Motor mounting assembly

Details Motor mounting assembly Motor mounting assembly

2000-12-27

2003-04-15

Chan, Korie (Department: 3632)

Supports

Machinery support

Modified machine housing or frame

C310S049540, C310S089000, C310S091000, C310S326000

Reexamination Certificate

active

06547208

ABSTRACT:

TECHNICAL FIELD
The present invention relates to the mounting of machinery. More particularly, the present invention relates to a method and apparatus for mounting a motor to a mechanical system.
BACKGROUND
Electrical motors are used to provide power to mechanical systems. For example, electrical motors may be used in power steering systems for assisting a driver to steer an automobile. Referring to Prior Art
FIG. 1
, a typical mounting assembly for mounting a motor to a mechanical system is shown generally at
10
.
When a motor
12
is mounted to a housing
14
of a mechanical system (not shown), a motor flange
16
on the motor
12
is typically attached by bolts
18
to a housing flange
20
, which is formed on housing
14
. The motor
12
is isolated from vibration generated in the housing
14
, usually by mounting grommets or shock mounts
22
in between the motor flange
16
and the housing flange
20
.
Where the motor
12
is to operate in harsh environments, the motor
12
and the mechanical system should be protected from the environment. To help prevent contaminants from entering the motor
12
or the mechanical system, a motor cover
24
, or “can”, is placed over the motor
12
and is attached by bolts
26
to the motor flange
16
. In addition, an elastomeric seal
28
is positioned around an outside diameter of the motor flange
16
for interfacing with an inside diameter of the motor cover
24
. The elastomeric seal
28
prevents contaminants from entering the space between the motor flange
16
and the motor cover
24
.
The use of bolts
18
and mounting grommets
22
for mounting the motor
12
to housing
14
adds to the cost required for manufacturing the assembly
10
. For example, the use of bolts
18
requires that the motor flange
16
and the housing flange
20
are large enough to accept the bolts
18
and to allow sufficient space for a technician to insert and tighten the bolts
18
. Increasing the size of the flanges
16
and
20
to accommodate the bolts
18
or to make the bolts
18
accessible increases the material cost for the assembly
10
and the space required for the assembly
10
. In addition, the housing flange
20
must either be threaded (as shown) or a nut must be applied to the bolts
18
, both of which require an additional step in the manufacture of assembly
10
. In sum, the use of bolts
18
and mounting grommets
22
for mounting the motor
12
to the housing
14
of a mechanical system results in additional time and material costs.
SUMMARY
In an exemplary embodiment, a motor mounting assembly for mounting a motor to a housing includes a housing flange disposed on the housing, with the housing flange having a first recess formed therein. A motor flange is disposed on the motor, and the motor flange is secured to the housing flange. A cover surrounds the motor and the motor flange, and the cover is crimped into the first recess for securing the cover to the housing flange.


REFERENCES:
patent: 2748302 (1956-05-01), Boeckel
patent: 3348082 (1967-10-01), Martin
patent: 3535564 (1970-10-01), Anastasio et al.
patent: 4768931 (1988-09-01), Iwai et al.
patent: 4853576 (1989-08-01), Mayumi et al.
patent: 4927608 (1990-05-01), Worner et al.
patent: 5134330 (1992-07-01), Haas et al.
patent: 5237231 (1993-08-01), Blaettner et al.
patent: 6124656 (2000-09-01), Jensen
patent: 6241055 (2001-06-01), Daudi
patent: WO 00/50274 (2000-08-01), None

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