JPH0525093Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a hard disk, especially a double-sided hard disk, housed in a case.
It concerns cartridges.

[Conventional technology]

Generally, a compact disc (CD) or video disc (LD) as an information recording carrier is taken out of its packaging case and set in a recording/playback device such as a disc player for use.

[Problem that the invention attempts to solve]

Conventional disks of this type tend to collect dirt and dust during handling, are particularly susceptible to damage, and are also affected by temperature changes, so it is necessary to protect the disks from these.For this reason, a tray system or cartridge system is adopted. However, with double-sided hard disks, the disk is stored in the disk storage area of the tray or case, and the shutter in the window hole for inserting the pick-up is opened when playing, and the window hole is closed with the shutter when handling. It is being However, cartridges and the like are generally provided with an actuator on the mechanical side that opens and closes the shutter that opens and closes the pick-up insertion window. There is also another type of shutter in which the shutter is always urged in the closing direction by a spring or the like. If a brake structure is adopted that utilizes the movement of the shutter to prevent scratches and scratches caused by the free rotation and movement of the disc when not in use, the opening direction of the brake mechanism and the shutter are linked, so the structure of the cartridge can be improved. It becomes extremely complex, making it difficult to realize a smaller cartridge, extremely expensive, and prone to malfunctions due to wear of each moving part.This not only makes handling difficult, but also makes the product difficult to make. This was a problem because it significantly reduced the reliability of the system.

The present invention is an attempt to accurately eliminate these conventional drawbacks, and in order to brake and release the disk in the case, a mechanical actuator slides in the longitudinal direction or width direction of the cartridge, and the shutter is The structure of the cartridge can be greatly simplified while still allowing the mechanism to open and close to be accepted, and while satisfying the functions of a shutter, the disk can be kept floating in the air, and the recording surface of the disk can be directly connected. The object of the present invention is to provide a disk cartridge that can be safely and securely held inside a case so as not to come into contact with the case.

[Means for solving problems]

The present invention includes a case A consisting of a disk 3, an upper case 1 and a lower case 2 for rotatably housing the disk 3, a shutter 5 for opening and closing a pick-up insertion window 4 formed in the case A, A shutter lock member 6 that locks or releases the shutter 5; and a disk lifter 7 that moves in conjunction with the shutter lock member 6 and receives the upper and lower surfaces and outer peripheral end surface of the disk 3 to hold the disk approximately at the center in the thickness direction of the case. In the disc cartridge equipped with the above, the operation piece 6 ₂ on the shutter lock member 6 is inserted into the guide groove 12 1 from the notch 12 provided within the range of the side guide grooves 12 ₁ , 12 ₁ formed on both side surfaces of the case _A. Concave groove-shaped shutter opening/closing guide grooves 12 ₂ are provided on the front side of the case and are continuous to the front of the guide grooves 12 ₁ , 12 _{1 .} uneven part 20 for fitting into the wall;
21.

〔Example〕

The present invention has a case A consisting of a disk 3, an upper case 1 and a lower case 2 for rotatably housing the disk 3, and a shutter 5 for opening and closing a pick-up insertion window 4 formed in the case A. ,
The case A is equipped with a shutter lock member 6 that locks or releases the shutter 5, and a disk lifter 7 that is connected to the shutter lock member 6 and receives the upper and lower surfaces and the outer peripheral end surface of the disk 3. The shutter lock member 6 is slidable in the cartridge insertion direction.
The disk lifter 7 is moved to the disk 3 by sliding movement.
When the shutter 5 is closed, the disc 3 is supported in a suspended state within the case A by being biased toward the rear side of the case while holding the disc 3 at approximately the center in the thickness direction of the case. The disk lifter 7 is arranged so as to be separated from the disk 3 when the shutter 5 is opened. Then, the operation piece 6 ₂ on the shutter lock member 6 is arranged to protrude into the guide groove 12 ₁ from the notch 12 provided within the range _of the side guide groove 12 ₁ formed on the side surface of the case, and Guide groove for opening and closing the shutter continuous on one side 12 ₂
By providing this on the front side of the case, actuator 2 on the mechanical side
2 is inserted into the operation piece 6 ₂ or the insertion hole 5 ₂ formed in the shutter 5 when the cartridge is inserted into the mechanism.
Alternatively, the brake can be released by being engaged with the end and sliding. In this case, the actuator 22 is
It is designed to accept a mechanism that opens and closes the shutter by sliding in the front-rear direction or width direction of the cartridge, and depending on the mechanism of the mechanism, the side guide groove 12 ₁ on one side or both sides may be The opening/closing guide groove 12 ₂ on the front side of the cartridge may be continuous with the opening/closing guide groove 12 2 over the entire area.

