JPS62103887A - Head protecting device for floppy disc device - Google Patents

Abstract

PURPOSE:To prevent the damage of a magnetic head due to the unstable motion of a carriage by providing a stopper mechanism means which holds the terminating state of a belt pulley at the non-setting time of a magnetic recording medium, and releases the terminating state of the belt pulley at the setting time of the magnetic recording medium. CONSTITUTION:A stopper mechanism means 21 which holds the terminating state of a belt pulley 17 at the non-setting time of the magnetic recording medium and releases the terminating state of the belt pulley 17 at the setting time of the magnetic recording medium against a rotating and driving mechanism 10 is provided. With the stopper mechanism 21, the motion terminating state of a carriage 12 linked to the belt pulley 17 can be held at the non-driving time of a floppy disc device. Thereby, it is possible to fix a magnetic head 11, and a status where the magnetic head 11 receives the damage with a shock from an outside can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a head protection device for a floppy disk device that can prevent a situation where a magnetic head is damaged when a magnetic recording medium is not set.

[Technical background of the invention and its problems] As shown in FIG. 2 (plan view), a floppy disk device includes a drive mechanism 10 that rotationally drives a magnetic recording medium, a carriage 12 on which a magnetic head 11 is mounted, and a stepping device. Motor 13 is drawn. The magnetic recording medium is driven! 1 horizontal 1
0 from the outside, the clamp RI! is inserted by operating the lever 14. 415 is transferred to vJf+1 and is chucked onto the chucking hub 16 connected to the spindle motor. As a result, the magnetic recording medium is driven by the drive mechanism 10.
It will be rotated by. On the other hand, carriage 1
2 moves linearly until the magnetic head 11 reaches the magnetic recording medium set in the drive 1111 structure 10. The carriage 12 is moved by a belt pulley 17 that uses a stepping motor 13 as a driving source and converts the rotation of the stepping motor 13 into linear motion and transmits the linear motion.

Incidentally, when the magnetic recording medium is not set and the apparatus is not driven, the power supply to the stepping motor 13 is stopped, and the carriage 12 is in a stopped state. However, even in this state, the carriage 12 may move back and forth due to, for example, vibrations during transportation of the floppy disk device. At this time, as a matter of course, the belt pulley 17 and the rotating shaft of the stepping motor 13 connected to the pulley 17 are connected to the carriage 12.
It works in conjunction with. Therefore, as the carriage 12 moves unstably, a strong impact is applied to the magnetic head 11, and in the worst case, the magnetic l\\rad 1 may be damaged.

[Object of the Invention] An object of the present invention is to reliably maintain the carriage stopped state when the floppy disk device is not driven, and to prevent damage to the magnetic head due to unstable movement of the carriage. The object of the present invention is to provide a head protection device for a floppy disk device that can protect the head of a floppy disk device.

[Summary of the Invention] The present invention provides a spindle that maintains the stopped state of the belt pulley when no magnetic recording medium is set in the rotation drive mechanism, and releases the stopped state of the belt pulley when the magnetic recording medium is set. It is equipped with mechanical means.

This stopper (l) allows the carriage connected to the belt pulley to stop moving when the floppy disk device is not driven. Therefore, as a result, it becomes possible to fix the magnetic head.
It is possible to prevent damage to the magnetic head due to external impact.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a partial configuration of a floppy disk device according to an embodiment of the present invention.

As shown in FIG. 1, in the floppy disk device of the same embodiment, a gear 20 is provided on the rotating shaft of a stepping motor 13 connected to a belt pulley 17.

T! The J wheel 20 rotates twice together with the rotating shaft of the stepping motor 13. The belt pulley 17 converts the rotation of the stepping motor 13 into linear motion and transmits it to the carriage 12. When the tip of the collar 21 disposed near the bell 1 to the pulley 17 engages with a tooth, the rotational drive is stopped.

