JPS609960Y2 - Pause device in recording/playback equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pause device in a recording/reproducing apparatus such as a VTR or tape recorder.

As is well known, a pause device is used during recording or playback (playing).
However, in the past, the vinyl roller was simply moved away from the capstan during play, and did not actively stop the tape from running.

Therefore, the moment the tape is switched to the pause state, it moves slightly due to inertia, and even after the tape stops running, unnecessary movement tends to occur in the tape due to mechanical vibration or the like.

In particular, in recent recording and reproducing apparatuses, a tick-up tension is applied to prevent the tape from sagging in the normal pause state, and for this reason, the tape may continue to run if there is no mechanism to stop the tape.

For this reason, in the past, it was not possible to stop the tape instantaneously at the moment the tape was switched to the pause state, making it difficult to accurately cue or repeat shots during tape editing, for example.

The present invention was devised to solve the above-mentioned drawbacks, and is a pose device that has a simple structure, requires only a small number of components, and is extremely easy to manufacture. Tape running can be stopped reliably and easily, and unnecessary movement of the tape thereafter can be prevented, and when switching from a pause state to a play state such as recording or playback, the tape can be run smoothly and reliably. I am trying to make it possible.

That is, the present invention provides a recording and reproducing apparatus having a tape running path in which the tape passes between one side of the pinch roller and the capstan, and then the other side, and includes a solenoid and one end supporting the solenoid. a support means whose portion is rotatably supported; and a support means which is integrally fixed to the support means and which is applied to the pinch roller from the side opposite to the side where the capstan is disposed with respect to the tape passing through the other side of the pinch roller. The recording/reproducing device is configured to be in a FWD state, and includes a brake means that moves toward and away from the capstan, a pinch roller pressing device driven by the solenoid, and a biasing device that biases the pinch roller in a direction away from the capstan. When the support means is rotated by a predetermined amount, the pinch roller is pressed by the pinch roller pressing means to press against the capstan, and the pinch roller is separated from the brake means. When the recording/reproducing device is in a pause state, the drive of the pinch roller pressing means by the solenoid is released, and the urging force of the urging means presses the pinch roller against the brake means to stop the tape. This is how it happens.

An embodiment shown in the drawings showing an example of the application of the present invention to a VTR will be described below.

FIG. 1 schematically shows the principle of construction of the pose device of the present invention.

A in the figure is a solenoid assembly, and the fulcrum pin 1
a solenoid SQL attached to a support plate 1 rotatably supported by a lever 4 constituting a pressing means for a pinch roller 13 disposed in relation to the solenoid SQL;
A pinch roller pressing roller 10 is pivotally supported at the moving end of the lever 5 (more preferable examples of this lever will be described later), and a brake means protruding from the support plate 1 in the direction in which the pinch roller 13 is disposed. It is composed of brake shoes 3 and the like.

Also, by pressing the mode switching operation button 18 in the direction of arrow C, the solenoid assembly A switches between the link members Ll, L2. In conjunction with the operation of this button 18 via La-L4 etc., the brake shoe 3 is rotated counterclockwise in the figure around the fulcrum pin 1a, whereby the brake shoe 3 is pressed against the pinch roller 13. Further, the roller 10 is also moved in a direction approaching the pinch roller 13 at the same time.

In addition, the solenoid SQL has, for example, a switch Sw□, a delay circuit, a switch S front 2, which is opened and closed in conjunction with a pause button (not shown), etc. connected in series to the power supply ■, and the switch SW1 etc. is operated to switch the mode. It is arranged to be closed when the button 18 is operated.

As a result, after the solenoid assembly A is rotated one step in the direction of the pinch roller 13 around the fulcrum pin 1a as described above, the solenoid SQL is energized and the lever 45
is rotated clockwise in the figure around the fulcrum pin 6, and the roller 10 is further advanced in the direction of the pinch roller 13.

