JPH1166722A - Disk recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a disk recorder of belt drive system further thin in thickness and small in size. SOLUTION: A hub driving motor 5 is fitted to a chassis in the rear part of the disk recorder to make its rotary shaft vertical to the inserting direction of a medium and a rotary shaft of a hub 9. The rotary shaft of the motor 5 is fitted with one bevel gear 1a of a miter 1, while the other bevel gear 1b of the miter 1 is coaxially integrated with a pulley 6, and is fitted with its center shaft vertically to the chassis 10 in a corner of the rear part of the disk recorder. A belt 7 is stretched between the pulley 6 and the hub 9 serving a medium chucking mechanism as well, and this belt 7 is given proper tension by an idler 8. Driving force of the motor 5 is converted with its rotary shaft by the miter 1 to be parallel to that of the hub 9, and is further transmitted to the hub 9 by the belt 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk recording apparatus, and more particularly to a thin and small disk recording driving apparatus which drives a medium by a belt driving method.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view of a conventional disk recording apparatus.

[0003] A DC motor 15, which has a pulley 6 for transmitting power on a rotating shaft, is used as a medium driving motor of a conventional belt drive type disk recording apparatus. The pulley 6 and the motor 15 have a rotating shaft. It is arranged at the rear of the apparatus so as to be parallel to the rotation axis of a hub 9 for holding a floppy disk (not shown) as a medium. The driving force of the motor 15 is transmitted from a pulley 6 attached to a rotating shaft of the motor 15 to a hub 9 having a chucking mechanism that holds the pulley and the medium via a belt 7. The belt 7 is given an appropriate tension by an idler 8.

[0004]

A problem with the prior art is that it is difficult to further reduce the thickness and size of the belt-driven disk recording device.

[0005] The reason is that, in the disk drive of the belt drive system, it is necessary to secure the arrangement portion of the motor for driving the medium outside the space where the medium is inserted. Since the conventional disk recording device uses a large-diameter DC motor having a pulley for power transmission on a rotating shaft of the motor, there is a limit to reducing the height or the outer diameter.

[0006]

According to the present invention, there is provided a disk recording apparatus comprising: a rotatable hub (9 in FIG. 1) for holding a medium;
A motor whose rotation axis is perpendicular to that of the hub (5 in FIG. 1); rotation axis direction converting means for transmitting rotation of the rotation axis of the motor to a pulley whose axis is parallel to the axis of the hub; Belt for transmitting the rotation of the shaft to the hub (7 in FIG. 1)
For example, one bevel gear (1a in FIG. 1) is attached to the rotating shaft of the motor, and the other bevel gear (1b in FIG. 1) is coaxially attached to the pulley. There is a miter (1 in FIG. 1).

[0007]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of a disk recording apparatus according to a first embodiment of the present invention.

In FIG. 1, a 1: 1 power transmission member is used.
A hub driving motor 5 having a miter 1 which is a bevel gear with a gear ratio of the following gear ratio on the rotating shaft has a rotating shaft perpendicular to the medium insertion direction and the rotating shaft of the hub 9 on the chassis 10 behind the disk recording device. So that it is attached. The motor 5 is, for example, an elongated DC motor having a small outer diameter such as a coreless motor.
a is attached. The other bevel gear 1b of the miter 1 is coaxially integrated with the pulley 6, and is attached to the chassis 10 at one corner behind the disk recording device with the central axis vertical.

A belt 7 is stretched between a hub 9 having both a pulley and a medium chucking mechanism and a pulley 6, and an appropriate tension is applied to the belt 7 by an idler 8.

The driving force of the motor 5 is converted by the miter 1 so that the rotation axis is parallel to that of the hub 9, and further transmitted to the hub 9 by the belt 7.

In this embodiment, since the motor 5 can be arranged in a small gap of the device, the disk recording device can be made thinner and smaller.

