JP2756637B2 - Electric wheelchair lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the construction of entrances and exits of parks, government offices, government offices, and other steps, steps, and stairs. The present invention relates to a motorized wheelchair elevating device that enables a weak person to use a wheelchair to move up and down.

[0002]

2. Description of the Related Art Conventionally, a stairway is provided from a road to enter or exit a park on a hill or a slightly lowland, or a public office,
In government offices, many stairs and steps are provided at roads, carriageways, between the public square in front of the government building and the government building, or at the entrance to the building, or other public or general places and buildings There are numerous stairs and steps at the inside of the connecting path, at the entrance and exit.

[0003] In addition to the above, when climbing up and down stairs, it is difficult to walk on their own and vulnerable people who use self-help equipment need nursing care. Because the stairs cannot be moved up and down and it is difficult to use various facilities or go out everyday, slopes have come to be installed in large stairs, but installation of such slopes requires enormous cost, man-hours, The installation location was limited because of the number of days required.

[0004]

SUMMARY OF THE INVENTION The present invention relates to an electric wheelchair which enables a user of an electric wheelchair, who has difficulty walking by himself, to easily move up and down a step or a height difference between a road and a park. is to St. provide a lifting device.

[0005]

SUMMARY OF THE INVENTION The present invention has been developed in view of the above-mentioned conventional technology, in view of the problem that climbing facilities such as slopes are inadequate and it is difficult for a socially weak person to use various facilities. In addition to laying an elevator track with a rack at the same time, providing a stairway itself, rehabilitation of the stairs itself, providing a high-elevation hoistway that does not require large civil works, and attaching a pinion to the wheel of the electric wheelchair to engage with the rack of the elevator track. By doing so, the pinion of the wheelchair engages with the rack of the elevating track,
This engagement solves the above-mentioned problem by causing the wheelchair to be in a floating state and to move up and down the stairs using the lift track by the driving force of the electric motor.

[0006] Further, by providing the above-described ascending and descending facilities and an electric wheelchair capable of ascending and descending, it is easy for people in need of nursing care to use facilities with a height difference and it is difficult to walk on their own. It is intended to make it easy for even the most casual people to go out and contribute to the development of a welfare society.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes an electric wheelchair according to the present invention. The wheelchair 1 travels not only on flat ground, but also on an inclined slope and a lift track 2 to be described later. To go up and down.

Reference numeral 3 denotes a bogie portion of the wheelchair 1, and the bogie portion 3
The front part 4 is slightly inclined upward to mount the front wheel part 5, the rear part 6 of the bogie part 3 is mounted with the rear wheel part 7, and the middle of the bogie part 3 between the front wheel part 5 and the rear wheel part 7. A seat 9 is provided above the part 8 to form a wheelchair 1 of a basic form.

Reference numeral 10 denotes a vertical shaft bearing provided above the front part 4 of the bogie unit 3. A lower end of a transmission shaft 11 rotatably mounted on the bearing 10 is provided on a lower surface of the front part 4 with a pair of support plates. 12, 12
a, a front wheel 14 is rotatably mounted on the lower end of the support plates 12 and 12a via a rotary shaft 13, and a circular shape is mounted on an upper end of the transmission shaft 11 via a shaft 15 and a base shaft 16. Handle 17
Is provided.

Reference numeral 18 denotes an inclined frame 19 on the upper part of the rear part 6 of the bogie unit 3,
A horizontal pedestal provided through the pedestal 19a is provided near the horizontal pedestal 18, the inclined frames 19 and 19a, and the rear portion 6 of the carriage 3.
The drive shaft 21 is rotatably disposed on a rear extension line of the rear portion 6 of the bogie unit 3, and a pair of rear wheels 22, 22 a are mounted on both ends of the drive shaft 21.

Reference numeral 23 denotes a motor provided below the horizontal pedestal 18, and a driving gear mounted on a motor shaft 24 of the motor 23.
Driven gear 25 attached to drive shaft 21 other than rear wheels 22, 22a
26, the rear wheels 22, 22a are electrically driven, and a pair of pinions 27, 27
is mounted, and the lower teeth 28 of the pinions 27, 27a are inclined inward.

A rechargeable battery 29 is disposed in front of the motor 23 and on the rear part 6 of the bogie unit 3.

