JP2011170524A - Operating mechanism and life assistive equipment - Google Patents

Operating mechanism and life assistive equipment Download PDF

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JP2011170524A
JP2011170524A JP2010032547A JP2010032547A JP2011170524A JP 2011170524 A JP2011170524 A JP 2011170524A JP 2010032547 A JP2010032547 A JP 2010032547A JP 2010032547 A JP2010032547 A JP 2010032547A JP 2011170524 A JP2011170524 A JP 2011170524A
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support shaft
operating
lever
force
fulcrum
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JP5471566B2 (en
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Yasunobu Aihara
泰宣 粟飯原
Hitoshi Igarashi
均 五十嵐
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Max Co Ltd
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Max Co Ltd
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Priority to EP10015673A priority patent/EP2340988A3/en
Priority to CN2010106216904A priority patent/CN102113946A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To apply an operating mechanism which holds a target to be operated, in a prescribed operation state and reduces the operation load. <P>SOLUTION: An operating mechanism 1A includes an operating lever 2A receiving operator's force and a link member 3A configured to transmit an operation of the operating lever 2A to an operating wire 11 for operating the target to be operated, and the operating force is reduced at a ratio of distances between power working points and effort points, and support points in the operating lever 2A and the link member 3A. A working surface 22A of an operating part 20A rotated with a second support shaft 24A as a support point abuts on the link member 3A in a prescribed direction, thereby the operating lever 2A is held at a lock position. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、操作者に操作される操作機構及び操作機構を備えた生活支援用具に関する。   The present invention relates to an operating mechanism operated by an operator and a life support tool including the operating mechanism.

人が操作する機構で、特に手で操作対象物を操作する機構では、例えばブレーキを操作する機構として、自転車のハンドブレーキ構造が一般的に使用されている。自転車等のハンドブレーキ構造に用いられるブレーキレバーは、一端側が軸支された操作レバーの回転でワイヤを牽引する機構で、人が指で操作レバーを握ることで操作される。   In a mechanism operated by a person, particularly a mechanism that operates an operation target with a hand, for example, a bicycle handbrake structure is generally used as a mechanism for operating a brake. A brake lever used in a hand brake structure of a bicycle or the like is a mechanism that pulls a wire by rotation of an operation lever that is pivotally supported at one end side, and is operated by a person holding the operation lever with a finger.

自転車のハンドブレーキ構造は、一般用途または競技志向者用途に、速度調整のための制動を目的とし、操作レバーの微妙な手の力感覚によるブレーキ本体への力の伝達度合いを操作性の兼ね合いを基に設定されている。   Bicycle handbrake structure is intended for braking for speed adjustment for general use or competition-oriented use, and the degree of transmission of force to the brake body due to delicate hand force sense of the operating lever is balanced with operability. It is set based on.

一方、車椅子等の生活支援用具でも、自転車のハンドブレーキ構造と同等の操作機構が備えられているものがある。車椅子に適用された操作機構では、ブレーキを制動状態でロックできるようにしたブレーキレバーが提案されている。   On the other hand, some life support tools such as wheelchairs are provided with an operation mechanism equivalent to a bicycle handbrake structure. In an operation mechanism applied to a wheelchair, a brake lever that can lock a brake in a braking state has been proposed.

例えば、ブレーキレバーを通常の制動時と逆向きに押すことで、所定の位置でブレーキレバーの位置を保持し、ブレーキを制動状態でロックできるようにしたブレーキレバーが提案されている(例えば、特許文献1参照)。また、ブレーキを制動状態でロックする際のブレーキレバーの作動量を大きくしたブレーキレバーが提案されている。(例えば、特許文献2参照)。   For example, a brake lever has been proposed in which the brake lever is pressed in the opposite direction to that during normal braking so that the position of the brake lever is maintained at a predetermined position and the brake can be locked in a braking state (for example, a patent Reference 1). In addition, a brake lever has been proposed in which the amount of operation of the brake lever when the brake is locked in a braking state is increased. (For example, refer to Patent Document 2).

特許第2576823号公報Japanese Patent No. 2576823 特開平9−267731号公報Japanese Patent Laid-Open No. 9-267331

特許文献1に記載された操作機構は、少ないブレーキレバーの作動量で、ブレーキを制動状態でロックできる。しかし、操作荷重が重く、かつ、ブレーキレバーの少ない作動量でロックの解除も行えてしまうので、不用意な操作でのロックの解除を排除できず、操作の容易性と確実性を両立できない。   The operation mechanism described in Patent Document 1 can lock the brake in a braking state with a small operation amount of the brake lever. However, since the operation load is heavy and the lock can be released with a small operation amount of the brake lever, it is impossible to eliminate the lock release due to an inadvertent operation, and it is impossible to achieve both ease of operation and certainty.

また、特許文献2に記載された操作機構は、不用意な操作でのロックの解除は防止できるが、作動量の大きなブレーキレバーで操作荷重が重いので、特に力が弱い人にとっては操作を確実に行うことが困難で、操作の容易性も確保できない。 例えば、介護用の車椅子では、今後介護者の高齢化に伴い、操作荷重の軽減は確実な操作のために必要である。また、車椅子のみならず、高齢者用の補助輪付きの自転車、幼児同乗の3人乗り自転車等、一般の自転車とは異なる用途での操作レバーでも、操作荷重の軽減が求められる。   In addition, although the operation mechanism described in Patent Document 2 can prevent the lock from being released by careless operation, the operation load is heavy with a brake lever with a large operating amount, so operation is particularly reliable for people with weak power. It is difficult to perform the operation easily, and the ease of operation cannot be ensured. For example, in a wheelchair for nursing care, with the aging of caregivers in the future, it is necessary to reduce the operation load for reliable operation. Further, not only wheelchairs but also operation levers for applications different from ordinary bicycles such as bicycles with auxiliary wheels for elderly people and three-seater bicycles with infants are required to reduce the operation load.

本発明は、このような課題を解決するためになされたもので、操作対象物を所定の作動状態で保持でき、かつ操作荷重が軽減される操作機構及び生活支援用具を提供することを目的とする。   The present invention has been made to solve such a problem, and an object thereof is to provide an operation mechanism and a life support tool that can hold an operation object in a predetermined operating state and reduce an operation load. To do.

上述した課題を解決するため、本発明は、操作者の力を受けて移動する操作部材と、操作部材の動作を、操作対象物を作動させる駆動力伝達手段に伝達するリンク部材と、操作部材の操作に要する操作荷重を低減させる操作力軽減手段と、操作力軽減手段で操作荷重が軽減される操作部材の操作で操作対象物を所定の状態で保持する保持手段とを備えた操作機構である。   In order to solve the above-described problems, the present invention provides an operation member that moves under the force of an operator, a link member that transmits the operation of the operation member to a driving force transmission unit that operates an operation target, and an operation member An operation mechanism comprising an operation force reducing means for reducing an operation load required for the operation and a holding means for holding an operation object in a predetermined state by operating an operation member whose operation load is reduced by the operation force reducing means. is there.

また、本発明は、上述した操作機構と、操作機構に操作される操作対象物を備えた生活支援用具である。   Moreover, this invention is a life assistance tool provided with the operation mechanism mentioned above and the operation target object operated by the operation mechanism.

本発明の操作機構では、操作部材の操作に必要な荷重が、操作部材及びリンク部材における力の作用点及び力点と支点間距離の比で軽減される。また、操作対象物を所定の作動状態で保持する操作でも、操作部材の操作に必要な荷重が軽減される。   In the operation mechanism of the present invention, the load required for operation of the operation member is reduced by the force application point and the ratio between the force point and the fulcrum distance in the operation member and the link member. Further, even when the operation target is held in a predetermined operating state, a load necessary for operating the operation member is reduced.

本発明の生活支援用具では、上述した操作機構を備えることで、操作者の負担が軽減される。   In the life support tool of the present invention, the burden on the operator is reduced by providing the operation mechanism described above.

本発明によれば、操作部材の操作に必要な荷重を軽減することができ、操作部材を操作する操作者の負担を軽減することができる。また、操作対象物を所定の作動状態で保持する操作でも、操作部材の操作に必要な荷重を軽減することができる。   According to the present invention, it is possible to reduce the load necessary for operating the operation member, and it is possible to reduce the burden on the operator who operates the operation member. Further, even when the operation target is held in a predetermined operating state, a load necessary for operating the operation member can be reduced.

第1の実施の形態の操作機構の一例を示す構成図である。It is a block diagram which shows an example of the operation mechanism of 1st Embodiment. 第1の実施の形態の操作機構における操作レバーの一例を示す構成図である。It is a block diagram which shows an example of the operation lever in the operation mechanism of 1st Embodiment. 第1の実施の形態の操作機構の動作の一例を示す動作説明図である。It is operation | movement explanatory drawing which shows an example of operation | movement of the operation mechanism of 1st Embodiment. 第1の実施の形態の操作機構の動作の一例を示す動作説明図である。It is operation | movement explanatory drawing which shows an example of operation | movement of the operation mechanism of 1st Embodiment. 第1の実施の形態の操作機構の動作の一例を示す動作説明図である。It is operation | movement explanatory drawing which shows an example of operation | movement of the operation mechanism of 1st Embodiment. 第1の実施の形態の操作機構の動作の一例を示す動作説明図である。It is operation | movement explanatory drawing which shows an example of operation | movement of the operation mechanism of 1st Embodiment. 第1の実施の形態の操作機構の効果例を示す動作説明図である。It is operation | movement explanatory drawing which shows the example of an effect of the operation mechanism of 1st Embodiment. 第2の実施の形態の操作機構の一例を示す構成図である。It is a block diagram which shows an example of the operation mechanism of 2nd Embodiment. 第2の実施の形態の操作機構の動作の一例を示す動作説明図である。It is operation | movement explanatory drawing which shows an example of operation | movement of the operation mechanism of 2nd Embodiment. 第2の実施の形態の操作機構の動作の一例を示す動作説明図である。It is operation | movement explanatory drawing which shows an example of operation | movement of the operation mechanism of 2nd Embodiment. 本実施の生活支援用具としての福祉用具である車椅子の一例を示す構成図である。It is a block diagram which shows an example of the wheelchair which is a welfare tool as a life assistance tool of this implementation.

以下、図面を参照して、本発明の操作機構、操作機構を備えた生活支援用具の実施の形態について説明する。   Hereinafter, with reference to the drawings, an embodiment of an operation mechanism of the present invention and a life support tool provided with the operation mechanism will be described.

<第1の実施の形態の操作機構の構成例>
図1は、第1の実施の形態の操作機構の一例を示す構成図、図2は、第1の実施の形態の操作機構における操作レバーの一例を示す構成図である。第1の実施の形態の操作機構1Aは、人が操作する機構に適用され、操作荷重を低減する機構を備えることで、操作者の負担を軽減する。第1の実施の形態の操作機構1Aは、例えば、車椅子等の生活支援用具で人が手により操作する機構に適用され、本例では、車椅子のブレーキを操作するブレーキレバー10Aに適用した例を示す。
<Configuration Example of Operation Mechanism of First Embodiment>
FIG. 1 is a configuration diagram illustrating an example of an operation mechanism according to the first embodiment, and FIG. 2 is a configuration diagram illustrating an example of an operation lever in the operation mechanism according to the first embodiment. The operation mechanism 1A according to the first embodiment is applied to a mechanism operated by a person, and includes a mechanism for reducing an operation load, thereby reducing the burden on the operator. The operation mechanism 1A of the first embodiment is applied to a mechanism that is manually operated by a person with a life support tool such as a wheelchair, for example. In this example, the operation mechanism 1A is applied to a brake lever 10A that operates a brake of a wheelchair. Show.

第1の実施の形態の操作機構1Aは、操作者に操作される操作レバー2Aと、操作レバー2Aの動作を、操作対象物であるブレーキを作動させる駆動力伝達手段としての操作ワイヤ11に伝達するリンク部材3Aと、操作レバー2Aとリンク部材3Aが取り付けられるブラケット4Aを備える。   The operation mechanism 1A according to the first embodiment transmits an operation lever 2A operated by an operator and the operation of the operation lever 2A to an operation wire 11 as a driving force transmission unit that operates a brake that is an operation target. Link member 3A, and bracket 4A to which operation lever 2A and link member 3A are attached.

