JP3806570B2 - Cartridge storage device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for storing a cartridge containing a disk as a recording medium, and more particularly to a signal recording or reproducing apparatus.
[0002]
[Prior art]
Conventionally, as shown in FIG. 16, a recording medium in which a disk (60) is stored in a cartridge (6) has been proposed. A shutter (63) is slidably provided on the upper surface of the cartridge (6). When the shutter (63) is opened, a part of the disk (60) is exposed. The cartridge (6) is provided with positioning holes (61) and (62) whose lower surfaces are opened.
FIG. 17 is a side view of an apparatus for storing the cartridge (6) and recording or reproducing a signal via the disk (60). A base end portion of a holder (4) for accommodating the cartridge (6) is pivotally supported (4a) at one end portion on the chassis (5) on which the turntable (7) is mounted. Between the holder (4) and the chassis (5), a locking mechanism (not shown) for keeping the holder (4) closed is provided. Positioning pins (52) and (52) that fit into the positioning holes (61) and (62) of the cartridge (6) are provided upright at the front and rear ends of the chassis (5). Each positioning pin (52) is formed by projecting a conical guide protrusion (59) from the upper surface of a cylindrical receiving shaft (58) that receives the lower surface of the cartridge (6), and the cartridge (6) has a positioning hole (61). The peripheral wall of (62) descends while sliding on the guide protrusion (59) and is placed on the upper surface of the receiving shaft (58).
[0003]
The free end portion side of the holder (4) is opened, and the cartridge (6) is inserted from the opening. A torsion spring (49) for urging the holder (4) upward is fitted to the pivot (4a) of the holder (4), and a shaft (47) protruding from the side of the holder (4) is attached to the side of the chassis (5). The holder (4) is prevented from rising too much in contact with the upper end of the opened arc hole (48). In the following description, the cartridge insertion direction is the front and the reverse direction is the rear.
When recording or reproducing a signal, the cartridge (6) is first inserted into the holder (4) at the raised position. The positioning holes (61) and (62) of the cartridge (6) face the positioning pins (52) and (52). Thereafter, the holder (4) is rotated downward. The positioning holes (61) and (62) are fitted into the guide protrusions (59) of the positioning pins (52) and (52), and the disk (60) is placed on the turntable (7) to record or reproduce signals. .
[0004]
[Problems to be solved by the invention]
In the above apparatus, the holder (4) is biased upward. Therefore, if the holder (4) is closed and if the holder (4) and the chassis (5) are not sufficiently engaged for some reason, the holder (4) opens carelessly and the cartridge (6) is dropped. Invite
In view of this point, an apparatus shown in FIGS. 18A and 18B has been proposed. This is provided with a pair of link plates (800) and (800) that are pivotally supported (810) between the holder (4) and the chassis (5). The holder (4) is urged downward by connecting (5) with a tension spring (820).
When the cartridge (6) is inserted into the holder (4), the holder (4) is lifted by hand as shown in FIG. 18 (a). When the hand is released after the cartridge (6) is inserted into the holder (4), the holder (4) is lowered by the tension spring (820) as shown in FIG. 18 (b), and the disk in the cartridge (6) is turned. Placed on the table (7). Since the holder (4) is urged toward the turntable (7), the cartridge (6) does not inadvertently fall out of the holder (4).
However, in the apparatus shown in FIGS. 18 (a) and 18 (b), since the holder (4) and the chassis (5) are not provided with a locking mechanism, when the apparatus is subjected to vibration or impact, the holder (4) And the chassis (5) collide with each other and make a shocking sound, which makes the user uncomfortable.
In view of this point, the applicant always urges the holder (4) toward the turntable (7) to prevent the cartridge (6) from being inadvertently detached from the holder (4). The idea was to lock the chassis (5). In addition, when the cartridge (6) is inserted, the lock is easily released, and it is necessary to devise a user-friendliness.
An object of the present invention is to prevent inadvertent dropping of the cartridge from the holder, lock the holder and the chassis, and easily remove the lock when inserting the cartridge.
[0005]
[Means for solving the problems]
A spring body for urging the holder (4) in the closing direction is attached to the base end portion of the holder (4), and the upper door body (1) is arranged in the cartridge insertion direction at the free end portion of the holder (4). The included chassis (5) is rotatably provided in a plane orthogonal to the upper surface. A lower door body (2) is provided on a position corresponding to the upper door body (1) on the chassis (5) so as to be rotatable in the same plane as the upper door body (1).
