JPH0355149Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tape loading mechanism in a magnetic recording/reproducing device.

[Prior Art] Currently, in magnetic recording and reproducing devices such as digital audio decks and video decks, a helical scan method is adopted for recording and reproducing audio signals and video signals. As a magnetic tape loading mechanism using this method, those shown in FIGS. 3 and 4 are known.

This will be explained in the figure.

1 is a cassette half containing a magnetic tape 2, 3 is a supply reel, and 4 is a take-up reel.

5 is a rotating head; 6 is a rotating ring for loading that rotates around the rotating head 5; first, second, third, and fourth guide posts 7, 8, 9, and 10 are provided at predetermined positions; ing.

Further, one or more fifth and sixth guide posts 1 are provided near the supply side and take-up side of the rotary head 5.
1 and 12 are fixed to a chassis (not shown).

When loading is started from the state shown in FIG. 3, the rotating ring 6 rotates counterclockwise, and the first, second, third, and fourth guide posts 7, 8, 9, moves counterclockwise while pulling out the magnetic tape 2 and winds the magnetic tape 2 around the rotary head 5 via the sixth guide post 12, and at the same time, the tension pin 13 moves clockwise to pull out the magnetic tape 2. is wound around the rotary head 5 via the fifth guide post 11, and tape loading is completed at the position shown in FIG.

[Problem to be solved by the invention] The conventional technology is that the fifth and sixth guide posts 1
Both 1 and 12 are magnetic tape 2 of cassette half 1.
First, second, third, and fourth guide posts 7, 8, which are located outside the exposed portion (opening);
Since the magnetic tape 2 is wound around the rotating head 5 by moving the magnetic tape 9 and 10 counterclockwise and moving the tension pin 13 clockwise at the same time, the tape loading mechanism can be made smaller. I couldn't.

[Means for Solving the Problems] The present invention includes a cassette half 1 containing a magnetic tape 2, a rotating head 5, and a first, second, Third guide post 15, 16,
17, and first and second inclined guide posts 18 and 19 fixedly provided near the supply side and take-up side of the rotary head 5, and the rotary ring In the tape loading mechanism, the magnetic tape 2 is wound around the rotary head 5 by rotating the magnetic tape 5 counterclockwise. In the tape loading mechanism, the second and third guide posts 16, 17 is located between the magnetic tape 2 and the opening 25 of the cassette half 1, and the first inclined guide post 18 is located between the magnetic tape 2 and the opening 25 of the cassette half 1. , the magnetic tape 2 is connected to the first guide post 15,
It is characterized in that it is wound around the rotary head 5 via the first inclined guide post 18 and also via the second guide post 16 and the second inclined guide post 19.

[Function] In the above configuration, the first inclined guide post 18 is positioned between the magnetic tape 2 and the opening 25 of the cassette half 1 before loading starts, so the tape loading mechanism can be miniaturized. can.

In the above configuration, the magnetic tape 2 is pulled out by moving the second and third guide posts 16 and 17 in the counterclockwise direction, and is wound around the rotary head 5 via the second inclined guide post 19. At the same time, the first guide post 15 moves counterclockwise and is positioned near the first inclined guide post 18, thereby moving the magnetic tape 2 between the first guide post 15 and the first inclined guide post. Since the tape is wound around the rotary head 5 via the post 18, tape loading becomes possible.

[Example] This will be explained with reference to FIGS. 1 and 2. In the figure,
Parts equivalent to those in the conventional example are given the same reference numerals, and their explanations will be omitted.

1 is a cassette half, 2 is a magnetic tape, 3 is a supply reel, 4 is a take-up reel, 5 is a rotating head, 1
3 is the tension pin, 20 is the capstan, 21
is a pinch roller, 22 and 23 are fourth and fifth guide posts, and 24 is a fixed head.

Reference numeral 14 denotes a loading rotary ring that rotates around the rotary head 5, with first, second, and
Third guide posts 15, 16, 17 are provided.

In the state where the magnetic tape 2 is stored and before loading starts (FIG. 1), the second of the first, second, and third guide posts 15, 16, 17,
The third guide posts 16, 17 are located between the magnetic tape 2 and the opening 25 of the cassette half 1.

Reference numerals 18 and 19 denote first and second inclined guide posts fixed to a chassis (not shown) near the supply side and take-up side of the rotary head 5, and the first inclined guide post 18 is located between the magnetic tape 2 and the opening 25 of the cassette half 1.

Note that the first and second inclined guide posts 18, 1
9 winding the magnetic tape 2 around the rotating head 5;
By regulating the running direction, the running of the magnetic tape 2 is made stable and smooth.

Next, the operation will be explained.

When loading is started from the state shown in FIG.
moves counterclockwise while pulling out the magnetic tape 2, winds the magnetic tape 2 around the rotary head 5 via the second inclined guide post 19, and at the same time, the first guide post 15 also moves counterclockwise. and comes close to the first inclined guide post 18. Further, the fourth guide post 22 also moves clockwise as in the conventional example, and the magnetic tape 2 is wound around the rotating head 5 via the first guide post 15 and the first inclined guide post 18. Complete loading at the position shown in Figure 2.

[Effects of the invention] According to the invention, the tape loading mechanism can be downsized and a compact magnetic recording/reproducing device can be provided.

[Brief explanation of drawings]

1 and 2 are diagrams showing the structure of the tape loading mechanism in the magnetic recording and reproducing apparatus of the present invention, and FIGS. 3 and 4 are diagrams showing the structure of the tape loading mechanism in the conventional magnetic recording and reproducing apparatus. It is. 1... Cassette half, 2... Magnetic tape, 3
... Supply reel, 4... Take-up reel, 5... Rotating head, 13... Tension pin, 14... Rotating ring, 15, 16, 17... First, second, third
guide posts, 18, 19...first and second inclined guide posts, 20...capstan, 21...
...Pinch roller, 22, 23... Fourth and fifth guide posts, 24... Fixed head, 25... Opening of cassette half.

Claims (1)

[Scope of utility model registration request] a cassette half 1 containing a magnetic tape 2;
A rotating head 5, a loading rotating ring 14 that rotates around the rotating head 5 and has first, second, and third guide posts 15, 16, and 17 at predetermined positions; It consists of first and second inclined guide posts 18 and 19 fixedly provided near the supply side and the winding side, and by rotating the rotation ring 14 in a counterclockwise direction, the magnetic tape can be rotated. In a magnetic recording and reproducing apparatus equipped with a tape loading mechanism in which a tape 2 is wound around a rotary head 5, the second and third guide posts 16, 17 and the first inclined guide post 18 are arranged in a state before loading starts. is the magnetic tape 2 and the opening 2 of the cassette half 1.
5, and in the loading state,
The magnetic tape 2 is wound around the rotary head 5 from the supply side via the first guide post 15 and the first inclined guide post 18, and the magnetic tape 2 wound around the rotary head 5 is passed to the second inclined guide post 19. , a tape loading mechanism characterized in that the tape is led out to the winding side via a second guide post 16 and a third guide post 17.