JP2001300212A - Car oil filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a car oil filter 1 capable of reducing the oil passing resistance of a filter member 5. SOLUTION: The filter member 5 is formed by using a fixture not showin in a drawing in a slurry in which fibers are suspended to suck the slurry to accumulate and mold fibers on the surface of the fixture. The filter member 5 has plate-shaped inclined surfaces 5a extending obliquely up and down along the outer periphery of a core 6 in almost constant width and the inclined surfaces 5a continue in a V-shape to be provided on the whole periphery of the core 6. The filter member 5 is provided so that the inside end surfaces of the inclined surfaces 5a come into close contact with the outer peripheral surface of the core 6 and the outside end surfaces of the inclined surfaces 5a are inserted in a case 2 along the inner peripheral surface thereof under pressure to seal the dusty side and clean side of the filter member 5. In this constitution, oil flowing in the case 2 can pass through the respective inclined surfaces 5a of the filter member 5 from below to above. In this case, since the flow direction of oil is not largely changed on the upstream side of the filter member 5, the oil passing resistance of the filter member when used can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automotive oil filter for filtering oil.

[0002]

2. Description of the Related Art As a prior art, for example, Japanese Patent Laid-Open No. 11-2
There is an oil filter disclosed in Japanese Patent No. 67424.
This oil filter uses a filter formed by depositing fibers on the surface of a jig by suction molding.
Oil that has flowed into the inside of the case from the inlet opening at the bottom of the case once flows along the inner peripheral surface of the case to the outer diameter side of the filter, and the oil flows radially from the outer diameter side to the inner diameter side of the filter. It is configured to pass.

[0003]

However, in the above-mentioned oil filter, the oil flow greatly changes inside the case (particularly, on the upstream side of the filter), so that the oil flow resistance increases and the performance of the filter increases. There was a problem that it could not be fully demonstrated. The present invention has been made based on the above circumstances,
An object of the present invention is to provide an oil filter for automobiles that can reduce the oil flow resistance of a filter.

[0004]

(Means for Solving the Problems) The filter of the present invention is formed by depositing fibers on the surface of a jig by suction molding, and the flow direction of the oil passing therethrough is controlled. The filter case is configured to substantially coincide with the vertical direction of the filter case, and the filtering surface is provided in an uneven shape. According to this configuration, the flow direction of the oil does not largely change on the upstream side of the filter, so that the oil flow resistance can be reduced as compared with the oil filter described in the related art. Also, the filter body is
Instead of bending the filter paper, the fiber is deposited on the surface of the jig by suction molding and molded. Therefore, the configuration of the present invention (the flow direction of the oil passing through the filter is the same as the vertical direction of the filter case) Even if they substantially match and the filtration surface is uneven), it can be easily molded.

According to a second aspect of the present invention, in the oil filter for an automobile according to the first aspect, the filter is provided on an annular body disposed on an outer periphery of the outflow passage, and an inner peripheral surface thereof is formed on an outer peripheral surface of the outflow passage. The outer peripheral surface is tightly sealed to the inner peripheral surface of the filter case. Thereby, it is possible to configure so that oil can pass vertically through the filter body in the filter case.

[0006]

Next, an oil filter according to the present invention will be described with reference to the drawings. (First Embodiment) FIG. 1 is a perspective view of an element. The oil filter 1 of this embodiment filters engine oil of an automobile, and as shown in FIG. 2, is composed of a case 2, an element (described below), a check valve 3, a bottom plate 4, and the like. . The case 2 is made of, for example, iron, and is opened only on the lower side shown in FIG. 2 and closed on the upper side in a bag shape.

The element is composed of a filter 5 for filtering oil and a core 6 holding the filter 5. The filter 5 is suction-molded using a jig (not shown) in a slurry in which the fibers are turbid, and the fibers are formed by depositing the fibers on the surface of the jig. As shown in FIG. 1, the filter body 5 has a plate-shaped inclined surface 5a extending in an oblique vertical direction with a substantially constant width on the outer periphery of the core 6, and the inclined surface 5a is continuously formed in a V-shape. 6 are provided all around.

