JPS6370979A - Cartridge for information storing medium - Google Patents

Abstract

PURPOSE:To surely prevent the floating-up from each other of both covering members, and to secure the protection of an information recording medium by forming fitting parts, which fit in each other under a press-in state, on the surface parts, opposing each other, of the two covering members of the cartridge. CONSTITUTION:On the surface parts, opposing each other, of covering members 2a, 2b to constitute a cartridge main body 2, plural number of the fitting parts for preventing the floating-up which can be fitted to each other under the press-in state, are arranged at suitable points. Each of these fitting parts for preventing the floating-up consists of a recessed type boss part 50 and a projecting type boss part 51, the outside diameter of which is a little larger than the inside diameter of the recessed type boss part 50, and under a condition that both covering members 2a, 2b, in which parts are installed inside, are laid one on top of the other at the prescribed position, they come into the state that the projecting type boss part 51 is pressed-in to the recessed type boss part 50, by applying the pressure of a some degree from the directions of faces. Thus, the two covering members 2a, 2b do not float up even when they are influenced by a warp caused at the time of being molded, and besides, a gap, through which a dust and a dirt penetrate, does not appear, and an optical disk kept in the inside of them is surely protected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Industrial Field of Application) The present invention relates to an improvement in a cartridge for an information storage medium, such as an optical disk, which accommodates an information storage medium.

(Prior Art) In recent years, for example, information has been stored by irradiating the surface of an information storage medium such as an optical disk with narrowly focused light, or information is reproduced by detecting reflected light from the surface of the optical disk. Information storage media have been put into practical use.

Although such information storage media have extremely unique features such as being able to store and reproduce high-density information, if there is dust, chips, etc. attached to the surface or scratches, the surface may be damaged. There was a problem in that the progress of the light, such as a laser beam, irradiated to the device was obstructed, making it impossible to accurately store and reproduce information.

Therefore, conventionally, the information storage medium is housed in an information storage medium cartridge (hereinafter simply referred to as a cartridge) to facilitate protection and handling of the information storage medium.

Normally, the cartridge body of the above-mentioned cartridge has a structure in which two cover members are overlapped and fixed at the four corners with multiple bolts and nuts, so that information storage media and other parts can be easily assembled. ing.

(Problem to be Solved by the Invention) However, even if two cover members are superimposed and their four corners are fixed, the unfixed portions will float outward due to the warpage during molding of the cover members, and the joint There have been problems such as gaps being created in the cartridge, allowing foreign matter such as dust and dirt to enter the cartridge, and the thickness of the cartridge not being uniform, resulting in an unsightly appearance and inconvenience in handling in an autochanger.

The present invention has been made based on the above-mentioned circumstances, and an object thereof is to reliably prevent the two cover members constituting the cartridge body from lifting up from each other while having a simple structure, and to prevent information stored therein. It is an object of the present invention to provide a cartridge for an information storage medium that can reliably protect the storage medium, as well as improve assembly efficiency and product precision.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention has a cartridge body formed by overlapping two cover members and housing an information storage medium therein. In the information storage medium cartridge, a fitting portion is formed on the mutually opposing surface portions of the two cover members in a press-fit state to prevent the cover members from lifting up.

(Function) That is, the present invention forms a fitting portion that is press-fitted into the mutually opposing surface portions of the two cover members constituting the cartridge main body to prevent the cover members from lifting up as described above. This makes it possible to reliably prevent the two cover members from lifting up from each other, thereby preventing the creation of gaps where dust and dirt can enter, and ensuring the protection of the information storage medium housed inside. It is possible to maintain the two covers in an overlapping state before they are fixed with nuts, which improves the ease of assembly, and also makes it possible to make the thickness of the cartridge uniform, thereby improving product accuracy.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. 1 and 2 show the external appearance of an information storage medium cartridge (hereinafter simply referred to as a cartridge) 1, the solid line arrow in the figure indicates the insertion direction of the cartridge 1 into the information processing apparatus (not shown), and the broken line in the figure The arrow indicates the direction of extraction.

