KR101908555B1 - Method for assembling DC motor having good heat radiating function - Google Patents

Abstract

The present invention is characterized in that an inner space formed by fastening the front cover assembly fastened to the end cover assembly is formed and an armature composed of a rotary shaft and a rotor is inserted into an internal space formed by fastening the end cover assembly and the front cover assembly And more particularly, to a method of assembling a DC motor, including a first step of assembling the armature; 2) assembling the end cover assembly to the armature; And assembling the front cover assembly to the armature assembled in the step 2 and the end cover assembly assembled in the step (2).
INDUSTRIAL APPLICABILITY As described above, the present invention has a remarkable effect in that the assembling process is simple and productivity can be improved, and vibration absorption and cooling efficiency are improved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of assembling a DC motor,

The present invention is characterized in that an inner space formed by fastening the front cover assembly fastened to the end cover assembly is formed and an armature composed of a rotary shaft and a rotor is inserted into an internal space formed by fastening the end cover assembly and the front cover assembly And more particularly, to a method of assembling a DC motor which is easy to dissipate heat.

In order to increase the efficiency of the motor, it is very important to discharge heat generated inside the motor to the outside.

In the prior art of a motor in which such a heat dissipation structure is disclosed, a drive motor for a hybrid vehicle is disclosed in Laid-Open Publication No. 2014-0066880. A rotor having a permanent magnet therein and mounted on an outer surface of the rotating shaft in a manner to surround the rotating shaft; And a cooling passage which is formed in the rotary shaft so as to be capable of flowing a transmission oil therein and which is located adjacent to the rotor so as to cool the permanent magnet of the rotor by direct heat exchange, thereby inducing heat exchange inside the rotor So that the heat radiation performance of the hybrid vehicle can be improved.

Another conventional technique is disclosed in Japanese Patent Publication No. 1611571, in which a stator in which a coil is wound in an internal installation space, a housing in which a rotor is rotatably installed at a center position of the stator, A first heat pipe connected at both ends to an axial direction of the coil and the housing to move heat, and a second heat pipe installed at one side in the axial direction of the installation space opposite to the first heat pipe, And a second heat pipe connected to the axial direction of the housing to move the heat, wherein the first heat pipe has a pair of first and second heat pipes each having a wide width at both ends and connected to the axial direction of the coil and the housing A first connecting end is formed in the second heat pipe, and the second heat pipe is formed at both ends with a wide width, and a pair of second contacts A heat radiating structure of the motor characterized in that the stage is formed by a public register.

The prior art of a blow motor in which a heat radiating fan is directly constructed is disclosed in Japanese Patent Laid-Open Publication No. 2001-0021034, which is a brush holder assembly built in a housing for supplying external power to an armature assembly, comprising: a seating groove portion on which a commutator is seated; A brush holder portion formed on the side of the seating groove portion such that a brush inserted into the guide hole is in contact with a side wall of the commutator; And a fixing unit having a fixing unit connected to the seating groove through an elastic connection and coupled to the housing.

Another conventional blower motor assembly is disclosed in Korean Utility Model Publication No. 2009-0005727. In the assembly of a blower motor of an automotive air conditioner in which a housing of a blower motor is fitted and accommodated in a housing portion of a motor cover having a flange, Wherein a plurality of protrusions are formed on an outer circumferential surface of the motor cover, a plurality of insertion grooves are formed on an inner surface of the housing of the motor cover, a vibration preventing member is fitted in the insertion groove to block vibrations transmitted from the blower motor to the motor cover, And an anti-vibration member is provided with a fitting groove into which the protrusion is fitted, an assembly of a blower motor of an automotive air conditioner is disclosed.

However, the conventional DC motor has a disadvantage in that the assembling process is complicated and the production efficiency is low, and the vibration absorption and cooling efficiency are inferior.

However, the conventional motor is disadvantageous in that the assembling process is complicated and the production efficiency is low, and the vibration absorption and cooling efficiency are inferior.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method of assembling a DC motor.

The end cover assembly and the front cover assembly to be coupled to each other are coupled to each other to form an internal space, and an internal space formed by fastening the end cover assembly and the front cover assembly is inserted into the armature A method of assembling an easy DC motor, comprising: a first step of assembling the armature; 2) assembling the end cover assembly to the armature; And assembling the front cover assembly to the armature and the end cover assembly assembled in the step 2.

