JPS6145284Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of an oil filter device for an internal combustion engine such as an automobile.

In the lubrication system of an internal combustion engine such as an automobile, an oil filter device is used to remove foreign matter such as minute dust mixed into oil (reference document JP-A-56-127809). Conventionally, as shown in FIG. 1, there is an oil filter device in which an oil filter main body 2 is disposed downstream of an oil pump (not shown) and horizontally attached to a side wall 1 of a cylinder block. An oil inlet hole 3 and an oil reservoir 3A are formed in the cylinder block side wall 1.
Dirty oil from the oil pump side is introduced into the oil filter body 2 through the element 4.
After filtering, the clean oil is sent to the main gear rally (not shown) through the center pipe 5 and an oil outflow hole 6 formed in the side wall 1 of the cylinder block to communicate with the center pipe 5, and this oil is used to control each bearing part of the engine or the sliding part. I try to lubricate the parts.

However, in the case of such an oil device,
Because the oil inflow hole 3 connected to the oil reservoir 3A is located below the oil outflow hole 6 and the upstream opening end 5A of the center pipe 5 due to its layout, when the engine is stopped, the inside of the oil filter body 2 The oil accumulated in the main gear and the oil in the main gear will flow back through the oil inflow hole 3.

Therefore, in order to prevent this, a check valve 7 is installed inside the oil filter body 2. However, due to long-term continuous driving, increase in oil temperature due to high outside temperature, repeated use of the check valve 7, etc., the performance of the check function part of the check valve 7 deteriorates, and as a result, the inside of the oil filter body 2 The ability to retain oil is lost,
There still existed a problem that oil leaked from the check valve 7 and returned to the oil pump side through the oil inlet hole 3.

Therefore, the oil level in the oil filter body 2 is regulated by the through hole 8A at the lowest position of the back plate 8, and a small amount of oil remains, causing a delay in supply from the oil filter when starting the engine. This causes a lack of oil, which causes abnormal noises due to incomplete lubrication in each bearing or sliding part of the engine, which tends to cause problems such as accelerated wear and bearing seizure.

This idea was devised in view of this inconvenience, and includes an oil outflow hole formed in the side wall of the cylinder block for guiding the oil flowing out from the center pipe of the oil filter attached to the side wall to the main gear gallery, and a hole below the oil outflow hole. Installation of an oil filter equipped with an oil inlet hole that guides oil pressure-fed from an oil pump to an oil reservoir, and an annular oil reservoir interposed to communicate the oil inlet hole with the oil filter body. a cylindrical pipe part that connects the oil outflow hole and the center pipe of the oil filter;
A spacer comprising a disc part integrally formed on the outer periphery of the cylindrical pipe part to block communication between the oil reservoir part and the oil inflow hole, and an oil circulation hole opened in the disc part, By interposing the oil filter mounting portion and the oil filter body and arranging the oil distribution hole above the oil outflow hole, a large amount of oil remains in the oil filter. Eliminate the inconvenience.

This idea will be explained below based on the drawings.
Note that the same parts as in FIG. 1 will be described with the same reference numerals.

In Fig. 2, the cylinder block side wall 1 has an oil filter body 2 with an element 4 inside.
is laid aside via packing 2A. The cylinder block side wall 1 includes an oil outflow hole 6 that guides clean side oil flowing out from the center pipe 5 of the oil filter to a main gear rally (not shown), an annular oil reservoir 3A disposed on the outer periphery of the oil outflow hole 6, and An oil inflow hole 3 is formed below the outflow hole 6 and guides oil pumped from an oil pump (not shown) to the oil reservoir 3A.
and constitute the oil filter mounting portion 10.

A cylindrical tube portion 9A of a spacer 9 according to the present invention is screwed into the oil outflow hole 6 of the oil filter mounting portion 10, and the other end of the cylindrical tube portion 9A is fixed to the back plate 8 of the oil filter body 2. A center pipe 5 is screwed in. A through hole 8A is opened at the lower part of the back plate 8, and communicates the dust side of the element 4 with the oil reservoir 3A. A check valve 7 made of a rubber lip is provided to prevent the dust side oil of the element 4 from flowing into the oil reservoir 3A through the through hole 8A.

The spacer 9 according to the present invention is a cylindrical pipe portion 9 connecting the oil outflow hole 6 and the center pipe 5.
A disk portion 9B is integrally formed on the outer periphery of A, and the oil reservoir portion 3A and oil inlet hole 3 are connected to the disk portion 9.
It communicates only through the oil distribution hole 9C opened at the upper position of B.

