JPS5952445A - Tape recorder - Google Patents

Abstract

PURPOSE:To attain accurate and smooth CUE and REVIEW(program search), by providing additionally a shaking operation to a head position control section controlled with a motor drive assist mechanism so as to be forwarded and backwarded for presscribed number of turns at the CUE and REVEW(program search). CONSTITUTION:Since the 2nd contact 96B of a head position during setting switch 96 is turned from OFF to ON in the process where a head slider 48 is restored once from the reproducing position in the stop direction, a transistor Q5 is turned on again. Thus, sine a forward specified current is applied again to an assist motor 42, the head slider 48 is shifted again to the reproducing position. The assist motor 42 is stopped again, then the head slider 48 is restored to the stop position. While the retrogressing of the head slider 48 in this way for some time, the head slider 48 is converged into a suitable position for reaching the CUE state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a tape recorder device equipped with a motor drive assist mechanism.

[Technical Background of the Invention and Intervals; Arc Point] Recently, in tape recorder devices, the Herad slider, which serves as a head position control member, is moved to a predetermined position by a dedicated motor for unloading, instead of the conventional manual method. A device equipped with a so-called motor drive assist mechanism that enables control has been developed.

This has the advantage that it can be operated in a so-called soft-tap operation type and can be organically combined with an auto-reverse at wit or the like.

By the way, what is required of this type of tape recorder device is to ensure the sliding control of the head slide according to various operating conditions and to ultimately set the head position to an accurate position corresponding to the operating condition. It is possible.

However, the conventional motor drive assist mechanisms have not always been able to fully satisfy the above-mentioned requirements, and have had various disadvantages.

For example, it is difficult to easily set, detect, and adjust the head position that is controlled by the head slider. For this reason, accurate and smooth cueing and review (cue cue) operations, etc., tend to be hindered.

In this case, it goes without saying that setting the head position includes setting it to an operating state and setting it from an operating state to a stopped state.

However, in order to set the head position from the operating state to the stopped state, it is required to smoothly and reliably bring the head slide to the operating state in any case, and also to provide assistance for measures such as reducing voltage. There is a need to prevent the effective torque margin of the motor from being reduced.

[Purpose of the invention]

Therefore, this invention has been made with the above points in mind.In particular, the present invention has been made with the above points in mind.
By accompanying a rocking motion that moves the head forward and backward a predetermined number of times during operation, the amount of retraction of the head position can be easily controlled to ensure that it is in the correct position, thereby allowing accurate and smooth cueing and reviewing ( The object of the present invention is to provide a tape recorder device which improves the operation (f output) and has an extremely good performance.

[Summary of the invention]

That is, the tape recorder device according to the present invention includes a motor drive assist mechanism that moves the head position control member from the stop position to the operating position when the assist motor is driven, and a motor drive assist mechanism that moves the head position control member from the operating position when the assist motor is stopped. a return mechanism for moving the head to a stop position; a head position detection switch that engages with the head position control member and detects the head position; and an assist motor control circuit that repeatedly controls the drive state a predetermined number of times.

[Embodiments of the invention]

First, before describing one embodiment of the present invention, a basic example of a tape recorder device to which the present invention is applied will be described in detail with reference to the drawings. That is, FIGS. 1 and 2 are front and back side plan views showing the overall configuration of the tape recorder device. Here, in Figure 1,
A pair of reel stands 32 and 33 are rotatably supported on the surface side of the main chassis 310, which is formed in a substantially rectangular shape, at substantially the center thereof. This pair of reel stands 3
2.33 has large diameter gears 34, , ? 5
are formed coaxially and integrally.

Also, at the upper part in the figure on the substantially perpendicular bisector of the straight line connecting the rotation center axes of the reel stands 32 and 33, and on the back side of the main chassis 31, there is a glue motor 3 for running the tape.
6 (see Figure 2). A rotating shaft 36 of the reel motor 36 protrudes toward the front surface of the main chassis 31, and a rotating center portion of a round table 37 is fitted onto its tip. A substantially ring-shaped IC≦friction member 38 is provided on the surface side of the main chassis 3 so as to surround the gear 37. A protrusion 38 is integrally formed. Here, this friction member 38 is in an interlocking relationship with the gear 37 with an appropriate p% friction force, and depending on the rotation direction of this gear 37, arrow (C) (D
) direction.

Further, the protruding portion 381 of the friction member 38 includes a rotary shaft 1
A rotary shaft 182 is provided with a rotary shaft 182. A round table 39, which is always in mesh with the gear 37, is rotatably supported.

Here, the gear 37 is a reel motor, ? When the friction member 38 is rotated 2 in the counterclockwise direction in the figure, the friction member 38 is biased in the direction of the arrow. At this time, the gear 39 supported by the protrusion 181 is meshed with the gear 35 of the reel stand 33,
This reel stand 33 is driven to rotate clockwise in the figure.

Then, when the gear 37 is rotated counterclockwise in the figure by the reel motor 36, the gear 39 supported by the protrusion 181 of the friction member 38 is rotated to the gear 39 of the reel base 32.
This reel stand 32 is rotated counterclockwise in the figure, and the tape (not shown) can be run in the forward and reverse directions. In addition, the reel motor 36 changes its rotational speed and direction in accordance with the operation of a tape constant-speed running operating member (recording, forward and reverse direction playback) and a tape high-speed running operating member (fast forward, rewind), which are not shown. Controlled by a motor drive circuit as described below, as varied
It is something that When the tape constant speed and high speed running operation members and the tape running stop operation member (not shown) (including pause) are operated, a logic control circuit to be described later controls the reel motor 36 according to the operation. It is possible to obtain rotation and stop conditions.

Next, on the main chassis 31, the reel stand s2 is
, 3B, there is disposed a forward/reverse switching device 4Q as an auto-reverse Ot slide that includes a motor drive assist gtM to be described later. This forward and reverse cutting e% N iq 40 has a substantially disk-shaped drive section (described later), such as a main gear cam 4, whose rotational center is rotatably supported by a rotating shaft 411VC embedded in the main chassis 31VC. A toothed portion 412 is formed on the outer periphery.

Here, on the back side of the main chassis 31, a drive source for the hook, such as an assist motor 42, is provided as shown in FIG. A gear 43 is rotatably supported on the rotating shaft of the assist motor 42.
3 (in this case, the reduction gears 44, 45, and 46 are sequentially meshed with each other. Then, from the # wheel 43 to the most)
A small-diameter gear of the tn reduction gear 46 protrudes toward the surface of the main chassis 3 and meshes with the teeth 412 of the main gear gum 41. Therefore, when the gear 43 is rotationally driven by the assist motor 42, the rotation is transmitted to the main gear cam 41 via the reduction gears 44, 45, and 46, and is rotated. Here, the assist motor 42 changes its rotational direction and stop (motor lock) state according to the combined operation of the tape constant speed running operating member or the tape constant speed and high speed running operating member, which will be described later using the logic control circuit. , an assist motor control circuit and an assist motor drive circuit.

