JPH0498676A - Optical disk device - Google Patents

Abstract

PURPOSE:To present an oscillation proofing effect against use for a long term by supporting the gravity of a mechanism part by a cylindrical rubber in verti cally installing the device. CONSTITUTION:A head driving mechanism part 2 equipped with an optical head is sealed in a case 6 excepting for the case of inserting/ejecting the disk, and therefore, dust can be proofed. On the other hand, since rubbers 4 and 5 execute quinoid vulcanization or secondary vulcanization, no gas containing a sulfur component generates and therefore, the inside metal does not corrode. When vertically installing the device, the gravity of a loading mechanism 1 and a head driving mechanism part can be supported not only by the cylindrical part of the rubber 4 but also by that of the rubber 5 and therefore, the high oscillation proofing effect can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dust-proof mechanism and a vibration-proof mechanism for an optical or magneto-optical disk recording/reproducing device.

[Conventional technology]

An optical or magneto-optical disk recording and reproducing device is a device that records and reproduces high-density information on a disk, which is a recording medium, and is characterized by a large capacity and the ability to easily replace the recording medium. However, on the other hand, dust and air enter through minute gaps in the device and accumulate on the surface of the objective lens provided in the optical head. Therefore, the laser light reflected and condensed by the lens is cut off, causing reading errors.

Furthermore, in this device, the optical head reads the unevenness of several microns on the disk without contacting the disk, so when the driver of the optical head vibrates due to external vibration, for example, the light beam irradiated from the optical head records the unevenness. It may fall out of the groove and cause reading errors.

As a method for dealing with these phenomena, there is a method in which the disk insertion/ejection mechanism section and the mechanical unit for driving the optical head are supported by an elastic body or a viscoelastic body from the chassis section of the apparatus. As an example of this type of device, for example, Utility Model Application No. 63-18449
Publication No. 4 etc. can be mentioned.

[Problem to be solved by the invention]

The problem with the above conventional technology is that when the user places the device vertically depending on the installation location, shearing force is applied to the viscoelastic body that supports the mechanical unit, and when used for a long period of time, the vibration-proofing effect of the viscoelastic body is lost. .

Furthermore, if a partition wall is provided for the purpose of preventing dust from entering, there is a problem in that the viscoelastic body is filled with sulfur and corrodes metal parts.

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical or magneto-optical disk recording and reproducing device that can exhibit a vibration-proofing effect even when placed vertically for long-term use and can prevent dust from entering.

[Means to solve the problem]

In order to achieve the above objective, the optical head movement, transport mechanism section, disk motor, and mechanism for inserting and ejecting the disk (hereinafter collectively referred to as the mechanism section) were constructed using quinoid-cured rubber. The device is equipped with a cylindrical rubber supported by a spring and subjected to quinoid vulcanization, so that when the device is placed vertically, the gravitational force of the mechanism is supported by the cylindrical rubber.

[Effect]

The optical head, along with other mechanical parts, is sealed and dust-proofed by a disk insertion/ejection cover and a case.

Furthermore, since the mechanism is supported by rubber subjected to quinoid vulcanization, gas containing sulfur that corrodes metals will not be generated even if it is covered with a case or the like.

Further, even when the apparatus is placed vertically, the mechanical section is supported by the cylindrical rubber, so that the vibration-proofing effect of the rubber supporting the mechanical unit can be maintained even during long-term use.

〔Example〕

FIG. 1(a) shows an embodiment of the present invention.

Explanation based on (b) 6 Figure 1 (a) shows a sectional view of an optical disk recording/reproducing device (hereinafter referred to as the device) seen from the front, and Figure 1 (b) shows the device in a vertical position. A cross-sectional view of the case is shown.

In each figure, 1 is a loading mechanism that inserts and ejects a disk or a cassette (not shown) containing a disk onto the recording/reproducing means. Reference numeral 2 denotes a head mounting mechanism section on which an optical head is mounted, and a head drive mechanism section that also includes a disk rotation motor.

Reference numeral 3 supports the loading mechanism 1 and the head drive mechanism section 2 together with the quinoid-vulcanized rubber 4 by means of a spring when the apparatus is placed horizontally as shown in FIG. 1(a).

Numeral 5 is a cylindrical piece of rubber similarly subjected to quinoid vulcanization and supports the loading mechanism 1 and the head drive mechanism section 2 when the apparatus is placed vertically as shown in FIG. 1(b). In addition, when it is placed horizontally, a gap is left between it and the mechanism part 2a as shown in FIG. 1(a).

Reference numeral 6 holds the rubbers 4 and 5 in a case and tightly covers the loading mechanism 1 and the head drive mechanism section 2 together with the door of the cassette insertion/ejection port to prevent dust from entering. 7 locks the rubber 5 to the stud 8 with an E ring. 9 reinforces the enclosure 12 with pillars. 10 is a control board, and 11 is a power transformer.

Next, in the apparatus having the above configuration, dustproofing, prevention of sulfur content in the rubber, and vibration damping effect when placed vertically will be explained.

The head drive mechanism section 2 including the optical head is sealed in the case 6 together with other mechanism sections except when a disk is inserted or ejected, so that it can be dust-proof. Further, since the rubbers 4 and 5 are subjected to quinoid vulcanization or secondary vulcanization, no gas containing sulfur is generated, so that the metal inside is not corroded.

Further, when the apparatus is placed vertically, the gravity of the loading mechanism 1 and the head drive mechanism can be supported not only by the rubber 4 but also by the cylindrical portion of the rubber 5, so that a great vibration-proofing effect can be obtained.

〔Effect of the invention〕

According to the present invention, since the rubber for vibration isolation is quinoid vulcanized, it does not generate gas containing sulfur even when used in a sealing part, and has the effect of not corroding the metal part sealed in the case.

Furthermore, even if the device is placed vertically due to the user's installation location, the cylindrical portion of the rubber 5 can support the loading mechanism 1 and the head drive mechanism, providing a vibration-proofing effect, thereby improving usability for the user.

[Brief explanation of drawings]

FIG. 1(a) is a sectional view of an optical disk recording/reproducing apparatus according to an embodiment of the present invention, viewed from the front, and FIG.
A cross-sectional view of the device shown in the figure when placed vertically is shown. 1... Loading mechanism, 2... Head drive mechanism section, 3... Wings, ... Support. Rubber, rubber, case,

Claims (1)

[Scope of Claims] 1. A disk insertion/ejection device in an optical or magneto-optical disk recording/reproducing device that has a function of positioning a disk or a cassette containing a disk on a recording/reproducing means and a function of ejecting the disk or cassette from the device. A mechanism (hereinafter referred to as a loading mechanism), an optical head drive mechanism in which an optical head is mounted and transferred to an arbitrary position in the radial direction of the disk, and a disk motor are connected to a first viscoelastic body or a first viscoelastic body. A second elastic body is provided which is supported by an elastic body and whose outer shape abuts and supports the loading mechanism or the frame portion of the head drive mechanism when the optical or magneto-optical disk recording/reproducing device is placed vertically; A case equipped with a head drive mechanism, a motor for a disk, a first viscoelastic body, or a lid that opens and closes an opening for inserting and ejecting a disk or a cassette containing a disk. 1. An optical or magneto-optical disk recording and reproducing device characterized by being covered or engaged with and sealed. 2. In the optical or magneto-optical disk recording and reproducing apparatus according to claim 1, the first and second viscoelastic bodies are subjected to quinoid vulcanization (rubber vulcanization method using P-quinone dioxime) or secondary vulcanization. 1. An optical or magneto-optical disk recording and reproducing device characterized in that it is made of rubber that hardly generates sulfur when left untreated.