JPH06162723A - Cartridge and production of shutter of cartridge - Google Patents

Abstract

PURPOSE:To smooth the movement of a shutter and to prevent a sharing phenomenon by providing recessed parts in a position symmetrical to both sides of right and left outer edges in the sliding direction of the shutter. CONSTITUTION:The shutter of the case for housing a disk-shaped medium is provided with a guide 10 for sliding of a U shape in section formed by bending a guide pawl 101. The guide pawl 101 is inserted into the sliding groove formed within the case from the flank part of the case. The recessed parts 17 are formed in the position symmetrical to both sides of right and left outer edges 19 in the sliding direction of the guide 10 for sliding. Projecting parts 18 which do not project from the right and left outer edges 19 are provided within these recessed parts 17. The recessed parts 17 are positioned at the corners in the rear surface parts of the U shape. The projecting parts 18 are so provided that the cutting edges thereof do not project to both sides from the outer end edges 19. The recessed parts are formed in the position symmetrical to both sides of right and left outer edges in the sliding direction of the shutter in such a manner, thereby the safe opening and closing operations of the shutter are assured without abutting the shutter on the case at the time of the opening and closing operations of the shutter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio or video cassette or a digital compact cassette in which a disk cartridge such as a flexible disk, a hard disk, particularly an optical disk, is rotatably housed in a case, or a tape medium is housed. The present invention relates to a cartridge and a method of manufacturing a shutter in the cartridge.

[0002]

2. Description of the Related Art Generally, an information medium, for example, a disk-shaped medium such as a magnetic disk, an optical disk or a magneto-optical disk, or a tape-shaped medium is used as a cartridge housed in a case set in a recording / reproducing apparatus. The conventional media of this kind are liable to be dusty or dusty during handling and are particularly easy to be scratched.Because the influence of temperature change is great, the openings such as the head insertion hole and the drive shaft insertion hole provided in the case should be opened. It is known to include a shutter that opens and closes when a disc is used or not used.

[0003]

In the conventional cartridge, which is slidably provided with a shutter for opening and closing the opening formed in the case, when the shutter is molded from a thin metal plate, the shutter is manufactured continuously. A connecting portion was provided at the end of the shutter to cut it in the final step. However, since the cutting portion projects in a convex shape from the shutter end portion, the shutter stroke is determined by the cutting portion, or the shutter opening / closing member is brought into contact with a member of the recording / reproducing device, and is attached / detached to / from the recording / reproducing device, Since problems such as the inability to open and close the shutter smoothly occur, it is necessary to manage the cutting position with extremely high accuracy, and post-processing is also required, which complicates manufacturing and reduces production efficiency, and shutter operation There was also a problem in terms of reliability. The present invention is intended to eliminate these conventional drawbacks, the stroke range of the shutter can be easily determined, and the assemblability is significantly improved, and the tip of the shutter hits the case without scraping the case. An object of the present invention is to provide a method for manufacturing a cartridge and a shutter in a cartridge, which has good slidability, can be operated smoothly, does not cause a malfunction, improves safety, improves reliability, and is easy and inexpensive to manufacture. It is a thing.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a case in which a medium is housed and which has an opening for exposing a part of the recording surface of the medium to the outside or an opening for inserting a drive shaft or the like. A cartridge provided with a shutter that is slidably provided in the case and that opens and closes at least one of the openings, in which recesses are formed at left and right outer end edges in a sliding direction of the shutter, and the left and right outer ends are provided in the recesses. The cartridge is characterized in that it has a convex portion projecting inward from the end edge.

[0005]

When sliding on the case, the stop position can be regulated by a good end surface of the leading edge of the shutter, and further, when the shutter or the sliding guide of the shutter is fitted into the slide groove of the case and slides. The cutting edge of the tip of the shutter or the sliding guide does not come into contact with the case, the movement of the shutter becomes smooth, and the abrasion phenomenon does not occur.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to an example of a disk cartridge shown in FIGS. 1 to 5. A disk-shaped medium 2 as an information medium is housed in a case 1 and an opening 3 such as a head insertion hole is formed. A cartridge having a shutter (4) having a substantially U-shaped cross section for opening and closing the opening (3) slidably in the case (1), wherein the case (1) comprises an upper case and a lower case. The shutter 4 is provided with a sliding guide 10 having a U-shaped cross section in which the guide claw 10 ₁ is bent, and the guide claw 10 ₁ is inserted into a slide groove formed inside the case from the side surface portion of the case 1, and Recesses 17 are formed in the left and right outer end edges 19 of the sliding guide 10 in the sliding direction.
And a convex portion 18 projecting inward from the left and right outer edges 19 is formed in the concave portion 17, the concave portion 17 is located on the U-shaped rear surface, and the cutting edge of the convex portion 18 is the outer edge. It is designed so as not to project from both sides than 19.

