Abstract: This vibration actuator comprises a fixed body including a coil, a movable body including a magnet, and an elastic support part that supports the movable body so as to be freely moveable with respect to the fixed body. The elastic support part has an outer circumferential part fixed to the fixed body, an inner circumferential part disposed inside in the radial direction of the outer circumferential part and fixed to the movable body, and a deforming arm part disposed between the outer circumferential part and the inner circumferential part and coupling the outer circumferential part and the inner circumferential part, the deforming arm part being elastically deformable. An attenuation part is provided across the outer circumferential part and a portion of the deforming arm part on an outer circumferential part side thereof, the attenuation part attenuating vibrations in the elastic support part when the movable body moves.

Abstract: A stator structure of an embodiment includes a stator core that comprises: a ring-shaped main body; and a plurality of teeth extending in a radial direction of the main body and arranged along a circumferential direction of the main body. The main body comprises a plurality of elongated holes that are formed in an arc shape along the circumferential direction of the main body and that are arranged along the circumferential direction of the main body, and a plurality of holes that are arranged along the circumferential direction of the main body between the teeth and the elongated holes in the radial direction of the main body. At least one of the holes is disposed between beams and the teeth located close to the beams, the beams being provided between the adjacent elongated holes.

Abstract: A rotating device includes a motor, a gear, and a housing configured to accommodate the motor and the gear. The housing includes a first housing, a second housing, and a joining element for joining the first housing and the second housing. The first housing includes a first attaching part attached to an external device. The second housing includes a second attaching part attached to the external device. The first attaching part and the second attaching part include surfaces opposing each other after the housing is assembled. The first attaching part and the second attaching part include the joining element.

Abstract: A PWM signal generator of a motor controller 100-1 divides, upon occurrence of a condition in which one among a count incrementing period and a count decrementing period for a carrier is greater than or equal to a threshold, in conjunction with a condition in which the other among the count incrementing period and the count decrementing period is less than the threshold, an on time period of any one among a first PWM signal, a second PWM signal, and the third PWM signal into given on time periods and to add a given divided on time period to an energizing time period that is less than the threshold.

Abstract: Provided is an actuator, the actuator comprising: an actuator body and a control device that includes a circuitry configured to supply a main driving current pulse and a sub-driving current pulse to the coil, both of which are driving current pulses for driving the operation device in one direction in a vibrating direction thereof, in accordance with a touch operation of an operation device supported so as to be elastically vibrated, the main driving current pulse being capable of starting an elastic vibration, the sub-driving current pulse being capable of adjusting attenuation period of the elastic vibration after the starting the elastic vibration, and polarities of the main driving current pulse and the sub-driving current pulse being all identical.

Abstract: There is provided a bearing device including: a tubular sleeve; a shaft held inside the sleeve; and a first bearing, a second bearing, a third bearing, and a fourth bearing, rotatably holding the shaft with respect to the sleeve and arranged in this order in an axial direction. An outer circumferential surface of an outer ring of each of the first to fourth bearings is fixed to an inner circumferential surface of the sleeve, a gap is provided between inner circumferential surfaces of inner rings of the second and third bearings and the shaft, and a spring applying a constant pre-load is provided between the inner rings of the second and third bearings.

Abstract: A strain gauge includes a flexible substrate, a resistor formed of material containing at least one from among chromium and nickel, on or above the substrate, and a pair of electrodes electrically connected to the resistor. Each electrode includes a plurality of first patterns that are juxtaposed at predetermined intervals and that are electrically connected to each other. A plurality of second patterns of which longitudinal directions are toward a same direction as a longitudinal direction of each of the first patterns are disposed between opposing electrodes.

Abstract: A load transducer includes a block body and a strain gauge attached to the block body. The block body includes a plurality of fixing portions fixed to a support member, a plurality of movable portions provided respectively between the plurality of fixing portions and receiving a load from an external member, and a plurality of beam portions extending respectively between the fixing portions and the movable portions, the block body being formed in a tubular shape. The movable portions include a plurality of movable-portion protrusions receiving the load from the external member, and the fixing portions include a plurality of movable-portion regulation protrusions provided between the plurality of movable-portion protrusions to regulate displacement of the movable portions.

Abstract: A tactile sensor includes a support member with a curved surface, a sensor body disposed on the support member, and a buffer member with which the sensor body is coated, the buffer member being configured to, in response to contacting an object, transfer a force applied from the object to the sensor body. The sensor body includes an insulating layer, multiple first resistive portions of which a longitudinal direction is directed to a first direction of each and that are juxtaposed on one side of the insulating layer, multiple second resistive portions of which a longitudinal direction of each is directed to a second direction intersecting with the first direction and that are juxtaposed on another side of the insulating layer, and a pair of electrodes provided at both end portions of each of the first resistive portions and the second resistive portions.

Abstract: The disclosure relates to a head bearing assembly for a dental or surgical handpiece, comprising an outer sleeve, in which at least four radial bearings are arranged, which enclose an axis of rotation and each have their own bearing outer ring or a common bearing outer rings, wherein the bearing outer rings are surrounded radially on the outside by the outer sleeve in the circumferential direction about the axis of rotation, and each radial bearing has at least one or exactly one rolling element row with rolling elements which are arranged one behind the other in the circumferential direction and rolling in the respective bearing outer ring. The head bearing assembly according to the disclosure is characterized in that the at least four radial bearings have a common, integral bearing inner ring on which the rolling elements are arranged in rolling contact.

