KR101954532B1 - Winding Structure for Brush DC Motor - Google Patents

Abstract

The present invention relates to a winding structure of a direct current commutator motor, comprising: a core (10) having K teeth (T) radially formed; a commutator (20) coupled to an upper portion of the core (10) and having K commutator pieces (C); a shaft (30) penetrated by the core (10) and the commutator (20) to be coupled thereto and to rotate together; and a plurality of magnets (40) installed to face the core (10). The K teeth (T) are first to K^th teeth (T1 to TK) sequentially, and the K commutator pieces (C) are first to K^th commutator pieces (C1 to CK), wherein K is an even number greater than or equal to 16. A coil connected to a commutator piece which is a starting point is primarily wound in [S(n), S(n+4)] and secondarily wound in [S(n+9), S(n+13)], and the coil after the secondary winding repeatedly goes through a winding process of being connected to a commutator piece which is a waypoint in a reverse direction and being connected to a commutator piece which is an end point, wherein n is a natural number from 1 to 18 and a remainder value obtained by dividing an excessive value by K when values of (n), (n+4), (n+9), (n+13) exceed K.

Description

Technical Field [0001] The present invention relates to a winding structure of a DC commutator motor,

The present invention relates to a motor. More particularly, the present invention relates to a winding structure of a DC commutator motor that can reduce the winding amount of a coil to help reduce the size and weight of the motor, and to improve the output and efficiency of the motor.

Generally, a DC commutator motor is used as a motor for a vehicle. In such a motor, the commutator and the core are coupled to the rotating shaft, and the coil is wound on the cores of the core according to a predetermined pattern and is connected to the commutator of the commutator.

Such a DC commutator motor is disclosed in U.S. Patent No. 8,378,547. This prior art discloses a winding pattern that continuously winds coils in nine slots facing each other in a motor having 18 slot and 18 commutator segments. Here, the coils are wound in nine slots and divided into two coil groups, the first coil group is wound in the forward direction and the second coil group is wound in the reverse direction. By presenting the winding pattern in which the two groups are adjacent to each other, Thereby reducing the ripple torque and improving the workability of the coil wiring.

However, in the prior art described above, since the number of slots of the coil is somewhat large and the two consecutive groups are adjacent to each other, the group to be simultaneously energized is concentrated in the nine consecutive slots. Therefore, There is a limit. Further, since the winding amount of the coil is continuously wound in the forward direction and the reverse direction, the coil winding is concentrated, which has a limitation in reducing the amount of coil winding.

Accordingly, the present inventors propose a DC commutator motor having a new winding structure in order to solve the above-mentioned problems.

An object of the present invention is to provide a winding structure of a DC commutator motor capable of reducing a winding amount of a coil to achieve miniaturization and weight reduction of a motor.

Another object of the present invention is to provide a winding structure of a motor which is advantageous for improving the output of the motor and increasing the efficiency by dispersing the groups to which the coils are simultaneously energized.

The above and other objects of the present invention can be achieved by the present invention described below.

The winding structure of the DC commutator motor according to the present invention

A core 10 having radially K teeth T formed thereon, a commutator 20 coupled to an upper portion of the core 10 and having K commutator segments C, a core 10 and a commutator 20, And a plurality of magnets (40) installed so as to face the core (10), the winding structure of the DC commutator motor comprising:

Wherein the K pieces of teeth (T) are first to Kth teeth (T1 to TK) in order and the K pieces of commutator pieces are first to Kth commutator pieces (C1 to CK) 16 or more even number)

The coil connected to the commutator segment which is the starting point becomes the primary winding at [S (n), S (n + 4)] and then the secondary winding at [S (n + 9) (N is a natural number of 1 to 18, and n is a natural number, and n is a natural number, and n is a positive integer). ), (n + 4), (n + 9), and (n + 13) exceeds K, the residual value is obtained by dividing the exceeded value by K.

In the present invention, it is preferable to repeat the winding process by (K / 2) times.

In the present invention, it is preferable that the number of half of the commutator pieces is not a starting point end point but a lightening point.

In the present invention, it is preferable that a pair of brushes provided so as to be in contact with the commutator 20 form an angle of 90 degrees.

In the present invention, it is preferable that the number of poles of the magnet is four poles.

According to the present invention, it is possible to reduce the amount of coils wound on the motor, thereby making it possible to reduce the size and weight of the motor and to disperse two groups of windings in one winding process so that simultaneous energization is possible, The DC commutator motor according to the present invention is provided.

