JP2005243091A - Disk unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk unit of a slot-in system exclusive for a 12 cm disk, which is prevented from getting out of order by blocking penetration of a 8 cm disk into the disk unit. <P>SOLUTION: At a state that a disk support arm 17 is on standby for the carry-in of the 12 cm disk D, when the 8 cm disk Ds is inserted and the penetration into the unit can not be blocked by a holder 18 of the disk support arm 17, the penetration of the 8 cm disk Ds into the unit is blocked by the abutment of a front rim of the 8 cm disk Ds against an abutting part 19a of a stopper 19 mounted at the distal end of the disk support arm 17. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention drives an optical disc (for example, CD-R / RW, DVD-R / -RW / RAM / + R / + RW, etc.) as a recording medium for recording a large amount of information in information equipment such as various computer systems. More particularly, the present invention relates to a mechanism for preventing erroneous insertion of discs having different diameters.

  Generally, a disk device built in a personal computer (hereinafter referred to as a personal computer) or the like is usually provided with a disk tray for loading a disk, and the disk tray is configured to move forward and backward. Then, the disk loaded in the disk tray is driven in the main body of the disk device, and information is recorded or reproduced.

  On the other hand, as a system that does not use a disk tray, so-called slot-in type disk devices tend to be often employed, which is suitable for making a personal computer thinner and smaller. Since this slot-in type disk apparatus does not use a disk tray for loading (unloading) / unloading (unloading) a disk into the apparatus main body, when the operator inserts a majority of the disk into the slot, The loading mechanism is activated and automatically loaded.

  8 and 9 show the configuration and operation of the loading mechanism in a conventional slot-in type disk device. In the configuration shown in the figure, when the operator inserts the disc D, the disc D is inserted into the pin 100a at the front end of the first oscillating body 100, the left and right guide bodies 101 and 102, and the second oscillating body 103 from the middle. The position reaches the position shown in FIG. 8 while the height direction and the left-right position are restricted by the pin 103a at the tip.

  At this time, the first rocking body 100 is rotated in the direction of arrow 100A by pushing the tip pin 100a by the disk D, and the second rocking body 103 is also pushed by the disk D by the tip pin 103a being pushed by the arrow 103A. Rotate in the direction. Then, the switch lever 104 is pushed by the end of the second oscillating body 103 and rotates in the direction of the arrow 104A, and the detection switch 105 is operated.

  When the detection switch 105 is activated, the driving means 106 is started, and the movement of the first slide member 107 in the direction of the arrow 107A is started. The first slide member 107 and the second slide member 108 are connected at their respective ends by a slide connecting member 109, and the slide connecting member 109 is pivotally supported by a pin 110 so that the first slide member 107 and the second slide member 108 are pivoted. In synchronization with the retraction of the slide member 107, the second slide member 108 advances in the direction of the arrow 108A.

  Thus, when the first slide member 107 starts to move backward, the first rocking body 100 supported by the slide member 107 in a cantilever state is driven by the cam groove 107a of the first slide member 107. Since 100b is guided, the rocking body 100 rotates in the direction of the arrow 100B around the fulcrum 100c. As a result, the pin 100a at the tip of the first oscillating body 100 conveys the disk D in the direction of the arrow 107A until it abuts against the pins 111a and 111b of the disk positioning member 111.

  At this time, since the pin 103a of the second rocking body 103 rotates in the direction of the arrow 103A, the pin 103a of the second rocking body 103 is synchronized with the pin 100a at the tip of the first rocking body 100 and the disk D is rotated. It moves in the direction of arrow 103A while being supported. Then, after the disk D comes into contact with the pins 111a and 111b of the disk positioning member 111, the disk D rotates to a position slightly away from the disk D.

  The above is the operation mode of the loading mechanism when the disk D is carried into the apparatus, but the loading mechanism when the disk D is carried out of the apparatus is an operation mode opposite to the above-described operation. That is, when the disk D is in a fixed position inside the apparatus, when the driving means 106 is started in the reverse direction based on the unload instruction, the first slide member 107 starts to advance in the direction of the arrow 107B. Along with this, the second slide member 108 connected to the connecting member 109 starts to retract in the direction of the arrow 108B in synchronization. As a result, the first oscillating body 100 rotates in the direction of the arrow 100A and the second oscillating body 103 rotates in the direction of the arrow 103B, so that the disk is supported by the pins 100a and 103a at the leading ends and carried out of the apparatus. Will be.

