KR101828184B1 - Winding structure of dc motor for vehicle and winding method therefor - Google Patents

Abstract

According to the present invention, a coil winding structure of a DC motor for a vehicle comprises: a cover assembly (10); a yoke assembly (30) having a plurality of excitation poles (32) disposed between the cover assembly (10) and a lower housing (40); an armature assembly (20) including an armature core (21) having a plurality of extrema (22) on which coils (60) interacting with the excitation poles (32) are wound, and a commutator (24) having the same number of commutator pieces (25) to correspond to the excitation poles (32) at a lower portion of the armature core (21); and a brush (80) disposed around the commutator (24), and being in selective contact with the commutator (24) by rotating the armature assembly (20). According to the coil winding structure of the present invention, the coils (60) wound around each of the extrema (22) are wound around five extrema (22), one coil winding group wound around five extrema (22) again at intervals of seven poles (22) is connected to corresponding commutator pieces (25), and the coil winding group connected to the commutator pieces (25) is continuously repeated through a next slot of the armature core (21). Accordingly, the DC motor for a vehicle having high efficiency by strengthening a magnetic field can be provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a winding structure of a DC motor for a vehicle,

The present invention relates to a direct current motor for a vehicle. More particularly, the present invention relates to a direct current motor for a vehicle having a winding structure of a new pattern by easily and efficiently winding the coil winding connecting the extremity of the armature core of the brush DC motor and the commutator segment, and having excellent driving efficiency.

Generally, a direct current motor is constituted such that an armature is rotatably arranged inside a yoke on which magnets are arranged on the inner circumferential surface. The armature has a plurality of teeth extending radially from the rotation axis, and a plurality of slots for the armature coil winding are formed in the axial direction between the extreme value and the adjacent extreme values.

A plurality of coils are wound around the slots at predetermined intervals, and each of the coils is connected to the commutator element of the commutator which is installed at a rotational axis spaced apart from the armature by a predetermined distance. Each of the commutator segments is connected to a brush so as to be energized. Therefore, when an electric current is supplied from the brush to the commutator, an electric field is formed in each coil, and the interaction between the generated electric field and the magnet attached to the yoke causes the rotating shaft equipped with the armature and the commutator to rotate, .

In recent years, motors of various structures have been researched and developed in order to miniaturize the motors and maximize the driving efficiency in accordance with the demand of the DC motor market. For example, in a DC motor disclosed in Korean Patent No. 10-1200505, a coil wound around an armature core has 20 commutator segments and an armature core has the same number of slots as a commutator segment.

In the conventional DC motor thus constituted, one end of the coil connected to the commutator element is wound at four extremities so as to have four pitches through any slot of the armature core, the other end of the coil wound is connected to the commutator element, The coils are wound on four extreme values so as to have pitches and the coils are wound on three extreme values having three pitches in the opposite direction to the other end of each of the wound coils, So that the connection pattern for connection and disconnection of the coils is very complicated and the winding operation of the coils is very difficult, so that a quick assembling process can not be achieved. As a result, the manufacturing cost of the motor is increased, and the coils wound on the armature core slots and the extreme cores are not uniformly distributed in the slots and extremes of the armature cores. Therefore, the circumferential surfaces of the armature cores, So that the motor efficiency is lowered.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a DC motor for a vehicle in which the efficiency of a motor is maximized by applying a new winding pattern that enables quick and easy assembly.

It is another object of the present invention to provide a DC motor for a vehicle having a high efficiency through magnetic field enhancement by distributing the distribution of the coil uniformly to the armature core.

