Abstract: A scissor gear oil supplying structure includes: a scissor gear that is provided on an outer the circumference of a tip end portion of a shaft; a first oil passage; a second oil passage that extends from the first oil passage in the radial direction; an extension hole that is opened at the front end surface of the shaft; a female screw that is formed in the first oil passage on the rear side of the second oil passage; a rotating member; and a bolt that is inserted into the extension hole and the first oil passage to fasten the rotating member to the shaft and is screwed into the female screw, in which lubricating oil is guided from the first oil passage to the second oil passage along a gap between thread grooves of the female screw and thread ridges of the bolt.

Abstract: Provided is a grounding structure for an internal combustion engine, including a resinous body 2 configured to be attached to an engine body 7 and having a recessed portion 6 formed on a side thereof facing the engine body 7; a nut portion 13 integrally provided in the body 2, wherein the nut portion 13 includes a first end portion 13a opened into the recessed portion 6 and is made of a conductive material; and an oil pressure switch 5 configured to be attached to a second end portion 13b of the nut portion 13; and a conductive spring 16 arranged inside the recessed portion 6, wherein the conductive spring 16 is attached to the first end portion 13a of the nut portion 13 and is pressed against the engine body 7.

Abstract: A scissor gear oil supplying structure includes: a scissor gear that is provided on an outer the circumference of a tip end portion of a shaft; a first oil passage; a second oil passage that extends from the first oil passage in the radial direction; an extension hole that is opened at the front end surface of the shaft; a female screw that is formed in the first oil passage on the rear side of the second oil passage; a rotating member; and a bolt that is inserted into the extension hole and the first oil passage to fasten the rotating member to the shaft and is screwed into the female screw, in which lubricating oil is guided from the first oil passage to the second oil passage along a gap between thread grooves of the female screw and thread ridges of the bolt.

Abstract: An oil level detecting device (1) includes: a tube insertion hole (60) which is provided in a crank case (30) upwardly and communicates with an oil chamber (50); a guide tube (70) which is inserted and fixed in the tube insertion hole (60); an oil level gauge (80) which is inserted into the guide tube (70) to be detachable from above; a partition (35) which is formed in the crank case (30) positioned between the oil chamber (50) and the tube insertion hole (60); and a through hole (90) which passes through the partition (35) and allows the oil chamber (50) to communicate with the tube insertion hole (60).

Abstract: Provided is a grounding structure for an internal combustion engine, including a resinous body 2 configured to be attached to an engine body 7 and having a recessed portion 6 formed on a side thereof facing the engine body 7; a nut portion 13 integrally provided in the body 2, wherein the nut portion 13 includes a first end portion 13a opened into the recessed portion 6 and is made of a conductive material; and an oil pressure switch 5 configured to be attached to a second end portion 13b of the nut portion 13; and a conductive spring 16 arranged inside the recessed portion 6, wherein the conductive spring 16 is attached to the first end portion 13a of the nut portion 13 and is pressed against the engine body 7.