Further, on the upper surface of the main gear cam 41, there is a regeneration slider 41 that is slidable in the directions of arrows (E) and (F), the details of which will be described later.
, and a helad slider 48 as a head position control member that is slidable in the direction of arrow (G) ()1) is sequentially disposed. 1. Therefore, when the main gear cam 41 is rotationally driven as described above, 1. Depending on the direction of rotation, the playback slider 47 is selectively slid in the direction of the arrow (or (F)), causing the tape to run in the opposite direction.
The head slider 48 slides in the direction of arrow (G). At that time, the details of the counterfeit money placed on both ends of the head slider 48 will be explained later in the left and right pin preppers 49.
．． Selectively turn the left and right pinch levers 49; and the right capstan 53, 54 through the tape, and the recording/reproducing head 5.5 mounted on the head slider 48 is brought into contact with a predetermined surface of the tape to perform forward or reverse direction. The upper recording/reproducing head 55 performs playback (recording) in the forward and reverse directions of the tape running direction, that is, in forward and reverse motions.
In order to make this possible, the azimuth angle is made accurate, and the head rotation mechanism 56 for this purpose will be described later. Here, the left and right casters 53 and 54 are the rotation axes of the left and right flywheels 57 and 58 shown in Figure 3g2, respectively, and are loose from the back side of the main chassis 31 to the front side. It is inserted through the connector so that it can rotate freely and without sticking.

Here, as shown in FIG. 2, on the back side of the main chassis 31, the left and right cag stans 5J,
A main motor 59 is provided on the right side in the figure corresponding to 54. This main motor 59 has a pulley 60 on its rotating shaft.
is supported. A belt 61 is passed between the pulley 60 and the left and right flywheels 571, 511. Therefore, this left and right flywheel 5
7 and 511, the rotation of the main motor 59 is transmitted through the belt 61, so that the main motor 59 is constantly rotated clockwise or counterclockwise in the figure.

Further, on the front side of the main chassis 31, an eject member 62 is located on the left side in the figure as indicated by the arrow (I) (
It is supported slidably in the J) direction.

The eject member 62 is formed into a substantially rod-like shape and is disposed from the upper end to the lower end of the main chassis 31 in the figure. The eject member 62 is inserted into the main chassis 31 through the through hole 621 formed at one end thereof.
The main chassis 3 is fitted into the sliding portion 31 formed in the main chassis 3 and inserted into the through hole 622 formed in the other end.
After loosely inserting the shaft 312 formed in
It is slidably supported by pressing with 3. Further, in the ejecting member 62, a spring 63 is engaged between a bent locking piece 623 formed approximately in the center thereof and an engaging shaft 314 formed in the main chassis 3. As a result, it is biased in the direction of arrow (J).

Here, a locking portion 624 is formed at one end of the ejecting member 62, and when the cassette lid (not shown), which is normally biased in the open state by the locking portion 624, is closed, A portion of the cassette lid is locked to maintain the closed state. Then, when an eject operator (not shown) is operated, the eject member 62 is slid through the eject slider 64 in the direction of arrow (I) against the biasing force of the spring 63. Then,
The lock portion 624 of the eject member 62 is disengaged from the force cellar M, and the cassette lid is opened.

Further, on the main chassis 31, an erroneous erasure prevention mechanism 68 comprising a cassette detection switch 65 and forward and reverse direction erroneous erasure prevention switches 66 and 67 is provided at the upper side in the figure. .

Next, the forward/reverse switching device 40 including the above motor drive assist mechanism will be described. That is, as shown in FIG. M3, FIG. 4, and FIG. 5, the rotatable main gear cam 41 is supported on the main chassis 31 in mesh with a small diameter gear of the reduction gear 46.

A curved protruding engagement part 412 is formed on the lower surface side of the main gear cam 41 at the upper part of the rotating shaft 411 in the figure, and a pair of return members, such as return levers 69, are arranged to sandwich the protrusion engagement part 412. 70 are arranged. The pair of return shafts d-69 and TO each have one end attached to the rotation shaft 691.7 implanted in the main chassis 31.
01, and a curved part 692 located at the middle part of the part, corresponding to the protruding engaging part 412.
, 702 are formed □. I hate this pair of return levers i9. v.

, locking portions 69 are provided corresponding to the curved portions 692 and 702 of the main gear cam 41, respectively, with the rotation axis as a boundary.
J, 70.9 are formed continuously. The locking portions 693, 703 are arranged to sandwich the protruding locking portion 315 formed on the main chassis 31. Further, the above-mentioned return plates 69 and 70 have engaging portions 694 and 104 formed at their other ends, respectively, and a return spring 71 is fixed between the engaging portions 694 and 704. Here, the operation of the return mechanism configured as described above will be described later.

Also, a rotating shaft 411 on the upper surface side of the main gear cam 41
A protrusion 413 is formed that protrudes downward in the figure, and a protrusion 414 is formed at approximately the center of the protrusion 413 .

Here, on the upper surface of the main gear cam 4, the regeneration slide 114F, which has a substantially inverted T shape, is arranged so as to be slidable in the direction of the arrow (E). This reproduction slider 47 has a curved through hole 471 formed at its central end.
A cutout portion 472 is formed at one end of 71. The protrusion 413 of the main gear cam 41 is inserted into the through hole 47. The tip 415 of the protrusion 413
is opposed to the notch 472 of the through hole 471.

Furthermore, a substantially T-shaped through hole 473 is formed at one end of the regeneration slider 41, and a sliding hole 473 that is installed in the main chassis 3 and projects in a T-shape from the side surface is inserted into the through hole 473. The portion 316 is fitted. Further, this reproduction slider 47 has a through hole 474 formed at the other end, and a shaft 317 installed in the main chassis 3 is inserted into the through hole 474.
After being loosely inserted, it is held down with a screw 318, and an extension part 415 extending to the right in the figure is formed at the center end of the main part. A shaft 319 (see FIG. 1) embedded in the chassis 31 is inserted therethrough. Therefore, the reproduction slider 47 is supported so as to be slidable in the directions of arrows (E) and (F).

Furthermore, the reproducing slider 47 has a recess 477 formed in the substantially central portion of its lower side, and a notched fitting portion 478 is formed in the recess 477. A part of the head rotation mechanism 56, which will be described in detail later, is engaged with this fitting portion 478.

