JP4047914B1 - wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a person from being burdened while hardly disturbing people around.
[Configuration] The front chair frame 10 that supports the front wheel 11, the seat surface portion 12, the elbow rest portion 13, the hand pushing handle 14, and the leg rest portion 15, the rear wheel 21, and the front chair frame body 10 are disposed behind the front wheel frame. A rear chair frame 20 that supports the rear wheel moving mechanism 22; a backrest 30 that is provided on the rear side of the rear chair frame 20 so as to be inclined from a substantially vertical state to a rearward state; and a front chair frame. Guide means 40 is provided for guiding the body 10 with respect to the rear chair frame 20 so as to be retractable.
[Selection] Figure 1

Description

  The present invention relates to a wheelchair used by a physically handicapped person, and more particularly to a wheelchair that does not interfere with surrounding people in a hospital room or the like.

A conventional foldable wheelchair has a structure in which a seat surface portion and a backrest portion are made of a flexible material such as cloth, and the space between the left and right main body frames is narrowed (for example, Patent Document 1). .)
JP 2005-028044 A

  Such a foldable wheelchair is very convenient because it can be folded after the user moves to a chaise longue in a hospital waiting room, a bed in a hospital room, etc., and does not get in the way of people around.

  However, in the case of the above conventional example, it is necessary to stand up when moving from a wheelchair to a chaise longue, a bed, etc., and there is a problem of placing a burden on the user or attendant.

  The present invention was created under the above-described background, and it is an object of the present invention to provide a wheelchair that hardly disturbs the people around and does not impose a burden on the user or the like.

Roll according to the present invention, disposed to the rear of the front chairs frame and the front chair frame body is a frame supporting at least a pair of right and left front wheels and seat portion, a frame for supporting the rear wheels of at least a left-right pair and the side chair frame body after being, and a backrest portion provided to be inclined backward in the inclined state from a substantially vertical position on the rear side of the rear chair frame, said back portion is in the inclined state and the seat surface bets are the front chair frame body so as to be able to overlap vertically and a guide means for retracting freely guided to the rear chair frame.

Wherein the guide means extends in the longitudinal direction is a component of the internal to the front chair frame of the rear chair frame configuration section pair of horizontal frame portion of the longitudinal direction extended cross section tubular is was inserted each said pair of left and right horizontal frame portion, it is preferable to adopt a configuration that is slidable.

For the rear chair frame is provided with the backrest horizontal frame portion a pair of left and right rotation axes are arranged in the rear end portion a member extending in the longitudinal direction, the rear wheel is provided at the lower end and a pair of right and left rear legs frame portions, each interposed a mechanism between the rear side of the pair of left and right horizontal frame portion and the back portion of the lower side portion and the upper portion of the pair of right and left rear legs frame portion And it is desirable to make it the structure which has a left-right paired rear-wheel moving mechanism which lifts the said rear wheel with the inclination to the lying state of the said backrest part.

For the rear wheel moving mechanism, a first link arm pivotally end in a horizontal plane in the front portion of the horizontal frame portion of the rear chair frame is connected, the other end of the first link arm rotatably one end is connected in a horizontal plane section, rotatably in a horizontal plane to the lower end of the backrest and a second link arm the other end is connected, the second link arm the upper end of the rear leg frame section is desirable that the coupling configurations to be rotatable.

Wherein the pair of right and left elbows portion on the front side chair frame, it is desirable to allow tilting of the elbow portion is substantially vertical state to the inclined state toward the outside.

Wherein for hand handle provided on the front chair frame, it is desirable that the hand handle is in a position in front of the rearmost position of the front chair frame including its grip.

  In the case of the wheelchair according to claim 1 of the present invention, the backrest part is tilted backward and brought into contact with the surface of a chaise longue or bed, and in this state the front chair frame is moved backward with respect to the rear chair frame. The seat portion is positioned on the backrest portion in a lying state. That is, it becomes possible to move to a chaise longue or bed without standing up. In addition, since the front chair frame is retracted with respect to the rear chair frame, the length dimension in the front-rear direction is shortened, so that it hardly disturbs the people around.

