KR20130085571A - Fpc and coil connection module for spindle motor and spindle motor having the same - Google Patents

Fpc and coil connection module for spindle motor and spindle motor having the same Download PDF

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Publication number
KR20130085571A
KR20130085571A KR1020110140340A KR20110140340A KR20130085571A KR 20130085571 A KR20130085571 A KR 20130085571A KR 1020110140340 A KR1020110140340 A KR 1020110140340A KR 20110140340 A KR20110140340 A KR 20110140340A KR 20130085571 A KR20130085571 A KR 20130085571A
Authority
KR
South Korea
Prior art keywords
fpc
hole
wire
base
coil
Prior art date
Application number
KR1020110140340A
Other languages
Korean (ko)
Inventor
임태형
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 KR1020110140340A priority Critical patent/KR20130085571A/en
Publication of KR20130085571A publication Critical patent/KR20130085571A/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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
    • 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
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/05—Flexible printed circuits [FPCs]

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

The present invention provides a wire drawn out from a coil of an armature, a land portion for electrically connecting with the wire, a FPC having a through hole of the wire, a base formed so that the through hole of the wire faces the through hole of the FPC; And an insulating bush inserted into the base to insulate the wire from the base and having a through hole formed therein, and a bonding part covering the through hole of the insulating bush, the through hole of the base, and the through hole of the FPC. And a connection module of the FPC and coil for the spindle motor, and a spindle motor having the same, in which a soldering portion for electrically connecting the wires and lands of the FPC is formed.

Description

FPC and Coil Connection Module for Spindle Motor and Spindle Motor having the same}

The present invention relates to a spindle motor having the connection module of the FPC and coil for the spindle motor.

In general, a spindle motor used as a driving device for a recording disk such as a hard disk has a lubricating fluid such as oil stored between a rotating part and a fixed part at the time of rotation of the motor. It is used in various ways.

More specifically, since a spindle motor equipped with a hydrodynamic bearing that maintains axial rigidity of the shaft only by the centrifugal force of the lubricating oil is based on winsimic force, there is no metal friction and the stability is increased at high speeds, thereby reducing noise and vibration. It is mainly used in high-end optical disk devices and magnetic disk devices because it is less likely to occur and the high-speed rotation of the rotating body is smoother than a motor having a ball bearing.

However, a spindle motor having a hydrodynamic bearing according to the prior art applies a UV bond to the front of the FPC to seal the FPC coupled to the base. However, if made in this way, the amount of UV bond is increased, the production cost is increased, there is a problem that the leakage (Leak) occurs according to the adhesion and adhesion state of the FPC.

The present invention has been made to solve the above problems, and covers the through hole of the base, the insulation bush and the FPC through the coil drawn from the coil of the armature of the spindle motor with a bonding agent, the wire land of the FPC By connecting the parts electrically and at the same time forming the soldering part to cover the penetrating part of the bonding agent and the FPC, not only the sealing but also the connection module of the FPC and coil for the spindle motor and the spindle motor having the same can be realized in a more robust structure. It is to provide.

The present invention provides a wire drawn out from a coil of an armature, a land portion for electrically connecting with the wire, a FPC having a through hole of the wire, a base formed so that the through hole of the wire faces the through hole of the FPC; And an insulating bush inserted into the base to insulate the wire from the base and having a through hole formed therein, and a bonding part covering the through hole of the insulating bush, the through hole of the base, and the through hole of the FPC. And a connecting module for the FPC and coil for the spindle motor having a soldering portion for electrically connecting the land of the wire and the FPC.

In addition, the FPC has an open part into which a bonding agent for forming a bonding part is injected, and the open part is connected to a through hole of a wire formed in the FPC.

In addition, the insulating bush is formed with a base insertion portion to be inserted into the base.

In addition, the soldering portion is formed to cover the through hole of the wire formed in the bonding portion and the FPC.

