FOLDABLE BICYCLE WITH X TYPE AUXILIARY FRAME REDUCING DIMENSIONS IN LONGITUDINAL DIRECTION

• Main Author: NAKAYAMA YUTAKA
• Format: Patent
• Language: English; Japanese
• Published: 16.11.2017
• Subjects: CYCLE AXLE SUSPENSIONS; CYCLE FRAMES; CYCLE SIDE-CARS, FORECARS, OR THE LIKE; CYCLE STEERING DEVICES; CYCLES; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; PERFORMING OPERATIONS; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FORCYCLES; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a foldable bicycle with an auxiliary frame capable of preventing a front frame and a rear frame from shifting out of a surface therebetween, as well as allowing them to approach each other in a vehicle axis direction to be smoothly folded in an appropriate position without especially forcibly fitting in.SOLUTION: A foldable bicycle comprises an auxiliary frame having an X shaped crossing configuration to pull a handle bar, a front frame 2, a saddle, and a rear frame 3 together to reduce dimensions in a vehicle axis direction. When expanded, the main frame 4 is substantially horizontally expanded, to form a frame with the auxiliary frame maintaining a distance between the front frame 2 and the rear frame 3. A handle pipe and a sheath pipe are connected with the front frame through a hinge. When folded, the handle pipe is rotated around the hinge to move to be adjacent to the front frame to align a front wheel and a rear wheel with axes thereof in parallel, thereby, allowing the bicycle to be pulled to easily move. Bundling the front frame 2, the rear frame 3 and the main frame 4 to aggregate the front and rear wheels in a lower part can reduce the overall size to facilitate storage, transfer and bringing the bicycle into a public transportation.SELECTED DRAWING: Figure 1 【課題】補助フレームにより、フロントフレームとリアフレームを面外にぶれるのを防ぐとともに、特に力を入れてはめ込んだりすることなく車軸方向に近接させ、スムーズに正しい位置に収める。【解決手段】ハンドル、フロントフレーム２と、サドル、リアフレーム３を、Ｘ字型に交わる補助フレームで引き付け車軸方向の寸法を縮小する。展開時はメインフレーム４が、ほぼ水平に展開し、補助フレームとともに、２，３間の距離を保持しフレームを形成する。また、ハンドルパイプを鞘管と、フロントフレームはヒンジで連結され、折畳み時はヒンジの周りにハンドルパイプを回動し、フロントフレームの横に移動させ前後輪同軸並列に位置させることで、引っ張って楽に移動できる。フロントフレーム２リアフレーム３メインフレーム４を束ねて、前後輪を下部に集約することで、全体を縮小でき、収納、移動、公共交通機関への持ち込みなどで扱いやすい。【選択図】図１