JPS61115265A - Quick traverse device of cartridge-type tape recorder - Google Patents

Abstract

PURPOSE:To attain a quick traverse by installing on a head substrate a fly foil, a gear implanted on the fly foil, an intermittent gear disposed on the gear detainably and a lever disposed so that the head substrate can be shifted with respect to a fixed substrate due to the rotation of the intermittent gear. CONSTITUTION:The cam gear 20 of a shaft 19 is detained at the position of the stopper 20d of the cam gear by the one end 22a of the plunger lever 22 of a shaft 21. One end 24a of the cam lever 24 of a shaft 23 is pressed counterclockwise by a plunger lever 26 fitted to a shaft 25 and a spring 28. On the other hand, the other end of the cam lever 24 abuts on a pat slightly before the part where it completely descends the shaft core of the inner cam part 20c of the cam gear 20. In the quick traverse state, the head 11 rotates counterclockwise together with the head substrate 9 with a turning fulcrum 10 as a center, and is separated from the tape face of a cartridge 1. A motor 15 rotates at the same rotational frequency as at the reproduction, and the difference between the diameter of a capstan 12 and the inner diameter of a fly foil inner face 14b and that between an idler 35 and a rapid traverse roller 31 bring the speed difference between at the reproduction and the quick traverse.

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. 11 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. B is a device with only a normal playback function, and B is a device with only a fast forward function.

Another conventional example uses a single 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. 11, more parts such as a motor and a board are required, and there are also two cartridge insertion openings, so a large space is occupied on the spring Y surface. There is also a problem with using the playback cartridge: when you insert a playback cartridge and press the playback button, the song is already in the middle and you want to fast-forward. It is necessary to insert the cartridge into the feeding cartridge insertion slot B, perform a cue search, and then insert it into the reproduction cartridge insertion ROM again, which requires troublesome loading and unloading of the cartridge.

Furthermore, in the latter conventional example, which is configured to increase the number of revolutions of the motor, the fast forward speed can only be raised to about 2 to 4 times that of playback, and there is a drawback that it takes time to locate the beginning. In addition, since the tape is stretched 2 to 4 times while it is being played, the tape and the tape wear quickly, and there is a risk of damaging the tape and the 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 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. Since it is supported 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 radial touch tends to change.

In view of the above problems, the present invention provides 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, and provides driving force for playback and fast forwarding with a low current value. The present invention provides a fast-forwarding device that can obtain the following information.

Means for Solving the Problems In order to solve the above problems, the fast forwarding device for a cartridge type tape recorder of the present invention has a flywheel and a flywheel mounted on a head substrate that is movable with respect to the cartridge insertion section. This device includes a implanted gear, an intermittent gear disposed to engage with the implanted gear, and a lever disposed so as to move the head substrate relative to the fixed substrate by rotation of the intermittent gear.

Effects of the present invention With the above-described configuration, playback and fast forwarding can be performed in one cartridge insertion slot, and by moving the head board by the rotational force of the flywheel, switching between playback and fast forwarding is performed, and during fast forwarding, the head and fast forwarding can be performed. By separating the reproducing capstan from the tape surface and switching to a drive method exclusively for fast forwarding, fast forwarding and reproducing can be achieved with low current without changing the motor rotational speed.

Embodiment 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 surface of the chassis 2 along the guide roller 4 provided between the chassis V2 and the cartridge guide plate 3, the position of the cartridge 1 is regulated by the cartridge stopper 6, and the shaft raised from the chassis 1 is fixed. The roller portion 7N of the lock lever 7, which is pulled clockwise by the spring 8 around the IJ edge 6, fixes the position of the cartridge 1 by pushing the guide hole 1& provided on the side surface of the IJ edge 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. The head 11 is installed on the head substrate 9 so that it can come into contact with the tape surface of the cartridge 1 from the hollowed out portion of the chassis 1.

