Abstract: A magnetic encoder structure according to an exemplary embodiment of the present invention includes: a back plate; and a magnet rubber which has a ring shape, and is vulcanized and attached to a rear surface of the back plate, in which the magnet rubber has a plurality of protruding portions which protrudes from an adhesive surface that is attached to the back plate, and groove portions which are formed between the protruding portions, and the protruding portions and the groove portions are repetitively disposed in a rotation direction of the magnet rubber.

Abstract: A magnetic encoder structure according to an exemplary embodiment of the present invention includes: a back plate; and a magnet rubber which has a ring shape, and is vulcanized and attached to a rear surface of the back plate, in which the magnet rubber has a plurality of protruding portions which protrudes from an adhesive surface that is attached to the back plate, and groove portions which are formed between the protruding portions, and the protruding portions and the groove portions are repetitively disposed in a rotation direction of the magnet rubber.

Abstract: The present invention relates to a fastening structure for release prevention, and more particularly, to a fastening structure for release prevention which may prevent a bolt and a nut from being released due to an external impact, and provides a fastening structure for release prevention including: a release prevention washer which is formed in a ring shape, and has a plurality of projections that protrudes on both surfaces of the release prevention washer in a radial direction from a center; and a nut which has a plurality of grooves that corresponds to the plurality of projections formed on the surfaces of the release prevention washer.