JPS61188777A - Magnetic disc recording/reproducing device - Google Patents

Abstract

PURPOSE:To reduce the thickness of the device by constituting the device so that the thickness of the magnetic disc recording/reproducing device is not restricted with the pressing arm. CONSTITUTION:By the insertion of a cartridge 1, a cam lever 9a moves reverse direction against the cartridge 1 unloading direction. At this moment, a pressure arm 3 makes rotation and straight motion by the recovering power of flexible part material A10 and B11. Therefore, insertion action of the cartridge 1 is done in the reverse order of unloading action. Thus, by designing the pressure arm 13 so that it may escape to the lower position than the upper surface of the cartridge at the time of insertion, the movement space of the arm 3 towards the thickness direction of the magnetic recording/reproducing device can be made smaller than conventional device.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to magnetic disk recording and reproduction for recording and reproducing information.
It is a playback device.

Conventional technology In recent years, floppy disks have become popular as external storage devices for computers.
Demand for magnetic disk recording/playback devices such as disk devices is rapidly increasing.

A conventional magnetic disk recording/reproducing device is shown, for example, in ``The Latest Floppy Disk Device and its Application Know-No-1'' (written by Shoji Takatsuka). - An example of a playback device will be explained.

Figures 7, 8, and 9 show conventional magnetic disk recording.
FIG. 2 is a schematic diagram of a playback device. FIG. 7 shows the state when no one is inside. At this time, the pressure arm 18 facing the magnetic head 17 mounted on the head carriage 16 rotates around one end of the cartridge holder 16 protruding from one end so as not to prevent the cartridge 14 from being inserted.
It is supported by <-1e. When inserting the cartridge 14, after a first operation in which the cartridge 14 is inserted while maintaining an attitude substantially perpendicular to the axis of the spindle shaft 2° driven by the disk drive motor, the cartridge 14 is inserted into a predetermined position. Then, the cartridge 14 is moved by the support stand 21 in a direction substantially parallel to the axis of the spindle shaft 2-00, and at the same time, the loading plate 22 is moved in the opposite direction to the direction in which the cartridge 14 is inserted, and The pressure arm 18 is rotated toward the magnetic disk.

Thereafter, as shown in FIGS. 8 and 9, the cartridge 14 records information between the cartridge 14 and the magnetic disk 14a.
The pressurizing arm 1 is installed in a state where it can be regenerated, and at that time the pressure arm 1
Reference numeral 8 brings the magnetic disk 14a into contact with the magnetic head 17 while applying constant pressure.

Further, the cartridge 14 can be removed by moving the loading plate 22 in the same direction as when the cartridge 14 was inserted.
The insertion process is performed through a process that is the reverse of the process of insertion.

The loading plate 22 maintains the state in which the cartridge 14 has been removed until the cartridge 14 is newly inserted.

Problems to be Solved by the Invention However, in a structure in which the pressure arm 18 rotates about one end during the loading operation for inserting and removing the cartridge 14, the pressure The rotational movement range of the pressure arm 18 is located above the movement range of the cartridge receiver 16. Therefore, the thickness of the main body of the magnetic disk recording/reproducing apparatus is limited by the highest position of the pressure arm 18, that is, the height at which the tip of the pressure arm is located.

Therefore, when trying to make the main body of a magnetic disk recording/reproducing apparatus thinner in the future, it becomes a problem to retract the pressure arm 18 above the movement space of the cartridge 14 during the loading operation of the cartridge 14.

In view of the above problems, the present invention attempts to reduce the thickness of the magnetic disk recording/reproducing apparatus by changing the retraction position of the pressure arm 18 that limits the thickness of the magnetic disk recording/reproducing apparatus. be.