In the disk apparatus configured as described above, the disk D carried into the apparatus is clamped by the clamp head 112 that moves up and down at a fixed position. The clamp head 112 is integrated with a turntable 113 fixed to the drive shaft of the spindle motor 114. Further, the spindle motor 114 is disposed on a frame member 115, and the frame member 115 is moved up and down by an elevating mechanism (for example, Patent Document 1).
JP 2002-117604 A

  The disk device thus configured is intended to accurately load a disk having a diameter of 12 cm into the disk device. That is, the loading mechanism for loading the disk into the disk device is for a 12 cm disk, and as shown in FIGS. 8 and 9, the pin 100a at the tip of the first oscillator 100 and the left and right guides. The bodies 101 and 102 and the pin 103a at the tip of the second oscillating body 103 are arranged so as to regulate the height direction and the left-right position of the 12 cm disc. The pins 111a and 111b of the disk positioning member 111 are also arranged to position the 12 cm disk. Therefore, the slot-in type disk device having such a configuration does not include the use of a small-diameter disk having a diameter of 12 cm or less.

  However, for example, when a small-diameter disk having a diameter of 8 cm is erroneously inserted from the slot due to carelessness of the operator, the small-diameter disk may be caught in the mechanism portion of the loading mechanism of the disk device or each mechanism portion may be damaged. Sometimes. In addition, the entire small-diameter disk may enter the disk device from the slot, making it impossible for the operator to remove the small-diameter disk. As described above, the conventional slot-in type disk device has a problem in that the disk device is erroneously inserted due to an erroneous insertion of a disk having a size different from the prescribed size.

  The present invention has been made in view of the above-described problems of the prior art, and even if a small-diameter disk is erroneously inserted from a slot by an operator as described above, the small-diameter disk is inserted into the disk device. It is an object of the present invention to provide a disk device that can reliably prevent entry and prevent device failure.

  In order to achieve the above object, the present invention is a disk device in which a disk having a specified outer diameter is loaded or unloaded by driving a support arm, and the support arm is waiting for loading of the disk. In the disk device, the disk apparatus is provided with a disk entry preventing means for preventing a disk having a diameter smaller than the prescribed outer diameter from being inserted from a disk insertion port outside a range that can be supported by the support arm.

  Further, the disk entry preventing means is a stopper having an abutting portion that contacts a front peripheral edge in the entry direction of a small-diameter disk, and the stopper is attached to the support arm. .

  The stopper attached to the support arm has elasticity, and when the front peripheral edge of the small-diameter disk presses the contact portion of the stopper, the small-diameter disk is moved in the carry-out direction by the elastic force generated by the pressing. It is characterized by being pushed back.

  Further, when the loading of the disc of the specified outer diameter is completed, and the support of the disc by the support arm is released, the contact portion of the stopper attached to the support arm is brought into sliding contact with the inner wall inside the device, An anti-vibration function for the support arm is generated.

  According to the present invention, even when a small-diameter disk is erroneously inserted from the slot by an operator, the small-diameter disk is reliably prevented from entering the disk device, and the failure of the device is reliably prevented. Can do.

  Hereinafter, a disk device according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a view showing the appearance of a slot-in type disk device 1 embodying the present invention. An opening 2a is formed at the center of a top plate of a chassis case 2 configured in a shield state. A convex portion 2b is formed on the peripheral edge of the opening 2a. A bezel 3 is fixed to the front end of the chassis case 2. The bezel 3 has a slot 3a into which a disc having a specified outer diameter, specifically, a disc D having a diameter of 12 cm is inserted, and an apparatus for the disc D accommodated therein. A push button 4 for instructing to carry out to the outside and an indicator 5 for displaying the operation state of the disk device 1 are provided.