The coil winding structure of the direct current motor for a vehicle according to the present invention

A cover assembly (10);

A yoke assembly (30) having a plurality of magnetic poles (32) arranged between the cover assembly (10) and the lower housing (40);

An armature core 21 having a plurality of extreme values 22 at which the coils 60 interacting with the magnetic pole 32 are wound; An armature assembly (20) comprising a commutator (24) having a number of commutator segments (25); And

And a brush (80) disposed around the commutator (24) and selectively in contact with the commutator (24) as the armature assembly (20) rotates, the coil winding structure comprising:

The coil 60 wound on each of the extreme values 22 is wound on the five extreme values 22 and one coil winding group wound on five extreme values 22 again at intervals of seven extreme values 22 And the coil winding wire group connected to the commutator element 25 and connected to the commutator element 25 is a structure repeated continuously through the next slot of the armature core 21. [

In the present invention,

The coil winding group includes first through n-th coil winding groups (where n is a natural number of 12 or less)

The n-th coil winding group starts from the n-th commutator segment (when n is 2 or more, it starts at the {24- (n-2)} commutator segments), {12- And wherein at least two turns are wound at an interval of five pitches from the a-th extremity, wherein a is n when n is 1 and {24- (n-2) if n is 2 or more, (B-1) and at least two turns at five pitch intervals from the b-th extreme value, where b is connected to (14-n)} and {24- (n-1)} commutator segments.

In the present invention, it is preferable that the windings having the intervals of 5 pitches are wound in the reverse direction.

The coil winding method of a DC motor for a vehicle according to the present invention

In a coil winding method of a DC motor for a vehicle having n commutator segments and n extreme values (where n is a natural number)

Starting at the {24- (n-2)} commutator segments when n is greater than or equal to 2) at the start of the coils in the nth commutator thin film;

Connecting the coil with a {12- (n-2)} commutator segment;

Wherein the coil is wound at least twice at an interval of five pitches from the a-th pole, where a is n when n is 1 and {24- (n-2) if n is 2 or more, At least two turns at five pitch intervals from where b = (14-n); And

Connecting the coil to a {24- (n-1)} commutator segment;

And a control unit.

According to the direct current motor for a vehicle of the present invention, when the four-pole motor is implemented, the improved winding pattern is applied to quickly perform the winding operation to improve the assemblability, thereby reducing the manufacturing cost of the motor, It is possible to maximize the output and efficiency of the motor due to the magnetic field enhancement.

1 is a perspective view of a motor according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of the motor of Fig. 1;
3 is a perspective view of the motor of FIG. 1, with the cover assembly removed.
FIG. 4 is a plan view of a main part showing a magnetic pole, an amateur core, and a brush for explaining the present invention. FIG.
5 is a perspective view showing a state in which an amateur core and a commutator are combined according to an embodiment of the present invention.
6 is a plan view of the amateur core of the present invention in combination with a commutator.
7 is a plan view showing a state where a coil is wound on the armature core of the present invention.
8 is a plan view showing the commutator of the present invention.
9 is a coil wiring diagram for explaining the coil winding method of the present invention.
Hereinafter, a preferred embodiment of the motor according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a motor according to the present invention, FIG. 2 is an exploded perspective view of the motor of FIG. 1, FIG. 3 is a perspective view of the motor of FIG. FIG. 5 is a perspective view showing a state in which an amateur core and a commutator are combined according to an embodiment of the present invention, FIG. 6 is a plan view of a state in which an armature core and a commutator of the present invention are combined, FIG. 7 is a plan view showing a state where a coil is wound on the armature core of the present invention, and FIG. 8 is a plan view showing the commutator of the present invention.

1 to 8, a motor according to an embodiment of the present invention includes a cover assembly 10, an armature assembly 20 and a yoke assembly 30 and a lower housing 40, 50 is a blower fan added to the DC motor of the present invention.

The yoke assembly 30 includes a plurality of magnetic poles 32 inside a yoke cylinder 31.

The magnetic pole 32 is composed of two pairs of quadrupole magnets: a first N pole P1, a first S pole P2, a second N pole P3, and a second S pole P4, The inner circumferential surface of the yoke cylindrical body 31 is sequentially arranged with a predetermined interval therebetween.

