JPH0574126A - Disk storage device - Google Patents

Abstract

PURPOSE: To achieve a low-profile disk storage device. CONSTITUTION: A housing in which a head disk assembly is incorporated is to be electrically connected with a card 3 equipped with an electronic control circuit. For this purpose, a substrate 4 of the housing is provided with a first connector 9; a second connector 10 is provided in a through hole 3e made in the card 3, being projected from both opening ends of the through hole 3e, and both connectors are engaged. Consequently, the whole disk storage device can be made thinner by the thickness of the card.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk storage device, and more particularly, to an electrical connection structure between a housing accommodating a head disk assembly and a card on which an electronic circuit is mounted and which is mounted outside the housing. The present invention relates to an electrical connection structure that can reduce the thickness of the entire storage device.

[0002]

2. Description of the Related Art A magnetic disk storage device has a housing in which the environment such as dust is controlled, in which a magnetic disk, a spin motor for rotating the magnetic disk at a high speed of several thousand revolutions per minute, Signal conversion head for writing or reading data by flying above the magnetic disk at a height of about sub-micron, and to the desired recording track arranged at sub-micron intervals on the magnetic disk. The actuator precision equipment to be positioned is stored to protect it from the dusty environment in the outside world. Electronic circuits that control these devices (electronic circuits that control writing and reading of data on the magnetic disk via the signal conversion head, electronic circuits that control the movement of the actuator and spin motors that rotate the magnetic disk The electronic circuit (including the controlling electronic circuit) is mounted on a card mounted outside the housing because of heat generation, connection with the outside, space, etc.

Therefore, an electrical connection structure between the housing and the card is required for transmitting and receiving signals and supplying electric power between the device mounted in the housing and the card mounted with the control electronic circuit. This connection structure requires thinning and downsizing as the magnetic disk storage itself becomes thinner and smaller, and the workability of assembling the magnetic disk storage is
This also affects productivity and must be taken into consideration.

An example of the conventional electrical connection structure between the housing and the card is US Pat. No. 5,025,3.
There is one shown in No. 36. This is provided on the card outside the housing by taking out the actuator inside the housing, the signal conversion head, and the cable (flexible circuit) electrically connected to the spin motor from the outside of the housing through the gap between the cover and the substrate that make up the housing. It is to be connected to the connector. In such a configuration, taking out the cable may impair the airtightness of the housing, and thus it may not be possible to maintain a controlled environment in the housing. Further, if the connector is provided on the surface of the card facing the housing, at least the housing and the card must be separated by the height of the connector, and the overall thickness of the disk storage device cannot be reduced. It may be possible to secure a space for housing the connector by denting the wall of the housing facing the connector on the card, but the shape of the housing becomes complicated, and interference between the housing wall and devices inside the housing is also a problem. Become.

Another conventional example is US Pat. No. 4,96.
5,684 and PCT International Publication No. WO91 / 0234
There is one shown in No. 9. Electrical connection between the inside and the outside of the housing is made through pins that are embedded in the substrate of the housing and project inward and outward. Through this pin, the actuator in the housing, the signal conversion head, and the spin motor are electrically connected to the connector provided on the card outside the housing. This connection structure has the advantage of ensuring airtightness within the housing. However, also in this case, it is necessary to separate the card and the housing by the height of the connector, and it is not possible to reduce the thickness of the entire disk device. Also,
Similarly, it is conceivable to dent the wall of the housing facing the connector to secure a space for accommodating the connector, but interference between the housing wall and a device inside the housing similarly poses a problem.

On the other hand, Japanese Utility Model Laid-Open No. 2-129766 discloses that an electronic component is mounted in a through hole formed in a printed circuit board, but nothing is suggested about a connector for making electrical connection. There is nothing to do.

[0007]

SUMMARY OF THE INVENTION Accordingly, the object of the present invention is to solve the above-mentioned problems of the conventional electrical connection structure between the inside of the housing and the card mounted outside the housing.

An object of the present invention is to provide a structure capable of electrically connecting the inside of a housing and a card mounted outside the housing without impairing the airtightness of the housing.

A further object of the present invention is to provide an electrical connection structure between the inside of the housing and the card mounted outside the housing, which can reduce the overall thickness of the disk storage device.

