JPS5815863B2 - Cassette type magnetic recording and reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is configured to pull out a magnetic tape stored in a tape pull-out type tape cassette such as an L cassette for recording or playback, and to draw the magnetic tape into the tape cassette. The present invention relates to a cassette-type magnetic recording and reproducing device configured to carry out the above operations by means of a magnetic tape retracting mechanism. The present invention relates to a magnetic recording/reproducing device.

・Recently, a tape pull-out type tape cassette called L-cassette has come into use, which solves the drawbacks of conventional tape cassettes.

This kind of tape drawer type tape cassette E is suitable.
Since it becomes possible to freely set the tape running route, it becomes possible to improve recording and reproducing performance.

By the way, the tape pulled out from the cassette must be pulled into the cassette by some means.

In this case, although it is not impossible to pull in the tape by manually rotating the reel, it is desirable to automatically pull in the tape using a tape retracting mechanism.

Conventional tape retraction methods include using a reel motor to wind more tape on one or both reels, and using a reel drive mechanism for retraction, that is, an independent tape retraction mechanism, to wind tape without using a reel motor. A method to increase this is proposed.

Although it has not been applied to L-cassettes, one of the latter methods is described in Japanese Patent Publication No. 50-22884, in which a pinion is fixed to the reel shaft and the stop operation lever is operated. There is a method in which a rack is engaged with a pinion, and the movement of the rack rotates the pinion and reel shaft to wind the tape.

However, the tape retracting mechanism described in the above-mentioned publication has a drawback in that the stop operation lever must be continuously pressed while the tape is being retracted in order to engage the rack with the pinion.

In addition, since the reel shaft is rotated and the tape is pulled in by the return operation of the tape pull-out mechanism, magnetic tape pull-in must start and end at the same time as the tape pull-out mechanism returns, so there is no risk of tape pull-in. The disadvantage is that it lacks arbitrariness (selection).

In addition, as disclosed in Japanese Patent Publication No. 45-36065 as a method for winding the tape when changing the tape position, linear motion of a movable plate for moving the tape guide post is converted into rotational motion. There is a method of spinning a reel stand.

However, in the method disclosed herein, the drive roller is always in contact with the idler for driving the reel stand, which increases the load on the movable plate.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to easily obtain a preparation state for tape retraction by a tape pull-out operation, to quickly and easily obtain a tape pull-in operation by a tape pull-in operation, and to arbitrarily determine the time point of the tape pull-in operation. The object of the present invention is to provide a cassette type magnetic recording/reproducing device that can perform the following functions.

The present invention for achieving the above object will be described with reference to the reference numerals in the drawings showing the embodiments for easy understanding.
A cassette type configured to pull out a magnetic tape 56 housed in a tape cassette 44 for recording or reproduction, and configured to draw the magnetic tape 56 into the cassette 44 by a magnetic tape pull-in mechanism E. In the magnetic recording and reproducing apparatus, the magnetic tape retracting mechanism is connected to a tape retracting driven body 41 coupled to the reel shaft 45 so as to rotate substantially integrally with the reel shaft 45, and a center of rotation. It has a pin 21 that acts as a guide as well as a guide, and a long hole 40 extending in the direction of a plane line connecting the pin 27 and the driven body 41. The magnetic tape 56 is arranged so as to be rotated and moved to be guided by the pin 27 from a position away from the driven body 41 to an engaged position with respect to the driven body 41, and is arranged to move the magnetic tape 56 to the cassette. 44 force), the magnetic tape 56 is rotated in one direction at the separated position, and by an operation of pulling the magnetic tape 56 into the cassette 44, the magnetic tape 56 is rotated in the other direction opposite to the one direction at the engaging position. and the driven body 4
a driver 29 that drives the driver 1; and one or more drivers that apply a biasing force in a direction to move the driver 29 to the engagement position and also apply a biasing force that rotates the driver in the other direction. a biasing device consisting of a spring 38, 39, and a biasing device that maintains the driving body 29 and the state in which it is rotated in the one direction against the spring 38, 39, and maintains the separated position of the driving body 29. The drive body 29 is prevented from moving, and is allowed to rotate in the other direction after the drive body 29 moves to the engagement position when drawing the magnetic tape 56 into the cassette 44. The present invention relates to a cassette-type magnetic recording/reproducing device characterized in that it is comprised of a blocking member that releases the blocking so that the blocking member releases the blocking.

According to the above invention, the driving body 2 only rotates the driven body 47.
9 is configured to engage with the driven body 41, the operation of rotating the driving body 29 in the first direction can be easily achieved without using the driven body 41 as a load.

Further, the movement of the driving body 29 in the direction of the driven body 41 and the rotation in the other direction are prevented by the blocking member, and by releasing this blocking, a predetermined retraction operation is performed by the biasing force of the springs 38 and 39. Since the configuration is such that the start time of the tape pull-in operation can be arbitrarily selected, the tape pull-in operation can be easily carried out at an optimal time.

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

1 to 11 show a part of a tape deck for recording or reproducing using an L cassette (tape pull-out type cassette) according to an embodiment of the present invention.

First, referring to FIG. 1, a support plate 2 is fixedly protruding from a metal substrate 1 at a plane angle, and a cassette holder 4 is pivotally attached to the support plate 2 by a pivot 3.

Since a spring 7 is engaged with the leg portion 6 of the side plate 5 of the cassette holder 4, the holder 4 is subjected to a biasing force in the clockwise direction (holder opening direction) in FIG.

Of course, the spring bias for opening the holder 4 may be performed by a torsion coil spring attached to the shaft 3 or the like.

