JPS61253678A - Head supporting spring - Google Patents

Abstract

PURPOSE:To prevent exactly the resonance of an elasticity working part by a structure which can be worked easily, by providing as one body a rib on at least the elasticity working part of a head supporting spring by means of press working. CONSTITUTION:A rib 31 whose section is roughly a semicircular arc shape is provided as one body by means of drawing press working on the whole periphery of an elasticity working part 24 being an inner frame of a rectangular shape of a head supporting spring 21. 31 is worked simultaneously when stamping the head supporting spring 21 from a plate spring of a metal. In this way, the rigidity of the elasticity working part 24 is raised remarkably by the rib 31, and as a result, the resonance of the elasticity working part 24, generated by a rotation of a floppy disk at the time of reproduction can be prevented exactly.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a system for elastically supporting a recording and reproducing head along with a support spring that can be applied to each type of recording and reproducing device. The present invention relates to a leaf spring that elastically presses the head into contact with the recording medium.

[Summary of the invention]

The present invention consists of a leaf spring and is arranged at the head mounting part and the outside thereof. In the head support spring, the head support spring is configured to be integrally connected to the fixing part by an elastic acting part, the head is attached to the head mounting part, and the fixing part is fixed to another head supporting member. By providing a means for preventing common mt in the part by using a gold press processing trap, deterioration of the quality of recording and playback signals and generation of harsh audible sounds can be extremely and reliably prevented, and the 77D construction is extremely simple.
This makes it possible to significantly increase productivity.

[Conventional technology]

FIG. 5 shows a head support device in a conventional floppy disk player.

A pair of upper and lower magnetic heads 1.2 for magnetic recording and reproduction are attached to the upper and lower surfaces of the tips of a pair of upper and lower head support members comprising a helad arm 3 and a carriage 4. The carriage 4 has a guide shaft 6 installed horizontally on the chassis 5.
The rear end of the head arm 3 is attached to the upper part of the rear end of the carriage 4 via a plate 7 so as to be able to swing vertically (in the directions of arrows a and b). A compression coil spring 8 swings downwardly (in the direction of arrow a) and urges the cartridge 1o to rotate freely inside the cartridge 1o, which rotatably stores a floppy disk 9 made of a magnetic sheet as a recording medium. When the floppy disk 9 is mounted horizontally on the four positioning bins 11 and horizontally mounted on the upper button of the turntable 12, a pair of upper and lower magnetic heads 1. 2 is inserted, and these magnetic spatulas) 1.2 are brought into contact with the upper and lower surfaces of the floppy disk 9. At this time, the cartridge 10 is moved from the upper position shown by the chain line to the mounting position shown by the solid line in the direction of arrow C. As the head arm 3 is lowered parallel to the direction, the head arm 3 is rotated in the direction of the arrow Efla from the upper position shown by the chain line to the lowered position shown by the solid line by the spring force of the compression coil spring 8. After this cartridge 10 is installed, the floppy disk 9 is rotated within the cartridge 10 by a turntable 12 driven by a motor 15, and the carriage 4 is horizontally driven in the direction of arrow d by a carriage drive mechanism (not shown). The pair of upper and lower magnetic heads 1 and 2 are brought into contact with the upper and lower surfaces of the floppy disk 9 and moved in the radial direction of the floppy disk 9, thereby performing desired magnetic recording and reproduction.

FIG. 6 shows a head support spring 21 used in a conventional floppy disk player.
This head support spring 21 is used to improve the adhesion of the pair of upper and lower magnetic heads 1 and 2 to the upper and lower surfaces of the floppy disk 9. Note that this head support spring 21 is used for either or both of the attachment of the upper magnetic head to the head arm 3 and the attachment of the lower magnetic head 2 to the carriage 4; The head support spring 21 used to attach the upper magnetic head will be explained.

