JPS59129960A - Rotating mechanism of tape recorder - Google Patents

Abstract

PURPOSE:To switch a rotating speed by a feather touch by constituting a rotary system driven by a motor which can be rotated forward and backward, of a permanent magnet, a coil, a gear, etc., and switching a transfer means by a repulsion force of a magnetic field. CONSTITUTION:When a belt 12 wound to fly-wheels 5, 6 and pulleys 10, 13 is rotated counterclockwise by a motor 2, a winding gear 11 is at a position 11a, and a tape is wound to a winding turntable 3. A winding gear shaft 21 is magnetized to N and S poles, and when a current is made to flow so as to energize the shaft 21 to the lower side, an arm 35 rotates centering around a shaft 35a, the gear 11 is shifted to a position 11a, and a winding mode is set. When the shaft 21 is energized to the upper side by making a reverse current flow, the arm 35 rotates, but the gear 11 is engaged with a small gear 3a or 4a, and the mode is shifted to a fast forward or rewinding mode. Accordingly, the gear 11 can be switched by a feather touch, and a simple mechanism having one motor only can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a rotating system particularly suitable for providing a small 7-edge touch mechanism, and moreover, to a new rotating system configured to operate with a small current.

[Prior art]

Conventional small reproduction-only mechanisms include one-sided regeneration mechanism and a reverse mechanism, but the mechanism may be operated manually, or only regeneration may be performed using the power of a motor.

However, since the feather-touch operation mechanism of high-class decks, which can be operated by simply turning on a switch, has not yet been commercialized, it has the disadvantage of heavy operating force. There are large touch mechanisms such as decks, but they require large currents.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotary drive system suitable for a small tape recorder that operates in a feather-touch manner.

[Summary of the invention]

The present invention is a turntable for winding and rewinding, in which a single motor is attached so as to be able to rotate in forward and reverse directions.

It has a rotation mechanism that transmits rotation, and the rotation mechanism selectively transmits rotation to a large gear and a small gear provided on the turntable, thereby controlling winding during playback and fast forwarding 9 rolls. I set it to do the reversal.

Embodiments of the present invention will be described below based on the drawings.

[Embodiments of the invention]

FIG. 1 is a diagram showing an embodiment of the present invention, in which the methotres is seen from above, where 1 is the chassis base 2 is the motor, 6 is the take-up side turntable, and 4 (the unloading side). Turntable, 7 is the intermediate pulley, 5 is the forward flywheel, 6 is the riff (-) fly foil. 14 is the record n-
, RAD, 15 is a forward pressure roller, 16 is a reflux pressure roller, 17&'! It is a cassette holder and is arranged as shown in the figure.・Moreover, as shown in Fig. 2, it is a head stand on which the recording/reproducing head 14 is placed, and it is rotatably mounted around 15α as a fulcrum, so that it moves forward at zero during playback and reads the tape. , and perform playback. In the present invention, the switching to the playback mode (explanation will be omitted, and the winding method during playback will be described in detail below.12)
The belt connects the motor 2 to the motor tuff.

- The power transmitted from the rope 13 is wound as shown in FIG. Reference numerals 8 and 9 denote anti-rolling flywheels, which rotate in the opposite direction to the flywheels 5 and 6. In Fig. 4, the power of the intermediate flywheel rotates integrally with the shaft 7α, and rotates in the opposite direction to the flywheels 5 and 6. The rotation is transmitted to the winding gear 11 which is always in mesh with the press-fitted intermediate gear 10.The winding gear 11 rotates around the winding gear shaft 21.FIG. 4 shows the regenerating state. The winding gear meshes with gear 3.6 or 4h, and the torque generated by the friction between the winding torque compression spring 26 and felt 3C or 4C shown in Figure 8 is shown. It is transmitted to the rotating body 3 or 4 and wound with a constant torque 1. In this example, a transmission mechanism such as felt was used, but even if a method using permanent magnets, which has been increasingly used in recent years, is used, the same result can be achieved. You can get the effect of

FIG. 5 is a diagram when the winding mechanism is working during regeneration. At this time, when the belt is rotating counterclockwise, the winding gear 11 is at the position 11α, which is on the forward side. The tape is wound to the right due to pressure. Next, when the belt is rotating to the right, the winding gear 11 moves to 11b.
There is a position VrC, which makes it possible to wind the tape from right to left in the reflux direction and play or record it.

