JPH0477380B2 - - Google Patents

Description

Detailed Description of the Invention (a) Field of Industrial Application The present invention relates to a tape recorder having a playback function in a first direction and a playback function in a second direction opposite to the first direction. This relates to a playback direction switching device.

(b) Prior Art Recently, tape recorders called head-on stereos, which allow you to listen to the playback sound of a magnetic tape using a head-on, have become popular. Generally, the playback function is provided in a second direction, which is the opposite direction to the first direction. A tape recorder with such a bidirectional playback function is equipped with an operation button for switching the playback direction, but ultra-compact tape recorders are subject to restrictions on the mounting position of the operation button, so an operation button for switching the playback direction is arranged. The problem is where to do it. A technique that solves this problem is disclosed in, for example, Japanese Patent Application Laid-Open No. 71154/1983.

(c) Problems to be solved by the invention The above-mentioned publication describes a technique in which the playback direction is switched using a playback operation button, but such a technique has no relation to the running direction of the magnetic tape. Since the playback direction is switched by operating a playback operation button, there is a problem in that the switching operation feels poor. Furthermore, such technology can be implemented in a tape recorder configured to use the rotational force of an electric motor to switch from a stop state to a playback state, and can be implemented by using pressure force on an operation button. This is difficult to implement in a tape recorder that is configured to switch to the playback operating state, or in which the playback operating button is locked in the operating position. The present invention aims to provide a reproduction direction switching device that is improved in this respect.

(d) Means for Solving the Problems The present invention, when operated while in a stopped state, causes the drive mechanism to be in a fast-forward operation state in a first direction, and also in a second direction, which is the opposite direction to the first direction. a first fast-forward operation button that switches the drive mechanism to a playback operation state in the first direction when operated in the playback operation state; and a first fast-forward operation button that switches the drive mechanism to the playback operation state in the second direction when operated in the stopped state. It also includes a second fast-forward operation button which, when operated in the first direction reproducing operation state, switches to the second direction reproducing operation state.

(E) Effect The present invention provides a second reproducing device which performs a reproducing direction switching operation to a second direction when the reproducing operation state is in the first direction.
A first fast-forward operation button that projects from the first fast-forward operation button, and that switches the playback direction to the first direction when the playback operation button is in the second direction.
The fast-forward operation button is made to protrude from the second fast-forward operation button.