In this case, the recess 17 formed in the shutter 4 has a pair of left and right and / or upper and lower symmetrical positions when the shutter has a substantially U-shaped cross section, and there is a drop at the bent corner. Or the recess 17 on the back only.
It is also possible to have
It is also possible to determine the sliding range with a step (not shown) fitted in the recess 17.

In the drawing, reference numeral 5 denotes a shutter area for sliding the shutter 4 having a U-shaped cross section, which is formed as a concave surface on the outer surface of the case. 6 is a clamping plate, 7 is a disc fitting hole, 8 is an erasure preventing plug, 9 is a shutter lock, 14 is a medium storage portion, 15 is a label area, and 16 is a visible portion. The case 1 is selected and configured as various cartridge-shaped shells that accommodate disk-shaped media such as floppy disks, compact disks, video disks, and optical disks, or tape-shaped media such as audio, video, and digital compact cassettes. .

The shutter 4 is a metal shutter and corresponds to a chamfered portion or a concave portion formed on the case side by rounding the outer edge so as to eliminate the edge or by dropping the corner. It is considered that the strength of the shutter is increased and the reliability is improved by the fitting.

In the embodiments of FIGS. 6 and 7, a floppy disk is used as an example, and either or both ends of the U-shaped back portion 4 ₁ of the shutter 4 having a substantially U-shaped cross section provided in the case 1 in which the disk-shaped medium 2 is housed. Has a concave portion 17 at one end thereof, and a convex portion 18 that ends inside the outermost edge 19 of the shutter upper and lower plates 4 ₂ and 4 ₂ and has a window portion 1 for opening and closing the opening 3.
3 with the shutter up and down plate 4 _2, the shutter 4 is equipped slidably to the slide area 11.

[0011] Incidentally, the recess 17 is provided across the bent both corner portions of the U-shaped back 4 _1, are help us scraping prevention.
In this case, a pair of folding curves are inserted in the recess 17 and bent in a substantially U-shape, and when a large number are continuously arranged in series, the U-shaped back portion 4 ₁ of the shutter upper and lower plates 4 ₂ is formed. Outermost edge 1
It is taken into consideration that the convex portion 18 is formed by cutting and separating at the contact and separation edge located inside the position 9.

When forming a large number of shutters 4 from a thin metal plate by press working, as shown in FIG. 8, the cut edges to be the left and right outer end edges 19 of each adjacent shutter are opposed to each other with a gap therebetween, and the outer cut edges are formed. The recess 17 is formed and the outer recesses 17, 17 are formed.
Each shutter 4 is continuously formed by a connecting portion 20 provided therebetween, and the connecting portion 20 is cut along a cutting line 21 parallel to the cutting edge.
Then, the shutter is cut at an inner position of the concave portion that does not protrude from the cut edge to separate the shutters, and the shutter is formed in a cartridge that is bent at a folding line 22 into a substantially U-shaped cross section.

In the example of FIG. 9, a cartridge of a digital compact cassette (DCC) is used, and it projects from the U-shaped back portion 4 _{1 of the} shutter 4 provided in the case 1 and the outermost edge 19 of the shutter upper and lower plates 4 _2. However, the cutting surface is prevented from protruding by the inner convex portion 18 of the concave portion 17 so that the cutting surface does not contact the case 1 when the shutter 4 is opened and closed. In the embodiment in this case, as shown in FIG.
In order to continuously manufacture the four parts, it is preferable to form a recess 17 at the end of the shutter 4 at the base of the connecting part 20 and cut at the cutting line 21.

In the example of FIG. 11, a recess 17 formed on both side edges of the shutter 4 and a step portion 23 fitted in the recess 17 are provided.
The movement in the front-rear direction can be regulated by the and. When punching, it is continuously formed by the connecting portion 20 between the recesses 17 and cut by the cutting line 21 as shown in FIG.
The folding line 22 is provided at a position apart from the recess 17 and is bent into a substantially U-shaped cross section to form a shutter. In this case, the recess 17
Is designed so that it can be fitted into the step portion 23 by forming a stepped recessed portion 17 ₁ .

