DE102011110194A1 - Connecting piece for filter bags - Google Patents

Abstract

The invention describes an attachment piece (1) for a filter element (25), in particular a fully flexible air filter hose. The attachment piece comprises a flange connection piece (2) with a connection piece (3) and a contact section (5) for bearing a fastening section of the filter element (25) to be assigned, and at least one outer element (8) which can be applied to the contact section (5). the fastening section of the filter element (25) to be assigned is clamped between the contact section (5) and the outer element (8). The outer element (8) has at least two outer segments (9) which can be connected to one another by means of at least one closure section (20). A filter arrangement (26) is provided with at least one filter element (24) and an attachment neck (1).

Description

Technical area

The present invention relates to an attachment piece for filter bags, in particular fully flexible air filter hoses.

State of the art

Filter hoses, in particular fully flexible air filter hoses, are used to separate a raw air side from a clean air side through the filter medium of the filter hose. In use, unfiltered air is conveyed through the filter medium to the clean air side, with impurities in the untreated air being deposited on the filter medium on the air filter side on the air filter hose. The filter effect is determined by the material of the air filter tube, in particular its pore size. Filter hoses are known with different cross sections. In addition to round cross-sections, bellows-shaped filter tubes, in particular of rectangular cross-section, are also known.

For attaching the filter bags to housings approach neck are used in the art. The filter bags are usually pushed onto this attachment piece. Spring washers or the like are then pushed onto the filter bag to secure the filter bag to the neck. For a sealing of the filter bag at the neck nozzle widespread seals between the neck nozzle and the filter tube are provided.

The EP 2 086 662 B1 describes a filter device, in particular for the filtration of combustion air in internal combustion engines. A filter element is tubular and held on a support member. The support member is insertable between a raw fluid tube and a clean fluid tube which are assembled into a continuous flow tube. The filter element is located in the flow tube. The support member has a carrier sleeve, in which axial end faces of raw and clean fluid tube used and connected via a latching connection with the carrier sleeve.

It is desirable to improve an adapter for filter bags, especially with fully flexible air filter bags.

Disclosure of the invention

It is therefore an object of the present invention to provide an improved neck nozzle.

This object is achieved by an attachment piece for a filter element, in particular fully flexible air filter hose comprising a Flanschstutzen with a nozzle and a contact portion for abutment of a mounting portion of the attributable filter element, and at least one outer element. The outer element can be applied to the contact section, so that the fastening section of the filter element is clamped between the contact section and the outer element. The outer element has at least two outer segments, which can be connected to one another by means of at least one closure section.

The object is also achieved by a filter arrangement with at least one filter unit. The filter unit has the attachment neck described above. In this case, the filter unit may comprise a tubular filter element and the attachment piece.

The outer element with at least two outer segments provides a simple, fast and effective installation of the filter element.

A further advantage results if the at least two outer segments can be permanently connected by means of the at least one closure section. Thus, a forgery-proof design can be achieved. Non-destructive disassembly is not possible.

In one embodiment, the closure portion may have latching means which lock together so that a nondestructive solution, even with tools, is not possible.

The closure portion may alternatively or additionally comprise adhesive.

If the closure portion is weldable, z. B. by means of locking or connecting means, which consist of a suitable plastic, a non-destructive disassembly is not possible.

Preferably, the outer segments are shaped in particular in the region of the closure section in such a way that they reproduce an outer contour of the contact section. This nestle z. B. in the assembled state, the outer segments with the intermediate mounting portion on the contact portion. In particular, in the area where the outer segments adjoin one another, there is no gap, but a smooth transition, so that the fastening section is enclosed uninterruptedly over its entire circumference by the outer element.

In a further embodiment, the at least two outer segments are pivotally connected to each other via at least one joint. This results in a simple assembly of the filter element on the flange, wherein the outer segments are pivoted about the mounting portion of the applied filter element around. As a result, such a fastening operation of the outer element can be simplified, since no threading or pulling the filter tube through the outer element is necessary.

In yet another embodiment, the hinge is a foil hinge. Thus, the outer element in a simple manner z. B. made of injection molded plastic also be made in multipart design cost.

In an alternative embodiment, the hinge may have nested sections.

