JPH0427001Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention relates to an auto-reverse type cassette drive device installed in audio equipment, etc., and particularly relates to an eject operation for ejecting a cassette tape using the driving force of a motor. Regarding equipment.

[Technical background and conventional technology]

The cassette drive devices installed in recent audio equipment are of the so-called logic control type, in which the switching and eject buttons on the operating surface are soft-touch type, and the force of the drive motor is used to perform various cassette operations when operated. is increasing.

Particularly, in the case where the eject operation is performed by motor driving force, the motor that drives the cassette is used to push out the cassette tape. In this case, the timing for starting the eject mechanism is generally determined by the operation of a solenoid.

[Problems with conventional technology]

However, with this conventional eject mechanism, as described above, a solenoid for starting the eject must be newly provided, which hinders the miniaturization of the cassette drive device.

[Purpose of this invention]

The present invention has been developed by focusing on the above-mentioned conventional problems, and is a cassette drive device that allows the eject operation using motor power to be performed with a simple mechanism and without the need for a new starting solenoid. The purpose is to provide an eject operation device.

[Structure of the present invention]

This invention consists of a head base that moves the magnetic head between a playing position where it touches the tape and a non-playing position where it moves away from the tape, a pair of flywheel gears that are constantly driven to rotate, and a pair of capstan shafts that rotate together with the flywheel gears. and a reel gear that rotates together with a pair of reel shafts, and a change gear that changes the running direction of the tape by switching the driving force to the pair of reel shafts, and an auto that controls the operation timing of the change gear. In an auto-reverse type cassette drive device equipped with a reverse solenoid, the head base is provided with a stopper that restricts the rotation of the change gear when the head base is in the play position. A play idler is provided that transmits the rotation of the flywheel gear to one reel gear and also transmits the rotation of the flywheel gear to the eject gear when the head base is in the non-play position, and is further slidably driven by the rotation of the eject gear to operate the eject mechanism. It is characterized in that an eject lever for starting is provided, and the driving timing of the eject lever by the eject gear is controlled by the auto reverse solenoid, and the solenoid for auto reverse switching is used. The timing for starting the eject mechanism is set accordingly.

[Example of the present invention]

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a plan view schematically showing the cassette loading surface of an auto-reverse type cassette drive, and Fig. 2 shows the eject mechanism, and the cassette drive is viewed from the direction of the arrow in Fig. 1. This corresponds to the figure shown in the figure. Figure 3 is a partial view of Figure 2 showing the eject operation, Figures 4 and 5 show the operating parts of the eject operating device for each operation, and the left half of Figure 1 is shown on the back side of the page. This figure corresponds to a back view of the cassette drive device.

(Basic configuration of cassette drive device) Reference numeral 1 in FIG. 1 is a reel shaft on the take-up side, and reference numeral 2 is a reel gear for driving this reel shaft 1. Further, 3 is a reel shaft on the supply side, and 4 is a reel gear for driving this reel shaft 3. Furthermore, a pair of capstan shafts 5 and 7 are provided at positions aligned with the respective reel shafts 1 and 3. A flywheel gear 6 is provided at the base of the capstan shaft 5, and another flywheel gear 8 is provided at the base of the capstan shaft 7. Both flywheel gears 6 and 8 are formed integrally with a flywheel (not shown). Power from a motor (not shown) is transmitted to these two flywheel gears, and as a result, the left capstan shaft 5
is driven counterclockwise, and the right capstan shaft 7 is driven clockwise at a constant speed. While the cassette drive is started, each capstan shaft 5 and 7 always rotates in the above-mentioned direction of rotation, whatever the operating mode. On the other hand, an idle gear 9 is provided between the pair of reel gears 2 and 4. This idle gear 9 is also driven by a motor, and is adapted to selectively mesh with both reel gears 2 and 4 by a swinging mechanism (not shown). When the idle gear 9 meshes with the reel gear 2 on the winding side, the reel gear 2 and the reel shaft 1 are driven counterclockwise at high speed. At this time, a tape fast-forward operation or cue operation is performed. Conversely, when the idle gear 9 meshes with the reel gear 4 on the supply side, the reel gear 4 and the reel shaft 3 are driven clockwise at high speed, and the tape is rewound or reviewed. In addition,
In the case of recording or reproducing operation, a play idler 21, which will be described later, connects the flywheel gear 6 and the reel gear 2, and the reel shaft 1 on the winding side is driven counterclockwise at low speed. At the same time, a pinch roller 10 is pressed against the left capstan shaft 5 to pinch the tape, so that the tape is fed to the left in the figure at a constant speed. In addition, when the tape is fed backwards by auto-reverse operation, the rotation of the flywheel gear 8 on the right side is caused by the rotation of the reel gear 4 on the supply side.
is transmitted to cause the reel shaft 3 to rotate clockwise at a low speed. At the same time, the pinch roller 11 on the right side presses against the capstan shaft 7, so that the tape is transferred rightward. Note that at this time, the left pinch roller 10 is separated from the capstan shaft 5.

