JP3809584B2 - Walking assistance vehicle - Google Patents

Walking assistance vehicle Download PDF

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JP3809584B2
JP3809584B2 JP2003354261A JP2003354261A JP3809584B2 JP 3809584 B2 JP3809584 B2 JP 3809584B2 JP 2003354261 A JP2003354261 A JP 2003354261A JP 2003354261 A JP2003354261 A JP 2003354261A JP 3809584 B2 JP3809584 B2 JP 3809584B2
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久子 三浦
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大阪ベビー＆シルバー用品協同組合
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この発明は、高齢者や病弱者の歩行時に身体を支えるとともに、任意の場所に移動可能な椅子として使用することができる歩行補助車に関する。   The present invention relates to a walking assistance vehicle that can be used as a chair that supports a body when an elderly person or a sick person walks and can move to an arbitrary place.

従来より、下肢の不自由な高齢者や病弱者の歩行時に身体を支える歩行補助車が使用されている。歩行補助車は、本体上部にハンドルを備えるとともに本体下部の４隅に車輪を備え、本体の背面側に立った使用者が前傾姿勢でハンドルを把持し、本体を前面側に押すようにして使用される。このような歩行補助者として、使用者の疲労時等において任意の場所で着座姿勢をとることができるように座席を備えたものがある。また、従来の歩行補助車として、運搬時や収納時の作業性を考慮して本体を折り畳めるように構成したものもある（例えば、特許文献１及び２参照。）。   2. Description of the Related Art Conventionally, walking assist vehicles that support the body when walking with elderly people who have difficulty in lower limbs or those with illness have been used. The walking assist vehicle has a handle at the top of the main body and wheels at the four corners at the bottom of the main body. A user standing on the back side of the main body grips the handle in a forward leaning posture and pushes the main body to the front side. used. As such walking assistants, there are those equipped with a seat so that the user can take a sitting posture at any place when the user is fatigued. Further, as a conventional walking assistance vehicle, there is one configured to fold the main body in consideration of workability during transportation and storage (see, for example, Patent Documents 1 and 2).

上記特許文献１及び２に開示された構成では、板状の座席を歩行補助車本体の左右方向の軸廻りに回動自在に備え、本体は前後方向に折り畳まれる。特に、特許文献２に開示された構成では、本体の背面側に位置する使用者が本体の前面側に回り込むことなく座ることができるように、本体の背面側に露出するように座席を支持している。これらの構成において、座席を板状に構成しているのは、使用者の着座姿勢を堅牢に支持するためである。また、本体を前後方向に折り畳むようにしているのは、板状の座席を左右方向の軸廻りに回動させるように構成した場合に、本体を幅方向に折り畳むことが困難だからである。
特開２００１−０４６４５２号公報 特開２００１−３０９９５６号公報 In the configurations disclosed in Patent Documents 1 and 2, a plate-like seat is provided so as to be rotatable about a left-right axis of the walking auxiliary vehicle main body, and the main body is folded in the front-rear direction. In particular, in the configuration disclosed in Patent Document 2, the seat is supported so as to be exposed on the back side of the main body so that a user located on the back side of the main body can sit without going around the front side of the main body. ing. In these configurations, the seat is configured in a plate shape in order to firmly support the seating posture of the user. The reason why the main body is folded in the front-rear direction is that it is difficult to fold the main body in the width direction when the plate-like seat is configured to rotate around the left-right axis.
JP 2001-046452 A JP 2001-309956 A

しかしながら、上記特許文献１及び２に開示されているように、板状の座席を本体の左右方向の軸廻りに回動自在に備え、本体を前後方向に折り畳むようにした従来の歩行補助車では、前後の車輪が互いに干渉しない範囲にしか折り畳むことができず、また、ハンドルが前後方向に折り曲げられているため、平面方向の投影面積が十分に小さくなるように折り畳むことが困難で、折り畳んだ状態でも比較的大きな収納スペースを必要とする問題がある。   However, as disclosed in the above Patent Documents 1 and 2, in the conventional walking auxiliary vehicle provided with a plate-like seat so as to be rotatable around a horizontal axis of the main body, and the main body is folded in the front-rear direction. The front and rear wheels can only be folded within the range where they do not interfere with each other, and the handle is folded back and forth, making it difficult to fold so that the projection area in the plane direction is sufficiently small. Even in the state, there is a problem that requires a relatively large storage space.

この発明の目的は、板状の座席を左右方向の軸廻りに回動自在に備えた場合でも、本体を左右方向に折り畳むことができるようにし、平面方向の投影面積が十分に小さくなるように折り畳むことができ、安定した着座姿勢を確保しつつ十分に小さなスペースに収納することができる歩行補助車を提供することにある。   The object of the present invention is to make it possible to fold the main body in the left-right direction even when a plate-like seat is provided so as to be rotatable about a left-right axis, so that the projected area in the plane direction is sufficiently small. An object of the present invention is to provide a walking assistance vehicle that can be folded and stored in a sufficiently small space while ensuring a stable seating posture.

この発明は、上記の課題を解決するために、
（１）それぞれの前側下端部及び後側下端部に車輪を軸支した左右の支持体と、
左右の支持体のそれぞれにおいて一端部を前後方向の軸廻りに回転自在に支持され、水平位置において長手方向が左右方向に一致する左右の連結杆と、
左右の連結杆のそれぞれの開放端である他端部を前後方向の軸廻りにおける左右の連結杆の水平位置から下方への移動を規制して連結する第１の連結部材と、
それぞれの一端部において左右の連結杆のそれぞれの中間部に左右方向の軸廻りに回転自在に支持された左右の座席杆と、
左右の座席杆の他端部を前後方向の軸廻りにおける左右の連結杆の回転に伴う左右の座席杆の水平位置から下方への移動を規制して連結する第２の連結部材と、
左右方向の軸廻りにおける左右の座席杆の水平位置から下方への移動を規制する規制部材と、
左右の座席杆を左右方向の軸廻りにおける水平位置から上方に回動して略垂直となる位置で選択的に固定する固定部材と、
左右の座席杆の上面側で一方の座席杆に固定された板状の座席と、
を備え、水平位置における左右の座席杆を左右の連結杆の背面側に配置したことを特徴とする。 In order to solve the above problems, the present invention
(1) Left and right supports that pivotally support the wheels on the front lower end and the rear lower end,
In each of the left and right support bodies, one end is rotatably supported around the axis in the front-rear direction, and the left and right connecting rods whose longitudinal direction matches the left-right direction at the horizontal position,
A first connecting member for connecting the other end, which is the open end of each of the left and right connecting rods, by restricting the downward movement of the left and right connecting rods from the horizontal position around the longitudinal axis;
Left and right seat rods rotatably supported around the left and right axis at the respective intermediate portions of the left and right connecting rods at respective one end portions;
A second connecting member that connects the other end portions of the left and right seat rods by restricting the downward movement of the left and right seat rods from the horizontal position associated with the rotation of the left and right connecting rods about the longitudinal axis;
A regulating member that regulates the downward movement of the left and right seat rods from the horizontal position around the left and right axis;
A fixing member for selectively fixing the left and right seat rods at a position that is substantially vertical by rotating upward from a horizontal position around the axis in the left-right direction;
A plate-like seat fixed to one seat rod on the upper surface side of the left and right seat rods;
And the left and right seat rods in a horizontal position are arranged on the back side of the left and right connecting rods.

