JPH11134833A - Disk cartridge and method for assembling the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk cartridge in which an aperture portion can be opened and closed by a shutter movable in both left and right directions and which is easy to assemble. SOLUTION: A disk cartridge is constituted by a cartridge body constituted by an upper half 19 and a lower half 20, a shutter 30 movable in both left and right directions for opening and closing an aperture portion 4 provided in each of the upper and lower halves 19 and 20, a pair of guide chips 40a and 40b which are provided on the left and right sides of the shutter 30 and in contact with guide pawls provided on the shutter 30 and which are movable in left and right directions, and an elastic member 8 suspended so that the pair of guide chips 40a and 40b haul each other. When the guide chips 40a and 40b are assembled, the guide chips 40a and 40b are abutted against an engagement wall 26 and an engagement piece 27 of an engagement portion 10 provided on the lower half 20, and the attitudes of the guide chips 40a and 40b are regulated. Thus, the shutter 30 can be smoothly assembled between the pair of guide chips 40a and 40b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge containing a disk-shaped recording medium such as an optical disk or a magnetic disk, and a head provided outside the disk cartridge performs recording or reproduction on the recording medium. In particular, the present invention relates to a disk cartridge having an opening, and particularly to a disk cartridge in which a shutter for closing the opening slides in both left and right directions.

[0002]

2. Description of the Related Art Conventionally, in a disk cartridge of this kind, a disk-shaped recording medium is rotatably accommodated in a rectangular cartridge body, and a head for recording or reproducing data on or from the recording medium is provided in the cartridge body. An opening is formed in a radial direction of the recording medium. Also,
The opening is formed continuously from the front end of the cartridge body, and is formed so that a disk motor for driving a recording medium to rotate can be inserted.

Further, between the disk cartridge main body and a shutter which is slidably mounted on the disk cartridge main body in both left and right directions and closes the opening, a central portion of the cartridge main body is arranged along the edge of the cartridge main body. Are provided with two sliding members that slide outward from both sides of the sliding member.

The two slide members abut against a stopper provided at the front edge of the cartridge body and cannot enter the center of the cartridge body.
A tension spring is interposed between the two slide members.

FIG. 9A is an exploded view centering on the slide member of such a disk cartridge. The cartridge body includes a lower half 81 and an upper half (not shown).

Reference numeral 91 denotes one slide member, which forms a hook for hooking on a hook surface 83 of a rail 82 provided near the lower front edge of the lower half 81 of the cartridge body. A claw 92 is provided. Further, a plate-shaped hooking support portion 93 for supporting the hooking of the hooking claw portion 92 is formed.

Reference numeral 99 denotes a tension spring, which is a slide member 91.
Is locked at one end by a spring suspension portion 94 provided at the end. In order to incorporate the slide member 91 into the lower half 81, first, the hook claws 92 of the slide member 91 are moved along the slide fitting portions 84 formed on the rails 82 of the lower half 81 as shown in FIG.
The upper surface 8 of the rail 82 while elastically deforming upward at
It is pushed in from the side of 5. As described with reference to FIG. 9B, at the same time, the locking support portion 93 is inserted into the groove 86 formed in the lower half 81. Finally, the slide member 91 is fitted into the rail 82.

Further, the other slide member 98 which is mirror-symmetrical to the slide member 91 is similarly fitted into the rail,
Next, the other end of the tension spring 99 is locked to the spring suspension 94 of the slide member 98.

As a result, the slide members 91 and 98 tend to approach each other by the urging force of the tension spring 99. However, the slide members 91 and 98 have rails 82.
Stop 9 engaging with the restriction groove 87 formed in
6, the slide members 91 and 98 stop at a position where the stop portion 96 contacts the stop surface 88 at the end of the regulating groove 87, so that the slide members 91 and 98 can no longer approach each other. ing. The shutter 97 is configured to be incorporated in the cartridge body while inserting the shutter 97 between the slide members 91 and 98.

[0010]

However, in the above-mentioned conventional configuration, the slide stop surface of the slide member and the stop surface of the rail are in contact with each other, and the pair of slide members are configured to pull each other. A portion where the slide stop surface and the stop surface of the rail come into contact becomes a fulcrum, and the pair of slide members are pulled by a spring and assembled in a C shape. Therefore, there is a problem that when the shutter is assembled, the slide member and the shutter interfere with each other, so that assembly cannot be performed smoothly.

