JP2007037802A - Foldable seat elevating/lowering type wheelchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable seat elevating/lowering type wheelchair in an easily assemblable structure, capable of coping with change in seat width or the like. <P>SOLUTION: The generally used foldable seat elevating/lowering type wheelchair is provided with: adjusting mechanism parts 25a and 35 for adjusting the width of a seat part 18; a first connection part 30 for detachably attaching the seat part 18 and support parts 16 and 17; a second connection part 23a for detachably attaching the seat part 18 and seat width stipulation parts 22, 23 and 25 for stipulating the seat width; and a third connection part 37 for detachably attaching a holding member 19 for holding an extension/contraction device 20 and a pair of X-shaped links 14 and 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a foldable seat elevating wheelchair including a seat elevating unit capable of elevating and lowering a seat.

  Conventionally, in order to reduce the burden on the user and caregiver when getting on and off the wheelchair, a wheelchair having a device for raising and lowering the seat has been proposed. In this wheelchair, the left and right side frames are connected by the front and rear folding X-shaped link devices, the seat part is connected by the lifting and lowering link devices to the left and right side frames, and between the pivot pins at each intersection of the front and rear X-shaped links A seat elevating unit including a telescopic device for raising and lowering the seat portion between the seat portion and the support member is interposed. When the telescopic device is extended, the seat rises, so that the seated person can easily move from the wheelchair to the bed or the like. Moreover, a wheelchair can be folded in the left-right direction by utilizing the front and rear folding X-shaped link devices (for example, Patent Document 1).

Utility Model Registration No. 3086541

  However, if a seat lifting unit suitable for a predetermined wheelchair is manufactured, post-processing must be performed when the seat lifting unit is attached to an existing wheelchair with a different seat width or different X-shaped links. The processing is troublesome and sometimes difficult.

  Therefore, an object of the present application is to provide a foldable seat elevating wheelchair that can be easily assembled and that can be adapted to changes in seat width and the like.

  In order to solve the above-mentioned problem, a foldable seat elevating wheelchair according to claim 1 includes a seat portion (18) connected to a machine frame (51) of the wheelchair via a pivot (26), and the seat portion. A support portion (16, 17) for supporting the seat portion from below, and a seat width defining portion (22, 23, 25) that is foldable and that defines the width of the seat portion. Elevating and lowering units (19, 20, 22, 23, 25) for moving the seat width up and down with the pivot as a fulcrum by extending and contracting; In a foldable seat elevating wheelchair comprising a pair of X-shaped links (14, 15) attached to the rear and foldable in the width direction of the seat portion, the seat portion and the support portion are detachable First connecting part to be attached 30), a second connecting part (23a) for removably attaching the seat part and the seat width defining part, a holding member (19) for holding the telescopic device, and a third part for removably attaching the X-shaped link. It has a connection part (37) and the adjustment mechanism part (25a, 35) of the said seat width prescription | regulation part, It is characterized by the above-mentioned.

  The invention according to claim 2 is the foldable seat elevating wheelchair according to claim 1, further comprising adjusting means (37, 38) for adjusting the width of the pair of X-shaped links. And

  Moreover, the invention which concerns on Claim 3 is a cover member which covers the front corner part of the said support part and a seat part in the foldable seat raising / lowering wheelchair of Claim 1 or 2 in the foldable seat raising / lowering wheelchair. (32).

  According to a fourth aspect of the present invention, in the foldable seat elevating wheelchair according to any one of the first to third aspects, the seat portion has a pair of supports (21) whose outer periphery is formed in a circular shape. ) And a seat seat (24) arranged across the pair of supports, and the second connecting portion is attached to the outer peripheral surface of the support, and the support It is characterized in that it can rotate in the radial direction on the outer peripheral surface of the body.

  According to the first and second aspects of the invention, the seat portion, the seat elevating unit, and the machine frame can be disassembled only by removing the first to third connecting portions, and the width of the seat portion and between the X-shaped links. Therefore, for example, it is possible to attach the seat elevating unit to a commercially available wheelchair with almost no post-processing.