この構成においては、左右の連結杆のそれぞれの一端部が、前側下端部及び後側下端部に車輪を軸支した左右の支持体のそれぞれに、前後方向の軸廻りに回転自在にして支持される。左右の連結杆のそれぞれの他端部は、第１の連結部材によって左右の連結杆が前後方向の軸廻りにおける水平位置から下方に移動できない状態で連結される。左右の連結杆の中間部には、左右の座席杆の一端部が左右方向の軸廻りに回転自在に支持される。左右の座席杆は、左右の連結杆に伴って前後方向の軸廻りに回転する際に水平位置から下方に移動できない状態で第２の連結部材によってそれぞれの他端部を連結される。また、左右の座席杆は、規制部材によって左右方向の軸廻りにおける水平位置から下方に移動できない状態にされている。   In this configuration, one end of each of the left and right connecting rods is supported by the left and right support bodies that pivotally support the wheels at the front lower end and the rear lower end, respectively, so as to be rotatable about the front and rear axis. The The other end portions of the left and right connecting rods are connected by the first connecting member in a state where the left and right connecting rods cannot move downward from the horizontal position around the axis in the front-rear direction. One end portions of the left and right seat rods are supported on the middle portion of the left and right connecting rods so as to be rotatable about a left and right axis. The left and right seat rods are connected to the other ends by the second connecting members in a state where they cannot move downward from the horizontal position when rotating about the front-rear direction shaft along with the left and right connecting rods. Further, the left and right seat rods are in a state in which they cannot be moved downward from the horizontal position around the axis in the left-right direction by the restriction member.

このため、各連結杆及び各座席杆は、前後方向の軸廻りについて水平位置から上方にのみ回転し、水平位置から下方へは回転しない。また、各座席杆は、左右方向の軸廻りについて水平位置から上方にのみ回転し、水平位置から下方へは回転しない。さらに、各連結杆は、左右方向の軸廻りについて水平位置から上方に回転して略垂直となる位置で固定部材によって選択的に固定される。左右の座席杆は水平位置において左右の連結杆の背面側に位置しており、左右の座席杆は略垂直となる位置において左右の連結杆の上面側に位置する。   For this reason, each connecting rod and each seat rod rotate only upward from the horizontal position around the axis in the front-rear direction, and do not rotate downward from the horizontal position. Further, each seat rod rotates only from the horizontal position upward about the left and right axis, and does not rotate downward from the horizontal position. Further, each connecting rod is selectively fixed by a fixing member at a position that rotates upward from a horizontal position about the left and right axis and becomes substantially vertical. The left and right seat rods are positioned on the back side of the left and right connecting rods in the horizontal position, and the left and right seat rods are positioned on the upper surface side of the left and right connecting rods in a position that is substantially vertical.

したがって、左右の座席杆は、座席とともに左右方向の軸廻りについて水平位置と水平位置から上方に回転して略垂直となる位置との間で回転し、座席は水平状態又は略垂直状態に選択的に保持される。左右の座席杆が略垂直となる位置にあるときは、左右の連結杆の上面側に左右の座席杆が位置しているため、左右の連結杆は前後方向の軸廻りにおける水平位置から上方に回転することができない。一方、左右の座席杆が水平位置にあるときは、左右の連結杆の背面側に左右の座席杆が位置しているため、左右の連結杆は前後方向の軸廻りにおける水平位置から上方に回転することができる。左右の連結杆を前後方向の軸廻りについて水平位置から上方に回転させると、左右の連結杆の端部を支持した左右の支持体が互いに接近する。このとき、各座席杆は各連結杆に伴って前後方向の軸廻りついて上方に回転するが、座席は他方の座席杆の上面から離れて一方の座席杆とともに回転する。   Therefore, the left and right seat rods rotate together with the seat in the horizontal direction and between the horizontal position and the position that is rotated upward from the horizontal position and becomes substantially vertical, and the seat is selectively set to the horizontal state or the substantially vertical state. Retained. When the left and right seat rods are in a substantially vertical position, the left and right seat rods are positioned on the upper surface side of the left and right connecting rods, so the left and right connecting rods are upward from the horizontal position around the longitudinal axis. Cannot rotate. On the other hand, when the left and right seat rods are in the horizontal position, the left and right seat rods are positioned on the rear side of the left and right connecting rods, so the left and right connecting rods rotate upward from the horizontal position around the longitudinal axis. can do. When the left and right connecting rods are rotated upward from the horizontal position about the axis in the front-rear direction, the left and right supports that support the ends of the left and right connecting rods approach each other. At this time, each seat rod rotates about the axis in the front-rear direction along with each connecting rod, but the seat rotates with one seat rod away from the upper surface of the other seat rod.

（２）それぞれの一端部が前記左右の支持体のそれぞれの前面側において略鉛直方向の軸廻りに回転自在に支持された少なくとも左右各１つの補強連結杆と、
左右の補強連結杆のそれぞれの他端部を前面方向への移動を規制して連結するとともに、左右の座席杆に伴って略垂直位置に回転した座席の下端部が背面側に当接する補強連結部材と、
をさらに設けたこと特徴とする。 (2) At least one left and right reinforcing connecting rods, each of which is rotatably supported about a substantially vertical axis on the front side of each of the left and right supports,
Reinforced connection where the other ends of the left and right reinforcing connecting rods are connected by restricting movement in the front direction, and the lower end of the seat rotated to a substantially vertical position with the left and right seat rods contacts the back side Members,
Is further provided.