操作機構1Aは、操作レバー2Aの操作荷重を軽減する操作荷重軽減手段と、操作荷重が軽減される操作レバー2Aの操作で操作対象物を所定の状態で保持する保持手段を備える。操作機構1Aは、操作レバー2Aを矢印A1で示す所定の第1の方向に移動させる操作で、操作対象物を作動させた所定の状態とし、第1の方向と逆向きの矢印A2で示す第2の方向に移動させる操作で、操作対象物を作動させた所定の状態でロックする。   The operation mechanism 1A includes an operation load reducing unit that reduces the operation load of the operation lever 2A, and a holding unit that holds the operation target in a predetermined state by operating the operation lever 2A that reduces the operation load. The operation mechanism 1A moves the operation lever 2A in a predetermined first direction indicated by an arrow A1 to set a predetermined state in which the operation target is actuated and is indicated by an arrow A2 indicated by an arrow A2 opposite to the first direction. The operation target is locked in a predetermined state in which the operation object is operated by the operation of moving in the direction of 2.

操作機構1Aは、操作レバー2A及びリンク部材3Aにおける力の作用点及び力点と支点間距離の比で操作力軽減手段が実現され、操作レバー2Aを矢印A1で示す所定の第1の方向に移動させて、操作対象物を所定の作動状態とする操作における操作荷重が低減される。本例では、車椅子等のブレーキを作動させる操作における操作荷重が低減される。   In the operation mechanism 1A, an operation force reducing means is realized by the force application point in the operation lever 2A and the link member 3A and the ratio between the force point and the fulcrum distance, and the operation lever 2A is moved in a predetermined first direction indicated by an arrow A1. Thus, the operation load in the operation of bringing the operation object into a predetermined operating state is reduced. In this example, an operation load in an operation of operating a brake such as a wheelchair is reduced.

また、操作レバー2Aを第1の方向と逆向きの矢印A2で示す第2の方向に移動させて、操作対象物を所定の作動状態でロックする操作における操作荷重が低減される。本例では、車椅子等のブレーキを作動させて、制動状態を保持する操作における操作荷重が低減される。   Further, the operation load in the operation of locking the operation target object in a predetermined operating state by moving the operation lever 2A in the second direction indicated by the arrow A2 opposite to the first direction is reduced. In this example, an operation load in an operation of maintaining a braking state by operating a brake such as a wheelchair is reduced.

操作レバー2Aは操作部材の一例で、操作者が例えば手の指で操作する操作部20Aと、操作レバー2Aが操作される方向に応じて、操作レバー2Aの移動の支点となる支軸を切り換える支軸切換手段としての支軸切換部21Aを備える。   The operation lever 2A is an example of an operation member, and the operation unit 20A that the operator operates with, for example, a finger of the operator, and the support shaft that serves as a fulcrum of movement of the operation lever 2A are switched according to the direction in which the operation lever 2A is operated. A spindle switching portion 21A as a spindle switching means is provided.

操作レバー2Aは、操作部20Aの一方の端部に作用面22Aが設けられる。また、操作レバー2Aは、支軸切換部21Aが第1の支軸23Aによりブラケット4Aに回転可能に軸支される。更に、操作レバー2Aは、第1の支軸23Aと操作部20Aの他方の端部との間に第2の支軸24Aが設けられ、操作部20Aの一方の端部側が、第2の支軸24Aにより支軸切換部21Aに回転可能に軸支される。   The operation lever 2A is provided with an action surface 22A at one end of the operation unit 20A. The operation lever 2A is pivotally supported by the bracket 4A so that the support shaft switching portion 21A can be rotated by the first support shaft 23A. Further, the operating lever 2A is provided with a second supporting shaft 24A between the first supporting shaft 23A and the other end of the operating portion 20A, and one end of the operating portion 20A is connected to the second supporting shaft 24A. The shaft 24A is rotatably supported by the support shaft switching portion 21A.

操作レバー2Aは、第2の支軸24Aと操作部20Aの他方の端部との間で操作部20Aに押圧される押圧部25Aが支軸切換部21Aに設けられる。操作レバー2Aは、操作部20Aの他方の端部側が力点となり、操作部20Aが操作される方向に応じて、操作レバー2Aの回転動作による移動の支点となる支軸が、矢印A1で示す所定の第1の方向への回転と、第1の方向と逆向きの矢印A2で示す第2の方向の回転で切り換えられる。   In the operation lever 2A, a pressing portion 25A that is pressed by the operation portion 20A between the second support shaft 24A and the other end portion of the operation portion 20A is provided in the support shaft switching portion 21A. The operation lever 2A has a force point on the other end side of the operation unit 20A, and a support shaft serving as a fulcrum of movement by the rotation operation of the operation lever 2A according to the direction in which the operation unit 20A is operated is a predetermined indicated by an arrow A1. Switching in the first direction and in the second direction indicated by the arrow A2 opposite to the first direction.

操作レバー2Aは、矢印A1で示す所定の第1の方向には、操作部20Aで支軸切換部21Aの押圧部25Aが押圧されることで、第1の支軸23Aを支点に操作部20Aと支軸切換部21Aが一体で回転する。これに対し、第1の方向と逆向きの矢印A2で示す第2の方向には、支軸切換部21Aは回転せずに、第2の支軸24Aを支点に操作部20Aが回転する。   In the predetermined first direction indicated by the arrow A1, the operating lever 2A is pressed by the pressing portion 25A of the supporting shaft switching portion 21A by the operating portion 20A, so that the operating portion 20A has the first supporting shaft 23A as a fulcrum. And the spindle switching portion 21A rotate as a unit. In contrast, in the second direction indicated by the arrow A2 opposite to the first direction, the support switching unit 21A does not rotate, but the operation unit 20A rotates about the second support shaft 24A.

操作部20Aに設けられる作用面22Aは、矢印A1で示す第1の支軸23Aを支点にした操作レバー2Aの第1の方向への回転で、リンク部材3Aを押圧する第1の作用面26Aと、矢印A2で示す第2の支軸24Aを支点にした操作部20Aの第2の方向への回転で、リンク部材3Aを押圧する第2の作用面27Aを備える。   The action surface 22A provided in the operation portion 20A is a first action surface 26A that presses the link member 3A by the rotation in the first direction of the operation lever 2A using the first support shaft 23A indicated by the arrow A1 as a fulcrum. And a second action surface 27A that presses the link member 3A by rotation of the operation portion 20A in the second direction with the second support shaft 24A indicated by the arrow A2 as a fulcrum.

第2の作用面27Aは保持手段を構成し、第2の支軸24Aからの距離が変化する曲面、または曲面と平面の組み合わせ等で構成され、操作対象物を所定の作動状態でロックする位置で操作部20Aを保持する保持面28Aが形成される。また、第1の作用面26Aと保持面28Aの間に、操作対象物を所定の作動状態でロックする他の位置で操作部20Aを保持する中間保持面29Aが形成される。   The second acting surface 27A constitutes a holding means, and is constituted by a curved surface whose distance from the second support shaft 24A changes, or a combination of a curved surface and a flat surface, and the like, and a position where the operation target is locked in a predetermined operating state. Thus, a holding surface 28A for holding the operation portion 20A is formed. Further, an intermediate holding surface 29A that holds the operation portion 20A at another position that locks the operation target object in a predetermined operating state is formed between the first action surface 26A and the holding surface 28A.

操作レバー2Aは、第1の支軸23Aを支点とした矢印A1で示す操作部20Aと支軸切換部21が一体となった第1の方向の回転では、第1の支軸23Aを支点に変位する作用面22Aの第1の作用面26Aが、操作部20Aで受ける力をリンク部材3Aに作用させる作用点となる。また、操作レバー2Aは、第2の支軸24Aを支点とした矢印A2で示す操作部20Aの第2の方向の回転では、第2の支軸24Aを支点に変位する作用面22Aの第2の作用面27Aが、操作部20Aで受ける力をリンク部材3Aに作用させる作用点となる。   The operation lever 2A is configured so that the first support shaft 23A serves as a fulcrum in rotation in the first direction in which the operation unit 20A and the support shaft switching unit 21 indicated by an arrow A1 with the first support shaft 23A as a fulcrum are integrated. The first action surface 26A of the displacing action surface 22A serves as an action point at which the force received by the operation portion 20A acts on the link member 3A. Further, the operation lever 2A is configured such that when the operation portion 20A is rotated in the second direction indicated by the arrow A2 with the second support shaft 24A as a fulcrum, the second operation surface 22A is displaced with the second support shaft 24A as a fulcrum. The action surface 27A is an action point at which the force received by the operation unit 20A is applied to the link member 3A.

操作レバー2Aは、力点となる操作部20Aの操作点から、支点となる第1の支軸23Aまでの長さL1aより、作用点となる作用面22Aの第1の作用面26Aから第1の支軸23Aまでの長さL2aが短くなるように構成される。また、操作レバー2Aは、力点となる操作部20Aの操作点から、支点となる第2の支軸24Aまでの長さL1bより、作用点となる作用面22Aの第2の作用面27Aから第2の支軸24Aまでの長さL2bが短くなるように構成される。   The operation lever 2A has a length L1a from the operating point of the operating portion 20A serving as a power point to the first supporting shaft 23A serving as a fulcrum, from the first working surface 26A of the working surface 22A serving as the working point to the first working surface 26A. The length L2a to the support shaft 23A is configured to be short. Further, the operation lever 2A has a length L1b from the operation point of the operation unit 20A serving as a power point to the second support shaft 24A serving as a fulcrum, from the second operation surface 27A of the operation surface 22A serving as the operation point. The length L2b to the second spindle 24A is configured to be short.

リンク部材3Aは、操作レバー2Aの作用面22Aが接する押圧面30Aと、操作ワイヤ11のインナーワイヤ11Aが取り付けられるワイヤ係止部31Aを備え、第3の支軸32Aによりブラケット4Aに軸支される。   The link member 3A includes a pressing surface 30A that contacts the action surface 22A of the operation lever 2A, and a wire locking portion 31A to which the inner wire 11A of the operation wire 11 is attached, and is pivotally supported on the bracket 4A by a third support shaft 32A. The

押圧面30Aは保持手段を構成し、操作レバー2Aの作用面22Aに押圧されて力を受けると共に、接した作用面22Aが滑らかにしゅう動可能な平面または曲面、あるいは平面と曲面の組み合せ等で構成される。リンク部材3Aは、押圧面30Aと操作レバー2Aの作用面22Aの接触箇所が力点となり、操作レバー2Aが操作される方向に応じて、第1の支軸23Aを支点とした操作レバー2Aの回転で変位する作用面22Aの第1の作用面26Aからの力を受けて、第3の支軸32Aを支点に回転する。また、第2の支軸24Aを支点とした操作部20Aの回転で変位する作用面22Aの第2の作用面27Aからの力を受けて、第3の支軸32Aを支点に回転する。   The pressing surface 30A constitutes a holding means and receives a force by being pressed by the operating surface 22A of the operation lever 2A, and the contacting operating surface 22A can be smoothly slidable or a combination of a flat surface and a curved surface. Composed. In the link member 3A, the contact point between the pressing surface 30A and the operating surface 22A of the operation lever 2A serves as a power point, and the rotation of the operation lever 2A using the first support shaft 23A as a fulcrum according to the direction in which the operation lever 2A is operated. In response to the force from the first action surface 26A of the action surface 22A that is displaced by the rotation, the third support shaft 32A is rotated about the fulcrum. Further, upon receiving the force from the second action surface 27A of the action surface 22A that is displaced by the rotation of the operation portion 20A with the second support shaft 24A as a fulcrum, the third support shaft 32A is rotated about the fulcrum.

ワイヤ係止部31Aは、インナーワイヤ11Aの端部に形成されたタイコと称される円筒形状の係止部11Bが着脱及び回転可能に嵌る円筒形状に構成され、リンク部材3Aの第3の支軸32Aを支点とした回転で、インナーワイヤ11Aを引く。   31 A of wire latching parts are comprised by the cylindrical shape to which the cylindrical latching part 11B called the Tyco formed in the edge part of the inner wire 11A fits so that attachment or detachment and rotation are possible, and the 3rd support of 3 A of link members is provided. The inner wire 11A is pulled by rotation about the shaft 32A.

リンク部材3Aは、ワイヤ係止部31Aが作用点となり、力点となる押圧面30Aから支点となる第3の支軸32Aまでの長さL3と、ワイヤ係止部31Aから第3の支軸32Aまでの長さL4が同等程度、あるいはL3がL4より長くなるように構成される。   In the link member 3A, the wire locking portion 31A serves as a point of action, the length L3 from the pressing surface 30A serving as a force point to the third supporting shaft 32A serving as a fulcrum, and the wire locking portion 31A to the third supporting shaft 32A. The length L4 is about the same, or L3 is longer than L4.

