JPS60109047A - Cartridge type tape recorder - Google Patents

Abstract

PURPOSE:To switch reproducing operation and rapid traverse operation to each other easily by providing a cartridge loading part with a movable head substrate, and mounting a head, capstan, flywheel, and motor on the head substrate. CONSTITUTION:A chassis 2 and the head substrate 9 are so constituted that the head substrate 9 is rotatable around a fulcrum 10 of rotation, and the head 11, capstan 12 for reproduction, flywheel 14, motor 15, etc., are mounted on the head substrate 9; and the head substrate 9 is rotated clockwise with the force of a spring 17 in a reproduction state and the capstan 12 for reproduction abuts on the pinch roller 29 to drive a tape. When the reproduction state is switched to a rapid traverse state, a plunger 36 is powered on for a short time to rotate the whole head substrate 9 around the fulcrum 10 of rotation counterclockwise to separate the capstan 12 for reproduction from the pinch roller 29, and a rapid traverse roller 31 is pressed against the pinch roller 29 to transmit a rapid traverse driving force.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cartridge type tape recorder equipped with a fast forwarding device.

Conventional Structure and Problems Endless tape cartridges are widely used in karaoke, BGM performances, etc. because one operation can be performed extremely easily. However, because of the functional drawback of not being able to rewind, fast-forward devices have been devised to quickly find the beginning of a song. A conventional example of a fast forwarding device for this cartridge type tape recorder is shown in FIGS. 1 and 2.

FIG. 1 shows an example in which a playback device and a fast-forward device are provided separately. In this case, many parts such as motors and circuit boards are required. There are also two cartridge insertion slots, which takes up a large amount of space on the panel surface. One operational problem is that when you insert the cartridge into the playback cartridge insertion slot and press the playback button, you are already in the middle of a song and want to fast-forward.
Pull out the cartridge - this time, insert the cartridge into the fast-forward cartridge insertion slot B again, locate the beginning, and then insert the cartridge into the playback cartridge insertion slot A again, making it a tedious task to insert and remove the cartridge. there were.

Next, as shown in Fig. 2, fast forwarding and playback are performed in one insertion slot, but fast forwarding υ is performed by increasing the rotational speed of the motor using the same drive method used during playback. It is something.

In this case, the limit is that the fast-forward speed can be raised to about 2 to 4 times the speed of playback, and there is a drawback that it takes a long time to bring up one track. Additionally, since the tape is basically pulled at 2 to 4 times the speed while it is being played, the tape and head wear quickly, and there is a risk of damaging the tape and head. In addition, the increased load caused by the head and sensing ball and the high speed rotation of the motor caused an increase in the current value. For this reason, an expensive motor with high torque and two speeds was required. In addition, conventional cartridge insertion involves pushing the guide hole of the cartridge until the pinch roller is pressed against the capstan fixed to the chassis, which tends to apply shock to the capstan and pinch roller, which are the most important parts of the drive system.
In addition, since the ball is receiving the ball at one point, it tends to cause side-to-side wobbling, which has the disadvantage that the head touch tends to change easily.

Purpose of the Invention The present invention is a cartridge type in which playback and fast forwarding can be performed in one cart IJ 7 insertion slot, and switching between playback and fast forwarding can be easily performed, and the start-up speed changes little when switching. The purpose is to provide a tape recorder.

Structure of the Invention In the present invention, a movable head substrate is provided with respect to a fixed substrate into which a cartridge is inserted.By placing the head, capstan, flywheel, and motor on the head substrate, it is possible to switch between playback and fast forwarding. The purpose of this is to realize a configuration in which the process can be carried out smoothly.

DESCRIPTION OF EMBODIMENTS FIGS. 3 to 12 show embodiments of the present invention. FIGS. 3 and 4 are a plan view and a side view of the main parts showing the reproduction state of the embodiment. In FIG. 3, the cartridge 1 is placed between the chassis 2 and the tape guide plate 3 on the surface of the chassis 2.
When the cartridge is inserted along the guide roller 4 provided between the two, the position of the cartridge 1 is regulated by the cartridge stopper 5, and the lock lever, which is pulled clockwise by the spring 8 with the shaft 6 erected from the shaft 2 in the middle, is inserted. The roller portion 7a of 7 is located in the guide hole 1a provided on the side surface of the cartridge 1.
Completely fix the position of the cartridge 1 by pressing .

