JPS6220195Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field This invention relates to a wheelchair for the transportation of physically disabled people, particularly a wheelchair that can be accommodated in a car.

(2) Conventional technology Conventional wheelchairs have large-diameter wheels on both sides, and large-diameter handle wheels are attached to these wheels so that the user can move by turning the handle wheels by hand.
Alternatively, there is one in which the wheels are powered by an electric motor. In addition, some wheelchairs are used when a person with a disability cannot operate the wheels by themselves, and a handle is provided at the upper rear of the wheelchair so that a caregiver can push the wheelchair by holding the handle.

(3) Problems that the invention aims to solve Although wheelchairs like the ones mentioned above can be loaded directly into large vehicles such as railway cars and large buses, it is difficult to load them directly into small vehicles such as regular passenger cars. It has to be foldable, but this requires the physically disabled person to get out of the wheelchair and sit in the car seat, which is extremely cumbersome, and is especially problematic for severely disabled people.

(4) Means for solving the problem In order to solve the above problem, this invention has a seat plate mounting part, a front part extending diagonally downward from the front end of the seat plate mounting part, and a seat plate mounting part. A seat plate and a backrest are respectively attached to the seat plate attachment part and the backrest attachment part of the main frame, which has an approximately square-shaped side surface, by the backrest attachment part extending obliquely upward from the rear end of the main frame. At the front lower end of the frame, the front part of a wheel mounting frame with a front wheel and a rear wheel is connected in a flexible manner, and the rear end of this wheel mounting frame and the upper end of the main frame are connected by a telescopic rod, so that the frame can be expanded and contracted. When the rod is extended, the front and rear wheels are movable, and when the telescopic rod is shortened, the wheel mounting frame and the telescopic rod follow the main frame, so the side shape of the wheel mounting frame is approximately square. It is.

(5) Function Since this device has the above-mentioned structure, when moving on the ground as a normal wheelchair, by extending the telescopic rod to the maximum, the front wheels and rear wheels touch the ground and can move freely, and the telescopic rod is shortened. When this is done, the wheel mounting frame takes on a shape that follows the main frame, allowing a physically handicapped person to be placed on a seat in a passenger car while remaining in the wheelchair.

(6) Example In the figure, A is a main frame consisting of a pair of left and right side frames 1. These both side frames 1 are bent as shown in Figure 2, and their upper ends are connected by a horizontal bar 2. When the handle 3 is fixed, the side surface shape is formed by the seat plate mounting part, the front part extending diagonally forward and downward from the front end of the seat plate mounting part, and the backrest mounting part also extending diagonally rearward and upward from the rear end of the seat plate mounting part. The main frame A is approximately square in shape.

B is a wheel mounting frame consisting of a pair of left and right side frames 4,
It has a pair of left and right swing-type front wheels 5 and a footrest 6 at its front part. A pair of left and right upward frames 7 on both sides of the front part of the mounting frame B are rotatably attached to the lower ends of the both side frames 1 by shafts 8, and this wheel mounting frame B also connects its left and right side frames 4 to the main frame A. It is bent from the bottom end along the rear part of the body, making the side surface shape almost square.

The rear ends of both side frames 4 of the wheel mounting frame B are expanded laterally and fixed to both ends of a horizontal bar 9. Furthermore, rear wheels 10 are attached to both ends of this horizontal bar 9, respectively.

A downward frame 11 is fixed to the center of the horizontal bar 2 at the upper end of the main frame A, and an upward piece 13 is fixed to the center of the horizontal bar 9 at the rear of the wheel mounting frame B.

The front part of a swing frame 14 is attached to the upward piece 13 by a shaft 17, and the upper and lower ends of a telescoping rod C are rotatably connected to the rear ends of the downward frame 11 and the swing frame 14 by shafts 18 and 19. do.

The telescopic rod C inserts the inner tube 1 into the outer tube 15 as shown in FIG.
The upper end of the outer tube 15 is rotatably connected to the downward frame 11 by a shaft 18, and the lower end of the inner tube 16 is connected to the swing frame 14 by a shaft 19.

The swing frame 14 is bent into a U-shape, and a rubber roller 20 is attached to the middle part of the swing frame 14 by a shaft.

A tension spring 22 is inserted into the telescopic rod C as shown in Fig. 5, and its upper and lower ends are connected to the shafts 18 and 19 to apply elasticity to the telescopic rod C in the direction of contraction, thereby tightening the inside of the outer tube 15 and the inner tube. Stoppers 23 and 24 are provided on the outside of the upper end of 16, respectively.
to prevent it from falling off.

