JPH0348588B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a tape player in which cassette loading and head crimping operations are performed using the driving force of a motor.

[Technical Background of the Invention] Recently, automation of tape players has progressed, and autoloading mechanisms have been proposed that automatically load and eject cassettes. With this autoloading mechanism, when the cassette is inserted halfway into the pack guide, the driving force of the motor sets the cassette at the playing position on the reel base.
Next, move the head forward and press it against the tape.
This series of operations is automatically performed using the driving force of the motor. When the cassette is installed, the spring is stored with the driving force of the motor, and when the eject operation is performed, the stored spring force is released and the cassette is moved from the playing position to the outside of the tape player. I'm trying to take it out.

Compared to conventional manual loading mechanisms, tape players equipped with such an autoloading mechanism use the driving force of the motor to store the ejecting spring, making it extremely easy to load the cassette. It has the advantage of being able to be done with light force.

[Problems with the Background Art] However, in the conventional tape player as described above, loading the cassette and crimping the head are performed as one continuous operation, so when ejecting the cassette, the retracting operation of the head and the crimping of the cassette are performed simultaneously. The eject operation is performed all at once by the force of the spring stored when the cassette is installed. As a result, the so-called stop mode, in which the head is moved back to stop playing the cassette while the cassette is still installed in the tape player, and the eject mode, in which the cassette is ejected, cannot be separated. The disadvantage was that the cassette was immediately ejected when the system was stopped. If stop and eject are always performed in succession like this, even if you do not need to change the cassette and just want to temporarily stop play, you will have to take out the cassette one by one, which is inconvenient for operation. It was hot.

Furthermore, if the process from crimping the head to ejecting the cassette is performed continuously in this way, there is a risk that the cassette will be ejected before the head is fully pulled out from inside the cassette, and the head and cassette may become engaged and the ejection may not occur. There were also drawbacks that made it impossible.

[Object of the Invention] The present invention was proposed in order to solve the above-mentioned drawbacks of the conventional tape player. By performing the second operation and crimping the head, the cassette can be loaded and ejected.
To provide a driving force switching device for a tape player which allows a stop operation to be performed with a cassette attached by separately performing crimping and retracting of a head.

[Summary of the Invention] The driving force switching mechanism of the present invention interlocks the loading mechanism and the pulling plate of the head crimping mechanism with respect to the locking plate that moves intermittently by the driving force of the motor, so that the loading mechanism is connected to the mounting of the cassette. When the lock plate is moved for the first time, the lock arm separates the head crimping mechanism from the pulling plate and operates only the loading mechanism, and when the loading mechanism reaches the cassette attachment position, After being locked, the head crimping mechanism and the pulling plate are connected, and the second movement of the locking plate activates the head crimping mechanism.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be specifically described based on the drawings.

(1) Structure Pack guide...Fig. 1 The pack guide 1, which holds the cassette inside the tape player, is a box-shaped box with an opening at the front for the cassette insertion opening and at the bottom for setting the cassette on the reel base. It is a member. The pack guide 1 is movably attached to the tip of the support frame 2 at the center portion of its upper surface. This support frame 2
is supported at the receiving shaft portions provided on the left and right sides of the tape player so that its tip portion can rotate in the vertical direction with respect to a support shaft 3 provided in the frame portion at the back of the tape player. A guide arm 4 is extended from this bearing portion toward the front side of the tape player, and the tip of this guide arm 4 protrudes toward the outside of the pack guide 1, that is, toward the frame on the side of the tape player. A guide pin 5 is fixed thereto.

A guide groove 6 extending along the front and back direction of the tape player is provided in the center of the upper surface of the support frame 2.
is formed. Inside this guide groove 6,
A pack stopper 7 is slidably fitted. The rear end of this pack stopper 7 is
It protrudes vertically into the pack guide 1, and this vertical protrusion becomes a contact part 8 with which the tip of the cassette inserted into the pack guide 1 comes into contact. On the other hand, the front end of the pack stopper 7 has a claw portion 9 that engages with the reel shaft insertion hole of the cassette inserted into the pack guide 1.
is formed.

A pressing piece 10 is integrally formed on the side edge of the pack stopper 7. On the other hand, a driven member 12 is attached to a frame 11 of the tape player extending over the top surface of the pack guide 1 so as to be rotatable about a support shaft 13. This driven member 12 and support frame 1
A spring 14 is tensioned between the driven member 12 and the driven member 12, and the driven member 12 is always biased clockwise. This driven member 12 is connected to a release plate 15 at a pin-shaped projection 12a provided integrally therewith. This release plate 15 is supported so as to be movable in the front and back direction with respect to the frame of the tape player, and on the opposite side (front end) of the connection part with the driven member 12, there is a part as described below. A protrusion 16 is provided that presses the stopper of the intermittent gear of the drive mechanism in the releasing direction.

Drive Mechanism...Figures 2 to 5 As shown in Figures 2 and 3, an intermittent gear 18 is provided on the side of a drive gear 17 that is constantly rotated by the driving force of a motor. This intermittent gear 1
8 has a notch 19 around which gear teeth are not formed, and this notch 19
is facing the drive gear 17,
If the rotation from the drive gear 17 is not transmitted and the position of the notch 19 shifts, the drive gear 1
7, it is driven once again to the position of the notch 19.

A recess 20 is provided on the lower surface of the intermittent gear 18 in alignment with the notch 19 . The tip of a stopper 21 provided on the side of the intermittent gear 18 is engaged with this recess 20. This stopper 21 has its tip always connected to the recess 22 by the spring 22.
It is urged to go inside. This stopper 21 is provided with a first contact portion 23 against which the protrusion 16 provided on the release plate 15 comes into contact. In addition, the second
A contact portion 24 is provided.

