JPH04126398U - optical disk device - Google Patents

Abstract

(57) [Summary] [Structure] A wing member 29 is attached from the clamp of the spindle motor that chucks the hub 53 of the optical disk 51 to the rotating shaft 21. When the spindle motor rotates when driving the optical disk device, this drive coil 25 generates heat, which heats the air within the motor housing 13. This warm air is sucked by the wing member 29 and blown onto the objective lens 47 of the optical head 41. [Effect] By blowing warm air onto the objective lens 47, dew condensation and spray mist condensation on the objective lens 47 are prevented, and dust is not blown away and accumulated. It is only necessary to attach the wing member 29, and no special cleaning mechanism or drive means are required.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention uses an objective lens for optical disks (including magneto-optical disks, etc.). For more information on optical disc devices that record and play information using light irradiation, please refer to this section. The present invention relates to a cleaning mechanism for an object lens.

0002

[Conventional technology]

Reads information recorded on optical discs, writes information, and erases information. Optical disk devices generally do not store information, unlike sealed fixed hard disk devices. Replaceable type that uses optical disk cartridges that are replaced when reading and writing. It is a recording/playback system.

0003 Therefore, the objective lens of the optical head used for recording and reproducing optical discs is There has been a problem in that foreign matter such as dirt and dust tends to adhere to it. In addition, due to environmental changes, etc. Condensation may occur and condensation of the spray mist may occur. Spray on the objective lens. If the ray mist condenses or dust accumulates, the playback signal deteriorates and playback failure occurs. Resulting in.

0004 As a countermeasure against such dirt and dust, the optical pickup (optical head) should be evacuated. A brush is attached to the position, and when a decrease in the output level of the playback signal is detected, Move the optical pickup to the retracted position, move it back and forth at the retracted position, and use the brush to It is suggested to scrub the objective lens to clean the dust on the objective lens. (Japanese Unexamined Patent Publication No. 168437/1999).

[0005] However, this method requires special cleaning tools such as brushes and reciprocating mechanisms. It requires parts and mechanisms, and although it can remove dust, it cannot remove spray mist. I can't. In addition, in order to scrub the objective lens with a brush, There is a possibility of injury. Furthermore, if cleaning with a brush is continued for a long period of time, the brush may become damaged. Dust accumulates, and conversely, this dust migrates to the objective lens and recontaminates it. Also, By rubbing the objective lens with a brush, static electricity is generated on the objective lens, which can cause There was a problem with attracting dust.

[0006]

[Problem that the idea aims to solve]

This invention eliminates the need for special parts for cleaning the objective lens. The objective is to provide an optical disc device in which dust and spray mist on the disc can be easily removed. Ru.

[0007]

[Means to solve the problem]

The optical disc device of the present invention is The optical disc is rotated by a motor, and the objective lens of the optical head emits light. An optical disc device that records and/or reproduces information by irradiating an optical disc with In, An opening is provided in the housing of the motor, and a blade is provided on the rotating shaft of the motor. Attach the member and rotate the wing member to direct the air inside the motor housing to the objective lens. It is characterized by being designed to lead to the user's needs.

[0008]

[Effect]

When recording and reproducing information, the motor always rotates and is fixed to the motor's rotating shaft. The wing member rotates. The blade member handles the heat generated by the drive coil inside the motor housing. It sucks in warmer air and blows it as warm air to the objective lens of the optical head. Put on. The current plate can also efficiently guide the hot air toward the objective lens.

[0009]

【Example】

FIG. 1 is a sectional view showing an embodiment of the present invention, and shows a spindle module of an optical disk device. It shows the vicinity of the data. FIG. 2 is a top view of FIG. 1 with the optical disc removed.

0010 A spindle motor is fixed to the housing base 11 of the optical disc device. Ru. The spindle motor includes a motor rotating shaft 21 fitted in a bearing 19, and a motor rotating shaft 21 fitted in a bearing 19. A rotor 23 consisting of a permanent magnet fixed to the housing base 11, a drive fixed to the housing base 11 It consists of a coil 25 and a motor housing 13. motor housing 13 is provided with a side opening 15 and a top opening 17. The motor rotation shaft 21 has , a clamp 27 for chucking the hub 53 fixed to the optical disk 51 is fixed. The wing member 29 is fixed from the side wall of the clamp 27 to the motor rotation shaft 21. It is.

[0011] When the optical disk device is driven, the optical disk 51 is brought into the device from outside. Then, the hub 53 of the optical disc 51 is chucked by the clamp 27. Next, spin The optical disc 51 is rotated by the rotation of the handle motor. The optical head 41 is an optical disk Coarse access drive is performed to 51 target recording tracks, and objective lens actuation is performed. The bobbin carrying the objective lens 47 is moved along the actuator axis 45 by the tuator 43. focuses and tracks the optical disc using the objective lens 47. Light is irradiated onto 51 recording tracks to form an image.

0012 At this time, the air inside the motor housing 13 is heated by the heat generated by the drive coil 25. The temperature is higher than the surrounding area. Due to the rotation of the spindle motor , the blade member 29 fixed to the motor rotation shaft 21 rotates, heating the inside of the motor housing 13. The air is sucked through the top opening 17. This heated air can be supplied directly or through a rectifier plate. 31 (straightening member) and is blown onto the objective lens 47. Also, a new sky Air is drawn into the motor housing 13 through the side opening 15 and supplied to the drive coil 25. Heats up due to heat generation.

[0013] The air blown onto the objective lens 47 blows away the dust on the objective lens 47, Prevent its accumulation. Also, due to the heat generated by the drive coil 25, this air is constantly Since the temperature is higher than the ambient temperature of the I can do that.

[0014]

[Effect of the idea]

According to this invention, warm air is always blown toward the objective lens while the spindle motor is driving. Since it can be attached, it not only blows away dust but also prevents condensation and mist from adhering. You can also do that. In addition, since the heat generated by the motor, which is the drive source for the optical disc, is used, There is no need for a new heat source to generate hot air. Furthermore, the wing section attached to the motor Since it uses wood, there is no need for a new blower.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of an optical disc device of the present invention.

FIG. 2 is a top view of FIG. 1 with the optical disc 51 removed.

[Explanation of symbols] 11 Housing base 13 Motor housing 15 Side opening 17 Top opening 19 Bearing 21 Motor rotation axis 23 rotor 25 Drive coil 27 Clamp 29 Wing member 31 Rectifier plate 41 Optical head 43 Objective lens actuator 45 Actuator axis 47 Objective lens 51 Optical disc 53 hub

Claims (2)

[Scope of utility model registration request] 1. An optical disc device in which an optical disc is rotated by a motor and information is recorded and/or reproduced by irradiating the optical disc with light from an objective lens of an optical head, wherein an opening is provided in the housing of the motor; An optical disc device characterized in that a wing member is attached to the rotating shaft of the motor, and air within the motor housing is guided to the objective lens by rotation of the wing member. 2. The optical disc device according to claim 1, further comprising a rectifying member for guiding the airflow from the wing member to the objective lens.