JPS58220266A - Automatic tape loading device - Google Patents

Abstract

PURPOSE:To minaturize a mechanism related to a tape loading motion, by oscillating an arm member which supports a loading member while a ring-shaped matter is turning so that the loading member moves along its moving path. CONSTITUTION:A loading motor 74 is actuated with a recording or reproducing operation, and a ring 60 turns toward an arrow F. Then a support stage 20 is pulled by an arm member 64 while two projections 20a and 20b on the lower side of the stage 20 are guided by a guide groove 22. In this case, the member 64 moves while oscillating toward an arrow C so as to compensate an error of the ring diameter direction of a pin 63 of the groove 22 to the turning locus. The stage 20 moves with oscillation toward an arrow D in response to the extending direction of the groove 22. As a result, the diameter of the ring-shaped matter can be reduced by an amount equivalent to the length of the member 64.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape self-loading '4A edict, and in particular to an apparatus that performs a tape loading operation by moving a loading member along a movement path on a chassis using rotation of an annular body. To provide a j-b automatic loading device which has a structure in which an arm member is provided on an annular body and a n-ding part is supported on the arm member, thereby making it possible to reduce the diameter of the annular body and making the whole compact. The purpose is to

Conventionally, there has been a mechanism that automatically performs a tape loading operation by moving a loading member along a predetermined movement path on a chassis using an annular body (rope, imbling). Conventional mechanisms of this kind have, for example, a loading ring with a radial elongated hole (J), in which a loading member on the chassis is fitted into the elongated hole, and when the ring rotates, the loading member is inserted into the elongated hole. (in other words, in the radial direction of the ring), and moves along a guide groove on the chassis. Therefore, although the mechanism itself is highly reliable, the loading ring must sufficiently cover the guide groove, resulting in a large diameter and a large mechanism.

On the other hand, in recent years, recording and reproducing devices that are significantly smaller than conventional tape cassettes and use compact tape cassettes, which are smaller in size than standard tape cassettes, are being commercialized. The above-mentioned automatic tape loading mechanism cannot be applied because the disposed members get in the way.

Therefore, the present invention is designed to be miniaturized so that it can be applied to a small-sized recording/reproducing apparatus without any problems, and one embodiment thereof will be described below with reference to the drawings.

FIGS. 1 and 2 show the stop mode and recording/playback mode 11 of a small automatic tape loading type recording/playback apparatus to which the tape automatic loading apparatus of the present invention is applied, respectively. The state at 'l is shown.

This recording/reproducing device 1 includes a guide drum 3 on a chassis 2.
．． A reel drive mechanism, etc. is provided, and a tape mounting @ mechanism 4 etc. shown in FIG. 3 is provided on the bottom side of the chassis.
It does not have a nabushashi.

In the stop F mode, as shown in FIG. 1, the pair of loading balls 10 and 11 and the tension ball 12 are located in the small tape cassette 13 respectively installed.
The audio control i-roll head (hereinafter referred to as A/C head) 14 is retracted one step from the guide groove 15, the pinch roller 16 is separated from the capstan 17, and the supply reel stand 18 and tape winding gear The bodies 19 are each braked.

One recording or playback operation activates the tape device! 7! Mechanism 4
As will be described later, in operation 1, as shown in FIG. 2, the loading ball support bases 20 and 21 move along the guide grooves 22 and 15 of the chassis 2, respectively, and the magnetic tape 23 is locked to the balls 10 and 11. The tape is then pulled out of the cassette 13 and a tape loading operation is performed. The support stand 20 is a rotary support stand 24 (full-width drainage head 25, impedance roller 2
6) and moves, and R is eventually held in place by the stopper 27. Further, following the movement of the support base 20, the spring 29 rotates the PIN arm 28 counterclockwise in the h1 direction about the shaft 30, the tension ball 12 reaches the operating position, and the brake band 31 is tensioned. 7. Another support stand 21 passes in front of the A/'C heads 14 in the retracted position, and is finally pressed and locked by the stopper 32. Further, in the final stage of the tape loading operation, the A/C head support arm 33 rotates clockwise about the shaft 34, and the A/C head support arm 33 rotates clockwise about the shaft 34.
The C head 14 approaches the tape 23 drawn out from the cassette 13 and covers it. The c1 shaft 34 is specially long as shown in FIG. 6, and also has the function of supporting the top plate of the apparatus and preventing the top plate from coming into contact with the drum 3 even if the top plate is pressed. Also, the pinch roller support arm 35 rotates about the shaft 36 to the FZ 115 width, and the pinch roller 16 presses against the 41-I distance.

