JPH01232588A - Disk cartridge - Google Patents

Abstract

PURPOSE:To surely and smoothly lock a shutter for a long period by forming a locking member for the opening/closing shutter of an aperture part so as to be canceled with its elastic deformation, and fitting the member so as to move in the sliding direction of the shutter. CONSTITUTION:The locking mechanism of biparting shutters 6 and 7 to close aperture pats 4 and 5 of a cartridge main body 1 consists of one lever shaped locking member 31, and the member 31 can move with respect to the main body 1. When the main body 1 is fitted in a recording/reproducing device, since operating pin pressured parts 33a and 33b are pressured, the locking member 31 is elastically displaced in an elastic displacing part 34, the lock of the shutters 6 and 7 is canceled, and slided in a releasing direction. In such a condition, by the elastic restoration of the elastic displacing part 34, the aperture parts 4 and 5 are completely opened. By the ejecting operation of the recording/ reproducing device, the shutters 6 and 7 are slided, the displacing part 34 is gradually flexed, and the aperture parts 4 and 5 are closed. Consequently, the displacing part 34 is not damaged even when the wall of the part 34 is made thinner, and the restoring force of the shutter 6 and 7 can be decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk cartridge rotatably housing a disk-shaped recording medium such as an optical disk capable of write-once recording.

[Summary of the invention]

The present invention provides a locking member that locks when a shutter for opening and closing an opening formed in a cartridge body that exposes a part of a disk-shaped recording medium to the outside is in a closed position, in a sliding direction of the shutter. By attaching the lock B material to the cartridge body so that it can be moved by 1 iJ, the installation space for the lock B material to the cartridge body can be reduced, and no tensile force is applied to the opening/clip member, which prevents Ft2ti and increases the length of the product. This ensures that the shutter is pressed 1:1 over a period of time.

Conventionally, disk-shaped recording media (hereinafter referred to as F disks) such as optical disks that are capable of additional recording have been subject to contamination due to adhesion of dust, etc. when not being used and not installed in a recording and/or recording device. It is housed in a predetermined cartridge to prevent writing and reading errors of the 1# signal caused by damage caused by contact with objects.

In order to record and/or play back the disc while it is stored in this cartridge, the stored disc is bent from near the outer edge to the center so that it faces outward at a predetermined recess in the radial direction. An opening is provided so that the disc turntable and chaffing member for rotationally driving the disc face the center, and the pink-up faces the signal recording section.

The cartridge is provided with a sliding shutter for opening and closing the opening, and a type of cartridge is known in which the shutter is locked when in a closed position covering the opening.

As a locking means for locking the shutter that closes the opening of the cartridge in the closed position, for example, there is a locking means disclosed in Japanese Utility Model Publication No. 61-38149, and the locking lever constituting this locking means forms the cartridge. The proximal end is integrally molded with one half made of synthetic resin, and the distal end is separated from the half so that it can be moved freely, and a locking claw is bent upward at the distal end to secure the shack. When the opening is closed, the shutter is held in the closed state by being locked into the engagement recess formed in the shutter, and when the shutter is opened, the lock lever is pressed by a protrusion provided on the holder and is elastic. The shaft is configured to be released from the shaft when the shaft is moved.

Further, the locking member as the locking means of the shutter disclosed in Japanese Utility Model Application Publication No. 62-83272 is molded from synthetic resin, and a pair of locking members are fixed with pins on the inner surface of one half forming the cartridge. The attachment is made from a base, an elastic displacement part curved into a semicircular shape from one side of the base, and an unlocking bottle pressed part having a lock recess formed by further extending this displacement part. When the shutter is in the closed position, the locked piece formed on the shutter is engaged with the lock recess, and the shutter is held in the closed position.

The locking member is bent at the elastic displacement part when the pressed part is pressed by the lock release pin, and the lock recess is disengaged from the locked piece of the shutter, and the shutter is unlocked. This will open up the opening.

In addition, this locking member has a locking piece protruding from the lower surface of the pressed part so as to be engaged with a retaining part formed on the cartridge half, so that the pressed part does not move excessively toward the free end. It regulates elastic displacement.