Furthermore, the lock pawl (20) that locks the door body (1) (2) in a state where the one door body engages with a locking portion (15) provided on the other door body and the holder (4) is closed. ) And a guide member for guiding the movement of the cartridge (6) inserted into the holder (4) to the holder (4) is provided on the lower door body (2). At the time of contact with the guide member, the lower door body (2) rotates in a direction to release the lock with the upper door body (1).
[0006]
[Action and effect]
The holder (4) is biased in the closing direction by a spring body, and an upper door body (1) provided at the free end of the holder (4) and a lower door body (2) provided on the chassis (5). Is locked in the closed state of the holder (4). Therefore, no impact noise is generated between the holder (4) and the chassis (5) when vibration or impact is applied to the apparatus.
When the cartridge (6) is not inserted into the holder (4), the cartridge (6) first comes into contact with the guide member of the lower door (2). The cartridge (6) is guided to the upper door (1) by the guide member. At the same time, when the cartridge (6) comes into contact with the guide member, the lower door body (2) rotates in a direction to release the lock with the upper door body (1). The cartridge (6) guided to the holder (1) presses and rotates the upper door body (1) unlocked from the lower door body (2) and enters the holder (4). That is, when the cartridge (6) is inserted into the holder (4), the upper door (1) and the lower door (2) are automatically unlocked. Thereby, when unlocking an upper door body (1) and a lower door body (2), a user does not take time and convenience improves.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
(Overview)
Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a disk recording or reproducing apparatus. As in the prior art, the disk (60) is housed in the cartridge (6), and the cartridge (6) is provided with positioning holes (61) and (62) whose bottom surfaces are opened. The front positioning hole (61) is a long hole extending forward and backward, and the rear positioning hole (62) is a round hole.
The device is formed in a substantially rectangular shape as a whole, and an upper case (3) is provided in the lower case (30) so as to be opened and closed. Such a device is called a slot-in type and is often carried in a user's outer pocket or the like, so that the overall shape is a substantially rectangular shape that can be easily stored in the pocket.
A holder (4) having an open rear end is mounted in the upper case (3) shown in FIG. 1, and a chassis (5) is mounted in the lower case (30). The front end surfaces of the holder (4) and the chassis (5) are fixed to the upper case (3) and the lower case (30), respectively, and the holder (4) is pivotally supported (4a) at the front end of the chassis (5). . The holder (4) is urged in the closing direction by a torsion spring (49) provided in the vicinity of the pivot (4a).
[0008]
Spaces are formed between the right side surface of the holder (4) and the upper case (3), and between the right side surface of the chassis (5) and the lower case (30), respectively, and a holder lock mechanism described later in each space. And an unlocking mechanism is provided. The rear end surface of the upper case (3) is open, and the right rear end is bent inward to form a horizontal plate (31).
The apparatus according to this example is characterized by cartridge insertion and ejection operations, and is outlined below. When the cartridge is inserted, as shown in FIG. 8 (c), the upper door (1) of the upper case (3) is rotated to open the holder (4). When the cartridge (6) is further inserted, as shown in FIGS. 11 (a) and 11 (b), the holder (4) passes through the first and second opening positions as shown in FIG. 11 (c). Close to. When the cartridge is ejected, the eject lever (100) shown in FIG. 12 is rotated to forcibly raise the holder (4), and the cartridge (6) is taken out from the holder (4).
[0009]
(Outline of cartridge insertion / removal mechanism)
A horizontally long upper door (1) covering the rear end opening of the holder (4) is pivotally supported (1a) at the free end of the holder (4) in FIG. 1, and the pivotal support (1a) is the upper door. It is deployed inside (1). A lower door body (2) is pivotally supported (2a) facing the upper door body (1) on the chassis (5). Both doors (1) and (2) are made of a material (for example, synthetic resin) with a smooth surface and appropriate rigidity so that the end surface of the cartridge (6) contacts and the cartridge (6) is not damaged. Both are biased in the closing direction by a torsion spring (not shown) fitted to the pivotal support portions 1a and 2a.
