JPS58189857A - Reversal switching device of tape recorder - Google Patents

Abstract

PURPOSE:To control the running direction surely without using a plunger, by providing an exclusive drive source driven forward and backward in response to the constant speed and the high speed running mode and switching the running direction with the drive section interlocked with the exclusive drive source. CONSTITUTION:Assuming that a main gear cam 41 is driven counterclockwise in the constant speed operation. As the cam 41 rotates, a reproducing slider 47 is slided toward the E, and heads 55, 82 are rotated corresponding to the running direction. In this case, a chassis 48 is slided to a prescribed position, and pinch levers 49, 50 are energized clockwise and counterclockwise. The current of an assistance motor 42 driving the cam 41 is made minute for the forward reproduction. When the current of the motor 42 is interrupted at the tape end, a head slider 48 is retrogressed to the slide start position with the energizing of a spring 70. The cam 41 is restored to the stop position with a returning spring 71 for the stop state. A reverse signal is given to the motor 42, the cam 41 is reversed and the reversal switching device 40 is brought to the reverse reproduction.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a forward/reverse switching device for a chip recorder, and in particular, to a forward/reverse switching device for a chip recorder. The present invention relates to a forward/reverse switching device for a tail cog that can reliably control the running direction.

Background of the invention and its problems] Conventionally, a chip recorder is provided with a forward/reverse switching device for switching the direction of travel of the chip.

This forward/reverse switching device normally controls the forward/reverse switching device using a pair of left and right gears 11 and 12, as shown in FIG.

That is, left and right playback sliders 14.15 are supported on the main chassis 13 so as to be slidable in the directions of arrows (4) and (B). One ends of the left and right transmission parts 16 and 17 were engaged.

And these left and right transmission levers 16, 77Fi,...
Its middle part is rotatably supported by the main 7 palm 13, and the other ends are the left and right Nora/Tsuyatsuno, 12.
Iron core part 1 horn, 21. Both were supported.

For example, when the right plant gear 12 is energized, its iron core 121 is attracted, and the right transmission lever 17 is rotated clockwise in the figure. At this time, the right regeneration slider 15 held at one end of the right transmission lever 17 is slid in the direction of arrow (4) against the spring force of the return spring 18, and the right regeneration slider 15 is Interlockingly, the hent slider 19 was also slid in the direction of arrow (4) against the spring force of the return spring 2o. Here, the recording/reproducing head 21 mounted on the toss slider 19 is brought into contact with the surface of the chi 76, and the right pinch lever 22 is rotated in conjunction with the right playback slider 15, and the right pinch roller 23 is rotated. is capstan 2
4, the tape was applied and the playback between the squares ran out. Similarly, when the left silan gloss 16 is energized, the left reproducing slider 14 is slid in the direction of arrow (4) by the left transmission lever 16 and is interlocked with the left reproducing slider 14. The recording/playback head 2 is here! - The left pinch roller 26 of the pressing roller 25 was brought into contact with the capstan 27 through the tape while being brought into contact with the tape corresponding to the 7th row direction, and reproduction between the opposite directions was performed. .

By the way, the forward/reverse switching device configured as described above uses two non-wires, which are placed on the front side, and requires a large power source, resulting in high power consumption and is not suitable for tape recorders. The maintenance costs were covered by the department.

In addition, the forward/reverse switching device provided in the tape recorder usually has a head moving mechanism that is interlocked with it.

And what about this forward/reverse switching device? During travel switching operation,
The head moving mechanism is operated to move the recording/reproducing head and the like in response to the tape running force +u].

However, the above-mentioned forward/reverse ψJ conversion device is
Because it was linked to DJ Shinsei, the structure was complicated, the production was complicated, and there was only one person on the club side.

[Purpose of the invention]

This invention was made in view of the above circumstances!
It is an object of the present invention to provide an inexpensive and good forward/reverse switching device for a tape recorder, which has a quantized structure and can reliably control the tape running direction without using run gloss.

[Summary of the invention]

That is, the present invention provides a dedicated drive source that is driven in forward and reverse directions in conjunction with the operation of the operation member for tape constant speed and stray running, and a drive unit that is rotationally driven in conjunction with this drive source to drive the tape in forward and reverse directions. Operate the switching mechanism to switch the tape running direction. Here, the drive section is locked at the first position where the switching operation is completed, and recording or constant speed reproduction of the tape is performed. ``Furthermore, in conjunction with the combined operation of the tape constant speed running operation member and the tape high speed running operation member, the drive section is controlled by a position detection member so that the head lightly touches the tape. It is characterized in that it is opened at position 2 and the tape is played back at high speed.

[Embodiments of the invention]

First, before describing one embodiment of the present invention, a basic example of a tape recorder to which the present invention is applied will be described in detail with reference to the drawings.

-r That is, FIGS. 2 and 3 are front and back side plan views showing the overall configuration of the tape recorder. Here, in FIG. 2, a pair of reel stands 32 and 33 are rotatably supported on the front side of the main chassis 31, which is formed in a substantially rectangular shape, at substantially the center thereof. Large-diameter gears 34, 35 are coaxially formed on the pair of reel stands 32, 33, respectively.

Further, in the upper part of 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 na! Reel motor 3 for running
6 (See Figure 3). 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 gear 37 is fitted into its tip. A substantially ring-shaped friction member 38 is provided on the cloth lfi side of the upper ml main shear 73 so as to surround this gear 370, and this friction member 38
There is a protrusion 38 corresponding to the upper ml reel stand 32, 33.
No is formed as one! are doing. Here, 1. This friction member 38 is in an interlocking relationship with the gear 37 with a moderate frictional force, and according to the direction of rotation of this -wheel 37, it rotates as shown by the arrow (C).
Q)) in the direction of (・1 force).

Further, a rotating shaft 182 is implanted in the protruding portion 381 of the upper gQ friction member 38, and this rotating shaft 182 has the above-mentioned -wheel 39
A gear 39 that meshes with the gear 39 is rotatably supported.

Here, when the wheel 37 is rotated counterclockwise in the figure by the reel motor 36, the friction member 38 is urged in the direction of the arrow. 7, the gear 39 supported by the protrusion 18 is engaged with the reel stand 330 and the wheel 35, and the reel stand 33 is rotated clockwise in the figure.

Then, the gear 37 is moved by the reel motor 36 to the member 3a.
A gear 39 supported by a protrusion 181 is meshed with a gear 34 of a reel stand 32, and this reel stand 32 is rotationally driven in the counterclockwise direction in the figure, allowing the tape (not shown here) to run in the forward and reverse directions. It is something. Further, the reel motor 36 is connected to an operation member (not shown) for high-speed tape running (recording,
The reel motor drive circuit, which will be described later, controls the rotational speed and direction of rotation in accordance with the operation of the operating member (forward and reverse direction playback) and tape high-speed running operation member (fast forward, rewind). Do it, above chee! When the operating members for constant speed and high speed running and the operating member for stopping Tesolui 1 (not shown) (including zoom) are operated, the following rono,
The control circuit is controlled so that the motor 36 can be rotated or stopped according to the operation.

On the main floor 731, the upper H'd IJ-
A forward/reverse switching device 40, which will be described later, is disposed at the lower part of the table 32, 33 in the figure. This forward/reverse switching device 40
A substantially disc-shaped drive unit, for example, a main gear cam 4, which will be described later.
The center of rotation of the main shear 731 is rotatably supported by a rotating shaft 411 implanted in the main shear 731, and a tooth portion 412 is formed on the outer periphery of the rotating shaft 411.

Here, a dedicated drive source such as an assist motor 42 is provided on the back side of the main chassis 31 corresponding to the main gear cam 41. As shown in FIG. 3, the rotating shaft of this anost motor 420 has a gear 43.
is rotatably supported, and this gear 43 has a reduction gear 44
45 and 46 are sequentially meshed with each other.

