JPH0218744A - tape loading device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applied, for example, to a magnetic recording/reproducing device having a rotating cylinder such as a video tape recorder, in which a magnetic tape contained in a tape cassette is pulled out of the tape cassette, and the magnetic tape is removed from the rotating cylinder. The present invention relates to a tape loading device for winding the tape around the outer periphery of the tape.

Conventional technology Conventionally, a video tape recorder or a digital audio tape recorder, which is a magnetic recording and reproducing device using a helical force run-can method, has a rotating cylinder arranged on a fixed drum, and a rotating cylinder equipped with a rotating magnetic head that rotates at high speed. In addition, a magnetic tape has been put into practical use in which a magnetic tape is wound and run at an angle around the outer circumference of a fixed drum, and signals are recorded and reproduced using a rotating magnetic head.

That is, in such video tape recorders and digital audio tape recorders, the relative speed between the rotating magnetic head and the magnetic tape is increased by rotating the rotating cylinder at high speed, thereby creating an inclined recording track. This enabled high-density recording.

There are many different tape loading methods in such magnetic recording and reproducing devices, but in all cases, the tape loading moving member reciprocates to transport the magnetic tape (winding it around a cylinder once and running it). (For example, Japanese Patent Application Laid-Open No. 62-29525
Publication No. 3).

As a typical method of tape loading in a magnetic recording/reproducing device, an example of the conventional cheap loading device mentioned above will be described.

FIG. 4 shows a perspective view of a conventional tape loading device. In Figure 4, tape force set 10
1 contains a magnetic tape 104 wound between a pair of Lee/L' 102 and 103.

The rotating cylinder 105 has a rotary magnetic field L2 (not shown) on its outer peripheral surface. The drive gears 106 and 107 are
The pins 108 and 109 installed in the mechanical chassis of the magnetic recording/reproducing device are rotatably provided so as to be constantly engaged with each other, and a loading motor (not shown) is provided.
Receives rotational force. loading lever j10-1
11 has one end provided coaxially with the drive gear, and the other end is a free end on which link levers 112 and 113 are rotatably supported. In addition, the link lever 112
Inclined bases 114 and 115 at the other end of 113
is rotatably supported. The front stop inclined base 114-115 has vertical tape guides 116 and 117 and an inclined tape guide 118 for tape loading.
・119 is engaged.

The operation of the conventional tape loading device configured as described above will be described below.

As the loading motor rotates, drive gear 1
06 and 107 begin to rotate in the directions of the arrows, and accordingly, the pair of loading levers 110 and 111 also rotate in the directions of the arrows. And link levers 112-113
The magnetic tape 104 is removed from the tape cassette 101 by sliding in the direction of the broken line until the inclined bases 1141115 are pressed against the stoppers 120φ121.
It is wound around a 7-turn cylinder and run, and recorded and reproduced by a rotating magnetic head.

Problems to be Solved by the Invention However, with the above configuration, a dedicated drive source is required to load the magnetic tape, and means for transmitting the driving force from the drive source to each part of the loading device is also required. It gets complicated. Furthermore, since the components such as the levers are arranged under the tape cassette, there is a problem in that the structure of the reel stand/V drive mechanism is restricted.

In view of the problems mentioned above, the present invention is a tape loading device that performs tape loading using a driving force for moving a rotary cylinder by 5 degrees, and has a simple configuration and a high degree of freedom in design. It provides:

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a rotatable cylinder base on a substrate that supports a tape cassette with a built-in magnetic tube, and a fixed drum is fixed on the cylinder base. a rotary cylinder disposed on a fixed drum; a drive means for rotationally driving the rotary cylinder; and a drive means that engages with both a portion of the drive means and a portion of the cylinder base during tape loading to rotationally drive the drive means. It is comprised of a transmission means that transmits force to the cylinder base and releases the engagement when tape loading is completed.

Effects According to the above-described configuration, the present invention first performs tape loading using a driving force for driving a rotary cylinder, so a dedicated driving force for tape loading is not required. When the means is a direct drive type motor having an output shaft coaxial with the rotary cylinder, the components for tape loading can be arranged only around the rotary cylinder, resulting in a simplified tape that occupies a small area. It becomes a loading device. Furthermore, by providing the transmission means with a deceleration effect, an appropriate tape loading speed can be obtained even when the rotary cylinder and tape loading driving force are used together.

Embodiment Hereinafter, an embodiment in which the present invention is used as a tape loading device for a digital audio tape recorder will be described with reference to the drawings.

Figure 1 is a front view showing the tape cassette installed and before tape loading, Figure 2 is a front view showing the state after tape loading is completed, and Figure 3 is the front view of the tape cassette being loaded.
FIG. 2 is a partially cutaway side view showing the main parts of the loading device as seen along the line MM in the figure.

In each figure, 2 is a substrate, which supports a tape cassette 30 containing a magnetic tape 31 therein.

