Grounding structure for internal combustion engine

Patent metadata

Field	Value
Publication number	US-10415441-B2
Application number	US-201615775355-A
Country	US
Kind code	B2
Filing date	Nov 9, 2016
Priority date	Nov 12, 2015
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

Provided is a grounding structure for an internal combustion engine, including a resinous body 2 configured to be fastened to an engine body 7 via a bolt 8 , an electric component 5 attached to the body 2 , and a conductive member 16 provided to electrically connect the electric component 5 to the bolt 8 in order to ground the electric component 5 to the engine body 7.

First claim

The invention claimed is:

1. A grounding structure for an internal combustion engine, comprising:
a resinous body configured to be fastened to an engine body by a bolt;
an electric component attached to the body; and
a conductive member electrically connecting the electric component to the bolt in order to ground the electric component to the engine body,
wherein the electric component has a conduction surface portion configured to face the body while being spaced therefrom when the electric component is attached to the body, and
wherein the conductive member has a spring portion configured to be provided in a compressed state between the body and the conduction surface portion.

2. The grounding structure according to claim 1 , wherein the electric component is an oil pressure switch configured to detect an oil pressure of an oil passage formed in the body.

3. The grounding structure according to claim 1 , wherein the spring portion is formed by folding back one end portion of a metal plate extending in one direction.

4. The grounding structure according to claim 1 ,
wherein the body has a nut portion,
wherein the electric component has a threaded portion to be fastened to the nut portion, and
wherein the spring portion is formed in a two-pronged shape to position the threaded portion therebetween.

5. The grounding structure according to claim 1 , wherein the conductive member has a fastened portion configured to be fastened to the body in an aligned state by the bolt.

6. The grounding structure according to claim 1 ,
wherein the electric component comprises:
a threaded portion; and
a conduction surface portion configured to face the body while being spaced therefrom when the electric component is attached to the body,

wherein the body comprises:
a bolt hole configured to allow the bolt to be fastened therein; and
a nut portion formed at a location spaced apart from the bolt hole, the threaded portion being screwed in the nut portion,

wherein the conductive member comprises:
a spring portion having a cut-out portion and formed by folding back one end portion of the conductive member; and
a fastened portion having an insertion portion on the other end portion of the conductive member, the bolt being inserted through the insertion portion,

wherein the spring portion is configured to be provided in a compressed state between the body and the conduction surface portion in a state where the threaded portion is inserted through the cut-out portion, so that the spring portion is electrically connected to the conduction surface portion, and
wherein the fastened portion is electrically connected to the engine body via the bolt by the bolt being inserted through the insertion portion and the bolt hole and being fastened to the engine body.

7. The grounding structure according to claim 6 , wherein the nut portion is provided at a location spaced radially apart from the bolt hole.

8. The grounding structure according to claim 6 , wherein the nut portion has a center axis substantially parallel to an axis of the bolt hole.

Assignees

• Isuzu Motors Ltd

Inventors

• SUEOKA Daisuke
• Mizukami Naoki
• Maeda Takaya
• Matsunaga Tsutomu

Classifications

• B60R16/02 Primary

  electric {constitutive elements} · CPC title

• F02B77/00

  Component parts, details or accessories, not otherwise provided for · CPC title

• F01M11/0004

  Oilsumps · CPC title

• H01R4/64

  Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail · CPC title

• F01M11/10

  Indicating devices; Other safety devices · CPC title