JP2005243233A - Portable disk drive device and information recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an impact resistant performance and a vibration resistant performance in a portable disk drive device. <P>SOLUTION: This portable disk drive device 101 comprises: a disk drive main body 102 having a disk-like recording medium for recording the information on the disk-like recording medium or reproducing the information recorded on the disk-like recording medium; a case 111 including the disk drive main body 102; vibration absorption means 103a arranged between the disk drive main body 102 and the case 111 for absorbing the vibrations from the case 111 to the disk drive main body 102; and an impact absorption means 103b arranged between the disk drive main body 102 and the case 111 for absorbing the impacts from the case 111 to the disk drive main body 102. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portable disk drive device that makes a disk drive main body portable, and an information recording / reproducing apparatus that is used by mounting the portable disk drive device.

  In recent years, hard disks have increased in capacity and transfer rate, and in the field of handling video signals, where magnetic tape has been the mainstream, servers used for temporary storage and transmission, large-capacity data backup or long-term storage Applications such as archive systems and video editing equipment are rapidly expanding.

  In the future, the density of optical discs such as DVDs will further increase, and optical discs are being used for video recorders or video cameras.

  Among them, a hard disk drive (hereinafter referred to as “HDD”), which is often used by being fixed in a device, is used as a portable medium in the same way as magnetic tape. It is being used as a recording medium for cameras and portable personal computers.

  However, as for the weakness of impact resistance due to a very precise configuration, which has been one of the drawbacks of HDDs in the past, there is currently no product that has fundamentally solved.

  FIG. 16 shows a conventional example for improving the impact resistance performance of the HDD disclosed in Japanese Patent Laid-Open No. 5-314745.

  The HDD main body 1602 is separated from the inner surface of the outer box 1606 by a flexible cable 1611 for connecting the connector 1605 provided on the HDD main body 1602 to the connector 1607 of the outer box 1606 and a plurality of shock absorbing parts 1612 and 1613. Supported.

In the above configuration, an external impact is first absorbed by the elastic outer box 1606 and then absorbed by the impact absorbing portions 1612 and 1613 and the flexible cable 1611. As a result, the shock resistance performance of the HDD main body 102 when not operating and during operation is improved.
JP-A-5-314745

  However, when the impact resistance is designed with the highest priority in the conventional HDD pack 1601, the shock absorbing portion made of a relatively soft member is used to suppress the acceleration caused by the impact in the given buffer space. A technique is generally used in which the time width of the impact acceleration pulse is widened to lower the acceleration peak. In other words, the resonance frequency of the shock absorbing member in the HDD pack determined by the relationship between the HDD main body and the shock absorbing member is set to a relatively low frequency range. However, when the HDD main body is supported by the soft shock absorbing portion, the shock absorbing portion has a weak force for holding the HDD main body, and therefore, the HDD main body in the HDD pack tends to be unstable due to external vibration. When the vibration component in the disk surface direction of the HDD main body is large, a swinging motion in the disk surface of the HDD main body tends to occur. In this case, there is a problem that the transfer rate of the HDD main body is remarkably deteriorated and the recording re-performance is greatly deteriorated. In addition, when the resonance frequency of the shock absorbing member is a low frequency level of 60 Hz or less, the vibration frequency applied to the HDD pack in a use environment such as hand carry or in-vehicle is close to the resonance frequency in the HDD pack, so As a result, a more intense swing occurs, and the transfer rate of the HDD main body tends to deteriorate. As described above, the conventional HDD pack has a problem that it cannot have both impact resistance and vibration resistance.

  In addition, when the HDD main body is used in a video camera or the like, it is necessary to assume impact resistance with a drop height exceeding 1 m, and further improvement in impact resistance performance is required including optical disk drives.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems by ensuring impact resistance performance when a portable disk drive device such as an HDD pack is dropped and suppressing deterioration of the transfer rate of the disk drive body under vibration conditions. It is an object of the present invention to provide a portable disk drive device that can achieve both.

  To achieve the above object, a portable disk drive device according to the present invention has a disk-shaped recording medium and records information on the disk-shaped recording medium or information recorded on the disk-shaped recording medium. A disk drive main body, a case containing the disk drive main body, a vibration absorbing means disposed between the disk drive main body and the case and absorbing vibration from the case to the disk drive main body, Shock absorbing means disposed between the disk drive main body and the case and configured to absorb a shock from the case to the disk drive main body.

  With such a configuration, even when external vibration is applied, if the acceleration level is about several G, the vibration absorbing means with high hardness absorbs vibration from the case to the disk drive body, and unnecessary vibration of the disk drive body is prevented. This suppresses the deterioration of the transfer rate of the disk drive body. In addition, when a large impact is applied, such as when dropped, a portable disk drive can be realized in which high impact resistance is exhibited mainly by impact absorbing means having a low hardness and a high vibration absorbing effect.

  The disk drive main body has a rectangular parallelepiped shape formed from six surfaces, and the vibration absorbing means is disposed in the vicinity of at least one vertex or in the vicinity of at least one ridge line of the rectangular parallelepiped shape of the disk drive main body. The absorbing means may be arranged in the vicinity of at least one vertex or in the vicinity of at least one ridge line of the rectangular parallelepiped shape of the disk drive body.

  The vibration absorbing means may be arranged so as to sandwich the disk drive main body.

  The disk drive body is formed of six surfaces and has a rectangular parallelepiped shape having twelve sides, and the vibration absorbing means is at least a pair of surfaces opposed to the parallelepiped disk drive body in parallel, or The rectangular parallelepiped disk drive main body may be arranged in the vicinity of at least one pair of ridgelines facing in parallel.

  The vibration absorbing means may be arranged in the vicinity of four sides perpendicular to the widest surface of the six surfaces of the disk drive body.

  The vibration absorbing means and the shock absorbing means may include a buffer member.

  The elastic constant of the vibration absorbing means may be different from the elastic constant of the shock absorbing means.

  The natural frequency of the vibration absorbing means may be different from the natural frequency of the shock absorbing means.

  The vibration absorbing means may have a hardness greater than that of the shock absorbing means.

  In such a configuration, since the vibration absorbing means having high hardness absorbs vibrations to the disk drive body and suppresses the in-plane oscillation of the disk-shaped recording medium, the transfer rate of the disk drive body is more reliably ensured. It becomes possible to suppress degradation of the.

  The disk drive body has a rectangular parallelepiped shape formed from six surfaces, and the vibration absorbing means is disposed so as to contact at least one of the six surfaces forming the disk drive body, and The means may be arranged to contact at least one of the six surfaces forming the disk drive body.

  The vibration absorbing means may be made of a member different from the shock absorbing means.

  The vibration absorbing means may be made of the same member as the shock absorbing means, and the vibration absorbing means may be a compression of the vibration absorbing means.

  The portable disk drive device according to the present invention includes a disk-shaped recording medium, and records information on the disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. A main body, a case containing the disk drive main body and having a convex portion on the inner surface, and a portion between the disk drive main body and the case so as to be partially compressed by the convex portion of the case Absorption means.

  With such a configuration, the portion compressed by the convex portion of the absorbing means supports the end of the disk drive body with greater rigidity than the other parts, and absorbs vibration from the case to the disk drive body. Oscillation in the disk surface of the disk-shaped recording medium is suppressed, and deterioration of the transfer rate of the disk drive body can be suppressed. In addition, when a large impact is applied, such as when dropped, the other part of the absorbing means, that is, the part that is not compressed and has a high impact absorbing effect mainly acts to exhibit high impact resistance. A portable disk drive device can be realized.

  The absorbing means is provided with a concave portion that engages with the convex portion of the case, and the convex portion of the case and the concave portion of the absorbing means are engaged to compress the vicinity of the concave portion of the absorbing means. A recess of the absorbing means may be arranged.

  The disk drive main body is formed of six surfaces and has a rectangular parallelepiped shape having 12 sides, corresponding to the vicinity of four sides perpendicular to the widest surface of the six surfaces of the disk drive main body. The case may be provided with a plurality of protrusions, and the plurality of protrusions may compress the absorbing means between the plurality of protrusions and the disk drive body.

  The portable disk drive device according to the present invention includes a disk-shaped recording medium, and records information on the disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. A main body, a case containing the disk drive main body, and an absorbing means disposed between the disk drive main body and the case, wherein the disk drive main body is a single plane parallel to the disk-shaped recording medium. The plane is rectangular, the mechanical resonance frequency of the absorbing means and the disk drive body in the long side direction of the plane, and the absorbing means and the disk drive body in the short side direction of the plane The absolute value of the difference from the mechanical resonance frequency is 100 Hz or more.

  With this configuration, when vibration is applied to the portable disk drive device, due to the fact that the resonance frequency is close in the short-side direction and the long-side direction of the disk drive main body, the cross-talk of vibration near each resonance frequency causes a disk shape. It is possible to realize a portable disk drive device in which the transfer rate of the disk drive main body does not significantly deteriorate due to the oscillation of the recording medium in the disk surface.

  The portable disk drive device according to the present invention includes a disk-shaped recording medium, and records information on the disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. A main body and a case enclosing the disk drive main body, and a first grounding portion for grounding to the first horizontal surface when the case is disposed on a horizontal surface on the first surface of the outer surface of the case; A second grounding unit different from the first grounding unit is provided.

  With this configuration, when the portable disk drive device falls on a plane parallel to the horizontal plane, the difference between the first grounding portion and the second grounding portion causes a difference between the first surface of the case of the portable disk drive device. Reaction forces of different magnitudes act to add moments and rebound while rotating immediately after falling, so that part of the energy due to the drop impact is converted to kinetic energy of the portable disk drive device. Therefore, it is avoided that the energy of the drop impact concentrates on the internal disk drive main body and the absorbing means, and the peak of acceleration received by the disk drive main body is reduced.

  The first grounding portion and the second grounding portion may be provided so as to face a projected point of the center of gravity of the entire portable disk drive device with respect to the first surface of the case.

  The apparatus further comprises absorbing means disposed between the disk drive main body and the case, and the natural frequency of the first grounding part and the second grounding part is higher than the natural frequency of the absorbing means, respectively. May be.

  The natural frequency of one ground part of the first ground part and the second ground part may be higher than the natural frequency of the other ground part.

  The material of the first grounding portion may be different from the material of the second grounding portion.

  One of the first ground part and the second ground part may be made of a rigid material, and the other ground part may be made of an elastic material.

  One of the first grounding portion and the second grounding portion is made of a rigid material, and the other grounding portion is made of an elastic material and a rigid material provided on the first surface side. Good.

  One of the first grounding portion and the second grounding portion may be made of a highly repulsive elastic material, and the other grounding portion may be made of a low repulsive elastic material.

  The material of the first grounding part may be the same as the material of the second grounding part, and the grounding area of the first grounding part may be different from the grounding area of the second grounding part.

  The material of the first grounding part may be the same as the material of the second grounding part, and the height of the first grounding part may be different from the height of the second grounding part.

  The portable disk drive device according to the present invention includes a disk-shaped recording medium, and records information on the disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. A portable disk drive device comprising a main body and a case having a surface that includes the disk drive main body and has a convex portion on an outer surface thereof, wherein the convex portion is the entire portable disk drive device with respect to a horizontal plane. It is arranged only on one side of the surface with respect to the projected point of the center of gravity of the image or distributed in the vicinity of a straight line on the surface passing through the projected point of the center of gravity of the entire portable disk drive device with respect to the horizontal plane Arranged.

  With this configuration, when the surface of the case of the portable disk drive device falls in parallel on a horizontal plane, the portable disk drive device is portable when the convex portion is grounded from the positional relationship between the position of the center of gravity and the convex portion of the entire portable disk drive device. A moment is generated in the disk drive device, and the posture changes with rotation until one end of the case collides with a flat surface. As a result, at the time of a drop impact, there will always be two or more collisions accompanied by the rotational movement of the portable disk drive device, and the energy from the drop impact is partly converted to the rotational kinetic energy of the portable disk drive device. Dispersed by multiple impacts and added to the disk drive. Therefore, it is avoided that the energy of the drop impact concentrates on the internal disk drive and the buffering means, and the peak of acceleration applied to the disk drive is reduced.

  The convex portion may be formed substantially parallel to the ridge line of the surface and continuously or intermittently.

  A guide groove may be provided on the surface so as to be substantially parallel to the convex portion, and a plane in which a surface of the convex portion and a wall surface of the guide groove are continuous may be formed.

  The height of the convex portion is such that when the convex portion and the ridge line of the surface of the case are simultaneously grounded on the horizontal plane, the projection point of the center of gravity of the entire portable disk drive device with respect to the horizontal plane is the height of the convex portion. The height may be such that it does not lie between the ridge line with the surface of the case.

  A portable disk drive device according to the present invention has a disk-shaped recording medium, records information on the disk-shaped recording medium, or reproduces information recorded on the disk-shaped recording medium, A portable disk drive device including a case containing the disk drive main body, wherein the case has a surface, and the surface of the case is disposed on a horizontal plane, the portable disk drive with respect to the horizontal plane. The projection point of the center of gravity of the entire apparatus is located outside the surface of the case or near the ridge line of the surface of the case.

  The surface of the case may be a flat surface, and the case may have a shape in which at least one ridge line of a rectangular parallelepiped shape formed from six surfaces is cut out.

  The surface of the case may be a flat surface, and an angle formed by a surface of the case and an adjacent surface may be different from a right angle.

  With this configuration, when the surface of the portable disk drive device falls in parallel on a flat surface, it is possible when the inclined surface is grounded from the positional relationship between the center of gravity of the entire portable disk drive device and the ridge line of the inclined surface. The portable disk drive device receives a rotational moment and changes its posture with rotation until one end of the case collides with a plane. In addition, even when the inclined surface itself falls parallel to the plane, a rotational moment is generated due to the positional relationship between the center of gravity of the entire portable disk drive device and the inclined surface, and the portable disk drive has the same posture. Make a change. As a result, at the time of a drop impact, there is always at least two collisions accompanied by the rotational movement of the portable disk drive device, and part of the energy from the drop impact is converted into the rotational kinetic energy of the portable disk drive device. Dispersed by the impact of the time, it will be added to the disk drive body. Therefore, it is avoided that the energy of the drop impact concentrates on the internal disk drive main body and the absorbing means, and the peak of acceleration received by the disk drive main body is reduced.

