JPH0319085Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette loading/unloading device, and more particularly, it is an object of the present invention to provide a cassette loading/unloading device configured so that the cassette loading/unloading operation can be carried out smoothly and stably.

Embodiments of the cassette loading/unloading device according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of the cassette loading/unloading device according to the present invention, as seen from the top side of a cassette deck. This cassette loading/unloading device 1 is a motor-driven type, and the cassette deck body 2
incorporated within. The left and right ends of the cassette holder 3 are fixed to the sliding structure 4, respectively, and the cassette holder 3 has a cassette attachment position A and a cassette detachment position B, as described later.
Move parallel between. As shown in FIG. 2, the cassette holder 3 has a structure in which holder members 6 and 7 are fixed to a U-shaped frame 5 so as to face each other.
The center height position is attached to the tips of rods 8 and 9. As shown in FIG. 3, the compact cassette 10 is inserted from above into the cassette deck with the head insertion opening facing downward, with the left and right edges fitted into the recesses of the holder members 6 and 7, respectively.

The sliding structure 4 includes rods 8 and 9 arranged in parallel.
and a beam member 11 horizontally suspended at the rear end, and a cassette holder 3 is horizontally suspended at the leading end. The rod 9 is a bearing 1 fixed to a chassis 12 screwed to the cassette deck body 2.
3, another rod 8 is supported through a hole 12a in the chassis 12 and is shown by arrows X ₁ ,
X Can slide in _two directions. Since the long bearing 13 is provided only on one rod, the sliding structure 4 can slide smoothly even if the assembly accuracy is not strict.

The above-mentioned sliding structure 4 slides when the rotating arm 14 rotates. The rotating arm 14 is connected to the worm 1 by a motor 15 with a reduction gearbox.
6. It rotates about a shaft 18 via a worm gear 17 (fixed to the arm 14) in the direction of arrow _Y1 when the cassette is attached, and in the direction of arrow _Y2 when the cassette is removed. The rotary arm 14 has a long circular arc hole 19a along an arc centered on the axis 18, and the arm 1
A hook-shaped elongated hole 19 is formed, which extends in the longitudinal direction of the hole 4 and includes a radial elongated hole 19b that is continuous with one end of an arcuate elongated hole 19a. The rotating arm 14 is connected to the sliding structure 4 by fitting its hook-shaped elongated hole 19 with a pin 20 on the beam member 11 . Also pin 20
A coil spring 22 is stretched between the pin 21 at the tip end of the rotating arm 14.

When a cassette is attached, the arm 14 of the cassette attaching/unloading device 1 rotates in the direction of arrow _Y1 , and the sliding structure 4 rotates in the direction of arrow _X1, as shown in FIGS. is moving to. The cassette holder 3 is fitted into a cassette mounting recess 23 of the cassette deck main body 2. Cassette 10
are housed in the holder 3, and are mounted parallel to the cassette mounting surface 12b by pressing against the left and right positioning pins 24 and 25 planted on the cassette mounting surface 12b of the chassis 12. . In addition, a cassette mounting surface 1 is provided in the hub of the cassette 10.
Reel shafts 26 and 27 protruding from 2b pass through it.

Further, as shown in FIG. 3, the center of the back surface of the cassette 10 is pressed by a pressing member 30 and urged toward the magnetic head. Further, a claw detection member 31 acts on an accidental erasure prevention claw on the back side of the cassette 10. The pressing member 30 is pivotally supported by a pin 32 on the back side of the chassis 12, and is biased counterclockwise by a torsion coil spring 33. The claw detection member 31 is the pin 3
4, and the rear arm is pushed up by the detection switch 35 so that the claw can be detected.

When the eject button is operated, the motor 15 rotates, and the rotating arm 14 rotates in the direction of arrow _Y2 from position _P2 to position _P3 via the worm gear mechanism.
While the rotating arm 14 rotates from P ₁ to P ₂ ,
In the first step, the sliding structure 4 remains stationary and the pressing member 30 etc. retreat upward, and from _P2
During the rotation to _P3 , the sliding structure 4 moves in the direction of arrow _X2 as a second step.

