KR20160084694A - Motor - Google Patents

Abstract

A motor according to the present invention comprises: a stator including a stator core having a plurality of teeth and a winding space between the teeth, a coil wound around the teeth, and an insulator mounted on the teeth to insulate the coil from the stator core; a rotor disposed inside the stator; and a shaft coupled to the rotor. The insulator includes a mounting groove portion in which the coil is mounted. The mounting groove portion is asymmetrically disposed based on a radial baseline which passes the center of the tooth in the circumferential direction. Therefore, the motor of the present invention can reduce the number of components of the insulator while realizing an asymmetrical winding method.

Description

Motor {Motor}

The present invention relates to a motor, and more particularly, to a motor in which a coil is wound on an insulator mounted on a tooth of a stator.

In the case of a motor, a shaft rotatably formed, a rotor coupled to the shaft, and a stator fixed to the inside of the housing are provided, and a stator is provided with a gap along the circumference of the rotor. And a coil for forming a rotating magnetic field is wound around the stator to induce electrical interaction with the rotor to induce rotation of the rotor.

The stator may include a plurality of stator cores, and the stator core may be constructed by stacking steel sheets including a plurality of teeth. A winding space is formed between each tooth, and a coil is wound on each tooth. At this time, the insulator is attached to the teeth to insulate the coil and the stator coil.

Generally, in order to improve the performance of the motor, it is necessary to increase the coil winding or the coil diameter in the winding space. However, the winding space formed between the teeth of the stator is limited in size. In order to overcome such a spatial limitation, there is a winding method in which the winding form of the coil wound on the adjacent teeth is implemented asymmetrically.

However, in order to realize the asymmetrical winding method, the shapes of the adjacent insulators must be different from each other. Therefore, there is a problem that the kind of the insulator is increased. For example, in order to implement an asymmetrical winding scheme, an insulator having an upper insulator and a lower insulator inter-connected is required to have at least two upper insulators with different seating grooves of the coils, All three parts of the insulator are required.

Therefore, there is a problem that the manufacturing cost is increased due to the increase of the parts and the management becomes difficult, and the winding equipment is complicated.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a motor capable of reducing the number of parts of an insulator while implementing an asymmetrical winding method.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a stator including: a stator core including a plurality of teeth and including a winding space between the teeth; a coil wound around the teeth; And a shaft coupled to the rotor, wherein the insulator includes a seating groove portion on which the coil is seated, and the seating groove portion is formed with a circumferential direction as a reference. The stator includes a stator including an insulator It is possible to provide a motor which is arranged asymmetrically about a radial reference line passing through the center of the teeth.

Preferably, the seating groove portion includes a first pattern portion disposed on one side of the tooth and a second pattern portion disposed on the other side of the tooth about the radial baseline, The first pattern portion and the second pattern portion may be respectively mounted on the plurality of teeth so as to be alternately arranged.

Preferably, the asymmetric induction section may be disposed between the seating grooves with respect to the radial direction in any one of the first pattern section and the second pattern section.

Preferably, the first pattern portion and the second pattern portion may include five seating recesses.

Preferably, the asymmetry inducing section may be disposed between a third seating groove portion and a fourth seating groove portion from the inside toward the inside, with respect to the radial direction of the five seating groove portions.

Preferably, the first seating groove portion, the second seating groove portion, and the third seating groove portion may be symmetrically arranged with respect to the radial basis line from the outside to the inside of the five seating groove portions.

Preferably, the width of the asymmetrical induction section may be smaller than the diameter of the coil.

Preferably, the insulator may be formed by combining an upper insulator and a lower insulator.

According to an embodiment of the present invention, one and the other sides of the seating groove portion of the insulator are configured to be asymmetric, and the first pattern portion and the second pattern portion of the asymmetric seating groove portion are alternately arranged along the circumferential direction, Thereby providing an advantageous effect of reducing the number of parts of the insulator while implementing the asymmetrical winding method.

1 shows a motor according to a preferred embodiment of the present invention,
Fig. 2 is a view showing the insulator of the motor shown in Fig. 1,
Fig. 3 is a view showing the winding state of the motor shown in Fig. 1,
Fig. 4 is a view showing a winding sequence of the motor shown in Fig. 1,
5 is a view showing an upper insulator and a lower insulator.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages, and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary terms and the inventor should properly define the concept of the term in order to describe its own invention in the best way. The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

1 is a view showing a motor according to a preferred embodiment of the present invention.