The tape end detection lever 25 has the fourth and fifth tape end detection levers.
As shown in the figure, it is rotatably attached to a support shaft 26. This tape end detection lever 2
5 is a part that rotates clockwise in the figure when the reel base on the winding side is stopped when the cassette is installed (generally when the tape end is reached in the play state or fast forward state), and it protrudes toward the stopper 21 side. The press piece 25a is provided with a press piece 25a. This pressing piece 25a is
It is provided facing the second contact portion 24 of the stopper 21. Before the tape end detection lever 25 is rotated, that is, while the tape is running, the tape end detection lever 25 is located at a position where the pressing piece 25a and the contact portion 24 of the stopper engaged in the recess 20 are separated. The dimensions and rotation are such that when the tape end is reached and the detection lever 25 rotates, the pressing piece 25a can rotate the stopper 21 counterclockwise via the second contact portion 24. The angle of movement is set.

The tape end detection device for rotating the tape end detection lever 25 can be any of a variety of conventionally known devices; for example, a photo coupler or a proximity switch can be used to electrically detect the tape end. Detection commands may be used to excite the plunger and rotate the tape end detection lever 25 based on the detection command, or changes in tape tension at the tape end or fluctuations in friction torque due to stopping the rotation of the reel base may be detected as mechanical actions. A device that detects the detection lever 25 and rotates the detection lever 25 can be used.

The stopper 21 is provided with a protruding switch pressing piece 27 separate from the engaging portion of the intermittent gear 18 into the recess 20, which faces a power supply switch 28 for the motor and suction plunger provided near the stopper 21. ing. This switch pressing piece 27 does not press the power-on switch 28 at the position where the stopper 21 is engaged with the intermittent gear 18 in the recess 20, and the stopper 21 rotates counterclockwise and the recess If it deviates from 20,
It is activated by pressing the power-on switch 28.

As shown in FIGS. 2 and 3, the surface of the intermittent gear 18 has a driving part that expands in a spiral shape from the center, and a return part that is almost linear connecting the maximum diameter part of the driving part and the center. Drive cam 2 consisting of
9 are integrally provided. This drive cam 2
A power plate 30 is disposed above the drive cam 9 so as to be able to reciprocate, and a roller-shaped cam follower 31 provided on the lower surface of the power plate 30 is in contact with the outer peripheral portion of the drive cam 29 . The cam follower 31 is located approximately at the center of the linear return portion of the drive cam 29 when the intermittent gear 18 is locked by the stopper 21 .

On the back side of such a power plate 30,
Drive plate 3 via L-shaped link 32
3 are connected. This drive plate 33
is a plate-shaped member extending in the width direction of the tape player, and is supported by the tape player so as to be movable along its longitudinal direction. Each mechanism constituting the control device of the present invention is connected to the opposite end (right end) of the drive plate 33 via an L-shaped link 34 shown in FIGS. 6 and below.

Loading eject mechanism…6th to 10th
As shown in FIGS. 6 to 8, a roller-shaped engaging portion 35 is provided at the end of the arm of the L-shaped link 34 on the opposite side from the drive plate 33. This roller-like engaging portion 35 is provided close to a lock plate 36 that is movable in the front-rear direction of the tape player.
It can be engaged with a stepped portion 37 provided near the inner end of 6. An L-shaped link 3 is provided at the rear end of the stepped portion 37 and the lock plate 36.
An arcuate sliding portion 38 is formed to follow the arcuate locus of the roller-like engaging portion 35 as the roller-like engaging portion 35 rotates. One end of a loading link 39 is connected to the front end of the lock plate 36 by a pin 36a. This loading link 39 is rotatably attached to a support shaft 39a at its center.
The end opposite to the lock plate 36 serves as a pressing portion 39b of a loading plate, which will be described below.

The loading plate 40 is supported so as to be slidable in the front-rear direction on the right side plate 41 of the tape player, and includes a vertical portion 40a along the side plate 41, and a downward direction extending from the lower end of the vertical portion 40a toward the outside of the tape player. This member has a crank-shaped cross section, and includes a horizontal portion 40b, and an upper horizontal portion 40c extending toward the inside of the tape player from the upper edge of the inner portion of the vertical portion 40a. This loading plate 40 is constantly urged toward the back of the tape player by a spring 40a stretched between it and the frame of the tape player.

A lower horizontal portion 40b of the loading plate 40 is provided with an abutting portion 42 that abuts against the pressing portion 39b of the loading link 39 from the front side of the tape player. In addition, this lower horizontal portion 40b
A long hole 44 having a stepped portion 43 is formed in the front side of the lock arm 45, and an engagement piece 46 provided on a lock arm 45 is inserted into the long hole 44. This lock arm 45 is a plate-shaped member extending in the front-rear direction of the tape player, and has the engaging piece 46 disposed approximately in the center thereof.
is formed so that this engaging piece 46 can come into contact with a stepped portion 43 provided on the loading plate 40 from the back side of the tape player. The lock arm 45 is rotatably attached to a support shaft 47 fixed to the frame of the tape player at a portion closer to this side than the engagement piece 46. The front end of the lock arm 45 has a curved long hole 4 extending substantially in the width direction of the tape player.
8 is formed, and the left edge of this elongated hole 48 serves as an abutting portion for a lock release pin 49.

