JPS58189863A - Tape recorder - Google Patents

Abstract

PURPOSE:To prevent a pressing plate from being returned even if the returning force is exerted on the plate, by driving a cassette pressing plate via a worm gear, and falling down a cassette on a reel stand, in loading the cassette. CONSTITUTION:The cassette A depresses a feeding roller 23 and a switch 25 is closed. Power is applied to a solenoid 5 and a gear 9 is meshed with a gear 13. Further, a reel driving motor 3 is also driven, the roller 23 is rotated with gears 33, 9, 13, a worm gear 12, a gear 15, a belt 16 and gears 17, 24, and the cassette A is carried. The cassette A contacts with a stopper 31a, and the control plate 31 is slid. Since the gear 15 is rotated counterclockwise and the plate 31 is pressed down, a pressing plate 27 is rotated around a shaft 26 counterclockwise. Thus, the cassette A is pressed down against a force of a spring 30 with a pressing plate 28 and a hub is inserted to reel stands 39 and 40.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette, particularly a microcassette, and a tape recorder in which the microcassette can be automatically loaded.

Conventionally, in this type of tape recorder, as a means for automatically pulling the cassette into the tape recorder, a claw body provided on the tape recorder side is hooked onto the window of the cassette whose tip is inserted into the insertion hole. At the same time, the claw body is moved inward by a motor or other power, thereby pulling the cassette onto the reel stand, and then the pusher plate located on the top surface of the cassette is lowered using a driving source such as a plunger, Fit the cassette hub onto the reel stand to finish loading. Further, ejecting the cassette is performed by an operation opposite to that of loading described above.

Still another method is one in which a carrier in which the cassette is stored is installed in the tape recorder, and the carrier is moved in the same manner as described above to load or inject the cassette and throat into the tape recorder. However, in any of the above-mentioned automatic loading means, the claw body or the carrier must be moved a considerable distance, which makes it difficult to downsize the automatic loading device, and the tape recorder itself has to be large. At the same time, devices using carriers using the latter method also have a large number of parts.
This was disadvantageous in terms of workability and cost.

The present invention has been made in view of the above points, and the cassette inserted from the cassette insertion port is lowered onto the reel table by driving the cassette pressing plate via a worm gear. To provide a tape recorder in which a push-down plate 2 is prevented from being returned by a worm gear even if a restoring force is applied to the push-down plate.

Next, embodiments will be described with reference to the drawings.

1 is the first chassis (hereinafter simply referred to as chassis), 2 to 4
is a capstan motor attached to the chassis 1,
A reel drive motor and a mechanical control motor are connected to the chassis 1 via a motor mounting plate 3'.
installed on.

5 is a solenoid attached to the chassis 1; 6 has a fan-shaped tooth portion 6a at one end; a connecting portion 6b connected to the suction rod 5a of the solenoid 5 at the other end; and an intermediate portion is pivotally supported on the chassis 1. The first sector gear 7 has one end connected to the first sector gear 7.
A fan-shaped tooth portion 7a that meshes with the tooth portion 6a of the fan-shaped gear 6 is
A second sector gear having a connecting portion 7b connected to a pin 8a of a link 8, which will be described later, is formed at the other end, and whose intermediate portion is pivotally supported on the first chassis 1; 1
It is an L-shaped link that is pivotally supported at the other end of the link, and a large gear 9 and a small gear 10, which are two-stage gears, are pivotally supported at the other end. The large gear 10 is located on the back surface of the chassis 1, and the small gear 9 protrudes from the hole 1b of the chassis 1 toward the second surface. 1
1 is a spring whose helical portion is fitted into the bearing portion of the link 8, and one end is connected to the link 8 and the other end is connected to the motor mounting plate 3.
The locking piece 3'a is engaged with a locking piece 3'a formed at the top of the link 8, and urges the link 8 in the counterclockwise direction. Therefore, the rotational force is applied to the second sector gear 7 in the clockwise direction, and the rotation force is applied to the second sector gear 6 in the counterclockwise direction. As a result, the suction rod 5a of the solenoid F5 is in an extended state.

A worm gear 12 is pivotally supported by a pin 1c of the chassis l, and a spur gear 13 is integrally formed at the lower end of the worm gear. Then, when the solenoid 5 described above is energized and the link 8 is rotated, the small gear 9 and the spur gear 13 are brought into mesh with each other. , 14 is an auxiliary chassis fixed to the shear 1, - a gear 1 meshed with the worm gear 12 described above;
5 is pivotally supported. Auxiliary chassis 1 of this gear 15
A pulley 16 is integrally formed on 4fil+, and four protrusions 15a are formed on the 611 side.

