Abstract: A shock absorber is provided. The shock absorber of the present invention includes a shock absorber main body, a damping passage, a primary damping force generation component, and a secondary damping force generation component. The shock absorber main body has an outer tube and a rod and is stretchable. The damping passage communicates operating chambers with each other provided in the shock absorber main body. The primary and secondary damping force generation components are provided in series with the damping passage. The secondary damping force generation component includes a secondary valve, an annular facing portion, and a valve stopper. The annular facing portion faces the secondary valve with an annular gap between the annular facing portion and the secondary valve. The valve stopper has elasticity to allow bending, and when the secondary valve bends and comes in contact with the valve stopper, restricts the secondary valve from bending.

Abstract: A vehicle height adjustment device of the present invention includes a motion conversion unit that includes a rotating member and a linear motion member, and that converts a rotational motion of the rotating member into a linear motion of the linear motion member, a plurality of motors, a driven gear coupled to the rotating member, a plurality of drive gears that meshes with the driven gear, and a spring seat that is coupled to the linear motion member, and that supports one end of a suspension spring interposed between a vehicle body and an axle of a vehicle, wherein after driving the spring seat and then stopping the spring seat, some drive gears of the drive gears are driven in a direction opposite a drive direction of the spring seat.

Abstract: To achieve the foregoing object, a tubular linear motor of the present invention includes a core that has a tubular yoke and a plurality of teeth which are annular and provided at intervals in an axial direction on an outer periphery of the yoke; a winding mounted in a slot between the teeth; and a field magnet that is tubular, into which the core is movably inserted in the axial direction, and having N poles and S poles alternately arranged in the axial direction. An axial width Wi of a yoke-side inner peripheral edge of the teeth is larger than an axial width of an outer peripheral edge of the teeth.

Abstract: A shock absorber according to the present invention includes: a cylinder; a rod movably inserted into the cylinder; an extension side chamber (operation chamber) and a compression side chamber (operation chamber) provided in the cylinder; a valve disc that is provided to be movable in the axial direction on the outer circumference of the rod and has an annular valve seat and a port which is opened on the inner circumference of the annular valve seat and causes the extension side chamber (operation chamber) and the compression side chamber (operation chamber) to communicate with each other; and an annular leaf valve that opens and closes the port.

Abstract: A working fluid supply device is provided with: a first oil pump and a second oil pump driven by an engine; a third oil pump driven by an electric motor; a first unloading valve configured to shift the second oil pump to a no-load operation state; and a controller configured to control a supply state of working oil to an automatic transmission. The controller sets the supply state to a supply state selected from: a first supply state in which the working oil is supplied only from the first oil pump; a second supply state in which the working oil is supplied from the first oil pump and the third oil pump; a third supply state in which the working oil is supplied from the first oil pump and the second oil pump; and a fourth supply state in which the working oil is supplied from the first oil pump, the second oil pump, and the third oil pump.

Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring that biases the first movable iron core to the second fixed iron core side, a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core, and a communication passage that causes the first fixed iron core side of the second movable iron core to communicate with the second fixed iron core side.

Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on one axial end side and the other axial end side of a coil, a first movable member and a second movable member located between those fixed iron cores and configured to be attracted to the first fixed iron core and the second fixed iron core, respectively, by energization of the coil, a spring configured to bias the first movable member toward the second fixed iron core, and a first regulating portion made from a non-magnetic material, provided integrally with the first movable member or the second movable member, and configured to regulate movement of the first movable member toward the second fixed iron core with respect to the second movable member.

Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring housed in a spring chamber formed on the first fixed iron core side of the first movable iron core and biasing the first movable iron core to the second fixed iron core side, a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core, and a throttle passage that causes the spring chamber to communicate with outside.

Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring that biases the first movable iron core to the second fixed iron core side, and a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core. The movement of the first movable iron core in a direction orthogonal to the axial direction of the coil with respect to the first fixed iron core and the second fixed iron core is regulated.

Abstract: A suspension device includes a leaf spring and a buffer. The leaf spring applies an elastic force for relatively moving an unsprung member in a predetermined direction with respect to a body (sprung member) of a vehicle. The buffer includes a first expansion/contraction member, a second expansion/contraction member, an intermediate member, and a damping passage. The first and second expansion/contraction members form first and second gas chambers filled with gas therein and are expandable and contractible. An upper end and a lower end of the first and second expansion/contraction members are connected to the body. The intermediate member couples the first and second expansion/contraction members and is connected to the leaf spring. The damping passage allows the first and second gas chambers to communicate with each other, and applies resistance to flow of flowing gas. When one of the first and second expansion/contraction members expands, the other contracts.

