JPH0391184A - Dustproof device for optical disk driver - Google Patents

Abstract

PURPOSE:To improve the radiation of heat and the dustproof effect by covering faces other than the face provided with a cassette insertion hole of an optical disk drive device of built-in type with a viscoelastic body like a resin film or rubber. CONSTITUTION:Faces other than the front faces provided with a cassette insertion hole 2 or the like of an outer case 1 of the optical disk drive device of built-in type are covered with a resin film 7, and a relaying lead wire 10 is covered with a viscoelastic body like rubber 11, and an aperture part 7b in the rear part of the film 7 is brought into contact with the periphery of a rubber 12 and is pressed with an elastic body like a spring 13. The external of a connector 10a of the relaying lead wire 10 is covered with a viscoelastic body like rubber 14. The relay code 10 or the connector 10a to a system of the built-in type device is pressed with the rubber 14 to stop the flow of air, and slight air permeability is kept but penetration of dust is prevented because the front face is not covered with the resin film. Thus, the radiation of heat and the dustproof effect are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dust prevention device that prevents dust from accumulating on an objective lens on an optical head of an optical disk device and causing reading failures.

[Conventional technology]

Some manufacturers of conventional equipment at certain destinations have implemented a method of looking at the front of the equipment, covering the built-in type part with a plastic bag, and connecting it to the system by inserting a connector or the like from above.

- As in-house methods, there were methods that used the insertion and ejection of a disk to clean the objective lens with a brush, and methods that automatically cleaned the objective lens with a brush.

Related devices of this type include, for example, JP-A-62-
No. 24449 is mentioned.

[Problem to be solved by the invention]

Among the conventional techniques mentioned above, the method of covering the built-in type device with a bag has a very large dustproof effect, but since the terminal part of the relay cord is inserted into the terminal part of the device together with the bag, problems such as poor contact between connectors occur. This was a possible problem.

In addition, the method of cleaning the objective lens with a brush has a large amount of dust, and is not very effective in removing dust in devices in which a blower for heat dissipation is provided on the rear surface of the device into which it is installed.

An object of the present invention is to provide a highly reliable dust prevention device that does not cause problems such as poor contact between connectors, and has a heat radiation effect that is not affected by the heat radiation blower of the device to be incorporated.

[Means to solve the problem]

In order to achieve the above purpose, we covered the built-in type unit with a resin film except for the front side where the cassette insertion slot etc. are located, covered the relay lead wire with a viscoelastic material such as rubber, and covered the rear opening of the film with a rubber It was brought into contact with the body and pressurized with an elastic body such as a spring.

In addition, the outer shape of the connector of the relay lead wire is covered with a viscoelastic material such as rubber.

[Effect]

The relay cord or connector for the system of built-in equipment is pressurized with rubber to stop the air flow, and is covered with a resin film so that the front is not covered, so there is a little air permeability, but it prevents dust from entering. I can do it. Therefore, it has heat dissipation and a great dustproof effect.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 6. 1st
．． 3, 4.6, reference numeral 1 indicates an outer case of a built-in type optical disc drive device, which is equipped with a door 2 on the front as shown in Fig. 1, and inside which is an objective lens 3 for reading the disc recorded contents. The system includes an optical head 4 equipped with a built-in optical head 4, and is incorporated into the middle of a case 5 of a stand-alone type system. In the figure, due to the rotation of the heat dissipation blower (small size) 6 provided in the case 5, air and dust enter the device through the gap 1a of the outer case l at the front as shown by the arrow (A). try to.

Then, the outer case is covered with a resin film 7 etc. at its front opening 7.
It is fixed with adhesive tape 8 except for a, and the power cord 9 is fixed as shown in the same figure. The entire circumference of the input/output lead wire 10 is made of rubber.
, rear opening 7b of resin film 7 covered with rubber B12
At the same time, as shown in FIG. 2, a spring 13 was used to apply pressure. Also, the gaps between the resin films 7 were covered with tape or the like as necessary.

In addition, as a similar method, as shown in FIG.
Close the gap with the connector with a rubber 14 with holes 14a and 14b smaller than each connector in part a, and also close the gaps 1a and lb on the rear surface of the case l, and cover the front surface with a resin film 7 as in Fig. 1. The other surface to be wiped was covered, and the joint was fixed with adhesive tape 8.

Furthermore, as shown in Figs. 4 and 5, there is a method in which the rubber B12 is deleted from the methods shown in Figs. If there is no storage space for the rubber B12, there is also a method of increasing the width of the rear opening 7b of the resin film 7 in the depth direction, as shown in FIG. 6, so that the storage section can be arbitrarily selected.

As mentioned above, according to this embodiment, there is a large dust-proofing effect, and since the front surface is not covered with a resin film, there is also a slight heat dissipation effect.

