JPS5847539Y2 - Push button device in recording/playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a push button device that is most suitable for application to recording and reproducing devices such as tape recorders and VTRs.

A conventional push button device is disclosed in Japanese Utility Model Publication No. 51-22643.

This prior invention creates a so-called tape high-speed feed mode for fast forwarding or rewinding by pressing the so-called fast forward or rewind button and the playback button together to lock them.

The tape high-speed feed mode is configured to automatically switch from the tape high-speed feed mode to the playback mode immediately by keeping the playback button locked during this tape high-speed feed mode and releasing the lock on only the high-speed feed button. This is what I did.

However, in this prior patent application, two lock plates stacked one on top of the other were used to achieve the above operation.

A so-called slide lock plate structure is adopted in which these two lock plates are linked to the push button and slid in the longitudinal direction thereof.

However, in this type of slide lock plate structure, due to the structural constraint that the two slide plates and the plurality of push buttons must intersect at right angles to each other, the structure is usually centered around a fulcrum called the piano touch. This method cannot be applied to a push button of a rotation type that is rotated as a button, and can only be applied to a structure in which the push button is reciprocated vertically.

By the way, in the case of a structure in which the pushbutton is vertically reciprocated, unlike the piano touch one, no lever action can be used when pushing the pushbutton, so the pushbutton is very heavy and requires a strong force to operate. This is extremely difficult for weak people such as women and girls to handle.

If you try to use a lever mechanism or a boosting mechanism to make the push button lighter, you would have to install these separately from the push button, which would complicate the structure, increase costs, and lack practicality. Let's do it.

In addition, the structure in which the push button and the slide lock plate intersect at right angles has a disadvantage that the space factor is very poor and the entire device becomes extremely large.

Furthermore, the prior art design requires the use of two so-called large slide lock plates in which both slide lock plates are of the same size, resulting in a drawback that the parts cost is extremely high.

The present invention was devised in view of the above-mentioned circumstances, and includes at least three push buttons: a play button, a high-speed forward button for rewinding or fast forwarding, and a stop button, and when the play button is pressed. The rotatable button is configured to lock this, and to release the lock when the stop button is pressed while either the playback button or the high-speed feed button is pressed and locked. a main lock plate, a first biasing means for returning the main lock plate to the lock position, an auxiliary lock plate dedicated to the high-speed feed button rotatably supported on the main lock plate; It consists of a second biasing means for returning the auxiliary lock plate to the lock position, and one of the main lock plate and the auxiliary lock plate is provided with a rotation lever, and the other is provided with a rotation lever for engaging the rotation lever. A third biasing means is provided to form a locking portion and to bias the rotary lever so that the rotary lever is locked in the locking portion, and when the playback button is pressed, the main lock is activated. When the high-speed feed button is pressed in a state where it is locked by a plate, a part of the high-speed feed button pushes the rotary lever and rotates the rotary lever against the third biasing means. By moving the
The locking connection of the auxiliary lock plate to the main lock plate is released, and the auxiliary lock plate is rotated independently, thereby locking the high speed feed button 11 which holds the playback button locked. By rotating the auxiliary lock plate by other means while the playback button and high-speed feed button are locked, the high-speed feed button can be pressed while the playback button is kept locked. The auxiliary lock plate is locked to the main lock plate again by releasing the lock and moving the rotary lever back by moving the high-speed feed button back.

With this configuration, unlike the slide lock plate type device devised in the earlier application, it is possible to realize automatic reversal from the tape high-speed feed mode to the playback mode using a rotational force type lock plate. , by using a rotating lock plate, the earlier application had no practical use.
It is possible to provide an effective push button device to which a piano touch type push button can be applied, and in which the various holes described above are corrected.

Examples to which the present invention is applied will be described below with reference to the drawings.

Reference numerals 1.2, 3, and 4.5 are buttons for stop, rewind, play, fast forward, and record, and these buttons have almost the same structure.

The rewind button 2 and the fast forward button 4 constitute an example of the fast forward button referred to in the present invention.

These push buttons 1 to 5 are inserted through a horizontal fulcrum shaft 8 attached to the chassis T, and are rotatably supported around this fulcrum shaft 8.

Further, these push buttons 1 to 5 are rotated counterclockwise in FIG. 5 by five spring pieces 9a integrally formed with a leaf spring 9 attached to the chassis T.