The lock release pin 49 is connected to the lock arm 45.
The eject arm 50 is installed to protrude from the lower surface of the eject arm 50, which is coaxially attached to the support shaft 47 of the eject arm 50. Near the support shaft 47 of the eject arm 50,
A power off switch 51 is provided, and a switch pressing piece 52 is provided integrally with the issue arm 50 facing the power off switch 51. The power off switch 51 is electrically connected in series with the power on switch 28, and is turned on when pressed by the switch pressing piece 52. On the opposite side of the eject arm 50 from the lock release pin 49, a stopper arm 53 is integrally provided facing toward a stop/eject lever 103, which will be described later.

The lock arm 45 and the eject arm 50 are connected to springs 54 and 5 provided between the lock arm 45 and the eject arm 50 and the frame of the tape player.
5 is being pulled counterclockwise.

A lifting cam 56 for the pack guide 1 is formed in the vertical portion 40a of the loading plate 40, as shown in FIGS. 9 and 10. The elevating cam 56 includes a tapered portion 56a that slopes downward from the front side to the rear side of the tape player, and a horizontal portion 56b that extends from the upper end of the tapered portion 56a toward the front side. Then, inside this elevating cam 56,
A guide pin 5 provided on the support frame 2 of the back guide is slidably inserted.

As shown in Fig. 6, loading plate 40
An upper horizontal portion 40 integrally formed on the inner side of the
At c, the pulling cam 57 of the stopper arm 58 is curved from the left front side to the right rear side. The stopper arm 58 is rotatably attached at a support shaft 60 to a support portion 59 extending horizontally from the upper edge of the side plate 41 of the tape player. The tip of the stopper arm 58 is extended toward the center of the support shaft frame 2 of the pack guide.
A guide pin 6 is provided at the top of the pack stopper 7 in a U-shaped guide groove 61 at its tip.
2 is slidably fitted. Note that this guide pin 62 has a guide groove 6 at its upper part.
1, and is prevented from coming off the guide groove 61. A torsion spring 63 is provided between approximately the center of the stopper arm 58 and the support frame 2, and the spring 63 always urges the tip of the stopper arm 58 toward the front side of the tape player. On the other hand, the stopper arm 58 is provided with a protruding portion 64 facing toward the back of the tape player at its base end, and the drawing cam 5 is disposed on the lower surface of the distal end of the protruding portion 64.
A roller 65 that slides on the 7 surface is provided.

A connecting plate 66 is provided from the base end of the stopper arm 58 so as to be slidable in the front and back direction and extends toward the front side of the tape player. This connecting plate 66 has an engaging claw 68 provided at the proximal end of the stopper arm 58 at a protrusion-like pressing portion 67 provided on the inner side thereof.
It is in contact with the tape player from the back side. The front end of the connecting plate 66 is connected to a lever 6 provided on the opposite side of the switch pressing piece 52 of the eject arm 50.
It is movably connected to the tip of 9 via a pin and a notch. Therefore, this connecting plate 66 is always urged toward the front side by the force of the spring 55 that pulls the eject arm 50 counterclockwise.

Head crimping mechanism...FIGS. 11 to 13 A plunger link 70 is provided on the upper side of the lock plate 36. The plunger link 70 is a plate-shaped member extending in the front-rear direction of the tape player, and is rotatably attached to the support shaft 39a of the loading link 39 at its front end. This plunger link 70 has
A receiving roller 71 is provided so as to sandwich the locking plate 36 between the roller-like engaging portion 35 provided on the L-shaped link 34. Further, on the inner side of the plunger link 70, a suction piece 7 is provided opposite to the suction plunger 72.
3 is installed. The suction plunger 72 is for suctioning the inner end of the plunger link 70 toward the right side of the tape player, that is, in a clockwise direction. A spring 74 is stretched between the inner end of the plunger link 70 and the frame of the tape player, and the spring 74 urges the suction piece 73 toward the suction plunger 72. A self-holding switch 75 of the suction plunger 72 is arranged approximately halfway above the plunger link 70, and a pressing piece 76 of the self-holding switch 75 is integrally provided on the suction plunger 72. This self-holding switch 75 is electrically connected in parallel to the power-on switch 28.

A pin 3 is attached to the front end of the lock plate 36.
A pulling plate 77 is connected via 6a. This pulling plate 77 is a plate-shaped member that extends toward the front side of the tape player, and a spring 78 provided between this pulling plate 77 and the locking plate 36 causes the front end of the pulling plate 77 to is always biased toward the inside (clockwise) of the tape player. As shown in FIG. 6, the rear end of the lock arm 45 pulls the front end of the pulling plate 77 against the force of the spring 78. It is in contact with the tape player so as to press it outward. A long hole 79 extending in the longitudinal direction is formed in this drawing plate 77, and an engaging portion 8 for a head link 81, which will be described below, is located approximately in the center of the right edge of this long hole 79.
0 is formed.

The head link 81 includes an L-shaped drive side link 81a and a head side link 81b extending substantially straight, which are rotatably attached to a common support shaft 82. A torsion spring 83 is provided between both links 81a and 81b, and both links are normally integrated into a T-shape as a whole to form a head link 81. At the end of the vertical piece of the T-shaped head link 81, that is, at the tip of one arm of the drive side link 81a, an engagement pin 84 is provided to protrude downward. It is movably inserted into the elongated hole 79 of the pulling plate 77. The other arm of the drive link 81a and the head side link 81
The other arms of b are overlapped with each other and constitute one horizontal part of the T-shaped head link 81, and the torsion spring 83 is attached to this overlapped part. In order to ensure that both links 81a and 81b overlap, a stopper 85 formed on the head side link 81b engages with the edge of the drive side link 81a to reduce the repulsive force of the torsion spring 83. I'm starting to accept it. At the opposite end of the head side link 81b, that is, at the opposite end of the horizontal portion of the T-shaped head link 81, a head plate pressing pin 86 is provided to protrude downward.
A pressing pin 86 is provided between the head plate pressing pin 86 and the frame of the tape player.
A spring 87 is provided for pulling the head in the backward direction of the head, that is, to the right in the figure.

