JP2016049233A - wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheelchair which is arranged with a belt supporting the vicinity of a pelvis of an occupant without narrowing an effective width of a seat, and facilitates rotation or detachment of a seat lateral part.SOLUTION: A wheelchair 1 includes: a seat sheet 4; a back sheet 11; seat lateral parts 3, 3; and right/left rear rod-like members 26, 26 mounted with the back sheet 11. Each seat lateral part 3 includes an arm support 37 and can be rotated or detached with respect to the rear rod-like member 26. Belt mounting members 29 separate from the seat lateral parts 3 are respectively arranged at positions of the seat sheet 4 not interfering the rotation or detachment of the right/left seat lateral parts 3. Each belt mounting member 29 includes a belt mounting part 292 arranged in a front side with respect to the rear rod-like member 26 and in a lower side with respect to the arm support 37. An end 191 of a pelvis support belt 19 is mounted on each belt mounting part 292. Each belt mounting part 292 is positioned at the generally same position as an inner side face 3a of the seat lateral part 3 or on an outer side of the inner lateral face 3a in a front face view.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wheelchair, and more particularly to a wheelchair provided with a belt that supports the vicinity of the pelvis of a passenger.

  A conventional wheelchair is described in Patent Document 1 below. In this wheelchair, apart from the backrest belt, belt-like adjustment belts are respectively extended from the inner surface of the side wall portion of the seat, and these adjustment belts are connected and attached to the backrest belt. These adjustment belts are arranged below the arm support (armrest) and extend from a position in front of the vertical pipe to which both ends of the backrest belt are attached. It can be placed close to the lower part (that is, near the pelvis), and can support the lower part of the passenger's back with emphasis.

  In addition, as a conventional wheelchair, there is one in which a seat side portion (corresponding to a side wall portion of a seat) provided with an arm support is made rotatable or detachable in order to facilitate the transfer of a passenger. (See Patent Document 2 below).

Japanese Patent No. 3794691 JP 2005-111173 A

  By the way, when the belt for supporting the vicinity of the pelvis of the occupant is bridged between the left and right seat side portions like the adjustment belt described in Patent Document 1, the seat side portion is rotated or removed. Is difficult because the belt regulates the movement of the seat side. The adjustment belt described in Patent Document 1 does not restrict the movement of the seat side when the connection is released, but the seat side is rotated to transfer to the bed or the like from the state where the passenger is on. When it is desired to remove or remove, the passenger is in a state of being caught in the adjustment belt, so that it is difficult to release the connection, and it is also difficult to turn the seat side.

  Therefore, in order to facilitate the rotation of the seat side portion, it is conceivable to attach a belt that supports the vicinity of the pelvis to another member that is not the seat side portion. In such a case, the effective width of the seat ( There was a demand for not wanting to narrow the width that the passenger can actually sit on.

  The present invention solves the above-described problem, and a belt that supports the vicinity of the pelvis of the occupant is provided without reducing the effective width of the seat, and the seat side portion can be easily rotated or removed. The purpose is to provide a wheelchair.

  The wheelchair of the present invention includes a seat on which a passenger sits, a backrest on which the passenger can lean, a seat side provided on each of the left and right sides of the seat, and a rear of the seat. And left and right rear heel members mounted on the backrest portion, and each seat side portion includes an arm support and rotates with respect to the corresponding rear heel member In a wheelchair configured to be detachable or detachable, belt mounting members that are separate from the seat side portions are provided at positions that do not hinder the rotation or detachment of the left and right seat side portions of the seat portion. Each belt mounting member has a belt mounting portion disposed in front of the corresponding rear saddle-shaped member on the corresponding side and disposed below the arm support. Is attached with a belt made of a belt-like member. DOO mounting portion, in a front view, and being located outside the inner surface substantially the same position or the inner surface of said seat side portions of the corresponding side.