  In the case of the wheelchair according to claim 2 of the present invention, not only the configuration of claim 1, but also the configuration of the front and rear chair frame body as a guide means, In addition to the effect, it is possible to reduce the weight and cost.

  In the case of the wheelchair according to claim 3 or 4 of the present invention, not only the configuration of claim 1, but also the configuration in which the rear wheel is lifted with the inclination of the backrest portion, in addition to the effect of claim 1, The interference between the front wheel and the rear wheel is small, and the length dimension in the front-rear direction can be further reduced in this respect.

  In the case of the wheelchair according to claim 5 of the present invention, not only the configuration of claim 1 but also the pair of left and right elbow rests can be tilted outward, so that the effect of claim 1 is achieved. In addition, the user can actually move the user on the surface of a chaise lounge, bed, etc. without the obstruction being an obstacle, which is very convenient. Not only the configuration of claim 1,

  In the case of the wheelchair according to claim 6 of the present invention, not only the structure of claim 1, but also the structure in which the handle for pushing is located at the same position as the rearmost position of the front chair frame body including the grip or at the front side thereof. Therefore, in addition to the effect of the first aspect, the front chair frame can be retracted as much as possible without worrying about the obstacles behind, and the usability is very good in this respect.

  Hereinafter, embodiments of the wheelchair of the present invention will be described with reference to the drawings. 1 is a schematic side view of a wheelchair, FIG. 2 is a schematic front view and rear view of the wheelchair, FIG. 3 is a side view and front view showing a rear wheel moving mechanism and the like of the wheelchair, and FIG. 4 is a method of using the wheelchair. It is a schematic diagram for demonstrating.

  As shown in FIGS. 1 and 2, the wheelchair described here is a front chair frame that is a frame that supports the front wheel 11, the seat surface portion 12, the elbow rest portion 13, the hand pushing handle 14, and the leg rest portion 15. 10, a rear wheel 21, a frame that supports the rear wheel moving mechanism 22, a rear chair frame 20 disposed behind the front chair frame 10, and a substantially vertical rear side of the rear chair frame 20. The backrest 30 is provided so as to be able to incline backward from the state, and the guide means 40 guides the front chair frame 10 to the rear chair frame 20 so as to be retractable.

  In addition, the front wheel 11, the elbow rest part 13, the hand handle 14 and the leg rest part 15 are a pair of left and right and are provided on the front chair frame 10. The rear wheel 21 and the rear wheel moving mechanism 22 are also a pair of left and right, and are provided on the rear chair frame 20.

  The front chair frame 10 includes a pair of left and right front leg frames 101 and 101 each having front wheels 11 and 11 provided at the lower ends thereof, and a substantially cylindrical cross section connected to the upper ends of the front leg frames 101 and 101 at right angles. A pair of left and right horizontal frame portions 103, 103 extending in the front-rear direction and a pair of left and right vertical frame members 104, 104 vertically connected to the rear end portions of the horizontal frame portions 103, 103, respectively, The left front leg frame portion 101 and the horizontal frame portion 103 and the right front leg frame portion 101 and the horizontal frame portion 103 are connected to each other.

  The seat surface portion 12 is a plate-like resin molded product, and is provided between the left horizontal frame portion 103 and the right horizontal frame portion 103. The elbow rests 13 are respectively provided on the upper part of the horizontal frame 103 and can be inclined from the substantially vertical state toward the outside in the lying down state. The leg placement portions 15 are provided on the upper portions of the front leg frame portions 101 and 101 in an obliquely downward direction.

  About the handle 14 for pushing, it is provided in the upper end part of the vertical frames 104 and 104 of the front chair frame 10, respectively, and is located in the front side of the rearmost position of the front chair frame 10 including the grip 141. .

  The rear chair frame 20 includes a pair of left and right rear leg frame parts 201 and 201 having a rear wheel 21 provided at the lower end part, a lower end part of the left rear leg frame part 201 and a lower end of the right rear leg frame part 201. A lower frame part 202 that connects the two parts, a pair of left and right horizontal frame parts 203, 203 that are connected to the upper ends of the rear leg frame parts 201, 201 at right angles and extend in the front-rear direction, A pair of left and right rear wheel moving mechanisms 22, 22 respectively interposed between the rear side portion of the frame portions 203, 203 and the lower one side portion of the backrest portion 30 and the upper end portions of the rear leg frame portions 201, 201. ing.

