JPH0240616Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications This invention relates to a magnetic recording device.

BACKGROUND ART Conventionally, a cover that holds a case containing a magnetic disk is rotatably attached to a base that holds a spindle and a magnetic head, and the cover is biased in the opening direction when the case is inserted or removed. A structure in which the cover is maintained in an open state and the cover is locked in a closed state by a locking device during reading or writing is often used.

Problems to be Solved by the Invention However, this type of device has a complicated structure because the cover is locked by a locking device. Further, since this locking device cannot directly fix the case, it is not possible to accurately determine the relative position of the magnetic disk with respect to the spindle or magnetic head. Therefore, there is a problem that read errors or write errors occur.

This idea was developed in consideration of these points.The case containing the magnetic disk can be fixed together with the cover, simplifying the structure, and preventing read and write errors by accurately positioning the magnetic disk. The purpose of the present invention is to provide a magnetic recording device that can prevent the above problems.

Means for Solving the Problem This invention is a case in which a cover 14 is rotatably attached to a base 1 holding a spindle 5 and a magnetic head 9, and a magnetic disk 17 is housed therein. 18 is made of a magnetic material, and permanent magnets 20 are positioned on both sides of the spindle 5 and fixedly provided on the base 1 side.

Function: Therefore, when the case 18 is attached to the cover 14 and the cover 14 is closed, the case 18 is attracted to the permanent magnet 20, and the cover 14 is also locked in the closed state. Further, the case 18 is directly positioned and fixed to the permanent magnet 20.

Embodiment An embodiment of this invention will be described based on the drawings.
A flat gear case 2 is attached to the upper surface of a box-shaped base 1 with an opening on one side, a support shaft 3 is erected, and hinge pieces 4 are formed on both sides of the rear part. A spindle 5 directly connected to a motor (not shown) built into the base 1 is supported at one end of the gear case 2 . A gear group 6 driven by the aforementioned motor is housed inside the gear case 2, and a final gear 7 thereof is exposed through a cutout 8 of the gear case 2. A movable body 10 holding a magnetic head 9 is rotatably attached to the support shaft 3.
This movable body 10 is formed with a fan-shaped gear 11 that meshes with the final gear 7, and a load arm 12 is attached to the movable body 10 so as to be biased downward and rotatable about a pin 13.

Next, cover 14 is opened on the front and bottom sides.
is rotatably attached to the hinge piece 4 by a pin 15, and the cover 14 is urged in the opening direction by a spring 16. A case 18 that houses the magnetic disk 17 is made of a magnetic material such as an iron plate. A frame portion 19 that supports the front edge and both sides of the case 18 from below is integrally formed with the cover 14. Permanent magnets 20 supporting the case 18 are located on both sides of the spindle 5 and are fixedly provided on the base 1 side.

In such a configuration, the case 18 is attached to the frame portion 1.
9 and closes the cover 14 against the force of the spring 16, the magnetic disk 17 is connected to the spindle 5, and this state is maintained by the magnetic coupling between the permanent magnet 20 and the case 18, and the cover 14 is also closed. remains locked. In this way, by simply attracting the case 18 with the permanent magnet 20, the case 1
Since it is possible to lock not only cover 8 but also cover 14,
The number of parts is small and the structure can be simplified.

Data processing transmits the rotation of the motor to the spindle 5 and the final gear 7 to the movable body 10, which rotates the magnetic disk 17 and drives the magnetic head 9.
Do this by moving. At this time, the case 18 is held with some play with respect to the cover 14, but when it is attracted to the permanent magnet 20, the distance from the spindle 5 and the magnetic head 9 is directly determined by the permanent magnet 20, and thereby, It is possible to prevent errors from occurring during reading and writing.

Effects of the invention Since this invention is configured as described above, the case containing the magnetic disk can be attracted by a permanent magnet and the cover can be locked in the closed state.
This reduces the number of parts and simplifies the structure for locking the cover.Furthermore, by directly fixing the case with a permanent magnet,
It is possible to determine the relative position of the magnetic disk with respect to the spindle and the magnetic head, and therefore has the advantage of being able to read or write accurately.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
The figure is a side view with a part of the cover cut away, FIG. 2 is a plan view of the base, and FIG. 3 is a perspective view with a part of the cover cut away. DESCRIPTION OF SYMBOLS 1...Base, 5...Spindle, 9...Magnetic head, 14...Cover, 17...Magnetic disk, 18...Case, 20...Permanent magnet.

Claims (1)

[Scope of utility model registration request] A spindle connected to a motor is protruded from one side of the base, a magnetic head is movably provided along one side of the base, and a cover that holds a flat case containing a disc-shaped magnetic disk is attached in the opening direction. At least a portion of the case is formed of a magnetic material, and permanent magnets supporting the case are located on both sides of the spindle and fixedly provided on the base side. A magnetic recording device characterized by: