KR20120139093A - Stator core and spindle motor having the same - Google Patents

Stator core and spindle motor having the same Download PDF

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Publication number
KR20120139093A
KR20120139093A KR1020110058662A KR20110058662A KR20120139093A KR 20120139093 A KR20120139093 A KR 20120139093A KR 1020110058662 A KR1020110058662 A KR 1020110058662A KR 20110058662 A KR20110058662 A KR 20110058662A KR 20120139093 A KR20120139093 A KR 20120139093A
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KR
South Korea
Prior art keywords
winding
coil
stator core
core
wound
Prior art date
Application number
KR1020110058662A
Other languages
Korean (ko)
Inventor
양경수
Original Assignee
삼성전기주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 삼성전기주식회사 filed Critical 삼성전기주식회사
Priority to KR1020110058662A priority Critical patent/KR20120139093A/en
Publication of KR20120139093A publication Critical patent/KR20120139093A/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

PURPOSE: A stator core and a spindle motor including the same are provided to insert a coil into a coil winding groove and to improve winding density. CONSTITUTION: A core back(120) is pressed and fixed to a fixing member. A teeth portion(140) is protruded in the external diameter direction of the core back. The teeth portion comprises a winding part(143) and a stopper(141). The winding part winds the coil(110). The stopper prevents the coil from being separated.

Description

STATE CORE AND SPINDLE MOTOR WITH THEREOF {STATOR CORE AND SPINDLE MOTOR HAVING THE SAME}

The present invention relates to a stator core and a spindle motor having the same.

In general, a spindle motor installed in a disk drive functions to rotate the disk so that the optical pickup mechanism can read data recorded on the disk.

Meanwhile, a disk drive is used in a portable multimedia device such as a notebook computer which can be carried and used anytime, anywhere, and accordingly, a manufacturer wants to achieve a thinner disk drive according to the miniaturization trend of a portable multimedia device.

The stator cores in most spindle motors installed in the disk drive use the electromagnetic force generated by winding a coil thereon and applying a current to the wound coil as a source of rotation torque of the spindle motor.

On the other hand, in order to make the disk drive thinner, manufacturers want to thin the spindle motor. Accordingly, there is an urgent need for a thinning technology of components constituting the spindle motor, for example, a stator and a rotor, which can achieve a thinning of the spindle motor. In particular, it is necessary to increase the winding density of the coil in the stator core to efficiently utilize the winding space of the thinned stator core.

An object of the present invention is to provide a stator core and a spindle motor having the same, which can increase the winding density of the coil to be wound.

It is also an object of the present invention to provide a stator core and a spindle motor having the same, which can freely change shapes.

In addition, an object of the present invention is to provide a stator coil and a spindle motor having the same, the coil winding operation is easy.

The stator core according to the present invention has a plurality of core bags protruding outwardly from the core bag, and a plurality of protruding outwards from the core bag, and a stopper for preventing the coil from being separated from the coil. It includes a tooth portion, the winding portion may be provided with a plurality of winding grooves for guiding the winding of the coil.

The winding groove may be provided so that the coil is wound once.

The winding groove may be provided so that the coil is wound a plurality of times.

The core bag and the tooth part may be formed by stacking a plurality of cores pressed into sheets using a steel sheet as a material.

The winding side of the pressed core may be provided with a plurality of winding grooves.

The steel sheet may be a silicon steel sheet.

The stopper may have a side that is inclined outward in the outer diameter direction at a portion facing the side of the winding part to facilitate winding of the coil.

The stopper may have a side surface disposed perpendicular to a portion facing the side surface of the winding part to prevent the winding of the coil from being separated.

The method for manufacturing a stator core according to the present invention includes the steps of: manufacturing a plurality of cores including a plurality of cores including a winding portion to which the coil is wound and a stopper to prevent the coil from being separated by pressing a sheet of steel sheet; Stacking a plurality of cores to be stacked, forming an insulating film on the stacked cores, and winding coils on the windings of the cores. A plurality of winding grooves may be provided to guide the winding of the coil.

The steel sheet may be a silicon steel sheet.

The stopper may be formed to have a side that is inclined outward in the outer diameter direction at a portion facing the side of the winding part to facilitate winding of the coil.