In the figure, 2 is a cartridge body formed by overlapping two cover members 2a and 2b, and an optical disc 3 as an information storage medium is accommodated in this cartridge body 2. This optical disc 3 has an outer diameter of about 130 am, for example.

It is formed to have an inner diameter of about 15 m and a thickness of 1.2 to 3 m, and has an information forming layer on at least one side that can be recorded or reproduced using a laser beam or the like.

The cartridge main body 2 has openings on both sides for performing information processing, that is, insertion of a storage/reproduction head (not shown) and drive means (not shown) for holding and rotating the optical disc 3. Opening 4 for
．． 4 is formed, and a shielding member (
5 (hereinafter referred to as a shutter) is slidably attached.

As shown in FIG. 3, this shutter 5 has a shape similar to that of a band plate bent into a U-shape, and near the bent portion there is a protrusion 7 that constitutes a guide means 6, which will be described later.・・・
is extruded so as to protrude toward the inner surface, and engagement pieces 8, 8 are formed at the leading end of the image.

On the other hand, the cartridge main body 2 has guide grooves 9, 9 formed along the opening and closing directions of the shutter 5 on the front edges of both sides, and guide grooves 10, 9 along the opening edge of the opening 4.4.
10 is now formed. When the shutter 5 is attached to the cartridge body 2, the protrusions 7 engage with the guide grooves 9.9 to constitute the guide means 6, and the tips thereof The engaging pieces 8, 8 formed at the opening 4 are adapted to engage the guide groove 10.10, and the shutter 5 is in a close contact state that can reliably close the opening 4. 4 is attached so that it can be slid freely to open and close.

Further, as shown in FIG. 4, the cartridge main body 2 is formed with an inclined guide portion 11, which serves as a portion over which the protrusion 7 protruding from the shutter 5 is fitted. The shutter 5 can be easily attached. The shutter 5 is sometimes installed by pushing the protrusions 7 in the direction of the arrows 6 in FIG. outward along (arrow B, B direction)
It gradually spreads out and finally climbs over the highest part of the slope and fits into the guide groove 9.9.

At this time, the engaging pieces 8, 8 formed at the front end of the image of the shutter 5 engage with the guide grooves io, io, and the shutter 5 is attached in a stable and slidable manner.

Further, as shown in FIG. 5, the shutter 5 is provided with a shutter locking plate 12, a shutter closing spring fixing plate 13, and the like.

Further, the cartridge main body 2 is provided with accidental erasure prevention members 14 and 15 for side A and B to prevent the data recorded on the optical disc 3 from being erased accidentally, and the side edge of the cartridge 1 is A notch recess 16 is formed as a detection portion used for detecting the surface and the eight surfaces.

Further, as shown in FIG. 5, one end of the shutter closing spring 20 is engaged with the shirt closing spring fixing plate 13 of the shutter 5, and the shutter 5 is in a position where it closes the opening 4. The shutter 5 is always biased in the direction of movement (in the direction of arrow C), and a shutter lock mechanism 21 is provided in the direction of movement so that the shutter 5 can be fixed in a position where it closes the opening 4.4. It has become.

The shutter lock mechanism 21 is rotatable via a support shaft 22, and is always rotated counterclockwise (in the figure) by a spring 23.
The locking member 24 is biased in the direction indicated by the arrow) and has its free end interposed in the movement path of the shutter locking plate 12 of the shutter 5.

The locking member 24 has a shape having an inclined surface 24a and a locking stepped portion 24b, and when the shutter 5 is closed, the tip of the shutter locking locking plate 12 moves to the sloped surface 24a.
The locking member 24 then slides and moves on the inclined surface 24a while being displaced against the biasing force of the spring 23.

When the shutter 5 reaches a position where the openings 4 are securely closed, the tip of the shutter locking plate 12 faces the locking step 24b, and the locking member 24 is moved counterclockwise by the biasing force of the spring 23. The locking step portion 24b is displaced in the direction indicated by the arrow, and the locking step portion 24b is locked to the shutter locking locking plate 12, and the shutter 5 is locked.

