JPS5982659A - Loading device - Google Patents

Abstract

PURPOSE:To improve the positioning accuracy of a magnetic tape to a rotary drum by separating the unloading of a magnetic tape from the winding the tape around the rotary drum and winding the tape around a tape guide at the end of the loading. CONSTITUTION:When a positive/negative rotation driving means 50 is started from non-loading state and a disc is positively rotated, a shaking arm 53 is shaken by the actions of a cam 52 and a cam roll 55, a driving arm 26 is shaken in the clockwise direction by a locking pin 26a, and the magnetic tape 10 is unloaded from a tape cassette by a tape unloading pin 33 on the outlet side. Since the positive rotation speed of th disc 17 is slower than the shaking speed of the driving arm 26, the magnetic tape 10 is unloaded by an unloading roll 22 after unloaded by the unloading pin 33. When the disc is positively rotated moreover, the main part 20b of an arm 20 is slided and contacted to/with an engaging pin 38 and loaded to the outside, the roll 22 is separated from the magnetic tape 10 and the magnetic tape 10 is transferred to a tape guide 18b on the outlet side.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loading device employed in a magnetic recording/reproducing device such as a video tape recorder. This invention relates to a loading device for passing over a magnetic tape running path.

FIG. 1 shows an outline of a loading device in a general magnetic recording/reproducing device.

In Fig. 1, a rotating drum (2) containing a rotating magnetic head (]) (1) is arranged on a substrate (3) at an angle of a predetermined angle. Separately, each tape guide (4
) (5), a magnetic head (6) for recording and reproducing audio signals and rotation control signals, a capstan (7) for running a magnetic tape, and its pinch roller (8). The tape cassette (9), which holds a set of supply and take-up reels 01) for winding the magnetic tape θ1, has a notch (13a) formed on the side edge of the tape cassette (9).
) (18b) (18G), but place the 11 tape guide (4), outlet tape guide (5), and capstan (7) so that they can fit into the board (3)-1-. The magnetic tape (10 passes through the internal guide bin 0→αQ, and each of these notches (18a) (
18b) (18c).

During magnetic recording and reproduction, each tape guide (4) (5) on the entrance side and the exit side moves along the path indicated by the dotted line arrow with the magnetic tape αq from the notch (18a) (TAB) position to the non-set position. This magnetic tape 0q is wound around the outer peripheral surface of the rotating drum (2) over a mechanical angle exceeding 180 degrees, and at the same time is pressed against the surface of the magnetic head (6), and the pinch roller (8) is used to wrap this magnetic tape θ9. is sandwiched between the capstan (7), and after magnetic recording/reproduction is completed, it is returned from this set position to the non-set position.

In such a magnetic tape θ traveling system, each tape guide (4) (5) on the inlet side and outlet side of the - row plays an extremely important role in loading the magnetic tape Oq onto the rotating drum (2). As a result, the magnetic tape θ (1 rotating drum (2
) requires high mounting accuracy for positioning. These tape guides (4) on the entrance and exit sides regulate the running of the magnetic tape Oq around the rotating drum (2).
5) is movable, so if the positioning accuracy is poor, magnetic tape compatibility cannot be achieved.

It is also necessary to interlock these tape guides with each other =!
5, there are many difficulties in satisfying these conditions1 (
was there.

This invention has been made in order to eliminate the drawbacks of the conventional loading devices described above.

That is, the present invention provides a method for loading a magnetic tape from a tape cassette, in place of the conventional method in which the magnetic tape is pulled out from a tape cassette and wound onto a rotating drum directly by means of a tape guide. In addition to separating the drawer and winding on the ram, each operation of kneading, etc. is performed without using the tape guide, and winding of the magnetic tape on the tape guide is done by loading.) This is done only in the 5th period, and in this way, the positioning accuracy of the magnetic tape for rotations 1 to 7 and 2 is made 1 to 4 and 9 to 9.

