JPS647505Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to magnetic disk storage devices.

Magnetic disk storage devices generally use a floating magnetic head, and information is written to and read from the magnetic disk without the magnetic head coming into contact with the recording surface of the magnetic disk. By the way, floating magnetic heads can come into contact with the recording surface of a magnetic disk and damage the recording surface if no precautions are taken when the power supply to the device is stopped or during transportation or storage. Moreover, if the magnetic head and the recording surface remain in contact for a long period of time, a phenomenon may occur in which the two come into close contact with each other, which may impede the use of the apparatus.

This invention was made in view of the above points,
The object is to provide a magnetic disk storage device that can reliably prevent the magnetic head from coming into contact with the recording surface of the magnetic disk when the power is cut off or during transportation or storage.

According to the present invention, the object is to provide a magnetic disk, a magnetic head disposed facing one recording surface of the magnetic disk, and a plate-shaped elastic member extending flat and supporting the magnetic head at one end. and a rotation mechanism that rotates this plate-shaped elastic member in a plane parallel to the one recording surface, and the rotation of the plate-shaped elastic member by this rotation mechanism causes the magnetic head to stand by with respect to the one recording surface. a contact prevention member that forces the plate-like elastic member away from the one recording surface in order to forcibly prevent the magnetic head from coming into contact with the one recording surface when the magnetic head is set at the one recording surface; The movement mechanism includes a motor and an arm whose one end is connected to the output shaft of the motor and whose other end is connected to the other end of the plate-like elastic member, and the contact prevention member is connected to the base. , and an arm extending from the base in parallel with the one recording surface, and when the magnetic head is set to the standby position, one flat surface of the plate-shaped elastic member comes into contact with the tip of the arm. When the plate-shaped elastic member is separated from the one recording surface and the magnetic head is set to face the one recording surface other than the standby position, the plate-shaped elastic member is separated from the one flat surface of the plate-shaped elastic member. A magnetic disk storage device in which the base and the arm are arranged relative to the plate-like elastic member so that contact with the tip of the arm is released and one flat surface of the plate-like elastic member does not face the arm. This is accomplished by a device.

Next, the present invention will be explained in detail with reference to a specific example shown in the drawings.

In the figure, the output shaft 3 of the drive motor 2 attached to the housing 1 includes a hub 4 and a clamp 5.
A plurality of magnetic disks 7a, 7b, 7c are attached via spacers 6, etc., and when the motor 2 is operated and the shaft 3 is rotated in the A direction, the disks 7a, 7b, 7c are also attached in the A direction. rotated in the direction A plurality of head arms 10 are attached to the output shaft 9 of a step motor 8 for head positioning, which is attached to the housing 1 in the same way as the motor 2. ~16 is attached, member 1
Magnetic heads 17 to 22 are located at the tips of each of the magnetic heads 1 to 16.
is installed.

Heads 17 and 18 are arranged facing each other with disk 7a in between, and heads 19 and 2 are arranged opposite to each other with disk 7a in between.
0 and heads 21 and 22 are similarly arranged facing each other with disks 7b and 7c in between. Members 11 and 12, members 13 and 14, and members 15 and 16 face each other, and member 1
1, 13 and 15 are heads 17, 19 and 2, respectively.
1 in the direction of disks 7a, 7b and 7c,
That is, the members 12, 14, and 16 are biased in the B direction and supported elastically, and the members 12, 14, and 16 are supported by the heads 18, respectively.
20 and 22 as disks 7a, 7b and 7, respectively.
It is biased and supported elastically in the c direction, that is, in the C direction. The distances l between members 11 and 12, between members 13 and 14, and between members 15 and 16 each become smaller toward the head side, and from position 23 to the head side, the distance l becomes smaller. It is smaller than the height h of the enlarged portions 25, 26, and 27 of the contact blocking member 24. The contact prevention member 24 is fixed to the housing 1, and has a plurality of arms 28, 29, and 30 that are parallel to each other, and enlarged portions 25, 26, and 27 are formed at the respective tips of the arms 28, 29, and 30. When the step motor 8 is operated to rotate the output shaft 9 and the arm 10 is set to the initial position as a standby position as shown in FIG. 26 is inserted between members 13 and 14, and enlarged portion 27 is inserted between members 15 and 16, respectively.

