KR20120126863A - Base assembly for motor and motor including the same - Google Patents

Base assembly for motor and motor including the same Download PDF

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Publication number
KR20120126863A
KR20120126863A KR1020110044965A KR20110044965A KR20120126863A KR 20120126863 A KR20120126863 A KR 20120126863A KR 1020110044965 A KR1020110044965 A KR 1020110044965A KR 20110044965 A KR20110044965 A KR 20110044965A KR 20120126863 A KR20120126863 A KR 20120126863A
Authority
KR
South Korea
Prior art keywords
coil
motor
coil lead
lead
insulating member
Prior art date
Application number
KR1020110044965A
Other languages
Korean (ko)
Inventor
이제욱
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.)
Filing date
Publication date
Application filed by 삼성전기주식회사 filed Critical 삼성전기주식회사
Priority to KR1020110044965A priority Critical patent/KR20120126863A/en
Publication of KR20120126863A publication Critical patent/KR20120126863A/en

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Classifications

    • 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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • G11B2220/2516—Hard disks

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

PURPOSE: A base assembly for motor and a motor including the same are provided to improve connectivity between an insulating member and a base member and to prevent disconnection by contact with a base member. CONSTITUTION: A base member(110) includes a coil extraction unit. A coil extraction line passes through the coil extraction unit which generates rotation operation force of a motor. An insulating member(120) is inserted to the coil extraction unit in order to prevent contact with the base member. The insulating member adheres closely to the inner surface of the coil extraction unit.

Description

Base assembly for a motor and a motor including the same

The present invention relates to a base assembly for a motor and a motor including the same, and more particularly, to a base assembly for a motor and a motor including the same, to prevent disconnection of the lead wire of the coil and the base member.

A hard disk drive (HDD), which is one of information storage devices, is a device that reproduces data stored on a disk using a read / write head or records data on a disk.

Such a hard disk drive requires a disk driving device capable of driving the disk, and a small motor is used for the disk driving device.

The small motor is equipped with a disk, and the disk is rotated to reproduce data stored in the disk.

Here, the motor for rotating the disk is a device for converting electrical energy into mechanical energy by using a force that a current flowing in a magnetic field receives, and basically a driving force for rotating the disk by electromagnetic interaction of a magnet and a coil. Will be generated.

Then, in order to generate a driving force for rotating the disk, the coil must be electrically connected to the outside to supply current from the outside. To this end, the leader line of the coil penetrates the base member and is electrically connected to the printed circuit board coupled to the outer surface of the base member.

However, since the lead line of the coil must pass through the base member made of a conductive material, disconnection occurs due to unnecessary contact with the base member.

Accordingly, in order to prevent disconnection between the coil lead wire and the base member, a method of insulating and insulating an insulating member made of an insulating material on the upper and lower portions of the base member is used.

However, the conventional method as described above requires attaching the insulating member to the upper surface or both sides of the base member, so that the step of inverting the base member when joining the base member is added, which leads to a complicated process. .

In addition, the conventional insulating member has a weak coupling force with the base member has a problem that the insulating member is separated from the base member due to the impact, etc., the problem that the disconnection due to the bending of the coil lead wire in the hole formed in the base member Could not be effectively prevented.

Therefore, there is an urgent need to study to improve the performance and life of the motor by completely blocking the contact between the lead wire of the coil and the base member during the electrical connection between the lead wire of the coil and the printed circuit board.

Disclosure of Invention An object of the present invention is to provide a motor base assembly and a motor including the same, which prevents disconnection due to contact between the lead wire of the coil and the base member and improves the coupling force between the insulating member and the base member.

A base assembly for a motor according to an embodiment of the present invention includes a base member having a coil lead portion through which a lead wire of a coil for generating a rotational driving force of the motor passes; And an insulation member inserted into the coil lead-out part while maintaining a smaller diameter than the coil lead-out part to prevent contact between the lead wire of the coil and the base member, and then contacting the inner surface of the coil lead-out part with elastic deformation. At least one of the ends of the insulating member may be formed to be inclined to reduce an outer diameter of the insulating member to facilitate insertion of the insulating member into the coil lead-out portion.

