A foldable brake pedal apparatus for an autonomous driving vehicle enables a pedal pad to protrude from a pedal housing in a popped-up state to make it possible for the driver to operate the pedal pad in a manual driving mode in which the driver manually drives the vehicle. In particular, the pedal pad is inserted into the pedal housing and blocked from being exposed to the driver in a hidden state so as to make it impossible for the driver to operate the pedal pad in an autonomous driving mode in which the driver does not manually drive the vehicle.

A foldable brake pedal apparatus for an autonomous driving vehicle enables a pedal pad to protrude from a pedal housing in a popped-up state to make it possible for the driver to operate the pedal pad in a manual driving mode in which the driver manually drives the vehicle. In particular, the pedal pad is inserted into the pedal housing and blocked from being exposed to the driver in a hidden state so as to make it impossible for the driver to operate the pedal pad in an autonomous driving mode in which the driver does not manually drive the vehicle.

Disclosed herein an electronic brake system includes a first block comprising a master cylinder having a first master piston connected to a brake pedal and a first master chamber whose volume is changed by a displacement of the first master piston; a second block comprising a pedal simulator, a hydraulic pressure supply device that generates a hydraulic pressure by operating a hydraulic piston according to an electrical signal, and a hydraulic control unit comprising a first hydraulic circuit that controls a hydraulic pressure transferred to two wheel cylinders and a second hydraulic circuit that controls a hydraulic pressure transferred to the other two wheel cylinders, the second block disposed to be spaced apart from the first block; a plurality of electronic control units (ECUs) that controls various devices and valves based on hydraulic pressure information and displacement information of the brake pedal; and a connection line having one end connected to the first block and the other end connected to the second block; wherein the connection line has one end connected to the first master chamber and the other end thereof connected to the pedal simulator side.

Disclosed herein an electronic brake system includes a first block comprising a master cylinder having a first master piston connected to a brake pedal and a first master chamber whose volume is changed by a displacement of the first master piston; a second block comprising a pedal simulator, a hydraulic pressure supply device that generates a hydraulic pressure by operating a hydraulic piston according to an electrical signal, and a hydraulic control unit comprising a first hydraulic circuit that controls a hydraulic pressure transferred to two wheel cylinders and a second hydraulic circuit that controls a hydraulic pressure transferred to the other two wheel cylinders, the second block disposed to be spaced apart from the first block; a plurality of electronic control units (ECUs) that controls various devices and valves based on hydraulic pressure information and displacement information of the brake pedal; and a connection line having one end connected to the first block and the other end connected to the second block; wherein the connection line has one end connected to the first master chamber and the other end thereof connected to the pedal simulator side.

A method of controlling switching to a manual driving mode in an autonomous vehicle provided with a foldable pedal device is provided. In the method, when a signal for switching a driving mode from an autonomous driving mode to the manual driving mode is generated in an autonomous vehicle provided with a foldable accelerator pedal device and a foldable brake pedal device, whether it is possible to switch the driving mode to the manual driving mode is determined by checking safety conditions; when the safety conditions are satisfied, it is determined whether a pop-up position of a pad of the foldable accelerator pedal device and a pop-up position of a pad of the foldable brake pedal device are normal pop-up positions, respectively; and only when the positions are the respective normal pop-up positions, the driving mode is switched to the manual driving mode.

A pedal simulator includes a pedal simulator piston configured to move in a linear direction based on a pedal stroke of a driver, a first stopper that is rotatable in a clockwise or counterclockwise direction and configured to adjust a pedal tactile feedback provided to the driver based on the rotation of the first stopper, a first damper disposed inside the pedal simulator piston to be spaced apart from the first stopper by an air gap, and configured to contract or expand based on the movement in the linear direction, and a second stopper configured to be operatively coupled with the first stopper for causing the air gap to change based on the rotation of the first stopper, wherein the pedal tactile feedback changes based on a change in the air gap.

A brake control system and method for autonomous vehicle control that includes a first brake pedal connected to a first brake arm, the first brake arm is connected to a first brake shaft, the first brake shaft extends a length between an upper end and lower end and includes a first actuator that expands and contracts in length. The lower end of the first brake shaft is operably connected to a first brake mechanism. An autonomous control system having a controller with microprocessor, memory and instructions is connected and controls operation of the first actuator. When the first brake shaft expands in length the first brake mechanism is engaged by the lower end of the first brake shaft thereby applying the brakes. The first brake mechanism is operable by depressing the first brake pedal in manual operation mode as well as by controlling the first actuator in autonomous operation mode.

A brake control system and method for autonomous vehicle control that includes a first brake pedal connected to a first brake arm, the first brake arm is connected to a first brake shaft, the first brake shaft extends a length between an upper end and lower end and includes a first actuator that expands and contracts in length. The lower end of the first brake shaft is operably connected to a first brake mechanism. An autonomous control system having a controller with microprocessor, memory and instructions is connected and controls operation of the first actuator. When the first brake shaft expands in length the first brake mechanism is engaged by the lower end of the first brake shaft thereby applying the brakes. The first brake mechanism is operable by depressing the first brake pedal in manual operation mode as well as by controlling the first actuator in autonomous operation mode.

A press brake includes a pedal case having an upper portion coupled to a sliding member, which is provided on a lower table and movable in a longitudinal direction, so as to be movable and tiltable in a vertical direction, the pedal case extending on its back surface side toward the lower table relative to the sliding member, the pedal case having a grounding portion capable of being grounded on a floor surface, a rolling body provided on each of side surfaces of the pedal case in the longitudinal direction and configured to roll on the floor surface along the longitudinal direction, and an urging member configured to urge the pedal case with respect to the sliding member so that the grounding portion is separated from the floor surface.

A press brake includes a pedal case having an upper portion coupled to a sliding member, which is provided on a lower table and movable in a longitudinal direction, so as to be movable and tiltable in a vertical direction, the pedal case extending on its back surface side toward the lower table relative to the sliding member, the pedal case having a grounding portion capable of being grounded on a floor surface, a rolling body provided on each of side surfaces of the pedal case in the longitudinal direction and configured to roll on the floor surface along the longitudinal direction, and an urging member configured to urge the pedal case with respect to the sliding member so that the grounding portion is separated from the floor surface.