JPH10241318A - Disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the damage of components such as a head. SOLUTION: A door 20 is rotatably mounted on the disk cartridge 1. When the disk cartridge 1 is loaded, the door 20 is opened in such a manner that an opening/closing pin 224 moving along a groove 223 is engaged with this door 20. When the opening/closing pin 224 is unable to return to the normal standby position by some cause, for instance, the front surface of the door 20 and a projected line part 206 are in contact each other, and the disk cartridge 1 becomes unable to be inserted furthermore. Consequently, the accident such as the damage generated by colliding with the head, lamp, etc., is avoided, even though the disk cartridge 1 is inserted in the state when the door 20 is not opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a disk cartridge containing a disk medium on which information can be recorded or reproduced. In detail, the door that opens and closes the opening for inserting the head is made to be a rotary type, and the notch that passes through the ridge for discriminating the door open on the disk drive only when the rotated door reaches a predetermined rotation angle. By providing the door
The present invention relates to a disk cartridge capable of securing a wide opening and preventing collision between a closed door and components inside a disk drive.

[0002]

2. Description of the Related Art As a conventional information recording disk cartridge, for example, the one shown in FIG. 24 is known. The disk cartridge 101 is, for example, a removable cartridge (removable cartridge) containing a disk-shaped recording medium having a large information capacity and used for an information processing apparatus. FIG. 1 shows a removable hard disk.

As shown in FIG. 25, a conventional disk cartridge 101 has a fixing screw 112 with a cartridge upper shell 109 and a cartridge lower shell 108 aligned.
It was concluded with. A disk 10 having information recording surfaces on both upper and lower surfaces 102a and 102b is provided therein.
2 and a clamp member 103 attached to the center of the disk 102 are housed. Generally, aluminum or glass is used as a base material of the disk 102.

The clamp member 103 comprises a pair of upper and lower sandwiching plates 104 and 105 and a fixing screw 106 for fastening them. The disk 102 is sandwiched between the holding plates 104 and 105 from above and below and fastened with fixing screws 106 so that the periphery of the center hole 107 of the disk 102 is held by the holding plates 104 and 105. The disk 102 is rotatably stored inside the disk cartridge 101.

A conventional disk cartridge 101
An opening 107 for allowing a recording or reproducing head to enter is provided on one side surface. A slide shutter 110 for closing the opening 107 to prevent dust and the like from being mixed when not in use, and a return spring 111 for automatically closing the opened slide shutter 110 are provided.

[0006] When recording or reproducing signals to or from the disk cartridge 101, the disk cartridge 101 is mounted on a disk drive (not shown). At this time, the slide shutter 110 slides against the urging force of the return spring 111, and
07 is released. When the disk cartridge 101 is mounted, the disk 102 is fixed to the shaft of the spindle motor of the disk drive with a magnet or the like and is driven to rotate. And recording or reproduction is performed.

[0007]

However, FIG.
In the disk cartridge 101 having the slide shutter 110 shown in (1), there is a physical limitation on the width dimension of the opening 107 that appears after the slide shutter 110 completes sliding. That is, since the slide shutter 110 is configured to slide on the side surface of the disk cartridge 101, the width of the slide shutter 110 must be less than half the width of the disk cartridge 101. The width of 107 is less than half the width of the cartridge.

As described above, the conventional disk cartridge 1
01, the opening 107 with respect to the width of the cartridge body.
Cannot be set wide, and is not suitable for a drive device having a rotary actuator in which a recording / reproducing head moves in a fan shape like a removable hard disk.

Further, the conventional disk cartridge 101
In the case of, when some abnormality occurs in the shutter opening / closing mechanism inside the apparatus and the disk cartridge 101 is inserted into the disk drive with the slide shutter 110 in the closed state, the main parts such as a lamp and a head arranged inside the apparatus are not included. The slide shutter 110 may collide, and in some cases, may be damaged and become nonfunctional.

