WO2003017278A1 - Structure de montage d'une unite de disque dur dans un tiroir - Google Patents

Structure de montage d'une unite de disque dur dans un tiroir Download PDF

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Publication number
WO2003017278A1
WO2003017278A1 PCT/JP2001/007124 JP0107124W WO03017278A1 WO 2003017278 A1 WO2003017278 A1 WO 2003017278A1 JP 0107124 W JP0107124 W JP 0107124W WO 03017278 A1 WO03017278 A1 WO 03017278A1
Authority
WO
WIPO (PCT)
Prior art keywords
shelf
disk drive
case
connector
support springs
Prior art date
Application number
PCT/JP2001/007124
Other languages
English (en)
Japanese (ja)
Inventor
Nobuyoshi Yamaoka
Misao Inoke
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2001/007124 priority Critical patent/WO2003017278A1/fr
Priority to JP2003522097A priority patent/JPWO2003017278A1/ja
Publication of WO2003017278A1 publication Critical patent/WO2003017278A1/fr

Links

Classifications

    • 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
    • G11B33/125—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a plurality of recording/reproducing devices, e.g. modular arrangements, arrays of disc drives
    • G11B33/127—Mounting arrangements of constructional parts onto a chassis
    • G11B33/128—Mounting arrangements of constructional parts onto a chassis of the plurality of recording/reproducing devices, e.g. disk drives, onto a chassis

