JP2008010119A - Disk unit - Google Patents

Abstract

A disk device capable of further miniaturization is provided.
A top cover of an HDD 110 closes an opening portion of a base that is a housing and has a top cover emboss 111 that is a first lock portion on an outer surface. The control circuit board is substantially rectangular and is provided on the outer surface of the base. The bottom cover 108 is provided so as to overlap the outer surface of the control circuit board, and has a guide part including a side guide part that covers the side part of the base and the circuit board, and a top cover guide part that continues to the top cover guide part and overlaps the outer surface of the top cover. . The bottom cover guide portion 108-1 is provided with a bottom cover emboss 109 that is a second lock portion that engages with a top cover emboss 111 that is a first lock portion.
[Selection] Figure 3

Description

  The present invention relates to a disk device having a disk as a recording medium.

In recent years, disk devices such as magnetic disk devices and optical disk devices have been widely used as external recording devices and image recording devices for computers.
As a disk device, for example, a magnetic disk device generally has a rectangular box-shaped housing. Inside the housing are a magnetic disk as a magnetic recording medium, a spindle motor as a driving means for supporting and rotating the magnetic disk, a plurality of magnetic heads for writing and reading information on the magnetic disk, and these magnetic heads. A head actuator movably supported with respect to the magnetic disk, a voice coil motor for rotating and positioning the head actuator, a substrate unit having a head IC, and the like are accommodated.

  A printed circuit board that controls the operation of the spindle motor, the voice coil motor, and the magnetic head is screwed to the outer surface of the housing via a board unit. An interface (I / F) connector for connecting the magnetic disk device to another external device is soldered to the end of the printed circuit board.

As a magnetic disk device, one that is thinly formed in a card shape and that can be loaded into a card slot of a personal computer, for example, is provided (for example, Patent Document 1). In such a card-like magnetic disk device, it is necessary to make it thinner and smaller than a conventional magnetic disk device. Therefore, various components are mounted on a plate-like base, and at the periphery of the base. A support frame is fixed along the plate, and a plate-like top cover is attached to the support frame. A printed circuit board is provided on the back side of the base, and the I / F connector on the printed circuit board is positioned and held by a dedicated fixing member provided on the support frame.
Japanese Patent Laid-Open No. 2001-210058

  In recent years, the magnetic disk device has been further miniaturized so that the magnetic disk device can be used as a recording device for a wider variety of electronic devices, in particular, smaller electronic devices. However, even when the magnetic disk device is downsized, the basic components of the disk device cannot be reduced, and it is difficult to secure a sufficient installation space on the small base. Moreover, when fixing a printed circuit board to a housing | casing, a screw is normally used. Also, a screw is used when a top cover that closes the inside of the housing is fixed to the housing. However, along with the miniaturization of the apparatus, it has become difficult to provide the screw and the screw hole for receiving the screw in the housing.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a disk device capable of reducing the number of parts and further reducing the size.

  To achieve the above object, a disk device according to the present invention includes a rectangular box-shaped housing having an opening, a disk-shaped recording medium disposed in the housing, a head provided in the housing, A head subassembly that moves the head relative to the recording medium, a top cover that closes the opening of the housing and has a first lock portion on the outer surface, A control circuit board that is substantially rectangular and is provided on the outer surface of the casing, and a side guide part that is provided on the outer surface of the control circuit board and covers the side of the casing and the circuit board. A bottom cover having a guide portion that includes a top cover guide portion that continuously overlaps an outer surface of the top cover and a second lock portion that is provided on the guide portion and engages with the first lock portion; That.

  The disk device according to the present invention includes a rectangular box-shaped housing having an opening, a disk-shaped recording medium disposed in the housing, and a head that is provided in the housing and movably supports the head. And a head subassembly for moving the head relative to the recording medium, a top cover for closing the opening of the housing, and a control circuit provided in a substantially rectangular shape so as to overlap the outer surface of the housing A board, a side guide part that is slidably attached to the outer surface of the control circuit board, covers a side part of the housing and the circuit board, and a top cover guide part that is continuous with the side cover part and overlaps the outer surface of the top cover. And a bottom cover having a guide portion.

  As described above, according to the present invention, the first and second lock portions are provided on the top cover and the bottom cover, respectively, and are engaged with each other, thereby eliminating the need for fixing screws and reducing the number of parts. It is possible to provide a disk device that can be further reduced in size.

Embodiments in which the present invention is applied to a hard disk drive (hereinafter referred to as HDD) will be described in detail below with reference to the drawings.
(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic diagram of an HDD according to this embodiment.
In the HDD of this embodiment, a spindle motor (not shown) is fixed to a sheet metal base 101, and a magnetic disk 102 is attached to the spindle motor and fixed by a clamper 103.

