JPS5994270A - Cassette tape recorder - Google Patents

Abstract

PURPOSE:To obtain a cassette tape recorder of a simple constitution which can be miniaturized with high operability by setting the interlocking positions between a pair of control members and a pair of pinch levers at the rear side of each rotary shaft of the paired pinch levers when viewed from a cassette half. CONSTITUTION:In a reproduction mode of a tape, a tape end detecting mechanism detects the tape end and turns a detection lever to the clockwise direction. Then a reverse driving lever 83 is turned to the counterclockwise direction. In this case, the lever 83 presses a side of a projected part 847 of a gear 84 via a guide pin 832 and turns the gear 84 slightly clockwise. Thus the gear 84 engages a gear 50 of a right flywheel 27 and is turned to shift a reproduction slider 38 toward an arrow F or E. As a result, the slider 83 actuates the 1st or the 2nd switch slider 39 or 40 to switch the tapt traveling to the forward or reverse direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a cassette chip recorder device intended for miniaturization.

[Technical background of the invention and its problems]

Recently, cassette tape recorders have become smaller and lighter, making them more portable and especially popular.

Two-way stereo type tapes that are exclusively used for playback have become popular, allowing users to enjoy tape playback while walking, for example, by wearing headphones. These portable cassette tape recorders designed exclusively for headphones have already been made as small as possible, and at present they are almost as large as a cassette case that accommodates tape cassettes and cassettes. There is.

By the way, the next requirement for this type of miniaturized cassette and tape recorder is to organically connect the various mechanical parts and add an auto-reverse function and a recording function to improve usability. Power saving measures must be taken to reduce power consumption.

However, it has been difficult to add the above-mentioned requirements to cassette tape recorders that are aimed at miniaturization because they have many disadvantages that impede miniaturization.

For example, cassette tape recorders that are designed to be more compact have a problem in that the number of mechanical parts increases, making the configuration more complex and larger. This was the biggest obstacle in adding .

However, there is a need to promote miniaturization, control each mechanical part in an organic and efficient configuration, and to take power-saving measures to reduce power consumption, and to reduce the cost.〇 [Object of the Invention] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cassette tape recorder device which has a simple structure, can be downsized, has good operability, and has a good structure.

[Summary of the invention]

That is, the present invention provides a cassette tape recorder device comprising a pair of capstans and an auto-reverse mechanism that allows the tape to run freely in forward and reverse directions, the intermediate portions of which correspond to both ends of the base of the cassette holder. A pinch roller is rotatably supported at one end facing the pair of capstans, and has a retaining portion at the other end so as to be in constant contact with the pair of capstans. A pair of pinch levers to which a biasing force is applied, and a pair of pinch levers that are movable toward and away from each other in correspondence with each engaging portion of the pair of pinch levers, and are interlocked with the auto-reverse mechanism to move the pair of pinch rollers between the pair of pinch levers. and a control member for controlling one side of the capstan to be in contact with the capstan and the other side to be in a depressed state, and the engagement positions of the pair of control members and the engaging portions of the pair of pinch levers are as described above. It is characterized in that it is set behind the six rotation axes of the pair of pinch levers when viewed from the cassette half.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. Figures 1(,) and (b) are, respectively,
A cassette tape recorder to which this invention is applied is
) and the state seen from the side. That is,
Reference numeral 11 denotes a box-shaped cabinet approximately the same size as a cassette case for storing cassettes and cassettes, and one plane part of this cabinet 11 is used as a cassette.

A lid 12 is provided. And this cassette lid 12
The user manually selects arrows (4) and (B) in Fig. 1(b).
It is opened and closed by rotating in the ) direction, and is lightly locked in the open and closed positions and supported to prevent wobbling. Further, the cassette lid 12 has a cassette holder 5-', the details of which will be described later, on its back surface. This cassette holder is linked to the opening/closing operation of the cassette lid 12.
It is capable of holding a tape cassette 13 shown by the dashed line in FIG.

Here, in the cabinet 11, there are provided a storage section 14 capable of accommodating the upper ml tape cassette 13 with the cassette device 12 closed, and a mechanism storage section 15 in which a tape recorder mechanism section, which will be described later, is installed. ing. Also, in the cabinet 11, a recording/playback head (hereinafter referred to as a recording/playback head), an erasing head, a pair of right and left pinch rollers, etc. are installed in a portion of the cabinet 11 facing the exposed tape side of the tape cassette 13. A head s16 comprising a head s16 is disposed. This head portion 16 is linked to the opening/closing operation of the cassette lid 12 together with the cassette holder.

As shown in FIG. 1(a), inside the storage section 14, a tape cassette 130 is fitted with a pair of reel hubs (not shown) and has a pair of right and left reel hubs that are rotated in accordance with the running direction of the tape. Reel axis 17.1
8 are respectively disposed on the cassette lid 12. Also, the right and left reel shafts 17.1, which are on the tape winding side during fast forwarding and rewinding (when the tape runs in the forward and reverse directions), are respectively disposed on the cassette lid 12.
A fast forward operator 19 and a rewind operator 20 are provided at positions opposite to 8, respectively. These fast forward and long rewind operators 19.20 are connected to the right and left reel shafts 17.18.
The rotary shaft 1'll, 181 of the rotary shaft 1'll, 181 is installed so as to be operable so as to be pressed in the axial direction thereof.

The cassette lid 12 also has a stop control 21, a playback control 22, and a recording control 23 at a position corresponding to the head 16, a tab, and a position not facing the flat surface of the tape cassette 13 to be stored. and manual reverse operator 2
4 is installed substantially perpendicular to the curve of the cassette lid 12 so as to be operable to suppress it. Furthermore, a window portion 25 is provided approximately at the center of the cassette lid 12. This window portion 25 is made of, for example, a transparent acrylic plate, and serves as a part of the tape see-through window of the tape cassette 13. They are placed so that they overlap.

Here, among the upper six pica set lids 12, the fast forward and rewind operators 19, 20 and the stop operator 21 1!1 have similar slopes M extending outward from the storage s14 side. Twelve long holes are formed. This elongated hole 121 is used for radio reception using a tuner back (not shown).

This is so that the channel selection operation can be performed with the door 12 closed. That is, this cassette tape recorder is not only capable of simply playing back and recording tapes, but also can receive radio broadcasts using its own tuner pack. This is done by loading the above-mentioned tuner pad, in which the tuner circuit section for receiving, tuning, detecting radio waves, and #1 width is housed in the casing, into the storage s14 instead of the tape cassette 13. be. Then, when you select a desired broadcasting station by operating the tuning dial provided on the tuner pack, the received radio waves are detected and amplified, and then sent to the main amplifier circuit in the cassette recorder via the connection terminal. It is installed and played through headphones to receive radio broadcasts. Except for this, with the cassette lid 12 closed, the tuner/
Since the adjustable channel selection dial is inserted through the elongated hole 121 and protrudes to the outside, the channel selection operation can be performed without opening the cassette lid 12.

Further, on the side of the cabinet 11 corresponding to the manual reverse operator 24, a number limit switch for setting reverse, which will be described later, is provided. Furthermore, a volume adjustment dial, a headphone jack, etc. (not shown) are provided on the side of the cabinet 11.

Here, FIG. 2 shows the overall appearance of the tape recorder mechanism section, the front section 16, the cassette holder, etc. installed in the mechanism storage section 15. That is, 26 is the main chassis of the tape recorder mechanism section, in which the right and left reel shafts 17 and 18 are rotatably supported and slidably supported in the axial direction. 26 is provided with a pair of right and left capstans 27.28, which are rotation axes of right and left flywheels to be described later, and the right and left reel shafts 17.18, and
Motors 29 and the like that rotate these are supported. A cassette holder 30 is supported at one end of the upper main chassis 26 so as to be rotatable in the directions of arrows (A) and (B) in the figure. Tape skein.