[0010]

The magnetic disk storage device according to the present invention has the following means in order to achieve the above-mentioned object. A first connector provided on a wall forming the housing and having terminals for electrically connecting the inside and the outside of the housing; and a first connector disposed in a through hole formed in the card on one side of both open ends of the through hole. A second connector that is fitted to a terminal outside the housing of the first connector to electrically connect the inside of the housing to the electronic circuit of the card. Embodiments of the present invention will be described below with reference to the drawings.

[0011]

1 to 7 show an embodiment of the present invention. First, a description will be given with reference to FIG. The magnetic disk storage device 1 includes a housing 2 and a card 3 mounted on a lower portion outside the housing 2 and having an electronic circuit for control mounted therein. The housing 2 includes a substrate 4 and a cover 5. In the housing 2, a spin supported by the substrate 4
A motor 16, a magnetic disk 6 rotated by the spin motor 16, and a slider 7 facing the magnetic disk 6 with a signal conversion head (not shown) for writing or reading data on the recording surface of the magnetic disk 6 attached. , The slider 7 is attached to one end, and the magnetic disk 6 is attached.
And an actuator 8 rotatably supported on the substrate 4 for positioning it on one of the desired tracks. The substrate 4 and the cover 5 can be hermetically sealed to create an environment in which the dust is controlled in the housing 2 separately from the outside. The outside world and the inside of the housing 2 are connected to each other through a breather filter (not shown) to prevent a pressure difference between the inside and outside of the housing 2.

A write signal to the magnetic disk 6 or a read signal from the magnetic disk 6 and an actuator 8
The electric power to the two rows of pin terminals is implanted in the substrate 4 via the insulator 9a to electrically connect the inside and the outside of the housing 2 as shown in FIGS. It is sent from or to the card 3 mounted on the back of the housing 2 via the row 9b. The two rows of pin terminal rows 9b planted on the substrate 4 are the first connectors 9
Make up. A flexible printed circuit 11 provided inside the housing 2 is electrically connected to the pin terminal row 9b protruding into the housing 2 so as to process the signal of the signal conversion head. Then, the second connector 10 attached to the card 3 is electrically connected to the pin terminal row 9b protruding outside the housing 2.

Next, description will be made with reference to FIGS. 1 and 4. FIG. 4 is a view of the substrate 4 and the card 3 as seen from below in FIG. The card 3 is a printed circuit board having a circuit pattern (not shown), and the electronic circuit component 12 is mainly mounted on the main surface of the housing 2 of the card 3 that does not face the board 4. Therefore, no height is placed between the card 3 and the substrate 4 of the housing 2 so that the gap between the card 4 and the housing 2 is made as small as possible. Further, a circular opening 3a is provided in the center of the card 3, and the spin motor 16 protruding from the lower part of the substrate 4
The card 3 is mounted so that the bottom of the a penetrates the card 3 as close to the substrate 4 of the housing 2 as possible. The card 3 is provided with a screw hole 3c for attaching the card 3 to the substrate 4 of the housing 2.
A connector 3b for connecting to the system is provided at one end of the card 3, and a notch 3d around which a boss 4a for mounting a disk storage device, which is provided around the substrate 4, is projected is provided at the periphery.

In this embodiment, a substantially rectangular through hole 3e is provided at the portion of the card 3 facing the first connector 9. As shown in FIGS. 5 and 6, the substantially rectangular parallelepiped second connector 10 is provided in the through hole 3e.
Are arranged so as to project from both open ends. The pin terminal row 9b of the first connector 9 is inserted into the portion of the second connector 10 that protrudes from the opening end of the through hole 3e on the side of the housing 2 that faces the substrate 4 (lower side in FIG. 6) to establish electrical connection. The female terminal 10a (see FIG. 1) to be performed is open. The female terminal 10a is electrically connected to a printed circuit pattern (not shown) of the card 3 at the portion of the second connector 10 protruding from the opening end of the through hole 3e on the side not facing the substrate 4 (upper side in FIG. 6). The terminal 10b for this purpose extends so as to be orthogonal to the direction of the through hole 3e, and is engaged with the edge of the through hole 3e of the card 3. The second connector 10 is attached to the card 3 by soldering the terminals 10b to a printed circuit pattern (not shown).