On the other hand, a main lock plate 11 is arranged horizontally below the push buttons 1-5.

The main lock plate 11 is rotatably supported on the chassis 1 by a pair of horizontal fulcrum shafts 12 formed at both ends thereof.

The main lock plate 11 is rotated counterclockwise in FIG. 5 by a tension spring 13, and is moved back to the push button lock position shown in solid line in FIG.

Note that this tension spring 13 constitutes an example of the first biasing means referred to in the present invention.

Further, the main lock plate 11 has an auxiliary lock plate 15 dedicated to the rewind button 2 at the bottom of the position corresponding to the rewind button 2.
is installed.

A portion of the auxiliary lock plate 15 is inserted into a notch 16 formed in the main lock plate 11, and a pair of fulcrum shafts 17 are arranged coaxially with the pair of fulcrum shafts 12.
It is rotatably supported on the main lock plate 11 by.

Note that this auxiliary lock plate 15 is fixed to the sixth position by a nine-tension spring 18.
The rewind button is rotated counterclockwise in the figure and is configured to be moved back to the rewind button lock position shown by the solid line in FIG.

However, the auxiliary lock plate 15 is rotated by the main lock plate 11 due to the above-mentioned double movement.
It is configured to be tightly attached to the bottom surface of the

Further, the tension spring 18 constitutes an example of the second biasing means referred to in the present invention.

Further, on the lower surface of the auxiliary lock plate 15, a joint lever 20 is configured to be freely rotatable via a vertical fulcrum shaft 21 formed of a screw.

Note that the joint lever 20 constitutes an example of a rotary lever referred to in the present invention.

The join L/bar 20 is urged to rotate clockwise in FIG. 8 by a tension spring 22 interposed between it and the auxiliary lock plate 15.

A substantially L-shaped locking portion 23 is formed on the lower surface of the main lock plate 11 on the −420a side of the joint lever 20, and the joint lever 20 is held in place by the tension spring 22. The auxiliary lock plate 15 is integrally connected to the main lock plate 11 via the joint lever 20 by rotating clockwise as shown by the solid line in FIG. be done.

Further, the joint lever 20 is rotated counterclockwise as shown by the chain line in FIG. 8 against the tension bar 22 to release its one end 20a from the locking portion 23, thereby releasing the connection. It is configured to

The other end 20b of this joint lever 20 is bent upward and inserted through the notch 16 of the main lock plate 11, and the bent end is configured as a retaining portion 24 for the return button 2. .

Further, the tension spring 22 constitutes an example of the third biasing means referred to in the present invention.

However, among the push buttons other than the stop button 1, other push buttons 2 to 5
An operating section 26 such as a lever is formed at the free end of each of the push buttons 2 to 5, and these push buttons 2 to 5 are operated by a lever mechanism for switching modes for rewinding, playback, fast forwarding, and recording. (not shown).

And at the bottom end of all the push buttons 1 to 5 there is a claw 2 for operating the lock plate.
7 is formed.

Note that the height and the amount of downward protrusion of these claws 27 are configured to be equal to each other.

On the other hand, the upper surface of the main lock plate 11 and the auxiliary lock plate 1
Claws 28 to 32 are formed on the upper surface of the push buttons 5 to face the winter melons 27 of the push buttons 1 to 5.

Among these claws 28 to 32, the height of the claw 28 corresponding to the stop button 1 (the amount of upward protrusion from the upper surface of the main lock plate 11) is as follows.

The chanting is made higher than the same height of the other claws 29 to 32,
The other claws 29 to 32 have the same height.

As a result, the pawl 28 is configured as a non-locking pawl, and the other pawl 29
32 is constituted by a lock pawl.

Furthermore, an engagement protrusion 33 corresponding to the engagement portion 24 of the joint lever 20 is formed on the lower surface of the rewind button 2 next to the pawl 27 .

As clearly shown in FIG. 6, an interlocking rod 3γ connected to a suction rod 36 of a plunger solenoid (hereinafter simply referred to as a plunger) 35 is interlocked with one end 15a of the auxiliary lock plate 15 which has been bent. ing.

Next, a mode switching operation using the above-mentioned push button device will be explained.

First, in the stop mode, all push buttons 1 to 5 are moved back as shown in FIGS. 5, 6 and 7.

