JPH0242693Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a working drum, and in particular, when winding cables of various sizes on the same drum, there is a mismatch between the size of the cable winding opening hole and the cable size. The present invention relates to a working drum that does not cause pressure scratches on the surface of cables or crosstalk of communication cable assembly cores.

[Conventional technology and its problems]

As shown in FIG. 7, the work drum is usually provided with a winding start opening hole 22 corresponding to the thickest outer diameter of the cable to be wound up in the collar 20 at the part where the drum collar 20 and the body 21 contact each other. After the cable tip is inserted into the winding start hole 22 and locked, it is wound around the body 21.

However, unlike product drums, these work drums must wind cables of various sizes, and if the cable to be wound is thin relative to the winding start hole 22, the cable When it is wound around the body 21 of the drum and folded back at the opposite collar and reaches the winding start hole 22 at the end of the second stage, it enters the winding start hole 22 and is pressed against the edge of the winding hole 22. The pressure of stacked cables increases the pressing force, causing scratches on the surface of the cables, and the arrangement of the collective cores of communication cables collapses, causing crosstalk.

In order to solve this problem, various improvements have been made to the winding start hole, but nothing satisfactory has yet been proposed.

[Purpose of invention]

In view of the above problems, this proposal allows the size of the winding start hole of the working drum to be changed appropriately according to the outer diameter of the cable to be wound, thereby preventing the above-mentioned pressure scratches and crosstalk. The purpose of the present invention is to provide a working drum that does not cause generation.

[Means to achieve the purpose]

In order to achieve the above object, the present invention provides a plurality of winding start opening holes of different sizes from the circumferential surface of the drum toward the radial outer circumference of the brim at the joint part of the brim of the working drum with the body; Each of the winding start openings is provided with an extension opening extending from the circumferential surface of the drum body toward the radial center of the brim into which the overhanging portions of each cover material described later are respectively fitted, and the winding start opening holes are provided. A holding member is provided on the outer surface of the collar at the portion where the winding starts, and a holding member is provided on the outer surface of the collar for sliding and fixing the cover material of each of the winding start openings in the radial direction of the collar. The winding start hole is fitted with a cover member that opens and closes each winding start hole, which has the above-mentioned overhang portion of a size that covers the hole.

[Effect]

Regarding the working drum made as above,
When winding the cable, select the winding start hole according to the outer diameter of the cable to be wound.
The opening of the hole is slid and fixed, and the other winding start holes are closed with the lid.

By doing this, the winding start hole that matches the outer diameter of the cable is used, and the winding start hole that does not match the size is covered, so that the cable can enter the hole as described above. There is no risk of scratches caused by being pressed against the edges or crosstalk caused by crosstalk.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of a working drum according to the present invention, where 1 is a collar and 2 is a boss. There is a shaft hole 3 in the center of the boss 2, and a dent receiving hole 4 is provided around the boss 2. 5 is the body of the drum, tsuba 1
and the shell 5 are joined to each other via an annularly formed angle 6 (see FIG. 3). At the joint of the flange 1 with the body 5, two large and small winding opening opening holes 7 are provided along the outer circumferential surface of the drum body 5 and from the circumferential surface of the drum body 5 toward the radial outer circumference of the flange 1. On the outer surface of the collar 1 provided with the winding start opening hole 7, a holding member 9 for the cover material 8, which will be described later and is capable of sliding and fixing the cover material 8 of the winding start hole 7, is fixed with bolts 10. . This holding member 9 has a Y-shape as shown in FIG.
A set bolt 12 and its nut 13 are inserted into the cover member 8 through an elongated hole 11 cut in the cover member 8 so as to be slidably fixed therein.

The lid member 8 has an overhanging portion 1 whose cross section is large enough to fit into the winding start hole 7 as shown in FIG.
5, and the winding start hole 7 is formed with an extension opening 7a extending from the circumferential surface of the drum body 5 toward the radial center of the collar 1, and when the lid member 8 is slid and fixed upward. The overhanging part 15 makes the inner surface of the collar 1 flush and closes the winding start hole 7, and when it is slid downward and the overhanging part 15 is fitted into the extension opening 7a and fixed, the opening is opened. Then, the winding start end of the cable a is inserted and fixed to the terminal stopper 16.

One winding start hole 7 is provided in each size,
When winding a cable a with a large outer diameter, the small winding start hole 7 is covered with a cover material 8 as shown in Fig. 5, and when winding a cable a with a small outer diameter, as shown in Fig. 6. After closing the large winding start opening 7 and passing the cable a through the opened opening 7, the cable end is fastened to the terminal fitting 16.
Wind cable a around the drum.

In the above embodiment, the winding start opening holes 7 are arranged in the same place, and the holding member 9 and the lid member 8 are also installed accordingly. Alternatively, if there is a large difference in the outer diameter of each cable to be wound, winding start holes may be provided at necessary stages, and the holding member 9 and cover material corresponding to the winding opening holes may be provided at necessary stages. 8 may be provided.

〔effect〕

As explained above, according to the work drum of the present invention, the winding start hole is adapted to the size of the cable to be wound, and the rest is covered with a cover material, so the gap between the cable and the winding start hole is small. Therefore, there will be no pressure damage at the winding start hole, and the second stage of wound cable will not get stuck in the gap at the winding start hole and become untwisted.
Furthermore, when the cable that is stuck in the cable is unwound, the core wire will not break or the insulation will be damaged.
This suppresses the occurrence of defective products and contributes to improving productivity.

[Brief explanation of the drawing]

FIG. 1 is a front view of the working drum according to the present invention;
Figure 2 is an enlarged view of the same main part, Figure 3 is A-A of Figure 2.
4 is a sectional view taken along line B-B, FIGS. 5 and 6 are explanatory diagrams of the operation of the embodiment, and FIG. 7 is a front view of a conventional working drum. 1... Tsuba, 2... Boss, 3... Shaft hole, 4... Flange receiving hole, 5... Body, 6... Angle, 7... Winding start hole, 8... Lid material, 9... Holding member, 10
... Bolt, 11 ... Elongated hole, 12 ... Set bolt, 13 ... Nut, 14 ... End face, 15 ... Overhang, 16 ... Terminal stopper.

Claims (1)

[Scope of utility model registration request] A plurality of winding start opening holes 7 of different sizes are provided at the joint portion of the working drum with the body 5 of the collar 1 from the peripheral surface of the body 5 toward the radial outer circumference of the collar 1, and each of the winding start opening holes 7 is provided. , the flange 1 is lowered from the circumferential surface of the drum body 5.
An extension opening 7a is formed toward the radial center of the lid member 8, into which an overhanging portion 15 of each cover member 8 described later is fitted, and each of the winding start openings is formed on the outer surface of the collar 1 in a portion where the winding start opening hole 7 is provided. The cover material 8 of the hole 7 is attached to the collar 1.
A holding member 9 is provided that can be slid and fixed in the radial direction of the winding, and the holding member 9 has the projecting portion 15 having a size that fits into each of the winding start opening holes 7 and covers the opening holes 7. A working drum characterized in that it is equipped with a lid member 8 that opens and closes each winding start hole 7.