JPH073711B2 - Automatic reversing switching device for compound tape recorder - Google Patents

Description

Description: [Industrial field of use] The present invention relates to a dual tape recorder capable of storing a plurality of cassette tapes in a single tape storage portion, and relates to a reverse running state and a forward running state of a cassette tape. The present invention relates to an automatic inversion switching device for a dual tape recorder that automatically switches.

[Conventional technology]

Recently, JP-A-59-154660 and JP-A-61-240461
As disclosed in the publication, a continuous mode capable of driving a plurality of cassette tapes and sequentially reproducing a plurality of loaded cassette tapes, and reproducing one cassette tape and a reproduction signal thereof. There is known a double-sided tape recorder capable of operating in an edit mode for recording the data in the other cassette. Also, as another device of this type, in order to simplify the structure, a plurality of cassette tapes are stored in one tape storage portion, and a common capstan shaft and a plurality of pinch rollers that operate independently are optional. It has been proposed to run the cassette tape of.

[Problems to be solved by the invention]

In the above-mentioned dual tape recorder, for example, the first
If the second cassette tape can be driven, and the operation in the continuous mode or the edit mode is performed,
It is more convenient for both the first and second cassette tapes to be set to run on the forward side first, and the user can perform an error-free operation. in this case,
For example, when the continuous mode or the edit mode is selected while the second cassette tape is running on the reverse side, the pinch roller is pressed against the reverse side capstan shaft via the cassette tape, and then the forward side capstan shaft is pressed. It is necessary to switch to a state in which the pinch rollers are pressed against each other via the cassette tape. However, in the above conventional device, the specific configuration for appropriately performing the above switching operation is not considered,
Development of such a structure is desired.

[Means for solving problems]

In order to solve the above-mentioned problems, an automatic inversion switching device for a multiple tape recorder according to the present invention stores the first cassette tape and the second cassette tape in a single tape storage portion while accommodating them together. One capstan shaft that is commonly used for running the cassette tape on the forward side and one capstan shaft that is used for running the second cassette tape on the reverse side are provided, and the capstan shaft on the forward side is provided. Selectively the first and second pinch roller means via the first and second cassette tapes, and the third pinch roller means on the reverse side capstan shaft via the second cassette tape. By pressing the first cassette tape and the second cassette tape in a predetermined direction independently or simultaneously at a constant speed In a multiple-type tape recorder to be played, there are a plurality of continuous modes for sequentially reproducing both cassette tapes and an editing mode for reproducing one cassette tape and recording the reproduced signal on the other cassette tape. It is switched to the mode position by a slide operation, and the first and second modes are changed according to each mode position.
It is equipped with a mode select lever that switches the pinch roller means of the forward side capstan shaft between a state in which pressure contact is possible and a state in which pressure contact is blocked, and a magnetic head that is compatible with both cassette tapes described above. A sub-chassis for bringing the magnetic head into contact with the first and second cassette tapes, and a sub-chassis provided on the sub-chassis corresponding to the first and second pinch roller means. A first pinch operation lever that acts to press the second pinch roller means to the forward side capstan shaft, and a third pinch roller means provided on the sub chassis corresponding to the forward movement of the sub chassis. And a second pinch operation lever which acts to press the third pinch roller means into pressure contact with the capstan shaft on the reverse side. When the first and second pinch operation levers are moved by the idling operation, the first pinch operation lever is in the operating position and the second pinch operation lever is in the retracted position from the operating position, and the first pinch operation lever is retracted. The program switching lever includes a program switching lever that is placed in the position and switches to a state where the second pinch operation lever is placed in the operating position, and a cam that is in contact with the program switching lever. The rotation of the cam slides the program switching lever. The switching drive means and the switching drive means in response to the mode select lever being slid to the continuous mode position or the edit mode position in a state in which the second pinch operation lever is in the operating position for the third pinch roller means. And a switching start-up means for starting up.

[Work]

According to the above configuration, for example, when the second cassette tape is running on the reverse side, the second pinch operation lever brings the third pinch roller means into pressure contact with the reverse side capstan shaft. Therefore, when the above operation is stopped, the second pinch operation lever is placed in the operating position and the first pinch operation lever is placed in the retracted position.

Next, slide the mode select lever from this stopped state to the position of continuous mode or edit mode,
According to the mode position, the first and second pinch roller means are switched between a press-contact enabling state and a press-contact preventing state with respect to the forward side capstan shaft. Further, in response to the sliding operation of the mode select lever, the switching activation means is activated, which activates the switching drive means. The switching driving means slides the program switching lever, and by this operation, the first pinch operation lever is arranged at the operating position and the second pinch operation lever is arranged at the retracted position.

After that, when the play lever is operated in this state, the sub-chassis moves forward, and the first pinch operation lever brings the first and second pinch roller means into pressure contact with the capstan shaft on the forward side.

