JP3057526B2 - Tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel tape recorder. More specifically, when the tape reaches the end during recording or reproduction while the tape is traveling in one direction, that is, in the forward direction, the tape traveling direction is reversed to continue the recording or reproduction, and the tape is moved in the one direction. Regarding a tape recorder (recording / reproducing machine) which stops the tape running when it reaches the end of the tape during recording or playback while running in the reverse direction, that is, in the reverse direction, the reverse error is prevented by a simple erroneous erasure prevention mechanism. It is an object of the present invention to provide a new tape recorder which can perform recording while running the tape in the reverse direction when there is an erroneous erasure prevention piece on the side.

[0002]

2. Description of the Related Art In a conventional tape recorder capable of auto-reverse recording, only a forward side erroneous erasure preventing piece (claw) is confirmed, and then forward recording is started. It was determined whether the recording should be reversed and the recording should be continued as it is (when there is a reverse side erroneous erasure prevention piece) or shut off (when there is no reverse side erroneous erasure prevention piece).

[0003]

However, in the above-described conventional tape recorder, the association between the mechanism for detecting the tape end and the mechanism for detecting the erroneous erasure prevention piece becomes extremely complicated, From the standpoint of, if you were convinced that double-sided recording was possible,
It is very inconvenient to be notified on the way that recording on the reverse side is not possible.

[0004]

According to the present invention, there is provided a tape recorder in which a tape cassette is mounted.
Mounting part and compatible with forward traveling and reverse traveling
Detecting member which is provided corresponding to each of the two erroneous erasure prevention pieces of the tape cassette to be moved and which is moved between a recording allowable position when the erasure prevention piece is present and a recording prevention position when the erasure prevention piece is not provided A recording lever which is provided slidably and is moved in one direction to form a recording mode; and a recording lever which is slidably provided and is moved in one direction to make a tape.
Forward mode and other directions
To move the tape in reverse.
A direction lever for forming a verse mode ;
One detecting member is connected to each detecting member and the corresponding detecting member is recorded.
When in the allowable position, set the recording mode of the recording lever.
Moved to the permissible recording allowable position and is at the recording stop position
Is the recording prevention position that prevents the formation of the recording mode of the recording lever.
Through interpolated direction lever between the two recording permission lever to move location, the direction lever and the detecting member
The forward mode when the
Detection unit that detects the presence or absence of an erasure prevention piece corresponding to the
A state mimic mechanism for forcibly moving the material to the recording allowable position, and one of the two erroneous erasure prevention pieces of the tape cassette is provided.
At one time, the one erroneous erasure prevention piece corresponds to reverse running.
The tape cassette is inserted into the
Depending on whether it is attached or not,
This enables recording in the running direction of the tape cassette .

[0005]

Therefore, according to the tape recorder of the present invention, recording is not possible if there are no erroneous erasure prevention pieces, but if there is any erroneous erasure prevention piece, the erroneous erasure prevention piece is connected to the reverse side. If you install a tape cassette so that
Reverse recording can be performed. Moreover, since the user can recognize this in advance, he or she is not in a panic when notified that only one-sided recording can be performed on the way.

In addition, only a state imitation mechanism needs to be added, and the mechanism does not become complicated.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a tape recorder according to the present invention.

In the drawing, reference numeral 1 denotes a tape recorder to which the present invention is applied, 2 denotes a housing thereof, and 3 denotes a lid for opening and closing a cassette mounting / closing opening 4 formed on the upper surface of the housing 2. When the tape cassette 6 is opened as shown in FIG. 1, the upper surface of the cassette mounting concave portion 5 is opened through the cassette mounting opening 4 so that the tape cassette 6 can be attached to and detached from the cassette mounting concave portion 5.

Reference numeral 7 denotes a chassis disposed in the housing 2, and a portion surrounded by the housing 2 on the upper side of the chassis 7 is a cassette mounting recess 5.

In the cassette mounting recess 5, two reel bases 8, 8 'are rotatably supported by the chassis 7 while being separated from each other in the left and right direction, and a reel base gear integrated with these reel bases 8, 8'. 9, 9 ′ are located below the chassis 7. Note that the reel base gears 9 and 9 'are large gears 9a,
9'a and the small gears 9b and 9'b are integrally formed.

Reference numeral 10 denotes a motor fixed to a lower left position of the chassis 7, and a pulley 11 is fixed to a rotating shaft 10a of the motor 10.

Reference numeral 12 denotes a pulley rotatably supported substantially at the center on the front side of the upper surface of the chassis 7, and a small drive gear 13 is integrally formed at the center of the lower surface of the pulley 12. The pulley 12 and the rotating shaft 10 of the motor 10
An endless belt 14 is stretched over the pulley 11 fixed to a. Therefore, when the motor 10 rotates, the pulley 12 rotates.

Reference numeral 15 denotes a left and right long FR slider.
The lower surface of the chassis 7 is supported slidably in the left-right direction at the center in the front-rear direction.

An intermediate gear 16 is rotatably supported below the FR slider 15 and is always meshed with the drive gear 13.

Reference numeral 17 denotes a limiter gear, which is suspended from the FR slider 15 above the intermediate gear 16 and is rotatably supported by a support shaft 18 on which the intermediate gear 16 is supported.

The intermediate gear 16 and the limiter gear 17
And a torque limiter 19 is interposed therebetween. The torque limiter 19 includes a friction plate 20 made of a material having a large coefficient of friction, for example, felt, and a pressing spring 21 for pressing the intermediate gear 16 to the limiter gear 17 via the friction plate 20.

The pressing spring 21 is formed of a leaf spring material.
A plurality of L-shaped arms 21b, 21b,... Are formed from a circular center plate 21a.
.. Are protruded so as to extend in the circumferential direction, and each of the arms 21b, 21b,... Is slightly bent so that the tip thereof is displaced upward. Such a holding spring 21
The center of the center plate 21a is attached to the lower end of the support shaft 18, and the arms 21b, 21
The tip of b,... resiliently presses the lower surface of the intermediate gear 16, thereby urging the intermediate gear 16 to move upward. To be pressed against the limiter gear 17.

Therefore, when the intermediate gear 16 rotates, the limiter gear 17 also rotates integrally with the intermediate gear 16. However, when a large load is applied to the limiter gear 17, slippage occurs between the friction plate 20 and the limiter gear 17.

When the FR slider 15 moves to the left, the intermediate gear 16 also moves to the left, and the reel gear 8 'on the take-up side (hereinafter referred to as "T-side reel machine"). The small gear 9'b of the reel base gear 9 '(hereinafter referred to as "T-side reel base gear") meshes with the T-side reel base 8' to rotate in the tape winding direction at high speed. Also,
When the FR slider 15 moves to the right, the intermediate gear 16 also moves to the right, and the reel stand gear 9 (hereinafter, referred to as “S-side reel stand”) of the supply-side reel stand 8 (hereinafter, referred to as “S-side reel stand”). The S-side reel base 8 is rotated at a high speed in the tape winding direction by engaging with the small gear 9b of the "S-side reel base gear".

Reference numeral 22 denotes a take-up arm rotatably supported substantially at the center of the lower surface of the chassis 7 in the left-right direction, and is made of a leaf spring material.

Reference numeral 23 denotes a gear supporting portion of the take-up arm 22 having a plate shape elongated in the left-right direction.
A portion near the center in the left-right direction is rotatably supported by a support shaft 24 suspended from the chassis 7. Play gears 25 and 25 'are rotatably supported below the left and right ends of the gear support 23.

Small protruding portions 23a and 23a 'protrude from the rear edge of the gear supporting portion 23 at positions near the left and right ends.

