JP2003242764A - 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 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; a vibration absorption means 103a arranged between the disk drive main body 102 and the case 111 for absorbing 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 impacts from the case 111 to the disk drive main body 102. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable disk drive device that makes a disk drive body portable and an information recording / reproducing device equipped with the portable disk drive device.

[0002]

2. Description of the Related Art In recent years, hard disks have been increasing in capacity and transfer rate, and in the field of handling video signals where magnetic tapes have been the mainstream until now, servers used for temporary storage and transmission, large capacity data. Its use as a backup or archive system for long-term storage, video editing equipment, etc. is expanding rapidly.

Further, 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) that drives a hard disk, which is often used by fixing it in a device, is used as a portable medium like a magnetic tape, and a video camera is used. , Is being used as a recording medium for digital still cameras and portable personal computers.

However, with respect to the weakness of impact resistance due to the extremely precise structure, which has been one of the drawbacks of HDDs in the past, a product that has been fundamentally solved has not yet appeared. .

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

The flexible cable 1611 connecting the connector 1605 provided on the HDD body 1602 and the connector 1607 of the outer box 1606 and the plurality of shock absorbing parts 1612, 1613 separate the HDD body 1602 from the inner surface of the outer box 1606. Will be supported.

In the above structure, the impact from the outside is first
It is absorbed by the elastic outer box 1606, and then the shock absorbing portion 161.
2, 1613 and the flexible cable 1611 absorb. As a result, the shock resistance performance of the HDD body 102 when not in operation and during operation is improved.

[0009]

However, in the case where the HDD pack 1601 of the above-mentioned conventional example is designed with the impact resistance as the highest priority, the comparison is made in order to suppress the acceleration generated by the impact within the given buffer space. A method of broadening the time width of the shock acceleration pulse and lowering the peak of acceleration by using a shock absorbing part made of a soft material is generally used. That is, the resonance frequency of the member of the shock absorbing portion in the HDD pack, which is determined by the relationship between the HDD body and the member of the shock absorbing portion, 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 holding force for the HDD main body, so that the vibration in the HDD pack
The DD body tends to be in an unstable state. When the component of the vibration in the in-plane direction of the disk of the HDD main body is large, the oscillating motion within the disk plane of the HDD main body is likely to occur. in this case,
There arises a problem that the transfer rate of the HDD main body is significantly deteriorated and the recording / reproducing performance is significantly deteriorated. Further, when the resonance frequency of the member of the shock absorbing portion is a low frequency level of 60 Hz or less, the frequency of vibration applied to the HDD pack in a use environment such as hand carry or in-vehicle becomes close to the resonance frequency in the HDD pack, and resonance occurs. As a result, a more violent swing occurs and the transfer rate of the HDD main body is likely to deteriorate. As described above, the conventional HDD pack has a problem that it cannot have both impact resistance and vibration resistance.

Further, when the HDD main body is mounted on a video camera or the like and used, it is necessary to assume impact resistance of a drop height exceeding 1 m, and further improvement of impact resistance performance is required including the optical disc drive. ing.

The present invention solves the above-mentioned problems of the prior art by ensuring shock-proof performance when a portable disk drive device such as an HDD pack is dropped, and preventing deterioration of the transfer rate of the disk drive body under vibration conditions. An object of the present invention is to provide a portable disk drive device that can achieve both suppression and suppression.

[0012]

In order to achieve the above-mentioned 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 A disc drive main body for reproducing information recorded on a disc-shaped recording medium, a case enclosing the disc drive main body, and a disc drive main body disposed between the disc drive main body and the case. A vibration absorbing means for absorbing vibration and a shock absorbing means arranged between the disk drive body and the case for absorbing a shock from the case to the disk drive body are provided.

With this configuration, the vibration absorbing means having high hardness absorbs the vibration from the case to the disk drive main body if the acceleration level is about several G even when external vibration is applied, and the unnecessary disk drive main body Oscillation is suppressed and deterioration of the transfer rate of the disk drive body is suppressed. In addition, when a large shock is applied such as when dropped, a shock-absorbing means having a low hardness and a high vibration absorption effect mainly acts to realize a portable disk drive exhibiting high shock resistance.

The disk drive body has a rectangular parallelepiped shape formed from six surfaces, and the vibration absorbing means is
The disk drive body is disposed near at least one apex of the rectangular parallelepiped shape or near at least one ridgeline, and the shock absorbing means is near at least one apex or near at least one ridgeline of the rectangular parallelepiped shape of the disk drive body. May be located at.

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

The disk drive body has a rectangular parallelepiped shape having six sides and 12 sides, and the vibration absorbing means has at least one set of parallel-opposing surfaces of the rectangular parallelepiped disk drive body. Alternatively, they may be arranged in the vicinity of at least one pair of ridge lines that face each other in parallel to the disk drive body having the rectangular parallelepiped shape.

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 cushioning 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 hardness of the vibration absorbing means may be greater than the hardness of the shock absorbing means.

In such a structure, the vibration absorbing means having high hardness is arranged so as to absorb the vibration to the disk drive main body and suppress the in-plane swing of the disk-shaped recording medium, so that the disk drive main body can be more reliably operated. It is possible to suppress the deterioration of the transfer rate.

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

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

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

Further, the portable disc drive device according to the present invention has a disc-shaped recording medium, and records information on the disc-shaped recording medium or reproduces information recorded on the disc-shaped recording medium. Between the disk drive body and the case, which encloses the disk drive body and has a convex portion on its inner surface, and a portion of the disk drive body is compressed by the convex portion of the case. Absorption means arranged as described above.

With this structure, the portion of the absorbing means that is compressed by the convex portion supports the end portion of the disk drive body with greater rigidity than the other portions, and absorbs the vibration from the case to the disk drive body. As a result, the fluctuation of the disc-shaped recording medium in the disc surface is suppressed, and the transfer rate deterioration of the disc drive body can be suppressed. In addition, when a large shock is applied, such as when dropped, other parts of the absorbing means, that is, the parts that are not compressed and have a high shock absorbing effect mainly act to exert high shock 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 with each other to compress the vicinity of the concave portion of the absorbing means. Thus, the recess of the absorbing means may be arranged.

The disk drive body has a rectangular parallelepiped shape having six sides and 12 sides, and is located in the vicinity of four sides perpendicular to the widest side of the six sides of the disk drive body. Correspondingly, 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.

Further, the portable disc drive device according to the present invention has a disc-shaped recording medium, and records information on the disc-shaped recording medium or reproduces information recorded on the disc-shaped recording medium. A disk drive body, a case enclosing the disk drive body, and an absorbing means arranged between the disk drive body and the case, the disk drive body being parallel to the disk-shaped recording medium. The plane has a rectangular shape, and the plane has a rectangular shape, and the mechanical resonance frequency between the absorbing means and the disk drive body in the long side direction of the plane and the absorbing means in the short side direction of the plane The absolute value of the difference from the mechanical resonance frequency of the disk drive body is 100 Hz or more.

With this configuration, when vibration is applied to the portable disk drive device, the resonance frequencies are close in the short side direction and the long side direction of the disk drive body,
It is possible to realize a portable disk drive device in which the transfer rate of the disk drive body is not significantly deteriorated due to the oscillation in the disk surface of the disk-shaped recording medium due to the vibration crosstalk in the vicinity of each resonance frequency.

Further, the portable disc drive device according to the present invention has a disc-shaped recording medium and records information on the disc-shaped recording medium or reproduces information recorded on the disc-shaped recording medium. And a case enclosing the disk drive body, wherein the first surface of the outer surface of the case is grounded to the horizontal surface when the case is arranged on the horizontal surface.
And a second grounding part different from the first grounding part.

With such a configuration, when the portable disk drive device falls on a plane parallel to the horizontal plane, the first case of the portable disk drive device differs due to the difference between the first ground portion and the second ground portion. A reaction force of different magnitude acts on the surface of the and causes a moment to be applied, causing it to bounce while rotating immediately after it is dropped, and part of the energy caused by the drop impact is converted into kinetic energy of the portable disk drive device. . Therefore, it is avoided that the energy of the drop impact concentrates and acts on the internal disk drive body and the absorbing means, and the peak of the acceleration received by the disk drive body is reduced.

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

An absorption means arranged between the disk drive body and the case is further provided, and the natural frequencies of the first ground portion and the second ground portion are respectively the natural frequencies of the absorption means. It may be higher than the number.

The natural frequency of one of the first grounding portion and the second grounding portion may be higher than the natural frequency of the other grounding portion.

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

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

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

One of the first ground portion and the second ground portion is made of a highly repulsive elastic material,
The other grounding portion may be made of a low-resilience 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 portion is the same as the material of the second grounding portion, and the height of the first grounding portion is
It may be different from the height of the second ground portion.

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

With this configuration, when the case surface of the portable disk drive device falls parallel to the horizontal plane, the time when the convex portion comes into contact with the ground due to the positional relationship between the center of gravity and the convex portion of the entire portable disk drive device. Then, a moment is generated in the portable 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, a collision occurs twice or more with the rotation operation of the portable disk drive device, and the energy due to the drop impact is partially converted into the rotational kinetic energy of the portable disk drive device. It will be dispersed to multiple impacts and added to the disk drive. Therefore, concentrated impact of drop impact energy on the internal disk drive and buffer means is avoided, and the peak of acceleration applied to the disk drive is reduced.

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

A guide groove may be provided on the surface substantially parallel to the convex portion, and a surface of the convex portion and a wall surface of the guide groove may form a continuous flat surface.

The height of the convex portion is such that when the convex portion and the ridgeline of the surface of the case are grounded on the horizontal plane at the same time,
The height may be such that the projection point of the center of gravity of the entire portable disk drive device with respect to the horizontal plane is not located between the convex portion and the ridgeline on the surface of the case.

A portable disc drive device according to the present invention has a disc-shaped recording medium and records information on the disc-shaped recording medium or reproduces information recorded on the disc-shaped recording medium. A portable disk drive device comprising a main body and a case enclosing the disk drive main body, wherein the case has a surface, and when the surface of the case is arranged in a horizontal plane, the portable disk drive device can be attached to the horizontal plane. The projection point of the center of gravity of the entire portable disk drive device is located outside the surface of the case or near the ridgeline of the surface of the case.

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

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

With this configuration, when the surfaces of the portable disk drive device fall parallel to the plane, the inclined surface is grounded due to the positional relationship between the position of the center of gravity of the entire portable disk drive device and the ridgeline of the inclined surface. At this point, the portable disk drive device receives a rotation moment, and further, its posture changes with rotation until one end of the case collides with a flat surface. Also, 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, a collision occurs twice or more with the rotating operation of the portable disk drive device, and a part of the energy due to the drop impact is converted into the rotational kinetic energy of the portable disk drive device. It will be dispersed by the shock of the time and added to the disk drive body. Therefore, it is avoided that the energy of the drop impact concentrates and acts on the internal disk drive body and the absorbing means, and the peak of the acceleration received by the disk drive body is reduced.

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

With this configuration, when the portable disk drive device falls parallel to the plane, the R-position is taken from the positional relationship between the center of gravity of the entire portable disk drive device and the R surface.
When a part of the surface is grounded, the portable disk drive device receives a rotation moment, and further, the posture changes with rotation until one end of the case collides with the flat surface. as a result,
At the time of a drop impact, a collision occurs more than once with the rotating operation of the portable disk drive device, and a part of the energy from the drop impact is converted into the rotational kinetic energy of the portable disk drive device and dispersed into multiple impacts. Then it will be added to the disk drive body. Therefore, it is avoided that the energy of the drop impact concentrates and acts on the internal disk drive body and the absorbing means, and the peak of the acceleration received by the disk drive body is reduced.

Further, the portable disc drive device according to the present invention has a disc-shaped recording medium and records information on the disc-shaped recording medium or reproduces information recorded on the disc-shaped recording medium. A portable disk drive device comprising a disk drive main body and a case enclosing the disk drive main body, wherein the position of the spatial center of the case is greater than the position of the center of gravity of the entire portable disk drive device. It is heavily weighted.

An absorbing means disposed between the disk drive body and the case is further provided, and a portion of the absorbing means located near the position of the center of gravity is closer to the case than the other portion. The shock to the disk drive body may be further absorbed.

The vibration absorbing means and the shock absorbing means may include a cushioning member. Even if the thickness of the portion of the absorbing means located near the position of the center of gravity is thicker than the thickness of other portions. Good.

The disk drive body may have a connector, and the connector may be arranged at a position largely deviated from the center of gravity of the entire portable disk drive device.

A weight may be further provided between the case and the disk drive body in order to deviate the position of the center of gravity with respect to the spatial center of the case.

The weight may be a container in which a fluid, powder or granules are movably enclosed inside.

With such a configuration, the position of the center of gravity of the entire portable disk drive device is largely deviated from the position of the spatial center of the case, so that when the portable disk drive device falls, a specific portion becomes a horizontal plane. Increases the probability of collision. In order to increase the impact absorption capacity near that 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 thinner It is possible to efficiently improve the impact resistance performance of the portable disk drive device as compared with the case of the same thickness. Also, in order to make the position of the center of gravity of the entire portable disk drive device deviate from the spatial center of the case, by incorporating a container containing fluid etc. as a weight into the portable disk drive, the energy added by the drop impact can be reduced. Is partially consumed as the kinetic energy of the enclosed fluid, and the energy of impact acting on the disk drive body and the absorbing means can be reduced.

