JP2002126009A - Tilting type wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tilting type wheelchair that even a little person can get on and off easily because it can set the height of a seat in a suitable low place, and the labor of a care-giver can be reduced when tilting because it becomes very comfortable to sit in and further it can make the turning-radius of a tilt lateral frame large. SOLUTION: The tilting type wheelchair 1 comprises the pair of the lateral group frame 2 from side to side on which the main axle 211 is fixed in the rearward and the caster 220 is fixed in an anterior part, and the pair of the tilt lateral frame 3 from side to side which is fixed on each of the lateral group frame 2 with possible. The right and left bottom of the X-linking frame 37 is joined to the pair of the tilt lateral frame 3 from side to side respectively. The cushion 38 is placed on the right and left top of the X-linking frame 37.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt type wheelchair.

[0002]

2. Description of the Related Art A conventional tilt-type wheelchair (1A) has a pair of left and right side base frames (2) joined by lower right and left lower ends of a pair of front and rear X-link frames (37) as shown in FIGS. )
And a tilt side frame (3) mounted on the upper edge of the side base frame (2) via a rotation mounting bracket (23), and a main portion is provided at a rear portion of the side base frame (2). An axle (211) is mounted, and a caster (220) is mounted on the front part.
A seat (38) is provided to (3). Further, the tilt side frame
A backrest side frame (4) is provided at the rear end of (3), and a U-shaped frame (5) is detachably attached to the upper end of the backrest side frame (4). 4) and U-shaped frame
The back cloths (41, 52) are passed to (5), respectively. In the above-mentioned tilt type wheelchair (1A), the rotation mounting bracket (2
The tilt side frame (3) can be rotated rearward as shown by the arrow in FIG. 13 to be in the tilted state as shown in FIG. 15 through 3). Character frame (5)
Can be removed, and can be folded through the X-link frame (37) as shown in FIG.

[0003]

However, in the conventional tilt-type wheelchair (1A), since the cushion (38) is attached to the tilt side frame (3), the tilt-type wheelchair is folded. It is necessary to raise the position of the cushion (38) so that the cushion (38) of the side frame (3) does not interfere with the upper end of the X-link frame (37). Also, there is a problem that it is difficult for a weak person such as an elderly person to get on and off the vehicle, and that it is difficult to sit down. In addition, since the turning radius of the tilt side frame (3) is small, there is a problem that the caregiver requires labor when tilting while carrying a person.

[0004]

According to the present invention, as a means for solving the above-mentioned conventional problems, a pair of right and left sides having a main axle (211) mounted at the rear and a caster (220) mounted at the front are provided. A base frame (2) and a pair of left and right tilt side frames (3) rotatably mounted on each of the side base frames (2). Is the X link frame (37)
The left and right lower ends of the X-link frame are joined together.
The present invention provides a tilt-type wheelchair (1) in which a cushion (38) is provided at the left and right upper ends of (37).

[0005] A backrest side frame is provided at the rear of the tilt side frame (3).
(4) are provided, and the left and right backrest side frames are provided.
A U-shaped frame (5) is detachably attached to the upper end of (4), and back cloths (41, 52) are inserted between the left and right backrest side frames (4) and the U-shaped frame (5). Desirably passed.

Further, the tilt side frame (3) is rotatably mounted on the side base frame (2) by a rotation mounting bracket (23) at an intermediate portion. A cylinder (6A) with a tilt stopper is attached to the front part, and a rod (61A) connected to the front part of the side base frame (2) slidably penetrates the cylinder (6A). And
The front portion of the tilt side frame (3) and the front portion of the side base frame (2) are locked by a stopper in the rotation mounting bracket (23), the cylinder (6A), and the cylinder (6A). It is desirably connected at three points by a rod (61A).

Further, it is desirable that the backrest side frame (4) is attached to the tilt side frame (3) so as to be reclineable, and a reclining stopper is provided at a rear portion of the tilt side frame (3). It is desirable that the attached cylinder (6B) is attached and a rod (61B) connected to the backrest side frame (4) slidably penetrates the cylinder (6B).

