Torsion bar door check

摘要

A door check for an automobile has an arm with a cam formed between oppositely directed flanks. A unitary energy storage component cooperates with the arm to provide progressive resistance to opening and closing and a plurality of stable positions. The unitary energy storage component includes a pair of springs, each connected to shoes that bear against the flanks and load the springs in torsion as the shoes moves along the cam. The unitary energy storage component is formed as an integral unit to facilitate handling and assembly.

主权项

1. A door check for an automobile comprising:
a) a check arm having cam surfaces formed on oppositely directed flanks; b) a pair of shoes engaged with said cam surfaces; c) a unitary energy storage component containing a pair of torsion springs, each of said torsion springs having a pair of legs; d) each of the torsion springs supported by a respective one of a pair of mounting brackets; e) each leg of one of the torsion springs being connected to the leg of another of the torsion springs by a respective one of said pair of shoes, said torsion springs extending in opposite directions from the shoes, said springs, mounting brackets and said pair of shoes creating a single unitary component; f) the mounting brackets configured to allow rotary motion of the torsion springs relative to said mounting brackets; such that the shoes of the unitary energy storage component are operably engaged with the flanks of the check arm to accommodate relative sliding movement between the check arm and the unitary energy storage component, whereby, movement of the shoes along said flanks varies the spacing between said shoes and thereby the energy stored in the torsion springs.