  According to the present invention, in the front view, the belt is mounted on the left and right belt mounting portions that are located at substantially the same position as the inner side surface of the corresponding seat side portion or outside the inner side surface. The belt is provided without reducing the effective width of the seat, which is determined by the distance between the inner side surfaces of the section. Further, each belt mounting portion is disposed in front of the corresponding rear saddle member, and is disposed below the corresponding side arm support. For this reason, the belt mounted on the belt mounting portion is disposed in the vicinity of the pelvis of the passenger, and can support the vicinity of the pelvis of the passenger. Each belt mounting member including the belt mounting portion is provided at a position that does not prevent rotation or attachment / detachment of the seat side portion separately from the seat side portion. It can be provided and the seat side portion can be easily rotated or removed.

It is a perspective view of the wheelchair concerning one embodiment of the present invention. It is a perspective view of the state which removed each seat and pelvis support belt of the wheelchair. It is a principal part front view of the wheelchair. It is a principal part rear view of the wheelchair. It is a principal part top view of the wheelchair. It is a principal part side view before the rotation of the seat side part of the wheelchair. It is a principal part side view after the rotation of the seat side part of the wheelchair. It is principal part sectional drawing which shows the state in the middle of folding of the wheelchair.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the left and right refer to the left and right for the passenger of the wheelchair 1.

  As shown in FIG. 1, the wheelchair 1 according to the embodiment includes left and right side frames 2, 2, a flexible seat seat 4 disposed between the side frames 2, 2, and a lower portion of the seat seat 4. The folding mechanism 5 disposed between the side frames 2 and 2 and the left and right front wheels 12 and 12 and the rear wheels 13 and 13 attached to the side frames 2 and 2 are provided. In addition, in order to make the main part easy to see, the members are appropriately illustrated by two-dot chain lines. The seat 4 corresponds to a seat where a passenger sits.

  Each side frame 2 extends in the front-rear direction and has an upper flange-shaped member 21 with an arm support 37 attached to the upper surface, an intermediate flange-shaped member 22 disposed below the upper flange-shaped member 21 and extending in the front-rear direction, A front hook-like member 25 connected to the front end of the member 22 and extending in the vertical direction, and a lower hook-like shape arranged below the intermediate hook-like member 22 and extending in the front-rear direction and connected to the front hook-like member 25. The member 24 and the rear part of the lower collar member 24, the rear edge part of the intermediate collar member 22, and the rear edge part of the upper collar member 21 extending in the vertical direction are connected to each other, and the rear part of the seat 4 is erected. A rear saddle member 26 is provided. Each of these bowl-shaped members is made of a metal pipe.

  Each side frame 2 includes, as a side plate support frame 30, a front support rod 31 extending in an arc shape downward from the front of the middle portion of the upper collar member 21, a rear support rod 32 extending downward from the rear portion of the upper collar member 21, And the lower support rod 33 which connects the lower end part of the rear support rod 32 and the lower part of the front support rod 31 is provided. The front support rod 31, the rear support rod 32, and the lower support rod 33 are made of metal pipes. The side plate support frame 30 has a synthetic resin side plate 35 having a plurality of engaging portions 35 a formed on the peripheral edge thereof, and engages the engaging portions 35 a with the front support rod 31, the rear support rod 32 and the lower support rod 33. It is arranged by doing. Each side frame 2 includes a reinforcing hook-shaped member 34 made of a thin metal plate that connects a rear portion of the upper hook-shaped member 21 and an intermediate portion of the lower support rod 33.