Next, embodiments of the invention will be described with reference to the drawings.

FIG. 2 shows the non-loading state when the tape cassette (9) is mounted on the board (3). In the figure, a disk αη supported by a substrate (3) is capable of reciprocating rotation around its center O. A rotating drum (2) containing a rotating magnetic head at an eccentric position p of this disk Oη
is placed in an inclined position. An entrance tape guide (18a), an exit tape guide (18b), and two inclined vias (19a) (19b) are installed on the disk α force around the rotating drum (2).

Among these, the tilted bin (19b), tilted pin (19a), and outlet tape guide (18b) are arranged in the notch 0→ of the tape cassette (9) in the non-loading state shown in FIG. It has become. in particular,
At a position away from the inclined pin (19b) in the forward rotation direction A of the disk Oη (see FIGS. 3 to 5), the inclined pin (
19a) The tape guide on the outgoing side (18b) is in the same direction A.
The arm holder having the circular arc portion (20a) which is provided in the order of the convexity has its proximal end connected to the exit side tape guide (18) by the bottle (20C).
b) It is pivotally supported on the nearby disk Q7], and in the non-loading state, its arcuate portion (20a) extends so as to surround the negative side of the exit side tape guide (18b) and the inclined pin (1gb). It will be arranged in such a way that That is, the arm (A) is biased clockwise in FIG. 2 by an elastic member Qυ such as a coil spring stretched between the arm (A) and the disk 07), and its main portion (20b) is pushed toward the inclined pin ( 1
9a). Then, a tape pull-out roller (
4) is supported.

The tape pull-out roller (4) is located immediately before the tape guide (18b) on the output side in the non-loading state.
Moreover, it is positioned within the notch 01 of the tape cassette (9). As shown in FIG. 10, this tape pull-out roller (2) is rotatably supported by a support bin, and is long enough to be equal to the width of the magnetic tape. Here, - the exit side tape guide mentioned above (
18b), the tilting pins (19a) (19b) and the tape pull-out roller (2) are tilted with respect to the disk αη at the same mechanical angle.

Next, install the magnetic tape exit section (9) of the tape cassette (9).
a) A swinging arm (C) is provided on the nearby board (3), and a tape drawer bin (C) on the prosthesis side provided at the tip of the swinging arm (C) is designed to prevent tape force in the non-loading state. It is positioned within the notch 0.1 of the set l-(9).

On the other hand, a drive arm (A) is pivotally supported by a support bin (A) on the substrate (3) near the magnetic tape entrance (9b) of the tape cassette (9). 11th
As is clear from the figure, the drive boom (A) consists of a first arm (C) and a second arm. 1st A-(A)
has a falling portion (28a) at its tip, while the second arm has a rising portion (29a) pivotally supported by the falling portion (28a) via a pin. Then, between the vertical part (29a) and the vertical part (28a), the second arm (E) is connected to the first arm (Fig.
A spring 6υ is interposed that swings in a certain direction around the
A stopper is provided on the first arm for positioning the second arm against the bias of the spring.

An exit tape drawer bin is provided at the tip of the second arm. Also, when the drive arm (c) is swung clockwise by a certain angle from the state shown in FIG. It is set in. As shown in FIG. 12, this stopper part has V-shaped retaining grooves (35a) (86a) extending over two stages, upper and lower.
The V-shaped engagement groove (85a) on the upper side is located slightly forward of the retaining groove (36a) on the lower side.

Furthermore, in the non-loading state, the substrate (
3) A retaining pin (c) provided at the tip of the supporting part phase (b) is arranged.

In Fig. 2, the handle is a magnetic head, (41 is a capstan, 0υ is a pinch roller,
The support arm 04 is swingably provided on the substrate (3).
It is set in.

Figure 18 shows the operating mechanism of the disk α force, the tape drawer bin on the artificial side (c), the tape drawer bin on the outlet side (to), and the pinch loaf 0υ. Indicates the condition.

