JPH0513343B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is a cassette attaching/detaching device which is most suitable for application to a cassette type recording/reproducing device such as a cassette type video tape recorder, and is a device for inserting a cassette into the device. This invention relates to a cassette holder which is reciprocated between a cassette insertion position and a predetermined cassette mounting position to attach and detach a cassette to and from the cassette mounting position.

[Background technology and its problems]

As is well known, in a cassette-type video tape recorder, when the cassette is installed in the cassette mounting position, the magnetic tape that is being passed through the tape loading guide etc. provided in the video tape recorder inside the cassette along the front opening of the cassette is loaded. After the cassette is installed, the magnetic tape is pulled out of the cassette using a tape loading guide and loaded onto a predetermined tape running path. In order to correctly insert the tape loading guide and the like inside the magnetic tape when the cassette is installed at the cassette installation position, it is necessary to correctly position the front surface of the cassette to be installed at the cassette installation position at a predetermined position. For this reason, conventionally, when a cassette is inserted into a cassette holder, the front surface of the cassette is pressed against a positioning stopper provided on the cassette holder to position the front surface of the cassette.

Therefore, when attempting to selectively insert cassettes of different sizes into the cassette holder and attach them to the cassette mounting position in order to use multiple types (two or more types) of cassettes of different sizes, the selective It is necessary to press the front surface of each cassette of different size inserted into the cassette holder against the positioning stopper of the cassette holder to position it correctly.

At this time, if the cassettes are manually inserted into the cassette holder, it is possible to press the front surfaces of the cassettes of different sizes against the positioning stopper; When using a small cassette that has a considerably different external shape and can be completely inserted into the cassette holder, it is extremely difficult to manually push the small cassette into the cassette and press it against the positioning stopper. It is difficult to Furthermore, in the case of a small cassette that is completely inserted into the cassette holder, it is very difficult to remove the small cassette from the cassette holder after recording or playback. Under such circumstances, it is extremely difficult to automatically insert and extract cassettes of different sizes into and out of a cassette holder using an automatic cassette changer.

[Purpose of the invention]

The present invention was devised in view of the above-mentioned circumstances, and in order to properly use a plurality of cassettes of different sizes, it is possible to selectively insert cassettes of different sizes into a cassette holder and adjust the cassette mounting position. This is a cassette attachment/detachment device that can be attached to a cassette holder and removed from the cassette holder. It is an object of the present invention to provide a cassette attachment/detachment device that allows insertion and extraction to be carried out accurately and easily each time.

[Summary of the invention]

The present invention provides a cassette holder into which a plurality of types of cassettes of different sizes are selectively inserted, and a cassette holder which drives the cassette holder back and forth between a cassette insertion position where the cassettes are inserted and a predetermined cassette mounting position. The cassette reciprocating mechanism includes a holder reciprocating drive mechanism, and a cassette reciprocating drive mechanism that selectively reciprocates the cassette inserted into the cassette holder at predetermined stroke intervals according to the size of the cassette selectively inserted into the cassette holder. This is a cassette attaching/detaching device that can selectively insert multiple types of cassettes of different sizes into a cassette holder, attach them to the cassette attachment position, and remove the cassettes. Even if the differences are quite large, each cassette can be inserted into and removed from the cassette holder accurately and easily each time.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cassette attaching/detaching device in which the present invention is applied to a cassette type video tape recorder will be described below with reference to the drawings.

First, FIGS. 1A and 1B show an example of a cassette holder reciprocating drive mechanism 1. As shown in FIG.

This cassette holder reciprocating drive mechanism 1 reciprocates the cassette holder 2 between the cassette insertion position (raised position) shown in solid lines in FIG. 1A and the cassette mounting position (lowered position) shown in solid lines in FIG. 1B. It is something that is driven. At this time, rack plates 3 are vertically fixed to both left and right sides of the cassette holder 2, and racks 4 are formed in an L shape at the lower and front edges of each rack plate 3, respectively. Pinions 5 engaged with both racks 4 are driven in forward and reverse rotation by a motor 7 mounted on a chassis 6. On the other hand, support plates 8 are vertically fixed to the chassis 6 on both left and right sides of both rack plates 3, and three guide pins 9 fixed to the outer surfaces of both rack plates 3 are connected to both support plates 8. It is slidably engaged in each of three guide grooves 10 provided in the. Note that each guide groove 10 is formed in an L shape that is symmetrical to the L shapes of both racks 4. Further, both pinions 5 are pivotally supported by both support plates 8.