この構成においては、左右の補強連結杆が支持体の前面側において略鉛直方向の軸廻りに回転自在に支持され、各補強連結杆は背面方向にのみ回転可能にされている。したがって、左右の連結杆を前後方向の軸廻りについて上方に回転させると、左右の補強連結杆は互いに連結された端部が背面方向に移動するように回転する。しかし、左右の座席杆が略垂直となる位置にある状態では、補強連結部材の背面に座席の下端部が当接し、各補強連結杆の背面方向への回転も規制される。   In this configuration, the left and right reinforcing connecting rods are supported so as to be rotatable about a substantially vertical axis on the front side of the support, and each reinforcing connecting rod is rotatable only in the back direction. Therefore, when the left and right connecting rods are rotated upward about the axis in the front-rear direction, the left and right reinforcing connecting rods rotate so that the ends connected to each other move in the back direction. However, in a state where the left and right seat rods are in a substantially vertical position, the lower end portion of the seat comes into contact with the back surface of the reinforcing connecting member, and the rotation of each reinforcing connecting rod in the back direction is also restricted.

この発明の歩行補助車によれば、左右の座席杆を左右方向の軸廻りについて水平位置と水平位置から上方に回転した略垂直となる位置との間で回転させることによって座席を水平状態又は傾斜した状態に選択的に保持することができるとともに、左右の座席杆が水平位置にある状態から左右の連結杆を前後方向の軸廻りについて左右の連結杆の水平位置から上方に回転させることによって座席を他方の座席杆の上面から離れて一方の座席杆とともに回転させつつ、左右の支持体を互いに接近させることができる。これによって、板状の座席を左右方向の軸廻りに回動自在に備えた場合でも、本体を平面方向の投影面積が十分に小さくなるように左右方向に折り畳むことができ、十分に小さなスペースに収納することができる。   According to the walking assistance vehicle of the present invention, the left and right seat rods are rotated between the horizontal position and the substantially vertical position rotated upward from the horizontal position with respect to the left and right axis, so that the seat is in a horizontal state or inclined. The seat can be selectively held in a state where the left and right seating rods are in a horizontal position and the left and right connecting rods are rotated upward from the horizontal position of the left and right connecting rods about the axis in the front-rear direction. The left and right supports can be brought closer to each other while rotating with the one seat rod away from the upper surface of the other seat rod. As a result, even when a plate-like seat is provided so as to be rotatable about a left-right axis, the main body can be folded in the left-right direction so that the projection area in the plane direction is sufficiently small, so that a sufficiently small space can be obtained. Can be stored.

一方、左右の座席杆が略垂直となる位置にある状態では左右の連結杆の上面側に左右の座席杆が位置することから、左右の連結杆の前後方向の軸廻りについて上方に回転させることができず、座席を略垂直となる位置にして歩行している間には左右の支持体が互いに近接することはなく、歩行時における使用者の安全性が確保される。   On the other hand, when the left and right seat rods are in a substantially vertical position, the left and right seat rods are positioned on the upper surface side of the left and right connecting rods. However, the left and right supports do not come close to each other while walking with the seat in a substantially vertical position, and the safety of the user during walking is ensured.

図１（Ａ）〜（Ｃ）は、この発明の実施形態に係る歩行補助車の正面図、左側面図及び背面図である。この発明の歩行補助車１０は、左右の側面を構成する支持体１，１のそれぞれの前側下端部及び後側下端部に前輪２，２及び後輪３，３を軸支し、左右の支持体１，１の間に左右１対の座席杆４ａ，４ｂ、左右１対の連結杆８ａ，８ｂ（図示せず。）、左右１対の補強連結杆５，５、及び、帯状の背当て７を配置し、さらに、左右の座席杆４ａ，４ｂの上面に板状の座席６を載置して構成されている。   1A to 1C are a front view, a left side view, and a rear view of a walking assistance vehicle according to an embodiment of the present invention. The walking auxiliary vehicle 10 according to the present invention supports the left and right supports by supporting the front wheels 2 and 2 and the rear wheels 3 and 3 at the front lower end and the rear lower end of the supports 1 and 1 constituting the left and right side surfaces, respectively. A pair of left and right seat rods 4a, 4b, a pair of left and right connecting rods 8a, 8b (not shown), a pair of left and right reinforcing connecting rods 5, 5, and a belt-like backrest 7 and further, a plate-like seat 6 is placed on the upper surfaces of the left and right seat rods 4a and 4b.

支持体１は、一例として、金属製円筒形状のパイプ１ａ〜１ｃを組み合わせて構成されている。直線状のパイプ１ａは、長手方向を垂直方向から後傾させた上下方向にして配置され、下端部において軸支部材２１を介して前輪２を軸支するとともに、上端部において固定ネジ１２を介してハンドル１１を伸縮自在に備えている。略Ｌ字状に折り曲げられたパイプ１ｂは、一端部が接合部材１３を介してパイプ１ａの中間部に接合され、他端部において軸支部材３１を介して後輪３を軸支する。パイプ１ｂは、パイプ１ａとの固定部から水平に背面方向に延出している。直線状のパイプ１ｃの両端部のそれぞれは、接合部材１４及び１５を介してパイプ１ａの下端部近傍及びパイプ１ｂの下端部近傍に接合されている。   As an example, the support 1 is configured by combining metal cylindrical pipes 1a to 1c. The straight pipe 1a is arranged with its longitudinal direction tilted up and down from the vertical direction, and supports the front wheel 2 via the shaft support member 21 at the lower end portion, and via the fixing screw 12 at the upper end portion. The handle 11 is provided to be telescopic. One end of the pipe 1b bent in a substantially L shape is joined to the intermediate portion of the pipe 1a via the joining member 13, and the rear wheel 3 is pivotally supported via the shaft support member 31 at the other end. The pipe 1b extends horizontally from the fixed portion with the pipe 1a in the back direction. Both ends of the straight pipe 1c are joined to the vicinity of the lower end of the pipe 1a and the vicinity of the lower end of the pipe 1b via joining members 14 and 15, respectively.

