JP2011078548A - Electric wheelchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wheelchair which enables a physically-challenged occupant to easily adjust a position of the electric wheelchair to a device in the backward direction. <P>SOLUTION: The electric wheelchair 1 is positioned right in front of a seat base 25 by detecting a position of the seat base 25 by a laser, by determining a distance between the electric wheelchair and the seat base 25 by ultrasound, and by making distances between both right and left ends of the electric wheelchair 1 and both right and left ends of the seat base 25 equal. Therefore, after the occupant ends the control, he/she couples the electric wheelchair to the seat base 25 only by moving the electric wheelchair 1 to the back by manual operation, and the electric wheelchair 1 is used as a seat device. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electric wheelchair that can be used as a wheelchair outside a passenger compartment and can be used as a seat on which an occupant sits in the passenger compartment.

A conventional electric wheelchair related to this is described in Patent Document 1.
The vehicle seat (electric wheelchair) 90 described in Patent Document 1 includes a seat device 92 that can be used as a wheelchair outside the passenger compartment and can be used as a seat on which an occupant is seated in the passenger compartment. . The sheet device 92 is configured to be connectable to a sheet moving device 70 corresponding to the sheet device 92. Then, when the seat moving device 70 operates in a state where the seat device 92 is coupled to the seat moving device 70, the seat device 92 can move between the vehicle interior and the exterior of the vehicle interior. Further, the seat device 92 moved to the outside of the passenger compartment can be used in the same manner as a normal wheelchair by being separated from the seat moving device 70.

JP 2004-148093 A

  In the configuration as described above, the electric wheelchair separated from the seat moving device can freely move with the intention of the occupant and can move to the intended location of the occupant. And after reaching the purpose, it can be returned to the vehicle and coupled to the seat moving device so that it can be pulled into the vehicle compartment and used again as a vehicle seat, but the occupant is using the electric wheelchair. The body is handicapped (being physically handicapped) and cannot move easily as a normal person operates. Therefore, a considerable amount of labor may be expended until the sheet moving device is aligned rearward and coupled to the device.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electric wheelchair that can be easily rearwardly positioned even by a disabled passenger. There is.

In order to solve the above-described problem, in the electric wheelchair according to claim 1, the electric wheelchair is a seat device that can be used as a wheelchair outside the passenger compartment and can be used as a seat on which a passenger sits in the passenger compartment. ,
A seat moving device for moving the seat device between a vehicle interior and a vehicle exterior;
The seat moving device is provided with a seat base that is connected to the wheelchair and moves with the seat device after becoming the seat device.
A device for emitting laser light and ultrasonic waves is provided at the rear of the electric wheelchair, and the emitting device can be rotated within a range of a certain angle and can irradiate laser light and ultrasonic waves over a wide range. And
The seat base is provided with a reflector, and can reflect laser light and ultrasonic waves emitted from the rear part of the electric wheelchair,
The reflected laser beam and the ultrasonic wave are detected by a light receiving unit provided at the rear part of the electric wheelchair, thereby guiding the electric wheelchair to the front of the seat base.

  According to the electric wheelchair described in claim 1, it is possible to detect the seat base that moves the electric wheelchair into the vehicle interior using the laser light and the ultrasonic wave irradiated from the rear part of the electric wheelchair, and the electric wheelchair is moved backward. Thus, it is possible to support the occupant connected to the seat base. Therefore, even a disabled passenger can easily position the seat base backwards. In addition, the laser beam and ultrasonic wave emission device can be rotated within a range of a certain angle, and the laser beam and ultrasonic wave can be irradiated over a wide range, so that the position of the sheet table can be easily detected. It plays.

1 is a plan view of a vehicle equipped with an electric wheelchair according to the present invention in a rear seat. It is the perspective view which showed the state which accommodated the electric wheelchair concerning this invention as a seat apparatus in the vehicle interior. It is the perspective view which showed the electric wheelchair and seat movement apparatus concerning this invention. It is the figure which showed the control action which connects the electric wheelchair concerning this invention to a seat stand.

  Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a vehicle 100 equipped with an electric wheelchair 1 according to the present invention. This embodiment demonstrates the case where the electric wheelchair 1 is applied to the backseat of the 2nd row | line | column of the said vehicle so that it may show in figure.

