JP2543046B2 - Tape recorder - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape recorder capable of playing back and forth.

2. Description of the Related Art In recent years, tape recorders have been changing from those that can be played back in one way to those that can be played back and forth.

In the case of a one-way playback tape recorder, the tape running direction is always constant, so it was relatively easy to load the cassette tape in the direction to be played next, but in a tape recorder capable of reciprocating playback, In the next reproducing operation, it was necessary to carefully confirm in which direction the tape should be reproduced, and it was not so easy.

In some cases, when the cassette tape is replaced, that is, when the cassette lid is opened and closed, the switch is electrically turned on to change the traveling direction to the forward rotation direction.

Problems to be Solved by the Invention However, with the above configuration, even if the cassette lid is opened and closed for normal rotation, the motor rotates unnaturally even though the reproduction operation is not performed. there were.

In view of the above problems, the present invention mechanically switches the switch when the cassette lid is opened, and at that time, there is no unnatural movement such as the operation of the motor. It is intended to provide a starting tape recorder.

Means for Solving the Problems In order to solve the above problems, the tape recorder according to the present invention is such that the compulsory member forcibly moves the storage means to the normal rotation position only when the cassette lid is opened, and at the same time, the electric recording is performed. The switch is also in the normal rotation state, and the play board is provided with a structure capable of maintaining the neutral position regardless of the position of the storage means until a reproduction command is issued by a reproduction operation next time.

With the above-described configuration, the present invention always starts traveling in the forward rotation direction when the cassette lid is opened, that is, after the cassette tape is replaced, and when the cassette lid is closed, the traveling direction immediately before the stop is memorized, and Even if the reverse reproduction or the reverse reproduction is not distinguished, only by issuing a reproduction instruction, the reproduction direction immediately before the stop is automatically selected and operated.

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

FIG. 1 is a perspective plan view showing an outline of the whole tape recorder in an embodiment of the present invention. In the figure, lines are overlapped so that the engagement relationship of the whole is understood. The relationships are consistent. (All the following plan views are perspective views) In the figure, reference numeral 1 is a tape cassette, and the entire mechanism is almost in the projection plane. 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 take three positions including the illustrated state and the neutral position.
The rotation is transmitted to the right reel gear 11 via the, and a fast-forward state is established. On the other hand, at the position 9 'after passing the neutral position, the rotation is transmitted to the left reel gear 13 via the relay gear 12, and a rewind state is set. However, at this time, the motor 2 is in the reverse state, and in other cases (fast-forwarding and reproducing states), the motor 2 is in the normal rotating state (see the arrow in the figure). It is transmitted from the main gear 8 to a main gear 14 which is concentric with the main gear 8 via a friction mechanism (described later), and the main small gear 14
From, it is transmitted to the play gear 15. The play gear 15 is always meshed with the main small gear 14, and is in the neutral position shown in the figure, the position meshed 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 having a gear that constantly meshes with the main gear 8 and a small gear.
To transmit the turning force to

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, from the small gear 4a to the main gear 8, from the main small gear 14 to the play gear 15, further from the relay gear 10 or 12 to the reel base gear 11 or 13, and to the coaxial reel base 19. You. 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.
The upper shaft is supported. 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 creates a frictional force between the idler plate 21 and the idler plate 21 by a spring 27, and attempts to move the idler plate 21 in the rotation direction of the main gear 8.

Next, the relationship between the levers and rods is shown in Fig. 4 (a) and (b).
Follow the instructions below. The aforementioned idler plate 21 is guided by the shafts 28 and 29 on the lower substrate 23 and rotates about the center of the main gear 8, whereby the friction of the idler gear 9 causes the rotation direction of the main gear 8 to rotate. To rotate.
The play plate 20 described above is also configured to rotate about the center of the main gear 8.
The 15 meshes with the relay gear 10 or 16 described above. The reproduction substrate 30 is guided by shafts 31 and 32 on the lower substrate 23, and is biased rearward (downward in the figure) by a return spring 33. The shaft 34 on the reproduction substrate 30 is an inner cam of the cam gear 18 (described later).
Depending on the rotation angle of this cam gear 18, the reproduction board
30 forwards and backwards are made. 35 is a positive and negative rod and is a recycled substrate 30
When the engaging pieces 35d and 35e are fitted into the upper guide holes 30a and 30b, they move in the left-right direction with respect to the reproduction substrate 30, but are restricted in the front-rear direction. Reference numerals 36 and 37 denote forward and reverse pinch rollers, respectively, which are selectively engaged by engagement pieces 35a and 35b formed at the ends of the forward and reverse rods 35 in accordance with the right and left movement of the forward and reverse rods 35. You.

