JPH01106352A - Tape player - Google Patents

Abstract

PURPOSE:To reduce a space necessary for the arrangement by executing selectively four types of driving to a reel stand only with two rocking gear mechanisms when a magnetic tape is made travel by a capstan and a pinch roller. CONSTITUTION:When a magnetic tape is made to travel by a capstan and a pinch roller, a rocking gear 85 of a first rocking gear mechanism 80 drives either of two reel stands at a supplying side and a winding side in accordance with the rotation direction of a capstan motor. When the magnetic tape is traveled at high speed, the rocking gear 90 of two rocking gear mechanisms 89 drives either of two reel stands. By two rocking gear mechanisms only, four types of the driving to a reel stand, namely, the driving in the tape winding direction of a supplying side reel stand when the magnetic tape is traveled by the capstan and the pinch roller, the driving in the tape winding direction of a winding side reel stand, the driving in the tape winding direction of the supplying side reel stand when the magnetic tape is traveled at high speed and the driving in the tape winding direction of the winding side reel stand are selectively executed.

Description

[Detailed description of the invention] The tape player of the present invention will be explained according to the following items.

A. Industrial field of application B1 Overview of the invention C1 Prior art a. - Numerical background An example of a conventional reel stand drive means [Fig. 12] B1 Problems to be solved by the invention [Fig. 12] E1 Means for solving the problem F, Embodiment a, Chassis, head drum [Figs. 1 to 10] b, Capstan, capstan motor [Figs. 1 to 4, and 7] C. Pinch roller arm, rope ink flock [1st
Figures to Figures 3, 7, and 10] d. Reel stand [Figures 1 to 8] e. Main brake arm, electromagnetic plunger [Figures 4 to 8] f. Rock slider; Control hole [Figures 4 to 10] g, Control lever [Figures 1 to 3, Figures 7, 8,
Figure 10] h, Reel stand drive system [Figures 1 to 9] h-1, Intermediate gear [Figures 4 to 8] h-2, Pulley, Rotating shaft [Figures 4 to 9] h-3, First swing gear mechanism [Figures 1 to 9] h-4, Second swing gear mechanism [Figures 1 to 9] h-5, Centering of swing gear [Figures 1 to 4,
Fig. 7, Fig. 9] h-5-a, control by lock slider [Fig. 4, Fig. 9] h-5-b, control by control lever [Fig. 1 to Fig. 3, Fig. 7] h-5-c, Combined control using lock slider and control lever [Figures 1, 3, 4, and 6] h-6, Drive of reel stand [Figures 4 to 6] h- 6-a, Driving the reel stand in high-speed running mode [Fig. 5] h-s-b, Driving the reel stand in play mode [Fig. 6] i, Reel stand lock lever [Figs. 1 to 3, 8, 10] j, Other configurations [Figs. 1 to 3, 7] k, Operation -1, Initial state [Fig. 1 -2, Tape loading [Fig. 1] , Fig. 2] k-3. High-speed running of tape [Fig. 2, Fig. 5] k-4. Recording or reproduction [Fig. 3, Fig. 6] k-5. Tape Unloading G1 Effects of the Invention (A. Field of Industrial Application) The present invention relates to a novel tape player. Specifically, the invention relates to a tape player in which two reel stands, in which a supply tape reel and a take-up tape reel are respectively engaged, are driven by the rotational force of a motor for rotating a capstan. By improving the drive system that drives the reel stand by transmitting force, the magnetic tape can be run by a capstan and a pinch roller using two drive means each having a swing gear.
1) Drive of the supply reel stand in the tape winding direction, drive of the take-up reel stand in the tape winding direction, and drive of the supply reel stand in the tape winding direction when running the magnetic tape at high speed. A total of four types of driving can be performed selectively: driving and driving the take-up reel stand in the tape winding direction,
Moreover, the present invention aims to provide a novel tape player which has a simple structure and requires less space for arranging the driving means.

(B. Summary of the Invention) The tape player of the present invention has two reel stands on the supply side and the take-up side, in which the supply side tape reel and the take-up side tape reel are respectively engaged, and a capstan for rotating the capstan. In a tape player driven by a motor,
Two oscillating gear mechanisms are provided that are rotated by the rotational force of the capstan motor and are equipped with oscillating gears that mesh with one of the two reel stands depending on the rotational direction of the motor. By selectively operating the moving gear mechanism,
Drive of the supply reel stand in the tape winding direction when the magnetic tape is run by a capstan and pinch roller, drive of the take-up reel stand in the tape winding direction, and supply when the magnetic tape is run at high speed. It is possible to selectively perform four types of driving in total: driving the side reel stand in the tape winding direction and driving the take-up side reel stand in the tape winding direction.Moreover, the structure is simple and the above-mentioned The space required for arranging the driving means is much smaller.

(C, Prior Art) (a, Numerical Background) A tape player usually has a tape reel on the supply side (hereinafter referred to as "S reel") and a tape reel on the take-up side (
Hereinafter, it will be referred to as "one reel." ), namely, the supply side reel stand (hereinafter referred to as the "S side reel stand") and the take-up side reel stand (hereinafter referred to as the rT side creel stand). In addition, when the tape is made to run in the forward direction, the T-side reel stand is driven in the tape winding direction, and when the tape is made to run in the reverse direction, the S-side reel stand is driven in the tape winding direction. It has become.

In addition, in an operation mode for recording and playing back on a tape (hereinafter referred to as "play mode"), a capstan rotated at a constant speed by a motor and a pinch roller crimped to the capstan with a magnetic tape sandwiched therebetween. In the operation mode (hereinafter referred to as "high-speed running mode") in which the tape is run at a relatively slow speed and the tape is fast-forwarded or rewound (hereinafter referred to as "high-speed running mode"), the reel is rotated at high speed in the tape winding direction. The stand allows the tape to run at high speed.

Therefore, the reel stand driving means for driving the reel stand drives the reel stand at a relatively slow rotational speed in the play mode, and at a relatively high rotational speed in the high speed running mode, and also drives the reel stand at a relatively fast rotational speed in the tape running direction in the mode. It is necessary to select one of the reel stands according to the tape winding direction and rotate the reel stand in the tape winding direction.

(b. An example of a conventional reel stand driving means [Fig. 12] By the way, there have been various types of such reel stand driving means, but among them, there is a motor for rotating a capstan. There is one in which the reel stand is driven by the reel.

FIG. 12 shows an example a of a conventional reel stand driving means having such a structure.

In the figure, b is the S-side reel stand to which the S-reel C is detachably engaged, d is the T-side reel stand to which the T-reel e is detachably engaged, and f is rotated by the capstan motor g. A gear h is coupled to the flywheel f so as to rotate integrally therewith, and a capstan i is erected from the center thereof.

j is an intermediate gear that is always meshed with the gear h via a plurality of reduction gears (not shown), k is a moving gear movably supported by the chassis, and the tape 1 is recorded or reproduced while traveling in the forward direction. etc., this moving gear k is moved to a position where it meshes with the intermediate gear j and the gear part m of the T-side thread stand d, and the T-side thread stand d is moved in the tape winding direction, that is, , rotated clockwise in the figure.

Further, n is a swinging gear mechanism, and the swinging gear mechanism n is rotatably supported by the swinging end of the swinging lever O1, which is rotatably supported by the chassis, and A transmission belt q is passed between a pulley r and a swing gear p, which is in constant frictional contact with a rotating lever 0, and a flywheel f.
and a drive gear S, etc., which rotates integrally with the pulley r and is constantly meshed with the swing gear p, and a flywheel f.
When rotates clockwise, the swing gear p moves to the T side.
When the flywheel f rotates counterclockwise, the swing gear p is engaged with the gear part m of the reel stand d to rotate the reel stand d in the tape winding direction. The reel stand C is meshed with the gear part t to rotate the reel stand C in the tape winding direction, that is, in the counterclockwise direction in the figure.

