JPH087555Y2 - Locking mechanism for magazines for storing recording media - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Overview According to the present invention, a locking portion is formed in a magazine, and a magazine holder for accommodating the magazine has a first locking claw and a second locking claw for locking the locking portion. Are installed along the discharge direction. The first locking pawl is spring-biased toward the magazine by the interlocking biasing member, so that the magazine can be locked reliably. Further, the second locking claws are interlocked and biased by the interlocking biasing member so that the second locking claws have a symmetrical posture according to the posture of the first locking claws with respect to the magazine. Therefore, the first
When the locking claws are unlocked by the unlocking means, the spring-biased magazine is ejected, and the second locking claws are interlocked to lock the magazines at the locking portion at the ejection completion position. In this way, a fixed amount of magazines can be discharged. Thereafter, when the unlocking operation of the first locking claw by the unlocking means is released, the interlocking biasing means releases the locking of the second locking claw to the locking part of the magazine, and as a result, The magazine stopped at the discharge completion position can be taken out smoothly. That is, after ejecting the magazine with a constant discharge amount by a simple configuration,
It can be taken out smoothly.

INDUSTRIAL APPLICABILITY The present invention mounts and locks a magazine for accommodating a plurality of recording media, such as a compact disk, in a magazine holder of a reproducing device that automatically converts and reproduces the recording media, Further, the present invention relates to a locking mechanism of a recording medium storing magazine that is unlocked for taking out the magazine.

2. Description of the Related Art In recent years, a disc reproducing device such as a compact disc has been remarkably spread, and accordingly, an automatic playing device capable of continuously playing a plurality of compact discs has been put into practical use.
In the automatic performance device, a plurality of compact discs are stacked and stored in a magazine, the magazine is attached to the magazine holder, and the magazine holder is displaced up and down to a predetermined position, where the compact disc in the magazine is compacted. Take out the disc and perform. Alternatively, there is also a configuration in which a cradle that slides in the stacking direction of the compact disks with respect to the magazine mounted on the magazine holder is brought to the predetermined position and the compact disks are taken out and guided to the reproducing mechanism.

After the completion of the performance, the compact disc is stored again in the magazine, and the compact disc to be subsequently played is selected, so that continuous reproduction can be sequentially executed.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the disk reproducing device as described above, it is necessary to securely mount and lock the magazine on the magazine holder,
Otherwise, the desired compact disk cannot be taken out selectively.

On the other hand, the magazine unlocked from the magazine holder needs to be smoothly discharged without resistance. As an example of the smooth discharging means, in the conventional locking mechanism, the magazine unlocked from the magazine holder is discharged to the outside by the driving means including the motor and the oil damper. Although the driving means can realize smooth and constant discharge, there is a problem that the structure becomes complicated and the production cost increases.

On the other hand, as a simple configuration, the drive means is configured by a spring that biases the magazine in the ejection direction. As a result, the structure can be simplified, but it is not possible to expect a constant discharge amount depending on the weight of the magazine. That is, the ejection completion positions of the magazine are sparse, and the magazine cannot be stopped at a fixed position.

Therefore, the object of the present invention is to securely lock the magazine to the magazine holder with a simple structure, and
It is an object of the present invention to provide a locking mechanism for a magazine for storing a recording medium, which can smoothly discharge the magazine with a constant discharge amount after unlocking.

Means for Solving the Problems The present invention relates to a locking mechanism for a recording medium storage magazine, wherein a magazine for storing a recording medium is mounted on a magazine holder, wherein the magazine has a locking portion, The holder is angularly displaced around the axis perpendicular to the magazine ejection direction,
A first locking claw that locks to the locking portion in a state where the magazine is mounted on the magazine holder, and is positioned downstream in the discharge direction with respect to the axis and angularly displaced around the axis, so that the magazine is removed from the magazine holder. A second locking claw that locks the locking portion in the discharged state and a spring biasing the first locking claw toward the magazine, and depending on the attitude of the first locking claw with respect to the magazine. An interlocking biasing means for interlocking the second locking claw with a spring so as to be in a symmetrical posture, and an unlocking means for unlocking the first locking claw by removing it from the locking portion. And a spring means for urging the magazine in the ejection direction by a spring, and a locking mechanism for a magazine for storing a recording medium.

