JPS6025813B2 - Cassette loading device in cassette tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette loading device for a cassette tape recorder, and more particularly to a cassette loading device suitable for a small cassette tape recorder combined with a car radio.

When a cassette tape recorder is installed in a car, it is required that the cassette tape recorder be small in size and easy to operate, so that it can be operated with one hand while driving.

Therefore, it is necessary to be able to easily load the cassette. In accordance with such a need, one object of the present invention is to provide a device that can load a cassette by simply pushing it into an opening.

The device according to the present invention rotates the lever mechanism by pushing in the cassette, tensioning the spring at the same time, and when the cassette is pushed in a certain distance, the lock is released and the cassette is moved in a direction perpendicular to the pushing direction, thereby locking the cassette to the reel shaft. It is characterized in that it is configured so that the head stand with the head etc. attached is moved forward and brought into contact with the tape.

First, the cassette insertion and fall mechanism will be described with reference to the drawings. As shown in FIGS. 1 and 2, a first lever 6 is pivotally connected to a shaft 4 fixed to the machine frame 2, and is biased by a spring 8 to rotate counterclockwise. It is in contact with the tip of a sliding frame 13 that is attached to the cassette holding guide frame 12 so as to be able to move. A connecting lever 14 is attached to an intermediate position of the first lever 6 by a pin 16, and a hook 18 at the tip of the lever is attached to a pin 2 of the first lever 20.
I have two grandchildren. The first sliding plate is guided by three pins 24 protruding from its side surface that engage with the outermost holes 26 provided in the machine frame, and is pushed to the left by a spring 28. Each pin 24 is pressed against the end of the elongated hole 26 and stopped. A second sliding plate 30 is provided adjacent to the first sliding plate, and a pin 32 protruding from the second sliding plate 30 is movably engaged with an elongated hole 34 of the machine frame, and is biased to move to the left by a spring 40'. A bent portion 38 is formed at the bent portion 36 of the first sliding board. When the second sliding plate 3 approaches, the cassette guide frame vertical movement lever 42 is pivoted to the machine frame by a pin 44, and a spring 46 is attached to one end 42a of the lever and the protruding piece 30a of the second sliding plate 30. The side surface 42b is in contact with the bent portion 48 of the second driving plate 30.

There is a hole 50 at the other end of the lever 42, into which a pin 52 protruding from the cassette guide frame 12 is engaged.
is engaged with the holding step 56 of the holding lever 54. The holding lever 54 is slidably and rotatably supported by a long hole 58 provided at one end engaging a pin 60 protruding from the machine frame, and is pulled downward to the right by a spring 62 and folded. The bent portion 54a is in contact with the bent portion 66 of the lever 64. Further, the lower green 54b of the holding lever 54 touches the bent portion 6a of the first lever 6, and the bent portion 6a touches the stepped portion 54 of the lever bar 54.
c. The lever 64 is pivotally connected to the machine frame by a pin 68, is given a rotational force by a spring 701, and has one end 72 in contact with a pin 73 protruding from the second sliding plate 30. Levers 74 and 76 for supporting the cassette guide frame 12 are fixed to the machine frame by pins 78 and 80, and the tip of one lever 74 is attached to the pin 6.
2, and the tip of the other lever 76 is connected to the downward protrusion 12a of the guide frame by a pin 82.

Therefore, the guide frame 12 is supported in a parallel link type by two substantially parallel levers 74 and 76, so that it can be moved vertically between the solid line position and the chain line position as shown in FIG. . Next, the operation of inserting and dropping the cassette will be explained.