  FIG. 2 is a plan view of the disk device 1 with the top plate portion of the chassis case 2 removed. In the figure, a base panel 6 is disposed in a chassis case 2, and a drive system unit A for a disk D is provided in a state of being disposed obliquely downward from the center thereof. In this drive system unit A, a frame member 8 that can be moved up and down in a horizontal state is released at a plurality of locations by a known buffer support structure 9 in order to release the state where the center hole Da of the disk D is clamped or clamped. It is connected to the base panel 6 at (three places in this embodiment). The drive structure of the frame member 8 may be a cantilever state in which one end is pivotally supported and the clamp head 7 is moved up and down by swinging the tip.

  At the front end of the frame member 8, a clamp head 7 is disposed at a position corresponding to the center of the disk D having a diameter of 12 cm that has been loaded and stopped. The clamp head 7 is integrally formed with the turntable 10 and is fixed to a drive shaft of a spindle motor 11 disposed immediately below. The disk D clamped on the clamp head 7 is driven to rotate by the spindle motor 11 and driven. Information is recorded / reproduced.

  Reference numeral B denotes a head unit supported by the frame member 8, and a carrier block 13 for reciprocating the optical pickup 12 in the radial direction of the disk D is a guide shaft having both ends fixed to the frame member 8. 14 and 15 and is reciprocated by a thread motor 16 and a gear unit (not shown).

  Reference numeral 17 denotes a disk support arm for guiding the disk D having a diameter of 12 cm to the inside of the apparatus and for pushing the disk D to the outside of the apparatus. When inserted, a stopper 19 is attached to prevent erroneous insertion and prevent entry into the apparatus. As shown in FIG. 3, the stopper 19 has a contact portion 19a that contacts the front periphery of the 8 cm disc Ds attached to the tip of the disc support arm 17 via an elastic portion 19b. More specifically, the locking portion 19 c of the stopper 19 engages with the locked portion 17 b provided at the tip of the disc support arm 17, and the locking claw 19 d of the stopper 19 is provided at the tip of the disc support arm 17. The stopper 19 is attached to the tip of the disk support arm 17 by being inserted into the through-hole 17c. In this embodiment, a leaf spring, which is an elastic body, is attached to the tip of the disk support arm 17 as a stopper 19. The detailed operation when the 8 cm disc Ds is erroneously inserted will be described later.

  A holder 18 that supports the end of the disk D is also fixed to the tip of the disk support arm 17. As shown in FIG. 3, the holder 18 has a receiving end 18a at the tip and a holding groove 18b at the side. The holder 18 is fixed to the disc support arm 17 by inserting the tip 17a of the disc support arm 17 into the support arm attachment port 18c and screwing it from the back side. By fixing the holder 18 to the disk support arm 17, the stopper 19 is prevented from being detached from the disk support arm 17. The holder 18 is entirely formed of a material having a high friction coefficient, or silicon rubber or the like is adhered to the receiving end portion 18a and the holding groove 18b so that friction resistance acts on the disk D. Also good. In this way, when the disk D that is being rotationally driven is released and the disk D is supported by the disk support arm 17, the holder 18 can quickly stop the rotation of the disk D.

  In addition, on the back side of the base panel 6, the loading motor 24 is driven to advance or retract the rack main body (not shown) as a transport mechanism in the chassis case 2. By moving the rack main body forward or backward, a link arm (not shown) connected to the rack main body is driven, and accordingly, the disk support arm 17 connected to the link arm swings. Become. In synchronization with this, the attracting arm 21 is swung by the lever arm 20 connected to the rack main body on the surface of the base panel 6 shown in FIG.

  Next, an operation mode of the disk device 1 when the operator inserts the 12 cm disk D will be described. In the configuration shown in FIG. 2, when the operator inserts the disk D, the disk D guides the disk D into the apparatus by the holder 18 and the attracting arm 21 of the disk support arm 17. In the figure, the state of the disk support arm 17 shown by a solid line is that the operator inserts the disk D from the slot 3a, and the front end of the disk support arm 17 is received in the receiving end 18a of the holder 18 at the tip of the disk support arm 17. The initial state of the generated state is shown.

  When the operator pushes the disk D into the apparatus from the initial state, the disk support arm 17 swings backward. Although not shown, an angular position detection switch of the disk support arm 17 disposed on the back surface of the base panel 6 detects the drive start position.