The spindle motor according to the present invention includes a base plate in which an insertion hole is formed, a fixing member inserted into and fixed to the insertion hole, a core bag having an opening formed to be press-fitted into the fixing member, and an outer diameter direction outside from the core bag. It includes a plurality of protruding portion and a winding portion is formed in the winding winding coil and the stopper is formed to prevent the separation of the coil, the side of the winding portion includes a stator core having a plurality of winding grooves for guiding the coil winding Can be.

The winding groove may be provided so that the coil is wound one time or a plurality of times.

The core bag and the tooth part may be laminated with multiple sheets of cores pressed into sheets using a steel sheet as a material.

The steel sheet may be a silicon steel sheet.

The stopper may have a side that is inclined outward in the outer diameter direction at a portion facing the side of the winding part to facilitate winding of the coil.

According to the stator core according to an embodiment of the present invention, the coil is wound around the winding groove, thereby increasing the density of the coil to be wound. In addition, since the coil is wound while being inserted into the coil winding groove when the coil is wound, the coil winding operation is easy.

In addition, since the winding groove is formed to be inclined toward the side of the tooth portion, there is an effect that the coil can be more easily wound inside the winding groove when the coil is wound. In addition, there is an effect that can be prevented from being wound from the winding groove during the winding operation of the coil. In addition, this allows the coil to be wound tightly using the inclined surface of the tooth portion even when there is no coil wound at the outermost part in the process of stacking the coils.

In addition, according to the stator core according to an embodiment of the present invention, since the core bag and the tooth part are formed by stacking a plurality of cores pressed into sheet by using a steel sheet as a material, the shape of the core bag and the tooth part can be freely changed. In addition, there is an effect that the winding groove can be formed in the tooth portion more easily.

According to the stator core according to another embodiment of the present invention, the coil is wound in the winding groove that the side is vertically disposed from the bottom surface has an effect that can be easily wound inside the winding groove of the coil. In addition, there is an effect that can be prevented from being wound from the winding groove during the winding operation of the coil.

1 is a cross-sectional view showing a spindle motor having a stator core according to an embodiment of the present invention.
2 is a perspective view showing a stator core according to an embodiment of the present invention.
3 is a perspective view showing a stator core according to another embodiment of the present invention.
4 is a perspective view showing a stator core according to another embodiment of the present invention.
5 is a reference diagram illustrating the manufacture of the stator core according to the present invention.
6 is a reference diagram (planar cross-sectional view) illustrating a shape in which a coil is wound around a stator core according to the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept. Other embodiments which fall within the scope of the inventive concept may be easily suggested, but are also included within the scope of the present invention.

In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, a spindle motor having a stator core according to an embodiment of the present invention will be described first, and various embodiments of the stator core used therein will be described below.

1 is a cross-sectional view showing a spindle motor having a stator core according to an embodiment of the present invention, Figure 2 is a perspective view showing a stator core according to an embodiment of the present invention.

1 and 2, the spindle motor 10 according to an embodiment of the present invention includes a stator 20 and a rotor 40.

The stator 20 refers to all fixed components except for rotating components. The stator 20 includes a base plate 22, a sleeve 23, and a sleeve holder 24 on which a printed circuit board 21 is installed. 25, a stator core 100 fixed to the fixing member 25 is included.

The rotor 40 has a cup-shaped rotor case 50 having an annular magnet 42 corresponding to the stator core 100 and an outer circumference thereof, and the magnet 42 has N poles and S poles in the circumferential direction. It is a permanent magnet that alternately magnetizes to generate a certain magnetic force.

In addition, the rotor case 50 includes a rotor hub 52 that is press-fitted to the shaft 44 and a magnet coupling portion 54 that arranges the annular magnet 42 on an inner surface thereof.

On the other hand, the rotor 40 is rotated by the electromagnetic interaction of the ring-shaped magnet 42 and the coil 110 wound on the stator core 100, that is, the rotor case 50 of the rotor 40 Rotate) is made of a structure in which the shaft 44 that interlocks with the rotor case 50 rotates.

The stator core 100 includes a core back 120 and a tooth portion 140 as described in detail in the description of the stator core 100 according to an embodiment of the present invention.

