JP2001344954A - Casing of hard disk recording and reproducing device and hard disk recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a casing which can hold a hard disk drive unit without using the conventional holders and a hard disk recording and reproducing device having this casing and to enhance the reliability of the device by decreasing the number of parts and the number of assembly process steps of the device, reducing a manufacturing cost and lessening the vibration and impact from outside in assembling to the hard disk drive unit as far as possible. SOLUTION: A bottom 2a is provided with a hole 2b and supporting parts 3 for housing and supporting the hard disk drive unit 1 on the inner side of the hole 2b are integrally formed near the hole by levering the bottom 2a of the casing 2. Further, buffer plates 7 are adhered to the supporting parts 3 so as to embed the spacings between the hard disk drive unit 1 and the supporting parts 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hard disk recording / reproducing apparatus included in a peripheral device of a personal computer or an audio / video data recording / reproducing apparatus for recording digital data on a hard disk or reproducing digital data from the hard disk. . In particular, the present invention relates to a housing of the hard disk recording and reproducing device.

[0002]

2. Description of the Related Art FIG. 5 is an exploded view of a portion for supporting a hard disk drive unit 1 in a conventional hard disk recording / reproducing apparatus. In this figure, a part of the top and side surfaces of the hard disk drive unit 1 and a part of the side surface of the housing 2 are broken and removed so that the inside can be illustrated. FIG. 6 is a cross-sectional view of the conventional hard disk recording / reproducing apparatus after being assembled and completed, taken along a vertical plane passing through a straight line VI-VI shown in FIG.

The hard disk drive unit 1 has a substantially rectangular parallelepiped shape, and is fixed by screws 9 with its lower surface in contact with the upper surface of a holder 8. The holder 8 is a substantially rectangular sheet metal slightly wider than the lower surface of the hard disk drive unit 1. The two edge portions 8a on the short side of the holder 8 are formed so as to be slightly lower than the joint surface 8c with the hard disk drive unit 1 and provided with holes 8b for inserting screws 4, spacers 5 and elastic members 6. Have been. The spacer 5 is a metal cylinder. A shaft portion having a screw thread of the screw 4 is inserted from one of the opening ends.
Since the length of the spacer 5 is slightly shorter than the shaft of the screw 4, the spacer 5 is fixed by the screw 4, as shown in FIG. The elastic member 6 is a gourd-shaped cylinder made of rubber or elastomer having high elasticity and having an outer diameter of the central portion 6a smaller than that of the end portion 6b. The outer diameter of the central portion 6a of the elastic member 6 is substantially equal to the inner diameter of the hole 8b provided in the edge 8a of the holder 8. The elastic member 6 has the spacer 5 inserted from one open end, and
As shown in FIG. 6, the outer surface of the central portion 6a is fixed to the inner surface of the hole 8b of the edge portion 8a by a screw 4 so as to contact the inner surface.
At this time, as shown in FIG.
As a result, the outer surfaces of both ends 6b are pressed against the vicinity of the hole 8b in the edge 8a. In this way, the holder 8 is held by the elastic force of the elastic member 6.

The hard disk drive unit 1 magnetically records digital data on the hard disk 1a and reproduces the digital data from the hard disk 1a by a magnetic head 1c provided at the tip of an actuator 1b. Examples of the digital data include EPG (Electric Programming), which is system information for an operating system of a computer and various information of a broadcast program.
Guide) information, image data, and the like.

[0005] The magnetic head 1c writes and reads data at a position normally floating by a small amount of about 0.1 µm from the surface of the hard disk 1a. Therefore, the magnetic head 1c is likely to be displaced from a place where data is to be written or read due to an external shock or vibration. In particular, when a large shock is applied in the vertical direction, the magnetic head 1c may collide with the hard disk 1a and damage the magnetic head 1c and the hard disk 1a. Therefore, screw 4 and spacer 5
The elastic member 6 elastically supports the holder 8, so that vibration and impact applied to the hard disk drive unit 1 in the vertical direction are reduced.

