Routing members connection structure

1. A routing members connection structure which electrically connects a long first trunk routing member which is routed in a vehicle and can transmit power and a first branch routing member which is routed in the vehicle, can transmit power, and branches off from the first trunk routing member, wherein:

each of the first trunk routing member and the first branch routing member has a conductor and an insulator that is formed on an outer circumferential surface of the conductor;

the first trunk routing member has a post-shaped first fastening member that is made of a metal and extends outward from a first branching portion where the conductor is exposed without being covered with the insulator; and

the conductor of the first trunk routing member and the conductor of the first branch routing member are electrically connected to each other via the first fastening member.

2. The routing members connection structure according to claim 1 , further comprising a long second trunk routing member which is routed in the vehicle so as to be laid on the first trunk routing member and can transmit power and a second branch routing member which is routed in the vehicle, can transmit power, and branches off from the second trunk routing member, the routing members connection structure further characterized in:

the second trunk routing member has a conductor and an insulator that is interposed at least between the conductor of the second trunk routing member and the conductor of the first trunk routing member;

the second branch routing member has a conductor and an insulator that is formed on an outer circumferential surface of the conductor;

the first trunk routing member has a through-hole that penetrates through the first trunk routing member in a lamination direction of the first trunk routing member and the second trunk routing member;

the second trunk routing member has a post-shaped second fastening member that is made of a metal and extends outward from a second branching portion where the conductor is exposed without being covered with the insulator toward the side of the first trunk routing member;

the second fastening member is inserted through the through-hole past one opening thereof facing the second trunk routing member and a tip-side portion of the second fastening member projects from the other opening of the through-hole; and

the conductor of the second trunk routing member and the conductor of the second branch routing member are electrically connected to each other via the tip-side portion of the second fastening member.

3. The routing members connection structure according to claim 1 , further comprising a long second trunk routing member which is routed in the vehicle so as to be laid on the first trunk routing member and can transmit power and a second branch routing member which is routed in the vehicle, can transmit power, and branches off from the second trunk routing member, wherein:

the second trunk routing member has a conductor and an insulator that is interposed at least between the conductor of the second trunk routing member and the conductor of the first trunk routing member;

the second branch routing member has a conductor and an insulator that is formed on an outer circumferential surface of the conductor;

the second trunk routing member has, in a region in a longitudinal direction of the first trunk routing member and the second trunk routing member, a non-laminated portion where at least one of the first trunk routing member and the second trunk routing member is curved in a width direction that is perpendicular to the longitudinal direction and a lamination direction of the first trunk routing member and the second trunk routing member and hence the second trunk routing member is not laid on and is spaced from the first trunk routing member;

the second trunk routing member has a post-shaped second fastening member that is made of a metal and extends outward from a second branching portion that is part of the non-laminated portion and where the conductor is exposed without being covered with the insulator; and

the conductor of the second trunk routing member and the conductor of the second branch routing member are electrically connected to each other via the second fastening member.

4. The routing members connection structure according to claim 1 , further comprising a long second trunk routing member which is routed in the vehicle so as to be laid on the first trunk routing member and can transmit power and a second branch routing member which is routed in the vehicle, can transmit power, and branches off from the second trunk routing member, wherein:

the second trunk routing member has a conductor and an insulator that is interposed at least between the conductor of the second trunk routing member and the conductor of the first trunk routing member;

the second branch routing member has a conductor and an insulator that is formed on an outer circumferential surface of the conductor;

the first trunk routing member has a cut that extends from a side edge on one side in a width direction that is perpendicular to a longitudinal direction and a lamination direction of the first trunk routing member and the second trunk routing member toward the other side edge in the width direction;

the second trunk routing member has an exposed portion that coextends with the cut and hence is exposed without being covered with the first trunk routing member;

the second trunk routing member has a post-shaped second fastening member that is made of a metal and extends outward toward the side of the first trunk routing member from a second branching portion that is part of the exposed portion and where the conductor is exposed without being covered with the insulator; and

the conductor of the second trunk routing member and the conductor of the second branch routing member are electrically connected to each other via the second fastening member.

5. The routing members connection structure according to claim 1 , further comprising a power branching box which is disposed in the vehicle so as to cover a connection portion of the first trunk routing member and the first branch routing member and houses a board on which an electric circuit is formed, wherein:

the first fastening member is connected to a first portion of the board and the conductor of the first branch routing member is connected to a second portion that is different from the first portion; and

the conductor of the first trunk routing member and the conductor of the first branch routing member are electrically connected to each other via the first fastening member and the electric circuit of the board.