摘要:
A shock absorber has a function of transmitting electric power between sprung and unsprung electrical components. The shock absorber includes a pair of conductive elements. The conductive elements are coupled electrically to each other. One of the conductive elements is attached to the rod of the shock absorber. The other conductive element is mounted within the tube.
摘要:
A shock absorber has a function of transmitting electric power between sprung and unsprung electrical components. The shock absorber includes a pair of conductive elements. The conductive elements are coupled electrically to each other. One of the conductive elements is attached to the rod of the shock absorber. The other conductive element is mounted within the tube.
摘要:
An electromechanical brake system for a vehicle has a brake actuator installed to each wheel of the vehicle and a controller for controlling an operation of each brake actuator. The brake actuator is constituted to clamp a disc rotor by a pair of brake pads through a rotational motion converting mechanism according to an operation of the motor. The rotational motion converting mechanism is constituted by a screw shaft integrally connected to a rotation shaft of the motor and a ball screw screwed with the screw shaft and integrally connected to one of the pair of brake pads. When the vehicle is put in a stopping state, the controller drives the motor so that an ordinary use region of the screw shaft, which is contacted with balls of the ball nut during a brake operation, is faced with a lubricant hole formed at an end portion of the ball nut.
摘要:
A pressure control actuator suitable for an automotive brake control system comprises a pressure-regulation cylinder slidably enclosing a piston and cooperative with the piston for defining therein a variable-volume pressure chamber which is fluidly connected to a wheel cylinder, a shut-off valve through which the variable-volume chamber is connected to a master cylinder, a motor-driven thrust generator drivingly connected to the piston for producing a thrust, and a heavily pre-loaded return spring for biasing the piston in a first direction opposite to a second direction in which the piston is pushed by the master-cylinder pressure shut-up in the chamber, when the piston is displaced apart from its neutral position in the second direction so that the volume of the chamber is enlarged. A pre-load of the spring is set to balance with a force acting on the piston by a maximum master-cylinder pressure introduced into the chamber. In the absence of thrust acting on the piston after termination of the ABS pressure-reduction control, the piston quickly and precisely returns to the neutral position. Zero-thrust ensures a quick recovery of the piston to the neutral position at the aid of light braking action after termination of the TCS pressure-intensifying control.
摘要:
A hydraulic brake actuator for use in an automobile brake system which includes a master cylinder to be operated by a driver and a wheel cylinder connected to the master cylinder through a hydraulic circuit for applying a braking force to a wheel. The actuator is capable of performing anti-skid control function and/or traction control function, and includes a control cylinder device having a chamber which is connected to the wheel cylinder and adapted to be selectively connected to the master cylinder and disconnected therefrom. A piston is axially displaceably accommodated in the chamber for changing the volume of the chamber. A valve device has inlet and outlet ports connected to the master cylinder and the chamber, respectively, and is operatively connected to the piston so as to be opened or closed in response to the displacement of the piston.
摘要:
An active suspension system for an automotive vehicle is provided. This suspension system includes generally a hydraulic circuit which supplies pressurized fluid to hydraulic cylinders for controlling vehicle height and attitude. The hydraulic circuit includes a line pressure holding unit and a line pressure control unit. The line pressure holding unit is operable to hold the line pressure when the line pressure is lowered below a preselected pressure level after stopping supply of the pressurized fluid to the hydraulic cylinders. The line pressure control unit restricts a flow rate of the pressurized fluid to the hydraulic cylinders to build up the line pressure gradually until the line pressure reaches the preselected pressure level after starting the supply of pressurized fluid to the hydraulic cylinders to allow smooth adjustment of vehicle height and attitude.
摘要:
An active suspension system is provided a pressure accumulator connected to a drain line connecting a drain port of a pressure control valve which controls pressure in the working chamber of an active cylinder. The pressure accumulator serves for absorbing high pressure surge. On the other hand, means, disposed within the drain line, for generating pressure difference between the upstream and the lowerstream thereof so that the fluid pressure in the drain line at the orientation where the pressure accumulator is connected, is maintained at a level higher than an initial gas pressure in the pressure accumulator.
摘要:
An actively controlled suspension system includes a fluid circuit connecting a fluid pressure source and a working chamber of a working cylinder disposed between a vehicle body and a suspension member. The fluid circuit includes a pressure control valve which is connected to an electric control system to be controlled valve position by an electric control signal for controlling fluid pressure in the working chamber. The fluid circuit also includes a fail-safe valve which normally forms part of fluid path of the fluid circuit is responsive to a fail-safe signal generated in the control system to take place fail-safe operation for setting the fluid pressure in the working chamber at a predetermined pressure.
摘要:
A retractor is equipped with an emergency locking mechanism and an automatic locking mechanism. It is allowed to change the automatic locking mechanism from a state ready to actuate to a state not ready to actuate and vice versa by suitably changing the wound state of the webbing on a take-up spindle.
摘要:
A emergency locking retractor includes a reel equipped with cogs; lock means capable of assuming any one of a reel-locking position, an intermediate position where the lock means is in engagement with one of the cogs of the reel but still allows the reel to rotate slightly, and a reel non-locking position; first biasing means holding the lock means normally at the non-locking position; an inertia member; second biasing means for normally allowing the inertia member to rotate together with the reel; transmission means for transmitting rotation of the reel to the lock means when the inertia member moves relative to the reel, whereby the lock means is caused to return from the non-locking position to the intermediate position against the first biasing means; and means for permitting the release of connection between the inertia member and transmission means by the second biasing means when the lock means is forced to move to the locking position by a further slight rotation of the reel subsequent to a displacement of the lock means to the intermediate position by the transmission means.