Abstract: A vibration isolator (10) includes a first attachment member (11), a second attachment member (12), an elastic body (13), and a partition member (16) configured to partition a liquid chamber in the first attachment member in which a liquid (L) is sealed into a first liquid chamber (14) and a second liquid chamber (15). A communicating passage (30) configured to communicate the first liquid chamber with the second liquid chamber is provided in the partition member. A flow changing protrusion (31) is provided at an inner circumferential surface (30a) of the communicating passage. A guide surface (32) opposite to the communicating passage and intersecting the axial direction (O) of the communicating passage is provided at the flow changing protrusion. A passing hole (34) which is open toward both sides in the axial direction is formed by a projecting end (31b) of the flow changing protrusion and another place on the inner circumferential surface (30b) of the communicating passage.

Abstract: Swirl chamber units (31) allowing a first liquid chamber (14) and a second liquid chamber (15) to communicate with each other are formed in a partitioning member of a vibration-damping device (10) of the present invention. Each swirl chamber unit (31) includes a first communication hole (32a) opening to the first liquid chamber (14), and a second communication hole (32b) opening to the second liquid chamber (15); a first swirl chamber (33a) communicating with the first liquid chamber (14) via the first communication hole (32a), and a second swirl chamber (33b) communicating with the second liquid chamber (15) via the second communication hole (32b); and a flow regulation passage (34) that allows the first swirl chamber (33a) and the second swirl chamber (33b) to communicate with each other and opens to the swirl chambers (33a, 33b) in circumferential directions of the respective swirl chambers (33a, 33b).

Abstract: The present invention is a vibration-damping device (10, 60, 80) which is provided with: a first attachment member (11) joined to one of a vibration generating unit and a vibration receiving unit and a second attachment member (12) joined to an other thereof; an elastic body which joins the first attachment member (11) to the second attachment member (12); a partition member (16, 90) which partitions a liquid chamber in the first attachment member (11) into a first liquid chamber (14) and a second liquid chamber (15), and in which at least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) as a portion of a wall surface thereof. The partition member (16, 90) is provided with a communicating passage (30), and the communicating path (30) is provided with a branching section (33) and a confluence section (32, 70, 84, 101).

Abstract: The present invention relates to a vibration-damping device (10) which is provided with: a tubular first attachment member (11) joined to one of a vibration generating unit and a vibration receiving unit; a second attachment member (12) joined to the other thereof; an elastic body (13) which joins the first attachment member (11) to the second attachment member (12); and a partition member (16) which partitions a liquid chamber in the first attachment member (11) into a first liquid chamber (14) and a second liquid chamber (15), and in which at least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) as a portion of a wall surface thereof. A vortex chamber unit (30) through which the first liquid chamber (14) communicates with the second liquid chamber (15) is formed in the partition member (16).

Abstract: The present invention is a liquid-tight the vibration-damping device (10). In this vibration-damping device (10), a limiting passage (24) includes a main body passage (25) disposed inside a partition member (16), a first communication section (26) configured to communicate the main body passage (25) and a first liquid chamber (14), and a second communication section (27) configured to communicate the main body passage (25) with a second liquid chamber (12). At least one of the first communication section (26) and the second communication section (27) includes openings (31).

Abstract: The present invention includes a first mounting member (11); a second mounting member (12); an actuator (14) which dampens and absorbs input vibration by reciprocally moving a movable element (13) in accordance with input vibration; an actuator case (15) which houses the actuator therein; and a relay connector (17) which is mounted on the actuator case and electrically connects the connector (16) of the actuator and an external power source. The relay connector includes a terminal (27) which connects the connector of the actuator and the external power supply, and a housing (28) in which the terminal is installed. The actuator case is formed with an insertion hole (31) through which the terminal is inserted, and a mounting cylinder (32) surrounding the insertion hole is provided to protrude from the actuator case. One of the mounting cylinder and the housing is airtightly fitted to the inside of the other thereof via a packing (35).

Abstract: 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).

