JPH0344834A - Disk recording and reproducing device - Google Patents

Abstract

PURPOSE:To improve the dustproof function by covering a lens with a cover during nonuse of a disk and also a disk inserting hole and even the whole device with a filter, cleaning the surface of the lens for a fixed period automatically with a brush and opening a lid after cutting off a laser switch in the case of manual dust removal. CONSTITUTION:In order to make the positive dustproof, the lens 1 is covered with a cover 4 in a retreating position of a pickup part, and an opening part is covered with a spongy filter 10, while the disk inserting hole with a lid 7 equipped with a porous material around itself. In terms of the automatic function, after a certain period of time, the lens 1 of a pickup is positioned to the tip of the brush 34 engaged with a case 12 for housing the disk and then slid. In addition, in terms of a built-in type operation for manual handling, the lid that is slid to open and close is provided on the top surface, and a key top of an on/off switch for laser irradiation is engaged with this lid, whereas for a stand-alone device, a hole part is covered with a lid surrounded by a viscoelastic substance in its whole circumference and capable of turning right and left, and the lid is fixed to the top surface with screws. By this method, the dustproof, dust removal and heat radiation positively are performed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a dustproof function, an automatic and manual dust removal function, and a heat dissipation function in an optical or magneto-optical disk recording/reproducing machine, and enables long 1t11 writing even in a dusty environment. .

The present invention relates to a dustproof and heatproof device that can ensure read performance.

[Conventional technology]

Conventional devices have a dustproof wall for dust prevention, and an automatic or manual dust removal function that uses a brush to clean the top surface of the lens in conjunction with the disk insertion operation. Related devices of this type include, for example, Japanese Unexamined Patent Publication No. 62-24449.
No., JP-A-63-52339, etc.

[Problems to be Solved by the Invention] The above-mentioned prior art is not concerned with the function of actively preventing dust from adhering to the lens, but with the method of providing a dust-proof wall and cleaning the adhering dust. Alternatively, there is a problem in that the interval until the lens becomes unreadable and requires automatic or manual lens cleaning is short.

In addition, regarding dustproof walls, simply surrounding the area with a wall takes up too much space, and because ventilation is not taken into consideration, the temperature rises during use and exceeds the guaranteed performance temperature range of the circuit elements, resulting in unsatisfactory device performance. was there.

An object of the present invention is to provide a concrete device that is equipped with a dustproof function, an automatic and easy-to-use manual dust removal function, and a heat dissipation function.

[Means to solve the problem]

In order to achieve the above objective, in order to actively prevent dust, when the pickup unit reaches the writing or reading area on the disk surface, the cover that covers the lens is released at the retracted position by this movement, and the opening has a spongy shape. The disk insertion opening was always covered with a lid surrounded by porous material.

In addition, in order to automatically remove dust, after a certain period of time there is a control unit that positions and slides the pickup lens on the tip of a brush that is engaged with the case that houses the disc, and a switch that instructs this sliding from the outside. It was established.

Furthermore, for manual dust removal, the built-in type device was provided with a lid on the top surface that slid to open and close, and the key top of the switch for turning ON and OFF the laser irradiation was engaged with this lid. For the stand-alone device, the entire circumference was surrounded by a viscoelastic material, the hole was covered with a lid that rotated left and right, and it was screwed to the top.

Furthermore, to dissipate heat, an opening is provided around the periphery, which is covered with a spongy filter, and a spring is used to make it removable.

It is secured with screws, etc.

[Effect]

When the disk is not in use, the lens is covered with a cover, and the disk insertion slot and the entire device are also covered with a filter, so that compared to leaving the lens exposed all the time, the infiltration of dust is much smaller and the dustproof effect is improved.

Since the top surface of the lens is automatically cleaned with a brush at regular intervals, there is relatively little adhesion due to long-term changes after dust has adhered, and the dust removal effect is improved.

In addition, manual dust removal can be configured to turn off the laser 0N-OFF switch and open the lid, thereby preventing the laser from writing off.The benefit of a stand-alone device is that it is dust-proof because the opening is usually covered with rubber. This hole made it possible to safely and easily clean the top surface of the lens.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 21.

