| 摘要 |
PURPOSE:To enable to perform the movement on the stairs speedily and securely by providing a traveling device main body with a ground plane to be grounded on the stair tread and moving simultaneously the front and back leg wheels with joints under its ground condition. CONSTITUTION:In climbing stairs, first of all, approaching the periphery of the stair with one's back toward the stair, the supporting base bottom part 7 of a main body is grounded turning slightly a first and third joints 12, 32. Secondly, a brace 20 is grounded turning the first and second joints 12, 15 so as to raise a front wheel 16 as well as turning the third and fourth joints 32, 35 so as to place a back wheel 41 on the first step of the stair tread. Thirdly, the main body 1 is drawn to the stair, the back wheel 41 is placed on the second tread, and the main body 1 is placed on the first tread being supported by the back wheel 41 and the brace 20. Lastly, the back wheel 41 is placed on the third tread, and the main body 1 is placed on the second tread being supported by the back wheel 41 and the brace 20. This action is successively repeated to climb the stairs. |
