JPS585463B2 - Sentaxusakikou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a selection operation mechanism used in magnetic recording/reproducing devices, etc., and in particular to a selection operation mechanism that allows a predetermined operation to be reliably selected by simply pressing a predetermined push button lightly for only a moment. It is.

The selection operation mechanism according to the present invention includes a plurality of operation push buttons, each of which is movably arranged in correspondence with the operation push button, and a first
is constantly biased in the backward motion direction by the biasing means,
a plurality of selection levers that move in the forward direction against the first biasing means when the operation push button is operated; a plurality of operating elements arranged corresponding to the plurality of selection levers; and the second biasing means, the device is constantly biased in the backward direction;
A common slider for the plurality of selection levers that is moved in the forward direction by the driving means against the second biasing means, and a common operating member that is moved by the pressing operation of the plurality of operating push buttons. and a common locking means for locking the plurality of operators in their operating positions, and when a desired operation push button is operated, the selection lever corresponding to this push button is moved in the forward direction. The slider is moved and connected to a predetermined operating element, and the driving means is actuated by the movement of the operating member, the slider moves forward together with the selection lever, and the operating element corresponding to the operated push button is placed in a predetermined operating position. the operator is brought to the operating position, and the operating element is locked in its operating position by the locking means to set the desired operating state;
When the pressing operation force acting on the desired operating push button is released in this state, the desired selection lever is activated by the first biasing means while the locking means holds the predetermined operating element in the operating position. At the same time, the driving force of the driving means is released, and the slider is moved back by the second biasing means until the desired operation push button is operated. The operating state of the controller is maintained.

The figures will be explained below, taking as an example the case where the push button selection operation mechanism is used in a magnetic recording/reproducing device.

In the figure, 1A is a push button for stop operation, 1B is a push button for normal forward operation, 1C is a push button for normal reverse operation, 1D is a fast forward operation push button, and 1E is a rewind operation push button.

To explain the push button 1B for normal feed operation in the forward direction,
This is a lever 3B rotatably attached to a common shaft 2.
The protrusion 4B is integrally attached to one end of the protrusion 4B.

Further, the lever 3B is pivoted upward by the spring 5B.

Note that 6B is a stopper. Other push buttons 1A, 1C~
1E is similarly configured.

Selection levers 8A to 8E attached to a common sliding plate 7 are arranged below each of these operation push buttons 1A to 1E.

That is, a common sliding plate 7 extending in the arrangement direction of the push buttons 1A to 1E is disposed, and a selection lever 8B is connected to a common shaft 9 on this sliding plate 7 below the lever 3B provided with the push button 1B. It is rotatably mounted on the

As will be described later, this lever 8B is formed with, for example, a protrusion 10B projecting downward as a retaining means that engages with the operating lever when the push button 1B is pressed.

This lever 8B is also pivoted upward by the spring 11B.

Note that the lever 8B has a downwardly protruding portion in FIG.
That is, in FIGS. 1 to 3 and 5, a protrusion 12B protruding toward the front side of the paper is integrally formed, and a notch 13B is formed in the sliding plate 7 at a position corresponding to the protrusion 12B.
An L-shaped locking plate 14B is rotatably attached to the sliding plate 7 within this notch 13B about a shaft 15B.

In this case, the lock plate 14B is moved by the arrow 1 by the spring 16B.
It is rotationally biased in the direction indicated by 7.

Mechanisms related to the other selection levers 8A, 8C to 8E are similarly configured.

Note that the sliding plate 7 is biased in the direction of an arrow 19 by a spring 18.

Operating levers 20A to 20E for operating the drive mechanism of the magnetic recording/reproducing device are arranged below each of the selection levers 8A to 8E.

That is, an operating lever 20B that brings the drive mechanism into a normal feeding state in the forward direction is arranged to extend in the extending direction of the lever 8B.

This lever 20B has a selection lever 8 when the push button 1B is pressed.
A through hole 21B is formed which engages the protrusion 10B of B, and the lever 20B is biased in the direction shown by arrow 23 by the biasing force of the spring 22B.

The other operating levers 20A, 20C to 20B are similarly configured.

On the other hand, locking means for holding each of these operating levers 20A to 20E in its operating position is provided.

That is, as shown in FIG. 4, a lock plate 24 extending above the levers 20A to 20E in the direction in which these levers 20A to 20E are arranged has a locking protrusion at a position corresponding to the operating levers 20A to 20E, respectively. 25A to 25E are each integrally formed.

