JPS6139968A - Cassette automatic reproducing device - Google Patents

Abstract

PURPOSE:To simplify a structure and to ensure motor control by controlling a control switch of a motor driving a Geneva gear mechanism controlling the operation until a cassette in a cassette case is loaded to the reproducing position with a pin provided to the Geneva gear. CONSTITUTION:A Geneva gear 17 is driven counter clockwise attended with the turning of an escape wheel driving gear 16 and then a slide plate 19 is descended by a pin 17b provided to the escape wheel 17. Thus, a middle plate 20 is pushed down to drive a turning lever thereby loading the cassette into a cassette guide plate of a pushup moving stand. When the Geneva gear 16 is driven, an escape wheel 18 is turned, a cassette deck 10 is driven in the closing direction via an operating lever 10a engaged with a slot 18b of the escape wheel 18 and the cassette C is loaded. The on/off control of a drive motor 12 is executed by a pin 16c provided to the Geneve gear drive gear 16. The structure is simplified and the motor control is ensured in this way.

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 cassettes.

[Technical background and problems of the invention]

Conventionally, as this type of automatic regeneration device, 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 vertically, the part of the cassette that protrudes from the case is pulled out by a roller, and the cassette is moved onto the cassette deck. It is something that makes you

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 that the protruding part becomes a hindrance when carrying the cassette. Also, when a cassette is inserted into the cassette deck, it 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 must be returned to the cassette case. The disadvantage was that it became difficult.

[Purpose of the invention]

The present invention was made in view of the points on paper, and its purpose is to control the cassette deck attached to the moving table and the rotating lever that pulls up the cassette in the cassette case by one general tooth rotation. By using a gear and two general teeth engaged with the gear, everything can be controlled by one motor, which is the driving source. Therefore, the structure is simple and can be manufactured at low cost, and the on/off control of the motor is simple. An object of the present invention is to provide an automatic cassette playback device that can reliably and accurately control a motor, since this is performed by a switch controlled by a pin provided on one of the general teeth.

[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
The sprockets 2a and 3a are fitted to one end (on the right side plate lb side) of the sprocket. 4 is a pioneer gear that is pivotally supported by a pin 1f planted on the right side plate 1b, and a sprocket 4a is also fixed to the back side of the rear side. A timing belt 5 is wound between this sprocket 4a and the sprockets 2a and 3a of the screw gears 2 and 3. 6 is a motor screwed to the right side plate 1b,
A gear 6a fixed to the rotating shaft 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 9''a and 9b fixed to both ends of the front peak, which are connected to the screw gears 2 and 3, and a cassette guide plate 9C is formed thereon. A thin cassette deck 10 is attached above the cassette guide plate 9C so that it can be opened and closed using its upper edge 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 deck 10 moves toward the movable table 9 (in an open/closed state) or away from the movable table 9 (in an open state).

11 is a mounting plate screwed to the moving table 9';
A control member is attached for controlling the cassette deck 10 and a force ejection and lifting mechanism which will be described later. That is,
A motor 12, a worm wheel 13 that is meshed with a worm 12'a attached to the rotating shaft of the motor 12, an intermediate ratio gear 14 that is meshed with the worm wheel 13, and an intermediate ratio gear 14 that is integrally connected to the intermediate ratio gear 14. A small gear 15 that meshes with the formed small gear, a general tooth rotating gear 16 that meshes with the small gear 15a that is integrally formed with the small gear 15, and a general tooth 16a of the general tooth rotating gear 16. A pair of general teeth 1 to be engaged
Guide holes 19a are inserted into the pins 7, 18 and 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 rotating gear 16 has two pins 16b and 1
6c is implanted, and as the general tooth rotating gear 16 rotates, the pins 16b and 16C are engaged with the grooves 17a and 18a of the general teeth 17 and 18, and the general teeth 17 and 18 are rotated. . Further, a pin 17b is implanted in the general tooth 17, and the tooth pin 17b is connected to the groove 19b of the slide plate 19.
is engaged with. Furthermore, another groove 18b is formed in the general tooth 18, and the operating rod tOa of the cassette deck 10 described above is engaged with this groove 18b.

