JPS6224334Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing double pressing of an operation button in a mechanical soft tape recorder.

Recently, so-called mechanical soft type tape recorders have been commercially available. This kind of thing is
The operation of various operation buttons is made mechanically easier by using the power of a built-in motor.
The drive cams are linked via a gear mechanism, and when the operation button is pressed, the gear mechanism is controlled to rotate the drive cam once.The drive cam causes the drive plate to reciprocate once, and when the operation button is pressed, the drive plate An intervening object is interposed between the drive plate and the internal main mechanism (mechanism body), and the internal main mechanism is mechanically and automatically operated via the intervening object by the reciprocating movement of the drive plate. In other words, the operation button only controls the easily operable gear mechanism and intervenes, and the main operation of the main internal mechanism (mechanism body) is performed by the drive plate driven by the motor.

By the way, in this type of device, the various operation buttons generally return to normal immediately after being pressed by hand, so the user may mistakenly think that they have not been pressed and press the button twice, or the button may be pressed twice by mistake. This double press is not much of a problem in the case of operation buttons such as fast forward, rewind, and stop, but in the case of playback and recording buttons, the mechanical load of operating the drive plate is applied to the built-in motor, so This causes speed unevenness in tape running, which also causes noise, and furthermore, causes erasure of previously recorded data.

The present invention attempts to easily eliminate such drawbacks.

The illustrated embodiment will be described below.

In the figure, 1 is the shaft of a flywheel that is supported on the chassis and driven by a motor, and 2 is
A drive gear fixed to the shaft; 3 is a driven partially toothed gear arranged to mesh with the drive gear; and 4 is an egg-shaped cam provided integrally with the driven partially toothed gear. , 5 and 6 are provided inside and outside integrally with the driven partially toothed gear, and the abutment surface of the outer one is moved forward by approximately 70 degrees than the abutment surface of the inner one, and 7 is a stopper cam that is pivotally supported on the chassis 7a. , the stopper lever 9, which is biased by a spring 8 and normally causes the pin 7b to abut against the abutting surface of the inner stopper cam 5, is actuated by pressing various operation buttons to operate the stopper lever 7 against the spring. Trigger plate, 10 to 14 are various operation button levers, 10 is a playback button lever, 11 is a recording button lever, 12 is a fast forward button lever, 13 is a rewind button lever, 14 is a stop button lever, 15
is a drive that is supported by the chassis so as to be able to slide laterally, is urged by a spring 16, is pressed against the drive cam 4, and has a plurality of windows 17 arranged in correspondence with the various operation button levers in the direction of movement thereof. The horizontal shafts 19 of the plates 18 corresponding to the windows 17 are supported on the horizontal shafts so as to be movable and rotatable, and are supported by springs 20, respectively.
The position is maintained by..., and the operation button lever 10~
14 are arms that are rotated in conjunction with each other and inserted into the window 17; 21 to 25 are various operating levers of the mechanism body that are operated by the lateral movement of these arms; 21 is a playback operating lever; 22 is a recording lever; The operating levers 23, 24, and 25 are a fast forward operating lever, a rewind operating lever, and a stop operating lever, respectively.

When the recording button lever 11 is pushed in, the reproduction button lever 10 is moved in conjunction with the recording button lever, so that the reproduction button lever is moved by the recording button lever.

Thus, the arms 19... have tip portions 19a...
is configured to be inserted into the window 17 by rotation, and has a relatively wide width at its tip, and has a locking claw 19b on one side and an operating piece 19c on the other side. protruding from the back, and a protrusion 19d...
is provided protrudingly, and the spring 20 is applied to the protrusion, and the spring urges it in the direction of coming out of the window 17, and the rear end 19e is abutted against the operation button levers 10 to 14. There is.

The operating levers 21 to 25 have passive pieces 21a to 2 corresponding to the operating pieces 19c of the arms 19.
5a protrudes, and when the arm tip 19a... is inserted into the window 17..., the passive pieces 21a to 2
5a faces the operating pieces 19c and receives the force of the lateral movement of the arms 19.

In particular, the regeneration actuating lever 21 has a planar shape approximately T-shaped, its central portion is pivotally connected to the chassis 21b, and the passive piece 21a is protruded from one side edge of the central piece 21c. A pressing piece 21e is provided protrudingly at the tip of the one side piece 21d, and is made to face the rear side of the head chassis 26 which is slidably attached to the chassis in the front and back direction, and an engaging claw is provided at the tip of the other side piece 21f. 2
1g protrudes, and connects it to the stop actuation lever 25.
This corresponds to the engaging portion of the lock plate 27 which is released by the operation of the lock plate 27. In addition, the center piece 21
A stopper piece 21h is provided at the other end corner of the arm 19 so as to abut against the operation piece 19c of the arm 19 to prevent the arm from rotating when the arm 19 rotates.

