Stator and motor equipped with same

Abstract

To prevent exposure of coil by over-molding.SOLUTION: A stator has a stator core, an insulator, a coil wound on the insulator, and a molding part disposed to cover the stator core, the insulator, and the coil. In the insulator, a first insulator includes a first outer guide extending from outside of a body part in a vertical direction, a second outer guide, and a protrusion protruding inward from the second outer guide. An end of the protrusion is disposed so that the first outer guide may form a predetermined gap G. A portion of the coil is disposed between the first outer guide and the second outer guide through the gap G. Thus, it can be prevented that the coil contacts with a housing by injection pressure at the time of over-molding of the stator.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The embodiment relates to a stator and a motor including the same. [Background technology]

[0002] A motor is a device that converts electrical energy into mechanical energy to obtain rotational force. It is widely used in vehicles, home electronics, industrial equipment, etc.

[0003] The motor consists of a housing, a shaft, and a The stator is placed inside the rotor, and the rotor is placed on the outer surface of the shaft. The stator of the motor may include a rotor. The rotor is rotated by inducing an electrical interaction with the magnet. The shaft also rotates accordingly.

[0004] In particular, the motor is used in a device for ensuring the safety of steering of a vehicle. For example, the motor may be an electronic steering system (EPS). The present invention can be used in motors for vehicles such as power steering systems.

[0005] The motor may also be used in a clutch actuator.

[0006] The transmission of a car responds to the clutch operation of the user. A transmission that is either passively operated depending on the speed or automatically operated by the transmission and comprising a motor.

[0007] Such motors may be placed in environments where they are exposed to fluids such as oil.

[0008] As a result, in the case of the stator of the motor, a molding is used to insulate the coil. The molded product can be manufactured by injection molding using a material such as acrylic.

[0009] The stator is made by first injection to form an insulator on the stator core and then injection. After winding the coil on the insulator, the secondary injection is done to overmold it. It can be formed.

[0010] However, during the secondary injection, the wire wound on the insulator is damaged by the injection pressure. In response to this, the exposed coil is exposed to the housing. , creating the possibility of a short circuit.

[0011] Therefore, when the secondary injection is performed, an additional The forming process is performed in order to improve production costs. There is a problem. Summary of the Invention [Problem to be solved by the invention]

[0012] The embodiment is a stator and a coil that prevent exposure due to overmolding. and a motor including the same.

[0013] The problems to be solved by the present invention are not limited to the problems described above. Other problems that were not solved will be clearly understood by those skilled in the art from the following description. cormorant. [Means for solving the problem]

[0014] The above problem is solved by the embodiment of the present invention, which is to provide a yoke and a plurality of protruding portions protruding from the inner surface of the yoke. A stator core including a number of teeth and an insulator surrounding a portion of the stator core. A coil wound on the insulator, the stator core, the insulator, a molding portion disposed to cover the insulator and the coil, The insulator includes a first insulator and a second insulator arranged along a circumferential direction. a first insulator, the first insulator being a body around which the coil is wound; a guide portion extending vertically from the inside of the body portion; A first outer guide extends in a perpendicular direction from the outside, and a space is provided between the first outer guide and the outer a second outer guide disposed adjacent to the first outer guide; The first outer guide includes a protrusion protruding from the first outer guide, and an end of the protrusion is spaced from the first outer guide by a predetermined gap G. A portion of the coil passes through the gap G and contacts the first outer coil. This is achieved by a stator disposed between the first outer guide and the second outer guide. , the coil may be disposed at the bottom of the protrusion.

[0015] Here, the radial width W1 of the protrusion is 0.6 times or more the outer diameter of the coil. It is possible.

[0016] The circumferential width W2 of the protrusion may be equal to or greater than twice the outer diameter of the coil. do.

[0017] The insulator includes the first outer guide and the second outer guide. a connecting portion disposed on the yoke and extending from the connecting portion A height H from the coil to the protrusion may be three times or more the outer diameter of the coil.