  A lock mechanism 36 for locking the front support rod 31 to the intermediate rod-shaped member 22 is provided at the lower end of each front support rod 31. Specifically, as shown in the circle of FIG. 6, the lock mechanism 36 includes a rotatable lever 361 and a locking portion 362 on which the lever 361 is locked, and as indicated by a two-dot chain line arrow, By turning the lever 361, the lever 361 is detached from the locking portion 362, the lock mechanism 36 is released, and by turning the lever 361 in the direction opposite to the two-dot chain line arrow, the locking portion 362 is released. The lever 361 is engaged with the lock mechanism 36, and the lock mechanism 36 is locked. Note that a winding spring (not shown) is attached to the rotation shaft of the lever 361 to urge the lever 361 in the direction opposite to the two-dot chain arrow in the circle of FIG. When the lock mechanism 36 is released, the seat side portion 3 including the upper collar member 21, the arm support 37, the side plate support frame 30, the side plate 35, and the reinforcing collar member 34 is disposed behind the upper collar member 21. It is possible to rotate upward about a shaft portion 38 provided at the connecting portion with the rear saddle member 26 at the end.

  As described above, on the left side and the right side of the seat 4, the seat side portion 3 composed of the arm support 37, the upper collar member 21, the side plate support frame 30, the reinforcing collar member 34, and the side plate 35, respectively. Is arranged, and each seat side part 3 is rotatable with respect to the corresponding rear hail member 26. The corresponding side means the right side if it is a right member or part, and the left side if it is a left member or part.

  A footrest support rod 15 having an inverted L shape is connected to each front collar member 25, and a footrest 16 is attached to the lower end portion of each footrest support rod 15.

  Each rear hook-like member 26 extends upward, and a handle 17 is attached to the upper end portion thereof. The left and right rear hook-like members 26, 26 are provided on the corresponding side of the flexible cloth back sheet 11. The end is attached. The back seat 11 corresponds to a backrest portion on which a passenger can lean.

  As shown in FIGS. 2 and 3, each intermediate saddle member 22 has a seat pipe receiving portion 27 that protrudes to the inside of the wheelchair 1 (the side on which the user of the wheelchair 1 sits). It is installed. Each seat pipe receiving portion 27 is made of metal and has a substantially rectangular plate shape, and a distal end portion 27a facing the inside of the wheelchair 1 is bent upward. The intermediate hook-shaped member 22 and the seat pipe receiving portions 27 and 27 disposed before and after the intermediate hook-shaped member 22 constitute the seat pipe support portion 20. That is, the left and right side frames 2 and 2 each include a seat pipe support portion 20.

  The folding mechanism 5 is, as shown in FIGS. 2 to 4, a front crossbar 6 that is X-shaped when viewed from the front, and a rear crossbar 7 that is disposed behind the front crossbar 6 and is X-shaped when viewed from the front. And connecting members 74 connected to the rear crossbar 7. The front cross bar 6 is disposed behind the seat pipe receiving portion 27 protruding from the front portion of each intermediate hook-shaped member 22, and the rear cross bar 7 is protruded from the rear portion of each intermediate hook-shaped member 22. The seat pipe receiving portion 27 is disposed in front of the seat pipe receiving portion 27.

  The front cross bar 6 is configured by crossing front bar members 61, 61 made of metal pipes in an X shape and connecting them with a shaft 62 at the crossing portion so as to form an X shape in a front view. The left and right lower ends of the front crossbar 6 are respectively connected to the front crossbar connecting member 231 having a U-shape in plan view and projecting from the corresponding lower collar member 24 to the inside of the wheelchair 1. The shaft is pivotally mounted. Therefore, the front cross bar 6 can be folded so as to reduce the width in the left-right direction (vehicle width direction) by rotating the front bar members 61, 61 about the shaft 62, and the width in the left-right direction can be increased. It can be expanded to expand.

  As shown in FIG. 4, the rear cross bar 7 is configured by intersecting metal bar-shaped rear bar members 71, 71 in an X shape and connecting the intersecting portions with a shaft 72. The left and right lower ends of the rear crossbar 7 are arranged in an X shape in view, and are respectively U-shaped in a plan view projecting from the corresponding lower collar member 24 to the inside of the wheelchair 1. A rear crossbar connecting member 232 (see FIG. 2) is pivotally attached to the rear crossbar connecting member 232 (see FIG. 2). Therefore, the rear crossbar 7 can be folded so as to reduce the width in the left-right direction by rotating the rear bar members 71, 71 about the shaft 72, and can be expanded so as to increase the width in the left-right direction. It is.