A pair of disk-shaped first guide wheels 31, 31a which are horizontally rotatable and are rotatable via mounting shafts 30, 30a are mounted on the rear portion 6 of the bogie portion 3 and the central portion of the lower surface of the intermediate portion 8. Along with
At an intermediate portion in the front-rear direction of the pair of first guide wheels 31, 31a,
The holding plates 32 and 32a are fixed to the outer sides of the lower surface of the bogie unit 3 in a hanging manner.
A pair of second guide wheels 34, 34a are rotatably mounted via 3, 33a.

Numeral 40 designates a seat installed on the intermediate portion 8 of the carriage 3 and the horizontal pedestal 18. The front support 41 is provided on the upper surface of the intermediate portion 8 of the carriage 3 so as to be swingable. A rear mounting seat 42 which is a rear support fixed on the seat 18, and a seat 40
Plates 43, 43a and hinge shafts 44, 44a provided on the lower surface of
, The seat 40 is swingably mounted above the bogie unit 3.

The front support portion 41 is mainly composed of a hydraulic cylinder 46 on which a hydropump 45 is mounted, and a lower end of the hydraulic cylinder 46 is provided on a hinge plate 47 provided on the intermediate portion 8 of the carriage 3.
The hydraulic cylinder 46 is swingably mounted via a hinge shaft 48, and a rod 49 of the hydraulic cylinder 46 is provided with a bearing 50 at the end thereof, so that the hinge shafts 44, 44a of the hinge plates 43, 43a provided on the lower surface of the seat 40 are supported.
50, the hydraulic cylinder 46 of the front support part 41 and the seat
40 is swingably connected.

The hydraulic pump 45 mounted on the hydraulic cylinder 46 has a function of acting on the hydraulic cylinder 46 when the bogie unit 3 is inclined. In, dolly part 3, seat 4
0, the rod 49 of the hydraulic cylinder 46 is automatically expanded and contracted by sensing the inclination of the hydro pump 45 and the hydraulic cylinder 46.

Next, the elevating track 2 on which the electric wheelchair 1 travels will be described. Reference numeral 60 denotes existing stairs provided in various facilities.
And the high altitude part 62, and the foot part 63 at a predetermined position of the stair part 60,
63a… Provide the footrests 64, 64a… on the top
It is erected above 63, 63a ...

Reference numeral 66 denotes an upper opening of the track portion 65, which is an inverted gate type main track. The main track 66 comprises a bottom portion 67 and both side walls 68, 68a, and has a groove formed in a pair of side walls 68, 68a. A guide space 69 is formed, and the bottom 67 of the main track 66 is provided on the footrests 64, 64a,.
0, 70a, etc.

Reference numerals 71 and 71a denote side walls 68 and 68a of the main track 66.
The racks 72, 72a are provided on the upper outer surface of the projecting portions 71, 71a, and the projecting portions 7
The lower surfaces of 1, 71a are formed as guide rails 73, 73a.

The racks 72, 72a and the guide rails 73, 73a
Are provided above and below the protruding portions 71, 71a, however, such mounting means may be separate, and the upper end tooth surfaces 74 of the racks 72, 72a are horizontal and provided at the upper ends of the side wall portions 68, 68a. Further, the pinions 27, 27a or the second guide wheels 34, 34a of the wheelchair 1 which engage with the racks 72, 72a or the guide rails 73, 73a can also be changed in shape in accordance with the above.

Reference numerals 75 and 75a denote a track portion 65 having a lowland portion 61 and a highland portion.
Are provided on the ground 76 of the lowland part 61 and the highland part 62, and are provided with footrests 64, 64a... Has formed.

Are a pair of guide embankments provided on the ground 76 at the base point and the end point of the elevating track 2, and the guide embankments 78, 78a... Correspond to the width of the rear wheels 22, 22a of the wheelchair 1. The direction of travel of the main trajectory 66, with corresponding spacing
Are arranged on both extensions, and have inclined slopes 79, 79a on the elevation side with respect to the ground 76, so that when the wheelchair 1 runs on the elevation track 2, the rear wheels 22, 22a are in a floating state. I have.

Next, the operation of the electric wheelchair and the lifting / lowering track according to the present invention will be described. In a normal state in which the front wheel 14 and the rear wheels 22, 22a of the wheelchair 1 are in contact with the ground 76, the lowland 61
When the vehicle reaches the stairs 60 on which the elevating track 2 is laid, the front wheel 14 continues to travel toward the guide space 69 of the main track 66, and the front wheel 14 rides on the bottom 67 of the guide space 69. Start lifting.

