# US 11,897,549 B2 · Steer-by-wire type steering apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,897,549 B2 - Document ID: US11897549B2 - Status: Granted - Kind: B2 - Application number: 17/618,459 - Filed: 2020-06-10 - Published: 2022-11-03 - Granted: 2024-02-13 - Earliest claimed: 2019-06-20 - Assignees: Hl Mando Corporation - Applicants: Hl Mando Corporation - Inventors: In Hwan Jeon - Web page: https://patentgrep.com/patent/US11897549B2 ## CPC - B62D 5/001: {Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup} - B62D 5/0424: {the axes of motor and final driven element of steering gear, e.g. rack, being parallel} - B62D 5/0457: {characterised by control features of the drive means as such} - B62D 15/0225: {by measuring on a steering gear element, e.g. on a rack bar} - B62D 15/0235: {by measuring or deriving directly at the electric power steering motor} - F16H 7/02: with belts; with V-belts - F16H 25/2015: {Means specially adapted for stopping actuators in the end position; Position sensing means} - F16H 25/2204: {with balls} - B62D 5/0448: {Ball nuts} - B62D 15/0245: {Means or methods for determination of the central position of the steering system, e.g. straight ahead position} - F16H 7/023: {with belts having a toothed contact surface or regularly spaced bosses or hollows for slipless or nearly slipless meshing with complementary profiled contact surface of a pulley} - F16H 2025/2081: {Parallel arrangement of drive motor to screw axis} - F16H 2025/2096: {using endless flexible members} - 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) - F16H: GEARING ## Abstract The present embodiments may provide a steer-by-wire type steering apparatus which can significantly reduce production cost by reducing the number of components and simplifying the assembly procedure, by eliminating a pinion gear, etc., and sensing the position of a sliding bar on the basis of rotation information detected from a gear box which transfers the rotational force of a motor to the sliding bar. ## Claims ### Claim 1 A steer-by-wire steering apparatus comprising: a slide bar; a motor connected to the slide bar by a gear box to slide the slide bar; and a sensor detecting rotation information from the gear box and detecting a moveme position of the slide bar based on the rotation information. ### Claim 2 (depends on 1) The steer-by-wire steering apparatus of claim 1, wherein the gear box comprises a ball nut coupled to the slide bar, a nut pulley coupled to the ball nut, a motor pulley coupled to a motor shaft of the motor, and a belt connecting the nut pulley and the motor pulley, and the sensor detects the rotation information from at least one of the nut pulley, the ball nut, the motor pulley, and the belt. ### Claim 3 A steer-by-wire steering apparatus comprising: a slide bar; a motor connected to the slide bar by a gear box to slide the slide bar; and a sensor detecting rotation information from the gear box and detecting a movement position of the slide bar based on the rotation information, wherein: the gear box comprises a ball nut coupled to the slide bar, a nut pulley coupled to the ball nut, a motor pulley coupled to a motor shaft of the motor, and a belt connecting the nut pulley and the motor pulley, the sensor comprises a gear member rotating in engagement with one of the nut pulley, the ball nut, the motor pulley, and the belt, and the sensor detects the rotation information from the gear member. ### Claim 4 (depends on 3) The steer-by-wire steering apparatus of claim 3, wherein the gear member comprises a first gear member and a second gear member having different diameters, and the rotation information comprises first rotation information that is rotation information of the first gear member and second rotation information that is rotation information of the second gear member. ### Claim 5 (depends on 4) The steer-by-wire steering apparatus of claim 4, wherein the sensor determines the movement position of the slide bar based on a phase difference between the first rotation information and the second rotation information and the number of times the phase difference is 0. ### Claim 6 (depends on 4) The steer-by-wire steering apparatus of claim 4, wherein the nut pulley comprises a first extension axially extending from a portion of the nut pulley on which the belt is wound. ### Claim 7 (depends on 6) The steer-by-wire steering apparatus of claim 6, wherein the first extension comprises first gear teeth on an outer circumferential portion to engage with the first gear member and the second gear member. ### Claim 8 (depends on 6) The steer-by-wire steering apparatus of claim 6, wherein a third gear member engaging with the first gear member and the second gear member is coupled to the first extension. ### Claim 9 (depends on 4) The steer-by-wire steering apparatus of claim 4, wherein the ball nut comprises a second extension axially extending to protrude from the inside to the outside of the nut pulley. ### Claim 10 (depends on 9) The steer-by-wire steering apparatus of claim 9, wherein the second extension comprises second gear teeth on an outer circumferential portion to engage with the first gear member and the second gear member. ### Claim 11 (depends on 9) The steer-by-wire steering apparatus of claim 9, wherein a fourth gear member engaging with the first gear member and the second gear member is coupled to the second extension. ### Claim 12 (depends on 4) The steer-by-wire steering apparatus of claim 4, wherein the motor pulley comprises a third extension axially extending from a portion of the motor pulley on which the belt is wound. ### Claim 13 (depends on 12) The steer-by-wire steering apparatus of claim 12, wherein third gear teeth engaging with the first gear member and the second gear member is provided on an outer circumferential portion of the third extension. ### Claim 14 (depends on 12) The steer-by-wire steering apparatus of claim 12, wherein a fifth gear member engaging with the first gear member and the second gear member is coupled to the third extension. ### Claim 15 (depends on 4) The steer-by-wire steering apparatus of claim 4, wherein the first gear member and the second gear member rotate in engagement with the belt.