Further, the reproduction capstan 12 is held by a metal post 13 fixed to the head substrate 9 so as to be freely rotatable. It is mounted horizontally to the head board 9 by the outer peripheral surface 1jl of the Fufihoi/L/14 that is press-fitted into the playback capstan 12 and the motor pulley 16 of the motor 15 attached by the motor angle part 9a protruding from the head board 9. 〃A trough is applied and appropriate tension is applied. Gear 1 press-fitted into capstan 12
A cam gear 20 is attached to a shaft 19 8 and a shaft 19 erected from the head substrate 9. In the regenerated state, the cam gear 20 and the gear 12 are not engaged with each other by the toothless portion 20a of the cam gear 20.

A plunger lever 22 is attached to a shaft 21 erected on the head substrate 9, and the movable iron core 36& 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. . The other end 221L of the plunger lever 22 contacts a stopper 2ob provided near the outer periphery of the cam gear 20 to regulate clockwise rotation of the cam gear 2o. A cam lever 24 is attached to each shaft 23 that stands on the head board 9, and one end 24b on the cam side is located slightly below the position closest to the axis of the inner cam portion 20C of the cam gear 2°. is in contact with.

The other end 24& of the cam lever 24 has a roller attached to it,
A pressure lever 26 attached to a shaft 25 raised from the chassis 2 comes into contact with the roller surface. The pressure lever 26 is pulled clockwise by the spring 2T, and the cam lever 24 is in contact with the punchy 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
It is used as a force to push the head board 9 clockwise through the head board 9.

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 9 is , the pinch roller 2 of the cartridge 1 is removed by the regeneration capstan 19 attached to the head board 9.
9 is brought into contact with the tape driving force. Also, the contact point 30 & .
The contact B50b is insulated from each contact and the chassis 2, and is rotatably mounted on the chassis 2.
Each is lightly pressed against the tape surface by a spring, and the other end of each fixed spring serves as a terminal. In the reproduction state, the fast-forwarding roller 31 is separated from the drive system by a method described later and is placed at a position on the left side of the reproduction capstan 12 near the head 11.

Next, FIGS. 3 and 4 show the fast forwarding state of the embodiment. The car 1-IJ cartridge 1 inserted between the chassis 1 and the cartridge guide plate 3 is held in the same state as in the playback state. During playback, the fast-forward roller 31 was positioned on the left side of the playback capstan 12, but the spring 34 pulled the fast-forward capstan metal boss 33 clockwise, and the fast-forward capstan 34 held by the fast-forward capstan metal post 33 The fast feed roller 31 press-fitted into the upper part of the cartridge 1 comes into contact with the pinch roller 29 of the cartridge 1. A rapid-forward idler 36 is press-fitted into the lower part of the rapid-forward gear destination 34. The head base plate 9 is pulled by the spring 28 so that the outer periphery of the fast-forward idler 35 comes into contact with the inner peripheral surface 14b of the flexible foil. The force by which the head substrate 9 is pulled counterclockwise by the spring 28 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 recharging metal post 33; The spring force is set to the amount required to obtain the required spring force.

Cam gear 2 attached to a shaft 19 erected on the head board 9
0 is a cam gear stopper 20 (stopped at position 1) by one end 22a of a plunger lever 22 attached to a shaft 21 erected on the same head substrate 9.A shaft 23 erected on another head substrate 9 One end 24 & of the cam lever 24 attached to the cam lever 24 is pushed counterclockwise by a pressure lever 26 attached to a shaft 25 erected on the chassis 2 and a spring 28 that pulls the head board 9 counterclockwise. However, the other end of the cam lever 24 is in contact with the inner cam portion 2oC 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 rotates counterclockwise together with the head substrate 9 about the pivot point 1o, 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 30 & 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, but stable contact with the tape surface is maintained by the spring. The motor 16 rotates at the same rotation speed as during regeneration, and the regeneration is caused by the difference between the diameter of the capstan 12 and the inner diameter of the flywheel inner surface 14b, and the difference between the idler 36 press-fitted into the fast-forward capstan 34 and the fast-forward roller 31. This results in a speed difference between time and fast forward.