Holds 301 and 302 are formed so as to sandwich both ends in the width direction of the grip 13 (see FIG. 1(b)) in the thickness direction. Further, an upper recording/reproducing head 31 and an erasing head 32 are supported approximately at the center of the cassette holder 30.
A pair of right and left pinch rollers 33 and 34 are supported so as to sandwich the recording/reproducing head 31 and the erasing head 32. These right and pressure pinch rollers 33 and 34 are installed so that they can selectively approach and separate from the right and left capstans 27° 10-28 in response to constant speed running of the tape in the forward and reverse directions, as will be described later. . Further, the cassette holder 30 has the above-mentioned stop.

Playback, recording and manual reverse controls 21°22.2
3.24 are supported so as to be freely pressable.

The cassette lid 1 is attached to the cassette holder 30.
2 (see Figure 1(,)(b)) is stored and installed, and at this time, the stop, play, record and manual reverse controls 21, 22 and 23, 24 are projected to the outside. It is used for external operation. Here, when the cassette lid 12 is opened, the cassette holder 30 is rotated in the direction of arrow (4) in FIG. At this time, the above stop, play, record and manual reverse controls 21.22.2B
, 24, the recording/reproducing head 31, the erasing head 32, the right and left pinch rollers 33 and 34 are moved together with the cassette holder 30.

Next, the configurations of the tape recorder mechanism section and the main section 16 will be explained. That is, in FIG. 4, the cassette holder 30 is located at the middle lower part of the main chassis 260.
(See FIG. 2) A recording/reproducing head 31, an erasing head 32, right and left pinch rollers 33, 34, and the like are located. Of these, a recording/reproducing head 31 and an erasing head 32 are supported by the cassette holder 30 via a disk chassis 35. It is loosely fitted above, and the arrow (
It is rotatably supported in the C) and CD) directions. Further, a substantially central portion of the right pinch lever 36 is rotatably supported on the rotation shaft 351. The right pinch lever 36 has one end rotatably supporting the right pinch roller 33 about the rotation shaft 351, and the other end has a driving section having an inclined portion 36. 362 is formed.

Here, as mentioned above, one end of the head chassis 35 is locked to one side of the head chassis 35, and the other end is locked to the case and toe holder 30 by winding the rotation shaft 351. The rotating shaft 3 is rotated by a spring (not shown).
It is urged to rotate in the direction of the arrow about 51.

The right pinch lever 36 is connected to the right pinch lever 3.
6 and the above-mentioned helad chassis 35 to rotate in the direction of arrow (C) about a rotation shaft 351 by a spring (not shown).

Additionally, the chassis 3 is placed above the cassette holder 30.
5, a left pinch lever 37 is installed at a position substantially symmetrical to the right pinch lever 36. The left pinch lever 31 has a substantially central portion supported by a rotating shaft 371, and the left pinch row 234 is rotatably supported at one end on the right side in the figure about the rotating shaft 371. At the same time, a driving portion 373 having an inclined portion 372 is formed at the other end on the left side in the figure.

The left pinch lever 5vFi is biased to rotate about the rotation shaft 37 in the direction of arrow 13-97C) by a spring (not shown).

Here, a playback slider 38 is installed on the lower surface of the cassette holder 30 and is moved in the direction of the arrow (0, (F') corresponding to the tape running direction. In other words, the main chassis 26 shown in FIG. Shafts 260, 261 are provided at the middle and lower ends.
, 262 are implanted, and these shafts 260, 261,
262 is a long hole 380 formed in the reproduction slider 38.
゜381.382f Play slider 3 by being divine
8Fi arrow (bound) (F'1 direction).The playback slider 38 has a drive section 362, 373 of the right and left pinch levers 36, 37 at both ends thereof. A protrusion 3B3.3114 is formed, and first and second switching sliders 3, which will be described later, are formed.
9. Bent engagement portions 391 and 40 formed at 40, respectively.
the first and second retaining pieces 38 that can be engaged with the first and second retaining pieces 38;
5,386 are formed. Here, the protrusions 383 and 384 formed on the self-reproducing slider 38 connect the tip of the loaded tape cassette 13 (see No. 114-h (b)) and the cassette holder 30 (see FIG. 3, 8). It is located between the center of rotation and the center of rotation.

That is, when the playback slider 38 is slid in the direction of the arrow (G), the right pinch lever 36 is moved by the protrusion 383 on the right side in the figure to move the right pinch lever 36 to the inclined part 361 of the drive part 362. The left pinch row 233 is pressed against the right capstan 22 because it is pressed and rotated in the direction of arrow (C) against the urging force. On this occasion,
The left pinch lever 37 is rotated in the direction of the arrow by the biasing force of the spring when the protrusion 384 on the left side in the figure of the regeneration slider 38 is positioned at the tip of the inclined portion 372 of the drive section 373. The left pinch row 234 is separated from the pressure capster 72B.

Furthermore, when the regeneration slider 38 is slid in the direction of the arrow (F'), the left pinch row 234 is brought into pressure contact with the pressure capster/28 and the left pinch roller 33 is moved to the right cap. It is separated from the stand 27.

As shown in Fig. f7), the right and pressure pinch levers 36 and 37 are driven by the protrusions 3B3 and 384 of the reproduction slider 38 formed between the tip of the chip cassette 13 loaded with the center of rotation of the cassette holder 3o. It was configured as follows. Therefore, the right and pressure pinch levers 36 and 37 require only a small operating stroke, improving operability and preventing malfunctions when inserting the tape cassette 13.

Further, as shown in FIG. 5, FIG. 6, and FIG. 7, a substantially U-shaped playback drive member 41 is installed at the left end in the figure of the head chassis 35 supported by the cassette holder 3o. A retaining portion 411 extending from one end of the reproduction drive member 41 is engaged with one end of the above-mentioned spare chassis 35. The playback drive member 41 is attached to the end of the main chassis 30 under the cassette holder 30 with an arrow mark (
G) The cassette holder 30 is supported so as to be rotatable in the direction G).The cassette holder 30 is disposed opposite to the playback drive member 41, as described above, and the playback operator 22 is An operating shaft 221 that protrudes toward the lower surface extends from one end of the holder. Further, a through hole 222 is formed at the other end of the playback operator 22, and this through hole 222 is formed at the other end of the playback operator 22.
22, a recording operation element 23 is inserted therethrough so as to be freely operable. The recording operator 23 has an operating shaft 231 extending from its lower surface substantially parallel to the operating shaft 221 of the playback operator 22, and each of these operating shafts 221, 231 is supported by the cassette holder 30. It is inserted through and supported by the bearing member 42.

Furthermore, the operating shaft 221 of the playback operator 22 has a bottom surface of a first driving section 223 having a substantially conical shape. be done. The top of the first drive section 223 is connected to the top of a substantially conical second drive section 225 via a shaft 224, and the bottom surface of the second drive section 225 is connected to the bottom surface of the regeneration drive member 41. 17 are facing some of them. - The bottom surface of a first driving section 232 having a substantially conical shape is attached to the operating shaft 231 of the hero recording sound operating element 23. This first drive section 232 has its top connected to the shaft 2.
33 to the top of a substantially conical second drive section 234, and the bottom surface of the second drive section 234 is connected to a substantially U-shaped recording drive disposed in parallel with one end of the playback drive member 41. It is opposed to the bottom part of the member 43. The drive section 232 of the vg1 can be engaged with a retaining section 412 that is bent at the top of one end of the regeneration drive member 41. Further, a driving portion 431 is formed at one end of the recording driving member 43 facing the engaging portion 412 of the reproducing driving member 41 so as to be engageable with a bending engaging portion 441 of a recording slider 44, which will be described later.

Here, the recording slider 44 is as shown in FIG.
This is omitted for the sake of illustration, and the details will be described later.

