Power switching device for vehicle

摘要

A power switching device for vehicle has at least first and second power switching mechanisms, a shared operating mechanism, and a housing accommodating the power switching mechanisms and the shard operating mechanism, the housing being integrally formed with a boss portion having a waiting mechanism, wherein the waiting mechanism includes drive and driven cylindrical shafts, and a coil spring connecting between the cylindrical shafts, both of the cylindrical shafts and the coil spring are arranged in a same axis, and are supported on an inner peripheral surface of the boss portion through drive and driven side needle roller bearings respectively, the coil spring is arranged inside the cylindrical shafts.

主权项

1. A power switching device for vehicle, the switching device comprising:
at least first and second power switching mechanisms arranged on the way of a driving force transmission passage from a driving source to wheels; a shared operating mechanism to switch both of the first and second power switching mechanisms on and off; the shared operating mechanism having a waiting mechanism; and a housing accommodating the first and second power switching mechanisms and the shard operating mechanism, the housing being integrally formed with a boss portion having the waiting mechanism built-in, wherein: the waiting mechanism includes a drive cylindrical shaft located in an operation side, a driven cylindrical shaft located in an actuation side, and a coil spring connecting the driven cylindrical shaft with the drive cylindrical shaft so as to transmit an operating power, both of the drive and driven cylindrical shafts and the coil spring are arranged in a same cylindrical shaft axis, the drive cylindrical shaft is supported on an inner peripheral surface of the boss portion through a drive side needle roller bearing, and the driven cylindrical shaft is supported on the inner peripheral surface of the boss portion through a driven side needle roller bearing, and the coil spring is arranged inside the drive cylindrical shaft and the driven cylindrical shaft.