[0018] Meanwhile, the stator further includes a terminal connected to an end of the coil. The second insulator has a body portion on which the coil is wound, a first outer guide extending in a perpendicular direction from the outer side of the first outer guide; a second outer guide disposed at a distance from the inner side of the body portion and extending in a vertical direction; The inner guide includes an inner guide, and one side of the terminal is coupled to an upper end of the inner guide. A groove may be formed.

[0019] Here, the terminal includes a terminal body, a pin portion protruding from the bottom surface of the terminal body, a protrusion portion protruding from the bottom surface of the terminal body, and The protrusion includes a front end and a rear end. The front end includes a front end and a rear end. It can be coupled to a recording groove.

[0020] In addition, the first insulators are arranged between three of the first insulators in the circumferential direction. Two insulators may be arranged.

[0021] The insulator is disposed on the stator core by an injection molding method. Then, the mold die may be wound with the coil wound around the insulator. The molding part may be formed by an injection molding method.

[0022] The object of the present invention is to provide a rotor that rotates in combination with a shaft. a rotor and a stator disposed outside the rotor, the stator comprising: A stator core, an insulator surrounding a part of the stator core, and the insulator A coil wound on the stator core, the insulator and the and a molding portion disposed to cover the coil, The insulator includes a first insulator and a second insulator, The rotor is a body portion on which the coil is wound, and is wound in a direction perpendicular to the inside of the body portion. The first outer guide extends perpendicularly from the outside of the body. a second outer guide disposed outwardly and spaced apart from the first outer guide; The second outer guide includes a protrusion protruding inward from the second outer guide, and an end of the protrusion is connected to the first outer guide. The coils are arranged so as to form a predetermined gap G, and a part of the coil is located at the gap G. This is achieved by a motor disposed between the first outer guide and the second outer guide. It is done.

[0023] Here, the insulator is primarily attached to the stator core by injection molding. After being formed, the mold is wound with the coil around the insulator. The molding part can be formed secondarily by injection molding.

[0024] At this time, a portion of the coil is disposed between the first outer guide and the second outer guide. The regions can be arranged. Effect of the Invention

[0025] The stator and the motor including the stator according to the embodiment having the above configuration are By using a second outer guide and a protrusion protruding inward from the second outer guide, The coil is exposed to the outside of the molding due to the injection pressure during overmolding. This can prevent the above from happening.

[0026] The various and beneficial advantages and effects of the embodiments are not limited to those described above, but may be varied in accordance with the specifics of the embodiments. This will become more easily understood in the course of describing specific embodiments. [Brief description of the drawings]

[0027] [Figure 1] FIG. 1 shows a motor according to an embodiment;

[0028] [Diagram 2] FIG. 2 is a perspective view showing a stator according to an embodiment;

[0029] [Diagram 3] 1 is a side view showing a stator according to an embodiment; FIG.

[0030] [Figure 4] 4 is a cross-sectional perspective view showing the line AA in FIG. 3;

[0031] [Diagram 5] FIG. 1 is a perspective view showing a stator from which a molding portion is removed, in a stator disposed in a motor according to an embodiment;

[0032] [Figure 6] FIG. 2 is a plan view showing a stator in which a molding portion is removed in a stator disposed in a motor according to an embodiment;

[0033] [Figure 7] 6 , an enlarged view of region A in FIG.

[0034] [Figure 8] FIG. 2 is a diagram showing an insulator of a stator disposed in a motor according to an embodiment;

[0035] [Figure 9] FIG. 4 is a side view showing a first insulator of a stator disposed in a motor according to an embodiment;

[0036] [Figure 10] 4 is a diagram showing a terminal of a stator disposed in a motor according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0037] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0038] However, the technical concept of the present invention is not limited to some of the embodiments described. The present invention can be embodied in various different forms without departing from the spirit and scope of the present invention. Among the components between the examples, one or more may be selectively combined or substituted for use.