  The surface of the case may be an R surface constituted by a combination of a plurality of curved surfaces.

  With this configuration, when the portable disk drive device falls in parallel on a flat surface, the portable disk drive can be used when a part of the R surface is grounded from the positional relationship between the center of gravity of the entire portable disk drive device and the R surface. The device receives a rotational moment and changes its posture with rotation until one end of the case collides with a plane. As a result, at the time of a drop impact, there will always be two or more collisions involving the rotational movement of the portable disk drive device, and part of the energy from the drop impact will be converted into the rotational kinetic energy of the portable disk drive device, Will be applied to the disk drive body. Therefore, it is avoided that the energy of the drop impact concentrates on the internal disk drive main body and the absorbing means, and the peak of acceleration received by the disk drive main body is reduced.

  The portable disk drive device according to the present invention includes a disk-shaped recording medium, and records information on the disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. A portable disk drive device comprising a main body and a case containing the disk drive main body, wherein the position of the spatial center of the case is greatly deviated from the position of the center of gravity of the entire portable disk drive device. ing.

  The apparatus further comprises absorbing means disposed between the disk drive main body and the case, and a portion of the absorbing means that is located near the position of the center of gravity is closer to the disk drive than the other part. You may absorb the impact to a main body more.

The vibration absorbing means and the shock absorbing means may include a buffer member.
The thickness of the part located in the vicinity of the position of the said gravity center among the said absorption means may be thicker than the thickness of another part.

  The disk drive main body may have a connector, and the connector may be arranged at a position that is largely deviated with respect to the center of gravity of the entire portable disk drive device.

  In order to deviate the position of the center of gravity with respect to the spatial center of the case, a weight disposed between the case and the disk drive main body may be further provided.

  The weight may be a container that encloses fluid, powder, or particles movably therein.

  With such a configuration, the probability that a specific part will collide with a horizontal plane when the portable disk drive device falls by largely deviating the position of the center of gravity of the entire portable disk drive device from the position of the spatial center of the case. To be higher. In order to raise the shock absorption capacity in the vicinity of the specific part, the thickness of the member of the impact part is made particularly thicker than the other part, and the thickness of the member of the absorbing means of the other part is made thin, so that all surfaces Compared to the case where the thickness is the same, the impact resistance performance of the portable disk drive device can be increased efficiently. In addition, in order to deviate the position of the center of gravity of the entire portable disk drive device from the spatial center of the case, the energy applied by the drop impact is built into the portable disk drive using a container filled with fluid as a weight. Is consumed as kinetic energy of the encapsulated fluid, and the energy of impact acting on the disk drive main body and the absorbing means can be reduced.

  The portable disk drive device according to the present invention includes a disk-shaped recording medium, and records information on the disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. A main body, a case containing the disk drive main body, and a protection member disposed on an outer surface of the case so as to cover a part of the case and protect the case.

  The protective member may be a non-reversible deformable member.

  The protective member may be a plastic deformation member.

  The protective member may be detachably provided on the case.

  The portable disk drive device according to the present invention includes a disk-shaped recording medium, and records information on the disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. A portable disk drive device comprising a main body, a case containing the disk drive main body, and a protective member disposed on an outer surface of the case and covering a part of the case, wherein the entire portable disk drive device The protective member is disposed in the vicinity of the center of gravity.

  With this configuration, when the portable disk drive device falls, the protective member first collides with the horizontal surface, and a part of the energy due to the drop impact is absorbed by the destruction or plastic deformation of the protective member, and the weakened energy passes through the case. Therefore, the shock resistance of the portable disk drive device can be improved. In addition, since the destroyed or deformed protection member can be easily removed and replaced with a new protection member, the outer shape can be quickly restored, and even when the portable disk drive device is loaded into another device and used, There will be no obstacle to the attachment to and removal from the equipment.

  In addition, a portable disk drive device according to the present invention has a disk-shaped recording medium, records information on the disk-shaped recording medium, or reproduces information recorded on the disk-shaped recording medium, and drives A disk drive main body provided with a connector, an external connector for receiving a signal from the outside, and a signal for converting a signal of the first system received by the external connector into a signal of a second system different from the first signal Conversion means; an accumulator for storing the first signal or the second signal; the first signal or the second signal stored in the disk drive body; and the disk drive body and the external connector; And signal control means for controlling the storage means.

  The signal control means may cause the disk drive body and the storage means to record a signal received by the external connector.

  The signal control means may cause the disk drive body and the storage means to record signals of different methods received by the external connector.

  The signal control means may convert the signal received by the external connector by the signal conversion means into a signal of a different system and perform recording on the disk drive main body and the storage means.

  The signal control means may convert the signals received by the external connector by the signal conversion means into signals of different systems, and record the signals of different systems in the disk drive main body and the storage means.

  The storage means may include a semiconductor memory.

  The case has an opening, and the storage means includes a semiconductor memory and a memory holding means for detachably holding the semiconductor memory, and the semiconductor memory can be exchanged from the opening of the case. Good.

  The storage means has an address storage area for storing address management information of the disk drive body, and the signal control means updates the address management information in conjunction with the recording operation of the disk drive body, and is necessary Accordingly, the address management information in the storage means may be read and sent to the disk drive body.

  The storage means stores, as image data management information, representative still image data for all of the still images or moving image data stored in the storage means when image information is recorded in the portable disk drive device. The signal control means may send the image data management information in accordance with a signal input from the external connector.

  The storage means may have a remaining amount storage area for storing the capacity of an unrecorded area of the disk drive main body as remaining amount management information.

  With this configuration, it is possible to selectively store or retrieve moving images or still images with different bit rates in the disk drive main body and storage means according to the application, and simultaneously record or record moving images of a plurality of bit rates. Easily realizes simultaneous recording of still images while recording images. In addition, the portable disk drive device can be provided in another device by having storage means that can store address management information, image data management information, remaining area management information in the recording area, etc. in the disk drive main body separately from the disk-shaped recording medium. When connecting and using, the information can be read out instantaneously without waiting for the disk drive body to start. Furthermore, when a problem occurs in the address management information on the disk-shaped recording medium and it becomes difficult to start the disk drive body, it is possible to recover by referring to the address management information on the storage means.

  The portable disk drive device according to the present invention includes a disk-shaped recording medium, and records information on the disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. A main body, a case containing the disk drive main body, and a plurality of external connectors exposed to the outside from the case and connected to the disk drive main body.

  The plurality of external connectors include a first external connector and a second external connector having a number of electrical contacts equal to or greater than that of the first external connector and having a shape different from that of the first external connector. But you can.

  The second external connector may be arranged so that the electrical contacts are arranged substantially in a straight line on the outer surface of the case, and a partition may be provided between the adjacent electrical contacts.

  The first external connector and the second external connector may be spaced apart near both ends of the case.

  The case may have a rectangular parallelepiped shape formed from six surfaces, and the second external connector may be disposed in the vicinity of a ridge line of a surface facing the surface on which the first external connector is disposed.

  An absorption means disposed between the disk drive body and the case; a signal conversion means for converting an output signal from the disk drive body into another signal of a different system; and the signal conversion means connected to the disk. Storage means capable of temporarily storing signals input / output to / from the drive body, a cable for connecting the signal conversion means and the drive body connector to transmit signals, the disk drive body and the first external connector And signal control means for controlling input / output of signals between the second external connectors and the storage means.

  With this configuration, both a general-purpose interface standard connector for connection to a PC, etc. and a dedicated connector with durability and wearability suitable for connection to a video recorder or video camera are equipped, and both connectors have the same signal. Can be deployed to devices for various purposes, and by allocating both connectors to both ends of the portable disk drive device, even when it is inserted and fixed in one device, Data from the disk drive itself can be read using the other connector, and data can be downloaded when the portable disk drive measure cannot be taken out due to a failure of the inserted device, or data that has already been recorded from the recording device Can be copied to another device.

  The disk drive main body may further include erroneous erasure prevention means for simultaneously switching permission / prohibition of writing to the disk drive main body for both the first external connector and the second external connector.

  The erroneous erasure prevention means includes a movable erroneous erasure switching lever provided on the case, and an erroneous erasure switching switch that electrically switches write permission / prohibition setting in conjunction with the erroneous erasure switching lever. The signal control means may recognize the setting of the erroneous erasure changeover switch and control writing to the disk drive body.

  With such a configuration, data in the disk drive main body is not accidentally erased regardless of which of the two external connectors is used to connect to another device.

  The erroneous erasure prevention means may have at least one mode of write permission / write prohibition (reading permission) / start-up prohibition for the disk drive main body.

  With such a configuration, not only prohibiting writing to a medium containing important recording data, but also selecting the startup prohibit mode causes damage to the disk drive body and the disk-shaped recording medium caused by operating the disk drive body. The risk of doing so can also be avoided.

  The portable disk drive device according to the present invention supplies power to the remaining amount display means for displaying the remaining amount management information of the disk drive body, the remaining amount display means, the storage means, and the signal control means. And a power button for instructing power supply from the built-in battery, and by turning on the power button, the signal control means stores the remaining amount management information stored in the storage means May be read out and displayed on the remaining amount display means.

  With this configuration, it is possible to check the recordable data capacity or the time that can be recorded by the video recorder without connecting the portable disk drive device to another device.

  The remaining amount display means may include a liquid crystal screen, and the remaining amount management information may be displayed on the liquid crystal screen by at least one of a number and a pictograph in units of bytes.

  The remaining amount display means may include a plurality of LEDs.

  Further, an information recording / reproducing apparatus using the portable disk drive device according to the present invention has a rectangular parallelepiped shape that records information on a disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. The portable disk comprising: a holder part that detachably supports a portable disk drive device having a disk drive body; a plurality of vibration isolating means that support the holder part; and a frame part that fixes the vibration isolating means. With respect to the respective resonance frequencies in the long side direction and short side direction of the disk drive main body and the thickness direction of the disk drive main body in the disk drive main body in a state before the drive device is mounted on the holder portion. In a state where the portable disk drive device is mounted on the holder portion by the vibration means Serial Any respective resonant frequencies of the long side direction and a short side direction and the thickness direction of the disk drive unit takes a low value or substantially 100 Hz.

  With this configuration, by making the resonance frequency of the plurality of vibration isolation means sufficiently lower than the resonance frequency of the absorption means of the portable disk drive device, the vibration damping effect in the high frequency range obtained by the plurality of vibration isolation means An information recording / reproducing apparatus using a portable disk drive device that can sufficiently suppress vibration amplification due to the high resonance magnification of the absorbing means can be realized.

  An information recording / reproducing apparatus using a portable disk drive device according to the present invention includes a disk drive main body for recording information on a disk-shaped recording medium or reproducing information recorded on the disk-shaped recording medium. A holder unit that detachably supports the portable disk drive device, a plurality of vibration isolation units that support the holder unit, a cable that transmits input / output signals of the portable disk drive device, and the vibration isolation unit; With respect to the center of gravity of the whole of the portable disk drive device and the holder part supported by the vibration isolating means in a plane substantially parallel to the frame-shaped part to be fixed and the disk-shaped recording medium built in the disk drive body, A center of gravity adjusting means for setting the total moment applied by the vibration isolating means and the elasticity of the cable to substantially zero. .

  The center-of-gravity adjusting means may be configured such that a movable weight for finely adjusting the position of the center of gravity of the holder unit and the entire portable disk drive device is provided on the holder unit.

  The center-of-gravity adjusting means may be configured with a screw hole for attaching the vibration isolating means to the frame portion as a long hole.

  With such a configuration, around the center of gravity of the portion supported by the anti-vibration means with respect to disturbance rocking motion in the disk-shaped recording medium surface in which a significant deterioration in recording and reproducing performance occurs in the disk drive body, in particular, the hard disk drive body. The moment acting due to the non-uniformity of the external force received from the acting vibration isolating means or the cable is eliminated by the adjustment at the time of assembly. Thereby, it is possible to suppress the occurrence of the swinging motion from the disturbance translational motion, and to reduce the frequency of occurrence of deterioration in recording / reproducing performance under the actual use conditions of the device.

  An information recording / reproducing apparatus equipped with a portable disk drive device according to the present invention includes a disk drive main body that records information on a disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. A holder unit that detachably supports a portable disk drive device having a plurality of vibration-proof means for supporting the holder unit, and a cable that transmits input / output signals of the portable disk drive device. And a frame portion for fixing the vibration isolating means, and the coil spring is supported by the vibration isolating means in a plane substantially parallel to a disk-shaped recording medium housed in the disk drive body. Mount so that the straight line passing through the center of gravity of the portable disk drive unit and the entire holder part and the axis of the coil spring substantially coincide. It is.

With this configuration, the load due to the coil spring acts only on the straight line toward the center of gravity of the portable disk drive device supported by the vibration isolating means and the entire holder part, and does not act in the direction of generating a moment around the center of gravity. Therefore, the moment around the center of gravity does not act in a normal support state, and the influence on the moment due to individual differences such as manufacturing variations of coil springs is extremely small. This also suppresses the occurrence of rocking motion from disturbance translational motion, and reduces the frequency of recording / playback performance degradation due to disturbance rocking motion in the disk-shaped recording medium surface under the actual usage conditions of the device. Can do .

