JPS609964Y2 - cassette player - Google Patents

Description

[Detailed explanation of the invention] The invention is based on a sub-chassis that has a capsun, reel, etc. that can be moved within a certain distance with respect to a fixed chassis, so that it can be used to set an inserted cassette in a playing state or to eject it. This invention relates to a Stahl type cassette player which is designed to be able to perform auto-injection easily.

In other words, there are two ways to eject the tape when the end of the tape is detected: one is to electrically detect the tape end using a reed switch, etc., and then drive a solenoid to eject the tape, and the other is to use tape tension to eject the tape. There are methods to detect the end and eject.

However, the former method has the problem that a solenoid must be specially prepared, and the latter method has the disadvantage that malfunctions occur during fast forwarding and rewinding.

The present invention eliminates this drawback by providing a slip plate on the reel stand, detecting the rotating state of the reel stand through the slit plate with a detection arm, and ejecting the reel.

The present invention will be explained below with reference to an embodiment of the drawings.

Figure 1 shows the sub-chassis in the playing state with the cassette removed, and Figure 2 shows it in the non-playing state.
From FIG. 3 onwards, the necessary parts are shown in detail.

In the figure, 1 has tape guides 2.3 facing each other on both sides and supports a mounting plate 5 of a pinch roller 4, while a reel stand 7.8 provided on a sub-chassis 6, a capstan 9,
A fixed chassis 19 is located on the fixed chassis 1 and has holes 12 to 16 and 17 through which the cassette support pieces 10 and 11 and the motor 18 protrude from the surface, respectively, and the pins 20 to 2
2 restricts the movement direction, while the head 25 is mounted on the fixed chassis 1 by a plate, which is constantly applied with a tensile force in the direction of the reel base hole 12, 13 by a spring 24 applied between the pin 23 and the head 25. Although not shown, the tension of the spring 24 applies pressure to the pinch roller 4 in the direction of the capstan 9 only in the case of FIG.

26 is a lever for ejecting, fast forwarding, and rewinding; when this lever 26 is rotated in the direction of arrow A, fast forwarding and rewinding can be applied, and when pushed in the direction of arrow B, ejecting can be applied. , the pin 27 provided on the same lever 26 corresponds to the hole 28 provided on the mounting plate 19, and the lever 2
6, the mounting plate 19 is moved against the spring 24.

29 is a stopper shaft provided on the sub-chassis 6; 30 is a stopper that is rotatably supported by the pin 23 and has a stopper piece 31 and reset pieces 32 and 33;
A spring 34 applied between the pin 27 and the reset piece 32 is pressurized so that the reset piece 32 is always connected to the pin 27.

In the configuration explanation so far, in the playing state shown in FIG. 1, the stopper shaft 29 is engaged with the stopper piece 31 of the stopper 30, the sub-chassis 6 is locked in the state shown in FIG. Reel stand 7 from 12-17
, 8, the capstan 9, the cassette support pieces 10, 11, and the motor 18 are in a state of protruding above the fixed chassis 1 (playing state).

When the lever 26 is pushed in the direction of arrow B, the pin 27 moves the mounting plate 19 against the biasing force of the spring 24, while the reset piece 32 moves the mounting plate 19 to the stopper 30.
is rotated against the biasing force of the spring 34, thereby disengaging the stopper shaft 29 and the stopper piece 31, and at that stage the subchassis 6 and the parts attached thereto are rotated as shown in FIG. Move like.

When the lever 26 is released from the pressure in the direction of arrow B, the mounting plate 1
Due to the urging force of the spring 24 provided at the mounting plate 19, the second
Move as shown.

The above points are no different from those of the manual eject type, but the features will be explained below.

First, the reel stand 8 is a normal one and the other reel stand 7 is
However, as is clear from FIG. 7, a slip plate 76 having protrusions 74 and 75 is provided on the reel base plate 71 via a second slip 72 made of the same material as the first slip 73. ing.

35 has a portion 351 in contact with the protruding piece 74, 75 at one end,
352, and is rotatably supported by the sub-chassis 6 by a pin 36.

37 is a capstan shaft, 38 is a flywheel, 39 is a roller supported by the sub-chassis 6 and rotates by receiving driving force from the capstan shaft 37, 40 is an idler, and 41 is a pin 42 corresponding to the reset piece 33. and fixed chassis 1
The hook is provided with a long hole 43 corresponding to a pin 49 provided on the lower surface of the hook, and further has a hole 44 having a retaining portion 45.

A hook roller 46 is rotatably supported by a pin 47 provided on the lower surface of the fixed chassis 1. During performance, the hook roller 46 is placed in contact with a roller 39 provided on the sub-chassis 6, and receives a driving force from the reroller 39 to rotate.