[0015]

As described above, according to the present invention, since the end portion of the manufacturing connecting portion of the shutter is in the recess, it does not come into contact with the case when the shutter is opened and closed, and the shutter can be opened and closed safely without causing malfunction of the shutter. Moreover, since the case is less likely to be rubbed against the case when the shutter is opened or closed, or the case is less likely to cause shavings, so that the reliability of the shutter can be significantly increased without causing any trouble in recording and reproducing such as dropout. There is no error in the setting of the sliding range of, and it can be easily determined, and it is not necessary to manage the cutting position with high accuracy
There are practical effects such as reworking of the cut surface is not required, quality and durability are improved, and manufacturing is easy and inexpensive.

[Brief description of drawings]

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

FIG. 2 is a perspective view of the example of FIG. 1 in a separated state.

FIG. 3 is an enlarged perspective view of a part of the shutter of the example of FIG.

4 is a front view of a portion of the example of FIG.

5 is a plan view of part of the example of FIG.

FIG. 6 is a plan view of another embodiment of the present invention.

FIG. 7 is an enlarged perspective view of the shutter of the example of FIG.

FIG. 8 is an explanatory plan view of the manufacturing process of the shutter of the example of FIG.

FIG. 9 is a perspective view of another embodiment of the present invention.

FIG. 10 is an explanatory plan view of the manufacturing process of the shutter of the example of FIG.

FIG. 11 is a perspective view of still another embodiment of the present invention.

12 is an explanatory plan view of the manufacturing process of the shutter of the example of FIG.

[Explanation of symbols] 1 case 2 disk medium 3 opening 4 shutter 4 ₁ U-shaped back 4 ₂ shutter upper and lower plate 5 shutter area 10 sliding guide 10 ₁ guide claw 11 slide area 12 notch 13 window section 17 concave section 18 convex section 19 Outer edge 20 Connection 21 Cutting line 22 Folding curve

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[Procedure amendment]

[Submission date] August 10, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

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[Document name] Statement

Title: Cartridge and method of manufacturing shutter in cartridge

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio or video cassette or a digital compact cassette in which a disk cartridge such as a flexible disk, a hard disk, particularly an optical disk, is rotatably housed in a case, or a tape medium is housed. The present invention relates to a cartridge and a method of manufacturing a shutter in the cartridge.

[0002]

2. Description of the Related Art Generally, an information medium, for example, a disk-shaped medium such as a magnetic disk, an optical disk or a magneto-optical disk, or a tape-shaped medium is used as a cartridge housed in a case set in a recording / reproducing apparatus. The conventional media of this kind are liable to be dusty or dusty during handling and are particularly easy to be scratched.Because the influence of temperature change is great, the openings such as the head insertion hole and the drive shaft insertion hole provided in the case should be opened. It is known to include a shutter that opens and closes when a disc is used or not used.

[0003]

In the conventional cartridge, which is slidably provided with a shutter for opening and closing the opening formed in the case, when the shutter is molded from a thin metal plate, the shutter is manufactured continuously. A connecting portion was provided at the end of the shutter to cut it in the final step. However, since the cutting portion projects in a convex shape from the shutter end portion, the shutter stroke is determined by the cutting portion, or the shutter opening / closing member is brought into contact with a member of the recording / reproducing device, and is attached / detached to / from the recording / reproducing device, Since problems such as the inability to open and close the shutter smoothly occur, it is necessary to manage the cutting position with extremely high accuracy, and post-processing is also required, which complicates manufacturing and reduces production efficiency, and shutter operation There was also a problem in terms of reliability. The present invention is intended to eliminate these conventional drawbacks, the stroke range of the shutter can be easily determined, and the assemblability is significantly improved, and the tip of the shutter hits the case without scraping the case. An object of the present invention is to provide a method for manufacturing a cartridge and a shutter in a cartridge, which has good slidability, can be operated smoothly, does not cause a malfunction, improves safety, improves reliability, and is easy and inexpensive to manufacture. It is a thing.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a case in which a medium is housed and which has an opening for exposing a part of the recording surface of the medium to the outside or an opening for inserting a drive shaft or the like. A cartridge provided with a shutter that is slidably provided in the case and that opens and closes at least one of the openings, in which recesses are formed at symmetrical positions on both left and right outer edges in the sliding direction of the shutter. .