The magnetic tape 31 is substantially parallel to the substrate 2 in the state shown in FIG. 1 before tape loading. A cylinder base 1 is rotatably supported on the upper surface of the substrate 2, and is rotated about 70 degrees around an axis Q. The bottom of the cylinder motor 1 has a ring-shaped protrusion 1A, the inner surface 1B of which is tapered and has a surface treatment such as rubber lining to increase friction. 3 is a fixed drum;
It is fixedly arranged on the cylinder base 1.

A lead 3A for guiding the magnetic tape 31 is provided on the outer periphery of the fixed drum 3. Reference numeral 4 denotes a rotating cylinder on which a magnetic head 5 is mounted, which is rotatably provided coaxially with the fixed drum 3 and is rotationally driven by a cylinder motor 6. The cylinder motor 6 includes a stator coil (VeA) fixed to the bottom of the cylinder base 1, and an output shaft 3 provided coaxially with the rotation axis of the rotating cylinder 4.
2 and a rotor eB fixed near the end of the output shaft 3'2 while facing the nutator coil eA. The output shaft 32 has a tapered end portion 32A that protrudes through the rotor 6B.

The tapered rim 3e has a tapered outer peripheral portion 36A that is comb-lined, and a slide shaft 35 is fixed through the center of the tapered rim 3e. The slide shaft 35 has a tapered rim 3
One end portion 35A protruding through the substrate 2 has a tapered shape, and is supported rotatably and movably in the axial direction by a bearing 34 of a support portion 33 provided on the substrate 2. arrow E or arrow F by means not shown.
It moves in the direction of . When the tapered rim 36 and the slide shaft 35 move in the direction of arrow E, the outer circumferential portion 368 of the tapered rim 36 engages with the end 32A of the output shaft 32, and the end 35A of the slide shaft 36 engages with the inner surface of the cylinder base 1. 1B.

On the other hand, a vertical tape guide 7.1o and an inclined tape guide 8 are arranged around the rotating cylinder 4 so as to wrap it around nine times.
9 are arranged, all of which are planted on the cylinder base 1. Among these, the vertical tape guide 7.10 is substantially perpendicular to the substrate 2, and has two upper and lower flanges for regulating the running path of the magnetic tape 31.

The inclined tape guides 8 and 9 are fixed bins inclined at a predetermined angle with respect to the substrate 2.
The magnetic tape 31 running parallel to the substrate 2 is guided to the rotating cylinder 4 while running at an angle with respect to the substrate 2, and the inclined tape guide 9 is guided from the rotating cylinder 4 and directed toward the substrate 2. Magnetic tape 3 running at an angle
1 is provided to run parallel to the substrate 2. Reference numeral 11 denotes a detection bottle mounted on an arm 12 rotatably supported by a rotation center 24;
is an arm 1 rotatably supported by a rotation center 16;
It is a roller bin provided on 4. Further, 17 is a pinch roller, which is provided on the top surface of the end of the pinch roller arm 2o that is rotatably supported by the rotation center 21, and on both sides of the pinch roller, a roller guide bin 16 and a guide bin 19%E< It is planted on the upper surface of the pinch loaf arm 20. The first shaft is a capstan shaft, and is driven by a capstan motor 23 for multiple rotations. A roller bin 22 is installed on the upper surface of the substrate 2.

The operation of the embodiment configured as above will be described below.

First, when the tape force setter 1-30 is attached to the board 2 (Fig. 1), the tape force setter 1-30 is attached to the board 2 (Fig. 1). -30 aperture SoA
A vertical tape guide 7 and an inclined tape guide 8 are located therein, and a tape cassette 3 is located across the rotary cylinder 4.
A vertical tape guide 10 and an inclined tape guide 9 are located at positions opposite to 0. In other words, the vertical tape guide 7 and the inclined tape guide 8 are connected to the magnetic tape 31
The vertical tape guide 10 and the inclined tape guide 9 are located on the magnetic surface side of the magnetic tape 31. On the other hand, the taper rim 36 and the slide shaft 35 are in the state shown by the dashed line in FIG. That is, it is in a state where it is urged in the direction of arrow E by means not shown, and the outer peripheral portion 36A of the taber rim 36
is engaged with the end 32A of the output shaft 32, and the slide shaft 3
The end portion 35A of the cylinder base 1 is engaged with the inner surface 1B of the cylinder base 1. Further, at this time, the rotating cylinder 4r/'i is in a stationary state.

When tape loading is started, the rotating cylinder 4 rotates in the direction opposite to the arrow A together with the output shaft 32 and the rotor 6B. The tapered rim 36 is rotationally driven by the output shaft 32, rotates around the slide shaft 36, and transmits the rotational force to the cylinder base 1. At this time, the diameter of the slide shaft 35 is compared to the outer diameter of the tapered rim 36. Since the rotation speed of the output shaft 32 is reduced, the rotation speed of the cylinder base 1 becomes a value appropriate for tape loading. As a result, the cylinder base 1 begins to rotate in the direction of arrow A, and the vertical tape guide 7 and the inclined tape guide 8 contact the magnetic tape 31 from the non-magnetic surface side and move while engaging with the magnetic tape 31. The tape 31 is pulled out from inside the tape cassette 3°.