The cassette holder reciprocating drive mechanism 1 is constructed as described above, and the cassette C is attached to and removed from the cassette mounting position in the following manner.

First, when the cassette holder 2 is moved back to the cassette insertion position, the front end 2a of the cassette holder 2 faces the cassette insertion opening 12 opened in the front panel 11, as shown by the solid line in FIG. 1A.

Next, in FIG. 1A, the cassette C is inserted into the cassette holder 2 from the cassette insertion opening 12 in the direction indicated by the arrow a.
It is inserted horizontally from the direction. The inserted cassette C is positioned with its front surface C' brought into contact with a positioning stopper 13 provided on the bottom plate 2c at the rear end 2b of the cassette holder 2.

Next, in FIG. 1A, the motor 7 is driven to rotate forward, both pinions 5 are rotated forward in the direction of arrow b, both racks 4 are driven, and the cassette holder 2 is moved to the cassette mounting position indicated by the solid line in FIG. 1B. will be transferred. At this time, by the guide pin 9 guided by the guide groove 10, the cassette holder 2 is horizontally moved in the direction of the arrow c from the cassette insertion position indicated by the solid line in Fig. 1A to the position indicated by the imaginary line by a stroke S1, and then is moved in the direction of the arrow c as shown in Fig. 1B. It is moved forward along an L-shaped locus such that it is vertically moved in the direction of arrow d from the position indicated by the imaginary line to the cassette mounting position indicated by the solid line by a stroke S2.

Then, by the forward movement of the cassette holder 2, the cassette C is installed at the cassette mounting position, and the pair of left and right reels in the cassette C are engaged with the pair of left and right reel stands provided on the chassis 6, as is conventionally known. At the same time, a tape loading guide or the like is inserted relatively inside the magnetic tape (none of which is shown) being passed inside the cassette C along its front opening. Note that the motor 7 is stopped after this cassette mounting is completed.

The above is the mounting operation of the cassette C. When the cassette C is ejected, the motor 7 is driven to rotate in the opposite direction, both pinions 5 are rotated in the opposite direction in the direction of the arrow e, and both the racks 4 are driven. Then, the cassette holder 2 is moved vertically in the direction of the arrow f from the cassette mounting position indicated by the solid line in Fig. 1B to the position indicated by the imaginary line by a stroke S2 in Fig. 1B, and then from the position indicated by the imaginary line in Fig. 1A. It is horizontally moved by a stroke S1 to the cassette insertion position indicated by the solid line and then moved back.

By this backward movement of the cassette holder 2, the rear surface C'' of the cassette C is projected out of the cassette insertion opening 12 in the direction of arrow h, as shown by the solid line in FIG. 1A.

By the way, as shown in FIG.
1, C2, and C3 are selectively inserted into the cassette holder 2, and by the aforementioned reciprocating movement of the cassette holder 2, these large, medium, and small cassettes C.
1, C2, and C3 can be selectively attached to and detached from the cassette mounting position.

At this time, the cassette holder 2 holds the large cassette C1.
cassettes C1, C2, and C3 can be selectively inserted in the direction of arrow a from the aforementioned cassette insertion opening 12. And these large, medium, and small cassettes C
1, C2, and C3 are fully inserted into the cassette holder 2, these cassettes C
The front surfaces C1', C2', and C3' of 1, C2, and C3 are in contact with a stopper 13 and are positioned,
Front position P of these cassettes C1, C2, C3
1 are restricted to the same position. Also, at this time, large
Guide grooves 1 are formed along the center position P2 in the left and right direction on the bottom of the medium and small cassettes C1, C2, and C3, respectively.
4 are provided, and when the cassette is inserted, each guide groove 14 is engaged with the insertion guide 15 provided at the center position P2 in the left-right direction on the bottom plate 2c of the cassette holder 2, and the cassette is inserted. , these large, medium and small cassettes C1, C2, C
The center positions P2 in the left-right direction of No. 3 are restricted to the same position.

