Entity

Time filter

Source Type

Japan

A linear encoder device (


Patent
Thk Co. | Date: 2014-05-12

Provided is a double-row roller bearing, which is capable of suppressing a frictional force from being increased due to variation in force of press contact between outer and inner rings and rollers to enable smoother relative rotational movement between the outer ring and the inner ring, and is also suitable for downsizing and higher in versatility. The double-row roller bearing includes: the inner ring; the outer ring; and the plurality of rollers arranged between the inner ring and the outer ring. On an inner peripheral surface of the outer ring, a pair of lateral protruding portions continuous along a circumferential direction are formed at an interval in a direction of a rotation axis. On an outer peripheral surface of the inner ring, an intermediate protruding portion continuous along the circumferential direction is formed so as to be positioned between the lateral protruding portions. The pair of lateral protruding portions and the intermediate protruding portion define a pair of roller rolling passages between the outer ring and the inner ring. In each of the pair of roller rolling passages, rollers each having a turning axis perpendicular to the rotation axis of the outer ring and the inner ring, and rollers (


Patent
Thk Co. | Date: 2014-02-18

A linear and rotary actuator system includes a shaft member moving linearly in an axial direction and rotating around an axis line, a hollow rotor surrounding the shaft member, a stator of a rotary motor having a space for holding the rotor and which rotates the rotor around the axis line, linear bearings, that rotates together with the rotor to transmit rotation of the rotor of the rotary motor to the shaft member and accepts linear movement of the shaft member, an angle measuring unit for measuring a rotation angle of the rotor, and a rotary motor driver for controlling the rotary motor in such a manner that the rotation angle of the rotor of the rotary motor measured by the angle measuring unit conforms to a command value. The rotation angle of the shaft member is controlled by controlling the rotation angle of the rotor of the rotary motor.


Patent
Thk Co. | Date: 2014-06-04

A control device is a control device (


Provided is a sound reduction or vibration damping apparatus that has a new sound control principle where the sound control principle is totally different from a known passive or active sound control apparatus. A sound reduction or vibration damping apparatus

Discover hidden collaborations