JPH0412534B2 - - Google Patents

Description

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

(b) Prior Art Recently, an audio device called a head-on stereo, in which the reproduced sound of a magnetic tape is listened to using a head-on, has become popular. The tape recorder incorporated in such an audio device has not only a playback function in the first direction but also a playback function in the second direction opposite to the first direction so that playback operation can be performed for a long time. Reciprocating tape recorders are common. Such a reciprocating tape recorder is equipped with a playback direction switching knob for switching the playback direction, in addition to the playback operation knob and fast forward operation knob, etc. that are provided in a tape recorder having a unidirectional playback function. . A tape recorder equipped with such an operating knob for switching the playback direction has the drawback that the number of knobs increases, making the structure complex and the operability poor.

(c) Object of the Invention The present invention aims to provide an operation switching device for a reciprocating tape recorder that has a simple configuration and excellent operability.

(D) Structure of the Invention The present invention provides a reciprocating tape recorder having a playback function in a first direction and a playback function in a second direction opposite to the first direction. operation knob to fast forward the tape recorder in the first direction and in the second direction.
a fast-forward operating knob for switching to a fast-forwarding state in a direction, and when the tape recorder is in a stopped state and the fast-forwarding operating knob is operated, a fast-forwarding operation is performed in the first direction or the second direction, and the tape recorder When the magnetic tape is in the playback state, operating the fast forward operation knob causes the magnetic tape to be played in the first direction.
The direction is configured to be switched from the direction to the second direction and from the second direction to the first direction.

(E) Embodiments The drawings are all related to the present invention; FIG. 1 is an external perspective view of a tape recorder according to the present invention, FIGS. 2 and 3 are plan views showing different states of the drive mechanism,
Figure 4 is a side view of the main parts showing the drive mechanism; Figure 5;
6 and 7 are plan views showing different states of the transmission mechanism. In FIG. 1, reference numeral 1 denotes a tape recorder main body, and a cassette mounting section 2 into which a cassette tape is mounted is provided on the bottom surface. 3
4 is a playback operation knob provided on the front surface of the tape recorder main body 1, and 4 is a fast forward operation knob that controls fast forwarding at a first position for fast forwarding in the first direction, a stop position, and fast forwarding in the second direction. and is configured to be displaced to a second position for performing the operation. Reference numeral 5 denotes a stop operation knob that is operated when the tape recorder is in an operating state and stops the tape recorder.

Although the operating system according to the present invention is constructed as described above, the drive system will now be explained with reference to FIGS. 2, 3, and 4. In the figure, 6 is axis 7
It is a rotary arm which is rotatably attached to a fixed base plate (not shown) by a rotary arm and which is normally in the high speed drive position shown in FIG. It is configured to be displaced to the reproduction drive position shown in the figure. 8 is a drive gear rotatably attached to the shaft 7 on which the rotating arm 6 is attached, and to which rotation of an electric motor (not shown) is transmitted; 9 is a drive gear mounted on the rotating arm 6 and connected to the shaft 10; Therefore, it is a high-speed drive gear that is rotatably mounted and always in mesh with the drive gear 8, and a regeneration drive gear 11 is integrally formed therewith. 12 is screw 1 on the fixed board
3, 14, and 15, a mounting board 16 is rotatably mounted to the mounting board 12 by a shaft 17, and the pivot arm 6
is in the regeneration drive position, the regeneration drive gear 1
1, a second drive gear 18 is rotatably mounted on the shaft 17, and the rotation of the first drive gear 16 is transmitted via a felt 19 constituting a clutch mechanism; A main drive gear 20 is attached to the shaft 17 so as to rotate integrally with the second drive gear 18. 21
23 is a third driving gear rotatably attached to the mounting board 12 by a shaft 22 and meshing with the driving gear 9 when the rotating arm 6 is in the high-speed drive position; A fourth drive gear is rotatably attached to the shaft 24 by a shaft 24 and is always in mesh with the second drive gear 18 and the third drive gear 21. It has the function of transmitting information to the second drive gear 18. The drive system is configured in this manner, and in the regenerative operation state, the rotation of the electric motor is as follows: drive gear 8 - high speed drive gear 9 - regeneration drive gear 11
It is transmitted to the main drive gear 20 via - the first drive gear 16 - the felt 19 - the second drive gear 18. In addition, in the fast-forward operation state, the rotation of the electric motor is from the drive gear 8 to the high-speed drive gear 9 to the third drive gear 21 to the fourth drive gear.
It is transmitted to the main drive gear 20 via the drive gear 23-second drive gear 18.

