JP4644276B2 - oil filter - Google Patents

Description

  The present invention relates to an oil filter for filtering oil circulated and supplied in an internal combustion engine such as an automobile, and more particularly, impurities clogged in a filter instead of a paper filter used for a replace type (only the content filter is replaced) oil filter. The present invention relates to an oil filter that can be reused repeatedly by removing and cleaning.

  There are two types of oil filters that filter oil that is circulated and supplied in an internal combustion engine such as an automobile. The oil filters are cartridge type (replace the entire outer case) and replace type (replace only the internal filter). The repress type oil filter uses a paper filter, and can be reused by replacing the used paper filter.

  Conventionally, as shown in FIG. 11, a paper filter 1 used for a replacement type oil filter includes a filter paper 2 and an end face plate 3, and the filter paper 2 and the end face plate 3 are bonded to each other with an adhesive.

  In addition, a paper oil filter is proposed that includes a cylindrical shape-retaining member at the center and disc-shaped sealing lids at both ends of the paper filter (see, for example, Patent Document 1).

  In Patent Document 1, the paper oil filter is for a cartridge type oil filter, and has a cylindrical shape retaining member having a large number of through holes on the side surface, and a continuously bent peripheral side surface in which the shape retaining member is installed. A substantially cylindrical paper filter having an annular shape, a disc-shaped sealing lid fixed to one end surface of the cylindrical paper filter, and an annular shape having an opening that is fixed to the other end surface and communicates with the interior of the shape retaining member It consists of a sealing lid, and the cylindrical shape retaining member, the disk-shaped sealing lid and the annular sealing lid are all made of paper, and the cylindrical shape retaining member is arranged on the inner diameter side of the paper filter, and both edges of the paper filter Were fixed to the inner surface of the disc-shaped sealing lid and the inner surface of the annular sealing lid with an adhesive to obtain an oil filter body.

  Thereby, since the main body part of the oil filter used for automobiles and the like is entirely made of paper, it is possible to reduce the weight of the parts and facilitate disposal.

JP-A-9-308805

  However, the conventional paper oil filter described above has been able to reduce the weight of the parts, but since the parts that make up the oil filter are bonded with an adhesive, if burned when discarded, it is a chemical substance that is discharged, There is a risk of polluting the atmosphere. Moreover, when it is reclaimed, it is left in nature without being decomposed because it has plenty of chemical adhesive. That is, the conventional paper filter has a problem that it cannot be discarded as it is after use.

  In addition, the conventional paper filter consists only of filter paper, so that the filter paper itself becomes weaker when the high temperature engine oil is exposed to high pressure for a long time and the oil is filtered. There was a problem of deformation.

  In addition, the conventional paper filter is actually an “I” shape (see FIG. 7), not the shape of the folds, so that the oil does not pass and the actual filtration area is the valley side. There was a problem that it became only (base).

  In addition, since the adhesive is used in a large amount, the adhesive hangs down on the filtration portion of the filter paper 2, which has a problem of affecting the filtration.

  In addition, since the surface of the filter paper (and the back side) is fluffy, if the fluff on the front surface is peeled off, it will cause clogging as it is, and if the fluff on the back side is peeled off, it may enter the engine without filtering. .

  Therefore, the present invention has been made in consideration of such problems, and can maintain the shape of the filter without using an adhesive, prevent the reduction of the filtration area, and each component of the filter. The oil filter can be assembled and disassembled freely, can be cleaned and reused, and is not disposable.

  The oil filter according to the present invention is formed inside the filter body so as to support the inside of the filter body, and the filter body in which the filter medium is bent into a zigzag shape and bent into a cylindrical shape as a whole. A cylindrical support member having a large number of through holes, a pair of end surface members that are opened in the central portion and have a recess for fitting the end of the filter body on one side, and the cylindrical support member inside the filter body A connecting and fixing member that connects and fixes the pair of end surface members attached to both ends of the filter body in the disposed state, and the cylindrical support member, the end surface member, and the connecting and fixing member are made of metal. These are provided so that they can be assembled and disassembled detachably.