[0039] In addition, the terms (including technical and scientific terms) used in the embodiments of the present invention are Obviously, unless otherwise specifically defined and described, those skilled in the art to which the present invention pertains The meaning of the term can be interpreted as being commonly understood by those who use the term and is not limited to the definitions in a dictionary. Such commonly used terms should be interpreted in light of the context of the relevant art. It will be possible.

[0040] Furthermore, the terms used in the embodiments of the present invention are intended to describe the embodiments. However, they are not intended to limit the invention.

[0041] In this specification, the singular form "a," "an," "the," "the," and "the" can also include the plural form unless the phrase specifically states otherwise. In the case where it is described as "A and (and) at least one (or more) of B and C" In this case, it may include one or more of all combinations of A, B, and C.

[0042] In addition, in describing the components of the embodiment of the present invention, first, second, A, B, ( Terms such as a) and (b) can be used.

[0043] These terms are used to distinguish one component from another, The terminology is not intended to limit the nature, order, or sequence of the components.

[0044] And a component is "connected," "coupled," or "connected" to another component. When described as "connected," the component is directly connected, bonded, or joined to the other component. Not only when the component is connected to other components, but also when it is connected to other components This also includes cases where something is "coupled," "coupled," or "connected" by an element.

[0045] Also, what is formed or placed "above or below" each component When written as , above or below indicates that the two components are directly adjacent to each other. Not only when they come into contact, but also when one or more other components form or are formed between the two components. Also, when it is expressed as "above" or "below", it is 1 The term may refer not only to an upward direction but also to a downward direction based on one component.

[0046] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. Regardless of the above, identical or corresponding components will be given the same reference numerals and redundant discussion therein will be made. The explanation will be omitted.

[0047] FIG. 1 is a diagram showing a motor according to an embodiment. In FIG. 1, the x direction is the axis The axial direction may refer to the x direction, and the y direction may refer to the radial direction. Here, the axial direction may be the length direction of the shaft 300.

[0048] Referring to FIG. 1, the motor 1 according to the embodiment includes a stator according to the embodiment. 100, a rotor 200 disposed inside the stator 100, a shaft 300, and and a housing 400. Here, the inside is the area facing the center C with respect to the radial direction. The outer side may mean the direction opposite to the inner side.

[0049] The motor 1 includes a bearing 1 that rotatably supports the shaft 300. May include 0.

[0050] The stator 100 and the rotor 200 induce an electrical interaction. When the interaction is induced, the rotor 200 rotates, which in turn rotates the shaft 300. The shaft 300 is a clutch transmission. In addition, the shaft 300 may be connected to a dual-clutch Dual-Clutch Transmission (DCT) n) to provide power to the dual clutch transmission. (DCT) is a single-plate clutch transformer that is installed in vehicles with conventional passive transmissions. Unlike a transmission, it can be equipped with two sets of clutches. A dual-clutch transmission (DCT) is a transmission that transmits power through one clutch in a 1, 3 1, 5th gear, and 2nd, 4th, and 6th gears are realized by the power transmitted through the remaining clutch. The dual clutch transmission (DCT) is a system that CT) can selectively receive the power of the shaft 300.

[0051] As shown in FIG. 1, the stator 100 is disposed outside the rotor 200. It can be done.

[0052] FIG. 2 is a perspective view showing a stator according to an embodiment, and FIG. FIG. 4 is a cross-sectional perspective view taken along line AA in FIG. 3; and FIG. In the stator disposed in the motor according to the embodiment, the molding portion is eliminated. FIG. 6 is a perspective view showing a stator disposed in a motor according to an embodiment. FIG. 7 is a plan view showing a stator from which a molding portion has been removed. FIG. 6 is an enlarged view of region A of FIG.

