An adjustment control for adjusting a damping curve of a shock absorber includes an aperture seat coupled to a base of the shock absorber. The aperture seat defines a flow tube. A plug, in mechanical communication with a spring, slidably engages the flow tube. A plug nut is threadably coupled to an adjustment nut shaft stud and is in mechanical communication with the spring. An adjustment nut is coupled to the base. The adjustment nut has a non-circular cavity to receive at least a portion of the adjustment nut shaft stud and at least a portion of the non-circular region of the plug nut such that the plug nut cannot rotate relative to the non-circular cavity of the adjustment nut. An adjustment knob causes rotation of the adjustment nut shaft stud. The rotation of the adjustment nut shaft stud causes axial movement of the plug nut.

The actuator comprises a cylinder and a rod. The cylinder comprises an inner cylindrical tube and an outer cylindrical tube which extend coaxially to each other along a longitudinal axis (z). The inner cylindrical tube accommodates a plunger which is rigidly connected to the rod and separates an inner volume of the inner cylindrical tube into a compression chamber and an extension chamber, wherein at least the compression chamber contains oil. The inner cylindrical tube and the outer cylindrical tube enclose with each other a reservoir chamber which is permanently in fluid communication with the extension chamber via at least one first passage provided in the inner cylindrical tube and contains a pressurized gas in a first portion thereof and oil in a remaining portion thereof. The cylinder further comprises an intermediate cylindrical tube which extends along the longitudinal axis (z) between the inner cylindrical tube and the outer cylindrical tube and encloses, along with the inner cylindrical tube, an intermediate chamber permanently in fluid communication with the compression chamber via at least one second passage provided in the inner cylindrical tube. The actuator further comprises a check valve associated to the inner cylindrical tube to allow the oil to flow in the direction from the reservoir chamber to the compression chamber only, and an electrically-operated flow control valve which is associated to the intermediate cylindrical tube for controlling the flow of the oil between the intermediate chamber and the reservoir chamber. The flow control valve is movable between a first operating position, in which it allows the oil to flow between the intermediate chamber and the reservoir chamber, and a second operating position, in which it prevents the oil from flowing between the intermediate chamber and the reservoir chamber.

A damper with inner and outer tubes and a piston disposed within the inner tube to define first and second working chambers. A fluid transport chamber is positioned between the inner and outer tubes. A collector chamber is positioned outside the outer tube. An intake valve assembly, abutting one end of the inner tube, is positioned inside the outer tube. An accumulator insert with an open end abutting the intake valve assembly is positioned inside the outer tube. The accumulator insert includes an accumulator sleeve, a floating piston, and a pressurized chamber. The floating piston is disposed inside the accumulator sleeve and the pressurized chamber is positioned between the floating piston and a closed end of the accumulator sleeve. An accumulation chamber is positioned between the intake valve assembly and the floating piston and the accumulator sleeve includes one or more apertures arranged in fluid communication with the collector chamber.

Disclosed herein is a shock absorber device having a structure for constant-speed operation. The shock absorber device having a structure for constant-speed operation includes: a body configured such that an inner cylinder having a plurality of orifices is concentrically accommodated inside an outer cylinder and a piston rod and a spring are connected to a piston that slides in the inner cylinder; an accumulator disposed in a flow passage communicating with the orifices and configured to damp a working fluid; and an adjusting means configured to adjust absorbing force and repelling force to a set range via the piston rod. A connection rod is angle-adjustably provided at at least one end of the body, and the connection rod is connected via a worm gear and an adjusting bolt.

A damper with inner and outer tubes and a piston slidably disposed within the inner tube to define first and second working chambers. A fluid transport chamber is positioned between the inner and outer tubes. A collector chamber is positioned outside the outer tube. An intake valve assembly, abutting one end of the inner tube, includes first and second intake valve bodies and a divider body, which define first and second intermediate chambers in the intake valve assembly. An accumulation chamber is positioned between the intake valve assembly and a closed end of the outer tube. The first intermediate chamber and accumulation chamber are arranged in fluid communication with the collector chamber. A first intake valve controls fluid flow between the second working chamber and the collector chamber. A second intake valve controls fluid flow between the second intermediate chamber and the collector chamber.