Although the drive system according to the present invention is constructed as described above, the transmission system will be explained next with reference to FIGS. 5, 6, and 7. Reference numeral 25 denotes a first reel shaft which is rotationally driven during playback operation in the first direction and during fast forwarding operation, and is rotatably attached to a fixed substrate by a shaft 26 and has a gear 27 formed thereon. Reference numeral 28 denotes a second reel shaft which is rotatably driven during playback operation and fast forward operation in a second direction opposite to the first direction, and is rotatably attached to a fixed substrate by a shaft 29 and is connected to a gear. 30 is formed. Reference numeral 31 denotes a switching lever rotatably attached to a fixed base plate by a shaft 32, and the switching lever 31 can be moved from a first position to a stop position and then to a second direction using the fast-forward operation knob 4 to perform fast-forwarding in the first direction. is moved to the second position where rapid forwarding is performed. Reference numeral 33 denotes a rotating plate that is rotatably mounted around the shaft 26 to which the first reel shaft 25 is attached, and is an engagement plate that engages with the engagement portion 34 formed on the switching lever 31. A piece 35 is formed. In such a configuration, the switching lever 31
When the rotating plate 33 is displaced from the stop position shown in FIG. 5 to the first position shown in FIG. When displaced to the second position, the rotary plate 33 is associated so as to be displaced clockwise about the shaft 26 to a second operating position. Reference numeral 36 denotes an intermediate gear rotatably attached to the fixed base plate by a shaft 37, and is meshed with the gear 30 formed on the second reel shaft 28. 38 is a shaft 39 on the rotating plate 33.
a first transmission gear which is rotatably attached to the first reel shaft 25 and meshed with the gear 27 formed on the first reel shaft 25, when the rotating plate 33 is in the first operating position. The main drive gear 2
It is configured to mesh with 0. 40 is a second transmission gear rotatably mounted on the rotary plate 33 by a shaft 41, and when the rotary plate 33 is in the second operating position, the main drive gear 20 and the intermediate gear 36 It is structured to fit perfectly.

As described above, the operating system, drive system, and transmission system according to the present invention are constructed so that when the regeneration operating knob 3 is operated from the stopped state, the switching lever 31 is rotated from the stopped position to the first position. It is composed of Further, the switching lever 31 is in the first position,
It is configured to be locked at the stop position and the second position by a click mechanism or the like, and is configured to be displaced to each position by operating the fast-forward operation knob 4. . Even if the fast forward operation knob 4 is operated when the reproduction operation knob 3 is in the operating position, the reproduction operation knob 3 will not be returned to the non-operation position. Further, if a stop operation is performed in each operating state, the playback operation knob 3 is returned to the non-operation position, and the fast forward operation knob 4 is returned to the stop position.