Incidentally, at the end of the vertical piece of the T-shaped head link 81, a lock pin 88 is provided to protrude upward on the opposite side from the engagement pin 84 for the pulling plate 77. This lock pin 8
8 is inserted into the engagement hole 90 of the holding plate 89. The holding plate 89 is a plate-shaped member extending in the front-rear direction of the tape player, and is rotatably attached to the support shaft 39a of the plunger link 70 at its rear end. Between the holding plate 89 and the plunger link 70, there is a torsion spring 91 and a stopper 92 that receives the repulsive force of the torsion spring 91 and holds the plunger link 70 and the holding plate 89 in a straight line. is provided. On the other hand, the engagement hole 90 provided in the holding plate 89 is formed in an arc shape in accordance with the locus of the lock pin 88 centered on the support shaft 82 of the head link, and is located in the inner part of the tape player. A stepped portion 93 that engages with the lock pin 88 is formed.

Head plate (FIGS. 11-13) The head plate 94 is provided below the pack guide 1 so as to be movable in the width direction of the tape player. A head 95 is mounted in the center of this head plate 94. Further, pinch rollers 96 are provided in the forward and reverse directions to sandwich the head 95. On the other hand, on the tape player side, a forward and reverse capstan shaft 97 is provided opposite to these pinch rollers 96. Reel bases 98 are provided in the forward and reverse directions along the arrangement direction of the capstan shafts 97, and the tape T in the cassette is
It runs from one reel base to the other reel base via a capstan shaft. A pin insertion hole 99 is provided on the side of the head 95 in such a head plate 94, and the lower end of the head plate pressing pin 86 provided on the head link 81 is inserted into this insertion hole 99.

Each operation lever...FIG. 14 Furthermore, in the tape player of this embodiment, the rewind lever 10 is used as an operation lever.
0, a fast forward lever 101, a play/program change lever 102, and a stop/eject lever 103 are provided. These operating levers are provided in parallel on the front surface of the tape player so as to be pushable in the front and rear directions. Of these operating levers, the play/program change lever 102 has a press pin 104 of a switching plate described below.
An eject arm pressing pin 105 that comes into contact with the stop arm 53 of the eject arm 50 described above is fixed to 3 .

A switching plate 106 is arranged from the rewind lever 100 to above the play/program change lever 102, and the switching plate 106 is supported so as to be movable in the longitudinal direction of the tape player. A long hole 107 is formed in the switching plate 106 in accordance with the position of the switching plate pressing pin 104. This elongated hole 107 has a length corresponding to the push stroke of the play/program change lever 102.
When 02 is pushed in, it is pressed by the pressing pin 105 and moves toward the back of the tape player. A spring 10 is connected between this switching plate 106 and the frame of the tape player.
8 is provided, and the switching plate 106 is biased toward the front side by this spring 108. A tapered pressing piece 109 whose front side widens laterally is provided on the side of the switching plate 106, and this pressing piece 109 engages the first contact provided on the stopper 21 of the intermittent gear that constitutes the drive mechanism. It faces the contact portion 23. That is, this pressing piece 109 does not contact the first abutting portion of the stopper 21 when the switching plate 106 is in the front side position, and on the other hand, when the switching plate 106 moves to the back side, the pressing piece 109 It abuts against the contact portion 23 and presses the stopper 21 so as to remove it from the recess 20 of the intermittent gear 18.

(2) Operation Next, the operation of the tape player control device of this embodiment having the above-described configuration will be explained.

Inserting a cassette...FIGS. 1, 2, and 6 In FIG. The pack stopper 7 is moved toward the inner side along the guide groove 6. Then, the tip of the stopper arm 58 connected to the stopper arm 7 rotates toward the back, and the engaging claw 68 provided at the base end of the stopper arm 58 conversely escapes toward the front. Therefore, the connecting plate 66, which had been pressed by the engaging claw 68, becomes free, and the eject arm 50, which is linked to the connecting plate 66, is pulled counterclockwise by the spring 55, and the eject arm 50, which is connected to the connecting plate 66, is pulled counterclockwise by the spring 55, and The switch pressing piece 52 presses the power off switch 51 to turn it on. Note that in this state, the power-on switch 28 is still off, so the motor does not rotate.

As the pack stopper 7 moves toward the inner side, the pressing piece 10 provided on it as shown in FIG.
causes the driven member 12 to rotate counterclockwise against the force of the spring 14. Then, the release plate 15 interlocked with the driven member 12 moves toward the front side of the tape player, and the protrusion 16 at the front end thereof presses the first contact portion 23 of the stopper 21 of the intermittent gear.

As a result, the stopper 21 rotates counterclockwise, and the switch pressing piece 27 provided thereon presses the power-on switch 28 to turn it on, so the motor starts rotating and the loading ejector is turned on. The suction plunger 72 of the mechanism is energized.