And protruding pieces 25 corresponding to the operating levers 20B to 20E.
Tapered portions 26B-26E and engagement notches 27B-27E are formed in B-25E, respectively.

However, the protruding piece 25A corresponding to the operating lever 20A that brings the drive mechanism into a stopped state does not have an engaging notch, but only a tapered part 26A.

Note that this locking plate 24 is biased in the direction shown by an arrow 29 by a spring 28.

On the other hand, each of the operation levers 20A to 20E has a lock plate 24.
Engagement protrusions 30A to 30E are integrally formed at positions corresponding to the locking protrusions 25A to 25E.

Furthermore, a switch means is provided which is switched to a - state when any one of the push buttons 1A to 1E is pressed.

That is, below the operation levers 20A to 20E, a common switch operation plate 31 extending in the arrangement direction thereof is rotatably mounted on a shaft 32, and a common micro switch 33 is arranged below this operation plate 31. , the operator 34 is arranged to face the switch operation plate 31.

Recesses 35A to 35E are formed in the operation plate 31 at locations below the selection levers 8A to 8E, respectively.

On the other hand, a plunger 36 is provided as a common driving means controlled by this switch 33, and its operation frame 3
7 is connected to the sliding plate 7, and a plunger 36 allows the sliding plate 7 to move in one direction, that is, in the direction indicated by the arrow 38.

In addition, the lock plates 14A to 14E attached to the sliding plate 7
Cam plates 39A to 39E are provided at positions corresponding to the lock plates 14A to 14E, respectively, as release means for the lock plates 14A to 14E.

In the above-described configuration, when the machine is in a stopped state, the operating section for normal feeding in the forward direction is in the state shown in FIG. 1, and the other operating sections are in the same manner.

To perform normal feeding in the forward direction from this state, lightly press the normal feeding push button 1B in the forward direction.

When the push button 1B is pressed, the selection lever 8B is pressed downward by the protrusion 4B as shown in FIG.
By being located at the position of the engaging through hole 21B of 0B, the protrusion 10B passes through the through hole 21B of the lever 20B and presses the switch operation plate 31.

Therefore, this operation plate 31 presses the operator 34 of the switch 33, and the switch 33 is turned on.

On the other hand, since the lock plate 14B is rotationally biased in the direction shown by the arrow 17 by the spring 16B, when the selection lever 8B is pushed downward and the switch 33 is turned on, the claw formed at one end of the lock plate 14B simultaneously 40B is lever 8B
As a result, the state in which the protrusion 10B of the lever 8B is engaged with the through hole 21B of the operating lever 20B is temporarily maintained even if the push button 1B is released.

When the switch 33 is turned on, the plunger 36 is energized and the sliding plate 7 is pulled in the direction shown by the arrow 38.

At this time, all the selection levers 8A to 8E attached to the sliding plate 7 move in the same direction as shown in FIG.
Among these, the lever 8B for selecting normal feed in the forward direction is engaged with the operating lever 20B as described above, so the operating lever 20B for normal feeding in the forward direction is similarly moved in the direction of the arrow 38, as shown in FIG. Therefore, the magnetic recording/reproducing device is switched to a normal feeding operation state in the forward direction.

At this time, the engagement protrusion 30B of the lever 20B presses the tapered portion 26B of the locking protrusion 25B of the locking plate 24, so that the locking plate 24 moves in the direction of the arrow 41 against the spring 28. However, when the protrusion 30B comes off the tapered portion 26B, the biasing force of the spring 28 causes the protrusion 30B of the lever 20B to engage with the notch 27B of the locking protrusion 25B.

Therefore, the operating lever 20B is held in its operating position.

On the other hand, at this time, the protrusion 10B of the selection lever 8B falls into the recess 35B of the switch operation plate 31, so the pressing force on the operation plate 31 by the protrusion 10B is eliminated, and the lock plate 1
The end 42B of 4B opposite to the above-mentioned pawl 40B rides on the cam plate 39B, and the lock plate 14B rotates in the direction of arrow 43, whereby the pawl 40B and the protrusion 12 of the lever 8B
The engagement state with B is released, and the protrusion 10B of the lever 8B is pulled out from the through hole 21B of the lever 20B.

Therefore, the switch 33 is turned off, and the sliding plate 7 is moved by the spring 18.
The selection lever 8B, which is released from the locking state with the operating lever 20B by the biasing force of the selection lever 8B, and the other selection levers 8A, 8
These are the fifth
Return to the original position as shown.

