JPS6161463B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an eject mechanism for a cassette-type tape player.Generally, a cassette-type tape player operates the eject mechanism while accumulating energy in a spring while a cassette is being inserted, until the cassette is completely inserted. When the cassette is used, the eject lever is operated to use the accumulated energy to return the eject mechanism to its original position and eject the cassette. There is. Alternatively, as another method, when inserting the cassette, the mechanism is released while releasing the energy accumulated during the previous eject operation, and the recording and playback state is activated.When the eject operation is performed, the energy is accumulated in the spring and The cassette was being ejected.

In either method, energy is released to operate either the cassette insertion force or the eject operation force, so a light force is required, but the other operation accumulates energy, so an excessive amount of force is required. It requires force and causes an imbalance in the pressing force during operation.
I felt uncomfortable when using it.

The purpose of the present invention is to correct such an imbalance in pressing force, and the present invention will be explained below based on examples. A pair of reel shafts (not shown) are provided, which serve as the main body of the tape player. B is a holding plate having a cassette holder C, one end of which is pivoted to side plates A' and A'' formed on both sides of the container frame A, B' and B'', respectively, so that it tilts as the cassette is inserted and removed. There is. Furthermore, the holding plate is provided with a locking pin 1 that projects outward from the right side plate. Reference numeral 2 denotes an arcuate long hole formed in the right side plate, through which the locking pin 1 faces. 3 is a spring whose one end is locked to the left side plate A'' and the other end is locked to the holding plate B. 4 and 5 are protruding shafts protruding from the right side plate, and the springs are inserted through long holes 6 and 7. The first sliding plate 8 is engaged with the second sliding plate 11 through elongated holes 9 and 10.The first sliding plate 8 has holes bored in the right side plate A'. A folded piece 12 is provided facing inward of the container frame A through the window hole A, and a groove 13 is formed in the folded piece. An inclined edge 14, a first regulating edge 15', and a horizontal portion 15'' are formed. First inclined edge 14 and horizontal part 1
5'' means that when the cassette holder C is tilted,
This constitutes a first relief portion of the locking pin 1 that moves accordingly. The second sliding plate 11 has an O-shaped long hole 16 through which the locking pin 1 passes, and a counterclockwise rotational force is applied by a spring 18 onto a folded piece 17 formed at the tip. A rotary hook 19 is rotatably provided. The rotary hook 19 has a hook 20 and a protrusion 2.
A pawl 22 is formed which engages the folding piece 1 and the folding piece 17 and serves to stop the rotary hook from rotating. The rotary hook 19 and folding piece 17 face the inside of the container frame A through the window hole A. Reference numeral 23 denotes a spring that is stretched between the first and second sliding plates so that the first and second sliding plates approach each other in the longitudinal direction. 27 is container frame A
A rotation auxiliary lever 24 and a rotation lever 25 are loosely fitted in order on a rotation lever shaft that projects upward.
The rotation auxiliary lever 24 is formed with a protruding shaft 28 that engages with the hook portion 20 of the rotary hook 19, a first bent piece 29, and a second bent piece 30, respectively. The rotating lever 25 is a two-stage lever, upper and lower, at the part that loosely fits into the rotating lever shaft 27, and the lower lever 25' has an engaging shaft 31 that engages with the groove 13, and a bent piece. 35 is a roller 3 on which a cassette (not shown) comes into contact with the upper lever 25''.
2 are provided respectively. 26 is a coil spring, which is interposed between the lower lever 25' and the upper lever 25'' and is loosely fitted to the rotating lever shaft 27, and has one end connected to the rotating lever 25 and the other end rotating. The rotational auxiliary lever 25 and the rotational auxiliary lever 2 are respectively engaged with the second bent pieces 30 of the rotational auxiliary lever.
4 is given a force to rotate each other,
The rotation auxiliary lever 24 comes into contact with the bending piece 35 and its rotation is restricted. Reference numeral 33 denotes a reversing spring whose one end engages with the engagement shaft 31 and the other end engages with a protrusion 34 projecting above the window hole A, thereby ensuring the movement of the first sliding plate 8.