Reference numeral 26 denotes a relay gear rotatably supported by the support shaft 24 below the take-up arm 22.
The relay gear 26 is always meshed with the limiter gear 17 and the play gears 25 and 25 '.

Reference numeral 27 denotes a regulated portion projecting rearward from the center of the rear edge of the gear support 23 in the left-right direction.

Reference numeral 28 denotes a regulating portion projecting forward from the center of the front edge of the gear supporting portion 23 in the left-right direction.
Protrusions 29, 2 that protrude left and right at the left and right ends of the front end.
9 'is formed.

A portion 28a near the front end of the regulating portion 28
Is formed in a large elliptical shape, and an elliptical insertion hole 30 is formed in substantially the entire portion of the portion 28a, and the support shaft 1 on which the intermediate gear 16 and the limiter gear 17 are supported.
8 is inserted through this insertion hole 30, whereby
The sliding of the FR slider 15 in the left-right direction and the rotation of the take-up arm 22 are possible.

Reference numerals 31 and 31 'denote pressed arms protruding forward from positions respectively separated left and right from a portion of the front edge of the gear support portion 23 from which the restricting portion 28 protrudes. It ends on the side of the front end of the portion 28 and slightly behind the front end of the regulating portion 28.

Part 3 near the base end of pressed arms 31, 31 '
2, 32 'are spring-shaped portions bent in an "S" shape, and a portion in front of the spring-shaped portions 32, 32' is a regulating portion 28.
Are located along the side edge of the portion 28a near the front end thereof at a substantially constant interval, and the side edges 33a, 33 'of the front ends 33, 33' on the side facing the front end of the regulating portion 28. a
Is an inclined edge that becomes farther from the regulating portion 28 toward the front end.

Reference numeral 34 denotes a regulating slider slidably supported in the left-right direction at a position along the rear edge of the lower surface of the chassis 7, and presses a position of the front edge slightly shifted left and right from the center. Portions 35 and 35 'are protruded. And
At the center of the front edge of the pressing portions 35, 35 ', notches 36, 36' opened in a "V" shape are formed.

When the regulating slider 34 is in the center of its movement range, that is, in the neutral position, when the take-up arm 22 is tilted, its protrusion 23a or 2
3a 'enters the notch 36 or 36' formed in the pressing portion 35, 35 'of the regulating slider 34, whereby
The take-up arm 22 has its play gear 25 or 25
Can rotate to a position where it engages with the large gear 9a or 9'a of the reel base 8 or 8 '.

Then, the take-up arm 22 is tilted, and the play gear 25 or 25 'is moved to the reel base 8 or 8'.
Is engaged with the large gear 9a or 9'a in the play mode in which recording or reproduction is performed, in which the magnetic tape runs at a constant speed and engages with the T-side reel base 8 'to rotate. T-side tape reel (in normal play mode) or S
The tape is wound on an S-side tape reel engaged with the side reel base 8 (in the reverse play mode).

Then, the regulation slider 34 moves to the left (at the time of cue or fast-forward) or to the right (at the time of review or rewind) from the neutral position during high-speed running such as cue / review or fast-forward / rewind. When such movement is performed in the play state (at the time of cue / review), the protrusion 23a of the take-up arm 22 in which the play gear 25 or 25 'meshes with the large gear 9a or 9'a of the reel base 8 or 8'. Or 23a 'is the pressing portion 35 of the regulating slider 34.
Alternatively, a portion located beside the notch 36 or 36 'of 35' is pressed to rotate the take-up arm 22, thereby separating the play gear 25 or 25 'from the reel base gear 9a or 9'a.

Therefore, from the play state, the FR slider 1
5 moves to the left, the regulating slider 34 moves to the left from the neutral position via the interlocking mechanism described later to rotate the take-up arm 22, and the play gear 25 or 2
5 ′ is separated from the reel base gear 9a or 9′a, and the intermediate gear 16 meshes with the small gear 9′b of the T-side reel base 8 ′ due to the leftward movement of the FR slider 15 so that the T-side reel The table 8 'is rotated at a high speed in the tape winding direction, whereby a cue state appears.

Also, from the play state, the FR slider 15
Moves to the right, the regulating slider 34 moves to the right from the neutral position via the interlocking mechanism described later, and rotates the take-up arm 22 to rotate the play gear 25 or 25.
′ Is separated from the reel base gear 9a or 9′a, and
The rightward movement of the FR slider 15 causes the intermediate gear 16 to move.
Meshes with the small gear 9b of the S-side reel base 8 to rotate the S-side reel base 8 at a high speed in the tape winding direction, whereby the review state is displayed.

A switch operation pin 37 is vertically provided at the right end of the regulating slider 34.

Reference numerals 38 and 39 denote leaf switches for switching the rotation direction of the motor 10. The leaf switches 38 and 39 are fixed to the lower surface of the chassis 7, and the tips of the contact pieces 38a, 38a and 39a and 39a Located on top. That is, the distal ends of the contact pieces 38a, 38a are located slightly to the right of the switch operation pin 37 of the regulating slider 34 in the neutral position, and the distal ends of the contact pieces 39a, 39a are located in the neutral position. It is located slightly to the left of 37.

When the regulating slider 34 moves to the left, the switch operation pin 37 presses the tips of the contact pieces 39a, 39a of the left leaf switch 39 to bring them into contact with each other. Reference numeral 10 rotates in a direction for rotating the T-side reel base 8 'in the tape winding direction. When the regulation slider 34 moves to the right,
The switch operation pin 37 is connected to the right leaf switch 38.
Of the contact pieces 38a, 38a are brought into contact with each other, whereby the motor 10
Is rotated in the direction in which is rotated in the tape winding direction.

Reference numeral 40 denotes an interlocking arm having a substantially "L" shape when viewed from above, and a substantially middle portion in the front-rear direction is rotatably supported on the left end of the chassis 7. A rectangular engagement hole 41 is formed at a portion slightly forward of the rotation fulcrum 40a of the interlocking arm 40, and a connecting pin 42a protruding from a front end of a projecting piece 42 protruding forward from the left end of the FR slider 15 is provided. It is slidably engaged with the engagement hole 41.

An oblong connection hole 43 extending obliquely is formed at the rear end of the interlocking arm 40.

An FR lever 44 is slidably supported in the left-right direction on a front plate 45 provided at the front edge of the chassis 7. The front end 40b is rotatably engaged.

When the FR lever 44 is slid left and right, the interlocking arm 40 whose front end portion 40b is engaged with the engagement hole 44a of the FR lever 44 rotates. The FR slider 15 connected to 40 is moved right and left.

That is, when the FR lever 44 is moved to the left, the interlocking arm 40 rotates clockwise as viewed from above, and the engaging hole 41 in which the connecting pin 42a of the FR slider 15 is engaged. Is displaced leftward, so that the FR slider 15 is moved leftward. Also, FR lever 4
When 4 is moved rightward, the interlocking arm 40 rotates counterclockwise when viewed from above, and the engagement hole 41 in which the connection pin 42a of the FR slider 15 is engaged is displaced rightward. Therefore, the FR slider 15 is moved rightward.

Reference numeral 46 denotes a connection link rotatably supported at the middle of the rear portion of the chassis 7 near the left end thereof.
A connecting pin 46a protrudes from the rear end, and a connecting pin 46b also protrudes from the front end.

The connecting pin 46b on the front side of the connecting link 46 is slidably engaged with the connecting hole 43 at the rear end of the interlocking arm 40. The connecting pin 46a on the rear side of the connecting link 46 is The regulating slider 34 is slidably engaged with a connection hole 47 formed at the left end of the regulating slider 34 and extending substantially in the front-rear direction.