Further, a head base 12 is provided on the loading surface of the cassette tape, and this head base 12
A magnetic head 13 is fixedly installed on top. Further, the head base 12 is guided by a pair of pins 14a and 14b and is provided so as to be movable in the direction of arrow AB. When the head base 12 moves in the A direction, the magnetic head 13 comes into contact with the tape and enters the play state, and when the head base 12 moves in the B direction, the magnetic head 13 separates from the tape and enters the non-play state. Note that the head base 12 is equipped with a spring 15a.
and 15b are always biased in the B direction. The force for moving the head base 12 in the A direction utilizes the rotational force of a motor that drives the flywheel gears 6, 8, etc. (detailed explanation of the mechanism will be omitted).

(Configuration of auto-reverse mechanism and eject operating device) Next, the configuration of the auto-reverse mechanism and eject operating device will be explained with reference to FIGS. 4 and 5. As mentioned above, FIGS. 4 and 5 are views of the left half of FIG. 1 viewed from the back side of the page.

A play idler 21 is interposed between the reel gear 2 and the flywheel gear 6. This play idler 21 is mounted on a pinch lever 22 so as to be freely rotatable. This pinch lever 22
is mounted so as to be able to swing about a common shaft with the flywheel gear 6 as a fulcrum. Moreover, a spring 23 is hung on this pinch lever 22,
Due to the elastic force of this spring 23, the pinch lever 22
is biased counterclockwise. Further, a pin 24 is fixed to the tip of the pinch lever 22. The play idler 21 is always engaged with the flywheel gear 6. And pinch lever 22
When the play idler 2 is rotated clockwise,
1 is adapted to mesh with reel gear 2 (the state shown in FIG. 4). On the other hand, one side of the notch formed on the left side (right side in FIGS. 4 and 5) of the head base 12 is a pressing side 12a. When the head base 12 moves in direction B, this pressing side 12a presses the pin 24 at the tip of the pinch lever 22, causing the pinch lever 22 to move to the fourth position.
It is designed to be rotated counterclockwise in the figures and in FIG. Further, a regulation groove 12b extending in the A direction is formed at the left end (right end in FIGS. 4 and 5) of this pressing side 12a.

In Figures 4 and 5, the flywheel gear 6
A change gear 25 is provided on the upper left side. Two missing teeth 25a and 25b are formed around the change gear 25 and are spaced apart from each other by 180°. When either of the tooth-missing portions 25a, 25b faces the flywheel gear 6, the rotation of the flywheel gear 6 is not transmitted to the chain gear 25, and the tooth-missing portion 25
Rotation of the flywheel gear 6 is transmitted to the change gear 25 through portions other than a and 25b. This chain gear 25 has a cam 2
7 are integrally provided. This cam 27 drives an auto-reverse mechanism (description of the mechanism is omitted). That is, when this cam 27 rotates 180 degrees during a play operation, it switches to either the reel shafts 1 or 3 to be driven, and correspondingly, either the pinch rollers 10 or 11 switches to the capstan shaft 5 or 7. The tape running direction is changed by selective pressure contact. Furthermore, a pair of pins 26a and 26b are fixed to the change gear 25. These two pins 26a and 26b are arranged at an interval of 180°. A stopper piece 12c is bent and formed approximately at the center of the head base 12. When the head base 12 moves in the direction B as shown in FIG.
5 to a position where it comes into contact with one pin 26b,
Rotation of the chain gear 25 is restricted.

