Torsion spring mounting apparatus

Details Torsion spring mounting apparatus Torsion spring mounting apparatus

1989-07-13

1990-10-02

Watson, Robert C.

Metal working

Means to assemble or disassemble

Spring applier or remover

B23P 1904

Patent

active

049598970

ABSTRACT:
A torsion spring mounting apparatus mounts a torsion spring on a spring support. The torsion spring comprises a leg portion, a coiled portion one end part of which extends to the leg portion, and an engagement portion which extends to the other end part of the coiled portion and which is bent in the radial direction of the coiled portion. The spring support comprises a cylindrical shaft onto which the coiled portion is to be fitted, and a coil engaging protrusion embedded in the circumferential surface of the shaft such that the coil engaging protrusion is normal to the shaft. A spring movement device grasps the torsion spring, and fits the coiled portion onto the shaft by moving the torsion spring along the shaft so that the engagement portion does not overlap the coil engaging protrusion. A push device pushes the leg portion of the torsion spring, which has been fitted onto the shaft, in order to cause the torsion spring to rotate along the circumferential direction of the shaft and make the engagement portion engage with the coil engaging protrusion.

REFERENCES:
patent: 4509240 (1985-04-01), Tezuka
patent: 4653185 (1987-03-01), Kajima et al.

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