ブラケット4Aは固定部材の一例で、操作者が手で把時するハンドル部5Aに取り付けられる。ハンドル部5Aには、手で把持されるグリップ50Aが取り付けられ、ブラケット4Aは、グリップ50Aの一方の端部側のハンドル部5Aに取り付けられる。   The bracket 4A is an example of a fixing member, and is attached to the handle portion 5A that is held by an operator. A grip 50A to be gripped by hand is attached to the handle portion 5A, and the bracket 4A is attached to the handle portion 5A on one end side of the grip 50A.

ブラケット4Aは、操作レバー2Aの一方の端部側である内側にリンク部材3Aが配置されるように、第1の支軸23Aと第3の支軸32Aが形成される。ブラケット4Aは、第1の支軸23Aと第3の支軸32Aの取付部が形成されることで、単一の部材で操作レバー2Aとリンク部材3Aを支持する構成とすることができる。   The bracket 4A is formed with a first support shaft 23A and a third support shaft 32A so that the link member 3A is disposed on the inner side which is one end side of the operation lever 2A. The bracket 4A can be configured to support the operation lever 2A and the link member 3A with a single member by forming the attachment portion of the first support shaft 23A and the third support shaft 32A.

これにより、操作レバー2A及びリンク部材3Aの支点と力の作用点及び力点が、リンク部材3Aの支点である第3の支軸32A、操作レバー2Aの第1の支点である第1の支軸23A、操作レバー2Aの作用点でリンク部材3Aの力点であるリンク部材3Aの押圧面30Aと操作レバー2Aの作用面22Aの接触箇所、操作レバー2Aの第2の支点である第2の支軸24Aの順で、第3の支軸32Aから操作レバー2Aの操作点である操作部20Aに向かって設けられる。   As a result, the fulcrum of the operating lever 2A and the link member 3A and the point of action and the point of force are the third supporting shaft 32A, which is the supporting point of the link member 3A, and the first supporting shaft, which is the first fulcrum of the operating lever 2A. 23A, the contact point of the pressing surface 30A of the link member 3A, which is the power point of the link member 3A at the operating point of the operating lever 2A, and the operating surface 22A of the operating lever 2A, and the second support shaft, which is the second fulcrum of the operating lever 2A In the order of 24A, the third support shaft 32A is provided toward the operation portion 20A that is the operation point of the operation lever 2A.

ブラケット4Aは、インナーワイヤ11Aが通される操作ワイヤ11のアウターワイヤ11Cを支持するアジャスタ40を備える。アジャスタ40は、ブラケット4Aからの突出量が調整されることで、ブレーキの引きしろを調整可能としている。   The bracket 4A includes an adjuster 40 that supports the outer wire 11C of the operation wire 11 through which the inner wire 11A is passed. The adjuster 40 can adjust the brake margin by adjusting the amount of protrusion from the bracket 4A.

<第1の実施の形態の操作機構の作用効果例>
図3〜図6は、第1の実施の形態の操作機構の動作の一例を示す動作説明図であり、次に、各図を参照して、第1の実施の形態の操作機構1Aの動作について説明する。操作機構1Aは、ハンドル部5Aのグリップ50Aを把持する手で、図1に示すように開いた状態の操作レバー2Aを握ることで、操作レバー2Aが矢印A1で示す第1の方向に引かれると、操作部20Aで支軸切換部21Aの押圧部25Aが押圧される。これにより、操作レバー2Aは、矢印A1で示す第1の方向に、第1の支軸23Aを支点にして操作部20Aと支軸切換部21Aが一体で回転する。
<Example of effects of the operation mechanism of the first embodiment>
3 to 6 are operation explanatory views showing an example of the operation of the operation mechanism according to the first embodiment. Next, referring to each drawing, the operation of the operation mechanism 1A according to the first embodiment will be described. Will be described. The operating mechanism 1A is a hand that holds the grip 50A of the handle portion 5A, and when the operating lever 2A is opened as shown in FIG. 1, the operating lever 2A is pulled in the first direction indicated by the arrow A1. Then, the pressing portion 25A of the support shaft switching portion 21A is pressed by the operation portion 20A. As a result, the operation lever 2A rotates integrally with the operation portion 20A and the support shaft switching portion 21A in the first direction indicated by the arrow A1 with the first support shaft 23A as a fulcrum.

リンク部材3Aは、第1の支軸23Aを支点とした操作レバー2Aの回転で変位する作用面22Aの第1の作用面26Aからの力を押圧面30Aで受けて、第3の支軸32Aを支点に回転する。   The link member 3A receives the force from the first acting surface 26A of the acting surface 22A, which is displaced by the rotation of the operation lever 2A with the first supporting shaft 23A as a fulcrum, by the pressing surface 30A, and the third supporting shaft 32A. Rotate around the fulcrum.

リンク部材3Aが回転することで、ワイヤ係止部31Aに取り付けられたインナーワイヤ11Aが引かれ、図3に示すように、操作レバー2Aを閉じるように操作することで、インナーワイヤ11Aを引いてブレーキ等を作動させることができる。   By rotating the link member 3A, the inner wire 11A attached to the wire locking portion 31A is pulled, and as shown in FIG. 3, by operating the operation lever 2A to close, the inner wire 11A is pulled. A brake etc. can be operated.

これに対し、操作機構1Aは、図1に示すように開いた状態から、操作レバー2Aが矢印A2で示す第2の方向に押されると、操作レバー2Aは、支軸切換部21Aは回転せずに、第2の支軸24Aを支点にして矢印A2で示す第2の方向に操作部20Aが回転する。   On the other hand, when the operation mechanism 1A is opened as shown in FIG. 1 and the operation lever 2A is pushed in the second direction indicated by the arrow A2, the operation lever 2A rotates the support shaft switching portion 21A. Instead, the operation portion 20A rotates in the second direction indicated by the arrow A2 with the second support shaft 24A as a fulcrum.

リンク部材3Aは、第2の支軸24Aを支点とした操作部20Aの回転で変位する作用面22Aの第2の作用面27Aからの力を押圧面30Aで受けて、第3の支軸32Aを支点に回転する。   The link member 3A receives the force from the second acting surface 27A of the acting surface 22A, which is displaced by the rotation of the operation portion 20A with the second supporting shaft 24A as a fulcrum, by the pressing surface 30A, and the third supporting shaft 32A. Rotate around the fulcrum.

リンク部材3Aが回転することで、ワイヤ係止部31Aに取り付けられたインナーワイヤ11Aが引かれ、図4に示すように、操作レバー2Aを押す方向に操作することでも、インナーワイヤ11Aを引いてブレーキ等を作動させることができる。   By rotating the link member 3A, the inner wire 11A attached to the wire locking portion 31A is pulled, and as shown in FIG. 4, the inner wire 11A is pulled by operating the operation lever 2A. A brake etc. can be operated.

操作機構1Aは、図5に示すように、作用面22Aの中間保持面29Aがリンク部材3Aの押圧面30Aに接する位置まで操作部20Aを回転させると、図示しないブレーキのバネによってブレーキを非制動状態に復元しようとする力でインナーワイヤ11Aが引かれることにより、矢印A2で示す第2の方向への操作部20Aの操作による回転方向と逆方向にリンク部材3Aを回転させようとする力で、押圧面30Aが中間保持面29Aに押圧され、中間保持面29Aの形状により、操作部20Aが中間位置で保持される。   As shown in FIG. 5, when the operation unit 20A rotates the operation unit 20A to a position where the intermediate holding surface 29A of the action surface 22A contacts the pressing surface 30A of the link member 3A, as shown in FIG. By pulling the inner wire 11A with a force to restore the state, the link member 3A is rotated in the direction opposite to the rotation direction by the operation of the operation unit 20A in the second direction indicated by the arrow A2. The pressing surface 30A is pressed by the intermediate holding surface 29A, and the operation portion 20A is held at the intermediate position by the shape of the intermediate holding surface 29A.

押圧面30Aが中間保持面29Aに押圧された状態で、リンク部材3Aが所定量回転して、インナーワイヤ11Aを引いてブレーキを作動させ、所定の制動状態、例えば、車椅子が停止した状態で保持できるように、中間保持面29A等の形状を設定すれば、操作部20Aを中間位置まで操作すると、操作部20Aから手を離しても、操作部20Aが中間位置で保持されると共に、ブレーキを作動させて、車椅子を停止できる制動状態を保持することができる。本例では、操作部20Aがハンドル部5Aと交する向きを中間位置とする。   In a state where the pressing surface 30A is pressed by the intermediate holding surface 29A, the link member 3A rotates by a predetermined amount, pulls the inner wire 11A, operates the brake, and holds in a predetermined braking state, for example, a state where the wheelchair is stopped. If the shape of the intermediate holding surface 29A or the like is set so that the operation unit 20A is operated to the intermediate position, the operation unit 20A is held at the intermediate position and the brake is applied even if the operation unit 20A is released. When activated, it is possible to maintain a braking state in which the wheelchair can be stopped. In this example, the direction in which the operation unit 20A intersects the handle unit 5A is set as an intermediate position.

操作部20Aが中間位置にある操作レバー2Aが、更に矢印A2で示す第2の方向に押されると、第2の支軸24Aを支点に操作部20Aが更に回転する。リンク部材3Aは、第2の支軸24Aを支点とした操作部20Aの回転で変位する作用面22Aの第2の作用面27Aからの力を押圧面30Aで受け、ブレーキを作動させて所定の制動状態とするように回転した所定の角度で保持される。なお、操作部20Aが中間位置にある操作レバー2Aが、更に矢印A2で示す第2の方向に押されると、制動力が強まる方向にリンク部材3Aが回転するように構成しても良い。   When the operation lever 2A having the operation unit 20A at the intermediate position is further pushed in the second direction indicated by the arrow A2, the operation unit 20A further rotates about the second support shaft 24A. The link member 3A receives the force from the second acting surface 27A of the acting surface 22A that is displaced by the rotation of the operation portion 20A with the second supporting shaft 24A as a fulcrum at the pressing surface 30A, and operates the brake to perform a predetermined operation. It is held at a predetermined angle rotated so as to be in a braking state. Note that the link member 3A may be configured to rotate in a direction in which the braking force increases when the operation lever 2A in which the operation unit 20A is in the intermediate position is further pressed in the second direction indicated by the arrow A2.

操作機構1Aは、図6に示すように、作用面22Aの保持面28Aがリンク部材3Aの押圧面30Aに接する位置まで操作部20Aを回転させると、図示しないブレーキを復元させるバネの力でインナーワイヤ11Aが引かれることにより、リンク部材3Aを回転させようとする力で、押圧面30Aが保持面28Aに押圧され、保持面28Aの形状により、操作部20Aがロック位置で保持される。   As shown in FIG. 6, when the operating portion 20A is rotated to a position where the holding surface 28A of the working surface 22A contacts the pressing surface 30A of the link member 3A, the operating mechanism 1A is rotated by the spring force that restores the brake (not shown). By pulling the wire 11A, the pressing surface 30A is pressed against the holding surface 28A by a force for rotating the link member 3A, and the operation portion 20A is held at the locked position by the shape of the holding surface 28A.

押圧面30Aが保持面28Aに押圧された状態でも、リンク部材3Aが所定量回転して、インナーワイヤ11Aを引いてブレーキを作動させ、所定の制動状態、例えば、車椅子が停止した状態で保持できるように、保持面28A等の形状を設定すれば、操作部20Aをロック位置まで操作すると、操作部20Aから手を離しても、操作部20Aがロック位置で保持されると共に、ブレーキを作動させて、停止できる制動状態を保持することができる。本例では、操作部20Aがハンドル部5Aに沿った向きをロック位置とする。   Even in a state where the pressing surface 30A is pressed by the holding surface 28A, the link member 3A rotates by a predetermined amount, pulls the inner wire 11A, operates the brake, and can be held in a predetermined braking state, for example, a state where the wheelchair is stopped. Thus, if the shape of the holding surface 28A or the like is set, when the operation unit 20A is operated to the lock position, the operation unit 20A is held at the lock position and the brake is activated even if the operation unit 20A is released. Thus, it is possible to maintain a braking state that can be stopped. In this example, the direction along the handle portion 5A of the operation unit 20A is set as the lock position.