Further, the portable disc drive device according to the present invention has a disc-shaped recording medium, and records information on the disc-shaped recording medium or reproduces information recorded on the disc-shaped recording medium. A disk drive body, a case enclosing the disk drive 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 an irreversible deformable member.

The protective member may be a plastically deformable member.

The protective member may be detachably attached to the case.

Further, the portable disc drive device according to the present invention has a disc-shaped recording medium, and records information on the disc-shaped recording medium or reproduces information recorded on the disc-shaped recording medium. A portable disk drive device comprising: a disk drive main body, a case enclosing the disk drive main body, and a protective member arranged on an outer surface of the case and covering a part of the case. The protection member is arranged near the center of gravity of the entire drive device.

With this structure, when the portable disk drive device falls, the protective member first collides with the horizontal surface, and the protective member is destroyed or plastically deformed so that part of the energy due to the drop impact is absorbed, and the weakened energy is absorbed by the case. Since it is transmitted to the internal buffering means and the disk drive via the, it is possible to improve the shock resistance of the portable disk drive device. In addition, since the destroyed or deformed protective member can be easily removed and replaced with a new protective member, the outer shape can be quickly restored, and even when the portable disk drive device is loaded into another device and used. It does not interfere with the attachment / detachment of the equipment.

Further, the portable disc drive device according to the present invention has a disc-shaped recording medium, and records information on the disc-shaped recording medium or reproduces information recorded on the disc-shaped recording medium. Then, a disk drive body provided with a drive connector, an external connector for receiving a signal from the outside, and a signal of the first method received by the external connector into a signal of a second method different from the first signal. A signal converting unit for converting, a storage unit for storing the first signal or the second signal, a storage unit for storing the first signal or the second signal, and the disk drive body and the disk drive body. And a signal control means for controlling the input or output of a signal to and from the external connector and the storage means.

The signal control means may cause the signal received by the external connector to be recorded in the disk drive body and the storage means.

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 into a signal of a different system by the signal conversion means, and record the signal in the disk drive body and the storage means.

The signal control means converts the signal received by the external connector by the signal conversion means into a signal of a different system, and causes the disk drive body and the storage device to record a signal of a different system. Good.

The storage means may include a semiconductor memory.

The case has an opening, the storage means includes a semiconductor memory and memory holding means for holding the semiconductor memory in a removable manner, and the semiconductor memory can be exchanged through the opening of the case. It may be.

The storage means has an address storage area for storing the 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. At the same time, the address management information in the storage means may be read out and sent to the disk drive main body if necessary.

When the image information is recorded in the portable disk drive device, the accumulating means manages still image data representative of all the still image or moving image data stored in the accumulating means as image data management. It may have an image data storage area to be stored as information, and the signal control means may send the image data management information according to a signal input from the external connector.

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

With such a configuration, it is possible to selectively store or take out moving images or still images of different bit rates in the disk drive body and the storage means according to the purpose, and to simultaneously record images of a plurality of bit rates. Alternatively, it is possible to easily realize simultaneous recording of a still image while recording a moving image. In addition, the portable disk drive device can be used as another device by providing a storage means for storing address management information, image data management information, remaining amount management information of the recording area, etc. in the disk drive body separately from the disk-shaped recording medium. When used by connecting to, the information can be read out instantly without waiting for the start of the disk drive body. Further, 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.

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

The plurality of external connectors have a first external connector and more electrical contacts than the first external connector, and a second external connector having a shape different from that of the first external connector. And may be included.

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

The first external connector and the second external connector may be separately arranged near both ends of the case.

The case has a rectangular parallelepiped shape formed from six surfaces, and the second external connector is the first external connector.
It may be arranged in the vicinity of the ridgeline of the surface opposite to the surface on which the external connector is arranged.

Absorbing means arranged between the disk drive body and the case, signal converting means for converting an output signal from the disk drive body into another signal of a different system, and connected to the signal converting means. A storage means capable of temporarily storing a signal input / output to / from the disk drive body; a cable for connecting the signal conversion means and the drive body connector to transmit a signal; the disk drive body and the first Signal input / output between the external connector and the second external connector, and signal control means for controlling the storage means.

With such a configuration, both a general-purpose interface standard connector for connecting to a PC and the like and a dedicated connector having durability and wearability suitable for connecting to a video recorder or a video camera are provided. By handling the same signal, it can be expanded to devices for various purposes, and by placing both connectors separately on both ends of the portable disk drive device, it was inserted and fixed in one device. Even in the state, you can use the other connector to read the data of the disk drive body, suck up the data when the portable disk drive measure cannot be taken out due to the failure of the inserted device,
It becomes possible to copy the recorded data from the device in the recording operation to another device.

Further, an erroneous erasure prevention means for switching the permission / prohibition setting of writing to the disk drive body to both the first external connector and the second external connector at the same time may be further provided. Good.

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

With this configuration, no matter which of the two external connectors is used to connect to another device, the data in the disk drive body will not be erased by mistake.

The erroneous erasure prevention means may have at least one mode of write permission, write inhibition (readability), and activation inhibition for the disk drive body.

With such a configuration, the disk drive main body and the disk-shaped recording generated by operating the disk drive main body by selecting the start prohibition mode are not limited to the write prohibition on the medium containing the important recording data. The risk of damaging the medium can also be avoided.

Further, the portable disk drive device according to the present invention is provided with a 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. By further comprising a built-in battery for supplying power and a power button for instructing power supply from the built-in battery, by turning on the power button,
The signal control unit may read the remaining amount management information stored in the storage unit and display it on the remaining amount display unit.

With such a configuration, it is possible to confirm the recordable data capacity or the recordable time with 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 pictogram in Byte units.

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

An information recording / reproducing apparatus using the portable disk drive device according to the present invention records information on a disk-shaped recording medium or reproduces information recorded on the disk-shaped recording medium. A holder part for detachably supporting a portable disk drive device having a rectangular parallelepiped disk drive body; a plurality of vibration isolating means for supporting the holder part; and a frame portion for fixing the vibration isolating means, For the respective resonance frequencies in the long side direction and the short side direction of the disk drive body and in the thickness direction of the disk drive body in the disk drive body before the portable disk drive device is attached to the holder part. , The portable disk drive device is mounted on the holder portion by the vibration isolator. Take the disk drive long side direction and a short side direction and the thickness value lower respective resonant frequencies are all above approximately 100Hz in the direction of the body in the state.

With this structure, the resonance frequencies of the plurality of vibration isolating means are set sufficiently lower than the resonance frequency of the absorbing means of the portable disk drive device, so that the vibrations in the high frequency range obtained by the plurality of vibration isolating means are obtained. It is possible to realize an information recording / reproducing apparatus using a portable disk drive device capable of sufficiently suppressing the vibration amplification due to the high resonance magnification of the absorbing means by the damping effect.

An information recording / reproducing apparatus using the portable disk drive device according to the present invention is a disc for recording information on a disc-shaped recording medium or for reproducing information recorded on the disc-shaped recording medium. A holder part for detachably supporting a portable disk drive device having a drive body, a plurality of vibration isolation means for supporting the holder part, a cable for transmitting an input / output signal of the portable disk drive device, and the protection part. The frame portion for fixing the vibrating means, and the center of gravity of the entire holder portion and the portable disc drive device supported by the vibration isolating means in a plane substantially parallel to the disc-shaped recording medium installed in the disc drive body. On the other hand, the center of gravity is adjusted to set the total moment applied by the vibration isolator and the elasticity of the cable to approximately zero And a stage.

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 section and the entire portable disk drive device is provided on the holder section. .

The center-of-gravity adjusting means may be constructed such that a mounting screw fixing hole of the vibration isolating means to the frame portion is an elongated hole.

With such a structure, the disk drive main body, in particular, the portion supported by the vibration-proof means against the disturbance oscillating motion in the surface of the disk-shaped recording medium in which the recording / reproducing performance is remarkably deteriorated. The moment acting due to the unevenness of the external force received from the vibration isolating means or the cable acting around the center of gravity is eliminated by the adjustment at the time of assembly. As a result, it is possible to suppress the rocking motion from being induced by the disturbance translational motion, and to reduce the frequency of occurrence of recording / reproducing performance deterioration under actual use conditions of the device.

An information recording / reproducing apparatus equipped with a portable disk drive device according to the present invention is a disc for recording information on a disc-shaped recording medium or for reproducing information recorded on the disc-shaped recording medium. A holder part for detachably supporting a portable disk drive device having a drive body, a plurality of vibration isolation means composed of a coil spring and a damper for supporting the holder part, and an input / output signal of the portable disk drive device. A cable for transmitting and a frame portion for fixing the vibration isolating means, and the coil spring is in a plane substantially parallel to the disc-shaped recording medium installed in the disc drive body,
A straight line passing through the center of gravity of the portable disk drive device supported by the vibration isolator and the entire holder portion is attached so that the axis of the coil spring is substantially aligned.

With this construction, the load of the coil spring acts only on the straight line toward the center of gravity of the portable disk drive device supported by the vibration-proof means and the holder part,
It 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 the normal supporting state, and the influence on the moment due to the individual difference such as the manufacturing variation of the coil spring is extremely small. This also allows
It is possible to suppress the occurrence of rocking motion from the disturbance translational motion, and reduce the frequency of occurrence of recording / reproducing performance deterioration due to the disturbance rocking motion in the surface of the disk-shaped recording medium 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 has a disk-shaped recording medium, and a disk drive in which information is written or read by a head part which is located on the disk-shaped recording medium and operates. A main body, an image pickup unit used for capturing an image, a motion vector detection unit for continuously processing an image input from the image pickup unit, and detecting a motion vector of the image caused by the movement of the camera, and the motion vector detection unit. From the absolute value level of the motion vector obtained from the means and its duration, it is determined that the device body may be in a falling state, and The recording / reproducing operation is stopped and the disk is retreated to the outside of the disk-shaped recording medium if necessary, and it is determined that the absolute value of the motion vector has decreased, and the head is returned to the disk-shaped recording medium. A head retracting control means for restarting the recording / reproducing operation, and an image accumulating means for temporarily storing an image input signal from the image capturing means during the head retracting operation by the head retracting control means and an image output signal read from the disk drive body. Equipped with.

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

With this configuration, even when the information recording / reproducing apparatus is accidentally dropped during the recording / reproducing operation of the disc drive, the motion vector of the image input from the image pickup means is detected, and based on the information. In order to discriminate that the information recording / reproducing apparatus is in a falling state and to retract the head from the disc-shaped recording medium, the drop impact causes the head and the disc-shaped recording medium to collide with each other. It is possible to prevent damage. Further, when a large motion vector is detected under a condition other than a fall by a user operation such as panning abruptly during the video camera recording operation, the input signal from the image pickup means is temporarily changed as the head retracts. It is possible to maintain a continuous recording operation by controlling the recording signal in the image storage means to be transferred to the disk drive after the head is restored from the retracted state.
Further, by selectively enabling / disabling this function, under a shooting condition in which a high-speed pan operation frequently occurs, by turning off the function, unnecessary saving of the head is eliminated and it is more stable. It is possible to record.

[0104]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the following description, the hard disk drive main body will be described as a specific example of the disk drive main body, but the disk drive main body is not limited to the hard disk drive main body. The disc drive body has a disc-shaped recording medium, and it is sufficient that the disc drive body can record information on the disc-shaped recording medium or reproduce the information recorded on the disc-shaped recording medium. The disc drive body includes the DVD drive body. .

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

(First Embodiment) A first embodiment of the present invention in which a portable disk drive device includes a vibration absorbing portion and a shock absorbing portion will be described.

FIG. 1A shows a portable disk drive device 1
A schematic perspective view of 01 is shown. In FIG. 1A, the portable disk drive device 101 is shown in a rectangular parallelepiped shape. In FIG. 1A, a portable disk drive device 1
From the spatial center O of 01 parallel to the ridge of the rectangular parallelepiped,
The X, Y and Z axes are shown.

FIG. 1B shows a portable disk drive device 1
The cross-sectional view of the XY plane of 01 is shown. 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.

The portable disk drive device 101 according to the present embodiment is provided with an HDD main body 102, a case 111 enclosing the HDD main body 102, a HDD main body 102 and the case 111, and the disk drive from the case 111. The vibration absorbing portion 103a that absorbs vibrations to the main body 102 and the disk drive main body 1 from the case 111.
And a shock absorbing portion 103b that absorbs a shock to 02.

In the following description of this specification, the vibration absorber 1 will be described.
Each of 03a and the shock absorbing portion 103b is described as including a cushioning member (cushion material, elastic material), but the present invention is not limited to this. The vibration absorbing portion 103a or the shock absorbing portion 103b only needs to absorb vibration or shock, and may include, for example, a mechanical member such as an actuator.

Vibration absorber 103a and shock absorber 10
When each of 3b includes a cushioning member, the vibration absorbing portion 103a generally has higher hardness than the shock absorbing portion 103b. Further, the elastic constant of the vibration absorbing portion 103a is preferably different from the elastic constant of the shock absorbing portion 103b. Alternatively, the natural frequency of the vibration absorber 103a is
It is desirable that the natural frequency of the shock absorbing portion 103b be different.

