-08-21 Eizo Sumimoto Wheelchair
JP3215621B2 (en) * 1996-02-08 2001-10-09 輝夫 咲間 Drive
JP2003299696A (en) * 2002-04-10 2003-10-21 Akira Korosue Lever-driven wheelchair
JP2006507896A (en) * 2002-12-02 2006-03-09 ワットウッド,ブライアン,エム. Wheelchair drive mechanism

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54154185A (en) * 1978-05-23 1979-12-05 Mitsuyoshi Yamaguchi Lever drive system wheelchair
JPH0386226U (en) * 1989-12-22 1991-08-30
JPH05192370A (en) * 1990-05-02 1993-08-03 Revab Bv Driving gear for patient-driven cycle such as wheelchair
JPH0574520U (en) * 1992-03-12 1993-10-12 要 山添 Crawler wheelchair drive
JP3215621B2 (en) * 1996-02-08 2001-10-09 輝夫 咲間 Drive
JP2001224634A (en) * 2000-02-17 2001-08-21 Eizo Sumimoto Wheelchair
JP2003299696A (en) * 2002-04-10 2003-10-21 Akira Korosue Lever-driven wheelchair
JP2006507896A (en) * 2002-12-02 2006-03-09 ワットウッド,ブライアン,エム. Wheelchair drive mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008132127A (en) * 2006-11-28 2008-06-12 Hiroshi Goto Wheelchair
JP2017502810A (en) * 2014-01-08 2017-01-26 ロビンス, ダグラス ジー.ROBINS, Douglas G. wheelchair
JP6980331B1 (en) * 2021-08-11 2021-12-15 株式会社キョウワコーポレーション wheelchair

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