| 摘要 |
<p>The present invention is to provide a synthetic weld body which sectional shape of a passage to a bore can be an ideal shape by welding two synthetic members. The edge at the passage side of the rising boundary line 78a-1, 78a-2, 78b-1, 78b-2, 78c-1, 78c-2, 78d-1, 78d-2 which is the boundary between the top end connecting face and the mount connecting face of the middle member 70 is disposed at or in the vicinity of a contact point of the tangent line of the ridge line 84 of the mount connecting face at the passage side with the inner edge of the top end connecting face 74a, 74b, 74c, 74d at the bore 50a, 50b, 50c, 50d side. The rising boundary line 78a-1, 78a-2, 78b-1, 78b-2, 78c-1, 78c-2, 78d-1, 78d-2 including the edge at the passage side is parallel to the standard direction for vibration.</p> |
