A vibration damping device including a main unit including first and second attachments connected by a rubber body, the second attachment including metallic first and second connectors inserted into metallic first and second grooves of a bracket. The metal is exposed on outer and lower faces of the first connector to be in metal-to-metal contact with groove-inside bottom and lower faces of the first groove. An upper urging rubber on the first connector contacts a groove-inside upper face of the first groove. The metal is exposed on a lower face of the second connector to be in metal-to-metal contact with a groove-inside lower face of the second groove. Upper and outer urging rubbers on the second connector contact groove-inside upper and bottom faces of the second groove. Detent engagers between the connectors and the grooves prevent dislodgment of the connectors from the grooves.

A spring configured to be fixed to a housing and nested within a dial that is rotatable about the spring. The dial has a plurality of spaced apart inwardly facing teeth that are adjacent the spring. The spring is configured to facilitate rotation of the dial about the spring. The spring includes a central body having at least one anchor configured to connect the spring to the housing. The spring also includes at least one arm having a first end connected to the central body. The spring also includes a second end of the arm that is connected to a bulb. The bulb can be enclosed and include an exterior surface with a node that is on distal from the central body. The node is sized to fit in a space between adjacent teeth. The enclosed bulb biases the node toward the spaces between the teeth.

The present disclosure relates to a stand having an improved structure to stably support a display module, and a display apparatus including the same. The stand is configured to support a display module. The stand includes a base assembly including a first base and a second base coupled to the first base, a support bar extending in a height direction of the stand to be coupled to the base assembly, a first vibration damper installed on the first base, the first vibration damper including a moving member exposed to the outside of the first base and provided to move in the height direction of the stand, and a second vibration damper installed on the second base, the second vibration damper including a rotation member provided to exposed to the outside of the second base and move in the height direction of the stand and rotatably provided to impart mobility to the stand.

A shockproof element is applied to an electronic element. The shockproof element includes a first elastic portion, a second elastic portion and a connecting portion. The first elastic portion defines an opening. The second elastic portion is disposed corresponding to the first elastic portion. The second elastic portion includes a hollow column. The hollow column extends from the second elastic portion into the opening of the first elastic portion. The hollow column can fix the electronic element, and the first elastic portion and the second elastic portion jointly hold the electronic element. The connecting portion connects to the first elastic portion and the second elastic portion. An electronic device, which includes the shockproof element, the electronic element, a first housing and a second housing, is also provided.

An adjustable vibration damper for a vehicle may include an outer tube, an intermediate tube, and an inner tube arranged coaxially. A concentric compensation chamber between the outer tube and the intermediate tube may receive a hydraulic fluid and a gas. A piston rod may include a piston disposed movably in the inner tube and dividing an interior of the inner tube into first and second working chambers. The adjustable vibration damper may also include first and second damper valves arranged on an outer wall. The first working chamber may be fluidically connected to the compensation chamber by the first damper valve for adjustment of a pressure stage, and the second working chamber may be fluidically connected to the compensation chamber by the second damper valve for adjustment of a traction stage.

A support for household appliance comprises a hydraulic plate; a sheath connected with the hydraulic plate; a regulating support in the sheath; an accommodation chamber formed by the hydraulic plate, the sheath and the regulating support; and a flexible accommodation body, which accommodates a liquid medium and is arranged in the accommodation chamber. The flexible accommodation body extends and retracts to drive the regulating support to axially move in the sheath for leveling under action of pressure; and the sheath and/or the regulating support are/is provided with a guiding limiting mechanism for limiting the circumferential rotation of the regulating support relative to the sheath. A yielding part corresponding to the guiding limiting mechanism is formed in the hydraulic plate. The overall height of the support for household appliance is lowered, and the stability of shock absorption of the support for household appliance is improved.

A crank cap assembly including a single crank cap rotatably supporting a crankshaft includes: a fastening member fastened to the crank cap, a mass member; and an elastic rubber member elastically attaching the mass member to the crank cap. The elastic rubber member includes a first rubber part arranged between the fastening member and the mass member and a second rubber part arranged between the crank cap and the mass member. The first rubber part and the second rubber part are arranged to be aligned in the mounting direction when attaching the crank cap to an engine body, and the elastic rubber member is formed so that a length in the mounting direction is longer than a maximum length in a cross-section of the elastic rubber member perpendicular to the mounting direction.

A vibration damping device for reducing vibration of an elevator rope includes a displacement amplifier arranged around a region from a first portion of the elevator rope drawn and a second portion of the elevator rope drawn from an opposite side of one or more sheaves in parallel with the first portion. The displacement amplifier is configured to amplify a displacement of each of the first portion and the second portion of the elevator rope. The device also includes a limiting member that controls displacement amplification performed by the displacement amplifier such that the displacement of the first portion or the second portion amplified by the displacement amplifier does not become greater than a first displacement, which is a displacement of the elevator rope by which the elevator rope is not allowed to return to an equilibrium position of the vibration.

A roof greening, wind breaking and vibration suppressing apparatus, and a building. The roof greening, wind breaking and vibration suppressing apparatus comprises a plant container (11) and a buffering device (20). The buffering device (20) comprises elastic vibration isolation components (21) and damping buffer components (22). Soil (12), water (14), fertilizers (13), a plant and the plant container (11) constitute an inertial body (10). The inertial body (10), the elastic vibration isolation components (21), and the damping buffer components (22) constitute a system mounted on a building. When an earthquake and strong wind strike, the inertial body (10) moves with respect to the building under the action of inertia, each elastic vibration isolation component (21) and each damping buffer component (22) absorb energy and achieve the effect of vibration isolation, passive energy dissipation or tuned vibration absorption, thereby enhancing the earthquake resistance and wind-breaking capability of the building, and expanding the conventional roof greening function.

An object of the invention is to provide a vibration damping system that can avoid the occurrence of resonance of an elevator rope regardless of the vibration frequency of a vibration source. A vibration damping system (200) includes a displacement amplifier (7), a calculation unit (66), and a displacement amplification control unit (67). The displacement amplifier (7) is arranged along a given position in the longitudinal direction of the elevator rope. The displacement amplifier (7) amplifies a displacement due to vibration of the elevator rope based on a variable amplification factor. The calculation unit (66) calculates the natural frequency of the elevator rope. The displacement amplification control unit (67) controls the displacement amplification of the displacement amplifier (7) based on the natural frequency calculated by the calculation unit (66) and a preset vibration frequency.