(F) Embodiments The drawings all relate to the reproducing direction switching device of the present invention, and FIG. 1 is a plan view showing the stopped state, FIG. 2 is a plan view showing the reproducing state in the first direction, and FIG. 3 is a plan view showing the reproducing state in the first direction. Second
4 is a plan view showing a fast forwarding state in the first direction, FIG. 5 is a plan view showing a fast forwarding state in the second direction, and FIG. 6 is a plan view showing the playing direction switching slide. It is a top view of the principal part which shows the displacement mechanism of a moving plate. In the figure, 1 is attached to the fixed board 2 with arrows A and B.
This is a playback direction switching sliding plate which is installed so as to be able to be displaced in the direction shown in FIG. 1, and is located at the intermediate position shown in FIG. It has the function of switching a pinch roller (not shown) or the like so that the regeneration operation is performed in the first direction when the regeneration operation is performed, and the regeneration operation is performed in the second direction when the regeneration operation is performed in the second direction displaced in the direction of arrow B. . Reference numeral 3 denotes a connecting pin fixed to the playback direction switching sliding plate 1, 4 a trigger control unit formed on the playback direction switching sliding plate 1 and controlling a trigger operation to be described later, and 5 a linking pin fixed to the playback direction switching sliding plate 1. This is a control hole formed in the switching sliding plate 1. Reference numeral 6 denotes a locking member which is attached to the fixed base plate 2 so as to be movable in the directions of arrows A and B, and is biased by a spring 7 in the direction of arrow B, which is the locking position. , a second lock piece 9 and a third lock piece 10 are formed, and a stop operation button 11 is attached. 1
Reference numeral 2 designates a sliding board that is attached to the fixed board 2 so as to be movable in the directions of arrows C and D, and is biased by a spring 13 in the direction of arrow C, which is the non-operating position. Playback operation button 14
At the same time, it is displaced in the direction of arrow D, which is the operating position, and when it is in the operating position, it engages with the first lock piece 8 formed on the lock member 6, and the sliding base plate 12
An engaging protrusion 15 is formed to hold the holder in the operating position. Reference numeral 16 denotes a trigger control pin which is fixed to the sliding substrate 12 and controls a trigger operation to be described later. 17 is the arrow C and D on the fixed board.
A first rapid-forward operation lever is attached so as to be able to be displaced in the direction of arrow C and is biased by a spring 18 in the direction of arrow C, which is a non-operating position, and a first rapid-forward operation button 19 is attached. At the same time, an engaging protrusion 20 is formed which engages with a second lock piece 9 formed on the lock member 6 to hold the first fast-forward operating lever 17 in the operating position when the lever is in the fast-forward operating position. . Reference numeral 21 designates a second fast-forward operating lever that is attached to the fixed base plate 2 so as to be movable in the directions of arrows C and D, and is biased by a spring 22 in the direction of arrow C, which is a non-operating position; When the second fast-forward operating button 23 is attached and in the fast-forward operating position, it engages with the third lock piece 10 formed on the lock member 6 to hold the second fast-forward operating lever 21 in the operating position. An engaging protrusion 24 is formed. In such a lock mechanism, the sliding substrate 1
2 is held in the operating position by the engagement between the first lock piece 8 formed on the lock member 6 and the engagement protrusion 15, the first fast-forward operating lever 1
The engaging protrusions 20 and 24 formed on the operating lever 7 and the second fast-forward operation lever 21 are related to the second lock piece 9 and the third lock piece 10 so as not to engage with each other. In addition, the first fast-forward operation lever 17
Engagement holes 25 and 26 are formed in the second fast-forward operation lever 21, respectively. A control 27 is rotatably attached to the fixed base plate 2 by a shaft 28, and has a connecting hole 29 into which a connecting pin 3 fixed to the reproduction direction switching sliding plate 1 is inserted. A first arm 31 which is a lever and has an engagement pin 30 inserted into an engagement hole 25 formed in the first fast-forward operating lever 17 and the second fast-forward operating lever 21. A second arm 33 is provided with an engagement pin 32 inserted into the engagement hole 26 formed therein. 34 is a switching spring attached to the end of the first arm 31 constituting the control lever 27 by a mounting shaft 35;
The biasing position is regulated by a bent piece 36 formed at the end of the first arm 31, and a first pressing spring portion 37 and a second pressing spring portion 38 are provided. 39 is rotatably attached to the fixed base plate 2 by a shaft 40, and a switching pin 41 receives a pressing force from the first pressing spring portion 37 and the second pressing spring portion 38 of the switching spring 34. This is the attached rotating member. 42 is a drive gear rotatably attached to the shaft 40 of the rotating member 39, and the rotation of the electric motor (not shown) is transmitted at low speed during regeneration operation and at high speed during fast forward operation. is configured to be 43 is a transmission gear which is rotatably attached to the rotation member 39 by a shaft 43a and is always in mesh with the drive gear 42;
A first drive unit that drives the magnetic tape in the first direction during a playback operation in the first direction and a fast forward operation in the first direction.
A second reel shaft (not shown) has the function of transmitting rotation to a reel shaft (not shown) and drives the magnetic tape in the second direction during playback operation in the second direction and fast forward operation in the second direction. ) has the effect of transmitting rotation to. 44 is a shaft 45 attached to the fixed board 2
It is a trigger member which is rotatably mounted by a spring 46 and biased counterclockwise by a spring 46, and is a trigger member which is rotatably mounted by
A roller 47 that comes into contact with the trigger control section 4 formed in the trigger control section 4 is attached, and a contact section 48 that comes into contact with the trigger control pin 16 and a regulation pin 49 that controls the operation of a switching gear described later are formed. . FIG. 6 shows a mechanism for displacing the playback direction switching sliding plate 1 from the first position to the second position and from the second position to the first position using the rotational force of the electric motor. Reference numeral 50 denotes a switching drive gear which is rotatably mounted by a shaft 51 and rotates clockwise upon transmission of the rotation of the electric motor when in the regeneration operation state. Reference numeral 52 denotes a switching gear which is rotatably mounted on a shaft 53 and is formed with first and second toothless parts 54 and 55, and is formed on the reproduction direction switching sliding plate 1. A pressing pin 56 is attached to be inserted into the control hole 5 and press the playback direction switching sliding plate 1 to the first position or the second position by rotating the switching gear 52 in a counterclockwise direction. A cam 57 is formed on the surface of the switching gear 52 opposite to the surface on which the pressing pin 56 is attached, and is a cam formed on the trigger member 44 when the trigger member 44 is in the non-trigger position. A first blocking portion 58 and a second blocking portion 59 are formed which engage with the regulating pin 49 to prevent further rotation of the switching gear 52. A spring 60 is wound around and attached to the shaft 61, and is in constant contact with the cam 57 formed on the switching gear 52.
2 in a counterclockwise direction about the shaft 53. Although the present invention is constructed as described above, FIGS. 1, 2, 3, 4, and 5 show the rotation of the switching gear 52 due to its meshing with the switching drive gear 50. The press pin 56 is displaced by
Only shown.

