JP2010284469A - Electric wheelchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device capable of preventing runaway by detecting an operation error of a joystick operation lever in an electric wheelchair with the joystick. <P>SOLUTION: The electric wheelchair includes a system having a self-holding circuit and an operation lever used added to the joystick, and a system for electrically detecting the inclination of the joystick operation lever to intercept the self-holding circuit. The abnormal motion of the joystick operation lever is thereby detected to stop the runaway of the electric wheelchair. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a safety device for an electric wheelchair.

  Now that we are facing a super-aged society, it is an important social issue to create an environment in which elderly people can easily live. Among elderly people, there are elderly people who have no problem with motor functions such as walking, but there are many elderly people who are difficult to walk and difficult to walk and move even at short distances. In addition, recently, social momentum has been increasing for the development of a barrier-free environment for persons with disabilities in, for example, walking. Under such circumstances, wheelchairs are often used for elderly people or people with walking disabilities, but electric wheelchairs are generally expensive and are not readily available. Other reasons that do not become widespread include the inability to operate safely for elderly people or people with walking disabilities, and insufficient safety functions.

  As a conventional example of an electric wheelchair that can be operated safely or an electric wheelchair with safety measures, an electric wheelchair that is controlled by detecting an obstacle with an objective sensor has been developed (see Patent Documents 1 to 3). However, such an objective sensor is expensive and has problems such as further complicated operation. For this reason, the practical use to the general purpose machine of an electric wheelchair is prevented for elderly people or a person with a walking disorder.

JP 2006-334082 A JP 2005-293154 A JP 2004-321722 A

  The present invention has been made in view of the above problems, and its purpose is that it can be put into practical use as a general-purpose machine because of its simple configuration, and can be operated for safe driving, and further requires a safety function. It is another object of the present invention to provide an electric wheelchair control device for an elderly person or a handicapped person that works sufficiently.

  As a result of earnestly examining the above problems, the inventors of the present invention accidentally operated the wheelchair in the direction of further accelerating when the driver had fear during driving. I got the conclusion that. One such solution and the development of an auxiliary device that prevents malfunction and stops safely have been desired.

In particular, in an electric wheelchair that is operated using a joystick, the brain's way of thinking for movement that the original human thinks does not necessarily match the way the joystick is moved. It is possible to induce.

The present invention relates to an emergency safety device for an electric wheelchair using a joystick.

In the operation of the joystick, when the driver feels some fear, as a wrong operation to be performed, due to extreme tension, a phenomenon that the joystick operation lever can not be moved while being held and cannot be brought to the stop position occurs To do. In addition, the joystick operating lever is further tilted forward so that it cannot be moved in the full throttle state, resulting in a collision. Detects such a condition and automatically

The joystick 5 can output a voltage according to the angle at which the operation lever 7 is tilted as its operation output. Now, when the operation lever 7 is tilted more than a certain angle and becomes close to the full throttle state, the self-holding circuit 4 can be shut off and the electric wheelchair can be stopped as shown in the block diagram of FIG. . In order to operate the electric wheelchair again, another start switch 3 is turned on.

The invention's effect

According to the present invention, in an electric wheelchair having a joystick, it is possible to prevent runaway due to an operation error due to extreme tension of the driver and contribute to safety.

ADVANTAGE OF THE INVENTION According to this invention, the runaway accident by malfunctioning can be prevented in an electric wheelchair. Moreover, it becomes possible to ensure the safety | security of all the electric wheelchairs cheaply by adding to the existing electric wheelchair.

Example of Joystick Operation Lever Added to Electric Wheelchair with Joystick (Example 1) Structure 1 of safety device added to electric wheelchair with joystick Structure 2 of safety device added to electric wheelchair with joystick

Claims (2)

A system with an operation lever and a self-holding circuit that is used in addition to a joystick in an electric wheelchair A system that electrically detects the tilt of the joystick control lever and shuts off the self-holding circuit in an electric wheelchair.

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