JPS6314354A - Operation mode selecting and switching device for tape recorder - Google Patents

Abstract

PURPOSE:To contrive to attain the small size, light weight and low cost for a tape recorder by devising the titled device that the start of driven member by a cam in response to each operation mode depending on the solenoid and the specific operation is selected among the operations by the drive of the driven member by the cam. CONSTITUTION:In a tape recorder having the fast feeding, reverse fast feed, program switching and ejecting operations, one solenoid 1 controlled and activated in response to the operation selecting each operation and a rotating body 3 driven while the stopper 2 is released by the start of operation of the solenoid are provided. Further, cams 9, 10, 8, 4 of the same number as that of each operation and having different drive start time of the driven members 5, 6 depending on each operation are provided to the rotating body 3 and the start of the driven member of the same cam depending on each operation is guided. The specific operation is selected among the operations in response to the operation of the solenoid 1 is selected. Thus, a compact and inexpensive tape recorder is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for selecting and switching an operating mode such as fast forwarding from a stopped state or an operating state of a tape recorder.

[Conventional technology]

The tape recorder is capable of switching between fast forward (FF), rewind, reverse fast forward (RWD) operation modes, and playback and recording operation modes. (EJEC again)
T) There is also a mechanism called a mechanism that ejects the cassette tape bag from within the bag number using built-in power.

For example, when the fast forward mode is selected, as shown in FIG. The rotation is then transmitted from the gear 13 through the gear 20, the reel shaft 21 rotates, and the tape 23 is wound from the reel 26 to the reel 25. At this time, the pinch roller 31. 32 and the magnetic head 33 are scratched from the tape 23 so as not to interfere with high-speed running.

When the reverse fast forward mode is selected, as shown in FIG. 10, the driven member 5 rotates in the direction of arrow x2 from the position shown by the chain line, and the gear 12 meshes with the idler gear 15. Then, the rotation is transmitted from the gear 15 to the gear 16 and the gear 27, the reel shaft 28 rotates, and the tape 23 is transferred from the reel 25 to the reel 2.
It is rolled up to 6.

When the playback (or recording) operation mode is selected, the driven member 5 is retracted by the link, and as shown in FIG.
The driven member 17 to which the gear 14 (having fewer teeth than the gear 12) is attached advances and the gear 14 meshes with the gear 13. At the same time, the pinch roller 31 and the magnetic head 33 advance and come into contact with the tape 23. As a result, the tape 23 runs at a constant speed and is wound from the reel 26 to the reel 25 while being played back (or recorded). Assuming that the above case is the regeneration of the A side, in the case of the regeneration of the 8th side, the rotating member 17 is rotated as shown by the dotted line, the gear 14 is engaged with the idler gear 15, and at the same time the pinch roller 31 is retreated, and the pinch roller 31 is retracted. roller 3
2 advances and contacts the tape 23.

Also, when the eject mechanism operates,
The lever 65 rotates counterclockwise about the sleeve 66 from the position shown in FIG. The rotational drive is transmitted in the order of gear 68 → gear 67 → gear 69 → cam gear 70. The rotation of the cam gear 70 causes the cam 72 to push the roller 75. As shown in the side view of FIG. 12(b), the roller 75 is pivotally supported by an eject lever 76, and the eject lever 76 moves in the direction of the arrow. The tip 76a of the eject lever 76 pushes the roller 78 that is pivotally supported by the link plate 80, and
rotates counterclockwise around the shaft 81. Puncture holders 82 and 83 are fixed to the link plate 80 to support the cassette tape pack 85, and the cassette tape pack 85 is ejected to the position indicated by the chain line.

Conventionally, when selecting an operating mode such as fast forward or rewind, or operating an eject mechanism, a number of solenoids are provided according to the operating mode, and the operating mode is switched by activating each solenoid. . For example, in order to operate the eject mechanism shown in FIG. 12, a solenoid (not shown) is engaged with the lever 65, and the solenoid is suctioned to rotate the ejector 8-65.

[Problem that the invention seeks to solve]

Conventional devices for selecting and switching operating modes in tape recorders require a number of solenoids depending on the operating mode, which hinders reductions in size, weight, and cost.

The present invention has been made to solve these problems and provides an operation mode selection switching device for obtaining a compact and inexpensive tape recorder.

[Means for solving problems]

The configuration of an operation mode selection switching device for a tape recorder to which the present invention is applied in order to solve the above problems will be explained with reference to FIG. 1 corresponding to an embodiment.

