JPS6236791A - Head supporting mechanism - Google Patents

Abstract

PURPOSE:To eliminate the variance of position between a head and a recording medium as well as the uneven shift timing of an arm, by incorporating a pair of head supporting arms to the same head carriage and then fixing them to the carriage via the 2nd plate spring. CONSTITUTION:A pair of head supporting arms 6 and 7 are incorporated to the same head carriage 15 and fixed there via the 2nd plate springs 6b and 7b respectively. Thus the mutual position variance is reduced between surfaces 15a and 15b of the carriage 15 where the projections 6a and 7a of both arms 6 and 7 which are energized by the coil springs 10 and 11 respectively. The positions where both heads 2 and 3 move toward a recording medium 1 are decided by the contact between the projections 6a and 7a and the surfaces 15a and 15b. This reduces the variance between the positions where the heads 2 and 3 move toward the medium 1 which is due to the mutual attachment accuracy between both carriages 8 and 9 can be reduced. Thus the even position is easily secured between the heads and the recording medium. Then it is possible to secure more even pressing force when both heads 2 and 3 are pressed to the medium 1.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to writing and/or reproducing devices such as flexible disk devices for writing information to a recording medium or reading information recorded in a recording medium. This invention relates to a head support mechanism that supports a head having one or both of the functions and positions the head to a target position on a recording medium.

[Prior art]

4 and 5 show a head support mechanism of a conventional flexible disk device.

In the figure, numeral 1 is a recording medium, 2.3 is a head, and 4.
5 is a leaf spring, and the head 2.3 is attached to each of the leaf springs. Reference numeral 6.7 is a head support arm, to which the leaf springs 4 and 5 are attached, and the head 2.3 is supported via the leaf springs. 6a, 7a
6b and 7b are leaf springs attached to the arm 6.7, and 6e* is a projection provided on the arm 6.7.
7c is the above-mentioned leaf spring 6b of the above-mentioned arm 6.7;
A rising portion protruding near 7b; 7d is the arm 7;
This is a low extension near the protrusion 7a.

8.9 is a carriage in which the arm 6.7 described above is incorporated. 8a and 9a are provided on the aforementioned carriage 8°9:
ii.Protrusion 10.11 is a coil spring. These coil springs 10.11 bias the arm 6 and carriage 8, and the arm 7 and carriage 9, against each other, so that the protrusions 6a and 8&, and the studs 7& and 9& are pressed against each other. Reference numerals 12 and 13 are screws, and the screws connect the arm 6.
, 7 are fixed to the carriages 8, 9 via leaf springs 6b, 7b. 14 is a screw that connects the carriages 8.9 to each other. The above-mentioned rising portion 6c.

7c are arranged so as to overlap each other at positions shifted from each other in the longitudinal direction of the arm 6.7.

In the conventional head support mechanism constructed as described above, the head support arm 6.7 is biased by coil springs 10 and 11, and the projections 6a and 7m are connected to the projections 8a and 9m of the carriage 8.9, respectively. is in contact with. This contact determines the position of the head 2.3 in the direction toward the recording medium 1, that is, in the height direction (one direction is indicated by arrow 2). Further, each of these heads 2.3 is the head 2.6.

When the recording medium 1 is mounted, the extension 7de of one arm 7 is pressed in the direction of the arrow 2. When lifted, the arm 7 is moved by the deflection of the leaf spring 7b against the coil spring 11, and due to this movement, the rising portion 7c of the arm 7 kicks the rising portion 6e' of the other arm 6, and thereby Arm 6
is moved by the deflection of the leaf spring 6b against the coil spring 10, and the head 2.3 moves upward and downward in the figure.

[Problem that the invention seeks to solve]

In the conventional head support mechanism as described above, the arms 6 and 7 are arranged in such a way that the movement of the arm 7 causes the rising portion 7c of the arm 7 to rise from the rising portion 6ct of the other arm 6, thereby causing the arm 6 to move. is linked, but arm 7
In order to equalize the timing of the movement of arm 6 due to the movement of , when attaching arm 6゜7 to carriage 8.9,
And when these carriages 8.9 are connected to each other, highly accurate positioning is required in order to accurately determine the relative position of the upright parts 6c and 7c, which is not suitable for mass production. Point or heat nine. Man, the arm 6
．． The heightwise position of the carriages 8 and 9 is determined by the positions of the protrusions 3a and 9a, but in order to make the relative positions of these protrusions 8a and 9m uniform, it is necessary to The problem was that it required highly accurate positioning and was not suitable for mass production. If the position of the arm 6.7 is not uniform in the height direction, the pressing force when the head 2.3 comes into pressure contact with the recording medium 1 will be non-uniform.

This invention was made to solve these problems, and provides a head support that can easily achieve uniformity in the timing of interlocking arms and also can easily achieve uniformity in the position of the arms in the height direction. The purpose is to obtain a mechanism.

[Means for solving problems]

The head support mechanism according to the present invention includes separate head support arms to which a pair of heads are respectively attached, and these head support arms are incorporated, and one end of each is fixed via each separate leaf spring. A head carriage, separate elastic members for biasing the head carriage and the head support arm into pressure contact, and rising portions provided on both of the head support arms and arranged so as to overlap with each other. The head carriage and the head support arm are brought into contact with each other by the urging force of the elastic member to determine the height position of the head relative to the recording medium;
By moving one of the head support arms away from the other head support arm, the front ♂α rising portion of one head support arm kicks the rising portion of the other head support arm, and In a structure in which these head support arms are configured to interlock with each other so that the other head support arm also moves away from one head support arm, the pair of head support arms are all identical to the head carriage. The head support arm is fixed to the head carriage via the leaf spring.

