Abstract: A flow path washing method and apparatus for an auto sampler in which, when a cleaning fluid supplied to a flow path which is switched between a first flow path including a nozzle for aspirating a sample and a sample loop for holding the aspirated sample, and a second flow path including a washing tub for washing at least an outer wall of the nozzle, a control unit changes a flow velocity of the cleaning fluid supplied between measurement of a first measurement item and measurement of a second measurement item based on washing information showing washing patterns corresponding to measurement items of the sample, including at least one of first washing information showing a washing pattern corresponding to the first measurement item of the sample and second washing information showing a washing pattern corresponding to the second measurement item to be measured subsequent to the first measurement item.

Abstract: A linear motion drive device including a ball screw, a linear motion table driven by the ball screw to move linearly, and an abnormality detection device configured to detect a decrease in a preload applied to the ball screw. The abnormality detection device includes a vibration sensor configured to measure vibration during operation of the ball screw, a calculation processing unit configured to acquire a vibration value of a vibration signal in a specific frequency band among vibration signals measured by the vibration sensor, and an abnormality detection unit configured to determine that a decrease in the preload has occurred in the ball screw when the vibration value is less than a previously determined threshold with respect to a reference value, the reference value being a vibration value in an initial stage of the operation of the ball screw or during a normal operation of the ball screw.

Abstract: A vibration-damping electromagnetic actuator including: a tubular stator including at least one coil member having a coil and an outer yoke attached to the coil; a mover including a permanent magnet and at least one inner yoke superposed in an axial direction of the stator, the mover being inserted into the tubular stator as axially displaceable relative to the stator through energization to the coil; and an inner tubular part provided at the outer yoke being superposed on an inner peripheral face of the coil to have a magnetic gap, wherein the at least one inner yoke has a thick part at an outer peripheral part thereof, and a lightening part at an inner peripheral part thereof so that an axial dimension of the inner yoke is smaller in a formation part of the lightening part than in the thick part.

Abstract: A vibration-damping electromagnetic actuator including: a stator; a movable member displaceable relative to the stator, and being disposed within or about it; a coil member with a coil generating a magnetic field through energization, which is disposed at one of the stator and the movable member; an armature displaceable relative to the coil member by an effect of the magnetic field generated by the coil, which is disposed at the other one of the stator and the movable member; a tubular guide sleeve disposed between the stator and the movable member so that the movable member is slidable along the guide sleeve; and an elastic support body fixed to the guide sleeve being clamped by the stator at a portion of the elastic support body apart from the guide sleeve so that the guide sleeve is elastically supported by the stator.

Abstract: A vibration-damping electromagnetic actuator including: a tubular stator; a movable member displaceable relative to the stator in an axial direction, and being inserted in the stator; a housing including a tubular peripheral wall and being attached to the stator; a support rubber elastic body elastically connecting the movable member to the housing; and a coil member and an armature displaceable relative to the coil member disposed at one and the other of the stator and the movable member respectively. The stator is arranged in an inner periphery of the peripheral wall, and a gap is provided between the peripheral wall and the stator in an axis-perpendicular direction. The stator is attached to the housing in a state aligned with the movable member by means of displacement of the stator relative to the housing in the axis-perpendicular direction.

Abstract: A vibration-damping electromagnetic actuator including: a tubular stator including at least one coil member having a coil and an outer yoke attached to the coil; a mover including a permanent magnet and at least one inner yoke superposed in an axial direction of the stator, the mover being inserted into the tubular stator as axially displaceable relative to the stator through energization to the coil; and an inner tubular part provided at the outer yoke being superposed on an inner peripheral face of the coil to have a magnetic gap, wherein the at least one inner yoke has a thick part at an outer peripheral part thereof, and a lightening part at an inner peripheral part thereof so that an axial dimension of the inner yoke is smaller in a formation part of the lightening part than in the thick part.

Abstract: A vibration-damping electromagnetic actuator including: a tubular stator; a movable member displaceable relative to the stator in an axial direction, and being inserted in the stator; a housing including a tubular peripheral wall and being attached to the stator; a support rubber elastic body elastically connecting the movable member to the housing; and a coil member and an armature displaceable relative to the coil member disposed at one and the other of the stator and the movable member respectively. The stator is arranged in an inner periphery of the peripheral wall, and a gap is provided between the peripheral wall and the stator in an axis-perpendicular direction. The stator is attached to the housing in a state aligned with the movable member by means of displacement of the stator relative to the housing in the axis-perpendicular direction.

Abstract: A vibration-damping electromagnetic actuator including: a stator; a movable member displaceable relative to the stator, and being disposed within or about it; a coil member with a coil generating a magnetic field through energization, which is disposed at one of the stator and the movable member; an armature displaceable relative to the coil member by an effect of the magnetic field generated by the coil, which is disposed at the other one of the stator and the movable member; a tubular guide sleeve disposed between the stator and the movable member so that the movable member is slidable along the guide sleeve; and an elastic support body fixed to the guide sleeve being clamped by the stator at a portion of the elastic support body apart from the guide sleeve so that the guide sleeve is elastically supported by the stator.