Retaining ring for a rotor

Details Retaining ring for a rotor Retaining ring for a rotor

2002-12-04

2004-05-25

Wlison, Neill (Department: 3679)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Headed fastener element with nut, washer, securing means or cap

Lap bolt or fastener

C411S526000, C310S0400MM

Reexamination Certificate

active

06739814

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is related to a retaining ring for a rotor and more particularly to the retaining ring having a slightly narrow inner circumference adapted to engage with an outer circumference of a shaft.
2. Description of the Related Art
Referring to
FIG. 1
, a conventional motor includes a rotor
90
, a shaft
91
, a stator
92
and a bearing hole
93
. The shaft
91
is extended beyond the bearing hole
93
, so that an end of the shaft
91
is projected from the stator
92
. The end of the shaft
91
is provided with an annular groove
94
adapted to engage with a C clip
95
so as to confine the shaft
91
within an axial space defined by the bearing hole
93
. Consequently, the rotor
90
and the stator
92
cannot be disassembled.
However, a manufacturing process for cutting an annular groove
94
is complicated if a diameter of the shaft
91
is thin. Also an assembling process may be sophisticated if a diameter of the shaft
91
is ultimately thin.
The present invention intends to provide a retaining ring for a rotor simplifying both of a manufacturing process and an assembling process in such a way to mitigate and overcome the above problem.
SUMMARY OF THE INVENTION
The primary objective of this invention is to provide a retaining ring having a slightly narrow inner circumference adapted to simplify both of a manufacturing process and an assembling process.
The secondary objective of this invention is to provide the retaining ring having a slightly narrow inner circumference for attenuating the abrasion.
The retaining ring in accordance with the present invention mainly includes an outer circumference and an inner circumference. The inner circumference has a slightly narrow diameter adapted to fittingly engage with an outer circumference of a shaft.


REFERENCES:
patent: 1862275 (1932-06-01), Menut
patent: 3893221 (1975-07-01), Lehmann
patent: 5195860 (1993-03-01), Steyn
patent: 5833422 (1998-11-01), Haga et al.

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