Abstract: A worm shaft includes: an insertion portion; a wall surface; a tapered portion; and a main body portion, the gear portion is formed on the main body portion and the tapered portion such that a bottom land of the gear portion is positioned at radially outer side of a line extending in parallel with a rotation center axis of the worm shaft and passing through a boundary between the wall surface and the tapered portion.

Abstract: A fluid pressure control device includes a neutral passage, a control valve provided in the neutral passage, a first supply passage, and a discharge passage, the control valve has, a switching valve configured to control a flow of a working fluid to the discharge passage from the first actuator in accordance with a pressure in a pilot chamber to which a part of the working fluid supplied from the first supply passage to the first actuator is led, and a throttle portion configured to throttle the flow of the working fluid supplied to the first actuator from the first supply passage, and the pressure on an upstream side of the throttle portion is led to the pilot chamber.

Abstract: A steering device includes a rack shaft, a pair of tie rods, a rack housing portion, a pinion gear at one end of the rack housing portion, a first supporting portion to support the one end of the rack housing portion, and a second supporting portion to support the other end of the rack housing portion. The second supporting portion is movable in an axial direction of the rack housing portion from a proper position where the second supporting portion fixes the rack housing portion by being mounted on the vehicle body to an escaping position on the side of the pinion gear. The escaping position is a position where a distance from a tip of the tie rod on the other end of the rack housing portion to the second supporting portion is equal to or longer than twice the length of the tie rod.

Abstract: A swash-plate type piston pump includes a cylinder block configured to be rotated with rotation of a driving shaft, a plurality of pistons accommodated in a plurality of cylinders provided in the cylinder block, a swash plate configured to reciprocate the piston so that a volume chamber of the cylinder is expanded/contracted with the rotation of the cylinder block, an biasing mechanism configured to bias the swash plate in a direction where a tilting angle is made larger, a control pin configured to drive the swash plate in a direction where the tilting angle is made smaller in accordance with a rise in a load pressure of a pressure chamber, and a discharge channel configured to discharge the load pressure of the pressure chamber.

Abstract: A fluid property detecting device includes a detection portion configured to detect electric characteristics of a detection target fluid, a calculation portion configured to calculate a property value of the detection target fluid, and a storage portion configured to store the property value calculated by the calculation portion. The storage portion stores, in advance, as the reference detection value, the detection value of the electric characteristic of a reference fluid detected by the detection portion, and the calculation portion calculates the property value of the detection target fluid on the basis of a value obtained by subtracting the reference detection value from a detection value of the detection target fluid.

Abstract: A bracket of a cylinder device includes: a tubular portion having a C-shaped cross section, holding an outer periphery of the outer shell, and having a slit in a front portion; and a pair of mounting portions and protruding outward in the radial direction from both ends of the tubular portion in the circumferential direction. The tubular portion includes a hole formed to permit insertion of the protrusion, from at least one side portion to the back portion of the tubular portion.

Abstract: A spring guide attached to a shock absorber, the shock absorber being provided between a vehicle body and a wheel, the spring guide being configured to support a coil spring for elastically supporting the vehicle body, and the spring guide includes: a main body portion formed of a resin material; and an elastic part provided between the main body portion and an end portion of the coil spring, the elastic part is formed of a material having elastic modulus lower than the material forming the main body portion, the elastic part being integrally molded on the main body portion.

Abstract: To provide a lubricant composition for shock absorbers, a friction adjusting additive for a lubricant for shock absorbers, and a lubricant additive, each capable of satisfying both operational stability and ride comfort and improving the ride comfort further. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent and the friction adjusting agent contains a first zinc dithiophosphate represented by the following formula 1: [in the formula 1, R11 to R14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].

Abstract: Provided is a vehicle capable of suppressing an increase in weight. A vehicle includes an air suspension device (pneumatic apparatus), an accumulator, and an air pump. Compressed air is supplied to the air suspension device. The accumulator stores compressed air to be supplied to the air suspension device. The air pump is driven by a relative movement between a vehicle body and wheels, and generates compressed air to be stored in the accumulator.

Abstract: A vane pump is provided with: a pump housing having an accommodating concave portion; and a pump cartridge accommodated in the accommodating concave portion, wherein the pump cartridge has: a rotor; a plurality of vanes received in a plurality of slits formed in the rotor; a cam ring formed with a cam face on an inner circumference of the cam ring; and a first side plate provided at the opposite side from a bottom surface of the accommodating concave portion such that the cam ring is located therebetween, the first side plate has a first projected portion projected radially outward, and the pump cartridge is anchored to the pump housing via the first projected portion.