JP2009070530A - Loading case for electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively control vibration caused in electronic equipment built in a loading case of the electronic equipment. <P>SOLUTION: There is provided a chassis 110 of a hard disk apparatus 160 having a vibration-proof structure, wherein the hard disk apparatus 160 has a plurality of dampers 140 having elasticity provided at a pair of opposite side surfaces, and the chassis 110 has impact absorbing parts 111 at opposite side surfaces of the hard disk apparatus 160, where the dampers 140 are not provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mounting case for an electronic device, and more particularly, to a mounting case for an electronic device having a structure in which vibration from the outside of the mounting case to the electronic device is suppressed by a damper and a damping member.

  2. Description of the Related Art Conventionally, techniques for protecting and using precision electronic devices from vibration and impact have been developed. For example, as a precision electronic device as described above, there is an increasing demand for protecting a hard disk device, which is a recording / reproducing device capable of reading and writing a large amount of data at high speed, while protecting it from vibrations and shocks. ing.

  In order to realize a large recording capacity, the hard disk device includes a magnetic head which is a recording / reproducing means for recording / reproducing information at an extremely high density. For example, in a hard disk, a high-density information is recorded by forming a fine recording area on a disk-shaped disk, positioning the magnetic head with respect to the recording area on the disk with high accuracy, and reading and writing information, Playing. In order to realize a large capacity, information is recorded / reproduced with a very small distance between the magnetic head and the disk. In other words, in a large-capacity recording / reproducing apparatus such as a hard disk device, the reproducibility of the position of the magnetic head in operation is extremely important, and high positioning accuracy is required.

  For this reason, it is known that hard disk drives are vulnerable to external vibrations and shocks. This is because if an external vibration or impact is applied, the position of the magnetic head is shaken and accurate recording / reproduction cannot be performed. In addition, when vibration or impact increases, the magnetic head may come into contact with the disk, physically damaging the magnetic head or disk, and recording / reproducing may not be performed. For this reason, a mechanism has been realized in which the magnetic head moves to a position away from the disk when recording and reproduction are not performed today. Also, a mechanism has been realized in which the magnetic head moves to a position away from the disk when the hard disk device senses falling gravity or shock.

  In addition, as a technique for reducing the influence of vibration generated inside the hard disk device, the electrical frequency is connected to the FPC (Flexible Printed Circuit), and a cavity (slit) is provided in the FPC to reduce the natural frequency of a specific frequency. A technique for reducing this is known (Patent Document 1). Patent Document 1 discloses a technique for stabilizing the operation of a hard disk device by controlling the natural frequency at a specific frequency of vibration energy physically generated in a hard disk drive by the shape of a slit provided in the FPC.

  On the other hand, the hard disk device is susceptible to vibration during operation, but is also useful for carrying a large recording capacity. For example, a portable computer recording / reproducing device such as a notebook personal computer or a vehicle-mounted road navigation system recording / reproducing device is now widely used as a means for carrying large amounts of electronic information. In this way, when using the hard disk device in an environment in which vibration is generated, a technique for providing a damper for absorbing vibration around the hard disk device to make it difficult for external vibration to be transmitted to the hard disk device itself is known. Yes.

  In addition, the hard disk device as described above is also used as a replaceable large-capacity recording medium such as a conventional recording medium such as a compact disk (CD) or a DVD (Digital Versatile Disk). This is realized by a method in which an HDD unit including a hard disk device includes an attachment / detachment mechanism and is attached to / detached from a housing as in the information storage device disclosed in Patent Document 2, for example. In addition, as in the hard disk device disclosed in Patent Document 3, a detachable HDD unit includes vibration damping means, and a technique for carrying a large amount of electronic information in a detachable manner is also known.

