Cartridge loading apparatus and methods of manufacturing and operating same

• US 6,411,584 B2
• Filed: 02/19/1999
• Issued: 06/25/2002
• Est. Priority Date: 08/25/1994
• Status: Expired due to Fees

• Current Assignee: Discovision Associates (Pioneer Corporation)
• Original Assignee: Discovision Associates (Pioneer Corporation)
• Inventors: Davis, Marvin B., Murphy, Kent T.
• Primary Examiner(s): KLIMOWICZ, WILLIAM JOSEPH
• Application Number:
  US09/256,336
• Publication Number:
  US 20010043544A1
• Time in Patent Office: 1,222 Days
• Field of Search: 369/75.1, 369/75.2, 369/77.1, 369/77.2, 369/244, 369/256, 360/99.02, 360/99.03, 360/99.06, 360/99.07, 360/105
• US Class Current: 720/713
• CPC Class Codes: G11B 11/10543 using optical beam of radiation
• CPC Class Codes: G11B 11/10558 in view of the loading or unloading of the carrier
• CPC Class Codes: G11B 17/0288 by means for moving the turntable or the clamper towards the disk
• CPC Class Codes: G11B 17/0405 Closing mechanism, e.g. door
• CPC Class Codes: G11B 17/0434 with mechanism for subsequent vertical movement of the disc G11B17/0438 takes precedence
• CPC Class Codes: G11B 17/0436 with opening mechanism of the cartridge shutter G11B17/0438 takes precedence
• CPC Class Codes: G11B 17/0438 with mechanism for subsequent vertical movement of the disc and opening mechanism of the cartridge shutter
• CPC Class Codes: G11B 7/08582 Sled-type positioners

Abstract

A cartridge unloading apparatus for a disk drive having a cartridge loading end, a remote end, and a base plate. The apparatus is employed for tiltably unloading the disk from a spindle magnet with a peeling action. The apparatus includes first and second sliders positioned relative the ends of the disk drive. The sliders each have only one S-shaped slot formed therein. Each slider has a slot to receive one of the two lifting pins provided on a cartridge receiver. The movement of the sliders drives the lifting pins along the slots, thereby raising or lowering the cartridge receiver depending upon the direction of rotation of the tiller. The sliding motion of the lifting pins engaged in the S-shaped slots thus unloads a disk from or, alternatively, loads the disk onto the drive spindle. As the lifting pins travel along their respective slots, the lifting and lowering of the disk is accomplished in such a manner that the disk hub is peeled from the spindle magnet rather than being lifted vertically off the spindle. This reduces the peak force required to break the magnetic clamp force between the spindle magnet and the disk hub. The apparatus may include a bias coil assembly rotatably mounted on an arm so that the bias coil assembly may be loaded into or extracted from the disk cartridge and placed out of the travel path of the disk cartridge. Methods for manufacturing and operating the apparatus in conjunction with a disk drive are also provided.

Claims

1. A cartridge unloading apparatus for a disk drive having a cartridge loading end, a remote end, and a base plate, the apparatus for tiltably unloading a disk from a spindle magnet with a peeling action, the apparatus comprising in combination:

a first slider having a forward end adjacent the cartridge loading end of the disk drive and a remote end adjacent the remote end of the disk drive, said first slider further having only one S-shaped slot formed therein;

a second slider having a forward end adjacent the cartridge loading end of the disk drive and a remote end adjacent the remote end of the disk drive, said second slider further having only one S-shaped slot formed therein;

a tiller having a first end and a second end, said first end of said tiller being swingably linked with said forward end of said first slider, and said second end of said tiller being swingably linked with said forward end of said second slider, so that a first rotation of said tiller in a first direction about a tiller axis drives said first slider toward the cartridge loading end of the disk drive while driving said second slider toward the remote end of the disk drive, and a second rotation of said tiller in a second direction about said tiller axis drives said first slider toward the remote end of the disk drive while driving said second slider toward the cartridge loading end of the disk drive;

a cartridge receiver for receiving a respective cartridge containing a disk with a central hub, said cartridge receiver being moveable between an upper position and a lower position when said sliders are driven by said tiller; and

a first lifting pin and a second lifting pin associated with said cartridge receiver, said first lifting pin slidably fitting into one of said S-shaped slots, and said second lifting pin slidably fitting into the other S-shaped slot, said lifting pins being non-coplanar with a plane that is parallel to the ends of the disk drive and perpendicular to a base plate, and that passes through substantially the center of the spindle magnet.

2. The apparatus according to claim 1 further including a stop cooperative with said sliders, said stop for preventing said sliders from further movement when the disk is fully loaded.

3. The apparatus according to either claim 1 or 2 further including a first slider channel in which said first slider is slidably mounted and a second slider channel in which said second slider is slidably mounted.

4. The apparatus according to either claim 1 or 2 wherein said base plate includes one pair of substantially vertical slots in which said lifting pins are accommodated in a raising and lowering motion of the receiver.

5. The apparatus according to claim 3 wherein said base plate includes one pair of substantially vertical slots in which said lifting pins are accommodated in a raising and lowering motion of the receiver.

6. The apparatus according to either claim 1 or 2 wherein a label end of the cartridge remains visible when the cartridge is loaded in the drive.