A locking plate 8 is rotatably coupled to the side plate 5 of the holder 4, and the locking plate 8 allows the tape cassette to be moved between the tape cassette attachment/detachment position (holder open position) shown in FIG. 1 and the tape running position shown in FIG. A possible position (holder closed position) is determined.

That is, this locking plate 8 has a cutout recess 9 and a protrusion 10 as shown in an enlarged view in FIG. 3, and is inserted into the opening 11 of the base plate 1 shown in FIG. In the holder open position shown in FIG. At this position, the board 1 is inserted into the recess 9 of the locking plate, and the locking plate 8 and the holder 4 are positioned.

Note that simply inserting the locking plate 8 into the opening 11 makes it impossible to engage and disengage the board 1 and the locking plate recess 9, so this is done with the help of the locking rotating plate 12. There is.

The locking rotary plate 12 not only locks the locking plate 8 in the holder closed position as described above, but also rotates the tape to obtain the stop or pause state shown in FIGS. 6 to 11. It also has a function of locking the preparation sliding plate 13 in a non-operating position corresponding to opening of the holder.

As is particularly clear from FIGS. 1 and 2, this locking rotary plate 12 is provided with a raised portion 14, and a raised portion 14 and a control rotary plate 151 having various functions are fixedly connected to each other. A coil spring 17 is disposed between the lower pin 16 and the lower pin 16 .

The locking rotating plate 12 is supported by a pivot 18 as shown in FIGS. 6 to 11.

Therefore, a counterclockwise biasing force is applied to this locking rotating plate 12 in FIGS. 6 to 11.

However, when the control rotating plate 15 is in the cassette ejection position (holder open position) as shown in FIGS. 1 and 6, only zero or extremely weak biasing force is applied to the locking rotating plate 12 by the spring 17. Therefore, the locking plate 8 can move relatively freely.

However, when the control rotating plate 15 is in the stop or pause position and recording/playing position (holder closed position) shown in FIGS. , the counterclockwise spring bias against the locking rotating plate 12 becomes stronger, pressing the locking plate 8 downward and maintaining the state in which the board 1 is inserted into the locking plate recess 9.

Of course, one end of the coil spring 17 may be directly latched to the board 1 without being latched to the V-lower pin 16 of the control rotation plate 15, but in order to smoothly move the cassette holder 4, the control rotation plate 15 It is desirable to lock the

Since the locking rotation plate 12 is provided with an opening 19 and the locking plate 8 is inserted therein, the locking plate 8 can be locked by the locking rotation plate 12.

Figure 6 shows the eject state (holder open state), so
The locking plate 8 is not restricted by the locking rotation plate 12 and can freely move up and down, but in the stopped or paused state shown in FIG. 1 and in the play state shown in FIG. Even if 8 tries to move upward, that is, in the unlocking direction in which the recess 9 separates from the substrate 1, it is restricted by the edge of the opening 19 and cannot move.

Therefore, the eject state will not occur inadvertently.

In FIG. 6, a roller 21 disposed on the tape running preparation sliding plate 13 is engaged with a lock portion 20 consisting of a recessed portion provided at the upper left of the locking rotary plate 12. .

Fig. 6 shows the ejected state, so the engagement between the lock part 20 and the roller 21 has been achieved, but in Figs. 7 and 8, the holder 4 moves to the holder closed position and follows this. Since the lock rotating plate 12 is rotating counterclockwise,
It is in unlocked state.

Note that the V rising portion 14 of the locking rotating plate 12 is pressed by one end 22 of the control rotating plate 15 when the locking plate 8 is unlocked, and the first
The state shown in FIG. 0 changes to the state shown in FIG. 12.

As is clear from FIGS. 1 and 2, the legs 6t of the holder
A U-shaped groove 23 is provided here, into which a pin 25 of a connecting plate 24 is inserted.

Therefore, the connecting plate 24 slides following the rotation of the cassette holder 4.

In the eject state shown in FIGS. 1 and 6, the cassette holder 4 is released by the holder rotation spring 11, and the connecting plate 24 is pushed upward. In the closed state of the cassette holder 4 shown in FIG. 8, the connecting plate 24 is pushed down by the holder legs 6.

A pin 26 is implanted at the upper end of the connecting plate 24 engaged with the holder 4 in this manner, and a torsion spring 28 is disposed between this pin 26 and a pin 27 fixed to the substrate 1. .

The pin 26 of the connecting plate 24 also engages with the control rotation plate 15 and the tape retraction drive body 29.

As is most clearly seen in FIG. 5, the control rotating plate 15 includes, in addition to the pin 16 described above, a through hole 30, an arcuate groove 31, a lateral groove 32 protruding from the arcuate groove 31 by approximately an angle f, and a pin. 33 and spring locking protrusions 34 and 35 are provided.

Since the pin 21 is inserted into the upper penetrating portion 30, the control rotation plate 15 can rotate about the pin 21 as a pivot.

The arcuate groove 31 is a groove for allowing the drive body 29 to rotate without being restricted by the pin 26 during tape retraction, as shown in FIGS. 9, 10 and 11.

A lateral groove 32 continuous with the arcuate groove 31 is provided with a pin 26 as shown in FIGS.
The pin 33, which is a part into which the drive body 29 is inserted, and a part which prevents rotation of the drive body 29, is inserted into a predetermined pattern of openings 36 formed in the drive body 29, and the pin 33 is inserted into a predetermined pattern of openings 36 formed in the drive body 29.
9, and prevents the driving body 29 from rotating clockwise.