Spindle motor according to the present invention is composed of a rotating part including a rotating shaft, a hub and a magnet, and a fixing part including an armature consisting of a sleeve, a base, a core and a coil, and a working fluid is injected into the fluid between the rotating part and the fixing part. A dynamic pressure bearing part is formed, a wire part drawn out from the coil of the armature, a land part coupled to the base and electrically connected to the wire, a FPC (flexible circuit board) formed with a through hole of the wire, And an insulation bush inserted into the base to form a through hole of a wire to insulate the wire from the base, wherein the through hole of the wire is formed in the base, the through hole of the base, the through hole of the insulation bush, and the A bonding portion covering the through hole of the FPC and a soldering portion electrically connecting the wire to the FPC are formed.

In addition, the FPC has an open part into which a bonding agent for forming a bonding part is injected, and the open part is connected to a through hole of a wire formed in the FPC.

In addition, the insulating bush is formed with a base insertion portion to be inserted into the base.

In addition, the soldering portion is formed to cover the through hole of the wire formed in the bonding portion and the FPC.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention, a base, an insulating bush, and a through hole of an FPC, through which a coil drawn out from a coil of an armature of a spindle motor passes, are covered with a bonding agent, and the wire is electrically connected to a land portion of the FPC, and a bonding agent is also used. And by forming the soldering portion to cover the through portion of the FPC, it is possible to obtain a spindle module having a connection module of the FPC and coil for the spindle motor, which can be implemented in a more robust structure as well as a reliable sealing.

1 is a plan view schematically showing a connection module of the coil and the FPC for the spindle motor according to the present invention.
FIG. 2 is a cross-sectional view schematically illustrating a connection module of the spindle motor FPC and the coil shown in FIG. 1. FIG.
Figure 3 is a schematic cross-sectional view of a spindle motor according to an embodiment having a connection module of the FPC and the coil according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. It is also to be understood that the terms "first,"" second, "" one side,"" other, "and the like are used to distinguish one element from another, no. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the spindle module having a connection module and the FPC for the coil motor and the coil according to the present invention.

1 is a plan view schematically showing a connection module of the spindle motor FPC and the coil according to the present invention, Figure 2 is a cross-sectional view schematically showing a connection module of the spindle motor FPC and coil shown in FIG. 2 (a) shows the bonding part and the soldering part before formation, and FIG. 2 (b) shows the bonding part and the soldering part after formation.

As shown, the connection module of the FPC and coil is an FPC (Flexible Circuit Board) 10, a base 20, an Insulaiton Bush 30, a wire 40 drawn from the coil of the armature, bonding The part 50 and the soldering part 60 are included.

In addition, a land portion 11 for electrically connecting with the wire 40 is formed in the FPC 10, and a through hole 12 for penetrating the wire 40 is formed. In addition, the FPC 10 is formed such that an open portion 13 for injecting a bonding agent is connected to the through hole 12 to form a bonding portion 50 on the base 20 and the insulating bush 30. do. That is, the open portion 13 has a slit shape connected to the through hole 12 from the end of the FPC 10. The FPC 10 thus formed is coupled to the bottom of the base.

The base 20 has a through hole 21 facing the through hole 12 of the FPC 10 to penetrate the wire 40.

In addition, the insulating bush 30 has a through hole 31 facing the through hole 12 of the FPC 10 to penetrate the wire 40. In addition, as shown in FIG. 2, the insulating bush 30 has a base inserting portion 32 formed to insulate the wire 40 and the base 20, and the through hole 31 has the base. It is formed in the insertion portion (32).

Bonding part covering the through-hole 31 of the insulating bush 30, the through-hole 21 of the base 20 and the through-hole 12 of the FPC (10) through which the wire is penetrated ( 50) is formed. The bonding part 50 is formed by injecting a bonding agent through the open part 13 of the FPC 10. In addition, the bonding agent injected to form the bonding portion may be implemented as a UV bond.

In addition, a soldering part 60 is formed below the bonding part 50 to electrically connect the wire 40 and the land part 11 of the FPC 10.

In addition, the soldering part 60 is formed to cover the through hole of the FPC and the bonding part 950.

