| 摘要 |
PURPOSE:To make sure of collision detecting motion by a pressure sensitive sensor, by installing a magnet and a magnetic piece in each safety bumper fitted with the pressure sensitive sensor, and at the time of a collision between safety bumpers themselves, attracting the magnet and the magnetic piece to each other, thereby pressing the sensor in between. CONSTITUTION:Each of safety bumpers 12 and 12' having a collision detecting function are attached to each edge of car bodies 11 and 11' of each unmanned conveying car. And, in each of these safety bumpers 12 and 12', there are provided with a vertical pair of pressure sensitive sensors at the surface side of each elastic body 13, and the whole circumference of each of them is covered with a softening material 15, while each seat plate 16 locked to the backside is attached to these cars 11 and 11' with each screw 17. In the above-mentioned constitution, plural magnets 20 are interposed between the elastic body 13 and the pressure sensitive sensor 14, and plural magnetic pieces 21 are set up between the covering material 15 and the pressure sensitive sensor 14. And, at the time of contact between these safety bumpers 12 and 12', the magnet 20 and the magnetic piece 21 are attracted to each other, pressing the pressure sensitive sensor 14 in between, thus accurate collision detection is carried out.
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