Self-expanding shooting nail for fixing connecting piece

Abstract

The invention discloses a self-expanding shooting nail for fixing a connecting piece. The self-expanding shooting nail for fixing the connecting piece comprises an expanding spring ring and a shootingnail; and the shooting nail comprises a nail cap, an expanding nail rod, a transition nail rod and a nail head which are connected in sequence. The self-expanding shooting nail for fixing the connecting piece has the beneficial effects that when a shooting nail is shot into a main substrate, the expanding spring ring enters the main substrate along with the shooting nail until a stop clamping position is in contact with the surface of the substrate, and the shooting nail continues going forwards under force; when the shooting nail continues going forwards to enter the main substrate, a rod part of the expanding nail starts to enter and extrude the expanding spring ring, and the expanding spring ring starts to expand outwards unit the nail cap is in contact with the stop clamping position;the sum of the thickness of a double-layer wall of the expanding spring ring and the diameter of the expanding nail rod is 0.2 mm greater than the maximal diameter of the nail head, so that interference of 0.2 mm is generated between the expanding spring ring and the main substrate, and meanwhile, each of the expanding nail rod and a spring body part is provided with a retreating stop ring to prevent the expanding nail rod and the expanding spring ring from displacing, so that a locking effect is achieved, and the connecting piece is prevented from falling off.

Description

technical field [0001] The invention relates to the technical field of nailing, in particular to a self-expanding nail used for fixing connectors. Background technique [0002] Nail shooting is a nail driven into a building by using the gunpowder gas generated by firing blank bombs as power. It usually consists of a nail and a toothed ring or a plastic retaining collar. The function of the nail is to drive the nail into the matrix such as concrete or steel plate to fasten the connection. The material of the nails is generally 60# steel, after heat treatment, the hardness of the core of the finished product is HRC52-57. Can shoot through Q2350.8mm-1.2mm steel plate. [0003] In the prior art, when the connector needs to be connected to the concrete or the steel plate, the nail needs to be used, but when the nail is injected into the concrete or the steel plate, it is easy to fall off from the concrete or the steel plate, and the connection effect is poor , it is difficult...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when the connector needs to be connected to the concrete or the steel plate, the nail needs to be used, but when the nail is injected into the concrete or the steel plate, it is easy to fall off from the concrete or the steel plate, and the connection effect is poor , it is difficult to meet the actual use demand

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