That is, suppose that the now playback operator 22 is suppressed in the stopped state shown in FIG. At -1, the bottom surface of the second drive section 225 of the regeneration operator 22 presses the bottom surface of the regeneration drive member 4, causing the regeneration drive member 41 to rotate in the direction of arrow (G).

Therefore, the engagement portion 411 of the playback drive member 41 rotates the head chassis 35 (see FIG. 4) as described above, brings the recording/playback head 31 into contact with the tape, and pinches the right and left sides. The rollers 33 and 34 are pressed against the right and right capstans 27 and 28 via tape. The playback operator 22 is locked at the operating position, and its locking mechanism will be described later.

It is also assumed that both the playback and recording controls 22 and 23 are suppressed as shown in FIG. 6 while recording is not being performed.

Then, as shown in FIG. 8, the bottom surface of the second drive section 234 of the recording operator 23 presses the bottom surface of the recording drive member 43, rotating the recording drive member 43 in the direction of arrow (G). let

Therefore, the recording driving member 43 is slid in the direction of the arrow (b) with its driving portion 431 pressing the recording slider 44 . Here, the recording slider 44 turns on a recording/playback switch (not shown) to put the circuit into a recording state, and also brings the erasing head 32 (see FIG. 5) into contact with the tape. 23, the bottom surface of the first drive part 232 is in the operating position, and the regeneration drive member 41 is
It is engaged with and locked by the engaging portion 412 of.

On the other hand, when the playback operator 22 is operated, the recording/playback head 31 is brought into contact with the tape as described above, and the right pinch row 233 is pressed against the right capstan 27 through the tape. A recording is made.

Here, the above-mentioned recording is, for example, a one-way recording of only the forward running state of the tape, the details of which will be described later.

Here, as shown in FIG. 4 again, the motor 29 is installed approximately in the center on the right side of the main chassis 260, and the rotation shaft 291 of the motor 29 is
A pulley 45 with a small diameter is fitted. Further, the above-mentioned right and left flywheels 46, 4fl are rotatably supported at the lower end of the main chassis 26 in the drawing, and these right and left flywheels 46, 41 and the pulley 4 are rotatably supported.
5, a belt 49 is wound around it via an intermediate pulley 48 so that rotational force can be transmitted.

Here, the rotation axes of the right and left flywheels 46, 47 are the cloth and the left capstan 21, 28, respectively. And the above right and left 72 wheels 4
6.47 are coaxially formed with gears 50.51 having small diameters.

Here, among the cloth and left reel shafts 17.18 provided approximately at the center of the main chassis 26, the left reel shaft 18, which is on the winding *b side when the tape runs in the reverse direction, is as shown in FIG. It is installed in the main chassis 26.

That is, the left reel shaft 18 is attached to the main chassis 26.
A through hole 263 is formed in the portion where the is attached.

A bearing member 53 having a substantially cylindrical shape and having a flange portion 531 with a larger diameter than the through hole 263 at the lower part 21- in the figure is inserted into the through hole 263, and is connected to the peripheral edge of the through hole 2630. The collar portion 531 is fixed.

The left reel shaft 18 is located inside the upper gear bearing member 53.
A rotating shaft 181 is rotatably inserted therethrough.

Further, the portion of the rotating shaft 1810 that protrudes above the bearing member 53 is inserted through a through hole 541 formed at the bottom of the bottomed cylindrical lock portion 54, and then the reel cap 55 is fitted. ing. Here, this reel cap 5
5 is rotated integrally with the rotating shaft 181, but the locking member 54 is independent of the rotating shaft 181. A coiled spring 56 is interposed between the upper end of the bearing member 53 and the locking member 54, and the rotating shaft 181 is moved upwardly through the upper H pillow member 54 and the reel cap 55. is energized by

Furthermore, a pressing portion 542 and an engaging portion 543 that are inclined in the folding direction are formed at the lower end of the opening member 54. Of these, the suppressing portion 54222- is the engaging portion 39 formed on the first switching slider 39.
2, and the locking portion 53 is also lockable to a lock slider to be described later.

Further, the bearing member 53 also has a rotating shaft 1 protruding downward.
The diameter of the portion 81 is made slightly smaller, and the smaller diameter gear 57 is fitted into the smaller diameter portion. A large-diameter gear 58 is fitted into the lower end of the small-diameter gear 57 and is slidably provided in the axial direction with respect to the rotating shaft 181 .

Here, the large-diameter gear 58 is urged upward by a coiled spring 59 interposed between it and the washer 182 attached to the lower end of the rotating shaft 181.
It is fitted with the small diameter gear 57 mentioned above. A switching drive lever 60 rotatably supported by the main chassis 26 is mounted on the upper surface of the large-diameter gear 58.
The driving portion 601 is engaged, and as the switching drive lever 60 rotates, the driving portion 601 presses the large-diameter gear 58'f in the axial direction to change the small-diameter gear 58'f. 5
7 is disengaged from the fitting.

Here, as shown in FIG. 4 again, the main chassis 2
A shaft 264 is implanted in the intermediate portion between the left reel shaft 18 and the left flywheel 47 of No. 6. This axis 264
As shown in FIG. 8 again, a large-diameter gear 61 and a small-diameter gear 62 are rotatably supported. And between the large diameter gear 6 and the small diameter gear 62,
A substantially ring-shaped friction member 63 is interposed. Further, a stop 64 having a substantially cylindrical shape and having a fitting portion 641 is fitted to the lower end of the small diameter gear 62 of the shaft 264. The gear 62 with a small diameter is
The large diameter gear 61 is pressed through the friction member 63'1'', and the large diameter gear 61 and the small diameter gear 62 are interlocked.

Here, the large diameter gear 61 is meshed with the gear 51 of the left flywheel 47 and the left reel shaft 18.
The small diameter gear 62 can be meshed with the large diameter gear 58 of the left reel shaft 18. The large-diameter and small-diameter gears 61, 62 are selectively meshed with the small-diameter and large-diameter gears 57, 58 of the left reel shaft 18, respectively, so that the tape moves at a constant speed in the opposite direction. In the running state, the small diameter gear 62 and the large diameter gear 57 of the left reel shaft 18 are in mesh with each other, and in the tape rewinding state, the large diameter gear 61 and the small diameter gear 58 of the left reel shaft 18 are in mesh with each other. It is something that is combined.

On the other hand, among the cloth and left reel shafts IT and IS, the right reel shaft 17, which is on the winding side when the tape runs in the forward direction, is installed in the main chassis 26, as shown in FIG. That is, a through hole 265 is formed in the main chassis 26 at a portion where the right reel shaft 17 is attached. A bearing member 66 having a substantially cylindrical shape and having a flange portion 661 with a larger diameter than the through hole 265 is inserted into the through hole 265 and is inserted between the peripheral edge of the through hole 265 and the flange portion. 661 is fixed.

The stone reel 44 is located inside the upper +e bearing member 66.
A rotating shaft 111 of 117 is inserted rotatably.

Further, the portion of the rotating shaft 111 that protrudes above the bearing member 66 is inserted into the through hole 671 formed at the bottom of the bottomed cylindrical locking member 67, and then inserted into the reel character f6.
B is fitted. Here, this reel cap 68
is rotated integrally with the rotating shaft 171, but the locking member 67 is independent of the rotating shaft 171. A coiled spring 69 is interposed between the upper end of the bearing member 66 and the locking member 67, and the rotating shaft 171 is connected to the upper pillow member 67.
and is urged upward via the reel cap 68. Furthermore, a pressing portion 672 and an engaging portion 673 that are inclined in a predetermined direction are formed at the lower end portion of the locking member 67. Of these, the suppressing portion 672 is capable of engaging with an engaging portion 402 formed on the second switching slider 40, and the retaining portion 623 is engageable with a lock slider to be described later. It is considered possible.