Further, the reproducing slider 47 has bent portions 72 and 73 formed at one end and the other end thereof, respectively. , 731 are formed. The locking portions 721 and 731 have bent portions 491 and 501 of the left and right pin telegraphs 49 and 50, which will be described in detail later, at the arrows ( ) of the playback slider 47.
g)) (It is selectively locked in response to sliding in the F5 direction.

Next, on the upper surface of the reproducing slider 47, the RAD slider 48, which has a substantially inverted T shape, is arranged so as to be slidable in the directions of arrows (G) and (H). This head slider 48 has a recess 48 formed at the tip of its central end, and a shaft 482 inserted between the shafts e9t and vyx of the main chassis 31 is inserted into this recess 481. This means that the head slider is guided to slide in the direction indicated by the arrow (1 (81) in the figure.
The bottom of the recess 48 contacts the shaft 482.

Further, a through hole 483 is formed at the central end of the slider 48 to correspond to the rotating shaft 411 of the main gear cam 41, and a rotation hole 484 is formed at the lower end of the through hole 483 in the figure. is formed in a horizontally elongated shape corresponding to the rotation orbit of the protrusion 414 of the main gear cam 41. The rotation shaft 411 of the main gear cam 41 is inserted into the through hole 483, and the protrusion 414 of the main gear cam 41 is inserted into the rotation hole 484.

Therefore, in the herad slider 48, as the main gear cam 4 rotates, the tip 415 of the protrusion 413 of the main gear cam 4 slides the regeneration slider 47 to a predetermined position, and the subsequent main gear cam 41 As the protrusion 414 rotates, the protrusion 414 engages with a portion of the rotation hole 484 and slides into a predetermined position.

Further, the slider 48 is provided with bent locking portions 4g5 and 486 formed substantially perpendicular to the corner portions at both ends thereof.

The left and right pinch rollers 51, 52 are respectively disposed in the bending locking portions 48.5, 486. These left and right pinch rollers 51 and 52 are respectively connected to left and right pinch levers 49 and 5 whose sides are formed in a substantially U-shape.
Rotating shafts 492 and 502 are rotatably supported at one end of the
are supported so as to be freely rotatable n. Further, at the other end portions of the left and right pinch levers 49, 50, there are projecting portions 4 corresponding to the bending engagement portions 2° 23 of the reproduction slider 47.
93,503 is formed in this protrusion 493.
503 has bent portions 491 and 503 formed therein.

Furthermore, the above left and right pinch Leno? -49, 50 rotation shafts 492, 502 have n torsion springs 7, respectively.
4.75 is wound around and attached, and one end of this torsion sedge ring 74.75 is engaged with the rear side of the left and right pinch levers 49.50, respectively. The other ends of the torsion springs 74 and 7.5 are engaged with bent locking portions 485 and 486 of the Rad slider 48, respectively. So, this left and right bin telej? −
49 and 50 are rotated counterclockwise and clockwise in the figure, respectively, when the Rad slider 48 is slid in the direction of arrow (G). At this time, this left and right bin tele/? -ip, so are the protruding parts 493, 503
One of the bent portions 491 and 501 of the playback slider 47
selectively as it slides in the arrow (11) CF) direction.
The bending retaining portions 485 and 486 are locked and their rotation is prevented, and the other left and right pinch levers 49
．． 50 is a rotating left and right pinch roller; 51; 5;
2 is the above left and right Cag Stan 5,? , 54.

Here, a locking portion 487 is formed at one end of the helad chassis 48 to correspond to the shaft 317 of the main chassis 31, and a locking portion 488 is formed at the other end of the sliding portion of the main chassis 31. It is formed corresponding to 316. Therefore, the head slider 48 is slid in the direction of the arrow (U) until its retaining portions 4117 and 4811 come into contact with the shaft 317 and the sliding portion 316 of the main chassis 31. The head slider 48 is
Since the spring 76 is engaged between the locking piece 489 formed at the other end and the sliding portion 316 of the main chassis 31, the spring 76 is biased in the direction of the arrow (b). ing.

Further, the head mounting structure 77 of the head rotation mechanism 56 is attached to the head f slider 48 at approximately the center thereof with screws 77.
It is attached by 1.

This head mounting structure 77 includes a head base plate 78 and a gear 7.
9 is integrally supported, and a substantially fan-shaped fan gear 80 that meshes with this gear 79 is rotatably supported at its base. Further, a substantially cylindrical head support 8 is attached to the head base plate 78, and an upper recording/reproducing head 55 and an erasing head 82 for a cassette tape recorder are arranged side by side on this head support 8. It is fitted 7'.

Here, with the head mounting structure 77 attached to the slider 48, the tape contact surfaces of the upper recording/reproducing head 55 and the erasing head 82 are opposed to the reel stands 32, 33.

Further, the fan-shaped gear 80VC has a driven portion 801 extending from its base, and the bent end of the driven portion 801 is
It is interposed within a fitting portion 478 of the reproduction slider 47. Note that the head slider 48 is indicated by arrows (0) and (8).
Even if the covered portion IvJ portion 80 is slid in the direction n, the covered portion IvJ portion 80 does not separate from the fitting portion 478 and always remains in the fitting portion 47.
It is something that is interposed within 8. Therefore, when switching the tape from the forward direction to the reverse direction and from the reverse direction to the forward direction, the playback slider 47 slides in the directions of the arrows (F, l, and (n)).
Accordingly, the fan-shaped gear 8θ rotates around its base portion.

For example, when the fan-shaped gear 8θ is rotated counterclockwise in one turn, the gear 79 that meshes with the fan-shaped tooth fF, 110 is rotated clockwise in the figure.

Accordingly, as the gear 79 rotates, the head base plate 78 and the head support 81 are rotated in the same direction, and the recording/reproducing head 55 and the erasing head 82 are rotated by exactly 180 degrees. Here, there is no need to change the track speed (head movement) when switching between forward and reverse tape running. Further, when the fan-shaped gear 80 is rotated clockwise in the figure, the gear 79, the head base plate 78, and the head support 81 are rotated counterclockwise in the figure, and the recording/reproducing head 55 and the erasing head 82 are rotated counterclockwise in the figure. is returned to its original position, and a pair of locking portions (not shown) are formed in a portion of the head base plate 78.
The head mounting groove body 27 corresponds to the pair of locking portions.
A pair of screws 772, 7'13 are screwed into the.

