JP2544816Y2 - Structure of low remaining oil pan for marine engine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a low residual oil pan for a marine engine.

[0002]

2. Description of the Related Art Conventionally, in a marine engine, as shown in FIG. 2, the bottom of an oil pan 1A and the bottom A of a ship are close to each other. It is not possible to provide a bottomed drain nut as disclosed in Japanese Patent No. 15532. Therefore, oil is pumped up by an oil drain pump (not shown) or the like. However, in order to make the engine as compact as possible, it is not preferable to provide the drain hole 2A at a position lower than the bottom surface of the oil pan 1B by the height H as shown in FIG. Therefore, as shown in FIG. 4, a drain hole 2 is provided on the bottom side surface of the oil pan 1C, an eye connector 4 is attached via an eye bolt 3, a pumping pipe 5 is connected to the eye connector 4, and oil is supplied from the eye bolt 3. I try to pump it up.

In the above structure, the oil is pumped and the oil level L is changed to the level L on the upper surface of the inner diameter of the eyebolt 3.
If it is lower than 1, the oil drain pump will be
The air inside the pump cannot be pumped up. Therefore, there is a problem that a large amount of oil having the oil level L1 remains in the oil pan 1C. On the other hand, Shogan 51
Japanese Unexamined Patent Publication No. -160203 discloses a technique in which an oil drain port communicates with a vertical hole and a cut groove provided in a bottom wall. However, this technique applies pressure to a crank chamber in a compressor to drain oil, and is not applicable to an oil pan for a marine engine.

[0004]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a structure of a residual oil reducing type oil pan for a marine engine which reduces the amount of residual oil when pumping oil from the oil pan.

[0005]

According to the present invention, a boss is formed by projecting outward and inward from the bottom side surface of an oil pan, a drain hole is formed in the boss, and a pumping pipe is formed in the drain hole. The structure of a marine engine residual amount reducing oil pan in which the eye connector connected to the marine engine is screwed with an eye bolt from the outside, and the pumping tube and the drain hole communicate with each other through a hole drilled in the eye bolt. In the above, the drain hole is pierced from the outside at a position lower than the oil level leaving a partition at the inner boss end, and an opening communicating the drain hole and the inside of the oil pan is provided at a lower portion of the partition, The opening has an upper edge lower than the upper surface of the hole of the eyebolt and is formed to be horizontally long.

[0006] It is preferable that the above-mentioned opening be as long as possible and be horizontally long.

[0007]

According to the structure of the oil pan for a marine engine configured as described above, the oil pan is provided through the opening, drain hole, and eyebolt provided in the partition of the inner boss. When the oil is pumped from the pumping pipe, even if the oil level drops to the upper surface of the eyebolt hole, no air is sucked in due to the partition of the inner boss, and the lower part of the partition The oil is pumped until the oil level reaches the upper edge of the opening provided in the opening. Therefore, the residual amount of oil is
The oil amount between the upper surface of the eyebolt hole and the upper edge of the opening is reduced. Since the drain hole is provided at a position lower than the oil level, the oil can be discharged even when the pump is not used. On the other hand, the opening is formed in a horizontally long shape so that the area can be sufficiently secured, and there is no clogging of dust and the like, and the opening is provided at a lower portion in the oil pan and can be easily manufactured by casting or machining. It is not necessary to separate the bottom of the oil pan.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a boss 1a projecting outward and a boss projecting inward coaxially with the boss 1a are provided on the bottom side surface of the oil pan 1 for a marine engine having a flat bottom inner surface 1c. 1b are formed. The bosses 1a and 1b are provided with a drain hole 2 from the outside at a position below the oil level L while leaving a partition wall 8 at an end of the inner boss 1b. An eye connector 4 connected to a pumping pipe 5 from the outside is screwed into the drain hole 2 with oil bolts 3 through gaskets 6 and 7 in an oil-tight manner. And, as shown in the drawing,
A hole 3a is drilled from the screwing side and communicates with the pumping pipe 5. The pumping pipe 5 is connected to a drain pump (not shown). An opening 9 communicating with the drain hole 2 from the inside of the oil pan 1 is provided below the partition 8 of the inner boss 1b, and has a height h, as shown in FIG. The upper end 9a is formed in a horizontally long shape with a position lower than the upper surface position L1 of the eyebolt hole 3a.

Therefore, even if the oil is pumped up and the oil level L reaches the level L1 on the upper surface of the inner diameter of the eyebolt 3, the oil is not sucked by the partition wall 8 because it is blocked. And
Oil up to the oil level L2 at the upper edge of the opening 9 below the partition 8 is pumped. As a result, the oil level L
The residual amount is reduced by the amount of oil between 1 and L2, and according to experiments, the residual amount is 1/10 of the conventional amount.

[0011]

[Effect of the Invention] The present invention has the following effects because it is configured as described above. (A) The residual amount after pumping oil can be significantly reduced as compared with the conventional case. (B) Since the drain hole is provided at a position lower than the oil level, oil can be discharged even without using a pump. (C) The opening is formed horizontally long so that its area can be sufficiently ensured, there is no clogging with dust, etc., and it is provided at the lower part in the oil pan and is easily manufactured by casting or machining. It is not necessary to separate the bottom of the oil pan.

[0012]

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a side view illustrating a conventional relationship between an oil pan and a ship bottom.

FIG. 3 is a side sectional view showing an example of a conventional structure.

FIG. 4 is a side sectional view showing another example of the conventional structure.

[Explanation of symbols]

 A: Ship bottom L: Oil level 1, 1A, 1B, 1C: Oil pan 1a, 1b: Boss 1c: Inner surface of oil pan bottom 2, 2A: Drain hole 3 ...・ Eyebolt 3a ・ ・ ・ Eyebolt hole 4 ・ ・ ・ Eye connector 5 ・ ・ ・ Pumping tube 6, 7 ・ ・ ・ Gasket 8 ・ ・ ・ Partition 9 ・ ・ ・ Opening 9a ・ ・ ・ Opening upper edge

Claims (1)

(57) [Scope of request for utility model registration] A boss (1a, 1b) is formed on the bottom side surface of the oil pan (1) so as to project outward and inward, and a drain hole (2) is formed in the boss (1a, 1b). An eye connector (4) connected to the pumping pipe (5) is screwed into the drain hole (2) from the outside with an eyebolt (3), and the eyebolt (3) is drilled through a hole (3a). In the structure of the residual oil reducing pan for a marine engine in which the pumping pipe (5) and the drain hole (2) communicate with each other, the drain hole (2) is outwardly positioned below the oil level (L). The inner boss (1b) is perforated at the end of the inner boss (1b), leaving an opening (9) communicating the drain hole (2) and the inside of the oil pan (1) below the partition (8). The opening (9) has an upper edge (9a) with the upper surface of the eyebolt hole (3a). (L1) The structure of a low-remaining oil pan for a marine engine, wherein the oil pan is formed at a lower position and formed horizontally.