背当て７は、一例として布を素材として形成されており、左右の支持体１におけるパイプ１ａ，１ａの上端部近傍に巻着されている。   The backrest 7 is formed of cloth as an example, and is wound around the vicinity of the upper ends of the pipes 1a and 1a in the left and right supports 1.

補強連結杆５は、一例として、金属製円筒形状のパイプ５ａ〜５ｄを組み合わせて構成されている。上下２本の水平方向のパイプ５ａ，５ｂは、一端部５ａａ，５ｂａにおいて軸支部材５１，５２を介して支持体１のパイプ１ａにパイプ１ａの軸方向に平行な軸廻りに回転自在に支持されている。２本の垂直方向のパイプ５ｃ，５ｄのそれぞれの両端は、パイプ５ａ，５ｂのそれぞれの中間部に溶接によって接合されている。   As an example, the reinforcing connecting rod 5 is configured by combining metal cylindrical pipes 5a to 5d. The two upper and lower horizontal pipes 5a and 5b are rotatably supported around the axis parallel to the axial direction of the pipe 1a on the pipe 1a of the support 1 via the shaft support members 51 and 52 at one end portions 5aa and 5ba. Has been. Both ends of each of the two vertical pipes 5c and 5d are joined to respective intermediate portions of the pipes 5a and 5b by welding.

したがって、パイプ５ｃ，５ｄは、補強連結杆５としてパイプ５ａ，５ｂと一体的に、支持体１に対してパイプ１ａの長手方向に平行な上下方向の軸廻りに回転する。左右の補強連結杆５，５のそれぞれのパイプ５ａ，５ｂの各他端部５ａｂ，５ｂｂは、補強連結部材５３，５４を介して連結されている。補強連結部材５３，５４は、パイプ５ａ，５ｂの各他端部５ａｂ，５ｂｂが支持体１のパイプ１ａよりも前面側に移動することを規制する。このため、補強連結杆５，５は、支持体１のパイプ１ａの長手方向に平行な軸廻りについて、左右の補強連結杆５，５が平行になる位置から背面側へのみ回転する。   Accordingly, the pipes 5c and 5d rotate integrally with the pipes 5a and 5b as the reinforcing connecting rod 5 around the vertical axis parallel to the longitudinal direction of the pipe 1a with respect to the support 1. The other end portions 5ab and 5bb of the pipes 5a and 5b of the left and right reinforcing connecting rods 5 and 5 are connected via reinforcing connecting members 53 and 54, respectively. The reinforcing connecting members 53 and 54 restrict the other end portions 5ab and 5bb of the pipes 5a and 5b from moving to the front side of the pipe 1a of the support 1. For this reason, the reinforcing connecting rods 5 and 5 rotate only from the position where the left and right reinforcing connecting rods 5 and 5 are parallel to the back side about the axis parallel to the longitudinal direction of the pipe 1a of the support 1.

なお、補強連結杆５，５は、必須の構成ではなく、支持体１，１，連結杆８ａ，８ｂ及び座席杆４ａ，４ｂによって十分な強度が確保されることを条件に省略することもできる。   The reinforcing connecting rods 5 and 5 are not essential components, and may be omitted on the condition that sufficient strength is secured by the support bodies 1 and 1 and the connecting rods 8a and 8b and the seat rods 4a and 4b. .

図２は、上記歩行補助車の連結杆及び座席杆の構成を示す底面図である。左右一対の座席杆４ａ，４ｂのそれぞれは、一例として、金属製円筒形状のパイプを底面から見て略コの字状に折り曲げて構成されている。左右一対の連結杆８ａ，８ｂのそれぞれは、一例として、金属製円筒形状のパイプによって構成されている。   FIG. 2 is a bottom view showing the configuration of the connecting rod and the seat rod of the walking assistance vehicle. As an example, each of the pair of left and right seat rods 4a and 4b is configured by bending a metal cylindrical pipe into a substantially U shape when viewed from the bottom. Each of the pair of left and right connecting rods 8a and 8b is constituted by a metal cylindrical pipe as an example.

左側の連結杆８ａは、一端部８ａａを支持部材４１を介して支持体１において前後方向の軸廻りに回転自在に支持されている。左側の座席杆４ａは、一端部４ａａの近傍で接合部材４２を介して左側の連結杆８ａの中間部において左右方向の軸廻りに回転自在にして接合されている。右側の連結杆８ｂは、一端部８ｂａを支持部材４１を介して支持体１において前後方向の軸廻りに回転自在に支持されている。右側の座席杆４ｂは、一端部４ｂａの近傍で接合部材４２を介して右側の連結杆８ｂの中間部において左右方向の軸廻りに回転自在にして接合されている。左右の座席杆４ａ，４ｂの上方には、板状の座席６が配置される。座席６は固定板６１を介して左側の座席杆４ａにのみ固定されている。   The left connecting rod 8a is supported at its one end 8aa via a support member 41 so as to be rotatable about a front-rear axis. The left seat rod 4a is joined so as to be rotatable around a left-right axis at an intermediate portion of the left connecting rod 8a via a joining member 42 in the vicinity of the one end portion 4aa. The right connecting rod 8b is supported at one end portion 8ba via the support member 41 so as to be rotatable around the axis in the front-rear direction. The right seat rod 4b is joined so as to be rotatable around a left-right axis at an intermediate portion of the right connecting rod 8b via a joining member 42 in the vicinity of the one end portion 4ba. A plate-like seat 6 is disposed above the left and right seat rods 4a and 4b. The seat 6 is fixed only to the left seat rod 4a via a fixing plate 61.

左右の連結杆８ａ，８ｂのそれぞれの他端部８ａｂ，８ｂｂは、第１の連結部材４３を介して前後方向の軸廻りに回転自在、かつ下方向への回転を規制して連結されている。左右の座席杆４ａ，４ｂのそれぞれの他端部４ａｂ，４ｂｂは、第２の連結部材４４を介して前後方向の軸廻りに回転自在、かつ下方向への回転を規制して連結されている。   The other end portions 8ab and 8bb of the left and right connecting rods 8a and 8b are connected to each other via a first connecting member 43 so as to be rotatable around a front-rear axis and to restrict downward rotation. . The other end portions 4ab and 4bb of the left and right seat rods 4a and 4b are connected to each other via a second connecting member 44 so as to be rotatable about a front-rear axis and restricted to rotate downward. .