When the interlocking arm 40 rotates as described above, the regulating slider 34 is slid in the left-right direction via the connecting link 46.

When the FR lever 44 is moved leftward or rightward from the stop mode, a fast forward mode or a rewind mode appears.

That is, as described above, when the FR lever 44 is moved to the left, the FR slider 15 is moved to the left, and the intermediate gear 16 meshes with the T-side reel base gear 9'b, and When the regulating slider 34 is moved to the left via the interlocking arm 40 and the connecting link 46, the switch operation pin 37 contacts the contact pieces 39a, 39a of the leaf switch 39, and the motor 10 8 'is rotated in the tape winding direction. Thus, the fast-forward mode is formed.

When the FR lever 44 is moved to the right, the FR slider 15 is moved to the right, the intermediate gear 16 meshes with the S-side reel base gear 9b, and the interlocking arm 40, the connecting link When the regulating slider 34 is moved rightward through the switch 46, the switch operation pin 37 is connected to the contact pieces 38a, 38a of the leaf switch 38.
, And the motor 10 rotates so as to rotate the S-side reel base 8 in the tape winding direction. Thus, a rewind mode is formed.

Reference numeral 48 denotes a pinch roller lever having a substantially "L" shape when viewed from above, the bent portion of which is rotatably supported on the upper surface of the chassis 7 at a position near the front end of the left end, and is substantially horizontally moved. A pinch roller 49 is rotatably supported at the right end of the front arm 48a extending to the front.

The left half of the left arm 48b extending substantially in the front-rear direction of the pinch roller lever 48
Two holes 50 and 51 are formed. The right edges 50a, 51a of these holes 50, 51 are the pressed edges.

Numerals 52 and 53 are projecting pieces projecting forward and backward with respect to the pivot 40a of the interlocking arm 40, respectively.
The front protruding piece 52 is provided with the front hole 5 of the pinch roller lever 48.
0, and the rear projecting piece 53 is the pinch roller lever 4.
8 is located in the rear hole 51.

A capstan 54 is fixed at its lower end to the pulley 12 and the drive gear 13, and most of the capstan projects upward from the chassis 7.

When the interlocking arm 40 rotates in the counterclockwise direction, the front protruding piece 52 is moved to the pinch roller lever 4.
8, the pressed edge 50a on the front side is pressed rightward, whereby the pinch roller lever 48 is slightly rotated clockwise, and the pinch roller 49 is slightly separated from the capstan 54. At this time, the rear projecting piece 53 moves to the left, but it is made in the hole 51 and does not hinder the clockwise rotation of the pinch roller lever 48.

When the interlocking arm 40 rotates clockwise, the rear protruding piece 53 presses the pressed edge 51a on the rear side of the pinch roller lever 48 to the right.
The pinch roller lever 48 is slightly rotated clockwise, and the pinch roller 49 is slightly separated from the capstan 51. At this time, the front projection 52 moves to the left, but it is made in the hole 50 and the pinch roller lever 4
It does not hinder the clockwise rotation of 8.

Therefore, from the play mode, the FR lever 44
Is operated to display a cue or review state, the pinch roller 49 is separated from the capstan 51, and the magnetic tape can be run at high speed.

55 and 56 are “L” when viewed from above.
A control lever 55a, 56a extending in the front-rear direction at the center of the front half of the chassis 7 is symmetrically disposed so as to face each other at the center, and a front piece 55b extending in the left-right direction. Controllers 55a, 56a of 56b
The ends 55c and 56c far from the end are rotatably supported by the chassis 7. Then, the control unit 5 of the front pieces 55b, 56b
Connection holes 57, 57 slightly longer in the left-right direction are formed at positions closer to the 5a, 56a side.

Reference numeral 58 denotes a seesaw lever, whose center in the left-right direction is supported at the center of the front end of the chassis 7 so as to be movable and pivotable in the front-rear direction. A shaft 58a protrudes from the center of the seesaw lever 58, and a roller 59 is rotatably supported on the shaft 58a. Further, connecting pins 58b, 58b are protrudingly provided at both left and right end portions of the seesaw lever 58.

The connecting pin 5 of the seesaw lever 58
8b and 58b are connection holes 5 of the head levers 55 and 56.
7 and 57 are slidably engaged with each other.

Reference numeral 60 denotes a recording / reproducing lever, which is slidably supported on the front plate 45 of the chassis 7 in the left-right direction.
At the center of the rear surface of the recording / reproducing lever 60, cam pieces 61 and 62 are protruded at a slight interval.
Of the rear edges of the first and second rear edges, portions closer to each other are inclined edges 61a and 62a which are displaced forward as they approach each other, and the remaining portions are holding edges 61b extending in the left-right direction.
62b.

The recording / reproducing lever 60 can be moved between a neutral position, a reproduction position on the left side of the neutral position, and a recording position on the right side of the neutral position. Reference numeral 63 denotes a U-shaped centering spring whose base end is fixed to the chassis 7, and its two arm pieces are respectively resiliently contacted with left and right side edges of a projecting piece 60 a projecting from the recording / reproducing lever 60. As a result, the recording / reproducing lever 60 is urged to return to the neutral position.

The roller 59 of the seesaw lever 58 is located between the cam pieces 61 and 62 when the recording / reproducing lever 60 is in the middle position of the moving range, that is, in the neutral position.

When the recording / reproducing lever 60 is moved left (at the time of reproduction) or right (at the time of recording), the cam piece 61 is moved.
Or 62 of the seesaw lever 5
The roller 59 of the seesaw lever 58 is pushed rearward, whereby the portion of the seesaw lever 58 supporting the roller 59 is moved rearward. Then, the cam piece 61 or 62
When the holding edge 61b or 62b comes to a position corresponding to the roller 59, the roller 59 contacts the holding edge 61b or 62b, and the position is stabilized. This position is the projecting position of the seesaw lever 58.

When the recording / reproduction lever 60 is moved to the recording position, the motor 10 starts rotating, a recording circuit (not shown) operates, and a recording mode appears, and the recording / reproduction lever 60 is moved to the left. Then, the motor 10 starts to rotate, and a reproduction mode (eg, a reproduction circuit (not shown) operates) appears.

Reference numeral 64 denotes a direction lever, which is slidably supported in the left-right direction on the lower surface side of the front half of the chassis 7 substantially at the center in the left-right direction. Restriction pins 65 and 65 'are provided at positions near the left and right ends of the rear end of the direction lever 64.

Reference numeral 66 denotes a circuit board disposed below the chassis 7, and a slide switch 67 for switching the rotation direction of the motor 10 during constant-speed running is supported on the upper surface of the right end of the front end of the circuit board 66. In addition, a slide 67 a is projected from the front of the slide switch 67. The stop mode is when the slider 67a is located at the center of the movement range, and the tape running direction when the slider 67a is located at the right end of the movement range is the forward direction,
The running direction of the tape when located at the left end of the moving range is the reverse direction.

Reference numeral 68 denotes a protrusion which protrudes downward from a position near the right end of the direction lever 64.
A notch 68a is formed in the lower edge of the slide switch 67, and the slide 67a of the slide switch 67 is engaged with the notch 68a. Accordingly, the slider 67a of the slide switch 67 is moved according to the movement of the direction lever 64.

