JPS63136368A - Magnetic recording device - Google Patents

Abstract

PURPOSE:To obtain a magnetic recorder of high speed access type where the moving mass of a carriage arm is minimized by providing an actuator interlockingly having a means loading/ejecting a head elevating/descending member from/to a moving arm. CONSTITUTION:When a loading solenoid 10 is energized, a plunger 18 is driven to turn the blade 16 right around a turning end 17, then a drive post 9 is descended and removed out of a long hole 20 of the carriage arm 7. Thus, even if the carriage arm 7 is turned, the turning ring 12 does not move. On the other hand, when the loading solenoid 10 is deenergized, the plunger 18 is pushed out to turn the blade 16 to the left around the turning end 17, then the drive post 9 is lifted up and moved along the long hole 20 of the carriage arm 7. A solenoid 14 for fixing is installed on the base 3, a plunger 19 is fitted to a locking slot 15 of the turning ring 12 to fix the turning ring. Thus, the required minimum moving members only are in motion, then the light weight and high rigidity are attained and high speed seek is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording device, and particularly to a magnetic recording device suitable for a device having a function of raising and lowering a magnetic head.

[Conventional technology]

As the recording density of information data increases, the accuracy of the magnetic head and magnetic recording medium surface has become extremely high, and accidents such as the magnetic head being attracted to the magnetic recording medium (for example, a magnetic disk) during stop periods are becoming more and more difficult. The danger of Furthermore, there has been an inconvenient phenomenon in which the surface of the magnetic disk is damaged due to wear when the magnetic disk starts or stops rotating.

In order to avoid these phenomena, it is important to lift the magnetic head from the surface of a magnetic recording medium such as a magnetic disk and keep it in a non-contact state when the magnetic head is stationary.

The conventional device is 1st Nikkei Electronics '86゜&391
As described in the above issue, the head support 21 and the loading bar 22 are in a non-contact state, as shown in the positioning arm 4-a-+, where the member that acts on the head support to move the head up and down is in a non-contact state. , the loading bar 22 is fixed onto a carriage arm 23 for positioning by two coil springs.

The procedure for raising and lowering the magnetic head is that the fixed pin 24 is positioned by an actuator (not shown) on the base, the fixed solenoid 25 is turned ON, and the rotation of the loading bar 22 is restricted as shown in FIG. Head support 2 in which the bar 22 rotates to the left as shown by the arrow with respect to the carriage arm 23 and is fixed at a constant inclination angle.
1, and the magnetic head was pulled up from the surface of a magnetic recording medium such as a magnetic disk. Therefore, sufficient characteristics cannot be obtained regarding the inertial weight and vibration characteristics of the movable part.

[Problem that the invention seeks to solve]

The above-mentioned conventional technology did not give sufficient consideration to high-speed access of the magnetic head. Since the solenoid actuator is mounted on the moving carriage arm,
Since the movable part has a large inertial mass and the coil spring is also included in the movable body, residual vibrations occur during positioning of the magnetic head. Therefore, there was a problem that it was not suitable for high-speed actuators.

The present invention has been made in order to solve the problems of the prior art described above, and is a high-speed access type magnetic Its purpose is to provide recording devices.

[Means for solving problems]

In order to achieve the above object, a magnetic recording device according to the present invention has a configuration including a rotating magnetic recording device, a head support provided with a magnetic head, a movable arm to which the head support is attached, and a movable arm. In the magnetic recording device, the magnetic recording device is composed of an arm driving means, a head elevating member that acts on the head support to lift the head from the magnetic recording medium, and a base serving as a base for each of these parts. The head elevating member is connected to an actuator having means detachable from the movable arm so as to transmit the driving force of the movable arm driving means during operation to raise and lower the magnetic head; This actuator is disposed on the base side over the head elevating member.

[Effect]

In the above technical means, a member that acts on the head support to move the magnetic head up and down and a seven-cut unit that transmits or separates the driving force of the moving arm to the member are installed on the base side. are doing. As a result, only the minimum necessary movable members move during normal recording and playback, resulting in lighter weight and higher rigidity.
High-speed seek is achieved.

〔Example〕

/Q Hereinafter, one embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows a magnetic disk according to an embodiment of the present invention In FIG. 1, numeral 1 denotes a magnetic disk that is a magnetic recording medium for recording information data, and is fixed by a hub 2 of a rotating spindle motor. Reference numeral 5 denotes a magnetic head for recording and reproducing information data, and this magnetic head 5 is attached to the tip of a head support 6, which is a flexible spring member. 7 is
A carriage arm related to the moving arm, 8 is a pivot shaft, and 4 is a voice coil motor which is a driving motor for positioning the carriage arm 7. The voice coil motor 4 and the pivot shaft 8 function as means for moving the carriage arm 7. That is, a head support 6 equipped with a magnetic head 5 is attached to the tip of a carriage arm 7 that is driven to rotate around a pivot shaft 8, and is configured to perform a seek operation by this voice coil motor 4.

A long hole 20 is formed in a part of the carriage arm 7.

On the other hand, a loading plate 13 for raising and lowering the magnetic head 5 is attached to a rotating ring 12 that can rotate around a pin 11.

These bins 111 rotating ring 12. The loading plate 13 functions as a head lifting member that acts on the head support 6 to lift the magnetic head 5 from the magnetic disk 1. A loading solenoid 10 is disposed on the rotating ring 12.

