KR830001163Y1 - Control of operating function - Google Patents

Abstract

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Description

Mode switch for recording and playback device

1 is a plan view of the upper chassis removed.

2 is a cross-sectional view taken along the line II-II of FIG.

3 is a cross-sectional view taken along the line III-III of FIG.

4 is a cross-sectional view taken along the line IV-IV of FIG.

5 is a plan view of the upper chassis portion.

6 is a perspective view taken along the line VI-VI of FIG.

7 is a plan view showing a relationship between a mode switching lever, a moving lever, a gear wheel, and a cam fixed to the gear wheel shown in FIG.

8A and 8B are plan views showing the relationship between the locking lever, the moving lever, the gear wheel and the cam fixed thereto.

The present invention relates to a mode switching device which is very suitable to be applied to a recording and reproducing apparatus such as a tape recorder or a VTR, and has an extremely simple structure, which provides a device that can mechanically and extremely clearly determine the mode to be switched. will be.

The present invention provides a plurality of pushbuttons having substantially different forward positions, and a mode selection member for operating the pushbuttons at various different operating positions according to the reciprocating positions of the pushbuttons when they are selectively pressed. And a mode switching member for allowing a plurality of operation positions to be selected according to the operation position of the mode selection member, and the mode switching member to be driven at any of the above positions. The present invention relates to a mode switching device for a recording and reproducing apparatus.

Hereinafter, an embodiment in which the present invention is applied to a tape recorder will be described with reference to the drawings.

First, (1), (2), (3), (4) and (5) are individual pushbuttons for Rewind, Stop, Play, Transpose (FF) and Record. And they are arranged in a row as shown in FIG. Each of these push buttons is composed of a member which is mounted on a member such as an upper chassis 6a or a cabinet and can move up and down individually.

Also, other push buttons except for stop button (2), that is, push buttons (1), (3), (4), (5) for mode switching are locked devices (not shown) at the positions where they are pressed, i.e. It is configured to be individually determined by. When the stop button 2 is pressed, the locking device is released so that the push button for mode switching, which has been pressed first, is returned to its original position.

And at the lower ends of the four mode switching pushbuttons (1), (3), (4), (5) protrusions (7), (8), (9), (10) protruding downward It is installed. In addition, the lengths of the protrusions 7, 8, 9, and 10 are different, that is, the protrusions 7 of the rewind button ₁ are formed to have the longest dimension L ₁ , and the following feeding The projections 9 of the button 4, the projections 8 of the recycled button 3, and the projections 10 of the molten button 5 become shorter in order (l ₂ ), (l ₃ ), ( l ₄ ).

Therefore, the lower button of the rewind button (1) and the projection (7) will be at the position of the lowest a, and the lower button of the projection (9) of the feeding button (4) will be reproduced. The positions of b, c, and d which increase in the order of the lower end of the projection 8 of the button 3 and the lower end of the recording button 5 projection 10 are reached.

As a result, the substantial forward positions of the pushbuttons 1, 3, 4, and 5 for mode switching are changed in four stages. The switch operating levers 12 are arranged at the lower ends of the push buttons 1 to 5, and the mode selection levers 13 are arranged in parallel with each other under the lever 12. These levers 12 and 13 are supported by the support pins 14 and 15 at their left and right ends, and move upward and downward in the lower chassis 6b. In addition, the switch operating lever 12 is lifted by the switching operating piece 16 as shown in FIG.

In addition, the mode selector 13 is adapted to operate upwardly (counterclockwise) by the return spring 19 associated therewith, as shown in FIG. Except for the recording button 5, the three push buttons for switching a mode (1), (3), and (4) of each of the projections (7), (8), and (9) are the switch operation levers (12). Protrudes downward through the three slits 20 formed in the presses and when the push buttons are pressed, the mode selection lever 13 at the bottom of the projections 7, 8 and 9 is pressed. The lever 13 is configured to operate in the clockwise direction shown in FIG.

