JPS6040100B2 - cassette tape player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette tape player, and is intended to control ejection, fast forward/rewind control, and cancellation of fast forward/rewind states using a single eject shaft.

For example, in Japanese Patent Publication No. 50-40523, a single lever can be used for ejecting, fast forwarding, and rewinding, but when fast forwarding and rewinding, the lever must be rotated horizontally to the left and right, and the distance the lever can move is The only drawback is that other parts cannot be placed close together.

The present invention uses a shaft that is movable in one direction and rotatable for ejecting, fast-forwarding, and rewinding, and by pushing a knob attached to the shaft, the shaft can be ejected and rotated to the right or left. Fast forward,
This allows rewinding.

The embodiments shown in the drawings will be explained below.

FIGS. 1 to 6 show the front, top, right side, left side, back surface, and rear surface of the player as a whole. Here, 1 is a guide holder with the tape guide 3 of the cassette 2 attached on both sides, 4 is a cassette holder that holds the protrusion 5 of the tape guide 3 at its tip and has a protrusion 6, and 7
8 is a holding plate that holds one side of the cassette holder 4; 8 is an auxiliary plate rotatably attached to the holding plate 7 at one end and the guide holder 1 at the other end; 9 is a main chassis; 1 is a main chassis 9; It is a side plate attached to one side and has protrusions 13 and 14 for holding the timing stopper 11 and the sliding plate stopper 12, and elongated holes 16 to 18 on the front (outside) side.

Reference numeral 19 denotes the closest hole 2 which is movable horizontally with respect to the main chassis 9 and corresponds to the protrusion 21 provided on the charge 27.
0 and a protrusion 22 protruding from the elongated hole 16, and is pulled forward by a sliding spring 23.

Reference numeral 24 is a hop-up spring 25 located below the horizontal movement plate 19.
Accordingly, the sliding plate 19 is similarly movable in the horizontal direction with respect to the main chassis 9 by means of a guide shaft 41, which is a second sliding plate that is similarly pulled forward and corresponds to the closest hole 17.

One end of the charge plate 27 is rotatably held on the inside of the guide holder 1 and the holding plate 7 with respect to the holding plate 7, and the other end is rotatable inside the side plate 10.

28 is an eject plate whose base is rotatably held by the main chassis 9, and an eject spring 29 is placed between it and the sliding plate 19.
On the other hand, an engaging portion 32 and a lock release piece 33 corresponding to the stopper piece 31 of the stopper 30 are provided.

Numeral 34 is a shimashiki plate stopper spring that presses the sliding plate stopper 12 clockwise. Numeral 35 is rotatably held by the sliding plate 19, and is pressurized clockwise by a hook spring 36 applied to the same plate 19. Projection 37 provided on sliding plate 24
A hook plate 40 has an engaging part 38 that engages with the second sliding plate 24 and a protrusion 39 that corresponds to the release piece 33.
This is a cassette holder spring whose other end is hung on the cassette holder 4. FIG. 7 shows the components on the side plate 10 side.

8 to 10 show the process of inserting the cassette 2 from the state shown in FIG. 4 and setting the cassette 2 to a playing state. Next, the operation based on this configuration will be explained. First, when the cassette 2 is inserted along the tape guide 3 from the state shown in FIG. 4, the sliding plate 19 is moved through the charge plate 27 in the process shown in FIGS. 8 and 9.

A protrusion 22 provided on the sliding plate 19 during the movement process of the sliding plate 19
corresponds to the stopper 12 as shown in FIG.
2 to engage as shown in FIG.

Incidentally, reference numeral 41 is a guide ratchet provided on the second sliding plate to restrict movement of the stopper 12. Further, a hook plate 35 provided on the sliding plate 19 is pressurized so as to engage with the second sliding plate 24, and is engaged when the sliding plate 19 moves to a certain point from the state shown in FIG. The portion 38 also engages with the protrusion 37;
For further movement of the sliding plate 19, the second sliding plate 24
will also be followed. As a result, the second sliding plate 24
8 and 9, the guide shaft 41 also moves within the innermost hole 17.
During the movement as shown in the figure, the stopper 12 rotates as shown in FIG. 9 and releases its engagement with the protrusion 22.

Therefore, since the protrusion 22 engages with the stopper 12, the cassette 2 is locked in the state shown in FIG.

