JPH0242694Y2 - - 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.

[Prior art and its problems] Usually, as shown in FIG. 7, the working drum has a diameter corresponding to the thickest outer diameter of the cable wound around the flange 20 at the part where the drum flange 20 and the body 21 touch. A winding start hole 22 is provided, and after the cable tip is inserted and locked into the winding start hole 22, 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.

To solve this problem, various improvements have been made to the winding start hole, but none have been found to be satisfactory.

[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 winding start opening hole extending from the body circumferential surface toward the radial outer circumference of the collar at the joint part of the working drum tsuba with the body, and the winding start opening hole Forms an extension opening extending from the circumferential surface of the drum body toward the radial center of the flange into which the overhanging part of the lid material described later is fitted, and on the outer surface of the flange at the part where the winding start opening hole is provided. A holding member is provided to slidably and securely hold the cover material of the winding start hole in the radial direction of the collar, and the holding member has a size that fits into each of the winding start holes and covers the opening. Attach a cover material that opens and closes each winding start opening hole having the above-mentioned overhanging part, and attach a winding start opening for a small outer diameter cable to be wound around a work drum to the above-mentioned overhanging part of the cover member. The small hole for the hole is formed so as to extend from the body circumferential surface toward the radial outer circumference of the collar when the cover material closes the opening hole after winding.

[Effect]

Regarding the working drum made as above,
If the outer diameter of the cable to be wound is the size of the winding start hole, the cover member is slid and fixed to open the hole, and the cable winding start end is inserted and locked into the hole. On the other hand, if the outer diameter of the cable to be wound is as small as the size of the small hole, the cover member is slid and fixed to close the hole, and the starting end of the cable winding is inserted and locked into the small hole.

〔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 and whose end surface 14 is flush with the inner surface of the collar 1, 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 opening hole 7 is covered with a cover material 8 as shown in FIG. The winding start hole 7 is closed. Furthermore, a small hole 17 for a winding start hole 17 for a cable a having a small outer diameter to be wound around a drum is provided in the cover material 8 for the small hole 7, so that when the winding start hole 7 is closed with the cover material 8 , are formed from the circumferential surface of the body 5 toward the radial outer circumference of the collar 1, and when winding up this small outer diameter cable a, the double-end holes 7 are formed as shown in FIG.
is closed, and the cable a is passed through the small hole 17 and the end of the cable is fixed to the terminal fitting 16.

In addition, when winding a cable with a large outer diameter, if the small winding start hole 7 is closed with the cover material 8, the small hole 1 is closed.
7 appears on the flange surface, but since the outer diameter of the cable is large, it covers the small hole 17, so there is no fear of pressure damage or unraveling of the twist.

Further, 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. They may be provided at appropriate intervals along the surface, and if the difference in the outer diameter of each cable to be wound is large, winding start holes may be provided at necessary stages, and holding members 9, A lid material 8 may be provided.

〔effect〕

As explained above, according to the work drum of the present invention, the winding start hole is opened according to the size of the cable to be wound, and the winding start hole of the cable is supported by this opening and the small hole, so that the cable and the winding start hole are opened. The gap between the wire and the winding hole is small, so there is no pressure damage at the winding start hole, and the cable wound in the second stage does not get stuck in the gap at the winding start hole and become untwisted. When a stuck cable is unwound, the core wire may break,
Since the insulation is not damaged, the production of defective products is suppressed and productivity is improved.

[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 ... End stopper, 17 ... Small hole.

Claims (1)

[Scope of utility model registration request] A winding start opening hole 7 is provided at the joint part of the working drum's body 5 with the body 5 of the drum, and extends from the peripheral surface of the body 5 toward the radial outer circumference of the body 1. An extension opening 7a is formed from the circumferential surface toward the radial center of the collar 1 into which the overhanging portion 15 of the lid member 8 described later is fitted, and on the outer surface of the collar 1 in a portion where the winding start opening hole 7 is provided, Cover material 8 for the winding start hole 7
A holding member 9 is provided to slidably and securely hold the flange 1 in the radial direction of the collar 1, and the holding member 9 is provided with the overhang portion having a size that fits into the winding start opening hole 7 and covers the opening hole 7. A cover member 8 for opening and closing the winding start hole 7 having a diameter of 15 is attached, and a cover member 8 for opening and closing the winding start hole 7 is attached to the overhanging portion 15 of the cover member 8. A working drum characterized in that the small hole 17 is formed so as to extend from the circumferential surface of the body 5 toward the radial outer circumference of the collar 1 when the winding start hole 7 is closed with the cover material 8.