Turn the cassette 84 vertically as shown in FIG.
When the cassette is inserted through the opening on the left side of the guide frame 12 as shown in FIG. The roller 10 of the first lever 6 is in pressure contact with the sliding frame 13 due to the elasticity of the spring 8, and when the cassette is pushed against this, only the sliding frame 13 moves to the right (see Fig. 4). When pushed, the first lever 6 rotates clockwise in FIG.
The first sliding plate 20 is connected to the spring 2 via the pin 22.
8 and move it to the right. As the first sliding plate 20 moves to the right, the second sliding plate 30 is pushed and moves to the right against the tension of the spring 40. As the second sliding plate moves to the right, the cassette guide frame vertical movement lever 42 is urged to rotate counterclockwise about the pin 44 via the spring 46.
Since the protruding pin 52 of the cassette guide frame 12, which is engaged with the outermost hole 50' at the tip, is engaged with the stepped portion of the holding lever 54, the spring 46, which allows the lever 42 to rotate, is tensioned. As the cassette is pushed in, the bent portion 6a of the first lever 6 rotates to the right along the lower green 54b of the holding lever 54, and when it reaches the stepped portion 64c at the end, the holding lever 54 is moved by the spring 62. As a result, the bent portion 6a rotates clockwise about the pin 60, and the bent portion 6a engages with the stepped portion 54c.

A, b, and c in FIG. 3 indicate that each part has moved from the chain line position to the solid line position. At this time, each part reaches the end of its stroke and the cassette cannot be pushed any further. Then, when the pressing hand is slightly loosened, the first lever 6 rotates slightly counterclockwise due to the tension of the spring. As a result, the bent portion 6a of the first lever holds the stepped portion 54c and pushes the bar 54 to move it to the left. As shown in FIG. 3e, as the holding lever moves to the left, the stepped portion 56 moves to the left and is removed from the pin 52. Therefore, the lever 42 becomes free and the spring 46 causes the pin 4 to
Rotates counterclockwise around 4. As a result, the pin 52, that is, the cassette guide frame 12, is pushed downward, and the parallel link 74 rotates around the pins 78 and 80, respectively, so that the guide frame and the cassette are lowered to the position indicated by the chain line b in FIG. 4, and the cassette reel is moved downward. engages with the reel shafts 84 and 86, and the cassette insertion/dropping operation is completed. Next, a mechanism for advancing the head stand relative to the cassette engaged with the reel shaft will be explained.

As shown in FIG. 1, the head stand 88 is provided with a recording head 90, a pinch roller 92, etc., and this head stand must move forward after the cassette is dropped and set in the normal position. The structure will be explained below. One end of a lever 96, which is pivotally attached to the machine frame by a pin 94, is connected to the head stand 88 by a pin 98.
The other end of the lever 96 is connected to the elongated hole 100 of the first sliding plate 20.
A third plate is provided near the back side of the first floor moving plate through the
It engages with the hole 104 of the sliding plate 102. The third sliding plate is slidably engaged with the pin 24 by the first member L106, and has a spring 10 between it and the first sliding plate 20.
It is multiplied by 8. The bent portion 11 of the third sliding plate engages with the stepped portion 112a at one end of the river control lever 112, and the control lever is pivotally connected to the machine frame by a pin 114, and the spring 1
16 in the counterclockwise direction to maintain the alignment of the stepped portion 112a. The other end 1 1 of the control lever 112
2b is located below the pin 52 and is struck by the pin near the end of its downward movement. With the above structure, when the first sliding plate 20 moves to the right due to the insertion of the cassette, the third sliding plate 102 also tries to move to the right by being pulled by the spring 108, but this is prevented by the engagement of the control lever 112. As a result, the spring 108 becomes tense.

When the cassette falls and the pin 52 reaches near the lower end, the pin hits the end 112b of the lever 112, rotating the lever clockwise and disengaging the stepped portion 112a from the bent portion 110. Therefore, the third sliding plate 102 becomes free and moves to the right by the spring 108, as shown in FIG. 3g, thereby causing the lever 96 to rotate clockwise. In this manner, the head stand 88 moves forward as shown by chain lines in FIG. 5, and each part on the head stand engages with the loaded cassette, completing loading. During the loading operation of the cassette, the lever 64 rotates counterclockwise around the pin 68 from the spring 701 as the pin 73 protruding from the second bar 3 moves to the right, and the other arm 64a rotates the lever 64 to move the switch 118. The circuit is activated to close the circuit and turn on the power.

Next, the operation of ejecting the cassette to the outside of the machine will be explained.