At the same time, as the stopper 21 rotates, the stopper 21 comes off from the recess 20, so the intermittent gear 18 becomes free. Here, as shown in FIG. 2, the cam follower 31 that is in contact with the linear return portion of the drive cam 29 formed on the intermittent gear 18 moves the linear return portion due to the force of the spring 30a that pulls the power plate 30. The smallest diameter portion of the sliding drive cam 29 is reached. At this time, the power plate 30 moves slightly toward the back of the tape player together with the cam follower, and as the power plate 30 moves, the drive cam 29 rotates slightly counterclockwise. Then, the intermittent gear 18 that had been facing the drive gear 17 at the notch 19 rotates a little and meshes with the drive gear 17, so it rotates counterclockwise under the rotational force of the powered motor. It turns out.

Operation of the drive mechanism...Figures 3, 7, and 8 When the stopper 21 comes off and the intermittent gear 18 starts rotating when the cassette is inserted, the drive cam 29 provided on the surface of the intermittent gear also rotates, and the outer peripheral surface of the cam 29 rotates. The power plate 30 is moved via the cam follower 31 that is in contact with it. Here, as mentioned above, cam follower 3
1 is locked approximately midway in the linear return portion of the drive cam 29, so it once falls to the smallest diameter portion of the spiral drive portion, and then the center of the intermittent gear 13 is moved by this spiral drive portion. Move away from the person. Therefore, Cam Follower 3
The power plate 30 integrated with the tape player 1 first moves slightly toward the back of the tape player, and then largely moves toward the front of the tape player.

Therefore, the roller-shaped engaging portion 35 of the L-shaped link 34 connected to the power plate 30 via the L-shaped link 32 and the drive plate 33 is moved over the arc-shaped sliding portion 38 of the lock plate 36 that was initially in contact with the L-shaped link 34. The tape player advances toward the front side of the tape player, and then, as shown in FIG. 7, after engaging with the stepped portion 37, it moves largely toward the back side. As a result, the lock plate 36 is pulled by the roller-like engaging portion 35 and moves toward the inner side. At this time, the switch pressing piece 27 provided on the stopper 21 of the intermittent gear 18 is pressing the closing switch 28, so the suction plunger 72 is already energized, and the suction plunger 72 causes the plunger link 70 to lock onto the locking plate. It is fixed on the 36 side. Therefore, the lock plate 36 is connected to the fixed plunger link 7.
It moves to the back side while being held between the receiving roller 71 of No. 0 and the roller-like engaging portion 35. As the lock plate 36 moves in this way, the loading link 39 connected to the front end of the lock plate 36 moves around its support shaft 3.
9a, the pressing portion 39b formed at the opposite end of the loading link 39 moves the loading plate 40 toward the front.

Loading plate 4 moving toward the front
0, the pulling cam 57 installed in the horizontal part of the inner part is connected to the roller 65 of the stopper arm 58.
is pressed to rotate the tip of the stopper arm 58 to the innermost part of the support frame 2. Due to the rotation of the tip of the stopper arm 58, the cassette that had been manually pushed into the pack guide 1 is pulled into the claw part 9 of the pack stopper 7, and is pulled into the inner part of the pack guide 1 by the driving force of the motor. It will be. When the loading plate 40 moves further toward the front side even after the cassette has been completely retracted, as shown in FIGS.
The guide pin 5 of the support frame 2, which had been sliding on the horizontal portion 56b of the elevating cam 56, reaches the tapered portion 56a of the elevating cam 56. Then, the guide pin 5 descends along the tapered portion 56a, and accordingly, the front end of the support frame 2 rotates downward about the support shaft 3 on the back side. As a result, the pack guide 1 attached to the front side of the support frame 2
descends onto the reel base of the tape player,
Loading of the cassette is now complete.

As shown in FIG. 8, the loading plate 40 that has reached the front side in this manner has a lock arm 4 installed in the stepped portion 43 provided on the horizontal portion 40b.
Because the engagement piece 46 of 5 enters, the spring 4
Even though it is being pulled toward the back by 0d, it is locked in the front position. Therefore, the intermittent gear 18 that has rotated once reaches the stopper 2.
1, the power plate 30 returns to its original position, and the traction force of the roller-like engaging portion 35 on the lock plate 36 is released, and the lock plate 36 and the loading link 39 are fixed to the lock plate 36. spring 36
Even after returning to the original position by the force b, this loading plate 40 remains at the front position, and is pressed by the lifting cam 56 formed on the loading plate 40, so that the pack guide 1 holds the cassette in the installed state. It is.

In addition, during this loading, lock plate 3
6 is also connected to the pulling plate 77. Before the cassette is installed, the loading plate 40 is located at the back side, and the engaging piece 46 of the lock arm 45 is inserted into the stepped portion 43. not present. Therefore, lock arm 45
The tip of the tape player rotates outward, and being pressed by this, the front side of the pull plate 77 also rotates outward, and the elongated hole 79
The engaging pin 81 of the head link 81 inserted therein is located in the linear portion of the elongated hole 79 and does not engage with the engaging portion 80 . Therefore, even if the pulling plate 77 is moved to the inner side by being pulled by the lock plate 36, the head link 81 is not pulled and the head is not pressed.

Head crimping operation...Figures 11 and 12 When the loading of the cassette is completed and the intermittent gear 18 rotates once and the stopper 21 returns to its original position, the power supply switch 28 pressed by the switch pressing piece 27 is turned off. . Therefore, the power supply to the suction plunger 72 from the closing switch 28 side is cut off;
A self-holding switch 75 is connected in parallel with. And this self-holding switch 75
is thrown in by the pressing piece 76 of the plunger link 70 which is sucked by the suction plunger 72. Therefore, even after the closing switch 28 is turned off, the suction plunger 72 is turned on at the same time as the suction starts. The excitation state is continued by the self-holding switch 75.