Since a coil spring 38 is disposed between the protrusion 34 of the control rotation plate 15 and the protrusion 31 of the driver 29, the two are also coupled together by this spring 38.

Further, as is clear from FIGS. 6 to 11, since an energy storage spring 39 is disposed between the protrusion 35 and the support plate 2, the control rotation plate 15 is biased clockwise by the spring 39. has been done.

Note that the fact that the control rotary plate 15 is biased by the spring 39 means that the driver 29 is also biased by the spring 39.

In addition to the aforementioned opening 36, the driving body 29fζ is provided with an elongated hole 40 that allows movement in the lateral direction, into which the pin 21 is inserted.

Therefore, the driving body 29 is movable in the left-right direction and also rotatable about the pin 21 as a pivot.

However, when the pin 26 is inserted into the horizontal groove 32 of the control rotation plate 15, the drive body 29 cannot be rotated.

Since the pin 26 of the connecting plate 24 and the pin 33 of the control rotating plate 15 are inserted into the opening 36 of the driving body 29, the driving body 29 moves under the constraints of both.

As best seen in FIG.
has an arc-shaped opening edge 41 corresponding to the arc-shaped groove 31 of the control rotation plate 15, and the drive body is moved in a state where the pin 26 rests on this opening edge 41 as shown in FIGS. 9 to 11. 29 rotates.

Further, the pin 33 of the control rotation plate 15 is in contact with the linear opening edge 42 shown in FIG. 5, and serves as a guide when the drive body 29 moves rightward.

Therefore, the linear opening edge 42 extends in substantially the same direction as the elongated hole 40.

The pin 33 also functions to rotate the driver 29 counterclockwise following the counterclockwise rotation of the control rotation plate 15.

The drive body 29 has an arcuate outer circumferential surface 43 with teeth to act as a tape retraction gear.

Tape supply side reel shaft 45 of a pair of reel shafts 45 and 46 that engages with the reel of the L cassette 44 shown by the chain line
A driven body 41 consisting of a pinion gear 1 is coupled to the drive body 41 .

In this device, the tape runs from the left reel shaft 45 to the right reel shaft 46 during recording or playback, but the cassette 44
Conversely, the tape pulled out from the tape is wound onto the supply reel (left reel) by counterclockwise rotation of the driven member 41.

Note that the rotation of the driven body 41 in the counterclockwise direction is performed by the driving body 291 that rotates clockwise in relation to the ejecting operation.

The tape running preparation sliding plate 13, which is partially exposed through the opening 11 of the substrate 1 in FIG. energized.

Therefore, when the roller 21 is removed from the lock part 20, the seventh
As shown in the drawings and FIG. 8, it moves to the right while being guided by the guide pin 49, and becomes ready to run the tape.

That is, the protrusion 50 of the sliding plate 13 is connected to the pinch roller arm 51.
Since the sliding plate 13 is provided adjacent to the pin 52 of
moves to the right, the protrusion 50 closes the opening 60 of the substrate 1.
, the pinch roller arm 51 is rotated a predetermined amount in the counterclockwise direction about the pivot 53, and the tape pull-out pin 55 provided adjacent to the pinch roller 54 pulls out the magnetic tape. 56 to the stop or pause position shown in FIG.

Although not shown in FIGS. 6 to 8, the cassette 4
A lid is provided to close the concave portion 51 of No. 4, and the lid is opened by the pinch roller arm 51 and the tape 56 is pulled out.

Since FIG. 1 shows a stopped or paused state, the pinch roller 54 is not in rolling contact with the capstan 58 yet.

Since the coil spring 59 is locked to the pinch roller arm 51, the pinch roller arm 51 receives a clockwise biasing force and rotates against this return spring bias.

A pin 61 is implanted at the other end of the pinch roller arm 51, and is inserted into a long hole 63 of the connecting rotation plate 62.

Therefore, when the pinch roller arm 51 rotates to the pose position shown in FIG. 1, the articulated rotating plate 62 rotates clockwise about the pivot shaft 64.

, an engagement pin 65 is provided at the left end of the joint rotation plate 62,
This is the opening 6 of the tape drawer and tension arm 66.
1 and functions like a stopper for the tension arm 66.

Therefore, when the articulated rotating plate 62 rotates, the tension arm 66 also rotates following this rotation under the bias of the spring 68, and the pin 69 provided at the tip of the tension arm 66 pulls out the tape 56 to the pose position. , the state shown in FIG. 1 will occur.

In this case, the pin 65, like the pin 55 of the pinch roller arm, opens a lid (not shown) that closes the recess 70 of the L-cassette 44.

The tension arm 66 is attached to the base plate 1 by a pivot shaft 11, and is biased counterclockwise by a coil spring 68 via a connecting rod 72.

Reference numeral 13 in FIGS. 6 to 11 is a back tension braking body, which is attached to the reel shaft 45 on the supply side during pause and recording/playback.
The brake drum 74 is connected to the brake drum 74 .

15 is a pivot of the brake body 73. Figures 6 to 11)
As is clear from the figure, since the spring 68 is locked to the pin 76 of the brake body 13, it functions as a spring for applying back tension and also as a spring for rotating the tension arm 66, and the spring 68 acts as a spring for rotating the tension arm 66. 66 operate in a coordinated manner.

An electromagnetic plunger 77 for play is provided on the lower side of the board 1 as shown by the dashed line in FIGS. 6 to 8, and a plunger pin 77 is provided. ? An L-shaped rotating plate 78 is provided to engage with the portion a.