Thus, in the automatic reverse switching device of the present invention, for example,
In the state where the reverse side running of the second cassette tape is set and the pinch roller means can be pressed against the reverse side capstan shaft via the cassette tape, the continuous mode or the edit mode is selected by the mode select lever. When this is done, the pinch roller means can be automatically switched to a state in which it can be pressed against the forward side capstan shaft via the cassette tape.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

In the dual tape recorder, for example, as shown in FIG. 7, the first and second cassette tapes 1 and 2 are stored in a single tape storage portion (not shown) in a stacked manner. Forward rotation) Capstan shaft 45 and REV for traveling
(Reverse) Capstan shaft 47 for traveling is provided,
Further, the magnetic head 5 and the first pinch roller means 9 are provided at positions facing the magnetic tape surface of the cassette tape 1, and the magnetic head 7, the second and third pinch are provided at positions facing the magnetic tape surface of the cassette tape 2. Equipped with roller means 8.6. The magnetic heads 5 and 7 are attached to the same reference base 3, and the pinch roller means 6 and 8 and 9 are attached.
Has a structure capable of operating independently. The side of the cassette tape 1 (hereinafter referred to as T ₁ ) is
It has a function to play only in the FOR direction, and the cassette tape 2 (hereinafter referred to as T ₂ ) side records in both FOR and REV directions.
It has a function that allows playback. Further, the tape recorder in the embodiment of the present invention reproduces at T ₁ ,
_{It has} the editing function to record on the ₂ (FOR side) and the continuous playback function to continuously perform the FOR playback and REV playback of T ₂ after the playback of T ₁ is completed.

In the automatic reversal switching device for a multiple tape recorder according to the present invention, as shown in FIG. 1 (a), the logic cam gear 14 has a toothless portion 14a in a part thereof. A gear 11 driven in the F direction by a drive unit (not shown) is provided at a position corresponding to. The logic cam gear 14 is constituted so that it can be rotated by being biased by a starting spring (not shown) in the E direction and further driven by the gear 11 to rotate in the E direction. Protrusion 14b formed on the side surface of 14
Is restricted by being locked at one end of the trigger lever 15. The trigger lever 15 is rotatably provided with a shaft 15a as a fulcrum, and the other end of the trigger lever 15 is engaged with a pin 16a formed at a substantially central portion of the end select lever 16. End select lever 16
A pin 16e is formed at the upper end portion of the, and this pin 16e is engaged with one end portion of the sensor lever 17. The sensor lever 17 is rotatably supported by a shaft 17a, and the other end thereof is connected to an end cam 18 rotatably provided. The end select lever 16 has the pin 16
An elongated hole 16g is formed in the longitudinal direction of the end select lever 16 below e, and the end select lever 16 can be moved within a predetermined range in the CD direction by a pin 16d engaged with the elongated hole 16g. It is provided. An inclined portion 16b is formed below the elongated hole 16g, and the end select lever 16 is formed to have a small thickness below the inclined portion. Further, below the pin 16a of the end select lever 16, there is formed a convex portion 16c capable of engaging with the pin 21a formed at one end of the lock plate release lever 21, and below the convex portion 16c. , A pin 16f capable of engaging with the tip of the RVS lever 31 is formed.

A cam 13 is fixed to the side surface of the logic cam gear 14, and a built-up portion 19e formed at a substantially middle portion of the mode select lever 19 is in contact with the cam 13.
A long hole 19a is formed on the upper side of the mode select lever 19, and the mode select lever 19 is provided so as to be movable in a predetermined range in the CD direction by engaging a pin 19b in the long hole 19a. . A positioning pin 19c is formed on the upper end of the mode select lever 19, and the positioning pin 1c
9c is a recess 20a, 20b, 20c, 2 formed in the mode setting plate 20.
It can be engaged with any of 0d. Pin 19 above
A pin 19d capable of contacting the inclined portion 16b is formed on the back side of c. A convex portion 19l having an inclined surface 19k is formed on the lower surface of the mode select lever 19, and the convex portion 19l is formed.
Pins 19p and 19p
19o is formed. A pin 19n is formed below the pin 19o, and a long hole 31a formed at the rear end of the RVS lever 31 is engaged with the pin 19n.

A cam 12 is formed on the side surface of the logic cam gear 14, and a pin 22c capable of engaging with the cam 12 is located near the cam 12. The pin 22c is formed at the tip of an arm portion 22b protruding from one side of the first program interlocking lever 22. A pin 22 that can come into contact with one end of a second program interlocking lever 33, which will be described later, is provided at the base of the arm 22b.
e is formed, and a switch 56 that can be pressed by one end of the second program interlocking lever 33 is provided diagonally below the pin 22e. The first program interlocking lever 22 has an elongated hole 22f formed in its longitudinal direction.
The first program interlocking lever 22 is provided so that the pin 22g is engaged with the elongated hole 22f and is movable in a predetermined range in the AB direction. Further, the first program interlocking lever 22 is biased in the A direction by the spring 23. One end of the first program interlocking lever 22 is formed with a pin 22a that abuts the inclined surface 19k and the convex portion 19l and opposes the bias of the spring 23, and the other end of the cam lock lever 24 has one end. Arm 24c
A pin 22d that engages with is formed. The cam lock lever 24 is rotatably supported by a pin 24a, and a pin 24b that engages with an elongated hole formed in the program lever 27 is formed at the tip of the other arm 24d. Further, the tip of the one arm 24c is provided with the program switching cam gear 2
The protrusion 25a or the protrusion 25b formed on the side surface of 5 can be engaged. Program switching cam gear
25 is provided so as to be biased by a starting spring (not shown) so as to be rotationally started in the F direction. The program switching cam gear 25 has two toothless portions 25c.2 in the diametrical direction.
5c is formed, and a gear 26 that rotates in the E direction by transmitting a rotational force from a rotary drive source (not shown) is arranged at a portion corresponding to one of the toothless portions 25c.
A program switching cam 28 is fixed to the side surface of the program switching cam gear 25. The program switching cam 28 includes an arm portion formed at one end of the program switching lever 29.
29a is abutted.