As a result, the recording/reproducing apparatus 1 enters the state 1 shown in FIG. - be attached to. The tape 23 is further helically attached to the circumferential surface of the guide drum 3 having a rotating video head between the balls 1o and 11. While the tape 23 is traveling along the guide drum 3, it is driven by a rotating video head and video signals are recorded or reproduced thereon.

The tape 23 that has come off from the guide drum 3 is A.
, / Attached to the C head 14, guided by the guide ball 38, driven by the pinch roller 16 and capstan 17, advances and enters the curry 1-13, and is wound up on the take-up reel 39. .

Regarding the reel drive system, the plunge solenoid 40 is excited by the above operation, and the reel drive motor 4.1 is rotated. When the solenoid 40 is energized, the vibration plate 42 moves to the left, and the brake shoe 43.4
4 are separated from the supply reel stand 18 and the gear body 73, respectively, and the brake is released.

Also, when the motor 41 rotates clockwise, the oscillating idler 45 comes into pressure contact with the intermediate gear 46, and the motor 4
．． The rotation of the tape 2 is transmitted through these to the gear body 19 containing the IIJ friction ridge, and further transmitted to the winding side reel 39, which rotates in the direction of the clockwise direction and rolls the tape 2.
Wind up 3.

If the stop operation is performed during the recording/playback mode, each mechanism that operated briefly for tape loading will operate in the reverse direction in the reverse order of the loading operation, and the unloading operation will be performed, and the tape loading operation will be performed.
is in the state shown in FIG.

The guide grooves 15.22 are also shown in FIG.
1. In order to improve sliding abrasion resistance and suppress noise, a guide part made by Jinifun +447.4B is provided by outsert molding on the aluminum chassis 2 to improve the structure and [noise]. It is. For this reason, the aluminum support stand 20
．． 21 is a guide member 71 as shown in FIG.
．． 7. You will be sliding the zicoracon all over the surface while riding on the 48, and it will move smoothly without making any noise. Also, almost no wear was observed on the guide members 41, 48 made of dicolane and the support bases 20, 21 made of aluminum.

Next, the configuration and operation of the tape loading machine 4M4 and its related mechanisms will be described with reference to FIGS. 3 to 10. Fig. 3 shows the state before tape loading, and Fig. 4 shows the state after tape loading.

The deep mounting machine horizontal 4 is roughly located on the bottom side of the chassis 2.
As shown in the figure, the first loading ring assembly 50% is further stacked concentrically with the second loading ring assembly 51 shown in FIG. The solid body 50° 51 rotates to move the T1.1-ding pawl 11.10, and in response to the rotation of the second ring assembly 51, the cam gear 52 rotates to move the A/C head 14 and the binding roller. 16 is configured to be moved.

As shown in FIGS. 7 and 9, the first ring assembly 50 includes a loading ring 53 having an inner m53a;
A substantially triangular sliding plate 54 that protrudes from the outer circumferential side of the ring 53 and is attached to be able to move around the ring 53 self-evidently, and a tension spring that biases the sliding plate 5/I in the force direction. 5
5 and is connected to the sliding plate 54 in a state in which it fits into the pin 56 at the top of the sliding plate 54 (position outside the ring) and can swing in the direction of the arrow Ah. It consists of an arm member 57 and a support stand 21 supported at the tip of the arm member 57. The support stand 21 has one protrusion 21 on the bottom side.
a, 21b is within 15 guides 1. - When the arm member 57 and the screw 5 are fitted and the chassis 2 is sandwiched between them,
It is connected by 8. A flanged collar 59 is inserted into this threaded part [1. The support base 21 is rotatable in the direction of the arrow relative to the arm member 57 (plane-to-plane). Therefore, the diameter of the ring 53 can be reduced by approximately the length of the arm member 57 compared to the conventional ring.