INDUSTRIAL APPLICABILITY As described above, the present invention has a remarkable effect in that the assembling process is simple and productivity can be improved, and vibration absorption and cooling efficiency are improved.

1 is an assembled view of an end cover assembly, a front cover assembly, and an armature of a blower motor according to the present invention.
2 is a perspective view of the blower motor armature of the present invention.
3 is a perspective view of the blower motor of the present invention.
4 is a side view of the blower motor of the present invention.
5 is a cooling operation state view of the blower motor of the present invention.
6 is a top schematic view of a first embodiment of an end cover assembly of a blower motor of the present invention.
Figures 7 to 10 are brush assembly views according to a first embodiment of an end cover assembly of a blower motor of the present invention.
11 is an exploded perspective view of an end cover assembly of a blower motor according to a second embodiment of the present invention.
12 is a top schematic view of a second embodiment of an end cover assembly of a blower motor of the present invention.
13 to 14 are brush state views according to a second embodiment of an end cover assembly of a blower motor.
15 is a perspective view showing a front cover assembly of a blower motor of the present invention.
16 is a view showing an assembling process of the blower motor of the present invention.
17 is a view showing a coil winding process of the blower motor rotor of the present invention.
18 is a schematic view of a coil winding of a blower motor rotor of the present invention.

The front cover assembly 200 fastened to the end cover assembly 100 according to the present invention is fastened to each other to form an internal space and the internal space formed by fastening the end cover assembly 100 and the front cover assembly 200 A method for assembling an armature (300) including a rotating shaft (310) and a rotor (310), the method comprising: a first step of assembling the armature (300); 2) assembling the end cover assembly 100 to the armature 300; And assembling the front cover assembly 200 to the armature 300 and the end cover assembly 100 assembled in the second step.

After the three-step process, a process of mounting a fan 430 for dissipating heat generated during operation of the armature 300 to the outside is added.

In addition, the end cover 110 of the end cover assembly 100 is formed with a cooling hole 111, which is a passage through which heat generated from the inside is radiated to the outside.

The end cover assembly 100 includes an end cover 110 and a brush 120.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a DC motor assembly method according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an end cover assembly, a front cover assembly and an armature of a blower motor according to the present invention, And Fig. 5 is a cooling operation state diagram of the blower motor of the present invention.

1, the motor M of the present invention includes an end cover assembly 100 and a front cover assembly 200 fastened to the end cover assembly 100 to form an internal space, The armature 300 is inserted into an internal space formed by fastening the end cover assembly 100 and the front cover assembly 200 so that the rotation shaft 310 of the armature 300 is inserted into the end cover 110 or the front cover 210, respectively.

2, the armature 300 includes a rotating shaft 310 and a rotor 320. The rotor 320 includes a core 321, a tooth 322, a slot 323, a coil 321, 324, and a commutator 325.

A fan (430) is mounted on the motor (M) to improve cooling efficiency.

The flange 410 is coupled to the end cover 110 and the flange cover 420 is coupled to the lower surface of the flange 410. The fan 430 is mounted on the upper surface of the flange 410,

The fan 430 is formed in a hollow shape as a whole, and a plurality of blades are formed between the pair of rings at predetermined intervals along the circumferential direction.

The arrows shown in Fig. 5 show air flow.

Air flows (not shown) through which air can flow between the flange 410 and the flange cover 420 so that air flows into the interior of the motor M through the flow path, And is discharged to the outside through a cooling hole 111 formed in the end cover 110.

The cooling holes 111 will be described later.

6 is a top schematic view of a first embodiment of an end cover assembly of a blower motor of the present invention.

6, the end cover assembly 100 according to the present invention includes a disk-shaped end cover 110 having a hollow hole formed at its central portion, a plurality of radially mounted end covers 110 And a condenser assembly 160 on which the terminals 161 are mounted. The cooling holes 111 are formed in the end cover 110 between the brushes 120 .

Meanwhile, the rotation shaft 310 of the armature 300 protrudes to the outside through the hollow hole of the end cover 110.

7 to 10 are brush assembly diagrams according to a first embodiment of an end cover assembly of a blower motor of the present invention.

7 to 10, the brush 120 according to the first embodiment is inserted into the inner space of the brush holder 130 having the upper surface thereof opened to form an inner space, and the brush holder 130, And a brush holder cap 140 mounted on an opening side of the brush holder 130 so as to prevent the brush 120 from being separated from the brush holder 130. The brush holder cap 140 includes a brush holder 130, It is possible to attach and detach it.

