JPH0751125Y2 - Cartridge type oil filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present application relates to a cartridge type oil filter used for filtering lubricating oil of a natural engine, for example.

[Prior Art] As is well known, the cartridge type oil filter is
The filter element is arranged in a cylindrical case having an open end, and the open end is covered with a cover plate. The cover plate is composed of a thick plate having an inflow / outflow port and a thin plate, which are integrated with each other, and the outer periphery of the thin plate is caulked to the open end peripheral edge of the cylindrical case to integrally fix the cylindrical case and the cover plate. To be done. The thick plate and the thin plate are integrated by mechanical engagement rather than welding by welding or the like.

As a conventional filter having such a purpose, one having a structure shown in the specification of Japanese Utility Model Publication No. 61-204605 is known. That is, as shown in FIG. 5, the reinforcement plate 1 having the inlet 4a around the outlet 1a and the closure plate 4 having the tubular portion 4b are engaged with the tubular portion 4b on the inner wall of the inlet 4a. The closure plate 4 is integrated by being fixed, and the outer periphery of the closure plate 4 is tightly wound around and fixed to the open end of the container 2. here,
The closure plate 4 is further provided with a rising portion 4d, and the rising portion is bent to form a drop-out preventing portion 4d 'that covers the front end of the annular gasket 5.

In the above-mentioned conventional structure, the drop-off preventing portion 4d 'is formed by the closure plate 4 between the adjacent tongue-shaped engaging portions 4c, so that the closure plate 4 at that portion is omitted. Therefore, the closure plate 4 becomes discontinuous in the circumferential direction, and the engaging portions 4c are intermittently formed, which causes a problem that the structural strength decreases.

Therefore, the present inventor has proposed the structure shown in FIG. 6 as a solution to this drawback. That is, a thick plate having an outflow port 10 in the center and a plurality of inflow ports 11 around the outflow port 10.
12 and a thin plate 16 having an opening 13 at the center and an annular rising wall 14 along the circumference of the outer periphery thereof and an opening 17 provided with a holding portion 15 at the outer peripheral side edge alternately, and the thin plate 16 of the thin plate 16. The annular rising wall 14 is fitted and integrated with the inflow port 11 of the thick plate 12, and the inflow port 11 adjacent to the inflow port is communicated with the opening 17 in which the holding portion 15 is provided. There is.

[Problems to be Solved by the Invention] Since the thin plate 16 is continuous without being divided in the circumferential direction in the above-mentioned proposal, the disadvantage that the structural strength in the sense of the prior art is lowered is solved. However, in the proposal, the width between the edge of the opening 17 provided with the holding portion 15 of the thin plate 16 on the opposite side of the holding portion 15 and the inner peripheral edge of the thin plate 16 is reduced, and the structure is defined in another sense. It reduces strength.

[Means for Solving the Problems] A filter element is arranged in a cylindrical case, the open end of the cylindrical case is covered with a cover plate composed of a thick plate and a thin plate, and the thin plate outer periphery and the open end of the cylindrical case are caulked and integrated. In the cartridge type oil filter described above, a thick plate having an outflow port in the center and a plurality of inflow ports in the periphery thereof, and an annular rising wall and an inflow port having an opening in the center thereof and further having an inner periphery on the outer periphery thereof are provided. A thin plate having an opening provided with a holding portion on the peripheral side is integrated by fitting an annular rising wall of the thin plate to an inlet of the thick plate,
The cover plate has a thin plate inlet and another thick plate inlet communicating with each other, and the flange portion of the packing having the flange portion is sandwiched between the holding portions.

[Operation] An external force may be applied to the thin plate forming the cover plate of the cartridge type filter to separate it from the thick plate. In that case, the external force is such that the thin plates are continuous in the circumferential direction. The stress is reduced in comparison with the case of discontinuity. The width between the inner circumference of the thin plate and the opening having the holding portion is increased to enhance the structural strength.

[Embodiment] FIGS. 1 to 3 show an embodiment of the present invention in which a filter element 21 is disposed in a cylindrical case 20 having one end open, and the open end of the cylindrical case 20 is covered with a cover plate 22. It has a covered structure. The cover plate 22 is formed by integrally integrating the thin plate 24 with the disk-shaped thick plate 23. The plank 23 has a central threaded outlet 25 and a plurality of inlets 26 around it. Sheet 24
As shown in FIG. 4 (b), is a rectangular shape having an opening 27 in the center, an annular rising wall 28 on the outer periphery of the opening 27, and a holding portion 31 on the inner peripheral edge of the rising wall 28. Openings 29 and 29 are provided respectively. An inflow port 26 'is provided between the annular rising walls 28. The holding portion 31 has a U-shaped cut groove formed in a predetermined portion of the thin plate 24, forms an opening 29, is lifted leaving an edge on the inner peripheral side, and the tip side thereof is bent parallel to the surface of the thin plate 24. Is obtained by The holding portion 31 is positioned so as to cover the opening 29 above. Ring rising wall 28 and holding part
31 and 31 are projected in mutually opposite directions. The annular rising wall 28 of the thin plate 24 is fitted into the inflow port 26 of the thick plate 23 and mechanically engages with it. The other inlet 26 of the thick plate 23 communicates with the inlet 26 'of the thin plate 24. On one surface of the thin plate 24 of the cover plate 22,
The packing 32 is provided, and the flange portion 32a of the packing 32 is held by the holding portion 31 of the thin plate 24. Flange 32a
Is a holding portion 31 with the opening 29 of the thin plate 24 partially closed.
Sandwiched between. The outer peripheral edge of the thin plate 24 of the cover plate 22 is crimped to the open end edge of the cylindrical case 20.

The oil flows into the cylindrical case 20 through the inflow port 26 ′ of the thin plate 24 of the cover plate 22 and the annular rising wall 28, flows through the filter element 21 to be filtered, and then flows out toward the outflow port 25. .

[Effects] As described above, according to the present invention, the thin plate and the thick plate are mechanically integrated while the thin plate is continuous in the circumferential direction without being divided, and the thin plate is provided with an opening provided with a holding portion. Since the width between the inner circumference of the thin plate and the opening edge is set larger on the outer peripheral side of the plate, when an external force is applied to the thin plate, the force is dispersed and acts on the fitting part between the thin plate and the thick plate. However, the risk of the thin plate and the thick plate coming off is reduced, and the structural strength is further improved.

[Brief description of drawings]

1 is a sectional view of an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a partial perspective view of a cover plate, FIG. 4 is a partial perspective view of a thin plate, and FIG. It is a partial perspective view of the filter of FIG. FIG. 6 is a partial perspective view of the filter proposed by the present inventor. 20 …… Cylindrical case, 21 …… Filtration element 22 …… Cover plate, 23 …… Thick plate 24 …… Thin plate, 27, 29 …… Opening 28 …… Annular rising wall, 31 …… Holding part

Claims (1)

[Scope of utility model registration request] 1. A cartridge type oil in which a filter element is disposed in a cylindrical case, an open end of the cylindrical case is covered with a cover plate composed of a thick plate and a thin plate, and the thin plate outer periphery and the open end of the cylindrical case are caulked and integrated. In a filter, a thick plate having an outflow port in the center and a plurality of inflow ports around it, and an annular rising wall and an inflow port having an opening in the center and being held on the inner circumference side of the outer circumference A thin plate having an opening provided with a portion is integrated by fitting an annular rising wall of the thin plate to the inlet of the thick plate, and the inlet of the thin plate and another inlet of the thick plate are communicated with each other to form a cover plate. A cartridge type oil filter characterized in that a flange portion of a packing having a flange portion is sandwiched between the holding portions.