KR0134732Y1 - Cassette tape reel case position guide device - Google Patents

Abstract

The present invention relates to a tape recorder, and more particularly, to a cassette tape rotation case guide device for guiding a rotation case to a home position when loading a cassette tape provided with a rotation case. Rotation case fixed position guide device according to the present invention is supported by the elastic member on the slider of the magnetic recording / reproducing apparatus is installed to be rotated at a predetermined angle, the reel hub on which the cassette tape reel hub and the reel hub seated in certain cases The reel base, which is formed at a predetermined distance apart from the reel base and the revolving case catching part which contacts the side of the installed rotating case and pushes the rotating case in one direction, is installed at a predetermined position of the upper chassis, It has a configuration including a projection for causing the reel base to rotate at an angle. The rotation case correct position guide device according to the present invention guides the cassette tape to the correct position so that the torque failure due to the poor contact of the reel hub does not occur.

Description

Position guide device of cassette tape rotation case

1 is a side view of the magnetic recording / reproducing apparatus described in the prior application specification.

2 is an explanatory diagram for explaining the structure of a cassette tape used in a magnetic recording / reproducing apparatus of a prior application.

Figure 3 is an explanatory view for explaining the rotational position guide device according to the present invention.

4 is a cross-sectional view when the cassette tape is mounted on the reel base.

FIG. 5 is a plan view showing a case in which a cassette tape is attached to the slider of FIG.

* Explanation of symbols for main parts of the drawings

10: eject lever 20: cassette tape

21: case 22: rotation case

23: hinge 24: first elastic member

25: reel hub 26: second elastic member

30: upper chassis 30d, 30e: protrusion

40: cassette holder 50: slider

51,52: reel base 51c, 52c: catch

53,54: Reel

The present invention relates to a tape recorder, and more particularly, to a cassette tape rotation case guide device for guiding a rotation case to a home position when loading a cassette tape provided with a rotation case.

In general, magnetic recording and reproducing apparatuses widely used for home use mostly 1 / 2-inch cassette tapes adopted by VHS (Video Home System). Such a magnetic recording and reproducing apparatus includes a cassette holder into which a cassette tape is inserted, driving members for attracting and seating the cassette holder into an apparatus body, and a magnetic tape in the cassette tape loaded onto a rotating drum installed on the main technology. Or a loading means for unloading and a traveling means for running the loaded magnetic tape.

In recent years, products such as portable camcorders developed using such a magnetic recording / reproducing apparatus have been trying to reduce the size and weight as much as possible in order to facilitate user convenience. As part of such efforts, a magnetic recording / reproducing apparatus invented by the inventors of the present invention has been filed in Korean Patent Application No. 93-5016 (hereinafter referred to as an earlier application). The magnetic recording / reproducing apparatus inserts a cassette tape into a cassette holder provided with a rotating drum so that the magnetic tape is first loaded, and then presses and closes the cassette holder so that the magnetic tape is secondaryly loaded onto the rotating drum to load the cassette tape. When the operation is completed, it is miniaturized and lightened by allowing the rotating drum to be completely received into the inner space of the cassette tape. This will be briefly described with reference to FIGS. 1 and 2.

FIG. 1 is a side view of the magnetic recording / reproducing apparatus described in the prior application specification. FIG. 1 (a) shows the state before the cassette tape is first loaded, and FIG. 1 (b) shows the state where the cassette tape is first loaded. It is shown.

