KR930007035B1 - Cassette moving device of magnetic record reproduce device - Google Patents

Abstract

The magnetic tape record and reproduction device comprises a housing with a cam hole (2), a guide long hole (3) and a slide way (4); sliders (5)(6) the center parts of which are geared to a shaft (11) of a driving motor (10); and feeding levers provided at both the sides of the sliders. The lower part of the feeding lever passed through the guide long hole is located at the front and back side of a cassette holder (9). The cam hole of the housing is provided at the intersection of the feeding levers by a shaft pin (13) so that the driving power of the motor is delivered to the slider, the feeding levers, and the cassette holder.

Description

Cassette feeder for magnetic tape recording and playback equipment

1 is a partially cutaway perspective view of the present invention

2 is a plan view of the present invention

Figure 3 (a) (b) (c) is a side view showing the operating state of the present invention

* Explanation of symbols for main parts of the drawings

1 housing 2 cam ball

3: guide officer 4: slideway

5, 6: slider 7, 8: feed lever

9: cassette holder 10: drive motor

11: rotating shaft 13: shaft pin

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette conveying apparatus of a recording and reproducing apparatus using a magnetic tape. In particular, a cassette conveying apparatus of a magnetic tape recording and reproducing apparatus for more reliable conveyance by preventing deviation movement of a cassette holder during conveyance of a cassette. It is about.

According to the structure of the transfer apparatus of the conventional magnetic tape recording and reproducing apparatus, a cassette holder is mounted inside the housing, a loading gear is installed outside the top cover, and a worm and a worm gear are engaged with each other on the coaxial outer shaft to drive the loading motor. As the loading gear is rotated to allow the transfer of the cassette holder, this is because the driving source for transferring the cassette holder is configured on one side of the top cover, that is, one side of the cassette holder, so that the deviation force acts. As a result, not only unstable transfer occurs due to the deviation movement of the cassette holder, but also there are many problems such as complicated structure.

Therefore, in view of the above-mentioned general drawbacks, the present invention is configured such that the conveying force for conveying the cassette holder is made at the upper center of the housing, so that the conveying force applied to the cassette holder is equally distributed to both the left and right sides. It is to provide a cassette transfer device of the magnetic tape recording and reproducing apparatus to maintain an excellent transfer function as described above in detail according to the accompanying drawings.

The center is screwed into the helical pivot shaft 11 of the drive motor 10 on the housing 1 in which the cam holes 2 and the guide holes 3 and the slide ways 4 are formed on both sides of the cam surface 2 at predetermined positions on both outer surfaces thereof. The sliders 5 and 6, which are restrained by coupling, are installed to have a predetermined interval, and the feed levers 7 and 8 passing through the guide hole 34 are intersected on both sides of the sliders 5 and 6, respectively. It is installed downward, but the lower ends of the transfer levers (7) and (8) on both sides of the cassette holder (9) before and after, respectively, while the center of mutual intersection of the transfer levers (7) (8) of the housing (1) The reference numerals 12 and 12 'are long holes and 13 are shaft pins.

According to the present invention configured as described above, as shown in FIG. 3A, first, a cassette (not shown) is inserted into the cassette holder 9, and then the driving motor 10 is driven. 10, the slider 5, 6 whose screw is centrally coupled to the spiral portion of the rotation shaft 11 is advanced as the rotation shaft 11, which has been elongated forwardly from the front, rotates, and the cassette holder 9 Is started, and at this time, the slider 6 does not form the spiral portion of the pivot shaft 11 as the slider 5 continues to move forward after the center connecting portion exits the spiral portion of the pivot shaft 11. The shaft pin 13 of the feed levers 7 and 8 is then caught by the horizontally moving end of the cam hole 2, so that the cassette holder 9 stops further horizontal movement. (See also (b) in Figure 3).

Then, as the drive motor 10 continues to drive, the slider 5 continuously moves forward, and the axial pins 13 at the intersection points of the feed levers 7 and 8 move in the longitudinal direction of the cam hole 2. As the slider 6 is moved downward, the slider 6 is slightly retracted and the slider 5 and 6 are narrowed so that the downward feed of the cassette holder 9 is performed, and then the driving motor 10 As the driving stops, the transfer operation of the cassette holder 9 is completed (see also (C) of FIG. 3).

On the other hand, when the case is to be taken out in the above state, when the rotating shaft 11 of the drive motor 10 is rotated in the reverse direction, the slider 5 starts the reverse movement along the spiral of the rotating shaft 11 and at the same time the slider 6 moves toward the drive motor 10, the gap between the slider 5 and the cassette holder 9 is raised.

When the cassette holder 9 is raised and the shaft pin 13 comes to the longitudinal end of the cam hole 2 (see FIG. 3 (b)), the continuous rotation of the drive motor 10 causes the cassette holder 9 to The height does not change and continues to move backwards.

On the other hand, the slider 6 also enters the spiral portion of the pivot shaft 11, and the cassette holder 9 is horizontally moved backwards without changing the distance between the sliders 5 and 6, and the sliders 5 and 6 are in this process. As the gap is increased, the shaft pin 13 of the transfer lever 7 and 8 rises along the vertical part in the cam hole 2 and is operated in the reverse order of the transfer operation described above. It is valuable to the position, the user can later easily eject the cassette from the cassette holder (9).

The present invention capable of smoothly transferring the cassette by the operation as described above, by simply configuring the drive source in the upper center of the housing to prevent the malfunction in accordance with the equal driving force on both sides of the cassette holder to prevent the cassette in advance It is a very useful invention to get excellent transfer function and increase reliability.

Claims (1)

The center is screwed into the helical pivot shaft 11 of the drive motor 10 on the housing 1 in which the cam holes 2 and the guide holes 3 and the slide ways 4 are formed on both sides of the cam surface 2 at predetermined positions on both outer surfaces thereof. Sliders (5) and (6) constrained by the coupling are provided at predetermined intervals, and on both sides of the sliders (5) and (6), the transfer levers (7) (8) passing through the guide hole (3) are installed downward to cross each other. In addition, the lower ends of the transfer levers (7) (8) are respectively installed on both sides of the cassette holder (9) before and after the sides, while the shaft (13) is provided at the mutually intersecting centers of the transfer levers (7) (8). A magnetic tape recording and reproducing apparatus, characterized in that the driving force of the driving motor 10 is configured to interlock a slider, a transfer lever, and a cassette holder in the cam hole 2 of 1).