The present invention solves the above-mentioned problem of the conventional disk cartridge. In a state where the slide member is incorporated in a half and is pulled together by a spring, that is, in a state where the slide member and the spring are assembled in a half. Even if there is, it is an object of the present invention to provide a disk cartridge in which the posture of the slide member is maintained in a state that does not hinder the incorporation of the shutter, and the shutter can be assembled smoothly.

[0012]

In a disk cartridge according to the present invention, a pair of guide chips connected to each other by a spring in contact with a slide member at a position where a shutter closes an opening is provided on the cartridge body so as to approach each other. A locking portion for regulating is provided, and each of the locking portions is formed on both sides of the spring.

According to the present invention, even when the slide member and the spring are assembled in half, the posture of the slide member is maintained in a state that does not hinder the incorporation of the shutter, and the shutter can be assembled smoothly.

[0014]

According to a first aspect of the present invention, there is provided a disk cartridge in which a rectangular cartridge body having a built-in recording medium is formed with an opening through which the recording medium can be accessed. A pair of guide chips is slidably attached to the cartridge body, an elastic member is interposed between the pair of guide chips, and the opening is attached to the cartridge body via the pair of guide chips and can be opened and closed. Attach the shutter,
A disk cartridge in which a shutter can be moved in both the left and right directions with respect to the opening, and a pair of guide chips are slidably attached to a guide rail portion extending in the left and right directions across the opening in the cartridge body. A locking portion that abuts on each of the guide chips at a position where the shutter closes the opening and restricts the pair of guide chips connected by the elastic member from approaching each other; The locking portion is formed on both sides of the elastic member.

According to a second aspect of the present invention, there is provided a disk cartridge.
2. The engaging part according to claim 1, wherein the engaging part is formed near the center of the guide rail part and protrudes toward the front end of the cartridge body 3 and is connected to the guide rail part and sandwiches the opening part. And a convex engaging piece provided at an end of the concave guide groove near the opening.

According to a third aspect of the present invention, there is provided a disk cartridge comprising:
The shutter according to claim 1, wherein the shutter is formed in a U-shape in which one end of a shutter piece for opening and closing the opening is connected by a connecting piece,
It has a hook-shaped guide claw hanging down from the connecting piece, and the guide claw is formed in a hook shape with a hanging piece hanging down from the connecting piece and a guide piece formed at a right angle at the tip of the hanging piece. The guide pawls are provided in at least two places in the left-right direction of the shutter, and the directions of the guide pieces are formed in the same direction.

According to a fourth aspect of the present invention, there is provided a disk cartridge comprising:
The shutter according to claim 3, wherein the shutter has a sliding piece hanging down from the connecting piece in parallel with the guide claw, and the guide rail portion has a groove-shaped rail groove in the direction of the front end of the cartridge body. The guide is inserted into the rail groove, and the guide claw is engaged with the guide rail portion to guide the shutter when moving in the left and right direction.

According to a fifth aspect of the present invention, there is provided a disk cartridge comprising:
The shutter according to claim 3 or 4, wherein the shutter has a protruding piece hanging down from the connecting piece in parallel with the guide claw, and the end face of the guide claw and the end face of the protruding piece come into contact with the guide chip, whereby the shutter is moved. It is characterized in that the posture of the guide tip when moving is regulated.

The disk cartridge according to claim 6 is
In any one of claims 3 to 5, the guide rail portion has a projection at a position where the shutter closes the opening and at a position corresponding to a hook-shaped guide claw provided on the shutter.
It is characterized in that the shutter does not come off in the direction of the front end of the cartridge body.

[0020] The disk cartridge according to claim 7 is
The guide chip according to claim 1 or 2, wherein one side of the main body and one side of the upper plate are connected by a connecting plate so that the main body and the upper plate straddle the guide rail of the cartridge main body. An opening formed between the other side of the upper portion and the other side of the upper plate is engaged with the guide rail portion.

The disk cartridge according to claim 8 is
Claim 1 is characterized in that the cartridge body is constituted by an upper half and a lower half. The method of assembling a disk cartridge according to claim 9, wherein when a pair of guide chips, an elastic member, and a shutter are assembled to the cartridge body composed of the upper half and the lower half, one side of the main body and one side of the upper plate are connected to each other by a connecting plate. Elastically deform the connecting plate of the guide chips connected by the above, the guide chips are mounted so as to straddle the guide rail formed in the lower half, an elastic member is interposed between the guide chips, and the recording medium is set. The upper half is fixed on the lower half, and the shutter is finally inserted into the cartridge body to which the lower half and the upper half are fixed so as to straddle the cartridge body, and the shutter is inserted between the guide chips and assembled. It is characterized by the following.

An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows an exploded perspective view of a disk cartridge, and FIG. 2 shows an assembled state.

A rectangular cartridge body 3 having a concave portion for rotatably accommodating a disk-shaped recording medium (hereinafter referred to as a disk) 1 is composed of an upper half 19 and a lower half 20. The lower half 20 is adhered by, for example, ultrasonic welding as shown in FIG. Reference numerals 4 denote openings formed in the upper half 19 and the lower half 20, respectively, a circular hole corresponding to the center hole 2 of the disk 1, and a rectangle formed up to the front end of the cartridge body 3 in the radial direction of the disk 1. And the holes are connected to each other. The opening 4 is provided with either a disk motor (not shown) for driving the disk 1 to rotate or a clamper (not shown) for mounting the disk 1 on the disk motor.
A head (not shown) for recording or reproducing information signals is inserted into the disk 1.

At the front end of the cartridge body 3, guide chips 40a and 40b shown in FIG. 3 are slidably mounted as shown in FIGS. Guide tip 40
An elastic member 8 made of a tension spring is interposed between the members a and 40b and is pulled together. The shutter 30 that opens and closes the opening 4 closes the opening 4 in the state shown in FIG. As shown in FIG. 3A, the shutter 30 has a pair of guide tips 4 in a state of being pulled together by the elastic member 8.
0a, 40b.

Reference numeral 5 denotes a shutter slide portion provided on the upper and lower halves 19 and 20, which is formed over the left and right sides of the opening 4 and is formed one step lower than the outer shape of the upper and lower halves 19 and 20, as shown in FIG. The shutter piece 31 of the shutter 30 attached to the cartridge body 3 as described above is slidable.

Reference numeral 6 denotes a shutter retainer provided on each of the upper and lower halves 19, 20. One end of the shutter slide portion 5 is formed on the rear end side of the cartridge body 3.
21 shown in FIGS. 2 and 5B and 5C is a lower half 20.
The outer wall is formed below the front end of the housing 1 and is provided in the left and right directions with the opening 4 interposed therebetween. Lower half 20
A guide rail portion 22 is formed in the front of the vehicle as shown in FIG. The guide rail portion 22 is formed across the opening 4 from the vicinity of the left end to the vicinity of the right end of the lower half 20. In a part of the guide rail portion 22,
As shown in FIGS. 6 and 5A, two convex portions 24 are formed at positions corresponding to the groove portions 36 provided in the shutter 30. Furthermore, the opening 4 of the guide rail portion 22
As shown in FIGS. 1 and 7, an inclined cutout 28 is formed in a part of the inside, and serves as a guide when assembling the shutter 30.

Reference numeral 23 denotes a guide groove formed in a concave shape in parallel with the guide rail portion 22 and connected to the guide rail portion 22.
They are formed in the left and right directions with the opening 4 interposed therebetween. Reference numeral 25 shown in FIGS. 5 and 6 denotes a rail groove formed on the front end side of the cartridge main body 3 over substantially the entire area of the guide rail portion 22.

The locking wall 26 and the locking piece 27 shown in FIGS.
Constitute the locking portion 10. The locking wall 26 is formed in the guide rail portion 22 within the opening 4, and a wall that abuts against the upper plate stop surface 48 provided on the guide chips 40 a and 40 b is provided on the front end side of the cartridge body 3. It is formed to protrude. The locking piece 27 is provided so as to be in contact with the opening 4 in the space of the guide groove 23 of the lower half 20, and a locking surface 46 provided on a guide chip 40 described later.
It is formed so as to protrude from the upper portion so as to abut the same.

The reference hole 11 shown in FIG. 1 is provided for realizing the alignment between a drive unit (not shown) comprising the head and the drive means for rotating the disk 1 and the cartridge main body 3. One of the reference holes 11 is formed as a long hole so as to absorb a dimensional error.

Reference numeral 12 denotes a write-protection detection hole.
It is provided as a disk cartridge of a type that can write information on the disk 1. Write protection detection hole 12
In the cartridge 3, a write-protect tab (not shown) is movably provided inside the cartridge body 3, and the position of the write-protect tab can be determined by a detector of the drive device so that information cannot be written on the disk 1.