[0005]

When sliding on the case, the stop position can be regulated by a good end surface of the leading edge of the shutter, and further, when the shutter or the sliding guide of the shutter is fitted into the slide groove of the case and slides. The cutting edge of the tip of the shutter or the sliding guide does not come into contact with the case, the movement of the shutter becomes smooth, and the abrasion phenomenon does not occur.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to an example of a disk cartridge shown in FIGS. 1 to 5. A disk-shaped medium 2 as an information medium is housed in a case 1 and an opening 3 such as a head insertion hole is formed. A cartridge having a shutter (4) having a substantially U-shaped cross section for opening and closing the opening (3) slidably in the case (1), wherein the case (1) comprises an upper case and a lower case. the shutter 4, a U-shaped cross-section sliding guide 10 formed by bending the guide claws 10 ₁ provided, the guide claws 10 _1, Yes is inserted into the slide grooves formed in the inner case from the side portion of the casing 1, and Recesses 17 are formed at symmetrical positions on the left and right outer edges 19 of the sliding guide 10 in the sliding direction, and the left and right outer edges 1 are formed in the recesses 17.
9 is provided so that it does not project more than 9 and the recess 17 is located at the corner of the U-shaped back surface so that the cutting edge of the projecting portion 18 does not project beyond the outer edge 19 on both sides.

In this case, the recess 17 formed in the shutter 4 has a pair of left and right and / or upper and lower symmetrical positions when the shutter has a substantially U-shaped cross section, and there is a drop at the bent corner. Or the recess 17 on the back only.
It is also possible to have
It is also possible to determine the sliding range with a step (not shown) fitted in the recess 17.

In the drawing, reference numeral 5 denotes a shutter area for sliding the shutter 4 having a U-shaped cross section, which is formed as a concave surface on the outer surface of the case. 6 is a clamping plate, 7 is a disc fitting hole, 8 is an erasure preventing plug, 9 is a shutter lock, 14 is a medium storage portion, 15 is a label area, and 16 is a visible portion. The case 1 is selected and configured as various cartridge-shaped shells that accommodate disk-shaped media such as floppy disks, compact disks, video disks, and optical disks, or tape-shaped media such as audio, video, and digital compact cassettes. .

The shutter 4 is a metal shutter manufactured by press forming from a metal plate, and is formed on the case side by rounding the outer edge so as to eliminate the edge or by dropping the corner. It is considered that the strength of the shutter is increased and the reliability thereof is improved by corresponding to or fitting with the chamfered portion or the concave portion.

[0010] In the embodiment of FIGS. 6 and 7, an example of a floppy disk, both ends or either U-shaped back 4 ₁ of a U-shaped cross section shutter 4 provided on the case 1 accommodating the disc-shaped medium 2 one end of the recess 17 provided in the, those having a shutter vertical plate 4 _2, 4 ₂ of the convex portion 18 was terminated inside than the outermost edge 19, the window portion 1 for opening and closing the opening 3
3 with the shutter up and down plate 4 _2, the shutter 4 is equipped slidably to the slide area 11.

[0011] Incidentally, the recess 17 is provided across the bent both corner portions of the U-shaped back 4 _1, are help us scraping prevention.
In this case, there is that bent into a substantially U-shape to put a pair of folding lines in the recess 17, if it is a number continuously provided in series, the U-shaped back 4 ₁ shutter vertical plate 4 ₂ Outermost edge 1
It is taken into consideration that the convex portion 18 is formed by cutting and separating at the contact and separation edge located inside the position 9.

When forming a large number of shutters 4 from a thin metal plate by press working, as shown in FIG. 8, a connecting portion 20 is provided on the left and right outer edge 19 of each adjacent shutter, and the connecting step 20 is cut. The connecting portion 20 is punched out so as to form the recesses 17 at symmetrical positions on both sides of the outer edge near the connecting portion, and each shutter 4 is continuously molded by the connecting portion 20 provided between the recesses 17, and the connecting portion is formed. 20 is cut at a cutting line 21 parallel to the cutting edge at an inner position of the recess not projecting from the cutting edge to separate each shutter, and the shutter is a cartridge in which a folding curve 22 is bent into a substantially U-shaped cross section. is there.

[0013] In the example of FIG. 9, an example in which the cartridge of the digital compact cassette (DCC), protruding from the lateral outer edges 19 of the U-shaped back of the shutter 4 4 ₁ and the shutter vertical plate 4 ₂ provided in the case 1 However, the cutting surface is prevented from protruding by the inner convex portion 18 of the concave portion 17 so that the cutting surface does not contact the case 1 when the shutter 4 is opened and closed. In the embodiment of this case, as shown in FIG. 10, in order to continuously manufacture between the shutters 4 and 4 as in the previous example, a recess 17 is formed at the base of the connecting portion 20 at the end of the shutter 4, It is better to cut at the cutting line 21.