The shutter lock member 6 and the disk lifter 7
For example, a guide pin 10 and a guide groove ₆₃ for engaging the guide pin 10 are provided in correspondence with the shutter lock member 6 and the disk lifter 7, respectively. A guide pin 10 is provided protrudingly provided on the shutter lock member 6, and a corresponding guide groove ₆₃ is provided on the shutter lock member 6, but since they are in a relative relationship, it is also possible to provide them in the opposite manner. In any case, the guide pin 10 is always in contact with the guide groove ₆₃ by the biasing means,
By sliding the shutter lock operating piece ₆₂ , which is arranged so as to be freely slidable, and if necessary, the opposite surface of the guide groove ₆₃ is set so as to be always spaced apart from the guide pin 10 and protrudes from the side wall of the case.
The structure is such that the disc lifter 7 rotates around the support shaft 11 in conjunction.

The shutter 5 is composed of a holding plate member having a U-shaped cross section that is slidably fitted along both surfaces of the upper case 1 and the lower case 2 of the case A, and has a concave surface formed in the range in which the shutter can slide. 24 and the locking portion 6 of the shutter lock member 6
₁ through a hook-shaped locking tongue piece 61.

The shutter lock member 6 is an operating lever for operating each operating section, and has a locking section ₆₁ at one end for locking the shutter 5, and a sliding notch formed in the side wall of the case A on the side surface of the operating member. Part 12
The operation piece ₆₂ is provided with a protruding operation piece ₆₂ , and a dustproof closing wall part ₆₄ that continuously covers the sliding notch 12 of the operation piece 62 is integrally extended near the side wall of the case A. , and a guide groove 6 ₃ or a recessed portion corresponding to the guide pin 10 serving as the connecting portion of the disk lifter 7 is provided, and a pair of shutter lock members 6 are provided facing each other near both sides of the insertion side front surface of the case A. is slidably fitted between the case side wall and a guide rib 18 protruding from the inner bottom surface of the case, or in a groove or gap inside the case, respectively, and the spring receiving part 14 and the spring supporting part 13
The case A is biased toward the front insertion side by a spring member 8 that is engaged with the case A. That is, one end of the spring member 8 is engaged with the shutter lock member 6, and the other end is engaged with the disc lifter 7.

Furthermore, the disk lifter 7 is a claw member having a U-shaped cross section and a recess ₇₁ along the outer periphery of the disk 3, which also functions as a lifter to catch and lift the disk 3. A pair of elastic members 9 are provided inside the case facing the case insertion side so as to be able to freely and slightly move up and down, and on the surface that contacts the outer circumference of the disk, for example, on the inner surface of the recess or on the upper and lower surfaces as necessary. It is equipped with
The elastic member 9 is preferably made of rubber or a soft plastic material such as polyethylene, polypropylene or vinyl chloride.
This is useful for preventing rattling of the disk 3 or damage to the outer periphery of the disk.

