JPS5814347A - Tape recorder - Google Patents

Abstract

PURPOSE:To obtain a tape recorder which is in the two-motor system and has the characteristic equivalent to that of the three-motor system requiring no solenoid, by using one motor for reproducing and using the other for fast-forwarding, rewinding, and operation switching. CONSTITUTION:If a reproducing switch or the like is operated when a take-up reel 3 is driven through the first motor 9 and a tape is forwarded fast, the motor 9 is reversed and turned, and an arm 10 is turned clockwise by a shaking mechanism, and a gear 12 bites a rack 13b of a control rod 13, and the control plate 13 rises to stop the motor 9 through a switch, and a head substrate 21 disengaged from a pin 13e of the control plate 13 is moved, and thus, the reproducing through the second motor 27 is performed. The rewinding is performed simiraly, and the motor for fast-forwarding and rewinding power is used for operation switching also, and thus, a small-sized tape recorder of the two-motor system which does not require solenoids and has the characteristic equivalent to that of the three-motor system is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder in which tape running can be electrically controlled. In recent years, many electrically controllable tape recorders have been commercialized because they are easier to operate than conventional mechanical operation button type tape recorders. This is difficult to implement in tape recorders because solenoids cannot be used due to power consumption.

Ta. Currently, there are two types of devices that can be electrically controlled without using a solenoid: The first type uses three motors, each with dedicated motors for playback, fast forward/rewind, and operation switching.1. Requires three expensive motors;
There were disadvantages such as the space required for each unit made it difficult to downsize.

The second type uses two motors, and a dedicated motor is used for tape running and operation switching. This is because the tape running motor is used to feed the tape in both forward and nine reverse directions, which can cause deterioration in motor performance, and because it is also necessary to obtain power for fast forwarding and rewinding from the capstan motor. The power of The disadvantage is that the amount increases compared to the data type.

The present invention does not use a solenoid, and the first motor is used only for regeneration, realizing a regeneration state with low power consumption equivalent to the conventional three-motor system, and the second motor is used for fast forwarding and rewinding. The present invention attempts to realize a tape recorder with cost and space equivalent to that of the conventional two-motor system by using the two-motor system as well as for switching operations.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the fast forwarding state of the tape recorder of this embodiment. On the board 1 is a capstan 2. A first reel stand 3, a second reel stand 4, and an intermediate gear 6 are rotatably supported. The intermediate gear 6 is a pulley 6 and a shaft 7 on the back side of the board 1.
The pulley 6 is connected to the pulley 9a of the first motor 9 by a belt 8. A lever 10 is rotatably supported around a shaft 7, and a first two-stage gear 11 and a second two-stage gear 12 are rotatably supported at both ends of the lever 10 and mesh with the intermediate gear 6. The gear 11 is lightly braked by a weak compression spring (not shown). The first reel stand 3 and the second reel stand 4 have gear parts 31L and 41L, respectively, which face the first two-stage gear 11, and in the fast-forward state shown in FIG. The stage gear 11 and the gear portion 3a of the first reel stand 3 are meshed with each other. The control rod 13 is connected to the substrate 1
It is guided so as to be slidable back and forth (up and down in the drawing) by the upper supports 11L and 1b. There is a shaped hole in the center of the control rod 13, and a part of it has a straight gear, that is, a rack 131L, 13b. The small gear portions 111L and 121L of the first and second two-stage gears 11.12 pass through the irregularly shaped hole 6b 7 of the control rod 13 and face the racks 131L and 13b.

One end 130 of the control rod 13 is connected to the switch 1 on the board 1.
4, 16, 16, and 17, and in the state shown in FIG. 1, the switches 14 and 15 are pressed at the 130 section.

The lever 18 is rotatably supported by the support 10 on the board,
A tension spring 19 is connected between one end of the /<-18 and the substrate 1.
is applied, energizing Renocou 18 counterclockwise. A roller 181L is rotatably supported at the other end of the control rod 13.
o (having slopes a and c and a recess),
The control rod 13 is stably fixed. Leno(-20 is rotatably supported by the column 1d on the board 1, and the pin 201L at one end of the lever 20 engages with the elongated hole 1311 of the control rod 13, and the other end of the lever 20 is pin 20
There is b. The head board 21 is connected to the supports 1, 1f on the board 1.
, 1g so as to be slidable back and forth (up and down in the drawing), and a tension spring 22 is applied between the board 1 and the head board 21, and the head board 21 is moved forward (upward in the drawing). Appendix 6.

It is strong. A magnetic head 23° pinch roller 24 is attached on the head substrate 21. Note that in the state shown in FIG.
・It is regulated by A flywheel 26 is integrated with the capstan 2 and connected to a pulley 27L of a second motor 27 by a belt 26. Note that the cassette tape 28 is installed as shown in the figure.

