JPH03102668A - Double cassette tape recorder - Google Patents

Abstract

PURPOSE:To prevent no-load running of a driving part of a back side cassette by stopping driving the back side cassette in moving a detecting member correspondingly when a cassette is not housed in a back side cassette holding part. CONSTITUTION:The back side cassette holding part is movably provided with the detecting member 4 for detecting whether a cassette 2 is housed in the back side cassette holding part. When the cassette 2 is not housed in the back side cassette holding part, at the time of changing a recording or reproducing mode of a front side cassette 1 over to a recording or reproducing mode of the back side cassette 2, the operation mode of the side of the back side cassette tape should be changed for a stop mode in interlocking with the above changeover by moving the detecting member 4. Consequently, in the case of continuous reproducing performed from the front side cassette 1, the stopping state is effective if the back side cassette 2 is shifted to be reproduced. By this method, the no-load running of the driving part of the back side cassette 2 is infeasible.

Description

[Detailed Description of the Invention] (a) Industrial Application Field This invention relates to a double cassette tape recorder,
More specifically, the present invention relates to a double cassette tape recorder in which two cassettes are housed and held (inserted and placed) coaxially with each other and record or playback operations are performed on each.

(B) Prior Art In the double cassette type tape recorder as described above, two cassette holding portions are provided on a lid body generally referred to as a cassette lid, and a cassette can be stored and held in each of these portions.

Then, when the cassette lid is in the open state, the user inserts or removes the cassette. Also, when the cassette lid is closed, playback is performed rather than recording.

The front side surface of this cassette lid is usually formed from a transparent member, so that when a cassette is stored in the front side cassette holder, the presence of the cassette can be determined. Further, the front cassette holding section and the rear cassette holding section are also made of transparent material. Therefore, if a cassette is not stored in the front cassette holder and a cassette is stored in the rear cassette holder, the cassette is only on the back side when the lid is closed. It can be determined that it is stored.

(C) Problems to be Solved by the Invention However, when a cassette is stored in the front cassette holding section, whether or not there is a cassette on the back side can be determined if the lid is in the closed state. I can't.

Therefore, if a cassette is stored in the front cassette holding part and no cassette is inserted in the back cassette holding part, if the user accidentally operates the back cassette, the take-up reel stand will It continues to rotate (normally, it detects whether or not the take-up reel base is rotating and activates an auto-stop).

Therefore, the driving part of the depth cassette does not enter the stop mode and continues to run idly until the user notices it.

(2) Means for Solving the Problems and Their Effects The present invention includes two cassette holders, one on the front side and the other on the rear side, and each of the two cassettes is housed and held coaxially with each other in these cassette holders. In a double cassette type tape recorder, when recording or playback of the front cassette is finished, the recording or playback is automatically performed on the rear cassette. A detection member is provided that detects the accompanying movement, and when a cassette is not stored in the rear cassette holding section, the corresponding movement of the detection member causes the drive of the actual measurement cassette to be stopped in conjunction with the automatic switching. This is a double cassette type tape recorder.

That is, in the double cassette type tape recorder according to the present invention, a detection member for detecting whether or not a cassette is stored is movably provided in the deep cassette holding section. When no cassette is stored in the back cassette holding section, when switching from the front cassette's recording or playback mode to the back cassette's recording or playback mode, the detection member is moved to interlock with the switching operation. to stop the operation of the back cassette tape 6
This is an attempt to switch to H.

In this way, if there is no cassette stored in the rear cassette holder and you perform continuous playback from the front cassette, even if you try to play the rear cassette, it will stop and the driving part of the rear cassette will stop. There is no idling, and there is no risk of wasting electricity.

Furthermore, from another point of view, the present invention includes a detection member that detects whether or not a cassette is stored in the rear cassette holder by movement as the cassette is stored, and a detection member that is located at a location that cannot be seen from the outside of the tape recorder. A warning lamp is provided, a lamp person/off switch and a switch operation part for operating the switch in conjunction with the movement of the detection member are provided near the detection member, and the cassette is stored in the rear cassette holding part. When there is no cassette, the corresponding movement of the detection member causes the drive of the rear cassette to be stopped in conjunction with the automatic switching, and the switch is turned on.

