Yazaki Corporation

Tarou Inoue

Makoto Nakayama

Masahiro Kanamaru

An electrical junction box includes a box body provided with a first groove; an attachment bracket provided with a second groove; and a lower cover provided attached to the bottom surface of the box body. When the attachment bracket is properly mounted on the box body, the first and second grooves are arranged to form a single continuous third groove. A protrusion is provided on the lower cover and fits to the third groove.

Electrical junction box

In a sidewall of a connector frame, a cantilevered lock arm is provided. A lower end of the lock arm is connected to the sidewall with a curved supporting unit interposed therebetween. The lock arm extends upward from the supporting unit with a space. The supporting unit has a slit to increase the flexibility of the lock arm. An engagement protrusion is provided on the lock arm. Moreover, a fitting sidewall is provided in a box body, and a lock wall having a lock protrusion is provided outside the fitting sidewall. The lock protrusion includes a downward-facing engagement surface. A mold hole used in molding the engagement surface is formed between the fitting sidewall and lock wall. An abutment surface is provided at an upper end of the fitting sidewall and contacted with the supporting unit to close communication between the mold hole and the slit.

Lock mechanism

A wire harness leading-out opening is provided at a junction between an electric connection box and a bottom surface cover which constitute an electric connection box. A cylindrical wire harness leading-out guide is provided on the periphery of the wire harness leading-out opening, and is formed in a way that the both circumferential ends of a half-cylindrical body formed on the electric connection box and a half-cylindrical body formed on the bottom surface cover are coupled to each other. In the inner circumference of a circumferential junction between the peripheral walls of the two half-cylindrical bodies, a concave portion is provided to accommodate a loose portion of an armoring member wrapped around the outer circumference of the wire harness.

Wire harness leading-out port structure of electric connection box

An electrical junction box is provided to reduce looseness of a cover. The electrical junction box includes a box body and the cover to be slidably mounted on a lateral side of the box body from above. The cover has a front wall and a pair of left and right sidewalls connected to both left and right ends of the front wall to overlap with left and right connecting walls of the box body, providing a U-shaped cross section. The electrical junction box further includes first slide guides provided on both of the cover and the box body and second slide guides provided on both of the cover and the box body. The second slide guides are positioned in areas where the left and right sidewalls of the cover overlapping with the left and right connecting walls of the box body. Further, the second slide guides are closer to the front wall of the cover being mounted to the box body than the first slide guides.

Electrical junction box and assembling method thereof

An electrical junction box facilitates a worker's wiring of a wire harness without using a superfluous component and allows the workability in assembling the electrical junction box as well as that in disassembling to be improved. The electrical junction box includes a box body and a cover to be mounted to the box body after wiring wire harnesses about the box body. The box body has wiring grooves shaped to have U-shaped cross sections and arranged on its exterior surface to accommodate the wire harnesses, which have been drawn out of the box body through its one side and further led from an upper part of the one side downwardly. Left and right sidewalls defining each groove are provided, at their leading ends, with temporary locking parts restricting slipping of the wire harness out of the wiring groove. The cover is provided with restricting walls (sidewalls, rib) restricting outward deflection of the left and right sidewalls. In mounting the cover to the box body, the restricting walls are inserted to the outside of the sidewalls and between the adjoining sidewalls. The restricting walls have withstanding parts formed to prevent the temporary locking parts from being deflected outside.

Growing community of inventors

Shizuoka-ken, Japan

Tarou Inoue