JP2001137292A - Electric wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the instability that a front wheel is raised in traveling on a slope, and to facilitate the getting-on/getting-off of a user in a three-wheel type electric wheelchair in which a pair of rear wheels are driven by a motor, and one front wheel is steered by a steering wheel. SOLUTION: The center of gravity of the electric wheelchair 1 itself is moved forward by disposing a battery 29 on the right and left sides of a front wheel 31, and the center of gravity of a seated user is set to be lower by arranging a seat surface 37 of a chair 35 to be lower than a top part of the rear wheels 25, and arranging a rear end of the chair 35 to be between the rear wheels 25. Further, a slide mechanism to allow the chair 35 to slide in the longitudinal direction and a rotational mechanism to rotate the chair are provided, and an adjusting mechanism 43 to adjust the position of the steering wheel to steer the front wheel 31 is also provided to facilitate the getting-on/getting-off of the user.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an electric wheelchair driven by a motor on which an elderly person or a physically handicapped person rides.

2. Description of the Related Art In an electric wheelchair, a wheel is driven by a motor while an elderly person or a physically handicapped person is sitting alone on a chair and runs. Unlike mini cars and mopeds, they are allowed to run at low speeds and run on public roads without a license. There are three-wheeled and four-wheeled electric wheelchairs. In the three-wheel type, a pair of rear wheels are driven by a motor powered by a battery, and one front wheel is operated by a handle. A chair on which the user sits is provided at a position higher than the position of the rear wheel. The battery was located near the space between the pair of rear wheels, and a chair was provided above it.

However, in the conventional three-wheeled electric wheelchair, a heavy object such as a motor, a battery, and a gear box is arranged near the rear wheel, and the center of gravity is deviated rearward. When traveling up a hill, the front wheels tend to float up and have instability.
In addition, in order to protect the user seated in the electric wheelchair from rain and wind, it is conceivable to cover the front, top, or entire surface of the electric wheelchair, but the height, width, and overall length of the electric wheelchair are limited. ing. Alternatively, it is desirable to make the electric wheelchair compact. For this reason, it is expected that it will be difficult for the user to get on and off in a narrow space covered with a cover or in a narrow space that is compact. The present invention has been made in order to solve the above-described problems, and eliminates the instability of the tendency of the front wheels to float when traveling up a slope, protects a user seated in an electric wheelchair from rain and wind, and prevents the user from getting on and off. It is an object of the present invention to provide an easy-to-use electric wheelchair.