  A voice coil motor (VCM) which is a drive source for driving a magnetic bearing 102 with a unit bearing (not shown) supporting a head subassembly (HSA) 105 having a head (not shown) for recording / reproducing data as a rotation center. ) 104, and the data on the magnetic disk 102 is recorded and reproduced.

  Further, when recording is not being performed and when the head subassembly (HSA) 105 is stopped, the head subassembly (HSA) 105 is retracted to the lamp assembly 106 and the head of the head subassembly (HSA) 105 is moved to the magnetic disk 102 when subjected to an impact. It is the structure which prevents contacting.

  Each of the above components is configured inside a base 101, which is a rectangular box-shaped housing having an opening, and is closed by a top cover 107, thereby sealing the inside of the apparatus and maintaining an airtight state. Yes.

2 to 4 are explanatory views of a mounting method of the bottom cover in the present embodiment.
The bottom cover 108 in this embodiment is a sheet metal processed product and is formed in a predetermined shape.
The HDD 110 is slid and inserted into the U-shaped portions on both sides of the bottom cover 108, that is, the bottom cover guide portion 108.
As shown in FIG. 3, a bottom cover emboss 109 that is a second lock portion protrudes from the bottom cover guide portion 108-1 toward the HDD 110 side, that is, toward the outer surface of the opposing top cover 107.

  A first top cover emboss 111 is also provided on the outer surface of the top cover 107 in a direction toward the inside of the housing of the HDD 110 so as to face the bottom cover emboss 109 serving as the second lock portion.

  FIG. 4 is a view showing a state in which the HDD 110 is slid and inserted to the back of the bottom cover 108, and the top cover emboss 111 and the bottom cover emboss 109 are fitted together as shown in the sectional view at the time of mounting in FIG. The bottom cover 108 is fixed to the HDD 110.

This eliminates the need for parts such as screws for fixing the top cover 107 and the bottom cover 108.
In the present embodiment, the first and second lock portions are described as an example in which only one pair is provided as a pair. However, the number is not limited to one, and two or more may be provided.
As described above, the disc-shaped recording medium 102 and the head are movably supported in the base 101 which is a rectangular box-shaped casing having an opening, and the head is moved with respect to the recording medium 102. A head subassembly 105 is provided inside.

  Furthermore, the opening of the base 101 which is a casing is closed, and a top cover 107 having a top cover emboss 111 which is a first lock portion on the outer surface, and a substantially rectangular shape are provided so as to overlap the outer surface of the base 101. A control circuit board 100 is disposed.

  Further, a guide portion 108 is provided to overlap the outer surface of the control circuit board 100 and includes a side guide portion that covers the side portion of the base 101 and the circuit board 100 and a top cover guide portion that is continuous with the side cover portion and overlaps the outer surface of the top cover 107. -1 and a bottom cover 108 having a bottom cover emboss 109 that is a second lock portion that engages with a top cover emboss 111 that is a first lock portion. It is composed.

  With the above configuration, the top cover emboss 111 and the bottom cover emboss 109, which are the first and second lock portions, are provided on the top cover 107 and the bottom cover 108, respectively, and by engaging them, no fixing screws are required. Thus, it is possible to provide a disk device capable of reducing the number of parts and further reducing the size.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS.
6 and 7 show a second embodiment of the present invention, in which a lock projection 113 as a first lock portion is provided on the top cover 107a, and a lock that engages the lock projection 113 on the guide portion of the bottom cover 108a. A nail 112 is provided.

As in the first embodiment, the HDD 110a is slid and inserted into the bottom cover 108a.
As the HDD 110a is slid, the lock claw 112 provided on the guide portion of the bottom cover 108a rides on the lock projection slope 113a, and the lock claw portion 112 is elastically deformed to get over the lock projection 113 and be fixed.

In the present embodiment, the lock protrusion 113 is described as being provided at two locations on the outer surface of the top cover, but it is also possible to provide one or three or more locations.
As described above, the first lock portion is a lock projection 113 that is a projection protruding from the outer surface of the top cover 107a, and the second lock portion is a claw-like lock that contacts the lock projection 113 that is the first lock portion. A claw portion 112 is formed.

  With the above configuration, the top cover 107a and the bottom cover 108a are provided with the lock projection 113 and the lock claw 112, which are the first and second lock parts, respectively, and are engaged with each other, thereby eliminating the need for fixing screws. Therefore, it is possible to provide a disk device capable of further reducing the size by reducing the number of parts.

(Third embodiment)
A third embodiment of the present invention will be described with reference to FIGS.
8 and 9 show a third embodiment of the present invention, in which the top cover 107b is provided with a concave lock recess 115 in which the outer surface of the top cover 107b is depressed at the first lock portion, and the guide portion of the bottom cover 108b is provided. A lock claw 114 that engages with the lock recess 115 is provided.