In this embodiment, the drive system is constituted by a chassis 2 and a head substrate 9 provided under the chassis 2. The chassis 2 and the head substrate 9 are configured so that the head base 8i9 can rotate about a rotation fulcrum 1o. head base 8
At 9, a head 11 is installed in a hollowed out portion of the chassis 2 so as to be able to contact the tape surface of the cartridge 1. The broken reproduction capstan 12 is held by a metal boss 13 fixed to the head base plate 9 so as to be freely rotatable. The head board 9 and the motor pulley 16 of the motor 15 are attached to the outer peripheral surface 14a of the flywheel 14, which is fully press-fitted into the regeneration capstan 12, and the motor angle part 9a protruding from the head board 9. A belt (1 ton) is applied horizontally, giving a moderate tension to the belt. A cam gear 20 is attached to a gear 18 press-fitted into a capstan 12 and a shaft 19 that is erected from a head base plate 9. Cam gear 20 and gear 1
8, in the regenerated state, the gears are not engaged by the toothless portion 202L of the cam gear 20.

Further, a plunger lever 22 is attached to a shaft 21 set up on the head board 9, and the movable core 36a of the plunger 36, which is also fixed to the head board 9, and one end 22b of the plunger lever 22 are rotatably attached. It is being The other end 22 of the plunger lever 22 comes into contact with a stiffener 20b provided near the outer periphery of the cam gear 20 to regulate the clockwise rotation of the cam gear 20.

A cam lever 24 is attached to the other shaft 23, and the end 24b on the side of the cam gear 20 is slightly lower than the position closest to the axis of the inner cam portion 20C of the Ir1 cam gear 2o. It is in contact with a certain point. A roller is attached to the other end 242L of the cam lever 24, and the roller surface is in contact with a plunger lever 26 attached to a shaft 25 upright from the chassis 2. The plunger lever 26 is pulled clockwise by a spring 27, and when the position of the cam L/bar 24 in contact with the pressure lever 26 is regulated in the above-described manner, the spring 27 acting on the pressure lever 26 is activated. The force is used to push the head base plate 9 clockwise through the entire shaft 23 of the cam lever 24.

A spring 28 is applied to the head board 9 to try to pull it counterclockwise, which is the opposite of the above, but the force exerted by the spring 27 is smaller than the force exerted by the spring 27, and the clockwise force on the head board 90 is The pinch roller 2 of the cartridge 1 is attached to the head board 9 by the recycling capstan 19.
9 is brought into contact with the tape driving force.

Contact A3C1 is also short-circuited by the sensor tape.
, contact B3obld, and the other end of each spring, which is insulated from the chassis 2 and is rotatably mounted from the chassis 2, and is fixed by being lightly pressed against the tape surface by the spring. is used as a terminal. In the playback state, the fast-forwarding roller 31 is separated from the drive system by a method described later and is housed on the left side of the playback capstan at a position closer to the head.

Next, Figure 6, is this the actual implementation? 11 represents the fast forward state. The cartridge 1 inserted between the shear 72 and the tape guide plate 3 is held in the same state as in one playback state. During playback, playback capstan 12
Fast forward, reroller 31 was located on the left side of spring 3.
4 pulls the fast-forward capstan metal boss 33 clockwise, and the fast-forward roller 31 press-fitted into the upper part of the fast-forward capstan 34 held by the fast-forward capstan metal boss 33 comes into contact with the pinch roller 29 of the cartridge screw 1. be done.

At the bottom of the fast-forward capstan 34 is a fast-forward idler 35.
is press-fitted. The head base plate 9 is pulled by the spring 28 so that the outer circumference of the fast-forward p idler 35 and the inner circumferential surface 14b of the flywheel come into contact. The head base @9 is pulled counterclockwise by the spring 28, and the force transmitted by the spring 43, which presses the fast-feeding roller 31 against the pinch roller 29 via the fast-feeding capstan metal boss 33, is weaker than that, but the force is transmitted. The spring force is set to the required spring force to obtain .