In the example of FIG. 11, the recesses 17 formed on both side edges of the shutter 4 and the step portion 2 fitted in the recesses 17 are provided.
It is possible to regulate movement in the front-back direction with 3.
At the time of punching, as shown in FIG. 12, it is continuously formed by the connecting portion 20 between the recesses 17 and cut by the cutting line 21, but the folding line 22 is provided at a position apart from the recess 17 and has a substantially U-shaped cross section. It is bent into a shape to serve as a shutter. In this case, the recess 17 is taken into consideration to be able to fit the stepped portion 23 in the two-stage recess 17 ₁ that stepped.

[0015]

As described above, according to the present invention, since the recesses are provided at symmetrical positions on the left and right outer edges in the sliding direction of the shutter, the shutter does not come into contact with the case when the shutter is opened and closed, and the shutter does not malfunction and is safe. Since it can be opened and closed, and there is little case damage such as rubbing or scraping of the case when opening and closing the shutter, and the generation of shavings, it does not hinder recording and playback such as dropouts and significantly increases reliability. The shutter sliding range can be set easily without any error, the high-precision cutting position management is not required, the re-machining of the cutting surface is not required, and the quality and durability can be improved. It has practical effects such as peeling and easy and inexpensive manufacturing.

[Brief description of drawings]

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

FIG. 2 is a perspective view of the example of FIG. 1 in a separated state.

FIG. 3 is an enlarged perspective view of a part of the shutter of the example of FIG.

4 is a front view of a portion of the example of FIG.

5 is a plan view of part of the example of FIG.

FIG. 6 is a plan view of another embodiment of the present invention.

FIG. 7 is an enlarged perspective view of the shutter of the example of FIG.

FIG. 8 is an explanatory plan view of the manufacturing process of the shutter of the example of FIG.

FIG. 9 is a perspective view of another embodiment of the present invention.

FIG. 10 is an explanatory plan view of the manufacturing process of the shutter of the example of FIG.

FIG. 11 is a perspective view of still another embodiment of the present invention.

12 is an explanatory plan view of the manufacturing process of the shutter of the example of FIG.

[Explanation of reference numerals] 1 case 2 disk-shaped medium 3 opening 4 shutter 4 ₁ U-shaped back portion 4 ₂ shutter upper and lower plates 5 shutter area 10 sliding guide 10 ₁ guide claw 11 slide area 12 notch 13 window portion 17 concave portion 18 convex portion 19 Outer edge 20 Connection part 21 Cutting line 22 Folding curve

[Procedure Amendment 2]

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[Figure 10]

[Procedure 3]

[Document name to be corrected] Drawing

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FIG. 11

[Procedure amendment 4]

[Document name to be corrected] Drawing

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[Fig. 12]

Claims (5)

[Claims] 1. A case having a medium housed therein and having an opening for exposing a part of the recording surface of the medium to the outside, or an opening for inserting a drive shaft and the like, and slidable on the case. In a cartridge provided with a shutter for opening and closing at least one of the openings, concave portions are formed at left and right outer end edges in a sliding direction of the shutter, and the concave portions are located inward of the left and right outer end edges. A cartridge having a protruding portion. 2. The cartridge according to claim 1, wherein the shutter is a shutter having a substantially U-shaped cross section, and is provided with a pair of concave portions at left and right and / or upper and lower symmetrical positions. 3. The cartridge according to claim 1, wherein the shutter determines a sliding range by the concave portion and a step portion fitted in the concave portion. 4. A case is housed inside a cartridge and is slid into a case having an opening for exposing a part of the recording surface of the medium to the outside or an opening for inserting a drive shaft or the like. When forming a large number of shutters for opening and closing at least one from a thin metal plate by press working, the cut edges that are the left and right outer end edges of the adjacent shutters face each other with a gap, and a recess is formed in the cut edges. The shutters are connected and molded by a connecting portion provided between the recesses, and the shutters are separated by a cutting line parallel to the cutting edge at an inner position of the recess that does not project the connecting portion from the cutting edge. Of manufacturing a shutter in a cartridge. 5. The method of manufacturing a shutter according to claim 4, wherein the recess is punched into a two-step recess having a step at least from the outer edge.