In a grommet 1 including a grommet main body 11 in which an electrical wire insertion hole 12 through which an electric wire is inserted is provided and in which an annular seal portion 13 which abuts against an opening edge 33 of a panel mounting hole 32 is provided, the annular seal portion 13 includes an inner side annular supporting portion 17 , an outer side annular supporting portion 18 integrally formed with the grommet main body 11 at the outer circumference of the inner side annular supporting portions 17 , and an arc-shaped abutting portion 16 formed so as arcuately to connect tips 17 a and 18 a of the inner side annular supporting portion 17 and the outer side annular supporting portion 18 and abuts against the opening edge 33 of the panel mounting hole 32.
1. A grommet which includes:
a grommet main body in which an electrical wire insertion hole through which an electric wire is inserted is provided; and in which
an annular seal portion which abuts against an opening edge of a panel mounting hole is provided,
wherein the annular seal portion includes an inner side annular supporting portion, an outer side annular supporting portion integrally formed with the grommet main body at an outer circumference of the inner side annular supporting portion, and an arc-shaped abutting portion formed so as accurately to connect tips of the inner side annular supporting portion and the outer side annular supporting portion and abuts against the opening edge of the panel mounting hole,
wherein after the grommet main body is mounted to the panel mounting hole, the arc-shaped abutting portion is linearly bent and deformed so as to abut against the panel,
wherein the annular seal portion includes an inner space surrounded by the inner side annular supporting portion, the outer side annular supporting portion, and the arc-shaped abutting portion, and
wherein a grommet inner to which the grommet is attached is not exposed to the inner space.
2. The grommet according to claim 1 , wherein an inner connection portion to which a grommet inner having an insertion hole communicated with the electric wire insertion hole is connected is provided in the grommet main body, a flange portion of the grommet inner abuts against the inner connection portion, and a rear end side of the inner side annular supporting portion abuts against the flange portion.
3. The grommet according claim 1 , wherein the inner side annular supporting portion and the outer side annular supporting portion have a stiffness which can press the arc-shaped abutting portion in a close contact state on the opening edge in the state where the arc-shaped abutting portion abuts against the opening edge of the panel mounting hole, and the arc-shaped abutting portion has a stiffness and can be deformed and stuck in the state of abutting against the opening edge.