Patents by Inventor Sehyun CHANG

Sehyun CHANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12252199
    Abstract: An embodiment independent corner module includes a knuckle unit positioned on an inner side surface of a wheel, a steering unit disposed to face a strut coupled to the knuckle unit, the steering unit having a center shaft configured to be fixed to a vehicle body and configured to rotate about the center shaft, a guide rail configured to define a movement path through which the steering unit rotates and moves, and a rack steering unit positioned in the steering unit, fastened to the knuckle unit, and configured to apply rotating force to the knuckle unit in response to a movement in a longitudinal direction.
    Type: Grant
    Filed: October 12, 2022
    Date of Patent: March 18, 2025
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Sehyun Chang, Sang Woo Hwang, Min Jun Kim, Youngil Sohn
  • Publication number: 20250083742
    Abstract: An independent steering apparatus includes a wheel of a vehicle, a knuckle integrally fixed to the wheel, a steering driving part configured to generate steering driving force, a deceleration part connected to an output shaft of the steering driving part and configured to transmit the steering driving force, and a deceleration part housing having the deceleration part located therein. In particular, the steering driving part is integrally fixed to the deceleration part housing, and the deceleration part housing is integrally fixed to the knuckle. The steering driving force generated by the steering driving part is transmitted to the deceleration part housing through the deceleration part, thereby rotating the knuckle.
    Type: Application
    Filed: December 8, 2023
    Publication date: March 13, 2025
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Jun Ho Seong, Min Jun Kim, Woo Keun Park, Sehyun Chang, Youngil Sohn
  • Publication number: 20250078734
    Abstract: A pixel circuit includes a first transistor including a control electrode electrically connected to a first node, a first electrode electrically connected to a second node and a second electrode electrically connected to a third node, a second transistor configured to apply a first data voltage to the first transistor, a third transistor electrically connected to the first node and the third node, a fourth transistor including a control electrode electrically connected to a fourth node, a first electrode electrically connected to a fifth node and a second electrode electrically connected to a sixth node, a fifth transistor configured to apply a second data voltage to the fourth transistor, a sixth transistor electrically connected to the fourth node and the sixth node and a light emitting element that emits light based on the first data voltage and the second data voltage.
    Type: Application
    Filed: June 14, 2024
    Publication date: March 6, 2025
    Applicant: Samsung Display Co., LTD.
    Inventors: KWIHYUN KIM, YEONKYUNG KIM, SEHYUN LEE, HAKSUN CHANG
  • Publication number: 20250054666
    Abstract: An embodiment magnetorheological (MR) damper includes a stator including a solenoid coil to which a current is applicable, a rotor configured to rotate with respect to the stator, and an orifice disposed between the stator and the rotor, wherein the orifice is configured to allow fluids sealed in a first chamber and a second chamber defined by the stator and the rotor to communicate with each other.
    Type: Application
    Filed: December 5, 2023
    Publication date: February 13, 2025
    Inventors: Youngil Sohn, Min Jun Kim, Jun Ho Seong, Sehyun Chang, Woo Keun Park, Seung Bok Choi, Byung-Hyuk Kang, Bo Gyu Kim
  • Patent number: 12220959
    Abstract: A roll control system for a corner module of a vehicle includes a knuckle that is coupled to a strut, positioned inside a wheel, and movable in upward and downward directions, a stopper that selectively moves in a downward direction and limits a range that the knuckle moves in the upward and downward directions, a power transmission unit that transmits power for moving the stopper in the downward direction, a clutch connected to the power transmission unit for transmitting a rotational force to the power transmission as a control motor is driven, and a controller electrically connected to the control motor for transmitting a power transmission signal to the control motor to control the stopper to selectively move in the upward and downward directions.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: February 11, 2025
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Sehyun Chang, Sang Woo Hwang, Min Jun Kim, Youngil Sohn
  • Patent number: 12220958
    Abstract: A suspension includes a knuckle to which a wheel of a vehicle is fastened, a steering drive portion connected to the knuckle, a lower arm positioned at a lower end portion of the steering drive portion and including a first end portion connected to the knuckle and a second end portion connected to a vehicle body frame, a connecting link including a first end portion connected to an upper end portion of the steering drive portion, an upper arm connected to a second end portion of the connecting link, a damper connecting the upper arm and the vehicle body frame, and a push rod including a first end portion connected to the upper arm and a second end portion connected to the lower arm.