If a cassette is not stored in the rear cassette holder and an attempt is made to continuously record or play from the front cassette, the operation will be blocked and a lamp will light up to prevent erroneous operation. That's what I do.

(e) Examples The present invention will now be described in detail based on two examples shown in the drawings. Note that this invention is not limited to these.

Embodiment 1 In FIG. 6, the cassette is inserted into the front cassette holding part (not shown) and the back OII 1 cassette holding part (not shown) formed in the cassette M (not shown), and the cassette lid is closed. has been completed.

Hereinafter, the cassette holding section on the front side will be referred to as T1, and the cassette holding section on the back side will be referred to as T.

I is a cassette stored and held in T, 2'' is a cassette stored and held in T, 3 is a chassis, 4 is a cassette detection lever of T, 5 is a detection lever biasing spring, and 6 is a slide lever. .

FIG. 6 shows T. ,T. This shows that there are cassettes on both sides. Figure 7 shows that only the TI has a cassette, and the T. indicates that there is no cassette.

T. The cassette detection lever 4 is rotatable around a support shaft 4a inserted into the chassis bending piece support hole. The detection lever is biased counterclockwise by a detection lever biasing spring 5. When there is no cassette on the T2 side, the arrangement is as shown in FIG. 7 due to a regulating section (not shown).

When the cassette 2 is on the T side, the cassette 2 presses the T and cassette detection lever 4 in the direction of arrow A. Then, the detection lever rotates clockwise against the biasing spring 5 as shown in FIG. The slide lever 6 is biased in the direction of protruding toward the front side of the paper by a play action spring 7 (shown in FIG. 1), which will be described later.

If there is a cassette 2 in T, as shown in FIG.
The cassette detection lever 4 rotates clockwise, and the slide lever 6 contacts the arm 4b of the cassette detection lever 4.
a comes into contact and its movement is blocked. Further, if there is no cassette at the T, the T and cassette detection lever 4 does not rotate as shown in FIG. Therefore, the abutment 6a of the slide lever 6 does not come into contact with the arm 4b of the cassette detection lever 4, and the slide lever 6 can be displaced in the direction in which it pops out on the surface of the paper.

Figure l is 'r. ,T. Both indicate when the machine is in the stopped and prone position.

Figure 2 shows T, . There is a cassette at T, and T1 is in the playing state and T2 is in the stopped state.

FIG. 3 shows a transition from the state shown in FIG. 2 to T, the playback state. Figure 4 shows T. There is a cassette in T. This indicates that there is no cassette at , and T, is in the playing state and T, or is in the stopped state. FIG. 5 shows the case where both T and Tt transition from the state shown in FIG. 4 to a stopped state.

In each figure, 8 is a brake lever, 9 is a play lever spring, 10 is a lock plate, 11 is a lock plate spring,
12 is a mode change lever. 13 is a click spring, 14 is a steel ball, 15 is a tape end operating lever, 16 is a tape end operating lever spring, 17 is a tape end cam, and 18 is a cam operating lever.

The play lever 8 is provided with long holes 8b, 8b. It is then guided by pins 3c and 3c installed in the steering wheel 3, and can move back in the directions of arrows A and B:
E-stop rings (not shown) are placed in grooves (not shown) provided in the bottles 3c, 3c, respectively, to prevent the bottles from floating upward.

Further, a play lever spring 9 is applied to the play lever 8, and is always biased in the direction of arrow B. A play button 8a is fitted into one end of the play lever 8. By pressing the play button 8a in the direction of arrow A, the user will play the cassettes stored and held in TI and T. Of course, the brake lever 8 is engaged with a head (not shown) or a mounted head plate (not shown), and when the brake lever 8 moves in the eight direction of the arrow, the head is inserted into the cassette half window and the cassette is opened. will be played.