When the cassette is mounted on the reel base as described above, the head plate 94 is still in the retracted position, and the head 95 is not in contact with the tape T as shown in FIG. Therefore, in this state, since the rotation of the reel base is also stopped, the tape end detection device of the tape player operates and rotates the tape end detection lever 25 about the support shaft 26, as shown in FIGS. I will let you do it.
As a result, this tape end detection lever 25
As a result, the stopper 21 is pressed, the intermittent gear 18 is unlocked, and the power plate 30 is moved again. This movement of the power plate 30 causes the L-shaped link 34 to
The roller-like engaging portion 35 of the locking plate 36
Tow it towards the back side.

By the way, when the cassette is installed, the loading plate 40 moves forward and the lock arm 45 engages with its stepped portion 43, so the tip of the lock arm 45 rotates toward the inside of the tape player. There will be. Therefore, the pull plate 77, which was pressed outward by the lock arm 45 before the cassette was installed, is rotated inward by the force of the spring 78. In this state, when the lock plate 36 moves to the back side and the pull plate 77 moves to the back side accordingly, the engagement portion 80 and the head link 81, which were not engaged during loading, engage with each other. The pin 84 engages with the head link 81, and the head link 81 is pulled by the pulling plate 77 and rotates counterclockwise. As a result, as shown in FIG.
6 moves forward, the head plate 94 connected thereto moves forward, and the head 9 on the head plate moves forward.
5 is pressed against the tape, and the pinch roller 96 on the forward or reverse side is pressed against the capstan shaft 97, so that the tape is in a running state.

When the head link 81 rotates counterclockwise, the lock pin 88 provided at the tip of the head side link 81b moves within the engagement hole 90 of the holding plate 89. and,
The head plate 94 moves forward and the head link 8
After rotation 1 is completed, this lock pin 8
8 engages with a stepped portion 93 provided in the engagement hole 90,
The head link 81 is a spring 8 provided between the head press pin 86 and the tape player.
7 prevents it from returning to its original position. Here, the holding plate 89 is
Torsion spring 91 and stopper 9
2, so that the plunger link 70 is interlocked with the plunger link 70. Therefore, while the plunger link 70 is being sucked by the suction plunger 72, the stepped portion 93 of the holding plate 89 engages the engagement pin 84 of the head link 81. continue to hold it.

In addition, when the engagement pin 84 of the head link 81 is rotated, if the engaging pin 84 rides over the stepped portion 93, the plunger link 70 is rotated by the torsion spring 91 provided between the plunger link 70 and the holding plate 89. Only the holding plate 89 moves slightly outward while remaining in the attracted state, and the engagement pin 84 is able to escape from the stepped portion 93.

Stop operation...Fig. 13 A stop operation that simply stops playing the tape without ejecting the cassette in the play state is performed as follows. That is, when the stop/eject lever 103 is pressed in the play state shown in FIG. 8, the pressing pin 105 provided thereon presses the stop arm 53 toward the back of the tape player.
As a result, the entire eject arm 50 rotates clockwise about its support shaft. Then, the switch pressing piece 52 of the eject arm 50 separates from the power off switch 51, the power off switch 51 is turned off, and the power supply to the motor and the suction plunger 72 is released.

When the power supply to the suction plunger 72 is released,
The plunger link 70 is a roller-like engaging portion 3
5 and rotates counterclockwise. That is, the stopping position of the roller-like engaging part 35 is the stopping position of the cam follower 31 of the power plate 30 which is interlocked with the engaging part 35, and the stopping position of the cam follower 31 of the power plate 30 is in the middle of the linear return part of the drive cam 29. It is located slightly deeper into the tape player than the return position. Therefore, when the plunger link 70 is in the adsorption state,
The lock plate 36 is pulled by the roller-like engaging portion 35 and is stopped at a position slightly toward the back of the tape player. When the attraction plunger 72 is de-energized in this state, the lock plate 36 escapes from the roller-like engagement part 35 because it is held between the roller-like engagement part 35 and the receiving roller 71 of the plunger link. As a result, the plunger link 70 is pressed and rotated counterclockwise. With this counterclockwise rotation of the plunger link 70,
The holding plate 89 interlocked with this also rotates counterclockwise, and the stepped portion 93 and the head link 8
The engagement with the first engagement pin 84 is released. Then, since the head link 81 becomes free, it is rotated clockwise by the spring 87 provided between the head pressing pin 86 and the tape player, and as a result, as shown in FIG.
The entire head plate 94 engaged with the head pressing pin 86 is moved back away from the cassette. In this way, in the stopped state, the head plate 94 is retracted and the head 95 is taken out from the cassette.
The power off switch 51 is turned off and the motor is also stopped. However, in this state, the loading plate 40 is still locked to the front side of the tape player by the engaging piece 46 of the lock arm 45, so the pack guide 1 is held down by the loading plate 40 and is in a lowered state. , the cassette will not be ejected.

