The present invention relates to a powered surfboard having a stepped hull shape, and more specifically, relates to a powered surfboard having a stepped hull shape which improves propulsion efficiency in navigation. According to the present invention, the powered surfboard comprises: a main body unit which includes a front body portion having a mounting groove formed at a bottom side thereof and having the left and right widths narrowed toward the front, and a rear body portion, connected to a rear portion of the front body, having the left and right widths narrowed toward the rear; an extension body unit of which a front end part is hinged to the front body to be inserted into the mounting groove and a rear end part is selectively lowered to form a step protruded downward from the bottom side of the main body; and an elevating and lowering adjusting means including a guide protrusion provided on one of the extended body portion and the main body portion to control the lift width of the extended body portion and a guide groove portion, provided on the other of the extended body portion and the main body portion, extending in the vertical direction to guide the guide protrusion to be inserted.
항행시 추진효율이 향상되도록, 본 발명은 전방으로 갈수록 좌우 폭이 협소화되되 하면부에 장착홈이 형성된 포어바디부와, 상기 포어바디부의 후방에 연결되되 후방으로 갈수록 좌우 폭이 협소화되는 에프터바디부를 포함하는 메인몸체부; 전단부가 상기 포어바디부에 힌지 연결되어 상기 장착홈에 삽입되되, 후단부가 선택적으로 하강되어 상기 메인몸체부의 하면부로부터 하측으로 돌출된 단차를 형성하는 확장몸체부; 및 상기 확장몸체부의 승강폭을 조절하도록, 상기 확장몸체부 및 상기 메인몸체부 중 하나에 구비된 가이드돌기와, 상기 확장몸체부 및 상기 메인몸체부 중 다른 하나에 구비되되 상기 가이드돌기가 삽입되어 안내되도록 상하방향으로 확장된 가이드홈부를 포함하는 승강조절수단을 포함하는 단차형 선형을 갖는 동력추진 서핑보드를 제공한다.
powered surfboard having stepped hull form
단차형 선형을 갖는 동력추진 서핑보드
2017-01-18
Patent
Electronic Resource
Korean
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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