[0008]

The tilt type wheelchair (1) of the present invention has a main axle at the rear.
A pair of left and right side base frames (2) on which (211) are mounted and casters (220) are mounted on the front part, and a pair of left and right sides rotatably mounted on each of the side base frames (2). Tilt side frame
The lower end of the X-link frame (37) is joined to the pair of left and right tilt side frames (3) so that the X-link frame (37) can be folded. Since the cloth (38) is delivered, there is no problem of interference with the cushion (38) when folded as in the conventional tilt type wheelchair (1A), and the height of the cushion (38) is It can be set to an optimum position lower than that, and the turning radius of the tilt side frame (3) can be increased. In this case, a cylinder (6A) with a tilt stopper is attached to the front of the tilt side frame (3), and the rod (61A) connected to the front of the side base frame (2) is inserted into the cylinder (6A). The rod (61A) can be locked with a stopper in the cylinder (6A) in this state by appropriately adjusting the tilt angle according to the use condition.

Further, when a backrest side frame (4) is provided at the rear of the tilt side frame (3) so as to be reclineable, a cylinder with a stopper for reclining stopper (6B) is provided at the rear of the tilt side frame (3). Attach the cylinder (6B)
The rod (61B) connected to the backrest side frame (4) inside
If the rod (61B) is slidably penetrated, the rod (61B) can be locked in the cylinder (6B) by a stopper at an appropriate reclining position, and that position can be maintained.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in FIGS. Tilt-type wheelchair shown in FIGS.
(1) is a pair of left and right side base frame (2), the left and right side base frame (2)
A pair of left and right tilt side frames (3) respectively mounted so as to be tiltable, and a backrest side mounted at the rear of the tilt side frame (3) so as to be reclineable with respect to the tilt side frames (3). A frame (4) and a U-shaped frame (5) removably fitted to the upper end of the backrest side frame (4).
In this embodiment, the side base frame (2), the tilt side frame (3),
As the backrest side frame (4) and the U-shaped frame (5),
A metal pipe such as an aluminum pipe or a stainless steel pipe, or a plastic pipe such as a polypropylene pipe or a polyvinyl chloride pipe is used.

As shown in FIG. 4, the side base frame (2) is bifurcated forward from the rear end, and a bearing (21) is provided at the rear, and the main axle is mounted on the bearing (21). (211) are supported, and a brake (not shown) is further provided inside. A support cylinder (22) of a caster (220) is fixed to the front of the side base frame (2), and a bearing part of the caster (220) is mounted on the support cylinder (22).
The vertical axis (222) of (221) is fitted to be rotatable left and right.
A rotation mounting bracket (23) of the tilt side frame (3) is fixed to an intermediate portion of the side base frame (2), and the tilt side frame (3) is tilted to the rotation mounting bracket (23). Mounted as possible. In the present embodiment, a parking brake (24) comprising a locking piece (242) connected to a parking brake lever (241) is provided at the rear of the middle portion of the left and right side base frames (2). The parking brake (24) is
By operating 1), the locking piece (242) is brought into contact with the main wheel (210) to apply a pressing force to lock the left and right main wheels (210) respectively.

As shown in FIG. 4, the tilt side frame (3) comprises a front vertical rod (31) and a rear vertical rod (32), a front vertical rod (31) and a rear vertical rod (32). An upper horizontal rod (33) and a lower horizontal rod (34) are provided, and a pair of front and rear receiving frames (331) are attached inside the upper horizontal rod (33). Left and right front end vertical rods (3
1) and armrest frame (35) at the upper end of the rear vertical rod (32)
The armrest frame is detachably fitted.
An armrest (351) is installed on the armrest (351), and side plates (352) are passed over the armrest frame (35) so that the user's clothes can be removed from the lower side of the armrest (351). The problem of protruding and getting caught in the main wheel (210) is solved. Further, a backrest side frame (4) is connected via a bearing bracket (4A) to the upper edge of the loop frame (36) projecting rearward from the rear vertical rod (32) so as to be reclined. As shown in FIGS. 5 to 7, the tilt side frame (3) is joined by a pair of front and rear X-link frames (37).
Are rotatably mounted on the inside of the lower horizontal rod (34) via a bearing (341).
2) has a cushion (38). Further, a link (37) is provided between the left and right rear end vertical rods (32) and the upper part of the X-link frame (37).
3) has been passed. A back cloth (41) is stretched between the backrest side frames (4) of the pair of left and right tilt side frames (3), and a mounting block (42) is provided at an upper end of the left and right backrest side frames (4). Are provided, and both end rods (51, 51) of the U-shaped frame (5) are detachably fitted from the mounting block (42),
A U-shaped frame (5) extended to the left and right backrest side frames (4) in this manner is provided with a back cloth (52).

