Patent ID: 9273947
Filing Date: 2016-03-01
CPC Classification: F16C,G01B,G01L,H02K

Claim Text:
1. A sensing magnet apparatus for a motor, the apparatus comprising: a plate inserted by a rotation shaft; a sensing magnet so installed as to surface-contact a surface of the plate, formed at a position near a periphery of a main magnet, and formed at an inner side of the main magnet with a sub magnet; and a separation inhibition unit physically coupling the plate and the sensing magnet to maintain a coupled state between the plate and the sensing magnet, wherein the separation inhibition unit includes a first grip unit formed with both the plate and the sensing magnet, and a second grip unit formed with both the plate and the sensing magnet, wherein the first grip unit includes a grip rib extensively formed at a periphery of the plate, the grip rib bent to a direction facing the sensing magnet and formed thereinside with an accommodation groove unit; and a fixing protrusion formed at the sensing magnet wherein the fixing protrusion is disposed to correspond to the grip rib to be inserted into the accommodation groove unit; and wherein the second grip unit includes a bending protrusion formed on the periphery of the plate at an opposite side of a formed part of the grip rib, and a lug accommodation groove formed at a position corresponding to that of the bending protrusion of the sensing magnet for the bending protrusion to be fixed and accommodated by being bent and caulked; and wherein the first grip unit and the second grip unit are of different shapes.