JPH0661352B2 - wheelchair - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair which can be called a large wheel transfer wheelchair.

[0002]

2. Description of the Related Art Conventionally, a wheelchair has the following structure. 1. Wheelchairs are made of steel or light alloy pipe frames and consist of large wheels, small caster wheels, seats, armrests, backrests, and footrests. 2. The foldable type has a seat and backrest made of leather or cloth stretched over the pipe frame, with an X under the seat.
When the character-shaped connecting frame is folded, the seat and the backrest are made of cloth, so that the space between the left and right frames is narrowed, and they can be easily folded for easy storage and carrying. For the movement, there is a wheel on the outside of the large wheels that is a little smaller than the tire, and by turning the wheel by hand from the seat, you can move forward and backward without using your foot.

[0003]

The problems described in the prior art have the following problems. 1. Wheelchairs are designed for the purpose of moving people with disabilities in their legs and hips, so
It does not take into consideration the case of lateral transfer to a toilet seat or the like. 2. Although the wheelchair is foldable, it is impossible to change the width of the vehicle while the driver is still on it, so temporary narrow doorways and passages cannot be passed. 3. Since the seats and backrests are not waterproof, they cannot be used in high temperature and high humidity.

The present application has been made in view of the above problems of the prior art, and an object of the present application is to provide a device capable of solving the above problems. That is, 1. When a wheelchair driver laterally transfers to another object, simply removing the armrests makes no sense for the large wheels.Therefore, when the armrests are pushed down, the large wheels are automatically moved backward, and at the same time the movement ends. The series of operations, such as braking, eliminated the obstacles on the side of the seat and made it easier to transfer. 2. When changing the vehicle width while the driver is still on the vehicle, the vehicle width can be temporarily secured arbitrarily by making the X-shaped connecting frame under the seat horizontal and releasing the folding restriction function. So you can pass through narrow places.

[0005]

In order to achieve the above object, the present invention is as follows. That is, in the present application, the left and right sides forming the frame 2 are
The frame bodies 3 and 4 include horizontal upper and lower pipes 3A and 4A,
Vertical pipes 3B and 4B before and after connecting these upper and lower pipes
Is formed into a square shape on the side surface.
Inclined frame 3 configured to be lower toward the front
C and 4C are connected in series, and a footrest is attached to the tip of this inclined frame.
3D and 4D are detachably attached, behind the frame 2
Rear frames 3E and 4E each having a substantially inverted U-shaped side surface
The pipe 5A and the other pipe 5A.
It is configured by connecting the pipe 5B in a plane X shape with the vertical pin 5C.
The tip of one pipe 5A in the connecting frame 5 is
Slidably connected to the lower pipe 4A of the boom body 4,
The rear end of the one pipe 5A is attached to the left frame body 3.
It is rotatably connected to the vertical pipe 3B after being opened, and the other
The tip of the ip 5B is the lower pipe 3 in the left frame body 3.
A is slidably connected to A, and after the other pipe 5B
The end turns to the rear vertical pipe 4B in the right frame body 4
It is freely connected, and the inner end is connected with the front and rear pins 6A.
Left of lever 6 consisting of left and right stays 6B and 6C
The outer end of the stay 6B of the
It is rotatably connected to the vertical pipe 3B and
The outer end of the stay 6C is the rear vertical portion of the right frame body 4.
The frame 2 is rotatably connected to the pipe 4B.
The casters are small on the lower surface of the front through the legs 7A and 8A of a predetermined size.
The wheels 7 and 8 are attached to the left and right frame bodies 3 and 4.
The seat 9 is made of cloth stretched between the upper pipes 3A and 4A.
Made of cloth that is stretched between the rear frames 3E and 4E.
Outside of the left and right frame bodies 3 and 4 where the lean 9A is configured
The wheel unit 10 arranged in the
In the vicinity of the rear ends of the upper pipes 3A, 4A in the frame
Oscillate in the front-back direction with the pin 10A in the direction orthogonal to the traveling direction of
Axle arm 10B supported movably and this axle arm
Axle 10C protruding outward at the lower end of the outer surface of the
Well-known large wheel 10D rotatably mounted on an axle
And an elbow hook that swings this axle arm back and forth.
It consists of a scale 10E and this armrest 10E is a pipe
Is formed in a sideways inverted U shape, and the rear end of this armrest is left
Pierce the upper pipes 3A and 4A on the right frame bodies 3 and 4.
It is connected by a pin 10F that is parallel to the
The lower end and the substantially central portion of the axle arm 10B are located at the first position.
Link 10G, the second link 10H is connected,
The front end of the hanging is the frame body on the left and right through the lock portion 10I.
Small bars protruding from the front vertical pipes 3B and 4B in 3 and 4
The locking portion is configured to engage with and disengage from the protrusion 10J.
10I is fixed with the direction perpendicular to the end surface of the armrest 10E.
The attached horizontal pipe 10I1 and the end of this horizontal pipe are opened.
In the installed U-shaped receiving portion 10I2 and the horizontal pipe 10I1
A pressing rod 1 that always acts in the direction of the receiving part with a coil spring
0I3 and outside of the left and right frame bodies 3 and 4
The brake unit 11 arranged on the
Of the lower pipes 3A and 4A in FIG.
Brake arm 11A pivotally attached to a point and left and right frames
Provided on the rear frames 3E, 4E side of the bodies 3, 4
Installed on the fulcrum so that it can rise and fall in the tread surface direction of the large wheel 10D.
The worn first brake pin 11B and the left and right frame bodies
Pivotally attached to fulcrums provided on lower pipes 3A and 4A in 3 and 4
11C of the 1st brake arm which drooped, and this 1st brake
Brake rod 11D pivotally attached to the lower end of the
Second brake arm pivotally attached to the rear end of the brake rod
11E and the brake pivotally attached to this second brake arm
When the rod 11F is pivotally attached to the first brake pin 11B,
In addition, the brake arm 11A and the first brake arm 11C
And are wheelchairs connected by an arm 11G.

