Abstract: A sealing apparatus which is capable of preventing static leakage of a target to be sealed without increasing sliding resistance with respect to a shaft, and a surface processing method of a disk member of the sealing apparatus which is capable of processing a surface of the disk member, such as a slinger, provided at the sealing apparatus. A surface processing method of a disk member of a sealing apparatus for forming a plurality of fine spiral grooves on a surface of the disk member provided at the sealing apparatus has a grinding member having a plurality of fine projections that is moved to an outer edge side while the grinding member is pressed against the surface of the disk member which relatively rotates around an axis, and the sealing apparatus includes a slinger at which a plurality of fine spiral grooves are randomly formed on another side surface of a flange portion.

Abstract: A sealing apparatus which seals an annular gap of a hole into which a shaft is to be inserted, includes a sealing apparatus body to be fitted into the hole, and a slinger to be attached to the shaft. The sealing apparatus body includes a reinforcing ring annular around an axis line, and an elastic body portion attached to the reinforcing ring and annular around the axis line. The slinger includes a flange portion extending toward an outer periphery side and annular around the axis line. The elastic body portion includes an end-face lip extending on one side in an axis line direction, contacting the flange portion from another side in the axis line direction, and annular around the axis line.

Abstract: A sealing apparatus 1 includes a sealing apparatus body 2 and a slinger 3. The sealing apparatus body 2 includes an annular reinforcing ring 10 and an annular elastic body portion 20. The slinger 3 includes a flange portion 31 which is an annular portion extending toward an outer periphery side. The elastic body portion 20 includes an annular end-face lip 21 extending toward an inner side and contacting an outer side surface 31d of the flange portion 31. At least one shallow groove 33 is formed on the outer side surface 31d of the flange portion 31 of the slinger 3.

Abstract: An object is to provide a fuel injection valve that restricts attachment of fuel injected from an injection hole to a combustion chamber. A fuel injection valve including a plurality of injection holes on a front end section, each of the plurality of injection holes including an upstream hole formed on an upstream side and a downstream hole that is connected to the upstream hole, formed on a downstream side of the upstream hole, and has a diameter different from that of the upstream hole. A center axis of a first downstream hole is configured to be eccentric to a center axis side of the fuel injection valve relative to a center axis of a first upstream hole of a first injection hole. An eccentricity amount or an eccentricity direction of a downstream hole relative to an upstream hole of at least one of the other injection holes is different from an eccentricity amount or an eccentricity direction of the first injection hole.

Abstract: A sealing apparatus which is capable of preventing static leakage of a target to be sealed without increasing sliding resistance with respect to a shaft, and a surface processing method of a disk member of the sealing apparatus which is capable of processing a surface of the disk member, such as a slinger, provided at the sealing apparatus. A surface processing method of a disk member of a sealing apparatus for forming a plurality of fine spiral grooves on a surface of the disk member provided at the sealing apparatus has a grinding member having a plurality of fine projections that is moved to an outer edge side while the grinding member is pressed against the surface of the disk member which relatively rotates around an axis, and the sealing apparatus includes a slinger at which a plurality of fine spiral grooves are randomly formed on another side surface of a flange portion.

Abstract: A sealing apparatus is provided for sealing a gap formed between a shaft and a hole into which the shaft is to be inserted, and a first length is greater than a second length, the first length being defined between a shoulder portion, connecting the base portion and the diameter reducing portion with each other, and a bent portion, connecting the diameter reducing portion and the diameter increasing portion with each other, and the second length being defined between the bent portion and a distal end portion.

Abstract: A sealing apparatus 1 includes a sealing apparatus body 2 and a slinger 3. The sealing apparatus body 2 includes an annular reinforcing ring 10 and an annular elastic body portion 20. The slinger 3 includes a flange portion 31 which is an annular portion extending toward an outer periphery side. The elastic body portion 20 includes an annular end-face lip 21 extending toward an inner side and contacting an outer side surface 31d of the flange portion 31. At least one shallow groove 33 is formed on the outer side surface 31d of the flange portion 31 of the slinger 3.