Further, as disclosed in Japanese Patent Laid-Open No. 58-212665, for example, when the size of the opening is larger than that of the cartridge, a pair of left and right shutters are used to close the opening of the cartridge. Some are designed to be opened on both sides.

[Problem to be solved by the invention]

Utility Model Publication No. 61-38149 mentioned above is used as a locking member for locking in a closed state the shutter that closes the opening that exposes a part of the storage disk in the disk cartridge 4J when not in use. The one disclosed in the publication is molded from synthetic resin, and the proximal end is fixed to the inner surface of the cartridge, and a bullet destination deformation portion is formed between the distal end portion that becomes the locking portion, but this bullet destination deformation portion Since it is desired that the return force of the shutter, that is, the biasing force in the closing direction, be as light as possible, it is necessary to reduce the elastic force.
For this reason, the elastically deformable portion of the lock member is formed thin.

However, even when the shutter is locked with the opening Ql closed (locked by No. 41 material), a force in the opening direction is often applied, such as when the shutter is opened suddenly and unnecessarily, and as a result, tensile force acts on the locking member. , By repeating this, there is a risk that the thin elastic deformation portion of the L-shaped portion may be damaged.

This is true even in a device configured to restrict excessive displacement of the lock portion toward the free end, such as the one disclosed in Japanese Utility Model Application Publication No. 62-83272. A predetermined interval is required between the joint and the joint part for the resilient displacement of the normal lock release operation, and within this interval, one cock member will be stretched, and there is a risk that it will be damaged due to the elongation. There is.

In addition, in these conventional locking members, in order to reduce the rebound force, the bullet destination deformation part should not be made very thin (or the length should be increased, but in this case, A large space is required to install the locking member, and especially in the case of a small cartridge with a double-opening shutter like the conventional example mentioned in MiJ, two locking members are required, making it unusable in terms of space. Become.

The present invention has been made in view of the problems of the prior art, and its purpose is to reliably lock the shutter that closes the opening of the cartridge, and also to make the return movement of the shutter light and smooth. To provide a disk cartridge equipped with an IIS material that can be used for a wide range of applications and that requires less installation space.

[Means to solve the problem]

In order to achieve the above object, the disk cartridge of the present invention includes a cartridge body formed with an opening that allows the signal recording section of the disk-shaped recording medium to be accommodated to face outward, and a disk cartridge that is slidably attached to the cartridge body. a shutter that opens and closes the opening; and a locking member disposed to lock the shutter in a position that closes the opening and release the lock by elastically deforming, the locking member locking the shutter. It is attached to the cartridge body so as to be movable in the sliding direction of the cartridge.

(Function) The shutter of the disk cartridge of the present invention configured as described above is locked by the locking member in the closed position of the opening, and when pressed in the opening direction in this locked state, the locking member is also moved. Therefore, no tensile force is applied to this locking member, and therefore, there is no risk of breakage 11 even if the elastically deformable portion is formed thin.

In addition, since the locking member can have a thin elastic deformation portion, the elastic force can be kept small.
It becomes possible to reduce the amount of returning force of the shutter, and the return operation of the shutter, that is, the closing operation can be performed smoothly.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 5.

As shown in FIGS. 2 to 4, the disk cartridge according to the present invention has an upper half (2) and a lower half (3) which are formed by molding a synthetic resin and are substantially flat and rectangular. The cartridge body (11 is constituted by rotatably housing a disk-shaped recording medium (hereinafter referred to as a disk) D such as an optical disk capable of additional recording by μJ), which is formed by butting and fixing the cartridges against each other. The chucking part d provided at the center of the storage disc D is made to face outward from the center of the upper halves (21, (31) to the front edge of the upper half (21, (31) of The opening f41. (51 is formed in a substantially rectangular shape, and the opening f41. ) is attached with a sliding shutter that opens and closes the disk.In this example, since the disk D has a small diameter, for example, 8CI11, the opening where the information signal writing/reading means faces is smaller than the size of the cartridge body +1). +41. (Since the width dimension of 51 is large, the shutter is divided into two halves υJ on the left and right, and a pair of left and right shutters (61, (7)) are used so that they can be opened on both sides.
The shutter 61 (7) is formed by bending a metal plate such as a stainless steel plate into a mouth shape. These shutters 16), +7> are fitted on the outer surface side of the cartridge main body tll, and the upper and lower halves (21, (3)
1, the opening (4) is moved from the left and right halves of the opening (f5) to the flat parts on both sides.

