PROBLEM TO BE SOLVED: To provide a grommet that is mounted in a through hole in a track shape and that improves cut-off performance between an inner peripheral edge of the through hole and a bottom surface of an annular groove of the grommet.SOLUTION: A grommet 20 comprises a cylinder part and a mounting part 30 having an annular groove, in which an inner peripheral edge of a through hole can be fitted, formed at an outer peripheral part. A bottom surface 42 of the annular groove is formed in a track shape having a pair of linear parts 42a and a pair of arcuate parts 42b which are formed arcuately to be convex outward and connect both one-side ends and both the other-side ends of the pair of linear parts 42a respectively, and when a shape obtained by cutting the mounting part 30 with a plane orthogonal to a center axis thereof and passing the annular groove is projected on a peripheral edge of the through hole 18 of a panel 16, an overlap width of a part, overlapping with the peripheral edge of the through hole 18, of the mounting part 30 more on an inner peripheral side than the bottom surface 42 of the annular groove gradually increases from centers to ends of the pair of arcuate parts 42b and is larger at the pair of linear parts 42a than in the centers of the pair of arcuate parts 42b.SELECTED DRAWING: Figure 3
【課題】トラック形状の貫通孔に装着されるグロメットにおいて、貫通孔の内周縁部とグロメットの環状溝の底面との間の止水性の向上を図ることを目的とする。【解決手段】グロメット20は、筒部と、外周部に貫通孔の内周縁部を嵌め込み可能な環状溝が形成された装着部30を備える。環状溝の底面42が、一対の直線部42aと、外向きに凸となる弧状に形成され、一対の直線部42aの一方側両端及び他方側両端のそれぞれを繋ぐ一対の弧状部42bとを有するトラック形状に形成され、装着部30をその中心軸に対して直交しかつ環状溝を通る平面で切断した形状を、パネル16の貫通孔18の周縁部に投影した場合において、貫通孔18の周縁部に対する、装着部30のうちの環状溝の底面42よりも内周側部分の重複幅が、一対の弧状部42bの中央から端部に向うに従って徐々に大きくなり、かつ、一対の弧状部42bの中央よりも一対の直線部42aで大きい。【選択図】図3
GROMMET AND ELECTRIC WIRE WITH GROMMET
グロメット及びグロメット付電線
2016-06-23
Patent
Electronic Resource
Japanese
IPC: | H02G INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES , Verlegen oder Installieren elektrischer Kabel oder Leitungen, Verlegen oder Installieren kombinierter optischer und elektrischer Kabel oder Leitungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / F16L PIPES , Rohre / H01B CABLES , Kabel |