Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2003-01-27
2004-05-18
Paumen, Gary (Department: 2833)
Electrical generator or motor structure
Dynamoelectric
Rotary
Reexamination Certificate
active
06737774
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a cooling fan motor for a condenser having a direct engagement type connector, and in particular to an improved cooling fan motor for a condenser having a direct engagement type connector which is capable of implementing an easier management of a lead line to which a power is applied for driving a motor by engaging a direct engagement type connector housing to an end cover having a bearing which is supported in such a manner that an end of an armature shaft of a cooling motor fan is rotated and minimizing a voltage drop in a lead line by decreasing the number of parts such as a cable, terminal, etc. for thereby enhancing a productivity of a motor based on the reduction of the number of parts.
2. Description of the Background Art
Generally, in order to cool a coolant which flows through a condenser by rotating a cooling fan, there is provided a motor which is capable of rotating a cooling fan.
FIG. 1
is a view illustrating a conventional condenser cooling fan motor for cooling a coolant which flows through a condenser, by rotating a cooling fan.
The conventional condenser cooling fan motor includes a housing
10
having a through hole
10
a
through which a shaft passes and a first receiving unit
10
b
which receives a first bearing
30
, an end cover
14
which is engaged opposite to the housing
10
through a flange
14
a
and includes a second receiving unit
14
b
for receiving a second bearing
32
therein, an armature shaft
20
which includes one end rotatably supported by the first bearing
30
in a state that the above one end is extended through a through hole
10
a
of the housing and the other end which is rotatably supported by the second bearing
32
, an armature
22
which is inserted onto an outer circumference of the armature shaft
20
, a rectifier
24
which is provided in the armature
22
and the end cover
14
, and a brush
26
which is adapted to supply a power applied from a battery to the armature
22
through the rectifier
24
in a state that the brush
26
is elastically pressurized by a spring
28
.
A mounting bracket
16
having an engaging hole
16
a
is attached to an outer side of the end cover
14
.
A magnet
12
is attached to an inner side of the housing
10
in a portion opposite to the armature
22
.
In the conventional condenser cooling fan motor, when a power which is applied to the rectifier
25
through the brush
26
is supplied to the armature
22
through a wire
38
, a certain rotational force occurs by a magnetic force of the magnet
12
for thereby rotating the armature shaft
20
. At this time, since a cooling fan is fixed to the fan engaging portion
20
a
formed in an end of the armature shaft
20
, the cooling fan is rotated at a high speed by a strong rotational force of the armature shaft
20
, so that the coolant which flows through the condenser is cooled.
When assembling the cooling fan motor, in a state that the end cover
14
is fixed to a jig, a second bearing
32
is inserted into the second receiving unit
14
b
, and then an end of the armature shaft
20
in which the rectifier
24
and the armature
22
are engaged is inserted into the second bearing
32
. The second bearing
32
is inserted into the other end of the same, and the housing
10
is engage using a jig for thereby completing an assembling operation.
At this time, since the armature shaft
20
is rotatably engaged using the first bearing
30
and the second bearing
32
, an air gap may be formed. In the assembling line, a certain washer
34
,
36
having the same size as the above air gap is inserted for thereby preventing any movement in the longitudinal direction of the armature shaft
20
.
An end of the cable
44
including the lead line
42
which is adapted to apply a power to the cooling fan motor is connected with the brush
26
formed in the interior of the same through the terminal of the end cover
14
from the outside of the motor, and the other end of the same is connected with the connector
40
which is engaged to a wire harness(not shown) capable of applying a power from the battery.
However, in the thusly constituted conventional condenser cooling fan motor, since the lead line which is externally extended is connected with the terminal connected with the brush based on a certain process from the fabrication step of the motor for supplying a power to the motor, the number of the processes is increased due to the fabrication process of the motor. Therefore, the assembling nature of the motor is decreased.
In addition, the management of the lead line connected to the brush through the terminal is complicated, and the other end of the lead line extended from the rear side of the motor is connected to the connector to which the wire harness is engaged for thereby causing much inconvenience. Since there is lead line between the connector and the motor, since the power inputted through the connector is decreased because the power must flow through the lead line.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a cooling fan motor for a condenser having a direct engagement type connector which overcomes the problems encountered in the conventional art.
It is another object of the present invention to provide a cooling fan motor for a condenser having a direct engagement type connector which is capable of implementing an easier management of a lead line to which a power is applied for driving a motor by engaging a direct engagement type connector housing to an end cover having a bearing which is supported in such a manner that an end of an armature shaft of a cooling motor fan is rotated and minimizing a voltage drop in a lead line by decreasing the number of parts such as a cable, terminal, etc. for thereby enhancing a productivity of a motor based on the reduction of the number of parts.
In order to achieve the above objects, in a cooling fan motor having a condenser which includes a housing having an inner wall attached with a magnet, an end cover engaged opposite to the housing, an armature shaft which includes an armature in an outer circumference of the same and an end portion which is rotatably supported in a first receiving unit of the housing, and the other end is rotatably supported in a second receiving unit of the end cover by a ball bearing, a rectifier which is installed between the armature and the end cover, and a brush which is adapted to supply a power from a battery to the armature through the rectifier in a state that the brush is elastically supported by a spring, there is provided a cooling fan motor for a condenser having a direct engagement type connector, in which a pair of engaging protrusions each having a plurality of pin engaging holes in an inner side of the same are protruded in one side and the other side of a back surface of the end cover; and a direct engagement type connector is engaged in an engaging protrusion of the end cover, and an engaging terminal is formed in an upper portion of the direct engagement type connector, and a connector leg is integrally formed in a lower portion of the engaging terminal, and a certain through hole is formed in the center portion of the same for thereby receiving a second receiving unit thereinto protruded from a back surface of a motor, and a pair of engaging members corresponding to the engaging protrusion of the end cover are formed in one side surface of the connector leg; and an end portion of each of a plurality of pins is protruded from an inner portion of the engaging terminal of the connector, and the pin is embedded in the connector leg, and the other end of each of the same is outwardly protruded through the engaging member, and when engaging the connector in the end cover, the pin contacts with the brush formed in the inner side of the motor through the engaging hole formed in an inner side of the engaging protrusion.
In the present invention, a pair of reinforcing portions are formed in one side and the other side of an outer circumfe
Coleman Henry
Harvey James R.
Kamco Co., Ltd.
Paumen Gary
Sapone William
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