The armature assembly 20 includes an armature core 21 having a plurality of extreme values 22 at which the coils 60 interacting with the plurality of magnetic poles 32 are wound, And a commutator 24 having the same number of commutator segments 25 corresponding to the extreme values 22. The upper portion of each commutator segment 25 has a coil connecting hook 25A bent outward .

Although the coil connecting hook 25A to which the coil 60 is connected is electrically connected to the commutator element 25 in the following description and the coil 60 is actually connected to the coil connecting hook 25A, 25 as shown in Fig.

The rotating shaft 26 passes through the center of the armature core 21 and the commutator 24. When the motor is operated, the armature core 21 and the commutator 24 rotate together with the rotating shaft 26. At this time, a bearing for rotatably supporting the rotary shaft 26 may be provided on the rotary shaft 26 and the lower portion thereof.

The amateur core 21 includes an extreme 22 that extends radially from the base, as shown in Figs. 4-6. The extreme values 22 may be twenty-four in total. The extreme values 22 may include a second extreme value T2, a third extreme value T3, and a third extreme value T3 at regular intervals in the clockwise direction (or counterclockwise direction) The seventh extreme value T7, the eighth extreme value T8, the ninth extreme value T9, the tenth extreme value T10, the fifth extreme value T7, the fifth extreme value T5, the sixth extreme value T6, 11th extreme value T11, 12th extreme value T12 and 13th extreme value T13, 14th extreme value T14, 15th extreme value T15, 16th extreme value T16, 17th extreme value T17, A twenty-first extreme value T21, a twenty-second extreme value T22, a twenty-third extreme value T23, and a twenty-fourth extreme value T24 are formed.

Each of the extreme values 22 is wound with a coil 60. When a current is applied to the coil 60, torque is generated through interaction with the magnetic pole 32. A specific winding method related to this will be described later with reference to Fig.

Meanwhile, one slot is formed between the extreme value 22 and the extreme value 22, respectively. That is, a first slot S1 is formed between the first extreme value T1 and the second extreme value T2, and a second slot S2 is formed between the second extreme value T2 and the third extreme value T3 . Similarly, a third slot S3, a fourth slot S4, a fifth slot S5, a sixth slot S6, a seventh slot S7, and a sixth slot S6 are provided between the neighboring extreme values 22 and 22, The eighth slot S8, the ninth slot S9, the tenth slot S10, the eleventh slot S11, the twelfth slot S12, the thirteenth slot S13, the fourteenth slot S14, 15th slot S15, the 16th slot S16, the 17th slot S17, the 18th slot S18, the 19th slot S19, the 20th slot S20, the 21st slot S21, The slot S22, the 23rd slot S23, and the 24th slot S24, respectively.

The commutator 24 includes a commutator segment 25 including the coil connection hook 25A and the commutator 24 may be disposed below the lower armature core 21. [ The commutator segments 25 may have the same number corresponding to the extreme value 22, that is, 24. Concretely, the second commutator segments C2 and the second commutator segments C2 are arranged with a predetermined interval in the clockwise or counterclockwise direction as with the extreme value 22 on the basis of the first commutator segments C1 located below the first extreme value T1, The third commutator segment C3, the fourth commutator segment C4, the fifth commutator segment C5, the sixth commutator segment C6, the seventh commutator segment C7, the eighth commutator segment C8, The twelfth commutator element C9, the tenth commutator element C10, the eleventh commutator element C11, the twelfth commutator element C12, the thirteenth commutator element C13, the fourteenth commutator element C14, The twenty-first commutator element C15, the sixteenth commutator element C16, the seventeenth commutator element C17, the eighteenth commutator element C18, the nineteenth commutator element C19, the twentieth commutator element C20, The twenty-second commutator element C22, the twenty-third commutator element C23, and the twenty-fourth commutator element C24 are formed. The commutator elements 25 are electrically insulated from each other and the coil connecting hook 25A and the commutator element 25 are electrically connected to each other by a coil 60, Respectively.

In the embodiment of the present invention described above, four excitation poles 32, 24 extreme points 22 and 24 commutator segments 25 are illustrated, but the present invention is not limited thereto. If necessary, 32, the extreme value 22, and the number of the commutator segments 25 can be varied.