Reference numerals 18 shown in FIGS. 5B and 5C denote outer walls formed at the front end of the upper half 19, which are formed in the left and right directions with the opening 4 interposed therebetween. 1 shown in FIG.
Reference numeral 7 denotes a connecting plate provided on the rear end side of the cartridge main body 3 with respect to the guide rail 21 so as to connect the outer wall 18 to the opening 4 of the upper half 19.

The shutter 30 is provided between one shutter piece 31a large enough to cover the opening 4 and the other shutter piece 31b provided opposite to the shutter piece 31a and the base end of the shutter pieces 31a and 31b. Are formed in a U-shape by a connecting piece 32 connecting the two. And shutter piece 3
1 has a shutter slide portion 5 and a shutter retainer 6
, So that the tip portions of the shutter pieces 31a and 31b are regulated so as not to be turned up.

A guide claw 33 is formed inside the connecting piece 32 of the shutter 30, as shown in FIGS. The guide claw 33 is formed in a hook shape by a hanging piece 34 and a guiding piece 35 formed in a direction perpendicular to the hanging piece 34. The guide claws 33 are provided near the left and right ends of the shutter 30 as shown in FIG. 4, and the directions of the guide pieces 35 are the same. Here, it is bent downward. The base 3 of the guide piece 35 has the groove 3
5, the hanging piece 34 is elastically deformed upwardly of the cartridge body 3 by abutting on the convex part 24 provided on a part of the guide rail part 22 as shown in FIG. However, the shutter 30 does not come off the cartridge body 3.

Further, the guide piece 35 is provided with a contact piece 39 extending toward the rear end of the cartridge body 3.
The end surface of the guide claw 33 comes into contact with the first contact surface 49 of the guide chips 40a and 40b as shown in FIG.

Inside the connecting piece 32 of the shutter 30, apart from the guide claw 33, a sliding piece 37 parallel to this guide claw 33 is provided.
4 and 5 and FIG. 6, the sliding piece 37 and the convex piece 38 are assembled in the rail groove 25 in the assembled state.

The shutter 3 includes the guide claw 33 and the sliding piece 37.
The guide rail 7 serves as a guide for the shutter 30. The end surface of the sliding piece 38 and the second contact surface 50 of the guide chips 40a and 40b abut. Further, an opening wall 9 which can be engaged with a shutter opening lever of the drive device is formed on the connecting piece 32 of the shutter 30 as shown in FIG.

The elastic member 8 includes a connecting plate 17 provided on the upper half 19 and a guide rail portion 2 provided on the lower half 20.
2 so as to be hard to touch from the outside of the cartridge body 3. Further, the elastic member 8 is arranged between the locking wall 26 and the locking piece 27.

As shown in FIG. 3, the guide chips 40a and 40b are mirror-symmetrical to each other and have a rectangular main body 41.
And an upper plate 43 and a connecting plate 42 connecting the upper plate 43 and the upper plate 43. One end 48 of the upper plate 43 comes into contact with the engagement wall 26 provided on a part of the guide rail 22. The sliding portion 44 hangs down from the upper plate 43 and engages with the rail groove 25 while being assembled to the cartridge body 3.

The spring suspension 45 of the elastic member 8 is
1 is provided at the center. The locking surface 46 formed by cutting the end of the main body 41 is formed with the locking piece 2 of the lower half 20.
7. Guide tip 4
The first abutment surface 49 is provided on a part of the main body 4a.
1 and the spring suspension portion 45.

Further, a second contact surface 50 is formed on a part of the upper plate 43 opposite to the first contact surface 49. The first abutment surface 49 is configured to abut on the end surface of the guide claw 33 of the shutter 30, and the second abutment surface 50 is configured to be able to abut on the projection 38 of the shutter 30.

Next, the disk 1, the upper and lower halves 19, 2
A procedure for assembling a disk cartridge including the shutter 0, the shutter 30, the guide chips 40a and 40b, and the elastic member 8 will be described.