The roller 10 is adapted to abut, for example, the support shaft 13a of the pinch roller 13 from the side, and as described above, the forward movement of the roller 10 forces the pinch roller 13 against the capstan 17.

When the roller 10 pushes the pinch roller 13 so that it comes into pressure contact with the capstan 17, the pinch roller 13 separates from the brake shoe 3, and a driving force is applied to the tape T between the pinch roller 13 and the capstan 17. It is designed to be driven.

Next, further details will be explained with reference to FIG.

In this figure, the same members as in FIG. 1 are given the same reference numbers, and the same applies to the other figures below.

FIG. 2 is a perspective view of the main parts of the VTR constituting the pose device of the present invention. In the figure, 1 is a support plate, one end of which is connected to a chassis (not shown) by a fulcrum pin 1a, around the fulcrum pin 1a. is pivoted so as to be rotatable in the direction of the arrow [) and D' force.

Note that the above-described rotation of the support plate 1 is linked to the operation of the mode switching operation button 18 described above with reference to FIG.
When switching to pause mode and FWD mode, rotation is performed in the direction of the arrow, and stop, FF,
In each RWD mode, it is rotated in the direction of arrow D'.

2 is a brake arm, and in the example shown in FIG. 2, the proximal end 2a side bent into an L-shape is integrally fixed to the support plate 1, and the distal end 2a extending straight is A brake shoe 3 that comes into contact with and separates from the pinch roller 13 is attached.

This brake shoe 3 comes into pressure contact with the outer circumferential tape running surface 13b of the pinch roller 13 from the outer radial direction of the pinch roller 13, and acts to press and hold the tape T between these two 3 and 13b.

Further, a rod R is built into the solenoid SQL so as to be able to protrude and enter.

This solenoid SQL is fixedly supported by the support plate 1,
The rod tip Ra is connected and pivoted to one end of the first lever 4 via a pivot pin 4a.

This lever 4 is connected to the lever 4 of FIG. 1 together with the second lever 5.
5, and the support plate 1
It is rotatably supported on.

The one end of the fulcrum pin 6 of the second lever 4 that extends to one side becomes a connecting portion with the tip Ra of the rod R of the solenoid SQL, and the other end that extends to the other side of the fulcrum pin 6 are each one end 7aw8 of the first spring 7 and the second spring 8
latching holes 4b and 4c are drilled into which the fulcrum pin 6 is latched, and furthermore, on one side of the midway portion between the pivot portion by the fulcrum pin 6 and the other end, there is a hole for abutment with the second lever 5. The piece 9 is formed by rising and bending.

The second lever 5 is rotatably supported at its midpoint by a pin 6 common to the fulcrum pin of the second lever 4, and the lever 5 extends to one side of the pin 6. At one end, the roller 10 for pinch roller pressing operation is rotatably supported via a support shaft 5a, and at the other end, which extends to the other side of the pin 6, is an abutment piece provided on the first lever 4. A contact portion 11 for contact with 9 is provided.

Note that the roller 10 is connected to the spindle 13 of the pinch roller 13.
The pinch roller 1 is provided at the lower part of the roller in the figure a and is adapted to approach and separate from the receiving portion 13c from the outer diameter direction.
3 faces the receiving portion 13c from the side opposite to the side where the capstan 17 is provided.

In this respect, the brake shoe 3 also has a pinch roller 13.
On the other hand, it faces the outer peripheral tape running surface 13b of the pinch roller from the side opposite to the side where the capstan 17 is provided.

The pinch roller 13 is rotatably supported at the tip of a pinch roller arm 14 by a pinch roller support shaft 13a, and the base end of the arm 14 is connected to a loading arm 15.
is pivotally supported by a pivot pin 14a.

The arm 14 is resiliently biased counterclockwise in the figure around the pivot pin 14a by a spring (not shown).

A tape guide roller 16 is pivotally supported by the loading arm 15, and runs and stretches a magnetic tape such as a cassette (not shown) from one side of the pinch roller 13 to the other side.