When the rotating arm 14 rotates from position P ₁ in the direction of arrow Y ₂ , the pin 21 moves relatively along the circular arc elongated hole 19a, and the sliding structure 4 remains stationary. It can be done. As the arm 14 rotates, the cam plate 36 connected thereto moves in the direction of arrow _X1 (FIG. 4). As the cam plate 36 moves in response to the rotation of the arm 14 to position _P2 , the roller 37 is pushed by the cam part 38, and the vertical sliding plate 39 moves in the direction of arrow _Z2 in FIG. Move as shown. As the sliding plate 39 moves, the pressing member 30 is locked at one end, rotates clockwise as shown by the two-dot chain line, and separates from the back of the cassette, and the cassette 10 releases its force toward the head. be done. Further, due to the rotation of the pressing member 30, the rotation lever 40 rotates, and the claw detection member 31
It is pushed by and rotated to the non-operating position, and the claw detection part escapes from the cassette. As a result, the cassette 10 in the holder 3 becomes movable together with the holder 3 in the direction of arrow _X2 .

When the rotating arm 14 rotates to position _P2 , the end of the circular arc elongated hole 19a comes into contact with the pin 20, and the continued rotation of the arm 14 pushes the pin 20 against the side wall of the radial elongated hole 19b. is shifted in the direction of the axis 18 along the elongated hole 19b as shown by the arrow
X Move in _two directions. As a result, the sliding structure 4
moves in the direction of arrow _X2 in accordance with the rotation of the arm 14, and the cassette holder 3, together with the cassette 10, escapes from the cassette mounting portion 23 and protrudes from the front surface 2a of the cassette deck main body 2, as shown by the two-dot chain line in FIG. The cassette removal position is reached and the cassette 10 is removed.

Note that the rotating arm 14 is moved into position by the motor 15.
When rotating from P ₁ in the direction of arrow Y ₂ , arm 14
is assisted by the tensile force of the coil spring 22 to start rotating, the starting torque of the motor 15 is small, and the arm 14 starts rotating smoothly.

Also, when the cassette installation button is operated, the motor 1
5 is reversed, the arm 14 rotates from position P ₃ in the direction of arrow Y ₁ , and the sliding structure 4 and holder 3 move in the direction of arrow Y.
X Move in _one direction. At the stage when the arm 14 has rotated to position _P2 , the sliding structure 4 and the cassette holder 3 move to their original positions, the cassette holder 3 is fitted into the recess 23, and the cassette 10 is installed in a predetermined position. . When arm 14 rotates to position _P2 ,
The pin 20 reaches the end of the radial elongated hole 19b, and as the pin 20 moves along the arcuate elongated hole 19a, the arm 14 rotates to position P ₁ independently of the sliding structure 4. move. Arm 14 is in position P ₂
When the sliding plate 39 is rotated beyond the arrow _Z2 direction, the pressing member 30 and the claw detecting member 31 are both moved to the operating position. Furthermore, the holder 3 is drawn into the cassette mounting recess 23 at two locations, on the right and left sides, so that the cassette 10 can be mounted more stably.

Further, when the cassette is loaded or unloaded, the cassette holder 3 moves in parallel over a relatively long distance in a direction perpendicular to the cassette loading surface 12b and reaches position A or B. For this reason, the reel shafts 26 and 27 have shaft portions 26b and 27b that protrude from the driving claw portions 26a and 27a that fit into the reel herbs.
Even if the reel hub has a structure with a large height dimension, the reel hub can smoothly fit into and come out of the reel shafts 26 and 27 without colliding with or prying the reel shafts. As shown in FIG. 1, the cassette 10 is fitted into the drive claws 26a, 27a, and the shafts 26b, 27b protrude by a dimension H (a dimension that can be gripped with fingertips) from the upper surface of the attached cassette 10. ing. As a result, the operator can manually rotate the reel hub by gripping the shaft parts 26b and 27b and rotating them as appropriate in the same manner as in the case of an open deck. This is useful for accurately aligning the stop position of the tape.

Further, the motor 15 can be stopped, reversed, etc. by switching the switch 43 using the locking arms 41 and 42 that protrude from the rotating arm 14.
controlled. Now, regarding the cassette mounting position A, which requires precise positioning, the above position A of the cassette holder 3 is determined by the assembly precision of the rotating arm 14, etc., and the stopping position P of the rotating arm 14 is determined by the assembly accuracy of the rotating arm 14 etc. ₁ is unrelated. Therefore, it is not necessary to strictly set the rotation angle range of the rotation arm 14 with respect to the moving distance of the cassette holder 3, and accuracy is not required for the mounting position of the switch 43, which is convenient for assembly.