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. However, the portable disk drive device of the present invention has this shape. Note that it is not limited to

Vibration absorbers 103a arranged at four vertices of the rectangular cross section of the HDD body 102 shown in FIG. 1B.
Is the long side direction (direction parallel to the X axis in FIG. 1A), the short side direction (direction parallel to the Y axis in FIG. 1A) and the thickness direction (FIG. 1A).
HDD main body 10 in three directions (parallel to the Z-axis)
It is arranged so as to define the position of 2. The shock absorbing portion 103b is provided on the left and right side surfaces of the HDD body 102 (see FIG. 1A).
Of the HDD main body 102 (X-axis and Y-axis in FIG. 1A) so as to cover a plane parallel to the plane including the X-axis and the Z-axis of FIG.
A plane parallel to the plane including the axis), left and right side surfaces (a plane parallel to the plane including the X axis and Z axis of FIG. 1A), front and rear side surfaces (FIG. 1)
It is arranged between the case 111 and a plane parallel to the plane including the Y axis and the Z axis of A).

FIG. 2A shows a portable disk drive device 1
3 is a perspective view showing the shapes of a vibration absorbing portion 103a and a shock absorbing portion 103b included in 01. FIG. Vibration absorber 103
a is arranged so as to correspond to the vicinity of the eight vertices of the HDD main body 102 and the case 111, which are rectangular parallelepiped, and the shock absorbing portion 103b is arranged at the other portions. In FIG. 2A, the vibration absorber 103a is the HDD main body 1
It is arranged in the vicinity of four sides perpendicular to the widest surface of the six surfaces of No. 02.

Vibration absorber 103a and shock absorber 103b
May be used in combination of separately molded ones, or the two may be integrally molded by two-color molding or the like. Further, FIG. 2A shows a mode in which the vibration absorbing section 103a and the shock absorbing section 103b are separated into two for the purpose of explaining the configuration, 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 of them are made of a gel material having a high effect of absorbing force, but the vibration absorbing portion 103a is made of a gel material having a hardness higher than that of the shock absorbing portion 103b.

Here, as an example, the vibration absorbing portion 103a has a hardness of 90 degrees (Asker FP), and the shock absorbing portion 10a has a hardness of 90 degrees.
The hardness of 3b is preferably about 60 degrees (Asker FP). Further, the vibration absorbing portion 103a and the impact absorbing portion 103b may be made of a material such as urethane foam having a similar hardness difference, instead of a gel material.

Hereinafter, the portable disk drive device 101
A case in which vibration and impact are applied to will be described with reference to FIG. 1 from the viewpoint of the absorbing portion.

Since the conventional HDD main body is elastically supported by the relatively soft member of the shock absorbing portion, rocking motion easily occurs in the disk surface of the HDD main body, which deteriorates the recording / reproducing performance of the HDD main body. Therefore, there is a problem that the transfer rate of the HDD body is significantly deteriorated due to the vibration of a specific frequency.

On the other hand, in the portable disk drive device 101 according to the present invention, the HDD main body 102 is supported with a relatively high rigidity by the vibration absorbing portion 103a having high hardness. Even if a vibration of about several G is applied, the vibration absorber 1
03a supports the HDD main body 102 and the HDD main body 102
Since it is arranged so as to suppress the in-plane fluctuation of the disk, deterioration of the data transfer rate of the HDD body 102 can be suppressed.

Generally, a portable disk drive device 101 is used in a mobile environment such as a hand carry or a vehicle.
The frequency of the vibration received by is mainly in the 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, the resonance causes further rocking, and the HDD main body 102
The transfer rate is easily deteriorated. Therefore,
Vibration absorber 103a, shock absorber 103b and HDD
The resonance frequency of the portable disk drive device 101, which is determined by the main body 102, is preferably set to a high frequency range of approximately 60 Hz or higher.

Further, the portable disk drive device 101
Even when a shock 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, together with the vibration absorber 103a, is more shock resistant. Since the excellent shock absorbing portion 103b absorbs energy with a sufficiently large receiving area, the impact resistance performance of the portable disk drive device 101 is almost the same as that when only the shock absorbing portion 103b is used as a member of the absorbing portion. Is secured.

As described above, in the portable disk drive device 101 of this embodiment, the HDD body 1 during vibration
The vibration absorbing unit 103a optimized for supporting 02 and the shock absorbing unit 103b optimized for absorbing drop impact are used in combination, so that the HDD main body 1 caused by the drop impact 1
It is possible at the same time to prevent the damage of 02 and to suppress the deterioration of the data transfer rate of the HDD body 102 under the vibration condition.

In the portable disk drive device 101 described above, the vibration absorbing portion 103a is the shock absorbing portion 103.
It is assumed that the portable disk drive device 101 is made of a member different from that of b, and thus the portable disk drive device 101 has two types of absorbing members, so that it has vibration resistance and impact resistance. Figure 2A
Of the two types of absorbing members (vibration absorbing portion 103a and shock absorbing portion 103 of the portable disk drive device 101 shown in FIG.
In the member (b), the vibration absorbing portions 103a are arranged so as to correspond to the eight vertices of the HDD main body 102 and the case 111, which are rectangular parallelepiped, and the shock absorbing portions 103b are arranged at the other portions. 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 is arranged so as to contact most of the left and right side surfaces of the HDD body 102 and the case 111, and the shock absorbing portion 2
You may arrange 03b so that it may contact another part. Alternatively, as shown in FIG. 2C, the vibration absorber 253a may be set to H
The DD main body 102 and the case 111 may be arranged so as to be in contact with the vicinity of the center of the long side, and the shock absorbing portion 253b may be arranged so as to be in contact with other portions.

As shown in FIGS. 2A to 2C, the vibration absorbing portion is arranged so as to sandwich a part of the HDD main body 102, and the shock absorbing portion is arranged so as to cover most of the rest of the HDD main body 102. As a result, the vibration absorber supports the HDD body 102 with relatively high rigidity, and deteriorates the performance of the HDD body 102 under vibration conditions.
It is possible to suppress the occurrence of oscillating motion in the disk surface and to secure the impact resistance performance by the impact absorbing portion 103b mainly acting at the time of a drop impact.

However, in this embodiment, the vibration absorbing portion is H
The shock absorber is not limited to be arranged so as to sandwich a part of the DD main body 102, and to cover most of the rest of the HDD main body 102. Each of the vibration absorber and the shock absorber is not limited to this. However, it may be arranged so as to be in contact with a part of the disk drive body 102. Alternatively, when the disk drive body 102 has a rectangular parallelepiped shape having six surfaces, each of the vibration absorbing portion and the shock absorbing portion is at least one of the disk drive body 102.
It may be arranged so as to contact one surface.

As shown in FIGS. 2A and 2B, each of the vibration absorbing portion and the shock absorbing portion is arranged near at least one apex of the HDD main body 102 having a rectangular parallelepiped shape or near at least one ridgeline. By doing so, the efficiency of vibration absorption of the vibration absorber and shock absorption of the shock absorber is improved.

Further, as shown in FIG. 2B, each of the vibration absorbing portion and the shock absorbing portion has a rectangular parallelepiped HD shape.
By arranging the D main body 102 on at least one pair of surfaces that face each other in parallel, the efficiency of the vibration absorption of the vibration absorption unit and the efficiency of the shock absorption of the shock absorption unit are improved. Alternatively, each of the vibration absorbing portion and the shock absorbing portion has a rectangular parallelepiped HDD.
By arranging in the vicinity of at least one pair of ridge lines that face each other in parallel to the main body 102, similarly, the efficiency of the vibration absorption of the vibration absorber and the impact absorption of the impact absorber are improved.

In the first embodiment described above, it has been assumed that the vibration absorbing member is different from the shock absorbing member. However, the present invention is not limited to the case where the member of the vibration absorber is different from the member of the shock absorber. An embodiment in which the member of the vibration absorber is the same as the member of the shock absorber will be described below as a modified example of the first embodiment.

FIG. 3A is a schematic perspective view of a portable disk drive device 301 according to the modification of the first embodiment. In FIG. 3A, a portable disk drive device 30
1 is shown in a rectangular parallelepiped shape. In FIG. 3A, from the spatial center O of the portable disk drive device 301,
The X axis, the Y axis, and the Z axis are shown in parallel with the ridgeline of the rectangular parallelepiped shape.

FIG. 3B shows a portable disk drive device 3
The cross-sectional view of the XY plane of 01 is shown. FIG. 3C shows a cross-sectional view of the portable disk drive device 301 in the XZ plane. FIG. 3D shows a cross-sectional view of the portable disk drive device 301 in the YZ plane. FIG. 3E is a 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. 3F is a cross-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 different from that 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 as the portable disk drive device 101 shown in FIG.

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

Therefore, the protrusion 317 of the case 311 is
When arranging the vibration absorbing portion 303a so as to contact the
The shock absorber 30 in the portable disk drive device 301
The vibration absorbing portion 303a made of the same member as 3b has a protrusion 3
By being compressed by 17, the vibration absorbing portion 303a has an effect of pressing and holding the HDD body 302 by the compressed reaction force, and absorbs vibration applied to the HDD body 302.
Exerts a suppressing effect. Therefore, the vibration absorber 303
a is H when the portable disk drive device 301 vibrates.
By ensuring the regulation power for the DD body 302,
The same effect as that of the first embodiment described above can be obtained.

FIG. 4A is an enlarged view of the vicinity of the protrusion 317 of FIG. 3B. As shown in FIG. 4A, the recess 37 is formed in the vibration absorbing portion 303a corresponding to the vicinity of the top of the case 311.
0 is provided. By engaging the concave portion 370 with the protrusion 317 of the case 311, the portion corresponding to the dimension A near the apex of the vibration absorbing portion 303a becomes the dimension B of the case 311.
Is compressed to. In this way, 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 function as a pseudo high hardness absorbing member.

In FIG. 4A, the protrusion 317 of the case 311 is used.
The function of the member of the vibration absorbing portion 303a was changed by engaging the concave portion provided in advance with the vibration absorbing portion 303a,
The present invention is not limited to this. Vibration absorber 3
It is not necessary to previously provide a recess in 03a.

FIG. 4B is 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 does not necessarily need to be provided with the concave portion. Further, the shape of the protrusion is not limited to the circular shape shown in FIG. 4B, and may be a rectangular shape.

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

Alternatively, neither the case nor the HDD main body is provided with a protrusion, and the thickness of the portion of the absorbing portion requiring high hardness is made thicker than the other portions, so that the absorbing portion is made into a case. When placed between the HDD and the HDD main body, the thicker part of the absorber that is thicker than the other part is compressed more than the other part, and it can also function as a vibration absorber with a pseudo high hardness. Is.

Alternatively, in order to improve the anti-vibration performance, in addition to ensuring the regulation force for the HDD main body described above, the rectangular side of the HDD main body parallel to the disk-shaped recording medium is measured in the long side direction and the short side direction. You may arrange | position an absorption part so that a resonant frequency may 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 is in the long side direction of the rectangular surface of the HDD main body. It is a graph which shows that a resonance frequency is 162.1 Hz. From the graphs of FIGS. 5A and 5B, the HDD
It can be seen that the resonance frequencies in the long side direction and the short side direction of the rectangular surface of the main body are separated by approximately 100 Hz or more. in this case,
With respect to the vibrations near the resonance frequency in the long-side direction and the short-side direction, it is possible to suppress the occurrence of swinging in the HDD disk surface due to an increase in the leakage component of the vibration outside the excitation direction. As a result, it is possible to further suppress the deterioration of the transfer rate of the HDD body. The above has been confirmed experimentally.

FIG. 6 is a portable disk drive device showing the characteristics of FIGS. 5A and 5B, that is, the resonance frequencies in the long side direction and the short side direction are 162.1 Hz and 28, respectively.
A portable disk drive device exhibiting a property of 9.2 Hz has a resonance frequency of 114 in the long side direction and 114 in the short side direction.
The results of evaluating OK / NG of the recording performance by setting a threshold value in the transfer rate of the HDD main body are shown for the performance improvement effect in comparison with the portable disk drive device of Hz and 146 Hz. As shown in the graph of FIG. 6, the performance deterioration due to the rocking of the HDD used in the present experiment was large.
Particularly remarkable performance improvement was observed around -40 Hz.

With such a configuration, for example, the thickness or area of the absorbing portion arranged in the long side direction of the HDD main body is
This can be easily realized by changing the thickness or area of the absorbing portion arranged in the short side direction of the D main body. For example, an absorbing portion that is thicker in the long side direction of the HDD main body than in the short side direction may be arranged in the gap between the case and the side surface of the HDD main body, which have the same size all around.

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

FIG. 7A shows the surface 711a of the portable disk drive device 701 according to this embodiment. Figure 7B
Is a portable disk drive device 7 according to the present embodiment.
01 surface 711b is shown. FIG. 7C shows the surface 711c of the portable disk drive device 701 according to this embodiment. FIG. 7D shows the surface 711d of the portable disk drive device 701 according to this embodiment. FIG. 7E is a side view 7 of the portable disk drive device 701 according to the present embodiment.
11e is shown. FIG. 7F shows the surface 711f of the portable disk drive device 701 according to this embodiment.

The portable disk drive device 701 is a disk drive body (not shown in FIGS. 7A to 7F).
And a case 711 that encloses the disk drive body. In the present embodiment, the case 711 contains the disc drive body in an arbitrary form. Case 7
11 may include the disk drive main body as described in the first embodiment.

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

Case 711 illustrated in FIGS. 7A-7F.
Has a rectangular parallelepiped shape, but in the present invention, the case 711 is
Note that is not limited to a rectangular parallelepiped shape.