Therefore, when the head base plate 78 is rotated, one of the pair of locking portions is connected to the pair of screws 7 of the head mounting structure 77.
72 and 773. Therefore, by adjusting the depth of engagement of the screws 772 and 773, the azimuth of the recording/reproducing head 55 and the erasing head 82 can be adjusted. In addition, this recording/reproducing head 55
The erasing head 82 is connected to an electrical circuit of a recording/reproducing system (not shown) via a connection line (not shown).

Furthermore, a pair of arrows are displayed on the circumferential side of the head support 8 to indicate the tape running direction, and a tape supporting both ends of the tape in the width direction is displayed on the negative side thereof. A guide portion 83- is formed.

Further, a torsion spring 84 is wound around and engaged with a part of the head mounting structure 77 tL.

One end of this torsion sgel ring 84 is connected to the round table 79.
The other end is fixed at the center of rotation of the upper F + arcuate gear 0? t': It is locked at the + part. Therefore, the head support body 78 is moved to the second position in the forward and reverse running states by the force of the torsion spring 84. '('C is something that is held stably.

Next, we will explain in detail the operation of the auto-reverse (forward/reverse switching device 40 and the back of the unfolding machine) which includes the motor drive assist machine configured as described above. Assume that the main gear cam 4 is rotationally driven in the counterclockwise direction in the figure by operating the tape constant speed running operating member (forward direction) as described in 1111 in the operation stopped state as shown in the figure. As shown in FIG. 6, as the main gear cam 4 rotates, its protrusion 413
The distal end portion 415 of the reproducing slider 47 is engaged with the unique side portion of the notch 472 of the reproducing slider 47, and the liquid also slides the reproducing slider 47 in the direction of the arrow (Fi).

Here, as the reproduction slider 47 moves, the recording/reproducing head 55 and the erasing head 82 are rotated by the head rotation mechanism 56 described above in accordance with the tape running direction. At this time, the protrusion 41 of the main gear 44
The protrusion 414 of No. 3 corresponds to the rotation hole 484 of the head slider 48.
It is engaged with the right side in the figure. Therefore, with the subsequent rotation of the main gear cam 4, the regeneration slider 47. is not biased in the direction of arrow CB because the tip 415 of the protrusion 413 comes into sliding contact with the curved portion 471; It is pushed in the direction of arrow (G) and slid to a predetermined position n1. At this time, the torsion spring 14.75 is attached to the bending locking portion 4B5, 486 of the head slider 48.
Left and right pinch levers engaged through 49.50
are biased clockwise and counterclockwise in the figure, respectively. Therefore, among the left and right pinch levers 49 and 50, the left pinch lever 49 is used to lock one end of the regeneration slider 47, since the regeneration slider 47 is at the most position of the arrow (1). It is locked to the portion 72 and its rotation is prevented.

On the other hand, upper rC right pinch lever 50 pieces, regeneration slider 47
It rotates clockwise in the figure without being locked by the locking part 73 at the other end! t, as mentioned above, the right pinch roller,
52 is brought into contact with the right cag stan 54Vr. here,
The assist motor 42, which rotationally drives the main gear cam 41, is supplied with a very small amount of current so that the motor is locked and the tape is played back in the forward direction.

Here, the return mechanism slid onto the lower surface side of the main gear cam 41 is rotated counterclockwise in the drawing of the main gear cam 41, as shown in FIG. One end of the return lever 69 contacts the curved portion 692 of the return lever 69 on the left side in the figure.As the return lever 69 rotates, the return lever 69 moves against the spring force of the return spring 7)
It is rotated about 91 in the direction IF in the figure. At this time, the return lever 76 on the right side in the figure is locked by the protruding locking portion 315 of the main chassis 31 and cannot be rotated clockwise in the figure. Then, as shown in FIG. 9, when the recording/reproducing head 55 and the erasing spatula 182 finish rotating, that is, when the head slider 48 starts sliding, the protruding engagement portion 412 of the main ear cam 41 is rotated. The return lever 69 is moved along the curved portion 692 of the return lever 69, and the return lever 69 is further rotated clockwise in the figure. Therefore, as shown in FIG. 1O, the rotation of this main gear cam 41 causes
When one end portion of the return lever 69 is located at one end of the curved portion 692, the rotation of the return lever 69 is stopped. As shown in Figure 11, when the sliding of the RAD slider 48 is completed, the main gear cam 41
The approximately central portion of the protruding engaging portion 412 is connected to the return lever 6.
It is in contact with one end of the curved portion 692 of No. 9. At this time, the return bar 69 is biased in the direction of the arrow (IO force) by the return bar 51 that is partially engaged with the return bar 69.

In addition, when the playback condition in the positive direction is 2i, the end of the tape is reached and the agitation operation i for stopping at θ is performed (same also when operating material B), and a chive end detection device (not shown) determines this n. Assume that the current supply to the assist motor 42 is cut off.

Then, as shown in Figure 2, the head slider 48
is retreated in the direction of the arrow (Iυ) due to the urging force of the return spring 71.

Here, as the head slider 48 retreats, the main gear cam 41 is rotated clockwise in the figure by the urging force of the return spring 7), and slides the head slider 48 as shown in FIG. Retract to starting position. At this time, the bending locking portions 4115, 41 of the head slider 48?
6, the left and right pinch levers 49 respectively engaged
．． 50 is rotated 2' clockwise and counterclockwise in the figure, and the left and right pinch rollers 51 and 52 are removed from the left and right cag stans 53 and 54 by 1 inch.

Here, the main ear cam 4 positioned as described above is thereafter returned to the stop position by the spring force of the return spring 7 of the return mechanism. That is, as shown in FIG. 14, the protruding engaging portion 412 of the main gear cam 41 slides along the flI# portion 629 of the return hook 69 on the left side of the figure by the force of the return spring 71. By moving the main gear cam 4 while moving, the main gear cam 4 rotates clockwise in the figure and comes to a stopped state as shown in FIG. 15. At this time, the regeneration slider 47, which is biased in the direction of the arrow (trout) from the tip 415Vc of the main gear cam 41, is moved as the main gear cam 41 rotates clockwise in the figure. It is slid in the direction of arrow B and returned to the stopped position.

When the state is returned to the stopped state as described above, a reversal signal is sent to the assist motor 42 if the auto-restart state is set, and the assist motor 42
is driven in reverse. Then, the main gear cam 41 is reversed and rotated clockwise in the figure.

is generated by φb to create a reproducing state in the opposite direction.

