JP2004152438A - Eject/lock mechanism of disk unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a disk unit highly reliable by improving the structural strength of the eject/lock mechanism of the disk unit which drives an optical disk. <P>SOLUTION: In the elect/lock mechanism which is provided in the disk unit for loading/unloading an optical disk by forwarding/reversing a disk tray 1 on which the optical disk is loaded to/from a chassis case 10, a locking lever 29 in which steel plate shape material 29b is inserted into the tip part of the main body made of synthetic resin to be united with the lever 29 is provided in the eject/lock mechanism B. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disk drive for driving an optical disk such as a CD (Compact Disc) or a DVD (Digital Versatile Disc), which is widely used as a recording medium, and an eject / lock mechanism provided on a disk tray for loading the optical disk. It relates to the improvement of.
[0002]
[Prior art]
Generally, a device such as a personal computer (hereinafter, referred to as a personal computer) has a built-in and integrated disk device for driving an optical disk, and records and reproduces information on and from the optical disk (for example, see Patent Document 1). FIG. 18 shows the appearance of a notebook personal computer incorporating such a disk device. Usually, the disk device in this case pops out the disk tray 101 in response to a switch operation or a command from the personal computer main body. The user pulls out the disk tray 101 and loads the optical disk D.
[0003]
FIG. 19 shows an external view of a disk drive which is particularly often used in a notebook personal computer. As shown in FIG. 19, a turntable fixed to a drive shaft of a spindle motor disposed immediately below the center of a disk tray 101 is provided. The turntable 102 is provided with a clamp mechanism 2a integrally formed on the turntable 102 to clamp a center hole of the optical disc D to transmit a rotational force. The head unit 103 mainly composed of an optical pickup moves in a radial direction in a slit 101a formed in the disc tray 101 to record and reproduce information on the optical disc D. The disk tray 101 configured as described above is configured to be supported by the guide rails 104 and fit in the chassis case 105.
[0004]
[Patent Document 1]
Japanese Patent Application No. 2002-97076 [0005]
[Problems to be solved by the invention]
By the way, recent notebook personal computers are desired to be as thin and light as possible, which is an important issue in product development. However, a disk device that is built into a notebook computer is sometimes provided with a drive system unit for an optical desk, making it the most difficult part to reduce the thickness.
[0006]
At present, the standard thickness of such a disk drive is about 12.7 mm, but the required thickness is about 9.5 mm. In addition, the clearance of the movable part becomes strict, so that it is extremely difficult to deal with the design. In addition, in a disk drive for driving an optical disk having an extremely high recording density as in recent years, the mechanical accuracy must be further improved while achieving a reduction in thickness, and no structural defect occurs. And maintain high durability.
[0007]
By the way, among the mechanical parts in such a disk device, an eject / lock mechanism can be cited as a part requiring the most structural durability. This eject / lock mechanism has a function of locking the disc tray so that the disc tray does not pop out when the disc tray is loaded. Usually, a lock lever of the eject / lock mechanism and a lock attached to the base chassis are provided. The above function is obtained only by the engagement of the pin.
[0008]
However, as described above, along with the reduction in thickness of the entire disk drive, the components of each mechanism have also been reduced in thickness, and the lock lever must also be made thinner. However, there is a problem in that the rigidity is reduced in the case where the molding is performed integrally. In particular, the lock lever is frequently operated with loading / unloading of the disk tray, and it is necessary that the durability does not decrease over time. In addition, for example, when a large impact due to a drop or the like is received and a force is exerted such that the disc tray pops out of the main body, the disc tray is locked only by the lock lever. It will be easily destroyed.
[0009]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made to prevent the rigidity of a lock lever from being reduced even when the lock lever is formed thin, thereby improving the structural strength of an eject / lock mechanism and improving reliability. Is set to be higher.
[0010]
[Means for Solving the Problems]
Therefore, the present invention provides an eject / lock mechanism provided in a disk device in which a disk tray loaded with a recording medium is moved forward / backward in a chassis case to load / unload the disk tray. The eject / lock mechanism is provided with a lock lever integrally formed by inserting a steel plate.