[Effect]

In this invention, since the pair of head support arms described above are incorporated into the same head carriage and fixed to the head carriage via a leaf spring, the head support arms biased by the elastic member Each of them is brought into contact with the same head carriage described above, and this contact causes
Positional force of the head in the direction toward the recording medium; determined;
For this reason, compared to the case where each head support arm has a separate head carriage as described above, the attachment of these separate head carriages to each other requires precision, and the direction of the recording medium of the head is increased. Variations in the position in the direction are reduced, and the position can be easily made uniform. Further, by moving one of the head support arms away from the other head support arm,
The above-mentioned rising portion of one head support arm overlaps the rising portion of the other head support arm, and as a result, the other head support arm also moves away from the one head support arm, but these head support arms Is it built into the same head carriage and has a leaf spring? Since the head carriage is fixed to the head carriage via the head support arm, compared to the case where each head support arm has a separate head carriage as described above, the precision of attaching these separate head carriages to each other is improved. Variations in the positions of the upright portions of the pair of head support arms described above are thereby reduced, and the positions can be easily made uniform. The above-mentioned timing of movement can be made uniform.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, numerals 1 to 7 and 10 to 16 are the same as those described with reference to FIG. 4 or 5. 15 is a head carriage, 16.17 is fixed integrally with the carriage 15, and the coil spring 10.1 is fixed integrally with the carriage 15.
The number 1 is part.

In the head support mechanism configured as described above, contact between the recording medium 1 and the head 2.6 and the recording medium 1
The operations of the head 2.6 and the head support arm 6.7 during installation are similar to the conventional head support mechanism described with reference to FIGS. 4 and 5 above.

The pair of head support arms 6.7 described above are incorporated into the same head carriage 15 and are connected to the second leaf springs 6b, 7b.
Since it is fixed to the carriage via ft, compared to the case where a separate carriage 8.9 is provided for each arm 6.7 as in the above-mentioned conventional one, the position of the protrusions 8m and 9a varies. , p by said coil spring 10.11
Variations in the mutual positions of the surfaces 15a, 15b of the carriage 15 with which the protrusions 6m, 7a of the biased arm 6.7 come into contact are reduced. The protrusion 6 of the arm 6°7 mentioned above
m, 7a and surface 15a of carriage 15.

15b, the recording medium 1 of the heads 2 and 6
For this reason, as in the above-mentioned conventional arrangement, each arm 6.
9, each of these separate carriages 8
．． 9. Due to the precision of mutual attachment, the ballast Φ of the position of the head 2.3 in the direction toward the recording medium 1 is reduced, and the position can be easily made uniform. The pressurizing force when .3 is pressed becomes more uniform.

In addition, since the arms 6.7 are attached to the same head carriage 15, when these arms 6 and 7 are all interlocked, there is less variation in the positional relationship in which the upright portions 6c and 7C contact each other. The uniformity of the timing of moving 6.7 in conjunction with each other is improved.

In addition, in the above embodiment, the arm 6.7 is connected to the carriage 1.
5 is used as a coil spring 10.11, but this elastic member may also be a twist υ spring 18.19 as shown in FIG. 2, or a leaf spring 22.23 as shown in FIG. But that's fine.

In FIG. 2, reference numerals 20 and 21 indicate spring hooks of the middle ridge 15.

Further, in the above embodiment, the heads 2 and 3 are in pressure contact with the recording medium 1, but the present invention is applicable to the heads 2 and 3.
3 can also be applied to a non-contact type with the recording medium 1, and similar effects can be obtained in this case as well.

〔Effect of the invention〕

As explained above, the present invention has a pair of head support arms 6.7 built into the same head carriage 15 and fixed to the body carriage via the second leaf springs 6b and 7b. Compared to the case where each arm 6.7 has a separate carriage 8.9, the mounting of these carriages 8.9 to each other reduces the precision of the position of the head 2.3 relative to the recording medium 1. uniformity,
Also, it is possible to eliminate uneven timing of movement of the arms 6 and 7, which are configured to be interlocked.

[Brief explanation of the drawing]

Figure aa1 is a cross-sectional view showing one embodiment of the present invention, and Figures 2 and 3 are cross-sectional views showing other different embodiments.
Figure 4 is a sectional view showing the conventional example, and Figure 5 is A-A in Figure 4.
1: Recording medium, 2 a 3: Head, 4, 5: Leaf spring % 6 #7: Head support arm, 10.11: Coil spring, 15: Ped carriage. In addition, the same reference numerals in the figures indicate the same or equivalent parts@ Agent Patent Attorney Masaru Sato Figure 3

Claims (3)

[Claims] (1) A pair of heads that have the function of writing information to a recording medium or reading information recorded on a recording medium, or both, and separate head supports to which these heads are respectively attached. an arm, a head carriage in which these head support arms are incorporated, and one end of which is fixed via each separate leaf spring;
comprising separate elastic members for urging the head carriage and the head support arm into pressure contact with each other, and rising portions provided on both of the head support arms and arranged so as to overlap with each other, The head carriage and the head support arm come into contact with each other due to the bias of the elastic member, and the height position of the head relative to the recording medium is determined, and one of the head support arms is connected to the other head support arm. By moving away from the one head support arm, the rising portion of one head support arm kicks the rising portion of the other head support arm, thereby causing the other head support arm to also move away from the one head support arm. In a structure in which these head support arms are configured to interlock with each other, the pair of head support arms described above are assembled into the same head carriage, and the head support arms are fixed to the head carriage via the leaf spring. A head support mechanism featuring: (2) Information is written to the recording medium or information recorded on the recording medium is read out while the recording medium and the head are in contact with each other. The head support mechanism described in section. (3) Information is written to the recording medium or information recorded on the recording medium is read out without contact between the recording medium and the head. Head support mechanism according to item 1.