Definitions

  • the present invention relates to a structure for mounting a hard disk drive (HDD) on a shelf.
  • HDD hard disk drive
  • HDDs are a type of external storage device for computers.
  • the track pitch for data storage is becoming smaller.
  • HDDs are going to have even larger capacities and higher speeds in the future, so the minute fluctuations of the disk drive will violate adjacent tracks on the disk, resulting in sudden misreading or data corruption. May cause off-track failure.
  • This off-track failure can also be caused by the vibration of the disk drive itself or the arm of the actuator.
  • Servers such as global servers, high-performance computer (HPC) servers, filers, and personal computer (PC) servers are connected to many lower-level computers via a communication network such as a local area network (LAN). Therefore, a so-called active disk drive unit is used, which allows the disk drive unit to be easily inserted into and removed from the shelf containing the disk drive unit while the server is turned on.
  • the active disk drive unit consists of a disk drive, such as a hard disk drive, and a case (bracket) that houses the disk drive. The power to the server can be maintained without interrupting power to the server. Inserted and removed.
  • Figure 1 shows a conventional HDD mounting structure on a shelf.
  • Reference numeral 2 denotes a hard disk drive (HDD) unit, which includes a case (bracket) 6 and an HDD 4 housed in the case 6 just to be fitted.
  • Case 6 is formed of, for example, aluminum or an aluminum alloy.
  • the HDD has a connector 8 at one end.
  • Reference numeral 10 indicates a shelf assembly, and a plurality of guides are provided.
  • the shelf 12 includes a shelf 12 having a drain, and a back wiring board 14 fixed to one end of the shelf 12.
  • the connector 16 is mounted on the back wiring board 14.
  • a plurality of support springs 18 formed of a leaf spring or the like are fixed to the upper and lower surfaces of the case 6.
  • the connector 8 mates with the connector 16. Since the backup board 14 is connected to the server via a LAN cable or the like, the HDD 4 housed in the shelf assembly 10 is connected to the server via the back wiring board 14. Become. HDD 4 is driven by a command from the server. At this time, the support spring 18 is pressed against the guide rail formed on the shelf 12 and the vibration of the HDD 4 is reduced by utilizing the spring action.
  • the shelf assembly 10 is mounted on the rack 20, a part of which is shown, and is fixed to the rack 20 by a plurality of screws 21.
  • the gasket between the guide rail of the shelf and the active disk drive unit cannot be completely absorbed. Due to the vibration of the HDD spindle motor or the cooling fan and the power of the power supply, etc., the head deviation may be amplified, and there was a problem that the head could not avoid the off-track failure.
  • an object of the present invention is to absorb the backlash between the disk drive unit and the guide rail of the shelf, and to greatly reduce the vibration generated in the disk drive.
  • a structure for mounting a disk drive having a first connector on a shelf the case having an upper surface and a lower surface, for accommodating the disk drive; and a plurality of guide rails;
  • a shelve assembly including a first end and a second end, a shelve assembly fixed to the second end of the shelve, and a back wiring board having a second connector; fixed to upper and lower surfaces of the case;
  • At least a pair of support springs the case accommodating the disk drive is inserted into the shelf from a first end side, the first and second connectors are fitted, and the support springs are mounted on the shelf.
  • Mounting structure to Erufu is provided.
  • the fixing means includes a projection formed integrally with each support spring, and a groove formed on the inner surface of the shelf in which the projection is fitted.
  • a mounting structure of a disk drive having a first connector on a shelf, each of which has an upper surface and a lower surface formed with tap holes, and is provided for accommodating the disk drive.
  • a case a plurality of guide rails, at least a pair of first holes, a shelf having a first end and a second end, and a back-wire ring board fixed to the second end of the shelf and having a second connector.
  • the first and second connectors When the first and second connectors are inserted into a shelf and the support springs are pressed against the inner surface of the shelf, the first and second connectors are aligned. And at least one pair of screws fastened to the tap hole through the second hole and the second hole, the mounting structure of the disk drive to the shelf is provided.
  • a structure for mounting a disk drive having a first connector and an actuator on a shelf the case having an upper surface and a lower surface, and accommodating the disk drive.
  • a shelf assembly including a back-wiring pod; at least a pair of support springs fixed to upper and lower surfaces of the case; and the case accommodating the disk drive, wherein the case accommodates the disk drive from a first end side.
  • the mounting structure of the disk drive on the shelf is provided.
  • FIG. 1 is a cross-sectional view showing a mounting structure of a conventional hard disk drive on a shelf
  • FIG. 2 is a perspective view showing a mounting structure of a hard disk drive of the present invention on a shelf;
  • Fig. 3 shows the frequency response based on the simulation when the Young's modulus of the support spring is changed
  • FIG. 4 is a sectional view of the first embodiment of the present invention.
  • FIG. 5 is an exploded perspective view of the first embodiment
  • FIG. 6 is a sectional view of a second embodiment of the present invention.
  • FIG. 7 is a schematic configuration diagram of a third embodiment of the present invention.
  • FIG. 8 is a diagram showing the material properties (Young's modulus) of the support spring that can be used in the third embodiment
  • FIG. 9 is a flowchart for controlling the rigidity of the support spring in the third embodiment.
  • FIG. 2 there is shown a perspective view of a state in which a hard disk drive unit (HDD unit) 22 is inserted and mounted in a Chenoref assembly 28.
  • the HDD unit 22 has a roughly U-shaped case (placket) 26 and a just-fitted case 26.
  • Case 26 is formed of aluminum or an aluminum alloy.
  • a plurality of support springs 34 formed of, for example, leaf springs are fixed to the upper and lower surfaces of the case 26.