Operation According to the present invention, the magazine for storing the recording medium is mounted on the magazine holder by the locking mechanism. The magazine has a locking portion, while the magazine holder has a first
The locking claw, the second locking claw, the interlocking biasing means, the unlocking means, and the spring means are provided. The first locking claw is angularly displaced around an axis line that is perpendicular to the ejecting direction of the magazine, and locks to the locking portion with the magazine mounted on the magazine holder. The first locking claw is spring-biased toward the magazine by the interlocking biasing means. Thus, the magazine is securely locked and mounted in the magazine holder.

Further, the second locking claw is located downstream of the axis in the discharging direction and can be angularly displaced around the axis, and the interlocking biasing means brings the first locking claw into a posture with respect to the magazine. Accordingly, the springs are interlocked with each other so as to have a symmetrical posture. That is, when the unlocking means releases the first locking claw from the locking portion, the magazine is spring-biased in the discharging direction and is discharged by the spring means. At this time, since the first locking claws are held in a position to be separated from the magazine, the second locking claws having a symmetrical position are close to the magazine. As a result, the second locking claw is locked to the locking portion of the ejected magazine.
In this way, the magazine completes discharging at a certain position and stops. After that, when the unlocking operation by the unlocking means is released, the interlocking urging means causes the first locking claw to move to the attitude of approaching the magazine again, and the second locking claw moves according to the attitude. It is held in a position away from the magazine. Accordingly, the second locking claw is released from the locking portion, and the magazine which has been discharged and stopped by the predetermined amount is smoothly taken out.

Embodiment FIG. 1 is a longitudinal sectional view showing the structure of a locking mechanism 3 which is an embodiment of the present invention, and FIG. 2 is a section line II-I of FIG.
It is the sectional view seen from I. The magazine 1 is mounted on a magazine holder 2 and locked by a locking mechanism 3. When the locked state is unlocked, the magazine 1 is ejected from the magazine holder 2 along the ejection direction 6b.

FIG. 3 is a simplified perspective view of the entire compact disk reproducing device. In the magazine 1, a plurality of compact discs 4 which are recording media are vertically stacked and housed in FIG. Magazine 1 is magazine holder 2
The magazine holder 2 which is inserted in the direction of the arrow 6a from the opening end 5 and has the magazine 1 mounted in this way is provided, for example, on the chassis 7 and is vertically displaceable. The compact disk 4 is selectively taken out from the magazine 1 mounted on the magazine holder 2 and reproduced by the reproducing mechanism 8 to perform a performance.

FIG. 4 is an exploded perspective view showing the locking mechanism 3, and FIG. 5 is an exploded perspective view showing the magazine 1, the magazine holder 2 and the chassis 7. With reference to FIGS. 1 to 5, the locking mechanism 3 includes a first lock lever 101 having a first locking claw 100.
A second lock lever 103 having a second locking claw 102, an interlocking biasing member 104 for biasing the lock levers 101, 103 in interlocking manner, and a lock releasing member 105 for unlocking the locked state. . The first lock lever 101 and the second lock lever 103 are arranged to face each other along the magazine ejection direction 6b, and are formed as a pair of insertion holes.
106a, 106b; 107a, 107b, the bottom plate 27 of the magazine holder 2
Shaft portion 10 that is axially fixed to the bracket 49 that projects downward from the
Eight is passed. Thus, the lock levers 10 are provided around the shaft portion 108 having an axis parallel to the direction (compact disc ejection direction 22) perpendicular to the insertion direction 6a of the magazine 1.
1,103 is supported so that it can be angularly displaced.