The stopper 21 is constantly engaged with the gear 20 about a predetermined fulcrum 23 by a spring 22 provided in a part of the driving mechanism 10. In addition, a magnetic recording medium (not shown) is used for driving Dul! When the mechanism 10 is set, the stopper 21 snaps into place due to the pressing force when inserting the magnetic recording medium, for example. 1120
It is configured to move away from the still,
Since the other configurations are the same as those shown in FIG. 2, the same reference numerals are given and the explanation will be omitted.

With this configuration, the effects of this embodiment will be explained. First, when a magnetic recording medium is inserted into the drive mechanism 10 from the outside, the clamping machine groove 15 is operated by operating the lever 14, and the magnetic recording medium is chucked onto the dissecting hub 16 connected to the spindle motor. As a result, the magnetic recording medium is rotationally driven by the drive mechanism 10. On the other hand, the stepping motor 13 is driven, and the keys 12 move linearly onto the magnetic recording medium set in the drive machine 11 to the position where the n air head 11 reaches. The stopper 21 is moved to a position where the gear 20 follows, for example, by a pressing force of 1Φ of the magnetic recording medium by a person.

The carriage 12 is moved by a belt pulley 17 that converts the rotation of the stepping motor 13 into linear motion and transmits the linear motion. At this time, the gear 20 rotates together with the rotating shaft of the stepping motor 13.

Next, when the magnetic recording medium is taken out from the drive mechanism 10, the stopper 21 is moved by the restoring force of the spring 22.

Move to engage the south of South Central 20. This results in
The gear 20 is kept from rotating by the stopper 21. In this case, when the power supply to the stepping Tanabata 13 is stopped, the carriage 12 stops moving. At this time, a force that moves the carriage 12 back and forth is applied, for example, when a floppy disk device is transported. However, since the gear 20 is kept in a stopped state, the belt pulley 17
and a stepping device connected to this pulley 17
The carriage 12 is connected to the belt pulley 17, so the carriage 12 is connected to the belt pulley 17.
The movement stop state will be maintained. Therefore, even if vibration is applied from the outside, the carriage 12 does not move in the front-rear direction.

In this way, when the magnetic recording medium is not set in the drive device (lio), the stopper 21 stops the rotation of the gear 20, so that the carriage 12 is kept in a stopped state. Carriage 12
It is possible to prevent a situation in which the body moves in the front-back direction due to external vibrations or the like. Further, when setting a magnetic recording medium, the stopper 21 is separated from the gear 20 and the carriage 12
Cancels the stoppage of movement.

Therefore, the carriage 12 can move linearly in the front and rear directions in accordance with the driving of the stepping motor 13.

Effects of the Invention 1 As detailed above, according to the present invention, 1. When the floppy disk device is not driven, the carriage is reliably kept in a stopped state, and the carriage is prevented from becoming unstable due to external photography, etc. This can prevent situations such as moving back and forth. Therefore, due to the unstable movement of the carriage 12,...
It is possible to prevent the magnetic head 11 from being damaged due to impact being applied to the head 11. Furthermore, since the position of the carriage can be fixed when the device is not driven, it is possible to improve the degree of positioning of the magnetic head when the device is driven.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a partial structure of a floppy disk device according to an embodiment of the present invention, and FIG. 2 is a plan view showing a partial structure of a conventional floppy disk device. 10...1 drive, 11...Magnetic head, 12...
・Carriage, 13...Stepping motor, 17・
...Bell 1-Pulley, 20...Gear, 21...Stopper. Applicant's agent Patent attorney Takehiko Suzu Figure 1 Figure 2

Claims (1)

[Claims] A carriage that moves a mounted magnetic head to a magnetic recording medium set in a rotation drive mechanism, a stepping motor that serves as a driving source for this carriage, and a belt that converts the rotation of this stepping motor into linear motion and transmits it to the carriage. A pulley, and a stopper mechanism means for maintaining the belt pulley in a stopped state when the magnetic recording medium is not set with respect to the rotational drive mechanism and releasing the stopped state of the belt pulley when the magnetic recording medium is set. A head protection device for a floppy disk device.