JPS60109057A - Cartridge type tape recorder - Google Patents

Abstract

PURPOSE:To reduce the play in cartridge insertion, to stabilize a tape run, and to prevent a breakage in a mechanism part by providing a stopper which receives both ends of the front surface of a cartridge onto a fixed substrate different from a movable head substrate. CONSTITUTION:A head 11, a capstan 12 for reproduction, etc., are mounted on a head substrate 9, which is rotatable over a chassis 2 around a fulcrum 10 of rotation; when the cartridge 1 is inserted along a guide roller 4 on the surface of the chassis 2, the position of the front surface of the cartridge 1 is specified by the stopper 5 provided to the chassis 2, and the flank of the cartridge 1 is further pressed by the roller part 7a of a lock lever 7 to fix the position of the cartridge 1 completely. Therefore, a shock is applied directly to neither the capstan 12 nor the head 11 during the cartridge insertion and the mechanism part is protected even in the inversion during tape insertion.

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 configuration and its problems Endless tape cartridges are extremely easy to operate, and are therefore widely used in karaoke, BGM performances, and the like. However, due to the functional drawback of not being able to rewind, the idea of a fast-forward nine device was developed 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, more parts such as motors and circuit boards are required, and there are also two cartridge insertion slots, so
This will occupy a large amount of space on the panel surface. An operational problem is that when you insert a cartridge into the playback cartridge insertion slot A and press the playback button, the song is already in the middle and you want to fast-forward.If you want to fast-forward the song, pull out the cartridge and insert the fast-forward cartridge again. It is necessary to insert the cartridge into the insertion portion B, locate the beginning of the cartridge, and then insert it into the reproduction cartridge insertion opening A again, which requires troublesome loading and unloading of the cartridge.

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

In this case, there is a limit to whether the fast-forward speed can be increased to about 2 to 4 times that of playback, and the time taken to find the beginning is second to none. It's basically in a regenerated state! , 2-4 tapes
Because the tape would pull twice as fast, the tape and head would wear out faster, and there was 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. 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 damage the capstan and pinch roller, which are the most important parts of the drive system. It had the disadvantage that the henodoku nochi was easy to change because it was easy to cause side-to-side wobbling because it was received at a single point.

OBJECTS OF THE INVENTION The present invention aims to reduce rattling when a cartridge is inserted, stabilize tape running, and prevent damage to mechanical parts caused by the cartridge when the cartridge falls over. )・') A head board is provided that is movable relative to the nozzle insertion part, and the head and capstan are placed on the head board, and both ends of the front surface of the cartridge are received on a fixed board that is different from the head board. By providing a stopper, it is possible to position the cartridge, prevent it from wobbling from side to side, and prevent damage to small mechanical parts.

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 essential parts showing the reproduction state of this embodiment. In FIG. 3, when the cartridge 1 is inserted along the guide roller 4 provided between the chassis 2 and the tape kite plate 30 on the surface of the 7-year 2, the position of the cartridge 1 is regulated by the cartridge stopper 5, and A lock lever 70, which is pulled clockwise by a spring 8 around an upright shaft 6, has a guide hole 1 provided in the side surface of the cartridge 1.
Completely fix the position of the cartridge 1 by pressing a.

In this embodiment, the drive system is constituted by a chassis 2 and a bed board 9 provided under the chassis 2. The chassis 2 and the head substrate 9 are configured so that the head substrate 9 can rotate around a rotation fulcrum 10. Head board 9
The head 11 is installed in such a way that it comes into contact with the tape surface of the cartridge 1 from the hollow part of the shear 72.

The broken 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 located between the outer peripheral surface 14a of the flywheel 14 which is press-fitted into the regeneration capstan 12 and the motor pulley 16 of the motor 15 which is removed by the motor angle part 9a protruding from the head board 9. A belt 17 is stretched horizontally to apply appropriate tension.

Gear 18 press-fitted into capstan 12 and head board 9
The cam gear 20 is attached to the raised support 19. The cam gear 2o and the gear 18 are not engaged with each other by the toothless portion 20a of the cam gear 20 in the regenerated state.