左右の座席杆４ａ，４ｂは、水平位置において左右の連結杆８ａ，８ｂの背面側に位置している。このため、左右の座席杆４ａ，４ｂが水平位置にある場合には、左右の連結杆８ａ，８ｂは左右の座席杆４ａ，４ｂとともに支持体１のパイプ１ｂを中心にして前後方向の軸廻りに上方に向って回転することができる。このとき、座席６は右側の座席杆４ｂの上面から離れ、左側の座席杆４ａとともに上方に向って回転する。連結杆８ａ，８ｂの他端部８ａｂ，８ｂｂ、及び、座席杆４ａ，４ｂの他端部４ａｂ，４ｂｂが上方に移動するにしたがって、左右の支持体１，１のパイプ１ｂ，１ｂの間隔が減少し、左右の支持体１，１は互いに接近する。   The left and right seat rods 4a and 4b are located on the back side of the left and right connecting rods 8a and 8b in the horizontal position. For this reason, when the left and right seat rods 4a and 4b are in the horizontal position, the left and right connecting rods 8a and 8b rotate around the axis in the front-rear direction around the pipe 1b of the support 1 together with the left and right seat rods 4a and 4b. Can be rotated upwards. At this time, the seat 6 moves away from the upper surface of the right seat rod 4b and rotates upward together with the left seat rod 4a. As the other ends 8ab, 8bb of the connecting rods 8a, 8b and the other ends 4ab, 4bb of the seat rods 4a, 4b move upward, the distance between the pipes 1b, 1b of the left and right supports 1, 1 is increased. The left and right supports 1, 1 approach each other.

左右の連結杆８ａ，８ｂが水平位置にある場合には、左右の座席杆４ａ，４ｂは左右の連結杆８ａ，８ｂを中心にして一体的に左右方向の軸廻りに上方に向って回転することができる。左右の座席杆４ａ，４ｂが略垂直となる位置に達すると、左右の座席杆４ａ，４ｂは左右の連結杆８ａ，８ｂの上面側に位置する。これによって、左右の連結杆８ａ，８ｂは、支持体１のパイプ１ｂを中心に前後方向の軸廻りに上方へ回転することができなくなる。即ち、左右の連結杆８ａ，８ｂのそれぞれは、左右の座席杆４ａ，４ｂが水平位置にある場合にのみ、左右の座席杆４ａ，４ｂのそれぞれとともに前後方向の軸廻りに上方へ回転することができる。   When the left and right connecting rods 8a and 8b are in the horizontal position, the left and right seat rods 4a and 4b are integrally rotated around the left and right axis around the left and right connecting rods 8a and 8b. be able to. When the left and right seat rods 4a and 4b reach a position that is substantially vertical, the left and right seat rods 4a and 4b are positioned on the upper surface side of the left and right connecting rods 8a and 8b. As a result, the left and right connecting rods 8a and 8b cannot rotate upward around the axis in the front-rear direction around the pipe 1b of the support 1. That is, the left and right connecting rods 8a and 8b rotate upwardly around the front and rear axis together with the left and right seat rods 4a and 4b only when the left and right seat rods 4a and 4b are in the horizontal position. Can do.

支持部材４１，４１は、支持体１のパイプ１ｂに外嵌して回転自在に取り付けられているとともに、パイプ１ｂに直交する方向に嵌入した連結杆８ａ，８ｂの一端部８ａａ，８ｂａを軸支する。これによって、連結杆８ａ，８ｂは、支持部材４１，４１とともに支持体１，１のパイプ１ｂ，１ｂに対して前後方向の軸廻りに回転する。座席杆４ａ，４ｂにおいてパイプ１ｂ，１ｂに平行な中央部には、規制部材４５，４５が固定されている。規制部材４５，４５は、座席杆４ａ，４ｂの外側に延出しており、パイプ１ｂ，１ｂの外周面に上方から嵌着する。規制部材４５，４５がパイプ１ｂ，１ｂの外周面に上方から嵌着することにより、座席杆４ａ，４ｂの左右方向の軸廻りの回転範囲が水平位置よりも上方に限定される。   The support members 41 and 41 are externally fitted to the pipe 1b of the support body 1 so as to be freely rotatable and support one end portions 8aa and 8ba of the connecting rods 8a and 8b fitted in a direction perpendicular to the pipe 1b. To do. As a result, the connecting rods 8a and 8b rotate around the axis in the front-rear direction with respect to the pipes 1b and 1b of the supports 1 and 1 together with the support members 41 and 41. In the seat rods 4a and 4b, restricting members 45 and 45 are fixed to the central portion parallel to the pipes 1b and 1b. The restricting members 45, 45 extend to the outside of the seat rods 4a, 4b and are fitted to the outer peripheral surfaces of the pipes 1b, 1b from above. By fitting the regulating members 45, 45 on the outer peripheral surfaces of the pipes 1b, 1b from above, the rotation range of the seat rods 4a, 4b around the axis in the left-right direction is limited above the horizontal position.

図３（Ａ）〜（Ｃ）は、上記歩行補助車における連結部材の一例を示す平面図、正面図及び底面図である。連結杆８ａ，８ｂの端部８ａｂ，８ｂｂを連結する第１の連結部材４３は、下方に開口した断面コの字型を呈しており、長手方向の両端部から連結杆８ａ，８ｂの端部８ａｂ，８ｂｂのそれぞれが嵌入する。端部８ａｂ，８ｂｂのそれぞれは、図３（Ａ），（Ｃ）に示すように前後方向に圧縮されており、図３（Ｂ）に示すように半円形状にされている。第１の連結部材４３は、内部において端部８ａｂ，８ｂｂのそれぞれにピン４３１を順に貫通させることにより、連結杆８ａ，８ｂを前後方向の軸廻りに軸支している。   3A to 3C are a plan view, a front view, and a bottom view showing an example of a connecting member in the walking auxiliary vehicle. The first connecting member 43 that connects the end portions 8ab and 8bb of the connecting rods 8a and 8b has a U-shaped cross section that opens downward, and the end portions of the connecting rods 8a and 8b from both ends in the longitudinal direction. Each of 8ab and 8bb is inserted. Each of the end portions 8ab and 8bb is compressed in the front-rear direction as shown in FIGS. 3A and 3C, and has a semicircular shape as shown in FIG. The first connecting member 43 supports the connecting rods 8a and 8b around the axis in the front-rear direction by passing the pins 431 through the end portions 8ab and 8bb in order.

