BLIND RIVET AND SEALING STRUCTURE USING SAME

摘要

A blind rivet having sealing and water-tightness features. The blind rivet is fastenable to a member having an opening and includes a rivet body and mandrel. The rivet body has a flange having a large diameter, a taper portion which is adjacent the flange and a sleeve which extends along the axial direction from the taper portion. A hole having a bottom is formed from the surface of the flange to the bottom of the sleeve. The mandrel has a head. The head of the mandrel is disposed at the bottom portion of the hole. A thick portion is formed at a portion of the sleeve, and thus the head is irremovably held in the hole. The mandrel is pulled, the sleeve is enlarged, and a substrate is sealed between the enlarged portion and the flange. A sealing structure using the blind rivet is also provided.

主权项

1. A blind rivet for fastening to a base body having an opening, the blind rivet comprising:
a rivet body having a flange end and a blind end, the rivet body including a flange at the flange end, the flange including a taper with an axially diminishing outer diameter toward the blind end and a sleeve extending in an axial direction from the taper toward the blind end, the sleeve defining a hole and the hole including a bottom disposed toward the blind end; a mandrel having a head and a shaft extending from the head, the shaft having a smaller diameter than the head, and wherein the head is arranged in the hole toward the bottom; the shaft extending from the flange end; an inner surface of the sleeve including a reduced diameter stop portion having a diameter smaller than a head diameter and larger than a shaft diameter, the reduced diameter portion positioned adjacent to the head and between the head and the flange, the reduced diameter portion and the bottom preventing removal of the head from the rivet body.