  • the shelf assembly 28 includes a box-shaped shelf 30 having an open front and back, and a back wiring board (not shown) fixed to a rear end of the shelf 30. As shown in the conventional example of FIG. 1, the back wiring board is equipped with a connector that is fitted to the HDD 24 connector.
  • the shelf 30 has an upper wall 30a, a lower wall 30b, and a pair of side walls 30c, 30d connecting the upper wall 30a and the lower wall 30b.
  • a plurality of guide rails 32 for guiding the insertion and removal of the HDD unit 22 are formed on the lower side of the upper wall 30a and the upper side of the low wall 30b.
  • the shelf 30 is made of, for example, stainless steel having a thickness of 1.0 mm.
  • the guide rail 32 is formed by cutting and raising a part of the upper wall 30a or the lower wall 30b.
  • the hard disk drive has the following parameters.
  • V CM torque 0.08 N m / A
  • the coefficient of friction / between the supporting spring and the shelf is 0.003 for curve a, 0.05 for curve b, and 0.22 for curve c. From the simulation results shown in Fig.
  • FIG. 4 is a cross-sectional view of the first embodiment of the present invention based on the above findings.
  • FIG. 5 is an exploded perspective view of the first embodiment.
  • a support spring 34 formed of a leaf spring is fixed to a case 26 with screws 38.
  • the support spring 34 has a hole 42, and a cap hole 36 is formed in the case 26 in alignment with the hole 42 as shown in FIG. Further, push the HDD unit 22 fully into the shelf 30 so that the connector of the HDD 24 and the connector of the back wiring board are aligned with the hole 42 of the support spring 34 when the connector of the HDD 24 and the connector of the back wiring board are fitted.
  • a hole 40 is formed in the shell 30.
  • the HDD unit 22 is pushed fully into the shelf 30 so that the connector of the HDD 24 and the connector mounted on the pack wiring pod of the shelf assembly 28 are fitted.
  • the screw 44 is fastened to the tap 6 36 of the case 26 through the hole 40 of the shelf 30 and the hole 42 of the support spring 34.
  • the rigidity of the support spring 34 is increased, and the vibration of the HDD 24 caused by the rotation of the HDD 24 in the spindle mode can be significantly suppressed. This makes it possible to prevent off-track failure of the HDD 24 head.
  • FIG. 6 shows a sectional view of the second embodiment of the present invention.
  • a projection 48 is integrally formed on a leaf spring 46 fixed to the case 26 of the HDD unit 22. Then, the HDD unit 22 is inserted into the shelf 30 at any time, and when the connector of the HDD 24 and the connector mounted on the back wiring board of the shelf assembly 28 are fitted, the support spring A groove 50 is formed in the shell 30 so that the protrusion 48 of 46 just fits. Since the projections 48 of the support springs 46 fit into the grooves 50 provided in the shelf 30, the support springs 46 are firmly pressed against the inner surface of the shelf 30 without slipping.
  • the shelf 30 ′ may be made of sheet metal, but is preferably formed of a resin mold having low thermal conductivity in order to minimize heat conduction from the heater 64 to the HDD 24 via the support spring 62. I like it.
  • the heater 64 is embedded in the guide rail of the shelf 30 ′ so as to be located near the spring 62. Preferably, the heater 64 comes into contact with the support spring 62 when the HDD unit 22 is completely inserted. Further, a temperature sensor 66 for detecting the temperature of the support spring 62, such as a thermistor, is attached to the shelf 30 '.
  • the support spring 62 is preferably formed from a shape memory alloy having high thermal conductivity. As a material property of the support spring 62, it is necessary that the Young's modulus (support spring rigidity) increases as the temperature rises as shown in FIG.
  • heater 64 is formed of Cu.
  • the case 26 ′ is preferably formed of a resin mold having low thermal conductivity.
  • a position monitoring mechanism 70 such as an acceleration sensor is mounted on the tip of the actuator arm 54 of the HDD 24.
  • the output signal of the temperature sensor 66 and the position monitoring mechanism ⁇ 0 is input to a control device 72 such as an MPU, and in response to these input signals, the control device ⁇ 2 is connected to the heater power supply 6 connected to the heater 64.
  • a part of the shelf assembly 28 is mounted on a rack 70 shown in the drawing, and is fixed to the rack 70 by a plurality of screws 72.
  • step S10 the amplitude of the tip of the actuator arm 54 is detected by the position monitoring mechanism 70 such as an acceleration sensor. This amplitude is input to the control device 72, and it is determined in step S12 whether or not the amplitude is equal to or less than the off-track budget. If the amplitude is larger than the off track budget, the process proceeds to step S14, and the heater power supply 68 is turned on. As a result, the heater 64 is heated, and the temperature of the support spring 62 in contact with the heater 64 increases. In step S16, the temperature of the support spring 62 is detected by the temperature sensor 66, and At 18 it is determined whether or not the detected temperature T is lower than T 1 imit.
  • the position monitoring mechanism 70 such as an acceleration sensor.
  • step S18 If the determination in step S18 is affirmative, the process returns to step S10, and the routine from step S10 to step S18 is performed until the amplitude is determined to be equal to or less than the off-track budget in step S12. repeat. If it is determined in step S12 that the amplitude is equal to or smaller than the off-track budget, the process proceeds to step S20, and the initialization is completed. If it is determined in step S18 that the detected temperature T is higher than Tlimt, the support spring 62 is overheated, and this routine ends.
  • the off-track budget of each HDD can be achieved with a single control device by providing multiple channels for the amplitude at the tip of the actuator arm of each HDD and the temperature information of the corresponding support spring. it can.
  • the computer system monitoring device be able to input the requirement when the system power is turned on, as to how much the support spring temperature characteristic can be varied.
  • the present invention is configured as described in detail above, self-vibration caused by high-speed rotation of the spindle drive of the hard disk drive and / or head sway caused by vibration applied from the computer system to the hard disk drive mounting portion is prevented. Vibration can be suppressed below the target off-track level without being amplified, and head off-track failure can be effectively prevented.