In addition, the projection 10 of the recording button 5 is in contact with the switch operating lever 12, when the recording button 5 is pressed, the mode selection lever 13 is not moved at all. In addition, when the three mode switching pushbuttons (1), (3), (4) is pressed, the switch operating lever 12 is individually pressed at the lower end of the protrusion 10, as shown in FIG. It is configured to move clockwise as shown. The lever 12 moves clockwise, and the switch operating piece 16 presses the mover 17a of the micro switch 17. With respect to the stop button 2, the switch operation lever 12 is comprised so that it may not move at all even if the stop button 2 is pressed by the hole 22. As shown in FIG.

As described above, since the substantial forward positions of the three-button switching buttons 1, 4, and 3 are different in three stages as shown in a, b, and c, these pushbuttons are selectively pressed. As the weight increases, the operation amount of the mode selection lever 13 moved clockwise is also changed in three steps. In other words, when the rewind button 1 is pressed, the mode selection lever 13 is moved to the position a 'in FIG. 4, and when the feeding button 4 is pressed, the position of b' and the regeneration button 3 When is pressed, move each to the position of c '. Even if the recording button 5 is pressed, the mode selection lever 13 does not move but stays in the stopped position at d in FIG.

By the above, the mode selector lever 13 has three operation positions a corresponding to the positions of a, b, and c, which are the forward positions of the three mode switch pushbuttons 1, 4, and 3. to work with ', b', c '.

In addition, an end portion on the opposite side of the pressing position by the push button of the mode selection lever 13 is formed of three lever steps 24, 25, 26 in a staircase shape.

On the other hand, as shown in FIG. 5, on the upper chassis 6a, the slide arms for recording and playback (a) 28, the feeding slide arm 29, and the rewinding slide arm 30 are installed in parallel with each other. It is. In addition, these three slide arms 28, 29, and 30 are provided with elongated holes 32 for receiving a pair of guide pins 31 extending from the upper chassis 6a, respectively. The guide pin is configured to slide.

Among them, the reproducing slide arm 28 is interlocked with a reproducing mode switching mechanism (not shown) such as a head substrate or regenerating idler, and the feeding slide arm 29 is a coordinating mode switching mechanism such as a rapid feeding (fast drive) idler (shown). And the rewind slide arm 30 is also interlocked with a rewinding mode switching mechanism (not shown) such as a rewinding idler. The lever 34 is a mode switching lever for selectively operating the three idler arms 28, 29 and 30 to perform four mode switching of playback, recording, feeding and rewinding. The mode switching pin 35 provided at the distal end of the mode switching lever 34 protrudes upward through the hole 36 of the upper chassis 6a as shown in FIG. 35 is configured to selectively drive the three slide arms 28, 29, 30 on the four operating lines A, B, C, D shown in FIG.

At this time, the mode switching pin 35 drives the protruding pins 28a, 30a formed as the regeneration and rewind slide arms 28, 30, and the tip 29a of the feed slide arm 29. Drive.

However, the grooves 37 are formed at two positions on the protruding pieces 28a of the reproducing slide 28 to face the operating line of D.C. The plunger solenoid (hereinafter referred to only as plunger) 39 is shown as one example of a drive mechanism for driving the mode switching lever 34 and is fixed to the lower chassis 6b.

Next, the driving mechanism of the mode switching lever 34 by the mode switching lever 34 and the mode selection lever 13 value relationship and the plunger 39 will be described. Reference numeral 42 is a capstan, in which a drive gear 43 is fixed. The gear wheel 44 is formed of an engagement portion 44a which is to be driven one rotation by the drive gear 43 and is supported by the gear shaft 45 as a rotating material on the lower chassis 6b. It is. In addition, a cam 46 is provided on the upper surface of the gear wheel 44.