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.

Reference numeral 38 is a solenoid arm, and 39 is a solenoid plate, both of which use the 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 as a pair with the movable piece 41. The movable piece 41 is attached to a shaft 38b at the other end of the solenoid arm. Further, the solenoid arm 38 and the solenoid plate 39 are connected by a spring 42, and the urging force of the spring 42 is locked by a stopper 38c so that the solenoid arm 38 and the solenoid plate 39 normally move as a unit.
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, in the non-sucking state in which the coil is energized, the urging force of the spring 43 wins, and the solenoid arm 38 moves. Reference numeral 44 denotes a direction memory rod (hereinafter referred to as a DM rod) that functions as a part of the storage means, and this DM rod 44 functions as a part of the storage means like the shaft 45 on the lower substrate 23.
The engaging portion 46a of the arm 46 is guided, and the engaging piece 20b projectingly formed on the play plate 20 is engaged between the bent engaging pieces 44a and 44b formed at one end thereof. Also, the DM rod 4
The switch movable piece engaging portion 44c is provided on the 4 and the DM rod 44
Together with it, the movable piece of the electric switch Sm for the division memory as a part of the storage means is always engaged, moves almost integrally with the DM rod 44, and uniquely engages with the DM arm 46 to change its position. It can be detected electrically. The DM arm 46 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 this lock arm 48 is biased clockwise by a spring 49, and one end 48a of this lock arm 48 has a reproduction substrate 30.
The end portion 30d of the idler plate 21 is engageable with the end portion 30d and the end portion 21b of the idler plate 21 is engageable with the other end portion 48b.

Reference numeral 50 denotes a forward rotation return plate as a forcing member. The forward rotation return plate 50 is held slidably in the vertical direction in the drawing and is urged downward by a spring 51. Further, in the range of H in the figure, as apparent from FIG. 4C, a hole 50a is provided so that the DM arm 46 can rotate, and the tip 46b is inserted into this hole 50a. A shaft 51 is set up on the forward rotation return plate 50, and an arm shaft 53 is also set up on the arm 52.
53 is guided by a guide hole 54a of a guide angle 54 (described later). The normal rotation return plate 50 and the shaft 50b are in contact with the arm 52 and the arm shaft 53 with the cassette lid (not shown) closed.

FIG. 5 is a right side view of FIG. 4 (a), in which FIG. 5 (a) shows the cassette lid closed, and FIG. 5 (b) shows the same opened state. The cassette lid (not shown) is a tape cassette 1.
The arm 52 is rotatably integrated with a holder 55 for holding the arm 55, and the arm 52 is rotatably connected to the holder 55 by a shaft 56. A shaft 53 which is erected on an arm 52 which is interlocked with a cassette lid is slidably guided by a guide hole 54a of a guide angle 54. As described above, the shaft 50b set up on the normal rotation return plate 50 is also slidably held by the guide hole 54a of the guide angle 54.

Here, in the state of FIG. 5A, that is, in the state where the tape cassette 1 is mounted and the cassette lid is closed, the DM arm is
46 is rotatable in the range of the dimension H as described above, and therefore can be held in the first or second position in response to the movement of the DM rod 44. Then, in the state of FIG. 6B, that is, in the state where the cassette lid is opened to take out or insert the tape cassette 1, the DM arm 46 is forced by the biasing force of the spring 51 through the hole 50a of the forward rotation return plate 50. Therefore, the DM rod 44 is moved upward in the drawing, and the switch Sm is set so as to store the forward running direction via the engaging portion 44c. become. That is, when the cassette lid is opened once, the DM arm 46 and DM rod 44 must be
Is in the normal rotation state.

 With the above configuration, the entire operation will be described below.

First, fast forward / rewind will be described. 6 is a fast-forward (FF) state, FIG. 7 is a rewinding (REW) state, and the state is switched from the stopped state of FIG. 4 depending on the rotation direction of the motor 2 as shown in FIG. 6 or 7. . That is, in FIG. 6, 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. 7, 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 internal gear 13 via the idler gear 9.