In FIG. 18, m connected to the forward/reverse rotation drive mechanism ω
*II) and the cam plate 6'4 are provided coaxially and integrally with the disk 0η. The forward and reverse rotation drive mechanism includes a forward and reverse rotation motor (50a) and a transmission mechanism (50b).
and a speed reduction mechanism (50, 0), which drives the disk 0η to reciprocate.

The figure 7-shaped swinging arm (having a first branch (58a) and a second branch (58b)) has its branches pivoted to the base plate (3) by the bin $1. The first branch (58
A) is provided with a cutter roller (G), and an elastic member that biases the swinging arm 6 frame in a direction that causes the cam roller to always follow the cam plate 64 is connected to the swinging arm Q and the substrate. (3). In addition, the first branch (58
A long hole-shaped guide portion is provided in a), and a locking pin (41a) is fixed to this guide portion, which is hung vertically from the pinch roller 01). On the other hand, the second
The branch portion (58b) is also provided with a guide portion ←7) in the form of a long hole, and this guide portion is also locked with a locking JJ-bin (26a) that is vertically installed from the drive arm (1) in η. . Further, a connecting link is provided between the main part of the swinging arm (58C) and the swinging arm Q of the tape drawer bin (c) on the person side. , when the swinging arm) is swung clockwise around the bin q from the state shown in FIG. 18, the locking pin (41a) of the pinch lower Q) is It is guided by the guide portion (G) and moves toward its terminal end, reaching the state shown in FIG. 14. In this case, the locking pin (
26a) is guided by the guide portion 6 and moves to its terminal end side to be in the state shown in FIG. 14. A dead man,
The support arm I47J of the pinch loaf θl) is provided with a trigger lever via its support pin, and a pinch roller pressing mechanism button) is provided in correspondence with the trigger lever. This pinch roller pushing mechanism ^
1) is an electromagnetic plunger (61a) and an electromagnetic plunger (6
It consists of an engaging part (6l b) which is moved in and out by 1a).

Next, the operation will be explained.

When the forward and reverse rotation drive groove ω is started from the non-loading state shown in FIG. 2 to cause the disk Qη to rotate forward and backward, at the beginning of the forward and backward rotation, the Y-shaped swinging arm Z is moved by the action of the cam plate 04 and the cam roller Z. It is gradually swung clockwise from the position shown in FIG. 18 to the position shown in FIG. 14. The pinch loaf 0υ that is locked to the guide portion 6〉1〆ζ by the fl axis of such a swinging arm +h bin (41a)
is moved toward the terminal end of the guide portion (4), so that the pinch roller 0υ is displaced to a position facing the capstan (6) as shown in FIG. The engaged W pin (26a) of the drive arm (to) which is engaged with the other guide part←η
is rapidly pushed toward the end of the guide portion 6″I), so that the drive arm (
A) is swung clockwise from the position shown in FIG. 2 to the position shown in FIG. While the swinging arm (a) is swinging, the exit side tape drawer bin (to) is held perpendicular to the board (3), so the magnetic tape 0 [is this exit side tape drawer bin]. The tape can be pulled out from the tape cassette easily. In the state shown in FIG. 8, the outlet tape drawer bin C33 is locked to the stopper member 1 and is operated (peeled off) at a certain angle. 8'S is swung counterclockwise by the action of the connecting link 6→.
Displace to the position shown in Figure 3. Therefore, the magnetic tape (1(
1 is pulled out and pressed against the magnetic head (g). 1 On the other hand, the forward rotation speed of the disk 0η must be slower than the catching speed of the drive arm QQ, 1/1, so that after the magnetic tape 0q is pulled out by the exit side tape drawer pink 31, a certain deviation in quimming is maintained. Then, the magnetic chief Ql is pulled out from the tape drawer 70 (in other words, the C-build cassette (9)).
Magnetic tape (IG drawer) by tape drawer bin (l
4, l-1r for speed.

