JPS61115263A - Quick traverse device of cartridge-type tape recorder - Google Patents

Abstract

PURPOSE:To switch easily reproduction and quick traverse and to attain them in use of a cartridge by providing a movable head substrate with respect to a cartridge inserting part, a tape guide and a rod for releasing the brake mechanism of the cartridge. CONSTITUTION:Since a tape is taken out of the inner periphery of a fly foil 14, the quick traverse goes to a peripheral speed easily about ten times in the same direction as a reproducing capstan 12. It is unnecessary to change the rotational frequency of a motor and an electric current value can be suppressed to a low level. When the brake release rod 49 installed on a chassis 1 presses the brake claw 51 of the cartridge 1, a reel 53 is made rotatable, whereby the reproduction and the rapid traverse can be realized. With a tape guide 54 installed on the head substrate 9, the height of a head 11 and that of the tape guide can be kept constantly at the reproduction, and therefore a stable head height can be set. Since the tape guide 54 retreats from a ape face together with the shift of the head substrate 9 at rapid traverse, the load of a tape quick traverse can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fast forwarding device for a cartridge type tape recorder.

2. Description of the Related Art In recent years, endless tape cartridges have been widely used for karaoke, BGM performances, etc. because they are extremely easy to operate. 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.

An example of a conventional fast forwarding device for a cartridge type tape recorder will be described below.

FIG. 12 shows the appearance of a conventional fast-forwarding device of a cartridge type tape recorder, and is an example in which a playback device and a fast-forwarding device are provided separately. Person B is a device that only has a normal playback function, and B is a device that only has multiple fast forward functions.

Another conventional example uses only one mechanism, uses the same drive method used during playback, and performs fast forwarding by increasing the rotational speed of the motor.

Problems to be Solved by the Invention However, the above configurations each have the following problems. In the case of the conventional example shown in FIG. 12, more parts such as a motor and a board are required, and there are also two cartridge insertion slots, which occupies a large space on the panel surface. There is also a problem with using the playback cartridge: when you insert the cartridge into the player and press the playback button, the song is already in the middle and you want to fast-forward. After inserting the cartridge into the feeding cartridge insertion slot B, locating the beginning, and then inserting it again into the reproducing cartridge insertion slot B, it was necessary to take the cartridge in and out, which was troublesome.

In addition, in the latter conventional example, which is configured to increase the rotational speed of the motor, the fast forward speed can only be raised to about 2 to 4 times the reproduction speed, and there is a drawback that it takes time to locate the beginning. Furthermore, since the tape is stretched 2 to 4 times 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 pole and the high speed rotation of the motor caused an increase in the current value. Therefore, 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/capstan fixed to the chassis, which tends to cause impact to the capstan and pinch roller, which are the most important parts of the drive system. In addition, since the cartridge is held at one point, it is easy for the cartridge to be held back and forth from side to side, which has the disadvantage that the grip is likely to change.

In view of the above-mentioned problems, the present invention is a cartridge type tape recorder in which playback and fast forwarding can be performed through a single cartridge insertion slot, which allows easy switching between playback and fast forwarding, even when using a cartridge with a brake mechanism In order to solve the above-mentioned problems, the fast-forward device for a cartridge-type tape recorder of the present invention has a head board that is movable with respect to the cartridge insertion part. The device includes a tape guide provided on the head substrate, and a rod provided from the fixed substrate for releasing the brake mechanism of the cartridge.

Effect of the Invention The present invention has the above-described configuration, so that playback and fast-forwarding can be performed in one cartridge insertion slot, and switching between playback and fast-forwarding is performed by moving the head board, and the cartridge is braked by a rod provided from the fixed board. This is to release the mechanism.

EXAMPLE Hereinafter, a fast forwarding device for a cartridge type tape recorder according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of a fast-forwarding device of a cartridge type tape recorder in a reproducing state according to an embodiment of the present invention. Further, FIG. 2 is a side view thereof. When the cartridge 1 is inserted onto the chassis 20 surface along the guide roller 4 provided between the chassis 2 and the cartridge guide plate 3, the position of the cartridge 1 is regulated by the cartridge stopper 6, and the shaft erected from the chassis 1 is The position of the cartridge 1 is fixed by the roller portion 7& of the lock lever 7, which is pulled clockwise by the spring 8, pushing the guide hole 12L provided on the side surface of the cartridge 1.