In this specification, for convenience, the case 711 is used.
The outer surface 711a of the case 711 is called the upper surface, the outer surface 711b of the case 711 is called the lower surface, and the outer surface 7 of the case 711 is called
The outer surface 7 of the case 711 is referred to as a first side surface 11c.
The outer surface 7 of the case 711 is referred to as a second side surface.
The outer surface 7 of the case 711 is referred to as a third side surface.
11f is called the fourth side surface. The upper surface 711a is the lower surface 711.
the first side surface 711c faces the second side surface 711d.
And the third side surface 711e faces the fourth side surface 711f.

Hereinafter, a portable disk drive device 701
The case where the object receives a drop impact will be described from the viewpoint of the case shape. First, the relationship between the falling state of the portable disk drive device 701 and the acceleration received by the internal HDD 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 of the fall height becomes kinetic energy and collides. Usually, a portable disk drive device 70
No. 1 is dropped from the apex or ridge of the outer surface (that is, the case 711) of the portable disk drive device 701 to cause two drops, or bounces once after colliding with a horizontal surface or twice. There is a high probability of repeating collisions three times.

Thus, the portable disk drive device 7
When 01 drops or bounces twice, the kinetic energy of the portable disk drive device 701 is dispersed in a plurality of collisions, or due to bounce,
It is consumed stepwise by being converted into the kinetic energy of the portable disk drive device 701 again.
Therefore, in this case, each of the plurality of collisions reduces the energy applied to the internal HDD body and its absorbing portion, and the HDD body is not subjected to a large acceleration.

However, for example, the lower surface 711 of the portable disk drive device 701 lands on a horizontal surface in a state where the lower surface 711b is substantially parallel to the horizontal surface, and the center of gravity of the entire portable disk drive device 701 is in contact with the horizontal surface.
In the case of being located substantially in the center of b, the portable disk drive device 701 may be completely stationary on the ground plane, and almost all of the kinetic energy may be absorbed as the vibration energy of the internal HDD body and the vibration absorbing portion. In this case, the acceleration that the HDD body receives becomes maximum, and the probability that the HDD body will be 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 in which it may be stationary immediately after a drop collision, That is, when one of the cases 711 collides against a horizontal surface with one of the surfaces being horizontal,
It is effective to take a case shape that allows the portable disk drive device 701 to fall or bounce twice.

Next, a portable disk drive device 701
The behavior of the portable disk drive device 701 after the drop will be described for the case where each of the drops falls in a state where the respective surfaces are substantially parallel to the horizontal plane.

In the second embodiment, the portable disk drive device 701 drops and the upper surface 711a of the case 711 is dropped.
Alternatively, the case where the lower surface 711b collides with a horizontal surface in a substantially horizontal state will be focused on and described.

Upper surface 711a and lower surface 7 of case 711
11b are provided with ground portions (projections) 713 near the four apexes. The ground portion 713 includes a first ground portion 713a and a second ground portion 713b.

Upper surface 711a or lower surface 7 of case 711
When 11b is arranged on the horizontal plane, the portable disk drive device 701 is grounded on the horizontal plane at four points of the two first grounding portions 713a and the two second grounding portions 713b. The first grounding portion 713a is the first external connector 763a.
It is integrally formed of the same material as the case 711 on the (see FIG. 7E) side. The second ground portion 713b is formed of a material having a larger elastic constant than the first ground portion 713a, for example, hard rubber, on the side of the second external connector 763b (see FIGS. 7B and 7F). Alternatively, the natural frequency of the first grounding portion 713a is equal to that of the second grounding portion 713b.
Different from the natural frequency of.

First ground portion 713a and second ground portion 71
3b is the upper surface 711a or the lower surface 71 of the case 711.
It is provided so as to face the projection point of the center of gravity of the entire portable disk drive device 701 with respect to 1b.

The portable disk drive device 701 falls and the upper surface 711a or the lower surface 711b of the case 711 is dropped.
When the vehicle collides with a horizontal surface in a substantially horizontal state, the ground contact portion 713
4 points are grounded. After the collision, the ground contact portion 713 receives a reaction force from the horizontal surface. However, in the first ground contact portion 713a and the second ground contact portion 713b formed of different materials, the magnitude of the reaction force received by each ground contact portion and the reaction force 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
It is higher than the natural frequency of the second ground contact portion 713b, and reaches a peak of high reaction force in a shorter time. Therefore, the portable disk drive device 701 includes the second grounding portion 71.
3b is provided as a fulcrum, and the first ground portion 713
A moment acts such that the end portion where a is provided jumps up first.

Here, the portable disk drive device 70
In the case where the vibration absorbing portion 103a and the shock absorbing portion 103b described in the first embodiment are included in the inside, the vibration absorbing portion 103a and the shock absorbing portion 103b as described above.
Has a sufficiently lower natural frequency than each of the first ground portion 713a made of metal and the second ground portion 713b made of an elastic material, and has a peak reaction force when an impact is applied. Time to reach to Case 7
11 (for example, metal) and a material sufficiently long with respect to the elastic material of the second ground portion 713b are desirable.

After the collision, the portable disk drive device 7
The moment acting to bounce and rotate 01 is applied to the portable disk drive device 701 by the vibration absorbing portion 103a and the shock absorbing portion 103b being compressed by the portable disk drive device 701 and pressing the case 711. It occurs at a stage that is sufficiently early before the force to hold down the reaction force at the time of impact reaches a peak. As a result, the portable disk drive device 701 bounces and rotates after a collision, and stops after repeating a plurality of collisions.

Here, the first upper surface 711a and the lower surface 711b of the case 711 are made of different materials.
Although the combination of the metal as the rigid material and the elastic material has been described for the ground contact portion 713a and the second ground contact portion 713b, it is also possible to use a hard resin as the rigid material. Alternatively, in order to obtain the effect that the magnitude of the reaction force and the time to reach the peak of the reaction force are different in the first grounding portion 713a and the second grounding portion 713b formed of different materials, high repulsion is achieved. It is also possible to use a combination of a flexible elastic material and a low-rebound elastic material.

Further, the second grounding portion 713b can also be constructed by attaching a tip end portion of a rigid material such as metal sandwiching the elastic material on the upper surface 711a side or the lower surface 711b side instead of the elastic material. According to this, due to the elasticity of the second grounding portion 713b, the portable disk drive device 701 bounces after a drop collision to disperse the energy applied to the HDD body and reduce the acceleration received by the HDD body. Since the tip of the ground portion 713b is made of a rigid material, the portable disk drive device 7
It is possible to prevent the feeling of insertion from being deteriorated due to the frictional resistance of the elastic material when 01 is inserted into the holder of another device.

Further, the material of the first grounding portion 713a is set to the second
The grounding portion 713b may be made of the same elastic material as that of the grounding portion 713b, and may be formed in different shapes. For example, the first grounding portion 713a and the second grounding portion 713b have a cylindrical shape of the same height, and the grounding area of the second grounding portion 713b is three times larger than that of the first grounding portion 713a. As a result, the second ground portion 71 with respect to the first ground portion 713a.
The elastic modulus of 3b is approximately tripled. Therefore, at the time of the drop impact of the portable disk drive device 701, different reaction forces are generated between the first grounding portion 713a and the second grounding portion 713b, so that a moment for rotating the portable disk drive device 701 is generated. The portable disk drive device 701 can bounce and disperse the energy received by the HDD body, and reduce the acceleration applied to the HDD body. Alternatively, the first made of the same material
Even if the heights of the ground portion 713a and the second ground portion 713b are different, the dropped portable disk drive device 701 falls or bounces twice.

7A to 7F, the upper surface 711a is used.
Alternatively, the portable disk drive device 701 having two first ground portions 713a and two second ground portions 713b on the lower surface 711b is shown, but the present invention is not limited to this. As shown in FIGS. 8A to 8F, the number of first grounding portions 813a and second grounding portions 813b provided on the upper surface 811a or the lower surface 811b may be one. First grounding portion 813a and second grounding portion 81
3b is provided so as to face the projection point of the center of gravity of the entire portable disk drive device 801 on the upper surface 811a or the lower surface 811b.

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

(Third Embodiment) In the second embodiment, when the portable disk drive device 701 is dropped, a first grounding portion which is grounded to the horizontal surface of the surface of the case 711 of the portable disk drive device 701, The mode in which the portable disk drive device 701 is dropped twice due to the difference in the second ground portion has been described.

In the third embodiment, the outer surface of the case 711 grounded to the horizontal surface and the portable disk drive device 70.
From the relationship with the center of gravity of 1, the portable disk drive device 7
A mode in which 01 is dropped twice will be described.

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

First, the first side surface 711c of the case 711.
The shape of the second side surface 711d will be described.
Since the first side surface 711c and the second side surface 711d of the case 711 are completely symmetrical, the first side surface 711
Only the shape of c 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 surface shown.

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

As described above, the first side surface 7 of the case 711 is
11c or the second side surface 711d collides in a state parallel to the horizontal plane, the projection point of the center of gravity of the entire portable disk drive device 701 on the horizontal plane is the first side surface 711.
The convex portion 714 is arranged so as to be located only on one side of c. Alternatively, the convex portions 714 may be distributed and arranged near one straight line on the first side surface 711c that passes through the projection point of the center of gravity of the entire portable disk drive device 701 with respect to the horizontal plane.

Further, as shown in FIGS. 7A to 7F, the convex portion 714 is continuously formed substantially parallel to the ridgeline of the first side surface 711c. Is not limited to this, and the convex portion 714 is
It may be formed substantially parallel to the ridgeline of the first side surface 711c and intermittently.

Further, on the first side surface 711c, the protrusion 71
A guide groove 715 is provided in parallel with No. 4. Convex portion 71
The surface on one side of No. 4 and the wall surface of the guide groove 715 form a continuous plane. The guide groove 715 has a fourth side surface 711.
Although it penetrates to the end of f, it does not penetrate to the end of the third side surface 711e and ends in the first side surface 711c. The guide groove 715 can be used as a guide when inserting the portable disk drive device 701 into another device. The guide groove 7 is formed near the center of the guide groove 715.
Two square holes 15 are provided on the grip 716a and the grip 7
16b, a portable disk drive device 7
01 fixing in other equipment, changer grips or loader grips.

On the third side surface 711e of the case 711,
A first external connector 763a is provided. The ridge lines of the third side surface 711e and the upper surface 711a are largely cut out in a chamfered manner, 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. Power lamp 768 and access lamp 7
69 is provided. The power lamp 768 and the access lamp 769 have a lower surface 711b and a third side surface 711e.
It is provided near the ridgeline between the lower surface 711b and the third side surface 711e so that it can be confirmed from both directions. Where the third
When the side surface 711e is grounded parallel to the horizontal plane, the projection point of the center of gravity X of the entire portable disk drive device 701 is located outside the third side surface 711e.

The second external connector 763 of the case 711 is located near the ridgeline between the fourth side surface 711f and the lower surface 711b.
b is provided. The fourth side surface 711f is the upper surface 71.
1a (see FIG. 7A) and the first side surface 71
When viewed from 1c or the second side surface 711d (see FIG. 7C or FIG. 7D), both are configured to look like a curved surface. When viewed from the upper surface 711a, the fourth side surface 7
11f is a large arc shape having a convex center,
When viewed from the third side surface 711c, the fourth side surface 711f
It looks like a substantially arcuate shape with the R center on the upper surface 711a side from the middle of the thickness. Here, the fourth side surface 711f
Is substantially horizontal and is grounded on a horizontal plane, the projection point of the center of gravity X of the entire portable disk drive device 701 deviates 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 the horizontal surface while the first side surface 711c or the second side surface 711d of the case 711 is substantially horizontal, the convex portion 714 is grounded at the moment of collision. Here, the position of the convex portion 714 on the horizontal plane and the portable disk drive device 70
1. Since there is a constant distance between the center of gravity X of the entire body 1 and the projection point on the horizontal plane, a moment about the ground contact portion of the protrusion 714 acts on the portable disk drive device 701 after the collision, and the case Since the portable disk drive device 701 rotates in the direction in which the upper surface 711a of 711 contacts the horizontal plane, the portable disk drive device 701 is dropped twice. In addition, even when the ridgeline of the third side surface 711e and the convex portion 714 are simultaneously grounded on the horizontal plane and a stable surface is apparently formed by the grounding point, the center of gravity X of the entire portable disk drive device 701 with respect to the horizontal plane. Since the projection point is arranged so as not to be located between the ridgeline of the third side surface 711e and the convex portion 714, the portable disk drive device 70 after the collision.
A moment acting on the ridge line of the third side surface 711e as a spindle acts on 1 and similarly, a double drop occurs.

When the portable disk drive device 701 falls and collides with the horizontal surface while the third side surface 711e of the case 711 is substantially horizontal, the ridges of the third side surface 711e and the upper surface 711a are chamfered. Since the shape is largely cut out, 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, the portable disk drive device 70
1 is the projection point of the center of gravity X of the whole 1 on the horizontal plane.
Since it is located outside 1e, the portable disk drive device 701 has a third side surface 711e and an upper surface 71 after the collision.
The moment with the ridgeline with 1a as a spindle acts, and the upper surface 7
Two drops occur such that 11a collides with a horizontal plane.

When the portable disk drive device 701 falls and collides with the horizontal surface while the fourth side surface 711f of the case 711 is substantially horizontal, the case 71 is caused at the moment of collision.
Ground at one point on the R surface of 1. Here, since the portable disk drive device 701 and the horizontal surface are in point contact with each other, they are unstable, and the portable disk drive device 70 after the collision.
The situation in which 1 stands still on the spot cannot occur.

