JPH08317952A - Wheelchair and its carrier - Google Patents

Abstract

PURPOSE: To provide a wheelchair in which the seat height is variable and in which a user is protected from soiling his sleeves with the wheel. CONSTITUTION: A rocking frame 18 is pivotally supported at the upper end of a post 12 erected in the rear of a main frame 5; and a seat 28 is mounted on a seat frame 29 supported at the tip end of that rocking frame 18. With the rocking frame 18 rocked vertically by a hydraulic cylinder 25, the seat 28 is raised and lowered with a horizontal posture maintained by a parallel link mechanism 35. The left and right travelling handles 38 installed on the seat frame 29 are connected to driving wheels 8 through a power transmitting means 85 that is provided with an endless cog belt 41, 43. The travelling handles 38 being positioned away from the driving wheels 8, the sleeves of the user's clothes are not soiled by coming into contact with the driving wheels 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair capable of adjusting the height of a seat and a wheelchair transport vehicle for transporting this wheelchair.

[0002]

2. Description of the Related Art A conventional wheelchair that does not have a drive source for traveling such as an electric motor is designed to be driven by an occupant who pushes and rotates a wheel-shaped traveling handle fixed to the left and right wheels coaxially with both hands. There is. Moreover, the thing which made the height of the seat of the wheelchair adjustable is real Kaihei 6-68742.
JP-A-57-93055, JP-A-57-9
3320 publication.

[0003]

By the way, in the above-mentioned conventional wheelchair, not only is the sleeve of the clothes touching the wheels and getting dirty when the occupant pushes the traveling handle, but also when the height of the seat is adjusted. There is a problem that the positional relationship between the occupant's hand and the traveling handle changes, which makes operation difficult.

The present invention has been made in view of the above-mentioned circumstances, and in a wheelchair capable of adjusting the height of the seat, the clothes of the occupant are prevented from being soiled due to contact with the wheels, and the seat The purpose of the present invention is to allow the traveling handle to be easily operated regardless of the height. Another object of the present invention is to provide a wheelchair-carrying vehicle that allows an occupant to carry the wheelchair while sitting.

[0005]

In order to achieve the above-mentioned object, the invention described in claim 1 is such that a main frame having wheels and a base end are swingable to the main frame via a base end side pivot shaft. A swing frame that is pivotally supported on the seat, a seat frame that is swingably supported on the tip of the swing frame through a tip-side pivot, and that supports a seat on which an occupant sits, and a swing frame that serves as a base. Lifting means for vertically swinging about the end-side pivot, parallel link mechanism for holding the seat frame in a horizontal posture, traveling handle rotatably supported on the tip-side pivot, and rotation of the traveling handle for the wheels. And a power transmission means for transmitting the power to the vehicle.

In addition to the structure of claim 1, the invention described in claim 2 is characterized in that the power transmission means transmits the rotation of the pair of left and right traveling handles to the pair of left and right wheels, respectively. To do.

According to a third aspect of the present invention, in addition to the structure of the first aspect, the power transmission means includes a first rotating body which is axially supported by the base end side pivot shaft coaxially with the traveling handle. ,
A second rotary body having the same diameter as that of the first rotary body and pivotally supported by the tip end side pivot shaft; and an endless transmission element wound around the first rotary body and the second rotary body. The running handle can be fixed to the seat frame.

According to the invention described in claim 4, in addition to the structure of claim 1, the elevating means is driven by an armrest pivotally supported by a seat frame so as to be vertically swingable, and the swinging of the armrest. And a hydraulic cylinder that is connected to the hydraulic pump and drives the swing frame.

In addition to the structure of claim 1, the invention according to claim 5 is characterized in that a footrest for supporting the foot of an occupant sitting on the seat is removably provided in the seat frame.

The invention described in claim 6 is a wheelchair-carrying vehicle for transporting the wheelchair according to claim 1, which comprises a luggage box having an opening on the rear surface which is opened and closed by a door, and a floor of the luggage box. It is laid and can extend rearward from the opening,
A guide rail for supporting a seat frame of a wheelchair is provided.