As described above, the connection module of the FPC and the coil according to the present invention can be completely sealed by the bonding part 50 while minimizing the sealing part, and the double bonding of the bonding part 50 and the soldering part 60 is possible. As it is implemented as a coupling structure, a more stable and robust structure is realized.

Figure 3 is a schematic cross-sectional view of a spindle motor according to an embodiment having a connection module of the FPC and the coil according to the present invention. As shown in the drawing, the spindle motor 100 includes a rotating part including a rotating shaft 110, a hub 120, and a magnet 130, a sleeve 140, a base 150, a core 161, and a coil 162. It consists of an armature 160, a pulling plate 152, a fixing part including a cover 180, the oil is a working fluid is injected into the fluid hydrodynamic bearing portion is formed between the rotating part and the fixing part, the fixing part armature The wire W drawn from the coil of the insulating bush 180 and the FPC (Flexible Circuit Board) 190 is included.

More specifically, in the rotating unit, the hub 120 is coupled to the upper end of the rotating shaft 110.

In addition, the hub 120 is a cylindrical portion 121 is fixed to the upper end of the rotating shaft 110, a disc portion 122 extending radially outward from the cylindrical portion 121, and the disc portion 122 It consists of a side wall portion 123 extending downward in the axial direction of the rotary shaft at the radially outer end of the seal, and a sealing portion 124 extending downward in the axial direction of the rotary shaft, opposing the outer peripheral portion of the sleeve.

In addition, the magnet 130 having an annular ring shape is mounted on the inner circumferential surface of the side wall part 123 so as to face the armature 160 including the core 161 and the coil 162.

Next, in the fixing portion, the sleeve 140 supports the rotating shaft 110 to be rotatable. In addition, the sleeve 140 has upper and lower dynamic pressure generating grooves 141 formed on an inner circumferential surface of the sleeve 140 opposite to the rotation shaft 110.

In addition, the sleeve 140 has an oil circulation hole 142 in the axial direction of the rotary shaft 110 to connect the upper and lower surfaces of the sleeve 140 so that the oil injected to form the hydrodynamic bearing portion circulates through the rotary shaft system. ) May be formed.

A minute gap is formed between the rotating shaft 110 and the sleeve 140, oil is injected into the minute gap, and a radial dynamic bearing part RB is formed by the dynamic pressure generating groove 141. In addition, the radial dynamic bearing may be formed on the upper and lower portions of the sleeve.

The cover 143 is for sealing the oil injected to form the hydrodynamic bearing, and is coupled to the lower inner circumferential surface of the sleeve 140.

In addition, an armature 160 including the core 161 and the coil 162 is fixed to the outer circumferential portion of the base 150 by indentation or adhesion to face the magnet 130. In addition, a pulling plate 152 is mounted on the base 150 so as to face the magnet 130 with respect to the axial direction of the rotating shaft 110 to prevent injuries of the rotating part by the attraction of the magnet 130. .

In addition, a through hole for penetrating the wire W drawn from the coil 161 is formed in the base 150.

In addition, the insulating bush 180 has a base inserting portion 182 formed to insulate the wire W and the base 150, and a through hole 181 for penetrating a wire facing the through hole of the base. The base inserting portion 182 is formed. In addition, the through hole 181 is positioned to face the through hole of the base.

The FPC 190 is coupled to the lower portion of the base 150 in the axial direction of the rotation shaft. In addition, the FPC 190 is formed with a land portion 191 for electrically connecting the wire (W), a through hole for penetrating the wire (W) is formed, formed in the FPC 190 The through hole is formed to face the through hole of the base 150.

In addition, the FPC 190 is formed such that an open portion (not shown) for injecting a bonding agent is connected to the through hole in order to form a bonding portion B on the base 150 and the insulating bush 180. In addition, the open portion has a slit shape connected to the through hole from the end of the FPC 190.