Further, the portable disk drive device 70
Since the curved surface shape of the fourth side surface 711f is configured such that the projection point of the center of gravity X of the whole 1 deviates from the vicinity of the ground contact point,
After the collision, the portable disk drive device 701 has a fourth
A moment with the ridgeline between the side surface 711f and the upper surface 711a as a pivot acts, and the upper surface 711a falls twice such that it collides with a horizontal plane.

As is clear from the above description, in the portable disc drive device 701 according to the second and third embodiments, the outer surface of the case 711 of the portable disc drive device 701 is attached to the portable disc drive device 701. Bounces or falls twice after being collided with a horizontal plane to disperse and reduce the energy consumed in each collision, and suppress the maximum acceleration value received by the internal HDD and absorber. Is possible.

Alternatively, at least one of the six surfaces forming 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 on a horizontal plane. When grounded in parallel with each other, the projection point of the center of gravity X of the entire portable disk drive device 701 is
A configuration in which it is located outside the inclined surface or in the vicinity of the boundary line between the inclined surface and the other surface is also possible. When the vehicle collides with the horizontal surface from the inclined surface, the same effect can be obtained by causing a double drop due to the moment acting after the collision.

(Embodiment 4) In Embodiment 2 and Embodiment 3, when the portable disk drive device 701 falls on a horizontal plane, the portable disk drive device 70
The construction of the outer surface of the case for dropping 1 twice has been described.

In the fourth embodiment, the structure of a portable disk drive device in which the position of the spatial center of the case is deviated more largely than the position of the center of gravity of the entire portable disk drive device will be described. With such a configuration of the portable disk drive device, only a specific part of the portable disk drive device can be made to collide with the horizontal surface when it is dropped.

The fourth embodiment of the present invention will be described below.

FIG. 9A shows a portable disk drive device 9
A schematic perspective view of 01 is shown. In FIG. 1A, the portable disk drive device 101 is shown in a rectangular parallelepiped shape. In FIG. 1A, a portable disk drive device 9
From the spatial center O of 01 parallel to the ridge of the rectangular parallelepiped,
The X, Y and Z axes are shown.

FIG. 9B shows a portable disk drive device 9
The cross-sectional view of the XY plane of 01 is shown. FIG. 9C shows a cross-sectional view of the portable disk drive device 901 in the XZ plane. FIG. 9D shows a cross-sectional view of the YZ plane of the portable disk drive device 901.

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

The portable disk drive device 901 includes a weight 918 disposed between the case 911 and the HDD body 902 in a space opposite to the space where the HDD connector 925 of the HDD 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 a cavity inside thereof. The center of gravity of the entire portable disk drive device 901 is largely biased on the side surface 911f on the HDD connector 925 side. Accordingly, while the portable disk drive device 901 falls, a 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,
The effect that the probability that the side surface 911f side of the case 911 in which the center of gravity is deviated and the horizontal surface collide is increased is obtained.

Here, it is desirable that the liquid 919 is 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 the liquid, and the weight 9 is not affected by the impact applied from the outside of the case 911.
It is also possible to use a fluid, granules or powder that can move in the internal space of 18.

The shock absorbing portion 903b is thicker on the six sides of the HDD body 902 on the side surface 911f side than in the first embodiment, and on the other five sides in comparison with the first embodiment. May be provided in a thinned 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 side to the horizontal surface, the absorption performance is improved and the portable disk drive device 901 falls from the other five surfaces. In that case, the absorption performance will decrease.

However, when the portable disc drive device 901 according to the present embodiment falls, the portable disc drive device 901 can collide with the horizontal surface from the side surface 911f because the center of gravity is deviated by the weight 918. The nature is high. 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 portable disk drive device 90 is also improved.
For the width of 1 and the length of thickness, the shock absorbing portion 903
By reducing the thickness of b, it is possible to reduce the external dimensions. Here, the height required to substantially complete the posture change during the drop depends on conditions such as the weight of the portable disk drive device 901 or the level of deviation of the center of gravity. The thickness of the absorbing member is set as the minimum thickness that satisfies the required absorbing performance at the height at which the posture change is completed.

As described above, the portion of the absorbing portion located near the position of the center of gravity (in this case, the shock absorbing portion 903).
Since b) absorbs the shock from the case to the disk drive main body more than other parts, the shock to the portable disk drive device 901 can be efficiently absorbed.

The behavior when the 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 becomes downward due to the gravity center of gravity of the entire portable disc drive device 901 falling.

First, a portable disk drive device 901
Is lower than the height at which the posture change is completed due to the drop, the portable disk drive device 901 collides with the horizontal plane on any of the six surfaces of the case 911, but the vibration absorption included in the portable disk drive device 901 is absorbed. Part 90
3a and the shock absorbing portion 903b have sufficient shock absorbing performance against a drop impact from this height on any surface, so that the HDD main body 902 is not damaged.

As is apparent 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 largely deviated from a specific surface and when dropped. By increasing the probability of colliding with the horizontal surface from that surface and focusing on the shock absorption performance on that surface side, the shock resistance performance of the portable disk drive device 901 is improved. Further, details will be described in a fifth embodiment below, but the portable disk drive device 901 includes a case 91.
1 is provided with a replaceable protector 933, and when a large shock is applied, the protector 933 is destroyed, so that the portable disk drive device 901 consumes a part of the energy added by the drop shock. The impact force applied to the internal HDD body 902 can be reduced.

(Fifth Embodiment) In the present embodiment,
For example, a portable disk drive device including a protector 1033 that reduces a drop impact on the portable disk drive device when the portable disk drive device falls on a horizontal surface will be described.

FIG. 10A shows a surface 1011a of a portable disk drive device 1001 according to this embodiment. FIG. 10B shows the surface 1011b of the portable disk drive device 1001 according to this embodiment. FIG. 10C shows the surface 1011c of the portable disk drive device 1001 according to this embodiment. FIG. 10D shows the surface 1011d of the portable disk drive device 1001 according to this embodiment. FIG. 10E shows the surface 1011e of the portable disk drive device 1001 according to this embodiment. Figure 10F
Is a portable disk drive device 1 according to the present embodiment.
The surface 1011f of 001 is shown.

In the portable disk drive device 1001 shown in FIGS. 10A to 10F, the protector 1033 is arranged so as to cover the surface 1011f, and the guide grooves 715 of the surfaces 711c and 711d, the grip 716b and the ground portion 713b are provided. Except for the omission, it has the same configuration as the portable disk drive device 701 described in the third embodiment.

Next, the structure of the protector 1033 will be described. The surface 1011f of the case 1011 in which the center of gravity is deviated
A protector 1033 that can be easily attached to and detached from the case 1011 is attached to the. Here, the protector 1033 is arranged near the surface 1011f so as to cover a part of the outer surface of the case 1011. Protector 10
33 may be formed of a thin hard resin. The protector 1033 may also be composed of an irreversible deformable member or a plastically deformable member. The protector 1033 is destroyed by itself when a large impact is applied, so that the portable disk drive device 1001
It has the function of absorbing energy added to.

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

Here, the portable disk drive device 10
It is assumed that 01 includes the weight 918 (see FIG. 9B) having the liquid 919 described in the fourth embodiment therein.

9A to 9C and 10A to 10F.
As will be understood with reference to, it is desirable to provide the 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 surface from the protector 1033 with the side surface 1011f facing downward. . At this time, the shock input from the protector 1033 is transmitted to the case 1011 almost as it is. Part of the energy of the collision transmitted to the case 1011 is also transmitted to the weight 918, but the weight 918 contains the liquid 91 inside.
9 is enclosed leaving a movable space, a part of the input energy is consumed as the kinetic energy of the liquid 919, and the rest is transmitted to the vibration absorber 1003a, the shock absorber 1003b, and the HDD body 102.

Here, the shock absorbing portion 1 on the side surface 1011f side
The thickness of 003b is set to be thicker than that of the other surface to improve the absorption performance, and also has the sufficient absorption performance together with the energy damping effect of the liquid 919 inside the weight 918, which may damage the HDD main body. I will not receive it.

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,
This consumes some of the energy at the time of the collision.
Further, thereafter, the energy transmitted to the case 1011 is further consumed as kinetic energy of the liquid 919 inside the weight 918, and the remaining energy is the remaining energy.
It is transmitted to the HDD main body via 03a and the shock absorber 1003b. As a result, the impact force is reduced by the double damping effect of the protector 1033 destruction and the internal damping of the weight 918, and damage to the HDD body can be avoided.

Here, the example in which the resin material is used as the material of the protector 1033 has been described. However, when the protector 1033 is formed by using a thin metal, the protector 1033 plastically deforms at the time of a large drop impact to absorb energy. Even if it does, the same effect can be obtained.

The weight 918 and the protector 1033 are also included.
Is preferably provided on the opposite side of the external connector 1063a. This reduces the probability of collision with the horizontal surface from the side of the external connector 1063a, thereby preventing the external connector 1063a from being deformed by a drop impact.

(Embodiment 6) In this embodiment, FIG.
A-Portable disk drive device 101 shown in FIGS.
The circuit configuration of will be described.

FIG. 11 shows a portable disk drive device 1
It is a schematic diagram of the circuit configuration of 01. The portable disk drive device 101 includes a substrate 106 (see FIGS. 1B to 1D).
Is fixed. A signal conversion circuit 1160 that functions as a signal conversion unit, a control circuit 1161 that functions as a signal control unit, and a semiconductor memory 1162 as a storage unit are mounted on the substrate 106. HDD body 102
A flexible cable 105 (see FIG. 1C) is connected between the substrate 106 and the HDD connector 1125 in order to input and output the signals and the power source.

The signal conversion circuit 1160 is used for the HDD main unit 10.
ATA signal, which is a general-purpose interface of 2,
A USB (Universal Serial) generally used for connecting an external device of a personal computer.
Bus signal and mutual conversion are performed.

The semiconductor memory 1162 is equivalent to the HDD main unit 10.
2 and a video recorder 1107 function as a buffer memory when transmitting a signal between them, and an address storage area 1162a for storing address management information on the HDD body 102 and a still image recorded in the HDD body 102. Alternatively, an image data storage area 1162b that stores a representative image of image data such as a moving image as a still image, and a remaining capacity storage area 11 that stores the remaining capacity of the recording area of the HDD body 102.
62c and.

The control circuit 1161 is provided in the semiconductor memory 1162 for controlling signal transmission between the HDD main body 102, the semiconductor memory 1162, and the video recorder 1107 in response to a request from an external device such as the HDD main body 102 or the video recorder 1107. Address storage area 1162a and image data storage area 11 related to the HDD main body 102
Information management of 62b and the remaining amount storage area 1162c is performed.

Normally, the 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 of MPEG2 or the like 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 MPE having a low transfer rate of the video signal of MPEG2 or the like.
It is desirable that the signal is converted into a G1 or a still image at a fixed time interval by the signal conversion circuit 1160 and recorded in the semiconductor memory 1162.

Further, without using the semiconductor memory 1162, it is also possible to mix and record input signals such as moving images and still images of various signal systems and transfer rates in the HDD main body 102. At this time, depending on the high-speed transfer rate of the HDD body 102, (1) simultaneous recording of moving images having the same transfer rate, (2) simultaneous recording of different moving images,
(3) A function of recording a still image at an arbitrary timing while continuing to record a moving image can be realized.

On the surface of the case 111, a remaining amount display unit 1165 for displaying the remaining amount of the recording capacity of the HDD main body 102 and a display of the remaining amount display unit 1165 are displayed on the liquid crystal panel.
A display button 1166 for turning off / on is provided. In addition, a battery 1167 that supplies power in association with the display button 1166 is included in the case 111. The battery 1167 is a secondary battery and is charged by the power supply to the portable disk drive device 101 when connected to an external device. Alternatively, a solar cell may be provided on the case 111 so that the battery is always charged when stored in a place exposed to light.

With the circuit configuration of FIG. 11, the display button 1
When 166 is pressed and turned on, power from the battery 1167 is supplied to the control circuit 1161, the semiconductor memory 1162, and the remaining amount display portion 1165, and the control circuit 1161 causes the remaining amount storage area 1162c of the semiconductor memory 1162 to drive the HDD main body. The remaining amount information of the recording area of 102 is read out 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, after the display button 1166 is pressed once, the remaining amount display portion 1165 is displayed for a fixed time, and then the power supply from the battery 1167 is stopped. The remaining amount display unit 1165 may display pictograms, and the remaining amount display unit 1165 may include a plurality of LEDs.

In this way, unlike the conventional tape cassette, the remaining capacity of the recording capacity could not be confirmed from the external appearance, so that it is possible to confirm the remaining capacity without connecting to another device when necessary. Becomes

The outer shape of the case 111 of the portable disk drive device 101 may be the same as that of the portable disk drive device 701 described with reference to FIGS. 7A to 7F. A first external connector 1163a based on the USB interface standard is mounted on the substrate 106 so as to be connected to the control circuit 1161 in order to input / output a signal to / from an external device. The end of the first external connector 1163a is a portable disk drive device 10
On the same side as the HDD connector 1125 on the side of No. 1, it is exposed to the outside through the opening of the side.

FIG. 7E shows the first external connector 763a.
Is shown exposed to the outside from the opening of the surface 711e on the same side as the HDD connector on the side surface of the portable disk drive device 701.