2 (a) is a side view of the upper door body (1), FIG. 2 (b) is a plan view of the upper door body (1), FIG. 3 (a) is a side view of the lower door body (2), FIG. (b) is a top view of a lower door body (2). The upper door body (1) is formed by integrally providing plate pieces (11) and (11) on both sides of the collar portion (10), and each plate piece (11) is provided with a pivotal support portion with the holder (4). A hole (13) is opened. The plate piece (11) extends forward beyond the hole (13) to form a kick piece (12). The lower surface of the collar portion (10) forms a first inclined surface (14), and the first inclined surface (14) is inclined downward along the cartridge insertion direction as described later. A locking pin (15) protrudes outward between the hole (13) and the flange (10). The hole (13) is located below the lower end of the first slope (14).
The lower door body (2) includes a lock claw (20) hooked on the locking pin (15), and a projecting piece (21) inclined downward from the lower end of the lock claw (20) along the cartridge discharge direction. And a cam follower (23) extending downward from the vicinity of the base end of the projecting piece (21). The rear end surface of the projecting piece (21) forms a second inclined surface (22), and a shaft (24) serving as a pivot (2a) with the chassis (5) faces outward at the lower end of the locking claw (20). Protruding.
[0010]
(Details of holder and chassis)
FIG. 4 is an exploded perspective view of the holder (4) and the chassis (5). A plate-like battery (700), specifically, a Ni—Cd battery is attached to the apparatus. The chassis (5) is configured by arranging a main chassis (50) made of synthetic resin and a battery holder (51) formed by bending a metal plate in front and back. The battery holder (51) projects the frame (56) from the right side of the support plate (55) located substantially in the same plane as the upper surface of the main chassis (50) (see FIG. 12), below the support plate (55) and A battery (700) is housed inside the frame (56). The battery (700) is sandwiched between the rear wall of the frame (56) and the rear wall of the main chassis (50).
[0011]
A turntable (7) is provided on the main chassis (50), and a pickup (70) for irradiating a disk with a beam is provided so as to be able to approach and separate from the turntable (7). On both sides of the front end of the main chassis (50), shaft-shaped first and second receiving projections (53) and (54) that support the front end of the cartridge (6) protrude, and the cartridge ( 6) A positioning pin (52) that fits into the positioning hole (62) at the rear end is provided. In this example, only one positioning pin (52) is provided for receiving the rear end of the cartridge (6).
The first and second receiving projections (53) and (54) and the receiving shaft (58) of the positioning pin (52) receive the lower surface of the cartridge (6), and the turntable (7) is a disk in the cartridge (6). The turntable (7) is higher than the first and second receiving projections (53) (54) and the receiving shaft (58) since it supports the (60).
[0012]
If both the main chassis (50) and the battery holder (51) are formed of metal plates, the entire chassis (5) becomes heavy. Further, it is necessary to provide the first and second receiving protrusions (53) and (54) by drawing, which causes distortion of the main chassis (50). Although it is possible to outsert the main chassis (50) to provide the first and second receiving protrusions (53) and (54), the cost increases.
On the other hand, if both the main chassis (50) and the battery holder (51) are formed of synthetic resin, the weight of the entire chassis (5) can be reduced, but the strength of the battery holder (51) is reduced. Since the battery holder (51) holds the battery (700), if the battery holder (51) is easily distorted by an external impact, the battery (700) falls. For this reason, the battery holder (51) is formed of a metal plate, the main chassis (50) is formed of synthetic resin, the rigidity of the battery holder (51) is increased, and the entire chassis (5) is reduced in weight.
[0013]
A support bracket (200) extending forward and backward is attached across the right side of the main chassis (50) and battery holder (51) in FIG. 4, and the slide plate (300) can be moved back and forth in the support bracket (200). Attached to.
The support bracket (200) is a longitudinal plate (210) that is located at the rear end and is bent inward, and a lifting slope that is disposed on the front side of the longitudinal plate (210) and tilts upward toward the front ( 220) and a guide groove (230) which is located on the front side of the lifting slope (220) and is recessed downward.
The slide plate (300) is biased backward by a spring (340), and the rear end is bent inward to form a kick plate (310). A slanted end surface (320) inclined downward toward the front is formed on the rear side of the longitudinal center portion of the slide plate (300), and a holder lock mechanism is formed in front of the slanted end surface (320). A claw piece (330) is provided upward. As will be described later, the slide plate (300) is operated when the cartridge (6) is discharged.
