JP2001303463A - Method for attaching end nipple to metallic wire rope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for attaching an end nipple to a metallic wire rope by which a step for attaching the end nipple to the end part of the metallic wire rope is simplified, a material is reduced, and the cost reduction is made possible. SOLUTION: The end part of the metallic wire rope cut into a required length is inserted into a hole part 13 at the center of the nipple 12, and the resultant nipple 12 is riveted from both sides to integrate the nipple 12 with the end part of the metallic wire rope 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching an end nipple of a metal wire rope.

[0002]

2. Description of the Related Art As a method of attaching an end nipple to an end of a metal wire rope, conventionally, a method shown in FIG.
As shown in FIG. 7 (b), a hump 2 is formed at the end of the metal wire rope 1 cut to a required length as shown in FIG. 7 (b), and thereafter, as shown in FIG. 7 (c). The nipple portion 3 is formed by casting so as to wrap the bump 2 at the end of the wire rope 1, and then the surface of the nipple portion 3 is deburred as shown in FIG. As shown in FIG. 8B, a small nipple 5 is attached by caulking to the end of the metal wire rope 4 cut to a required length as shown in FIG.
As shown in FIG. 8C, the nipple 6 previously inserted into the end of the metal wire rope 4 is drawn toward the small nipple 5, and then the small nipple 5 is caulked and expanded as shown in FIG. 8D. The small nipple 5 and the nipple 6
Are generally adopted.

[0003] However, each of these methods is at least four.
A process is required, and the latter method requires a small nipple 5 for attaching the nipple 6, and these conventional methods have a problem that the cost is increased.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and simplifies the process of attaching an end nipple to the end of a metal wire rope, reduces the number of materials, and enables cost reduction. It is an object of the present invention to provide a method for attaching an end nipple of a metal wire rope made as described above.

[0005]

According to the present invention, an end of a metal wire rope cut to a required length is inserted into a center hole of a nipple, and then the nipple is placed on both sides. The gist is to crimp and integrate the nipple with the end of the metal wire rope. Also, in the present invention, the nipple has a cylindrical shape with a short length, and a hole penetrating in the radial direction of the nipple is formed at a central portion in a length direction facing the axial direction, and a metal hole is formed in the hole of the nipple. By hitting both ends of the nipple with a hammer with the end of the wire rope inserted, both ends of the nipple are recessed and deformed by the protrusion of the tip of the hammer, and the nipple bites into the end side of the metal wire rope, The gist of the invention is to integrate and attach a nipple to an end of a metal wire rope.

According to this configuration, the number of steps for attaching the end nipple to the end of the metal wire rope is reduced as compared with the conventional example, and the nipple is crimped from both sides, so that both end faces of the nipple are concavely deformed. , The flesh (material) of the concavely deformed portion protrudes around it, resulting in a large nipple length, and even a short nipple to be used is greatly deformed by caulking from both sides, As a result, a nipple having a small size can be used, and material costs can be reduced.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows a method of attaching an end nipple of a metal wire rope according to an embodiment of the present invention. First, an end of a metal wire rope 11 cut to a required length as shown in FIG. The part is inserted into the hole 13 at the center of the nipple 12 as shown in FIG. 1 (b), and then the nipple 12 is crimped from both sides as shown in FIG. 12 are integrated.

By the way, the metal wire rope 11
As the nipple 12, a material made of zinc, stainless steel, brass or the like is used.

As shown in FIG. 2, the nipple 12 has a columnar shape with a short length, and the hole 13 is formed at the center in the length direction facing the axial direction so as to penetrate the nipple 12 in the radial direction. A state in which the end of the metal wire rope 11 is inserted into the hole 13 of the nipple 12 is supported by a vise 14 as shown in FIG. 3, and both ends of the nipple 12 are hammered as shown in FIG. By striking with a 15, both end surfaces of the nipple 12 are dented and deformed by the convex portion 15 a at the tip of the hammer 15, and the nipple 12 bites into the end side surface of the metal wire rope 11, and the nipple is inserted into the end of the metal wire rope 11. 12 are integrally mounted (see FIG. 5).

When both ends of the nipple 12 are hit with the hammer 15 as described above, both ends of the nipple 12 are dented and deformed. As a result, the length of the cylindrical nipple 12 in the axial direction becomes large, and even if the nipple 12 to be used has a short length, the length is largely deformed by caulking of both end faces, and as a result, the size before deformation is increased. A nipple with a small size can be used, and material costs can be reduced.

The protrusion 15 at the tip of the hammer 15
The shape of “a” is trapezoidal with no corner at the tip as shown in FIGS. 3 and 4, a trapezoidal shape with a sharp tip as shown in FIG. 6 (a), or V as shown in FIG. 6 (b). Various shapes can be considered.

[0012]

As described above, according to the present invention, the number of steps for attaching the end nipple to the end of the metal wire rope is reduced as compared with the conventional example, and a small nipple can be used, thereby reducing the material cost. And cost reduction can be achieved.

[Brief description of the drawings]

1 (a) to 1 (c) are explanatory views schematically showing a method of attaching an end nipple of a metal wire rope according to an embodiment of the present invention.

FIG. 2 is a perspective view of a nipple before swaging.

FIG. 3 is an enlarged sectional view of a main part of FIG. 1 (b).

FIG. 4 is an enlarged sectional view of a main part of FIG. 1 (c).

FIG. 5 is a perspective view showing a state where a nipple is attached to an end of the metal wire rope.

FIGS. 6A and 6B are enlarged views of a main part showing a shape of a convex portion at a tip of a hammer.

FIGS. 7A to 7D are explanatory views schematically showing a method of attaching an end nipple of a metal wire rope in a first conventional example.

FIGS. 8A to 8D are explanatory views schematically showing a method of attaching an end nipple of a metal wire rope in a second conventional example.

[Explanation of symbols]

 11 Metal Wire Rope 12 Nipple 13 Hole 14 Vice 15 Hammer 15a Convex

Claims (2)

[Claims] 1. Insert the end of the metal wire rope cut to the required length into the hole at the center of the nipple, and then crimp the nipple from both sides to integrate the nipple with the end of the metal wire rope A method of attaching an end nipple of a metal wire rope. 2. The nipple has a cylindrical shape with a short length, and a hole penetrating in a radial direction of the nipple is formed at a central portion in a length direction facing the axial direction, and a metal-made hole is formed in the hole of the nipple. By hitting both ends of the nipple with a hammer with the end of the wire rope inserted, both ends of the nipple are recessed and deformed by the protrusion of the tip of the hammer, and the nipple bites into the end side of the metal wire rope, 2. The method for attaching an end nipple of a metal wire rope according to claim 1, wherein the nipple is integrally attached to an end of the metal wire rope.