As can be seen from FIG. 6, the connector 10
Is projected from the surface of the card 3 by an amount obtained by subtracting the thickness h of the card 3 from the height H of the main body of the connector 10. This makes it possible to reduce the thickness of the entire device by the thickness h of the card 3 as compared with mounting the connector 10 on the surface of the card 3. Only a part of the height H of the main body of the connector 10 projects to the board 4 side (lower side in FIG. 6) of the housing 2, so that the card 3 can be mounted close to the board 4 of the housing 2. Board 4 side of connector 10 (lower side of FIG. 6)
It is not preferable to set the protrusion height to 0 to 0 because the card 3 and the substrate 4 may come into contact with each other and the insulation between the card 3 and the substrate 4 may not be maintained. Therefore, the connector 1
The protrusion height of 0 toward the substrate 4 side (lower side in FIG. 6) is always necessary. Also, since many electronic components 12 are mounted on the surface of the card 3 on the side not facing the substrate 4 (upper side in FIG. 6), it is preferable that the terminal 10b for circuit connection of the connector 10 is provided on this side. .. Therefore, the terminal 10b is locked to the peripheral edge of the through hole 3e and positioned so that the terminal 10b can be soldered to a printed circuit pattern (not shown) so that the through hole 3e
It is preferable that the connector 10 is provided so as to extend at a right angle to the direction (4), and for this reason, the connector 10 also protrudes to a side not facing the substrate 4 (upper side in FIG. 6) to some extent.

The first connector 9 protruding outside the housing 2
The pin terminal row 9b of the female connector 10a of the second connector 10
, The electrical connection between the inside of the housing 2 and the card 3 can be facilitated. Then, signals can be exchanged and electric power can be supplied between the electronic circuit of the card 3 and the electronic device in the housing 2 without impairing the airtightness of the housing 2.

FIG. 7 shows a disk storage device 1 of this embodiment.
By arranging the second connector 10 in the through hole of the card 3 in a front view seen from the side, the overall thickness of the device 1 can be reduced by the thickness of the card 3.

[0018]

The present invention has the following effects.
In the disk storage device thus configured, the connector on the card side is installed in the through hole formed in the card, so that the height protruding from the card can be reduced, and therefore, the entire disk storage device can be made smaller. The thickness can be reduced.

Since the electrical connection between the inside of the housing and the card is made by the terminal penetrating the wall of the housing, the hermeticity of the housing can be maintained.

The electrical connection between the inside of the housing and the card can be made by connecting a pair of connectors of the first connector and the second connector, so that the assembling work of the housing and the card is simplified and the disk storage device Productivity can be increased.

[0021]

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a magnetic disk storage device according to an embodiment of the present invention,

FIG. 2 is a perspective view showing a substrate of a housing of the magnetic disk storage device of this embodiment,

3 is a cross-sectional view of the substrate of the housing in FIG. 2 taken along line III-III,

FIG. 4 is a developed perspective view of the magnetic disk storage device of this embodiment as seen from the lower side of FIG.

FIG. 5 is a perspective view showing a second connector of this embodiment,

6 is a sectional view of the second connector in FIG. 5 taken along line VI-VI,

FIG. 7 is a front view of the magnetic disk storage device of this embodiment as viewed from the side.

[Explanation of symbols]

 1 Magnetic Disk Storage Device 2 Housing 3 Card 3e Through Hole 4 Substrate 6 Disk 7 Slider 9 First Connector 10 Second Connector 12 Electronic Circuit Parts

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Kimura 2-13-13 Kugenuma Kaigan, Fujisawa City, Kanagawa Prefecture Kugenuma Kaigan Heights 202

Claims (3)

[Claims] 1. A housing for maintaining a controlled environment inside, a disk having a recording surface that is rotatably supported in the housing, and writing data on the recording surface of the disk provided in the housing. In a disk storage device comprising a signal conversion head for reading and a card mounted outside the housing and having an electronic circuit for control mounted therein, the disk storage device is provided on a wall forming the housing A first connector having a terminal for electrically connecting the outside with the outside of the housing of the first connector on one side of both open ends of the through hole formed in the through hole formed in the card. A disk storage device comprising: a second connector that fits into a terminal and electrically connects the inside of the housing and the electronic circuit of the card. . 2. The disk storage device according to claim 1, wherein the second connector is electrically connected to an electronic circuit of the card on the other side of the both open ends. 3. The card has the electronic circuit mainly mounted on a main surface of a remote side of the housing.
The disk storage device according to the item.