CN2052140U

CN2052140U - Video tape reels

Info

Publication number: CN2052140U
Application number: CN 89206858
Authority: CN
Inventors: 张孝根; 朴广绪
Original assignee: Skc Corp This Co Is Known
Current assignee: Skc Corp This Co Is Known; SKC Co Ltd
Priority date: 1989-05-05
Filing date: 1989-05-05
Publication date: 1990-01-31

Abstract

The utility model relates to a video tape reel, which improves the clamp force on a guiding belt. The utility model is provided with a protrusion, and points of 9, 9', 10 and 10 are combined with the inner wall of an axis wheel disc into an entity. Therefore, a guiding belt 6 can be tightly clamped between a clamping component 4 and a protrusion 6, so the clamping of the guiding belt and the reliability of the clamping component 4 can be improved.

Description

Video tape reels

The present invention relates to the magnetic tape core of boxlike video tape, particularly a kind of is the improvement of retained part on the arbor wheel dish of fixed guide band one end.

Fig. 3 expresses spool structure in the prior art, and wherein holder is a thin plate that injects on the spool wheel disc 1, constitutes S between a weight in the holder 4.Use this holder, this part can be bent, and this bending can make clamping loose again.

Have, the fixed position of pilot tape only is two places again, represents the junction between spool wheel disc 1 and holder 4 with a and b.Therefore, any bad engagement of pilot tape all can cause the reduction of clamping force in the use.

The present invention attempts to reduce the shortcoming of described prior art device, one of purpose of the present invention provide a kind of have to improve step up the pilot tape spool of power, can reduce the machinery error possibility of holder function.

Magnetic tape core according to the present invention comprises a wheel disc, there is a holder that pilot tape is fixed on the wheel disc on it, holder is installed in two opposite ends, wheel disc outer wall cross section, wheel disc has inner wall section, a projection is arranged on it, can make pilot tape be sandwiched in the surface portion of projection and the surface portion of holder like this.

Clamping between the projection holder can improve the reliability of pilot tape maintenance.

Projection has a plurality of steps the most, and pilot tape can be clamped on holder surface and the projection on two steps at least.Has the 1st and the 2nd step on the projection, this moment, pilot tape may be clamped in two places between the 1st step on holder surface portion and the projection, two places in projection the 2nd step and holder for example, additional like this holding force has further been improved the maintenance of pilot tape, can obtain bigger stability at other two places clamping pilot tape, for example, between the end of wheel disc outer wall two opposite ends and holder, have 6 place's bites.

A plurality of steps are arranged on projection, and pilot tape can be clamped between end hook and two steps.

For improving the reliability of clamping, the outside surface of projection can be made and prevent holder curving inwardly towards wheel disc.

Above-mentioned purpose of the present invention and other advantage are by to the description of embodiment and with reference to the accompanying drawings can be clearer and more definite, wherein:

Fig. 1 is the decomposition diagram of apparatus of the present invention.

Fig. 2 is the sectional plane figure of the device of amplification.

Fig. 3 is the amplification view that installs in the prior art.

Referring to Fig. 1 and Fig. 2, holder 4 by two

bare terminal ends

3,3 of two relative hooks 5,5 ' the be fixed on outer wall 2 of wheel disc 1 ' between, with fixed guide band 6.Projection 8 is to constitute on the inwall 7 of wheel disc 1 integratedly.Pilot tape 6 pass the 1st step 99 on the projection 8 ' and holder 4 on hook 5,5 ' between, pass the 2nd step 10 10 of protrusion 8 ' and the inboard of holder 4 between, also pass the outer wall two

ends

3,3 of wheel disc 1 ' and the two ends of holder 4 between.6 bites have been formed like this.

As shown in Figure 2, the device of the present invention of Gou Chenging has specific characteristic like this, the

2nd step

10,10 of projection 8 ' near the inside surface 4 of holder 4 ', make pilot tape 6 be clamped between them, thus holder 4 be one can not inflexed thin plate.

Therefore, the possibility that produces mechanical failure in the outer wall 2 of wheel disc 1 and the prior art between the holder 4 just can be avoided in the present invention, thereby has improved the reliability of magnetic tape core holding function.

As mentioned above, guiding has 6 places and is held, two

hooks

5,5 that are in holder 4 ' with the

1st step

9,9 of projection ' between, other two be in the two ends of holder 4 and the

opposite end portion

3,3 of outer wall 2 ' between.Remaining two the

2nd steps

10,10 that are in projection 8 ' and the inside surface 4 of holder 4 ' between.When pilot tape 6 was held at 6 places slightly to be W shape profile, pilot tape was compared with prior art and is effectively clamped like this.

Device of the present invention prevents the bending of thin holder, and simultaneously, the projection on wheel disc has increased the quantity of clamping characteristics, to strengthen the clamping effect, can reduce the possibility of pilot tape mechanical loss thereupon.

In the claim scope, apparatus of the present invention can have various improvement.

Claims

1, the picture recording magnetic tape core comprises an arbor wheel dish, it is characterized in that having on the arbor wheel dish holder to be used for pilot tape is fixed on the wheel disc, holder is positioned in two opposite end portions of wheel disc outer wall otch, and wheel disc has the inwall otch to have on it projection to be provided with to such an extent that pilot tape can be clamped between the surface portion of the surface portion of projection and holder.

2, spool according to claim 1, the projection that it is characterized in that spool comprise that a plurality of steps and pilot tape are clamped between two steps and holder surface portion of projection at least.

3, spool according to claim 2 is characterized in that having on the projection the 1st and the 2nd step.

4, spool according to claim 3 is characterized in that pilot tape is clamped in the 1st step of projection and two places between the holder surface portion, and has two places to be held between at least in the 2nd step of projection and holder.

5, spool according to claim 4 is characterized in that pilot tape can also be held at other two places, has 6 places folder characteristics.

6, spool according to claim 5 is characterized in that other two bites are between two opposite ends of holder two ends and arbor wheel dish outer wall otch.

7,, it is characterized in that holder is fixed between reel outer wall two opposite ends by its two ends according to the described spool of aforementioned each claim.

8, according to the described spool of aforementioned each claim, it is characterized in that projection comprises a plurality of steps, pilot tape is held between tail end hook on the holder and above-mentioned two steps.

9,, it is characterized in that the outer surface part of projection abuts against on the inside surface of holder according to the described spool of aforementioned each claim.

10, the picture recording magnetic tape core comprises a holder, it is characterized in that holder being fixed on the two opposite end portions of outer wall of arbor wheel dish in order to the fixed guide band by the both ends hook on it, wherein two steps of projection are made on the internal face of arbor wheel dish integratedly, this design can make guiding have 6 places and clamp, have two to be between the end hook of the 1st step of projection and holder, two be in the 2nd step of projection and the holder between.