  For example, the connection fixing member is a plurality of long screws corresponding to the length of the filter main body, and the pair of end surface members are provided with a plurality of holes through which the long screws are inserted, and the other side is provided with the above-mentioned A plurality of screw holes into which long screws are screwed are provided, and the pair of end surface members attached to both ends of the filter main body are connected by the plurality of long screws to fix the filter main body.

  Further, for example, the connection fixing member is provided with screw holes at both ends, a plurality of adapters having a length corresponding to the length of the filter body, and a plurality of connection screws screwed into the screw holes at both ends of the adapter. The pair of end surface members are provided with a plurality of holes through which the connecting screw is inserted, and the filter is configured by connecting the pair of end surface members attached to both ends of the filter body by the adapter and the connecting screw. Fix the body.

    The length of the filter body is 0.05 to 0.2 mm longer than the length of the cylindrical support member. A donut-shaped sheet made of an elastic material is provided between the filter body and the end face member.

  Further, the filter body was formed by bending one or more layers of metal filter media into a substantially wave shape with a sawtooth cross section, and the entire filter body was formed into a cylindrical shape.

  Moreover, a magnet is attached to the outer periphery or the end face of one or both of the pair of end face members.

  According to the present invention, an oil filter has a filter body in which one or a plurality of layers of filter media are bent in a zigzag shape, and the whole is bent in a cylindrical shape, and a pair having a recess into which an end of the filter body is fitted. And a connecting and fixing member for connecting and fixing a pair of end surface members attached to both ends of the filter body in a state where the cylindrical supporting member is disposed inside the filter body, and the cylindrical supporting member The end face member and the connecting and fixing member are made of metal and can be assembled and disassembled so that they can be attached and detached. The filter area can be prevented from decreasing, so that it can be used in place of the paper filter used for the oil filter of the replace type (only the content filter is replaced) The burden of gin can be reduced.

  In addition, if the filter medium used is made of metal (for example, stainless steel), the filter can be washed and reused, reducing the running cost, and is not disposable, so there is no disposal cost. There is no fear of polluting the environment with chemical substances when paper filter media is discarded without using adhesive.

  Further, the length of the filter body is 0.05 to 0.2 mm longer than the length of the cylindrical support member, or a donut-shaped sheet made of an elastic material is provided between the filter body and the end surface member. By being provided, when fixing with a screw, a force to press and press the filter medium is generated, so that there is no gap between the filter body and the end face member, and filtration accuracy can be ensured.

  In addition, when using a filter medium made of metal (for example, stainless steel), even when high temperature engine oil is filtered over a long period of time, the strength of the filter itself is not weakened, preventing deformation of the filter and reducing the filtration area. Reduction can be prevented.

  In addition, the filter body is formed by bending one or more layers of metal filter media into a substantially wave shape with a sawtooth cross section, and the entire body is formed into a cylindrical shape, thereby ensuring a predetermined filtration accuracy and surface. The shape of the filter can be maintained while maintaining the strength.

  In addition, magnets are attached to the outer circumference or end face of one or both of the pair of end face members, so that the metal powder that has become turbid in the oil due to wear or the like due to the rotation or reciprocation of the engine is adsorbed by the magnet of the magnet Can be removed.

  Hereinafter, an oil filter according to an embodiment of the present invention will be described with reference to the drawings. Here, the case where it has the filter main body which consists of metal filter media as an example is demonstrated.

  FIG. 1 is a perspective view showing a configuration of an oil filter 100 according to the first embodiment. FIG. 2 is an exploded view showing the configuration of the oil filter 100 according to the first embodiment. FIG. 3 is a cross-sectional view showing the configuration of the oil filter 100. FIG. 4 is a partially enlarged view showing a cross section of the filter main body 40.

  As shown in FIGS. 1, 2, and 3, the oil filter 100 includes an end face member 10 located at the upper end, an end face member 20 located at the lower end, a cylindrical support member 30, a filter body 40, and a fixed connection. It consists of three long screws 50 as members.