Then, the gear with the smallest diameter of the deceleration vehicle 46 that is farthest from the gear 43 protrudes toward the surface side of the main chassis 31,
It meshes with a portion 412 of the main gear cam 41. Therefore, when the upper gear 43 is rotationally driven by the unstopped motor 42, the rotation is caused by the reduction gear 44, 45.
The main gear cam 4 is rotated by 1 mm via the main gear cam 4. Here, the assist motor 42 changes its rotational direction and stop (motor lock) state according to the combined operation of the tape high-speed running operating member or the tape constant-speed and high-speed running operating member according to the above-mentioned rotation control circuit, which will be described later. It is controlled by an assist motor control circuit and an assist motor drive circuit.

Further, on the upper surface of the main ear cam 41, a playback slider 47 that is slidable in the direction of the arrow [with]) and a toss slider 48 that is slidable in the direction of the arrow 6) are sequentially arranged. It is set up. Therefore, when the main gear cam 41 is rotationally driven as described above, the playback slider 41 is selectively slid in the direction of the arrow (2)) or (g) depending on the direction of rotation, and the tape is played in the forward or reverse direction. Along with making it run in the direction.

The toss slider 48 is slid upward in the direction of arrow 0). At that time, details of the left and right pinch levers 49 engaged with both ends of the head slider 480 will be described later.
5O-1z is selectively rotated to bring the left and right pinch rows 51.52, which are rotatably supported by the left and right pinch levers 49.50, respectively, into contact with the left and right capstans 53 and 54 via the arzo. At the same time, the recording/reproducing head 55 mounted on the toslider 48 is brought into contact with the teno in a predetermined direction to produce a forward or reverse playback (recording) state. Here top record re head 5
5, the anomalous angle is made accurate to enable playback (recording) in the forward and reverse direction of the running direction of the chi, that is, forward and backward movements, and the chi! Depending on the run, Chee! The head rotation mechanism 56 is moved so as to come into contact with the pair of ↓6 and 6. This head rotation mechanism 56 will be described later.

Here, the left and right capstans 53 and 54 serve as rotation axes for the left and right flywheels 57 and 58, respectively, and are capable of rotating simultaneously without wobbling from the back side of the main shear 731 to the front side. It can be inserted freely.

Here, as shown in FIG. 3, on the layer side of the main chassis 3, the left and right capstans 53, 54
Correspondingly, a main motor 59 is provided on the right side of the figure.
This is the main motor. And this! - A belt 61 is passed between the flywheel 60 and the left and right flywheels 57,58. Therefore, this left and right flywheel 5
7.58, the rotation of the main motor 59 is transmitted through the belt 61, and is constantly driven to rotate in the central time d1 and counterclockwise directions.

Further, on the front side of the main shear 731, an innoect member 62 is located on the left part of the figure as indicated by the arrow (I) (J).
) is supported so as to be slidable in the direction.

The inoect member 62 is formed into a substantially rod shape and is disposed from the upper end to the lower end of the main shear 731 in the drawing. Then, this Inoect member 62 fits the through hole 62 formed at one end thereof into the sliding portion 311 formed on the main shear 731, and! After the shaft 312 formed in the main chassis 3 is loosely inserted into the through hole 622 formed at the other end thereof, it is held down by a retaining ring 313 to be slidably supported. A spring 63 is engaged between a housing stopper 623 formed in the approximate center of the inoect member 62 and an engagement shaft 314 formed in the main chassis 31. In particular, υ is biased in the direction of arrow (J).

Here, a lip portion 624 is formed at one end of the Inoect member 62, and when the cassette lid (not shown), which is normally biased in the direction of the open state by the lock portion 624, is closed, A portion of the cassette lid is opened to maintain the closed state. Then, when an operator (not shown) is operated, the inoect member 62 is moved in the direction of arrow (I) via the innoef slider 64, and the spring 63
It slides against the urging force of. Then, the opening of the inoect member 620 and the lip portion 6z4 are separated from the cassette lid, and the cassette lid is opened.

Further, on the main chassis 3, an erroneous erasure prevention member 68 comprising a cassette detection switch 65, a forward and reverse side erroneous erasure prevention switch, and a tilt 6° 67 is provided at the upper part VCl in the figure. It is being

Next, the forward/reverse switching device lt, 40 will be explained.

That is, as shown in FIGS. 4, 5, and 6, the main gear cam 41, which is freely rotatable and extends over the main chassis 31, is meshed with and supported by the small diameter gear of the reduction gear 48. There is. A curved protruding retaining portion 412 is formed on the lower surface side of the main gear cam 41 at the upper portion of the rotating shaft 411 in the figure, and a pair of return members, such as return levers 69 and 70, are arranged to sandwich the protruding retaining portion 412. is formed. The pair of return levers 69 and 70 are rotatably supported at their one ends by rotating shafts 691 and 701f respectively implanted in the main chassis 31.
In the intermediate portions thereof, curved portions 692 and 702 are formed, corresponding to the protruding retaining portions 412, respectively. −
Friend, on this pair of return J-69°70, locking portions 693, 703 are formed corresponding to the curved portions 692, 702, with the rotation axis of the main gear cam 41 as a boundary. It is.

The floor stop portions 693, 103 are arranged so as to sandwich the protruding engaging portion 315 formed on the main chassis 3. Further, the return levers 69 and 70 have engaging portions 694° and 704 formed at their other ends, respectively, and a return spring 71 is engaged between the engaging portions 694° and 704.

Here, the operation of the return mechanism configured as described above will be described later.

Further, a protrusion 413 that protrudes downward in the figure is formed on the rotating shaft 41 on the upper surface side of the main gear cam 4, and a protrusion 414 is formed in the protrusion 413 approximately in the center thereof.

Here, on the upper surface of the main gear cam 41, the regeneration slider 41, which has a substantially inverted T-shape, is disposed so as to be slidable in the direction of the arrow. A curved through hole 471 is formed in the area, and this through hole 47
A notch 472 is formed at one end of the hole. The through hole 471 has a protrusion 5 of the main gear cam 41.
413 is inserted, and the tip 415 of this protrusion 413 faces the cutout 472 of the through hole 471.

Furthermore, a substantially T-shaped through hole 473 is formed at one end of the reproduction slider 47, and this through hole 473 has a T-shaped sliding hole that is implanted in the main chassis 3J and protrudes from one side. Section 316 is in disarray. Furthermore, this reproduction slider 47 has a through hole 474 formed at the other end, and after loosely inserting the shaft 3 noah installed in the main shear S/31 into the through hole 474, it is held down with a screw 318. Along with being there,
An extension 475 extending to the right in the figure is formed at the central end thereof, and a shaft 319 implanted in the main chassis 3 is inserted into a through hole 476 formed in the extension 725 . Therefore, the above Takeo slider 47 bear arrow @) (F)
It is supported so that it can slide freely in the direction.

Furthermore, a recess 471 is formed in the reproducing slider 47 at approximately the center of the lower part of the spear, and a fitting part 478 is formed in the recess 477. A part of the head moving mechanism 56, which will be described in detail later, is engaged with this fitting portion 478.

Further, the playback slider 41 has bent portions 72 and 73 formed at one end and the other end of the playback slider 41, respectively. is formed. In detail, this locking part 721.731 has a bending part 491.501 of the fast-moving left and right bi/chile levers 49.50, and the arrow (■) of the above-mentioned reproduction slider 47).
9)) It is selectively locked in response to sliding in the direction.

Next, on the upper surface of the reproducing slider 47, a chassis 48 is disposed in a substantially inverted T-shape so that it can slide freely in the direction of arrows tG and (b). This head chassis 48 is
A recess 48 is formed at the tip -m of the central end, and the main shear 731 is inserted into this recess 481! lll691,
By inserting a shaft 483 with a constant length between the mouth parts 191, the mouth is guided in the direction of the arrows (G) and (B). The head 7 palm 31 is slid in the direction indicated by the arrow width until the bottom of the recess 481 comes into contact with the shaft 482.

