JP2015080658A - Fitting structure for handrail for wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting structure capable of suppressing backlash of a handrail in the handrail fitted to a welfare vehicle to be gripped by an occupant of a wheelchair mounted on the welfare vehicle.SOLUTION: A handrail fitting part 4 is provided to right and left side parts of a vehicle 1 respectively for fitting a pipe-shaped handrail 5 to the vehicle 1. A spacer 8 composed of a base part 81 and a guide part 82 is installed at the handrail fitting part 4. The spacer 8 has flexibility. The outer diameter of the base part 81 is slightly larger than the inner diameter of the handrail 5, and the outer diameter on the tip side of the guide part 82 is smaller than the inner diameter of the handrail 5. When the handrail 5 is pushed in from the guide part 82 side of the spacer 8, the base part 81 is bent so that its diameter is elastically reduced, and the handrail 5 is fitted into the spacer 8. The handrail 5 is fitted to the vehicle 1 in a state that its inner periphery and the outer periphery of the base part 81 are in pressure contact with each other.

Description

  The present invention relates to a mounting structure for a handrail for a wheelchair provided in a vehicle for a rider of a wheelchair mounted on a welfare vehicle to hold.

  2. Description of the Related Art Conventionally, in a wagon type or one box type vehicle, for example, a welfare vehicle is known in which a wheelchair is carried on a vehicle while the passenger is seated on the wheelchair. When a wheelchair is mounted and transported in this way, the wheelchair passenger may feel anxiety due to running vibration or vibration, so the wheelchair passenger must reduce the anxiety and ensure the stability of the body. It is required to provide a vehicle with a handrail that can be gripped.

  By the way, in such a welfare vehicle, by folding the rear seat arranged in the passenger compartment, the space where the rear seat is normally arranged is used as a wheelchair mounting space, and the wheelchair can be mounted in this wheelchair mounting space. What is becoming common is. In the case of a welfare vehicle that secures a wheelchair mounting space in this manner, if the handrail is fixed to the vehicle body, the handrail is seated on the rear seat in a state where the rear seat is arranged and used without mounting the wheelchair. It could be a hindrance for passengers to get on and off. Therefore, for example, as shown in Patent Document 1, the position of the handrail can be switched between when the wheelchair is mounted and when it is not mounted (that is, when the rear seat is arranged and used). Has been proposed.

  In this proposal, a structure in which a lower end portion of a handrail movable pipe member is inserted from above into a fixed pipe member fixed to a vehicle body and extending upward is screwed.

  Specifically, the movable pipe member is fixed to the fixed pipe member by screwing a cylindrical member with a female thread portion, which is externally attached to the lower end portion of the movable pipe member, to a male screw portion on the outer periphery of the upper end portion of the fixed pipe member. Fixed.

  Further, a pin member extending in the radial direction in the pipe is fixed to the upper end portion of the fixed pipe member, while two engagement grooves intersecting in a substantially cross shape are formed on the lower end of the movable pipe member. . By rotating the movable pipe member and selectively engaging the two engaging grooves with the pin member of the fixed pipe member, the position of the movable pipe member is changed to the handrail use position when the wheelchair is mounted. The handrail can be switched to a retreat position when the wheelchair is not mounted.

JP-A-2005-192740 (particularly paragraphs 0048 to 0049, 0054, FIG. 10)

  However, in the thing of the said patent document 1, since the cylindrical member extrapolated by the movable pipe member can move now to the axial direction of a movable pipe member, the outer periphery of a cylindrical member and the outer periphery of a movable pipe member There will be a little gap between them. Further, since the lower end of the movable pipe is inserted into the fixed pipe member, there is a gap between them. For this reason, when the handrail is shaken by vibration of the vehicle traveling, etc., the screwing of the male screw part and the female screw part is loosened, and the gap between the cylindrical member and the movable pipe member, and the movable pipe member and the fixed pipe member. There is a risk of handrailing.

  The present invention has been made in view of such a point, and an object of the present invention is to provide a handrail attachment structure for a wheelchair that can prevent rattling of the handrail attached to the vehicle body in a welfare vehicle equipped with a wheelchair. There is.

  In order to achieve the above object, in the present invention, a spacer is attached to the vehicle side, and the lower end portion of the handrail is fitted to the spacer.