Further, the release operation of the shutter lock [121] is performed by pushing down the free end side of the lock member 24 against the biasing force of the spring 23 using the lock release bar 25 of the information processing device, so as to engage the locking plate 12 for the shutter lock. Stop portion 24b
It is designed to release the engagement with the

Further, the shirt shirt closing spring 2o has a winding part 20a wound a plurality of times in the middle part as shown in FIGS. 6 and 7, and arm parts 20b and 20 at both ends.
c extends into a substantially V-shape.

Then, the winding part 20a formed in the intermediate part is formed in the cover member 2b, and a space part 3 surrounded by the parts 30 and 31 is formed.
2, and a retaining recess 34 formed in the cover member 2b, and a locking part 33 bent at the tip of the arm part 2b at one end.
The locking portion 35, which is curved at the tip of the other end portion 20c, is engaged with the shutter closing spring fixing plate 13 of the shutter 5 as described above.

The cover member 2b includes a shirt closure spring 20.
A pin 4o for easily attaching the shirt closure spring 20 is provided in a protruding position at a position where the other end arm portion 20c does not slightly touch it.

Further, as shown in FIG. 6, ribs 30.36, 30', and 36' are formed on the cover members 2b and 2C constituting the cartridge body 2 and intersect with the arm portions 20b and 20c at both ends of the shirt shirt closing spring 20. Among them, the ribs 30 and 36 formed on the cover member 2b are
The thickness of the cover member 2 is the same as the thickness of the cover member 2.
The ribs 30' and 36' formed on the cover member 2a
The thickness is lower by a dimension (d+α) that is slightly larger than the wire diameter d of the shirt closure spring 20, so that a slit 41 having a dimension (d+α) is formed.

Further, on the rear end surface of the cartridge 1, as shown in FIGS. 8 and 9, holding claws 45.4 of the autochanger are provided.
The held part 4 is an L-shaped recessed part that can be engaged with the held part 4.
6.46 is formed.

Further, as shown in FIG. 10, the notch recess 16 formed on one side edge of the cartridge body 2 is used not only for detecting the A side and the B side of the cartridge 1 as described above, but also for detecting the A side and B side of the cartridge 1 as described above. As shown in Fig. 11, the bar 47 is designed to engage with a positioning bar 47 disposed in the cartridge accommodating portion of the autochanger that automatically loads the cartridge into the information processing device, and is used for positioning within the autochanger. It has become so.

Further, a cover member 2a constituting the cartridge main body 2,
As shown in FIG. 12, a plurality of lifting prevention fitting portions 7 that can be press-fitted into each other are provided on the mutually opposing surfaces of the 2b.
0... (only one location is shown) are arranged at appropriate locations. These fitting parts 70 for preventing floating and warping
. . . are the concave boss portion 50 and the concave boss portion 5, respectively.
The double-force spring members 2a and 2b, which are composed of a convex boss portion 51 having an outer diameter slightly larger than the inner diameter of 0, and which have parts incorporated therein, are overlapped in a predetermined position in a planar direction. By applying a certain amount of pressure from the concave boss portion 5
The convex boss portion 51 is press-fitted into the inside. This prevents the two cover members 2a and 2b from floating outward even if they are affected by warping during molding. As a result, the optical disc 3 housed inside can be reliably protected without creating any gaps where dust or dirt can enter, and the bolts can be securely protected.

The two cover members 2a and 2b can be maintained in an overlapping state before the four corners are fixed with nuts, thereby improving the ease of assembly. In addition, the thickness of the cartridge 1 becomes uniform, making it possible to handle it with an autochanger reliably.
The erroneous erasure prevention members 14 and 15 that prevent erroneous erasure of recorded data can improve product accuracy without impairing the movement of the parts housed inside. As shown in FIG. 2, a detection light transmitting window 52.
53 is configured to open and close.In the closed state (the state shown in
In the state shown in Fig. 4), it is possible to combine and erase data.

As shown in FIG. 15, the accidental erasure prevention members 14 and 15 each include a main body 54 formed in a shape that allows detection light transmission windows 52 and 53 to be opened and closed, and a main body 54 that is protruded from one end of the main body 54. A first protrusion 55, a second protrusion 56 protruding from the other end of the main body 54, and a pair of elastic locking tongues 57, 57 protruding from the side of the main body 54. It is integrally molded from synthetic resin material.