[0014]
A push-up lever (400) is provided between the slide plate (300) and the support bracket (200), and the push-up lever (400) is pivotally supported by the support bracket (200) (410). Has been. A torsion spring (not shown) for biasing the push-up lever (400) downward is fitted to the pivot (410), and a small shaft (420) protruding from the push-up lever (400) is attached to the slide plate (300 ) In contact with the beveled end face (320). As will be described later, the push-up lever (400) pushes up the horizontal plate (31) of the upper case (3) when the cartridge (6) is ejected.
The shaft (24) (see FIG. 3 (b)) of the lower door body (2) fits into a hole (not shown) formed in the support piece (500) protruding from the side surface of the chassis (5), It constitutes the pivot (2a) of the door (2).
An eject lever (100) in contact with the slide plate (300) is provided on the lower surface of the chassis (5) so as to be rotatable in a horizontal plane. When the cartridge (6) is ejected from the holder (4), as will be described later. Rotate the eject lever (100) by hand and push the slide plate (300) forward. That is, the eject lever (100) constitutes a holder unlocking mechanism.
[0015]
A slide piece (9) formed by bending a metal plate is provided on the upper surface of the holder (4) so as to be movable back and forth, and a base end portion is provided on the holder (4) on the slide piece (9). The pushing lever 8 is pivotally supported 8a.
FIG. 5 is an exploded plan view of the holder (4), the slide piece (9), and the pushing lever (8). The holder (4) is provided with a transparent window (40) on the upper surface, and four support pins (41) (41) (41) (41) are provided on the peripheral edge of the transparent window (40). On both sides of the slide piece (9), there are four elongated holes (92) (92) (92) (92) extending in the front-rear direction that fit into the support pins (41) (41) (41) (41). A fitting pin (90) is provided at the rear end.
Small plates (93) and (93) protrude downward from both ends of the slide piece (9), and a guide shaft (91) protrudes outward from each small plate (93).
[0016]
A retaining pin (42) is provided between the right support pins (41) and (41) on the holder (4), and the retaining pin (42) is opened at one end of the pushing lever (8). The fitted hole (80) is fitted to constitute the pivot portion (8a) of the push lever (8). The pushing lever (8) is urged counterclockwise by a tension spring (86) hung between the pushing lever (8) and the holder (4).
The free end portion of the pushing lever (8) is bent downward to constitute a pushed piece (81), and the pushed piece (81) passes through the transparent window (40) of the holder (4) to enter the cartridge. Projects into the transition path (6). The push lever (8) is also provided with a cam hole (82) that fits into the fitting pin (90) of the holder (4), and the cam hole (82) is inclined first with respect to the cartridge insertion direction. A hole (83), an arc hole (84) whose center of curvature coincides with the center of the fitting hole (80), and a second inclined hole extending from one end of the arc hole (84) toward the fitting hole (80) ( 85).
[0017]
A through hole (43) is formed in the right side wall of the holder (4), and a leaf spring (600) provided with a bent portion (610) entering the holder (4) at the peripheral edge of the through hole (43). ) Is attached. A distance L from the bent portion (610) to the left side wall of the holder (4) shown in FIG. 5 is formed approximately equal to the width of the cartridge (6). In addition, you may provide the protrusion (not shown) which the side surface of a cartridge (6) touches inside the left side wall of a holder (4).
When the cartridge (6) is inserted into the holder (4), the cartridge (6) is sandwiched between the left side wall of the holder (4) and the bent portion (610) of the leaf spring (600) and the left-right deflection is restricted. That is, the cartridge (6) inserted into the holder (4) is fitted with the corresponding positioning pin (52) in the rear positioning hole (62), the backlash in the front-rear direction is restricted, and the holder (4) Left and right play is restricted by the front end.
As shown in FIG. 7, the peripheral edge of the positioning hole (61) on the front side of the cartridge (6) is in contact with the upper surface of the second receiving projection (54), and the left side of the front end of the cartridge (6) is the first receiving projection (53). Supported by In this respect, unlike the conventional apparatus in which the front and rear end portions of the cartridge (6) are fitted to the two positioning pins (52) and (52), the opening amount of the holder (4) is reduced as described later. .
[0018]
6 shows that the holder (4) covered with the upper case (3) is placed on the surface including the BB line of FIG. 4 and the chassis (5) covered with the lower case (30) is taken along the line CC of FIG. It is sectional drawing fractured | ruptured in the surface containing each. The pivot (32) protrudes inwardly from the right wall of the upper case (3), and the tip part fits into the holder (4) through the hole (13) of the upper door body (1), and the upper door body (1 ) Of the pivot (1a).
