JPH0214456A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To approach the loading locus of a post holder closer to that of a rotary cylinder and to make the device small in size by providing a regulating late opposite to a loading guide and at a position where the post holder passes inbetween over a prescribed section. CONSTITUTION:A rotary cylinder 21 provided with magnetic heads 22a-22d, posts 23, 24 extracting a magnetic tape from a cassette having reel with the magnetic tape wound thereupon toward the outside of the cassette and winding the tape onto the rotary cylinder 21 by a prescribed angle, a post holder 25 holding the post and a loading guide 28 guiding the post holder are provided and a regulating plate 30 is provided to a position opposite to the loading guide 28 and where the post holder 25 passes inbetween over a prescribed section. Thus, a play of the post holder is reduced and a gap margin between the tape guide post and the rotary cylinder is ensured, the loading locus of the post holder is approached to that of the rotary cylinder and the size of the magnetic recording and reproducing device is made small.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention involves winding and running a magnetic tape around a rotating cylinder to which a magnetic head is attached, and slidingly contacting the magnetic head and the magnetic tape to obtain predetermined information such as a video signal. The present invention relates to a magnetic recording and reproducing device such as a video recorder that records and reproduces signals.

2. Description of the Related Art In recent years, magnetic recording and reproducing devices such as cassette video tape recorders have been becoming smaller.

An example of a conventional magnetic recording/reproducing device will be described below with reference to the drawings.

FIG. 4 shows a plan view of a conventional magnetic recording/reproducing device. In FIG. 4, 1 is a cassette containing a reel wound with magnetic tape, and 2 is a rotating cylinder in which magnetic heads 3a to 3d are arranged on the circumference. Reference numerals 4 to 9 designate movable tape guide posts, which are placed inside the cassette opening when a cassette is loaded (indicated by a broken line).If a cassette detection switch (not shown) detects that the cassette is loaded, the tape guide posts 4 to 9 move as shown by the arrows. The tape is loaded along the route shown and fixed at a predetermined position. Reference numerals 10 to 11 are fixed tape guide posts, which are fixed on the board 12. Reference numeral 13 is a cab for running the magnetic tape 14 at a predetermined speed. The magnetic tape is compressed to the gear stun 13 by a pinch roller 15, thereby transmitting the rotational force of the gear stun 13 to the magnetic tape 14 and pulling the magnetic tape 14 at a predetermined speed.

FIG. 5 is a detailed plan view of the tape shown in FIG. 4 during loading, and FIGS. 6a and 6b are front views thereof (partially shown in cross section).

In FIGS. 5 and 6a, 16 is a post holder for holding the tape guide posts 7 and 8, and 17 is a bottle provided on the post holder 16. A driving force is transmitted to the post holder 16 by the iron 18, and the magnetic tape 14 is wound around the rotary cylinder 2 at a predetermined angle along a guide groove 20 provided in a loading guide 19 fixed to the substrate 12.

Problems to be Solved by the Invention However, with the above configuration, as magnetic recording and reproducing devices become smaller, the gap between the tape guide post, which pulls out the magnetic tape from the cassette and winds it around the rotary cylinder, and the rotary cylinder becomes smaller. However, due to the clearance between the post holder that holds the tape guide post and the loading guide that guides the post holder, there is a problem that the tape guide post and the rotating cylinder come into contact during the girloading operation due to the post holder wobbling. (See Figure 6).

In view of the above problems, the present invention prevents rattling between the post holder and the loading guide by providing a regulating plate at a position facing the loading guide and through which the post holder passes over a predetermined section. By securing a gap between the tape guide post and the rotating cylinder so that they do not come into contact with each other during the loading operation, and by bringing the loading locus of the post holder closer to the rotating cylinder, a much smaller magnetic recording/reproducing device is provided. It is something.

Means for Solving the Problems In order to solve the above-mentioned problems, the magnetic recording and reproducing apparatus of the present invention includes a rotating cylinder equipped with a magnetic head, a rotating cylinder having a magnetic head wound thereon, and a cassette containing one or more magnetic tapes. a post that is pulled out of the cassette and wrapped around the rotating cylinder at a predetermined angle; a post holder that holds the post; a loading guide that guides the post holder; It has a configuration in which a regulating plate is provided at a position where the vehicle passes over a predetermined section.