First, at the right end of the guide rail portion 22 of the lower half 20 in FIG.
When the guide chip 40a is pressed toward the guide rail portion 22 while being applied to the side 2, the connecting plate 42 of the guide chip 40a is elastically deformed, and the dimension between the main body portion 41 and the sliding portion 44 increases, As shown in FIG. 5C, the sliding portion 44 of the guide chip 40 a slides into the rail groove 25 of the guide rail 22 of the lower half 20, and the main body 41 slides into the guide groove 23 of the lower half 20. That is, the guide chip 40a is slidably attached to the guide rail portion 22. By this engagement, the elastic deformation of the connecting plate 42 is released, and the guide chip 40 does not come off the guide rail portion 22.

The other guide chip 40b is the lower half 20
Is slidably attached to the left end of the guide rail portion 22 in the same manner as the guide chip 40a. Next, when the guide chips 40a and 40b are slid in the direction of the opening 4 of the lower half 20, as shown in FIG.
The locking surfaces 46 of the upper and lower guide surfaces 40a, 40b abut against the locking pieces 27 of the lower half 20.
The guide chips 40a, 40b are brought close to a position where the stopper chip 8 comes into contact with the locking wall 26 of the lower half 20.
Is suspended between the spring suspension portions 45 of the guide tips 40a and 40b.

Then, as shown in FIG.
0a and 40b pull each other, but the locking wall 26
The lower half 20 does not move in the direction toward the center of the lower half 20 after stopping by contacting the locking portion 10 formed by the locking pieces 27.

The tip of the convex locking piece 27 is designed to extend above the center position of the elastic member 8 so that the guide chips 40a and 40b are not inclined by the biasing force of the elastic member 8. .

Furthermore, the position of the spring suspension portion 45 of the guide chips 40a, 40b is locked by the locking wall 26 formed on the lower half 20 with the guide rails 22 engaged with the guide chips 40a, 40b. Elastic member 8 between pieces 27
As shown in FIG. 7, the guide chips 40a and 40b are brought into contact with the upper plate stop surface 48 and the locking wall 26 formed on the lower half 20, and the locking surface 4 is formed.
The contact between the locking piece 6 and the locking piece 27 restricts its posture.

Next, the disk 1 is inserted into the concave portion of the lower half 20 in which the disk can be stored, and the upper half 19 is inserted into the lower half 2.
Fix by welding etc. according to 0. Next, the shutter piece 3
Open the space between 1, 31
The shutter 30 is inserted in the direction of the rear end of the cartridge body 3 so as to cover the opening 4 while straddling 9 and 20. Then, the guide claw 33 of the shutter 30 is inserted between the pair of guide chips 40a and 40b.

That is, the end surface of the guide claw 33 enters the space between the end surface of the guide claw 33 and the first contact surface 49 of the pair of guide chips 40a and 40b. At this time, the corner of the first contact surface 49 is chamfered so that the end surface of the guide claw 33 can easily enter. The guide claw 33 enters along the cutout 28 formed in the guide rail portion 22.

That is, the connecting piece 32 of the shutter 30 is elastically deformed by the contact between the tip of the guide piece 35 provided in a hook shape and the notch 28, and the guide piece 35 of the shutter 30 The straddling, the tip enters the guide groove 23 of the lower half 20.

Then, as shown in FIG. 5A, the guide piece 35 of the shutter 30 enters the guide groove 23 of the lower half 20, and the guide claw 33 is The elastic deformation of the connecting piece 32 is released, and the shutter 30 does not come off from the cartridge body 3.

At the same time, the sliding piece 37 of the shutter 30 enters the rail groove 25, and the convex piece 38 of the shutter 30 comes into contact with the second contact surface 50 of the guide chips 40a, 40b.

The shape of the second contact surface 50 of the guide chips 40a, 40b is chamfered at the corner 50a so that the convex 38 of the shutter 30 can easily enter. Then, when the shutter 30 moves left and right, FIG.
As shown in FIG. 7, the guide claw 33 of the shutter 30 contacts the first contact surfaces 49 of the guide chips 40a and 40b beyond the elastic member 8, and the protruding piece 38 of the shutter 30 contacts the second contact of the guide chip 40. By contacting the contact surface 50, the posture of the guide chips 40a, 40b is regulated, and a smooth operation can be obtained.

Further, as shown in FIG. 5 (b), the shutter 30 moves left and right while being loosely fitted on the guide rail portion 22. Furthermore, at the same time when the guide piece 35 enters the guide groove 23, the end of the shutter piece 31 enters between the shutter retainer 6 and the shutter slide portion 5, and the assembly of the shutter 30 is completed.