Further, the rotating shaft 1 protrudes below the bearing member 66.
The diameter of the portion 71 is made slightly smaller, and the smaller diameter gear 70 is fitted into the smaller diameter portion. A large-diameter gear 71 is fitted into the lower end of the small-diameter gear 70 and is provided to be slidable in the axial direction with respect to the rotating shaft 171 . Here, this gear 71 with a large diameter is connected to the rotating shaft 17.
A coiled spring 72 is interposed between the washer 172 and the washer 172 layered on the lower end of the gear 1, which urges the gear upwardly, thereby fitting the gear 70 with the small diameter. A driving portion 731 of a switching drive lever 73 rotatably supported by the main chassis 26 is engaged with the upper surface of the gear 21 having a large diameter. Accordingly, the driving portion 731 presses the large diameter gear 71 in the axial direction to instantly break the engagement with the small diameter gear 7o.

Here, the shaft 26 is located at the intermediate portion between the right reel shaft 17 of the upper H main chassis 26 and the reel shaft 264.
6.267 is planted. Of these, the shaft 266 has
A cocoon weight 74 is rotatably supported, and this minus wheel 74 is meshed with a small diameter gear 62 of the shaft 264. The gear 74 is engaged with the large-diameter gear 701C of the right reel shaft 17 when the tape is running at a constant speed in the forward direction, and rotates the right reel shaft 12 at a constant speed.

Further, the gear 74 is operated at a detailed kf when the stone reel shaft 17 is suppressed and the tape is running at a constant speed in the reverse direction.
As mentioned above, the resident gear 7 of the right reel 1lIlI117
Since the teeth are slid in the axial direction, their meshing is released.

- A gear 75 is rotatably supported on the upper M11267, and this gear 75 meshes with the gear 61 that resides on the shaft 264. Then, the gear 75 meshes with the small diameter gear 70 of the right reel shaft 17 when the right reel l11112 is pressed.
7 is driven to rotate at high speed.

Further, as shown again in FIGS. 4 and 9, a rotation shaft 268 is implanted in the intermediate portion of the right and left reel shafts 17, 18 of the main chassis 26. This rotation axis 26
8 is the first and second switching slider 3 having an abbreviated shape.
9 and 40 are stacked and supported so that they can rotate independently of each other. The retaining part 392 is formed at one end of the first switching slider 39 and is inclined so as to face the pressing part 542 of the left reel shaft 18 . A protruding suppressing portion 393 is formed. This suppressing portion 393 is engaged with a protrusion 732 formed on the other end of the switching drive lever 73 that is engaged with the large-diameter gear 71 of the right reel @17. Further, the first switching slider 3
As described above, the bending engagement portion 391 is formed at the other end of the slider 9 to correspond to the first retaining piece 385 of the reproduction slider 38.

29- On the other hand, a retaining portion 402 is formed at one end of the second switching slider 40 and is inclined to face the pressing portion 672 of the right reel shaft 17. Opposed and protruding suppressing portions 403 are formed. The suppressing portion 403 is engaged with a protrusion 602 formed on the other end of the switching drive lever 60 that is engaged with the large-diameter gear 58 of the left reel shaft 18 .

Further, at the other end of the second switching slider 40, the bending engagement portion 401 is formed to correspond to the second retaining piece 386 of the reproduction slider 38, as described above.

That is, the first and second switching sliders 39.40
is rotated in conjunction with the suppression operation of the present and right reel shafts 18 and 17 to control the tape running system to a still running state, and also to slide the playback slider 38 in the operating state of the auto-reverse mechanism described later. The tape running system is controlled to be in a constant speed running state by being rotated in conjunction with. For example, when the right reel shaft 12 is subjected to a suppressing operation 30-, the right reel iMl [7, the small and large diameter gears 70°7] are moved together with the rotation shaft 121, as shown in FIGS. 10 and 11. The gear 10, which has a smaller diameter, is slid in the axial direction and is meshed with the gear 75, making it possible to rotate at high speed.

At this time, the pressing portion 672 of the stone reel shaft I7 presses the retaining portion 402 of the second cut-back slider 40 to rotate it counterclockwise in the figure. Here, the switching drive lever 60 that engages with the large-diameter gear 58 of the left reel shaft 18 is pressed by the suppression portion 403 of the $2 switching slider 40 and rotated. For this reason, the large diameter gear 5B is slid in a narrow direction by the switching drive lever 60 to release the meshing with the small diameter gear 62.

Further, as shown in FIGS. 12 and 13, when the left reel 1118 is pressed, the left reel I+Ij J
The small and large diameter gears 5'l and 511 of g are the rotating shaft 18
1, the gear 57 with the smaller diameter meshes with the gear 61 with the larger diameter, making it possible to rotate at high speed.

At this time, the pressing portion 542 of the left reel shaft 18 presses the retaining portion 392 of the first cut-back slider 39 to rotate it clockwise in the figure. Here, the switching drive lever 73 that engages with the large gear 7 of the right reel shaft 17 is pressed by the suppressing portion 393 of the first switching slider 39 and rotated. Therefore, the large diameter gear 21 is slid in the axial direction by the switching drive lever 73 to release the gear 24 from meshing with the gear 24.

Here, as shown in FIG. 14, when the playback slider 38 is slid most in the direction of the arrow (clockwise), the upper gt second switching slider 40 transfers its bending engagement 5391 to the second switch of the playback slider 38. This VA is rotated counterclockwise in the figure by the retaining piece 386.As shown in FIG. , the protrusion 602 is connected to the second
is pressed by the suppressing portion 403 of the switching slider 40 and rotated. Therefore, the large diameter gear 58 is slid in the axial direction with respect to the rotating shaft 181 by the driving portion 60 of the switching drive lever 60, and the meshing with the small diameter gear 62 is released. On the other hand, the first switching slider 39 has its bent engagement portion 39 connected to the tenth engagement piece 3 of the reproduction slider 38.
85, the large-diameter gear 71 of the right reel shaft 17 maintains its meshing state with the gear 74, and the right reel shaft 17 is allowed to rotate at a constant speed. .

Further, as shown in FIG. 16, when the playback slider 38 is slid the most in the direction of the arrow (Fl),
The first switching slider 39 has its bending engagement portion 391 pressed by the first engagement piece 385 of the regeneration slider 38 and is rotated clockwise in the figure. At this time, as shown in FIG. 9, the switching drive lever 23 that engages with the large-diameter gear 71 of the right reel shaft 17 has its protrusion 732 pressed by the suppressing part 393 of the first switching slider 39. Rotated. Therefore, the large-diameter gear 71 is slid 9 in the axial direction with respect to the rotary shaft 171 by the driving portion 731 of the switching drive lever 23, and the meshing with the gear 74 is released. On the other hand, since the second Kirimata slider 40 has its bent engagement portion 401 disengaged with the second engagement piece 386 of the reproduction slider 38, the large-diameter gear 58 of the left reel shaft 18 The left reel shaft 18 is maintained in mesh with the gear 62 having a small diameter, and the left reel shaft 18 is allowed to rotate at a constant speed.