The bonding portion B is formed to cover the through hole 181 of the insulating bush 180, the through hole of the base 150, and the through hole of the FPC 190. Is formed. The bonding portion B is formed by injecting a bonding agent through the open portion of the FPC 190. In addition, the bonding agent injected to form the bonding portion may be implemented as a UV bond.

In addition, a soldering portion S is formed under the bonding portion B to electrically connect the wire W and the land portion 191 of the FPC 190.

Although the present invention has been described in detail through specific embodiments, this is for explaining the present invention in detail, and the connection module of the spindle motor FPC and coil according to the present invention and the spindle motor having the same are not limited thereto. It will be apparent that modifications and improvements are possible by those skilled in the art within the technical spirit of the present invention.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: FPC 11: Land part
12 through hole 13 open part
20: Base 30: Insulation Bush
40: wire 50: bonding portion
60: soldering part
100: spindle motor 110: rotation axis
120: hub 121: cylindrical portion
122: disc portion 123: side wall portion
124: sealing portion 130: magnet
140: sleeve 143: inclined portion
150: base 151: inclined portion
160: armature 161: core
162: coil 170: pulling plate
180: insulation bush 190: FPC

Claims (8)

Wire drawn from the coil of the armature;
An FPC having a land portion for electrically connecting with the wire and having a through hole formed therein;
A base formed so that the through hole of the wire faces the through hole of the FPC; And
Inserted into the base for insulation of the wire and the base, and includes an insulating bush formed with a through hole of the wire,
A bonding part covering a through hole of the insulating bush, a through hole of the base, and a through hole of the FPC is formed, and a soldering part for electrically connecting the land of the wire and the FPC is formed. Connection module.
The method according to claim 1,
The FPC has an open part into which a bonding agent is formed to form a bonding part, and the open part is connected to a through hole of a wire formed in the FPC.
The method according to claim 1,
The insulating bushing connection module of the FPC and coil for a spindle motor, characterized in that the base insert is formed to be inserted into the base.
The method according to claim 1,
The soldering portion of the spindle motor FPC and coil connection module, characterized in that formed to cover the through hole of the wire formed in the bonding portion and the FPC.
A rotating part including a rotating shaft, a hub and a magnet, and a fixing part including an armature consisting of a sleeve, a base, a core, and a coil, and oil, which is a working fluid, is injected to form a hydrodynamic bearing part between the rotating part and the fixing part,
The fixing part includes a wire drawn out from the coil of the armature, a land part coupled to the base and electrically connected to the wire, an FPC (flexible circuit board) having a through hole of the wire, and insulation of the wire and the base. Insulating bushes are inserted into the base for forming the through-hole of the wire, the through-hole of the wire is formed in the base, the through-hole of the base, the through-hole of the insulating bush and the through-hole of the FPC And a soldering part for electrically connecting the bonding part and the wire to the FPC.
The method according to claim 5,
The FPC has an open part into which a bonding agent is formed to form a bonding part, and the open part is connected to a through hole of a wire formed in the FPC.
The method according to claim 5,
The insulating bushing connection module of the FPC and coil for a spindle motor, characterized in that the base insert is formed to be inserted into the base.
The method according to claim 5,
The soldering portion of the spindle motor FPC and coil connection module, characterized in that formed to cover the through hole of the wire formed in the bonding portion and the FPC.
KR1020110140340A 2011-12-22 2011-12-22 Fpc and coil connection module for spindle motor and spindle motor having the same KR20130085571A (en)

Priority Applications (1)

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KR1020110140340A KR20130085571A (en) 2011-12-22 2011-12-22 Fpc and coil connection module for spindle motor and spindle motor having the same

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Application Number Priority Date Filing Date Title
KR1020110140340A KR20130085571A (en) 2011-12-22 2011-12-22 Fpc and coil connection module for spindle motor and spindle motor having the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022035108A1 (en) * 2020-08-11 2022-02-17 주식회사 엘지화학 Battery apparatus and manufacturing method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022035108A1 (en) * 2020-08-11 2022-02-17 주식회사 엘지화학 Battery apparatus and manufacturing method therefor

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