The interlocking biasing member 104 is a first member provided around the shaft portion 108.
A spring 109, a second spring 110, a pressing piece 112 formed on the first lock lever 101, and an abutting portion 113 formed of an inclined surface formed on the second rock lever 103 facing the pressing piece 112. To do. The first spring 109 is a spring for urging the first lock lever 101 toward the bottom plate 27 of the magazine holder 2, one end of which is fixed to the bottom plate 27 and the other end of which is fixed to the first lock lever 101. It The second spring 110
Is the second lock lever 103 with respect to the first lock lever 101.
Is a spring for holding in a fixed posture extending in a substantially straight line, and one end of the second spring 110 has a first lock lever 101.
Is fixed to the bottom plate 2 of the second lock lever 103 at the other end.
It is engaged with an engaging recess 111 formed in a portion that does not face 7. That is, each of the lock levers 101 and 103 is angularly displaced around the shaft portion 108 and is held in a constant posture by the second spring 110, so that the magazine 1 of the first lock lever 101 is held.
The second lock lever 103 can be interlocked with the magazine 1 so as to have a symmetrical posture with respect to the magazine 1. The symmetrical posture means the first rock lever 101.
Indicates that the second lock lever 103 is in the attitude of moving in / out of the magazine 1 in accordance with the attitude of moving in / out of the magazine 1. The pressing piece 112 is the first lock lever 101.
Function as an auxiliary member that presses the abutting portion 113 facing each other when approaching the magazine 1 and separates the second lock lever 103 from the magazine 1.

The first locking claw 100 formed at a portion of the first lock lever 101 facing the bottom plate 27 of the magazine holder 2 has an inclined surface 114 inclined upward along the insertion direction 6a of the magazine 1.
And a locking surface 115 formed on the downstream side in the insertion direction 6 of the inclined surface 114, and the first opening 116 formed in the bottom plate 27.
It is possible to project inward of the magazine holder 2 via. A recess 117 is formed at the downstream end of the first lock lever 101 in the insertion direction 6a, and the recess 117 is inclined upward as it goes to the side opposite to the reproducing mechanism 8 (right side in FIG. 4). It has a lock release surface 118. On the other hand, with respect to the shaft portion 108, the second locking claw 102 formed at a portion of the second lock lever 103 located on the upstream side in the insertion direction 6a, that is, on the downstream side in the magazine ejection direction, facing the bottom plate 27 is
The inclined surface 119 that is inclined upward along a and the inclined surface 119
And a locking surface 120 formed at the downstream end in the insertion direction 6a of
The magazine holder 2 can be projected inward through a second opening 121 formed in the bottom plate 27.

The lock releasing member 105 has a lock releasing protrusion 17 that can be fitted in the recess 117, a moving piece 18 to which the lock releasing protrusion 17 is fixed, and an abutting piece 19.

The bottom 68 of the magazine 1 is formed with a locking recess 20 into which the first locking claw 100 and the second locking claw 102 are fitted and locked. In the locked state where the magazine 1 is mounted in the magazine holder 2, the locking surface 115 of the first locking claw 100 contacts the locking surface 21 of the locking recess 20 on the downstream side in the insertion direction 6a. In the locked state, the compact disc 4 is ejected from the magazine 1 to the reproduction mechanism 8 along the ejection direction 22 which is perpendicular to the insertion direction 6a in the horizontal plane.

On the other hand, when the lock releasing member 105 is moved to unlock the locked state as described later, the lock in the locking recess 20 by the first locking claw is released, and the magazine 1 is ejected in the magazine ejection direction 6b. Is discharged along with. At this time, in the present embodiment, the second locking claw 102 is located in the locking recess 2
Fit in 0. That is, the locking surface 120 of the second locking claw 102 contacts the locking surface 21 of the locking recess 20 and the magazine 1 is temporarily stopped at the ejection completion position. After that, the lock release member 10
With the return of 5 to the initial position, the first lock lever 101 is urged toward the bottom plate 27 of the magazine holder 2, and the second lock lever 103 interlocked with the symmetrical posture is separated from the bottom plate 27, and the second lock lever 103 is moved. The locked state of the locking recess 20 by the pawl 102 is released. In this way, the magazine 1 can be smoothly taken out after being discharged by a constant discharge amount.