1.5.10 shows a recording and reproducing device of an optical disk machine, which is housed in a pickup case 2 with a laser irradiation lens for writing and reading, and this lens 1 is used to write on the disk 3 shown in FIGS. 5 and 6. Or, when it is located in the unreadable part 3CL, as shown in Fig. 3, the dustproof cover A4 provided on the top surface of the PU case 2 is provided on the unit part 5 to prevent movement of the case 2 in the direction of arrow (A) in the figure. When the cam 6 is engaged with the cam 6, it covers the rotary lens in the clockwise direction in the figure. Further, when the pickup moves to the write/read section, the lid rotates counterclockwise and the lens is exposed. Therefore, dust does not adhere to the top surface of the lens element when no disk is inserted.

Also, this entire device is described in Section 1.4. ．． As shown in Figure 7, when the disc is not inserted, the lid B7 is moved from the inside of the opening 9cL of the front panel 9 all around by the spring A8 to the cavernous body AIO.
Blocked through. Then, the lid C14 is used to position the cassette 1 containing the disc 3 on the recording/reproducing means.
As shown in Fig. 1.7, the rotating shaft portion 13 is attached to the frame 1G.
The lever 3 that rotates when the CL is locked is the cassette)
As a result, the lid C14 is pushed down by the tip 13b, and the case 12 is pushed backward and then downward from the state shown in FIGS. 5 and 8. The stand 12c provided on the storage case 12 is similarly moved backward and then downward, and the lever 13 is rotated clockwise in the figure to raise the lid C↓4 together with the spring B15. Rotate the lid B7 backward and open the opening 9α of the front panel 9 into the corpus cavernosum ↓
Close via O. This prevents dust from entering through the opening 9α of the front panel 9.

In addition, the entire device is wrapped with a porous breathable filter 17 as shown in Figures 1, 10, and 11, and holes 18b are made in the bottom surface ↓8 (L or side surface, etc.) of the fuco case 18 etc. to allow ventilation.

Regarding the dust prevention, dust removal, and heat dissipation of the standalone device that incorporates the disk drive device, there are some items in which the usage environment in the market is not clear, and the standalone device itself generates heat, so it is shown in Figures 12 to 15. Like chassis 22. Left and right B joints 22α, which are the engagement portions of the cover 23;
22b with a spongy body B24, and a ventilator 25 equipped with a filter is installed on the left and right sides of the cover 23.
Cavernous body C2 with rough eyes or pores closer to the inlet
The hook portion 27 of the leaf spring 27 is closed with 6 (L is engaged with the hole 23b of the cover and fixed).

Further, a ventilation hole 29 is provided in the front part of the front panel 28, and the corpus cavernosum D30 is locked with the hook part 31CL of the leaf spring 31. This method may be implemented in a built-in type of device as shown in FIG.

Considering the case where even if the above dustproof measures are implemented, dust may infiltrate through the small gap in the device and adhere to the lens. A brush 34, which is secured to a metal fitting 33 equipped with a screw hole at the rear of a certain storage case 12, is secured with a screw 35 as shown in FIG. Also, as shown in FIG.
The hole positions of the metal fitting 33 and the case 12 are designed so that the metal fittings 33 and the case 12 are in contact with each other.

The control of this brush 34 will be explained according to the 21st system showing a block diagram of the functions of the present disk drive device. If you operate the cleaning operation interval setting switch in the input block in the same figure and select the interval at which this brush 34 slides against the lens 1, for example - once a week, the control block will send a signal to the disk insertion/ejection mode linear mode. The amount of dust that falls off after contacting and sliding is measured by the output level after passing through lens 1 (not shown in the figure), and the activity is stopped when it reaches a certain level that is higher than the writing/reading level. It has become.

Or it may be set to be active for a certain period of time. (If the amount of dust attached to the lens 1 is detected and the brush is moved to slide, even if there is only a small amount of dust attached, after a certain period of time it becomes difficult to remove depending on the type of dust, so this cleaning interval was set. ) Also, during this cleaning, the LEDs provided on the front panel 9 shown in FIG. 10, for example,
9a will be displayed by lighting the lens cleaning switch (Fig. 9, 37.2).
(Fig. 1) can be activated freely by pressing it from the outside.

