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Air filter

A technology of air filter and filter element, which is applied in the direction of fuel air filter, membrane filter, dispersed particle filter, etc., and can solve the problem of difficult replacement of filter element

Active Publication Date: 2007-01-10
ANDREAS STIHL AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes filter element replacement more difficult

Method used

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Examples

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Embodiment Construction

[0021] figure 1 A side view of a hand-held power tool, ie a power saw 1 is shown. The power saw 1 has a housing 2 with a rear handle 3 and a handle tube 4 for guiding the power saw 1 . Be provided with a guide rail 5 on the shell 2 that is positioned at the opposite side of rear handle 3, a guide rail 5 is arranged on figure 1 The saw chain, not shown, circulates around this guide rail. For driving the saw chain, the power saw 1 has an internal combustion engine housed in the housing 2 . Internal combustion engines draw combustion air from the surrounding environment through an air filter.

[0022] figure 2 A perspective view of the filter element 11 of the air filter of the power saw 1 is shown. The filter element 11 has a frame 16 with a surrounding edge on which the seal 20 is arranged. The frame 16 has a grid 18 on which the flat filter material 17 of the filter element 11 is held. Four protruding pegs 19 are provided on the grid 18 and serve as protection for the ...

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Abstract

An air filter for an internal combustion engine of a hand-held tool such as a power saw, an abrasive cutting wheel, a trimmer etc., has a case element (12) for limiting the sweet gas chamber of the air filter. The air filter has a filter element (11), wherein the combustion air used for the internal combustion engine is sucked through the filter element (11) to the sweet gas chamber. The filter element (11) is detachablely fixed to the case element (12). In order to make the assemble and disassemble procedure of the filter element simple, and to make the filter element (11) has at least one connection board (26), the filter element can be inserted into a seat (17) of the case element (12), wherein the filter element (11) is positioned at least at one direction with respect to the case element (12) by the connection board (26) in the seat (17), and wherein the connection board (26) is held in the seat (17), so that the filter element (11) can swing corresponding to the case element (12).

Description

technical field [0001] The invention relates to an air filter for an internal combustion engine of a walk-behind work tool, such as a power saw, cutting wheel, clearing and cutting device, etc., which has a housing part delimiting the clean air chamber of the air filter, and also has a filter element , wherein the combustion air for the internal combustion engine is sucked into the clean air chamber via the filter element, and wherein the filter element is fastened detachably to the housing part. Background technique [0002] An air filter for the intake duct of an internal combustion engine is known from US 3,203,158, which can be fastened to the intake pipe with snap hooks. There are four snap-action hooks which must be removable for filter replacement. Easy access to the filter element is necessary for this. All snap action hooks must be actuated simultaneously to remove the filter element. All snap action hooks must be positioned on the suction pipe when fastening the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/02
CPCB01D46/10F02B63/02F02M35/024F02M35/0203B01D46/0004B01D2265/028
Inventor J·科恩H·滋梅曼恩
Owner ANDREAS STIHL AG & CO KG
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