Grommet and grommet attachment structure
Provided is a grommet and a grommet attachment structure configured to prevent a foreign object from entering. The grommet is externally mounted to a bundle of wires, and to a through hole formed in a panel disposed between a waterproof region and a non-waterproof region, the grommet includes a body portion fitted to the through hole; a waterproof-side protruding portion protrudes from the body portion to the waterproof region side; and a non-waterproof-side protruding portion protrudes from the body portion to the non-waterproof region side. The non-waterproof-side protruding portion includes a tubular portion surrounding the bundle of wires, and a projecting piece portion disposed along a portion of an outer circumference of the bundle of wires.
1. A grommet that is to be externally mounted to a bundle of wires, and to be attached to a through hole formed in a panel disposed between a waterproof region and a non-waterproof region, the grommet comprising:
a body portion having a waterproof-side portion and a non-waterproof side portion and a groove portion disposed between the waterproof-side portion and the non-waterproof side portion, wherein the body portion is fitted to the through hole and the panel engages the groove portion;
a waterproof-side protruding portion that protrudes from the body portion to the waterproof region side; and
a non-waterproof-side protruding portion that protrudes from the body portion to the non-waterproof region side, wherein
the non-waterproof-side protruding portion includes a tubular portion that surrounds the bundle of wires, and a projecting piece portion that is disposed along a portion of an outer circumference of the bundle of wires; and
a belt-shaped member that is wound around the bundle of wires, the projecting piece portion, and the tubular portion so as to bring the non-waterproof-side protruding portion into close contact with the bundle of wires.
2. The grommet according to claim 1 , wherein
a plurality of the projecting piece portions are provided with a slit disposed therebetween, the slit being formed in a protruding end portion of the non-waterproof-side protruding portion.
3. The grommet according to claim 1 , wherein
the tubular portion includes an easily bendable bending portion that has alternating projections and depressions provided successively in an axial direction.
4. The grommet according to claim 3 , wherein
a plurality of the projecting piece portions are provided with a slit disposed therebetween, the slit being formed in a protruding end portion of the non-waterproof-side protruding portion, and
the tubular portion includes, between the slit and the bending portion, a straight pipe portion that has a flat outer circumferential surface with no projections and depressions.
5. A grommet attachment structure in which a grommet is attached to a through hole formed in a panel disposed between a waterproof region and a non-waterproof region, the attachment structure comprising:
the grommet according claim 1 ;
a bundle of wires passed through the grommet.