第１の連結部材４３は、上面の内側面を連結杆８ａ，８ｂの端部８ａｂ，８ｂｂの上面に当接させており、連結杆８ａ，８ｂの端部８ａｂ，８ｂｂが第１の連結部材４３を下方に移動させるように回転することを規制する。第１の連結部材４３の長手方向における上面の中央部は部分円弧状に上方に突出しており、端部８ａｂ，８ｂｂが第１の連結部材４３を上方に移動させるように回転することを許容する。これによって、左右の連結杆８ａ，８ｂの前後方向の軸廻りにおける回転範囲が、水平位置よりも上方の範囲に限定されている。   The first connecting member 43 has the inner surface of the upper surface in contact with the upper surface of the end portions 8ab and 8bb of the connecting rods 8a and 8b, and the end portions 8ab and 8bb of the connecting rods 8a and 8b are the first connecting members. Rotation is controlled so as to move 43 downward. The central portion of the upper surface in the longitudinal direction of the first connecting member 43 protrudes upward in a partial arc shape, and the end portions 8ab and 8bb are allowed to rotate so as to move the first connecting member 43 upward. . As a result, the rotation range of the left and right connecting rods 8a, 8b around the axis in the front-rear direction is limited to a range above the horizontal position.

なお、左右の座席杆４ａ，４ｂの端部４ａｂ，４ｂｂを連結する第２の連結部材４４、及び、補強連結杆５においてパイプ５ａ，５ｂを連結する補強連結部材５３，５４も、第１の連結部材４３と同様に構成されている。   The second connecting member 44 that connects the ends 4ab and 4bb of the left and right seat rods 4a and 4b, and the reinforcing connecting members 53 and 54 that connect the pipes 5a and 5b in the reinforcing connecting rod 5 are also the first. The connection member 43 is configured similarly.

図４は、上記歩補助車の使用状態を説明する図である。使用者が歩行補助車１０を支えにして歩行する場合には、側面図である図４（Ａ）に示すように、図１に示した状態から座席６の背面側を上方に持ち上げ、座席６を座席杆４ａ，４ｂとともに支持体１，１に対して左右方向の軸廻りに水平位置から上方に向けて回転させる。これによって、左右の支持体１，１の間におけるハンドル１１，１１の背面側に使用者の身体を存在させるための空間が形成される。   FIG. 4 is a diagram for explaining a usage state of the above-described walking assistance vehicle. When the user walks with the walking assistance vehicle 10 as a support, as shown in FIG. 4A which is a side view, the rear side of the seat 6 is lifted upward from the state shown in FIG. Are rotated together with the seat rods 4a and 4b from the horizontal position upward with respect to the support 1 and 1 around the left and right axis. Thereby, a space for allowing the user's body to exist on the back side of the handles 11, 11 between the left and right supports 1, 1 is formed.

なお、少なくとも一方の支持体１のパイプ１ａには、左右方向の軸廻りの回転範囲において略垂直となる位置で座席杆４ａを選択的に固定する固定部材１６が取り付けられいる。固定部材１６を介して左右方向の軸廻りの回転範囲において略垂直となる位置で座席杆４ａを固定することにより、使用者が歩行補助車１０を支えにして歩行している間に座席６が座席杆４ａ，４ｂとともに下方に回転することがない。   Note that a fixing member 16 that selectively fixes the seat rod 4a at a position that is substantially vertical in a rotation range around the axis in the left-right direction is attached to the pipe 1a of at least one support body 1. By fixing the seat rod 4a through the fixing member 16 at a position that is substantially vertical in the rotation range around the axis in the left-right direction, the seat 6 is supported while the user is walking while supporting the walking auxiliary vehicle 10. It does not rotate downward together with the seat rods 4a and 4b.

また、上述の通り、座席杆４ａ，４ｂが略垂直となる位置に固定されている状態では、連結杆８う，８ｂは前後方向の軸廻りに回転することができず、左右の支持体１，１が左右方向に互いに接近することがない。このため、使用者が歩行補助車１０を支えにして歩行している間に左右の支持体１，１の左右方向の位置が変化することがなく、使用者の安全性が確保される。   Further, as described above, when the seat rods 4a and 4b are fixed at substantially vertical positions, the connecting rods 8 and 8b cannot rotate around the longitudinal axis, and the left and right supports 1 , 1 do not approach each other in the left-right direction. For this reason, the position of the left and right support bodies 1 and 1 in the left-right direction does not change while the user is walking with the walking assistance vehicle 10 supported, and the safety of the user is ensured.

固定部材１６は、例えば、図５に示すように、Ｌ字型の留め具１６３が上下に貫通する本体１６２を、取付金具１６１を介して支持体１のパイプ１ａに固定される。留め具１６３にはコイルバネ１６４が外嵌しており、留め具１６３はコイルバネ１６４の弾性力によって上方に付勢されている。取付金具１６１の上端部にはストッパ１６１ａが突出して形成されており、留め具１６３をコイルバネ１６４の弾性力に抗して下方に押圧しつつ回転させ、留め具１６３の水平部分をストッパ１６１ａの下方に当接させる。これによって、留め具１６３の垂直部分の下端部が下方に露出した状態が維持される。   For example, as shown in FIG. 5, the fixing member 16 fixes a main body 162 through which an L-shaped fastener 163 penetrates up and down to a pipe 1 a of the support 1 via an attachment fitting 161. A coil spring 164 is externally fitted to the fastener 163, and the fastener 163 is biased upward by the elastic force of the coil spring 164. A stopper 161a protrudes from the upper end portion of the mounting bracket 161, and the fastener 163 is rotated while being pressed downward against the elastic force of the coil spring 164. The horizontal portion of the fastener 163 is positioned below the stopper 161a. Abut. Thereby, the state in which the lower end portion of the vertical portion of the fastener 163 is exposed downward is maintained.

