Grommet with coupling portions
A grommet includes: a first coupling portion that couples a first tubular portion and a first base portion to each other; and a second coupling portion that couples a second tubular portion and a second base portion to each other. The first coupling portion and the second coupling portion are provided with a space therebetween in the axial direction of the grommet. The first coupling portion includes a first flexible portion. The second coupling portion includes a second flexible portion. The first flexible portion and the second flexible portion are configured to bend so as to absorb an inclination of a wire harness with respect to a vehicle body panel. The first coupling portion and the second coupling portion provide a first sound insulation space therebetween.
1 . A grommet comprising:
a main body that includes a seal portion configured to come into contact with a panel including an attachment hole to which the grommet is attached and through which a wire harness is passed;
a tubular portion into which the wire harness is inserted, the tubular portion including a first tubular portion, a second tubular portion and a third tubular portion in contact with an outer circumferential surface of the first tubular portion; and
a plurality of coupling portions that are provided with a space therebetween in an axial direction of the grommet, and that include a first coupling portion coupling the main body and the first tubular portion, a second coupling portion coupling the main body and the second tubular portion, and a third coupling portion coupling the main body and the third tubular portion,
wherein at least one of the first, second and third coupling portions includes a flexible portion configured to bend so as to absorb an inclination of the wire harness with respect to the panel, and
the first and second coupling portions provide a first sound insulation space therebetween, and the first and third coupling portions provide a second sound insulation space therebetween.
2 . The grommet according to claim 1 ,
wherein the flexible portion includes a first thin portion that has a thinner wall thickness than the main body.
3 . The grommet according to claim 1 ,
wherein the flexible portion includes a bent portion that has a bent shape protruding in the axial direction.
4 . The grommet according to claim 1 ,
wherein the flexible portion includes a bellows portion that has a tubular shape coaxial with the tubular portion.
5 . The grommet according to claim 1 ,
wherein the flexible portion is provided so as to be entirely continuous in a circumferential direction thereof.
6 . The grommet according to claim 1 ,
wherein the first tubular portion, the second tubular portion and the third tubular portion are separate parts, and
the first coupling portion, the second coupling portion, and the third coupling portion are separate parts.
7 . The grommet according to claim 1 ,
wherein the main body includes a first base portion and a second base portion that are separate parts,
the first coupling portion couples the first base portion and the first tubular portion,
the second coupling portion couples the second base portion and the second tubular portion,
the third coupling portion couples the first base portion and the third tubular portion,
the first coupling portion, the first base portion and the first tubular portion are integrally formed, and
the second coupling portion, the second base portion and the second tubular portion are integrally formed.
8 . A grommet comprising:
a main body that includes a seal portion configured to come into contact with a panel including an attachment hole to which the grommet is attached and through which a wire harness is passed;
a tubular portion into which the wire harness is inserted; and
a pair of coupling portions that are provided with a space therebetween in an axial direction of the grommet, and that each of the pair of coupling portions couple the main body and the tubular portion to each other,
wherein at least one of the pair of coupling portions includes a flexible portion configured to bend so as to absorb an inclination of the wire harness with respect to the panel,
the pair of coupling portions provide a sound insulation space therebetween,
the main body includes a first member that is coupled to the tubular portion by one of the pair of coupling portions, and a second member that is coupled to the tubular portion by an other of the pair of coupling portions,
the first member includes the seal portion,
the second member includes a covering portion configured to cover an insertion hole of a sound insulation member provided on one side surface of the panel, and
the flexible portion is provided at least in the other coupling portion that couples the second member to the tubular portion.
9 . The grommet according to claim 8 ,
wherein the flexible portion formed in the other coupling portion that couples the second member to the tubular portion includes a second thin portion that is thinner than the covering portion.