At this time, three sensors 16a, 16b, 16c are provided on the front end 2a side of the cassette holder 2, and one sensor 1 is provided on the rear end 2b side.
6d is provided. As mentioned above, the large, medium, and small cassettes C1,
When C2 and C3 are selectively inserted from the direction of arrow a, the three sensors 16a, 16b, and 16c determine the sizes of these cassettes C1, C2, and C3, and the size of these cassettes C1, C2, and C3
It is detected that the front surfaces C1', C2', and C3' of the cassette holder 2 are inserted into the cassette holder 2 to a predetermined position.
Note that these three sensors 16a, 16b, 16
Based on the determination of the sizes of the cassettes C1, C2, and C3 by c, the distance between the pair of reel stands described above is automatically adjusted to match the sizes of these cassettes C1, C2, and C3. Further, one sensor 16d detects large, medium, and small cassettes C1, C2, and C3 selectively inserted into the cassette holder 2 from the direction of arrow a.
When the front surfaces C1', C2', and C3' of the cassette are brought into contact with the stopper 13, it is detected that the cassette insertion is completed.

Next, as shown in FIG. 3, the cassette attaching/detaching device of the present invention selects the cassettes C1 and C3 according to the sizes of the large, medium, and small cassettes C1, C2, and C3 that are selectively inserted into the cassette holder 2. , C2, and C3 can be selectively reciprocated within the cassette holder 2 at predetermined strokes.

At this time, the states shown by solid lines and imaginary lines in FIG. 3 show the insertion status of large, medium, and small cassettes C1, C2, and C3 into the cassette holder 2, and the states shown by dotted lines in FIG. and the state shown by the virtual line is
This figure shows how large, medium, and small cassettes C1, C2, and C3 are mounted at the cassette mounting positions.

First, large, medium, and small cassettes C1, C2, and C3.
When the large cassette C1 is selectively inserted into the cassette holder 2 from the cassette insertion opening 12 in the direction of the arrow a, the large cassette C1 is inserted to the A position where the front surface C1' is brought into contact with the stopper 13. The rear surface C1'' of the inserted large cassette C1 is the front panel 1.
It is located at position B, which is protruded outward by a predetermined length l ₁ minute. And middle cassette C2 and small cassette C
3 is inserted until the rear surfaces C2'' and C3'' are approximately aligned with the B position. Therefore, the middle cassette C2 and the small cassette C3 are the cassette holder 2.
In the inserted state, these front surfaces C2' and C3' each have a predetermined stroke S with respect to the A position.
The robot is moved back 3 and S4 minutes to positions C and D.

Next, after this selective cassette insertion, the cassette holder 2 is moved to the cassette mounting position as described above, and the selectively inserted large, medium, and small cassettes C1, C2, and C3 are moved to the cassette mounting position. are installed respectively. At that time, the large cassette C1 moves along the horizontal stroke S1 of the cassette holder 2.
The front surface C1' is moved horizontally in the direction of arrow c by the same stroke as , and the front surface C1' is moved to position E. On the other hand, the middle cassette C2 and the small cassette C3 are moved within the cassette holder 2 by predetermined strokes S3 and S4, respectively, in the direction of the arrow c, and are further moved horizontally in the direction of the arrow c by the cassette holder 2, so that their front surfaces are C2' and C3' are aligned at the E position, respectively. Therefore, the large cassette C1 is moved horizontally in the direction of arrow c by a stroke S1, while the middle cassette C2 and small cassette C3 are moved by a stroke equivalent to (S1) + (S3) and (S1) + (S4), respectively. It will be horizontally moved in the direction of arrow c.