The L-shaped rotating plate 18 is rotatable about a pivot 79 and is connected to the pinch roller arm 51 and the connecting rotating plate 62 by a pin 80 that is implanted at the other end and protrudes from an opening 81 in the base plate 1. engage.

Therefore, if the electromagnetic plunger 11 is energized in the pose state shown in FIG. As shown in the figure, the pinch roller 5 is attached to the capstan 58.
4 is transposed.

The connecting rotating plate 62 also rotates slightly clockwise, and the eighth
As shown in the figure, the tension arm 66 is no longer restricted by the pin 65.

In addition, erasing, recording and reproducing magnetic heads 82, 83 and 84
The magnetic tape 56 is in contact with the magnetic tape 56 in the pose state shown in FIG.

The eject sliding plate 85, a part of which is shown in FIGS. 1 and 2 and indicated by chain lines in FIGS. It is arranged to slide on the connecting plate 24 and the lever 91, and is biased downward in FIG. 6 by a spring 88.

This sliding plate 85 has an engaging roller 89 and an engaging barrel surface 90, and engages with a return lever 91 and pin 26 as shown in FIGS. 9 and 10 at the time of ejection.

That is, when the sliding plate 85 is slid upward by the injection operation as shown in FIG. 5
It is formed so that it can be removed from the groove 32 of the control rotation plate 15 shown in Figure E.

Further, the engagement roller 89 presses the inclined surface 92 of the lever 91 when the eject sliding plate 85 is slid upward, and rotates the lever 91 clockwise about the kite pin 86.

From this 1ζ, the other end 93 of the lever presses the roller 21 to the left, the tape running preparation sliding plate 13 moves to the left, and the roller 21 enters the lock portion 20 at the time of ejection.

Although illustration is omitted in FIGS. 6 to 11 to simplify the drawings, an electromagnetic plunger is connected to the sliding plate 13 to move it to the left, and the slide plate 13 is connected to an electromagnetic plunger for moving it to the left. Alternatively, during high-speed rewinding, this electromagnetic plunger is energized so that the pinch roller 54, tape 56, etc. are brought into the state shown in FIG.

Next, the operation in each mode will be explained.

First, to describe the operation when the cassette holder is closed, the L cassette 44 is inserted into the cassette holder 4 in the state shown in FIG. 1, and from the holder open state shown in FIGS. To bring the holder into the closed state shown in the figure, hold the holder 4.
Press the top surface with your hand.

As a result, the holder 4 is easily rotated, the substrate 1 enters the recess 9 of the locking plate 8, and the holder 4 is locked at the tape-travelable cassette position shown in FIG.

Further, in conjunction with the rotation of this holder, a power switch is turned on and the capstan motor begins to rotate.

Also, at the same time as this holder 4 rotates, the connecting plate 24
Since the pin 26 is engaged with the groove 32 of the control rotation plate 15, the control rotation plate 15 rotates counterclockwise in FIG. 6, and finally the seventh It will be in the state shown in the figure.

When the control rotary plate 15 rotates from FIG. 6 to FIG. 7, the spring 39 stretches and energy is stored in the spring 39.

Further, since the pin 33 presses the opening edge 42 of the drive body 29, the drive body 29 also rotates counterclockwise following the control rotation plate 15, and assumes the position shown in FIG.

The pin 26 is inserted into the groove 32 even in the position shown in FIG. 1, and the pin 26 is pushed to the left in FIG. 7 by the spring 28, and the pin 26 pushes the driver 29 to the left. Therefore, the rotation and rightward movement of the driver 29 and the rotation of the control rotation plate 15 are prevented, and the energy storage state of the spring 39 is maintained.

This completes the tape pull-in preparation.

When the cassette holder 4 is rotated, the energy for drawing the tape is stored in the spring 39 as described above, and at the same time, the locking rotating plate 12 is moved by the spring 11 due to the engagement of the concave portion 9 of the locking plate 8 with the base plate 1. can be rotated counterclockwise, that is, can be rotated by the depth of the recess 9,
The engagement between the lock portion 20 and the roller 21 is released, and the sliding plate 13 is moved to the right in FIG. 6 by the spring 48.

As a result, the pinch roller arm 51 as shown in FIG.
rotates counterclockwise, the articulated rotation plate 62 rotates clockwise, the tension arm 66 rotates counterclockwise by the spring 68, and the back tension braking body 13 rotates against the brake drum 14. 1, and the stopped or paused state shown in FIG. 1 is obtained.

That is, although the magnetic tape 56 is in contact with the heads 82, 83, and 84, the pinch roller 54 does not roll into contact with the capstan 58, so that a state is obtained in which the tape does not run.

In this apparatus, when the holder 4 is closed, the tape is automatically pulled out and the state shown in FIG. 1 is reached, so that the state shown in FIG. 1 is both a pause state and a stopped state.

When the play switch (not shown) is operated in the stopped or paused state shown in FIG. Rotate clockwise to remove capstan 5.
8 is pressed by the pinch roller 54.

At the same time, the articulated rotating plate 62 rotates clockwise, and the tension arm 66 is no longer restricted by the pin 65.

That is, the state shown in FIG. 8 is reached.

As a result, the tape 56 runs from left to right, and recording or reproduction is performed.

If the pause switch (not shown) is swept in the recording or playback state shown in FIG. 8, the electromagnetic plunger 17 becomes deenergized, mechanically returning to the state shown in FIG. 1, and only the electric circuit is turned on. It will be in a pause state.

If the pause switch is operated with the holder 4 closed, the mechanical state shown in FIG. 1 is maintained as is, and only the electric circuit is placed in the pause state (recording standby state).