As shown in the figure, the tape recorder operation mode selection switching device to which the present invention is applied selects each of the above operations in a cheap record that has at least a fast forward operation, a reverse fast forward operation, a program switching operation, and an eject a mechanism operation. It has one solenoid 1 that is controlled and activated according to the operation, and a rotating body 3 that rotates after the stopper 2 is released when the solenoid starts operating. Cams 9, 10, 8φ4 that are the same in number and have different driven start times for the driven members 5 and 6 according to each operation.
is provided, and the operation of the solenoid 1 induces the driven member of the cam to start following in accordance with each of the above-mentioned operations, and the cam 9.
A specific operation can be selected from among the above-mentioned operations by following the driven members 5 and 6 of 10-8 and 4.

[Effect]

The start of the driven member 5 or 6 of the cam 9, 10, 8, or 4 according to each operation mode is induced by the operation of the solenoid l at a time corresponding to each operation mode. . Therefore, one solenoid 1
The drive transmission means 12 or 18, 19 for each operation mode can be switched by simply controlling the operating time of the drive transmission means 12 or 18/19. The operation selected from among the fast forward operation, reverse fast forward operation, program switching operation, and eject mechanism operation starts.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an operation mode selection and switching device for a tape recorder according to the present invention will be described in detail.

FIG. 1 is a front view of a main part of an operation mode selection and switching device for a tape recorder to which the present invention is applied. The device shown in the figure is a device that selects and switches between fast forward (FF) mode, reverse fast forward (RWD) mode, PRG mode, and EJECT mode (see Figure 2).
"mode" is an abbreviation for program switching mode, in which the running direction of the tape is reversed (from side A to side B, etc.) during playback.
or from side B to side A).

FIG. 1 shows a neutral (neutral) state of operation.

In the figure, 1 is a solenoid, 3 is a rotating body, 5 is a first driven member, 6 is a second driven member, 7 is a rotating body driving gear connected to a motor M, 11. 12 is a positioning bar connected to the second driven member 6; 12 is a reel drive gear connected to the motor M; 18 is a positioning bar connected to the second driven member 6;
19 is a program switching link member, and 19 is an ejecting link member.

In the illustrated state where the pin 42 is implanted in the plunger 41 of the solenoid 1 (when the solenoid 1 is not suctioning), the pin 42 and the second driven member 6 are slightly apart,
Although it does not prevent the driven member 6 from rotating counterclockwise, when the solenoid 1 is attracted, it engages the driven member 6 and causes it to rotate clockwise.

An embodiment of a circuit for controlling and driving the solenoid 1 is shown in FIG. 2, and includes switches FF and RWD for selecting each mode.
, PRG, and EJECT, and a switch OFF that stops fast forwarding or reverse fast forwarding. When each switch is pressed, the timer circuit 40 outputs on signals at different timings. The switching transistor Q is turned on by the on signal, and the driving voltage V is applied to the solenoid 1. is applied.

The details of the rotating body 3 are as shown in the top perspective view (a), side view (b), and bottom perspective view (C) in FIG.
On the upper surface of the zero-rotating body 3 whose rotation center is , the side surface is an intermittent gear, a cam 8, a cam 41 rotation guide part 47, a first stopper protrusion 43 and a second stopper protrusion 44 protruding from the guide part 47, A first pin 48 and a second pin 49 are each fixedly provided. Further, a cam 9 and a cam 10 are provided on the lower surface.

The cam surface of the cam 8 is 8a, the cam surface of the cam 4 is 4a, the cam surface of the cam 9 is 9a, and the cam surface of the cam 10 is 10a. The interval pitch between the first intermittent portion 3a and the second intermittent portion 3b of the gear is equal to the first stopper protrusion 43 and the second stopper protrusion 44.
The interval pitch is adjusted to match the pitch. Also, the first pin 48 and the second pin 48
The same applies to the pitch of the pins 49. In the neutral state, the first intermittent portion 3a faces the drive gear 7, as shown in FIG. Further, a spring 50 attached to the chassis is engaged with the first pin 48, and urges the rotating body 3 to rotate in the counterclockwise direction.

