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    • 34. 发明专利
    • Dropout prevention device of the trailer
    • JP5344896B2
    • 2013-11-20
    • JP2008315264
    • 2008-12-11
    • Udトラックス株式会社
    • 博 三宅
    • B62D53/10B60D1/28B62D53/08
    • PROBLEM TO BE SOLVED: To prevent a trailer from falling from a tractor. SOLUTION: This falling prevention device 30 includes a trailer connection switch 32 in which a contact point is closed when a king pin of the trailer is locked to a coupler of the tractor, a normally-opening type trailer detection relay 36 in which a contact point is closed when a prescribed voltage is applied to a coil, a normally-closing type trailer connection confirmation relay 38 in which a contact point is opened when a prescribed voltage is applied to a coil, and an information module 34 for applying a prescribed voltage of a battery 42 to the coil of the trailer detection relay 36 when it is detected that a control system of the tractor is connected to the trailer. The battery 42 is connected to the coil of the trailer connection confirmation relay 38 via the contact point of the trailer connection switch 32 and connected to an input terminal of a transmission electronic control device 46 receiving a shift inhibition command to at least a forward step via contact points of the trailer detection relay 36 and the trailer connection confirmation relay 38. COPYRIGHT: (C)2010,JPO&INPIT