[0053] Referring to FIG. 2 to FIG. 7, the stator 100 includes a stator core 110. , an insulator 120 and an insulator 1 20, a coil 130 wound around the stator core 110, the insulator 120, and A molding part 140 is disposed to cover the coil 130. The connector 130 may include a terminal 150 electrically connected to an end of the connector 130 .

[0054] Here, the insulator 120 is attached to the stator core 110 by injection molding. In this way, the insulator 120 can be molded by injection molding. The coil 130 is attached to the insulator 120. In the wound state, the molding part 140 may be secondarily injection molded by an injection method. As the injection method, an insert injection method can be used.

[0055] The stator core 110 passes through the cylindrical yoke 111 and the center C of the yoke 111. Based on a virtual line (axial direction), the yoke 111 is arranged to protrude in the radial direction along the circumferential direction of the yoke 111. The rotor 2 may include a plurality of teeth 112 formed thereon. In this case, the teeth 112 may be 00 magnet.

[0056] As shown in FIG. 4, each of the teeth 112 faces the center C and is connected to the yoke 1. 11 may be disposed on the inner circumferential surface of the

[0057] As shown in FIG. 4, the tooth 112 is cut in the axial direction. The facets may be formed in a T-shape.

[0058] Therefore, the tooth 112 is an L-shaped tooth body and The present invention may include a shoe disposed at the end of the dee, the shoe being as shown in FIG. As shown in FIG. 1, the tooth body is formed so as to protrude from the end of the tooth body in the circumferential direction based on the center C. It is possible.

[0059] Meanwhile, the stator core 110 has a plurality of teeth 112 protruding in the radial direction. For example, the stator plate may be formed by stacking thin plate-like stator plates. The rotor plate is made by forming multiple silicon steel plates with a thickness of 0.35 to 0.5 mm into a specified shape. Then, a plurality of the stator plates are stacked to form a stator core 1. 10 can be formed.

[0060] The insulator 120 is attached to the stator core 110 by an insert injection method. The hologram may be arranged to encompass a region of the hologram.

[0061] The insulator 120 insulates the stator core 110 from the coil 130. Specifically, the insulator 120 is disposed between the teeth 11 of the stator core 110. 2 and the coil 130. Here, the insulator 120 is , may be made of a synthetic resin material.

[0062] FIG. 8 shows an insulator of a stator disposed in a motor according to an embodiment. This is a drawing.

[0063] Referring to FIG. 8, the insulator 120 includes a first insulator 120a. , second insulator 120b and third insulator 120c. As shown in FIG. 1, the second insulator 120a is disposed between the first insulators 120a in the circumferential direction. The first insulator 120a may be disposed on the first insulator 120b. Three may be provided.

[0064] Here, the first insulator 120a, the second insulator 120b, and The third insulator 120c is provided with or without a groove on the upper side of the inner guide and with or without a groove on the second outer They can be classified according to whether or not the guide has a protrusion.

[0065] The first insulator 120a, the second insulator 120b and the third insulator Each of the insulators 120c includes a body portion 121 on which a coil 130 is wound, a body An inner guide 122 protrudes from the inside of the body portion 121, and a The first outer guide 123 protrudes from the outside of the body portion 121. 3. In this case, the first outer guide 122 may include a second outer guide 124 disposed outwardly and spaced apart from the first outer guide 122. The guide 123 and the second outer guide 124 may be spaced apart from each other by a predetermined distance D. The distance D may be 1.6 to 2.0 times the outer diameter of the coil 130. The outer diameter of the coil 130 may be referred to as the wire size or diameter of the coil 130.

[0066] In addition, the first insulator 120a, the second insulator 120b and the Each of the insulators 120c is connected to a first outer guide 123 and a second outer guide 124. A connecting portion 124 is disposed between the first outer guide 123 and the second outer guide 124. 26 may be included.

[0067] FIG. 9 is a diagram illustrating a first insulator of a stator disposed in a motor according to an embodiment. FIG.