FIG. 6 is a simplified plan view of the magazine 1 and the magazine holder 2. The magazine 1 is provided with a discharge piece 23 for discharging the disk for each compact disk 4. The ejection piece 23 has an arcuate recess 24 that abuts against the peripheral edge of the disk 4 and pushes it, and the ejection piece 23 has a protrusion 25 protruding to the outside of the magazine 1. The protrusion 25 is a side wall of the magazine 1.
It is guided by a guide hole 26 formed in 1a and extending in parallel along the disc discharge direction 22.

The bottom plate 27 of the magazine holder 2 is provided with a slide plate 28 on its lower surface side and a swing plate 30 swingably provided on the slide plate 28 by a pin 29. A guide hole 31 is formed in the slide plate 28, and the guide hole 31 is guided by a guide pin 32 provided on the bottom plate 27 so as to be movable parallel to the insertion direction 6a.

FIG. 7 is a perspective view showing the slide plate 28 and the swing plate 30. The slide plate 28 is moved by the spring 33 in the magazine ejection direction 6b.
It is spring-biased (upward in FIG. 6). The slide plate 28 has an abutting protrusion 34 protruding upward at the downstream end in the insertion direction 6a. When the magazine 1 is inserted along the inserting direction 6a, the abutting protrusion 34 abuts on the side wall 1a of the magazine 1 and the magazine 1 is further pushed in the inserting direction 6a, whereby the spring force of the spring 33 is increased. It moves together with the magazine 1 in the insertion direction 6a against the force. The slide plate 28 and the swing plate
30 is pivotally fixed by a pin 29, one end of a torsion spring 39 inserted into the pin 29 is locked to the slide plate 28, and the other end is locked to the swing plate 30. Thus the swing plate 30
Is spring biased in a direction 40 away from the slide plate 28.

An arcuate guide hole 35 centered on the axis of the pin 29 is formed in the slide plate 28, and the swing plate 30 includes:
A pin 36 which is inserted into the guide hole 35 and is guided is set upright. The oscillating plate 30 has a general shape of numeral "7", and has a guide hole 37 through which a pin 38 erected on the bottom plate 27 is inserted. The guide hole 37 is continuous with an oblique portion 37a provided so that the swing plate 30 rotates in a direction 40 away from the slide plate 28 as the magazine 1 moves in the insertion direction 6a, and the portion 37a. However, the swing plate 30 has a play portion 37b for allowing the swing plate 30 to rotate about the pin 29 when the mounting of the magazine 1 in the magazine holder 2 is completed.

The swing plate 30 also includes a ceiling plate 2a of the magazine holder 2.
The aligning piece 42 extended so as to reach the guide is provided upright, and the upper end of the aligning piece 42 is guided by a guide hole 43 (see FIG. 5) formed in the ceiling plate 2a of the magazine holder 2. To be done. The bottom plate 27 is formed with a through hole 44 for enabling the movement of the aligning pieces 42, and a through hole 45 for allowing the abutting protrusion 34 to project upward from the bottom plate 27 and be movable. It In the state where the rocking plate 30 is in the rest position before inserting the magazine shown in FIG. 6, the aligning piece 42 is the ejecting piece of the magazine 1.
With respect to the protrusion 25 formed on 23, the protrusion 25 is located outside the final moving position after the completion of disk ejection, that is, closer to the reproducing mechanism 8. The aligning piece 42 is located downstream of the contact projection 34 in the insertion direction 6a (downward in FIG. 6). The slide plate 28, the oscillating plate 30, the spring 33, etc. constitute a spring means for urging the magazine 1 in the ejection direction.

FIG. 8 is a plan view around the locking mechanism 3. A parallel guide hole 51 is formed in the moving piece 18 of the lock releasing member 105 along the disk discharge direction 22. The guide hole 51 has a bottom plate 27.
The pin 52 which is erected below the pin is inserted, whereby the moving piece 18 can be displaced parallel to the discharge direction 22. The spring 53 biases the moving piece 18 toward the downstream side (left side in FIG. 8) in the discharging direction 22.