  When the driving start position is detected, the loading motor 24 is driven, and the transport mechanism starts driving. Then, the rack main body starts to move backward, and the pulling arm 21 swings as the lever arm 20 is pulled as the rack main body moves backward. Then, the disk D is chucked by the attracting arm 21 and the disk support arm 17.

  Further, when the rack main body is moved backward, the disk support arm 17 and the attracting arm 21 swing backward to carry the disk D, and the center hole Da of the disk D coincides with the clamp head 7. Until this time, the disk D is chucked and held by the holder 18 and the attracting arm 21, and the disk support arm 17 and the attracting arm 21 swing in synchronization.

  Thereafter, the driven pin 22 fixed to the frame member 8 is guided by a cam groove formed in the rack main body and a slide member (not shown) that moves forward and backward in synchronization with the rack main body, whereby the frame member 8. The lifting / lowering mechanism operates. That is, when the rack main body further retreats, the driven pin 22 is guided and raised by the inclined portion of the cam groove, and accordingly, the frame member 8 and the clamp head 7 start to rise.

  Then, the chuck claw 7 a of the clamp head 7 comes into contact with the open end of the center hole Da of the disk D. When the clamp head 7 is further lifted, the chuck claw 7a pushes up the disk D and presses the opening end of the center hole Da against the projection 2b of the opening 2a of the chassis case 2. Then, the clamp head 7 is fitted into the center hole Da of the disk D, and the chuck claw 7a is locked at the opening end of the disk D. That is, the disk D is fixed on the turntable 10 and clamped.

  After the clamp head 7 clamps the center hole Da of the disk D, when the rack main body slightly moves backward, the disk support arm 17 also swings slightly, and the chucking of the disk D by the holder 18 is released. At this time, the attracting arm 21 is also slightly swung in synchronism, and the chucking of the disk D is released. Further, in the raising / lowering mechanism of the frame member 8, the driven pin 22 slightly falls in the cam groove, and the disk D can be driven to rotate. That is, the clamping operation ends.

  The above is the operation mode of the disk apparatus 1 when the disk D having a diameter of 12 cm is carried in. When the disk D is carried out, the mechanism elements of each part perform the reverse operation following the reverse path. That is, the transport mechanism is driven in the reverse direction, the rack main body is advanced, and the disk support arm 17 swings forward. Then, in FIG. 2, it swings to the position of the disk support arm 17 indicated by the solid line, and about half of the disk D is ejected from the slot 3a to complete the carry-out.

  Next, in the disk device 1 as described above, as shown in FIG. 4, an operation when a small-diameter disk Ds having a diameter of 8 cm smaller than the disk D having a diameter of 12 cm is inserted from the slot 3 a toward the right end of the disk device 1. Will be described.

  When the operator inserts the 8 cm disc Ds from the slot 3a so as to be positioned near the right end (near the attracting arm 21) of the disc device 1, the entire 8 cm disc Ds completely enters the inside of the device as shown in FIG. Before the end, the front peripheral edge of the disk Ds comes into contact with the contact portion 19 a of the stopper 19 attached to the tip of the disk support arm 17. Therefore, the insertion of the 8 cm disc Ds is stopped and entry into the apparatus is prevented.

  In the state of FIG. 5, when the operator further pushes the disk Ds into the apparatus, the contact portion 19a of the stopper 19 is pressed by the front peripheral edge of the disk Ds. However, in this embodiment, a leaf spring, which is an elastic body, is used as the stopper 19, and the contact portion 19 a is fixed to the disk support arm 17 via the elastic portion 19 b of the leaf spring. Thereby, even if the contact portion 19a of the stopper 19 that is in contact with the front edge of the disk Ds is pressed and pushed, the contact portion 19a is pushed back by the elastic force of the elastic portion 19b generated by the pressing. Along with this, the disk Ds is pushed back to the operator side. That is, the disk Ds is pushed back so as to jump out from the slot 3a to the operator side for a moment. Therefore, the disk Ds is pushed back in the carry-out direction, whereby the operator can be made aware that the disk device 1 does not support the drive of the 8 cm disk Ds, and insertion of the 8 cm disk Ds can be prevented.