操作レバー2Aを矢印A1で示す第1の方向に回転させて、車椅子等のブレーキを作動させる操作で、操作レバー2Aに掛かる荷重Faは、操作レバー2A及びリンク部材3Aにおける力の作用点及び力点と支点間距離の比で作用する。操作レバー2Aにおいて、力点となる操作部20Aの操作点から、支点となる第1の支軸23Aまでの長さをL1aとし、作用点となる作用面22Aの第1の作用面26Aから第1の支軸23Aまでの長さをL2aとする。リンク部材3Aにおいて、力点となる押圧面30Aから支点となる第3の支軸32Aまでの長さをL3とし、作用点となるワイヤ係止部31Aから第3の支軸32Aまでの長さをL4とする。   By rotating the operating lever 2A in the first direction indicated by the arrow A1 and operating a brake such as a wheelchair, the load Fa applied to the operating lever 2A is the force application point and force point of the operating lever 2A and the link member 3A. And the ratio of the distance between fulcrums. In the operating lever 2A, the length from the operating point of the operating portion 20A serving as the power point to the first supporting shaft 23A serving as the fulcrum is L1a, and the first working surface 26A of the working surface 22A serving as the working point is first from the first working surface 26A. The length to the support shaft 23A is L2a. In the link member 3A, the length from the pressing surface 30A serving as the power point to the third supporting shaft 32A serving as the fulcrum is L3, and the length from the wire locking portion 31A serving as the operating point to the third supporting shaft 32A is defined as L3. Let L4.

操作対象物であるブレーキを復元させるバネの力でインナーワイヤ11Aからリンク部材3Aのワイヤ係止部31Aに掛かる荷重をPとする。また、操作レバー2Aの作用点でリンク部材3Aの力点であるリンク部材3Aの押圧面30Aと操作レバー2Aの第1の作用面26Aの接触箇所に掛かる荷重をfaとする。   A load applied to the wire locking portion 31A of the link member 3A from the inner wire 11A by the force of the spring that restores the brake that is the operation target is defined as P. Further, the load applied to the contact point between the pressing surface 30A of the link member 3A, which is the power point of the link member 3A, and the first operating surface 26A of the operating lever 2A at the operating point of the operating lever 2A is represented by fa.

操作レバー2Aの操作部20Aに掛かる荷重Faは以下の(1)で求められ、リンク部材3Aの押圧面30Aに掛かる荷重faは以下の(2)式で求められる。そして(1)式に(2)式を代入することで、操作レバー2Aの操作部20Aに掛かる荷重Faとインナーワイヤ11Aからリンク部材3Aのワイヤ係止部31Aに掛かる荷重Pの関係が(3)式により求められる。   The load Fa applied to the operation portion 20A of the operation lever 2A is obtained by the following (1), and the load fa applied to the pressing surface 30A of the link member 3A is obtained by the following expression (2). Then, by substituting Equation (2) into Equation (1), the relationship between the load Fa applied to the operation portion 20A of the operation lever 2A and the load P applied to the wire locking portion 31A of the link member 3A from the inner wire 11A is (3 ).

同様に、操作レバー2Aを矢印A2で示す第2の方向に回転させて、車椅子等のブレーキを作動させて制動状態を保持する操作で、操作レバー2Aに掛かる荷重Fbは、操作レバー2Aの操作部20A及びリンク部材3Aにおける力の作用点及び力点と支点間距離の比で作用する。操作レバー2Aにおいて、力点となる操作部20Aの操作点から、支点となる第2の支軸24Aまでの長さをL1bとし、作用点となる作用面22Aの第2の作用面27Aから第2の支軸24Aまでの長さをL2bとする。リンク部材3Aにおいて、力点となる押圧面30Aから支点となる第3の支軸32Aまでの長さをL3とし、作用点となるワイヤ係止部31Aから第3の支軸32Aまでの長さをL4とする。   Similarly, by rotating the operation lever 2A in the second direction indicated by the arrow A2 and operating a brake such as a wheelchair to maintain the braking state, the load Fb applied to the operation lever 2A is determined by the operation of the operation lever 2A. The force acts on the portion 20A and the link member 3A and the ratio of the force point to the fulcrum distance acts. In the operating lever 2A, the length from the operating point of the operating portion 20A serving as the power point to the second supporting shaft 24A serving as the fulcrum is L1b, and the second working surface 27A of the working surface 22A serving as the working point is The length to the support shaft 24A is L2b. In the link member 3A, the length from the pressing surface 30A serving as the power point to the third supporting shaft 32A serving as the fulcrum is L3, and the length from the wire locking portion 31A serving as the operating point to the third supporting shaft 32A is defined as L3. Let L4.

操作対象物であるブレーキを復元させるバネの力でインナーワイヤ11Aからリンク部材3Aのワイヤ係止部31Aに掛かる荷重をPとする。また、操作レバー2Aの作用点でリンク部材3Aの力点であるリンク部材3Aの押圧面30Aと操作部20Aの第2の作用面27Aの接触箇所に掛かる荷重をfbとする。   A load applied to the wire locking portion 31A of the link member 3A from the inner wire 11A by the force of the spring that restores the brake that is the operation target is defined as P. Further, the load applied to the contact point between the pressing surface 30A of the link member 3A, which is the power point of the link member 3A, and the second operating surface 27A of the operation unit 20A at the operation point of the operation lever 2A is defined as fb.

操作レバー2Aの操作部20Aに掛かる荷重Fbは以下の(4)で求められ、リンク部材3Aの押圧面30Aに掛かる荷重fbは以下の(5)式で求められる。そして(4)式に(5)式を代入することで、操作レバー2Aの操作部20Aに掛かる荷重Fbとインナーワイヤ11Aからリンク部材3Aのワイヤ係止部31Aに掛かる荷重Pの関係が(6)式により求められる。   The load Fb applied to the operation portion 20A of the operation lever 2A is obtained by the following (4), and the load fb applied to the pressing surface 30A of the link member 3A is obtained by the following equation (5). Then, by substituting the equation (5) into the equation (4), the relationship between the load Fb applied to the operation portion 20A of the operation lever 2A and the load P applied to the wire locking portion 31A of the link member 3A from the inner wire 11A is (6 ).

Figure 2011170524
Figure 2011170524

車椅子等のブレーキを作動させる操作では、(3)式から、L1aとL3を長く、L2aとL4を短くして、L1aがL2aより長く、L3がL4より長い方が、操作レバー2Aの操作部20Aに掛かる荷重Faを低減することができる。また、L2aがL3より短い方が、荷重Faを低減することができる。   In the operation of operating a brake such as a wheelchair, from the equation (3), L1a and L3 are lengthened, L2a and L4 are shortened, L1a is longer than L2a, and L3 is longer than L4. The load Fa applied to 20A can be reduced. Further, the load Fa can be reduced when L2a is shorter than L3.

車椅子等のブレーキを作動させて制動状態を保持する操作では、(6)式から、L1bとL3を長く、L2bとL4を短くして、L1bがL2bより長く、L3がL4より長い方が、操作レバー2Aの操作部20Aに掛かる荷重Fbを低減することができる。また、L2bがL3より短い方が、荷重Fbを低減することができる。   In the operation of maintaining the braking state by operating a brake such as a wheelchair, L1b and L3 are lengthened, L2b and L4 are shortened, L1b is longer than L2b, and L3 is longer than L4 from the equation (6). The load Fb applied to the operation part 20A of the operation lever 2A can be reduced. Further, the load Fb can be reduced when L2b is shorter than L3.

操作機構1Aでは、操作レバー2A及びリンク部材3Aの支点と力の作用点及び力点が、リンク部材3Aの第3の支軸32A、操作レバー2Aの第1の支軸23A、リンク部材3Aの押圧面30Aと操作レバー2Aの作用面22Aの接触箇所の順で、第3の支軸32Aから操作レバー2Aの操作点である操作部20Aに向かって設けられることで、機構を大型化することなく、(3)式で荷重を低減する条件を満たすことが可能となる。そして、図1に示すように、操作レバー2Aが開いている握り始めの状態から荷重Faが低減し、図3に示すように操作レバー2Aが閉じるまで、荷重Faを低減することができる。   In the operation mechanism 1A, the fulcrum of the operation lever 2A and the link member 3A, the action point and the force point of the force are the third support shaft 32A of the link member 3A, the first support shaft 23A of the operation lever 2A, and the pressing of the link member 3A. By providing the surface 30A and the operating surface 22A of the operating lever 2A in the order of contact from the third support shaft 32A toward the operating portion 20A that is the operating point of the operating lever 2A, the mechanism is not enlarged. , (3), the condition for reducing the load can be satisfied. Then, as shown in FIG. 1, the load Fa can be reduced from the state where the operation lever 2A is opened, and the load Fa can be reduced until the operation lever 2A is closed as shown in FIG.

操作レバー2Aとリンク部材3Aは、回転の支点となる支軸の位置が異なり、第1の支軸23Aを支点とした操作レバー2Aの回転による作用面22Aの第1の作用面26Aの軌跡と、第3の支軸32Aを支点としたリンク部材3Aの回転による押圧面30Aの軌跡は異なる。   The operation lever 2A and the link member 3A are different in the position of a support shaft serving as a fulcrum of rotation, and the locus of the first operation surface 26A of the operation surface 22A by the rotation of the operation lever 2A with the first support shaft 23A as a fulcrum. The locus of the pressing surface 30A due to the rotation of the link member 3A with the third support shaft 32A as a fulcrum is different.

このため、第1の作用面26Aと押圧面30Aのどちらか一方が、他方の軌跡に追従するように変位する構成が必要で、操作レバー2Aとリンク部材3Aの回転で、第1の作用面26Aが押圧面30Aに沿ってしゅう動する構成としてある。操作レバー2Aを矢印A1で示す第1の方向に回転させる操作では、リンク部材3Aへの作用点となる第1の作用面26Aから支点となる第1の支軸23Aまでの長さL2aは一定である。従って、第1の作用面26Aが押圧面30Aに沿ってしゅう動すると、リンク部材3Aにおいて力点となる押圧面30Aから支点となる第3の支軸32Aまでの長さL3が変化する。   For this reason, it is necessary to have a configuration in which one of the first working surface 26A and the pressing surface 30A is displaced so as to follow the other locus, and the first working surface is obtained by the rotation of the operation lever 2A and the link member 3A. 26A is configured to slide along the pressing surface 30A. In the operation of rotating the operation lever 2A in the first direction indicated by the arrow A1, the length L2a from the first acting surface 26A serving as the working point to the link member 3A to the first supporting shaft 23A serving as the fulcrum is constant. It is. Therefore, when the first action surface 26A slides along the pressing surface 30A, the length L3 from the pressing surface 30A serving as a power point to the third supporting shaft 32A serving as a fulcrum changes in the link member 3A.

長さL3が短くなる方向に変化すると、(3)式から荷重Faが増加することが判る。そこで、操作レバー2Aとリンク部材3Aの回転で、長さL3が長くなる方向に変化し、かつ、変化量が少なくなるように、各支軸の位置、第1の作用面26A及び押圧面30Aの位置、形状が決められている。   When the length L3 changes in the direction of shortening, it can be seen from the equation (3) that the load Fa increases. Therefore, the rotation of the operation lever 2A and the link member 3A changes the length L3 in the direction in which the length L3 becomes longer and the amount of change decreases, so that the position of each spindle, the first action surface 26A, and the pressing surface 30A. The position and shape are determined.

また、操作レバー2Aが操作部20Aと支軸切換部21Aに分割され、第1の支軸23Aと操作部20Aの他方の端部との間に設けた第2の支軸24Aで軸支することで、ロック時の操作では、通常の操作時と比較して操作レバー2Aの長さを短くして操作軌跡を小さくしつつ、(6)式で荷重を低減する条件を満たすことが可能となる。   The operation lever 2A is divided into an operation unit 20A and a support shaft switching unit 21A, and is supported by a second support shaft 24A provided between the first support shaft 23A and the other end of the operation unit 20A. As a result, in the operation at the time of locking, it is possible to satisfy the condition for reducing the load by the expression (6) while shortening the length of the operation lever 2A and reducing the operation trajectory as compared with the normal operation. Become.

操作レバー2Aでは、力点となる操作部20Aの操作点から、第1の方向への回転で支点となる第1の支軸23Aまでの長さをL1aより、第2の方向への回転で支点となる第2の支軸24Aまでの長さをL1bの方が短い。一方、第2の方向への回転動作で作用点となる作用面22Aの第2の作用面27Aから第2の支軸24Aまでの長さL2bが、第1の方向への回転動作で作用点となる作用面22Aの第1の作用面26Aから第1の支軸23Aまでの長さL2aより短い。   In the operating lever 2A, the length from the operating point of the operating portion 20A serving as a power point to the first supporting shaft 23A serving as a fulcrum by rotation in the first direction is a fulcrum by rotating in the second direction from L1a. The length up to the second support shaft 24A becomes shorter in L1b. On the other hand, the length L2b from the second acting surface 27A to the second support shaft 24A of the acting surface 22A that becomes the acting point in the rotating operation in the second direction is the acting point in the rotating operation in the first direction. The length L2a from the first working surface 26A of the working surface 22A to the first support shaft 23A is shorter.