Abstract: The present strain gauge includes a substrate having flexibility; and a resistor formed from a material containing at least one of chromium and nickel, on the substrate, wherein a first substance having a function of preventing crystal grains as the main component of the resistor from cohering, is added to the resistor.

Abstract: The disclosure relates to an assembly comprising a component rotatable about a rotary axis for an actuating drive comprising a sensor element attached to the rotatable component. The rotatable component has a support surface from which a fixing element protrudes in parallel to the rotary axis. The sensor element includes an opening. The sensor element is arranged on the support surface in such a manner that the fixing element penetrates the opening. A surface of the sensor element adjacent to the opening has a structure. A top portion of the fixing element is in interlocking engagement with the structure so that the attached sensor element is connected to the component in a torque-resistant manner.

Abstract: A device is provided for preventing a parachute from being damaged. A parachute device (4) includes a flying body (43) including a parachute (400), a parachute accommodation section (40) configured to accommodate the parachute, at least one flying body (43) connected to the parachute, an ejection section (41) having a tube shape and configured to hold the flying body and to eject the held flying body, a gas generating device (60) configured to generate gas, and an extrusion member (42) capable of being at least partially inserted into the ejection section, the extrusion member being configured to extrude the flying body from the ejection section due to receiving pressure of the gas generated from the gas generating device.

Abstract: A motor drive control device includes: a feedback control unit calculating an operation amount (Sad) of a motor such that a rotation speed S3 of the motor matches a target rotation speed S1; a drive control signal generation unit generating a drive control signal Sd based on the operation amount Sad; a current fluctuation detection unit detecting a fluctuation of a current flowing through the motor; a correction instruction unit instructing correction of the operation amount Sad when the fluctuation of the current flowing through the motor is detected by the current fluctuation detection unit; and a correction unit correcting the operation amount Sad and providing the corrected operation amount S2 to the drive control signal generation unit when the correction of the operation amount Sad is instructed from the correction instruction unit.

Abstract: An accelerator is an automobile accelerator. The accelerator includes a sensor configured to detect a force to press the accelerator. The sensor includes a flexible substrate and a resistor formed of a film containing Cr, CrN, and Cr2N, on or above the substrate. The sensor is configured to detect the force to press the accelerator as a change in a resistance value of the resistor.

Abstract: A motor includes a rotor, a stator, a first substrate, a second substrate, and an electronic component arranged at the second substrate. The stator includes a stator core, an insulator, and a coil wound around the stator core via the insulator. The insulator includes a coupling part connected to an external device. The first substrate is fixed to the insulator. The second substrate is fixed to the first substrate. The first substrate and the second substrate are spaced apart in a rotation axis direction of the rotor.

Abstract: A planar illumination device of an embodiment includes a substrate, a first linear Fresnel lens, and a second linear Fresnel lens. The substrate includes a plurality of light sources disposed two-dimensionally in a grid pattern. The first linear Fresnel lens is disposed at an emission side of the plurality of light sources and formed with a groove constituting a concave-convex surface of the lens and extending in one direction. The second linear Fresnel lens is disposed at an emission side of the first linear Fresnel lens and formed with a groove constituting the concave-convex surface of the lens and extending in a direction orthogonal to the one direction.

Abstract: An inner-rotor motor including: an armature assembly including a rotating shaft, an armature unit coupled to the rotating shaft and a pressing unit; a frame assembly including a frame housing the armature unit, a first bearing unit located on one side with respect to the armature unit in an axial direction, and a second bearing unit located on another side with respect to the armature unit in the axial direction; and an urging structure that urges the rotating shaft in a direction away from the second bearing unit and that presses the pressing unit toward the first bearing unit.

Abstract: A motor drive control device includes a control circuit configured to output a drive control signal for driving a motor, and a drive circuit configured to drive the motor with the drive control signal. The control circuit calculates a lead angle value ? allowing a d-axis current value Id of a two-phase rotating coordinate system to be zero with a q-axis current value Iq calculated from drive current values Iu, Iv, and Iw of a coil of the motor and rotation speed ? of a rotor of the motor. The control circuit performs a space vector conversion based on an angle ? obtained by adding the lead angle value ? and rotation angle ? and voltage command value Vref of the two-phase rotating coordinate system calculated to reduce a difference between the q-axis current value Iq and a q-axis current command value Iqref, to generate the drive control signal.

Abstract: To provide a rotary apparatus able to facilitate assembly of the rotary apparatus, and an attaching structure of the rotary apparatus. A rotary apparatus (1) includes a motor (10) having motor terminals (13), terminal members (21) and (22), a first housing (60), the terminal members (21) and (22) being attached to the first housing (60), and a second housing (40) having an accommodating part configured to accommodate the motor (10), the first housing (60) being attached to the second housing (40). The first housing (60) is attachable to or separable from the second housing (40) in a predetermined direction. The terminal members (21) and (22) are electrically connected to the motor terminals (13). The terminal members (21) and (22) have externally-connected terminal portions (33) and (34) to be connected to an external unit. The predetermined direction is a longitudinal direction of the externally-connected terminal portions (33) and (34).