Abstract: A suspension arm includes a main body. The main body includes a curved portion curved along a longitudinal direction and has a closed section. The main body includes an inner side wall, an outer side wall, a first side wall, and a second side wall. The inner side wall corresponds to an inner side of a curve of the curved portion. The outer side wall corresponds to an outer side of the curve of the curved portion. A thickness of the inner side wall is larger than a thickness of the outer side wall. In sectional view of the main body perpendicular to the longitudinal direction, each of a length of the first side wall and a length of the second side wall is longer than each of a length of the inner side wall and a length of the outer side wall.

Abstract: A movable magnet is configured by alternately magnetizing an even number of magnetic poles at an outer periphery of a shaft part; a number of core magnetic poles as magnetic poles of a core body and a number of magnetic poles of the movable magnet are equal to each other; the core magnetic poles are disposed to face the movable magnet with an air gap therebetween on an outer peripheral side of the movable magnet in a direction orthogonal to the shaft part; a drive unit is provided with a magnet position holding part provided to face the movable magnet and magnetically attracts the movable magnet to a reference position; the core body is formed to surround an even number of the core magnetic poles; and a coil body is disposed at the core body adjacent to each of the even number of the core magnetic poles.

Abstract: An electret includes an electret layer. The electret layer is formed by subjecting a composite film in which inorganic dielectric particles are dispersed and held in a base film to a polarization treatment. The inorganic dielectric particles are mainly composed of an inorganic dielectric material having a bandgap energy of 4 eV or more.

Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a magnet is fixed and being capable of performing a reciprocating rotation around an axis; a base portion including a pair of wall portions for supporting the shaft part via a bearing such that the shaft part is rotatable; a core assembly including: a core body having a plurality of magnetic poles facing an outer circumference of the magnet to sandwich the magnet, a coil body wound around the core body and energized to cause a reciprocating rotation of the movable body, and a magnet position holding portion generating a magnetic attraction force between the magnet position holding portion and the magnet to define a reference position of the reciprocating rotation; and a preload applying part externally fitted to the shaft part and configured to apply a preload to the bearing.

Abstract: The present invention includes: a movable body including a magnet fixed to an other end portion side of a shaft part to which a movable object is connected at one end portion side; a core assembly including a core body including a plurality of magnetic poles facing an outer circumference of the magnet, a coil body wound around the core body, a magnet position holding portion energized to generate a magnetic attraction force between the magnet position holding portion and the magnet to define a reference position of the reciprocating rotation; and a circuit board disposed to cover the core assembly at the other end side, in which the coil body includes a terminal part to which an end portion of a coil is connected and that is disposed to protrude to the circuit board side so as to be connected to a circuit of the circuit board.

Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a movable object is connected, and a magnet; a base portion including a pair of wall portions disposed to sandwich the movable object and support the shaft part; a core assembly including a core body including a plurality of magnetic poles, a coil body, and a magnet position holding portion to define a reference position of the reciprocating rotation, the core assembly being attached to one wall portion; and a sensor board that is attached to an other wall portion and on which a sensor configured to detect a rotational angle of the one end portion of the shaft part is mounted, in which the sensor board is disposed such that the sensor faces the other wall portion from an outer surface side of the other wall portion and detects the rotational angle.

Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a movable object is connected at one end portion side of the shaft part, and a magnet fixed to an other end portion side of the shaft part, the movable body being supported to be capable of performing a reciprocating rotation about an axis; a core assembly including a magnet position holding portion defining a reference position of the reciprocating rotation; and a sensor board on which a sensor for detecting a rotational angle of the shaft part is mounted, the sensor board being disposed to cover the core assembly from the other end portion side, with the sensor facing the magnet side.

Abstract: A rotary reciprocating drive actuator includes: a main body unit including: a movable body including a shaft part to which a movable object is connected and to which a magnet is fixed, and a base portion including a pair of wall portions disposed to sandwich the movable object, the base portion supporting the shaft part by the pair of wall portions; a core assembly including: a core body including a plurality of magnetic poles facing an outer circumference of the magnet, a coil body, and a magnet position holding portion; and a connecting surface portion that is integrally disposed on the one end portion side of the core assembly, and that is attached to the one wall portion in a state where the shaft part is inserted into an opening portion and the magnet is disposed in the core assembly.

Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a magnet is fixed, the movable body being configured to perform a reciprocating rotation about an axis; a base portion including a pair of wall portions for supporting the shaft part via a bearing; and a core assembly including: a core body including a plurality of magnetic poles facing the magnet, a coil body, and a magnet position holding portion to define a reference position of the reciprocating rotation, the core assembly being fixed to one wall portion, in which at least one of the base portion, the core body, or the core assembly includes a positioning fixation part for positioning and fixing the at least one of the base portion, the core body, or the core assembly to a fixation target object in a direction parallel to the shaft part.

Abstract: A filter cleaning system includes a storage unit that stores liquid that is passed through a filter; a liquid supply path that sends the liquid stored in the storage unit to the filter; a circulation path that returns the liquid sent from the filter to the storage unit; a first supply unit that supplies a first liquid to the storage unit; and a second supply unit that supplies a second liquid having a surface tension lower than that of the first liquid and an affinity for the first liquid, to the storage unit.

Abstract: A drive control device for a multi-axle-driving electrified vehicle including a first driving axle that is rotationally driven by a first electric motor and a second driving axle that is rotationally driven by a second electric motor includes: an axle load distribution change control unit configured to perform axle load distribution change control for changing an axle load distribution for the first driving axle and the second driving axle; and a drive control unit configured to control operations of the first electric motor and the second electric motor. The drive control unit is configured to perform driving force change control for changing driving forces of the first electric motor and the second electric motor when the axle load distribution change control unit performs the axle load distribution change control.