Referring to FIG. 1, a motor according to an embodiment of the present invention may include a stator 100, a rotor 200, and a shaft 300.

The stator 100 may include a plurality of stator cores 110. In one embodiment, the stator core 110 includes an annular yoke portion, a plurality of steel plates disposed along the circumferential direction and including portions of the teeth projecting radially inwardly from the yoke at regular angular intervals Lt; / RTI > The coil 120 forming the rotating magnetic field can be wound on this tooth. At this time, the coil 120 can be insulated through the insulator 130.

The insulator 130 is coupled to the upper and lower sides of the stator core 110 to insulate the coils 120 wound on the teeth from energizing the stator core 110. The insulator 130 may be formed of a resin material.

The rotor 300 is disposed inside the stator 200. The rotor 300 may be constructed by coupling a magnet to the rotor core, and in some cases, the rotor core and the magnet may be integrally formed. The rotor 300 may also be of a type in which the magnet is coupled to the outer circumferential surface of the rotor core, or may be of a type in which the magnet is inserted into the pocket of the rotor core. A sensing magnet for acquiring position information of the rotor 300 may be coupled to the plate or a similar rotor position sensing means may be provided on the rotor 300.

When a current is supplied to the coil wound around the stator 100, electrical interaction with the rotor 200 is induced to induce rotation of the rotor 200. When the rotor 200 rotates, the shaft 300 rotates to provide power.

Fig. 2 is a view showing the insulator of the motor shown in Fig. 1. Fig. It is to be noted that, in order to clearly understand the present invention, FIG. 2 clearly shows only the main feature parts, and as a result various variations of the illustrations are expected, and the scope of the present invention is limited There is no.

Referring to FIG. 2, the insulator 130 may be mounted on the teeth 111 protruding from the stator core 110. The insulator 130 serves to insulate the coil 120 from energization with the stator core 110.

The insulator 130 is provided with a seating groove 140 in which the coil 120 is seated during the winding process. The seating groove portion 140 is recessed on the surface of the insulator 130 to guide the windings of the coil 120. The insulator 130 may be divided into two horizontally formed upper and lower surfaces and a vertically long side surface. The seating recess 140 may be formed on both sides of the insulator 130.

The size, spacing, and number of the seating grooves 140 may be differently set corresponding to the diameter and the winding of the coil 120.

On the other hand, the seating groove 140 may be arranged asymmetrically with respect to the radial direction reference line C in order to realize the asymmetrical winding method. Here, the radial direction reference line C refers to a virtual reference line formed in the radial direction passing through the center of the tooth 111 with respect to the circumferential direction.

The pattern of the seating grooves 140 disposed on one side of the tooth 111 of the seating groove 140 with respect to the radial direction reference line C is referred to as a first pattern portion 141, The pattern of the placement grooves 140 to be disposed is referred to as a second pattern portion 142.

The first pattern portion 141 and the second pattern portion 142 are asymmetric with respect to the radial direction reference line C as a reference. Specifically, as an example, the first pattern portion 141 and the second pattern portion 142 may have five seating groove portions 141a, 141b, 141c, 141d, and 141e, respectively. The first pattern portion 141 The asymmetric induction section 143 may be formed between the five seating grooves 141a, 141b, 141c, 141d, and 141e. The asymmetrical induction section 143 does not exist in the second pattern section 142 and means a flat section in which the seating groove is not formed in the surface of the insulator 130. The width of the asymmetric induction section 143 is smaller than the diameter of the coil 120.

The asymmetry inducing section 143 includes a third seating groove portion 141c and a fourth seating groove portion 141d from the outside to the inside of the five seating seating portions 141a, 141b, 141c, 141d, and 141e with respect to the radial direction. As shown in FIG.

The first, second, and third seating grooves 141a, 141b, 141c, 141d, and 141e are radially extending from the outside to the inside, C). ≪ / RTI >

Fig. 3 is a view showing the winding state of the motor shown in Fig. 1, and Fig. 4 is a diagram showing the winding order of the motor shown in Fig.

