JP2003045168A - Disk driver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk drier which is capable of improving impact resistance even when a casing drops. SOLUTION: This disk driver 10 has a disk-like information recording medium 20 which records information, a head which writes the information to the information recording medium 20 and reads the written information out of the information recording medium 20, an actuator which moves the head on the information recording medium 20 and the casing 11 which has a housing space for housing the information recording medium 20, the head and the actuator. Freely elastically deformable damper members 40 having impact resistance are arranged at corners 30 of the easing 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device for storing a large amount of information for an information processing device, and a disk drive using a rotating disk type information recording medium such as a magnetic disk or an optical disk. It relates to the device.

[0002]

2. Description of the Related Art With the recent miniaturization and weight reduction of electronic devices such as portable personal computers and portable information terminals, these electronic devices are equipped with disk drive devices, for example, hard disk drive devices, as information recording devices. It has become so. With the demand for miniaturization and thinning of this hard disk drive device, for example, a hard disk drive device having a thickness of 10.5 mm that complies with the PCMCIA PYPE-III standard has appeared. The casing (casing) of the hard disk drive device is usually a rectangular box, and the hard disk, the head, the actuator of the head, and the like are housed in the box. The housing 11 is made of metal (for example, aluminum) from the viewpoint of ensuring rigidity while ensuring heat dissipation.

[0003]

For this reason, when the disk drive device is dropped and dropped on the floor, for example, a shock is directly applied to the aluminum housing, so that the hard disk inside the housing, The impact force may be transmitted to the head and actuator, causing problems. Therefore, an object of the present invention is to solve the above problems and to provide a disk drive device capable of improving impact resistance even when the housing is dropped.

[0004]

According to a first aspect of the present invention, there is provided a disc-shaped information recording medium for recording information, a head for writing information on the information recording medium, and reading the written information from the information recording medium. A disk drive device comprising: an actuator for moving the head on the information recording medium; and a housing having a housing space for housing the information recording medium, the head, and the actuator, in a corner of the housing. Is a disk drive device in which an elastically deformable damper member having impact resistance is arranged. According to the first aspect of the present invention, an elastically deformable damper member having impact resistance is arranged at a corner of the housing of the disk drive device. As a result, even if the housing is dropped and dropped on the floor, for example, the damper member can absorb this impact, and thus the damper member can be added to the head, the actuator, the information recording medium, and the like housed in the housing space of the housing. Shock can be mitigated.

According to a second aspect of the present invention, in the disk drive device according to the first aspect, the housing has a first cover and a second cover attached to the first cover to form the accommodation space. The damper members for receiving an impact applied to the first cover and the second cover are arranged at the four corners of the first cover and the second cover. In the second aspect, the damper member for receiving the impact applied to the first cover and the second cover is arranged at the four corners of the first cover and the second cover. This makes the first
It is possible to reduce the impact on the corners of the cover and the second cover.

According to a third aspect of the present invention, in the disk drive device according to the second aspect, the damper member includes a fitting portion that is fixed by being fitted into a groove portion formed in the corner portion of the second cover. The shock absorbing portion is connected to one end of the fitting portion and is exposed to the outside of the housing, and is connected to the other end of the fitting portion, and the shock absorbing portion is attached to the outer surface of the second cover. And a disengagement prevention part that prevents the impact absorbing part from coming off from the second cover. In the third aspect, the fitting portion of the damper member is fitted and fixed in the groove formed in the corner of the second cover. The shock absorbing part is connected to one end of the fitting part and is exposed to the outside of the housing. The disengagement prevention part is connected to the other end of the fitting part, and the shock absorption part is connected to the second part.
It is applied to the outer surface of the cover to prevent the shock absorbing portion from coming off the second cover. As a result, the shock absorbing portion can directly receive the shock.

According to a fourth aspect of the present invention, in the disk drive device according to the second aspect, the damper members arranged at the corners of the second cover are arranged in the grooves of the second cover. It is connected by the connecting part. In the present invention, since the damper member arranged at each corner of the second cover is connected by the connecting portion arranged in the groove of the second cover, the damper member at each corner uses the connecting portion. Can be treated as an integral member.

According to a fifth aspect of the present invention, in the disk drive device according to the second aspect, the damper member arranged at each corner of the second cover is a connection arranged on an outer surface of the second cover. Connected by the department. In the present invention, since the damper member arranged at each corner of the second cover is connected by the connecting portion arranged on the outer surface of the second cover, each damper member is treated as an integral member by the connecting portion. be able to.

