Electric power connection structure of a direct current motor

Details Electric power connection structure of a direct current motor Electric power connection structure of a direct current motor

2001-12-20

2003-08-19

Le, Dang (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S089000

Reexamination Certificate

active

06608412

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electric power connection structure of a direct current motor, and more particularly to an electric power connection structure of a direct current motor, wherein the connection circuit of the electric power may be positioned conveniently, and cannot be torn out.
2. Description of the Related Art
A first conventional heatsink fan
90
having a direct current motor in accordance with the prior art shown in
FIG. 6
comprises a power cord
92
which is connected to a stator coil
91
, reeved through a frame
93
of a housing and a baffle
94
, and is then drawn out. Thus, the frame
93
and the baffle
94
may absorb the external pulling force to the power cord
92
outside of the frame
93
, thereby preventing the power cord
92
from being pulled to detach from the stator coil
91
.
A second conventional heatsink fan
80
in accordance with the prior art shown in
FIGS. 7 and 8
comprises a power cord
82
which is connected to a stator coil
81
, is pressed by a press rod
84
of a cover plate
83
, is reeved through the wall
85
of a housing, and is then drawn out. Thus, the press rod
84
and the wall
85
of the housing may absorb the external pulling force to the power cord
82
outside of the housing of the heatsink fan
80
, thereby preventing the power cord
82
from being pulled to detach from the stator coil
81
.
In the above-mentioned conventional heatsink fan which uses a direct current motor, the connection design of the power cord mainly uses tiny cords that are protruded outward from the frame to connect the electric power. Thus, the frame
93
and the baffle
94
or the press rod
84
and the wall
85
of the housing may absorb the external pulling force on the power cord, thereby preventing the power cord from being pulled to detach from the stator coil. However, the conventional heatsink fan using a direct current motor has to prevent the power cord from being pulled to detach from the stator coil, so that the fabrication of the conventional heatsink fan is inconvenient. In addition, the electric cords are protruded outward from the frame to connect the electric power, thereby decreasing the aesthetic quality of the conventional heatsink fan.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide an electric power connection structure of a direct current motor, wherein the electric power connection structure may be processed and manufactured conveniently, and the connection circuit of the electric power may be positioned conveniently, and cannot be torn out.
In accordance with the present invention, there is provided an electric power connection structure of a direct current motor, wherein the outer wall of the motor housing is provided with a power plate which is provided with connection terminals and connection circuits. The connection circuit has a first end formed with a connection terminal that may be connected to an electric power for driving the motor to rotate, and a second end electrically connected to an drive circuit that may control the motor to start and rotate.


REFERENCES:
patent: 4398135 (1983-08-01), Busch et al.
patent: 4727274 (1988-02-01), Adam et al.
patent: 4853568 (1989-08-01), Fujiwara
patent: 5334897 (1994-08-01), Ineson et al.
patent: 5945766 (1999-08-01), Kim et al.
patent: 6268669 (2001-07-01), Wakao et al.

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