A handlebar (43) extends backward from the upper end of the backrest side frame (4), and a tilt lock release lever (43A) is attached to the handlebar (43) of one backrest side frame (4). The reclining lock release lever (43B) is attached to the handlebar (43) of the other backrest side frame (4).
Between the handlebars (43, 43) and the rear end of the left and right backrest side frames (4), a foldable horizontal bar (44) having a joint (441) with a pin stopper in the center is passed. , The folding horizontal rod (4
A brake lever (443) connected to the brake of the main wheel (210) is attached to the grip (442) of 4).

In the present invention, a tilt stopper cylinder (6A) is attached to the front of the tilt side frame (3), and is connected to the front of the side base frame (2) in the cylinder (6A). The tilting rod (61A) is slidably penetrated, and a cylinder (6B) with a stopper for reclining is attached to the rear of the loop frame (36) of the tilt side frame (3). A rod (61B) rotatably connected to an intermediate portion of the backrest side frame (4) is slidably penetrated in the parentheses.

As shown in FIG. 8, a pair of upper and lower bearing portions (711) of a bearing cylinder (71) fitted to the front vertical rod (31) of the tilt side frame (3) has a footrest (7). A pair of upper and lower rotating brackets (73) projecting from the shaft rod (72) are respectively fitted to be rotatable left and right, and a support rod for a footrest (7) is mounted on the upper end of the shaft rod (72). The upper end of (74) is vertically rotatably mounted, and the footrest mounting shaft (75) projecting from the lower end of the support rod (74) has a footrest.
The root end of (7) is mounted to be rotatable up and down. A leg rest turning bracket (761) extending from the root end of the leg rest (76) is further mounted on the intermediate portion of the shaft rod (72) of the foot rest (7) so as to be able to turn left and right. Then, a pair of upper and lower pins (731, 73
1) and a locking piece having an engaging hole (771) for engaging an engaging pin (311) protruding from the front vertical rod (31) of the tilt side frame (3). (77) is slidably fitted through a pair of upper and lower pin holes (772, 772) provided at the root end of the lock piece (77). The lock piece (77) has an engagement hole (771) formed by a biasing spring (not shown) fitted to a pin (731, 731) of the rotation bracket (73). Engagement pin (3
11), and a lever with handle (773) is protruded from the bent portion of the tip of the lock piece (77). Further, in this embodiment, the footrest
A cylinder (6C) with a footrest rotation stopper is attached to the lower end of the shaft rod (72) of (7), and the cylinder (6C) is located near the upper middle part of the support rod (74) of the footrest (7). A pivotally mounted rod (61C) slidably penetrates, and the footrest adjusted to the user
The rotation angle of (7) can be locked and maintained by the stopper of the cylinder (6C).

When the footrest (7) is in use, the engagement hole (771) at the root end of the locking piece (77) of the footrest (7) is engaged with the front end vertical rod (31) of the tilt side frame (3). When the footrest (7) is folded and is engaged with the engaging pin (311), the locking piece (77) is bent via the lever (773) with a handle at the bent end of the locking piece (77). After the engagement hole (771) is removed from the engagement pin (311), the footrest (7) is rotated outward, and the legrest (76) is rotated toward the side base frame (2). The footrest (7) is turned upward and folded.