[0011]

According to the structure of the first aspect, when the rocking frame is vertically rocked about the base end side pivot by the elevating means, the seat frame pivotally supported by the tip of the rocking frame via the tip end side pivot is formed. The parallel link mechanism moves up and down while maintaining a horizontal posture. When an occupant sitting on the seat rotates the traveling handle, the wheels rotate via the power transmission means and the wheelchair travels.

According to the structure of claim 2, the pair of left and right traveling handles are independently rotated, whereby the rotational speeds of the pair of left and right wheels can be independently changed to steer the wheelchair left and right.

According to the third aspect of the invention, since the diameter of the first rotating body and the diameter of the second rotating body are set equal to each other, even if the swing frame is swung up and down while the wheelchair is stopped, The handle does not rotate. Therefore, even when the traveling handle is fixed to the seat frame and the wheels are locked, the swing frame can be swung up and down to move the seat up and down.

According to the structure of claim 4, when the occupant sitting on the seat swings the armrest up and down, the hydraulic pump operates, and the swing frame is driven by the oil discharged from the hydraulic pump.

According to the structure of claim 5, the footrest can be pulled out from the seat frame and used when an occupant sits on the seat.

According to the structure of claim 6, after opening the door of the luggage box and pulling out the guide rail from the opening to support the seat frame of the wheelchair on the guide rail, the elevating means is operated to move the main frame to the ground. Lift from. Then, the wheelchair can be loaded in the luggage box by moving the seat frame along the guide rails.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 16 show an embodiment of the present invention. FIG. 1 is an overall side view of a wheelchair, and FIG. 2 is 2-2 of FIG.
A line enlarged arrow view, FIG. 3 is a line 3-3 line enlarged arrow view of FIG. 1, and FIG.
4 is an enlarged view in the four directions of FIG. 1, FIG. 5 is a view taken along the line 5-5 of FIG. 2, FIG. 6 is a sectional view taken along the line 6-6 of FIG. 5, and FIG.
FIG. 8 is an enlarged view taken along line 8 in FIG. 7, FIG. 9 is an enlarged sectional view taken along line 9-9 in FIG. 7, and FIG.
11 is a hydraulic circuit diagram, FIG. 12 is an operation explanation diagram,
FIG. 13 is an overall side view of a wheelchair transport vehicle, and FIGS.
FIG.

As shown in FIGS. 1 to 5, the wheelchair WC has two
A main frame 5 formed by welding together a vertical member 1, 1 of a book, two lateral members 2, 3 and a reinforcing member 4 of a book.
Is provided. Left and right axles 7, 7 are rotatably supported on the rear upper surfaces of the left and right vertical members 1, 1 of the main frame 5 via bearings 6, 6, and the left and right drive wheels 8, 8 are supported on the axles 7, 7. Are fixed respectively. Left and right caster wheels 10 and 10 are supported by brackets 9 and 9 at the front ends of the left and right vertical members 1 and 1 of the main frame 5, and an assistant is provided at the rear ends of the left and right vertical members 1 and 1. Auxiliary handles 11, 11 for pushing the wheelchair WC are erected.

The main frame 5 has a post 12 provided upright on the rear portion thereof. The post 12 is the reinforcing member 4
A pair of left and right brackets 13, 13 having an L-shaped cross section, which are bolted to each other, and a pair of left and right plate-shaped brackets 14, which are bolted to the brackets 13 and 13 and extend rearward,
14, a lateral member 15 welded so as to connect opposing surfaces of both brackets 14, 14, and both brackets 14, 14
A pair of left and right support columns 16 and 16 which are bolted to the rear end and rise upward are provided.

A pair of left and right base end side pivots 17, 17 are fixed to the upper ends of the posts 16, 16 of the post 12. The oscillating frame 18, which is pivotally supported on the proximal-side pivots 17 and 17 so as to be vertically swingable, includes a pair of left and right vertical members 19 and 19 bolted in series at an intermediate portion, and rear vertical members 19 and 19. Two lateral members 20, 21 connecting the end portions and the intermediate portions, and a pair of left and right vertical members 22, connecting the two lateral members 20, 21.
And 22. A pin 23 provided between the vertical members 22 and 22 and a pin 24 provided on the rear surface of the horizontal member 15 are connected by a single-acting hydraulic cylinder 25, and the pin 23 is provided on the rear surface of the horizontal member 15. Pin 26, 26
And are connected by a pair of left and right gas springs 27, 27.

