JP2007275492A - Wheelchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheelchair easily adjusting the width of a seat. <P>SOLUTION: The seat width is adjusted by interchanging X-frames 11 and 12 connecting left/right side frames 3 and 3 of this wheelchair 1, base pipes 18 at the lower ends of the X-frames 11 and 12 are inserted into a pair of front/rear bearing brackets 13 and 13 extended from lower beams 10 of the left/right side frames 3 and 3, turning shaft rods 22 are inserted into the base pipes 18 of the X-frames 11 and 12 via shaft holes 13A of the pair of front/rear bearing brackets 13 and 13 to turnably attach turning rods 11A and 12A of the X-frames 11 and 12 to the lower beams 10 of the left/right side frames 3 and 3, and closing means 23 closing the outsides of the shaft holes 13A and preventing the pull-out of the turning shaft rods 22 are detachably attached to the bearing brackets 13. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wheelchair capable of adjusting a seat width.

In a wheelchair, it is desirable to change and adjust the seat width according to the body shape of the user.
As shown in FIG. 3, a wheelchair generally has a basic structure consisting of left and right side frames (3, 3) and a pair of front and rear X frames (11, 12) connecting the left and right side frames (3, 3). The pair of X frames (11, 12) is composed of rotating rods (11A, 11A, 12A, 12A) that are coupled to each other at the center, and are seated on the upper ends of the X frames (11, 12). The lower end of the pivot rod (11A, 11A, 12A, 12A) of the X frame (11, 12) is pivoted to the lower beam (10) of the left and right side frames (3, 3). Installed as possible.
In order to change the seat width from the past, prepare the X-frame (11,12) with various widths W at the top of the pair of rotary rods (11A, 11A, 12A, 12A). The rotating rods (11A, 11A, 12A, 12A) are selected and exchanged according to the seat width.
Conventionally, the lower end of the pair of pivot rods (11A, 11A, 12A, 12A) of the X frame (11, 12) can be pivotally attached to the lower beam (10) of the side frame (3, 3). 8, a pair of front and rear bearing brackets (13, 13) are extended from the lower beam (10), and the pair of front and rear X frames (11, 12) are interposed between the conventional bearing brackets (13, 13). A base pipe (18) for connecting the lower ends of the rotating rods (11A, 11A, 12A, 12A) is inserted, and the base pipe is inserted through the shaft holes (13A) of the pair of front and rear bearing brackets (13, 13). (18) is inserted into the pivot shaft 杆 (22), and as a measure for preventing the pivot shaft 杆 (22) from being removed, a rivet hole (34A) is opened in the bearing bracket (13). A configuration is provided in which a rivet (34) is driven from 34A) and the tip of the rivet (34) is brought into pressure contact with the outer periphery of the rotating shaft rod (22).

  In the above conventional configuration, when the X frame (11, 12) is replaced in order to change the seat width, the rivet (34) is removed from the rivet hole (34A) of the bearing bracket (13), and the pivot shaft (22) is removed from the shaft hole (13A) of the bearing bracket (13), so that the base pipe (18) of the X frame (11, 12) is passed through the bearing bracket (13) to the base pipe (18 ), Select another X frame (11,12), insert the base pipe (18) of the X frame (11,12) between the pair of front and rear bearing brackets (13,13) and rotate it. It was necessary to insert the dynamic shaft rod (22) into the base pipe (18) and to drive the rivet (34) from the rivet hole (34A) of the bearing bracket (13). .

As a means for solving the above-described conventional problems, the present invention provides a plurality of X frames (11, 12) constituted by a pair of rotary rods (11A, 12A) coupled to each other so as to be capable of mutual rotation. The left and right side frames (3, 3) of the wheelchair (1) are connected to each other, the seat (19) is supported on the upper ends of the plurality of X frames (11, 12), and the plurality of X frames (11 , 12) are connected by a base pipe (18), and the base pipe (18) is connected to a pair of front and rear bearing brackets (10) that are respectively extended from the lower beams (10) of the left and right side frames (3, 3). 13 and 13), and the rotation shaft rod (22) is inserted into the base pipe of the X frame (11, 12) through the shaft holes (13A, 13A) of the pair of front and rear bearing brackets (13, 13). (18) By inserting into the lower frame (10) of the left and right side frames (3, 3), the pivoting rods (11A, 12A) of the X frame (11, 12) are rotatably attached to the X frames (11, 12), The bearing bracket (13) is closed on the outside of the shaft hole (13A) to prevent the rotation shaft rod (22) from being removed. There is provided a wheelchair (1) mounted so as to be removed preparative closure means (23) for the.
The closing means (23) is a cover (23) to be attached to the bearing bracket (13), the outer plate (24), the inner plate (25), the outer plate (24) and the inner plate (25). An upper plate (26) communicating with the outer plate (24), and a fitting groove (27) for fitting the side armpit lower beam (10) is provided at the rear portion of the outer plate (24). (27) the front part becomes a closed part (28) to close the outside of the shaft hole (13A) of the bearing bracket (13), and the side armpit beam (10) is attached to the rear part of the inner plate (25). A fitting groove (29) for fitting is provided, and a fitting groove (30) for fitting the base pipe (18) of the X frame (11, 12) is provided at the front portion, and the cover ( The inner width of 23) is preferably set to be substantially the same as the outer width of the bearing bracket (13).