Here, the remaining amount display unit 1165 serves as the remaining amount display unit 765 in the portable disk drive device 701 shown in FIG. 7B, and the remaining amount display unit 1 in the portable disk drive device 1001 shown in FIG. 10B.
It is shown as 065.

The display button 1166 is used as the display button 766 in the portable disk drive device 701 shown in FIG. 7B and as the display button 10 in the portable disk drive device 1001 shown in FIG. 10B.
It is shown as 66.

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

The second external connector 1163b is shown in FIG. 7B.
And a portable disk drive device 7 shown in FIG. 7F.
01 as the second external connector 763b and the second external connector 106 in the portable disk drive device 1001 shown in FIGS. 10B and 10F.
Shown as 3b.

Referring again to FIG. 11, the signal conversion circuit 1
160 is not defined in the above-mentioned ATA and USB signal conversion, but ATA is set to USB2 or IEEE1.
A configuration of converting into a signal of 394 or the like is also possible. further,
It may be possible to provide a function of converting into a plurality of signals. In this case, the connector systems of the first external connector 1163a and the second external connector 1163b are respectively USB.
2 (for personal computers) and IEEE 1394
It is also possible to expand the applications of the portable disk drive device 101 by mounting a signal interface having a high device mounting rate in each product field, such as (for AV device).

The control circuit 1161 receives a signal received by the first external connector 1163a or the second external connector 763b from the HDD body 102 and the semiconductor memory 1162.
May be recorded in the HDD main unit 102 and the semiconductor memory 11 and signals of different types received by the first external connector 1163a or the second external connector 763b may be recorded.
62 may be recorded. Alternatively, the control circuit 1161
May convert the signal received by the first external connector 1163a or the second external connector 763b into a signal of a different system by the signal conversion circuit 1166, and may record in the HDD main body 102 and the semiconductor memory 1162. The signal received by the external connector 1163a or the second external connector 763b of the HDD is converted into a signal of a different system, and the HDD body 102 and the semiconductor memory 1
The signals of different systems may be recorded in 162.

The basic operation when the portable disk drive device 101 is connected to another device will be described below with reference to FIG. 11 when it is connected to the video recorder 1107.

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 causes the erroneous erasure prevention switch 1164.
Then, the setting of the erroneous erasure prevention mode of the portable disk drive device 101 is confirmed.

If the start prohibition mode is set, the control circuit 1161 informs the video recorder 1107 that the start is impossible and stops the subsequent processing. As a result, when very important data is recorded in the HDD body 102, the head that has been started up from the HDD body 102 and saved to the outside of the disk moves to the magnetic disk, and thus the disk becomes dramatically larger. 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 capacity storage area 1162c, etc. on the semiconductor memory 1162, and the acquired information is stored in the video recorder 1107. Forward. Then HD
The D main body 102 is activated, and the HDD main body 102 is shifted to a write / read standby state.

As described above, by calling the information regarding the recorded contents of the HDD main body 102 from the semiconductor memory 1162 before the HDD main body 102 is activated, the contents of the portable disk drive device 101 can be grasped in a shorter time. Becomes

Next, in the case of recording or reproducing information on the HDD main body 102, the control circuit 1161 of the portable disk drive device 101 is executed while the data is read from or written to the HDD main body 102 by the command from the video recorder 1107. Reads the address management information on the HDD body 102 at a predetermined timing and saves it in the address storage area 1162a on the semiconductor memory 1162. As a result, even when the address management area on the HDD body 102 is damaged and the data on the disk cannot be read, the data can be restored 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 this embodiment, the semiconductor memory 1162 mounted on the portable disk drive device 101 stores typical information about the HDD main body 102. The contents recorded in the HDD main body 102 can be grasped in a short time and recorded in the HDD main body 102 by reading the data independently of the HDD main body 102 or by making mutual data reference possible. Can improve the security of data.

In the above description, the semiconductor memory 11
Although the method of fixing 62 to the substrate 106 has been described, the semiconductor memory 1162 is provided with a memory slot (not shown) that detachably holds the semiconductor memory 1162 while being connected to the substrate 106. It is conceivable that the device 101 can be replaced. In this case, the case 111 has an opening, and the semiconductor memory can be replaced through the opening. According to this, even if it becomes necessary to expand the capacity of the semiconductor memory 1162 as a buffer memory for signal input / output or a management information storage means of the HDD main body 102, the user can easily replace it, which is convenient. 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, a portable disk drive device 701
Are assumed to have the circuit configuration shown in FIG.

As shown in FIG. 7B, the lower surface 711b of the case 711 of the portable disk drive device 701 is also used.
Is provided with a second external connector 763b. Second
The external connector 763b of the control circuit 1161 (see FIG.
However, unlike the standard connector of the standard in terms of shape, the electrical contact is exposed on the lower surface 711b side and the lower surface 711 is connected.
It is configured by arranging the electrical contacts along the ridgeline of b and the fourth side surface 711f, and is 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 near the ridge of the surface (711f) that faces the surface (711e) on which the first external connector 763a is disposed. There is. The electric contacts are gold-plated with a sufficient thickness, and ensure sufficient durability even when the number of times of attachment and detachment to the device is large compared to the first external connector 763a. Second external connector 7
In 63b, a partition is provided between adjacent electric contacts.

Having two connectors in this way makes it possible to select a connection method suitable for the conditions (universality, durability, cable availability, etc.) required when using each PC or AV device. To do. Furthermore, by arranging both connectors separately on both ends of the portable disk drive device 701, even when the connector is inserted and fixed in one device, the other connector is used to drive the HDD.
The data of the main body can be read. For example, when information cannot be retrieved from the portable disk drive device 701 due to a failure of a device connected by the second external connector 763b, the first external connector 763a is connected to the USB.
Read the data by connecting the cable, or
It becomes possible to copy the recorded data from the device in the recording operation to another device.

Here, the erroneous erasure prevention configuration will be described. Fourth side surface 71 near the second external connector 763b
1f is provided with an erroneous erasure prevention lever 712 that switches between three types of setting modes: write permission, write inhibition (reading possible), and start inhibition to the HDD body (see FIG. 7F). The erasure prevention lever 712 is provided on the substrate 106 (see FIG.
(See FIG. 11) and is linked to an erroneous erasing switch 1164 (see FIG. 11) for electrically switching between three types of modes, and the control circuit 1161 also recognizes the setting mode of the erroneous erasing prevention lever 12. It is possible. Here, the control circuit 1161 confirms the setting of the erroneous erasure switch 1164 in the process before the HDD body 102 is activated after the portable disk drive device 101 is supplied with power, and the erroneous erasure prevention lever 712 supports the setting. HDD main unit 10 in the selected mode
2 is started or the start operation is stopped.

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

The eighth embodiment of the present invention will be described below.

FIG. 12 shows a portable disk drive device 1
A video recorder 1208 including 01 is shown. The video recorder 1208 has a holder 1281 for supporting the portable disk drive device 101, a main connector is installed in the holder 1281, and the HDD recorder 102 is engaged with an external connector of the portable disk drive device 101.
It enables recording and reproduction of video information inside. The video recorder 1208 is configured to prevent vibration of the portable disk drive device 101.

Further, dampers 1285 are attached to the holder 1281 at four positions via damper support plates 1282, and the dampers 1285 are fixed to the frame 1284 of the video camera 1208.
Are supported by the frame 1284 in a floating manner in a viscoelastic manner.

Further, a weight 1286 is movably attached to the holder, and by adjusting the position of the weight 1286, a portion that is floatingly supported by the damper 1285 and the cable, that is, the holder 1281 and the entire portable disk drive device 101. The position of the center of gravity can be finely adjusted.

Here, the characteristic of the damper 1285 is that the resonance frequency in the long side direction, the short side direction and the thickness direction of the absorbing portion of the portable disk drive device 101 before being mounted in the holder 1281 is 180 to 180. 290 Hz
On the other hand, the resonant frequencies in the long side direction, the short side direction, and the thickness direction of the disk drive body of the portable disk drive device 101 mounted in the holder 1281 are set to about 80 Hz. In this way, the portable disk drive device 101 is attached to the holder 1
By attaching to the 281, three directions (long side direction,
The resonance frequency of the portable disk drive device 101 in the short side direction and the thickness direction) is 100 Hz or lower. Under this condition, the resonance characteristics (overall / all characteristics) of the HDD main body 102 with the video recorder 1208 as a reference.
Is measured, the result as shown in FIG. 13 is obtained. FIG.
FIG. 4 is a graph showing a resonance frequency of a video recorder including the portable disc drive device according to the present embodiment.
Here, in the graph of FIG. 13, the characteristics of the disk drive device absorption member are as follows:
Shows the resonance frequency before attaching to the holder 1281,
The damper characteristic indicates the resonance frequency of the damper itself, and the overall characteristic indicates the portable disk drive device 10.
The resonance frequency after mounting No. 1 on the holder 1281 is shown. As shown in FIG. 13, when the difference between the resonance frequencies in the respective directions is 100 Hz or more, resonance (resonance magnification 18 dB) due to the absorbing member of the absorbing unit 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 and the resonance of the absorbing portion are overlapped and the resonance is not amplified.

In the compact video recorder 1208, the center of gravity of the entire portable disk drive device 101 and the holder 1281 in a plane substantially parallel to the disk-shaped recording medium (not shown in FIG. 12) installed in the HDD body. On the other hand, the weight of the weight 1 is adjusted so that the total moment applied by the elasticity of the damper 1285 and the cable is substantially zero.
It is desirable to adjust the position of 286. Weight 1286
Is configured such that a mounting screw fixing hole of the damper 1285 to the frame portion 1284 is a long hole.

As a result, a damper 1285 and a cable 1287 are provided against the disturbance oscillating motion in the plane of the disk-shaped recording medium which causes a remarkable decrease in recording / reproducing performance particularly in the HDD.
The moment that acts around the center of gravity of the part that is floatingly supported due to the unevenness of external force received from the machine is eliminated by adjustment during assembly, and it is possible to prevent the swing motion from being induced by the disturbance translational motion and to actually use the device. It is possible to reduce the frequency of occurrence of recording / reproducing performance deterioration under the conditions.

FIG. 14 shows a portable disk drive device 1
A video recorder 1408 including 01 is shown. As shown in FIG. 14, the video recorder 1408 includes a damper 1485 and a coil spring 1488 as a vibration isolation means,
A disc-shaped recording medium installed in the D main body 102 (see FIG.
Coil spring 14 in a plane substantially parallel to
88 arrangement of the damper 1485 and the coil spring 14
It is desirable that the axis of the coil spring 1488 and the straight line passing through the center of gravity X of the portable disk drive device 101 and the holder 1481 supported by 88 be aligned.

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 for generating a moment around the center of gravity. Therefore, even if a load variation occurs due to a manufacturing or assembling problem of the coil spring 1488, it is unlikely to cause the swing around the center of gravity X, and the H due to the swing motion is further increased.
It is possible to realize the video recorder 1408 in which the recording / reproducing performance of the DD main body does not easily occur.

As described above, the video recorder 120 equipped with the portable disk drive device 101 of this embodiment.
In No. 8, the resonance frequency of the damper 1285 is set to be 100 Hz or more away from the resonance frequency of the absorber so that the high resonance magnification of the absorber is obtained due to the vibration damping effect in the high frequency range obtained by the damper 1285. It is possible to sufficiently suppress the vibration amplification due to and prevent the data transfer rate of the HDD main body from deteriorating.

Further, with respect to the disturbance oscillating motion in the surface of the disk-shaped recording medium which causes a remarkable deterioration of the recording / reproducing performance in the HDD, the center of gravity of the portion which is floatingly supported due to the uneven external force received from the damper 1285 and the cable. The moment that acts on is eliminated by adjustment during assembly,
A stable recording / reproducing operation can be performed by suppressing the rocking motion induced 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 means for obtaining the same effect,
The mounting position of the damper 1285 may be adjustable.

(Ninth Embodiment) The ninth embodiment 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 such that the portable disk drive device 101 including the HDD main body 102 can be attached and detached, and the image capturing unit 1591 used for capturing an image and the image input from the image capturing unit 1591 are continuously displayed. Motion vector detecting means 1592 for performing dynamic processing to detect a motion vector of an image caused by the motion of the image capturing means 1591, and a motion vector detecting means 1592.
It is determined from the absolute value level of the motion vector obtained from the above and its duration that the main body of the video camera 1508 may be in a falling state, the recording / reproducing operation by the head is stopped, and the head is saved to the outside of the disc. An image from the head retracting control means 1593 that determines that the absolute value of the motion vector has decreased and returns the head to the disk to restart the recording / reproducing operation, and the image capturing means 1591 during the head retracting by the head retracting control means 1593. And an image storage unit 1594 for temporarily storing the input signal and the image output signal read from the HDD main body 102.

The operation when the video camera 1508 according to the present embodiment falls from a hand and receives a drop impact during a shooting operation will be described below.

During shooting, the motion vector detecting means 1592 of the video camera 1508 processes the data from the image pickup means 1591 in units of one frame and monitors the movement of the subject in a specific area on the screen. Video camera 1
When the video camera 1508 is dropped by mistake, the video camera 1508 starts free fall, but the motion vector in this state is recognized as an abnormal value that is significantly larger than that during normal shooting. The head retracting control unit 1593 determines that the video camera 1508 is likely to have dropped from the occurrence of this abnormal value and its duration, and the HDD main body 10
2 sends a command to interrupt the recording operation and retracts the head to an area outside the disk. Since these operations are performed instantly after detecting the possibility of dropping, the video camera 1508 generally collides with the horizontal surface after the head retracting of the HDD body 102 is completed.