The lock plate lO is provided with elongated holes 10a and loa. It is guided by pins 3d, 3d implanted in the chassis 3, and can reciprocate in the directions of arrows C and D.

Pin 3d. E-stop rings (not shown) are respectively placed in the grooves (not shown) provided in 3d to prevent them from floating upward. Further, the lock plate lO is biased in the direction of arrow D by a temporary lock spring 11.

When the play button 8a is pushed in the direction of the arrow A, the bottle 8C installed on the brake lever 8 moves to the slope 10 of the temporary lock 10.
b. The lock plate IO then moves in the direction of arrow C, and eventually the pin 8C engages with the engaging portion 10c of the lock plate 10, and the play lever 8 is locked.

The slide lever 6 is provided with long holes 6d, 6d. The slide lever 6 is a pin 3b implanted in the chassis 3.
, 3b, and can reciprocate in the directions of arrows C and D. Grooves provided in pins 3b, 3b (not shown)
An E-stop ring (not shown) is placed on each of them to prevent them from floating upward.

The play action spring 7 is a torsion spring. The first arm is attached to the bent piece notch 6e of the slide lever 6, and the second arm is attached to the bent piece notch 8 of the play lever 8.
d, respectively, and constantly move the slide lever 6 in the direction of arrow C. If there is no cassette on the T side, the slide lever 6 is movable in the direction of arrow C.

In this state, the brake lever 8 is moved in the eight directions of the arrow. Then, although the contact portion 6d of the slide lever 6 and the bent piece 8e of the play lever 8 were in contact with each other and could not be moved, the slope 6f of the slide lever 6 is now in contact with the bent piece 8e of the play lever 8. They come into sliding contact, and the slide lever 6 moves in the direction of arrow C by the biasing force of the play action spring 7.

The mode change lever i2 is provided with elongated holes 12a, 12a. And pin 3 planted in chassis 3
e. It is guided by 3e and can reciprocate in the directions of arrows A and B. E-stop rings (not shown) are respectively placed in grooves (not shown) provided in the bottles 3e and 3e to prevent them from floating upward.

On the chassis 3, a U-shaped cutout 3f is located at the notch 1'<12b of the mode change lever l2. It is provided to the right of l2c. A compression spring 13 is inserted inside the protrusion 3f, and a steel ball 14 is inserted between the compression spring 13 and the notch 12b.

When the mode change lever l2 is pushed in the direction of arrow A', the adjusting ball l4 engages with the notch 12c with a click feeling due to the pressing force of the compression spring l3.

When pushed in the opposite direction from this state, the steel ball l4 engages with the notch 12b with a similar click feeling.

When the sea bream ball l4 is engaged with the notch portion 12b, the mode change lever 12 is moved by the T. The play drive member (pinch roller brake idler) is driven as the play lever 8 moves in the eight directions of the arrows. On the other hand, when the sea bream ball l4 is engaged with the notch 12c, the mode change lever l2 is set to move the play drive member (pinch roller play idler) in the direction of the arrow A of the play lever 8. Let me drive along with you.

A mode change button (not shown) is fitted into a part of the mode change lever [2. By moving the mode change button in the eight arrow directions or in the B direction, the user can select reproduction of the T, side or the T, side.

In the stop mode and the TI playback mode, the bent piece 6b of the slide lever 6 is in the mode change lever/<-
12, and the slide lever 6 is movable in the direction of arrow C.

T! In the playback mode, the side surface 12e of the change lever [2] faces the bent piece 6b of the slide lever 6, and as shown in FIG. 3, there is almost no gap between the two, and the slide lever 6 cannot move in the direction of arrow A. becomes.

The tape end operation lever l5 is integrally formed with a bottle l5a in the direction of protruding toward the front side of the paper and a pin 15b in the direction of protruding towards the back side of the paper at the same position on one side of the tape. A pin 15b is inserted into a long hole 3g provided in the chassis 3, and an E-stop ring is placed in a groove provided in the bottle 15b to prevent it from lifting up.