Therefore, when hydraulic oil is supplied to the hydraulic cylinder 25 to extend the hydraulic cylinder 25, the swing frame 18 moves to the base end side pivot shaft 17,
By swinging upward around 17 and supporting the weight of the swing frame 18 by the gas springs 27, 27, the load on the hydraulic cylinder 25 is reduced. Further, when the hydraulic oil is discharged from the hydraulic cylinder 25, the hydraulic cylinder 25 contracts due to the weight of the swing frame 18, and the swing frame 18 swings downward around the base end side pivots 17, 17.

Left and right vertical members 19, 1 of the swing frame 18
Left and right pair of tip side pivots 34, 34 fixed to the tip of
A seat frame 29 that supports a seat 28 on which an occupant sits is pivotally supported. The seat frame 29 includes a U-shaped seat frame main body 30 that is open upward in a front view, and a pair of left and right seat support members 31 and 31 fixed to the bottom surface of the seat frame main body 30 in the front-rear direction. On the lower surfaces of the left and right seat supporting members 31, 31, two grounding members 32 ... Grounding when the seat frame 29 is lowered are provided. Further, stopper bolts 33, 33 that can come into contact with the rear surface of the seat frame body 30 are provided on the front surface of the lateral member 3 of the main frame 5 so as to regulate the descending end of the seat frame 29 (see FIG. 5).

The post 12 and the seat frame 29 are connected via a parallel link mechanism 35 so that the seat frame 29 can be raised and lowered while maintaining a horizontal posture even when the swing frame 18 swings up and down. That is, the posts 16 and 16 of the post 12
The upper positions of the base end side pivots 17 and 17 in and the upper positions of the tip end side pivots 34 and 34 in the seat frame 29 are connected by links 36 and 36, and the swing frame 18, the links 36 and 36, The columns 16, 16 and the seat frame 29 constitute a parallel link mechanism 35.

Next, the structure of the power transmission means 85 will be described with reference to FIG.

Ring-shaped running handles 38, 38 and first pulleys 39, 39 are respectively provided at the outer and inner ends of the pair of left and right sleeves 37, 37 rotatably fitted to the outer circumferences of the tip end side pivots 34, 34. Is fixed. The first pulley 39,
Reference numeral 39 denotes a second pulley 40, 40 supported on the outer circumference of the proximal side pivots 17, 17 so as to be rotatable relative to the first endless cog belt 4.
The first pulley 4 and the second pulley 4
0 and 40 are third pulleys 42 fixed to the axles 7 and 7,
42 via the second endless cog belts 43, 43.

The diameters of the first pulleys 39 and 39 and the diameters of the second pulleys 40 and 40 are set to be equal, and the diameter of the third pulley
The diameters of the pulleys 42, 42 are the first and second pulleys 39, 3
It is set larger than the diameter of 9, 40, 40.
The running handles 38, 38 are the seat frame body 3
0, that is, the base end side pivots 34, 34 fixed to the seat frame main body 30 can be non-rotatably locked via a lock mechanism (not shown).

Next, referring to FIGS. 4 and 10, the seat 2
The footrest 44 that supports the feet of an occupant sitting on the seat 8 will be described.

The footrest 44 is the seat frame 29.
It is movable between a storage position stored between the left and right seat support members 31, 31 and a use position pulled out from the storage position. A spacer 4 is provided on the upper surface of each sheet supporting member 31.
5, the pressing plate 46, and the seat mounting bracket 47 are superposed and fastened together with bolts 48. Seat support members 31, 31, spacers 45, 45 and pressing plates 46, 4
The left and right edges of the plate-like slider 49 are slidably supported in the groove portion surrounded by 6.