Cam gear 2 attached to a shaft 19 erected on the head board 9
0 is stopped at the position of the cam gear stone 20d by one end 22& of the plunger lever 22 attached to the shaft 21 which is also erected on the head base plate 9. ○The other one is erected on the head base plate 9. One end 24 & of the cam ray /<-24 attached to the shaft 23 is connected to the plunger lever 26 and the head attached to the shaft 26 erected on the chassis 2.
The li9 is pushed counterclockwise by the spring 28 which pulls it counterclockwise. However, the other end of this cam lens contacts the inner cam portion 200 of the cam gear 20 at a portion slightly before it reaches the farthest point from the axis.

In the fast forward state, the head 11 moves around the pivot point 10 -\
It rotates counterclockwise together with the tape board 9 and is separated from the tape surface of the cartridge 1.

Similarly, the capstan 12 for playback is separated from the tape and the pinch roller. Contact point A30a.

Contact point BsoJj The resistance of the tape being fed at high speed tries to push it back counterclockwise more than during playback, but the spring maintains stable contact with the tape. Note that the motor 15 rotates at the same number of rotations as during playback.
The difference between the diameter of the capstan 12 and the inner diameter of the flywheel inner surface 14b, and the idler 3 that is press-fitted into the rapid feed capstan.
5 and the fast-forwarding roller 31 provides a speed difference between playback and fast-forwarding.

The following explains how to switch between next playback and fast-forward operations. FIG. 7 shows the positions of the various parts of the base board 9 in the reproduced state, and FIG. 8 shows the fast-forwarded state. In FIG. 7, when the plunger 36 is energized for a short time, the movable iron core 36a of the plunger is pulled in the direction of the arrow 38, and the movable iron core 36? One end 22b of the plunger lever 22, which is rotatably attached to L, moves counterclockwise about the shaft 21. The other end of the plunger lever 222L also moves counterclockwise around the shaft 21 and is engaged with the stop bar 20b of the cam gear 20. Since a force is acting to rotate the inner cam part 200 in the centrifugal direction, the cam side end 2+b pushes the inner cam part 200 in the centrifugal direction. Inner cam part 20C
Since the contact part is at the beginning of the cam's descent, cam gear 2
0 is turned in the direction of the arrow 4°. Slightly before the cam comes down completely, the 20d stroke is placed at one end of the Francia lever.
2a [Because of the contact, rotation of the cam gear 20 is prevented.

During this operation, the cam gear 2o does not mesh with the gear 18 because it is located at the toothless portion 20& of the intermittent gear. Therefore, as the cam lever 24 rotates in the direction of the arrow 41, the entire head base plate 9 is rotated counterclockwise about the pivot point 10 by the spring 28 applied to the spring hook 9b of the rad plate.

FIG. 8 shows a state in which the above operations have been completed, and is in a fast forward state. Next, switching from fast forwarding to regeneration will be explained with reference to FIG. Inner cam portion 200 of cam gear 20 and cam lever 24
The contact part of b is in the downward stroke of the cam surface, and the cam lever 2
4 is the spring 2 applied to the spring 9b of the head board mentioned above.
8 and the plunge lever 26 attached to the chassis 2, a counterclockwise rotation force is exerted, and when the plunger lever 222L is removed from the cam gear stopper 20d, the cam gear 20 is moved in the direction of the arrow 40. It gets rotated a little.

When the cam gear 2o is turned a little, the real teeth of the gear 18 and the cam gear 20 begin to engage with each other - the gear 18 rotates counterclockwise and the cam gear 20 rotates in the direction of the arrow 40.

The inner cam of the cam gear 20 goes up the upward stroke, and the cam gear 24 that comes into contact with the rear end is rotated in the direction of the arrow 42 by a force greater than the above-mentioned reaction force. When the cam gear 20 rotates, it stops rotating and returns to the regeneration state shown in FIG. 7.