Further, the sliding structure 4 described above is driven near its rear end, and the motor 15, rotating arm 14, etc., which are the drive mechanism for moving the structure 4, are arranged deep inside the deck body 2. ing. For this reason,
Compared to conventional decks, the deck body 2 has a simpler structure around the cassette mounting recess 23 on the front side, and space is secured here. For this reason,
The degree of freedom in design is improved, and a micro switch (not shown) or the like as a sensor for detecting the mounting state of the cassette holder, for example, is disposed in this space.
Further, design restrictions on the tape running system are relaxed, and the tape running system can be structured to improve tape running characteristics.

FIG. 5 shows a second embodiment of the cassette loading/unloading device according to the present invention. This cassette loading/unloading device 50 is of a manual operation type, and has substantially the same structure as the device 1 described above except for the mechanism for moving the sliding structure, and the components shown in FIG. 1 in FIG. Identical parts are given the same reference numerals and their explanations will be omitted.

In FIG. 5, the rotating arm 51 has its base attached to the support plate 5.
2, and a radially upper elongated hole 54 on the distal end side is fitted with the pin 20.
This rotating arm 51 is rotated by a torsion spring 55.
The sliding structure 4 is biased in the _Y2 direction, and moves in the _X2 direction by the spring force of the torsion spring 55.

When the cassette 10 is installed, the rotating arm 51 is rotated in the direction of arrow _Y1 , as shown in FIG.
is locked to the first surface 57a of. This lock lever 57 is pivotally supported by a pin 58 on the support plate 52, and has a second surface 57b and a third surface 57c other than the first surface 57a as surfaces related to the pin 56.

To remove the cassette, press the eject button 59. When the eject button 59 is pressed, the L-shaped lever 60 releases the torsion spring 61 as shown in FIG.
It rotates in the direction of arrow C about the pin 62 against the When the lever 60 rotates, the rotating arm 63 rotates about the pin 64 in the direction of arrow D.
On the other hand, the connecting plate 65 moves in the direction of arrow _X2 and the lock lever 57 rotates in the direction of arrow E.

In the case described above, the sliding plate 39 slides due to the rotation of the rotation lever 63 while the lock lever 57 rotates to the position shown by the two-dot chain line in FIG. In the same manner as above, it is retreated from the cassette 10. Further, while the lock lever 57 rotates to the above position, the pin 56 is locked by the first surface 57a, the sliding structure 4 is maintained in the state shown in FIG. 5, and the cassette holder 3 is Recess 2
It is said that it remains inserted within the lock lever 57
If the pin rotates and exceeds the above position, pin 5
6 is released from the lock by the first surface 57a, and the rotating arm 51 is positioned in the direction of arrow _Y2 by the spring 55.
Rotate from P ₄ to position P ₅ . According to the rotation of the arm 51, the sliding structure 4 moves in the direction of arrow _X2 ,
The cassette holder 3 moves to the removal position B and the cassette 10 is removed.

It should be noted that when the rotating arm 51 rotates, the pin 56 moves along the second surface 57b of the lock lever 57, followed by the third surface 57c. Here, the second and third surfaces 57b and 57c are surfaces that approximate circular arcs centered on the pin 53, and the lock lever 57 is maintained at the position indicated by the two-dot chain line above even while the arm 51 is rotating. dripping Therefore, both the pressing member 30 and the pawl detecting member 31 remain retracted upward during and after the cassette ejecting operation.

When mounting a cassette, the operator pushes the cassette holder 3 directly into the recess 23 in the direction of arrow _X1 . By this operation, the rotating arm 51 is moved by the spring 5.
When the arm 51 reaches its original position P ₄ by rotating in the direction of arrow Y ₁ against pressure 5, the operating system, pressing member system, and lock lever system each return to their original states due to the action of the torsion spring 61. . In particular, the arm 51 is locked by the lock lever 57, the cassette holder 3 is fitted into the recess 23 and held at position A, and the cassette 1 is
0 is attached.

