JPH0749655Y2 - Cassette auto changer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in the following order.

A Industrial field of use B Outline of the device C Conventional technology D Problems to be solved by the device E Means for solving the problems F Action G Example G ₁ Overall description of cassette automatic loading device (Fig. 4) structure description - Figure 5) G ₂ structural description of cassette insertion and ejection device (operation of Figures 3A-Figure 5) G ₃ cassette insertion and ejection device (Figures 3A, second 4C view) G ₄ eject prohibition mechanism ( Figures 1A-FIG. 2B, the use of the Figure 3B and Figure 4A) G ₅ eject operation (Fig. 1A-FIG. 2B prohibition mechanism, Figure 3B and Figure 4A) H devised effect a industry Field of the Invention The present invention is a cassette auto changer for sequentially and automatically loading a large number of video cassettes into a video tape recorder in order to perform continuous video reproduction for a long time.

B Outline of the Invention The present invention provides a cassette insertion / ejection mechanism capable of inserting and ejecting a cassette from both the operator side and the cassette transfer machine side in a cassette holding chamber such as a cassette storage shelf of a cassette autochanger, and The ejecting operation of the cassette to the operator side is carried out by the eject button, and in the cassette reserving device, the cassette detecting member for detecting the presence or absence of the cassette in the cassette reserving chamber and the eject button pushing operation prohibited by the detection member are prohibited. By providing a stop member that prevents the operator from accidentally ejecting the cassette in the cassette holding chamber to the cassette transfer machine side and the operator mistakenly ejecting the cassette when the cassette is not held in the cassette holding chamber. This is to prevent it.

C Prior Art As an example of a prior application filed by the applicant of the present invention for an automatic cassette loading apparatus for a video tape recorder, there is, for example, Japanese Patent Application No. 61-15258.

This prior application example has a cassette holding chamber in which a pair of openings for inserting and ejecting a cassette are provided at both ends of the operator side and the cassette transfer machine side, and the cassette holding chamber is selectively inserted through the pair of openings. Pair of cassette ejection members having a pair of cassette ejection members pushed by the cassette to be moved from the backward movement position to the forward movement position and a spring for moving the pair of cassette ejection members from the forward movement position to the backward movement position A mechanism is provided to lock the pair of cassette ejection members in the forward movement position, respectively, and when one lock member locks one cassette ejection member, the other cassette ejection member is disengaged from the cassette. From one position to the engaged position, and when one of the lock members unlocks the other cassette eject member, the other cassette eject member is closed. A pair of lock and unlock mechanisms having a pair of control members for retracting from the engagement position to the non-engagement position with respect to the door, an eject button is provided in the vicinity of the opening on the operator side, and the eject button is restored. By pushing from the moving position to the forward position, the lock of the one cassette discharging member at the forward position by the one locking member is released, and the cassette in the cassette holding chamber is moved to the operator side by the cassette discharging member. It is configured to be discharged to.

In this prior application example, a cassette can be inserted into and ejected from either the operator side or the cassette transfer machine side into the cassette holding chamber, and the cassette ejection operation to the operator side is performed by pushing the eject button. Is.

However, according to this prior application, the cassette in the cassette holding chamber is ejected to the cassette transfer device side, and the cassette transfer device automatically loads the cassette into the recording / reproducing apparatus (access operation). If the operator accidentally presses the eject button while) is being performed, the cassette ejector on the cassette transporter side for ejecting the cassette to the operator side is returned to the engaging position with respect to the cassette. The cassette is ejected to the moving position, and afterwards, even if an attempt is made to return the recorded and reproduced cassette to the cassette holding chamber by the cassette transfer machine, the cassette will move to the engaging position for the cassette. It collided with the cassette ejection member on the side of the cassette transfer machine that is being carried in, Set there is an inconvenience that can not be returned to the cassette holding chamber.

The present invention makes it possible to mechanically prohibit the pushing operation of the eject button when the cassette in the cassette holding chamber is ejected to the cassette transfer machine side.

