Tool and method for measuring perpendicularity and angle of femur of vehicle crash dummy
AssigneesChina Automotive Technology and Research Center Co., Ltd, Catarc Automotive Test Center (Tianjin) Co., Ltd
InventorsZhixin Liu, Mei Lu, Weidong Liu, Yongqiang Wu, Zhi Li, Zihe Meng, Kai Wang, Hanxiao Zhang, Ye Hao, Manli Liu
Life of this patent
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Abstract
Disclosed are a tool and a method for measuring a perpendicularity and an angle of a femur of a vehicle crash dummy. The tool includes: a base, where the base is provided with a guide ring gear; and a clamp assembly, where the clamp assembly is configured to clamp a femur part. A measurement assembly can measure the perpendicularity and the angle of the femur part conveniently.
Claims9
A tool for measuring a perpendicularity and an angle of a femur of a vehicle crash dummy, comprising:
- a base, wherein the base is provided with a guide ring gear;
- and
- a clamp assembly, wherein
- the clamp assembly comprises a rotary table that is rotatably connected to and concentrically arranged with the guide ring gear;
- the rotary table is provided with a drive member, and the drive member is provided with a first drive end and a second drive end that synchronously rotate;
- and the first drive end is provided with a rotary gear, the rotary gear is in meshing connection to the guide ring gear, and the second drive end is provided with a worm;
- the rotary table is further provided with a worm ring gear that is concentrically arranged with and rotatably connected to the rotary table, and the worm ring gear meshes with the worm;
- the worm ring gear is internally provided with an inner ring gear, an inner side of the worm ring gear is provided with a limit assembly, and the limit assembly is provided with a limit end abutting between two adjacent tooth tips of the inner ring gear;
- and the inner ring gear is in internal meshing connection to at least three cams that are evenly distributed, and an accommodation space is formed among the cams for accommodating a positioning portion of a femur part;
- under the condition that the drive member drives the rotary gear and the worm to synchronously rotate, the rotary table is driven to rotate relative to the guide ring gear, and simultaneously, the worm ring gear and the inner ring gear are driven to rotate, such that the cams are driven to rotate to clamp the positioning portion of the femur part;
- and
- the tool further comprises a measurement assembly, wherein the measurement assembly is arranged on the base;
- and
- the measurement assembly comprises:
- a first distance measurement member, wherein the first distance measurement member is provided with a first measurement end, and the first measurement end is configured to measure a distance between the first measurement end and a femoral connection surface of the femur part;
- and
- at least two second distance measurement members, wherein the second distance measurement member is provided with a second measurement end, and the second measurement end is configured to measure a distance between the second measurement end and a knee joint connection surface of the femur part.
Dependencies are inferred from the claim text.