The program switching cam gear 25, the starting spring thereof, the gear 26, the rotation drive source thereof, and the program switching cam 28 constitute a switching drive means. Also, pin 19o and pin 19 of the mode select lever 19 above
p, the first switching lever 35, the second switching lever 36, the shafts 29f and 29g of the program switching lever 29, the second program interlocking lever
33, the first program interlocking lever 22, the power switch 56, the cam lock lever 24, and the projecting portion 25b of the program switching cam gear 25 constitute switching start-up means.

The program switch lever 29 has a long hole 29b in its longitudinal direction.
Is formed, and the program switching lever 29 is
The pin 29c is engaged with 29b so as to be movable within a predetermined range in the AB direction. In addition, the program switch lever 29
Is urged in the B direction by a spring 30. A pin 29d is formed at the other end of the program switching lever 29, and the RVS lever 31 is rotatably supported by the pin 29d. In addition, the program switching lever 29 has an overhang 29j.
Is formed, and a pin 29e is formed at a substantially central portion of the overhanging portion 29j. The pin 29e is engaged with an elongated hole 33b formed in the second program interlocking lever 33. The second program interlocking lever 33 is A at pin 29e above.
It is provided so as to be movable in a predetermined range in the -B direction and is biased in the A direction by a spring 34. Overhang 29 above
Further, a pin 29f and a pin 29g are formed at j with a predetermined interval. The first switching lever 3 is attached to the pin 29f.
5, the second switching lever 36 is rotatably supported by the pin 29g, and one end of the first switching lever 35 is connected to the pin 19p of the mode select lever 19 and one end of the second switching lever 36. Are adapted to engage the pins 19o, respectively. In addition, the first and second switching levers 35 and 36
The other ends 35a, 36a of the second program interlocking lever 33 are
Is engaged with the pin 33a formed on the.

Further, as shown in FIG. 2B, the mode select lever 19 is further provided with concave portions 19f, 19j, 19i and convex portions 1
9g and 19h are formed. In the vicinity of the convex portion 19g, T ₁
Side pinch roller means (first pinch roller means)
9 is provided. In this pinch roller means 9, the lever 39 is rotatably supported by a shaft 41. An arm 39a is formed at one end of the lever 39, and the arm 39a can correspond to the recesses 19f and 19j and the protrusion 19g. At the other end of the lever 39, a roller 39b which can be pressed against the FOR side capstan shaft 45 is rotatably provided. Further, in the substantially central portion of the lever 39,
One end of the leaf spring 48 is fixed, and the other end of the leaf spring 48 is arranged so that it can be pressed by the tip of a first pinch operation lever 52 described later. On the other hand, near the protrusion 19h, FOR side pinch roller means (second pinch roller means) 8 on the T ₂ side is provided. In the pinch roller means 8, the lever 40 is rotatably supported by a shaft 42. The arm 40a is attached to one end of the lever 40.
Is formed, and the arm portion 40a can correspond to the concave portion 19i and the convex portion 19h. At the other end of the lever 40, a roller 40b that can be pressed against the FOR side capstan shaft 45 is rotatably provided. Further, one end of a leaf spring 49 is fixed to the substantially central portion of the lever 40, and the other end of the leaf spring 49 has a first pinch operation lever 52.
It is arranged so that it can be pressed against the tip of the. In addition,
In the drawings, for convenience, the pinch roller means 8, the pinch roller means 9, and the capstan shaft 45 are shown displaced from each other. The first pinch operation lever 52 is rotatably supported by a shaft 51a formed on the sub-chassis 51, and is biased by a spring 54 so that it can rotate in the E direction. The sub-chassis 51 has a shaft 51b formed at a predetermined distance from the shaft 51a.
A second pinch operation lever 53 is rotatably supported by the. The second pinch operation lever 53 is biased by the spring 55 and
It can be rotated in any direction. Above the second pinch operation lever 53, pinch roller means (third pinch roller means) 6 on the REV side of T ₂ is provided. An arm portion 43a is formed at one end of the lever 43 in the pinch roller means 6, and a roller 43b capable of being pressed against the REV traveling capstan shaft 47 is rotatably provided at the other end. The lever 43 is rotatably supported by a shaft 44, and a pin 43c formed on the lever 43 is fixed with a leaf spring 50 which can be pressed against the tip of the second pinch operation lever 53. . The second pinch operation lever 5
3 and the contact pin 5 in the first pinch operation lever 52
3a and 52a are respectively in contact with the end faces 29i and 29h formed on the program switching lever 29 at a predetermined interval. Below the program switching lever 29, AB
A lock plate 38 is provided that can move in any direction. An inclined portion 38b is formed at the tip of the lock plate 38, and the inclined surface 38b is engaged with a pin 21b formed on the lock plate release lever 21. Further, the lock plate 38,
A hook portion 38a is formed that can engage with a pin 37a formed on a play lever 37 that can move the sub chassis 51 in the CD direction.

In the above configuration, the operating state in each mode is as follows.