Next, as shown in FIGS. 9 to 12, the reproduction capstan 12 is
A method of replacing the fast forwarding υ roller 31 will be explained. Figures 9 and 10 show the reproduction capstan 12 during reproduction.
The fast-forwarding capstan metal boss 33, which is rotatably attached to a shaft 32 erected on the shaft 2, shows the state of the fast-forwarding P roller 31.
3b receives a clockwise rotation force, but since the curved portion 33a is regulated by a part 90 of the chassis, the fast forward shift 34 and the fast forward 90.
When the idler 31 and idler 35id are regenerated, they are completely separated from the drive system 1. Therefore, during playback, the motor 15-
Belt 17 - Flywheel 14 - Cab stan for regeneration 1
2-Driving force is transmitted to the pinch roller 29.

From this state, when the head substrate 9 rotates counterclockwise about the rotation fulcrum 10, the reproduction capstan 12 moves away from the pinch roller 29. The position of the fast-forward capstan metal boss 33 does not change while sliding on the chassis 9C, and when it starts to come into contact with the shaft 3 at the position where it slides on the chassis 9C.
2 in the clockwise direction by the force of the spring 43.

Then, the fast feed roller 31 is pressed against the pinch roller 29.

Next, by rotating the head base plate 9 in the counterclockwise direction, the flywheel 14 is moved backward, and the flywheel inner circumferential surface 14b and the idler 3
6 is brought into contact. Since the force of the spring 43 that pulls the fast-forward recarb tan metal boss 33 is stronger than the force of the spring 28 that retreats the flywheel 14, the rapid-forward roller 31, capstan 29, idler 35, and flywheel inner circumferential surface 14
Since the pressing force of b is maintained at an appropriate level, during fast forwarding, the motor 15 - belt 17 - flywheel outer peripheral surface 14a - flywheel inner peripheral surface 14b - idler 36 - rapid forwarding capstan 34 - rapid forwarding roller 31 - pinch roller 29. Driving force is transmitted.

This fast forward state is shown in FIGS. 11 and 12. From this state, when the flywheel 14 is rotated clockwise toward the head base plate 9 by closing the rotation fulcrum 10, the flywheel 14 also moves forward. As the flywheel A14 moves forward, the pressure bond between the flywheel inner circumferential surface 14b and the eye 36 is released, and the fast-forward capstan metal boss 33 is then pushed by the chassis 9d, thereby rotating counterclockwise around the shaft 32. The pressure between the fast feed roller 31 and the pinch roller 29 is also released. As the rotation of the head substrate 9 further progresses, the reproduction state shown in FIG. 9 is returned to. By the above method, the two drive shafts of the reverse playback capstan 12 and the fast forward roller 31 are replaced.

Furthermore, switching between fast forward operation and playback operation will be explained in detail. FIG. 13 is a block diagram of the main parts. The playback button and fast forward button are located on the main body panel and are effective only when the cartridge presence/absence detection switch 44 is ON.

When the cartridge is inserted, the respective operations can be activated by pressing the play button and the fast forward button. Also, from the playback state, you can enter the fast-forward state by pressing the fast-forward button, but the reverse is not possible. When sensing is detected by the contact 30 while the tape is running in the playback state, the motor 15 is stopped.

If sensing is detected while the tape is running in the fast-forward state, the plunger 36 is first pulled and the head board moves forward to return to the playback state.When the hex plate position detection switch 45 detects the playback position, the motor 16 is stopped. It will wait in playback mode.

Next, if the tape is removed during playback, the presence/absence detection switch 44 of the car) detects the presence of the IJ and stops the motor. If the tape is removed during fast forwarding, the plunger is pulled to move the head board forward in the same way as in the case of sensing detection, and when it is detected that the head board position has become playback, the motor is stopped.

Next, if the power is turned off during fast-forward operation or switching operation, when the power is turned on again, it will be in the regeneration state, and then the motor will be stopped and put on standby. In this case, when the power is turned on again, Cart'J2 is inserted.

The above operation is performed regardless of whether or not this happens.

In addition, after the fast-forward cue is completed, or after sensing detection,
Even after the plunger is pulled, the head substrate is advanced, and the regeneration position is detected, it is also possible to easily perform regeneration without stopping the motor.

By having these control units, it is easy to switch between playback and fast forward, and an operation system that prioritizes the four most frequently used playback states is realized, and even if the tape is removed or the power is turned off during operation, There will be no hindrance.

According to this embodiment, the following effects can be obtained.