  According to the invention of claim 3, when the rear portion of the seat portion is rotated about the pivot by the lifting unit, the cover portion covers the gap between the seat portion and the front end portion of the support portion. Even if the gap is reduced, it is possible to prevent a wheelchair user's finger or clothes from entering the gap by mistake.

  According to the fourth aspect of the present invention, when the wheelchair is folded, the outer peripheral surface of the support portion is rotated in the radial direction in accordance with the operation of the folding mechanism portion (for example, the hinge). The folding operation can be performed smoothly without the parts being twisted.

  The best mode for carrying out the invention will be described below with reference to the drawings. In the following description, the left and right sides of the wheelchair in FIG. 1 will be described as the front-rear direction of the wheelchair, and the left and right sides of the wheelchair in FIG.

<Embodiment 1>
In the wheelchair 50 according to the present embodiment, a seat elevating unit 52 for elevating the seat portion 18 is attached inside the machine casing 51. The seat lifting / lowering unit 52 includes a holding member 19, a telescopic device 20, an intermediate member 22, a wing member 23, and a hinge 25 which will be described later.

  As shown in FIGS. 1 and 2, the wheelchair 50 includes a pair of left and right side frames 1 and 2 that form part of the machine casing 51, and a main wheel 3 and casters 5 are attached to the side frames 1 and 2, respectively. It has been.

  Each side frame 1, 2 includes a front support column 6, a rear support column 7, a lower connection member 8 that connects the front and rear support columns 6, 7, an intermediate connection member 9, and an upper connection member 10. The rear column 7 is attached with a grip 11 that is bent at the top end of the rear column 7 and held by an assistant. An armrest 10 a is attached to the upper connecting member 10. Further, the intermediate connecting member 9 is connected to the lower connecting member 8 with its front tip inclined downward in front of the front support column 6, and a footrest 12 is attached to the tip.

  The left and right side frames 1 and 2 are connected below the seat portion 18 via front and rear folding X-shaped link devices, and are connected by a flexible backrest 13 at the rear column 7 in the left-right direction (width direction). It can be folded.

  The front and rear folding X-shaped link devices include X-shaped links 14 and 15, respectively. The lower ends of the X-shaped links 14 and 15 are respectively attached to the lower connecting members 8 of the side frames 1 and 2. Further, the upper ends of the front and rear X-shaped links 14 and 15 are respectively attached to cylindrical seating surface support bars 16 and 17 provided in the left-right direction of the wheelchair. Therefore, when the wheelchair is folded, the folding operation of the wheelchair is smoothly performed by rotating around the intersection of the X-shaped links 14 and 15. When the X-shaped links 14 and 15 are opened in the left-right direction of the wheelchair, the left and right seat support bars 16 and 17 stop along the intermediate connecting members 9 of the left and right side frames 1 and 2, respectively, as shown in FIG. , Is held in a seatable state. When the X-shaped links 14 and 15 are closed in the left-right direction, the left and right seat support bars 16 and 17 are lifted upward, and the side frames 1 and 2 are closed in the left-right direction.

  The seat portion 18 is connected to the machine frame 51 of the wheelchair via the pivot 26 in the front thereof. The seat part 18 includes a cylindrical seating surface seat bar 21 disposed on both the left and right sides, and a flexible seat member 24 spanned between the left and right seating surface seat bars 21. The seat member 24 functions as a seat seat of the present application.

  Below the seating surface seat bar 21, seating surface support bars 16 and 17 for supporting the seat part 18 functioning as a support part of the present application are arranged.