According to a sixth aspect of the present invention, in the disk drive device according to the first aspect, a metallic member is further arranged on the outer surface of the damper member. According to the present invention, since a metallic member is arranged outside the damper member, a metallic member having excellent slidability is used when the disk drive device is housed inside another electronic device, for example. The disk drive device can be smoothly inserted and removed from the electronic device.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiment described below is a preferred specific example of the present invention,
Although various technically preferable limitations are given, the scope of the present invention is not limited to these forms unless otherwise specified in the description below.

FIG. 1 shows a preferred embodiment of the disk drive device of the present invention. The disk drive device 10 is, for example, a hard disk drive device. 2 shows a state in which the first cover 12 of the disk drive device 10 of FIG. 1 is removed from the second cover 14, and FIG. 3 is an exploded view of the hard disk drive device.

As shown in FIGS. 1 and 2, the hard disk drive device 10 includes a housing 11, a hard disk 20,
It has a magnetic head (corresponding to a head) 21, an actuator 22, a motor 23, and the like. Hard disk 2
0, head 21, actuator 22, motor 23,
It is housed in a housing space S formed in the housing 11. The housing 11 has a first cover 12 and a second cover 14. The first cover 12 is also called an upper cover,
The second cover 14 is also called a lower cover. The first cover 12 and the second cover 14 of the housing 11 are made of metal, in particular, aluminum, from the viewpoint of ensuring heat dissipation and rigidity. This disk drive device is used by mounting it in a PC card slot of a so-called notebook personal computer which is an example of electronic equipment, and is a very small and thin device.

When the motor 23 shown in FIG. 2 operates, the hard disk 20 continuously rotates. The magnetic head 21 is provided at the tip of the actuator 22. The actuator 22 uses a voice coil motor to drive the magnetic head 21.
Can be swung in the R direction along the top of the hard disk 20. As a result, the head 21 moves to the hard disk 20.
Information can be written onto or read from already written information.

As shown in FIG. 3, the voice coil motor 29 of the actuator 22 has a voice coil 23A and yokes 24 and 25. A magnet 26 is disposed between the yokes 24 and 25, and the actuator 22 can swing within a predetermined angle range by the interaction between the magnetic field of the magnet 26 and the magnetic field generated by energizing the coil 23A. Besides, as shown in FIG. 3, an electric circuit board 27 is accommodated in the second cover 14. Necessary electronic components are mounted on the electric circuit board 27.

As shown in FIG. 1, the first cover 12 and the second cover 14 of the housing 11 are, for example, rectangular cases. The four corners 30, 32, 34, 3 of this housing 11
The damper members 40 are arranged at 6 respectively.
The damper member 40 is made of an impact-resistant and elastically deformable material.
When 0 is dropped on the floor, the corner 3
It is a member for alleviating the impact applied to 0, 32, 34, 36. As the material of the damper member 40, the following materials can be adopted. When a resin is used, ABS (acrylonitrile butadiene styrene), PA (polyamide), PBT (polybutylene terephthalate), POM (polyacetal), PC (polycarbonate), PC / ABS and the like can be used. When an elastomer is used as the material, polystyrene type, polyolefin type, PVC (polyvinyl chloride) type,
Elastomers such as polyester-based, polyurethane-based, polyamide-based, and fluoropolymer-based elastomers can be used. When rubber is used as the material, silicone rubber (SR), chloroprene rubber (CR), ethylene / propylene rubber (EPM / EPDM), nitrile rubber (NB
R) and fluororubber (FPM) can be adopted.

FIG. 4 is an enlarged view of the portion A of FIG. 1, and FIG. 5 is an enlarged view of the portion B of FIG. 1 excluding the first cover 12. The portion C shown in FIG. 1 has a bilaterally symmetrical shape with the portion A of FIG. 1, and the portion D of FIG. 1 has a bilaterally symmetrical shape with the portion B. FIG. 6 shows a state in which the damper member 40 is arranged with respect to the four corners 30 of the second cover 14.

In the illustrated embodiment, the damper member 40
Has a structure that can be fitted and fixed to the second cover 14 side as an example. The shape of the damper member 40 is, as shown in FIG. 5, a fitting portion 41 and a shock absorbing portion 4
2, and has a detachment prevention portion 43. Shock absorber 4
2. The fitting portion 41 and the detachment preventing portion 43 are integrally formed, and the fitting portion 41 is a portion connecting the detachment preventing portion 43 and the shock absorbing portion 42.
The fitting portion 41 is a portion that can be fitted into the groove portion 45 formed in each corner portion 30 of the second cover 14. The shock absorbing portion 42 is a triangular columnar portion having an isosceles triangular shape when viewed from the V direction and a rectangular shape when viewed from the W direction as shown in FIG.