Further, the second ring assembly 51 has approximately the same structure as the ring assembly 50 with a -1" position, and as shown in FIG. 8, the loading ring 6 has internal teeth 60a and external teeth 60b.
0, a sliding plate 61, a tension spring 62, etc., which are connected to the pin 63 of the sliding plate 61, and an arm portion 4464 for supporting the support base 20.

The arm member 6/'I is rotatable in the direction of arrow C, and the support base 20 is rotatable in the direction of arrow C. The diameter of this ring 60 is also determined by an arm member 64 that can shift the support base 20 in the radial direction of the ring.
Due to the presence of the ring, the diameter of the ring can be smaller than that of a conventional ring by approximately the length of the arm member 64.

In addition, due to the presence of the sliding plate 54.61 extending outward from the ring, the outer diameter of the ring 53.60 can be reduced by the length of the arm member mentioned above, as well as by the length of the overhang mowing method described in (g) above. The rear portion of the ring 5.3.60 is accommodated in the portion directly below the drum 1\3, so that the ring 53.60 does not protrude rearward from the drum 3, and the depth dimension of the recording/reproducing device M1 becomes smaller.

Each loading ring 53.60 has internal teeth 53a.

Four circumferentially distributed locations of 60a are engaged and held by flanged guide gears 65a to 65d provided on the lower surface of the chassis. Further, as shown in FIGS. 5 and 10, the inner part 1i60a of the lower ring 60 is directly engaged with the lower drive gear 66a of the 10-worm gear 66, and the inner part 1i60a of the upper ring 53 is The teeth 53a mesh with an intermediate gear 67 that meshes with an upper drive gear 66a. Also, the outer teeth 60b of the ring 60 mesh with the cam gear 52 (FIG. 5).

This cam gear 52 is installed 51 on the shaft 68 on the bottom surface of the chassis.
, and has a cam groove 69 on the -F surface. This cam groove 69
Inside, there is a bottle 70 on the lower side of the A/C head support arm 33.
and a fan-shaped lever 7 that is supported on a shaft 71 on the bottom surface of the chassis.
The pin 73 on the lower surface side of No. 2 is fitted (FIGS. 3 and 6). The cam groove 69 is composed of an arcuate groove portion 69a having a constant diameter and a wide 1-shaped vortex portion 691) extending generally in the direction of the axis 68. Further, the fan-shaped lever 72 is connected to the pinch roller support arm \35 by a connecting lever 77.

When a recording or playback operation is performed, the loading motor 74 is started and the belt 75 . The worm gear 66 rotates in the direction of arrow E via the worm 76, the ring 60 rotates in the direction of arrow F, and the ring 53 rotates in the direction of arrow G, both with internal teeth 60a, 53.
The inner teeth 60a of the mouth are driven by a.

53a are guided by guide gears 65a to 65d, and each rotates to the position J shown in FIG. Due to the rotation of the ring 6o, the support base 20 has two protrusions 20a on the lower surface.

20b is guided by the guide groove 22 and moved by being pulled by the arm portion 64. At this time, the arm portion 64 swings in the direction of arrow C so as to compensate for the discrepancy in the ring radial direction with respect to the rotation locus of the pin 63 in the guide groove 22). Depending on the direction in which it extends, it swings itself in the direction of the arrow and moves). Further, due to the rotation of the ring 530, the support base 21 is moved to the protrusion 21a.

21b is guided by the guide hole 15) and moved by being pulled by the arm member 53. At this time, the arm member 53 is
The guide groove 15 swings in the direction of the arrow so as to compensate for the discrepancy in the ring radial direction with respect to the rotation locus of the bottle 56. It swings itself in the direction of arrow B and moves. Each ring 60.53 rotates at a certain angle beyond the state in which the support base 20.21 is locked with the corresponding stopper 27.32 and stops, and the support base 20.21 is extended for R contraction] Ile spring 62, 55J: Press to the wrist stopper 27.32
;The tape loading operation is completed (7).

Also, when the stop operation is performed, the motor 74 reverses and the ring 6
0.53 rotates in the opposite direction to the above, and the support base 20.21
is moved to the original position by the arm member 64, 57, and the tape unloading operation is performed.

In this case, the stability of movement and the certainty of final position control are generally much better when the support bases 20 and 21 are moved by being towed than when being moved by pushing. In this embodiment, the arm portions 64, 57 are configured to perform a traction action during the tape loading operation.

Further, tape loading of the tape loading mechanism 4 described above,
Regarding the area required for the unloading operation, the arm member 64.57 defines the outer edge of this area.
It is. The arm members 6/I, 57 are guided by the guides 122, 15 at their distal ends and move while swinging, and move outward from the guide groove 22.15 with respect to the ring 53.60. It moves exclusively on the lower side of the guide groove 22°15 without almost protruding. Therefore, the area occupied by the tape loading mechanism 4 is approximately the area inside the guide groove 22.15, and it can be incorporated into a small-sized device 1 without any problems. In addition, in a tape loading mechanism using a conventional ring, a ring whose outer diameter is the dimension from the center to the maximum forward guide groove position is required, which results in a large occupied area.
This cannot be practically applied to the above-mentioned small-sized device because the capstan and the like become an obstacle.

Furthermore, due to the rotation of the -L ring 0 during the tape loading operation, the cam gear 52 is rotated by a strong counter-rotation in the upper direction of the arrow in FIG. 3. During the rotation of the first half of the cam gear 1752, the pin 70.73 is guided by the arcuate groove 69a of the cam groove 69, so its position does not change, and the arm 33.35 remains in its original position as shown in FIGS. 1 and 3. is maintained. When the rotation of the cam gear 52 reaches the second half, the bins 70 and 73 are guided by the 1-shaped vortex portion 6911 of the cam groove 69, and the arm 33 is in the hour direction and the lever 72 is in the opposite direction. 'l Rotate in the 1t1J direction. When the tape loading operation is completed, the cam gear 1752 is rotated (not shown in FIG. 4), and the arm 33 is rotated by the spring 7.
8, the pin 70 or the pin 17 is rotated clockwise.
- The state of being locked at the end of the 7L 79 of the 2nd place is Δ
/C head 14 is regulated at the tape attachment position. In addition, the lever 72 pulls the lever 77 and the arm 35 rotates counterclockwise, and the pinch roller 16 is compressed by the spring force of the spring 80 and pressed against the bustan 17.

Due to the above-mentioned rotation of the manoko arm 33, the rod 81. is moved as shown in FIG. A pivot arm 84 is pivoted in the backward direction relative to the bin 85 via an L-shaped pivot lever 82 and a rod 83. Due to the above-mentioned rotation of the rotation arm 84,
The tension arm 28 rotates counterclockwise from the position shown by the dotted chain line in FIG. 2 to the position shown by the solid line. That is, the tension arm 28 rotates to the intermediate position shown by the two-point chain in FIG. It rotates to the final position at the end of the 1III operation.

At the time of unloading, the cam 1'\no 52 is rotated back to the original position shown in FIG. 3 in the lower direction by the ring 60. At the initial rotation stage of the cam gear V752, A/
C head support arm 33 and σ pinch roller support arm 3
5 returns to rotation, and the tension arm 7\28 is also pushed by the rotation arm 84 and rotated to the position shown by the dotted chain line in FIG.

In addition, in the recording/reproducing apparatus 1 described in L, when the power switch is set to A in the recording mode state shown in FIG. 2 in which the recording lock button is set to A, the pinch The pinch roller 16 is separated from the capstan 17 to prevent plastic deformation. This is done by utilizing the rotation of the gear 52 during the operation. In addition,
The same applies to the tape loading and hoop anoroloading operations described above, but the stop control of the motor 7/I during tape uncoding to separate the pinch rollers is Two prongs J1 and cam 1
! Two switches (both shown in Figure 1) are arranged around the housing 52.
! It is done by

Moreover, in the recording/reproducing apparatus 1 described above, tape! ? Send V
) The operation is as shown in FIG.
However, it has been found that the tape running load at this time is different from the tape running load in the recording/reproducing mode shown in FIG. 2. Also, looking at the reel drive system, the take-up reel 39 has a large diameter toothed flange 86 in a state where it is decelerated by the gear V body 19.
The take-up reel 39 is in a hanging state, transmitting a relatively large torque.Therefore, in the recording/reproducing apparatus 1 described above, a friction clutch with predetermined characteristics is installed in the gear body 19. Incorporating , during recording playback mode and fast forward F
- The take-up reel 39 is rotated using the same rotation transmission system as when
is rotating.