A plunger lever 22 is attached to the shaft 21 set up on the head board 9 which has been cut, and the movable iron 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 rotatable. The other end 22a of the plunger lever 22 comes into contact with a stopper 2ob provided near the outer periphery of the cam gear 20 to regulate the clockwise rotation of the cam gear 200.

A cam lever 24 is attached to a single shaft 23 set up on the head board 9, and one end 2 on the cam gear 20 side
The inner cam part 20C of the 4b-shaped cam part 20 is in contact with a position slightly lower than the closest position to the axis L. A roller is attached to the other end 24a of the cam lever 24, and a plant lever 26, which is added to a shaft 25 erected from the chassis 2, is in contact with the roller. The plant lever 26 is pulled clockwise by the spring 27, and when the position of the cam lever 24 in contact with the plant lever 26 is adjusted to fL using the method described above, the planer lever 26 is pulled clockwise by the spring 27.
The force of the spring 27 acting on the shaft 23'f of the cam lever 24 is used as a force to push the head base plate 9 in the opening direction.

There are nine pieces of springs 28 on the head board 9 that try to pull the head board 9 counterclockwise, but the force exerted by the springs 27 is smaller than the force exerted by the springs 27. The force is applied to the pinch roller 2 of the cartridge 1 by the regeneration capstan 19 attached to the head board 9.
9 is brought into contact with the force generated by the tape driving force.

Contact A30a shorted by the twisted sensing tape
, m points 1330b are insulated from the contacts of the strips and/or the yarn 2, and are rotatably attached to the chassis 2, and are lightly pressed against the tape surface by springs, so that they are not fixed. The other end of the spring is used 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, closer to the head.

Next, FIGS. 5 and 6 show the fast forwarding state of this embodiment. The cartridge 1 inserted between the chassis 1 and the tape guide plate 3 is held in the same manner 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 boss 33 The fast feed roller 31 is press-fitted into the upper part of the cartridge 1.

A fast-forward idler 35 is located at the bottom of the fast-forward capstan 34.
Or it is press-fitted. The head board 9 is pulled by the spring 28 so that the outer circumference of the fast-forward idler 35 and the inner circumferential surface 14b of the flywheel come into contact with each other. Although the force by which the head board 9 is pulled in the counter-opening direction by the spring 28 is weaker than the force by which the spring 43 presses the fast-forward roller 31 against the pinch roller 29 via the fast-forward capstan metal boss 33, each transmission force is The spring force is set to the required spring force to obtain .

The cam gear 20 attached to the vertical shaft 19 of the head board 9 is stopped at the position of the cam gear shaft 20d by one end 22a of the plunger lever 22, which is protruded several times on the shaft 21, which is mounted on the same head board 9. I'm talented. One end 24a of the cam lever 24 attached to a shaft 23 set up on another head board 9 pulls the head board 9 and a pressure lever 26 attached to a shaft 25 set up on the shear 72 counterclockwise. It will be pushed counterclockwise by the spring 28. However, the other end of this cam lever is in contact with the inner cam portion 20c of the cam gear 20 at a portion farthest from the axis of the inner cam portion 20c at a portion slightly before the end of the lowering.

In the fast-forward state, the head 11 is rotating 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 reproduction capstan is also separated from the tape and the pinch roller. Contact A30a and contact Bsob are pushed back counterclockwise to a greater extent than during playback due to the resistance of the tape being fed at high speed, but the spring maintains stable contact with the tape. The motor 15 is rotating at the same speed as during playback, and the capstan 1
The difference in speed between playback and fast-forwarding is caused by the difference between the diameter of the flywheel and the inner diameter of the flywheel inner surface 14b, and the difference between the idler 35 press-fitted into the fast-forwarding capstan and the fast-forwarding roller 31.