By using such a technique, a recording / reproducing apparatus that reads and replaces a large recording capacity, which is difficult to realize with a CD or a DVD, by freely attaching and detaching, and realizing high-speed reading and writing is realized.
Japanese Patent Laying-Open No. 2003-187537 (published July 4, 2003) Japanese Patent Laid-Open No. 11-149653 (published on June 2, 1999) JP 2003-314613 A (published on November 6, 2003)

  However, the above-described conventional configuration has a problem that it is difficult to effectively converge and suppress vibration generated in the built-in electronic device.

  Conventionally, vibration generated outside the electronic device unit is transmitted to the built-in electronic device, and when the electronic device vibrates, vibration damping means such as a damper provided between the electronic device unit and the mounting case of the electronic device. This attenuated the vibration of the electronic equipment.

  However, in order to quickly converge the vibration attenuation by the vibration attenuating means, it is necessary to increase the elasticity of the vibration attenuating means, and it is difficult to obtain an effect of effectively reducing the vibration. In addition, when the elasticity of the vibration damping means was reduced to reduce the vibration, the vibration was not easily attenuated. For this reason, a method using a large number of vibration damping means has also been performed.

  FIG. 5 is a plan view of the HDD unit 500 disclosed in Patent Document 3. As shown in FIG. The HDD unit 500 illustrated in FIG. 5 is configured to be installed in the HDD unit 500 by vibration damping means 541 provided on the bottom surface of the hard disk device 560 and held in the chassis 510 by a vibration damping damper 542. A method using multiple vibration damping means is disclosed.

  FIG. 6 is a plan view of the HDD unit disclosed in Patent Document 3 when viewed from the side. In the HDD unit 500 shown in FIG. 6, the hard disk device 560 is installed by vibration damping means 541 provided on the bottom surface of the chassis 510. In addition, vibration-proof dampers 542 are provided on the front side and the other side of the sheet (the direction of the x-axis described in FIGS. 5 and 6).

  At this time, since the vibration damping means 541 is provided on the bottom surface of the hard disk device 560 and the vibration damping damper 542 is provided on the opposite side surface of the hard disk device 560, each of the vibration damping means 541 and the vibration damping damper 542 is provided. There is a problem that the vibration damping action is not sufficiently exhibited.

  For example, when the HDD unit 500 moves in the vertical direction (the z-axis direction described in FIGS. 5 and 6), the hard disk device 560 is shaken in the vertical direction and the vibration damping effect of the vibration damping means 541 and the vibration damping damper 542 is used. Movement is suppressed.

  On the other hand, when shaken in the left-right direction or the front-rear direction (the x-axis direction and the y-axis direction shown in FIGS. 5 and 6, respectively), the hard disk device 560 swings left and right or front-rear with the vibration damping means 541 as the axis. At the same time, the vibration is suppressed by the vibration damping effect of the vibration damping damper 542. At this time, in the left-right direction or the front-rear direction of the HDD unit, the movement of the hard disk device 560 incorporated therein is limited by the vibration damping means 541 provided on the bottom surface of the hard disk device 560.

  Even in the configuration in which the vibration damping means is provided on the side surface of the hard disk device 560, it is difficult to control the vibration only by the elasticity of the vibration damping means as described above.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a mounting case for an electronic device having a structure that effectively suppresses or cushions vibration generated in the built-in electronic device. There is.

  In order to solve the above problems, an electronic device mounting housing according to the present invention is an electronic device mounting housing, and the electronic device has a plurality of vibration damping means having elasticity on a pair of opposing side surfaces. The mounting housing includes a damping means on a surface facing the side surface of the electronic device where the vibration damping means is not provided.

  According to said structure, the electronic device is installed in the mounting housing | casing by providing the some vibration damping means which has elasticity in a pair of side surface. The elastic vibration attenuating means can reduce the vibration frequency of the electronic device mounted inside the mounting casing while reducing the vibration applied to the mounting casing from the outside. Generally, when the vibration frequency is lowered, the amplitude of the swing increases, but in the present invention, the vibration control means is provided on the side surface of the mounting housing with respect to the side surface on which the vibration damping means is not provided. Can be effectively suppressed by contacting the damping member. Further, the vibration damping means can effectively prevent the electronic device from coming into direct contact with the mounting housing.