A movable body 56 shown in FIG. 4 is provided on a side wall 55 (see FIG. 5) on the side opposite to the open end 5 of the magazine holder 2. The moving body 56 has a guide hole 57 along the discharge direction 22,
A guide protrusion 58 fixed to the side wall 55 is inserted, whereby the moving body 56 can move parallel to the discharge direction 22. The moving body 56 has a pair of driving pieces 60, 61 on the front and rear sides in the discharging direction 22. One driving piece 60 is located downstream of the contact piece 19 of the lock releasing member 105 in the discharging direction 22 (left side in FIG. 8). The other driving piece 61 is the protrusion 25 of the aligning piece 42 and the discharging piece 23.
It is located upstream of the discharge direction 22. Therefore, when the moving body 56 moves in the discharge direction 22, the drive piece 61 is aligned.
42 is moved in the discharging direction 22, and the projection 25, that is, one of the discharging pieces 23 is allowed to move in the discharging direction 22, and one compact disk 4 is discharged and supplied to the regenerating mechanism 8.

A rack 62 is formed on the moving body 56. The rack
A pinion 63 meshes with 62 and is connected to a worm wheel 65 via a gear train 64. Motor M1 drives worm 66,
This drives the worm wheel 65 to rotate and
56 is driven along the discharge direction 22. Detection switch S1, S
2 detects the extreme end position of the moving body 52 for discharging and storing the compact disc 4, and the motor M1 is controlled by the detection signals from the detection switches S1 and S2. Moving body 56
When the motor M1 is driven with the detection switch S1 at the upstream end in the discharge direction 22, the moving body 56 is moved to the downstream side in the discharge direction 22 and is compact at the downstream end. When the discharge of the disk 4 is completed and the movement position of the downstream side end portion in the discharge direction is detected by the detection switch S2,
The motor M1 is rotated in the reverse direction, the moving body 56 is moved to the upstream side in the discharging direction 22, and the detection switch S1 returns until the rest position at the initial stage of magazine insertion completion is detected.

A detection switch S3 (see FIG. 5) is provided near the bottom plate 27 of the magazine holder 2 to detect that the magazine 1 has been ejected from the magazine holder 2 in response to the unlocking operation. According to the detection signal from the detection switch S3, the drive of the moving body 56 for moving the lock releasing member 105 is controlled as described later.

Hereinafter, the locking operation and the like accompanying the insertion of the magazine 1 will be described. FIG. 6 described above shows a state before the magazine 1 is inserted into the magazine holder 2, and FIG. 9 shows the magazine 1
Is inserted in the magazine holder 2 and the insertion is completed, and FIG. 10 is a side view seen from the side of the moving body 56 in FIG. Further, FIG. 11 is a side view for explaining the aligning operation of the protrusion 25, and FIG. 12 is a sectional view for explaining the locking operation by the locking mechanism 3. First, when inserting the magazine 1 in the insertion direction 6a in the state shown in FIG.
Before the magazine 1 abuts the abutment protrusion 34 of the slide plate 28, as shown in FIG. 11 (1), the protrusion of the magazine 1
It is assumed that 25 is not aligned with the initial position L of the movable section M. At this time, the alignment piece 42 is positioned outside the final movement position R of the movable section M of the protrusion 25 (left side in FIG. 11 (1)).

When the insertion of the magazine 1 in the insertion direction 6a is continued, the side wall 1a of the magazine 1 abuts the abutment protrusion 34, and the magazine 1
When the slide plate 28 is inserted, the slide plate 28 starts moving against the spring force of the spring 33, and at the same time, the swing plate 30 starts moving against the spring force of the torsion spring 39. At this time, although the magazine 1 contacts the contact projection 34, the alignment piece 42 is located downstream of the contact projection 34 in the insertion direction 6a as described above, so that the side wall 1a of the magazine 1 is aligned with the alignment piece 42. There is no contact.