Next, regarding the reproducing operation, FIG. 8 shows normal reproduction and FIG. 9 shows reverse reproduction. Although the operation of the cam gear 18 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 eighth.
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. That is, the play plate 20 takes the first position at the time of normal rotation reproduction by the forward / reverse rod 35 as the driving means, so that the play gear 15 is relayed from the friction mechanism between the main gear 8 and the main small gear 14 described above. The rotation is transmitted to the gear 10 and the right reel gear 11 to wind the tape. Meanwhile, the play board 20
The engaging piece 20b of (1) lifts up the engaging piece 44b of the DM rod 44, and switches the switch Sm by the engaging portion 44c to store the normal rotation state. From this state to the stop state shown in Fig. 1,
Because of the relationship between the play size of the engagement piece 44a of the DM rod 44 and the play plate 20b, the DM rod 44 and the switch Sm as the storage means are held by the click mechanism of the switch itself (the force is not applied) to the previous reproduction. It stores whether the state is a normal rotation state or a reverse rotation state. 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 in the cam operation described later. The one end 48a of the lock arm 48 is rotated by contacting the end portion 30d of the reproduction substrate 30 in the reproduction state, 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 to the right in the reproduction state, as described in the fast-forward operation, the idler plate 21 also rotates to the right to try to fast-forward, which is blocked by the lock arm 48. Is.

The reverse state of FIG. 9 is also the same, and when the normal / reverse rod 35 moves to the left and the reproduction substrate 30 advances, the left pinch roller 37 advances and operates almost integrally as a drive member for driving the play plate 20. Of the reproduction substrate 30 and the positive / negative rod 35, the front right end 35g of the positive / negative rod 35 pushes the engaging portion 20d of the play plate 20 to rotate the play plate 20 counterclockwise. Then, the rotation system includes the main gear 8, the play gear 15, the relay gears 16 and 1
2, transmitted to the left reel base gear 13. Further, the engagement piece 20b of the play plate 20 comes into contact with the engagement piece 44a, so that the DM rod 44
Switch Sm as part of said storage means
Becomes an inverted state and the state is stored by the click mechanism of the switch itself. Similarly, the DM arm 46 that operates integrally with the switch Sm and that operates in conjunction with the DM rod 44 also stores the playback state, so that it is possible to display the traveling direction mechanically by allowing the tip 46b to be confirmed from the outside. Become. The state of the lock arm 48 is the same as in FIG.

As shown in FIG. 10, the cam gear 18 has a first cam 18a formed on one surface (A surface) and a second cam 18b and a third cam 18b formed on the other surface (B surface). Cam 18c is formed on the outer periphery of the cam 18c, and the first toothless portion 18d is formed on the outer peripheral gear portion.
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-
6 and a cam surface 18a-7. 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.

Although description will be given based on FIG. 1, the operation order is from FIG. (A) to FIG. (E), and in FIGS. The relationship between the cam 18a on the A side of the cam gear 18, the solenoid 40, the solenoid arm 38, the solenoid plate 39, and the forward / reverse rod 35 is shown, and the cams 18b and 18c on the B side of the cam gear 18 on the right side, the lock arm 48, and the reproduction substrate. 30 shows the relationship between the idler plate 21. And, in FIG. 12, the cams 18a, 18b, 18 of the cam gear 18 are shown.
The cam diagram of c is shown, and the movement amount of each engagement shaft 38a and 34 and the idler board 21 with respect to the rotation angle of A surface and B surface is shown. 12A to 12E correspond to FIGS. 11A to 11E, the left side of FIG. 11 corresponds to the A side view of FIG. 12, and the right side of FIG. 11 corresponds to the B side view. . The operation will be sequentially described below.

FIG. 11 (A) shows a state in which the shaft 38a provided at one end of the solenoid arm 38 is located on the left side of the cam A surface of the cam 18a.
Of the cam gear 18, the toothless portion 18d of the cam gear 18 faces the relay gear 17, and the shaft 38 at the other end of the solenoid arm 38 is engaged.
The movable piece 41 of b is adsorbed and held by the solenoid 40.
Also, one end 39a of a solenoid arm 38 and a solenoid plate 39 which is integrally rotated by a spring 42 are provided with a hole 35c of the forward / reverse rod 35.
, And the forward / backward rod 35 is located on the left side in the figure. On the other hand, on the cam B surface on the right side of FIG. 7A, 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 the shaft. ing. In the state shown in FIG. 3A, the idler gear 9 on the idler plate 21 is
Is freely rotatable, and the above-described fast-forwarding or rewinding state is possible by the normal rotation or reversal of the motor 2.