  In addition, an information recording / reproducing apparatus equipped with a portable disk drive device according to the present invention has a disk-shaped recording medium, and performs writing or reading of information by a head unit operating on the disk-shaped recording medium. A disk drive main body; an image pickup means used for taking an image; a motion vector detection means for continuously processing an image input from the image pickup means and detecting a motion vector of an image caused by a camera movement; Based on the absolute value level of the motion vector obtained from the vector detection means and its duration, it is determined that there is a possibility that the device main body is in a falling state, and the recording / reproducing operation by the head is stopped and the disk is used if necessary. Retreat to the outside of the recording medium, determine that the absolute value of the motion vector has decreased, and move the head to the disk A head evacuation control means for returning to the recording medium and restarting the recording / reproducing operation; and an image input signal from the imaging means during the head evacuation by the head evacuation control means and an image output signal read from the disk drive body are temporarily And image storage means for storing the image.

  A switch for selectively turning on / off the function of the head evacuation control means by a user of the device may be provided.

  With this configuration, even when the disk drive is accidentally dropped during the recording / reproducing operation of the information recording / reproducing apparatus, the motion vector of the image input from the imaging means is detected, and information recording / reproducing is performed based on the information. Since the head is retracted from the disk-shaped recording medium by determining that the device is in the fall state, the head and the disk-shaped recording medium collide due to a drop impact, and the data on the disk-shaped recording medium or the head itself is damaged. Can be prevented. Also, if a large motion vector is detected under conditions that are not falling due to a user's operation such as sudden panning during a video camera recording operation, the input signal from the imaging means is temporarily It is possible to maintain the continuous recording operation by storing the image in the image storage means and controlling the recording signal in the image storage means to be transferred to the disk drive after the head returns from the retracted state. Furthermore, by enabling this function to be selectively turned ON / OFF, under shooting conditions where frequent high-speed pan operations occur, turning the function OFF eliminates unnecessary retraction of the head and makes it more stable. Recording is possible.

  As described above, according to the portable disk drive device of the present invention, the two types of absorbing parts having different hardnesses are arranged between the disk drive body and the case, or the absorbing part is partially compressed. As a result, when the vibration is about several G, a restricting force for the disk drive is secured, and the deterioration of the transfer rate is suppressed by suppressing the swing of the disk-shaped recording medium in the disk surface, and when the shock is about several hundred G A low-hardness absorbing member having a high impact absorbing effect mainly acts to ensure excellent impact resistance, and can have both vibration resistance performance and impact resistance performance.

  Also, devise the case shape etc. of the portable disk drive device to distribute or reduce the energy consumed at each collision by causing a bounce or a double drop after a collision with the horizontal plane, or from a specific aspect By configuring so as to fall and placing absorption means mainly on the surface side, the acceleration received by the disk drive main body at the time of collision can be reduced.

  Further, in the information recording / reproducing apparatus using the portable disk drive device, the three-way damper in the state where the portable disk drive device is mounted with respect to the maximum value of the resonance frequency in the direction of the disk drive 3 in the portable disk drive device. By setting the resonance frequency of the support system to be lower than about 100 Hz, vibration amplification due to the high resonance magnification of the absorbing member can be sufficiently suppressed by the vibration damping effect obtained by the damper supporting system, and the resonance of the absorbing member can be suppressed. And the resonance of the damper support system overlap to prevent the portable disk drive device supported by the damper from swinging in the disk surface. As a result, it is possible to avoid deterioration of the data transfer rate of the disk drive body, particularly the disk-shaped recording medium. The disk surface of the disk-shaped recording medium can be adjusted by assembling and adjusting a balancer (weight) whose position is variable so that the sum of the moments of the force acting on the damper support system with respect to the center of gravity of the damper support system is substantially zero. Oscillation can be suppressed, and stable recording / reproduction of the disk drive body can be realized.

  In addition, when a portable disk drive device is applied to an information recording / reproducing device such as a video camera, the possibility of falling is detected from the motion vector between frames of the captured image, and the head of the disk drive body is withdrawn from the disk. Since the disk drive is caused to collide with the horizontal plane, it is possible to reduce the risk that the disk drive is damaged and data already recorded cannot be read.

  Embodiments of the present invention will be described below with reference to the drawings. In the following description, a hard disk drive body is cited as a specific example of the disk drive body, but the disk drive body is not limited to the hard disk drive body. The disk drive main body has a disk-shaped recording medium and only needs to be able to record information on the disk-shaped recording medium or to reproduce information recorded on the disk-shaped recording medium. The disk drive main body includes a DVD drive main body. .

  The portable disk drive device according to the present invention functions as an HDD pack.

(Embodiment 1)
Embodiment 1 of the present invention will be described, in which the portable disk drive device includes a vibration absorbing portion and an impact absorbing portion.

  FIG. 1A shows a schematic perspective view of the portable disk drive device 101. In FIG. 1A, the portable disk drive device 101 is shown in a rectangular parallelepiped shape. In FIG. 1A, the X axis, the Y axis, and the Z axis are shown in parallel with the cuboid-shaped ridge line from the spatial center O of the portable disk drive device 101.

  FIG. 1B shows a cross-sectional view of the portable disk drive device 101 in the XY plane. FIG. 1C shows a cross-sectional view of the portable disk drive device 101 in the XZ plane. FIG. 1D shows a cross-sectional view of the portable disk drive device 101 in the YZ plane.

  A portable disk drive device 101 according to the present embodiment is arranged between an HDD main body 102, a case 111 containing the HDD main body 102, and between the HDD main body 102 and the case 111, and from the case 111 to the disk drive main body 102. A vibration absorbing portion 103a that absorbs the vibration of the disk drive, and a shock absorbing portion 103b that absorbs a shock from the case 111 to the disk drive main body 102.

  In the following description of the present specification, it is described that each of the vibration absorbing portion 103a and the shock absorbing portion 103b includes a buffer member (cushion material, elastic material), but the present invention is not limited to this. The vibration absorbing unit 103a or the shock absorbing unit 103b only needs to absorb vibration or shock, and may include, for example, a mechanical member such as an actuator.

  When each of the vibration absorbing unit 103a and the shock absorbing unit 103b includes a buffer member, generally, the hardness of the vibration absorbing unit 103a is larger than the hardness of the shock absorbing unit 103b. Further, it is desirable that the elastic constant of the vibration absorbing portion 103a is different from the elastic constant of the shock absorbing portion 103b. Alternatively, the natural frequency of the vibration absorbing unit 103a is preferably different from the natural frequency of the shock absorbing unit 103b.

  In the following description of the present embodiment, it is assumed that the vibration absorbing portion 103a is made of a member different from the shock absorbing portion 103b.

  1A to 1D, each of the portable disk drive device 101 and the HDD main body 102 is shown as a rectangular parallelepiped shape formed from six surfaces, but the portable disk drive device of the present invention is not limited to this. Please note that it is not.

  The vibration absorbers 103a arranged at the four vertices of the rectangular cross section of the HDD main body 102 shown in FIG. 1B have a long side direction (direction parallel to the X axis in FIG. 1A) and a short side direction (in FIG. 1A). The HDD main body 102 is arranged so as to define the position in three directions: a direction parallel to the Y axis) and a thickness direction (direction parallel to the Z axis in FIG. 1A). Further, the shock absorbing portion 103b covers the upper and lower surfaces of the HDD main body 102 (the X axis and the X axis in FIG. 1A) so as to cover the left and right side surfaces of the HDD main body 102 (the plane parallel to the plane including the X axis and the Z axis in FIG. 1A). Plane parallel to the plane including the Y axis), left and right side surfaces (plane parallel to the plane including the X axis and Z axis in FIG. 1A), front and rear side surfaces (plane parallel to the plane including the Y axis and Z axis in FIG. 1A) And the case 111.

  FIG. 2A is a perspective view showing the shapes of the vibration absorbing unit 103a and the shock absorbing unit 103b included in the portable disk drive device 101. FIG. The vibration absorbing portion 103a is disposed so as to correspond to the vicinity of the eight apexes of the HDD main body 102 and the case 111 having a rectangular parallelepiped shape, and the shock absorbing portion 103b is disposed in the other portions. In FIG. 2A, the vibration absorber 103a is disposed in the vicinity of four sides perpendicular to the widest surface of the six surfaces of the HDD main body 102.

  The vibration absorbing portion 103a and the shock absorbing portion 103b may be used by combining those formed separately, or the two may be integrally formed by two-color molding or the like. Further, in FIG. 2A, for the purpose of explaining the configuration of the vibration absorbing unit 103a and the shock absorbing unit 103b, a two-divided form is shown, but the present embodiment is not limited to this. Please note that. Here, the vibration absorbing portion 103a and the shock absorbing portion 103b are both made of a gel material having a high absorbing effect on force, but the vibration absorbing portion 103a is made of a gel material having a higher hardness than the shock absorbing portion 103b.

  As an example, it is desirable that the vibration absorbing portion 103a has a hardness of 90 degrees (Asker FP) and the shock absorbing portion 103b has a hardness of about 60 degrees (Asker FP). Further, the vibration absorbing portion 103a and the shock absorbing portion 103b may be made of a material such as urethane foam having the same hardness difference instead of the gel material.

  Hereinafter, the case where vibration and impact are applied to the portable disk drive device 101 will be described with reference to FIG.

  Since the conventional HDD main body is elastically supported by a relatively soft member of the shock absorbing portion, the HDD main body tends to cause a rocking motion within the disk surface of the HDD main body, which deteriorates the recording / replaying performance of the HDD main body. This causes a problem that the transfer rate of the HDD main body is remarkably deteriorated due to the vibration.

  On the other hand, in the portable disk drive device 101 according to the present invention, the HDD main body 102 is supported with relatively high rigidity by the vibration absorbing portion 103a having high hardness. Even if this vibration is applied, the vibration absorbing portion 103a supports the HDD main body 102 and is arranged so as to suppress the oscillation in the disk surface of the HDD main body 102, so that the data transfer rate of the HDD main body 102 is deteriorated. It can be suppressed.

  Generally, the frequency of vibration that the portable disk drive device 101 receives in a mobile use environment such as hand carry or in-vehicle is centered around a frequency range of about 60 Hz or less. When the resonance frequency in the portable disk drive device 101 is close to such a frequency range, a more severe oscillation occurs due to the resonance, and the transfer rate from the HDD main body 102 is likely to deteriorate. Therefore, it is desirable that the resonance frequency of the portable disk drive device 101 determined by the vibration absorbing unit 103a and the shock absorbing unit 103b and the HDD main body 102 is set to a high frequency range of about 60 Hz or more.

  Further, even when an impact of several hundred G is applied to the portable disk drive device 101, such as when the portable disk drive device 101 is dropped on the ground, the portable disk drive device 101 according to the present embodiment absorbs vibration. In addition to the portion 103a, the shock absorbing portion 103b having more excellent shock resistance performance absorbs energy with a sufficiently large receiving area, so the portable disk drive device 101 as a whole uses only the shock absorbing portion 103b as a member of the absorbing portion. Impact resistance performance equivalent to the time is ensured.

  As described above, in the portable disk drive device 101 of the present embodiment, the vibration absorbing unit 103a optimized for supporting the HDD main body 102 during vibration and the shock absorbing unit 103b optimized for absorbing drop impacts. Can be used at the same time to prevent the HDD main body 102 from being damaged by a drop impact and to suppress the deterioration of the data transfer rate of the HDD main body 102 under vibration conditions.

  In the portable disk drive device 101 described above, it is assumed that the vibration absorbing unit 103a is made of a member different from the shock absorbing unit 103b, and the portable disk drive device 101 includes two types of absorbing members. Has vibration resistance and impact resistance. The two types of absorbing members (the members of the vibration absorbing unit 103a and the shock absorbing unit 103b) of the portable disk drive device 101 shown in FIG. 2A correspond to the eight vertices of the HDD main body 102 and the case 111 having a rectangular parallelepiped shape. The vibration absorbing portion 103a is disposed on the other portion, and the shock absorbing portion 103b is disposed on the other portions. However, the vibration absorbing portion 103a and the shock absorbing portion 103b according to the present embodiment are not limited to this.

  For example, as shown in FIG. 2B, the vibration absorbing portion 203a may be disposed so as to be in contact with most of the left and right side surfaces of the HDD main body 102 and the case 111, and the shock absorbing portion 203b may be disposed so as to be in contact with other portions. Good. Alternatively, as shown in FIG. 2C, the vibration absorbing portion 253a may be disposed so as to be in contact with the vicinity of the center of the long side of the HDD main body 102 and the case 111, and the shock absorbing portion 253b may be disposed so as to be in contact with other portions. Good.

  As shown in FIGS. 2A to 2C, the vibration absorbing unit is disposed so as to sandwich a part of the HDD main body 102, and the shock absorbing unit is disposed so as to cover most of the remaining part of the HDD main body 102. The vibration absorbing unit supports the HDD main body 102 with relatively high rigidity, suppresses the occurrence of swinging motion in the disk surface of the HDD main body 102 that degrades the performance of the HDD main body 102 under vibration conditions, and at the time of a drop impact. The impact absorbing portion 103b mainly acts to ensure impact resistance performance.

  However, the present embodiment is limited to that the vibration absorbing unit is disposed so as to sandwich a part of the HDD main body 102 and the shock absorbing unit is disposed so as to cover the remaining most part of the HDD main body 102. Instead, each of the vibration absorbing portion and the shock absorbing portion may be arranged so as to be in contact with a part of the disk drive main body 102. Alternatively, when the disk drive main body 102 has a rectangular parallelepiped shape having six surfaces, each of the vibration absorbing portion and the shock absorbing portion may be disposed so as to be in contact with at least one surface of the disk drive main body 102.

  Further, as shown in FIGS. 2A and 2B, each of the vibration absorbing portion and the shock absorbing portion is arranged in the vicinity of at least one vertex or in the vicinity of at least one ridge line of the HDD main body 102 having a rectangular parallelepiped shape. The efficiency of vibration absorption of the vibration absorbing portion and shock absorption of the shock absorbing portion is improved.

  Further, as shown in FIG. 2B, each of the vibration absorbing portion and the shock absorbing portion is disposed on at least one pair of parallel opposing surfaces of the HDD main body 102 having a rectangular parallelepiped shape, so that the vibration absorbing portion of the vibration absorbing portion is arranged. In addition, the impact absorbing efficiency of the impact absorbing portion is improved. Alternatively, each of the vibration absorbing unit and the shock absorbing unit is arranged in the vicinity of at least one pair of ridge lines facing each other in parallel in the rectangular parallelepiped HDD main body 102, so that the vibration absorbing unit and the shock absorbing unit of the vibration absorbing unit are similarly provided. The efficiency of shock absorption is improved.