FIG. 2 shows an outline of the control circuit of the embodiment shown in FIG. The circuit 29 is a storage circuit using a flip-flop or the like, and the playback switch 30. Rewind switch 31. Fast forward switch 32. Stop switch 33 is connected to input terminal 291
L, 29b, 290, 2911, respectively, and output terminals 296.29f, 29g.

29h are input terminals 291L, 29b,
The output is generated in accordance with 296.2911. The circuit 34 is a switch circuit that switches between rotation and stop of the second motor 27, and is configured to rotate the second motor 27 counterclockwise only during a period when a command is given to the input 341L. Circuit 36! is the first motor 97, .

A switch circuit that switches between clockwise and counterclockwise rotation and stop rotates the first motor 9 clockwise only while there is a command at the input 36&, and rotates the first motor 9 counterclockwise only when there is a command at the input 36b. It is designed to rotate clockwise. Note that the switches 14, 16, 16, and 17 are the switches on the board 1 described above.

Next, the operation of the above embodiment will be explained. The state shown in FIGS. 1 and 2 is a state after the fast-forward switch 32 has been operated, and since there is an output at the output terminal 29g, a command is input to the input ssb of the circuit 35. Therefore, the first motor 9 rotates counterclockwise. Therefore, the intermediate gear 6 similarly rotates counterclockwise, and the gear 11 is rotated to the first position by a known swinging mechanism.
Since it comes into contact with the gear part 3a of the reel stand 3 and rotates, it is in a fast-forward state. Now, when the stop switch 33 is operated in this state, the output from the output terminal 29g disappears, and the rotation of the first motor 9 is also stopped. Although an output is generated at the output terminal 29h, since the switch 14 is closed, the input terminal 35b of the circuit 36 is stopped, resulting in a stopped state.

Next, when the playback switch 30 is operated, an output is generated at the output terminal 29el corresponding to the input 291L of the circuit 29. At this time, the switch 16 is open, but since the switch 16 is closed, a command is input to the input 361L of the circuit 36, and the first motor 9 rotates clockwise. At the same time, a command is also input to the input 341L of the circuit 34, so the second motor 27 rotates counterclockwise. Since the first motor 9 rotates clockwise, the swing mechanism also rotates the arm 1° clockwise, but the small gear portion 121L of the second two-stage gear 12 on the arm 1o
It meshes with b. Therefore, the rotation of the first motor 9 is transmitted to the intermediate gear 6, the second two-stage gear 12° small gear portion 12a, and the rack 13b, and moves the control rod 13 forward (upward in the drawing). FIG. 3 shows this state. If the control rod 13 continues to move further, the control □
When the rod end 13C' is pressed, the companion switch 16 is released and the output no longer enters the input terminal 361L of the circuit 36, so that the first motor 9 stops rotating. This state is shown in FIG. The control rod 13 is stopped at a stable position by the pressing force of the roller 18 against the recess. As a result, the pin 13 on the control rod 13 that was regulating the head board 21
・ moves forward (upward in the drawing), the head board 21 moves forward (upward in the drawing) by the action of the tension spring 22, and the pinch roller 24 moves the tape (not shown) to the capster/2. This causes the tape to run. A magnetic head 23 also contacts the tape. In this state, the first reel stand 3 winds up the tape by the rotational force of the second motor 27 through a suitable friction mechanism using known means. This state, shown in FIG. 4, is the reproducing state.

Next, the operation switching from this state to the rewinding state will be explained. When the rewind switch 31 is operated, the output from the output terminal 2e disappears, so the 10th, -, and +2 motors 27 are stopped. Further, since an output is generated at the output terminal 2ef, a command is input to the input 351k of the circuit 36, so that the first motor rotates clockwise again. This further moves the control rod 13 further forward (upward in the drawing) from the position shown in FIG. and finally the 6th
It will be in the state shown in the figure.

The control rod 13 is stably held by the pressing force of the roller 181L against the slope C. Also, rack 1sb and small gear 1
Since the pressing force of the rollers 18& is already acting on the inclined portion of the control rod 13 when the engagement of the rollers 2& disengages, the control rod 13 moves by itself for a certain distance due to the pressing force of the rollers 18L. In the state shown in FIG. 6, the small gear 121L is removed from the rack 13b that regulates the swing, so the arm 10 further rotates clockwise, and the gear 11 engages with the gear portion 4a of the second reel stand 4. , the rotation of the first motor 9 is transmitted to the second reel stand 4.

At the same time, the pin 20b at the end of the lever 20 is
Move the RAD board 21 backward (downward in the drawing) 11.