(A) When the solenoid 40 is energized in the state shown in the figure, (B)
The state is as shown in the figure. That is, the attraction force of the solenoid 40 disappears, and the force of the spring 43 causes the solenoid arm 38 and the solenoid plate 39 to rotate counterclockwise. Then, the shaft 38a is disengaged from the locking portion 18a-1 and comes into contact with the inclined surface 18a-3, and the cam gear
Rotate 18 to the position shown in Fig. (B).
Reference numeral 18 meshes with the relay gear 17 and starts rotating clockwise by the rotational force of the motor 2. On the other hand, as shown in the right figure, the solenoid arm
At one end 38d of 38, the idler plate 21 is pushed out in the direction of the arrow to prevent the fast forward state.

From the state of (B) figure to the rotation angle of the state of (C) figure,
The shaft 38a moves along the inclined surface 18a-5 of the cam 18a, and the solenoid arm 38 is returned to the position where the movable piece 41 can be attracted by the solenoid 40 (at that time, the attracted state in FIG. 7C).
The solenoid arm 38 takes two positions depending on whether the solenoid 40 is energized or not at the position shown in FIG. 3C (the state shown on the left side of FIG. 3C). In conjunction with this, the positive and reverse rods 35 also take two positions on the right side 35 'in the energized state and on the left side in the attracted state without energization (left figure). Then, as can be seen from the diagram on the right side of this (C) diagram, the reproduction substrate 30 hardly advances up to the state of this (C) diagram, and the idler plate 21 is moved by the large diameter cam surface 18c-2 of the third cam 18c. Turn to the left, and the solenoid arm as shown in (B).
This third cam 18c takes over the role of rotating the idler plate 21 by the 38.

The rotation angle further advances from the state shown in FIG.
The shaft 34 is moved in the direction of the center of the cam gear 18 by the cam surface 18b-3 of the cam 18b, and the reproduction substrate 30 is advanced. Here, as described in the description of the above-described reproduction state, normal reproduction is performed when the reproduction substrate 30 moves forward with the positive / reverse rod 35 shifted to the right, and reverse reproduction is performed when the reproduction substrate 30 moves forward with the left.
In the state of the rotational position shown in (C), if the current is applied, the normal rotation reproduction is performed, and if the current is not applied, the reverse reproduction is performed. Which one to select depends on the state of the switch Sm as a part of the storage means,
Judge automatically. The lower part of Fig. 12 shows the energization pattern.

(D) is a regeneration state, and (C) is a solenoid 40.
Even if the movable piece 41 is separated from the suction position due to
From the figure to the figure (D), the cam surface 18a-7 of the cam 18a further returns to the suction position, and the movable piece 41 is suction-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 cam gear 1
The second toothless portion 18e of 8 faces the relay gear 17, and the 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 its tip 30d by the forward movement of the reproduction substrate 30, and the other end 48b is positioned in front of the one end 21b of the idler plate 21 and one end 21a of the idler plate 21 'is moved to the cam 18c.
When the cam surface 18c-2 is changed from 18c-2 to 18c-3, the idler plate 21 rotates 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 if the state of FIG. 7D is changed from the reproduction state of FIG. 7D to the state of FIG. This is to solve the problem that the reel base is in the fast-forward state until the motor 2 stops when moving from the playback state to the stop state because the stop state is the same as the fast-forward state. (1), the idler plate 21 is locked, and does not enter the fast-forward state even when shifting from the reproduction state to the stop state.

(D) When the solenoid 40 is energized (stop command) in the state shown in the figure, the lock of the shaft 38a by the locking portion 18a-2 of the first cam 18a of the cam gear 18 is released, and the shaft 38a moves to the inclined surface 18a-4. The cam gear 18 is slightly rotated in contact with the relay gear 17 and the cam gear 18 from the toothless portion 18e to rotate again.
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 of this (E) figure to the stopped state of (A), that is, the state in which fast-forward rewinding is possible, when the motor 2 is momentarily reversed,
The idler plate 21 moves to the left (counterclockwise) once and the end 21
The lock of the other end 48b of the lock arm 48 of b is released by the urging force of the spring 49.

