JPH02210652A - Tape loading device in magnetic recording/playback 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 relates to a tape loading device for a cassette type magnetic recording/reproducing device.

[Conventional technology]

Conventionally, a tape loading device in a cassette-type magnetic recording/reproducing device has a moving base on which a tape guide having flanges at the upper and lower ends and an inclined tape guide are installed, as described in, for example, Japanese Patent Application Laid-Open No. 65-69055. ,
It was wound around the surface of the rotary head drum by moving on a guide plate that was arranged around the rotary head drum and had a guide groove passing through the top and bottom.

[Problem to be solved by the invention]

However, in the above-mentioned conventional technology, it is difficult to control the tape posture when winding the tape around the rotating head drum surface, and as a result, the tape gradually winds along the lead on the rotating head drum while riding on it. As a result, there were problems such as the edges of the leads of the rotary head drum damaging the tape, and the edges of the tape damaging the rotary head.

Therefore, the present invention reliably prevents tape damage and damage to the rotating head by suppressing vertical movement of the tape during tape loading and controlling the tape posture so that the tape follows the rotating head drum slide. It can be prevented. An object of the present invention is to provide a tape loading device for a magnetic recording/reproducing device.

[Means to solve the problem]

The above purpose is to form a guide groove from the top surface to the bottom surface,
A guide plate arranged around the rotating head drum, an upper surface K,
A tape guide having a 72-inch portion at the upper and lower ends and an inclined tape guide for changing the running inclination angle of the tape are provided, and a guide pin to be inserted into the guide groove of the guide plate is planted on the lower surface of the guide plate. In a tape loading device for a magnetic recording/reproducing device, the tape loading device has a movable base disposed so as to be movable on a plate, and an auxiliary guide disposed so as to move while appropriately winding the tape during tape loading. When the tape is wound around the rotating head drum by the upright tape guide and the inclined tape guide,
By wrapping the tape around the auxiliary guide, it is possible to suppress vertical movement of the tape during tape loading and to control the tape posture along the lead of the rotary head drum.

[Effect]

When the movable base moves on the guide plate and the tape guide and inclined tape guide installed on the movable base pull out the tape from the cassette and wind it onto the surface of the head drum device for one rotation, the auxiliary guide moves the tape. Through this series of operations, in which the tape moves while being appropriately wound, vertical movement of the tape is suppressed during tape loading, and the tape posture is controlled so that it follows the lead on the circulation head drum device. This allows tape loading without causing damage to the tape.

〔Example〕

Hereinafter, the present invention will be described in detail using the respective drawings.

1, 2, and 3 are plan views showing the overall configuration of an embodiment of the present invention. FIGS. 1 and 1 show the situation during tape loading, and FIG. FIG. 3 shows the state before the loading operation, and FIG. 3 shows the state after the tape loading operation is completed. In FIG. 1, numeral 2 is a rotary head drum device on which a rotating recording or reproducing magnetic head is mounted. 5 is a cassette on which a magnetic tape 6 is wound. An opening 7 is provided on the front surface of the cassette 3, and the magnetic tape 6 is stretched over the opening 7 as shown in FIG. When the cassette 3 is installed in the device, there is a supply side drawer guide 10 inside the opening 7.
．． A tape guide 12 and an inclined tape guide 14 are set up on a moving base 19 that moves on the supply side, and an inclined tape guide 15 is set up on a moving base 21 that moves on the winding side.
Then, the tape guide 13, pinch roller 16, and take-up side pull-out guide 11 are inserted. Above moving base 1
9 and 21 are driven by transmission of the trunk force from a certain driving source, and are driven by a guide groove 24 provided in the guide plate 23.
and 25&C on the guide plate. The tape loading completion position is determined by the fixing means 26 and 27 provided near both sides of the rotary head drum device 2.
The movable bases 19 and 21 are held in position by
The magnetic tape 6 is wound around the rotary head drum device 2.