The following explains how to switch between next playback and fast-forward operations. FIG. 7 shows the position of each part of the head board 9 in the reproduction state, and FIG. 8 shows the fast forward state. In FIG. 7, when the plunger 36 is energized for a short time, the movable core 36a of the plunger is pulled in the direction of the arrow 38. It moves in the anti-time opening direction centering on . The other end 22a of the plunger lever is also shaft 2.
1. The cam gear 20 moves counterclockwise around the center, and the cam gear 20 loses its engagement with the stopper 20b, and the cam gear 20 moves counterclockwise to the cam lever 2.
4 is rotated in the direction of arrow 41 in the above-described manner, one end 24b on the cam side is rotated in the inner cam portion 20c.
f It will push in the centrifugal direction. The cam gear 20 is rotated in the direction of the arrow 40 because the contact portion of the inner cam portion 20 cu is at the position where the cam starts to descend. Slightly before the cam completely descends, press the 2-odd strut, one end of the plunger (22)
The rotation of the cam gear 20 is prevented because the cam gear 20 comes into contact with the point a. During this operation, the cam gear 20 does not mesh with the gear 18 because it is located at the toothless portion 20a of the intermittent gear. Therefore, when the cam lever 24 rotates in the direction of the arrow 41, the rotation fulcrum 1 is supported by the spring 28 applied to the spring hook 9b of the n-head board.
The entire head substrate 9 is rotated counterclockwise around Oi.

The state shown in FIG. 8 is that 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. Inner cam portion 20C of cam gear 20 and cam lever 24
The contact part b is on the downward stroke of the cam surface, and the cam lever 2
4 includes the spring 28 that applies the spring 9bvL of the head board mentioned above, and the pressure lever 26 that has not been installed.
Due to the regulation of
By being removed from d, the cam gear 20 moves as shown by the arrow 40.
Turn it slightly in the direction of .

When the cam gear 20 is rotated a little, the real teeth of the gear 18 and the cam gear 20 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 2Q is in the upward stroke, the cam gear 24 in contact with the inner cam is rotated in the direction of the arrow 42 by a force greater than the above-mentioned reaction force. The position where the plunger lever 22a and the cam gear stop collar 20b come into contact is shifted and the cam gear 2
When o rotates, the rotation stops and the reproducing state shown in FIG. 7 is resumed.

Next, as shown in FIGS. 9 to 12, the reproduction capstan 12 is
A method of replacing the fast feed roller 31 will be explained. Figures 9 and 1o show the reproduction capstan 12 during reproduction.
and the state of the fast feed roller 31. A fast-forwarding capstan metal boss 33 rotatably attached to a bracket 32 standing on the chassis 2 is attached to the spring-loaded portion 3.
3b, but since the hook portion 33a is regulated by the chassis part 9C, the fast-forward capstan 34, fast-forward roller 31, and idler 35 are completely disconnected from the drive system during playback. There are n. Therefore, during regeneration, the driving force is transmitted to the motor 15, belt 17, flywheel 14, regeneration capstan 12, and pinch roller 29.

From this state, when the head substrate 9 rotates counterclockwise about the rotation fulcrum 10, the reproduction capstan 12 is separated from the pinch roller 29. Further, the position of the fast-forwarding capstan metal boss 33 does not change while it is sliding on the shear 9C, and when it starts to come into contact with the shear 79di at the sliding position, it is pulled clockwise around the shaft 32 by the force of the spring 43. Then, the fast feed roller 31 is pressed against the pinch roller 29, and then the flywheel 14 is retreated by counterclockwise rotation of the head substrate 9, and the flywheel inner peripheral surface 14b and the idler 35 are brought into contact. Since the force of the spring 43 that pulls the grass feed capstan metal boss 33 is stronger than the force of the spring 28 that moves the flywheel 14 backward, the force that presses the fast feed roller 31 between the capstan 29 and idler 35 and the flywheel inner peripheral surface 14b is Since the structure is kept strong, the motor 15 belt 17 - flywheel outer circumferential surface 14a -
Flywheel inner peripheral surface 14b - idler 35 - rapid feed cab stun 34 - rapid feed roller 31 - pinch roller 29
1 driving force is transmitted to.

