JP2524750Y2 - Disk cartridge - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge in which an information recording medium such as a hard disk, in particular, an optical disk, a magneto-optical disk and a magnetic disk is rotatably housed in a case.

[0002]

2. Description of the Related Art In general, compact discs or video discs used for digital data storage devices and video equipment are handled in a tray system or a cartridge system using a case so as to prevent dust, dirt and scratches. The upper plate and the lower plate are connected to the slider to cover the pickup insertion hole and / or the rotary drive shaft insertion hole provided in the case when not in use and to expose the use drive when used. And a restoring spring that urges the slider in a direction to close the pickup insertion hole and the rotary drive shaft insertion hole. One end of the restoring spring is connected to the case. And the other end was locked to the slider.

For example, as shown in FIG. 9, shutter plates 32 ₁ , 3 sandwiching both sides of a case 31 are provided.
2 ₂ are respectively fixed to the synthetic resin of the slider 33,
The slider 33 is slidable along the vicinity of the end of the case 31.
2 _1, 32 ₂ are slidably guided, to open and close the insertion hole such as the head of the case 31. Further, the shutter plates 32 ₁ , 32 ₂
Is biased by a restoring spring 34 so as to close the insertion hole when not in use. The restoring spring 34 is attached at one end to the case 1 and at the other end to The slider 3 was locked.

[0004]

Since the conventional restoring spring is locked between the case and the slider, the slider has a sliding guide portion for the case, a shutter plate mounting portion, and the like. It is necessary to provide a locking portion for the restoration spring, the shape becomes complicated, the manufacture of the slider molding die is not easy, the reliability of the die is reduced, and the strength of the slider is also reduced. There was a problem. The present invention
To solve such conventional problems, simplify the shape of the slider, facilitate the manufacture of the mold, improve its reliability,
An object of the present invention is to provide a disk cartridge capable of improving the strength of a slider and further improving productivity.

[0005]

According to the present invention, a case 2 for rotatably storing an information recording medium 1 and an upper plate 4 for opening and closing a pickup or a rotary drive shaft insertion hole 3, 15 formed in the case 2 are provided. ₁ and the shutter plate 4 is cross linked to the lower plate 4 ₂ to the slider 4 ₃ configured substantially U-shaped, the elastic member 20 to the shutter plate 4 urges to close the insertion hole 3,15 in a disk cartridge comprising a spring engaging portion 1 at bent piece at one end of the upper plate 4 ₁ and the lower plate 4 ₂
1 constitute, the spring locking portion 11 disposed on the end face abutting position of the slider 4 _3, locks the one end of the elastic member 20 to the respective spring locking portion 11, the elastic The cartridge is characterized in that the other end of the member 20 is locked to the case 2.

[0006]

According to the present invention, the elastic member 20 for urging the shutter plate 4 to close the pickup insertion hole 3, the rotary drive shaft insertion hole 15 and the like has one end in the case 2 and the other end in each of the plates 4 ₁ and 4. for locking the _second spring locking portion 11 and 11, the slider 4 ₃ to the elastic member 20 it is not necessary to form the engagement portion of the slider 4 ₃ shape is simplified easily manufacture the mold , and the strength improves, also smooth operation of the shutter plate 4 including the slider 4 ₃ is secured, further, can also each spring engaging portion 11, 11 is easily molded by folding like.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an optical disk cartridge will be described. A disk-shaped information recording medium 1 of an optical disk, and a case composed of an upper case and a lower case for rotatably storing the information recording medium 1 are described. 2, upper plate 4 ₁ and the lower opening and closing the insertion hole 3, 15 in clamped state case upper and lower surfaces for opening and closing the pick-up and rotating the drive shaft insertion hole 3 and 15 for recording and reproduction formed in the case 2 be those having the shutter plate 4 in cross-section configured substantially U-shaped and connected to each shutter plate 4 consisting of a plate 4 ₂ to the slider 4 ₃ lubricity good material such as polyacetal resin, the shutter plate 4 of the upper plate 4 ₁ and to face the joint surface between the lower plate 4 ₂ and the slider 4 ₃ a protrusion 7 which is fitted to the engagement hole 6 and engaging hole 6 with provided respectively, further the slide And bonding surface of da 4 _3, a fitting portion 9 having the upper plate 4 ₁ and variable those pieces 8 and Taise' surface of the lower plate 4 ₂ facing thereto, the variable those pieces into the fitting portion 9 An optical disk cartridge is provided in the case 2 by a shutter plate structure provided with a restriction lock piece 10 which is bent and pushed into the case 2.

[0008] top plate _{4 1} and the lower plate 4 of the shutter plate 4
Folding _2, the slider 4 ₃ has a bent end which joining end is bent in a stepped shape which is lowered from the shutter plate upper surface having a horizontal and vertical plane with, launched vertically with respect to the horizontal plane provided a pair isolate engagement holes 6, 6 in the music piece, the variable those pieces 8 of the slider 4 ₃ is bent at both ends at a notch 10 ₂ inserted into curved end 10 _1, 10 ₁ therebetween It is preferable that the regulating lock piece 10 is provided as a bent piece, and a bent piece at one end constitutes a locking portion 11 of an elastic member 20 such as a spring, and locks one end of the elastic member 20. Then, the other end is locked to the case 2.

The fitting portion 9 includes a slider 4
The inner surface of the ₃ pair isolate L-shaped of the variable those pieces 8,8 facing deployment, the opposing distal end portion of the variable those pieces 8, 8 formed on the chamfered portion ₈₁ of the slope, and both ends To the curved ends 10 ₁ , 10 ₁
Are to ensure immobilization of the projecting stopper surface 9 ₁ in a central position regulating lock piece 10 of the fitting portion 9 in which and a slit capable of inserting the restriction lock piece 10 which is bent.