The above three cylinders with stoppers (6A, 6
B, 6C) have the same structure, and the structure of the cylinder with a tilt stopper (6A) shown in FIG. 9 will be described. The cylinder can slide inside the cylinder (6A). Rod (61A) penetrating through the cylinder (6A)
The slide is locked by being tightened by a lock spring (62A) as a stopper housed in the lock spring, and a lock lever (63A) attached to the lock spring (62A) has a backrest side frame (4). An operation wire (not shown) extending from the lock release lever (43A) of the handle rod (43) is connected. The lock lever (63A) and the operation wire are urged in the lock direction by an urging spring (not shown), and the lock release lever (43A)
When the operating wire is pulled against the urging force of the urging spring and the operating wire is pulled, the lock lever (63A) is rotated in the direction in which the lock spring (62A) is loosened against the rod (61A) to lock. Is released. The lock release lever
When (43A) is released, the lock lever (63A) returns via the operating wire by the urging force of the urging spring, and the lock spring (62A) locks the rod (61A) again tightly. In the present embodiment, the lock lever (63C) is manually operated without providing an operation wire on the cylinder (6C) with the stopper for rotating the footrest.

When the tilt type wheelchair (1) is in use, the caregiver can move the left and right parking brake levers of the side base frame (2).
(241) to lock the main wheels (210), respectively, and then the caregiver operates the tilt lock release lever (43A) of the handle bar (43) of the backrest side frame (4) to tilt the tilt stopper. Unlock the cylinder (6A) with
When (3) is tilted and rotated with respect to the side base frame (2), the tilt type wheelchair (1) is in a tilted state (see FIG. 10). In the tilt-type wheelchair (1) of the present invention, since the lower end of the X-link frame (37) is joined to the pair of left and right tilt side frames (3) and the center of rotation is located below, the tilt side frame It is possible to increase the turning radius of (3), and it is possible to reduce the labor required for the caregiver to tilt the tilt-type wheelchair (1). Further, a cylinder with a tilt stopper (6A) is attached to the front of the tilt side frame (3), and a rod (61A) connected to the front of the side base frame (2) is slid into the cylinder (6A). Since it is movably penetrated, the tilt angle can be appropriately adjusted according to the use condition, and in this state, the rod (61A) can be locked by the stopper in the cylinder (6A).

In the use state of the tilt type wheelchair (1), the caregiver operates the left and right parking brake levers (241) of the side base frame (2) to lock the main wheels (210). Thereafter, the caregiver operates the reclining lock release lever (43B) of the handle bar (43) of the backrest side frame (4) to release the lock of the reclining stopper cylinder (6B), and the backrest side frame ( When 4) is reclined and rotated with respect to the tilt side frame (3), the tilt type wheelchair (1) is in a reclining state (see FIG. 11). In this case, when a backrest side frame (4) is provided at the rear of the tilt side frame (3) so as to be reclineable, the tilt side frame (3) is provided.
(3) Cylinder with reclining stopper at rear
(6B), and the backrest side frame in the cylinder (6B).
Since the rod (61B) connected to (4) is slidably penetrated, the rod (6
1B) can be locked with a stopper in the cylinder (6B) and the position can be maintained.

When the tilt type wheelchair (1) is in use, the upper end rod (372) is connected to the receiving frame inside the upper horizontal rod (33) of the left and right tilt side frames (3) as shown in FIGS. (331), and to make the tilt-type wheelchair (1) folded, remove the U-shaped frame (5) from the backrest side frame (4),
Release the pin stopper (441A) of the foldable side bar (44) of the backrest side frame (4) and fold the foldable side bar (44) via the pin stopper-attached joint (441). Cushion
The central portion of (38) is pulled upward, and the left and right side base frames (2) and the tilt side frame (3) are folded through the X-link frame (37) as shown in FIG. At this time, the upper end rod (372) of the X-link frame (37) is directly pulled by the cushion (38) and
The tilt side frame (3) is removed upward from the U-shaped frame of (3), and the tilt mounting bracket (23) and the tilt away from the rotary mounting bracket (23) with respect to the side base frame (2). Side frame (3) Cylinder with tilt stopper attached to the front
(6A) and a rod (61A) attached to the front part of the side base frame (2) also separated from the pivot mounting bracket (23) and locked by a stopper in the cylinder (6A). Because they are connected at points, the rigidity of this connection is high,
Therefore, it follows the folding of the X-link frame (37) smoothly. In the tilt-type wheelchair (1) of the present invention, since the cushion (38) of the tilt side frame (3) does not interfere with the upper end of the X-link frame (37) in the folded state, the height of the cushion (38) is reduced. It can be set at an appropriate low position, so that people with weak power can easily get on and off and have a very good sitting comfort.