In order to solve the above problems, a first invention is a three-wheel type electric motor in which a pair of rear wheels are driven by a motor powered by a battery and one front wheel is steered. An electric wheelchair, wherein the seat surface of the chair is lower than the top of the rear wheel, at least the rear end of the chair is provided between the rear wheels, and the batteries are disposed on the left and right sides of the front wheel. A second invention is a three-wheeled electric wheelchair in which a pair of rear wheels are driven by a motor powered by a battery and steered by one front wheel. An electric wheelchair comprising a slide mechanism for sliding forward and backward and a rotation mechanism for rotating while sliding. A third invention is a three-wheeled electric wheelchair in which a pair of rear wheels are driven by a motor powered by a battery and steered by one front wheel.
An electric wheelchair comprising: a front surface, a front surface and an upper surface, or a cover that covers the entire surface, and an adjustment mechanism capable of adjusting the position of the steering wheel for up, down, front and back.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the entire electric wheelchair 1 is covered by a cover 3. A front glass 5 is provided on the front surface of the cover 3, and side glasses 9 are provided on the left and right sides of the front left and right pillars 7. Further, side doors 11 are provided on both side surfaces, and the side doors 11 are attached to the rear left and right pillars 13 by hinges so as to be openable and closable. Behind the pillar 13, side glass 15 is provided on the left and right. A back door 17 is provided on the rear surface, and is attached to the ceiling portion 19 of the cover 3 by a hinge so as to be openable and closable. The side door 15 and the back door 17 have window glasses 21 and 2 that can be opened and closed, respectively.
3 is attached. Each window glass 21 and 23 is a door 1
It moves along the surfaces 5 and 17 to open and close. A pair of rear wheels 2
5, a gearbox (not shown) having a differential gear is arranged, and a motor 27 (not shown) is arranged adjacent to the gearbox. A battery 29 serving as a power source for the motor 27 is disposed substantially symmetrically on the left and right sides of the front wheels 31 for steering. A shopping basket 33 is arranged above the rear wheel 25. In front of this shopping basket 33,
A chair 35 on which a user sits is arranged. The seat surface 37 of the chair 35 is lower than the top of the rear wheel 25, and the rear end of the seat surface 37 is provided between the rear wheels 25. A steering wheel 41 for steering the front wheel 31 is provided with an adjustment mechanism 43 for adjusting the position.
Is provided. The adjustment mechanism 43 supports a mechanism 47 that doubles and slides the shaft 45 in order to adjust the length of the steering shaft 45 in the vertical direction, and the connection portion 49 of the handle 41 that is connected to the upper end of the steering shaft 45. The supporting portion 51 comprises a mechanism 53 which can be adjusted substantially in the front-back direction. Next, the mechanism of the chair 35 will be described with reference to FIGS. The chair 35 has a seat portion 61 on which a user sits, a back portion 63 connected to the rear end of the seat portion 61, and an armrest portion 65 protruding forward from both sides of the back portion 63. A rotating shaft 67 is provided on the lower surface of the seat 61, and a bearing 6 for receiving the rotating shaft 67 is provided.
9 is provided at substantially the center of the upper surface of the slide base 71. An elastic lever 73 (FIG. 4) is provided on the side surface of the rotating shaft 67.
(A) is protruded toward the side, and a lip 75 is formed at the tip. A pin 77 protrudes downward substantially at the center of the lower side of the lever 73. A pin hole 79 for receiving the pin 77 is formed in a positioning flange 81 formed concentrically with the bearing 69.
The positions of the pin holes 79 are formed at four positions on the front, rear, left and right, with a shift of 90 degrees. Thus, the rotation mechanism is configured. Roller receivers 83 having a U-shaped cross section are fixed to the left and right of the slide table 71 in the front-rear direction. The U-shaped cross section of the roller receiver 83 is oriented toward the center below the slide base 71, and the lower side 85 of the U-shape is a guide slit for a guide pin 87 to relatively travel along the front-rear direction. 89 are formed. On the vehicle body side, a lower roller 91 that contacts the lower surface of the roller receiver 83 and an upper roller 93 that is located in the U-shaped cross section of the roller receiver 83 are provided as a pair of right and left. A guide pin 8 penetrating through the guide slit 89 is provided on the vehicle body side.
A pair of front and rear 7 is provided at each end to prevent the head 9 from coming off.
5 is fixed. Thus, the slide mechanism is configured. Further, a guide plate 97 that guides the rear end of the slide base 71 and the rear end of the chair 35 from the left and right, with the slide base 71 slid rearward, is provided on the vehicle body side.
A pair of right and left is fixedly provided in the vertical direction. A second lever 99 having elasticity (see FIG. 4C) is provided on the side of the slide base 71 so as to protrude toward the side, and the end 101 is formed only at the end. A lock pin 103 protrudes downward substantially at the center of the lower side of the second lever 99. A plurality of pin holes 105 for receiving the lock pins 103 are provided.
It is formed in the hole fitting 107. The hole fitting 107 is fixed to the vehicle body side, and the plurality of pin holes 105 are arranged along the slide base 71. Thus, a lock mechanism for locking the slide table 71 is configured. (Effects of Embodiment) According to the above embodiment, even when the weather is strong, if the vehicle is driven with the window glasses 21 of the left and right side doors 11 tightened and the window glass 23 of the back door 17 tightened, The user inside can run without being exposed to rain and wind. Also, when traveling uphill, the center of gravity of the seated user is at a low position, and since the battery 29 is located near the front wheels 31, the center of gravity of the driving assistance vehicle 1 itself is also at the front. It is possible to reduce the instability that the front wheel 31 tends to float as in the related art. When the user gets on and off, the second lever 99
The lock pin 103 of the second lever 99 is removed from the pin hole 105 to release the lock of the slide base 71, and the chair 35 is slid back and forth by the slide mechanism. When the second lever 99 is released at a predetermined front and rear position, the second lever 99 is locked again. Further, the lever 7 of the rotating shaft 67
By pulling up the pin 3, pulling out the pin 77 from the pin hole 79, and changing the running direction of the chair by 90 degrees, the user can face the left or right side door 11, and is covered by the cover 3. The user can easily get on and off even in a narrow space. Also, the adjusting mechanism 43 of the handle 41
By changing the position of the handle 41 downward and forward, the space for getting on and off can be widened, and getting on and off can be made easier. The position adjustment 43 of the handle 41 allows the position of the handle 41 to be adjusted according to the size of the user's body and the like. (Other Embodiments) In the above embodiment, the chair 35
The pin 77 for locking the rotation mechanism for rotating the pin is inserted into the pin hole 79. However, in another embodiment, a notch groove is formed instead of the pin hole 79. Is possible. In the above embodiment, the lever 73 that moves the pin 77 up and down has elasticity by the leaf spring function of the lever 73 itself, and maintains the state in which the pin 77 is inserted into the pin hole 79 by this elasticity. However, in other embodiments, the lever 73 is used.
Apart from this, it is possible to obtain elasticity by providing a coil spring or the like. In the above embodiment, the electric wheelchair 1 has the cover 3 covering the entire surface. However, in other embodiments, the electric wheelchair 1 may cover only the front surface or only the front surface and the upper surface. It is possible. In the above embodiment, the lock mechanism for locking the slide table 71 includes the second lever 99 separately from the lever 73 of the rotating shaft 67. However, in other embodiments,
For example, as shown in FIG. 5, the lever 73 of the rotating shaft 67 may be used also as a lock mechanism for the slide base. That is, the lock pin 109 is provided upward on the upper surface of the lever 73, and a plurality of pin holes 111 for receiving the lock pin 109 are formed in the hole fitting 113. The hole fitting 113 is fixed in the middle of the guide plate 97 in the vertical direction, and protrudes forward. The plurality of pin holes 111 are arranged along the slide table 71. Thus, a lock mechanism for locking the slide base 71 can be configured.