  The end face member 10 is a stainless steel cap-like member, and has a hole 11 formed at the center. Moreover, it has the recessed part 12 which inserts the edge part of the filter main body 40 in the single side | surface of the end surface member 10. As shown in FIG. Further, three holes 13 for inserting three long screws 50 as connecting and fixing members are equally provided. Furthermore, the outer diameter of the protrusion around the hole 11 is formed so as to be fitted to the inner diameter of the cylindrical support member 30.

  The end face member 20 is a cap made of stainless steel, has a hole in the center, and has a hole 21, and the inner surface of the hole 21 is attached to an oil filter case (not shown). A screw portion corresponding to the mounting structure of the oil filter case is formed. It should be noted that the threaded portion may not be formed depending on the mounting structure to the oil filter case. Moreover, it has the recessed part 22 which inserts the edge part of the filter main body 40 in the single side | surface of the end surface member 20. As shown in FIG. Further, three screw holes 23 for screwing three long screws 50 as connecting and fixing members are equally provided. Further, the outer diameter of the protrusion around the hole 21 is formed so as to be fitted with the inner diameter of the cylindrical support member 30.

  The cylindrical support member 30 is made of metal such as stainless steel, and is disposed inside the filter body 40 so as to support the inside of the filter body 40, and has a large number of through holes (punching holes) 31 on the side surface. The inner diameter of the cylindrical support member 30 can be fitted with the outer diameter of the protrusion around the hole 21, and the outer diameter can support the inside of the filter body 40. In addition, the cylindrical support member 30 is connected to the end surface members 10 and 20, the cylindrical support member 30, and the filter main body 40 with the long screw 50 in order to prevent excessive tightening. It also has a positioning function.

  The total area of punching holes in the cylindrical support member 30 is larger than the hole area of the cylindrical support member in the case cap so that the filtration resistance does not increase (pressure loss does not increase) and the flow rate does not decrease. .

  The filter body 40 is formed by bending a plurality of layers of filter media in a zigzag shape and bending the whole into a cylindrical shape. For example, as shown in Table 1 below, the filter body 40 is formed by using three layers of stainless steel filter media and bending the three layers of stainless steel filter media into a substantially wave shape (see FIG. 4) having a sawtooth cross section. The whole is bent into a cylindrical shape, and the mesh of the stainless steel filter medium 42 in the middle layer (second layer) is finer than the mesh of the stainless steel filter media 41 and 43 on both sides (first layer and third layer).

  Further, the length of the filter body 40 is made 0.05 to 0.2 mm longer than the length of the cylindrical support member 30. In this example, the length is 0.1 mm longer than the length of the cylindrical support member 30. Thereby, when fixing with the long screw 50, since the force which presses a filter medium (filter main body 40) and presses generate | occur | produces, there is no clearance gap between the filter main body 40 and the end surface members 10 and 20, and filtration accuracy is ensured. can do. When the difference in length between the filter main body 40 and the cylindrical support member 30 is smaller than 0.05 mm, a gap may be left between the filter main body 40 and the end face members 10 and 20 during assembly. On the other hand, when the difference in length between the filter main body 40 and the cylindrical support member 30 is larger than 0.2 mm, the filter main body 40 is pressed at the time of assembly and deformation becomes large.

  FIG. 4 is a local enlarged view of a cross section when a three-layer stainless steel filter medium is used. In FIG. 4, the outline of the cross-sectional local part of the filter main body 40 is shown. In order to clearly show each layer, the layers are shown as being separated from each other, but in actuality, the layers are in contact with each other.

  The filter body 40 is formed by, for example, using four-layer or two-layer filter media as shown in Tables 2 and 3 below. You may make it compose.

  In the case of Table 3, only the filter paper of the second layer is replaced, and other parts are cleaned and reused. Thus, the filter paper can be configured without using an adhesive when forming the filter paper into a circular shape, which is a disadvantage of the replace-type oil filter. Moreover, since the adhesive is not used when discarding, if the oil attached to the used filter paper is dropped to some extent and does not sag, it can be taken out as burning garbage.