In FIG. 1, the ends of the pair of arms 10a extending rearward of the eject lever 10 are connected to the ends of the pair of brackets 11 formed inside the main body of the device (not shown) by the shaft 11a. It is provided so that it can open and close up and down centering on (11a). The eject lever 10 inserts or ejects the cassette tape 20 into the device body by exposing the locking tape 10b formed at the front of the eject lever 10 to the outside of the device body at a predetermined angle while the eject lever 10 is released. It is supposed to be possible. In addition, a pair of elastic members 12 are attached to the inner shaft surface of the eject lever 10 in a downward direction, and the cassette tape (with the pressing operation of the eject lever 10 completed by the elastic members 12) is completed. By pressing the upper surface of 20) it is possible to prevent the cassette tape 20 from flowing. A pin 10c is formed at one side of the arm 10a of the eject lever 10, and the pin 10c is fitted to the long hole 30b of the bracket 30a formed on the side of the upper chassis 30. Therefore, the upper chassis 30 can move up and down in the vertical direction when the eject lever 10 rotates up and down. The ejector lever 10 has a cassette holder 40 into which a cassette tape 20 is inserted, a slider 50 for moving the cassette holder 40 back and forth in the horizontal direction, and the slider 50. The upper chassis 30 equipped with the rotating drum 31 is provided so that the magnetic tape in the cassette tape 20 is first loaded at the time of horizontal movement. One end of the cassette holder 40 is connected to the end of the slider 50 and the shaft 40a, and a long hole having a first link 41 formed in the center portion of the cassette 50 is formed on the bracket 50a of the side of the slider 50 ( It is connected to the second link 42 and the pin 43 which slides in 50b) and moves to a slider. Accordingly, the cassette holder 40 can be rotated by a predetermined angle about the shaft 40a, so that the cassette tape 20 can be inserted and taken out. One side of the cassette holder 40 is provided with a lead open member 44 which rotates up and down about the shaft 44a on one side, and a long hole (in the center of the lead open member 44). 44b) is formed and the pin 40b protruding from the side of the cassette holder 40 is fitted and guided. In addition, the center portion of the lead-open member 44 and the slider 50 are connected by a third link 45 which is inclined at a predetermined angle, and the second link 42 and the third link 45 are elastic members 46. Connected by Accordingly, in the process of mounting the cassette holder 40 on the slider 50, the lead open member 44 is rotated about the shaft 44a to open the lid of the cassette tape 20.

On the other hand, the sliders 50 are equipped with rail bases 51 and 52, and rails 53 and 54 are mounted on the rail bases 51 and 52 to guide the hub (not shown) of the cassette tape 20. It becomes possible, and can be moved back and forth in the horizontal direction by a slider moving mechanism (not shown) provided in the upper chassis 30. In addition, a lower chassis 60 is provided on the lower side of the upper chassis 30 to which the driving factors for driving the magnetic tape (not shown) in the cassette tape 20 are mounted. Sides of the upper chassis 30 and the lower chassis 60 have pins 60c at the ends thereof so that a pair of fourth link 60a and fifth link 60b intersect each other by applying Scott Russell's link mechanism principle. The elastic member 61 is mounted on each of the links 60a and 60b so that the upper chassis 30 can move up and down elastically in the vertical direction.

The cassette tape 40 is inserted into the cassette holder 40 located inside the eject lever 10 exposed at a predetermined angle with respect to the main body in the magnetic recording / reproducing apparatus of the prior application configured as described above. When pressed and closed, the cassette holder 40 is rotated about the shaft 40a and compressed to the slider 50. At this time, the hub of the cassette tape 20 is guided and seated on the reel 53 installed on the slider 50 and the lead-open member 44 formed on the side of the cassette holder 40 is centered on the shaft 44a. The lid 20a of the cassette tape 20 is opened by rotating clockwise. When the cassette holder 40 is pushed to the upper chassis 30 in this state, the slider moving mechanism (not shown) mounted on the upper chassis 30 rotates by moving the slider 50 to the upper chassis 30 horizontally. The loading operation of the magnetic tape on the drum 31 can be performed.

Thus, when the primary loading of the magnetic tape by the slider 50 is completed, it will be in the state like FIG. 1 (b). At this time, when the user presses the eject lever 10 and closes it, the eject lever 10 moves downward about the shaft 11a and presses the long hole 30b of the upper chassis 30 into which the pin 10c is fitted. The chassis 30 is elastically vertically moved downward by the elastic members 61 installed in the fourth and fifth links 60a and 60b to be seated on the lower chassis 60.

FIG. 2 is an explanatory view for explaining the structure of the cassette tape used in the magnetic recording / reproducing apparatus of the first application, and the overall shape and a cross-sectional view of the rotation case are shown in FIGS. 2 (a) and 2 (b), respectively. As shown in FIG. 2, the cassette tape 20 is provided with the case 21. As shown in FIG. The case 21 protects and supports the tape and the internal parts. The lower case 21 is shown in Figure 2, the upper case is coupled to this. As shown in FIG. 2, the case 21 is provided with a pair of rotating cases 22 facing each other.

