JPH0416264Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a tape running guide device used in a cassette type video tape recorder or the like.

BACKGROUND ART In recent years, as video tape recorders have become smaller and lighter, the diameter of each tape guide post and the weight of each member have been reduced.

FIG. 3 shows an example of a conventional tape running guide device. In the figure, 1 is a cassette for storing a magnetic tape, 2 and 2a are the magnetic tapes, and 2a
indicates the unloading position, and 2 indicates the loading position. (Hereinafter, numbers without a subscript indicate the loading position, and numbers with a subscript a indicate the unloading position.) 3 and 3a are forked arms, which rotate around the support shaft 10. to move between the unloading position and the loading position. 4, 4a are the arms 3
The pinch roller is rotatably fixed to the tip of the first finger portions 11, 11a of the magnetic tape 2, and runs the magnetic tape 2 between it and a capstan, which will be described later. Reference numerals 5 and 5a designate tape guide posts having no rotating member and having one end fixed to the tip of the second finger portions 12 and 12a of the arm 3. 6
is an audio control head, 7 and 8 are tape regulation posts that regulate tape running, and 9 is a capstan. Note that the audio control head 6, tape regulating posts 7, 8, and capstan 9 are all provided on a chassis (not shown).

FIG. 4 shows a sectional view taken along line A-A' in FIG. 3.
The same members as in FIG. 3 are given the same reference numerals. 1
Reference numeral 3 denotes a pinch roller shaft, which is implanted at the tip of the first finger portion 11 of the arm 3. The pinch roller 4 is rotatably fitted onto the pinch roller shaft 13. 14 is a cap for preventing the pinch roller from coming off, and this cap is attached to the pinch roller shaft 13 as shown in the figure after the pinch roller 4 is inserted.

Problems to be Solved by the Invention However, in the conventional tape running guide device configured as shown in FIGS. 3 and 4, the tape guide post 5 has a small diameter and one end a is a free end. There was a problem in that the tape guide post 5 resonated due to the tape tension, which promoted tape vibration and caused horizontal vibration of the playback screen.

In view of the above-mentioned problems, the present invention is designed to ensure stable running of the tape by making the tape guide post less likely to resonate even if it has a small diameter.

Means for Solving the Problems In order to solve the above-mentioned problems, the tape running guide device of the present invention has a vibration isolating member attached to the free end of the tape guide post, which has one end fixed and the other end free. This is what I did.

Function The present invention is configured as described above to suppress the resonance of the tape guide post due to the tape tension, and effectively prevent horizontal vibration of the playback screen.

Embodiments Hereinafter, embodiments of the present invention will be explained with reference to FIGS. 1 and 2. Components similar to those explained in FIGS. 3 and 4 will be denoted by the same reference numerals. , redundant explanation here will be omitted. The difference between FIGS. 1 and 2 from FIG. 4 is that a portion of the cap 15 attached to the upper end (tip) of the pinch roller shaft 13 is extended, and the cap 15 comes into contact with the free end a of the tape guide post 5. The reason is that a vibration isolating member 16 that fits into the vibration isolating member 16 is used. Here, the cap 15 including the vibration isolating member 16
is made of an elastic material such as synthetic resin, and is normally pressed against the free end a of the tape guide post 5 with a predetermined force indicated by F. In addition, the second
The figure shows a perspective view of FIG.

Effects of the Invention As is clear from the above explanation, the tape running guide device of the present invention can suppress resonance caused by the tape tension even if the tape guide post has a small diameter and does not have a rotating member. An excellent effect can be obtained in that horizontal shake of the playback screen can be effectively prevented.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the main parts of an embodiment of the present invention, Figure 2
The figure is a perspective view of the embodiment of the present invention, Figure 3 is a plan view of the main part of the conventional example, and Figure 4 is A--A in Figure 3.
It is a sectional view taken along the line A'. 1...cassette, 2, 2a...magnetic tape,
4, 4a...pinch roller, 5, 5a...tape guide post, 15...cap, 16...vibration isolating member.

Claims (1)

[Scope of utility model registration request] An arm that moves by rotating around a support shaft between a loading position where magnetic tape is recorded or played back and an unloading position where a cassette is loaded or unloaded, and one end is fixed to the arm and the other end is free. a tape having first and second finger portions forming ends, and a tape having one end fixed to the tip of the second finger portion and the other end being a free end so as to wrap the magnetic tape at a predetermined angle at the loading position; a guide post; a pinch roller shaft disposed near the tape guide post and having one end fixed to the tip of the first finger portion and the other end free to rotatably support the pinch roller; a cap attached to the tip of the pinch roller shaft to prevent the pinch roller from slipping out; and a vibration isolating member extending from a part of the cap and press-contacting the free end of the tape guide post; A tape running guide device characterized in that the vibrating member is made of an elastic body.