  In Embodiment 1 demonstrated above, the case where the member of a vibrational absorption part differs from the member of an impact absorption part has been assumed. However, the present invention is not limited to the case where the vibration absorbing member is different from the shock absorbing member. An embodiment in which the member of the vibration absorbing portion is the same as the member of the shock absorbing portion will be described below as a modification of the first embodiment.

  FIG. 3A is a schematic perspective view of a portable disk drive device 301 according to a modification of the first embodiment. In FIG. 3A, the portable disk drive device 301 is shown in a rectangular parallelepiped shape. In FIG. 3A, the X axis, the Y axis, and the Z axis are shown in parallel with the rectangular parallelepiped ridge line from the spatial center O of the portable disk drive device 301.

  FIG. 3B shows a cross-sectional view of the portable disk drive device 301 on the XY plane. FIG. 3C shows a cross-sectional view of the XZ plane of the portable disk drive device 301. FIG. 3D shows a cross-sectional view of the portable disk drive device 301 in the YZ plane. FIG. 3E is a cross-sectional view of a plane parallel to the XZ plane of the portable disk drive device of FIG. 3A for explaining the arrangement of the protrusions. FIG. 3F is a sectional view of a plane parallel to the YZ plane of the portable disk drive device of FIG. 3A for explaining the arrangement of the protrusions.

  The portable disk drive device 301 shown in FIGS. 3A to 3D is similar to the portable disk drive device 101 shown in FIGS. 1A to 1D except that a protrusion 317 is provided on the inner surface of the case 311. It has the same configuration.

  In the portable disk drive device 301 according to the modification of the first embodiment, the vibration absorbing portion 303a is made of the same member as the shock absorbing portion 303b. As shown in FIGS. 3B, 3E, and 3F, the case 311 is provided with protrusions (convex portions) 317 on the inner surface in the vicinity of the four apexes of the HDD main body 302 having a rectangular cross section. The case is provided with a plurality of convex portions 317 corresponding to the vicinity of the four sides perpendicular to the widest surface of the six surfaces of the HDD main body 102, and the plurality of convex portions 317 are the plurality of convex portions 317. And the shock absorber 303a between the HDD main body 302 and the HDD main body 302.

  Therefore, when the vibration absorbing portion 303a is disposed so as to contact the protruding portion 317 of the case 311, the vibration absorbing portion 303a made of the same member as the shock absorbing portion 303b is compressed by the protruding portion 317 in the portable disk drive device 301. Thus, the vibration absorbing unit 303 a has an effect of pressing and holding the HDD main body 302 by the compressed reaction force, and an effect of absorbing and suppressing vibration applied to the HDD main body 302. Therefore, the vibration absorbing unit 303a can obtain the same effect as that of the above-described first embodiment by ensuring the restriction force on the HDD main body 302 when the portable disk drive device 301 vibrates.

  FIG. 4A shows an enlarged view of the vicinity of the protrusion 317 in FIG. 3B. As shown in FIG. 4A, the vibration absorbing portion 303 a corresponding to the vicinity of the apex of the case 311 is provided with a recess 370. By engaging the recess 370 with the protrusion 317 of the case 311, the portion corresponding to the dimension A near the apex of the vibration absorbing portion 303 a is compressed to the dimension B of the case 311. Thus, by compressing the member of the vibration absorbing portion 303a, the vibration absorbing portion 303a made of the same member as the shock absorbing portion 303b can be caused to function as an absorbing member having a high hardness.

  In FIG. 4A, the projection 317 of the case 311 and the recess provided in the vibration absorbing portion 303a are engaged to change the function of the member of the vibration absorbing portion 303a. However, the present invention is not limited to this. is not. The vibration absorber 303a may not be provided with a recess in advance.

  FIG. 4B shows an enlarged view of the vicinity of the protrusion, which is an alternative example of FIG. 4A. In FIG. 4B, by pressing / compressing the end surface of the vibration absorbing portion 303a by the circular protrusion 317a of the case 311a, the function of the member of the vibration absorbing portion 303a is changed, and the vibration absorbing portion 303a is artificially hardened. You may make it function as a member of a high absorption part. As described above, the vibration absorbing portion 303a is not necessarily provided with a recess. Further, the shape of the protrusion is not limited to the circular shape as shown in FIG. 4B, but may be a rectangular shape.

  As described above, according to the modification of the first embodiment, the vibration absorbing unit 303 a and the shock absorbing unit 303 b are manufactured from the same member, and the vibration absorbing unit 303 a is disposed between the case 311 and the HDD main body 302. When placed, the function can be changed by pressing or compressing so that the vibration absorbing portion 303a absorbs vibration. Also. By providing a protrusion on the inner surface of the case corresponding to a portion that requires the vibration absorbing portion 303a having high hardness, the function of the member of the vibration absorbing portion 303a can be changed.

  Alternatively, in both the case and the HDD main body, the protrusions are not provided, and the thickness of the portion that requires high hardness of the absorption portion is made thicker than the other portions, so that the absorption portion is placed between the case and the HDD main body. , The thicker part of the part thicker than the other part of the absorbing part is compressed more than the other part, and can function as a vibration-absorbing part having high hardness in a pseudo manner.

  Alternatively, in order to improve the vibration resistance performance, in addition to ensuring the regulation force on the HDD main body, the resonance frequencies in the long side direction and the short side direction of the rectangular surface of the HDD main body parallel to the disk-shaped recording medium are set. You may arrange | position an absorption part so that it may leave | separate about 100 Hz or more.

  FIG. 5A is a graph showing that the resonance frequency in the short side direction of the rectangular surface of the HDD main body is 289.2 Hz, and FIG. 5B shows the resonance frequency in the long side direction of the rectangular surface of the HDD main body. It is a graph which shows that it is 162.1Hz. From the graphs of FIGS. 5A and 5B, it can be seen that the resonance frequencies in the long side direction and the short side direction of the rectangular surface of the HDD main body are separated by about 100 Hz or more. In this case, the occurrence of oscillation in the HDD disk surface due to an increase in the leakage component of the vibration outside the excitation direction in the vibration near the resonance frequency in the long side direction and the short side direction is suppressed. As a result, the transfer rate deterioration of the HDD main body can be further suppressed. The above has been confirmed experimentally.

  FIG. 6 shows a portable disk drive device having the properties of FIGS. 5A and 5B, that is, a portable disk drive device having properties of resonance frequencies of 162.1 Hz and 289.2 Hz in the long side direction and the short side direction, respectively. The performance improvement effect compared with the portable disk drive device whose resonance frequencies in the long side direction and the short side direction are 114 Hz and 146 Hz, respectively, and the threshold value in the transfer rate of the HDD main body is set to set the OK / NG of the recording performance. The evaluation results are shown. As shown in the graph of FIG. 6, particularly remarkable performance improvement was observed in the vicinity of 30 to 40 Hz where the performance degradation due to the oscillation of the HDD used in this experiment was greatly observed.

  Such a configuration is easily realized, for example, by changing the thickness or area of the absorption part arranged in the long side direction of the HDD main body to the thickness or area of the absorption part arranged in the short side direction of the HDD main body. it can. For example, a thicker absorption portion than the short side direction may be disposed in the long side direction of the HDD main body with respect to the gap between the case having the same circumference and the side surface of the HDD main body.

(Embodiment 2)
In the following embodiments, a configuration of a portable disk drive device for suppressing a drop impact when a portable disk drive device including a disk drive body is dropped will be described.

  FIG. 7A shows a surface 711a of a portable disk drive device 701 according to the present embodiment. FIG. 7B shows the surface 711b of the portable disk drive device 701 according to this embodiment. FIG. 7C shows a surface 711c of the portable disk drive device 701 according to the present embodiment. FIG. 7D shows a surface 711d of the portable disk drive device 701 according to the present embodiment. FIG. 7E shows a surface 711e of the portable disk drive device 701 according to the present embodiment. FIG. 7F shows a surface 711f of the portable disk drive device 701 according to the present embodiment.

  The portable disk drive device 701 includes a disk drive main body (not shown in FIGS. 7A to 7F) and a case 711 containing the disk drive main body. In the present embodiment, the case 711 contains the disk drive body in an arbitrary form. For example, the case 711 may include the disk drive main body as described in the first embodiment.

  The shape of the case 711 according to the present embodiment will be described with reference to FIGS. 7A to 7F.

  Although the case 711 illustrated in FIGS. 7A to 7F has a rectangular parallelepiped shape, it should be noted that the case 711 is not limited to the rectangular parallelepiped shape in the present invention.

  In this specification, for convenience, the outer surface 711a of the case 711 is referred to as an upper surface, the outer surface 711b of the case 711 is referred to as a lower surface, the outer surface 711c of the case 711 is referred to as a first side surface, and the outer surface 711d of the case 711 is referred to. Called the second side, the outer surface 711e of the case 711 is called the third side, and the outer surface 711f of the case 711 is called the fourth side. The upper surface 711a is opposed to the lower surface 711b, the first side surface 711c is opposed to the second side surface 711d, and the third side surface 711e is opposed to the fourth side surface 711f.

  Hereinafter, the case where the portable disk drive device 701 receives a drop impact will be described from the viewpoint of the case shape. First, the relationship between the fall state of the portable disk drive device 701 and the acceleration received by the internal HDD main body will be described.

  When the portable disk drive device 701 falls and collides with a horizontal surface (for example, the floor surface or the ground), the potential energy at the fall height becomes kinetic energy and collides. Normally, the portable disk drive device 701 falls twice from the apex or ridge line portion of the external surface (that is, the case 711) of the portable disk drive device 701, or once collides with a horizontal plane. There is a high probability of bouncing and repeating the collision twice or three times.

  When the portable disk drive device 701 falls or bounces twice as described above, the kinetic energy of the portable disk drive device 701 is dispersed in a plurality of collisions, or again by the bounce, the portable disk By being converted into kinetic energy of the drive device 701, it is consumed in stages. Therefore, in this case, the energy applied to the internal HDD main body and its absorption part is reduced by the individual collision among the plurality of collisions, and the HDD main body does not receive a large acceleration.

  However, for example, the lower surface 711b of the portable disk drive device 701 lands on the horizontal surface in a state substantially parallel to the horizontal plane, and the center of gravity of the entire portable disk drive device 701 is positioned at the approximate center of the lower surface 711b that contacts the horizontal plane. In this case, the portable disk drive device 701 is completely stationary on the ground surface, and almost all of the kinetic energy may be absorbed as vibration energy of the internal HDD main body and the vibration absorption unit. In this case, the acceleration received by the HDD main body is maximized, and the probability that the HDD main body is destroyed becomes extremely high.

  Therefore, from the viewpoint of protecting the HDD main body contained in the case 711 of the portable disk drive device 701 from a drop impact, the portable disk drive device 701 has a stable posture that may be stopped immediately after the drop collision, that is, the case 711. It is effective to take a case shape in which the portable disk drive device 701 is dropped twice or bounces after a drop collision when it collides with a horizontal surface in a state where any one of these surfaces is horizontal.

  Next, the behavior of the portable disk drive device 701 after dropping will be described for each case where the portable disk drive device 701 falls in a state where each surface is substantially parallel to a horizontal plane.

  The second embodiment will be described focusing on the case where the portable disk drive device 701 falls and the upper surface 711a or the lower surface 711b of the case 711 collides with the horizontal plane in a substantially horizontal state.

  On the upper surface 711 a and the lower surface 711 b of the case 711, grounding portions (projections) 713 are provided in the vicinity of the four apexes. The grounding unit 713 includes a first grounding unit 713a and a second grounding unit 713b.

  When the upper surface 711a or the lower surface 711b of the case 711 is disposed on a horizontal plane, the portable disk drive device 701 is grounded on the horizontal plane at four points, ie, two first grounding portions 713a and two second grounding portions 713b. The first ground portion 713a is integrally formed of the same material as the case 711 on the first external connector 763a (see FIG. 7E) side. The second grounding part 713b is formed on the second external connector 763b (see FIGS. 7B and 7F) side by a material having a larger elastic constant than the first grounding part 713a, for example, hard rubber. Alternatively, the natural frequency of the first grounding portion 713a is different from the natural frequency of the second grounding portion 713b.

  The first grounding portion 713a and the second grounding portion 713b are provided so as to face the projection point of the center of gravity of the entire portable disk drive device 701 with respect to the upper surface 711a or the lower surface 711b of the case 711.

  When the portable disk drive device 701 falls and the upper surface 711a or the lower surface 711b of the case 711 collides with the horizontal plane in a substantially horizontal state, the four points of the grounding unit 713 are grounded. After the collision, the grounding portion 713 receives a reaction force from the horizontal plane, but the first grounding portion 713a and the second grounding portion 713b formed of different materials have a magnitude of reaction force and reaction force received by each grounding portion. The time to reach the peak is different.

  When the first grounding portion 713a is made of a rigid material (for example, metal) and the second grounding portion 713b is made of an elastic material, the natural frequency of the first grounding portion 713a is the natural frequency of the second grounding portion 713b. The peak of the high reaction force is reached in a shorter time than the frequency. Therefore, a moment is applied to the portable disk drive device 701 so that the end provided with the first grounding portion 713a first jumps up with the side where the second grounding portion 713b is provided as a fulcrum.

  Here, when the portable disk drive device 701 includes the vibration absorbing portion 103a and the shock absorbing portion 103b as described in Embodiment 1, the vibration absorbing portion 103a and the shock absorbing portion 103b are included therein. Each has a natural frequency sufficiently lower than that of each of the first grounding portion 713a made of metal and the second grounding portion 713b made of an elastic material, and the peak of the reaction force when an impact is applied. It is desirable that the time until reaching the point is made of a material that is sufficiently longer than the elastic material of the case 711 (for example, metal) and the second grounding portion 713b.