The rotation case 22 can be rotated by a predetermined angle about the hinge 23. In the vicinity of the hinge 23 of the rotation case 22, a first elastic member 24 for connecting the case 21 and the rotation case 23 is provided. The first elastic member 24 is intended to allow the rotation case 22 to be restored to its original position when other external force is removed. A reel hub 25 around which a magnetic tape is wound is provided in the rotation case 22 as shown in FIG. 3 (b). That is, the circular reel hub mounting hole 22b is formed in the bottom plate 22a of the rotation case 22, and the reel hub 25 is provided so that rotation in place is possible. Here, the reel hub installation hole 22b is formed larger than the reel hub 25 of the part inserted here. This is to allow the reel hub 25 to rotate smoothly. Such a reel hub 25 is urged downward by the second elastic member 26 provided on the upper plate 22c of the rotation case 22. In other words, when the reel hub 25 is not subjected to any external force, the bottom plate 22a of the rotation case 22 is formed by the part contacting the second elastic member 22d and the force of the second elastic member 22d. It is not subject to any restraint except the part in contact with.

Such a cassette tape is loaded by inserting a reel hub of a cassette tape into a reel installed on a reel base of the first degree slider. In the related art, the reel base and the rotation case were separately guided.

That is, when the cassette tape is loaded, a pair of protrusions for guiding the reel base installed on the slider of FIG. 1 and the pivoting case of the cassette tape described in FIG. Caught In such a pre-applied magnetic recording / reproducing apparatus, since the rotating case catching piece for guiding the rotating case to the correct position when loading the cassette tape is installed separately in the upper chassis, it guides accurately only in the last half-loading section. There was a disadvantage that a lot occurs. As a result, the reel hub is moved eccentrically, which increases the possibility of poor contact with the rotation case. When such a bad contact occurs, the torque of the reel is uneven, and the tape tension is poor, which causes a fatal damage to the recording / reproducing of the video signal.

An object of the present invention is to provide a rotation case fixed position guide device for guiding the position of the cassette tape accurately.

An object of the present invention is a slider for receiving a reel hub on which a magnetic tape is wound and a cassette tape having a reel hub which is elastically supported and provided with a revolving case installed at a predetermined angle so as to move to a loading position. In the magnetic recording / reproducing apparatus having an upper chassis for guiding the movement of the slider, the slider is installed so as to be rotated at a predetermined angle by the support of the elastic member, and if the reel hub is fixed to the reel, A reel base which is formed to be spaced apart from the reel base by a predetermined distance from the reel base which is in contact with the side of the revolving case provided with the reel hub and pushes the revolving case in one direction, and is installed at a predetermined position of the upper chassis. When the slider is moved, the reel base in contact with the reel base rotates at an angle. It is achieved by pivoting the guide device of the cassette tape case comprising: a projection that by.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

3 is an explanatory view for explaining the rotational position guide device according to the present invention, the plan view of the slider and the upper chassis in which the device of the present invention is installed, and the cross-sectional shape of the reel base installed in the slider is shown in Figure 3 (a) to Each of them is shown in FIG. 3 (d). As shown in FIG. 3, the slider 50 is equipped with a pair of reel bases 51 and 52 as shown in FIGS. 3 (c) and 3 (d) on both sides of the central portion. Balls and supply reels 53 and 54 are provided on the bases 51 and 52, respectively, to guide the hub of the cassette tape 20. As shown in FIG. 3 (c) and FIG. 3 (d), the reel bases 51 and 52 according to the present invention form the vertical locking portions 51c and 52c having the end portions bent. It holds the side of the rotating case of the cassette tape described in That is, the engaging portions 51c and 52c of the reel base allow the center of rotation of the reels 53 and 54 provided on the reel bases 51 and 52 and the side of the rotation case to always maintain a certain distance. 4 will be described in more detail.

The slider 50 is movable back and forth in the horizontal direction by the slider moving mechanism provided in the upper chassis 30. Here, the reel bases 51 and 52 are connected to the slider 50 by shafts 51a and 52a, respectively, and the respective pinholes 51b and 52b formed on the other side of the shafts 51a and 52a are formed on the slider. The reel bases 51 and 52 are fitted to 51c and 52d so that the reel base 51 and 52 can be elastically rotated by the elastic member 55 within the range of the long holes 51c and 52d about the shafts 51a and 52a. The slider moving mechanism includes a first lever 32 mounted on one side of the upper chassis 30 so as to be rotated about the shaft 32a, and is mounted at an approximately center portion of the first lever 32 to the center of the shaft 33a. The second lever 33 rotates.