The core bag 120 is press-fitted into the fixing member 70 to form an opening to be fixed. An opening through which the fixing member 70 is press-fitted may be disposed at the center of the core bag 120 as an example, and the core bag 120 may be formed to have an annular shape.

The tooth part 140 may include a plurality of protrusions protruding outward from the core back 120 in the outer diameter direction and a stopper 141 preventing the coil 110 from being separated and the coil 110 from being separated. have.

Meanwhile, the winding part 143 and the stopper 141 of the tooth part 140 may include a main surface 143a corresponding to an upper surface or a lower surface and a side surface 143b defining a height of the tooth part 140. Can be.

A plurality of winding grooves 145 may be provided at the side surface 143b of the winding part 143 to guide the winding of the coil 110. The winding groove 145 may be a winding groove 145a of the first method in which the coil 110 of one turn is wound, and a second winding of the coil 110 of a plurality of turns in one winding groove 145 at a time. The winding groove 145b may be configured. This will be described later in detail with reference to the drawings (FIGS. 2 and 3).

In addition, the stopper 141 may have a side that is inclined outward in the outer diameter direction at a portion facing the side of the winding part 143 to facilitate the winding of the coil 110. With such a configuration, the winding of the coil 110 may be wound without losing the density of the coil wound around the winding portion 143 and the stopper 141 where the winding portion 143 and the stopper 141 meet in two or more stages of overlap in the winding structure of the coil. Can be. This will be described later in detail with reference to the drawing (FIG. 6).

Of course, the stopper 141 may be configured to have a side surface disposed perpendicularly to a portion facing the side surface of the winding unit 143 to prevent the winding coil 110 from being separated. This structure has an effect that the side of the stopper 141 is vertically disposed from the side of the winding part 143 so that the coil 110 is wound so that it can be more easily wound inside the winding part 143 of the coil. In addition, there is an effect that can be prevented from being separated from the winding unit 143 wound coil 110 during the winding operation of the coil 110.

Meanwhile, the core bag 120 and the tooth part 140 may be formed by stacking a plurality of cores pressed into sheets using a steel sheet as an overlap. Here, the steel sheet may be a silicon steel sheet. As a result, the winding part 143 and the stopper 141 of the tooth part 140 may be more easily formed. That is, in the case of stacking a plurality of cores pressed into sheets by using a silicon steel sheet as a stack, it is possible to constantly manufacture a plurality of steel sheets by the same press manufactured in the shape of the winding part 143 and the stopper 141. The production of the stator core can be simplified by manufacturing a plurality of identical steel sheets and laminating them together.

In addition, since the overlapping is formed after the press working, the shape of the winding part 143 or the stopper 141 may be easily changed. That is, the winding number of the coil 110 may be provided in one turn or a plurality of turns in each of the winding grooves 145 provided in the winding part 143, and the shape of the stopper 141 may also be the winding part 143. ) Can be freely changed to be inclined or orthogonal.

As described above, the coil 110 is wound around the winding part 143 to guide the winding of the coil by the winding groove 145 without empty space, thereby increasing the density even if the height of the coil 110 to be wound is equator. Therefore, it is possible to reduce the overall thickness of the spindle motor 10 according to an embodiment of the present invention. In addition, it is possible to increase the accuracy of the coil winding by increasing the utilization of space.

Meanwhile, in the spindle motor 10 according to the present embodiment, the case in which the stator core 100 is installed according to an embodiment of the present invention is described as an example, but is not limited thereto. ), A stator core according to another embodiment of the present invention as shown in FIG. 3, or a stator core according to another embodiment of the present invention as shown in FIG. 4 may be installed.

Next, an embodiment of the stator core 100 that can be used in the present invention will be described with reference to FIGS. 2 to 6.

2 is a perspective view showing a stator core according to an embodiment of the present invention.

As shown in FIG. 2, the stator core 100 according to an exemplary embodiment of the present invention includes a core bag 120 and a tooth portion 140.

The core bag 120 is press-fitted to the fixing member 25 to form an opening to be fixed. An opening through which the fixing member 25 is pressed may be disposed at the center of the core bag 120 as an example, and the core bag 120 may be formed to have an annular shape.

