JP2548139B2 - Tape recorder - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape recorder that fast-forwards and rewinds according to the rotation direction of a motor.

2. Description of the Related Art In recent years, while tape recorders have been miniaturized, mechanisms using a solenoid or a motor to provide a light operating feeling have been increasing. Considering downsizing and cost reduction, we would like to operate with fewer solenoids and motors. Therefore, when the mechanism is stopped, fast-forwarding or rewinding is performed in response to the normal / reverse rotation of the motor, and when the motor is stopped, the three modes are possible only by driving the motor. This can be done by inserting a simple friction mechanism into the fast-forwarding and unwinding idler, but there is a problem in combining the solenoid and the intermittent gear.

The direction of rotation of the motor in which the intermittent gear operates (hereinafter referred to as the forward rotation direction) and the opposite direction (hereinafter referred to as the reverse direction)
When the solenoid is in the operating state before the rewinding etc. is operated, the intermittent gear tries to bite from the toothless part, but the motor is reversing, so it does not mesh and a rattling noise is heard. Will continue. Therefore, conventionally, in order to detect this state, an electromagnet operation detection switch is provided, and when this switch is turned on, the motor is stopped or normally rotated to return to the initial state.

Problems to be Solved by the Invention In the above configuration, since the operating force of the solenoid is used as the operating force of the switch, the actual operation of the solenoid is reduced. In addition, the cost and space of the switch are also disadvantageous for ultra-miniaturization.

SUMMARY OF THE INVENTION In view of the above problems, the present invention aims to provide an electronically operated tape recorder that eliminates the abnormal noise of an intermittent gear without providing a switch, is low-cost, space-saving, and has no malfunction.

Means for Solving the Problems In order to solve the above problems, a tape recorder according to the present invention includes a motor that is driven to rotate in the normal direction and a reverse direction, and is rotated in a certain direction by the motor so that at least a stopped state and other conditions are satisfied. A rotating body having a cam and an intermittent gear that determines the operating mode of the operating state, a solenoid that controls the operation of this rotating body, and a tape running corresponding to each by forward or reverse driving of the motor while the rotating body is stopped. It is equipped with a tape running mechanism that operates, and a control circuit that controls the normal rotation and reversal of the rotating body and the motor, and drives the motor from the stopped state to the normal rotation direction and the reverse direction of the rotating body. When the operation mode that corresponds to the motor reversal of the tape running operation is entered, the control circuit controls so that the rotating body is always operated to return to the stopped state before entering. It is configured so that

Action According to the present invention, even if the solenoid operates to enter the post-motor reversal mode, the control circuit causes the motor to reverse after the rotor has rotated once, so that the rotor does not reverse.

Example An example of the present invention will be described below.

FIG. 1 is a perspective plan view showing the overall outline of a tape recorder according to an embodiment of the present invention, and FIG. 1 is drawn with overlapping lines so that the entire engagement relationship can be understood. The relationships are consistent (all plan views below are perspective views). In the figure, reference numeral 1 is a tape cassette, and the entire mechanism is almost contained within the projection inner surface. Reference numeral 2 denotes a motor, and a rotational force is transmitted by a belt 7 to the intermediate pulley 3, the main pulley 4, the forward flywheel 5, and the reverse flywheel 6. 5a and 6a are forward and reverse capstans, respectively.

FIG. 2 shows only the rotary system of the present embodiment, and this rotary system will be described next. The rotational force is transmitted from the small gear 4a of the main pulley 4 to the main gear 8.
Reference numeral 9 denotes an idler gear for fast-forwarding / rewinding, which is always meshed with the main gear 8 and can be in a position including the illustrated state and the neutral position. However, the illustrated position is transferred to the right reel gear 11 via the relay gear 10. The rotation is transmitted and the machine enters the fast-forward state. On the other hand, at the position 9'over the neutral position, the rotation is transmitted to the left reel gear 13 via the relay gear 12, and the rewinding state is established. However, at this time, the motor 2 is in the reverse state,
In other cases (fast-forward and playback states), the motor 2 is in the normal rotation state (see the arrow in the figure).