[0006]

EXAMPLES Examples will be described with reference to the drawings. 1 is a wheelchair of the present invention. Reference numeral 2 is a frame composed of left and right frame bodies 3 and 4. Therefore, in the left and right frame bodies 3 and 4, horizontal upper and lower pipes 3A and 4A and front and rear vertical pipes 3B and 4B connecting the upper and lower pipes are formed in a side surface rectangular shape. Further, inclined frames 3C and 4C configured so as to become lower toward the front are continuously provided at the upper end of the front surface of the frame 2, and known footrests 3D and 4 are provided at the tip of the inclined frame.
D is detachably attached.

Further, rear frames 3E and 4E having substantially U-shaped side surfaces are provided on the rear portion of the frame 2 so as to project upward. 5 is a vertical pin 5C with one pipe 5A and the other pipe 5B.
Is a connecting frame configured by connecting in a plane X shape. The tip of one pipe 5A is slidably connected to the lower pipe 4A of the right frame body 4, and the rear end of the one pipe 5A is rotated to the rear vertical pipe 3B of the left frame body 3. It is freely connected. Further, the tip of the other pipe 5B is slidably connected to the lower pipe 3A of the left frame body 3, and the rear end of the other pipe 5B is rotated to the rear vertical pipe 4B of the right frame body 4. It is freely connected.

Reference numeral 6 designates a lever composed of left and right stays 6B and 6C whose inner ends are connected by front and rear pins 6A. The outer end of the left stay 6B is connected to the rear vertical pipe 3B of the left frame body 3. The right stay 6C is rotatably connected to the rear vertical pipe 4B of the right frame body 4, and the outer end of the right stay 6C is rotatably fast connected to the rear vertical pipe 4B. As a result, when the knob 6A1 connected to the pin 6A is gripped and pulled upward, the left and right frame bodies 3 and 4 can be contracted with respect to the center line in the traveling direction of the frame as shown in FIG. By pushing 6A1 downward, the left and right frame bodies 3, 4 can be expanded left and right.

Numerals 7 and 8 are caster small wheels mounted on the lower front surface of the frame 2 via legs 7A and 8A having predetermined dimensions. Reference numeral 9 denotes upper pipes 3A, 4 on the left and right frame bodies 3, 4.
It is a known seat made of cloth stretched between A and A. 9A is a backrest made of cloth.

Reference numeral 10 denotes a wheel portion arranged outside the left and right frame bodies 3 and 4. Axle arm 10B that is swingably supported in the front-rear direction by a pin 10A in a direction orthogonal to the traveling direction of the frame in the vicinity of the rear ends of the upper pipes 3A, 4A in the left and right frame bodies 3, 4, and this axle arm. An axle 10C protruding outward from the lower end of the outer surface of the vehicle, a known large wheel 10D rotatably attached to the axle, and an armrest 10E for swinging the axle arm in the front-rear direction. There is.