Furthermore, a through hole 483 is formed at the central end of the chassis 48 to correspond to the rotation shaft 411 of the main gear cam 4, and a rotation hole 483 is formed at the lower end of the box hole 483 in the figure. 484 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.

Its friend, the head shear 748, rotates with the rotation of the main gear cam 41, and the main ear, the knob 41.
The tip portion 415 of the protruding portion 413 moves the reproducing slider 41 in □11 to a predetermined position, and the subsequent main gear cam 4
By the rotation of no.

The protrusion 414 engages with a portion of the rotation hole 484 and is slid to the υF home position.

In addition, bent locking portions 485 and 48 are formed to be approximately perpendicular to the corner portions of the circular leaks on the upper side of the chassis 48.
6 are set V respectively.

Then, this bending locking portion 485.48611L is connected to the left and right pinch rows 251, 5:I. The left and right pinch rollers 51 and 52 are each rotatably supported by one end of the left and right pinch levers 49 and 50, which are formed into a substantially U-shape on the side, and the other end is installed in the main chassis 31. rotation axis 492
, 502 are rotatably supported by -C, respectively. Also.

Projections 493 and 503 are formed at the other ends of the left and right pinch levers 49 and 50, respectively, in correspondence with the bent body base portions 72 and 73 of the reproduction slider 47. The bent portions 491 and 503 are formed respectively.

Furthermore, the left and right pinch levers 49,500 times excitation shafts 492 and 502 each have torsion snoring rings 74.
．． 75 is wound and attached.

One end of this Tone Yong X Knolling 74.75 is secured to the back part of 8Ll. And this tone 1/s! The other parts of the rings 74 and 75 are attached to the RAD slider 4 above.
It is held at a bending locking percentage of 8, 485,486 tl. Therefore, when the RAD slider 48 is slid in the direction of the arrow 1), the left and right bins fV"-49, 50 are -f:n counterclockwise in the figure and 9Y At this time, the left and right pinch levers 49
．． 5θ protrusion* 493.503 bend 549J.

50 is the arrow (9))C of the playback slider 47.
) direction, the query combination part 48
5,486 and prevents its rotation,
The other left and right bin teles/49, 50 are rotated so that the left and right pinch rollers 51, 52 are brought into contact with the left and right casostans 53, 54.

Here, a locking portion 487 is formed at a part of the head chassis 48 to correspond to the shaft 317 of the upper main chassis 310, and a locking portion 488 is formed at the other end so that the main chassis 731v slides. A part is formed corresponding to 316 and is bent. Using the lever, the chassis 48 is slid upward in the direction of the arrow (5) until the mounting table parts 487 and 488 come into contact with the shaft 317 and the sliding part 316 of the upper main chassis 3. There is. Here, the upper convex head slider 4
8 is biased in the direction of arrow (6) by a spring 76 being engaged between a locking piece 489 formed at the other end and the sliding portion 316 of the main chassis 3. has been done.

Further, a head mounting structure 77 of the rotation mechanism 56 is attached to the slider slider 48 at approximately the center thereof using screws 771.

This head mounting structure 77 includes a hemed base plate 78 and a hexagonal wheel 7.
9 is integrally supported, and a generally sector-shaped fan-shaped spout 80 that meshes with the gear 79 is rotatably supported at its base. In addition, a substantially cylindrical head support 81 is removed from the upper head stand +1i78, and this head support 81f is a micro force sensor! An upper recording/reproducing head 55 for the recorder and an erasing head 82 are fitted in parallel.

Here, with the mounting structure 77 attached to the slider 48, the contact surface of the chi f of the do 82 is connected to the reel stand 32, 33, and Being faced with.

Further, the fan-shaped gear 80 has a driven moving part 8 from its base.
01 is extended, and this driven portion 80 is interposed within the fitting portion 40B of the reproduction slider 47. Note that even when the head slider 48 is slid in the directions of arrows 0 and 6, the driven portion 80 does not separate from the fitting portion 408 and remains within the fitting portion 40B when the head slider 48 slides. It is something that will be done. Therefore, when switching the tape from the forward direction to the reverse direction and from the reverse direction to the forward direction, as the playback slider 47 is slid in the arrow @) and r) directions, the upper fan gear 80 is It is rotated around its central part VC.

For example, when the fan-shaped gear 80 is rotated counterclockwise in the figure, the gear 79 mated with the fan-shaped gear 80 is rotated clockwise in the figure.

Accordingly, as the float 790 rotates, the base plate 78 and the head support 8 are rotated in the same direction, and the recording/reproducing head 55 and the erasing head 82 are rotated by exactly 180 degrees. Here, let's take a look at what happens when a track is changed when switching between forward and forward tape running. Moreover, when the fan-shaped vehicle 80 is rotated clockwise in the figure, misfortune 79. Needless to say, the base plate 78 and the head support 81 are rotated in the d-1 direction in the figure, and the recording/reproducing head 55 and the Y0 head 82 are returned to their original positions.

Further, a pair of resting parts (not shown) are formed in a part of the head base plate 78, and a pair of resting parts (not shown) are formed on the above-mentioned and dome-mounting cypress bodies 77, corresponding to the locking parts of the first part. screw 772
, 773 are screwed on. Therefore, the knee head base plate 78 is rotated until one of the pair of rest portions comes into contact with the pair of screws 772 and 773 of the head mounting structure 77. Therefore, the screw screw 772.
By adjusting the screwing depth of 773, recording and playback, ys
s and the erase head 82 can be adjusted anomalously. - Also, for this recording and playback, the do 55 and erasing head 8
2 is connected to a drowsiness circuit (not shown) of a recording and reproducing system (not shown) via a connection line (not shown).

A pair of arrows are provided on the circumference of the head support 81 to indicate the tape running direction, and a pair of arrows are provided on the side of the head support 81 to support both ends of the tape in the width direction. A tape guide portion 83 is formed.

Furthermore, a torsion line ring 84 is wound around and attached to a part of the mounting structure 77, and one end of this torsion line ring 84 is attached to the (b) 1 middle slot of the upper gear 79. In addition to being locked, the other parts are the fan-shaped vehicles 80.
It is locked at the base of. Therefore, the head support 7
8 is stably held in two positions in the tape-forming and reverse running states by the biasing force of the torsion strip ring 84.
(It is something that

Next, the operations of the forward/reverse switching device 40 and the return barrel configured as described above will be explained in detail. First, in the V state where the operation is stopped as shown in FIG. It is assumed that the main gear cam 4 is rotationally driven in the counterclockwise direction in the figure by operating the constant speed running operation member (forward direction regeneration).

Then, as shown in FIG. 7, as the main gear cam 41 rotates, the protruding portion 413 of the main gear cam 41 is engaged with the notch 4720 on the right side of the reproducing slider 47 in the figure, and the reproducing slider 47 is ■) slide in the direction. As the reproducing slider 47 slides, the recording/reproducing door 55 and the erasing door 82 are rotated by the head rotation mechanism 56 in accordance with the tape running direction. At this time, the projection 414 of the projection 413 of the main gear cam 4 is engaged with the stone 11411 in the figure of the rotation hole 484 of the Herad slider 48. With the subsequent rotation of the main gear cam 41, the regeneration slider 47 moves in the direction of the arrow as the tip 415 of the protrusion 413 comes into sliding contact with the curved portion 47 of the regeneration slider 47, as shown in FIG. Although not biased in the (g)) direction, the don chassis 48 is biased in the direction of the arrow 6) by the protrusion 414 of the protrusion 413, and is slid at the predetermined position 1. At this time, the left and right pinch levers 49 are engaged with the torsion strip rings 74 and 75 at the bending fastening portions 485 and 486 of the toss slider 48.
．． 5Of, the clock in the figure and the bite time h1 are biased to 10'', respectively. At seven points, this left and right pinch lever 49.
50, since the reproducing slider 47 is located in the direction of the left pinch point/(-49, the reproducing slider 47 is closest to the arrow), the reproducing slider 47 is engaged with the locking portion 72 at one end thereof and its rotation is prevented. On the other hand, the right pinch lever 50 is rotated clockwise in the figure without being engaged with the engagement part 73 at the other end of the raw slider 4, and as described Pinch roller 52 contacts right canostan 54 - J r
L. Here, the unstuck rotor 42, which rotationally drives the main gear cam 4I, is supplied with a very small amount of flow and is brought into a rotary state, and the chive is regenerated in the forward direction. It depends on what you do.