[0068] 8 and 9, the first insulator 120a is a body portion 1 21, an inner guide 122 protruding from the inside of the body part 121, and an outer guide 122 protruding from the outside of the body part 121 a first outer guide 123 protruding from the outside of the body portion 121; A second outer guide 124 is disposed on the outer side of the guide 123. The protrusion 125 protruding inward and connecting the first outer guide 123 and the second outer guide 124 are The connector 126 may include a connector 126.

[0069] The body portion 121 is disposed so as to enclose the tooth body of the tooth 112. A coil 130 can be wound around the body portion 121. A guide groove 121a for guiding the winding of the coil 130 may be formed on one side of the portion 121. .

[0070] The inner guide 122 is extended vertically from the inside of the body portion 121. At this time, the inner guide 122 is formed in such a manner that the inner guide 122 is axially extended from the inside of the body portion 121. and may be formed to protrude in the circumferential direction.

[0071] The inner guide 122 supports the coil 130 wound around the body portion 121. This can prevent the roller 130 from slipping off inward.

[0072] The first outer guide 123 extends in a vertical direction from the outside of the body portion 121. In this case, the first outer guide 123 may be formed so as to be extended from the outside of the body portion 121. The grooves may be formed to protrude axially and circumferentially therefrom.

[0073] The first outer guide 123 supports the coil 130 wound around the body portion 121. This can prevent the coil 130 from falling off to the outside.

[0074] The first outer guide 123 may be disposed on the upper or lower surface of the yoke 111. As a result, the first outer guide 123 is arranged to overlap the yoke 311 in the axial direction. It can be arranged.

[0075] The second outer guide 124 is spaced apart from the first outer guide 123 by a predetermined distance D. Here, the second outer guide 124 may be disposed from one radial side of the connecting portion 126. For example, the second outer guide 124 may be formed to extend in a vertical direction. It may be formed to protrude axially from the outside of portion 126 .

[0076] As shown in FIG. 6 and FIG. 7, the first outer guide 123 and the second outer guide 12 A region of the coil 130 wound in the circumferential direction may be disposed on the second outer The guide 124 is a second injection port for forming the molding part 140 with the molding material. This prevents the coil 130 from being exposed in the radial direction due to the injection pressure that occurs at the time.

[0077] Meanwhile, the second outer guide 124 may be disposed on the upper or lower surface of the yoke 111. As a result, the second outer guide 124 overlaps the yoke 311 in the axial direction. The components may be arranged as follows.

[0078] The protrusion 125 is disposed between the first outer guide 123 and the second outer guide 124. This can prevent a part of the coil 130 from being detached in the axial direction due to the injection pressure.

[0079] 6, 7 and 9, the protrusion 125 is disposed on the second outer guide 124. In this case, the end of the protrusion 125 may be formed to protrude inward from the radial direction. The portion is arranged so as to form a predetermined gap G with the outer surface 123a of the first outer guide 123. Thus, the coil 130 may be disposed on the first outer side through the gap G. The guide 123 and the second outer guide 124 may be inserted between the gap G may be equal to or slightly larger than the outer diameter of the coil 130. The outer surface 123a of the guide 123 is an inclined surface having a predetermined inclination angle with respect to the connecting portion 126. The present invention can be formed to have a

[0080] The end of the protrusion 125 may be rounded. The upper surface of the end side of the coil 125 is disposed between the first outer guide 123 and the second outer guide 124. 30 can be formed on a curved surface to insert the casing 30. This allows the casing 30 to be formed in an inclined manner with the curved surface. The coil 130 can be easily guided to the first outer guide 123 via the outer surface 123a of the first outer guide 123. It can be inserted between the side guide 123 and the second outer guide 124.

[0081] 7 and 9, the radial width W1 of the protrusion 125 is In this case, the width W1 is set by taking the gap G into consideration. It is formed.

