JPS6139970A - Cassette automatic reproducing device - Google Patents

Abstract

PURPOSE:To reduce a manufacture cost by adopting a constitution that a cassette deck is moved to a next cassette position when a switch provided to a cassette deck does not detect the cassette at the loading of the cassette to the cassette deck. CONSTITUTION:When no cassette C is loaded while the cassette deck 10 is closed, since a cassette presence detecting switch S4 is closed, a control circuit reverses immediately a motor 12. Thus, the Geneva gear mechanism is reversed also to open the cassette deck 10 and elevate a slide plate 19. Thus, the turning lever is reversed by the weight of the cassette C, which is restored in a cassette case 32. Then a cassette restoration detecting switch S3 is turned on by the elevating position of the slide plate 19, the control circuit stops the motor 12 and a motor 6 starts forwarding. Then the control circuit stops the motor 6 when the moving stand 9 moves to the position of the 2nd cassette C. Thus, the manufacture cost is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an apparatus for automatically and continuously reproducing a plurality of tape cartridges. , [Technical Background and Problems of the Invention] Conventionally, this type of automatic regeneration device was disclosed in Japanese Patent Application Laid-Open No. 58-1
There are devices disclosed in Japanese Patent Nos. 21171 to 121174.

In this device, a cassette is stored in a cassette case horizontally in the height direction, the cassette deck moves in the vertical direction, the part of the cassette that protrudes from the case is pulled out by rowing, and the cassette is placed on the cassette deck. It is meant to be moved.

This has the disadvantage that it takes a very long time to play the cassette, and a part of the cassette must always be exposed from inside the cassette case, so the protruding part becomes a nuisance when being carried. In addition, when a cassette is inserted into the cassette deck, the cassette is completely removed from the cassette case, so if the position shifts even slightly when returning it to the cassette case after playback, the cassette cannot be returned to the cassette case. The drawback was that it was difficult.

[Purpose of the invention]

The present invention has been made in view of the points on paper, and its purpose is to move the cassette to the next cassette position if the switch provided on the cassette deck does not detect the cassette when the cassette is installed on the cassette deck. Since the deck is moved, it is only necessary to add one switch to detect the presence or absence of a cassette. Therefore, the number of parts is reduced and the cost is lower than the conventional method that uses a photocoupler to detect the presence or absence of a cassette. An object of the present invention is to provide an automatic cassette playback device that can be manufactured.

[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view, FIG. 2 is a sectional front view, FIG. 3 is a sectional side view, and FIG. 4 is a plan view.

In the same drawing, 1 indicates the casing, la, l
b is the left and right side plates, IC is the back plate, 1d is the top plate, and 1e is the bottom plate. 2 and 3 are screw gears (2
Sprockets 2a and 3a are fitted to one end (on the right side plate lb side) of the threaded thread. , 4 is a large gear pivotally supported by a pin If planted on the right side plate 1b, and a sprocket 4a is also fixed to the back surface of the large gear.
A timing belt 5 is wound between this sprocket 4a and the sprockets 2a and 3a of the screw gears 2 and 3. Reference numeral 6 denotes a motor screwed to the right side plate 1b, and a gear 6a fixed to the rotating shaft of the motor is meshed with the large gear 4. Reference numeral 7 denotes a disk fixed to the front surface of the large gear 4, and has, for example, eight black and white slits formed on its surface. A substrate 8, on which a light emitting element, a light receiving element, and necessary circuits are attached, is screwed to the right side plate 1b via a spacer 8a on the opposite surface of the disk 7.

Therefore, when the motor 6 is driven and the large gear 4 rotates, the light from the light emitting element is irradiated onto the disk 7, the light reflected by the white slit reaches the light receiving element, and the light receiving element changes the amount of rotation of the large gear 4. It is designed to output a corresponding pulse signal.

Reference numeral 9 denotes a movable table having threaded pipes 9a and 9b fixed at both front and rear ends thereof to be screwed into the threaded gears 2 and 3, and a cassette guide plate 9c is formed thereon. A thin cassette deck 10 is attached above the movable table 9 where the cassette guide plate 9c is formed so as to be openable and closable using the upper edge 6 as a fulcrum.

Note that 10a is an operating lever fixed to the cassette deck 10, and by displacing this operating lever 10a, the cassette/7 deck 10 can be moved toward the moving platform 9 (closed state) or separated from the moving platform 9. (open state).

