JPH0424532Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a disk drive device that uses a disk cassette such as a microfloppy disk as a recording medium, and in particular, the present invention relates to a disk drive device that uses a disk cassette such as a microfloppy disk as a recording medium. This invention relates to an arm operating member that is removably attached to the arm operating member.

[Conventional technology]

Conventionally, a disk drive device that uses a disk cassette such as a microfloppy disk as a recording medium records and reproduces information signals by moving a magnetic head in the radial direction of the magnetic disk housed in the disk cassette. is configured to do so.

A head transporting device for transporting the magnetic head in the radial direction of the magnetic disk is comprised of a support arm supporting the magnetic head at its tip and a head transporting body.

The support arm that supported the magnetic head was
The cassette holder is rotated in conjunction with the lifting and lowering movement of the cassette holder to mount the disk cassette in the cassette mounting portion in the disk drive device, and causes the magnetic head supported on the distal end side to approach and separate from the magnetic disk in the disk cassette.

A mechanism for moving such a magnetic head toward and away from a magnetic disk has conventionally been constructed as shown in FIG.

That is, the head support arm 20, which has the magnetic head 20a attached to its tip, is biased by the torsion coil spring 21 to rotate toward the magnetic disk (not shown), that is, in the direction of arrow A in FIG.
installed on. This head support arm 20 is connected to a disk mounting device 23 for mounting the disk cassette to a predetermined cassette device position.
A rotating operation piece 24 protruding from one side is brought into abutment engagement with a head transfer body operation arm 26 formed on a part of a cassette holder 25 constituting the cassette holder 25 from the upper side in the figure.

In this way, attach the rotating operation piece 24 to the cassette holder 2.
When the cassette holder 25 is raised or lowered to mount or eject a disk cassette, the head support arm 20, which is brought into abutting engagement with the rotary operation piece 24 formed at 5, moves the cassette holder 25 up and down. The magnetic head 20a is rotated to move toward and away from the magnetic disk.

[The problem that the idea aims to solve]

By the way, the head support arm 20 in a conventionally used disk drive apparatus has the rotary operation piece 24 attached to the head transfer body operation arm part 26 formed on the cassette holder 25 for loading and unloading the disk cassette as described above. Cassette holder 2
5, the assembly work becomes extremely complicated.

That is, the conventional disk drive device has a head support arm 20 that supports the magnetic head 20a.
After the head feeding device including the head feeding device is assembled on the mechanical chassis, the cassette holder 25 constituting the disk mounting device is assembled and arranged on the mechanical chassis.

Therefore, in order to assemble the cassette holder 25 onto the mechanical chassis, the head support arm 2
It is necessary to dispose the head transfer body operating arm portion 26 which overlaps the rotating operating piece 24 of 0 so that it can go under the lower surface of the rotating operating piece 24, resulting in extremely poor assembly workability. Furthermore, when assembling the cassette holder 25, there is a risk that a portion of the cassette holder 25 may come into contact with the magnetic head 20a attached to the tip of the head support arm 20. In order to avoid such contact between the magnetic head 20a and the cassette holder 25, when the head support arm 20 is rotated in a direction opposite to the biasing direction of the torsion coil spring 21, the head support arm 20
There is also a risk that an excessive load will be applied to the mounting position and the accuracy of the mounting position will be impaired.

Furthermore, by adopting the process of assembling the cassette holder 25 on the lower side of the head support arm 20, it is difficult to assemble using an automatic assembly machine, and manual assembly becomes necessary, which reduces the production efficiency of the disk drive device. It is hindering improvement.

Therefore, the present invention aims to protect the magnetic head,
The object of this proposal is to provide a disk drive device that enables assembly without impairing the mounting accuracy of the head support arm that supports the magnetic head and disk support pads, and that also enables assembly using automatic machines. It is something that

[Means to accomplish the task]

In the present invention, when a disk cassette is inserted, the cassette holder is raised and lowered by the lifting means to load and eject the disk cassette, and as the cassette holder is raised and lowered, the support arm to which the head or pad is attached is raised and lowered. In the disk drive device, the head or pad is configured to come into contact with or separate from the disk, and the holder is configured to be removable from the lifting means. A rotary operation piece provided so as not to interfere with the cassette holder, and a rotary operation piece that is detachably attached to the cassette holder and engages with the rotation operation piece when the cassette holder is raised to separate the support arm from the disk. The above-mentioned object is achieved by comprising an arm operating member that allows the user to move the arm.

[Effect]

In the disk drive device according to the present invention, by attaching the arm operating member to the cassette holder, the cassette holder and the support arm are relative to each other via the rotary operating piece and the arm operating member, and the elevating and lowering operations of the cassette holder are controlled. Following this, the support arm is moved up and down.

