Jtekt Corporation

Koyo Seiko Company, Ltd.

Kenji Sakamoto

Masahiro Inoue

Katsura Koyagi

Hiroshi Ueno

Shinji Fukuda

Kiyoshi Tanimoto

Kazuo Iga

Nobuo Komeyama

Masaaki Ohtsuki

Syouji Eguchi

In a shaft coupling monitoring apparatus for monitoring a spider joint using outer peripheries of four shafts of a cross shaft as rolling contact surfaces, each of the shafts contains therein a sensor for detecting any damage on the rolling contact surface thereof. Even in a case where the spider joint is incorporated in a driving shaft such as of a rolling mill, the monitoring apparatus may provide high-accuracy and early detection of any damage such as flaking on the rolling contact surface defined on each of the shafts of the cross shaft.

Shaft Coupling Monitoring Apparatus

A bearing device mountable on a smaller bearing and allowing to be automatically lubricated for a long period, comprising an inner ring and an outer ring rotated relative to each other, cages and rolling elements held by the cages which are disposed in an annular space between the inner and outer rings, a seal ring disposed on both sides of the inner and outer rings, and a unit body formed of a battery, a tank for storing lubricant, and a pump sucking and discharging the lubricant from the tank which is disposed between the outer ring and the inner ring detachably from the seal ring, wherein the lubricant is discharged from the pump into the annular space in which the rolling elements are disposed and the discharged amount of the lubricant from the pump is controlled by a sensor and a control circuit, and the unit body is formed detachable, whereby a lubrication unit installed in the bearing can be made compact and slim.

Bearing device

A sensor-equipped hub unit comprises a hub unithaving a wheel-side raceway member, a body-side raceway member, and two rows of rolling bodies, and a sensor deviceprovided on the hub unit. The sensor devicehas a magnetostrictive sensorfor detecting a reverse magnetostrictive effect of the raceway memberproduced by a force exerted thereon by the rolling bodies. The sensor devicedetects rotation from the number of repetitions of a variation in strain and also detects the force acting on the wheel-side raceway memberfrom the amplitude of strain.

Rolling element bearing unit with sensor and hub unit with sensor

Sensor-equipped hub unitsattached to respective drive wheelseach have a sensor device comprising a sensorfor detecting the ground contact load on the wheel. A control unithas a traction controller, whereby when the ground contact load value output from one of the ground contact load sensorswhile the vehicle is traveling straight is outside a predetermined range, the drive wheelis controlled so as to return the ground contact load value to the original value.

Vehicle control system

A one-way clutch includes an outer race, wherein a plurality of windows are formed in one plate-like member, is placed so as to be relatively rotatable with respect to an inner race wherein two plate-like members overlay each other and a ball raceway surface is formed by curved portions formed in outer peripheries of the plate-like members. Balls are accommodated in the windows. The face of each of the windows on the side of the outer periphery of the outer race is formed as a cam surface wherein the distance with respect to the ball raceway surface is reduced in a circumferential direction. Urging means for urging the balls in the direction is disposed. The maximum width of the one-way clutch is equal to the ball diameter and the thicknesses of the two plate-like members constituting the inner race, so that a one-way clutch of a reduced width is obtained.

Growing community of inventors

Kashiba, Japan

Kenji Sakamoto