The reproduction direction switching device of the present invention is constructed as described above, and its operation will be explained next. When in the stopped state shown in FIG. 1, the sliding base plate 12, the first fast-forward operating lever 17, and the second fast-forward operating lever 21 are in non-operating positions. When the sliding board 12 is in the non-operating position, the trigger control pin 16 attached to the sliding board 12 is connected to the trigger member 4.
4, and the trigger member 44 is kept displaced at the illustrated trigger position.
A regulating pin 49 formed on the trigger member 44 when the trigger member 44 is in the trigger position.
Since the cam 57 is not restricted by the cam 57, the switching gear 52 is in mesh with the switching drive gear 50 due to the biasing force of the spring 60. However, since the switching drive gear 50 is in a non-rotating state, the switching gear 52 is not rotated. In addition, when in such a stopped state, the reproduction direction switching sliding plate 1 is operated by the first fast-forward operating lever 17 and the second fast-forward operating lever 17.
The control lever 27 is held in an intermediate position by the urging force of the springs 18 and 22, which urge the fast-forward operating lever 21 toward the non-operating position.

When the user presses the regeneration operation button 14 in the direction of arrow D in the above-described stopped state, the sliding board 12 is displaced to the operating position against the biasing force of the spring 12, and the sliding board 12 An engaging protrusion formed on the sliding base plate 12 engages with a first locking piece 8 formed on the locking member 6, and the sliding base plate 12 is locked in the operating position. When the sliding base plate 12 is displaced to the operating position, the restraining force on the trigger member 44 by the trigger control pin 16 is cut off, so that the trigger member 44 is rotationally displaced to the non-triggering position by the biasing force of the spring 46. A state is reached in which the regulating pin 49 formed on the trigger member 44 regulates the cam 57. When the sliding substrate 12 is moved to the operating position, power is supplied to the electric motor and it starts rotating, and the rotation is transmitted to the switching drive gear 50. When the switching drive gear 50 starts rotating, the switching gear 52 meshed with the drive gear 50 is rotated counterclockwise in FIG. 6. When the switching gear 52 rotates to a predetermined position, the first toothless portion 54 provided on the switching gear 52 releases the switching drive gear 50, and the regulating pin 49 formed on the trigger member 44 is released. It engages with a first blocking portion 58 formed on the cam 57 and becomes in a state of blocking further rotation of the switching gear 52. FIG. 6 shows a state in which such a switching operation is performed. When the regeneration operation is performed in this manner, the switching gear 52 rotates to a predetermined position, so that the control hole 5 of the pressing pin 56 formed in the switching gear 52 rotates to a predetermined position.
The reproduction direction switching sliding plate 1 is displaced to the first position in the direction of arrow A by the pressing force on the edge 5a. The state shown in FIG. 2 shows a state in which such an operation has been performed, and when the reproduction direction switching sliding plate 1 is displaced to the first position, the reproduction direction switching sliding plate 1 and the connecting pin 3 The control lever 27 connected by the lever 27 is rotated clockwise about the shaft 28. When the control lever 27 is rotated clockwise, the switching spring 34 attached to the first arm 31 constituting the control lever 27 causes the rotation member 39 to rotate counterclockwise about the shaft 40. Dynamic displacement is caused. When the rotating member 39 rotates counterclockwise, the rotating member 39
A transmission gear 43 rotatably attached to the reel is in mesh with a gear (not shown) that transmits rotation to the first reel shaft that performs winding in the first direction. During the regeneration operation, the drive gear 42 is driven to rotate at a low speed, so that a drive operation for regeneration of the first reel shaft is performed. Further, when the playback direction switching sliding plate 1 is displaced to the first position, the first
The first step performs a constant speed driving operation of the magnetic tape in the direction
A pinch roller (not shown) is pressed against the first capstan shaft 62 to drive the magnetic tape at a constant speed. In this way, the tape recorder is brought into a state of playback operation in the first direction, and when the tape recorder is in the playback state, the trigger member 44 is in the non-trigger position, and the roller 47 attached to the trigger member 44 is not shown. As shown in FIG. Also, when in the regeneration state in the first direction, the control lever 2
7 is in a clockwise rotationally displaced state, the first fast-forward operation lever 17 is moved by the pressing force of the engagement pin 30 formed on the control lever 27 against the edge 25a of the engagement hole 25. It is in a state where it is slightly displaced in the direction of arrow D. Therefore, the first fast-forward operation button 19 is in a deeper position than the second fast-forward operation button 23.