In the long hole 32b formed at the end of the first lever 32, a pin 50e press-fitted to the lower side of the slider 50 is fitted, and in the long hole 33b formed in the second lever 33. It is fitted to the pin 30c press-fitted to the lower side of the upper chassis 30, the end of the second lever 33 and the upper chassis 30 are connected by the elastic member 34, the first lever 32 ) And the second lever 33 is elastically operated. In addition, the upper chassis 30 is equipped with a rotating drum 31 at the center thereof so that the magnetic tape 21 of the cassette tape 20 is first loaded when the slider 50 is moved. A pair of engaging pieces 30d and 30e protrude from both sides of the inner side of 30 so that the reel bases 51 and 52 provided on the slider 50 are caught at a predetermined position, thereby resilient about the shafts 51a and 52a. The member 55 can be rotated elastically. And the rail 56 is formed in the lower surface of the slider 50, and the pin 50 formed on the upper chassis 30 can guide the slider 50 correctly.

4 is a cross-sectional view when the cassette tape is mounted on the reel base, and the cross-sectional shapes of the reel base on the supply side and the supply side are shown in FIGS. 4 (a) and 4 (b), respectively. As shown in FIG. 4, the reel bases 51 and 52 are provided with balls and supply reels 53 and 54, and have locking portions 51c and 52c vertically bent at ends. Rotating cases 22a and 22b of cassette tapes are mounted on the reel bases 51 and 52. Reel hubs 25a and 25b are seated on reels 53 and 54 provided on the reel bases 51 and 52. It is in a state. In such a state, the engaging portions 51c and 52c of the reel bases 51 and 52 are in contact with the side surfaces of the rotation cases 22a and 22b to hold the rotation cases 22a and 22b at a predetermined position. That is, the locking portions 51c and 52c of the reel bases 51 and 52 hold the pivoting cases 22a and 22b at a constant distance from the center of the reels 53 and 54 so that they rotate with the reel hubs 25a and 25b. Unnecessary contact does not occur between the cases 22a and 22b. In this state, the reel hubs 25a and 25b are in contact only with the resilient members 26a and 26b provided on the upper surfaces of the reels 53 and 54 and the rotation cases 22a and 22b, but not in other parts. That is, in the magnetic recording / reproducing apparatus equipped with the rotation case correct position guide device according to the present invention, the torque failure due to the poor contact of the reel hub is not generated.

FIG. 5 is a plan view showing the case where the cassette tape is mounted on the slider of FIG. 3, and shows an initial state in which the cassette tape is mounted and a state in which the slider is half-loaded by moving the upper chassis. Are shown in FIG. As shown in FIG. 5 (a), when the cassette tape 20 is mounted on the slider 50, the reel hubs 25a and 25b are seated on reels 53 and 54 provided on the reel base, The locking portions 51c and 52c contact the rotation cases 22a and 22b at a predetermined distance from the center of the reels 53 and 54 to hold the rotation cases 22a and 22b. Of course, the rotation cases 22a and 22b are in a state of being urged in one direction by the elastic members 24a and 24b. When the force is applied to the slider 50 in such a state, the slider 50 is advanced, and the reel base is caught by the pair of protrusions 30d and 30e provided in the upper chassis 30 at a predetermined position. Accordingly, the engaging portions 51c and 52c of the reel base push the side surfaces of the rotation cases 22a and 22b to rotate the rotation cases 22a and 22b inward. That is, the head drum 31 enters the inside of the cassette tape 20 so as to be half loaded as shown in FIG. 5 (b).

In such a state, even when the upper chassis is seated in the low one chassis by pressing the eject lever described in FIG. 1, the engaging portions 51c supporting the reels supporting the reel hubs 25a and 25b and the rotation cases 22a and 22b are provided. 52c) is provided integrally with the reel base, the relative positions of the reel hubs 25a, 25b and the rotation cases 22a, 22b are always kept constant.

As described above with reference to FIGS. 3 to 5, in the magnetic recording / reproducing apparatus in which the rotation case correct position guide device according to the present invention is adopted, the torque failure of the reel due to the position failure of the rotation case does not occur.

Claims (2)

Slider for moving to the loading position by mounting a cassette tape having a reel hub on which a magnetic tape is wound and a reel hub that is resiliently supported and resiliently installed to be able to rotate at a predetermined angle, thereby guiding movement of the slider. A magnetic recording / reproducing apparatus having an upper chassis, the rotating case being supported by an elastic member so as to be rotated at a predetermined angle, and having a reel on which the reel hub is seated and, in certain cases, the reel hub on which the seated reel hub is installed. A reel base which is formed to be spaced apart from the reel by a rotation case engaging portion for contacting a side of the rotation case to push the rotation case in one direction; And a protrusion installed at a predetermined position of the upper chassis and contacting the reel base to move the reel base at a predetermined angle when the slider is moved. The apparatus of claim 1, wherein the engaging portion of the reel base is formed vertically upwardly from the reel base, and the end portion thereof is opened outward.