JPH06176508A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To attain the miniaturization and the reduction in weight of a recording and reproducing device and to reduce a cost by moving and positioning magnetic heads with a single motor. CONSTITUTION:Lead screws 16a and 19a which respectively drive magnetic heads for 3.5 inches 6 and 7 attached to a carriage 12 and magnetic heads for 5 inches 10 and 11 attached to a cariage 14 are engaged by a timing belt 18. The rotation of the motor 16 is transmitted to the screws 16a and 19a by pullies 16b and 19b and the magnetic heads 6 and 7 and the magnetic heads 10 and 11 are moved and positioned. Thus, the miniaturization and the reduction in weight of the device are attained and a cost is reduced by driving the two FDDs with a single motor. Then, one magnetic head is moved when another magnetic head is moved, but the magnetic head is easily moved again storing the track position in a memory.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus,
In particular, the present invention relates to a recording / reproducing apparatus that rotationally drives a disk-shaped rotary recording medium to record or reproduce information on the medium.

[0002]

2. Description of the Related Art Conventionally, as a recording / reproducing apparatus used as an external storage device of computer equipment, a flexible magnetic disk, so-called floppy disk (hereinafter referred to as FD) is used.
There is a floppy disk drive (hereinafter referred to as FDD) that magnetically records or reproduces information by using the () as a recording medium. In recent years, the development of OA (office automation) devices has been particularly remarkable, and along with this, FDD as an external storage device has also made remarkable progress.
In particular, miniaturization, thinning, and large capacity of FDD are being promoted.

Under such circumstances, various types of FDs used for FDD, such as 8 inches, 5.25 inches and 3.5 inches, have been proposed and standardized, and are now widely used. .

By the way, in OA equipment, for example, word processors and personal computers, in many cases, two or more of the same FDD are used in the FDD as an external storage device. For example, in a word processor, 1
One is used to play the control program of the word processor, so-called system software, and sends the program to the main CPU of the word processor, and the other is to store and save the data such as documents created by the word processor. I am using FDD.

As an example of using two such FDDs, there is one equipped with two FDDs that use the same type of FD. An apparatus that includes a plurality of FDDs to be used and has compatibility is also proposed.

In the conventional device, as shown in FIG. 3, independent 3.5 inch FDD1 and 5 inch FDD2 are used.
The structure in which the panels are combined and attached to the panel 3 is generally used. As is well known, such an FDD is a 3.5 inch FDD.
A motor 8 for moving the magnetic heads 6, 7 with respect to D4 is provided, and the rotation shaft of the motor 8 is a lead screw 8a. The magnetic heads 6, 7 are moved by a lead pin 9a attached to a carriage 9. Let The motor 8 is a stepping motor and stops the positioning of the magnetic heads 6 and 7 at predetermined positions. Also, 5 inch FD
The magnetic heads 10 and 11 are also moved and positioned in the same manner as above.

[0007]

However, in such a configuration, two motors are required, and further, a drive circuit (not shown) for driving the motors is provided in each FD.
Since D has it, it was a major obstacle to cost reduction.

[0008]

In order to solve the above-mentioned problems, according to the present invention, there is provided a recording / reproducing apparatus in which a disk drive unit for driving each disk-shaped recording medium is provided side by side in one apparatus. The magnetic heads are moved and positioned by one motor by engaging the lead screws for moving the respective magnetic heads for recording / reproducing with respect to the medium with a timing belt or gears.

[0009]

According to the present invention, since the magnetic head for recording / reproducing can be moved and positioned by one motor, one motor is not required, and the device can be reduced in weight and size. Further, since the lead screw is provided in each magnetic head, the initial position of the magnetic head can be adjusted by a conventional adjustment method such as changing the mounting angle of the motor or changing the mounting position of the lead screw.