The winding gear shaft 21 has an N pole and an S pole formed as shown in FIG. In Figure 4, a current is applied to the lower side of the coil so that the north pole is energized, and the upper side is the south pole, so that the current is applied to the shaft 21. The system 35 rotates around 65α. The rotating blade and direction are determined by the rotation direction of the belt.
When the belt is rotating counterclockwise in Fig. 5, the voltage is 11α to the right, and when the belt is rotating clockwise, the voltage is 0V to the left.
Move to a11). Also, the arm 35 is oscillated by the gear 10 and the arm 65, as was done in conventional mechanisms.
It is also possible to design the part so that frictional force is constantly generated.

Next, a case will be described in which fast forward nine rewinds are performed in this mechanism. FIG. 6 shows the state of fast forwarding or rewinding, and FIG. 7 shows the gear meshing state. To the winding gear shaft of the permanent magnet 21, a current opposite to the current passed through the coil portion 23 by the wire rod 24 during regeneration is passed to generate an N pole on the upper side of the coil and an S pole on the lower side. By applying a current to the shaft 21, a force is applied upward to the shaft 21 to frictionally engage the shaft 21 with the bearing part 22.
Swinging by the force generated by the torque is the same as during playback described above, and fast forwarding or rewinding is performed by turning down the winding gear 11 and setting the 4 small gears to 6α or 4α. be able to.

Next, FIG. 9 shows another method for vertically moving the winding gear 11.

The permanent magnets 29 and 29' are fixed so that the inside of each permanent magnet has the same polarity. Next bearing part 3o.

30' and winding gear shirt) 32(B) are arranged so that they can freely rotate and move up and down. However, the shaft 62 is not magnetic or sexual. Next, a magnetic material 531 is fixed to this shaft 62. 28 is a cylindrical magnetic material. Coil 3
3 is wound around a bobbin 37 and the end is taken out as a wire rod 34. Next, a current is passed through this coil section, and when it is on the upper side, it passes through the magnetic path 29 and generates a magnetic field such that the attraction force by the permanent magnet becomes 0 or less, thereby moving the shaft 32 downward and gearing it. .

5 so that the gear 11 and 375 or 46 are engaged with each other to perform the regenerating winding as described above. Next is the magnetization.

The shaft 62 is moved upward by applying a field.

By doing so, the gear 3α or 4α and the gear 11 are engaged by 15 degrees, and the fast forwarding or rewinding operation can be performed as described above.

(Centering and power assist) 4%Nl? ) Next, we will explain the mechanism that uses +11 motor torque to press the head and pressure roller together in order to bring it into the regeneration state, and the mechanism that ensures that the arm 35 is always at the center when stopped. Fig. 10 The relay gear 38, which is always in mesh with the flywheel gear 5a, is a trigger magnet which is fixed to the power assist gear 50 and has N and S poles magnetized as shown in FIG.

1. Place the trigger magnet 38 with a smaller gap between it and 39A of the regeneration magnet 39, and move it to the position shown in FIG.
Place it at 1... so that the missing tooth part of is in the position as shown in the figure. Next, let's put it into play mode.

When trying to run the tape in the forward direction, current is applied to the coil 39α so that the north pole appears at the part 59C and the south pole comes out the part 39d. Based on the principle of a motor, the power assist gear 50 becomes the tenth pole. Rotating to the left in the figure, the toothless portion 50g meshes with the gear portion 37b of the relay gear 67 and starts rotating to the left.・At this time, as shown in FIG.
Hold down the float and fix it, each 52f? , 53
1? The parts 54α and 54b are fixed in place by applying pressure inwardly.Since counterclockwise rotation has started, the cam member 56α of the forward side rotating cam member 5
By lifting the pin portion 56α of the head plate operating member 56 with a cam, the head plate operating member 56 is moved to the position indicated by the dashed line as shown in FIG.

The reheading plate 18 is lifted until the head 14 comes into pressure contact with the tape, and the tape is played back. At this time.

As shown in FIG. 14, the power assist gear 50 moves to a position that is 1800 degrees different from the position where the toothless portion 50e and the toothless portion 50f are in the stopped state.Then, the regeneration magnet 39 shown in FIG. 10 also rotates 1800 times. The south pole switches places, and the south pole approaches and stops due to the magnetic material 696.The head plate operating member 56 has returned to the stop position.Then, the protrusion 18α of the head plate 18 moves to the position 18α'. The playback position is maintained by locking the lock plate 57. Reference numeral 58 denotes a spring member, which applies a force to the lock plate 57 and the head plate operating member 56. Distinguishing between reverse and forward and tape Now that we have explained the winding process, we will now explain what to do about the pressure roller.Power assist gear 5
0 is a pin 50 molded into one piece! I and 50A y are formed as shown in FIG. 16, and the grooves 59A and 59.
! The Geneva gear 59 having the number 7 is placed in the position shown in FIG. 16 when stopped. Next, when the power assist gear 50 starts rotating, the power assist gear 50 starts rotating as described above.