The tape end operation lever l5 has a bin 15b with a long hole 3g.
It can reciprocate in the directions of arrows A and B along the arrows A and B, and since it is supported at one point, it can rotate parallel to the plane of the chassis 3. A tape end operating spring l6 is applied to the tape end operating lever l5. Then, it is biased counterclockwise in the direction of arrow B, and is brought into the state shown in FIG. 1 by a regulating piece (not shown).

When the bent piece 6c of the slide lever 6 faces the side surface 15c of the tape end operation lever I5 and the slide lever 6 rotates in the direction of arrow C, the slide lever 6 can rotate clockwise. Tape end operation lever l5
is rotating clockwise, the protrusion l5e of the tape end operation lever l5 is connected to the protrusion 1 of the mode change lever 12.
It faces 2f. Tape end operation lever! 5 moves in the eight direction of the arrow, the mode change lever l2 is moved in the direction of the arrow A.

The tape end cam l7 is rotatable around a bin 3h provided on the chassis 3. And the take-up reel stand (
When the rotation of the take-up reel stand (not shown) stops, the winding is stopped using a known technique (for example, a rocking body that swings as the take-up reel stand rotates, and a rotating body that constantly rotates regardless of the take-up reel stand). When the rotation of the reel stand stops, the rocking motion of the rocking body stops, the rocking body is displaced to a position where it is not rocking, and the tape end cam t7 rotates slightly. energized. Then, the tape end cam l7 has missing teeth (not shown).
The tape end cam 17 is engaged with a constantly rotating body (not shown) that was facing the tape end cam 17 (the opposed state of the toothless portion is released), and the tape end cam 17 rotates, for example, clockwise.

The cam operating lever l8 is connected to the bin 3L provided on the chassis 3.
It can be rotated around. The first arm 18a on the right side is pressed against the pin 15a of the tape end operation lever l5 and urged clockwise.

The second arm +8b is in contact with the eccentric cam surface of the tape end cam l7.

The lock release lever 19 is rotatable around a pin 3j provided on the chassis 3. It is biased counterclockwise by a spring (not shown). The t-th arm 19a is in contact with the bent portion 10d of the lock plate 0.

When the tape end operation lever I5 rotates clockwise by a predetermined angle and is about to move in the direction of arrow A, the tape end operation lever! A teardrop-shaped protrusion 15d provided on the lock release lever 19 engages with a notch 19b provided in the second arm of the lock release lever 19. Lock release lever l9
rotates counterclockwise, and the first arm 19a or lock plate lO
The bent piece 10d provided at the right end of the holder is pressed and moved in the direction of arrow C.

The operation of this invention will be explained below.

Figure 2 shows T1. This shows that there is a cassette at Tt and T, is being played. The fact that T is in the playback state means that the play lever 8 moves in the eight directions of the arrow and is locked by the lock plate 10. At this time, the position of the mode change lever l2 is the steel ball [4 is the mode change lever! It is in a state where it is facing the notch 12b of No. 2. Also, since there is a cassette at T,
The slide lever 6 is moved by the arrow C by the cassette detection lever 4.
moving in the direction. Therefore, tape end operation lever 1
5 does not rotate clockwise. The protrusion 12f of the mode change lever l2 and the protrusion [5e] of the tape end operation lever 15 are opposed to each other.

In this state, playback is performed.

In FIG. 3, the tape end cam t7 rotates clockwise as the tape reaches its end. Since the cam actuating lever 18 is in contact with the center cam Ii, the cam actuating lever l8 rotates counterclockwise around the pin 3i of the shank 3.

And the bottle of tape end operation lever 15! ．． 5a is pressed, and the tape end operation lever l5 moves in the direction of arrow A.

This movement causes the protrusion 1 of the tape end operation lever L5 to
5e presses the protruding piece 12e of the mode change lever I2. And the mode change lever! 2 moves in the direction of arrow A, and the lock between the steel ball l4 and the notch l2b is released. The steel ball 14 is newly locked in the notch 12c, thereby releasing the regeneration drive member of T1, and
The regeneration driving member of T is driven, and T is in the regeneration state.

