JPS6030830Y2 - magnetic recording and playback machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a magnetic recording/playback device, and more specifically, in a magnetic recording/playback device having a so-called auto-eject means that automatically returns the eject lever, the device is operated for playback. When the fast forward or rewind operation is prioritized for song selection, when the desired song is selected, the fast forward or rewind lever is automatically activated using the plunger that activates the eject operation. Regarding the mechanism for returning.

The gist of the present invention is that the gear train group is arranged so as to receive the rotational torque of the motor that controls the drive of the reel shaft, capstan shaft, etc. of the device, and when the tape reaches the end, A solenoid plunger that is activated by detecting the end of the gear train is arranged, and one gear constituting the gear train group is connected to an arm that is activated by the excitation suction of the solenoid plunger to completely dry the clutch on the clutch piece. The torque transmission characteristics of the motor by the gear train group are transmitted to the final stage cam gear by the engagement of the clutch gear mentioned above, which operates only when the tape has traveled to the end. In a magnetic recording and reproducing machine in which the eject lever is ejected through the rotation of the final stage cam gear, the distal end of the rotary arm is arranged to dry completely in response to the drying operation of the rotary arm piece. A release lever having an engagement pin, a lock piece having a lock pin arranged to tilt to one side against a spring when the release lever is completely dried, and a lock that engages with the lock pin of the lock piece. The fast forwarding and rewinding levers are provided with a fast forwarding lever and a rewinding lever connected to a fast forwarding button and a rewinding button, each of which has a recess formed therein and an engaging edge that engages with an engaging pin of the release lever. When the button is pressed, the lock recesses of the fast forward and rewind levers and the lock pin of the lock piece engage with each other to lock and hold the lever, and the solenoid plunger is sucked by song selection detection, and the rolling arm piece and release lever are activated. By tilting, the above-mentioned lock piece is tilted, and the fast forward lever or rewind lever is unlocked and returned to its original state. At one time, the engaging edge of a fast-forward or rewind lever was engaged with the engaging pin of a release lever, and the lever was held in an intermediate position. The purpose of paternity is to provide a mechanism that uses a solenoid plunger that activates the eject operation to release only the fast forward or rewind lever when detecting a song selection.
When the fast forward or rewind lever is locked and a song selection is being detected, even if a solenoid plunger is used that forces the eject operation, the stroke of the solenoid plunger will be limited to prevent the auto eject or auto replay operation from occurring accidentally. The purpose is to provide a mechanism that will prevent this from happening.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a motor that controls the drive of the reel shaft and capstan shaft of the device, 2 is a pulley that receives the rotation of the motor via a belt, 3 is a first gear coaxial with pulley 2, and 4
and 5 are coaxial second and third gears, 6 and 7 are coaxial fourth and fifth gears, 8 is sixth gear, and 9 and 10 are coaxial seventh and eighth gears. , 11 is a final stage cam gear, and the final stage cam gear 11 is connected to an eject lever 13 via a crank link 12.

Of the above gear train group, the sixth gear 8 functions as a clutch gear.

That is, when the tape reaches the end, the solenoid plunger 14 is attracted, the rolling arm piece 15 is completely dried in the clockwise direction in FIG. 1, and in response to this operation, the clutch piece 16 is In FIG. 1, the motor rotates counterclockwise around the fulcrum 17, and the gear 8 meshes with both gears 7 and 9, transmitting the rotation of the motor 1 to the final stage cam gear 11, and Through the rotation of the cam gear 11, the eject lever 13 is moved upward as shown in FIG. Although they are in mesh with each other, they are held in a non-meshing state with respect to the gear 9, and the final stage cam gear 11 is in a non-rotating state.

The above describes a conventional gear unit type auto-eject mechanism, but the present invention is a distant relative of the above-mentioned object, and the following improvements have been made to such a mechanism.

That is, a release lever 20 having a retaining pin 19 near the tip 18 is marked so as to be completely dried around the pin 21 in response to the completely dry operation of the floating arm piece 15, and a lock having a lock pin 22 is provided. Slide the piece 23 onto the release lever 2.
The lock recess 26 is formed so as to be tilted toward one side with respect to the pin 24 against the spring 25 due to the absolute dryness of 0, and the lock recess 26 engages with the lock pin 22 of the lock piece 23. Engagement pin 19 of release lever 20
A fast-forwarding lever 28 and a rewinding L/bar 29 are provided, each having an engaging edge 27 formed thereon.