That is, as shown in FIG. 16 and 171M+, as the main gear cam 41 rotates clockwise in the drawing, the tip 415 of the protruding portion 413 moves to the left side of the notch 484 of the regenerating slider 47. This slider slider 47 is engaged with nl and slides in the direction of arrow (F). Here, as the reproduction slider 47Q slides, the verdigris head 55 is rotated in accordance with the direction of travel of the chive by the head rotator 56 described above. At this time, the protrusion 414 of the protrusion 413 of the upper IC main gear cam 4 is engaged with the left side of the rotary IJ hole 48 of the helad slider 48 in the figure. Therefore, with the subsequent rotation of the main ear cam 4, as shown in FIG.
Although the head slide die 8 is not biased in the direction of the arrow (F) due to the sliding contact of the tip 415 of the protrusion 413, the head slide die 8 is not biased in the direction of the arrow (F) by the protrusion 414 of the protrusion 413. n, it is slid to a predetermined position. At this time, the bending locking portion 485.41 of this head slider 48
Left and right pinch levers 49.50 engaged via 16VC torsion springs 74.15 are
It is biased counterclockwise in the figure. Therefore, the left and right pinch levers 49, . Out of 50, right pinch lever 50
Since the reproduction slider 47 is located in the direction of the arrow (F), it is locked by the locking portion 73 at the other end of the reproduction slider 47, and its rotation is prevented. On the other hand, the left pinch lever 49 is rotated counterclockwise in the figure without being locked by the locking portion 72 at one end of the playback slider 42, and the left pinch roller 5 is rotated to the left as described above. It is brought into contact with the cag stan 53. Here, as described above, the assist motor 42 is brought into a motor lock state because the current supplied to it is very small, and regeneration is performed in the reverse direction of the chive.

Here, with the rotation of the main gear cam 41 in the clockwise direction in the figure, the other end of the protruding engaging portion 412 is the curved portion 7 of the return lever 70 on the right side in the figure.
02, and the return lever 70 is rotated counterclockwise in the figure about the rotation shaft 701 against the spring force of the return spring 71. At this time, the return lever 69 on the left side of the figure is locked to the protruding locking part 315 of the main chassis 31, and
In the figure, it is only rotated 2L in the counterclockwise direction. With the subsequent rotation of the main gear cam 41, the return lever 20 on the right side in the figure is further rotated 2L in the counterclockwise direction in the figure by the protruding engagement portion 412.

Then, in the regenerating state in the opposite direction in which the head slider 48 has completed sliding, the main gear gum 41Q] protruding engagement portion 41
2, the approximate center thereof is curved 702 of the lever 10.
It is in a state where it is engaged with one end of the.

Next, a circuit for controlling the tag recorder will be explained. That is, as shown in FIGS. 19 and 20, the logic control circuit 85 has its power supply connection terminal connected to the power supply (10B).
and its ground end (GND) is grounded. The logic control circuit 85 has a forward playback input terminal (F-PLAY) and a reverse playback input terminal (P-PLA).
Y), recording input end (REC), fast forward input end (F, F,
), rewind input terminal (RBW), stop input terminal (STO
P) and? -'s input terminal (PAUSE) is correspondingly connected to each of the other ends of switches 86 to 92, each of which has one end connected to ground. Therefore, when the switches 86 to 92 are operated, the logic control circuit 85
Input terminals F, PLAY, R, PLA corresponding to 6 to 92
Y, REC, RBW, F, F,.

5TOP and PAUSE are at ground potential or low level (
(hereinafter referred to as L level). Then, the square playback output terminal (F*
out), reverse playback output end (R-out), recording output end (REC-out), rewinding output end (REW-out)
t), the fast forward output terminal (F-F-out) and the pause output terminal (PAU8E.out) are set to Heileher (hereinafter referred to as I level) to fZk), and based on this signal, the assist motor 42, reel motor 36 and main The motor 59 is controlled to prevent the vehicle from moving rapidly or stopping.

Here, the assist motor 42 includes transistors Ql # Qp p Q, s, connected in a bridge shape.
It is connected between the midpoints of number 9. This transistor Ql
p Qt s Qs p Of Q4, the transistors Ql and Q2 on the lower side of the figure are removed.

The pace is diode D1, D, and resistor R1JR
1, the square same reproduction output terminal (F-out) and the reverse reproduction output terminal (R-out) of the logic control circuit 85 are connected through
t) is connected to n. Damn it, the above transistor. I
#Q2 Each transistor on the upper side in the figure among gQ3yQ4. 3. Q4 is based on that 1. Resistance Re
# Transistor 3' Q is connected to the collectors of each other via R4, and its emitter is configured to control the current of the assist motor 42.
It is connected to the power supply 1B via ik.

The base of this transistor Q is '4 source + B [resistance R
Connected through the 217t zener diode D3 through the transistor. This transistor is connected to the collector of 6. The base of 0 is connected to the signal output terminal (T-out) of the logic production circuit 85 through a diode D4 and a resistor R6.

Also, the fast forward output terminal (FJ
'-out), the rewind output terminal (R-out) is connected to the 1t-ff2'L NAND circuit N□ and N! One input terminal of the NAND circuits NNt and N is connected to Jχ, and the other input terminals of the NAND circuits NNt and N are commonly connected to the output terminals of a NAND circuit Na connected to a selection switch 93, which will be described later. Also,
The above NAND circuit N1.

N! The respective output terminals apply a normal rotation or reverse rotation signal to the assist motor 42. Ernando circuit N4
10n are commonly connected to the input terminals of #N@, and 10n are connected in correspondence to the input terminal of the NAND circuit N6. Here, the output terminals of the NAND circuits 2BN, N, are connected to the connecting terminals 94, 9° of the upper f12 assist motor drive circuit, and the assist motor terminals 2 are connected to the connecting terminals 94 and 9° of the upper f12 assist motor drive circuit. It is said to be rotated forward or backward. Further, the output terminal of the NAND circuit N6 is connected to one input terminal of the NAND circuit N, and the other input terminal of the NAND circuit N is connected to the head position detection switch 96 via a resistor R. In addition, its output terminal is connected to one input terminal of the Punto circuit N8.

Furthermore, the NAND circuit NIo is connected via the NAND circuit N@Fi capacitor fCt which is commonly connected to each input terminal or the output terminal of the NAND circuit N, and the resistor R8 whose one end is connected to the power supply (10B). Connected to one input end. The other input terminal of this NAND circuit N10 is the NAND circuit N6.
is cross-connected to the other input terminal of the NAND circuit 1'i!, and its output terminal extracts the current control signal through the capacitor fct. Connected to F N t t
are doing. The output end of this boom r time #rNst is connected to the connection end 97 of the assist motor drive time δ.

Next, the reel motor 36 is connected to the assist motor 4.
Almost similarly to 2, nine transistors connected in a bridge shape are connected between the midpoints of Qi pQo and Qro. This transistor. γ.