  The rear wheel moving mechanism 22 is a mechanism using a four-bar link that lifts the rear wheel 21 upward while moving the rear wheel 21 in accordance with the inclination of the backrest 30 to the lying down state, as shown in FIG. As shown, the first link arm 221 having one end connected to the front side of the horizontal frame 203 so as to be rotatable in a horizontal plane, and the other end of the first link arm 221 having one end rotatable in the horizontal plane. The second link arm 222 is connected to the lower end portion of the backrest portion 30 so as to be rotatable in a horizontal plane. The other end portion of the second link arm 222 and the backrest portion 30 The upper end portion of the rear leg frame portion 21 is rotatably connected to the lower end portion.

  The horizontal frame portion 203 has a substantially H-shaped cross section shown in FIG. 3D, and the horizontal frame portion 103 of the front chair frame body 10 can be inserted into the upper linear hole 2031. On the other hand, in the lower linear hole 2032, the upper end portion of the rear leg frame portion 201 of the rear chair frame body 20 and a part of the first link arm 221 and the second link arm 222 of the rear wheel moving mechanism 22 can be inserted. It has become.

  For the guide means 40, the horizontal frame portion 103 of the front chair frame body 10 is inserted into the horizontal frame portion 203 of the rear chair frame body 20, and the lower surface of the horizontal frame portion 203 and the upper straight hole of the horizontal frame portion 103 are inserted. The horizontal frame portion 103 is configured to be slidable with respect to the horizontal frame portion 203 with an elastomeric bar 41 sandwiched between the inner bottom surface of 2031. Note that the horizontal frame portion 203 of the rear chair frame body 20 and the horizontal frame portion 103 of the front chair frame body 10 are provided with a slide amount regulating means by a guide elongated hole formed in the length direction and a pin entering the same. Is provided.

  The backrest 30 is a plate-shaped resin molded product, and both lower sides thereof are on the rear end of the horizontal frame 203 of the rear chair frame 20 and the other end of the second link arm 222 of the rear wheel moving mechanism 22. It is pivotally supported and is provided so as to be able to incline from the substantially vertical state to the backward state. Note that the vertical frame bodies 104, 104 of the front chair frame body 10 are provided with stoppers (not shown) for maintaining the backrest portion 31 in a substantially vertical state.

  The usage method of the wheelchair comprised in this way is demonstrated. First, it is assumed that the user enters a hospital room or the like while on the wheelchair and moves to the front of the chaise longue A as shown in FIG. Then, the chaise longue A is moved back straight after the back. After the wheelchair rear wheel 21 is moved until it contacts the front surface of the chaise longue A, the stopper is released, and the backrest 30 is tilted backward from the substantially vertical state (see FIG. 4B).

  When the backrest 30 is inclined from the substantially vertical state to the lying down state, the front end portion of the backrest 30 is not only in contact with the seat surface of the chaise longue A, and accordingly, FIGS. As shown in FIG. 4C, the first link arm 221 and the second link arm 222 overlap in a straight line from a substantially right angle, and as a result, the rear wheel 21 is slightly lifted upward while moving forward (FIG. 4C )reference).

  Then, in the state where the backrest 30 is inclined to the lying state, the front chair frame 10 is moved backward with respect to the rear chair frame 20. Then, the seat surface portion 12 and the backrest portion 30 placed in a lying state overlap vertically (see FIG. 3C), and the front wheel 11 comes close to the rear wheel 21 (see FIG. 4D). .

  It should be noted that when moving from the chaise longue A or the like, it is only necessary to perform an operation reverse to the above. Moreover, when the backrest part 30 is in a substantially vertical state, the rear side end of the seat surface part 12 is in contact with the surface of the backrest part 30, so there is no possibility that the front chair frame body 10 will be retracted by mistake.

  Thus, in the state where the front chair frame 10 is moved backward, the front chair frame 10 and the rear chair frame 20 overlap each other and deeply enter the chaise longue A, and the size of the wheelchair in the front-rear direction is greatly increased. It is small, and with it, there is almost no obstruction around you.