〔Example〕

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

The disk drive device according to the present invention, like the conventional disk drive device, includes a head feeding device 2 including a support arm 6 that supports a magnetic head 6a on the distal end side, which is mounted on a mechanical chassis 1, and then
The cassette holder 5 constituting the disk device 3 is assembled onto the mechanical chassis 1 as shown in FIG. 1.

When the head feeding device 2 and the disk mounting device 3 are placed on the mechanical chassis 1, the first
As shown in the figure, they are assembled without contacting or interfering with each other. That is, the magnetic head 6
The support arm 6 supporting the cassette holder 5
It is arranged so as to extend within the notch recess 5a formed in the.

Further, on the distal end side of the operating member mounting piece 5b, which is formed to extend from one side of the cassette holder 5 in the extending direction of the support arm 6, there is a rotatable member provided protruding from one side of the support arm 6. An arm operating member 4 that engages relatively with the operating piece 10 is attached. This arm operating member 4 is made of a material that is less rigid than metal such as synthetic resin and has a little elasticity, and is detachably attached to the operating member mounting piece 5b. .

The head feeding device 2 constituting the disk drive device has a head transferring body 7 supported by a feeding guide shaft 11 mounted on the mechanical chassis 1. The support arm 6 is attached to the support arm 6. A plate spring 12 is connected between the head transfer body 7 and the support arm 6.
The plate spring 12 allows the support arm 6 to move in a direction in which the magnetic head 6a on the distal end side contacts the magnetic disk in the disk cassette mounted on the inner side of the cassette holder 5, that is, the cassette mounting section. It is urged to rotate in the direction of arrow B in FIG. Further, although not shown, the head transfer body 7 is engaged with a feed screw rotationally driven by a stepping motor via an engagement pin, and as the stepping motor is rotationally driven, the feed screw and the feed screw are rotated. It is guided by the guide shaft 11 and is operated for feeding. By this feeding operation of the head transfer body 7, the support arm 6 is also fed, and the magnetic head 6a at its tip is moved in the radial direction of the magnetic disk while slidingly contacting the magnetic disk.

Although not shown, the head feeding device 2 is further provided with another support arm facing the support arm 6. The support arm 6 is integrally provided with the head transport body 7 so as to extend from the head transport body 7. A magnetic head is attached to the distal end side of the support arm extending from the head transfer body so as to be in sliding contact with the magnetic disk at a position opposite to the magnetic head 6a attached to the distal end of the support arm 6.

Further, the disk mounting device 3 for mounting a disk cassette in a predetermined cassette mounting portion within the disk drive device is provided with the cassette holder 5 into which the disk cassette is inserted and held, as described above. This cassette holder 5 has cassette holding parts 5c and 5d on both sides of the disk cassette, and an elevating guide piece 1 formed upright from the mechanical chassis 1 with support pins 9a and 9b protruding from both sides.
The mechanical chassis 1 is engaged with the grooves of a and 1b.
placed above. The cassette holder 5 is raised and lowered relative to the mechanical chassis 1 via a lifting means (not shown).

Note that this cassette holder 5 has support pins 9
Since it is placed on the mechanical chassis 1 via the cassette holders 5 and 9b, it can be freely attached to and removed from the mechanical chassis 1. It is also removable.

The disk mounting device 3 having the cassette holder 5 configured as described above is equipped with the cassette holder 5.
When the disk cassette is inserted into the mechanical chassis 1, the disk cassette is lowered to the mechanical chassis 1 side via the elevating means, and the disk cassette is mounted on a predetermined cassette mounting portion. At this time, the disk cassette is
It is pressed and supported by the top plate of the cassette holder 5 in the downward direction. When the disk cassette is mounted in a predetermined cassette mounting section, the magnetic disks in the disk cassette are mounted on the disk table of the disk rotation drive device disposed on the mechanical chassis 1 and made rotatable.

Further, the disk cassette mounted on the cassette mounting section is ejected from the cassette mounting section when the eject button is operated and the elevating means is operated to raise the cassette holder 5.

As mentioned above, the cassette holder 5 into which a disk cassette is inserted is lifted and lowered by the lifting means.
On the tip side of the operating member mounting piece 5b formed in
An arm operating member 4 formed as shown in FIGS. 3 and 4 is attached. The arm operating member 4 is formed into a rectangular shape by forming an upright abutting support portion 15 on one edge side thereof to abut and engage with a rotary operating piece 10 protruding from one side of the support arm 6. Also,
The arm operating member 4 has engaging claws 17 hanging down on both sides of the lower surface thereof to be relatively engaged with the engaging recesses 13 formed on both sides of the operating member mounting piece 5b, and further provided in the center part. Support protrusions 16 are provided that abut on protrusions 14 protruding from both sides of the operating member attachment piece 5b so as to protrude into the formed opening 4a. Furthermore, an elastic arm piece 19 is provided which has a claw portion 19a formed at its tip to be relatively engaged with an engagement hole 18 provided in the operating member attachment piece 5b so as to protrude into the opening 4a. .