  The seating surface support bars 16 and 17 and the seating surface seat bar 21 are substantially L so that the front tip portions of the left and right seating surface support bars 16 and 17 and the front tip portions of the left and right seating surface seat bars 21 overlap in the vertical direction. It is connected by a letter-shaped cover part 30. Further, the seating surface seat bar 21 and the cover portion 30 are connected via a pivot 26 extending in the left-right direction of the wheelchair, and the seating surface seat bar 21 is placed on the seating surface support bars 16 and 17 as shown in FIG. The pivot 26 is pivotable in the vertical direction. Thereby, the seat part 18 is freely rotatable from the lowered position shown by the solid line in FIG. 2 to the raised position shown by the two-dot chain line. In addition, the wheelchair can be folded in the left-right direction.

  The cover portion 30 has a rod-like body 31 to be inserted into the inner diameter of the seating surface support bars 16 and 17 and a hole 32a for inserting the pivot 26, and the tip and outer side portions (corner) of the rod-like body 31 are provided. And a substantially L-shaped cover member 32 covering the portion). A seating surface seat bar 21 is attached to the cover portion 30 via a pivot 26 inserted into the hole 32a.

  Thus, since the cover part 30 covers the seating surface support bars 16 and 17 and the front end surface and the outer side surface of the seating surface seat bar 21, the seating surface seat bar 21 supports the pivot 26 by the telescopic device 20. As a result, the gap between the seating surface seat bar 21 and the seating surface support bars 16 and 17 can be reduced and the user's clothes and fingers can be prevented from being pinched.

  A seat elevating unit 52 is attached to the seat surface seat bar 21. The seat lifting / lowering unit 52 includes a wing member 23 attached to the seating surface seat bar 21, an intermediate member 22 attached to the wing member 23 via a hinge 25, and a telescopic device 20 attached to the intermediate member 22 and capable of extending and contracting in the vertical direction. And a holding member 19 for holding the telescopic device. The width of the seating surface seat bar 21 is defined by the lengths of the wing member 23, the hinge 25, and the intermediate member 22. That is, the width of the seat portion 18 is defined. Thus, the wing member 23, the hinge 25, and the intermediate member 22 function as a seat width defining portion of the present application.

  The left and right wing members 23 are connected to the left and right seating surface seat bars 21 via pipe-shaped sliding bearings 23 a formed at one end of the wing member 23, and to the intermediate member 22 via a hinge 25. Are connected. For this reason, the left and right seating surface seat bars 21 can be rotated on the intermediate member 22 together with the wing members 23, and accordingly, the seat member 24 is folded into a substantially V shape from the developed state.

  When the wheelchair is folded, the pipe-shaped slide bearing 23a attached to the end of the wing member 23 rotates in the radial direction on the outer peripheral surface of the seating surface seat bar 21, so that the wing member The folding operation is performed smoothly without being twisted.

  Further, as shown in FIG. 4, the hinge 25 and the wing member 23 are fixed to each other by a connecting member 35 with the members overlapped with each other. The coupling tool 35 is comprised by the fastening member which consists of a volt | bolt and a nut, for example, and can be attached or detached easily. In each of the members, a long hole 25a (a long hole on the wing member 23 side is not shown) extending in the left-right direction of the wheelchair is formed in a portion where they overlap each other, and a bolt shaft is inserted into the long hole 25a. And fastened with nuts. As a result, the bolt and nut are loosened, the hinge 25 or the wing member 23 is moved in the left-right direction of the wheelchair as indicated by the arrow in the figure, and the fastening position of the bolt and nut is changed along the long hole 25a. The width of the seat portion 18 can be easily changed. The long hole 25a may be only one of the wing member 23 and the hinge 25, and the other may be a round hole.

  Thereby, for example, even when the seat portion 18 and the telescopic device 20 of the present embodiment are applied to an existing wheelchair, by changing the fastening position of the bolt and nut along the long hole 25a, It becomes possible to easily adapt to the width of the seat portion 18 used in the wheelchair.

  A telescopic device 20 is provided between the seat unit 18 and the machine frame 51 of the wheelchair. By the expansion and contraction of the expansion and contraction device 20, the seat portion 18 can be turned up and down around the pivot 26 as a fulcrum. Specifically, the seat portion 18 is rotatable between two positions, a lowered position indicated by a solid line and a raised position indicated by a two-dot chain line in FIG. 2, and stopped at a desired intermediate position between the two positions. Is possible.

