JP3968716B2 - Cooling structure inside the housing - Google Patents

Description

  The present invention relates to a cooling structure inside a casing in which a lid is provided in front of a tray, and in particular, when the temperature inside the casing rises, the lid separates from the casing and outside air is taken in through the gap. The present invention relates to a cooling structure inside the casing that is cooled inside the casing.

Conventionally, in a disk device with a built-in optical pickup, turntable, etc., for example, a lid is integrally provided at the tip of the tray in the housing, and this lid is moved as the tray is inserted and removed. The opening provided on the front surface of the casing is opened and closed.
However, in this case, the lid can be opened only when the tray is taken out and the inside of the housing can be cooled by taking in outside air from the opening, but the lid is opened when the tray enters the housing. Since the portion is closed, there is a problem that outside air cannot be taken into the housing and the inside of the housing cannot be cooled.

The first prior art is shown in FIG. The cooling fan control actuator 120 includes a drive shaft 121 that is movably held at a fixed stroke, a bias spring 123 that biases the drive shaft 121 in the A1 direction, and a shape memory that is pressurized by the bias spring 123. An alloy spring 124 is provided, and the shape memory alloy spring 124 is deformed so that the rigidity increases and the free length increases when the atmospheric temperature inside the apparatus rises to a predetermined temperature or higher. As a result, the cooling fan control actuator 120 turns on the PB switch 115a to drive the cooling fan motor 115b. (For example, refer to Patent Document 1).
However, in this case, a cooling fan motor 115b is provided for cooling the atmospheric temperature inside the apparatus.

The second prior art is shown in FIGS. The shape memory alloy coil 205 is fixed to the bracket 208 and is in contact with one end of the moving plate 204. A bias spring 203 is contracted between the other end of the moving plate 204 and the bracket 207. As the temperature rises in the apparatus, the shape memory alloy coil 205 rises and expands against the spring force of the bias spring 203, moves the moving plate 204, and opens the ventilation hole 202. Thereby, the internal temperature rise of the apparatus is suppressed. When the inside of the apparatus becomes low temperature, the shape memory alloy coil 205 is reduced in temperature and contracts, and is pushed by the bias spring 203 to close the moving plate 203. (For example, refer to Patent Document 2).
However, in this case, two vent holes 202 are provided in the exterior 201.

The third prior art is shown in FIG. In the disc player in which the disc D is set in the player main body 302, the disc D is rotated, and the optical pickup is moved in the radial direction of the disc D so as to read the information recorded on the disc D. The dust-proof filter 305 provided at the rear of the ventilation port 304 formed in the front wall 303a of the casing 303, the opening / closing lid 306 disposed at the front of the ventilation port 304 so as to be openable and closable, and opened and closed at a normal temperature. The shape memory member 7 holds the lid 306 in a closed state. The shape memory member 7 detects that the ambient temperature in the player main body 302 has exceeded the set temperature and elastically deforms to detect the opening / closing lid 306. Is configured to open. (For example, refer to Patent Document 3).
However, in this case, the ventilation port 304 must be provided at another location where the disk mounting tray 209 is disposed.

The fourth prior art is shown in FIGS. 8 (a) and 8 (b). If the display 406 and the heat source module 407 in the housing 401 are energized to generate heat and the internal temperature rises, a restoring force is generated in the shape memory alloy 404, and the ventilation port lid 403 is pushed down to open the ventilation port 402. The body 405 is compressed. And if internal temperature falls and the restoring force of a shape memory alloy falls, the ventilation port lid | cover 403 will be pushed back by the restoring force of the elastic body 405 compressed, and the ventilation port 402 will be closed. (For example, refer to Patent Document 4).
The electronic device casing 401 had to be provided with the air holes 402, and the tray was not provided.

Japanese Patent Laid-Open No. 7-14376 JP-A-4-230097 JP-A-8-203262 JP-A-8-102591

  The present invention solves the above-described conventional problems, and when the temperature inside the casing rises, the lid can be automatically moved from the casing to the outside, and outside air can be taken in through the gap, An object of the present invention is to provide a cooling structure inside the housing that can always cool the inside of the housing with the outside air and can prevent a reading error or a failure due to high temperature due to the components inside the housing of the disk device.

