Abstract: A shock absorber includes a hard-side damping element that gives resistance to a flow of liquid from an extension side chamber toward a compression side chamber, an electromagnetic valve capable of changing an opening area of an extension side bypass passage that bypasses the hard-side damping element and communicates the extension side chamber and the compression side chamber, and a soft-side damping element provided in the extension side bypass passage in series with the electromagnetic valve, in which the hard-side damping element includes an orifice and a leaf valve provided in parallel with the orifice, and in which the soft-side damping element includes an orifice having an opening area larger than an opening area of the orifice.

Abstract: A shock absorber includes a hard side damping element that imparts a resistance to a flow of liquid moving between an extension side chamber and a compression side chamber, a solenoid valve configured to change an aperture area of a bypass passage that bypasses the hard side damping element and communicates with the extension side chamber and the compression side chamber, a soft side damping element provided in series with the solenoid valve in the bypass passage, and a tank connected to the compression side chamber. The hard side damping element includes an orifice and leaf valves provided in parallel with the orifice. The soft side damping element includes an orifice having a larger aperture area than the orifice.

Abstract: A shock absorber includes a hard-side damping element for applying resistance to a flow of liquid from a compression side chamber to an extension side chamber, a solenoid valve capable of changing an opening area of a compression side bypass passage for communicating the compression side chamber and the extension side chamber by bypassing the hard-side damping element, and a soft-side damping element provided in the compression side bypass passage in series with the solenoid valve. The hard-side damping element has an orifice and a leaf valve provided in parallel with the orifice. The soft-side damping element has an orifice having an opening area larger than that of the orifice.

Abstract: A shock absorber is provided with a cylinder, a piston inserted into the cylinder and demarcating an interior of the cylinder into an extension side chamber and a compression side chamber, a piston rod joined to the piston, a damping passage, provided in the piston rod, that communicates with the extension side chamber and the compression side chamber, and a damping force adjustment valve provided in the damping passage. The damping force adjustment valve includes a damping force adjustment unit and a solenoid that drives the damping force adjustment unit to adjust a flow channel resistance. The piston rod includes a yoke into which the damping force adjustment valve is inserted, and a piston holding member mounted on the yoke. The yoke includes a through-hole opening from a side of the yoke and leading to the interior, and a groove provided on a perimeter of the yoke, extending from an anti-piston end, and leading to the through-hole.

Abstract: A shock absorber includes a hard side damping element that imparts a resistance to a flow of liquid moving between an extension side chamber and a compression side chamber, a solenoid valve configured to change an aperture area of a bypass passage that bypasses the hard side damping element and communicates with the extension side chamber and the compression side chamber, a soft side damping element provided in series with the solenoid valve in the bypass passage, and a tank connected to the compression side chamber. The hard side damping element includes an orifice and leaf valves provided in parallel with the orifice. The soft side damping element includes an orifice having a larger aperture area than the orifice.

Abstract: A shock absorber includes a hard-side damping element that gives resistance to a flow of liquid from an extension side chamber toward a compression side chamber, an electromagnetic valve capable of changing an opening area of an extension side bypass passage that bypasses the hard-side damping element and communicates the extension side chamber and the compression side chamber, and a soft-side damping element provided in the extension side bypass passage in series with the electromagnetic valve, in which the hard-side damping element includes an orifice and a leaf valve provided in parallel with the orifice, and in which the soft-side damping element includes an orifice having an opening area larger than an opening area of the orifice.

Abstract: A drive circuit anomaly diagnosing device of the present invention performs an anomaly diagnosis on a drive circuit including a power supply line on which a solenoid is disposed midway, a main switch disposed on the power source side relative to the solenoid, a first diode disposed on a protection line connecting a point between the main switch and the solenoid to ground with a forward direction corresponding to a direction from the ground side to the power source side, and a first capacitor interposed on a first line connecting a point between the protection line and the solenoid to the ground midway on the power supply line, the drive circuit being configured to supply power to the solenoid, on the basis of a current detected by a first current sensor disposed upstream of the main switch on the power supply line.

Abstract: There is provided a damper control device and a suspension apparatus that are capable of effectively preventing a posture change such as pitching or rolling of the body of a vehicle. To achieve the above object, a damper control device of the present invention is designed to control a damping force of a damper in accordance with a rate of change in acceleration or a rate of change in angular acceleration. If there is a time delay in the rising of the acceleration acting on the vehicle body with respect to the driving operation being performed by the driver of the vehicle, the rate of change in the acceleration has a phase lead relative to the acceleration, and accordingly, the rate of change has only a short time delay with respect to the driving operation.

Abstract: A front fork of the present invention has: a cylinder in which a damper of one fork leg is connected to an outer tube on a vehicle body side; a piston rod connected to an inner tube on an axle side; and a piston valve attached to the piston rod and movably inserted into the cylinder. A variable throttle for extension-side damping force adjustment is provided in the piston rod. A stroke sensor has a detected element attached to the cylinder, and a detection unit that is attached to the piston rod and detects a displacement of the detected element. A variable throttle for compression-side damping force adjustment is attached to an outer tube on the vehicle body side of another fork leg.