第2の方向への回転動作で操作レバー2Aに掛かる荷重Fbは、操作レバー2Aの操作部20A及びリンク部材3Aにおける力の作用点及び力点と支点間距離の比で作用するので、操作レバー2Aの長さが短くなっても、荷重を軽減することができる。   Since the load Fb applied to the operation lever 2A by the rotation operation in the second direction acts on the operation portion 20A of the operation lever 2A and the force acting point in the link member 3A and the ratio between the force point and the fulcrum distance, the operation lever 2A The load can be reduced even if the length of the is shortened.

図7は、第1の実施の形態の操作機構の効果例を示す動作説明図である。図7では、操作部20Aをロック位置まで回転させた状態を実線で示す。これに対し、操作レバー2Aを第1の支軸23Aを支点としてロック位置に相当する位置まで回転させた状態を二点鎖線で示す。操作レバー2Aが一体構造で、かつ、支軸の切換がない構成では、操作レバー2Aをロック位置に相当する位置まで回転させた状態で、ブラケット4Aからの突出量が大きくなる。このため、図7に示すように、ハンドル部5Aが屈曲した形状であると、操作レバー2Aがハンドル部5Aに干渉する可能性がある。   FIG. 7 is an operation explanatory diagram illustrating an effect example of the operation mechanism according to the first embodiment. In FIG. 7, a state where the operation unit 20 </ b> A is rotated to the lock position is indicated by a solid line. On the other hand, a state where the operation lever 2A is rotated to the position corresponding to the lock position with the first support shaft 23A as a fulcrum is indicated by a two-dot chain line. In a configuration in which the operation lever 2A is an integral structure and the support shaft is not switched, the amount of protrusion from the bracket 4A increases when the operation lever 2A is rotated to a position corresponding to the lock position. For this reason, as shown in FIG. 7, if the handle portion 5A has a bent shape, the operation lever 2A may interfere with the handle portion 5A.

これに対し、操作レバー2Aが操作部20Aと支軸切換部21Aに分割され、支軸の切換が行われる構成では、操作部20Aをロック位置まで回転させた状態で、ブラケット4Aからの突出量が小さくなる。このため、ハンドル部5Aが屈曲した形状であっても、操作レバー2Aがハンドル部5Aに干渉する可能性を低減することができる。   On the other hand, in the configuration in which the operation lever 2A is divided into the operation portion 20A and the support shaft switching portion 21A and the support shaft is switched, the amount of protrusion from the bracket 4A with the operation portion 20A rotated to the lock position. Becomes smaller. For this reason, even if the handle portion 5A has a bent shape, the possibility that the operation lever 2A interferes with the handle portion 5A can be reduced.

また、操作レバー2Aのロック位置を、操作部20Aがハンドル部5Aに沿った向きにできることで、操作レバー2Aの回転量を多くできる。これにより、操作荷重を大きくすることなく、通常のブレーキの作動時よりリンク部材3Aの回転量を大きくすることができる。これにより、操作レバー2Aをロック位置まで回転させた状態で、ブレーキの制動力を通常の制動時より強くして、かつ、ブレーキをロックすることができ、操作荷重を大きくすることなく、停止状態でのより確実な保持を行うことができる。   Further, since the operation portion 20A can be set in the direction along the handle portion 5A, the amount of rotation of the operation lever 2A can be increased. As a result, the rotation amount of the link member 3A can be increased without increasing the operation load, compared with the normal operation of the brake. As a result, with the operating lever 2A rotated to the locked position, the braking force of the brake can be made stronger than during normal braking, and the brake can be locked in a stopped state without increasing the operating load. More reliable holding can be performed.

なお、ハンドル部5Aの形状等によっては、図5に示す中間位置をロック位置とすることもできる。また操作レバー2Aを保持する位置は、作用面22Aの第2の作用面27Aの形状等により設定可能である。   Depending on the shape of the handle portion 5A and the like, the intermediate position shown in FIG. The position at which the operation lever 2A is held can be set by the shape of the second action surface 27A of the action surface 22A.

なお、操作機構1Aでは、操作レバー2Aが取り付けられるブラケットとリンク部材3Aが取り付けられるブラケットを独立した部品で構成しても良い。操作レバー2Aとリンク部材3Aを独立したブラケットで支持する構成とすることで、ブラケットの取り付け位置を調整して、操作レバー2A及びリンク部材3Aにおける力の作用点及び力点と支点間距離の比を変えることができ、荷重を調整することができる。   In the operation mechanism 1A, the bracket to which the operation lever 2A is attached and the bracket to which the link member 3A is attached may be constituted by independent parts. By configuring the operation lever 2A and the link member 3A to be supported by independent brackets, the mounting position of the bracket is adjusted, and the force application point and the ratio between the force point and the fulcrum distance in the operation lever 2A and the link member 3A are determined. It can be changed and the load can be adjusted.

<第2の実施の形態の操作機構の構成例>
図8は、第2の実施の形態の操作機構の一例を示す構成図であり、図8(a)は、第2の実施の形態の操作機構の内部構成を示す断面図、図8(b)は、操作機構の外観を示す構成図である。
<Configuration Example of Operation Mechanism of Second Embodiment>
FIG. 8 is a configuration diagram illustrating an example of an operation mechanism according to the second embodiment. FIG. 8A is a cross-sectional view illustrating an internal configuration of the operation mechanism according to the second embodiment, and FIG. ) Is a configuration diagram showing the appearance of the operation mechanism.

第2の実施の形態の操作機構1Bは、人が操作する機構に適用され、操作荷重を低減する機構を備えることで、操作者の負担を軽減する。第1の実施の形態の操作機構1Bは、例えば、車椅子等の生活支援用具で人が手により操作する機構に適用され、本例では、車椅子のブレーキを操作するブレーキレバー10Aに適用した例を示す。   The operation mechanism 1B according to the second embodiment is applied to a mechanism operated by a person, and includes a mechanism that reduces an operation load, thereby reducing the burden on the operator. The operation mechanism 1B according to the first embodiment is applied to a mechanism that is manually operated by a person using a life support tool such as a wheelchair, and in this example, the operation mechanism 1B is applied to a brake lever 10A that operates a wheelchair brake. Show.

第2の実施の形態の操作機構1Bは、操作者に操作される操作レバー2Bと、操作レバー2Bの動作を、操作対象物であるブレーキを作動させる駆動力伝達手段としての操作ワイヤ11に伝達するリンク部材3Bと、操作レバー2Bとリンク部材3Bが取り付けられるブラケット4Bを備える。   The operation mechanism 1B according to the second embodiment transmits an operation lever 2B operated by an operator and an operation of the operation lever 2B to an operation wire 11 as a driving force transmission unit that operates a brake that is an operation target. A link member 3B, and an operation lever 2B and a bracket 4B to which the link member 3B is attached.

操作機構1Bは、操作レバー2Bの操作荷重を軽減する操作荷重軽減手段と、操作荷重が軽減される操作レバー2Bの操作で操作対象物を所定の作動状態でロックする保持手段を備える。操作機構1Bは、操作レバー2Bを矢印B1で示す所定の第1の方向に移動させる操作で、操作対象物を所定の作動状態とし、第1の方向と逆向きの矢印B2で示す第2の方向に移動させる操作で、操作対象物を所定の作動状態でロックする。   The operation mechanism 1B includes an operation load reducing unit that reduces the operation load of the operation lever 2B, and a holding unit that locks the operation object in a predetermined operating state by operating the operation lever 2B that reduces the operation load. The operation mechanism 1B moves the operation lever 2B in a predetermined first direction indicated by an arrow B1, thereby setting the operation target in a predetermined operating state and performing a second operation indicated by an arrow B2 opposite to the first direction. The operation object is locked in a predetermined operating state by the operation of moving in the direction.

操作機構1Bは、操作レバー2B及びリンク部材3Bにおける力の作用点及び力点と支点間距離の比で操作力軽減手段が実現され、操作レバー2Bを矢印B1で示す所定の第1の方向に移動させて、操作対象物を所定の作動状態とする操作における操作荷重が低減される。本例では、車椅子等のブレーキを作動させる操作における操作荷重が低減される。   In the operation mechanism 1B, an operation force reducing means is realized by the force application point of the operation lever 2B and the link member 3B and the ratio between the force point and the fulcrum distance, and the operation lever 2B is moved in a predetermined first direction indicated by an arrow B1. Thus, the operation load in the operation of bringing the operation object into a predetermined operating state is reduced. In this example, an operation load in an operation of operating a brake such as a wheelchair is reduced.

また、操作レバー2Bを第1の方向と逆向きの矢印B2で示す第2の方向に移動させて、操作対象物を所定の作動状態でロックする操作における操作荷重が低減される。本例では、車椅子等のブレーキを作動させて、制動状態を保持する操作における操作荷重が低減される。   Further, the operation load in the operation of locking the operation object in a predetermined operating state by moving the operation lever 2B in the second direction indicated by the arrow B2 opposite to the first direction is reduced. In this example, an operation load in an operation of maintaining a braking state by operating a brake such as a wheelchair is reduced.

操作レバー2Bは操作部材の一例で、操作者が例えば手の指で操作する操作部20Bの一方の端部側が、第1の支軸21B及び第2の支軸22Bによりブラケット4Bに軸支される。操作レバー2Bは、操作部20Bの他方の端部側が力点となり、操作部20Bで受ける力によって第1の支軸21Bまたは第2の支軸22Bを支点として回転する。すなわち、操作機構1Bは、操作レバー2Bが操作される方向に応じて、操作レバー2Bの回転動作による移動の支点となる支軸が切り換えられ、矢印B1で示す所定の第1の方向への回転では第1の支軸21Bが支点となり、第1の方向と逆向きの矢印B2で示す第2の方向の回転では第2の支軸22Bが支点となる。   The operation lever 2B is an example of an operation member, and one end side of the operation unit 20B that is operated by the operator with, for example, a finger of the operator is pivotally supported on the bracket 4B by the first support shaft 21B and the second support shaft 22B. The The operation lever 2B has the other end side of the operation unit 20B as a power point, and rotates with the first support shaft 21B or the second support shaft 22B as a support point by the force received by the operation unit 20B. That is, the operation mechanism 1B switches the support shaft as a fulcrum of movement by the rotation operation of the operation lever 2B according to the direction in which the operation lever 2B is operated, and rotates in the predetermined first direction indicated by the arrow B1. Then, the first support shaft 21B serves as a fulcrum, and the second support shaft 22B serves as a fulcrum in the rotation in the second direction indicated by the arrow B2 opposite to the first direction.

操作レバー2Bは、操作部20B及び第2の支軸22Bと第1の支軸21Bの間に作用ピン23Bを備える。作用ピン23Bは保持手段を構成し、第1の支軸21Bを支点とした操作レバー2Bの回転で変位し、操作部20Bで受ける力をリンク部材3Bに作用させる作用点となる。また、作用ピン23Bは、第2の支軸22Bを支点とした操作レバー2Bの回転で変位し、操作部20Bで受ける力をリンク部材3Bに作用させる作用点となる。   The operation lever 2B includes an operation pin 23B between the operation unit 20B and the second support shaft 22B and the first support shaft 21B. The action pin 23B constitutes a holding means, which is displaced by the rotation of the operation lever 2B with the first support shaft 21B as a fulcrum, and serves as an action point that causes the force received by the operation part 20B to act on the link member 3B. The action pin 23B is displaced by the rotation of the operation lever 2B with the second support shaft 22B as a fulcrum, and serves as an action point that causes the force received by the operation unit 20B to act on the link member 3B.

操作レバー2Bは、力点となる操作部20Bの操作点から、矢印B1で示す第1の方向への回転で支点となる第1の支軸21Bまでの長さL1aより、作用点となる作用ピン23Bから第1の支軸21Bまでの長さL2aが短くなるように構成される。また、操作レバー2Bは、力点となる操作部20Bの操作点から、矢印B2で示す第2の方向への回転で支点となる第2の支軸22Bまでの長さL1bより、作用点となる作用ピン23Bから第2の支軸22Bまでの長さL2bが短くなるように構成される。   The operation lever 2B is an action pin that becomes an action point from a length L1a from the operation point of the operation part 20B that becomes a power point to the first support shaft 21B that becomes a fulcrum by rotation in the first direction indicated by the arrow B1. The length L2a from 23B to the first support shaft 21B is configured to be short. Further, the operating lever 2B becomes an operating point from a length L1b from the operating point of the operating unit 20B that becomes a power point to the second supporting shaft 22B that becomes a fulcrum by rotation in the second direction indicated by the arrow B2. The length L2b from the action pin 23B to the second support shaft 22B is configured to be short.