One surface of the brush holder 130 opposed to the rotating shaft 310 is formed with a front hole 132 passing through the inside and the outside of the brush holder 130. A brush inserted into the brush holder 130 through the front hole 132, A spring 150 is installed in the brush holder 130 so that the brush 120 is always rotated by the restoring force of the spring 150. As a result, (310).

The brush 120 inserted in the brush holder 130 is movable in the radial direction by the restoring force of the spring 150. [

An insertion protrusion 131 having elasticity is formed on a side surface of the brush holder 130 and an insertion protrusion 131 is inserted into a side surface of the brush holder cap 140 corresponding to the insertion protrusion 131 The insertion protrusion 131 of the brush holder 130 is inserted into the insertion hole 141 of the brush holder cap 140 so that the brush holder 130 and the brush holder cap 140 are inserted into the insertion hole 141 of the brush holder cap 140. [ They are bound together.

More specifically, the insertion protrusion 131 has a step formed due to a difference in circumference from the body portion, and a sloped surface having a sharp point toward the end portion is formed and inserted into the insertion hole 141 of the brush holder cap 140 And after being inserted, it is not easily separated by the step.

A choke coil 170 for blocking electromagnetic waves is mounted on the upper surface of the end cover 110. The choke coil 170 is fixed by a fixing member 180. [

The fixing member 180 includes an elastic body 181 protruding upward from the upper surface of the end cover 110 and a locking protrusion 182 formed at the upper end of the elastic body 181 so as to have a larger circumference than the elastic body 181 One side of the latching protrusion 182 is formed to be inclined and has a pointed shape as it goes to the upper side.

When the pair of fixing members 180 protrude from the upper surface of the end cover 110 so as to be spaced apart from each other by a predetermined distance so that the inclined surfaces of the locking projections 182 face each other, The choke coil 170 is inserted and mounted so that the pair of fixing members 180 are further formed along the longitudinal direction of the choke coil 170 so that the choke coil 170 is more tightly coupled.

The principle that the choke coil 170 cuts off the electromagnetic wave is a well-known technology for public use, and a detailed description thereof will be omitted.

The brush holder 130 is mounted on the guide hole 112 of the end cover 110. A plurality of coupling protrusions 113 protrude upward from both sides of the guide hole 112, The connection member 134 having the engagement groove 135 formed in the upper and lower sides is fastened to one side of the projection 113 to be inserted into the projection 113.

A coupling protrusion 133 is formed on both sides in the longitudinal direction of the brush holder 130 so as to correspond to the coupling groove 135. The coupling protrusion 133 is formed on the other side surface of the coupling member 134, Respectively.

11 is a perspective view of a second embodiment of an end cover assembly of a blower motor of the present invention, and Fig. 12 is a plan overview diagram of a second embodiment of an end cover assembly of a blower motor of the present invention.

11 to 12, the end cover assembly 100 according to the second embodiment includes a disk-shaped end cover 110 having a hollow hole formed at a central portion thereof, A brush 120 inserted into the guide hole 112 and a condenser assembly 160 on which the terminal 161 is mounted. The brush 120 has a plurality of guide holes 112 formed therein, And a cooling hole 111 is formed through the upper and lower portions so that the heat generated in the inner space formed by the end cover 110 and the front cover 200 to be described later is radiated to the outside.

13 to 14 are brush state diagrams of a second embodiment of an end cover assembly of a blower motor.

13 to 14, the brush 120 according to the second embodiment of the end cover assembly is inserted into the internal space of the brush holder 130 having the upper surface opened and the internal space formed therein, and the brush holder And a brush holder cap 140 mounted on an opening of the brush holder 130 to prevent the brush 120 from detaching from the brush holder 130.

The rib 121 is protruded from the outer surface of the brush holder 130 in the longitudinal direction and the protruded rib 121 is fixed to the inner surface of the guide hole 112, So that vibration absorption is facilitated.

The shape of the brush holder 130 and the tightening relationship with the brush holder cap 140 are the same as those described above.

15 is a perspective view showing a front cover assembly of a blower motor of the present invention.

As shown in FIG. 15, a plurality of stator 220 are fixed along the circumferential direction on the inner surface of the front cover 210, and four stator 200 are fixed in the present invention.

The assembly procedure of the blower motor is as follows.

16 is a degree of assembly of the blower motor of the present invention.