When starting recording from the normal pose state, a play switch (not shown) is operated to activate the electromagnetic plunger 17, resulting in the state shown in FIG. 8.

Stop switch (not shown) in the recording or playback state as shown in Figure 8
When the electromagnetic plunger 11 is operated, the electromagnetic plunger 11 is deenergized and the state shown in FIG. 1 is achieved.

That is, the pinch roller arm 51 is rotated clockwise by the spring 59, the pinch roller 54 is separated from the capstan, and the articulated rotation plate 62 is rotated counterclockwise.

At this time, the tension arm 66 does not rotate.

This results in the stopped state shown in FIG.

If the fast forward or rewind switch (not shown) is swept in the recording or reproducing state shown in FIG. An electromagnetic plunger for high-speed feeding (not shown) is energized and enters a high-speed feeding state.

If you operate the high-speed feed switch in the stop state shown in Figure 1E, the pause state after a pause operation, or the recording/playback state,
In either case, after the mechanical fco is in the state shown in FIG. 7, the electromagnetic plunger for high-speed feeding is energized, and the sliding plate
3 moves to the left against the spring 48, the pressure on the pinch roller arm 51 by the protrusion 50 is released, and the arm 5
1 rotates clockwise, and the pinch roller 54 is housed in the four parts 57 of the cassette.

In addition, the articulated rotating plate 62 rotates counterclockwise in conjunction with the arm 51, and is suppressed by the pin 65, causing the tension arm 66 to rotate.
rotates clockwise.

The pin 69 of the tension arm 66 fits into the recess 70.

Also, following the rotation of the tension arm 66, the braking body 13
rotates away from the drum 14.

As a result, the tape running system becomes the state shown in Figure 6E.
After that, the supply side reel shaft 45 or the increase side reel shaft 46
is rotated at high speed by a motor.

Therefore, high-speed feeding is performed without the tape 56 being pulled out from the cassette 44, and the tape runs extremely smoothly with little resistance.

If the stop switch is pressed repeatedly in the fast forward or rewind state, the high speed electromagnetic plunger (not shown) is deenergized, and the spring 48 moves the sliding plate 13 in the right direction f in FIG. As a result, the pinch roller arm 51 rotates counterclockwise, the rotation plate 62 rotates clockwise, the tension arm 66 rotates counterclockwise, and the brake body 73 rotates against the drum 7.
4 and come into the stopped state as shown in FIG.

In addition, if a play switch (not shown) is operated in the high-speed feed state, the high-speed feed electromagnetic plunger is de-energized and becomes the state shown in FIG. 7, and then the play electromagnetic plunger 11 is energized to become the play state shown in FIG. 8. Become.

If a pause switch (not shown) is operated in a high-speed feed state, the high-speed feed electromagnetic plunger is deenergized, mechanically entering the state shown in FIG. 1, and electrically forming a pause circuit.

Since this device is configured so that it can be ejected only when it is stopped, the eject operation (cassette ejection operation) is performed when the device is mechanically in the state shown in FIG.

If the eject sliding plate 85 is moved upward against the return spring 88 by the eject operation in the stopped state shown in FIG.
The engagement roller 89 presses the tilting surface 92 of the lever 91, and the lever 91 rotates clockwise f.

As a result, the roller 21 is pressed by the other end of the lever 91, the sliding plate 13 moves to the left in FIG. , the tension arm 66 clockwise, and the brake body 13 clockwise.
It will be in the state shown in the figure.

When the eject operation is performed, another operation occurs in addition to the above-mentioned operation.

That is, when the eject sliding plate 85 moves upward, the body surface 90 of the sliding plate 85 presses the pin 26 approximately to the right in FIG.

In FIG. 7, the pin 26 enters into the groove 32 of the control rotation plate 15 to keep the control rotation plate 15 and the driver 29 in a blocking state, but the pin 26 is pushed from the groove 32 by the printing surface 90. The connecting plate 24 is rotated slightly clockwise against the spring 28 so that it is pulled out, and the state shown in FIG. 9 is reached.

At the same time, the driving body 29, which had been blocked by the pin 26 of the groove 32, moves toward the driven body (approximately to the right) by an amount corresponding to the amount of movement of the pin 26, and the driving body 29 consisting of a gear and the gear The driven body 47 consisting of the two is in mesh with each other.

The driving body 29 is guided by the pin 27 inserted into the elongated hole 40 and the pin 33 that comes into contact with the opening edge 421 to move laterally.

Therefore, the drive body 29 does not rotate while the pins 27 and 33 are working as guide bodies.

As shown in FIG. 9, when the pin 26 is disengaged from the horizontal groove 32 of the control rotation plate 15, the clockwise rotation of the control rotation plate 15 is no longer blocked by the pin 26. is rotated clockwise by the energy storage spring 39, resulting in the state shown in FIG.

At the same time, the driving body 29, which is connected to the control rotation plate 15 by the Cζ spring 38, rotates clockwise while being pulled by the spring 38.

At this time, the pin 33 continues to rotate while contacting the opening edge 42, and the control rotation plate 15 and the driving body 29 rotate substantially 1ζ integrally.

When the teeth of the driving body 29 and the teeth of the driven body 47 mesh and the driving body 29 rotates clockwise, the driven body 41 rotates counterclockwise, and the reel shaft 45 also rotates counterclockwise. Rotate.

As a result, as shown in FIG. 7, the drawn-out tape 56 is wound around the supply reel (left reel) and drawn into the cassette 44.