The following explains how to switch between next playback and fast-forward operations. FIG. 5 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. 5, 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 36&, moves counterclockwise around the shaft 21. The other end 22+L of the plunger lever 22 is also shaft 21
The stopper 2 of cam gear 2o moves counterclockwise around .
The cam gear 20 is disengaged from the ob, and the cam lever 24
Since a force is acting to rotate the inner cam part 200 in the direction of the arrow 41 in the above-described manner, the one end 24b on the cam side pushes the inner cam part 200 in the centrifugal direction.

Since the contact portion of the inner cam portion 20c is at the position where the cam begins to descend, the cam gear 2o is rotated in the direction of the arrow 4o. The stopper 20d comes into contact with one end 221 of the plunger lever 22 slightly before the cam completely descends, 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 toothless portion 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 1o by the spring 28 applied to the spring-loaded portion 9b of the head base base 9. FIG. 6 shows a state in which the above operations have been completed, and is in a fast forward state.

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 36& 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 200 of the cam gear 20 and the cam lever 24b is located 9 strokes below the cam surface. 26 and positive VC act to rotate the plunger lever 221L counterclockwise, and when the plunger lever 221L is removed from the cam gear stopper 2od, the cam gear 2o is slightly rotated in the direction of the arrow 4o. As the cam gear 20 is rotated, the real teeth of the gear 18 and the cam gear 2o begin to engage, and the gear 18 rotates counterclockwise and the cam gear 20 rotates in the direction of the arrow 4o. 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 22& 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 10, the regeneration capstan 12 is
A method of exchanging the fast forward row 231 will be explained. FIGS. 7 and 8 show the states of the reproduction capstan 12 and the fast-forwarding roller 31 during reproduction. A fast-forwarding capstan metal boss 33 rotatably attached to a shaft 32 erected on the chassis 2 is connected to its spring-loaded portion 3.
3b, but since the hook portion 33& is regulated by the part 9C of the head board 9, the fast-forward capstan 34, fast-forward roller 31, and idler 36 are completely rotated during playback. It is separated from the drive system. Therefore, during regeneration, the motor 16 - bell) 17 - 7 live wheel 14 - regeneration capstan 12 -
The 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. Also, the fast-forwarding υ capstan metal boss 33 does not change its position while the head board 9Ci is sliding, and when it starts to make contact with the head board 9d at the sliding position, it is pulled clockwise around the shaft 32 by the force of the spring 34. It will be destroyed.

Then, the fast feed roller 31 is pressed against the pinch roller 29, and then the head substrate 90 is rotated counterclockwise, causing the flywheel 14 to retreat and the inner peripheral surface 14b of the flywheel to come into contact with the idler 35. Since the force of the spring 34 that pulls the fast-feeding capstan metal boss 33 is stronger than the force of the spring 28 that moves the flywheel 14 backward, the fast-feeding roller 31, capstan 29, idler 35, and flywheel inner peripheral surface 14
Since the pressing force of b is maintained at an appropriate level, the motor 15 - belt 17 - flywheel outer circumferential surface 142L -
The driving force is transmitted to the flywheel inner peripheral surface 14b, the idler 35, the fast feed capstan 34, the fast feed roller 31, and the pinch roller 29.

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'z, the flywheel 14 also moves forward. As the flywheel 14 advances, the pressure between the flywheel inner surface 14b and the idler 35 is released, and then the fast-feeding capstan metal post 33 is pushed by the chassis 9d and rotates counterclockwise around the shaft 32, so that the fast-feeding roller 31 and the pinch roller 29 are also released.

As the head substrate 90 rotates further, it returns to the reproduction state shown in FIG. 7. The two drive shafts of the reproduction capstan 12 and the fast-forwarding roller 31 are replaced by the above method.