The head support spring 21 is commonly called a gimbal, and is made of a plate spring made of a metal such as a phosphor bronze plate or a stainless steel plate, and is pressed into a rectangular shape, for example. It is constituted by a fixing part 23 which is a rectangular outer frame and an elastic acting part 24 which is a rectangular inner frame integrally connected therebetween.

Note that there are two directions (arrow 8) X' between the head attachment part 22 and the elastic action part 24 and between the elastic action part 24 and the fixed part 23, which are orthogonal to each other at the center part 0 of the head attachment part 22.

V direction], each pair of inner and outer connecting portions 25 and 26 are integrally connected to each other. The magnetic head 1 is mounted on the central portion O of the head mounting portion 22 by adhesives, screws, etc., and the fixing portion 23 is fixed to the head arm 3, which is a head support member, by adhesives, screws, etc.

According to the head support spring 21 configured as described above, the magnetic head 1 is elastically supported in two three-dimensional directions, that is, the X and Y directions, so that the magnetic head 1 can be attached to the flexible floppy disk 9. It can be pressed and contacted very well elastically.

[The problem that the invention attempts to solve]

The head support spring 21 used in this type of conventional floppy disk player needs to be made small and lightweight, so a metal leaf spring with a very thin plate thickness is used. When the floppy disk rotates 90 times during playback, the elastic acting portion 24 of the head support spring 21 is likely to be damaged. The joint recording of the elastic action section 24 causes the magnetic head 1t to be amplified and vibrated, which increases the jitter of the magnetic recording and reproduction signals, resulting in deterioration of the quality of the magnetic recording and reproduction signals and possible harshness. There was an audible sound.

Conventionally, as a countermeasure to this problem, the head support spring 21
In particular, a rigid body T-glue is attached to the elastic acting portion 24.

A method of preventing co-optation has been taken by applying an adhesive such as silicone rubber or the like to lower the resonant frequency of the elastic acting portion 24. However, this method is a so-called retrofit method, and the workability is extremely poor (not only is the productivity extremely low).

1jlll The adhesion of the body, silicone rubber, etc. is uncertain.

These tend to get stuck between themselves and the elastic acting part, and are likely to peel off during photographing, resulting in poor performance in preventing joint gripping of the elastic acting parts, and maintenance is also extremely troublesome.

The present invention makes it possible to extremely reliably prevent resonance of the elastic acting portion with a small head support spring by using a structure that is extremely easy to process.

Means for Solving Problem C] The present invention is such that a rib formed by a press knife is integrally provided on at least the elastic acting portion of the head support spring described above, and this rib prevents resonance of the elastic acting portion. It is composed of

[For production]

In the present invention, the ribs provided integrally with at least the elastically acting portion of the head support spring significantly increase the rigidity of the elastically acting portion, and as a result, resonance of the elastically acting portion can be extremely reliably prevented.

Moreover, the ribs provided on the elastic acting part are integrally formed by press working, and when the head support spring is punched out from a metal plate spring, the ribs can be machined at the same time, so conventional retrofitting is not possible. Compared to the 7JO construction, the structure is extremely simple.

〔Example〕

Hereinafter, an embodiment in which the present invention is applied to a head support spring used in a floppy disk player will be described with reference to FIGS. 1 to 4. Note that this is the same as the conventional example shown in Fig. 6.
Structural parts are given the same reference numerals and their explanations are omitted.

First, the head support spring 21 shown in FIG.

The cross section of the elastic acting portion 24, which is a rectangular inner frame, is formed by press working, and is integrally provided with ribs 31 in the shape of a semicircular arc.

Next, the head support spring 2 shown in FIG. 2 has two parallel sides 24a to which a pair of connecting parts 25 of the elastic acting part 24, which is a rectangular inner frame, are connected.

The two parallel sides 23a to which the pair of connecting parts 26 of the fixing part 23, which is a rectangular outer frame, are connected are integrally provided with ribs 32° and 33, which have a semicircular arc shape in cross section with a drawing press knife. It is something.