In this device, only the reel on the winding side is braked by the stop operation, so even if the tape is wound on the left reel by the rotation of the supply reel shaft 45, the right reel is driven. Never.

Also, since the tape is pulled out from the supply side (left) reel while the increasing side (right) reel is braked, the heads 82, 83
．． The position of the tape before the tape is pulled in with respect to 84 can be matched with the position of the tape at the tape pull-out stock.

When the tape retraction by the supply reel is completed, the left reel and reel shaft 45 are braked by the tape 56, and the driven body 41 no longer rotates.

Therefore, rotation of the driving body 29 is also prevented, and for example, the 10th
The rotation of the driving body 29 stops at the position shown in the figure.

The drive body 29 and the control rotating plate 15 are connected by a spring 38, and the opening 36 is shaped to allow the pin 33 to move clockwise. The spring 39 continues to rotate due to the release of stored energy, and the first
The situation will be as shown in Figure 1.

At this time, since the driving body 29 does not rotate, the spring 38 is extended and a part of the energy of the spring 39 is transferred thereto.

As the rotation of the control rotation plate 15 progresses as described above, the left end of the control rotation plate 15 pushes up the locking rotation plate 12 as shown in FIG. 11, and thereby the locking plate 8 of the holder is also pushed up. , the recess 9 of the locking plate 8 separates from the base plate 1, and the cassette holder 4 starts rotating by the spring 1 in the opening direction shown in FIG.

Further, since the locking rotating plate 12 rotates clockwise and the sliding plate 13 moves to the left as described above, the engagement between the recessed locking portion 20 and the roller 21 is established.

The sliding plate 13 is locked in the position shown in FIG.

When the locking plate 8 is pushed up by the clockwise rotation of the locking rotating plate 12 and the lock by the recess 9 is released, the holder 4 is rotated clockwise by the spring 7 as shown in FIG. becomes open.

At the same time, following the rotation of the holder 4, the connecting plate 24, which engages with the holder 4 with the pin 25, starts moving toward the position shown in FIGS. 1 and 6.

Further, when the holder 4 starts rotating in the opening direction, the reel hub of the cassette separates from the reel shaft 45,46.

When the reel hub is detached from the reel shafts 45 and 46 in this way, the reel shaft 45 is no longer braked by the tape 56, allowing the reel shaft 45 to rotate.
8 further rotates the driver 29 clockwise.

That is, the driving body 29 further rotates clockwise from the state shown in FIG. 11.

If the driving body 29 rotates out of rotation, the driven body 41 and the reel shaft 4
5 also rotates, but this rotation is unrelated to the winding of the tape.

At the same time as this rotation, the pin 26 moves upward in the arcuate groove 31 and reaches the upper end of the groove 31, that is, the entrance of the groove 32, after the rotation of the driver 29 is completed.

When the pin 26 reaches the upper end of the groove 31, the upward movement of the pin 26 is restricted, but the leftward movement becomes possible, and the spring 28 causes the pin 26 to move leftward along the groove 32. Since the pin 26 is engaged with the edge of the opening 36 of the driver 29, the driver 29 also moves to the left together with the pin 26, resulting in the state shown in FIG.

As a result, the driving body is separated from the driven body 47, and the pin 26 enters the groove 32, so that the movement of the driving body 29 and the control rotation plate 15 is locked.

Further, in conjunction with the rotation of the holder 4 described above, the power switch is turned off, the rotation of the motor is stopped, and the rotation of the capstan 58 is also stopped.

Note that the rotation of the cassette holder 4 is restricted at the position where the protrusion 10 of the locking plate 8 engages with the substrate 1.

In this device, it is of course possible to hold the eject operation, that is, the operation of moving the eject sliding plate 85 upward until the ejection is completed, but if the operation is continued until the pin 26 is disengaged from the groove 32, it is possible to remove the tape. The retraction is complete.

Further, since the roller 21 moved leftward by the lever 91 is almost held at the moved position due to the delay, it engages with the rotating plate 12, locking the sliding plate 13, and ejecting the cassette. will also be done.

However, if the ejecting operation is stopped before the pin 26 leaves the groove 32, the state returns to the stop mode before the ejecting operation.

Further, while maintaining the eject operation as shown in FIG. 6, that is, while moving the eject sliding plate 85 upward, rotate the cassette holder 4 counterclockwise as shown in FIG.
When the user tries to close the locking plate 8, the locking plate 8 enters into the base plate 1.

On the other hand, the connecting plate 24 moves downward, and the control rotating plate 15 and the driver 29, which are engaged by the pin 26, start rotating counterclockwise.

The body surface 90 of the sliding plate 85 comes into contact with the pin 26 and moves the pin 26 in the direction E in which it leaves the groove 32.

When the pin 26 is completely removed from the groove 32, the counterclockwise rotation of the control rotation plate 15 and the driver 29 is completed.

Since the driving body 29 and the driven body 41 are engaged when the pin 26 leaves the groove 32, the control rotation plate 15 and the driving body 29 are rotated clockwise by the spring 39 after the pin 26 leaves the groove 32. , and the driven body 41 is rotated counterclockwise.

Furthermore, the locking rotating plate 12 is pushed up by the clockwise rotation of the control rotating plate 15.

Since the operation up to this point is completed instantaneously, the rotation of the holder 4 causes the locking plate 8 to gradually enter into the board 1 and the recess 9 to close the board 1.
The raised portion 14 of the locking rotary plate 12 is located at the part of the base plate that engages with the recess 9 before reaching the recess 9 , making it impossible for the recess 9 to engage with the base plate 1 .

