JPS60182553A - Magnetic head device - Google Patents

Abstract

PURPOSE:To increase the strength of the structure of a gimbal mechanism and also to secure application even to a two-sided head, by using a mobile protection member having a prescribed sloping angle and elasticity to give connection between a head holding plate and a gimbal plate. CONSTITUTION:A holding member 20 for a head 10 is connected to a gimbal plate 22 via mobile protection members 21a and 21b having the sloping surfaces of a prescribed angle and elasticity respectively. Thus it is possible to avoid assuredly such an inconvenience case where the end part of a jacket window is hooked to the head 10 when the jacket is inserted or ejected. Furthermore a function such as a gimbal spring, etc. is obtained to increase the strength of a gimbal mechanism. Thus the damages of the gimbal mechanism due to a contact with the jacket can be decreased. In such a constitution, the same structure can be given to both upper and lower heads to secure application even to a two- sides head. Thus the mass productivity is improved with such magnetic heads.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention particularly relates to a magnetic head device used in a floppy disk device.

[Technical background of the invention and its problems]

Conventionally, a magnetic head device as shown in FIG. 1, for example, has been used in a floppy disk device. This magnetic head device includes a magnetic head (hereinafter simply referred to as a head) 1 (11) that performs data read/write operations on a floppy disk (hereinafter simply referred to as a disk), and this head 10 is held by a gimbal holding member 11. Further, the gimbal holding member 11 is connected to a gimbal plate (14 in FIG. 2) via a gimbal spring 12 to constitute a C-gimbal mechanism.

By the way, in a floppy disk device, the disk 15 is housed in a jacket 16 as shown in FIG.
Insert into the disk device together with this jacket 16,
Evacuation takes place.

The jacket 16 is provided with a window 17,
This window 17 allows the disk 15 and head 10 to come into contact with each other. Here, jacket 16
When the window 17 is inserted and ejected as shown in FIGS. 2 and 3, a situation such as the end of the window 17 getting caught on the head 10 may occur. For this reason, an apparatus has been developed in which a protective member 18 is attached around the head 10, as shown in FIG. This protection part 18 can prevent the jacket 16 from getting caught on the head 10.

However, in the magnetic head device having the above-described structure, when the jacket 16 is inserted and ejected, it comes into contact with the protective member 18 and applies pressure to the head 1o. Therefore, if the gimbal spring 12 is thin and has low strength, the gimbal spring 12 may be damaged. In addition, in a double-sided disk device, ``5ide Q per disk.

The head devices of 51de1 are arranged vertically facing each other. In this case, since the protection member 18 as described above is usually not required for the upper head device, the structures of the gimbal mechanisms of the upper and lower head devices are different. Therefore, even the same floppy disk device requires two types of gimbal mechanisms, which complicates the manufacturing process of the head device and hinders mass production.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to strengthen the structure of the gimbal mechanism that has a function of protecting the head, and to make it possible to share it with each double-sided head device, thereby making it stable. It is an object of the present invention to provide a magnetic head device which can achieve mass production in terms of structure and manufacturing.

[Summary of the invention]

In the present invention, a movable protection member is provided that connects the holding part that holds the head and the gimbal plate to form a gimbal mechanism. This movable protection member is used for inserting the disc,
It has a sloped structure that protects the head during ejection.

By using the movable protection member that serves both as a gimbal spring and a protection member as described above, the structure of the gimbal mechanism can be strengthened, and moreover, the gimbal mechanism can be made common to the double-sided 5ide O and 5ide 1 head devices.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Fourth
The figure and FIG. 5 show h% of a magnetic head device according to one embodiment.
FIG. 3 is a cross-sectional view and a perspective view, respectively. In FIGS. 4 and 5, 2-0 is the side of the holding section for holding the head 10. This holding member 20 is connected to the gimbal plate 22 by the protective portion 21a and 21b. This gimbal plate 22 is normally connected to a carriage (not shown).

On the other hand, the movable protection parts f)+22a and 22b are made of the same material as the gimbal plate 22 (12 in FIG. 1), and as shown in FIG. The movable protection part 1yz is configured to have an inclined surface at a predetermined angle with respect to the
Z a and 2 l b are provided in the direction of disk insertion and ejection (arrow 23), and are arranged to prevent the jacket that accommodates the disk from coming into contact with the head 101 .

In the magnetic head device configured as described above, the effects of one embodiment will be explained. First, when the disk (corresponding to 15 in Fig. 2) housed in the jacket is inserted, the tip of the jacket and the window (corresponding to 15 in Fig. 2) are inserted.
The end portions (corresponding to 7) contact the movable protection member 21a. Therefore, the jacket is set at a predetermined position on the head 10 without coming into contact with the head 1o. Further, when the set jacket is ejected, the jacket is taken out without coming into contact with the head 10 in the same manner as described above. Therefore, it is possible to reliably prevent the end of the window of the jacket from getting caught in the head 10 when inserting or ejecting the jacket.

Furthermore, when inserting and ejecting the jacket, the jacket has a movable protective part Tpz J a , , ? Jb will be contacted and suppressed. In this case, the movable protection member 21
A and 21b constitute a gimbal mechanism together with the gimbal plate 22 as described above, and have a function similar to a gimbal spring. Therefore, the shock caused by the contact of the jacket can be absorbed to some extent, and since it has a relatively strong structure, it is possible to suppress damage to the gimbal mechanism caused by the contact of the jacket.

In addition, in double-sided floppy disk drives, 5i
The gimbal mechanism as described above can be used in common for each of the head devices of the deQ and 5ide l, and the structure of each head device can be made the same. This is because the movable protection members 21a and 21b have a structure in which the movable protection members 21a and 21b serve both as the protection part for the head 10 and the gimbal spring of the gimbal mechanism, as described above. Therefore, 5ideO
, 5ide 1 can be manufactured by the same manufacturing process, the head devices can be mass-produced, and manufacturing costs can be reduced.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to realize a gimbal mechanism that has a function of protecting the head and has a strong structure. Therefore, it is possible to provide a magnetic head device that has a stable structure and operates reliably. In addition, in a double-sided floppy disk device, since the structure allows the use of 5ideQ and 1 magnetic head devices I, it is possible to realize mass production and reduce manufacturing costs when manufacturing magnetic head devices.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing the configuration of a conventional magnetic head device, respectively. Figure 1 is a perspective view, Figures 2 and 3 are cross-sectional views, and Figures 4 and 5 are diagrams showing the structure of a conventional magnetic head device. FIG. 4 is a cross-sectional view, and FIG. 5 is a perspective view, showing the configuration of a magnetic head device according to an embodiment. 10...Magnetic head, 15...Disk, 16...
・Jacket, 20... Holding member, 21a, 21b
...Movable protective part, 22...Gimbal plate. Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 2, 14? JS3 figure 4 figure 5

Claims (1)

[Claims] A magnetic head for reading/writing data to/from a floppy disk, a holding member for mounting and holding this magnetic head, a support plate having an opening large enough for the holding member to pass through, and the holding member placed in the opening of the support plate. one end of the member is connected to the support plate so as to form a continuous slope from the support plate to a height parallel to the surface of the magnetic head in the direction of loading and unloading the floppy disk so as to protect the magnetic head; 1. A magnetic head device comprising: an elastic movable protection member whose other end is connected to the holding portion O.