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Pulsar Ring of Magnetic Rotary Encoder

  • US 20090096444A1
  • Filed: 03/30/2006
  • Published: 04/16/2009
  • Est. Priority Date: 04/01/2005
  • Status: Active Grant
First Claim
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1. A pulsar ring of a magnetic type rotary encoder comprising:

  • an annular holder made of a metal; and

    a pulsar main body integrally formed on the holder by a magnetic rubber material,wherein said holder is provided with a disc portion to which said pulsar main body is bonded, a mounting tube portion having a smaller diameter than an outer diameter of the disc portion and being fixed to a rotating body, a fold-back portion folded back to an inner circumferential side from an outer circumference of said disc portion so as be formed in a curved shape having a round-shaped outer circumferential convex surface, and an intermediate portion extending to said mounting tube portion in such a direction as to be apart from said disc portion via the fold-back portion, and wherein an outer circumferential portion of the pulsar main body is provided with a guide portion which is formed so as to surround the round-shaped outer circumferential convex surface of the fold-back portion in the holder and is capable of coming into close contact with an inner circumferential surface of a circumferential wall portion of a pressure inserting jig with a suitable collapsing margin.

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