In this embodiment, the drive system is constituted by a chassis 1 and a head substrate 9 provided under the chassis 1. The chassis 1 and the head substrate 9 are configured such that the head substrate can rotate around a rotation fulcrum 10. A head 11 is installed on the head substrate 9 so as to come into contact with the tape surface of the cartridge 1 from the combed portion of the seven palms 1 and hang therefrom.

Further, the reproduction capstan 12 is held by a metal boss 13 fixed to the head substrate 9 so as to be freely rotatable. The head board 9 is connected to the outer circumferential surface 14 of the flywheel 14 press-fitted into the reproduction capstan 12 and the motor pulley 16 of the motor 16 attached by the motor angle part 9a protruding from the head board 9.
A belt 17 is placed horizontally to apply appropriate tension. A gear 18 is press-fitted into the capstan 12, and a cam gear 2 is mounted on a shaft 19 that is erected from the head board 9.
0 is attached. In the regenerated state, the cam gear 20 and the gear 12 are not engaged with each other due to the toothless portion 20B of the cam gear 20.

A plunger lever 22 is attached to the shaft 21 erected on the head substrate 9, and the movable core 362L of the plunger 36, which is also fixed to the head substrate 9, and one end 22b of the plunger lever 22 are rotatably attached. There is.

The other end 222L of the plunger lever 22 contacts a stopper 20b provided near the outer periphery of the cam gear 2o to regulate the clockwise rotation of the cam gear 20. Head board 9
A cam lever 24 is attached to the other shaft 23 erected on the shaft, and one end 24b on the cam side is in contact with the inner cam portion 200 of the cam gear 2o at a position slightly lower than the closest position. .

The other end 241L of the cam lever 24 has a roller attached thereto, and a pressure lever 26 attached to a shaft 26 that is erected from the roller surface and the chassis 2 is in contact with the reed. The pressure lever 26 is pulled clockwise by a spring 27, and the cam lever 2 is in contact with the pressure lever 26.
When the position of the cam lever 24 is regulated in the above-described manner, the force of the spring 27 acting on the pressure lever 26 is
3 is used to push the head substrate 9 clockwise.

A spring 28 is applied to the head board e that tries to pull it in the counterclockwise direction, 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 of the head board e The pinch row 22 of the cartridge 1 is removed by the playback capstan 19 attached to the head board 9.
9 is brought into contact with the tape driving force. Also, the contact point 30a, which is short-circuited by the sensing tape,
The contact Baob is insulated from each contact and the chassis 2, and is rotatably mounted from the chassis 2.
The other end of each spring, which is lightly pressed and fixed against the tape surface by a spring, serves as a terminal. In the reproduction state, the fast-forward row 231 is separated from the drive system by a method described later and is placed at a position near the head 11 on the left side of the reproduction capstor/12.

Next, FIGS. 3 and 4 show the fast forwarding state of the embodiment. The cartridge 1 inserted between the chassis 1 and the cartridge guide plate 3 is held in the same manner as in the playback state. Capsta/12 for playback when playing
The fast forward roller 31 was located on the left side of the spring 34.
When the fast-feeding capstan metal boss 33 is pulled clockwise, the fast-feeding roller 31 press-fitted into the upper part of the fast-feeding capstan 34 held by the fast-feeding capstan metal boss 33 becomes the pinch roller of the cartridge 1. 29. A rapid shear idler 36 is press-fitted into the lower part of the rapid shear idler 34. The head base plate 9 is pulled by the spring 28 so that the outer periphery of the rapid shear idler 36 comes into contact with the inner peripheral surface 14b of the flywheel. spring 28
The force by which the head substrate 9 is pulled counterclockwise by the spring 34 is weaker than the force by which the spring 34 presses the fast-forward roller 31 against the pinch roller 29 via the fast-forward capstan metal boss 33, but a transmission force is obtained respectively. The spring force is set as required.

