JPH073507Y2 - Head support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a head support device that is most suitable for application to, for example, a floppy disk device, and more particularly to alignment of a pair of magnetic heads. It is a thing.

[Conventional technology]

The applicant of the present invention has filed an example of a prior application relating to a head support device for a floppy disc device (for example, Japanese Utility Model Application No. 61-163286).
Has filed first.

In this prior application example, a pair of screws are inserted into a pair of screw insertion holes which are fool holes provided in a leaf spring for hinges of arms, and the leaf spring is screwed by the pair of screws so that the position of the leaf spring can be adjusted on the carriage. It has been stopped.

Then, when aligning the carriage and the pair of magnetic heads attached to the tip of the arm, lightly tighten the pair of screws so that the leaf spring can slide on the carriage, and temporarily fix the leaf spring on the carriage. The pair of magnetic heads is aligned while sliding and adjusting the position. Then, after the alignment is completed, a method of finally tightly tightening the pair of screws to completely fix the leaf spring on the carriage is adopted.

[Problems to be solved by the device]

However, after the pair of magnetic heads have been aligned, when the pair of screws are finally tightened strongly, the pair of screws exerts a load in the sliding direction on the leaf spring, so that the leaf spring is unexpectedly positioned on the carriage. Easy to slip off. Therefore, there is a problem that it is necessary to reconfirm the alignment after the work is completed, and in some cases, realignment must be performed.

An object of the present invention is to provide a head supporting device capable of accurately aligning a pair of magnetic heads at one time.

[Means for Solving the Problems]

To achieve the above object, the head supporting device of the present invention comprises an arm having a first magnetic head at the tip and a leaf spring at the end, a second magnetic head at the tip, and an adhesive surface for the leaf spring at the end. And a carriage having a carriage for adjusting the position of the leaf spring on the bonding surface so as to align the first and second magnetic heads, and thereafter bonding the leaf spring to the bonding surface. In the head support device,
The carriage is characterized by including a plurality of inward grooves into which side surfaces of the leaf spring can enter.

In addition, it is preferable to provide a groove or a hole for inflow of an adhesive agent on the surface of the carriage on which the leaf spring is adhered.

[Action]

The head supporting device configured as described above adheres the leaf spring to the carriage without applying a load in the sliding direction to the leaf spring after the alignment of the pair of magnetic heads is completed. Alignment can be done accurately at once.

Further, the adhesive can easily and surely flow from the adhesive inflow groove or hole into the leaf spring bonding surface of the carriage, and the leaf spring can be easily and firmly bonded to the carriage.

〔Example〕

An embodiment of a head support device to which the present invention is applied to a floppy disc device will be described below with reference to the drawings.

First, as shown in FIGS. 4 and 5, both the carriage 1 and the arm 2 are made of synthetic resin, and the leaf spring 3 for the hinge is fixed to the end of the arm 2 by screwing or the like. ing. A pair of upper and lower magnetic heads 4 and 5 are attached to the facing surfaces of the ends of the carriage 1 and the arm 2 so as to face each other. Further, the leaf spring 3 is configured to be bonded onto the leaf spring mounting base 6 integrally formed with the carriage 1.

That is, as shown in FIGS. 1 to 4, a plurality of inward grooves into which the side surface of the leaf spring 3 can enter are formed in a pair of cross-section L-shapes at four corners on the leaf spring bonding surface 6a of the carriage 1. It is constituted by a gap 9 between the leaf spring pressing pieces 7a, 8a which are the upper end pieces of the formed four protrusions 7, 8 and the leaf spring bonding surface 6a.

Further, four protrusions 10 and 11 corresponding to the gaps 9 between the four protrusions 7 and 8 are provided on both side edges of the leaf spring 3. By making the gap 9 slightly smaller than the plate thickness of the plate spring 3, the plate spring 3 can be pressed and held on the plate spring bonding surface 6a. Further, the leaf spring adhesive surface 6a is provided with an adhesive inflow groove 12 having, for example, a cross groove shape, and an adhesive inflow port 12a is formed at one end or the like thereof.