1 is a side view showing a rotor of a DC commutator motor according to the present invention.
2 is a plan view of a DC commutator motor according to the present invention.
3 is a winding pattern diagram of a DC commutator motor according to the present invention.
4 is a plan view showing one winding process of the DC commutator motor according to the present invention.
5 is a winding table of a DC commutator motor according to the present invention.

FIG. 1 is a side view showing a rotor of a DC commutator motor according to the present invention, and FIG. 2 is a plan view of a DC commutator motor according to the present invention. 1 and 2, a DC commutator motor according to the present invention includes a core 10, a commutator 20, a shaft 30, and a magnet 40. As shown in FIG.

The core 10 has a plurality of radially formed teeth T and the surface of the core 10 is generally insulated with an insulating coating, an insulating molded article or an insulating film or the like, and then a coil (not shown) do. The coils are connected to the commutator 20 while being wound on the coils according to a predetermined pattern. The commutator 20 is composed of a plurality of commutator pieces C and each commutator piece C has a riser R formed by protruding. The coil is connected to the riser R and fixed by a method such as fusing. In this specification, "the coil is connected to the commutator segment (C)" means that the wire is connected to the riser (R) of the commutator segment (C).

The shaft 30 is a portion that serves as a rotating shaft of the motor, and the shaft 30 is coupled to the core 10 and the commutator 20. A magnet (40) is positioned facing the tooth (T) on the radially outer side of the core (10). In the motor according to the present invention, a magnet 40 is attached to an inner circumferential surface of a housing (not shown), and the shaft 30 is supported by bearings (not shown) provided at the top and bottom of the housing. One or two pairs of brushes (not shown) are arranged to contact the commutator 20 at a predetermined angle. Usually the angle of a pair of brushes is 90 degrees. Such a structure such as a housing, a bearing, a brush, and the like is obvious to those skilled in the art, so that the illustration is omitted in this specification.

Although the magnet 40 of the present invention is shown as four poles in FIG. 2, the present invention is not limited thereto and may be applied to various poles such as four poles or six poles.

In the present invention, the number of the commutator segments C and the number of teeth T is 18 as shown in Fig. 18 first to 18th commutator segments C1 to C18 are arranged in a counterclockwise direction in a plan view and 18 first to 18th teeth T1 to T18 are also arranged in the order of 18 commutator segments C1 to C18, C18 in the counterclockwise direction (forward direction). That is, each tooth is positioned with the same phase angle as the corresponding commutator element. For example, when the phase angle of the line connecting the first tooth T1 and the center of the shaft is 0 degree, the phase angle of the second tooth T2 is 360/18 = 20 degrees. The phase angle of the second commutator segment C2 is also 20 degrees, which is the same as the second tooth T2. In the present specification, the forward direction refers to the direction in which the teeth or commutator number increases, and the reverse direction refers to the direction in which the number of the teeth or commutator number decreases. However, the direction from the 18th tooth T18 or the 18th commutator C1 to the first tooth T1 or the first commutator segment C1 is exceptionally reduced, but the direction is defined as a forward direction.

The space between the tooth and the tooth becomes the slot S. As a coil is drawn or drawn into the slot S, the winding is wound on the tooth T. A slot between the first tooth T1 and the second tooth T2 is defined as a first slot S1 and the slots are numbered in the counterclockwise direction so that the 18th teeth T18 and the 1st teeth And the slot of T1 is the 18th slot (S18).

3 is a winding pattern diagram of a DC commutator motor according to the present invention, and is a plan view showing one winding process. The winding pattern of the present invention will be described with reference to FIG.

First, the coil 50 started to be connected to the first commutator segment C1 advances in the reverse direction to enter the eighth slot S8 and to be drawn out to the twelfth slot S12 by the first winding number N1 It is repeatedly wound to the ninth through twelfth teeth T9 through T12 and again travels in the forward direction to enter the seventeenth slot S17 and to be drawn out to the third slot S3 by the second winding number N2 And wound around the 18th to third teeth T18 to T3. Then, the coil drawn in the third slot S3 advances in the reverse direction to be connected to the eleventh commutator segment C11, and then to the second commutator segment C2 in the reverse direction. Thus, the respective tooth groups to which the first winding N1 and the second winding N2 are wound are dispersed to each other. The process described so far is referred to as a first winding process, and the first winding process may be referred to FIG.