  Further, one end of a metal thin plate-like connecting member 74 is pivotally attached to an intermediate portion between the shaft 72 and the upper end of each rear bar member 71, and the other end of each connecting member 74 is The connecting member supporting portion 28 having a thin metal plate protruding downward from the corresponding intermediate flange-like member 22 is pivotally mounted on the shaft. Each connecting member 74 is bent in a “<” shape, and is arranged so that the bent portion protrudes downward in the unfolded state of the rear crossbar 7. When 2 is pressed, the rotation direction of each rear bar member 71 is guided in a direction in which the width of the rear cross bar 7 in the left-right direction is reduced.

  The wheelchair 1 also includes seat pipes 8 and 8 fixed to the left and right ends of the seat 4 respectively. The left seat pipe 8 is on the left upper end of the front cross bar 6 and the left upper end of the rear cross bar 7, and the right seat pipe 8 is on the right upper end of the front cross bar 6 and the rear cross bar 7. In the state where the folding mechanism 5 is unfolded, that is, in the state where the seat seat 4 is unfolded, along the intermediate flange-shaped member 22 on the corresponding side. As described above, it is supported by the seat pipe support 20 and is disposed inside the intermediate bowl-shaped member 22.

  As shown in FIGS. 2 to 4, each seat pipe 8 is fitted with a synthetic resin stopper member 9 at a position corresponding to the front and rear seat pipe receiving portions 27. Each stopper member 9 has a substantially cylindrical shape in which the axial direction is along the front-rear direction, and a restriction portion 92 that protrudes downward is formed at the front end portion and the rear end portion of the lower wall portion. When supported by the seat pipe receiving portions 27, 27, the seat pipe receiving portion 27 is disposed between the front and rear restricting portions 92, 92.

  As shown in FIGS. 1 and 2, the seat pipes 8 and 8 are fixed to end portions 41 on the corresponding side of the seat 4 (not shown in FIG. 2). Specifically, a metal thin plate-like core member 42 is inserted into the left and right end portions 41 of the seat 4, and the stopper members 9 are inserted from the front end and the rear end of the seat pipe 8. The screws 9 are inserted into the seat sheet 4, the core member 42, and the upper wall portion of the seat pipe 8 so that the members 9 and 9 are sandwiched between the core member 42 covered with the seat sheet 4 and the seat pipe 8. By doing so, the seat 4 and each stopper member 9 are fixed to the seat pipe 8.

  In addition, as shown in FIGS. 1 to 5, the wheelchair 1 has a belt mounting member made of a metal pipe on the left and right sides of the seat 4 separately from the left and right seat side portions 3 and 3. 29 is arranged. Each belt mounting member 29 has a generally U-shape that is twisted as a whole, and is provided at a position that does not hinder the rotation of the seat side portion 3 (that is, avoiding the rotation area of the seat side portion 3). Specifically, it is provided so as to project laterally from the rear hook-shaped member 26 to the intermediate hook-shaped member 22 on the corresponding side and behind the side plate support frame 30 on the corresponding side.

  Specifically, each belt mounting member 29 includes a hook-shaped (bar-shaped) upper coupling portion 291, a belt mounting portion 292, and a lower coupling portion 293. The upper connecting portion 291 extends from the vicinity of the connecting portion with the upper hook-shaped member 21 of the rear hook-shaped member 26 on the corresponding side while descending obliquely downward to the front and outside. The belt mounting portion 292 extends slightly obliquely rearward from the front end portion of the upper connecting portion 291 downward along the substantially vertical direction. The lower connecting portion 293 is bent inward from the lower end portion of the belt mounting portion 292 and extends in a substantially horizontal direction, and is connected to the intermediate hook-shaped member 22. That is, each belt mounting portion 292 extends upward from the corresponding intermediate hook-shaped member 22 via the lower connecting portion 293, and is provided in front of the corresponding rear hook-shaped member 26 and is provided with an arm support. It is arranged below 37. And as shown in FIG. 3, each belt mounting part 292 is arrange | positioned outside the inner surface 3a of the seat side part 3 of a corresponding side in front view.