Numeral 17 is also a gear pivotally supported by the auxiliary chassis 14, and a pulley 18 is also integrally formed on the auxiliary chassis 14 side, and a heald 19 is wound between this pulley 18 and the above-mentioned pulley 16. There is. Reference numeral 20 denotes a rotary member 7-m rotatably supported by the auxiliary chassis 14, to which rotational force in the counterclockwise direction J is constantly applied by a coil spring 21.

The projecting piece 20a of the rotating arm 20 is attached to the auxiliary chassis 14.
The bent piece 14a is in contact with the bent piece 14a. 22 is a switch operating rod fixed in the middle of the above-mentioned rotating arm 20,
When the rotating member 20 is rotated clockwise to some extent against the spring force of the spring 21, a switch to be described later is operated. A cassette feed roller 23 is pivotally supported at the tip of the rotating arm 20, and a gear 24 is integrally formed on the side of the auxiliary chassis 14, and is meshed with the gear 18 marked 1-.

25 is the switch 7 attached to the sawmill 1, insert the cassette A, and the tip of the cassette A is connected to the feed roller 23.
When the rotating arm 20 is rotated clockwise against the spring 21, the switch operating rod 22 is closed and the solenoid 5 and reel drive motor 3 are energized.

Reference numeral 26 denotes a shaft stretched between the auxiliary chassis 14 and a protrusion 3'b formed on the mounting plate 3' of the reel stand driving motor 3, and the press plate 27 and the press plate 2B are connected to the shaft. supported. The pusher 27 and the pushers 1 & 28 are provided facing each other, and are located at the entrance path of the cassette A fed by the feed roller 23. Press Fj
, 27 and the protruding piece 14b of the auxiliary chassis. A stopper 27b formed at the tip of the push-down plate 27 is connected to the auxiliary shear 14.
The protruding piece 14c is in contact with the protruding piece 14c. On the other hand, the push-up plate 28 is also spring-biased clockwise by a coiled spring 30 inserted through the shaft 26. A stopper 283 formed at the rear of the push-up plate 28 comes into contact with the chassis 1, thereby regulating the position. One end of the coil spring 30 is secured to a locking piece 3'c formed on the motor mounting plate 3', and the other end is locked to a stopper 28a. In this state, the cassette A sent by the feed roller 23 enters the push-down plate 27 and the push-up plate 28 between both sides. Reference numeral 31 denotes a slide control plate 7 that is slidably attached to the side surface of the press plate 27, and is always urged forward (to the left in the figure) by a spring 32 stretched between the two. Further, at the rear end of this slide control plate 31, there is formed a stopper 31a against which the leading end of the cassette A that enters comes into contact, and an engaging protrusion 31b that engages with the protrusion 15a of the gear 15 described above. . The stopper 31a of the slide control plate 31 is inserted between the push-down plate 27 and the push-up plate 28. On the other hand, a gear 33 is attached to the output shaft of the reel drive motor.
and the above-mentioned large gear lO are then meshed on the lower surface of the steering wheel I.

When the cassette A is inserted in FIG. 4, the tip of the cassette A comes into contact with the feed roller 23, and the rotating arm
Since gear 0 rotates counterclockwise against the spring force, gear 2
4 and 18 are engaged, and the switch operating rod 23 presses the switch 25 to close its contact. As a result, the solenoid 5 and the reel drive motor 3 are energized, the suction rod 5a of the solenoid 5 is attracted, and the gear 33 is rotated. When the suction rod 5a is attracted, the arm 8 is rotated clockwise via the sector gears 6 and 7 against the spring force, so that the small gear 9 is meshed with the spur gear 13.

Note that at this time, the gear 33 and the large gear IO remain meshed. Therefore, the rotational force of the gear 33 is transmitted to the worm gear via the large gear 10 and the spur gear 13, thereby rotating the gear 15. When the gear 15 is rotated, the heald 1
The gear 17 is rotated via the gear 9, and therefore the feed roller 23 is rotated in the direction of movement of the cassette A via the gear 24. As a result, the cassette A enters between the push-up plates 27 and 28 due to friction with the feed roller 23. The tip of the cassette △ is the stopper 313 of the slide control plate 31.
When the slide control plate 31 comes into contact with the spring 32
The locking protrusion 31b engages with the protrusion 15a of the gear 15.