Regarding the impact resistance, the movable piece 41 is
However, there is a certain limit, since only is adsorbed. (D) In the reproduction state shown in the drawing, the forward / backward rod 35 is disengaged from the engagement piece 39a of the solenoid plate 39 through the hole 35c, so that the balance between the solenoid arm 38 and the solenoid plate 39 is substantially uniform. Has impact resistance. However, the stopped state or the fast-forward rewind state (that is, (A),
(E) Figure shows that the correct rod 35 and the solenoid plate 39 have holes.
Since the rod 35c is engaged with the engagement piece 39a, the weight of the forward / backward rod 35 becomes unbalanced. Therefore, as shown in the left side of FIG. 8E, since the solenoid arm 38 and the solenoid plate 39 are connected by a spring 42 as a double structure composed of separate members, the forward / reverse rod 35 can be moved by an impact applied to the entire mechanism. Even if it moves to the right from 35 to 35 'in the figure so as to release the suction force of the piece 41, it is absorbed by the spring 42, and the solenoid plate 39 becomes 39'.
Only by rotating to the position, the solenoid arm 38 receives only the urging force of the spring 42, and this urging force is smaller than the attraction force of the movable piece 41, so the movable piece 41 cannot be disengaged.

If the suction is released, only the next operation mode is entered, but the problem is that if the suction is released when the motor 2 is reversed in the unwound state, the cam gear 18 is removed from the toothless portion 18d. Although the user tries to bite into the relay gear 17, since the relay gear 17 is reversed, the relay gear 17 does not mesh and the rattling operation sound continues. Therefore, as will be described with reference to the right diagram of FIG. 10 (F), one end 39b of the solenoid plate 39 is in a relationship of being engageable with one end 21c of the idler plate 21.
When 1 is moved to the left side for unwinding, the attraction force of the solenoid 40 releases the one end 39b of the solenoid plate 39 to slightly move the idler plate 21 to the right side, and the idler gear 9 and the relay gear 12 are 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 rattle 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 arranging the fast-forwarding and rewinding, when the fast-forwarding command is issued, the motor 2 is momentarily reversed to rewind and then fast-forwarding. It will be a return.

As described above, according to the present invention, the forcing member forcibly moves the storage means to the normal rotation position only when the cassette lid is opened.
At the same time, the forward rotation state is memorized electrically by the switch,
Until the next playback command, regardless of the position of the storage means,
By adopting a structure that allows the play plate to be held in the neutral position, after the cassette tape is replaced, the playback operation will always automatically start in the forward rotation direction. The traveling direction of can be stored. In addition, it is possible to realize a tape recorder that does not unnaturally rotate the motor by opening and closing the cassette lid as in the conventional case.
It 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. 4 (a) is a perspective plan view showing the entire lever and rods, FIG. 4 (b) is a plan view of the same portion, and FIG. Figure, Figure 5 (a) (b)
Is a schematic side view of the cassette holder in a closed state and an open state, FIG. 6 is a perspective plan view of the rotary system in the same fast-forwarding state, FIG. 7 is a perspective plan view in a rewinding state, and FIG. FIG. 9 is a perspective plan view of the reproducing state, and FIG. 9 is a perspective plan view of the reversing reproducing state.
FIG. 11 is an explanatory view of the cam gear, FIGS. 11 (A) to (F) are operation exploded views of the cam gear rotating body, and FIG. 12 is a cam diagram. 2 …… Motor, 20 …… Play board, 44 …… Direction memory rod, Sm …… Switch, 46 …… Direction memory arm, 44c …… Switch movable piece engaging part, Sm ……
Direction memory switch, 50 ... Forward rotation return plate,
51 …… Spring, 52 …… Arms interlocking with cassette lid, 55…
… Cassette holder.

Claims (1)

(57) [Claims] 1. A play plate which has a normal reproduction position and a reverse reproduction position and is in a neutral position except during both reproductions, and a first position when the play plate moves from the neutral position to the normal reproduction position. And a storage means that takes a second position when the play plate moves from the neutral position to the reverse reproduction position, and a storage means that engages with the storage means to take the first position and the second position. The storage device is provided with a forcing member and an arm configured to move the position of the forcing member in conjunction with opening and closing of the cassette lid, and the storage means moves the play plate from a normal rotation or reverse reproduction position to a neutral position. When it does, it is constituted so as to hold the immediately previous position, that is, the first or second position of the storage means, and when the forcing member engages with the storage means and takes the first position, it stores the memory. Forcibly moves the means to the first position When the second position is taken, the storage means can take the first position and the second position. A tape recorder, wherein the tape recorder is configured such that the first position can be taken and the forcing member moves to the second position in the second state in which the cassette lid is closed.