Figure 11 shows this fast-forwarding state.

FIG. 12. From this state, when the head base plate 9 rotates about the rotation fulcrum 10 in the opening direction, the flywheel 14 also moves forward. As the flywheel 14 moves forward, the pressure between the flywheel inner circumferential surface 14b and the idler 36 is released, and then the fast-forward capstan metal boss 33 is pushed by the steering wheel 9d and rotates counterclockwise around the shaft 32, resulting in fast-forwarding. The pressure bond between the roller 31 and the Vinci roller 29 is also released. As the rotation of the head base plate 9 further progresses, the two drive shafts of the reproducing carburetor 12 and the fast-forwarding roller 31 are replaced by one or more methods of returning to the reproducing state shown in FIG.

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

Since the motor 16 flywheel 14 and the head 11 are mounted on the head board 9 that rotates, 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. Since the twisted head 11 and the reproducing capstan 12 are also placed on the head substrate 9, the structure is such that the reproducing capstan 12 and the head 11 can be easily retracted 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 which is positioned by the stopper 5. Therefore, the pinch roller pressing force is stable and has better followability than before. 〇Also, during playback, fast forward roller 3
1. The idler 35 and other fast-forward mechanisms are separated from the drive system 9 and do not have any adverse effect on playback. The structure is such that it is easy to rotate the head board 9 slightly in the counterclockwise direction during playback to release the pressure between the playback capstor/12 and the pinch roller 29, thereby providing a temporary stop function.

Furthermore, the stopper 6 provided on the cartridge support 2 allows for accurate positioning of the cartridge with less left and right play compared to when the cartridge is supported on the front with a conventional fixed capstan. 1) There is less impact transmitted when inserting the nozzle, and the mechanism can be protected even if it falls over when inserting the tape.

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 groove and the tape.

Since the rapid forwarding T) is performed by a dedicated rapid forwarding roller 31, a high tape driving force can be applied even with a low pressing force due to the rubber roller, and there is little influence on the tape. Further, since the driving force for fast forwarding is taken out 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 about 10 times that of the flywheel 14 in the same direction. By adopting this configuration, the motor rotation speed can be kept unchanged and the current value can be kept low.

Although this embodiment shows an example of replacing two drive shafts with one motor, it goes without saying that the same effect can be obtained even if a motor is used in Method 11. be.

Effects of the Invention The present invention enables accurate positioning of the cartridge and suppresses side-to-side wobbling, so stable head touch and pinch-low 2 drive can be achieved. There is no direct impact of the cartridge on the drive unit or head,
This has excellent effects such as being able to prevent the drive unit and head from being damaged by the cartridge even when the set falls over.

[Brief explanation of the drawing]

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. 4 is a side view thereof, and FIG. 5 is a perspective view of a conventional karaoke apparatus. 1 and 6 are side views of the present embodiment in the fast-forward state, FIGS. 7 and 8 are plan views of the head base plate in the playback and fast-forward states, and FIG. 9 is a schematic view of the playback state. Plan view of section, 10th
The figure is a side view, FIG. 11 is a plan view of the main part in a fast forward state, and FIG. 12 is a side view. 1yJ - Torinoji, 2...7 yarn, 6...stopper, 9...head board, 10-rotation fulcrum, 11...head, 12-...capstan for reproduction, 14 flywheel, 15 ...Motor, 17 Belt, 18 Gear, 20 Cam gear, 22 Plunger lever, 24 Cam lever, 26 Pressure lever 129 Pinch roller, 31...
Rapid feed roller, 33... - Rapid feed capstan metal boss, 34... Rapid feed capstan, 35...
Idler, 36... Plunger O Figure 1 Figure 2 Figure 12

Claims (1)

[Claims] A head substrate movable with respect to the cartridge insertion part is provided, the head and capstan are placed on the head substrate, and a stopper for the front of the cartridge is provided on a fixed substrate different from the head substrate. Cartridge type tape recorder.