Nsk Corporation

Ryohei Yamauchi

Katsuyasu Ono

Mikio Yamaguchi

Daisaku Kawada

Haruyuki Ikesue

An electric driving device for a transmission can be reduced in size with a simple structure, and can be installed in a small-sized car, such as a passenger car. In this electric driving device, a shift shaft effects a selecting operation by its displacement in the axial direction and a shifting operation by its rotation. The displacement of the shift shaft in the axial direction is effected by rocking and displacing a rocking arm by means of a first actuator or . Rotation of the shift shaft is effected by pushing and/or pulling a rocking arm by means of a second actuator . This driving arm is fixedly disposed on the outer peripheral surface of a spline tube which is brought into spline-engagement with the shift shaft

Electric drive device for transmission

An object of the present invention is to provide a seat belt tightening device including a driving unit having excellent properties which assures that an intensity of webbing tightening power and a quantity of webbing tightening activity can easily be increased, and moreover, acceptable webbing tightening properties can be obtained with the seal belt tightening device. A driving unit 4 for a pretensioner disposed on one side wall of a retractor base 18 includes a pair of gas generators 8 and 9 which are arranged on the base end side of a cylinder 5. At the time of vehicle collision, a piston 6 slidably received in the cylinder 5 is driven by the explosion pressure derived from explosion of an explosive filled in both the gas generators 8 and 9, whereby a webbing winding shaft is rotated in such a direction that the loosened state of a seat belt can be eliminated.

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Gunma-ken, Japan

Ryohei Yamauchi