In FIG. 4, the brake lever 8 is pushed in the direction of arrow A and locked with the lock [10]. Since the T side is in the reproducing state, the adjustment ball 14 faces the notch 1112b of the mode changer)<-12.

Since there is no cassette on the T side, the T cassette detection lever 4 does not block the movement of the slide lever 6.
The slide lever 6 is movable in the direction of arrow C. Since the play lever 8 is moving in the eight directions of the arrow, the slide lever 6 is moved in the direction of the arrow C.

Then, the bent piece 6c of the slide lever 6 presses the side surface 15c of the tape end operation lever l5. The tape end operating lever l5 moves clockwise against the biasing force of the tape end operating lever spring I6. and,
Tsurou 15, who looks like a tearful man, is on the tape end operation lever l5
d rotates until it faces the notch 19b of the lock release lever [9]. In addition, the protrusion 1 of the mode change lever I2
2f and tape end operation lever! The opposing shape of the protruding piece 15e of No. 5 is unraveled. While maintaining this state, playback is performed.

In FIG. 5, the tape end cam I7 rotates clockwise as the tape reaches its end. Then, the eccentric cam of the tape end cam 17 causes the cam operating lever l to
8 rotates counterclockwise around the bin 31 of the chassis 3. The cam operating lever l8 presses the pin 15a of the tape end operating lever [5], and the tape end operating lever l5 moves in the direction of arrow A.

At this time, the protruding piece l2f of the mode change lever l2 and the protruding piece t5a of the tape end operation lever 15 are not opposed to each other. Therefore, since the mode change lever l2 is not pushed up in the direction of arrow A, the T mode is not selected. In addition, a tear mark-shaped protrusion 15 on the tape end operation lever l5
dh<opposed to the notch 19b of the lock release lever l9.

Therefore, the tape end operation lever 15 presses the lock release lever I9, and the lock release lever 19
It rotates counterclockwise around the upper pin 3j. and,
The first arm 19a of the lock release lever l9 is the temporary lock IO
Press the bent piece 1''Od.

Lock temporary spring [l]
0 moves in the direction of arrow C. As the lock plate {0 moves in the direction of arrow C, the lock plate engaging portion lOC and the play lever 8
is unlocked from the pin 8c, and the play lever 8 is moved in the direction of arrow B by the load of the play lever spring 9, returning to the state shown in FIG.

Naturally, as the play lever 8 moves in the direction of arrow B, the slide lever 6 moves in the direction of arrow D.

The movement of the slide lever 6 in the direction of arrow D causes the tape end operation lever 15 to move counterclockwise. The eccentric cam continues to rotate and stops when the eccentric cam is placed vertically so that the surface with the least amount of eccentricity faces the second arm 8b of the cam operating lever I8.

This one? As a result, the cam operating lever l8 rotates clockwise, and the tape end operating lever I5 moves in the direction of arrow B. The lock release lever [9, which does not take this action, rotates clockwise and moves in the direction of arrow D from the lock plate IO. Therefore, all the parts are in the state shown in FIG. 1, that is, in the stop mode.

Embodiment 2 In FIG. 8, the T-cassette detection lever 4 is provided with a protrusion 4c as a switch operating section. This protrusion 4c is positioned so as to face the switch 20 fixed to the switch 3.

The switch 20 is wired as shown in FIG.
When the switch 20 is closed, a warning lamp 2, which is provided on the tape recorder and is visibly arranged, is activated via the power supply 22.
l lights up.

As shown in FIG. 8, if the cassette 2 is on the T side, the protrusion 4C of the T cassette detection lever 4 does not come into contact with the switch 20, and the lamp 2 does not light up.

When there is no cassette on the T side, the projection 4C of the T cassette detection lever 4 presses the switch 20 due to the biasing force of the detection lever biasing spring 5 as shown in FIG. 9, and the lamp 2l is turned on.