Since the figure shows the state in which the fast-forward lever 28 is on the top surface, the rewind lever 29, which has the same shape as the fast-forward lever 28, is located on the bottom surface of the fast-forward lever 28.

Next, the operation will be explained.

Assume that the device is now in a playback mode.

Next, it is assumed that a quick review operation or a cue operation is performed to select a song.

For example, assume that the fast forward lever 28 is pressed.

As shown in FIG. 2, when the fast-forwarding lever 28 is pressed down for eight strokes, the locking pieces 23 alternately rotate as shown by the arrow a, but the locking pins of the locking pieces 23 do not fit into the lock groove 26 of the fast-forwarding lever 28. 22 is engaged, and the fast forward lever 2
8 is held at the push button position, and the device enters the fast forward state.

At this time, the engagement pin 19 of the release lever 20 is in contact with the lower part of the engagement edge 27 of the fast-forwarding lever 28.

Next, when the desired song is selected, the solenoid plunger 14 is activated to suck P as shown in FIG.
Then, the rotating arm piece rotates clockwise, and in conjunction with this, the release lever 20 rotates counterclockwise about the fulcrum 21.

For this reason, the lock piece 23 is pushed by the tip 1B of the release lever 20, tilting against the spring 25, the engagement between the lock pin 22 and the lock recess 26 is released, and the fast-forwarding lever 28 returns to its original position.

However, even if the fast-forwarding lever 28 attempts to return to its original position by means of a return means such as a spring (not shown), the engagement pin 19 of the release lever 20 may
When the fast-forwarding lever 28 returns by a certain stroke S', the fast-forwarding lever 28 and the release lever 20 engage with each other by the engagement edge 27 and the pin 19, so that the release lever 20 is tilted. Alternatively, the fast forward lever 28 is held in that position and does not return completely to its original position.

Then, as the Tsuremade plunger 14 is demagnetized and returned to its original position, the rotating arm piece 15 and the release lever 20
When the lever returns to its original position, the engagement pin 19 of the release lever 20
Since the engagement of the fast-forwarding lever 2B is released, the fast-forwarding lever 28 completely returns to its original position as shown in FIG.

That is, the device is again in the reproducing operation state.

Although the above describes the return of the fast forward lever 28, the same applies to the rewind lever 29.

As described above, according to the present invention, when a desired song is selected by the song selection means, only the fast forward lever 28 or the rewind lever 29 is automatically returned by using the solenoid plunger 14 that forces the eject operation. It is something that can be done.

In addition, when the fast forward lever 28 detects a song selection while the rewind lever 29 is locked, the solenoid plunger 14
is excited, tilts the release lever 20, and presses the fast-forward lever 2.
8 or in the state where the rewind lever 29 is unlocked, the engagement pin 19 of the release lever 20 and the fast forward lever 28
or the engaging edges 27 of the rewinding lever 29 are in contact with each other,
Since the tilting stroke of the release lever 20 is regulated and ultimately the suction stroke of the solenoid plunger 14 is limited, the tilting of the floating arm piece 20 is also regulated to a certain limit as shown in FIG. 16 is also restricted to a certain limit, and the clutch gear 8 does not mesh with the gear 9.

Therefore, during this period, even if a solenoid plunger that performs an auto-eject operation is used, there is no possibility of an erroneous auto-eject operation, and the auto-eject operation is prevented.

