JP3993996B2 - wheelchair - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a wheelchair with adjustable width.
[0002]
[Prior art]
Conventionally, no adjustable wheelchair has been provided.
[0003]
[Problems to be solved by the invention]
However, as shown in FIG. 10, in order for the user to move the wheelchair (9) without relying on the assistant, the main wheel (91) or the hand rim attached to the main wheel is grasped by hand and turned. If the width of the wheelchair (9) is not adjusted according to the body shape, when the person in the wheelchair (9) turns the wheel (91) by hand, the width of the wheel (91) is too wide or too narrow. There was a problem that the hand could not be placed at a position where the wheel (91) was easy to turn.
[0004]
[Means for Solving the Problems]
As a means for solving the above conventional problems, the present invention has a structure in which left and right side frames (3, 3) are connected by one or more X frames (11, 12). , 12) are coupled to each other at the center so as to be pivotable, and comprise a pair of pivot rods (11A, 11A, 12A, 12A) whose lower ends are pivotally attached to the lower portions of the left and right side frames. , 11A, 12A, 12A) lower portion is attached to said side frame lower via a shaft (26), the lower 該Sayu side frame, a plurality are arranged vertically shaft hole (13A, 13B , 13C) And selecting one of the plurality of shaft holes (13A, 13B, 13C ) corresponding to the desired width of the wheelchair (1) to select the shaft holes (13A, 13B, 13C). ) to by the Rukoto to support the shaft (26), the upper end portion of the X frame (11, 12) without changing the vertical position relative to the left the right frame (3,3), and wherein X there is provided a wheelchair (1) which is adjustable to the width of the vehicle chair without (1) changing the length of the frame (11, 12).
A link arm (30, 30) is passed between the upper part of at least one pair of the pivot rods (12A, 12A) and the left and right side frames (3, 3), and the link arm (30 30) It is desirable that the mounting position can be adjusted up and down on the left and right side frames.
Further, the link arm (30, 30) is attached via a shaft (32, 32) on the left and right side frame (3, 3) side, and the shaft (32, 32) is attached to the side frame (3, 3). It is desirable to be supported by one of a plurality of shaft holes (14A, 14B, 14C) provided on the side and arranged vertically.
[0005]
[Action]
In the present invention, the left and right side frames (3, 3) of the wheelchair (1) are connected by a pair of front and rear X frames (11, 12), and the rotary rods (11A, 11A, 12A, By rotating 12A) around the center C, the width of the X frame (11, 12) , that is , the width between the left and right side frames (3, 3) can be adjusted as shown in FIG. In this case the X-frame (11, 12) is also changed Tatehaba but該回Do杆(11A, 11A, 12A, 12A) left right frame under helmet with the position of the lower end to a desired width of the wheelchair since correspondingly are to be vertically adjusted, Tatehaba can be connected to left and right frame correspondingly be changed (3,3), vertical position of the upper end portion of the pivoting frame, i.e. seat The vertical position does not change.
[0006]
Specifically, the lower end of the rotating rod (11A, 11A, 12A, 12A) is attached to the lower part of the side frame (3, 3) via a shaft (26), and the shaft (26) the side frame (3,3) a plurality of shaft holes are arranged vertically provided in the lower (13A, 13B, @ 13 C) but is in the range one to Ru is supported within the,該回Do杆(11A, 11A, 12A, 12A) the lower end a plurality of shaft holes (13A, 13B, and thus pivotally mounted to inserting the shaft (26) in accordance with the axial bore to select one of the 13C) The width between the side frames (3, 3), that is, the width of the wheelchair (1) can be adjusted stepwise without changing the height of the seat .
[0007]
A link arm (30, 30) is passed between at least a pair of the center of the pivot rod (11A, 11A, 12A, 12A) and the left and right side frames (3, 3). (30, 30) If the mounting position is adjustable on the side frame (3, 3) side, the mounting position of the link arm (30) can be adjusted according to the width adjustment between the side frames (3, 3). Adjustable, can reinforce the X frame (11, 12).
[0008]
The link arm (30, 30) is attached on the side frame side via a shaft (32, 32), and the shaft (32) is provided on the side frame side and arranged in a vertical direction. When one of the holes (14A, 14B, 14C) is selected and supported rotatably on the shaft hole, the attachment position of the link arm (30, 30) can be adjusted stepwise.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 to FIG. 8, the main body (2) of the wheelchair (1) shown in FIGS. 1 to 3 comprises a pair of left and right side frames (3, 3). 3,3) consists of a seat beam (4), front and rear limbs (5,6), armrest (7), back column (8), footrest support beam (9) and lower beam (10). The side frames (3, 3) are connected by a pair of front and rear X frames (11, 12).