A power supply connector 70 may be installed below the yoke cylindrical body 31. A brush (80) is fixedly installed inside the yoke assembly (30). The brush 80 selectively makes contact with the commutator 24 as the armature assembly 20 rotates and contacts the pin of the power supply connector 70 through the commutator 24, So that current can flow through the coil 60. The brush 80 is composed of a pair of a first brush 81 and a second brush 82. The first brush 81 and the second brush 82 are arranged at an angle of 90 ° with respect to each other .

The winding structure of the coil 60 and the method thereof in the DC motor having such a configuration will be described in detail with reference to FIGS. 7 to 9. FIG.

First, the coil winding structure according to the embodiment of the present invention has first to twelfth coil winding wire groups N1 to N12, and each coil winding wire group Nn has four stages (n-1, n-2, n -3, and n-4, respectively.

Specifically, the first coil winding group N1 is the first stage, and the coil starts from the first commutator segment C1 (winding stage 1-1). As a second step, the coil starting from the first commutator segment C1 is connected to the thirteenth commutator segment C13 (winding step 1-2). In the third step, the first extreme value T1, the twenty-fourth extreme value T24, the twenty-third extreme value T23, the twenty-second extreme value T22, and the twenty- (T13), the twelfth extreme value T12, the eleventh extreme value T11 (T11), and the twelfth extreme value T11 , The tenth extremum T10, and the ninth extremum T9 are wound by the number of windings (winding step 1-3). In a fourth step, the coils are wound at five pitch intervals and then connected to the twenty-fourth commutator segment C24 (winding step 1-4). Thus, the first coil winding train group N1 is formed. In the present invention, the winding direction of the coils is preferably a reverse winding in which the extreme values, the slots and the number of the commutator pieces are moved in the opposite direction from the designated direction. The number of turns wound at five pitches is not particularly limited, but it is preferable that the number of turns is two or more turns.

The second coil winding group N2 is the first stage, and the coil starts from the twenty-fourth commutator segment C24 (winding stage 2-1). As a second step, the coil starting from the twenty-fourth commutator segment C24 is connected to the twelfth commutator segment C12 (winding step 2-2). In the third step, the twenty-fourth extreme value T24, the twenty-third extreme value T23, the twenty-second extreme value T22, the twenty-first extreme value T21, and the twenty- The twelfth extreme value T12, the eleventh extreme value T11, the tenth extreme value T10, and the twelfth extreme value T12 are repeated at intervals of five pitches from the twelfth extreme value T12, , The ninth extreme value T9 and the eighth extreme value T8 are wound by the number of windings (winding step 2-3). In the fourth step, the coils are wound at 5 pitch intervals and then connected to the 23rd commutator segment C23 (winding step 2-4). Thus, the second coil winding group N2 is formed.

The third coil winding group N3 is the first stage, and the coil starts from the 23rd commutator segment C23 (winding stage 3-1). As a second step, the coil starting from the twenty-third commutator segment C23 is connected to the eleventh commutator segment C11 (step 3-2 of winding). The twenty-second extreme value T22, the twenty-first extreme value T21, the twentieth extreme value T20, and the nineteenth extreme value T20, (T11), the tenth (T10), the tenth (T10), and the ninth extreme (T11) are repeated at intervals of five pitches from the eleventh extreme value (T11) T9), the eighth extreme value T8, and the seventh extreme value T7 are wound by the number of windings (winding step 3-3). In a fourth step, the coils are wound at 5 pitch intervals and then connected to a twenty-second commutator segment C22 (winding step 3-4). Thus, the third coil winding train group N3 is formed.