The present invention is constructed as described above, and its operation will be explained next. When the tape recorder is in a stopped state, the rotating arm 6 is in the high-speed drive position shown in FIG. 2, and the switching lever 31 operated by the fast-forward operation knob 4 is in the stop position shown in FIG. be. In this state, when the user operates the regeneration operation knob 3, the rotating arm 6 is displaced to the regeneration driving position shown in FIG. 3, and the switching lever 31 is moved to the first position shown in FIG. rotational displacement. Further, in connection with such a reproducing operation, the magnetic head comes into contact with the magnetic tape, the pinch roller is pressed against the capstan, and power is supplied to the electric motor. Although the regeneration operation is configured in this way, the rotation from the electric motor is mainly carried out through the drive gear 8 - the high speed drive gear 9 - the regeneration drive gear 11 - the first drive gear 16 - the felt 19 - the second drive gear 18. The signal is transmitted to the drive gear 20, and the main drive gear 20 is rotated at low speed in the direction of the arrow. When the switching lever 31 is rotationally displaced to the first position, the first transmission gear 38 is in mesh with the main drive gear 20, so that the rotation of the main drive gear 20 is caused by the rotation of the first transmission gear 38. via the gear 27, i.e. the first
The signal is transmitted to the reel shaft 25. In this manner, the rotation of the electric motor is transmitted to the first reel shaft 25, resulting in a reproducing operation in the first direction. When the regeneration operation is in the first direction, the switching lever 31 is in the first position.
The fast-forward operation knob 4 attached to the tape recorder body 1 has the symbol A provided on the front of the tape recorder body 1.
It is located on the side. Therefore, the user:
Since the fast forward operation knob 4 is located on the side of the symbol A, it can be recognized that the reproduction operation in the first direction is being performed. Although the reproducing operation in the first direction is performed in this way, the reproducing operation in the second direction, which is the opposite side of the first direction, will be explained next. The reproducing operation in the second direction is performed by moving the fast forward operation knob 4 to the second position indicated by symbol B when the tape recorder is in the reproducing operation state in the first direction. .
When the fast-forward operating knob 4 is moved toward the symbol B side, the switching lever 31 is rotated counterclockwise about the shaft 32, resulting in the state shown in FIG. 7. When the switching lever 31 is in the second position shown in FIG.
6 is engaged. Therefore, main drive gear 2
The rotation of 0 is transmitted to the gear 30, that is, the second reel shaft 28, via the second transmission gear 40 and the intermediate gear 36. As a result of the rotation of the electric motor being transmitted to the second reel shaft 28 in this manner, a reproducing operation is performed in the second direction, but it goes without saying that the magnetic head and pinch roller are also switched to the opposite direction at the same time. Since the fast-forward operation knob 4 attached to the switching lever 31 is positioned on the symbol B side when in the reproducing operation state in the second direction,
The user can recognize that the reproduction operation in the second direction is being performed. In this way, when the reproduction operation is being performed in the first direction, the operation of switching the reproduction direction to the second direction is performed, but the operation of switching the reproduction direction from the second direction to the first direction is also performed in the same manner. Therefore, its explanation will be omitted. Further, when the tape recorder is in the state of playback operation in the first direction or the second direction, when the stop operation knob 5 is operated, the playback operation knob 3 is returned to the non-operating position and the fast forward operation knob 4 is activated. It is returned to the stop position shown in FIG.

As described above, when the playback operation knob 3 is in the operating position, when the fast forward operation knob 4 is moved to the first and second positions, the tape recorder enters the playback operation state in the first and second directions. When the operator places the fast-forward operation knob 4 at the stop position, the first transmission gear 38 and the second transmission gear 4 are moved as shown in FIG.
0 is in a state where they are both spaced apart from the main drive gear 20. Therefore, the rotation of the main drive gear 20 is not transmitted to the first reel shaft 25 and the second reel shaft 28, and in this state, if the pinch roller is separated from the capstan, the tape recorder can be temporarily stopped. It can be done. If the fast-forward operating knob 4 is moved to the first or second position during such a paused state, the playback operation in the first or second direction can be started again.

The reproduction operation is performed as described above, but the fast-forward operation will be explained next. Such fast-forward operation is performed by operating the fast-forward operation knob 4 when the tape recorder is in a stopped state.
First, the fast forwarding operation in the first direction will be explained.
When the fast-forward operating knob 4 is placed in the first position, that is, on the side marked A when the tape recorder is in a stopped state, the switching lever 31 is rotated to the position shown in FIG. As a result, the rotating plate 33 is rotated,
The first transmission gear 38 mounted on the rotary plate 33 is brought into mesh with the main drive gear 20. In addition, in such a fast-forwarding state, the rotating arm 6 is in the high-speed drive position shown in FIG.
1 - fourth drive gear 23 - transmitted to the main drive gear 20 via the second drive gear 18, and the main drive gear 20
is rotated at high speed in the direction of the arrow. When the switching lever 31 is rotated to the first position, the main drive gear 20 is connected to the first transmission gear 3.
8 are in mesh, the rotation of the main drive gear 20 is transmitted to the gear 27, that is, the first reel shaft 25, via the first transmission gear 38. As a result of the rotation of the electric motor being transmitted to the first reel shaft 25 in this manner, a fast feed operation in the first direction is performed. If the fast-forward operation knob 4 is operated to the stop position while the fast-forward operation in the first direction is being performed, or the stop operation knob 5 is operated, the fast-forward operation is canceled and the tape recorder stops. It becomes stopped.