  The embodiment of the present invention will be described below with reference to FIGS.

  In the following embodiments, a case where a hard disk device is used as an embodiment of the built-in electronic device will be described. However, the built-in electronic device is applicable to all electronic devices in which it is not preferable to transmit external vibration. Can do.

  1A to 1D are a plan view and a cross-sectional view showing an HDD unit 100 according to this embodiment. In the present embodiment, a case where the HDD unit 100 has a rectangular parallelepiped shape is described, but the HDD unit may be formed in other shapes.

  FIG. 1A is a plan view of the HDD unit 100 according to the present embodiment as viewed from above, and is described together with an electronic device mounting apparatus 200 for mounting the HDD unit 100. FIG. 1B is a side view of the HDD unit 100 of the present embodiment. 1C is a cross-sectional view taken along line A-A ′ of FIG. 1A, and FIG. 1D is a plan view of the HDD unit 100 according to the present embodiment as viewed from the front. FIG. 2 is a perspective view showing the HDD unit 100 of the present embodiment.

  The electronic device mounting apparatus 200 of the present embodiment is a device for mounting the HDD unit 100 of the present embodiment, and includes a connector 230 for electrically connecting the HDD unit 100 of the present embodiment. The connector 230 is a connector that is electrically connected to a connector connecting portion 130 described later, and a connector having a known structure can be used.

  The HDD unit 100 of the present embodiment can be used as a recording medium that carries a large recording capacity, for example. Therefore, the electronic device mounting apparatus 200 may be any apparatus that can attach and remove the HDD unit 100 as its recording medium. Such a device can be used for a known device such as an external recording / reproducing device of a portable computer such as a stationary computer or a notebook personal computer, and a recording / reproducing device of an in-vehicle road navigation system. In addition, the HDD unit 100 and the electronic device mounting apparatus 200 can be connected and fixed using a known method such as screwing.

  The HDD unit 100 of this embodiment includes a chassis 110, an FPC harness portion 120, a connector connection portion 130, a damper 140, a front grill 150, and a hard disk device 160.

  The chassis 110 forms a basic skeleton structure of the HDD unit 100 of the present embodiment together with the connector connecting portion 130 and the front grill 150. The chassis 110 can be formed in the same manner as a known hard disk mounter or the like. For example, you may form with the alloy containing iron, aluminum, etc. Further, the outer shape or the like may be formed in accordance with a hard disk device 160 or the like used as described later, or may be formed in accordance with the shape of the electronic device mounting apparatus 200 in which the HDD unit 100 is mounted.

  The HDD unit 100 according to the present embodiment includes an impact absorbing unit 111. The shock absorbing unit 111 is provided on the surface of the shock absorbing frame 112 provided on the chassis 110, and is formed so that the hard disk device 160 does not directly contact the chassis 110. The positions where the shock absorbing portion 111 and the shock absorbing frame 112 are provided will be described later in detail.

  The connector connection unit 130 includes a connector 131 (mounting housing connector) for electrically connecting the HDD unit 100 of the present embodiment to the electronic device mounting apparatus 200. The connector 131 of the present embodiment is connected to an FPC harness portion 120 formed by an FPC (Flexible Printed Circuit) formed in a film shape. Although details of the FPC harness portion 120 will be described later, in the connector 131 of the present embodiment, the film-like FPC of the FPC harness portion 120 is connected to the connector 131 in a planar manner. Further, the connector 131 of the present embodiment is formed as a planar substrate.

  In the present embodiment, the surface of the connector 131 and the joint surface of the connector 131 and the FPC harness portion 120 are parallel to the disk surface of the hard disk device 160.

  The connector 131 is also electrically connected to a connector 161 (electronic device connector) provided in the hard disk device 160 via the FPC harness portion 120.

