Patent ID: 8167104
Filing Date: 2012-05-01
Classification: F16D,F16H,Y10T

Abstract:
1. A gear shifting apparatus for the establishment of a positive locking connection between a gear and a shaft, comprising a shaft, a shift sleeve with at least one electromagnet, the shift sleeve being connected to the shaft, and at least one gear, where the at least one gear is supported in bearings, free to rotate relative to the shaft, where the shift sleeve is fixed against rotation on the shaft, and where the gear and the shift sleeve are configured in such a way that a positive locking connection can be established in a shifted condition of the gear shifting apparatus between the gear and the shift sleeve and that in a neutral condition of the gear shifting apparatus no positive locking connection is established between the gear and the shift sleeve, wherein one of the shift sleeve and the at least one electromagnet interacts with at least one synchronizing element with which a frictional locking connection between the at least one gear and the shift sleeve is established upon activation of the at least one electromagnet in order to bring the at least one gear to a rotational speed substantially equal to the rotational speed of the shift sleeve before establishing the positive locking connection, wherein the at least one synchronizing element is arranged so that it is moved in the longitudinal direction of the shaft relative to the gear, the synchronizing element being configured in the shape of one of a ring and a cylinder and being arranged in a recess of one of the gear and the electromagnet, the recess being in the shape of one of a ring and a cylinder.