The insulating member of the base assembly for a motor according to an embodiment of the present invention may be cut in order to be easily inserted into the coil lead-out portion by contracting by elasticity.

The insulation member of the base assembly for a motor according to an embodiment of the present invention may be inserted into the coil lead-out and then in contact with each other.

The insulating member of the base assembly for a motor according to an embodiment of the present invention may protrude to at least one of the upper side and the lower side of the coil lead-out portion.

The insulating member of the base assembly for a motor according to an embodiment of the present invention may be inserted into the coil lead-out portion, and then an outer surface thereof may contact the inner circumferential surface of the coil lead-out portion.

Motor according to another embodiment of the present invention includes a base assembly for the motor; A sleeve coupled to the base member and supporting the shaft; A hub that rotates in association with the shaft and supports the magnet; And a core coupled to the base member, the coil being wound to generate a rotational driving force in interaction with the magnet.

According to the motor base assembly and the motor including the same according to the present invention, it is possible to prevent the disconnection due to the contact of the lead wire of the coil and the base member.

In addition, the coupling between the insulation member and the base member which prevents disconnection due to contact between the lead wire of the coil and the base member can be facilitated, and the coupling force can also be improved.

1 is a schematic cross-sectional view showing a motor including a base assembly for a motor according to an embodiment of the present invention.
Figure 2 is a schematic perspective and enlarged perspective view showing a base assembly for a motor according to an embodiment of the present invention.
3 is a schematic perspective view and a schematic plan view showing an insulating member provided in the base assembly for a motor according to an embodiment of the present invention.
Figure 4 is a schematic diagram showing a process in which the insulating member provided in the base assembly for a motor according to an embodiment of the present invention is coupled to the coil lead-out.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. 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 falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.

The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.

1 is a schematic cross-sectional view showing a motor including a base assembly for a motor according to an embodiment of the present invention.

Referring to FIG. 1, a motor 400 including a base assembly 100 for a motor according to an embodiment of the present invention includes a base 140 for a motor, a core 140 around which a coil 130 is wound, and a shaft. The sleeve 220 supporting the 210 and the magnet 310 may include a hub 300 coupled thereto.

First, the term for the direction is defined, the axial direction refers to the up and down direction with respect to the shaft 210, as shown in Figure 1, the radially outer and inward direction relative to the shaft 210, the hub 300 It may mean the direction of the center of the shaft 210 on the basis of the outer end direction and the outer end of the hub (300).

The motor base assembly 100 may include a base member 110 and an insulating member 120, and the core 140 to which the coil 130 is wound may be coupled to the base member 110.

In other words, the base member 110 may be a fixing member that supports the rotating member including the hub 300, and the coil 130 and the coil 130 are wound to generate an electromagnetic force of a predetermined size when power is applied. The core 140 may be a fixed structure to which the core 140 is coupled.

The base member 110 may include a support part 112 and a body part 114, and an inner circumferential surface of the support part 112 is coupled to an outer circumferential surface of the sleeve 220 supporting the shaft 210. 220 may be supported.

That is, the support 112 may have a hollow and protrude upwardly in the axial direction, and the sleeve 220 supporting the shaft 210 may be inserted into the hollow to be coupled by welding, bonding, or pressing. have.

In addition, the outer circumferential surface of the support part 112 may be coupled to the core 140 around which the coil 130 is wound, and rigidity must be secured to secure rotational stability of the motor 400 according to the present invention.

A coil lead-out unit 115 may be formed in the base member 110 corresponding to the coil 130 to penetrate the coil lead-out line 135 to the outside of the base member 110.

Accordingly, the coil leader line 135 may be electrically connected to the printed circuit board 150 coupled to the bottom surface of the base member 110 to supply external power.

Here, the insulation member 120 may be coupled to the inside of the coil lead-out 115, and the insulation member 120 may protrude outward from at least one of the upper side and the lower side of the coil lead-out 115. Can be.