Of Qs e Qe t Qro, the transistors Qy and Qa on the lower side of the figure have their bases connected to the positive direction of the logic circuit 85 through diodes D, , D and resistors R, , R, and o, respectively. Playback output end (F-out)
, connected to the reverse playback output terminal (R-out). Also, the above transistor. 7p Qa p Qo
#Qs. Each transformer Qoz on the upper side of the figure
Q+o has its base each resistor R11p]? +
t, and their emitters are connected to the power supply +B via transistors Q1□, each configured to control the current of the reel motor 36. The base of this transistor Q□ is
A zener diode 1) is connected to the power supply 1B via a resistor RI3, and a transferer is connected via f7. +
This transistor is connected to the collector of 2. ,
! The base of is commonly connected to diode D and resistor R1□4
, diode D, and resistance R+s '5t! through the square regenerative output terminal (F-out) and reverse regenerative output terminal (R.out) of the logic side 11 circuit 85, respectively.
It is followed by 1.

Further, the main motor 59 has one end grounded,
The other end is a transistor. l5Q) Connected to the collector. This transistor. 13, its emitter is connected to 4-B, and its base is resistor R+a'f.
It is connected to the collector of the upper ν (transistor QxtO) through the transistor QxtO.

That is, when a power switch (not shown) is operated to perform reproduction in the forward direction, the signal output terminal (T-out) of the logic-controlled fii1 circuit 85 is set to H level. Therefore,
Now, if the main f-86 is operated at time T as shown in FIGS. 21(a) to (i), the signal output terminal (T.out) of the logic control circuit 85 becomes L level, When the transistor Qo is turned off, the square reproduction output terminal (F=out) becomes H level, and the transistor Qo is turned on. Then, the assist motor 42 is supplied with enough current to be driven in a predetermined direction for a predetermined time (until time Tt) and is driven to rotate in the normal direction. Therefore, as described above, the main gear cam 41 is rotationally driven to operate the forward/reverse switching device and function to run the tape in the forward direction.

At this time, in conjunction with this switching operation, the aforementioned head rotation mechanism 56 is operated, and the recording/reproducing head 55 is brought into contact with the tape surface in accordance with the tape running direction, and the right pinch lever 50 is moved. The right pinch roller 52 is rotated and comes into contact with the right capstan 54 via the tape. At this time, the signal output terminal (T.out) of the logic control circuit 85 becomes H.
level, and transistor Q6 is turned on. Therefore, a small predetermined current is supplied to the assist motor 42, and the motor is locked, and the tape is reproduced in the same manner in all directions.

On the other hand, at time T2 when the reel motor 36&J2, J::'n+2 assist motor 42 is motor-locked, the transistors Qy and QI2 are turned on and 4i-j-(
p force t'.

Therefore, this reel motor J 6 (I; t: Rotating bait P corresponding to square speed running of the tape (and 1 rotation between the rotation directions tt1), the gear 39 meshes with the gear 35 of the reel stand 33. The tape is then run at a constant speed in the square direction.

Here, at time T1 when the switch 86 for square regeneration is operated, the transistor Q+s is turned on and the main motor 59 is turned on. As described above, the rotation of the main motor 59 is transmitted to the left and right capstans 5J and 54 via the left and right flywheels 57 and 58, respectively.

Next, when the power switch is not operated, time T is reached in order to perform reproduction in the reverse direction.

Assume that the switch 87 is operated (the automatic release is performed by a tape end detection device (not shown)). Then, in the same way as described above, the signal output terminal (T.out) of the logic control circuit 98.5 is turned off by the Llz bell, and the transistor Q6 is turned off, and the reverse reproduction output terminal (R-
The signal becomes H level, and the transistor Q! is on
Ru. Then, the assist motor 42 is supplied with a current sufficient to drive the motor in a predetermined direction for a predetermined time (at time T!) and is driven in reverse. Therefore, as mentioned above, the main gear cam 41 rotates 41) 47 to operate the front 6C forward/reverse switching device to run the tape in the opposite direction. At this time, in conjunction with this switching operation, the aforementioned head rotation 81 mechanism 56 is operated, so that the recording/reproducing head 55 comes into contact with the tape surface in accordance with the tape running direction, and the left pinch lever 49 is activated. Upon rotation, the left pinch roller 51 comes into contact with the left capstan 53 via the tape. At this time, the signal output terminal (T.out) of the logic control expansion circuit 85 becomes 1 level, similar to the square same reproduction state described above.
The transistor Q6 is turned on. Therefore, the assist motor 42 is supplied with a minute predetermined 1.
1-: The motor is locked and the tape is played back in the reverse direction.

On the other hand, in the reel motor 36, when the assist motor 42 is motor-locked 2''L: transistors Q, 12, and Q are turned on at a+jT 2 (drive 1 uniformly).

Therefore, this reel motor 36 has a rotating speed of 1. ! The gear 39 is connected to the gear 3 of the reel stand 32 as described above.
4 and 1+Q, the tape θ) runs at a constant speed in the reverse direction.

Here, the main motors 59 and 59 are driven by turning on the transistor QIs at time T when the switch 87 is operated, as in the above-mentioned regeneration in the city direction.

Furthermore, when the switch 89 is operated to run the fast-forward tape, the fast-forward output terminal (F
-F-Out) A fast-forward circuit (not shown) drives the reel motor 36 at a rotational speed and direction corresponding to the tape fast-forwarding state, thereby ensuring stable tape fast-forwarding.

Here, in order to run the rewind tape, switch 90 is pressed.
When the rewind circuit 85 is operated, a rewind circuit (not shown) connected to the rewind output terminal (REW-out) of the logic control circuit 85 causes the reel motor 36f to operate at a rotation speed and rotation direction corresponding to the tape rewind state. When the tape is driven by the winder, stable tape rewinding is achieved.

Also, in order to perform fast-forward playback (cue), switch 8
6 and 89 are operated as an afterthought. Then, the selection switch 93 is turned on, and the output terminal of the NAND circuit Na becomes H level, and the fast forward output terminal (FFout) of the logic control circuit M&85 becomes H level. The output terminal of the NAND circuit N4 becomes H level, turning on the transistor Q1 of the assist motor drive circuit, and turning off the transistor Q as described above, driving the assist circuit 42 in a predetermined direction. A sufficient current is supplied to drive the motor in the forward direction. Then, the main gear cam 41 rotates 1ll13 times, and the forward/reverse switching device:? operate,
The recording/reproducing head 55 is rotated in accordance with the tape running direction while moving westward so as to run the tape in the forward direction.