As described above, according to the first aspect of the present invention, the chair is not located above the rear wheel as in the prior art, but has a seat surface lower than the top of the rear wheel and a rear end. Since it is provided between the rear wheels, the position of the center of gravity of the seated user can be lowered, and further, by arranging the batteries on the left and right of the front wheel, the center of gravity of the electric wheelchair itself can also move forward. Thus, when the electric wheelchair travels up a hill, the instability of the front wheels tending to be lifted can be eliminated. According to the invention of claim 2, by covering the front, front and top, or the front of the electric wheelchair with a cover, the seated user can be protected from rain and wind.
By sliding the chair back and forth and rotating,
Even in a narrow space covered by the cover, the posture of the user can be changed so that the user can easily get in and out of the space. Also,
According to the third aspect of the present invention, the seated user can be protected from rain and wind by covering the front, front and top surfaces, or the front surface of the electric wheelchair. Can be adjusted to the position
The narrow space covered by the cover can be widened, and the user can easily get on and off.

[Brief description of the drawings]

1A and 1B show the appearance of an electric wheelchair according to an embodiment of the present invention, wherein FIG. 1A is a front view, FIG. 1B is a side view, and FIG.
FIG. 4D is a rear view, FIG. 4D is a view showing a state in which the door of FIG. 4B is open, and FIG. 4E is a view showing a state in which the door of FIG.

2A is a diagram showing details of FIG. 1B and an outline of a vehicle interior, and FIG. 2B is a diagram showing details of FIG. 1C and an outline of a vehicle interior.

3A is an enlarged view of the chair of FIG. 2A, and FIG. 3B is a view showing the operation of FIG.

4A is a perspective view of a main part of FIG. 3A, and FIG. 4B is an enlarged plan view showing details of a roller receiver of FIG. 3A;

FIG. 5 is a cross-sectional view of a main part showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric wheelchair 3 Cover 5 Front glass 7 Front right and left pillar 9 Side glass 11 Side door 13 Rear right and left pillar 15 Side glass 17 Back door 19 Ceiling part 21, 23 Window glass 25 Rear wheel 27 Motor 29 Battery 31 Front wheel 33 Shopping basket 35 Chair 37 Seat 41 Handle 43 Adjustment mechanism 45 Steering shaft 61 Seat 63 Back 65 Armrest 67 Rotating shaft 69 Bearing 71 Slide base 73 Lever 75 Nigiri 77 Pin 79 Pin hole 81 Flange 83 Roller receiver 85 Lower side of U-shape 87 Guide Pin 89 Guide slit 91 Lower roller 93 Upper roller 95 Head 97 Guide plate

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[Procedure amendment]

[Submission date] November 12, 1999 (1999.11.
12)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Electric wheelchair

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an electric wheelchair driven by a motor on which an elderly person or a physically handicapped person rides.

