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Invention Application
WO2023085174A1 板ばね装置 审中-公开

板ばね装置
Abstract:
この板ばね装置（１）は、板ばね本体（１１）と、第１目玉部（１２）と、第２目玉部（１３）と、連結片（１４）と、を備え、第１目玉部は、車体（Ｂ１）に、板ばね本体の幅方向に延びる第１軸線（Ｏ１）回りに回転可能に連結され、第２目玉部は、連結片に、幅方向に延びる第２軸線（Ｏ２）回りに回転可能に連結され、板ばね本体における長手方向の中央部領域が車軸を支持し、板ばね本体は、上方に向けて撓み変形可能に設けられ、板ばね本体が上方に向けて撓み変形する過程において、板ばね本体における第２目玉部との接続部分（１１ａ）が、当初、長手方向に変位する向き（ｘ１）に、接続部分が、連結片の弾性復元力により付勢されている。
Abstract(English):

A leaf spring device (1) comprises a leaf spring body (11), a first eye part (12), a second eye part (13), and a coupling piece (14). The first eye part is rotatably coupled to a vehicle body (B1) about a first axis (O1) extending in a width direction of the leaf spring body, and the second eye part is rotatably coupled to the coupling piece about a second axis (O2) extending in the width direction. A central portion region of the leaf spring body in the longitudinal direction supports an axle, and the leaf spring body is provided in a manner allowing flexible deformation in the upward direction. During the process of the leaf spring body flexibly deforming upward, a connection portion (11a), of the leaf spring body, that connects with the second eye part is biased by the elastic restoral force of the coupling piece in the direction (x1) where the connecting portion initially displaces in the longitudinal direction.

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