Therefore, in this armrest 10E, the pipe is formed in a substantially U-shape on the side surface, and the rear end of this armrest has a pin 1 on the upper pipes 3A, 4A of the left and right frame bodies 3, 4.
It is connected by a pin 10F parallel to 0A. The lower end of the armrest is connected to almost the center of the axle arm 10B via a first link 10G and a second link 10H, and the front end of the armrest is connected to the left and right via a lock portion 10I. Frame body 3,
4 is configured to engage with and disengage from the small bar-shaped projection 10J projecting from the front vertical pipes 3B and 4B. The lock portion 10I includes a horizontal pipe 10I1 fixed to the end surface of the armrest 10E in an orthogonal direction, a U-shaped receiving portion 10I2 opened at the tip of the horizontal pipe, and a coil spring in the horizontal pipe 10I1. It is composed of a pressing rod 10I3 acting in the direction of the receiving portion.

Then, when the lock of the armrest is released and the armrest is pushed downward with the pin 10F as a fulcrum, the axle arm 10B moves rearward at a predetermined angle with the pin 10A as a fulcrum, and the large wheels move rearward. Become. As a result, the large wheels are removed from the upper surface portions of the left and right frame bodies 3 and 4, and the disabled person can be moved to a desired bed, for example, from this portion.

Reference numeral 11 denotes a brake portion arranged outside the left and right frame bodies 3 and 4. Brake arm 11 pivotally attached to a fulcrum provided at substantially the center of lower pipes 3A and 4A in left and right frame bodies 3 and 4.
A and the rear frame 3 in the left and right frame bodies 3 and 4
The first brake pin 11B provided on the fulcrums provided on the E and 4E sides so as to be capable of undulating in the tread surface direction of the large wheel 10D
And the lower pipes 3A, 4 on the left and right frame bodies 3, 4
A first brake arm 11 pivotally hung on a fulcrum provided on A
C, a brake rod 11D pivotally attached to the lower end of the first brake arm, a second brake arm 11E pivotally attached to the rear end of the brake rod, and a brake rod 11F pivotally attached to the second brake arm. It is pivotally attached to the 1 brake pin 11B, and the brake arm 11A and the first
The brake arm 11C is connected by an arm 11G. Reference numeral 11H is a second brake pin, and 11I is a return spring.

In this case, the second brake pin 11H is shown in FIG.
As described above, it is not only a stopper for the large wheel 10D that has moved rearward by the swing of the axle arm 10B, but also an automatic brake.

The operation of this brake unit is as follows. When the brake arm 11A is pressed downward, the first brake pin 11B is drawn downward and comes into contact with the tread surface of the large wheel 10D to stop its rotation. When the pressure applied to the brake arm 11A is released, the brake spring is restored by the return spring 11I and the first brake pin is also separated from the large wheel.

Considering that the wheelchair of the present application is used in high temperature and high humidity poolside, bathroom, water, etc., the frame pipe is corrosion resistant, the seat and back cloth is nylon mesh, each wheel bearing Is made of Teflon metal.

The operation will be described together with the effect.

[0018]

Since the present invention is configured as described above, it has the following effects. 1. When a person with a disability on a wheelchair wants to move to another person, or a caregiver wants to move to another person, unlock the armrest and push the armrest downward with the pin 10F as a fulcrum. 10B moves rearward at a predetermined angle with the pin 10A as a fulcrum, and the large wheels move rearward.
The large wheel, which has been an obstacle, is removed from the upper surface portion of 4, so that the disabled person can move to a desired bed, for example.

2. When the knob 6A1 connected to the pin 6A is gripped and pulled up, as shown in FIG. 6, the left and right frame members 3, 3 with respect to the center line in the traveling direction of the frame.
4 can be contracted, and the left and right frame bodies 3, 4 can be expanded left and right by pushing down the knob 6A1. Therefore, it is very convenient to move in a narrow space. 3. When the brake arm 11A is pressed downward, the first brake pin 11B is drawn downward and comes into contact with the tread surface of the large wheel 10D to stop its rotation, and when the pressing on the brake arm 11A is released, the return spring 11I causes Brake arm returns to its original position
Since the brake pin is also separated from the large wheel, the wheelchair can be moved safely.

[Brief description of drawings]

FIG. 1 is an overall perspective view.

FIG. 2 is a perspective view mainly illustrating a frame.

FIG. 3 is a perspective view mainly illustrating a frame and a connecting frame.

FIG. 4 is a perspective view mainly illustrating a frame and a wheel portion.

FIG. 5 is a perspective view mainly illustrating a frame and a brake unit.

FIG. 6 is a schematic plan view illustrating the action of reducing and enlarging the frame width.

FIG. 7 is a schematic side view illustrating the operation of the wheel portion.

FIG. 8 is an enlarged side view in which a part of the lock portion of the armrest is cut away.

FIG. 9 is an enlarged vertical sectional view of a knob portion of the lever.