Next, rotation transmission of the reproduction system will be described. It is transmitted from the main gear 8 to a main small gear 14 which is concentric with the main gear 8 and is provided via a friction mechanism (described later).
From 14, it is transmitted to the play gear 15. The play gear 15 is always meshed with the main small gear 14, and the play gear 15 is in the neutral position shown in the drawing, the position meshing with the relay gear 10, and the relay gear 16
At a position where the play gear 15 meshes with the relay gear 10, the play gear 15 is transmitted to the right reel gear 11 to be in the normal rotation reproduction winding state. On the other hand, at the position where the play gear 15 meshes with the relay gear 16, the transmission is transmitted to the left reel gear 13 via the relay gear 12, and a reverse rewind winding state is set. In this reproducing state, the motor 2 is in the normal rotation state (shown) at any position.

Reference numeral 17 denotes a reduction gear, which has a two-stage shape including a gear that constantly meshes with the main gear 8 and a small gear, and has rotational force to an intermittent cam gear 18 (to be described later) that has a toothless portion and takes out power for reproducing operation. It is something that is transmitted.

Next, the vertical relationship of the above-described friction mechanism and the like will be described with reference to FIG. 3 showing a sectional view of the rotating system. It is transmitted from the belt 7 to the main pulley 4, the small gear 4a to the main gear 8, the main gear 14 to the play gear 15, the relay gear 10 or 12 to the reel base gear 11 or 13, and the coaxial reel base 19. It Here, play gear 15 and idler gear 9
Are supported by shafts on the play plate 20 and the idler plate 21, respectively, and the other gears and pulleys are the upper substrate 22 and the lower substrate 23.
It is supported by the upper shaft. The friction mechanism of the main gear 8 has a main small gear as shown in FIG.
The pulley 24 and the main gear 8 which are press-fitted into 14 and rotate integrally
Is provided between the main gear 8 and the main small gear 14 by holding the felt 25 with a spring 26.
The rotational force is transmitted by being urged to.

With this mechanism, the rotating force is transmitted with a constant torque from the constant rotation of the motor 2 to the changing rotation speed of the reel base 19.

Further, the idler gear 9 is attached to the idler gear plate by the spring 27.
A frictional force is created between the idler plate 21 and the main gear 8 and the idler plate 21 is moved in the rotation direction of the main gear 8.

Next, the relationship between the lever and the rods will be described with reference to FIGS. The aforementioned idler plate 21 has a shaft 28 on the lower substrate 23.
And 29 to rotate about the center of the main gear 8. As a result, the friction of the idler gear 9 causes the main gear 8 to rotate in the rotation direction. The above-mentioned play plate 20 is also configured to rotate around the center of the main gear 8, and the play gear 15 on this play plate 20 is
It meshes with the relay gear 10 or 16 described above. Recycled board 30
Is guided by the shafts 31 and 32 on the lower substrate 23, and
It is urged backward (downward in the figure) at 33. Further, the shaft 34 on the reproduction substrate 30 engages with an inner cam (described later) of the cam gear 18, and the reproduction substrate 30 is moved forward and backward according to the rotation angle of the cam gear 18. Reference numeral 35 denotes a positive / negative rod that moves in the left-right direction with respect to the reproduction substrate 30 by fitting the engagement pieces 35d and 35e into the guide holes 30a and 30b on the reproduction substrate 30, but is restricted in the front-back direction. There is. 36 and 37 are forward rotation,
The pinch roller for reversing is selectively engaged by the engaging pieces 35a, 35b formed at the ends of the positive / negative rod 35 in accordance with the lateral movement of the positive / negative rod 35.