As shown in FIG. 3b, when loading a cassette, a release lever 120 is provided so as to be located below the connecting lever 14 which is pivotally connected to the first lever 6, and this lever is manually operated by a mechanism (not shown). When the lever is rotated counterclockwise, the tip of the lever hits the bent portion of the connecting lever 14 and pushes it up. As a result, the hook 18 is disengaged from the pin 22 of the first sliding plate 20, and the first sliding plate is moved to the left by the spring 28. By moving the first sliding plate to the left, the lever 96 engaged with the hole 100 is rotated counterclockwise, and the head stand 88 is moved backward. At the same time, the third drinking board 102 moves to the left along with the bar 96 and returns to its original position. The second sliding plate 30 also moves to the left following the first sliding plate due to the spring 40'. Due to the leftward movement of the second sliding plate, its bent portion 48 is
2 clockwise around pin 44, and
2 and lift the cassette guide frame 12 back to the upper position. The bent portion 78 is connected to the ejector bar 4 when the cassette is loaded.
By urging the side surfaces 42 of 2, a pressing force is applied to the mounted state of the cassette. On the other hand, the pin 73 lifts up the end 72 of the lever 64 due to the left-hand movement of the second sliding plate, and the lever 6
4 clockwise around the pin 68, the bending part 66 lifts the bending part 54a, and the lever 54 is rotated clockwise around the pin 68.
Rotate counterclockwise around the center.

Therefore, the stepped portion 54c at the end of the lever 54 is connected to the first lever 6.
It comes off from the bent part 6a. As a result, the first lever 6 is released and rotated counterclockwise by the spring, pushing the force setting sliding frame 13, which is in the raised position and is in contact with the roller 1, to the left, that is, the cassette inside it is pushed. push out The connecting lever 14 also moves to the left, and its hook 18 is connected to the first sliding plate 2.
0 pin 23. On the other hand, as the pin 52 rises, the control lever 112 rotates counterclockwise, and the stepped portion 112a
engages with the bent portion 110 of the third sliding plate 102 to lock the third sliding plate. Thus, the entire process is completed and the return release of the cassette is completed. As is clear from the above explanation,
The cassette loading device in the cassette tape recorder of the present invention can be automatically loaded by simply inserting it into the entrance of the cassette tape recorder, and the head stand can also be moved continuously with this operation, so that the cassette can be loaded automatically by simply inserting it into the entrance of the cassette tape recorder. There are very few operation steps, and these operations can be done with one hand, making it even more convenient when used for vehicle battles.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the present invention, Fig. 2 is a side view showing main parts, Figs. 3 a to g are side views showing the operating states of each part, and Fig. 4 is a cassette guide frame. FIG. 5 is a side view showing the operation of the head portion, and FIG. 5 is a plan view showing the operation of the head stand portion. 2... Machine frame, 6... First lever, 10
・・・． ...Roller, 12...Cassette holding guide frame, 14...Connection lever, 20...First
Sliding plate, 42...Cassette guide frame vertical movement lever, 5
4... Holding lever, 56... Holding stepped portion, 6
M4... Lever, 74, 76... Parallel link, 84, 6... Reel shaft, 88...
Head stand, 96... lever, 102... third sliding plate, 1/12... control lever. 2 figures ahead? 4 〆5 4 jewels 4 fins

Claims (1)

[Claims] 1 In a cassette loading device for a cassette tape recorder in which a cassette guide frame for storing a cassette inserted from the front of the cassette tape recorder is supported by a link mechanism and is movable between an insertion position and a playing position, a spring is applied to the cassette loading device. a first lever that rotates against the tension of a spring as the first lever is inserted; a sliding member that is loaded with a spring and slides against the tension of the spring as the first lever rotates; a cassette frame vertical movement lever for moving the cassette frame vertical movement downward through a connecting means connected to the guide frame; and a cassette frame vertical movement lever hooked between the sliding member and the cassette frame vertical movement lever. a spring that applies rotational force; a holding lever that holds the cassette guide frame vertical movement lever at a high position before setting the cassette guide frame via the connecting means; and a return direction of the lever at the insertion end of the cassette. a mechanism for operating the holding lever to release the holding of the connecting means and rotating the cassette guide frame to the playing position, and a head stand that is equipped with a head, pinch rollers, etc. and is slidable in the direction of contact with the cassette. and a locking mechanism that locks the head stand until the cassette is lowered to the set position, and the locking mechanism is unlocked by moving the cassette guide frame. A cassette loading device in a cassette tape recorder.