[0006] As shown in FIG. 6, the joining surface 8 c of the holder 8 with the hard disk drive unit 1 is
Is separated from the bottom 2a by a distance about the length of the screw 4. Since the edge 8a on the short side of the holder 8 is about half the length of the elastic member 6 below the joint surface 8c with the hard disk drive unit 1, the short side of the hard disk drive unit 1 is connected to an external interface and power supply. Cables are installed without being hindered by the screws 4.

[0007]

In the conventional hard disk recording / reproducing apparatus, as described above, the plate-like holding tool 8 is used for holding the hard disk drive unit 1. Therefore, the number of parts required for the device is large, and the weight of the entire device is large. In addition, the hard disk drive unit 1 was
And the hard disk drive unit 1
And the step of fixing the holding tool 8 with the fixed to the housing 2. Therefore, the number of assembly steps of the apparatus is large. In addition, it takes a long time for the hard disk drive unit 1 to be directly handled by a human hand before the hard disk drive unit 1 is fixed to the housing 2. This is not preferable for the hard disk drive unit 1 because the internal structures of the hard disk 1a, the actuator 1b, and the like are vulnerable to external vibration and impact.

Accordingly, the present invention provides a housing capable of holding a hard disk drive unit without using a conventional holder.
Also, a hard disk recording / reproducing device having the housing is provided. Accordingly, the object is to reduce the number of parts and the number of assembling steps of the device to reduce the manufacturing cost, and to increase the reliability of the device by minimizing external vibration and shock during the assembling of the hard disk drive unit. I do.

[0009]

According to the present invention, there is provided a hard disk recording / reproducing apparatus for recording data on a hard disk and reproducing data from the hard disk; , Inside the recess or near the hole,
A housing having a support for accommodating and supporting the hard disk drive unit inside the recess or the hole; and a holding member for elastically supporting the hard disk drive unit on the support.

In the above configuration, the support portion of the hard disk drive unit is a part of the housing, and does not include a holder which is a separate component from the conventional housing. Further, in assembling the hard disk recording / reproducing apparatus described above, the hard disk drive unit is fixed to the bottom of the housing as follows: First, the housing is placed on the hard disk drive unit so as to fit inside the recess or hole at the bottom. Then, the hard disk drive unit is fixed to the support. In this case, the number of assembling steps for fixing the hard disk drive unit to the housing is smaller than before, and the assembling time is shorter than before. Therefore, the possibility of damaging the internal structure of the hard disk drive unit due to vibration or impact during assembly is smaller than in the past.

In the above-described hard disk recording / reproducing apparatus of the present invention, the support portion may be integrated with another portion of the bottom. This eliminates the need for a component for fixing to the housing, which is required in the conventional holder, for the support portion of the housing according to the present invention. Further, the support portion may be provided by cutting and raising a part of the bottom. This allows
The support can be easily formed so as to be integral with the bottom of the housing.

In addition to the above configuration, the hard disk recording / reproducing apparatus of the present invention may have a buffer member made of an elastic body disposed between the hard disk drive unit and the support. Thus, the hard disk drive unit accommodated in the concave portion or the hole at the bottom of the housing does not directly collide with the inner surface of the concave portion or the support portion due to external vibration or impact. Further, since the impact force at the time of collision is absorbed by the cushioning member, the inside of the hard disk drive unit is not broken by external vibration and impact.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described below using preferred embodiments. << Embodiment 1 >> FIG. 1 is an exploded view showing a structure near a support portion 3 in a hard disk recording / reproducing apparatus according to Embodiment 1 of the present invention. In this figure, a part of the side surface of the housing 2 is broken and removed so that the inside can be illustrated. FIG. 2 is a vertical sectional view taken along a line II-II in FIG. 1 when the hard disk recording / reproducing apparatus of the first embodiment is assembled.