That is, when the forward / reverse rod 35 moves to the right and the reproduction substrate 30 advances by the cam gear 18, the forward rotation pinch roller 36 moves to the right.
On the other hand, when the reproduction substrate is moved to the left and moved forward, the left-side inversion pinch rollers 37 are respectively selected and moved forward to come into pressure contact with the capstans 5a and 6a. The engaging piece 30c formed at one end of the reproduction substrate 30 engages with the hole 20a of the play plate 20,
Is retracted to the stop position, the engaging piece 30c
The play plate 20 is held in the neutral position by engaging with the inclined end of the play gear 15, and the play gear 15 does not mesh with the relay gears 16, 10. 3
Reference numeral 8 is a solenoid arm, and 39 is a solenoid plate, both of which have a shaft 29 on the lower substrate 23 as the same rotary shaft. A shaft 38a provided at one end of the solenoid arm 38 is engaged with the cam surface of the cam gear 18, and determines the rotation angle of the cam gear 18. Reference numeral 40 denotes a solenoid, which operates in a pair with the movable piece 41, but the movable piece 4 is attached to the shaft 38b at the other end of the solenoid arm 38.
1 is installed. Further, the solenoid arm 38 and the solenoid plate 39 are normally moved together by locking the urging force of the spring 42 connected by the spring 42 by the stopper 38c, and the spring 43
Is urged in the direction opposite to the solenoid 40. The engaging piece 39a formed at one end of the solenoid plate 39 is used for
The positive and negative rods 35 are moved to the left and right by engaging with the holes 35c formed in 5 and rotating the solenoid plate 39. Where solenoid
Explaining the relationship between 40 and the movable piece 41, the solenoid 40
Is a coil wound around a magnet, and the magnet and the movable piece 41 are attracted to each other in the non-energized state, and when the coil is energized, the magnetic force is cut off and the magnet is not attracted. Here, when the coil is not energized, the urging force of the spring 43 prevails and the solenoid arm 38 operates. 44 is a direction memory rod (hereinafter referred to as DM rod),
The DM rod 44 is guided by the shaft 45 on the lower substrate 23 and the engaging portion 46a of the DM arm 46, and the bent engaging piece 44 formed at one end thereof.
An engaging piece 20b projectingly formed on the play plate 20 is engaged between a and 44b. Further, a switch movable piece engaging portion 44c is provided on the DM rod 44 so that it can be constantly engaged with the movable piece of the electric switch Sm (not shown) so that the moving direction of the DM rod 44 can be electrically detected. I have to. The DM arm 46 is
It is rotatable about a shaft 47 on the lower substrate 23 as a fulcrum. Further, it has a lock arm 48 having its shaft 47 as a rotation axis, and the lock arm 48 is biased clockwise by a spring 49, and one end 48a of this lock arm 48 has an end portion 30d of the reproduction substrate 30. The other end 48b is in a positional relationship such that it can be engaged with the end portion 21b of the idler plate 21.

 The operation will be described below with the above configuration.

First, fast forward / rewind will be described. FIG. 5 shows a state of fast-forward (FF) and FIG. 6 shows a state of rewind (REW). The state is switched from the stop state of FIG. 4 according to the rotation direction of the motor 2 as shown in FIG. 5 or FIG. . That is, in FIG. 5, when the main gear 8 rotates to the right, the idler plate 21 moves to the right due to the friction mechanism of the idler gear 9 described in FIG.
It is transmitted to the right reel base gear 11 via the relay gear 10.
Similarly, in FIG. 6, when the main gear 8 rotates to the left, the idler plate 21 moves to the left, and the rotation is transmitted to the left reel base gear 13 via the idler gear 9.

Next, as for the reproducing operation, FIG. 7 shows normal reproduction and FIG. 8 shows reverse reproduction. Although the operation of the cam gear 1 will be described later, when the reproduction substrate 30 is moved forward by the cam of the cam gear 18, the reproduction state in which the forward / reverse rod 35 is moved to the right and moved forward is the seventh.
FIG. That is, the engagement piece 35a at one end of the forward / reverse rod 35 is engaged with the spring member 36a of the right pinch roller 36, and the right pinch roller 36 is pressed against the capstan 5a to feed the tape in the normal rotation direction. In addition, the front left end 35f of the positive / reverse rod 35 is the play board 2
The engaging portion 20c of 0 is pushed up, and the play plate 20 is rotated clockwise. Then, the aforementioned main gear 8 and main small gear 14
Rotation is transmitted from the friction mechanism to the play gear 15, the relay gear 10, and the right reel gear 11 to wind the tape. On the other hand, the engagement piece 20b of the play plate 20 lifts up the engagement piece 44b of the DM rod 44, and the switch Sm (not shown) is switched by the engagement portion 44c to store the normal rotation state. Even from this state to the locked state shown in FIG. 1, the DM rod 44 and the switch Sm are locked due to the relationship between the play size of the engaging piece 44a of the DM rod 44 and the play plate 20b.
Memorizes whether the previous reproduction state is the normal rotation state or the reverse rotation state while it is held (no force is applied). That is, the switch Sm keeps the normal rotation unless it is reversed by the next inversion command. The use of the lock arm 48 will also be described in detail with a cam operation described later, but the lock arm 48 is rotated while one end 48a is in contact with the end 30d of the reproduction substrate 30 as shown in FIG. The other end 48b locks the end 21b of the idler plate 21. That is, since the main gear 8 always rotates in the reproduction state, the idler plate 21 also rotates rightward to try to fast-forward as described in the fast-forward operation. The lock arm 48 prevents this.