The following second winding process starts from the coil 50 connected in the second commutator segment C2. Thereafter, the coil 50 advances in the reverse direction to enter the 18th slot S18 and to be drawn out to the fourth slot S4 by repeating the first winding number N1 to form the first through fourth teeth T1 through T4 And again advances in the forward direction to enter the ninth slot S9 and to be drawn out to the thirteenth slot S13 is repeated by the second winding N2 to form the tenth to thirteenth teeth T10 to T13, Lt; / RTI > Thereafter, the coil drawn in the thirteenth slot S13 advances in the reverse direction to be connected to the third commutator segment C3, and then travels in the reverse direction to be connected to the twelfth commutator segment C12.

The following is the third reel process. The coil 50 connected and started in the twelfth commutator segment C12 proceeds in the reverse direction and is drawn into the first slot S1 and drawn out to the fifth slot S5 by the first winding number N1 Is wound on the second to fifth teeth T2 to T5 and again travels in the forward direction to enter the tenth slot S10 and to be drawn out to the fourteenth slot S14 by the second winding number N2, 11 to 14th teeth (T11 to T14). Then, the coil drawn in the 14th slot (S14) advances in the reverse direction to connect to the fourth commutator segment (C4), and then to the 13th commutator segment (C13) in the reverse direction.

The following fourth winding process starts from the coil 50 connected in the thirteenth commutator segment C13. Thereafter, the coil 50 advances in the reverse direction and is drawn into the second slot S2 and is drawn out to the sixth slot S6 by the first winding number N1 to form the third to sixth teeth T3 to T6 And then proceeds again in the forward direction to enter the eleventh slot S11 and to be drawn out to the fifteenth slot S15 is repeated for the twelfth to fifteenth teeth T12 to T15 by the second winding N2, Lt; / RTI > Then, the coil drawn in the fifteenth slot (S13) proceeds in the reverse direction to connect to the fifth commutator segment (C5), then travels in the reverse direction and is connected to the fourteenth commutator segment (C14).

Next, in the fifth winding process, the coil 50, which is connected and started at the fourteenth commutator segment C14, travels in the reverse direction to be drawn into the third slot S3 and drawn out to the seventh slot S7, It is repeatedly wound on the fourth to seventh teeth T4 to T7 by the number of turns N1 and again travels in the forward direction to enter the twelfth slot S12 and to be drawn out to the sixteenth slot S16, Is repeatedly wound on the thirteenth through sixteenth teeth T13 through T16 as many times as the player N2. Thereafter, the coil drawn in the 16th slot (S16) proceeds in the reverse direction to connect to the sixth commutator segment (C6), and then to the fifteenth commutator segment (C15) in the reverse direction.

The following sixth winding process starts from the coil 50 connected in the fifteenth commutator segment C15. Thereafter, the coil 50 advances in the reverse direction to enter the fourth slot S4 and to be drawn out to the eighth slot S8 is repeated for the first winding number N1 and the fifth to eighth teeth T5 to T8 And again travels in the forward direction to enter the thirteenth slot S13 and to be drawn out to the seventeenth slot S17 is repeated for the second winding N2 to form the fourteenth to seventeenth teeth T14 to T17, Lt; / RTI > Thereafter, the coil drawn in the seventeenth slot S17 proceeds in the reverse direction to connect to the seventh commutator element C7, and then travels in the reverse direction to be connected to the sixteenth commutator element C16.

The following is the 7th reel process. The coil 50 started to be connected in the sixteenth commutator segment C16 proceeds in the reverse direction to be drawn into the fifth slot S5 and drawn out to the ninth slot S9 by the first winding number N1 It is wound on the sixth to ninth teeth T6 to T9 and again travels in the forward direction to enter the fourteenth slot S14 and to be drawn out to the eighteenth slot S18 by the second winding number N2 15th to 18th teeth (T15 to T18). Then, the coil drawn in the 18th slot (S18) proceeds in the reverse direction to connect to the eighth commutator segment (C8), and then to the seventeenth commutator segment (C17) in the reverse direction.

The following eighth winding process starts from the coil 50 connected in the seventeenth commutator segment C17. Thereafter, the coil 50 advances in the reverse direction and is drawn into the sixth slot S6 and drawn out to the tenth slot S10 by repeating the first to Nth turns to form the seventh to tenth teeth T7 to T10 And again advances in the forward direction to enter the fifteenth slot S15 and to be drawn out to the first slot S1 is repeated by the second winding N2 to form the sixteenth to the first teeth T16 to T1, Lt; / RTI > Thereafter, the coil drawn in the first slot S1 advances in the reverse direction and is connected to the ninth commutator segment C9, and then travels in the reverse direction and is connected to the eighteenth commutator segment C18.