Sl is a starting edge detection switch fixed to the right side plate 1b, and S2 is a depth center detection switch fixed to the mounting plate 11, which is turned on by the protruding piece llb when the mounting plate 11 moves to the right end (starting edge). 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 1g implanted in the back plate IC described above.
, 1h, 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 on the intermediate plate 20, and the slide plate 19 is lowered, the intermediate plate 20 is lowered against the spring force of the spring 20a. 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 la, 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 intermediate plates 20-24 are lowered, the rotating levers 26-30 in contact with the intermediate plates 20-24 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
2C is a handle portion.

A partition portion 32d for partitioning the inserted cassette C is formed on the front and rear inner wall surfaces of the cassette case 32, and an insertion groove 32e into which the protrusion C1 formed on both sides of the cassette is inserted is formed. . Further, from the back to the bottom of the cassette case 32, the above-mentioned rotary levers 26 to 26 are 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 portion 32
When inserted into the space partitioned by d, the cassette C shown in FIG. 6 can hold five cents. 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 comes into contact with the insertion groove 32e, and the cassette C
Only part of the tape side can be inserted (
Figure 7). Therefore, there is no chance of mistaking the cents of cassette C.

Then, with the loaded cassette case 32 stored in the case 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, insert the cassette L-C into the cassette case 32 with the tape side facing upward, and then insert the guide protrusions 25a and the guide strips 11 into the case L into the guide grooves 32a,
32b is guided and inserted all the way until it is locked by a locking mechanism (not shown).

Next, when a playback button (not shown) is operated, the motor 6 starts rotating, but when the start end detection switch S1 is not in the ON state, that is, the mounting plate 11 is not at the right end position and the protrusion 11b presses the switch S1. When the motor 6 is at an intermediate position where it is not being rotated, the motor 6 starts rotating in the opposite direction in response to a signal from the control surface and the road, 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, and therefore the screw pipes 9a and 9 screwed into the screw gears 2 and 3
b 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 so that the protruding piece 11b is moved to the right by the switch S.
Move to the right until + is closed. Then, when the protruding piece 11b closes the switch S, the motor 6 starts to rotate forward 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 20. Therefore, when the cassette C is lifted up, the cassette C4 is inserted into the cassette guide plate 9c of the moving table 9.

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 I6 is rotated clockwise via the worm vehicle weight 3, 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 grooves 17a, 18 of general teeth 17, 18.
a is not engaged. Therefore, the cassette deck 10 is in an open state (FIG. 8).

Then, the motor 12 rotates, the general tooth rotation gear I6 is rotated clockwise, and the pin 16b is moved 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. 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.

Furthermore, when the general tooth rotary gear I6 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 teeth 16a of the general tooth rotation gear 16, and rotation is prevented and the gear is stopped.

Then, the general tooth I7 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 cassette deck 10 is rotated in the closing direction via the operating rod 10a engaged with the groove 18b of the general tooth 18. The cassette C in the cassette guide plate 9c of the moving table 9 is attached to the cassette C. 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. In the state 1 in which the cassette C is attached, the pin 16c is inserted into the groove 18 of the general tooth 18.
The pin 16C closes the deck set detection switch S2. 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 force center 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 10. 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. Note that even when the cassette C is pushed up by the rotating lever 26 and is at the highest position, the back of the cassette C remains inside the cassette case 32, so that even when the cassette C is lowered, it descends smoothly. Then, 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, 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, so the cassette C A signal indicating that there is no regeneration 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 regeneration end state described above.