FIG. 2 is a perspective view of a disk recording apparatus according to a second embodiment of the present invention.

In FIG. 2, a hub driving motor 5 provided with a miter 1 as a power transmission member on a rotating shaft is provided at the rear of the left side of the disk recording device, and the rotating shaft is parallel to the medium insertion direction and the rotating shaft of the hub 9 is rotated. Is mounted on the chassis 10 so as to be perpendicular to the chassis 10. The motor 5 is an elongated DC motor having a small outer diameter, and one bevel gear 1a of the miter 1 is attached to a rotating shaft. The other bevel gear 1 of the miter 1
b is coaxially integrated with the pulley 6, and is attached to the chassis 10 at one corner behind the disk recording device with its central axis vertical.

A belt 7 is stretched between a hub 9 having both a pulley and a medium chucking mechanism and a pulley 6, and the belt 7 is given an appropriate tension by an idler 8.

Also in this embodiment, since the motor 5 can be arranged in a small gap of the device, the disk recording device can be made thinner and smaller.

FIGS. 3 to 5 are perspective views of the motor 5, the pulley 6, and the rotation transmitting portion between them, according to the third to fifth embodiments of the present invention. In these embodiments,
Parts not shown in FIGS. 3 to 5, the motor 5 and the pulley 6 are the same as those in the first embodiment in FIG.

In FIG. 3, a spiral gear 2a is mounted on a rotating shaft of a motor 5, and a spiral gear 2b meshing with the spiral gear 2a is coaxially mounted on a pulley 6.

In FIG. 4, a small-diameter bevel gear 3a is mounted on the rotating shaft of a motor 5, and a large-diameter bevel gear 3b meshing with the bevel gear 3a is coaxially mounted on a pulley 6.

In FIG. 5, a worm 4a is mounted on a rotating shaft of a motor 5, and a worm gear 4b meshing with the worm 4a is coaxially mounted on a pulley 6.

[0021]

An advantage of the present invention is that a belt-driven disk recording apparatus can be made thinner and smaller.

The reason is that the rotation of the rotation shaft of the motor for driving the rotation of the medium is converted into rotation about an axis parallel to the axis of the hub by using a miter or the like, so that the rotation axis of the motor is converted to the medium. This is because, since the motor can be made perpendicular to the axis of the holding hub, a motor having a small outer diameter can be used and the motor can be arranged in a small gap in the device.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disk recording device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a disk recording device according to a second embodiment of the present invention.

FIG. 3 is a perspective view of a motor 5, a pulley 6, and a rotation transmitting portion between the motor 5 and the pulley 6 of a disk recording apparatus according to a third embodiment of the present invention.

FIG. 4 is a perspective view of a motor 5, a pulley 6, and a rotation transmitting portion between the motor 5 and the pulley 6 of a disk recording apparatus according to a fourth embodiment of the present invention.

FIG. 5 is a perspective view of a motor 5 and a pulley 6 of a disk recording apparatus according to a fifth embodiment of the present invention and a rotation transmitting portion therebetween.

FIG. 6 is a perspective view of a conventional disk recording device.

[Explanation of symbols]

 Reference Signs List 1 miter 1a, 1b bevel gear 2a, 2b spiral gear 3a, 3b bevel gear 4a worm 4b worm gear 5 motor 6 pulley 7 belt 8 idler 9 hub 10 chassis 15 motor

Claims (2)

[Claims] 1. A rotatable hub for holding a medium, a motor having a rotation axis perpendicular to that of the hub, and transmitting the rotation of the rotation axis of the motor to a pulley whose axis is parallel to the axis of the hub. A disk recording apparatus, comprising: a rotation axis direction changing unit; and a belt for transmitting rotation of the pulley to the hub. 2. The rotating shaft direction changing means is a miter in which one bevel gear is attached to the rotating shaft of the motor and the other bevel gear is coaxially attached to the pulley. 2. The disk recording device according to 1.