Patent ID: 9228861
Filing Date: 2016-01-05
CPC Classification: G01D

Claim Text:
1. A rotation sensing apparatus comprising: a rotation sensing device that senses a rotational state of a rotatable body and outputs a rotation sensing signal; a signal transmitting member that is electrically connected to the rotation sensing device and transmits the rotation sensing signal to an external device; an internal structure that holds a portion of the signal transmitting member and the rotation sensing device; and a rib that is molded on an outer peripheral surface of the internal structure, wherein: the internal structure includes an installing portion, which is used to install the rotation sensing apparatus, and a holding portion, which holds the rotation sensing apparatus at a time of installing the rotation sensing apparatus, wherein the internal structure is integrally molded with a resin material; a plurality of recesses is formed between the installing portion and the holding portion; the holding portion includes at least one planar surface part; one of the at least one planar surface part is parallel to a sensing surface of the rotation sensing device or is angled to the sensing surface by a predetermined angle; a portion of the internal structure, at which the plurality of recesses is molded, is molded such that the plurality of recesses and a projection, in which none of the plurality of recesses is formed, are alternately arranged one after another in a circumferential direction, and the portion of the internal structure is formed into a cylindrical configuration; and the projection and the rib are molded along a corresponding common line.