Abstract: A drive circuit anomaly diagnosing device of the present invention performs an anomaly diagnosis on a drive circuit including a power supply line on which a solenoid is disposed midway, a main switch disposed on the power source side relative to the solenoid, a first diode disposed on a protection line connecting a point between the main switch and the solenoid to ground with a forward direction corresponding to a direction from the ground side to the power source side, and a first capacitor interposed on a first line connecting a point between the protection line and the solenoid to the ground midway on the power supply line, the drive circuit being configured to supply power to the solenoid, on the basis of a current detected by a first current sensor disposed upstream of the main switch on the power supply line.

Abstract: A suspension device of the present invention includes a front wheel-side damper damping force of which is adjustable and which is placed between a vehicle body and a front wheel in a saddled vehicle, a rear wheel-side damper damping force of which is adjustable and which is placed between the vehicle body and a rear wheel, and a control device to control the damping force of the front wheel-side damper and the rear wheel-side damper. Responsiveness in a damping force adjustment of the front wheel-side damper is made higher than responsiveness in a damping force adjustment of the rear wheel-side damper.

Abstract: A damper control device and a suspension device of the present invention controls a damping force of the damper based on a bank angle. Since a degree of the bank angle is a measure of easiness of occurrence of highside, and the damping force of dampers is controlled based on the bank angle in the damper control device and the suspension device, the damping force of the dampers can be appropriately controlled in accordance with a situation in which the highside is easy to occur.

Abstract: Since a control device for dampers and a suspension device of the present invention control damping force of the dampers based on extension time, when jump of a vehicle is small, the damping force of the dampers does not become excessively large, or when the jump of the vehicle is large, the damping force of the dampers does not become excessively small, and a large shock is not applied to a rider of the vehicle.

Abstract: A front fork of the present invention has: a cylinder in which a damper of one fork leg is connected to an outer tube on a vehicle body side; a piston rod connected to an inner tube on an axle side; and a piston valve attached to the piston rod and movably inserted into the cylinder. A variable throttle for extension-side damping force adjustment is provided in the piston rod. A stroke sensor has a detected element attached to the cylinder, and a detection unit that is attached to the piston rod and detects a displacement of the detected element. A variable throttle for compression-side damping force adjustment is attached to an outer tube on the vehicle body side of another fork leg.

Abstract: There is provided a damper control device and a suspension apparatus that are capable of effectively preventing a posture change such as pitching or rolling of the body of a vehicle. To achieve the above object, a damper control device of the present invention is designed to control a damping force of a damper in accordance with a rate of change in acceleration or a rate of change in angular acceleration. If there is a time delay in the rising of the acceleration acting on the vehicle body with respect to the driving operation being performed by the driver of the vehicle, the rate of change in the acceleration has a phase lead relative to the acceleration, and accordingly, the rate of change has only a short time delay with respect to the driving operation.

Abstract: An object of the present invention is to provide an apparatus and a method for determining a bank angle that accurately determine a bank angle of the body of a vehicle. To achieve the above object, in the apparatus and the method for determining a bank angle according to the present invention, the larger bank angle is selected from a bank angle calculated based on accelerations of the body in the vertical and lateral directions and a bank angle calculated based on angular velocities of the body in the pitch and yaw directions to determine a bank angle of the body.

Abstract: A cylinder unit is provided in a rear side of a boat body to rotate an outboard motor main body as a steering apparatus, and a pump unit is provided to drive the pump unit via a hydraulic pipe by a steering wheel in a driver's seat. A steering torque inputted to the pump unit by the steering wheel is detected by a torque sensor. The pump unit is assisted in the steering operation direction based upon the detected torque by an electric motor, a worm gear, and a worm wheel.

Abstract: A cylinder unit is provided in a rear side of a boat body to rotate an outboard motor main body as a steering apparatus, and a pump unit is provided to drive the pump unit via a hydraulic pipe by a steering wheel in a driver's seat. A steering torque inputted to the pump unit by the steering wheel is detected by a torque sensor. The pump unit is assisted in the steering operation direction based upon the detected torque by an electric motor, a worm gear, and a worm wheel.

Abstract: To provide a power steering device for a boat with an outboard motor which helps to realize easy drive with small steering force without taking waterproofness into consideration. A gear device (4) is provided for driving a link mechanism for turning and steering an outboard motor main body at the rear of the boat body through a cable by a steering wheel (2). A steering torque input to the gear device (4) by the steering wheel (2) is detected by a torque sensor (35) to assist-drive the gear device 4 in the steering direction by an electric motor (27), a helical pinion (25), and a helical wheel (26).

Abstract: To provide a power steering device for a boat with an outboard motor which helps to realize easy drive with small steering force without taking waterproofness into consideration. A gear device (4) is provided for driving a link mechanism for turning and steering an outboard motor main body at the rear of the boat body through a cable by a steering wheel (2). A steering torque input to the gear device (4) by the steering wheel (2) is detected by a torque sensor (35) to assist-drive the gear device 4 in the steering direction by an electric motor (27), a helical pinion (25), and a helical wheel (26).