(1) Continuous Mode In the continuous mode state, as shown in FIG. 1A, the pin 19c of the mode select lever 19 is engaged with the recess 20a of the mode setting plate 20. When the tape recorder is stopped in this state, the sub-chassis 51 is descending in the C direction as shown in FIG. 7B, and the first and second sub-chassis 51 are provided.
Depending on the tips of the pinch operation levers 52 and 53, the leaf springs 48, 49 and 50 of the pinch roller means 9 and 8 and 6 cannot be pressed. When the play lever 37 is pressed in the D direction from such a state, the sub-chassis 51 is pressed by the play lever 37 and slides in the D direction as shown in FIG. 5 and 7 are pressed against the magnetic tape surface (not shown). This state is maintained by locking the pin 37a to the hook portion 38a of the lock plate 38. Simultaneously with the sliding of the sub chassis 51, the first pinch operation lever 52 and the second pinch operation lever 53 also slide. At this time, since the program switching lever 29 is moved in the A direction by the cam 28, the second pinch operation lever 53 cannot press the leaf spring 50 attached to the lever 43. On the other hand, the first pinch operation lever
52 presses the leaf springs 48, 49 attached to the levers 39, 40, and rotates the levers 39, 40 in the F direction with the shafts 41, 42 as the fulcrum. However, since the convex portion 19h of the mode select lever 19 is located at a position facing the arm portion 40a of the FOR side lever 40 on the T ₂ side, the lever 40
Causes the arm portion 40a to abut against the convex portion 19h, the rotation in the F direction is restricted, and the arm portion 40a is not pressed against the capstan shaft 45. Since the recess 19f is located at a position facing the arm portion 39a of the lever 39 on the T ₁ side, only the pinch roller means 9 on the T ₁ side comes into pressure contact with the capstan shaft 45. At the same time, a play idler circuit or the like (not shown) operates to enter the reproduction state of T ₁ . As described above, in the continuous mode of the tape recorder in this embodiment, T ₁ is reproduced first. Then, at the end of the tape winding, it switches to T ₂ FOR playback.

That is, as shown in (a) of the figure, when the sensor lever 17 detects the end of the tape winding, the end cam 18 causes the shaft to move.
Rotate in the direction of E using 17a as a fulcrum, and select the end select lever 16
By pressing the pin 16e formed on the, the end select lever 16 is slid in the D direction. At this time, since the convex portion 16c of the end select lever 19 is not positioned so as to engage with the pin 21a of the lock plate release lever 21, the lock plate release lever 21 is not operated. End select lever 16
The pin 16a formed at the position pushes the trigger lever 15, and the trigger lever 15 is rotated in the E direction about the shaft 15a as a fulcrum, so that the trigger lever 15 and the projection 14b formed on the logic cam gear 14 are Disengage. The logic cam gear 14 is activated in the E direction by the activation spring, meshes with the gear 11, and rotates in the E direction. With this, cam
13 presses the built-up portion 19e of the mode select lever 19 and, as shown in FIG. 2 (b), the mode select lever 19e.
The positioning pin 19c of 19 is slid from the recess 20a of the mode setting plate 20 to the recess 20b.

Since the pin 22a of the first program interlocking lever 22 is located at the end of the inclined surface 19k of the mode select lever 19 in the D direction, the pin 22c of the first program interlocking lever 22 is rotated when the logic cam gear 14 rotates. It passes outside the cam 12. Therefore, the first program interlocking lever 22 does not slide.

₍₂₎ T 2 - Cycle playback mode T ₂ - In Cycle reproduction mode, as described above,
The positioning pin 19c of the mode select lever 19 is engaged with the recess 20b of the mode setting plate 20. Therefore, the convex portion 19g of the mode select lever 19 is located at a position facing the arm portion 39a of the T ₁ side pinch roller lever 39, and the concave portion is located at a position facing the arm portion 40a of the T ₂ side pinch roller lever 40. 19i is located. In the T ₂ -cycle reproduction mode, the stopped state (the state where the sub chassis 51 is retracted in the C direction)
When the play lever 37 is pressed from the
The magnetic heads 5 and 7 attached to the sub-chassis 51 are pressed against the magnetic tape surface by sliding in the direction, and this state is held by the lock plate 38. At the same time, the first pinch operation lever 52 and the second pinch operation lever 53 attached to the sub chassis 51 also slide. The second pinch operation lever 53 does not contact the leaf spring 50 attached to the lever 43. On the other hand, the first pinch operation lever 52 abuts and presses against the leaf springs 48 and 49 attached to the levers 39 and 40, thereby rotating the levers 39 and 40 in the F direction with the shafts 41 and 42 as fulcrums. However, since the uneven portion of the mode select lever 19 exists at the above-mentioned position, the lever 39 on the T ₁ side is restricted from rotating in the F direction due to the contact between the arm 39a and the convex portion 19g, and the T ₁ side Roller 39b cannot be pressed against capstan shaft 45. On the other hand, the FOR side roller 40b on the T ₂ side is pressed against the capstan shaft 45 without being restricted by the convex portion of the mode select lever 19. At the same time, a play idler, circuit, etc., not shown, operate, and the T ₂ FOR reproduction state is set.