When mounting the leaf spring 3 on the leaf spring mount 6 of the carriage 1, first, the leaf spring 3 is placed on the leaf spring bonding surface 6a from above, and the four protrusions 10, 11 of the leaf spring 3 are placed. Is held horizontally against the elasticity of the leaf spring pressing pieces 7a, 8a of the four protrusions 7, 8.

Next, the pair of magnetic heads 4 and 5 are aligned while sliding the leaf spring 3 on the leaf spring bonding surface 6a to adjust the position.

After the alignment is completed, the adhesive 14 is flowed into the adhesive inflow groove 12 from the adhesive inflow port 12a and filled by using the adhesive injecting device 13 or the like, and the leaf spring is caused by the adhesive 14. 3 is firmly bonded to the leaf spring bonding surface 6a.

Next, FIG. 5 shows the head assembly 16 after the leaf spring 3 is completely bonded onto the leaf spring mounting base 6 of the carriage 1. The head assembly 16 is attached to a floppy disk device (not shown), and a pair of magnetic heads 4 and 5 are vertically driven by a spindle motor (not shown). And the head assembly 16 is reciprocally driven in the radial direction of the floppy disk 17 via the needle 20 by the lead screw 19 which is rotationally driven by the stepping motor 18 so as to perform desired recording and reproduction. Is done.

Next, FIGS. 6 and 7 show a modified example, in which a relatively large-diameter adhesive inflow hole 22 is provided at approximately the center of the leaf spring bonding surface 6a of the leaf spring mount 6. A plurality of adhesive inflow grooves 22a are radially provided on the outer periphery thereof, and a through hole 23 is provided at substantially the center of the leaf spring 3.

In this case, after the alignment of the pair of magnetic heads 4 and 5, the ultraviolet curing adhesive 24 is applied to the through hole 23 of the leaf spring 3.
A plurality of adhesive inflow grooves 22 by injecting into the adhesive inflow hole 22 from
The adhesive 24 is filled in a so that the adhesive 24 can be cured in a short time by ultraviolet rays entering from the through hole 23.

The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various effective modifications can be made based on the technical idea of the present invention.

The present invention is not limited to the head supporting device of the floppy disc device, but can be applied to the head supporting device of the disc device for recording and reproducing various disc-shaped recording media.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

The leaf spring of the arm can be easily temporarily fixed to the carriage without using screws, etc., and the pair of magnetic heads can be accurately aligned at one time, and there is no need to reconfirm or realign the alignment after the work. The cost can be reduced and the working time can be greatly shortened.

In addition, the work of adhering the leaf spring to the carrier can be done easily,
Moreover, the leaf springs can be firmly adhered to the carrier, and have high reliability and durability.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan view of an essential part, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. III-III arrow sectional view of the figure, FIG. 4 is an exploded perspective view of the whole, FIG. 5 is a perspective view of the whole in use, FIG. 6 is a plan view of a modified example, and FIG. VII-VI in Figure 6
It is a sectional view taken along the arrow I. In the reference numerals used in the drawings, 1 ... carriage 2 ... arm 3 ... leaf spring 4,5 ... magnetic head 6a ... leaf spring adhesive surface 7,8 ... protrusion 9 ... gap 10. 11 …… Projecting piece 12 …… Adhesive inflow groove 14 …… Adhesive 22 …… Adhesive inflow hole 24 …… Adhesive.

Claims (2)

[Scope of utility model registration request] 1. An arm having a first magnetic head at the tip and a leaf spring at the end, and a carriage having a second magnetic head at the tip and an adhesive surface for the leaf spring at the end, and To align the second magnetic head,
In a head supporting device in which the position of the leaf spring is adjusted on the adhesive surface, and then the leaf spring is adhered to the adhesive surface, the carriage has a plurality of inward facing surfaces into which side surfaces of the leaf spring can enter. A head support device comprising a groove. 2. A groove or hole for inflow of an adhesive is provided on the leaf spring adhering surface of the carriage.
The head support device described.