The present invention has been proposed in order to solve the above-mentioned problems. The invention according to claim 1 is provided with a tray on which a disk is placed on an upper surface provided so as to be freely inserted and removed from an opening of a housing. A lid that is provided on the tray and closes the opening when the tray is accommodated in the casing; a turntable that is provided inside the casing and rotates the disk; and the turntable In the disk device comprising at least a drive source motor and an optical pickup that moves in the radial direction of the disk and reads information recorded on the disk, the lid is provided separately from the tray. , movably mounted thereto and out direction to the tray and from the center of one side via a support portion extending integrally towards said housing, said provided near positions of the motor Engaged with the front end portion of the lifting unit, said presses is moved toward the lid outwardly to the support portion when the temperature in the enclosure to return extend the original shape when the raised A shape memory spring that is spaced apart from the opening; and a spring that is disposed at a position below the support and is constantly urged in a direction to close the opening with respect to the lid. When the lid body is separated from the opening, the lid body is moved inward while compressing and deforming the shape memory spring by its own restoring force when the temperature in the housing is lowered. And a pull-back spring that closes the opening .

According to a second aspect of the present invention, there is provided a tray that is detachably provided through the opening of the housing and on which the disk is placed, and the tray that is provided on the tray and is accommodated in the housing. A lid that closes the opening, a turntable that is provided inside the housing and rotates the disk, a motor that is a drive source of the turntable, and a disk that moves in the radial direction of the disk. In a disc device comprising at least an optical pickup for reading recorded information, the lid is provided separately from the tray and is movable on the tray in the direction in which the lid is moved, and is located near the motor. is separated from the opening by moving outward temperature of the housing is provided presses the lid to wake extend the original shape when the raised And Jo storage spring, the relative lid provided so as to always urges in a direction of closing the opening, the housing of the state where the lid member by extension of said shape memory spring is separated from the opening temperature by moving the lid inward while compressing deforming the shape memory spring by a restoring force of itself when dropped, it has a spring for pulling back to close the opening portion by the lid member It is characterized by.

According to a third aspect of the present invention, the lid is provided on the tray so as to be movable in a loading / unloading direction via a support portion integrally extended from the inner surface central portion toward the inside of the housing. The shape memory spring is provided in an arrangement in which the shape memory spring is engaged with the distal end portion of the support portion in the vicinity of the motor, and is extended when the temperature in the housing rises to return to the original shape. The lid is moved outwardly by pressing the part and is separated from the opening .

According to a fourth aspect of the present invention, the shape memory spring is disposed at a central position in the casing near the motor, and the retracting spring is located at the same height with respect to the shape memory spring in the casing. In addition, a pair is arranged at symmetrical positions on both the left and right sides.

According to a fifth aspect of the present invention, a pair of the shape memory springs are disposed at symmetrical positions on both the left and right sides with respect to the motor in the housing, and the pair of the shape memory springs face each other. A support portion projects integrally from the inner surface of the lid, and the retracting spring is disposed at the same height with respect to the shape memory spring and at a central position between the shape memory springs.

According to the first aspect of the present invention, the lid that opens and closes the opening portion of the housing in which the tray enters and exits is provided on the tray so as to be movable in the direction in which the tray enters and exits. It closes the opening of the housing and fulfills the function of protecting the inside of the housing in the same manner as a lid fixedly provided on an existing tray. On the other hand, when the temperature in the housing rises during use of the disk device, the shape memory spring provided in the vicinity of the motor, which is the main heat source of the disk device, reliably senses the raised temperature and expands. However, when returning to the original shape, the lid is moved outward while pressing the support portion to be separated from the opening. This ensures that external air flowing into the housing from the gap formed between the lid and the opening to cool the parts inside the enclosure, in advance the occurrence of a failure due to a read error or a high temperature by the optical pickup Can be prevented. In particular, in this configuration, the existing lid provided in the tray separately from the tray, and arranged to be movable, required in a suitable timing by a spring for pulling back the lid and memory shape sprint grayed A rational and simple configuration that automatically moves in the direction of

According to the second aspect of the present invention, the lid that opens and closes the opening portion of the housing in which the tray enters and exits is provided on the tray so as to be movable in the direction in which the tray enters and exits. It closes the opening of the housing and fulfills the function of protecting the inside of the housing in the same manner as a lid fixedly provided on an existing tray. On the other hand, when the temperature in the housing rises during use of the disk device, the shape memory alloy provided in the vicinity of the motor, which is the main heat source of the disk device, reliably senses the increased temperature. It returns to its original shape while elongating, and when returning, the lid is pushed outward to be separated from the opening. As a result, the outside air flowing into the housing from the gap formed between the lid and the opening cools the components inside the housing, preventing the occurrence of reading errors due to the optical pickup and failures due to high temperatures. it can. In particular, in this configuration, the existing lid provided in the tray separately from the tray, and arranged to be movable, required in a suitable timing by a spring for pulling back the lid and memory shape sprint grayed A reasonable but simple configuration that automatically moves in the direction of.

