Self-expanding shooting nail for fixing connecting piece

Abstract

A self-expanding nail used for fixing connectors includes an expansion spring ring and a nail, and the nail includes a nail cap, an expansion nail rod, a transition nail rod and a nail head connected in sequence. The beneficial effect of the present invention is that when the nail is shot into the main base, the expansion spring coil follows the nail and enters into the main base until the blocking position touches the surface of the base, and the nail continues to move forward under force. When going forward into the inside of the main base, the expansion nail shank begins to enter and squeeze the expansion coil, and the expansion coil begins to expand outward until the nail cap contacts the blocking position. Due to the double wall thickness of the expansion coil and the expansion The sum of the diameters of the nail rods is 0.2mm larger than the maximum diameter of the nail head, resulting in a 0.2mm interference between the expansion spring ring and the main base. The spring ring is displaced, and then achieves a locking effect, which effectively prevents the connecting piece 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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