When rotating in the word direction, that is, to the left, pin 50A and groove 59°h
, the Geneva gear 59 rotates clockwise.

At this time, it rotates against the brake elastic member 55 acting as a stopper in the recessed portion 59g. .

Figure 17 shows the deck in the forward side playback state.

From the stopped state indicated by the dashed-dotted line, which is the position of the pressure roller selection member 60, the forward 1 is first moved to the reproducible position via the U-shaped curved portion 6Q that is constantly engaged with the round bottle portion 5t. Due to the engagement between the pin 50h and the groove 59A, the brake elastic members 55 and 5 are moved to the left in FIG.
It is stopped by locking with Of. In this state, the bending part 6OA, which was at the stop position, moves to the position <60b as shown in the figure.
Reverse side pressure.

In other words, push the protrusion 66α of the landing roller arm 66 downward.

The pressure roller 16 is prevented from driving the tape, and the pressure roller 16 is
Similar bending part on the forward side which was in position C. 600 from its stopping position forward side crimping roller arm 65
With the protrusion 65 (Z free), move it forward with the compression spring 19 so that the tape can run.This poetic sentiment 59y,
59A is nearby and the brake elastic member 55 is arranged separately, the reason why the pressure roller selection member 60 is operated at a timing earlier than the speed at which the head 14 moves forward than in the conventional Geneva. Since it becomes possible to operate the crimp opening selection member 60 with a light force,
This is the best way to attach it to a small, hand-held mechanism that operates on a voltage of about 3V. 15. Also, when reproducing on the reverse side, it can be realized by rotating the power assist gear 5o in the opposite direction to the method described above, so the explanation will be omitted.

[Stop operation] (Stop from fast forward 2 rewind) 2. When stopping a set that is in the playback, fast forward or rewind operation state, when stopping from each fast forward or rewind operation, first When the gears are engaged in the position shown in the figure, when the stop operation is performed, the current flow is changed so that the motor 2 is rotated in the opposite direction to the rotation direction that is being fast-forwarded or rewinded. Coming away. and arm 6
5 is the aforementioned felt or permanent magnet in the opposite direction, or
The thread returns to the center due to the frictional force generated by passing current through the coil. -Here, the position i4 of the arm 35 will be explained. Arm "35" groove 35h cut convex shape 3
A groove is formed in 5c to determine the center position of the arm, and this part is used as the reference position for the seven-turn position. Next, a positioning member 61 for the arm 61 is provided, which is rotatably arranged around 61α as a fulcrum, a magnetic member 62 is fixed to the member 61 with some degree of freedom, and a pin portion 61h is provided. is in contact with the groove portion 61b and the groove portion 35c.・Next, 66 is an on-type magnet, that is, it has both a permanent magnet and a coil, and when a current is passed through the coil 66, the force of the permanent magnet disappears and the arm 61 becomes free, so it is fast forwarded as described above. Or you can rewind. As described above, when the stop button is pressed next to stop the motor 2, the motor 2 is rotated in the opposite direction to the direction in which it was previously rotating, the gears are disengaged, and the motor 2 returns to the center. The arm 65 that has returned now rotates the arm positioning member 61 clockwise around 61α using the cam groove 35C, and approaches the position where the magnetic material 62 comes into contact with the on-type magnet 63. 1...Then, it is pulled by the attractive force of the permanent magnet of the magnet 62, and the arm 35 is held at the center by the pin portion 61b. When the motor 2 reaches this position, the rotation of the motor 2 is stopped and the motor 2 is stopped.

[How to change from playback mode (forward or reverse) to stop state]

As for the playback state, as described above, the forward state shown in the drawing will be explained, and when it is on the reverse side, the reverse is true, so redundant explanation will be omitted. During the forward reproduction state, the trigger magnet 68 is reproducing with its S and N poles in the opposite direction to the N and S pole positions in FIG. 10.・Next, when you press the stop button, the regeneration magnet 39
By applying a current to , it is rotated clockwise around 50α. At this time, the motor 2 rotates clockwise, which is opposite to the previous rotational direction, and reverses the power assist gear 50 to the meshed state, so that the head plate operating member 56 is rotated as shown in FIG. Since the pin portion 56α is returned by the force of the spring 5, the rotation of the gear 50 causes the pin portion 56α to
As the forward side rotary cam member 53 rotates, the inner surface 56d of the forward side rotary cam member 53 on the opposite side (second locus) of the cam 56α is rotated against the elastic member 54 to form a surface 53b.
It moves leftward along the bin portion 56α with the center at , returns to the original stopping position, and stops in the shape shown in FIG. 11.