1 is a mounting plate screwed to the moving table 9, on which a control member for controlling the cassette deck 10 and a cassette lifting mechanism to be described later is attached. That is, the motor 12, the worm wheel 13 that meshes with the worm 12a attached to the rotating shaft of the motor 12, the intermediate gear 14 that meshes with the worm wheel 13, and the intermediate gear 1.
A small gear 1 meshed with a small gear integrally formed in 4.
5, and a small gear 15 integrally formed with the small flat gear 15.
a pair of general teeth 1-7 engaged with the general tooth 16a of the general tooth rotation gear 16;
, 18 and a guide hole 19a is inserted into the pin lla implanted in the mounting plate 11, and a slide plate 19 that is slidable in the vertical direction is attached.

The general tooth rotation gear 16 has two pins 16b and 1
6C is implanted, and as the pins 16b and 16c rotate, the general teeth 17 and 18 rotate.
The general teeth 17 and 18 are rotated. Further, a pin 17b is implanted in the general tooth 17, and this pin 17b is inserted into the groove 19 of the slide plate 19.
b. Furthermore, another groove 18b is formed in the general tooth 18, and the operating rod 10a of the cassette deck 10 described above is engaged with this groove 18b.

Sl is a start end detection switch fixed to the right side plate 1b, and Sl, which is turned on by the protrusion 11b when the mounting plate 11 moves to the right end (starting end), is a deck set detection switch fixed to the mounting plate 11. Then, the pin 16C of the general tooth rotation gear 16 turns on. S3 is mounting plate 1
The cassette return detection switch is fixed at 1 and is turned on when the slide plate 19 is raised. S4 is a switch fixed to the cassette deck 10 for detecting the presence or absence of a cassette.

20 to 24 are pins Ig implanted in the above-mentioned back plate IC.
, lh, respectively, and a tension spring 20a is tensioned between the pin 1g and the lower end of the intermediate plate. Note that the spring 20a in FIG.
Although the pins 21 to 2 are shown as being stretched only to
4 is similarly tensioned with a spring, and the intermediate plate 20~
24 is pushed down. Then, when the movable table 2 moves and the slide plate 19 is located at the intermediate plate 20, and when the slide plate 19 descends, the intermediate plate 20 is moved by the spring 20.
It descends against the spring force of a. Note that the intermediate plates 21 to 24 also move down corresponding to the movement position of the slide plate 19.

Reference numeral 25 denotes a partition plate fixed within the casing 1, and a short guide protrusion 25a is formed at approximately the middle part on the inlet side, and a support base 25b is formed at the bottom part on the inlet side. Furthermore, the above-mentioned left side plate 1a facing the partition plate 25 has a guide strip 11 formed at a different level from the guide protrusion 25a. Note that this guide strip 11 is formed over the entire length in the depth direction.

Reference numerals 26 to 30 are abbreviated pivot levers rotatably supported on a shaft 31 stretched between the partition plate 25 and the left side plate 13, and each short piece 26a to 30a is connected to the intermediate plate 20 to 24
It is in contact with the bottom edge of. Therefore, when the ζ intermediate plates 20-24 are lowered, the rotating levers 26-30 in contact with them are rotated counterclockwise in FIG. 1 about the shaft 31 as a fulcrum.

Reference numeral 32 designates a cassette case for storing the tape cassette C, and the guide protrusion 25a described above is inserted into the guide groove 32a, the guide line 11 is inserted into the guide groove 32b, and the bottom surface is placed on the support stand 25b and guided. Ru. In addition, 3
2G is a handle portion.

The front and rear inner walls of this cassette case 32 are formed with a partition portion 32d for partitioning the inserted cassette C, and an insertion groove 32e into which the protrusion c1 formed on both sides of the cassette is inserted. There is. Further, from the back to the bottom of the cassette case 32, the above-mentioned rotary lever 26 is provided.
An insertion hole 32f into which 30 is inserted is formed. Therefore, with the tape surface of the cassette C facing upward, each partition 3
When inserted into the space partitioned by 2d, five cassettes C can be set in the case shown (FIG. 6). Note that the protrusion C1 of the cassette C is guided by the insertion groove 328 at the center of the cassette C, so if the cassette C is inserted upside down, the protrusion C1 will come into contact with the insertion groove 326. As a result, only a portion of the tape side of the cassette C can be inserted (FIG. 7). Therefore, there will be no difference between the cents of the cassette C.

Then, with the loaded cassette case 32 stored in the mobile phone 1, the rotation lever 26 is moved by the above-described operation.
is rotated, one cassette C in the cassette case 32 is pushed up as the rotation lever 32 is rotated.