  The telescopic device 20 is held via the holding member 19 with respect to the machine casing 51 of the wheelchair. In other words, the holding member 19 is attached via the connector 37 at each intersection of the front and rear X-shaped links 14 and 15, and the telescopic device 20 is disposed between the seat portion 18 and the holding member 19. Yes. The coupler 37 is composed of a fastening member made of, for example, a bolt and a nut, and can be easily attached and detached.

  The holding member 19 includes a bottom plate thereof and support plates 19a and 19b rising from the front and rear ends of the bottom plate, and the support plates 19a and 19b are respectively connected to the front and rear X-shaped links 14 and 15 via connecting members 37 at the intersections. It is connected.

  The telescopic device 20 is specifically an electric actuator, and its cylinder part is pin-coupled to the bottom plate of the support member 19, and the rod part 20a is pin-coupled to the intermediate member 22 (FIG. 4). As shown in FIGS. 1 and 2, when the telescopic device 20 is in the contracted state, the seat portion 18 descends to a position that is substantially the same height as the intermediate connecting member 9, and when in the extended state, the rear end of the seat portion 18. Ascend to a position of a height that reaches the armrest 10, and the seat portion 18 is slightly inclined.

  In addition, the cover part 30 of this embodiment functions as a 1st connection part of this application, and the pipe-shaped slide bearing 23a functions as a 2nd connection part of this application. Furthermore, the connection tool 37 of this embodiment functions as the third connection part of the present application.

  Next, the operation of the wheelchair having the above configuration will be described.

  As shown in FIGS. 1 and 2, when the telescopic device 20 is contracted, the seat portion 18 rotates downward with the pivot 26 as a fulcrum, and is composed of a front seat portion 18 a and a rear seat portion 18 b of the seating surface seat bar 21. The seat portion 18 is held at the seating position by the seat portion 18 being placed on the seat support bars 16 and 17.

  In the state where the seat portion 18 is lowered, the rear seat portion 18b is inclined downward, and can be dropped into the rear seat portion 18b of the user's buttocks. The user's buttocks ride on the rear seat 18b, and a slight gap is formed between the back side of the thigh near the knee and the front seat 18a. Thereby, a user's sitting comfort improves and fatigue is reduced.

  When the telescopic device 20 is extended and the seat portion 18 is raised, the seat portion 18 rotates upward with the pivot 26 as a fulcrum, as shown by a one-dot chain line in FIGS. 1 and 2, and the rear side (rear seat portion 18b ) To be higher. At the same time, the telescopic device 20 connected to the support member 19 also tilts forward.

  Thus, when the seat part 18 rises and pushes forward in a forward tilted state, the seated user can easily get off.

  When the wheelchair is folded, the X-shaped links 14 and 15 are closed in the left-right direction. In the folded state, the seating surface support bars 16 and 17, the wing member 23 of the seat portion 18, the seating surface seat bar 21, and the like are sandwiched between the side frames 1 and 2.

<Embodiment 2>
In the wheelchair according to the second embodiment, the wheelchair 50 described in the first embodiment is provided with a link width adjusting mechanism that adjusts the width between the X-shaped links.

  As shown in FIG. 5, the link width adjusting mechanism is configured such that the length of the shaft 37 a of the connecting member 37 that connects the X-shaped links 14 and 15 and the support member 19 corresponding to the width between the X-shaped links 14 and 15. A connecting tool having a different length is selected, and a collar 38 that functions as a spacer is disposed between the X-shaped links 14 and 15 and the support member 19 on the outer periphery of the shaft 37a. The width is adjusted.