17 is a capstan, which is driven by a motor (not shown).

Furthermore, a locking protrusion 12 for locking the other end 8b of the second spring 8 is protrudingly provided on the side of the pivot portion of the second lever 5 supported by the fulcrum pin 6.

Note that the other end 7b of the first spring 7 is hooked to a hook portion 1a that is integral with the support plate 1.

These first springs 7 and second springs 8 are
The relationship is such that the second spring 7 is weaker and the second spring 8 is stronger, so that a stable pressure contact state can be realized when the roller 10 presses the support portion 13c of the support shaft of the pinch roller. It has become.

That is, the first lever 4 and the second lever 5 are normally attracted to each other by the second spring 8, and the abutting piece 9 and the abutting portion 11 are in abutting engagement with each other. 1st
The entire first and second levers 4, 5 are pulled counterclockwise in the figure around the fulcrum pin 6 by the spring 7, and the roller 10 is separated from the pinch roller 13.

Therefore, when the first and second levers 4 and 5 are in such a state, if the support plate 1 is rotated around the fulcrum pin 1a in the direction indicated by the arrow in conjunction with the mode switching operation button 18 described above. , the solenoid SQL, the roller 10, and the brake shoe 3 are moved together with the support plate 1 around the fulcrum pin 1a in the direction indicated by the arrow, that is, in the counterclockwise direction in the figure, so that the roller 10 and the brake shoe 3 become pinch rollers. The brake shoe 3 is moved in the direction 13, and the brake shoe 3 is brought into pressure contact with the pinch roller 13.

Then, from the above state, solenoid SQL is excited,
When the rod R is retracted, the first lever 4 is rotated clockwise around the fulcrum pin 6.

That is, one end of the first lever 4 is given a tensile force by the solenoid SQL that is greater than the spring force of the first spring 7 hooked to the other end, and the first lever 4 is rotated clockwise. It is something that is moved.

The clockwise rotation of the first lever 4 causes the second lever 5 to similarly rotate clockwise via the second spring 8, causing the second lever to pivot. The supported roller 10 is also moved clockwise around the fulcrum pin 6 together with the second lever 5, and the receiving portion 1 of the pinch roller 13 is moved clockwise around the fulcrum pin 6.
3c.

However, since no rotational force is applied to the support plate 1 at this time, the tape is attached to the support plate 1, and as described above, the tape is attached to the tape running outer peripheral surface 13b of the pinch roller 13 opposite to the side on which the capstan 17 is disposed. The pinch roller 13 separates from the brake shoe 3, which had been pressed against the pitch roller 13, and the magnetic tape T held between the pitch roller 13 and the brake shoe 3 is released.

Furthermore, at this time, the pinch roller 13 is
is pushed forward until it is pressed against the capstan 17, and a magnetic tape T is inserted between the pinch roller 13 and the capstan 17.
are held in pressure contact, and the running driving state of the magnetic tape T is realized.

When the roller 10- presses the pinch roller 13 toward the capstan 17, a reaction force is applied to the second lever 5 via the roller 10 in a counterclockwise direction in the figure around the fulcrum pin 6. However, at this time, the second spring 8 hooked between the second lever 5 and the first lever 4 acts elastically, and the pinch roller 13 is stably pressed by the roller 10. be done.

That is, in the above configuration, the operating state will be explained with reference to FIGS. 3 to 5. First, the stop mode, the FF
mode or RWD mode, the state is shown in FIG. 3.

In this state shown in FIG. 3, the pinch roller 13 is separated from the capstan 17, and the roller 10 and brake shoe 3 are separated from each other.
is also spaced apart from the pinch roller 17.

Therefore, in this state, the magnetic tape T travels from a supply reel (not shown) around the tape guide roller 16 and further to a pick-up reel (not shown), and is not subjected to any driving force by the capstan 17 or braking by the brake shoe 3.