The inner surfaces of the upper and lower halves (21, +31 have a circular recess f8 with a circumference slightly larger than the outer diameter of the disk D), (
9) are formed, and these dual-purpose recesses (8) and (91
are opposed to each other to constitute the disk storage part (lO), and the arc-shaped ribs (11), (11), (12) of high height butt against each other along the front half circumference of the dual-use recesses (81, (9))
12) is provided protrudingly to constitute the front wall surface of the cartridge body (11), and the front side of this front wall surface is a space portion (12) that opens forward.
3).

In addition, at the rear of the upper half (2) there is a cartridge body + 1
) is attached to the lid (14) that constitutes the rear upper surface and the rear wall surface of the disc storage section (10).By opening this fi (14), the disc storage section (10) is opened rearward.

The lid (14) of this example is hinged to the upper half (2) at both sides through hinge parts (I5) formed by engagement of protrusions and recesses to the rear parts of both side walls of the upper half (2), and An engagement recess (16) is provided on the lower inner surface of the rear surface, and an engagement protrusion (17) protrudes from the rear end edge of the flat surface of the lower half (3). 17), the lid (14) is closed.

the front surface of the shutters +61 and +71, that is, the opening 14).

〈Occluded surfaces (6a) and (6b) that close the 5th hole, (
Connecting surface (6c) connecting 7a) and (7b), (
7c) has a locked piece (18) located approximately at the center in the width direction.
, (19) is provided protrudingly in the shape of a notch on the inner surface side, and is located on the outer side and approximately in the center in the height direction.
), (21) are cut and raised on the inner surface.

These locked pieces (18), (19) and secured pieces (
20), (213 is the cartridge body +
It is inserted into the front space (13) of the shutter (61, (7)) and the closing surface (6a) on the upper half (2) side of the shutter (61, (7)
, (7a) to the connecting surface (6c).

Operation pin insertion and engagement holes (24) and (25) into which the 11 release and release operation pins (hereinafter referred to as operation pins) (22) and (23) are inserted and engaged through (7c).
is formed in the shape of a notch, and the closed surface on the lower half (3) side (
6b).

There is a guided piece (26) on the inner and outer edges of the front end side of (7b).

(27) is formed inwardly in the shape of a ridge and is engaged with a guide groove (28) formed linearly in the transverse direction at the end of the surface of the lower half (3).

See you again? Closed surfaces (6a) and (6b) of 7ri (61, (7)).

The rear end portions of (7a) and (7b) are connected to the guided portion (6a1) and (
6b1), (7az) and (7bt) are formed inward in a stepped manner, and an opening (4) is formed in the plane part of the upper half +2+, (31).

(5) (guide sling formed laterally located on the t& end side) (29) and (30) are inserted.

In the center of the front space (13) of the cartridge body (11) there are shutters (6) and (7) that are connected to the opening (4).
, 15) is in the closed position, the locked piece (1
B), (19) are engaged and the shutter (6),
A locking member (31) for locking (7) is provided.

This locking member (31) is molded into a lever shape from synthetic resin, and has shafts (6) on the front side of both ends.

Locking portions (32a) and (32b) are formed with which the locked pieces (1B) and (19) of (7) engage in the outward direction, and the inner locking portions (32a) and (32
b) An operating pin pressed portion (33a) with an external portion inclined low toward the terminal end on the outside.

(33b) is formed, and the middle part is formed thinly and serves as an elastic displacement part (34).

