| 摘要 |
A hinge has a stationary leaf, at least one barrel, a pivoting leaf and a pivot pin. The at least one barrel is formed on the stationary leaf and each has an inner surface, a pivot pin hole, a gap and an inner lubricant groove. The pivot pin hole is defined coaxially through the at least one barrel. The gap communicates with the pivot pin hole. The inner lubricant groove is defined in the inner surface. The pivot pin is protrudes from the pivoting bracket, is mounted rotatably in the pin hole in each of the at least one barrel and has multiple annular lubricant grooves communicating with the inner lubricant groove in each of the at least one barrel. The inner lubricant groove and the annular lubricant grooves hold sufficient lubricant to provide superior lubrication between the pivot pin hole and pivot pin.
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