At the center of the front part of the slider 49, one first rod 50 is pivotally supported by a pin 51 so as to be vertically swingable.
Further, two second rods 5 are provided on the left and right of the rear portion of the slider 49.
2, 52 are pivotally supported by pins 53, 53 so as to be vertically swingable. Each second rod 52 is a pin 53 and a slider 49.
A base end portion 54 pivotally supported on the base end portion, a screw rod 55 fixed to the tip end of the base end portion 54, a tip end portion 56 into which the screw rod 55 is slidably fitted, and a tip end that is screwed into the screw rod 55. And a stopper nut 57 that abuts against the portion 56.

A support shaft 58 is fixed to the tip of the first rod 50, and two second rods 52, 52 are attached to the support shaft 58.
While the tip of the is pivotally supported, step 5
The sleeves 60, 60 welded to each other are fitted rotatably. Pins 61, 61 which is embedded in the support shaft 58 are fitted in the long holes 60 _1, 60 ₁ was engraved on the sleeve 60, 60, pins 61, 61 and the long hole 60 _1, 60 ₁ at both ends and the Due to the contact, the turning ends of the steps 59, 59 are regulated.

A pair of left and right guide pins 62, 62 for supporting the lower surfaces of the second rods 52, 52 when the footrest 44 is stored are welded to the lower surfaces of the seat supporting members 31, 31. Further, a pair of left and right stopper bolts 63, 63 are provided at the tips of the seat supporting members 31, 31 to prevent the slider 48 from falling forward when the footrest 44 is used.

Next, the elevating means 86 for driving the hydraulic cylinder 25 will be described with reference to FIGS.

A pair of left and right brackets 64, 64 fixed to the upper end of the seat frame body 30 is rotatably supported by a support shaft 67 connecting the base ends of the left and right armrests 65, 65 via connecting members 66, 66. Be pivoted. A reciprocating hydraulic pump 69 (see FIG. 11) is housed inside a pump unit 68 provided on the upper surface of the seat frame body 30, and a U-shape provided on the upper end of a drive rod 70 connected to the hydraulic pump 69. -Shaped locking member 71 is the pump unit 6
8 to the upper surface.

An arm 72 fixed to the support shaft 67 and an arm 74 pivotally supported on the upper surface of the pump unit 68 via a pin 73 are provided at both ends of two links 75, 75 arranged in parallel. Pivoted through 77. Link 7
The pins 77 provided at the lower ends of the drive rods 5, 75
It engages with the locking member 71 provided at the upper end of 0.

When the occupant sitting on the seat 28 swings the armrests 65, 65 up and down with both hands, the support shaft 6
The rotation of 7 causes the arm 72, the links 75, 75 and the arm 7 to rotate.
4 and the locking member 71 is pushed and pulled by the pin 77. As a result, the drive rod 70 reciprocates to drive the hydraulic pump 69.

Next, the hydraulic circuit of the elevating means 86 will be described with reference to FIG.

The hydraulic oil pumped up by the hydraulic pump 69 from the oil tank 78 is supplied to the hydraulic cylinder 25 via the first one-way valve 79 and the second one-way valve 80. A variable throttle 81 is connected in parallel to the second one-way valve 80. A relief valve 82 and a release valve 84 that opens by operating a lever 83 are connected in parallel between an oil passage between the first one-way valve 79 and the second one-way valve 80 and the oil tank 78.
The lever 83 extends to the outside from the side wall of the pump unit 68 and can be operated by an occupant sitting on the seat 28.

Next, the vehicle V that carries the wheelchair WC will be described with reference to FIG.

The van type vehicle V has a door 92 at the rear of the luggage box 91.
An opening 93 that is opened and closed by A pair of left and right guide rails 95, 95 are laid on the floor 94 of the luggage box 91, and the guide rails 95, 95 can be pulled out so as to extend rearward from the opening 93. Further, a concave portion 96 for accommodating the foot of an occupant sitting on the wheelchair WC is formed in the front portion of the floor 94.

Next, the operation of the embodiment of the present invention having the above construction will be described.