By returning the Geneva gear 59 through the groove 59h of the Geneva gear 59 through the pin 50AK, the pressure roller selection member 60 is returned to the stop position. Also, to stop at this time,
It is necessary to unlock the head plate 18, and for this purpose, the stop gear 51 is arranged at a position almost symmetrical to the relay gear 37.
Moreover, this gear is equipped with a cam portion 51α, and a compression spring 67 and a convex portion 51.
and the concave portion of the shingle base 1, and since it is positioned symmetrically with the relay gear 67, it does not rotate during one regeneration. When this is stopped, 18α is locked at the position 18a, since it is in a position where it does not jump from 57.6 in FIG. 15.・Next, stop gear 51
When the lock plate 57 starts rotating, the lock plate 57 is opened as shown in Fig. 18.
Jump to the left and unlock the head plate 18.

〔Effect of the invention〕

According to the present invention described above, it is possible to perform gear switching such as fast forwarding and rewinding by using the vertical movement of the gear, and it is possible to minimize the distance of vertical movement. Yes, and fast forward.

To switch the direction of rewinding, a solenoid-type rotation switching mechanism is used, which switches the motor between forward and reverse directions and moves up and down, and is also the center of rotation of the gear.The repulsion between a single permanent magnet and a coil is used to minimize the current. The fact that it is compact and can be changed using a switch like a deck is revolutionary, and since it is possible to use only one motor, it is economical and easy. mechanism. From the above, if this mechanism is used, it is possible to make a compact feather-touch operation tape recorder, and its industrial value is also significant.

[Brief explanation of drawings]