E Means for Solving Problems The present invention provides a shelf device having a plurality of cassette storage chambers for storing cassettes, a plurality of recording or reproducing devices into which the cassettes are selectively inserted, and a plurality of the cassette storages. In a cassette autochanger equipped with a cassette transfer device for delivering and transporting cassettes between a chamber and the recording or reproducing apparatus, the cassette reserving chamber has a pair of openings for inserting and ejecting cassettes on the operator side and the cassette side. It is provided at both ends of the transfer machine side and is movable between a forward movement position for storing a cassette in the cassette storage chamber and a return position where the cassette is inserted into the cassette storage chamber or discharged from the cassette storage chamber. The cassette locking part is attached to the engaging position with respect to the cassette which is attached and selectively inserted into the cassette holding chamber from the pair of openings. The cassette side, the cassette side is selectively pushed by the inserted cassette so as to be selectively moved from the return position to the forward movement position. A pair of cassette discharge members that are arranged opposite to each other on the transfer machine side and move in opposite directions, and a biasing member that biases the pair of cassette discharge members from the forward movement position to the backward movement position. A cassette insertion and ejection mechanism having
A pair of lock members for locking the pair of cassette ejection members moved to the forward movement position by selectively pushing the cassette locking portion by the inserted cassette, and one locking member When one of the cassette ejecting members is locked, the cassette locking portion of the other cassette ejecting member is inserted from the non-engaging position to the cassette to the engaging position, and the one locking member locks the one cassette ejecting member. And a lock and unlock mechanism having a pair of control members for retracting the cassette locking portion of the other cassette discharge member from the engagement position with respect to the cassette to the non-engagement position when releasing the operator. The cassette ejector on the side of the cassette transfer machine, which is provided near the opening on the side of the cassette, holds the cassette stored in the cassette storage chamber. In order to discharge to the operator side by the above, the one lock member releases the lock of the cassette discharge member on the cassette transfer side at the forward movement position, and the cassette locking portion of the cassette discharge member is engaged with the cassette. The eject button which is moved from the pushing start position to the pushing completion position so as to be moved to the return position while being inserted in the position, the cassette detection member for detecting the presence or absence of the cassette in the cassette storage shelf, and the cassette. Based on the detection result of the detection member, the eject button is movably attached between a predetermined position on the movement track from the pressing start position to the pressing completion position and a predetermined position outside the movement track, and the cassette holding When the cassette is held in the room, the eject button moves from the pushing start position to the pushing complete position. And the ejected cassette is ejected to the operator side, the eject button is completed when the ejected button is moved to a predetermined position outside the movement locus and the cassette is not held in the cassette holding chamber. A cassette having a stop member that is moved to a predetermined position on the movement track in order to prohibit the movement to the position and maintain the state of the cassette insertion / ejection mechanism and the lock / unlock mechanism of the cassette holding chamber. It is an autochanger.

The present invention is based on the detection of the absence of the cassette by the cassette detection member when the cassette is not held in the cassette holding chamber due to the fact that the cassette in the cassette holding chamber is discharged to the cassette transfer machine side. Will mechanically prohibit the pushing operation of the eject button.

G Embodiment An embodiment in which the present invention is applied to a cassette auto changer of a video tape recorder will be described below with reference to the drawings.

G ₁ First, the entire cassette automatic loading device 1 will be described with reference to FIGS. 6 and 7.

A shelf frame 3 which is a plurality of shelf devices provided with a plurality of upper and lower cassette storage shelves 2 is a moving space 5 of a cassette transfer machine 4.
Are arranged in two rows along both sides of. In addition, a video tape recorder 6 which is a plurality of recording or reproducing devices which are vertically stacked so as to face the front of the moving space 5 is provided. The cassette transporter 4 is guided by a guide mechanism composed of a vertical guide rail 7 and one of upper and lower horizontal guide rails 8 for guiding the vertical guide rail 7, and the cassette transfer machine 4 is moved in the movement space 5 in the XY directions (up and down directions). , Left and right).