[Action]
In order to change the seat width, when the X frame (11, 12) is exchanged, a pair of front and rear which is sent out from the lower beam (10) of the left and right side frames (3, 3) If the closing means (23) attached to the bearing bracket (13, 13) is removed, the rotation can be easily performed from within the base pipe (18) via the shaft hole (13A) of the bearing bracket (13). The shaft rod (22) can be extracted, and thus the base pipe (18) of the X frame (11, 12) can be removed from the bearing bracket (13). When the X frame (11, 12) is removed from the left and right side frames (3, 3), another X frame (11, 12) is selected and the base pipe (18) of the X frame (11, 12) is removed. Inserted between the pair of front and rear bearing brackets (13, 13), and into the base pipe (18) of the X frame (11, 12) through the shaft hole (13A) of the bearing bracket (13, 13). Insert the rotary shaft 杆 (22) and attach the closing means (23, 23) to the bearing bracket (13, 13).

Invention of Claim 2 It is closed after inserting the rotating shaft rod (22) into the base pipe (18) of the X frame (11, 12) through the shaft hole (13A) of the bearing bracket (13, 13). A cover (23) as means (23) is attached to the bearing bracket (13, 13). In this state, the lower beam (10) of the side frame (3, 3) is fitted into each of the rear fitting grooves (27) of the outer plate (24) of the cover (23), and the cover (23) A base pipe (18) of the X frame (11, 12) is fitted into the front fitting groove (30) of the inner plate (25), and the front plate of the outer plate (24) of the cover (23) is closed. By means of the part (28), the pivot shaft (22) can be prevented from being pulled out.
When removing the X frame (11, 12), the cover (23) is removed from the bearing bracket (13, 13), and the pivot shaft rod (22) is removed from the X frame (11, 12) base pipe (18 ) Pull out from inside.

〔effect〕
In the present invention, it is easy to adjust the width of the wheelchair to the width that the user can operate most easily by attaching and detaching the X frame. There is no need to manufacture many types of wheelchairs with different widths.

  1 to FIG. 6, the main body (2) of the wheelchair (1) shown in FIG. 1 comprises a pair of left and right side frames (3, 3). 3) consists of a seat beam (4), front and rear leg columns (5, 6), armrest (7), back column (8), footrest support beam (9) and lower beam (10) The frame (3, 3) is connected by a pair of front and rear X frames (11, 12).

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 a mounting cylinder (48) is attached to the front leg column (5, 5). Auxiliary wheels (47) are attached via Further, a seat cloth (19) is passed over the pair of seat support rods (17, 17) at the upper end of the X frame (11, 12), and the back column (8, 8) of the side frame (3, 3). ) A back cloth (20) is passed between them, 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.
Further, an armrest pad (21) is attached to the upper surface of the armrest portion (7), and a handle (45) is attached by bending the upper end of the back column portion (8).

  As shown in FIG. 3, the pair of front and rear X frames (11, 12) connecting the left and right side frames (3, 3) are respectively a pair of pivot rods (11A, 11A) and a pair of pivot rods. (12A, 12A), and the pair of pivot rods (11A, 11A, 12A, 12A) are coupled to each other with the center C as a fulcrum, and the pair of X frames (11, 12) A pair of left and right pipe-shaped seat support rods (17, 17) are inserted and welded at the lower end to a pair of left and right base pipes (18, 18).

A pair of front and rear bearing brackets (13, 13) are provided on the lower beam (10) at the lower side of the side frame (3) via a length l ₁ minute of the base pipe (18) of the X frame (11, 12). ) Are welded, and the bearing bracket (13) is provided with a shaft hole (13A). Further, a pair of front and rear saddle supports (16, 16) for receiving the seat support rods (17, 17) of the X frame (11, 12) are provided on the upper side of the seat beam portion (4) of the side frame (3). It is attached.

  Further, a link arm mounting bracket (14) is welded to the rear part of the seat beam (4) of the left and right side frames (3, 3), and the link arm mounting bracket (14) has a screw hole (14A) as a shaft hole. ) Is provided.

In order to connect the side frames (3, 3) by the X frame (11, 12), the base pipe (18) of the X frame (11, 12) is connected to the left and right side frames (3, 3) as shown in FIG. , 3) between the pair of front and rear bearing brackets (13, 13) of the lower beam (10, 10) of the lower beam (10, 10), and through the shaft hole (13A) of the bearing bracket (13, 13) 22) is inserted into the base pipe (18). The length of該回Dojiku杆(22) is configured to substantially match the length l ₂ which connects the outer comrades of a pair of bearing bracket of the lower beam (10, 10) (13, 13).