Below the upper door body (1), the receiving plate (57) protrudes inward from the frame (56), and as will be described later, the kick-out piece (12) of the upper door body (1) is inserted into the receiving plate (57 The upper case (3) is opened by rotating while touching. The space between the vertical plate (210) and the receiving plate (57) is opened, and the kick piece (12) of the upper door body (1) enters the gap as described later.
[0019]
(Opening operation of door and holder)
FIGS. 8A, 8B, and 8C are side views showing a state in which the cartridge 6 is not inserted into the holder 4 in the upper case 3, and FIGS. FIGS. 10 (a) and 10 (b) are plan views showing the operations of the slide piece (9) and the pushing lever (8) when the cartridge is inserted. 9 (a), 9 (b), 10 (a), and 10 (b), the torsion spring (49) is not shown.
When the cartridge is inserted, as shown in FIG. 8 (b), the upper door body (1) is first opened to allow the cartridge (6) to enter the holder (4), and then the holder (4) and the upper case (3 ) Opens to the first open position. Thereafter, the holder (4) and the upper case (3) are further opened to the second opening position and then closed. The reason why the holder (4) is opened in two stages will be described later.
[0020]
Waiting state As shown in FIG. 8 (a), in the waiting state where the cartridge (6) is not yet inserted, the lock claw (20) of the lower door body (2) is engaged with the upper door body (1). The upper door body (1) is prevented from being inadvertently opened by being caught on the pin (15). Further, the kick-out piece (12) of the upper door body (1) contacts the receiving plate (57) of the chassis (5).
As shown in FIG. 9 (a), the slide piece (9) is located on the rearmost side, and the fitting pin (90) of the slide piece (9) is fitted to the left end of the first inclined hole (83). Yes. As described above, the pushed piece (81) of the pushing lever (8) protrudes into the transition path of the cartridge (6) through the transparent window (40) of the holder (4).
[0021]
When a cartridge is inserted
(Holder first opening position)
As shown in FIG. 8 (b), when the cartridge (6) is inserted into the holder (4), the front end of the cartridge (6) is pivoted on the second inclined surface (22) of the lower door body (2). It contacts the lower side of the branch (2a). The lower door body (2) rotates counterclockwise around the pivot (2a) against the spring bias, and the engagement between the locking pin (15) and the locking claw (20) is released. Since the front end of the cartridge (6) is in contact with the second inclined surface (22), the cartridge rises along the second inclined surface (22) and pushes the first inclined surface (14) of the upper door body (1).
Since the pivot (1a) of the upper door body (1) is located below the first slope (14), the upper door (1) is pivoted as shown in FIG. 8 (c). Rotate clockwise around (1a). However, the upper door body (1) has the kick piece (12) in contact with the receiving plate (57) of the chassis (5), so that the kick piece (12) kicks the receiving plate (57), so that the holder (4) opens. Since the upper door body (1) rises with the holder (4), the locking pin (15) is removed from the rotation transition path of the lock claw (20). Since the cartridge (6) is inserted into the opening holder (4) and rises along the second slope (22), the lower door body (2) is pivoted on the second slope (22) (2a). Is returned to its original position by a torsion spring fitted to the pivot (2a).
[0022]
11 (a), 11 (b), and 11 (c) are side views showing a state in which the holder (4) is opened, and the eject lever (100), the upper case (3), and the lower case (30) are omitted. . FIG. 11 (a) shows a state in which the holder (4) is opened from the side view of FIG. 8 (c), and the upper door (1) has the lower end of the first slope (14) on the upper surface of the cartridge (6). Open while touching. This position is called the first opening position of the holder, and is also the door opening position where the upper door body (1) is opened.
[0023]
(Holder second opening position)
When the cartridge (6) is further inserted into the holder (4), as shown in FIG. 9 (b), the front end of the cartridge (6) pushes the pushing piece (81) of the pushing lever (8), and the tension spring ( Rotate clockwise around the pivot (8a) against 86). The side edge of the first inclined hole (83) pushes the fitting pin (90) forward and advances the slide piece (9).