When an occupant sitting on the seat 28 rotates the traveling handles 38, 38 with both hands, the traveling handle 3
The rotation of the first pulleys 39, 39 integrated with 8, 38 is via the first endless cog belts 41, 41, the second pulleys 40, 40 and the second endless cog belts 43, 43.
8 is transmitted and the wheelchair WC runs. By rotating the left and right running handles 38, 38 at different speeds, the left and right drive wheels 8, 8 rotate at different speeds, and the wheelchair WC can be steered freely. The running handles 38, 3
Since 8 is provided at a position distant from the drive wheels 8 and 8, the sleeve of the occupant's clothes does not come into contact with the drive wheels 8 and 8 and become dirty.

When the hydraulic pump 69 is operated by vertically swinging the armrests 65, 65 to raise the seating surface of the seat 28, the hydraulic fluid discharged from the hydraulic pump 69 in FIG. 2 The hydraulic cylinder 25 is extended through the one-way valve 80. As a result, the swing frame 1
8 swings upward about the pivots 17 on the base end side, and the seat frame 29 supported at the tip of the swing frame 18 rises together with the seat 28. At this time, the surplus hydraulic oil is returned to the oil tank 78 via the relief valve 82.

The lever 83 is used to lower the seat surface of the seat 28.
Is operated to open the release valve 84, the hydraulic oil pushed out from the hydraulic cylinder 25 urged in the contraction direction by the weight of the occupant causes the first one-way valve 79 and the second one-way valve 8 to move.
It is blocked by 0, passes through the variable throttle 81, passes through the release valve 84, and is discharged to the oil tank 78. At this time, by adjusting the opening degree of the variable aperture 81, the descending speed of the seat 28 can be arbitrarily changed.

When adjusting the height of the seating surface of the seat 28 as described above, the seat frame 29 is connected to the post 12 through the parallel link mechanism 35, and therefore, as shown in FIG.
As shown in, the seat 28 can be raised and lowered while being kept in a horizontal posture.

In this embodiment, the hydraulic cylinder 25 is a single-acting type, and the seat 28 is raised by the hydraulic pump 69 and lowered by gravity. Hydraulic pump 69 and hydraulic cylinder 2
By installing a switching valve in the oil passage between the five, seat 28
Both rising and lowering may be performed by hydraulic pressure.

By the way, since the diameters of the first pulleys 39, 39 and the second pulleys 40, 40 of the power transmission means 85 are set equal to each other, the swing frame 18 is swung up and down so that the seat 28 is seated. Even if the height of the surface is adjusted, the traveling handles 38, 38 do not rotate with respect to the seat frame 29. Therefore, even when the wheelchair WC is braked by non-rotatably fixing the running handles 38, 38 to the seat frame 29 by a lock mechanism (not shown), the seat height of the seat 28 can be adjusted without any trouble. .

Further, even if the height of the seat surface of the seat 28 is adjusted, the positional relationship between the seat 28 and the traveling handles 38, 38 does not change, so that traveling of the wheelchair WC is not hindered. .

As shown in FIG. 10, when the footrest 44 is pulled out to the use position, a pulling force acts on the first rod 50 by the downward load acting on the steps 59, 59, and the second rods 52, 52. Is subject to compressive force.
As a result, the tips 56, 56 of the second rods 52, 52 come into contact with the stopper nuts 57, 57, and the steps 59, 5
The fall of 9 is blocked. The height of the steps 59 and 59 is the same as that of the stopper nuts 57 and 5 for the screw rods 55 and 55.
It can be changed by adjusting the position of 7.

In order to store the footrest 44, first, the steps 59, 59 are rotated in the direction of arrow A in FIG. 10 to the chain line position in the circle, and then the first rod 50 and the second rods 52, 52 are moved by the arrows. Rotate in the B direction. At this time, while the first rod 50 has a constant length, the second rod 5
The screw rods 55 and 55 of the rods 2 and 52 are extended by being pulled out from the tip portions 56 and 56, so that the first rod 50 and the second rods 52 and 52 can rotate to a horizontal position where they overlap each other in a side view. .