  In order to prevent the rotating shaft rod (22) from coming out of the base pipe (18), the closing means are detachably attached to the pair of bearing brackets (13, 13).

  An example of the closing means is a cover (23) as shown in FIG. The cover (23) is attached to the bearing bracket (13), and comprises an outer plate (24), an inner plate (25), and an upper plate (26), and a rear portion of the outer plate (24). Is provided with a fitting groove (27) for fitting the lower beam (10) of the side frame (3), and the front part of the fitting groove (27) is a shaft hole of the bearing bracket (13). (13A) is a closing portion (28) for closing from the outside, and the rear portion of the inner plate (25) is a fitting groove for fitting the lower beam (10) of the side frame (3) ( 29) and a fitting groove (30) for fitting with the base pipe (18) of the X frame (11, 12) is provided at the front. The inner width of the cover (23) is set substantially the same as the outer width of the bearing bracket (13).

  As shown in FIG. 5, the cover (23) is attached to the pair of front and rear bearing brackets (13, 13) from above, and the rear fitting groove (27) of the outer plate (24) of the cover (23). And the lower beam (10) of the side frame (3) is fitted in the rear fitting groove (29) of the inner plate (25), and the front fitting groove (30) of the inner plate (25) is fitted. The base pipe (18) of the X frame (11, 12) is fitted, and as shown in FIG. 6, the outside of the shaft hole (13A) of the pair of front and rear bearing brackets (13, 13) is the outer plate (24). Closed by the front closure (28).

  In this way, the pivot shaft (22) is prevented from slipping out of the base pipe (18) of the X frame (11, 12), and the base pipe (18) removes the pivot shaft (22). It can be turned as a turning shaft, and the lower end of the turning rod (11A, 12A) of the X frame (11, 12) is thus rotatably attached to the lower beam (10) of the side frame (3). .

To adjust the seat width by replacing the X frame (11,12), remove the cover (23) from the bearing bracket (13) of the lower beam (10), then the base pipe ( 18) The pivot shaft (22) can be extracted from the inside, and the base pipe (18) of the X frame (11, 12) can be removed from the lower beam (10) of the side frame (3).
Then, the X frame (11, 12) that provides a predetermined seat width is selected and attached to the side frame (3, 3) in the same manner as described above.
Furthermore, the link arm (31, 31) is passed from the center of the rotary rod (12A, 12A) to the upper part and the link arm mounting part (14, 14) of the seat beam (4) of the side frame (3, 3). The screw holes (14A) of the link arm mounting brackets (14, 14) and the screw holes (14A) of the link arm mounting brackets (14, 14) are fixed with screws (32, 33).

  Other than this embodiment, as a means for closing the bearing bracket (13), for example, a disk magnet (23A) may be used as shown in FIG.

  Since the wheelchair of the present invention can be easily adjusted to an appropriate seat width corresponding to the body shape of the user, it can be used industrially.

1 to 6 show an embodiment of the present invention.
Wheelchair side view Wheelchair front view The perspective view for demonstrating the structure which attaches X frame to a side frame Partial perspective view for explaining a structure for attaching and retaining the base pipe of the X frame to the lower beam of the side frame Partial perspective view with cover attached to bearing bracket Partial sectional view with cover attached to bearing bracket Description perspective view of another embodiment Description perspective view of a conventional example

Explanation of symbols

1 Wheelchair 3 Side frame
10 Lower beam
11,12 X frame
11A, 12A rotating rod
13 Bearing bracket
13A shaft hole
18 Base pipe
22 Rotating shaft 杆
23 Cover (closing means)
24 Outer plate
25 Inner plate
26 Upper plate
27,29,30 Insertion groove
28 Closure

Claims (2)

  The left and right side frames of the wheelchair are connected by a plurality of X frames composed of a pair of pivoting rods that are coupled to each other so as to be capable of mutual rotation, and a seat is supported on the upper ends of the plurality of X frames. The left and right lower ends of the plurality of X frames are connected by a base pipe, and the base pipe is inserted between a pair of front and rear bearing brackets respectively extended from the lower beams of the left and right side frames, and the pair of front and rear bearing brackets The pivot rod of the X frame is inserted into the base pipe of the X frame through the shaft hole of the X frame, so that the pivot rod of the X frame is pivotally attached to the lower beam of the left and right side frames, respectively. A wheelchair characterized in that the outer side of the shaft hole is closed and the closing means for preventing the rotation shaft rod from being removed is detachably attached.   The closing means is a cover that is attached to the bearing bracket, and includes an outer plate, an inner plate, and an upper plate that connects the outer plate and the inner plate. A fitting groove for fitting the lower beam is provided, and the front part of the fitting groove becomes a closed part to close the outside of the shaft hole of the bearing bracket. A fitting groove for fitting the base pipe of the X frame is provided at the front portion, and the inner width of the cover is substantially the same as the outer width of the bearing bracket. The wheelchair according to claim 1 which is set up.

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