However, the shape of the core back 120 and the position of the opening are not limited thereto, and may be variously changed. That is, the core back 120 may be changed into various shapes such as a square ring shape, a hexagon ring shape, and an octagonal ring shape according to the shape of the fixing member 70.

The tooth part 140 may include a plurality of protrusions protruding outward from the core back 120 in the outer diameter direction and include a winding part 143 to which the coil 110 is wound and a stopper 141 to prevent the coil 110 from being separated. Can be.

Meanwhile, the winding part 143 and the stopper 141 of the tooth part 140 may include a main surface 143a corresponding to an upper surface or a lower surface and a side surface 143b defining a height of the tooth part 140. Can be.

A plurality of winding grooves 145 may be provided at the side surface 143b of the winding part 143 to guide the winding of the coil 110. In one embodiment of the present invention, the winding groove 145 is a winding groove 145a of the first method in which the coil 110 of one turn is wound. In the present method, a winding groove 145a corresponding to the number of turns of the coil 110 is provided at the side surface 143b of each winding part 143 so that the coil of one stage is wound. Then, two coils are wound in an overlap between the coils on the outer circumferential surface of the coil wound in one stage.

In addition, the stopper 141 may have a side that is inclined outward in the outer diameter direction at a portion facing the side of the winding part 143 to facilitate the winding of the coil 110. With such a configuration, the winding of the coil 110 may be wound without losing the density of the coil wound around the winding portion 143 and the stopper 141 where the winding portion 143 and the stopper 141 meet in two or more stages of overlap in the winding structure of the coil. Can be.

Here, the definition of the direction, the outer diameter direction refers to the direction from the inner circumferential surface of the annular core bag 120 toward the outer circumferential surface or the direction from the outer circumferential surface of the core bag 120 toward the inner circumferential surface of the core bag 120. That is, in FIG. 1, it means a direction from the fixing member 25 toward the end of the tooth part 140 and a direction from the end of the tooth part 140 toward the fixing member 25.

On the other hand, the winding portion 142 of the tooth portion 140 is provided with a winding groove 145a can be coiled 110 is densely wound to reduce the height of the coil 110 is wound on the stator core 100 Can be. That is, the stator core 100 according to an embodiment of the present invention is compared with the case in which the coil 110 is wound on the tooth part 140 having no winding groove 145a, and the height of the coil 110 is wound. Can be reduced.

As an example, the coil 110 may be wound around the winding groove 145 to be wound without wasting space in the winding part 143, thereby reducing the height of the coil 110 being wound.

Meanwhile, the core bag 120 and the tooth part 140 may be formed by stacking a plurality of cores pressed into sheets using a steel sheet as an overlap. Here, the steel sheet may be a silicon steel sheet. As a result, the winding part 143 and the stopper 141 of the tooth part 140 may be more easily formed. That is, in the case of stacking a plurality of cores pressed into sheets by using a silicon steel sheet as a stack, it is possible to constantly manufacture a plurality of steel sheets by the same press manufactured in the shape of the winding part 143 and the stopper 141. The production of the stator core can be simplified by manufacturing a plurality of identical steel sheets and laminating them together.

In addition, since the overlapping is formed after the press working, the shape of the winding part 143 or the stopper 141 may be easily changed. That is, the winding number of the coil 110 may be provided in one turn (a plurality of turns in another embodiment) in each winding groove 145a provided in the winding part 143, and the shape of the stopper 141 may also be provided. The winding unit 143 may be freely changed to be inclined or orthogonal.

As described above, the coil 110 is wound around the winding unit 143 to guide the winding of the coil without any empty space by the winding groove 145 to increase the density even if the height of the coil 110 to be wound is small. Therefore, it is possible to reduce the overall thickness of the spindle motor 10 according to an embodiment of the present invention. In addition, it is possible to increase the accuracy of the coil winding by increasing the utilization of space.

Hereinafter, a stator core according to another embodiment of the present invention will be described. On the other hand, in describing the stator core according to another embodiment of the present invention, a detailed description of the same configuration as the configuration described in the stator core according to an embodiment of the present invention described above will be omitted and replaced.

3 is a perspective view showing a stator core according to another embodiment of the present invention.

Referring to FIG. 3, the stator core 100 according to another embodiment of the present invention includes a core bag 120 and a tooth portion 140.

