JPH0453020B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a tape mounting device in a magnetic recording/reproducing device, and in particular, it is possible to simplify the configuration and ensure reliable operation, and to make the magnetic recording/reproducing device compact and lightweight. This invention relates to a tape mounting device that is effective for [Background of the Invention] In a conventional VTR tape mounting device, the tape is pulled out from inside the tape cassette using a tape guide for guiding the tape or a plurality of members supporting pinch rollers, etc., and held at a predetermined angle with respect to the cylinder. As described in Japanese Unexamined Patent Publication No. 57-20957, a method of mounting the tape by winding it over the tape is described in Japanese Patent Application Laid-Open No. 57-20957. There is a method in which a plurality of supporting members share a guide route up to a branch point in the middle of the guide route, and then branch out and move on each separate guide route until they reach a predetermined position and tape loading is completed. It had been taken.
In this case, regarding the method of guiding each tape guide support member at the branch point, a method has been proposed in which a biasing force in a certain direction is always applied to the support member and the tape guide support member is guided to a predetermined guide path. However, although the above-mentioned method of guiding each support member is a reliable and effective means of guiding the tape guide, in order to apply a biasing force,
The number of parts increases due to the need to use biasing members such as springs, and there are problems in that it is difficult to adjust the biasing force of the biasing member, and further miniaturization and thinning of the device have been promoted. In this case, there is a problem that space for providing the biasing member cannot be secured. [Object of the Invention] An object of the present invention is to eliminate the above-mentioned problems of the prior art and to perform the branching operation at the branching point of the tape guide member with a simple mechanism, so that the operation is reliable and stable, and magnetic recording and reproducing is possible. An object of the present invention is to provide a tape mounting device that allows the device to be made smaller and thinner. [Summary of the Invention] In order to achieve this object, the present invention includes: (a) a tape guide member that is moved from a first position to a second position by a guide path and winds a magnetic tape around a cylinder; In a tape mounting device of a magnetic recording and reproducing device, (b) the tape guide member has first and second tape guide members (corresponding embodiment codes 11 and 16) that move independently of each other; c) The above-mentioned guide route is arranged so that one route (corresponding example code 51) passes through a plurality of branching members (corresponding example example code 40) on the way from the first position to the second position. (d) The first and second tape guide members are configured to branch into paths (corresponding embodiment codes 52 and 53); is configured such that the route is guided separately to each of the plurality of selected routes. [Embodiments of the Invention] Examples of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a state in which a tape is loaded in an embodiment of the tape loading device according to the present invention, in which 1 is a main chassis, 2 is a rotary cylinder equipped with a magnetic head, 3 is a cassette, and 4 is a rotary cylinder. tape,
5 is a supply side reel, 6 is a take-up side reel, 7 is a tension pin that detects the tension when the tape 1 is running, 8 is a fixed guide installed on the main chassis, 9 is a first inclined guide on the entrance side, and 10 is the input side reel. a first side guide roller; 11 is a first entrance-side wing serving as a first tape guide member for setting up the first entrance-side inclined guide 9 and the first entrance-side guide roller 10 in a predetermined positional relationship; 12 is an erasing head; , 13 is an impedance roller for absorbing longitudinal vibration of the tape 4, 14 is a second inclination guide on the entrance side, 15 is a second guide roller on the entrance side, and 16 is the second inclination guide 14 on the entrance side and the second guide roller on the entrance side. 17 is an exit side guide roller, 18 is an exit side jaw for setting the exit side guide roller, 19 is a capstan, and 20 is a A pinch roller 21 is a width regulating guide that regulates the position of the tape 4 entering the cassette 3. In the same figure, each tape guide before the start of tape mounting is shown by a broken line, and is in the position shown by adding upper and lower bars to the reference numeral. Next, the tape loading operation will be explained. Before starting tape loading, open the cassette opening 22.