Return to play...Figs. 11 and 12 To return from the above-mentioned stop state to the play state, press the play/program change lever 102 shown in Fig. 14. Then, the switching plate 106 interlocked with this moves toward the back, and the stopper 21 of the intermittent gear 18 is removed from the recess 20 by the pressing piece 109 provided at the left end thereof, as shown in FIG. This rotation of the stopper 21 causes the switch pressing piece 27 to press the power-on switch 28, so that the motor is driven and the suction plunger 72 is energized. Here, the power off switch 51 which releases the excitation of the attraction plunger 72 at the time of stopping is operated by the stop/eject lever 103.
As the pushing is released, the eject arm 50 releases the spring 55 as shown in FIG.
The force causes the switch to rotate counterclockwise and return to its original position, so the switch pressing piece 52 no longer presses the off switch 51 and remains on. Therefore, when the power supply switch 28 on the intermittent gear side is closed, the motor is driven and the suction plunger 72 is excited at the same time.
As the motor rotates, the intermittent gear 18 from which the stopper 21 has been disengaged is rotated by the drive gear 17, thereby moving the power plate 30 toward the front and engaging the L-shaped link 34 in a roller-like manner in conjunction with the power plate 30. The joint portion 35 will again pull the lock plate 36 toward the back. Thereafter, the head plate 94 moves forward as shown in FIGS. 11 and 12 in the same way as the head pressing operation described above, and the head presses against the tape T to enter the play state.

Eject operation To eject the cassette from the above-mentioned stop state, once the stop/eject lever 103 has been returned to its original position, the stop/eject lever 103 is pushed in again.
3 press pin 105 is the eject arm 50
will be rotated significantly clockwise.
Then, the lock release pin 49 provided on the eject arm 50 moves inside the elongated hole 48 of the lock arm 45 to the left in the figure and presses the edge thereof, so the lock arm 45 rotates clockwise around the spindle 47. move. As a result, the engagement piece 46 of the lock arm 45 and the stepped portion 43 of the loading plate 40 are disengaged, and the loading plate 40 is moved to the back side before the cassette is inserted by the force of the spring 40d.

As the loading plate 40 moves toward the back, the lifting cam 56 provided on the vertical portion 40a raises the tip of the support frame 2 and lifts the pack guide 1 supported by it from above the reel base. . Subsequently, since the pulling cam 50 provided at the deep horizontal part of the loading plate 40 separates from the roller 65 of the stopper arm 58, the stopper arm 58 moves away from the tow provided between it and the deep frame of the tape player. It moves toward the front side by the force of the spring spring 63. As the tip of the stopper arm 57 moves toward the front, the pack stopper 7 moves toward the front within the guide groove 6, and the cassette is pushed out from within the pack guide 1.

Further, as the stopper arm 58 rotates, the engaging claw 68 provided thereon engages the connecting plate 66.
The eject arm 50 is rotated clockwise by the connecting plate 66 in order to pull the eject arm 50 toward the inner part. Therefore, even after the pressed stop/eject lever 103 returns to its original position and the pressing force on the eject arm 50 is released, the eject arm 50 remains in its rotating state being pulled by the connecting plate 66. The switch pressing piece 52 is separated from the power off switch 51.

Furthermore, when the loading plate 40 retreats to the back side and the engaging piece 46 of the lock arm 45 and the stepped portion 43 are separated, the tip of the lock arm 45 stops at the clockwise rotated position and the head crimping mechanism is pulled. Since the front end of the pulling plate 77 will be pressed outward, the pulling plate 77
Head side link 8 inserted into the long hole 79 of
The first engaging pin 84 is in a position where it does not engage with the engaging portion 80.

[Other Embodiments] The present invention is not limited to the illustrated embodiments, and other embodiments such as those described below can also be adopted.

The roller-like engaging portion is moved directly by the power plate without using the drive plate 33.

A device in which the lock plate is directly moved by the power plate or its drive cam without using a roller-like engagement part.

In this case, since the lock plate is always connected to the power plate, etc., the suction plunger and plunger link function merely as means for holding the head in the forward position. Therefore, it is no longer necessary to hold down the lock pin 88 by the holding plate 89 to secure the head plate in the forward position, and the head plate itself may be held at another location by the suction plunger.

However, as a means for separating the plunger link from the self-retaining switch, in the illustrated embodiment, a locking plate pushed by a roller-like engagement part pushes the self-plunger link, so that when such a roller-like engagement part is removed, , the lock plate prevents the plunger link and self-holding switch from being released. Therefore, I pressed the stop lever,
Rotate the plunger link using the eject arm to turn off the self-holding switch,
After the power off switch is turned off, a suction suction plunger may be used to separate the plunger link and the self-holding switch using a spring that acts in the opposite direction to the suction direction.

The loading mechanism is loading link 3
The loading plate 40 is directly moved by the lock plate without using the mechanism 9.

The lock arm that locks the loading mechanism is integrated with the eject arm, and the lock arm and loading mechanism (loading plate) do not disengage even if the eject arm and (lock arm) rotate slightly when stopping. , which is designed to disengage when it is rotated significantly during ejection.

The head crimping mechanism directly advances the head plate using a tapered cam formed on the edge or surface of the pulling plate.

The head link of the head crimping mechanism is made of one piece, and by connecting the head press pin and the head plate with a means that can absorb displacement, the head plate moves slightly relative to the head link when the head link is fixed by the holding plate. What you can do.

A plunger link that directly holds the head link or head plate without using a holding plate to hold the head in the crimping position.

The power-on switch remains on continuously from the time the cassette is inserted until the ejection is completed. In this case, a self-holding switch for the suction plunger is not required, but the power off switch must remain off during the stop state.

[Effects of the Invention] As described above, according to the driving force switching mechanism of the present invention, the head crimping mechanism and the pulling plate are connected and disconnected depending on the state of the lock arm that locks the loading mechanism at the cassette mounting position. Although this is a simple configuration, it is possible to perform loading by the first movement of the same drive source, and to perform crimping of the head by the second movement. As a result, the loading ejection of the cassette,
It is now possible to separate the crimping and retracting of the head, and there are tape players that have a stop mode that does not eject the cassette. It becomes possible to provide a tape player that is free from accidents.

