Patents by Inventor Joung Hee LEE

Joung Hee LEE 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).

  • Publication number: 20190308600
    Abstract: A brake system for a vehicle is provided to independently adjust a braking pressure of each wheel. The system includes a hydraulic pressure brake driven by two actuators and a sub-cylinder and valve configurations that are disposed in the peripheral flow path thereof to eliminate the pressure unbalance generated in the hydraulic pressure brake.
    Type: Application
    Filed: October 15, 2018
    Publication date: October 10, 2019
    Inventors: Joung Hee Lee, Jong Yun Jeong, Dong Yoon Hyun
  • Patent number: 10418429
    Abstract: An organic light emitting display device includes a substrate including a plurality of pixels defined thereon; a first electrode disposed at each pixel; a bank exposing the first electrode of each pixel; a spacer including, sequentially on the bank, a first layer of a first negative photoreactive acryl and a second layer of a second negative photoreactive acryl having a greater photoreactivity than a photoreactivity of the first negative photoreactive acryl, wherein the first layer has a negative taper and the second layer has a positive taper; an organic layer on the bank and the first electrode, the organic layer including an organic light emitting layer; and a second electrode on the bank, the spacer, and the organic layer.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: September 17, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Mi-Seong Kim, Joung-Woo Lee, Se-Jun Cho, Seung-Hee Kuk
  • Patent number: 10336304
    Abstract: A brake system for a vehicle, may include a brake input device to apply a brake input of a driver; a brake actuator generating braking hydraulic pressure; wheel cylinders generating braking force for each vehicle wheel by the braking hydraulic pressure generated by the brake actuator; and a hydraulic pressure supply line connecting the brake actuator and the wheel cylinders, wherein the brake actuator includes a main pump device by which braking force is applied, and a sub control device configured for adjusting the braking force applied by the main pump device.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: July 2, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Joung Hee Lee, Jong Yun Jeong, Dong Yoon Hyun
  • Patent number: 10337575
    Abstract: An electromechanical brake may include a drive device for the electromechanical brake to which a non-circulation type ball screw is applied, and may automatically compensate for a position movement amount of a ball caused by pad abrasion, wherein the electromechanical brake includes a drive device, that is, an electromechanical brake with a non-circulation type ball screw, in which pad abrasion is compensated by the ball screw, a torsion spring, and a ball retainer mounted at the other side of the torsion spring.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: July 2, 2019
    Assignee: Hyundai Motor Company
    Inventors: Joung Hee Lee, Jong Yun Jeong, Dong Yoon Hyun
  • Patent number: 10253834
    Abstract: An electromechanical brake is configured to detect a change in motor characteristics through a parking mechanism added to an existing electromechanical brake. Particularly, the electromechanical brake controls braking force by predicting a change in motor characteristics even in the event of a breakdown of a force sensor or even in a case in which no force sensor is utilized.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: April 9, 2019
    Assignee: Hyundai Motor Company
    Inventors: Joung Hee Lee, Jong Yun Jeong, Dong Yoon Hyun
  • Patent number: 10233987
    Abstract: An electromechanical brake (EMB) may include a nut member coupled to the piston and transferring an axial moving force to the piston; a screw coupled to the nut member and rotated to move the nut member in an axial direction; balls inserted between the nut member and the screw and transferring a rotational force of the screw to the nut member; a compression coil spring having one side mounted on the nut member; and a ball retainer mounted at the other side of the compression coil spring, wherein the ball retainer is disposed to be adjacent to a ball at a rearmost end portion among the balls inserted between the nut member and the screw, and pressurizes the compression coil spring while coming in contact with the balls during braking pressurization.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: March 19, 2019
    Assignee: Hyundai Motor Company
    Inventors: Joung Hee Lee, Jong Yun Jeong, Dong Yoon Hyun
  • Patent number: 10232835
    Abstract: A brake system for a vehicle may include a brake input device configured to apply a brake input of a driver; a brake actuator including a first pump device and a second pump device for supplying a brake hydraulic pressure; a brake adjusting device, which includes a first chamber and a second chamber, and is operated so that the first chamber and the second chamber are connected to or blocked from each other; and wheel cylinders configured to generate brake power for each wheel by the brake hydraulic pressure generated in the brake actuator, wherein the brake adjusting device blocks the first chamber and the second chamber so that a brake hydraulic pressure supplied from the first pump device and a brake hydraulic pressure supplied from the second pump device are blocked from each other.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: March 19, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Joung Hee Lee, Jong Yun Jeong, Dong Yoon Hyun
  • Patent number: 10167914
    Abstract: An electromechanical brake is capable of quickly releasing braking force and improving braking performance of a vehicle even when a power source breaks down. The electromechanical brake includes a drive unit including: a nut member which is coupled to a piston and moves in an axial direction to allow the piston to move forward and backward; a spindle which is thread-coupled to the nut member and rotates to move the nut member in the axial direction; an electric motor which provides power for rotating the spindle; a friction member which rotates together with the spindle; and an elastic member which stores elastic energy by being deformed when the friction member rotates during the braking operation, and provides elastic restoring force as backward torque to the spindle through the friction member when the braking operation is released.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: January 1, 2019