The impact resistance performance of the HDD body 102 is different when the head is on the disk when it is in operation and when the head is retracted to the outer periphery when it is not in operation. There is a big difference of 800 G. Therefore, if the head is retracted from the disk before a collision occurs when the recording / playback is dropped, the HDD main body 102 including the already-recorded data can be saved from damage. You can dramatically improve your sex.

Even if the motion vector detecting means 1592 detects an abnormal value, if the photographer performs a pan operation at a very fast speed, or if the photographer hits something during photographing, the video camera 1508 moves greatly. In some cases, such as when it has fallen, a situation in which no fall has actually occurred. In such a case, the head retracting control unit 1593 temporarily retracts the head to the outside of the disk, and at the same time stores the input data from the image capturing unit 1591 in the image storing unit 1594, and the motion vector detecting unit 1592 receives the data within a certain time. After confirming that the output has returned to the normal level, the HDD main unit 10
It is assumed that the recording operation is restarted in No. 2 and the data stored in the image storage unit 1594 is written in the HDD main body 102. Therefore, even when the motion vector detecting means 1592 temporarily shows an abnormal value for a reason other than the occurrence of the drop, it is possible to continue shooting without losing recorded data before and after the abnormal value detection.

As described above, the video camera 1508 equipped with the portable disk drive device 101 of this embodiment is mounted.
Then, even if the video camera 1508 is dropped accidentally, the possibility of the drop is detected from the motion vector between the frames of the captured image, and the head of the HDD main body 102 is retracted to the outside of the disk to cause a horizontal plane. To collide with
It is possible to reduce the risk that the HDD body 102 is damaged and the already recorded data cannot be read. The possibility of falling is detected from the motion vector between the frames of the captured image, and the head of the HDD main body 102 is collided with the horizontal plane while retracted outside the disk.
It is possible to reduce the risk that the data 2 is damaged and the already recorded data cannot be read.

Further, the method of detecting the abnormality of the disk drive body by the motion vector of the image being photographed as in the present embodiment is applied to the disk drive recording operation by the gyro effect when the angular velocity is applied to the video camera by the pan operation or the like. It is also effective when detecting an abnormal occurrence.

[0266]

As described above, according to the portable disk drive device according to the present invention, the absorbent portion made of two kinds having different hardness is arranged between the disk drive body and the case, or the absorbent portion is provided. By partially compressing the disk, a regulation force for the disk drive is ensured at the time of vibration of several G, and the fluctuation of the disk-shaped recording medium in the disk surface is suppressed to suppress the deterioration of the transfer rate. G
The low-hardness absorbing member having a high shock absorbing effect mainly acts at the time of moderate impact to ensure excellent shock resistance, and it is possible to have both vibration resistance and shock resistance.

Also, by devising the shape of the case of the portable disk drive device, the energy consumed at each collision is dispersed / reduced by causing a bounce or double drops after collision with a horizontal surface, or by specifying By arranging the absorbing means so as to drop from the surface of the disk drive and arranging the absorbing means mainly on the surface side, it is possible to reduce the acceleration received by the disk drive body at the time of a collision.

Further, in the information recording / reproducing apparatus using the portable disc drive device, the maximum value of the resonance frequency in the direction of the disc drive 3 in the portable disc drive device is 3 when the portable disc drive device is mounted. By setting the resonance frequency of the damper support system in each direction to be smaller than approximately 100 Hz or more, vibration amplification due to the high resonance magnification of the absorbing member can be sufficiently suppressed due to the vibration damping effect obtained by the damper support system, and it can also be absorbed. The portable disk drive device in which the resonance of the member and the resonance of the damper support system are overlapped and supported by the damper prevents occurrence of swinging in the disk surface. This makes it possible to avoid deterioration of the data transfer rate of the disk drive body, especially the disk-shaped recording medium. In addition, the disk surface of the disk-shaped recording medium is adjusted by assembling and adjusting the balancer (weight) whose position is variable so that the sum of the moments of the forces exerted by the damper and the cable with respect to the center of gravity of the damper support system becomes approximately zero. It is possible to suppress the occurrence of sway in the inside, thereby,
It is possible to realize stable recording and reproduction of the disk drive body.

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 a shot image, and the head of the disk drive body is moved to the disk. Since it collides with the horizontal surface in a state of being evacuated to the outside, it is possible to reduce a risk that the disc drive is damaged and the already recorded data cannot be read.

[Brief description of drawings]

FIG. 1A is a schematic perspective view of a portable disk drive device 101 according to a first embodiment of the present invention.

FIG. 1B is a cross-sectional view taken along the XY plane of the portable disk drive device shown in FIG. 1A.

FIG. 1C is a cross-sectional view taken along the XZ plane of the portable disk drive device shown in FIG. 1A.

FIG. 1D is a cross-sectional view taken along the YZ plane of the portable disk drive device shown in FIG. 1A.

FIG. 2A shows a portable disk drive device 10.
FIG. 3 is a perspective view showing the shapes of a vibration absorbing part and a shock absorbing part included in FIG.

FIG. 2B is a perspective view showing a shape in which the vibration absorbing portion is arranged so as to contact most of the side surfaces of the HDD body and the case, and the shock absorbing portion is arranged so as to contact other portions.

FIG. 2C is a perspective view showing a shape in which the vibration absorbing portion is arranged so as to be in contact with the HDD main body and the vicinity of the center of the long sides of the case, and the shock absorbing portion is arranged 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.

FIG. 3B is a cross-sectional view taken along the XY plane of the portable disk drive device shown in FIG. 3A.

FIG. 3C shows a cross-sectional view of the portable disk drive device of FIG. 3A in the XZ plane.

FIG. 3D is a cross-sectional view taken along the YZ plane of the portable disk drive device shown in FIG. 3A.

FIG. 3E is a view for explaining the arrangement of protrusions;
FIG. 3B is a sectional view of a plane parallel to the XZ plane of the portable disk drive device of FIG. 3A.

FIG. 3F is a view for explaining the arrangement of protrusions;
FIG. 3B is a sectional view of a plane parallel to the YZ plane of the portable disk drive device of FIG. 3A.

FIG. 4A is an enlarged view of the vicinity of the protrusion of FIG. 3B.

4B is 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 resonance frequencies in the long side direction and the short side direction of 114 Hz and 14 in the cases of FIGS. 5A and 5B, respectively.
The performance improvement effect compared with the case of 6 Hz is
Recording performance is OK by setting a threshold for the transfer rate of the main unit
The result of having evaluated / NG is shown.

FIG. 7A shows a surface 711a of a portable disk drive device 701 according to the second embodiment.

FIG. 7B shows a surface 711b of a 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 a portable disk drive device 701 according to the second embodiment.

FIG. 7E shows a surface 711e of a portable disk drive device 701 according to the second embodiment.

FIG. 7F shows a surface 711f of a 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 modified example of the second embodiment.

FIG. 9A shows a portable disk drive device 90.
1 shows a schematic perspective view of 1.

FIG. 9B shows a portable disk drive device 90.
1 shows a cross-sectional view of the XY plane of FIG.

FIG. 9C shows a portable disk drive device 90.
1 shows a sectional view of the XZ plane of FIG.

FIG. 9D shows a portable disk drive device 90.
1 shows a cross-sectional view of the YZ plane of FIG.

FIG. 10A shows a surface 1011a of a portable disk drive device 1001 according to a fifth embodiment.

FIG. 10B shows a surface 1011b of a portable disk drive device 1001 according to the fifth embodiment.

FIG. 10C shows a surface 1011c of a portable disk drive device 1001 according to the fifth embodiment.

FIG. 10D shows a surface 1011d of a portable disk drive device 1001 according to the fifth embodiment.

FIG. 10E shows a surface 1011e of a portable disk drive device 1001 according to the fifth embodiment.

FIG. 10F shows a surface 1011f of a portable disk drive device 1001 according to the fifth embodiment.

FIG. 11 shows a portable disk drive device 10.
It is a schematic diagram of the circuit configuration of 1.

FIG. 12 shows a portable disk drive device 10.
1 shows a video recorder 1208 including 1.

FIG. 13 is a graph showing a resonance frequency of a video recorder including a portable disk drive device 101 according to an eighth embodiment of the present invention.

FIG. 14 shows a portable disk drive device 10.
1 shows a video recorder 1408 including 1.

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]

101 Portable Disk Drive Device 111 cases 102 HDD body 103a Vibration absorber 103b shock absorber 106 substrate

Claims (75)