  After the collision, the moment that acts to bounce and rotate the portable disk drive device 701 acts when the vibration absorbing portion 103a and the shock absorbing portion 103b are compressed by the portable disk drive device 701 and press the case 711. This occurs at a stage sufficiently earlier than the force at which the reaction force of the portable disk drive device 701 is pressed down to reach the peak. As a result, the portable disk drive device 701 bounces and rotates after the collision, and stops after repeating a plurality of collisions.

  Here, for the first grounding portion 713a and the second grounding portion 713b made of different materials provided on the upper surface 711a and the lower surface 711b of the case 711, a combination of a metal as a rigid material and an elastic material is given. It is also possible to use a hard resin as the rigid material. Alternatively, in the first grounding portion 713a and the second grounding portion 713b formed of different materials, in order to obtain an effect that the magnitude of the reaction force and the time to reach the peak of the reaction force are different from each other, It is also possible to use a combination of a highly elastic material and a low rebound elastic material.

  Further, the second grounding portion 713b may be configured by attaching a tip portion of a rigid material such as metal with an elastic material on the upper surface 711a or lower surface 711b side interposed therebetween instead of the elastic material. According to this, the elasticity of the second grounding portion 713b causes the portable disk drive device 701 to bounce after the falling collision to disperse the energy applied to the HDD main body, thereby reducing the acceleration received by the HDD main body, and the second Since the tip of the grounding portion 713b is made of a rigid material, it is possible to prevent the insertion feeling from being deteriorated due to the frictional resistance of the elastic material when the portable disk drive device 701 is inserted into a holder of another device.

  The material of the first grounding portion 713a may be made of the same elastic material as that of the second grounding portion 713b, and the shape may be different. For example, the first grounding portion 713a and the second grounding portion 713b are formed in a columnar shape having the same height, and the grounding area is made three times larger than the first grounding portion 713a. As a result, the elastic coefficient of the second grounding portion 713b with respect to the first grounding portion 713a is approximately three times. Therefore, different reaction forces are generated in the first grounding portion 713a and the second grounding portion 713b during the drop impact of the portable disk drive device 701, so that a moment for rotating the portable disk drive device 701 is generated. The portable disk drive device 701 bounces, disperses the energy received by the HDD main body, and can reduce the acceleration applied to the HDD main body. Alternatively, even if the first grounding portion 713a and the second grounding portion 713b made of the same material have different heights, the dropped portable disk drive device 701 falls or bounces twice.

  7A to 7F show the portable disk drive device 701 having two first grounding portions 713a and two second grounding portions 713b on the upper surface 711a or the lower surface 711b. It is not limited to this. As shown in FIGS. 8A to 8F, the number of the first grounding portion 813a and the second grounding portion 813b provided on the upper surface 811a or the lower surface 811b may be one. The first grounding portion 813a and the second grounding portion 813b are provided so as to face the projection point on the upper surface 811a or the lower surface 811b of the center of gravity of the entire portable disk drive device 801.

  The portable disk drive device 801 shown in FIGS. 8A to 8F is similar to FIGS. 7A to 7F except that the first grounding portion 813a and the second grounding portion 813b provided on the upper surface 811a or the lower surface 811b are different. It has the same configuration as the portable disk drive device 701 shown.

(Embodiment 3)
In the second embodiment, when the portable disk drive device 701 falls, the first grounding portion that contacts the horizontal surface of the surface of the case 711 of the portable disk drive device 701 is different from the second grounding portion. In the above description, the portable disk drive device 701 is dropped twice.

  In the third embodiment, a mode in which the portable disk drive device 701 is dropped twice from the relationship between the outer surface of the case 711 that contacts the horizontal plane and the center of gravity of the portable disk drive device 701 will be described.

  The third embodiment will be described with reference to FIGS. 7A to 7F.

  First, the shapes of the first side surface 711c and the second side surface 711d of the case 711 will be described. Since the first side surface 711c and the second side surface 711d of the case 711 are completely symmetric, only the shape of the first side surface 711c will be described.

  X shown in FIGS. 7A to 7F indicates the position of the center of gravity of the entire portable disk drive device 701 with respect to the indicated surface.

  The first side surface 711c, which is the outer surface of the case 711, is provided with convex portions (ribs) 714 parallel to the upper surface 711a and the lower surface 711b of the case 711 over almost the entire long side of the first side surface 711c. The convex portion 714 is located at a position close to the lower surface 711b side with respect to the position of the center of gravity X of the entire portable disk drive device 701 in the thickness direction, and the shape of the surface of the tip portion of the convex portion 714 is an R shape. Here, the height of the convex portion 714 is such that when the ridge line of the surface adjacent to the first side surface 711c and the convex portion 714 are simultaneously grounded on the horizontal plane, the projected point of the center of gravity of the entire portable disk drive device 701 is The height is set so as not to be located between the ridge line of the surface adjacent to the first side surface 711c and the convex portion 714.

  Thus, when the first side surface 711c or the second side surface 711d of the case 711 collides in a state parallel to the horizontal plane, the projected point of the center of gravity of the entire portable disk drive device 701 with respect to the horizontal plane is the first side surface 711c. Convex part 714 is arranged so that it may be located only on one side. Or the convex part 714 may be distributed and arrange | positioned in the vicinity of one straight line on the 1st side 711c passing through the projection point of the gravity center of the whole portable disk drive device 701 with respect to a horizontal surface.

  Further, as shown in FIGS. 7A to 7F, the convex portion 714 is formed substantially parallel to and continuously with the ridgeline of the first side surface 711c, but this embodiment is not limited thereto. It is not limited, The convex part 714 may be formed substantially parallel to the ridgeline of the 1st side surface 711c, and intermittently.

  In addition, a guide groove 715 is provided on the first side surface 711 c in parallel with the convex portion 714. The surface on one side of the convex portion 714 and the wall surface of the guide groove 715 form a continuous plane. The guide groove 715 penetrates to the end portion of the fourth side surface 711f, but terminates at the first side surface 711c without penetrating to the end portion of the third side surface 711e. The guide groove 715 can be used as a guide when the portable disk drive device 701 is inserted into another device. Near the center of the guide groove 715, two square holes of the guide groove 715 are formed as a grip 716a and a grip 716b, and are used for fixing in other devices of the portable disk drive device 701, a changer grip or a loader grip. be able to.

  A first external connector 763 a is provided on the third side surface 711 e of the case 711. The ridgeline between the third side surface 711e and the upper surface 711a is greatly cut out in a chamfered form, and the first external connector 763a and the HDD main body (not shown) are provided on the lower surface 711b side of the third side surface 711e. A power lamp 768 and an access lamp 769 are provided. The power lamp 768 and the access lamp 769 are provided in the vicinity of the ridgeline between the lower surface 711b and the third side surface 711e so that they can be confirmed from both the lower surface 711b and the third side surface 711e. Here, when the third side surface 711e is grounded in parallel with the horizontal plane, the projection point of the center of gravity X of the entire portable disk drive device 701 is arranged to be located outside the third side surface 711e. .

  A second external connector 763b of the case 711 is provided in the vicinity of the ridgeline between the fourth side surface 711f and the lower surface 711b. The fourth side surface 711f appears to be a curved surface when viewed from the upper surface 711a (see FIG. 7A) and when viewed from the first side surface 711c or the second side surface 711d (see FIG. 7C or FIG. 7D). It is configured. When viewed from the upper surface 711a, the fourth side surface 711f has a large arc shape with a convex center, and when viewed from the third side surface 711c, the fourth side surface 711f is closer to the upper surface 711a than the middle of the thickness of the fourth side surface 711f. It seems to be a substantially arc shape with an R center. Here, when the fourth side surface 711f is substantially horizontal and grounded on a horizontal plane, the projected point of the center of gravity X of the entire portable disk drive device 701 is off from the vicinity of the grounding point. Further, an erroneous erasure prevention lever 712 is provided on the fourth side surface 711f.

  When the portable disk drive device 701 collides with a horizontal plane with the first side surface 711c or the second side surface 711d of the case 711 being substantially horizontal, the convex portion 714 is grounded at the moment of the collision. Here, since there is a certain distance between the position of the convex portion 714 on the horizontal plane and the projection point on the horizontal plane of the center of gravity X of the entire portable disk drive device 701, the grounding portion of the convex portion 714 is moved after the collision. The moment acting as the support shaft acts on the portable disk drive device 701, and the portable disk drive device 701 rotates in a direction in which the upper surface 711a of the case 711 is in contact with the horizontal plane, so that a drop occurs twice. Even when the ridge line of the third side surface 711e and the convex portion 714 are simultaneously grounded on the horizontal plane, and a stable surface is formed by the apparent grounding point, the center of gravity X of the portable disk drive device 701 as a whole is Since the projection point is arranged so as not to be positioned between the ridge line of the third side surface 711e and the convex portion 714, the portable disk drive device 701 after the collision uses the ridge line of the third side surface 711e as a support shaft. The same moment is applied, and the fall occurs twice as well.

  When the portable disk drive device 701 falls and the third side surface 711e of the case 711 collides with the horizontal surface in a substantially horizontal state, the ridge line portion between the third side surface 711e and the upper surface 711a is greatly chamfered. Since it is notched, the ground contact area of the third side surface 711e to the horizontal plane is small, and the ground contact of the third side surface 711e is unstable.

  Here, since the projection point of the center of gravity X of the entire portable disk drive device 701 on the horizontal plane is located outside the third side surface 711e, the portable disk drive device 701 has the third side surface 711e and the upper surface after the collision. Moment about the ridge line with 711a acts as a support axis, and the fall occurs twice such that the upper surface 711a collides with the horizontal plane.

  When the portable disk drive device 701 falls and the fourth side surface 711f of the case 711 collides with the horizontal surface in a substantially horizontal state, the ground is grounded at one point on the R surface of the case 711 at the moment of the collision. Here, since the portable disk drive device 701 and the horizontal plane are in point contact, they are unstable, and the situation where the portable disk drive device 701 stops at the spot after the collision cannot occur.

  Furthermore, since the curved shape of the fourth side surface 711f is configured so that the projected point of the center of gravity X of the entire portable disk drive device 701 deviates from the vicinity of the grounding point, the portable disk drive device 701 includes a first curved surface. Moment about the ridgeline between the side surface 711f and the upper surface 711a acts as a support shaft, and the upper surface 711a falls twice such that it collides with the horizontal plane.

  As is clear from the above description, in the portable disk drive device 701 according to the second and third embodiments, the portable disk drive device 701 falls on the external surface of the case 711 of the portable disk drive device 701. It is possible to bounce or drop twice after colliding with the horizontal plane, disperse / reduce the energy consumed at each collision, and suppress the maximum acceleration value received by the internal HDD main body and absorption part Become.

  Alternatively, at least one of the six surfaces constituting the case 711, particularly the shape of the side surface, is formed by an inclined surface having an inclination angle different from a right angle with respect to the adjacent surface, and the inclined surface is parallel to the horizontal plane When grounded, a configuration in which the projection point of the center of gravity X of the entire portable disk drive device 701 is located outside the inclined surface or near the boundary between the inclined surface and the other surface is also possible. In the case of a collision from an inclined surface to a horizontal plane, the same effect can be obtained by causing a drop twice due to a moment acting after the collision.

(Embodiment 4)
In the second embodiment and the third embodiment, the configuration of the outer surface of the case for dropping the portable disk drive device 701 twice when the portable disk drive device 701 falls on the horizontal plane has been described.

  In the fourth embodiment, the configuration of the portable disk drive device will be described in which the position of the spatial center of the case is greatly deviated from the position of the center of gravity of the entire portable disk drive device. Since the portable disk drive device has such a configuration, only a specific part of the portable disk drive device can collide with the horizontal plane when it falls.

  Embodiment 4 of the present invention will be described below.

  FIG. 9A shows a schematic perspective view of the portable disk drive device 901. In FIG. 1A, the portable disk drive device 101 is shown in a rectangular parallelepiped shape. In FIG. 1A, the X axis, the Y axis, and the Z axis are shown in parallel with the cuboid-shaped ridge line from the spatial center O of the portable disk drive device 901.

  FIG. 9B shows a cross-sectional view of the portable disk drive device 901 on the XY plane. FIG. 9C shows a cross-sectional view of the XZ plane of the portable disk drive device 901. FIG. 9D shows a cross-sectional view of the portable disk drive device 901 on the YZ plane.

  The configuration of the portable disk drive device 901 will be described with reference to FIGS. 9A to 9D. However, the portable disk drive device 901 has the same configuration as the portable disk drive device 101 according to the first embodiment described with reference to FIGS. 1A to 1D except that the weight 918 and the protection member 933 are provided. Have

  The portable disk drive device 901 includes a weight 918 disposed between the case 911 and the HDD main body 902 in a space opposite to the space where the HDD connector 925 of the HDD main body 902 is located. By providing the weight 918, the position of the spatial center of the case 911 can be largely deviated from the position of the center of gravity of the entire portable disk drive device 901. The weight 918 is configured by sealing a liquid 919 in an internal cavity. The position of the center of gravity of the entire portable disk drive device 901 is greatly biased to the side surface 911f on the HDD connector 925 side. As a result, while the portable disk drive device 901 is dropped, the posture change occurs such that the side surface (911f) on the center of gravity side of the entire portable disk drive device 901 faces downward, and the center of gravity of the case 911 is deviated. The effect that the probability that the side surface 911f side and the horizontal plane collide will be increased.

  Here, the liquid 919 is desirably a material such as silicon oil having a low melting point and fluidity. Further, the substance sealed in the weight 918 used as a container is not limited to a liquid, but is a fluid, granule, or powder that can move in the internal space of the weight 918 by an impact applied from the outside of the case 911. It is also possible to use.