This is to prevent the disconnection between the coil lead-out line 135 and the base member 110, the description thereof, the specific position of the base member 110, the coil lead-out 115 is formed and the coil lead-out 115 The structure and the like will be described later in detail with reference to FIGS. 2 and 3.

The shaft 210 may be supported by the sleeve 220 in combination with the hub 300 and a rotating member that rotates in conjunction with the hub 300.

Here, the sleeve 220 may support the shaft 210 such that the upper end of the shaft 210 protrudes upward in the axial direction, and forge Cu or Al, or Cu-Fe alloy powder or SUS powder. It can be formed by sintering.

The shaft 210 is inserted to have a small gap with the shaft hole of the sleeve 220, and the micro gap is filled with oil and formed on at least one of an outer circumferential surface of the shaft 210 and an inner circumferential surface of the sleeve 220. The radial dynamic pressure unit 222 may support the rotation of the hub 300 more smoothly.

The radial dynamic pressure unit 222 may form a pressure so as to be deflected to one side when the shaft 210 rotates, and may be formed in any one of a herringbone, spiral, and thread shape.

However, the radial dynamic pressure part 222 is not limited to the above-mentioned shape, and a shape capable of generating radial dynamic pressure on the rotating member when the rotating member including the shaft 210 and the hub 300 rotates. If it is, it can be applied, and there is no limit to the number.

In addition, at least one of the upper surface of the sleeve 220 and the one surface of the hub 300 corresponding to the upper surface of the sleeve 220, the thrust dynamic pressure unit 224 for generating a thrust dynamic pressure on the rotating member including the shaft 210 ) May be formed.

The thrust dynamic pressure part 224 is not limited in shape like the radial dynamic pressure part 222, and can be freely changed at the level of those skilled in the art.

In addition, the sleeve 220 may include a circulation hole 226 formed to communicate the upper and lower portions of the sleeve 220, the circulation hole 226 of the inside of the motor 400 according to the present invention. The pressure of the oil may be dispersed to maintain the equilibrium, and the air bubbles or the like existing in the motor 400 may be discharged by circulation.

Here, the lower portion of the sleeve 220 in the axial direction is coupled to the sleeve 220 while maintaining a gap, the gap may be coupled to the base cover 230 for receiving oil.

The base cover 230 may serve as a bearing for supporting the lower surface of the shaft 210 by receiving oil in a gap between the sleeves 220.

In addition, the oil is a gap between the shaft 210 and the sleeve 220, a gap between the hub 300 and the sleeve 220 and the base cover 230 and the shaft 210 and the sleeve The gap between the 220 may be continuously filled to form a full-fill structure as a whole.

The hub 300 is a rotating structure rotatably provided with respect to the fixing member including the base member 110, and has a ring-shaped magnet 310 corresponding to each other at regular intervals from the core 140 on an inner circumferential surface thereof. It can be provided.

In addition, the hub 300 is the first cylindrical wall portion 302 to be fixed to the upper end of the shaft 210, the disc portion 304 extending radially outward from the end of the first cylindrical wall portion 302, A second cylindrical wall portion 306 protruding downward from the radially outer end of the disc portion 304 and a disc mounting portion 308 extending radially outward from an end of the second cylindrical wall portion 306 to mount the disc. The magnet 310 may be coupled to an inner circumferential surface of the second cylindrical wall portion 306.

Here, the rotational driving force of the motor 400 according to the present invention may be obtained by the interaction of the magnet 310 and the coil 130 wound around the core 140.

2 is a schematic perspective view and an enlarged perspective view of a base assembly for a motor according to an embodiment of the present invention, Figure 3 is a schematic perspective view showing an insulating member provided in the base assembly for a motor according to an embodiment of the present invention And a schematic plan view.

2 and 3, the base assembly 100 for a motor according to an embodiment of the present invention may include a base member 110 and an insulating member 120.

As described above, the base member 110 may include a support part 112 and a body part 114, and the body part 114 may include a coil lead-out part for drawing the coil lead-out line 135 to the outside. A plurality of 115 may be formed.

Here, referring to a specific position of the base member 110 in which the coil lead-out portion 115 is formed, the coil lead-out portion 115 is the first stepped portion 114a- of the inner portion 114a of the base member 110. It can be formed in 1).