Next, in the ninth winding process, the coil 50 started to be connected in the eighteenth commutator segment C18 proceeds in the reverse direction to enter the seventh slot S7 and to be drawn out to the eleventh slot S11, It is repeatedly wound on the eighth to eleventh teeth T8 to T11 by the number of turns N1 and again drawn in the forward direction to enter the sixteenth slot S16 and drawn out to the second slot S2, Is repeatedly wound on the seventeenth to second teeth T17 to T2 as many times as the player N2. Thereafter, the coil drawn in the second slot S2 proceeds in the reverse direction to connect to the tenth commutator element C10, and then to the first commutator element C1 in the reverse direction.

In the first to ninth winding processes, the first winding N1 and the second winding N2 are not particularly limited, but preferably the first winding N1 and the second winding N2 are It is preferable to have the same value. Also, the first to ninth winding processes may be started in any winding process irrespective of the order of the numbers. A winding table shown in Fig. 5 is a table of the winding patterns described up to this point.

The present invention is not limited to the winding pattern shown in Fig. Further, the present invention is not limited to the motor having 18 slots and 18 commutator segments shown in Figs. However, the number of slots and the number of commutator pieces should be the same, and the number thereof is preferably an even number. Since the primary and secondary windings in each winding process must satisfy the following conditions, the number of slots is 16 or more desirable. For example, the present invention is also applicable to motors having 24 slots and commutator segments.

[Condition]

(1) The number of slots and commutator pieces is K (K is an even number of 16 or more).

(2) The coil connected to the commutator segment as the starting point becomes the primary winding at [S (n), S (n + 4)], It becomes the secondary winding. Here, n is a natural number from 1 to 18, and when the value of (n), (n + 4), (n + 9), (n + 13) exceeds K, the remainder .

(3) After the secondary winding, the coil is connected to the commutator segment in the opposite direction to the commutator segment and then to the commutator segment in the reverse direction to the end point.

(4) The winding process of (2) and (3) above is repeated K / 2 times, but the number of half of commutator's pieces is not the starting point end point.

The above conditions will be described by applying to the embodiments shown in FIG. 2 and FIG. 3 as follows.

(1) The number of slots and commutator pieces is 18 pieces.

(2) The coil connected to the commutator segment as the starting point becomes the primary winding at [S (n), S (n + 4)], It becomes the secondary winding. Here, n is a natural number of 1 to 18. (n + 4), (n + 9) and (n + 13) exceeds 18, the residual value obtained by dividing the exceeded value by 18 is regarded as the remaining value.

(3) After the secondary winding, the coil is connected to the commutator segment in the opposite direction to the commutator segment and then to the commutator segment in the reverse direction to the end point. The winding process of (2) and (3) is repeated as shown in the table of FIG.

(4) The winding process is carried out nine times. Among them, C3 to C11 are not the starting point or the ending point of each winding process but become the lightening point.

It is to be understood that the invention has been described by way of example only, and that the scope of the invention is not limited thereto. 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: core 20: commutator
30: shaft 40: magnet
50: coil

Claims (5)

A core 10 having radially K teeth T formed thereon, a commutator 20 coupled to an upper portion of the core 10 and having K commutator segments C, a core 10 and a commutator 20, And a plurality of magnets (40) installed so as to face the core (10), the winding structure of the DC commutator motor comprising:
Wherein the K pieces of teeth (T) are first to Kth teeth (T1 to TK) in order and the K pieces of commutator pieces are first to Kth commutator pieces (C1 to CK) 16 or more even number)
The coil connected to the commutator segment which is the starting point becomes the primary winding at [S (n), S (n + 4)] and then the secondary winding at [S (n + 9) After the secondary winding, the coils are connected in reverse to the commutator segment, which is a diesel point, and then connected to the commutator segment, which is an end point, where n is a natural number of 1 to 18, (n + 4), (n + 9), and (n + 13) exceeds K,
K = 18, the winding process is performed according to the winding table below,
Wherein the number of half of the commutator pieces is a light-duty point that is not a starting point end point.

delete delete The DC-commutator motor winding structure according to claim 1, wherein a pair of brushes provided so as to contact the commutator (20) form an angle of 90 degrees. The DC-commutator motor winding structure according to claim 1, wherein the number of poles of the magnet is four poles.

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