Accordingly, when the upper recording / reproducing lever 60 is moved from the neutral position to enter the reproduction mode or the recording mode with the direction lever 64 moved rightward, the magnetic tape (not shown) is engaged with the S-side reel base 8. When the reproduction mode or the recording mode is started in a forward direction in which the reel is unwound from the S reel and is wound on the T reel engaged with the T side reel base 8 ', and the direction lever 64 is moved to the left. Then, the magnetic tape is run in the reverse direction in which the magnetic tape is unwound from the T reel engaged with the T-side reel base 8 ′ and wound on the S reel engaged with the S-side reel base 8.

That is, when the direction lever 64 moves rightward, the right regulating pin 65 moves rightward from the control edge 55d of the control portion 55a of the right head lever 55,
On the other hand, the left regulating pin 65 ′ is connected to the left head lever 56.
Is moved to a position where it substantially contacts the control edge 56d of the controller 56a.

When the recording / reproducing lever 60 moves from this state to the reproducing position (left) or the recording position (right), the center of the seesaw lever 58 moves backward as described above. Accordingly, the connecting pins 5 located at both ends thereof
8b and 58b also try to move backward. However, the connecting pins 58b, 58b are
6, the control pin 65 'on the left side of the direction lever 64 is connected to the control edge 56d.
Connecting pin 58b engaged with the connecting hole 57 of the left head lever 56 which is in contact with
Cannot move rearward, so that the seesaw lever 58 operates to rotate counterclockwise about the left connecting pin 58b as a rotation axis, and the right connecting pin 58b
Moves greatly backwards. Accordingly, the right head lever 55 in which the right connection pin 58b and the connection hole 57 are engaged is rotated clockwise, and the rear end of the control unit 55a is moved substantially rearward.

When the rear end of the control portion 55a of the right head lever 55 moves rearward, the control edge 55d
Presses the inclined edge 33a of the front end 33 of the pressed arm 31 on the right side of the take-up arm 22 substantially rearward rightward, so that the take-up arm 22 is rotated counterclockwise, and the left play gear 25 'is rotated. Are engaged with the large gear 9'a of the T-side reel base 8 ', and when the motor 10 rotates from this state, the magnetic tape runs in the forward direction.

On the other hand, when the direction lever 64 moves to the left, the left regulating pin 65 'separates to the left from the control edge 56d of the control section 56a of the left head lever 56, while the right regulating pin 65 moves to the left. Right head lever 5
The control unit 55a moves to a position substantially in contact with the control edge 55d of the control unit 55a.

When the recording / reproducing lever 60 moves from this state to the reproducing position (left) or the recording position (right), the rearward movement of the control unit 55a of the right head lever 55 is performed by the direction lever. 64 right regulating pin 65
, The rearward movement of the right connecting pin 58b of the seesaw lever 58 is prevented, and the seesaw lever 58 operates to rotate clockwise about the right connecting pin 58b as a rotation axis. , Left connecting pin 5
8b largely moves backward. Therefore, the left head lever 56 in which the left connecting pin 58b and the connecting hole 57 are engaged is rotated counterclockwise to control the
The rear end of “a” moves substantially rearward.

When the rear end of the control portion 56a of the left head lever 56 moves rearward, the control edge 56d
Presses the inclined edge 33'a of the front end 33 'of the pressed arm 31' on the left side of the take-up arm 22 substantially rearward left, so that the take-up arm 22 is rotated clockwise, and When the play gear 25 is engaged with the large gear 9a of the S-side reel base 8 and the motor 10 rotates from this state, the magnetic tape runs in the reverse direction.

Magnetic heads 69 and 69 'are separately supported on the upper surfaces of the front pieces 55b and 56b of the head levers 55 and 56, and these magnetic heads 69 and 69' control the head levers 55 and 56. When the portions 55a and 56a move rearward, they are moved to an operating position where they come into contact with a magnetic tape (not shown).

As described above, when the cue or review state appears, the take-up arm 22
Is slightly rotated in a direction in which the play gear 25 or 25 'is separated from the reel base gear 9a or 9'a, but the head lever 55 or 56 is such that the control unit 55a or 56a is moved rearward, Take-up arm 22
The front end 33 or 33 'of the pressed arm 31 or 31' cannot be moved by being hindered by the rear end of the control unit 55a or 56a of the head lever 55 or 53. The bending of the spring portion 32 or 32 'allows the take-up arm 22 to rotate as described above.

Then, since the magnetic head 69 or 69 'is kept at the operating position, the signal recorded on the magnetic tape can be read, whereby the cue or review state appears. .

Reference numeral 70 denotes a tension spring which is stretched between the direction lever 64 and the chassis 7, whereby the direction lever 64 is provided with a moving force toward the left, that is, toward the reverse position. It has been energized.

Reference numeral 71 denotes a direction lock member for locking the direction lever 64 to a position to which it is moved rightward, that is, a forward position.
A right front part 71a is rotatably supported at the right front part of the upper surface of the head.

The direction lock member 71 includes a long arm 72 protruding leftward from the front end of the base, a short arm 73 protruding leftward from the rear end of the base, and a right end of the base. And a pressed piece 74 protruding rearward from the body are integrally formed.

An engaging claw 72a projects from the left end of the front surface of the long arm piece 72.
b is a gently inclined surface that gradually displaces rearward as it goes to the left.

An engaging projection 73a is provided on the lower surface of the distal end of the short arm 73 so as to project therefrom.

Reference numeral 75 denotes a leaf spring member which is long in the front-rear direction.
The rear end is fixed to the chassis 7, and the front end of one of the forked elastic pieces 75 a is in elastic contact with the rear end of the pressed piece 74 of the direction lock member 71 from the right side. The direction lock member 71 is urged to rotate counterclockwise when viewed from above.

Notches 77, 78a and 78b are formed side by side at the upper edge of the rising portion 76 rising upward from the front edge of the right end of the direction lever 64.
Of these, 78a and 78b are engagement notches with which the engagement claws 72a of the direction lock member 71 are engaged.
Reference numeral 7 is for attaching a direction knob described later.

Reference numeral 79 denotes a direction knob, which is provided with a projection 79a projecting from the rear surface thereof. The projection 79a has a rear end formed through the insertion hole 2a formed in the front surface of the housing 2 so that the direction of the direction lever 64 is adjusted. The notch 77 is engaged.

Further, a projection 79c projects upward from the upper surface of the direction knob 79, and a locked projection 79d projects rearward from the upper end of the projection 79c.

When the direction of the direction lever 64 is moved to the forward position, the position of the engagement notch 78a on the left side thereof coincides with the position of the engagement claw 72a of the direction lock member 71.
The engaging pawl 72a is engaged with the engaging notch 78a by the rotational force urged to the engaging notch 78a. As a result, the direction lever 64 is locked at the forward position. Of course, if the leftward moving force is applied to the direction knob 79 more strongly, the engaging claw 72a is forcibly engaged with the engaging notch 78a.
Removed from

When the engaging claw 72a of the direction lock member 71 is disengaged from the engaging notch 78a, the direction lever 64 is moved leftward by the tensile force of the tension spring 70 and reaches the reverse position.

When the direction lever 64 reaches the reverse position, the engaging claw 7 of the direction lock member 71
2a is located in the notch 78b.

Reference numeral 80 denotes the direction lock member 71.
And a right end portion 80a is a mode lock plate rotatably supported coaxially with the direction lock member 71. A protrusion 80b is provided at the rear end of the left end, and a front end portion at the left end. A roller 81 is rotatably supported. A pressed portion 80c is formed at the right end.
When the other elastic piece 75b of the leaf spring member 75 is resiliently contacted to the pressed portion 80c of the mode lock plate 80 from the right side, a turning force in a counterclockwise direction when viewed from above is urged. Have been.