The shift lever 47 is rotatably supported by the support pin 48 on the lower chassis 6b and is moved by the return spring 49 to move in the counterclockwise axis shown in FIG. to be. In addition, the mode switching lever 34 is supported on the front end of the moving lever 47 by the support pin 50 at the other end thereof. The stop lever 51 is a substantially L-shaped lever which is supported by a rotational material on the lower chassis 6b on the support plate 52, and the rotational position of the stop lever 51 is arranged so as to intersect at right angles thereto. It is selected in four steps by the odd selection lever 13. The interlocking lever 53 is pivotally connected at one end with respect to the support pin 54 fixed to the stop lever 51, and the lower end thereof is an elongated hole into which the pin 55 mounted downward from the mode switching lever 34 is inserted. This is snowy.

The conversion lever 57 is rotatably supported by the support pin 58 on the lower chassis 6b, and one end of the conversion lever 57 is extended by the movement lever 59 to the extension rod 60 of the plunger 39. It is linked to). The conversion lever 57 is arranged in an elongated hole 62 in which a pin 61 fixed to the other end side thereof is formed on the other end shaft of the interlocking lever 53. In addition, the movement lever 53 is reversed to the upper axis as shown in FIG. 1 by the torsion spring 63, and the conversion lever 57 is the first by the return spring 64 connected between the interlocking lever 53. It is designed to operate clockwise as shown in FIG. The locking lever 65 is mounted on the movable lever 47 so that its one end shaft can be rotated around the support pin 60, and the locking lever 65 is connected with the movable lever 47. 67) to rotate in the counterclockwise direction shown in FIG. The locking lever 65 is always pressed against the locking pin 68 extending from the lower chassis 6b. In addition, two locking portions 65a, 65b for the locking pin 68 and protrusions 65c and 65d for releasing the locking lock are formed on the locking lock lever 65.

The locking lever 69 pivotally connects one end thereof on the conversion lever 57 by the support pin 70 and rotates counterclockwise as shown in FIG. 1 by the return spring 71. As shown in FIG. The release burr. At the distal end of the lock release lever 69, a pin 72 for unlocking the lock is provided. The locking lever 73 is rotatably supported by the support pin 74 on the lower chassis 6b, and is also rotated counterclockwise as shown in FIG. 1 by the return spring 75. Lever. In addition, the gear-locking lever 73 has a lower side of the adjacent gear wheel 44 at its distal end.

Next, the actual mode switching operation will be described.

First, FIG. 1 shows a stationary mode, in which the respective levers and pins are placed in the reverse position in the drawing, but in particular, the mode switching pin 35 of the mode switching lever 34 is shown in FIG. Stops at position A 'on the working line of D. When the power is turned on in this state, the capstan 42 is rotated counterclockwise, but the drive gear 43 is rotated without engaging the gear wheel 44 by the toothless segment 44a (see Fig. 7). ).

Next, the switching operation from the stop mode to, for example, the recording mode will be described.

First, when the recording button 5 is pressed, the switch operating lever 12 is rotated as described above, the actuator 17a of the micro switch 17 is pressed, and the micro switch 17 is turned on and the plunger is turned on. (39) is here. Since the green button 5 is locked as it is in the pressed position, the micro switch 17 is kept in the on state.

Thus, when the plunger 39 is turned on, the extension rod 60 is pulled out and the conversion lever 57 is rotated counterclockwise as shown in FIG. Is pulled down the shaft as in FIG. The pin 72 then presses the projection piece 65C of the locking lever 65 and the lock lever 65 is rotated clockwise in FIG. 1 against the torsion spring 67 (FIG. 8A), The clamping part 65a is peeled off the lock pin 68, and the unlocking of the moving lever 47 is performed. At the same time, the locking lever 65 pushes the pin 77 'and the gear-locking lever 73

At this time, the interlocking lever 53 is pulled by the return springs 64 and 64 and the auxiliary lever by the counterclockwise rotation of the conversion lever 57, and the stop lever 51 is turned as shown in FIG. In order to rotate clockwise, the stop lever 51 is at the top of the lever lever 24 at the top of the mode lever 13 because the mode selection lever 13 is stopped at the forward position of d 'in FIG. Crash on and the movement is stopped. That is, at this time, the stop lever 51 is stopped at the position of "d" in FIG. 1. Therefore, since the interlock lever 53 is almost stopped at this time, the mode switching pin 35 is on the operation line of FIG. It is kept in the stopped state at the position of A '.