  For example, when the seat lifting / lowering unit of the present embodiment is applied to an existing wheelchair, the width between the X-shaped links 14 and 15 varies depending on each wheelchair, but as shown above, the X provided in the existing wheelchair By attaching a connector 37 and a collar 38 having a length corresponding to the width between the character-shaped links 14 and 15, it is possible to correspond to the width between the X-shaped links 14 and 15, and this embodiment can be easily applied to an existing wheelchair. The seat lifting / lowering unit 52 can be applied.

  Another link width adjusting mechanism will be described with reference to FIG.

  As shown in FIG. 6, this link width adjusting mechanism is a long hole extending in the front-rear direction of the wheelchair on the bottom plate of each L-shaped member 41, 42 of the holding member 19 composed of a pair of L-shaped members 41, 42. 41a and 42a are formed, arranged so that their bottom plates overlap each other, and fixed by a connector (not shown). The connector is composed of a fastening member made up of, for example, a bolt and a nut, and can be easily attached and detached. Note that only one of the long holes 41a and 42a and the other may be round holes.

  Then, the bolts are loosened, and the L-shaped members 41 and 42 are slid along the long holes as indicated by the arrows in the figure to adjust the width between the X-shaped links 14 and 15.

  In this case, the width between the X-shaped links 14 and 15 is adjusted by loosening the bolts, adjusting the width between the L-shaped members 41 and 42, and fixing the pair of L-shaped members 41 and 42 with the coupling again. For example, the seat elevating unit 52 of this embodiment can be easily applied to an existing wheelchair in which the width between the X-shaped links 14 and 15 is different.

  In addition, it cannot be overemphasized that the wheelchair 50 of this embodiment may be provided with both the link width adjustment mechanisms shown in the said FIG.5 and FIG.6.

<Embodiment 3>
FIG. 7 shows another embodiment when a pipe-like slide bearing is connected to a seating surface seat bar.

  As a method of connecting the sliding bearing 23a to the seating surface seat bar 21, for example, as shown in FIG. 7, the seating surface seat bar 21 has two pipe support bars A61 and B62, and both ends are connected to each other. A shaft 63 that is inserted into the inner diameter of the support bars 61 and 62 and connects the two pipe support bars A61 and B62, and the pipe-shaped sliding bearing 23a on the outer peripheral surface of the shaft 63. Is supposed to be attached. The shaft 63 is fixed to the pipe support bars A61 and B62 with screws or the like. In this manner, the sliding bearing 23a only needs to be connected to the seating surface seat bar 21 so as to be rotatable.

  In this way, the movement of the sliding bearing 23a in the axial direction is restricted by the pipe support bars 61 and 62, so that the sliding bearing 23a can be fixed at a predetermined position. Moreover, since the outer peripheral surface of the pipe support bar 21 and the outer peripheral surface of the slide bearing 23a can be designed flat, when folding the wheelchair 50, fingers, clothes, etc. are inserted between the slide bearing 23a and the seating surface seat bar 21. Can be prevented.

  Next, FIG. 8 shows another embodiment of the seat width defining portion of the present application.

  The seat width defining portion of the present embodiment includes a pair of plate-like support members 66 arranged parallel to the front-rear direction of the wheelchair 50 functioning as the wing member 23, and a hinge (not shown) at one end of the support member 66. And an intermediate member (not shown) attached thereto. The other end of the support member 66 is connected to the seating surface seat bar 21 via a pipe-like slide bearing 23b. A pair of extension members 67 extending inward of the wheelchair 50 is formed on the slide bearing 23b, and the extension member 67 and the other end side of the support member 66 are connected to each other.

  The other end side of the support member 66 and the extension member 67 are fixed by a connector 68 or the like by overlapping each other member. The coupling tool 68 is composed of, for example, a fastening member including a bolt and a nut, and can be easily attached and detached. In each member, elongated holes 69 and 70 extending in the left-right direction of the wheelchair are formed in the overlapping portions, and bolts are inserted into the elongated holes 69 and 70 and fastened with nuts. As a result, the bolts and nuts are loosened, and the support member 66 is moved in the left-right direction of the wheelchair 50 as indicated by the arrows in the figure, and the fastening positions of the bolts and nuts are changed along the long holes 69 and 70. The width of the seat portion 18 can be easily changed. The long holes 69 and 70 may be only one of the support member 66 and the extension member 67, and the other may be a round hole. Further, the support member 66 may be a pipe, a round bar, or the like. Moreover, although the two supporting members are used for the supporting member of this embodiment, one may be sufficient. In such a case, although not shown, the end of the support member 66 is attached so as to be sandwiched between the pair of extension members 67 of the slide bearing 23b.