Abstract: A hexagonal boron nitride powder having an average longer diameter (L) of primary particles in the hexagonal boron nitride powder of more than 10.0 ?m and 30.0 ?m or less, an average thickness (D) of the primary particles in the hexagonal boron nitride powder of 1.0 ?m or more, a ratio of the average longer diameter (L) to the average thickness (D), [L/D], of 3.0 or more and 5.0 or less, and a content of primary particles having a ratio of a longer diameter (1) to a thickness (d), [l/d], of 3.0 or more and 5.0 or less of 25% or more, a method for producing the hexagonal boron nitride powder, and a resin composition and a resin sheet each containing the hexagonal boron nitride powder.

Abstract: A vibration actuator that cooperates with a coil and a magnet to vibrate a movable body with respect to a stationary body, including: the stationary body including the coil and a core around which the coil is wound; a shaft part; and the movable body including the magnet, the movable body being movably supported by the stationary body via the shaft part, wherein the core is disposed along an axial direction of the shaft part, and includes a core-side magnetic pole to be excited by energization to the coil, the magnet includes a magnet-side magnetic pole disposed so as to face the core-side magnetic pole with a gap therebetween, and the vibration actuator further includes a spring part elastically supporting the movable body with respect to the stationary body, linearly movably in the axial direction in a reciprocating manner, and rotationally movably about an axis in a reciprocating manner.

Abstract: A silicon-containing oxide-coated aluminum nitride particle including an aluminum nitride particle and a silicon-containing oxide coating covering the surface of the aluminum nitride particle. The content of carbon atoms is less than 1000 ppm by mass, and an Si/Al atom ratio of the surface as measured by AES analysis is 0.29 or more and 5.0 or less. In another aspect, the coverage of the silicon-containing oxide coating covering the surface of the aluminum nitride particle as measured by LEIS analysis is 15% or more and 100% or less.

Abstract: A rotary reciprocating drive actuator capable of increasing the size and amplitude of a movable object such as a mirror, and of stabilizing the drive performance is provided. The rotary reciprocating drive actuator includes a movable part including a rotating shaft, a fixed part supporting the rotating shaft, and a driving part that includes a coil and a core disposed on the fixed part and a magnet disposed on the rotating shaft, and rotates the rotating shaft about the axis thereof with respect to the fixed part by utilizing electromagnetic interaction. The fixed part includes first and second supports disposed so as to face each other with the magnet therebetween in the axial direction. The rotating shaft is rotatably attached to the first and second supports via first and second bearings. One of the first and second bearings is a rolling bearing, and the other is a slide bearing.

Abstract: A method of manufacturing a silicon-containing oxide-coated aluminum nitride particle; a method of manufacturing a heat dispersing resin composition containing the silicon-containing oxide-coated aluminum nitride particle; and the silicon-containing oxide-coated aluminum nitride particle. The method of manufacturing includes: a first step of covering the surface of the aluminum nitride particle with an organic silicone compound including a specific structure; and a second step of heating the aluminum nitride particle covered with the organic silicone compound at a temperature of 300° C. or more and less than 1000° C., wherein the content of carbon atoms in the silicon-containing oxide-coated aluminum nitride particle is less than 1000 ppm by mass.

Abstract: A method of manufacturing a silica-coated boron nitride particle including a first step of covering the surface of the boron nitride particle with an organic silicone compound having a specific structure and a second step of heating the boron nitride particle covered with the organic silicone compound at a temperature of 500° C. or more and 1000° C. or less, wherein the content of carbon atoms in the silica-coated boron nitride particle is 1000 ppm by mass or less. Also disclosed is a method of manufacturing a heat dissipating resin composition containing the silica-coated boron nitride particle; and silica-coated boron nitride particles.

Abstract: A method for producing silicon-containing oxide-coated aluminum nitride particles including aluminum nitride particles and a silicon-containing oxide coating covering a surface of each of the aluminum nitride particles. The method includes a first step including mixing aluminum nitride particles and an organic silicone compound solution in which an organic silicone compound containing a specific structure is dissolved in a solvent to form a mixture and then heating the mixture to remove the solvent and to obtain aluminum nitride particles coated with the organic silicone compound; and a second step including heating the aluminum nitride particles coated with the organic silicone compound at a temperature of 300° C. or more and 1,000° C. or less.

Abstract: An inorganic particle dispersion resin composition, containing: a resin; and inorganic particles, in which the inorganic particles include silica-covered aluminum nitride particles and alumina particles, and the silica-covered aluminum nitride particles include aluminum nitride particles and a silica film covering surfaces of the aluminum nitride particles. A total content of the inorganic particles is preferably in a range of greater than or equal to 60.0 volume % and less than or equal to 85.0 volume %.

Abstract: An hBN powder containing an aggregate of primary particles of hBN, the hBN powder having a ratio of an average longer diameter (L1) to an average thickness (d1) of the primary particles, [L1/d1], of 10 to 25, a tap density of 0.80 g/cm3 or more, and a BET specific surface area of less than 5.0 m2/g, in which a particle size distribution curve showing a frequency distribution based on volume of the hBN powder is a bimodal distribution curve having a first peak and a second peak in a range of a particle size of 500 ?m or less and having a peak height ratio of a second peak height (HB) to a first peak height (HA), [(HB)/(HA)], of 0.90 or less, a method for producing the same, and a resin composition and a resin sheet each comprising the hBN powder.