JP2006164459A - Insulator, information storage device, and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively absorb self-excitation vibration of a hard disk driving mechanism, etc. <P>SOLUTION: A HDD (hard disk drive) 21 as an information storage device has the hard disk driving mechanism 24 having a recording medium 22 and a recording and reproducing means 23 of information to the recording medium 22, a first case 25 which stores the hard disk driving mechanism 24, and a second case 26 which stores the first case 25, and an insulator 1A is interposed between the first case 25 and the second case 26. The insulator 1A is constituted by stacking first and second buffering members 11A, 12A with different resonance frequencies. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an insulator for a portable electronic device, in particular an insulator for protecting an electronic component vulnerable to shock and vibration such as a hard disk drive from the impact, an information storage device such as a hard disk drive using the insulator, and the insulator and the information storage device. It relates to the electronic equipment used.

  An electronic device using an information storage device such as a hard disk drive, which is vulnerable to shock and vibration, uses an insulator to protect the hard disk drive as the electronic component from shock and vibration.

  FIG. 12 shows an example of a hard disk drive as an information storage device. A hard disk drive (hereinafter referred to as HDD) 101 includes a first housing 105 that houses a hard disk drive mechanism 104 including a recording medium 102 indicated by a broken line and information recording / reproducing means 103 for the recording medium 102, and the first housing 105. And a second housing 106 that houses the second housing 106, and the second housing 106 is made up of a plurality of first and second insulators 107 ... 107, 108 ... 108 having different spring constants. The first housing 105 is supported.

  By the way, the recording density of a recording medium such as a magnetic disk used in the HDD 101 has been improved year by year, and accordingly, the disk has been rotated at a high speed, causing a problem of self-excited vibration during operation. That is, a so-called self-excited vibration is generated in the hard disk drive mechanism 104 by rotating the spindle of the hard disk drive mechanism 104 at a high speed to rotate the disk at high speed, or by a seek operation of the magnetic head, and the seek time becomes longer. This has been a cause of HDD performance degradation.

Therefore, conventionally, of the first and second insulators 107... 107, 108... 108, the first insulator 107 with a relatively small spring constant absorbs an impact applied to the first housing 105 from the outside. The self-excited vibration is suppressed by the second insulators 108... 108 having a large spring constant. (For example, refer to Patent Document 1).
JP 2004-127438 A

Conventionally, since the first and second insulators 107 and 108 are formed of a single type (single material) and a single layer, there are problems as described below. .
(1) The material used for the insulator has a specific resonance point. Therefore, when used as an insulator, it is necessary to avoid the resonance point or to attenuate itself when resonance occurs.
(2) In order to reduce the resonance frequency (to keep it low), the spring constant must be reduced. If the wall thickness is increased in order to reduce the spring constant of the insulator, the entire HDD becomes thicker accordingly. This is a result of going against the demands of downsizing and thinning. In addition, as the HDD becomes thicker, the electronic equipment that uses it becomes inevitably larger.

  It is an object of the present invention to provide an insulator capable of actively suppressing the occurrence of resonance due to the self-excited vibration, etc., a thin HDD using the insulator, and a small electronic device using the HDD. It was made.

  The invention of claim 1 is an insulator of an electronic device that is interposed between an electronic component and an electronic component support and absorbs vibration applied to the electronic component, and the insulator includes two or more types having different resonance frequencies. These buffer members were laminated.

  The invention of claim 2 is an information storage device detachably attached to the electronic device main body, the information storage device comprising a recording medium and a hard disk drive mechanism comprising information recording / reproducing means for the recording medium, A first housing that houses a hard disk drive mechanism, a second housing that houses the first housing, and an insulator interposed between the first housing and the second housing And the insulator is configured by stacking two or more types of buffer members having different resonance frequencies.

  According to a third aspect of the present invention, in the information storage device of the second aspect, the recording / reproducing means of the hard disk drive mechanism includes a magnetic head for recording / reproducing information with respect to the recording medium, and a head supporting the magnetic head. An arm and an actuator that rotates the head arm about an axis to move the magnetic head in a radial direction of the recording medium, and includes the first casing and the second casing. An insulator that absorbs an impact in the direction of rotation of the head arm is disposed between the two.

  According to a fourth aspect of the present invention, in the electronic device, the insulator of the first aspect is used as a cushioning material for an electronic component built in the device.

  The invention of claim 5 uses the information storage device of claim 2 as an information storage device built in the electronic device.

  The insulator according to claim 1 is formed by stacking two or more types of buffer members having different resonance points (resonance frequencies), so that one buffer member acts so as to cancel the resonance point of the other buffer member, thereby causing resonance. Can be actively attenuated. Thereby, the insulator can be made thinner than that of a single layer.