With the start of operation of the tape mount, the first entrance-side flap 11 and the second entrance-side flap 16, which were located at , move as shown by the two-dot chain line so as to pull out the tape 4. At this time, the first entrance flap 11 and the second entrance flap 16 simultaneously move along the same route, and the branch point 2
Move up to 5 without changing the height as shown by arrow A. At the branching point 25, the second entrance-side flap 16 moves along a path approaching the rotating cylinder 2 as shown by arrow B, gradually increasing its height until it reaches a predetermined position, and the tape 4 is moved toward the rotating cylinder 2. Mount it on 2. At this time, impedance roller 13, which was at position 13 in the middle of tape mounting, moves as indicated by arrow G. Further, at the same time as the above-mentioned operation of the second entrance-side flap 16, the first entrance-side flap 11 changes its height along the path in the direction away from the rotary cylinder 2, as shown by arrow C at the branch point 25. The tape moves smoothly and reaches a predetermined position when the tape loading is completed, forming a running path on the tape input side of the rotary cylinder 2. On the other hand, the exit side flap 18 as the tape guide member on the exit side includes the entrance side first flap 11 and the entrance side second flap 16.
The pinch roller 20 and the width regulation guide 21 move in parallel with the movement of arrows E,
As it moves as shown in F, a tape running path is formed on the tape output side of the rotary cylinder 2, and the tape mounting is completed. FIG. 2 is a plan view showing a state in which the tape is being loaded, and the same members as those in FIG. loading ring, 31
32 is a drive gear that drives the loading ring 30; 33 is a first connecting member that connects the second entrance-side jaw 16 and the loading ring 30; , 34 is a second connecting member that connects the first entry-side jaw 11 and the loading ring 30, and 35 is the first connecting member.
A rotation pin that connects the connecting member 33 and the second entrance-side flap 16; 36 a drive pin that connects the first connecting member 33 and the loading ring 30; and 37 a link that connects the second connecting member 34 and the first entrance-side flap 11. rotating pin,
38 is the second connecting member 34 and the loading ring 3
0, 40 is a branching point protrusion as a branching member, 50 is a guide plate, 50a is a main guide of each jaw, 50b is a branch guide for the first entrance flap 11, 50c is a sub guide, Reference numeral 51 denotes a first guide groove as a guide path for guiding the movement of the first entrance-side flap 11 and the second entrance-side flap 16 during tape mounting, and 52 extends the first guide groove 51 to a predetermined position. A second guide groove 53 serves as one of a plurality of paths for guiding the second entrance-side flange 16, and a second guide groove 53 serves as a branch point between the first guide groove 51 and the second guide groove 52 to guide the entrance-side first flange 16. 11 to a predetermined position. In the tape loading operation, the drive gear 32 is rotated in the direction of the arrow by a drive source (not shown), and the loading ring 30 is rotated in the direction of the arrow L. The second entrance-side flap 16 is driven to the loading ring 30 via the first connecting member 33, and the first entrance-side flap 11 is driven to the loading ring 30 via the second connecting member 34. At this time, the second entrance flap 16 and the first entrance flap 11 slide along the first guide groove 51 formed by the main guide 50a and the branch guide 50b. At the branch point 25, the side wall portion 16a at the tip (opposite side to the rotating cylinder 2) comes into contact with the side wall 40a of the branch point convex portion 40 on the rotating cylinder 2 side, and the side wall portion of the tip portion of the second entrance side flap 16 contacts the side wall 40a of the branch point convex portion 40 on the rotating cylinder 2 side. 16a and branching point protrusion 40
The side wall 40a of the main guide 50a and the sub-guide 50c slide, and the second entrance-side flap 16 moves in the direction of the arrow M, as shown by the broken line 16 , along the second guide groove 52 formed by the main guide 50a and the sub-guide 50c. do. As described above, in response to the movement of the second entrance flap 16, the first entrance flap 11 moves in the direction away from the rotating cylinder 2 at the branch point 25. That is, as shown in FIG. 3, the second entry-side flap 11 that has moved along the first guide groove 51 as the loading ring 30 rotates, at the branching point 25, touches the rotary cylinder 2 at the tip. Side wall part 1 on the side closer to
1a comes into contact with the side wall portion 40a of the branch point convex portion 40 on the side opposite to the rotating cylinder 2, and as shown by the broken line 11 in the direction of the arrow, a third guide groove is formed by the branch guide 50b and the sub-guide 50c. 53
move along. Next, the principle of selecting the movement route of each arm at the above-mentioned branch point 25 will be explained. FIGS. 4a and 4b are schematic plan views of the principle. In other words, as shown in FIG.