Abstract: A vibration isolator (10) is a liquid-enclosed vibration isolator and includes: a tubular first mounting member (11) connected to one of a vibration generator and a vibration absorber, and a second mounting member (12) connected to the other; an elastic body (13) elastically connecting the mounting members; and a partition member (16) partitioning a liquid chamber (19) in the first mounting member (11) within which a liquid (L) is enclosed into a primary liquid chamber (14) that uses the elastic body (13) as a part of a wall surface thereof and a secondary liquid chamber (15), wherein the partition member (16) is formed with a restriction passage (24) communicating the primary and secondary liquid chambers (14, 15) with each other, and a porous body (28) having numerous pores (31), which are disposed in parallel so as to communicate a side of the primary liquid chamber (14) and a side of the secondary liquid chamber (15) with each other, is arranged in the restriction passage (24).

Abstract: Disclosed is an MgO target for sputtering, which can accelerate a film formation rate even when MgO is used as a target for sputtering in the formation of an MgO film. The MgO target for sputtering, which includes MgO and an electroconductive material as main components, and in which the electroconductive material is capable of imparting orientation to a MgO film when the MgO film containing the electroconductive material is formed by a DC sputtering.

Abstract: A laminar flow path (34) is opened into the vortex chambers (33a and 33b) from inner peripheral surfaces that face in radial directions of the vortex chambers (33a and 33b) being aimed in circumferential directions of the vortex chambers (33a and 33b) among wall surfaces defining the vortex chambers (33a and 33b). A communication hole (32b) is opened into the vortex chamber (33a and 33b) from an end surface that faces in a direction of center axis of the vortex chamber (33a and 33b) being aimed in a direction of a center axis among the wall surfaces defining the vortex chamber (33a and 33b). Blocking members (36a and 36b) extending in the direction of the center axis so as to surround the communication hole (32b) from an outside in the radial direction are provided within the vortex chambers (33a and 33b). The blocking members (36a and 36b) are provided with flow openings (37a and 37b) penetrating the blocking members (36a and 36b).

Abstract: 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).

Abstract: This disclosure is to provide an anti-vibration device with reduced high frequency vibration. The anti-vibration device (1) according to this disclosure has: elastic bodies (4); and an intermediate plate (5) arranged between the elastic bodies (4) and connected to the elastic bodies (4). The intermediate plate (5) has an acoustic impedance (Z2) larger than the elastic bodies (4), and a perpendicular line (O) of the intermediate plate (5) is arranged between the elastic bodies (4) in a manner inclined with respect to the vibration input direction at an angle (?1).

Abstract: A vibration isolator includes first and second mounting members; an elastic body connecting the mounting members; a partition member partitioning a liquid chamber in the first mounting member into a primary liquid chamber using the elastic body as a part of a wall surface thereof and a secondary liquid chamber; and a movable member housed in a housing chamber provided within the partition member, the movable member being deformable or displaceable in an axial direction of the first mounting member. The partition member includes communicating holes that extend from a portion of the partition member which is exposed to the primary liquid chamber or the secondary liquid chamber toward an inside of the partition member and are opened toward the movable member. The partition member is equipped with partition plate parts dividing the housing chamber from the primary liquid chamber and dividing the housing chamber from the secondary liquid chamber.

Abstract: A vibration isolator includes a partition member (15) that partitions a liquid chamber (16) in a first mounting member (11) into a primary liquid chamber (16a) using an elastic body (13) as a part of a wall surface thereof and a secondary liquid chamber (16b), and a movable member (23) housed in a housing chamber (20) provided within the partition member (15), the movable member being free to be deformed or displaced in an axial direction of the first mounting member (11). The partition member (15) is provided with a plurality of communicating holes (22) that extend from a portion of the partition member (15) which is exposed to the primary or secondary liquid chamber (16a or 16b) toward the inside of the partition member and are open toward the movable member (23).