When the first rod 50 and the second rods 52, 52 are pushed in the direction of arrow C from this state, the slider 49
Slides between the left and right seat support members 31, 31, and the first rod 50 and the second rods 52, 52 are stored on the lower surface of the seat 28. At this time, since the lower surfaces of the second rods 52, 52 are supported by the left and right guide pins 62, 62, the footrest 44 is stably stored without dropping.

Next, referring to FIGS. 13 to 16, the wheelchair W
A procedure for mounting C on the vehicle V will be described. In the wheelchair WC in this case, the hydraulic pump 69 is required to raise and lower the seat 28.

First, as shown in FIG. 13, the door 9 of the vehicle V
2 and open the guide rail 9 from the opening 93 of the packing box 91.
Pull out 5,95 backwards. Then, as shown in FIG. 14, after moving the wheelchair WC to position the seat frame 29 above the guide rails 95, 95, the lifting means 8 is moved.
6 is operated to lower the seat frame 29 by the hydraulic pump 69 and the hydraulic cylinder 25, thereby supporting the grounding members 32 ... Provided on the lower surfaces of the seat supporting members 31, 31 of the seat frame 29 on the guide rails 95, 95. .

When the seat frame 29 is further lowered by the hydraulic pump 69 and the hydraulic cylinder 25 by operating the elevating means 86, the seat frame 29 is guided by the guide rails 95, 95.
Since the main frame 5 cannot be lowered while being supported by the main frame 5, the main frame 5 rises apart from the ground and enters the state shown in FIG. From this state, as shown in FIG. 16, the guide rail 9
After the wheelchair WC is advanced into the passenger compartment 91 along the directions 5, 5 and fixed to the floor 94 by a fixing means (not shown), the guide rails 95, 95 are stored in their original positions. The occupant of the wheelchair WC can put his / her foot on the recess 96 of the floor 94 and can sit in a comfortable posture.

Thus, the occupant can be carried by the vehicle V while sitting on the wheelchair WC without providing a lift device for raising and lowering the wheelchair WC of the vehicle V.
Further, since the seat 28 of the wheelchair WC mounted on the vehicle V is lowered to the lowest position, the eyes of the occupant of the wheelchair WC and the eyes of other occupants can be made to substantially coincide with each other in height.

The procedure for lowering the wheelchair WC from the vehicle V is the reverse of the procedure for loading the wheelchair.

Although the embodiments of the present invention have been described in detail above, the present invention can be modified in various ways without departing from the scope of the invention.

For example, the pulley 39 of the power transmission means 85,
Instead of 40, 42 and endless cog belts 41, 43, sprockets and chains can be used. Further, the ground support members 32 on the lower surfaces of the sheet supporting members 31, 31 ...
If a roller with a small diameter is provided instead of the wheelchair W
C can be moved into the passenger compartment 91.

[0059]

As described above, according to the invention described in claim 1, when the height of the seat is adjusted by vertically swinging the swing frame by the elevating means, the seat is always moved by the parallel link mechanism. Can be maintained in a horizontal position. When the occupant rotates the traveling handle provided on the seat frame side, the wheels rotate and the wheelchair travels, so the dirt on the wheels does not stain the occupant's clothes and regardless of the seat height. The traveling handle can be easily rotated.

According to the invention described in claim 2,
By driving the pair of left and right wheels respectively with the pair of left and right traveling handles, the wheelchair can be steered by independently changing the rotational speeds of the left and right wheels.

According to the invention described in claim 3,
Even if the steering handle is fixed to the seat frame and the wheels are locked, the height of the seat can be adjusted by vertically swinging the elevating frame without any trouble.

According to the invention described in claim 4,
Since the armrest is swung up and down and the hydraulic cylinder is operated by the hydraulic pump, the height of the seat can be manually adjusted.

According to the invention described in claim 5,
You can easily get on and off the wheelchair by pulling out the footrest from the seat frame.

According to the invention described in claim 6,
Since the wheelchair can be lifted to the height of the luggage box by using the lifting means provided in the wheelchair, it is not necessary to provide a special lift device on the vehicle side. Moreover, since the seat of the wheelchair is lowered while the seat is mounted on the vehicle, the eyes of an occupant sitting on the seat can be made substantially at the same height as the eyes of other occupants.