In the course of the guide piece 35 entering the guide groove 23, the guide piece 35 goes over the convex portion 24 provided on a part of the guide rail portion 22, and
The groove 36 formed in a part of the guide piece 35 is assembled at a corresponding position. When a force is applied from the outside in a direction in which the shutter 30 comes off, the groove 36 is locked by the convex portion 24, and the shutter 30 is moved to the cartridge body 3.
Never get out of the way.

Next, the operation of the disk cartridge will be described with reference to FIG.
This will be described in detail with reference to (a) and (b). (A) of FIG.
In the state, the shutter 30 is held between the pair of guide chips 40a and 40b in a state where the shutter 30 is pulled by the elastic member 8 to each other. Here, the guide chips 40a, 4
0b, the upper plate stop surface 48 and the guide wall 26 abut,
Further, the posture is regulated in a state where the locking surface 46 and the locking piece 27 are in contact with each other.

Next, when one open wall 9 formed on the shutter 30 is pressed by a shutter release lever or the like of a drive device (not shown), one guide claw 3 of the shutter 30 is pressed.
8B, the corresponding guide chip 4 in FIG.
0a acts on the first contact surface 49. Further, the convex piece 38 of the shutter 30 is connected to the second contact surface 5 of the guide chip 40a.
Acts on zero. That is, the guide chip 40a can move along the guide rail portion 22 with the posture maintained.

The one guide chip 40a and the shutter 30 move in one of the left and right directions (here, the right direction) against the elastic member 8. At this time, the other guide chip 40b is locked by the locking portion 10 of the cartridge body 3, and maintains the initial posture.

The opening 4 is opened in this way, and a disk motor or a head (not shown) is inserted.
Recording or reproduction of information is performed. Also, the shutter 30
Is moved in the direction to close the opening 4, the first contact surface 4 of the guide tip 40 a is urged by the elastic member 8.
9 presses the end surface of the guide claw 33 of the shutter 30, and at the same time, the shutter 30 moves while the second contact surface 50 presses the convex piece 38 of the shutter 30. Then, the guide chip 40 is locked by the locking portion 10, and the shutter 30 returns to the initial state. The operation of moving the shutter 30 in the direction opposite to the above and opening or closing the opening 4 is the same as the above-described operation, and a description thereof will be omitted.

As described above, the guide tips 40a, 40b
In the assembled state, the locking wall 26 formed on a part of the guide rail portion 22 abuts on the upper plate stop surface 48 of the guide chip 40, and furthermore, the engagement formed in the space of the guide groove 23. The contact of the stop piece 27 and the locking surface 46 of the guide chip 40 restricts the posture of the guide chip 40. Further, the elastic member 8 is fixed to the locking wall 26 and the locking piece 27.
The position of the pair of guide tips 40 is regulated without being changed by the pulling force of the elastic member 8. Thereby, when assembling the shutter 30,
The guide chips 40a and 40b do not interfere with the shutter 30, and the shutter 30 can be assembled smoothly.

Further, when the shutter 30 is
When moving in the left and right directions while acting on the a and 40b, the end face of the guide claw 33 of the shutter 30 and the guide chip 40
a and 40b are in contact with one of the first contact surfaces 49, and further, the convex piece 38 of the shutter and the guide chips 40a and 40b are provided.
Since one of the second contact surfaces 50b contacts the second contact surface 50, even if the guide chips 40a and 40b are pulled toward the center of the cartridge body 3 by the elastic member 8,
The guide chips 40a, 40b can maintain their posture, and can obtain a smooth operation.

The shutter 30 is connected to the guide rail 22
By inserting the sliding piece 37 into the rail groove 25 formed in the shutter 30 and loosely fitting the guide claw 33 of the shutter 30 so as to embrace the guide rail portion, the shutter 30 does not come off from the cartridge body 3 and is stable. You can get the action.

When assembling the guide chips 40a and 40b, the connecting plate 42 of the guide chips 40a and 40b is elastically deformed and assembled to the guide rail 22 so that the guide rail 2 is used to assemble the guide chip.
It is not necessary to cut out a part of 2, and it is possible to eliminate problems such as catching when the guide claw 33 of the shutter 30 and the guide chips 40 a and 40 b move.

