Patent ID: 7401717
Filing Date: 2008-07-22
Classification: B60N

Abstract:
1. An automatic lifting mechanism for motorcycle saddle, comprising: a first supporting arm connected to a saddle of a motorcycle and provided at two lateral ends with two perpendicularly bent sidewalls, a first one of said two sidewalls being provided at a central area with a round hole, and a second one of said two sidewalls being provided at a central area with a retaining hole; a second supporting arm connected to a body of said motorcycle and provided at two lateral ends with two perpendicularly bent sidewalls adapted to extend into an inner side of said two sidewalls of said first supporting arm; a first one of said two sidewalls of said second supporting arm being provided at a central area with a round hole to locate adjacent to said retaining hole on said first supporting arm, and a second one of said two sidewalls being provided at a central area with a retaining hole to locate adjacent to said round hole on said first supporting arm; at least one spiral spring positioned between said first and said second supporting arm and having a first and a second sideward extended terminal end elastically pressed against said first and said second supporting arm, respectively, so that said first and said second supporting arm could be sprung open while being pivotally connected with each other; and a damping device consisting of a sleeve, a damper, and at least one end plug; said sleeve being a cylindrical member adapted to mount in said spiral spring, said damper being mounted in said sleeve, and said at least one end plug being connected to at least one end of said damper, such that said damper is indirectly connected at two ends to said first and said second supporting arm; whereby when said saddle is unlocked, said at least one spiral spring provides a spring force to automatically pivotally turn and upward stretch said saddle open while said first and said second supporting arm are limited by said damping device in the course of pivotal turning, so that said saddle is sprung open or moved downward at a buffered speed without the risk of injuring a user due to a quick opening or closing thereof.