Fig. 1 is a front view of a mechanism showing an embodiment of the present invention, Fig. 2 is a side view thereof, Fig. 6 is a front view showing the rotation system of the mechanism of the invention (c), and Fig. 4 is a diagram of the switching mechanism. 5 is a diagram of the winding state during reproduction, FIG. 6 is a diagram of the winding state of fast forwarding and rewinding, FIG. 7 is a sectional view of the winding state of fast forwarding and rewinding, and FIG. A sectional view of the turntable, FIG. 9 is a sectional view of the main part showing one embodiment of the switching mechanism, FIG. 10 is a sectional view of FIG. 1, and FIGS. 11(a) and (II)) show the power assist section. The figure shown in FIG. 12 is a perspective view of the power assist cam,
13 to 18 are operation/explanatory diagrams of power assist. 1. Rainbow base, 2. Motor, 3. Right turntable, 4. Left turntable, 5. Forward flywheel, 6. Reno flywheel,
8, 9: Anti-rolling flywheel, 7: Intermediate pulley, 10: Intermediate gear. 11: Winding gear 1, 12: Drive belt, 15: Forward crimping roller, 16: J-berth crimping row, 19, 20: Crimp spring, 21: Winding gear shaft, 22: Bearing section, 23: winding coil,
24: Wire rod, 25: Compression spring, 17: Cassent holder, 26: Compression spring for winding torque, 18: Head plate, 27: Bobbin, 28
: Core part, 29,29r: Permanent magnet, 60,6
0': Bearing stain 1: Iron-based magnetic material, 62: Intermediate pulley shaft, 36: Coil, 34 = Wire, 65
: Arm, 36: Iron plate bottom plate, 37 = Relay gear,
5α: Flywheel gear, 68: Trigger magnet, 9: Regeneration magnet, 50: Power assist gear, 51: Stop gear, 52: Reno side rotating cam member, 53: Forward side rotating cam member, 54
: elastic member, 55 elastic member for nib brake, 56: head plate operating member, 57: locking plate, 58 spring member, 59: Geneva gear, 60: pressure roller selection member,
65: Forward side pressure roller arm, 66: Reverse side pressure roller arm 61: Arm positioning member, 62: Magnetic member, 66: On-type magnet, 66: Coil, 67: Compression spring. Agent Patent Attorney Takahashi θ Hitsuji 3 Figure Ne 4-Figure I90 11th Country Go-) No./3 Figure 3 Kaya 74-Figure 150 Figure 7g Amendment to figure procedure (spontaneous) Indication of case 1988 Patent application Title of invention No. 3372
Patent applicant name (5101 Hitachi Co., Ltd. II)
Manufacturer Director: Hitachi, Ltd., Hitachi, Ltd., 5-1 Marunouchi-chome, Chiyoda-ku, Tokyo 100, Japan 1. Mori 21
2-1111 F large representative) Correction. Contents Figure '5 - Figure '8' - Figure '8/Appendix Description '1 Title of the invention Rotating mechanism 2 of a tape recorder Claims Fast forwarding 9 rewinding, playback, recording, and stop operations A tape recorder is controlled by electrical logic so that mode conversion is possible by electrical signals, and includes a motor capable of forward and reverse rotation, and a rotation system driven by the rotation of the motor. The rotating system is composed of a permanent magnet, a coil, and a torque transmitting means such as gears, and the difference in tape winding speed between playback or recording and fast forwarding or rewinding is determined by applying electricity to the coil section and using the magnetic field generated by the permanent magnet. A rotating mechanism for a tape recorder, characterized in that the rotating speed is changed by switching torque transmitting means such as gears by utilizing the repulsion between the coil and the magnetic field. 5. Detailed Description of the Invention [Field of Application of the Invention] This invention The present invention relates to a rotating system particularly suitable for providing a compact feather-touch mechanism, and more particularly to a new rotating system configured to operate with a small current. [Background of the Invention] Conventionally, compact tape recorder mechanisms have been designed to operate on one side. There is a reverse mechanism, but it was common for the mechanism to be operated manually, or for regeneration only, using the power of the motor. There are no high-class decks that allow the mechanism to operate by simply turning on a switch, but they have not been commercialized, so they have the disadvantage of being heavy to operate.Furthermore, the Feather Touch mechanism has There are large ones such as , deck, etc., but they require a large current. [Object of the Invention] An object of the present invention is to provide a rotational drive system suitable for a small cheap coater that operates with a feather touch. [Summary of the Invention] The present invention has a rotation mechanism in which one motor is attached so as to be rotatable in forward and reverse directions and transmits rotation to a turntable for winding and rewinding, and the rotation mechanism is installed in the turntable. By selectively transmitting rotation to the large gear and the small gear, winding, fast forwarding, or rewinding during playback is performed.Examples of the present invention will be described below based on the drawings. Embodiment] Fig. 1 is a diagram showing an embodiment of the present invention, when the mechanism is viewed from above, 1 is a chassis base 2 is a motor, 3 is a take-up side turntable, and 4 is a payout side turntable. 7 is an intermediate pulley, 5 is a forward flywheel, and 6 is a reverse flywheel. 14 is a recording/reproducing head, 15 is a forward pressure roller, 16 is a reverse pressure roller, and 17 is a cassette holder, which are arranged as shown in the figure. There is a second
As shown in the figure, numeral 18 is a head stand on which the recording head 14 is placed, and is rotatably mounted around a fulcrum 15a, so that it rotates forward during playback and comes into contact with the tape for playback. However, in the present invention, the switching to the reproduction mode will not be explained, and the winding method during reproduction will be described in detail below. Reference numeral 12 is a belt which is wound as shown in FIG. 6 in order to transmit the power transmitted from the motor pulley 16 attached to the motor 2. 8 and 9 are anti-rolling flywheels, which rotate in the opposite direction to the flywheel 5.6. Figure 4 shows that the power of the intermediate pulley 7 is transmitted to the shaft 7.