Next, the switching operation from FOR to REV and the operation state during REV will be described. As shown in FIG. 2 (a), T ₂ - When the tape ends wound in FOR state in the cycle playback mode, the sensor lever 17 detects the end of tapes. The sensor lever 17 is attached to the shaft 17a by the end cam 18.
Is rotated in the E direction about the fulcrum and presses the pin 16e formed on the end select lever 16,
Slide in the D direction. At this time, the convex portion 16c of the end select lever 16 is connected to the pin 21a of the lock plate release lever 21.
The lock plate release lever 21 is not operated because the lock plate release lever 21 is not located at a position opposite to. End select lever
A pin 16a formed on 16 presses the trigger lever 15. The trigger lever 15 rotates in the E direction with the shaft 15a as a fulcrum, and releases the engagement with the protrusion 14b formed on the logic cam gear 14. The logic cam gear 14 starts in the E direction by the starting spring and meshes with the gear 11,
Rotate in the E direction with 12. Here, since the mode select lever 19 is moving in the D direction as described above, the pin 22a of the first program interlocking lever 22 is in contact with the convex portion 19l of the mode select lever 19. Therefore, the pin 22c of the first program interlocking lever 22 is at a position where it can be engaged with the inside of the cam 12, and slides on the inside 12a of the cam 12 when the logic cam gear 14 rotates. Pin 22c is cam
Sliding inside 12a of 12 will cause the 1st program interlocking lever 2
2 slides in the B direction, pin 22d is the cam lock lever 24
Pull the arm part 24c in the direction B. Cam lock lever 24 is shaft 24a
Rotate in the F direction around the
The engagement with the protruding portion 25a formed on the is released. The program switching cam gear 25 is activated in the F direction by the activation spring, and is further rotated 180 ° in the F direction by the gear 26. Then, the program switching lever 29, in which the arm portion 29a is in contact with the program switching cam 28, slides in the B direction as shown in FIG. 3 (a). Since the mode select lever 19 is moving in the D direction as described above, the RVS lever 31 attached to the program switching lever 29 is positioned by the pin 19n. When the RVS lever 31 slides in the B direction together with the program switching lever 29, the pin 16f formed on the end select lever 16 is pressed, and the convex portion 16c of the end select lever 16 engages with the pin 21a of the lock plate release lever 21. To meet.

When the program switching lever 29 slides in the B direction, the contact pin 53a of the second pinch operation lever 53, which has been urged by the spring 55, is pressed against the end surface 29i as shown in FIG. Rotate in the E direction around the fulcrum. The second pinch operation lever 53 abuts against the leaf spring 50 and presses it. The lever 43 rotates about the shaft 44 as a fulcrum in the E direction, and presses the roller 43b against the capstan shaft 47. On the other hand, the contact pin 52a of the first pinch operation lever 52 is moved by the spring 54 with the shaft 51a as a fulcrum.
Is rotated in the direction. Therefore, the first pinch operation lever 52
Releases the pressure on the leaf springs 48 and 49, and the capstan shaft 45
The pressure contact of the roller 40b that was in pressure contact with is released. At the same time, a program idler circuit or the like (not shown) operates to enter the RE playback state of T ₂ .

At the end of tape winding in such T ₂ REV playback state,
As shown in (a) of the figure, the sensor lever 17 detects the end of the tape winding, and the end select lever
16 slides in the D direction. At this time, at the position facing the convex portion 16c of the end select lever 16, as described above,
Since the pin 21a of the lock plate release lever 21 is located,
The lock plate release lever 21 slides in the D direction as the end select lever 16 slides. The pin 21b of the lock plate release lever 21 that slides in the D direction presses the inclined surface 38b of the lock plate 38. The lock plate 38 slides in the A direction and at the same time releases the engagement between the hook portion 39a and the pin 37a of the play lever 37, and becomes a stopped state. In the tape recorder of this embodiment, the pin 16a of the end select lever 16 does not rotate the trigger lever 15 when the end select lever 16 slides, but the trigger lever 15 rotates with the lock plate release lever 21 sliding. Let
It is possible to rotate the logic cam lever 14.

As described above, T ₂ - In Cycle playback mode, logic cam gear by the operation of the FOR reproduced after the sensor lever 17
When 14 rotates, the program switching cam gear 25 is rotated via the first program interlocking lever 22, the program switching lever 29 is slid, and the pinch operation levers 52 and 53 are switched to bring them into the REV state. Then, after the REV reproduction, the lock plate release lever 21 operates by switching the end select lever 16 and becomes a stopped state.

(3) T ₂ continuous playback mode Fig. 4 (b) shows the operating state in the FOR direction in the T ₂ continuous playback mode (REV side omitted). Mode select lever 1
The positioning pin 19c of 9 faces the recess 20c of the mode setting plate 20. Similar to the T ₂ -cycle reproduction mode described above, the convex portion 19g of the mode select lever 19 is located at a position facing the arm portion 39a of the lever 39 in the pinch roller means 9 on the T ₁ side, and the pinch roller lever 40 on the T ₂ side is provided. A recess 19i is located at a position facing the arm 40a. Continuous mode, or, T ₂ - sub-chassis 51 in the same manner as in the cycle mode playback slides in the D direction, the first pinch operation lever 52 presses the leaf spring 48, 49. The rollers 39b and 40b rotate in the F direction, and due to the relationship between the uneven portions of the mode select lever 19 and the levers 39 and 40, the roller 40b is pressed against the capstan shaft 45, and the roller 39b is moved to the capstan shaft 45. By restricting the pressure contact of T ₂ , the FOR reproduction state of T ₂ is established.

Next, the switching operation from FOR to REV at T ₂ and the operation state during REV will be described. As shown in FIG. 6 (a), in the FOR condition in T ₂ continuous playback mode, T ₂ - Similar to Cycle reproduction mode, the sensor lever 17 detects the end of tapes, end the select lever 16 is D Slide in the direction. At this time, the RVS lever 31 is in a state in which it cannot correspond to the convex portion 16c formed on the end select lever 16 by further sliding the mode select lever 19 in the D direction, and the lock plate release lever 21 is operated. There is nothing to do. On the other hand, since the pin 16a presses the trigger lever 15, the logic cam gear 14 engaged with the trigger lever 15 rotates in the E direction, and the pin 22c of the first program interlocking lever 22 slides the inside 12a of the cam 12. By moving, the first program interlocking lever 22 slides in the B direction, and the cam lock lever 24 and the program switching cam gear 25
To disengage from. Program switching cam gear 25 is F
180 ° in the direction, and as shown in FIG. 5 (a), the program switching lever 29 is slid in the B direction to enter the T ₂ REV reproduction state. At this time, since the RVS lever 31 attached to the program switching lever 29 is positioned by the pin 19n of the mode select lever 19, the pin 16f formed on the end select lever 16 is not pushed. In REV reproduction state of such T _2, as shown in FIG. (B), the pinch roller means 9 of T _1, and, FOR-side pinch roller means 8 of T ₂ are not pressed against the capstan shaft 45.

