Abstract: A power supply apparatus includes: a battery cell stack obtained by stacking a plurality of battery cells; and a cover case surrounding an outside of the battery cell stack, in which a resin is poured between the battery cell stack and the cover case, achieving a waterproof structure of making the battery cell stack waterproof. This allows prevention of water entering from an outside, thereby preventing unintentional electric conduction or corrosion. A gap between the battery cell stack and the cover case is also eliminated to prevent the harmful influence on the battery cell stack due to condensation inside the cover case.

Abstract: A power supply device includes a battery cell stack (5) constructed of a plurality of stacked, rectangular battery cells, and a cooling pipe (60) disposed in a thermally coupled state over one surface of the battery cell stack (5), the cooling pipe (60) being adapted to perform a heat exchange with the battery cell stack (5) by allowing a refrigerant to flow inside the pipe, wherein a plurality of rows of the cooling pipes (60) are spaced apart from each other over the one surface of the battery cell stack (5), and a resin member is placed between the spaced-apart cooling pipes (60) such that the one surface of the battery cell stack (5) is covered in a sealed state.

Abstract: A power supply device includes a battery assembly, a box-shaped cover case, a cooling plate, and a waterproof sheet. The battery assembly includes rectangular battery cells arranged side by side. The cover case has an opening. Exterior surfaces of the battery assembly are covered with surfaces of the cover case other than the opening. The cooling plate is thermally coupled to one surface of the battery assembly through the opening. Coolant flows through the cooling plate whereby transferring heat from the battery assembly to the coolant. The waterproof sheet covers the one surface of the battery assembly. Gaps between the battery assembly and the cover case are filled with a sealing material so that a sealing layer is interposed between them. The waterproof sheet is fastened by the sealing layer.

Abstract: A personal watercraft including a body including a hull and a deck covering the hull from above, an engine room formed in an interior of the body, an engine hood mounted over an opening that is formed on the deck to be located at an upper region of the engine room, the engine hood being configured to open and close the opening, and a tool case mounting portion mounted on a wall surface of the engine hood which faces the engine room, the tool case mounting portion being configured to hold a tool case that accommodates a tool kit for the watercraft.

Abstract: A personal watercraft having an air-water separating structure to communicate the outside of a body of the watercraft with an interior of an engine room, which allows the layout of the interior of an engine room to be designed flexibly, including a body 1 including a hull 2 and a deck 3 covering the hull 2 from above, a water jet pump P configured to eject rearward water sucked from a water intake 17 provided on a bottom surface of the hull 2, an engine room 8 that is formed at a front portion of the body 1 and is configured to accommodate an engine E for driving the water jet pump P, and an engine hood 16 covering a deck opening formed on a region of the deck that is located above the engine room 8, wherein the engine hood 16 is equipped with an air-water separating structure 33 having upper air passages 27 and 28 through which a front space formed in a front portion in the engine hood 16 and outside of the body communicate with each other and a lower air passage 29 through which the front space in the engin

Abstract: A personal watercraft equipped with an engine cooling system and a cleaning system therefore, including a body 1 including a deck 3 and a hull 2, an engine E accommodated in the interior of the body 1, a cooling system configured to cool the engine E using water taken in from outside the body 1, and a flush pipe 39, one end of which is coupled to the cooling system to guide cleaning water to the cooling system, and an opposite end of the cleaning water supply line has an opening that is formed on the deck 3 of the body 1 and is configured to open outward; and a coupling member 40 is attached to the opening to couple the cleaning water supply line to a cleaning water supply source located outside the body.

Abstract: A mounting portion of a water jet pump of a personal watercraft is disclosed. The mounting portion typically includes a tubular pump casing configured to accommodate the impeller, and a pump bracket configured to fasten the pump casing to the body of the watercraft. The pump casing is configured to be mountable to the pump bracket in such a manner that an internal fitting portion of the pump casing is internally fitted to a casing receiving portion of the pump bracket from rearward with a ring-shaped seal element fitted into a groove provided on the pump casing, and an outer peripheral surface of the internal fitting portion and an inner peripheral surface of the casing receiving portion are sealed by the seal element.

