| 摘要 |
<p>PURPOSE:To prevent the detachment of a member or the lowering of anti-radio- fault characteristics due to vibration or heat stress by mounting an axial flow bypass passage constituting member on the upstream side of an air passage and using a conductive material as the material quality of the cover of a hot wire element holding bypass passage. CONSTITUTION:The cover 6 of a bypass passage is inserted in a main passage 1 on the upstream side of a body 5 and the holder 10 of a control module 8 is further inserted in the tubular part 16 of the cover 6 through the insertion hole 5a of the body 5 and the cover 6 is clamped to a bypass bridge 14 on the upstream side of the body 5 by two screws 7. Since the cover 6 and the screws 7 are pressed to the bridge by the air flowing through the passage 1 from the upstream part to the downstream part, the falling thereof is prevented. A cover 6A is formed from a conductive material and electrically connected to the metal base 11 of the module 8 through a holder sleeve 12 made of the conductive material in the same way. By this constitution, earth potential is held and a hot wire element 3 and an electricity-sensitive resistance element 4 are shielded from a radio wave.</p> |
