Sumitomo Wiring Systems, Limited

Shinshu Kato

Eriko Yuasa

Yuuji Saka

Katsuya Ito

Kouichi Shirouzu

Shuji Yamakawa

Yukitaka Saito

Yasuhiro Kasahara

Shigeru Akoshima

Kouji Kasai

A junction box comprises small size standard boxes. The small size standard box includes a main casing that contains many longitudinal bus bars disposed in parallel with one another at a given interval in distance therein, and male and female coupling portions provided on the outer opposite side surfaces of the main casing. Plural small size standard boxes are juxtaposed together in accordance with different kinds of automobile vehicles by interconnecting the male and female coupling portions successively. A lower casing member is attached to the main casing. The size of the lower casing member depends on the number of the standard boxes to be coupled for a special purpose. The lower casing member is provided with an attachment portion for a vehicle body projecting from the member.

Junction box having a plurality of main casings and connectors designed for use with different types of automobiles

Vehicle having an electrical connection box and electrical connection box for use in the vehicle

An electrical connection box for a vehicle has a low-voltage bus bar and a high voltage bus bar, received in groove structures of a first insulation plate. Each groove structure is defined by a base wall surface on which the bus bar is disposed and a pair of opposed upstanding side wall surfaces. The first insulation plate has a downward recess or through-hole between the groove structures. A second insulation plate superimposed on the first plate has a downward projection received in the recess or through-hole and extending to a lower end which is below the base wall surfaces of the groove structures. The structure inhibits leak currents between the bus bars.

Electrical connection box for a vehicle

An electrical connection box is provided for a vehicle which has a low-voltage battery of maximum output voltage selected from a range of from about 14V to about 28V, and a high-voltage battery of output voltage higher than that of the first battery structure. The electrical connection box has an insulation material of plate-like shape and, embedded in the insulation material, first bus bars connected in use to the first battery and second bus bars connected in use to the second battery so that the first and second bus bars are at different potentials. Connection tabs of the bus bars project out of the insulation material. Risk of leakage currents between the bus bars is thus minimized.

An electrical connection box for use in a vehicle has bus bars in a casing with upstanding connection tabs which are alongside and spaced from each other. Insulation resin embeds the tabs while leaving exposed projecting portions. A connector attached to the casing has a housing containing terminals respectively engaged with the projecting portions of the tabs. The resin material provides a recess located between the tabs and the housing of said connector has a partition wall of insulating material which lies between the terminals and extends into the recess, to prevent leak current between the terminals.

A bus bar is installed on a relay box accommodating relays. An exposed core wire at one end of an input line and an exposed core wire at one end of a bypassing line are crimped to a crimping portion of a first connection terminal. An exposed core wire at one end of an output line and an exposed core wire at the other end of the bypassing line are crimped to a crimping portion of a second connection terminal. The first and second connection terminals are connected with the bus bar by means of a respective screws tightened into the bus bar.

Electrical wiring construction including a bus bar

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.

Wiring box with shielded water outlet

A positioning cylinder to close positioning holes in both the upper and lower casings of a branching junction box so as to prevent dirt and moisture from entering. The positioning cylinder is preferably integral with the upper casing and hollow so as to allow it to fit over a positioning pin employed as a locator during the assembly of the junction box. The positioning cylinder not only closes the holes that are in the upper and lower casing of the junction box, but also stabilizes the busbar substrates that are in the junction box and provides for a more integral and secure junction.

Branching junction box and method for assembly thereof

The male connector used in an electrical junction box employs a guide rib which is disposed perpendicular to the long side of an enclosing rib which encircles the male tab opening. The guide rib, positioned on both long sides of the enclosing rib, guides the tab into the male tab opening in order to prevent damage which occurs when there is misalignment of the tab with the male tab opening. In order to further assist in the realignment of the tab with the male tab opening, the surfaces of the enclosing rib and the guiding rib are sloped towards the male tab opening to allow the tab to be guided into the male tab opening during assembly of the junction box.

Male connection for junction box

A branch joint box includes upper and lower casings of an identical shape which form a casing assembly by overturning one of the upper and lower casings. First connector portions and second connector portions are arranged in a plurality of rows and having first terminal holes and second terminal holes, respectively. Bus bars each have a coupling portion accommodated in the casing assembly and first and second terminal portions extend from opposite sides of the coupling portion, respectively, and project out of the first and second terminal holes, respectively. The upper and lower casings have first and second locking portions engageable with each other and are disposed at one side of the first and second connector portions, respectively. Each of the upper and lower casings has a protrusion formed on one outer side face adjacent to the other side of each of the first and second connector portions such that a pitch from a distal end of the protrusion to a corresponding outermost one of the first and second terminal holes coincides with a pitch from the other outer side face of each of the upper and lower casings to a corresponding outermost one of the first and second terminal holes such that the first and second terminal holes are disposed symmetrically in alignment with each other.

Branch joint box accommodating bus bars and bus bar blank

A connecting box for forming branch circuit comprises two rectangular casing members in the same configuration and a plurality of conductive members. Each casing member comprises a partitioning, a plurality of connector-connecting openings disposed on one side thereof with respect to the partitioning wall, a conductive member-accommodating portion disposed on the other side and a plurality of connection portion-inserting openings formed on the partitioning wall. The two casing members are connected with each other with one of the casing members to constitute a case having the conductive member-accommodating portion in the center portion thereof and the connector-connecting openings on the front and back sides. The conductive members are disposed in the conductive member-accommodating portion so as to project a connecting portion of each conductive member into each of the connector-connecting openings formed on the front and back sides of the case through each connection portion-inserting opening.

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Yokkaichi, Japan

Shinshu Kato