As described above, the operation is performed when the reproducing operation is performed from the stopped state.Next, the switching operation from the reproducing operating state in the first direction to the reproducing operating state in the second direction will be described. When the second fast-forward operation button 23 is pressed while the tape recorder is in the playback operation state in the first direction shown in FIG. At this time, the engaging protrusion 24 formed on the operating lever 21 engages the third locking piece 10 formed on the locking member 6.
will not engage with. When the second fast-forward operating lever 21 is displaced in the direction of arrow D, the edge 26b of the engagement hole 26 formed in the operating lever 21 engages the pin 32 attached to the second arm 33 constituting the control lever 21. In order to press , the control lever 27 is rotated counterclockwise about the shaft 28. When the control lever 27 is rotated counterclockwise, the reproduction direction switching sliding plate 1 connected to the control lever 27 by the connecting pin 3 is displaced in the direction of arrow B. When the playback direction switching sliding plate 1 is displaced in the direction of arrow B, the trigger control section 4 formed on the sliding plate 1 moves to the roller 4 attached to the trigger member 44.
7, the trigger member 44 is displaced clockwise to the trigger position against the biasing force of the spring 46. When the trigger member 44 is rotationally displaced to the trigger position, the trigger member 4
Cam 57 by regulating pin 49 formed in 4
Regulatory power is cut off. As a result, the switching gear 52 on which the cam 57 is formed is slightly rotated counterclockwise by the pressing force of the spring 60 on the cam 57, and the switching gear 52 meshes with the switching drive gear 50. . As a result of this meshing operation, the switching gear 52 is rotated counterclockwise again. In this way, the switching gear 52 is rotated counterclockwise, and when the second toothless portion 55 formed on the switching gear 52 rotates to a position corresponding to the switching drive gear 50, the switching occurs. The gear 52 and the switching drive gear 50 are disengaged. When the switching gear 52 rotates in this way, the pressing pin 56 formed in the switching gear 52 moves into the control hole 5 formed in the playback direction switching sliding plate 1.
The playback direction switching sliding plate 1 is moved in the direction of arrow B, that is, to the second position. When the playback direction switching sliding plate 1 is displaced to the second position, the trigger member 44 which had been displaced to the trigger position
is rotated back to the non-trigger position, the regulating pin 49 formed on the trigger member 44 engages with the second blocking portion 59 formed on the cam 57, preventing further rotation of the switching gear 52. become a state of prevention. When the second fast forward operation button 23 is operated in this manner, the reproduction direction switching sliding plate 1 is displaced to the second position by the rotational force of the electric motor. The state shown in FIG. 3 shows a state in which such an operation has been performed, and when the reproducing direction switching sliding plate 1 is displaced to the second position, the reproducing direction sliding plate 1 and the connecting pin 3
A control lever 27 connected by a shaft 28
It is rotated counterclockwise around . When the control lever 27 is rotated counterclockwise, the first arm 31 forming the control lever 27
The rotating member 39 is rotated clockwise about the shaft 40 by the switching spring 34 attached to the switching spring 34 . When the rotating member 39 rotates clockwise, a transmission gear 43 rotatably attached to the rotating member 39 transmits rotation to a second reel shaft that performs winding in the second direction. (not shown). During the regeneration operation, the drive gear 42 is driven to rotate at a low speed, so that a drive operation for regeneration of the second reel shaft is performed. Further, when the playback direction switching sliding plate 1 is displaced to the second position, a second pinch roller (not shown) for driving the magnetic tape at a constant speed in the second direction is pressed against the second capstan shaft 63 and the magnetic tape is moved to the second position. A state is reached in which the tape is driven at a constant speed. In this way, the tape recorder is brought into a state of playback operation in the second direction, and in this playback state, the trigger member 44 is in the non-trigger position, and the roller 47 attached to the trigger member 44 is not shown. The second inclined portion 4 of the trigger control portion 4 formed on the playback direction switching sliding plate 1 as shown in FIG.
It comes into contact with b. In addition, when the control lever 27 is in the regeneration state in the second direction, the control lever 27 is in a state of being rotationally displaced in the counterclockwise direction, so that the engagement hole 26 of the engagement pin 32 formed in the control lever 27
Due to the pressing force on the edge 26a, the second fast-forward operating lever 21 is slightly displaced in the direction of arrow D. Therefore, the second fast forward operation button 23
is in a state where its position is deeper than that of the first fast-forward operation button 19. When the second fast-forward operation button 23 is operated while the reproduction operation state is in the first direction, the switching operation to the reproduction operation state in the second direction is performed as described above. At this time, when the first fast-forward operation button 19 is operated, the first fast-forward operation lever 17 is displaced in the direction of arrow D, but the displacement of the control lever 27 by the operation lever 17 is absorbed by the switching spring 34 and driven. It has no effect on the mechanism, etc.