Also, as shown in FIG. 4 again, the main chassis 26
A rotation shaft 268 is installed approximately in the center of the slider, and the lock slider 16 and the switch slider 77 are rotatably supported on the rotation shaft 268. Among these, the lock slider 76 is connected to the first drive section 223 of the front self-regeneration operator 22, the right and left reel shafts 17°18
wJl to fifth wJl, which can be respectively engaged with the engaging parts 673, 543 of the stop operator 210, the drive part (not shown), and the retaining part 781 formed on the number of times limit slider 28, which will be described later.
The retaining portions 76 to 765 are formed to widen around the pivot shaft 269. Further, the switch slider 77 has substantially the same shape as the lock slider 76 and is provided overlapping the lock slider 76, and includes the first driving section 223 of the playback operator 22, the right and left reel shafts 17, and the like.
．． 18 engaging portions 673, 543, first to fifth engaging portions 771 to 775 that can be engaged with the driving portion of the stop operator 21 and the retaining portion 281 of the number limit slider 78 are formed. . Furthermore, a sixth retainer 5776 is formed at the tip of the third retainer 773 of the switch slider 77 and engages with a switch (not shown) for supplying power to the motor 29. When the switch slider 77 is rotated counterclockwise in FIG. 4, the switch is turned on by the sixth retaining portion, and the motor 29 is rotationally driven. Further, the lock slider 76 and the switch slider 77 include
Projecting locking pieces 766 and 777 are formed. and,
By engaging springs 79 and 80 between these protruding locking pieces 766 and 777 and predetermined positions of the main chassis 26, the lock slider 76 and switch slider 77 are rotated clockwise in FIG. 4, respectively. energized.

Therefore, the first to fifth engaging parts 761 to 765 and the first to fifth engaging parts 771 to 775 of the lock slider 26 and switch slider 77 are connected to the first driving part 223 of the regeneration operator 22, respectively. , right and left reel axes 17
．． 18 engaging parts 673, 543, the driving part of the stop operator 21, and the retaining part 781 of the number limit slider 28.

In the above configuration, when the playback operator 22 is operated to play back a tape, the head chassis 35 is moved as described above, the recording/playback head 31 is brought into contact with the tape, and the right and left pinch rollers 33 are moved. .34 selectively tape right and left capstan 27.28
is pressed against. During this gap, the lock slider 76 and the switch slider 77 are pressed by their first engaging portions 761 and 771 by the first drive portion 223 of the regeneration operator 22, and are moved to the first position against the biasing force of the springs 79 and 80. It is rotated counterclockwise in Figure 4. Then, when the playback operator 22 is in the pressing operation position, the first retaining portion 761 of the lock slider 76 faces the bottom surface portion of the first drive portion 223. Therefore, the lock slider 76 is rotated clockwise in FIG. , the playback operator 22 is operated.

At this time, the first retaining portion 771 of the switch slider 77 is maintained in a pressed state by the first driving portion 223 of the playback operator 22, so the switch is turned on and the motor 29 is turned on as described above. is rotated clockwise in FIG.

37- The right and left flywheels 46.4'1 are then rotationally driven counterclockwise and clockwise, respectively. At this time, when the reproduction slider 38 is slid in the direction of the arrow E, the second switching slider 40 is rotated counterclockwise in FIG. 4 as described above. Therefore, the rotational force of the left flywheel 470 is applied to the gear 51, the large diameter gear and the small diameter gear 6.
1.62, gear 74, large diameter gear 71 of right reel shaft 17
The signal is then transmitted at a constant speed to the reel cartridge f68 via the rotating shaft 171, and the tape is played back in the forward direction.

Further, when the reproduction slider 38 is slid in the direction of the arrow F, the first switching slider 39 is rotated clockwise in FIG. 4 as described above. Therefore, the rotational force of the left flywheel 42 is applied to the gear 51, the large diameter gear and the small diameter gear 61.
．． 62, large diameter gear 58 of left reel shaft 18 and rotating shaft 1
The signal is transmitted at a constant speed to the reel cap 55 via the tape 81, and the tape is played back in the reverse direction.

Next, it is assumed that the tape fast-forwarding is stopped and the fast-forwarding operator 19 is depressed. Then, since the reel cap 68 of the right reel shaft 17 is pressed, the locking member 67 is slid in the axial direction against the biasing force of the spring 69. The locking member 67 is moved in the axial direction until its lower end comes into contact with the flange 661 of the bearing member 66. In this state, the engaging portion 673 of the locking member 67 engages the switch slider 27.
The second engaging portion 772 of the lock member 67 is pressed, the switch slider 77 is rotated counterclockwise in FIG. is engaged with. For this reason, the motor 29
The right reel shaft 17 is opened at the operating position at the same time as the switch for supplying power to the reel is turned on. At this time, as the right reel shaft 17 is pressed,
By sliding the rotating shaft 171 in the axial direction,
The small diameter gear 7o fitted on the rotating shaft 171 is slid in the same direction as the large diameter gear 71. Therefore, the gear 7 with a larger diameter is disengaged from the gear 74, and the gear 70 with a smaller diameter is meshed with the gear 75. Further, as the right reel shaft 17 is pressed, the pressing portion 622 of the locking member 67 presses the retaining portion 402 of the second switching slider 4o as described above. The switching slider 40 is rotated counterclockwise in FIG.

Therefore, the second switching slider 4o rotates the switching drive lever 6o by pressing the protrusion 602 of the switching drive lever 6o that engages with the large-diameter gear 58 of the left reel shaft 18 with its suppressing portion 403. make it move. The large diameter gear 58 is slid in the axial direction with respect to the rotating shaft 181 by the drive portion 601 of the switching drive lever 6o, and the small diameter gear 6
The toothing with 2 is disengaged. Therefore, the rotational force of the left flywheel 47 is applied to the gear 5, the large diameter gear and the small diameter gear 61.
62, the gear 75, the small diameter gear 70 of the right reel shaft 17, and the rotary shaft 171 to transmit the signal to the reel carrier and roller 8 at high speed, thereby performing fast-forwarding of the tape.

It is also assumed that the rewind operator 20 is pressed to rewind the tape. Then, since the reel character f55 of the left reel shaft 18 is pressed, the locking member 54 is slid in the axial direction against the biasing force of the spring 56. The locking member 54 is moved in the axial direction until its lower end comes into contact with the flange 531 of the bearing member 53. In this state, the third retaining part 773 of the switch slider 77 is pressed by the engaging part 543 of the locking member 54, and the switch slider 77 is moved to the fourth position.
The lock slider 7 is rotated counterclockwise in the figure.
The third retaining portion 763 of No. 6 is connected to the engaging portion 54 of the locking member 54.
3. Therefore, the switch for supplying electric power to the motor 29 is turned on, and the left reel shaft 18 is moved to the operating position. At this time, as the left reel shaft 18 is pressed, the rotation shaft 181 is slid in the axial direction, so that the rotation shaft 181 is slid in the axial direction.
The small diameter gear 57 fitted on the gear 81 is slid in the same direction as the large diameter gear 41-wheel 58. Therefore, the large diameter gear 58 separates from the small diameter gear 62, and the small diameter gear 58 separates from the small diameter gear 62.
7 is meshed with a gear 61 having a large diameter. Further, as the left reel shaft 18 is suppressed, the pressing portion 542 of the locking member 54 presses the retaining portion 392 of the first switching slider 39 as described above, thereby causing the first The switching slider 39 is rotated clockwise in FIG. For this reason, this first switching slider 39 has a suppressing portion 39
3 presses the protrusion 732 of the switching drive lever 73 that engages with the large-diameter gear 71 of the right reel shaft 17 to rotate the switching drive lever 23. And this switching drive lever 7
The large-diameter gear 21 is slid in the axial direction with respect to the rotating shaft 171 by the drive unit 731 of No. 3, and is disengaged from the gear 74. Therefore, the rotational force of the left flywheel 47 is transmitted at high speed to the reel cap 55 via the gear 51, the large diameter and small diameter gears 61, 62, the small diameter gear 57 of the left reel shaft 18, and the rotating shaft 181. 42- Tape rewinding is performed.

Here, a case will be described in which the stop operator 21 is operated in the above-described playback, fast-forwarding, and rewinding states. That is, as described above, the stop operation element 21 is installed in the cassette holder 30 so as to be pressable, and its lower end can be engaged with the fourth engagement part 764 of the lock slider 76. The driving section is formed.

