JPH0430670Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention detects the no-signal portion between the signals of music etc. recorded on a magnetic tape in fast forward or rewind state, and Regarding a tape recorder having a song selection function that cancels the fast forward or rewind state and switches to the playback state when a signal section is detected,
In particular, it relates to a switching device for a music selection switch.

(b) Prior art Tape recorders equipped with a so-called music selection device that detects a no-signal section between signals of music recorded on a magnetic tape during fast forwarding or rewinding and automatically switches to playback mode have become widespread. However, some such tape recorders are capable of selecting not only one song but also several preset songs, as disclosed in Japanese Utility Model Application Publication No. 56-35181. A tape recorder having such a song selection function is equipped with a song selection switch that controls the song selection operation, and when the song selection switch is in the song selection state, that is, the playback operation button, fast forward operation button, or rewind operation button is pressed. It is arranged so that it can be switched when being operated. An example of such a switching device for a music selection switch is disclosed in Japanese Patent Publication No. 59-22297.

(c) Problems that the device is trying to solve The above-mentioned switching device has a music selection switch attached to a subchassis that is displaced to the playback position by the operation of the playback operation lever and retreats from the playback position by the operation of the high-speed driving operation lever, and the switching operation of the switch is performed by a subchassis shift lever that is provided to retreat the subchassis, so there are problems that the installation position of the music selection switch is restricted and the structure is complicated. The present device aims to provide a music selection switch switching device that improves on these points.

(d) Means for Solving Problems The switching device of the present invention has a playback operation lever that is moved to an operating position during a playback operation, and a drive mechanism that is moved to an operating position during a song selection operation in the playback direction. A fast-forward operation lever that switches to a fast-forward state, a rewind operation lever that is moved to an operating position when a music selection operation is performed in the opposite direction to the playback direction, and switches the drive mechanism to a rewind state, and a no-signal portion detection circuit, etc. a music selection switch that controls the operation; first and second rotating members that are rotationally displaced from a first position to a second position as the playback operation lever is moved to an operating position; A third member whose rotational position is controlled by the rotational member, and which rotationally displaces the second rotational member to a third position as the fast-forward operation lever or the rewind operation lever moves to the operating position. It is composed of a rotating member, and the music selection switch is mounted on the first rotating member.

(e) Function The present invention provides a music selection switch that is mounted on a first rotary member that rotates from the first position to the second position as the playback operation lever is moved to the operating position, and also provides a playback operation lever. a second rotating member that moves from the first position to the second position as the lever moves to the operating position, and to the third position as the fast forward or rewind operating lever moves to the operating position; provided, the second
The music selection switch is switched by rotating the rotating member to the third position.

(f) Examples The drawings all relate to the switching device of the present invention.
2 is a plan view showing the stopped state, FIG. 2 is a plan view showing the playback state, FIG. 3 is a plan view showing the music selection state, and FIG. 4 is an exploded perspective view of the main parts. 1 is fixed board 2
a regeneration operation lever that is attached to the regeneration operation lever so as to be movable in the directions of arrows A and B, and is also displaced in the direction of arrow A, which is the operating position during regeneration operation;
A pressure piece 3 and a control piece 4 are formed and serve to bring a drive mechanism (not shown) into a state for regeneration when in the operating position. Reference numeral 5 denotes a fast-forward operation lever which is attached to the fixed substrate 2 so as to be movable in the directions of arrows A and B, and which is also moved in the direction of arrow A, which is the operating position during fast-forward operation and music selection operation in the playback direction. , a pressing piece 6 is formed and has the function of bringing the drive mechanism into a state for rapid forwarding when in the operating position. Reference numeral 7 denotes a rewinding plate which is attached to the fixed substrate 2 so as to be movable in the directions of arrows A and B, and which is also displaced in the direction of arrow A, which is the operating position during the rewinding operation and the song selection operation in the opposite direction of the playback direction. This is a control lever on which a pressing piece 8 is formed and has the function of bringing the drive mechanism into a state for rewinding when it is in the operating position. 9 is rotatably mounted on a shaft 10 and a spring 11
When the regeneration operation lever 1 is displaced to the operating position, the first rotation member is biased counterclockwise by The first position shown in FIG. 1 is rotated from the first position shown in FIG. 1 to the second position shown in FIG. 2 by pressing. Reference numeral 13 is rotatably attached to the first rotating member 9 by a shaft portion 14, and the spring 1
5, the rotational position of which is regulated by a control piece 4 formed on the regeneration operation lever 1; When it is moved to the operating position, it is pivotally displaced from the first position shown in FIG. 1 to the second position shown in FIG. 2. Further, a control protrusion 16 and a switching protrusion 17 are formed on the second rotating member 13. 18 is rotatably attached to the fixed base plate 2 etc. by a shaft 19, and its rotational displacement is controlled by engagement with the control protrusion 16 formed on the second rotary member 13. When the fast-forward operation lever 5 or the rewind operation lever 7 is moved to the operating position, it is rotated clockwise by the pressing pieces 6 and 8 formed on the operation lever 5 or 7. It is connected so that it can be rotationally displaced. Reference numeral 20 denotes a song selection switch provided to control the operation of a no-signal portion detection circuit (not shown), etc., which detects no-signal portions between signals of music or the like recorded on a magnetic tape. It is attached to the end of the first rotating member 9 and includes a first contact piece 21 and a second contact piece 22. In such a configuration, the first rotating member 9
When the second rotating member 13 is rotated to the third position when the switch is in the second position, the switching protrusion 17 formed on the second rotating member 13 switches the music selection switch 20.
The first contact piece 21 and the second contact piece 22 are related to each other so as to press the insulating portion 23 provided on the first contact piece 21 and bring the first contact piece 21 and the second contact piece 22 into contact with each other. The present invention is constructed as described above, but when the playback operation lever 1, fast-forward operation lever 5, and rewind operation lever 7 are moved to the operating position by operation from the stopped state, the lock mechanism When the playback operation lever 1 is in the operation position, that is, in the playback state, when performing fast forward or rewind operation for song selection, the fast forward operation lever 5 or the rewind operation is locked so that it is locked in the operating position. The lever 7 is locked in the operating position, and when a predetermined no-signal portion is detected, the fast forward operating lever 5 or rewind operating lever 7 is unlocked.
As such a locking mechanism, a well-known mechanism may be used, and its explanation will be omitted.

The switching device of the present invention is constructed as described above, and its operation will be explained next. The state shown in FIG. 1 is a stopped state, and the reproduction operation lever 1, the fast-forward operation lever 5, and the rewind operation lever 7 are in non-operating positions. When the regeneration operation lever 1 is in the non-operating position, the pressing piece 3 formed on the regeneration operation lever 1 is in a non-contact state with the contact portion 12 formed on the first rotating member 9. , the first rotating member 9 is held at the first position by the biasing force of the spring 11. Further, the second rotating member 13 is held at the first position by contact with the control piece 4 formed on the regeneration operation lever 1 and by the biasing force of the spring 15. When in such a stopped state, the switching protrusion 17 formed on the second rotating member 13 is provided on the first contact piece 21 of the music selection switch 20 attached to the first rotating member 9. Since it is spaced apart from the insulating section 23, the music selection switch 20 is in an open state. When a regeneration operation is performed in such a stopped state, the regeneration operation lever 1 is displaced in the direction of arrow A and is locked and held by the lock mechanism in the operating position shown in FIG. When the playback operating lever 1 is moved to the operating position, the drive mechanism enters the playback state and a magnetic head (not shown)
is moved into an operating position in which it contacts the magnetic tape, and the tape recorder enters the playback state. When the regeneration operation lever 1 is moved to the operating position, the pressing piece 3 formed on the regeneration operation lever 1 moves to the first position.
As a result of contacting the contact portion 12 formed on the rotating member 9 and rotationally displacing the first rotating member 9 in the clockwise direction against the biasing force of the spring 11, the first rotating member 9 is held in the second position shown in FIG. Furthermore, when the regeneration operation lever 1 is displaced to the operating position, the control piece 4 formed on the operation lever 1 is displaced together with the lever 1 in the direction of arrow A, so that the rotation position is regulated by the control piece 4. The second rotating member 13 is in a state where it is pivoted to the second position shown in FIG. 2 by the biasing force of the spring 15. In this way, the tape recorder is switched to the playback state, and when the tape recorder is in the playback state, the switching protrusion 17 formed on the second rotating member 13 is attached to the first rotating member 9. The first contact piece 2 of the music selection switch 20
1, the music selection switch 20 is in an open state.

The switching operation to the playback state is performed as described above, but next, the song selection operation by fast forwarding, which is the same direction as the playback direction, will be explained. This song selection operation is
This is accomplished by performing a fast forward operation while the tape recorder is in the playback state shown in FIG. When a fast-forward operation is performed in the reproduction state, the fast-forward operating lever 5 is moved to an operating position in the direction of arrow A. When the fast-forward operating lever 5 is displaced in the direction of arrow A, the pressing piece 6 formed on the operating lever 5 comes into contact with the third rotating member 18, causing the third rotating member 18 to move clockwise around the shaft 19. rotationally displaced in the direction. The third rotating member 18
is rotated clockwise, the third rotating member 18
The end of the second rotating member 13 presses the control protrusion 16 formed on the second rotating member 13, and the second rotating member 13 moves counterclockwise against the biasing force of the spring 15. It can be rotated into position. FIG. 3 shows a state in which such an operation is performed, and in this state, the switching protrusion 17 formed on the second rotating member 13 switches the music selection switch 20.
The insulating portion 23 provided on the first contact piece 21 is in a pressed state. Therefore, as the first contact piece 21 is displaced, the first contact piece 21 and the second contact piece 22 come into contact with each other, so that the music selection switch 20 is in a closed state. In this way, when the tape recorder is in the playback mode and a song selection operation is performed by fast-forwarding, the fast-forwarding operation lever 5 is moved to the operating position and the song selection switch 20 is closed, so that the no-signal portion detection circuit etc. are in the operating state. As a result, the rapid-forward operation lever 5 is locked and held in the operating position. When the fast-forward operation lever 5 is displaced and maintained at the operating position, the drive mechanism enters the fast-forward state, and the tape recorder enters the fast-forward music selection operation state. When a predetermined no-signal portion is detected during the music selection operation state, the fast-forward operating lever 5 is unlocked at the operating position, and the fast-forward operating lever 5 is returned to the non-operating position. When the fast-forward operation lever 5 returns to the non-operating position, the state shown in FIG. 2, that is, the playback state is entered, and the selected song is played back. In this way, the song selection operation is performed by fast forwarding, but it is also possible to perform the song selection operation by rewinding in the same way. That is, when the rewind operation is performed in the playback state shown in FIG. 2, the rewind operation lever 7 is moved to the operating position in the direction of arrow A. When the rewind operating lever 7 is displaced in the direction of arrow A, the pressing piece 8 attached to the operating lever 7 comes into contact with the third rotating member 18, and rotates the third rotating member 18 clockwise. As a result of the displacement, the music selection switch 20 is closed as described above. Therefore, the rewind operation lever 7 is locked in the operating position, and the tape recorder enters the song selection operation state.
When a predetermined no-signal portion is detected, the operating position of the rewind operating lever 7 is unlocked, and the rewind operating lever 7 is returned to the non-operating position. As a result, the tape recorder is switched to the playback state and the selected song is played back.

The song selection operation is performed as described above, but if the stop operation is performed while in the playback state, the locking of the operating position of the playback operating lever 1 is released and the tape recorder is switched to the stop state shown in FIG. Further, when the tape recorder is in the stopped state shown in FIG. 1 and a fast forward or rewind operation is performed, the fast forward operating lever 5 or the rewinding operating lever 7 is displaced to the operating position and is activated by the lock mechanism. It is held in the operating position and fast forward or rewind operations of the tape recorder are performed. In the fast-forwarding state or the rewinding state, the first rotating member 9 is in the first position, so the music selection switch 20 is never closed.

(g) Effects of the invention The switching device of the invention includes a music selection switch mounted on a first rotating member that rotates from the first position to the second position as the playback operation lever moves to the operating position. At the time of installation, when the playback operation lever is moved from the first position to the second position, and when in the second position, the fast forward or rewind operation lever is moved to the operation position. A second rotary member that is rotatably displaced to a third position is rotatably attached coaxially with the first rotary member, and a song selection switch is operated by rotatably displacing the second rotary member to the third position. In other words, since the first rotating member to which the selection switch is attached and the second rotating member that performs the switching operation of the song selection switch are coaxial, the switching operation of the song selection switch can be easily controlled. It has the advantage of being accurate. Further, each lever is provided with a rotational displacement operation of a third rotational member that is provided to rotationally displace the second rotational member to the third position when the fast forward or rewind operation lever is displaced to the operating position. Since this is done by the pressing force of the pressing piece that is provided, that is, the switching operation of the music selection switch for fast forwarding and rewinding is done by the same rotating member, so the configuration is simplified. The present invention has a very large effect on downsizing tape recorders.

[Brief explanation of the drawing]

The drawings all relate to the switching device of the present invention.
2 is a plan view showing the stopped state, FIG. 2 is a plan view showing the playback state, FIG. 3 is a plan view showing the music selection state, and FIG. 4 is an exploded perspective view of the main parts. Explanation of main figure numbers, 1... Reproduction operation lever, 5
...Fast-forward operating lever, 7... Rewind operating lever, 9... First rotating member, 13... Second rotating member, 18... Third rotating member, 20... Song selection switch.

Claims (1)

[Scope of utility model registration request] A song selection system that detects a no-signal section between signals of music recorded on a magnetic tape in fast-forward or rewind mode, and when a predetermined no-signal section is detected, cancels the fast-forward or rewind mode and switches to playback mode. In a tape recorder having this function, a playback operation lever is moved to an operating position during a playback operation, and a fast-forward operation lever is moved to an operating position during a song selection operation in the same direction as the playback direction, and the drive mechanism is switched to a fast-forward state. a rewind operation lever that is moved to an operating position during a music selection operation in the direction opposite to the playback direction and switches the drive mechanism to a rewinding state; and a music selection switch that controls the operation of a no-signal portion detection circuit, etc. It is rotatably attached to a fixed substrate, and is rotatably displaced from the first position to the second position as the playback operation lever is moved to the operating position, and the music selection switch is attached. a first rotating member, which is rotatably attached coaxially with the first rotating member, and moves from the first position to the second position as the regeneration operating lever is displaced to the operating position; a second rotating member that is rotationally displaced and biased to rotate in the direction of the second position; and a second rotating member that is pressed by the rotational displacement force of the second rotation member and that The rotational position is determined by the member, and when the second rotational member is in the second position and the fast forward operation lever or the rewind operation lever is displaced to the operating position, a and a third rotary member that is rotatably displaced against the biasing force of the spring by a pressing piece that is attached to the spring, and when the second rotary member is in the second position, the fast-forward operation lever or the winding When the return operation lever is displaced to the operating position, the second rotation member is rotated to the third position by the rotation displacement of the third rotation member, and the second rotation member is rotated to the third position. A switching device for a music selection switch, characterized in that a music selection switch attached to the first rotation member is switched by rotationally displacing the movement member to the third position.