リンク部材3Bは、操作レバー2Bの作用ピン23Bが接する押圧面30Bと、操作ワイヤ11のインナーワイヤ11Aが取り付けられるワイヤ係止部31Bを備え、第3の支軸32Bによりブラケット4Bに軸支される。   The link member 3B includes a pressing surface 30B with which the action pin 23B of the operation lever 2B contacts, and a wire locking portion 31B to which the inner wire 11A of the operation wire 11 is attached, and is pivotally supported on the bracket 4B by the third support shaft 32B. The

押圧面30Bは保持手段を構成し、操作レバー2Bの作用ピン23Bに押圧されて力を受けると共に、接した作用ピン23Bが滑らかにしゅう動可能な平面または曲面で構成される。リンク部材3Bは、押圧面30Bと操作レバー2Bの作用ピン23Bの接触箇所が力点となり、第1の支軸21Bを支点とした操作レバー2Bの回転で変位する作用ピン23Bからの力を受けて、第3の支軸32Bを支点に回転する。また、第2の支軸22Bを支点とした操作レバー2Bの回転で変位する作用ピン23Bからの力を受けて、第3の支軸32Bを支点に回転する。   The pressing surface 30B constitutes a holding means, and is configured by a flat surface or a curved surface on which the acting pin 23B in contact with the acting pin 23B of the operation lever 2B receives a force and can smoothly slide. The link member 3B receives a force from the action pin 23B that is displaced by the rotation of the operation lever 2B with the first support shaft 21B as a fulcrum, with the contact point between the pressing surface 30B and the action pin 23B of the operation lever 2B serving as a power point. The third support shaft 32B is rotated around the fulcrum. Further, upon receiving a force from the action pin 23B that is displaced by the rotation of the operation lever 2B with the second support shaft 22B as a fulcrum, the third support shaft 32B is rotated about the fulcrum.

ワイヤ係止部31Bは、インナーワイヤ11Aの端部に形成されたタイコと称される円筒形状の係止部11Bが着脱及び回転可能に嵌る円筒形状に構成され、リンク部材3Bの第3の支軸32Bを支点とした回転で、インナーワイヤ11Aを引く。   The wire locking portion 31B is configured in a cylindrical shape into which a cylindrical locking portion 11B called a tie formed at the end of the inner wire 11A is detachably and rotatably fitted, and the third support of the link member 3B. The inner wire 11A is pulled by rotation about the shaft 32B.

リンク部材3Bは、ワイヤ係止部31Bが作用点となり、力点となる押圧面30Bから支点となる第3の支軸32Bまでの長さL3と、ワイヤ係止部31Bから第3の支軸32Bまでの長さL4が同等程度、あるいはL3がL4より長くなるように構成される。   In the link member 3B, the wire locking portion 31B serves as an action point, and the length L3 from the pressing surface 30B serving as a power point to the third supporting shaft 32B serving as a fulcrum, and the wire locking portion 31B to the third supporting shaft 32B. The length L4 is about the same, or L3 is longer than L4.

ブラケット4Bは固定部材の一例で、操作者が手で把時するハンドル部5Aに取り付けられる。ハンドル部5Aには、手で把持されるグリップ50Aが取り付けられ、ブラケット4Bは、グリップ50Aの一方の端部側のハンドル部5Aに取り付けられる。   The bracket 4B is an example of a fixing member, and is attached to a handle portion 5A that is held by an operator. A grip 50A that is gripped by hand is attached to the handle portion 5A, and the bracket 4B is attached to the handle portion 5A on one end side of the grip 50A.

ブラケット4Aは、第1の支軸21Bを支持する第1の軸支持部40Bと、第2の支軸22Bを支持する第2の軸支持部41Bを備える。第1の軸支持部40Bと第2の軸支持部41Bは支軸切換手段の一例で、第1の軸支持部40Bは、第2の支軸22Bを支点とした操作レバー2Bの回転による第1の支軸21Bの軌跡に沿った長穴で構成される。第2の軸支持部41Bは、第1の支軸21Bを支点とした操作レバー2Bの回転による第2の支軸22Bの軌跡に沿った長穴で構成される。   The bracket 4A includes a first shaft support portion 40B that supports the first support shaft 21B, and a second shaft support portion 41B that supports the second support shaft 22B. The first shaft support portion 40B and the second shaft support portion 41B are an example of support shaft switching means, and the first shaft support portion 40B is a first shaft that is rotated by the operation lever 2B with the second support shaft 22B as a fulcrum. It is composed of an elongated hole along the trajectory of one spindle 21B. The second shaft support portion 41B is configured by an elongated hole along the locus of the second support shaft 22B by the rotation of the operation lever 2B with the first support shaft 21B as a fulcrum.

これにより、操作レバー2B及びリンク部材3Bの支点と力の作用点及び力点が、リンク部材3Bの支点である第3の支軸32B、操作レバー2Bの支点である第1の支軸21B、操作レバー2Bの作用点でリンク部材3Bの力点であるリンク部材3Bの押圧面30Bと操作レバー2Bの作用ピン23Bの接触箇所、操作レバー2Bの支点である第2の支軸22Bの順で、第3の支軸32Bから操作レバー2Bの操作点である操作部20Bに向かって設けられる。   As a result, the fulcrum of the operating lever 2B and the link member 3B, the point of action of the force and the force point are the third supporting shaft 32B that is the fulcrum of the link member 3B, the first supporting shaft 21B that is the fulcrum of the operating lever 2B, and the operation In the order of the contact point of the pressing surface 30B of the link member 3B, which is the force point of the link member 3B, and the action pin 23B of the operation lever 2B, and the second support shaft 22B, which is the fulcrum of the operation lever 2B, at the action point of the lever 2B. The third support shaft 32B is provided toward the operation portion 20B which is the operation point of the operation lever 2B.

ブラケット4Bは、インナーワイヤ11Aが通される操作ワイヤ11のアウターワイヤ11Cを支持するアジャスタ42を備える。アジャスタ42は、ブラケット4Bからの突出量が調整されることで、ブレーキの引きしろを調整可能としている。   The bracket 4B includes an adjuster 42 that supports the outer wire 11C of the operation wire 11 through which the inner wire 11A is passed. The adjuster 42 can adjust the brake margin by adjusting the amount of protrusion from the bracket 4B.

<第2の実施の形態の操作機構の作用効果例>
図9〜図10は、第2の実施の形態の操作機構の動作の一例を示す動作説明図であり、次に、各図を参照して、第2の実施の形態の操作機構1Bの動作について説明する。第2の実施の形態の操作機構1Bは、ハンドル部5Aのグリップ50Aを把持する手で、図8に示すように開いた状態の操作レバー2Bを握ることで、操作レバー2Bが矢印B1で示す第1の方向に引かれると、第1の支軸21Bが第1の軸支持部40Bの一方の端部に押し付けられて移動が規制されることで、第2の支軸22Bが第2の軸支持部41Bに沿って移動して、操作レバー2Bは第1の支軸21Bを支点に回転する。
<Examples of the effects of the operation mechanism of the second embodiment>
9 to 10 are operation explanatory views showing an example of the operation of the operation mechanism according to the second embodiment. Next, with reference to each drawing, the operation of the operation mechanism 1B according to the second embodiment will be described. Will be described. The operating mechanism 1B of the second embodiment is a hand that holds the grip 50A of the handle portion 5A, and the operating lever 2B is indicated by an arrow B1 by holding the operating lever 2B in an open state as shown in FIG. When pulled in the first direction, the first support shaft 21B is pressed against one end of the first shaft support portion 40B to restrict movement, so that the second support shaft 22B is moved to the second direction. Moving along the shaft support portion 41B, the operation lever 2B rotates about the first support shaft 21B.

リンク部材3Bは、第1の支軸21Bを支点とした操作レバー2Bの回転で変位する作用ピン23Bからの力を押圧面30Bで受けて、第3の支軸32Bを支点に回転する。   The link member 3B receives the force from the action pin 23B that is displaced by the rotation of the operation lever 2B with the first support shaft 21B as a fulcrum at the pressing surface 30B, and rotates around the third support shaft 32B.

リンク部材3Bが回転することで、ワイヤ係止部31Bに取り付けられたインナーワイヤ11Aが引かれ、図9に示すように、操作レバー2Bを閉じるように操作することで、インナーワイヤ11Aを引いてブレーキ等を作動させることができる。   By rotating the link member 3B, the inner wire 11A attached to the wire locking portion 31B is pulled, and as shown in FIG. 9, the operation lever 2B is operated to close, thereby pulling the inner wire 11A. A brake etc. can be operated.

これに対し、操作機構1Bは、図8に示すように開いた状態から、操作レバー2Bが矢印B2で示す第2の方向に押されると、第2の支軸22Bが第2の軸支持部41Bの一方の端部に押し付けられて移動が規制されることで、第1の支軸21Bが第1の軸支持部40Bに沿って移動して、操作レバー2Bは第2の支軸22Bを支点に回転する。   In contrast, when the operation lever 2B is pushed in the second direction indicated by the arrow B2 from the opened state as shown in FIG. 8, the second support shaft 22B is moved to the second shaft support portion. Since the movement is restricted by being pressed against one end of 41B, the first support shaft 21B moves along the first shaft support portion 40B, and the operation lever 2B moves the second support shaft 22B. Rotate to fulcrum.

リンク部材3Bは、第2の支軸22Bを支点とした操作レバー2Bの回転で変位する作用ピン23Bからの力を押圧面30Bで受けて、第3の支軸32Bを支点に回転する。   The link member 3B receives the force from the action pin 23B that is displaced by the rotation of the operation lever 2B with the second support shaft 22B as a fulcrum at the pressing surface 30B, and rotates around the third support shaft 32B.

リンク部材3Bが回転することで、ワイヤ係止部31Bに取り付けられたインナーワイヤ11Aが引かれ、図10に示すように、操作レバー2Bを押す方向に操作することでも、インナーワイヤ11Aを引いてブレーキ等を作動させることができる。   By rotating the link member 3B, the inner wire 11A attached to the wire locking portion 31B is pulled. As shown in FIG. 10, the inner wire 11A is pulled by operating the operation lever 2B. A brake etc. can be operated.

操作機構1Bは、図10に示すように、矢印B2で示す第2の方向に所定の位置まで操作レバー2Bを回転させると、図示しないブレーキのバネでインナーワイヤ11Aが引かれることでリンク部材3Bを回転させることによる押圧面30Bの変位の方向に対し、第1の支軸21Bと作用ピン23Bが略直線上に並ぶような位置関係となる。これにより、図示しないブレーキが復元しようとする力で押圧面30Bが作用ピン23Bに押圧されると、押圧面30Bの形状と、第1の支軸21Bと作用ピン23Bの位置関係により、操作レバー2Bが所定のロック位置で保持される。   As shown in FIG. 10, when the operating lever 2B is rotated to a predetermined position in the second direction indicated by the arrow B2, the operating mechanism 1B is linked to the link member 3B by pulling the inner wire 11A by a brake spring (not shown). The positional relationship is such that the first support shaft 21B and the action pin 23B are aligned on a substantially straight line with respect to the direction of displacement of the pressing surface 30B by rotating the. Thereby, when the pressing surface 30B is pressed against the action pin 23B by a force that a brake (not shown) tries to restore, the operation lever is determined by the shape of the pressing surface 30B and the positional relationship between the first support shaft 21B and the action pin 23B. 2B is held at a predetermined lock position.

操作レバー2Bをロック位置まで回転させた状態で、リンク部材3Bが所定量回転して、インナーワイヤ11Aを引いてブレーキを作動させ、所定の制動状態、例えば、車椅子が停止した状態で保持できるように、押圧面30Bの形状と、第1の支軸21Bと作用ピン23Bの位置関係等を設定すれば、操作レバー2Bをロック位置まで操作すると、操作レバー2Bから手を離しても、操作レバー2Bがロック位置で保持されると共に、ブレーキを作動させて、停止できる制動状態を保持することができる。   With the operation lever 2B rotated to the lock position, the link member 3B rotates by a predetermined amount, pulls the inner wire 11A, operates the brake, and can be held in a predetermined braking state, for example, a state where the wheelchair is stopped. In addition, if the shape of the pressing surface 30B and the positional relationship between the first support shaft 21B and the action pin 23B are set, the operation lever 2B is operated to the lock position, and the operation lever 2B is released even when the operation lever 2B is released. While 2B is held in the locked position, it is possible to hold a braking state in which the brake can be operated and stopped.