A still further embodiment provides that the abutment portion of the Flanschstutzens and / or cooperating with the abutment portion clamping surfaces of the outer member have ribs. As a result, an increased support and tightness of the filter element is made possible on the neck.

In another embodiment, the Flanschstutzen and the at least one outer element may be formed as a one-piece component. This results in a simple production and easy handling. The flange and the at least one outer element can be z. B. be connected via a film hinge. This connection can be designed so that it can be either dissolved or retained during assembly. This results in a captivity of these components.

Further possible implementations of the invention also include not explicitly mentioned combinations of features or embodiments of the filter element or the fluid filter arrangement described above or below with regard to the exemplary embodiments. The skilled person will also add individual aspects as improvements or additions to the respective basic form of the invention.

Further embodiments of the invention are the subject of the dependent claims and the embodiments of the invention described below. Furthermore, the invention will be explained in more detail by means of embodiments with reference to the accompanying figures.

Brief description of the drawings

It shows:

1 a schematic perspective view of an embodiment of a neck in an open state;

2 an enlarged side view of a locking element of an outer element of the embodiment according to 1 ;

3 - 4 Top views of variants of the outer element of the embodiment according to 1 ;

5 - 7 enlarged side views of variants of a closure portion of the outer member;

8th a schematic side view of a variant of a clamping portion;

9 a schematic perspective view of a filter unit;

10 a schematic representation of a filter assembly; and

11 an enlarged schematic partial sectional view of the area XI 10 ,

In the figures, the same reference numerals designate the same or functionally identical components, unless indicated otherwise.

Embodiment (s) of the invention

In 1 is a schematic perspective view of an embodiment of a neck 1 shown in an open state.

It is at the same time referring to 9 which is a schematic perspective view of a filter unit 24 shows. In 9 is the neck nozzle 1 shown in a closed or mounted state.

The neck nozzle 1 includes a flange connection 2 and an exterior element 8th , The flange connection 2 has a circular cylindrical neck 3 with a conditioning section 5 and an inner surface 7 on. At one end, in 1 if this is the back facing side, the neck is 3 with a circumferential flange 4 Mistake. The flange 4 has in this embodiment, a small radial extent, which, however, can be made larger depending on the application. The radial extent here has a width which corresponds approximately to three times the material thickness.

The circulating system section 5 of the neck 3 serves to create a filter element 25 the filter unit 24 (please refer 9 to 11 ). In this embodiment, the abutment section 5 with two circumferential ribs 6 whose function will be described in more detail below.

The outer element 8th here comprises two annular outer segments 9 which each have a semicircular cross-section. The two outer segments 9 lie with their each as a joint approach 12 Thickened ends close together and are over a gap 11 objected. The joint approaches 12 are carriers of a joint 10 over which the outer segments 9 are pivotally connected to each other. The joint 10 is formed in this embodiment as a foil hinge or film hinge. A pivot axis of the joint 10 is indicated by a dashed line.

The outer segments 9 can z. B. be designed to be flexible in some way to a dense contact surface of the clamping surfaces 19 at the attachment portion of the filter element 25 to reinforce by an additional spring effect.

The outer segments 9 are as half-ring segments, each with a clamping surface 19 formed on their inner sides. At the free end is the left outer segment 9 with a thickening as a connection approach 13 educated. The connection approach 13 has an end face 18 on, which is essentially at the same level of the joint 10 lies. On this face 18 is a vertically projecting locking element 15 arranged, which at its free upper edge with a latching section 16 is formed (see also 2 ).

The free end of the right outer segment 9 is also provided with a thickening acting as a receiving approach 13 is trained. In the recording approach 14 is a detent opening 17 molded, which with the locking element 15 corresponds.

The outer segments 9 of the outer element 8th be at a mounting of the filter element 25 , which with a mounting portion on the contact section 5 is applied to the pivot axis of the joint 10 pivoted about 180 ° so that the outer segments 9 the neck 3 enclose with the applied filter element. Here are the connection approach 13 and the recording approach 14 across from. The locking element 15 is then in the latching opening 17 introduced and latched in this. In this way, the attachment portion of the filter element 25 between the plant section 5 and the clamping portions 19 the outer segments 9 of the outer element 8th firmly clamped without gap. This is in 9 represented and easily recognizable.