The same applies to the inverted state of FIG. 8, in which the forward / backward rod 35 moves to the left and the regenerating substrate 30 moves forward, the left pinch roller 37 moves forward, and the play plate 20 is engaged with the front right end 35g of the forward / reverse rod 35. Part 2
Pressing 0d rotates the play board 20 counterclockwise. Then, the rotation system is transmitted from the main gear 8 to the play gear 15, the relay gears 16 and 12, and the left reel base gear 13. In addition, when the engaging piece 20b of the play plate 20 abuts on the engaging piece 44a, DM
The rod 44 is lowered and the switch Sm stores in the inverted state. Similarly, the DM arm 46, which is interlocked with the DM rod 44, also stores the reproduction state, so that the running direction can be mechanically displayed by the tip 46b thereof. The state of the lock arm 48 is the same as in FIG.

As shown in FIG. 9, the cam gear 18 has a first cam 18a formed on one surface (referred to as surface A), and a second cam 18b and a second cam 18b provided on the other surface (referred to as surface B). 3 cam 18c and a first toothless portion 18d
And a second missing tooth portion 18e, and is a gear that operates intermittently. The first cam 18a has a first locking portion 18a-1 for holding a stopped state, a second locking portion 18a-2 for holding a reproduction state, The inclined surfaces 18a-3 and 18a-4, and the inclined surfaces 18a-5 and 18a-
b and a cam surface 18a-7 are formed. The second cam 18b has an engaging portion 18b-1 with which the shaft 34 is engaged at the retreat position of the recycled substrate 30, an engaging portion 18b-2 with which the reciprocating substrate 30 is engaged at the forward position, and both engaging portions. A cam surface 18b-3 is formed between 18b-1 and 18b-2, the radius of rotation of which gradually decreases. Then, the third cam 18c forming the outer cam
Form a concave portion 18c-1, a large-diameter cam surface 18c-2, and a small-diameter cam surface 18c-3 following the large-diameter cam surface 18c-2.

Next, the cam gear 18 configured as described above and the operation related to the cam gear 18 will be described.

This will be described with reference to FIG. 10, but the operation order is from FIG. A to FIG. E. In FIGS. And the relationship between the solenoid 40, the solenoid arm 38, the solenoid plate 39, and the forward / reverse rod 35. The relationship between the cams 18b and 18c on the B side of the cam gear 18, the lock arm 48, the reproduction substrate 30, and the idler plate 21 is shown on the right side. Show. Then, FIG. 11 shows a cam diagram of the cams 18a, 18b, 18c of the cam gear 18, and shows the movement amounts of the engagement shafts 38a and 34 and the idler plate 21 with respect to the rotation angles of the A surface and the B surface. 11A to 11E correspond to FIGS. 10A to 10E, and the left side of FIG. 10 is an A side view of FIG.
The right side of FIG. 10 corresponds to the B side view. Hereinafter, the operation will be sequentially described.

FIG. 10A shows a stopped state, and on the left side cam A surface, the shaft 38a provided at one end of the solenoid arm 38 has the engagement portion 18 of the cam 18a.
The toothless portion 18d of the cam gear 18 engages with the relay gear 17, and the movable piece 4 of the shaft 38b at the other end of the solenoid arm 38 engages with a-1.
1 is adsorbed and held by the solenoid 40. Further, one end 39a of the solenoid plate 39 which is integrally rotated by the solenoid arm 38 and the spring 42 is engaged with the hole 35c of the positive / negative rod 35, and the positive / negative rod 35 is located on the left side in the figure. . on the other hand,
On the surface of the cam B on the right side of FIG. A, the shaft 34 on the reproduction substrate 30 is engaged with the second cam 18b, and the one end 21a of the idler plate 21 is in contact with the third cam 18c outside thereof. In the state shown in FIG. A, the idler gear 9 on the idler plate 21 is rotatable, and the forward rotation or rewinding state described above is possible by the normal rotation or reverse rotation of the motor 2.