Abstract: A sealing apparatus 1 includes a sealing apparatus body 2 and a slinger 3. The sealing apparatus body 2 includes an annular reinforcing ring 10 and an annular elastic body portion 20 formed of an elastic body mounted on the reinforcing ring 10. The slinger 3 includes a flange portion 31 which is an annular portion extending toward an outer peripheral side. The elastic body portion 20 includes an end-face lip 21 which is an annular lip extending toward an inner side and contacts the flange portion 31 from an outer side. At least one groove 33 is formed on an outer side of the flange portion 31 of the slinger 3, on a surface of the end-face lip 21 on an inner peripheral side, a plurality of radial projections 23 are formed side by side in a circumferential direction, and at least one circumferential projection 24 is formed.

Abstract: A sealing apparatus which seals an annular gap of a hole into which a shaft is to be inserted, includes a sealing apparatus body to be fitted into the hole, and a slinger to be attached to the shaft. The sealing apparatus body includes a reinforcing ring annular around an axis line, and an elastic body portion attached to the reinforcing ring and annular around the axis line. The slinger includes a flange portion extending toward an outer periphery side and annular around the axis line. The elastic body portion includes an end-face lip extending on one side in an axis line direction, contacting the flange portion from another side in the axis line direction, and annular around the axis line.

Abstract: A friction pulley includes a rotatable rotary wheel having a groove on an outer periphery thereof, and a rubber ring formed so as to be able to be accommodated in the groove. The groove has a pair of side surfaces. The rubber ring has a contact surface which is brought into pressure contact with a rotary member so as to transmit power on an outer periphery thereof, and friction surfaces which are a pair of surfaces corresponding to the groove. At least in a power transmission state where the contact portion is brought into pressure contact with the rotary member so as to transmit power, the friction surfaces of the rubber ring are pushed to the side surfaces of the groove. The friction pulley-includes separation preventing devices for preventing separation of the rubber ring from the groove in an outward direction.

Abstract: A friction pulley includes a rotary wheel having a groove on an outer periphery of the rotary wheel rotatable about an axis, the groove being recessed toward an inner periphery side, and a rubber ring having an annular shape and can be accommodated in the groove. The groove has a pair of annular side surfaces facing each other in a direction of the axis and extending from an inner peripheral side toward an outer peripheral side. The rubber ring has a contact surface at an outer periphery of the rubber ring and friction surfaces that are a pair of surfaces corresponding to the pair of side surfaces of the groove. At least in a power transmission state where the contact surface is in pressure contact with the rotary member to transmit power, the friction surfaces of the rubber ring are pushed against the side surfaces of the groove.

Abstract: The intake noise reduction device is capable of suppressing hindrance to the airflow caused by deformation of a flow-regulating net portion and suppressing a reduction in the airflow amount. A linear portion having a mesh shape constituting a flow-regulating net portion 120 includes a circumferential linear portion 122 that extends circumferentially and, an radial width t1 in the upstream side, with respect to the airflow direction, of the circumferential linear portion 122 is larger than a radial width t2 in the downstream side thereof, and a radially outer surface 122A is constituted by a tapered surface that tapers toward the downstream side.

Abstract: A sealing device that is capable of suppressing the generation of unusual noise by guiding a gas flow and suppressing the generation of unusual noise caused by resonance between the gas flow and a pipe. An intake noise reduction portion (20) includes a flow-guiding net portion (21) for guiding a gas flowing in an intake pipe, an annular frame body portion (22) for supporting the flow-guiding net portion (21), a cylindrical portion (23) that extends from the frame body portion (22) in a direction in which the pipe extends, and is fitted into an inner circumferential surface of a second pipe (220) and a flange portion (24) that extends from an end portion of the cylindrical portion (23) toward an outer circumferential surface side, and is disposed in a space between an end surface of a first pipe (210) and an end surface of the second pipe (220). A gasket portion (10) is provided on both surfaces of the flange portion (24).

Abstract: Provided is an intake noise reduction device that can suppress an occurrence of noise in an intake pipe. An intake noise reduction device (100) disposed on a downstream side of a throttle valve in an intake pipe and including a flow-guiding net (110) that guides an air flow, wherein the flow-guiding net includes a mesh that is configured to be fine in a vicinity of a center of a flow passage in the intake pipe and to become coarser with distance from the vicinity of the center. For example, the mesh flow-guiding net (110) is formed of a plurality of radial portions (111) extending radially outward from the vicinity of the center of the flow passage in the intake pipe and a plurality of concentric portions (112) provided concentrically from the vicinity of the center.