A plurality of upper and lower cassette storage shelves 2 of each shelf frame 3 are arranged in a horizontal and horizontal cassette holding chamber 10, and the cassette transfer machine 4 also has a pair of upper and lower cassette holding chambers 11. It is provided. A large number of video cassettes (hereinafter referred to as cassettes) 12 which are cassettes are horizontally inserted and reserved in a large number of cassette storage chambers 10.

Then, among the large number of cassettes 12 held in the large number of cassette holding chambers 10, sequentially designated cassettes 12 are sequentially taken out from the cassette holding chamber 10 by the cassette transfer machine 4, and a plurality of video tape recorders are recorded. 6 are sequentially and automatically loaded automatically, and continuous video reproduction or the like is performed for a long time.

By the way, in this cassette automatic loading apparatus 1, for each cassette storage chamber 10 of a specific shelf frame 3a or all shelf frames 3, arrow A, from both directions of the operator side 13 and the cassette transfer machine side 14, is shown in FIG. It is configured so that the cassette 12 can be taken in and out (in particular, the cassette can be automatically ejected in the directions of arrows A and B) in the direction indicated by B.

G ₂ Next, the structure of the cassette insertion / ejection device 16 provided in the cassette holding chamber 10 will be described with reference to FIGS. 3A to 5.

First, the horizontal cassette storage shelves 2 are made of sheet metal stamping members because it is necessary to have high strength.
A pair of openings 17 and 18 for inserting and ejecting the cassette 12 are provided at both ends of an operator side 13 and a cassette transfer machine side 14 of a cassette holding chamber 10 formed horizontally between the upper and lower sides of each cassette storage shelf 2. Has been. The cassette insertion / ejection device 16 is attached to the lower surface 2a of each cassette storage shelf 2, and is configured to perform insertion positioning and automatic ejection of the cassette 12 inserted on the upper surface 2b of each cassette storage shelf 2. .

Next, the cassette insertion / ejection device 16 includes a pair of cassette ejection members 19a and 19b and a pair of springs that are biasing members for returning.
A pair of cassette ejection mechanisms 21a and 21b having 20a and 20b,
A pair of lock members 22a, 22b and a pair of control members 23a, 23b
And a pair of lock and unlock mechanisms 24a and 24b having The pair of cassette ejecting mechanisms 21a and 21b and the lock and unlock mechanisms 24a and 24b are configured by symmetrically arranging the same structural parts.

First, a pair of guide rails 26a, 26b made of a low friction material such as synthetic resin are parallel to both sides of the lower surface 2a of the cassette storage shelf 2 and are screwed by screws 27 along the entire length of the cassette storage shelf 2. It has been stopped. These guide rails 26a, 26b are provided with guide grooves 28 over substantially their entire length.
Is formed horizontally.

A plurality of convex portions 29 are integrally formed and provided on the upper surfaces of both guide rails 26a and 26b.
29 is projected at a slight height above the upper surface 2b of the cassette storage 2 from a plurality of through holes 30 provided in the cassette storage shelf 2,
The cassette 12 that is inserted and retained on the upper surface 2b of the cassette storage shelf 2 is configured to slide extremely smoothly on the convex portion 29.

Next, each of the cassette ejection members 19a and 19b has a cassette locking piece 32 which is a cassette locking portion, and a pair of sliding members 33a and 3b.
3b is rotatably pivoted up and down via a fulcrum pin 34, and is urged to rotate in the direction of arrow a in FIG. Both sliding members 33a, 33b are slidably engaged in both guide grooves 28 of both guide rails 26a, 26b by a pair of guide pins 36 mounted on both sides thereof, and are composed of tension springs. The springs 20a and 20b are slidingly biased in the directions of arrows b and b'in FIG. 4A, respectively. Both lock members 22a and 22b are rotatably supported by a fulcrum pin 37, and are urged to rotate in the direction of arrow c in FIG. A lock portion 40, which is a roller for locking the locked portions 39 of the sliding members 33a and 33b, is attached to the lock members 22a and 22b. Both control members 23a, 23b are a pair of long holes
41 and the guide pin 42, the arrows b and b'in FIG. 2A are shown.
Slidable in each direction, and each of them has a long hole 43 and a pin 44.
It is connected to both lock members 22a, 22 via. A pair of rollers 45 pivotally attached to both cassette ejecting members 19a and 19b are pressed by a pair of cams 46 integrally provided on both control members 23a and 23b in the direction of arrow a in FIG. 3A.