Further, if the slide shutter 110 is accidentally disengaged from the disk drive-side shutter opening / closing mechanism while the disk cartridge 101 is being inserted or ejected, the slide shutter 110 closed by the return spring 111 is ramped. And the head may collide, causing breakage or the like.

In view of the above, the present invention has been made to solve the above-mentioned problems, and it is possible to secure a wide opening and prevent a collision between a disk cartridge door and components inside a disk drive. It proposes a disk cartridge that can be used.

[0012]

According to the present invention, there is provided a disk cartridge having a cartridge shell accommodating a disk medium, wherein the disk cartridge is mounted on a disk drive and records or reproduces a signal. An opening through which a head for recording or reproducing a signal with respect to a disk cartridge medium enters, and a rotary door for opening and closing the opening, the disk drive only when the rotated door reaches a predetermined rotation angle The door is provided with a notch into which the convex portion for judging the door opening / closing on the side enters.

When the disk cartridge is mounted on the disk drive, if the door is properly rotated and the opening is open, the ridge on the disk drive side enters the notch and the disk cartridge is mounted. Can be. Then, a head or the like is inserted into the cartridge through the opening, and recording or reproduction of a signal is performed.

On the other hand, when the disk cartridge is mounted on the disk drive, if the door does not rotate for some reason and the opening is not opened, the door comes into contact with the ridge, and the disk cartridge is inserted further. You can't do that.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the present invention, as shown in FIG. 1, the disk cartridge 1 is inserted into the disk drive 201 from the cartridge insertion slot 221 and signals are recorded or reproduced by the head 205a. The same parts as those described above are denoted by the same reference numerals, and detailed description is omitted.

First, the disk cartridge 1 will be described. As shown in FIG. 2, the disk cartridge 1 is fastened with fixing screws 112 in a state where the upper shell 9 of the cartridge and the lower shell 18 of the cartridge are aligned. The disk 102, whose both surfaces are sandwiched by the clamp member 103, is rotatably accommodated therein.

The cartridge shells 9 and 18 have an opening 1c into which the head 205a (FIG. 1) enters. A door 20 for closing the opening 1c (also shown in FIG. 3) is attached to prevent dust and the like from entering from the opening 1c, and is attached to the cartridge upper shell 9 together with the return spring 11 in advance.

As shown in FIG. 4, the door 20 is formed in a U-shape by bending a sheet metal, and the bent ends are side faces 31a and 31b facing each other. Shaft holes 32a, 32b (also shown in FIG. 6) are formed in the side surfaces 31a, 31b.

Rotation shafts 33a, 33b provided on the front side surface of the upper shell 9 of the cartridge in the shaft holes 32a, 32b.
(FIG. 2) is inserted, and the door 20 is rotatably attached to the front surfaces of the cartridge shells 9 and 18 as shown in FIG. The door 20 is connected to the opening 1 c of the disc cartridge 1.
Not only to close the cover but also to cover almost the entire width of the disc cartridge 1.

By employing the rotary door 20 in this manner, the opening 1 is smaller than that of the conventional disk cartridge 101 (FIG. 24) employing the sliding shutter 110.
The width of c can be widened. Note that the door 20 may be integrally formed of plastic as long as the required strength can be maintained. In this case, the manufacturing cost can be reduced.

As shown in FIG. 4, a notch (engaged pin) 20c is provided on the side surface 31a of the door 20.
A pin insertion hole 20d provided at a constant width on the front side of the door 20 is formed continuously. The notch 20c engages with a door opening / closing pin (engaging pin) 224 (FIG. 11) when the door 20 is opened or closed inside the disk drive.

As shown in FIG. 5B, a return spring 11 is wound around the rotation shaft 33a of one of the doors 20, and is housed inside the disk cartridge 1. One end of the return spring 11 is hooked on a hook 34 (FIG. 4) on the side surface 31a of the door 20, and the other end is hooked on the cartridge upper shell 9 (FIG. 2). Therefore, the door 20 is urged by the return spring 11 to close the door.

