Patent ID: 8203079

Claim:
A grommet that sheathes a wire harness for a motor vehicle, the grommet comprising: a small diameter tubular section provided at one end of the grommet and capable of being inserted into a through-hole in the motor vehicle; a tapered tubular section including a slant wall extending from the small diameter tubular section, the slant wall includes: a pair of opposed longer sides; a pair of opposed shorter sides; and corner slant sides provided between the pair of opposed longer sides and the pair of opposed shorter sides; and a large diameter tubular section extending through a vehicle body locking recess to a larger end part of the tapered tubular section, the larger diameter tubular section includes: a pair of opposed longer sides; a pair of opposed shorter sides; and cutout-corner slant sides between the pair of opposed longer sides and the pair of opposed shorter sides; and four round corners, wherein: the tapered tubular section is capable of being deformed inward in order for the vehicle body locking recess to be engaged with the through-hole; the vehicle body locking recess is formed into a configuration corresponding to the through-hole; and a whole surface of the slant wall of each cutout-corner slant side being set to correspond to each of the four round corners of the through-hole in a vehicle body panel, a depth from a distal end of each of the corner slant sides to a bottom of a groove in the vehicle body locking recess being set to: i) be the same as depths of a groove of each of the pair of opposed longer sides and the pair of opposed shorter sides of the slant wall at opposite ends of each of the corner slant sides, ii) being set to be deepest, and iii) being set to become gradually shallower toward a central part of the cutout-corner slant sides, an engaging margin of a central part of the slant wall with a periphery around the through-hole in the vehicle body panel being set to be 30% to 60% of an engaging margin of the pair of opposed longer sides and pair of opposed shorter sides with the through-hole.