Note that when the cassette is ejected, the large cassette C1 is moved horizontally in the direction of the arrow g by a stroke S1 in a reverse operation when the cassette was inserted, so that the rear surface C1''
is returned to position B, while the middle cassette C2
and small cassette C3 each have a stroke (S1) +
(S3) and (S1)+(S4) are horizontally moved in the direction of arrow g, and these rear surfaces C2'' and C3'' are aligned at position B.

Next, as mentioned above, large, medium, and small cassettes C
A first embodiment of a cassette reciprocating drive mechanism 21 for selectively reciprocating the cassettes 1, C2, and C3 within the cassette holder 2 at predetermined strokes will be described with reference to FIGS. 4 to 10.

First, as shown in FIG. 4, this cassette reciprocating drive mechanism 21 is provided in the cassette holder 2 below the bottom plate 2c along the center position P1 in the left-right direction. Further, a motor 22 for driving a cassette reciprocating drive mechanism 21 is fixed to the lower part of the bottom plate 2c.

Next, as shown in FIG. 5, the cassette reciprocating drive mechanism 21 includes a pair of support plates 23a and 23b fixed at both front and rear positions at the bottom of the bottom plate 2c, and a central portion between the support plates 23a and 23b. A rotatable feed screw 24 installed horizontally in the feed screw 24, a pair of guide shafts 25 installed horizontally in parallel on both sides of the feed screw 24 between both support plates 23a and 23b,
A movable table 26 having both guide shafts 25 inserted through both ends thereof and configured to be movable along both guide shafts 25.
A pair of left and right engaging pins 27 are vertically attached to the moving table 26, and a feed screw 24 is held in a floating state in the center of the moving table 26.
It is composed of a nut 28 etc. that are engaged with.
The feed screw 24 is arranged along the center position (P1) in the left-right direction in FIG. and the forward movement position on the front end 2b side of the cassette holder 2 shown by the solid line in FIG. It is configured to be driven back and forth along the bottom plate 2c. A belt 31 is wound between a pulley 29 fixed to one end of the feed screw 24 and a drive pulley 30 of the motor 22, and the feed screw 24 is driven to rotate in the forward and reverse directions by the forward and reverse rotation of the motor 22. It is configured as follows. Further, both the engagement pins 27 are configured to be able to move up and down as described later, and both the engagement pins 24 are moved in the front and back direction (arrow c,
As shown in FIG. 4, a pair of left and right elongated holes 32 are provided in the bottom plate 2c of the cassette holder 2 along the reciprocating locus in the g direction).

Next, the elevating mechanism 34 for both engaging pins 27 attached to the movable table 26 will be explained with reference to FIGS. 6 to 9B.

First, both engaging pins 27 are inserted from below into a pair of left and right through holes 35 vertically provided in the vicinity of both left and right ends of the movable table 26, and are held so as to be able to rise and fall freely, and their upper ends 27a are at the bottom. It is constructed so that it can be inserted into the cassette holder 2 by passing through a long hole 32 provided in the face plate 2c. A stopper ring 36 is provided approximately in the middle of both engagement pins 27 in the vertical direction to restrict the amount of insertion of the upper end 27a into the cassette holder 2. Further, the lower ends 27b of both engaging pins 27 are connected by a connecting rod 37. A leaf spring 39 is fixed to the rear surface 26a of the moving table 26 by a pair of set screws 38.
A pair of spring pieces 39a press the connecting rod 37 from below to above, thereby causing both engagement pins 27
is being encouraged to rise. In addition, the lower surface 2 of the moving table 26
A projection piece 41a provided at the upper end of the control plate 41 is engaged with the recess 40 provided in the control plate 6b. The control plate 41 is held between the engaging pins 27 and placed on the connecting rod 37, and is configured to be freely rotatable in the vertical direction using the protrusion 41a as a pivot point. Note that the lower end of this control plate 41 has an inclined piece 4.
1b is provided, and this inclined piece 41b is configured to be able to come into contact with a stopper pin 42 horizontally fixed to the support plate 23a on the front end 2a side of the cassette holder 2.