Specifically, the body portion 114 of the base member 110 may be formed extending radially outward from the end of the support portion 112, the outermost side of the body portion 114 is the base member 110 The outer wall of) can be formed.

In addition, the body portion 114 may be specifically configured as an inner portion 114a corresponding to the inner side of the hub 300 and an outer portion 114b corresponding to the outer side of the hub 300, and the inner portion 114a. The upper portion of the coil 140 is wound around the core 140, the magnet 310 and the disk mounting portion 308 of the hub 300 may be disposed.

The inner portion 114a may be formed to be stepped, and the height of the first stepped portion 114a-1 located in the radially inner side may be lower than the height of the second stepped portion 114a-2 located in the radially outer side. Can be.

In summary, the coil lead-out portion 115 through which the lead line 135 of the coil penetrates may be formed to penetrate through the first stepped portion 114a-1 in the shape of a hole, and the lower portion of the inner portion 114a. It may be electrically connected to the printed circuit board 150 coupled to the coupling method such as soldering.

Here, at least one coil lead-out 115 may be formed along the outer circumferential surface of the support part 112 at the first stepped part 114a-1.

That is, the coil lead-out 115 may be formed of a plurality of four as shown in Figure 2, which is a coil 130 is a three-phase coil, that is, a u-phase coil, a v-phase coil and a w-phase coil Because it can.

In other words, one end of each of the u-phase, v-phase and w-phase coils 130 may be a common portion, and each common portion may be treated as one, which is the respective u-phase, v-phase and w-phase coils ( Along with the other end of 130, four coil leads 135 may be formed.

Accordingly, the coil lead-out unit 115 may be formed in four so that the four coil lead-out line 135 passes through.

However, the coil lead-out unit 115 is not limited to being formed in four as described above, but may be formed in a single or a plurality of other than four.

The insulating member 120 is a component for preventing a disconnection due to contact between the coil lead line 135 and the base member 110 when the coil lead line 135 is drawn out through the coil lead unit 115. In addition, the coil may be inserted into the lead portion 115 and may be coupled to the base member 110.

In this case, the insulating member 120 may include a through hole 125 through which the coil lead-out portion 115 passes, and the through-hole 125 may have a ratio different from that of the coil lead-out portion 115 only. It may just be a corresponding shape.

Here, the insulating member 120 may be formed larger than the coil lead-out 115, it may be an injection molding having elasticity.

That is, the insulation member 120 may be an injection molded material made of rubber, and may be elastically deformed to be inserted into and coupled to the coil lead-out unit 115.

In other words, before the insulation member 120 is inserted into the coil lead-out unit 115, the coil lead-out unit 115 is elastically deformed and elastically deformed into a shape smaller than the diameter of the coil lead-out unit 115. Will be inserted into

After the insulating member 120 is inserted into the coil lead-out unit 115, the insulating member 120 is brought into close contact with the inner surface of the coil lead-out unit 115 by elasticity to be restored to its original state.

In addition, at least one of the ends of the insulating member 120 may be formed to be inclined to reduce the outer diameter, which is to facilitate the insertion of the insulating member 120 into the coil lead-out 115.

That is, the insulation member 120 may be smaller than the diameter of the coil lead-out portion 115 by elasticity and inserted into the coil lead-out portion 115, but the coil is formed by inclining the outer diameter of at least one of the ends. Insertion into the lead portion 115 can be made easier.

In addition, one end and the other end of the insulating member 120 may be continuously cut, which is more effective in elastic contraction before being inserted into the coil lead-out 115 to facilitate insertion into the coil lead-out 115. For sake.

4 is a schematic diagram illustrating a process of coupling an insulation member provided in a base assembly for a motor according to an embodiment of the present invention to a coil outlet.

Referring to FIG. 4, the diameter of the insulation member 120 before being inserted into the coil lead-out 115 formed in the base member 110 may be equal to or larger than the diameter of the coil lead-out 115.

