Oil level gauge mounting structure

An oil level gauge mounting structure for an oil level gauge that measures a lubricating oil surface position in an oil pan of an internal combustion engine, comprising:

• the oil level gauge including a grip portion of the oil level gauge which has a finger insertion hole into which a finger of an operating person is configured to be inserted, and a dipstick that extends from the grip portion and that measures the lubricating oil surface position in the oil pan;
• a dipstick insertion hole provided in an upper portion of the internal combustion engine which accepts insertion of the dipstick;
• a peripheral wall provided in the upper portion of the internal combustion engine which at least partially defines an insertion recess portion that receives the grip portion by surrounding the grip portion, except from a finger insertion direction for the finger insertion hole, when the dipstick is inserted in the insertion hole;
• and
• an opening portion provided in the upper portion of the internal combustion engine which is open in the finger insertion direction for the finger insertion hole,
• wherein the insertion recess portion has such a shape that the insertion recess portion is capable of receiving the grip portion in such a facing direction that the finger insertion direction is substantially aligned with a direction of the opening portion but is incapable of receiving the grip portion in any other facing direction,
• wherein the grip portion includes a base portion that is coupled to the dipstick and that is to face a bottom surface of the insertion recess portion and a finger hook member coupled, via a connecting wall, to a counter dipstick insertion direction side of the base portion that is opposite to a dipstick insertion direction side that faces in an insertion direction for the dipstick,
• wherein at least one of the base portion and the finger hook member is provided with a protruded-shape portion that protrudes into the opening portion when the grip portion is received in the insertion recess portion, and
• wherein the opening portion is narrowed by extension walls that extend from portions of the peripheral wall that are adjacent to the opening portion in such extending directions that the extension walls approach each other.

An oil level gauge mounting structure comprising:

• an oil level gauge comprising:
• a grip portion having a finger insertion hole which defines a finger insertion direction for the finger insertion hole and into which a finger of an operating person is configured to be inserted from the finger insertion direction for the finger insertion hole;
• and
• a dipstick extending from the grip portion to measure a lubricating oil surface position in an oil pan of an internal combustion engine;
• a dipstick insertion hole which is provided in an upper portion of the internal combustion engine and into which the dipstick is inserted;
• a peripheral wall provided in the upper portion of the internal combustion engine, the peripheral wall surrounding the grip portion from directions except the finger insertion direction for the finger insertion hole so as to define an insertion recess portion to receive the grip portion in a state in which the dipstick is inserted in the dipstick insertion hole;
• and
• an opening portion provided in the upper portion of the internal combustion engine, the opening portion being open in the finger insertion direction for the finger insertion hole in the state in which the dipstick is inserted in the dipstick insertion hole, the insertion recess portion having a shape so that the insertion recess portion receives the grip portion in a state in which the grip portion faces a facing direction in which the finger insertion hole is substantially aligned with the opening portion and so that the insertion recess portion prevents receipt of the grip portion in a state in which the finger insertion hole and the opening portion are not substantially aligned.

An oil level gauge mounting structure comprising:

• an oil level gauge comprising:
• a grip portion having a finger insertion hole which defines a finger insertion direction for the finger insertion hole and into which a finger of an operating person is configured to be inserted from the finger insertion direction for the finger insertion hole;
• and
• a dipstick extending from the grip portion to measure a lubricating oil surface position in an oil pan of an internal combustion engine;
• a dipstick insertion hole which is provided in an upper portion of the internal combustion engine and into which the dipstick is inserted;
• a peripheral wall provided in the upper portion of the internal combustion engine, the peripheral wall surrounding the grip portion from directions except the finger insertion direction for the finger insertion hole so as to define an insertion recess portion to receive the grip portion in a state in which the dipstick is inserted in the dipstick insertion hole;
• and
• an opening portion provided in the upper portion of the internal combustion engine, the opening portion being open in the finger insertion direction for the finger insertion hole in the state in which the dipstick is inserted in the dipstick insertion hole, the insertion recess portion having a shape so that the insertion recess portion receives the grip portion in a state in which the grip portion faces a facing direction in which the finger insertion direction for the finger insertion hole is substantially same as a direction of the opening portion and so that the insertion recess portion does not receive the grip portion in a state in which the grip portion faces another facing direction in which the finger insertion direction for the finger insertion hole is not substantially same as the direction of the opening portion,
• wherein the grip portion includes a base portion that is coupled to the dipstick and that is to face a bottom surface of the insertion recess portion and a finger hook member coupled, via a connecting wall, to a counter dipstick insertion direction side of the base portion that is opposite to a dipstick insertion direction side that faces in an insertion direction for the dipstick insertion hole,
• wherein at least one of the base portion and the finger hook member is provided with a protruded-shape portion that protrudes into the opening portion in a state in which the grip portion is received in the insertion recess portion, and
• wherein the opening portion is narrowed by extension walls that extend from portions of the peripheral wall that are adjacent to the opening portion in such extending directions that the extension walls approach each other.