  As shown in FIGS. 1 and 6 to 8, end portions 191 on the corresponding side of the pelvic support belt 19 made of a flexible belt-like member are attached to the belt attachment portions 292 and 292. The pelvis support belt 19 extends from one belt mounting portion 292 to the other belt mounting portion 292 so as to pass behind the seat seat 4. Each belt mounting portion 292 extends upward from the corresponding intermediate saddle member 22, so that the pelvis support belt 19 passes above the intermediate saddle member 22. For this reason, the pelvis support belt 19 is arranged on the substantially upper side of the seat 4 in a state where the pelvis support belt 19 is supported by the seat pipe support portion 20 and is developed between the intermediate saddle members 22 and 22. The reason that “substantially upper side” is used is that, for example, the lower end portion of the pelvis support belt 19 may be located below the seat sheet 4 depending on the tension of the pelvis support belt 19. In addition, since each belt mounting portion 292 is disposed in front of the corresponding rear saddle member 26 and below the arm support 37, the pelvis support belt 19 is located near the lower part of the occupant's back (near the pelvis). ). 2 to 5, the seat 4 and the pelvis support belt 19 are omitted.

  Next, the operation of the wheelchair 1 configured as described above will be described.

  FIG. 6 shows a state where the seat side portion 3 is not rotated (bounced up), and the seat side portion 3 is locked to the intermediate hook-like member 22 by the lock mechanism 36. Since the pelvis support belt 19 has both end portions 191 and 191 disposed below the arm support 37 and in front of the rear saddle-like member 26, the end portions 191 are disposed on both the left and right sides in the vicinity of the pelvis of the occupant. Is done. FIG. 6 shows a state in which the seat 4 is unfolded, and the pelvis support belt 19 is disposed substantially above the seat 4 from the rear end of the seat 4 to the rear. Specifically, an intermediate portion 192 (see FIG. 1) excluding both end portions 191 and 191 of the pelvis support belt 19 is disposed on the rear side and on the upper side of the seat 4. That is, the pelvic support belt 19 has end portions 191 disposed on both the left and right sides in the vicinity of the occupant's pelvis, and an intermediate portion 192 disposed on the rear side in the vicinity of the occupant's pelvis. It is possible to support the neighborhood with emphasis.

  Further, as shown in FIG. 3, the pelvis support belt 19 is attached to the belt attaching portions 292 and 292 located outside the inner side surface 3a of the corresponding seat side portion 3 in the front view. The pelvis support belt 19 is provided without reducing the effective width W of the seat determined by the interval between the inner side surfaces 3a.

  Then, as shown in FIG. 7, when the lock mechanism 36 is released and the seat side portion 3 is rotated, the belt mounting member 29 is separate from the seat side portion 3 and prevents the seat side portion 3 from rotating. Since it is provided in a position that does not follow, the rotation of the seat side portion 3 is not followed, and the rotation of the seat side portion 3 is not hindered. Therefore, the pelvis support belt 19 attached to the belt attachment member 29 also does not hinder or follow the rotation of the seat side portion 3, so that the passenger is drowning in the pelvis support belt 19. Even so, the movement of the seat side portion 3 is not restricted by the pelvic support belt 19 and can be easily rotated.

  When the wheelchair 1 is folded in the vehicle width direction, the arm supports 37 and 37 are pressed from the outside so as to reduce the distance between them, and the central portion of the seat 4 is lifted from below. Then, the front crossbar 6 and the rear crossbar 7 are folded, and as shown in FIG. 8, the seat pipes 8, 8 are raised while the interval in the vehicle width direction is reduced. Is raised and folded, and the wheelchair 1 is folded in the vehicle width direction. At this time, since both ends 191 and 191 of the pelvis support belt 19 are disposed on the side of the seat 4 and the intermediate portion 192 is disposed on the rear of the seat 4, the pelvis support belt 19 is raised. Will not interfere. Since the pelvis support belt 19 is stretched between the belt mounting portions 292 and 292 with a space, the pelvis support belt 19 may be shifted forward and hang on the seat sheet 4, but when folded, the pelvis support belt 19 19 is shifted rearward so as not to hang on the seat 4 and then folded.