[0010] Incidentally, the slider 4 ₃ projecting a partition wall 14 along the slider moving direction at the center of the inner surface,
The variable abutment 8 and the protrusion 7 for regulating the position in the sliding direction are provided in a pair on each of the upper and lower inner surfaces defined by the partition wall 14. the oppositely arranged between the regulating lock piece 10 pairs in set and a variable equivalent piece 8 and the notch 10 ₂ may be provided either under a relative relationship between the shutter plate 4 and the slider 4 _3. The engagement hole 6 and the restriction lock piece 10 are formed on a vertical piece facing the engagement projection 7 and the variable abutment 8, but are provided on a horizontal piece to correspond thereto. Each member may be provided.

[0011] The in partition wall 14 provided in the slider 4 ₃ easily by sliding is fitted engagement supported on guides provided on the case side wall elongated groove, on the shutter plate 4 to the concave slide area 12 in case the surface plate 4 ₁ and the lower side of the lower plate 4 ₂ is controlled so as to slide, the upper plate 4 ₁ and the pressing piece 13 lower plate 4 ₂ tip edge provided in the bent end stepped in case 2 It is designed to be set by inserting it. Further, in the case 2, the hub 16 of the disk 1 is disposed in a circular rotary drive shaft insertion hole 15 formed at the center thereof, and the case 2 slides between the rectangular pickup insertion hole 3, the pin insertion hole 17 and the shutter plate 4. The shutter plate 4 has a sliding area 12 that can be disposed and a pressing piece 13 at the end of the shutter plate. When not in use, the elastic member 20 covers the opening of the shutter plate 4 and slides when inserting the disk cartridge. Then, they are slid so as to open these openings. In the figure, reference numeral 18 denotes an erroneous operation preventing claw.

[0012] Incidentally, the upper in the cartridge front side incorporates inserted under the shutter plate presser plate 13 with one end of the upper plate 4 ₁ and the lower plate 4 ₂ of the shutter plate 4 to the case 2 on the upper and lower surfaces of the case 2 plate 4 ₁ and positioned by tightening face facing the other end of the lower plate 4 ₂ while fitting the slider 4 ₃ the partition wall 14 in the guide long groove, insert variable those between the upper plate 4 ₁ and the lower plate 4 ₂ When the restricting lock piece 10 is pushed into the fitting portion 9 between the pieces 8 and 8 while being pressed and bent, the locking piece is locked, and the engaging hole 6 is also fitted into the projection 7 so that the upper plate of the shutter plate 4 is fitted. 4 ₁ and the lower plate 4 ₂ is formed integrally connected to the slider 4 _3, the shutter plate 4 becomes to be deployed assembly, it is possible to efficiency good productivity work slider region 12 of the case 2 at the same time.

The present embodiment can be applied not only to a disc-shaped information recording medium but also to a tape-shaped information recording medium stored in a case.

[0014]

According to the present invention, the spring support portion is provided on one end of the upper plate and the lower plate of the shutter plate so as to be in contact with the slider by a bent piece, so that the press forming of the shutter plate is facilitated.
In addition, the locking and assembling of the springs are facilitated, which improves the efficiency of the assembly work, and further simplifies the shape of the slider, thereby facilitating the manufacture of the slider molding die, improving its reliability and improving the strength of the slider. The shutter plate can be connected in good condition, smooth sliding operation can be ensured, and the reliability of the cartridge can be greatly improved. It is safe to use without any risk of deterioration.

[Brief description of the drawings]

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

FIG. 2 is a plan view of FIG. 1 from which an upper case is removed.

FIG. 3 is an enlarged vertical sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged perspective view of a shutter plate in a separated state.

FIG. 5 is an enlarged vertical sectional view taken along line BB of FIG. 2;

FIG. 6 is an enlarged vertical sectional view taken along line CC of FIG. 2;

FIG. 7 is an enlarged vertical sectional view taken along line DD of FIG. 2;

FIG. 8 is an enlarged sectional plan view of a part of the shutter plate.

FIG. 9 is a partially cut perspective view of a main part showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Information recording medium 2 Case 3 Pickup insertion hole 4 Shutter plate 4 ₁ Upper plate 4 ₂ Lower plate 4 ₃ Slider 6 Engagement hole 7 Projection 8 Variable contact piece 9 Fitting part 10 Restriction lock piece 10 ₂ Notch 11 Locking part 12 Slide Area 15 Rotary drive shaft insertion hole 20 Elastic member

Claims (1)

(57) [Scope of request for utility model registration] 1. A data Ke of the recording medium 1 is rotatably received
Over scan 2 and upper plate 4 ₁ and the lower plate 4 ₂ to open and close the pickup and the rotation drive shaft insertion hole 3, 15 formed in the case 2
The cross linked is configured substantially U-shape in the slider 4 ₃
A shutter plate 4 and the shutter plate 4 are inserted into the insertion holes 3 and 15.
In the disk cartridge having an elastic member 20 for urging so as to close the one side of the upper plate 4 ₁ and the lower plate 4 ₂
A spring locking portion 11 is formed by a bent piece at an end, and the spring locking portion 11 is provided.
11 were arranged at the end face abutting position of the slider 4 _3, respective bar
One end of the elastic member 20 is locked to the locking portion 11.
Then, the other end of the elastic member 20 is locked to the case 2.
Cartridge, characterized in that the.