A pair of eject rods 51a and 51b are slidable on both sides of the cassette storage chamber 10 in the directions of arrows d and e in FIGS. 3B and 3C via a pair of elongated holes 52 and guide pins 53, respectively. The eject rods 51a and 51b are connected to the lock members 22a and 22b through a long hole 54 and a pin 55, respectively. The eject button 56 is attached to the operator side 13 on one side of each cassette holding chamber 10 by a button rod 57, and the button rod 57, one eject rod 51a, and the eject rod 51a are linked by a link 58. It is linked. On the other side of each cassette storage chamber 10, an eject lever 59 is rotatably attached to the cassette transfer machine side 14 via a fulcrum pin 60, and the eject lever 59 is connected to the other eject rod 51b. Has been done.

G ₃ Next, cassette insertion and ejection device configured as described above
The operation of 16 will be described with reference to FIGS. 3A to 4C.

First, the operation of inserting the cassette 12 in the direction of arrow A from the opening 17 on the operator side 13 of the cassette holding chamber 10 will be described.

At this time, as shown in FIGS. 3B and 4B, before insertion of the cassette, in a state in which the cassette locking piece 32 of the one cassette ejection member 19a is inserted into the engaging position (lowering position) with respect to the cassette 12, The cassette ejecting member 19a is moved to the returning position in the direction of the arrow b, and the other cassette ejecting member 19a is moved.
b is moved to the forward movement position in the direction of arrow b and locked. The other cassette discharging member 19b is rotated in the forward movement position in the direction of arrow a in FIG. 3B, and the cassette locking piece 32 is retracted to the non-engaging position (raising position) with respect to the cassette 12.

Next, as shown in FIGS. 3B and 4B, the cassette 12 is opened.
When it is inserted horizontally from 17 into the cassette holding chamber 10 in the direction of arrow A, the front end 12a of the cassette 12 comes into contact with the cassette locking piece 32 of one cassette ejecting member 19a, which is indicated by arrow b '.
The springs 20a and 20b in the direction.

Then, as shown in FIGS. 3A and 4A, at the moment when the cassette 12 is completely inserted into the cassette holding chamber 10 and one cassette ejection member 19a is moved to the forward movement position in the direction of the arrow b ', One of the locking members 22a is rotated by the spring 38 in the direction of arrow c in FIG.
The locked portion 39 of 33a is locked to lock one cassette ejection member 19a in the forward movement position. When one locking member 22a rotates in the direction of arrow c in FIG. 4A, one control member 23a slides in the direction of arrow b in FIGS. 3A and 4A, and both cams 46 of the other control member 23a. Riding on both rollers 45 of the ejection member 19b, the other cassette ejection member 19b
Is rotated in the direction of arrow a'in FIG. 3A against the spring 35,
The cassette locking piece 32 is inserted into the engaging position (lowering position) with respect to the cassette 12.

Therefore, as shown in FIGS. 3A and 4A, at the moment when the cassette 12 is completely inserted into the cassette holding chamber 10, the front and rear ends 12a and 12b of the cassette 12 are both cassette ejecting members 19a and 1a.
It is held by the cassette locking piece 32 of 9b.

Next, the cassette 12 held in the cassette holding chamber 10
A description will be given of the operation of automatically ejecting in the direction of arrow B from the opening 17 on the operator side 13.

As shown in FIGS. 3B and 4B, when the operator pushes the eject button 56 in the direction of arrow f, one eject rod 51a is slid in the direction of arrow d via the button rod 57 and the link 58,
One of the lock members 22a is rotated in the direction of arrow c'against the spring 38. Then, the lock portion 40 is disengaged from the locked portion 39, the lock of one cassette ejecting member 19a is released, and the cassette ejecting member 19a is moved to the returning position in the arrow b direction by both springs 20a and 20b. . And immediately before the lock of one cassette ejection member 19a is released,
By rotating one locking member 22a in the direction of arrow c'in FIG. 4B, one control member 23a is slid in the direction of arrow b'in FIGS. 3B and 4B, and both cams 46 of the other control member 23a are slid in the other direction. The cassette ejection member 19b is disengaged from both rollers 45 in the direction of arrow b ',
The other cassette discharge member 19b resists the spring 35 and moves to the 3B
In the drawing, the cassette locking piece 32 is pivoted in the direction of arrow a, and is retracted to the non-engaging position again.