[0011]
Further, in the eject / lock mechanism having the above configuration, the lock lever includes a driven surface that is pressed during an emergency eject, and the driven surface is formed of a synthetic resin.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is preferably applied to a disk device that realizes a reduction in thickness, but can also be applied to an existing disk device, and the implementation target is not limited. In addition, in order to facilitate understanding of the disk device to which the present invention is applied, an explanation will be given below including an outline of the entire configuration.
[0013]
FIGS. 1 and 2 are perspective views showing the appearance of a disk device embodying the present invention. In FIG. 1 and FIG. 2, reference numeral 1 denotes a disk tray integrally formed of a synthetic resin. The optical disk is fixed to a drive shaft of a spindle motor 3 shown in FIG. 4 built in the disk tray 1 and clamped by a clamp mechanism 102a integrated with the turntable 2 to rotate. The head unit 4 mainly composed of an optical pickup moves in a radial direction in a slit 1a formed in the disc tray 1 to record and reproduce information on the optical disc. The disk tray 1 configured as described above is configured to be supported by the guide rail 5 and fit in the chassis case 10.
[0014]
A notch 1b is formed at an end of the disc tray 1 on the back side to avoid contact with the electronic components of the printed circuit board 7 disposed on the chassis case 10, and the notch 1b is If necessary, it is sealed with a sealing material 6. Such a configuration is an effective means when the disk tray is configured to be thin, and the thickness of the disk tray 1 can be reduced.
[0015]
Next, a side arm 1c for accommodating a slider mechanism C to be described later is integrally formed on one side of the front end of the disc tray 1, and a bezel is provided on the front end face of the disc tray 1 as shown in FIG. 8 is attached so that the tongue piece 8a is inserted into the insertion hole 1d of the disc tray 1. Reference numeral 8b denotes a through hole for inserting an operation pin for forcibly releasing (emergency eject) a lock state of the eject / lock mechanism in the disc tray 1 in an emergency, and reference numeral 8c denotes an indicator display window. 8d is an operation button for unloading the disc tray 1.
[0016]
An earth plate 9 is attached to the engaging projection 1j of the disc tray 1 by a claw piece 9a on the front end surface of the disc tray 1, and when the disc tray 1 is loaded, the open end 9b is attached to the chassis case 10. , So that a discharge path is formed. The function of the earth plate 9 is to prevent the influence of static electricity on the human body when the disc tray 1 is forcibly released as described above or when a fingertip comes into contact with the operation button for unloading. It is designed to prevent breakage of sinks and electric components, and is generally fixed to the bezel side in the related art.
[0017]
By the way, this bezel is used to decorate the front face of the disk device, and usually, a bezel designed for a personal computer is used. Under such circumstances, in many cases, the supplier delivers the completed disk unit alone without the bezel attached, and the PC manufacturer who accepted the disk unit manufactures the bezel independently, It is fixed to the front end of the tray. However, conventionally, since the ground plate is integrated with the bezel by heat caulking or the like, the processing cost hinders cost reduction.
[0018]
Therefore, in order to solve such a situation, the earth plate 9 is mounted on the front end surface of the disc tray 1 in advance, so that at the delivery destination, it is possible to cope with the production of only the bezel without integrating the earth plate. This makes it possible to keep processing costs low.
[0019]
Next, the chassis case 10 molded of a light metal such as aluminum or magnesium is composed of a base chassis 11 and a cover chassis 12 as shown in FIG. 2, and the opening of the base chassis 11 is covered with the cover chassis 12 and screwed. A holding rail 13 made of a synthetic resin is fixed to both ends of the base chassis 11, and a metal guide rail 5 is supported in the holding rail 13 so as to be movable forward and backward in a floating state. Further, the guide rail 5 supports the ridges 1d formed on both side ends of the disc tray 1 in a floating state so as to be able to move forward and backward. Therefore, when the disk tray 1 is completely accommodated in the chassis case 10, the chassis case 10 shields the disk tray 1 from magnetic and static electricity, and the open end 9b of the ground plate 9 is placed in the opening of the chassis case 10. In contact, a discharge path is formed. According to the configuration of the embodiment of the present application, the ground plate 9 is fixed to the front end surface of the disk tray 1, so that even when the bezel 8 is not mounted, the influence of static electricity on the electric components in the disk tray 1 is reduced. Can be prevented.