[0010]

Embodiments of the present invention will now be described in detail with reference to FIGS. 1 and 2. 1 is a perspective view of an essential part of an embodiment of the present invention, and FIG. 2 is a plan view thereof. The magnetic heads 6 and 7 perform recording / reproducing on the 3.5-inch FD 4, and are respectively a carriage A12 and a head arm A13.
Installed on. Similarly, the magnetic heads 10 and 11 for performing recording and reproduction on the 5-inch FD 5 are the carriage B1.
4 and the head arm B15. Motor 1
6, the rotation shaft of which is a lead screw A16a, and a timing belt pulley A16b is coaxially attached. The lead screw A16a engages with the lead pin A12a protruding from the carriage A12, and moves and positions and fixes the magnetic heads 6 and 7. A pulley B19b is coaxially attached to the other lead screw B19a, is connected to the pulley 19a by a timing belt 18, and rotates in conjunction with the rotation of the rotation shaft of the motor 16. Lead screw B
19a engages with a lead pin B14a protruding from the carriage B14 to move, position and fix the magnetic heads 10 and 11. The guide shaft A17 guides the carriage A12, and the guide shaft B20 guides the carriage B14. In addition, 3.5 inch FD4 and 5 inch FD5
Since the recording track pitches are different, the pitches of the lead screw A 16a and the lead screw B 16b are configured such that the respective magnetic heads correspond to the track pitch with respect to the rotation angle of the motor 16.

Since one motor drives a 3.5-inch FD magnetic head, a 5-inch FD magnetic head,
When one is moved for recording / reproduction, the other is also moved, but since the track position is stored in the memory, the track can be easily moved again, there is no problem. In addition, although this embodiment has been described by exemplifying the FDDs using the different FDs, the FDDs using the same FDs can of course be implemented.

[0012]

As is apparent from the above description, according to the present invention, there is provided a recording / reproducing apparatus in which a disk drive unit for driving each disk-shaped recording medium is provided side by side in one apparatus. The magnetic head that moves relative to the recording / reproducing device is moved and positioned by one motor.

As a result, the magnetic head for recording / reproducing can be moved and positioned by one motor, so that one motor is not required, and along with this, the drive circuit which has been conventionally duplicated can be omitted, and the cost can be reduced. A recording / reproducing apparatus with excellent performance can be obtained. Further, there is an effect that the size can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts showing an embodiment of a recording / reproducing apparatus of the present invention.

FIG. 2 is a plan view showing an embodiment of a recording / reproducing apparatus of the present invention.

FIG. 3 is a perspective view of a conventional recording / reproducing apparatus.

[Explanation of symbols]

 4 3.5 inch FD 5 5 inch FD 6 Magnetic head (for 3.5 inch FD) 7 Magnetic head (for 3.5 inch FD) 10 Magnetic head (for 5 inch FD) 11 Magnetic head (for 5 inch FD) 12 Carriage A 14 Carriage B 16 Motor 12a Lead pin A 14a Lead pin B 16a Lead screw A 16b Pulley A 19a Lead screw B 19b Pulley B 18 Timing belt

Claims (4)

[Claims] 1. A recording / reproducing apparatus in which a disk drive unit for driving each disk-shaped recording medium is provided in one device, and each magnetic head that moves to the recording medium to perform recording / reproduction has one motor. A recording / reproducing device characterized by being moved and positioned by means of. 2. A recording / reproducing apparatus in which a disk drive unit for driving each disk-shaped recording medium is provided side by side in a single apparatus, and a first carriage on which a first magnetic head is mounted and a second carriage on which a second magnetic head is mounted. A carriage,
A recording / reproducing apparatus comprising: a carriage driving unit that is driven by one motor to move the first carriage and the second carriage. 3. The recording / reproducing apparatus according to claim 2,
The carriage driving means includes a first lead screw rotated by a motor, a first lead pin connected to the first carriage and engaging with the first lead screw,
Recording / reproducing, comprising a second lead pin connected to the second carriage and engaging with a second lead screw, and a driving force transmitting means for transmitting a rotational driving force from the first lead screw to the second lead screw. apparatus. 4. The recording / reproducing apparatus according to claim 3,
The driving force transmitting means is a timing belt first pulley attached to the first lead screw, and a timing belt second pulley attached to the second lead screw.
A recording / reproducing apparatus comprising a pulley and a timing belt hung on the first pulley and the second pulley.