As shown in FIGS. 5B and 6B,
One side of the lower surface side of the cartridge lower shell 18 (FIG. 5)
In (b), a first groove 18d having a predetermined length is formed from the front portion to near the center. After the door 20 is completely opened, the first groove 18d is provided with a ridge 206 (FIG. 1) for detecting the door opening of the disk drive 201.
1) is to enter.

As shown in FIG. 6B, a linear cutout 35 is formed on a part of the side surface of the door 10. This notch 3
5 forms a straight line together with the first groove 18d when the door 20 rotates, and passes through the ridge 206 (FIG. 11).

As shown in FIGS. 5B and 6A,
Another side of the lower surface of the cartridge lower shell 18 (FIG. 5)
(In the right corner in (b)), a second groove 18c longer than the first groove 18d is provided from the front to the rear. The second groove 18c is
The projection 207 (FIG. 8) provided for preventing erroneous insertion provided at 1 enters. That is, the disk cartridge 1
Is inserted from the rear side, the convex portion 207 is inserted into the groove 18c.
(FIG. 8) cannot be engaged, preventing further insertion.

Before the door 20 is opened, the convex portion 207 is opened.
A notch 36 is formed in a lower portion of the side surface 31b of the door 20 in a straight line so that the door (FIG. 8) can pass therethrough. Also, the second
The reason why the groove 18c is set longer than the first groove 18d is that
As shown in FIG.
1 in order to protect the components inside the disk drive 201 so that an erroneous insertion can be determined at an early stage immediately after the insertion of the disk cartridge 1.

The door 20 in the closed state is locked by a lock mechanism shown in FIG. The lock mechanism includes a lock piece 41 attached to the front of the cartridge shells 9 and 18 so as to be able to advance and retreat, and a spring (not shown) for urging the lock piece 41 in a protruding direction. On the other hand, door 2
At 0, one end of the pin insertion hole 20d is bent inward to form a hook portion 42 which is hooked to the lock piece 41. Note that a curved surface 41a is formed on the top of the lock piece 41 for guiding the locking portion 42 to be locked again after the lock is once released.

For example, even if it is attempted to open the closed door 20 as shown in FIG. 7 (a), the latch 42 is hooked on the lock piece 41 to prevent inadvertent opening. Is done. As will be described later, when the disc cartridge 1 is inserted, the notch 2 is inserted as shown in FIGS.
The opening / closing pin 224 engaged with Oc presses the lock piece 41 to retreat, thereby enabling the door 20 to rotate. When the door 20 is closed, the hanging portion 42 is
The slide piece a slides over the lock piece 41 and is locked again.

Next, the disk drive 201 will be described. As shown in FIG. 1, the above-described disk cartridge 1 is inserted from a cartridge insertion port 221 of the disk drive 201. Inside the disk drive 201, an actuator 205 to which a recording / reproducing head 205a is attached, a lamp 208, and the like are attached. When the disc cartridge 1 is inserted, the door 2 of the disc cartridge 1 is
0 rotates, the head 205a and the lamp 208 enter from the opened opening 1c (FIG. 2), and recording or reproduction of a signal is performed.

The door opening and closing mechanism includes a side wall 22 as shown in FIG.
2a, a movable plate 225 having a door opening / closing pin 224 fixed vertically, a guide pin 226 for guiding the movement of the movable plate 225, and a return spring 227 for urging the movable plate 225. Consists of

As shown in FIG. 9, the groove 223 starts from the center of the side wall 222a on the cartridge insertion opening 221 side, then gradually rises toward the upper part of the side wall 222a, and thereafter forms horizontally along the upper part of the side wall 222a. Is done.
The opening / closing pin 224 moves along the groove 223, and the door 2
0 release operation is performed.

As shown in FIG. 10, the movable plate 225 is formed in a substantially triangular shape, and an opening / closing pin 224 is provided substantially in the center thereof.
Has been fixed. The front end of the moving plate 225 is bent to form a hook 228 for hooking a spring. Further, a fixing hole 229 for a guide pin 226 (FIG. 9) is provided on the rear upper portion of the movable plate 225. The side wall 2
The movable plate 225 is provided with three convex portions 225a for abutting the outer surface of the movable plate 22a (FIG. 9) to smoothly move the movable plate 225.
25 projecting.