The core bag 120 is formed with an opening such that the fixing member 25 is press-fitted and fixed. The opening may be disposed at the center of the core bag 120 as an example. In addition, the core bag 120 may be formed to have a ring shape.

However, the shape of the core back 120 and the position of the opening are not limited thereto, and may be variously changed.

The tooth part 140 is a configuration corresponding to the same configuration as the tooth part described in the above embodiment, and a detailed description thereof will be omitted and only the differences in the above embodiment will be described.

The coil 110 wound around the winding part 143 of the tooth part 140 may be wound by a plurality of turns in each of the winding grooves 145b of the winding part 143. In this case, since the winding groove 145b does not need to be provided as many as the number of coils wound on the winding part 143, manufacturing may be easy.

As described above, according to the stator core 200 according to another embodiment of the present invention, in addition to the effect implemented from the stator core 100 according to the embodiment of the present invention described above, it is easier to manufacture the stator core. The effect is that you can.

4 is a perspective view showing a stator core according to another embodiment of the present invention.

Referring to FIG. 4, the stator core 100 according to another embodiment of the present invention includes a core bag 120 and a tooth portion 140.

The core bag 120 is formed with an opening such that the fixing member 25 is press-fitted and fixed. The opening may be disposed at the center of the core bag 120 as an example. In addition, the core bag 120 may be formed to have a ring shape.

However, the shape of the core back 120 and the position of the opening are not limited thereto, and may be variously changed.

The tooth part 140 corresponds to the same configuration as the tooth part described in the above-described embodiment or another embodiment, and a detailed description thereof will be omitted and only different points will be described in the above-described embodiment.

The stopper 141 may have a side surface disposed perpendicular to a portion facing the side surface of the winding unit 143 to prevent the coiled coil 110 from being separated. This structure has an effect that the side of the stopper 141 is vertically disposed from the side of the winding part 143 so that the coil 110 is wound so that it can be more easily wound inside the winding part 143 of the coil. In addition, there is an effect that can be prevented from being separated from the winding unit 143 wound coil 110 during the winding operation of the coil 110.

5 is a reference diagram illustrating the manufacture of the stator core according to the present invention.

As shown in FIG. 5, the stator core 100 according to the present invention stacks a plurality of cores 100a, 100b, 100c... Which are pressed into sheets using a steel sheet as an overlap to form an insulating coating thereon. The coil can be wound on it.

In more detail, the stator core according to the present invention includes a tooth part including a winding part 143 to which the coil 110 is wound and a stopper 141 to prevent the coil 110 from being separated by pressing a sheet of steel sheet ( Manufacturing a plurality of cores (100a, 100b, 100c ....) including a plurality of layers, and stacking a plurality of cores (100a, 100b, 100c ....) manufactured in the form of a plurality of layers; And forming an insulating film on the stacked cores 100 and winding the coil 110 on the winding part 143 of the core 100. The cores 100a and 100b are manufactured in the sheet. , 100c ....) may be provided with a plurality of winding grooves 145 for guiding the winding of the coil.

Of course, the structure of the stator core 100 may correspond to all embodiments described with reference to FIGS. 1 to 4, and a description thereof will be omitted.

6 is a reference diagram (planar cross-sectional view) illustrating a shape in which a coil is wound around a stator core according to the present invention.

Referring to FIG. 6, in the stator core according to the present invention, the stopper 141 may have a side inclined outward in an outer diameter direction at a portion facing the side of the winding part 143 to facilitate winding of the coil 110. You can have it. With such a configuration, the winding of the coil 110 may be wound without losing the density of the coil wound around the winding portion 143 and the stopper 141 where the winding portion 143 and the stopper 141 meet in two or more stages of overlap in the winding structure of the coil. Can be.

The winding side 143b of the winding unit 143 is provided with a plurality of winding grooves 145 for guiding the winding of the coil 110, and the winding groove 145 has one turn or multiple turns of coils 110. It will be rolled up. When the coil of one stage (S1) is wound around each winding groove 145 and all the coils of the first stage (S1) are wound around the winding unit 143, each coil is wound on the outer circumferential surface of the coil wound to the first stage (S1). Between the coils of the second stage (S2) is overlapped.