  According to the third aspect of the present invention, since the lid body is provided so as to be movable to the tray via the support part integrally extending to the lid body, the lid body can be smoothly moved in and out of the tray. It can be moved and reliably contacted and separated from the opening. In addition, since the shape memory spring is provided so as to be engaged with the tip of the support portion, the shape memory spring is used as a cover through the support portion when the shape memory spring is extended while using the short shape memory spring. The body can be reliably separated from the opening, and the configuration can be downsized.

According to the invention of claim 4, the retraction spring, since a pair disposed relative to the housing of the central disposed shape memory spring located at symmetrical positions on the left and right sides, uniform the lid It can be smoothly moved toward the opening in a stable posture that is not tilted by being pressed by the pressing force. Moreover, the retraction spring, because it is arranged at the same height position with respect to the shape memory spring, the miniaturization can be achieved What FIG space saving inside the enclosure.

According to the fifth aspect of the present invention , a pair of shape memory springs are disposed at symmetrical positions on both the left and right sides with respect to the motor , and the pair of support portions are integrated with the lid body so as to face each other. Since the projecting configuration is adopted, the lid body can be smoothly moved from the opening portion toward the separation direction in a stable posture without being inclined by being pressed with an equal pressing force. Moreover, the retraction spring, because it is arranged at the same height position with respect to the shape memory spring, the miniaturization can be achieved What FIG space saving inside the enclosure.

Hereinafter, embodiments of a cooling structure inside a housing according to the present invention will be described with reference to the drawings.
1A and 1B show a cooling structure inside a housing according to a first embodiment of the present invention, in which FIG. 1A is a side sectional view showing a state in which the lid is closed, and FIG. 1B is a side view in a state where the lid is opened. Sectional drawing, (c) is a top view of the state which the cover body opened.

  As shown in FIGS. 1A, 1B, and 1C, the cooling structure inside the housing of the first embodiment includes a tray 3 that can be inserted into and removed from the inside of the housing 2 of the disk device 1. A turntable 5 for rotating the disk 4 set on the upper surface of the tray 3 is disposed at a substantially central position of the body 2, and a motor 6 for rotating the turntable 5 is disposed below the turntable 5, An optical pickup 7 for reading the disk 4 is disposed on the side of the turntable so as to be movable in the horizontal direction.

An opening 2 a is formed on the front surface of the housing 2, and a lid body 8 that opens and closes the opening 2 a is provided. Between the lid body 8 and the inside of the housing 2, A shape memory spring 9 that returns to its original shape when the temperature rises is disposed on the distal end side of the support portion 8 a that extends from the substantially central portion on the inner surface side of the lid 8 toward the inside of the housing 2. Has been.
Further, a pulling spring 10 for pulling back the lid 8 in the closing direction is disposed at a lower position of the shape memory spring 9.
When the temperature in the housing 2 rises, the shape memory spring 9 extends long and the lid body 8 moves away from the housing 2, and the inside of the housing 2 is cooled by the outside air taken in through the gap 11. Further, when the temperature in the housing 2 is lowered, the lid 8 is moved toward the housing 2 by the restoring force of the pullback spring 10 so as to be closed.

  Therefore, according to the first embodiment, when the temperature inside the housing 2 of the disk device 1 rises, the shape memory spring 9 extends long and the lid 8 can be automatically moved from the housing 2 to the outside. Thus, outside air can be taken in from the gap 11 and the inside of the housing 2 can always be cooled with outside air, and reading errors due to electrical components inside the housing 2 of the disk device 1 and failure due to high temperature can be prevented. Can do.

FIG. 2 is a plan view showing a cooling structure inside the housing of the second embodiment. In addition, the same code | symbol is described to the same member and the same location in above-described 1st Embodiment, and the description is abbreviate | omitted.
In the cooling structure inside the housing of the second embodiment, as shown in FIG. 2, the shape memory spring 9 is disposed at a substantially central position in the housing 2, and the pull-back spring 10 is arranged on the left and right sides in the housing 2. A pair is arranged on both sides.
Therefore, according to the second embodiment, the shape memory spring 9 and the pull-back spring 10 can be disposed at the same horizontal position in the vertical direction in the casing 2, and space saving in the casing 2 is achieved. be able to. Moreover, the lid 8 can be moved in the direction of being uniformly closed without being inclined by the restoring force of the pair of left and right pullback springs 10.

FIG. 3 is a plan view showing a cooling structure inside the housing of the third embodiment. In addition, the same code | symbol is described to the same member and the same location in above-described 1st Embodiment, and the description is abbreviate | omitted.
As shown in FIG. 3, in the cooling structure inside the housing of the third embodiment, a pair of shape memory springs 9 are provided on both the left and right sides in the housing 2, and the retracting springs 10 are arranged in the housing 2. It is disposed at a substantially central position.