In this case, the hook roller 46 has a cam 48 sized to be inserted into the hole 44 of the hook 41.

Next, the operation based on this configuration will be explained.

First, as shown in Figure 2, in the non-performance state, the sub-chassis 6
is separated from the fixed chassis 1 by a certain distance, and the roller 39 and the hook roller 46 are separated from each other.

At this point, in order to set it to a playing state, insert a cassette (not shown) along the guides 2 and 3 of the fixed chassis 1,
When the sub-chassis 6 is set as shown in FIG. 1, the roller 39 and the hook roller 46 come into contact as shown in FIG. 3, and the rotation of the capstan shaft 37 is transmitted to the hook roller 46.

Also, at this time, one end of the detection arm 35 comes into contact with a part of the hook 41 as shown in FIG.

At this time, when the capstan shaft 37 and the ply wheel 38 rotate as indicated by arrow a, the idler 40, reel stand 8, roller 39, and hook roller 46 rotate as indicated by arrows be, respectively.

With this rotation, the cam 48 provided on the hook roller 46
rotates at the same time, and the cam 48 engages with the engaging portion 45 provided on the hook 41. However, the protrusion 7 of the slip plate 76
4 to rotate the detection arm 35 in the direction g, and thereby rotate the hook 41 in the direction indicated by the arrow f, the cam 48 and the engaging portion 45 do not engage with each other as shown in FIG. Rotates only.

The cam 48 and the reel stand 8 further rotate in the directions of arrows e and c, but only the slip plate 76 rotates in the opposite direction (arrow c) with the cam 48 not engaging the engaging portion 45.
c) As a result, the hook 41 and the detection arm 35 rotate as shown by the arrows ff9gg and return to the state shown in FIG. 3. ... is repeated, and the cam 48 does not engage with the engaging portion 45.

In this state, the pin 42 moves while contacting the reset piece 33, but is prevented from operating the stopper 30.

When the reel wound on one side in the cassette reaches its end and the rotation of the reel base 8 (reel base plate 71) stops, the rotation of the slip plate 76 and the detection arm 35 ceases.

As a result, the hook roller 41 cannot be rotated from the state shown in FIG. 3 to the state shown in FIG.
8 engages with the engaging portion 45 to move the hook 41 to the hook roller 4.
6 in the direction in which the reel base plate 71 is located.

Accordingly, the engagement between the stopper piece 31 and the stopper shaft 29 is released in order to rotate the stopper 30 counterclockwise through the reset piece 33 using the pin 42 provided on the hook 41.

In other words, the same ejection as when the lever 26 is pressed is applied.

As described above with reference to the embodiments, according to the cassette player of the present invention, the ejection can be applied using the reel stand, so that the disadvantages caused by tape tension can be overcome.

In other words, it is possible to prevent erroneous operations during fast forwarding and rewinding.

Further, for automatic ejection, the power of the motor that drives the capstan 9, reel stand 8, etc. is used, so an ejecting solenoid or the like is not required.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a playing state of the cassette player, which is an example of the visitor's embodiment, Fig. 2 is a perspective view showing the cassette player in a non-playing state, and Figs. 3, 6, and 7 are one of them. 4 and 5 are operational diagrams of the components shown in FIG. 3. 1...Fixed chassis, 6...Sub chassis, 7, Reel stand, 9...Capstan, 30...Stopper 35・・・・・・
...Detection arm, 41...Hook, 44...
...hole, 45...engaging part, 48...
Cam, 72...Slip, 74.75...
...Protrusion, 76...Slip plate.

Claims (1)

[Scope of utility model registration request] a sub-chassis that is movable relative to the fixed chassis; a stopper mechanism that holds the sub-chassis close to the fixed chassis; a reel stand that is rotatably supported by the sub-chassis; a detection arm rotatably supported by the sub-chassis and in contact with the protrusion;
a rotational drive mechanism provided on the subchassis to rotationally drive the reel stand; a roller rotatably supported by the subchassis and rotationally driven by the rotational drive mechanism;
A hook roller rotatably supported by the fixed chassis and rotatable by the roller, a cam integrally provided with the hook roller, and an engagement in which the cam engages with the inner wall of a hole into which the cam is inserted. and a long hole into which a pin provided on the fixed chassis is inserted, and a hook rotatably and slidably supported on the fixed chassis, and when playing, the detecting arm is The hook is swung by the rotation and driven by the cam, and the cam and the engaging part are not engaged, and the hook is caused by the engagement of the cam with the engaging part when the reel stand is stopped. A cassette player characterized in that the stopper mechanism is released by movement.