| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a fastening structure for a member preventing loosening of a part of screw or the like due to vibration or the like. SOLUTION: Each tapping screw 7 is arranged in only one region P1 partitioned by an O ring and a line S crossing with the center thereof. Consequently, a working point (center point of O ring) of elastic force of the O ring pressing up a fixed part 4 of an air flow meter 1 is come off from a fulcrum (line Q connecting each tapping screw 7) of the fixed part 4. As a result, the fixed part 4 tends to rotate with the line Q connecting each tapping screw 7 serving as the center, and force in the direction of rotation is applied to the tapping screw 7, so as to make a thread of each tapping screw 7 and a screw groove in a cylinder part 5 of an intake pipe 2 are brought into pressure contact with each other. In this way, each tapping screw 7 is prevented from loosening even when vibration is generated in the air flow meter 1 and the intake pipe 2.</p> |