    Type: Grant
    Filed: April 5, 2023
    Date of Patent: February 11, 2025
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Sehyun Chang, Youngil Sohn, Jun Ho Seong, Min Jun Kim, Sang Woo Hwang
  • Publication number: 20240301951
    Abstract: A spring reaction force variable apparatus includes, a motor configured to provide rotation force, a clutch unit coupled to an output shaft of the motor, a reducer disposed at an output end portion of the clutch unit, and a spring portion coupled to the reducer. Here, when the motor is driven, rotation force is applied to the reducer coupled to the output end portion, whereby torques are balanced on the reducer, and when the motor is off, the reaction torque of the spring portion and the torque applied to the reducer are balanced.
    Type: Application
    Filed: October 17, 2023
    Publication date: September 12, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Sehyun CHANG, Youngil SOHN, Jun Ho SEONG, Woo Keun PARK, Min Jun KIM, Sang Woo HWANG
  • Publication number: 20240300274
    Abstract: A vehicle height control system includes an arm including a first end portion connected to a vehicle body and a second end portion coupled to a wheel, a bearing unit fixed to the vehicle body, a crank coupled to the bearing unit, a push rod including a first end portion connected to the crank and a second end portion connected to the arm, and a spring reaction force variable device coupled to the bearing unit and configured to vary reaction force applied to the crank.
    Type: Application
    Filed: December 1, 2023
    Publication date: September 12, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Sehyun CHANG, Youngil SOHN, Jun Ho SEONG, Woo Keun PARK, Min Jun KIM, Sang Woo HWANG
  • Publication number: 20240227436
    Abstract: A driving module includes a housing rotatably supported about a knuckle unit, a barrel unit rotatably supported by the housing, a first rotation input unit and a second rotation input unit rotatably supported by the knuckle unit, a first gear unit engaged with the first rotation input unit to transmit a rotation force input from the first rotation input unit to the housing or the barrel unit, a second gear unit engaged with the second rotation input unit and the first gear unit to transmit a rotation force input from the second rotation input unit to the housing or the barrel unit, and a controller configured to control rotations of the first rotation input unit and the second rotation input unit independently of each other to selectively rotate the housing or the barrel unit so that a vehicle is movable in all directions.
    Type: Application
    Filed: November 9, 2023
    Publication date: July 11, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Sang Woo HWANG, Min Jun KIM, Jun Ho SEONG, Woo Keun PARK, Sehyun CHANG, Youngil SOHN
  • Publication number: 20240220024
    Abstract: A control method of a user interface may include: detecting an occupant from an image input from a camera; estimating a skeleton of the occupant; estimating a relative position of a finger of the occupant based on the estimated skeleton; determining a projection position based on the relative position of the finger, and projecting a projection image on the projection position by an image projector and playing the projection image.
    Type: Application
    Filed: August 28, 2023
    Publication date: July 4, 2024
    Applicants: Hyundai Motor Company, KIA CORPORATION
    Inventors: Danghee PARK, Sukmin CHOI, Sunwook KIM, Juhee PARK, Jangryul RIM, Sehyun CHANG, Hongmin KIM
  • Publication number: 20240124074
    Abstract: A fastening device for mobility and a mobility including the same includes a first fastening unit provided in a first module of the mobility, and a second fastening unit disposed in a second module of the mobility, the second fastening unit coupled or decoupled to the first fastening unit for attachment or detachment between the first module and the second module, wherein the first fastening unit and the second fastening unit include a first fastening member and a second fastening member selectively screw-coupled together, respectively, the second fastening unit further includes a support member configured to support rotatably the second fastening member.