  Specifically, the first invention presupposes a wheelchair handrail mounting structure for mounting a wheelchair handrail gripped by a wheelchair passenger mounted on a welfare vehicle to the vehicle body. The mounting structure includes a support shaft provided at a handrail mounting portion of the vehicle body, a cylindrical fitting portion formed at one end of the handrail and fitted to the support shaft, the support shaft and the handrail. A cylindrical spacer provided between the fitting portion and the spacer, and the spacer is formed such that its outer diameter is elastically reduced by an external force, and the fitting portion of the handrail is The elastic member is elastically fitted to the support shaft through the spacer.

  According to a second aspect, in the first aspect, the spacer includes a cylindrical base portion and a tapered guide portion that guides the fitting of the fitting portion of the handrail with respect to the base portion. And

  According to a third invention, in the first or second invention, the spacer includes a slit extending in an axial direction so that an outer diameter thereof is elastically reduced by an external force.

  In a fourth invention, in any one of the first to third inventions, the support shaft comprises a bolt fixed to the handrail mounting portion of the vehicle body, and a cylindrical collar is fitted to the bolt. The spacer is fitted to the collar.

  According to a fifth invention, in the fourth invention quoting the second invention, the guide portion of the spacer has an inner diameter larger than an outer diameter of the collar, and a gap is provided between the guide portion and the collar. Is formed.

  According to a sixth aspect, in the fourth or fifth aspect, the spacer is fitted to the support shaft with a play that allows movement in the axial direction.

  According to a seventh invention, in any one of the fourth to sixth inventions, the spacer is made of resin, and the collar is made of metal.

  As described above, according to the first invention, since the handrail is elastically fitted to the support shaft via the spacer whose outer diameter is elastically reduced, the passenger of the wheelchair holds the handrail. In this state, even if the vehicle is subjected to vibrations on the handrail, the shakiness of the handrail is reduced and a sense of stability or security can be given to the wheelchair passenger.

  According to 2nd invention, since the spacer is provided with the tapered guide part, a handrail can be fitted smoothly and assembly | attachment property improves.

  According to the third invention, the spacer can be elastically reduced in diameter by the slit provided in the spacer.

  According to the fourth invention, the outer peripheral surface of the collar is used as a sliding surface, and the spacer can be smoothly expanded and contracted in diameter, which is advantageous for elastic support of the handrail.

  According to the fifth aspect of the present invention, the spacer base portion can be fitted to the support shaft without rattling, while the guide portion can eliminate frictional resistance with the collar, and the spacer can be smoothly expanded and contracted. It becomes advantageous to the diameter.

  According to the sixth invention, there is a margin in the axial direction of the spacer, and the spacer can be in a state of having axial play, which is advantageous for smooth expansion and contraction of the spacer.

  According to the seventh invention, the spacer can suppress deformation in the axial direction while having flexibility in the radial direction.

In embodiment of this invention, it is the rear part top view of the welfare vehicle which has arrange | positioned the rear seat to the use position. In embodiment of this invention, it is a rear part top view of a welfare vehicle when folding a rear seat and mounting a wheelchair. It is a disassembled perspective view which shows the attachment structure of the handrail in embodiment of this invention. It is the B section enlarged view of FIG. It is the sectional view on the AA line of FIG. FIG. 6 is an enlarged perspective view of a handrail switching mechanism K. It is sectional drawing which shows the state of switching operation in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its application, or its use.

  In the following description, the state where the handrail is held at the position of FIG. 1 is referred to as a first state, and the state where the handrail is held at the position of FIG. 2 is referred to as a second state.

(Embodiment 1)
1 and 2, V is a welfare vehicle according to an embodiment of the present invention, and a vehicle body 1 of the welfare vehicle V is provided with a rear seat 2 that can be folded forward in the vehicle interior. As shown in FIG. 1, the rear seat 2 disposed at the rear portion of the vehicle body 1 includes a seat back 21 constituting a backrest portion, a seat cushion 22 constituting a seating portion, and a lower end portion of the seat back 21 as a seat cushion 22. The support member 23 is connected to the rear end portion of the seat back 22 and supports the seat back 21 so that the seat back 21 can be moved forward. The headrest 24 is detachably attached to the upper end portion of the seat back 21. .