Similar to the first embodiment described above, the HDD 110b is slid and inserted into the bottom cover 108b.
When the HDD 110b is slid, the lock claw 114 is elastically deformed by hitting the outer shape of the HDD 110b. When the HDD 110b is further pushed in while the lock claw 114 is elastically deformed, it fits into the lock recess 115 and the bottom cover 118b is fixed to the HDD 110b.

  In addition, in this embodiment, although the example which provided the pair of the lock | rock recessed part 115 and the lock nail | claw 114 only in one place was demonstrated, it is also possible to provide not only one place but two or more places.

  As described above, the first lock portion is the lock recess 115 recessed from the outer surface of the top cover 107b, and the second lock portion is in contact with the lock recess 115 which is the first lock portion. It is a claw-like lock claw 114 to be pressed.

  With the above configuration, the top cover 107b and the bottom cover 108b are provided with the lock recess 115 and the lock claw 114, which are first and second lock parts, respectively, and by engaging them, a fixing screw is unnecessary, It is possible to provide a disk device capable of further reducing the size by reducing the number of parts.

Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.
For example, the number of magnetic disks is not limited to one and can be increased as necessary. The magnetic disk is not limited to 0.85 inches, but may be 1.8 inches or 2.5 inches. Further, the control circuit board may be configured to include a connector for connecting to an external device instead of the connection cable.

The disassembled perspective view which shows the internal structure of HDD which concerns on embodiment of this invention. 1 is an exploded perspective view showing an HDD and a bottom cover according to a first embodiment. FIG. 3 is a diagram illustrating a structure of first and second lock portions of the HDD according to the first embodiment. The figure which shows the fitting state of the 1st, 2nd locking part of HDD which concerns on 1st Embodiment. Sectional drawing and the front view which show the fitting state of the 1st, 2nd locking part of HDD which concerns on 1st Embodiment. The disassembled perspective view which shows HDD and a bottom cover which concern on 2nd Embodiment. The figure which shows the structure of the 1st, 2nd locking part of HDD which concerns on 2nd Embodiment. The disassembled perspective view which shows HDD and a bottom cover which concern on 3rd Embodiment. The figure which shows the structure of the 1st, 2nd locking part of HDD which concerns on 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Control circuit board, 101 ... Base housing | casing, 102 ... Magnetic disk,
103 ... Clampering, 104 ... Voice coil motor (VCM),
105 ... Head subassembly (HSA), 106 ... Lamp assembly,
107 ... top cover, 108 ... bottom cover,
108-1 ... Bottom cover guide part, 109 ... Bottom cover embossing,
110 ... HDD, 111 ... Top cover embossing, 112 ... Lock claw part,
113 ... Lock projection, 114 ... Lock claw, 115 ... Lock recess

Claims (6)

A rectangular box-shaped housing having an opening;
A disc-shaped recording medium disposed in the housing;
A head subassembly which is provided in the housing and supports the head movably and moves the head relative to the recording medium;
A top cover that closes the opening of the housing and has a first lock on the outer surface;
A control circuit board provided in a substantially rectangular shape and overlaid on the outer surface of the housing;
A guide portion provided on the outer surface of the control circuit board and including a side guide portion covering the casing and a side portion of the circuit board, and a top cover guide portion connected to the outer surface of the top cover, and the guide And a bottom cover having a second lock portion that is provided in the portion and engages with the first lock portion. The disk device according to claim 1, wherein the first lock portion and the second lock portion are embossed. The said 1st lock part is a protrusion which protrudes in the outer surface of the said top cover, The said 2nd lock part is a nail | claw-shaped part which contacts the said 1st lock part. Disk unit. The first lock part is a recess recessed from an outer surface of the top cover, and the second lock part is a claw-like part that contacts the first lock part and presses the recess. Item 2. The disk device according to Item 1. A rectangular box-shaped housing having an opening;
A disc-shaped recording medium disposed in the housing;
A head subassembly which is provided in the housing and supports the head movably and moves the head relative to the recording medium;
A top cover for closing the opening of the housing;
A control circuit board provided in a substantially rectangular shape and overlaid on the outer surface of the housing;
A guide portion that is slidably attached to the outer surface of the control circuit board and includes a side guide portion that covers the casing and a side portion of the circuit board, and a top cover guide portion that is continuous with the side cover portion and overlaps the outer surface of the top cover. And a bottom cover having a disk drive. The top cover and the bottom cover are fixed by engaging a first lock portion provided on an outer surface of the top cover and a second lock portion provided on the guide portion. The disk device according to claim 5.

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