    Assignee: Hyundai Motor Company
    Inventors: Dong Yoon Hyun, Jong Yun Jeong, Joung Hee Lee
  • Patent number: 10138964
    Abstract: An electromechanical brake device and a method of controlling the same provide the electromechanical brake device capable of estimating motor characteristics, and the method capable of controlling the electromechanical brake device by estimating motor characteristics. The electromechanical brake device includes a reaction force generating mechanism which is installed between a piston and one side of a caliper housing, generates reaction force applied against straight moving force of the piston, which moves backward in an axial direction, in a direction in which a braking operation is released, and applies reaction force to the piston; a sensor which detects a motor operating state; and a controller which estimates a motor torque constant that represents a correlation between motor electric current and motor rotational torque, based on motor operating state information detected by the sensor when an operation of the motor is controlled.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: November 27, 2018
    Assignee: Hyundai Motor Company
    Inventors: Joung Hee Lee, Jong Yun Jeong, Dong Yoon Hyun
  • Patent number: 10072719
    Abstract: A disk brake having a double self-cooling structure to suppress thermal deformation may include a brake disk having a double cooling structure, which is capable of securing cooling performance of the disk while reducing cost and weight of a vehicle compared with the prior art by configuring a self-cooling structure of the disk that can suppress thermal deformation due to excessive frictional heat during braking a vehicle.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: September 11, 2018
    Assignees: Hyundai Motor Company, DACCcarbn Co., Ltd.
    Inventors: Jae Hun Shim, Byung Jun Park, Joung Hee Lee, Gab Bae Jeon, Dong Won Im, Yeon Ho Choi, Kang Yoo, Nam Cheol Lee
  • Patent number: 10060488
    Abstract: An electromechanical brake includes a piston installed in a caliper housing so as to be movable forward and backward in an axial direction, and moves forward in the axial direction at the time of performing a braking operation so as to press a friction pad provided to clamp a disc; an actuator which provides rotational force for moving the piston; a spindle which is thread-coupled to the piston, and rotates by rotational force transmitted from the actuator to move the piston forward and backward in the axial direction; and a guide member which is provided to be integrally fixed to the caliper housing and coupled to the piston so as to restrict rotation of the piston and guide forward and backward axial movement of the piston, in which the guide member has a support portion which is coupled to the spindle and supports the spindle in the axial direction.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: August 28, 2018
    Assignees: Hyundai Motor Company, Hyundai Mobis Co., Ltd.
    Inventors: Joung Hee Lee, Dong Yoon Hyun, Jong Yun Jeong, Jong Sung Kim, Yong Sik Kwon
  • Publication number: 20180215362
    Abstract: A brake system for a vehicle may include a brake input device configured to apply a brake input of a driver; a brake actuator including a first pump device and a second pump device for supplying a brake hydraulic pressure; a brake adjusting device, which includes a first chamber and a second chamber, and is operated so that the first chamber and the second chamber are connected to or blocked from each other; and wheel cylinders configured to generate brake power for each wheel by the brake hydraulic pressure generated in the brake actuator, wherein the brake adjusting device blocks the first chamber and the second chamber so that a brake hydraulic pressure supplied from the first pump device and a brake hydraulic pressure supplied from the second pump device are blocked from each other.
    Type: Application
    Filed: August 22, 2017
    Publication date: August 2, 2018
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Joung Hee LEE, Jong Yun JEONG, Dong Yoon HYUN
  • Publication number: 20180186353
    Abstract: A brake system for a vehicle, may include a brake input device to apply a brake input of a driver; a brake actuator generating braking hydraulic pressure; wheel cylinders generating braking force for each vehicle wheel by the braking hydraulic pressure generated by the brake actuator; and a hydraulic pressure supply line connecting the brake actuator and the wheel cylinders, wherein the brake actuator includes a main pump device by which braking force is applied, and a sub control device configured for adjusting the braking force applied by the main pump device.
    Type: Application
    Filed: September 5, 2017
    Publication date: July 5, 2018
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Joung Hee LEE, Jong Yun JEONG, Dong Yoon HYUN
  • Publication number: 20180163803
    Abstract: An electromechanical brake (EMB) may include a nut member coupled to the piston and transferring an axial moving force to the piston; a screw coupled to the nut member and rotated to move the nut member in an axial direction; balls inserted between the nut member and the screw and transferring a rotational force of the screw to the nut member; a compression coil spring having one side mounted on the nut member; and a ball retainer mounted at the other side of the compression coil spring, wherein the ball retainer is disposed to be adjacent to a ball at a rearmost end portion among the balls inserted between the nut member and the screw, and pressurizes the compression coil spring while coming in contact with the balls during braking pressurization.
