Electrical generator or motor structure – Dynamoelectric – Linear
Reexamination Certificate
2001-11-09
2004-11-16
Lam, Thanh (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Linear
C310S013000, C310S015000
Reexamination Certificate
active
06819015
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a stator fastening structure of a reciprocating motor, and more particularly, to a stator fastening structure of a reciprocating motor, which is capable of preventing the leakage of the flux formed in a stator of a reciprocating motor and of reducing the manufacturing cost of a frame, in which the stator is loaded.
2. Description of the Background Art
In general, a reciprocating motor is formed by making the flux of a common three-dimensional motor plane. A plane moving part linearly moves on a plane according to a change in the flux formed on a plane fixed part. The reciprocating motor according to the present invention can be in a linear reciprocating motion by attaching a plurality of plane magnets to the cylindrical circumference of a moving magnet by applying the above principle.
FIGS. 1 and 2
respectively show an example of the reciprocating motor. As shown in
FIGS. 1 and 2
, the reciprocating motor includes a stator S consisting of a cylindrical outer core
10
and a cylindrical inner core
20
, which is inserted into the outer core
10
to be separated from the outer core
10
by a predetermined distance, a winding coil
30
combined with the outer core
10
or the inner core
20
inside the outer core
10
or the inner core
20
, and a moving magnet
40
, which includes permanent magnets
41
and is inserted between the outer core
10
and the inner core
20
to be movable. In
FIGS. 1 and 2
, the winding coil is combined with the outer core.
The outer core
10
is a cylindrical stacked substance formed by radially stacking lamination sheets
11
, which are predetermined shaped thin plates.
When the winding coil
30
is combined with the outer core
10
, a cylindrical bobbin
50
, around which coil is wound in multiple layers, is used as the winding coil
30
in order to secure electrical insulation and the convenience of fabrication.
The inner core
20
is a stacked substance formed by radially stacking a plurality of lamination sheets
21
formed of predetermined shaped thin plates to be cylindrical.
The moving magnet
40
is formed by combining the plurality of permanent magnets
41
with a cylindrical permanent magnet holder
42
such that the permanent magnets
41
are separated from each other by the same distance.
In the above-mentioned reciprocating motor, when current flows through the winding coil
30
, flux is formed around the winding coil
30
due to the current that flows through the winding coil
30
. The flux forms a closed loop along the outer core
10
and the inner core
20
that form the stator S.
Because the permanent magnets
41
receive force in an axial direction due to the mutual action between the flux formed in the outer core
10
and the inner core
20
and the flux formed by the permanent magnets
41
, the moving magnet
40
is in a linear motion in the axial direction between the outer core
10
and the inner core
20
. When the direction of the current applied to the winding coil
30
is alternately changed, the moving magnet
40
is in a linear reciprocating motion.
When the reciprocating motor is loaded in a system and the output of the reciprocating motor is used as a driving source, the reciprocating motor is loaded in a frame that forms the system.
FIG. 3
shows an example of a conventional structure, in which the reciprocating motor is combined with the frame.
As shown in
FIG. 3
, the frame
60
includes an outer core-loading portion
61
having a predetermined shaped area and a cylindrical inner core-loading portion
62
formed in the middle of the outer core-loading portion
61
to have a predetermined height.
The outer core
10
that forms the stator S is loaded in the outer core-loading portion
61
of the frame
60
. The inner core
20
is inserted into the outer core
10
to be separated from the outer core
10
by a predetermined distance and is inserted into and fixed to the inner core-loading portion
62
. The stator S is inserted between the outer core
10
and the inner core
20
.
Because the outer core
10
and the inner core
20
of the stator loaded in the frame
60
are separated from each other. The frame
60
must be formed of a non-magnetic material in order to prevent the leakage of the flux formed using the outer core
10
and the inner core
20
that form the stator S as paths.
The frame
60
is commonly formed of stainless steel or aluminum, which is the non-magnetic material. When the frame
60
is formed of stainless steel, the material cost is expensive. When the frame
60
is formed of aluminum, the frame
60
is manufactured by aluminum die-casting. In this case, the processing expenses are high.
SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to provide a stator fastening structure of a reciprocating motor, which is capable of preventing the leakage of the flux formed in a stator of a reciprocating motor and of reducing the manufacturing cost of a frame, in which the stator is loaded.
To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a stator fastening structure of a reciprocating motor, in which a frame which includes an outer core fixing member, to which an outer core is fixed, and an inner core fixing member, to which an inner core is fixed, wherein the outer core fixing member of the frame and the inner core fixing member of the frame are formed of different material from each other.
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 3536941 (1970-10-01), Tourtellotte
patent: 3896319 (1975-07-01), Chari
patent: 4220899 (1980-09-01), von der Heide
patent: 4454426 (1984-06-01), Benson
patent: 4675563 (1987-06-01), Goldowsky
patent: 4937481 (1990-06-01), Vitale
patent: 5434459 (1995-07-01), Pinkerton
patent: 6077054 (2000-06-01), Lee et al.
patent: 6127750 (2000-10-01), Dadd
patent: 6174141 (2001-01-01), Song et al.
patent: 2002/0113497 (2002-08-01), Park et al.
patent: 54098908 (1979-08-01), None
patent: 06-284670 (1994-10-01), None
patent: 10-080121 (1998-03-01), None
patent: 2001-116100 (2000-02-01), None
patent: 2000-236653 (2000-08-01), None
Hong Eon Pyo
Park Kyeong Bae
Birch & Stewart Kolasch & Birch, LLP
Lam Thanh
LG Electronics Inc.
Scheuermann David W.
LandOfFree
Stator fastening structure of reciprocating motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stator fastening structure of reciprocating motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stator fastening structure of reciprocating motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3336863