[0082] Referring to FIG. 7, the circumferential width W2 of the protrusion 125 is twice the outer diameter of the coil 130. In this case, the width W2 of the protrusion 125 in the circumferential direction is equal to or larger than the width W2 of the second outer guide 124. This allows the coil 130 to rotate in the circumferential direction by the injection pressure. No cracks will occur due to the force pushing in the direction.

[0083] 7 and 9, the protrusion 125 is formed on the upper surface 126a of the connecting portion 126. The height H may be approximately three times the outer diameter of the coil 130. However, the height H may be smaller than the axial height of the second outer guide 124. Sai.

[0084] The connecting portion 126 is disposed on the first outer guide 123 and the second outer guide 124. The first outer guide 123 and the second outer guide 124 can be connected to each other.

[0085] The connecting portion 126 may be disposed on the yoke 111. , the coil 130 can be disposed. In this way, the connecting portion 126 is configured such that the yoke 111 is a coil Make sure to insulate it from 130.

[0086] Referring to FIG. 8, the second insulator 120b includes a body portion 121 and a body An inner guide 122a protruding from the inside of the body portion 121, and an inner guide 122b protruding from the outside of the body portion 121. a first outer guide 123 arranged in a direction parallel to the first outer guide 123 and a second outer guide 124 arranged outwardly and spaced apart from the first outer guide 123; side guide 124 and a connecting portion 1 connecting the first outer guide 123 and the second outer guide 124 26 may be included.

[0087] Comparing the second insulator 120b with the first insulator 120a, In the case of the second insulator 120b, the protrusion 125 is omitted and the inner guard There is a difference in the shape of id 122a.

[0088] In describing the second insulator 120b, The same components as those in FIG. 0a are denoted by the same reference numerals, and therefore detailed description thereof will be omitted. Omitted.

[0089] The inner guide 122a of the second insulator 120b is connected to the terminal 150. The inner guide 122a may include a groove 122b formed therein for coupling. The groove 122b may be formed in the inner guide 122a. As shown in FIG. 8, the groove 122b may be formed at the end of the inner guide 122a. Thus, one side of the terminal 150 is coupled to the groove 122b. It is possible.

[0090] Referring to FIG. 8, the third insulator 120c includes a body portion 121 and a body An inner guide 122 protrudes from the inside of the body portion 121, and a a first outer guide 123 protruding from the outside of the body portion 121; The second outer guide 124 and the first outer guide 123 are disposed outwardly from each other and spaced apart from each other. A connecting portion 126 may be included to connect the side guides 124 .

[0091] Comparing the third insulator 120c with the first insulator 120a, The third insulator 120c is a structure in which the protrusion 125 of the first insulator 120a is omitted. The difference is that they are formed by

[0092] Therefore, the insulator 120 of the motor 1 is a first insulator The first insulator 120a, the second insulator 120b and the third insulator 120c are arranged around the circumference of the In this case, the end of the coil 130 and the terminal 150 may be arranged in the direction of the arrow. In consideration of electrical connection, the second insulators 120a are arranged between the first insulators 120a in the circumferential direction. An insulator 120b is disposed.

[0093] The coil 130 can be wound around the body portion 121. At this time, the coil 130 is The placement can be guided by the guide groove 121a of the body portion 121. The end of the coil 130 disposed on the side of the portion 121 can be electrically connected to the terminal 150. do.

[0094] The coil 130 is disposed between the first outer guide 123 and the second outer guide 124. The coil may be arranged to be wound around the coil.

[0095] The molding section 140 includes the stator core 110, the insulator 120, and In particular, the molding portion 140 may be disposed to cover the body and the coil 130. The coils 130 may be disposed between the coils 130 wound around each of the portions 121. Accordingly, the two coils 130 arranged at a distance from each other are It can be insulated by 140.

[0096] When the stator is extruded, a number of teeth 112 are formed on the stator. The core 110 is placed inside a mold (not shown), and the insulator is molded by an insert injection method. The insulator 120 can be formed from a material such as resin, synthetic resin, or rubber. The cover may be made of one of rubber or urethane.