Therefore, according to the third embodiment, the shape memory spring 9 and the pull-back spring 10 can be disposed at the same horizontal position in the vertical direction in the casing 2, and space saving in the casing 2 is achieved. be able to. Moreover, when the temperature inside the housing 2 rises, the pair of left and right shape memory springs 9 can move the lid 8 in the direction of opening uniformly without tilting.
In each of the above embodiments, the cooling structure inside the housing of the disk device has been described. However, the present invention is not limited to the disk device, and can naturally be applied to the cooling structure inside the housing of other electrical devices.

The cooling structure inside the housing | casing of 1st Embodiment is shown, (a) is side sectional drawing of the state in which the cover body is closed, (b) is side sectional drawing of the state in which the cover body is opened, (c) FIG. 4 is a plan view of a state in which the lid is opened. It is a top view which shows the cooling structure inside the housing | casing of 2nd Embodiment. It is a top view which shows the cooling structure inside the housing | casing of 3rd Embodiment. It is a block diagram which shows the conventional optical disk drive device. It is a fragmentary sectional view which shows a state in case the internal temperature in the conventional vent hole opening / closing apparatus for heat radiation is low. It is a fragmentary sectional view showing a state in case the internal temperature in the device is high. It is a longitudinal cross-sectional view of the disc player provided with the conventional heat radiating device. FIG. 2A is a cross-sectional view showing a state when a temperature inside the casing is increased, and FIG. 2B is a sectional view showing a state when the temperature inside the casing is lowered. .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disc apparatus 2 Housing | casing 2a Opening part 3 Tray 4 Disc 5 Turntable 6 Motor 7 Optical pick-up 8 Lid 8a Support part 9 Shape memory spring 10 Retraction spring

Claims (5)

A tray provided so that it can be freely inserted and removed from an opening of the housing and on which a disk is placed; and a lid provided on the tray that closes the opening when the tray is accommodated in the housing; A turntable provided inside the housing for rotating the disk; a motor as a drive source of the turntable; an optical pickup that moves in a radial direction of the disk and reads information recorded on the disk; In a disk device comprising at least
The lid is provided separately from the tray, and is provided in the tray so as to be movable in and out of the tray via a support portion integrally extended from the central portion of the surface toward the inside of the housing. And
Engaged with the front end portion of the supporting portion provided in the vicinity portion of the motor, the presses the support portion when the temperature of the housing is returned to extension to the original shape when the raised A shape memory spring that moves the lid outward and separates it from the opening ;
A state in which the lid is disposed at a position below the support and is always urged in a direction to close the opening with respect to the lid, and the lid is separated from the opening by extension of the shape memory spring. A retracting spring that moves the lid inward while compressing and deforming the shape memory spring by its own restoring force when the temperature in the housing decreases, and closes the opening by the lid. A cooling structure inside the housing , characterized by comprising: A tray provided so that it can be freely inserted and removed from an opening of the housing and on which a disk is placed; and a lid provided on the tray that closes the opening when the tray is accommodated in the housing; A turntable provided inside the housing for rotating the disk; a motor as a drive source of the turntable; an optical pickup that moves in a radial direction of the disk and reads information recorded on the disk; In a disk device comprising at least
The lid body is provided separately from the tray, and is provided on the tray so as to be movable in and out of the tray.
From the opening by moving outward by pressing the lid at the time of returning the temperature of the housing is extended when the rising is provided in the vicinity portion of the motor to the original shape A shape memory spring to be spaced apart ;
When the temperature in the casing is lowered in a state where the lid is separated from the opening due to the extension of the shape memory spring, which is provided so as to constantly urge the lid in the direction of closing the opening. wherein moving the lid inward while compressing deforming the shape memory spring by a restoring force of itself, characterized in that it comprises a spring for pulling back to close the opening portion by said top housing Cooling structure inside the body. The lid body is provided in the tray so as to be movable in and out of the tray via a support portion integrally extended from the inner surface central portion toward the inside of the housing,
The shape memory spring is provided in an arrangement that engages with the tip of the support portion in the vicinity of the motor, and extends when the temperature in the housing rises to return to the original shape. The cooling structure inside the housing according to claim 2, wherein the cover is moved outwardly by pressing and separated from the opening . The shape memory spring is disposed at a central position in the casing close to the motor, and the retracting spring is located at the same height with respect to the shape memory spring in the casing and at symmetrical positions on both the left and right sides. The cooling structure inside the housing according to claim 2, wherein a pair of the cooling structures are arranged. A pair of the shape memory springs are disposed at symmetrical positions on both the left and right sides with respect to the motor in the housing, and the pair of support portions are opposed to the two shape memory springs from the inner surface of the lid body. Projecting together,
The cooling structure inside the housing according to claim 3 , wherein the pull-back spring is disposed at the same height with respect to the shape memory spring and at a central position between both shape memory springs .

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