Cam gear 2 attached to a shaft 19 erected on the head board 9
o is stopped at a cam gear stopper 20d by one end 22a of a plunger lever 22 attached to a shaft 21 erected on the same head board 9. One end 24 & of the cam lever 24 attached to a shaft 23 erected on another head substrate 9 pulls the pressure lever 26 attached to a shaft 25 erected on the chassis 2 and the head substrate 9 counterclockwise. It will be pushed counterclockwise by the spring 28. However, the other end of the cam lever 24 is in contact with the inner cam portion 20c of the cam gear 20 at a portion slightly before the end of the inner cam portion 20c reaches the farthest point.

In the fast forward state, the head 11 is rotated counterclockwise together with the head substrate 9 about the pivot point 10 and is separated from the tape surface of the cartridge 1. Similarly, the reproducing capstan 12 is separated from the tape and the pinch roller. Contact point B 302L and contact point B 50b tend to be pushed back counterclockwise to a greater extent than during playback due to the resistance of the tape being fed at high speed, and stable contact with the tape surface is maintained by a spring. The motor 16 is rotating at the same rotation speed as during playback, and the difference between the diameter of the capstan 12 and the inner diameter of the flywheel inner surface 14b and the fast-forwarding capstan 34
The difference in speed between the idler 35 and the fast-forward roller 31, which are press-fitted into the playback mode, creates a speed difference between playback and fast-forwarding.

A method of switching between the next playback and fast-forward operations will be explained. FIG. 6 shows the position of each component of the head board 9 in the reproduction state, and FIG. 6 shows the fast forward state. In FIG. 6, when the plunger 36 is energized for a short time, the movable core 36a of the plunger 36 is pulled in the direction of the arrow 38,
One end 22b of the plunger lever 22, which is rotatably attached to the movable iron core 38a, moves counterclockwise about the shaft 21.

The other end 222L of the plunger lever 22 also moves counterclockwise around the shaft 21, and the cam gear 2o is disengaged from the stopper 20b, and the cam lever 24 is rotated in the direction of the arrow 41 in the manner described above.

Because of the force acting on the inner cam portion 20c, the one end 24b on the cam side pushes the inner cam portion 20c in the centrifugal direction.

Since the contact portion of the inner cam portion 200 is at the bottom starting position of the cam, the cam gear 20 is rotated in the direction of the arrow 40. The stopper 20d comes into contact with one end 22a of the plunger lever 22 slightly before the cam is completely lowered, so the cam gear 20
rotation is prevented.

During this operation, the cam gear 2o does not mesh with the gear 18 because it is in the cutout part of the intermittent gear. Therefore, cam lever 2
4 rotates in the direction of arrow 41, the entire head base plate 9 is rotated counterclockwise about the pivot point 10 by the spring 28 applied to the spring-loaded portion 9b of the head base plate 9. FIG. 6 shows a state in which the above operations have been completed, and the state is in fast forward mode.

Next, switching from fast forwarding to playback will be explained with reference to FIG. When the plunger 36 is energized again for a short time, the movable iron core 36a is pulled in the direction of the arrow 38 and the plunger lever 22 is turned in the direction of the arrow 39. The contact portion between the inner cam portion 20c of the cam gear 2o and the cam lever 24b is in the downward stroke of the cam surface, and the cam lever 24 has a spring 28 applied to the spring 9b of the head board 9 and a pressure lever 26 attached to the chassis 2. Due to the adjustment of the plunger lever 2, a force is applied to turn it counterclockwise.
By removing the cam gear 20 from the cam gear stopper 20d, the cam gear 20 is rotated a little in the direction of the arrow 4°. By rotating cam gear 2o, gear 18 and cam gear 2
0 begins to engage, the gear 18 rotates counterclockwise, and the cam gear 2o rotates in the direction of the arrow 40. Since the inner cam of the cam gear 2o is in the upward stroke, the cam gear 24 in contact with it is rotated in the direction of the arrow 41 by a force greater than the above-mentioned reaction force. When the cam gear 2o rotates to a position where the plunger lever 222L and the stopper 20b of the cam gear 20 come into contact, the rotation stops and the regeneration state shown in FIG. 6 is resumed.

Next, as shown in FIGS. 7 to 1o, the regeneration capstan 12 is
A method of replacing the fast feed roller 31 will be explained. FIGS. 7 and 8 show the states of the reproduction capstan 12 and the fast-forward roller 31 during reproduction. The fast-forward capstan metal boss 33 is rotatably attached to a shaft 32 erected on the chassis 2, and its spring-loaded portion 3
3b, but since the hook portion 33a is regulated by a portion 9c of the head board 9, the fast-forward capstan 34 and the fast-forward crawler 31. The idler 35 is completely separated from the drive system during regeneration. Therefore, during regeneration, the motor 15 - belt 17 - flywheel 14 - regeneration capstan 12 -
The driving force is transmitted to the pinch row 229.

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. Further, the position of the fast-forwarding capstan metal post 33 does not change while it is sliding on the head board 9C, and when it starts to make contact with the head board 9d at the position where it is sliding, it is moved clockwise around the shaft 32 by the force of the spring 34. I am drawn to it.

Then, the fast forwarding roller 31 is pressed against the pinch roller 29, and then the flywheel 14 is retreated by counterclockwise rotation of the head base plate 9, and the inner peripheral surface 14b of the flywheel and the idler 36 are brought into contact with each other. Rapid feed shifter 7 by spring 34
Since the force that pulls the metal boss 33 is stronger than the force of the spring 28 that retracts the flywheel 14, the rapid feed roller 31, capstan 29, idler 35, and flywheel inner peripheral surface 1
4b is maintained at an appropriate level, so during fast forwarding, the motor 15 - belt 1 - flywheel outer circumferential surface 14 & -
The driving force is transmitted to the flywheel inner circumferential surface 14b, the idler 36, the fast feed shifter 734, the fast feed roller 31, and the pinch row 229. This fast-forward state is shown in FIGS. 9 and 10.

From this state, when the head base plate 9 rotates clockwise about the rotation fulcrum 10, the flywheel 14 also moves forward. As the flywheel 14 moves forward, the pressure between the flywheel inner surface 14b and the idler 36 is released, and then the fast-forwarding capstan metal boss 33 is pushed by the chassis 9d and rotates counterclockwise around the shaft 32. The pressure between the fast-forwarding 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. 7 is returned to. By the method described above, the two drive shafts of the reproduction capstan 12 and the fast-forward roller 31 are replaced.

Next, we will explain how to release the brake when using a cartridge with a brake mechanism. FIG. 11 is a plan view of the cartridge with a brake mechanism.

The reel 53 is provided with a ratchet on its outer periphery as shown in the figure. The brake pawl 61 is pushed counterclockwise by a spring 62 around the brake pawl fulcrum 6o and engages with the ratchet of the reel 53, thereby preventing the tape from sagging. During reproduction, by pushing the tape guide or the brake pawl 61, the ratchet is released and the reel 63 can rotate.

The reproducing state in which this cartridge with brake mechanism is inserted is as shown in FIG. As shown in the figure, the brake claw 61 of the cartridge 1 is pushed in by the brake release rod 49 provided from the chassis 1, and the reel 63 is in a rotatable state. Next, in the fast forward state, even if the tape guide 64 moves backward as shown in FIG. It is in a possible state.

Note that this embodiment provides the following effects. A motor 16, a flywheel 14. Since the head 11 is mounted, the head substrate 9
Even if the belt moves, the positions of the flywheel 14 and the motor 16 are always kept the same, so stable belt running can be realized. Further, since the head 11 and the reproducing capstan 12 are also mounted on the head substrate 9, the configuration is such that the reproducing capstan 12 and the head 11 can be easily retreated at the same time for fast forwarding.

In the reproducing state, the pinch roller pressing force is obtained by pressing the reproducing capstan 12 against the pinch roller 29 of the letter cartridge 1 positioned by the stopper 6, so that a stable pinch roller pressing force with better followability than before is obtained. can get. Also, when playing, fast forward crawler 3
1. The idler 35 and other fast-forward mechanism parts are separated from the drive system, and do not have any adverse effects such as uneven rotation, transmission torque loss, or increased load due to contact during regeneration.