When the solenoid 40 is energized in the state shown in FIG. A, the state shown in FIG. That is, the attraction force of the solenoid 40 is lost, and the force of the spring 43 causes the solenoid arm 38 and the solenoid plate 39 to move.
Rotates counterclockwise. Then, the shaft 38a engages with the engaging portion 18a-1.
And contacting the inclined surface 18a-3, the cam gear 18 is rotated to the state shown in FIG.
17 Engagement Rotate with the rotation force of the motor 2 and rotate clockwise.
On the other hand, as shown in the right figure, one end 38d of the solenoid arm 38
Then, the idler plate 21 is pushed out in the direction of the arrow to prevent the fast forward state.

From the state of FIG. B to the rotational angle of the state of FIG. C, the shaft 38a moves along the inclined surface 18a-5 of the cam 18a, and the solenoid arm 38 returns the movable piece 41 to the attractable position of the solenoid 40 ( At that time, it is the adsorption state of FIG. C). And this C
At the position shown in the figure, the solenoid arm 38 takes two positions depending on whether the solenoid 40 is energized or not (C
(The state shown on the left side of the figure). In conjunction with that, the positive and negative Nid 35,
Take two positions, the right side 35 'when energized, and the left side in the adsorption state without energization (left side figure). As can be seen from the diagram on the right side of this C diagram, the reproduction substrate 30 hardly moves up to the state of this C diagram, and the idler plate 21 rotates to the left by the large diameter cam surface 18c-2 of the third cam 18c. Then, the third cam 18c takes over the role of rotating the idler plate 21 by the solenoid arm 38 in FIG.

The rotation angle is further advanced from the state shown in FIG. C, and the shaft 34 is moved toward the center of the cam gear 18 by the cam surface 18b-3 of the second cam 18b to advance the reproduction substrate 30. Here, as shown in the above description of the reproduction state,
When 35 is moved to the right and the reproduction substrate 30 is moved forward, normal reproduction is performed. When the reproduction substrate 30 is moved to the left, reverse reproduction is performed.
In the state of the rotational position in the figure, if the current is applied, the normal rotation reproduction is performed, and if the current is not applied, the reverse reproduction is performed. The lower part of FIG. 11 shows the energization pattern.

Even when the solenoid 40 is energized to move the movable piece 41 away from the suction position in FIG. D, the movable surface 41 moves back to the suction position by the cam surface 18a-7 of the cam 18a from the C view to the D view. Then, the movable piece 41 is adsorbed and held by the solenoid 40. At this time, the shaft 38a is locked to the locking portion 18a-2 of the cam 18a, and at this position, the second toothless portion of the cam gear 18 is
18e faces the relay gear 17, and transmission of the rotational force of the motor 2 to the cam gear 18 is cut off. Further, the lock arm 48 is rotated at the tip 30d thereof by the forward movement of the reproducing base 30, and the other end 48b is positioned in front of the one end 21b of the idler plate 21, the one end 21a of the idler plate 21 being the cam of the cam 18c. Face 18c-2
From 18c-3 to 18c-3, the idler plate 21 pivots slightly, and the one end 21b is locked by the other end 48b of the lock arm 48. Even if the recycled substrate 30 is retracted from this state, the lock is held by the spring 49. That is, even when the reproduction state of the D diagram changes to the stopped state of the E diagram, the state becomes as shown on the right side of the E diagram. This is because the stop state is the same as the fast-forward state, so when the state is changed from the playback state to the stop state, the problem that the reel stand is in the fast-forward state until the motor 2 is stopped is solved. The idler plate 21 is locked in the stopped state, and the fast-forward state does not occur even when the playback state is changed to the stopped state.

When the solenoid 40 is energized (stop command is issued) in the state shown in FIG. D, the shaft 38a is unlocked by the stop portion 18a-2 of the first cam 18a of the cam gear 18, and the shaft 38a comes into contact with the inclined surface 18a-4. The cam gear 18 is slightly rotated, and the relay gear 17 and the cam gear 18 are connected and rotated again from the toothless portion 18e. Then, the reproduction substrate 30 retracts on the surface of the cam B, and the solenoid arm 38 is returned to the suction position by the inclined surface 18a-6 on the surface of the cam A, and the state shown in FIG. In order to return from the stopped state shown in Fig. E to the stopped state of A, that is, the state in which fast-forward rewinding is possible, the motor 2 is reversed for a moment, and the idler plate 21 moves for a moment to the left (counterclockwise) to lock the end 21b. Arm 4
8 The lock by the other end 48b is released by the biasing force of the spring 49.