On the other hand, in the locked state, the swing lever 47 is once moved by the return spring 49 to the counterclockwise side shown in FIG. 1 about the support pin 49 and the gear wheel 44 by the cam 46. ) Is rotated only slightly in the clockwise direction shown in FIG.

Thereby, the gear wheel 44 is rotated clockwise as shown in FIG. 1 by the drive gear 43 in which the gear wheel 44 is engaged with the drive gear 43 and rotates together with the capstan 42. . Also at this moment, the fifth and seventh steps of the mode switching pin 35 of the mode switching lever 34 retreat from the position of A 'on the working line of D shown in the drawing to the position of B'.

When the gear wheel 44 starts to rotate, the swing lever 47 is moved largely to the clockwise side shown in FIG. 1 by the cam 46 against the return spring 49. 34 is moved in the left direction shown in FIG.

At this time, since the pin 55 is guided in the elongated hole 56, the mode switching pin 35 is approximately in a straight line from the position of B 'to the position of C' on the operation line of D shown in FIG. Move forward.

As a result, the mode switch pin 35 presses the projection piece 28a of the regeneration slide arm 28, and slides the regeneration slide arm 28 in the left direction shown in Figs. Puts the system into a refresh mode. However, at this time, since the mode switch pin 35 presses the actuator 78a of the micro switch 78, the micro switch 78 is turned on and the electric circuit is switched from the playback state to the recording state so that the desired recording mode is achieved. The switch to Aether is lost.

In addition, while the movable lever 47 is rotated in the clockwise direction as shown in FIG. 1, the switch operating portion 47a provided on the movable lever 47 presses the mover 77a of the microswitch 77 and Switch 77 on. Then, the conduction of the plunger solenoid 39 is cut off, and the interlocking lever 59, the converting lever 57, the locking subsea lever 69, etc. are returned to their original positions by the action of the return spring 64, 71, or the like. Is returned.

Therefore, the conduction time of the plunger 39 is very short and the power consumption required for the conduction is extremely small.

Then, when the gear wheel 44 rotates by a predetermined angle, the mode changeover pin 35 moves the regeneration slide arm 28 to the position C 'on the operation line of D shown in FIG. The locking lever 65 is engaged with the locking lever 68 by the locking portion 65b, and the moving lever 47 is again locked. Thus, the mode switching pin 35 stops at the position C 'and then the regeneration slide arm 28 is locked to the mode switching pin 35 at the position. In addition, the gear wheel 44 rotates approximately once, and then comes off from the drive gear 43 by the engaging portion 44a to stop. By the above

In this tape recorder, when switching between different modes of playback, recording, feeding, and winding, it is configured only after a stop mode is performed between them.

When the stop button 2 is pressed in the green mode, the lock of the green mode 5 is released and it returns to its original position. At this time, the switch operating lever 12 is returned to its original position, and the microswitch 17 is turned off. Then, this time, the plunger 39 is turned again by turning off the micro switch 17, and the conversion lever 57 is rotated counterclockwise as shown in FIG.

At this time, the tip portion 65d of the pin 72 of the lock release lever 69 and the lock lever 69 is pressed, and the lock lever 65 is rotated slightly in the clockwise direction shown in FIG.