As shown in FIG. 11, the movable plate 225 is mounted on the outside of the side wall 222a with the opening / closing pin 224 and the guide pin 226 inserted through the groove 223.
24 protrudes inward horizontally. As shown in FIG. 12, one end of the return spring 227 is connected to the hook 2 of the movable plate 225.
28, and the other end is hooked on a hook 331 formed on the side wall 222a. As shown in FIG. 13, the opening / closing pin 224 is positioned at the front end (standby position) of the groove 223 by the bias of the return spring 227.

A protruding portion 206 for detecting the open / closed state of the door 20 (FIG. 3) of the disk cartridge 1 is formed at the lower rear portion of the side wall 222a. This ridge 2
No. 06 can pass through the notch 35 only when the door 20 of the inserted disk cartridge 1 is opened.

Further, in FIG. 8, another side wall 222b
In the vicinity of the cartridge insertion opening 221 of the disk cartridge 1, the projection 20 engaging with the second groove 18c (FIG. 5) of the disk cartridge 1 is formed.
7 are protruded. That is, as shown in FIG. 22A, when the disk cartridge 1 is properly inserted from the front side, the projection 207 enters the second groove 18c, and the disk cartridge 1 can be inserted. On the other hand, FIG.
23 (b) and FIG. 23, when the disk cartridge 1 is erroneously inserted from the rear side, the projection 207 cannot engage with the second groove 18c (FIG. 22 (a)). Is prevented.

The operation when the disk cartridge 1 configured as described above is mounted on the disk drive 201 will be described below.

As shown in FIGS. 13, 16 and 21 (a), the opening / closing pin 224 is
3 is located at the front end. When the disc cartridge 1 is inserted, the notch 20c of the door 20 engages with the opening / closing pin 224. At this time, as shown in FIG. 7B, the lock piece 41 of the door 20 is pressed by the opening / closing pin 224 to release the lock.

Here, by setting the urging force of the return spring 227 (FIG. 16) to be larger than the return force of the lock piece 41, the door 20 is brought into contact with the door 20 as shown in FIG. Until the door 20 rotates, the unlocked state of the door 20 can be maintained.

Subsequently, as shown in FIGS. 14 and 17, when the disk cartridge 1 is inserted, the opening / closing pin 224 is pushed by the door 20 and moves. At this time, since the opening / closing pin 224 is guided by the groove 223, it moves toward the upper portion of the side wall 222a. Therefore, the door 20 engaged with the opening / closing pin 224 rotates clockwise, and the opening 1c (FIG. 3) is opened. After the rotation of the door 20, the linear notch 35 is oriented substantially horizontally, so that the ridge 206 can pass through.

As shown in FIG. 15, FIG. 18 and FIG. 21 (b), until the disc cartridge 1 further enters and reaches the mounting position,
6 enters the first groove 18d. Only when the door 20 is completely opened, the ridge 206 is
Thus, the disc cartridge 1 can be advanced to the further mounting position without any resistance by passing through the notch 35 of 0.

When the disc cartridge 1 is placed at the mounting position, the notch 35 is kept in the horizontal
6 is in contact with the upper surface. The disk cartridge 1
Are inserted in the correct direction, so that the protrusions 2 shown in FIG.
07 is the groove 1 of the disk cartridge 1 shown in FIG.
8c.

The moving plate 225 shown in FIG. 10 is provided with three convex portions 225a, which are formed on the side walls 222a (FIG. 9).
The sliding contact with the outer surface of the moving member 225 allows the moving plate 225 to move smoothly, and the position accuracy of the opening / closing pin 224 is enhanced. Further, the fixing position of the opening / closing pin 224 is located between the hook 228 and the guide pin 229 of the movable plate 225, thereby ensuring the stability of the operation and
Door 20 of disc cartridge 1 to be inserted (FIG. 13)
And the guide pin 226 is also prevented.