Note that during the cassette loading/unloading operation, the cassette holder 3 is attached to the cassette loading surface 12b as in the above case.
Shift between positions A and B by parallel movement in a direction perpendicular to .

As described above, the cassette loading/unloading device of the present invention includes: a cassette holder support mechanism that supports a cassette holder that stores a cassette; a cassette pressing member that presses a cassette stored in the cassette holder to a predetermined position; a movement control mechanism that moves the support mechanism to move the cassette holder between a cassette mounting position and a cassette removal position; The movement control mechanism is configured to have a range in which it operates independently of the support mechanism, and the movement control mechanism operates within the range when the movement control mechanism is ejected.
The cassette pressing member is configured to retreat to a non-operating position away from the cassette, and to reach the operating position for pressing the cassette by operating within the range described above when the cassette is attached.
Due to the continuous movement of the movement control mechanism in one direction,
When removing a cassette, the member that presses the cassette into a predetermined position is moved backwards, and then the cassette holder is moved, allowing smooth and stable cassette removal operation, and when the cassette is installed, the cassette movement control mechanism As the cassette pressing member moves after completion of mounting, the cassette pressing member reaches the operating position for pressing the cassette, so that the cassette mounting operation can be carried out smoothly and stably.

In addition, even if the final operating position of the movement control mechanism is slightly shifted, the cassette holder is securely installed within the cassette holder, so the movement range of the movement control mechanism does not need to be precise, which is advantageous for assembly. has.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the cassette deck main body showing a first embodiment of the cassette loading/unloading device according to the present invention, as seen from the top side, Fig. 2 is a perspective view of the cassette holder in Fig. 1, and Fig. 3 is the same as that shown in Fig. 1. View from the cassette holder side with the middle cassette holder and chassis omitted,
4 is a diagram showing the cam plate portion in FIG. 1, FIG. 5 is a plan view of a second embodiment of the device of the present invention, and FIG. 6 is a perspective view of the operating system in FIG. 5. 1, 50...Cassette loading/unloading device, 2...Cassette deck body, 3...Cassette holder, 4...
Sliding structure, 5... U-shaped frame body, 6, 7... Cassette holder member, 8, 9... Rod, 10... Compact cassette, 11... Beam member, 12... Chassis, 12b... Cassette Mounting surface, 14, 51
...Rotating arm, 15...Motor, 19...Hook-shaped long hole, 19a...Circular long hole, 19b...Radial direction long hole, 20...Pin, 23...Cassette mounting recess, 26, 27 ...Reel shaft, 26b, 27b...
...Shaft portion, 30... Pressing member, 31... Claw detection member, 36... Cam plate, 38... Cam portion, 39...
Vertical sliding plate, 40... Rotating lever, 41, 42...
... Locking arm, 43 ... Switch, 55 ... Torsion spring, 57 ... L-shaped lock lever, 57a ...
1st surface, 57b...2nd surface, 57c...3rd surface
surface, 59... Eject button, 63... Rotating lever, 65... Connecting plate.

Claims (1)

[Claims for Utility Model Registration] (1) A cassette holder support mechanism that supports a cassette holder that stores a cassette, a cassette pressing member that presses a cassette stored in the cassette holder to a predetermined position, and the support mechanism. a movement control mechanism for moving the cassette holder between a cassette loading position and a cassette removal position; The cassette pressing member is configured to have a range of operation independent of the mechanism, and the movement of the movement control mechanism within the range at the time of ejection causes the cassette pressing member to retreat to a non-operating position away from the cassette; A cassette loading/unloading device configured to reach an operating position for pressing the cassette by operating within the above range during loading. (2) The movement control mechanism includes a rotating arm member having an arcuate long hole that fits into the pin of the support mechanism, and the rotating arm member allows the pin to move relatively within the arcuate hole. The cassette loading/unloading device according to claim 1, which rotates independently of the support mechanism within the rotating range of movement. (3) The movement control mechanism rotates by a predetermined angle in one direction after an eject operation and in the opposite direction after completion of loading the cassette while the support mechanism is stopped, respectively, to release the lock on the support mechanism and lock the support mechanism. A cassette loading/unloading device according to claim 1, which comprises a rotational locking member.