As described above, the switching operation from the regeneration operation state in the first direction to the regeneration operation state in the second direction is performed, but then the switching operation from the regeneration operation state in the second direction to the regeneration operation state in the first direction is performed. The switching operation will be explained. When the tape recorder is in the state of playback operation in the second direction shown in FIG. 3, when the first fast-forward operation button 19 is pressed, the first fast-forward operation lever 17 to which the operation button 19 is attached is activated by a spring. At this time, the engaging protrusion 20 formed on the operating lever 17 engages with the second locking piece 9 formed on the locking member 6. There isn't. When the first fast-forward operating lever 17 is displaced in the direction of arrow D, the engagement hole 2 formed in the operating lever 17
5 presses the engagement pin 30 attached to the first arm 31 constituting the control lever 27, so that the control lever 27 is rotated clockwise about the shaft 28. When the control lever 27 is rotated clockwise, the reproduction direction switching sliding plate 1 connected to the control lever 27 by the connecting pin 3 is displaced in the direction of arrow A. When the playback direction switching sliding plate 1 is displaced in the direction of arrow A, the trigger control section 4 formed on the sliding plate 1 presses the roller 47 attached to the trigger member 44, so that the trigger member 44 acts as a spring. 46 and is displaced clockwise to the trigger position. When the trigger member 44 is moved to the trigger position, the switching gear 52 is rotated to a predetermined position as described above, and the switching gear 52 is regenerated by the pressing force of the pressing pin 56 formed on the switching gear 52. The direction switching sliding plate 1 is moved to the first position.
As a result of this operation, the tape recorder enters the state of playback operation in the first direction shown in FIG. In this way, when the first fast-forward operation button 19 is operated while the playback operation is in the second direction, the first
A switching operation to a reproducing operation state in the direction is performed. At this time, when the second fast-forward operation button 23 is operated, the second fast-forward operation lever 21 is displaced in the direction of arrow D, but the displacement of the control lever 27 by the operation lever 21 is absorbed by the switching spring 34 and driven. It has no effect on the mechanism, etc.