Meanwhile, the pinch roller arm 2Q rotates in the direction of arrow B in accordance with the above operation, and the roller guide bin 16 and the guide bin 19 move while engaging with the magnetic tape 31, and move the magnetic tape 31. Since the vertical tape guide 1o and the inclined tape guide 9 move in the opposite direction to the moving direction of the magnetic tape 31, they come into contact with the magnetic tape 31 from the magnetic surface side in the middle of their movement and engage with it. Moving. Further, the arm 14 rotates in the direction of arrow C after a slight delay from these operations.

As the loading operation further progresses, the magnetic take-up 31
is wound around the outer periphery of the rotating cylinder 4 and the stationary drum 3. At this time, by rotating the cylinder base 1 in the direction of arrow A, the magnetic tape 31 is transferred to the fixed drum 3.
The magnetic tape 31 is wound slightly above the lead 3A provided on the outer periphery of the tape without running over it, and when the tape loading is completed, the lower end of the magnetic tape 31 comes into sliding contact with the lead 3A. is realized. Therefore, the magnetic tape is not damaged due to tape loading while the magnetic tape remains on the lead.

Finally, the cylinder base 1 reaches a position where the magnetic tape 31 is wrapped around the outer periphery of the rotary cylinder 4 and the fixed drum 3 by approximately 9 degrees, and the cylinder base 1 rotates in response to a command from a means (not shown) for detecting this. When the rotation of the cylinder 4 stops, the rotation of the cylinder base 1 also stops, as shown in FIG. 2. At this time, the pinch loaf arm 2o rotates to a position where the pinch roller 17 is pressed against the capstan shaft 18, and the magnetic tape 31 engages with the roller bin 22. Further, the arm 14 also has a roller bin 13 connected to the magnetic tape 31.
rotates to a predetermined position for engaging and guiding it. The detection bin 11 reaches between the roller bin 13 and the vertical tape guide 7 by the rotation of the arm 12, and is engaged with it by pressure from the magnetic surface side of the magnetic tape 31. .

When tape loading is completed as described above and the magnetic tape runs, the taber rim 36 and slide shaft 3
6 moves in the direction of arrow F in FIG. 3 and releases the engagement with the output shaft 32 and the cylinder base 1. As a result, the cylinder bay is brought into a state in which only the rotary cylinder 4 is rotationally driven.

In addition to the effects of the invention, according to the present invention, since tape loading is performed using the driving force for driving the rotary cylinder, there is no need for a dedicated driving force for tape loading. The electric power is also reduced. In addition, when the drive means is a direct drive type motor having an output shaft coaxial with the rotary cylinder, the components for tape loading can be placed only around the rotary cylinder, which simplifies and occupies less space. A tape loading device with a small area is realized. Also,
By producing a deceleration effect in the transmission means, an appropriate tape loading speed can be obtained even when the rotary cylinder and tape loading driving force are used together.

[Brief explanation of the drawing]

1 and 2 are plan views showing one embodiment of the tape loading device of the present invention, and FIG. 3 is a partially cutaway diagram showing the main parts of the tape loading device taken along line M-M in FIG. The cutout side sectional view and FIG. 4 are plan views showing an outline of a conventional tape loading device. DESCRIPTION OF SYMBOLS 1... Cylinder base, 2... Board, 3... Fixed drum, 4... Rotating cylinder, 6... Cylinder motor, 30・・・・・・
・Tape cassette, 31...Magnetic tape, 32
...Output shaft, 36...Slide shaft, 3
6...Thebarim. Name of agent: Patent attorney Shigetaka Awano and 1 other person4.
-Kofun Shisonta 36- Teba 0 Tsumu 35- Slide axis 36-・Theno rim

Claims (3)

[Claims] (1) A substrate that supports a tape cassette containing a magnetic tape, a cylinder base rotatably supported on the substrate, a fixed drum fixed to the cylinder base, and rotatable on the fixed drum. established in
A rotating cylinder for writing and reading information on and from the magnetic tape, a driving means for rotationally driving the rotating cylinder, and engaging with both a portion of the driving means and a portion of the cylinder base during tape loading. and transmitting means for transmitting the rotational driving force of the driving means to the cylinder base, and for releasing the engagement when tape loading is completed. (2) The tape loading device according to claim 1, wherein the drive means is a direct drive motor having an output shaft coaxial with the rotary cylinder, and the transmission means engages with the output shaft of the motor. (3) Claim 1, wherein the transmission means has a rotating body shape, and the radius of curvature of the portion that engages with a portion of the cylinder base is smaller than the radius of curvature of the portion that engages with a portion of the drive means. Tape loading device as described.