The cassette reciprocating drive mechanism 21 is constructed as described above, and includes the upper ends 27a of the pair of left and right engaging pins 27.
By selectively engaging the bottom surfaces of the middle cassette C2 and the small cassette C3, these cassettes C2 and C3 are selectively driven back and forth within the cassette holder 2 at every predetermined stroke. For this purpose, as shown in FIGS. 8A to 9B, a pair of left and right engagement holes 43 are provided in the bottom surfaces of the middle cassette C2 and the small cassette C3, into which both the engagement pins 27a can be engaged. However, both engaging holes 43 are not provided in the large cassette C1.

The operation of this cassette reciprocating drive mechanism 21 will be explained below.

First, the loading operation of the small cassette C3 will be explained. Before the insertion of the small cassette C3 is started, as shown in FIGS. 8A and 9A, the moving table 2
6 is returned to a return position on the front end side of the cassette holder 2. And in this return state, the 9th A
As shown in the figure, the inclined piece 41b of the control plate 41 is brought into contact with the stopper pin 42, and the control plate 41 is rotated in the direction of arrow i about the projecting piece 41a. As a result, as shown in FIG. 8A, the control board 41
, the connecting rod 37 is pushed downward, both engaging pins 27 are lowered in the direction of arrow j against the leaf spring 39, and their upper ends 27a are pulled down below the bottom plate 2c of the cassette holder 2. It is becoming a state.

Next, in this state, as shown in FIG. 3, the small cassette C3 is inserted into the cassette holder 2 from the cassette insertion opening 12 in the direction of arrow a, and when the front surface C3' is inserted to position D, A sensor 16c shown in FIG. 2 detects insertion of the small cassette C3. Then, the motor 22 is driven to rotate forward, and the feed screw 24 is driven to rotate forward in the direction of arrow k in FIG. The forward movement is started in the direction of arrow c from the backward movement position shown by to the forward movement position shown by the imaginary line.

At this time, first, as shown in FIG. 9B, the moving table 26
Immediately after the start of forward movement in the direction of arrow c, the control plate 41
The inclined piece 41b is separated from the stopper pin 42, and as shown in FIG.
is raised in the direction of arrow m. Then, as shown by dotted lines in FIG. 10, the upper ends 27a of both engaging pins 27 are inserted through both elongated holes 32 provided in the bottom plate 2c of the cassette holder 2, and are brought into contact with the bottom surface of the small cassette C3. As the movable table 26 moves forward in the direction of arrow c, the upper ends 27a of both engagement pins 27 slide on the bottom surface of the small cassette C3.

Then, when the moving table 26 is moved forward a predetermined distance in the direction of arrow c from the backward movement position, as shown in FIG. It reaches just below 43.
At that moment, both spring pieces 39a of the leaf spring 39
As a result, both the engagement pins 27 are further raised in the direction of the arrow m via the coupling metal 37, and the upper ends 27a of both the engagement pins 27 are engaged in the engagement holes 43.

Then, as shown by the solid line in FIG.
6 continues forward movement in the direction of arrow c, both engaging pins 27 lock the small cassette C3, and the small cassette C3 is moved to the tenth position in the cassette holder 2.
It is driven forward in the direction of arrow c to the forward movement position shown by the imaginary line in the figure.

That is, at this time, as shown in FIG. 3, the small cassette C3 is moved forward within the cassette holder 2 by a predetermined stroke S4, and its front surface C3' is moved from the D position to the A position where it abuts the stopper 13. The insertion of the small cassette 13 is completed.

Then, when the insertion of the small cassette C3 is completed, the second
This is detected by the sensor 16d shown in the figure, the motor 22 is stopped, and the moving table 26 is stopped at the forward movement position shown by the imaginary line in FIG.

On the other hand, the small cassette C by this sensor 16d
Based on the detection of completion of insertion in step 3, as described above, the cassette holder 2 is moved from the cassette insertion position shown in FIG. 1A to the cassette installation position shown in FIG. After being horizontally moved in the direction of arrow c for S1, the cassette is moved vertically in the direction of arrow d for a predetermined stroke of S2, and is loaded into the cassette mounting position.