Therefore, in the play mode, the swing gear p of the swing gear mechanism n is locked at a neutral position where it does not mesh with any reel stand, and the pinch roller U is pressed against the capstan i with the tape a sandwiched therebetween. The capstan i and the pinch roller U cause the tape L to travel in the forward direction, and in conjunction with the movement of the pinch roller U, which moves to the position where it presses against the capstan i, the moving gear k moves to the intermediate gear j and the T side. T is moved to the position where it engages with the thread table d.
The side roll stand d is rotated in the tape winding direction, whereby the tape 1 fed by the capstan i and the pinch roller U is wound onto the T reel e.

In addition, in the high-speed running mode, the lock on the swing gear p of the swing gear mechanism n is released, and the moving gear k is held in a position where it does not mesh with the intermediate gear j and the T-side wheel base d. At the same time, the flywheel f is rotated at a faster speed than in the play mode, and as a result, when performing fast forwarding of the tape, the T side wheel base d is rotated at high speed in the tape winding direction, and also when the tape is being rewound. When this is done, the S side reel stand is rotated at high speed in the tape winding direction.

(D. Problems to be Solved by the Invention) [Fig. 12] According to such reel stand driving means a, there is an advantage that there is no need to provide a special motor for driving the reel stand.

However, the drive system of the reel stand in the play mode has an intermediate gear j and a gear h of the intermediate gear j and the flywheel f.
Since it is composed of multiple reduction gears and moving gears provided in between, it requires a large number of parts even though there is no need to provide a special motor for driving the reel stand. There is a problem in that a relatively large space is required to place the device, and a large number of assembly steps are required.

Moreover, the drive system consisting of the intermediate gear jSU moving gear k and the reduction gear (not shown) is dedicated to the T side wheel base d.
In other words, it is a drive system that functions only when the tape L is running in the forward direction.Therefore, if it is necessary to perform recording or playback while the tape L is running in the reverse direction, it is approximately the same as the drive system described above. A separate drive system with a similar structure must be provided for the S side reel stand, and in addition, in order to drive the T side reel stand d, a moving gear and an S side reel stand must be provided.
There is a problem in that the structure is further complicated because multiple controls are required to engage only one of the moving gears for driving the side reel stands with a predetermined reel stand in accordance with the running of the tape. .

(E. Means for Solving the Problems) Therefore, in order to solve the above problems, the tape player of the present invention rotates by being transmitted with the rotational force of a capstan motor, and the tape player rotates in the rotational direction of the capstan motor. The first reel is equipped with a swing gear that is biased with a moving force to a position where it meshes with the gear portion of one of the two reel stands on the supply side and the take-up side.
and 2. When the two swing gear mechanisms and the pinch roller are pressed to the capstan with the magnetic tape in between, the swing gear of the first swing gear mechanism can be moved and the second swing gear mechanism can be moved. The swinging gear of the gear mechanism is held in a neutral position where it does not mesh with any reel base, and when the magnetic tape is to be run at high speed, the swinging gear of the second swinging gear mechanism is allowed to move and the first swinging gear is moved. A control means is provided for holding the swing gear of the gear mechanism in a neutral position where it does not mesh with any reel stand.

Therefore, according to the tape player of the present invention, when the magnetic tape is run by the capstan and the pinch roller, the swing gear of the first swing gear machine is operated on the supply side and the winding side depending on the rotation direction of the capstan motor. When the magnetic tape is to be driven at high speed because it drives one of the two reel stands, the swing gear of the second swing gear mechanism moves between the two reel stands according to the rotational direction of the capstan motor. Since only one of the two swing gear mechanisms is required to drive the reel base, there are four types of drive for the reel base. Driving the reel stand on the take-up side in the tape winding direction, driving the reel stand on the take-up side in the tape winding direction, driving the reel stand on the supply side in the tape winding direction when running the magnetic tape at high speed, and winding the tape on the reel stand on the take-up side. It is possible to selectively drive the
Most of the two swing gear mechanisms can be disposed between the two reel stands, so they have the advantage that only a small space is required for their arrangement.

(F. Embodiment) Details of the tape player of the present invention will be described below according to the illustrated embodiment.

The illustrated embodiment is an application of the present invention to a digital audio chip recorder (hereinafter referred to as rDATJ).

(a, chassis, head drum) [Figures 1 to 10] 1 is DAT (only the mechanical deck is shown in the drawing).

).

2 is the front-back direction (the lower side in Figure 1 is the front side, the upper side is the rear side, the left side in the same figure is the left side, and the right side is the right side. Furthermore, the upper side in Figure 7 is the upper side, and the lower side is the lower side. It is a mechanical chassis that is long and approximately rectangular in shape (the directions shown below also refer to this direction), and a reel stand arrangement hole 3 that is long in the left and right direction is formed at the front end of the chassis. A guide hole 4.4' is formed between the reel stand arrangement hole 3 and the rear edge, and is arranged in a substantially inverted shape. 4.4
A catcher located at the rear end of ', facing from above.
5 and 5' are fixed.

Reference numeral 6 denotes a sub-chassis disposed below the mechanical chassis 2, which has a substantially rectangular shape that is long in the left-right direction, and faces substantially parallel to the front half of the mechanical chassis 2 at a predetermined distance. It is fixed to the mechanical chassis 2.

7 is a head drum provided between the rear ends of the guide holes 4 and 4' on the upper surface of the mechanical chassis 2, and a recording device that moves along a rotation locus along the outer circumferential surface of the head drum 7 is provided on its rotating portion 7a. A plurality of magnetic heads 8.8, . It is designed to be rotated by

(b, capstan, capstan motor) [Figures 1 to 4, and 7] 9 is a capstan housing having a substantially cylindrical shape, and is spaced slightly diagonally forward to the right from the head drum 7 of the mechanical chassis 2. The opening 9a is fixed to the mechanical chassis 2 while vertically penetrating through the mechanical chassis 2, and of the portion projecting upward from the mechanical chassis 2, the portion facing diagonally forward to the left is an opening 9a.

Reference numeral 10 denotes a capstan, whose upper and lower ends are rotatably supported by bearings (not shown) provided at both upper and lower ends in the capstan housing 9, and which has a relatively large diameter at its lower end. The center of the rotor 11 is fixed.

Reference numeral 12 designates a coil board whose central part is fixed to the lower end of the capstan housing 9, and on the lower surface of which a large number of stator coils 13, 13, . . . They are mounted facing each other.

The stator coils 13.13, . . . and the rotor 11 constitute a so-called plane facing type motor (hereinafter referred to as "capstan motor") 14, and the stator coils 13.13, . . . By supplying the drive current to the rotor 11, a rotational force is applied to the rotor 11 in a direction and speed corresponding to the direction and frequency of the drive current, thereby causing the rotor 11 to rotate.

The rotor 11 operates in a mode in which the magnetic tape is caused to travel in the forward direction by the capstan 10 and a pinch roller (described later) (hereinafter referred to as "forward play mode"), and in a reverse direction by the rotation of the supply side reel stand (described later). In a mode in which the magnetic tape is run at high speed (hereinafter referred to as r-rewind mode), the magnetic tape rotates in the counterclockwise direction in FIG. A mode in which the playback mode is caused to run in the reverse direction using the capstan 10 and the pinch roller (hereinafter referred to as "reverse play mode"), and a mode in which the playback mode is made to run at high speed in the forward direction by rotation of the take-up reel stand (hereinafter referred to as "reverse play mode"), which will be described later. (referred to as "fast forward mode"), it rotates clockwise (hereinafter, rotation in this direction is referred to as "reverse rotation"), and in high speed mode, it rotates at a speed much faster than the rotation speed in play mode. do.

(C, pinch roller arm, loading block) [
1 to 3, FIG. 7, and FIG. 10] 15 is a pinch roller arm. The pinch roller arm 15 has an abbreviated shape when viewed from above, and its right end is rotatably attached to an arm support shaft 16 erected at a position near the front of the right edge of the mechanical chassis 2. Further, a roller support shaft 17 passing through the arm 15 in the plate thickness direction is fixed to the rotating end thereof, and a pinch roller 18 is attached to a portion of the roller support shaft 17 that protrudes upward from the arm 15. is rotatably supported.

