Patent Application
20150352407
The present disclosure relates to the field of rock climbing equipment and technologies, in particular, to a seamless webbing loop of a rock climbing quickdraw.
With social development and popularity of sports, more and more people participate in physical exercise, and more and more sporting equipment emerge accordingly. In the field of rock climbing equipment and technologies, a quickdraw in the prior art generally employs a webbing of high strength, both ends of which are abutted against each other and then sewn together by a sewing machine. Such a webbing loop has a low cost and is easy to produce. However, a seam exists between the abutted and sewn both ends of the webbing, and the sewn portion of the webbing loop is subjected to relatively concentrated stress when the webbing loop is applied by a load and hence may be likely broken, leading to a security risk.
A seamless webbing loop of a rock climbing quickdraw is disclosed. The webbing loop is easy to produce, but is strong, safe and practical, and is seamless after the webbing loop is sewn.
The present disclosure adopts the following technical solution.
A seamless webbing loop of a rock climbing quickdraw, including a winding yarn and a webbing; the winding yarn is an annular yarn formed by a single yarn that winds into circles or formed by a plurality of combined closed annular coils; the winding has an annular shape, and is provided with an opening on its radially inner face, where the opening is configured to receive the annular yarn, so that the annular yarn can be wrapped by the winding; the quickdraw is sewn with a stitching thread.
Wherein, the webbing is a polyester webbing with high strength of a single layer structure.
Wherein, the annular yarn is a wire formed by a tetoron filament or a nylon filament.
Wherein, a diameter of the wire is greater than or equal to 0.08 mm and less than or equal to 5 mm.
Wherein, a perimeter of an outer contour of the webbing is slightly greater than that of the annular yarn.
Wherein, a diameter of a cross section of the webbing is slightly greater than that of the annular webbing.
Wherein, the stitching thread is a wire made by a tetoron filament or a nylon filament.
The beneficial effects of the disclosure are as follows. A seamless webbing loop of a rock climbing quickdraw in the disclosure includes a winding yarn and a webbing. The winding yarn is an annular yarn formed by a single yarn that winds into circles or formed by a plurality of combined closed annular coils; the winding has an annular shape, and is provided with an opening on its radially inner face, where the opening is configured to receive the annular yarn, so that the annular yarn can be wrapped by the winding; and the quickdraw is sewn with a stitching thread. The annular yarn formed by winding overcomes the defect of the seam between the abutted ends of a webbing in the prior art, thus making the quickdraw more strong and safe. The disclosure has simple processes and is strong, safe and durable, and is seamless after the webbing loop is sewn.
A list of the reference numerals:
The technical solution of the disclosure will be further described by way of embodiments below in conjunction with the accompanying
A seamless webbing loop of a rock climbing quickdraw is disclosed. A quickdraw 5 includes a winding yarn 3 and a webbing 1. The winding yarn 3 is an annular yarn formed by a single yarn that winds into circles or formed by a plurality of combined closed annular coils; the winding 1 has an annular shape, and is provided with an opening 2 on its radially inner face, where the opening 2 is configured to receive the annular yarn, so that the annular yarn can be wrapped by the winding 1; and the quickdraw 5 is sewn with a stitching thread 4. By wrapping the winded annular yarn in the annular webbing with the opening, and then sewing the webbing by a sewing machine, the quickdraw is made safe and practical. The annular yarn formed by winding overcomes the defect of the seam between the abutted ends of a webbing in the prior art, thus making the quickdraw more strong and safe. The webbing loop for a rock climbing quickdraw in the present disclosure may be manufactured by a simple process, but is strong, safe and durable, and is seamless after the webbing loop is sewn.
The webbing 1 is a polyester webbing with high strength of a single layer structure. The high-strength polyester webbing has high tensile strength, is strong and wearable, and is suitable for use in outdoor rock climbing.
The annular yarn is a wire formed by a tetoron filament or a nylon filament, or a wire with other materials.
A diameter of the wire is greater than or equal to 0.08 mm and less than or equal to 5 mm. A thickness of the wire can be selected based on a load-bearing capability and a thickness of a quickdraw actually used.
A perimeter of an outer contour of the webbing is slightly greater than that of the annular yarn, so that the webbing wraps the annular yarn completely.
A diameter of a cross section of the webbing 1 is slightly greater than that of the annular webbing.
The stitching thread 4 is a wire made by a tetoron filament or a nylon filament, or other wires which are strong and durable and adopted for sewing.
The technical principles of the disclosure have been described in conjunction with the embodiments as above. The description is only intended to explain the principles of the disclosure, but not to limit the disclosure. Based on the explanation herein, other embodiments can be conceived by those skilled in the art without inventive working, thus these embodiments should be included within the protection scope of the disclosure.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN13/87085 | 11/13/2013 | WO | 00 |