The fourth coil winding group N4 is the first stage, and the coil starts from the twenty-second commutator segment C22 (winding step 4-1). As a second step, the coil starting from the twenty-second commutator segment C22 is connected to the tenth commutator segment C10 (winding step 4-2). In the third step, the twenty-second extreme value T22, the twenty-first extreme value T21, the twentieth extreme value T20, the nineteenth extreme value T19, and the eighteenth extreme value T20, (T10), the ninth extreme (T9), the eighth extreme (T8), and the seventh extreme (T8) , The seventh extreme value T7 and the sixth extreme value T6 are wound by the number of windings (winding step 4-3). In a fourth step, the coils are wound at five pitch intervals and then connected to the twenty-first commutator segment C21 (winding step 4-4). In this way, the fourth coil winding train group N4 is formed.

The fifth coil winding group N5 is the first stage, and the coil starts from the twenty-first commutator segment C21 (winding step 5-1). As a second step, the coil starting from the twenty-first commutator segment C21 is connected to the ninth commutator segment C9 (step 5-2 of winding). In the third step, the twenty-first extreme value T21, the twentieth extreme value T20, the nineteenth extreme value T19, the eighteenth extreme value T18, and the seventeenth extreme value T18, (T9), the eighth extreme (T8), the seventh extreme (T7), the seventh extreme (T7), and the seventh extreme (T7) , The sixth extreme value T6 and the fifth extreme value T5 are wound by the number of windings (winding step 5-3). In the fourth step, the coils are wound at five pitch intervals and then connected to the twentieth commutator segment C20 (winding step 5-4). Thus, the fifth coil winding train group N5 is formed.

The sixth coil winding group N6 is the first stage, and the coil starts from the twentieth commutator segment C20 (winding stage 6-1). As a second step, the coil starting from the twentieth commutator segment C20 is connected to the eighth commutator segment C8 (step 6-2 of winding). In the third step, the twenty-first extreme value T20, the nineteenth extreme value T19, the eighteenth extreme value T18, the seventeenth extreme value T17 and the sixteenth extreme value T20 (T8), the seventh extreme value (T7), the sixth extreme value (T6), and the seventh extreme value (T7) ), The fifth extreme value T5 and the fourth extreme value T4 are wound by the number of turns (step 6-3 of winding). In a fourth step, the coils are wound at five pitch intervals and then connected to the nineteenth commutator segments C19 (winding step 6-4). Thus, the sixth coil winding train group N6 is formed.

The seventh coil winding group N7 is the first stage, and the coil starts from the nineteenth commutator segment C19 (winding step 7-1). As a second step, the coil starting from the nineteenth commutator segment C19 is connected to the seventh commutator segment C7 (step 7-2 of winding). In the third step, the nineteenth (T19), the 18th extreme (T18), the 17th extreme (T17), the 16th extreme (T16) and the 15th extreme The seventh extreme value T5 and the fifth extreme value T5 from the seventh extreme value T7 to the seventh extreme value T7 and from the seventh extreme value T7 to the seventh extreme value T7, , The fourth extreme value T4 and the third extreme value T3 are wound by the number of turns (step 7-3 of winding). In a fourth step, the coils are wound at five pitch intervals and then connected to the eighteenth commutator segment C18 (winding step 7-4). Thus, the seventh coil winding train group N7 is formed.

The eighth coil winding group N8 is the first stage, and the coil starts from the 18th commutator segment C18 (winding step 8-1). As a second step, the coil starting from the 18th commutator segment C18 is connected to the sixth commutator segment C6 (step 8-2 of winding). In the third step, the eighteenth extreme value T18, the seventeenth extreme value T17, the sixteenth extreme value T16, the fifteenth extreme value T15, and the fourteenth extreme value T15, (T6), the fifth extremum T5, the fourth extremum T4 (T5), and the fourth extremum T4 are wound at a pitch of five pitches from the sixth extremum T6, , The third extreme value T3 and the second extreme value T2 are wound by the number of turns (step 8-3 of winding). In the fourth step, the coils are wound at five pitch intervals and then connected to the seventeenth commutator segments C17 (winding step 8-4). Thus, the eighth coil winding group N8 is formed.