As shown in FIG. 16, the present invention relates to a blower motor, which includes an end cover assembly 100 including an armature 300 and an end cover 110, and a front cover 210 including a front cover 210, A first step of assembling the motor M made up of the assembly 200; And a two-step process of assembling the motor fan 400 including the fan 430 to the motor M assembled by the one-step process.

Particularly, the 2-step process includes a 2-1 step of assembling the insulator sleeve 440 to the front and rear ends of the motor M assembled by the one-step process; Step 2-2 of assembling the flange 410 and the flange cover 420 to the end cover assembly 100; And assembling the fan 430 to the front cover assembly 200 in steps 2 and 3.

Further, after the 2-3 step process, a 2-4 step process for mounting the bearing is added.

Fig. 17 is a view showing a process in which a coil is wound around a rotor of a blower motor of the present invention, and Fig. 18 is a schematic view of a coil of a rotor of a blower motor of the present invention.

As shown in FIGS. 17 to 18, the segment of the core 322 of the core 321 and the segment of the commutator 325 are each composed of 17 pieces.

Thus, the coil winding method of the blower motor rotor of the present invention is as follows.

For convenience of description, when referring to the segment outer tooth 313, the representation of the commutator 325 and the core 321 is omitted.

Starting from segment 1, it is drawn into the slot between the 15th and 16th teeth, then drawn into the slot between the 11th and 12th teeth, and once wound in the clockwise direction on the 12th and 15th teeth, Segmenting the first segment;

After entering the slot between No. 6 and No. 7 Tees in the 9th segment, it is drawn into the slot between No. 2 and No. 3 teeth and wound once in the clockwise direction to No. 3 and No. 6 teeth. 2 steps to get caught;

In the 17th segment, a slot between the 14th and 15th teeth is drawn into the slot between the 10th thread and the 11th thread, and the thread is wound clockwise to the 11th thread and the 14th thread. 3 steps to get caught;

In the 8th segment, it is drawn into the slot between the No. 5 thread and the No. 6 thread, and then drawn into the slot between the No. 1 thread and No. 2 thread. Then, the No. 2 thread and the No. 5 thread are wound clockwise one time, 4 steps to get caught;

After entering the slot between the No. 13 tooth and the No. 14 tooth in the 16th segment, it is drawn into the slot between the No. 9 tooth and the No. 10 tooth and wound once to the No. 10 tooth and the No. 13 tooth clockwise. 5 steps to take;

After entering the slot between No. 4 and No. 5 Tees in the 7th segment, it is drawn into the slot between the No. 17 and No. 1 teeth and wound once on the No. 1 and No. 4 teeth clockwise. 6 steps to take;

After entering the slot between the No. 12 and No. 13 teeth in the 15th segment, it is drawn into the slot between the No. 8 and No. 9 teeth and wound once to the No. 9 tooth and the No. 12 tooth clockwise. 7 steps to get caught;

After entering the slot between the No. 3 tooth and the No. 4 tooth in the 6th segment, it is drawn into the slot between the No. 16 tooth and No. 17 tooth and wound once to the No. 17 tooth and the No. 3 tooth clockwise. 8 steps to take;

After entering the slot between the No. 11 thread and the No. 12 thread in the 14th segment, it is drawn into the slot between the No. 7 thread and the No. 8 thread and wound once on the No. 8 thread and the No. 11 thread clockwise. 9 steps to take;

After entering the slot between the No. 2 and No. 3 teeth in the 5th segment, it is drawn into the slot between the No. 15 tooth and No. 16 tooth and wound once in the clockwise direction to the No. 16 tooth and the No. 2 tooth. 10 steps to take;

After entering the slot between the 10th thread and the 11th thread in the 13th segment, it is drawn into the slot between the 6th thread and the 7th thread and wound once in the clockwise direction to the 7th thread and the 10th thread. 11 steps to take;

In the 4th segment, it is drawn into the slot between the No. 1 tooth and the No. 2 tooth, and then drawn into the slot between the No. 14 tooth and the No. 15 tooth to be wound once in the clockwise direction to the No. 15 tooth and the No. 1 tooth. 12 steps to take;

After entering the slot between the No. 9 and No. 10 teeth in the 12th segment, it is drawn into the slot between the No. 5 and No. 6 teeth and wound once in the clockwise direction to No. 6 and No. 9 teeth. Step 13 to make it take;