The hard disk drive unit 1 is 101.6
A substantially rectangular parallelepiped shape of mm × 146.1 mm × 25.4 mm and about 500 g
With weight. In the first embodiment, unlike the conventional example (FIG. 5), the hard disk drive unit 1 is held in the housing 2 with the lower surface 1d facing upward. The lower surface 1d of the hard disk drive unit 1 is provided with four fixing screw holes 1e, and the short side surface 1f is provided with terminals (not shown) for connection to an external interface or the like.

The housing 2 is formed by bending a sheet metal and has a substantially rectangular parallelepiped shape. The material of the housing 2 may be a resin. 1 and 2 illustrate only a portion supporting the hard disk drive unit 1, but in addition, a control circuit and an interface for the hard disk drive are installed in a portion (not shown) of the housing 2. Since the housing 2 has only the bottom 2a and a pair of opposing side surfaces, when assembling the device of the first embodiment, the work of installing the hard disk drive unit 1, the control circuit, the interface, and the like in the housing 2 is performed at the top of the housing 2. Can be done from After installing those components in the housing 2, a top plate (not shown) is placed on the upper portion of the housing 2.

On the bottom 2a of the housing 2, a size slightly larger than the hard disk drive unit 1 is set to 110 mm × 165 mm.
Is provided with a rectangular hole 2b. On the long side of hole 2b,
The support portion 3 protrudes upward by about 35 mm, and its tip 3a is bent horizontally toward the inside of the hole 2b. Two holes 3b each having an inner diameter of about 8 mm for passing the screw 4, the spacer 5, and the elastic member 6 are provided at the distal end portion 3a of the support portion 3. The support portion 3 is the bottom 2a of the housing 2 that originally covered the hole 2b.
Is cut and bent by press working, that is, cut and raised to form.

The screw 4 has a length of about 10 mm, an outer diameter of the shaft of about 3 mm, and an outer diameter of the head 4a of 12 mm as defined in the above standard. The screw 4 is screwed into the screw hole 1e provided on the lower surface 1d of the hard disk drive unit 1 through the hole 3a of the support portion 3. The spacer 5 is a metal cylinder having a height of about
8.5mm, inner diameter about 3.2mm, outer diameter about 4mm. A shaft portion having a screw thread of the screw 4 is inserted from one of the opening ends. Since the length of the spacer 5 is slightly shorter than the shaft of the screw 4, the spacer 5 is fixed on the lower surface 1d of the hard disk drive unit 1 by the screw 4, as shown in FIG.

The elastic member 6 is made of low hardness butyl rubber or elastomer. The shape of the elastic member 6 is a gourd-shaped cylinder in which the outer diameter of the central portion 6a is smaller than the end portion 6b.
Has a height of about 11 mm, an inner diameter of about 4 mm, an outer diameter of about 8 mm at the center 6a, and an outer diameter of about 11 mm at the end 6b. In particular, the outer diameter of the central portion 6a is substantially equal to the inner diameter of the hole 3a of the support portion 3. As shown in FIG. 2, the elastic member 6 has the spacer 5 inserted from one open end thereof, and as shown in FIG. 2, the outer surface of the central portion 6a contacts the inner surface of the hole 3a and is fixed by the screw 4. At this time, as shown in FIG. 2, the elastic member 6 is compressed in the vertical direction by the screw 4, so that the outer surfaces of both ends 6b are pressed against the vicinity of the hole 3a. In this way, the hard disk drive unit 1 is connected to the distal end portion 3a of the support portion 3 so as to hang, and is elastically supported by the elastic force of the elastic member 6.

Since the hard disk drive unit 1 is elastically supported as described above, shocks or vibrations exerted on the hard disk drive unit 1 from the outside, especially in the vertical direction, are hardened by the elastic members 6.
Weakened by the elastic force of Therefore, in the hard disk drive unit 1, there is no possibility that the magnetic head collides with the hard disk and both are destroyed.