Next, after the rear wheels 22, 22a of the wheelchair 1 ride on the guide embankments 78, 78a, the pinions 27, 27a of the drive shaft 21 provided on the wheelchair 1 are moved to the racks 72 of the main track 66, 72
a ride on the vehicle, the wheelchair 1 ascends on the elevating track 2 by the meshing of the pinions 27, 27a and the racks 72, 72a, and the rear wheels 22, 22a float up. Touches the ground 76 to return to normal running.

The description of the operation is omitted because the operation at the time of descent is the reverse of the operation at the time of ascending. In this elevating track 2, the front wheel 14 of the wheelchair 1 travels on the bottom 67 of the main track 66.
Can also be used to carry bicycles.

When the wheelchair 1 travels on the elevating track 2, the first guide wheels 31, 31a provided on the lower surface of the wheelchair 1 are in the guide space 69, and the second guide wheels 34, 34a are in the guide rails 73, 73a. Each hold the wheelchair 1 in a ground contact state, and
The seat 45 is always kept horizontal even when the wheelchair 1 is in various inclined states by the 45.

[0027]

In short, the present invention provides a motor-driven wheelchair 1 in which a front wheel 5, a rear wheel 7, a seat 9 and a drive unit 20 are provided on a bogie unit 3, and a drive shaft 21 is provided with pinions 27, 27a. Therefore, in a normal level terrain running, the vehicle is run with the front wheel portion 5 and the rear wheel portion 7 grounded on the ground 76 while sitting on the seat portion 9,
In the staircase 60 connecting the lowland 61 and the highland 62,
The wheelchair 1 moves up and down between high and low altitudes by engaging the pinions 27 and 27a with the racks 72 and 72a of the elevating track 2 installed on the stairs 60 so that people who cannot walk on their own can use the wheelchair 1. It is possible to use a variety of facilities as well as to expand the range of action by riding a car, and to manufacture such a wheelchair 1 at relatively low cost because the conventional wheelchair 1 only has the pinions 27 and 27a. Can be done.

The lowland 61, the stairs 60, and the highland 6
2, a track portion 65 is installed, and a rack 72 is
72a, and footrests 64, 64a,.
The track section 65 was erected in a floating state via
For the staircase 60 installed between 61 and the highland 62,
There is no need for large-scale construction to renovate the stairs 60,
Elevating trajectory 2 on lowland 61, staircase 60 and highland 62
Easy to set up and down track 2 required for nursing simply by installing
It can be used to improve social capital .

Further, the pinions 27, 27a of the wheelchair 1 are raised.
Mesh with the racks 72, 72a of the descending track 2,
7, 27a and the racks 72, 72a mesh with the rear wheels 22, 2
2a and lift the front wheels 14 on the bottom 67 of the elevator track 2.
To go up and down the stairs.

The front part of the seat 9 is used as a front support part 41.
At the same time as pivoting, the rear part of the seat part 9 is
A front support portion 41 pivotally attached to the carriage portion 3 and swingably attached thereto.
Automatically expands and contracts in accordance with the inclination of the bogie unit 3.
Hydraulic cylinder 46 with idro pump 45
Therefore, when the wheelchair 1 travels on the elevating track 2,
At the time, or when traveling on a normal slope, the bogie unit 3
Even if the seat is inclined, the seat 40 is
Maintains a horizontal state at all times, and the user of wheelchair 1 changes posture
Without falling down stably without falling
It can be raised and lowered.

Further, the low-land portion 61 and the high-land portion 6 of the hoisting track 2
In the grounding portions 75 and 75a with respect to the
Guide embankments 78, 78a ... are provided on both extensions in the traveling direction.
Because of the beam, the track portion 65 installed on the ground 76
Guidance embankment without large-scale construction on the ground 76
The wheelchair 1 runs on the elevating track 2 only with the construction of 78, 78a ...
Raise the rear wheel 7 of the wheelchair 1 to move
Of the pinions 27, 27a with the locks 72, 72a
In order to facilitate the operation, the wheelchair 1 is
a ... Easy to drive on the track 2 and wheelchair 1
Can be easily set .