In addition, the main lock plate 11 and the auxiliary lock plate 15 are also used in the 5.6.
It has been moved back to position A in Figure 7.

At this time, the joint lever 20 is in the position shown by the solid line in FIG. 8, and the auxiliary lock plate 15 is integrally connected to the main lock plate 11.

Therefore, in this connected state, the auxiliary lock plate 15 is rotated together with the main lock plate 11 about the fulcrum shaft 12.

[Switching from stop mode to playback mode] In stop mode, press (turn) playback button 3 as shown in the chain line in Figure 5.
The pawl 27 comes into contact with the cank pawl 30, and the main lock plate 11 is once rotated at position B 1 in FIG. 5 against the tension bar 13 by the cam action at this time. Get over it.

At the moment of this overcoming, the main lock plate 11 is moved back to the position A in FIG. It is locked at the position indicated by the chain line.

Then, the playback mode is switched by the playback button 3.

Note that when the fast forward button 4 or the record button 5 is pressed in the stop mode, the mode is switched to the fast forward mode or the record mode in exactly the same manner as described above.

Note that when switching the recording mode, the play button 3 is pressed at the same time as the normal record button 5.

[Switching from stop mode to rewind mode] In stop mode, press (rotate) rewind button 2 as shown in the chain line in Figure 6.
First, the protrusion 33 engages the engaging portion 24 of the joint lever 20.
, and push it to the left in Figure 6.

As a result, the joint lever 20 is rotated counterclockwise against the tension spring 22 as shown by the chain line in FIG. 15 bonds are released.

This release of the button allows the auxiliary lock plate 15 to rotate independently with respect to the main lock plate 11.

However, when the rewind button 2 is pressed, the protrusion 33 presses the engaging portion 24 and immediately after the above-mentioned connection is released, the pawl 27 comes into contact with the lock pawl 29 of the auxiliary lock plate 15, and the cam action at this time brings the auxiliary Once the lock plate 15 is pressed against the tension spring 18,
It gets over this locking pawl 29 while rotating at position B 1 in the figure.

At the moment of this crossing over, the auxiliary lock plate 15 is moved back to the position A in FIG. It is locked at the position indicated by the chain line.

Then, the rewind mode is switched by the rewind button 2.

Therefore, when switching from stop mode to rewind mode,
The main lock plate 11 is not operated in any way, and only the auxiliary lock plate 15 is operated independently to lock the rewind button 2.

[Switching from each mode to stop mode]

In the playback, fast forward, record, and rewind modes, any one of push buttons 2 to 5 is pressed (however, in the record mode, two push buttons, play button 3 and record button 5) are pressed.

In this state, when the stop button 1 is pushed (rotated) as shown by the chain line in FIG. Then, in Fig. 7, it is rotated to a large angle at position C.

As a result, the locking claws 29 to 27 are connected to the claws 27 of the push buttons 2 to 5.
32 is released, these push buttons 2 to 5 are unlocked, and each of these push buttons 2 to 5 is returned to the original position shown by the solid line in Fig. 5.6.8 by the spring force of the spring piece 9a. .

At this time, the stop button 1 is not locked by the claw 28, so when the stop button 1 is released and it is moved back in the same manner as above, the main lock plate 11 is also moved to the A position in FIG. 7 by the tension spring 13. The engine will move back and switch to stop mode.

When the stop button 1 is pressed in the 1 rewind mode, the rotation of the main lock plate 110 causes the auxiliary lock plate 15 to be pushed and rotated by the main lock plate 11, causing the lock pawl 29 to press the rewind button. 2, and the rewind button 2 is unlocked.

When the rewind button 2 is moved back to the original position indicated by the solid line in FIG. 6, the main lock plate 11 and the auxiliary lock plate 15 are
While being moved back to its original position, joint lever 2
0 is moved back clockwise by the tension spring 22 as shown by the solid line in FIG. That will happen.

When any of push buttons 3 to 5 other than that mode is selectively pressed in the middle of each mode of playback, fast forward, or recording, the main lock plate 11 is rotated in the same way as described above, and the button is pressed first. The pushbutton is unlocked and switched to the mode of the pushbutton that was later pressed.

