The present disclosure relates to a shock absorber, in more detail, a damping force controlling shock absorber of which a damping force characteristic can be appropriately adjusted. A damping force controlling shock absorber according to the present disclosure includes: a cylinder formed in a double structure of an inside and an outside, having an internal space divided into a compression chamber and a rebound chamber by a piston valve, and having a reservoir chamber in an external space; a compression solenoid valve mounted on the cylinder; a rebound solenoid valve mounted on the cylinder; and a check valve disposed in the rebound solenoid valve, and opening and closing a channel connecting the reservoir chamber and the rebound chamber.

A suspension damper for washing machines includes a control rod that is configured to attach a fixed bracket of a washing machine cabinet and a first cap having an aperture through which the control rod slidingly extends. The first cap is configured to engage a concave portion of a bracket on a drum of the washing machine. A second cap is disposed on the control rod, and a spring is disposed between the first cap and the second cap. The first cap includes at least one water passageway for guiding water along an outer surface of the first cap. An umbrella may be disposed on the control rod to shed water outwardly away from the control rod.

A restriction for a vibration damper, comprising an annular element with variable diameter which is supported by a support and which occupies a restriction position depending on a flow velocity of a damping medium within the restriction proceeding from an open position through a radial closing movement in direction of a flow guiding surface. The annular element has at least two legs supported so as to be movable around a pivot bearing.

A dynamic damper for suppressing vibration generated by a gear attached to a rotation shaft, the dynamic damper, includes: a mass body that is disposed inside a rotation shaft having a hollow shape and extends along a shaft center of the rotation shaft; and an elastic body that couples the mass body to the rotation shaft. Further, a flow path for lubricating liquid to flow is provided between an inner peripheral surface of the rotation shaft and the mass body, and the flow path is formed by the inner peripheral surface of the rotation shaft at an axial position where the elastic body is disposed.

A dynamic damper includes: a mass body that is disposed inside a rotation shaft and extends along a shaft center of the rotation shaft; and an elastic body interposed between the mass body and the rotation shaft. Further, the mass body is allowed to vibrate to a linear motion state, the elastic body includes: first and second contact surfaces, when the gear generates vibration so as to fall from a radial direction of the rotation shaft to an axial direction side of the rotation shaft, compressive stress acts on the elastic body by the mass body vibrating so as to push the first contact surface in response to the vibration, and when the gear generates vibration along the axial direction, compressive stress acts on the elastic body by the mass body coming in the linear motion state and vibrating so as to push the second contact surface.

A frictional damper is designed with a tubular housing having a longitudinal axis, with a tappet, which is displaceable in the housing along the longitudinal axis and is led out at an open end of the housing, with a frictional element lying against the tappet and with a cap attached to the open end of the housing with axial prestressing relative to the longitudinal axis.

A shock stand absorber includes a resilient layer disposed on a planar frame structure and a plurality of vertical supports positioned to support the planar frame structure from below. Each of the vertical supports includes a resilient member between a first vertical support member and a second vertical support member in a telescoping arrangement. The resilient member is deformable in response to a telescoping movement between the first vertical support member and the second vertical support member. A plurality of connecting webs are formed between the vertical supports. The plurality of vertical supports are longitudinally aligned with a plurality of points on one or more paths defined on the bottom side of the planar frame structure.

Systems and methods for limiting transmission of vibrations and forces causing vibrations from one element to another are provided. A vibration isolator may include a compressible inner member and an outer member compressible with the inner member. The outer member may be positioned at least partially around the inner member to provide lateral support to the inner member. The outer member may maintain a consistent diameter and compression force when in a compressed state. The outer member may include a tube with a zero or near-zero Poisson's ratio.

A gas pressure spring is provided including a working cylinder which, together with a slidably mounted compensating piston, encloses a working chamber filled with a working medium. A slidably mounted working piston is fastened to a working rod. In the event of a temperature increase, a compensating medium in a compensating chamber expands. The compensating piston is acted upon by the pressure of the working medium and the pressure of the compensating medium) such that the volume of the working chamber is increased. The temperature dependency of the gas spring force should be reduced by a design which is as simple as possible. For this purpose, the compensating chamber is at least partially surrounded by the working rod. Thus, the compensating medium can be compactly accommodated, and the assembly of the gas spring is simplified.

A damping arrangement (1) for damping radial vibrations in a rotating shaft (2), the damping arrangement (1) comprising at least one first damping element (3), at least one second damping element (4), and a bearing arrangement (5) operably engaging the first damping element (3) and the second damping element (4). The bearing arrangement (5) comprises a first bearing member (6), a second bearing member (7), and a reference (8). The first bearing member (6) is rotatably mounted on the shaft (2) so that radial movement of the shaft (2) is transferred to the first bearing member (6), and is operably connected to the second bearing member (7) by the first damping element (3) and by a first steering structure (9). The first steering structure (9) allows only reciprocating movement of the first bearing member (6), and the shaft (2), in a first radial direction (D1), and the first damping element (3) dampens the reciprocating movement in the first radial direction (D1) with respect to the second bearing member (7). The second bearing member (7) is operably connected to the reference (8) by the second damping element (4) and by a second steering structure (10) allowing only reciprocating movement of the second bearing member (7), the first bearing member (6), and the shaft (2), in a second radial direction D2. The second damping element (4) dampens the reciprocating movement in the second radial direction (D2) with respect to the reference (8).