PROBLEM TO BE SOLVED: To provide a driving and steering device for a vehicle including a driving wheel performing driving and steering, the driving and steering device enabling an advancing direction of the driving wheel performing driving and steering to be changed without changing the position of the driving wheel, and the driving and steering device being made compact.SOLUTION: A driving and steering device for a vehicle including a driving wheel 13 performing driving and steering includes: a ring gear 15 in a circular ring shape, which is disposed turnably with respect to a vehicle body and has engaging teeth 15f formed on the circumference thereof a support shaft extended from the inside of the circular ring of the ring gear 15 toward the rotation center of the ring gear a driving power source 14 for driving the driving wheel 13 a steering power source 16 for driving the ring gear 15 and a gear transmission mechanism capable of transmitting power from the steering power source 16 to the ring gear 15. The driving wheel 13 is disposed in such a way that the shaft thereof is in parallel with the disposition surface of the ring gear 15 within the circular ring of the ring gear 15, and is freely turnably supported by the support shaft.COPYRIGHT: (C)2013,JPO&INPIT【課題】駆動と操舵とを行う動輪を備える車両用駆動操舵装置において、駆動と操舵とを行う動輪の位置を変えることなく進行方向を変換し得ると共に、小型化を図ること。【解決手段】駆動と操舵とを行う動輪13を備える車両用駆動操舵装置であって、車両本体に対して回動可能に配設され、円周上に噛合歯15fを形成した円環形状のリングギヤ15と、リングギヤ15の円環内からリングギヤの回転中心に向かって延出する支持軸と、動輪13を駆動する駆動用動力源14と、リングギヤ15を駆動する操舵用動力源16と、操舵用動力源16からリングギヤ15に動力伝達可能な歯車伝達機構とを備え、動輪13は、リングギヤ15の円環内に軸をリングギヤ15の配設面と平行にして配置されかつ支持軸により回動自在に支承される。【選択図】図5