  The long screw 50 uses a countersunk screw so as not to be exposed from the surfaces of the end face members 10 and 20. When the oil filter 100 is assembled, the hole of the end face member 10 attached to one end of the filter body 40 using the three long screws 50 in a state where the cylindrical support member 30 is disposed inside the filter body 40. 13 is inserted and screwed into a screw hole of the end face member 20 attached to the other end of the filter body 40, so that the end face members 10, 20, the cylindrical support member 30, and the filter body 40 are connected and fixed. Has been made.

  Further, in order to use the conventional replace type oil filter case as it is, the outer dimensions of the oil filter 100 are formed in the same manner as the conventional paper filter.

  As described above, in the present embodiment, the oil filter 100 includes the end surface members 10 and 20, the cylindrical support member 30, the filter main body 40, and the three long screws 50 serving as connection fixing members. . The filter body 40 is formed by overlapping three layers of stainless steel filter media and bending them into a substantially wave shape with a sawtooth cross section. The entire filter body 40 is formed into a cylindrical shape, and the mesh of the intermediate (second layer) stainless steel filter media 42 is The meshes of the stainless steel filter media 41 and 43 on both sides (first layer and third layer) are finer.

  This eliminates the need for adhesives and keeps the shape of the filter firmly in the shape of a fold and prevents the reduction of the filtration area. Therefore, replace type (replace only the filter inside) oil. It can be used in place of the paper filter used for the filter, and the burden on the engine can be reduced.

  In addition, each part of the oil filter can be assembled and disassembled freely, so that the filter can be washed and reused, and when paper filter media is discarded without using adhesive. There is no risk of polluting the environment with chemical substances.

  In addition, the use of stainless steel filter media prevents the filter itself from weakening even under conditions where high temperature engine oil is filtered over a long period of time, preventing deformation of the filter body and preventing reduction in the filtration area. be able to.

  In addition, a predetermined level of filtration accuracy can be ensured with the middle-layer stainless steel filter medium, and larger dust can be removed from the stainless steel filter medium on both sides to maintain the surface strength and maintain the shape of the filter body.

  Next, an oil filter according to a second embodiment of the present invention will be described. FIG. 5 is an exploded view showing the configuration of the oil filter 200 according to the second embodiment. FIG. 6 is a cross-sectional view showing the configuration of the oil filter 200.

  As shown in FIGS. 5 and 6, the oil filter 200 includes an end face member 10 located at the upper end, an end face member 20 located at the lower end, a cylindrical support member 30, a filter body 40, and a connection fixing member. It consists of three adapters 61 and six screws 62.

  In the oil filter 200, the configurations of the end face member 10, the cylindrical support member 3, and the filter body 40 are the same as those in the first embodiment described above. Detailed description thereof is omitted.

  The end face member 20A has the same configuration as the end face member 20 of the first embodiment described above except that three holes 23 for inserting the screws 62 are provided.

  The adapter 61 is a cylindrical or prismatic body made of a metal such as stainless steel, and screw holes for screwing screws 62 are provided at both ends. As the screw 62 is not exposed from the surface of the end face members 10 and 20, a countersunk screw is used.

  As described above, in the present embodiment, the oil filter 200 includes the end face member 10 located at the upper end, the end face member 20A located at the lower end, the cylindrical support member 30, the filter main body 40, and the connection fixing member. It consists of three adapters 61 and six screws 62. The filter body 40 is formed by overlapping three layers of stainless steel filter media and bending them into a substantially wave shape with a sawtooth cross section. The entire filter is bent into a cylindrical shape, and the mesh of the stainless steel filter media of the middle layer (second layer) is: It is finer than the mesh of stainless steel filter media on both sides (first layer, third layer).

  Thereby, the effect similar to the oil filter 100 of 1st Embodiment mentioned above can be acquired.