Note that the portion of the roller support shaft 17 that projects downward from the arm 15 projects downward through an arcuate hole 19 formed in the mechanical chassis 2. In addition, pinch roller arm 15
Due to the elastic force of the elastic means (not shown), the first
When the rotational force is applied in the counterclockwise direction in the figure and is not pressed in the clockwise direction, the roller support shaft 17 is in contact with the front end of the arcuate hole 19, as shown in FIG. (hereinafter referred to as the "non-loading position").

20. 20' is a loading block for performing tape loading, and tape loading block 2
1.21' and an inclined guide post 22.22', and is supported to move along said guide hole 4.4'.

Although not shown, a moving mechanism consisting of two loading rings and the like driven by a motor 23 for tape loading is provided below the mechanical chassis 2, and the loading block 20, 20'
By this moving mechanism, the position corresponding to the front ends of the guide holes 4 and 4' (hereinafter referred to as the "non-loading position") as shown in FIG. 1 and the catcher position as shown in FIG.
The pinch roller arm 15 is also moved between the non-loading position and the position shown in FIG. As shown, the pinch roller 18 is moved between the position where it contacts the capstan 1o (hereinafter referred to as the "pressing position").

Note that the state before tape loading is performed, that is,
In the initial state, loading block 20.20'
and the pinch roller arm 15 are in the above-mentioned non-loading position, and when tape loading is performed, the loading blocks 20, 20' are moved to the loading completion position and the pinch roller arm 15 is in the second position. As shown in the figure, the pinch roller 18 is moved to a position (hereinafter referred to as the "standby position") slightly spaced diagonally forward and to the left of the capstan 10, and the magnetic tape is pinched with the capstan 10. roller 18
When a play mode in which the tape is held and run is formed, it is moved to the crimping position.

(d, Reel stand) [Figures 1 to 8] 24 is an S side reel stand, and 25 is a T side reel stand.

These reel stands 24, 25 are connected to a main brake drum 26, 26', to which a main brake arm (to be described later) is in elastic contact with, and a relatively small diameter drum located below the main brake drum 26, 26'. the first driven gear 27, 27' and the main brake drum 261;
．． Second driven gear 28.28' located above 26'
and a sub-brake drum 29.29 which is located a little apart from the second driven gear 28.28' and is in elastic contact with the brake shoe of the control lever, which will be described later, so as to be able to come into contact with and separate from it.
', and a reel engaging shaft 30.30' which is located apart upward from the sub-brake drum 29.29' and to which a tape reel of a tape cassette to be described later is removably engaged. The wheel base 25 is provided with a ratchet-shaped locked part 31 located between the second driven gear 28' and the sub-brake drum 29', and these parts are integrally connected to each other. formed or integrally rotationally coupled.

These two reel stands 24 and 25 are arranged at a predetermined interval in the left-right direction, and the sub-brake drum 29
．． A portion above 29' protrudes upwardly from the mechanical chassis 2 through the reel stand arrangement hole 3, and is rotatably supported by a reel stand support shaft 32, 32' provided upright on the sub-chassis 6.

In addition, the reel stand 24.25, in the play mode,
A swing gear of a first swing gear mechanism (described later) is rotated by meshing with either one of the first driven gears 27, 27' via an intermediate gear (described later), and also in high-speed running mode. In this case, the swing gear of the second swing gear mechanism, which will be described later, is rotated by meshing with either one of the second driven gears 28, 28'.

(e, main brake arm, electromagnetic plunger) [Figures 4 to 8] 33 and 33' are main brake arms. These main brake arms 33.33' are attached to the reel stand 24.2.
5, the main part of which has a substantially triangular shape when viewed from above, and a brake shoe 34, 34' is fixed to one corner of the brake shoe 34, 34', and the other two corner parts are Arms 35 and 35' project from one of the arms toward each other,
In addition, these arms 35 and 35' are positioned so as to overlap vertically, and furthermore, the remaining corner portions are rotatably supported by support shafts 36 and 36' erected on the sub-chassis 6. .

The main brake arm 33, 33' is always held in place by the brake shoe 34, 34' on the reel stand 24 due to the tensile force of the tension spring 37 stretched between the main brake arms 33, 33'.
25 main brake drums 2B, 26', and as long as they are not pressed in the opposite direction, the brake drum L34.34'
is in elastic contact with the main brake drums 26, 26' (
(hereinafter referred to as the "braking position").

38 is an electromagnetic plunger. The electromagnetic plunger 3
8 has its casing 39 fixed to a mounting frame 40 fixed to the right end of the upper surface of the sub-chassis 6, and its rod 41 protrudes forward from the mounting frame 40.

42 is a release link. The release link 42 has a plate shape long in the left-right direction, and its approximately middle portion is rotatably supported by a support shaft 43 erected on the sub-chassis 6, and its right end portion is supported by the electromagnetic plunger 38. A suppression bin 44 is rotatably connected to the tip of the rod 41 and protrudes downward from the left end thereof, and is attached to the arm 35, 35' of the main brake arm 33.33' from behind. They are facing each other.

A spring hook 45 protrudes upward from a position near the right end of the release link 42 and from the front end of the sub-chassis 6.
A tension spring 46 is tensioned between the release link 42 and the tension spring 46, and the tension of the tension spring 46 always applies a rotational force to the release link 42 in the clockwise direction in FIG.

47 extends forward from the front end of the mounting frame 40;
Moreover, it is a stopper piece that has a substantially inverted shape when viewed from above, and its front end 47a is connected to the rod 4 of the electromagnetic plunger 3B.
1 from the front.

Therefore, when the electromagnetic plunger 38 is not excited, the rod 41 is urged forward by the rotating force applied to the release link 42, and the rod 41 is pushed to the front end of the stopper piece 47. By coming into contact with the portion 47a, the forward movement of the rod 41 and the clockwise rotation of the release link 42 are prevented, and in this state, as shown in FIG. The pin 44 is held in a position close to the rear of the arm 35.35' of the main brake arm 33.33' (hereinafter referred to as the "non-released position").

Furthermore, when the electromagnetic plunger 38 is energized from this state, the rod 41 is attracted rearward and moved to the position shown in FIG. The pressing pin 44 is rotated counterclockwise, and the pressing pin 44 is pressed against the main brake arm 3.
Since the arms 35 and 35' of 3.33' are pushed forward, these main brake arms 33 and 33' act as shown in FIG. It will be moved to a position away from the drums 26, 26' (hereinafter referred to as the "brake release position").

When the electromagnetic plunger 38 is not excited, a strong brake (hereinafter referred to as "main brake") is applied to the reel stand 24.25 by the main brake arm 33.33', and the electromagnetic plunger 38 is excited, the main brake for the reel stands 24, 25 is released.

The electromagnetic plunger 38 is energized when loading and unloading the tape and when running the magnetic tape.

(f, lock slider, regulation hole) [Figures 4 to 10
Figure ] 48 and 49 are regulation holes formed in the sub-chassis 6. These regulation holes 48 and 49 are for regulating the movement stroke of the swing gear of the swing gear mechanism, which will be described later, and have a rectangular shape. They are formed at positions between the shafts 32 and 32 and spaced apart from each other in the front and rear.

50 is a rock slider, and the rock slider 5
0 is for locking a swing gear, which will be described later, in a position where it does not mesh with any of the reel stands 24 and 25 in the initial state and the stop state.

The lock slider 50 has an elongated plate shape in the front and back direction,
A longitudinally long retaining hole 51 is formed at the front end thereof, and guided holes 52 and 52 which are longitudinally long are formed at a position closer to the engagement elongated hole 51 and at a position closer to the rear end. .

Reference numerals 53 and 54 denote control holes formed at positions spaced apart from each other in the front and back in the portion between the two guided holes 52 and 52, and are approximately funnel-shaped when viewed from above, with the rear portions 53a and 54
a (hereinafter referred to as the "non-locking part"), that is, the length of the lock slider 50 in the width direction is slightly longer than the length of the regulation hole 48, 49 in the left-right direction, and the front end part 53b , 54b (hereinafter referred to as the "lock part") is located approximately at the center in the width direction of the lock slider 50 and is approximately U-shaped, and its width is the lower end of the support shaft on which the swing gear (to be described later) is supported. The dimensions are approximately the same as the thickness of the part.