The figure shows a state in which the rotation is transmitted to the winding gear 11 which rotates integrally with the shaft 7a and is always in mesh with the intermediate gear 1° which is press-fitted into the other side of the shaft 7a. And the winding gear 11
rotates around the winding gear shaft 21. Further, FIG. 4 shows the winding state when the bed is in a bed state, and the winding gear 11 meshes with the gear 3b or 4b, and the winding torque compression spring 26 and the felt 3C or 4c shown in FIG. The friction torque generated by this is transmitted to the turntable 3 or 4, and the tape is wound up with a constant torque. In this embodiment, a transmission mechanism such as a force or an elbow is used, but the same effect can be obtained by using a method using a permanent magnet, which has been increasingly used in recent years. FIG. 5 shows the regenerating state of the winding mechanism. At this time, when the belt is rotating counterclockwise, the winding gear 11
is at position 11a, and the tape is wound in the forward direction, that is, from left to right. Next, when the belt is rotating clockwise, the winding gear 11 moves to 11b.
position, which allows the tape to be wound in reverse direction, ie, from right to left, for playback or recording. The winding gear shaft 21 is magnetized with its N and S poles as shown in FIG. A current is applied so that the lower side of the coil is the N pole and the upper side is the S pole so that the arm 35 is energized by the torque generated by the frictional force between the shaft 21 and the bobbin 27.
Rotates around 5a. The direction of rotation is determined by the one-way trap of rotation of the belt; when the belt rotates counterclockwise in FIG. 5, it moves to position 11a, and when the belt rotates clockwise, it moves to position iib. The rotation of the arm 35 is as follows:
It is also possible to design the gear 10 and the arm 35 to constantly generate frictional force, as has been done in conventional mechanisms. Next, a case will be described in which fast forwarding and one rewinding is performed in this mechanism. FIG. 6 shows the state of fast forwarding or rewinding, and FIG. 7 shows the gear meshing state. For the winding gear shaft 21 made of a permanent magnet, a current opposite to the current passed through the coil portion 25 by the wire 24 during regeneration is passed to the upper side of the coil. , generates an S pole on the lower side and applies a force that pushes it upward to the bearing part 2.
2 and rotate the arm 55 by the force generated by the torque, which is the same as in the above-mentioned regeneration, and the engagement of the winding gear 11 is controlled by the small gear 3.
Fast forwarding or rewinding is possible by setting a or 4a. Next, FIG. 9 shows another method for vertically moving the winding gear 11. Permanent magnet29.
29' are bearing parts 30, 30' fixed so that opposite sides thereof have the same pole, for example, N poles, and a winding gear shirt.32B is arranged to be freely rotatable and vertically movable. However, the shaft 32 is not made of magnetic material. A magnetic material 31 is fixed to this shaft 32. Reference numeral 28 is a cylindrical magnetic material, and a coil 33 is wound around a bobbin 68, and the end of the coil 33 is taken out as a wire 34. Now, when the magnetic material 31 is magnetized and attracted by the upper magnet 29, when a current is passed through the coil 33 so as to generate a magnetic field in the opposite direction to the magnetization direction, the magnetic material 31 is attracted to the upper magnet 29. A repulsive force acts on the lower magnet 29', and an attractive force acts on the shaft 3.
2 can be moved downward. It is also clear that if the current is applied in the opposite direction, the shaft 32 will move from the lower side to the upper side. (Centering and Power Assist Mechanism) Next, we will explain a mechanism that presses the head and pressure roller using motor torque to bring the machine into a regenerating state, and a mechanism that ensures that the arm 35 is at the center when stopped. 10th
In the figure, the relay gear 7 is always engaged with the flywheel gear 5a, and the trigger magnet 38 is fixed to the power assist gear 50, and at the same time, the N and S poles are magnetized as shown in FIG. Reproduction magnet 39
The gap with one end 59b is small, and the toothless portion 50e of the power assist gear 50 is positioned as shown in FIG.
, 50f are arranged as shown in the figure. Next, the case of entering the playback state will be explained. When trying to run the tape in the forward direction, turn the coil 5 so that the N pole is at the part 59c and the S pole is at the part 39d.
When a 92K current is applied, the power assist gear 50 starts to rotate counterclockwise as shown in Fig. 10 due to the principle of a motor.
e meshes with the gear portion 37b of the relay gear 37 and continues to rotate. Here, as shown in FIG. 11, the reverse rotating cam member 52 and the forward rotating cam member 53 are connected to the elastic member 54 at a fulcrum 52b. The float of 55b was suppressed, and they became 52c and 55c, respectively.
The portions 54a and 54b are elastically fixed in place by applying pressure inwardly. Since the rotation has started in the counterclockwise direction, the forward side rotating cam member 55
The cam portion 55a is connected to the bottle portion 5 on the head plate operating member 56.
