Patent ID: 8668458
Filing Date: 2014-03-11
Classification: F04D,F05D

Abstract:
1. A fan comprising: a hub part; a blade part including a plurality of blades extending radially from the hub part and a vibration-absorbing boss provided at the hub part; and, wherein the vibration-boss includes a first boss member having a bore for insertion of a rotating shaft of a motor, a second boss member configured to surround the first boss member, the hub part being formed at an outer periphery of the second boss member, and a vibration-absorbing member provided between the first boss member and the second boss member to absorb vibration due to rotation of the motor, wherein the second boss member includes a body portion disposed adjacent to the vibration-absorbing member and a protruding portion configured to extend radially from the body portion and downward to define a groove around the body portion, wherein the first and second boss members are injection molded with a plastic material, wherein the vibration-absorbing member is injection molded between the first boss member and the second boss member with a thermoplastic elastomer, and wherein a portion of the hub part and the blade part are injection molded by inserting the vibration-absorbing member.