操作レバー2Bを矢印B1で示す第1の方向に回転させて、車椅子等のブレーキを作動させる操作で、操作レバー2Bに掛かる荷重Faは、操作レバー2B及びリンク部材3Bにおける力の作用点及び力点と支点間距離の比で作用する。操作レバー2Bの操作部20Bに掛かる荷重Faとインナーワイヤ11Aからリンク部材3Bのワイヤ係止部31Bに掛かる荷重Pの関係は、第1の実施の形態の操作機構1Aと同様に、上述した(3)式により求められる。   By rotating the operating lever 2B in the first direction indicated by the arrow B1 and operating a brake such as a wheelchair, the load Fa applied to the operating lever 2B is the point of action and the point of force applied to the operating lever 2B and the link member 3B. And the ratio of the distance between fulcrums. The relationship between the load Fa applied to the operation portion 20B of the operation lever 2B and the load P applied to the wire locking portion 31B of the link member 3B from the inner wire 11A has been described above, as in the operation mechanism 1A of the first embodiment ( 3) It is calculated | required by Formula.

同様に、操作レバー2Bを矢印B2で示す第2の方向に回転させて、車椅子等のブレーキを作動させて制動状態を保持する操作で、操作レバー2Bに掛かる荷重Fbは、操作レバー2B及びリンク部材3Bにおける力の作用点及び力点と支点間距離の比で作用する。操作レバー2Bの操作部20Bに掛かる荷重Fbとインナーワイヤ11Aからリンク部材3Bのワイヤ係止部31Bに掛かる荷重Pの関係は、第1の実施の形態の操作機構1Aと同様に、上述した(6)式により求められる。   Similarly, when the operation lever 2B is rotated in the second direction indicated by the arrow B2 to operate a brake such as a wheelchair to maintain the braking state, the load Fb applied to the operation lever 2B is determined by the operation lever 2B and the link. The force acts on the member 3B and the ratio of the force point to the fulcrum distance. The relationship between the load Fb applied to the operation portion 20B of the operation lever 2B and the load P applied to the wire locking portion 31B of the link member 3B from the inner wire 11A has been described above, as in the operation mechanism 1A of the first embodiment ( 6) It is calculated | required by Formula.

第2の実施の形態の操作機構1Bでも、車椅子等のブレーキを作動させる操作では、(3)式から、L1aとL3を長く、L2aとL4を短くして、L1aがL2aより長く、L3がL4より長い方が、操作レバー2Bの操作部20Bに掛かる荷重Faを低減することができる。また、L2aがL3より短い方が、荷重Faを低減することができる。   Even in the operation mechanism 1B of the second embodiment, in the operation of operating a brake such as a wheelchair, L1a and L3 are lengthened, L2a and L4 are shortened, L1a is longer than L2a, and L3 is The load Fa applied to the operation portion 20B of the operation lever 2B can be reduced when the length is longer than L4. Further, the load Fa can be reduced when L2a is shorter than L3.

車椅子等のブレーキを作動させて制動状態を保持する操作では、(6)式から、L1bとL3を長く、L2bとL4を短くして、L1bがL2bより長く、L3がL4より長い方が、操作レバー2Bの操作部20Bに掛かる荷重Fbを低減することができる。また、L2bがL3より短い方が、荷重Fbを低減することができる。   In the operation of maintaining the braking state by operating a brake such as a wheelchair, L1b and L3 are lengthened, L2b and L4 are shortened, L1b is longer than L2b, and L3 is longer than L4 from the equation (6). The load Fb applied to the operation part 20B of the operation lever 2B can be reduced. Further, the load Fb can be reduced when L2b is shorter than L3.

第2の実施の形態の操作機構1Bでは、操作レバー2Bが操作される方向に応じて、操作レバー2Bの回転動作の支点となる支軸が切り換えられ、矢印B2で示す第2の方向の回転で支点となる第2の支軸22Bが、第1の支軸21Bと操作部20Bの他方の端部との間に設けられることで、ロック時の操作では、通常の操作時と比較して操作レバー2Bの支軸からの長さを短くして操作軌跡を小さくしつつ、(6)式で荷重を低減する条件を満たすことが可能となる。   In the operation mechanism 1B according to the second embodiment, the support shaft as a fulcrum of the rotation operation of the operation lever 2B is switched according to the direction in which the operation lever 2B is operated, and the rotation in the second direction indicated by the arrow B2 is performed. Since the second support shaft 22B serving as a fulcrum is provided between the first support shaft 21B and the other end of the operation portion 20B, the operation at the time of locking is compared with that at the time of normal operation. It is possible to satisfy the condition for reducing the load by the expression (6) while shortening the length of the operation lever 2B from the support shaft to reduce the operation locus.

操作レバー2Bでは、力点となる操作部20Bの操作点から、第1の方向への回転で支点となる第1の支軸21Bまでの長さをL1aより、第2の方向への回転で支点となる第2の支軸22Bまでの長さをL1bの方が短い。一方、作用点となる作用ピン23Bから第2の支軸22Bまでの長さL2bが、作用ピン23Bから第1の支軸21Bまでの長さL2aより短い。   In the operation lever 2B, the length from the operation point of the operation unit 20B as a power point to the first support shaft 21B as a fulcrum by rotation in the first direction is a fulcrum by rotation in the second direction from L1a. L1b is shorter in length to the second support shaft 22B. On the other hand, the length L2b from the action pin 23B serving as the action point to the second support shaft 22B is shorter than the length L2a from the action pin 23B to the first support shaft 21B.

第2の方向への回転動作で操作レバー2Bに掛かる荷重Fbは、操作レバー2B及びリンク部材3Bにおける力の作用点及び力点と支点間距離の比で作用するので、操作レバー2Bの支軸からの長さが短くなっても、荷重を軽減することができる。また、一体構造の操作レバー2Bで、支軸の切り換えによりレバー長を短くしているので、部品数を減らして構造を単純にすることができる。なお、第2の実施の形態の操作機構1Bにおいて、押圧面30Bに作用ピン23Bの移動を規制する中間保持面を形成して、操作レバー2Bを所定の中間位置で保持できるようにしてもよい。   Since the load Fb applied to the operation lever 2B by the rotation operation in the second direction acts on the operation lever 2B and the link member 3B with the force acting point and the ratio between the force point and the fulcrum distance, The load can be reduced even if the length of the is shortened. Further, since the lever length is shortened by switching the support shaft in the integral operation lever 2B, the number of parts can be reduced and the structure can be simplified. In the operation mechanism 1B of the second embodiment, an intermediate holding surface that restricts the movement of the action pin 23B may be formed on the pressing surface 30B so that the operation lever 2B can be held at a predetermined intermediate position. .

<本実施の形態の生活支援用具の構成例>
次に、本実施の形態の生活支援用具の一例として、介護等で用いられる福祉用具を例に説明する。図11は、本実施の生活支援用具としての福祉用具である車椅子の一例を示す構成図である。車椅子6は、フレーム6Aと、フレーム6Aに取り付けられた椅子部7と、フレーム6Aに取り付けられた前輪8と、フレーム6Aに取り付けられた後輪9を備える。
<Configuration example of life support tool of the present embodiment>
Next, as an example of the life support tool of the present embodiment, a welfare tool used for nursing care or the like will be described as an example. FIG. 11 is a configuration diagram illustrating an example of a wheelchair that is a welfare tool as a life support tool of the present embodiment. The wheelchair 6 includes a frame 6A, a chair portion 7 attached to the frame 6A, a front wheel 8 attached to the frame 6A, and a rear wheel 9 attached to the frame 6A.

フレーム6Aは、例えば、金属製のパイプを組み合わせて構成され、椅子部7を構成する座面70を支持する座面支持部60と、椅子部7を構成する背面71を支持する背面支持部61を備える。また、フレーム6Aは、背面支持部61に第1のハンドル部62Aを備える。第1のハンドル部62Aは、例えば、背面支持部61から後方に突出する形態で、図1及び図8等で説明したハンドル部5Aを構成する。   For example, the frame 6 </ b> A is configured by combining metal pipes, and a seat surface support portion 60 that supports the seat surface 70 that constitutes the chair portion 7, and a back surface support portion 61 that supports the back surface 71 that constitutes the chair portion 7. Is provided. In addition, the frame 6A includes a first handle 62A on the back support 61. The first handle portion 62A, for example, is configured to protrude rearward from the back surface support portion 61, and constitutes the handle portion 5A described with reference to FIGS.

本例の車椅子6は、椅子部7の背面71を図11に二点鎖線で示すように可倒とするいわゆるリクライニング機構を備えるため、座面支持部60と背面支持部61が可倒支点60aで可倒可能に連結されている。また、背面支持部61を支持する油圧シリンダ63を備える。更に、背面支持部61を倒した状態での操作を容易にするため、背面支持部61の上端に第2のハンドル部62Bを備える。第2のハンドル部62Bは、例えば、背面支持部61の上部から前方に突出する形態である。   Since the wheelchair 6 of the present example includes a so-called reclining mechanism that makes the back surface 71 of the chair portion 7 tiltable as shown by a two-dot chain line in FIG. 11, the seat surface support portion 60 and the back surface support portion 61 have a tiltable fulcrum 60a. It is connected in a collapsible manner. In addition, a hydraulic cylinder 63 that supports the back support 61 is provided. Further, a second handle portion 62B is provided at the upper end of the back surface support portion 61 in order to facilitate the operation in a state where the back surface support portion 61 is tilted. For example, the second handle portion 62B protrudes forward from the upper portion of the back support portion 61.

前輪8は、車椅子6を任意の方向に進行できるようにするため、自在キャスターの機能を備えて回転可能に取り付けられる。後輪9は、ハブ90が回転可能にフレーム6Aに支持される。   The front wheel 8 is rotatably mounted with a function of a free caster so that the wheelchair 6 can be advanced in an arbitrary direction. The rear wheel 9 is supported by the frame 6A so that the hub 90 can rotate.

車椅子6は、主に停止を目的とした制動のため、後輪9に作動するブレーキ91を備える。ブレーキ91は、例えば、円筒形の回転体の外周を帯状の摩擦材で締め付ける形式のバンドブレーキがハブ90に取り付けられる。なお、ブレーキ91としては、ハブ90に取り付けられるディスクブレーキや、タイヤ92が取り付けられたリム93に作用するブレーキでも良い。なお、車椅子6は、ブレーキ91とは別に、静止状態を保持するためのハンドブレーキ94を備えても良い。   The wheelchair 6 includes a brake 91 that operates on the rear wheel 9 for braking mainly for the purpose of stopping. As the brake 91, for example, a band brake of a type in which the outer periphery of a cylindrical rotating body is fastened with a belt-shaped friction material is attached to the hub 90. The brake 91 may be a disc brake attached to the hub 90 or a brake acting on a rim 93 to which a tire 92 is attached. In addition, the wheelchair 6 may be provided with a hand brake 94 for maintaining a stationary state separately from the brake 91.

車椅子6は、ブレーキ91を操作する機構として、図1等で説明した第1の実施の形態の操作機構1A、図8等で説明した第2の実施の形態の操作機構1Bを適用したブレーキレバー10Aを、第1のハンドル部62Aに備える。   The wheelchair 6 is a brake lever to which the operation mechanism 1A according to the first embodiment described with reference to FIG. 1 and the operation mechanism 1B according to the second embodiment described with reference to FIG. 10A is provided in the first handle portion 62A.

また、車椅子6は、リクライニング機構を作動させる油圧シリンダ63を操作する機構として、操作荷重軽減手段を備える共に保持手段を省略した操作機構を適用したリクライニングレバー10Bを第1のハンドル部62Aに備える。   In addition, the wheelchair 6 includes a reclining lever 10 </ b> B that includes an operation load reducing unit and an operation mechanism that omits the holding unit as a mechanism for operating the hydraulic cylinder 63 that operates the reclining mechanism, in the first handle portion 62 </ b> A.

ブレーキレバー10Aは、ブレーキ91と操作ワイヤ11で接続され、図1等で説明したインナーワイヤを引くことで、ブレーキ91が作動する。また、リクライニングレバー10Bは、油圧シリンダ63と操作ワイヤ11で接続され、インナーワイヤを引くことで油圧シリンダ63が作動する。   The brake lever 10A is connected to the brake 91 by the operation wire 11, and the brake 91 is operated by pulling the inner wire described in FIG. The reclining lever 10B is connected to the hydraulic cylinder 63 by the operation wire 11, and the hydraulic cylinder 63 is operated by pulling the inner wire.