Next, the operation will be explained based on the above structure.

First, as described above, set the cassette C in the cassette case 32 with the tape side facing upward, and then insert the guide protrusion 25a and the guide line if into the guide grooves 32a and 3 in the case 1.
2b is guided and inserted all the way until it is locked by a locking mechanism (not shown).

'□ Next, when you operate the playback button (not shown), the motor 6
begins to rotate, but when the start end detection switch S1 is not in the ON state, that is, when the mounting plate 11 is not at the right end position and is at an intermediate position where the protruding piece 11b presses the switch S1. , the motor 6 starts rotating in reverse in response to a signal from a control circuit, which will be described later.

When the motor 6 rotates in reverse, the screw gears 2 and 3 synchronously rotate in reverse via the large gear 4 and the timing belt 5, so that the screw pipes 9a, which are connected to the screw gears 2 and 3,
9b moves to the right. As a result, the moving table 9 moves to the right and the mounting plate 11 also moves to the right until the protruding piece 11b closes the switch S1. And the protruding piece 11b
When the motor closes switch S1, the mokuro starts rotating in the forward direction in response to a signal from the control circuit.

When the motor 6 starts rotating in the normal direction, the screw gears 2 and 3 rotate in the normal direction via the large gear 4 and the timing belt 5, and the moving table 9 starts moving to the left. Further, as the large gear 4 rotates, the disk 7 also rotates, and the light receiving element inputs a pulse signal corresponding to the rotation of the disk 7 to the sending control circuit. The control circuit counts these pulse signals and cuts off the power to the motor 6 when a preset number of pulse signals has been counted. At this time, the moving table 9 is located on the rightmost cassette C in the cassette case 32, and the slide plate 19 corresponds to the intermediate plate 2o. Therefore, when the cassette C is lifted up, the cassette C is lifted up by the cassette guide plate 9 of the moving table 9.
It will be inserted into c.

Next, the control circuit cuts off the power supply to the motor 6 and simultaneously starts supplying power to the motor 12. When the motor 12 starts to be energized, the general tooth rotary gear 16 is rotated clockwise via the worm wheel 13, the intermediate ratio gear 14, and the Kodaira gear 15. At this time, the pin 16b of the general tooth rotating gear 16
, 16c have the grooves 17a, 18 of the general teeth 17, 1B.
a is not engaged. Therefore, the cassette deck 1o is in an open state (FIG. 8).

Then, the motor 12 rotates, the general tooth rotating gear 16 is rotated clockwise, and the pin 16b is inserted into the groove 17a of the general tooth 17.
When engaged, the general tooth 17 is rotated counterclockwise as the general tooth rotating gear 16 rotates once. Therefore, the pin 17b provided on the general tooth 17 allows the sliding plate 19 to
is lowered, which causes the intermediate plate 20 to move towards the spring 2
It descends against the spring force of 0a (Fig. 9). As a result, the rotary lever 26 rotates, and its tip abuts against the back surface of the cassette C through the insertion hole 32f of the cassette case 32, pushing up the cassette C and inserting it into the cassette guide plate 9C of the movable table 9.

Further, when the general tooth rotating gear 16 is rotated, the pin 16
b separates from the groove 17a of the general tooth 17, but the general tooth 1
7 is engaged with the general tooth 16a of the general tooth rotation gear 16, and rotation is prevented and the gear is stopped.

Then, the general tooth 17 of the pin 16b of the general tooth rotating gear 16
At the same time as the other pin 16c is removed from the groove 17a of the pin 16c, the other pin 16c is engaged with the groove 18a of the general tooth 18 (FIG. 9). Therefore, as the general tooth rotation gear 16 rotates, the general tooth 18 is rotated, and the operating rod 1. is engaged with the groove 18b of the general tooth 18. Oa
, the cassette deck 10 is rotated in the closing direction, and finally the cassette C in the cassette guide plate 9c of the moving table
is installed. That is, the reel shaft is fitted into the reel of the cassette C, and the capstan is inserted into the capstan hole of the cassette C. When the cassette C is installed, the pin 16c is inserted into the groove 18 of the general tooth 18.
The pin 16c closes the deck set detection switch S2 at the same time as the pin 16c leaves the pin 16c. As a result, the control circuit cuts off the power to the motor 12 and puts the cassette deck 10 into the reproducing state' (FIG. 10).

The case where the cassette detection switch S4 does not detect the cassette C when the cassette deck 10 is in the closed state, that is, the case where the cassette C is not stored at the rightmost end of the cassette case 32 will be described later.