At this time, in order to hold the stopper 12 on the side plate 101, the elongated hole 121 is formed as shown in FIG. 22 is moved by a certain amount in the insertion direction of the cassette 2.

As the sliding plate 19 moves, the stopper 12 also moves.
1 in the direction of arrow 42.

(The stopper 11 is pressurized by a spring 43 in the direction opposite to the arrow 42.) As a result, the protrusion 44 provided at one end of the cassette holder 4, which had been engaged with the groove 111 of the timing stopper 11, is engaged. To achieve this, the cassette holder 4 is rotated as shown in FIG. 10, and the cassette 2 is vertically moved to correspond to the drive system on the main chassis 9. In other words, the cassette locking means represented by the stopper 12, which uses part of the force of the cassette 2 to return after it has been inserted a certain distance in the horizontal direction and is no longer inserted, also corresponds to the cassette vertical movement means. By hitting the timing stopper 11, the cassette holder 4 is unlocked and rotated so that the cassette 2 can be set. Therefore, there is no possibility of fingers being caught during the process of inserting or inserting the cassette 2, and when the fingers are removed from the cassette 2, the cassette 2 moves in the vertical direction, so there is no need to consider the pressure exerted by the fingers.

In ejecting, the stopper 30 is rotated to disengage the eject plate 28, and the plate 28 is rotated toward the back of the player by the action of the eject spring 29.

Accordingly, the second sliding plate 24 is unlocked by the release piece 33 of the same plate 28 to rotate the hook plate 35, and the second sliding plate 24 is restored.

When the sliding plate 24 is restored, the sliding plate stopper 12 is rotated by the guide shaft 41 so as to disengage the protrusion 22, so that the state shown in FIG. 10 returns to the state shown in FIG. 4. Furthermore, since the charge plate 27 also returns, the cassette 2 will fly out from the tape guide 3 due to the return force at that time. The above has explained the relationship between setting and ejecting the cassette at the playing position, but with reference to Figs. 11 and 12, the timing of setting the cassette at the playing position and the head
The relationship between the pinch rollers will be explained.

51 is movably supported with respect to the main chassis 9,
It is a cassette detection piece that is pulled forward by a spring and has a joint surface 52 to the charging plate 27 and a stopper part 53.

Reference numeral 54 denotes a head mounting plate which is movable in the same direction as the cassette detection piece 51 with respect to the main chassis 9, and holds the head 55 via an angle adjustment spring 56, while a lever 57 is engaged during fast forwarding and rewinding. 58, and a recessed groove 59 for the pinter roller mounting shaft 60 provided in the main chassis 9.

61 is a pinter roller 62 provided on the head mounting plate 54
64 is a locking spring 6 on the rear surface of the main chassis 9.
5, a cassette movement detection piece 67 has an engaging part 66 that engages with the stopper part 53 of the cassette detection piece 51, protrudes from the hole 69 of the main chassis 9, and is attached to a hole (not shown) of the head mounting plate 54. ) is a hole through which the cassette movement detection piece 67 of the head mounting plate stopper 64, which has a stopper piece 68 that engages with the head mounting plate stopper 64, projects upward.

With this configuration, when the cassette 2 is in the state shown in FIG. 4 (that is, when the cassette 2 is not set in the playing state as shown in FIG. A cassette movement detection piece 67 and a stopper piece 68 are made to protrude upward.

As a result, the engaging portion 66 engages with the cassette detection piece 51 that is pulled forward by the spring as shown in FIG.
The cassette movement detection piece 67 does not move unnecessarily below the main chassis 9. In this state, the stopper piece 68 of the head mounting stopper 64 is attached to the head mounting plate 54.
By engaging with a hole (not shown) provided in the head mounting plate 54, the head mounting plate 54 will not move unnecessarily toward the front. When the cassette 2 is inserted, the charging plate 27 also moves, so that the cassette detection piece 51 is moved in the direction of the arrow in FIG. 11 by the charging plate 27.

Accordingly, the engagement between 66 and 53 is released. When the cassette 2 is inserted and locked to the state shown in Fig. 9, and then moved as shown in Fig. 10 by the method explained earlier,
By pressing the unlocked cassette movement detection piece 67 of the cassette 2 in the direction of the main chassis 9, the stopper piece 68 will also move in the direction of the main chassis 9, and the head mounting plate 54 will be moved. The lock is released, so that the mounting plate 54 moves toward the cassette 2 set in the playing state, and becomes in the playing state.

