JPH04121412U - Engine lubricating oil drain device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an oil pan drain device that can completely drain lubricating oil and is convenient to handle. [Structure] A reinforcing rib (5) is integrally formed on the bottom wall (2) of an oil pan (1) formed of a steel plate. A plate-shaped nut (9) into which the drain plug (4) is screwed onto the top of the reinforcing rib (5).
are welded and fixed across the groove portion (6) formed between the reinforcing ribs (5). The drain hole (3) has reinforcing ribs (5)
It is formed so as to open into the groove portion (6) formed between the grooves.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea relates to lubricating oil drain devices for engines equipped with steel plate oil pans. It is something to do.

0002

[Conventional technology]

Generally, in engines equipped with a steel plate oil pan, there is a seal on the bottom wall of the oil pan. The structure is such that the oil pan is bent and formed to increase the rigidity and strength of the oil pan. stop The structure of the drain plug installation part in an engine equipped with such an oil pan was as shown in FIG. 4, for example. This drain device has reinforcing ribs (52) printed on the bottom wall (51) of a steel plate oil pan (50). It is integrally installed so that it protrudes into the oil pan by less molding, and it is attached to the oil pan (50). A drain hole (53) is provided through the bottom wall (51), and a drain boss (54) is inserted into this drain hole (53). Insert and secure the entire circumference by welding, and connect the drain screw hole (55) to the drain boss (54). Form a through hole and screw the drain plug (56) formed with a bolt into the drain screw hole (55). Open and close the drain screw hole (55) and drain the used lubricating oil (O). It is configured so that it is discharged from the turn screw hole (55). In addition, a steel plate oil pan (5 0), the thickness of the steel plate is, for example, about 1.6 mm, so the wall thickness of the oil pan (50) is The effective length of the screw cannot be obtained by 0) has a structure that protrudes inward.

0003

[Problem that the idea aims to solve]

Generally, exhausted lubricating oil (waste oil) is mixed with blow-by gas during engine operation. This includes carbon that has flowed into the crankcase and iron powder that has worn off from each sliding part. Therefore, when changing the oil, it is necessary to prevent waste oil from mixing with the new oil. Ru. However, in the conventional example above, the drain plug (56) is removed from the drain screw hole (55). Even if removed, the tip (57) of the drain boss (54) protrudes into the oil pan (50). Because of the I couldn't avoid it. Therefore, carbon and iron powder mixed into the new oil can Not only does this have a negative impact on the engine, but it also shortens the oil change cycle. It was. This invention was developed with attention to these points, and it is a method to completely remove waste oil from the oil pan. To provide a drain device that can be completely removed and is convenient to handle. aimed to.

0004

[Means to solve the problem]

In order to achieve the above objectives, the present invention is based on a drain formed on the bottom wall of the oil pan. A plate nut is formed between the reinforcing ribs at the apex of the reinforcing ribs located around the hole. Weld and fix the drain plug so that it straddles the groove where It is characterized in that the drain hole is configured to be openable and closable.

[0005]

[Effect]

In this invention, a plate nut is attached to the top of the reinforcing rib in the groove formed between the ribs. Connect the drain device by screwing the drain plug onto this plate nut. Because of the structure, the drain hole opens on the inner surface of the bottom wall of the oil pan. Therefore, the lubricating oil in the oil pan is completely drained without remaining in the oil pan when it is drained. It will be discharged outside the oil pan. This allows the new oil injected when changing the lubricating oil to This prevents residual oil from contaminating new lubricating oil.

[0006]

【Example】

Embodiments of the present invention will be described below based on the drawings. Figure 1 shows the drain according to the present invention. A partially cutaway exploded perspective view of the device, Figure 2 is a vertical sectional view of the oil pan, and Figure 3 is a cross-sectional view of the oil pan. FIG. This lubricating oil drain device is connected to the bottom wall (2) of the engine's steel oil pan (1). Open and close the drain hole (3) with a drain plug (4). It is configured as follows.

[0007] The steel plate oil pan (1) is formed by press forming a steel plate. A parallel reinforcing rib (5) is integrated into the bottom wall (2) with it protruding inside the oil pan. It has been formed. This reinforcing rib (5) is designed so as not to obstruct the flow of lubricating oil. Grooves formed in multiple rows and multiple columns, and formed between each reinforcing rib (5) (5) Portion (6) is designed to communicate. And the drain hole (3) has a reinforcing rib (5) Open in the center of the bottom wall of the oil pan (1) at the intersection of the grooves (6) formed between them. There is. As a result, the drain hole (5) opens at the lowest part of the oil pan bottom wall (2). As a result, the lubricating oil (O) in the oil pan does not remain in the oil pan (1). The oil is configured to be completely drained out of the oil pan from the drain hole (3).

[0008] The drain plug (4) that closes the drain hole (3) is made of bolts and is Press the ring packing (8) to the outer surface of the oil pan bottom wall (2) via the shear (7). This prevents lubricating oil from leaking out from the drain hole (3). The nut (9) to which this drain plug (4) is screwed is inserted into the cylinder from the plate part (10). The body portion (11) is formed in a shape that protrudes upward, and the inner surface of the cylindrical body portion (11) is screwed. It is formed in the hole (12). This plate nut (9) drains the drain hole (3). A shape is formed between the reinforcing ribs (5) at the apex of the reinforcing ribs (5) standing near the hole (5). It is fixed by projection welding across the groove (6) that is formed.

[0009] In the drain device configured as described above, the upper opening of the drain hole (3) is made of a steel plate. Since the opening will be at the same level as the bottom wall (2) of the oil pan (1) that was formed, By removing the drain plug (4), the lubricating oil (O) in the oil pan (1) will be completely drained. It will flow out of the oil pan (1).

0010

[Effect of the idea]

As is clear from the above explanation, in this invention, the oil pan is formed on a steel plate. Fix the nut part of the drain plug using the reinforcing ribs and attach it to the bottom wall of the oil pan. Since there is no protrusion from the surface, that is, the inner wall of the oil pan, the inside of the oil pan is The entire amount of lubricating oil can be completely drained. Moreover, the nut part of the drain plug is formed inside the steel oil pan. Because it is simply welded and fixed to the reinforcing ribs, the structure is simple and reliable. It can play an action.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway exploded perspective view of a drain device showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of an oil pan portion.

FIG. 3 is a plan view of the oil pan portion.

FIG. 4 is a longitudinal sectional view of a main part of a conventional drain device.

[Explanation of symbols]

1... Oil pan, 2... Bottom wall of oil pan, 3... Drain hole, 4
…Drain plug, 5…Reinforcing rib, 6…Groove portion, 9…Plate nut.

Claims (1)

[Scope of utility model registration request] [Claim 1] Bottom wall of engine steel plate oil pan (1)
A reinforcing rib (5) is integrally formed in (2) so as to protrude into the oil pan, and a drain hole is opened in the oil pan bottom wall (2).
In an engine lubricating oil drain device configured to open and close (3) with a threaded drain plug (4), a reinforcing rib (5) located around the drain hole (3) inside the oil pan (1) is used. ) at the top of the plate nut (9) for reinforcing ribs.
(5) Weld and fix the groove part (6) formed in between, and screw the drain plug (4) onto this plate nut (9) to open and close the drain hole (3). A lubricating oil drain device for an engine, characterized in that it is configured as follows.