At this time, the lock portion 65b is peeled off from the lock pin 68, and the moving lever 47 is slightly moved from the stop position to the counterclockwise side as shown in FIG. The mode switching pin 35 of the switching lever 34 is almost linearly retracted from the position of C 'to the position of A' on the operation line of FIG. 5d. In addition, when the moving lever 47 is slightly moved as described above, the locking lever 65 is caught by the locking pin 28 again by the locking unit 65a, and the moving lever 47 is reset to its original position. In addition, the cam 49 by the return of the moving lever 47

Since the pin 35 is returned to the position of A 'on the operation line of FIG. 5d, the regeneration slide arm 28 is also returned to the original position accordingly, and the moving lever 47 is returned, whereby the microswitch 77 Is off again. This time, conduction of the plunger 39 is cut off by turning off the microswitch 77. In addition, the mode switching causes the pin 35 to be reversed to the position A 'on the operation line of FIG. 5d, so that the microswitch 78 is turned off again and the electric circuit is switched back to the regeneration state.

By the above, switching to a stop mode is completed.

In this way, when the regeneration button 3 is pressed on the stationary mode, the mode selection lever 13 is rotated to the position C 'in FIG. In addition, the stop lever 51 is thereby rotated up to an angle impinging on the lever regulating surface 25, that is, to the position of C shown in FIG. 1. Rotate clockwise as shown in FIG. 1 on the mode switching pin 35, and the mode switching pin 35 is moved to the position of A 'on the operation line of C shown in FIG. On the operation line, the forward and backward linear movement is performed substantially linearly as described above. As a result, the regeneration slide arm 28 slides in the left direction in FIG. 5 to switch to a predetermined regeneration mode. In this case, however, the micro switch 78 is not turned on because the projection switch pin 35 presses the projection piece 28a at a position away from the mover 78a of the micro switch 78.

In addition, when the feeding button 4 is pressed on the stationary mode, the mode selection lever 13 is rotated to the position b 'shown in Fig. 4. The stop lever 51 hits the lever step 26 by this. Is rotated to the position b "shown in FIG. 1. At an angle according to this, the mode switching lever 34 is rotated clockwise as shown in FIG. 1, and the mode switching pin 35 is rotated to the fifth position. It moves to the position of A 'on the operation line of B shown in the figure, and performs the forward and backward movement as described above on this operation line of B. As a result, the mode switching pin 35 By this, the feeding slide arm 29 slides to the left in Fig. 5, and the switching to the desired feeding mode is carried out. Is rotated greatly in the position shown in Fig. 4. At this time, the selector lever 13 One stop lever 51 is not regulated and the stop lever 51 is greatly rotated to the position "a" of FIG. 1. Due to this, the mode switching lever 34 is enlarged clockwise as shown in FIG. Rotated, and the mode changeover pin 35 performs a substantially general reciprocating motion as described on the operating line of A shown in FIG.

Although the embodiments of the present invention have been described above, other changes are possible due to the technical idea of the present invention.

For example, in the embodiment, the lengths of the protrusions 7, 8, 9, and 10 are the same as the forward and backward movement strokes of the push buttons 1, 3, 4, and 5. It is also possible to change the substantial forward positions of these pushbuttons 1, 3, 4, and 5 by changing.

In addition, the present invention can be widely applied to various recording and reproducing apparatuses such as VTRs without being limited to tape recorders.

In addition, the push button according to the present invention can be changed into various effective structures such as moving forward and backward by rotation without being limited to the linear manner shown in the embodiment.

The present invention uses a plurality of push buttons having substantially different forward and backward positions as described above, and is configured so that the desired mode switching can be performed due to the forward position when they are selectively pressed. Nevertheless, it is possible to mechanically and extremely precisely determine which module to switch to, so that extremely accurate mode switching can be performed.

Claims (1)

In a mode switching device for a recording / reproducing apparatus, a plurality of push buttons (1, 2, 3, 4, 5) are configured to press to different operating positions, and the mode selection lever 13 is pressed selectively for a push button. In order to move to various positions according to the configuration, the mode switching lever 34 is configured to be moved to various operating positions in accordance with the movement of the selection lever and the drive device (42, 43, 44) A mode switching device for a recording and reproducing apparatus configured to be positioned at any one of the operating positions.