Here, the front 6 self-returning mechanism configured below the main gear cam 4 is extended as shown in FIG. 9 by the rotation of the main ear cam 4 in the counterclockwise direction. One end of the retaining part 412 is the return lever 69 on the left side in the figure.
As it rotates, the urination lever 69 rotates in the direction d1 in the figure about the rotation shaft 69 against the spring force of the urination spring 71. -a will be. At this time, the return lever 70 on the right side of the figure is held in place by the protruding locking portion 316 of the main chassis 3, so that it cannot be rotated in the direction of 8F in the figure. and,
As shown in FIG. 10, when the recording/reproducing head 55 and the erasing head 82 complete the rotation, that is, when the head slide 48 starts sliding, the protruding retaining portion 4 of the main gear cam 41
12 (l) is moved along the curved portion 692 of the return lever 69 as it rotates, and further this return yJ
-59 is rotated 1 clockwise in the figure. Therefore, the 11th
As shown in the figure, due to the rotation of the main gear cam 4), one end of the protruding floor part 412 is moved to the return lever 69.
When the return lever 690 is located at one end of the curved portion 692, rotation of the return lever 690 is stopped. As shown in FIG. 5i412, when the head slider 48 slides for a photon L7, the approximate center of the protruding engaging portion 412 of the main gear cam 41 is at one end of the curved portion 692 of the return lever 69. is in contact with. At this time, the return lever 69 is moved by the return spring 5 held in a part thereof (see the arrow).
It is biased in the direction.

In addition, in the above-mentioned forward playback state, there is a terminal end detection device that does not cause any leakage at the end of the chive.
L was determined, and the current supply to the assist motor 42 was cut off.

Suppose that Then, as shown in Figure d
be retreated in the direction of

Here, when the head slider 480 is retracted, the upper main ear cam 41 is rotated clockwise in the figure by the biasing force of the return spring 71, and the head slider 480 is rotated as shown in FIG. The slider 4M7 is moved back to the sliding m start position. At this time, the bending locking portion 485.4 of the dosry finish 48
8fi, the pressure and right pinch levers 49 and 50, which are respectively engaged, are simultaneously moved in the direction of the hour hand and the counter-hour hand in the figure, so that the left and right bi/tirrer rollers 51, 52 are moved to the left and right camera buttons 53, 54-1. )・I'm about to vomit after withdrawal.

Here, the main ear cam 4 positioned as described above is thereafter moved downward to the stop position by the spring force of the return spring 71 of the front h-pi return mechanism. That is,
As shown in FIG. 15, the main gear cam 41 is
The eO protruding engagement 5412 is returned by the spring force of the spring 71,
By being moved along the curved portion 629 of the return lever 69 on the left side in the figure, the main gear cam 4 is rotated in the Rat direction in the figure, and is in the stopped state shown in the 16th row. be. At this time, the protrusion of the main gear cam 41 (by the D tip 415) caused the regeneration slider 47Fi to be biased in the direction of arrow (6), and the rotation of the main gear cam 4 in the clockwise direction in the figure? C is slid in the direction of the arrow @) until it reaches the stopped position.

When the motor is returned to the stopped state as described above, the reverse rotation signal No. 16 is sent to the assist motor 42, and the assist motor 42 is driven in reverse. Then, main gear cam 4
1 is reversed and rotated clockwise in the figure, and the forward/reverse switching device 40 is operated to create a reproducing state in the reverse direction.

That is, as shown in FIGS. 17 and 18, as the main ear cam 41 rotates in the tefiT direction in the figure, the tip 415 of the protrusion 5413 is held in the left side of the notch 484 of the playback slider 47. This playback slider 4
7 in the direction of arrow (G). Here, as the reproduction slider 47 slides, the aforementioned head rotation mechanism 5
6& From here, the -question head 55 is rotated in accordance with the direction of thrusting. At this time, the protrusion 414 of the protrusion 413 of the main key cam 41 breaks down.
It is engaged with the portion 1j on the left in the figure of the rotation hole 484 of the toss slider 48. -f: Trowel, main ear cam 4 above
With the subsequent rotation of the reproducing slider 47, as shown in FIG. The head chassis 48 is urged in the direction of arrow 6) by the projection 414 of the projection 413 and is slid to a predetermined position. At this time, the bending locking portions 485, 48 of the head slider 48
Talk to 6.

The left and right pinch levers 49,50, which are engaged through the grip rings 74,75, are biased counterclockwise, 51, and clockwise in the drawing. Therefore, among the left and right pinch levers 49.50, the right Bi/Chire/4-59 has the external slider 47 located furthest in the direction of the arrow (F'1), so the other end of the playback slider 47 The left pinch lever 49 is locked to the stop portion 73 and prevented from rotating.On the other hand, the left pinch lever 49 is locked to the thread stopping portion 72 at one end of the regeneration slider 47.
It is rotated counterclockwise in the direction 6 in the figure without being stopped by the
As mentioned above, the left pinch low 251 is the left Kyagustan 5.
3. Here, as described above, the assist motor 42 is supplied with a very small current, and is brought into a motor locked state, and the tape is reproduced in the reverse direction.

Here, the return mechanism configured on the lower surface side of the main gear cam 41 has been described above. As the main ear cam 41 rotates clockwise in the figure, the other end of the protruding retaining portion 412 avoids engaging with the curve 5702 of the return section 9-70 on the right side of the figure, and this return section 9-70 is rotated counterclockwise in the figure J [direction] about the rotation axis 701 against the spring force of the return spring 7). Except for this, the return lever b9 on the left side in the figure cannot be rotated counterclockwise in the figure because of the stopper 6j of the protruding rest portion 315e of the twin chassis 3). Then, with the rear rotation of the main gear cam 41,
The protruding retaining part 4-2 allows the right side of the figure to be returned.
The marr 70 is further rotated counterclockwise in the figure.

In the reproducing state in the opposite direction in which the sliding of the RAD slider 48 is photon, the protruding retaining portion 41 of the main gear cam 41
2, the approximate center thereof is the curved portion 70 of the return lever 70.
2, and is held in place at one end of 2.

Next, the tape recorder is connected to a control circuit ((This will be explained below. That is, as shown in FIGS. 19, 20, and 21, the Ronok control circuit 85 is connected to the power supply 53), The seventh ground ym (GND) is grounded.The control circuit 85 has its forward playback input terminal (F, PLAY), reverse playback input terminal (P, PLAY), and recording terminal. Input terminal (Rgc), fast forward input terminal (F, F,), rewind input terminal (IIW), stop input terminal (5TOP), and pause input terminal (pu+sE)
are connected to switches 86 to 92 which are grounded.

Therefore, the lock control circuit 85 is operated by the switch 86.
When the switches 86 to 92 are operated, the inputs i F', PLAY, R, PLAY corresponding to the switches 86 to 92 are activated.
, Rk:C, RIilW, F, F', .