  Further, by using the three adapters 61 and the six screws 62 as the connecting and fixing member, the adapter 61 can be disposed before the end face members 10 and 20 are mounted, and the filter medium is damaged due to the insertion of the long screws. Can be prevented.

  In the above-described embodiment, the filter main body 40 is a three-layer stainless steel filter medium, and the filtration accuracy of the first layer and the third layer is 70 μm, and the filtration accuracy of the second layer is 20 μm. However, the present invention is not limited to this. Stainless steel filter media can be selected based on the requirements of filtration accuracy.

  Table 4 shows the correspondence between the filtration accuracy and the mesh of stainless steel filter media (number of eyes per inch).

  In the above-described embodiment, the case where a plurality of layers of metal filter media or a combination of metal filter media and filter paper is used has been described. However, the present invention is not limited to this. For example, one layer of the filter medium may be bent in a zigzag shape and the whole may be bent into a cylindrical shape.

  Moreover, in embodiment mentioned above, you may make it mount a magnet on the outer periphery of one or both of a pair of end surface members 10 and 20. FIG. In this case, by attaching the magnet, the metal powder generated by wear or the like due to the rotation or reciprocation of the engine and turbid in the oil can be adsorbed and removed by the magnetism of the magnet body.

  FIG. 7 is a diagram illustrating a configuration example when a magnet is mounted. As shown in FIG. 7, a ring-shaped magnet 70 </ b> A is attached to the outer periphery of the end face member 10. In this case, a cut-out portion corresponding to the width and thickness of the magnet 70A is provided on the outer periphery of the end face member 10, and a step having a stopper function is provided at the lower end. The ring-shaped magnet 70A is fixed with a screw or a heat-resistant adhesive. With such a configuration, the outer dimensions of the oil filter do not change, and attachment to an existing oil filter case can be facilitated. In addition, since the end surface member 10 is not discarded, there is no problem in using the adhesive here. Further, it may be mounted on the end face of the end face member 20.

  FIG. 8 is a diagram illustrating another configuration example when a magnet is mounted. As shown in FIG. 8, one end of a rectangular plate-like magnet 70 </ b> B is attached to the end face member 10, and the other end is attached to the end face member 20. In this case, a plurality of mounting screw holes are equally provided on the outer periphery of the end surface members 10 and 20. The plate-like magnet 70B has, for example, a surface with a curve rate similar to that of the outer peripheral surface of the end face members 10 and 20, and through holes for fixing with screws are provided at both ends. The magnets 70B are equally attached to a plurality of locations with respect to the circumference of the oil filter. Such a configuration can be easily processed. It should be noted that the thickness, width, and number of the magnets 70B can be freely selected according to the use application of the oil filter, the vehicle type, and the like.

  FIG. 9 is a diagram illustrating another configuration example when a magnet is mounted. As shown in FIG. 9, a plurality of ring-shaped magnets 70 </ b> C are attached to the end face member 10 and the end face member 20. In this case, a plurality of mounting screw holes are equally provided on the outer periphery of the end surface members 10 and 20. The ring-shaped magnet 70C has, for example, a curved surface similar to the outer peripheral surface of the end surface members 10 and 20, and is fixed with screws. The magnets 70 </ b> C are evenly attached to a plurality of locations with respect to the circumference of the end surface members 10 and 20. Such a configuration can be easily processed and uses a small magnet, so that the cost can be reduced. It should be noted that the thickness, width, and number of magnets 70C can be freely selected depending on the intended use of the oil filter, vehicle type, and the like.

  FIG. 10 is a diagram illustrating another configuration example when a magnet is mounted. As shown in FIG. 10, a thin ring-shaped (donut-shaped) magnet 70 </ b> D is mounted on the end surface of the end surface member 10. In this case, a cut-out portion is provided on the end face of the end face member 10 to form a concave shape. The donut-shaped magnet 70D is fixed with a screw or a heat-resistant adhesive. With such a configuration, the outer dimensions of the oil filter do not change, and attachment to an existing oil filter case can be facilitated. In addition, since the end surface member 10 is not discarded, there is no problem in using the adhesive here. Further, it may be mounted on the end face of the end face member 20.