  As described above, in the wheelchair 1, since the pelvis support belt 19 is attached to the left and right belt attachment portions 292 located outside the inner side surface 3 a of the corresponding seat side portion 3 in the front view, The pelvis support belt 19 can be provided without narrowing the effective width W (see FIG. 3) of the seat determined by the distance between the side surfaces 3a and 3a. Each belt mounting portion 292 is disposed in front of the corresponding rear saddle member 26 and disposed below the corresponding side arm support 37. For this reason, the pelvic support belt 19 in which both end portions 191 and 191 are mounted on the belt mounting portion 292 is disposed near the pelvis of the occupant and can support the vicinity of the pelvis of the occupant. Since each belt mounting member 29 including the belt mounting portion 292 is provided at a position that does not hinder the rotation of the seat side portions 3 and 3, separately from the seat side portions 3 and 3, the seat side portions 3 and 3. The pelvic support belt 19 can be provided so as not to restrict the movement of the seat, and the seat side portions 3 and 3 can be easily rotated.

  In addition, although the wheelchair 1 shall be foldable in the vehicle width direction, this invention is applicable also to the wheelchair which cannot be folded. In such a case, the intermediate part 192 of the pelvic support belt 19 is not necessarily arranged behind the seat sheet 4, and may be arranged, for example, above the rear part of the seat sheet 4.

  Further, instead of making the seat side portion 3 rotatable, the belt mounting member 29 may be provided at a position that does not prevent the seat side portion 3 from being attached or detached. As an example, in the above embodiment, instead of connecting the upper collar member 21 and the rear collar member 26 at the shaft portion 38, a locking mechanism similar to the locking mechanism 36 is used, and the upper collar member 21 and There is an example in which the rear saddle member 26 can be locked (locked) / unlocked (unlocked) at the connecting portion. In such an example, the belt mounting member 29 does not hinder attachment / detachment of the seat side portion 3 at the same position as in the above embodiment.

  Moreover, in the said embodiment, although each belt mounting part 292 was arrange | positioned outside the inner side surface 3a of the corresponding seat side part 3 in front view, it is good also as a substantially the same position as the inner side surface 3a. The “substantially the same position” includes a case slightly outside the same position and a case slightly inside. This is because depending on the tolerance of each member and the assembling accuracy, the same position as the inner side surface 3a may be shifted to the outside or the inside.

DESCRIPTION OF SYMBOLS 1 Wheelchair 3 Seat side part 3a Inner side surface 4 Seat seat (seat part)
11 Back seat (backrest)
19 Pelvic support belt 26 Rear heel member 29 Belt mounting member 37 Arm support 191 End 292 Belt mounting portion

Claims (1)

A seat where the passenger sits;
A backrest where passengers can fall;
A seat side portion provided on each of the left and right sides of the seat portion;
Left and right rear saddle-shaped members that are erected on the back of the seat portion and on which the backrest portion is mounted;
With
In each wheelchair, each seat side portion is provided with an arm support, and is configured to be rotatable or detachable with respect to the corresponding rear saddle member.
Belt mounting members that are separate from the seat side portions are provided at positions that do not hinder the rotation or detachment of the seat side portions on the left and right sides of the seat portions,
Each belt mounting member has a belt mounting portion that is disposed in front of the rear saddle member on the corresponding side and disposed below the arm support, respectively.
Each belt mounting portion is mounted with a belt made of a belt-shaped member,
Each of the belt mounting portions is located substantially at the same position as the inner side surface of the corresponding seat side portion or outside the inner side surface in a front view.

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