[Brief description of drawings]

[Figure 1] Overall side view of wheelchair

FIG. 2 is an enlarged arrow view taken along line 2-2 of FIG.

FIG. 3 is an enlarged arrow view taken along line 3-3 of FIG.

FIG. 4 is an enlarged view in the four directions of FIG.

5 is a view taken along line 5-5 of FIG.

6 is a sectional view taken along line 6-6 of FIG.

7 is an enlarged arrow view taken along line 7-7 of FIG.

FIG. 8 is an enlarged view in the direction of arrow 8 in FIG.

9 is an enlarged sectional view taken along line 9-9 of FIG.

10 is a view taken along the line 10-10 of FIG.

[Fig. 11] Hydraulic circuit diagram

FIG. 12 is an operation explanatory diagram

[Fig. 13] Side view of the entire wheelchair transport vehicle

FIG. 14 is an operation explanatory diagram

FIG. 15 is an explanatory diagram of operation

FIG. 16 is an operation explanatory diagram

[Explanation of symbols]

 5 Main Frame 8 Drive Wheels (Wheels) 17 Base End Side Axis 18 Swing Frame 25 Hydraulic Cylinder 28 Seat 29 Seat Frame 34 Tip Side Axis 35 Parallel Link Mechanism 38 Travel Handle 39 First Pulley (First Rotating Body) 40 Number 2 pulleys (2nd rotating body) 41 1st endless cog belt (endless transmission member) 44 footrest 65 armrest 69 hydraulic pump 85 power transmission means 86 lifting means 91 packing box 92 door 93 opening 94 floor 95 guide rail WC wheelchair

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B62B 3/06 B62B 3/06 A

Claims (6)

[Claims] 1. A main frame (5) having wheels (8), and a swing frame (18) whose base end is swingably supported by the main frame (5) via a base side pivot (17). ), And a seat frame (29) pivotally supported by the tip of the swing frame (18) via a tip-side pivot shaft (34) and supporting a seat (28) on which an occupant sits, Elevating means (86) for vertically swinging the swing frame (18) around the proximal side pivot (17), a parallel link mechanism (35) for holding the seat frame (29) in a horizontal posture, and the tip side pivot. A traveling handle (38) rotatably supported by (34), and a power transmission means (85) for transmitting the rotation of the traveling handle (38) to the wheels (8). Wheelchair to do. 2. The power transmission means (85) transmits the rotation of the pair of left and right traveling handles (38) to the pair of left and right wheels (8), respectively.
Wheelchair listed. 3. A first rotating body (39) in which the power transmission means (85) is axially supported on the base end side pivot shaft (17) coaxially with a traveling handle (38), and a first rotating body (39). 39) The second rotating body (40) having the same diameter as that of the first rotating body (39) and having the same diameter as that of the first rotating body (39) and the second rotating body (40). Wheelchair according to claim 1, characterized in that it comprises an endless transmission element (41), the running handle (38) being fixable to a seat frame (29). 4. An armrest (65) in which the elevating means (86) is pivotally supported by a seat frame (29) so as to be vertically swingable, and a hydraulic pump (69) driven by swinging of the armrest (65). Wheelchair according to claim 1, characterized in that it comprises a hydraulic cylinder (25) connected to a hydraulic pump (69) to drive the rocking frame (18). 5. A footrest (44) for supporting the foot of an occupant sitting on the seat (28) is provided with a seat frame (29).
The wheelchair according to claim 1, wherein the wheelchair is provided so as to be retractable. 6. A wheelchair-carrying vehicle for carrying the wheelchair (WC) according to claim 1, wherein a luggage box (91) having an opening (93) on a rear surface thereof which is opened and closed by a door (92), and a luggage box. It is laid on the floor (94) of (91) and can extend rearward from the opening (93),
A wheelchair transport vehicle comprising a guide rail (95) for supporting a seat frame (29) of the wheelchair (WC).