In addition, the non-locking parts 53a, 54a and the locking parts 53b, 54
b is inclined so as to extend toward both left and right sides as it goes rearward, and thereby lock parts 53b and 54b of support shafts located in the control holes 53 and 54, which will be described later, are The engagement is made smooth.

Reference numerals 55 and 56 denote bearings, and these bearings 55 and 56 include substantially cylindrical supporting portions 55a and 56a;
Approximately disk-shaped mounting portions 55b and 56b protruding laterally from a portion near the lower end of the sub-chassis 6a are integrally formed, and the upper portion of the support portion 55a156a is located behind the rear regulation hole 48 of the sub-chassis 6. The mounting portions 55b and 56b are fixed to the lower surface of the sub-chassis 6 while protruding upward from the sub-chassis 6 through mounting holes 57 and 57 formed in front of the front regulation hole 49.

The lock slider 50 has a guided hole 52.5.
2, the parts of the support parts 55a, 56a of the bearings 55, 56 that protrude upward from the sub-chassis 6 are slidably engaged with the sub-chassis so that the sub-chassis can be moved within a certain range in the front-back direction. 2, and the lower end of the pressing pin 44 of the release link 42 is slidably engaged with the engagement elongated hole 51.

Therefore, the lock slider 50 is moved in the front-back direction according to the movement of the release link 42, and when the release link 42 is in the non-release position, the lock slider 50 is
As can be clearly seen in the figure, the locking portions 53b and 54b of the control holes 53 and 54 are the control holes 4 formed in the sub-chassis 6.
8.49 (hereinafter referred to as the "centering position"), and when the release link 42 is rotated counterclockwise, its engagement length As the front edge of the hole 51 is pressed substantially forward by the pressing pin 44 of the release link 42, the non-locking portion 5 of the control hole 53,54 is pressed, as can be clearly seen in FIG.
A position where the approximate center of 3a154a corresponds to the approximate center of the regulation hole 48.49 (hereinafter referred to as the "centering release position")
Say. ) will be moved to.

Thus, the lock slider 50 is moved to the centering release position at the same time as the main brake applied to the reel stand 24.25 by the main brake arm 33.33' is released.

(g, control lever) [Figures 1 to 3, Figures 7, 8
FIG. 10] Reference numeral 58 denotes a control lever, and when the magnetic tape is run, the control lever 58 moves either one of two swing gears (described later) to the reel stand 24, depending on the tape running mode.
The two reel stands 24 and 25 are locked in a position where they do not mesh with any of the reel stands 24 and 25 in high-speed running mode.
This is to apply an appropriate rotational restraint force (hereinafter referred to as "soft brake") to both of the brakes.

The control lever 58 has a substantially T-shaped plate shape when viewed from above,
A long notch 59 and a long hole 60 are formed along the front and back directions at both the front and rear ends, and a spring hook 61 is provided to protrude laterally from the middle part of the right edge.

In addition, brake shoes 62, 62 are attached to the front surfaces of the portion 58a that protrudes to the left and the portion 58b that protrudes to the right of the rear end, and the left half of the front edge of the portion 58b that protrudes to the right is approximately trapezoidal. A notch 63 is formed, and a rear edge 63a of the notch 63 is a pressed edge pressed by a link to be described later.

Reference numeral 64 denotes a control hole formed in a portion near the right edge of the control lever 58, and a large portion 64a (hereinafter referred to as "non-locking portion") of the control hole 64, excluding both front and rear ends thereof, is connected to the lock slider. The control hole 53.54 formed in the control hole 50 has a long hole shape that is long in the front and back direction and has a width that is approximately the same as the length in the left and right direction of the non-locking portion 53a154a, and a hole is formed in the center of both front and rear ends of the non-locking portion 64a. A lock portion 53b of a control hole 53.54 formed in the lock slider 50;
Notches 64b and 64c (hereinafter referred to as "lock portions") having approximately the same size as 54b are formed, and
The portion between the locking portions 64b, 64c and the non-locking portion 64 is inclined so as to be displaced inward as it approaches the locking portions 64b, 64c.

65. 65 is a support shaft that protrudes upward from both front and rear sides of the mechanical chassis 2 across the center of the reel stand arrangement hole 3, and 66 is a support shaft 6 on the front side of the mechanical chassis 2.
This is a spring-loaded pin that protrudes upward from the right side of 5.

The control lever 58 then controls the brake shoe 62 .
62 is the sub-brake drum 29. of the reel stand 24.25.
29' from the rear, the support shafts 65 and 65 slidably engage with the inverted U-shaped notch 59 and the elongated hole 60, thereby allowing the mechanical chassis 2 to move forward and backward within a certain range. It is supported so as to be movable, and a tension spring 67 is stretched between the spring hanging piece 61 and the spring hanging pin 66.

Therefore, the control lever 58 is always urged forward by the tensile force of the tension spring 67, and while it is not being pushed rearward, the brake shoe is not pressed as shown in FIG. 62.62 is reel stand 24.25
The position where it is in elastic contact with the sub brake drum 29, 29' (
Hereinafter, this will be referred to as the "forward position." ), and when it is in the forward position, the rear lock portion 64b of the control hole 64 is inserted from above into the approximate center of the rear regulation hole 48 formed in the sub-chassis 6. They are facing each other.

The control lever 58 is held at the forward position described above in the initial state, stop state, and high-speed running mode, and when the play mode is established, it is pressed by a reel stand lock lever to be described later. The reel stand 2 is driven to the retracted position shown in FIG.
When the soft brake for 4.25 is released and the rearward position is reached, the front locking portion 64c of the control hole 64 locks into the front regulating hole 49 formed in the sub-chassis 6.
It will face approximately the center of the area from above.

(h, reel stand drive system) [Figures 1 to 9] (h-t
, intermediate gear) [Figs. 4 to 8] 68 and 68' are intermediate gears. These intermediate gears 68.68' are large gears 68a, 68'a having approximately the same diameter as the first driven gear 27.27' of the reel stand 24.25;
The small gears 68b and 68'b located on the upper surface of the sub-chassis 6 are integrally formed, and a small gear 68'a is located on the upper surface of the sub-chassis 6 at a position close to the reel stand support shaft 32, 32 from the rear and slightly diagonal side. It is rotatably supported by an upright support shaft 69.69', and its small gears 68b, 68'b are individually meshed with the first driven gear 27.27' of the reel stand 24.25. There is.

(h-2, pulley, rotating shaft) [FIGS. 4 to 9] 70 is a drive pulley fixed to a portion of the capstan 10 that projects downward from the rotor 11.

Reference numeral 71 designates a first rotating shaft, the intermediate portion of which is rotatably supported by the rear bearing 55, and a disc member 72 is fixed to a portion that protrudes downward from the bearing 55;
Furthermore, a spring receiving boss 73 is externally fixed to a cylindrical portion 72a that protrudes downward from the center of the disc member 72.

74 is a first driven pulley, and the drive pulley 70
It has an insertion hole 74 in the center.
a is formed, and a recess 75 (see FIG. 9) is formed in a portion surrounding the insertion hole 74a on the lower surface. The spring receiving boss 73 is rotatably inserted into the insertion hole 74a of the first driven boolean 4, and the recess 75
A compression spring 76 is compressed between the flange 3a formed at the lower end of the spring receiving boss 73, and the repulsive force of the compression spring 76 causes the friction plate fixed to the lower surface of the disc member 72 to be compressed. It is in elastic contact with 72b.

Therefore, the first rotating shaft 71 rotates integrally with the driven pulley 74 due to the frictional force between the friction plate 72b of the disc member 72 fixed thereto and the first driven pulley 74, and also rotates. When a strong load is applied to the shaft 71, the disc member 72 and the driven pulley 74 slip.