The disengagement prevention portion 43 shown in FIG.
In the state of being fitted in the groove portion 45, it comes into close contact with the inner surface 30A of the corner portion 30 as shown in FIG. Fitting part 41
Is fitted into the groove portion 45, the inner surface 4 of the shock absorbing portion 42 is
2A is in close contact with the outer surface 30B of the corner portion 30. As a result, the damper member 40 includes the shock absorbing portion 42 at the second position.
In a state where the cover 14 is exposed to the outside, it can be fixed to the corner portion 30 so as not to come off due to the action of the detachment preventing portion 43. As shown in FIG. 6, the outer surface 42C of the shock absorbing portion 42 is flush with the outer surface 30C of the second cover 14.

As shown in FIG. 4, the height H of the shock absorbing portion 42 is the total height H of the first cover 12 and the second cover 14.
It is set larger than 1. As a result, the shock absorbing portion 42 is attached to the surface 12E of the first cover 12 and the second cover 14
Since the protrusion 42T is formed to protrude higher than the surface 14E of the first cover 12, the protrusion 42T can protect the surface 12E of the first cover 12 and the surface 14E of the second cover 14 from the impact of a drop. Of course you can.

As described above, since the damper members 40 are provided at the four corners 30 of the housing 11 of the disk drive device 10 shown in FIG. 1, the disk drive device 10 can be dropped and placed on, for example, the floor. Even in the event of a collision, the shock absorbing portion 42 of the damper member 40 hits the floor, so that the components contained in the housing 11 of the disk drive device 10 shown in FIG. 2, for example, the hard disk 20 and the actuator 22. The impact applied to the magnetic head 21, the motor 23, etc. can be reduced.

Moreover, as shown in FIGS. 5 and 6, since each damper member 40 is mechanically fixed at, for example, the corner portion 30 of the second cover 14 by fitting, the shock absorbing portion 42 is removed. There is no. As shown in FIG. 6, with the damper member 40 fitted in each corner 30, the first cover 12 is overlapped with the second cover 14 as shown in FIG. It doesn't come out in the Y direction. In the above-described embodiment, the damper member 40 is arranged at each corner portion 30, and each damper member 40 is independently arranged and fixed at the corresponding corner portion 30.

Next, FIGS. 7 and 8 show another embodiment of the present invention. In the embodiment shown in FIGS. 7 and 8, the damper members 40 are provided to the four corners 30 of the second cover 14, but these damper members 40 are connected to the connecting portion 1.
It is connected by 50 and 151. FIG. 8 shows an example in which the damper members 40 are connected and integrally formed by the connecting portions 150 and 151. The material of the damper member 40 and the connecting portions 150 and 151 is the same as the material of the damper member 40 described above. Connection part 150, 151
Is the groove portions 160, 1 of the second cover 14 as shown in FIG.
It is attached by being fitted into 61. The damper member 40 is formed in, for example, an isosceles triangular shape in cross section. Since the connecting portions 150 and 151 are fitted and retained in the groove portions 160 and 161 of the second cover 14 in this way, for example, the four damper members 40 use the connecting portions 150 and 151 to hold the second cover 14. Groove 16
It is possible to surely insert and fix it with respect to Nos. 0 and 161, and the damper member 40 will not come off or be displaced.

9 and 10 show another embodiment of the present invention. In the embodiment of FIGS. 7 and 8, the connecting portions 150 and 151 are the groove portions 1 of the second cover 14.
60, and the connecting portions 150 and 151 are the second
It is not exposed to the outside of the cover 14. However, in the embodiment of FIG.
The damper members 40 are arranged so as to correspond to the one corner portion 30, and the damper members 40 are integrally formed by using the connecting portions 180 and 181. Each damper member 40 has a shock absorbing portion 42, a fitting portion 41, and a detachment preventing portion 43. The fitting portion 41 is fitted in the groove portion 45 of the second cover 14. In this way, each damper member 40 is connected to the connecting portion 180, 1
Since it is connected by 81, the damper member 40 is
It can be securely fixed to the cover 14. Moreover, the connecting portions 180 and 181 are formed on the outer surface 3 of the second cover 14.
Since it covers the 0B side, the connecting portions 180 and 181 also protect the outer surface of the housing and can absorb the shock. Connection part 180,181
The middle portion of the second cover 14 is attached using the mounting portion 199.
It is fixed to.