As shown in FIG. 11 (b), as the slide piece (9) advances, the guide shaft (91) moves along the lifting slope (220) of the support bracket (200), and the holder (4) is pivoted ( 4a) Ascending and turning around. The tip of the kick piece (12) of the upper door body (1) contacts the vertical plate (210) of the support bracket (200), and the upper door body (1) further rotates clockwise. Accordingly, the lower end of the first inclined surface (14) of the upper door body (1) is detached from the upper surface of the cartridge (6). That is, the upper door body (1) is spring-biased in the closing direction, but the frictional force due to this biasing force is not applied to the cartridge (6). This position is called the second opening position of the holder because the holder (4) is opened more than the first opening position.
[0024]
When the cartridge (6) is further pushed in from the second opening position, the cartridge (6) further rotates the push lever (8) clockwise as shown in FIG. 10 (a). However, the fitting pin (90) is fitted in the arc hole (84), and the slide piece (9) does not advance even if the push lever (8) rotates. The holder (4) maintains the second open position.
[0025]
When the cartridge (6) is pushed to the end, as shown in FIG. 10 (b), the fitting pin (90) is detached from the arc hole (84) and is fitted into the second inclined hole (85). The side edge of the second inclined hole (85) pushes the fitting pin (90) forward to advance the slide piece (9).
When the slide piece (9) advances after the holder (4) reaches the second opening position, the guide shaft (91) of the holder (4) faces the upper opening of the guide groove (230). Since the holder (4) is biased downward by the torsion spring (49), the guide shaft (91) descends the guide groove (230) as shown in FIG. 11 (c). The guide shaft (91) contacts the upper surface of the claw piece (330) and once pushes the slide plate (300) forward, but when the guide shaft (91) passes the claw piece (330), it slides by the spring (340). The plate (300) is returned, and the claw piece (330) locks the guide shaft (91). The holder (4) is locked to the chassis (5).
[0026]
As the holder (4) is lowered, the contact between the kick piece (12) of the upper door body (1) and the vertical plate (210) is released, and the upper door body (1) is moved to FIG. 11 (c). Return to the original position and close as shown. This position is the door closing position. That is, the upper door body (1) rotates between the door opening position and the door closing position by inserting the cartridge (6).
As shown in FIG. 10 (b), the cartridge (6) is placed on the turntable (7), and signals are recorded or reproduced. As shown in FIG. 11 (c), since the guide shaft (91) is fitted in the guide groove (230) and the back and forth play of the holder (4) is restricted, the push lever (8) engaged with the holder (4) is controlled. Does not move.
[0027]
(Reason for opening the holder in two stages)
The reason why the holder (4) goes through two stages of the first and second open positions will be described below.
15 (a) and 15 (b) are side views showing the opening position of the holder (4) in a simplified manner, where (a) shows the first opening position and (b) shows the second opening position, respectively. Show.
In the first open position, the holder (4) opens until the lower surface of the cartridge (6) exceeds the positioning pin (52) at the rear end of the chassis (5). As described above, the turntable (7) is formed higher than the receiving shaft (58) of the positioning pin (52). Even if the cartridge (6) is inserted in this first open position, the cartridge ( 6) does not exceed the turntable (7).
In the second open position, the holder (4) opens until the lower surface of the cartridge (6) exceeds the turntable (7). When the cartridge (6) is pushed in this state, the lower surface of the front end portion of the cartridge (6) faces the second receiving projection (54).
That is, the holder (4) opens slightly when the cartridge (6) is inserted, and then opens largely. If the holder (4) is opened to the second opening position from the beginning of the cartridge (6) insertion, the holder (4) will be opened for a long time, so that foreign matter such as dust enters the chassis (5). The fear increases. As is well known, the signal in the disk (60) in the cartridge (6) is recorded at a high density. Therefore, if dust or the like adheres, it may cause a malfunction.
In this example, since the time during which the holder (4) is largely opened is shortened, the possibility of foreign matters such as dust entering the chassis (5) can be reduced. This prevents malfunction due to intrusion of dust or the like.
[0028]
(Technical effect when inserting cartridge)
Further, in this example, the left and right backlash of the cartridge (6) is regulated by the holder (4), so that the guide protrusion is formed on the second receiving protrusion (54) provided at the front end of the chassis (5). (59) (see FIG. 17) is not provided. Accordingly, the height of the second receiving protrusion (54) is lower than that of the positioning pin (52).
Conventionally, as shown in FIG. 17, the holder (4) needs to be opened until the cartridge (6) exceeds the positioning pin (52) at the front end of the chassis (5). On the other hand, in this example, since the holder (4) has only to be opened until the cartridge (6) exceeds the second receiving projection (54), the opening amount becomes small. Therefore, intrusion of dust or the like can be prevented at this point. Further, as described above, such a device may be used in a narrow space such as a pocket of an outer jacket, and the usability is improved if the opening amount of the holder (4) is small.