Twenty-first, as shown in detail, a plunger 18 protrudes from the tip of the loading solenoid 10, and a blade 16 is slidably held by the plunger 18. The blade 16 is a plunger 18
It has a rotating end 17 at one end near the carriage arm 7, and a drive post 9 that is attached to and detached from a long hole 20 of the carriage arm 7 at the other end. That is, the loading solenoid 10 is a means (1) that can be attached and detached from the elongated hole 20 of the carriage arm 7 so that the magnetic head 5 can be raised and lowered by transmitting the driving force of the carriage arm 7 when the head raising and lowering member is operated. !!It functions as an actuator equipped with a moving post, a blade 161 rotating end 17, a plunger 18, etc.).

When the loading solenoid 10 is turned on, it retracts the plunger 18 and rotates the blade 16 clockwise around the rotating end 17, so that the drive post 9 is lowered and removed from the elongated hole 20 of the carriage arm 7. Therefore, even if the carriage arm 7 rotates, the rotating ring 12 does not move.
On the other hand, when the loading solenoid 10 is turned OFF, it pushes out the brassiere 18 and rotates the blade 16 to the left around the one-rotation end 17, causing the drive post 9 to rise and move along the elongated hole 20 of the carriage arm 7, so that the carriage arm 7 and the rotating ring 12 are structured to rotate in opposite directions.

As shown in FIG. 2, the rotating ring 12 is rotatably disposed on a base 3 via a pin 11.

The upper cylindrical portion of the rotary ring 12 is toothed on its circumference to form a locking groove 15. On the other hand, 14 is a fixing solenoid related to the fixing actuator, and this fixing solenoid 14 is installed on the base 3, and its plunger 19 is fitted into the locking groove 15 of the rotary ring 12, so that the rotary ring It is designed to be fixed.

As shown, the fixing solenoid 14 is OFF, and the rotating ring 12 is fixed by the plunger 19. On the other hand, the loading solenoid 1o is ON, the drive post 9 is lowered, and is not connected to the carriage arm 7.

After moving to the inner circumferential side of the magnetic disk l, the loading solenoid 10 is turned OFF, the drive boss fixing solenoid 14 is turned ON, and the plunger 19 moves in the direction of the arrow 30 to close the locking groove 15 of the rotary ring 12. When the carriage arm 7 is released from the fixed position, the carriage arm 7 is moved toward the outer circumferential side of the magnetic disk 1 as shown by the arrow 31.
2 and loading plate 13 rotate inward in the direction of arrow 32 in the opposite direction. When the loading plate 13 comes into contact with the head support 6, the fixing solenoid 14 is turned OFF, the plunger 19 is pushed out in the direction of the arrow 33, and the locking groove of the rotary ring 12 is 15 and fixes the rotating ring 12 so that it does not move.

Through the above series of operations, the magnetic head 5 can be lifted from the surface of the magnetic disk 1, and conversely, when the magnetic head 5 is to land on the surface of the magnetic disk 1, this is achieved by reversing the above operations. .

According to this embodiment, the loading plate 13 and the rotating ring 1, which are head elevating members, are mounted on the carriage arm 7.
2, the weight of the carriage arm can be reduced and the movable mass can be reduced, which is advantageous for high-speed access.

Furthermore, since the movement of the carriage arm 7 is used to raise and lower the magnetic head 5, the position of the magnetic head can be detected at all times, which has the effect of making it possible to operate at any desired raising and lowering speed pattern.

In the above-mentioned embodiment, a magnetic disk device in which the magnetic recording medium is a magnetic disk has been described, but the present invention is not limited to this, and the present invention is not limited to this. It is commonly applied to magnetic recording devices using recording media.

Further, the above-mentioned embodiments are merely representative examples of the head elevating member and the actuator.

Each mechanism, such as the means for attaching and detaching the carriage arm, does not preclude the adoption of other component configurations, shapes, structures, etc.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide a high-speed access type magnetic recording device in which the head elevating member is separated from the carriage arm and the movable mass of the carriage arm can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a magnetic head elevating mechanism of a magnetic disk according to an embodiment of the present invention. -Zeng? , − →. DESCRIPTION OF SYMBOLS 1... Magnetic disk, 3... Base, 4... Voice coil motor, 5... Magnetic head, 6... Head support, 7... Carriage arm, 9... Drive post, 10...Loading solenoid, 12...
rotating ring. 13... Loading plate, 14... Fixing solenoid, 15... Locking groove, 16... Blade, 1
8゜7...Afternoon Spear, Jiarm 20 Long Hole 3
Figure 7 Figure 9 Early /I Kuchiku 12 Mouth

Claims (1)

[Scope of Claims] 1. A rotary magnetic recording medium, a head support body equipped with a magnetic head, a movable arm to which this head support body is attached, a drive means for this movable arm, and a magnetic head that drives the magnetic head. In a magnetic recording device that includes a head lifting member that acts on the head support to lift it from the recording medium, and a base that serves as a base for each of these parts, the head lifting member moves the moving arm during its operation. In order to raise and lower the magnetic head by transmitting the driving force of the driving means, the moving arm is connected to an actuator having detachable means, and the actuator is connected to the base via the head lifting member. A magnetic recording device characterized in that it is disposed on the side. 2. In the device described in claim 1, the head elevating member is connected to a fixing actuator for preventing the head elevating member from moving when the head elevating member is not in operation, and the fixing actuator A magnetic recording device that is placed on a base.