Electromagnetic clutch
First Claim
1. An electromagnetic clutch comprising:
- an electromagnet,a driving member for receiving a revolving force and forming a magnetic yoke, said driving member having a touching part, said magnetic yoke being magnetically coupled to said electromagnet,a driven member for transmitting revolving power to a load to be connected thereto,at least two armatures of substantially ring shape of different sizes, including an inner armature and an outer armature disposed concentrically to each other, each said armature having clutching faces opposing to said touching part,each said armature being connected to said driven member through a spring member, said spring member connecting said inner armature having a larger compliance than that of said spring member of said outer armature, whereby said two armatures are operable independently of one another in response to energization and deenergization of said electromagnet to allow said inner armature to transmit revolution torque prior to the outer armature.
1 Assignment
0 Petitions
Accused Products
Abstract
An electromagnetic clutch comprises a driving member (1) comprising a pulley yoke (105) and a touching part (103), an electromagnet (2) magnetically coupled to the yoke (105), a driven member (4) to be connected to a shaft of a load machine and having at least two ring-shaped armatures, an inner armature (7) and an outer armature (8) independent movably connected by a spring member (5) to said driven member (4); and by making the attracting motion characteristic of the two armatures different from each other, a clutching face of the inner armature (7) firstly contact the touching part (103) and that of the outer armature (8) subsequently contact the same, thereby attaining gradual and gentle coupling.
14 Citations
10 Claims
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1. An electromagnetic clutch comprising:
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an electromagnet, a driving member for receiving a revolving force and forming a magnetic yoke, said driving member having a touching part, said magnetic yoke being magnetically coupled to said electromagnet, a driven member for transmitting revolving power to a load to be connected thereto, at least two armatures of substantially ring shape of different sizes, including an inner armature and an outer armature disposed concentrically to each other, each said armature having clutching faces opposing to said touching part, each said armature being connected to said driven member through a spring member, said spring member connecting said inner armature having a larger compliance than that of said spring member of said outer armature, whereby said two armatures are operable independently of one another in response to energization and deenergization of said electromagnet to allow said inner armature to transmit revolution torque prior to the outer armature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification