JPH0476181B2 - - 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-small tape recorders are subject to restrictions on the mounting position of the operation button, so an operation button for switching the running direction is provided. The problem is where to do it. An example of a technique that solves this problem is disclosed in 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. Since the reproduction direction is switched by operating an unrelated reproduction 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 When the playback direction switching device of the present invention is operated in a stopped state, the drive mechanism is brought into a fast-forward operation state in a first direction, and the playback direction is also put into a playback operation in a second direction. a first fast-forward operation button which, when operated in the stopped state, switches the drive mechanism to a fast-forward operating state in the second direction; The second fast-forwarding operation button is configured to switch to a second direction playback operation state when operated in the playback operation state in the second direction.

(e) Effect The present invention utilizes a first fast-forward operation button and a second fast-forward operation button that are provided to switch between a fast-forward operating state in the first direction and a fast-forward operating state in the second direction. The playback direction is switched by the following steps.

(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. Reference numeral 17 is attached to the fixed base plate 2 so as to be movable in the directions of arrows C and D, and a spring 18 causes the arrow C to be in the non-operating position.
The first fast-forward operation lever is biased in the direction, and when the first fast-forward operation button 19 is attached and is in the fast-forward operation position, it is connected to the second lock piece 9 formed on the lock member 6. An engaging protrusion 20 is formed that engages and holds the first rapid-forward operation lever 17 in the 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; Second fast forward operation button 23
is attached and is in the fast-forward operation position, engages with the third lock piece 10 formed on the lock member 6, and the second fast-forward operating lever 21
An engaging protrusion 24 is formed to hold the holder in the operating position. In such a locking mechanism, when the sliding base plate 12 is held in the operating position by the engagement between the first locking piece 8 formed on the locking member 6 and the engaging protrusion 15, the first fast-forwarding operation is performed. The engaging protrusions 20 and 24 formed on the operating lever 17 and the second fast-forwarding operating lever 21 are related to the second locking piece 9 and the third locking piece 10 so as not to engage with them. In addition, the first rapid-forward operation lever 1
Engagement holes 25 and 26 are formed in the 7 and second fast-forward operation levers 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 the control lever 27
This is a switching spring that is attached to the end of the first arm 31 constituting the first arm 31 by a mounting shaft 35, and is biased to the biased position by a bent piece 36 formed at the end of the first arm 31. is regulated, and a first pressing spring section 37 and a second pressing spring section 38 are provided. Reference numeral 39 denotes a switching pin 41 which is rotatably attached to the fixed base plate 2 by a shaft 40 and receives pressing force from the first pressing spring portion 37 and the second pressing spring portion 38 of the switching spring 34.
It is a rotating member to which is attached. 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 Reference numeral 43 denotes 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, and is used during regeneration operation in the first direction and in the first direction. During the fast forward operation, the magnetic tape has the function of transmitting rotation to the first reel shaft (not shown) that drives the magnetic tape in the first direction, and during the reproduction operation in the second direction and the second reel shaft.
During a fast forward operation in the direction, the magnetic tape has the function of transmitting rotation to a second reel shaft (not shown) that drives the magnetic tape in the second direction. Reference numeral 44 denotes a trigger member which is rotatably attached to the fixed base plate 2 by a shaft 45 and urged counterclockwise by a spring 46, and is formed on the playback direction switching sliding plate 1. A roller 47 that comes into contact with 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. Figure 6 shows the playback direction switching sliding plate 1.
This figure shows a mechanism for displacing the motor from the first position to the second position and from the second position to the first position using the rotational force of an 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. The playback direction switching sliding plate 1 is inserted into the control hole 5 and rotates the switching gear 52 in a counterclockwise direction.
A pressing pin 56 is attached for pressing and displacing the terminal to the first position or the second position. 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. Regulation pin 49
A first blocking portion 58 and a second blocking portion 59 are formed which engage with the switching gear 52 and 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, urging the switching gear 52 counterclockwise about the shaft 53. It has an effect. 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 5 is displaced by
Only 6 is 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 13, and the sliding board 12 An engaging protrusion 15 formed on the sliding substrate 1 engages with a first lock piece 8 formed on the lock member 6.
2 is held locked in the operating position. The sliding substrate 1
2 is displaced to the operating position, the trigger control pin 16
Since the regulating force on the trigger member 44 is cut off, the trigger member 44 is rotationally displaced to the non-triggering position by the biasing force of the spring 46, and the cam 57 is moved by the regulating pin 49 formed on the trigger member 44. A state is reached in which a regulating operation is performed.
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 drive gear 50
The switching gear 52, which is in a meshed state, is rotated counterclockwise in FIG. When the switching gear 52 rotates to a predetermined position, the switching drive gear 5
0 is released and the trigger member 44
A regulating pin 49 formed on the cam 57 engages with a first blocking portion 58 formed on the switching gear 5.
2 becomes in a state that prevents further rotation. 6th
The figure shows a state in which such a switching operation is performed. When the regeneration operation is performed in this way, the switching gear 52 rotates to a predetermined position, so that the regeneration direction switching slide is moved by the pressing force of the pressing pin 56 formed on the switching gear 52 against the edge 5a of the control hole 5. The moving plate 1 is displaced to a first position in the direction of arrow A. 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 3
The transmission gear 43 rotatably attached to the reel 9 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 manner, the tape recorder is brought into a state of playback operation in the first 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. 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 engagement pin attached to the second arm 33 constituting the control lever 21. 32, 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
presses the roller 47 attached to the trigger member 44, so that the trigger member 44 is displaced clockwise to the trigger position against the biasing force of the spring 46. The trigger member 44
When the cam 5 is rotated to the trigger position, the cam 5 is moved by the regulating pin 49 formed on the trigger member 44.
The regulatory power to 7 is cut off. As a result, the cam 57
The switching gear 52 formed with the cam 57 is slightly rotated counterclockwise by the pressing force of the spring 60 against 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 on the switching gear 52
comes into contact with the edge 5b of the control hole 5 formed in the reproduction direction switching sliding plate 1, and displacing the reproduction direction switching sliding plate 1 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 4 which had been displaced to the trigger position
4 rotates 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. becomes a state that prevents 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 the reproduction direction switching sliding plate 1 is in the second position.
When moved to this position, the control lever 27, which is connected to the reproduction direction switching sliding plate 1 by the connecting pin 3, is rotated counterclockwise about the shaft 28. When the control lever 27 is rotated counterclockwise, the switching spring 34 attached to the first arm 31 constituting the control lever 27 causes the rotation member 39 to rotate clockwise about the shaft 40. Dynamic displacement is caused. 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 23 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 the 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. . Furthermore, since the playback direction is switched by operating an operation button related to the running direction of the magnetic tape, 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 information to the playback direction switching sliding plate, and when the tape recorder is in the playback operation state in the first direction, operating the second fast forward operation button causes the second
displacing the playback direction switching sliding plate to a second position by displacing the fast-forward operating lever to the operating position;
When the tape recorder is switched to a playback operation state in the second direction and the first fast-forward operation button is operated while the tape recorder is in the second direction playback operation state, the operation position of the first fast-forward operation lever is changed. 1. A playback direction switching device for a tape recorder, characterized in that the playback direction switching sliding plate is moved to a first position by displacement to switch the tape recorder to a playback operation state in the first direction.