The arm operating member 4 formed as described above is
By inserting the operating member mounting piece 5b from the distal end side so that the engaging groove 8 formed by the engaging claw 17 and the supporting protrusion 16 is engaged with both sides of the operating member mounting piece 5b, the first As shown in FIG. 2, it is attached to the operating member attachment piece 5b. When the arm operating member 4 is attached as shown in FIG.
The supporting protrusion 16 is engaged with the engagement recess 13 formed in the operating member mounting piece 5b.
4, the operating member mounting piece 5b is held between the engaging claw 17 and the supporting protrusion 16. Further, the elastic arm piece 19 extends over the operating member mounting piece 5b, and has a claw portion 19a at its tip formed in an engagement hole 18 that projects from the operating member mounting piece 5b. That is, the arm operating member 4 is held by the operating member mounting piece 5b by sandwiching the operating member mounting piece 5b between the engaging claw 17 and the supporting protrusion 16, and is held by the claw portion 19a at the tip of the elastic arm piece 19. It is attached to the operation member attachment piece 5b whose fitting position with respect to the operation member attachment piece 5b is regulated by engagement with the engagement hole 18.

When the arm operating member 4 is attached to the operating member attachment piece 5b as described above, the contact support portion 15 formed on one side edge of the arm operating member 4 and the support arm 6
The rotary operating piece 10 protruding from one side is in a state where they can be engaged with each other, and the support arm 6 is rotated following the lifting and lowering operation of the cassette holder 5 provided with the operating member attachment piece 5b. be done. That is,
When the cassette holder 5 is raised, the support arm 6 is moved away from the magnetic disk in the disk cassette mounted on the cassette mounting portion.

Note that the operation for removing the arm operating member 4 from the operating member mounting piece 5b is performed using the elastic arm piece 19.
It can be easily removed by bending the tip, disengaging the claw portion 19a at the tip from the engagement hole 18, and pulling it out from the operating member mounting piece 5b.

In the above-mentioned embodiment, a magnetic table 6a is provided at the tip of the support arm 6 extending to the upper surface side of the magnetic disk in order to be applicable to a magnetic disk having both sides as signal recording surfaces. When applied to a magnetic disk having only a signal recording surface, the above-mentioned magnetic head is attached to the tip of the support arm 6 in cooperation with a magnetic head attached to the tip of the other support arm disposed opposite to the support arm 6. It may also be provided with pads that hold the magnetic disk.

[Effect of idea]

As mentioned above, the present invention prevents the cassette holder and the support arm to which the magnetic head etc. are attached from interfering with each other, and by attaching the detachable arm operating member to the cassette holder, the cassette holder and the supporting arm to which the magnetic head, etc. are attached, can be attached. The cassette holder and the support arm are related to each other, so that the support arm can be separated from the disk during the upward movement of the cassette holder. This can be done while preventing interference such as collision with the arm, and the magnetic head etc. attached to the tip of the support arm can be protected.

Further, since there is no need to release the support arm when assembling the cassette holder, it is also possible to prevent interference with the mounting accuracy of the support arm.

Further, since the support arm and the cassette holder are assembled by arranging them one on top of the other on the mechanical chassis, assembly can be performed by an automatic machine, and mass productivity can be improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of a disk drive device according to the present invention, and FIG. 2 is a schematic plan view of the assembled state. FIG. 3 is a sectional view of the arm operating member constituting the present invention, and FIG. 4 is a plan view of the arm operating member. FIG. 5 is a schematic perspective view showing a head feeding device and a disk mounting device in a conventional disk drive device. 2...Head feeding device, 3...Disk mounting device, 5...Cassette holder, 5b...Operation member mounting piece, 6...Support arm, 6a...Magnetic head, 6...Support arm, 10...times Dynamic control piece.

Claims (1)

[Claims for Utility Model Registration] A support arm to which a cassette holder into which a disk cassette is inserted is raised and lowered by an elevating means, and a head or a part is attached, which performs device and ejection of the disk cassette, and which is used as the cassette holder is raised and lowered. is raised and lowered, and the head or pad is brought into contact with or separated from the disk,
In a disk drive device in which the cassette holder is configured to be removably attached to the lifting means, a rotary operation piece provided on the support arm so as not to interfere with the cassette holder that moves up and down; It is removably attached to the cassette holder,
A disk drive device comprising: an arm operation member that engages with the rotating operation piece to move the support arm away from the disk when the cassette holder is raised.