  Further, the shock absorbing portion 903b is thicker on the six sides of the HDD main body 902 on the side surface 911f side than the first embodiment, and the other five sides are thinner than the first embodiment. It may be provided in the form. As a result, as compared with the portable disk drive device 101 described in the first embodiment, when the portable disk drive device 901 falls from the side surface 911f to the horizontal plane, the absorption performance is improved, and the other five surfaces drop. In such a case, the absorption performance will be reduced.

  However, when the portable disk drive device 901 according to the present embodiment falls, the center of gravity of the portable disk drive device 901 is biased by the weight 918, so that there is a high possibility that the portable disk drive device 901 collides with the horizontal plane from the side surface 911f. It has become. Therefore, the impact resistance of the portable disk drive device 901 is substantially improved as compared with the portable disk drive device 101 described in the first embodiment, and the width and thickness of the portable disk drive device 901 are improved. As for the length of, the outer dimensions can be reduced by reducing the thickness of the shock absorbing portion 903b. Here, the height required for almost completing the posture change during the fall depends on conditions such as the weight of the portable disk drive device 901 or the gravity level of the center of gravity. The thickness of the absorbing member is set as a minimum thickness that satisfies the absorbing performance required at the height at which the posture change is completed.

  As described above, the portion (in this case, the shock absorbing portion 903b) of the absorbing portion located near the position of the center of gravity absorbs more shock from the case to the disk drive body than the other portions. Therefore, it is possible to absorb the impact on the portable disk drive device 901 efficiently.

  The behavior when a drop impact is applied to the portable disk drive device 901 having the above configuration will be described.

  When the portable disk drive device 901 falls in an arbitrary posture, the posture changes so that the side surface 911f side where the center of gravity X is located is lowered due to the gravity center deviation of the entire portable disk drive device 901 in the process of dropping.

  First, when the falling height of the portable disk drive device 901 is lower than the height at which the posture change is completed by dropping, the portable disk drive device 901 collides with the horizontal surface on any of the six surfaces of the case 911. Since the vibration absorbing portion 903a and the shock absorbing portion 903b included in the drive device 901 have sufficient shock absorbing performance against a drop impact from this height on any surface, the HDD main body 902 is damaged. I will not receive it.

  As is clear from the above description, in the portable disk drive device 901 according to the present embodiment, the position of the center of gravity X of the entire portable disk drive device 901 is greatly deviated from a specific surface, and from that surface when dropped. The impact resistance performance of the portable disk drive device 901 is improved by increasing the probability of colliding with the horizontal plane and by intensively raising the impact absorption performance on the surface side. Furthermore, although details will be described in the fifth embodiment below, the portable disk drive device 901 is provided with a replaceable protector 933 on a part of the case 911 and destroys the protector 933 when a large impact is applied. As a result, a part of the energy applied to the portable disk drive device 901 by the drop impact can be consumed, and the impact force applied to the internal HDD main body 902 can be reduced.

(Embodiment 5)
In the present embodiment, for example, a description will be given of a portable disk drive device including a protector 1033 that reduces a drop impact to the portable disk drive device when the portable disk drive device falls on a horizontal plane.

  FIG. 10A shows a surface 1011a of the portable disk drive device 1001 according to this embodiment. FIG. 10B shows a surface 1011b of the portable disk drive device 1001 according to this embodiment. FIG. 10C shows a surface 1011c of the portable disk drive device 1001 according to this embodiment. FIG. 10D shows a surface 1011d of the portable disk drive device 1001 according to this embodiment. FIG. 10E shows a surface 1011e of the portable disk drive device 1001 according to this embodiment. FIG. 10F shows a surface 1011f of the portable disk drive device 1001 according to this embodiment.

  The portable disk drive device 1001 shown in FIGS. 10A to 10F is arranged such that the protector 1033 covers the surface 1011f, and the surface 711c, the guide groove 715 on the surface 711d, the grip 716b, and the grounding portion 713b are omitted. Except for this point, it has the same configuration as the portable disk drive device 701 described in the third embodiment.

  Next, the configuration of the protector 1033 will be described. A protector 1033 that can be easily attached to and detached from the case 1011 is attached to the surface 1011f of the case 1011 having an uneven center of gravity. Here, the protector 1033 is disposed in the vicinity of the surface 1011 f so as to cover a part of the outer surface of the case 1011. The protector 1033 may be formed of a thin hard resin. The protector 1033 may be made of an irreversible deformation member or a plastic deformation member. The protector 1033 has a function of absorbing energy applied to the portable disk drive device 1001 by breaking itself when a large impact is applied.

  The portable disk drive device 1001 according to the present invention can be removed and easily replaced with a new protector 1033 even when the protector 1033 is destroyed by dropping, so that the outer shape can be quickly restored. Even when the device 1001 is loaded into another device and used, there is no problem in detaching from the other device.

  Here, it is assumed that the portable disk drive device 1001 includes a weight 918 (see FIG. 9B) having the liquid 919 described in Embodiment 4 inside.

  As understood with reference to FIGS. 9A to 9C and FIGS. 10A to 10F, it is desirable to provide a protector 1033 on the side where the weight 918 is provided.

  When the height at which the portable disk drive device 1001 begins to fall is higher than the height at which the posture change is completed, the portable disk drive device 1001 collides with the horizontal plane from the protector 1033 with the side surface 1011f facing downward. At this time, the impact input from the protector 1033 is transmitted to the case 1011 almost as it is. A part of the energy of the collision transmitted to the case 1011 is also transmitted to the weight 918, but the weight 918 is enclosed with a space in which the liquid 919 can move, and a part of the input energy is the liquid 919. It is consumed as kinetic energy, and the rest is transmitted to the vibration absorber 1003a, the shock absorber 1003b, and the HDD main body 102.

  Here, the shock absorbing portion 1003b on the side surface 1011f side is set to be thicker than other surfaces to improve the absorption performance, and has sufficient absorption performance in combination with the energy attenuation effect by the liquid 919 inside the weight 918. The HDD main body is not damaged.

  When the portable disk drive device 1001 falls from a higher position and receives a large impact, the protector 1033 is destroyed by the collision with the horizontal plane, thereby consuming a part of the energy at the time of the collision. After that, the energy transmitted to the case 1011 is further consumed as the kinetic energy of the liquid 919 inside the weight 918, and the remaining energy is transmitted to the HDD main body via the vibration absorbing unit 1003a and the shock absorbing unit 1003b. . As a result, the impact force is reduced by the double attenuation effect of the protector 1033 destruction and the internal attenuation of the weight 918, and damage to the HDD main body can be avoided.

  Here, an example in which a resin material is used as the material of the protector 1033 has been described, but the protector 1033 is formed using a thin metal, and the protector 1033 may absorb energy by plastic deformation during a large drop impact. The same effect can be obtained.

  The weight 918 and the protector 1033 are preferably provided on the side opposite to the external connector 1063a. As a result, the probability of collision with the horizontal plane from the side of the external connector 1063a is reduced, thereby preventing the external connector 1063a from being deformed by a drop impact.

(Embodiment 6)
In the present embodiment, a circuit configuration of the portable disk drive device 101 shown in FIGS. 1A to 1D will be described.

  FIG. 11 is a schematic diagram of a circuit configuration of the portable disk drive device 101. A substrate 106 (see FIGS. 1B to 1D) is fixed to the portable disk drive device 101. The substrate 106 is mounted with a signal conversion circuit 1160 that functions as signal conversion means, a control circuit 1161 that functions as signal control means, and a semiconductor memory 1162 as storage means. The board 106 and the HDD connector 1125 are connected by a flexible cable 105 (see FIG. 1C) in order to input and output signals and power to the HDD main body 102.

  The signal conversion circuit 1160 mutually converts an ATA signal, which is a general-purpose interface of the HDD main body 102, and a USB (Universal Serial Bus) signal generally used for connection to an external device of a personal computer. .

  The semiconductor memory 1162 functions as a buffer memory when signals are transmitted between the HDD main body 102 and the video recorder 1107, and also includes an address storage area 1162a for storing address management information on the HDD main body 102, and the HDD main body 102. An image data storage area 1162b for storing a representative image of image data such as a still image or moving image recorded therein as a still image, and a remaining amount storage area 1162c for storing the remaining capacity of the recording area of the HDD main body 102.

  The control circuit 1161 controls signal transmission among the HDD main body 102, the semiconductor memory 1162, and the video recorder 1107, and an HDD provided in the semiconductor memory 1162 in response to a request from an external device such as the HDD main body 102 or the video recorder 1107. Information management of the address storage area 1162a, the image data storage area 1162b, and the remaining amount storage area 1162c regarding the main body 102 is performed.

  Normally, an input signal from the video recorder 1107 is controlled so as to be recorded only in the HDD main body 102, but it can be simultaneously recorded in the semiconductor memory 1162 by a command from the video recorder 1107. At this time, a video signal such as MPEG2 having a relatively high transfer rate sent from the video recorder 1107 is recorded in the HDD main body 102, and at the same time, this signal is MPEG4 or MPEG1 having a low transfer rate or a predetermined time. It is desirable that the image is converted by the signal conversion circuit 1160 into a still image or the like at intervals and recorded in the semiconductor memory 1162.

  Further, input signals such as moving images and still images with various signal systems and transfer rates can be mixed and recorded in the HDD main body 102 without using the semiconductor memory 1162. At this time, according to the high-speed transfer rate of the HDD main body 102, (1) the same moving image having a plurality of transfer rates is recorded simultaneously, (2) different moving images are simultaneously recorded, and (3) still images are recorded while continuing the moving image recording. Functions such as recording at an arbitrary timing can be realized.

  On the surface of the case 111, a remaining amount display portion 1165 for displaying the remaining amount of recording capacity of the HDD main body 102 using a liquid crystal panel, and a display button 1166 for turning on / off the display of the remaining amount display portion 1165. Is provided. The case 111 also includes a battery 1167 that supplies power in conjunction with the display button 1166. The battery 1167 is a secondary battery, and is charged by a power supply to the portable disk drive device 101 when connected to an external device. Further, when a solar cell is provided on the case 111 and stored in a place exposed to light, charging may always be performed.

  When the display button 1166 is pressed and turned on by the circuit configuration of FIG. 11, power from the battery 1167 is supplied to the control circuit 1161, the semiconductor memory 1162, and the remaining amount display unit 1165, and the control circuit 1161 is connected to the semiconductor memory 1162. The remaining amount information of the recording area of the HDD main body 102 is read out from the remaining amount storage area 1162c and displayed on the remaining amount display portion 1165 as a number such as [15 GByte]. In order to minimize the consumption of the battery 1167, the power supply from the battery 1167 is stopped after displaying the remaining amount display portion 1165 for a certain time after the display button 1166 is pressed once. The remaining amount display unit 1165 may display a pictograph, and the remaining amount display unit 1165 may include a plurality of LEDs.

  Thus, unlike a conventional tape cassette, in a portable disk drive device in which the remaining capacity of the recording capacity could not be confirmed from the appearance, the remaining capacity can be confirmed without being connected to other devices when necessary.

  The outer shape of the case 111 of the portable disk drive device 101 may be the same shape as the portable disk drive device 701 described with reference to FIGS. 7A to 7F. A first external connector 1163 a based on the USB interface standard is attached to the control circuit 1161 on the substrate 106 in order to input and output signals with an external device. The end portion of the first external connector 1163a is exposed to the outside through the opening on the same side as the HDD connector 1125 on the side surface of the portable disk drive device 101.

  FIG. 7E shows a state in which the end portion of the first external connector 763a is exposed to the outside from the opening portion of the surface 711e on the same surface side as the HDD connector on the side surface of the portable disk drive device 701. Yes.

  Here, the remaining amount display portion 1165 is shown as the remaining amount display portion 765 in the portable disk drive device 701 shown in FIG. 7B and as the remaining amount display portion 1065 in the portable disk drive device 1001 shown in FIG. 10B. ing.

  The display button 1166 is shown as a display button 766 in the portable disk drive device 701 shown in FIG. 7B and as a display button 1066 in the portable disk drive device 1001 shown in FIG. 10B.

  The first external connector 1163a is shown as the first external connector 763a in the portable disk drive device 701 shown in FIG. 7E and as the first external connector 1063a in the portable disk drive device 1001 shown in FIG. 10E. ing.

  The second external connector 1163b is the second external connector 763b in the portable disk drive device 701 shown in FIGS. 7B and 7F, and the second external connector 1163b in the portable disk drive device 1001 shown in FIGS. 10B and 10F. Shown as external connector 1063b.

  Referring to FIG. 11 again, the signal conversion circuit 1160 is not limited to the above-described ATA / USB signal conversion, and may be configured to convert ATA into a signal such as USB2 or IEEE1394. Furthermore, it is conceivable to have a function of converting into a plurality of signals. In this case, the connector methods of the first external connector 1163a and the second external connector 1163b are USB2 (for personal computers) and IEEE1394 (AV For example, it is possible to expand the application of the portable disk drive device 101 by mounting a signal interface having a high device mounting rate in each product field.

  The control circuit 1161 may cause the HDD main body 102 and the semiconductor memory 1162 to record a signal received by the first external connector 1163a or the second external connector 763b, and the first external connector 1163a or the second external connector 763b The received signals of different methods may be recorded in the HDD main body 102 and the semiconductor memory 1162. Alternatively, the control circuit 1161 causes the signal conversion circuit 1166 to convert the signal received by the first external connector 1163a or the second external connector 763b into a signal of a different system, and records it in the HDD main body 102 and the semiconductor memory 1162. Alternatively, the signals received by one external connector 1163a or the second external connector 763b may be converted into signals of different systems, and signals of different systems may be recorded in the HDD main body 102 and the semiconductor memory 1162, respectively. .

  In the following, a basic operation when the portable disk drive device 101 is connected to another device will be described with reference to FIG.

  When the portable disk drive device 101 is built in the video recorder 1107, it is electrically connected to the video recorder 1107 via the second external connector 1163b. When the video recorder 1107 is turned on, the control circuit 1161 included in the portable disk drive device 101 first confirms the setting of the erroneous erasure prevention mode of the portable disk drive device 101 with respect to the erroneous erasure prevention switch 1164.