25 is a fixed lever for the telescopic rod C, which is swingably attached to a branch provided on the front side of the outer tube 15 by a shaft 26, the upper end is pushed forward by a spring 27, and the telescopic rod C is extended from the lower end. A locking pin 30 is provided which engages with the engagement holes 28 and 29 of the outer tube 15 and inner tube 16, which are sometimes coincident.

A seat plate 32 filled with cushion material is fixed on the seat plate attachment part of the main frame A, and a backrest 33 filled with cushion material is fixed on the backrest attachment part at the rear of the main frame A.

Reference numeral 34 denotes a support rod which is attached to support pieces 35 on both sides of the seat plate 32 so that it can be raised and lowered by a shaft 36, and 37 is a forward U-shaped arm support frame whose front end is connected to the upper ends of both support rods 34 by a shaft 38 so that it can be raised and lowered freely. It is.

The rear part of the arm support frame 37 is located rearward from both sides of the main frame A, and includes a link 40 whose one end is rotatably connected to an upwardly facing piece 39 at both ends of the frame fixed to the rear upper part of the support frame 37. The ends are rotatably connected to the upper portions of both side frames 1, as shown in FIG. Further, a hook 42 is rotatably attached to the side frame 1, and is detachably engaged with a locking pin 41 fixed to the intermediate portion of the link 40, and causes the arm support frame 37 to protrude forward of the main frame when engaged. Install.

In the above embodiment, FIGS. 1 to 3 are in a state where the wheelchair can be moved, and at this time,
The telescopic rod C is fully extended, and the locking pin 30 of the lever 25 is engaged with the engagement holes 28 and 29 of the outer tube 15 and the inner tube 16, as shown in FIG.

Next, when the upper end of the lever 25 is pushed toward the telescopic rod C against the elasticity of the spring 27, the locking pin 30 is disengaged from the engagement holes 28 and 29. Therefore, the inner tube 16 is pulled into the outer tube 15 by the tension spring 22, and the telescopic rod C is shortened.

When the telescopic rod C is shortened, the wheel mounting frame B, which has a square-shaped side surface, rotates toward the main frame A around the shaft 8, and the wheel mounting frame B and the telescopic rod C rotate as shown in Fig. 4.
The side surface shape is in line with the main frame A, and it can be placed on the seat D of a passenger car as it is.

Further, if the arm support frame 37 is locked with the locking pin 41 of the link 40 at the rear thereof with the hook 42, the second
The main frame A is projected forward as shown in FIGS. 4 and 4, and when the hook 42 is removed and the link 40 is turned backward, it is retracted as shown by the chain line in FIG.

(7) Effects As mentioned above, when the rear telescopic rod is extended, the wheelchair of this invention functions as a normal hand-push wheelchair using the seat plate and backrest provided on the main frame, which has an almost square-shaped side profile. It can be used for transporting people with physical disabilities on the ground, etc., but when it comes to getting into a passenger car, etc., all you have to do is shorten the telescopic rod, and the side shape is almost square, making it a wheel mounting frame that follows the main frame. The telescopic rod approaches the main frame, and as it is,
It can be placed on the seat of a passenger car.

Therefore, even in the case of a person with a severe physical disability who is physically unstable, the person can be moved to a desired location while remaining in the wheelchair, and can also be placed on the seat of a passenger car by retracting the telescopic rod while remaining in the wheelchair. Eliminates the hassle of transferring physically disabled people from wheelchairs,
Moreover, the body is reliably supported by the wheelchair.

In addition, even when not in use, the telescopic rod is shortened so that it does not take up much space, so even when transporting or storing the wheelchair alone, it does not take up much space.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the wheelchair of this invention, FIG. 2 is a side view of the same, FIG. 3 is a rear view of the same, and FIG. 4 is a side view of the wheelchair placed on the seat of a passenger car. FIG. 5 is an enlarged longitudinal sectional side view with a partial cutaway of the telescopic rod. 5...Front wheel, 10...Rear wheel, 32...Seat plate, 3
3... Backrest, A... Main frame, B... Wheel mounting frame, C... Telescopic rod.

Claims (1)

[Scope of utility model registration request] The side surface shape is almost square due to the seat plate attachment part, the front part that goes diagonally forward and downward from the front end of the seat plate attachment part, and the backrest attachment part that goes diagonally backward and upward from the rear end of the seat plate attachment part. A seat plate and a backrest are respectively attached to the seat plate attachment part and the backrest attachment part of the main frame, and the front part of a wheel attachment frame having a front wheel and a rear wheel is attached to the lower front end of this main frame. The rear end of this wheel mounting frame and the upper end of the main frame are connected by a telescoping rod, so that when the telescoping rod is extended, the front and rear wheels can move, and when the telescoping rod is shortened, the wheel mounting frame A wheelchair characterized in that the side shape of the wheel mounting frame is approximately square-shaped so that the telescopic rod is shaped along the main frame.