The above playback is performed and the end of the tape is placed on cassette deck 1.
0 is detected (including both single-sided and double-sided playback), or when a stop button (not shown) is operated, the control circuit energizes the motor 12 in the opposite manner to the above, and the motor 1
2 starts rotating in reverse.

When the motor 12 is reversed, the general tooth rotating gear 16 is reversed, firstly the general tooth 18 is reversed to open the cassette deck 10, and the cassette C is removed from the cassette deck lO. Next, the general teeth 17 are reversed and the slide plate 19 is raised. Therefore, the intermediate plate 20 carries its own weight and the spring 2
It rises due to the spring force of 0a, and along with this, the rotating lever 2
6 is turned over by the weight of the cassette C, and the cassette C returns into the cassette case 32. In addition, cassette C is rotary lever 2.
Even when the cassette C is pushed up by the cassette 6 and is at the highest position, the back of the cassette C remains inside the cassette case 32, so that the cassette C descends smoothly even when descending.
The cassette case 32 is quickly returned to the cassette case 32.

Then, when the slide plate 19 is in the raised position with the cassette C completely housed in the cassette case 32, the cassette return detection switch S3 is turned on. As a result, the control circuit cuts off the power supply to the motor 12 and starts supplying power to the motor 6 again. When the motor 6 is energized and begins to rotate forward, the light receiving element sends out a pulse signal as the disk 7 rotates. Therefore, the control circuit detects this pulse signal, and when a preset pulse signal is counted, the power supply to the motor 6 is cut off. At this time, mobile platform 9
The cassette guide plate 9C is moved to the second cassette C position. Then, the control circuit energizes the motor 12 again, and by the same operation as above, the motor 12 is energized again.
The cassette C is guided into the cassette guide plate 9C, the cassette deck 10 is closed, the cassette C is loaded, and playback is started.

The above operation is repeated three times, but if the cassette C is not inserted into the cassette guide plate 9C when the cassette deck 10 is closed, the cassette presence/absence detection switch S4 is closed. , a signal indicating that there is no cassette C is sent to the control circuit, and the control circuit immediately rotates the motor 12 in the reverse direction and performs the same operation as in the above-mentioned playback end state.

The above explanation of the operation was from the initial state when the cassette case 32 was inserted, but if the stop button was operated during playback last time, the operation would stop with the cassette C still attached to the cassette deck 10. Different. Therefore, switch S1 is in an open state.

In this state, when the playback button is operated again, the control circuit energizes the motor 12, which rotates in the opposite direction to return the cassette C to the cassette case 32, and the cassette deck 10 is opened.

Then, the motor 6 is energized, and the motor 6 rotates in the opposite direction to move the movable table 9 to the right and return it to its initial state. Therefore, the switch S1 is turned on, and the above-described operation is started from this state.

Next, the control circuit will be explained with reference to FIG. In addition, FIG. 12 is a plan view of the operation/display section, where 33 indicates a play button, a stop button, various switching buttons, and a program center cycle, and 34 indicates a display section that displays the operating status of the cassette deck 10. ing.

In FIG. 11, reference numeral 35 denotes a control circuit such as a microcomputer, which receives signals from the cassette presence/absence detection switch S4 and the tape end detection switch of the cassette deck 10, and puts the cassette deck into a play state or a stop state.

Furthermore, the motors 6 and 12 are stopped in the forward and reverse directions by a signal from the control circuit 35. When the operation button 33 is operated, the control circuit 35
outputs a control signal to this device and the cassette deck 10. Further, the display section 34 displays the status of the cassette deck 10 based on the output from the control circuit 35. The pulse signal is a pulse signal from a light receiving element that detects the rotation speed of the disk 7, and the control circuit 35 controls the motor 6.12 while comparing the number of pulse signals with a preset value.

Further, the control circuit 35 controls the motor 6.12 and the cassette deck 10 based on the on/off signals of the switches 31 to S3.

Next, the operation of the control circuit will be explained.

The operation is as shown in the flowchart shown in FIG. That is, when the playback button is operated, the start end detection switch S1
Chart a) to judge whether the switch Sl is on or not.
is off, the motor 12 is rotated in the reverse direction assuming that the moving table 9 is not at the initial position and is stopped at the position at the previous end, and the cassette C is mounted on the cassette deck 10 (chart b). Cassette C in cassette case 32
When the cassette is returned to the inside, the cassette return detection switch s3 is turned on (chart c). Thereafter, the motor 6 is reversed (chart d), and the moving table 9 is moved backward. Then, when the start end detection switch s1 is turned on (chart e), it means that the movable table 9 has been placed in the initial position, and the process moves to the next stage.