As described above, the reproduction operation in the first direction and the second direction and the reproduction direction switching operation are performed. Next, the fast forward operation in the first direction and the second direction will be explained. When the tape recorder is in the stopped state shown in FIG. 1 and the first fast-forward operation button 19 is pressed, the first fast-forward operation lever 17 moves against the biasing force of the spring 18 to the operating position in the direction of arrow D. is displaced. When the first rapid-forward operating lever 17 is displaced to the operating position, the operating lever 1
The engaging protrusion 20 formed on the locking member 6
Since it engages with the second locking piece 9 formed in the front, the fast-forward operation lever 17 is locked and held in the operating position. When the fast-forwarding operation lever 17 is moved to the operating position, the edge 25b of the engagement hole 25 formed in the operation lever 17 moves into the first position of the control lever 27.
In order to press the engagement pin 30 attached to the arm 31, the control lever 27 is rotated clockwise about the shaft 28. When the control lever 27 is pivoted clockwise, the switching spring 34 attached to the first arm 31 of the control lever 27 causes the pivot member 39 to move toward the shaft 40.
It is rotated counterclockwise around . When the rotating member 39 rotates counterclockwise, the transmission gear 43 rotatably attached to the rotating member 39 becomes a gear that transmits rotation to the first reel shaft for winding in the first direction. They become engaged. During the fast-feeding operation, the drive gear 42 is rotated at high speed, so that a driving operation for fast-feeding the first reel shaft in the first direction is performed. In this way, the fast-forward operation state in the first direction is configured, and at this time, the playback direction switching sliding plate 1 is displaced to the first position as the control lever 27 is rotated, but the sliding board 12 is moved to the first position. Since it is in the non-operating position, the mechanism for regeneration such as the trigger member 44 does not operate. FIG. 4 shows the state of such fast forwarding operation in the first direction.

As described above, the fast forward operation in the first direction is performed, but next, the fast forward operation in the second direction will be explained. When the tape recorder is in the stopped state shown in FIG. 1, when the second fast-forward operation button 23 is pressed, the second fast-forward operation lever 21 moves against the urging force of the spring 22 to the operating position in the direction of arrow D. is displaced. When the second fast-forward operation lever 21 is moved to the operating position, the engagement protrusion 24 formed on the operation lever 21 engages with the third lock piece 10 formed on the lock member 6, so that the fast-forward operation is performed. Lever 21 is held locked in the operating position. When the fast-forward operation lever 21 is moved to the operating position, the edge 26b of the engagement hole 26 formed in the operation lever 21 presses the engagement pin 32 attached to the second arm 33 of the control lever 27. The control lever 27 is pivoted counterclockwise about the shaft 28. When the control lever 27 is pivoted counterclockwise, the switching spring 34 attached to the first arm 31 of the control lever 27 causes the pivot member 39 to move toward the shaft 4.
It is rotated clockwise around 0. When the rotating member 39 rotates clockwise, a transmission gear 43 rotatably attached to the rotating member 39 meshes with a gear that transmits rotation to the second reel shaft that performs winding in the second direction. Becomes in a state of ivy. During the fast feed operation, the drive gear 42 is driven to rotate at high speed, so that the second
A driving operation for rapid forwarding in the direction will be performed. In this way, the fast-forward operation state in the second direction is configured, and at this time, the reproduction direction switching sliding plate 1 is displaced to the second position as the control lever 27 is rotated. Since the trigger member 44 and the like are in the non-operating position, the mechanism for regeneration such as the trigger member 44 does not operate. FIG. 5 shows the state of such fast forwarding operation in the second direction.

Each operation in this embodiment is performed as described above, and when the stop operation button 11 is in each operation state,
When the lock member 6 is pressed, the lock member 6 is displaced in the direction of arrow A against the biasing force of the spring 7.
When the lock member 6 is displaced in the direction of arrow A, the first lock piece 8, the second lock piece 9 and the third lock piece 10
Since the engagement state with the engagement protrusions 15, 20, and 24 is released, the sliding base plate 12, the first fast-forward operation lever 17, and the second fast-forward operation lever 21, which were in the operating position, return to the non-operating position. Then, the tape recorder is switched to a stopped state.