As a result, the rotational force of the gear 15 is transferred to the protrusion 15a and the engagement protrusion 3.
1b to rotate the slide control plate 31 counterclockwise, the slide control plate 31 is attached and the push-down plate 27 is rotated counterclockwise about the shaft 26 as a fulcrum. Therefore, the push-up plate 2 is also rotated counterclockwise via the cassette A, and the cassette I-A is lowered and engaged with a reel stand, which will be described later. That is, cassette A is set in the tape recorder. In this state, a switch not shown in the figure operates to cut off the power to the solenoid 5. Therefore, the link 8 is rotated counterclockwise by the spring force of the spring II, so that the sector gears 6 and 7 return to their original states, and the large gear 10 meshes with an intermediate gear 34, which will be described later. Further, at this time, the power supply to the reel drive motor 3 is also temporarily cut off, and the supply of electricity to the reel drive motor 3 is stopped until the next tti instruction.

Reference numeral 34 denotes an intermediate gear that meshes with the above-mentioned large gear IO, and both gears IO and 34 mesh when the solenoid 5 is not energized. 35 is the gear 2 meshed with the intermediate gear 34.
A small gear 36 is integrally formed as a stepped large gear. The small gear 36 protrudes from the hole 1d of the chassis l. Reference numeral 37 denotes a swing arm whose one end is pivotally supported by the shear l, and teeth 438 which are in mesh with the above-mentioned small gear 36 are pivotally supported on the back surface of the tip. 39.40 is a gear 39a that selectively meshes with the gear 38 described above.
, 40a are formed on the reel stand.

When the reel drive motor 3 is driven with the solenoid 5 in a de-energized state and the large gear 10 attached to the arm 8 meshing with the intermediate gear 34, the gear 33, the large gear 10, the intermediate gear 34, A gear 38 pivotally supported by a swing arm 37 is rotated via a large gear 35 and a small gear 36. At this time, the swing arm 37 rotates depending on the rotation direction of the pinion 36.
The friction of the gears 36 and 38 causes it to swing left and right in FIG. Therefore, the gear 38 is meshed with one of the gears 39a, 40a of the reel stand 39, 40. Zunawachi゛pinion 3
6 rotates clockwise, the gear 38 moves counterclockwise. At this time, the swinging arm 37 swings clockwise, causing the gear 38 to mesh with the teeth t40a of the reel stand 40. Furthermore, when the small gear 36 rotates counterclockwise, the gear 38 meshes with the gear 39a of the reel stand 39. Therefore, depending on the direction of rotation of the reel drive motor 3, either the reel stand 39 or 40 rotates. It is.

41. 42 is a flywheel that is pivotally supported on the back surface of Sharn l, and its rotating shaft is connected to the capstan shafts 41a-, 4.
2a and protrudes from the upper surface of the chassis 1. 43
is a pulley fixed to the output shaft of the capstan motor 2, and this pulley 43 and the above flywheel 41
．． A heald 44 is wound between 42 and 42. Therefore, by driving the capstan motor 2, the capstan shafts 41a and 42a are rotated.

Reference numerals 45 and 46 designate pinch roller units, and a pair of pinch roller units are arranged facing the capstan shafts 41a and 42a described above. The pinch roller unit 45 on the right side will be described below, but the pinch roller unit 46 on the left side has the same alpha vent as the pinch roller unit 45 on the right side, indicating the same member. The pinch roller unit 45 includes a base 45a made of synthetic resin, a reproducing magnetic head 45b fixed to the base 45a, and a support frame 45d that pivotally supports the pinch roller 45C. More specifically, the base 45a has a cassette A.
A tape guide 45e is integrally formed facing the central window of the head 45b to prevent upward movement of the tape.
A mounting post 45f is formed. Then, one end of the door 45b is screwed to the post 45f of the base 45a, and the other end is screwed to the post 45h via the spring 45g.
It is secured with screws. The purpose of using the spring 45g is to adjust the azimuth of the head 45b, which can be done by turning the screw 45h. Also, the support frame 45
A hole 45i for a mounting pin is formed in the center of d,
The pin 45j is inserted through the pin 45j, and its lower end is fitted and fixed into the hole 1e of the chassis 1. A spring 45k is inserted through this pin 45j, and one end is locked to the base end of the support frame 45d, and the other end is locked to the protruding piece 45J of the base 45a. Therefore, the support frame 45d is urged counterclockwise by the spring 45k, and the base end of the support frame 45d abuts against the stopper 45m of the base 45d. Furthermore, 45
n is a tape guide attached to the head 4.5b. Reference numeral 47 designates a triangular stopper made of synthetic resin provided approximately midway between the reel stand 39, 40 and the pinch roller unit 45, 46 to restrict rotation of the bases 45a, 46a. That is, the base 45 is
When the pins 45j and 46a rotate about the pins 45j and 46j, the bases 45a and 46a come into contact with the triangular bottom corners of the stopper 47, and their rotation is restricted.

