| 摘要 |
The present invention relates to a blind rivet nut. Blind rivet nuts are used to connect items to surfaces of materials, such as roof racks to automobiles, and have proven to be extremely reliable. However, difficulties occur when attempting to connect to several layers of materials or when material thickness increase, as it has been necessary to increase hole size in order to ensure hole registration and this can cause sealing problems. The invention provides a blind rivet nut capable of being used through one or several layers with improved grip capability and improved sealing ability preventing ingress of moisture. Lines of weakness in the form of grooves are formed in a portion of the body of the blind rivet nut so that material deforms selectively thereby improving the grip of the blind rivet nut. A flange has an annular recess that enables an O-ring seal to deform more efficiently, giving a larger 'footprint' than was previously possible thereby enhancing sealing.
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