[0020]
FIG. 5 is an enlarged sectional view showing the above-mentioned configuration, that is, an assembly state of the holding rail 13 serving as a transfer mechanism of the disc tray 1, the guide rail 5, and the protruding ridge 1e of the disc tray 1. As shown in FIG. On the outer surface of the guide rail 5 of the present invention, fine unevenness 5a having a satin finish is formed. This is a process for reducing the sliding contact resistance between the holding rail 13 and the guide rail 5, and is intended to provide an operation feeling that the disc tray 1 can smoothly move forward and backward.
[0021]
Although such processing is not performed on the conventional disk drive, the clearance between the holding rail 13 and the guide rail 5 becomes extremely small as the disk drive becomes thinner and the information density increases. . This is important in order to prevent vibration and the like from affecting the recording and reproduction of information, and the design is such that the clearance is required to be a minimum. If the holding rail 13 and the guide rail 5 are configured under such conditions, the contact ratio of the sliding contact wall surface becomes high, and the operation of the disk tray 1 becomes uncomfortable and cannot be performed smoothly. Therefore, as described above, by forming the fine unevenness 5a on the guide rail 5, the sliding contact resistance is reduced and the smooth operation feeling of the disc tray 1 can be maintained.
[0022]
The fine irregularities may be formed on both the inner and outer surfaces of the guide rail 5 or on the holding rail 13 and the ridge 1d of the disc tray 1. In short, the fine irregularities are in contact with the sliding contact surface on which the fine irregularities are formed. What is necessary is just to make a sliding contact surface a smooth surface. In FIG. 5, reference numeral 14 denotes a short-circuit member, which is used to electrically connect the guide rail 5 and the base chassis 11 because the holding rail 13 is an insulator. In the embodiment shown in the figure, a metal steel ball is loaded into the window hole 13a of the holding rail, but a leaf spring, a coil spring, a conductive fiber, or the like may be used instead of a rope ball. .
[0023]
Next, an outline of the internal configuration of the disk tray 1 in the disk device of the present invention will be described with reference to FIG. The figure shows a state in which a bottom cover 15 has been removed. A spindle motor 3 for rotating and driving the optical disk, a head unit 4, a thread motor 16 and a gear for reciprocating the head unit 4 in the radial direction of the optical disk are shown in the center. A drive mechanism A mainly including the unit 17 is provided. An eject / lock mechanism B is provided at a corner of the front end of the disc tray 1, and a slider mechanism C is provided within the side arm 1c.
[0024]
Both ends of the head unit 4 are freely provided on a guide shaft 18. The teeth 19 a of the teeth member 19 fixed to the head unit 4 are guided by the guide grooves 20 a of the screw shaft 20 to move and reciprocate. Like that. FIG. 6 is an enlarged view of a main part of the configuration, in which the main members of the teeth member 19 and the support member 21 are simultaneously fixed to the head unit 4 loosely provided on the guide shaft 18 by the screws 22.
[0025]
As shown in FIG. 7, the tooth member 19 has a tooth 19b meshing with a guide groove 20a of a screw shaft 20 in a hanging piece 19a at an end of a main body, and a window hole 19c formed in the center. Further, a window hole 19d is formed on the left and right of the window hole 19c, and a pillar 19e is integrally formed in a state in which a pillar 19e hangs in a depth portion of the window hole 19d. On the other hand, the support member 21 has a support piece 21b at the end of the main body for preventing the hanging piece 19a of the tooth member 19 from rising, and a pressing piece 21a for supporting the hanging piece 19a while urging it from the back. Is formed.