Therefore, the cassette locking piece 3 of one cassette ejecting member 19a
The front end 12a of the cassette 12 is pushed by 2 in the direction of arrow b, and the cassette 12 is automatically ejected from the opening 17 to the operator side 13 in the direction of arrow B.

In addition, the opening 18 on the cassette transfer machine side 14 of the cassette holding chamber 10
Operation of inserting the cassette 12 in the direction of arrow B and arrow A
The automatic ejecting action in the direction is shown in FIGS. 3C and 4C and is performed as described above.

At this time, however, the eject operation lever 62 provided in the cassette transfer machine 4 automatically ejects the cassette 12 stored in the cassette storage chamber 10 from the opening 18 on the cassette transfer machine side 14 in the direction of arrow A. Eject lever 60 to 3C
In the figure, rotate in the direction of arrow g to move the other eject rod 51.
This is done by sliding b in the direction of arrow e.

At this time, by the other cassette ejecting member 19b which is moved in the direction of the arrow b'by both springs 20a and 20b,
The cassette 12 is automatically ejected from the opening 18 in the direction of the arrow A, and the cassette 12 is instantaneously inserted into the cassette holding chamber 11 of the cassette transfer machine 4. 12 can be taken out very quickly.

G ₄ Next, referring to FIGS. 1A to 2B, 3B, and 4A,
The structure of the eject prohibiting mechanism 64 will be described.

First, as shown in FIGS. 3B and 4A, each cassette storage chamber
A cassette detecting member 65 is attached to one side of the unit 10 via a vertical fulcrum shaft 66 so as to be rotatable in the directions of arrows h and h'in FIG. 4A. The roller 6 is attached to one end 65a of the cassette detection member 65.
7 is rotatably mounted, and the cassette detection member 65 is urged to rotate in the direction of arrow h by a spring 68, which is a winding spring wound around the outer periphery of the fulcrum shaft 66, as shown by the solid line in FIG. As a result, the roller 67 is inserted into the cassette holding chamber 10. The other end 65 of the cassette detection member 65
Cassette detection sensor 69 consisting of an optical sensor by b
Is turned on and off.

Next, as shown in FIGS. 1A to 2B, 3B and 4A,
At one side of each cassette storage chamber 10, a stop member 71 is rotated in the direction of arrow i, i ′ in FIGS. 2A and 2B via a horizontal fulcrum shaft 72 on the front surface of the front plate 70 of the frame shelf 3. It is installed freely. The stop member 71 has a generally U-shaped configuration and is urged to rotate in the direction of arrow i'as shown in FIG. 2B by a spring 73 which is a winding spring wound around the outer periphery of the fulcrum shaft 72. The stop member 71 is rotated in the direction of the arrow i to eject the eject button 71 as shown in FIGS. 1A and 2A.
The rear end of the flange 56a is inserted into the movement locus of the flange 56a, and is pivoted in the direction of the arrow i'to withdraw from the movement locus of the flange 56a as shown in FIGS. 1B and 2A. There is.

Next, as shown in FIGS. 2A, 2B, 3B, and 4A,
One end 65a of the cassette detection member 65 is inserted inside the engagement piece 71 at the tip of the stop member 71 at a right angle. And
The spring force of the spring 67 is stronger than the spring force of the spring 73. A decorative plate 74 is attached to the front surface of the front plate 70.

G ₅ Next, the eject prohibition mechanism 64 configured as described above
The operation will be described with reference to FIGS. 1A to 2B, 3B and 4A.