  The electric wheelchair 1 is provided with wheels and can be used as a wheelchair outside the passenger compartment, and becomes a seat device 10 used as a seat for a passenger to sit inside the passenger compartment. The seat device 10 is moved by the seat moving device 20 from the vehicle interior to the vehicle interior or vice versa. The seat device 10 is installed in the vehicle interior in a state of being connected to the seat moving device 20. The electric wheelchair 1 of the present invention is characterized by a device that operates in an auxiliary manner when trying to return to the vehicle when outside the passenger compartment, that is, when used as a wheelchair. The sheet apparatus 10 will be described later. First, the sheet moving apparatus 20 will be described.

  As shown in FIGS. 2 and 3, the seat moving device 20 can move the electric wheelchair 1 from the vehicle interior to the vehicle interior or vice versa, and vice versa. A longitudinal movement mechanism 21 that moves the apparatus 10 in the longitudinal direction of the vehicle, and a rotation mechanism that rotates the seat apparatus 10 between the position facing the front of the vehicle and the position facing the door opening when viewed from the seated person. 22 and a vehicle width direction moving mechanism 23 for moving the seat device 10 facing the door opening side to the outside of the passenger compartment by the rotating mechanism 22.

  The front-rear direction moving mechanism 21 is a mechanism that is attached to the floor of the vehicle body. The rotation mechanism 22 is attached on the front-rear direction movement mechanism 21, and the vehicle width direction movement mechanism 23 is attached on the rotation mechanism 22. ing. The front-rear direction moving mechanism 21 includes a slide rail, and can move back and forth in the vehicle interior. The rotation mechanism 22 is provided with disk-shaped gears in the upper and lower layers, and the sheet device 10 can be rotated by rotating the disk-shaped gears. The vehicle width direction moving mechanism 23 can move the seat device 10 out of the passenger compartment by a link mechanism 24 provided in a hierarchy rotated by the rotating mechanism 22.

  The vehicle width direction moving mechanism 23 is provided with a seat base 25 to which the electric wheelchair 1 is connected. When the electric wheelchair 1 returns from the outside of the passenger compartment, it is connected to the seat base 25 to The wheelchair 1 has wheels 1a stored therein and can be used as a seat device 10 in the vehicle interior. The seat base 25 is provided with a lock device 25a that locks the electric wheelchair 1 when the electric wheelchair 1 returns from outside the passenger compartment and is connected to the seat base 25.

  Further, the seat base 25 is provided with a reflection plate 25b at the rear end thereof so that a laser beam or the like emitted from the electric wheelchair 1 described later can be reflected. The electric wheelchair 1 can detect the seat base 25 and support the movement to the seat base 25 by detecting the laser beam reflected by the reflecting plate 25b by the light receiving portion of the electric wheelchair 1.

  The electric wheelchair 1 is provided with a laser light emitting unit 11 and an ultrasonic wave emitting unit 12 at the rear thereof, and detects the position of the seat base 25 of the vehicle 100 by emitting a laser when returning to the vehicle 100, thereby The distance to the seat base 25 can be determined. The laser light emitting unit 11 and the ultrasonic wave emitting unit 12 can swing, and can irradiate in the direction of the vehicle 100 even when the electric wheelchair 1 is oblique to the vehicle 100.

  Further, a laser light receiving unit 13 is provided next to the laser light emitting unit 11, and the laser light receiving unit 13 is a place where the emitted laser light is reflected and returned to the reflecting plate 25 b provided on the sheet base 25. The presence of the sheet base 25 is detected by receiving the light. Similarly, an ultrasonic detection unit 14 is provided next to the ultrasonic emission unit 12, and the ultrasonic detection is performed when the emitted ultrasonic wave is reflected back to the reflection plate 25 b provided on the sheet base 25. By detecting by the unit 14, the distance to the seat base 25 is grasped.

  The laser light emitting unit 11 and the ultrasonic wave emitting unit 12, the laser light receiving unit 13, and the ultrasonic wave detecting unit 14 are respectively disposed on the left and right sides of the rear part of the electric wheelchair 1.