[0002]

2. Description of the Related Art In an electric wheelchair, a wheel is driven by a motor while an elderly person or a physically handicapped person is sitting alone on a chair and runs. Unlike mini cars and mopeds, they are allowed to run at low speeds and run on public roads without a license.

[0003] Such electric wheelchairs were of three-wheeled type and four-wheeled type. In the three-wheel type, a pair of rear wheels are driven by a motor powered by a battery, and one front wheel is operated by a handle. A chair on which the user sits is provided at a position higher than the position of the rear wheel.
The battery was located near the space between the pair of rear wheels, and a chair was provided above it.

[0004]

However, in the conventional three-wheeled electric wheelchair, a heavy object such as a motor, a battery, and a gear box is arranged near the rear wheel, and the center of gravity is deviated rearward. When traveling up a hill, the front wheels tend to float up and have instability.

Further, in order to protect a user seated in the electric wheelchair from rain and wind, it is conceivable to cover the front, top, or entire surface of the electric wheelchair. However, each dimension of the height, width and total length of the electric wheelchair is considered. Is restricted. Alternatively, it is desirable to make the electric wheelchair compact.

[0006] Therefore, it is expected that it will be difficult for a user to get on and off in a narrow space covered with a cover or a compact narrow space.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and eliminates the instability of the tendency of the front wheels to float when traveling uphill, to protect the user seated on the electric wheelchair from rain and wind. It is an object of the present invention to provide an electric wheelchair that allows easy getting on and off.

[0008]

In order to solve the above problems, a first invention is a three-wheel type electric motor in which a pair of rear wheels are driven by a motor powered by a battery and one front wheel is steered. An electric wheelchair, wherein the seat surface of the chair is lower than the top of the rear wheel, at least the rear end of the chair is provided between the rear wheels, and the batteries are disposed on the left and right sides of the front wheel.

According to a second aspect of the present invention, there is provided a three-wheeled electric wheelchair in which a pair of rear wheels are driven by a motor powered by a battery and steered by one front wheel. An electric wheelchair comprising: a slide mechanism for sliding a chair back and forth; and a rotation mechanism for rotating the chair while sliding.

According to a third aspect of the present invention, there is provided a three-wheeled electric wheelchair in which a pair of rear wheels are driven by a motor powered by a battery and steered by one front wheel. And an adjustment mechanism for adjusting the position of the steering wheel for up, down, front and back, and an electric wheelchair.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 1, the electric wheelchair 1 is entirely covered by a cover 3. A front glass 5 is provided on the front surface of the cover 3, and side glasses 9 are provided on the left and right sides of the front left and right pillars 7.

Further, side doors 11 are provided on both side surfaces, and the side doors 11 are attached to the rear left and right pillars 13 by hinges so as to be openable and closable. Behind the pillar 13, side glass 15 is provided on the left and right. A back door 17 is provided on the rear surface, and is covered with a hinge 3.
It is attached to the ceiling portion 19 of the car so that it can be opened and closed.

Window glasses 21 and 23, which can be opened and closed, are attached to the side door 15 and the back door 17, respectively.
The window glasses 21 and 23 move along the surfaces of the doors 15 and 17 to open and close.

A gearbox (not shown) having a differential gear is disposed between the pair of rear wheels 25, and a motor 27 (not shown) is disposed adjacent to the gearbox. A battery 29 serving as a power source for the motor 27
Are arranged substantially symmetrically on the left and right sides of the front wheel 31 to be steered.

A shopping basket 33 is arranged above the rear wheel 25. In front of the shopping basket 33, a chair 35 on which a user sits is arranged. The seat surface 37 of the chair 35 is lower than the top of the rear wheel 25, and the rear end of the seat surface 37 is provided between the rear wheels 25.

A steering wheel 41 for steering the front wheels 31
Is provided with an adjustment mechanism 43 for adjusting the position. The adjusting mechanism 43 supports a mechanism 47 that doubles and slides the shaft 45 in order to adjust the length of the steering shaft 45 in the vertical direction, and the connecting portion 49 of the handle 41 that is connected to the upper end of the steering shaft 45. Mechanism 53 that allows the supporting portion 51 to be adjusted substantially in the front-rear direction.
Consists of

Next, the mechanism of the chair 35 will be described with reference to FIGS.