After entering the slot between the 17th and 1st tees in the 3rd segment, it is drawn into the slot between the 13th tee and the 14th tee, and once wound clockwise to the 14th tee and the 17th tee, 14;

After entering the slot between the No. 8 and No. 9 teeth in the 11th segment, it is drawn into the slot between No. 4 and No. 5 teeth and wound once to the No. 5 tooth and No. 8 tooth clockwise. 15 steps to take;

After entering the slot between the No. 16 thread and the No. 17 thread in the 2nd segment, it is drawn into the slot between the No. 12 thread and the No. 13 thread and wound once to the No. 13 thread and the No. 16 thread clockwise. 16 steps to take;

After entering the slot between No. 7 and No. 8 teeth in the 10th segment, it is drawn into the slot between No. 3 and No. 4 teeth and wound once on the No. 4 tooth and No. 7 tooth in the clockwise direction. And a seventeenth step of performing wiring.

Then, return to the operation of step 1 and repeat the winding operation of step 17.

INDUSTRIAL APPLICABILITY As described above, the present invention has a remarkable effect in that the assembling process is simple and productivity can be improved, and vibration absorption and cooling efficiency are improved.

100. End cover assembly
110. End cover 111. Cooling hole 112. Guide hole
113. Coupling protrusion
120. Brushes
130. Brush holder 131. Insertion protrusion 132. Front hole
133. engaging projection 134. connecting member 135. engaging groove
136. The rib
140. Brush holder cap 141. Insertion hole
150. Spring
160. Capacitor assembly
170. Choke coil
180. Fixing member 181. Elastic member 182. Locking projection
200. Front cover assembly
210. Front cover
220. Stator
300. Amateur
310. A rotating shaft
320. Rotor 321. Core
322. Teeth 323. Slot 324. Coil
325. Commutators
400. Blower motor
410. Flange
420. Flange cover
430. Fan
440. Sleeve
M. motor

Claims (3)

The front cover assembly 200 is coupled to the end cover assembly 100 to form an internal space and an internal space formed by fastening the end cover assembly 100 and the front cover assembly 200 A method of manufacturing a DC motor including an armature 300 including a rotor 320 and a rotor 320,
A first step of assembling the armature 300; 2) assembling the end cover assembly 100 to the armature 300; And a third step of assembling the front cover assembly 200 to the armature 300 and the end cover assembly 100 assembled in step 2,
After the third step, a step of mounting a fan 430 for dissipating heat generated during driving of the armature 300 to the outside is added,
The end cover 110 of the end cover assembly 100 is formed with a cooling hole 111, which is a passage through which heat generated inside is radiated to the outside,
The end cover assembly 100 includes a disk-shaped end cover 110 having a hollow hole formed at its central portion, a plurality of brushes 120 radially mounted on the upper surface of the end cover 110, A cooling hole 111 is formed in the end cover 110 between the brushes 120 so as to pass through the upper and lower ends of the condenser assembly 160,
The rotating shaft 310 of the armature 300 protrudes outward from the hollow hole of the end cover 110,
The brush 120 is inserted into an inner space of a brush holder 130 having an upper surface opened and formed with an inner space and the brush 120 is inserted into the brush holder 130 so as to prevent the brush 120 from being detached from the brush holder 130. [ And a brush holder cap 140 mounted on the opening of the holder 130. The brush holder cap 140 is detachable from the brush holder 130,
One surface of the brush holder 130 opposed to the rotation shaft 310 is formed with a front hole 132 penetrating the inside and the outside of the brush holder 130. The brush 130 inserted into the brush holder 130 through the front hole 132 The brush 120 is always rotated by the restoring force of the spring 150 so that the brush 120 is always in contact with the rotating shaft 310. [ 310,
The brush 120 inserted in the brush holder 130 is movable in the radial direction by the restoring force of the spring 150,
An insertion protrusion 131 having an elastic force is formed on a side surface of the brush holder 130 and a insertion protrusion 131 is inserted into a side surface of the brush holder cap 140 corresponding to the insertion protrusion 131, And the insertion protrusion 131 of the brush holder 130 is inserted into the insertion hole 141 of the brush holder cap 140 so that the brush holder 130 and the brush holder cap 140 are connected to each other Lt; / RTI >
The insertion protrusion 131 has a step formed due to a difference in circumference from the body portion and has a sharp inclined surface toward the end so that insertion into the insertion hole 141 of the brush holder cap 140 is facilitated, Wherein the insulator is not easily separated by the step after insertion.
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