Oil filter assembly having rotation type drain pin

Patent metadata

Field	Value
Publication number	US-2016136548-A1
Application number	US-201514939818-A
Country	US
Kind code	A1
Filing date	Nov 12, 2015
Priority date	Nov 13, 2014
Publication date	May 19, 2016
Grant date	—

Abstract

An oil filter module may include a casing and a filter therein. The oil filter module may also include a cap coupled to the casing, and including a drain nipple protruding downward from a portion of the cap corresponding to a bottom support plate of the filter with a drain hole formed in the drain nipple. The oil filter module may further include a drain pin coupled to the drain nipple so as to be removable so that the drain hole is open or closed by the drain pin. A rotation groove having a rotating axis of the casing may be formed in a lower surface of the bottom support plate. The drain hole may be formed at a position corresponding to the rotation groove, and the drain pin may be seated at one end thereof onto a bottom of the rotation groove when the drain pin is coupled to the drain nipple.

First claim

1 . An oil filter module comprising:
a casing having an open end; a filter installed in the casing and including:
a pipe-shaped support frame having a plurality of openings in a sidewall thereof;
a filter paper enclosing an outer surface of the support frame;
an upper support plate coupled to the support frame and configured to cover an upper end of the filter paper; and
a bottom support plate coupled to the support frame and configured to cover a lower end of the filter paper;
a cap threadedly coupled to the casing to cover the open end of the casing, the cap including a drain nipple protruding downward from a portion of the cap corresponding to the bottom support plate, with a drain hole formed in the drain nipple; and a drain pin coupled to the drain nipple so as to be removable so that the drain hole formed in the drain nipple is opened or closed by the drain pin, wherein an annular rotation groove having a rotating axis of the casing as a central axis thereof is formed in a lower surface of the bottom support plate, the drain hole is formed at a position corresponding to the rotation groove, and the drain pin is seated at one end thereof onto a bottom of the rotation groove when the drain pin is coupled to the drain nipple.

2 . The oil filter module according to claim 1 , wherein the drain pin comprises:
a pin body inserted into the drain hole in a force-fitting manner; a slide block seated on the bottom of the rotation groove and formed on a first longitudinal end of the pin body in a block shape such that the slide block can slide along the rotation groove when the cap is rotated in a direction in which the cap is threadedly rotated; a handle provided on a second longitudinal end of the pin body and exposed outside the drain nipple; and a sealing element provided to enclose an outer surface of the pin body.

3 . The oil filter module according to claim 2 , wherein the rotation groove is formed such that a bottom width thereof is less than an entrance width thereof,
a longitudinal length of the slide block is greater than the entrance width of the rotation groove, and a lateral width of the slide block is less than the entrance width of the rotation groove.

4 . The oil filter module according to claim 3 , wherein the slide block is made of a material having an elasticity higher than a reference value, and
when the drain pin is oriented such that a longitudinal direction of the slide block corresponds to a diameter direction of the rotation groove, a longitudinal end of the slide block comes into contact with an inner sidewall of the rotation groove.

5 . The oil filter module according to claim 3 , wherein a longitudinal end of the slide block has a curved shape corresponding to a curvature of the inner sidewall of the rotation groove.

6 . The oil filter module according to claim 2 , wherein a marking slot having a length in a diameter direction of the drain nipple is formed in a protruding end of the drain nipple,
the handle has a plate shape extending downward, and when the drain pin is oriented such that a longitudinal direction of the slide block corresponds to a diameter direction of the rotation groove, opposite lateral sides of the handle corresponds to the marking groove.

7 . The oil filter module according to claim 4 , wherein a longitudinal end of the slide block has a curved shape corresponding to a curvature of the inner sidewall of the rotation groove.

8 . The oil filter module according to claim 3 , wherein a marking slot having a length in a diameter direction of the drain nipple is formed in a protruding end of the drain nipple,
the handle has a plate shape extending downward, and when the drain pin is oriented such that a longitudinal direction of the slide block corresponds to a diameter direction of the rotation groove, opposite lateral sides of the handle corresponds to the marking groove.

9 . The oil filter module according to claim 4 , wherein a marking slot having a length in a diameter direction of the drain nipple is formed in a protruding end of the drain nipple,
the handle has a plate shape extending downward, and when the drain pin is oriented such that a longitudinal direction of the slide block corresponds to a diameter direction of the rotation groove, opposite lateral sides of the handle corresponds to the marking groove.

10 . The oil filter module according to claim 5 , wherein a marking slot having a length in a diameter direction of the drain nipple is formed in a protruding end of the drain nipple,
the handle has a plate shape extending downward, and when the drain pin is oriented such that a longitudinal direction of the slide block corresponds to a diameter direction of the rotation groove, opposite lateral sides of the handle corresponds to the marking groove.

11 . An oil filter module comprising:
a casing having an open end; a filter installed in the casing and including:
a pipe-shaped support frame having a plurality of openings in a sidewall thereof;
a filter paper enclosing an outer surface of the support frame;
an upper support plate coupled to the support frame and configured to cover an upper end of the filter paper; and
a bottom support plate coupled to the support frame and configured to cover a lower end of the filter paper;
a cap threadedly coupled to the casing to cover the open end of the casing, the cap including a drain nipple protruding downward from a portion of the cap corresponding to the bottom support plate, with a drain hole formed in the drain nipple; and a drain pin coupled to the drain nipple so as to be removable so that the drain hole formed in the drain nipple is opened or closed by the drain pin, the drain pin including:
a pin body inserted into the drain hole in a force-fitting manner;
a slide block seated on the bottom of the rotation groove and formed on a first longitudinal end of the pin body in a block shape such that the slide block can slide along the rotation groove when the cap is rotated in a direction in which the cap is threadedly rotated;
a handle provided on a second longitudinal end of the pin body and exposed outside the drain nipple; and
a sealing element provided to enclose an outer surface of the pin body.
wherein an annular rotation groove having a rotating axis of the casing as a central axis thereof is formed in a lower surface of the bottom support plate, the drain hole is formed at a position corresponding to the rotation groove, and the drain pin is seated at one end thereof onto a bottom of the rotation groove when the drain pin is coupled to the drain nipple.

Assignees

• Mahle Int Gmbh

Inventors

• Byun Sangpil
• Park Giwon

Classifications

• B01D35/153 Primary

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• B01D35/005

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• F02M37/22

  Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system · CPC title

• B01D35/30

  Filter housing constructions · CPC title

• B01D2201/4015

  Bayonet connecting means · CPC title