In this case, the spring 63 functions as a spring for moving the head mounting plate 54 and as a force for pressing the pinter loaf 62 in the playback state. In the playback state, use the lever 57 to close the head mounting plate 54.
When pressed in the direction of the arrow, the pin roller 62 is released from the capstan 71, and fast forwarding and rewinding are performed.

On the other hand, during ejection in the playback state, the head mounting plate 54 is forcibly restored via the holding shaft 61 as the eject plate 28 moves when it is disengaged from the stopper piece 31.

This allows the cassette 2 to move from the state shown in FIG. 10 to the state shown in FIG. As a result, the head mounting plate 54 is locked. Next, the relationship between eject, fast forward, and rewind will be explained with the help of FIGS. 13 to 21.

First, Fig. 13 shows a state in which the cassette holder 4 and guide holder 1 in Fig. 2 have been removed, and Fig. 14 shows a state in which the fast forward and rewind mechanisms have been removed in Fig. 6. The following description will be made based on the main part diagram of FIG. 21. (Here, the symbols common to FIGS. 1 to 12 are used as they are, and new symbols are not assigned to FIGS. 1 to 12 in the explanation of FIGS. 13 to 21.

) 81 is an ejector shaft rotatably and movably supported by the main chassis 9, 82 is a spring that urges the ejector shaft 81 in the direction of the arrow (FIG. 13), and 83 is a hole into which the ejector shaft 81 is inserted. However, there are protrusions 85 and 86 on the outer periphery.
is formed, and a stopper piece 87 is formed on the end face. The cam d84 rotated by the shaft 81 is an arcuate fast forward/rewind cam, and this cam 84 is fixed to one end of the lever 57 rotatably supported by the main chassis 9.

When the fast-forward/rewind switching lever 83 rotates, the protrusion 85 or 86 moves onto the end surface 841 or 842 of the cam 84.
, the cam 84 is driven in a direction away from the eject shaft 81, and the lever 57 is rotated. When the lever 57 rotates, the head mounting plate retreats. 88 is a transmission lever rotatably supported on the main chassis 9 by a shaft 881, and one end of this transmission lever 88 is connected to the eject shaft 8.
It is located on one end side of 1.

89 is a spring, and this spring 89 causes the transmission lever 88 to
is biased clockwise (Fig. 13), and the tip of the transmission lever 88 is pressed against the stopper piece 8 as shown in Figs. 17 and 18.
7 or the end surface of the eject shaft 81.

That is, FIG. 17 shows a regenerating state, in which the tip of the transmission lever 88 is in contact with the end surface of the stopper piece 87. When the eject shaft 81 is rotated in the playback state shown in FIG.
As a result of the rotation, the tip of the transmission lever 88 comes off the end surface of the stopper piece 87 and comes into contact with the end surface of the eject shaft 81 as shown in FIG. In addition, in the fast forward/rewind state shown in FIG. 18, the side surface of the stopper piece 87 comes into contact with the tip of the transmission lever 88, so that the counterclockwise rotation of the fast forward/rewind switching lever 83 is restricted. . 18th
In the fast forward/rewind state shown in the figure, when the eject shaft 81 is pushed, the transmission lever 88 is pushed, and the tip of the transmission lever 88 disengages from the side surface of the stopper piece 87.
The fast-forward/rewind switching lever 83 is pressed by the cam 84 and rotates clockwise to release the fast-forward/rewind state and return to the playback state shown in FIG. 17. A control lever 90 has one end connected to the end of the transmission lever 88, and this control lever 901 has a drive protrusion 911 and a cam hole 92 formed therein.

In the reproducing state shown in FIG. 17, when the eject shaft 81 is pushed, the transmission lever 88 rotates, the control lever 90 moves, and the drive projection 911 pushes the stopper 30. As a result, the stopper rotates three degrees, and the cassette locking mechanism locked by the stopper 30 is released. 93
is a spring supported by the transmission lever 88, and this spring 9
3, the control lever 90 is biased counterclockwise (FIG. 13).

94 is a flywheel, 95 is an idler, and 961 is a hydraulic switching plate, and the hole 9 of this hydraulic switching plate 961 is
A pin fixed to the main chassis 9 is inserted into 71.