In this case, since the operating lever 20B is still locked by the locking plate 24, the lever 20B remains in its operating position, and the normal feeding operation state in the forward direction is maintained.

That is, once the push button 1B is lightly pressed, the operating lever 20B will be reliably held at the operating position even if the user immediately releases the push button 1B, and thereafter assumes a normal feeding operation state in the forward direction.

In this case, when the operation is completed, the position of the protrusion 10B of the selection lever 8B shifts from the position of the through hole 21B of the operation lever 20B, as is clear from FIG. 5, so it is impossible to press the same push button 1B again in this state. , no malfunction will occur.

In this way, in order to change the state of normal feeding in the forward direction to the stopped state, lightly press the stop operation push button 1A.

When the push button 1A is pressed, the stop operation lever 20A moves to the sliding plate 7 and the selection levers 8A to 8 in exactly the same manner as described above.
E and move in the direction of arrow 38.

Then, when the protrusion 30A of the lever 20A pushes the tapered part 26A of the protruding piece 25A of the locking plate 24, the locking plate 24 moves in the direction of the arrow 41 against the spring 28, and the protrusion 30A
When the notch 27B of the projecting piece 26B and the protrusion 30B of the lever 20B have been engaged with each other until now, the state of engagement between the notch 27B of the protruding piece 26B and the protrusion 30B of the lever 20B is released.

However, since the protruding piece 25A does not have an engaging notch as described above, the operating lever 20A is not locked by the locking plate 24, and the switch 33 is turned off and the plunger 36 is biased as described above. When the state is released, the operating lever 20A returns to its original position, and the entire mechanism reaches the state described in FIG. 1, completing the stopping operation.

When selecting another operating state, it operates in exactly the same way as described above; in other words, in cases other than stop operation, the operating lever maintains the previous operating state by first using the operating lever for making a new action. After releasing the locked state, the newly selected operating lever is locked in its operating position.

As described above, according to the selection operation mechanism of the present invention, a desired operating state can be selected and maintained simply by lightly pressing the desired push button for only a moment.

Furthermore, the configuration is extremely simple, as many operations can be switched and selected by simply providing a switching means such as a microswitch and a driving means such as a plunger.

Note that the specific configuration of the engaging means formed on the selection lever and the operating lever, the means for locking the operating lever, the switching means, etc. is not limited to the example shown in the drawings, and can be modified in various ways.

Furthermore, instead of the plunger as the driving means, for example, a motor may be used to move the sliding plate.

Furthermore, the present invention can be widely applied not only to magnetic recording/reproducing devices but also as a selection operation mechanism for devices that take a plurality of operating states.

[Brief explanation of drawings]

The figures show an example of a case where the selection operation mechanism according to the present invention is used in a magnetic recording/reproducing device. Fig. 1 is a side view with a part cut away in a stopped state, and Fig. 2 shows a push button for normal feeding in the forward direction. Partially cross-sectional side view in a pressed state, 3rd
The figure is a partially cross-sectional surface view of the state immediately before the normal feed operation in the forward direction is completed, Figure 4 is a plan view in this state, and Figure 5 is the state in which the normal feed operation in the forward direction is completed. It is a side view with a part cut away.

Claims (1)

[Claims] 1 A plurality of operating push buttons, each of which is movably arranged in correspondence with the operating push button, is always biased in the backward movement direction by a first biasing means, and when the operating push button is operated, the first biasing button is a plurality of selection levers that move in the forward direction against a first urging means, a plurality of operators arranged corresponding to the plurality of selection levers, a driving means, and a second urging means. a slider common to the plurality of selection levers that is always biased in the backward direction by the means and moved in the forward direction by the drive means against the second biasing means; It has a common operating member that is moved by pressing a plurality of operating push buttons, and a common locking means that locks the plurality of operating elements in their operating positions, so that the desired operating push button can be pressed. When operated, the selection lever corresponding to this push button moves in the forward direction and connects with a predetermined operator, and the movement of the operating member activates the driving means, and the slider moves into the selection lever. The lever moves forward with the lever, and the operator corresponding to the operated push button is brought to a predetermined operating position, and this operator is locked in the operating position by the locking means to set a desired operating state. In this state, when the pressing operation force acting on the desired operating push button is released, the desired selection lever is moved to the first position while the locking means holds the predetermined operating element in the operating position. At the same time, the driving force of the driving means is released, and the slider is moved back by the second urging means, so that other operations than the desired operation push button can be performed. until the push button is operated.
A selection operation mechanism characterized in that the desired operating state is maintained.