  Further, as shown in FIG. 5, the position of the disk support arm 17 when the 8 cm disk Ds is inserted and the front peripheral edge of the disk Ds comes into contact with the contact portion 19a of the stopper 19 is a disk having a specified outer diameter, specifically Is a position waiting for loading of a 12 cm disc. That is, it is a position where the disk support arm 17 swings forward. At this position, if a large force is applied to the disk support arm 17 to press the disk support arm 17 in a clockwise direction, the disk support arm 17 may be damaged. However, according to the present embodiment, even if the disk Ds is further pushed in from the position shown in the figure, the elastic force 19b of the stopper 19 that is in contact with the front peripheral edge of the disk Ds is deformed to absorb the pressing force. . Therefore, the above-described large force is not applied to the disk support arm 17, and the disk support arm 17 can be prevented from being damaged.

  In this way, even if the operator inserts the 8 cm disc Ds in error from the slot 3a, before the entire 8 cm disc Ds completely enters the inside of the apparatus, the erroneous insertion by the operator is prevented. Since the configuration is such that the 8 cm disc Ds is pushed back to the operator side, it is possible to prevent the trouble that the operator cannot take out the 8 cm disc Ds from the inside of the device and the failure of the disc device 1.

  In FIG. 6, the operator inserts the 8 cm disk Ds into the disk device 1 without the stopper 19 for preventing the 8 cm disk Ds from entering from the slot 3 a so as to be positioned near the right end of the disk device 1. The state of the case is shown. In the figure, the disk support arm 17 of the disk device 1 needs to be disposed so as not to pass over the clamp head 7, and therefore is disposed so as to swing on the left side of the clamp head 7. Further, the attracting arm 21 is arranged so as to wait at the right end of the apparatus for loading of the 12 cm disc D. Due to the configuration of these disk devices 1, a space that allows the 8 cm disk Ds to enter the inside of the device exists between the disk support arm 17 and the attracting arm 21. In this embodiment, the stopper 19 is attached to the disk support arm 17 to block the 8 cm disk Ds entry path so that this space does not become the 8 cm disk Ds entry path. However, when the stopper 19 is not attached to the disk device 1, this space becomes an entry path, and the entire 8 cm disk Ds enters the inside of the disk device 1, and the disk Ds cannot be taken out by the operator. It will be understood from the figure.

  As described above, due to the configuration of the disk device 1, there is a space on the right end side of the device that can serve as an entry path for the 8 cm disk Ds into the device. For this reason, in the disk device 1 of the present embodiment, when the 8 cm disk Ds is inserted so as to be positioned closer to the right end of the disk device 1, the disk support arm is arranged so that this space does not become the entry path of the 8 cm disk Ds. A stopper 19 is attached to the tip of 17. The front peripheral edge of the 8 cm disc Ds is brought into contact with the contact portion 19 a of the stopper 19, thereby preventing the 8 cm disc Ds from being inserted and preventing the 8 cm disc Ds from entering the inside of the apparatus.

  In the disk device 1 of the present embodiment, when the operator inserts the 8 cm disk Ds from the slot 3a so as to be positioned at a position other than the right end of the disk apparatus 1, the front end of the 8 cm disk Ds is the 12 cm disk D. Is brought into contact with and supported by the holder 18 at the tip of the disk support arm 17 that is waiting in the forefront. However, even if the disk Ds is further pushed into the apparatus, the disk support arm 17 cannot be swung until the angular position detection switch of the disk support arm 17 detects the drive start position. That is, since the 8 cm disc Ds has a small diameter, even if the front end of the disc Ds is in contact with and supported by the holder 18 at the tip of the disc support arm 17, the transport mechanism is not driven and the disc support arm 17 is at the foremost standby position. Return. Therefore, the 8 cm disc Ds is pushed back to the operator side by the disc support arm 17, and the 8 cm disc Ds is reliably prevented from entering the apparatus.