96 is a cam formed on the body of the idler 95; 99 is a table feed/rewind release plate rotatably supported by the main chassis 9; this release plate 99 is moved counterclockwise (13th Figure) is energized.

The release plate 99 is formed with a protrusion 991, an engagement piece 992 that engages with the hole of the lever 57, and a contact portion 993 that restricts rotation of the transmission lever 88. When the eject shaft 81 is rotated in the playback state shown in FIG. 14, it becomes a fast forward/rewind state, but as described above, the rotation of the eject shaft 81 causes the lever 57 to rotate in the direction of the arrow. With this movement, the release plate 99 also rotates in the direction of the arrow, and the protrusion 991 is positioned on the axis of the force shaft 81 . 1st
In the playback state shown in FIG. 4, the eject shaft 81 is movable until the end of the transmission lever 88 touches the contact portion 993 of the release plate 99, but in the fast forward/rewind state,
Since the release plate 99 rotates in the direction of the arrow (FIG. 14), the end of the transmission lever 88 of the eject shaft 81 is connected to the protrusion 99.
You can only move until you reach 1. Here, the drive shaft 91
As shown in FIG. 15, the shaft rotation detecting piece 102 has a shaft rotation detecting piece 102 to which rotational force is applied in one direction by a spring 101 during rotation, and when the coaxial shaft 91 rotates, the rut rotation detecting piece 102 moves the control lever 90 in the direction of overcoming the spring 93. There is a relationship to pressurize.

That is, if the detection piece 102 presses the control lever 90 in the direction of the spring 93 and the rotation of the drive shaft 91 stops, the lever 90 will move toward the drive shaft 91 due to the action of the spring 93 since there is no pressure applied by the rat rotation detection piece 102. Pressure is applied in the direction of . Furthermore, when the cassette 2 is in the state shown in FIG. 4 or FIG. 10, one end of the transmission lever 88 corresponds as shown in FIG.
rotates about the shaft 881 as a fulcrum, and a lever 90 connected to the lever 88 can be used to eject the stopper 30 to rotate it. Meanwhile, play (play)
When the eject shaft 81 is rotated, one side of the stopper piece 87 hits a transmission lever 88 as shown in FIG. Nigashi,
It enters fast forward and rewind mode.

At this time, to cancel fast forwarding or rewinding, the eject shaft 81 must be pushed; however, if the eject shaft 81 is pushed too much, the eject will continue, so to prevent this, the lever 5 is pressed as the eject shaft 81 rotates.
7 in the direction of the arrow shown in FIG. 14, the fast forward/rewind release plate 99 can be rotated in the direction shown by the arrow in FIG.

As the fast-forward/rewind release plate 99 rotates, the protrusion 9 of the release plate 99 aligns with the eject shaft 81 and the lever 88.
91 , the amount of movement of the eject shaft 81 due to pressing is controlled by this protrusion 991 .

Therefore, during fast forwarding or rewinding, the eject shaft 81
When the button is pressed, the release plate 99 is used to only cancel fast forwarding and rewinding.

(To explain this point a little bit, by pushing the eject shaft 81, the locks 88 and 87 as shown in FIG. while rotating in the direction of the 17th
Recover as shown in the diagram. ) In order to restore the release plate 97 when the ejection shaft 81 is restored, the fast forward/rewind release plate 99 is rotated in the opposite direction of the arrow by using the spring 98 at the abutting portion 972 and the end of the transmission lever 88 is rotated to 991. Instead, it corresponds to 993.

Next, the relationship between the lever 88 and the cam 96 will be explained.
First, when the reel drive shaft 91 is rotating during play, the shaft rotation detection piece 102 overcomes the pressure of the spring 93 and moves the lever 88 to the clock (head 5).
Pressure is applied in the direction of 5). At this time, as the idler 95 rotates, the cam 96 also rotates within the cam hole 92.

(In this case, the relationship between the cam 96 and the cam hole 92 is
0 moves alternately in the clockwise and counterclockwise directions, but the cam hole 92
It is in a relationship that it does not engage with the cam portion 921 of. ) FIG. 19A shows a state in which the shaft rotation detection piece 102 is also pressurized in one direction, and FIG.
Now, the rotation of the reel drive shaft 91 is stopped by the sea bream rotation detection piece 1
Since the pressure applied to the lever 90 by the lever 90 is also released, the lever 9 is pressed in the opposite direction by the action of the spring 93, and when the cam 96 rotates within the cam hole 92, the cam portion 9
21, and by the rotational force of the cam 96, the lever 9
0 in the direction of the eject axis 81.