Further, a change lever 28 is rotatably attached to the upper side in FIGS. 4 and 5. One arm of this change lever 28 is connected to the chassis 30.
Plunger 31a of solenoid 31 fixed to
and this arm is always biased clockwise by a spring 29. When the change lever 28 is rotated clockwise, the change lever 28 is actuated 2.
8a moves to a position where it abuts one pin 26a of the chain gear 25. A cam guide lever 32 is provided at a position aligned with the change lever 28. The cam guide lever 32 is rotatably provided around a shaft 33, and is always biased counterclockwise by a spring 34. Further, a pin 32a is fixed to the cam guide lever 32, and this pin 32a contacts one end of the cam 27, and continues to urge the change gear 25 counterclockwise.

Further, two intermediate gears 41 and 42 that mesh with each other are provided on the right side of FIGS. 4 and 5.
As shown in FIG. 5, when the pinch lever 22 rotates counterclockwise, the play idler 21
meshes with one intermediate gear 41, and the intermediate gear 41
is rotated clockwise in FIG. Further, an eject gear 43 is provided above the intermediate gear 42 so as to be freely rotatable. Two tooth-missing parts 43a and 43b are formed around the ejection gear 43 with an interval of 180 degrees between them. As shown in FIGS. 4 and 5, the small gear 42a integrated with the intermediate gear 42
3a, 43b, the rotation of the intermediate gear 42 is not transmitted to the eject gear 43, and when the eject gear 43 rotates a little, the small gear 42a meshes with the teeth of the eject gear 43 and The rotation of the gear 42 is transmitted to the eject gear 43. Further, this eject gear 43 has a pair of pins 4.
4a and 44b are fixedly installed at an interval of 180°. Further, the tip of the arm portion 45a of the lock lever 45 is opposed to one pin 44a or 44b on the eject gear 43. This lock lever 45 is rotatably provided around a pin 46 as a fulcrum. Further, this lock lever 45 is connected to the change lever 28 via a pin 47. When the solenoid 31 is energized, the change lever 28 is rotated counterclockwise by the plunger 31a, and this rotational force is transmitted to the lock lever 45, which is rotated clockwise. Also, solenoid 3
1 is in a non-energized state, the change lever 28 is rotated clockwise by the spring 29, and at this time the lock lever 45 is rotated counterclockwise.

Further, an eject lever 48 is provided on the side of the head base 12. This eject lever 48 is guided by a pair of pins 49a and 49b, and is adapted to move in the direction A-B independently of the head base 12. Furthermore, the eject lever 48 is always urged in the direction B by the spring 50. A locking piece 48a is bent and formed at the tip of the eject lever 48, and this locking piece 48a is adapted to be locked to the end side of the head base 12. Further, a pressing portion 48a is formed in the illustrated central portion of the eject lever 48. This pressing portion 48b faces the pin 44a or 44b on the eject gear 43. Further, a step 48d is provided next to the pressing portion 48b.
is formed. This step 48d also faces the pin 44a or 44b on the eject gear 43. Furthermore, an eject drive portion 48c is formed in a cutout on the side of the eject lever 48.

(Configuration of Eject Mechanism) Next, the configuration of the eject mechanism 60 for loading and unloading a cassette tape (not shown) will be explained as follows.
2 (corresponding to the arrow view in FIG. 1) and FIG. 3. Note that the chassis and side plates of the cassette drive device are not shown in these figures.

Reference numeral 61 shown in FIG. 2 is a guide holder.
A pair of guide holders 61 are provided on the left and right sides of the tape loading surface, and guide grooves 61a are formed on the opposing inner surfaces. The cassette tape is inserted from the bottom in FIG. 1 and from the right side in FIG. 2, so that both sides thereof are supported by each guide groove 61a. A pin 62a is fixed to the outer surface of each guide holder 61, and a pin 62b is fixed to the lower leg portion 61b of the guide holder 61.
These pins 62a, 6 are inserted into long holes (not shown) in the side plate.
2b is guided so that the guide holder 61 can move freely in the CD direction (vertical direction). When the guide holder 61 descends in the C direction, the cassette tape whose both sides are supported by the guide groove 61a is loaded onto the tape loading surface, and the pair of reels in the cassette tape engage with the respective reel shafts 1 and 3. The cassette tape is also positioned. Furthermore, levers 63 are provided on both side plates. This lever 6
3 is rotatably supported by a shaft 64 fixed to a side plate. Further, a spring 65 is applied to the lower arm 63a of the lever 63, and the lever 63 is biased clockwise in FIG. 2 by the spring 65. Further, an elongated hole 63b is formed at the tip of the lever 63, and this is engaged with one pin 62b on the guide holder 61. Further, an arcuate guide arm 63c is formed at the left end of the lever 63 in the drawing, and a guide step 63d is formed at the lower part of the inner surface thereof. Furthermore, an upper holder 66 is fixed to the upper part of the lever 63. Further, a slider 67 is provided on the side plate of the device together with the lever 63. This slider 67 can freely slide in the left-right direction (E-F) in FIG. This slider 67
A locking piece 67a is bent and formed at the lower part of the lever 63, and this is opposed to the position where the lever 63 is locked to the guide step 63d.