Thereafter, as described above, the head slider 48 slides and the recording/reproducing head 55 touches the tape surface by 'i'+4 (the right pinch roller 52 contacts the right cag stun 54). The position detection switch 96 is turned off.Then, the sensor circuit N6 is turned off.

Due to Nl e N5 #N* #N1°, the output terminal of the NAND circuit Nll becomes H level, and the transistor Q6 of the assist motor drive circuit is turned on. Therefore, the assist motor 42 is supplied with a small amount of current n1.
With the motor locked, fast-forward playback (cue) is performed.

Here, it is assumed that the switches 81 and 9Q are operated at a later date to perform rewind playback (review). Then, the selection switch 93 is turned on and the output terminal of the Ninand circuit N becomes L level', and the logic control circuit 85
The rewinding output terminal of becomes H level. Therefore, the output terminal of the NAND circuit N becomes H level, transistor Q2 of the assist motor drive circuit is turned on, and transistor Q6 is turned off as described above to drive the assist motor 42.
is supplied with enough current to be driven in a predetermined direction, and becomes inverted 1
Moved by.

Therefore, the main ear cam 4 is driven to rotate, operating the forward/reverse switching device, and running the tape in the forward direction. At the same time, the recording/reproducing head '55 is rotated corresponding to the tape running direction. Thereafter, the head slider 48 slides in the same way as in fast-forward playback, the recording/reproducing head 55 lightly touches the tape surface, and the head position detection switch 96 is turned off before the left pinch roller 51 comes into contact with the left cag stun 53. Ru. Then, the NAND circuit N,,Nd.

Due to N, , N, , N, the output terminal of the NAND circuit Nll becomes H level, and the transistor Q6 of the assist motor drive circuit is turned on. Therefore, the assist motor 4
2 is supplied with a minute current and has a motor lock-like horn, -
Now, this is where rewind playback (review) comes into play.

Next, an embodiment of the present invention, which is a further development of the basic example described above, will be described.

That is, the head position detection switch 96 described above detects the head position at the time of cue and review, and correctly cues at a predetermined tape position.

This is provided to help you review (cue) 'a' work.

First, a specific example of head position detection will be described. As shown in FIG. By engaging and disengaging the switch actuating member 2 during sliding in the (a) and ←) directions, the head position detection switch 96 can be turned on and off at a predetermined position taken by the head slider 48. It is.

In this case, the switch actuating member 2 is implanted in the main chassis 3 into a ball-shaped long hole 21a having three locking points (a) I (b) t (C) at its intermediate portion. By elastically engaging the guide member 2J, it is possible to freely rotate in the direction of the notch Jki, using the cough support stand as a fulcrum. A biasing force is applied in the direction of the arrow by the attached sedge ring 24.

Further, the switch actuating member 21 has an engaging portion 21b protruding from the base end thereof located on the movement path of the engaging portion 48a of the head slider 48, and a rectangular long hole 21c formed at the distal end portion. An operating shaft 96m of the head position detection switch 96 is inserted through the latch.

In the above configuration, the elastic locking portion between the long hole 211 of the switch actuating member 21 and the guide member 23 is connected to three locking points (Jl). (b) # The appropriate movement in (c) is to move the 3f4i+! after the head is upright and when adjusting the moisture for detecting the actual head position! Other locking points (a) or (c) to obtain the correct operating position.
All you have to do is move it between the two.

No. 231ffi (a), (b) is the central locking point (b
) shows the state before and during switch operation. Look down on Figures 24 (a) and (b) and Figure 25 (a) and (b)! L shows the state when the switch is operated and when the other locking point is set to (a) or (C).

That is, when the switch is operated, the upward movement of the head slider 48 causes the switch operating member 21 to be moved by the spring 24.
By rotating the head position detection switch 96 in the direction of the arrow ➝ against the biasing force, the operating shaft of the head position detection switch 96 is pushed down and its contact is switched from on to off.

Also, before the switch is operated, the Herad slider 48 moves downward! OK, the switch operating member 21 is rotated in the direction of the arrow by the biasing force of the spring 24, thereby pulling up the ladder shaft of the head position detection switch 96 and switching its contact from OFF to ON.
It is.

That is, by simply changing the locking point of the switch actuating member 2 as described above, the operating position of the head position detection switch 96 can be easily and reliably extended to the head position.
It can be set and adjusted to the correct position.

Note that the head position detection switch 96 is actually the second
As shown in FIG. 3(,), the first contact 96 changes from off to on when the switch is operated, and the second contact 96 changes from on to off when the switch operates.
B, the sl and the second contact point 961.96
The operation timing of B is such that the second contact 96B turns from on to off a little earlier than the timing from off to on of the first contact 96, and the timing of the first contact 96 turns from on to off. It is assumed that the switch returns to on from off a little later than the above.

However, in this case, during the timing delay between the 4-chi circuit system and the Seibyou system necessary for the cue and review (heading) operations; There is a problem in making the transition to operation. In other words, in practice, the head position 1.1 during cue and review (heading) operations is slightly regressed from the head position 16 during normal cueing, but the operation of the head position detection switch 96 This is because it is difficult to appropriately control the amount of regression of the head position if the head position is immediately shifted to the cue and review (shaving) operations.

Therefore, in this invention, even if the amount of regression of the head position is simplified during cue and review (heading) operations, the position will definitely be 3 [correct]! ! II <The feature is that it can be controlled.

That is, FIG. 26 shows the assist motor j moving rotation r & tfISyI in FIG. Contact 96
B is inserted and the collector-emitter of a transistor Q2G is connected correspondingly to both ends of this second contact 96B, and this transistor 9Qt. Resistor R, at the base of. Transistor Q! Connect the collector of I, and connect the collector of this transistor Q! The difference from Fig. 19 is that the true emitter is grounded and the base is connected to a control terminal (CT), which will be described later, via a resistor R□, but otherwise the configuration is essentially the same as in Fig. 19. .

In the above configuration, a case will be described in which the stop state is first changed to a forward playback state, and then the playback state is returned to the stop state.

That is, in this case, if the switch 86 is operated at time T1s shown in FIG. 27, a predetermined current in the positive direction will be supplied to the assist motor 42 as shown in FIG. As described above, the head slider 48 is moved to the playback (PI, AY) position at time TI, as shown by Ic in FIG.

Then, at this point, the above-mentioned spacing command value detection switch 9 is activated.
Contact point 96 El of M2 of No. 6 changes from off to on state as shown in the same figure (b), but the contact point 96 of the same figure (1Q) is closed as shown in the same figure (C), and Riri also turns on a little earlier. It turns off and goes 1 time.