Also, in the same figure, the lens cleaning operation is not completed.
If ED9a remains lit, dust may accumulate on lens 1.
In this case, it is necessary to manually replace the brush 34 or clean the lens with a cotton swab or the like. Therefore, as shown in FIG. 10, the top surface of the disk drive device in Building 1-Intive is divided into a top lid 38 and a cover 39, and a hole 39a is provided in the cover.
8 closes the hole 39cL as shown in the figure, and when the recess 38α is pushed in the direction of the arrow in the figure with a flathead screwdriver, the stud 18c provided in the bottom case 18 engages and slides with the elongated hole 38b, as shown in the first upper figure. The upper surface of the brush 34 can be opened, and the brush 34 can be easily replaced or the surface on the lens can be cleaned from this hole 39CL. Also, when the top cover 38 is initially rotated, the key top portion 40 of the ○N/○FF switch 40 is irradiated with laser light as shown in FIGS. 21 and 10.
By opening the α and cutting the leather, it was cheaper than the operation performed by service personnel.

To clean the stand-alone type lens ↓ and replace the brush 34, use the screw 42 in the hatch 41 as shown in Figures 16 to 18.
Loosen the coil spring 43 shown in the same figure, and the hatch 41 with the rubber 44 comes off from the cover surface 23c, and then turn it clockwise as shown in Figure 17 to remove the hole 2 of the cover 23.
This can be easily done by moving the built-in type top lid 38 from 3c as described above.

The above embodiments have the effect of proactively performing dust prevention, dust removal, and heat radiation.

〔Effect of the invention〕

According to the present invention, the lens is a lid, the part 1180 inside the device b is a filter, and the cassette insertion port is covered by the filter and the lid, so the dustproof effect is high and errors in writing and reading are small.

In addition, the top surface of the lens is regularly cleaned to prevent dust from accumulating. Furthermore, the device is easy to use because dust can be removed from the top surface of the lens while the disk is housed in the device.

In addition, the filters used are arranged in order of roughness of the holes from the suction surface, so they can be dust-proof and can be collected.Used filters can be easily replaced, and by always using new filters, performance deterioration due to dust can be prevented. can.

In addition, since the filter is made of H8 cotton-like material, it is breathable and can dissipate heat by providing an air blower, which can solve the problems caused by dust and heat at the same time. In addition, dust removal is easy because the cleaning operation can be performed from outside by simply pressing a button.

Additionally, since laser irradiation can be turned off simply by opening the lid of the device, it is also possible to replace the brush and manually remove dust from the lens easily and safely.

[Brief explanation of drawings]

1, 5, and 10 are perspective views including a partial sectional view of the disk drive device, and FIGS. 2 and 3 are partial plan views of the 0 part O part in FIG. 1, respectively, viewed from the top. Fig. 4 is an enlarged view of O in Fig. 1, Fig. 6 is a sectional view taken along line A-A in Fig. 5, Fig. 7 is an enlarged perspective view of section O in Fig. 1, and Fig. 8 is an enlarged view of section O in Fig. 5. FIG. 9 is an enlarged perspective view of the cassette 11 shown in FIG.
Figure 7 is a perspective view of the stand-alone device, and Figure 2 is the 13th
14 is an enlarged perspective view of part ○ in Fig. 13, Fig. 15 is an enlarged perspective view of part 0, Fig. I6 is a plan view of a part of Fig. 18, and Fig. 17 is FIG. 19 is an exploded view of the brush, FIG. 20 is a sketch of the operation of the brush and lens, and FIG. 21 is an overall block diagram. 1...Lens, 2...Pickup case, 3...Disk, 4...Dustproof MA, 5...Unit part, 6
...Cam, 7...Lid B, 8...Spring A, 9.
・Front panel, 10... Cavernous body A, 11... Cassette, 12... Case, 13... Lever, 14...
・MC515... Spring B, 16... Frame, 17... Porous material, 18... Soko case, 19.
22...Chassis, 23...Cover, 24...
・Corporal body B, 25... Ventilator, 26... Corpus cavernosa C12
7...Itabane, 28...Front panel, 29.
... Vent, 30... Cavernous body D, 31... Itabane,
32...Arm, 33...Metal fittings, 34...Brush,
35...Screw, 37...Cleaning switch, 3
8...Top lid, 39...Cover 40...Switch, 4
1...Hatsuchi, 42...Neji, Daiyakuzu 5 Yami Atsushi (0 閏3'Ia. KA)rozu certain 18 Izudachi 9 Izumo 21 Illustrated procedure amendment (method) Person making the amendment 11 relationship with the matter

Claims (1)

