JP2009150330A - Oil filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil filter for allowing simple and easy mounting/demounting of a filter element in/from a housing, wherein the housing and a cover as well as the filter element are recyclable. <P>SOLUTION: The oil filter comprises the bottomed cylindrical housing mountable on an equipment body and opening at one end, a filter element unit to be detachably mounted in the housing, and a cover member for closing an opening portion of the housing. The cover member has a screw portion to be detachably threaded to a screw portion of the housing. Between the cover and the housing, a seal member is mounted for sealing a space between the housing and the cover. An element body as part of the filter element unit is formed of a metal net member. The filter element unit has a magnet for attracting metal powder mixed into oil. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an oil filter for mainly filtering metal powder mixed in oil of an internal combustion engine of an automobile.

  In general, for example, engine oil used for promoting smooth operation of an internal combustion engine of an automobile is mixed with metal powder, carbon, sludge, etc. due to friction, wear, fuel combustion, or deterioration of the oil itself. These metal powders cause damage to pistons and bearings.

  Therefore, oil filters are conventionally used to extract oil containing these metal powders, etc. from the engine, filter and clean it, and supply the purified oil to the engine again for circulation. .

  That is, as such an oil filter, a filter element is loaded in a bottomed cylindrical housing, and a lid body having an oil inlet and an oil outlet is assembled in an opening of the housing, A so-called cartridge type is known in which metal powder or the like in oil flowing in from an oil inflow port is filtered by a pump or the like, and the filtered oil is discharged from the outflow port. (See Patent Document 1).

However, the above-described cartridge type oil filter is a so-called disposable type in which the lid is detachably assembled to the housing and cannot be disassembled by the user. Therefore, the user who uses the above oil filter For this, it is quite expensive to replace the oil filter.
JP 2003-126613 A

  The present invention has been developed in view of the above circumstances, and the object is to allow the filter element to be easily and easily loaded or removed from the housing. An object of the present invention is to provide an oil filter capable of reusing elements.

In order to achieve the above object, the invention described in claim 1
A bottomed cylindrical housing with an open end that can be attached to the device body;
A filter element unit detachably loaded in the housing;
A lid member for closing the opening of the housing is provided;
The lid member is provided with a screw portion that is detachably screwed to a screw portion provided in the housing, and seals a gap between the housing and the lid body between the lid body and the housing. The element main body which comprises the said filter element unit is formed from the metal net | network member, It is characterized by the above-mentioned.

  The invention according to claim 2 is characterized in that the filter element unit according to claim 1 is provided with a magnet for adsorbing metal powder mixed in the oil.

  According to the first aspect of the present invention, the filter element can be removed from the housing and the filter element can be easily and easily cleaned, so that not only the housing and the lid but also the filter element can be reused. .

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the metal powder mixed in the oil can be efficiently removed by the filter element and the magnet.

Hereinafter, an embodiment of an oil filter according to the present invention will be described.

  An oil filter 1 according to the present invention basically includes a bottomed cylindrical housing 2 having an open end, a filter element unit 3 that is detachably inserted into the housing 2, and a housing 2 that is detachable. The cover 4 is assembled to the cover 4, the silicon rubber check valve 5 for preventing the backflow of oil, and the spring member 6 for pressing the filter element unit 3 in the housing toward the cover 4 side. ing.

  The housing 2 and the lid 4 are made of aluminum, and the spring member 6 is made of a stainless steel plate.

  A knurl 21 is formed on the outer peripheral surface of the upper side of the housing 2, and an operation projection 22 having a hexagonal shape in plan view is provided on the upper surface.

  A female screw 23 is provided around the inner peripheral surface of the lower end portion of the housing 2.

  The filter element unit 3 includes an element body 31 formed in a cylindrical shape from a metal, specifically a stainless steel net member, and an upper lid 32 and a lower lid 33 assembled to the upper end and the lower end of the element body 31, respectively. The coil spring 34 is interposed between the upper and lower lids 32 and 33 in the element body 31.

  The coil spring 34 is provided in order to suppress the deformation of the element body 31 and to have a shape with a small projected area so as to ensure an oil flow rate.

  And the magnet 8 for adsorb | sucking the metal powder mixed in oil is engage | inserted by the recess 35 provided in the upper surface center of the upper cover 32. As shown in FIG.

  An oil circulation port 36 is provided in the center of the lower lid 33 so as to be fitted into a cylinder portion 41a of the lid body 41 described later.

  In the embodiment, a mesh member having a mesh opening of about 30 microns is used as the mesh member constituting the element body 31.