Becomes the end turns of tape REV state of T _2, in the same manner as described above, the trigger lever 16c to end the select lever 16 is slid in the direction D, formed in the end the select lever 16
Does not operate the lock plate release lever 21. Meanwhile, pin 16
Since a presses the trigger lever 15, the logic cam gear 14 rotates. First program interlocking lever 22 pin
22a slides on the inside 12a of the cam 12 so that the first
The program interlocking lever 22 slides in the B direction to disengage the cam lock lever 24 and the program switching cam gear 25. Since the program switching cam gear 25 rotates in the F direction, the program switching lever 29 is pressed by the cam 28 in the A direction. Therefore, the first and second pinch operation levers 52 and 53 are switched to enter the FOR reproduction state. As described above, in the T ₂ continuous playback mode, after the FOR / REV playback, the logic cam gear 14 is rotated by the operation of the sensor lever 17, and the program switching cam gear 25 is rotated via the first program interlocking lever 22 to program the program. By sliding the switching lever 29 and switching the first and second pinch operation levers, FOR and REV are switched, and continuous reproduction of FOR and REV is repeated.

(4) Edit mode FIG. 6 (b) shows the operation state in the edit mode. The positioning pin 19c of the mode select lever 19 is connected to the mode setting plate 2
It engages with the 0 recessed portion 20d. A recess 19j of the mode select lever 19 is provided at a position facing the arm 39a of the lever 39 in the pinch roller means 9 on the T ₁ side, and a recess 19i is provided at a position facing the arm 40a of the pinch roller lever 40 on the T ₂ side. positioned. When the play lever 37 and the recording lever (not shown) are pressed from the stopped state, the sub chassis 51 slides in the D direction. The first pinch operation lever 52 presses the leaf springs 48 and 49, so that the rollers 39b and 40b rotate in the F direction. Since this rotation is not restricted by the concave portion of the mode select lever 19, the rollers 39b and 40b are pressed against the capstan shaft 45, respectively. Incidentally, the editing mode using the coaxial capstan shaft 45, and reproduced by T ₁ side, T ₂
Since it is recorded on the side, the other side is in the FOR state.
In the edit mode, the pin 19d formed on the mode select lever 19 presses the inclined surface 16b of the end select lever 16 to move the end select lever 16 to its convex portion 16c, as shown in FIG. Is the lock plate release lever 2
It is rotated to a position facing the pin 21a of 1. When the end of the tape winding is reached in this state, the sensor lever 17 detects the end of the tape winding, and the end select lever 16 slides in the D direction and the convex portion 16c of the end select lever 16 releases the lock plate, as described above. Slide lever 21. The lock plate release lever 21 that has slid in the D direction releases the engagement between the lock plate 38 and the play lever 37 and brings them into a stopped state. At this time, the end select lever 16
The pin 16a of does not rotate the trigger lever 15.

Next, automatic switching will be described.

With automatic switching, when the continuous mode or the edit mode is selected from the REV stop state in T ₂ mode, it is automatically switched to the FOR stop state and the operation on the FOR side is performed when the play lever or the recording lever is pressed. To do so. In the present embodiment, by selecting the respective tape mode by the mode select lever 19, pinch roller means corresponding to each mode is intended to abut against the capstan shaft, the T ₂ mode when the continuous mode is selected the cycle playback, at the time of editing mode select a continuous playback of T ₂ mode, switched via each.