  The front grill 150 is provided on the side surface of the chassis 110 facing the side on which the connector connecting portion 130 is provided in the HDD unit 100. In the HDD unit 100 of the present embodiment, the front grill 150 is provided with a ventilation slit 151 that can send cooling air to the hard disk device 160 provided inside the chassis 110.

  The HDD unit 100 of the present embodiment can use a hard disk device having a shape currently distributed in the market. A dedicated hard disk device can also be used. The chassis 110 may have any shape that can fix these hard disk devices via a damper 140 described later, and can be formed by a known method.

  The hard disk device 160 mounted on the HDD unit 100 of the present embodiment can be mounted with standard products such as 2.5 inch type and 3.5 inch type currently distributed in the market, Furthermore, a hard disk device or the like manufactured exclusively can be freely attached.

  In the HDD unit 100 of the present embodiment, the connector 161 provided in the hard disk device 160 and the connector 131 provided in the connector connection unit 130 are physically connected by the FPC harness unit 120 and are electrically connected. It is connected to the. In the HDD unit 100 of the present embodiment, the FPC harness portion 120 is formed by an FPC (Flexible Printed Circuit) formed in a film shape. For the FPC, a member formed by a known method can be used.

  The FPC harness portion 120 of the present embodiment includes one or a plurality of slits 121 between the connector 161 and the connector 131. The slit 121 may be provided along the direction extending from the connector 161 to the connector 131, for example. Thus, the elasticity and the natural frequency which the FPC harness part 120 has can be suitably set by the slit 121 formed in the FPC harness part 120. That is, the slit 121 may be formed so as to have elasticity and a natural frequency that can suppress vibration of the hard disk device 160 with which the FPC harness portion 120 is in contact.

  The FPC harness portion 120 of the present embodiment connects the hard disk device 160 and the connector 131 with a sufficient length, and the FPC harness portion 120 is gently curved between the hard disk device 160 and the connector 131. It is preferable that they are connected. For example, between the connector 161 and the connector 131, the connector 131 is connected to the connector 131 in a wave shape with respect to the direction in which the FPC harness portion 120 is inserted, and the surface of the connector 131 is also bent in a wave shape. It may be connected in the shape. Since the connector 161 and the connector 131 are thus connected in the FPC harness portion 120 of the present embodiment, the FPC harness portion 120 physically presses the hard disk device 160 by vibration or impact from the outside, Pulling action can be suppressed.

  The FPC harness part 120 may extend along the direction in which the FPC harness part 120 is inserted into the connector 131, or extend in a direction different from the direction in which the FPC harness part 120 is inserted into the connector 131. May be. The FPC harness portion 120 can be extended depending on the positional relationship between the connector 161 and the connector 131.

  In addition, the damper 140 of the present embodiment is a member that physically connects the chassis 110 and the hard disk device 160. In the HDD unit 100 of the present embodiment, the damper 140 is formed on the side surface of the hard disk device 160.

  FIG. 3 is a plan view of the HDD unit 100 according to the present embodiment as viewed from above, in which a part of the chassis 110 shown in FIG. 1A is seen through. As shown in FIG. 3, the damper 140 according to the present embodiment has two sides on the side surface of the hard disk device 160 that is perpendicular to the disk surface of the hard disk device 160 and does not face the connector 131 and the front grill 150. A total of four are provided. That is, a total of four dampers 140 are provided, two on each of a pair of opposite side surfaces of the hard disk device 160.

  These dampers 140 may be provided at any position on the above-described side surface of the hard disk device 160, but may be fixed to, for example, a mounting screw portion (not shown) that the hard disk device 160 includes for fixing. Further, these four dampers 140 may be provided at symmetrical positions on the side surface of the hard disk device 160. That is, the two dampers 140 provided on one side surface and the two dampers 140 provided on the other side surface may be provided symmetrically with respect to the center of the hard disk device 160. By installing the hard disk device 160 in the chassis 110 in this way, it can be stably installed.

  The damper 140 can be fixed to the hard disk device 160 by a known method such as screwing.