In the above configuration, when a cassette (not shown) is inserted into the cassette holder C for the purpose of recording and playback and is pressed in the horizontal direction, the end of the cassette comes into contact with the roller 32 and the rotating lever 2
5 rotates clockwise (in FIG. 1) around the rotation lever shaft 27, and slides the first sliding plate 8 toward the front via the engagement shaft 31 and the groove 13. . Along with this, a traction force in the same direction acts on the second sliding plate 11 via the spring 23. On the other hand, as the rotation lever 25 rotates, the rotation auxiliary lever 24 is
The protruding shaft 28 is about to rotate in the same direction, and the second
In addition to the above-mentioned traction force, a sliding force in the forward direction is applied to the sliding plate 11 . However, in order for the second sliding plate 11 to slide, the locking pin 1 must be removed from the second inclined edge 16' of the O-shaped window hole 16; Since the movement of the sliding plate 8 in the direction of the recording/playback position is restricted by the first regulating edge 15', the inclined edge 16' comes into contact with the locking pin 1 and the second sliding plate 11 cannot slide, and only the first sliding plate 8 slides while pulling the spring 23. Accordingly, the rotation auxiliary lever 24 does not rotate, and only the rotation lever 25 rotates against the spring 26 and the reversing spring 33. Therefore, the inclined edge 16' serves as a sliding restriction portion that restricts the sliding movement of the second sliding plate 11. Also, at this point, the springs 23, 2
Energy is stored in 6 and the reversing spring 33
approaches the dead point.

Furthermore, as the rotating lever 25 continues to rotate due to the press insertion of the cassette, the first sliding plate 8
continues to slide toward the front, and the first inclined edge 14 comes to the position of the locking pin 1. Then, the downward restriction of the locking pin 1 is released, and the holding plate B is tilted by the spring 3 toward the recording/playback position. Along with this, the contact between the inclined edge 16' and the locking pin 1 is also released, and the springs 23, 26 that have been stored up until now are released.
The energy causes the second sliding plate 11 to start sliding toward the front while being pressed down by the second inclined edge 16' to help tilt the locking pin 1. Then, as the locking pin 1 descends, the holding plate B tilts toward the container frame A, approaching the recording or playback state. Therefore, the edges 16, 16〓 become the second escape portion of the locking pin 1. On the other hand, the second sliding plate 1
1, the rotating hook 19 pivotally mounted on the plate 11 also moves together in the same direction, causing the spring 26 to expand, thereby causing the rotation auxiliary lever 24 to move toward the protruding shaft 28. Hook 20
Start rotating clockwise while being pressed against. Therefore, the rotating hook 19 moves linearly, and the rotation auxiliary lever 24 moves rotationally. During this time, the reversing spring 33 exceeds the dead point, so that the first sliding plate 8 moves reliably and with moderation.

Then, the second sliding plate 11 slides on the protruding shafts 4 and 5.
And just before it is regulated by the elongated holes 9 and 10, the protruding piece 21 of the rotary hook 19 comes into contact with the first bent piece 29 of the rotation auxiliary lever 24, so that the rotary hook 19 moves linearly. This results in a rotational movement in a clockwise direction. As a result, the protruding shaft 28
, the hook 20 is disengaged, and the second sliding plate 1
1 slides until it is regulated by the protruding shafts 4, 5 and elongated holes 9, 10 by the action of the spring 23 and the reversing spring 33, and the rotation auxiliary lever 24 is moved by the rotation lever 25 by the spring 26. It is rotated until it comes into contact with the bent piece 35 of. Immediately after the second sliding plate 11 is restricted from sliding, the first sliding plate 8
The sliding movement of is regulated by the protruding shafts 4 and 5 and the elongated holes 6 and 7. Also, the locking pin 1 is held between the second regulating edge 16 of the O-shaped hole 16 and the horizontal portion 15'' and enters the recording or playback state.In this case, the locking pin 1 comes into contact with the horizontal portion 15''. Instead, it may be held by coming into contact with the end of the elongated hole 2.

Next, to explain the eject operation, when the second sliding plate 11 is pressed, the spring 23
Although the first sliding plate also tries to slide in the same direction via Therefore, the first sliding plate 8 does not slide, and only the second sliding plate 11 slides against the spring 23, and energy is stored in the spring 23.

Furthermore, when the second sliding plate 11 is pressed and the second inclined edge 16' comes to the position of the locking pin 1, the restriction is released and the first sliding plate is moved to the spring 23 and Since it is pulled by energy, the locking pin 1 is pushed up by the beveled edge 16' while being inserted between the beveled edges 14 and 16'. In this case, the locking pin 1 may be pushed up by the first inclined edge 14. At the same time, the rotation auxiliary lever 24, which is integrated with the rotation lever 25 via the engagement shaft 31, rotates counterclockwise. Therefore, after the cassette has been lifted to some extent, it begins to be ejected by the rotary lever 25. and the second
The sliding plate 11 is restricted from sliding by the protruding shafts 4, 5 and the elongated holes 9, 10, and at the same time the cassette is ejected. Further, the sliding movement of the first sliding plate 8 is also restricted by the protruding shafts 4 and 5 and the elongated holes 6 and 7. On the other hand, after the protruding shaft 28 on the rotation auxiliary lever 24, which rotates integrally with the rotation lever 25, contacts the outside of the hook 20 and is rotated clockwise against the spring 18, the rotation hook 19 rotates clockwise against the spring 18. The spring 18 returns the hook 20 to engage the protruding shaft 28. The locking pin 1 is then held between the first regulating edge 15', the horizontal portion 16'', and the second inclined edge 16', and is prepared for the next insertion of the cassette.