Means for Solving the Problems In order to solve the above problems, the magnetic disk recording/reproducing apparatus of the present invention includes a head carriage equipped with a magnetic head, a pressure arm facing the magnetic head, and a disk. Insert the drive motor, the spindle shaft driven by the disk drive motor, and the top surface of the cartridge, which rotatably houses a magnetic disk, while maintaining an orientation almost perpendicular to the axis of the spindle shaft. After the first operation, the cartridge is moved from a predetermined position in a direction substantially parallel to the axis of the spindle shaft, thereby making it possible to record and reproduce information from and to the magnetic disk. A magnetic disk recording/reproducing device comprising a loading device section for positioning the magnetic disk in a state,
The pressure arm has a plane including a top plane of the cartridge when the cartridge is inserted during a first operation of the cartridge, and a plane above the cartridge when the cartridge is installed in a state where information can be recorded and reproduced. It is characterized in that it is located in a space between a plane including a plane, and is not within the movement range of the second operation of the cartridge.

Function: Due to the above-described features of the present invention, the thickness of the main body of the magnetic disk recording/reproducing apparatus is not limited by the pressure arm. That is, the thickness of the main body of the magnetic disk recording/reproducing apparatus can be reduced by the amount of protrusion in the thickness direction of the rotary movement space of the pressurizing arm, which conventionally protrudes above the movement space of the cartridge. I can do it.

Embodiment Hereinafter, a magnetic disk recording/reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram of a magnetic disk recording/reproducing apparatus according to an embodiment of the present invention, and shows information recording/reproducing apparatus with respect to a magnetic disk.
Indicates a state in which playback is possible.

A pressure arm 3 facing the magnetic head 2 via a magnetic disk 1a built in the cartridge 1 is fixed to one end surface of a cylindrical arm support 5 whose rotational symmetry axis is held parallel to the spindle axis 4. has been done. A cam 7 fixed near the arm support 6 of the head carriage 6 equipped with the magnetic head 2 engages with a pin 8 protruding from the cylindrical side surface of the arm support 6. It serves as a guide for linear movement in the direction of the rotational symmetry axis and rotational movement around the rotational symmetry axis. The loading plate 9 is provided with a cam lever 9a that engages the pin 8 and causes the arm support 6 to move linearly and rotationally.

The elastic member A10 applies a rotational force to the pressure arm 3 using the arm support 6 as a rotation axis. The second is a sectional view of the arm support 6, in which the pressure arm 3 is urged toward the head carriage 6 by an elastic member B11.

The operation of the magnetic disk recording/reproducing apparatus configured as described above will be explained below with reference to FIGS. 3, 4, 5, and 6.

FIG. 3 is a schematic diagram showing the surroundings of the magnetic disk 1a and the pressure arm 3 when recording and reproduction are possible. First, the operation when taking out the cartridge 1 from the state shown in FIG. 3 will be described. The loading plate 9 having the cam lever 9a is moved toward the pin 8 parallel to the upper plane of the cartridge 1.

At this time, the cam lever 9a first moves the primary arm support 6 linearly in the direction of the rotationally symmetrical axis at the position fA in the space of aging.

Subsequently, as shown in FIG. 4, the arm support 6 is rotated about the axis of rotational symmetry. The cam lever 9a moves to a predetermined position, and as shown in FIG. 6, the pressurizing arm 3 performs the rotational movement until it reaches a position where movement in a direction substantially parallel to the axis of the spindle shaft 4 cannot be prevented. At this time, as the cam lever 9a continues to move, the cartridge 1 moves in a direction substantially parallel to the axis of the spindle shaft 4 in addition to the rotational movement of the pressurizing arm 3. After these movements, the state shown in FIG. 6 is finally reached, and the removal of the cartridge 1 is completed.

When the cartridge 1 is inserted, the cam lever 9a moves in the opposite direction to the direction of movement when the cartridge 1 is removed. At that time, the pressure arm 3 is connected to the elastic member A10 and the elastic member B1.
Rotational movement and linear movement are performed by the restoring force of 1. Therefore, the insertion operation of the cartridge 1 is performed through the reverse process of the removal operation.