FIG. 10 is a schematic side view illustrating the operation of a brake unit.

FIG. 11 is an explanatory view showing an enlarged main part of the above from the opposite side.

[Explanation of symbols] 1 wheelchair 2 frame 3, 4 frame body 5 connecting frame 6 lever 7, 8 caster small wheel 9 seat 10 wheel part 11 brake part

Claims (1)

[Claims] 1. Left and right flakes constituting a frame (2)
The body (3, 4) is a horizontal upper and lower pipe (3A, 4A)
And the vertical pipes (3
B, 4B) are configured in a rectangular shape on the side, and this frame (2)
The front upper edge of the front is configured to be lower toward the front
Tilt frames (3C, 4C) are installed in series, and this tilt frame
A foot stand (3D, 4D) is detachably attached to the tip of the boom
And the rear part of the frame (2) has a substantially U-shaped side surface.
The rear frames (3E, 4E) are projected upward,
In addition, one pipe (5A) and the other pipe (5B)
Connection frame configured by connecting in a plane X shape with vertical pins (5C)
The tip of one pipe (5A) in (5) is the right flare.
Slidably connected to the lower pipe (4A) of the boom body (4)
And the rear end of one pipe (5A) is connected to the left flare.
Freely rotatable to the rear vertical pipe (3B) in the boom body (3)
And the tip of the other pipe (5B) is connected to the left flare.
Slidably connected to the lower pipe (3A) of the body (3)
And the rear end of the other pipe (5B) has the right flare.
Rotate freely to the rear vertical pipe (4B) in the body (4)
Are connected, and the inner ends are connected by the front and rear pins (6A)
To the lever (6) consisting of left and right stays (6B, 6C)
The outer end of the left stay (6B) is the left frame body.
Freely rotatable with respect to the rear vertical pipe (3B) in (3)
And the outer end of the right stay (6C) is connected to the right
For the rear vertical pipe (4B) in the frame body (4)
Is rotatably connected and is located on the lower front surface of the frame (2).
Castor small wheels via fixed-size legs (7A, 8A)
(7, 8) are attached, the left and right frame bodies (3, 4)
Seated with cloth stretched between the upper pipes (3A, 4A) in
A seat (9) is constructed between the rear frames (3E, 4E)
The stretched cloth constitutes the backrest (9A),
Wheel part (10) arranged outside the ram body (3, 4)
Is the upper pipe (3) in the left and right frame bodies (3, 4).
(A, 4A) near the rear end of the frame and
The pin (10A) in the intersecting direction supports it so that it can swing back and forth.
The held axle arm (10B) and the outside of this axle arm
Axle (10C) protruding outward at the lower end of the direction, and
Well-known large wheel (10D) rotatably attached to the axle
And an elbow hook that swings this axle arm back and forth.
This armrest (10E)
The pipe is constructed in a sideways inverted U shape.
The rear end is an upper pipe in the left and right frame bodies (3, 4)
Pins (10A) parallel to (3A, 4A)
F), the lower arm rest and the axle arm (10
In B) almost the center is the first link (10G),
Connected via 2 links (10H), front end of armrest
The left and right frame bodies (3, 3) through the lock portion (10I).
Small projecting on the front vertical pipe (3B, 4B) in 4)
It is configured to engage with and disengage from the rod-shaped protrusion (10J).
The hook portion (10I) is orthogonal to the end surface of the armrest (10E)
The horizontal pipe (10I1) fixed in a certain direction and this
U-shaped receiving part (10I2) opened at the end of the horizontal pipe
And, with a coil spring in the horizontal pipe (10I1),
It is composed of a pressure rod (10I3) acting in the direction of the receiving part.
And the brackets arranged outside the left and right frame bodies (3, 4).
The rake part (11) is attached to the left and right frame bodies (3, 4).
A fulcrum provided almost in the center of the lower pipe (3A, 4A)
Brake arm (11A) pivotally attached to the left and right frames
Rear frame (3E, 4E) side of body (3, 4)
Large wheel (10D) tread surface direction on the fulcrum provided on the
First brake pin (11B) that is provided so that it can be undulated
And the lower pipes (3) in the left and right frame bodies (3, 4)
A, 4A) The first brake gear pivotally attached to the fulcrum
Arm (11C) and the lower end of this first brake arm
The worn brake rod (11D) and this brake lock
The second brake arm (11E) pivotally attached to the rear end of the do
The brake rod (1
1F) is pivotally attached to the first brake pin (11B).
The brake arm (11A) and the first brake arm
A wheelchair characterized by being connected to (11C) by an arm (11G) .