(1) When the continuous mode is selected The positioning pin 19 of the mode select lever 19 in the REV state in the T ₂ -cycle reproduction mode shown in FIG. 3 (a)
The c is engaged with the recess 20b of the mode setting plate 20. To select the continuous mode from the stopped state (the state where the sub-chassis 51 is retracted in the C direction in FIG. 2B), the positioning pin 19c of the mode select lever 19 is engaged with the recess 20a of the mode setting plate 20. So that the mode select lever 19
Slide in the direction. At this time, the pin 19o formed on the mode select lever 19 is connected to the arm portion 36b of the second switching lever 36.
Press. The pressed second switching lever 36 rotates in the F direction around a shaft 29g formed on the program switching lever 29 as a fulcrum, and presses the engagement pin 33a incorporated in the arm portion 36a, thereby interlocking with the second program. Slide the lever 33 in the B direction. Since the pin 22e formed on the first program interlocking lever 22 and the power switch 56 are in contact with the tip of the second program interlocking lever 33, the pin 22e is pressed when the second program interlocking lever 33 slides. Then, the first program interlocking lever 22 is slid in the B direction and the rotary drive source is turned on. The pin 22d formed on the first program interlocking lever 22 is a cam lock lever 24.
Pull the arm 24c of. The cam lock lever 24 rotates in the F direction around the shaft 24a as a fulcrum, and disengages from the projection 25b formed on the program switching cam gear 25. The program switching cam gear 25 is activated in the F direction by the activation spring and meshes with the gear 26 to rotate 180 ° in the F direction. Program switching cam 28 Program switching cam fixed to gear 25
Also rotates, pressing the arm portion 29a of the program switching lever 29, and as shown in FIG. 1 (a), the program switching lever 29
Slide 29 in direction A. Program switch lever 29
The first and second pinch operation levers 52
53 rotates in the F direction, and as shown in FIG. 6B, the contact pins 52a and 53a of the pinch operation levers 52 and 53 are urged by the end faces 29h and 29i of the program switching lever 29, respectively.
It becomes a state. As shown in (c) of the figure, as the mode select lever 19 slides, the T ₁ side pinch roller means 9
In the portion of the lever 39 facing the arm portion 39a of the lever 39, the concave portion 19f of the mode select lever 19 is provided with the T ₂ pinch roller lever 4
The protrusion 19 of the trigger lever 19 is located at a position facing the arm 40a of 0.
h is located. Therefore, T ₂ - Changing the tape mode to the continuous mode from the stopped state at the REV in cycle playback mode automatically becomes FOR state, then press the play lever 37, the operation of the T ₁ side (FOR) . The second
FOR in the T ₂ -cycle playback mode shown in FIG.
When selecting the continuous mode from the state, the mode select lever 19 is slid in the C direction as described above. The pin 19o formed on the mode select lever 19 is the second switching lever 36.
Rotate in the F direction to move the second program interlocking lever 33 to B.
Slide in the direction. However, in the FOR state, since the program switching lever 29 has already slid in the A direction and the second program interlocking lever 33 has also slid in the A direction, even if the second program interlocking lever 33 slides in the B direction. , 1st program interlocking lever 22 pin
22e cannot be pressed. Therefore, the program switching cam gear 25 does not rotate and the program switching is not performed. That is, the FOR state is maintained.

(2) When editing mode is selected As shown in FIG. 5 (a), the positioning pin 19c of the mode select lever 19 faces the recess 20c of the mode setting plate 20 in the REV state in the T ₂ continuous playback mode. . To select the edit mode from the stopped state in this state (the state where the subchassis 51 is retracted in the C direction in FIG. 7B), the positioning pin 19 of the mode select lever 19 is selected.
The mode select lever 19 is slid in the D direction so that c is engaged with the recess 20d of the mode setting plate. At this time, the pin 19p formed on the mode select lever 19 presses the arm portion 35b of the first switching lever 35, causing the first switching lever 35 to move to the shaft 29f.
Rotate in the E direction with the fulcrum as the fulcrum
The pin 33a formed on the 33 is pressed in the B direction. The second program interlocking lever 33 slides in the B direction and pushes the pin 22e that is in contact with the tip of the second program interlocking lever 33 to slide the first program interlocking lever 22 in the B direction. Along with this, the second
The program interlocking lever 33 presses the power switch 56 to turn on the rotary drive source. First program interlocking lever 22
The pin 22d formed on the arm is the arm 24c of the cam lock lever 24.
Is pulled, the cam lock lever is rotated in the F direction about the shaft 24a as a fulcrum, and the engagement with the projection 25b formed on the program switching cam lever 25 is released. The program switching cam gear 25 meshes with the gear 26 and rotates 180 degrees in the F direction, and the program switching cam 28 moves the program switching lever 29 to the arm 29 of the program switching lever 29.
By pressing a, the program switching lever 29 is slid in the A direction as shown in FIG. 6 (a). As the program switching lever 29 slides, the pinch operation levers 52 and 53 rotate in the F direction, and the corresponding pins 52a and 53a are urged by the end faces 29h and 29i of the program switching lever 29, respectively.
It becomes a state. On the other hand, as the mode select lever 19 slides, as shown in FIG. 6 (b), a recessed portion 19j is formed at a position facing the arm portion 39a of the T ₁ side pinch roller lever 39, and a concave portion 19 ₂
A concave portion 1 is provided at a position facing the arm portion 40a of the side pinch roller 40.
9i is located. Therefore, RE in T ₂ continuous playback mode
When the tape mode is changed from the stopped state in the V state to the edit mode, the FOR state is automatically set, and when the play lever and the recording lever are pressed next, both T ₁ and T ₂ are in the FOR action. In addition, FO in the T ₂ continuous playback mode shown in FIG.
When selecting the edit mode from the R state,
Slide the mode select lever 19 in the D direction. The pin 19p formed on the mode select lever 19 rotates the switching lever 35 in the E direction, and the second program interlocking lever 33
Slide in the B direction. However, as in the case of switching to the continuous mode, since the program switching lever 29 and the second program interlocking lever 33 that were in the FOR state have already slid in the A direction, the second program interlocking lever
Even if 33 slides in the B direction, the pin 22e of the first program interlocking lever 22 is not pressed and the program is not switched. That is, the FOR state is maintained.

〔The invention's effect〕

As described above, the automatic inversion switching device of the multiple tape recorder according to the present invention is configured to continuously reproduce both cassette tapes in a continuous mode, and to reproduce one cassette tape and reproduce its reproduction signal from the other cassette tape. Is switched to a plurality of mode positions including an edit mode for recording by the slide operation, and the first and second pinch roller means can be pressed against the forward side capstan shaft and pressed against the forward side capstan shaft in accordance with each mode position. A sub-chassis equipped with a mode select lever for switching to and a magnetic head corresponding to both cassette tapes, and moving forward with the operation of the play lever to bring each magnetic head into contact with the first and second cassette tapes; Provided on the sub-chassis corresponding to the first and second pinch roller means,
Corresponding to the first pinch operation lever that acts to press the first and second pinch roller means to the forward side capstan shaft with the advance of the subchassis, and the third pinch roller means on the subchassis. A second pinch operation lever, which is provided on the reverse side of the capstan shaft and presses the third pinch roller means with the forward movement of the sub-chassis, and the first and second pinch operation levers by sliding operation. A state in which the first pinch operation lever is arranged in the operating position and the second pinch operation lever is arranged in the retracted position from the operating position, and the first pinch operating lever is arranged in the retracted position and the second pinch operating lever is in the operating position. It includes a program switching lever for switching to the arranged state and a cam in contact with the program switching lever. A switching driving means for sliding the program switch lever, the second pinch operation lever 3
In the state in which it is in the operating position with respect to the pinch roller means, there is provided a switching starting means for starting the switching driving means in response to the mode select lever being slid to the continuous mode position or the edit mode position.