    Type: Application
    Filed: July 5, 2023
    Publication date: April 18, 2024
    Applicants: Hyundai Motor Company, KIA CORPORATION
    Inventors: Danghee PARK, Sukmin CHOI, Sunwook KIM, Hongmin KIM, Sangwoo HWANG, Sehyun CHANG, Injae HWANG
  • Patent number: 11945276
    Abstract: The present disclosure discloses a preview vehicle height control system and a method of controlling the same. The system includes a monitoring device configured to detect the road surface condition of a driving path of a vehicle, an active suspension configured to adjust a vehicle height, a memory configured to store a plurality of data maps distinguished based on a type of bump, each data map having a vehicle dynamic characteristic as an input and a tuning factor as an output, and a controller configured to derive the tuning factor based on a data map, among the plurality of data maps of the memory, corresponding to the bump detected by the monitoring device, derive a target vehicle height in a form of a Gaussian distribution by substituting the tuning factor, and control the active suspension to follow the derived target vehicle height.
    Type: Grant
    Filed: August 19, 2022
    Date of Patent: April 2, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, FOUNDATION FOR RESEARCH AND BUSINESS SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Youngil Sohn, Min Jun Kim, Sang Woo Hwang, Sehyun Chang, Jun Ho Seong, Yong Hwan Jeong, Seong Jin Yim
  • Publication number: 20240100898
    Abstract: A suspension includes a knuckle to which a wheel of a vehicle is fastened, a steering drive portion connected to the knuckle, a lower arm positioned at a lower end portion of the steering drive portion and including a first end portion connected to the knuckle and a second end portion connected to a vehicle body frame, a connecting link including a first end portion connected to an upper end portion of the steering drive portion, an upper arm connected to a second end portion of the connecting link, a damper connecting the upper arm and the vehicle body frame, and a push rod including a first end portion connected to the upper arm and a second end portion connected to the lower arm.
    Type: Application
    Filed: April 5, 2023
    Publication date: March 28, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Sehyun CHANG, Youngil SOHN, Jun Ho SEONG, Min Jun KIM, Sang Woo HWANG
  • Publication number: 20240092134
    Abstract: A vehicle-height control system of an independent corner module, includes a suspension link connected to a wheel and configured to be rotated according to upward-downward displace of the wheel, a gear unit connected to a vehicle body and a rotational center portion of the suspension link and configured to receive a rotation force from the suspension link, a control torsion bar, a first end portion thereof being connected to the gear unit and the second end portion thereof being connected to a torsion variation unit, the torsion variation unit applying a drive force to adjust a height of the control torsion bar and to maintain the adjusted height, and a controller connected to the torsion variation unit and adjusting the height of the control torsion bar.
    Type: Application
    Filed: March 28, 2023
    Publication date: March 21, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Sehyun CHANG, Sang Woo HWANG, Min Jun KIM, Youngil SOHN
  • Patent number: 11879508
    Abstract: A clutch for preventing backdrive, includes a housing: a cover portion positioned on one end portion of the housing; an external shaft, at least one portion of which is positioned inside the housing, the other end portion thereof passing through the housing; a rocker positioned between the housing and the cover portion and fastened to the external shaft; an input shaft, one end portion thereof being inserted into an opening portion in the locker, and the other end portion thereof passing through the cover portion; and a gear portion positioned on the housing or the cover portion so that a serrated portion positioned on the locker is selectively brought into contact with the gear portion, wherein rotation of the rocker is restricted so that the external shaft is rotated along a rotation direction of the input shaft.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: January 23, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Sang Woo Hwang, Youngil Sohn, Sehyun Chang, Min Jun Kim
  • Publication number: 20230391157
    Abstract: A leaf spring suspension includes a knuckle having a wheel to be coupled thereto, a fixed frame positioned on a vehicle body and coupled to the knuckle through a trailing arm, a leaf spring having a first end portion coupled to the knuckle and having a second end portion having a variable support point, and a support unit configured to vary the support point on the second end portion of the leaf spring, wherein the support unit includes a spring support positioned to be brought into contact with the leaf spring, and a spring driver coupled to the spring support and configured to apply driving force to change the position of the spring support, and wherein the spring driver moves the position of the spring support to change the support point on the leaf spring.