[0026]
Therefore, when the teeth member 19 and the support member 21 are integrally fixed to the head unit 4, the hanging piece 19 a of the teeth member 19 is pressed by the pressing piece 21 a while being held down by the support piece 21 b of the support member 21 as shown in FIG. It is urged forward. This ensures that the teeth 19b of the hanging piece 19a mesh with the guide groove 20a of the screw shaft 20, and the hanging of the hanging piece 19a can be prevented. On the other hand, when a force for pushing down the hanging piece 19a is exerted by the screw shaft 20 and the hanging piece 19a is displaced as shown by the imaginary line in the figure, the pillar 19e is also pushed down by this hanging piece 19a and abuts on the guide shaft 18, At this position, the displacement of the hanging piece 19a is restricted.
[0027]
By fixing the teeth member 19 to the support member 21 in this manner, the teeth 19b of the hanging piece 19a can be completely prevented from dropping out of the guide groove 20a of the screw shaft 20, and the optical disk of the head unit 4 can be prevented. It is possible to cope with a high-speed access to the server. That is, as the recording density of the optical disk increases, the frequency of the reciprocating movement of the head unit 4 increases, and since the speed has been increased, the rotation speed of the screw shaft 20 also increases.
[0028]
In such a situation, a sudden driving force is applied to the teeth 19b of the hanging piece 19a from the guide groove 20a of the screw shaft 20, and at that moment, a component force directed upward or downward is generated, and the hanging piece 19a is When the tooth 19b and the guide groove 20a mesh with each other, the meshing state of the tooth 19b and the guide groove 20a becomes shallow, and the risk of falling off increases. Such a phenomenon is particularly prominent at the end of the guide groove 20a of the screw shaft 20, and there is a high probability that the teeth 19b fall out of the guide groove 20a. Could be prevented.
[0029]
Next, the configuration of the gear unit 17 for driving the screw shaft 20 to rotate will be described. Heretofore, the configuration of the gear unit in such a portion has been manually performed by inserting a gear shaft of each gear into a bearing hole formed in a gear frame. However, such a work usually has a high probability of damaging a tooth row formed of a synthetic resin, and there is a problem that a so-called seek noise increases when a damaged gear is present in a gear unit.
[0030]
Therefore, the disk device of the present invention has adopted a configuration as shown in FIG. In the configuration shown in the figure, the gear unit 17 is composed of a combination of three single gears G1, G2, G3, and the gear G1 is fixed to the output shaft of the thread motor 16. On the other hand, a gear G2 is fixed to the screw shaft 20 to which the rotational force of the thread motor 16 is transmitted, and the shaft is inserted into a bearing hole formed in the gear frame. In this state, the gear G3 can be easily loaded by dropping the gear shaft of the gear G3 into the bearing groove 24 formed in the gear frame 23.
[0031]
That is, conventionally, when the gear G3 was loaded, the gear shaft was inserted into the bearing hole, so that it was not possible to maintain the horizontality of the gear at the time of loading and the tooth row was damaged. In this case, the gear G3 can be loaded while maintaining the horizontality, and the gears G1 and G2 rotate following the loading of the gear G3, so that an excessive load is not applied to each tooth row. The risk of damage when assembling the unit 17 can be avoided.
[0032]
In the case of the configuration of the gear unit 17, since the gear shaft of the gear G3 is loosely fitted in the bearing groove 24, the cover plate 25 is attached to prevent the gear G3 from dropping. The cover plate 25 has a screw hole 25a formed at one end as shown in an inverted state in FIG. 9, and a locking claw 25b formed at two places at the other end. When one end of the cover plate 25 is fixed to the gear frame 23 with the screw 26, one of the locking claws 25b on the other end is engaged with the window hole 23a formed in the gear frame 23, and the other locking claw 25b is engaged. It engages with the stop portion 23b. When the engaging claws 25b engage with the window holes 23a and the engaging step portions 23b, the inclined surfaces formed at the corners of the undercut portions of the engaging claws 25b are engaged with the engagement positions of the gear frame 23. 9 as shown in the blowout diagram of FIG. As a result, the cover plate 25 can be securely fixed without floating, so that even if the vibration from the thread motor 16 and the gear unit 17 propagates, the cover plate 25 is excited to generate noise. There is no.
