Open type blind rivet

Abstract

The invention discloses an open type blind rivet, belonging to the technical field of fasteners. The rivet comprises a rivet mandrel with a head, and a rivet body with a mandrel hole and a rivet body head. The rivet mandrel is inserted into the mandrel hole. The rivet is characterized in that blade rims are arranged at intervals on one side of the rivet mandrel which is opposite to the rivet body, and one end of the rivet body facing the blade rims is provided with a conical head. The invention has the advantages that two objects made of the same material and different materials can be riveted, and the riveting work is not affected by the holes on the riveted parts which are of larger inner diameters and smaller outer diameters.

Description

technical field [0001] The invention belongs to the technical field of fasteners, and in particular relates to an open blind rivet. Background technique [0002] Open blind rivets are suitable for riveting occasions where ordinary rivets are used (riveted from both sides), and are widely used in construction, automobiles, ships, aircraft, machines, electrical appliances, furniture, doors and windows and other products. The structure of blind rivets mainly has the following four types: one is a closed oblate head blind rivet that is regulated by Chinese national standards and is suitable for riveting occasions that require higher loads and certain sealing performance. The standard number is GB / T12615 ; The second is a closed countersunk head blind rivet suitable for smooth riveting occasions, the standard number is GB / T12616; the third is an open countersunk head blind rivet suitable for the products listed above by the applicant, the standard number is It is GB / T12617; the ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned open-type blind rivets disclosed by the patent documents have common shortcomings: the one is that the structure of the mandrel head (also known as the mandrel cap) of the mandrel and the structure of the rivet body are unreasonable. When the riveted objects are all riveted with the same material, there will be no adverse factors, but when the two parts to be riveted are of different materials, such as one is plastic and the other is metal, it is very easy to cause damage to the plastic. The plastic is broken, and finally the riveting fails, because the strength of the plastic is far inferior to that of metal; the second is that when two riveted objects (objects) have a large inner hole and a small outer hole at the riveted place, the above patent structure Open type blind rivets cannot be riveted

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