The magazine 1 is further inserted and the slide plate 28 is inserted.
By moving to 6a, the oscillating plate 30 is angularly displaced around the pin 29 in the direction of the arrow 40 in FIG. 7, whereby the aligning piece 42 is shown in FIG. 11 (2). In this way, the protrusion 25 is moved in the direction from the final moving position R of the movable section M toward the initial moving position L and is aligned.

When the magazine 1 is further inserted into the magazine holder 2,
The locking recess 20 formed in the bottom 68 of the magazine 1 approaches the locking mechanism 3. In the locking mechanism 3, the first spring
By the spring bias by 109, the first locking claw 100 of the first lock lever 101 projects toward the inside of the magazine holder 2, while the second spring 110 holds the first locking claw 100 in a symmetrical posture. The second locking claw 102 of the second lock lever 103 does not project inward of the magazine holder 2. Therefore, the locking recess 20 of the inserted magazine 1 is not locked by the second locking claw 102 as shown in FIG. Inclined surface 11 of the first locking claw 100
Touch 4. Therefore, the first lock lever 101 is the first
It is displaced downward against the spring force of the spring 109.

When the magazine 1 is brought to the final insertion position, as shown in FIG. 12 (2), the first locking claw 100 is fitted into the locking recess 20 by the spring bias of the first spring 109. Put in. Then, when the magazine 1 is released, the contact force 34 of the slide plate 28 remains in contact with the side wall 1a of the magazine 1 due to the spring force of the spring 33, and the magazine 1 moves by the spring 33 in the magazine discharge direction 6b. The spring is energized. As a result, the locking surface 115 of the first locking claw 100 and the locking surface 21 of the locking recess 20 come into contact with each other, and thus the locked state shown in FIG. 9 is achieved. The structure of the locking recess 20 and the first locking claw 100 as described above has excellent durability and can be used for a long period of time without causing wear due to frequent use. It has excellent durability.

Thus, when the magazine 1 is inserted into the magazine holder 2 and the insertion state is finished, the magazine holder 2, that is, the magazine 1 is moved up and down by the elevating means 70 described later, and the compact disc 4 to be ejected is inserted into the reproducing mechanism 8. When brought to the mouth, it stops moving up and down and stands still. Then the motor M1
Is driven, and as a result, the drive piece 61 of the moving body 56 is aligned.
42 is moved in the ejecting direction 22, one desired compact disk 4 is ejected and inserted into the reproducing mechanism 8. During such a discharging operation of the compact disc 4, the discharging piece 23
The aligning piece 42 is pushed by the protrusion 25 of the and the swing plate 30 is angularly displaced about the pin 29.

After the compact disc 4 is supplied to the regeneration mechanism 8 in this way, the position of the most downstream end of the moving body 56 in the discharging direction is detected by the detection switch S2 as described above. Therefore, the motor M1 rotates in the reverse direction and the moving body 56 moves to the initial rest position,
It returns until it is detected by the detection switch S1. At this time, the oscillating plate 30 is returned to the initial position of magazine insertion completion while pushing back the projection 25 of the ejection piece 23 in the direction 40 away from the slide plate 28 by the spring force of the torsion spring 39.

When the reproduction by the reproduction mechanism 8 of the compact disk 4 is completed, the compact disk 4 that has finished the performance is returned to the magazine 1, and thereafter, the magazine holder 2 operates the elevating means 70 to move the next compact disk 4. Ascending and descending for discharging, the above operation is repeated.

Next, the ejection of the magazine 1 accompanying the unlocking operation of the locking mechanism 3 will be described. When the moving body 56 is detected by the detection switch S1 and is in the rest position, the drive piece 60 is the lock release member.
It is located downstream of the contact piece 19 of the 105 in the discharge direction 22.