Reference numeral 77 denotes a second rotating shaft, whose lower end portion is rotatably supported by the front bearing 56, and the portion protruding downward from the bearing 56 is connected to the path of the first driven pulley 74. A second driven pulley 78 having a quantile diameter is fixed.

A transmission belt 79 is passed around the drive pulley 70, the first driven pulley 74, and the second driven pulley 78 so that these three pulleys 70, 74, and 78 rotate in the same direction.

Therefore, when the capstan motor 14 rotates, the drive pulley 70, the first and second driven pulleys 74.78, and the first and second rotation shafts 71.77 rotate simultaneously in the same direction.

Therefore, these driven pulleys 74, 78 and the rotating shaft 7
1.77, when the capstan motor 14 rotates in the normal direction, it rotates counterclockwise in FIG. 4, and when the capstan motor 14 rotates in the reverse direction, it rotates in the clockwise direction.

(h-3, First Swing Gear Mechanism) [Figures 1 to 9] Reference numeral 80 denotes a gear mechanism that selects and drives either the supply side reel stand 24 or the take-up side reel stand 25 in the play mode. 1 swing gear mechanism, and the first driven pulley 74
and the first rotating shaft 71, a drive lever and a support shaft, which will be described later.
Consists of drive gear, swing gear, etc.

81 is a drive gear fixed to a portion of the first rotating shaft 71 that protrudes upward from the bearing 55; 82 is a rotating lever, the rear end of which is connected to the driving gear 81 of the first rotating shaft 71;
It is rotatably supported by a portion that protrudes upward from the base.

Note that a retaining washer 83 is engaged with a portion of the first rotating shaft 71 that projects upward from the rotating lever 82 .

Reference numeral 84 denotes a support shaft fixed to the rotating end of the rotating lever 82 so as to pass through the lever 82 in the thickness direction, and its lower end 84a is connected to the rear control hole formed in the lock slider 50. 53 and the rear regulating hole 48 formed in the sub-chassis 6, and its upper end 84b is located in the control hole 64 formed in the control lever 58.

85 is a swing gear (hereinafter referred to as "first swing gear").
A relatively thick small gear 85a and a large gear 85b located at the upper end of the small gear 85a are integrally formed, and a deep recess 86 surrounding the center hole 85c and opening at the bottom surface.
is formed.

Reference numeral 87 denotes a spring receiving washer that is engaged at a position of the support shaft 84 near the control hole 53 of the lock slider 50.

The swing gear 85 has a support shaft 84 in its center hole 85c.
is inserted and rotatably supported by the support shaft 84, and its large gear 85b is meshed with the drive gear 81, and a compressor is compressed between the recess 86 and the spring bearing washer 87. Due to the repulsive force of the spring 88, it is brought into elastic contact with the lower surface of the rotating lever 82.

Therefore, when the first rotation shaft 71 rotates, the drive gear 81 rotates integrally with it, so that the swing gear 85 meshing with the drive gear 81 is rotated in a direction corresponding to the rotation direction of the drive gear 81. The force will be applied, but while the rotation of the rotation lever 82 is not prevented, the rotation lever 85 will not move due to the friction load between the rotation lever 82 and the swing gear 85. 82 rotates integrally with the drive gear 81.

Therefore, when the rotation of the rotation lever 82 is not blocked, the rotation of the drive gear 81 causes the rotation lever 82 to rotate in the same direction as the rotation direction of the drive gear 81.

Further, in a state where the rotation of the rotation lever 82 is prevented, the swing gear 85 is rotated by the drive gear 81 while slipping with respect to the rotation lever 82.

The lower end of the small gear 85a of the first swing gear 85 is located at the same height as the large gear 68a168'a of the intermediate gear 68, 68'.

(h-4, second swing gear mechanism) [Figures 1 to 9] 89 selects and drives either the supply side reel stand 24 or the take-up side reel stand 25 in the high-speed running mode. This is a second swing gear mechanism for the purpose of the present invention, and includes a second driven pulley 78, a second rotating shaft 77, a rotating lever, a gear support shaft, a drive gear, a swing gear, etc., which will be described later.

Reference numeral 90 denotes a drive gear, which is fixed to a portion of the second rotating shaft 77 that protrudes upward from the bearing 56, and has a large diameter in its upper half and has gear teeth formed therein.

91 is a rotating lever, the front end of which is connected to the second rotating shaft 7.
It is rotatably supported by a portion projecting upward from the drive gear 9o of No.7. Note that a retaining washer 92 is engaged with a portion of the second rotating shaft 77 that projects upward from the rotating lever 91.

A gear support shaft 93 is fixed to the rotating end of the rotating lever 91 in a state where it passes through the rotating lever 91 in the plate thickness direction, and its lower end 93a is connected to the front side formed on the lock slider 5o. It is located approximately at the center of the control hole 54 and the front regulation hole 49 formed in the sub-chassis 6, and its upper end 93b is located within the control hole 64 formed in the control lever 58. , a support washer 94 is engaged at a position near the lower end thereof.

95 is a swing gear (hereinafter referred to as "second swing gear").
The swing gear 95 includes a gear portion 96 having a substantially flat gear shape.
and a thin cylindrical boss 97 that protrudes downward from the center of the gear portion 96 are integrally formed, and a lower path half of the boss 97 is provided along the axial direction. Extended and.

By providing a slit reaching the lower end, a plurality of elastic pieces 97a, 97a1, . . . having bending elasticity are formed.

The rocking gear 95 has a portion of the gear support shaft 93 between the rotary lever 91 and the support washer 94 inserted into an insertion hole 95a formed in its shaft center, so that the gear support @93 The gear portion 96 is rotatably supported by the drive gear 90, and its gear portion 96 is meshed with the drive gear 90.

Further, the length of the portion of the gear support shaft 93 between the rotation lever 91 and the support washer 94 is slightly shorter than the height of the center of the swing gear 95. 9
As you can clearly see in the figure, the bullet piece 97 a of the boss 97
, 97 a% ... is fitted onto the gear support shaft 93 in a state where the lower end is bent to form a substantially skirt shape, and elastic shape recovery occurs in this bent part. The force causes the swing gear 95 to come into elastic contact with the lower surface of the swing lever 91.

Therefore, when the second rotation shaft 77 rotates, the drive gear 90 rotates integrally with it, so that the swing gear 95 meshing with the drive gear 90 has a rotation direction corresponding to the rotation direction of the drive gear 90. Although the rotational force is applied, as long as the rotation of the rotation lever 91 is not prevented, the rotation lever 9
1 and the swing gear 95 due to the friction load between the swing gear 95 and the swing gear 95.
rotates integrally with the drive gear 90 while driving the rotation lever 91.

Therefore, in this state, the rotary lever 91 is rotated in the same direction as the rotational direction of the drive gear 90.

Further, in a state where the rotation of the rotation lever 91 is prevented, the swing gear 95 is rotated by the drive gear 90 while slipping with respect to the rotation lever 91.

Note that the gear portion 96 of the second swing gear 95 is connected to the reel stand 24.
25 second driven gear 28, 28'.

(h-5, Centering of swing gear) [Figures 1 to 4
, FIG. 7, and FIG. 9. The first and second swing gear mechanisms 80 configured in this way
The movements of the swing gears 85 and 95 are controlled by the lock slider 50 and the control lever 58 as described below.

(h-5-a, control by lock slider) [Fig. 4, Fig. 9] As described above, the gear support shaft 84 (hereinafter referred to as "first gear") supporting the first swing gear 85 (referred to as "support shaft")
The lower end portion 84a is located approximately at the center of the rear regulation hole 48 formed in the sub-chassis 6 and within the rear control hole 53 formed in the lock slider 50, and The lower end 93a of the gear support shaft 93 (hereinafter referred to as the "second gear support shaft") supporting the sub-chassis 6 is connected to the approximate center of the front regulation hole 49 formed in the sub-chassis 6 and to the lock slider 50. When the lock slider 50 is located in the formed front control hole 54 and is in the centering position, that is, the electromagnetic plunger 3
8 is not excited, the lock portions 53b and 54b of the two control holes 53 and 54 of the lock slider 50
corresponds to approximately the center of the regulation holes 48 and 49 of the sub-chassis 6.

