Abstract: Provided are: a battery case structure for electric-powered vehicles wherein restrictions on the size or the like of a battery mountable on electric-powered vehicles are alleviated, and the attaching/detaching operability is improved; and an electric-powered vehicle. A battery case structure is equipped with: a cover member which is disposed below the center in the longitudinal direction of a main frame and rocks in the transverse direction of the vehicle; and a lower frame which is connected to the main frame, and is disposed in such a manner as to go around the bottom of the cover member. A battery is detachably inserted into the cover member through the detachable opening separated from the main frame. When the detachable opening is brought close to the main frame, the battery housed in the cover member is supported on the lower frame and housed between the lower frame and the main frame.

Abstract: Provided are: a battery case structure for electric-powered vehicles wherein restrictions on the size or the like of a battery mountable on electric-powered vehicles are alleviated, and the attaching/detaching operability is improved; and an electric-powered vehicle. A battery case structure is equipped with: a cover member which is disposed below the center in the longitudinal direction of a main frame and rocks in the transverse direction of the vehicle; and a lower frame which is connected to the main frame, and is disposed in such a manner as to go around the bottom of the cover member. A battery is detachably inserted into the cover member through the detachable opening separated from the main frame. When the detachable opening is brought close to the main frame, the battery housed in the cover member is supported on the lower frame and housed between the lower frame and the main frame.

Abstract: An omnidirectional vehicle 1 includes: a main wheel 3 which is able to be driven in all directions; a base 2 which supports the main wheel 3; and a sub wheel 4 which is connected to the base 2 via an arm 15 and is grounded at a position apart from the ground contact point of the main wheel 3. The sub wheel 4 is attached so as to circularly move about the center of rotation of the main wheel 3.

Abstract: An inverted pendulum type vehicle (1) includes a propulsion unit (50) provided in a lower part of a vehicle body to actuate a main wheel (52), a drive unit (90, 130) provided in a vertically intermediate part thereof and a seat (200) provided in an upper part of the vehicle body. A battery case (251) is mounted in a part of the vehicle body above the main wheel and behind the drive unit. The battery case is provided with an opening (257) extending from an upper part thereof to a lower end of a rear part thereof. A lid (260) hinged to the battery case selectively covers the upper end of a battery (250) received in the battery case. The battery is retained in the battery case with the help of suitable engagement arrangements (262, 263, 270, 271, 273, 274).