The first driven member 5 is supported by a shaft 51 and has a spring 5.
2, and this state is stable. Driven member 5
A protrusion 53 is fixedly provided opposite to the lower surface of the rotating body 3. One end of the driven member 5 has a convex shape, and the positioning bar 11 is engaged with the tip portion 54 in the neutral state. Further, a reel drive gear 12 is pivotally supported on the first driven member 5, and when the driven member 5 rotates, it meshes with a gear 13 on the forward rotation reel side or a gear 16 on the reverse rotation reel side via an idler gear 15. ing.

The second driven member 6 is supported by a shaft 58 and has a spring 5.
9 to rotate counterclockwise. A stopper pin 2 is implanted in the driven member 6 and contacts the first stopper protrusion 43 of the rotating body 3 to stop the rotation of the driven member 6, and the rotating body is urged to rotate by a spring 50. 3 is stopped.

The positioning bar 11 is rotatably connected to the second driven member 6 by a sleeve 60.
A spring 61 is attached between the opening angle and the opening angle shown in the figure is a stable state, but it is possible to open the opening further. A roller 62 is attached to the tip of positioning/<-11,
It engages with the tip portion 54 of the driven member 5.

The program switching link member 18 is located on the rotation locus of the second driven member 6, and is pushed when the driven member 6 rotates significantly in the clockwise direction. The link member 18 includes a driven member 17 to which the gear 14 is attached, and a pinch roller 31.
, pinch roller 32 and magnetic head 33 (11th UA
(see) by a link mechanism (not shown).

The ejecting link member 19 is located on the opposite side of the program switching link member 18 and is pushed when the second driven member 6 rotates counterclockwise. And link member 1
9 is a rotating lever 65 of the eject mechanism shown in FIG.
is engaged in.

The operation of the above-mentioned operation mode selection switching device for a tape recorder will be explained.

(Fast forward (FF) operation) To select fast forward operation, press the switch FF shown in Figure 2.
When the button is pressed, an ON signal is output from the timer circuit 40, and the solenoid 1 sucks the amount shown by FF in the time chart of FIG. When the solenoid 1 is attracted from the neutral state 5S (Fig. 1), it is pulled by the operation pin 42, the second driven member 6 rotates clockwise, the stopper pin 2 is disengaged from the first stopper protrusion 43, and the spring is released. The rotating body °3 rotates slightly with an urging force of 50°. Then, the first intermittent portion 3a of the rotating body 3 moves and the gear portion meshes with the driving gear 7, and the rotating body 3 moves approximately 27° until the second intermittent portion 3b opposes the driving gear 7.
00 rotations and stops. When the rotation starts, the suction of the solenoid 1 stops, and at about 45 degrees during the rotation, the cam surface 9a of the cam 9 reaches the protrusion 53 of the first driven member 5, the cam 9 pushes the protrusion 53, and the driven member 5 starts clockwise. Start rotating in the rotation direction. Since the rotating body 3 continues to rotate, the driven member 5 continues to rotate by the cam 9, and when the state changes from the chain line shown in FIG. 5 to the solid line shown in FIG. do. At this time, the roller 62 of the positioning bar 11 and the tip end portion 54 of the first driven member 5 are disengaged, and the second driven member 6 and the positioning bar 11 are rotated counterclockwise by being pulled by the spring 59. The roller 62 is in the middle part 5
5.

The rotating body 3 continues to rotate and stops until the second intermittent portion 3b faces the drive gear 7, that is, until the second stopper protrusion 44 engages with the stopper pin 2 of the driven member 6. The operation mode shown in FIG. 9 continues in this state during the fast-forward period.

(Reverse fast forward (RWD) operation) To select reverse fast forward operation, press switch RW in Fig. 2.
When D is pressed, the ON signal from the timer circuit 40 causes the solenoid 1 to suck the amount shown by RWD in FIG. Similar to the fast forwarding operation, the reverse fast forwarding operation also starts from a neutral state, and the series of operations is also substantially the same as the fast forwarding operation. However, since the time when the solenoid 1 is sucked is different, the cams that perform effective work are different. Theory II will focus on the differences.