Furthermore, as shown in FIG. 1, push levers 68 and 69 are provided at the back of the tape loading surface. One of the extrusion levers 68 is rotatably supported by a pin 70, and the other extrusion lever 69 is rotatably supported by a pin 71. Furthermore, both push levers 68 and 69 are connected by a pin 72. This pin 72 is fixed to one extrusion lever 68, and the other extrusion lever 69 has an elongated hole (not shown) that engages with this pin 72. Due to the presence of this pin 72, both pushing levers 68 and 69 can be deformed from the parallel state shown in FIG. 1 into an X shape centered on pin 72. When it becomes this X shape,
An extrusion piece 68a that is bent and formed on the extrusion lever 68 and an extrusion piece 69a that is bent and formed on the extrusion lever 69.
protrudes in the direction G in FIG. 1 to push the cassette tape back toward the insertion slot. Also,
A spring 73 is hung on one end of one of the extrusion levers 69. Due to the elastic force of the spring 73, the push levers 68 and 69 are always urged in the direction of deforming into the X shape. Further, the left end of the push lever 68 in FIG.
(shown in detail in FIG. 3). Further, the drive piece 68b protrudes from the elongated hole 67b and is positioned so as to be able to engage with the tip of the guide arm 63c of the lever 63.

Next, the operation of the cassette drive device and the eject operating device having the above configuration will be explained.

(Cassette Tape Loading Operation) Before loading the cassette, each of the pushing levers 68 and 69 shown in FIG.
a is in a state of protruding in the G direction. At this time, the pressing lever 68 rotates clockwise about the pin 70, and the driving piece 68b at the left end in the figure moves in the direction of arrow F as shown in FIG. Therefore, the slider 67 is moved in the direction F by being pushed by the drive piece 68b, and the lock piece 67a of the slider 67 is latched onto the guide step 63d of the lever 63. At this time, the lever 63 is rotating counterclockwise, and the guide holder 61 is rising in the D direction.

The cassette tape is inserted into the guide groove 61a of the guide holder 61 in this raised state from the right direction in FIG. When the cassette tape is pushed in, its tips hit the pressing pieces 68a and 69a of the two pushing levers 68 and 69, pushing the pressing pieces 68a and 69a upward in FIG. 1 (in the opposite direction to G). As a result, the push levers 68 and 69 in the X state become parallel as shown in FIG.
At this time, the driving piece 68b at the end of the pressing lever 68
slides the slider 67 in the E direction. Then, the lock piece 67a of the slider 67 comes off the guide step 63d of the lever 63. Then, the restraining force exerted by the lock piece 67a is removed, and the lever 63 is rotated clockwise by the force of the spring 65.
The guide holder 61 descends in the direction C (state shown in FIG. 2). At this time, the cassette tape is set on the tape loading surface, and the reel shafts 1 and 3 are engaged in the two reels of the cassette tape.

(Play operation) After the cassette tape is loaded, when the play button or the record button (neither shown) is pressed, the play solenoid (not shown) in the cassette drive
is excited. Due to this timing, the force of the motor driving the reel shafts 1, 3, etc. is transmitted to the head base 12. Then, the head base 12 moves in the direction A, and the magnetic head 13 comes into contact with the tape inside the cassette tape.

FIG. 4 shows a play operation state in which the head base 12 is moving in the A direction. At this time, the pin 24 on the pinch lever 22 is not restrained by the head base 12 and rotates clockwise in FIG. 4, and the play idler 21 is engaged with the reel gear 2 on the winding side. Therefore, the rotation of the flywheel gear 6 is transmitted to the reel gear 2 via the play idler 21, and the reel gear 2 rotates clockwise in FIG. 4 (counterclockwise in FIG. 1).
to rotate the reel shaft 1 in the same direction.
Also, at this time, by another mechanism (not shown),
One pinch roller 10 is pressed against the capstan shaft 5. Therefore, the tape in the cassette tape is sent out to the left in FIG.
3, the playback or recording operation is performed.

