JP2832881B2 - How to make a connecting ring at the end of the cored cord - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a connecting ring at an end of a cored cord such as a wire with a synthetic resin coating.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 9, an end of a cord 3 is folded into two with a coating 2, and the folded portion is bound by a fastening sleeve 18 to form a connecting ring 19. The format is known.

[0003]

The conventional type described above is
When a large load is applied to the connecting wheel, the core and the coating may become thin due to elongation, and the end of the core may be displaced little by little by repeated use in the fastening sleeve or at once due to overload. It is easy to come off from inside.

[0004] It is an object of the present invention to provide a method for forming a connecting ring at the end of a new cored cord designed so as to prevent the end of the core from coming off easily.

[0005]

In order to achieve the above object, a method according to the present invention comprises the steps of stripping a coating on an end of a cord to expose an end of a core, and folding the end into two. A step of forming a retaining auxiliary wheel by stacking half of the same end on the other half and binding the middle of the overlapped portion by crimping with a retaining sleeve, the above-mentioned exposed end in the non-strip portion of the coating of the cord; A step of folding the exposed end portion to the non-strip portion by folding the close part in two, and attaching a fastening sleeve to the overlap portion, in which the above-mentioned retaining auxiliary wheel, the retaining sleeve, and the end of the non-strip portion are placed therein. A step of crimping the fastening sleeve with the cover in a concealed state, and covering the crimped portion of the fastening sleeve with a heat-shrinkable synthetic resin tube and thermally shrinking the tube to form the entire crimped portion Step of coating, in which were so formed sequentially.

[0006]

It is clear from the description of the drawings that the retaining sleeve and the retaining auxiliary wheel according to the present invention significantly fulfill the retaining function in the fastening sleeve.

[0007]

According to the method of the present invention, there is provided a core having a connecting ring in which the end of the core is prevented from coming off due to a retaining sleeve and a retaining auxiliary wheel existing in the fixing sleeve. The code can be provided reliably and easily, and an excellent effect of completely achieving the intended purpose can be achieved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. First, a stainless steel wire core 1 is coated with a vinyl chloride coating 2 and a coating 4 at the end of a cord 3 is stripped. After exposing the end portion 5 (see FIG. 1), the end portion 5 is folded in half, the half 6 of the end portion is overlapped with the other half 7, and a brass retaining sleeve 8 is fitted in the middle of the overlapped portion. Covering (see FIG. 2), the retaining sleeve 8 is crimped (see FIG. 3) to bind it, and the excess part 9 formed by this binding is cut off (see FIG. 3) to constitute a retaining aid wheel 10. Then, the portion near the exposed end 5 of the non-strip portion 11 of the coating 2 of the cord 3 is folded in two, and the exposed end 5 is overlapped with the non-strip portion 11 (see FIG. 4). The fastening sleeve 13 The retaining assisting wheel 10, the retaining sleeve 8, and the end of the non-strip portion 11 are covered (see FIGS. 4 and 5) so that the ends of the non-strip portion 11 are hidden therein, and the fixing sleeve 13 is crimped (see FIG. 5). The crimping portion 14 of the fastening sleeve 13 is covered with a heat-shrinkable synthetic resin tube 15 (see FIGS. 5 and 6) and is thermally contracted to cover the entire crimping portion 14 (see FIGS. 6 and 7). Therefore, the connecting ring 16 is formed at the end of the cord 3.

As shown in FIGS. 4 and 5, the fastening sleeve 13 and the heat-shrinkable synthetic resin tube 15 are inserted into the cord 3 in advance before the crimping and heat shrinkage so that the work can be easily performed. It is.

FIG. 8 shows a tool dropping safety rope obtained by providing connecting wheels 16 at both ends of the cord 3 and connecting the hooks 17 to the connecting wheels 16 according to the present invention. Is what it is.

[Brief description of the drawings]

FIG. 1 is a front view showing a state where a coating is stripped.

FIG. 2 is a front view showing a state in which a retaining sleeve is covered.

FIG. 3 is a front view showing a state in which a retaining sleeve is crimped.

FIG. 4 is a front view showing a state where an exposed end portion is overlapped with a non-strip portion.

FIG. 5 is a front view showing a state in which the fastening sleeve is crimped.

FIG. 6 is a front view showing a state in which the heat-shrinkable synthetic resin tube is heat-shrinked.

FIG. 7 is a sectional view taken along the line AA of FIG. 6;

FIG. 8 is a perspective view showing a tool drop prevention safety rope.

FIG. 9 is a front view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 core 2 coating 3 cord 4 end coating 5 exposed end 6, 7 half 8 retaining sleeve 9 surplus portion 10 retaining assisting wheel 11 non-strip portion 12 overlapping portion 13 fastening sleeve 14 crimping portion 15 heat-shrinkable synthetic resin Tube 16 Connecting wheel 17 Hook 18 Fastening sleeve 19 Connecting wheel

Claims (1)

(57) [Claims] 1. A step of stripping a coating on an end portion of a cord to expose an end portion of a core, folding the end portion in half, stacking one half of the end portion on another half, and connecting an intermediate portion of the overlap portion. A step of forming a retaining auxiliary wheel by bundling by press-fitting with a retaining sleeve, a step of folding a portion close to the exposed end portion of the non-strip portion of the coating of the cord and folding the exposed end portion on the non-strip portion, A step of covering the overlapping portion with a fastening sleeve, in which the removal assisting wheel, the removal sleeve, and the end of the non-strip portion are hidden, and crimping the fastening sleeve; A step of covering the entirety of the crimping portion by covering a heat-shrinkable synthetic resin tube on the heat-shrinkable synthetic resin tube and heat-shrinking the heat-shrinkable synthetic resin tube. How to create a wheel