PROBLEM TO BE SOLVED: To provide a truck or a wheelchair capable of continuously switching flat land traveling, stair traveling, and slope traveling while keeping the loading space of the truck or the seat surface of the wheelchair horizontal.SOLUTION: During flat land traveling, traveling is performed on four wheels as in the case of a conventional truck or wheelchair. During stair or slope traveling, traveling is performed while adjusting the loading space or the seat surface of the wheelchair flat by using the link mechanism of the loading space (seat surface), a handle, a slide arm, and a support arm. Switching between the flat land traveling and the stair or slope traveling can be continuously performed by a handle operation.COPYRIGHT: (C)2014,JPO&INPIT【課題】台車の荷台や車椅子の座面を水平に維持したまま、平地走行と階段走行やスロープ走行の切り替えを連続的に行うことができる台車や車椅子を提供することを目的とする。【解決手段】平地走行時は従来の台車や車椅子と同じように4輪で走行し、階段やスロープ走行時には、荷台(座面)、ハンドル、滑走アーム、支持アームのリンク機構を使って荷台または車椅子の座面を水平に調整しながら走行する。平面走行と階段やスロープ走行の切り替えはハンドル操作で連続的に行うことができる台車や車椅子を提供する。【選択図】図1