At the right end of the recording / reproducing lever 60, long engaging holes 82a, 82b are formed side by side, and when the recording / reproducing lever 60 comes to the recording position, the left engaging hole 82b is inserted into the engaging hole 82b. When the roller 81 of the lock plate 80 engages and the recording / reproducing lever 60 comes to the reproduction position, the roller 81 of the mode lock plate 80 engages with the right engaging hole 82a, and the recording / reproducing lever 60 at each position. Is click-stopped.

Reference numeral 83 denotes a knob lock member which is long in the left-right direction, is located above the mode lock plate 80, and has a right end rotatably supported coaxially with the direction lock member 71 and the mode lock plate 80. ing.

A controlled projection 83a projects forward from the left end of the knob lock member 83, and a locking piece 83b extends forward at a position slightly to the right of the controlled projection 83a. It is projected toward. And the lock piece 83b
Is located slightly higher than the controlled part 83a.

Further, a controlled pin 83c is suspended from a substantially middle portion in the left-right direction of the knob lock member 83, and the controlled pin 83c is connected to the two arm pieces 72, 73 of the direction lock member 71. Located between bases.
The knob lock member 83 is urged by a spring (not shown) to rotate counterclockwise as viewed from above.

At the upper edge of the right end of the recording / reproducing lever 60, a control piece 84 having a certain length on the left and right is projected upward, and the control piece 84 is controlled by the knob lock member 83. It is located at the same height as the projection 83a. The lock piece 83b is located above the upper edge of the control piece 84.

When the recording / reproducing lever 60 is at a position other than the recording position, the control piece 84 is set to the knob lock member 83.
Therefore, the lock piece 83b of the knob lock member 83 is located at a position retracted rearward from the movement trajectory of the locked protrusion 79d of the direction knob 79. Therefore, the knob lock member 83 is related to the movement of the direction knob 79,
In other words, there is no obstacle to the movement of the direction lever 64.

However, when the recording / reproducing lever 60 comes to the recording position, the left end of the control piece 84 has the knob lock member 83.
Comes to the right side of the controlled projection 83a, so that the knob lock member 83 rotates counterclockwise so that the controlled projection 83a projects forward from the left side of the control piece 84 to the locked position. As a result, the locking piece 83b is located on the left side of the locked projection 79d of the knob 79 of the direction lever 64 at the forward position or the locked projection of the knob 79 of the direction lever 64 at the reverse position. Moving to the right of 79d, this prevents the direction knob 79 from moving left or right.

This prevents the running direction of the tape from being manually changed during recording.

When the recording / reproducing lever 60 is moved to the left from the recording position, the left end of the control piece 84 is moved to the knob lock member 83.
Is pressed to rotate the knob lock member 83 to the unlock position where the lock piece 83b is out of the movement locus of the locked protrusion 79d of the direction knob 79. In this case, the controlled pin 83 c of the knob lock member 83 and the arm 7 on the rear side of the direction lock member 71.
There is a sufficient margin between the direction lock member 83 and the direction lock member 83. Therefore, the rotation of the knob lock member 83 in the clockwise direction does not cause the direction lock member 71 to rotate in the clockwise direction.

When the direction lock member 71 is rotated clockwise by a reverse mechanism or an automatic shut-off mechanism described later, the control pin 83c of the knob lock member 83 is moved by the base of the longer arm 72. It is pulled backward, whereby the knob lock member 83 is rotated clockwise, and the lock on the direction knob 79 is released.

Reference numeral 85 denotes a cam gear rotatably supported at a position near the front of the lower surface of the right end portion of the chassis 7, and has gear teeth 85a, 85a,. An annular cam surface 86 protrudes, and a protrusion 86a is formed on the inner peripheral surface of the cam surface 86. The cam gear 85 is rotated by transmitting the rotation of the drive gear 13 via gear trains 87a, 87b, 87c.

However, the cam gear 85 is always rotating while the motor 10 is rotating. That is, when the magnetic tape is running in the forward direction, the cam gear 8
5 is rotated counterclockwise, and the cam gear 85 is rotated clockwise when the magnetic tape is running in the reverse direction.

Reference numeral 88 denotes a support shaft which is provided vertically behind the right end of the chassis 7, and has a flange-shaped spring receiving portion 88a protruding outward at the lower end thereof.

Reference numeral 89 denotes a counter pulley, which is rotatably supported on the upper end of the support shaft 88, and is resiliently provided by a coil spring 90 contracted between its lower surface and a spring receiving portion 88a of the support shaft 88. The upward moving force is urged.

Reference numeral 91 denotes a counter pulley integrally formed on the lower surface of the relay gear 26. An endless timing belt 92 is bridged between the counter pulley 91 and the counter pulley 89.

While the magnetic tape (not shown) is running, the counter pulley 89 is being rotated. When the magnetic tape is running in the forward direction, the counter pulley 89 is rotated clockwise, and when the magnetic tape is running in the reverse direction, the counter pulley 89 is rotated counterclockwise. Will be.

When the magnetic tape has been completely unwound from the tape reel, the reel bases 8 and 8 'cannot rotate, so that slippage occurs between the intermediate gear 16 and the limiter gear 17 linked via the torque limiter 19. Since the resulting relay gear 26 stops its rotation, the counter pulley 89 also stops its rotation.

Numeral 93 denotes a plate-shaped friction arm which is long in the front-rear direction, and has a long hole 94 formed in the front-rear portion near the rear end thereof.
8 is inserted through the upper end of the chassis 7 so that the friction arm 93 can move substantially in the front-rear direction.
Supported by

Reference numeral 95 denotes a spring receiving projection which projects from the upper surface of the friction arm 93 to the rear of the elongated hole 94, and has a gentle arc shape whose central portion projects rearward.

Reference numeral 96 denotes a torsion spring whose base is supported by the chassis 7, and its distal end elastically contacts the spring receiving projection 95 of the friction arm 93 from the rear. Movement is energized.

The front end of the friction arm 93 is formed in a bifurcated shape, and teardrop-shaped projections 97, 97 'project from the lower surface of the tip of each arm when viewed from above and below. These projections 97, 97 'are formed in a direction in which the rear end is thin and the front end is thick. In addition, these projections 97, 97
′ Is located within a range surrounded by the cam surface 86 of the cam gear 85, and the projection 86a of the cam surface 86
′, And the projection 86 a is located on one side of the projection 97.
(Or 97 '), while the other protrusion 97' (or 97) is formed in such a positional relationship as to come into contact with or approach a portion of the cam surface 86 which is located on the opposite side of the projection 86a. I have.

Reference numeral 98 denotes a pressing pin projecting upward at a substantially central portion of the right side edge of the friction arm 93 in the front-rear direction.

Thus, while the magnetic tape is running, the friction arm 93 continues to swing left and right while being located at the front end of the moving range, and when the magnetic tape stops running, is moved backward.

For example, when the magnetic tape is running in the forward direction, the counter pulley 89 is rotating in the clockwise direction. Receives rotational power in the direction of rotation. Therefore, the left projection 97 ′ is kept in contact with the portion of the cam surface 86 of the cam gear 85 located on the left. Further, since the cam gear 85 is rotated in the counterclockwise direction, when the projection 86a comes to the position of the projection 97 ', it comes into contact with its spire-shaped rear end, and presses the projection 97' to the right. , The friction arm 93 is slightly rotated in the counterclockwise direction. However, when the projection 86 a is separated from the projection 97 ′, the clockwise turning force urged by the counter pulley 89 immediately rotates the friction arm 93 in the clockwise direction. And comes into contact with a portion of the cam surface 86 other than the protrusion 86a. Thus, the friction arm 93 swings right and left while the magnetic tape is running.