操作機構1Aまたは操作機構1Bを適用したブレーキレバー10Aは、操作レバー2Aまたは操作レバー2Bが開いている握り始めの状態から荷重Faが低減し、操作レバー2Aが閉じるまで、荷重Faを低減することができる。これにより、軽い力で操作レバーを握り、十分な制動力を得ることができるので、操作者の負担を軽減することができる。特に、握力が弱い人でも、十分な制動力を得ることができる。また、ブレーキ91は、既存のブレーキを用いることができ、負担の軽減を低コストで実現できる。   The brake lever 10A to which the operation mechanism 1A or the operation mechanism 1B is applied reduces the load Fa until the operation lever 2A is closed until the load Fa is reduced from the gripping start state where the operation lever 2A or the operation lever 2B is open. Can do. Accordingly, the operation lever can be grasped with a light force and a sufficient braking force can be obtained, so that the burden on the operator can be reduced. In particular, even a person with a weak grip can obtain a sufficient braking force. Moreover, the brake 91 can use the existing brake, and can implement | achieve reduction of a burden at low cost.

また、操作機構1Aまたは操作機構1Bを適用したブレーキレバー10Aは、ブレーキを停止できる制動状態でロックする操作を始める状態から操作レバー2Aまたは操作レバー2Bを操作する荷重Fbが低減し、操作レバー2A,2Bがロック位置に移動するまで、荷重Fbを低減することができる。これにより、軽い力で操作レバーを操作してロック状態にすることができるので、操作者の負担を軽減することができる。特に、握力が弱い人でも、容易にロック状態にすることができる。ハンドブレーキ94は、車椅子6に座った使用者の操作に適した位置に設けられる。このため、第1のハンドル部62Aを持って車椅子6を押す等の通常の操作を行う介護者等の操作者にとっては操作がしづらい。そこで、ブレーキレバー10Aにブレーキをロックする保持手段を備えると共に、操作力軽減手段を備えることで、ブレーキをロック状態とする操作が容易に行える。   In addition, the brake lever 10A to which the operation mechanism 1A or the operation mechanism 1B is applied reduces the load Fb for operating the operation lever 2A or the operation lever 2B from the state where the operation of locking in the braking state where the brake can be stopped is reduced, and the operation lever 2A. , 2B can be reduced until the load Fb moves to the locked position. Thereby, the operation lever can be operated with a light force to be in the locked state, so that the burden on the operator can be reduced. In particular, even a person with a weak grip can be easily locked. The hand brake 94 is provided at a position suitable for the operation of the user sitting on the wheelchair 6. For this reason, it is difficult for an operator such as a caregiver who performs a normal operation such as pushing the wheelchair 6 while holding the first handle 62A. Therefore, the brake lever 10A is provided with a holding means for locking the brake, and an operation force reducing means is provided, so that the operation for making the brake locked can be easily performed.

車椅子6のブレーキは、速度調整の制動より、確実な停止のための制動を目的としている。操作機構1Aまたは操作機構1Bを適用したブレーキレバー10Aは、操作レバー2A等のストロークが長くなるが、自転車に適用されるブレーキの操作感と比較して、軽い荷重で操作レバーを握りきるような操作感を与えるほうが、確実な制動を行うことができる。特に、車椅子6が介護に用いられ、操作者も高齢者であるような場合、操作者の握力が弱くなっている場合がある。このような場合、一般的な自転車のブレーキレバーの調整法のように、ブレーキレバーのストロークの半分程度の位置を制動位置とすると、制動位置では十分な力でブレーキレバーを握ることができ難い。これに対して、軽い荷重で操作レバーを握りきるような操作感を与えると、制動位置で十分な力でブレーキレバーを握ることができ、確実な制動を行うことができる。   The brake of the wheelchair 6 is intended for braking for a reliable stop rather than braking for speed adjustment. The brake lever 10A to which the operation mechanism 1A or the operation mechanism 1B is applied has a longer stroke of the operation lever 2A or the like. However, the brake lever 10A has a lighter load than the brake operation feeling applied to the bicycle. Better braking can be achieved by giving an operational feeling. In particular, when the wheelchair 6 is used for care and the operator is also an elderly person, the grip strength of the operator may be weakened. In such a case, if the position of about half the stroke of the brake lever is set as the braking position as in a general bicycle brake lever adjustment method, it is difficult to hold the brake lever with sufficient force at the braking position. On the other hand, when a feeling of operation such that the operation lever is fully grasped with a light load is given, the brake lever can be grasped with a sufficient force at the braking position, and reliable braking can be performed.

また、操作機構1Aを適用したブレーキレバー10Aは、操作レバー2Aの操作部20Aがハンドル部5Aに沿った向きをロック位置とすることで、操作レバーAがハンドル部5Aから大きく突出しないような形態として、誤作動を防止することができる。また、ロック時及びロック解除時の操作レバー2Aの回転量は多くなるが、操作荷重が軽減されているので、握力や腕の力の弱い人でも、容易かつ確実な操作が可能である。   Further, the brake lever 10A to which the operation mechanism 1A is applied has a configuration in which the operation lever A does not protrude greatly from the handle portion 5A because the operation portion 20A of the operation lever 2A has a direction along the handle portion 5A as the lock position. As a result, malfunction can be prevented. In addition, the amount of rotation of the operation lever 2A at the time of locking and unlocking increases, but since the operation load is reduced, even a person with weak grip strength or arm strength can easily and surely operate.

なお、操作力軽減手段を備えたリクライニングレバー10Bは、ブレーキレバー10Aと同様に、軽い荷重で油圧シリンダ63を作動させることができる。特に、椅子部7をリクライニングさせる操作は、第1のハンドル部62Aを把持する手でリクライニングレバー10Bを握りながら、第1のハンドル部62Aを引いて背面支持部61を倒すという動作が必要で、また、油圧シリンダ63は、図示しない弁を開閉させて作動させるため、操作レバーのストロークが長くなっても、軽い荷重で握れたほうが、確実かつ容易に操作を行うことができる。   In addition, the reclining lever 10B provided with the operation force reducing means can operate the hydraulic cylinder 63 with a light load, like the brake lever 10A. In particular, the operation of reclining the chair portion 7 requires an operation of pulling the first handle portion 62A and tilting the back support portion 61 while grasping the reclining lever 10B with a hand holding the first handle portion 62A. In addition, since the hydraulic cylinder 63 is operated by opening and closing a valve (not shown), even if the stroke of the operation lever becomes longer, the hydraulic cylinder 63 can be reliably and easily operated when grasped with a light load.

本発明の操作機構を備えた生活支援用具は、手動の車椅子に限るものではなく、他の福祉用具、例えば、電動の車椅子、電動三輪,四輪車、ブレーキを備えた歩行車、介護用のベッドの等で可倒機構を作動させる操作機構に適用しても良い。また、福祉用具以外の生活支援用具として、高齢者用の補助輪付きの自転車、幼児同乗の3人乗り自転車、ベビーカー等の車両であっても良い。   The life support tool provided with the operation mechanism of the present invention is not limited to a manual wheelchair, but other welfare tools such as an electric wheelchair, an electric three-wheeler, a four-wheeled vehicle, a walking car equipped with a brake, and a nursing care tool. The present invention may be applied to an operation mechanism that operates a retractable mechanism with a bed or the like. Moreover, as a life support tool other than the welfare tool, a bicycle such as a bicycle with an auxiliary wheel for elderly people, a three-seater bicycle with an infant, and a stroller may be used.

本発明は、人が操作する機構を備えた福祉用具等の生活支援用具に適用される。   The present invention is applied to a life support tool such as a welfare tool having a mechanism operated by a person.

1A,1B・・・操作機構、2A,2B・・・操作レバー、3A,3B・・・リンク部材、4A,4B・・・ブラケット、5A・・・ハンドル部 1A, 1B ... operating mechanism, 2A, 2B ... operating lever, 3A, 3B ... link member, 4A, 4B ... bracket, 5A ... handle part

Claims (7)

操作者の力を受けて移動する操作部材と、
前記操作部材の動作を、操作対象物を作動させる駆動力伝達手段に伝達するリンク部材と、
前記操作部材の操作に要する操作荷重を低減させる操作力軽減手段と、
前記操作力軽減手段で操作荷重が軽減される前記操作部材の操作で前記操作対象物を所定の状態で保持する保持手段とを備えた
ことを特徴とする操作機構。
An operating member that moves under the force of the operator;
A link member for transmitting the operation of the operation member to a driving force transmission means for operating the operation target;
Operating force reducing means for reducing an operating load required for operating the operating member;
An operation mechanism comprising: holding means for holding the operation target object in a predetermined state by operation of the operation member whose operation load is reduced by the operation force reduction means.
前記操作力軽減手段は、前記操作部材及び前記リンク部材における力の作用点及び力点と支点間距離の比で、前記操作部材の操作に要する操作荷重を低減させ、
前記保持手段は、前記操作部材と前記リンク部材が接する力の作用点及び力点に、前記操作対象物を所定の状態で保持する操作で移動した前記操作部材を保持する保持面を備えた
ことを特徴とする請求項1記載の操作機構。
The operation force reducing means reduces the operation load required for operation of the operation member by the force application point and the ratio between the force point and the fulcrum distance in the operation member and the link member,
The holding means includes a holding surface that holds the operation member moved by an operation of holding the operation object in a predetermined state at an action point and a force point of a force at which the operation member and the link member are in contact with each other. The operation mechanism according to claim 1, wherein
前記操作対象物を所定の状態とする前記操作部材の第1の方向への移動の支点となる第1の支軸と、
前記操作対象物を所定の状態で保持する前記操作部材の第2の方向への移動の支点となる第2の支軸と、
前記操作部材が操作される方向に応じて、前記操作部材の動作の支点を前記第1の支軸と前記第2の支軸で切り換える支軸切換手段とを備え、
前記第1の支軸と前記操作部材の端部との間に前記第2の支軸が配置され、
前記保持手段は、前記第2の支軸を支点に第2の方向に移動した前記操作部材を前記保持面で保持する
ことを特徴とする請求項2記載の操作機構。
A first support shaft serving as a fulcrum for movement of the operation member in a first direction to bring the operation object into a predetermined state;
A second support shaft serving as a fulcrum of movement in the second direction of the operation member for holding the operation object in a predetermined state;
A spindle switching means for switching a fulcrum of operation of the operation member between the first support shaft and the second support shaft according to a direction in which the operation member is operated;
The second support shaft is disposed between the first support shaft and an end of the operation member;
The operation mechanism according to claim 2, wherein the holding unit holds the operation member that has moved in the second direction with the second support shaft as a fulcrum, on the holding surface.
前記操作部材は、前記第1の支軸に軸支される支軸切換部と、前記支軸切換部に前記第2の支軸で軸支される操作部を備えた
ことを特徴とする請求項3記載の操作機構。
The operation member includes a support shaft switching portion that is pivotally supported by the first support shaft, and an operation portion that is pivotally supported by the second support shaft at the support shaft switching portion. Item 4. The operation mechanism according to Item 3.
前記支軸切換手段は、前記第1の支軸を支持する第1の軸支持部と前記第2の支軸を支持する第2の軸支持部が、一方の支軸を支点とした他方の支軸の移動の軌跡に沿った長穴で形成される
ことを特徴とする請求項3記載の操作機構。
The supporting shaft switching means includes a first shaft supporting portion that supports the first supporting shaft and a second shaft supporting portion that supports the second supporting shaft. The operation mechanism according to claim 3, wherein the operation mechanism is formed by an elongated hole along a trajectory of movement of the support shaft.
前記保持手段は、前記操作対象物を所定の状態で保持する前記操作部材を、中間位置で保持する中間保持面を備えた
ことを特徴とする請求項1〜請求項5のいずれか1項に記載の操作機構。
The said holding | maintenance means was equipped with the intermediate holding surface which hold | maintains the said operation member which hold | maintains the said operation target object in a predetermined | prescribed state in an intermediate position. The operating mechanism described.
請求項1〜請求項6のいずれか1項に記載の操作機構と、
前記操作機構に操作される操作対象物を備えた
ことを特徴とする生活支援用具。
The operation mechanism according to any one of claims 1 to 6,
A life support tool comprising an operation object operated by the operation mechanism.
JP2010032547A 2009-12-28 2010-02-17 Operation mechanism and life support tool Expired - Fee Related JP5471566B2 (en)

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EP10015673A EP2340988A3 (en) 2009-12-28 2010-12-15 Operating mechanism and assistive equipment
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS64114U (en) * 1987-06-19 1989-01-05
JP2576823B2 (en) * 1992-03-24 1997-01-29 エルゴテック、イ、スモーランド、アクチボラグ Actuating devices such as brakes
JPH09267731A (en) * 1996-03-29 1997-10-14 Harakin Kk Wire operating device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS64114U (en) * 1987-06-19 1989-01-05
JP2576823B2 (en) * 1992-03-24 1997-01-29 エルゴテック、イ、スモーランド、アクチボラグ Actuating devices such as brakes
JPH09267731A (en) * 1996-03-29 1997-10-14 Harakin Kk Wire operating device

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