To prevent an overturn accident caused by unstable driving of a bicycle with an infant seat.SOLUTION: The bicycle with infant seat includes an infant seat positioned in the substantially middle of a line connecting the center of a front wheel with the center of a gear crank and mounted on a down pipe to orient a driver with an outer shell bottom part positioned downward a little of the line, thereby lowering the center of gravity, and caster auxiliary wheels provided one by one on the left and right to obtain upright stability through a pedestal provided therebelow. In the case of a bicycle of three-seater with another infant riding, rear wheels of the two-seater type bicycle are provided one by one on the left and right and a rear infant seat is mounted just above a rear wheel drive gear in the middle of a part sandwiched between both the rear wheels to lower the center of gravity, thereby achieving driving stability.SELECTED DRAWING: Figure 1
【課題】幼児シート付自転車の不安定走行に起因する転倒事故を防ぐ【解決手段】前輪とギヤクランクの中心を結ぶ線のほぼ中間にあって、外殻底部がこの線のやや下に位置して運転者を志向するように幼児シートをダウンパイプに取り付けて重心を低くし、さらにその下部の台座を介して直立安定性を得るために左右に各一個のキャスター補助輪を設ける。もう一人の幼児を乗せて三人乗りとする場合には、上記の二人乗り構造の自転車の後輪を左右各一個とし、両後輪に挟まれた中間部分で後輪駆動ギヤのすぐ上に後部幼児シートを設置して重心を低くすることで走行の安定性を得る。【選択図】図1
BICYCLE WITH INFANT SEAT
幼児シート付き自転車
2020-05-21
Patent
Electronic Resource
Japanese
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