FIG. 10 shows still another embodiment of the present invention. In the embodiment of FIG. 10, damper members 240 are arranged at the four corners 30 of the second cover 14. The damper member 240 includes a portion 34
2. It has a fitting portion 341 and a detachment prevention portion 343. The portion 342, the fitting portion 341, and the detachment prevention portion 343 are made of a material having slidability, for example, a metal. As the metal material, for example, SUS (stainless steel) or the like can be adopted. This part 34
3 has an isosceles triangular shape when viewed from above, and an elastically deformable member 400 having impact resistance is disposed between the inner surface 342A of the portion 342 and the outer surface 30B of the second cover 14. There is. As the material of the member 400, the material of the damper member 40 of FIG. 1 can be used. With such a structure, the portion 342 having excellent slidability is
The disk drive device 1 shown in FIG. 1 is arranged by exposing the corner portion 30 of the cover 14 to the outside.
The slidability when 0 is inserted into or taken out of a PC slot of a personal computer can be improved as compared with the case where an elastically deformable member is directly exposed. Moreover, since the member 400 is arranged between the portion 342 and the second cover 14, even if the disk drive device is dropped on the floor or the like, the impact applied to the portion 342 can be absorbed by the member 400. . Therefore,
In the embodiment of FIG. 10, it is possible to improve both the slidability associated with taking in and out of the disk drive device and the impact resistance associated with a drop or the like.

The disk drive device of the present invention magnetically writes information on a disk-shaped information recording medium and reads the written information from the information recording medium, or writes information optically or magneto-optically. It can also be applied to the case of reading information. In the embodiment of the present invention, the so-called dead spaces at the four corners of the housing are used to dispose the damper member having excellent impact resistance, so that the structure does not hinder the downsizing of the disk drive device. is there.

[0026]

As described above, according to the present invention,
Impact resistance can be improved even when the housing is dropped.

[Brief description of drawings]

FIG. 1 is a perspective view showing a preferred embodiment of a disk drive device of the present invention.

FIG. 2 is a perspective view showing the internal structure of the disk drive device of FIG.

FIG. 3 is a perspective view showing the internal structure of FIG. 2 in a further exploded manner.

FIG. 4 is a perspective view showing a portion A (portion C) of FIG. 1 in an enlarged manner.

5 is an exploded perspective view showing a structural example of a portion B (portion D) in FIG.

FIG. 6 is a plan view showing a mounting example of a second cover and damper members arranged at four corners of the second cover.

FIG. 7 is a plan view showing another embodiment of the disk drive device of the present invention.

FIG. 8 is a view showing a damper member and a connecting portion used in FIG.

FIG. 9 is a plan view showing still another embodiment of the present invention.

FIG. 10 is a plan view showing still another embodiment of the present invention.

[Explanation of symbols]

10 ... Disk drive device, 11 ... Housing, 1
2 ... first cover, 14 ... second cover, 20 ...
・ Hard disk (an example of information recording medium), 30 ...
Corner portion, 40 ... Damper member, 41 ... Fitting portion, 42 ... Impact absorbing portion, 43 ... Disengagement prevention portion

Claims (6)

[Claims] 1. A disc-shaped information recording medium for recording information, a head for writing information on the information recording medium and reading the written information from the information recording medium, and moving the head on the information recording medium. A disk drive device having an actuator and a housing having a housing space for housing the information recording medium, the head, and the actuator, wherein a corner portion of the housing is elastically deformable and has impact resistance. A disk drive device in which a damper member is arranged. 2. The housing has a first cover and a second cover attached to the first cover to form the accommodation space, and the four corners of the first cover and the second cover. The disk drive device according to claim 1, wherein the damper member for receiving an impact applied to the first cover and the second cover is disposed in the disk drive device. 3. The damper member is connected to a fitting portion fitted and fixed in a groove formed in the corner portion of the second cover, and one end portion of the fitting portion, and The shock absorbing portion exposed to the outside and the other end of the fitting portion are connected to each other, and the shock absorbing portion is applied to the outer surface of the second cover to prevent the shock absorbing portion from coming off from the second cover. A detachment prevention part
The disk drive device according to claim 2, further comprising: 4. The disk drive device according to claim 2, wherein the damper members arranged at the corners of the second cover are connected by a connecting portion arranged in a groove of the second cover. . 5. The disk drive device according to claim 2, wherein the damper members arranged at the corners of the second cover are connected by connecting portions arranged on the outer surface of the second cover. 6. The disk drive device according to claim 1, further comprising a metallic member disposed on the outer surface of the damper member.