  The information storage device according to claim 2, wherein an insulator interposed between the first casing and the second casing is laminated with two or more types of buffer members having different resonance points (resonance frequencies). Since one buffer member acts so as to cancel the resonance point of the other buffer member, the resonance is actively damped to effectively suppress the self-excited vibration of the hard disk drive mechanism.

  In the information storage device according to claim 3, an insulator that absorbs an impact in the rotation direction of the head arm is disposed between the first housing and the second housing. Prevents the arm from moving unnecessarily.

  The electronic device according to claim 4 uses the insulator according to claim 1 as a buffer member for the electronic component built in the device, and thus effectively protects against the electronic component impact and vibration.

  Since the electronic device of claim 5 uses the information storage device of claim 2 as an information storage device built in the electronic device, it effectively absorbs the self-excited vibration of the hard disk drive mechanism and The performance of the electronic device can be improved by preventing the seek time of the magnetic head of the hard disk drive mechanism from becoming long.

  1 and 2 show an embodiment of an insulator 1 according to the present invention. FIG. 1 is a perspective view showing a usage state of the insulator 1, and FIG. 2 is an exploded perspective view of the insulator 1. As shown in FIG. 1, the insulator 1 is interposed between an HDD (Hard Disk Drive) 2 as an electronic component and an HDD support 3 of an electronic device, for example, and absorbs shock and vibration applied to the HDD 2.

  The insulator 1 is configured by stacking first and second buffer members 11 and 12 having different resonance points (resonance frequencies). As shown in FIG. 2, the first buffer member 11 is formed in a rectangular frame shape, and is attached so as to cover the outer peripheral edge of the HDD 2. Further, the second buffer member 12 is formed in a substantially rectangular shape, and is superimposed on the first buffer member 11 at the four corners of the HDD 2 so as to cover the first buffer member 11. It is installed in the wet state. Then, external impacts and vibrations are transmitted to the HDD 2 via the second buffer member 12 and the first buffer member 11, and self-excited vibrations generated by the HDD 2 itself are transmitted to the first buffer member. Absorption is performed by the member 11 and the second buffer member 12.

  The first and second buffer members 11 and 12 are formed of a foamable material such as elastomer / rubber or urethane foam, a metal having elasticity such as a leaf spring, a synthetic resin, or the like.

  When the first buffer member 11 is formed of, for example, a material having a resonance point as shown by a solid line in FIG. 3, the second buffer member 12 has the first buffer member as shown by a broken line in FIG. 1 buffer member 11 and a material having a resonance point different from each other. As a result, the resonance point of the first buffer member 11 is actively attenuated by the second buffer member 12, and the insulator 1 having the resonance characteristics in which the resonance point indicated by the two-dot chain line in FIG. Will be composed. In the above embodiment, the case where the vibration of the HDD 2 that generates self-excited vibration is suppressed by the insulator 1 as the electronic component has been described. However, when the electronic component does not generate self-excited vibration, the insulator 1 is used. Is designed taking into account the suppression of external impacts and vibrations. In this case as well, the insulator 1 stacks the first and second buffer members 11 and 12 having different resonance frequencies. It is constituted by. In the above-described embodiment, the insulator 1 is configured by superimposing the first and second buffer members 11 and 12, but the three or more buffer members having different resonance characteristics are stacked. The insulator 1 may be configured.

  4-11 shows the Example of the information storage device 21 incorporating the insulator 1A. 4 is a transverse sectional view of the information storage device 21, and FIG. 5 is an AA sectional view of FIG. As shown by a broken line in FIG. 4, the information storage device 21 includes a hard disk drive mechanism 24 having a recording medium 22 and information recording / reproducing means 23 for the recording medium 22, and a first hard disk drive mechanism 24 that houses the hard disk drive mechanism 24. And a second casing 26 that houses the first casing 25, and the insulator 1 </ b> A is provided between the first casing 25 and the second casing 26. Is interposed, and is configured as an HDD (hard disk drive) with a built-in insulator.

  The recording / reproducing means 23 includes a magnetic head 23a for recording / reproducing information on the recording medium 2, a head arm 23b supporting the magnetic head 23a, and rotating the head arm 23b about a shaft 23c. And an actuator 23 d that moves the magnetic head 23 b in the radial direction of the recording medium 2.

  The insulator 1A is configured by stacking first and second buffer members 11A and 12A having different resonance frequencies, like the insulator 1. The first buffer member 11 </ b> A is formed in a rectangular frame shape, and is attached so as to cover the outer peripheral edge of the first housing 25. Further, the second buffer member 12A is formed in a substantially quadrangular shape, and covers the first buffer member 11A so that the first buffer member is provided at the four corners of the first housing 25. It is attached in a state of being superimposed on 12A. Then, the self-excited vibration generated when the spindle motor of the hard disk drive mechanism 24 or the magnetic head seeks is generated between the first casing 25 and the second casing 26 in the first and second casings 26. It is absorbed and attenuated by an insulator 1A comprising the buffer members 11A and 12A.