When the switch Sl is turned on, a program is set and it is determined whether the tape to be played first is reserved or not. At the same time, the light-receiving element sends out the rotational speed of the motor 6 as a pulse signal (chart g). Then, this pulse signal is counted by a preset number, that is, the number of pulse signals is counted by a preset number.
When the number of pulse signals is counted when the motor reaches the first position in the cassette case 32, the motor 6 is stopped (char).

On the other hand, even if a tape is reserved, if the motor 6 is rotated forward in the same way as described above, pulse signals are counted (
Chart i). When the count of this pulse signal coincides with the movement of the cassette deck 1o to the position set by reservation, the motor 6 is stopped (chart j).

Next, the motor 6 is rotated in the normal direction (chart k), and the cassette C is loaded onto the cassette deck 10.

Here, if there is a cassette C, the switch S4 for detecting the presence or absence of a cassette is turned on (chart o), and when the installation of the cassette C is completed, the switch S2 for detecting the deck set is turned on (chart m), so the cassette deck 1o is played. state (chart n).

When the playback progresses and the end of the tape is reached (including both single-sided and double-sided playback), this is detected (chart n), the motor 12 is rotated in the reverse direction (chart p), and the cassette decker 0
At the same time, the cassette C is returned to the cassette case 32. As a result, the cassette return detection switch s3 is turned on (chart q), and the motor 12 is stopped and the motor 6 is rotated forward or backward (chart r).
When the number of pulse signals that the cassette deck 10 has moved to the position of the next cassette C is counted (chart s), the cassette deck 10 returns to the position shown in the chart and performs the same operation.

In the chart l, if the switch S4 for detecting the presence or absence of a cassette is not turned on, that is, if there is no cassette C, the process advances to the chart p and the next cassette C is detected.
Proceed to playback.

〔Effect of the invention〕

As described above, in the present invention, a cassette deck is rotatably attached to a movable table that moves on a cassette case, and a switch is provided on the cassette deck to detect the presence or absence of a cassette. If the switch does not detect a cassette when the cassette deck is rotated with respect to a cassette that has been pulled out and stored in the moving table, the drive device will reverse and return to the initial state, and then the moving table will move to the next cassette position. Since it is a moving device, only one switch is required to detect the presence or absence of a cassette.
Therefore, the photocoupler for detecting the presence or absence of a cassette has fewer parts than the conventional photocoupler for detecting the presence or absence of a cassette, is inexpensive, and operates reliably.

[Brief explanation of the drawing]

The figures show an embodiment of the automatic cassette playback device according to the present invention, in which Fig. 1 is an exploded perspective view, Fig. 2 is a sectional front view, Fig. 3 is a sectional side view, Fig. 4 is a plan view, and Fig. 5 is an exploded perspective view. The figure is a side view of the cassette and the cassette deck drive unit, Figure 6 is a perspective view of the cassette case, Figure 7 is a cross-sectional side view of the same as above, and Figures 8 to 10 are front views showing the operating state of Figure 5. , FIG. 11 is a block diagram of the control circuit, FIG. 12 is a surface view of the operating unit, and FIG. 13 is a flowchart of the control circuit. 1... Casing, 2, 3... Screw gear, 6, 12
...Motor, 7.Disc, 9.Moving table, 10.
...Cassette deck, 11...Mounting plate, 16...General tooth rotating gear, 17.18...General tooth, 19...Slide plate, 26-30...Rotating lever, 32...・Cassette case, S1-S4...switch, 35...
control circuit. Fig. 5 32e Fig. 7 32f Fig. 8 Fig. 11 Fig. 12

Claims (1)

[Claims] A cassette case that is removably inserted into a casing and stores a plurality of cassettes therein, a movable base having a cassette storage section that moves on the cassette case in response to a command from a control circuit, and a movable base that The cassette deck is rotatably supported when a cassette is inserted into the cassette guide, and the cassette deck in which the cassette is mounted and the cassette in the cassette case at the position to which the moving table has been moved are moved from the bottom side. a rotating lever for pushing out and inserting into the cassette guide; a driving means for controlling rotation of the rotating lever and the cassette deck; and a switch for detecting the presence or absence of a cassette, and when the switch does not detect a cassette, the driving means is reversed and the moving table is moved to the next cassette position. Automatic cassette playback device.