For impact resistance, the magnetic force of the solenoid 40
There is a certain limit because only 41 is adsorbed. In the reproduction state of FIG. D, the forward and backward rods 35 are disengaged from the engaging pieces 39a of the solenoid plate 39 at the holes 35c, so that the balance between the solenoid arm 38 and the solenoid plate 39 is almost uniform in direction and shock resistance. I have sex. However, in the stopped state or the fast-forward rewinding state (that is, in FIGS. A and E), since the positive / negative rod 35 and the solenoid plate 39 are engaged with the hole 35c and the engagement piece 39a, the weight of the positive / negative rod 35 is unbalanced. It becomes a balance. Therefore, as shown on the left side of FIG. E, since the solenoid arm 38 and the solenoid plate 39 are connected as a double structure by a spring 42 as a separate structure, the positive / negative rod 35 is moved by an impact applied to the entire mechanism 41. Even if it moves to the right side from 35 to 35 'in the figure so as to remove the attraction force of, it is absorbed by the spring 42 and the solenoid plate 39 only rotates to the position of 39'. Only the biasing force of is applied, and this biasing force is smaller than the attraction force of the movable piece 41,
The movable piece 41 cannot be removed.

In the unlikely event that the suction is released, the next operation mode is only entered, but the problem is that the suction is released when the motor 2 is reversing in the rewinding state, and the cam gear 18 has a toothless portion.
Attempts to engage the relay gear 17 from 18d, but since the relay gear 17 is inverted, it does not engage and the rattling operation sound continues. Therefore, as will be described with reference to the right diagram of FIG. 10F, one end 39b of the solenoid plate 39 is
When the idler plate 21 is moved to the right for unwinding, the solenoid 40 is attracted by one end 39b of the solenoid plate 39 to move the idler plate 21 to the right. A little closer, idler gear 9 and relay gear
12 is disconnected. That is, since the reel base does not rotate, the motor 2 stops as in the case of the end of the tape. Therefore, the rattling sound does not continue and stops in a few seconds.

Furthermore, if the rewinding command is repeated with the movable piece 41 removed, the rattling sound will continue for several seconds. Therefore, when the rewinding command first enters, the motor 2 is rotated in the normal direction. This problem is solved by turning the cam gear 18 to make one rotation and then reversing the motor 2.

In other words, when rearranging fast-rewinding and rewinding, when the fast-forwarding command is issued, the motor 2 is momentarily reversed to rewind and then fast-forwarding, and when the rewinding command is issued, the motor 2 is rotated in the forward direction to be stopped through reproduction. It will be unwinding.

The above-mentioned fast-forwarding and rewinding operations will be further described with reference to the circuit diagram of FIG. 12 and the timing chart of FIG. In FIG. 12, 50 is a control circuit, and this control circuit 50 includes a reproduction operation switch S ₁ , a fast-forward operation switch S ₂ ,
Based on the on / off inputs of the rewind operation switch S ₃ , the stop operation switch S _{4, the} reproduction detection switch S _5, etc., the drive and forward / backward control of the motor 2 and the operation control of the solenoid 40 are performed. In the figure, 51 is a motor control circuit, which controls driving and stopping of the motor 2 and switching of the rotation direction. That is, the motor drive output signal is taken out from the first output terminal 1 of the control circuit 50 to control the motor rotation start transistor Q _1, and the motor inversion output signal is taken out from the second output terminal 2 to make the motor inversion transistor.
Controls Q _2, taken out of the third solenoid operating signal from the output terminal 3 and so as to control the solenoid same effect transistor Q _3, the output of the transistor Q ₁ and Q ₂ are input to the motor control circuit 51 The motor 2 is controlled to operate, and the output of the transistor Q ₃ controls the operation of the solenoid 40. The power source is shown in FIG.