Magnetic disk storage device 4 configured in this way
0, when the output shaft 3 is rotated by the operation of the motor 2, the disks 7a, 7b and 7c are also rotated A.
rotated in the direction When the step motor 8 is activated and the output shaft 9 is rotated in order to write or read information on the disks 7a, 7b, and 7c being rotated in this way, the arm 10 is also rotated in the direction D, and the head is rotated. Each of 17-22 is positioned on a recording track of disks 7a, 7b and 7c. Arm 10 from the state shown in FIG.
When is rotated in direction D, the enlarged portions 25 to 27 move between members 11 and 12, between members 13 and 14, and between members 15 on the head side of position 23, respectively.
As a result of getting out from between and 16, the head 17,1
9 and 21, respectively, in the B direction by members 11, 13 and 15, respectively, and heads 18, 20 and 22.
each of C by each of members 12, 14 and 16
The disks 7a, 7b and 7c are biased toward the recording surfaces of the disks 7a, 7b and 7c.
This contact is prevented by the air flow caused by the rotation of the disks 7c and 7c, and each of the heads 17 to 22 is connected to the disk 7c.
Information is written to and read from a, 7b, and 7c in a non-contact manner. The rotation direction of the output shaft 9,
By setting the amount of rotation angle to a predetermined value, the heads 17 to 22 can be positioned on any recording track on the disks 7a, 7b, and 7c.

In the device 40, when the power is cut off, the step motor 8 is operated by the backup power source, the output shaft 9 is rotated, the arm 10 is rotated in the E direction, and the arm 10 is automatically set to the position shown in FIG. Arm 1
0 is rotated in the E direction and approaches the position shown in FIG.
and 12, between members 13 and 14, and between member 15
and 16, and finally at position 2
As a result, the enlarged portions 25, 26 and 27 are inserted between the members 11 on the head side of the member 11.
and 12 contact members 13 and 14 and members 15 and 16, respectively, and force member 11 against the elastic force.
and 12, members 13 and 14 and members 15 and 16 are separated, respectively, and the disks 7 of heads 17 to 22 are separated.
a, 7b and 7c are forcibly prevented from coming into contact with each other.
Therefore, even if the power is cut off, the disks 7a, 7b and 7
Even when the rotation of the head c is stopped and no air flow is generated, the heads 17 to 22 do not contact the disks 7a, 7b, and 7c, but slightly move toward the disks 7a, 7c.
It is held in a floating state from the surfaces of b and 7c. Furthermore, if the disks are transported or stored in the state shown in FIG. 2, the recording surfaces of the disks 7a, 7b, and 7c will not be damaged, and the phenomenon of close contact between the recording surfaces and the heads can be eliminated. As described above, the magnetic disk storage device 40 of this specific example includes the magnetic disks, for example, the magnetic disk 7a, and the magnetic disk 7a.
A magnetic head 17 is disposed facing one recording surface 41 of a, a plate-shaped elastic member 11 extends flat and supports the magnetic head 17 at one end, and this plate-shaped elastic member 11 is used for recording on one side. When the magnetic head 17 is set to a standby position with respect to one recording surface 41 by a rotation mechanism that rotates in a plane parallel to the surface 41 and a rotation of the plate-like elastic member 11 by this rotation mechanism, the magnetic head In order to forcibly prevent the plate-like elastic member 11 from coming into contact with one of the recording surfaces 41, the contact prevention member 24 separates the plate-like elastic member 11 from one of the recording surfaces 41. and an arm 10 whose one end is connected to the output shaft 9 of the step motor 8 and whose other end is connected to the other end of the plate-shaped elastic member 11. consists of a base 42 and an arm 28 extending parallel to one recording surface 41 from the base 42, and when the magnetic head 17 is set to the standby position, one flat surface of the plate-like elastic member 11 Surface 43
comes into contact with the enlarged portion 25, which is the tip of the arm portion 28, and the plate-shaped elastic member 11 is separated from one recording surface 41, and the magnetic head 17 is set facing the one recording surface 41 other than the standby position. At this time, the one flat surface 43 of the plate-like elastic member 11 is released from contact with the enlarged portion 25, and the one flat surface 4 of the plate-like elastic member 11 is released.
The base portion 42 and the arm portion 28 are arranged with respect to the plate-shaped elastic member 11 such that the base portion 42 and the arm portion 28 do not face the arm portion 28.