5Tt)P and PALJ81i: are set to the ground level, that is, low level (hereinafter referred to as L level). Then,
The forward direction playback input terminal 4 (F, out) and the four direction output terminal (D, out) corresponding to the input terminal that has reached the L level are
t), recording output end (REC, out), rewind output end (1M', out), fast forward output end (F, F,
out) and the pause output terminal (PAUSg, out) become No. 1 level (hereinafter referred to as H level), and based on this No. 16, the assist motor 42, reel motor 36, and main motor 59 are controlled to run and stop the tape. etc. will be done.

Here, the assist motor 42 is a transistor Ql+Qs*Q3 connected in a grit-like manner.
+ Q Connected between the midpoints of 4. Of these transistors Ql + Qs Twsl Q4, each of the transistors Q1 + Qz on the lower side in the figure has its base connected to the above-mentioned clock control circuit via diodes Dl, D and resistors R1, R. 85 forward playback output end (F, out) reverse direction M/)E output end (R
, out). In addition, the transistors QsrQ4 on the upper side of the diagram are connected to each other's collectors through resistors R, , R4, respectively, and their Are the emitters the above-mentioned a/st motor 420.4L style? r: connected to the controlling transistor Qs (f- via Km, CB); The pace of this transistor Qi is connected to the collector of a transistor Q6 via a tuna diode D1 which is connected to the power supply () through a resistor R, and the pace of this transistor Q6 is connected to a diode D4 and a resistor I (, ? is connected to the information output terminal (T, out) of the logic control circuit 85.

Further, the fast forward output terminal (F,
F, out) and the return/return output terminal (R, out) are connected to one input terminal of NAND circuits N1 and N3, respectively, and the other input terminal of these NAND circuits N1 and N is connected quickly. a NAND circuit N connected to the selection switch 93;
are commonly connected to the outputs of -. Also, the NAND circuits N□, N.

The output terminals of each of them are in the self-assist mode.
42 is a NAND circuit N4t that recognizes normal rotation or inversion signals.
They are commonly connected to the input terminals of the NAND circuits N-, and are also connected correspondingly to the input terminals of the NAND circuit N-. Here, the output ends of the drive circuits 1'J, , N are connected to the connection ends 94, 95 of the assist motor drive circuit, and the assist motor 42 is activated in response to the operation of the switch 86 or 81. It is designed to be stopped or reversed.'
The output terminal of the NAND circuit N is connected to one input terminal of the NAND circuit N1, and the other input terminal of the NAND circuit N is connected to the Mk detection switch 96 via the resistor Rγ. At the same time, its output terminal is connected directly to one input terminal of the NAND circuit N-. In addition, the NAND circuit N, which is commonly handled by scientists at the output terminal of the NAND circuit N,
, is a core function C! and are connected to one input end of the NAND circuit Nl through the resistor R,. The other input terminal of this NAND circuit NIe &:h is connected across the other input terminal of the above-mentioned NAND N, and the output terminal thereof receives a current control signal via a capacitor C-. There is a connection field to the NAND circuit Nil to be extracted. The output end of this NAND circuit N11 is connected to the connection end 97 of the assist motor drive circuit.

Next, the 1iJ reel motor 36
Transistors Qv +Qs pQs eQl are connected in a pristine configuration in substantially the same way as in case 42. connected between midpoints. This transistor Qt.

Of Qs +Qs pQto, each trannostar Qy+Q on the lower side of the figure has its pace connected to the forward reproduction output terminal (F, out) of the Ronok circuit 85 through the diodes D, , D@ and resistor RIeR1O, and the reverse direction. It is connected to the endogenous output terminal (R,out). Also, the above transistor Q? Of +Q@+Qs+Q+o, each transistor Q@+Q1゜ on the upper side in the figure has its pace connected to each other's collector via a resistor R11+R12, respectively 7L1, and its emitter controls the current of the reel Tanabata 36, respectively. m! through the transistor Qtt configured as follows. # There is a connection dam in (B). The pace of this transistor Q■ is connected to the collector of the transistor Qll through a Zener diode D7 which is connected to the power supply 53) through a resistor R1m.
The pace of this transistor Qsz is connected to the forward direction reproduction output terminal (F, out) and the reverse direction reproduction output terminal of the above-mentioned rotor control circuit 85 through a common diode Ds and a resistor R14, a diode D, and a resistor R1K, respectively. (R,ou
t).

In addition, the main motor 59 has one end damaged,
The other end is connected to the collector of the transistor Q1s. The emitter of this transistor Q1s1 is connected to a power supply (B), and its base is connected to the collector of the transistor Q1□ via a resistor R1.

That is, when a power switch (not shown) is operated to perform playback in the forward direction, the information output i4i (T, out) of the logic control circuit 85 is set to H level. Therefore, if the switch 86 is operated at time T, [7], the IJ output terminal (T,ou
t) becomes L level, transistor Q@ is turned off, and the square reproduction output terminal (F, out) becomes H level, turning on transistor Q1. Then, the assist sweater 42 is supplied with enough current to be driven in a predetermined direction for a predetermined time (until time T), and is driven to stop rotating. Therefore, as described above, the main gear cam 4 is rotationally driven to operate the forward/reverse switching device fj to run the tape in the forward direction.

At this time, in conjunction with this switching operation, the head rotation mechanism QfJyb is operated to bring the recording/reproducing head 55 into contact with the tape surface in accordance with the tape running direction, and the right pinch lever 50 is rotated. At ll1J-a rL, the right pinch roller 52 is brought into contact with the right cag stan 54 via the tape. At this time, "Niki Rono.

The signal output terminal (T, out) of the control circuit 85 becomes H level, and the transistor Q is turned on. Therefore, the upper assist motor 42 is supplied with a small predetermined current and placed in a low motor state, and the tape is then played back in the forward direction.

On the other hand, the reel motor 36 is connected to the transistors Q7 and Q at time T3 when the assist motor 42 is turned off.
12,000 and is driven.

Therefore, this reel motor 36 is driven at a rotational speed and a rotational direction corresponding to the constant speed running of the tape in the forward direction, and as described above, the gear 39 meshes with the gear 35 of the reel stand 33 to move the tape at a constant speed in the forward direction. What happens to running?

Here, the main motor 59 is driven by the transistor Q+i being turned on at time Tl when the positive direction regeneration switch 86 is operated. As mentioned above, this main motor 59 rotation is caused by the rotation of the left and right canon methane 59.
3.54 left and right flywheels 57 and 5 respectively
8.

Next, in the state in which the power switch is operated, the switch 87 is turned on at time TI in order to perform reproduction in the reverse direction.
Suppose you operate Then, as described above, the IJ output voltage (T, out) of the Ronok control circuit 85 becomes L.
level, transistor Q6 is turned off, and
The reverse playback output terminal (R, out) becomes H level,
Transistor Q! is turned on. Then, the assist motor 42 is supplied with enough current to drive in a predetermined direction for a predetermined time (until time Ts) and is driven in reverse.

Therefore, as described above, the main gear cam 41 is rotationally driven to operate the forward/reverse switching device to run the tape in the reverse direction. At this time, in conjunction with this switching operation, the head rotation mechanism 56 described above is operated to start recording and playback, and the head 55 comes into contact with the tape surface in accordance with the tape running direction, and the left pinch lever 49 is rotated. As a result, the left pinch roller 5 comes into contact with the left steering wheel b3 via the tape. At this time, the signal output terminal (T
, out ) becomes H level, and the transistor Q
・is turned on. Therefore, a small predetermined current is supplied to the assist motor 42, the motor is brought out of the locked state, and the tape is played back in the reverse direction.

On the other hand, the reel motor 36 is driven with transistors Q1m and Qa turned off at time T when the assist motor 42 is motor-locked.

Therefore, this reel motor 36 is configured to have a rotational speed and a rotational direction corresponding to constant speed running of the tape in the i direction, and as described above, the gear 39 meshes with the gear 34 of the reel base 32, and the tape is fixed in the reverse direction. Fast running takes place.