With respect to shocks or vibrations applied from the outside in the horizontal direction, the horizontal vibration of the hard disk drive unit 1 cannot be suppressed to a negligible level by the elastic force of the elastic member 6 alone. Therefore, as shown in FIG. 2, the distance g between the support portion 3 and the hard disk drive unit 1 is made sufficiently large. In the first embodiment, the distance g needs to be at least 3 mm or more. However, the lower limit value of g varies depending on the shape and hardness of the elastic member 6.
By setting the sufficiently large distance g in this way, even if the hard disk drive unit 1 swings in the horizontal direction due to external shock or vibration in the horizontal direction, it will not collide with the support portion 3.

In the first embodiment, the hard disk drive unit 1 is connected to the support 3 of the housing 2 as follows. First, place the hard disk drive unit 1 on the bottom 1d
On top. The housing 2 is placed thereon such that the hard disk drive unit 1 enters the hole 2b on the bottom 2a. Bottom 2
Support the hard disk drive unit 1 from above
Connect to 3. Further, an interface, a power supply, and the like are connected from the upper side of the bottom 2a to the side surface 1f on the short side of the hard disk drive unit 1. In this way, the hard disk drive unit 1 is temporarily held in the holder 8 (see FIG.
The hard disk drive unit 1 can be installed in a shorter time and with a smaller number of steps than when the hard disk drive unit 1 is installed on the bottom 2a of the housing 2 after being fixed in 5). Since the hard disk drive unit 1 is less likely to be directly subjected to vibration or shock from the outside during assembly, there is little possibility that the internal actuator or the hard disk or the like will be damaged.

The support portion 3 of the first embodiment is provided on the long side of the hole 3a, but may be provided on the short side or on all four sides. Further, instead of the hole 2b, a concave portion having the same shape as the hole 2b may be provided in the bottom 2a of the housing 2, and the hard disk drive unit 1 may be housed therein. In this case, a plurality of holes are provided in the upper portion or side portions of the concave portion, and the screws 4 are fixed to the screw holes 1e of the lower surface 1d of the hard disk drive unit 1 through the holes, or the side surface 1f
Are connected to an interface or the like.

<Embodiment 2> FIG. 3 is an exploded view showing a structure near a support portion 3 in a hard disk recording / reproducing apparatus according to Embodiment 2 of the present invention. In this figure, a part of the side surface of the housing 2 is omitted so that the inside can be illustrated. FIG. 4 is a cross-sectional view taken along a vertical plane passing through a straight line IV-IV in FIG. 3 when the hard disk recording / reproducing apparatus of the second embodiment is assembled. The second embodiment is similar to the first embodiment except that a buffer plate 7 is added. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals as those in FIGS. 1 and 2, and the detailed description thereof is the same as that of the first embodiment.

In the second embodiment, as shown in FIG. 3, the support portions 3 are provided on all four sides of the hole 2b.
Among them, the support portion 3 on the long side has the same configuration as that of the first embodiment. On the other hand, the support portion 3 on the short side is different from the long side and has a plate shape parallel to the vertical direction. Meanwhile 3c
Is lower than the other, so the hard disk drive unit
When the side surface 1f on the side of the first support portion 3c is connected to an external interface and a power supply by a cable or the like, the support portion 3c does not prevent the connection. Further, unlike the first embodiment, the buffer plate 7 is bonded to the inner surface of each of the four support portions 3 inside the hole 2b. The buffer plate 7 is a sponge made of polyester or polyether and has a substantially flat shape of about 100 mm × 20 mm × 4 mm. The material of the buffer plate 7 may be butyl rubber of low hardness. The buffer plate 7 is bonded to the support 3 with an epoxy-based adhesive.

As shown in FIG. 4, the buffer plate 7 is in contact with the side surface of the hard disk drive unit 1 so as to fill the gap between the hard disk drive unit 1 and the support 3. As a result, the horizontal vibration or impact exerted from the outside is reduced by the elastic force of the buffer plate 7, so that the hard disk drive unit 1 does not largely vibrate in the horizontal direction. Furthermore, in assembling the apparatus of the second embodiment, when the housing 2 is placed on the hard disk drive unit 1, the position of the hard disk drive unit 1 is naturally guided to an appropriate position by the buffer plate 7. Therefore, attachment of the hard disk drive unit 1 is easier than in the first embodiment.