  Next, a method for attaching the seat lifting unit to an existing wheelchair will be described using the wheelchair described in the first and second embodiments.

  First, remove the existing wheelchair seat.

  Next, the rod-shaped body 31 of the cover part 30 is inserted into the tips of the seating surface support bars 16 and 17 of the present embodiment, and the seating surface support bars 16 and 17 and the cover part 30 are fixed by screwing or the like.

  Next, the seating surface seat bar 21 of the present embodiment is pivoted into the hole 32 a formed in the cover portion 30.

  Next, a pipe-like slide bearing 23 a formed at the tip of the wing member 23 of the seat lifting unit 52 of the present embodiment is inserted into the seating surface seat bar 21 from the rear side of the seating surface seat bar 21. At that time, if the seat widths are different, the hinge 25 or the wing member 23 is moved in the left-right direction of the wheelchair, and the fastening positions of the bolts and nuts are changed along the long holes 25a to adjust to the existing seat width.

  Next, the hinge at the intersection of the X-shaped links 14, 15 of the existing wheelchair is removed.

  Next, the support member 19 that supports the telescopic device 20 of the present embodiment is attached to the intersection of the X-shaped links 14 and 15 using the removed hinge. When the support member 19 is not attached between the X-shaped links 14 and 15, as shown in FIG. 5, the fastener 37 and the collar 38 of this embodiment instead of the hinges are used to connect the X-shaped links 14 and 15. Adjust the width and install. Moreover, as shown in FIG. 6, you may make it adjust the width | variety between X-shaped links by sliding the L-shaped members 41 and 42 which comprise the supporting member 19 as shown by the arrow in FIG.

  Finally, if the seat removed from the existing wheelchair is fixed to the seating surface seat bar 21 with screws or the like, the existing wheelchair can be changed to a seat elevating wheelchair that can be easily folded.

  As described above, the foldable wheelchair 50 according to this embodiment includes the seat portion 18 connected to the machine casing 51 of the wheelchair 50 via the pivot 26, and the lower portions of the widthwise ends of the seat portion 18. The seating surface support bars 16 and 17 that support the seat portion 18, the intermediate member 22 that is foldable and defines the width of the seat portion 18, the hinge 25, and the wing member 23. A seat elevating unit 52 that elevates and lowers the intermediate member 22, the hinge 25, and the wing member 23 by elongating and contracting the telescopic device 20, and pivots the seat portion 18 up and down around the pivot 26. In a foldable wheelchair comprising a pair of X-shaped links 14, 15 attached to the front and rear of the bars 16, 17 and the machine casing 51 and foldable in the width direction of the seat portion 18. A hinge 25 for adjusting the width of the seat portion 18 and a long hole 25a formed in the wing member 23 and a connector 35 for fixing the hinge 25 and the wing member 23 to be inserted into the long hole 25a, the seat portion 18 and the Cover 30 for removably attaching seating surface support bars 16 and 17, pipe-like slide bearing 23a for removably attaching seat 18 and wing member 23, hinge 25 and intermediate member 22, and the telescopic device A holding member 19 that holds 20 and the X-shaped links 14 and 15 are detachably attached, and a coupler 37 having a collar 38 that adjusts the width of the pair of X-shaped links 14 and 15 is provided. Yes.