[0010]
A pair of main wheels (15, 15) is attached to the rear leg column (6, 6) on the side of the main body (2), and an auxiliary wheel (47) is attached to the front leg column (5, 5). It has been. Further, a seat cloth (19) is passed between a pair of upper ridges (17, 17) at the upper end of the X frame (11, 12) between the seat beam portions (4, 4), and the side frames (3, 3 ) Between the back pillars (8, 8), and a pair of left and right footrests (46) are attached to the footrest support beam (9) so that they can be flipped up horizontally. ing.
Further, an armrest pad (23) is attached to the upper surface of the armrest portion (7), and an upper end of the back column portion (8) is bent and a handle (45) is attached.
[0011]
As shown in FIGS. 3 and 4, the seat cloth (19, 19) and the back cloth (21, 21) are bonded to each other by a hook-and-loop fastener (20, 22) so that two cloths can be divided at the center. Become. The fabric is preferably made of a strong synthetic fiber such as polyamide or polyester.
[0012]
As shown in FIG. 5, the pair of front and rear X frames (11, 12) connecting the left and right side frames (3, 3) has a pair of pivot rods (11A, 11A) and a pair of pivot rods (12A). , 12A), and the pair of rotary rods (11A, 11A, 12A, 12A) are coupled to each other with the center C as a fulcrum, and the upper ends of the pair of X frames (11, 12). A pair of cylindrical upper ridges (17, 17) are inserted and welded at the lower end to a pair of cylindrical lower ridges (18, 18).
[0013]
Further, as shown in FIG. 6, a pair of front and rear prismatic lower rod attachment portions (13, 13) are welded to the lower beam (10) at the lower side of the side frame (3), and the lower rod attachment portion (13 , 13) is provided with a plurality (three) of shaft holes (13A, 13B, 13C) arranged vertically. Further, a retaining shaft hole (13D) is provided on one side of the lower rod mounting portion (13, 13) so as to penetrate from the upper surface to the lower surface. Further, a pair of front and rear saddle supports (16, 16) are attached to the seat beam portion (4) of the side frame (3).
[0014]
Further, as shown in FIG. 7, a prismatic link arm mounting portion (14) is welded to the rear leg column portion (6), and screw holes (14A, 14B) which are shaft holes are connected to the link arm mounting portion (14). , 14C) are provided in a suitable position corresponding to the rotation of the rotary rods (12A, 12A) in a plurality (three) arranged vertically and horizontally.
[0015]
In order to connect the side frames (3, 3) by the X frame (11, 12), the cylindrical lower rod (18) of the X frame (11, 12) is connected to the lower rod mounting portion (13, 13). 13) Any one of the shaft holes (13A, 13B, 13C), for example, align with the shaft hole (13A), and connect the pivot shaft (26) as the shaft to the shaft hole (13A, 13A) and the cylindrical lower rod (18) It is inserted inside and supported. At this time, the upper rod (17) of the X frame (11, 12) is supported by the rod receiver (16, 16) of the seat beam portion (4).
[0016]
When the X frame (11, 12) is attached to the left and right side frames (3, 3) in this way, the retaining shaft (27) is attached to the retaining shaft hole of the lower heel mounting portion (13) as shown in FIG. (13D) and the retaining shaft hole (26A) provided in the pivot shaft (26). One end of the pivot (26) is bent to form a grip portion, and the excessive insertion of the pivot (26) is restricted to facilitate alignment of the retaining shaft hole (26A).
[0017]
When the left and right side frames (3, 3) are fixed by the X frames (11, 12) in this way, the link arm (30, 30) shown in FIG. 7 is further moved upward from the center of the rotary rod (12A, 12A). And are attached to the link arm mounting portion (14, 14) of the rear leg column portion (6, 6) and fixed to the screw hole (14A) at a suitable position by the screw (31, 32) as the shaft. The left and right side frames (3, 3) and the X frame (11, 12) are firmly connected by the link arms (30, 30).