Effect of the Invention With the above-described configuration, the present invention provides a system in which wobbling of the post holder is reduced by allowing the post holder to pass between the loading guide and the regulating plate located at a position facing the loading guide over a predetermined section during loading. , the gap between the tape guide post and the rotating cylinder can be secured.
This allows the loading locus of the post holder to be brought closer to the rotating cylinder, making it possible to downsize the magnetic recording and reproducing device.

Embodiments Hereinafter, magnetic recording and reproducing apparatuses according to embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of a first embodiment of the present invention (during loading), and FIG. 2 is a front view (partially shown in cross section). 1 and 2, 21 is a rotating cylinder, and 22a to 22d are magnetic heads arranged on the circumference of the rotating cylinder 210. In FIG. 23 and 24 are tape guide posts, 25 are post holders that hold the tape guide posts 23 and 24, 26 are bins installed in the post holder 26, 27 are ronds that engage with the bins 26, and 28
3 is a loading guide having a guide groove 29 for guiding the post holder 25; 30 is a regulating plate fixed to a base plate 31 with screws 32a and 32b at a position opposite to the loading guide 28; 33 is a camo 2 (not shown); It is a magnetic tape that has been pulled out.

The operation of the magnetic recording/reproducing apparatus constructed as above will be explained below with reference to FIGS. 1 and 2.

First, FIG. 1 shows a plan view during loading, and FIG. 2 shows a front view (partially shown in cross section). rod 2
7, the post holder 25 receives the driving force from the scissor 26
However, the magnetic tape 33 is inserted into the cassette (
(not shown), and is guided by the guide groove 29 of the loading guide 28 and wound onto a predetermined position on the rotating cylinder 21. At this time, the post holder 251d,
It passes through a predetermined section between the a-ding guide 28 and the timing plate 30 provided at a position opposite thereto.

As described above, according to this embodiment, by providing the regulating plate 30 at a position facing the loading guide 28, the wobbling of the post holder 25 is reduced and the tape guide post 23 is prevented from coming into contact with the rotating cylinder 21. As a result, the loading locus of the post holder 25 can be brought closer to the rotating cylinder 21, and the size of the magnetic recording and reproducing apparatus can be reduced.

The second embodiment will be described below. FIG. 3 ab is a schematic diagram of a second embodiment of the present invention, which is the same as FIGS. 1 and 2 except for the method of fixing the regulating plate 3°. In FIG. 3, the regulating plate 30 is tightened with screws only on one side, and the other side is locked by a locking portion 34 provided on the loading guide 28 so as to have a distance smaller than the thickness of the post holder 25.

When the post holder 25 passes between the regulating plate 30 and the loading guide 28, which have an interval 36 smaller than the thickness 35 of the post holder 25, the elasticity of the regulating plate 300 prevents the post holder 25 from rattling with the loading guide 28. suppressed to a minimum.

Note that in the first and second embodiments, the regulation plate 30 is the substrate 3.
1, one or both sides are screwed, but the loading guide 28 may be screwed.

Effects of the Invention As described above, according to the present invention, it is possible to secure a sufficient gap during loading between the tape post and the rotating cylinder, where the tape is pulled out from the cassette and wrapped around the rotating cylinder, and thereby the post holder When the loading locus of is brought close to the rotating cylinder (
! : is possible, and the size of the magnetic recording/reproducing device can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a magnetic recording/reproducing apparatus showing a first embodiment of the present invention during loading, FIG. 2 is a partial front sectional view of FIG. 1, and FIGS. FIG. 4 is a plan view of a conventional magnetic recording and reproducing device; FIG. 5 is a detailed plan view of FIG. 4 during loading; FIGS. 6 a and b is a partial front sectional view thereof. 21...Rotating cylinder, 23.24...
・Tape post guide, 26... Post holder, 28... Loading guide, 29...
...Guide groove, 30...Regulation plate, 31...
...Substrate, 33...Magnetic tape, 34...
...Locking part. Name of agent: Patent attorney Shigetaka Awano and 1 other box diagram

Claims (1)

[Claims] A rotating cylinder equipped with a magnetic head, a post for pulling the magnetic tape out of the cassette from a cassette containing a reel wound with the magnetic tape and winding it around the rotating cylinder at a predetermined angle, and a post holder for holding the post. , a magnetic recording device comprising: a loading guide that guides the post holder; and a regulating plate provided at a position facing the loading guide and through which the post holder passes over a predetermined section. playback device.