JPH0444807Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is suitable for engines with oil sealed inside.
The present invention relates to a lid used for an oil-tight body such as a speed reducer.

In this specification, the term "aluminum" includes not only pure aluminum but also aluminum alloys.

Prior Art and Its Problems For example, in an automobile engine, a lid that also serves as a flange for attaching a branch pipe of an intake manifold is bolted to the cylinder head of the engine body, which contains oil, through a gasket. The tip of the branch pipe of the intake manifold is connected to the lid. However, despite the presence of the gasket, internally splashed oil may seep out between the lid and the cylinder head. When oil seeped out, there was a problem that the amount of oil consumed increased and the engine became dirty.

The purpose of this invention is to provide a lid for an oil-tight body that solves the above-mentioned problems.

Means for Solving the Problems The lid for an oil seal according to this invention consists of a seal body into which oil is placed and a lid, and the lid is used for an oil seal in which oil inside the body scatters toward the lid. An oil sump groove is formed on the inner surface that contacts the main body, and further includes an oil guide path that communicates the oil sump groove with the inside of the main body and guides the oil scattered and attached to the lid to the oil sump groove, and It is characterized in that an oil recovery path is formed that communicates the oil sump groove with the outside of the sealing body.

In the above, examples of the oil seal include automobile engines, reduction gears, and the like. In an automobile engine, oil is splashed by the piston, crankshaft, and the like. In reduction gears, oil is splashed by various gears and gear shafts.

Embodiments Hereinafter, embodiments of this invention will be described with reference to the drawings.

In this example, the oil seal is an automobile engine.

An automobile engine consists of an engine body 1 and a lid 2, and an intake manifold 3 is connected to the lid 2, which also serves as a flange for connecting a branch pipe.

The lid 2 is made of aluminum casting and has four holes 2 corresponding to each cylinder 11 of the engine body 1.
1, and a cylindrical part 22 into which the branch pipe 31 of the intake manifold 3 is inserted around each hole 21 on its outer surface.
are integrally provided. Furthermore, four fuel injector attachment ports 23 are formed in the lid 2, and injectors (not shown) for injecting fuel into the intake ports of each cylinder 11 can be attached to these attachment ports 23. Further, an oil sump groove 24 is formed on the inner surface of the lid 2, which is in contact with the engine body 10. Furthermore, on the lid 2,
The oil sump groove 24 and the circumferential surface of each hole 21 are communicated with each other, and the oil scattered and attached to the periphery of the hole 21 is removed from the oil sump groove 24.
Oil guide groove 25 (oil guide path) leading to the oil guide groove 2, and oil sump groove 2
4 and the outer circumferential surface of the lid 2 are formed. A forced oil recovery device (not shown) is connected to the outer end of the oil recovery path 26, and the forced oil recovery device removes the oil that has been scattered and adhered to the circumferential surface of the hole 21 of the lid 2 through the groove 25. The oil is guided into the oil sump groove 24, collected through an oil recovery path 26, and returned to the engine body 1. And lid 2
is attached to the engine body 1 via a gasket 4 by means such as bolting. The intake manifold 3 has one end open and the other end closed, and has a plurality of holes 3 in the peripheral wall.
A main pipe 34 made of aluminum wrought material has a cylindrical outer protrusion 33 for connecting a branch pipe integrally provided around each hole 32, and a cylindrical outer protrusion 33 for connecting a branch pipe at one end thereof. It is provided with a plurality of branch pipes 31 made of extruded aluminum pipes connected to the side protrusion 33 in a fitted state. The tip of each branch pipe 31 is inserted into the cylindrical part 22 of the lid 2 and brazed to the cylindrical part 22.

In such a configuration, while the engine is running, oil stored in the engine body 1 scatters and adheres to the lid 2. The oil that has scattered and adhered to the lid 2 is removed by a forced oil recovery device into the groove 25.
The oil is guided through the oil sump groove 24 and returned into the engine body 1 through the recovery path 26.

Effects of the invention The oil seal lid of this invention has an oil sump groove formed on the inner surface that contacts the main body, and further communicates the oil sump groove with the inside of the main body, and removes the oil that has spattered and adhered to the lid. Since a passage leading to the oil sump groove and an oil recovery passage communicating between the oil sump groove and the outside of the sealing body are formed, in an oil sealing body having this lid, a forced type When the recovery device is connected, the oil in the main body is scattered and the oil adhering to the lid is recovered through the passage, the oil sump groove, and the oil recovery path. Therefore, seepage from between the main body and the lid is prevented, and dirt is prevented. Moreover, the recovered oil can be returned to the sealed body, and wasteful consumption of oil can also be prevented.

[Brief explanation of the drawing]

The drawings show an example in which the lid of the invention is applied to an automobile engine. Figure 1 is a perspective view, Figure 2 is an inside view of the lid, and Figure 3 is an enlarged view of the connection between the lid and the branch pipe. FIG. 1...Engine body (main body of sealed body), 2...
Lid, 24...oil sump groove, 25...oil guide groove (oil guide path), 26...oil recovery path.

Claims (1)

[Scope of utility model registration request] A lid used for an oil seal that consists of a seal body in which oil is placed and a lid, and in which oil inside the body scatters toward the lid, and an oil sump groove is formed on the inner surface that contacts the body. Furthermore, an oil guide path is formed that communicates the oil sump groove with the inside of the main body and guides the oil that has scattered and adhered to the lid to the oil sump groove, and an oil recovery path that communicates the oil sump groove with the outside of the sealing body. Lid for oil seals on engines, etc.