A motor 15. Fly foil 14. Since the hexagonal head 11 is mounted, even if the head substrate 9 moves, the positions of the flywheel 14 and the motor 16 are always kept the same, so that stable belt running can be realized. Furthermore, since the hexagonal capstan 11 and the regeneration capstan 12 are also placed on the same base plate 9, the regeneration capstan 12 and the regeneration capstan 11 can be easily retracted at the same time for fast forwarding. It has become.

In the reproducing state, the pinch roller pressing force is obtained by pressing the reproducing capstan 12 against the pinch roller 29 of the cartridge 1 positioned by the stopper 5, so that a stable pinch roller pressing force with better followability than before can be obtained. .

Also, during playback, a fast forward crawler 31. The fast-forward mechanism parts such as the idler 35 are separated from the drive system and do not have an adverse effect on reproduction. The structure is such that it is easy to rotate the twisted head base 8i9 slightly counterclockwise during playback to release the pressure between the playback capstan 12 and the pinch roller 29, thereby providing a temporary stop function.

Furthermore, the stopper 6 provided on the cartridge holder 2 to receive the front side of the cartridge enables accurate positioning of the cartridge with less left and right play compared to the case where the cartridge is held on the front with a conventional fixed capstan. The impact of direct cartridge insertion is less likely to be transmitted, and the mechanism can be protected even if the tape falls over when inserting the tape.

Also, in fast forward mode, the head base g! As the head 9 rotates, the head 11 does not come into contact with the tape surface, thereby eliminating wear on the head and tape.

Since rapid feeding is performed by a dedicated rapid feeding roller 31, the rubber roller allows a high tape and driving force even with a low pressing force, and has little effect on the tape. Since the driving force for fast-forwarding is extracted from the inner circumferential surface of the flywheel 14, which is rotating at the same number of rotations as during playback, it is possible to easily obtain a circumferential speed of about 10 times that of the flywheel 14 in the same direction. Even when switching between fast forwarding and playback, stable tape running with little change in speed at the start can be realized.

Further, with the above configuration, it is possible to reduce the current value of the motor driving force as a whole.

Although this embodiment shows an example in which two drive shafts are replaced by one motor, it goes without saying that the same effect can be obtained even if a motor is used for each.

Effects of the Invention The present invention provides a head and a reproducing capstan on a head substrate that is movable with respect to a cartridge insertion portion.

By mounting the flywheel and motor, it is possible to realize a configuration in which the traveling system remains in the regeneration state and switches to the fast-forward state by moving the head board, even at 9 o'clock when the fast-forward and regeneration switching starts. This makes it possible to realize an excellent cartridge type tape recorder that can provide stable tape running with little speed change.

[Brief explanation of drawings]

1 and 2 are perspective views of a conventional karaoke machine; FIG. 3 is a plan view of a cartridge-type tape recorder according to an embodiment of the present invention in a playing state; FIG. 5 is a side view thereof; and FIG. A plan view of this embodiment in a fast forward state, FIG. 6 is a side view of the same, and FIG.
Figure 8 is a plan view of the main board during playback and at fast forward 9 - Figure 9 is a plan view of the main parts in the playback state, Figure 10 is a side view - Figure 11 is fast forward Plan view of main parts of state - 1st
FIG. 2 is a side view thereof, and FIG. 13 is a block diagram of the main parts. 1...Cart screw, 2...Chassis 9...Head board-10...Rotation fulcrum,
11...Head, 12...Capstan for playback, 14. River/flywheel 15...Motor 1
7...Belt, 18...Gear 20...
...Cam gear, 22...° plunger lever, 24.
...Cam lever-26... Flexure lever, 29... Pinch roller, 31... Rapid feed roller 33... Rapid feed capstan metal boss, 34... ...Fast forward capstan, 35...
...Idler, 36...Plunger-44
...Cartridge presence/absence detection leaf switch, 4
5... Head base machine position detection switch. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 4 Figure 6 Figure 9 Figure 10 Figure 12

Claims (1)

[Claims] A cartridge type tape recorder is provided with a head board that is movable relative to a cartridge insertion part, and a head, a capstan, a flywheel, and a motor are placed on the head board.