During one rotation of the rotating body 3, the first driven member 5 is once rotated clockwise by the cam 9 so that the recess 55 faces the roller 62, but the solenoid 1 is under suction and the second driven member 6 Since the positioning bar 11 rotates clockwise, it does not engage. After the rotating body 3 rotates further and the cam 9 passes the protrusion 53 of the first driven member 5, the solenoid 1 is sucked. When the rotation body 3 stops, the second driven member 6 returns counterclockwise, the roller 62 returns to the tip portion 55, and the rotation of the zero-rotating body 3 continues until the cam surface 10a of the cam 10 reaches the protrusion 53, and the cam 10 Pushing the protrusion 53 causes the driven member 5 to rotate counterclockwise. When the chain line in FIG. 6 changes to the solid line, the drive gear 12 changes to the idler gear 1.
5 and starts reverse fast forwarding operation. At this time, the positioning bar 11 is rotated counterclockwise by being pulled by the spring 59, and the rotor 2 engages with the intermediate portion 56.
The rotation continues until the second stopper protrusion 44 engages with the stopper pin 2 and then stops. The operation mode shown in FIG. 10 continues in this state during the reverse fast forwarding period.

(Stop (OFF) operation) To stop the fast forward operation (or reverse fast forward operation), press the switch OFF in Fig. 2.
In response to the ON signal from the timer circuit 40, the solenoid l is sucked. During the fast forward operation, the stopper pin 2 of the second driven member 6 engages with the second stopper protrusion 44, the spring 50 engages with the second pin 49, and the second intermittent portion 3b engages with the drive gear 7.
is facing. Since the solenoid 1 is attracted from this state, the driven member 6 rotates clockwise, the stopper pin 2 and the second stopper protrusion 44 are disengaged, and the rotating body 3 is rotated by the biasing force of the spring 50. The gear portion meshes with the drive gear 7 and continues to rotate. While the solenoid 1 is attracting the amount indicated by OFF in FIG. 4, the driven member 6 maintains a rotated state, and the pin 2 is guided between the cams 4 and 8. When the suction of the solenoid l stops here, the rotating body 3 rotates along the outer surface 4b of the cam 4 with the pin 2 until the first intermittent portion 3a faces the drive gear 7, that is, the first stopper protrusion 43 reaches the stopper. It continues to rotate until it engages with pin 2 and then stops. This returns everything to a neutral state.

During this stopping operation, the cam surface 9a, cam 10a, cam surface 8a
Alternatively, since there is no work by the cam surface 4a, the reel drive gear 12 can be stopped without inducing other operations such as meshing with the gears 13 and 15.
Can move to playback operation.

(Program (PRG) operation) When selecting the program switching operation, press the switch PRG shown in FIG. In response to the ON signal from the timer circuit 40, the solenoid l draws in the amount shown by PRG in FIG. When suction is applied, the pin 2 comes off from the first stopper protrusion, and the spring 5
The rotating body 3, which is biased by the zero rotation via the first pin 48, rotates, and the gear portion meshes with the drive gear 7, and the rotating body 3 rotates. In the middle of the zero rotation, the cam 9 moves the driven member 5 in the clockwise direction. After the cam lO rotates the driven member 5 in the counterclockwise direction, the first driven member 5 is in the same state as the neutral state (
The state returns to state 8) where the gear 12 is not engaged. The cam surface 8a of the cam 8 reaches the pin 2 of the second driven member 6, and the cam surface 8a reaches the pin 2 of the second driven member 6.
a pushes the pin 2, and the driven member 6 begins to rotate clockwise. Immediately after this, the solenoid 1 finishes suction and the plunger 41 returns, but the second driven member 6 continues to rotate and the seventh
As shown in the figure, push and move the program switching link member 18.

As shown by the solid line in FIG. 10, if the above program switching operation is performed while the gear 14 is engaged with the gear 13 and the pinch roller 31 is advanced to play back side A, then the link member 18 Due to the movement, the driven member 17 rotates in the direction shown by the chain line, and the gear 14 meshes with the gear 15.
The pinch roller 32 advances and comes into contact with the tape 23. That is, reproduction of side B, indicated by the dotted line in the figure, is started. Conversely, if the above program switching operation is performed while the B side shown by the dotted line in the figure is being played, the link member 18
Due to this movement, the driven member 17 rotates in the direction shown by the solid line, the gear 14 meshes with the gear 13, the pinch roller 31 advances, and the reproduction of side A is started.

As shown in FIG. 7, after the pin 2 is pushed by the cam surface 8a and moves the link member 18, the rotating body 3 further rotates. The pin 2 follows the outer surface of the cam 8, and then along the outer surface 4b of the cam 4, and the driven member 6 returns. Just before hitting the stopper protrusion 43, the intermittent portion 3a faces the drive gear 7, and the rotation of the rotating body 3 is stopped. In other words, it returns to a neutral state.