[0029]
Further, as shown in FIG. 16, a gap F is provided between the side surface of the cartridge (6) and the outer periphery of the disk (60). However, there is almost no gap between both side surfaces of the holder (4) and both side surfaces of the cartridge (6). Therefore, when the cartridge (6) is inserted into the holder (4), even if the chassis (5) is shaken, the disk (60) is displaced only by the gap F on both sides. In other words, the disk (60) only rattles the gap with the cartridge (6). As a result, the disk (60) can be easily mounted on the turntable (7).
In addition, since there is almost no gap between both sides of the holder (4) and both sides of the cartridge (6) after the disc is mounted, the outer peripheral surface of the disc (60) is in contact with both sides of the cartridge (6). Nor.
[0030]
Furthermore, the upper door body (1) is in contact with the vertical plate (210) until the holder (4) is closed after passing through the second opening position from the first opening position of the holder (4), and the first slope ( The lower end of 14) is separated from the upper surface of the cartridge (6). Since the upper door body (1) is spring-biased in the closing direction, the friction force by the upper door body (1) is not applied to the cartridge (6) during this period. Therefore, only the pressing load by the pushing lever (8) is applied to the cartridge (6), and the load when the cartridge (6) is inserted is reduced.
[0031]
(Cartridge eject mechanism)
12 is a rear view of the frame (56) of the chassis (5), and FIG. 13 is a side view of the vicinity of the push-up lever (400). The eject lever (100) is pivotally supported (100a) at the end of the frame (56), is positioned below the lower door body (2), and is biased by a spring (not shown) in a counterclockwise direction. The eject lever (100) is raised one step upward to form a convex surface (110), the side surface of the convex surface (110) forms a cam surface (120), and the cam follower (23) protruding from the lower door body (2) It is located in the vicinity.
[0032]
Ejecting operation One end of the ejecting lever (100) constitutes a pushing projection (130) that contacts the kicked plate (310) of the slide plate (300). When the eject lever (100) shown in FIG. 12 is turned by hand in the clockwise direction (X direction in FIG. 12), the push protrusion (130) is kicked, the plate (310) is pushed, and the slide plate (300) is moved to the spring ( 340) Push forward against the bias. The cam surface (120) pushes the cam follower (23) and, as shown in FIG. 13, rotates the lower door body (2) counterclockwise around the pivot (2a). The upper door body (1) and lower door body (2) are unlocked.
[0033]
FIGS. 14A, 14B, and 14C are side views showing the ejecting operation, and the upper case 3 and the chassis 5 are shown by alternate long and short dash lines. As shown in FIG. 14 (a), as the slide plate (300) advances, the engagement between the claw piece (330) and the guide shaft (91) is released, and the holder (4) is allowed to rise.
The oblique end surface (320) of the slide plate (300) presses the small shaft (420) of the push-up lever (400), and the push-up lever (400) is rotated upward. The free end of the push-up lever (400) kicks up the horizontal plate (31) of the upper case (3). Since the upper door body (1) and lower door body (2) are unlocked, the upper case (3) can rotate around the pivot (4a) and rises against the torsion spring (49). To do. The guide shaft (91) escapes from the guide groove (230).
[0034]
Since the fitting between the guide shaft (91) and the guide groove (230) is released, the slide piece (9) is allowed to slide backward. Since the pushing lever (8) is biased by the tension spring (86) (see FIG. 10 (b)), the slide piece (9) engaged with the cartridge (6) and the pushing lever (8) moves backward. To do. The fitting pin (90) of the slide piece (9) shown in FIG. 10 (b) escapes from the second inclined hole (85) of the push lever (8) and moves in the arc hole (84). The position shown in (b), that is, the second opening position of the holder (4) is reached. As shown in FIG. 11 (b), the guide shaft (91) of the slide piece (9) is in contact with the oblique end surface (220) of the support bracket (200). The upper door body (1) opens with the tip of the kick piece (12) in contact with the vertical plate (210) to open the transition path of the cartridge (6). A part of the cartridge (6) is discharged from the holder (4).