Abstract: A torque rod (1) has two elastic bushes (2, 3) to be mounted respectively to a vibration-generating side and a vibration-receiving side, and a connecting rod (4) connecting the two elastic bushes (2, 3). The actively controlled vibration cancellation means (5) is an actuator including: the shaft (5a) having two opposite ends mounted to the connecting rod (4) and extending in an axial direction of the connecting rod (4), the mass member (5b) shaped in a tube to surround the shaft (5a); a coil (5e) and a winding core (5f) fixed to the shaft (5a) in the tube-shaped mass member (5b); a permanent magnet (5d) mounted to an inner peripheral surface of the tube-shaped mass member (5b) or the shaft (5a), and a connecting member (5c) for connecting at least one end of the tube-shaped mass members (5b) to the shaft (5a).

Abstract: A partitioning member (16) of a vibration-damping device (10) is provided with a communication chamber (30), a first communication hole (31) and a second communication hole (32). The first communication hole (31) and the second communication hole (32) are arranged to be offset from each other in the axial direction (O). The first communication hole (31) is formed by the inside of a first protruding tube (31a) that protrudes into the communication chamber (30) from the first wall surface (30a). The second communication hole (32) is formed by the inside of the second protruding tube (32a) that protrudes into the communication chamber (30) from the second wall surface (30b). By including the configuration as described above, simplification of structure can be achieved.

Abstract: A vibration-damping device (10) in the present application includes a first limiting passage (51) and a second limiting passage (52). The first limiting passage (51) includes pressure loss units (53a, 53b). Each of the pressure loss units (53a, 53b) is provided with an intermediate chamber (55), a first communication passage (57), and a second communication passage (58). An opening axis (L1) of a first opening (59) that opens toward the inside of the intermediate chamber (55) in the first communication passage (57) and an opening axis (L2) of a second opening (60) that opens toward the inside of the intermediate chamber (55) in the second communication passage (58) are offset from each other. At least one of the first opening (59) and the second opening (60) opens toward a wall surface that defines the intermediate chamber (55).

Abstract: A vibration-damping device (10) includes a first attachment member (11), a second attachment member (12), an elastic body (13), and a partitioning member (16). Limiting passages (31, 32) are formed in the partitioning member (16), and the limiting passages (31, 32) include a first limiting passage (31) and a second limiting passage (32). An inner peripheral surface of the first limiting passage (31) is provided with flow changing protrusions (33, 34) that protrude toward an inner side in a radial direction of the first limiting passage (31) and that changes the flow of a liquid (L) that flows through the first limiting passage (31) in an axial direction of the first limiting passage (31). In a vertical cross-sectional view passing through an axis of the first limiting passage (31) and through the flow changing protrusions (33, 34), the first limiting passage (31) and the flow changing protrusion1 (33, 34) have symmetrical shapes with respect to the axis.

Abstract: A vibration-damping device (10) includes a first attachment member (11), a second attachment member (12), an elastic body, and a partitioning member (16). A limiting passage (30) that allows a main liquid chamber (14) and an auxiliary liquid chamber (15) to communicate with each other is formed in the partitioning member (16). An inner peripheral surface of the limiting passage (30) is provided with a flow changing protrusion (31) that protrudes toward an inner side in a radial direction of the limiting passage (30) and that changes the flow of a liquid (L) that flows into the limiting passage (30) from the main liquid chamber (14) and flows through the limiting passage (30) in an axial direction of the limiting passage (30). In a vertical cross-sectional view passing through an axis of the limiting passage (30) and through the flow changing protrusion (31), the limiting passage (30) and the flow changing protrusion (31) have symmetrical shapes with respect to the axis.

Abstract: The present invention relates to a vibration-damping device (10) which is provided with: a tubular first attachment member (11) joined to one of a vibration generating unit and a vibration receiving unit; a second attachment member (12) joined to the other thereof; an elastic body (13) which joins the first attachment member (11) to the second attachment member (12); and a partition member (16) which partitions a liquid chamber in the first attachment member (11) into a first liquid chamber (14) and a second liquid chamber (15), and in which at least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) as a portion of a wall surface thereof. A vortex chamber unit (30) through which the first liquid chamber (14) communicates with the second liquid chamber (15) is formed in the partition member (16).