[0033]
Next, the configuration and operation of the eject / lock mechanism B employed in the disk device of the present invention will be described. The eject / lock mechanism B is for fixing the state in which the disk tray 1 is loaded in the chassis case 10 or releasing this fixed state so that the disk tray 1 can be unloaded. As shown in FIG. 10, a self-holding solenoid 27, a release lever 28, a lock lever 29, and a return lever 30 are combined.
[0034]
In the self-holding solenoid 27, the tips of the pair of yokes 27a and 27b are inserted and fixed from the rear ends of the exciting coils 27c and 27d to almost the middle. A permanent magnet 27e is attached to the ends of the yokes 27a and 27b, thereby forming a horseshoe-shaped magnetic circuit. On the other hand, a movable piece 27f, which is a magnetic material, is inserted into the leading ends of the exciting coils 27c and 27d so as to be able to move forward and backward.
[0035]
For this reason, in the steady state, the movable piece 27f is held in a state of being attracted by the magnetic force of the magnetic circuit formed by the permanent magnet 27e. Then, by applying a direct current so as to generate a magnetic field opposite to the magnetic field generated by the permanent magnet from the terminals of the excitation coils 27c and 27d, the magnetic field generated by the permanent magnet 27e is canceled out, The constraint of the movable piece 27f is released. Since the movable piece 27f is connected to the pin 28a fixed to the release lever 28, the release lever 28 also reciprocates in the horizontal direction in synchronization with the forward and backward movement of the movable piece 27f. The self-holding solenoid 27 is fixed to the disk tray 1 by screws.
[0036]
Next, the release coil 28 is always latched by a tension coil spring 31 so as to be urged leftward in the figure, and the spring force is the magnetic force of the permanent magnet 27 e of the self-holding solenoid 27. The condition is that it is weaker than the binding force.
[0037]
Reference numeral 29 denotes a lock lever which is constantly urged in the counterclockwise direction by a slight spring force in the figure, and is engaged with a lock pin 32 fixed in the chassis case 10 so that the disk tray 1 It has a function to maintain the load state. Lock levers that perform such a function are generally often integrally formed of synthetic resin. However, as the overall disk drive becomes thinner, this lock lever must also be made thinner.However, the lock lever formed by integral molding of a synthetic resin has a problem of reduced rigidity, and the operation frequency is high. It must be durable.
[0038]
Therefore, in the present invention, as shown in FIG. 11, the resin main body 29a is formed by insert molding that includes the steel plate shape member 29b. As is clear from the figure, the steel plate-shaped member 29b is inserted at the tip end, and the portion requiring the most rigidity is reinforced. Then, the end portion of the steel plate member 29b is exposed from the synthetic resin portion so that the sliding contact resistance with the lock pin 32 is reduced. On the other hand, at the rear end of the lock lever 29, an activation end 29c and an inclined surface (driven surface) 29d for forced release are formed.
[0039]
By the way, in the state where the disc tray 1 is loaded as shown in FIG. 12 and the lock pin 32 is engaged with the angle portion 29 e of the lock lever 29, for example, due to a system abnormality or the like, this forced release means that This is to deal with the occurrence of a failure that makes it impossible to unload the. When such a failure occurs, an appropriate operation pin P is inserted from the through hole 8b of the bezel 8 as shown in the figure, and the tip is pushed while sliding along the inclined surface 29d of the lock lever 29. By rotating the lock lever 29 clockwise in the figure, the engagement with the lock pin 32 is released, and the disk tray 1 can be pulled out.