[0035]
When the hand is released from the eject lever (100), the eject lever (100) is returned to its original position by the spring, and the lower door body (2) is also returned as shown in FIG. 14 (b). The slide plate (300) is moved backward by the spring (340), and the push-up lever (400) with the small shaft (420) disengaged from the slide plate (300) returns to the original position.
The slide piece (9) further retracts and returns to the position shown in FIG. 9 (a). The guide shaft (91) of the slide piece (9) retreats on the oblique end surface (220) of the support bracket (200), and the holder (4) can be lowered.
[0036]
Pull out the cartridge (6) from the holder (4) by hand. The holder (4) is lowered by the torsion spring (49), and the contact between the kick piece (12) of the upper door body (1) and the vertical plate (210) is released. Therefore, as shown in FIG. The door body (1) rotates to close the rear end opening of the holder (4). The upper case (3) and the holder (4) are lowered, and the locking pin (15) of the upper door body (1) comes into contact with the tip of the locking claw (20) of the lower door body (2) to temporarily lower the lower door body. (2) is rotated counterclockwise, but when it passes through the tip of the lock claw (20), it engages with the lock claw (20) restored by the spring of the pivot (2a). The upper door (1) is locked and returns to the standby state.
[0037]
In the above description, a mechanism for opening and closing the shutter (63) of the cartridge (6) is omitted, but this opening and closing mechanism is provided in the holder (4) and has a well-known configuration.
[0038]
The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.
[Brief description of the drawings]
FIG. 1 is a perspective view of a disk recording or reproducing apparatus.
FIG. 2 (a) is a side view of the upper door body, and FIG. 2 (b) is a plan view of the same upper door body.
FIG. 3 (a) is a side view of the lower door body, and FIG. 3 (b) is a plan view of the lower door body.
FIG. 4 is an exploded perspective view of a holder and a chassis.
FIG. 5 is an exploded plan view of a holder, a slide piece, and an extrusion lever.
FIG. 6 is a cross-sectional front view in which the holder is cut along the line B-B and the chassis is cut along the line C-C.
FIG. 7 is a plan view of a chassis and a cartridge.
FIGS. 8A, 8B and 8C are side views showing a state in which the cartridge is not inserted into the holder.
9 (a) and 9 (b) are plan views showing the operation of the slide piece and the pushing lever when the cartridge is inserted.
FIGS. 10A and 10B are plan views showing the operation of the slide piece and the push-out lever when the cartridge is inserted.
FIGS. 11A, 11B, and 11C are side views showing a state in which the holder is opened.
FIG. 12 is a rear view of the frame.
FIG. 13 is a side view of the vicinity of a push-up lever.
FIGS. 14A, 14B, and 14C are side views showing an ejecting operation. FIG.
FIGS. 15A and 15B are side views showing the opening position of the holder. FIG. 15A shows the first opening position, and FIG. 15B shows the second opening position.
FIG. 16 is a plan view of the cartridge.
FIG. 17 is a side view of a conventional disk recording or reproducing apparatus.
FIGS. 18A and 18B are side views of another conventional disc recording or reproducing apparatus, in which FIG. 18A shows an open state and FIG. 18B shows a closed state.
[Explanation of symbols]
(1) Upper door
(2) Lower door body
(4) Holder
(5) Chassis
(6) Cartridge
(22) Second slope

Claims (2)

A holder (4) having an opening into which a cartridge (6) containing a disk (60) is inserted, and a base end portion of the holder (4) are pivotally supported (4a). In a cartridge storage device comprising a chassis (5) equipped with 7),
A spring body that biases the holder (4) in the closing direction is attached to the base end of the holder (4), and the upper door (1) is inserted into the cartridge at the free end of the holder (4). It includes a direction and includes a lower door body (2) at a position corresponding to the upper door body (1) on the chassis (5). ) Is rotatably provided in the same plane as the upper door body (1),
One door body has a locking claw (20) that locks the door body (1) and (2) in a state where the holder (4) is closed by engaging with a locking portion (15) provided on the other door body. Is provided,
The lower door body (2) is provided with a guide member for guiding the movement of the cartridge (6) inserted into the holder (4) to the upper door body (1),
The cartridge storage device, wherein when the cartridge (6) is brought into contact with the guide member, the lower door body (2) rotates in a direction to release the lock with the upper door body (1). The cartridge storage device according to claim 1, wherein the guide member is a slope (22) formed on the lower door body (2) and inclined downward along the cartridge discharge direction.

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