The supply side drawer guide 10 is driven by the same drive source as the moving base and is positioned to the position shown in FIG. 3, thereby forming a tape running path on the tape supply side. That is, while the tape 6 is being pulled out by the supply-side pull-out guide 10, it passes through the supply-side tape guide 30 and the output guide that detects the tape tension run, and then passes through the inclined tape guide 40. The tape contacts the tape guide 42 and the full-width erasing head 41, and is wound around the rotary head drum device 2 by the tape guide 12 on the moving base 19 and the inclined tape guide 14.

Similarly, while the take-up side drawer guide 11 is driven by the same drive source as described above and positioned at the position shown in FIG. The tape guide 15 on the tape guide 21 and the tape guide 15 are brought into contact with the A/C head 43, and then the tape guide 44, the tape guide 45, and then the tape guide 46 are wound. The tape reaches the cassette 5 via the side drawer guide 11 and the tape guide 38, forming a tape running path on the tape winding side.

As shown in FIG. 3, the tape running path formed when tape loading is completed is three-dimensionally constructed by four inclined tape guides 40, 14, 15, and 45. In this state, the capstan 47 and the pinch row 216 crimp the magnetic tape 6,
It is driven by the driving force of a capstan motor (not shown) and causes the magnetic tape 6 to travel in one motion.

The above-mentioned tape loading is performed by a mechanism as shown in FIGS. 4 and 5. Here, FIG. 4 shows the supply side moving base drive mechanism, and FIG. 5 shows the winding side moving base drive mechanism. As shown in Figure 7,
Tape guide 12 having 7 lunges at the top and bottom ends on its top surface
A tilted tape guide 14 and a positioning shaft 20 held by the positioning mechanism are installed, and a guide pin 66.6 inserted into the guide groove 24 of the guide plate 23 is installed on the lower surface.
7 is installed with bins 68 and 69 inserted therein to prevent the movable base 19 from deviating from the guide plate 23, and a connecting plate 56 for connecting to the loading ring is attached to the front guide bin 67. A slide plate 529 is attached to the loading ring 51, and the slide plate 52 is connected to the movable base 19 via the connection plate 56.

Although not shown, the slide plate is biased in one direction by a spring, and even after the movable base 19 moves on the guide plate and is positioned by the tee loading operation, the loading ring 51 remains in the same position for a certain period. By continuing to rotate against the spring force, the movable base 19 is pressed against the positioning mechanism. The same applies to the winding side.

8 and 9 show the operating state of the supply side auxiliary guide 48, and FIGS. 10 and 11 show the operating state of the winding side auxiliary guide 49. The supply side auxiliary guide 48 is a fulcrum. In the state shown in FIG. Support members 53, 54, 55, and 62, 65, and 64 are arranged concentrically, but each is at a different height to avoid interference. Both of the loading rings 51, 57 receive driving force from one driving source through the cam gear 50, and rotate around the supporting members 53, 54, 55, 62, 63, 64. 60 and 61 are configured to rotate in opposite directions.

The auxiliary guide 48 rotates while winding around the tape 6, but when loading is completed, it escapes to a position where it does not come into contact with the tape 6. Further, 74 is a drop meter for detecting the loading operation position, and it is possible to judge the current loading operation position from the output.

The winding side auxiliary guide 49 is constructed and operated as shown in FIGS. 10 and 11. That is, a drive arm 79 having a sector-shaped gear at its negative end rotates about a rotation fulcrum 78 according to a cam groove 76 provided on the lower surface of the cam gear 50 . The gear portion of the drive arm 79 meshes with the gear 91,
Furthermore, the gear 91 shares the fulcrum 17 with the pull-out arm 18 having the supply-side pull-out guide 10 at one end.

Further, the drive arm 79 is connected to an L-shaped connecting arm 82 via a pin 80 provided at the other end, and the connecting arm 82 is connected to a slider 84 via a pin 83 provided at one end thereof. .