When the magnetic tape stops, the friction arm 93 stops receiving clockwise turning power. Therefore, in this state, the projection 86a of the cam gear 85
Comes to the projection 97 ′ on the left side of the friction arm 93 and pushes the projection 97 ′ rightward, the friction arm 93 remains in a state where the projection 97 on the right side is in contact with the cam surface 86, that is, the projection 97 ′ The front is a projection 86a
Maintain the state of being located on the movement trajectory of. When the projection 86a of the cam gear 85 comes there, this time the substantially flat front surface of the projection 97 faces the projection 86a.
The front surface engages with the projection 86a and moves slightly rearward to the left as the cam gear 85 rotates counterclockwise,
When the projection 86a comes to the right of the projection 97, the projection 8
6a and the front surface of the projection 97 are disengaged, and the moving force of the torsion spring 96 causes the friction arm 93 to move.
Is moved forward.

Next, when the magnetic tape is running in the reverse direction, the counter pulley 89 is rotating in the counterclockwise direction.
3 receives the turning power in the counterclockwise direction. Therefore, the right projection 97 is kept in contact with the right portion of the cam surface 86 of the cam gear 85. Further, since the cam gear 85 is rotated clockwise, the projection 8
When the projection 6a comes to the position of the projection 97, it comes into contact with its spire-shaped rear end and presses the projection 97 to the left, whereby the friction arm 93 is slightly rotated clockwise. When the is separated from the projection 97, it is immediately returned in the counterclockwise direction by the counterclockwise rotating force urged by the counter pulley 89, and comes into contact with a portion other than the projection 86 a of the cam surface 86. Thus, while the magnetic tape is running, the friction arms 93
Is swinging left and right.

Then, when the magnetic tape stops, the friction arm 93 does not receive the turning power in the counterclockwise direction. Therefore, in this state, the projection 86 of the cam gear 85
When a comes to the projection 97 on the right side of the friction arm 93 and pushes the projection 97 to the left, the friction arm 93 keeps its left projection 97 ′ in contact with the cam surface 86, that is, the projection 97 ′. The front of the protrusion 86
The state in which it is located on the movement locus of a is maintained. When the projection 86a of the cam gear 85 comes in, the substantially flat front surface of the projection 97 'is opposed to the projection 86a, so that the front surface engages with the projection 86a to rotate the cam gear 85 clockwise. When the projection 86a moves to the left side of the projection 97, the engagement between the projection 86a and the front surface of the projection 97 is released. Thereby, the friction arm 93 is moved forward.

Reference numeral 99 denotes a transmission slider supported at the right end of the chassis 7 so as to be movable in the front-rear direction.
And a moving force toward the front is urged by a coil spring 100 stretched between them.

The front end 99a of the transmission slider 99 projects to the left, and the front end 99a has a pull arm 10a.
1 is rotatably supported within a certain angle range. At the front end of the pulling arm 101, a pulling piece 101a is raised upward. And the pulling arm 101
The tension piece 101a is the projection 80 of the mode lock plate 80.
b, and is rotatable between an auto-shut-off preparation position located on the front side of b and an auto-reverse preparation position located on the front side of the engagement projection 73a of the direction lock member 71, as viewed from above by spring means (not shown). The clockwise rotation is energized.

Reference numeral 102 denotes a regulating piece projecting from a rear edge of the direction lever 64 near the right end. When the direction lever 64 is at a position other than the forward position, the regulating piece 102 is Located to the left, which allows the pull arm 1
01 is located at the auto shut-off preparation position, and when the direction lever 64 moves to the forward position,
The restricting piece 102 presses the pulling arm 101 rightward, whereby the pulling arm 101 is rotated counterclockwise to move to the auto-reverse preparation position.

Reference numeral 103 denotes a pressed projection protruding leftward and forward from a position closer to the rear end than the center of the left edge of the transmission slider 99, and on the movement locus of the pressing pin 98 of the friction arm 93, ie, When the transmission slider 99 is located at the front end of the movement range, the transmission slider 99 is located immediately behind the pressing pin 98 of the friction arm 93 also located at the front end of the movement range.

The automatic reverse or automatic shut-off at the tape end is performed as follows.

When the magnetic tape is running in the forward direction, the tape end, that is, when the magnetic tape is completely unwound from the supply-side tape reel, the play gear 25 meshed with the T-side reel base gear 9'a. ′ Is stopped from rotating, and therefore the relay gear 26 meshing with the play gear 25 ′ is stopped from rotating, so that there is no clockwise rotating power urged by the friction arm 93.

On the other hand, the slippage between the limiter gear 17 and the intermediate gear 16 by the torque limiter 19 allows the motor 10 to continue rotating, and therefore the cam gear 85 continues to rotate counterclockwise. become.

Accordingly, as described above, the friction arm 93 is moved substantially rearward, and at this time, the pressing pin 98 of the friction arm 93 is
Is pressed backward, whereby the transmission slider 99 is moved rearward against the tensile force of the coil spring 100, and the tension arm 101 connected to the front end thereof is also moved rearward.

When the magnetic tape is traveling in the forward direction, as described above, the tension arm 101
Is in the auto-reverse preparation position, and its tension piece 101a
Is located on the front side of the engaging projection 73a of the direction lock member 71, the tension piece 101a pulls the engaging projection 73a backward by the rearward movement of the tension arm 101, whereby the direction lock The member 71 rotates clockwise against the elastic force of the elastic piece 75a of the leaf spring member 75 so that the engaging claw 72a is disengaged from the engaging notch 78a of the direction lever 64, and
With the movement of the direction lock member 71 in the clockwise direction, the knob lock member 83 is also rotated clockwise to release the lock of the direction knob 79 to the forward position and lock the direction lever to the forward position. Is released, the direction lever 64 is moved to the reverse position by the tensile force of the tension spring 70.

When the direction lever 64 reaches the reverse position, the slider 67a engaged with the notch 68a moves to the reverse position, the motor 10 rotates in the reverse direction, and the right head lever 55 moves to the non-operation position. That is, it is returned to the front side, and at the same time, the left head lever 5
6 is moved to the working position, ie, backwards, whereby
The take-up arm 22 is rotated clockwise, and its play gear 25 is meshed with the S-side reel base gear 9a,
As a result, the magnetic tape runs in the reverse direction.

The friction arm 93 and the transmission slider 99 return to the forward position almost simultaneously with the execution of the above-described auto reverse operation.

When the magnetic tape runs in the reverse direction and reaches the tape end, as described above, the friction arm 93 is moved substantially rearward, and at this time, the pressing pin 98 is moved to the transmission slider. 9
9 is pressed rearward, whereby the transmission slider 99 is moved rearward against the tensile force of the coil spring 100, and the tension arm 101 connected to the front end thereof is also moved rearward. Moved to

When the magnetic tape is running in the reverse direction, as described above, the tension arm 101 is at the automatic shut-off preparation position, and
Since a is located on the front side of the projection 80b of the mode lock plate 80, the tension piece 101a pulls the projection 80b backward by the backward movement of the tension arm 101,
As a result, the mode lock plate 80 is rotated clockwise against the counterclockwise rotation force by the resilient force of the elastic piece 75b of the leaf spring member 75 urged by the mode lock plate 80, and the roller 81 is rotated. Is the engaging hole 82a or 8 of the recording / reproducing lever 60.
2b, the recording / reproducing lever 60 is moved to the centering spring 63.
The head lever 56 is returned to the non-operation position by the elastic force of
0 is stopped.

The direction lever 64 may be returned to the forward position in conjunction with an appropriate mechanism, for example, an operation of removing the tape cassette from the cassette mounting recess 5 or the like.