座席６とともに連結杆４ａ，４ｂを左右方向の軸廻りの回転範囲において略垂直となる位置まで回転させると、連結杆４ａのパイプ４ｂに固定されている規制部材４５が、固定部材１６の下方に接近する。この状態で固定部材１６の留め具１６３を図５（Ａ）に示す位置から図５（Ｂ）に示す位置に移動させることにより、留め具１６３の垂直部分の下端部が規制部材４５に当接し、連結杆４が水平位置に向けて下方に回転することを防止する。   When the connecting rods 4 a and 4 b are rotated together with the seat 6 to a position that is substantially vertical in the rotation range around the left and right axis, the restricting member 45 fixed to the pipe 4 b of the connecting rod 4 a is placed below the fixing member 16. approach. In this state, by moving the fastener 163 of the fixing member 16 from the position shown in FIG. 5A to the position shown in FIG. 5B, the lower end portion of the vertical portion of the fastener 163 comes into contact with the regulating member 45. The connecting rod 4 is prevented from rotating downward toward the horizontal position.

使用者が歩行補助者１０による歩行を止めて休憩する際には、図４（Ａ）に示した状態から、固定部材１６による固定を解除して連結杆４ａ，４ｂ及び座席６を左右方向の軸廻りに下方に向けて回転させ、図１に示したように連結杆４ａ，４ｂ及び座席６を水平位置にする。これによって、ハンドル１１，１１の背面側に座席６が水平に延出し、使用者は支持体１，１の前面側に回り込むことなく座席６に着席することができ、容易に着座姿勢をとることができる。   When the user stops walking with the walking assistant 10 and takes a break, from the state shown in FIG. 4A, the fixing by the fixing member 16 is released and the connecting rods 4a and 4b and the seat 6 are moved in the left-right direction. As shown in FIG. 1, the connecting rods 4a and 4b and the seat 6 are set in a horizontal position by rotating downward about the shaft. As a result, the seat 6 extends horizontally on the back side of the handles 11, 11, so that the user can sit on the seat 6 without going around the front side of the support 1, 1, and easily take a sitting posture. Can do.

歩行補助車１０を収納する際には、図１に示した状態から、座席６の左右方向における一端側（座席杆４に固定されていない側。ここでは右側。）を上方に持ち上げる。これによって、左右の座席杆４ａ，４ｂのうちで座席６を固定した一方の座席杆４（ここでは左側の連結杆４ａ）が一方の連結杆８ａとともに一方の支持体１に対して前後方向の軸廻りに上方に回転する。この一方の座席杆４ａ及び連結杆８ａの回転は連結部材４３，４４を介して他方の座席杆４ｂ及び連結杆８ｂに対称に伝達され、他方の座席杆４ｂ及び連結杆８ｂも他方の支持体１に対して前後方向の軸廻りに上方に回転する。   When the walking assistance vehicle 10 is stored, the one end side in the left-right direction of the seat 6 (the side not fixed to the seat rod 4; here, the right side) is lifted upward from the state shown in FIG. Thus, one of the left and right seat rods 4a and 4b, in which one of the seat rods 4 (here, the left connecting rod 4a) is fixed in the front-rear direction together with the one connecting rod 8a. Rotate upward around the axis. The rotation of the one seat rod 4a and the connecting rod 8a is transmitted symmetrically to the other seat rod 4b and the connecting rod 8b via the connecting members 43 and 44, and the other seat rod 4b and the connecting rod 8b are also supported by the other support body. Rotate upward about an axis in the front-rear direction with respect to 1.

これによって、背面図である図４（Ｂ）に示すように、左右の支持体１，１が互いに接近し、これに伴って左右の補強連結杆５，５が互いに平行となる位置から支持体１，１に対して上下方向の軸廻りに背面側に向けて回転する。この結果、背面図である図４（Ｃ）に示すように、左右の補強連結杆５，５が、互いに接近した左右の支持体１，１の間における左右の座席杆４ａ，４ｂの下方に収納される。   As a result, as shown in FIG. 4B, which is a rear view, the left and right supports 1, 1 approach each other, and accordingly, the left and right reinforcing connecting rods 5, 5 are supported from a position parallel to each other. Rotate toward the back side about the vertical axis with respect to 1,1. As a result, as shown in FIG. 4C, which is a rear view, the left and right reinforcing connecting rods 5, 5 are located below the left and right seat rods 4a, 4b between the left and right supports 1, 1 that are close to each other. Stored.

図２に示したように、左右の座席杆４ａ，４ｂが平面位置にある状態で、左右の連結杆８う，８ｂの上面に一部が対向するように座席６の前後方向の長さが設定されている。したがって、左右の座席杆４ａ，４ｂを座席６ととともに略垂直となる位置に回転させた際には、左右の連結杆８ａ，８ｂの前面側に座席６の一部が下端部として位置し、この部分が補強連結部材５３の背面に当接する。これによって、左右の補強連結杆５，５は、上下方向の軸廻りにおける背面側への回転を規制され、歩行中に左右の支持体１，１が左右方向に変位することを防止できる。   As shown in FIG. 2, in the state where the left and right seat rods 4a, 4b are in a planar position, the length of the seat 6 in the front-rear direction is such that a part thereof faces the upper surfaces of the left and right connecting rods 8, 8b. Is set. Therefore, when the left and right seat rods 4a and 4b are rotated together with the seat 6 to a substantially vertical position, a part of the seat 6 is positioned as the lower end on the front side of the left and right connecting rods 8a and 8b. This portion contacts the back surface of the reinforcing connecting member 53. Accordingly, the left and right reinforcing connecting rods 5 and 5 are restricted from rotating to the back side around the vertical axis, and the left and right supports 1 and 1 can be prevented from being displaced in the left-right direction during walking.

以上のようにして、この歩行補助車１０は、板状の座席６を左右の支持体１，１の間で左右方向の軸廻りに回転自在に備えながらも、左右の支持体１，１を互いに左右方向に接近させて折り畳むことができ、安定した着座姿勢をとることができるようにしつつ、収納スペースを十分に小さく構成することができる。また、座席６を略垂直となる位置にした歩行時に、左右の支持体１，１が互いに左右方向に近接することを確実に防止でき、歩行中の使用者の安全性を確保することができる。   As described above, the walking auxiliary vehicle 10 includes the left and right supports 1, 1 while the plate-like seat 6 is provided between the left and right supports 1, 1 so as to be rotatable about a left-right axis. The storage space can be made sufficiently small while being able to be folded close to each other in the left-right direction so that a stable seating posture can be taken. In addition, when walking with the seat 6 in a substantially vertical position, the left and right supports 1, 1 can be reliably prevented from approaching each other in the left-right direction, and the safety of the user during walking can be ensured. .

