Abstract: A wire harness including: a wire bundle that includes a plurality of wires, each wire of the plurality of wires includes a conductor and an insulating covering that covers an outer circumference of the conductor, and each wire of the plurality of wires includes an exposed portion at which the conductor is exposed from the insulating covering; a splice body; and a waterproofing cover, wherein: at the splice body, the exposed portions of the wires forming the wire bundle are bonded to each other, a portion of the wire bundle that is adjacent to the splice body and at which the conductors are covered by the insulating coverings is a covered region, the waterproofing cover integrally covers the splice body and the covered region with a resin material.

Abstract: A wire harness including: a first wire bundle that includes a plurality of wires; a second wire bundle that includes fewer wires than the first wire bundle; a splice body; and a waterproofing cover, wherein: the wires of the first wire bundle and the second wire bundle each include a conductor and an insulating covering that covers an outer circumference of the conductor, and each include an exposed portion at which the conductor is exposed from the insulating covering, at the splice body, the exposed portions of the first wire bundle and the exposed portions of the second wire bundle are bonded, and the waterproofing cover integrally covers the splice body, the outer surfaces of the insulating coverings of the first wire bundle, and the outer surfaces of the insulating covering of the second wire bundle with a resin material.

Abstract: It is aimed to provide a wiring harness excellent in the deep curability of a part covered with a water blocking material. In a wiring harness in which an exposed conductor part of an insulated wire is covered with a water blocking material, the water blocking material is a cured product of a photocurable composition containing a photocurable resin and a photopolymerization initiator, and a content of the photopolymerization initiator in the photocurable composition is 0.2 parts by mass or more and 2.0 parts by mass or less based on 100 parts by mass of the photocurable resin.

Abstract: It is aimed to provide a wiring harness excellent in the waterproof performance of a part covered with a water blocking member also under a high temperature environment, a low temperature environment and a cold heat environment. In a wiring harness (10) in which an exposed conductor part (7) of an insulated wire (1, 2, 3) is covered with a water blocking member (8), the water blocking member (8) is a cured product of a composition containing a urethane (meth)acrylate and has two or more glass transition points.

Abstract: A wire harness including: a wire that includes a conductor and an insulating covering that covers an outer circumference of the conductor, and that includes an exposed portion at which the conductor is exposed from the insulating covering; and a waterproofing cover that integrally covers the exposed portion and an outer surface of the insulating covering with a resin material, wherein a covering length, which is a length of a region in which the waterproofing cover covers the insulating covering, is greater than or equal to a length at which a maximum thermal stress at an edge of the waterproofing cover that is in contact with the insulating covering is equal to an adhesive strength of the resin material with respect to the insulating covering.

Abstract: A wire harness including: a wire bundle that includes a plurality of wires, each wire of the plurality of wires includes a conductor and an insulating covering that covers an outer circumference of the conductor, and each wire of the plurality of wires includes an exposed portion at which the conductor is exposed from the insulating covering; a splice body; and a waterproofing cover, wherein: at the splice body, the exposed portions of the wires forming the wire bundle are bonded to each other, a portion of the wire bundle that is adjacent to the splice body and at which the conductors are covered by the insulating coverings is a covered region, the waterproofing cover integrally covers the splice body and the covered region with a resin material.

Abstract: A wire harness including: a first wire bundle that includes a plurality of wires; a second wire bundle that includes fewer wires than the first wire bundle; a splice body; and a waterproofing cover, wherein: the wires of the first wire bundle and the second wire bundle each include a conductor and an insulating covering that covers an outer circumference of the conductor, and each include an exposed portion at which the conductor is exposed from the insulating covering, at the splice body, the exposed portions of the first wire bundle and the exposed portions of the second wire bundle are bonded, and the waterproofing cover integrally covers the splice body, the outer surfaces of the insulating coverings of the first wire bundle, and the outer surfaces of the insulating covering of the second wire bundle with a resin material.

Abstract: A wire harness including: a wire that includes a conductor and an insulating covering that covers an outer circumference of the conductor, and that includes an exposed portion at which the conductor is exposed from the insulating covering; and a waterproofing cover that integrally covers the exposed portion and an outer surface of the insulating covering with a resin material, wherein a covering length, which is a length of a region in which the waterproofing cover covers the insulating covering, is greater than or equal to a length at which a maximum thermal stress at an edge of the waterproofing cover that is in contact with the insulating covering is equal to an adhesive strength of the resin material with respect to the insulating covering.