Single magnetic conductive plate structure for forming a...

Details Single magnetic conductive plate structure for forming a... Single magnetic conductive plate structure for forming a...

2003-03-07

2004-09-07

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156320, C310S254100, C310S266000, C310SDIG006

Reexamination Certificate

active

06787965

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is relates to a single magnetic conductive plate structure for forming a single pole plate brushless dc motor and more particularly to a single magnetic conductive plate being punched to form a pole plate, pole faces, an axial hole and a base to reduce the number of stator members.
2. Description of the Related Art
Referring to
FIG. 1
, an axial winding stator generally comprises an upper pole plate set
10
a
, a lower pole plate set
10
b
, a coil
20
, a stator seat
21
, and an axial tube
22
. The pole plate sets
10
a
and
10
b
are attached to either side of the stator seat
21
and consist of pole plates
11
a
and
11
b
, and pole faces
12
a
and
12
b
. In an assembly operation, the coil
20
is wound around the stator seat
21
and the axial tube
22
is extended successively through an axial hole
13
a
of the upper pole plate set
10
a
, a center hole
23
of the stator seat
21
and an axial hole
13
b
of the lower pole plate set
10
b
to form a motor stator. Consequently, the stacked combination of the stator members must increase their axial thickness. However, the total thickness of the conventional motor cannot be effectively reduced and it is undesired for an electronic device with a specific thin thickness, a notebook computer for example.
The present invention intends to provide a single magnetic conductive plate punched to form a pole plate, pole faces, an axial hole, and a base such that the number of stator members is reduced. The base is adapted to support a coil and a substrate to reduce a total thickness of a stator and manufacture costs in such way as to mitigate and overcome the above problem.
SUMMARY OF THE INVENTION
The primary objective of this invention is to provide a single magnetic conductive plate for forming a single pole plate brushless dc motor, which is punched to form a pole plate, pole faces, an axial hole and a base so as to reduce the count of the stator members and an axial thickness thereof.
The secondary objective of this invention is to provide the single magnetic conductive plate for forming the single pole plate brushless dc motor, which is regarded as a base for supporting a coil and a substrate so as to simplify the entire structure of the stator and reduce manufacture cost.
The single magnetic conductive plate for forming the single pole plate brushless dc motor of the present invention mainly comprises a pole plate, a plurality of pole faces, and an axial hole. The pole plate, the pole faces and an axial hole are integrated into the single magnetic conductive plate. The pole plate is regarded as a base and adapted to combine with a coil to form a stator. The pole faces are punched and equi-spaced round the axial hole proximal the coil. The axial hole is adapted to combine with a mounting seat for supporting a rotor.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description and the accompanying drawings.


REFERENCES:
patent: 2323035 (1943-06-01), Hansen et al.
patent: 3504253 (1970-03-01), Kavanaugh
patent: 3558940 (1971-01-01), Chestnut et al.
patent: 4059780 (1977-11-01), Mazuir
patent: 5831359 (1998-11-01), Jeske
patent: 5847485 (1998-12-01), Suzuki et al.
patent: 5854526 (1998-12-01), Sakamoto
patent: 6509666 (2003-01-01), Huang et al.
patent: 58-127549 (1983-07-01), None

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