Abstract: Provided is a motor-driven valve with a simple configuration that is capable of suppressing flow rate loss of fluid and reducing noise caused by the flow of the fluid in the first flowing direction and the second flowing direction, without greatly changing a conventional motor-driving valve. A porous body is fixed to a valve seat member, the porous body being extended at least to be lateral to a valve port and having a cutout part corresponding to a first opening provided at a lateral part of a valve body.

Abstract: Provided is a motor-driven valve with a simple configuration that is capable of suppressing flow rate loss of fluid and reducing noise caused by the flow of the fluid in the first flowing direction and the second flowing direction, without greatly changing a conventional motor-driving valve. A porous body is fixed to a valve seat member, the porous body being extended at least to be lateral to a valve port and having a cutout part corresponding to a first opening provided at a lateral part of a valve body.

Abstract: In a bent axis type axial piston motor, so as to smoothly rotate a drive shaft without lowering motor efficiency and brake the drive shaft if necessary, when the drive shaft is rotated through a cylinder block by causing piston rods to reciprocate, relative rotation between separate plates and friction plates is allowed by removing a pressing force applied by a braking piston, and when the separate plates and the friction plates are pushed to a brake force receiving plate by the braking piston, relative rotation between the separate plates and the friction plates is restrained and thus the drive shaft is braked. Restriction members are disposed between a casing and the brake force receiving plate so as to restrain the brake force receiving plate from moving relative to the casing along the axis of the drive shaft.

Abstract: In a bent axis type axial piston motor, so as to smoothly rotate a drive shaft without lowering motor efficiency and brake the drive shaft if necessary, when the drive shaft is rotated through a cylinder block by causing piston rods to reciprocate, relative rotation between separate plates and friction plates is allowed by removing a pressing force applied by a braking piston, and when the separate plates and the friction plates are pushed to a brake force receiving plate by the braking piston, relative rotation between the separate plates and the friction plates is restrained and thus the drive shaft is braked. Restriction members are disposed between a casing and the brake force receiving plate so as to restrain the brake force receiving plate from moving relative to the casing along the axis of the drive shaft.

Abstract: There are provided an infrared light emitting diode 42 operable to emit light in a predetermined cycle; a phototransistor 44 operable to receive light which is emitted by the infrared light emitting diode 42 and reflected from a retroreflective sheet 40 of the operation article 3, and output a light reception signal “Sp”; and a highpass filter unit 116 operable to pass a high frequency component of the light reception signal “Sp”, output the high frequency component as a light reception signal “Ss” and operable to generate a reference voltage. The highpass filter unit 116 supplies the reference voltage to a node to which the light reception signal “Ss” is output, and the processor 110 counts the number of pulses included in the light reception signal “Ss”, and calculates the speed of the operation article 3.

Abstract: There are provided an infrared light emitting diode 42 operable to emit light in a predetermined cycle; a phototransistor 44 operable to receive light which is emitted by the infrared light emitting diode 42 and reflected from a retroreflective sheet 40 of the operation article 3, and output a light reception signal “Sp”; and a highpass filter unit 116 operable to pass a high frequency component of the light reception signal “Sp”, output the high frequency component as a light reception signal “Ss” and operable to generate a reference voltage. The highpass filter unit 116 supplies the reference voltage to a node to which the light reception signal “Ss” is output, and the processor 110 counts the number of pulses included in the light reception signal “Ss”, and calculates the speed of the operation article 3.