The tape cassette 6 contains a magnetic tape 1 in a cassette case 104 having a horizontally long flat box shape when viewed from above.
The reel hubs 106 around which the reels 05 are wound are rotatably housed. A part of the magnetic tape 105 is exposed from one long side surface of the cassette case 104 to the outside.

[0132] Of the short side surfaces of the cassette case 104, erroneous erasure prevention claws 107a and 107b are formed so as to be foldable at positions near the long side surface opposite to the long side surface where the magnetic tape 105 is exposed. These erroneous erasure prevention nails 1
07a and 107b are those located on the right rear side when viewed from above with the surface where the magnetic tape 105 is exposed facing forward, and those located on the left rear side are those on the reverse side.

Reference numeral 108 denotes an insertion hole formed vertically through the center of the side of the cassette case 104 where the magnetic tape 105 is exposed in the left-right direction, and the cassette tape 6 is mounted in the cassette mounting recess 5. Then, the capstan 54 is inserted into the cassette case 1 through the insertion hole 108.
04 and is located inside the magnetic tape 105.

Reference numerals 109 and 110 denote detection members which have a substantially "L" shape when viewed from above, and whose bent portions are rotatable in the left and right directions at the right and left ends of the rear end of the chassis 7, respectively. It is supported by.

At the rear ends of the detecting members 109 and 110, detecting pieces 109a projecting toward the cassette mounting recess 5 are provided.
110a are formed, and the torsion springs 111, 1
By 11, a turning force in a direction in which the detection pieces 109 a and 110 a protrude into the cassette mounting recess 5 is urged.

Further, a connecting piece 109b projecting upward is formed at the end of the front piece extending substantially to the left of the detecting member 109, and the connecting piece 109b is formed at the end of the front piece extending substantially to the left of the detecting member 110. A connecting piece 110b protruding downward is formed.

The right-side detection member 109 is a forward-side detection member for detecting the presence / absence of the erroneous erasure prevention claw 107a (or 107b) located on the forward side, that is, the right rear when viewed from above. Left detecting member 110
Is a reverse side detection member for detecting the presence or absence of the erroneous erasure prevention claw 107b (or 107a) located on the reverse side, that is, at the rear left as viewed from above.

Reference numerals 112 and 113 denote recording permission / non-permission levers.
The left and right sides of the chassis 7 are separately movably supported in the front-rear direction.

A long hole 112a or a notch 113a extending in the left-right direction is formed at the rear end of the recording permission / rejection levers 112 and 113. The long hole 112a is provided with a connecting piece 109b of the forward detection member 109 and a notch. The connection piece 110b of the reverse side detection member 110 is slidably engaged with 113a.

At the front ends of the recording permission / refusal levers 112 and 113, movement preventing pieces 112b and 113b are respectively provided vertically.

At the right end of the upper recording re-lever 60, the blocked piece 1
14 is protruded rightward, and the left end is a piece 115 to be blocked.
Are protruded upward.

Thus, when the tape cassette 6 is mounted in the cassette mounting recess 5, the tips of the detecting pieces 109a and 110a of the detecting members 109 and 110 correspond to the erroneous erasure preventing claws 107a and 107b of the tape cassette 6, respectively. Is done. When the erroneous erasure preventing claws 107a and 107b are provided, the leading ends of the detection pieces 109a and 110a contact the erroneous erasure preventing claws 107a and 107b and cannot rotate further inward. The permission / refusal lever 112 is located at the rear end of the movement range, that is, at a position just behind the right blocked part 114 of the recording / reproducing lever 60 in which the movement blocking piece 112b is located at the recording permitted position and in the neutral position and rearward. The recording permission lever 113 on the left side is located at the front end of the movement range, that is, located at the recording permission position, and the movement preventing piece 113b is located rightward of the left blocked piece 115 of the recording / reproducing lever 60 at the neutral position. It is located at a position deviated forward from the position.

When the erroneous erasure preventing claws 107a and 107b of the tape cassette 6 mounted in the cassette mounting recess 5 are removed, the detecting pieces 109a and 110a enter the cassette case 104, so that the forward side The detecting member 109 rotates counterclockwise, and the reverse-side detecting member 110 rotates clockwise.

Therefore, the forward recording permission / non-permission lever 11
2 moves forward to the recording blocking position, that is, its blocking piece 112b.
Is a blocked piece 11 on the right side of the recording / reproducing lever 60 in the neutral position.
4 and the reverse-side recording permission / rejection lever 113 is retracted to the recording prevention position, that is, immediately after the blocked piece 115 on the left side of the recording / reproducing lever 60 whose blocking piece 113b is in the neutral position. Move to the position on the right. When the blocking piece 112b is located immediately to the right of the blocked piece 114 or the blocking piece 113b is located to the right of the blocked piece 115, the recording / reproducing lever 60 is moved further rightward, that is, toward the recording position. I can't move.

In this way, the erroneous erasure preventing claws 107a,
If at least one of 107b is removed, the recording / reproducing lever 60 cannot move to the recording position, so that recording is prohibited. However, the erroneous erasure prevention claw 107
If either a or 107b is not removed and recording on one side is possible, but no recording can be performed, waste occurs. In such a case, it is good that auto-reverse is not performed during recording,
Recording in only one direction is not a problem.

Therefore, in such a case, a mechanism for enabling reverse recording to be performed by mounting the cassette in the cassette mounting recessed portion 5 so that the side having no erroneous erasure preventing claw is on the right side will be described.

The reference numeral 116 indicates the right side, that is, even if there is no forward-side erroneous erasure prevention claw, when the reverse side erroneous erasure prevention claw is present and the direction lever 64 is moved to the reverse position, the forward-side erroneous erasure prevention claw is set. It is a state simulation mechanism that mimics something.

The state simulation mechanism 116 is composed of two links.

Reference numeral 117 denotes a first link, which is rotatably supported by the chassis 7 in a direction substantially extending in the front-rear direction, and has an engagement notch 117 extending substantially in the front-rear direction at its front end.
a is formed, and a connecting pin 117b is projected from the rear end.

Reference numeral 118 denotes a second link, which has a substantially "L" shape, and has a left rear end portion rotatably supported by the chassis 7. The right end 118a is a pressing portion, and the pressing portion 118a is
9, a pressed part 109 formed on the right side of the connecting piece 109b.
The connecting pin 117b of the first link 117 is slidably engaged with an engagement notch 118b long in the front-rear direction formed at the left end of the front edge. .

Reference numeral 119 denotes a connecting pin projecting rightward from the rear end of the direction lever 64, and slidably engages with the engaging notch 117a of the first link 117.

Thus, when the direction lever 64 is at the forward position, the pressing portion 118a of the second link 118 is in contact with or close to the front surface of the pressed portion 109c of the forward detecting member 109 at the recording prevention position. However, when the direction lever 64 is moved to the reverse position, the first link 117 is rotated clockwise as viewed from above, and the connecting pin 117b is moved slightly forward right. Thereby, the second link 11
8 is rotated in the counterclockwise direction, and its pressing portion 118a
Presses the pressed portion 109c of the forward side detection member 109 substantially rearward, so that the detection member 109 is rotated clockwise and moved to the recording allowable position.

Therefore, the erroneous erasure preventing claws 107a, 107b
If one of the tape cassettes 6 remains in the cassette mounting recess 5 with the remaining erroneous erasure prevention claw positioned in the rear left direction, the direction lever 64
The recording / reproducing lever 60 by moving the
Can be moved to the recording position,
Reverse recording can be performed.