The ninth coil group N9 is the first stage, and the coil starts from the seventeenth commutator segment C17 (winding step 9-1). As a second step, the coil starting from the seventeenth commutator segment C17 is connected to the fifth commutator segment C5 (step 9-2 of winding). In the third step, the seventeenth extreme value T17, the twelfth extreme value T16, the fifteenth extreme value T15, the fourteenth extreme value T14, and the thirteenth extreme value T14, (T5), the fourth extremum value (T4), the third extremum value (T3), and the fourth extremum value (T3) ), The second extreme value T2 and the first extreme value T1 are wound by the number of turns (step 9-3 of winding). In a fourth step, the coils are wound at five pitch intervals and then connected to the sixteenth commutator segments C16 (winding step 9-4). Thus, a ninth coil winding group N9 is formed.

The tenth coil winding group N10 is the first stage, and the coil starts from the sixteenth commutator segment C16 (winding step 10-1). As a second step, the coil starting from the sixteenth commutator segment C16 is connected to the fourth commutator segment C4 (step 10-2 of winding). In the third step, the 16th extreme value T16, the 15th extreme value T15, the 14th extreme value T14, the 13th extreme value T13, (T4), the third extreme value (T3), the second extreme value (T2), and the second extreme value (T2) ), The first extreme value T1 and the twenty-fourth extreme value T24 are wound by the number of turns (Step 10-3 of winding). In the fourth stage, the coils are wound at five pitch intervals and then connected to the fifteenth commutator segment C15 (winding step 10-4). In this manner, a tenth coil winding group N10 is formed.

The eleventh coil winding group N11 is the first stage, and the coil starts from the fifteenth commutator segment C15 (winding step 11-1). As a second step, the coil starting from the fifteenth commutator segment C15 is connected to the third commutator segment C3 (Step 11-2 of winding). In the third stage, the first and second extreme values T15 and T15 are set at intervals of five pitches from the fifteenth extreme value T15, that is, at the fifteenth extreme value T15, the fourteenth extreme value T14, the thirteenth extreme value T13, (T3), the second extreme value (T2), the first extreme value (T1), and the third extreme value (T3) The twenty-fourth extreme value T24, and the twenty-third extreme value T23 are wound by the number of windings (Step 11-3 of winding). In a fourth step, the coils are wound at five pitch intervals and then connected to the fourteenth commutator segment C14 (winding step 11-4). Thus, the eleventh coil winding group N10 is formed.

The twelfth coil winding group N12 is the first stage, and the coil starts from the fourteenth commutator segment C14 (winding step 12-1). As a second step, the coil starting from the fourteenth commutator segment C14 is connected to the second commutator segment C2 (step 12-2 of winding). In the third stage, the fourteenth extreme value T14, the thirteenth extreme value T13, the twelfth extreme value T12, the eleventh extreme value T11, and the tenth extreme value T14 are recorded at intervals of five pitches from the fourteenth extreme value T14, (T2), the first extreme value (T1), the twenty-fourth extreme value (T24), and the second extreme value (T2) The twenty-third extreme value T23, and the twenty-second extreme value T22 are wound by the number of turns (step 12-3 of winding). In the fourth step, the coils are wound at 5 pitch intervals and then connected to the 13th commutator segment C13 (winding step 12-4). Thus, a twelfth coil winding group N10 is formed.

When the winding is completed up to the twelfth coil winding group N10, the coil is connected from the thirteenth commutator segment C13 to the first commutator segment C1 so that all of the first through twelfth coil winding group are electrically connected, Thereby forming a winding pattern. The winding of the entire coil winding group may be repeated depending on the specifications of the motor or the necessity. Such a coil winding pattern is shown in the following table.

[Table 1] Coil winding pattern table

The generalization of the winding pattern structure of the above-described coil can be expressed by the following expression.

[Table 2] Generalized winding pattern table

Here, n is a natural number and has a value from 1 to 12.

