The present disclosure provides a connection terminal and a wire harness that make it possible to suppress reductions in the reliability of connection to a mating terminal. A wire harness 10 that includes an electric wire 20 that has a core wire 21 and an insulating coating 22 that coats the outer circumference of the core wire 21, a connection terminal 30 that is electrically connected to the core wire 21 as exposed from the insulating coating 22, and a cylindrical shrink tube 70 that covers the connection 60 between the core wire 21 and the connection terminal 30. The connection terminal 30 includes an electric wire connection part 31 that is electrically connected to the core wire 21 of the electrical wire 20, a terminal connection part 50 that is to be connected to a mating terminal, and an intermediate linking part 40 that is between the electric wire connection part 31 and the terminal connection part 50 and links the electric wire connection part 31 and the terminal connection part 50. The shrink tube 70 includes a heat-shrink tube 71 and an adhesive 72 that is formed on an inner circumferential surface of the heat-shrink tube 71. The intermediate linking part 40 has grooves 42 that are formed in upper and lower surfaces of a portion that is exposed from the heatshrink tube 71.

The present disclosure provides a connection terminal and a wire harness that make it possible to suppress reductions in the reliability of connection to a mating terminal. A wire harness 10 that includes an electric wire 20 that has a core wire 21 and an insulating coating 22 that coats the outer circumference of the core wire 21, a connection terminal 30 that is electrically connected to the core wire 21 as exposed from the insulating coating 22, and a cylindrical shrink tube 70 that covers the connection 60 between the core wire 21 and the connection terminal 30. The connection terminal 30 includes an electric wire connection part 31 that is electrically connected to the core wire 21 of the electrical wire 20, a terminal connection part 50 that is to be connected to a mating terminal, and an intermediate linking part 40 that is between the electric wire connection part 31 and the terminal connection part 50 and links the electric wire connection part 31 and the terminal connection part 50. The shrink tube 70 includes a heat-shrink tube 71 and an adhesive 72 that is formed on an inner circumferential surface of the heat-shrink tube 71. The intermediate linking part 40 has grooves 42 that are formed in upper and lower surfaces of a portion that is exposed from the heatshrink tube 71.

A battery mounted on a vehicle, the battery including a battery case having an electrically conductive material and configured to be attached to a body of the vehicle so as to electrically connect to the body of the vehicle. The battery case includes a plus terminal to which an electrical conductor is connected to supply electric power to electrical equipment on-board the vehicle, a minus terminal, a ground member that is attached to the minus terminal so as to electrically connect the minus terminal and the battery case, and a plus terminal cover that covers the plus terminal. In a state where the ground member is attached to the minus terminal, the ground member abuts the plus terminal cover so as to restrict a movement of the plus terminal cover from exposing the plus terminal.

A battery mounted on a vehicle, the battery including a battery case having an electrically conductive material and configured to be attached to a body of the vehicle so as to electrically connect to the body of the vehicle. The battery case includes a plus terminal to which an electrical conductor is connected to supply electric power to electrical equipment on-board the vehicle, a minus terminal, a ground member that is attached to the minus terminal so as to electrically connect the minus terminal and the battery case, and a plus terminal cover that covers the plus terminal. In a state where the ground member is attached to the minus terminal, the ground member abuts the plus terminal cover so as to restrict a movement of the plus terminal cover from exposing the plus terminal.

A structure for connecting an aluminum cable and a terminal includes an aluminum cable and a terminal. The aluminum cable includes a cable core. The cable core is constructed with a cable welding portion. The terminal is welded to the cable welding portion. A nominal cross-sectional area of the cable core is M, and a welding area S between the cable welding portion and the terminal meets 5*M≤S≤6*M.

There is provided an electric connection part including: a nut made of a metal, the nut being used for fixing a conductor; and a housing made of a resin, the housing having a press-fit groove into which the nut is press-fitted. The housing includes: a rib that protrudes from an inner side surface of the press-fit groove and extends along a press-fitting direction in which the nut is press-fitted into the press-fit groove, such that the rib presses the nut to be in contact with the nut; and a recess that is disposed on an extension line in which the rib extends, the recess being recessed in the press-fitting direction.

An electrical connection component includes a conductor, and a housing into which the conductor is press-fitted. The housing includes a press-fitted portion having a hollow shape and into which the conductor is press-fitted in a press-fitting direction, and a restriction portion provided at a position different from a position of the press-fitted portion, the restriction portion restricting at least a part of the conductor from being displaced in a direction different from the press-fitting direction from a time point when press-fitting of the conductor into the press-fitted portion is started to a time point when the press-fitting is completed.

A busbar is placed on an anvil, and a core wire of a cable is placed on the busbar. While the core wire is pressed onto the busbar using a horn chip, ultrasonic vibration is given to the core wire to join the core wire to the busbar. The horn chip has two flat portions and a recessed portion located between the flat portions. When the core wire is pressed onto the busbar using the horn chip, each of the flat portions and the busbar sandwich a part of the core wire therebetween while the recessed portion and the busbar put a remaining part of the core wire therebetween. Each of the sandwiched parts of the core wire does not reach an outer end of the corresponding flat portion to leave a space between the corresponding flat portion and the busbar.

A busbar is placed on an anvil, and a core wire of a cable is placed on the busbar. While the core wire is pressed onto the busbar using a horn chip, ultrasonic vibration is given to the core wire to join the core wire to the busbar. The horn chip has two flat portions and a recessed portion located between the flat portions. When the core wire is pressed onto the busbar using the horn chip, each of the flat portions and the busbar sandwich a part of the core wire therebetween while the recessed portion and the busbar put a remaining part of the core wire therebetween. Each of the sandwiched parts of the core wire does not reach an outer end of the corresponding flat portion to leave a space between the corresponding flat portion and the busbar.

A terminal block includes a lower bus bar and an upper bus bar that overlap each other at overlap portions and an insulating middle cover disposed between the overlap portion of the lower bus bar and the overlap portion of the upper bus bar. The lower bus bar and the upper bus bar are provided with their respective ones of first to fourth terminals exposed from the middle cover, at positions different from the overlap portions and the first to fourth terminals are disposed at positions radially spaced apart from the overlap portions.