[0097] In particular, in the case of the expanded type stator core 110, when the stator core 110 is expanded, In this state, a first injection can be performed to form the insulator 120.

[0098] The stator core 110 on which the insulator 120 is injection molded has the following features: The coil 130 may be wound.

[0099] In particular, in the case of the expansion type stator core 110, the stator core 110 is expanded. After forming the insulator 120 in this state, the coil 130 can be wound. Through a rolling process, one side and the other side of the expanded stator core 110 are After being abutted, they may be welded to form a cylindrical shape.

[0100] After the rolling process is completed, the stator core 130 is wound. The molded portion 140 may be injection molded into the base 110. For example, the coil 130 may be wound The wired stator core 110 is placed inside a mold (not shown) and then molded by insert injection method. Here, the molding part 140 may be formed by The material may be any one of plastic, synthetic resin, rubber, and urethane.

[0101] That is, the stator 100 is first formed by injection molding the insulator 120. After that, the coil 130 is wound, and the molding part 140 is formed by the injection method. possible.

[0102] At this time, when the molding part 140 is injection molded, an injection pressure is applied to the coil 130. Even if the coil 130 is inserted, the coil 130 is exposed to the outside by the second outer guide 124 and the protrusion 125. This can prevent this from happening.

[0103] The terminal 150 is disposed so as to be electrically connected to one end of the coil 130. Therefore, the current flows through the terminal 150, which is partially exposed to the outside. This allows a current to flow through the coil 130, A rotating magnetic field is generated between the stator 100 and the rotor 200. The Turbine 200 will start rotating.

[0104] FIG. 10 is a diagram showing a terminal of a stator disposed in a motor according to an embodiment. It is a surface.

[0105] Referring to FIG. 10, the terminal 150 includes a terminal body 151, a terminal A pin portion 152 protruding in the axial direction from the upper surface of the null body 151, and a terminal body 15 1 and a protrusion 153 protruding in the axial direction from the bottom surface of the terminal body 151. The protrusions 153 may each include a bent portion 154 formed by bending the protrusions 153. The bent portion 154 can be coupled to the groove 122b. The end of the coil 130 is disposed in the bent portion 154. Therefore, the terminal 150 can be electrically connected to the coil 130. A part of the unit 152 is exposed to the outside and is connected to an external power supply unit (not shown) for applying a current from the outside. The present invention can be electrically connected to a

[0106] The rotor 200 may be disposed inside the stator 100 .

[0107] The rotor 200 has a rotor core (not shown) to which a magnet (not shown) is coupled. For example, the magnet may be arranged in a pocket provided in the rotor core. can be inserted and configured.

[0108] Alternatively, the magnet is attached to the outer circumferential surface of the rotor core to form the rotor 200. may be formed.

[0109] The rotor 200 can rotate in combination with the shaft 300. For example, the rotor 2 A shaft 300 can be coupled to the center portion of the .

[0110] A bearing 10 may be disposed on the outer circumferential surface of the shaft 300. Thus, the bearing 10 can be rotatably supported by the shaft 300 .

[0111] The housing 400 forms the outer shape of the motor 1 and determines the size of the motor 1. can be determined.

[0112] The housing 400 can accommodate the stator 100 and the rotor 200. That is, as shown in FIG. 1, the stator is disposed inside the housing 400. 100 and rotor 200 may be arranged.

