Sumitomo Wiring Systems, Limited

Yukitaka Saito

Tatsuya Sumida

Koji Kasai

Nobuchika Kobayashi

Noriko Kobayashi

Yuuji Saka

Shinshu Kato

Naofumi Yamatake

A busbar is arranged along a clearance, which is a dead space between a plurality of relay mounting portions and a fuse mounting portion in a block main body. The busbar is provided with narrow fusible links and tabs for connection with relays and fuses. The tabs are formed by bending portions of the busbar at positions downstream of the fusible links and are inserted through terminal holes in the relay mounting portions and the fuse mounting portion. The fusible links are set to be fusible at 30 amperes or higher, and a power supply is connected with the relays via the fusible link portions.

Electrical connection box and method for producing it

An electrical junction box for a vehicle has a connector circuit having bus bars fixed on an insulation substrate to connect to electrical connectors, a fuse circuit having bus bars fixed on an insulation substrate to connect to fuses, and a relay circuit having third bus bars fixed on an insulation substrate to connect to relays in use. In assembling the box, in order to avoid generation of stress and allow for dislocation of the circuits, the method includes the steps of: (i) joining upstanding welding portions of bus bars of the connector circuit and the fuse or relay circuit by arranging them adjacent each other and welding them together; and (ii) after step (i), joining laterally projecting welding portions of bus bars of the connector circuit and the fuse or relay circuits by welding them together when superimposed one on the other.

Junction box

An electrical junction box for a vehicle has a connector module providing connection to an electrical connector, a fuse module providing connection to a plurality of fuses, and a relay module providing connection to a plurality of relays. The connector module has a plurality of insulation substrates stacked one on another to form a layered assembly having a pair of main faces and a plurality of sides, and bus bars on the insulation substrates providing first welding tabs which are aligned with one another in at least one linear row adjacent one of the sides of the layered assembly. The fuse module has one or more insulation substrates and bus bars providing projecting second welding tabs confronting the welding tabs of the connector module. The relay module has an insulation substrate and bus bars providing third welding tabs also confronting the welding tabs of the connector module. The second and third welding tabs are welded to the first tabs to effect connection of the circuits.

Electrical junction box for a vehicle

An electrical junction box for a vehicle has a connector module for connection in use to electrical connectors, a fuse module carrying fuses, and a relay module connected to relays. The connector module includes circuit plates stacked one on another to form a layered assembly which is mounted vertically. The fuse module has a circuit plate and is mounted at a lower opening of a casing so that it is accessible for insertion and removal of fuses. The circuit plate of the fuse module is perpendicular to the main faces of the layered assembly. A compact construction permitting easy access to the fuses is obtained.

An electrical connection box has a first casing part in which is mounted a bus bar laminate, and a second casing part in which a wiring substrate is accommodated. To achieve accurate alignment of projecting tabs of the bus bar laminate with connectors of the wiring substrate during connection of the casing parts, the first casing part has projections and the wiring substrate has recesses which mutually engage before the tabs enter the connectors. Direct alignment is achieved, increasing reliability of the product.

Electrical connection box

An electrical junction box for a vehicle has a casing and in the casing a connector circuit having first bus bars fixed on a connector circuit substrate to connect to electrical connectors, a fuse circuit with second bus bars on a fuse circuit substrate, discrete from the connector circuit, to connect to fuses, and a relay circuit having third bus bars on a relay circuit substrate, discrete from the connector circuit, to connect to relays. The first bus bars have welding portions welded to and the bus bars of one of the fuse and relay circuits have welding portions opposed thereto. At the adjacent pairs of these welded connections an insulating partitioning member is interposed between the welded connections so as to prevent contact between them.

A wire box including a main box having an outer surface with a water outlet therein. A wall is provided around the periphery of the outlet and projects outwardly from the surface in a direction substantially perpendicular thereto. There is a closure on the end of the wall furthest from the main box. There is at least one opening in the wall which communicates between the outlet and the exterior of the box. It is more desirable if there is a protective rib adjacent the opening and spaced apart therefrom a distant sufficient to allow water to run out of the opening. The form of the closure may be widely varied so that there is no direct path into and out of the main box for water to follow.

Growing community of inventors

Yokkaichi, Japan

Yukitaka Saito