[0018]
In order to adjust the width of the wheelchair (1) of the present embodiment, the hook and loop fasteners (20, 22) of the back cloth (19) and the seat cloth (21) are peeled off, and the retaining shaft (27) is removed from the retaining shaft hole ( 13D) Pull out. Further, the pivot (26) is pulled out from the lower shaft (18) and the shaft hole (13A). Then, the screw (32) fixing the link arm (30) to the link arm attachment portion (14) is removed, and the link arm (30) and the side frame (3, 3) are released from connection. In this state, as shown in FIG. 8, the width of the X frame (11, 12) is increased by rotating the pivot rod (11A, 11A, 12A, 12A) of the X frame (11, 12) around the center C as a fulcrum. While adjusting, adjust the width of the wheelchair (1) by moving the side frames (3, 3) accordingly.
[0019]
At this time, if the width of the X frame (11,12) is narrowed, the vertical width of the X frame (11,12) is increased, and if the width of the X frame (11,12) is widened, the width of the X frame (11,12) is increased. The vertical width becomes smaller. Then, the lower shaft (18, 18) of the X frame (11, 12) is positioned by selecting an appropriate shaft hole of the shaft holes (13A, 13B, 13C), and the pivot shaft (26) is aligned with the shaft hole. (13A, 13B, 13C) and the cylindrical lower ridge (18, 18) are inserted to support the X frame (11, 12).
[0020]
When the width is adjusted in this way and the X frame (11, 12) is fixed to the side frame (3, 3), the retaining shaft (27) is attached to the retaining shaft hole (13D, 13D, Insert 26A).
Further, the link arm (30, 30) is passed from the center of the pivot rod (12A, 12A) to the upper part and the link arm mounting portion (14, 14) of the rear leg column (6, 6). , 12A) and the screw hole (14A, 14B, 14C) of the link arm mounting part (14, 14) selected in the screw hole (12B), and fixed with screws (31, 32) To do.
After adjusting the width between the side frames (3, 3) in this manner, the seat portion and the backrest are adjusted by reattaching the hook-and-loop fasteners (20, 22) of the seat cloth (19) and the back cloth (21).
[0021]
In this embodiment, there are three shaft holes and screw holes, and the width can be adjusted in three stages, but the shaft holes and screw holes may be two or four or more.
One or three or more X frames may be used.
The shafts (26, 31, 32) do not necessarily have to be pivots or screws, but if they are pivots or screws, the lower heel and the link arm can be rotated and the wheelchair can be folded as shown in FIG. .
[0022]
【The invention's effect】
In the present invention, since the width of the wheelchair can be adjusted without changing the height of the seat, it can be adjusted to the width that the user can operate most easily. Alternatively, the manufacturer does not have to manufacture many types of products with different widths.
[Brief description of the drawings]
1 to 9 show an embodiment of the present invention.
[Fig. 1] Wheelchair side view [Fig.2] Wheelchair front view [Fig.3] Wheelchair plan view [Fig.4] Seat cushion explanation perspective view [Fig.5] X frame perspective view [Fig.6] X frame attachment to side frame State description perspective view [FIG. 7] Link arm attachment state perspective view [FIG. 8] Width adjusting mechanism explanation front view [FIG. 9] Folded state wheelchair front view [FIG. 10] Conventional wheelchair explanation front view [Explanation of symbols]
1 Wheelchair 3 Side frame
11,12 X frame
11A, 11A, 12A, 12A Rotating rod
13A, 13B, 13C, 14A, 14B, 14C Shaft hole
26,32 Axis
30 Link arm

Claims (3)

A structure in which the left and right frames are connected by one or more X frames, the X frames being coupled to each other so as to be capable of mutual rotation at the center, and a pair of rotations in which the lower ends are pivotally attached to the lower portions of the left and right side frames. It consists Do杆, the pivoting杆下end is attached to the left right frame bottom through the shaft, the 該Sayu side frame bottom, a plurality of shaft holes are arranged in top and bottom is provided and which, by the Rukoto to support the shaft in the shaft hole by selecting one of the desired several plurality to correspond to the width shaft hole of the vehicle chair, the upper end portion of the X frame A wheelchair characterized in that the width of the wheelchair can be adjusted without changing the vertical position with respect to the left and right side frames and without changing the length of the X frame . Are passed pointing the link arm between at least a pair of central than the upper portion of the rotation bar and the left and right side frames, wherein the link arm to the attachment position in the left and right side frame side is to be vertically adjusted Item 1. The wheelchair according to item 1.   The link arm is attached via a shaft on the left and right side frame side, and the shaft is supported by one of a plurality of shaft holes provided on the side frame side and arranged vertically. 2. The wheelchair described in 2.

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