Here, the main motor 59 is driven by turning on the transistor Qu at the time Tl when the switch 87 is operated, as in the case of the above-described forward direction regeneration.

In addition, when the switch 89 is operated to run the fast-forward tape, the fast-forward output terminal (F
. .

At this point, switch 90 is turned on to run the tape back.
When operated, the reel motor 36 is connected to the rewinding output terminal (RLW, Out) of the tape rewinding circuit 85 (not shown), and the reel motor 36 operates at a rotational speed and rotation corresponding to the tape rewinding state. It is driven in the direction, and stable rewinding movement is achieved.

Also, in order to perform fast-forward playback (cue), switch 8
Assume that 6 and 89 are combined to yield 7. Then, the selection switch 93 is turned on, and the output terminal of the NAND circuit Ns goes to L level, and the fast forward output terminal (F, F, out) of Ronok control circuit 85 goes to H level. Therefore, the output terminal of the NAND circuit N4 becomes H level, transistor Q1 of the assist motor drive circuit is turned on, and transistor Q is turned off as described above, so that the assist motor 42 receives a current sufficient to drive it in a predetermined direction. is supplied and normal rotation IEA# is performed. Therefore, the main gear cam 41 is rotationally driven (2) the forward/reverse switching device is operated,
It functions to run the tape in the forward direction, and also rotates the recording/reproducing head 55 in accordance with the tape running direction.

Thereafter, as described above, the head feeder 48 is slid to start recording/playback, and the position detection switch 96 is turned off before the do 55 touches the chi f surface and the pinch roller 52 comes into contact with the right canno stun 54. Ru. Then, the NAND circuit N・
,Nγ.

Ng * Ng # NAND circuit N by N111
The output terminal of il becomes H level, and the transistor Q@ of the assist motor drive circuit is turned on. Therefore, a small amount of current is supplied to the upper 6 self-assist Tanabata 42, and the motor is brought into a slow state, and fast-forward playback (cue) is performed.

Here, it is assumed that the switches 87 and 9o are operated in combination in order to perform rewind playback (review). Then, the selection switch 93 is turned on, the output terminal of the NAND circuit N1 becomes L level, and the Ronok control circuit 85
The zero rewind output terminal becomes H level. Therefore, the output terminal of the main/dead circuit Ns becomes H level, and the transistor Q of the assist motor drive circuit is turned on, and as described above, the transistor Q is turned off, and the assist motor 42 is turned off.
is supplied with a current that extends in a predetermined direction and is reversely driven.

Therefore, the main gear cam 4 is rotationally driven, and the forward side operates the switching device, functioning to run the tape in the forward direction, and also rotate the recording/reproducing head 55 in accordance with the tape running direction. Thereafter, as in fast-forward playback, the toss slider 48 slides, the recording/reproducing head 55 comes into contact with the tape surface, and the position detection switch 96 is turned off before the left pinch roller 51 comes into contact with the left cassette stan 53. Then, NAND circuit N@r N7 + Ng rN*
r N10 causes the output terminal of the NAND circuit N11 to go to H level, and the transistor Q of the assist motor drive circuit
6 is turned on. For this reason, the assist Tanabata 42 is supplied with a minute current and is brought into a motor lock state, at which time rewind playback (revue) is performed.

Here, one embodiment of the present invention will be described in detail below with reference to the drawings regarding the tail recorder which is a basic example as described above. That is, FIG. 23 is a six-turn side plan view of the tail recorder showing the overall configuration of the forward/reverse switching device, and FIG. 24 is an exploded view showing the square structure of the forward/reverse switching device.
? Figure 1g and Figure 25 are 10-circle diagrams showing the back side of the main 7 palms. First, in Figure 23.

A pair of reel stands 32 and 33 configured as described in the basic example of the tail recorder are rotatably supported on the main shear 731. This reel stand 32.3
3 is the main shear 731 as described in the basic example above.
The tape is rotated by a solid reel motor provided on the back side of the tape via a solid gear to run the tape in the forward and reverse directions. This reel motor is
As mentioned in the basic example of the chip recorder above, depending on the operation of the operation member for constant speed tape running (recording, forward and reverse direction curing) and the operation member for constant speed tape running (fast forward, reverse) (not shown), The rotation speed and rotation direction are controlled by the reel motor drive circuit. Also.

Above day! When the constant-speed and high-speed running operation members and the not-shown tenor run-stopping operation member (including fl?-z) are operated, the above-mentioned tape recorder has almost the same effect as the basic example of the above-mentioned tape recorder. The forward/reverse switching device shown in FIG.

That is, on the main shear 731, a substantially disc-shaped drive unit, for example, a main gear cam 4JA, is rotatably supported on a rotating shaft A implanted in the main chassis 31. This main gear cam 4JA has a toothed portion A2 formed on its outer periphery, and a pair of protrusions AJ and A2 on its upper surface.
4 is formed.

Here, the main gear cam 4JA is connected to the deceleration gear 44 as shown in FIG. 25, as in the basic example of the tape recorder.
, 45 and 46, and is meshed with a gear 43 supported on the rotating shaft of the assist motor 42, and is driven to rotate in response to the rotation of the assist motor 42.

Incidentally, the assist motor 42 is used as the maintenance member for constant speed running or as a maintenance member for constant speed running. As described in the basic example of the tape recorder above, the rotational direction and stop (motor lock) state are determined according to the combined operation of the operating members for constant speed and high speed running. It is controlled by a drive circuit.

Further, on the upper surface of the main gear cam 47A, there are left and right Niu sliders 47B that are approximately inverted.

47C is attached, this left and right playback slider 47B,
Cutouts BJ and CJ are formed on one side of 47C, respectively. This notch Bl.

C1 has a pair of projections A of the main gear cam 41.
J and AJ are each facing type, and this main gear cam 41
Playback slider 47B to the left or t depending on the rotation direction of
, 47C are biased in the direction of arrow IG).

Here, this left and right Nyu slider 47B.

47C has a locking portion B2. near the cutout portion Bl and CI, respectively. C2 is formed, and these locking portions B2 and C2 are respectively inserted into a pair of sliding holes DI and D2 formed in the toss slider 4jD, as will be described later.

Also, the left and right playback sliders 47B.

47C has a through hole BJ at each other end.

C3 is formed, and this through hole B3. Shafts 318 and 319, which are implanted in the main chassis 31, are respectively inserted into C3. Therefore, this left and right Nyu slider 4
7B and 47C are supported slidably in the directions of arrows 6) and (6), respectively.

Here, this left and right playback slider 47B.

47C has a locking portion B4 at one end thereof. C4d; respectively formed, and this locking portion B4. C4 is opposed to locking shafts 316 and 317 provided on the main chassis 31, respectively. Use the lever to move this left and right Niyu slider 47.
B, 4FCv retaining part B4. C4 is the left and right Nyu slider 47B.

When 47C is retreated at a predetermined position l in the direction of arrow (6),
They are respectively locked by the locks @316 and 317, and are prevented from retreating.

Also, Saturday and Sunday Cu and right Nyu slider 47B.

47C has its locking portion B4. Each bending body stop part B5 is provided near the BS. C5 is formed, and seven other sharply bent engaging portions B6. C6 is formed respectively. This engaging portion B6. C6 has Toshi and l/Sgeling 47D, respectively.

47g is attached to the left and right playback sliders 47B,
47C is configured to be biased in the direction of arrow (b).

Here, the left and right playback sliders 47B.