    Type: Application
    Filed: December 1, 2022
    Publication date: December 7, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Sehyun CHANG, Youngil SOHN, Jun Ho SEONG, Min Jun KIM, Sang Woo HWANG
  • Patent number: 11820449
    Abstract: An embodiment independent corner module includes a knuckle unit positioned at an inward area of a wheel, an upper arm fastened between an upper end of the knuckle unit and a vehicle body, a lower arm fastened between a lower end of the knuckle unit and the vehicle body, a steering unit configured to input a steering angle to the knuckle unit by being rotated with respect to the lower arm, and a rack steering unit positioned under the steering unit and fastened to the knuckle unit, the rack steering unit being configured to apply a rotating force to the knuckle unit by varying a length thereof.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: November 21, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Sehyun Chang, Sang Woo Hwang, Min Jun Kim, Young Il Sohn
  • Publication number: 20230331057
    Abstract: The present disclosure discloses a preview vehicle height control system and a method of controlling the same. The system includes a monitoring device configured to detect the road surface condition of a driving path of a vehicle, an active suspension configured to adjust a vehicle height, a memory configured to store a plurality of data maps distinguished based on a type of bump, each data map having a vehicle dynamic characteristic as an input and a tuning factor as an output, and a controller configured to derive the tuning factor based on a data map, among the plurality of data maps of the memory, corresponding to the bump detected by the monitoring device, derive a target vehicle height in a form of a Gaussian distribution by substituting the tuning factor, and control the active suspension to follow the derived target vehicle height.
    Type: Application
    Filed: August 19, 2022
    Publication date: October 19, 2023
    Applicants: Hyundai Motor Company, Kia Corporation, Foundation for Research and Business, Seoul National University of Science and Technology
    Inventors: Youngil SOHN, Min Jun KIM, Sang Woo HWANG, Sehyun CHANG, Jun Ho SEONG, Yong Hwan JEONG, Seong Jin YIM
  • Publication number: 20230296143
    Abstract: A clutch for preventing backdrive, includes a housing: a cover portion positioned on one end portion of the housing; an external shaft, at least one portion of which is positioned inside the housing, the other end portion thereof passing through the housing; a rocker positioned between the housing and the cover portion and fastened to the external shaft; an input shaft, one end portion thereof being inserted into an opening portion in the locker, and the other end portion thereof passing through the cover portion; and a gear portion positioned on the housing or the cover portion so that a serrated portion positioned on the locker is selectively brought into contact with the gear portion, wherein rotation of the rocker is restricted so that the external shaft is rotated along a rotation direction of the input shaft.
    Type: Application
    Filed: November 29, 2022
    Publication date: September 21, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Sang Woo HWANG, Youngil SOHN, Sehyun CHANG, Min Jun KIM
  • Publication number: 20230296146
    Abstract: A clutch for preventing backdrive includes a housing, a cover portion located at one end portion of the housing, an external shaft, at least a portion of which is located in the housing, and another end portion of which passes through the housing, a plurality of lockers located inside the housing and surrounding the first end portion of the external shaft, an input shaft, a first end portion of which is inserted into openings of the plurality of lockers and a second end portion of which is configured to pass through the cover portion, and a brake unit configured to be selectively engaged to the lockers to restrict rotations of the lockers. The external shaft is restricted by the lockers so that the external shaft and the lockers are rotated in a rotation direction of the input shaft, and movements of the lockers are restricted by the brake unit when the external shaft is rotated.
    Type: Application
    Filed: December 1, 2022
    Publication date: September 21, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Sang Woo HWANG, Youngil SOHN, Sehyun CHANG, Min Jun KIM