When the slider 84 is driven and slides, the pull-out arm 28 is rotated, and as a result, the take-up side pull-out guide 11 is rotated so as to pull out the tape 6. At the same time, a relay gear 95 is engaged with one side of the slider 84, and as the slider 84 slides, the relay gear 95 is rotated. As the relay gear 95 rotates, the drive arm 99 rotates via another relay gear 98, so that the drive bin 100 installed at the tip of the drive arm 99 connects the take-up side auxiliary guide 49 at one end. The driven member 102 slides on the cam surface of the driven member 102, and the driven member 102 rotates about the rotational fulcrum 101 according to the cam, against the spring force of the spring 103.

Similar to the supply side auxiliary guide 4B, the take-up side auxiliary guide 49 rotates while wrapping around the magnetic tape 6, but when loading is completed, it escapes to a position where it does not contact the magnetic tape 6, so that the tape It does not affect the driving route.

Figures 12, 13, and 14 show the attitude of the K1 magnetic tape 6 when it starts winding around the rotary head drum 2. Figure 12 shows the case where the tilt angle of the rotary head drum device 2 is larger than the lead angle. Similarly, FIG. 13 shows the case where the inclination angle is equal to the lead angle, and FIG. 14 shows the case where the inclination angle is smaller than the lead angle. In this way, when the inclination angle of the rotary head drum device 2 is different from the lead angle, in order for the magnetic tape 6 to follow the lead, the auxiliary guide 48 is already closed when it starts winding around the rotary head drum 2.
．． An appropriate amount of tape 6 is wound around 49 to control its posture. Furthermore, if the inclination angle is equal to the lead angle, there is no need to control the tape posture when it comes into contact with the rotary head drum device 2, but as the wrapping angle around the rotary head drum device 2 increases, the lead also The tape posture is controlled by auxiliary guides 48 and 49 in order to make the tape follow the tape.

〔Effect of the invention〕

As described above, according to the present invention, vertical movement of the tape is suppressed by providing an auxiliary guide that controls the tape posture when the tape is wound around the rotating head drum during tape loading in a cassette type magnetic recording/reproducing device. Moreover, the tape can be wound while following the lead on the rotary head drum, which has the effect of reliably preventing damage to the tape and the rotary head.

[Brief explanation of the drawing]

t71E1°, FIG. 2, and FIG. 3 are plan views showing the overall structure of one embodiment of the present invention, FIGS. 4 and 5 are plan views showing the loading mechanism configuration, and FIGS. 6 and 7 are plan views showing the structure of the loading mechanism. A perspective view of the base, FIGS. 8 and 9 are plan views showing the operation of the supply side correction guide, FIGS. 10 and 11 are plan views showing the operation of the winding side correction guide, and FIGS. 13
This figure and FIG. 14 are developed views showing the state when the tape is wound around the rotary head drum. 2... Rotating head drum device 3... Tape cassette 6... Magnetic tape... Supply side drawer guide... Winding side drawer guide... Supply side tape guide... Winding side tape guide ... Supply side inclined tape guide ... Winding side inclined tape guide 21 ... Moving base ... Guide plate ... Supply side auxiliary guide ... Winding side auxiliary guide. ' Figure 3, Figure 2, 711,;'5 Ura n Book JP14 Diagram 8 Figure 9! +3 figure M figure 14

Claims (1)

[Claims] 1. A rotating head drum (2) equipped with a magnetic head;
A tape cassette (3) containing a magnetic tape (6) wound between two reels, and a guide groove (2) penetrating from the top surface.
4, 25), and is movably arranged along a guide plate (23) arranged around the rotary head drum (2) and a guide groove (24, 25) of the guide plate (23). a moving base (19, 21), a vertical tape guide (12, 13) having flanges at the upper and lower ends, which is erected on the upper surface of the moving base (19, 21).
In a tape loading device for a magnetic recording and reproducing device, which is equipped with a tape guide (14, 15) and an inclined tape guide (14, 15), the tape is movably provided on the tape loading path, and moves while winding the tape (6) in contact with it during the tape loading operation. An auxiliary guide (48
, 49).