In the playback, fast forwarding and rewinding states, each control 2
2, 19 and 20, the first drive section 223 and the engagement section 673 of the lock member 67.54 are engaged by the first to third engagement sections 761 to 763 of the lock slider 76 at the operation position. It's being ticked. Therefore, when the stop operation element 21 is depressed, the lock slider 76 has its fourth retaining part 764 pressed by the driving part of the stop operation element 21, and is rotated counterclockwise in FIG. For this reason, the playback, fast forwarding and rewinding operators 22
．． 19 and 20 are respectively unlocked and put into a stopped state.

In this way, the tape running system is switched by the small and large diameter gears 70, 71 and 51. of the right and left reel shafts 17, 18.
58 is configured to slide approximately perpendicularly to the main chassis 26. Therefore, since each gear of the tape running drive system is supported in a position approximately parallel to the main chassis 26, the meshing relationship of each gear is stable, the transmission of rotational force is efficient, and the number of parts is reduced. This can promote downsizing.

By using the first and second switching sliders 39 and 40, which change the running system to fast-forward and rewind states, to switch the running system in the playback state, the number of parts is reduced and downsizing is achieved. This can be promoted.

A tape end detection mechanism for detecting when the tape reaches the end in the above-described playback state will now be described. That is, Fig. 4 and Fig. 17 (a), (b)
As shown in FIG. 2, one end of the friction lever 8 is provided on the lower end surface of the small diameter gear 62 via a well-known friction mechanism. The friction lever 81 is biased in the direction of rotation when the small diameter gear 62 is rotated. A long hole 81 is provided at the other end of the friction lever 81.
1 is formed in the elongated hole 811, and a pin 821 is provided protruding from the tip of one end of the detection/output lever 82 having an abbreviated shape.
is loosely fitted. The detection lever 82 is rotatably supported by a shaft 822 protruding from the main chassis 26 at its substantially central portion, and the inner portion of the base at one end thereof is formed into the large-diameter gear 61. cam part 61
It is still attached to the side of the hole.

Further, a protrusion 8 is provided at the base of one end of the detection lever 82.
23 is formed, and this protrusion 823 can be engaged with a curved operating wall 612 formed on the flat surface of the large-diameter gear 61. Furthermore, the detection lever 82
First and second engaging portions 824 and 825 are formed at the other end. Of these, the first retaining portion 824 is capable of engaging with a 45-bending engaging portion 782 formed on the number-of-times limiting slider 78, which will be described later9, and the second retaining portion 825 will be described later. It can be engaged with a bent engagement portion 831 formed on the reverse drive lever 83.

That is, in the above-described tape playback state, the left flywheel 47 and the gear 51 are rotated clockwise in FIG.
is rotated counterclockwise in the figure. Therefore, the friction lever 81 is urged in the same direction by the rotational force of the small diameter gear 610, and the detection lever 82 is also urged in the same direction about the shaft 822. At this time, the detection lever 82 swings about the shaft 822 as the inner side of its base comes into sliding contact with the cam portion 611, so that a stable constant tape running state is maintained. For example, when the tape reaches the end in a tape constant speed running state in the forward direction, the rotation of the right reel shaft 170 is stopped.
The large diameter gear 71, the gear 74, and the small diameter gear 620.
Rotation is stopped. Because of this, a slippage occurs between the small diameter gear 62 and the large diameter gear 61. At this time, due to the rotation of the small diameter gear 62 being stopped, no biasing force is applied to the friction lever 81 and the detection lever 82. On the other hand, the large diameter gear 6
As the rotation continues, the cam portion 611 is also rotated. Therefore, as the cam portion 611 rotates, the detection lever 82 is rotated clockwise in FIG. 4 about the shaft 822 by the length of the maximum diameter of the cam portion 61 and stopped at that position. be done. Then, the large diameter gear 6
As the detection lever 82 rotates ten times, the protrusion 823 of the detection lever 82 comes into contact with the operating wall 612 of the large-diameter gear 61 and is pressed, so that the detection lever 82 is further rotated clockwise in FIG. 4. At this time, the detection lever 82 has its first and second engaging portions 824 and 825 connected to the number of times limiting slider 78 and the reverse drive lever 83, the details of which will be described later.
It operates.

In addition, even in the tape playback state in the reverse direction, the end of the tape is reliably detected in substantially the same manner as in the forward tape playback state described above, and the explanation thereof will be omitted here.Next, in the tape playback state, An auto-reverse mechanism that reverses the tape running direction in response to the tape end detection mechanism described above will be described. That is, as shown in FIG. 4 again, a gear 50 is formed coaxially and integrally with the right flywheel 46. The rotational force of the motor 29 is transmitted to the gear 50 together with the right flywheel 46 via a belt 49, and the right flywheel 46 is connected to the right flywheel 46.
7 in the counterclockwise direction in the figure. A shaft 84 is installed on the left side of the gear 500 of the main chassis 26 in the figure, and a reverse drive gear 84 is rotatably supported on this shaft 841 so as to be able to mesh with the gear 50. There is. As shown in FIG. 18(,), this gear 84 has a pair of notches 842 and 843 formed at predetermined positions facing each other and which do not mesh with the gear 50. Further, a substantially disc-shaped guide portion 8 is provided on one side of the gear 84.
44 is provided protrudingly, and this guide portion 844 has the above-mentioned cutout portion 8
Approximately V-shaped locking grooves 845 and 846 facing each other are formed corresponding to the grooves 42 and 843.

Furthermore, the locking groove 845 is provided on one side of the gear 84.
, 846, protruding in a substantially triangular shape.
7.848 is formed. A cam portion 85 is formed on the upper surface of the guide portion 844, with a portion having a flat portion 851 and the other portion being curved in the shape shown in the figure.
5 is inserted into a substantially rectangular through hole 386 formed in the middle portion of the reproduction slider 38. In the through hole 386 of the cam part 85, inclined bending pressing parts 387 and 388 are formed so as to be able to engage with the maximum diameter part of the cam part 85, facing each other on both sides in the figure.

Here, a guide pin 832 formed at one end of the reverse drive lever 83 is in contact with the guide portion 844 . The reverse drive lever 83 has an intermediate portion rotatably supported by the main chassis 26, and is biased clockwise in the figure by a not-shown spring 49-bring. Further, the reverse drive lever 83 has the bent engagement portion 825 that can be engaged with the second engagement portion 825 of the detection lever 82 at the other end. The reverse drive lever 83 is engaged with the manual reverse operator 24 at its other end, and is rotated counterclockwise in the figure in response to the operation of the manual reverse operator 24. being done.

That is, when the tape reaches its end in the tape playback state, the tape end detection mechanism detects this as described above and rotates the detection lever 82 clockwise in FIG. 4. Therefore, the second retaining portion 825 of the detection lever 82 is connected to the bending engagement portion 8 of the reverse drive lever 83.
31 to rotate the reverse drive lever 83 counterclockwise as shown in FIG. 18(a). At this time, this reverse drive lever 83 is
32 presses one side of the projection 847 of the gear 84, causing the gear 84 to rotate slightly clockwise in the figure. Therefore, this gear 84
As shown in FIG. 18(b), the right flywheel 27
It is rotated by being meshed with the gear 50 of. Therefore, as shown in FIG. 18(c), the reverse drive lever 83 is guided by the other projection 848 while its guide pin 832 is in sliding contact with the guide portion 844, as shown in FIG. 18(d). is locked in another locking groove 846. At this time, the cam portion 85 of the gear 84 is rotated in the same direction as the gear 840 rotates, and presses the bending engagement portion 387 or 388 of the regeneration slider 38 to move the regeneration slider 38 toward the arrow F. Or move it in the E direction. For this reason, the reproduction slider SS operates the first or second switching slider 39, 40 as described above to switch the state of tape running in the forward or reverse direction. Here, the rotation of the gear 84 is stopped when one of its notches 845 and 846 is opposed to the gear 50 of the right flywheel 27.

