A Blind Rivet with Controllable Broken Neck Slot with Bushing Interference

Abstract

The invention provides a blind rivet with a bushing interference function and a controllable neck-breaking groove. The blind rivet comprises a core rod, a drive nut, a blind rivet body, a bushing and a pipe body. The core rod is provided with a head convex body and the neck-breaking groove, and a first threaded section and a second threaded section are arranged on the outer surface of the core rod; the pipe body is installed on the core rod in a sleeving mode, makes contact with the head convex body of the core rod and is limited by the head convex body; the blind rivet body is installed on the core rod in a sleeving mode and provided with a groove capable of being matched with the drive nut and a bushing body thread capable of being engaged with the first threaded section, and the edge of a blind rivet body tail cone part extends to the interior of the pipe body; the drive nut is installed on the core rod in a sleeving mode, provided with a drive thread capable of being engaged with the second threaded section and further provided with stripes matched with the groove; the bushing is installed on the core rod in a sleeving mode and comprises a bushing tail cone part extending to the interior of the pipe body, a bushing body part and a bushing head. The blind rivet with the bushing interference function and the controllable neck-breaking groove has good fatigue property and anti-loosening property.

Description

technical field [0001] The invention belongs to the technical field of fastener design and manufacture, and in particular relates to a blind rivet with bushing interference and controllable neck breaking groove. Background technique [0002] Nowadays, in aviation and aerospace vehicles, due to the strict control of their own weight, in order to reduce weight, many composite materials are used as body materials, and often the installation space is small, and workers cannot successfully install them. In this case, blind rivets, which can be used for one-sided riveting installation, are usually used to realize the installation of composite materials and aluminum alloy structures. [0003] During installation, maintenance, flight, especially take-off and landing, aerospace vehicles will inevitably receive shocks from the external environment such as airflow. In order to ensure the safety of aerospace vehicles, fasteners are required to have good Excellent fatigue and anti-loose...

AI Technical Summary

Problems solved by technology

The existing blind rivets are only pressed on one side with the connected part, and are prone to loosening during frequent vibrations, and for the blind hole surface (after the traditional blind rivet is installed, the connected part and the blind rivet are deformed and formed The side of the bulge that is in contact with each other is opposite to the other side) The connected parts with a small inclination angle are often difficult to install, or they are easy to loosen and fall off after installation

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