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. The fast-forward operation in the second direction is performed by positioning the fast-forward operation knob 4 at the second position, that is, on the side marked B when the tape recorder is in a stopped state. The fast forward operation knob 4
When the switching lever 31 is moved to the symbol B side, the switching lever 31 is rotated to the position shown in FIG.
and becomes in mesh with the intermediate gear 36. In the fast forward operation state, as described above, the rotation of the electric motor is transmitted to the main drive gear 20 at high speed, and the rotation of the main drive gear 20 is transmitted to the second transmission gear 40 and the intermediate gear 36.
The signal is transmitted to the gear 30, ie, the second reel shaft 28, via the. As a result of the rotation of the electric motor being transmitted to the second reel shaft 28 in this manner, a fast feed operation in the second direction is performed. If the fast forward operation knob 4 is moved to the stop position while the fast forward operation in the second direction is being performed, or the stop operation knob 5 is operated, the fast forward operation is canceled and the tape recorder stops. become a state.

(F) Effects of the Invention The operation switching device of the present invention is capable of switching the first direction from the first direction.
switching to a second direction, which is the opposite direction, and the second direction.
Since switching of the playback direction from the first direction to the first direction is performed by a fast-forward operating knob that performs fast-forwarding operations in the first and second directions, it is necessary to provide a special operating knob for switching the playback direction. The present invention is most suitable as an operation switching device for a reciprocating tape recorder, since the structure is simple and the operability is excellent.

[Brief explanation of drawings]

The drawings all relate to the operation switching device of the present invention,
FIG. 1 is an external perspective view of a tape recorder according to the present invention, FIGS. 2 and 3 are plan views showing different states of the drive mechanism, FIG. 4 is a side view of the main parts of the drive mechanism, and FIG. 5 , 6 and 7 are plan views showing different states of the transmission mechanism. Explanation of main figure numbers, 3... Operation knob for reproduction, 4...
...Operation knob for fast forwarding, 5...Operation knob for stopping, 6
...Rotating arm, 8... Drive gear, 9... High speed drive gear, 11... Regeneration drive gear, 12... Mounting board, 16... First drive gear, 18... Second drive gear, 20...Main drive gear, 21...Third drive gear, 23...Fourth drive gear, 25...First reel shaft, 28...Second reel shaft, 31...Switching lever, 33...Rotation Plate, 36... Intermediate gear, 38...
...first transmission gear, 40...second transmission gear.

Claims (1)

[Claims] 1 In a reciprocating tape recorder having a playback function in a first direction and a playback function in a second direction opposite to the first direction, a first reel shaft that winds a magnetic tape in a first direction, and a magnetic tape a second reel shaft that winds the tape in a second direction, a playback operation knob that puts the tape recorder into a playback state, and a fast-forward operation that switches the tape recorder between a fast-forward state in the first direction and a fast-forward state in the second direction. a knob, a drive gear that is rotationally driven when the electric motor is in a rotating state, and the rotation of the drive gear is transmitted at low speed through the regeneration drive gear and the slip mechanism during a regeneration operation, and the rotation of the drive gear is transmitted at a low speed through the regeneration drive gear and the slip mechanism during a fast forward operation. a main drive gear to which the rotation of the gear is transmitted at high speed via a high-speed drive gear; and a rotating plate that is rotationally displaced to a first operating position and a second operating position by operating the fast-forward operation knob. , is rotatably mounted on the rotating plate and meshes with the main drive gear when the rotating plate is in a first operating position, transmitting rotation of the main drive gear to the first reel shaft. a first transmission gear rotatably mounted on the rotating plate and meshing with the main drive gear when the rotating plate is in a second operating position, and transmitting rotation of the main drive gear to the second transmission gear; and a second transmission gear that transmits transmission to the reel shaft, and when the tape recorder is in a stopped state, the rotary plate is moved to the first operating position or the second operating position by operating the fast-forward operation knob. The rotation of the main drive gear in a high speed rotation state is transferred to the first reel shaft or the second reel shaft via the first transmission gear or the second transmission gear.
The signal is transmitted to the reel shaft, thereby performing a fast forward operation in the first direction or the second direction, and when the tape recorder is in the playback state, operating the fast forward operation knob causes the rotating plate to move from the first operating position. Due to the rotational displacement to the second operation position, the first transmission gear is disengaged from the main drive gear which is in a low speed rotation state, and the second
The meshing operation of the transmission gear is performed, and the rotational displacement of the rotary plate from the second operating position to the first operating position causes the meshing operation of the second transmission gear from the main drive gear in a low speed rotation state, and the second transmission gear is disengaged. The meshing operation of the first transmission gear is performed, and the reproduction direction of the magnetic tape is set to the first transmission gear.
1. An operation switching device for a reciprocating tape recorder, characterized in that the operation is switched from the direction to the second direction and from the second direction to the first direction.