![]() (1) Overview of the product under complaint As a result, NCAC found out the following details. Therefore NCAC conducted a visual check of the fracture cross section of the rivets used for the product under complaint as well as a loading test of the same type product with full solid rivets. Even the original seller didn't have any product equal to the product under complaint. However, the center heard from the original seller of the chair that the rivets with a hollow end had been replaced by full solid rivets. The rivets used for the product under complaint had a hollow end. The shaft is inserted into a drilled hole of objects to be fastened, and the tail (the end opposite to the head) is swaged so that the objects are fastened.Īfter receiving the above inquiry, the local consumer center (hereinafter called "center") requested NCAC for a product test. 1 JIS B0101 "Screw threads and fasteners - Vocabulary": A rivet consists of a smooth cylindrical shaft and a head on one end.I want the chair manufacturer to pay the repair cost. The wood floor of my rented house was damaged by the impact of the collapsed chair. I would like to request for an investigation to see if there's any safety problem in the product. The product label attached to the chair did not indicate a withstand load. Rivets 1 on the right and left sides were disconnected at the hollow portion which had been swaged at the end. ![]() Observing the broken chair, I found out that rivets on the right and left sides fixing the seat support frame to the pipes had burst. I landed hard on my backside with the seat, and my body was thrown on the floor. When I was sitting on the folding chair for 30 minutes or so, I suddenly heard sounds like glass breaking when the chair legs fully spread and the chair collapsed. Details of the inquiryįour years ago, I bought a folding desk and a folding chair in a set. It was inferred that the rivets had insufficient strength. Then, the person landed hard on the backside and the floor was also damaged. When a person was sitting on a folding chair, rivets fixing the metal seat support frame fractured and the chair collapsed. Folding chair legs spread and the seat fell down
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