DE7207753U - Filter insert with star-shaped folded filter element for air filters in internal combustion engines and the like - Google Patents

Description

Applicant: Knecht Filterwerke

society with limited liability

7000 Stuttgart - 50 Haldenstrasse

"Filter insert with a star-shaped folded filter element for air filters of internal combustion engines and the like. "

The invention relates to an end face with cover rings provided filter insert, the filter element of which is made of a star-shaped folded filter material web made of impregnated paper od. the like. exists.

It is known to use the air flow generated when the engine is running uldunst from the crankcase by means of a line via pipe sockets on the intake pipe or on the housing base. of the air filter in the raw gas space of the filter housing. Here had to be accepted that the entire filter surface is acted upon in undesirable catfish by oil vapor and that the a filter had to be assigned to the oil vapor line.

The invention is based on the known problem »the filter in To make the oil vapors and pipe sockets on the intake pipe or on the housing base dispensable and the oil vapor directly to one to guide limited sector of the folded filter elements, with only a few fold sections taken up will*

This object is achieved according to the invention in that one two Map sections of a sector of the filter element gripping, old the face cover ring disks in the potting connected molded piece made of plastic by means of a pipe socket that can be plugged from the inside through the ophthalmic wall, the connection for old art production.

This fitting consists of the. Invention from an adapted to the outer circumference of the perforated protective jacket of the filter insert Plate, from the end of which slotted grippers each gripping a fold section of the filter element obliquely inwards stretch into which Sless strips are inserted from Isnen »

In an embodiment of the invention, convex beads are provided on the terminal strips near their inner end, which when inserted of the clamping strips snap into the fold sections gripped by the grippers in round grooves that are arranged on the inside of the gripper halves »

To make it easier to insert the filter insert into the housing, If the pipe socket of the fitting is provided eccentrically and slightly angled, and a sealing ring surrounding it serves as a spacer between the filter insert and the housing wall

In a further embodiment of the invention, the fitting has its curved plate outgoing stop ribs, against which the prefabricated filter element is supported when potting with the cover ring disks.

In the drawing, an embodiment of the invention is shown, and show it

Fig. 1 is a partial cross-section through the filter insert and the housing accommodating it,

Fig. 2 is a section through the one fold portion of the Filter element detecting and molded with it molded piece according to line I - I of Fig. 1, and

Fig. 3 is a side view of one of the grippers of the fittings * assigned terminal strip.

Designate in the exemplary embodiment

Section 1

Section 2

Clause 3

Clause 4

Clause 5

Digit Digit

6 7

Item 8 Item 9

Section 10 Section 11

Item 12 Items 13 and 14 Section 15 Section 16 Section 17

Clause 18

the housing together with the inserted filter insert, the housing wall, the filter insert, the star-shaped folded filter element, the outer perforated protective jacket of the

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One fold section each & filter element 4, the sector of the filter element 4 bounded by the sections 6, the molded piece connected to the filter element and its cover ring disks, the plate of the fitting 8, which is adapted to the outer diameter of the filter insert, the slotted grippers on the fitting 8, the terminal strips inserted into the gripper wire, the pipe socket of the fitting 8, the stop ribs emanating from the fitting plate, the inside round grooves of the grippers 10, the convex beads on the clamping strips 11, the sealing ring between the filter insert 3 and the housing wall Z ₉ and the oil vapor line to the crankcase of the not internal combustion engine shown.

Claims (4)

1. Filter insert with star-shaped folded filter element and end face cover ring disks in connection with an oil vapor line emanating from the crankcase of an internal combustion engine, characterized in that two fold sections (6) of a sector (7) of the filter element (4) Clamping molded piece (8) made of plastic and connected to the front cover ring disks in the potting compound the connection to the Oil vapor line (18) produces. 2. Filter insert according to claim 1, characterized in that the shaped piece (8) from one of the outer circumference of the perforated Protective jacket (5) of the filter insert (3) Jbastehx
fitted plate (9η slotted from the ends of each one fold section (6) of the filter element (4) gripping gripper (10) extend obliquely inward, into which terminal strips (11) are inserted from the inside. 3. Filter insert according to claims 1 to 2 _9, characterized in that on the terminal strips (11) close © the inner end of the convex beads (16) provided & ίηύ * which when the terminal strips are inserted into the of d® & i (10) the recorded fold sections (6) snap into round grooves which are arranged on the inside of the gripping halves are. 4. Filter insert according to claims 1 to 3 »characterized in that that the pipe socket (12) of the fitting (8) is provided eccentrically and arranged at a slight angle is, and that a sealing ring (17) surrounding it as a spacer between the filter insert (3) and the housing wall (2) serves. Filter insert according to Claims 1 to 4, characterized in that that the shaped piece (8) has stop ribs (13, 14) extending from its curved plate (9), against which the prefabricated filter element (4) is supported during encapsulation with the cover ring disks.