なお、座席杆４及び座席６を略垂直となる位置に固定する固定部材として、背当て７と座席６の座面とのそれぞれの当接位置に、例えば面ファスナーを設けることもできる。また、背当て７又は座席６の底面との何れか一方に布等の可撓性材料からなるテープの一端を固定し、背当て７又は座席６の底面の他方とテープの他端とに面ファスナーを設け、背当て７及び座席６における使用者との接触部分に面ファスナーが露出しないようにしてもよい。   For example, a hook-and-loop fastener may be provided at each contact position between the backrest 7 and the seating surface of the seat 6 as a fixing member that fixes the seat rod 4 and the seat 6 to a substantially vertical position. In addition, one end of a tape made of a flexible material such as cloth is fixed to either the backrest 7 or the bottom surface of the seat 6, and the other surface of the backrest 7 or the seat 6 is fixed to the other end of the tape. A fastener may be provided so that the hook-and-loop fastener 7 and the seat 6 do not expose the hook-and-loop fastener at contact portions with the user.

の発明の実施形態に係る歩行補助車の正面図、左側面図及び背面図である。It is the front view, the left view, and the rear view of the walk auxiliary vehicle which concern on embodiment of this invention. 上記歩行補助車の連結杆近傍の構成を示す底面図である。It is a bottom view which shows the structure of the connecting rod vicinity of the said walking assistance vehicle. 上記歩行補助車における連結部材の一例を示す平面図、正面図及び底面図である。It is the top view which shows an example of the connection member in the said walk auxiliary vehicle, a front view, and a bottom view. 上記歩行補助車の使用状態を説明する図である。It is a figure explaining the use condition of the said walk auxiliary vehicle. 上記歩行補助車における固定部材の一例を示す図である。It is a figure which shows an example of the fixing member in the said walk auxiliary vehicle.

符号の説明Explanation of symbols

１ 支持体
２ 前輪（車輪）
３ 後輪（車輪）
４ 座席杆
５ 補強連結杆
６ 座席
７ 背当て
８ 連結杆
１０ 歩行補助車
１６ 固定部材
４３ 第１の連結部材
４４ 第２の連結部材
４５ 規制部材
５３，５４ 補強連結部材 1 Support 2 Front Wheel (Wheel)
3 Rear wheels
DESCRIPTION OF SYMBOLS 4 Seat rod 5 Reinforcement connection rod 6 Seat 7 Backrest 8 Connection rod 10 Walk auxiliary vehicle 16 Fixed member 43 1st connection member 44 2nd connection member 45 Restriction member 53,54 Reinforcement connection member

Claims (2)

それぞれの前側下端部及び後側下端部に車輪を軸支した左右の支持体と、
左右の支持体のそれぞれにおいて一端部を前後方向の軸廻りに回転自在に支持され、水平位置において長手方向が左右方向に一致する左右の連結杆と、
左右の連結杆のそれぞれの開放端である他端部を前後方向の軸廻りにおける左右の連結杆の水平位置から下方への移動を規制して連結する第１の連結部材と、
それぞれの一端部において左右の連結杆のそれぞれの中間部に左右方向の軸廻りに回転自在に支持された左右の座席杆と、
左右の座席杆の他端部を前後方向の軸廻りにおける左右の連結杆の回転に伴う左右の座席杆の水平位置から下方への移動を規制して連結する第２の連結部材と、
左右方向の軸廻りにおける左右の座席杆の水平位置から下方への移動を規制する規制部材と、
左右の座席杆を左右方向の軸廻りにおける水平位置から上方に回動して略垂直となる位置で選択的に固定する固定部材と、
左右の座席杆の上面側で一方の座席杆に固定された板状の座席と、
を備え、水平位置における左右の座席杆を左右の連結杆の背面側に配置したことを特徴とする歩行補助車。 Left and right supports that pivotally support the wheels at the front lower end and the rear lower end,
In each of the left and right support bodies, one end is rotatably supported around the axis in the front-rear direction, and the left and right connecting rods whose longitudinal direction matches the left-right direction at the horizontal position,
A first connecting member for connecting the other end, which is the open end of each of the left and right connecting rods, by restricting the downward movement of the left and right connecting rods from the horizontal position around the longitudinal axis;
Left and right seat rods rotatably supported around the left and right axis at the respective intermediate portions of the left and right connecting rods at respective one end portions;
A second connecting member that connects the other end portions of the left and right seat rods by restricting the downward movement of the left and right seat rods from the horizontal position associated with the rotation of the left and right connecting rods about the longitudinal axis;
A regulating member that regulates the downward movement of the left and right seat rods from the horizontal position around the left and right axis;
A fixing member for selectively fixing the left and right seat rods at a position that is substantially vertical by rotating upward from a horizontal position around the axis in the left-right direction;
A plate-like seat fixed to one seat rod on the upper surface side of the left and right seat rods;
A walking auxiliary vehicle characterized in that left and right seat rods in a horizontal position are arranged on the back side of the left and right connecting rods. それぞれの一端部が前記左右の支持体のそれぞれの前面側において略鉛直方向の軸廻りに回転自在に支持された少なくとも左右各１つの補強連結杆と、
左右の補強連結杆のそれぞれの他端部を前面方向への移動を規制して連結するとともに、左右の座席杆に伴って略垂直位置に回転した座席の下端部が背面側に当接する補強連結部材と、
をさらに設けたこと特徴とする請求項１に記載の歩行補助車。 At least one left and right reinforcing connecting rods, each of which is rotatably supported around a substantially vertical axis on the front side of each of the left and right supports,
Reinforced connection where the other ends of the left and right reinforcing connecting rods are connected by restricting movement in the front direction, and the lower end of the seat rotated to a substantially vertical position with the left and right seat rods contacts the back side Members,
The walking auxiliary vehicle according to claim 1, further comprising:
JP2003354261A 2003-10-14 2003-10-14 Walking assistance vehicle Expired - Fee Related JP3809584B2 (en)

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JP3809584B2 true JP3809584B2 (en) 2006-08-16

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007014685A (en) * 2005-07-11 2007-01-25 Kawamura Cycle:Kk Walker
NL2014343B1 (en) * 2015-02-24 2016-10-13 Bobergo B V Rollator-trolley.
JP6234985B2 (en) * 2015-12-22 2017-11-22 株式会社島製作所 Wheelbarrow

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