JPH021701Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic stop malfunction prevention mechanism in a magnetic recording/reproducing machine. The conventional auto-stop mechanism consists of a release lever that operates upon detection of the stoppage of the reel stand, an auxiliary release lever that is pivotally supported at the tip of the release lever, and a playback and fast-forward mechanism that is in contact with the tip of the auxiliary release lever. It consists of a lock plate for locking and unlocking the rewind button, etc. When the end of the tape runs, the release lever automatically rotates and the operation button is unlocked by moving the lock plate through the movement of the auxiliary release lever. An auto-stop mechanism is used. This mechanism is a common one, but since the reel stand is temporarily stopped during cue and review operations, the release lever is activated when the stop is detected even during cue operation. It has a problem where it may move and auto-stop may occur by mistake.

The present invention was devised for the purpose of improving the above-mentioned drawbacks, namely, to provide a mechanism that prevents erroneous auto-stop during queue and review operations.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows the stopped state, Figure 2 shows the reproducing operation state, and Figure 3 shows the queue operation or review operation state. Lever 2 is an auxiliary release lever that is pivotally supported at the tip of the release lever; 3 is a lever that locks the playback button 4, fast forward button 5, rewind button, stop button 7, etc. that are in contact with the tip of the auxiliary release lever 2; This is a lock plate for unlocking, and the lock plate 3 is biased to the right in the figure by a spring 8.

In the present invention, in such a mechanism, a prevention lever 9 is rotatably supported on the lock plate 3, and one end 10 of the prevention lever 9 is engaged with the tip pin 11 of the auxiliary release lever 2, and the prevention lever 9 is supported by a spring 12. When the head 14 is moved back during review or cueing, the other end 13 is rotated in the clockwise direction in the figure.
The pin 15 of the head 14 is configured so that it touches the pin 15 of the head 14, and when the head 14 retreats during review or cueing, the pin 1
5, the prevention lever 9 is rotated counterclockwise to rotate the auxiliary release lever 2 to a position where the contact surface A at the tip of the auxiliary release lever 2 is removed from the contact surface B of the lock plate 3. It is something.

The operation will be explained based on the above configuration.

Although FIG. 1 shows the apparatus in a stopped state, when the regeneration button 4 is pressed from this state and is locked by the lock plate 3 as shown in FIG. 2, the apparatus enters the regeneration operating state. In this state, the contact surface A of the auxiliary release lever 2 and the contact surface B of the lock plate 3 are in contact with each other. Therefore, when the tape reaches the end, the stop of the reel stand is detected and the release lever 1 is activated as indicated by R in FIG.
When the lever rotates clockwise, the auxiliary release lever 2
The abutting surface A presses the abutting surface B of the lock plate 3, the lock plate 3 moves in the direction shown by the instruction arrow S, and the playback button 4 is returned to T, resulting in an auto-stop.

However, as shown in FIG. 3, when the rewind button 6 or the fast forward button 5 is pressed to perform a cue or review operation, the head 14 moves back slightly M as is well known. The pin 15 presses the other end 13 of the prevention lever 9, causing the prevention lever 9 to rotate in the counterclockwise direction N against the spring 12. Therefore, since the one end 10 also rotates in the counterclockwise direction N, since the pin 11 of the auxiliary release lever 2 is engaged with the end 10, the auxiliary release lever 2 is rotated so that its abutting surface A is The lock plate 3 is rotated to a position where it does not touch the contact surface B. In this state, even if the reel stand stops due to the queue operation or the review operation and the release lever 1 rotates R, the auxiliary release lever 2 will certainly operate, but the contact surface A will be the contact surface of the lock plate 3. Since it moves without hitting B, the lock plate 3 is not operated and auto-stop does not occur. In other words, auto-stop during queue operation or review operation is completely prevented.

As described in detail above, the present invention provides the release lever 1
and an auxiliary release lever 2 which is pivotally supported on the tip of the release lever 1 and has a pin 11 at its tip, and a contact surface B that is in contact with the contact surface A of the tip of the auxiliary release lever 2. It consists of a lock plate 3 for locking and unlocking the rewind button, etc. When the end of the tape is detected, the release lever 1 is automatically rotated, and the play button is activated by moving the lock plate 3 through the movement of the auxiliary release lever 2. In the mechanism that unlocks and auto-stops the lock plate 3,
A prevention lever 9 is pivotably supported, and one end 10 of the prevention lever 9 is rotatably supported.
is engaged with the tip pin 11 of the auxiliary release lever 2, and the other end 13 is connected to the pin 1 of the head 14 when the head 14 is retreated during review or cueing.
5, and when the head 14 is retracted during review or queue, the prevention lever 9 is rotated to release the auxiliary release lever 2 from the contact surface A of the auxiliary release lever 2.
Since this is an auto-stop malfunction prevention mechanism in a magnetic recording/playback machine in which the lock plate 3 is located at a position away from the contact surface B of the lock plate 3, an auto-stop malfunction will never occur during review or cue operation. .

[Brief explanation of the drawing]

The attached drawings show an embodiment of the present invention, in which Fig. 1 shows the stop state, Fig. 2 shows the playback state, and Fig. 3 shows the review or queue state. Release lever, 2 is auxiliary release lever, 3
is a lock plate, 4 is a play button, 5 is a fast forward button, 6 is a rewind button, 7 is a stop button, 8 is a spring, 9 is a prevention lever, 10 is one end, 11 is a pin, 12 is a spring, 13
is the other end, 14 is the head, and 15 is the pin.

Claims (1)

[Scope of utility model registration request] A reproducing device having a release lever 1, an auxiliary release lever 2 which is pivotally supported at the tip of the release lever 1 and has a pin 11 at its tip, and a contact surface B that is in contact with a contact surface A of the tip of the auxiliary release lever 2. Lock plate 3 for locking and unlocking buttons, fast forward, rewind buttons, etc.
When the end of the tape is detected, the release lever 1 is automatically rotated, and the lock plate 3 is moved through the movement of the auxiliary release lever 2, thereby unlocking the playback button etc. and automatically stopping the playback button. 3, the prevention lever 9 is pivotably supported,
One end 10 of the auxiliary release lever 2 is connected to the tip pin 11 of the auxiliary release lever 2.
At the same time, the other end 13 is made to come into contact with the pin 15 of the head 14 when the head 14 is retracted during a review or cue, and the prevention lever 9 is rotated when the head 14 is retracted during a review or cue. An automatic stop malfunction prevention mechanism in a magnetic recording/reproducing machine, in which an auxiliary release lever 2 is located at a position where a contact surface A of the auxiliary release lever 2 is removed from a contact surface B of a lock plate 3.