When ejecting the magazine 1 from the magazine holder 2, the magazine holder 2 is displaced by the elevating means 70 to a position higher than the position where the ejecting / supplying operation of the compact disc 4 to the reproducing mechanism 8 is performed. In this way, after the magazine holder 2 is brought to the upper limit position where the magazine 1 should be discharged, the motor M1 is driven and the moving body 56 moves in the discharging direction.
It is driven upstream of 22 (to the right in FIGS. 4 and 8). Therefore, the drive piece 60 of the moving body 56 is
The contact piece 19 of 5 is moved upstream in the discharge direction 22 against the spring force of the spring 53. As a result, as shown in FIG.
The lock releasing piece 17 of the lock releasing member 105 contacts the inclined surface 118 formed in the recess 117 of the first lock lever 101.

Along with the movement of the lock release piece 17 toward the upstream side in the discharging direction 22, the first lock lever 101 resists the spring force of the first spring 109, and the first locking claw 100 moves downward around the shaft portion 108. Angular displacement. That is, from the locked state shown in FIG. 14 (1) to the first locking claw 100 as shown in FIG. 14 (2).
The locking state of the locking surface 115 of the and the locking surface 21 of the locking recess 20 of the magazine 1 is released, whereby the unlocked state is obtained. Therefore, the magazine 1 is pushed out in the magazine discharge direction 6b by the spring force of the spring 33 and the contact projection 34 of the slide plate 28. In this way, the ejection of the magazine 1 from the magazine holder 2 is started.

When the first lock lever 101 is angularly displaced downward for unlocking, the second lock lever 103 is urged by the spring 110 to interlock so that the second lock lever 103 and the first lock lever 101 have a symmetrical posture. To do. That is, the second lock lever 103 is interlocked with the attitude of approaching the magazine holder 2 in response to the attitude of the first lock lever 101 moving away from the magazine holder 2. Therefore, the second lock lever 103 is angularly displaced upward, and the second locking claw 102 is projected from the second opening 121 toward the inside of the magazine holder 2. Therefore, in the locking recess 20 of the magazine 1 discharged along the magazine discharge direction 6b, the second lock lever is provided.
The second locking claw 102 of 103 is fitted. Thus, when the magazine 1 is discharged by a constant discharge amount of the distance W from the first opening 116 to the second opening 121, that is, the distance W from the first locking claw 100 to the second locking claw 102, the magazine 1 is temporarily stopped. To do. FIG. 14 (3) shows the state where the magazine 1 is locked by the second locking claws 102, and shows that the magazine 1 is stopped at the discharge completion position.

After that, when the detection switch S3 detects that the magazine 1 has been discharged to the discharge completion position, the motor M1 is driven in the reverse direction, and the moving body 56 is driven to the downstream side in the discharge direction 22. Therefore, the movement of the lock releasing member 105 by the driving piece 60 of the moving body 56 is released, and the lock releasing member 105 is returned to the initial position by the spring force of the spring 53. That is, the lock releasing piece 17 of the lock releasing member 105 is released from the inclined surface 118 of the recess 117 of the first lock lever 101, and as a result, the first lock lever 101 is caused by the spring force of the first spring 109 to cause the first locking claw. 100 is angularly displaced so as to urge upward.

Along with the angular displacement of the first lock lever 101, the pressing piece 1
The second lock lever 103 pushes the opposing contact portion 113 so that the second spring 110 takes a symmetrical posture.
Interlock. As a result, as shown in FIG. 14 (4), the second lock lever 103 is angularly displaced so as to urge the second locking claw 102 downward, so that the locking recess 20 of the stopped magazine 1 is removed. The second locking claw 102 is released. Therefore,
Since the magazine 1 stopped at the discharging completion position is not locked, it can be taken out smoothly. In addition,
After releasing the second locking claw 102 from the locking recess, the spring force of the spring 33 does not act on the magazine. Thus, according to the present embodiment, due to the simple structure of the locking mechanism 3, it is possible to smoothly take out the magazine after ejecting the magazine at a constant ejection amount in the unlocking operation.

FIG. 15 is a perspective view showing a simplified structure of the elevating means 70 for elevating the magazine holder 2. A bracket 72 having screw holes is formed in the magazine holder 2, and the screw holes formed in the bracket 72 are screwed into three screw rods 73 provided in the chassis 7. Screw rod 73 is gear train 74
It is rotationally driven by a motor M2 via. In this way, the magazine holder 2 can be moved up and down while the compact disc 4 stored in the magazine 1 is held horizontally.