Next, regarding the operation, in the stop position, the state is as shown in Fig. 1, and any button lever 1 is pressed.
When 0 to 14 are activated, the stopper lever 7 is pushed around against the spring 8 via the trigger plate 9, and the pin 7b of the stopper lever is disengaged from the inner stopper cam 5. At the same time, the button lever causes the corresponding arm 19 to be inserted into the window 17 of the drive plate 15.

When the pin 7b is removed from the stopper cam 5, the stopper cams 5, 6, the driven partially toothed gear 3, and the drive cam 4 become free, and the elasticity of the spring 16 acts on the drive cam 4 via the drive plate 15, causing the drive cam 4 to react. By rotating slightly clockwise, the driven partially toothed gear 3 meshes with the rotating drive gear 2, and the driven partially toothed gear 3 continues to rotate counterclockwise.

Due to this rotation, the drive plate 15 is moved to the left by the drive cam 4 against the spring 16.
Thereafter, it returns to its original state due to the elasticity of the spring 16. At this time, when the toothless part of the driven gear 3 comes to the location of the drive gear 2, rotation by the drive gear is cut off.
The elasticity of the spring 16 acts on the drive cam 4 via the drive plate 15, causing it to rotate once to its original position, where the pin 7b of the stopper lever 7 connects with the stopper cam 5 again and stops, and the drive plate 15 then rotates once. Go back and forth.

One reciprocation of this drive plate 15 corresponds to the window 17
The arm 19 inserted into the holder is moved laterally, and the operating piece 19c of the arm pushes the passive pieces 21a to 25a of the actuating levers 21 to 25 to actuate the actuating lever, allowing the mechanism body to perform playback, recording, fast forwarding, rewinding, etc.
Obtain various stop operations. Even after the drive plate 15, arm 19, and operation button lever return, the operating state of the mechanism main body other than the stop is maintained by the locking means in the mechanism main body, and is released by the stop operation. The arm 19, which is moving laterally, engages the locking claws 19b with the edges of the windows 17 to obtain its insertion position.

By the way, in the case of regeneration, when the regeneration operation lever 21 is actuated (rotated) in this way, the regeneration operation lever 21 pushes the head chassis 26 with the pressing piece 21e, advances the head chassis to the regeneration operation position, and , the engaging claw 21g engages with the engaging portion 27a of the lock plate 27, and this position is maintained even after the drive plate 15, arm 19, and operation button lever return.

When the regeneration operation lever 21 rotates and is held engaged, the stopper piece 21h of the regeneration operation lever 21 is positioned below the operation piece 19c of the arm 19, and the next rotation of the arm 19 is performed. This also prevents the recording button lever 11 from being pressed twice, which causes the playback button lever to follow.

According to the present invention, it is possible to prevent the playback/recording button from being pressed twice when the playback/recording button is in operation, and to prevent the user from pressing the playback/recording button again after pressing it once or mistakenly thinking that it has not been pressed. Even if the button is pressed twice, the operation button will not move, preventing uneven tape running speed and noise caused by pressing the button twice.

The structure is extremely simple, the cost is low, and it is extremely useful in practice.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is an enlarged plan view of main parts, and FIG. 3 is a side view of the same as shown in FIG. 2. 2... Drive gear, 3... Driven partially toothed gear, 4...
Drive cam, 5, 6... Stop cam, 7...
Stopper lever, 9...Trigger plate, 10
~14... Button lever, 15... Drive plate, 17... Window, 18... Horizontal shaft, 19... Arm, 21-25... Operating lever, 21a... Passive piece, 21h... Stopper piece, 19c ...Operation piece,
26...Headshield, 27...Lock plate.

Claims (1)

[Scope of utility model registration request] By operating the button levers 10 to 14 for playback, recording, fast forward, rewind, stop, etc., the drive plate 15 and the built-in motor are temporarily linked mechanically to obtain one reciprocating motion of the drive plate 15, and Arm 19 corresponding to the button lever of...
is temporarily intervened between the drive plate 15 and the operating levers 21 to 25 for playback, recording, fast forward, rewind, stop, etc. of the mechanism main body, and the power of one reciprocation of the drive plate 15 is transferred to the arm 19.
In a mechanical soft type tape recorder configured to obtain mechanical operation on the mechanism main body by transmitting the signal to the operating lever via... A device for preventing double-pressing of an operation button in a mechanical soft tape recorder, characterized in that a stopper piece 21h that prevents re-intervention between the playback operating lever 21 and the drive plate 15 is provided in correspondence with the arm 19. .