Exchangeable filter of a filter device for fluid, filter device, and filter head of a filter device

Patent metadata

Field	Value
Publication number	US-10202952-B2
Application number	US-201614988581-A
Country	US
Kind code	B2
Filing date	Jan 5, 2016
Priority date	Jan 12, 2015
Publication date	Feb 12, 2019
Grant date	Feb 12, 2019

Abstract

An exchangeable filter has a filter housing, a filter element, and a connecting member arranged at a filter housing end face. A filter-associated connecting part of a connecting device detachably connects the exchangeable filter with a filter head of a filter device by a plug-in/rotary movement. A filter-associated locking part of a locking device locks the connecting device in a locked state automatically and releasably by the plug-in/rotary movement with a head-associated locking part of the locking device provided at the filter head. The filter-associated locking part has a latching section latching with a head-associated latching section of the head-associated locking part. The filter-associated locking part has a support section on a side of the filter-associated locking part facing away radially from the filter-associated latching section. The support section radially supports the filter-associated locking part relative to the circumferential section of the filter housing in the locked state.

First claim

What is claimed is:

1. An exchangeable filter comprising:
a filter element of a filter medium encircling a filter axis extending through an open interior of the filter element, the filter element comprising:
a connecting end disk, secured onto a first axial end of the filter medium, wherein the connecting end disk has a coaxial outlet opening extending through the connecting end disk and into the open interior;
the connecting end disk having:
a tubular receiving cylinder having an open interior, the tubular receiving cylinder having a first end secured onto an axially outer surface of the connecting end disk at the coaxial outlet opening such that the coaxial outlet opening continues through the tubular receiving cylinder;
a plurality of radially extending support ribs arranged on a radially outer surface of the tubular receiving cylinder, the radially extending support ribs arranged on the axially outer surface of the connecting end disk, supporting the tubular receiving cylinder;

wherein an axial direction, as used herein, is a direction parallel to the filter axis;
wherein a radial direction, as used herein, is a direction traverse to the filter axis;
a filter housing comprising:
a filter cup having a circumferentially close outer wall, a closed bottom and an open axial end;
wherein the filter element is arranged within the filter cup;
a filter cover secured onto the filter cup at the open axial end of the filter cup, enclosing the filter element in the filter cup, the filter cover comprising:
a receiving opening arranged coaxial to the tubular receiving cylinder and having a larger diameter than the tubular receiving cylinder;
a plurality of inlet channel openings extending through the filter cover, spaced radially outwardly away from and surrounding the receiving opening;
a plurality of screw-shaped ramp sections arranged on an inner circumference of the receiving opening and extending radially inwardly towards the tubular receiving cylinder, the plurality of ramps spaced apart in a circumferential direction such that each of the plurality of screw-shaped ramp sections extend about different portions of the inner circumference of the receiving opening;
a plurality of latching spring elements secured onto the filter cover and spaced radially outwardly from the receiving opening, the plurality of latching spring elements comprising:
a circumferentially extending spring arm forming a support section, the circumferentially extending spring arm forming an arc section about the filter axis;
a holding section arranged at a first circumferential end of the latching spring element, the hold section secured onto the filter cover;
a latching nose arranged on a second circumferential end of the latching spring elements;

wherein the plurality of latching spring elements are configured to latch with a latching section of a filter head in an installed and locked state of the exchangeable filter element on the filter head;
wherein the plurality of latching spring elements are configured to automatically and releasably lock by the plug-in/rotary movement with the latching section of the filter head.

2. The exchangeable filter according to claim 1 , wherein
the plurality of latching spring elements is elastic at least in the radial direction.

3. The exchangeable filter according to claim 1 , further comprising
an intermediate ring arranged on the filter cover ( 66 ) and circumferentially surrounding a radially outer side of the plurality of latching spring elements.

4. The exchangeable filter according to claim 3 , wherein
the intermediate ring is elastic or rigid.

5. The exchangeable filter according to claim 1 , wherein
the plurality of latching spring elements is at least partially elastic at least in the radial direction.

6. The exchangeable filter according to claim 1 , wherein
the plurality of latching spring elements is a separate part that is connected directly with the filter cover;
wherein the holding section of the plurality of latching spring elements is received through though a respective inlet channel opening of the filter cover, mounting the plurality of latching spring elements to the filter cover.

7. The exchangeable filter according to claim 1 , wherein
at least two of the plurality of latching spring elements are interconnected with each other and are connected indirectly or directly with the filter cover.

8. The exchangeable filter according to claim 7 , wherein
the plurality of latching spring elements are interconnected to form a single piece.

9. The exchangeable filter according to claim 1 , wherein
the latching nose comprises a hook section.

10. The exchangeable filter according to claim 1 , wherein
the latching nose is elastically movable.

11. The exchangeable filter according to claim 1 , wherein
the circumferentially extending spring arm includes a plurality of grooves or bends formed into the circumferentially extending spring arm.

12. A filter device for fluid comprising:
an exchangeable filter, according to claim 1 ;
a filter head comprising:
a connecting socket having an outer cylinder section;
wherein the connecting socket is configured to detachably connect with a exchangeable filter by a plug-in/rotary movement relative to a connecting axis of the filter device;
a plurality of wedge shaped latching elements formed as radial projections on a radially outer surface of the outer cylinder section, the plurality of wedge shaped latching elements configured to engage and lock with the respective one of the plurality of latching spring elements in the installed and locked state of the exchangeable filter element on the filter head.

Assignees

• Mann & Hummel Gmbh

Inventors

• Jokschas Guenter
• Niemeyer Stephan

Classifications

• B01D27/08 Primary

  Construction of the casing · CPC title

• B01D35/005

  Filters specially adapted for use in internal-combustion engine lubrication or fuel systems · CPC title

• B01D35/306

  Filter mounting adapter · CPC title

• B01D2201/4015

  Bayonet connecting means · CPC title

• B01D2201/291

  End caps · CPC title