In addition, the cylinder block side wall 1 and the cylindrical tube part 9A
The tightening force (4 to 6 kg.m) for connecting the cylindrical tube section 9A and the center pipe 5 is the same as the tightening force (1 to 6 kg.m) for connecting the cylindrical tube part 9A and the center pipe 5
1.5Kg. m) The spacer 9 is set larger to prevent the spacer 9 from coming off from the cylinder block side wall 1 when the oil filter is attached to the cylindrical tube portion 9A.

Further, an O-ring 11 is fitted onto the outer circumferential surface of the disc portion 9B and is brought into close contact with the inner circumferential surface 3B of the annular oil reservoir portion 3A to complete the oil seal. End face of disk portion 9B of spacer 9 and oil filter mounting portion 10
A shim 12 is provided at the contact portion of the end surface of the spacer 9 to adjust the oil flow hole 9C to be located at a predetermined upper position when the spacer 9 is screwed to the oil flow hole 6.
is interposed. As the material of the shim 12, a metal washer, an oil-resistant rubber ring, or the like is used.

In the above configuration, oil is pumped by an oil pump (not shown) from the oil inflow hole 3 through the oil distribution hole 9C into the annular oil reservoir 3A.
into the through hole 8A of the back plate 8, and the check valve 7.
It passes through and reaches the dust side of element 4. After removing dirt such as minute dust by filtration, the clean oil on the clean side passes through the center pipe 5 and the cylindrical tube part 9A of the spacer 9, flows out from the oil outflow hole 6 to the main gear rally, and then It is supplied to lubricated parts of various parts of the engine.

When the engine is stopped, the oil pump stops, so the oil accumulated in the main gear rally and the oil filter body 2 is moved by gravity to the small check valve 7 whose check function has deteriorated due to use over time. From the gap through the through hole 8A of the back plate 8,
The oil begins to return little by little to the oil distribution hole 9C of the spacer 9 and the annular oil reservoir 3A. However, since the spacer 9 with the oil distribution hole 9C according to the present invention located above is attached to the oil reservoir 3A, the oil in the oil filter body 2 located below the oil distribution hole 9C is transferred through the oil distribution hole. The oil is prevented from flowing into the oil inflow hole 3 through 9C and remains there, and the oil level is maintained at a high level.

Therefore, when the engine starts, the large amount of oil accumulated here quickly supplies oil to the main gear rally, which prevents lubricated parts of the engine from wearing out due to lack of oil or causing abnormal noise. It can be prevented.

The position of the oil flow hole 9C provided in the spacer 9 is preferably within ±30° from the uppermost point by adjusting the rotation around the axis of the spacer 9, and at least the upstream opening end 5A of the center pipe 5 or the oil outlet. The oil filter body 2 is positioned above the hole 6 to ensure the amount of oil retained in the oil filter body 2.

As explained above, according to the present invention, the structure of the cylinder block and oil filter can be improved by simply interposing a spacer with an oil flow hole located at a relatively high position between the oil reservoir and the oil inlet. It can effectively solve the problem of oil supply shortage at startup without changing anything. Further, even without the check valve conventionally provided in the oil filter, the oil can be sufficiently retained in the oil filter body, so the above-mentioned problems due to the presence or absence of the check valve do not occur.

[Brief explanation of drawings]

Figure 1 is a sectional view of a conventional oil filter device.
FIG. 2 is a sectional view of an oil filter device equipped with the spacer of the present invention. DESCRIPTION OF SYMBOLS 1... Cylinder block side wall, 2... Oil filter, 3... Oil inflow hole, 6... Oil outflow hole, 9... Spacer, 9A... Cylindrical tube part, 9B
...Disc part, 9C...Oil distribution hole, 10...Oil filter mounting part.

Claims (1)

[Scope of utility model registration request] There is an oil outflow hole on the side wall of the cylinder block that guides the oil flowing out from the center pipe of the oil filter placed next to the side wall to the main gear gallery, and an oil reservoir that sends the oil under pressure from the oil pump formed below the oil outflow hole. An oil filter mounting portion is formed that includes an oil inflow hole that leads to the oil inflow hole, and an annular oil reservoir that is interposed to communicate the oil inflow hole and the inside of the oil filter body. A cylindrical tube portion connecting the center pipe of the filter, a disk portion integrally formed on the outer periphery of the cylindrical tube portion for sealing communication between the oil reservoir portion and the oil inlet hole, and an opening in the disk portion. An internal combustion engine characterized in that a spacer having an oil flow hole is interposed between the oil filter mounting portion and the oil filter body, and the oil flow hole is disposed above the oil outflow hole. Engine oil filter device.