By lifting the head plate 6a in the direction shown in FIG. 13, the head plate operating member 56 is moved to the position indicated by the dashed line, and thereby the head plate 18 assumes the tape playback position. The knocker assist gear 50 at this time is 18 when the toothless portion soe and the toothless portion 50f are in a stopped state as shown in FIG.
Move to t by 0° difference. Then, the reproduction magnet 39 in FIG. 10 also rotates 180 degrees, so the N and S poles switch places, and the 8-pole side of the magnetic material 39b K approaches and stops. After lifting the head plate 18 to the tape playback position, the head plate operating member 56 returns to the stop position. At this time, as shown in FIG. 15, the protrusion 18a of the head plate 18 is
It moves to position 18a' and locks with the locking plate 57 to maintain the reproduction position. Reference numeral 58 denotes a member that applies force to the locking plate 57 and the head plate operating member 56.Now that we have explained about tape winding, we will now discuss what to do about the pressure roller. As shown in Fig. 16, the power assist gear 50 consists of pins 50g and 50h formed into one piece.
When the mechanism is in a stopped state, a Geneva gear 59 having grooves 59h and 59g that engage with this pin when the power assist gear 50 starts rotating is arranged as shown in the figure. As explained in the previous section, when the power assist gear 50 starts rotating, the Geneva gear 59 rotates clockwise because the pin 50h and the groove 59h engage when the power assist gear 50 rotates in the forward direction, that is, in the counterclockwise direction. At this time, the Geneva gear rotates against the brake elastic member 55 acting as a stopper in the recess 59e. FIG. 17 shows the regeneration state on the forward side, and the pressure roller selection member 600 is moved from the stopped state position indicated by the dashed line to the forward regeneration position via the U-shaped groove 60g that is always engaged with the round pin portion 59i. Bin 50h and groove 5 mentioned in
The brake elastic member 55 is moved by engagement with the brake elastic member 55.
It is stopped by locking with and 59f. In this state, the bent portion 60b' which was at the stop position moves to the <60b position as shown in the figure, and the projection 66a of the perspective side pressure roller arm 66 is moved downward, that is, the pressure roller 16 does not drive the tape. and the foyer located at 600')' I
From the stop position of the similar bent portion of 11, release the protrusion 65a of the forward side pressure roller arm 65 of 60C and move it forward using the pressure spring 19 so that the tape can travel. This mowing groove 59g, 59tl force; nearby and separate brake elastic member 55 force 5 is:
In terms of timing, the pressure roller selection member 60 is operated with a pusher at 1 o'clock earlier than the speed at which the head 14 moves forward, and the pressure roller selection member 60 is operated with a single force. This is to make things more functional, and it is the best method for attaching it to a mechanism that operates on a voltage of about 3V in one day.Also, when renovating a home, This can be realized by rotating the winder assist gear 50 in the opposite direction to the method described above, so the explanation will be omitted. [Stop operation] (Stop from fast forward 2 rewind) Fast forward and rewind operation status When stopping the set in
The gears engage at positions 11C and 11d in the diagram to change the flow of current so that the motor 2 is rotated in the opposite direction to the rotation direction that is being fast-forwarded or rewinded by performing a stop operation. . Then, the arm 35 returns to the center due to the frictional force generated by passing current through the felt, permanent magnet, or coil described above, and the gears are separated from each other. Here, positioning of the arm 35 will be explained. arm 35
A groove 55b is cut in the convex shape 55G to form a groove for setting the center position of the arm, and this part is used as a reference position for measuring the center position. Then Boo. A center positioning member 61 of the Muro 5 is provided, which is rotatably disposed at the fulcrum 61a'', the magnetic member 62 is fixed to the member 61 with some degree of freedom, and the pin portion 61b are the groove portion 35b and the groove portion 35c.
is in contact with. Next, 63 is an on-type magnet, that is, a magnet that has both a permanent magnet and a coil, and when current is passed through the coil 64, the force of the permanent magnet disappears and the arm 61 becomes free, so it is fast forwarded as described above. Or you can rewind. As described above, when the stop button is pressed next to stop the motor 2, the motor 2 is rotated in the opposite direction to the direction in which it was previously rotating, the gears are disengaged, and the motor 2 returns to the center. The arm 35 that came back here is a cam groove! I50 rotates the arm positioning member 61 clockwise around 61a to remove the magnetic material 62.
is brought close to the on-type magnet 63 at the point 1 where it contacts. Then, by the attraction force of the permanent magnet of the magnet 62, the arm positioning member 61 engages the pin portion 61b with the groove portion 55C and holds the arm 65 at the center. After that, the rotation of the motor 2 is stopped to bring it to a stopped state. [How to change from play mode (forward or renovate) to stopped state] The method to change from play mode to stopped state is explained in the forward state, and when in the renovate side, the reverse is true, so redundant explanation will be omitted. Therefore, in the previous forward playback state, the trigger magnet 38 is the north pole in the stop state as shown in Figure 10.Since it is rotated 180 degrees from the position of the south pole light, the south pole and north pole are in the opposite direction. Next, when you press the stop button, a current flows through the regeneration magnet 59, and the power assist gear 5 is activated.
