ELECTROMAGNETIC CLUTCH AND MANUFACTURING METHOD THEREOF

摘要

A ring insertion groove is formed between adjacent two of circular plates, which are made of a magnetic material and are arranged concentric with each other, and a ring, which is made of a non-magnetic material and has a larger deformation resistance in comparison to the magnetic material of the plates, is press fitted into the ring insertion groove. Thereafter, a peripheral part around an opening of the ring insertion groove is plastically flowed, so that a compression stress is left in the ring.

主权项

1. An electromagnetic clutch comprising:
a driving-side rotatable body that is rotated by a rotational drive force outputted from a drive source; and a driven-side rotatable body that is rotated by the rotational drive force transmitted from the driving-side rotatable body when the driven-side rotatable body is attracted to and is coupled with the driving-side rotatable body with an electromagnetic force, wherein: at least one of the driven-side rotatable body and the driving-side rotatable body includes:
a plurality of plates, which are respectively configured into a circular plate form and are made of a magnetic material, wherein the plurality of plates is concentric with each other; and
a ring, which is made of a non-magnetic material having a deformation resistance that is larger than a deformation resistance of the magnetic material of the plurality of plates, wherein the ring is placed between adjacent two of the plurality of plates; and the adjacent two of the plurality of plates and the ring are joined together while leaving a compression stress in the ring by plastically flowing the magnetic material of the adjacent two of the plurality of plates.