Note that when the head base 12 is moving in the direction A as shown in FIG. I've learned not to accept it. On the other hand, the cam guide lever 32 is biased counterclockwise by the spring 34.
The pin 32a on this cam guide lever 32 contacts the cam 27 and urges the change gear 25 counterclockwise.
Since the pin 26a is received by the pin 26a, the chain gear 25 does not rotate in this state.

On the other hand, at this time, the locking piece 48a at the tip of the eject lever 48 comes into contact with the end side of the head base 12, and the eject lever 48 is moved in the direction of arrow A against the force of the spring 50. Therefore, the pressing portion 48b of the eject lever 48 is separated from the pin 44a on the eject gear 43, so that no force is applied to the eject gear 43.

Here, when the auto-reverse solenoid 31 is energized and the plunger 31a is sucked,
The change lever 28 rotates counterclockwise, and the lock lever 45 connected thereto rotates clockwise. This causes the operating arm 28a of the change lever 28 to come off the pin 26a. Then, the change gear 25 rotates counterclockwise by a small angle in response to the pressing force of the cam guide lever 32. Therefore, the flywheel gear 6, which has been opposed to the toothless portion 25a, meshes with the teeth around the change gear 25, and thereafter the change gear 25 is rotationally driven by the flywheel gear 6. Since the solenoid 31 becomes de-energized immediately after being energized once, the change lever 28 returns to its original state. Therefore, after the change gear 25 has rotated 180 degrees, the other pin 26b is connected to the operating arm 28 of the change lever 28.
The change gear 25 is stopped again by being locked at the tip of the a. In this way, the chain gear 25
During the 180° rotation, the cam 27 operates an auto-reverse mechanism (not shown), and an auto-reverse operation is performed. That is, the reel shaft 1 on the take-up side stops and the reel shaft 3 on the supply side is driven clockwise in FIG. 1 instead. At the same time, pinch roller 1
0 separates from the capstan shaft 5, and instead the other pinch roller 11 presses against the capstan shaft 7, and the tape is transferred to the right in FIG. and,
Recording and reproducing operations are performed on the track opposite to the first track.

As described above, the eject gear 43 does not receive force from the eject lever 48, and the tooth-missing portion 43a is connected to the small gear 42 which is integrated with the intermediate gear 42.
Since the eject gear 43 is opposed to the point a, even if the arm portion 45a of the lock lever 45 moves due to the suction force of the solenoid 31, the eject gear 43 does not rotate at all.

(Eject Operation) After the play operation is completed, the aforementioned play solenoid (not shown) becomes de-energized, and the head base 12 returns to the direction B by the force of the springs 15a and 15b (the state shown in FIG. 5). Therefore, the magnetic head 13 on the head base 12 is separated from the tape.

As shown in FIG. 5, when the head base 12 moves in the direction B, the end of the head base 12 separates from the locking piece 48a at the tip of the eject lever 48. Therefore, the eject lever 48 is pulled in the direction B by the spring 50. This force is transmitted from the pressing portion 48b at the center of the eject lever 48 to the pin 44a, and the eject gear 43 is always subjected to clockwise rotational force.

On the other hand, when the head base 12 moves in the direction B, the stopper piece 12c provided at the center reaches a position where it abuts the pin 26b on the change gear 25, so that the change gear 25 becomes unable to rotate.

Further, when the head base 12 moves in the direction B, the pressing piece 12a formed in the central notch of the head base 12 presses the pin 24 on the pinch lever 22. As a result, pinch lever 2
2 rotates counterclockwise once against the force of the spring 23. When the head base 12 is completely moved in the direction B, the pin 24 falls into the regulating groove 12b and the pinch lever 22 is positioned, as shown in FIG. At this time, play idler 21
meshes with the intermediate gear 41, and the rotation of the flywheel gear 6 is transmitted to the intermediate gear 41. Then, the power to the reel gear 2 is cut off. The rotation of the intermediate gear 41 is transmitted to the intermediate gear 42, and a small gear 42a integrated with the intermediate gear 42 rotates counterclockwise.

