Novel self-tapping screw

Abstract

The invention discloses a novel self-tapping screw. The novel self-tapping screw comprises a screw head, a screw rod and a self -tapping cone, wherein the screw rod is arranged at the bottom of the screw head, the self-tapping cone is arranged at the bottom end of the screw rod, a chip collecting groove is vertically arranged in the screw rod in a penetrating mode, a chip removal groove is formedin the bottom of the self-tapping cone, the chip removal groove communicates with the chip collecting groove, first threaded surfaces are arranged on the threaded rod, second threaded surfaces are arranged on the self-tapping cone, the first threaded surfaces and the second threaded surfaces are connected with each other and have the same threaded distance, a plurality of chip removal holes are formed between threads of the first threaded surfaces, the chip removal holes communicate with the chip collecting groove, a screwing groove is formed in the top end of the screw head, and a plurality of anti-loose balls are arranged at the top ends of the second threaded surfaces. According to the novel self-tapping screw, generated chippings can be cleaned and collected in the process of drillinga bottom hole by the screw, so that the smoothness of thread installation is improved; and meanwhile, the screw can be limited and locked at the upper end, so that screw threads are prevented from loosening, and the connection and fixation are stable.

Description

【Technical field】 [0001] The invention relates to the technical field of hardware standard parts, in particular to the technical field of a novel self-tapping screw. 【Background technique】 [0002] Self-tapping screws, or quick-thread screws, are widely used in ports, electric power, steel, shipbuilding, petrochemicals, mines, railways, construction, metallurgical chemicals, automobile manufacturing, plastic machinery, industrial control, highways, large-scale transportation, and pipeline auxiliary facilities. Machinery and equipment for important industries such as slope tunnels, shaft treatment and protection, sea rescue, ocean engineering, airport construction, bridges, aviation, aerospace, venues, and infrastructure projects. When connecting with self-tapping screws, the threaded bottom hole is first made on the connected part, and then the self-tapping screw is screwed into the threaded bottom hole of the connected part, but the existing self-tapping screw has defects i...

AI Technical Summary

Problems solved by technology

When connecting with self-tapping screws, the threaded bottom hole is first made on the connected part, and then the self-tapping screw is screwed into the threaded bottom hole of the connected part, but the existing self-tapping screw has defects in its own structure during use. The thread is prone to be blocked by debris accumulated in the hole, the self-locking ability is poor, and the thread is easy to loosen, resulting in unstable connection

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