  A pair of leg members 25 connected to the seat cushion 22 are attached to recesses 31 formed on both sides in the vehicle left-right direction of the floor panel 3 that is a part of the vehicle body 1 so as to be pivotable forward. ing.

  Further, handrail attachment portions 4 (see FIG. 3) are provided on both left and right sides of the floor panel 3 on both sides of the seat cushion 22, and pipe-like handrails 5 are erected on the handrail attachment portions 4. And the cover member 11 is provided so that the handrail attachment part 4 may be covered.

  The handrail 5 includes a grip 51. In the state where the rear seat 2 is disposed at the use position as shown in FIG. 1, the grip 51 is positioned substantially parallel to the side surface of the rear seat 2 when viewed from above. It is held in one state (the retracted state of the handrail 5).

  As shown in FIG. 2, although details are omitted, when the rear seat 2 folded forward so that the seat back 21 is tilted forward and substantially parallel to the seat cushion 22 is lifted forward, the rear seat 2 is attached to the leg member 25. Centering on the lower end, the support member 23 is rotated forward to a position where the support member 23 is on the upper side, and is held behind the driver seat and the passenger seat (not shown). Thus, the wheelchair mounting space S in which the wheelchair 6 can be mounted is formed in the space where the rear seat 2 is disposed.

  At this time, the handrail 5 is rotated forward substantially horizontally via a switching mechanism K described later. Then, the gripping part 51 of the handrail 5 is positioned so that the passenger P of the wheelchair 6 can easily grip, that is, the gripping parts 51 on both sides viewed from above as shown in FIG. It is held in two states (use state of handrail 5).

  As shown in FIG. 3, the handrail attachment portion 4 includes a substantially trapezoidal pedestal 41 attached to the left and right side portions of the floor panel 3, and a holding pipe 42 erected on the upper surface 41 a of the pedestal 41 and integrally welded. And a positioning member 43 that is integrally welded to the upper end of the holding pipe 42 and constitutes a part of the switching mechanism K described later. By attaching the lower portion of the pedestal 41 to the floor panel 3 with the mounting bolts 44 and 45, the handrail mounting portion 4 is installed and fixed to the vehicle body 1 of the welfare vehicle V.

  Inside the holding pipe 42, there are a flexible spacer 8, a cylindrical collar 9 inserted into the spacer 8, and a bolt 10 as a support shaft inserted into the collar 9. Be contained. The collar 9 accommodated in the holding pipe 42 is fastened and fixed to the upper surface 41 a of the pedestal 41 of the handrail mounting portion 4 by the bolt 10 and the nut 12.

  The handrail mounting portion 4 is covered with a cover member 11 formed so as to cover the entire base 41. A cutout portion 11b is provided on the upper surface 11a of the cover member 11, and the upper portion of the holding pipe 42 and the positioning member 43 are exposed from the cutout portion 11b in a state where the cover member 11 is put on the base 41. .

  The handrail 5 is made of a pipe material having a diameter smaller than that of the holding pipe 42, and extends vertically and has a lower pipe portion 52 inserted into the holding pipe 42. The first grip 51 a that extends gently diagonally upward) and the grip 51 that includes the second grip 51 b that extends downward from the tip of the first grip 51 a are integrally provided. Further, a cap 54 for protecting the edge is attached to the tip of the second grip 51b.

  A switching member 13 constituting a part of the switching mechanism K for switching the position of the gripping part 51 is integrally welded to the outer periphery in the vicinity of the lower part of the vertical pipe part 52. In the vertical pipe portion 52, the lower side of the portion where the switching member 13 is welded constitutes an insertion portion (fitting portion) 52 a to be inserted into the holding pipe 42.

  Although details will be described later, the handrail 5 is attached to the handrail mounting portion 4 provided in the vehicle body 1 by being inserted into the holding pipe 42 and fitted into the spacer 8 accommodated in the holding pipe 42. The grip 51 is positioned and held in the first state or the second state by the switching member 13, the positioning bolt 15, and the positioning nut 16 (see FIG. 5). FIG. 3 shows a case where the second state is maintained.

  Next, the structure of the attachment part of the handrail 5 is demonstrated based on FIG.4 and FIG.5.

