Sumitomo Wiring Systems, Limited

The Furukawa Electric Co., Ltd.

Koji Yonezu

Manabu Matsumoto

Yoshimi Uchida

Shin Hasegawa

Akihiro Fuseya

Hirokazu Shimazaki

A grommet is formed having a funnel shaped portion and a tubular portion linked to a small diameter end portion of the funnel shaped portion. The grommet is inserted to an aperture of a car body panel after a wire harness is passed through and attached to the funnel shaped portion and the tubular portion, and a body latch groove provided on the external circumferential surface of the funnel shaped portion is latched to the car body panel. An extended tubular portion is provided that projects from the tubular portion, and extends inside the funnel shaped portion. A plurality of ribs is provided on an external circumferential surface of the extended tubular portion. The ribs include type one ribs having grooves on both surfaces of an element linking the rib to the extended tubular portion, and a type two rib having no groove.

Grommet and forming method for the grommet

An electrical connecting box suitable to widely-ranging temperature conditions from high temperature to low temperature inside the engine room of a vehicle is described, having a printed circuit boardand a first protecting memberand a second protecting memberhousing the printed circuit board in a sandwich state. In this electrical connecting box an extended portionbeing a part of electrical parts is formed upon a board surfaceon the side of the first protecting member of the printed circuit board. Additionally, first pillar portionsand a second pillar portionare formed upon the inside surface of the first protecting member facing one side of the board surfaces, and a tipand a tipof these pillar portions, according to bending of the first protecting member, can be in either a contacted state or a spaced state with respect to the board surfaceor, alternatively, a projecting bodyfixed to the board surface. When the first pillar portions are contacting the one side of the board surfaces, there is a gap between the extended portion and the inside surface of the first protecting member such that they do not interfere with each other.

Electrical connecting box and method for protecting printed circuit board and mounted parts inside the electrical connecting box

Growing community of inventors

Okazaki, Japan

Koji Yonezu