The locking element 15 with the resting section 16 and the detent opening 17 form in the closed state of the neck 1 a closure section 20 which is preferably insoluble. In other words, it is not possible to use the closure section 20 non-destructive, even with a tool.

In a variant, not shown, the Flanschstutzen 2 and the outer element 8th as a one-piece component, for. B. plastic injection molded part, be made, wherein the outer element 8th at a suitable location of the flange neck 2 is attached captive with a skin or a foil joint. Such a connection may, for. B. between joints 10 and the flange 4 be arranged as it is based on the arrangement in 1 is easy to imagine.

2 shows an enlarged side view of the locking element 15 of the outer element 8th the embodiment according to 1 , It can be clearly seen that the free end of the locking element 15 for easy insertion into the locking opening 17 is rounded. The resting section 16 is here z. B. formed as a latching lug. Of course, other forms, such. B. barbs possible.

In 3 is a plan view of a variant of the outer element 8th the embodiment according to 1 shown.

The outer element 8th can consist of more than two outer segments 9 consist. Here is an example of an outer element with three outer segments 9 shown. The outer segments 9 are each with each other with the joints 10 with the gap 11 connected. The closure section 20 is configured as already described above.

It is in another variant, the 4 in a plan view, it is also possible that two (or more) same outer segments 9 are used, each of which at one end a connection approach 13 and the recording approach at the other end 14 having. Thus, in this variant, two opposite closure sections arise 20 , A joint 10 is not available here.

In the 5 to 7 are different variants of a closure section 20 of the outer element 8th shown enlarged.

5 shows a closure section 20 with a pin element 32 that in the connection approach 13 is introduced. The pin element 32 can z. B. of metal and of a plastic material of the outer segment 9 to be splashed. The recording approach 14 has for this purpose a corresponding opening. The free end of the pin element 32 has in this variant a pin head 33 which z. B. also with a locking geometry, for example a kind of screw or nail head, is configured. The pen head 33 is here through the intake approach 14 passed through and with this by means of a suitable adhesive 34 additionally connected.

The closure section 20 which is in 6 is shown also has a pin element 32 on, whose pin head 33 through the intake approach 14 passed through and then deformed. It may be z. B. to act a metallic rivet by suitable openings in the connection approach 13 and recording approach 14 is inserted and machined with a suitable riveting tool.

The pin element 32 can z. B. also consist of a plastic, either integral with the outer segment 9 manufactured or used as an accessory such as the rivet described above. The pen head 33 made of plastic can then be formed by means of a suitable welding tool and / or with the receiving approach 14 be welded.

Finally shows 7 a variant in which the connection approach 13 and the recording approach 14 with a geometry, e.g. B. dovetail o. The like., Are formed. By means of a closure element 21 , which has a corresponding geometry, the closure portion 20 by pushing or clipping the closure element 21 be locked. By an additional adhesive or Kunststoffverschweißung the closure portion 20 indissolubly formed.

In 8th is a schematic side view of a variant of a clamping portion between the outer member 8th and the flange neck 6 shown.

The stub 3 has the ribs 6 which are spaced by gaps, which for receiving projections 23 , z. B. also ribs, the outer segment 9 are provided. These projections 23 are on the clamping surface 19 of the outer segment 9 appropriate. In this way, a kind of teeth can be formed. The attachment portion of the filter element 25 so is between the outer segment 9 and the neck 3 fixed by this Gegenverrippung with increased holding power and sealing.

A filter unit 24 with the filter element 25 is in 9 shown. The filter element 25 is at the neck 1 set in the manner already described. This covers the flange 4 of the flange neck 2 the area between the neck 3 and the clamping surface 19 of the outer element. The outer element 8th has two outer segments 9 to 1 on. The filter element 25 is formed with a substantially polygonal cross-section in the manner of a bellows. The attachment portion is not shown in detail, but easy to imagine.

10 shows a schematic representation of a filter assembly 26 ,

The filter unit 24 with the filter element 25 and the neck 1 is in a housing 27 arranged, which is only schematically outlined. The neck nozzle 1 is in a manner not shown in detail on a Rohlufteinlass 29 of the housing 27 appropriate. raw air 28 flows through the neck 1 in the filter element 25 and is filtered by this in a corresponding manner, whereby clean air 30 formed by clean air outlets 31 of the housing 27 can enter an associated clean air area.

