JPH072398Y2 - Outboard motor flushing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a water washing device for an outboard motor.

(Prior Art) An outboard motor generally includes an engine 2 on an upper portion of a drive shaft housing 1 as shown in a side view in FIGS. 3 and 4.
Is mounted and covered with an engine cover 3, a gear case 4 is connected to a lower end of the drive shaft housing 1, and a propeller 6 is fixed to a propeller shaft 5 projecting from a rear end of the gear case 4. Is transmitted to the propeller shaft 5 through the power transmission mechanism in the drive shaft housing 1 and the gear case 4, and drives the propeller 6 to propel the hull.

In this outboard motor, the clamp bracket 7 pivotally supported by the outboard motor is hooked on the tail of the hull, and the clamp screw 8 is tightened to be attached to the hull.

In the above outboard motor, it is necessary to wash with water in order to prevent seawater and salt from adhering to the engine cooling water supply water pump 9 and the cooling water passage in the outboard motor.

Therefore, a plug hole 10 communicating with the pump case of the water pump 9 is provided on the side surface of the gear case 4 below the outboard motor, and a plug (not shown) is fastened and plugged in the plug hole 109 during traveling. When cleaning, wash the outboard motor by removing the plug and installing the washing attachment 10a in the plug hole 10 as shown in FIG. 5 and supplying washing water (tap water) through the washing attachment 10a. Has been done.

(Problems to be solved by the invention) However, in the case of the above outboard motor, the plug hole 10 is opened at a right angle to the tail side surface of the gear case 4 and communicates with the cooling water passage. When attaching the water washing attachment 10a to 10 and washing with tap water, tap water does not smoothly flow into the pump case even if it enters the outboard motor from the plug hole 10, and it sucks cooling water during actual running
There is a large amount of water that flows out at 10c or as it is, so it is not possible to obtain a sufficient amount of water for washing. as a result,
There was a problem that special treatment such as closing the water intake port 10c was required when washing with water.

As shown in Fig. 6, there are some outboard motors that do not have a water washing plug hole, but in this type of outboard motor, a specially designed water washing device 10b is attached to the water inlet 10c to perform water washing work. There is an inconvenience that the cleaning water injected from the water suction port 10c cannot be smoothly guided to the water pump 9 because it must be provided or the chamber 10d is formed in the middle.

The present invention is intended to solve the above-mentioned problems of the prior art, and it is possible to efficiently introduce the cleaning water into the outboard motor at the time of washing with water, and the ship does not have a special structure or man-hours. It is intended to provide a water washing device for an external unit.

[Constitution of device]

(Means for Solving the Problems) As a means for solving the problems of the above-mentioned conventional technology, the present invention has an engine mounted on an upper part of a drive shaft housing, and a gear case connected to the lower part of the housing. The rotation is transmitted to the propeller shaft in the gear case through the drive force transmission mechanism in the drive shaft housing and the gear case, the propeller fixed to the propeller shaft is rotated to propel the hull, and the water pump provided above the gear case is also used. In an outboard motor in which a water intake port formed in a gear case below the water pump is in communication with an water absorption passage, a plug hole for mounting a water attachment on the side of the gear case near the water pump is oriented so as to face the water pump. And plug it into the plug hole It is connected to the passage so that it faces the water pump.

(Operation) With the above configuration, when the cleaning water is supplied through the plug hole, it smoothly flows into the water pump, so that it is less likely to flow into the passage side communicating with the water intake port, and the supplied cleaning water is reduced. Most of the water flows into the water pump, and the outboard motor can be washed efficiently and efficiently.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 in which parts common to those in FIG.

FIG. 1 shows the front of the main part of the outboard motor flushing device according to the present invention, and FIG. 2 shows the main part side surface of the outboard motor flushing device partially in section. A water pump 11 is mounted on the upper part of the lower gear case 4, and a plug hole 12 is opened on one side surface of the upper part of the gear case 4 so as to communicate with the pump case 11a of the water pump 11, and an inner periphery thereof is formed. A screw 13 is engraved for screwing a plug or an attachment for washing with water.

In this invention, the plug hole 12 corresponds to the water pump 11
The axis of the gear case 4 is inclined so as to face obliquely downward with respect to the side surface of the gear case 4.

In FIG. 2, reference numeral 14 is a water suction port for sucking cooling water during traveling, and is communicated with a water pump 11 via a water tube 15 which is a water suction passage.

Reference numeral 16 in FIG. 1 denotes a water washing attachment, which is attached to the gear case 4 at an angle θ with respect to the side surface thereof when screwed into the plug hole 12 as shown in the same figure.

Therefore, the plug hole 12 is formed in the gear case 4 with an angle θ with respect to the side surface thereof. Therefore, when the washing attachment 16 is attached to this and tap water is supplied, the water will enter the water pump 11 from diagonally below. It directly flows in a straight line, so that it rarely flows into the passage (water tube) 15 side communicating with the water inlet 14, and most of the supplied tap water can flow into the pump case.

Although the plug hole 12 is provided in the immediate vicinity of the water pump 11 in one embodiment, the present invention is not necessarily limited to this, and may be provided in the middle of the water absorption passage 15, for example, as shown by a chain line in FIG. The plug hole 18 may be provided so as to be directed to the water pump 11 side.

[Effect of device]

As described above, in the present invention, the attachment hole for flushing attachment is provided on the side surface of the gear case near the water pump so as to face the water pump side, and the plug hole is provided in the water absorption passage toward the water pump side. Since they are communicated with each other, by attaching a washing attachment to this plug hole and supplying washing water, the washing water smoothly flows into the water pump, and the amount of water that flows out to the water intake side is greatly reduced. Therefore, the efficiency of use of the washing water is remarkably improved, and no extra work for closing the water intake port is required. Further, since the intended purpose can be achieved only by selecting the drilling angle of the plug hole, it is possible to provide an inexpensive and effective water washing device without requiring a special structure or process. . Furthermore, when the outboard motor is tilted and the hull is retained, by removing the plug of the washing plug hole, the cooling water can be discharged without remaining below the pump case. There are various effects such as the prevention of defects caused by freezing and salt retention.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of an outboard motor flushing device according to the present invention, showing a partial cross-section, and FIG. 2 is a main part of the outboard motor flushing device according to the present invention. Side views, FIGS. 3 and 4 are side views showing a conventional outboard motor and a partial sectional view of a lower portion, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 5 is a sectional view similar to FIG. 1 ... Drive shaft housing, 2 ... Engine,
4 ... Gear case, 5 ... Propeller shaft, 6 ... Propeller, 11 ... Water pump, 12 ... Plug hole, 13 ...
… Screws, 16 …… Attachment for washing.

Claims (2)

[Scope of utility model registration request] 1. An engine is mounted on an upper part of a drive shaft housing, and a gear case is connected to a lower part of the housing, and the rotation of the engine is transmitted to a propeller shaft in the gear case through a drive force transmission mechanism in the drive shaft housing and the gear case. Then, the propeller fixed to the propeller shaft is rotated to propel the hull, and the water pump provided at the upper part of the gear case and the water intake port formed in the gear case below the water pump are connected by a water absorption passage. In the outer machine, a plug hole for mounting a water attachment is provided on the side of the gear case near the water pump so as to face the water pump side, and the plug hole is communicated with the water absorption passage so as to face the water pump side. Rinsing outboard motors Location. 2. A water washing device for an outboard motor according to claim 1, wherein the plug hole is provided at a position closest to the water pump and is inclined obliquely downward with respect to a side surface of the gear case.