# US 11,439,939 B2 · Connection arrangement for fixing a lid of an air filter device of a motor vehicle to a filter housing and to a filter element and an associated filter element

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,439,939 B2
- Document ID: US11439939B2
- Status: Granted
- Kind: B2
- Application number: 16/637,636
- Filed: 2018-08-06
- Published: 2020-08-27
- Granted: 2022-09-13
- Earliest claimed: 2017-08-08
- Assignees: Daimler AG
- Applicants: Daimler Brand & IP Management GmbH & Co. KG
- Inventors: Eric Schumacher
- Web page: https://patentgrep.com/patent/US11439939B2

## CPC

- B01D 46/0006: {Filter elements or cartridges installed in a drawer-like manner}
- B01D 46/0004: {Details of removable closures, lids, caps or filter heads}
- B01D 46/4227: {Manipulating filters or filter elements, e.g. handles or extracting tools}
- B01D 46/521: {using folded, pleated material}
- B60H 3/0616: {with provisions for replacing the filter element}
- B01D 2279/40: for cleaning of environmental air, e.g. by filters installed on vehicles or on streets
- B60H 2003/065: {Details for holding filter elements in position}
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES

## Abstract

A connection arrangement for fixing a lid to a filter housing and to a filter element, by which an insertion opening in the filter housing can be closed, includes a holding element on the filter element and a locking element on the lid. The holding element can be fixed by a contact surface for contacting the locking element in a recess of the filter housing. The holding element has a latching geometry with which it can be latched in the recess of the filter housing. The locking element is a shaft with a bolt rod and a handle part. The shaft is guided through the lid such that the lid and the filter element in the latching position can, by the bolt rod and a contact surface formed as a ramp on the holding element, which engage with one another by turning the locking element, be spanned against each other.

## Claims

### Claim 1

A connection arrangement that fixes a lid (42) to a filter housing (12) of an air filter device of a motor vehicle and to a filter element (10) via which an insertion opening (44) in the filter housing (12) for the filter element (10) is closeable with the lid (42), comprising:
a holding element (32) on the filter element (10); and
a locking element (48) on the lid (42);
wherein the holding element (32) is fixable by a contact surface for contacting the locking element (48) protruding from the lid (42) in a recess of the filter housing (12);
wherein the holding element (32) has a latching geometry (56) with which the holding element (32) is latchable in the recess of the filter housing (12) formed as a latching niche (64), whereby the filter element (10) is fixable in a latching position to the filter housing (12);
wherein the locking element (48) is formed as a shaft (38) having a bolt rod (40) projecting from a first end of the shaft (38) and having a handle part (50) on a second end of the shaft (38) for rotating the locking element (48), wherein the bolt rod (40) projects from the first end of the shaft (38) along a direction perpendicular to a long axis of the shaft (38);
wherein the shaft (38) is guided through the lid (42) such that the lid (42) and the filter element (10) in a latching position are, by the bolt rod (40) and the contact surface formed as a ramp (52) on the holding element (32), which engage with one another by turning the locking element (48), spannable against each other.

### Claim 2 (depends on 1)

A filter element (10) comprising the holding element (32) of the connection arrangement according to claim 1, wherein the holding element (32) is held on a frame (16) which at least regionally surrounds a filter material (14) of the filter element (10).

### Claim 3 (depends on 2)

The filter element (10) according to claim 2, wherein the ramp (52) on the holding element (32) is formed as a three-dimensional hump.

### Claim 4 (depends on 2)

The filter element (10) according to claim 2, wherein the holding element (32) has a passage opening (36) for guiding the locking element (48) through, wherein the ramp (52) is formed on a back side of the passage opening (36).

### Claim 5 (depends on 2)

The filter element (10) according to claim 2, wherein the holding element (32), abutting on the ramp (52), has an abutment (46) for securing an end position of the bolt rod (40).

### Claim 6 (depends on 2)

The filter element (10) according to claim 2, wherein the holding element (32) is held by a flexible connecting bar (30) to the frame (16).

### Claim 7 (depends on 2)

The filter element (10) according to claim 2, the filter element (10) has an elastic front wall (18) is deformable from an expanded shape into a compressed shape.

### Claim 8 (depends on 2)

The filter element (10) according to claim 2, wherein the filter element (10) has an actuating element (70), with which the latching geometry (56) of the holding element (32) is movable out of the latching position of the filter element (10) into a demounting position.