US 12,437,903 B2
Grommet and wire harness
Hirotaka Kiyota, Makinohara (JP)
Assigned to YAZAKI CORPORATION, Tokyo (JP)
Filed by YAZAKI CORPORATION, Tokyo (JP)
Filed on Dec. 27, 2023, as Appl. No. 18/398,131.
Application 18/398,131 is a continuation of application No. PCT/JP2022/041849, filed on Nov. 10, 2022.
Claims priority of application No. 2021-203190 (JP), filed on Dec. 15, 2021.
Prior Publication US 2024/0136091 A1, Apr. 25, 2024
Int. Cl. H01B 17/58 (2006.01)
CPC H01B 17/583 (2013.01) 4 Claims
OG exemplary drawing
 
1. A grommet comprising:
a base member which is formed of an insulating hard resin and through which a wiring member being a conductive member and passing through a through hole of a flat plate portion is inserted;
a waterstop member having an annular shape and assembled to the base member; and
a holding mechanism that holds the base member and the waterstop member assembled with each other onto a peripheral edge of the through hole in the flat plate portion, wherein
the base member includes: a flange having an annular shape and in which an outer peripheral edge having a shape similar to the peripheral edge having an annular shape is disposed to face the peripheral edge with a gap in one hole axial direction of the through hole and the wiring member is inserted through an inside of an inner peripheral edge;
a tubular body that protrudes from the inner peripheral edge of the flange in the one hole axial direction and allows passage of the wiring member inside the body; and a cylindrical body whose cross section orthogonal to a hole axis of the through hole has a shape similar to the peripheral edge, the cylindrical body protruding from the flange in the other hole axial direction of the through hole inside the outer peripheral edge so as to be inserted through the through hole,
the waterstop member includes a first waterstop member and a second waterstop member in an integrated state outside a radial direction, the first waterstop member having an annular shape, formed of the hard resin or a hard resin different from the hard resin having a hardness equivalent to a hardness of the hard resin, and configured to cover an annular wall surface on the one hole axial direction side in the outer peripheral edge of the flange over one circumference in a circumferential direction, the second waterstop member having an annular shape, formed of a soft resin softer than the hard resin and elastically deformable, and configured to be in close contact with at least an outer circumferential surface of the outer peripheral edge of the flange over one circumference in the circumferential direction, and
the second waterstop member has a contact portion having an annular shape and configured to be, in elastically deformed state, in close contact with the peripheral edge over one circumference in the circumferential direction.