The speed at which the magnetic tape OQ is pulled out by the tape pull-out roller (c) is slowed down. Magnetic tape (IQ, as if from then on
In the state where it is applied, it is displaced from the position shown in Fig. 2 to the position shown in Fig. 3.

As the disk Oη continues to rotate back and forth, the magnetic tape O
q will be drawn out by the tape drawing roller (2). When the tape pull-out roller (4) is moved to the position shown in FIG. 4 by the forward rotation of the disk aη, the main portion (20b) of the arm holder is locked to the engagement pin (2). Therefore, when the disk αη is further rotated, the arm (
The main part (20b) of 1) is slid to the outside of the retaining bottle (c) while slidingly contacting it. Therefore, as shown in Fig. 5, the arc part (20 &) of the arm
b) and is released from the front part of the tape pull-out roller (
E) is cut off from magnetic tape 0q, and magnetic tape QQ
is delivered to the exit side tape guide (18b). As a result of the above, the magnetic tape (11) is spread over the magnetic tape running path, and the magnetic tape (4) is wound around the rotating drum (2) at a mechanical angle exceeding 180 degrees.

In the above, while the magnetic tape θq is being pulled out by the exit side tape drawer bin (to), the outlet side drawer bin (to) is vertical, but the tape drawer roller (2) is inclined. Therefore, between the exit side tape drawer bin (c) and the rotating drum (2), the magnetic tape (10) is tilted so that the rotating drum (2) side is at the bottom. However, the tape drawer roller (a) is As is clear from the above, since the magnetic tape θq is only lightly touching the magnetic tape cutter, the magnetic tape θq can be easily inserted into the tape cassette (9).
drawn from. In addition, the tape drawer bin on the exit side (to)
In the upper part, the magnetic tape 01 is held horizontally. In addition, in the process from FIG. 8 to FIG. The winding position of the magnetic tape 4 on the magnetic tape 4 gradually shifts from the position of the imaginary line in FIG. 1O to the position of the solid line. In this case, since both the exit side tape pull-out pin and the tape pull-out roller 4 are rotatable, the magnetic tape (11
No excessive force is applied to 1.

As shown in FIG. 11, when the loading of the magnetic tape 000 is completed, the electromagnetic plunger (61a) is energized. Therefore, in the state shown in FIG. 11, the pinch lower (8) is
The tricareno (-1) is rotated clockwise, and the magnetic tape θq is pressed against the capstan (7) by the pinch lower (8).

As is clear from the above explanation, the transition from the loading state to the non-loading state is performed by the above-mentioned reverse operation, in this invention,
Even though the setup is as simple as simply rotating the disk, it becomes possible to determine the running path of the magnetic tape with high precision.

In this case, the magnetic tape can be easily pulled out from the tape cassette and wound around the circumferential surface of the rotating drum. In particular, since the tape guides and rotating drums on the entry side and outlet side, which require a high degree of mutual positioning accuracy, are all integrated, their mutual positional sensitivity can be easily increased.

