US 12,025,051 B1Granted

Belt cover structure for internal combustion engine

AssigneeHonda Motor Co., Ltd.

InventorsKoichiro Asame, Osamu Yoda, Tadashi Kanamori

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Abstract

A belt cover for an internal combustion engine is provided, and the belt cover efficiently discharges water from a drain hole and has good sealing performance. A water pump 30, which is disposed on one side surface of a cylinder block CB, and which includes a drain hole 35, an oil pump case OP, which covers the inside of a timing belt TB, and a lower cover 9, which covers the outside of the timing belt TB are included. The oil pump case OP and the lower cover 9 are fixed with each other through a seal member 40, and constitute a lower case 90. A guide rib 91 and a discharge port 92 are formed inside the lower case 90, the guide rib 91 being for guiding drained water from the drain hole 35, while separating from the timing belt TB, the discharge port 92 being for discharging the drained water from the lower case 90 at a bottom end of the lower case 90, and the drained water from the drain hole 35 is guided by the guide rib 91 toward the discharge port 92.

Claims6

Dependent claims

A belt cover structure for an internal combustion engine, the belt cover structure being configured to accommodate at least a part of a timing belt disposed on one side surface of an internal combustion engine body, the belt cover structure comprising:

a water pump disposed on the one side surface, and including a drain hole for draining water;
an inner cover member that covers the timing belt on a side closer to the internal combustion engine than the timing belt;
and
an outer cover member that covers the timing belt on a side farther from the internal combustion engine than the timing belt, wherein
the inner cover member and the outer cover member are fixed with each other through a seal member to constitute a case,
a guide rib and a discharge port are formed inside the case, the guide rib being for guiding drained water from the drain hole to a lower side of the case, while separating the drained water from the drain hole from the timing belt, the discharge port being for discharging the drained water from the case at a bottom end of the case, and
the drained water from the drain hole is guided by the guide rib toward the discharge port.

4 more elements

Dependencies are inferred from the claim text.