When the disk cartridge 1 is mounted,
A pair of head gimbal assemblies (HG shown in FIG. 1)
The actuator 205 and the lamp 208 constituted by A) enter the cartridge through the opening 1c. Further, when the pin 211 protruding from the chassis 202 is pressed by the cartridge lower shell 18,
The spindle motor 203 is mechanically moved upward to magnetically chuck the center hole of the disk 102 (FIG. 2).

While rotating the disk 102 by the spindle motor 203, the actuator 205 is rotated by a voice coil motor (not shown), and recording and reproduction are performed by the head 205a.

Next, a case where an abnormality occurs in opening the door 20 will be described. FIGS. 19 and 21C show a state where the disc cartridge 1 is inserted when the opening / closing pin 224 cannot return to the normal standby position for some reason and stops at the upper stage of the groove 223.

As shown in FIG.
0 does not engage, so the door 20 remains closed. At this time, the front surface of the door 20 comes into contact with the ridge portion 206, and the disk cartridge 1 cannot be inserted any further. Therefore, the disk cartridge 1 is inserted in a state where the door 20 is not opened, and the head 20 is inserted.
An accident that may cause damage by colliding with 5a, the lamp 208 (FIG. 1), or the like is avoided.

FIG. 20 shows a state in which the opening / closing pin 224 has come off the door 20 when the disc cartridge 1 is ejected. While the disk cartridge 1 is retracted, the head 205a and the ramp 208 (FIG. 1) are retracted from the opening 1c (FIG. 3), but if the door 20 is accidentally closed during this time, the door 20 and these parts are disengaged. You will collide. However, in the present invention, since the ridge portion 206 and the notch 35 of the door 20 are in contact with each other, the door 20 is kept open even though the opening / closing pin 224 is removed.

By continuously forming the ridges 206 in this manner, the disk cartridge 1 can be retracted while the door 20 is kept open. And
The position where the door 20 may be closed, that is, the head 205a
When the lamp 208 or the lamp 208 (FIG. 1) or the like completely comes out of the opening 1c (FIG. 3), the ridge 206 ends and the door 2
0 is no longer regulated and the door 20 closes. Therefore, an accident in which the door 20 closes and collides with these components is prevented.

As described above, the combination of the notch 35 of the door 20 and the ridge 206 provides two characteristic functions. First, as shown in FIG. 19, when the disk cartridge 1 is inserted, the ridge portion 206 passes through the notch 35 after the door 20 is opened, thereby detecting whether or not the door 20 is open. If not, the door 20 and the ridge 206 collide, and further insertion is hindered.

Second, as shown in FIG. 20, when the disc cartridge 1 is ejected, the door 20 and the opening / closing pin 22
Even when the engagement with the cover 4 is released, the ridge portion 206 and the notch 35 come into contact with each other to prevent the closing of the door 20 and protect the retreating head 205a (FIG. 1). is there.

Further, the shape of the side surface of the door 20 and the shape of the cartridge lower shell 18 may be formed into a predetermined shape, and the cost can be reduced without adding new parts.
Although the present invention has been described with respect to an example in which the present invention is applied to a removable hard disk, the present invention may be applied to a device which records or reproduces a signal on or from another disk.

[0052]

As described above, in the disk cartridge of the present invention, the door for opening and closing the opening is made to be of a rotary type, and only when the rotated door reaches a predetermined rotation angle, the door opening determination on the disk drive side is made. The door is provided with a notch into which a convex portion for use enters.

Therefore, in the present invention, since the rotary door is used, the opening can be made wider than when a slide shutter is used, and the recording / reproducing head has a fan-like shape like a removable hard disk. The present invention is suitable for a drive device having a rotary actuator serving as a movement locus.

If the door is not opened for some reason when the disk cartridge is mounted, the convex portion on the disk drive side cannot enter the notch of the door, so that the mounting of the disk cartridge is hindered.
This has the effect of preventing damage to internal components such as the head and the lamp beforehand.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of each part of the disk cartridge 1.