The above explanation of the operation was from the initial state when the cassette case 32 was set, 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 reverse 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. 11. 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 cent moon phase, and 34 indicates a display section that displays the operation 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 on the other hand puts the force set deck into the play state or 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 81 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 S+
Chart a) to determine whether the switch SL is on or not.
is off, the moving table 9 is not at the initial position and is stopped at the position at the previous end, and the motor 12 is rotated in the reverse direction (chart b) assuming that the cassette C is attached to the cassette deck 10. When the cassette is returned to the cassette case 32, the cassette return detection switch S3 is turned on (chart C).Then, the motor 6 is reversed (chart d) and the movable table 9 is moved backward. Then, when the start end detection switch S1 is turned on (chart e), the movable table 9 is set to the initial position, and the process moves to the next stage.

When the switch S1 is turned on, the program is started, and it is determined whether the tape to be played first is reserved (see chart f). As it moves, the light receiving element sends out the rotational speed of the motor 6 as a pulse signal (chart g). Then, a preset number of pulse signals are counted, that is, when the number of pulse signals when the cassette deck 10 reaches the first position in the cassette case 32 is counted, the motor 6 is stopped. (Chart h).

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). Then, when the count of this pulse signal matches the movement of the cassette deck 10 to the position set by reservation, the motor 6 is stopped (chart j
).

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

Here, if there is a cassette C, the cassette presence/absence detection switch S4 is turned on (chart N). And cassette C
When the mounting is completed, the switch for detecting the center of gravity S2
is turned on (chart m), and the cassette deck lO is put into the playback 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 reverse (chart p), and the cassette deck IO is activated.
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 I, 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 then proceeds to play the next cassette c.

C. Effects of the Invention] As described above, the present invention includes the rotation of a cassette deck which is attached to a movable base that moves on a cassette case and which mounts a cassette pulled out to the movable base by rotating;
The rotation of the rotary lever that pulls out the cassette in the cassette case is controlled separately by a general tooth rotating gear rotated by one motor and two general teeth meshing with this general tooth rotating gear. The timing of pulling out the cassette and attaching the cassette deck to the cassette is completely synchronized, so operation is reliable, the structure is simple, and it can be manufactured at low cost. Since this is carried out by controlling a switch using a pin provided on one of the general teeth, it is possible to reliably perform mode and control, and therefore the overall operation can be performed reliably and accurately. It is something that you have.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings 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, and FIG. The figure is a plan view, Figure 5 is a side view of the cassette and 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, and Figures 8 to 10 are Figure 5. 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, S+~S4...switch, 35...
control circuit. Figure 5 Figure 6 2e Figure 7 (-32f Figure 1O

Claims (2)

[Claims] (1) A cassette case that is removably inserted into the casing and stores a plurality of cassettes inside;
a moving table having a cassette guide that moves on the cassette case in response to a command from a control circuit; a cassette deck rotatably supported by the moving table and playing back a cassette in the cassette guide; The cassette in the cassette case at the moved position is pushed out from the bottom surface side, and is composed of a rotary lever for inserting into the cassette guide, one general tooth rotation gear, and two general teeth meshed with this, A general tooth mechanism in which a first general tooth that rotates first by rotation of a tooth rotation gear controls the rotation of the rotary lever, and a second general tooth that rotates next controls the rotation of the cassette deck. An automatic cassette playback device consisting of: (2) a cassette case that is removably inserted into the casing and stores a plurality of cassettes therein;
a moving table having a cassette guide that moves on the cassette case in response to a command from a control circuit; a cassette deck rotatably supported by the moving table and playing back a cassette in the cassette guide; The cassette in the cassette case at the moved position is pushed out from the bottom surface side, and is composed of a rotary lever for inserting into the cassette guide, one general tooth rotation gear, and two general teeth meshed with this, A general tooth mechanism that controls the rotation of the rotary lever with a first general tooth that rotates first by rotation of a tooth rotation gear, and controls the rotation of the cassette deck with a second general tooth that rotates next. An automatic cassette reproducing device comprising a switch that is turned on and off by a general tooth pin installed in the general tooth rotating gear of a general tooth mechanism to control a power motor of the general tooth rotating gear.