  In the above-described embodiment, the filter main body 40 has been described using the three long screws 50 or the three adapters 61 and the six screws 62 as the connecting and fixing member. It is not something. The number of long screws 50 and adapters 61 may be two or four. Moreover, you may use screws other than a countersunk screw.

  In the above-described embodiment, the length of the filter body is 0.05 to 0.2 mm longer than the length of the cylindrical support member. However, the present invention is not limited to this. For example, the length of the filter body may be the same as the length of the cylindrical support member, and a donut-shaped sheet made of an elastic material may be provided between the filter body and the end surface member. In this case, as the sheet, a donut-shaped O-ring, heat-resistant rubber, heat-resistant sponge, or the like can be considered. By providing the doughnut-shaped sheet, a force for pressing and pressing the sheet is generated when the sheet is fixed with screws, so that there is no gap between the filter main body and the end surface member, and filtration accuracy can be ensured.

  INDUSTRIAL APPLICABILITY The present invention can be used for an oil filter that filters oil circulated and supplied in an internal combustion engine such as a generator, a ship, a construction machine, an airplane, and an automobile. The present invention can be used for the purpose of providing an oil filter that can be reused repeatedly by removing and cleaning impurities clogged in the filter instead of the paper filter used for the filter.

It is a perspective view which shows the structure of the oil filter 100 of 1st Embodiment. It is an exploded view showing composition of oil filter 100 of a 1st embodiment. It is sectional drawing which shows the structure of the oil filter 100 of 1st Embodiment. It is a local enlarged view of the cross section at the time of using a three-layer stainless steel filter medium. It is an exploded view which shows the structure of the oil filter 200 of 2nd Embodiment. It is sectional drawing which shows the structure of the oil filter 200 of 2nd Embodiment. It is a figure which shows the structural example in the case of mounting | wearing with a magnet. It is a figure which shows the other structural example in the case of mounting | wearing with a magnet. It is a figure which shows the other structural example in the case of mounting | wearing with a magnet. It is a figure which shows the other structural example in the case of mounting | wearing with a magnet. It is a figure which shows the structure of the conventional paper filter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Paper filter 2 Filter paper 3 End face plate 10,20,20A End surface member 11,21 Hole 12,22 Recess 13,23 Hole 30 Cylindrical support member 31 Punching hole 40 Filter body 41 First layer filter medium 42 Second layer filter medium 43 Filter material for the third layer 50 Long screw 61 Adapter 62 Screw 70A, 70B, 70C, 70D Magnet 100, 200 Oil filter

Claims (1)

A filter body in which a plurality of layers of metal filter media are stacked and bent in a zigzag shape, and the whole is bent into a cylindrical shape,
A cylindrical support member disposed inside the filter body so as to support the inside of the filter body and having a number of through holes on the side surface;
A pair of end surface members having a recess that is opened in the central portion and that fits the end of the filter body on one side;
In a state where the cylindrical support member is disposed inside the filter main body, a connection fixing member that connects and fixes the pair of end surface members attached to both ends of the filter main body,
The cylindrical support member, the end face member, and the connection fixing member are made of metal and are provided so as to be detachable and attachable to each other.
A magnet is attached to the outer periphery of one or both of the pair of end surface members,
In the filter body, the mesh of metal filter media middle is constructed rather small than the mesh of the two sides of the metal filter media,
The connection fixing member is provided with screw holes at both ends, a plurality of adapters having a length corresponding to the length of the filter body, and a plurality of connection screws screwed into the screw holes at both ends of the adapter.
The pair of end surface members are provided with a plurality of holes through which the connecting screw is inserted,
The filter body is fixed by connecting the pair of end surface members attached to both ends of the filter body by the adapter and a connection screw,
The length of the filter body is 0.05 to 0.2 mm longer than the length of the cylindrical support member .

Images