  FIG. 7 shows a state in which a disk D having a diameter of 12 cm, which is a specified outer diameter disk, is inserted into the disk device 1 of the present embodiment, and the disk D can be rotated after the clamping operation is completed. In the same figure, after the clamp head 7 clamps the center hole Da of the disk D, when the chucking of the disk D by the holder 18 of the disk support arm 17 is released, it is attached to the tip of the disk support arm 17. The contact portion 19a of the stopper 19 comes into sliding contact with the fixed portion 23 on the inner wall inside the apparatus. That is, in order to release the chucking of the disk D by the holder 18 of the disk support arm 17, when the disk support arm 17 is slightly swung backward, the contact portion 19a of the stopper 19 is slidably contacted with the fixed portion 23, and the disk The position of the support arm 17 is fixed. Therefore, the disk support arm 17 is prevented from vibrating or rattling during the information recording and reproducing operations by rotating the disk D clamped to the clamp head 7 by the spindle motor 11. As a result, noise and damage to each mechanism portion due to vibration and rattling of the disk support arm 17 are prevented. Further, in the present embodiment, a leaf spring that is an elastic body is used as the stopper 19, and the disk support arm 17 is fixed to the fixing portion 23 via the elastic portion 19 b of the leaf spring. Vibration and rattling can be reliably prevented.

  While the embodiments of the present invention have been described above, the present invention is not limited to the embodiments shown in the drawings, and various modifications can be made based on the technical idea of the present invention.

  For example, in the embodiment of the present invention, a leaf spring is used as the stopper 19 and attached to the disc support arm 17. However, a contact portion that contacts the front peripheral edge of the 8 cm disc Ds is attached to the disc support arm 17 via an elastic portion. The configuration may be changed as appropriate.

1 is a perspective view showing an external appearance of a disk device according to an embodiment of the present invention. FIG. 2 is a plan view showing an internal structure when a 12 cm disc is inserted in the disc device of FIG. 1. It is a perspective view for demonstrating the structure of the holder and stopper of a disk support arm. FIG. 2 is a perspective view showing an appearance when an 8 cm disc is inserted in the disc device of FIG. 1. FIG. 2 is a plan view showing an internal structure when an 8 cm disc is inserted near the right end of the device in the disc device of FIG. 1. FIG. 2 is a plan view showing an internal structure when an 8 cm disc is inserted in a state where no stopper is attached in the disc apparatus of FIG. 1. FIG. 2 is a plan view showing the internal structure of the disk apparatus of FIG. 1 in a state where a 12 cm disk is inserted and the disk can be rotated. It is a figure for demonstrating the structure of the conventional disk apparatus. It is a figure for demonstrating the structure of the conventional disk apparatus.

Explanation of symbols

1 .... Disk device 2 .... Chassis case 3 .... Bezel 4 .... Push button 5 .... Indicator 6 .... Base Panel 7 ... Clamp head 8 Frame member 9 Buffer support structure 10 Turntable 11 Spindle motor 12 ... · Optical pickup 13 ··· Carrier block 14 · 15 · · · Guide shaft 16 · · · Thread motor 17 · · · Disc support arm 18 · · · Holder 19 · · · Stopper 20 …… Lever arm 21 …… Attraction arm 22 …… Following pin 23 ・ ・ ・ ・ ・ Fixing part 24 ・ ・ ・ ・ ・ Loading motor

Claims (4)

It is a disk device that carries in or out a disk with a specified outer diameter by driving a support arm,
Disc entry preventing means for preventing a disc having a diameter smaller than the specified outer diameter from being inserted from the disc insertion port outside the range that can be supported by the support arm when the support arm is waiting for the disc to be carried in. A disk device comprising: The disk entry blocking means is a stopper having a contact portion that contacts the front peripheral edge in the entry direction of a small-diameter disk,
2. The disk device according to claim 1, wherein the stopper is attached to the support arm.   The stopper attached to the support arm has elasticity, and when the front peripheral edge of the small-diameter disk presses the contact portion of the stopper, the small-diameter disk is pushed back in the carry-out direction by the elastic force generated by the pressing. 3. The disk device according to claim 2, wherein the disk device is configured as described above.   When the loading of the disc with the specified outer diameter is completed and the support of the disc by the support arm is released, the contact portion of the stopper attached to the support arm is brought into sliding contact with the inner wall of the apparatus, and the support 4. The disk device according to claim 2, wherein a vibration isolating function for the arm is generated.

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