Further, the reverse drive lever 83 detects -? - the 19th without being operated only by S2
As shown in Figures (a) and (b), it is rotated counterclockwise in the figure in conjunction with the operation of the manual reverse operator 24, and the tape running direction is switched in substantially the same manner as described above. It is something that can be done.

Here, the manual reverse operator 24 is, for example, the first
As shown in FIG. 9(b), even if the pressing operation is continued, the guide pin 832 of the linage drive lever 83 is locked to the other protrusion 848 of the gear 84 once the tape running direction has been switched. This eliminates the need to continue with the next switching operation, which prevents erroneous operations and improves usability.

The reverse drive gear 84 is started by the pressing force of the reverse drive lever 83 and then rotated by a half turn by the gear 50 of the right flywheel 27. Therefore, there is no need to provide a starting member such as a spring to start the gear 84, which simplifies the construction of multiple configurations with fewer parts.

Further, since no biasing force is applied to the gear 84, its rotation is performed efficiently, so that the load on the motor 29 can be reduced, and power consumption can be reduced.

In addition, as shown in FIG. 20 (,), the main chassis 2
In step 6, S! performs minting when switching the tape running direction in correspondence with the reverse drive gear 84. - a switching switch 86 is installed. That is, this miniting switch 86 is installed corresponding to one side of the gear 84, and is electrically connected to a circuit section (not shown). And the above meeting sui,
The movable contact 861 of the switch 86 is connected to the projections 841, 8
48, the reverse drive lever 83 is provided corresponding to one located on the side facing the idle bin 832. Therefore, when the gear 84 starts rotating as described above, the minting switch 86 has its movable contact 861 pressed against, for example, the protrusion 848 for several seconds as shown in FIG. 20(b). This is turned on and muting is performed using a circuit. Here, the minting switch 86 is activated as shown in FIG.
) is in the off state as shown in FIG.

In this way, by configuring the communicating switch 86 to be turned on and off directly by the reverse drive gear 84, its operation can be ensured and its configuration can be simplified. be.

Further, the mute switch 86 is the gear 84.
Since the switch is turned on by being pressed by one of the protrusions 847 and 848 formed in the switch, the timing can be adjusted very easily.

Here, as shown in FIG. 4 again, the main chassis 2
6, a shaft 783 is implanted in the lower left part of the figure. On this shaft 783, as shown in FIG. Please refer to Figure 4 of 87. Further, at the other end of the number-limiting slide/78, there is provided a drive section 784 whose substantially central portion is rotatably supported. The bending engagement portion 782 is connected to the first engagement portion 8 of the detection lever 82 at one end of the drive portion 784.
24, and the engaging portion 781 is formed at the other end of the fifth lock slider 76.
It is formed so that it can be engaged with the engaging portion 765 of. Further, the number of times limit slider 78 is formed with an engaging portion 785 corresponding to the recording slider 44, the details of which will be described later.

Here, the number of times limit switch 87 is pressed so that it can slide freely in the direction of arrow F. When the number of times limit switch 87 is slid in the direction of arrow F, the number of times limit slider 78 is rotated clockwise in the figure as shown in FIG. The joint portion 781 is forced into a state in which it does not face the first retaining portion 824 of the detection lever 82 and the fifth retaining portion 265 of the lock slider 76 . Further, as shown in FIG. 22(a), when the number of times limiting switch 87 is slid in the direction of arrow E, the number of times limiting slide/78 is rotated counterclockwise in the figure, and its bent engagement portion 782 is rotated counterclockwise in the figure. The engaging portion 781 faces the first engaging portion 824 of the detection lever 82 and the fifth engaging portion 765 of the lock slider 76, and is in a lockable state.

That is, when the tape reaches the end in the tape playback state, the detection lever 82 is operated and rotated clockwise in the figure as described above.

At this time, for example, when the number of times limit switch 87 is slid in the direction of arrow F, as shown in FIG. The drive unit 78 is slightly engaged and pressed.
Rotate 4 slightly. However, the number of times limit slider 1
8, the lock slider 76 has an engaging portion 781 that does not face the fifth retaining portion 265 of the lock slider 76.
The playback operation element 22 and the first drive section 223 are not rotated in the direction of unlocking them. At this time, the detection lever 82 has its second retaining portion 825 connected to the bending engagement portion 8 of the reverse drive lever 83 as described above.
31 is pressed to switch the tape running direction.

Here, when the number of times limit switch 78 is slid in the direction of arrow F, the tape running direction is permanently switched when the tape reaches the end.

In addition, when the number of times limit switch 18 is slid in the direction of arrow E, the bent engagement portion 782 of the number of times limit slider 78 engages with the second engagement of the detection lever 82, as shown in FIG. 22(a). 824. Therefore, as the detection lever 820 rotates clockwise in the drawing, the number-of-numbers limit slider 28 is pressed by its bending member 57-joining portion 782 as shown in FIG. 22(b). 184 is rotated counterclockwise in the figure. Here, the engaging portion 781 of the driving portion 784
presses the fifth retaining portion 765 of the lock slider 76,
In order to rotate the lock slider 76 counterclockwise in the figure, the first drive section 223 of the playback operator 22 is unlocked and brought to a stopped state. At this time, the second retaining portion 825 of the detection lever 82 rotates the reverse drive lever 83 counterclockwise in the figure in the same manner as described above, so that the tape running direction is switched as described above. It is something.

In this way, by providing the tape end detection mechanism in the large diameter and small diameter gears 61.62 that selectively drive the right and left reel shafts 17.18 to rotate according to the tape running direction, the end detection mechanism can be easily detected. This is reliable, and the number of parts is reduced, which facilitates miniaturization.

In the reproduction state, when the tape is automatically stopped by the number limit slider 78, the tape running system 58- is configured to be reversed. Therefore, when the playback operator 22 is operated again, playback is performed from the state in which the mechanical section is inverted, which eliminates the trouble of replacing tape cassettes and simplifies the operation.

Next, the control mechanism of the recording system, which is omitted from FIG. 4 for convenience of illustration, will be explained. That is, in FIG. 23, numeral 44 is a recording slider that is slid as described above in conjunction with the pressing operation of the recording operator 23.

This recording slider 44 is slidably supported in the direction of arrow C9D by a shaft 442 implanted in the main chassis 26 and a shaft 841 on which the reverse drive gear 84 is supported. Further, at the bottom of the shaft 442 of the recording slider 44, there is a retaining portion 443 inclined in the direction of the arrow.
is formed, and the retaining portion 785 of the number limit slider 78 is engaged with this engaging portion 443.

Furthermore, a rotation shaft 445 is attached to the lower part of the shaft 841 of the recording slider 44.
One end of the recording control member 88 is rotatably supported by the recording control member 88 . A spring 89 is engaged between the recording control member 88 and the recording slider 44 so as to apply a biasing force to the recording control member 88 in the counterclockwise direction in the figure. Further, the recording control member 88 has a protrusion 881 formed at the other end thereof, and the protrusion 881 is engaged with the notch engaging part 446 formed in the recording slider 44. Further, a pressing and holding portion 882 is formed in the middle portion of the recording control member 88, and this pressing engagement portion 882 is engaged with a protrusion 849 formed on the reverse drive gear 84. Here, the protrusion 849 is formed to correspond to the cam part 85 of the gear 84, and when the tape running system is running in the reverse direction, the recording slider 44
The recording control member 88 is engaged with the pressing engagement portion 882 of the recording control member 88 in conjunction with the recording control member 88 .

By the way, the playback and recording operator 22
．． 23, the recording slider 44 is slid in the direction of the arrow C in conjunction with the recording operation element 23 as described above, the circuit section is put into the recording state, and the erasing head 32 is brought into contact with the tape. On the other hand, the recording/reproducing head 31 is brought into contact with the tape in conjunction with the playback operator 22, and the right pinch roller 33 is always brought into pressure contact with the right capstan 27 through the tape, thereby performing one-way recording.