(EJECT Operation) When performing an eject operation, it starts from the neutral state shown in FIG. When the switch EJECT shown in Fig. 2 is pressed, the ON signal from the timer circuit 40 turns on the solenoid l to EJECT shown in Fig. 4.
Aspirate twice as shown on CT.

When the first suction starts, the pin 2 is removed from the first stopper protrusion 43, and the rotating body 3, which is biased by the spring 50 through the first pin 48, rotates slightly, and the gear part of the rotating body 3 is connected to the drive gear 7. The cam 9 rotates the driven member 5 clockwise in the middle of the 0 rotation when the rotating body 3 starts rotating.
Next, after the cam 10 rotates the driven member 5 in the counterclockwise direction, the first driven member 5 returns to the same state as the neutral state (the state in which the gear 12 is not engaged), and the rotation of the zero rotating body 3 continues.
When the solenoid 1 finishes suction before the cam surface 8a of the cam 8 reaches the bottle 2 of the second driven member 6, the bottle 2 moves along the rotation guide portion 47. Then, when the second intermittent portion 3b faces the drive gear 7, that is, immediately before the second stopper protrusion 44 hits the stopper bin 2, the solenoid 1 performs the second suction. As a result, the bottle 2 is moved to the second stopper protrusion 43.
, the rotating body 3 urged by the spring 50 via the second pin 49 rotates, the gear portion meshes with the drive gear 7, and the rotating body 3 starts rotating. At this time, the solenoid 1 immediately stops suction and the second driven member 6 returns. bottle 2
is pushed by the cam surface 4a of the rotating cam 4, and the driven member 6 begins to rotate counterclockwise. At this time, as shown in FIG. 8, the positioning bar 11 is in contact with the tip end portion 54 of the first driven member 5, but since the angle between the positioning bar 11 and the driven member 6 is open about the shaft 60, the driven member 6 is When the zero-rotator 3 rotates unhindered and pushes the ejecting link member 19, and the tip of the cam surface 4a passes,
The bottle 2 comes into contact with the cam surface 47a of the rotation guide portion 47 and is pushed up, and the driven member 6 rotates clockwise. 1st
Just before hitting the stopper projection 43, the intermittent portion 3a faces the drive gear 7, and the rotation of the rotating body 3 is stopped. In other words, it returns to a neutral state.

When the eject operation link member 19 is pushed and moved as described above, the eject mechanism shown in FIG. 12 operates, and the cassette tape pack 85 is ejected from the position shown by the solid line to the position shown by the chain line.

In the above embodiment, an independent timer circuit 40 is used to control the operating time of the solenoid 1, but it is also possible to use a shared microcomputer for controlling other devices.

〔Effect of the invention〕

As described above, the tape recorder operation mode selection switching device to which the present invention is applied can switch the drive transmission means for each operation mode by simply controlling the operation of one solenoid. Therefore, since a large number of solenoids are not required, a tape recorder using this device is extremely compact and inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a front view of main parts of an embodiment of an operation mode selection switching device for a tape recorder to which the present invention is applied, Fig. 2 is a diagram showing an embodiment of a circuit for controlling and driving a solenoid, and Fig. 3 is a diagram of a rotating body. Detailed drawings, FIG. 4 are diagrams explaining the relationship between the solenoid time chart and the rotation angle of the rotating body, FIGS. Each figure is a diagram explaining each operation mode of the tape recorder. 1. Solenoid 3348 Rotating body 511. First driven member 6 Second driven member 799. Rotating body drive gear 4/8/9 bow 011. Cam 11, Positioning bar 12, Fast forward drive gear 13, Forward reel side gear 14, Regeneration drive gear 15, Idler gear 16, Reverse reel side gear 17, Followed member 18 Program switching link member 19 Eject operation link member 40 Timer circuit FF , Rapid traverse RWD, , Reverse rapid traverse P
RG,,,, Program OF F,,,, Stop EJECT Eject

Claims (1)

[Claims] 1. In a tape recorder having at least a fast-forward operation, a reverse fast-forward operation, a program switching operation, and an eject mechanism operation, a solenoid that is controlled and activated according to the operation for selecting each operation, and the activation of the solenoid. a rotating body that rotates when the stopper is released by the solenoid; the rotating body is provided with cams having the same number of cams as the number of the respective operations and having different driven start times of the driven members according to the respective operations; An operation mode selection switching device in which a driven member of the cam is induced to start following according to each of the operations, and a specific operation can be selected from among the operations by the driven movement of the driven member of the cam.