This locking member (31) has an elastic displacement part (34) in the middle part.
The cartridge body (11) is mounted so as to be movable laterally by a support part (35) provided in the center of the front space (13) of the cartridge body (11).
2) a presser piece (36) protruding from the inner surface of the central part of the front end and a protrusion (37) protruding from the center of the outer surface of the arcuate rib (11).
), and the locking member (31) is attached by inserting an elastic displacement part (34) between the holding piece (36) and the protrusion (37), and the locking member (31) is attached by inserting the elastic displacement part (34) between the protrusion (37) and the protrusion (37) as a fulcrum. Both end sides, print locking part (32a), (32
b) The side is elastically displaced.

Also, lock members (3) are provided on both sides of this support portion (35).
1), that is, the operation pin pressed portion (33a).

The locking surface portions (3B) and (39) facing the tip of the locking member (33b) at a required distance are protruding from the inner surface of the upper half (2) to prevent excessive movement of the locking member (31). It is regulated to do so. Further, cutout recesses (40) and (41) are formed on the front surface of the upper half (2), located inside the locking surfaces (3B) and (39).

And the forward space part (13) of the cartridge body (1)
In the space portions (13a) and (13b) on both sides, torsion springs (42) are wound in the same direction.
(43) are fitted to form the cartridge body (1), that is, the upper half (21, (31), both side walls and the shutter (
The shutter (6) is interposed between the secured pieces (20) and (21) of 61 and (71).

(7) is always biased in the direction of closing the openings (41, (51).This torsion spring (42)
.

(43) has both ends (42a) and (42b), (
The terminals of 43a) and (43b) are the coil part (42c)
, (43c) are bent in parallel to form a retaining part, while the shutter +61. The engaged piece of fil (2
0) and (21) are formed approximately at the center in the height direction of the connecting surfaces (6c) and (7c) of the shutters (61, (71), so they are the same torsion springs wound in the same direction. (42).

(43) can be used without any hindrance.

This simplifies the assembly of torsion springs (42) and (43) during cartridge manufacturing, and the torsion springs (42) and (43)
Since there is no need to sort the materials themselves, storage becomes convenient.

Also, the above! (14) is attached with an additional recording prevention piece (44).

Next, to explain the operation of using the disc cartridge configured as above, first, the disc D is rotated and opened using the rear part 1 (14) of the power cartridge body (1) as a fulcrum about the hinge part (15). And upper and lower halves (2).

After storing the disc in the disc storage part (10) consisting of the four circular parts (81, +91) of (3), close the lid (14) and insert the engaging recess (16) into the retaining protrusion (3) of the lower half (3). Locks by engaging with 17).-Manryo shaft (6)
, (71 is a torsion spring (42),
The biasing force of (43) biases the opening (41, (51) in the direction, and this opening (41, +5) is half closed by the closing surfaces (6a) and (7a), (6b) and (7b). , both shafts (6) in this state.

(7) is the locking part (32a) of the locking member (31),
(32b) has a locked piece (1B), <19)
are engaged and locked, and the disk D is housed and held in a sealed state within the cartridge body fll.

When a disc cartridge housing and holding a disc D is inserted into a recording and/or reproducing device, an operating pin (22) is provided inside the device.

(23) is the operation pin insertion security tag (24), (25
) to the front side of the space (13) of the cartridge body (11).
) to be inserted through the locking member (31)
Operation pin break pressing part (33a), (33b)
is pressed inward.

In this way, the lock member (31) is connected to the operating pin pressed portion (3
When 3a) and (33b) are pressed, they are elastically displaced in the elastic displacement part (34), and the locking part (32a>
.

(32b) is the locked piece (18) of the shaft (61, (7)
).

(19), and the shutters (6) and (71) are unlocked.

In this state, the operation pins (22) and (23) are inserted into the operation pin insertion and engagement holes (24) of the shutter (6) and +71.
, (25) linearly move in opposite directions to connect the shutters t61 and (71) to the torsion spring (42).

(43) to slide in the opening direction of both doors against the biasing force. In this state, the locking member (31) has the operating pins (22) and (23) sliding on the operating pin pressed parts (33a) and (33b), and when the operating pins (22) and (23) are separated from this end, the elasticity of the locking member (31) The displacement part (34) comes into contact with the edge of the elastic return yatta (61, (71), and the shaft (
61, (7) is the cartridge body (11 opening $41
, When (5) is fully opened, the locked piece (
1B), <19) is the operation pin suppressed part (33a
), (33b) and the locking member (31) is returned to its original position.