3 and 4, it can be seen that the positions of the wound coils 120 of the first pattern portion 141 and the second pattern portion 142 are different. Concretely, the winding operation is performed symmetrically around the radial direction reference line C starting from the start end to the first turn to the third turn, and the fourth turn and the fifth turn are performed by the asymmetrical induction section 143, 141 and the coil 120 of the second pattern portion 142 are changed. That is, a gap occurs in the first pattern portion 141 during the third turn and the fourth turn.

At this interval, the next layer coil 120 by six turns is wound and connected to the end terminal after 7 turns. The winding arrangement position of the next layer coil 120 due to the sixth turn is located outside the first pattern portion 141 with respect to the radial direction.

At this time, since the insulator 130 is mounted on the teeth 111 so that the first pattern portion 141 and the second pattern portion 142 are alternately arranged with respect to the circumferential direction, the mutually adjacent teeth 111A and 111B The winding state is asymmetrical and the drop rate of the coil 120 can be increased when the reference line L is formed in the radial direction passing through the center of the circumferential direction of the winding space formed between the adjacent winding coils.

That is, since the first pattern portion 141 and the second pattern portion 142, which are different in the position of the seating groove portion 140, are disposed to face each other in all the winding spaces formed between the teeth 111, It is possible to implement asymmetrically the winding method using only one type of insulator 130 having the pattern portion 141 and the second pattern portion 142 different from each other.

5 is a view showing an upper insulator and a lower insulator.

Referring to FIG. 5, the insulator 130 may include an upper insulator 130A and a lower insulator 130B, which are coupled to each other. It is possible to implement asymmetrically the winding method as described above by mounting the same upper insulator 130A and lower insulator 130B to two mutually adjacent teeth 111A and 111B unlike the related art.

That is, in the prior art, two lower insulators 130B are mounted on two teeth 111A and 111B to realize an asymmetrical winding, and two upper insulators 130A having different seating grooves are formed on each lower insulator 130B. Respectively. Therefore, all three kinds of insulator parts were required because the asymmetric winding method was implemented. However, since the insulator 130 of the present invention can realize the asymmetrical winding method using only two kinds of insulator parts composed of the upper insulator 130A and the lower insulator 130B, there is an advantage that the number of parts can be reduced

As described above, the motor according to one preferred embodiment of the present invention has been specifically described with reference to the accompanying drawings.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100:
110: stator core
111: Teeth
120: Coil
130: Insulator
140: seat groove
141: first pattern portion
142: second pattern portion
143: Asymmetry inducing section
200: Rotor
300: shaft

Claims (8)

A stator core including a plurality of teeth and including a winding space between the teeth; a coil wound around the teeth; and an insulator mounted on the teeth, the insulator insulating the coil and the stator core from each other;
A rotor disposed inside the stator;
A shaft coupled to the rotor,
Wherein the insulator includes a seating groove portion on which the coil is seated, and the seating groove portion is asymmetrically disposed about a radial reference line passing through the center of the tooth with respect to a circumferential direction. The method according to claim 1,
Wherein the seating groove portion includes a first pattern portion disposed on one side of the tooth with respect to the radial direction reference line and a second pattern portion disposed on the other side of the tooth, And the second pattern portions are respectively mounted on the plurality of teeth so as to be alternately arranged. 3. The method of claim 2,
Wherein the asymmetric induction section is disposed between the seating recesses with respect to the radial direction in any one of the first pattern section and the second pattern section. The method of claim 3,
Wherein the first pattern portion and the second pattern portion comprise five seating groove portions. 5. The method of claim 4,
Wherein the asymmetric induction section is disposed between a third seating groove portion and a fourth seating groove portion from the outside to the inside, with respect to a radial direction of the five seating groove portions. 6. The method of claim 5,
Wherein the first seating groove portion, the second seating groove portion, and the third seating groove portion are disposed symmetrically with respect to the radial basis line from the outside to the inside of the five seating groove portions. 6. The method of claim 5,
Wherein a width of the asymmetric induction section is smaller than a diameter of the coil. The method according to claim 1,
Wherein the insulator is a combination of an upper insulator and a lower insulator.

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