Next, the head support spring 21 shown in FIG.

A pair of connecting parts 2 of the elastic action part 24 which is a rectangular inner frame
A rib 34 is integrally provided on the two parallel sides 24b to which the ribs 6 are connected, and the cross section is formed by drawing into a semicircular arc shape.

Next, the head support spring 21 shown in FIG. 4 has two parallel sides 24a,
Ribs 35, 36t are integrally provided on 24b by bending press processing.

According to the head support spring 21 of the present invention in which the ribs 31 to 36 as described above are integrally provided, at least the elastic acting portion 2
4 (the one in Figure 2 also includes the fixed part 23), the rigidity of the rib 31~
As a result, the elasticity of the elastic acting portion 24 due to the rotation of the floppy disk 9 during magnetic recording and reproduction as described above is significantly increased by 36! M can be reliably prevented.

! The ribs 31 to 36 are machined at the same time when the head support spring 21 is punched out from a metal leaf spring such as a phosphor bronze plate or a stainless steel plate.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments (various effective changes can be made based on the technical idea of the present invention).

For example, the ribs 31 to 36 shown in FIGS. 1 to 4 can be combined as appropriate.

Further, although the head support spring 21 shown in FIGS. 1 to 4 has a rectangular shape, it may have a circular shape, for example.

Further, the head mounting part fixing part and the elastic acting part of the head support spring of the present invention are the head mounting part 2 shown in FIGS. 1 to 4.
2. The shapes of the fixed part 23 and the elastic acting part 24 are not limited (these can be changed in various shapes).

Similarly, the ribs of the present invention can be modified to shapes other than the ribs 31 to 36 shown in FIGS. 1 to 4.

Further, the present invention is not limited to the head support spring of a floppy disk player shown in the embodiment, but can be applied to recording,
It can be applied to head support springs of various recording and reproducing apparatuses that elastically support various reproducing heads by pressing them against various recording media.

〔Effect of the invention〕

According to the present invention, resonance of the elastic acting part can be extremely reliably prevented by the ribs provided integrally with at least the elastic acting part of the head support spring by press working.
Deterioration in the quality of recorded and reproduced signals and generation of harsh audible sounds can be extremely reliably prevented. Furthermore, the ribs that are integrally provided on the springs to prevent resonance in the elastic acting parts have an extremely easy structure that allows them to be press-formed at the same time as the head support spring is punched out from a metal plate.
77D machining is extremely easy and productivity is significantly improved. Furthermore, the ribs, which are integrally provided on the elastic acting part by means of a press tool, are free from any fear of becoming loose or peeling off between the rib and the elastic acting part.

The anti-resonance performance of the elastic acting part is extremely high and stable, which is also very advantageous in terms of maintenance.

[Brief explanation of drawings]

1 to 4 are perspective views showing embodiments of the head support spring of the present invention. FIG. 5 is a sectional view showing a conventional head support device for a floppy disk player, and FIG. 6 is a perspective view of a head support spring of the same head support device. The symbols used in the drawings are as follows: 1...Magnetic head 21...Head support spring 22...Head mounting portion 23 ...... Fixed part 24 ...... Elastic action part 25 ...... Connecting part 26 ...... 1 31...・・・Rib 32 ・・・・・・・・・ I 33 ・・・・・・・・・ 1 34 ・・・・・・・・・ I 35 ・・・・・・・・・ I 36 ・・・・・・...I.

Claims (1)

[Claims] Consisting of a leaf spring, the head attachment part and a fixing part disposed outside the head attachment part are integrally connected by an elastic acting part, the head is attached to the head attachment part, and the fixation part is connected to the other parts. A head support spring configured to be fixed to a head support member, characterized in that at least the elastic acting portion is integrally provided with a press-formed rib, and the rib is configured to prevent resonance of the elastic acting portion. head support spring.