Landscapes

  • Mounting Of Printed Circuit Boards And The Like (AREA)
  • Moving Of Heads (AREA)

Abstract

Structure de montage d'une unité de disque dur dans un tiroir, cette structure comprenant une unité de disque dur possédant un premier connecteur, un boîtier pour le stockage de l'unité de disque dur, un ensemble tiroir comprenant un tiroir pourvu d'une pluralité de rails de guidage et un panneau de câblage arrière pourvu d'un second connecteur fixé à une extrémité du tiroir, au moins une paire de ressorts de support fixés aux surfaces supérieure et inférieure du boîtier et un mécanisme de fixation destiné à fixer les ressorts de support au tiroir lorsque le boîtier renfermant l'unité de disque dur est inséré dans le tiroir. Les premier et second connecteurs s'adaptent l'un dans l'autre et les ressorts de support sont comprimés contre la surface interne du tiroir. Le mécanisme de fixation comprend également une pièce saillante intégrée aux ressorts de support et une gorge formée dans la surface interne du tiroir et accueillant la pièce saillante.
PCT/JP2001/007124 2001-08-20 2001-08-20 Structure de montage d'une unite de disque dur dans un tiroir WO2003017278A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2001/007124 WO2003017278A1 (fr) 2001-08-20 2001-08-20 Structure de montage d'une unite de disque dur dans un tiroir
JP2003522097A JPWO2003017278A1 (ja) 2001-08-20 2001-08-20 ディスクドライブのシェルフへの搭載構造

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/007124 WO2003017278A1 (fr) 2001-08-20 2001-08-20 Structure de montage d'une unite de disque dur dans un tiroir

Publications (1)

Publication Number Publication Date
WO2003017278A1 true WO2003017278A1 (fr) 2003-02-27

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PCT/JP2001/007124 WO2003017278A1 (fr) 2001-08-20 2001-08-20 Structure de montage d'une unite de disque dur dans un tiroir

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WO (1) WO2003017278A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746601A1 (fr) * 2004-02-23 2007-01-24 Orient Instrument Computer Co., Ltd Unit de connexion pour dispositif d'enregistrement de donnees
JP2012231591A (ja) * 2011-04-26 2012-11-22 Denso Corp 電力変換装置
JP2012243310A (ja) * 2011-05-24 2012-12-10 Kofukin Seimitsu Kogyo (Shenzhen) Yugenkoshi サーバーキャビネット及びサーバーシステム
JP2013246865A (ja) * 2012-05-25 2013-12-09 Ennoconn Corp ハードディスク用支持フレーム
JPWO2014038085A1 (ja) * 2012-09-10 2016-08-08 三菱電機株式会社 電子機器の仮固定構造
US10157641B2 (en) 2015-04-24 2018-12-18 Nec Platforms, Ltd. HDD holding device, HDD unit, and information processing apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0412278U (fr) * 1990-05-22 1992-01-31
JPH0513090U (ja) * 1991-07-31 1993-02-19 日本電気エンジニアリング株式会社 電気部品の耐衝撃実装構造
JPH0950689A (ja) * 1995-08-04 1997-02-18 Matsushita Electric Ind Co Ltd 磁気記録装置のシャーシ構造
JPH09204766A (ja) * 1995-11-20 1997-08-05 Matsushita Electric Ind Co Ltd 防振支持機構を有する装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11238368A (ja) * 1998-02-19 1999-08-31 Sony Corp 取付部材の記録再生装置への支持構造
JP2000011623A (ja) * 1998-06-16 2000-01-14 Nec Eng Ltd 磁気ディスクユニット
JP2001057066A (ja) * 1999-08-13 2001-02-27 Fujitsu Ltd 電子機器および記録ディスク駆動装置ユニット

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0412278U (fr) * 1990-05-22 1992-01-31
JPH0513090U (ja) * 1991-07-31 1993-02-19 日本電気エンジニアリング株式会社 電気部品の耐衝撃実装構造
JPH0950689A (ja) * 1995-08-04 1997-02-18 Matsushita Electric Ind Co Ltd 磁気記録装置のシャーシ構造
JPH09204766A (ja) * 1995-11-20 1997-08-05 Matsushita Electric Ind Co Ltd 防振支持機構を有する装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746601A1 (fr) * 2004-02-23 2007-01-24 Orient Instrument Computer Co., Ltd Unit de connexion pour dispositif d'enregistrement de donnees
EP1746601A4 (fr) * 2004-02-23 2007-05-30 Orient Instr Comp Co Ltd Unit de connexion pour dispositif d'enregistrement de donnees
JP2012231591A (ja) * 2011-04-26 2012-11-22 Denso Corp 電力変換装置
JP2012243310A (ja) * 2011-05-24 2012-12-10 Kofukin Seimitsu Kogyo (Shenzhen) Yugenkoshi サーバーキャビネット及びサーバーシステム
JP2013246865A (ja) * 2012-05-25 2013-12-09 Ennoconn Corp ハードディスク用支持フレーム
US8873232B2 (en) 2012-05-25 2014-10-28 Ennoconn Corporation Supporting frame for hard disk drive
JPWO2014038085A1 (ja) * 2012-09-10 2016-08-08 三菱電機株式会社 電子機器の仮固定構造
US10157641B2 (en) 2015-04-24 2018-12-18 Nec Platforms, Ltd. HDD holding device, HDD unit, and information processing apparatus

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