Expansion bolt

Abstract

The invention discloses an expansion bolt which comprises a first bolt, an expansion set and a second bolt, wherein the expansion set sleeves the surface of the first bolt through a first internal thread and a first external thread; a second internal thread is arranged on the surface of an inner cavity of the first bolt; a second external thread is arranged on the surface of the second bolt; the second bolt sleeves the inner cavity of the first bolt through the second external thread and the second internal thread; a first connecting rod and a second connecting rod are respectively and movably arranged at the upper part and the lower part of the left end surface of the second bolt; a first fixing clip and a second fixing clip are respectively arranged at the left ends of the first connecting rod and the second connecting rod; and a spring is arranged between the first fixing clip and the second fixing clip. When the outer part of the expansion bolt is fastened, the inner part of the expansion bolt can be also clamped; a dual-layer clamping structure is adopted, so that an article is mounted through the expansion bolt more tightly; the fixing clips can shrink by reversely rotating the second bolt, so that the mounted article is conveniently dismounted; and because of adopting a reinforced structure, the expansion set is more durable.

Description

technical field [0001] The invention relates to the technical field of hardware accessories, in particular to an expansion bolt. Background technique [0002] At this stage, people will use expansion bolts when decorating houses and installing water and electricity. The expansion bolts have a simple structure and are easy to use. However, the expansion sleeves of the expansion bolts at this stage are made of a single plastic or a single metal without a reinforced structure. This makes the expansion sleeve of the expansion bolt easy to be damaged when in use, and the common expansion bolt at this stage adopts a single screw-type expansion fastening method, and the single fastening structure is likely to cause the phenomenon that the installation is not firm, and once After fastening, it is difficult to disassemble again, which causes great inconvenience to users. Therefore, we propose an expansion bolt. Contents of the invention [0003] In view of the above-mentioned tech...

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Problems solved by technology

[0002] At this stage, people will use expansion bolts when decorating houses and installing water and electricity. The expansion bolts have a simple structure and are easy to use. However, the expansion sleeves of the expansion bolts at this stage are made of a single plastic or a single metal without a reinforced structure. This makes the expansion sleeve of the expansion bolt easy to be damaged when in use, and the common expansion bolt at this stage adopts a single screw-type expansion fastening method, and the single fastening structure is likely to cause the phenomenon that the installation is not firm, and once It is difficult to disassemble after fastening, which causes great inconvenience to users. For this reason, we propose an expansion bolt

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