    Type: Application
    Filed: April 24, 2017
    Publication date: June 14, 2018
    Applicant: Hyundai Motor Company
    Inventors: Joung Hee LEE, Jong Yun JEONG, Dong Yoon HYUN
  • Publication number: 20180149221
    Abstract: An electromechanical brake may include a drive device for the electromechanical brake to which a non-circulation type ball screw is applied, and may automatically compensate for a position movement amount of a ball caused by pad abrasion, wherein the electromechanical brake includes a drive device, that is, an electromechanical brake with a non-circulation type ball screw, in which pad abrasion is compensated by the ball screw, a torsion spring, and a ball retainer mounted at the other side of the torsion spring.
    Type: Application
    Filed: April 20, 2017
    Publication date: May 31, 2018
    Applicant: Hyundai Motor Company
    Inventors: Joung Hee LEE, Jong Yun JEONG, Dong Yoon HYUN
  • Publication number: 20180051761
    Abstract: A disk brake having a double self-cooling structure to suppress thermal deformation may include a brake disk having a double cooling structure, which is capable of securing cooling performance of the disk while reducing cost and weight of a vehicle compared with the prior art by configuring a self-cooling structure of the disk that can suppress thermal deformation due to excessive frictional heat during braking a vehicle.
    Type: Application
    Filed: December 15, 2016
    Publication date: February 22, 2018
    Applicants: Hyundai Motor Company, DACCcarbn Co., Ltd.
    Inventors: Jae Hun SHIM, Byung Jun Park, Joung Hee Lee, Gab Bae Jeon, Dong Won Im, Yeon Ho Choi, Kang Yoo, Nam Cheol Lee
  • Patent number: 9874258
    Abstract: An electromechanical brake integrates a function of a parking brake by adding a simple structure to an existing electromechanical brake. In particular, the electromechanical brake includes a parking braking releasing structure configured to automatically release parking braking after a parking brake operates. In addition, the electromechanical brake is implemented to perform and release parking braking by using a drive unit which may operate in a single direction instead of using a drive unit which may operate in two directions.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: January 23, 2018
    Assignee: Hyundai Motor Company
    Inventors: Joung Hee Lee, Jong Yun Jeong, Dong Yoon Hyun
  • Publication number: 20170328430
    Abstract: An electromechanical brake integrates a function of a parking brake by adding a simple structure to an existing electromechanical brake. In particular, the electromechanical brake includes a parking braking releasing structure configured to automatically release parking braking after a parking brake operates. In addition, the electromechanical brake is implemented to perform and release parking braking by using a drive unit which may operate in a single direction instead of using a drive unit which may operate in two directions.
    Type: Application
    Filed: November 29, 2016
    Publication date: November 16, 2017
    Inventors: Joung Hee Lee, Jong Yun Jeong, Dong Yoon Hyun
  • Publication number: 20170321773
    Abstract: An electromechanical brake device and a method of controlling the same provide the electromechanical brake device capable of estimating motor characteristics, and the method capable of controlling the electromechanical brake device by estimating motor characteristics. The electromechanical brake device includes a reaction force generating mechanism which is installed between a piston and one side of a caliper housing, generates reaction force applied against straight moving force of the piston, which moves backward in an axial direction, in a direction in which a braking operation is released, and applies reaction force to the piston; a sensor which detects a motor operating state; and a controller which estimates a motor torque constant that represents a correlation between motor electric current and motor rotational torque, based on motor operating state information detected by the sensor when an operation of the motor is controlled.
    Type: Application
    Filed: September 27, 2016
    Publication date: November 9, 2017
    Inventors: Joung Hee Lee, Jong Yun Jeong, Dong Yoon Hyun
  • Publication number: 20170321771
    Abstract: An electromechanical brake includes a piston installed in a caliper housing so as to be movable forward and backward in an axial direction, and moves forward in the axial direction at the time of performing a braking operation so as to press a friction pad provided to clamp a disc; an actuator which provides rotational force for moving the piston; a spindle which is thread-coupled to the piston, and rotates by rotational force transmitted from the actuator to move the piston forward and backward in the axial direction; and a guide member which is provided to be integrally fixed to the caliper housing and coupled to the piston so as to restrict rotation of the piston and guide forward and backward axial movement of the piston, in which the guide member has a support portion which is coupled to the spindle and supports the spindle in the axial direction.
    Type: Application
    Filed: November 30, 2016
    Publication date: November 9, 2017
    Inventors: Joung Hee Lee, Dong Yoon Hyun, Jong Yun Jeong, Jong Sung Kim, Yong Sik Kwon