48 is a fully toothed gear with teeth formed on the outer periphery of the upper surface,
It meshes with a gear 49 fixed to the output shaft of the mechanical control gear 4. 50 is a small gear integrally formed with the full toothed gear 48; 51 is a large gear meshed with the gear 50; 52 is a small gear integrally formed with the large gear 51; 53 is the small gear 52. The large gear 54 meshed with the large gear 53 is a small gear integrally formed with the large gear 53, and the small gear 54 projects from the upper surface of a hole 55C of a second chassis 55, which will be described later.

Reference numeral 55 designates a second chassis screwed to three support columns 1f planted on the chassis 1, and includes a cassette guide portion 55a that constitutes an insertion portion into the cassette, and members for attaching various members described later. It is composed of a mounting portion 55b. A hole 55c is formed in the member attachment portion 55b, and a gear 56 that meshes with the small gear 54 protruding from the hole 55C is attached. A guide protrusion 56a is integrally formed at an eccentric position on the upper surface of the gear 56. Further, a swing plate 57 is pivotally supported on the member attachment portion 55b, and a cutout portion 57a formed in a portion thereof is engaged with a guide protrusion 56a of the gear 56 described above. 58.59
are elongated holes 58a, 58b and 59 formed near both ends of three protrusions 55d implanted in the second chassis 55, respectively.
A, 59b are inserted into the sliding control plates, and springs 60, 61 are stretched between the protrusions 55d at both ends and the respective protrusions 58c, 59c.
and 59 are biased in opposite directions.

Further, the opposing ends of the control plates 58 and 59 are formed with hooks 58d and 59d that engage with the protrusions 57b provided at the ends of the rocking plate 57 marked 1. When the swing plate 57 is rotated counterclockwise, the control plate 58 is moved to the left in FIG. 3 against the spring force of the splinter 60, and the gear 56 is rotated clockwise. This is to move the control plate 59 to the right against the force of the spring 61 when it is pressed. In addition, the support frames 45 of the pinch roller units 45 and 46 mentioned above are connected to the projecting pieces 58e and 59e formed on the control plates 58 and 59.
Spring 62, 63 is stretched between protrusions 450, 460 formed on protrusions 45o, 46d, and protrusions 45o, 46d.
6o are in contact with shoulders 58f and 59f of control plates 58 and 59, respectively. Therefore, the support frame 45d is urged in the direction of the hour hand by the spring force of the spring 62 with the bottle 45'' as a fulcrum, and the protrusion >''+145 o is pushed toward the shoulder 581 of the control plate 58.
The position is regulated by coming into contact with the When the control plate 58 slides against the spring force of the spring 60 as shown in FIG. The rotational force in the clockwise direction is applied, and the base 45a
is rotated until it comes into contact with the stopper 47. In this state, the pinch roller unit 45c is attached to the capstan shaft 41.
45 b is tape A.
1 is in sliding contact.

Then, even after the ζ support frame 45d contacts the stopper 47, the control plate 5B moves further, so the support frame 45d is rotated clockwise by the spring force of the spring 62, using the pin 45 as a fulcrum. The pinch roller 45c is rotated against the force, so that the pinch roller 45c is pressed against the capstan shaft 41a by the difference between the spring force of the spring 45 and the spring 62.

On the other hand, when the control plate 59 slides, the base 46a is rotated in the counterclockwise direction by the same operation as described above, the head 46b is brought into sliding contact with the tape A+, and the pinch roller 46c is moved against the spring 46 and the spring 63. The capstan shaft 42a is pressed against the capstan shaft 42a by the force due to the difference between the spring force and the spring force.

Note that long holes 58a and 59a formed in the control plates 58 and 59
There is an adjustment hole 58g that communicates this.

59g are formed, respectively, and when the control plates 58 and 59 slide, the heads of the azimuth adjustment screws 45h and 46h and the adjustment holes 58g and 59g coincide with each other. Therefore, the azimuth of the head 45b or 46b can be adjusted in this state.