In this way, the cartridge body (11 opening <iu
.

Shafter f61 with (5) in the open state, (7
The closing operation No. 1 is performed by the reverse operation of the opening operation described above.

That is, the operation pins (22) and (23) are moved back by the eject operation of the recording and/or playback device, and the shutters (61, +71) are thereby moved together with the biasing force of the torsion springs (42) and (43). The sliding of the shutters +61 and +71 causes the locked pieces (1B) and (19) to press the operation pin pressed parts (33a) and (33a) of the locking member (31).
33b) to gradually bend the elastic displacement part (34), and then the operating pins (22) and (23) move to the operating bottle pressed part (33a).

(33b) and locking member (31)
Shutter (6) while deflecting even more, +71
is slid in the closing direction and stopped in the abutting state to connect the opening (41, (51) with the closing surface (6a) <7a), (
6b) and (7b).

In this state, the shutter (61, (71) locked piece (18)
.

(19) is a locking portion (32a) of the locking member (31).

(32b). Therefore, by taking out the cartridge from the above-mentioned device, the JO operating pin (22) (
23) is the front side of the space (13) of the cartridge body (1) and the shutter +61. (The operation pin pressed part (33a) of the locking member (31) is removed from the operation pin Kodai engaging tag (24), (25) of 71)
, (33b) is released, and as a result, the elastic displacement part (34) elastically returns to the locking part (32a),
(32b) is locked by the locked pieces (18) and (19) of the shutters 161 and +71, and the shutter (61
, +71 are locked in the closed state.

In this way, the shutter (6) or (7) in the closed and locked state is moved by the torsion spring (42) or (43).
When the locking piece (18) or (19) accidentally slides in the opening direction against the biasing force of As a result, the locking member (31) is moved in the sliding direction of the shutter (6) or (7), but the locking member (31) is moved in the sliding direction of the shutter (6) or (7).
The upper half (2) of 1 has locking surfaces (38) and (39) spaced apart from both ends of the locking member (31) by a required distance.
Since the locking member (31) is moved along with the shaft (6) or (7), the locking surface portion (3) is provided in a protruding manner.
8) or (39), the corresponding terminal collides with it, preventing movement and keeping the shutter (6) or (7) in a locked state.

In this example configured as described above, the locking mechanism of the double-opening lever 9 (61, +71) that closes the openings (41, (51) of the cartridge body (11) is a locking member of l (hard lever -1 size). (31), the structure is simple, and since this locking member (31) is movable with respect to the cartridge body +1) and is not fixed, no tensile force is applied, and therefore the elastic displacement portion (34) is The shutter (6) has no risk of damage even if it is made thin.

The amount of return force of (7) can be reduced, and the locking member (31)
The mounting space on the cartridge body (1) can be extremely small, especially for small disk cartridges.
Effective as a cock mechanism.

In addition, in this example, the lid 9i after the cartridge body (11) can take various (R configurations as shown in Figure J). In other words, the one shown in Figure 6A is the upper half (114). (2) and a thin bending hinge part (115
), and the lower half (3
) is the same as the above-mentioned actual hi! ! As in the example, this is done by engaging the engagement recess (16) and the engagement protrusion (17).

In addition, in the case shown in FIG. 6B, the lid (214) is attached to the upper half (
2) and an engaging claw (
215a) and the engagement recess (215b), and the lower half (3) is inserted and connected by the engagement between the engagement recess (16) and the engagement protrusion (17) as in the case described above. It is configured to lock.

In this way, various types of lids for the cartridge body can be considered in addition to the above two examples.

[Other Examples]

In the above-mentioned embodiment, the locking member is one lever-shaped with a locking part and an operating pin pressed part formed at both ends, but it may also be formed by dividing it into two parts as shown in FIG. good.

That is, it is molded from synthetic resin in the same way as the locking members of the above-mentioned embodiments, and a pair of left and right locking members (131
a) and (131b) are symmetrical in shape, and each proximal end is a thin elastic displacement part (134a).