In this case, the assist motor 42 is brought into a locked state, that is, into a regeneration state, by the operation of the first contact 96kO) of the head position detection switch 96.

After that, operate switch-91 at time Tts.
For example, the current supplied to the assist motor 42 is immediately cut off and the head slider 48 returns to the stopped position. Also, due to this fL, the second contact 96B of the head position detection mate: y'-96 changes from on to off at the timing shown in the figure. East, and a little later than this, the first contact 96 also returns from the off state to the on state.

In addition, FIG. 27(d) shows whether the playback state is currently in one direction or the other by means of the switch associated with the operation of the head rotation controller 56.

Further, when changing from a stopped state to a reproducing state in the reverse direction and then returning to a stopped state, the operation is similar to that shown in FIG. 27 as shown in FIG. 28.

Next, a case where a cue and review (cue) operation is performed will be explained using a cue as an example.

That is, in this case, it is assumed that the assist motor 42 has been previously locked in the forward regeneration state as shown in FIG.
Suppose that 9 is operated.

However, in this case, turning off the transistor Q@Z' in FIG. 26 is the same as in the case of FIG. By inverting the control terminal signal from the terminal (corresponding to 85 in the figure) from the H level to the L level, the resistor RW becomes equivalent to an open state, and the transistor Q5 is also turned off. As a result, the assist motor 42 is temporarily stopped at this point.

Then 1. Head slider 48 is 291kl (e) from 2 companies.
As shown in the figure (C), the contact 96B of the A2 of the 2L switch 96 is turned from the off state to the on state as shown in the figure (C). Therefore, the transistor Qs is turned on again.

As a result of this fL, a predetermined current of 7L in the j+ positive direction is supplied to the assist motor 42, so that the head slider 48 is again moved to the 11th position.

Then, the head position i output switch 960) jl (2
Since the contact 9'6B changes from the on state to the off state, the transistor Q is turned off again, and the assist motor 42 is stopped again. As a result, the head slider 48 returns to the stopped position once again. I can't help but go back.

As a result, a2oj of the head position detection switch 96
Since the contact 96B changes from off to on again, transistor QI+ turns on and the assist motor 42 switches to psr.
In this state, the slider 48 is moved again toward the playback position.

Then, the second contact 96 of the head position detection switch 96
Since the transistor B changes from on to off again, the transistor Q11 turns off, the assist motor 42 comes to a halt, and the head slider 48 returns to the stop position again.

Then, the head slider 48 is moved back and forth several times (
As shown in the figure, the head slider 48 converges to the appropriate position for the cue state while repeating the process (82 and a half times).
When the control 48.9 for the control terminal (c'r) is returned from the L level to the H level, the transistor Qi returns to the on state, and the transistor Q6 switches to the α-thick control circuit 85 as described above. The assist motor 42 is turned on by the H level signal from the signal output terminal (T-out) of the motor, and the assist motor 42 is set to the lock state F'4, so that the head slider 48 is controlled to the position (see FIG. 29e). It is something that

That is, as described above, the head slider 48 is moved back and forth a predetermined number of times during cue and review operations. ! I! By performing the + operation, the regression -11 of the head position can be easily controlled and reliably brought to the proper position.

It should be noted that this invention is limited to only one embodiment described above and illustrated.
It goes without saying that various shapes and modifications may be made without departing from the gist of the invention.

〔Effect of the invention〕

Therefore, as detailed above, according to the present invention, the head position control member, which is controlled by the motor drive assist mechanism, is moved forward and backward a predetermined number of times during cue and review. By this, the regression of the head position can be easily and reliably controlled to the appropriate position, thereby providing accurate and smooth cueing.

It becomes possible to provide an extremely good tape recorder device that has been improved so that review (cue cue) operations can be performed.

[Brief explanation of the drawing]

1 to 21 are configuration explanatory diagrams and operation explanatory diagrams showing a basic example of a tape recorder device according to the present invention, connection diagrams and timing charts of electric circuits used therein, and FIGS. 22 to 25. The figures are a configuration explanatory diagram and an operation explanatory diagram showing a specific example of the head position detection switch section in the basic example of FIGS. 1 to 21, and FIGS. 26 to 29 are main parts showing an embodiment of the present invention It is a configuration explanatory diagram and its timing chart. 3... Main chassis, 32... Reel stand, 33
...Reel stand, 34...Gear, 35...Gear, 3
6- Reel motor, 37 Gear, 38 Brass member, 39 Gear, 40 Forward/reverse switching device,
4--Main gear cam, 42--Assist motor, 43--Gear, 44--Reduction gear, 45--Reduction gear, 46--Reduction gear, 47--Regeneration slider, 48 ...Head slide 1149...Left pinch lever, 50.9. Right tip, 51 River left pinch roller, 52... Right pinch roller 1, 53... Left capstan, 54... Right capstan, 55... Recording head, 56... Head rotation ke'A'l! J, 57...
・Left flywheel, 58...Right flywheel, 5
9°°・Main motor, 60...Pulley, 61...
Belt, 62... Eject member, 63... Spring,
64... Eject slider, 65゛... Cassette detection switch, 66... Accidental erasure prevention switch, 67...
... Erroneous erasure prevention switch, 68...6 Kure erasure prevention machine (
・+1.69... Return lever, 70... Return lever, 7)... Return spring, 74-... Torsion spring, 75... Torsion spring, 76... Spring, 77... Head Storage A1 (Body. 78...Head base plate, 79...Gear, 8θ...M
gear, 81°...head support, 82... erasing head, 83... chive guide portion, 84... torsion spring, 85... logic system 7a1+ circuit, 86
...switch, 87...switch, 88...switch, 89...switch, 90...switch, 91
°°・Switch, 92・Switch, 93・O-selection switch, 94・Connection end, 95・Connection end, 96
...Position detection switch, 97...Connection end, 96k.
...First contact, 96B...Second contact, (h., Q
l,...Transis 9, Rv. , R1...resistance, C
T...Control terminal, 48a...Fake gold part, 2)
...Switch operating member, 21a...Long hole, 23...
-Guide member, 24...spring, 96a...operating shaft.

Claims (1)

[Claims] a motor drive assist mechanism that moves the head position control member from the stop position to the operating position when the assistant motor is in a driving state; a return mechanism that moves the head position control member from the operating position to the stop position when the assist motor is stopped; A head position detection switch that detects the head position by being engaged with the head position control member, and a head position detection switch t that is connected to the head position detection switch t to turn the assist motor into a stopped state and a driven state a predetermined number of times during cue i or review operation. 1. A tape recorder device comprising an assist motor control circuit that performs repetitive control.