  The damper 140 of the present embodiment is a member that absorbs and relieves vibrations applied to the chassis 110 from the outside, and is formed of an elastic member. The HDD unit 100 according to the present embodiment is preferably a member that vibrates as vibration with a large amplitude from vibration applied from the outside due to an impact or the like. When an impact of the same energy is received from the outside, a member that vibrates as a swing with a large amplitude, such as the damper 140 of the present embodiment, tends to have a longer vibration cycle (lower natural frequency). As such a member, for example, an elastic member having a high effect of reducing vibration such as impact is suitable. For example, such a member may be formed of an elastic member such as silicon rubber, or may be formed of an elastic member supported by a fluid such as oil. As such a damper, for example, a damper supplied by Pioneer material Precision Tech as a product expressed as IIR 10 ° as hardness and material can be used.

  Here, the positions where the shock absorbing portion 111 and the shock absorbing frame 112 are provided will be described in detail. As described above, the hard disk device 160 is held by the damper 140 provided on the side surface of the hard disk device 160 perpendicular to the disk surface of the hard disk device 160. Therefore, the hard disk device 160 and the chassis 110 may come into contact with each other on the side surface where the damper 140 is not provided on the side surface of the hard disk device 160.

  Therefore, the shock absorbing portion 111 and the shock absorbing frame 112 provided with the shock absorbing portion 111 protect the side surface of the hard disk device 160 on the side where the connector connecting portion 130 is provided and the side where the front grill 150 is provided. It is preferable to be provided.

  In the present embodiment, as shown in FIGS. 1C and 3, the shock absorbing frame 112 has a hard disk device 160 facing the side where the connector connecting portion 130 is provided and the side where the front grill 150 is provided. At a position 4 mm away from the side surface, a surface parallel to the side surface is vertically extended from the chassis bottom surface. Then, shock absorbing portions 111 are formed at four positions of the shock absorbing frame 112 at positions on the side surfaces of the hard disk device 160 and facing positions close to the corners.

  The shock absorbing portion 111 is formed of an elastic member such as silicon rubber, and a member having excellent shock absorption such as a member having a thickness of 7 mm and a thickness of 7 mm supplied by Geltech Co., Ltd. can be used.

  Moreover, it is preferable that the shock absorbing unit 111 is provided so as to be a distance at which the shock absorbing unit 111 and the hard disk device 160 gently come into contact when vibration is generated. For example, it is preferable that the shock absorbing unit 111 and the hard disk device 160 are arranged with an interval of 2 mm.

  An operation when vibration is applied to the HDD unit 100 formed as described above will be described.

  In the HDD unit 100 of the present embodiment, the vibration and shock applied to the chassis 110 from the outside are attenuated by the damper 140 that converts the vibration to a swing with a large amplitude, and the shock absorbing unit 111 extending from the chassis 110 is attenuated. The vibration applied to the chassis 110 from the outside is suppressed by the contact of the hard disk device 160.

  When vibration is applied to the chassis 110 from the outside, the damper 140 shakes the hard disk device 160 as vibration having a large amplitude and a long vibration cycle. For example, when an impact is applied in the same manner using the above IIR 10 ° damper and a harder IIR 30 ° damper, the IIR 10 ° damper vibrates at an amplitude of 4.36 mm and a vibration frequency of 17.1 Hz. The damper vibrated with an amplitude of 0.36 mm and a vibration frequency of 48.2 Hz. That is, it can be seen that the vibration applied to the chassis 110 from the outside is converted into a swing with a large amplitude in the IIR 10 ° damper having a small elasticity.

  When such a low-elasticity member is used as a damper, there is a problem that vibrations are not easily attenuated while the effect of reducing vibrations is enhanced.

  In the HDD unit 100 according to the present embodiment, the hard disk device 160 is provided in the chassis 110 in order to effectively attenuate energy due to an external impact converted into a large amplitude swing by the damper 140. 111, and the amplitude of the hard disk device 160 is suppressed.