In addition, a mounting plate 3' to which a reel drive motor 3 is attached is also provided.
One end of each of the two springs 11 and 30 is engaged with the mounting plate 3', and the spring force acts on the mounting plate 3' in one direction (counterclockwise in Fig. 2). It is difficult for the screws to loosen, so motor 3 is moved to shank 1.
It can be firmly fixed against the

Furthermore, in this embodiment, the pinch roller unit 45
．． 46 is incorporated into the second chassis 55,
The pinch roller units 45 and 46 can be controlled by screwing this second chassis 55 into the first chassis I, so the two devices can be assembled separately, making assembly work easier. It's easy to do.

Next, the operation will be explained based on the configuration described above.

As shown in FIG.
The tip of the switch contacts the feed roller 23 and pushes it down, so the rotating arm 20 is rotated clockwise against the spring force of the spring 21, and the switch operating rod 22 presses the switch 25 to close it. .

When the switch 25 is closed, the solenoid 5 is energized, so the link 8 is rotated through the sector gears 6 and 7 against the spring force of the spring 11, and the pinion 9 is meshed with the gear I3. Ru. Further, since the reel drive motor 3 is driven by the switch 25 being closed, the gear 33 is rotated, and the worm gear 12 is rotated via the small gear 9 and the gear 13 described above. Therefore, teeth divided by 15 are rotated, and gear 17.24 is rotated via heald 16. As a result, the feed roller 23 rotates to move the cassette A to the feed [
It is sent inward by friction with the l-ra 23. Then, the cassette A advances and the stopper 31 of the slide control plate 31
a and slides the slide control plate 31 against the spring force of the spring 32, the slide control plate 3
1, the engaging protrusion 31b is engaged with any one of the protrusions 15a of the gear 15 (FIG. 6). Since the gear 15 is rotating counterclockwise, it pushes down the slide control plate 31, so the push-down plate 27 to which the slide control plate 31 is attached rotates counterclockwise about the shaft 26. be done. (Cassette A is pushed down together with the push plate 28 against the spring force of the coiled spring 30, and the edges of the cassette A are fitted into the reel stands 39 and 40. At this time, the feed roller 23 is also pushed down. Because it is possible to
The gears 24 and 17 are disengaged, and the feed roller 23 therefore stops rotating (FIG. 7).

Then, at the same time that the ζ and 7-node Δ finishes descending, a switch (not shown) is operated to cut off the power to the solenoid 5 and the reel drive motor 3, and also to cut off the power to the capstan motor 2.
energizes the flywheel 41.4 via the heald 44.
Rotate 2. Therefore, the capstan shafts 41a and 42a are rotated.

On the other hand, the mechanical control motor 4 is energized by a predetermined command or by a selection operation. Now gear 5
Assume that the mechanical control motor 4 is energized so that the mechanical control motor 6 rotates counterclockwise. In other words, a command is issued to perform playback in the forward direction (tape running direction is to the left).
Alternatively, when operated, the swing plate 57 is driven counterclockwise as shown in FIG. 7, and the control plate 58 is moved to the left by the protrusion 57b against the spring force of the spring 60.

As the control plate 58 moves, the pinch roller unit 4
The base 45a of No. 5 is rotated clockwise about the bin 45j by the spring force of the spring 62, and comes into contact with the stopper 47 and stops.

At the same time, the tape guide 4 provided on the tape A+ is brought into sliding contact with the tape A+.
5n and a tape guide 1" 45e inserted into the central window of case no. The pinch roller 45C is rotated clockwise by the force of the difference between the spring forces of the springs 45 and 62, and the pinch roller 45C pinches the tape A+ and is pressed against the cat's stand 41a.

In the second state, the reel drive motor 3 is energized again, but at this time, the large gear 10 and the intermediate gear 34 are meshed, so the rotation of the reel drive motor 3 is controlled by the gear 33.
, the large gear 10, the intermediate gear 34, and the large gear 35. When the large gear 35 rotates, the small gear 36 rotates, so rotation is transmitted to the gear 38. At this time, the reel drive motor 3 is driving the gear 38 to rotate counterclockwise. The gear 38 rotates the swinging arm 37 counterclockwise while rotating counterclockwise. Therefore gear 3
8 and the gear 39a of the reel stand 39 are meshed, and the reel stand 3
Rotate 9 counterclockwise and tape.

Wind up.

The above is the operation from loading cassette A into the tape recorder until playback. Now, the operation of detecting a song interval on the tape while fast forwarding with I and Z during playback will be explained.