  If the activation prohibit mode is set, the control circuit 1161 informs the video recorder 1107 that the activation is impossible and stops the subsequent processing. As a result, when very important data is recorded in the HDD main body 102, the disk that increases dramatically when the HDD main body 102 is activated and the head that has been saved outside the disk moves onto the magnetic disk. The risk of damage can be eliminated and the data in the portable disk drive device 101 can be stored more safely.

  In other modes, the control circuit 1161 acquires information from the address storage area 1162a, the image data storage area 1162b, the remaining amount storage area 1162c, and the like on the semiconductor memory 1162, and transfers the acquired information to the video recorder 1107. Thereafter, the HDD main body 102 is activated to shift the HDD main body 102 to a standby state for writing / reading.

  As described above, the information on the recording contents of the HDD main body 102 is called from the semiconductor memory 1162 before the HDD main body 102 is activated, so that the contents of the portable disk drive device 101 can be grasped in a shorter time.

  Next, when information is recorded on or reproduced from the HDD main body 102, the control circuit 1161 of the portable disk drive device 101 operates while the HDD main body 102 reads / writes data according to an instruction from the video recorder 1107. The address management information on 102 is read at a fixed timing and stored in the address storage area 1162a on the semiconductor memory 1162. As a result, even if the address management area on the HDD main body 102 is damaged and the data on the disk cannot be read, it is possible to restore the data by referring to the information on the address storage area 1162a on the semiconductor memory 1162. become.

  As is clear from the above description, in the portable disk drive device 101 according to the present embodiment, representative information related to the HDD main body 102 is stored in the semiconductor memory 1162 mounted on the portable disk drive device 101, and the HDD main body. By making it possible to read data independently of each other or to reference each other's data, the contents recorded in the HDD main body 102 can be grasped in a short time and the data recorded in the HDD main body 102 can be read. Safety can be increased.

  In the above description, the method in which the semiconductor memory 1162 is fixed on the substrate 106 has been described. However, a memory slot (not shown) that holds the semiconductor memory 1162 in a detachable manner while being connected to the substrate 106 is provided. It is also conceivable that the semiconductor memory 1162 can be replaced with the portable disk drive device 101. In this case, the case 111 has an opening, and the semiconductor memory can be exchanged from the opening. According to this, even when it becomes necessary to expand the capacity of the semiconductor memory 1162 as a signal input / output buffer memory or management information storage means of the HDD main body 102, it is convenient that the user can easily replace it. As the replaceable semiconductor memory 1162 in this configuration, a general-purpose memory card such as an SD memory card, a multimedia card, or a CF memory card is desirable.

(Embodiment 7)
This embodiment will be described with reference to the portable disk drive device 701 described with reference to FIG. Here, it is assumed that the portable disk drive device 701 has the circuit configuration shown in FIG.

  Also, as shown in FIG. 7B, a second external connector 763b is provided on the lower surface 711b of the case 711 of the portable disk drive device 701. The second external connector 763b is connected to the control circuit 1161 (see FIG. 11) and has four electrical contacts according to the USB standard. However, the shape of the second external connector 763b differs from that of the standard standard connector, and the lower surface 711b. The electrical contacts are exposed to the side, and the electrical contacts are arranged along the ridgeline between the lower surface 711b and the fourth side surface 711f, and are located at the opposite end of the first external connector 763a. As shown in FIGS. 7B, 7E, and 7F, the second external connector 763b is disposed in the vicinity of the ridge line of the surface (711f) that faces the surface (711e) on which the first external connector 763a is disposed. Yes. The electric contact is plated with a sufficient thickness, and sufficient durability is ensured even when the number of times of attachment / detachment to / from the device is larger than that of the first external connector 763a. The second external connector 763b is provided with a partition wall between adjacent electrical contacts.

  Having two connectors in this way makes it possible to select a connection method suitable for the conditions (general versatility, durability, cable availability, etc.) required when each PC or AV device is used. Furthermore, by arranging both connectors at both ends of the portable disk drive device 701, the data of the HDD main body is read using the other connector even when the connector is inserted and fixed in one device. be able to. For example, when information cannot be extracted from the portable disk drive device 701 due to a failure of a device connected by the second external connector 763b, data is read by connecting a USB cable to the first external connector 763a, Alternatively, recorded data can be copied from another device that is recording to another device.

  Here, the erroneous erasure preventing configuration will be described. The fourth side surface 711f in the vicinity of the second external connector 763b is provided with an erroneous erasure prevention lever 712 for switching between three types of setting modes of writing permission to the HDD main body, writing prohibition (reading is possible), and start prohibition (see FIG. 7F). The erroneous erasure prevention lever 712 is mounted on the substrate 106 (see FIG. 11) and is interlocked with an erroneous erasure switch 1164 (see FIG. 11) for electrically switching between three types of modes. The setting mode at 12 can also be recognized from the control circuit 1161. Here, the control circuit 1161 confirms the setting of the erroneous erasure switch 1164 in the process before starting the HDD main body 102 after power is supplied to the portable disk drive device 101, and is supported by the erroneous erasure prevention lever 712. The HDD main body 102 is activated or the activation operation is stopped in the selected mode.

(Embodiment 8)
Embodiment 8 relates to an information recording / reproducing apparatus including a portable disk drive device that suppresses vibration of the portable disk drive device. The information recording / reproducing apparatus includes a video recorder and a personal computer.

  Embodiment 8 of the present invention will be described below.

  FIG. 12 shows a video recorder 1208 including the portable disk drive device 101. The video recorder 1208 has a holder 1281 that supports the portable disk drive device 101, and a main connector is installed in the holder 1281, which engages with an external connector of the portable disk drive device 101 and enters the HDD main body 102. Enables recording and playback of video information. The video recorder 1208 is configured to prevent vibration of the portable disk drive device 101.

  In addition, dampers 1285 are attached to the holder 1281 at four locations via damper support plates 1282, and the dampers 1285 are fixed to the frame 1284 of the video camera 1208, so that the holder 1281 floats viscoelastically with respect to the frame 1284. Supported.

  Further, a weight 1286 is movably attached to the holder, and the position of the center of gravity of the holder 1281 and the portable disk drive device 101 as a whole is supported by adjusting the position of the weight 1286 to be floating supported by the damper 1285 and the cable. Fine adjustments can be made.

  Here, the characteristic of the damper 1285 is that the resonance frequencies in the long side direction, the short side direction, and the thickness direction of the absorption unit of the portable disk drive device 101 in a state before being mounted on the holder 1281 are 180 to 290 Hz. On the other hand, the resonance frequencies of the long side direction, the short side direction, and the thickness direction of the disk drive main body of the portable disk drive device 101 in the state where it is mounted on the holder 1281 are set to about 80 Hz. As described above, by attaching the portable disk drive device 101 to the holder 1281, the resonance frequency of the portable disk drive device 101 in three directions (long side direction, short side direction, and thickness direction) is lower by 100 Hz or more. Take. If the resonance characteristic (overall characteristic) of the HDD main body 102 is measured with the video recorder 1208 as a reference under this condition, a result as shown in FIG. 13 is obtained. FIG. 13 is a graph showing the resonance frequency of the video recorder including the portable disk drive device according to the present embodiment. Here, in the graph of FIG. 13, the disk drive device absorbing member characteristic indicates the resonance frequency before the portable disk drive device 101 is mounted on the holder 1281, the damper characteristic indicates the resonance frequency of the damper itself, and the overall characteristic. Indicates a resonance frequency after the portable disk drive device 101 is mounted on the holder 1281. As shown in FIG. 13, when the difference between the resonance frequencies in each direction is 100 Hz or more, the resonance (resonance magnification 18 dB) by the absorbing member of the absorbing portion of the portable disk drive device 101 is suppressed to 0 dB or less. In addition, it can be confirmed that the resonance of the damper 1285 overlaps the resonance of the absorption portion and the resonance is not amplified.

  Further, in this small video recorder 1208, the center of the portable disk drive device 101 and the entire holder 1281 in the plane substantially parallel to the disk-shaped recording medium (not shown in FIG. 12) built in the HDD main body, It is desirable to adjust the position of the weight 1286 so that the total moment applied by the elasticity of the damper 1285 and the cable is substantially zero. The weight 1286 is configured with a screw hole for attaching the damper 1285 to the frame portion 1284 as a long hole.

  As a result, around the center of gravity of the portion that is floatingly supported by the non-uniformity of the external force received from the damper 1285 and the cable 1287 with respect to the disturbance rocking motion in the disk-shaped recording medium surface where remarkable recording / reproducing performance is deteriorated particularly in the HDD. Can be eliminated by adjustment during assembly, and the occurrence of rocking motion from disturbance translational motion can be suppressed to reduce the frequency of recording / reproducing performance degradation under the actual usage conditions of the device. .

  FIG. 14 shows a video recorder 1408 including a portable disk drive device 101. As shown in FIG. 14, the video recorder 1408 includes a damper 1485 and a coil spring 1488 as vibration isolating means, and is substantially parallel to a disk-shaped recording medium (not shown in FIG. 14) built in the HDD main body 102. Desirably, the coil spring 1488 is arranged in the plane so that the straight line passing through the center of gravity X of the portable disk drive device 101 and the holder 1481 supported by the damper 1485 and the coil spring 1488 coincides with the axis of the coil spring 1488.

  As a result, the load generated by the coil spring 1488 acts only in the radial direction passing through the center of gravity X and does not act in the circumferential direction that generates a moment around the center of gravity. Therefore, even if a load variation due to a manufacturing or assembly problem of the coil spring 1488 occurs, it does not easily cause a swing around the center of gravity X, and the recording / playback performance of the HDD main body is further deteriorated due to the swinging motion. A difficult video recorder 1408 can be realized.

  As described above, in the video recorder 1208 equipped with the portable disk drive device 101 according to the present embodiment, the resonance frequency of the damper 1285 is set to be 100 Hz or more away from the resonance frequency of the absorption unit on the low frequency side, Due to the vibration damping effect in the high frequency range obtained by the damper 1285, it is possible to sufficiently suppress vibration amplification due to the high resonance magnification of the absorber, and to avoid deterioration of the data transfer rate of the HDD main body.

  Further, it acts around the center of gravity of the portion that is floatingly supported by the non-uniformity of the external force received from the damper 1285 or the cable against the disturbance rocking motion in the surface of the disk-shaped recording medium in which the recording / reproduction performance is significantly deteriorated in the HDD. The moment can be eliminated by adjustment at the time of assembly, and a stable recording / reproducing operation can be performed while suppressing the oscillating motion from the disturbance translational motion.

  Here, the movable weight 1286 mounted on the holder 1281 is used as means for eliminating the moment around the center of gravity, but as a means for obtaining the same effect, the mounting position of the damper 1285 can be provided to be adjustable. is there.

(Embodiment 9)
Embodiment 9 of the present invention will be described below.

  FIG. 15 shows a video camera 1508 according to this embodiment. As shown in FIG. 15, the video camera 1508 is configured to be detachable from the portable disk drive device 101 including the HDD main body 102, and continuously captures the image input unit 1591 used for image capturing and the image input from the image capture unit 1591. The motion vector detecting means 1592 for detecting the motion vector of the image resulting from the motion of the imaging means 1591, the absolute value level of the motion vector obtained from the motion vector detecting means 1592 and its duration, and the video camera 1508. It is determined that the main unit may be in the fall state, and the recording / reproducing operation by the head is stopped and retracted to the outside of the disk, and it is determined that the absolute value of the motion vector has decreased, and the head is moved onto the disk. Head evacuation control means 1593 for returning and restarting the recording / reproducing operation, and head evacuation control And having an image storage unit 1594 for temporarily storing the image input and image output signal read out from the HDD main body 102 from the imaging unit 1591 of the head during retraction by means 1593.

  Hereinafter, an operation when the video camera 1508 in this embodiment falls from a hand and receives a drop impact during a shooting operation will be described.

  During shooting, the motion vector detection unit 1592 of the video camera 1508 processes the data from the imaging unit 1591 in units of one frame and monitors the movement of the subject in a specific area on the screen. If the video camera 1508 is dropped too much, the video camera 1508 starts to fall freely, but the motion vector in this state is recognized as an abnormal value that is much larger than during normal shooting. The head saving control means 1593 determines that there is a high possibility that the video camera 1508 has dropped from the occurrence of this abnormal value and its duration, and sends a command to the HDD main body 102 to interrupt the recording operation and To the outside of the disk. Since these operations are performed instantaneously after the possibility of falling is detected, the video camera 1508 generally collides with the horizontal plane after the head of the HDD main body 102 is saved.

  The impact resistance performance of the HDD main body 102 is different between the operation when the head is on the disk and the non-operation when the head is retracted to the outer peripheral portion, and in the current 2.5 "HDD, the operation is 175G / non-operation 800G. There is a big difference, so when you fall during recording / playback, you can save the HDD main unit 102 from damage by including the recorded data, by retracting the head from the disk before the collision occurs. Can be enhanced.

  Even if the motion vector detecting unit 1592 detects an abnormal value, the video camera 1508 moves greatly when the photographer pans at a very high speed, or hits something during shooting. In some cases, there may be a situation where no fall actually occurs. In such a case, the head evacuation control unit 1593 temporarily evacuates the head to the outside of the disk, and at the same time, the input data from the imaging unit 1591 is stored in the image storage unit 1594, and the motion vector detection unit 1592 receives the data within a certain time. After confirming that the output has returned to the normal level, the HDD main body 102 resumes the recording operation, and the data stored in the image storage means 1594 is written into the HDD main body 102. Therefore, even when the motion vector detection unit 1592 temporarily shows an abnormal value for a reason other than the occurrence of the fall, it is possible to continue shooting without losing the recording data before and after detecting the abnormal value.

