JPH0728596Y2 - On / off mechanism for drive switch of cassette half playback device - Google Patents

Description

Detailed Description of the Invention [Outline] The drive switch for driving the cassette half reproducing device is turned on or off in synchronization with the mounting or discharging operation of the cassette half at the reproduction position.
In the off mechanism, in order to reliably turn on the drive switch when the mounting of the cassette half is completed, it is close to the button of the drive switch in conjunction with the descending operation of the cassette half by the descending / ascending portion, and from the position close to the button. The drive switch is connected to a part of the on / off lever part and the on / off lever part that has a stroke to give the button a pressure that can be turned on, and the on / off lever part is set to the button based on that stroke. By providing an elastic member that presses against it and turns on the drive switch,
The drive switch can be reliably turned on when the mounting of the cassette half at the reproduction position is completed.

[Industrial application field]

The present invention relates to a cassette half reproducing apparatus, wherein a drive switch for driving the cassette half reproducing apparatus is turned on or off when the cassette half is attached to the reproducing position or ejected from the reproducing position. Regarding the mechanism.

Usually, in a cassette half reproducing device, for example, an in-vehicle cassette player, when a cassette half is mounted in a reproducing position, a drive switch (for example, a power switch for driving a motor) is operated in order to simplify an operation by an operator. By turning on and driving the reel, the pinch roller and the capstan, the reproduction of the in-vehicle cassette player is started, and when the cassette half is ejected from the reproduction position by the operation of the ejection lever by the operator, the drive switch is turned off. As a result, the reproduction of the in-vehicle cassette player is stopped. In this case, a mechanism for detecting the mounting or ejection of the cassette half at the reproduction position and reliably turning on / off the drive switch is required.

[Conventional technology]

The operation of the conventional drive switch on / off mechanism in the cassette half reproducing apparatus will be described with reference to FIG. FIGS. 9A and 9B show a cassette half (not shown) before mounting (that is, in a discharged state) and after mounting, respectively. When the cassette half (not shown) is inserted into the elevator holder 110 in the state of (a), the pawl (not shown) that locks the elevator holder 110 is released, and the slide lever 120 moves to the right by the reaction force of the spring 150. Slide in the direction. As a result, the pin 121 provided on the slide lever 120 is moved to the slit 11 provided on the elevator holder 110.
Since it is guided along 1, the elevator holder 110 descends while rotating clockwise around the rotation shaft 112 and sets the cassette half at the reproduction position. At the same time, the pin 122 provided on the slide lever 120 moves the drive switch lever 13
Since it is guided along the slit 131 provided in 0, the drive switch lever 130 rotates counterclockwise about the rotation shaft 132, and the drive switch 140 provided in the chassis 200 (for example, a power switch of a motor that drives a reel). ) Button. As a result, the drive switch 140 is turned on and the reproduction of the cassette half reproducing device is started. At this time, part of the slide lever 120 is in contact with part of the discharge lever 160.

Next, when the ejection lever 160 is pushed against the spring 161, a part of the ejection lever 160 presses a part of the slide lever 120 and the slide lever 120 slides to the left. Since the pin 122 is guided along the slit 131 of the drive switch lever 130, the drive switch lever 130 rotates right about the rotation shaft 132 and separates from the button of the drive switch 140. As a result, the drive switch 140 is turned off and the reproduction of the cassette half reproducing device is stopped. At the same time, the pin 121 of the slide lever 120 is aligned with the slit 111 of the elevator holder 110.
The elevator holder 110 ascends while rotating counterclockwise about the rotation shaft 112 to be guided along, and starts to eject the cassette half from the reproduction position. Furthermore, the elevator holder 110 that is rising is locked by the above-mentioned claws, and the ejection of the cassette half is completed.

[Problems to be solved by the device]

In the above-described drive switch on / off mechanism, the stroke for pressing the button of the drive switch 140 is determined by the length of the slit 131 provided on the drive switch lever 130 and the mounting position of the drive switch 140.
There is a problem in that the stroke for pushing the button of the drive switch 140 is shortened and the drive switch 140 cannot be reliably turned on depending on the variation in the length and the mounting position.

Further, even if the stroke is set in consideration of the variation in the length of the slit 131 and the mounting position, there is variation in the ON position of the drive switch 140 due to the pressing of the button. There is a problem that the stroke of the switch lever 130 becomes an overstroke to damage the drive switch 140, and on the other hand, the drive switch 140 does not turn on due to insufficient stroke.

The present invention has been made to solve the above problems, and in a cassette half reproducing apparatus, it is possible to reliably turn on / off the drive switch when the cassette half is completely attached to the reproducing position. It is an object to provide an on / off mechanism for a drive switch.