First, as shown by the chain line in FIG. 4A, in the state where the cassette 12 is inserted and held in the cassette holding chamber 10, the roller 67 is pushed by the cassette 12 in the arrow h'direction, and the cassette detection member 65 indicates the arrow. The cassette 68 is rotated in the h'direction against the spring 68, the cassette detection sensor 69 is turned on, and the presence of the cassette is detected.

At this time, as shown in FIGS. 1B and 2B, the stop member 71 is rotated by the spring 73 in the direction of the arrow i ′, and the eject button 56 is pushed to the completion position. Press in the direction of arrow f with to move the cassette 12
Can be automatically discharged to the operator side 13.

Next, as described above, the cassette 12 in the cassette holding chamber 10
Is discharged to the cassette transfer unit side 14, and the cassette holding chamber 10
When the cassette 12 in the inside disappears, at that moment, as shown by the solid line in FIG. 4A, the cassette detection member 65 is rotated in the direction of arrow h by the spring 68, and the cassette detection sensor 69 is turned off by the other end 65b. No cassette is detected.

Then, at the same time, one end 65a of the cassette detection member 65
Contacts the engaging piece 71a of the stop member 71 and pushes it strongly in the direction of arrow h in FIG. 2A. Therefore, as shown in FIGS. 1A and 2A, the stop member 71 resists the spring 73 and the arrow i The stop member 71 is rotated in the direction to be inserted into the movement path of the flange 56a of the eject button 56.

As a result, even if the operator tries to push the eject button 56 in the direction of arrow f from the pushing start position shown by the chain line in FIG. 1A to the pushing complete position shown by the solid line in FIG. 1B, as shown by the solid line in FIG. The flange 56a of the eject button 56 is brought into contact with the stop member 71 to mechanically prohibit the eject button 56 from being completely pushed to the pushing completion position. At this time, since the operating force of the eject button 56 in the direction of arrow f in FIG. 1A is strongly received by the front plate 70 via the stop member 71, the operating force is as shown in FIGS. 3B and 4B. It is not accidentally transmitted to the one cassette ejection member 21a via the link 58 and the eject rod 51.

In short, while the cassette 12 in the cassette holding chamber 10 is ejected to the cassette transfer machine side 14 and the cassette transfer machine 4 is performing the automatic loading operation (access operation) of the cassette 12 to the video tape recorder 6, Based on the detection of the absence of the cassette by the cassette detection member 65, the stop member 71 mechanically prohibits the complete pushing operation of the eject button.

Therefore, during this period, the operator mistakenly presses the eject button 56, so that one cassette ejection member 19a for ejecting the cassette 12 to the operator side performs the above-described cassette ejection operation, and this cassette ejection member 19a.
Is in the state of FIG. 3B, and later, when the cassette 12 which has been recorded and reproduced by the video tape recorder 6 is inserted into the cassette holding chamber 10 from the other opening 18 by the cassette transfer machine 4 and is returned, The inconvenience that the cassette 12 cannot be returned to the cassette holding chamber 10 due to the collision of the cassette 12 with the cassette discharge member 19a can be prevented.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various effective modifications can be made based on the technical idea of the present invention.

Further, the present invention is not limited to a cassette storage shelf of a cassette autochanger of a video cassette, but is also a device for temporarily holding the cassette or the like in a cassette containing various record carriers, a cartridge and a cassette autochanger of a jacket, or the like. Applicable.