That is, when the traveling system is running in the reverse direction as shown in FIG. 23, when both the playback and recording controls 22 and 23 are operated to perform recording as shown in FIG. 24 (&), the recording slider 44 is is slid in the direction of arrow C. At this time, the recording control member 88 is slid in the same direction, and its pressing engagement portion 882 is engaged with the protrusion 849 of the gear 84, so that the protrusion 881 is moved against the recording slider 4.
It is in a state where it is ablated from the notch engaging portion 446 of No. 4. For this reason, the gear 84 is rotated slightly clockwise in the drawing by the urging force of the spring 89 pressing the gear 84 against the pressing engagement portion 88261- of the recording control member 88.

Therefore, this gear 84 is
As shown in (d), the right capstan 27 is meshed with the gear 50 and rotated half a rotation, thereby putting the running system in the forward running state as described above.

On the other hand, when the recording slider 44 slides in the direction of the arrow C mentioned above, its retaining portion 443 is connected to the number of times limit slider 78.
Press the engaging portion 75 and rotate it counterclockwise in the figure.

Therefore, as described above, the number of times limiting slider 78 has its bending engaging portion 782 and engaging portion 781 connected to the first retaining portion 824 of the detection lever 82, the mouth, and the cross slider 7.
It is opposed to the fifth retaining part 765 of No. 6.

For this reason, as described above, when the tape reaches the end, the detection recorder 82 is rotated to operate the number limit slider 78, and the recording state is automatically stopped.

Further, when the recording slider 44 is slid in the direction of arrow C as described above while the tape running system is running in the forward direction, the recording control member 62-88 has its pressing engagement portion 882 pressed against the protrusion of the gear 84. Part 84
Since it is not opposed to 9, it is not engaged as described above. Therefore, the recording control member 88 is slid in the direction of arrow C together with the recording slider 44 with its protrusion 88 engaged with the notch engaging portion 446 of the recording slider 44. Here, the gear 84 is maintained in a stable state without being subjected to the biasing force of the spring 89, and recording is performed here.

In this way, playback and recording operator 2
When 2.23 is operated together, for example, when the tape running system is running in the reverse direction, the reverse drive gear 8
4 is operated reliably, the vehicle is switched to the forward running state, and one-way recording is performed. Therefore, erroneous recording can be reliably prevented.
Moreover, the usability is improved.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide an extremely good cassette tape recorder device that has a simple structure, can be downsized, and has good operability.

[Brief explanation of drawings]

FIG. 1(,) is a plan view showing a cassette tape recorder device according to an embodiment of the present invention, and FIG.
, ) side view, Figure 2 is a perspective view showing the external appearance of the mechanism part, head part, and cassette holder in Figure 1 (, ), and Figure 3 is a side view of the mechanism part, head part, and cassette holder in Figure 1 (, ).
Fig. 4 is a plan view showing the structure of the mechanism shown in Fig. 1 (,), and Fig. 5 shows the mounting structure of the playback and recording controls. 6 is a perspective view showing the operating state of FIG. 5; FIG. 7 is a sectional view showing a part of FIG. 5; FIG. 8 is a sectional view showing a part of FIG. 6; The figure is a cross-sectional view showing the mechanism section in Figure 1(a) running at a constant speed in the reverse direction, and Figures 10 and 11 are respectively
12 and 13 are a cross-sectional view and a plan view showing the mechanism part in the fast-forwarding state shown in FIG. 1 (-) and a plan view showing the rewinding state, respectively. Figure, 1st
Figures 4 and 15 are a plan view and a sectional view, respectively, showing the mechanism section in Figure 1 (&) running at a constant speed in the forward direction, and Figure 16 is a constant speed in the reverse direction of the mechanism unit in Figure 1 (&). The plan view showing the running condition, Fig. 17 (a) and a (b) are respectively Fig. 1 (,)
A plan view and a cross-sectional view showing the tape end detection mechanism of the 18th
Figures (a) to (d) are plan views showing the operation of the drive system of the reverse mechanism in Figure 1 (,), Figure 19 (a),
(b) is an operation explanatory diagram showing the relationship between the manual reverse operator and the reverse drive lever in FIG. 1 (,), respectively;
Figures 20(,), (b), and (c) are plan views showing the minting operation of Figure 1(,), respectively.
Figures (a) and (b) are plan views showing the operation of the mechanism section in Figure 1 (,) in the reverse state, and Figure 22 (), respectively.
a) and (b) are respectively plan views showing the operation of the mechanism section in FIG. 1 (,) in an automatic stop state, and FIG. A plan view showing,
24(,) to (d) are plan views showing the operation of FIG. 23, respectively. 11...carnet, 12...cassette lid, 13
...Tape cassette, 14...Storage section, 15...
Mechanism storage section, 16--Head section, 17--Right reel 6
5-axis, 18...left reel axis, 19...fast-forward operator,
20... Rewind operator, 21... Stop operator, 22
...Playback control, 23...Recording control, 24...
Manual reverse operator, 25...window section, 26...
Main chassis, 27... Right cag stan, 28...
・Left capstan, 29...Motor, 30...Cassette holder, 31...Recording/reproduction head, 32...Erasing head, 33...Right pinch roller, 34...Left pinch roller, 35 ... to doshishi, 36... right pinch lever, 362... drive section, 37... left pinch lever, 373... drive section, 38... playback slider, 3
9... First switching slider, 40... Second switching slider, 4... Playback drive member, 42... Bearing member, 43... Recording drive member, 44... Recording slider. 〆、
45...Pulley, 46...Right flywheel, 47
...Left flywheel, 48...Middle pulley, 49
...pe/l/), 50...gear, 5 no...gear,
53...Bearing member, 54...Lock member, 55...
・Reel cag, 56...Spring, 57...
Small diameter gear, 58...Large diameter gear, 59...Spring, 60...Switching drive 66-dynamic lever, 6th gear...Large diameter gear, 62...Small diameter tooth Wheel, 63...Friction member, 64...Stopper, 65...
・Spring, 66... Bearing member, 67... Lock member, 68... Reel cap, 69... Spring, 70... Small diameter gear, 71... Large diameter gear, 7
2...Spring, 73...Switching drive lever, 74
... Gear, 75 ... Gear, 76 ... Lock slider, 77 ... Switch slider, 78 ... Number of times limit slider, 79 ... Spring, 80 ... Spring, 81 ... Friction Lever, 82...Detection lever, 83
... Reverse drive lever, 84... Gear, 85'.
・-Cam part, 86... Muting switch, 87
... Number of times limit switch, 88... Recording control member, 8
9...Spring. Applicant's agent Patent attorney Suzue Takehiko - Ishi 7 - Figure 1 (a) ≦ (-1 Figure 17 (a) (b) (b) 43 Figure 24 (b) (C) 8th m. Figure 24

Claims (1)

[Claims] In a cassette recorder device equipped with an auto-reverse mechanism that has a pair of capstans and can freely run in the forward and reverse directions, each intermediate portion is rotatably supported in correspondence with both ends of the base of the cassette holder. a pinch roller is rotatably supported at one end facing the pair of capstans, and has a retaining portion at each other end to apply a biasing force in a direction in which the pinch roller is always in contact with the pair of capstans. a pair of pinch levers, and a front d bio-
a control member that controls one of the pair of pinch rollers to be in contact with the pair of six cassants and the other to be in a separated state in conjunction with a triverse mechanism, the pair of control member and the pair of pinch rollers A cassette chip recorder device characterized in that the engaging positions of the + and - engaging portions are set at the rear of each rotation axis of the pair of pinch levers when viewed from the cassette half.