At this time, the sensor 16c is connected to the small cassette C3.
Based on the detection of the insertion of the reel, the moving table 26 starts moving forward in the direction of arrow c, and the cassette holder 2 starts moving forward in the direction of arrow c, until just before the small cassette C3 is engaged with the reel stand. It is also possible to complete the forward movement of the small cassette C3 within the cassette holder 2 by a predetermined stroke S4 in the direction of the arrow c during the forward movement of the cassette holder 2.

Next, when ejecting the small cassette C3, as described above, the cassette holder 2 is vertically moved in the direction of the arrow f from the cassette mounting position shown in FIG. 1B, and after the small cassette C3 is removed from the reel stand, The motor 22 is driven to rotate in reverse, and the feed screw 2
4 is reversely rotated in the direction of the arrow n in FIG. 5, and the movable table 26 is moved back in the direction of the arrow g in FIGS. 4 and 5.

As a result, in the reverse operation of the above-described mounting operation of the small cassette C3, both engaging pins 27 lock the small cassette C3, and as shown in FIG. It is driven backward in the direction of arrow g.

Then, when the front surface C3' of the small cassette C3 is moved back from the A position to the D position and the rear surface C3'' is projected to the B position outside the front panel 11, the ninth
As shown in Fig. A, the inclined piece 41b of the control plate 41 is brought into contact with the stopper pin 42 again,
is rotated in the direction of arrow i around the protruding piece 41a. As a result, as shown in FIG. 8A, the control board 41
, the connecting rod 37 is pushed downward, both engaging pins 27 are lowered in the direction of arrow j against the leaf spring 39, and their upper ends 27a are separated from both engaging holes 43 of the small cassette C3. , the small cassette C3 is pulled down below the bottom plate 2c of the cassette holder 2.
is stopped at the initial insertion position into the cassette holder 2.

Next, the loading and ejecting operations of the middle cassette C2 are carried out in almost the same way as the case of the small cassette C3, and the middle cassette C2 is also locked by both engaging pins 27 of the moving table 26 and held inside the cassette holder 2. Driven back and forth. However, as shown in FIG. 3, the middle cassette C2 is driven back and forth with a predetermined stroke S3, which is smaller than the stroke S4 of the small cassette C3.

Next, since the large cassette C1 does not have the pair of engagement holes 43 provided in the small cassette C3 and the middle cassette C2, even if the movable table 26 is reciprocated, both engagement pins 27 will not fit. Therefore, there is no possibility that the large cassette C1 is locked and driven back and forth. Further, when the large cassette C1 is inserted into the cassette holder 2 and the sensor 16a shown in FIG. 2 detects the large cassette C1, the motor 22 may not be driven.

Next, a second embodiment of the cassette reciprocating drive mechanism 21 will be described with reference to FIGS. 11 and 12.

In this case, the motor 22 shown in the first embodiment,
A moving base 26 consisting of a feed screw 24 and a nut 28
Instead of the screw feeding mechanism, the reciprocating force of the cassette holder 2 is used to drive the movable table 26 back and forth.

That is, in this case, a pair of racks 47 are provided on both left and right sides of the movable table 26 that is slidable along the guide shaft 25.
are integrally supported via support arms 48, respectively,
A pair of left and right pinions 49 engaged with these racks 47 are rotatably supported on the lower surface of the bottom plate 2c of the cassette holder 2 via support shafts 50, respectively, and these pinions 49 are attached to both the left and right support plates 8. It is engaged with a pair of fixed racks 51.

Therefore, in this case, the first
By reciprocating in the directions of arrows c and g in Fig. 1, the moving table 26 moves twice as far as the moving distance of the cassette holder 2 by the feeding mechanism of both racks 47, both pinions 49, and both racks 51, and moves in the direction of arrow c.
It is configured to automatically reciprocate in the and g directions.