Therefore, when the lock slider 50 is at the centering position, the lower end 84 of the first gear support shaft 84
The lock portion 53b of the control hole 53 on the rear side of the lock slider 50 is connected to the lower end portion 93 of the second gear support shaft 93 at
The locking portions 54b of the front control hole 54 are engaged with the respective locking portions 54b of the control hole 54 on the front side, whereby the gear support shafts 84 and 93 are locked at a position approximately midway between the two reel stands 24 and 25.

Therefore, when the rock slider 50 is at the centering position, the first swing gear 85 is at a position approximately midway between the two intermediate gears 68 and 68' (hereinafter referred to as the "neutral position"). ) (hereinafter, such a lock is referred to as "centering"), and the second swing gear 95 is locked at the second driven gears 28 and 28' of the reel stand 24.25. It will be locked at an intermediate position (hereinafter referred to as "neutral position").

Further, when the electromagnetic plunger 38 is excited from this state and the lock slider 50 moves to the centering release position, the lock portions 53b and 54b of the control holes 53 and 54 of the lock slider 50 are connected to the first gear support shaft 8.
4 lower end 84a and the lower end 9 of the second gear support shaft 93
3a and the lower end portions 84a and 93
a indicates the non-locking portions 53a and 5 of the control holes 53 and 54;
4a with plenty of room left and right,
As a result, the gear support shafts 84 and 93 are locked in the unlocked portion 5.
It becomes possible to move within the width range of 3a and 54a in the left and right direction.

Therefore, when the lock slider 50 moves six times to the centering release position, the centering of the rocking gears 85 and 95 by the lock slider 50 is released.

(h-5-b, control by control lever) [Figs. 1 to 3, and 7] As described above, the upper end portion 84b of the first gear support shaft 84
The upper end portion 93b of the second gear support shaft 93 is located within the control hole 64 of the control lever 58, and when the control lever 58 is in the forward position, the rear lock portion 64b is Rear regulation hole 48 formed in chassis 6
It is located approximately in the center of the city, as seen from above.

Therefore, when the control lever 58 is in the forward position,
A control lever 58 is attached to the upper end 84b of the first gear support shaft 84.
The lock portion 64b on the rear side of the control hole 64 is engaged, and the upper end portion 93b of the second gear support shaft 93 is engaged with the non-lock portion 6.
It will be located approximately in the center of 4a, and as a result,
Only the movement of the first gear support shaft 84 is prevented by the control lever 58.

Therefore, when the control lever 58 is in the forward position, only the first swing gear 85 is locked in the neutral position, and the second swing gear 95 can move to some extent in the left and right direction. . That is, only the first swing gear 85 is centered.

Furthermore, when the control lever 5B moves to the retracted position, as shown in FIG. The upper end portion 84b of the gear support shaft 84 is located approximately at the center of the non-locking portion 64a.

Therefore, when the control lever 58 moves to the backward position, the centering of the control lever 58 with respect to the first swing gear 85 is released, and the centering of the control lever 58 with respect to the second swing gear 95 is performed. become.

(h-5-c, combined control using lock slider and control lever) [Fig. 1, Fig. 3, Fig. 4, Fig. 6] However, the lock slider 50 has come to the centering position and the control lever 58 in the forward position, that is, in the initial state or stop state, the first swing gear 85 is centered by the lock slider 50 and the control lever 58, and the second swing gear 95 is centered by the lock slider 50. In addition, the control lever 58 is in the forward position and the lock slider 50 is in the centering release position. ), the centering by the lock slider 50 is released for both swing gears 85 and 95, but only the first swing gear 85 is centered by the control lever 58. Become. Furthermore, the lock slider 50 is moved to the decentering position, and
The control lever 58 is moved to the retracted position, i.e.
In the play mode, only the second swing gear 95 is in control.
It is centered by the control lever 58.

(h-6, Driving the reel stand) [Figs. 4 to 6] When the capstan motor 14 rotates normally, that is, counterclockwise in Fig. 4, the first and second driven pulleys 74 and 78, first and second rotating shafts 71 and 77
Since the drive gears 81 and 90 are both rotated counterclockwise, a counterclockwise rotation force is applied to the rotation levers 82 and 91.

Further, when the capstan motor 14 rotates in the reverse direction, that is, in the clockwise direction in FIG. 4, a clockwise rotation force is applied to the rotation levers 82 and 91.

(h-6-a, Driving the reel stand in high-speed running mode) [Figure 5] Therefore, when the high-speed running mode is established, the electromagnetic plunger 38 is excited and the lock slider 50 is moved to the centering release position. Then, only the centering with respect to the second swing gear 95 is released.

Therefore, when the capstan motor 14 reverses from this state, the rotation lever 91 is rotated clockwise and the second rotation lever 91 is rotated clockwise.
The swinging gear 95 is moved clockwise, and as shown by the solid line in FIG. When the rotary lever 91 comes into contact with the right side edge of the hole 49, the clockwise movement of the rotary lever 91 is blocked, and at the same time, the swing gear 95 moves to the second driven gear 28' of the T-side slider 25.
mesh with.

Since the swing gear 95 rotates counterclockwise, the second driven gear 28' rotates clockwise, and therefore the T-side thread table 25 is rotated in the tape winding direction. .

Conversely, when the capstan motor 14 rotates forward, the rotating lever 91 is rotated counterclockwise, the second swing gear 95 is moved counterclockwise, and the second swing gear 95 is moved counterclockwise. As shown by the two-dot chain line in Fig. 5, the second gear support shaft 9
When the lower end 93a of 3 contacts the left side edge of the regulation hole 49, the rotation lever 91 is prevented from moving in the counterclockwise direction, and at the same time, the swing gear 95 is moved to the S side reel stand 24.
The second driven gear 28 meshes with the second driven gear 28 .

Since the swing gear 95 rotates clockwise,
The second driven gear 28 rotates counterclockwise, and therefore the S-side reel stand 24 is rotated in the tape winding direction.

Note that while the reel stands 24 and 25 are rotated by the second swing gear 95 in this way, the first swing gear 8
5 in its neutral position, i.e. intermediate gear 68.68
' is rotated by the drive gear 81 in a state where it is not meshed with the drive gear 81.

(h-6-b, driving the reel stand in play mode)
[Figure 6] When the play mode is established, the lock slider 50
moves to the centering release position, and the control lever 58 moves to the retracted position, whereby only the centering for the first swing gear 85 is released.

Therefore, when the capstan motor 14 rotates forward in this state, the rotary lever 82 is rotated counterclockwise, and the second swing gear 85 is moved counterclockwise. When the lower end 84a of the first gear support shaft 84, which supports
movement in the counterclockwise direction is prevented, and substantially at the same time, the swing gear 85 meshes with the right intermediate gear 68'.

Since the swing gear 85 rotates clockwise, the intermediate gear 68' is rotated counterclockwise, and this intermediate gear 68' rotates the first driven gear 27' of the side reel stand 25. Since it is rotated clockwise, the T-side thread stand 25 is rotated in the tape winding direction.

Conversely, when the capstan motor 14 reverses, the rotation lever 82 is rotated clockwise and the second rotation lever 82 is rotated clockwise.
When the swing gear 85 is moved clockwise and the lower end 84a of the first gear support shaft 84 comes into contact with the left side edge of the regulation hole 48, as shown by the two-dot chain line in FIG. The rotation lever 82 is prevented from moving clockwise, and at approximately the same time, the swing gear 85 meshes with the left intermediate gear 68.

Since the swing gear 85 rotates counterclockwise, the intermediate gear 68 rotates clockwise, and this intermediate gear 68 rotates the first driven gear 27 of the S-side reel stand 24 counterclockwise. Since it is rotated, the S-side reel stand 24 is rotated in the tape winding direction.

