FR2724980A1 - AIR FILTER DEVICE - Google Patents

Abstract

According to the invention, this involves stiffening an air filter body (4) without reducing the mounting space for the filter element or the engine space by a set of ribs provided on the filter body. For this purpose at least one end disc (6) of the filter element (5) is made in a rigid form, as a carrier element, in the filter body (4) and is clamped, dynamically connected and in form connection between the constituent parts of the filter body so that the rigidity of the filter body is increased.

Description

1i 2724980 Air filter device The present invention relates to a

  air filter device which, intended for an internal combustion engine, comprises a filter body in one or more plastic parts and a

  tight filter element at one of its ter-

  between the parts of the body. Air filter bodies

  used so far in practice generally present

  Lement a set of ribs which provides the necessary degree of volume rigidity and damping of oscillations. This is in particular to prevent the wall of the body of the

  air filter does not oscillate under the influence of asbestos pulsations

  piracy. This set of ribs, however, requires a determined mounting volume so that either, in the case of internal ribs, the mounting space of the filter element, or

  in the case of external ribs, the engine space is

ve reduced.

  Consequently, the invention addresses the problem which consists in stiffening an air filter body without at the same time reducing the mounting space for the filter element or

engine space.

  This problem is solved, for an air filter device which, intended for an internal combustion engine, comprises a filter body in two or more plastic parts and a tight filter element, at one of its discs

  terminals, between the parts of the filter body, according to the

  vention by the fact that at least the terminal disc tightened in

  place is rigid and that it is connected, in dynamic connection

  mique and in shape connection, to the filter body.

  The fact that the terminal disc of the filter element, clamped between the parts of the filter body, is made in

2 2724980

  as a bearing element in the filter body allows, for unchanged rigidity, to a large extent to remove the ribs from the filter body and requires no space for

additional mounting.

  Advantageously, the terminal disc of the wire element

  trant is made of thermoplastic material. In comparison to a

  elastomeric terminal disc this construction is natural

  re to significantly increase the rigidity of the filter body.

  According to another characteristic of the device according to the invention, the terminal disc tightened in place has a collar extending at least partially around the periphery

  and which, as a centering frame, is arranged in connection

  its dynamic and form-fitting, in a groove in the filter body. The flange thus produced and arranged is particularly suitable for ensuring the transmission of force from the

  filter body to the terminal disc of the filter element.

  By means of a sufficiently tight adjustment of the other terminal disc, in the filter body, with occasional pressing of the terminal disc on several bearing faces distributed over

  the periphery of the wall of the filter body, this disc

  minal can also fulfill the functions of a supporting and reinforcing element. In this regard, the adjustment must be chosen, on the one hand, sufficiently loose so that the filter element can still be mounted and, on the other hand, sufficiently tight so that the terminal disc is permanently supported against

  the filter body and that any clicking is avoided.

  The invention is explained in more detail below with the aid of an exemplary embodiment illustrated in the single drawing annexed o Figure 1 shows, in cross section, a body

  air filter with a filter element.

3 2724980

  An air filter 1 is constituted by a cover 2 with an outlet pipe 3 and a filter body 4 intended to receive a filter element 5. The filter element 5 comprises a terminal disc 6 by means of which it is clamped between the cover 2 and the body 4. The terminal disc 6 is formed of a rigid material and has a collar 7 extending at least partially around the periphery and which engages, in shape connection and in dynamic connection, in a groove 8

  forming part of the filter body. A separate seal

  protects the clean side of the filter from the surrounding environment The intro-

  duction of the collar 7 in the groove 8 is facilitated, on the inside of the groove, by a chamfer and, on the side

  outside, by individual chamfered ribs 10.

4 2724980

Claims (3)

  1. Air filter device which, intended for an engine   thermal, includes a filter body (4) in two or more   their parts made of plastic and a filter element (5) clamped, at one of its end discs, between the constituent parts of the body, characterized in that at least the end disc (6) clamped in place is rigid and in that it is connected, in dynamic connection and in   shape connection to the filter body.   2. An air filter device according to claim 1,   characterized in that the terminal disc of the wire element   trant is made of thermoplastic material.   3. An air filter device according to claim 1 or   2, characterized in that the terminal disc (6) clamped in place   this has a flange (7) extending at least partially-   lying around the perimeter and which, as a centering framework, engages, in dynamic link and in form link, in a groove in the filter body.