As shown in the figure, if the tip end portion 11b of the first flap 11 is positioned offset from the tip portion 40c of the branching point protrusion portion 40 by l ₁ in the traveling direction, the entrance side first flap 11 moves in the direction of the arrow and along the third guide groove 53. Further, as shown in FIG. 4b, the tip 16a of the second entrance-side flap 16 is positioned to be offset by l ₂ to the right in the direction of travel with respect to the tip 40c of the branch point convex portion 40. if,
The second entrance-side flap 16 moves in the direction of arrow M, and the second
It will move along the guide groove 52 of. The deviation amounts l ₁ and l ₂ are determined by the guide grooves 51,
If the wobbling is larger than that for 52 and 53, the route selection function at the above-mentioned branch point 25 can be sufficiently performed. In the embodiments described above, the branching point convex part 40 as a branching member is shown as a fixed triangular prism-shaped member, but it may also be cylindrical. A similar effect can be obtained if the deviation amounts l ₁ and l ₂ shown in b can be secured. Furthermore, in this embodiment, the mounting method in which each tape guide member moves upward only on the entry side of the rotary cylinder 2 was explained as an example, but each tape guide member moves in parallel on both the entry and exit sides. The present invention can also be applied to other mounting methods such as mounting. [Effects of the Invention] As explained above, according to the present invention, there is no need to use a biasing member such as a spring material for biasing in the guiding direction, unlike the conventional guiding method for tape guides. In addition to reducing the number of parts,
Since there is no need to provide a protrusion or a groove dedicated to guiding the support member of the tape guide, the width of the support member of the tape guide can be reduced, and the flat area of the chassis of the device can be reduced. Furthermore, the guide member that guides the tape guide member can be simplified and made thinner. Furthermore, since the guiding mechanism of the tape guide can be operated reliably and smoothly, highly reliable tape loading can be performed. can be provided.

[Brief explanation of the drawing]

The drawings show an embodiment of a tape mounting device for a magnetic recording/reproducing apparatus according to the present invention, in which FIG. 1 is a plan view of the tape mounting device of the same embodiment, and FIG. 2 is a plan view of the tape mounting device of the same embodiment. FIG. 3 is a plan view of the same embodiment, and FIGS. 4a and 4b are schematic plan views illustrating the principle of the present invention. 2...Rotating cylinder, 3...Cassette, 4...
Tape, 9...First inclined guide on the entrance side, 10...First guide roller on the entrance side, 11...First fan on the entrance side, 1
1a... Tip side wall, 11b... Tip, 14...
... Entrance side second inclined guide, 15... Entrance side second guide roller, 16... Entrance side second wing, 16a... Tip side wall, 16b... Tip, 22... Opening, 2
5... Branching point, 30... Loading ring, 3
3...First connection member, 34...Second connection member, 3
5, 37... Rotating pin, 36, 38... Drive pin, 40... Branching point protrusion, 50... Guide plate,
51...first guide groove, 52...second guide groove,
53...Third guide groove.

Claims (1)

[Scope of Claims] 1. A tape mounting device for a magnetic recording and reproducing apparatus having a tape guide member that is moved from a first position to a second position by a guide path and winds a magnetic tape around a cylinder, comprising: The guide member has first and second tape guide members that move independently of each other, and the guide path includes a branching member on the way from the first position to the second position. The first and second tape guide members are configured to branch into a plurality of routes sandwiched between them, and the first and second tape guide members are connected to each of the plurality of routes whose entry direction to each of the plurality of routes is selected by the branching member. A tape loading device for a magnetic recording and reproducing device, characterized in that the tape mounting device is guided separately from the tape mounting device. 2 The tape guide member is connected to the first and second tape guide members.
2. A tape loading device for a magnetic recording/reproducing apparatus according to claim 1, wherein said tape guide member is guided at its tip portion to a separate path by said branching member.