As described above, the pressure arm 3 is connected to the cartridge 1.
During the loading operation, linear movement and rotational movement are performed in a series of operations accompanying the loading operation, and by retracting the cartridge 1 below the upper surface of the cartridge 1 when the cartridge 1 is inserted, the magnetic The movement space of the pressurizing arm 3 in the thickness direction of the magnetic disk recording/reproducing apparatus main body is made small so that the thickness of the magnetic disk recording/reproducing apparatus main body is not limited by the pressurizing arm 3. Therefore, the thickness of the main body of the magnetic disk recording/reproducing apparatus can be reduced and the thickness of the magnetic disk recording/reproducing apparatus can be reduced.

As is clear from the detailed description of the invention, according to the present invention, the pressurizing arm moves between a plane including the upper plane of the cartridge when the cartridge is inserted during the first operation of the cartridge, and a plane where the cartridge records information. The magnetic disk The thickness of the recording/reproducing device main body is not limited by the pressure arm, and can be made thinner.

[Brief explanation of drawings]

FIG. 1 is a schematic side sectional view of a magnetic disk recording/reproducing apparatus according to an embodiment of the present invention, and FIG.
The enlarged cross-sectional view of the pressure arm support part of the playback device, FIGS. 3, 4, 5, and 6 are for the magnetic disk recording and
A schematic side view of the vicinity of the pressure arm showing the cartridge loading operation of the playback device; FIGS. 7, 8 and 9 are side views showing the schematic configuration of a conventional magnetic disk recording/playback device, respectively; They are a sectional view and a top view. 1... Cartridge, 1a... Magnetic disk, 2... Magnetic head, 3... Pressure arm, 4... Spindle shaft, 6...
・Arm support, 6...Head carriage, 7
...Cam, 8...Pin, 9...
・Low f ink plate, 9a...Cam lever, 1°...Elastic member A, 11...Elastic member B112...Cartridge holder, 13...
...Support stand. Name of agent: Patent attorney Toshio Nakao and 1 other person3-
h Pressure arm IQ - One stroke member A7 - Cam Fig. 2 Fig. 3 Fig. 5 Fig. 6

Claims (4)

[Claims] (1) A head carriage equipped with a magnetic head, a pressure arm provided facing the magnetic head, a disk drive motor, a spindle shaft driven by the disk drive motor, and a magnetic disk inside. A first cartridge into which the upper surface of the rotatably built-in cartridge is inserted while maintaining an attitude substantially perpendicular to the axis of the spindle shaft.
After the operation, a second step moves the cartridge from a predetermined position in a direction substantially parallel to the axis of the spindle shaft.
and a loading device section that positions the magnetic disk in a state where information can be recorded/reproduced by the operation of the pressurizing arm. located in a space between a plane including the upper plane of the cartridge and a plane including the upper plane of the cartridge when the cartridge is installed in a state in which information can be recorded and reproduced, and that is A magnetic disk recording/reproducing device characterized in that it does not exist within a moving range. (2) The pressurizing arm is capable of rotational movement about an axis substantially parallel to the axis of the spindle shaft and linear movement substantially parallel to the axis. The magnetic disk recording/reproducing device described in (1). (3) The magnetic disk recording/reproducing apparatus according to claim (2), wherein the operation of the loading device section and the movement of the pressurizing arm are performed in conjunction with each other. (4) A cylindrical arm support whose rotational symmetry axis is held parallel to the spindle axis and a pressure arm fixed to one end surface, a pin protruding from the cylindrical side of the arm support, and the arm support. a cam fixed on a head carriage near the body, engaged with the pin, and serving as a guide during linear movement of the arm support in the direction of the rotational symmetry axis and rotational movement around the rotational symmetry axis; The arm support is a rotating shaft body, and includes an elastic member that applies rotational force to the pressure arm, an elastic member that biases the pressure arm toward the head carriage, and a lever portion that engages with the pin. A magnetic disk recording/reproducing apparatus according to claim (2), further comprising a loading plate.