  Moreover, since the user does not get up from the wheelchair and moves to the chaise longue A, the user or the attendant is not burdened at all. Moreover, since the handle 14 for hand pushing is located in the front side of the rearmost position of the front chair frame body 10 including the grip 141, the front chair frame body 10 is maximized without worrying about the obstacles behind. It is possible to make the limit backward, and this is very convenient.

  But when it is necessary for a user to actually move to the chaise longue A, it is good to incline the elbow rest part 13 in the lying down state outside (refer FIG. 2). The same applies when moving to the bed instead of the chaise longue A, but even in these cases, the burden on the user or attendant can be minimized.

  In addition, the wheelchair which concerns on this invention is not limited to the said embodiment, Even if it is a foldable type and an electric type, it is applicable similarly. In addition, if the design of the shape of the front chair frame and the rear chair frame, the size of the front wheels and the rear wheels, the shape of the seat surface and the backrest, the material, the shape of the handwheel handle and the mounting position, etc. may be changed as appropriate. good.

  In particular, as long as the backrest portion can be tilted from the substantially vertical state to the rearward side in the rear side of the rear chair frame body, the mechanism is not questioned. As for the guide means, as long as it is configured to guide the front chair frame so as to be retractable with respect to the rear chair frame so that the seat surface part and the backrest part in a lying state can overlap vertically, Such a kind may be used.

It is a figure for demonstrating embodiment of the wheelchair which concerns on this invention, Comprising: It is a typical side view of a wheelchair. (A) is a schematic front view of the wheelchair, and (b) is a rear view thereof. (A)-(c) is a side view which shows the rear-wheel moving mechanism etc. of the wheelchair, (d) is the front view. (A)-(d) is a schematic diagram for demonstrating the usage method of the wheelchair.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Front side chair frame 11 Front wheel 12 Seat surface part 13 Elbow rest part 14 Handle for hand pushing 20 Rear side chair frame 21 Rear wheel 22 Rear wheel moving mechanism 30 Backrest part

Claims (6)

At least a pair of left and right front wheels and the seat part front chair frame body is a frame supporting at least the left and right pair of rear wheels to a frame supporting the front chair frame side chair frame after being placed behind the When the backrest portion provided to be inclined backward in the inclined state from a substantially vertical position on the rear side of the rear chair frame, and is in the inclined state and the seat surface portion said back portion may overlap in the vertical wheelchair, characterized in that it comprises a guide means for retracting freely guiding the front chair frame body so as to be against the rear chair frame. In wheelchair according to claim 1, wherein the guide means in the configuration of the front chair frame inside the rear chair frame structure portion at a pair of horizontal frame portion of the longitudinal direction extended cross section tubular Roll inserting each said pair of left and right horizontal frame portions extending in the longitudinal direction is a part, is characterized in that has a configuration in which the slidable. In wheelchair according to claim 1, wherein the rear chair frame has a horizontal frame portion a pair of left and right rotation axes are arranged in the backrest in the rear end a member extending in the longitudinal direction, the rear wheels and pair of rear legs frame portion provided at a lower end portion, said pair of lower side portion of the side and the back portion of left and right rear pair of horizontal frame portion and the upper end portion of the rear leg frame section wheelchair, characterized in that it has a pair of left and right rear wheels moving mechanism a respectively interposed a mechanism to lift the rear wheels with the inclination of the inclined state of the backrest between. In wheelchair according to claim 3, wherein the rear wheel moving mechanism includes a first link arm pivotally end in a horizontal plane in the front portion of the horizontal frame portion of the rear chair frame is connected, the is connected is rotatably one end in the horizontal plane to the other end of the first link arm, have a second link arm pivotally other end in a horizontal plane to the lower end of the backrest is connected wheelchair, and the upper end of the rear leg frame section to said second link arm is characterized in that become linked configured to be rotatable. In wheelchair of claim 1, wherein the front chair frame is provided with a pair of left and right elbow portion, it has become tiltable inclined state toward the outside the elbow portion from a substantially vertical state A wheelchair characterized by In wheelchair of claim 1, wherein the front chair frame has a handle for hand is provided, and the position on the front side of the rearmost position of the hand for handle including its grip the front chair frame A wheelchair characterized by being.