Although the present embodiment has been described with reference to a disk reproducing device in which the magazine holder moves up and down, in addition to this, the magazine holder to which the magazine is mounted is fixedly arranged, and the disk insertion / ejection port of the magazine is mounted. A disk reproducing apparatus having a structure in which a frame that slides along the stacking direction of the compact disks is provided so that the compact disk taken out from the magazine is guided to the reproducing mechanism can be suitably implemented.

Effect of the Invention According to the present invention, it is possible to realize a configuration in which the durability of the locking portion of the magazine and the locking claw provided on the magazine holder is improved, and the magazine can be locked securely in the magazine holder. it can.

Further, the magazine ejected after unlocking by the first locking claws is stopped at a certain discharging completion position by the second locking claws which are paired with the first locking claws and interlock with each other. Therefore, with a simple structure, the magazine can be discharged smoothly after being discharged with a constant discharge amount.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing the structure of a locking mechanism 3 which is an embodiment of the present invention, FIG. 2 is a sectional view taken along the section line II-II in FIG. 1, and FIG. FIG. 4 is an exploded perspective view showing the locking mechanism 3; FIG. 5 is an exploded perspective view showing a magazine 1, a magazine holder 2 and a chassis 7; FIG. FIG. 7 is a simplified plan view showing a state before being inserted into the holder 2, FIG. 7 is a perspective view showing a slide plate 28 and a swing plate 30,
FIG. 8 is a plan view around the locking mechanism 3, FIG. 9 is a simplified plan view showing a state in which the magazine 1 is inserted into the magazine holder 2 and the insertion is completed, and FIG. 10 is a state in FIG. FIG. 11 is a side view seen from the moving body 56 side, FIG. 11 is a side view for explaining the alignment operation of the protrusions 25, FIG. 12 is a sectional view for explaining the locking operation by the locking mechanism 3, and FIG. Mechanism 3
A simplified plan view for explaining the unlocking operation in
FIG. 14 is a sectional view for explaining the unlocking operation by the locking mechanism 3, and FIG. 15 is a lifting means 70 for lifting the magazine holder 2.
It is a perspective view which shows the structure of. 1 ... Magazine, 2 ... Magazine holder, 3 ... Locking mechanism, 4 ... Compact disk, 8 ... Reproducing mechanism, 17 ...
… Lock unlocking piece, 19 …… Abutting piece, 20 …… Locking recess, 28…
… Sliding plate, 30 …… Swing plate, 33 …… Spring, 56 …… Moving body, 60 …… Drive piece, 100 …… First locking claw, 101 …… First lock lever, 102 …… Second engagement Pawl, 103 ... Second lock lever, 104 ... Interlocking biasing member, 105 ... Lock releasing member,
108 ... Shaft, 109 ... First spring, 110 ... Second spring, 117
...... Concave, 118 ...... Lock release surface, S1 to S3 ...... Detection switch, M1 ...... Motor,

Claims (1)

[Scope of utility model registration request] 1. A locking mechanism of a recording medium storing magazine, wherein a magazine storing a recording medium is attached to a magazine holder, wherein a locking portion is formed in the magazine, and the magazine holder has a magazine A first locking claw that is angularly displaced about an axis perpendicular to the discharging direction and locks with the locking portion in a state where the magazine is mounted on the magazine holder; and a first locking claw located downstream of the axis with respect to the discharging direction. A second locking claw that is angularly displaced around the axis and locks with the locking part in a state where the magazine is ejected from the magazine holder; and a spring biasing the first locking claw toward the magazine, and Depending on the attitude of the first locking claw with respect to the magazine,
Interlocking biasing means for interlockingly biasing the second locking claw so as to be in a symmetrical posture, and unlocking means for unlocking the first locking claw by removing it from the locking part. A lock mechanism for the magazine for storing the recording medium, the spring mechanism urging the magazine in the ejection direction.