JPS58218497A - Cowling device of outboard engine - Google Patents

Abstract

PURPOSE:To eliminate the necessity for providing a separate engine and effectively use a space of a ship by the elimination, by providing a mounting seat of a pump, which can be driven by an outboard engine, to a cowling of the outboard engine. CONSTITUTION:An outboard engine comprises an engine 1 in an upper part and a lower unit 2 turnably mounted to a swivel bracket 4 in the stern 3 and is steered by a steering handle 5. A cam shaft 10 interlocked through a timing blet 8 and a pulley 9 is provided to a crankshaft 7 of the engine 1, and a shaft 12A of a pump 12 is disengageably connected by mechanical clutches 11A, 11B in the end of said shaft 10. This cowling 13 has a hole 14, to which the shaft 12A can be inserted, in a top outside face, and a pump mounting seat 15 is provided to the periphery of the hole 14. While a suction pipe 16A and a delivery pipe 16B of seawater or the like are provided to an external surface of the cowling 13. In this way, the necessity for providing a separate engine is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cowling device for an outboard motor to which a pump driven by the engine of the outboard motor can be attached.

Generally speaking, ships equipped with outboard motors must be equipped with pumps for various types of work, but there is often not enough space on board to install a pump, and motors other than the outboard motor There was a problem in that the cost was increased by placing the driving pump separately.

Therefore, the invention of Japanese Patent Publication No. 38-13265 concerning a marine propulsion device that also serves as a pump and a propulsion device for a marine vessel was made by focusing on the point that it is only possible to use an outboard motor propulsion device and a pump at the same time. Special Publication 1977-21 concerning an outboard motor that can also be used as a pump
The invention of No. 853 is further developed by a general-purpose device in which a pump unit housing an impeller in a pump casing is attached to the propeller shaft of an outboard motor in exchange for the propeller, so that the impeller can be rotated by the propeller shaft. Although an invention related to a pump has been made in Japanese Patent Application Laid-open No. 56-146091, each of the above inventions has the disadvantage that in order to operate it as a pump, it is necessary to remove and install it each time, making the operation cumbersome.

1. Utility Model Publication No. 47-35035 was devised regarding a pump device for a propulsion machine that was able to drive a pump installed within the propulsion machine frame using the prime mover for driving the propulsion machine, but in this case as well. Since the pump is separately installed in the cowling of the outboard motor, it takes up a lot of space for installing the pump, and it is also inconvenient to handle.

Therefore, the present invention has been made to solve the above-mentioned conventional problems, and by attaching a pump to the cowling of the outboard motor and using the outboard motor as the drive source for the pump, a separately installed engine can be used. The purpose is to make it unnecessary.

That is, the present invention is constructed by providing the cowling of an outboard motor with a seat for mounting a pump that can be driven by the engine of the outboard motor.

Embodiments to which the outboard motor cowling device of the present invention is applied will be described below with reference to the drawings, and the same parts in each embodiment will be explained using part numbers.

First, the outboard motor shown in Embodiment 1 in FIG.
The lower unit 2 is rotatably attached to a swivel bracket 4 attached to the stern 3 of the ship, and is steered by a steering wheel 5. However, a mechanical clutch device consisting of a driving side clutch 11A and a passive side clutch 11B connects the crankshaft 7 of the engine 1 to the shaft end of the camshaft 1o of the camshaft drive pulley 9, which is interlocked with the timing belt 8. Twelve pump shafts 12A are removably connected.

The pump 1 has a hole 14 on the outer surface of the top of the cowling 13 of this outboard motor into which the pump shaft 12A and its couplings can be inserted, and a boss portion of the bolt Okawa around the hole 14.
2 is provided with a seat 15 for mounting.

It is desirable that this hole 14 has a margin somewhat larger than the outer diameter of the joints to allow for centering work between the camshaft 10 and the pump shaft 12A. The seat 15 is used to cover the hole 14 with a blind board.

Further, as described above, the intake pipe 12 driven by the engine 1 of this outboard motor is provided with a suction pipe 16A and a discharge pipe 16B, which are provided on the outer surface of the cowling 16 to suck in seawater or fresh water W. When the pump 12 is not in use, the clutch device is turned off to become a neutral state, and when the clutch device is turned on, the pump 12 is driven by the movement of the engine 1, discharging seawater or fresh water onto the ship. It is designed to supply

Next, in Embodiment 2 of FIG. 2, a seat 15 for mounting a pump 12 driven by a camshaft 10 of an outboard engine 1 having substantially the same configuration and function as Embodiment 2 described above is attached to a cowling 13. However, in this second embodiment,
A portion of the cowling 16 that covers the engine 1 of the outboard motor,
Alternatively, the entire structure may have a double wall structure, and its interior includes a suction water passage 17A for sucking seawater or fresh water W into this pump 12, and a discharge water passage 17B for discharging seawater or fresh water W from this pump 12 and supplying it onto the ship. It is designed to supply seawater or fresh water W onto the ship from the water outlet 18, thereby increasing the rigidity of the cowling 13, and
By filling the cowling 16 with seawater or fresh water W, the resonance of the engine 1 noise is eliminated, which is unprecedented.
l Can provide excellent soundproofing effects.

Furthermore, since the cooling water is passed through the top of the cowling 16, it is possible to block solar heat, etc., prevent the air temperature within the cowling 16 from rising, and prevent deterioration of engine performance.

Therefore, by applying the present invention and attaching the pump to the cowling of the outboard motor and using the outboard motor's engine as the drive source for the pump, a separate engine is not required, and the space on the ship can be made more efficient. It has the advantage of being usable.

Furthermore, when the pump is not in use, there is no need to remove the pump from the outboard motor, which improves the ease of handling the pump, and furthermore, the pump can be operated even when the propeller is being propelled. In Embodiments 1 and 2 of the present invention, the pump is driven by a camshaft, but the same applies if it is driven by a crankshaft.

Note that the present invention can be effectively applied to the cowling of an outboard motor.

[Brief explanation of the drawing]

1 is a sectional view of a main part of a cowling device for an outboard motor according to a first embodiment of the present invention, and FIG. 2 is a sectional view of a main part of a cowling device for an outboard motor according to a second embodiment of the present invention. 1... Engine, 7... Crankshaft, 10... Camshaft, 12... Pump, 12A... Pump shaft, 16...
・Cowling, 15... seat, 16A... suction piping,
16B...Discharge piping, 17A...Suction water passage, 17
B...Discharge water passage. Agent: Patent Attorney Makoto Ogawa − Patent Attorney: Ken Noguchi Patent Attorney: Kazuhiko Saishita

Claims (1)

[Claims] 1. A cowling device for an outboard motor, characterized in that the cowling of the outboard motor is provided with a seat for mounting a pump that can be driven by the engine of the outboard motor.