JPS6012564Y2 - oil filter device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an oil filter device that includes a full-flow filter and a bypass filter.

Conventionally, in this type of device, a full-flow filter and a bypass filter have been integrated by adhesive.

Therefore, it requires a high number of man-hours to form a unit, and it is difficult to bring out the core of both.

This idea was devised in view of these points, and it is an oil filter device in which it is easy to integrate a full-flow filter and a bypass filter, their cores match, and it is easy to separate the flow paths. The purpose is to obtain.

This idea involves forming a cylindrical peripheral surface on the partition wall that fits into the center pipe installed upright on the bracket, and placing a full-flow filter and a bypass filter facing each other on this peripheral surface with a backing interposed between them. Since it is integrated with the engaging part formed on the peripheral surface, it can be integrated by mechanical means of forming the engaging part, so the workability is high, and centering of the two is easy. By virtue of the presence of the partition wall, it is possible to easily form two flow paths.

An embodiment of this invention will be explained based on the drawings.

First, bracket 1 is attached to the fuselage or other fixed parts.
The bracket 1 is provided with an oil inlet section (not shown), an outlet section 2 to the engine, and an outlet section 3 to the oil pan (not shown).

A hollow rod-shaped center pipe 4 and a tubular large-diameter pipe 5 that is shorter than the center pipe 4 and has a predetermined gap between it and its outer peripheral surface are attached to the bracket 1 in the same layer. ing.

The inside of the center pipe 4 and the outlet section 3 communicate with each other, and the inside of the large diameter pipe 5 and the outlet section 2 communicate with each other.

The end surface of the large-diameter pipe 5 is open, and the end surface of the center pipe 4 is formed with a threaded portion 6 and a communication hole 7 that communicates with the outer peripheral surface.

Next, a filter unit 8 is provided.

The filter unit 8 includes a partition wall 9, a full flow filter 10, and a bypass filter 11.

The partition wall body 9 includes a bottom surface 12 and a cylindrical circumferential surface 13, and a backing 14 is attached to the bottom surface 12, which airtightly fits onto the outer circumferential surface of the center pipe 4.

A backing 15 is hermetically fitted to the circumferential surface 13, and the full flow filter 10 and bypass filter 11 are provided so as to sandwich this backing 15.

That is, the inner end plates 16. of these filters 10.11.
The edge of the backing 17 is positioned and integrated with the backing 15 by a protrusion 18, which serves as a retaining part, which is punched out and formed on the circumferential surface 13 so as to sandwich the backing 15.

Further, the outer end plate 19 of the full-flow filter 10 is provided with a backing 20 that is joined to the bracket 1, and the outer end plate 21 of the bypass filter 11 is provided with a backing 22 that is fitted onto the center pipe 4. ing.

Next, a case 24 is provided which is attached to the bracket 1 with a backing 23 interposed therebetween.

This case 24 is open at one end, and has a bottom surface 25...
・The washer 26 is actually located at the top.
It is fixed by a fixing bolt 28 which is screwed into the threaded hole 6 of the center pipe 4 with a backing 27 interposed therebetween.

A holder 30 having an annular recess 29 is fixed to the inner surface of the bottom surface 25 of the case 24, and a spring retainer 31 is attached to the holder 30.

The spring retainer 31 includes a compression spring 32 and a pressing plate 33 fixed to the compression spring 32, and the compression spring 32 is fitted into the recess 29 and held.

In such a configuration, oil entering the interior through the oil inlet reaches the outer circumference of the filter unit 8 and is filtered by the filter unit 8.

One side passes from the full-flow filter 10 through the large-diameter pipe 5 and reaches the engine from the outlet portion 2.

The other one passes from the bypass filter 11 through the communication hole 7, passes through the inside of the center pipe 4, and returns to the oil pan from the outlet portion 3.

The reason why two flow paths are formed is that the filter unit 8 is completely divided by the partition wall 9, and this division is also ensured by integrating the backing 15. It is.

Since the full-flow filter 10 and the bypass filter 11 are integrated by the protrusion 18 and processed on the peripheral surface 13, the centering of the two is reliably performed.

Therefore, in order to replace the filter unit 8, the fixing bolt 28 is removed, the case 24 is opened, the filter unit is pulled out from the center pipe 4, and a new one is installed.

During this replacement work, the spring retainer 31 is
Since the spring retainer 31 is not separated while attached to the spring retainer 31, there is no need to lose the spring retainer 31, and there is no need for alignment at times during installation, making the work easy.

This idea involves forming a cylindrical peripheral surface on the partition wall that fits into the center pipe erected on the bracket as described above, and arranging the full-flow filter and the bypass filter to face each other with a backing interposed on this peripheral surface. Since these are integrated by a retaining part formed on the circumferential surface, the workability is high because they can be integrated by mechanical means of forming the engaging part, and moreover, alignment of the two is easy. Because of the presence of the partition wall, it is possible to easily form two flow paths.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, in which FIG. 1 is a longitudinal sectional side view, FIG. 2 is an enlarged sectional view of a spring retainer portion, and FIG. 3 is an enlarged sectional view of a filter coupling portion. 1... Bracket, 4... Center pipe, 9... Partition body, 10... Full flow filter, 11... Bypass filter,
15...Backing, 18...Protrusion (
case), 24... case.

Claims (1)

[Scope of utility model registration request] A bracket on which a center pipe is erected and a case attached to the bracket are provided, and a partition body that fits airtightly into the center pipe and has a circumferential surface parallel to the axis is provided, and the circumferential surface of the partition body is provided with a An oil filter device characterized in that a full-flow filter and a bypass filter are integrally fixed along the axial direction by a retaining portion formed on the partition wall with a backing that fits airtightly interposed therebetween.