[Claims] 1. A disc drive main body having a disc-shaped recording medium, for recording information on the disc-shaped recording medium or reproducing information recorded on the disc-shaped recording medium, and the disc drive main body. An enclosing case, a vibration absorbing unit arranged between the disk drive main body and the case, for absorbing vibration from the case to the disk drive main body, and arranged between the disk drive main body and the case. A portable disk drive device comprising: shock absorbing means for absorbing a shock from the case to the disk drive body. 2. The disk drive body has a rectangular parallelepiped shape formed from six surfaces, and the vibration absorbing means is arranged so as to contact at least one of the six surfaces forming the disk drive body. The portable disk drive device according to claim 1, wherein the shock absorbing means is arranged so as to contact at least one of the six surfaces forming the disk drive body. 3. The disk drive body has a rectangular parallelepiped shape formed from six surfaces, and the vibration absorbing means is provided near at least one apex or at least one ridgeline of the rectangular parallelepiped shape of the disk drive body. The portable disk drive device according to claim 1, wherein the shock absorbing means is arranged near at least one apex or near at least one ridgeline of the rectangular parallelepiped shape of the disk drive body. 4. The portable disk drive device according to claim 1, wherein the vibration absorbing means is arranged so as to sandwich the disk drive body. 5. The disk drive body has a rectangular parallelepiped shape formed from six faces and having 12 sides, and the vibration absorbing means includes at least one set of the rectangular parallelepiped disk drive bodies facing each other in parallel. Face, or
The portable disk drive device according to claim 4, wherein the portable disk drive device is arranged in the vicinity of at least one set of ridge lines that face each other in parallel to each other and have a rectangular parallelepiped shape. 6. The portable disk drive device according to claim 5, wherein the vibration absorbing means is arranged in the vicinity of four sides perpendicular to the widest surface of the six surfaces of the disk drive body. 7. The portable disk drive device according to claim 1, wherein the vibration absorbing means and the shock absorbing means include a cushioning member. 8. 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. 9. 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. 10. The portable disk drive device according to claim 7, wherein the vibration absorbing means has a hardness higher than that of the shock absorbing means. 11. The portable disk drive device according to claim 1, wherein the vibration absorbing means is a member different from the shock absorbing means. 12. 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 obtained by compressing the vibration absorbing means. . 13. A disc drive main body having a disc-shaped recording medium, for recording information on the disc-shaped recording medium, or for reproducing information recorded on the disc-shaped recording medium, and the disc drive main body. A case may be provided, which is included and has a convex portion provided on the inner surface thereof, and an absorbing unit arranged between the disk drive body and the case so as to be partially compressed by the convex portion of the case. Portable disk drive device. 14. 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 engage with each other to compress the vicinity of the concave portion of the absorbing means. The recess of the absorbing means is arranged as
The portable disk drive device according to claim 13. 15. The disk drive body has a rectangular parallelepiped shape formed from six sides and has twelve sides, and four sides of the six sides of the disk drive body are perpendicular to the widest side. 14. The case is provided with a plurality of protrusions corresponding to the vicinity thereof, and the plurality of protrusions compresses an absorbing means between the plurality of protrusions and the disk drive body. Portable disk drive device. 16. A disc drive main body having a disc-shaped recording medium, for recording information on the disc-shaped recording medium or reproducing information recorded on the disc-shaped recording medium, and the disc drive main body. An enclosing case and an absorbing means arranged between the disc drive main body and the case are provided, and the disc drive main body has one plane parallel to the disc-shaped recording medium, and the plane is rectangular. The shape,
The absolute value of the difference between the mechanical resonance frequency between the absorbing means and the disk drive body in the long side direction of the plane and the mechanical resonance frequency between the absorbing means and the disk drive body in the short side direction of the plane. Is a portable disk drive device having a frequency of 100 Hz or higher. 17. A disc drive main body having a disc-shaped recording medium for recording information on the disc-shaped recording medium or reproducing information recorded on the disc-shaped recording medium, and the disc drive main body. And a first grounding part which is grounded on the horizontal surface when the case is arranged on a horizontal plane, and a first grounding part which is different from the first grounding part. A portable disk drive device provided with two ground parts. 18. The first grounding portion and the second grounding portion are provided so as to face a projection point of the center of gravity of the entire portable disk drive device with respect to the first surface of the case. Item 18. A portable disk drive device according to item 17. 19. The apparatus further comprises absorbing means arranged between the disk drive body and the case, wherein the natural frequencies of the first grounding portion and the second grounding portion are respectively different from those of the absorbing means. 18. The portable disk drive device according to claim 17, which has a higher natural frequency. 20. The portable type according to claim 17, wherein one of the first grounding portion and the second grounding portion has a natural frequency higher than a natural frequency of the other grounding portion. Disk drive device. 21. The material of the first ground portion is the second ground material.
18. The portable disk drive device according to claim 17, which is different from the material of the grounding portion of. 22. The portable disk according to claim 21, wherein one of the first ground portion and the second ground portion is made of a rigid material and the other ground portion is made of an elastic material. Drive device. 23. 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. 22. The portable disk drive device according to claim 21, comprising: 24. 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 repulsive elastic material. Item 23. The portable disk drive device according to item 21. 25. The material of the first ground portion is the second ground material.
18. The portable disk drive device according to claim 17, wherein the grounding area of the first grounding section is different from the grounding area of the second grounding section. 26. The material of the first ground portion is the second ground material.
18. The portable disk drive device according to claim 17, wherein the grounding portion is made of the same material, and the height of the first grounding portion is different from the height of the second grounding portion. 27. A disc drive main body having a disc-shaped recording medium, for recording information on the disc-shaped recording medium or reproducing information recorded on the disc-shaped recording medium, and the disc drive main body. A portable disk drive device including a case having a surface provided with a convex portion on an outer surface thereof, wherein the convex portion is with respect to a projection point of a center of gravity of the entire portable disk drive device with respect to a horizontal plane. A portable type, which is arranged only on one side of the surface or is distributed near one straight line on the surface passing through a projection point of the center of gravity of the entire portable disk drive device with respect to the horizontal plane. Disk drive device. 28. The convex portion is formed substantially parallel to the ridgeline of the surface and is continuously or intermittently formed.
The portable disk drive device according to claim 27. 29. The portable type according to claim 28, wherein a guide groove is provided on the surface substantially parallel to the convex portion, and a surface of the convex portion and a wall surface of the guide groove form a continuous flat surface. Disk drive device. 30. The height of the convex portion is a projection point of the center of gravity of the entire portable disk drive device with respect to the horizontal plane when the convex portion and the ridge of the surface of the case are grounded on the horizontal plane at the same time. 3. The height is such that it is not located between the convex portion and the ridgeline having the surface of the case.
8. A portable disk drive device according to item 8. 31. A disc drive main body having a disc-shaped recording medium for recording information on the disc-shaped recording medium or reproducing information recorded on the disc-shaped recording medium, and the disc drive main body. A portable disk drive device comprising an enclosing case, wherein the case has a surface, and when the surface of the case is arranged on a horizontal plane, the center of gravity of the entire portable disk drive device with respect to the horizontal plane is The portable disk drive device, wherein the projection point is located outside the surface of the case or near the ridgeline of the surface of the case. 32. The portable disc according to claim 31, wherein a surface of the case is a flat surface, and the case has a shape in which at least one ridgeline of a rectangular parallelepiped shape formed by six surfaces is cut out. Drive device. 33. The portable disk drive device according to claim 31, wherein a surface of the case is a flat surface, and an angle formed between the flat surface of the case and an adjacent surface is different from a right angle. 34. The portable disk drive device according to claim 31, wherein the surface of the case is an R surface formed by combining a plurality of curved surfaces. 35. A disc drive main body having a disc-shaped recording medium for recording information on the disc-shaped recording medium or reproducing information recorded on the disc-shaped recording medium, and the disc drive main body. A portable disk drive device, comprising: a case for enclosing, wherein the spatial center position of the case is deviated more largely than the position of the center of gravity of the entire portable disk drive device. . 36. The apparatus further comprises absorbing means arranged between the disk drive body and the case, wherein a portion of the absorbing means located in the vicinity of the position of the center of gravity of the absorbing means is more than the other portion. 36. The portable disk drive device according to claim 35, further absorbing shock from the case to the disk drive body. 37. The portable disk drive device according to claim 36, wherein the vibration absorbing means and the shock absorbing means include a cushioning member. 38. The portable disk drive device according to claim 37, wherein the thickness of a portion of the absorbing means located near the position of the center of gravity is thicker than the thickness of other portions. 39. The portable type according to claim 35, wherein the disk drive body has a connector, and the connector is arranged at a position largely deviated from a center of gravity of the entire portable disk drive device. Disk drive device. 40. The portable disk according to claim 35, further comprising a weight disposed between the case and the disk drive body to bias the position of the center of gravity with respect to the spatial center of the case. Drive device. 41. The portable disk drive device according to claim 40, wherein the weight is a container in which fluid, powder, or particles are movably enclosed. 42. A disc drive main body having a disc-shaped recording medium for recording information on the disc-shaped recording medium or reproducing information recorded on the disc-shaped recording medium, and the disc drive main body. A portable disk drive device comprising: a case to be enclosed, and a protection member which covers a part of the case and is arranged on an outer surface of the case so as to protect the case. 43. The portable disk drive device according to claim 42, wherein the protection member is an irreversible deformation member. 44. The portable disk drive device according to claim 42, wherein the protection member is a plastically deformable member. 45. The portable disk drive device according to claim 42, wherein the protection member is detachably attached to the case. 46. A disc drive main body having a disc-shaped recording medium for recording information on the disc-shaped recording medium or reproducing information recorded on the disc-shaped recording medium, and the disc drive main body. What is claimed is: 1. A portable disk drive device, comprising: a case to be enclosed; and a protection member that is disposed on an outer surface of the case and covers a part of the case, wherein the protection member is provided near a center of gravity of the entire portable disk drive device. Is a portable disk drive device. 47. A disc drive main body having a disc-shaped recording medium, wherein information is recorded on the disc-shaped recording medium or information recorded on the disc-shaped recording medium is reproduced, and a drive connector is provided. An external connector that receives a signal from the outside; a signal conversion unit that converts a signal of the first method received by the external connector into a signal of a second method different from the first signal; Storage means for storing a signal or a second signal, and input or output of a signal between the disk drive body and the external connector for storing the first signal or the second signal in the disk drive body And a signal control means for controlling the storage means. 48. The portable disk drive device according to claim 47, wherein the signal control means records a signal received by the external connector in the disk drive body and the storage means. 49. The signal control means causes signals of different systems received by the external connector to be recorded in the disk drive body and the storage means.
The portable disk drive device described in. 50. The signal control means according to claim 47, wherein the signal conversion means converts the signal received by the external connector into a signal of a different system, and records in the disk drive body and the storage means. Portable disk drive device. 51. The signal control means converts the signal received by the external connector by the signal conversion means into a signal of a different system, and records a signal of a different system in the disk drive body and the storage device. 48. The portable disk drive device according to claim 47, wherein 52. The portable disk drive device according to claim 47, wherein said storage means includes a semiconductor memory. 53. The case has an opening, the storage unit includes a semiconductor memory and a memory holding unit that holds the semiconductor memory detachably, and the semiconductor memory is exchanged from the opening of the case. 48. The portable disk drive device of claim 47, which is capable. 54. The storage means has an address storage area for storing address management information of the disk drive body, and the signal control means stores the address management information in conjunction with a recording operation of the disk drive body. 48. The portable disk drive device according to claim 47, which updates the address management information in the storage means and sends the address management information to the disk drive body when necessary. 55. When the image information is recorded in the portable disk drive device, the accumulating means forms an image of still image data representative of all the still image or moving image data stored in the accumulating means. 5. An image data storage area for storing as data management information, wherein the signal control means sends the image data management information according to a signal input from the external connector.
7. A portable disk drive device according to item 7. 56. The portable disk drive device according to claim 47, wherein said storage means has a remaining capacity storage area for storing the capacity of an unrecorded area of said disk drive body as remaining capacity management information. 57. A disc drive main body having a disc-shaped recording medium for recording information on the disc-shaped recording medium or reproducing information recorded on the disc-shaped recording medium; A portable disk drive device comprising a case to be enclosed and a plurality of external connectors exposed from the case to the outside and connected to the disk drive body. 58. The second external connectors, wherein the plurality of external connectors have a first external connector and electric contacts of a number greater than or equal to the first external connector, and have a shape different from that of the first external connector. 58. The portable disk drive device of claim 57, including an external connector. 59. The second external connector is arranged such that the electric contacts are arranged substantially in line on the outer surface of the case, and a partition wall is provided between the adjacent electric contacts.
The portable disk drive device according to claim 58. 60. The portable disk drive device according to claim 57, wherein the first external connector and the second external connector are separately arranged near both ends of the case. 61. The case has a rectangular parallelepiped shape formed from six surfaces, and the second external connector is arranged near a ridgeline of a surface facing a surface on which the first external connector is arranged. 61. The portable disk drive device according to claim 60. 62. An absorbing means arranged between the disk drive body and the case, a signal converting means for converting an output signal from the disk drive body into another signal of a different system, and the signal converting means. A storage unit that is connected and that can temporarily store a signal that is input to or output from the disk drive body; a cable that connects the signal conversion unit and the drive body connector to transmit a signal; The portable disk drive device according to claim 57, further comprising signal control means for controlling input / output of signals between the first external connector and the second external connector and the storage means. 63. Further provided is an erroneous erasure prevention means for simultaneously switching the permission / prohibition setting of writing to the disk drive main body to both the first external connector and the second external connector. Item 62. The portable disk drive device according to Item 62. 64. The erroneous erasure prevention unit includes a movable erasure erasure switching lever provided on the case, and an erroneous erasure for electrically switching writing permission / prohibition setting in association with the erroneous erasure switching lever. 63. The portable disk drive device according to claim 62, further comprising a changeover switch, wherein the signal control unit recognizes a setting of the erroneous erasure changeover switch and controls writing to the disk drive body. 65. The portable disk drive device according to claim 64, wherein the erroneous erasure prevention unit has at least one mode of write permission, write prohibition (readable), and start prohibition with respect to the disc drive body. . 66. A remaining amount display means for displaying remaining amount management information of the disk drive body, a built-in battery for supplying power to the remaining amount display means, the storage means and the signal control means, and the built-in battery Further comprising a power button for instructing power supply from the device, and by turning on the power button, the signal control unit reads out the remaining amount management information stored in the storage unit to display the remaining amount display unit. 63. The portable disk drive device according to claim 62, which is displayed on. 67. The remaining amount display means includes a liquid crystal screen,
67. The portable disk drive device according to claim 66, wherein the remaining amount management information is displayed on the liquid crystal screen by at least one of a number and a pictogram in Byte units. 68. The portable disk drive device according to claim 66, wherein the remaining amount display means includes a plurality of LEDs. 69. A detachable support for a portable disk drive device having a rectangular parallelepiped disk drive body for recording information on a disk-shaped recording medium or reproducing information recorded on the disk-shaped recording medium. A holder part, a plurality of anti-vibration means for supporting the holder part, and a frame part for fixing the anti-vibration means, wherein the portable disk drive device is in a state before being mounted on the holder part. With respect to the resonance frequencies in the long side direction and the short side direction of the disk drive body in the disk drive body and in the thickness direction of the disk drive body, the portable disk drive device is mounted on the holder portion by the vibration isolator. The long side, short side, and thickness direction of the disk drive body in the mounted state. An information recording / reproducing apparatus in which each of the resonance frequencies has a value that is lower than approximately 100 Hz. 70. A holder part for detachably supporting a portable disc drive device having a disc drive body for recording information on a disc-shaped recording medium or reproducing information recorded on the disc-shaped recording medium. A plurality of anti-vibration means for supporting the holder part, a cable for transmitting input / output signals of the portable disk drive device, a frame part for fixing the anti-vibration means, and a disk installed in the disk drive body. The total moment added by the elasticity of the vibration isolator and the cable with respect to the center of gravity of the entire portable disk drive device and holder supported by the vibration isolator in a plane substantially parallel to the recording medium. An information recording / reproducing apparatus, comprising: a center of gravity adjusting unit that is set to substantially 0. 71. The center-of-gravity adjusting means is configured by providing, on the holder part, a movable weight for finely adjusting the position of the center of gravity of the holder part and the entire portable disk drive device. The portable disk drive device according to claim 70. 72. The portable disk drive device according to claim 70, wherein the center-of-gravity adjusting means is configured such that a mounting screw fixing hole for the vibration isolating means to the frame portion is an elongated hole. 73. A holder part for detachably supporting a portable disc drive device having a disc drive body for recording information on the disc-shaped recording medium or reproducing the information recorded on the disc-shaped recording medium. A plurality of vibration isolating means configured of coil springs and dampers for supporting the holder portion, a cable for transmitting an input / output signal of the portable disk drive device, and a frame portion for fixing the vibration isolating means. The coil spring has a straight line passing through the center of gravity of the portable disk drive device supported by the vibration isolator and the entire holder part in a plane substantially parallel to the disk-shaped recording medium installed in the disk drive body. An information recording / reproducing device attached such that the axes of the coil springs are substantially aligned with each other. 74. A disc drive main body having a disc-shaped recording medium, wherein a head unit located and operating on the disc-shaped recording medium writes or reads information, an imaging means used for capturing an image, Motion vector detection means for continuously processing images input from the image pickup means to detect a motion vector of the image caused by camera movement; absolute value level of the motion vector obtained from the motion vector detection means and its continuation From time, it is determined that the device body may be in a falling state, the recording / reproducing operation by the head is stopped, and if necessary, the recording medium is saved outside the disk-shaped recording medium, and the absolute value of the motion vector Head retraction, which determines that the head has returned to the disk-shaped recording medium and restarts the recording / reproducing operation. An information recording / reproducing apparatus comprising: a control unit; and an image storage unit for temporarily storing an image input signal from an image pickup unit during head retraction by the head retraction control unit and an image output signal read from the disk drive body. 75. The information recording / reproducing apparatus according to claim 74, further comprising a switch for selectively turning ON / OFF the function of said head retracting control means by a user of the device.