JPH06190007A - Safety stopping apparatus for motor-driven wheelchair utilizing objective sensor - Google Patents

Abstract

PURPOSE:To make it possible to use a motor-driven wheelchair more safely without collision to things in a narrow building and in a room in an ordinary motor-driven wheelchair wherein a driving force for movement can be conveniently obtd. by a simple operation and on the other hand, there exists possibility of a collision accident caused by an operational mistake. CONSTITUTION:An objective sensor and a device releasing an electric source or driving at a control box of a motor-driven wheelchair based on the input are mounted on an ordinary motor-driven wheelchair. As the electric source or the driving of the motor-driven wheelchair can be released by the input of the mounted objective sensor, when it is moved, it is possible to prevent the wheelchair from colliding with the surrounding things and to ensure better safety. In addition, it is also possible to return it the original condition by means of a switch at hand.

Description

Detailed Description of the Invention

[Industrial application] Scope of manufacturing new wheelchairs and scope of remodeling already manufactured wheelchairs

2. Description of the Related Art A general electric wheelchair is heavy, and a driver may collide with something around him due to an accident during operation.
There is a problem with safety. Further safe operation becomes difficult depending on the degree of the driver's disability. There is no safe electric wheelchair that detects things around it and stops them.

A general electric wheelchair can easily obtain power for movement by a small operation. On the other hand, there is concern about collision accidents due to operational mistakes. The purpose is to be able to use an electric wheelchair safely in a small building, even in a room without hitting anything.

In order to achieve the above-mentioned object, a general electric wheelchair is equipped with an objective sensor and a device for releasing power or driving at the control box of the electric wheelchair by its input.

[Function] Since the power supply or the drive of the electric wheelchair can be released by the input of the attached object sensor, it is possible to prevent the collision with the surrounding objects at the time of operation and to secure the safety. Also, it can be left as it is by the switch at hand.

EXAMPLE As shown in FIG. 1a, the rear portion of the body frame (front,
A non-contact objective sensor that uses light, ultrasonic waves, etc., is attached to multiple directions such as left and right. Device A is shown in FIG.
In the gap inside the control box of b or outside,
It was attached so that it could be inserted into the power control signal circuit of an electric wheelchair. By inputting the objective sensor, a small relay of device A (which does not have to be a large capacity because the electric circuit for the operation signal is cut off can be operated), and the power supply in the control box on the side of the main body electric wheelchair is operated. The operation of the electric wheelchair can be stopped by cutting off the switch or drive signal. Also, in device A, the switch C placed in parallel with the small relay circuit is turned to "to cancel the sensor operation" so that the operation of the small relay is ignored (that is, the role of the relay operation by the sensor is ignored). It is possible to restore the signal interruption (connect it as it is) and use it as an original electric wheelchair. Therefore, the electric wheelchair detects an object (obstacle) during operation and stops the operation, and thereafter the operation is not disabled.

EFFECTS OF THE INVENTION It can be easily attached to a general electric wheelchair, and safe driving operation is possible without hitting an object. It has become possible to extend the range of use of electric wheelchairs by enabling safe driving even for people with severe disabilities who have had difficulty driving electric wheelchairs.

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[Procedure amendment]

[Submission date] December 18, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Added

[Correction content]

[Brief description of drawings]

[Figure 1] Three-dimensional drawing

[Figure 2] Elliptical and physical wiring diagram

[Explanation of reference symbols] Fig. 1 a Rear objective sensor attached to a commercially available electric wheelchair (for sensing when there is an obstacle in a certain direction behind the wheel) b Control box provided (device in this box) FIG. 2 shows an example of the internal structure of the device A and the wiring of the substance.

Claims (2)

[Claims] 1. A safety stop device for an electric wheelchair using a non-contact type objective sensor. 2. A safety stop device for a mounted electric wheelchair.