The operations of inserting and ejecting a cassette have been described above, and each mechanism operates almost instantaneously.

As described above, according to the present invention, when a cassette is inserted, the rotation lever 25 rotates clockwise due to the press insertion of the cassette, and the first sliding plate 8 slides forward in conjunction with the rotation operation in the clockwise direction. However, since the sliding movement of the second sliding plate 11 is restricted, energy is stored in the springs 23 and 26. Also, the reversing spring 23 approaches the dead point. After that, the second sliding plate 11
Since the restrictions on the springs 23,
The second sliding plate 11 slides due to the energy stored in the cassette holder C, lowering the cassette holder C to the play position and putting it in a recording/playback state. On the other hand, the reversing spring 33 helps the first sliding plate 8 slide toward the front and the pivot lever 25 pivot clockwise.

Therefore, when inserting the cassette, the spring 2
3, 26, which assists in lowering the cassette holder C to the playing position.

When the second sliding plate 11 is pressed when ejecting the cassette, the sliding of the first sliding plate 8 is initially restricted and only the second sliding plate 11 slides.
Energy is stored in the spring 23, and then the restriction on the first sliding plate 8 is released, so the first sliding plate 8 is moved by the energy and the cassette is ejected.

Therefore, all the force applied when inserting the cassette is used to set the cassette to the recording/playback state, and when ejecting the cassette, all the force applied to the operating member is used for the eject operation, so the cassette insertion force is reduced. The eject operation force and the eject operation force can be made lighter and almost uniform than in the past, and it is possible to eliminate the discomfort during use due to the imbalance in the operation force, where the pressing force increases in proportion to the pressing force as in the conventional case.

[Brief explanation of the drawing]

All the drawings show embodiments of the present invention; FIG. 1 is a plan view, FIG. 2 is a right side view of FIG. 1, FIG. 3 is a plan view of the cassette inserted state, and FIG. The right side view, FIG. 5, is a diagram of the main parts of the present invention. In the figure, A is the container frame, B is the holding plate, B' and B'' are the pivot parts, C is the cassette holder, 1 is the locking pin (protruding shaft), 3 is the spring, 4 and 5 are the protruding shafts, and 6 and 7 is a long hole, 8 is a first sliding plate, 9 and 10 are long holes, 11 is a second sliding plate, 14 is a first inclined edge,
15' is the first regulating edge (regulating part), 15" is the horizontal part (14 and 15" are the first escape parts), 16 is the O-shaped long hole, and 16' is the second inclined edge (sliding regulating part). part), 16
is the second regulating edge, 16〓 is the inclined part (16 and 16
〓 is the second relief part), 18 is a spring, 19 is a rotation hook, 23 is a spring, 24 is a rotation assist lever, 25 is a rotation lever, 26 is a spring,
33 is a reversing spring, and 34 is a protruding piece.

Claims (1)

[Claims] 1. A holding plate B, which is equipped with a cassette holder C and a protruding shaft 1, is pivoted to the device frame B', B'', and is biased in the direction of the recording/playback position by the first spring 3, and when the cassette is inserted, the sliding plate The first sliding plate 8 is made up of a second sliding plate 11 interlocked with the first sliding plate 8 via a second spring 23, and the first sliding plate 8 has the A regulating part 15' that is brought into contact with the protruding shaft 1 and regulates the movement of the holding plate B to the recording and playback position.
and a first relief part 14, 15'' which releases the restriction when the cassette slides due to insertion, and when the first sliding plate 8 slides on the second sliding plate 11. When the second sliding plate 11 is pulled via the second spring 23, it comes into contact with the protruding shaft 1 and the first
Sliding regulation part 1 that regulates the interlocking sliding movement with the sliding plate 8 of
6', and further sliding of the first sliding plate 8 releases the restriction on the movement of the holding plate B to the recording and playback position by the first relief parts 14, 15'', the protruding shaft 1
Second relief portions 16, 16 that allow movement of
A cassette-type tape player characterized in that it is formed with: and a sloped part 16 which pushes up the protruding shaft 1 to the position of the regulating part 15' by a sliding operation at the time of ejecting.