  Table 1 shown below is an example of the case where the damper 140 used in the HDD unit 100 of the present embodiment uses an IIR 10 ° damper and an IIR 30 ° damper. FIG. 4 shows an example of the embodiment. It is a graph which shows a result. Further, in Table 1, in addition to the IIR 10 ° damper, the above-mentioned θ7 shock absorbing material cut to 2 mm square is provided on the chassis 110 as the shock absorbing portion 111 as shown in FIGS. The case is also described. At this time, the shock absorbing unit 111 and the hard disk device 160 are provided with an interval of 2 mm.

  In Table 1, since the distance between the shock absorbing unit 111 and the hard disk device 160 is set to 2 mm, the value of one amplitude is not measured when the shock absorbing unit 111 is provided.

  As described above, when the IIR 10 ° damper having low elasticity is used, the vibration is swung with a large amplitude and the energy of the amplitude is increased, so that the maximum acceleration generated in the hard disk device 160 is increased. Even if an IIR 30 ° damper having high elasticity is used, the maximization speed is increased at high frequencies. On the other hand, when an IIR 10 ° damper and a θ7 shock absorber were used, the maximum acceleration was shown to be small regardless of the vibration frequency.

  That is, if the vibration amplitude is reduced by using the soft damper 140 to reduce the vibration frequency by lowering the vibration frequency and swinging the hard disk device 160 with a large amplitude and gently touching the shock absorber 111, the vibration is effective. Can be controlled.

  In addition, this invention is not limited to each structure demonstrated above, A various change is possible in the range shown to the claim. Embodiments obtained by appropriately combining the technical means explained in the above invention are also included in the technical scope of the present invention.

  As described above, in the present invention, the hard disk device is fixed to the HDD unit chassis by the elastic soft damper formed on the side surface of the hard disk device, and the hard disk device is swung with a large amplitude and provided around the hard disk device. In this configuration, the hard disk device is gently brought into contact with the vibration damping member so as to control the swing of the hard disk device. Therefore, the vibration generated in the built-in hard disk device can be effectively damped by the synergistic effect of the damper and the damping member. Therefore, the present invention provides a known large-capacity recording / reproducing apparatus such as an external recording / reproducing apparatus for a portable computer such as an installation type or a notebook personal computer, a recording / reproducing apparatus for an in-vehicle road navigation system, or a large-capacity recording / reproducing apparatus thereof. In addition to being able to be used for the purpose of detachably carrying the device, it can be widely applied to the purpose of detachably carrying an electronic device that is vulnerable to vibration.

(A)-(d) is a figure which shows one Embodiment of the electronic device unit in this invention, (a) is the top view which looked at the electronic device unit in this invention from upper direction, (b) is a side view (C) is AA 'sectional drawing of (a), (d) is the top view seen from the front. It is a figure which shows one Embodiment of the electronic device unit in this invention, and is a perspective view of the electronic device unit of FIG. FIG. 2 is a plan perspective view of the electronic device unit of FIG. 1 as viewed from above, and is a plan perspective view described so as to partially see a chassis. It is a graph which shows the relationship between the vibration frequency at the time of giving a vibration to HDD unit, and maximum acceleration. It is a top view which shows the conventional HDD unit. It is a top view which shows the conventional HDD unit.

Explanation of symbols

100 HDD unit (electronic equipment)
110 Chassis (mounting chassis)
111 Shock absorber (vibration control means)
112 Shock absorption frame 120 FPC harness part 121 Slit 130 Connector connection part 131 Connector 140 Damper (vibration damping means)
150 Front grill 151 Ventilation slit 160 Hard disk device 161 Connector 200 Electronic device mounting device 230 Connector

Claims (1)

An electronic device mounting enclosure,
The electronic device includes a plurality of vibration damping means having elasticity on a pair of opposing side surfaces,
The mounting case of electronic equipment, wherein the mounting case includes vibration damping means on a surface facing the side surface of the electronic device where the vibration damping means is not provided.

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