In this case, when a switch (not shown) for detecting a song interval is operated, the mechanical control motor 4 is rotated again in the opposite direction to that described above. The amount of rotation is determined, for example, by optically detecting the number of rotations of a gear provided on the output shaft of the mechanical control motor 4, and the head 45b remains in sliding contact with the tape A1, and the pinch roller 45b is rotated on the capstan shaft 41a. It should be further away.

That is, when the mechanical control motor 4 reverses, the gear 56
is rotated slightly clockwise, the control plate 58 is moved to the right by the spring force of the spring 60, and the base 45a is slightly rotated counterclockwise. As a result, the pinch roller 45c is separated from the capstan shaft 4]a, and the head 45b is brought into sliding contact with the cape A1, as shown in FIG. and head 45b
When detecting the interval between songs, the mechanical control motor 4 is energized again, and the above-mentioned reproduction state is established.

In addition, for fast forwarding and rewinding, the mechanical control motor 4
By rotating the control board 58 in the opposite direction and returning the control plate 58 to its original position, the head 45b moves from the tape A1 to the pinch roller 45.
Since point c is separated from the capstan' shaft 41a, this can be done by iF rotation or reverse rotation of the reel drive motor 3.

Note that the operation explanation described in 1- is for forward direction regeneration, but for reverse direction regeneration, capstan motor 2,
The mechanical control motor 4 and the reel drive motor 3 may be reversely rotated, and the operation thereof is similar to the above-mentioned explanation of the forward direction operation, so a description thereof will be omitted.

Next, the ejecting operation of cassette A will be explained.

When A is fitted into the reel base 39, 40, the protrusion 15a of the gear 15 and the engagement protrusion 31b remain engaged, and the gear 5 is not rotated. . In this state, the spring 2 is attached to the gear 15.
9. A clockwise rotational force is applied by the coil spring 30, but
Since the gear 15 is meshed with the ohm southeast 12,
There is no rotation. To eject, the solenoid 5 is energized again to engage the gear 9 with the gear 13, and the reel drive motor 3 is driven in the opposite direction to the above. As a result, the gear 15 is rotated clockwise, so that the push-up plate 28 and the push-down plate 27 are pushed up by the spring force of the spring 29, the coil spring 30, and the protrusion 15a of the gear 15. When the cassette A is pushed up, the feed roller 23 rises again and the gears 24 and 17 are engaged, so the feed roller 23 is now rotated in the opposite direction to feed the cassette A. Then, by removing one cassette A, the switch operating rod 22 is moved away from the switch 25, and the switch 25 is opened and all operations are stopped.

As described in 1-1, the present invention allows the cassette inserted into the cassette insertion portion to be lowered by the push-down plate against the spring force and placed on the reel stand, and the driving force of the push-down plate is applied via the worm gear. By doing so, even if the rotational force is removed after the cassette is loaded into the tape recorder and a return force is applied to the push-down plate by the spring force, the worm gear prevents the push-down from returning. Therefore, it is not necessary to use any other parts to stop the return of the push-down plate, and it is possible to manufacture a product with a simple structure and low cost.

[Brief explanation of the drawing]

The figures show an embodiment of a tape recorder, in which Figure 1 is an exploded perspective view, Figure 2 is a plan view with the second chassis removed,
Figure 3 is a plan view of the second soyash, Figure 4 is the IV of Figure 2.
-IV line sectional view, Figure 5 is a sectional view of the main part showing the same as above just before the cassette is inserted, Figure 6 is a sectional view of the main part showing the state where the cassette is further inserted than the above, and Figure 7 is a sectional view of the main part showing the state where the cassette is inserted further than the above. FIG. 8 is a plan view of the second chassis showing the loaded state, FIG. 9 is a plan view of the second chassis showing the song interval detection state. Patent Applicant Pioneer Corporation Figure 3] Procedural Amendment (Method) % Formula % 1, Middle Matter No. 15 Showa 5T-1 Application for Permanence No. 072
813 No. 2 Title of the invention f -7' 7
:ff -#'3, supplementary if- person j1i'(-1; Special, '1 Applicant it:
r97 1-4-1 Meguro, Memu-ku, Tokyo Name tag, U (501) Bioneer Co., Ltd. 4 agent

Claims (1)

[Claims] When the cassette is inserted into the cassette insertion part, the cassette is lowered against the spring force and the hub of the cassette is fitted into the reel stand. A push-down plate, a gear mechanism that drives the push-down plate, and a gear mechanism that mesh with the gear mechanism. A worm gear rotated by a motor, and a worm gear meshed with the gear mechanism, which attempts to return to the original position by the spring force of the push-down plate.
Da.