The area XI off 10 is in 11 shown in an enlarged schematic partial sectional view.

Here is the smooth clamping surface 19 an outer segment 9 of the outer element 8th to 1 shown. Between the clamping surface 19 and the investment section 5 of the neck 3 of the flange neck 2 is the attachment portion of the filter element 25 densely arranged and through the ribs 6 of the neck 3 held in addition to a clamping force. The clamping force is through the outer element 8th applied. It is clearly visible here that the flange 4 of the flange neck 2 the clamping area between the clamping surface 19 of the outer element 8th and the investment section 5 of the neck 3 covering and can create an additional sealing effect.

The neck nozzle 1 , ie flange connection 2 and outer element 8th , can be made of plastics, such as. B. PA, PE, PP, TPE u. Ä. Be manufactured. Of course, these plastics can also be used with suitable fillers or without. Of course, combinations of plastics and metal, eg. As metallic deposits, latching means o. The like., Possible.

Although the present invention has been described in terms of preferred embodiments herein, it is not limited thereto, but modifiable in a variety of ways. For example, the neck can 3 at the to the filter element 25 be chamfered end to a sliding of the attachment portion of the filter element 25 to facilitate and possibly damage.

It is conceivable that the joints 10 can consist of nestable hinge parts.

The locking element 15 can z. B. as a cable tie end with a locking portion, z. B. ratchet teeth, and be formed extended. In this case, the receiving section 14 a corresponding receiving opening with corresponding ratchet teeth. By means of the extended end of the closure portion 20 tensioned and closed by pulling.

It is also possible that the connecting section 13 and the receiving section 14 Have openings for inserting one or more cable ties, with which the closure portion 20 can be permanently closed.

Furthermore, adhesive bonds on the face 18 possible.

It is also conceivable that locking screws with adhesive in bubbles for screwing the closure section 20 can be used. In this case, the adhesive to the material of the neck 1 be suitably adapted.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2086662 B1 [0004]

Claims (11)

Neck nozzle ( 1 ) for a filter element ( 25 ), in particular fully flexible air filter hose, comprising a flange ( 2 ) with a nozzle ( 3 ) and a plant section ( 5 ) for abutment of a fastening section of the filter element ( 25 ), and at least one outer element ( 8th ), which on the investment section ( 5 ) is applied so that the attachment portion of the attributable filter element ( 25 ) between the plant section ( 5 ) and the outer element ( 8th ) is clamped, wherein the outer element ( 8th ) at least two outer segments ( 9 ), which by means of at least one closure portion ( 20 ) are connectable. Neck nozzle ( 1 ) according to claim 1, wherein the at least two outer segments ( 9 ) by means of the at least one closure section ( 20 ) are permanently connected. Neck nozzle ( 1 ) according to claim 2, wherein the closure portion ( 20 ) Has locking means or adhesive. Neck nozzle ( 1 ) according to one of claims 1 to 3, wherein the outer segments ( 9 ) in particular in the region of the closure section ( 20 ) are shaped such that they form an outer contour of the contact section ( 5 ). Neck nozzle ( 1 ) according to claim 1 or 2, wherein the closure portion ( 20 ) is weldable. Neck nozzle ( 1 ) according to one of claims 1 to 5, wherein the at least two outer segments ( 9 ) with each other via at least one joint ( 10 ) are pivotally connected. Neck nozzle ( 1 ) according to claim 6, wherein the joint ( 10 ) is a film hinge. Neck nozzle ( 1 ) according to claim 6, wherein the joint ( 10 ) has nestable sections. Neck nozzle ( 1 ) according to one of claims 1 to 8, wherein the abutment section ( 5 ) of the flange ( 2 ) and / or with the attachment section ( 5 ) cooperating clamping surfaces ( 19 ) of the outer element ( 8th ) Ribs ( 6 ) exhibit. Neck nozzle ( 1 ) according to one of claims 1 to 9, wherein the flange neck ( 2 ) and the at least one outer element ( 8th ) are formed as a materialeinstückiges component. Filter arrangement ( 26 ) with at least one filter element ( 25 ) and an adapter ( 1 ) according to one of claims 1 to 10.

Images