  The lid 4 is provided with a disc-shaped lid main body 41, and a cylindrical portion 42 having a diameter slightly smaller than the outer periphery of the lid main body 41 protrudes from the upper surface of the lid main body 41. Is provided with a male screw 43 which can be screwed onto the female screw 23 described above.

  A synthetic rubber O-ring 40 is fitted on the outer peripheral base portion of the cylindrical portion 42, and a knurl 47 is engraved on the outer peripheral surface of the lid body 4.

  The lid body 41 is formed with a plurality of oil inlets 44 and one oil outlet 45, and an internal thread 46 is provided on the inner peripheral surface of the oil outlet 45 for screwing onto the internal combustion engine of the automobile. Has been.

  Further, a fitting 48 for fitting the silicon rubber annular seal member 7 is provided around the outer periphery of the lower surface of the lid main body 41, and the inner surface of the fitting groove 48 projects to the inner circumference of the annular seal member 7. An engagement groove 49 into which the provided annular lip 71 is fitted is provided.

  The check valve 5 is provided with a fitting hole 51 that can be fitted into a cylindrical portion 41a protruding at the center of the upper surface of the lid main body 41. By fitting the fitting hole 51 into the cylindrical portion 41a, a lid is formed. The oil inlet 44 that opens to the upper surface of the main body 41 is covered.

  The spring member 6 is interposed between the upper surface in the housing 2 and the upper lid 32 of the filter element unit 3 accommodated in the housing 2.

  In the oil filter 1 having the above structure, after the spring member 6 and the filter element unit 3 are sequentially inserted into the housing 2, the lid 4 is applied to the opening of the housing 2, and the male screw 43 of the lid 4 is attached to the housing. The oil filter 1 is assembled by screwing on the female screw 23.

  The assembled oil filter 1 is used by being assembled to an internal combustion engine of an automobile via a female screw 46, and oil accumulated in the internal combustion engine is driven from an oil inlet 44 of the lid 4 by driving an oil pump. After flowing into the housing 2 through the check valve 5, the metal powder mixed in the oil is partially adsorbed by the magnet 8, and the remaining metal powder mixed in the oil, carbon, sludge, etc. When oil passes through the element body 31 of the filter element unit 3, it is filtered by the element body 31.

  The purified oil is returned to the internal combustion engine from the oil outlet 45 of the lid 4 again.

  When cleaning the oil filter that has been assembled to the internal combustion engine and used for a certain period of time as described above, the cover 4 is rotated relative to the housing 2 in the loosening direction after removing the entire oil filter 1 from the internal combustion engine. The cover body 4 is removed from the housing 2 and the filter element unit 3 in the housing 2 is taken out to remove the metal powder, carbon, sludge, etc. remaining on the outer surface of the magnet and the element body 31. Since 31 is formed of a stainless steel net, metal powder, sludge and the like adhering to the surface of the element body 31 can be easily and easily removed with, for example, a brush or a cleaning solution. Can be reused.

  When the cleaning of the entire oil filter is completed, the filter element unit 3 is returned to the housing 2 again, and then the male screw 43 of the lid 4 is screwed to the female screw 23 of the housing. Assemble.

  The assembled oil filter 1 can be reused by being assembled again to the internal combustion engine of the automobile via the female screw 46.

  By the way, since the annular lip 71 is engaged with the engagement groove 49, the annular seal member 7 has an annular seal when the oil filter 1 is removed from the internal combustion engine even if the annular seal member 7 is fixed to the internal combustion engine side. The members do not carelessly remain on the internal combustion engine side, and can be reliably peeled off from the internal combustion engine side.

The front view which shows one Embodiment of the oil filter concerning this invention. FIG. Same as above, vertical section The partially cutaway front view of a filter element unit. The longitudinal cross-sectional view of a cover body. The top view of an element main body. The longitudinal cross-sectional view of an annular sealing member.

Explanation of symbols

1 Oil Filter 2 Housing 23 Female Thread (Screw)
3 Filter element unit 31 Element body 32 Upper lid 33 Lower lid 4 Lid body 43 Male thread (screw part)
44 Oil inlet 45 Oil outlet 5 Check valve 6 Spring member 7 Annular seal member 8 Magnet

Claims (2)

A bottomed cylindrical housing that can be attached to the apparatus main body is provided with a bottomed cylindrical housing, a filter element unit that is detachably loaded in the housing, and a lid member that closes the opening of the housing. Is provided with a screw part detachably screwed to a screw part provided in the housing, and a seal for sealing a gap between the housing and the cover body between the cover body and the housing. An oil filter characterized in that a member is interposed and an element main body constituting the filter element unit is formed of a metal net member.   The oil filter according to claim 1, wherein the filter element unit includes a magnet for adsorbing metal powder mixed in the oil.

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