JPS63103481A - Magnetic disk recording and reproducing device - Google Patents

Abstract

PURPOSE:To curtail the number of parts, and also, to absorb the backlash of an arm by a simple structure, by placing a groove part and a notch part of the arm on a groove part of a slider bending part, as an arm holding structure, and thereafter, stretching and racking a spring. CONSTITUTION:A magnetic head 13 is fixed to the upper part of one end of a slider 25 by an adhesive agent. A groove part 30 and a notch part 31 of a bending part 32 of an arm 26 are placed between the upper groove parts 27 of a bending part 28 of the slider 25, and thereafter, a spring 34 is stretched and racked between spring detaining hole parts 29, 33 of the slider 25 and the arm 26. In this way, the arm 26 is held so as to be freely turnable, and also, a prescribed pressure force to the magnetic head 13 can be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a magnetic disk recording/reproducing device used in various office automation equipment.

2. Description of the Related Art A structure for holding an arm to a slider of a mechanism for feeding a magnetic field to a magnetic disk in a conventional magnetic disk recording/reproducing apparatus will be explained with reference to FIG. In the figure, a magnetic head 13 is disposed on the lower surface of a magnetic disk 7 set at a recording/reproducing position by a loading mechanism, and a band 16 is brought into contact with the magnetic head 13 at a position facing the magnetic disk 7 across the magnetic disk. It is located.

The magnetic head 13 is fixed to the top of one end of the slider 17 with adhesive.

The other end of the slider 17 has a hole 18 on the central coaxial line.
A side wall 19 has a spring locking protrusion 1 behind the side wall 19.
72L is formed.

On the other hand, the pad 16 is held at one end of an arm 20, and the other end of the arm 20 has a hole 21 on the same axis and a spring tension recess 22 near the hole 21. is formed.

Here, the arm 20 is inserted between the side walls 19 of the slider 17.
, and on the coaxial line, connect the metal shaft 23 to each hole 18 , 2
1, a spring 24 is stretched halfway between the metal shafts 23, the arm 20 is rotatably locked to the slider 17, and a predetermined pressing force against the magnetic head 13 is secured by the spring 24. It had a structure that

Problems to be Solved by the Invention However, in the arm holding method using the above structure, it is necessary to suppress the play of the arm as much as possible in order to ensure that a predetermined part of the magnetic head is pressed by the pad attached to the tip of the arm. High accuracy was required in the dimensions between both walls of the slider and between both ends of the arm.

Further, in order to hold the arm rotatably, the arm is disposed between both walls of the slider, and then a metal shaft is passed through and locked therein.

As a result, it has the disadvantage of being unstable in terms of man-hours and quality.

The present invention has been made in view of the drawbacks of the conventional example, and provides a magnetic disk recording device that eliminates the metal shaft and enables a simple and low-cost arm holding structure that only involves fitting and locking the arm and slider. The purpose is to provide a playback device.

Means for Solving the Problems In order to achieve the above object, the magnetic disk recording and reproducing apparatus of the present invention includes a groove portion formed above both bent portions of the slider in the arm holding portion on the slider of the magnetic head feeding mechanism. , an arm having a recess corresponding to the thickness of the bending member at one end and a spring locking hole near the recess is rotatably locked in the groove, and a gap is formed between the spring locking hole and the slider. It has a structure in which a spring is stretched.

Effect: By having the above configuration, the structure is simple and costs can be reduced.

Example Embodiments of the present invention will be described below with reference to the drawings.

First, the overall structure of a magnetic disk recording/reproducing apparatus will be explained with reference to FIG.

In FIG. 1, 7 is a magnetic disk for recording and reproducing information, and 8 is a magnetic disk cartridge that rotatably supports and stores the magnetic disk 7.

Reference numeral 9 denotes a loading mechanism for setting the magnetic disk cartridge 8 to the recording or reproducing position of the main body of the apparatus.

A magnetic disk rotation drive mechanism 10 rotates the magnetic disk 7, and is driven by a motor 11 via a belt 12.