The core 6 is provided in a cylindrical shape, and is disposed at a central portion in the case 2 as shown in FIG. 2, and has a lower opening communicating with the oil outlet 4a described below. This element is the inner peripheral surface of the filter 5 (the inner end surface of each inclined surface 5a).
Is provided in close contact with the outer peripheral surface of the core 6, and the outer peripheral surface of the filter 5 (the outer end surface of each inclined surface 5 a) is pressed into the inner peripheral surface of the case 2, so that the dusty side of the filter 5 is removed. Clean side and seal.

The check valve 3 is made of rubber, for example, and is opened by the inflow pressure of the oil flowing from the oil inlet 4b described below to prevent the oil from flowing backward (the oil flowing out of the oil inlet 4b). I have. Further, the check valve 3 is interposed between the lower end of the core 6 and the bottom plate 4 to close the two in a liquid-tight manner. The bottom plate 4 has a thin metal plate 7 integrally attached to the outer surface of the bottom plate 4. The outer peripheral portion of the metal plate 7 is fastened to the periphery of the opening of the case 2 and fixed to the opening end of the case 2. ing. The bottom plate 4 is provided with an oil outlet 4a at the center, and a plurality of oil inlets 4b around the oil outlet 4a.

Next, the operation of the oil filter 1 will be described. The oil filter 1 is attached by screwing a screw portion 4c (see FIG. 2) provided on the inner peripheral surface of the oil outlet 4a to an engine-side oil port (not shown). The oil pumped up by a pump (not shown) (oil contaminated by lubricating the moving parts of the engine) flows into the case 2 by opening the check valve 3 from the oil inflow port 4b, and flows into each of the inclined surfaces of the filter body 5. 5a is passed upward from below in FIG. The oil that has been purified by passing through the filter 5 flows out above the filter 5 as shown by the arrow in FIG. 2, then flows into the cylinder of the core 6 from the upper end opening of the core 6, and flows out from the oil outlet. It flows out of 4a and is supplied to the engine.

(Effect of this embodiment) In the oil filter 1 of this embodiment, the oil flowing into the case 2
Can pass through each inclined surface 5a from below to above. In this case, since the flow direction of the oil does not greatly change on the upstream side of the filter body 5, the oil flow resistance during use can be reduced. In addition, since the filter body 5 is not formed by bending filter paper, but is formed by depositing fibers on the surface of a jig by suction molding, even in the configuration shown in FIG.
It can be easily formed.

(Second Embodiment) FIG. 3 is a perspective view of an element. The element of the present embodiment, as shown in FIG.
This is an example in which a wedge-shaped space formed between inclined surfaces 5a adjacent in the circumferential direction is closed by providing an outer peripheral surface 5b only on the dusty side. FIG. 3A is a perspective view of the element as viewed obliquely from above, and FIG. 3B is a perspective view of the element as viewed obliquely from below. In this element, since the lower end of the filter body 5 has an outer peripheral surface 5b over the entire circumference, it can be sealed to the case 2 only by the lower end having the outer peripheral surface 5b. The number of seal portions can be reduced as compared with the element of (1).

[Brief description of the drawings]

FIG. 1 is a perspective view of an element (first embodiment).

FIG. 2 is a sectional view of an oil filter (first embodiment).

FIG. 3 is a perspective view of an element (second embodiment).

[Explanation of symbols]

 Reference Signs List 1 oil filter for automobile 2 case (filter case) 5 filter body 5a inclined surface (filter surface) 6 core (outflow path)

Claims (2)

[Claims] 1. A filter body formed by depositing fibers on the surface of a jig by suction molding, and a filter case accommodating the filter body therein, wherein the filter body is provided with oil passing therethrough. An oil filter for an automobile, wherein a flow direction is substantially coincident with a vertical direction of the filter case, and a filtering surface is provided in an uneven shape. 2. The oil filter for an automobile according to claim 1, further comprising: a tubular outflow passage provided in the filter case so as to extend in a vertical direction and through which the oil filtered through the filter body flows. The filter body is provided on an annular body disposed on the outer periphery of the outflow passage, an inner peripheral surface thereof is tightly sealed to an outer peripheral surface of the outflow passage, and an outer peripheral surface is an inner peripheral surface of the filter case. An oil filter for automobiles, which is sealed in close contact with the oil filter.