Therefore, when the suppression of the cassette holder 4 is released, the holder 4
is opened again by spring 7.

The connecting plate 24 moves upward in conjunction with the opening of the holder, the pin 26 also moves along the groove 31, and when it reaches the entrance of the groove 32, the pin 26 is moved by the spring 28f to the groove 32.
At the same time, the driving body 29 separates from the driven body 41.

Therefore, even if you mistakenly try to close the cassette holder 4 while the eject operation is still being performed, the cassette holder 4 cannot be closed.

In order to close the holder 4, it is necessary to release the eject operation and press down the sliding plate 85.

As is clear from the above description, in the cassette type magnetic recording and reproducing apparatus according to the first embodiment of the present invention, the tape retraction mechanism is comprised of a driven body 41, a driving body 29, and a pin 27 that serves as a guide body. & 33, a spring 38 that acts as a biasing device for the driving body 29, and a pin 26, spring 28, and pin 33 that acts as a blocking device for movement and rotation of the driving body 29, so the pin 26 Drive body 29 by a blocking device consisting of etc.
Just by releasing the block, the tape will be pulled in.
The tape can be automatically drawn into the cassette without continuing the tape drawing operation.

Therefore, operability is improved. Further, since the tape can be drawn in once the blocking by the blocking device such as the pin 26 is released, the tape drawing point can be freely selected, and the tape can be drawn in at the optimum point.

Furthermore, since the tape is drawn in by rotating the drive body 29, the device can be made smaller compared to a device in which the tape is drawn in by linear motion.

In addition, in the apparatus of this embodiment, the locking rotating plate 12 is rotated by the control rotating plate 15 that constitutes the tape retracting mechanism.
Since the locking plate 8 is unlocked, the tape can be reliably drawn in and ejected in an orderly manner.

That is, the cassette can be ejected after the magnetic tape has been completely drawn in, or even during the drawing process, at a point where no problem occurs.

Therefore, problems such as tape damage and cassette damage do not occur.

Further, by associating the tape retracting mechanism with the ejecting mechanism as described above, it is possible not only to use a single operating section such as an operating lever, but also to shorten the stroke of the operating section.

In other words, compared to a device in which the tape is pulled in during the first stage operation and ejected during the second stage operation, the tape can be pulled in and ejected during the first stage operation.
The stroke becomes shorter.

Furthermore, in the apparatus of this embodiment, an energy storage spring 39 is provided, and energy is stored in the spring 39 by the movement of the holder 4 from the cassette attachment/detachment position (holder open position) force S to the tape traveling position (holder closed position). Accumulate this spring 39
Since the drive body 29, driven body 41, etc. which function as a tape pull-in reel rotation mechanism are operated using the stored energy as a power source, the tape pull-in operation can be performed extremely easily.

In other words, the tape is not drawn in by force of operation, but by the stored energy, improving operability.

Note that energy must be stored in the spring 39 when the holder is closed, but the holder 4 is large compared to the operation button, and the risk of action for energy storage must be set to a value that is mechanically advantageous. Therefore, the movement of the holder does not become so heavy due to the energy storage of the spring 39.

Furthermore, in the device of this embodiment, the driving body 29 and the control rotating plate 15
are connected by a spring 38, and the force of the spring 39 is not transmitted to the driving body 29. When the tape is drawn in, the driving body 29 stops rotating due to the braking of the tape, and only the control rotating plate 15 rotates. Continue the movement.

Therefore, there is no risk of damage to the tape due to excessive force being applied to the tape after the tape has been drawn.

If the drive body 29 were to always rotate at a constant angle, the amount of tape retraction would vary depending on the difference in the diameter of the tape on the reel, resulting in insufficient tape retraction or excessive force being applied to the tape. may be added, but
This problem does not occur with this device.

Furthermore, since the control rotating plate 15 rotates clockwise without being restricted by the driver 29, the locking rotating plate 12 can be reliably rotated at a predetermined time and ejection can be reliably started.

Furthermore, since the control rotation plate 15 is provided, the drive body 29 can be moved and rotated in the lateral direction accurately and smoothly.

Furthermore, in the apparatus of this embodiment, the reel on the increasing side is braked when the reel is stopped, the tape is pulled in from the reel on the supply side, and the tape is pulled out from the reel on the supply side when the holder is closed, so that the magnetic head 82. The tape position relative to 83°84 can be matched before and after retraction.

Furthermore, in the device of this embodiment, the tape 56 is pulled out to the stop or pause position when the holder 4 is closed, and is pulled into the tape cassette when the holder 4 is closed, so recording or playback can be started quickly. It becomes possible to do so.

In addition, in modes other than the high-speed feed mode, the tape is maintained in a state where it is pulled out from the cassette, so it is essential to switch modes quickly.

Additionally, the number of times the tape must be withdrawn and retracted is reduced, resulting in less deterioration of the magnetic tape and the withdrawing and retracting mechanism.

In addition, the apparatus of this embodiment is in a high-speed feeding state at the tape position and pinch roller position shown in FIG. 6, and is in a stopped or paused state at the tape position and pinch roller position shown in FIG.
Since the recording or playback state is set at the tape position and pinch roller position shown in Figure 8, the magnetic tape runs within the cassette during high-speed feeding, the running resistance is minimal, and the life of the magnetic tape and the motor that is the drive source are maintained. It is possible to increase the length of the magnetic head, and to minimize wear and tear on the magnetic head.

Furthermore, since the position of the pinch roller 54 is the same in the stop mode and the pause mode, the mechanism for operating the pinch roller can be simplified.