  According to this configuration, it is possible to disassemble the seat portion, the lifting unit, and the machine frame by simply removing the coupler, and the width of the seat portion and the width between the X-shaped links can be adjusted. It is possible to attach the seat lifting / lowering unit 52 of the present embodiment to a wheelchair that is almost without post-processing. Further, as shown in FIG. 6, the width between the X-shaped links may be adjusted by changing the width of the support member 19 in place of the connecting tool having the collar.

  The cover portion 30 includes a cover member 32 that covers at least the seat surface support bars 16 and 17 and the front corners of the seat portion 18.

  According to this configuration, the cover member 32 covers the gap between the seat portion and the front end portions of the seat support bars 16 and 17 when the rear portion of the seat portion is rotated about the pivot by the lifting unit. Even if the gap is reduced by movement, it is possible to prevent a wheelchair user from accidentally getting a finger or clothes into the gap.

  The seat portion 18 includes a pair of seating surface seat bars 21 whose outer periphery is formed in a circular shape, and a seat seat 24 arranged so as to be stretched over the pair of seating surface seat bars 21. The pipe-shaped sliding bearing 23a is attached to the outer peripheral surface of the seating surface seat bar 21, and is rotatable on the outer peripheral surface of the seating surface seat bar 21 in the radial direction.

  According to this configuration, when the wheelchair is folded, the outer peripheral surface of the seating surface seat bar 21 is rotated in the radial direction in accordance with the operation of the hinge 25, so that the hinge 25 is not twisted. The folding operation can be performed smoothly.

  In addition, this invention is not limited to the said embodiment, It can implement with a various form.

It is a front view at the time of the seat part lowering of the wheelchair which concerns on Embodiment 1 of this invention. It is a left view of the wheelchair shown in FIG. It is a figure which shows the attachment state of a seat raising / lowering unit. It is a figure which shows the mechanism which adjusts the width | variety of a seat part. It is a figure which shows the mechanism which adjusts the width | variety of the X-shaped link of the wheelchair which concerns on Embodiment 2 of this invention. The mechanism which adjusts the width | variety of another X-shaped link is shown, Fig.6 (a) is a front view, FIG.6 (b) is a bottom view. It is a figure which shows the other Example at the time of connecting a pipe-shaped slide bearing to a seat surface seat bar. It is a figure which shows the other Example of a seat width prescription | regulation part.

Explanation of symbols

14, 15 X-shaped link 16, 17 Seat surface support bar 18 Seat part 20 Telescopic device 22 Intermediate member 23 Wing member 23a Pipe-shaped slide bearing 25 Hinge 25a Long hole 26 Pivot 30 Cover part 37 Connection tool 51 Machine frame 52 Seat lifting unit

Claims (4)

A seat portion coupled to a wheelchair frame via a pivot; a support portion for supporting the seat portion from below; and a seat width defining portion that is foldable and defines the width of the seat portion. A seat elevating unit configured to elevate and lower the seat width defining portion by extension and contraction of the extension device and turn the seat portion up and down around the pivot, and attached to the front and rear of the support portion and the machine frame; In a foldable seat lifting wheelchair comprising a pair of X-shaped links foldable in the width direction of the seat portion,
A first connecting part for detachably attaching the seat part and the support part;
A second connecting part for detachably attaching the seat part and the seat width defining part;
A holding member for holding the telescopic device and a third connecting part for detachably attaching the X-shaped link;
An adjustment mechanism portion of the seat width defining portion;
A foldable seat raising and lowering wheelchair characterized by comprising:   The seat-lifting wheelchair according to claim 1, further comprising adjusting means for adjusting the width of the pair of X-shaped links. The first connecting part is
The foldable seat elevating wheelchair according to claim 1 or 2, further comprising a cover member that covers at least the support portion and a front corner of the seat portion. The seat portion is configured to include a pair of supports whose outer periphery is formed in a circular shape, and a seat seat that is arranged so as to be stretched over the pair of supports.
The folding according to any one of claims 1 to 3, wherein the second connecting portion is attached to an outer peripheral surface of the support body and is rotatable in a radial direction on the outer peripheral surface of the support body. Possible seat lift wheelchair.

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