JPH0227435Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a tape counter actuating device for a tape recorder, which is equipped with first and second tape drive mechanisms and is generally referred to as a double cassette tape recorder. . (b) Prior Art A double cassette tape recorder, which has two tape drive mechanisms in the same device and is intended for dubbing from one tape to another, is extremely useful in today's audio personalization world. . In this case, it is theoretically possible to make both the first tape drive mechanism and the second tape drive mechanism capable of recording and playback;
Incorporating functions such as simultaneous recording, continuous recording, and alternate dubbing would make operations very complicated and increase costs, so in reality, the first tape drive mechanism is used only for playback, and the second tape drive mechanism is used for recording (or recording playback). It is common that Also, although this type of tape recorder is equipped with a tape counter, there are few that are equipped with a tape counter on both the first tape drive mechanism and the second tape drive mechanism, and generally the second tape drive mechanism is equipped with a tape counter. Many tape counters are provided only on the tape drive mechanism side. The reason for this is that if tape counters are provided in the first and second tape drive mechanisms, the numbers displayed on each counter will not match when dubbing from the first tape to the second tape. That is, during dubbing, the winding diameters of the first tape on the playback side and the second tape on the recording side are often different, which causes the rotational speed of the reel shaft to be different. Secondly, there is an increase in cost and an increase in the load on the mechanism drive torque, and in reality, a tape counter is provided only on the side of the second tape drive mechanism for recording, which is frequently used. Therefore, there is no tape counter on the side of the first tape drive mechanism for playback, which is inconvenient when playing back the first tape. (c) Purpose of the invention The present invention solves the problems of conventional tape recorders, and includes a common tape counter for the first tape drive mechanism for playback and the second tape drive mechanism for recording. The object of the present invention is to allow the single tape counter to selectively perform counter operations for the first tape and the second tape driven by the first and second tape drive mechanisms. (d) Structure of the invention In order to achieve the above object, the present invention comprises a first tape drive mechanism for at least reproducing a first tape, a second tape drive mechanism for at least recording a second tape, and a second tape drive mechanism for at least recording a second tape. In a tape recorder in which tape drive mechanisms can be operated independently or simultaneously, a common tape counter is provided for each of the tape drive mechanisms,
a first transmission means for transmitting rotation of the first tape drive mechanism to the tape counter; and a first transmission means for transmitting rotation of the first tape drive mechanism to the tape counter;
a second transmission means for transmitting the rotation of the tape drive mechanism to the tape counter; and a second transmission means for cutting off the transmission operation of the first transmission means to the tape counter when the operation means of the second tape drive mechanism is operated. and a selection mechanism for operating a tape counter by the means. (E) Embodiments Below, embodiments of the device of the present invention shown in the drawings will be described. 1 is a first tape drive mechanism for at least reproducing the tape in the first cassette 2;
The mechanism 1 has a rewind lever 4, a fast forward lever 5, a pause lever 6, and a stop lever 7 in addition to the playback lever 3, and has a supply reel shaft 8 and a take-up reel shaft 9. Reference numerals 10 and 11 are a reproduction head and a pinch roller, which are simply illustrated. 12 is the second
A second tape drive mechanism for at least recording the tape in the cassette 13, which mechanism 12 includes a rewind lever 1 in addition to the recording lever 14.
5. It has a fast forward lever 16, a playback lever 17, a pause lever 18, and a stop lever 19, and has a supply reel shaft 20 and a take-up reel shaft 21. 2
2, 23, 24 are simplified erase heads;
These are a recording/playback head and a pinch roller. 25 is a tape counter in which a number wheel 29 is rotated by a gear 28 provided on a shaft 27 of a first rotation input pulley 26;
It is provided facing the display window 31 of. 32 is a reset button. Reference numeral 33 denotes a selection mechanism, which includes a support plate 35 whose central portion is supported by a support shaft 34 and rotates as a seesaw, a spring 36 that constantly urges the support plate 35 to rotate clockwise, and a selection mechanism on the left and right sides of the support plate 35. Planted support shaft 37
The support plate 35 includes a first rotation output pulley 39 and a second rotation output pulley 40 which are rotatably provided at the support plate 35 and 38, and an F-shaped cam surface 41 is formed at the right end of the support plate 35. What is important here is that the tape counter 25
A friction clutch plate 26' is provided on the lower surface of the first rotation input pulley 26, and a second rotation input pulley 43 is rotatably provided on a support shaft 44 via a belt 42 from the first rotation input pulley 26.