[0021]

According to the present invention, since the height of the cushion can be set at an appropriate low position, even a weak person can easily get on and off the tilt-type wheelchair, and the sitting comfort is very good. Since the rotation radius of the tilt side frame can be increased, the labor of the caregiver when tilting the tilt-type wheelchair can be reduced.

[Brief description of the drawings]

 1 to 12 show an embodiment of the present invention.

FIG. 1 is a side view of a tilt-type wheelchair.

FIG. 2 is a front view of a tilt-type wheelchair.

FIG. 3 is a rear view of a tilt-type wheelchair.

FIG. 4 is a side view of a frame of a tilt-type wheelchair.

FIG. 5 is a rear view of the X-link frame.

FIG. 6 is a plan view of an X-link frame.

FIG. 7 is a partially omitted plan view of a frame of the tilt-type wheelchair.

FIG. 8 is a perspective view of a footrest mounting portion.

FIG. 9 is an explanatory side sectional view of a cylinder with a stopper.

FIG. 10 is a side view of a tilt-type wheelchair (tilted state).

FIG. 11 is a side view of a tilt-type wheelchair (in a reclining state).

FIG. 12 is a front view of a tilt-type wheelchair (in a folded state).

FIG. 13 is a side view of a conventional example.

FIG. 14 is a front view of a conventional example.

FIG. 15 is a side view of a conventional example (tilted state).

FIG. 16 is a front view of a conventional example (in a folded state).

[Explanation of symbols]

 1 Tilt type wheelchair 2 Side base frame 211 Main axle 220 Caster 23 Rotation mounting bracket 3 Tilt side frame 37 X link frame 38 Seat 4 Backrest side frame 41 Back cloth 5 U-shaped frame 52 Back cloth 6A Cylinder with stopper for tilt 61A rod 6B Cylinder with stopper for reclining 61B rod

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[Procedure amendment]

[Submission date] October 30, 2000 (2000.10.
30)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 5

FIG. 6

FIG. 7

FIG. 9

FIG. 14

FIG. 8

FIG. 10

FIG. 11

FIG.

FIG. 13

FIG.

FIG.

Claims (6)

[Claims] 1. A pair of left and right side base frames having a main axle mounted on a rear portion and casters mounted on a front portion, and a pair of left and right tilt sides rotatably mounted on each of the side base frames. The left and right lower ends of the X-link frame are respectively joined to the pair of left and right tilt side frames, and a cushion is provided at the left and right upper ends of the X-link frame. Tilt-type wheelchair. 2. The tilt-type wheelchair according to claim 1, wherein a backrest side frame is provided at a rear portion of the tilt side frame. 3. A U-shaped frame is detachably attached to the upper ends of the left and right backrest side frames, and a back cloth is passed over the left and right backrest side frames and the U-shaped frame, respectively. The tilt-type wheelchair according to 1. 4. The tilt side frame is rotatably mounted on the side base frame at a middle portion by a rotation mounting bracket, and a cylinder with a tilt stopper is mounted on a front portion of the tilt side frame. A rod connected to a front portion of the side base frame is slidably penetrated through the cylinder, and the tilt side frame front portion and the side base frame front portion are connected to the rotation mounting bracket. 4. The wheelchair according to claim 2, wherein the cylinder is connected at three points by the cylinder and a rod locked by a stopper in the cylinder. 5. The backrest side frame is attached to the tilt side frame so as to be reclineable.
The tilt-type wheelchair according to any one of claims 1 to 4. 6. A cylinder with a stopper for reclining is mounted on a rear portion of the tilt side frame, and a rod connected to the back side frame is slidably penetrated through the cylinder. Item 6. The tilt-type wheelchair according to Item 5.