Furthermore, the head substrate 9 is easily rotated slightly counterclockwise during reproduction to release the pressure between the reproduction capstan 12 and the pinch roller 29, thereby providing a temporary stop function.

The stopper 6 provided on the chassis 2 to receive the front side of the cartridge enables accurate positioning of the cartridge 1 with less lateral play than in the case where the front side is supported by a conventional fixed capstan. Further, when the cartridge is directly inserted into the reproducing capstan 12 or the head 11, the impact is less transmitted, and the mechanism can be protected even if the cartridge falls over during insertion.

Further, in the fast-forward state, the head substrate 9 rotates so that the head 11 does not come into contact with the tape surface, thereby eliminating wear on the head and tape.

Since rapid forwarding is performed by a dedicated rapid forwarding roller 31, a high tape driving force can be obtained even with low pressure bonding by the rubber roller, and there is little influence on the tape. In addition, since the driving force for fast forwarding is taken out from the inner peripheral surface of the flywheel 14, which rotates at the same rotation speed as during playback, it is easy to increase the circumferential speed about 10 times in the same direction as the playback capstan 12. You can get it. Further, there is no need to change the motor rotation speed, and the current value can be kept low for the reasons mentioned above. Further, when the brake release rod 49 provided from the shear 71 pushes the brake pawl 61 of the cartridge 1, the reel 63 becomes rotatable, and the tape can be played back and fast-forwarded. Furthermore, since the tape guide 54 is provided on the head substrate 9,
When playing, to.

Since the heights of the head board 11 and tape guide 64 are kept constant, stable head height setting can be achieved, and during fast forwarding, as the head board 9 moves, the tape guide 64 also retreats (from the tape surface). Therefore, it is also effective in reducing the load when running the tape at high speed.

Effects of the Invention As described above, the present invention can release the head substrate movable with respect to the cartridge insertion portion, the tape guide provided on the head substrate, and the brake mechanism of the cartridge. By providing a rod attached to the fixed board, the head and tape guide are placed on the same board during playback, making it possible to set the head height stably. Also, during fast forwarding, the tape guide is placed on the same board as the head board. Since it moves backward, the load of tape running at high speed can be reduced, and even cartridges with a brake mechanism can be similarly reproduced and fast-forwarded.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a fast-forwarding device of a cartridge type tape recorder in an embodiment of the present invention in a playback state, FIG. 2 is a side view thereof, and FIG. 3 is a plan view showing a fast-forwarding state of this embodiment. 4 is a side view thereof, FIG. 6 is a plan view of the head board of this embodiment in a reproducing state, and FIG. 6 is a plan view of the head board in a fast forward state.
Figure 7 is a plan view showing the position of the pinch roller and two drive shafts in the regenerated state, Figure 8 is a side view thereof, and Figure 9 is the position of the pinch roller and two drive shafts in the fast forward state. 1Q is a side view thereof, FIG. 11A is a plan view of the brake mechanism cartridge, and FIG. 12 is an external view of a conventional example. DESCRIPTION OF SYMBOLS 1...Cartridge, 2...Chassis, 9...Head board, 1o...Rotation fulcrum, 11...Head, 44... ...Head board fixing lever, 46...Lock plate, 46...
... Spring, 47 ... Lock shaft, 48 ...
... Lock spring, 49 ... Brake release rod, 6Q ... Brake claw fulcrum, 51 ...
・Brake pawl, 62... Spring, 53...
・Reel, 64...Tape guide. Name of agent: Patent attorney Toshio Nakao and 1 other person2-
Chassis Figure 2 #f3 Figure 4 Figure 5? 44 Figure 6 Figure 7 Figure 9 Figure 10 Figure 11 Figure 12

Claims (1)

[Claims] a head board that is movable relative to the cartridge insertion section;
A fast-forwarding device for a cartridge type tape recorder, comprising a tape guide provided on a head substrate and a rod provided from a fixed substrate for releasing a brake mechanism of the cartridge.