| 摘要 |
PURPOSE:To make it possible to set an obstacle detection area optionally by detecting obstacles by turning a pair of bumper members provided in front and rear parts of the body of an unmanned carrying car according to the width of an object mounted on the unmanned carrying car and forming an obstacle detection area of required extent. CONSTITUTION:In the case where an object mounted on an unmanned carrying car is narrower than the width of the car body 1, pairs of front and rear bumpers 11-12, 13-14 are made to the state of shrinkage shown by attenuate long and short dash lines. When an object wider in width than the car is loaded, servo motor 31 is driven normally and pairs of front and rear bumpers 11-12, 13-14 are rotated in opposite direction and set to broadening position. At this broadening position, transmitting and receiving of light is made between light emitting elements 11b, 12c, 14b, 13c and light receiving elements 12e, 14d, 13e, 11d arranged at the tips 11a-14a of rodlike bumpers 11a-14a, and an obstacle detection area wider than the width of the load shown by broken lines is formed around the unmanned running car.
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