In this non-play state, when the auto-reverse solenoid 31 is energized, the plunger 3
1a drives the change lever 28 counterclockwise and the lock lever 45 clockwise. As mentioned above, since the change gear 25 is restricted by the stopper piece 12c on the head base 12, the operating arm 2 of the change lever 28
Even if 8a separates from pin 26a, change gear 2
5 never moves. On the other hand, when the arm portion 45a of the lock lever 45 separates from the pin 44a, the eject gear 43 pressed by the pressing portion 48b of the eject lever 48 rotates clockwise by a small angle. After that, the small gear 42a becomes the escape gear 4.
The eject gear 43 is driven clockwise by meshing with the teeth 3. Then, eject gear 4
The pin 44b on 3 hits the step 48d of the eject lever 48, and moves the eject lever 48 a long distance in the A direction. During this movement, the eject drive section 48 on the side of the eject lever 48
c presses the lower arm 63a of the lever 63 shown in FIG. 2 to the right. This causes the lever 63 to rotate counterclockwise in FIG. 2. Then, the lever 63 moves the guide holder 61 to D.
The cassette tape is lifted away from the reel shafts 1 and 3. Further, when the lever 63 rotates counterclockwise, the rear guide arm 63c and the guide step 63d descend. As a result, spring 73
The drive piece 68b at the end of the push lever 68, which is biased in the direction of forming an X shape, moves in the F direction as shown in FIG. 3, and the slider 67 also moves together. The lock piece 67 at the bottom of the slider 67
a engages with the guide step 63d of the lever 63,
In the state shown in FIG. 3, the lever 63 becomes locked. The movement of the driving piece 68b in the F direction means that the pushing levers 68 and 69 are displaced in an X shape by the force of the spring 73, and at this time, the cassette tape is inserted by the pressing pieces 68a and 69a. You will be pushed in the direction.

[Effects of this invention]

As described above, according to the present invention, when in the play state, the auto-reverse solenoid rotates the change gear to perform auto-reverse operation, and in the non-play state, the change gear is rotated by the head base that moves backward. In addition, the auto-reverse solenoid is used to rotate the eject gear and start the eject mechanism, so one solenoid can perform two operations. As a result, the structure of the cassette drive device can be simplified and it can be manufactured at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure is a plan view schematically showing the cassette loading surface of the cassette drive device, Figure 2 is a side view schematically showing the eject mechanism and corresponds to the view taken in the direction of the arrow in Figure 1, and Figure 3 shows the eject operation. Partial views of Figure 2, Figures 4 and 5 show the mechanisms for auto-reverse and eject operations by operation, and correspond to the left half of Figure 1 viewed from the back side of the page. FIG. 1, 3... Reel shaft, 2, 4... Reel gear,
5, 7... Capstan shaft, 6, 8... Flywheel gear, 12... Head base, 12c...
Stopper piece, 13...Magnetic head, 21...Play idler, 22...Pinch lever, 25...Change gear, 27...Cam, 28...Change lever, 31...Solenoid for auto reverse,
32...Cam guide lever, 43...Eject gear, 45...Lock lever, 48...Eject lever, 48c...Eject drive unit, 60...
...Eject mechanism.

Claims (1)

[Scope of utility model registration request] A head base that moves the magnetic head between a play position where it touches the tape and a non-play position where it leaves the tape, a pair of flywheel gears that are constantly driven to rotate, a pair of capstan shafts that rotate together with the flywheel gears, and a pair of capstan shafts that rotate together with the flywheel gears. A change gear that has a reel gear that rotates together with the reel shaft and changes the running direction of the tape by switching the driving force to the pair of reel shafts, and an auto-reverse solenoid that controls the operation timing of the change gear. In the auto-reverse type cassette drive device, the head base is provided with a stopper that restricts the rotation of the change gear when the head base is in the play position, and a stopper that restricts the rotation of the change gear when the head base is in the play position. A play idler is provided that transmits the rotation to one reel gear and also transmits the rotation of the flywheel gear to the eject gear when the head base is in the non-play position, and an eject that is slid and driven by the rotation of the eject gear to start the eject mechanism. 1. An eject operating device for a cassette drive device, characterized in that a lever is provided, and the drive timing of the eject lever by the eject gear is controlled by the auto-reverse solenoid.