The first guide wheels 31, 3 are provided on the lower surface of the wheelchair 1.
1a is rotatably provided on a horizontal plane, and
A guide space 69 is provided in a reverse gate shape, and the guide space 69 is provided.
The first guide wheels 31, 31a of the wheelchair 1 can be fitted freely.
As a result, the wheelchair 1 is placed on the elevator track 2 by operating the handle 17.
After riding and starting to go up and down, the first guide wheels 31, 31a are
By fitting into the inner space 69, the wheelchair 1 moves up and down
Stable ascent and descent without derailing from 2
I can do it. Further, guide rails 73, 73a are provided on the side wall portions 68, 68a of the elevating track 2, and the guide rails 73, 73a are provided.
the second guide wheels 34, 34a engaging with the lower surface of
Since the wheelchair 1 is rotatably provided on the wheelchair 1, it is assumed that the seat 40 is horizontally held by the operation of the front support portion 41 because the elevator track 2 is inclined when the wheelchair 1 moves up and down on the elevator track 2. Even when the bogie portion 3 of the wheelchair 1 is inclined along the elevating track 2 and the center of gravity is eccentric in the direction of the lowland portion 61, the second guide wheels 34, 34a of the wheelchair 1 maintain the side wall portions 68, 68a of the elevating track 2. The wheelchair 1 is brought into contact with the underside of the
Can be prevented from falling in the direction of the lowland portion 61, and the practical effect is extremely large.

[Brief description of the drawings]

FIG. 1 is a side view of a wheelchair according to the present invention.

FIG. 2 is a bottom view of a main part of FIG. 1;

FIG. 3 is a rear view of a main part of FIG. 1;

FIG. 4 is an enlarged side view of a main part of a seat portion of a wheelchair.

FIG. 5 is a rear view of FIG. 4;

FIG. 6 is a side view of a lowland portion and a wheelchair in a lifting track.

FIG. 7 is a side view in which a part of an elevating track is omitted.

FIG. 8 is a rear view of a main part showing an engagement state between the wheelchair and the elevating track.

[Explanation of symbols]

 Reference Signs List 1 wheelchair 3 bogie section 5 front wheel section 7 rear wheel section 9 seat section 14 front wheel 20 drive section 21 drive shaft 27, 27a pinion 31, 31a first guide wheel 34, 34a second guide wheel 41 front support section 42 rear mounting seat 45 Hydropump 46 Hydraulic cylinder 60 Step 61 Lowland 62 Highland 64, 64a… Footrest 65 Track 66 Main track 68, 68a Side wall 69 Guide space 72, 72a Rack 73, 73a Guide rail 75, 75a Grounding section 78, 78a… Guide embankment

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 58-20271 (JP, U) Japanese Utility Model Showa 53-149357 (JP, U)

Claims (5)

(57) [Claims] 1. An electric wheelchair having a front wheel portion, a rear wheel portion, a seat portion, and a drive portion provided on a bogie portion, and a pinion provided on a drive shaft, and a track portion provided on a lowland portion, a staircase portion, and a highland portion. , The track section
A rack at the stairs,
Lifting an electric wheelchair consisting of a lifting track installed in a floating state
A lifting device that engages the pinion of the wheelchair with the rack on the
The rear wheel is lifted by the meshing of the pinion and
An electric wheelchair lifting / lowering device, wherein a front wheel of a wheelchair is run on a part . 2. An electric wheelchair, wherein a front portion of a seat portion is pivotally attached to a front support portion, and a rear portion of the seat portion is pivotally attached to a rear mounting seat, and is swingably attached to the bogie portion. 2. The motorized wheelchair lifting and lowering device according to claim 1, wherein the part is a hydraulic cylinder equipped with a hydropump that automatically expands and contracts according to the inclination of the bogie part . 3. The motor-operated type according to claim 1, wherein a guide embankment portion is provided on each of the contact portions of the lifting track with respect to the lowland portion and the highland portion on both sides in the traveling direction of the track portion.
Wheelchair lifting device. 4. A first guide wheel is turned on a lower surface of a wheelchair in a horizontal plane.
With rolling freely provided, the lifting trajectory forms a Gyakumon type shape provided guide spaces, according to claim 1, 2 or, characterized in that made a first guide wheels of the wheelchair freely fitted in the guide space 3. The lifting device for the electric wheelchair . 5. A guide rail is provided on a side wall portion of an elevating track, and a second guide wheel engaging with a lower surface of the guide rail is provided in a vertical plane.
In claim, characterized in rotatably by providing a wheelchair 4
Electric wheelchair lifting device.