[0040]
Since the inclined surface 29d of the lock lever 29 is a portion formed of a synthetic resin, the inclined surface 29d may be arbitrarily formed such as an inclined curved surface or an inclined surface having a stepwise angle θ1 or θ2 as shown in FIG. Thus, it is possible to arbitrarily form an inclined surface in a state where the operation feeling by the operation pin P is the best. Further, as shown in FIG. 12, the notch 15a is formed in the bottom cover 15 at a position corresponding to the inclined surface 29d of the lock lever 29, so that the operation pin P can sink, and the thickness of the bottom cover 15 is equivalent to the thickness of the bottom cover 15. Since the notch 15a serves as a guide groove for the operating pin P, the tip of the operating pin P at the time of forcible release can be suppressed, and the operability can be improved.
[0041]
Next, the return lever 30 is configured such that its activation end 30a is pressed by the return pin 32 and is activated. The release lever 28 is operated by the operation end 30b to return the self-holding solenoid 27 to a steady state. It was made. The return lever 30 can be returned to the original position (see FIG. 10B) by the tension coil spring 34.
[0042]
Incidentally, the return pin 32 is formed of a metal material in a columnar shape, and its end is fixed to the base chassis by caulking. However, since the material is metal and the cross-sectional shape is cylindrical, the sliding contact resistance with the return lever 30 is large, and when the disc tray 1 is loaded with a fingertip, a so-called click shock occurs, and the operational feeling is reduced. Was to decline.
[0043]
Therefore, in the present invention, the return pin 32 is formed of a synthetic resin having a reduced sliding contact resistance, and is integrally formed while extending from the holding rail 13 as shown in FIG. This makes it possible to form the return pin 32 in an arbitrary cross-sectional shape. For example, as shown in the embodiment, it is possible to form a taper 32a on the contact surface to reduce sliding contact resistance and reduce click shock. did it. Further, since the directionality of the tapered surface 32a can be kept constant by integral molding with the holding rail 13 made of synthetic resin, the quality of the product does not become unstable. Since the return pin 32 is formed integrally with the holding rail 13, the return pin 32 is not separately manufactured, and the work of fixing the return pin 32 to the base chassis 11 is unnecessary. Can be reduced. In the figure, reference numeral 33 denotes a lock pin, which is fixed to the base chassis 11 by caulking. The length of the return pin 32 is shorter than that of the return pin 32 so as not to come into contact with the activation end 30a of the return lever 30.
[0044]
In FIG. 13, reference numeral 35 denotes a pop-out mechanism of the disc tray 1, and a tension coil spring 37 is stretched on a slide member 36. As a result, when the disc tray 1 advances leftward in the figure, the rear end of the disc tray 1 comes into contact with the end 36a of the slide member 36, and the disc tray 1 further advances and is locked at a fixed position. Then, the tension coil spring 37 is extended and the spring force is stored. Therefore, when the disc tray 1 is ejected and the lock is released, the spring force accumulated in the extension coil spring 37 is instantaneously released, so that the disc tray 1 is pushed out and pops out.
[0045]
Next, the operation mode of the eject / lock mechanism B having the above configuration is as follows. First, the loaded disc tray 1 advances, and the return pin 32 contacts the activation end 30a of the return lever 30 as shown in FIG. When the return lever 30 rotates in the counterclockwise direction, the operating end 30b abuts on the distal end of the release lever 28, and moves the release lever 28 to the right in parallel. Accordingly, the extension coil spring 31 is extended, and the movable piece 27f of the self-holding solenoid 27 is pushed into the exciting coils 27c and 27d, and is attracted and held by the magnetic force of the permanent magnet 27e.
[0046]
When the disc tray 1 further advances, the lock pin 33 enters while pressing the top slope of the lock lever 29, and the lock pin 33 engages with the angle portion 29e of the lock lever 29 as shown in FIG. Then, the locking of the disc tray 1 is completed.
