# US 2019/0379261 A1 · Sensing magnet assembly, rotor position sensing apparatus, and motor including same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0379261 A1 - Document ID: US20190379261A1 - Status: Published application - Kind: A1 - Application number: 16/477,350 - Filed: 2018-01-11 - Published: 2019-12-12 - Earliest claimed: 2017-01-19 - Assignees: LG Innotek Co., Ltd. - Applicants: LG Innotek Co., Ltd. - Inventors: Yong Joo KIM; Se Jong KIM - Web page: https://patentgrep.com/patent/US20190379261A1 ## CPC - H02K 11/215: Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements - B62D 5/04: electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear - G01D 5/2066: {by movement of a single coil with respect to a single other coil} - G01D 5/24442: {by mounting means} - G01D 5/2451: {Incremental encoders (G01D5/2454 takes precedence)} - H02K 1/278: Surface mounted magnets; Inset magnets - H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) - H02K 29/08: using magnetic effect devices, e.g. Hall-plates, magneto-resistors (H02K29/12 takes precedence) - B62D 5/0481: {monitoring the steering system, e.g. failures} - H02K 1/276: Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] - H02K 5/1732: {radially supporting the rotary shaft at both ends of the rotor (H02K5/1737 takes precedence)} - H02K 11/30: Structural association with control circuits or drive circuits - H02K 2203/03: Machines characterised by the wiring boards, i.e. printed circuit boards or similar structures for connecting the winding terminations - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) - G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR ## Abstract An embodiment relates to a sensing magnet assembly and a motor including the same, the sensing magnet assembly comprising: a sensing plate; a sensing magnet disposed on the plate; and an adhesive tape disposed between the sensing plate and the sensing magnet so as to fix the sensing magnet to the sensing plate, wherein the sensing plate includes a main body in which the adhesive tape is disposed, the main body includes a seating surface and a plurality of grooves or holes, and one side of the adhesive tape is disposed on the seating surface. Accordingly, the adhesive strength between the sensing magnet and the sensing plate can be improved. ## Claims ### Claim 1 A sensing magnet assembly comprising: a plate; a magnet disposed on the plate; and an adhesive tape disposed between the plate and the magnet so as to fix the magnet to the plate, wherein the plate includes a main body on which the adhesive tape is disposed, wherein the main body includes a seating surface and at least one groove or hole, and one surface of the adhesive tape is disposed on the seating surface. ### Claim 2 (depends on 1) The sensing magnet assembly of claim 1, wherein: the hole is formed to pass through the main body in an axial direction; and one side of the hole is disposed at the seating surface. ### Claim 3 (depends on 1) The sensing magnet assembly of claim 1, wherein the groove is formed concavely in a downward direction in the seating surface and formed in a radial direction from a center of the main body. ### Claim 4 (depends on 3) The sensing magnet assembly of claim 3, wherein one side of the groove extends to an outer circumferential surface of the main body. ### Claim 5 (depends on 1) The sensing magnet assembly of claim 1, wherein the plate includes a rib that extends upward from an outer circumferential surface of the main body. ### Claim 6 (depends on 5) The sensing magnet assembly of claim 5, wherein the rib includes a plurality of protrusions disposed to be spaced apart from each other in a circumferential direction. ### Claim 7 (depends on 4) The sensing magnet assembly of claim 4, wherein the plate includes a rib that extends upward from the outer circumferential surface of the main body, wherein the rib includes a plurality of protrusions disposed to be spaced apart from each other in a circumferential direction, and one side of the groove that extends to the outer circumferential surface of the main body is disposed between the protrusions. ### Claim 8 (depends on 1) The sensing magnet assembly of claim 1, wherein an air layer is formed between the groove or the hole and the adhesive tape. ### Claim 9 (depends on 1) The sensing magnet assembly of claim 1, wherein the groove or the hole is a groove or a hole for removing an air layer disposed between the adhesive tape and the seating surface. ### Claim 10 A sensing magnet assembly comprising: a plate; a magnet disposed on the plate; and an adhesive tape disposed between the plate and the magnet so as to fix the magnet to the plate, wherein the plate includes a first region including a protrusion and a second region which extends from the first region and in which the adhesive tape is disposed, wherein the second region of the plate includes two or more holes or grooves, and the holes or the grooves are rotationally symmetrical based on a center (C) of the plate. ### Claim 11 A motor comprising: a shaft; a rotor disposed outside the shaft; a stator disposed outside the rotor; a sensing magnet assembly disposed on the stator; and a sensor unit disposed on the sensing magnet assembly, wherein the sensing magnet assembly includes a plate, a magnet disposed on the plate, and an adhesive tape disposed between the plate and the magnet so as to fix the magnet to the plate, wherein the plate includes a main body on which the adhesive tape is disposed, wherein the main body includes a seating surface and a plurality of grooves or holes, and one surface of the adhesive tape is disposed on the seating surface. ### Claim 12 A rotor position sensing apparatus comprising: a sensing plate; a sensing magnet disposed on an upper surface of the sensing plate; and a substrate disposed on the sensing magnet, wherein the rotor position sensing apparatus further comprises a can member coupled to the sensing magnet so as to surround the sensing magnet and coupled to the sensing plate. ### Claim 13 (depends on 12) The rotor position sensing apparatus of claim 12, wherein the can member includes: a first surface in contact with an inner circumferential surface of the sensing magnet; a second surface in contact with an upper surface of the sensing magnet; a third surface in contact with an outer circumferential surface of the sensing magnet and an outer circumferential surface of the sensing plate; and a fourth surface in contact with a lower surface of the sensing plate. ### Claim 14 (depends on 13) The rotor position sensing apparatus of claim 13, wherein the sensing plate: includes a coupling groove concavely formed in the lower surface of the sensing plate; and is disposed in the coupling groove in which a protrusion of the fourth surface is positioned. ### Claim 15 (depends on 13) The rotor position sensing apparatus of claim 13, wherein the sensing plate includes a shaft coupling portion having a cylindrical shape in which a hole is disposed. ### Claim 16 (depends on 15) The rotor position sensing apparatus of claim 15, wherein a height of the third surface based on the second surface is: greater than the sum of a thickness of the sensing magnet and a thickness of a seating portion of the sensing plate; and less than a height from the lower surface of the sensing plate to an upper end of the shaft coupling portion. ### Claim 17 (depends on 2) The sensing magnet assembly of claim 2, wherein the plate includes a rib which extends upward from an outer circumferential surface of the main body. ### Claim 18 (depends on 3) The sensing magnet assembly of claim 3, wherein the plate includes a rib which extends upward from an outer circumferential surface of the main body. ### Claim 19 (depends on 17) The sensing magnet assembly of claim 17, wherein the rib includes a plurality of protrusions disposed to be spaced apart from each other in a circumferential direction. ### Claim 20 (depends on 18) The sensing magnet assembly of claim 18, wherein the rib includes a plurality of protrusions disposed to be spaced apart from each other in a circumferential direction.