As described above, in the automatic tape device according to the present invention, the loading member moves along the movement path to the tray in accordance with the rotation of the annular body, and the tape is pulled out by the cassette 17, etc. The loading device attached to the drum in a predetermined path is provided with an arm member rotatably connected to the annular body and supporting the loading member, and the arm member allows the loading member to follow the above-mentioned movement path. Since the structure covers the swinging motion during the rotation of the female body, it is possible to compensate for the difference in the rotation trajectory of the annular body and the movement path in the radial direction of the annular body by the swinging motion of the arm member. Therefore, the diameter of the annular body can be made smaller than the conventional one by approximately the length of the arm member, and the Day 11 member moves approximately along the movement path, so that the annular body can move along the movement path. Since the tape moves without protruding to the opposite side, the area occupied by the annular body and the arm member is inside the movement path, and the mechanism related to the tape loading operation can be miniaturized. It can be used in small recording and reproducing devices, which could not be incorporated in conventional devices due to the capstan and other components, and is effective in reducing the size of recording and reproducing devices. , the tape loading operation I+,) moves while pulling the loading member, so the movement of the 18-11-gaining unit and the final position regulation are ensured, and the tape loading operation can be performed stably +1.
Furthermore, since the 71st part of the ring is connected to the outwardly projecting part of the annular body, the diameter of the annular body can be effectively reduced and the annular body can be made to protrude rearward from the back side of the drum. It is also possible to reduce the impact of the recording/reproducing device by 1q.

[Brief explanation of the drawing]

1 and 2 are plan views showing the state of a recording and reproducing apparatus in a stop mode 11) and a recording and reproducing mode to which an embodiment of the tape automatic apparatus according to the present invention is applied; 3 and 4 are plan views showing the tape loading mechanism before the tape loading operation and after the completion of the i-bu loading operation, respectively; FIG. 5;
6 is a view taken from the direction of the v-v line and the Vl-Vl line in FIG. 3, respectively; FIGS. 7 and 8 are plan views of the first and second loading ring assemblies, and FIG. The figure is a cross-sectional view along the line rX-IX in Figure 7, Figures 1 and 0 show the relationship between the two loading rings and the gears that drive them, and Figure 3 is a roughly sectional view taken along the line X-X in Figure 3. 19-11 is a sectional view taken along the line XI--XI in FIG. 1, showing the guide groove structure. 1... Recording/playback device decoy, 2... Chassis, 3... Guide drum, 4... Tape loading mechanism, 10.11...
・Loading pole, 13...small tape cutlet h
, 14...A-D A-Con 1~Roll head (A/
C head), 15.22...guide groove, 16...pinch [1-ra, 17...=V-I pushstand, 20.2
DESCRIPTION OF SYMBOLS 1... Loading ball support stand, 23... Magnetic tape, 25... Width dij left\t, 27.32.
...stopper, 50...first loading ring assembly, 51...second loading ring assembly, 5
3.60...Loading ring, 54.61...
Sliding plate, 56°63 ... Pin, 57.64-A1
Z member, 65a to 65d...with collar) I ID gear, 66
...worm gear, (i6a...lower drive gear, 6
61)...+ side drive gear, 67... intermediate gear, 74
...Loading motor. Figure 7 Seal Figure 9 Figure 8 Figure b Figure 11

Claims (3)

[Claims] (1) In a device in which a loading member moves along a movement path on the chassis in accordance with the rotation of the annular body, the tape is pulled out by knitting, and is loaded onto a predetermined path attached to the drum. An arm member is provided which is rotatably connected to and supports the loading member, and the arm member is configured to swing during rotation of the annular body so that the loading member follows the movement path. j cm
An automatic tape loading device characterized by: (2) The arm member performs the tape loading operation 11. 2. The automatic tape loading device according to claim 1, wherein the tape is moved while pulling the loading member. (3) the annular body has an outwardly projecting portion;
The "j-branch 11'" according to claim 1, wherein the arm member is connected to the projecting portion.
Meditation edict.