Incidentally, while the reel stands 24 and 25 are driven by the first swing gear 85 in this manner, the second swing gear 95 is in its neutral position, that is, the reel stands 24 and 25 are driven by the second swing gear 85.
This means that the drive gear 90 is rotating the drive gear 90 without meshing with the driven gears 28 and 28'.

(i, Reel stand lock lever) [Figs. 1 to 3, Figs. 8 and 10] 98 is a reel stand lock lever.

The reel stand lock lever 98 includes a main part 99 having a substantially rectangular shape and a long arm 1 protruding from the rear end of the main part 99 toward the left side.
00, a short arm 101 protruding toward the right, etc. are integrally formed.

A protruding piece 1 protruding forward from the tip of the long arm 100
The front end of 00a is an engaging claw toob, and
A pressing protrusion 102 is provided at the front end of the protruding piece 100a to protrude upward, and this pressing protrusion 102 is connected to the control lever 58.
It faces the pressed edge 63a of from the front.

Further, a protruding piece 10 is provided rearwardly from the base of the short arm 101.
1a, and a pressed protrusion 103 is provided to protrude upward from the rear end of the protruding piece 101a.
3 is the rear edge 15a of the pinch roller arm 15 (hereinafter referred to as "
It is called "pressure edge". ) is facing from behind.

The reel stand lock lever 98 has a short arm 101 whose right end is rotatably supported by a support shaft 16 on which the pinch roller arm 15 is supported, and a tension spring 104 stretched between it and the mechanical chassis 2. Due to the tensile force of , the rotational force in the counterclockwise direction in FIG. The nail 100b is T
The position where the teeth of the locked portion 31 of the side rail base 25 engages (
Hereinafter, this will be referred to as the "lock position." ), and in this state, the pressing protrusion 102 is located at a distance in front of the pressed edge 63a of the control lever 58 in the forward position, and the pressed Projection 10
3 is located behind and spaced apart from the pressing edge 15a of the pinch roller arm 15 which is in the non-loading position.

When the pinch roller arm 15 rotates clockwise from this state and reaches the position shown by the two-dot chain line in FIG. 2, that is, the position where the engaging pawl 100b disengages from the locked portion 31 of the T-side slide 25. Worked 6 shifts,
Furthermore, by being rotated clockwise by the pinch roller arm 15, the brake release position shown in FIG. The control lever 5
8 to the retracted position.

(j, Other configurations) [Figures 1 to 3, and 7] Reference numeral 105 is a tensile gear arm, the base end of which is rotatably supported by the mechanical chassis 2 and always rotates counterclockwise. A tensile pin 106 is erected at the rotating end thereof, and is held at the non-loading position shown in FIG. 1 in the initial state.

107, 108, 109, 110 and 111 are tape guide posts, of which 111 (hereinafter referred to as "furidashi guide") has a non-loading position shown in Fig. 1 and a loading completion position shown in Fig. 2. It is designed to be moved between.

112 is a tape cassette.

113 is a cassette case, and the cassette case 11
An S reel 115 and a T reel 116 each having both ends of a magnetic tape 1140 fixed therein and wound with a predetermined amount are rotatably housed in the cassette case 113, and a portion of the magnetic tape 114 is formed at both ends of the front surface of the cassette case 113. The tape is led out from the cassette case 113 through the tape outlet, and the led out portion is passed through the front surface of a tape draw-out recess 117 formed on the front surface of the cassette case 113 before tape loading is performed.

When the tape cassette 112 is attached to the DATI, the cassette case 113 is placed on the cassette positioning bins 118 and 118 provided on the mechanical chassis 2 and a cassette placement section (not shown) to position the tape. The reel engaging shaft 30.30' of the reel stand 24.25 is engaged with the reel 115.116, thereby
The S reel 115 and the S side reel stand 24 as well as the T reel 116 and the T side reel stand 25 are in a state where they each rotate integrally.

(k. Operation) Operations such as tape loading, tape unloading, tape running at high speed, and recording or reproduction by the DATI configured as described above are performed, for example, as follows.

(k-1, initial state) [Figure 1] Before tape loading is performed, DATI is in the following initial state.

That is, since the electromagnetic plunger 38 is in a de-energized state and the release link 42 is held in the non-release position, the lock slider 5o is in the centering position.
The main brake arm 33.33' is held in the braking position. Also, loading block 20.20',
The pinch roller arms 15 are each held in a non-loading position, and therefore the reel platform locking lever 98
is held in the locked position, and the control lever 58 is held in the forward position.

Therefore, the first swing gear 85 and the second swing gear 95
Both are centered, and the reel stands 24, 2
5 is applied with a main brake by main brake arms 33, 33' and a soft brake by control lever 58.

In this state, the tension gear arm 1'05 and the free dash guide 111 are also in the non-loading position.

The tape cassette 112 is attached to the DAT 1 in this state.

(k-2, Tape Loading) [Figures 1 and 2] When the tape cassette 112 is installed in the DATI, the pinch roller 18, the tension bin 106, and the fridashi guide 1
11. The tape loading post 21.21' and the inclined guide post 22.22' of the tape loading block 20.20' are located inside the portion of the magnetic tape 114 that is led out of the cassette case 113.

Therefore, when a command to perform tape loading is issued, the electromagnetic plunger 38 is energized, the main brake arms 33, 33'' move to the brake release position, and the lock slider 50 moves to the centering release position. As a result, the main brake on the reel stand 24.25 is released, and the centering of the rocking gear 85.95 by the lock slider 50 is released. At the same time, the pinch roller arm 15 is moved to the standby position and the ten leg arm 105 is moved to the position shown in FIG.
8 is moved to the unlocked position, the lock to the T-side stool base 25 is released.

Therefore, the magnetic tape 114 is pulled out by a predetermined amount from the cassette case 113, and the pulled out portion is attached to the tape guide post 107. .

108, tape loading post 21, inclined guide post 22, head drum 7, inclined guide post 22',
The tape is wound in this order around the tape loading post 21', tape guide post 109, capstan 10, fridging guide 111, and tape guide post 110, and passed through the bus shown in FIG.

In the above manner, tape loading is completed.

Note that when the tape loading is completed, the excitation to the electromagnetic plunger 38 is released, and the release link 42 returns to the non-release position, so that the lock slider 5
0 is returned to the centering position and the two swing gears 85.
At the same time, the main brake arms 33, 33' are returned to the braking position to apply the main brake to the reel stands 24 and 25.

As a result, DATI becomes stopped.

(k-3, High-speed running of tape) [Figures 2 and 5] The high-speed running of the magnetic tape 114, such as fast forwarding and rewinding, is performed in this stopped state, that is, when the pinch roller 18 and the ten-legged bin 1
This is done by rotating the capstan motor 14 in the reverse or forward direction at high speed from a standby state where the magnetic tape 06 does not come into contact with the magnetic tape 114.

That is, when a command to fast-forward or rewind the tape is issued, the electromagnetic plunger 38 is energized, the main brake applied to the reel stand 24.25 by the main brake arm 33.33' is released, and the lock slider 5
0 moves to the decentering position, thereby
Only the centering for the second swing gear 95 is released (in this state, the control lever 58 is in the forward position, so the centering by the control hole 64 of the control lever 58 is canceled for the first swing gear 85). has been done.

), the capstan motor 14 is rotated reversely or forwardly at high speed, thereby causing the second swing gear 95 to move to the T side.
Second driven gear 28' of reel stand 25 or S side reel stand 2
The T-side slide 2 is meshed with the second driven gear 28 of No. 4.
5 or S side reel stand 24 is rotated at high speed in the tape winding direction.

Thus, the mode becomes fast forward mode or rewind mode.

Note that when the command to run the tape at high speed is released, the excitation to the electromagnetic plunger 38 is released, so the lock slider 50 centers the swing gears 85 and 95, and the main brake is applied to the reel stands 24 and 25. It will be called.

