Sliding rotor motor

DETAILED DESCRIPTION 1.
Purposes of the Invention It is an object of the present invention to improve a displacement type armature motor such that the known iron ring can be permanently and reliably attached to the rotor at low expenditure.
It is another object of the present invention to provide a method for easy assembly and attachment of an iron ring to a rotor in a displacement type armature motor.
These and other objects and advantages of the present invention will become evident from the description which follows.
2.
Brief Description of the Invention According to the present invention, there is provided for an axial displacement type armature motor comprising stator coil disposed at the casing.
A conical rotor is axially shiftable versus the casing with the stator coil.
An iron ring is carried by the rotor at the large cone side of the conical rotor.
A brake support casing is disposed at the large cone side.
Spring support means for supporting the iron ring, using an elasticity exhibited by the ring, are disposed on the brake support casing such that the diameter of the spring support means is slightly larger than the inner diameter of the iron ring.
The spring support means for supporting the iron ring can be furnished by at least three support ribs of the brake support casing.
The support ribs can be furnished with tips disposed on a circular arc.
This circular arc can be slightly larger than the inner diameter of the iron ring.
The stator coil can be furnished with a conical bore.
The iron ring can be furnished with an outer side chamfer adapted to the conical bore of the stator coil.
The iron ring can protrude with at least one locally folded back and overturned sheet metal into a setoff of the brake support casing.
The setoff can be furnished by the end of the support rib.
At least three cams can be formed at the brake support casing.
The iron ring on the end disposed opposite to the chamfer can rest with its ring face at least at three cams of the brake support casing.
The wall thickness of the iron ring can amount from about 3 to 5% of the diameter of the ring and the length of the iron ring, measured in a direction of an axis of the iron ring, can correspond to about 1/3 of the diameter of the iron ring