  As shown in FIG. 4, the spacer 8 is made of a resin having flexibility, and has a cylindrical base 81 and a truncated cone shape that is formed integrally with the base 81 and gradually decreases in diameter toward the tip. The guide part 82 is provided. As shown by a two-dot chain line in FIG. 5, the outer diameter of the base 81 of the spacer 8 is slightly larger than the inner diameter of the insertion portion 52 a of the handrail 5 and smaller than the inner diameter of the holding pipe 42. On the other hand, the outer diameter on the distal end side of the guide part 82 is formed smaller than the inner diameter of the insertion part 52a. A slit 83 cut from the upper end to the lower end is formed on the peripheral side surface of the spacer 8. An insertion hole 84 is formed through the shaft center of the spacer 8.

  As shown in FIG. 5, the insertion hole 84 has a small-diameter portion 84 a that can contact the collar 9 on the lower side at a substantially intermediate position in the axial direction of the spacer 8, that is, near the connection portion between the base portion 81 and the guide portion 82. The upper portion is a large-diameter portion 84b that is larger in diameter than the small-diameter portion 84a and does not contact the collar 9. The upper side may be the small-diameter portion 84a and the lower side may be the large-diameter portion 84b, or the small-diameter portion 84a may be provided above and below the large-diameter portion 84b, but in order to ensure the stability of the spacer 8, It is preferable to provide the small diameter portion 84a at least on the lower side.

  As shown in FIGS. 4 and 5, a metal-made hollow cylindrical collar 9 is inserted into the insertion hole 84 of the spacer 8. As shown in FIG. 5, when the collar 9 is inserted through the spacer 8, the outer peripheral surface of the collar 9 abuts against the inner peripheral surface of the small diameter portion 84a, so that rattling of the spacer 8 is suppressed. Further, since the collar 9 is formed longer than the spacer 8 in the axial direction, the upper end of the collar 9 protrudes slightly from the upper end of the spacer-8.

  On the other hand, a mounting hole 41b is provided through the upper surface 41a of the pedestal 41 of the handrail mounting portion 4 provided in the vehicle body 1 so as to be coaxial with the holding pipe 42 erected on the upper surface 41a. Then, in a state where the spacer 8 is disposed inside the holding pipe 42 and the collar 9 is inserted through the insertion hole 84, the bolt 10 is inserted into the collar 9 and the mounting hole 41 b from the upper side and tightened with the nut 12. At this time, since the upper end of the collar 9 protrudes from the upper end of the spacer 8, the screw head 10a of the bolt 10 does not contact the upper end of the spacer 8, and there is a little gap between them (the spacer 8 It is in a state with play in the axial direction).

  Thereafter, the insertion portion 52 a of the handrail 5 is inserted into the holding pipe 42. Then, as shown by a two-dot chain line in FIG. 5, the outer diameter of the base portion 81 of the spacer 8 is formed to be slightly larger than the inner diameter of the insertion portion 52a, so that the lower end portion 52b of the insertion portion 52a is guided with the base portion 81. It contacts the boundary with the part 82. When the handrail 5 is further pushed in from this state, a force inward in the radial direction (arrow direction shown in FIG. 5) is applied to the spacer 8, and the width of the slit 83 of the spacer 8 is reduced, that is, the spacer 8 is contracted. It bends elastically so as to have a diameter. Due to the reduced diameter of the spacer 8, the insertion portion 52 a of the handrail 5 can be fitted to the base portion 81 of the spacer 8. And if the insertion part 52a is further pushed down, the lower end 52b of the insertion part 52a will contact | abut to the upper surface 41a of the base 41. FIG. At this time, the outer periphery of the base 81 is in pressure contact with the inner periphery of the insertion portion 52a (handrail 5) by the elasticity of the spacer-8.

  Therefore, according to this attachment structure, the shakiness of the handrail 5 can be suppressed and attached to the vehicle body 1. Moreover, since the handrail 5 can be attached only by fitting the insertion part 52a to the spacer 8 previously fixed to the vehicle body 1, the workability is excellent. Further, since the upper end of the spacer 8 does not come into contact with the bolt 10 and the large diameter portion 84b of the spacer 8 is thin, it is easily elastically bent in the radial direction. On the other hand, since the collar 9 is inserted through the spacer 8, deformation in the axial direction can be suppressed.