FIG. 3 is a perspective view showing the appearance of the disk cartridge 1.

FIG. 4 is a perspective view showing the shape of the door 20.

5 is a front view and a bottom view of the disk cartridge 1. FIG.

FIG. 6 is a view as viewed in the direction indicated by arrows A and B in FIG.

FIG. 7 is a diagram showing a configuration of a lock mechanism.

FIG. 8 is a top view of the disk drive 201.

FIG. 9 is a perspective view showing a configuration of each part of the door opening and closing mechanism.

FIG. 10 is a perspective view showing the shape of a moving plate 225.

FIG. 11 is a perspective view of a door opening and closing mechanism.

FIG. 12 is a top view of the door opening / closing mechanism.

FIG. 13 is a cross-sectional view showing a door opening operation (1/3).

FIG. 14 is a sectional view showing a door opening operation (2/3).

FIG. 15 is a sectional view showing a door opening operation (3/3).

FIG. 16 is a sectional view showing an operation (1/3) of the moving plate 225.

FIG. 17 is a sectional view showing an operation (2/3) of the moving plate 225.

FIG. 18 is a sectional view showing an operation (3/3) of the moving plate 225.

FIG. 19 is a cross-sectional view showing a state where the opening / closing pin 224 stops halfway.

FIG. 20 is a cross-sectional view showing a state in which the opening / closing pin 224 has come off.

FIG. 21 is a visual acuity chart of arrow C in FIG. 13, a visual acuity chart of arrow D in FIG. 15, and a visual acuity chart of arrow E in FIG.

FIG. 22 is a diagram showing a relationship between a convex portion 207 and a groove 18c.

FIG. 23 is a top view when the disk cartridge 1 is inserted from the rear.

FIG. 24 is a perspective view showing the appearance of a conventional disk cartridge.

FIG. 25 is a perspective view showing the configuration of each part of a conventional disk cartridge.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disc cartridge, 1c ... Opening, 2
0: door, 20c: notch, 18c: second groove, 18d: first groove, 31a, 31b: side surface, 35: notch, 41: lock piece , 201 ...
.Disk drive, 206 ... ridge, 207
・ Convex part, 221 ... cartridge insertion port, 222a
..Side walls, 223 ... grooves, 224 ... open / close pins,
225: moving plate, 226: guide pin, 225
a: convex portion, 227: return spring

Claims (9)

[Claims] 1. A disk cartridge, comprising: a cartridge shell accommodating a disk medium, wherein the disk cartridge is mounted on a disk drive and records or reproduces a signal. A notch that has an opening to enter, and a rotatable door that opens and closes the opening, and enters a ridge for disc opening / closing door opening / closing determination on the disk drive only when the rotated door reaches a predetermined rotation angle. Is provided on the door. 2. The disk cartridge according to claim 1, wherein said notch is provided on at least one side surface of said door rotatably mounted on a side surface of said cartridge shell. 3. The door according to claim 1, wherein a pin to be engaged with a door-opening engagement pin provided on the disk drive side is provided on at least one side surface of the door. Disk cartridge. 4. The disk cartridge according to claim 1, wherein an angle at which the opening is completely opened is set to the predetermined rotation angle. 5. The disk cartridge according to claim 1, wherein a groove that is continuous with the notch is formed in one side surface of the cartridge shell when the door rotates to a predetermined rotation angle. 6. A groove is formed on the other side surface of the cartridge shell to enter a convex portion for preventing erroneous insertion of the disk drive only when the disk cartridge is mounted in the disk drive in a correct direction. The disk cartridge according to claim 1, wherein: 7. The disk cartridge according to claim 1, wherein said door is formed of sheet metal. 8. The disk cartridge according to claim 1, wherein said door is formed of plastic. 9. When the ridge for discriminating the door opening of the disk drive enters the notch, the notch contacts the ridge to prevent closing of the door. 2. The disk cartridge according to claim 1, wherein: