JPH0325307Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a tape recorder, and particularly to an operation switching device.

(B) Prior Art Cassette-type tape recorders that use magnetic tape called cassettes have become widespread, but some of these tape recorders have functions that can be used in addition to the basic operations of recording, playback, fast forwarding, rewinding, and stopping. Some devices are capable of performing a cue operation, which is a fast forward operation while playing, and a review operation, which is a rewind operation, while playing. Such cue or review operation is carried out by performing a fast forward or rewind operation when the tape recorder is in the playback mode; The substrate is configured to be slightly retracted from the reproduction operation position toward the stop position. Such a technology is disclosed in Japanese Utility Model Publication No. 55-33458, but it is not suitable for ultra-compact tape recorders because it is configured to switch to the cue or review mode using a push button. It wasn't suitable.

(c) Purpose of the invention The present invention aims to provide an operation switching device suitable for an ultra-small tape recorder.

(d) Structure of the device The device has a magnetic head attached thereto, which is displaced from the stop position during playback operation to the playback operation position, and is also displaced to the cue-review position, which is slightly retreated toward the stop position during cue and review operations. In a tape recorder equipped with a sliding board, the control lever is rotatably displaced in opposite directions during fast-forwarding and rewinding operations, and is provided with an operating section, and the operating lever is rotatably attached to a fixed board. a displacement member which is displaceable in accordance with the rotational displacement of the operating lever; and a locking member which is provided on the sliding board and is formed on the operating lever when the sliding board is in the playback operation position. a first engaging means that is capable of engaging with the mating portion; and a first engaging means that is provided on the sliding substrate and that engages with the engaging means that is formed on the displacement member when the sliding substrate is in the playback operation position. and a second engaging means that is brought into a state in which the operating lever is operated when the tape recorder is in the playback operation state, and the engaging portion formed on the operating lever and the displacement member, respectively, and the sliding base plate are connected to each other. The sliding substrate is displaced from the playback operation position to the playback position by engagement with the provided first and second engagement means.

(e) Embodiments The drawings all relate to the operation switching device of the present invention, and FIGS. 1, 2, 3, and 4 are plan views showing the stop state, playback state, queue state, and review state, respectively. It is. In the figure, reference numeral 1 denotes a sliding substrate which is slidably attached to a fixed substrate (not shown) and has a magnetic head 2 attached thereto.
When the regeneration operation is performed, it is displaced to the regeneration operation position and a spring (not shown) is installed at the position.
It is configured to be held by the urging force of. 3 is an engagement pin fixed to the sliding substrate 1, and 4 is an engagement hole formed in the sliding substrate 1. Reference numeral 5 designates an operating lever that is rotatably attached to a fixed base plate by a shaft 6 and has an operating section 7 formed thereon.By operating the operating section 7, the lever is moved in the direction of arrow A during a fast forward operation. It is configured so that it can be rotated and also rotated in the direction of arrow B during a rewinding operation. 8 indicates the sliding substrate 1 when the sliding substrate 1 is in the reproducing operation position.
The first lever formed on the operating lever 5 becomes engageable with the engaging pin 3 fixed to the operating lever 5.
The engaging portion 9 is a second engaging portion formed on the operating lever 5. Reference numeral 10 denotes a displacement member that is rotatably attached to a fixed base plate by a shaft 11 and is provided with a connecting pin 12 that engages with a second engaging portion 9 formed on the operating lever 5. ,
They are related to each other so as to be rotated and displaced in accordance with the rotational displacement of the operating lever 5. Reference numeral 13 denotes an engagement pin that is fixed to the displacement member 10 and inserted into the engagement hole 4 formed in the sliding substrate 1, when the sliding substrate 1 is in the regeneration operation position. It is related to the edge forming the engagement hole 4 so as to be able to come into contact with it. The operation 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, in which the sliding board 1 is in the stopped position and the operating lever 5 is in the non-operating position. In this state, the magnetic head 2 attached to the sliding substrate 1 is separated from the magnetic tape T. When the user performs a regeneration operation in this state, the sliding substrate 1 is slid in the direction of arrow C, which is the regeneration operation position, and the drive mechanism enters a state in which it performs constant speed drive for regeneration. When in the reproducing operation state, the sliding substrate 1 is held in the reproducing operation position by the biasing force of the spring, and the magnetic head 2 is in contact with the magnetic tape T as shown in FIG. . When the sliding board 1 is in the regeneration operation position, the engaging pin 3 fixed to the sliding board 1 is in a state where it can be engaged with the first engaging part 8 formed on the operating lever 5. At the same time, the engagement hole 4 becomes capable of engaging with the engagement pin 13 fixed to the displacement member 10.
A reproduction operation is performed in this state.Next, a cue operation in which the magnetic tape is fast-forwarded while performing a reproduction operation will be explained.

In such a cue operation, the tape recorder is the second
This is carried out by operating the operating portion 7 formed on the operating lever 5 in the reproducing operation state shown in the figure, and turning the operating lever 5 in the direction of arrow A. When the operating lever 5 is rotated in the direction of arrow A, the drive mechanism for the magnetic tape T is switched from a constant speed drive state to a fast forward state. Further, when the operating lever 5 is rotationally displaced in the direction of arrow A, the first engaging portion 8 formed on the operating lever 5 engages with the engaging pin 3 fixed to the sliding substrate 1,
The engagement pin 3 is pressed and displaced in the direction of arrow D.
As a result, the sliding base plate 1 to which the engaging pin 3 is fixed is slightly displaced in the direction of arrow D against the biasing force of the spring, and is positioned at the cue review position. The state shown in FIG. 3 shows such a queue state, in which the magnetic head 2 attached to the sliding substrate 1 is in light contact with the magnetic tape T. In this way, the queue operation state is established, but when the operating lever 5 is returned to the non-operating position, the sliding board 1 returns from the queue review position to the regeneration operation position in the direction of arrow C by the biasing force of the spring. Then, the tape recorder returns to the playback mode.

The queue operation is performed as described above, but the review operation in which the magnetic tape is rewound while the playback operation is being performed will now be described. Such a review operation is performed by operating the operating portion 7 formed on the operating lever 5 when the tape recorder is in the playback operating state shown in FIG. 2, and moving the operating lever 5 in the direction of arrow B.
This is done by rotationally displacing it in the direction.

When the operating lever 5 is rotated in the direction of arrow B, the drive mechanism for the magnetic tape T is switched from the constant speed drive state to the rewind state. In addition, the operating lever 5
When the lever is rotated in the direction of arrow B, the displacement member 10 on which the connecting pin 12 is engaged with the second engaging portion 9 formed on the operating lever 5 moves toward the shaft 1.
1 in a clockwise direction. When the displacement member 10 is rotated clockwise, the engagement pin 13 formed in the displacement member 10 comes into contact with the edge of the engagement hole 4 formed in the sliding substrate 1, and the edge is moved in the direction of arrow D. Pressure displacement is caused to occur. As a result, the sliding base plate 1 in which the engaging hole 4 is formed is slightly displaced in the direction of arrow D against the biasing force of the spring, and is positioned at the cue review position. The state shown in FIG. 4 shows such a review state, in which the magnetic head 2 attached to the sliding substrate 1 is in light contact with the magnetic tape T. In this way, the review operation state is configured, but when the operating lever 5 is returned to the non-operating position, the displacement member 10 is rotated counterclockwise, and along with this displacement, the sliding base plate 1 is rotated. From the playback position, the tape recorder returns to the playback operation position in the direction of arrow C by the urging force of the spring, and the tape recorder returns to the playback operation state.

The playback, queue and review operations are performed as described above, but if the stop operation button (not shown) is operated while the tape recorder is in the playback state shown in FIG. The lock in the operating position is released, and the sliding base plate 1 is returned to the stopped position. When the tape recorder is in the stopped state shown in Figure 1,
The engaging pin 3 fixed to the sliding substrate 1 is not engaged with the first engaging portion 8 formed on the operating lever 5, and the engaging pin 3 fixed to the sliding substrate 1 does not engage with the first engaging portion 8 formed on the operating lever 5. is in a state where it does not engage with the engagement pin 13 formed on the displacement member 10. Therefore, even if the operating portion 7 of the operating lever 5 is operated to rotationally displace the operating lever 5 in the directions of arrows A and B when the operating lever 5 is in a stopped state, the first engaging portion 8 of the operating lever 5 and the displacement member 10 The engaging pins 13 of the sliding board 1 do not come into contact with the engaging pins 3 and the engaging holes 4 of the sliding board 1, respectively, and the sliding board 1 is not displaced in any way. Therefore, when the operating lever 5 is rotated in the directions of arrows A and B when the machine is in the stopped state, only the drive mechanism is brought into operation, and a fast-forward operating state and a rewinding operating state are established, respectively.

In this embodiment, the sliding substrate 1 is provided with the engaging pin 3 and the engaging hole 4, but it is also possible to provide the engaging pin on the operating lever 5 and form the engaging hole on the displacement member 10. be. In addition, although the magnetic tape T and the magnetic head 2 are brought into light contact when the sliding substrate 1 is at the queue/review position due to the queue/review operation, it is also possible to configure the magnetic tape T and the magnetic head 2 so that they do not come into contact with each other.

(F) Effects of the invention The operation switching device of the invention is provided with an operation part and is operated by an operation lever that is rotatably displaced in opposite directions during fast-forwarding and rewinding operations. Since the moving board is moved to the cue review position, the configuration is simplified and the amount of displacement required for switching can be reduced compared to a system that uses push buttons, making it suitable for use in ultra-compact tape recorders. This is extremely effective.

[Brief explanation of the drawing]

The drawings all relate to the operation switching device of the present invention.
FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are plan views showing a stop state, a playback state, a queue state, and a review state, respectively. Explanation of main drawing numbers, 1...Sliding board, 5...Operation lever, 7...Operation section, 10...Displacement member, T...
…Magnetic tape.

Claims (1)

[Scope of utility model registration request] In a tape recorder equipped with a magnetic head and a sliding substrate that is displaced from a stop position during a playback operation to a playback operation position, and is also displaced to a cue-review position slightly retreated toward the stop position during cue and review operations. , an operating lever that is rotatably displaced in opposite directions during a fast-forward operation and a rewinding operation, and is provided with an operating portion; and an operating lever that is rotatably attached to a fixed base plate and that is rotatably displaced in opposite directions. a displacement member that is displaced in accordance with the operation; and a displacement member that is provided on the sliding substrate and that is capable of engaging with an engaging portion formed on the operating lever when the sliding substrate is in the playback operation position. a second engaging means provided on the sliding substrate and capable of engaging with the engaging means formed on the displacement member when the sliding substrate is in the playback operation position; When the operating lever is operated when the tape recorder is in the playback operation state, the engaging portions formed on the operating lever and the displacement member, the first engaging means provided on the sliding substrate, and An operation switching device for a tape recorder, characterized in that the sliding substrate is displaced from a reproduction operation position to a playback position by engagement with a second engagement means.