Abstract: A personal watercraft having an air-water separating structure to communicate the outside of a body of the watercraft with an interior of an engine room, which allows the layout of the interior of an engine room to be designed flexibly, including a body 1 including a hull 2 and a deck 3 covering the hull 2 from above, a water jet pump P configured to eject rearward water sucked from a water intake 17 provided on a bottom surface of the hull 2, an engine room 8 that is formed at a front portion of the body 1 and is configured to accommodate an engine E for driving the water jet pump P, and an engine hood 16 covering a deck opening formed on a region of the deck that is located above the engine room 8, wherein the engine hood 16 is equipped with an air-water separating structure 33 having upper air passages 27 and 28 through which a front space formed in a front portion in the engine hood 16 and outside of the body communicate with each other and a lower air passage 29 through which the front space in the engin

Abstract: A personal watercraft including a body including a hull and a deck covering the hull from above, an engine room formed in an interior of the body, an engine hood mounted over an opening that is formed on the deck to be located at an upper region of the engine room, the engine hood being configured to open and close the opening, and a tool case mounting portion mounted on a wall surface of the engine hood which faces the engine room, the tool case mounting portion being configured to hold a tool case that accommodates a tool kit for the watercraft.

Abstract: A personal watercraft equipped with an engine cooling system and a cleaning system therefore, including a body 1 including a deck 3 and a hull 2, an engine E accommodated in the interior of the body 1, a cooling system configured to cool the engine E using water taken in from outside the body 1, and a flush pipe 39, one end of which is coupled to the cooling system to guide cleaning water to the cooling system, and an opposite end of the cleaning water supply line has an opening that is formed on the deck 3 of the body 1 and is configured to open outward; and a coupling member 40 is attached to the opening to couple the cleaning water supply line to a cleaning water supply source located outside the body.

Abstract: A steering device of a small watercraft is disclosed. The device includes a steering column oriented substantially in the vertical direction, wherein the steering column includes an upper component and a lower component, the components being coupled together so as to be movable relative to each other in the longitudinal direction thereof, and a fastening device configured to lock the relative movement of the components. One of the components includes an elongated hole which penetrates in the left-and-right direction and is elongated in the vertical direction. The other component includes a protrusion extended in the left-and-right direction so as to be accommodated in the elongated hole and to be guided by the hole in the vertical direction. The components each include a contact surface having a plurality of teeth arranged in the vertical direction, and engage with each other in the front-and-rear direction by engaging the teeth.

Abstract: A mounting portion of a water jet pump of a personal watercraft is disclosed. The mounting portion typically includes a tubular pump casing configured to accommodate the impeller, and a pump bracket configured to fasten the pump casing to the body of the watercraft. The pump casing is configured to be mountable to the pump bracket in such a manner that an internal fitting portion of the pump casing is internally fitted to a casing receiving portion of the pump bracket from rearward with a ring-shaped seal element fitted into a groove provided on the pump casing, and an outer peripheral surface of the internal fitting portion and an inner peripheral surface of the casing receiving portion are sealed by the seal element.

Abstract: A steering device of a small watercraft is disclosed. The device includes a steering column oriented substantially in the vertical direction, wherein the steering column includes an upper component and a lower component, the components being coupled together so as to be movable relative to each other in the longitudinal direction thereof, and a fastening device configured to lock the relative movement of the components. One of the components includes an elongated hole which penetrates in the left-and-right direction and is elongated in the vertical direction. The other component includes a protrusion extended in the left-and-right direction so as to be accommodated in the elongated hole and to be guided by the hole in the vertical direction. The components each include a contact surface having a plurality of teeth arranged in the vertical direction, and engage with each other in the front-and-rear direction by engaging the teeth.