| 摘要 |
A method of laser welding two resin members (1,11) includes the steps of: providing a first (1) and a second (11) resin member each having a joining surface; forming a ridge (3) with a length on the joining surface of one of the first (1) and second (11) resin members, the ridge (3) including a base portion (3a) and a tip portion (3b) that has smaller width and expansion rate in width than those of the base portion (3a); placing one of the first (1) and second (11) resin members on the other so that the joining surfaces of the first (1) and second (11) resin members face each other with the ridge (3) interposed therebetween; pressing one of the first (1) and second (11) resin members against the other so as to completely crush the tip portion (3b) of the ridge (3); and irradiating the base portion (3a) of the ridge (3) with a laser beam while continuously pressing one of the first (1) and second (11) resin members against the other. |
