JPH0749677Y2 - Magnetic disk unit - Google Patents

Description

[Detailed Description of the Invention] [Outline] Regarding a magnetic disk device widely used for external storage of various computer systems, etc., it is necessary to reduce the number of cable wires inside the device to improve connection reliability and reduce manufacturing cost. For the purpose of the above, in a magnetic disk device containing a large number of hermetically sealed magnetic disks and a control gate for the magnetic disks, the magnetic disks are divided into a plurality of groups and arranged in groups. The magnetic disk is connected by a printed board, and the gate, the printed board, and each printed board are connected by a cable.

[Industrial application field]

The present invention relates to a magnetic disk device widely used for external storage of various computer systems and the like.

Recently, a method of mounting a large number of small-sized and large-capacity magnetic disks inside the apparatus has been adopted as a means for solving the contradictory requirements of increasing the capacity and reducing the installation space of the magnetic disk apparatus. Therefore, the number of cables connecting the gates controlling the magnetic disks and each magnetic disk becomes large, which causes problems such as a rise in the manufacturing cost of the device and a decrease in the reliability of the connection. There is a demand for new magnetic disk drives that can be reduced in number.

[Conventional technology]

As shown in FIG. 3, a magnetic disk device which has been widely used in the past has a large number of small and large capacity magnetic disks 2 mounted inside the device, and a servo circuit and a drive logic for controlling the magnetic disk 2 and A printed board (not shown) such as a read amplifier for controlling data or a variable frequency oscillator is mounted on one set or a plurality of gates 1 arranged separately from the magnetic disk 2. Then, the magnetic disk 2 and the gate 1
A large number of cables 3 are laid between the magnetic disk 2 and the printed board housed inside, and are arranged on the back surface of each magnetic disk 2 as shown in FIGS. 4 (a) and 4 (b). The cables 3 are connected to the respective connectors 2-1 provided, and signals are exchanged with the respective magnetic disks 2 by the cable 3.

[Problems to be solved by the device]

A problem with the conventional magnetic disk device described above is that a large number of magnetic disks 2 as shown in FIG. 4 and a gate on which a printed circuit board such as a servo circuit or a drive logic for controlling the magnetic disks 2 is mounted. 1 is housed in the device, the gate 1 and each magnetic disk 2
Connection cable 3 for connecting the space and each magnetic disk 2
, The mounting design becomes difficult, the mounting man-hours also increase, and the connecting cable 3 and the connector 2-1 also increase, resulting in high cost.

Further, there is a problem that the number of connections by the connector increases and the number of obstacles such as a half-miss of the connector and noise increases.

In view of the above problems, it is an object of the present invention to provide a magnetic disk device capable of reducing the number of cable wirings inside the device to improve connection reliability and reduce manufacturing cost.

[Means for Solving the Problems]

As shown in FIGS. 1 and 2, the present invention provides a magnetic disk device that accommodates a large number of hermetically sealed magnetic disks 2 and a control gate 1 for the magnetic disks 2. A plurality of units are divided and arranged in a plurality of groups, the magnetic disks 2 in the group are connected by a mother board 13, and the gate 1 is provided.
And the mother board 13 and each mother board 13 are connected by a cable 15.

[Action]

In the present invention, the magnetic disks 2 in each of the groups divided into a plurality of groups are connected by the mother board 13, and the groups 1 and the gates 1 are connected by the cable 15. Therefore, between the gates 1 and the respective magnetic disks 2, It is possible to reduce the number of cables connecting between the individual magnetic disks 2, facilitating the mounting design, reducing the mounting work man-hours, reducing the manufacturing cost, and reducing the obstacles such as half-missing connectors and noise. It becomes possible.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram showing a connection structure of a magnetic disk device according to this embodiment, and FIG. 2 is a schematic sectional view of the magnetic disk device, in which the same members as those in FIGS. 3 and 4 are shown. Are labeled with the same symbols, but the other 13 are motherboards that connect to the gates to connect with each magnetic disk in the group, 14 are relay printed boards that are connected between the magnetic disks and the motherboard, and 15 is the gate And a motherboard and a cable that connects each motherboard.

The mother board 13 is formed into a size that can be combined with, for example, four magnetic disks 2 divided into groups as shown in FIG. As shown in FIG. 2B, a connector 13-1 corresponding to the connector 2-1 of the magnetic disk 2 is disposed on the surface of the above.

As shown in FIG. 2B, the relay printed board 14 has a connector 2 provided on the back surface of each magnetic disk 2 on one end side of an insulating board having a pattern for connecting the mother board 13 and the magnetic disk 2. Attach the connector that connects with -1,
A connector 14-1 for coupling with the connector 13-1 of the motherboard 13 is attached to the other end side.

The cable 15 is, for example, a flat cable having a predetermined number of signal lines, and connectors 15-1 to be coupled to the gate 1 or the mother board 13 are fixed to both ends of the flat cable.

A magnetic disk device using the above member is shown in FIG.
As shown in FIG. 2, the magnetic disks 2 are divided into a plurality of groups, for example, four groups each, and the motherboard 13 is erected on the back side of the magnetic disks 2 in the group, and as shown in FIG. By interposing the relay printed board 14 between the connector 13-1 of the motherboard 13 and the connector 2-1 of the magnetic disk 2, the motherboard 13 and the magnetic disk 2 are connected by the plug-in method.

Then, as shown in FIG. 1, the cable 15 is wired and connected between the gate 1 arranged in the apparatus and the mother board 13 connected to the magnetic disks 2 divided into groups, and each mother board is connected. Cable 15 is routed between 13 and connected.

As a result, the number of cables 15 to be wired in the device can be reduced, so that the number of mounting work steps can be reduced and the number of cables 15 can be reduced, so that the manufacturing cost can be reduced and obstacles such as disconnection of connectors can be reduced.

Although the present invention has been described above with reference to the illustrated embodiment, the present invention is not limited to the embodiment described above, and for example, the number of magnetic disks in a group may be any, and the number of groups may be any number.

[Effect of device]

As is apparent from the above description, according to the present invention, there are advantages that the number of cable wirings inside the device can be reduced, the reliability of connection can be improved, and the manufacturing cost can be reduced with an extremely simple structure. It is possible to provide a magnetic disk device that can be expected to be economical and to improve reliability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a connection structure of the present invention, FIG. 2 is a schematic sectional view showing a magnetic disk device of this embodiment, and FIG. 3 is a block showing a conventional connection structure. 4 and 5 are schematic sectional views showing a conventional magnetic disk device. In the figure, 1 is a gate, 2 is a magnetic disk, 2-1, 13-1, 14-1, 15-1 is a connector, 13 is a mother board, 14 is a relay printed board, 15
Indicates a cable.

Claims (1)

[Scope of utility model registration request] 1. A magnetic disk device comprising a large number of sealed magnetic disks (2) and a control gate (1) for the magnetic disks (2), wherein a plurality of magnetic disks (2) are provided. The magnetic disks (2) arranged in a plurality of groups are arranged in the group.
Are connected by a printed board (13), and the gate (1) and the printed board (13) and the printed boards (13) are connected by a cable (15). Disk device.