A hydraulic actuator includes a housing and with a chamber, which is arranged or formed in the housing and in which a piston is mounted movably and divides the chamber into a flexion chamber and an extension chamber. A channel for hydraulic fluid leads from the flexion chamber and the extension chamber into the housing in order to produce a fluidic connection between the flexion chamber and the extension chamber. At least one valve is arranged in the fluidic connection. The channels lead from the housing to a valve block in which the at least one valve is arranged and is fluidically coupled to the channels, and the valve block is connected to the housing.

A damper device includes an outer cylinder, an inner cylinder disposed inside the outer cylinder and having an inner chamber, a lower open end, and an upper closed end wall with a vent hole, a piston disposed in the inner chamber and having a passageway, a check valve coupled to the passageway to permit only upward flowing of a working fluid in the inner chamber through the passageway, and a piston rod having a lower rod end disposed outwardly of the outer cylinder, and an upper rod mounted to permit the piston to slide with the piston rod. The sliding of the piston rod is dampened by sliding of the piston in the inner chamber. A hinge assembly including the damper device is also disclosed.

An electronic valve assembly for a vehicle suspension damper is described in which a first electronic valve is disposed along a fluid flow path extending between a compression region of a damping cylinder and a fluid reservoir chamber. The first electronic valve controls flow of fluid from the compression region into the fluid reservoir chamber. A second electronic valve is disposed along a fluid flow path extending between a rebound region of the damping cylinder and the compression region. The second electronic valve controls flow of fluid from the rebound region into the compression. The first electronic valve does not reside in the fluid flow path extending from the rebound region into the compression region, and the second electronic valve does not reside in the fluid flow path extending from the compression region into the fluid reservoir chamber.

The actuator comprises a cylinder and a rod. The cylinder comprises an inner cylindrical tube and an outer cylindrical tube which extend coaxially to each other along a longitudinal axis (z). The inner cylindrical tube accommodates a plunger which is rigidly connected to the rod and separates an inner volume of the inner cylindrical tube into a compression chamber and an extension chamber, wherein at least the compression chamber contains oil. The inner cylindrical tube and the outer cylindrical tube enclose with each other a reservoir chamber which is permanently in fluid communication with the extension chamber via at least one first passage provided in the inner cylindrical tube and contains a pressurized gas in a first portion thereof and oil in a remaining portion thereof. The cylinder further comprises an intermediate cylindrical tube which extends along the longitudinal axis (z) between the inner cylindrical tube and the outer cylindrical tube and encloses, along with the inner cylindrical tube, an intermediate chamber permanently in fluid communication with the compression chamber via at least one second passage provided in the inner cylindrical tube. The actuator further comprises a check valve associated to the inner cylindrical tube to allow the oil to flow in the direction from the reservoir chamber to the compression chamber only, and an electrically-operated flow control valve which is associated to the intermediate cylindrical tube for controlling the flow of the oil between the intermediate chamber and the reservoir chamber. The flow control valve is movable between a first operating position, in which it allows the oil to flow between the intermediate chamber and the reservoir chamber, and a second operating position, in which it prevents the oil from flowing between the intermediate chamber and the reservoir chamber.

A vibration damper for a motor vehicle having at least one damper tube, which includes at least one damper fluid, a piston rod having a piston, which is guided axially in the damper tube, and at least one valve unit. The valve unit includes at least three flow paths for the damper fluid. The first flow path includes a first valve for a first damper setting. The second flow path includes a second valve for a second damper setting and a variable throttle. The third flow path includes a check valve, wherein the second damper setting is softer than the first damper setting and the cross section of the second flow path is adjustable at least partially by the variable throttle.