Left and right pinch rollers 51 and 52 are disposed at the folding ItII locking portions BS and C5 of 47C, respectively. The left and right pinch rollers 51 and 52 are rotatably supported at one end of the left and right pinch levers 49 and 50, which are each formed into a substantially U-shape on one side.
The other end portions of 9.50 are implanted in the main chassis 3 and rotatably supported by fc rotation shafts 492 and 502, respectively. Also, this left and right Bi/Teleper 49,5
A torsion spring 14.75 is wound around the 00 rotation shafts DI and EJ, and one end of the torsion spring 74.750 is engaged with the back surface of the left and right pinch levers 49.50, respectively. ing. So(
7, the other ends of the torsion springs 74 and 75 are the left and right playback sliders 47B.

47C bending locking part B5. It has been suspended since C5. Therefore, the left and right playback sliders 47B, 47
C slides in the arrow ←) direction71. Then, the left and right pinch levers 49.50 are rotated counterclockwise and clockwise in the figure 7 to connect the left and right capstans configured as described in the basic example of the Teso recorder above. 53.54
It is something that comes into contact with.

Also, upper ml left and right playback sliders 47B.

48F is arranged so as to be slidable in the direction of arrows 1) and 6. This head slider 48F has a concave portion Fl formed at the tip of its central end, and one shaft F2 provided in the main chassis 31 is inserted into these four portions, and the convex portion F1 is inserted into these four portions. A pair of shafts F3. are installed on both sides of the main chassis 3. Each is placed on F4.

Therefore, the slider 4gF is slid in the direction of the arrow ←) until the bottom of its four parts F1 comes into contact with the shaft F2.

Here, a through hole F5 is formed in the approximately medium heat section of the helad slider 48F, and the rotation center import 1 of the main gear cam 41 is inserted into the through hole F5. The pair of sliding holes F are provided in both parts of the through hole F5.
6°F7 is formed, and this sliding hole F6. As mentioned above, F7 has left and right playback screws 47B.

Locking part B2 of 47C. C2 is inserted respectively.

Therefore, when one of the left and right regeneration sliders 47B and 47C is slid in the direction of arrow (G) by the main gear cam 41k, the slider 48F slides in the direction of arrow (G) along with the sliding. It is something that is moved.

Further, the upper slider 48F1 has a bent portion F8 formed at one end thereof, and a spring 76 is engaged between this bent portion F8 and the shaft 317 indicated by -h. Therefore,
The Rad slider 48F is biased in the direction of arrow (6) by the spring force of the spring 76.

Here, on the upper surface of the Rad slider 48F, a pair of erasing heads 82G are provided at the lower side in the figure.

82H are attached at predetermined intervals. A head mount F9 is attached to the middle part of the pair of doors 82G and 82H, and a collar head 55I (4) rack inline) is mounted on this head mount F9 for vertical movement. It is freely installed.

In addition, to the above, the tosslider 4JIF has 1M1 below it.
A Pf curve piece FIG is formed in one part, and this fjrtIu piece F101f'i is secured to a direct detection member, such as a detection part Jl of a position detection switch 4FIJ. Therefore, this position setting switch 411J is turned on when the head slider 48F is strictly positioned in the direction of the arrow 0), that is, when the Q7 recorder is stopped, and this head slider 481' slides in the direction of the arrow 0). Then, the upper recording/reproducing head SSR is turned off in the fast-forward and rewind playback state when it lightly touches the not-illustrated chi-f surface, and the operation is carried out smoothly.

In other words, in order to perform playback in the forward direction, Day! When the constant speed running operation unit (forward direction playback) is operated, the main gear cam 41 is rotated in the direction of the hour hand in the figure, as described above in the basic example of the 6-wheel Dale coder. Then, as shown in FIG. 26, the right-circle protrusion A4 of the main gear cam 47A presses the notch C of the right regeneration slider 470, causing the right regeneration slider 47C to move toward the torsion spring 4.
The force of arrow (G) is extended by sliding against the spring force of 7E. At this time, the stopper C2 of the right playback slider 47C presses the notch F7q of the Herad slider 48F, causing the head slider 48F to move toward the arrow (G) against the spring force of the spring 70.
) direction. Here, this head slider 48
When recording/playing the tape mounted on F, the do 55 is in contact with the tape surface corresponding to the tape running direction, and the right pinch lever 50 is
is rotated clockwise in the drawing by the right reproducing slider 48C, and the stone pinch roller 52 comes into contact with the right diaphragm stan 54 via the tape. At this time, similar to the basic example of the tape recorder described above, the assist motor 42 is supplied with a minute current to be brought into a motor lock state, and the tape is then played back in the forward direction.

Here, in the above-mentioned forward playback state, in order to stop the D'f recorder, the D'f recorder is stopped. It is assumed that one reed member for stopping traveling is operated and one ωL supply to the assist motor 42 is cut off. Then, as shown in FIG. 27, the head slider 48F is moved backward in the direction of the arrow (6) by the spring force of the spring 76, and the right playback slider 47C is similarly moved in the direction of the arrow (6) by the spring force of the torsion ring 74F. ) direction and urinate securely until they reach the stop position.

At this time, the main gear cam nJA& is rotated in the -1 direction in the figure as the right reproducing slider 47C retreats, and is surely returned to the stop position as in the basic example of the tape recorder.

Furthermore, when the tape constant speed running operation member (reverse direction playback) is operated to perform playback in the reverse direction, the main gear cam 4JA is rotationally driven in the 11 direction in the figure, as described in the basic example of the tape recorder. Ru. Then, as shown in FIG. 28, the protrusion A3 on the left side in the figure of the main gear cam 4JA presses the notch B1 of the left regeneration slider 47B.
This left playback slider 47B is toshi, snoring 47
It is slid in the direction of arrow (G) against the spring force D. At this time, the lock 11sB2 of the left reproduction slider 47B presses the notch F6 of the Herad slider 4BF, and slides therein in the direction of the arrow ←) against the spring force of the spring 70. Here, the recording/reproducing head 551 mounted on this head slider 48F is brought into contact with the arc surface corresponding to the tape running direction, and
As a result, the left camera/tilt mer 49 is rotated counterclockwise in the figure, and the left pinch row 251 is brought into contact with the left capsmen 53 via the tape. At this time, as in the basic example of the tape recorder described above, the assist motor 42 is supplied with a minute wg and enters the motor rotation state, at which point the tape is played back in the reverse direction.

Here, the reel motor and main motor 59 are driven as described in the basic example of the tape recorder, and function in any way to run the tape in the forward and reverse directions.

In addition, in the case of fast-forwarding and rewinding tape running, the reel motor is driven at the rotational speed and rotational direction corresponding to the fast-forwarding or rewinding state of the tape, as described in the basic example of the tape recorder, and the tape is kept stable. It can be fast forwarded or rewinded.

Next, in order to perform fast-forward playback (cue) and end-of-winding playback (review), one Song-made member for Daeg constant-speed walking (stop and reverse direction playback) and the operation member for constant-speed tape running (fast-forward and rewind ), the main gear cam 41k is rotationally driven in response to this operation as described in the basic example of the tape recorder. Then, as described above, the left or right playback slider 47B or 47C and the head slider 48F are slid in the direction of the arrow in FIG.
As shown in FIG. 30, when the recording/reproducing head 551 lightly touches the tape surface in the tape running direction, the position detection switch 4JJ is turned off. At this time, the assist motor control circuit is controlled by the ronok control circuit and the 77° stromotor control circuit described in the basic example of the tape recorder, and the assist motor 42 is supplied with a small amount of current and brought into a motor lock state. . Therefore, the main gear cam 41
The scale is fixed at a predetermined position, and a device is placed here that allows reliable fast-forward or backward playback (cue or review).

Alternatively, as shown in FIGS. 31 and 32, a rotary head (two tracks) can be used to generate the flame. That is, the left and right playback sliders 47B used in the 'AM example above.

47C, there is a notch Bl, and an approximately inverted-shaped extension B7 at the bottom of CI in the figure. C7 are formed facing each other. This extension part B7. The tip of C7 has a bent portion B8. CB are formed to face each other, and this bent portion B&.