As detailed above, according to the present invention, the gear train group is arranged so as to receive the rotational torque of the motor 1 that controls the drive of the reel shaft, capstan shaft, etc. of the loading device, and the tape runs to the end. An arm 15 is provided with a solenoid plunger 14 that detects the end of the gear and operates with excitation, and operates one gear constituting the gear train group with the excitation suction of the solenoid plunger 14.
Clutch gear 8 on clutch piece 16 that rotates in conjunction with
The torque transmission characteristics of the motor 1 by the gear train group are controlled by the engagement of the clutch gear 8, which applies the torque of the motor 1 only when the tape reaches its end, and transfers the torque to the final stage cam. In a magnetic recording/reproducing machine in which the eject lever is ejected through the rotation of the final stage cam gear 11 through the rotation of the final stage cam gear 11, the magnetic recording and reproducing machine is configured to rotate in response to the rotation of the rotation arm piece 15. A release lever 20 having an engagement pin 19 at the tip thereof is disposed, and a spring 2 is pushed to one side by the movement of the release lever 20.
a lock piece 23 having a lock pin 22 disposed so as to be tilted against the lock pin 2 of the lock piece 23;
2 is formed with a lock recess 26 that engages with the
Engagement edge 1 that engages with the engagement pin 19 of the release lever 20
A fast forward lever 28 and a rewind lever 29 are provided which are connected to a fast forward button and a rewind button having numbers 8 formed thereon. 23 lock pins 22 engage with each other to lock and hold the lever, and the solenoid plunger 14 is attracted by song selection detection, and the floating arm piece 15 and the release lever 20 are tilted, thereby tilting the lock piece 23. Then, the fast forwarding lever 28 or the rewinding lever 29 is unlocked and returned to its original position, and the release lever 20 is turned off for a period of time while the solenoid plunger 14 is deenergized and the rolling arm piece 15 and the release lever 20 return to their old states. The engagement edge 18 of the fast-forward or rewind lever 28 , 29 engages with the engagement pin 19 , and the lever 28 or 29 engages the release lever 20 .
Since the tilting stroke of the solenoid plunger 14 is regulated and the suction stroke of the solenoid plunger 14 is regulated, the solenoid plunger 14 which forces the eject operation can be used to detect music selection.
It is possible to provide a mechanism that can release only the fast forward or rewind lever 28.29, and also to release the fast forward or rewind lever 28.2.
9 is locked, the device is fast forwarded or rewinded, and when a song selection is detected, the lever limits the tilt stroke of the release lever 20, and ultimately limits the suction stroke of the solenoid plunger 14. Even if the AT solenoid plunger is used for the eject operation, there is no possibility that the eject operation will be performed by mistake.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the present invention, and FIG. 1 shows the state of the fast-forward lever 28 and the rewind lever 29 before they are operated, and FIG. 2 shows the fast-forward lever 28 and the rewind lever 29. A partial view showing where the button 28 is pressed;
Fig. 3 is a diagram showing the operation when the release lever is tilted based on the song selection detection to unlock the lock piece and the fast-forward lever. In the figure, 1 is the motor, 8 is the clutch gear, 11
is a cam gear, 13 is an eject lever, 14 is a solenoid plunger, 15 is a floating arm piece, 16 is a clutch piece, 18 is a release lever tip, 19 is a release lever engagement pin, 20 is a release lever, and 22 is a lock piece. pin,
23 is a lock piece, 26 is a lock recess, 27 is an engagement edge, 2
8 is a fast-forward lever, and 29 is a rewind lever.

Claims (1)

[Scope of utility model registration request] A gear train group is arranged so as to receive the rotational torque of the motor 1 that controls the drive of the reel shaft, capstan shaft, etc. of the device, and when the tape reaches the end, the end is detected and excitation is activated. solenoid plunger 14
, one gear constituting the gear train group is connected to the clutch gear 8 on the clutch piece 16 which is completely dry in conjunction with the arm 15 which is rotated by the excitation and suction of the solenoid plunger 14, and the gear train group is According to the torque transmission characteristics of the motor 1, the torque of the motor 1 is transmitted to the final stage cam gear 11 by the engagement of the clutch gear 8 which is activated as described above only when the tape reaches the end. In a magnetic recording and reproducing machine in which the eject lever is operated to eject through the rotating operation of the gear 11,
A release lever 20 having an engagement pin 19 at the tip, which is disposed so as to be completely dried in response to the rolling motion of the floating arm piece 15, and a release lever 20 having an engagement pin 19 at the tip, and the release lever 20 being completely dried, moves to one side against the spring 25. Lock pin 2 arranged to tilt
2, a lock recess 26 that engages with the lock pin 22 of the lock piece 23, and an engagement edge 18 that engages with the engagement pin 19 of the release lever 20. A fast forward lever 28 and a rewind lever 29 are provided which are connected to a fast forward button and a rewind button.
The lock pins 22 of the levers are engaged with each other to lock and hold the levers, and the solenoid plunger 14 is activated by detecting the music selection.
is attracted, and the rolling arm piece 15 and the release lever 20 tilt, thereby tilting the lock piece 23, unlocking the fast-forward lever 28 or the rewind lever 29, and returning it to its original state, so that the solenoid plunger 14 is energized. During a period during which the drifting arm piece 15 and the release lever 20 are returned to their old states after being demagnetized, the engagement edges 18 of the fast forward or rewind levers 28 and 29 are connected to the engagement pin 19 of the release lever 20.
is engaged, and the lever 28 or 29 releases the release lever 2.
A magnetic recording and reproducing machine in which the zero tilt stroke is regulated and the suction stroke of a solenoid plunger 14 is regulated.