  As described above, in the video camera 1508 equipped with the portable disk drive device 101 according to the present embodiment, even if the video camera 1508 is dropped excessively, it is dropped from the motion vector between frames of the captured image. Since the possibility is detected and the head of the HDD main body 102 is collided with the horizontal surface while being retracted outside the disk, it is possible to reduce the risk that the HDD main body 102 is damaged and the already recorded data cannot be read. is there. Since the possibility of falling is detected from the motion vector between frames of the photographed image and the head of the HDD main body 102 is collided with the horizontal plane while being retracted outside the disk, the HDD main body 102 is damaged and the already recorded data is It is possible to reduce the risk of being unable to read.

  Furthermore, as in the present embodiment, the method of detecting an abnormality of the disk drive main body with the motion vector of the image being shot causes an abnormality to occur in the disk drive recording operation due to the gyro effect when an angular velocity is applied to the video camera by panning or the like. It is also effective for detection.

FIG. 1A is a schematic perspective view of a portable disk drive device 101 according to Embodiment 1 of the present invention. FIG. 1B shows a cross-sectional view of the portable disk drive device of FIG. 1A in the XY plane. FIG. 1C shows a cross-sectional view of the portable disk drive device of FIG. 1A in the XZ plane. FIG. 1D shows a cross-sectional view in the YZ plane of the portable disk drive device of FIG. 1A. FIG. 2A is a perspective view showing the shapes of the vibration absorbing unit and the shock absorbing unit included in the portable disk drive device 101. FIG. 2B is a perspective view showing a shape in which the vibration absorbing portion is disposed so as to be in contact with most of the side surfaces of the HDD main body and the case, and the shock absorbing portion is disposed so as to be in contact with other portions. FIG. 2C is a perspective view showing a shape in which the vibration absorbing portion is disposed so as to be in contact with the HDD main body and the central vicinity of the long side of the case, and the shock absorbing portion is disposed so as to be in contact with other portions. FIG. 3A is a schematic perspective view of a portable disk drive device according to a modification of the first embodiment. 3B shows a cross-sectional view of the portable disk drive device of FIG. 3A in the XY plane. FIG. 3C shows a cross-sectional view of the portable disk drive device of FIG. 3A in the XZ plane. FIG. 3D shows a cross-sectional view of the portable disk drive device of FIG. 3A in the YZ plane. FIG. 3E is a cross-sectional view of a plane parallel to the XZ plane of the portable disk drive device of FIG. 3A for explaining the arrangement of the protrusions. FIG. 3F is a sectional view of a plane parallel to the YZ plane of the portable disk drive device of FIG. 3A for explaining the arrangement of the protrusions. 4A shows an enlarged view of the vicinity of the protrusion of FIG. 3B. FIG. 4B shows an enlarged view of the vicinity of the protrusion, which is an alternative example of FIG. 4A. FIG. 5A is a graph showing that the resonance frequency in the short side direction of the rectangular surface of the HDD main body is 289.2 Hz. FIG. 5B is a graph showing that the resonance frequency in the long side direction of the rectangular surface of the HDD main body is 162.1 Hz. FIG. 6 shows a performance improvement effect in the case of FIG. 5A and FIG. 5B compared with the case where the resonance frequencies in the long side direction and the short side direction are 114 Hz and 146 Hz, respectively. The result of evaluating OK / NG of the recording performance is shown below. FIG. 7A shows a surface 711a of the portable disk drive device 701 according to the second embodiment. FIG. 7B shows a surface 711b of the portable disk drive device 701 according to the second embodiment. FIG. 7C shows a surface 711c of the portable disk drive device 701 according to the second embodiment. FIG. 7D shows a surface 711d of the portable disk drive device 701 according to the second embodiment. FIG. 7E shows a surface 711e of the portable disk drive device 701 according to the second embodiment. FIG. 7F shows a surface 711f of the portable disk drive device 701 according to the second embodiment. FIG. 8A shows a surface 811a of a portable disk drive device 801 according to a modification of the second embodiment. FIG. 8B shows a surface 811b of a portable disk drive device 801 according to a modification of the second embodiment. FIG. 8C shows a surface 811c of a portable disk drive device 801 according to a modification of the second embodiment. FIG. 8D shows a surface 811d of a portable disk drive device 801 according to a modification of the second embodiment. FIG. 8E shows a surface 811e of a portable disk drive device 801 according to a modification of the second embodiment. FIG. 8F shows a surface 811f of a portable disk drive device 801 according to a modification of the second embodiment. FIG. 9A shows a schematic perspective view of the portable disk drive device 901. FIG. 9B shows a cross-sectional view of the portable disk drive device 901 on the XY plane. FIG. 9C shows a cross-sectional view of the XZ plane of the portable disk drive device 901. FIG. 9D shows a cross-sectional view of the portable disk drive device 901 on the YZ plane. FIG. 10A shows a surface 1011a of the portable disk drive device 1001 according to the fifth embodiment. FIG. 10B shows a surface 1011b of the portable disk drive device 1001 according to the fifth embodiment. FIG. 10C shows a surface 1011c of the portable disk drive device 1001 according to the fifth embodiment. FIG. 10D shows a surface 1011d of the portable disk drive device 1001 according to the fifth embodiment. FIG. 10E shows a surface 1011e of the portable disk drive device 1001 according to the fifth embodiment. FIG. 10F shows a surface 1011f of the portable disk drive device 1001 according to the fifth embodiment. FIG. 11 is a schematic diagram of a circuit configuration of the portable disk drive device 101. FIG. 12 shows a video recorder 1208 including the portable disk drive device 101. FIG. 13 is a graph showing the resonance frequency of the video recorder including the portable disk drive device 101 according to the eighth embodiment of the present invention. FIG. 14 shows a video recorder 1408 including a portable disk drive device 101. FIG. 15 shows a video camera 1508 according to the ninth embodiment. FIG. 16 shows a conventional example for improving the impact resistance performance of the HDD disclosed in Japanese Patent Laid-Open No. 5-314745.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Portable disk drive apparatus 111 Case 102 HDD main body 103a Vibration absorption part 103b Shock absorption part 106 Board | substrate

Claims (34)

A disk drive main body having a disk-shaped recording medium and recording information on the disk-shaped recording medium or reproducing information recorded on the disk-shaped recording medium;
A case enclosing the disk drive body;
A vibration absorbing means disposed between the disk drive main body and the case for absorbing vibration from the case to the disk drive main body;
A portable disk drive device comprising shock absorbing means disposed between the disk drive main body and the case and configured to absorb an impact from the case to the disk drive main body. The disk drive body has a rectangular parallelepiped shape formed from six surfaces,
The vibration absorbing means is arranged to contact at least one of the six surfaces forming the disk drive body, and the shock absorbing means is at least one of the six surfaces forming the disk drive body. The portable disk drive device according to claim 1, wherein the portable disk drive device is disposed in contact with a surface. The disk drive body has a rectangular parallelepiped shape formed from six surfaces,
The vibration absorbing means is disposed in the vicinity of at least one vertex of the rectangular parallelepiped shape of the disk drive body or in the vicinity of at least one ridge line, and the shock absorbing means is in the vicinity of at least one vertex of the rectangular parallelepiped shape of the disk drive body. The portable disk drive device according to claim 1, wherein the portable disk drive device is disposed in the vicinity of at least one ridge line.   The portable disk drive device according to claim 1, wherein the vibration absorbing means is disposed so as to sandwich the disk drive main body. The disk drive body is formed from six surfaces and has a rectangular parallelepiped shape having 12 sides,
The vibration absorbing means is disposed in the vicinity of at least one pair of parallelly opposed surfaces of the rectangular parallelepiped disk drive main body or at least one pair of ridge lines opposed in parallel of the rectangular parallelepiped disk drive main body. Item 5. The portable disk drive device according to Item 4.   6. The portable disk drive device according to claim 5, wherein the vibration absorbing means is disposed in the vicinity of four sides perpendicular to the widest surface among the six surfaces of the disk drive body.   The portable disk drive device according to claim 1, wherein the vibration absorbing means and the shock absorbing means include a buffer member.   The portable disk drive device according to claim 7, wherein the elastic constant of the vibration absorbing means is different from the elastic constant of the shock absorbing means.   The portable disk drive device according to claim 7, wherein the natural frequency of the vibration absorbing means is different from the natural frequency of the shock absorbing means.   The portable disk drive device according to claim 7, wherein a hardness of the vibration absorbing means is greater than a hardness of the shock absorbing means.   The portable disk drive device according to claim 1, wherein the vibration absorbing means is made of a member different from the shock absorbing means.   The portable disk drive device according to claim 1, wherein the vibration absorbing means is made of the same member as the shock absorbing means, and the vibration absorbing means is a compression of the vibration absorbing means. A disk drive main body having a disk-shaped recording medium and recording information on the disk-shaped recording medium or reproducing information recorded on the disk-shaped recording medium;
A case including the disk drive body and having a convex portion on the inner surface;
A portable disk drive device comprising: an absorbing means disposed between the disk drive main body and the case so as to be partially compressed by a convex portion of the case.   The absorbing means is provided with a concave portion that engages with the convex portion of the case, and the convex portion of the case and the concave portion of the absorbing means are engaged to compress the vicinity of the concave portion of the absorbing means. 14. The portable disk drive device according to claim 13, wherein the recess of the absorbing means is disposed. The disk drive body is formed from six surfaces and has a rectangular parallelepiped shape having 12 sides,
The case is provided with a plurality of convex portions corresponding to the vicinity of four sides perpendicular to the widest surface of the six surfaces of the disk drive main body, and the plurality of convex portions are the plurality of convex portions. The portable disk drive device according to claim 13, wherein the absorbing means between the storage unit and the disk drive body is compressed. A disk drive main body having a disk-shaped recording medium and recording information on the disk-shaped recording medium or reproducing information recorded on the disk-shaped recording medium;
A case enclosing the disk drive body;
An absorption means disposed between the disk drive body and the case,
The disk drive body has one plane parallel to the disk-shaped recording medium, the plane is rectangular, and a mechanical resonance frequency between the absorbing means and the disk drive body in the long side direction of the plane. And the absolute value of the difference between the absorption means in the short side direction of the plane and the mechanical resonance frequency of the disk drive body is 100 Hz or more. A disk drive main body having a disk-shaped recording medium and recording information on the disk-shaped recording medium or reproducing information recorded on the disk-shaped recording medium;
A case enclosing the disk drive body,
The first surface of the outer surface of the case is provided with a first grounding portion that is grounded to the horizontal surface when the case is disposed on a horizontal surface, and a second grounding portion that is different from the first grounding portion. A portable disk drive device.   18. The first grounding portion and the second grounding portion are provided so as to face a projected point of the center of gravity of the entire portable disk drive device with respect to the first surface of the case. Portable disk drive device. Further comprising absorbing means disposed between the disk drive body and the case;
18. The portable disk drive device according to claim 17, wherein a natural frequency of each of the first grounding unit and the second grounding unit is higher than a natural frequency of the absorbing unit.   The portable disk drive device according to claim 17, wherein a natural frequency of one of the first grounding unit and the second grounding unit is higher than a natural frequency of the other grounding unit.   The portable disk drive device according to claim 17, wherein a material of the first grounding portion is different from a material of the second grounding portion.   22. The portable disk drive device according to claim 21, wherein one of the first grounding unit and the second grounding unit is made of a rigid material, and the other grounding unit is made of an elastic material.   One of the first grounding portion and the second grounding portion is made of a rigid material, and the other grounding portion is made of an elastic material and a rigid material provided on the first surface side. Item 22. The portable disk drive device according to Item 21.   The grounding portion of one of the first grounding portion and the second grounding portion is made of a highly repulsive elastic material, and the other grounding portion is made of a low rebounding elastic material. Portable disk drive device. The material of the first grounding part is the same as the material of the second grounding part,
The portable disk drive device according to claim 17, wherein a grounding area of the first grounding unit is different from a grounding area of the second grounding unit. The material of the first grounding part is the same as the material of the second grounding part,
The portable disk drive device according to claim 17, wherein a height of the first grounding portion is different from a height of the second grounding portion. A disk drive main body having a disk-shaped recording medium and recording information on the disk-shaped recording medium or reproducing information recorded on the disk-shaped recording medium;
A portable disk drive device comprising a case containing the disk drive body and having a surface provided with a convex portion on the outer surface;
The convex portion is arranged only on one side of the surface with respect to the projection point of the center of gravity of the entire portable disk drive device with respect to a horizontal plane, or the projection of the center of gravity of the entire portable disk drive device with respect to the horizontal plane. A portable disk drive device that is distributed in the vicinity of a straight line on the surface passing through a point.   28. The portable disk drive device according to claim 27, wherein the convex portion is formed substantially parallel to the ridge line of the surface and continuously or intermittently.   29. The portable disk drive device according to claim 28, wherein a guide groove is provided on the surface substantially parallel to the convex portion, and a surface in which a surface of the convex portion and a wall surface of the guide groove are continuous is formed.   The height of the convex portion is such that when the convex portion and the ridge line of the surface of the case are simultaneously grounded on the horizontal plane, the projection point of the center of gravity of the entire portable disk drive device with respect to the horizontal plane is the height of the convex portion. 29. The portable disk drive device according to claim 28, wherein the portable disk drive device has a height that does not lie between a ridge line on the surface of the case. A disk drive main body having a disk-shaped recording medium and recording information on the disk-shaped recording medium or reproducing information recorded on the disk-shaped recording medium;
A portable disk drive device comprising a case containing the disk drive body,
The case has a surface, and when the surface of the case is arranged on a horizontal plane, the projection point of the center of gravity of the entire portable disk drive device with respect to the horizontal plane is outside the surface of the case or on the case. A portable disk drive device located near the edge of the surface. The surface of the case is a plane,
32. The portable disk drive device according to claim 31, wherein the case has a shape in which at least one ridge line of a rectangular parallelepiped shape formed from six surfaces is cut out. The surface of the case is a plane,
32. The portable disk drive device according to claim 31, wherein an angle formed between a plane of the case and an adjacent surface is different from a right angle.   32. The portable disk drive device according to claim 31, wherein the surface of the case is an R surface configured by a combination of a plurality of curved surfaces.

Images