This second rotational input pulley 43 is also provided with a friction clutch plate 43' on its lower surface, while a friction clutch plate 39' is provided on the upper surface of the first rotational output pulley 39 on the support plate 35. A friction clutch plate 40' is also provided on the upper surface of the output pulley 40. The first rotation input pulley 26 and the first rotation output pulley 39 face each other vertically, and the second rotation input pulley 43 and the second rotation output pulley 40
are arranged vertically facing each other. The first rotation output pulley 39 is connected to the belt 45 from the take-up reel shaft 9 of the first tape drive mechanism 1.
The rotational force is transmitted to the second rotational output pulley 40 from the take-up reel shaft 21 of the second tape drive mechanism 12 via a belt 46. 47, 48, 49 are the recording lever 14 and the rewinding lever 15 on the second tape drive mechanism 12 side.
and an operating protrusion provided at the tip of the fast-forwarding lever 16, which faces below the cam surface 41 of the support plate 35, as shown in FIG. Therefore, when one of the operating protrusions engages with the cam surface 41 as shown in FIG. 5, the support plate 35 is rotated counterclockwise against the spring 36 as shown in FIG. . What is important here is that the operating protrusion and the support plate 3
When the cam surface 41 of No. 5 is not engaged, that is, the second
When the recording, rewind, and fast forward levers on the tape drive mechanism 12 side are not operated, the first rotational output pulley 3 is rotated against the friction clutch plate 26' of the first rotational input pulley 26 of the tape counter 25 .
The friction clutch plate 39' of 9 is connected to transmit the rotation of the take-up reel shaft 9 of the first tape drive mechanism 1 to the tape counter 25 , and also controls the recording, rewind and fast forward levers of the second tape drive mechanism 12 . When either of them is operated, the support plate 35 seesaws and simultaneously separates the friction clutch plate 39' of the first rotation output pulley 39 from the friction clutch plate 26' of the first rotation input pulley 26. , the friction clutch plate 40' of the second rotation output pulley 40 is joined to the friction clutch plate 43' of the second rotation input pulley 43, so that the rotation tape counter of the take-up reel shaft 21 of the second tape drive mechanism 12 is connected to the friction clutch plate 43' of the second rotation input pulley 43. 25 . Since the apparatus of the present invention is constructed as described above, when the second tape drive mechanism 12 is in a stopped state and the first tape drive mechanism 1 is in an independent playback operation state, the take-up reel shaft 9 rotates. is transmitted to the tape counter 25 via the first rotation output pulley 39 and the first rotation input pulley 26, and at this time, the tape counter 25 performs a counting operation for the first tape. Next, when the first tape drive mechanism 1 is in a stopped state and the second tape drive mechanism 12 is in, for example, a recording operation state, the rotation of the take-up reel shaft 21 is caused by the rotation of the second rotation output pulley 40 and the second rotation input pulley 43. , belt 42, first rotation input pulley 26
At this time, the tape counter 25 performs a counting operation for the second tape. Further, in a dubbing state in which the first tape drive mechanism 1 is in a playback operation and the second tape drive mechanism 12 is in a recording operation at the same time, the tape counter 25 performs a counting operation for the second tape according to the operation of the second tape drive mechanism. do. (f) Effects of the invention As mentioned above, the device of the present invention can perform both the tape count display operation of the first tape drive mechanism and the second tape drive mechanism with one tape counter, and at the same time, it is particularly suitable for recording. Since this can be prioritized and displayed as a count in the operation of the second tape drive mechanism, the right to use the tape counter can be established during recording operation, and a tape counter can be provided separately for each tape drive mechanism. Compared to conventional tape counters, only one tape counter is required, and at the same time, it is more convenient to use and more practical.

[Brief explanation of the drawing]

The figures show the device of the present invention, with the first figure being a plan view and the second figure being a plan view.
3 and 3 are front views in different states, FIG. 4 is a side view, and FIG. 5 is a side view illustrating the operation of the main parts. 1 ...First tape drive mechanism, 12 ...Second tape drive mechanism, 25 ...Tape counter, 26, 39...First rotation input pulley and first rotation output pulley as first transmission means, 4
3, 40... Second rotation input pulley and second rotation output pulley as second transmission means, 33 ... Selection mechanism.

Claims (1)

[Scope of utility model registration request] a first tape drive mechanism that performs at least a playback operation on the first tape; and a second tape drive mechanism that performs at least a recording operation on the second tape;
In a tape recorder in which each tape drive mechanism is operable independently or simultaneously, a common tape counter is provided for each of the tape drive mechanisms, and a first transmission transmits rotation of the first tape drive mechanism to the tape counter. means and
a second transmission means for transmitting rotation of the second tape drive mechanism to the tape counter;
A tape comprising a selection mechanism that cuts off the transmission operation of the first transmission means to the tape counter and simultaneously operates the tape counter by the second transmission means when the operation means of the tape drive mechanism is operated. Recorder tape counter operating device.