(134b), and locking portions (132a) and (132b) are formed on the front side of the free end, and the locking portions (132a) and (132b) are sloped low towards the end on the outside of the locking portions (132a) and (132b). Operation pin pressed part (133a)
, (133b) are formed.

Then, the two O-7 members (131a) and (131b
) is provided on the inner surface of the center of the front space (13) of the cartridge body +11, that is, the center of the front end of the upper half (2), and has guide grooves (135a) and (135b) on both sides.
11 with
4b) into the guide grooves (135a) and (135b), respectively.
The shutters (6) and (7) are slidably inserted into and supported by the shutters (6) and (7).
), respectively, and the shutters (61, (71 are the locked pieces (61, (71) are used when the opening of the cartridge body fil is closed).
18) The locking part (132a) mentioned above in (19)
, (132b).

Also in this example, the opening and closing operations of the shutters f61 and (71) are performed in the same manner as in the above-mentioned example.
When the shutter (61, (71) is in the closed lock state and a sword is applied in the opening direction, the opening member (131a), (
131b) are moved in accordance with the movement of the corresponding shutters (61, (71).This locking member (131a)
, (131b) is stopped by hitting the locking surfaces (38) and (39) protruding from the inner surface of the upper half (21), and the shutters (6) and (7) remain in the locked state. Retained.

In this example configured as described above, the mouth/tsuk member (
131a) and (131b) are thin elastic displacement parts (
134+ (134b), and because it is attached laterally to the cartridge body (11), the installation space can be reduced.

FIGS. 8 to 1o show still another embodiment, and the disk cartridge of this example has a rectangular upper half (52) and lower half (53) as shown in FIGS. 8 and 9. It consists of a cartridge body (51) which is abutted against each other and connected and fixed by a plurality of screws (54), and a disk-shaped disk D such as an optical disk capable of additional recording is rotatably housed inside the cartridge body (51). In the center of the upper and lower halves (52) and (53) constituting the cartridge body (51), there is a chuck that allows the nayanking hub d provided at the center of the disc D to be stored here to face outward. Mechanism insertion ports (55) and (56) are respectively formed,
The signal recording portion of the disk D is exposed outward in the radial direction from the insertion openings (55) and (56) at predetermined intervals toward the front edge, and predetermined information signals are written on the disk D. Light that continuously outputs written information signals 1)
Openings s (57) and (58) facing information signal writing/reading means such as , Gakubi7qua/p, etc. are formed.

The cartridge body (51) also has chucking mechanism insertion ports (55), (56) and an opening (57).
.

(58) A sliding single-open shutter that opens and closes (
61) is installed. This shutter (61) is
It is formed by bending a thin metal plate made of stainless steel or the like into a mouth shape, and is arranged so as to fit on the outer surface of the cartridge body (51). A slide base that is slidably engaged in the direction (
62), and is attached so that it can slide in the direction of opening and closing the chucking mechanism insertion ports (55), (56) and openings (57), (58) together with the Conoslide base (62). The slide base (62) to which the shaft (61) is fixed has a first rack gear (
63) and - the second rack gear (64) provided on the upper half (53) and these rank gears (63), (6
4) Torsion spring (6
6), the shank (61) is always connected to the nayacking mechanism insertion port (55).

(56) and openings (57) and (58).

The lower half (53) constituting the cartridge body (51) has a locking member (67) that locks the shutter (6I) in the closed position when the shutter (61) is in the closed position. ) is attached correspondingly to the closed end of the

This locking member (67) is made of synthetic resin and is molded into a lever shape as a whole, and a locking part (68) is formed on the front side of the front half, and an outer half is formed on the outside of this locking part (68). The operation pin pressed part (69) is tilted toward the end.
is formed, and the rear half is formed as a thin elastic displacement part (70).

