A grommet includes an outer body and an inner body. The outer body, is formed with a wire insertion hole through which a wire is inserted, and has a panel fitting portion at a circumferential portion thereof. The panel fitting portion fits in a first panel hole having a first diameter. The inner body, is attached to the outer body, and has a locking fitting portion at a circumferential portion thereof. The locking fitting portion fits in a second panel hole having a second diameter smaller than the first diameter and locks an inner edge portion of the second panel hole.
1. A grommet comprising:
an outer body, formed with a holding portion having a wire insertion hole through which a wire is inserted, and having a panel fitting portion at a circumferential portion of the holding portion, the panel fitting portion configured to fit in a first panel having a first hole with a first diameter to which the grommet is mounted; and
an inner body, attached to a back end of the holding portion of the outer body, and having a wire insertion part aligned with the wire insertion hole of the outer body along an axis of the wire insertion hole, and having a locking fitting portion at a circumferential portion of the inner body, the locking fitting portion configured to fit in a second panel having a second hole with a second diameter smaller than the first diameter and to lock an inner edge portion of the second hole.
2. The grommet as set forth in claim 1 , wherein
the outer body includes a panel abutment portion configured to be brought into abutment with the inner edge portion of the second hole in a state where the locking fitting portion fits in the second hole.
3. The grommet as set forth in claim 1 , wherein
the locking fitting portion includes a lock arm having:
an arm part having flexibility and projected from the circumferential portion of the inner body; and
a locking stepped part provided at a distal end of the arm part and configured to be engaged with the inner edge portion of the second hole, and
wherein the lock arm is provided on the circumferential portion of the inner body so as to extend along the full circumference thereof.
4. The grommet as set forth in claim 3 , wherein
the inner body includes:
a cylindrical portion communicating with the wire insertion hole and through which the wire is inserted; and
a connecting flange portion provided at one side of the cylindrical portion and engaged with the outer body to connect the inner body with the outer body, and
wherein the lock arm is provided on an outer circumference of the cylindrical portion.
5. The grommet as set forth in claim 1 , wherein
the outer body and the inner body are formed of a rubber.
6. The grommet as set forth in claim 1 , wherein
the holding portion is substantially cylindrical, and
wherein a thickness of the cylindrical holding portion is gradually reduced towards one end of the wire insertion hole.
7. The grommet as set forth in claim 1 , wherein
the holding portion is substantially cylindrical, and
wherein a plurality of ring portions are formed on an inner face of the cylindrical holding portion to diminish a diameter of the wire insertion hole.