7. The apparatus according to claim 3 wherein a label end of the cartridge remains visible when the cartridge is loaded in the drive.

8. The apparatus according to claim 4 wherein a label end of the cartridge remains visible when the cartridge is loaded in the drive.

9. A disk drive system having a spindle magnet, a spindle motor, and including the apparatus recited in claim 1 wherein rotation of said tiller in the first direction tiltably unloads the disk from the spindle magnet, and rotation of said tiller in the second direction tiltably loads the disk onto the spindle magnet with a raising and lowering motion.

10. The disk drive system according to claim 9 further including a stop cooperative with said sliders, said stop for preventing said sliders from further movement when the disk is fully loaded.

11. The disk drive system according to claim 10 further including a first slider channel in which said first slider is slidably mounted and a second slider channel in which said second slider is slidably mounted.

12. The disk drive system according to claim 9 wherein said base plate includes one pair of substantially vertical slots in which said lifting pins are accommodated in a raising and lowering motion of the receiver.

13. The disk drive system according to claim 10 wherein said base plate includes one pair of substantially vertical slots in which said lifting pins are accommodated in a raising and lowering motion of the receiver.

14. A method of manufacturing a cartridge loading and unloading mechanism, said method comprising the steps of:

forming a first slider having only one S-shaped slot;

forming a second slider having only one S-shaped slot;

placing said first slider in a housing so that a first end of said first slider is adjacent a first end of said housing and a second end of said first slider is adjacent a second end of said housing;

placing said second slider in said housing so that a first end of said second slider is adjacent the first end of said housing and the second end of said second slider is adjacent the second end of said housing;

swingably connecting a first end of a tiller to said first slider, and swingably connecting a second end of said tiller to said second slider, so that rotation of said tiller in a first rotational direction about a tiller axis drives said first slider in a first direction while driving said second slider in a second direction, and a second rotation of said tiller in a second rotational direction about said tiller axis drives said first slider in said second direction while driving said second slider in said first direction; and

linking a cartridge receiver to said first slider and to said second slider by their respective S-shaped slots, said cartridge receiver being tiltably movable between an upper position and a lower position when said sliders are driven by said tiller.

15. The method according to claim 14 further including the step of linking a gear train to said tiller.

16. The method according to claim 15 further including the step of linking a motor to said gear train for transmitting a force to said tiller.

17. The method according to claim 16 further including the step of providing a cam between said gear train and said tiller.

18. An optical disk system having a cartridge loading and unloading mechanism manufactured according to the method recited in any one of claim 14, 15, 16, or 17.

19. An apparatus for holding a cartridge, said apparatus comprising:

a cartridge receiver having first and second lifting points, said first and second lifting points located on opposite sides of said cartridge receiver and positioned to cause said cartridge receiver to tilt about a first axis when a force is applied to said first and second lifting points to thereby move a first end of said cartridge receiver from a first position to a second position wherein said first and second lifting points are provided by first and second lifting pins on said cartridge receiver;

a stop for impeding movement of said first end of said cartridge receiver when it has moved to said second position, said stop also providing a pivot point for movement of a second end of said cartridge receiver from a first position to a second position; and

a first slider having only one S-shaped slot formed therein and a second slider having only one S-shaped formed therein, said first lifting pin being slidably contained within said S-shaped slot of said first slider and said second lifting pin being slidably contained within said S-shaped slot of said second slider.

20. The apparatus according to claim 19 further including a tiller arm having a first end connected to a first end of said first slider and said tiller arm having a second end connected to a first end of said second slider, wherein rotation of said tiller arm about a tiller axis causes said first and second sliders to move in opposite directions.

21. A cartridge unloading apparatus for a disk drive having a cartridge loading end, a remote end, and a base plate, the apparatus for tiltably unloading a disk from a spindle magnet with a peeling action, the apparatus comprising in combination:

a first slider having a forward end adjacent the cartridge loading end of the disk drive and a remote end adjacent the remote end of the disk drive, said first slider further having only one S-shaped slot formed therein;

a second slider having a forward;

end adjacent the cartridge loading end of the disk drive and a remote end adjacent the remote end of the disk drive, said second slider further having only one S-shaped slot formed therein;

a tiller having a first end and a second end, said first end of said tiller being swingably linked with said forward end of said first slider, and said second end of said tiller being swingably linked with said forward end of said second slider, so that a first rotation of said tiller in a first direction about a tiller axis drives said first slider toward the cartridge loading end of the disk drive while driving said second slider toward the remote end of the disk drive, and a second rotation of said tiller in a second direction about said tiller axis drives said first slider toward the remote end of the disk drive while driving said second slider toward the cartridge loading end of the disk drive;

a cartridge receiver for receiving a respective cartridge containing a disk with a central hub, said cartridge receiver being moveable between an upper position and a lower position when said sliders are driven by said tiller; and

a first lifting pin and a second lifting pin associated with said cartridge receiver, said first lifting pin slidably fitting into one of said S-shaped slots, and said second lifting pin slidably fitting into the other S-shaped slot, said lifting pins being non-coplanar with a plane that is parallel to the ends of the disk drive and perpendicular to a base plate, and that passes through substantially the center of the spindle magnet, said base plate including one pair of substantially vertical slots in which said lifting pins are accommodated in a raising and lowering motion of the receiver.