The chair 35 has a seat portion 61 on which a user sits.
And a back 63 connected to the rear end of the seat 61, and an armrest 65 protruding forward from both sides of the back 63. A rotating shaft 67 is provided on the lower surface of the seat 61,
A bearing 69 for receiving the rotating shaft 67 is provided substantially at the center of the upper surface of the slide base 71.

An elastic lever 73 (see FIG. 4A) is provided on the side surface of the rotating shaft 67 so as to protrude toward the side.
A nipple 75 is formed at the tip. A pin 77 protrudes downward substantially at the center of the lower side of the lever 73. A pin hole 79 for receiving the pin 77 is provided in the bearing 6.
9 is formed on a positioning flange 81 formed concentrically with respect to FIG. The positions of the pin holes 79 are formed at four positions on the front, rear, left and right, with a shift of 90 degrees. Thus, the rotation mechanism is configured.

Roller receivers 83 having a U-shaped cross section are fixed to the left and right of the slide base 71 in the front-rear direction. The U-shaped cross section of the roller receiver 83 is
1, a guide slit 89 is formed on the lower side 85 of the U-shape along the front-rear direction so that the guide pin 87 can relatively travel.

On the vehicle body side, a lower roller 91 in contact with the lower surface of the roller receiver 83 and a pair of upper rollers 93 located in the U-shaped cross section of the roller receiver 83 are provided in a pair. Further, a pair of front and rear guide pins 87 penetrating the guide slit 89 are provided on the vehicle body side,
A head 95 for retaining is fixed to each end. Thus, the slide mechanism is configured. Also, on the car body side,
With the slide base 71 slid rearward, guide plates 97 for guiding the rear end of the slide base 71 and the rear end of the chair 35 from right and left are fixedly provided in a pair in the vertical direction.

A second lever 99 having elasticity (see FIG. 4 (C)) is provided on the side of the slide base 71 so as to protrude toward the side. A lock pin 103 protrudes downward substantially at the center of the lower side of the second lever 99. A plurality of pin holes 105 for receiving the lock pins 103 are formed in the hole fitting 107. The hole fitting 107 is fixed to the vehicle body side and has a plurality of pin holes 1.
05 is arranged along the slide table 71. Thus, a lock mechanism for locking the slide table 71 is configured.

(Effects of Embodiment) According to the above embodiment, even when the weather is strong, the left and right side doors 1 can be used.
1 and the window glass 2 of the back door 17 is tightened.
If the vehicle travels with 3 tightened, the inside user can travel without being exposed to rain and wind.

Also, when traveling uphill, the center of gravity of the seated user is at a low position.
Since the center of gravity of the driving assistance vehicle 1 itself is also located forward because of being disposed near the front wheels 31, it is possible to reduce the instability that the front wheels 31 tend to float as in the related art.

When the user gets on and off the vehicle, the grip 101 of the second lever 99 is pulled up, the lock pin 103 of the second lever 99 is removed from the pin hole 105, and the slide base 71 is removed.
Is unlocked, and the chair 35 is slid back and forth by the slide mechanism. The second lever 99
If you release, it will be locked again.

Further, by pulling up the lever 73 of the rotating shaft 67, pulling out the pin 77 from the pin hole 79, and changing the running direction of the chair by 90 degrees, the user can be directed to the left or right side door 11. The user can get on and off easily even in a narrow space covered by the cover 3.

Further, by changing the position of the handle 41 downward and forward by the adjusting mechanism 43 of the handle 41,
The space for getting on and off can be increased, making getting on and off easier. Also, by adjusting the position 43 of the handle 41,
The position of the handle 41 can be adjusted according to the size of the user's body and the like.

(Other Embodiments) In the above embodiment, the pin 77 for locking the rotation mechanism for rotating the chair 35 is inserted into the pin hole 79, but in another embodiment, It is possible to form notch grooves instead of the pin holes 79.

In the above embodiment, the pin 7
The lever 73 for vertically moving the lever 7 has elasticity by the leaf spring function of the lever 73 itself, and maintains the state in which the pin 77 is inserted into the pin hole 79 by this elasticity. In this case, a coil spring or the like can be provided separately from the lever 73 to obtain elasticity.

In the above embodiment, the electric wheelchair 1 has the cover 3 covering the entire surface. However, in other embodiments, the electric wheelchair 1 covers only the front surface or covers only the front surface and the upper surface. It is also possible.