Since the automatic shut-off is performed at the tape end of the reverse recording, recording is not performed on the side where recording is prohibited.

[0155]

As apparent from the above description, the tape recorder of the present invention mounts a tape cassette.
Mounting part and forward and reverse
Detecting member which is provided corresponding to each of the two erroneous erasure prevention pieces of the tape cassette to be moved between a recording allowable position when there is an erasure prevention piece and a recording prevention position when there is no erroneous erasure prevention piece. A recording lever that is provided slidably and is moved in one direction to form a recording mode; and a tape that is slidably provided and moved in one direction.
Forward mode and forward in other directions
River that reverses the tape by being moved
The direction lever that forms the source mode and the two detection members and the corresponding detection members that are separately connected to each other are permitted to record.
The recording lever in the recording mode when
Move to the allowable recording position and
Recording prevention position that prevents formation of the recording mode of the recording lever
Two recording permission lever and, via interpolated direction lever between the direction lever and the detection member to move
Forms the above reverse mode when the forward mode
Detection member that detects the presence or absence of an erasure prevention piece corresponding to
And a state mimic mechanism for forcibly moving the tape cassette to a recording allowable position.
When the one erroneous erasure prevention piece corresponds to reverse running
The tape cassette is mounted on the mounting section so as to face the detection member.
Corresponds to one erroneous erasure prevention piece depending on whether it is worn
The recording in the running direction of the tape cassette is enabled .

Therefore, according to the tape recorder of the present invention, recording is not possible if there are no erroneous erasure prevention pieces, but if there is any erroneous erasure prevention piece, the erroneous erasure prevention piece is connected to the reverse side. If a tape cassette is installed in such a way, reverse recording can be performed. Moreover, since the user can recognize this in advance, he or she is not in a panic when notified that only one-sided recording can be performed on the way.

In addition, only a state imitation mechanism needs to be added, and the mechanism does not become complicated.

It should be noted that the specific shapes and structures shown in the above embodiments are only examples for embodying the present invention, and the technical scope of the present invention is limitedly interpreted by these. It is not something to be done.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a state where a lid is opened and a cassette mounting portion is opened.

FIG. 2 is an exploded perspective view showing the entire mechanism.

FIG. 3 is an exploded perspective view showing an FR slider, an intermediate gear, a limiter gear, and a periphery thereof.

FIG. 4 is an exploded perspective view showing a play gear, an intermediate gear, and a peripheral portion thereof.

FIG. 5 is an exploded perspective view showing a play gear and parts around the play gear.

FIG. 6 is a plan view of a mechanism section.

FIG. 7 is a plan view showing a neutral state of a mechanism for forming a high-speed traveling mode.

FIG. 8 is a plan view showing a rewinding state.

FIG. 9 is a plan view showing a fast-forward state.

FIG. 10 is a plan view showing a state of forward reproduction.

FIG. 11 is a plan view showing a state of forward recording.

FIG. 12 is a plan view showing a state of reverse reproduction.

FIG. 13 is a plan view showing a state of reverse recording.

FIG. 14 is a plan view showing a review state.

FIG. 15 is a plan view showing a queue state.

FIG. 16 is an exploded perspective view showing an operation lever other than the direction switching lever and a lock mechanism thereof.

FIG. 17 is an exploded perspective view showing a direction switching lever, a lock portion thereof, and a part of a tape end detecting means.

FIG. 18 is a partially exploded perspective view showing a rotation transmission mechanism to a tape end detection mechanism.

FIG. 19 is an enlarged front view showing a lock portion of each operation lever.

FIG. 20 is a front view showing a stopped state.

FIG. 21 is a front view showing a state of forward reproduction with a part cut away.

FIG. 22 is a front view showing a state of reverse reproduction with a part thereof cut away.

FIG. 23 is a front view showing a forward recording state with a part thereof cut away.

FIG. 24 is an enlarged plan view showing a tape end detection mechanism.

FIG. 25 is an enlarged plan view showing a direction lock unit during reproduction.

FIG. 26 is an enlarged plan view showing a direction lock unit during forward recording.

FIG. 27 is an enlarged plan view showing a direction lock portion during reverse recording.

FIG. 28 is a plan view showing a state of a tape end detection mechanism during forward reproduction.

FIG. 29 is a plan view showing another state of the tape end detection mechanism during forward reproduction.

FIG. 30 is a plan view of the tape end detection mechanism in a state where the tape has stopped running during forward reproduction.

FIG. 31 is a plan view of a main part showing an operation of releasing a lock on a direction switching lever at a tape end during forward reproduction.

FIG. 32 is a plan view of a main part showing movement of a direction switching lever to a reverse position at a tape end during forward reproduction.

FIG. 33 is a plan view showing the state of the tape end detection mechanism during reverse playback.

FIG. 34 is a plan view showing another state of the tape end detection mechanism during reverse playback.

FIG. 35 is a plan view of the tape end detecting mechanism in a state where the running of the tape during reverse playback is stopped.

FIG. 36 is a plan view of a main part showing an operation of releasing a lock on a recording / reproducing lever at a tape end during reverse reproduction.

FIG. 37 is a plan view of a main part showing a state in which the recording / reproducing lever returns to a neutral position and is automatically shut off at a tape end during reverse reproduction.

FIG. 38 is a perspective view of a tape cassette.

FIG. 39 is a perspective view of the tape cassette viewed from another angle.

FIG. 40 is a perspective view showing an erroneous erasure prevention mechanism.

FIG. 41 is a plan view showing the erroneous erasure prevention mechanism in a tape cassette having an erroneous erasure prevention piece and in a recording permission state.

FIG. 42 is a plan view showing the erroneous erasure prevention mechanism in a recording rejection state.

FIG. 43 is a plan view of the erroneous erasure prevention mechanism showing a state in which the state simulation mechanism is functioning.

FIG. 44 is a front view of the erroneous erasure prevention mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tape recorder 5 Mounting part 6 Tape cassette 60 Recording lever 64 Direction lever 107a Erase erasure prevention piece 107b Erase erasure prevention piece 109 Detecting member 110 Detecting member 112 Recording permission / refusal lever 113 Recording permission / refusal lever 116 State simulation mechanism

Claims (1)

(57) [Claims] 1. A mounting section for mounting a tape cassette, and the tape corresponding to forward running and reverse running.
A detection member which is provided corresponding to each of the two erroneous erasure prevention pieces of the cassette and is moved between a recording allowable position when there is an erroneous erasure prevention piece and a recording prevention position when there is no erroneous erasure prevention piece; A recording lever that is slidably provided and forms a recording mode by being moved in one direction ; and a recording lever that is slidably provided and moved in one direction.
Forward mode for running the tape forward and other modes
The tape in reverse direction.
Causing a direction lever to form a reverse mode, it is linked to another each and the two detection members, the corresponding detection unit
When the recording material is at the recording permission position, the recording lever
Move to the print permitting position that allows the formation of the above recording mode
When in the recording blocking position, the recording lever
Two recording permission / non-permission levers that move to a recording prevention position for preventing the formation of the recording mode, and are inserted between the direction lever and the detection member, and the direction lever forms the reverse mode.
The error mode corresponding to the forward mode
The above-mentioned one detection member for detecting the presence or absence of
A state simulation mechanism for forcibly moving the tape cassette to an allowable position, wherein one of the two erroneous erasure prevention pieces of the tape cassette is
At one time, the one erroneous erasure prevention piece is
Tape cassette so that it faces the corresponding detection member
Depending on whether the unit is mounted on the mounting part
Of the above tape cassette corresponding to the erroneous erasure prevention piece
A tape recorder characterized in that it enables recording in different directions .