[0047]
On the other hand, when the lock state is released in order to unload the disk tray 1, that is, when the ejection is performed, a DC current is applied to the excitation coils 27c and 27d of the self-holding solenoid 27 in the state of FIG. Then, the magnetic field generated by this causes the magnetic field formed by the permanent magnet 27e to be cancelled, and the restraint of the movable piece 27f is released, so that the spring force accumulated in the tension coil spring 31 is released, and the release lever 28 is released. The lock lever 29 moves in the left direction, and the lower end of the release lever 28 contacts the activation end 29c of the lock lever 29 to rotate the lock lever 29 clockwise. Therefore, at this time, the engagement between the lock pin 33 and the angle portion 29e of the lock lever 29 is released, and the disc tray 1 pops out by the action of the tension coil spring 37 of the pop-out mechanism 35 described above.
[0048]
Next, a configuration for improving the stationary stability of the disk tray 1 when the disk tray 1 is loaded and locked in the chassis case 10 will be described. As described above, the disc tray 1 advances and retreats in the chassis case 10, but in order to allow this, the support mechanism needs a slight clearance. However, the clearance also allows the disk tray 1 to vibrate, and causes a reading error and a writing error when an impact is applied.
[0049]
Further, as the disk device becomes thinner, the distance between the clamp mechanism 2a and the inner wall surface of the cover chassis 12 becomes shorter, and the risk of contact with each other increases. If the clamp mechanism 2a comes into contact with the inner wall surface of the cover chassis 12 during operation of the disk device due to some external factor in such a state, the rotational speed of the optical disk rapidly decreases, and a failure such as a reading error or a writing error occurs. Therefore, this is an important problem that must be solved particularly in making the disk device thinner and higher in recording density.
[0050]
Therefore, in the present invention, when the disc tray 1 is locked, a static pressure is always generated in the disc tray 1, and such a configuration will be described below. 1 to 3, rollers 38 and 39 are provided inside key portions of the disc tray 1, and a part of the rolling surface thereof is exposed on the surface of the disc tray 1. In this configuration, as shown in FIG. 14, a bearing block 1g is formed on both sides of the window hole 1f, and an angle 1h and a positioning boss 1i for hooking the support plate 40 are formed before and after. Therefore, when the roller shafts of the rollers 38 and 39 are arranged on the bearing block 1g and the support plate 40 is hung on the angle 1h, the rollers 38 and 39 are rotatably mounted on the back surface of the disc tray 1 as shown in FIG. State.
[0051]
FIG. 16 is an enlarged view showing the state of the rollers 38 and 39 thus arranged in the chassis case 10, and the rolling surfaces of the rollers 38 and 39 exposed on the surface of the disc tray 1 are covered. It contacts the inner wall surface of the chassis 12. At this time, the support plate 40 supporting the roller shaft functions as a leaf spring, and presses the rollers 38 and 39 against the cover chassis 12. Therefore, at the stop position of the rollers 38 and 39, the cover chassis 12 functions as a reaction point, and a static pressure is generated on the disc tray 1.
[0052]
The configuration employing the above rollers 38 and 39 enables the configuration to be implemented on a portion of one side of the disk tray 1 which has a relatively large margin in structure, but in a disk device having a standard outer shape. The corresponding side cannot be configured with the rollers described above. However, in order to further secure the stationary stability of the disk tray 1, it is desirable to generate a stationary pressure on both sides of the disk tray 1. Therefore, in the present invention, the slider mechanism built in the side arm is improved. And to solve such a problem.
[0053]
In FIG. 12, a slider mechanism C built in the side arm 1c has one end pivotally supported and is urged clockwise in FIG. 12 by a torsion coil spring 42 so that the tip 41a swings. 41. On the side surface of the tip end portion 41a of the slider 41, there is formed a downwardly inclined surface 41b that goes downward from above. On the other hand, the side wall 11a of the base chassis 11 and the side wall 12a of the cover chassis 12 with which the leading end 41a of the slider 41 slides are formed at an angle that matches the inclination angle of the inclined surface 41b of the leading end 41a.