In the above embodiment, the slide table 7
The lock mechanism for locking the rotation shaft 1 has a second lever 99 separately from the lever 73 of the rotation shaft 67. However, in another embodiment, for example, as shown in FIG. May also be used for the lock mechanism of the slide table.

That is, the lock pin 109 is provided upward on the upper surface of the lever 73, and a plurality of pin holes 111 for receiving the lock pin 109 are formed in the hole fitting 113. The hole fitting 113 is fixed in the vertical direction of the guide plate 97 and protrudes forward. The plurality of pin holes 111 are arranged along the slide table 71. In this way,
A lock mechanism for locking the slide table 71 can be configured.

[0034]

As described above, according to the first aspect of the present invention, the chair is not located above the rear wheel as in the prior art, but has a seat surface lower than the top of the rear wheel and a rear end. Since it is provided between the rear wheels, the position of the center of gravity of the seated user can be lowered, and further, by arranging the batteries on the left and right of the front wheel, the center of gravity of the electric wheelchair itself can also move forward. Thus, when the electric wheelchair travels up a hill, the instability of the front wheels tending to be lifted can be eliminated.

According to the second aspect of the present invention, by covering the front, front and top, or the front of the electric wheelchair with a cover, the seated user can be protected from rain and wind, and the chair can be moved forward and backward. By sliding and rotating, it becomes possible to change the posture of the user so that the user can easily get on and off even in a narrow space covered with the cover. According to the third aspect of the present invention, the seated user can be protected from rain and wind by covering the front, front and top surfaces, or the front surface of the electric wheelchair, and the position of the handle can be adjusted up and down by the adjustment mechanism. And the front and rear positions can be adjusted, so that the narrow space covered with the cover can be widened and the user can easily get on and off.

[Brief description of the drawings]

1A and 1B show the appearance of an electric wheelchair according to an embodiment of the present invention, wherein FIG. 1A is a front view, FIG. 1B is a side view, and FIG.
FIG. 4D is a rear view, FIG. 4D is a view showing a state in which the door of FIG. 4B is open, and FIG. 4E is a view showing a state in which the door of FIG.

2A is a diagram showing details of FIG. 1B and an outline of a vehicle interior, and FIG. 2B is a diagram showing details of FIG. 1C and an outline of a vehicle interior.

3A is an enlarged view of the chair of FIG. 2A, and FIG. 3B is a view showing the operation of FIG.

4A is a perspective view of a main part of FIG. 3A, and FIG. 4B is an enlarged plan view showing details of a roller receiver of FIG. 3A;

FIG. 5 is a cross-sectional view of a main part showing another embodiment.

[Description of Signs] 1 Electric wheelchair 3 Cover 5 Front glass 7 Front left and right pillar 9 Side glass 11 Side door 13 Rear left and right pillar 15 Side glass 17 Back door 19 Ceiling part 21, 23 Window glass 25 Rear wheel 27 Motor 29 Battery 31 Front wheel 33 Shopping basket 35 Chair 37 Seat surface 41 Handle 43 Adjusting mechanism 45 Steering shaft 61 Seat 63 Back 65 Armrest 67 Rotation shaft 69 Bearing 71 Slide stand 73 Lever 75 Nigiri 77 Pin 79 Pin hole 81 Flange 83 Roller receiver 85 Lower side 87 guide pin 89 guide slit 91 lower roller 93 upper roller 95 head 97 guide plate

Claims (3)

[Claims] 1. A three-wheeled electric wheelchair in which a pair of rear wheels are driven by a motor powered by a battery and steered by one front wheel, the seat surface of the chair is lower than the top of the rear wheel, and at least the rear of the chair. The end is provided between the rear wheels,
An electric wheelchair, wherein batteries are arranged on left and right sides of a front wheel. 2. A three-wheeled electric wheelchair in which a pair of rear wheels are driven by a motor powered by a battery and steered by one front wheel. An electric wheelchair, comprising: a slide mechanism for sliding the slide wheel; and a rotation mechanism for rotating the slide wheel. 3. A three-wheeled electric wheelchair in which a pair of rear wheels are driven by a motor powered by a battery and are steered by one front wheel. An electric wheelchair provided with an adjusting mechanism for adjusting a position of a handle for up, down, front and rear, and a steering wheel.