(f) Effect of invention According to the present invention, the following remarkable effects are achieved.

As described above, by changing the position of the cassette detection lever depending on whether or not there is a cassette on the T side, when a cassette is on the T side and playback is performed using the T1 measurement, the T1 When the end of the tape is reached, T, stops playing as if it were recording and becomes a stop state. At the same time, the T8 side starts recording or reproducing without any problem.

On the other hand, when there is no cassette on the Tt side, the T. When recording or playing back on the side, T1 stops recording or playing when the tape ends, and T1 simply stops recording or playing back.
, side from entering the recording/playback state.

Therefore, if the user forgets to insert the cassette into the T side,
1-T, then perform the continuous operation T, →ST
Become OP. As a result, there is no risk of wasting power by running idle for hours in the drive state. For example, if the power source is a dry cell battery, wasteful use of the dry cell battery can be prevented.

Furthermore, by changing the position of the cassette detection lever depending on whether or not there is a cassette on the T side, the switch is opened and closed, and when there is no cassette on the T side, a lamp lights up, allowing the T position to be detected early. , it is possible to prevent erroneous operations by notifying you if you have forgotten to store or hold the cassette on the side.

[Brief explanation of drawings]

1 to 7 show an embodiment of the invention. That is, FIG. 1 is an enlarged plan view of the main part showing the stop state, FIG. 2 is an enlarged plan view of the main part showing the T1 cassette playback state when a T and cassette is present, and FIG. , Main part enlarged plan view showing transition to cassette playback, 4th
The figure shows T and T without a cassette. Fig. 5 is an enlarged plan view of main parts showing the transition from the state shown in Fig. 4 to the stopped state, Fig. 6 shows T, T when there is a cassette, and cassette detection lever. Figure 7 is an enlarged plan view of the main parts showing the movement of T, T when there is no cassette,
FIG. 3 is an enlarged plan view of a main part showing movement of a cassette detection lever. 8 to 10 show a second embodiment of the present invention. That is, Fig. 8 is an enlarged plan view of the main part showing the movement of T, cassette detection lever and switch when there is a cassette, and Fig. 9 is an enlarged plan view of the main part showing the movement of T, cassette detection lever and switch when there is no cassette. FIG. 10 is a circuit diagram of a warning lamp. l...T. Cassette stored and held (inserted and placed) on the side, 2...T, cassette stored and held (inserted and placed) on the side, 4...T, cassette detection lever (detection member ),
4c...Protruding part (switch operation part), 20...
...Switch, 2■...Warning lamp. Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] 1. Two cassette holding parts on the front side and the back side,
A double cassette tape recorder that stores and holds two cassettes coaxially with each other in these cassette holders, and when the front cassette finishes recording and playing, it automatically switches to recording or playing back the rear cassette. , a detection member is provided in the back cassette holder to detect whether or not a cassette is stored by movement as the cassette is stored, and when a cassette is not stored in the back cassette holder, the corresponding detection member is A double cassette type tape recorder characterized in that, upon movement, the driving of the rear cassette is stopped in conjunction with the automatic switching described above. 2. Equipped with two cassette holders, one on the front side and one on the back side.
A double cassette tape recorder that stores and holds two cassettes coaxially with each other in these cassette holders, and when the front cassette finishes recording and playing, it automatically switches to recording or playing back the rear cassette. A detection member is provided in the rear cassette holding section to detect whether or not the cassette is stored by movement as the cassette is stored, and a warning lamp is provided at a location visible from the outside of the tape recorder, and a warning lamp is provided in a location visible from the outside of the tape recorder. is provided with a lamp on/off switch and a switch operation part that operates the switch in conjunction with the movement of the detection member,
When a cassette is not stored in the back cassette holding section, the drive of the back cassette is stopped in conjunction with the automatic switching by a corresponding movement of the detection member;
A double cassette type tape recorder characterized in that the above-mentioned switch is turned on and operated.