[Claims] 1. In a recording and reproducing device that optically, magnetically, or magneto-optically writes and reads information on a recording or reproducing medium, the top of a storage case or outer case of a disc or a cassette containing a disc is used. A brush is provided at the rear of the surface and at the fixed part of the device, and when the storage case is at the position where the disc or cassette is ejected or on the recording/reproducing means, the top surface of the lens of the pickup is brought into contact with the tip of the brush to control the device. 1. A recording/reproducing device comprising a means for slightly displacing a lens or a storage case, and for removing dust by sliding the lens and a brush. 2. In the device according to claim 1, when the pickup and lens are in a position where recording and reproduction of the inner or outer circumference of the disc cannot be performed, the top surface of the pickup and the lens can be closed with a rotatable lid (A) provided on the pickup body or a stationary part thereof. When the pickup and lens reach the recording or playback position, the lid (
When the part with a small rotation radius at one end of A) engages and rotates with a cam provided on the stationary part or pickup part of the device, the lid (A) moves from the top surface of the lens and becomes capable of writing and reading. A distinctive recording and reproducing device. 3. In the device according to claim 2, a brush having a minute length is provided on the sliding surface of the lid (A) with the lens, so that the pickup and the lens finish moving from a position where recording and reproduction cannot be performed to a position where recording and reproduction can be performed. A device characterized in that the brush slides on the lens surface up to the point where the brush slides on the lens surface. 4. The apparatus according to claim 1, comprising means for generating a signal for periodically starting the cleaning operation from the control section of the apparatus, and means for controlling the generation cycle and activation from the outside, and after the cleaning operation is completed, A recording/reproducing device characterized in that a control section is configured to return to a previous state. 5. In the device according to claim 1, the cleaning operation is performed until the laser output increases to a certain level, and an LED provided on the front panel etc. is turned on so that the indication that the cleaning operation is in progress can be determined from the outside. A recording/reproducing device characterized by being provided with a display means such as the above. 6. In the device according to claim 1, holes large enough to allow ventilation are provided on each surface of the outer case or the inner case for dust-proof heat radiation, and the holes are made of a ventilated piece or an inlet. Cover with several rough, spongy filters, etc., and fix the surrounding area with adhesive, etc., or use leaf springs or screws to lock the filters, and make the filters removable, and install filters for ventilation and heat dissipation as necessary. A built-in or stand-alone type recording and reproducing device characterized by being equipped with a blower. 7. In the device according to claim 1, there is provided on the top surface of the recording and reproducing main body so as to enable cleaning of the brush fixed to the case using manual screws or elastic deformation, cleaning of the interchangeable lens with a cotton swab, etc. A lid (B) that opens and closes by moving back and forth or left and right is provided, and the key top of the switch that engages with the initial movement of the lid (B) and turns on and off the laser output is opened and released by the initial movement. A built-in type recording/playback device that is characterized by stopping output. 8. In the apparatus of claim 7, cleaning the brush, lens, etc.
For the purpose of replacement, an opening is provided at the top of the lid (B), the surrounding area is covered with a viscoelastic material, and the opening is opened and closed by rotating from side to side. A recording/reproducing device characterized by being provided with a lid (C) fixed with a spring or the like. 9. In the apparatus of claim 1, a lid device for closing an opening into which a disc or cassette of a recording/reproducing device is inserted has a rotating shaft at the rear and rotates up and down to open and close; It consists of two lids that can be opened and closed by folding down, and the center longitudinal direction of each rotation axis is parallel to each other. 1. A device characterized in that when the lids are moved, each lid is rotatably locked independently so that one of the lids is always closed, and a cavernous body filter is provided around the entire circumference of the lid or around the opening to prevent dust. 10. In the device according to claim 1, the lid device for closing the opening for inserting the disk or cassette of the recording/reproducing device has a rotation center at the upper end and a lid that opens rearward at the top and a lid that opens and closes by moving up and down. A long piece member consisting of two separate lids (B), whose longitudinal axis centers or movement centers are parallel to each other, and which functions to raise the lid (B) when the cassette is moved when it is stored. When (B) is fully raised due to the spring force, it overstrokes and makes contact with the lid (B) to maintain a gap, and when the lid (B) is fully raised, the lid (A) is moved upward. The cassettes that have been pushed and stored should not come into contact with the lid (a), and the two lids (a) and (b) can be rotated independently or jointly by spring force or by movement of the cassettes into and out of the device. To prevent the two lids (a) and (b) from closing at the same time, install a spongy filter around the entire circumference of the lids (a) and (b) or around the opening. (b) When the opening is closed, the filter closes the gap in the opening to prevent dust.