  When the second buffer member 12A is thin and formed of a hard resin material, the inner surface of the second casing 26 is coated with resin ink or the like as shown in FIG. The second buffer member 12A may be formed. Further, as shown in FIG. 7, the second buffer member 12A may be formed on the entire outer surface of the first buffer member 11A by two-color molding. In addition, as shown in FIG. 8, a second buffer member 12A may be formed on a part of the outer surface of the first buffer member 11A. The second buffer member 12A may be formed by increasing the thickness of a part of the first buffer member 11A.

  As shown in FIG. 4, the head arm 23b of the recording / reproducing means 23 is configured to record / reproduce information to / from the recording medium 2 by rotating in the direction of arrow a about the shaft 23c. Therefore, it is vulnerable to the impact in the direction of arrow a. Therefore, as shown in FIG. 9, a third buffer member 31 having a larger spring constant than the first and second buffer members 11A and 12A is arranged in the rotational direction of the head arm 23b, so that the head arm It may be configured to absorb and mitigate the impact in the rotational direction of 23b.

  Further, as shown in FIG. 10, a fourth buffer member 41 having a larger spring constant than the first and second buffer members 11A and 12A is attached to the outer periphery of the second casing 26, and the fourth By attaching the information storage device 21 to the electronic device main body through the buffer member 41, the shock from the outside is absorbed by the fourth buffer member 41, and the spindle motor or magnetic head seek of the hard disk drive mechanism 24 is absorbed. The self-excited vibration generated at times may be absorbed and attenuated by the insulator 1A including the first and second buffer members 11A and 12A.

  As shown in FIG. 11, a connector 30 is provided on one side of the information storage device 21, and the information storage device 21 is used by connecting to an electronic device via the connector 30. Is done. In addition, video equipment such as a television using the insulator 1 and the information storage device 21 of the present invention, audio equipment such as a music player, or information processing equipment such as personal computers and portable mobile devices, and electronic equipment such as multimedia equipment are HDDs. The self-excited vibration can be effectively absorbed to prevent the self-excited vibration from adversely affecting the seek of the magnetic head.

The perspective view which shows the use condition of the insulator of this invention. The disassembled perspective view of the insulator of this invention. FIG. The cross-sectional view of the information storage device of the present invention. AA sectional drawing of FIG. Sectional drawing of the other Example of the information storage device of this invention. Sectional drawing of the other Example of the information storage device of this invention. Sectional drawing of the principal part of the other Example of the information storage device of this invention. Sectional drawing of the other Example of the information storage device of this invention. Sectional drawing of the other Example of the information storage device of this invention. The perspective view of the information storage device of the present invention. Explanatory drawing of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Insulator, 2 ... Hard disk (electronic component), 3 ... Hard disk support body (electronic component support body), 11, 11A ... 1st buffer member, 12, 12A ... 2nd buffer member, 21 ... Information storage device, DESCRIPTION OF SYMBOLS 22 ... Recording medium, 23 ... Information recording / reproducing means, 23a ... Magnetic head, 23b ... Head arm, 23c ... Shaft, 23d ... Actuator, 24 ... Hard disk drive mechanism, 25 ... 1st housing | casing, 26 ... 2nd Enclosure.

Claims (5)

An insulator of an electronic device that is interposed between an electronic component and an electronic component support and absorbs vibration of the electronic component,
The insulator for an electronic apparatus, wherein the insulator is configured by stacking two or more types of buffer members having different resonance frequencies. An information storage device used by being attached to an electronic device body,
A hard disk drive mechanism comprising a recording medium and information recording / reproducing means for the recording medium, a first housing housing the hard disk drive mechanism, a second housing housing the first housing, An insulator interposed between the first casing and the second casing;
The insulator is configured by stacking two or more types of buffer members having different resonance frequencies. The recording / reproducing means of the hard disk drive mechanism includes a magnetic head for recording / reproducing information to / from the recording medium, a head arm supporting the magnetic head, and rotating the head arm about an axis to And an actuator for moving a magnetic head in a radial direction of the recording medium, and absorbing an impact in a rotation direction of the head arm between the first casing and the second casing. The information storage device according to claim 2, wherein: is arranged. An electronic device comprising the insulator according to claim 1, wherein an electronic component built in the insulator is protected from impact and vibration. An electronic device comprising the information storage device according to claim 2.

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