A partition member (16) is provided with a whirl chamber unit (31a, 31b) that causes two liquid chambers to communicate with each other, the whirl chamber unit (31a, 31b) includes a whirl chamber (33a, 33b) that whirls a liquid flowing therein, a rectification passage (34a, 34b) that causes one liquid chamber to communicate with the whirl chamber (33a, 33b) and that is opened in the whirl chamber (33a, 33b) in a circumferential direction of the whirl chamber (33a, 33b), and a communication hole (32a, 32b) that causes the other liquid chamber to communicate with the whirl chamber (33a, 33b). The whirl chamber (33a, 33b) forms a whirl flow of a liquid depending on a flow rate of the liquid flowing from the rectification passage (34a, 34b) and causes the liquid to flow from the communication hole (32a, 32b). The whirl chamber unit (31a, 31b) includes a plurality of first whirl chamber units (31a) in which a first whirl chamber (33a) as the whirl chamber communicates with the first liquid chamber (14) via a first rectification passage (34a) as the rectification passage and communicates with the second liquid chamber (15) via a first communication hole (32a) as the communication hole. The vibration prevention device (10) can exhibit damping characteristics with high accuracy.

A structure for fastening an engine mount is provided and includes an engine bracket that is mounted on an engine body coupled to a first end of a support bracket and a second end of the support bracket is connected to the engine mount. The support bracket has a bolt aperture that receives a center bolt protruding from an upper surface of the engine mount. The support bracket is placed on a mounting seat on the upper surface of the engine mount. The mounting seat is recessed downward from the upper surface of the engine mount. The height difference between an engine side portion and an engine mount side portion is reduced to a depth of the recession of the mounting seat. The rigidity and NVH performance are improved and a weight of the support bracket is reduced by omitting the damper.

An engine mount structure capable of efficiently absorbing vibration input from an engine is provided. The engine mount structure includes a front mount device 20 which is connected to an engine 1 and a subframe 10 to suppress vibration transmission from the engine 1 side to the subframe 10 side. A dynamic damper 26 connected to the subframe 10 to suppress vibration of the subframe 10 is disposed in a hole portion 11b, and an opening of the hole portion 11b is formed in an upper surface portion 11a of a front subframe member component 11 located on a lower side of the front mount device 20.

An example mount assembly includes an upper mount and a lower mount. The assembly also includes an inertia track having a central opening defining an axis. The inertia track defines a passage in fluid communication with the first chamber and the second chamber. The inertia track is moveable along the axis.

A vibration damping device includes a first cylindrical attachment member (11) which is connected to one of a vibration generating portion and a vibration receiving portion, a second attachment member (12) which is connected to the other thereof, an elastic body (13) which connects both attachment members (11 and 12), and a partition member (17) which divides a liquid chamber (14), in which a liquid (L) is sealed and which is positioned within the first attachment member (11), into a primary liquid chamber (15) having the elastic body (13) as a portion of a wall surface, and into a secondary liquid chamber (16). Limiting passages (21 and 22) which communicate with the primary liquid chamber (15) and the secondary liquid chamber (16) are formed in the partition member (17). The limiting passages (21 and 22) include the first limiting passage (21) which generates resonance with respect to input of idle vibration, and the second limiting passage (22) which generates resonance with respect to input of shake vibration. Flow regulation chambers (23 and 24) which communicate with the primary liquid chamber (15) or the secondary liquid chamber (16) and the first limiting passage (21) are provided in the partition member (17). The flow regulation chambers (23 and 24) convert the flow of the liquid (L), which flows into the flow regulation chambers (23 and 24) during the input of shake vibration, into a swirl flow.

A unit mounting in a vehicle, in which a drive unit is attached via a unit bearing to a body-side bearing bracket, which unit bearing is a rubber-metal bearing having a sleeve-shaped bearing core, which is screwed together with the body-side bearing bracket by a bearing bolt guided through the sleeve-shaped bearing core. The drive unit has a unit housing, in which a bearing receptacle is formed for the unit bearing. The housing-side bearing receptacle is formed as a bearing cup open on one side having a hollow cylindrical receptacle space, specifically in particular having a closed bearing base, from which a cylindrical circumferential peripheral wall is raised.

A hydraulic mount assembly includes a mount body defining a cavity. A powertrain includes a dynamic mass, and a structure that supports the dynamic mass. The assembly is attached to the structure and supports the dynamic mass. A first plate is fixed relative to the mount body inside the cavity to separate the cavity into a first chamber and a second chamber. The first plate defines a plurality of first passages that fluidly connects the first and second chambers. A decoupler is disposed between the first and second chambers. An actuator is coupled to the first plate. The decoupler is movable in response to actuation of the actuator. The decoupler abuts the first plate when in a locked position to prevent fluid communication through the first passages. The decoupler is movable relative to the first plate when in an unlocked position to allow fluid communication through the first passages.

A low-profile shock isolating payload mounting assembly comprises a first mount, a second mount, and an isolator. The second mount is movable relative to the first mount and comprises a riser comprising an inclined surface. The isolator comprises an inner frame and an outer frame. The inner frame couples to the first mount and comprises a platform and a leg extending from the platform. The leg is inclined to be complementary to the inclined surface of the second mount. The outer frame couples to the second mount and comprises an opening for accessing the platform of the inner frame. The rail is inclined so as to be complementary to the leg to capture the leg between the rail of the outer frame and the inclined surface of the second mount. The isolator operates to dampen vibrations and shocks propagating between the first and second mounts.

In a vibration dampening device (10, 110) in an embodiment, a restriction passage (24) includes a first communication portion (26) that is open to a main liquid chamber (14), a second communication portion (27) that is open to an auxiliary liquid chamber (15), and a main body flow path (25) that causes the communication portions to communicate with each other, the first communication portion (26) includes a plurality of pores (31) penetrating a first barrier (28) having a surface (28a) facing the main liquid chamber (14), and a protrusion (40, 140) which protrudes toward the main liquid chamber (14) or the auxiliary liquid chamber (15) is formed over an entire circumference of an opening circumferential edge portion of the pore (31) in the surface (28a).

A device for supporting a component in a vehicle including a support part having a first end portion, a second end portion, and a retaining part at the second end portion for connection to a damping element; a bearing mounting for receiving the component, which has a connection area for connection to a stop element and is arranged a distance from the support part in a radial direction with respect to the longitudinal axis a stop element arranged in the radial direction between the load receptacle and support part, fixed to the connecting portion and comprising a stop surface facing the support part; and a damping element for damping vibrations, fixed to the stop element and support part. In embodiments, the stop element is supported by the damping element movably with respect to the support part in the radial direction and an axial direction with respect to the longitudinal axis.