[0113] Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will appreciate that Those skilled in the art will appreciate that the present invention does not depart from the spirit and scope of the invention as set forth in the following claims. It will be understood that the invention can be modified and changed in many ways within its scope. [Explanation of symbols]

[0114] 1: motor, 100: stator, 110: stator core, 111: yoke , 112: tooth, 120: insulator, 121: body part, 122: inner gusset id, 122b: groove, 123: first outer guide, 124: second outer guide, 125: protrusion , 130: coil, 140: molding part, 150: terminal, 200: rotor , 300: shaft, 400: housing

Claims

1. a stator core including a yoke and a plurality of teeth protruding from an inner surface of the yoke; an insulator surrounding a portion of the stator core; A coil wound on the insulator; and a molding portion disposed to cover the stator core, the insulator, and the coil; the insulator includes a first insulator and a second insulator; The first insulator a body portion around which the coil is wound; an inner guide extending axially from the inside of the body portion; a first outer guide extending axially from an outer side of the body portion; a second outer guide disposed outwardly and spaced apart from the first outer guide and extending axially from an outer side of the body portion; and a protrusion protruding inward from the second outer guide to form a predetermined gap (G) with the first outer guide; The body portion is disposed between the center (C) of the stator core and the protrusion based on the radial direction, A stator, wherein a portion of the coil disposed between the first outer guide and the second outer guide is disposed under the protrusion.

2. The stator of claim 1 , wherein said gap (G) does not circumferentially overlap said body portion.

3. The upper surface of the end of the protrusion is formed as a curved surface, The stator according to claim 1 , wherein an outer surface of the first outer guide is inclined.

4. The stator of claim 1 , wherein the protrusions are disposed outside the body portion.

5. The stator further includes a terminal connected to an end of the coil, The second insulator a body portion around which the coil is wound; a first outer guide extending axially from an outer side of the body portion; a second outer guide disposed outwardly and spaced apart from the first outer guide; and an inner guide extending axially from an inner side of the body portion; The stator of claim 1 , wherein an upper end of the inner guide is formed with a groove to which one side of the terminal is coupled.

6. The terminal Terminal body, A pin portion protruding from an upper surface of the terminal body; a protrusion protruding from a lower surface of the terminal body; The terminal body includes a bent portion formed by bending both sides of the terminal body, The protrusion is coupled to the groove, The stator according to claim 5 , wherein an end of a coil wound around the first insulator is connected to the bent portion.

7. The stator according to claim 1 , wherein the second insulator is disposed between three of the first insulators in a circumferential direction.

8. The stator according to claim 1 , wherein the insulator is disposed on the stator core by an injection method.

9. The stator according to claim 8 , wherein the molding part is formed by an injection molding method in a state where the coil is wound around the insulator.

10. shaft; a rotor coupled to said shaft for rotation; a stator disposed outside the rotor; The stator is Stator core, an insulator surrounding a portion of the stator core; A coil wound on the insulator; and a molding portion disposed to cover the stator core, the insulator, and the coil; the insulator includes a first insulator and a second insulator; The first insulator a body portion around which the coil is wound; an inner guide extending axially from the inside of the body portion; a first outer guide extending axially from an outer side of the body portion; a second outer guide disposed outwardly and spaced apart from the first outer guide and extending axially from an outer side of the body portion; and a protrusion protruding inward from the second outer guide to form a predetermined gap (G) with the first outer guide; The body portion is disposed between the center (C) of the stator core and the protrusion based on the radial direction, A motor, wherein a portion of the coil disposed between the first outer guide and the second outer guide is disposed under the protrusion.

11. shaft; a rotor coupled to said shaft for rotation; a stator disposed outside the rotor; The stator is Stator core, an insulator surrounding a portion of the stator core; A coil wound on the insulator; and a molding portion disposed to cover the stator core, the insulator, and the coil; the insulator includes a first insulator and a second insulator; The first insulator a body portion around which the coil is wound; an inner guide extending axially from the inside of the body portion; a first outer guide extending axially from an outer side of the body portion; a second outer guide disposed outwardly and spaced apart from the first outer guide and extending axially from an outer side of the body portion; a protrusion protruding inwardly from the second outer guide; and the insulator includes a connecting portion disposed between the first outer guide and the second outer guide, The lower portion of the protrusion is located at a predetermined height H from the connecting portion, A motor, wherein a portion of the coil disposed between the first outer guide and the second outer guide is disposed under the protrusion.

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