[Brief explanation of drawings]

Fig. 1 is a plan view of the pack guide portion in an embodiment of the driving force switching mechanism of the present invention, Fig. 2 is a plan view of the drive mechanism portion when it is stopped, Fig. 3 is a plan view when it is in operation, and Fig. 4. 5 is a plan view of the tape end detection lever portion when it is stopped, and FIG. 5 is a plan view when it is in operation. Figures 6 to 8 are plan views of the loading mechanism, with Figure 6 before operation and Figure 7 during operation.
Figure 8 is a state in which loading is completed, Figure 9 is a side view of the elevating cam portion of the support frame when it is ejected, and Figure 10 is
The figure shows a side view upon completion of loading. 11th
The figure is a plan view of the head crimping mechanism before operation.
2 is a plan view when the head crimping is completed, FIG. 13 is a plan view in the stopped state, and FIG. 14 is a plan view of each operating lever in this embodiment. 1... Pack guide, 17... Drive gear, 18
... Intermittent gear, 21 ... Stopper, 25 ... Tape end detection lever, 27 ... Switch pressing piece, 28 ... Power on switch, 30 ... Power plate, 35 ... Roller-shaped engagement part, 36 ...
Lock plate, 39...Loading link, 40...
... Loading plate, 45 ... Lock arm, 50 ... Eject arm, 51 ... Power off switch, 56 ... Lifting cam, 58 ... Stopper arm, 66 ... Connection plate, 70 ... Plunger link, 71 ... ...Receiving roller, 72...Adsorption plunger, 75...Self-holding switch, 77...
... Pulling plate, 81 ... Head link, 86 ... Head plate pressing pin, 89 ... Holding plate,
94...Head plate, 95...Head, 10
2...Play and channel change lever, 10
3... Stop and abuse lever.

Claims (1)

[Scope of Claims] 1. A lock plate 36 that reciprocates intermittently with a constant stroke due to the driving force of a motor; A loading mechanism that moves the cassette from an unloaded position to a loaded position, and a lock arm 4 that moves between a locked position and an unlocked position and locks the loading mechanism in the cassette loaded position in the locked position.
5, a pulling plate 77 that interlocks with the lock plate 36, and a pulling plate 77 that is provided on the pulling plate 77 so that when the pulling plate 77 moves in the forward direction, the lock arm 45
The engagement portion 80 of the pulling plate 77 disengages from the head crimping mechanism when the head is in the unlocked position, and engages with the head crimping mechanism when the head crimping mechanism is in the locked position. At the time,
Driving force for a tape player characterized by comprising: a head crimping mechanism that moves the head from a retracted position to a crimping position in conjunction with a pulling plate 77; and a holding means that holds the head crimping mechanism at the head crimping position. Switching mechanism. 2. The lock plate 36 is connected to the power plate 30, and the cam follower 31 provided on the power plate 30 is driven by a drive cam 29 which is intermittently rotated by the driving force of a motor.
Driving force switching mechanism for the tape player described in Section 2. 3 The locking plate 36 and the power plate 30 are connected to the roller-like engagement portion 3 that interlocks with the power plate 30.
3. The driving force switching mechanism for a tape player according to claim 2, wherein the drive force switching mechanism for a tape player is interlocked by engagement of the step portion 37 of the lock plate 36. 4. The loading mechanism is rotated by a loading link 39 that interlocks with the lock plate 36, a loading plate 40 that is moved by the loading link 39, and a pulling cam 57 formed on the loading plate 40. A driving force switching mechanism for a tape player according to claim 1, comprising a stopper arm 53 and a pack guide 1 that is raised and lowered by a lifting cam 56 formed on a loading plate 40. 5 Lock arm 4 that locks the loading mechanism
5. The drive force switching mechanism for a tape player according to claim 1, wherein the eject arm 50 is interlocked with the push-in of the eject operating lever to release the loading mechanism. 6 A patent in which the head crimping mechanism includes a head link 81 that interlocks with the pulling plate 77, a head plate pressing pin 86 provided on the head link 81, and a head plate 94 that engages with the head plate pressing pin 86. A driving force switching mechanism for a tape player according to claim 1. 7 Head link 81 interlocking with pull plate 77
However, the engagement pin 84 on the head link 81 side is inserted into the elongated hole 79 formed in the pulling plate 77, and the engagement pin 84 engages with the elongated hole 79 when the lock arm 45 is in the mounting position. 7. The driving force switching mechanism for a tape player according to claim 6, wherein a joint portion 80 is provided. 8 The means for holding the head in the crimping position is a suction plunger 72 that is energized when the cassette is installed.
The driving force of the tape player according to claim 1 or 7, which comprises: a plunger link 70 that is suction-fixed by this suction plunger 72; and a holding plate 89 that interlocks with this plunger link 70. Switching mechanism. 9. The driving force switching mechanism for a tape player according to claim 8, wherein the holding plate 89 has a stepped portion 93 that engages with a lock pin 88 provided on the head link 81 when the head is crimped. 10 The suction plunger 72 is excited by the power-on switch 28 when the cassette is inserted, and continues to be energized even after the power-on switch 28 is turned off by the self-holding switch 75 that is turned on by the suction operation of the plunger link 70. A driving force switching mechanism for a tape player according to claim 7 or 8. 11. The driving force of the tape player according to claim 10, wherein the suction plunger 72 is turned on when a cassette is inserted, and is deenergized by the power off switch 51, which is turned off when the stop lever 103 is pushed. Switching mechanism.