  Next, the operation will be described with reference to FIG. First, when returning to the vehicle 100 from a position away from the vehicle 100, the electric wheelchair 1 needs to be moved backward and connected in order to approach the vehicle 100 to some extent and connect to the seat base 25. Become.

  Next, a button or the like (not shown) at hand is operated, and first, the laser is emitted from the laser emitting unit 11 as shown in FIG. At this time, the laser light emitting unit 11 can swing, and thus emits light while swinging. When the emitted laser beam is reflected by the reflecting plate 25b provided on the sheet base 25, the reflected light returns straight due to its property, and the laser receiving unit 13 receives the light. When the laser light receiving unit 13 receives the laser beam returned from the reflecting plate 25b, the electric wheelchair 1 can detect in which direction the seat base 25 connected to the vehicle 100 is present.

  The laser issuing unit 11 and the laser light receiving unit 13 are arranged at different heights on the left and right sides behind the electric wheelchair 1. Further, the reflector 25b provided on the sheet base 25 is also arranged so that the right and left are determined according to the heights of the laser issuing unit 11 and the laser light receiving unit 13.

  The electric wheelchair 1 that has detected the position of the seat base 25 by the laser then emits ultrasonic waves from the ultrasonic emission unit 12 as shown in FIG. Similar to the laser, the ultrasonic wave is reflected when it hits the reflection plate 25b provided on the sheet base 25. The reflected ultrasonic wave returns to the electric wheelchair 1 and is detected by the ultrasonic detector 14. When the ultrasonic detection unit 14 detects the ultrasonic wave returned from the reflection plate 25b, it is possible to detect the distance between the ultrasonic detection unit 14 and the reflection plate 25b.

  Since the ultrasonic wave distance can be determined, the distance between the both ends of the seat base 25 and the ultrasonic wave emission unit 12 and the ultrasonic wave detection unit 14 attached to the left and right is which of the electric wheelchair 1 is shorter and which is longer. The control circuit can discriminate.

  Thereafter, as shown in FIG. 4 (c), the distance is adjusted so that the distance between the both ends of the seat base 25 and the ultrasonic emission unit 12 and the ultrasonic detection unit 14 attached to the left and right is adjusted to the shorter one. Move the longer one (do not move the tire with the shorter distance, move the tire with the longer distance to equalize the distance on both sides). As a result, as shown in FIG. 4D, the electric wheelchair 1 can be moved to the position in front of the seat base 25, and can be connected to the seat base 25 if it falls straight backward thereafter.

  In this way, the position of the seat base 25 is detected by a laser, the distance from the seat base 25 is determined by ultrasonic waves, and the distance between the left and right ends of the electric wheelchair 1 and the left and right ends of the seat base 25 is equalized. The electric wheelchair 1 is positioned in front of the seat base 25. Therefore, after this control is completed, the occupant can be connected to the seat base 25 only by lowering the electric wheelchair 1 backward by manual operation, and the electric wheelchair 1 can be used as the seat device 10.

DESCRIPTION OF SYMBOLS 1 Electric wheelchair 1a Wheel 10 Seat apparatus 11 Laser light emission part 12 Ultrasonic emission part 13 Laser light reception part 14 Ultrasonic detection part 20 Sheet moving device 21 Front-rear direction moving mechanism 22 Rotating mechanism 23 Vehicle width direction moving mechanism 24 Link mechanism 25 Seat base 25a Lock device 25b Reflector 100 Vehicle

Claims (1)

An electric wheelchair that can be used as a wheelchair outside the passenger compartment and a seat device that can be used as a seat on which a passenger sits in the passenger compartment,
A seat moving device for moving the seat device between a vehicle interior and a vehicle exterior;
The seat moving device is provided with a seat base that is connected to the wheelchair and moves with the seat device after becoming the seat device.
A device for emitting laser light and ultrasonic waves is provided at the rear of the electric wheelchair, and the emitting device can be rotated within a range of a certain angle and can irradiate laser light and ultrasonic waves over a wide range. And
The seat base is provided with a reflector, and can reflect laser light and ultrasonic waves emitted from the rear part of the electric wheelchair,
The electric wheelchair can be guided to the front of the seat base by detecting the reflected laser light and ultrasonic waves with a light receiving portion provided at a rear portion of the electric wheelchair.

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