At this time, the coil of the second stage (S2) wound around the portion where the winding part 143 and the stopper 141 meet, if the stopper 141 is provided perpendicular to the winding part 143, the space is insufficient. If the coil side cannot be wound, but the side of the side of the winding portion 143 and the side of the stopper 141 has an inclined side in the outer diameter direction, the inclined surface compensates for the insufficient space and the inclined surface has two stages. The winding to (S2) also serves to support the coil can further increase the winding density of the coil. Of course, this can also be applied to the case of three stages, four stages.

10: Motor
100: Stator Core
120: coreback
140: Tisbu

Claims (16)

A core bag having an opening formed to be pressed and fixed to the fixing member; And
And a plurality of protrusions protruding outward from the core back in the outer diameter direction and having a stopper to prevent the coil from being wound and the coil from which the coil is wound.
The stator core is provided on the side of the winding portion is provided with a plurality of winding grooves for guiding the winding of the coil. The method of claim 1,
The winding groove is a stator core is provided so that the coil is wound once. The method of claim 1,
The winding groove is a stator core is provided so that the coil is wound a plurality of times. The method of claim 1,
The core back and the tooth part is a stator core which is formed by stacking a plurality of cores pressed in a single sheet using a steel sheet as a material. 5. The method of claim 4,
The stator core is provided with a plurality of winding grooves on the side of the winding portion of the pressed core. 5. The method of claim 4,
The steel sheet is a silicon steel sheet stator core. The method of claim 1, wherein the stopper,
A stator core having a side inclined outwardly in an outer diameter direction at a portion facing the side of the winding part to facilitate winding of the coil. The method of claim 1, wherein the stopper,
A stator core having a side surface disposed perpendicular to a portion facing the side surface of the winding part to prevent the winding coil from being separated. Pressing a sheet of steel sheet to produce a plurality of cores including a winding portion in which the coil is wound and a tooth portion having a stopper for preventing the coil from being separated;
Stacking a plurality of cores stacked in a single sheet;
Forming an insulating film on the laminated core; And
Winding a coil on a winding portion of the core;
Method of manufacturing a stator core is provided with a plurality of winding grooves for guiding the winding of the coil on the side of the winding portion of the core made of a single sheet. 10. The method of claim 9,
The steel sheet is a silicon steel sheet manufacturing method of the stator core. The method of claim 9, wherein the stopper,
The method of manufacturing a stator core is formed to have a side that is inclined outward in the outer diameter direction at the portion facing the side of the winding portion to facilitate the winding of the coil. A base plate having an insertion hole formed therein;
A fixing member inserted into and fixed to the insertion hole; And
And a core bag having an opening formed to be press-fitted into the fixing member, a plurality of protrusions protruding outward from the core bag in an outer diameter direction, and a tooth part having a winding part on which a coil is wound, and a stopper to prevent separation of the coil. A stator core having a plurality of winding grooves that guide the winding of the coil;
Spindle motor comprising a. The method of claim 12,
The winding groove is a spindle motor that is provided so that the coil is wound once or a plurality of times. The method of claim 12,
The core back and the tooth part is formed by stacking a plurality of cores stacked in a sheet by using a steel sheet as a material. 15. The method of claim 14,
The steel plate is a spindle motor is a silicon steel sheet. The method of claim 12, wherein the stopper,
Spindle motor having a side that is inclined outward in the outer diameter direction at the portion facing the side of the winding portion to facilitate the winding of the coil.
KR1020110058662A 2011-06-16 2011-06-16 Stator core and spindle motor having the same KR20120139093A (en)

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Application Number Priority Date Filing Date Title
KR1020110058662A KR20120139093A (en) 2011-06-16 2011-06-16 Stator core and spindle motor having the same

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Application Number Priority Date Filing Date Title
KR1020110058662A KR20120139093A (en) 2011-06-16 2011-06-16 Stator core and spindle motor having the same

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KR20120139093A true KR20120139093A (en) 2012-12-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220049267A (en) * 2020-10-14 2022-04-21 주식회사 현대케피코 Coil separation preventing structure of motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220049267A (en) * 2020-10-14 2022-04-21 주식회사 현대케피코 Coil separation preventing structure of motor

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