When performing the fast-forwarding with the circuit configuration as described above, the control is performed at the timing shown in FIG. That is, when a fast-forward operation is commanded by operating the fast-forward operation switch S ₂ , an output signal is output to the output terminals 1 and 2 of the control circuit 50, but the inverted output to the terminal 2 is stopped in a short time, and thus the above-mentioned The idler 9 reverses for a moment, but immediately starts the fast forward operation on the motor forward side. During this fast-forward operation, no solenoid operation signal is output.

Next, in the case of rewinding, as shown in the figure, when the rewinding operation is instructed by the operation of the rewinding operation switch S ₃ , the control circuit 50 first outputs a signal to the terminals 1 and 3, and the motor 2 is rotated and the solenoid 40 is operated to start the rotation of the cam gear 18 from the stopped state. Then, the reproduction detection switch S _{5 which} is brought into the reproduction state by the action of the cam gear 18 is turned on, and when the solenoid operation output signal is output from the terminal 2 at this time, the reproduction state of the cam gear 18 is released and the state shifts to the stop state. At that time, when the reproduction detection switch S ₅ is turned off, the motor inversion output signal is output from the terminal 2 at the subsequent timing, and the motor 2
The reversing operation is started, and thus the rewinding state is set.

As described above, the tape recorder of the present invention has the solenoid that controls the operation of the rotating body that determines the operation mode,
A mechanism for performing a tape running operation corresponding to the forward or reverse rotation of the motor in the stop mode of the rotating body, and a control circuit for controlling the rotating body and the motor are provided, and a direction opposite to the rotating direction of the rotating body from the stopped state is provided. When the motor is driven so that the tape running operation mode corresponding to motor reversal is entered,
Since the rotating circuit is always operated by the control circuit to return to the stopped state and then entered, the solenoid having two positions is not in the holding state which should be in the tape running operation mode corresponding to the motor reversal due to external impact or the like. Even in such a case, since the tape running operation is started after a predetermined state is reached after the operation of the rotating body, there is no abnormal noise or gear loss due to the reverse rotation of the rotating body, and the operation is smooth. Moreover, since it is not necessary to separately provide a switch or the like, it is possible to provide a tape recorder that is inexpensive and saves space, and is very effective.

[Brief description of drawings]

FIG. 1 is a perspective plan view schematically showing the entirety of the tape recorder of the present invention, FIG. 2 is a perspective plan view schematically showing a rotary system, and FIG.
The figure is a cross-sectional view of the rotating system, FIG. 4A is a perspective plan view showing the entire lever and rods, and FIG. 4B is a plan view of the same portion.
FIG. 5 is a perspective plan view of the rotary system in the same fast-forward state, FIG. 6 is a perspective plan view of the rewinding state, FIG. 7 is a perspective plan view of the same normal rotation reproduction state, and FIG. FIG. 9 is an explanatory plan view of the cam gear, FIG. 9 is an explanatory view of the same cam gear, FIGS. 10A to 10F are operation exploded views of the cam gear rotating body, FIG. 11 is a cam diagram, FIG. The figure is a timing chart of the same fast-forward and rewind operations. 2 ... Motor, 9 ... Idler gear, 18 ... Cam gear (rotating body), 21 ... Idler plate, 40 ... Solenoid, 50
...... Control circuit.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Enguchi To Kadoma 1006 Kadoma, Matsushita Electric Industrial Co., Ltd. (72) Inventor Kotaro Kashima Kadoma 1006 Kadoma, Matsushita Electric Industrial (56) References JP-A-58-200451 (JP, A)

Claims (1)

(57) [Claims] 1. A motor that is driven in a normal direction or a reverse direction, a rotating body having a cam and an intermittent gear that rotate in a fixed direction by the motor and determine at least an operation mode of a stopped state and another operation state, and A solenoid for controlling the operation of the rotating body, a tape running mechanism for performing a corresponding tape running operation by the forward or reverse driving of the motor in the stopped state of the rotating body, and a forward or reverse rotation of the rotating body and the motor. A control circuit for controlling is provided, and when the motor is driven from the stopped state to the direction opposite to the normal rotation direction of the rotating body to enter the operation mode corresponding to the motor reversal of the tape traveling operation, be sure to A tape recorder characterized by being controlled by the above-mentioned control circuit so that the rotating body is operated and then returned to a stopped state before entering.