Furthermore, depending on the degree of sealing of the resin film 7 rubber 11 person output lead wire IO power cord 9, the rubber 11 is made of foamed rubber as shown in Figs.
It is also possible to widen it to one side to form a slit lb to simplify the component parts and the assembly method. Further, as shown in FIG. 8, the resin film 7 and the input/output lead wire 10 power cord 9 are sealed at the same time, and depending on the degree of sealing, the adhesive tape 15 is used.
There is also a way to add .

If the above-mentioned sealed device is incorporated into a stand-alone device (such as a system) 16 such as a personal computer that does not have a heat dissipation blower or does not have a cooling fan, the system 16 will be damaged as shown in FIG. An air intake hole 18 is provided in the housing (here, the bottom case) 17, which is the part that requires heat dissipation.
a, 18b, 18c, etc. are installed in other ventilation hole parts 1.
9a, 19b, etc. are blocked with foamed rubber 20, etc., and the ventilation path is nailed with the wall 21 foamed rubber 20, so that one side has forced ventilation or natural ventilation and the other has a weaker natural ventilation area for dust prevention and heat dissipation. An exhaust hole 23 is also provided in the upper part of the housing 17 to prevent dust and dissipate heat.

In addition, when the blower 24 is included in the system 16, dustproofing is achieved by satisfying the formula on the right. A>BA: Total area of the front opening of the built-in type optical disc drive device, B: Total area of the opening of the portion covered with the resin film 7, etc.

〔Effect of the invention〕

According to the present invention, except for the surface provided with the cassette insertion slot of a built-in type optical disc drive device, the other surfaces are covered with a resin film or a viscoelastic material such as rubber.
Even if installed in a system equipped with an exposed blower for heat dissipation at the rear, the air passing through the objective lens from the front is almost completely eliminated because the left, right, top, and rear are covered with resin films, etc., and the inside of the device is airless. The dust-proofing effect is greatly improved, and since connectors such as lead wires are connected directly, the original performance can be demonstrated, and since the front of the device is not covered with a resin film, there is adequate ventilation and complete protection. It is not sealed tightly, and a small amount of heat is dissipated, allowing the operating temperature of the components to be kept within the operating temperature range. As a result, the reduction in efficiency due to reading errors in the device is significantly reduced, and the availability of the entire system is greatly improved.

[Brief explanation of drawings]

1 to 9 show an embodiment of the present invention. Figures 1 and 9 are partial sectional views of a system equipped with a built-in type optical disk drive device, and Figure 2 is a partial cross-sectional view of a system equipped with a built-in type optical disk drive device.
3 and 4 are partial cross-sectional views of the connector connection portion of the optical disk drive device and its surroundings, and FIGS. 5, 6, 7, and 8 1 is a perspective view of a portion where a power cord lead wire is held down by rubber together with a resin film. Engineering: Shows the outer case of a built-in type optical disc drive device, 2: Door, 3: Objective lens, 4
...Optical head, 5.Stand-alone type system case, 6.
...Blower, 7...Resin film, 8
...adhesive tape, 9...1! source code, I
O...Input/output lead wire, 11...Rubber A, 12
...Rubber B, 13...Spring, 14...
・Rubber. 14a, 14b... Holes smaller than the connector. 15...adhesive tape, 16...system. I7... Housing (bottom case), 18a, IJlb, 18c - Suction hole, 19a
, 19b...Vent hole portion, 2o...Foamed rubber, 21.
...Wall, 22...Foamed rubber, 23...
・Exhaust hole, 24°°゛Blower・/3 2nd corpse 3 Enclosure 4th 5th g

Claims (1)

[Claims] 1. The left and right top and bottom surfaces of the built-in type part of the optical disk drive device, excluding the disk insertion surface, are covered with a tubular resin film, and the front opening of the film is covered with adhesive tape or the like to cover the outer case of the device. A lens-shaped viscoelastic member is inserted into the rear opening, and the periphery is sealed by applying pressure with a spring from above the resin film, and the viscoelastic member is attached to the center. A slit is provided in the longitudinal direction of the length, and when the slit is closed by applying pressure with the spring, a hole is formed that has the same cross-sectional shape as the wire but is smaller than that, from which the power cord and input/output lead wires can be pulled out. dustproof device. 2. In claim 1, the rear opening of the resin film is sealed with an adhesive tape or the like around a viscoelastic cover provided at the rear instead of the lens-shaped viscoelastic member, and The cover is fixed to the rear of the case with double-sided adhesive tape or screws, etc., and has a hole into which the connector of the input/output lead wire of the power cord is inserted, and the dimensions of this hole are made smaller than the external shape of the connector, etc. A dustproof device characterized by preventing air from flowing through this part after inserting a power cord, an input/output lead wire, etc., and closing a gap in the rear case with the elastic cover. 3. The dustproof device according to claim 1, wherein the rear opening of the resin film is lengthened so that the lens-shaped viscoelastic member can be fixed at any position. 4. In claim 2, another viscoelastic material having a saw-like shape with the connector insertion hole so as to be inserted into the connector insertion hole provided in the viscoelastic cover around the connector and sealed therewith. A dustproof device characterized by having a body.