Voice coil linear activated park brake

摘要

A park brake systems and methods are disclosed. According to various embodiments, park brake systems comprising a tapered motor shaft having a first diameter and a second diameter, the second diameter being greater than the first diameter, a voice coil disposed at least partially around a circumference of a bobbin, a first one-way clutch housed at least partially within the bobbin, the first one-way clutch disposed coaxial to the tapered motor shaft, and an annular magnet disposed coaxial to the tapered motor shaft and proximal to the first one-way clutch, wherein, in response to a first voltage applied to the voice coil, the first one-way clutch translates axially in a first direction with respect to the tapered motor shaft and engages with the second diameter are disclosed.

主权项

1. A park brake system comprising:
a tapered motor shaft having a first diameter and a second diameter, the second diameter being greater than the first diameter; a spring disposed at least partially around a circumference of the tapered motor shaft; a voice coil disposed at least partially around a circumference of a bobbin comprising a ferromagnetic insert; a first one-way clutch housed at least partially within the bobbin, the first one-way clutch disposed coaxial to the tapered motor shaft; and an annular magnet disposed coaxial to the tapered motor shaft and proximal to the first one-way clutch; wherein, in response to a first voltage applied to the voice coil, the first one-way clutch translates axially in a first direction with respect to the tapered motor shaft and engages with the second diameter, and wherein, in response to a second voltage applied to the voice coil, the first one-way clutch translates axially in a second direction and is disposed about the first diameter.