As explained above, when in the state of playback operation in the first direction, the operation in the second direction can be performed by operating the second fast-forward operation button 23 provided to perform fast-forward operation in the second direction. A first fast-forward operation button 19 is provided to perform a fast-forward operation in the first direction when the reproduction direction is switched and the reproduction operation is in the second direction.
The playback direction is switched to the first direction by operating the button, but since the fast-forward operation button that is operated for such switching is protruded compared to the other fast-forward operation button, The button to be operated can be easily recognized and the switching operation can be easily performed even when both operation buttons are arranged close to each other.

(G) Effects of the Invention The playback direction switching device of the present invention allows the first fast-forward operation button provided for fast-forwarding in the first direction to be operated when the playback direction is in the second direction. to switch the playback direction to the first direction, and operate the second fast-forward operation button provided to perform fast-forward operation in the second direction when the playback operation is in the first direction. By doing so, the playback direction can be switched to the second direction, so there is no need to provide a separate operation button for switching the playback direction of the magnetic tape, making it suitable for ultra-small tape recorders. . In addition, the fast-forward operation button that is operated to switch the playback direction is made to protrude more than the other fast-forward operation button, so that the button to be operated can be easily recognized and the two fast-forward operation buttons can be operated. The present invention has the advantage that the switching operation can be performed easily and reliably even if the switches are arranged close to each other. Furthermore, the present invention is characterized in that the playback direction is switched by operating an operation button related to the running direction of the magnetic tape, so that an excellent switching operation feeling can be obtained.

[Brief explanation of the drawing]

The drawings all relate to the playback direction switching device of the present invention; FIG. 1 is a plan view showing the stop state, FIG. 2 is a plan view showing the playback state in the first direction, and FIG.
4 is a plan view showing a fast forwarding state in the first direction, FIG. 5 is a plan view showing a fast forwarding state in the second direction, and FIG. 6 is a plan view showing the playing direction switching slide. It is a top view of the principal part which shows the displacement mechanism of a moving plate. Explanation of main drawing numbers, 1... Playback direction switching sliding plate,
6...Lock member, 11...Stop operation button, 12
...Sliding board, 14...Reproduction operation button, 17...
First fast-forward operation lever, 19...First fast-forward operation button, 21...Second fast-forward operation lever, 23
...Second fast forward operation button, 27...Control lever,
42... Drive gear, 43... Transmission gear, 44...
Trigger member, 50...Switching drive gear, 52...
...Switching gear.

Claims (1)

[Claims] 1. In a tape recorder having a playback function in a first direction and a playback function in a second direction opposite to the first direction, the drive mechanism is moved to the first position by displacement from the second position to the first position during playback operation. a regeneration direction switching sliding plate which switches the drive mechanism to a state where it performs a regeneration operation in the second direction and also switches the drive mechanism to a state where it performs the regeneration operation in the second direction by displacement from the first position to the second position, and when in a stopped state; A first button that is displaced to the operating position by operating the first fast-forwarding operation button and puts the drive mechanism into the fast-forwarding operating state in the first direction.
The fast-forward operation lever and the second
a second fast-forward operation lever that is moved to an operating position by operation of the fast-forward operation button and puts the drive mechanism into a fast-forward operation state in a second direction; Second
Transmitting the displacement of the fast-forwarding operating lever to the operating position to the playback direction switching sliding plate, and transmitting the displacement of the first fast-forwarding operating lever to the operating position when the playing direction switching sliding plate is in the second position. a control lever that transmits transmission to the playback direction switching sliding plate, and when the tape recorder is in a playback operation state in the first direction, the control lever is transmitted to the playback direction switching sliding plate as the playback direction switching sliding plate is moved to the first position. causing the first fast-forward operation button to be slightly displaced in the direction of the operating position by the displacement;
The second fast-forward operation button is made to protrude from the first fast-forward operation button, and when the tape recorder is in a state of playback operation in the second direction, the playback direction switching sliding plate is moved to the second position. The second fast-forward operation button is slightly displaced in the direction of the operating position by the displacement of the control lever, so that the first fast-forward operation button is made to protrude from the second fast-forward operation button. A device for switching the playback direction of a tape recorder.