Therefore, it will be particularly useful if applied to portable type cassette video recorders, etc.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a general loading device, FIGS. 2 to 5 are plan views showing a loading device according to an embodiment of the present invention, and FIG. 6 is a plan view showing a loading device according to an embodiment of the present invention. 7 is a sectional view taken along the line ■-■ in FIG. 2, FIG. 8 is a sectional view taken along the j'll+-■ line in FIG. 2, and FIG. 9 is a sectional view taken along the A cross-sectional view taken along the line IX-IX in Figure 5,
Figure 1O is a sectional view of the tape pull-out roller, Figure 11 is a side view of the tape pull-out bin, W< Figure 12 is a front view of the tape pull-out bin locked to the stopper part, and Figure 11 is a side view of the tape pull-out bin.
3 and 14 are plan views of the actuation mechanism. (1)... Rotating magnetic head, (2)... Rotating drum, (3)... Substrate, (9)... Tape cassette, (
”q...Magnetic tape, (Iη...Supply reel, @・
...Take-up reel, Oη...disk, (181))
...Tape guide, (A)...Arm, (2υ...
Elastic part, (4)... Tape pull-out roller, (26a
)...Lock pin, (G)...Tape drawer bin, (
(F)... Stopper member, 0... Cam plate, Information... Swinging arm, (G)... Cam roller, 67)... Guide portion. In addition, in the figure, the same code|symbol shows the same or + aim part. Agent Makoto Kuzuno (and 1 other person) Figure 2 r″B,, i3 NI[l,. 17 □I Liao-4 8 8a 26/ \, 20” 噌a 04oz,, 18b21, 1 396 22 2410 019b 25 339b 27 , -- 4142 //13 \, 1. l \ri8;--~1 Figure 3 11 11'II'f54
Figure 6 Figure 10 Figure 11 Figure 12 2β Figure 13 50

Claims (4)

[Claims] (1) A magnetic tape pulled out from a tape cassette containing two reels lined up at the same height is wound around the circumferential surface of a rotating drum containing a rotating magnetic head over a mechanical angle exceeding 180 degrees to form a predetermined magnetic tape. In a loading device that runs along a magnetic tape running path, a disk is rotatably provided on a substrate that supports a rotating drum and a tape cassette is attached to and removed from it, and the magnetic tape is pulled out from the tape cassette to the end of the magnetic tape running path. A tape pull-out bin, a tape guide for guiding the running of the magnetic tape at the end of the magnetic tape winding on the rotating drum, and a tape pull-out roller for winding the magnetic tape pulled out from the tape cassette onto the rotating drum, An interlocking mechanism is provided between the disk and the tape drawer bin to move the tape drawer bin from the inside of the tape cassette to the end portion of the magnetic cape running path at the beginning of the forward and backward movement of the tape,
A tape guide is provided on the disk, and a tape pull-out roller is supported by an arm swingably provided on the disk, so that at the beginning of forward movement of the disk, this tape pull-out roller is positioned just in front of the tape guide at the 7 o'clock position. At the end of the forward movement of the disk, an arm operation mechanism is provided to move the arm (see E) to release the tape pull-out roller from the front part of the tape guide, After the tape is pulled out from the tape cassette, the magnetic tape is wound around a rotating drum by a tape pull-out roller, and then the magnetic tape is wound from the tape pull-out roller at the end of one turn of the magnetic tape on the first drum. A loading device characterized in that it is configured to be delivered to a tape guide. (2) At the beginning of the magnetic tape drawer, the tape drawer bin should be positioned perpendicular to the substrate.
The loading device according to claim 1, in which the magnetic tape is positioned at a predetermined inclination angle with respect to the substrate at the end of drawing out the magnetic tape. (3) The arm operating mechanism includes an elastic member that elastically biases the arm so that the tape pull-out roller is always positioned immediately in front of the tape guide at the beginning of the forward and backward movement of the disk, and an elastic member that elastically biases the arm so that the tape pull-out roller is always positioned immediately in front of the tape guide at the beginning of the forward and backward movement of the disk, and an elastic member that elastically biases the arm so that the tape pull-out roller is always positioned in front of the tape guide at the beginning of the forward and backward movement of the disk. The first aspect of the present invention comprises a stopper member that comes into contact with the arm that moves as the tape guide moves, and causes the arm to escape from the front part of the tape guide, thereby severing the edge of the magnetic tape. Loading device for the first or second term. (4) The interlocking mechanism includes a cam plate provided on the outer periphery of the disk, and a swing arm that swings following the cam plate.
The kite part is provided with this Jm mJ wire member so as to extend in the direction crossing the swinging path of the swinging arm, and the engaging part is made to follow this guide part and is integrally provided with the tape drawer bin. A loading device according to claim 1 and 2 and claim 3, which comprises a locking pin.