The hook-shaped guide pieces 35 provided on the guide claws 33 are oriented in the same direction, so that they extend in the left and right directions of the guide groove 23 into which the guide pieces 35 enter or the opening 4. The shape of the guide rail 22 can be made the same, and the guide rail 22 can be formed integrally with the outer wall 21 of the lower half 20. Further, when the movement dimension of the shutter 30 that opens the opening 4 is large, one of the guide pieces 35 moves to the outermost position away from the opening 4, and the other guide piece 35 passes through the opening 4, and the guide groove 23. Invading. At this time, if the directions of the guide pieces 35 are the same, the shapes of the guide groove 23 and the guide rail portion 22 can be simplified, and the shape of the mold for forming the lower half 20 can be simplified. it can.

A projection 24 is provided on the guide rail 22, and a groove 36 is formed on the guide piece 35 at a position corresponding to the projection 24.
Is provided, even if a force acts in the direction of removing the shutter 30 from the outside, the projection 24 and the groove 36 come into contact with each other, and the projection 24 locks the guide claw 33.
However, it is possible to provide a highly reliable disk cartridge that does not come off in an unexpected situation.

In the method of assembling the disk cartridge, a pair of guide chips 40 is assembled into the guide rail portion 22 of the lower half 20, and then the elastic member 8 is attached to the spring suspension portion 45 of the guide chip 40, not shown. Attach a write-protect tab or the like, and insert the disc 1 into a predetermined position. Next, the upper half 19 is put on the lower half 20 and the upper and lower halves 19 and 20 are fixed by ultrasonic welding or the like. Finally, the shutter 30 is inserted between the pair of guide chips 40 while straddling the upper and lower halves 19 and 20. As described above, in assembling the disk cartridge, the components are sequentially assembled on the lower half 20 and the disk is inserted, so that the assembling method can be simplified.

The type of the disk 1 may be any type, such as an optical disk, a magneto-optical disk, or a magnetic disk, as long as the gist of the present invention is not impaired. In this case, the disk 1 is provided with the write-protection hole 12 as the rewritable disk 1. However, the present invention is not limited to the rewritable disk, and may be a read-only disk such as a CD-ROM disk. The write inhibit hole 12 is unnecessary.

Although the elastic member 8 is a tension coil spring here, the elastic member 8 is not limited to the tension coil spring, and may be, for example, a rubber material.

[0068]

As described above, according to the present invention, the position of the guide chip is regulated by the locking portion formed on the cartridge body, and the elastic member is suspended so that the pair of guide chips are pulled toward each other. When the shutter is inserted between the locking wall and the locking piece, the shutter can be inserted between the pair of guide chips, and the shutter can be assembled smoothly without interference between the shutter and the guide chip. Thus, a disk cartridge having high reliability and excellent mass productivity can be realized.

In assembling the disk cartridge, a guide chip, an elastic member, and a disk are inserted into one half, then the other half is fixed by ultrasonic welding or the like, and finally, the shutter is inserted into the cartridge body. I do. In other words, since the components are sequentially assembled on one half and the disk is inserted, the assembly method is simple and a disk cartridge excellent in mass productivity can be realized.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a disk cartridge according to an embodiment of the present invention.

FIG. 2 is an external perspective view showing an assembled state of the disk cartridge of the embodiment.

FIG. 3 is an enlarged perspective view showing a pair of guide chips according to the embodiment;

FIG. 4 is a partial perspective view illustrating a configuration of a guide portion of the shutter according to the embodiment.

FIG. 5 is a cross-sectional view showing the relationship between the vicinity of the center of the guide rail and the guide of the shutter when the shutter according to the embodiment is assembled to the cartridge main body, and the guide and the upper and lower halves when the shutter moves. And a cross-sectional view showing a state where the guide chip and the upper and lower halves are assembled.

FIG. 6 is a partial perspective view illustrating a guide claw and a protrusion provided on a guide rail portion of the shutter according to the embodiment.

FIG. 7 is a partial perspective view showing a state where the guide chip of the embodiment is assembled in a lower half.

FIG. 8 is an explanatory diagram showing an initial state in relation to a shutter and a guide chip of the embodiment, and an operation explanatory diagram showing a state in which the shutter moves.