A magnetic head 13 is placed in contact with the surface of the magnetic disk 7.

Reference numeral 14 denotes a magnetic transport mechanism for moving the magnetic disk 13 in the radial direction of the magnetic disk 7.

Reference numeral 15 indicates a control for recording or reproduction on the magnetic disk 7 by the magnetic helad 13, and a magnetic disk rotation drive mechanism 10.
This is a control circuit section composed of an electric circuit that controls the magnetic heald feeding mechanism 14.

The operation of the magnetic disk recording/reproducing apparatus configured as described above will be described below.

First, the magnetic disk cartridge 8 is set at the recording/reproducing position of the main body of the apparatus by the loading mechanism 9.

Next, the magnetic disk 7 is rotated by the magnetic disk rotation drive mechanism 1Q.

Then, the magnetic head 13 is moved in the radial direction of the magnetic disk 7 by the magnetic head transport mechanism 14 and comes to rest at a predetermined recording or reproducing position.

Next, according to the electric signal from the control circuit section 15, the magnetic helad 13
Through this, information is recorded and reproduced on the magnetic disk 7.

In the above configuration, the present invention is characterized by the arm locking structure on the slider of the magnetic head feeding mechanism.

This point will be explained below using FIG. 2.

A magnetic helad 13 is arranged on the lower surface of the magnetic disk 7 set at the recording/reproducing position by the loading mechanism 9, and a pad 16 is arranged so as to come into contact with it at a position opposite to it with the magnetic disk 7 interposed therebetween. .

The magnetic pad 13 is fixed to the top of one end of the slider 25 with adhesive. The other end of the slider 25 has a bent part 28 with a groove 27 formed in the upper part for engaging the arm 26, and a spring locking hole 29 on the lower surface near the bent part 28.
is formed.

On the other hand, the hat 16 is held at one end of an arm 26, and the other end of the arm 26 is provided with a groove 30 having a thickness equivalent to the material thickness of one bent portion 28 of the slider 25. On the other hand, a bent part 32 having a notch 31 having the same height as the upper end of the groove part 3o, and a spring locking hole 33 are formed near the bent part 32.

Here, the groove portion 2 above the bending portion 28 of the slider 25
7 between the groove 3o and the notch 3 of the bent portion 32 of the arm 26.
1 and the spring 34 is stretched between the slider 25 and the spring locking holes 29 and 33 of the arm 26 to hold the arm 26 rotatably.
The structure is designed to ensure a predetermined pressing force.

Effects of the Invention As described above, the magnetic disk recording/reproducing device of the present invention does not use a metal shaft as an arm holding structure, but instead places a groove and notch of the arm on the groove of the slider bending portion, and then tensions the spring. This has great practical value, such as reducing the number of parts and absorbing arm play with a simple structure.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of a magnetic disk recording and reproducing apparatus according to the present invention, FIG. 2 is an exploded perspective view of essential parts showing an embodiment of the invention, and FIG. 3 is a perspective view of essential parts showing a conventional example. . 7... Magnetic disk, 8... Magnetic disk cartridge, 9... Loading mechanism,
10. Old... Magnetic disk rotation drive mechanism, 11...
...Motor, 12...Belt, 13...
・Magnetic head, 14...Magnetic head feeding mechanism,
15...Control circuit section, 25...Slider, 26...Arm, 28.Old...Bending part, 2
7...Groove, 3o...Groove, 31...
...Notch part, 32...Bend part, 33.29
・Old... Spring locking hole, 34... Spring. Name of agent: Patent attorney Toshio Nakao Haga 1st person
ID motor belt

Claims (1)

[Claims] In the arm holding portion on the slider of the magnetic head sending mechanism, grooves are formed above both bent portions of the slider,
An arm having a recess corresponding to the thickness of the bending member at one end and a spring locking hole near the recess is rotatably locked in the groove, and one end of the spring is inserted into the spring locking hole. A magnetic disk recording/reproducing device characterized in that the other end of the spring is stretched between spring locking holes on the lower surface near the bent portion of the slider.