Note that this embodiment provides the following effects. Since the motor 15, the flywheel 14, and the head 11 are mounted on the head board 9, which performs multiple rotations, the head board 9
Even if the belt moves, the positions of the flywheel 14 and the motor 15 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 cartridge 1 positioned by the stopper 5, so that a stable pinch roller pressing force with better followability than before is obtained. can get. Also, during playback, the fast forward roller 3
1. The idler 35 and other fast-forwarding mechanisms 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.

Further, 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 5 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. There is still little impact transmitted when the cartridge is directly inserted into the reproducing capstan 12 or the head 11, and the mechanism can be protected even if the cartridge falls over during insertion.

Further, in the fast-forwarding 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.

Fast forwarding is performed by the fast forwarding roller 31 dedicated to the fast forwarding t'', so even with a low pressure force due to the rubber roller, high tape driving force can be obtained, and there is little effect on the tape.Furthermore, the driving force for fast forwarding is provided by the flywheel 14, which is rotating at the same number of rotations as during playback. Since it is taken out from the inner peripheral surface of the regeneration capstan 12, it is possible to easily obtain a circumferential speed of about 10 times in the same direction as the regeneration capstan 12.There is no need to change the motor rotation speed, and the current value can be kept low for the reasons mentioned above. I can do it.

Effects of the Invention As described above, the present invention provides a flywheel, a gear implanted in the flywheel, and an intermittent gear disposed in engagement with the flywheel on a head substrate movable with respect to a cartridge insertion portion. By providing a lever arranged to move the head substrate relative to the fixed substrate by rotation of the intermittent gear, it is possible to easily switch between the playback state and the fast-forward state.

[Brief explanation of the drawing]

FIG. 1 shows a car in one embodiment of the present invention) IJ hook 9
Plan view of the playback state of the fast forwarding device of the tape recorder, 2nd
3 is a plan view showing the fast-forward state of the present embodiment, FIG. 4 is a side view thereof, and FIG. 6 is a plan view of the head board of the present embodiment in the playback state. Fig. 7 is a plan view showing the entire position of the pinch roller and two drive shafts in the regenerated state, Fig. 8 is a side view thereof, and Fig. 9 is a fast feed of the pinch roller and two drive shafts. A plan view showing the position in the state, FIG. 10 is a side view, and FIG. 11 is
1 is an external view of a conventional cartridge type tape recorder in which playback and fast forwarding are performed using separate devices. FIG. DESCRIPTION OF SYMBOLS 1...Cartridge, 2...Chassis, 9...Head board, 1o...Rotation fulcrum, 11...Head, 12... ...Regeneration capstan, 14...Flywheel, 16.
...Motor, 17...Belt, 18...
...Gear, 2o...Cam gear, 22...
... Plunger lever, 24 ... Cam lever, 26 ... Pressure lever, 29 ...
・Pinch roller, 31...Fast feed roller, 33
...Fast forward capstan metal boss, 34...
...Rapid capstan, 35...Idler, 36...Plunger, 42...
Cartridge presence/absence detection leaf switch, 43...
・Head board position detection switch. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
figure!・・・Force・Trend 2・・・Chassis Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Elongation Fig. 9 Fig. 10 Fig. 11

Claims (2)

[Claims] (1) A cartridge characterized by comprising a gear implanted in a flywheel provided on a head substrate movable with respect to the cartridge insertion portion, and an intermittent gear disposed to engage with the gear. Fast forwarding device for type tape recorders. (2) A flywheel, a gear embedded in the flywheel, an intermittent gear disposed to engage with the flywheel, and a rotation of the intermittent gear are fixed on the head base plate which is movable with respect to the cartridge searching unit. 2. The fast forwarding device for a cartridge type tape recorder according to claim 1, further comprising a lever arranged to move the head substrate relative to the substrate.