Abstract: The invention relates to folding mechanism, scooter using the same, folding and locking methods thereof. The folding mechanism is used for controlling the column of the scooter to fold relative to the footboard of the scooter. The folding mechanism comprising: base, rotating shaft, folding assembly, and triggering assembly for triggering the movement of the folding assembly. The base and folding assembly form a hinge-joint by the rotating shaft, the triggering assembly is disposed in the column, particularly slidably disposed at the side of the folding assembly. Controlling the triggering assembly to slide towards the folding assembly and press against it, can make the folding assembly fold relative to the base, the operation is time-saving and effective, furthermore, the scooter doesn't have exposed part, the structure is compact, which is safe and reliable, meanwhile, it also improves the appearance thereof.

Abstract: A brake booster for a vehicle brake system includes a brake force transmitting element, a booster force transmitting element, a first rotation sensor, and a second rotation sensor. The brake force transmitting element is moveable in an axial direction for transmitting a pedal brake force from a brake pedal to a primary brake cylinder. The booster force transmitting element is moveable in the axial direction for transmitting a booster brake force to the primary brake cylinder. The first rotation sensor is kinematically coupled with the brake force transmitting element via a motion converting mechanism for measuring the axial position of the brake force transmitting element. The second rotation sensor is kinematically coupled with the booster force transmitting element for measuring the axial position of the booster force transmitting element. The measurements of the first and second rotation sensors are used for controlling the generation of the booster brake force.

Abstract: A booster includes a valve body and a boosting assembly with a ball screw. The ball screw includes a screw rod, a nut, and a plurality of balls cooperating with and between the screw rod and the nut. The nut is linked with the valve body and moves along a straight line on its cooperated screw rod so as to drive the valve body to move along a straight line. A brake system includes the booster and a hydraulic system that includes a braking main cylinder with a piston. The valve body is connected to the piston. The booster is configured to provide high transmission efficiency.

Abstract: The present invention discloses a booster (100) and a brake system. The booster includes a valve body (2) and a boosting assembly including a ball screw. The ball screw includes a screw rod (40), a nut (41) and a plurality of balls cooperating with and between the screw rod (40) and the nut (41). The nut (41) is linked with the valve body (2) and the nut (41) moves along a straight line on its cooperated screw rod (40) so as to drive the valve body (2) to move along a straight line. The brake system includes the booster (100) and a hydraulic system. The hydraulic system includes a braking main cylinder (11) having a piston (12), and the valve body (2) is connected to the piston (12). The booster can provide high transmission efficiency.

Abstract: A brake booster for a vehicle brake system includes a brake force transmitting element configured to be moveable in an axial direction for transmitting a pedal brake force from a brake pedal to a primary brake cylinder of the vehicle, a booster force transmitting element configured to be moveable in the axial direction for transmitting a booster brake force to the primary brake cylinder, a first rotation sensor kinematically coupled with the brake force transmitting element via a motion converting mechanism, which is configured for converting a translational motion into a rotational motion, for measuring the axial position of the brake force transmitting element, and a second rotation sensor kinematically coupled with the booster force transmitting element for measuring the axial position of the booster force transmitting element; wherein the measurements of the first and second rotation sensors are used for controlling the generation of the booster brake force.

Abstract: An electric brake booster for a vehicle brake system includes a push bar configured to be driven by a brake pedal to move forwards in an axial direction; a brake force outputting element configured to be pushed forwards by the push bar to output a brake force from the brake pedal; a booster force outputting element for outputting a booster force; a motor for driving the booster force outputting element to create the booster force; a poppet configured to be pushed forwards in the axial direction by the push bar with a spring force, wherein the poppet forms a boost switch, through which an electrical current can pass, with the brake force outputting element and forms a release switch, through which another electrical current can pass, with the booster force outputting element; and an electronic control unit for controlling the operation of the motor in responsive to the on-off states of the boost switch and the release switch.

Abstract: An electric brake booster for a vehicle brake system includes a push bar configured to be driven by a brake pedal to move forwards in an axial direction; a brake force outputting element configured to be pushed forwards by the push bar to output a brake force from the brake pedal; a booster force outputting element for outputting a booster force; a motor for driving the booster force outputting element to create the booster force; a poppet configured to be pushed forwards in the axial direction by the push bar with a spring force, wherein the poppet forms a boost switch, through which an electrical current can pass, with the brake force outputting element and forms a release switch, through which another electrical current can pass, with the booster force outputting element; and an electronic control unit for controlling the operation of the motor in responsive to the on-off states of the boost switch and the release switch.

Abstract: A motor controller for regulating the speed and limiting the input current to a dc motor is disclosed. The motor controller includes an electronic control unit, a current sensor and a speed sensor. The motor controller provides control of the dc motor by applying a varying voltage to maintain a motor speed in the presence of a varying load. The motor controller also monitors the input current to the dc motor to predict an input current to the dc motor. The ECU compares the predicted input current to a input current limit range and switches to a current-limiting mode when it determines that an overcurrent condition is reached based on the comparison. The motor controller modifies the control signal by a first control decay factor when the predicted input current exceeds the input current limit range. The motor controller modifies the control signal by a second control decay factor when the predicted input current is within the input current limit range level.

Abstract: A motor controller for regulating the speed and limiting the input current to a dc motor is disclosed. The motor controller includes an electronic control unit, a current sensor and a speed sensor. The motor controller provides control of the dc motor by applying a varying voltage to maintain a motor speed in the presence of a varying load. The motor controller also monitors the input current to the dc motor to predict an input current to the de motor. The ECU compares the predicted input current to a input current limit range and switches to a current-limiting mode when it determines that an overcurrent condition is reached based on the comparison. The motor controller modifies the control signal by a first control decay factor when the predicted input current exceeds the input current limit range. The motor controller modifies the control signal by a second control decay factor when the predicted input current is within the input current limit range level.