Abstract: A sealing device that is capable of suppressing the generation of unusual noise by guiding a gas flow and suppressing the generation of unusual noise caused by resonance between the gas flow and a pipe. An intake noise reduction portion (20) includes a flow-guiding net portion (21) for guiding a gas flowing in an intake pipe, an annular frame body portion (22) for supporting the flow-guiding net portion (21), a cylindrical portion (23) that extends from the frame body portion (22) in a direction in which the pipe extends, and is fitted into an inner circumferential surface of a second pipe (220) and a flange portion (24) that extends from an end portion of the cylindrical portion (23) toward an outer circumferential surface side, and is disposed in a space between an end surface of a first pipe (210) and an end surface of the second pipe (220). A gasket portion (10) is provided on both surfaces of the flange portion (24).

Abstract: Provided is an intake noise reduction device that can suppress an occurrence of noise in an intake pipe. An intake noise reduction device (100) disposed on a downstream side of a throttle valve in an intake pipe and including a flow-guiding net (110) that guides an air flow, wherein the flow-guiding net includes a mesh that is configured to be fine in a vicinity of a center of a flow passage in the intake pipe and to become coarser with distance from the vicinity of the center. For example, the mesh flow-guiding net (110) is formed of a plurality of radial portions (111) extending radially outward from the vicinity of the center of the flow passage in the intake pipe and a plurality of concentric portions (112) provided concentrically from the vicinity of the center.

Abstract: An accordion-structured welded bellows for a semiconductor-manufacturing device is characterized in that a plurality of annular bellows plates having curved surfaces in a radial direction are connected in an alternating fashion on the outside-diameter side and the inside-diameter side, wherein the annular bellows plates have a processing-side bellows plate and a non-processing-side bellows plate, a gas layer is interposed between the two bellows plates, the processing-side bellows plate is configured as a thick plate, and the non-processing-side bellows plate is configured as a thin plate. The welded bellows is less likely to be damaged by foreign matter and to be able to use the non-processing-side bellows plate to compensate for any damage to the processing-side bellows plate.

Abstract: Provided are a plasma processing apparatus and a plasma processing method, by which plasma damage is reduced during processing. At the time of performing desired plasma processing to a substrate (5), a process chamber (2) is supplied with an inert gas for carrying in and out the substrate (5), pressure fluctuation in the process chamber (2) is adjusted to be within a prescribed range, and plasma (20) of the inert gas supplied in the process chamber (2) is generated. The density of the plasma (20) in the transfer area of the substrate (5) is reduced by controlling plasma power to be in a prescribed range, and the substrate (5) is carried in and out to and from a supporting table (4).

Abstract: A semiconductor fabrication device welded bellows of an accordion structure is characterized in that a plurality of annular bellows plates having faces curving in a radial direction are connected alternatingly at the outside diameter side and inside diameter side, wherein the annular bellows plates are provided with a treatment-side bellows plate and a non-treatment-side bellows plate, a gas layer disposed between the two bellows plates, the treatment-side bellows plate being of lesser thickness, and the non-treatment-side bellows plate being of greater thickness. The bellows are highly resistant to damage caused by foreign matter; or, in the unlikely case that the treatment-side bellows plate becomes damaged, the damage can be compensated for by the non-treatment side bellows plate.

Abstract: An accordion-structured welded bellows for a semiconductor-manufacturing device is characterized in that a plurality of annular bellows plates having curved surfaces in a radial direction are connected in an alternating fashion on the outside-diameter side and the inside-diameter side, wherein the annular bellows plates have a processing-side bellows plate and a non-processing-side bellows plate, a gas layer is interposed between the two bellows plates, the processing-side bellows plate is configured as a thick plate, and the non-processing-side bellows plate is configured as a thin plate. The welded bellows is less likely to be damaged by foreign matter and to be able to use the non-processing-side bellows plate to compensate for any damage to the processing-side bellows plate.