H Effect of the Invention The present invention is based on the detection result of no cassette by the cassette detection member when the cassette is not held in the cassette holding chamber because the cassette in the cassette holding chamber is discharged to the cassette transfer machine. In order to maintain the state of the cassette ejection mechanism and the lock / unlock mechanism of the cassette holding chamber, the stop member is moved to a predetermined position on the movement trajectory of the eject button to prohibit the pushing operation of the eject button. ing. Therefore,
Maintenance status of the cassette ejection mechanism and lock / unlock mechanism of the cassette holding chamber caused by the operator accidentally pressing the eject button while the cassette transfer device is performing the cassette automatic loading operation for the recording or reproducing device. There is a special effect that it is possible to prevent an erroneous operation such as canceling.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIGS. 1A and 1B are partially cutaway plan views of an essential part for explaining the eject prohibition operation, and FIGS. 2A and 2B are FIG. 1A. IIA-IIA arrow sectional view and FIG. 1B IIB-IIB arrow sectional view, FIG. 3A, FIG. 3B and FIG. 3C are partially cutaway side views for explaining the cassette insertion / ejection operation, FIG. 4A, FIG. 4B FIG. 4 and FIG. 4C are partially cutaway plan views of the same, FIG. 5 is a partially exploded perspective view of the same, FIG. 6 is an overall schematic plan view, and FIG. 7 is an overall schematic side view. Further, in the reference numerals used in the drawings, 10 ... cassette holding chamber 12 ... video cassette 13 ... operator side 14 ... cassette transfer side 16 ... cassette insertion / ejection device 17 ... opening 18 ... 〃 19a ...... Cassette ejection member 19b …… 〃 20a …… Spring 20b …… 〃 21a …… Cassette ejection mechanism 21b …… 〃22a …… Lock member 22b …… 〃23a …… Control member 23b …… 〃24a …… Lock and unlock Mechanism 24b …… 〃 56 …… Eject button 64 …… Eject prohibition mechanism 65 …… Cassette detection member 71 …… Stop member.

Claims (1)

[Scope of utility model registration request] 1. A shelf device having a plurality of cassette holding chambers for holding cassettes; a plurality of recording or reproducing devices into which the cassettes are selectively inserted; a plurality of cassette holding chambers and the recording or reproducing devices. In a cassette autochanger equipped with a cassette transfer machine for transferring and transporting cassettes between the cassette holding chamber, a pair of openings for inserting and ejecting the cassette are provided at both ends of the operator side and the cassette transfer side in the cassette holding chamber. The cassette is housed in the cassette holding chamber, and the cassette is movably mounted between the forward position where the cassette is inserted into the cassette holding chamber or the returning position where the cassette is discharged from the cassette holding chamber. With the cassette locking part selectively inserted at the engagement position for the cassette that is selectively inserted into the cassette storage chamber, The cassette side is opposed to the operator side and the cassette transfer machine side so that the cassette locking portion is selectively pushed by the inserted cassette and selectively moved from the return position to the forward movement position. And a cassette insertion / ejection mechanism having a pair of cassette ejection members that move in opposite directions, and an urging member that urges the pair of cassette ejection members from the forward movement position to the backward movement position. A pair of lock members for locking the pair of cassette ejection members moved to the forward movement position by selectively pushing the cassette locking portion by the inserted cassette, and one locking member When one of the cassette ejecting members is locked, the cassette engaging portion of the other cassette ejecting member is inserted from the non-engaging position with respect to the cassette to the engaging position, and Locking and unlocking having a pair of control members for retracting the cassette locking portion of the other cassette ejection member from the engagement position with respect to the cassette to the non-engagement position when the lock member releases the lock of the one cassette ejection member And a mechanism is provided, which is provided in the vicinity of the opening on the operator side and discharges the cassette held in the cassette holding chamber to the operator side by the cassette discharging member on the cassette transfer machine side, The one lock member releases the lock of the cassette discharge member on the cassette transfer side at the forward movement position, and the cassette locking portion of the cassette discharge member is inserted into the engaging position with respect to the cassette, and the return position is set. Eject button that is moved from the push start position to the push complete position so that Based on the cassette detection member that detects the presence or absence of a set and the detection result of the cassette detection member, a predetermined position on the movement locus of the ejection button from the pushing start position to the pushing completion position and a predetermined position outside the movement locus When the cassette is held in the cassette holding chamber, the eject button is allowed to move from the pushing start position to the pushing complete position, and the held cassette is In order to eject to the operator side, when it is moved to a predetermined position outside the movement locus and the cassette is not held in the cassette holding chamber, the eject button is prohibited from moving to the pushing completion position, and the cassette holding is performed. In order to maintain the state of the cassette insertion and ejection mechanism and the lock and unlock mechanism of the chamber, the transfer Cassette autochanger and a stop member which is moved to a predetermined position on the trajectory.