Patent ID: 7128038

Claim:
An intake device for an internal combustion engine comprising: a throttle body forming an intake passage; a throttle valve arranged within the intake passage; a pipe member connected to the throttle body, wherein the pipe member forms a communication passage communicating with the intake passage; an engagement device provided between the throttle body and the pipe member, wherein the engaging device includes at least one engagement protrusion and at least one engagement recess, so that detachment of the throttle body and the pipe member from each other is resisted when the engagement protrusion and the engagement recess are engaged with each other, wherein the throttle body and the pipe member respectively have a first connection end portion and a second connection end portion, and the first and second connection end portions are fitted with each other in the axial direction; and at least one resilient seal member for radially effecting sealing between the first connection end portion and the second connection end portion, wherein the resilient seal member is a modified ring having a seal portion and a pressurizing portion formed integrally with each other; wherein the seal portion serves to effect sealing in the radial direction and the pressurizing portion serves to urge the throttle body and the pipe member in disconnecting axial directions relative to each other.