FIG. 9 is an exploded perspective view centering on a slide member of a conventional disk cartridge and a cross-sectional view of main parts.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc 4 Opening 7 Guide part 8 Elastic member 10 Locking part 19 Upper half 20 Lower half 22 Guide rail part 24 Convex part 25 Rail groove 26 Locking wall 27 Locking piece 30 Shutter 33 Guide claw 36 Groove 37 Sliding piece 40a, 40b Guide chip 46 Locking surface

Claims (9)

[Claims] An opening (4) for accessing said recording medium is formed in a rectangular cartridge body (3) containing a recording medium (1). A pair of guide tips (40a, 40b) are attached to the cartridge body (3) so as to be slidable toward the cartridge body, and an elastic member (8) is interposed between the pair of guide tips (40a, 40b). A shutter (30) attached to the cartridge body (3) via the chips (40a, 40b) and capable of opening and closing the opening (4) is attached, and a shutter (30) is attached to the opening (4). A disk cartridge movable in both left and right directions, wherein a pair of guide chips (4) is provided on a guide rail (22) extending in the left and right directions across the opening in the cartridge body (3). 0a, 40b) are slidably mounted on the cartridge body (3), and the shutter comes into contact with each of the guide chips (40a, 40b) at a position where the shutter closes the opening by the elastic member (8). The connected pair of guide tips (40a,
40b) A disk cartridge provided with locking portions (10) for restricting approach to each other, wherein each of the locking portions is formed on both sides of the elastic member (8). 2. An engaging wall (2) provided near the center of the guide rail (22) in the direction of the front end of the cartridge body (3).
6) and a convex engaging piece (27) connected to the guide rail portion (22) and provided at an end near the opening of the concave guide groove formed across the opening. 2. The disk cartridge according to claim 1, wherein the disk cartridge is configured. 3. A connecting piece (32) for connecting one end of shutter pieces (31, 31) for opening and closing the opening (4).
A hook-shaped guide claw (33) hanging from the connection piece (32), the guide claw (33) being drooping from the connection piece (32). A piece (34); a guide piece (35) formed at a right angle at the tip of the hanging piece.
2. The disk cartridge according to claim 1, wherein said guide pawls (33) are provided in at least two places in the left-right direction of said shutter, and said guide pieces are formed in the same direction. 4. The shutter (30) has a sliding piece (37) hanging down from the connecting piece (32) in parallel with the guide claw (33), and the guide rail portion (22) is provided on the cartridge body (3). A groove-shaped rail groove (25) is provided in the direction of the front end, and the sliding piece (37) is inserted into the rail groove (25), and the guide claw (33) is inserted into the guide rail portion (22). 4. The disk cartridge according to claim 3, wherein said disk cartridge is engaged to guide said shutter when said shutter moves in the left-right direction. 5. The shutter (30) has a convex piece (38) hanging down from the connecting piece (32) in parallel with the guide claw (33),
4. The posture of the guide tip when the shutter moves by regulating the end face of the guide claw (33) and the end face of the convex piece (38) into contact with the guide tip (40a, 40b). The disk cartridge according to claim 4. 6. A shutter (3) including a guide rail (22).
0) has a projection (24) at a position corresponding to a hook-shaped guide claw (33) provided on a shutter at a position where the opening (4) is closed, and the shutter is located at a front end of the cartridge body. The disk cartridge according to any one of claims 3 to 5, wherein the disk cartridge does not come off in the direction. 7. A guide chip (40a, 40b) includes a main body (41) and an upper plate (43), which extend over a guide rail (22) of a cartridge body (3). Side and one side of the upper plate (43) are connected to the connecting plate (4).
An opening formed between the other side of the main body portion (41) and the other side of the upper plate (43) is engaged with the guide rail portion.
Or the disk cartridge according to claim 2. 8. The cartridge body (3) is connected to the upper half (1).
2. A disk cartridge according to claim 1, wherein said disk cartridge comprises a lower half and a lower half. 9. A pair of guide tips (4) is provided on a cartridge body (3) comprising an upper half (19) and a lower half (20).
0a, 40b), the elastic member (8) and the shutter (30), a guide chip (40a) in which one side of the main body (41) and one side of the upper plate (43) are connected by a connecting plate (42). , 40b) are elastically deformed, and the guide chips (40a, 40b) are attached so as to straddle the guide rail portion (22) formed in the lower half (20), and the guide chips (40a, 40b) are attached. Elastic member (8) during 40b)
The upper half (30) is fixed on the lower half (20) on which the recording medium is set, and finally the cartridge body (3) to which the lower half (20) and the upper half (30) are fixed is attached. A method for assembling a disc cartridge, wherein a shutter (30) is inserted so as to straddle the cartridge body (3) and the shutter is inserted between the guide chips (40a, 40b) to assemble.