The coil 60 wound around each extreme value 22 of the present invention is wound by five pitches, skipping seven pitches, and then winding the extremum having an interval of each of the five pitches to form a single coil winding group, 25, and the coil winding group connected to the commutator segments 25 may be sequentially and sequentially repeated through the next slot of the armature core 21 to provide the winding structure of the N-th coil winding group.

According to the present invention having such a configuration, the coil 60 connected to the commutator element 25 is connected to the armature core 21 through a slot of the armature core 21, And the other coil winding group is sequentially wound in the order of the slots of the armature core 21 in the order of the number of slots of the armature core 21 in the order of the number of slots, Lt; RTI ID = 0.0 > a < / RTI > winding pattern. Therefore, the winding operation for winding the windings around the extreme values 22 through the respective slots can be performed in a stepwise and sequential manner, so that the winding operation of the coils 60 is carried out very easily and quickly, The manufacturing cost of the motor can be reduced and the respective coils 60 connected to the commutator element 25 can be mounted on the upper and lower extremities of the designed 5 pitches, 7 pitches, 5 pitch intervals, The coil 60 is distributed in a balanced manner by the first to Nth coil winding groups so that the winding distribution of the coil 60 is concentrated on the corresponding extreme value 22, So that the magnetic field generated by the correlation with the magnetic pole 32 is further strengthened, thereby maximizing the output and efficiency of the motor.

It is to be understood that the foregoing detailed description of the present invention has been presented for illustrative purposes only and is not intended to limit the scope of the present invention. It is intended that the scope of the invention be defined by the claims appended hereto, and that all such modifications and variations are intended to be included within the scope of the present invention.

10: Cover assembly 20: Amateur assembly
21: Amateur Core 22: Extreme
24: commutator 25: commutator
25A: coil connection hook 26:
30: yoke assembly 31: yoke cylinder
32: Stimulus 40: Lower housing
50: blower fan 60: coil
70: Power supply connector 80: Brush
81, 82: first and second brushes

Claims (4)

delete A cover assembly (10);
A yoke assembly (30) having a plurality of magnetic poles (32) arranged between the cover assembly (10) and the lower housing (40);
An armature core 21 having a plurality of extreme values 22 at which the coils 60 interacting with the magnetic pole 32 are wound; An armature assembly (20) comprising a commutator (24) having a number of commutator segments (25); And
And a brush (80) disposed around the commutator (24) and selectively in contact with the commutator (24) as the armature assembly (20) rotates, the coil winding structure comprising:
The coil 60 wound on each of the extreme values 22 is wound on the five extreme values 22 and one coil winding group wound on five extreme values 22 again at intervals of seven extreme values 22 The coil winding group connected to the commutator element 25 and connected to the commutator element 25 has a structure repeated continuously through the next slot of the armature core 21,
The coil winding group includes first through n-th coil winding groups (where n is a natural number of 12 or less)
The n-th coil winding group starts from the n-th commutator segment (when n is 2 or more, it starts at the {24- (n-2)} commutator segments), {12- And wherein at least two turns are wound at an interval of five pitches from the a-th extremity, wherein a is n when n is 1 and {24- (n-2) if n is 2 or more, Wherein the winding is wound at least twice at an interval of five pitches from the b-th extreme value, where b is connected to (14-n)} and {24- (n-1)} commutator pieces. Coil winding structure. 3. The coil winding structure of a direct current motor for a motor according to claim 2, wherein the windings having the pitch of 5 pitches are wound in opposite directions. In a coil winding method of a DC motor for a vehicle having n commutator segments and n extreme values (where n is a natural number)
Starting at the {24- (n-2)} commutator segments when n is greater than or equal to 2) at the start of the coils in the nth commutator thin film;
Connecting the coil with a {12- (n-2)} commutator segment;
Wherein the coil is wound at least twice at an interval of five pitches from the a-th pole, where a is n when n is 1 and {24- (n-2) if n is 2 or more, At least two turns at five pitch intervals from where b = (14-n); And
Connecting the coil to a {24- (n-1)} commutator segment;
And the coil winding of the motor for direct current motor.

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