[Means for Solving the Problems]

FIG. 1 is a view showing the principle configuration of an on / off mechanism of a drive switch of a cassette half reproducing apparatus according to the present invention. In the figure, reference numeral 1 is a holding portion, which holds the cassette half 6. Reference numeral 2 denotes a descending / ascending portion, which lowers or raises the holding portion 1 in order to mount or eject the cassette half 6 at the reproducing position. Reference numeral 3 denotes an on / off lever portion, which is interlocked with the descending operation of the descending / ascending portion 6 and is close to the button 4a of the drive switch 4, and the drive switch 4 is moved from the adjacent position via the button 4a. A stroke for turning on is provided. This drive switch 4
Is turned on or off by pressing the button 4a or releasing the pressing, thereby driving or stopping the driving of the cassette half reproducing device. Reference numeral 5 denotes an elastic member, which is connected to a part of the on / off lever portion 3 and presses a button 4a based on a stroke provided in the on / off lever portion 3 to turn on the drive switch 4.

[Action]

According to the present invention, the elastic member 5 pushes the button 4a through the on / off lever portion 3 based on the stroke provided in the on / off lever portion 3 so as to be an overstroke with respect to the descending operation at the descending / ascending portion. By pressing, the drive switch 4 is turned on.

Specifically, when the cassette half 6 is inserted into the holding portion 2,
The descending / ascending unit 6 descends the holding unit 2 toward the reproduction position, and in conjunction with the descending operation of the descending / ascending unit 6, the on / off lever unit 3 causes the button 4a of the drive switch 4 to move.
Close to. At this time, the on / off lever portion 3 has a stroke for applying a pressing force capable of turning on the drive switch 4 to the button 4a from its close position. As a result, the elastic member 5 pulls the on / off lever portion 3 toward the button 4a based on the stroke thereof, so that the button 4a is pressed sufficiently to turn on the drive switch 4, so that the drive is performed. The switch 4 is turned on to drive the cassette half reproducing device.

As a result, the drive switch 4 for driving the cassette half reproducing device can be reliably turned on when the mounting of the cassette half 6 at the reproducing position is completed.

〔Example〕

FIG. 2 is a diagram for explaining the operation of one embodiment of the present invention,
An example of applying the drive switch on / off mechanism according to the present invention to an on-vehicle cassette player will be described. (A) of this figure
(B) and (c) show a state before insertion (that is, after ejection), a state during mounting, and a state in which mounting is completed, respectively. First, the configuration of this embodiment will be described below with reference to the diagram showing the state of FIG.

In the figure showing the state of (a), the holding part 1 comprises an elevator holder 10, and this elevator holder 10 has a rotating shaft 12
It is attached to the chassis 100 so as to be rotatable about the center of the cassette 100, and rotates in the up-down direction about the rotary shaft 12 while holding the cassette half 6. Further, the elevator holder 10 is provided with a slit 11 into which a pin 22 provided on a rotary lever 20 described later is fitted.

The descending / ascending section 2 has a rotary lever 20 and a slide lever 25.
The rotary lever 20 rotates in the vertical direction about the rotary shaft 21, so that the elevator holder 10 rotates in the vertical direction via the pin 22 of the rotary lever 20 to move the cassette half 6 to the reproduction position. Install or eject it. Also,
One end of a spring 24 is connected to the claw 20a provided on the rotating lever 20, and the other end of the spring 24 is connected to the chassis 100. The rotating lever 20 is centered on the rotating shaft 21 by the spring 24. It is biased in the left rotation direction. Further, the rotation lever 20 is rotated clockwise by pressing the slide lever 25. The slide lever 25 is provided with a protrusion 27.
Is connected to one end of a spring 28, and the other end of the spring 28 is connected to the chassis 100. The slide lever 25 is biased rightward by the spring 28. Further, the slide lever 25 is provided with pins 26a and 26b, and the pin 26a engages with the protrusion 20b of the rotary lever 20 so that the slide lever 25 stops sliding to the right due to the reaction force of the spring 28. There is. The pin 26b is fitted into a slit 31 provided on the power switch lever 30 described later to rotate the power switch lever 30.
Rotate around 33.

The on / off lever portion 3 comprises a power switch lever 30, and a push piece 32 is provided on the power switch lever 30. The push piece 32 pushes a button 41 of a power switch 40 described later. One end of a spring 50 as an elastic member 5 is connected to the pressing piece 32, and the other end of the spring 50 is connected to a fixed plate 105. The spring 50 attaches the pressing piece 32 to the right. Energize. Also, power switch lever
The slit 31 provided in 30 has a play portion 31a and a guide portion 31b, and when the guide portion 31b guides the pin 26b of the slide lever 25 to reach the play portion 31a, the pin 26b
b is released from being guided by the guide portion 31b. The fixed plate 105 is attached to the chassis 100.

The drive switch 4 comprises a power switch 40, and the power switch 40 is attached to the fixed plate 105. By pressing the button 41 of the power switch 40 to turn on the power switch 40, power is supplied to, for example, a motor (not shown) that drives a reel (not shown).

As another configuration, the discharge lever 101 is the lever 101.
The abutting portion 103 provided on the abutment portion abuts on the abutting portion 25a of the slide lever 25, and the slide lever 25 is slid to the left to raise the elevator holder 10 from the reproduction position via the rotary lever 20, The cassette half 6 is ejected.
It should be noted that one end of a spring 102 is connected to the claw 101a provided on the discharge lever 101, and the other end of the spring 102 is connected to the chassis 1.
00 and its spring 102 causes the ejection lever 101
Is biased to the right. Further, the claw 104 locks the elevator holder 10 when the discharge is completed.

The operation of this embodiment having the above configuration will be described with reference to FIG. First, the operation from the state before reproduction to the reproduction start state will be described. When the cassette half 6 is inserted into the elevator holder 10 in the state of (a) in this figure, the pawl 104 that has locked the elevator holder 10 is released, and the rotary lever 20 rotates the rotary shaft 21 due to the reaction force of the spring 24. Rotate counterclockwise around. With the rotation of the rotary lever 20, the pin 22 pushes the side wall of the slit 11 of the elevator holder 10, so that the elevator holder 10 starts to descend toward the reproduction position while rotating counterclockwise about the rotary shaft 12.
Furthermore, the rotary lever 20 rotates counterclockwise, and the slide lever 25
When the protrusion 26a is disengaged from the protrusion 20b of the rotary lever 20, the spring 28 causes the slide lever 25 to start sliding to the right. In conjunction with the slide of this slide lever 25, the pin
The 26b is guided along the guide portion 31b of the slit 31, whereby the power switch lever 30 starts to rotate right about the rotation shaft 33. Furthermore, the rotary lever 20 rotates counterclockwise,
When the elevator holder 10 reaches the playback position, the rotary lever
20 left rotation stops. At this time, since the pin 26b of the slide lever 25 reaches the backlash portion 31a of the slit 31,
The engagement between the pin 26b and the guide portion 31a of the slit 31 is released.
Therefore, due to the reaction force of the elastic spring 50, the power switch lever 30 rotates counterclockwise about the rotation shaft 33, so that the pressing piece 32
Pressing the button 41 of the power switch 40, and the pressing piece 32 hitting the power switch 40 causes the power switch lever 30
Counterclockwise rotation stops. At this time, since the pressing piece 32 holds the button 41 in a pressed state, the power switch 40 is turned on (state (c)). When the power switch 40 is turned on, a motor (not shown) is driven, which drives the cassette player.

Next, the operation from the regeneration state to the discharge completion state will be described. When the ejection lever 101 is continuously pressed in the state of (c), the contact portion 103 of the ejection lever 101 abuts against the abutment portion 25a of the slide lever 25 and further presses the slide lever 25 to the spring 28. Slide to the left against. At this time, the pin 26b moves from the backlash portion 31a of the slit 31 to the guide portion 31b and is guided along the guide portion 31b. As a result, the power switch lever 30 rotates counterclockwise about the rotation shaft 33, and the pressing piece 32 separates from the button 41, whereby the power switch 40 is turned off and the driving of the cassette player is stopped. Further, when the slide lever 25 slides to the left, the protrusion 29 moves to the protrusion 23 of the rotary lever 20.
By abutting against (the state of (b)) and pressing, the rotary lever 20 rotates right about the rotary shaft 21. By rotating the rotary lever 20 to the right, the elevator holder 10 is lifted from the reproduction position via the pin 22, and the pawl 104 locks the elevator holder 10 to complete the ejection of the cassette half 6 ((a ) State). At this time, when the pressure on the discharge lever 101 is released, the discharge lever 101 is returned to the original position by the reaction force of the spring 102.

[Effect of device]

As described above, according to the present invention, as the on / off means for turning on / off the drive switch for driving the reproducing apparatus for cassette halves, a stroke that causes an overstroke with respect to the descending operation in the descending / ascending portion. By providing an on / off lever portion that is provided with and an elastic member that presses the button of the drive switch via the on / off lever portion based on the overstroke, the drive switch is installed when the cassette half is completely attached to the playback position. Can be reliably turned on.

[Brief description of drawings]

FIG. 1 is a diagram showing the principle structure of an on / off mechanism of a drive switch of a cassette half reproducing apparatus according to the present invention, FIG. 2 is a diagram for explaining the operation of an embodiment of the present invention, and FIG. FIG. 6 is a diagram for explaining the operation of the on / off mechanism of the drive switch of FIG. 2 ... Down / up part, 3 ... On / off lever part, 4 ...
… Drive switch, 4a… Button, 5… Elastic member, 6…
… Cassette half.

Claims (1)

[Scope of utility model registration request] 1. A reproducing apparatus for a cassette half, which is driven by turning on a drive switch (4), wherein the cassette half (6) is mounted or ejected at a reproducing position. The button (4a) of the drive switch (4) is pushed or the button (4)
In a drive switch on / off mechanism having an on / off means for releasing the pressing of a) to turn on or off the drive switch (4), the on / off means is provided in the descending / ascending section (2). In conjunction with the descending movement of the button, the button (4a) is approached, and from its approaching position,
An on / off lever portion (3) provided with a stroke for applying a pressing force capable of turning on the drive switch (4) to the button (4a), and a part of the on / off lever portion (3). The drive switch (4) is connected to the drive switch (4) by pressing the on / off lever portion (3) against the button (4a) based on the stroke.
An on / off mechanism for a drive switch of a cassette half reproducing apparatus, which comprises an elastic member (5) for turning on.