As a result, when the continuous mode or the edit mode is selected by the mode select lever in the state in which the pinch roller means can be pressed against the reverse side capstan shaft via the cassette tape, the forward side capstan shaft is inserted via the cassette tape. It is possible to automatically switch the pinch roller means to a state in which the pinch roller means can be pressed.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 (a) is a structural diagram of the tape recorder section in the continuous mode, and FIG. 1 (b) is a pinch showing a stopped state in the continuous mode. mechanism diagram of the roller unit, figure (c) is mechanism diagram of the pinch roller portion illustrating a driving state in the continuous mode, Fig. 2 (a) is T ₂ - tape recorder of the fOR condition in the cycle mode mechanism diagram, FIG. (b) is T ₂ - mechanism diagram of the pinch roller portion of the fOR condition in the cycle mode, the FIG. 3 (a) is T ₂ - tape recorder of the REV state in the cycle mode mechanism configuration diagram of FIG. (b) is T ₂ - mechanism diagram of the pinch roller portion of the REV state in the cycle mode, the FIG. 4 (a) is a tape recorder of the fOR condition in T ₂ continuous mode Mechanism configuration diagram, same figure (B) the mechanism diagram of the pinch roller portion of the FOR condition in T ₂ Continuous mode, FIG. 5 (a) mechanism configuration view of a tape recorder of the REV states in T ₂ Continuous mode, FIG. (B) Is a mechanical configuration diagram of the pinch roller part in the REV state in the T ₂ continuous mode,
FIG. 6 (a) is a mechanical block diagram of the tape recorder section in the edit mode, FIG. 6 (b) is a mechanical block diagram of the pinch roller section in the edit mode, and FIG. 7 is a schematic view of a main part of the dual tape recorder. is there. 6 is a third pinch roller means, 8 is a second pinch roller means, 9 is a first pinch roller means, 10 is a mode select lever, 19o and 19p are pins (switch activation means), 22
Is a first program interlocking lever (switch activation means), 24 is a cam lock lever (switch activation means), 25 is a program switching cam gear (switch activation means), 25b is a protrusion (switch activation means), and 26 is a gear (switch drive means). ), 28 is a program switching cam (switching driving means), 29 is a program switching lever, 29f and 29g are axes (switching starting means), 33 is a second program interlocking lever (switching starting means), and 35 is a first switching lever ( Switching start means), 36 is a second switch lever (switch start means), 45 is a FOR side capstan shaft, 47 is a REV side capstan shaft, 56 is a power switch (switch start means), and 60 is a program interlocking lever. Means, 61 is a play means.

Claims (1)

[Claims] 1. A first cassette tape and a second cassette tape are stacked and stored in a single tape storage portion, and one capstan shaft and the first cassette tape that are commonly used for the forward running of both cassette tapes. One capstan shaft used for running the reverse side of the second cassette tape is provided respectively, and the first and second pinch pins are provided on the forward side capstan shaft through the first and second cassette tapes. The roller means is selectively brought into pressure contact with the third pinch roller means on the reverse side capstan shaft via the second cassette tape, whereby the first cassette tape and the second cassette tape are moved in a predetermined direction. In a double tape recorder that runs at a constant speed independently or simultaneously, both cassette tapes are sequentially and continuously It is switched by slide operation to multiple mode positions including continuous mode for playing back, and edit mode for playing one cassette tape and recording the playback signal on the other cassette tape, depending on each mode position. A mode select lever for switching the first and second pinch roller means to a press-contact enable state and a press-contact preventing state with respect to the forward side capstan shaft, and a magnetic head corresponding to both cassette tapes are mounted.
Moves forward with the operation of the play lever to move each magnetic head to the first position.
And a sub-chassis to be brought into contact with the second cassette tape, and the first and second pinch rollers provided on the sub-chassis in correspondence with the first and second pinch roller means. A first pinch operating lever which acts to press the means to the forward side capstan shaft, and a third pinch roller means provided on the sub chassis corresponding to the third pinch roller means. The second pinch operation lever, which acts to press the roller means to the reverse side capstan shaft, and the first and second pinch operation levers by the sliding operation, the first pinch operation lever being placed in the operation position, the second pinch operation lever When the lever is arranged in the retracted position from the above-mentioned operating position and the first pinch operation lever is arranged in the retracted position, the second pinch operation lever is operated. A program switching lever for switching to a state of being arranged in a position, a cam in contact with the program switching lever, a switching drive means for sliding the program switching lever by rotation of the cam, and the second pinch operation lever. Switch activation means for activating the switching drive means in response to the mode select lever being slid to the continuous mode position or the edit mode position in a state in which the switch is in the operating position for the third pinch roller means. Automatic reversing switching device for a dual tape recorder.