Although the above specific example describes a magnetic disk storage device having three magnetic disks, the present invention is not limited thereto, and may be applied to devices having one, two, or four or more magnetic disks. In addition, the contact prevention member may be configured without the enlarged portion.

As described above, according to the present invention, since the magnetic head can be held so as not to come into contact with the recording surface of the magnetic disk, damage to the recording surface and the magnetic head can be prevented.
Moreover, transportation and long-term storage can be carried out without any problems. Furthermore, according to the magnetic disk storage device of the present invention, the plate-like elastic member overlaps the tip of the arm for the first time when the magnetic head is set to the standby position, and when the magnetic head is set to any other position, the plate-like elastic member overlaps the tip of the arm. In this case, the contact prevention member is arranged with respect to the plate-like elastic member so that the overlap between the plate-like elastic member and the arm portion is released, and the plate-like elastic member extends flatly. A pair of plate-shaped elastic members disposed between one recording surface of one magnetic disk and one recording surface of another adjacent magnetic disk facing one recording surface of this one magnetic disk. As a result of being able to reduce the spacing, even if a large number of magnetic disks are used, it can be made thinner and more compact.

In addition, since the plate-like elastic member extends flat as described above, it can elastically support the magnetic head as desired, and the magnetic head can be pressed toward the recording surface of the magnetic disk at a predetermined distance. It is possible to improve the recording and reproducing characteristics.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a preferred embodiment of the present invention, FIG. 2 is a plan view of the embodiment shown in FIG. 1, and FIG.
This figure is a partial perspective view of the blocking member shown in FIG. 1. 7a, 7b, 7c...magnetic disk, 11-1
6... Plate elastic member, 17-22... Magnetic head, 24... Contact prevention member.

Claims (1)

[Scope of utility model registration request] a magnetic disk, a magnetic head disposed facing one recording surface of the magnetic disk, a plate-shaped elastic member extending flat and supporting the magnetic head at one end, and the plate-shaped elastic member being attached to the one end of the magnetic disk. When the magnetic head is set to the standby position with respect to the one recording surface, the rotation mechanism rotates the magnetic head in a plane parallel to the recording surface, and the plate-like elastic member is rotated by this rotation mechanism. a contact prevention member that causes the plate-shaped elastic member to separate from the one recording surface in order to forcibly prevent contact with the one recording surface;
The rotation mechanism includes a motor and an arm whose one end is connected to the output shaft of the motor and whose other end is connected to the other end of the plate-like elastic member, and the contact prevention member includes: It consists of a base and an arm extending parallel to the one recording surface from the base, and when the magnetic head is set to the standby position, one flat surface of the plate-like elastic member is placed at the tip of the arm. When the plate-shaped elastic member is separated from the one recording surface by contacting the recording surface and the magnetic head is set to face the one recording surface other than the standby position, one flat surface of the plate-shaped elastic member The base and the arm are arranged relative to the plate-shaped elastic member so that the surface is released from contact with the tip of the arm and one flat surface of the plate-shaped elastic member does not face the arm. disk storage.