When assembled into the cartridge main body 2, the main body part 54 is formed on the cover members 2a and 2b, and is located between the first and second parts 758 and 59 and protrudes from both ends. The second projections 55 and 56 are fitted into the detection light transmitting window 52 or 53, which is a long hole, and can be slid in the left and right directions in the figure.

In addition, mortar-shaped locking Q portions 60.60 are respectively protruded from the mutually opposing surfaces of the ribs 58, 59, and as shown in FIG. Claw part 5
7a, 57a are the one end portions 60a, 6 of the locking step portion 60.60.
0a, the tip claws 57a, 57a of the pair of elastic locking tongues 57.57 catch on the other ends 60b, 60b of the locking step 60.60, as shown in FIG. It is now regulated.

Further, an operating body insertion recess 61 is formed in the second protrusion 56, and a switching operation can be performed only by inserting a rod-shaped operating body 62 into this operating body insertion recess 61 and sliding it. This prevents it from being moved carelessly.

Further, the accidental erasure prevention members 14 and 15 are attached in opposite directions so that the operation body insertion recess 61 is not located on the same side of the cartridge body 2, so that the accidental erasure prevention members 14 and 15 are installed in opposite directions to each other so that the operating body insertion recess 61 is not located on the same side of the cartridge body 2. You can check if it is there.

In addition, when switching the erroneous erasure prevention members 14 and 15, the tip claw portions 57 of the pair of elastic locking tongues 57, 57 are used.
The completion state of switching can be confirmed by the sound generated when a, 57a gets over the locking step portion 60.60.

[Effects of the Invention] As explained above, the present invention provides a cartridge for an information storage medium having a cartridge body formed by overlapping two cover members and accommodating an information storage medium therein.
A fitting portion is formed on the mutually opposing surface portions of the two cover members to be press-fitted into each other to prevent the cover member from lifting up. Therefore, although the structure is simple, it is possible to reliably prevent the two cover members from lifting up from each other, and thereby the information storage medium housed inside can be reliably protected without creating any gaps through which dust or dirt may enter. In addition, the two covers can be held in an overlapping state before they are fixed with bolts and nuts, improving ease of assembly, and the thickness of the cartridge is uniform, improving product accuracy! ! This has the advantage of being able to provide a media cartridge.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of the shutter in a closed state, FIG. 2 is a perspective view of the shutter in an open state, FIG. 3 is a vertical side view of the shutter, and FIG. 4 is a perspective view of the shutter in an open state. is the second
Figure IV - Cross-sectional view along line IV, Figure 5 is Figure 1 v-■
6 is a plan view showing how the shirt closure spring is installed, FIG. 7 is a side view, FIG. 8 is a perspective view showing the rear of the cartridge, and FIG. I
10 is a schematic plan view showing a recess formed on one side of the cartridge; FIG. 11 is a schematic perspective view showing the cartridge housed in an autochanger; FIG. 12 is a sectional view taken along line X-IX; 13 and 14 are plan views showing different switching states of the erroneous erasure prevention member, and FIG. 15 is a side view of the erroneous erasure prevention member. DESCRIPTION OF SYMBOLS 1... Cartridge for information storage medium, 2... Cartridge body, 2a, 2b... Cover member, 3... Information storage medium (optical disc), 50... Concave boss portion, 5
1... Convex boss part, 70... Fitting part for preventing lifting. Applicant's agent Patent attorney Takehiko Suzue Figure 3 Figure 4 b Figure 8 Figure 9 Figure 11 Figure 12 b #! Figure 12 Figure 13 Figure 14 Figure 15

Claims (2)

[Claims] (1) In an information storage medium cartridge having a cartridge body formed by overlapping two cover members and accommodating an information storage medium therein, the two cover members are press-fitted into mutually opposing surfaces of the two cover members. A cartridge for an information storage medium, characterized in that a fitting portion is formed to prevent the cover member from lifting up. (2) The information storage medium according to claim 1, characterized in that the fitting portion is composed of a concave boss portion and a convex boss portion that are integrally protruded from the cover member. cartridge.