Similarly, when any one of the push buttons 3 to 5 is selectively pressed during the rewind mode, the main lock plate 11 is rotated in the same manner as described above, and the rewind button 2 is unlocked and the button 2 is pressed. The button can be switched to push-button mode.

[Switching from playback mode to rewind mode] As mentioned above, when switching to rewind mode, the main lock plate 11 is not operated in any way, and only the auxiliary lock plate 15 is operated independently to lock the rewind button 2. Therefore, if the playback button 3 is pressed first and then the rewind button 2 is pressed, the rewind button 2 can be locked at 1 inch while the playback button 3 is kept in the locked state.

Therefore, priority is given to the rewind mode switching mechanism using the rewind button 2 over the playback mode switching mechanism using the playback button 3,
By configuring the system so that the rewind mode can be switched to when both the playback button 3 and the rewind button 2 are pressed, by pressing the rewind button 2 while the playback button 3 is pressed, the playback mode can be switched from the playback mode. You can switch to rewind mode.

[Switching from rewind mode to playback mode] In the rewind mode with the playback button 3 and rewind button 2 pressed at the same time as described above, the plunger 35 is energized and sucked as shown by the chain line in FIG. When the rondo 36 is pulled, the interlocking rod 37
The auxiliary opening plate 15 is pushed against the tension spring 18 through the sixth
It is rotated at C position 1 in the figure.

As a result, the lock pawl 29 disengages from the pawl 27 of the rewind button 2, the rewind button 2 is unlocked, and the rewind button 2 is returned to its original position as shown by the solid line in FIG. 6 by the spring force of the spring piece 9a. be moved.

At this time, since the main lock plate 11 is not operated in any way, the locked state of the playback button 3 by the lock pawl 30 is maintained, so the moment the rewind button 2 is moved back as described above, the rewind mode is changed to the playback mode. It will be automatically reversed immediately.

At this time, by moving the rewind button 2 back, the joint lever 20 is also moved back from the position shown by the chain line in FIG. 8 to the position shown by the solid line. It is again connected to the plate 11.

Therefore, after this connection, when the plunger 35 performs the suction operation described above, the auxiliary lock plate 15 is rotated clockwise in FIG. It will be rotated at the same angle in the direction.

Therefore, the plunger 35 can be operated in conjunction with a conventionally known shut-off mechanism or memory counter mechanism, and by driving the plunger 35 by the shut-off mechanism or memory counter mechanism, the rewind mode can be set. You can perform operations such as auto play and memory play from here.

That is, in the rewind mode in which both the playback button 3 and the rewind button 2 are pressed as described above, when the tape end is reached and the shutoff mechanism detects the tape end, or when the memory counter is set in the memory If the plunger 35 is configured to operate when detected, the 11th rewind button 2 with the playback button 3 locked will be unlocked, entering the playback mode, and so-called ode play or memory play can be performed.

At this time, when the tape end is detected by the shutoff mechanism, the plunger 35 is operated for the first time to switch to the playback mode, and in this playback mode, the memory plunger 35 set by the memory counter is operated for the second time. If configured as above, memory stop can be performed.

Similarly, the plunger 35 is operated when the tape end is detected in the middle of playback, fast forward, recording, and rewinding modes, and the shutoff mechanism detects the end of the tape, or when the memory counter detects the set memory. With this configuration, the push buttons 2 to 5 are unlocked to enter the stop mode, and a so-called auto stop or memory stop can be performed.

Although the embodiments of the present invention have been described above, if the same structure as that of the auxiliary lock plate 15 and joint lever 20 corresponding to the rewind button 2 is also provided for the fast forward button 4,
By pressing the play button 3 and the fast forward button 4 at the same time to switch to the fast forward mode, and operating the plunger 35 during the fast forward mode, the fast forward mode can be automatically reversed to the playback mode immediately.

Further, in the embodiment described above, the joint lever 20 was attached to the auxiliary lock plate 15 side, but even if it is attached to the main lock plate 11 side, the same operation as in the embodiment can be expected.

As mentioned above, this invention uses a rotating power type main lock plate for high-speed feeding.
A dedicated auxiliary lock plate is rotatably supported, and the auxiliary lock plate and the main lock plate are configured to be able to be coupled by locking or released by locking using a rotating lever and a locking portion. Therefore, automatic reversal from tape high-speed feeding mode to playback mode can be realized extremely easily using a rotating lock plate structure.