Further, it is possible to obtain fζ high-speed feeding without providing a special tape shifter or the like.

□Also, if the pinch roller is set at a stop position within the tape cassette, the magnetic tape must be pulled in each time the magnetic tape is stopped in order to remove the walnuts, but this is not necessary with this device.

Also, when recording or playing from a stopped or paused state,
Operation is easy because the pinch roller is moved from a position close to the capstan.

Further, when the pinch roller is brought into contact with the capstan, the magnetic tape does not bounce.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above description and can be further modified.

For example, in the embodiment, the driving body 29 and the driven body 41 are coupled by gear meshing, but they may be coupled by friction or the like.

Further, in the embodiment, the biasing device for lateral movement and rotation of the drive body 29 is substantially constituted by a single spring 38, but the first spring for lateral movement of the drive body 29 and the rotation A second spring for dynamic operation may be provided and the two may be used for biasing.

Further, in the embodiment, the blocking device includes the spring 28, the pin 26, and the
3 to prevent lateral movement and rotation,
It is also possible to block the biasing of the driver 29 by the spring 38f.

Further, in the embodiment, the power source as a biasing device is a spring 39, and this energy is applied to the drive body 29 via the control rotation plate 15, but one end of the spring 38 is fixed to the control rotation plate 15. It is also possible to fix the Zlζ substrate 1f and use the spring 38 as a power source spring.

Further, in the embodiment, the guide body is constructed with the help of the control rotary plate 15, but the guide body is constructed with the help of the control rotary plate 15.
A guide pin or the like may be provided to guide the drive body 29 in the lateral direction.

Further, in the embodiment, the blocking device is connected to the control rotating plate 15 and the connecting plate 24.
However, rotation restriction and movement control may be performed using pins, protrusions, etc., without the aid of these.

[Brief explanation of drawings]

1 to 11 show a cassette-type magnetic recording/reproducing device according to an embodiment of the present invention, FIG. 1 is a side view showing a part of the device with the holder open, and FIG. 2 is a side view showing a part of the device with the holder open. A side view showing a part of the device in the closed state, Figure 3 is an enlarged view showing the locking plate, Figure 4 is the connecting plate, NtJ'F diagram, and Figure 5 is the drive body and control rotating plate. 6 is a front view showing the device in the ejected state, FIG. 1 is a front view showing the device in the stopped or paused state, and FIG. 8 is the front view showing the device in the recording or playback state. FIGS. 9, 10, and 11 are front views sequentially showing the state of the device during the ejection process. In addition, in the reference numerals used in the drawings, 1 is the board, 4 is the cassette holder, 6 is the leg, 7 is the spring, 8 is the locking plate, and 9
10 is a concave portion, 10 is a protruding portion, 12 is a rotating plate for locking, 13 is a sliding plate for tape running preparation, 15 is a control rotating plate, 11 is a coil spring, 20 is a locking portion, 21 is a roller, and 24 is a connecting plate , 26° 21 is a pin, 28 is a spring, 29 is a tape retracting drive body, 31 is an arcuate groove, 32 is a lateral groove,
33 is a pin, 38 is a coil spring, 39 is an energy storage spring, 40 is a long hole, 44 is a cassette, 41 is a driven body, 5
1 is a pinch roller arm, 54 is a pinch roller, 55 is a pull-out pin, 56 is a magnetic tape, 58 is a capstan, 77 is an electromagnetic plunger, 85 is an eject sliding plate, 8
9 is an engagement roller, 90 is an engagement barrel surface, and 91 is a return lever.

Claims (1)

[Scope of Claims] 1. A magnetic tape 56 stored in a tape cassette 44 is drawn out for recording or reproduction, and the magnetic tape 56 is drawn into the cassette 44 by a magnetic tape drawing mechanism. In the cassette type magnetic recording and reproducing device configured as above, the magnetic tape retracting mechanism includes a tape retracting driven body 47 coupled to the reel shaft 45 so as to rotate substantially integrally with the reel shaft 45. , a pin 21 that serves as a center of rotation as well as a guide, and a long hole 40 extending in the direction of a plane connecting the pin 27 and the driven body 41; It is arranged so as to rotate around a pin 21, and is arranged so as to be guided by the pin 27 to move from a separated position with respect to the driven body 47 to a locked position with respect to the driven body 47, and the magnetic By pulling out the tape 56 from the cassette 44, it rotates in one direction at the separated position, and by pulling the magnetic tape 56 into the cassette 44, it rotates in the other direction opposite to the one direction at the engaged position. a driver 29 that rotates to drive the driven body 41; and a driver 29 that applies a biasing force in a direction that moves the driver 29 to the engagement position and rotates the driver in the other direction. One or more springs providing a biasing force 38.39
a biasing device consisting of a biasing device 38 .
E prevents the movement of the drive body 29 so as to maintain the state in which the drive body 29 is rotated in the one direction against the magnetic tape 39 and maintain the separated position of the drive body 29.
6 into the cassette 44, the driver 29
A cassette type magnetic recording/reproducing device comprising: a blocking member that releases the blocking so as to allow rotation in the other direction after moving to the engaging position. 2 The blocking member includes a lateral groove portion 32 that controls movement of the drive body 29 between the separated position and the engaged position.
and a control rotation plate 15 coupled to the drive body 29 and having an arcuate groove 31 for controlling rotation of the drive body 29;
The cassette type magnetic recording/reproducing device according to claim 1, further comprising a movable pin (26) selectively located in the horizontal groove portion (32) and the arcuate groove portion (31).