On the other hand, a guide groove (72) is formed by the front wall and the lateral support piece (71) on the front side of the lower half (53) facing the biasing mechanism arrangement part that closes and biases the shutter (61). By fitting the rear part of the elastic displacement part (70) of the locking member (67) into the guide groove (72) so as to be able to move laterally, the locking member (67) is installed in a horizontal frame shape and locked. (68) and the operating pin pressed portion (69) face the front notch of the upper and lower halves (52) and (53), that is, the front opening of the cartridge body (51), and the front portions are placed downward at a required interval. It faces a locking surface portion (73) protruding from the inner surface of the half (53).

When the shutter (61) is in the closed state, the locked piece (74) protruding inward from the front side of the shutter (61) is engaged with the locking portion (68) of the locking member (67) that is attached in this way. The shutter (61) is held locked.

Further, in this example as well, the opening and closing operations of the shutter (6D) are performed by the operation of the operation pin provided on the device side, as in the previous embodiment, and when the shutter (61) is in the closed and locked state, the opening and closing operations are performed in the opening direction. If force is applied to the locking member (
67) will be moved with the movement of the shutter (61), but excessive movement will be prevented by the front end hitting the locking surface (73) of the lower half (53), and the shutter (67) will be moved with the movement of the shutter (61).
61) is held in a locked state.

In this example configured as above, the lock member (6
The thin elastic displacement portion (70) of 7) will not be damaged, and since the required elasticity can be obtained by adjusting the thickness, the elastic displacement portion (70) can be bent at approximately 90° as in the past.
Alternatively, by bending approximately 180 degrees, there is no need to set the elasticity in one rotation, so the installation space can be reduced, and the assembly work can be simplified by bending.

Although the present invention has been described in detail above, the present invention is not limited to these embodiments, and can be implemented with various modifications without departing from the spirit of the present invention.

〔Effect of the invention〕

As described above, according to the present invention, the shutter that opens and closes the opening of the cartridge is locked in the closed position of the opening, and the locking member that releases the lock by elastic deformation can be moved in the sliding direction of the shutter. Since it is attached to the cartridge, no tensile force is applied to the locking member even when the shutter is forcibly opened in the locked state. Therefore, the Rosokuro IS material is elastically deformable so that elastic deformation can be performed lightly and smoothly. Even if the part is made thin, 61IFf
There is absolutely no risk of
/ri can be locked.

In addition, since no tensile force is applied to the elastic displacement part of the locking member, there is no need to take into account the tensile strength of the elastic displacement part, so the wall thickness of the elastic displacement part can be set freely and the desired elasticity can be achieved accurately. This makes it possible to reduce the force required not only to release the shutter, but also to return the shutter, allowing the bird to smoothly open and close the shutter.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is an inside sectional view of the main parts of an example of a disk cartridge according to the present invention, Fig. 2 is a top perspective view with the shutter open, and Fig. 3 is a perspective view with the shutter closed. Figure 4 is an exploded perspective view, Figure 5 is a downward perspective view of the condition, and Figure 5 is A- of Figure 2.
A-line top view, Figure 6 is a FR view of the other side corresponding to Figure 5, Figure 7 is a plan sectional view of the main parts of the other side, and Figure 8 is an exploded view of the other side in the history of the disk cartridge. FIG. 9 is a perspective view, and FIG. 1O is a plan sectional view of the main parts. In the figure, (11, (51) are the cartridge main body, (21, (
52) is the upper half, +31, (53) is the lower half, (4), +51, (55) Yu ω (57),
(58) is the opening, (61, (7), (61)
is the shutter, (1B), (19), (74
) is the locked part, (31). (131a), (131b), (67) are lock members, (32a) (32b), (132a
), (132b), (68) are the locking surfaces, (
34), (134a), (134b),
(70) is the elastic displacement Its, (35), (1
35), (,71) is the support part, (3B). (39) and (73) are locking surfaces, and D is a disk.

Claims (1)

[Scope of Claims] A cartridge body formed with an opening that allows a signal recording section of a disc-shaped recording medium to be stored to be exposed to the outside; and a cartridge body that is slidably attached to the cartridge body and opens and closes the opening. a shutter; locking the shutter in a position that closes the opening;
and a locking member arranged to release the lock by elastic deformation, the locking member being attached to the cartridge body so as to be movable in the sliding direction of the shutter. cartridge.