(k-4, recording or reproducing) [Fig. 3, Fig. 6] Furthermore, recording or reproducing from the stop state, that is, the magnetic tape 11
When a command is issued to perform a predetermined operation on the magnetic tape 114 while running the magnetic tape 114 by the capstan 10 and the pinch roller 18, the electromagnetic plunger 38 is energized and the main brake for the reel stand 24, 25 is activated. At the same time, the centering of the rocking gears 85 and 95 by the lock slider 50 is released, and the pinch roller arm 15 is moved to the crimping position. Therefore, the reel stand lock lever 98
is moved from the previous lock release position to the rear brake release position, so the reel stand lock lever 98
The pressing protrusion 102 presses the pressed edge 63a of the control lever 58 to move the control lever 58 to the retracted position.

This causes the brake shoe 62 . of the control lever 58 .
At the same time, the soft brake applied to the reel 24, 25 by the control hole 62 is released, and the previous centering of the first swing gear 85 by the control hole 64 is released, and conversely, the centering of the second swing gear 95 is performed. That will happen.

When the command at this time is a command to form a forward play mode, the capstan motor 14 rotates in the forward direction, and when the command at this time is a command to form a reverse play mode, the capstan motor 14 rotates in the reverse direction. become.

Therefore, when the capstan motor 14 rotates forward, the first
The swinging gear 85 meshes with the first driven gear 27' of the T-side thread stand 25 via the right intermediate gear 68', and the T-side thread stand 25 is rotated in the tape winding direction. This means that
Also, when the capstan motor 14 is reversed, the first
The swing gear 85 meshes with the first driven gear 27 of the S-side reel stand 24 via the left intermediate gear 68 to rotate the S-side reel stand 24 in the tape winding direction.

At the same time, the capstan 10 is rotated at a constant speed and the magnetic tape 11 is rotated in the forward play mode.
4 is run at a constant speed in the forward direction, and in the reverse direction in the reverse play mode, the magnetic tape 114 running in this way is transported to the T reel 116.
Alternatively, as the tape is wound onto the S reel 115, the rotating portion 7a of the head drum 7 is rotated, thereby causing the magnetic heads 8, 8, . . . to perform recording and reproduction on the magnetic tape 114.

(k-5, tape unloading) When a command is issued to unload the tape from the stop state, the electromagnetic plunger 38 is energized, and the loading block 20, 20', pinch roller arm 15, and fridashi guide 111 and the ten leg gear arm 105 are both returned to the non-loading position, and the reel stand lock lever 98 is returned to the lock position. Note that when tape unloading is performed, the first swing gear 85 is centered by the control lever 58, but the second swing gear 95 is centered by the electromagnetic plunger 38 being excited. is released, the second swing gear 95 rotates the S-side reel stand 24 in the tape winding direction by rotating the capstan motor 14 in the normal direction, thereby causing the magnetic field drawn out from the tape cassette 112 to Tape 114 is wound onto S reel 115.

(G. Effects of the Invention) As is clear from the above description, the tape player of the present invention drives the supply-side reel stand and the take-up tape reel, each of which has a jaw section and drives the supply-side tape reel. A take-up reel stand, a pinch roller that is pressed into contact with and separated from the capstan with the magnetic tape in between, a motor for rotating the capstan, and a rotational lever to which the rotational force of the motor is transmitted, respectively. The rotating drive gear is supported by the rotating end of the rotating lever, and is rotated in constant mesh with the drive gear, and is rotated according to the rotational direction of the drive gear.
a first and a second rocking gear mechanism that is biased with a moving force to a position where it meshes with one of the two reel stands; The rotating lever of the first swinging gear mechanism is allowed to rotate, and the second swinging gear mechanism is held in a neutral position where the swinging gear does not mesh with any reel base, and the magnetic tape is made to run at high speed. and a control means for enabling rotation of the rotary lever of the second rocking gear mechanism and holding the first rocking gear mechanism in a neutral position in which the rocking gear does not mesh with any reel stand. It is characterized by:

Therefore, according to the tape player of the present invention, when the magnetic tape is caused to run by the capstan and the pinch roller, the swing gear of the first swing gear mechanism is operated on the supply side and on the winding side depending on the rotation direction of the capstan motor. When making the magnetic tape run at high speed, the swing gear of the second swing gear mechanism is set to either of the two reel stands depending on the rotational direction of the capstan motor. Therefore, only two swing gear mechanisms are required to drive the reel stand in four different ways: tape winding on the supply side reel stand when the magnetic tape is run by a capstan and a pinch roller; driving the reel stand on the take-up side in the tape winding direction, driving the reel stand on the supply side in the tape winding direction and driving the reel stand on the take-up side in the tape winding direction when making the magnetic tape run at high speed. can be selectively driven.

Moreover, since most of the two swing gear mechanisms can be arranged between the two reel stands, there is an advantage that the space required for their arrangement is small.

In the embodiment described above, switching between the movable state and the movable state of the two swing gears was performed by the B moving member for controlling the locked state of the reel stand and applying a soft brake. Accordingly, the above-mentioned switching to the swing gear can be performed using a member that is necessarily provided in this type of tape player.

However, in carrying out the present invention, special means may be provided for switching the swing gear to a movable state.

Further, in the above embodiment, a belt type transmission means is used as a means for transmitting the rotation of the capstan motor to the drive gear of the swinging gear mechanism, but this transmission means may be a gear mechanism.

In the above embodiments, the present invention was applied to a DAT, but the present invention is not limited to such an example of application, and the present invention is not limited to such an application example. The present invention can be applied to various tape players in which two reel stands are driven by a capstan motor.

[Brief explanation of the drawing]

Figures 1 to 11 show an example of an implementation in which the present invention is applied to a DAT. Figure 1 is a plan view of a mechanical deck in an initial state where tape loading is not performed, and Figure 2 is a plan view of a mechanical deck in an initial state where tape loading is not performed. FIG. 3 is a plan view of the mechanical deck in the play mode, FIG. 4 is a plan view of the mechanical deck in its initial state with the lower portion partially cut away from the mechanical chassis, and FIG. 5 6 is a plan view of the main part of the mechanical chassis in high-speed running mode with the lower part partially cut away; FIG. 6 is a plan view of the main part of the mechanical chassis in the play mode with the lower part cut away; Figure 7 is the ■− of Figure 3.
■A sectional view taken along the line, Fig. 8 is a rear view of the main part, Fig. 9 is an enlarged sectional view taken along line IX-IX in Fig. 1 with some parts omitted, and Fig. 10 is the main part. FIG. 11 is a flowchart, and FIG. 12 is a plan view of essential parts showing an example of a conventional reel stand driving means. Explanation of symbols l... Tape player, 10... Capstan, 14... Motor, 18... Pinch roller, 24... Supply side reel stand, 25... Winding side reel stand, 27 .28... Gear part (of the supply side reel stand), 27', 28'... Gear part (of the take-up side reel stand), 50.53.54.58.64... Control means, 80 ...First rocking gear mechanism, 81... Drive gear, 82... Rotating lever, 85... Rocking gear, 89... Second swinging gear mechanism, 90... Drive gear, 91... Rotating lever, 95... Rocking gear, 114... Magnetic tape, 115... Supply side tape reel, 116... Winding side tape reel Applicant: Sony Corporation

Claims (1)

[Claims] A supply-side reel stand that drives the supply-side tape reel, a take-up reel stand that drives the take-up tape reel, each having a gear part, and a pinch that is crimped to the capstan with the magnetic tape in between so as to be able to come into contact with and separate from the capstan. a roller, a motor for rotating the capstan, a rotary lever, a drive gear that rotates by being transmitted with the rotational force of the motor, and a drive gear that is supported by the rotary end of the rotary lever and that is always connected to the drive gear. first and second swing gears, which are rotated in mesh and are biased with a moving force to a position where they mesh with one of the two reel stands depending on the rotational direction of the drive gear; a mechanism that allows rotation of a rotation lever of the first swing gear mechanism when the pinch roller is pressed against the capstan;
The second oscillating gear mechanism is held in a neutral position in which the oscillating gear does not mesh with any reel base, and the second oscillating gear mechanism is capable of rotating a rotating lever when running the magnetic tape at high speed. A tape player comprising a control means for holding the first swing gear mechanism in a neutral position where the swing gear does not mesh with any reel stand.