In other words, the lever 90 performs the same action as when the eject shaft 81 is pushed, and rotation commands can be given to the three stoppers, allowing auto-eject. Figure 20A shows the lever 9 when the reel drive shaft 91 does not rotate.
The relationship with 0 indicates a state where the cam 96 is about to engage the cam portion 921. Next, if the eject shaft 81 is rotated to the right or left during play, the first
8 To lock lever 88 as shown in Figure 8, press lever 9.
0 is also pushed in the direction of the stopper 30 by the same lever 88.

On the other hand, as the stopper shaft 81 rotates, the idler 95 moves in a direction separated from the reel drive shaft 91, although the details are lacking, and as explained earlier, even if it moves in that direction, it still rotates. When the reel drive shaft 91 is being rotated by the driving force from another drive system, the cam 96 rotates within the reel hole 92 as shown in FIG.

When the reel drive shaft 91 stops rotating, the cam 96 engages the cam portion 921 and moves the lever 90 in the direction of the stopper shaft 81.

In accordance with this, the lever 88 rotates about the shaft 881, and the lock with the lever 87 is released, resulting in the state shown in FIG. 17. In other words, it has the same effect as pressing the stopper shaft 81. If the state shown in FIG. 18 is now in fast forward mode, even if the state shown in FIG. 19 is returned to, if the reel drive shaft 91 is not rotating, the cam 96 will engage with the cam portion 921 again and cause an error. Become.

On the other hand, if the state shown in FIG. 18 is rewinding, when the state returns to the state shown in FIG. 19, it will be in a play state, and play will continue from the tape winding table. In the above embodiment, in the manual operation, ejecting is performed by pushing the eject shaft 81, fast forwarding and rewinding are performed by rotating the eject shaft 81, and recovery can be performed by pressing the eject shaft 81. Lever 88
Due to the relationship between the support part of the lever 88 and the taper of the stopper 87, when the eject shaft 81 is rotated in the direction opposite to the rotation during fast forwarding and rewinding, the tip of the lever 88 slides along the taper of the stopper 87. The eject shaft 81 and the parts attached thereto can be protected by allowing some degree of freedom so that the eject shaft 81 can be unlocked.

As described above, according to the present invention, ejecting, fast forwarding/rewinding, and fast forwarding/rewinding can be performed by operating one eject shaft.
In addition to being able to release the rewinding state, the fast forward/rewinding state and ejecting can be performed separately by pressing the eject shaft.

[Brief explanation of drawings]

Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a top view, Fig. 3 is a right side view, Fig. 4 is a left side view, Fig. 5 is a rear view, and Fig. 6 is a rear view. , Figure 7 is a diagram of some of the components,
FIGS. 8 to 10 show some operations, and FIGS. 11 to 21 show some details. Figure 1 Figure 3 Figure 2 Figure 4 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 15 Figure 17 Figure 18 Figure 14 Figure 16 Figure 20 Figure 21 Figure 19

Claims (1)

[Claims] 1. An eject shaft that is rotatably and slidably supported, a fast-forward/rewind switching lever that rotates in response to the rotation of the eject shaft, and a fast-forward/rewind switching lever that rotates in response to the rotation of the fast-forward/rewind switching lever. a lever that is rotated to control the fast-forward/rewind mechanism; a stopper piece formed on the end face of the fast-forward/rewind switching lever; and a stopper piece that is rotatably supported and one end of which is connected to the end face of the stopper piece or the ejector piece. A lever for controlling the fast-forwarding/rewinding mechanism, which has a transmission lever that comes into contact with the end surface of the shaft, a cassette lock mechanism that is unlocked by the transmission lever, and a protrusion that can come into contact with one end of the transmission lever. and a rotatable fast-forward/rewind release plate connected to the eject shaft, and the protrusion of the fast-forward/rewind release plate regulates the amount of movement of the eject shaft in the fast-forward/rewind state. A cassette type tape player characterized in that the amount of movement of the eject shaft is not restricted by the protrusion of the fast forward/rewind release plate.