This is to improve the coupling force between the outer circumferential surface of the insulating member 120 and the inner circumferential surface of the coil lead-out unit 115 without an adhesive after the insulating member 120 is inserted into the coil lead-out unit 115.

At this time, the insulating member 120 may be in a state in which one end and the other end is continuously cut, at least one of the one end and the other end may be inclined to reduce the outer diameter.

The insulating member 120 as described above may elastically contract for insertion into the coil lead-out 115, and may maximize the effectiveness of elastic contraction by the incised shape and the inclined outer diameter during elastic contraction.

At this time, the outer diameter of the elastic member shrinkage of the insulating member 120 may be formed smaller than the diameter of the coil lead-out portion 115, it can be inserted into the coil lead-out portion 115 while maintaining this state.

When the insulation member 120 is inserted into the coil lead-out unit 115, the insulation member 120 has an outer circumferential surface of the insulation member 120 due to an elastic force to return to its original state. It may be in contact with the inner peripheral surface of the.

In addition, the cut portions of the insulating member 120 may be in contact with each other so that the entire inner circumferential surface of the coil lead-out 115 may be contacted by the insulating member 120.

Here, the length in the axial direction of the insulating member 120 is formed longer than the axial length of the coil lead-out portion 115 so that the end of the insulating member 120 is at least of the upper and lower sides of the coil lead-out portion 115 It can protrude to one outside.

Therefore, when the coil lead-out line 135 penetrates the coil lead-out unit 115, the possibility of contact with the base member 110 may be significantly lowered.

Through the above embodiment, the present invention can prevent the disconnection due to the contact of the lead wire 135 and the base member 110 of the coil by the insulating member 120 having elasticity, the insulation without a separate adhesive The member 120 may be stably and firmly coupled to the coil lead-out 115.

In addition, by forming at least one of the ends of the insulating member 120 to be inclined to facilitate the insertion of the insulating member 120 into the coil lead-out 115, it is possible to maximize the simplification of the process and productivity.

100: base assembly for motor 110: base member
115: coil lead-out 120: insulating member
130: coil 135: coil leader
140: core 150: printed circuit board
210: shaft 220: sleeve
300: hub 310: magnet
400: motor

Claims (6)

A base member having a coil lead-out portion through which a lead wire of a coil for generating a rotational driving force of the motor passes; And
An insulation member inserted into the coil lead-out part while maintaining a smaller diameter than the coil lead-out part to prevent contact between the lead wire of the coil and the base member, and being in close contact with the inner surface of the coil lead-out part by elastic deformation. ,
At least one of the ends of the insulating member is formed to be inclined so that the outer diameter is reduced to facilitate insertion of the insulating member into the coil lead-out portion.
The method of claim 1,
The insulating member is a base assembly for a motor is cut in order to facilitate the insertion by the elastic lead-out contraction by the elastic.
The method of claim 2,
And the insulating member is inserted into the coil lead-out part, and the cut surfaces thereof contact each other.
The method of claim 1,
The insulating member is a motor base assembly for protruding to at least one of the upper side and the lower side of the coil lead-out.
The method of claim 1,
The insulating member is inserted into the coil lead-out after the outer surface is in contact with the inner peripheral surface of the coil lead-out motor base assembly.
A base assembly for a motor according to any one of claims 1 to 5;
A sleeve coupled to the base member and supporting the shaft;
A hub that rotates in association with the shaft and supports the magnet; And
And a core coupled to the base member and having a coil wound therein to generate a rotational driving force in interaction with the magnet.
KR1020110044965A 2011-05-13 2011-05-13 Base assembly for motor and motor including the same KR20120126863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110044965A KR20120126863A (en) 2011-05-13 2011-05-13 Base assembly for motor and motor including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110044965A KR20120126863A (en) 2011-05-13 2011-05-13 Base assembly for motor and motor including the same

Publications (1)

Publication Number Publication Date
KR20120126863A true KR20120126863A (en) 2012-11-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110044965A KR20120126863A (en) 2011-05-13 2011-05-13 Base assembly for motor and motor including the same

Country Status (1)

Country Link
KR (1) KR20120126863A (en)

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