[0054]
With this configuration, when the disk tray 1 is placed in the chassis case 10, the front end 41 a of the slider 41 slides on the side wall 11 a of the base chassis 11 on the inclined surfaces as shown in FIG. 17. In such a state, the slider 41 is biased outward (P1) by the torsion coil spring 42, so that the disk tray 1 can maintain its original function in the horizontal stable state, and the inclined surface can be maintained. As a result, a downward component force (P2) is generated due to the sliding contact, and this force becomes a static pressure, whereby a stable state of the disk tray 1 in the plane direction is maintained.
[0055]
【The invention's effect】
As described in detail above, according to the eject / lock mechanism of the present invention, since the steel plate is inserted into the tip of the lock lever and integrated, the rigidity does not decrease over time. Sufficient durability can be provided even when stress is concentrated due to impact or the like, so that a highly reliable disk device can be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view of a disk device with a disk tray unloaded.
FIG. 2 is a perspective view of the disk device with a cover chassis removed.
FIG. 3 is a perspective view showing a configuration of a disc tray.
FIG. 4 is a plan view showing the internal configuration of the disc tray.
FIG. 5 is a sectional view of a support structure of the disc tray.
FIG. 6 is a perspective view of a tooth portion of a transfer mechanism of the head unit.
FIG. 7 is a perspective view of a tooth member and a support member of the head unit.
FIG. 8 is a sectional view of an assembled state of a tooth portion of the head unit.
FIG. 9 is a perspective view illustrating an assembled state of a gear unit in the drive mechanism.
FIG. 10 is an explanatory diagram of a configuration and an operation mode of an eject / lock mechanism.
FIG. 11 is a perspective view of a lock lever of the eject / lock mechanism.
FIG. 12 is an explanatory diagram of an eject / lock mechanism and a side arm portion.
FIG. 13 is a perspective view for explaining a configuration of a lock pin.
FIG. 14 is an exploded perspective view of a roller structure for generating a static pressure.
FIG. 15 is an assembled perspective view of a roller structure for generating a static pressure.
FIG. 16 is a cross-sectional view showing a state where the roller structure is functioning.
FIG. 17 is a cross-sectional view for explaining the structure and function of a side arm.
FIG. 18 is a perspective view showing the appearance of a general notebook computer.
FIG. 19 is a perspective view showing the appearance of a conventional disk device.
[Explanation of symbols]
A: Drive mechanism B: Eject / lock mechanism C: Slider mechanism 1: Disk tray 1a: Slit 1b: Notch 1c Side arm 1d Insertion hole 1e Convex ridge 1f Window hole 1g Bearing block 1h Angle 1i ···· Positioning boss 1j ···· Locking projection 2 ······· Turntable 3 ····· Spindle motor 4 ······ Head unit 5 ···· ··· Guide rail 5a ···························································································································· ..Earth plate 10 Chassis case 11 Base chassis 12 Cover chassis 3 Hold rail 14 Short-circuit member 15 Bottom cover 16 Thread motor 17 Gear unit 18 Guide shift 19 ... Teeth member 19b Teeth 20 Screw shaft 20a Guide groove 21 Support member 23 Gear frame 24 Bearing Grooves 25 Cover plate 27 Self-holding solenoid 28 Release lever 29 Lock lever 29a Resin-based 29b Steel plate 29d ... Inclined surface 29e Angle part 30 Return lever 32 Return pin 33 Lock pin 35 Pop-out mechanism 38 .... Roller 39 ... Roller 40 ... Holding plates 41 ----- slider 41b · · · · inclined surface 42 ..... torsion coil spring

Claims (2)

In an eject / lock mechanism provided in a disk device for loading / unloading by moving a disk tray loaded with a recording medium forward and backward in a chassis case,
An eject / lock mechanism for a disk drive, comprising: a lock lever in which a steel plate is inserted into a leading end of a main body made of a synthetic resin and integrated. The eject / lock mechanism according to claim 1, wherein
The eject / lock mechanism, wherein the lock lever has a driven surface that is pressed during an emergency eject, and the driven surface is formed of a synthetic resin.

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