The tips of C8 are stacked on top of each other. This bent part B
8. C1j has an inclined portion B9.
C9 is formed such that its tip is inclined from its end to its end.

Next, instead of the fixed head used in the above-mentioned large embodiment, a rotating head structure 56 is attached to the tosslider 48F as described in the basic example of the above-mentioned Chief Record Cog. To this end, the rotation mechanism 56 has a fan-shaped driven portion 80 which is upwardly tilted by the inclined portion B9 of the left and right reproduction sliders 47B and 47C.
It is held at °C9. Therefore, this driven m80
1 is the left or right playback slider 47B.

470 arrow CG) direction, the inclined part B9t
or C9&, and the fan-shaped wheel 80 is rotated. At this time, as described in the basic example of the tail recorder, the recording/reproducing head 55, erasing head 82, etc. are arranged in the tape running direction.

Here, the left or right playback slider 47B.

47C, so that after the rotation of the rotation mechanism 56 is completed and the recording/reproducing head 55 is adjusted to the tape running direction, the slider 48F is slid in the direction of the arrow (G). Left and right playback sliders 17B, 47C
The locking part B2. C2 and sliding hole F of henode slider 48F
A predetermined space is provided between 6 and F7.

That is, as described in the above embodiment, the main gear cam 4
1k is rotationally driven, the playback slider 4 is moved to the left or right depending on the direction of rotation as shown in FIGS. 33 and 34.
7B and 47C are slid by arrow C), I>1ijJ. This K or Ru P'' raw slig 47B, early printing of 47C! With the exception of vI, the head four-way rotation mechanism 56 is operated by the inclined portion B9-4 or C9, and the recording/playback starts 1. The head 55 and the head 82 correspond to the running direction of the head, and the locking portion 82 of the left neck or stone regeneration slider 47B, 47C. C2 is the 9-notch part F6 of the henode slider 48F.
It is locked at F7. Therefore, with the pressure or finger movement in the arrow (G) direction after the stone regeneration sliders 4yn, 4yc (DJC17), the henode slider 48F slides in the arrow (G) direction as shown in FIGS. 35 and 36. When the recording/reproducing head 55 and Y8 are moved, the recording/reproducing head 55 and the dot 82 are brought into contact with the recording/reproducing head 55 and the recording/reproducing head 82, and playback is stopped or reversed.

Here, in the above-mentioned upward and reverse playback VO, the supply of the anost motor 42v) 1&L flow is cut off, which is a trap.

Then, as shown in FIG. 32 and FIG.
1. The torque/slip rings 47D, 47B and the spring 76 are securely returned to the stop position 1'th from the 1st position.

At this time, main-A! Giam 41 people, left side Marutan 1
(/47B, 47C are returned to the center of the medulla to the stopping position as they retreat.

In addition, according to the above example, if there is no error n< It goes without saying that the actions of (and Lego You) are despised.

〔Effect of the invention〕

As described above, the purpose of the present invention is to reliably switch tape running by using a drive unit that is recirculated by a dedicated drive source without using a continuous drive, and to switch the tape running at a constant speed or at a constant speed. 11 of an inexpensive tail recorder with an extremely simple structure that can reliably control aging and cut off the current supply from the drive source to ensure that the forward/reverse 9-way switching mechanism and the drive section return to the resting position. A fish switching device t can be provided.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a conventional tail recorder IL reverse 1m device, and Fig. 2 is a front side plan view showing the overall #1 configuration of a basic example of a tail recorder to which the present invention is applied. ,
FIG. 3 is a plan view of the surface side, FIG. 4 is an exploded perspective view showing a forward/reverse switching device as a basic example of the present invention, and FIG. 5 is a plan view showing the structure of the main gear cam on the surface side. FIG. 6 is a plan view showing the configuration of the private mechanism disposed on the front side of the main gear cam, and FIGS. 7 and 8 are plan views showing the operation of FIG. 5. Figures 9 to 16 are plan views showing the operation in Figure 6, Figures 17 to 19 are plan views showing the operation in Figure 5, and Figure 1120 is a diagram showing the assist motor, reel motor, and main motor. Figure 21 is a circuit configuration diagram showing an example of each drive circuit for applying appropriate current to the assist motor, and Figure 22 is a circuit configuration diagram showing an example of the control circuit for the same assist motor during high-speed tape running. The figure is a timing diagram showing the constant speed running and stop switch, the output end of the Ronok control circuit, and the inertia state of each motor. FIG. 23 is a plan view showing an embodiment of the present invention. FIG. 23 is an exploded perspective view showing the square crystal structure on the front side, FIG. 25 is a plan view showing mx on the back side of FIG. 23, and FIGS. 26 to 30 show the operation of FIG. 23. A plan view, FIG. 31 is a plan view excluding another embodiment of the present invention, FIG. 32 is an exploded perspective view showing the square crystal structure on the front side 1 of FIG. 31, and FIGS.
FIG. 7 is a plan view showing the operation of FIG. 31. 31... Main chassis, 32... Reel stand, 33
...Reel stand, 34...Gear, 35...Gear, 3
6...Reel motor, 31...Gear, 38...*
Wire member, 39...-thing, 40... Forward/reverse switching device, 4
No...Main gear cam, 42...Assist motor,
43... - car, 44... deceleration - car, 45... deceleration gear, 46... deceleration - car, 47... regeneration slider,
To 48..., toss slider, 49... left pinch lever, 50... right pi/chileper, 5 no... left pinch roller, 52... right hinch roller, 53... left canostan, 64... ...Right Kyazostan, 55...To Rokutan,
To, 66... Rotating mechanism, 57... Left flywheel, 58... Right flywheel, 59... Main motor, 60... Nori, 61... Belt, 62...
... Inoect member, 63... Spring, 64... Inoect slider, 65... Cassette detection switch, b
6.67...-Erasing prevention switch, 68...-Old and old support member, 69...Return lever, 70...Return lever, 7...rA spring, 74...Torsion Snoring, 75...Torsion Sfring, 76...
Spring, 77... Head mounting moving body, 78... To base plate, 79... Spacer, 80... Mausoleum-shaped gear, 81...
82... Erasing head, 83... Tape guide portion, 84... Tone. Snoring, 85.
...Rono, control #circuit, 86...switch, 87.8
&. 89.90, 91.92...Switch, 93...Selection switch, 94...Connection end, 95...Connection end, 9
6...Position detection switch, 97...Connection end, 41k
...Main gear cam, 47B...Left playback Sushiida,
47C...Right playback slig, 47D...Torsion snoring, 47E...Torsion snoring, 48
F...Head slider, 82G・°゛Elimination head, 8
2K... To erase, Do, 55I... To Cod Tan, Do, 4J
tJ...Jun: Position detection switch. Applicant's Representative Patent Attorney Takehiko Suzue Figure 26 Figure 27F4 9 28 Sen No. 29 p No. 30 m 31st Cabinet Figure 33 If 34 Sen No. 35 Figure 36 F No. 374

Claims (1)

[Claims] A dedicated drive source that is driven in forward and reverse directions in conjunction with the operation of operating members for constant speed and high-speed tape running, and a dedicated drive source that is rotationally driven in conjunction with this drive source to make the head correspond to the direction of travel of the chip and to control the direction of travel of the tape. A drive unit that operates a forward/reverse switching mechanism to switch the forward/reverse switching mechanism, and a position detection member that is turned on/off at a predetermined position during switching of the forward/reverse switching mechanism, the tape constant speed running operating member being interlocked with the operation. The drive section is locked at the first position where the switching operation is photonized, and the drive section is operated in conjunction with the combined operation of the operation member for constant tape running and the operation member for high speed tape running. The second head is controlled by the position detection member and the head lightly touches the chi 2.
A forward/reverse switching device for a tail recorder, characterized in that it is locked in the position.