Note that the approximately U-shaped tip formed at one end of the disk lifter 7 has a concave portion ₇₁ whose upper and lower inner surfaces are formed into a tapered inclined surface ₇₂ or a rounded curved surface so that the disk 3 can be formed into a concave portion as a tapered tongue. 7 ₁ , and a guide pin 10 is provided protruding from the other end to correspond to and interlock with the guide groove 6 ₃ of the shutter lock member 6. This guide groove 6 ₃ As shown in FIG. 3, the opposing surface may be a recess with opposing surfaces, or a recess with no opposing surface and a clearance that eliminates contact. It is also possible to arbitrarily change the setting position of the pin 10.

Further, as the spring member 8, a coil spring may be tensioned in the sliding direction of the shutter lock member 6, or may be tensioned between the interlocking disc lifter 7 and the case fixing portion, or
A coil spring may be wound around the shutter lock member 6 to provide a restoring force, and in either case, the shutter lock member 6 is biased toward the front insertion side.

Furthermore, in the embodiment, on the rear surface side opposite to the front surface on the insertion side of the case A, the inner bottom surfaces 1 ₁ , 2 1 of each case 1 and ₂ are formed on at least a part of the inner side of the case against which the stored disk hits. Inclined surface portions 1 ₂ , 2 ₂ are provided toward approximately the center in the thickness direction of the case so that the disk 3 is guided toward the center.

These inclined surfaces 1 ₂ , 2 ₂ have slippery disk holding members 1 ₃ , 2 ₃ that run along the surfaces, such as ultra-high molecular weight polyethylene, permeable high molecular weight polyethylene foam, graphite Teflon, polyester (PET).
Alternatively, select a sheet of metal such as stainless steel and attach it to the inner bottom surface 1 ₁ of the upper case 1 and lower case 2,
2 _{and 1} may be attached and fixed facing each other.

In the figure, 1 ₄ and 2 ₄ are concave surfaces formed on the inner bottom surface of the case and are formed in the movement range of the disk lifter 7.

11 ₁ supports the disk lifter 7 with a pedestal.
15 is a screw, 16 is a groove, 17 is a recessed portion of the slippery adhesive sheet 20, and 21 is a convex portion.

When the disk/cartridge is inserted into the disk player and set up, the operation pieces ₆₂ protruding from the guide grooves ₁₂₁ on both sides of the cartridge engage with the actuator 22 on the mechanical side, and the operation pieces ₆₂ slide toward the rear side of the cartridge. Move the shutter lock member 6
move. As the shutter lock member 6 slides, the shutter 5 is moved to the hook-shaped locking portion 61 of the locking tongue piece _61.
The shutter 5 is moved in the window opening direction by an opening/closing mechanism (not shown) within the device and held in the open position, and the disk lifter 7 rotates around the support shaft 11 to close the case A. disk 3 inside
The disk 3 is released and is safely supported on the slippery adhesive sheet 17 at the inner bottom of the disk storage area, and then attached to the drive member (not shown) in the device. Engaged and held. On the other hand, when taking out the cartridge from the disk player, the disk 3 is disengaged from the drive member in the case A and supported on the slippery adhesive sheet 17, and then the shutter 5 is moved in the closing direction by the opening/closing mechanism to open the window. While the hole 4 is closed, the shutter lock member 6 is slid toward the front insertion side by the spring member 8, and the disk lifter 7 is interlocked to fit the disk 3 into the recess, and the disk 3 is positioned approximately at the center in the thickness direction of the case. While holding the disk 3 in a floating state, the disk 3 is urged and supported toward the rear side opposite to the case insertion side, and at the same time, the shutter 5 is held closed by the locking portion ₆₁ and the locking tongue piece 61. .

When not in use, the disk lifter 7 is always in contact with the guide groove ₆₃ of the shutter lock member 6 due to the bias of the spring member 8, and holds the disk 3 at approximately the center position in the thickness direction of the case. The disc 3 can be used safely without rubbing on the recording surface part of the disc 3, preventing scratches from occurring, and even when handling the disc 3, the disc 3 is guided to the center position of the case A and can be kept suspended in the air.