It is held at the stop position, which is the same as in fast forward mode.

Next, the transition from this state to the fast forward state will be explained.

When the fast forward switch 32 is operated and an output is generated at the output terminal 29g, a command is input to the input terminal asb of the circuit a6, so the first motor 9 rotates counterclockwise. As the first motor e rotates counterclockwise, the arm 1
o also rotates counterclockwise. As a result, the small gear 111L of the first two-stage gear 11 is now engaged with the rack 131L of the control rod 13, and the control rod 13 is moved rearward (downward in the drawing). This state is shown in FIG. At this time, a state similar to the playback state shown in FIG. 4 is reached, but since the second motor 27 is stopped at this time, the tape is I won't send it out.

Further, the control rod 13 moves rearward (downward in the drawing), and finally reaches the state shown in FIG. 1, that is, the fast-forward state.

Next, the transition from the playback state to the stop state will be explained.

When the stop switch 33 in FIG. 2 is operated from the playback state shown in FIG. 4, an output is generated at the output terminal 29h.

Since both the switch 14 and the switch 17 are open in the state shown in FIG.
b, the first motor 9 rotates counterclockwise. Since the first motor 9 rotates counterclockwise, the arm 1o also rotates counterclockwise, and the small gear 11& of the first two-stage gear 11 meshes with the rack 13& of the control rod 13, causing the control rod 13 to move backward. (downward on the drawing). As the control rod 13 moves, the switch 14 is closed. When the switch 14 is closed, the output of the output terminal 29h in FIG. 2 is grounded and the input s of the circuit 36 is
Commands to sb stop. This causes the first motor 9 to stop rotating. At this time, the control rod 13 is in the first position.
The position is the same as the fast-forward state shown in the figure, and the head substrate 21 is thereby also brought to the position shown in FIG. 1 and in a stopped state. At this time, in the reproducing state, the output from the output terminal 29, which had an output, disappears, and the command from the input 341L of the circuit 34 disappears, so that 13/<- of the second motor 27.

Rotation also stops.

As described above, the tape recorder of the present invention includes a magnetic head,
A control member that controls the position of a pinch roller, etc., a first motor rotatable in a first direction and a second direction, a second motor that rotationally drives a capstan, and first and second reels. , the control member includes a first . It has second and third stable positions, and in the first and third stable positions, the bottom of the magnetic spatula, the pinch roller, etc. are in a stopped state, and the second
When the control member is at the stable position, the magnetic head, the pinch roller, etc. are positioned in a reproducing state, and when the control member is at the first stable position, the first motor is rotated in a first direction. When the motor is rotated, the rotation of the motor is transmitted to the first reel, and when the first motor is rotated in a second direction, the rotational force of the motor moves the member from the first stable position to the second stable position. position, and then move it to the third position.
The first motor 14 is moved to a stable position, and then the rotation of the first motor is transmitted to the second reel, so the first motor 14 is moved without using a solenoid.

- A two-motor system with one motor and a second motor dedicated to playback can realize a high-performance mechanism with low power consumption equivalent to the conventional three-motor system. Compared to the one-tameter system, one expensive motor is not required, and the space required is also reduced, making it possible to provide a compact electrically controllable tape recorder, which has great industrial potential.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a tape recorder in a fast forward state according to an embodiment of the present invention, FIG. 2 is a circuit diagram showing a control circuit of the tape recorder, and FIG. 3 is a plan view showing the tape recorder in a fast forward state. FIG. 4 is a plan view showing the playback state; FIG. 6 is a plan view showing the rewinding state; FIG. 6 is from the rewinding state to the fast forwarding state; It is a top view which shows the state in the middle of a transition. 1... Board, 2... Capstan, 3
...First reel stand, 4...Second reel stand, e...1b motor, 13 Control loft, 21 Head 167, - board, 23. ...Magnetic head, 24...
Pinch roller, 100... Corrugated part. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 3 Figure 4

Claims (1)

[Claims] a control member that controls the positions of the magnetic head, the pinch roller, etc.; a first motor rotatable in a first direction and a second direction; a second motor that rotationally drives the capstan; 2 reels, and the control member has a first reel. Second
and a third stable position, in which the magnetic head, pinch roller, etc. are placed in a stopped state in the first and third stable positions, and the position of the magnetic head, pinch roller, etc. is reproduced in the second stable position. and rotating the first motor in a first direction when the control member is in a first stable position transmits rotation of the motor to a first reel; rotating the first motor in a second direction 6 and moving the control member from the first stable position to the second stable position and then to the third stable position by the rotational force of the motor; A tape recorder characterized in that the tape recorder is configured such that the rotation of the first motor is transmitted to the second reel.