In this case, both engaging pins 27 of the moving table 26
The stroke difference between the small cassette C3 and the middle cassette C2 (corresponding to S4-S3 shown in FIG. 3) can be adjusted using the elongated hole. That is, the engagement hole 43 of the small cassette C3 is a circular hole with approximately the same diameter as both engagement pins 27, and the engagement hole 43 of the middle cassette C2 is a circular hole with approximately the same diameter as both engagement pins 27.
may be formed as a long hole corresponding to S4-S3 above.

Although the embodiments of the present invention have been described above, the cassette holder reciprocating drive mechanism 1 and the cassette reciprocating drive mechanism 21 referred to in the present invention can be modified in various ways.

[Application example]

The present invention is applicable to cassette attachment/detachment devices in various cassette type recording and reproducing apparatuses other than cassette type video tape recorders and various other cassette type information processing apparatuses.

〔Effect of the invention〕

As described above, in order to use multiple types of cassettes of different sizes, the present invention selectively inserts cassettes of different sizes into a cassette holder, mounts the cassettes at the cassette mounting position, and removes the cassettes. Moreover, at that time, the cassette reciprocating drive mechanism selectively moves the cassette within the cassette holder at predetermined strokes depending on the size of the cassette selectively inserted into the cassette holder. Since the cassettes are configured to be able to be driven back and forth, even if the cassettes have a considerably different external shape, each cassette can be inserted into and removed from the cassette holder accurately and easily each time. Therefore, by using the automatic cassette exchange device, it is possible to easily implement a method in which a plurality of types of cassettes of different sizes are automatically inserted into and automatically removed from the cassette holder.

[Brief explanation of the drawing]

The drawings show an embodiment of a cassette attaching/detaching device in which the present invention is applied to a cassette type videotape recorder, and FIGS. 1A and 1B are partially cutaway side views showing an example of a cassette holder reciprocating drive mechanism. Figure 2 shows the large size inside the cassette holder.
Fig. 3 is a partially cutaway plan view illustrating selective insertion of medium and small cassettes, and Fig. 3 is a partially cutaway side view illustrating selective reciprocating of large, medium and small cassettes within the cassette holder. , FIG. 4 is a bottom view of the entire cassette holder showing the first embodiment of the cassette reciprocating drive mechanism, FIG. 5 is a perspective view of the main parts of the same, and FIG.
The figure is an enlarged exploded perspective view of the main parts of the same as above, Fig. 7 is an enlarged plan view of the main parts of the same as above, and Figs. 8A to 8C are the 7
Figure-line sectional view, Figures 9A and 9B are the 7th
Fig. 10 is a partially cutaway side view illustrating the situation in which the cassette in the cassette holder is reciprocated on a moving table, and Fig. 11 is a cassette showing a second embodiment of the cassette reciprocating drive mechanism. A bottom view of the entire holder, and FIG. 12 is a sectional view taken along the line XII-XII in FIG. 11. Also, in the symbols used in the drawings, 1...Cassette holder reciprocating drive mechanism, 2...
Cassette holder, 4...Rack, 5...Pinion, 7...Motor, 11...Front panel, 12...
...Cassette insertion slot, 13...Stopper, 14...
...Guide groove, 15...Insertion guide, 16a, 16
b, 16c, 16d...Sensor, 21...Cassette reciprocating drive mechanism, 22...Motor, 24...Feed screw, 25...Guide shaft, 26...Moving table, 2
7... Engagement pin, 28... Nut, 34... Engagement pin lifting mechanism, 37... Connection rod, 39... Leaf spring, 41... Control plate, 42... Stopper pin.

Claims (1)

[Claims] 1. A cassette holder into which multiple types of cassettes of different sizes are selectively inserted, and a cassette holder reciprocating drive that drives the cassette holder back and forth between a cassette insertion position where the cassettes are inserted and a predetermined cassette mounting position. and a cassette reciprocating drive mechanism for selectively reciprocating the cassette inserted into the cassette holder at predetermined strokes depending on the size of the cassette selectively inserted into the cassette holder. Device.