  Further, the outer diameter of the guide portion 82 of the spacer 8 is the smallest at the tip end side, and is formed so as to smoothly expand in a tapered shape toward the base portion 81 side, and the handrail 5 has the guide portion 82. Since it is inserted from the distal end side, the resistance is low and it is guided smoothly to the base 81 side and is easy to assemble.

  Next, the positioning operation and switching operation of the handrail 5 will be described with reference to FIGS. 5 to 7 show the state of holding at the position of the second state, the same applies to the operation when holding at the position of the first state. FIG. 6 shows the switching mechanism K located on the left side of the vehicle as viewed from the front side of the vehicle, and shows the state in which the cover member 11 is omitted for easy understanding.

  As shown in FIGS. 5 to 7, the switching mechanism K is integrated with the positioning member 43 integrally welded to the upper end of the holding pipe 42 and the upper portion of the insertion portion 52 a at the lower portion of the handrail 5 (vertical pipe portion 52). The switching member 13 is welded, and the positioning bolt 15 and the positioning nut 16 are used for positioning and fixing.

  The positioning member 43 includes a circular ring portion 43a having an opening at the center, and an extending portion 43b formed by extending downward from one end of the ring portion 43a and then bending downward. A bolt hole 43c for inserting the positioning bolt 15 is provided in the extending portion 43b, and a positioning nut 16 screwed to the positioning bolt 15 is integrally fixed to the inner surface of the extending portion 43b by welding or the like. ing.

  The switching member 13 has a flat surface portion 13a having an open center, and a vertical surface portion 13b formed by bending downward from a peripheral outer edge of the flat surface portion 13a, and is disposed so as to cover the positioning member 43 from above. . The vertical surface portion 13b includes a first notch 13c for holding the handrail 5 at the position of the first state and a second notch 13d for holding the handrail 5 at the position of the second state. It is provided in a state of being cut out in a bottomed shape from the top to the top.

  As shown in FIG. 6, in the handrail 5, in the second state, the positioning bolt 15 is inserted into the second notch 13 d of the switching member 13 and the bolt hole 43 c of the positioning member 43 and screwed to the positioning nut 16. It is fixed by positioning. That is, since the switching member 13 is welded to the handrail 5 (vertical pipe portion 52), the vertical pipe portion 52 is fixed and held at the position of the second state without rotating.

  Next, the case of switching from the second state to the first state will be described.

  First, the positioning bolt 15 is loosened to release the fastening of the positioning bolt 15 to the switching member 13 so that the vertical pipe portion 52 can be freely moved upward. In this state, as indicated by a two-dot chain line in FIGS. 6 and 7, the vertical pipe portion 52 is lifted slightly upward until the second notch 13 d of the switching member 13 is completely removed from the positioning bolt 15. If it does so, it will be in the state which can rotate the vertical pipe part 52, without the 2nd notch 13d interfering with the positioning bolt 15. FIG. And in this state, the vertical pipe part 52 is rotated to the arrow direction shown in FIG. Then, the vertical pipe portion 52 rotates substantially horizontally until the first notch 13c comes to the position of the positioning bolt 15. When the first notch 13c comes to the position of the positioning bolt 15, the vertical pipe portion 52 is pushed down to the position based on the vertical pipe portion 52, so that the vertical notch 13c moves downward and the first notch 13c is moved to the positioning bolt 15. Engage with. Since the first notch 13c is provided at a position where the handrail 5 is held in the first state, the position of the switching member 13 welded to the vertical pipe portion 52 is fixed by tightening the positioning bolt 15 at this position. Thus, the vertical pipe portion 52, that is, the handrail 5 is fixed and held at the position of the first state.

  As described above, according to the mounting structure of the present invention, the handrail 5 can be attached to and detached from the vehicle body 1 by inserting / removing the handrail 5 into / from the spacer 8, so that it can be easily attached and the handrail 5 can be removed or rotated. It is possible to easily perform the operation of moving. In addition, since the handrail 5 and the spacer 8 are in pressure contact with the handrail 5 attached, rattling of the handrail 5 can be reliably prevented.