In the second embodiment, similarly to the first embodiment, a recess having a similar shape may be provided on the bottom 2a of the housing 2 instead of the hole 2b, and the hard disk drive unit 1 may be accommodated therein. In the above-described embodiment, the numerical values representing the sizes of the components such as the hard disk drive unit 1 are merely examples. It will be easily understood by those skilled in the relevant field that the present invention is effective not only in the size represented by the numerical value but also in various other sizes as in the above embodiment. .

[0027]

As described above, according to the present invention, since the hard disk drive unit is supported by the support unit formed integrally with the housing, the conventionally used holder is unnecessary. Therefore, the number of parts is smaller than before,
The direct material cost is lower than before, and the weight of the whole equipment is smaller. Further, since the number of assembling steps is smaller than in the past, the manufacturing cost is small.

In addition, conventionally, the assembling time for fixing the hard disk drive unit to the housing is shorter and the number of assembling steps is smaller. Therefore, there is little possibility that the hard disk drive unit is directly vibrated or shocked from the outside at the time of assembly, and the internal actuator or the hard disk is damaged. When the cushioning member is adhered to the support portion, it is relatively easy to attach the hard disk drive unit to the housing, and it is possible to reduce the impact or vibration applied to the hard disk drive unit from the outside in the horizontal direction. As a result, it is possible to provide a hard disk recording / reproducing device with higher reliability than before.

[Brief description of the drawings]

FIG. 1 is an exploded view showing a structure near a support unit 3 in a hard disk recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along a vertical plane passing through a straight line II-II in FIG. 1 when the hard disk recording / reproducing apparatus according to the first embodiment of the present invention is assembled.

FIG. 3 is an exploded view showing a structure near a support unit 3 in the hard disk recording / reproducing apparatus according to the second embodiment of the present invention.

4 is a cross-sectional view taken along a vertical plane passing through a straight line IV-IV in FIG. 3 when the hard disk recording / reproducing apparatus according to the second embodiment of the present invention is assembled.

FIG. 5 shows a conventional hard disk recording / playback apparatus.
FIG. 3 is an exploded view showing a structure of a holding portion of the hard disk drive unit 1.

6 is a partial cross-sectional view taken along a vertical plane passing through a straight line VI-VI in FIG. 5 when a conventional hard disk recording / reproducing device is assembled.

[Explanation of symbols]

 1 Hard disk drive unit 2 Housing 3 Support 4 Screw 5 Spacer 6 Elastic member 7 Buffer plate

Claims (7)

[Claims] 1. A support having a concave portion or a hole on the lower surface of a bottom and for supporting a hard disk drive unit in the concave portion or the hole inside the concave portion or near the hole. A housing for a hard disk recording / playback apparatus. 2. The housing of a hard disk recording / reproducing apparatus according to claim 1, wherein said support portion is integral with another portion of said bottom. 3. The housing for a hard disk recording / reproducing apparatus according to claim 2, wherein said support portion is provided by cutting and raising a part of said bottom. 4. A hard disk drive unit for recording data on a hard disk and reproducing data from the hard disk; a hard disk drive unit having a concave portion or a hole on a bottom lower surface, and a hard disk drive inside the concave portion or near the hole. A hard disk recording / reproducing apparatus comprising: a housing having a support portion for supporting the drive unit in the recess or the hole; and a holding member for elastically supporting the hard disk drive unit on the support portion. 5. The hard disk recording / reproducing apparatus according to claim 4, wherein said support portion is integral with another portion of said bottom. 6. The hard disk recording / reproducing apparatus according to claim 5, wherein said support portion is provided by cutting and raising a part of said bottom. 7. The hard disk recording / reproducing apparatus according to claim 4, further comprising a buffer member made of an elastic body disposed between said hard disk drive unit and said support portion.