Since the lock plate structure of the rotation type can be used, the design of the prior application is completely impractical.

Piano touch type push buttons can be applied, and the push buttons are extremely light and do not require strong force to operate, making them extremely easy to handle, and the structure is simple as no special mechanisms such as lever mechanisms are required. , a product with high practicality such as low cost can be obtained.

Further, an auxiliary lock plate dedicated to high-speed feed is rotatably supported on the main lock plate, and a rotating lever is provided on one of the double-ended lock plates to be rotated and energized by a biasing means, and the other A locking part is formed for this rotation lever, and the auxiliary lock plate is connected to the main lock plate by locking, so that when the high-speed feed button is pressed, a part of this high-speed feed button rotates. Since the lever is directly pushed and the rotary lever is rotated against the biasing means to release the engaged connection, it was invented in the earlier application, and further disclosed in Japanese Patent Application Laid-Open No. 53-50808. and Utsukai Showa 53-35.5
Comparing it with the one described in Publication No. 01, it has a very good space factor, as intermediate members such as Reno-1 connection plates are no longer required, and the entire device can be made smaller. I can do it.

Furthermore, since the main lock plate and the auxiliary lock plate are connected by locking as described above, Japanese Patent Application Laid-Open No. 53-5080
Compared to the one described in Publication No. 8, there is no restriction on the arrangement of push buttons, and compared to the one described in Japanese Utility Model Application Publication No. 53-35501, there are fewer biasing means for resisting the operation of the high-speed feed button. This can eliminate the need for strong force for operation.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an exploded perspective view, Fig. 2 is a plan view, Fig. 3 is a front view, and Fig. 4 is an exploded perspective view.
The figure is a bottom view, Figure 5 is an enlarged cross-sectional view along the line 3-V, and Figure 6 is
The figure is an enlarged sectional view of Figure 3 vt-vt line, and Figure 7 is Figure 3 ■
8 is a bottom view of FIG. 6, FIG. 9 is a sectional view taken along the line X--X of FIG. 8, and FIG. 10 is a sectional view taken along the line X--X of FIG. 8. Also, the buttons used in the drawings are 1: stop button, 2: rewind button, 3: play button, 4: fast forward button, 8: fulcrum shaft, 9:
1 is a leaf spring, 11 is a main lock plate, 12 is a fulcrum shaft, 13 is a tension spring, 15 is an auxiliary lock plate, 17 is a fulcrum shaft, 18 is a tension spring, 20 is a joint lever, 21 is a fulcrum shaft, 22
is a tension spring, 23 is a locking part, 24 is an engaging part, 27.28
is a claw, 29, 30, 31 is a locking claw, 33 is a retaining projection, and 35 is a plunger solenoid.

Claims (1)

[Scope of utility model registration request] At least three push buttons: a play button, a high-speed forward button for rewinding or fast-forwarding, and a stop button, which lock when the play button is pressed, and which of the play button and the high-speed forward button A rotatable main lock plate configured to release the lock when the stop button is pressed while one of the lock plates is pressed and locked, and for returning the main lock plate to the locked position. a first energizing means, an auxiliary lock plate dedicated to the high-speed transfer button rotatably supported on the main lock plate, and a second energizer for returning the auxiliary lock plate to the lock position. A rotary lever is provided on one of the main lock plate and the auxiliary lock plate, a locking portion for the rotary lever is formed on the other, and the locking portion is further provided with a rotary lever. a third biasing means for rotationally biasing the rotary lever to lock the lever;
When the high-speed feed button is pressed while the playback button is pressed and locked by the main lock plate, the second part of the high-speed feed button pushes the rotary lever to move the rotary lever to the By rotating against the third biasing means, the locking connection of the auxiliary lock plate to the main lock plate is released, and the auxiliary lock plate is rotated independently, thereby pressing the regeneration button. The high speed feed button is configured to be locked while the playback button and the high speed feed button are locked, and the auxiliary lock plate is rotated by other means while the playback button and the high speed feed button are locked. unlocking the high-speed forwarding button at a time when the playback button is held locked;
(j) A push button device for a recording/reproducing device, which is configured such that the return movement of the high-speed feed button causes the rotation lever to move back and the auxiliary lock plate is re-latched to the main lock plate.