Square-tube inserting fitting, protecting window provided with same and manufacturing method thereof

Abstract

The invention discloses an inserting fitting for connecting a thick square tube with a thin square tube, which comprises a fitting body, wherein one end of the fitting body is a square inserting part inserted in the thin square tube, the other end of the fitting body is a round inserting part inserted into an inserting hole arranged on the thick square tube, and a retaining ring is arranged between the square inserting part and the round inserting part. The inserting fitting has the advantages of simple structure, convenience in installation and high connecting strength. The invention also discloses a square-tube protecting window provided with the inserting fitting, wherein the thick square tubes are connected into a protecting window frame, the thin square tubes are arranged in the protecting window frame, and the thick square tube and the thin square tube are connected through the inserting fitting. The invention also discloses a manufacturing method of the square-tube protecting window, which comprises the following steps of: (1) preparing materials; (2) blanking; (3) punching; (4) assembling; and (5) fixing, and finishing operation; and in step 4, the inserting fitting is installed in the inserting hole, and both ends of the thin square tube are connected and fixed through the inserting fitting.

Description

technical field [0001] The invention relates to a protective window structure and a manufacturing method of the protective window, in particular to a plug fitting connecting a thick square tube and a thin square tube, a square tube protective window with the plug fitting, and a manufacturing method of the square tube protective window. Background technique [0002] Existing protective windows generally adopt welded structures, and the welded points are always exposed to the outside. After long-term exposure to the sun and rain, the welded points will be oxidized, resulting in connection failure and prone to safety accidents. At present, there are some assembled protective windows on the market. Due to the limitation of assembly and connection technology, the existing assembled protective windows use square tubes as beams and frames, and round tubes are used to penetrate the beams and frames. The structure is easy to manufacture and quick to install, and has been recognized b...

AI Technical Summary

Problems solved by technology

[0002] Existing protective windows generally adopt welded structures, and the welded points are always exposed. After long-term exposure to the sun and rain, the welded points will be oxidized, resulting in connection failure and prone to safety accidents

At present, there are some assembled protective windows on the market. Due to the limitation of assembly and connection technology, the existing assembled protective windows use square tubes as beams and frames, and round tubes are used to penetrate the beams and frames. The structure is easy to manufacture and quick to install, and has been recognized by the market, but it still cannot meet the needs of all customers

In order to improve the overall aesthetics of the protective window, some customers require to replace the round tube with a square tube. This requirement seems simple, but in fact there are the following difficulties: To realize the interspersed connection between the square tubes, there must be thick tubes with different diameters. Square tube and thin square tube. At the same time, the caliber of the thick square tube and the caliber of the thin square tube must be basically the same to ensure the overall aesthetics of the protective window. This requires machining a square shape close to the diameter of the thick square tube on the thick square tube. Jack, this kind of square jack can only be processed by punching, because the removal allowance is very small, it is easy to produce waste products (multiple square jacks must be processed on the thick square tube, even if there is a problem with one square jack, it will cause rough square tube is scrapped), even if all the square sockets are successfully processed on the thick square tube, the connection strength between the thin square tube and the thick square tube will be reduced due to the excessive square hole, which will weaken the safety of the protective window

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