(Other embodiments)
In the present embodiment, the vertical pipe portion 52 is rotated by the switching mechanism K. However, the present invention is not limited to this structure, and may have another structure, for example, electric control. Moreover, it is good also as a structure where the switching member 13 rotates. Further, in this embodiment, the handrail attachment portion 4 is provided on both sides in the vehicle left-right direction, but is not limited to this position, and may be provided, for example, on the side surface of the vehicle body. Further, the handrail 5 is erected on both sides in the vehicle left-right direction, but may be provided so as to extend from the side surface of the vehicle body toward the vehicle interior side.

  Moreover, the guide part 82 of the spacer 8 is not restricted to the shape of this embodiment, For example, the shape where the inclined surface of the guide part 82 curved may be sufficient.

  Further, the slit 83 is provided so that the spacer 8 is easily elastically reduced in diameter. However, the present invention is not limited to this, and the spacer 8 can be elastically contracted and expanded when the handrail 5 is inserted. Thus, it is sufficient that the vertical pipe portion 52 of the handrail 5 is elastically contacted to prevent rattling and the vertical pipe portion 52 can be pulled upward by a simple operation. For example, instead of the slit 83 penetrating in the vertical direction, a slit may be provided only in the lower half, or instead of a slit penetrating in the radial direction, a groove may be provided to make the wall thin. Moreover, when providing such a slit and groove | channel of only a lower half, you may make it provide in multiple strips instead of one strip.

  Further, the support shaft is not limited to the bolt 10, and for example, a boss or a pin that engages with the collar 9 may be provided upright on the handrail mounting portion 4.

  INDUSTRIAL APPLICABILITY The present invention is suitable for a handrail attachment structure when a handrail is provided on a welfare vehicle so as to be removable or rotatable.

V welfare vehicle 1 car body 2 rear seat 3 floor panel 4 handrail attachment portion 41 base 41a upper surface 41b attachment hole 42 holding pipe 43 positioning member 5 handrail 51 gripping portion 52 vertical pipe portion 52a insertion portion (fitting portion)
52b Lower end 6 Wheelchair 8 Spacer 81 Base part 82 Guide part 83 Slit 84 Insertion hole 84a Small diameter part 84b Large diameter part 9 Collar 10 Bolt (support shaft)
10a Screw head 11 Cover member 12 Nut 13 Switching member K Switching mechanism

Claims (7)

In the mounting structure of the handrail for a wheelchair of a vehicle in which a handrail for a wheelchair gripped by a passenger of a wheelchair mounted on a welfare vehicle is attached to the vehicle body,
A support shaft provided at the handrail mounting portion of the vehicle body,
A cylindrical fitting portion formed at one end of the handrail and fitted to the support shaft;
A cylindrical spacer provided between the support shaft and the fitting portion of the handrail;
The spacer is formed such that its outer diameter is elastically reduced by an external force,
An attachment structure for a handrail for a wheelchair of a vehicle, wherein the fitting portion of the handrail is elastically fitted to the support shaft via the spacer. In claim 1,
The spacer has a cylindrical base,
An attachment structure for a handrail for a wheelchair of a vehicle, comprising: a tapered guide portion that guides fitting of the fitting portion of the handrail to the base portion. In claim 1 or 2,
A mounting structure for a handrail for a wheelchair of a vehicle, wherein the spacer includes a slit extending in an axial direction so that an outer diameter thereof is elastically reduced by an external force. In any one of Claims 1 thru | or 3,
The support shaft comprises a bolt fixed to the handrail mounting portion of the vehicle body,
A cylindrical collar is fitted to the bolt,
A mounting structure for a handrail for a wheelchair of a vehicle, wherein the spacer is fitted to the collar. In claim 4, which cites claim 2,
The structure for mounting a handrail for a wheelchair of a vehicle, wherein the guide portion of the spacer has an inner diameter larger than an outer diameter of the collar, and a gap is formed between the guide portion and the collar. In claim 4 or 5,
An attachment structure for a handrail for a wheelchair of a vehicle, wherein the spacer is fitted to the support shaft with a play that allows movement in an axial direction. In any one of claims 4 to 6,
The spacer is made of resin,
A mounting structure for a handrail for a wheelchair of a vehicle, wherein the collar is made of metal.

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