[Effect of idea]

The present invention is based on the operation piece 6 on the shutter lock member.
₂ are respectively protruded from the notches 12 provided within the range of the side guide grooves 12 ₁ , 12 ₁ formed on both side surfaces of the case A into the guide groove 12 ₁ , and are arranged in front of the guide grooves 12 ₁ , 12 _{1 .} A continuous concave shutter opening/closing guide groove 12 ₂ is provided on the front side of the case, and the front wall forming the shutter opening/closing guide groove 12 ₂ is provided with fitting uneven parts 20 and 21, so that the upper and lower The guide groove on the joint surface of the front wall of the case is formed in a strong and safe manner, allowing reliable handling without interfering with the opening and closing operations of the shutter and without causing malfunctions, and even from either the top or bottom. Even if we adopt an interlocking structure that can be operated and utilizes the movement of the shutter to freely rotate the disk or apply the brake, the shutter function can be satisfied without complicating the configuration, and it is possible to avoid wear and tear of each operating part. In addition to reducing the occurrence of malfunctions as much as possible, the reliability of the product due to opening and closing of the shutter does not deteriorate, and the degree of freedom in mechanical design on the mechanical side can be greatly expanded. Since the disk is held and fixed by the disk lifter during handling (handling), it is possible to properly support the disk without applying excessive force to the disk.Furthermore, only the non-recording surface of the disk can be lifted by the disk support member when the case is lifted. Since the shutter is held inside the cartridge, it can be used safely without affecting the recording surface, and since the shutter is locked by an operating member when closed, the shutter will not be opened or closed except when the cartridge is in use, preventing dust from getting inside the cartridge. This prevents the intrusion of foreign substances and damage from outside.

[Brief explanation of drawings]

Figure 1 is a partially cutaway plan view, Figure 2 is a vertical sectional view along the line shown in Figure 1, Figure 3 is a partially enlarged plan view, Figure 4 is its front view, and Figure 5 is its side view. 6 is a partial perspective view of the disc lifter in a separated state, FIG. 7 is a partially cutaway side view of the disc lifter, FIG. 8 is a perspective view thereof, and FIG. FIG. 10 is a perspective view of a part of another embodiment in a separated state. A...Case, 1...Upper case, 2...Lower case, 3...Disk, 4...Pickup insertion window hole, 5...Shutter, 6...Shutter lock member, 6 ₁ ...Locking part, 6 ₂ ... operation piece, 6 ₃ ... guide groove, 7 ... disk lifter, 7 ₁ ... recess,
8... Spring member, 9... Elastic member, 10... Guide pin, 11... Support shaft, 12... Operation piece sliding notch, 12 ₁ ... Side guide groove, 12 ₂ ... Shutter opening/closing guide Groove, 20... recess, 21... protrusion, 22... mechanical side actuator.

Claims (1)

[Scope of utility model registration request] A case A consisting of a disk 3, an upper case 1 and a lower case 2 for rotatably housing the disk 3, a shutter 5 for opening and closing a pick-up insertion window 4 formed in this case A, and the shutter 5.
a pair of shutter lock members 6, 6 for locking or releasing the shutter lock member 6, and a disk lifter that moves in conjunction with the shutter lock member 6 and receives the upper and lower surfaces and outer peripheral end surface of the disk 3 to hold the disk approximately at the center in the thickness direction of the case. 7, 7, the operation piece ₆₂ on the shutter lock member 6 is guided by a notch 12 provided within the range of side guide grooves ₁₂₁ , ₁₂₁ formed on both side surfaces of the case A. Shutter opening/closing guide grooves 12 ₂ are provided on the front side of the case in the form of concave grooves that protrude from the grooves 12 ₁ and continue in front of the guides 12 ₁ , 12 ₁ , and the shutter opening/closing guide grooves 12 ₂ are formed. A fitting uneven portion 20 is provided on the front wall of the
A disk/cartridge characterized by comprising 21.