Next, FIG. 4 shows the FWD pause mode, and this fourth
In the state shown in the figure, the brake shoe 3 comes into pressure contact with the pinch roller 13 in conjunction with the pressing operation of the FWD mode switching operation button.
The magnetic tape T is held between the brake shoe 3 and the pinch roller 13, and the magnetic tape T is in a brake applied state.

At this time, the pinch roller 13 is separated from the capstan 17 because no pressing force is applied to the pinch roller 13 in the direction of the capstan 17 by the running roller 10.

Note that in normal pause mode, a tick-up tension is applied to prevent the magnetic tape from sagging, so if there is no brake, there is a risk that the tape will run despite the pause mode. As a result, you don't have to worry about it at all.

Furthermore, in the FWD mode, the state shown in FIG. 5 occurs.

That is, when the pause is released in the mode shown in FIG. Ru.

Therefore, in this FWD mode, the magnetic tape T is driven to travel by the capstan 17 and the pinch roller 13.

Then, when you press the pause button (not shown) to switch from the FWD mode shown in Fig. 5 to the pause state (Fig. 4),
The switch 5W2 (see Fig. 1) is opened, that is, the slide/id SQL is demagnetized, and therefore the pressing force that was pressing the pinch roller 13 of the roller 10 in the direction of the capstan 17 is released, and the pinch roller 13 returns to its original state. It is separated from the capstan 17 by a spring.

At this time, since the FWD mode operation button 18 remains switched to the FWD state, the support plate 1 is moved around the fulcrum pin 1a in the D direction, that is, in the counterclockwise direction in the figure. The brake shoe 3 remains in the same state as it is, and the brake shoe 3 remains moved to the pinch roller 13 side.

Therefore, as described above, the pinch roller 13 is separated from the capstan 17 by the return spring, and at the same time comes into pressure contact with the brake shoe 3, so that the magnetic tape T is held between the brake shoe 3 and the pinch roller 13.

In this way, in the pause state, that is, the pinch roller 13
When the magnetic tape T is separated from the capstan 17 and tape running is temporarily stopped, the pinch roller 13 and the brake shoe 3 are always in a state where the magnetic tape T is held between them, and the magnetic tape is in a state where the brake is applied.

In this way, in the present invention, the pause brake is applied using the pre-crimping stroke to save the stroke of the solenoid, so the pause brake can be applied reliably with a simple configuration. The intended purpose can easily be a distant relative.

Note that the present invention is not limited to the example illustrated above, and various modifications are possible.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram schematically showing the configuration of the present invention. FIG. 2 is an enlarged perspective view of the main parts of the present invention. 3 to 5 are schematic plan views showing different operating states of the present invention, and FIG. 3 is a stop (or F)
F, RWD) mode, Figure 4 is FWD pause mode,
FIG. 5 shows the FWD mode. 3... Brake shoe, 13... Pinch roller, 17... Capstan, T...
·Magnetic tape.

Claims (1)

[Scope of utility model registration request] A recording/reproducing device having a tape running path in which the tape passes between one side of the pinch roller and the capstan and then the other side, includes a solenoid and a rotatable end portion that supports the solenoid. a pivotally supported support means; and a brake means integrally fixed to the support means, which approaches and separates from the pinch roller from the side opposite to the capstan installation side with respect to the tape passing on the other side of the pinch roller. , a pinch roller pressing means driven by the solenoid, and an urging means for urging the pinch roller in a direction away from the capstan, and when the recording/reproducing apparatus is in the FWD state, the As the supporting means is rotated by a predetermined amount, the pinch roller is pressed by the pinch roller pressing means to press against the capstan, and the pinch roller is separated from the brake means, and the recording/reproducing apparatus is paused. In the recording/reproducing apparatus, when the pinch roller pressing means is released from being driven by the solenoid and the pinch roller is brought into pressure contact with the brake means by the urging force of the urging means, the tape is stopped. Pause device.