0 starts rotating to the right around 50a. Next, the motor 2 rotates clockwise, which is opposite to the rotation direction in the regeneration state, and the power assist gear 50 meshes with the relay gear 67 and reverses. At this time, as shown in FIG. 18, the head plate operating member 5
6 has returned to the bottom by the force of the spring 58, so the pin part 5
6a, the forward side rotary cam member 53 is an elastic member according to the rotation of the power assist gear 50, and the forward side rotary cam member 53 moves on the inner surface 53d (second locus) opposite to the cam portion 5'3a of the forward side rotary cam member 55. against 54,
Since it rotates to the left around 53b, the pin portion 56
a can maintain the lowered position. If the current flowing through the regeneration magnet 69 is cut off while the gear 50 is rotating and the gear 50 returns to its original stop position, the pin soh and Zeneno will stop as shown in FIG.
By returning it, the pressure roller selection member 60 is returned to the stop position. Also, it is necessary to unlock the lifted head plate 18, and for this purpose, the stop gear 51 is connected to the power assist gear 50.
The relay gear 67 is disposed approximately symmetrically to the intermediate gear 67, and this gear is provided with a cam portion 51a, and
The gear 51 is equipped with a compression spring 67 and a convex portion 51' so that it always stops at a fixed position after rotating during playback.
b and the recessed portion of the chassis base 1, and since it is positioned symmetrically to the relay gear 37, it does not rotate during playback. During playback, 57 in Figure 15
188 is locked in position 18a' because it is in a position where it cannot kick b. Next, when the stop gear 51 starts rotating, the lock plate 57 is kicked to the left as shown in FIG. 8 to unlock the head plate 18. [Effects of the Invention] According to the present invention described above, it is possible to perform gear changes such as fast forwarding and rewinding using the vertical movement of the gear, and it is possible to minimize the distance of vertical movement. It's possible, and it's fast forwarding. To switch the direction of rewinding, a solenoid-type rotation switching mechanism is used, which switches the motor between forward and reverse directions and moves up and down, and is also the center of rotation of the gear.The repulsion between the permanent magnet and the coil is used to minimize the current. The fact that it is compact and can be changed using a switch like a deck is revolutionary, and since it has become possible to use only one motor, it is economical and simple. It can be a mechanism. From the above, if this mechanism is used with yfU, it will be possible to produce a compact cassette tape recorder with feather-touch operation, and it will have great industrial value. 4. Brief description of the drawings FIG. 1 is a front view of a mechanism showing an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a front view showing a rotation system of the mechanism of the present invention, and FIG. The figure is a sectional view of the switching mechanism in the playback state, Figure 5 is a winding state diagram during playback, Figure 6 is a winding state diagram during fast forwarding and rewinding, and Figure 7 is a sectional view during fast forwarding and rewinding. , FIG. 8 is a sectional view of the turntable, FIG. 9 is a sectional view of essential parts showing an embodiment of the switching mechanism, and FIG. 10 is a tomographic view of FIG. 1.
Fig. 11(a), ω) is a diagram showing the power assist part, Fig. 12 is a perspective view of the power assist cam, and Fig. 13 to 18
The figure is an explanatory diagram of power assist operation. 1 Rainbow base, 2: Motor 1.13: Right turntable, 4: Left turntable, 5: Forward flywheel, 6: Reverse flywheel, 8,
9: Anti-rolling flywheel, 7: Intermediate pulley, 10: Intermediate gear 11: Winding gear% 12:
side belt, 15: forward pressure roller, 16:
Reverse pressure roller, 19, 20: pressure spring,
2: winding gear shaft, 22: bearing section, 2
3: Winding coil 24: Wire rod, 25: Compression spring, 17: Cassette holder, 26: Compression spring for winding torque, 18 Two head plates, 27: Bobbin,
28: Core part, 29.29': Permanent magnet, ! 1
0. ．． ! 10': bearing part, 31: iron-based magnetic material, 32
: Intermediate pulley shaft, 56=coil, 54:
Wire rod, 55: Arm, 36: Iron plate bottom plate, 3
7: Relay gear 5a: Flywheel gear, 58:
) JJ magnet, 39 Regeneration magnet, 50: Nower assist gear, 51: Stop gear, 52: Reverse rotating cam member, 53: Forward rotating cam member, 54: Elastic member, 5
5 Elastic member for nib brake, 56: Head plate operation member, 57: Lock plate, 58: Spring member, 59: Zeneno (gear, 60: 8LH roller selection member, 65:
Forward side pressure bonding roller arm, 66: Reno side side pressure bonding roller arm, 61: Arm positioning member, 62: Magnetic member, 63: On-type magnet, 64: Coil, 67: Compression spring,
68: Bobbin 1 Me 12th Ward 13th η 3 ? 6 ノ4 BKl 343 ノ5 Figure 17 Kokutai b ノδ Rooster A

Claims (1)

[Scope of Claims] A tape controlled by electrical logic so that modes can be changed by electrical signals to perform fast forwarding, nine rewinding, playback, recording, and stop operations. A recorder consists of a motor that can rotate in forward and reverse directions, a rotation system that is driven by the rotation of the motor, and a torque transmission means such as a permanent magnet, a coil, and gears. The difference in tape winding speed during the rewinding operation is realized by applying electricity to the coil section and utilizing the repulsion between the magnetic field of the permanent magnet and the magnetic field of the coil to change the rotational speed by switching the torque transmission means such as gears. A rotating mechanism for a tape recorder characterized by: