EP1158176A1 - Snap-in connection for a spiral housing - Google Patents

Snap-in connection for a spiral housing Download PDF

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Publication number
EP1158176A1
EP1158176A1 EP01108818A EP01108818A EP1158176A1 EP 1158176 A1 EP1158176 A1 EP 1158176A1 EP 01108818 A EP01108818 A EP 01108818A EP 01108818 A EP01108818 A EP 01108818A EP 1158176 A1 EP1158176 A1 EP 1158176A1
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EP
European Patent Office
Prior art keywords
guide
component according
height
web
guide groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01108818A
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German (de)
French (fr)
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EP1158176B1 (en
Inventor
Gunter Dipl.-Ing. Streng (Fh)
Bernhard Bamberger
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Ebm Werke GmbH and Co KG
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Ebm Werke GmbH and Co KG
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Publication of EP1158176A1 publication Critical patent/EP1158176A1/en
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Publication of EP1158176B1 publication Critical patent/EP1158176B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings

Definitions

  • the invention relates to a component made of at least one plastic element and at least one metallic stamping element with at least one boundary edge, which is guided in a guide of the plastic element.
  • Components of this type are, for example, components of housings, in particular of Spiral casing for radial blowers. These consist of two side parts Plastic and a metal casing, which is in the guide grooves of the side parts is held. To produce the casing, it is made of a metallic Sheet metal punched out. The punching process creates an edge on one side a rounded shape and on the other side in the punching direction has protruding punch burr.
  • This punching ridge is when assembling the Housing shell with the plastic side parts - especially when inserting into the narrow Guide groove - a hindrance, since the protruding, usually sharp-edged ridge can easily be removed hooked the nutrand.
  • the invention has for its object to provide a generic component that is simple and inexpensive to manufacture and assemble, which Plastic element and the metallic stamping element with each other without play in the Leadership should be connectable.
  • the punching element has several spaced from each other, in the direction of one which arises during the punching process Stamped burr has elevations, the distance to the boundary edge is less than the depth of the guide and its height is at least the height of the Stamped burr corresponds, the width of the guide approximately the material thickness of the Punching element plus the amount of increases.
  • the invention is based on the knowledge that the deburring of the metallic Component can then be omitted if the width of the guide of Plastic element, for example designed as a guide groove, the material thickness of the punching element plus the resulting burr.
  • the wide guide groove ensures a play-free fit Punching element according to the invention increases in the direction of the punch burr in the area the boundary edge on the inside of the assembled components the guide groove are arranged and their height is the height of the punch burr exceeds.
  • the width of the guide groove corresponds approximately to the material thickness of the Punching element plus the height of the increases.
  • the invention Increases thus enable broadening of the leadership or the Guide groove so that the deburring punching element can be inserted is unproblematic, and on the other hand a play-free connection of the Plastic element with the metallic stamping element.
  • the guide according to the invention has the an outer and an inner web is formed from the outer web molded snap hooks which engage in openings of the punching element. This "clip system" enables simple and quick installation.
  • the guide groove advantageously has at several points from the Groove base formed in the direction of the stamping element, the one Ensure axial tolerance compensation. Vibrations of the punching element or Housing shell, for example excited by a drive motor, are thereby locked out.
  • the guide groove advantageously has Joining aid on a guide web connecting the outer and the inner web, on which a notch of the stamping element is placed or in assembled state is inserted into this notch.
  • each Punching element is in front of the openings cooperating with the snap hooks of the metallic stamping element advantageously a portion of each Punching element by deformation in the direction of the elevations from the Boundary edge led out and forms a rising inclined surface. about this inclined surface will also point in the direction of the elevations Snap hooks when joining the plastic element with the metallic one Punching element raised and guided into the opening behind it.
  • the component according to the invention is that deburring is dispensed with can manufacture inexpensively. Through the guide aids and the functional clip system makes installation quick and easy. At a Use of the components as side parts and housing jacket to produce a Blower housing allows the embodiment of the invention a vibration-free Operation, because the punching element used as the casing is by spring clip vibration-damped in the axial direction and by the elevations in the radial direction.
  • FIG. 1 shows a component according to the invention, a spiral housing 1 of a radial fan in a semi-assembled state, consisting of a metal stamping element 2, designed as a sheet metal jacket, and two serving as side panels Plastic elements 4, in which there are air inlet openings 6.
  • a metal stamping element 2 designed as a sheet metal jacket
  • plastic elements 4 in which there are air inlet openings 6.
  • Not one Electric motor fan unit shown is in a motor mount 8 at the connection point three struts 10 each, which are approximately centric in the air inlet openings 6 are interconnected, can be used.
  • the sheet metal jacket is by inserting it mutually opposite boundary edges 12, in particular its Longitudinal edges, can be connected to these in guides 14 of the side parts (cf. also the Figures 2 and 3).
  • Such a guide 14 is preferably as one on the outer edge of the side parts circumferentially arranged guide groove, which by an outer web 18th and an inner web 20 is included.
  • the height of the outer web 18 exceeds the height of the inner web 20, whereby on the one hand the housing is stabilized overall and on the other hand the insertion of the Sheet metal jacket in the respective side part is facilitated.
  • Figures 2 and 3 show a section of an insertable in the guide groove or boundary edge 12 of the sheet metal jacket connected to the guide groove.
  • a burr which is the joining of the Sheet metal jacket with the side parts so hampered that a previous deburring of the Sheet metal jacket is necessary.
  • the sheet metal jacket of the spiral housing 1 according to the invention along its two boundary edges 12 several, for example dome-shaped, Elevations 16 spaced apart from one another in the direction of the punch burr are pronounced and the height of which exceeds the height of the punch burr. in the The raised portions are the assembled state of the sheet metal jacket with the side part 16 arranged within the guide groove.
  • the width of the invention corresponds approximately to the material thickness of the sheet metal jacket plus the height of the elevations 16, whereby on the one hand the introduction of the non-deburred Sheet metal jacket significantly facilitated and on the other hand a play-free connection of the Sheet metal jacket with the side part is made possible.
  • the sheet metal jacket is easy without to get caught, can be used in the guide groove, because of the elevations 16 Avoid contact of the boundary edge 12 with the inside of the inner web 20 becomes.
  • the sheet metal jacket according to the invention has opposite the snap hooks 22 in the direction of the elevations 16 rising inclined surface 30.
  • This inclined surface 30 meets as an insertion or Assembly aid when joining the two components first onto the nose of the Snap hook 22 and lifts it slightly in the opposite of the elevations 16 Direction.
  • the elevations 16 enter the guide groove, which brings the outside of the sheet metal jacket to the inside surface of the outer web 18 is pressed.
  • the snap hook 22 is moved along the inclined surface 30 and further raised to finally snap into the locking window 24 of the sheet metal jacket.
  • the guide groove Scope distributed guide webs 32 arranged. These guide webs 32 run on the groove base and connect the outer web 18 to the inner web 20.
  • the Sheet metal jacket has notches 34 lying opposite the guide webs 32, in which the guide webs 32 in the assembled state of the sheet metal jacket Extend side panels 4.
  • the guide webs 32 and the notches 34 are essentially wedge-shaped, the width of the guide webs 32 starting from the groove base 26 in the direction of Sheet metal sheath decreases.
  • the invention is not based on the illustrated and described embodiment limited, but also covers all those acting in the same sense in the sense of the invention Executions. Furthermore, the invention has not yet been based on that in claim 1 defined combination of features limited, but can also by any other any other combination of certain features of all disclosed Individual characteristics must be defined. This means that basically every single feature of claim 1 omitted or by at least one other Instead of the individual feature disclosed the application can be replaced. To that extent Claim 1 is only to be understood as a first attempt at formulation for an invention.

Abstract

The grill mounting for a radial blower has a plastics end plate (4) and a stamped metal casing (2) with an edge wall (12) fitting into a guide in the plastics end plate. The stamped metal casing has a raised projections (16) with spacing from the edge wall less than the depth of the guide and with a height at least equal to the stamped ridge. The width of the guide matches the material thickness of the casing plus the height of the projection.

Description

Die Erfindung betrifft ein Bauteil aus mindestens einem Kunststoffelement und mindestens einem metallischen Stanzelement mit mindestens einer Begrenzungskante, die in einer Führung des Kunststoffelementes geführt ist.The invention relates to a component made of at least one plastic element and at least one metallic stamping element with at least one boundary edge, which is guided in a guide of the plastic element.

Derartige Bauteile sind beispielsweise Bestandteile von Gehäusen, insbesondere von Spiralgehäusen für Radialgebläse. Diese bestehen aus zwei Seitenteilen aus Kunststoff und einem Gehäusemantel aus Metall, der in Führungsnuten der Seitenteile gehalten ist. Zur Herstellung des Gehäusemantels wird dieser aus einer metallischen Blechbahn ausgestanzt. Bei dem Stanzvorgang entsteht eine Kante, die an einer Seite eine abgerundete Form und an ihrer anderen Seite einen in Stanzrichtung überstehenden Stanzgrat aufweist. Dieser Stanzgrat ist beim Zusammenfügen des Gehäusemantels mit den Kunststoffseitenteilen - speziell beim Einführen in die enge Führungsnut - hinderlich, da sich der überstehende, meist scharfkantige Grat leicht mit dem Nutrand verhakt. Außerdem ist die Herstellung einer möglichst spielfreien Verbindung wegen des ungleichmäßig überstehenden Grates kaum möglich. Aus den genannten Gründen wird der gestanzte Gehäusemantel vor dem Zusammenfügen mit den Kunststoffseitenteilen an seinen Kanten entgratet. Dies ist jedoch aufwendig und verursacht erhöhte Herstellungskosten.Components of this type are, for example, components of housings, in particular of Spiral casing for radial blowers. These consist of two side parts Plastic and a metal casing, which is in the guide grooves of the side parts is held. To produce the casing, it is made of a metallic Sheet metal punched out. The punching process creates an edge on one side a rounded shape and on the other side in the punching direction has protruding punch burr. This punching ridge is when assembling the Housing shell with the plastic side parts - especially when inserting into the narrow Guide groove - a hindrance, since the protruding, usually sharp-edged ridge can easily be removed hooked the nutrand. In addition, the production is as free of play as possible Connection hardly possible due to the unevenly protruding ridge. From the reasons mentioned, the punched housing jacket is used before assembly deburred the plastic side parts on its edges. However, this is expensive and causes increased manufacturing costs.

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Bauteil zu schaffen, das einfach und kostengünstig herstellbar und zu montieren ist, wobei das Kunststoffelement und das metallische Stanzelement spielfrei miteinander in der Führung verbindbar sein sollen.The invention has for its object to provide a generic component that is simple and inexpensive to manufacture and assemble, which Plastic element and the metallic stamping element with each other without play in the Leadership should be connectable.

Erfindungsgemäß wird dies dadurch erreicht, dass das Stanzelement mehrere zueinander beabstandete, in Richtung eines beim Stanzvorgang entstehenden Stanzgrates weisende Erhöhungen aufweist, deren Abstand zur Begrenzungskante geringer als die Tiefe der Führung ist und deren Höhe mindestens der Höhe des Stanzgrates entspricht, wobei die Breite der Führung etwa der Materialstärke des Stanzelementes zuzüglich der Höhe der Erhöhungen entspricht.According to the invention, this is achieved in that the punching element has several spaced from each other, in the direction of one which arises during the punching process Stamped burr has elevations, the distance to the boundary edge is less than the depth of the guide and its height is at least the height of the Stamped burr corresponds, the width of the guide approximately the material thickness of the Punching element plus the amount of increases.

Der Erfindung liegt die Erkenntnis zugrunde, dass auf das Entgraten des metallischen Bauteils dann verzichtet werden kann, wenn die Breite der Führung des Kunststoffelementes, beispielsweise ausgeführt als Führungsnut, die Materialstärke des Stanzelementes zuzüglich des entstandenen Grates übersteigt. Um auch bei breiter Führungsnut einen spielfreien Sitz zu gewährleisten, weist das erfindungsgemäße Stanzelement Erhöhungen in Richtung des Stanzgrates im Bereich der Begrenzungskante auf, die im zusammengefügten Zustand der Bauteile innerhalb der Führungsnut angeordnet sind und deren Höhe die Höhe des Stanzgrates übersteigt. Die Breite der Führungsnut entspricht etwa der Materialstärke des Stanzelementes zuzüglich der Höhe der Erhöhungen. Die erfindungsgemäßen Erhöhungen ermöglichen somit einerseits eine Verbreiterung der Führung bzw. der Führungsnut, so dass das Einführen des nicht entgrateten Stanzelementes unproblematisch ist, und andererseits eine spielfreie Verbindung des Kunststoffelements mit dem metallischem Stanzelement.The invention is based on the knowledge that the deburring of the metallic Component can then be omitted if the width of the guide of Plastic element, for example designed as a guide groove, the material thickness of the punching element plus the resulting burr. To also at This ensures that the wide guide groove ensures a play-free fit Punching element according to the invention increases in the direction of the punch burr in the area the boundary edge on the inside of the assembled components the guide groove are arranged and their height is the height of the punch burr exceeds. The width of the guide groove corresponds approximately to the material thickness of the Punching element plus the height of the increases. The invention Increases thus enable broadening of the leadership or the Guide groove so that the deburring punching element can be inserted is unproblematic, and on the other hand a play-free connection of the Plastic element with the metallic stamping element.

In einer ersten Ausführungsvariante weist die erfindungsgemäße Führung, die aus einem äußeren und aus einem inneren Steg gebildet wird, aus dem äußeren Steg ausgeformte Schnapphaken auf, die in Öffnungen des Stanzelementes eingreifen. Dieses "Clip-System" ermöglicht eine einfache und schnelle Montage.In a first embodiment variant, the guide according to the invention has the an outer and an inner web is formed from the outer web molded snap hooks which engage in openings of the punching element. This "clip system" enables simple and quick installation.

Außerdem weist die Führungsnut vorteilhafterweise an mehreren Stellen aus dem Nutgrund in Richtung des Stanzelementes ausgeformte Federbügel auf, die einen axialen Toleranzausgleich gewährleisten. Vibrationen des Stanzelementes bzw. des Gehäusemantels, beispielsweise angeregt durch einen Antriebsmotor, sind dadurch ausgeschlossen.In addition, the guide groove advantageously has at several points from the Groove base formed in the direction of the stamping element, the one Ensure axial tolerance compensation. Vibrations of the punching element or Housing shell, for example excited by a drive motor, are thereby locked out.

Zur weiteren Montageerleichterung weist die Führungsnut vorteilhafterweise als Fügehilfe einen den äußeren und den inneren Steg verbindenden Führungssteg auf, auf dem eine Auskerbung des Stanzelementes aufgesetzt wird bzw. der im zusammengebautem Zustand in diese Auskerbung eingefügt ist. To further facilitate assembly, the guide groove advantageously has Joining aid on a guide web connecting the outer and the inner web, on which a notch of the stamping element is placed or in assembled state is inserted into this notch.

Erfindungsgemäß ist vor den mit den Schnapphaken zusammenwirkenden Öffnungen des metallischen Stanzelementes vorteilhafterweise jeweils ein Teilabschnitt des Stanzelementes durch Verformung in Richtung der Erhöhungen aus der Begrenzungskante herausgeführt und bildet eine ansteigende Schrägfläche. Über diese Schrägfläche werden die ebenfalls in Richtung der Erhöhungen weisenden Schnapphaken beim Zusammenfügen des Kunststoffelements mit dem metallischen Stanzelement angehoben und in die dahinterliegende Öffnung geführt.According to the invention is in front of the openings cooperating with the snap hooks of the metallic stamping element advantageously a portion of each Punching element by deformation in the direction of the elevations from the Boundary edge led out and forms a rising inclined surface. about this inclined surface will also point in the direction of the elevations Snap hooks when joining the plastic element with the metallic one Punching element raised and guided into the opening behind it.

Das erfindungsgemäße Bauteil ist dadurch, dass auf ein Entgraten verzichtet werden kann, kostengünstig herzustellen. Durch die erfindungsgemäßen Führungshilfen und das funktionelle Clip-System ist die Montage leicht und schnell durchführbar. Bei einer Nutzung der Bauteile als Seitenteile und Gehäusemantel zur Herstellung eines Gebläsegehäuses erlaubt die erfindungsgemäße Ausführung einen vibrationslosen Betrieb, denn das als Gehäusemantel eingesetzte Stanzelement ist durch Federbügel in axialer und durch die Erhöhungen in radialer Richtung vibrationsgedämpft.The component according to the invention is that deburring is dispensed with can manufacture inexpensively. Through the guide aids and the functional clip system makes installation quick and easy. At a Use of the components as side parts and housing jacket to produce a Blower housing allows the embodiment of the invention a vibration-free Operation, because the punching element used as the casing is by spring clip vibration-damped in the axial direction and by the elevations in the radial direction.

Weitere vorteilhafte Ausgestaltungsmerkmale der Erfindung sind in den Unteransprüchen enthalten.Further advantageous design features of the invention are in the subclaims contain.

Anhand eines in der Zeichnung veranschaulichten Ausführungsbeispiels wird im folgenden die Erfindung genauer erläutert. Es zeigen:

Figur 1
ein erfindungsgemäßes Spiralgehäuse für ein Radialgebläse mit demontierter Seitenwand;
Figur 2
eine Ausschnittvergrößerung der in Figur 1 dargestellten Bereiche I;
Figur 3
eine Ausschnittvergrößerung der in Figur 1 dargestellten Bereiche I in zusammengefügtem Zustand;
Figur 4
eine Ausschnittvergrößerung des in Figur 1 eingezeichneten Bereiches II.
The invention is explained in more detail below on the basis of an exemplary embodiment illustrated in the drawing. Show it:
Figure 1
an inventive spiral housing for a radial fan with the side wall removed;
Figure 2
an enlarged detail of the areas I shown in Figure 1;
Figure 3
an enlarged detail of the areas I shown in Figure 1 in the assembled state;
Figure 4
an enlarged detail of the area II shown in Figure 1.

In den verschiedenen Figuren der Zeichnung sind gleiche Teile stets mit denselben Bezugszeichen versehen. In the different figures of the drawing, the same parts are always the same Provide reference numerals.

Figur 1 zeigt ein erfindungsgemäßes Bauteil, ein Spiralgehäuse 1 eines Radialgebläses in halbmontiertem Zustand, bestehend aus einem metallischen Stanzelement 2, ausgeführt als Blechmantel, sowie zwei als Seitenteile dienenden Kunststoffelementen 4, in denen sich Lufteintrittsöffnungen 6 befinden. Eine nicht dargestellte elektrische Motorlüftereinheit ist in eine Motoraufnahme 8 am Verbindungspunkt jeweils dreier Streben 10, die etwa zentrisch in den Lufteintrittsöffnungen 6 miteinander verbunden sind, einsetzbar. Der Blechmantel ist durch Einführen seiner einander gegenüberliegenden Begrenzungskanten 12, insbesondere seiner Längskanten, in Führungen 14 der Seitenteile mit diesen verbindbar (vgl. auch die Figuren 2 und 3). Eine solche Führung 14 ist vorzugsweise als eine am äußeren Rand der Seitenteile umlaufend angeordnete Führungsnut, die von einem äußeren Steg 18 und einem inneren Steg 20 eingeschlossen ist, ausgebildet. Erfindungsgemäß übersteigt die Höhe des äußeren Steges 18 die Höhe des inneren Steges 20, wodurch zum einen das Gehäuse insgesamt stabilisiert und zum anderen das Einführen des Blechmantels in das jeweilige Seitenteil erleichtert wird.FIG. 1 shows a component according to the invention, a spiral housing 1 of a radial fan in a semi-assembled state, consisting of a metal stamping element 2, designed as a sheet metal jacket, and two serving as side panels Plastic elements 4, in which there are air inlet openings 6. Not one Electric motor fan unit shown is in a motor mount 8 at the connection point three struts 10 each, which are approximately centric in the air inlet openings 6 are interconnected, can be used. The sheet metal jacket is by inserting it mutually opposite boundary edges 12, in particular its Longitudinal edges, can be connected to these in guides 14 of the side parts (cf. also the Figures 2 and 3). Such a guide 14 is preferably as one on the outer edge of the side parts circumferentially arranged guide groove, which by an outer web 18th and an inner web 20 is included. According to the invention the height of the outer web 18 exceeds the height of the inner web 20, whereby on the one hand the housing is stabilized overall and on the other hand the insertion of the Sheet metal jacket in the respective side part is facilitated.

Die Figuren 2 und 3 zeigen einen Ausschnitt einer in die Führungsnut einsetzbaren bzw. mit der Führungsnut verbundenen Begrenzungskante 12 des Blechmantels. Beim Stanzen des Blechmantels entsteht ein Grat, der das Zusammenfügen des Blechmantels mit den Seitenteilen derart behindert, dass ein zuvoriges Entgraten des Blechmantels notwendig ist. Um diesen verhältnismäßig aufwendigen Arbeitsschritt vermeiden zu können, weist der erfindungsgemäße Blechmantel des Spiralgehäuses 1 entlang seiner beiden Begrenzungskanten 12 mehrere, beispielsweise kuppelförmige, zueinander beabstandete Erhöhungen 16 auf, die in Richtung des Stanzgrates ausgeprägt sind und deren Höhe die Höhe des Stanzgrates übersteigt. Im zusammengefügten Zustand des Blechmantels mit dem Seitenteil sind die Erhöhungen 16 innerhalb der Führungsnut angeordnet. Die Breite der erfindungsgemäßen Führungsnut entspricht etwa der Materialstärke des Blechmantels zuzüglich der Höhe der Erhöhungen 16, wodurch einerseits das Einführen des nicht entgrateten Blechmantels deutlich erleichtert und andererseits eine spielfreie Verbindung des Blechmantels mit dem Seitenteil ermöglicht wird. Der Blechmantel ist problemlos, ohne sich zu verhaken, in die Führungsnut einsetzbar, da durch die Erhöhungen 16 ein Kontakt der Begrenzungskante 12 mit der Innenseite des inneren Steges 20 vermieden wird. Figures 2 and 3 show a section of an insertable in the guide groove or boundary edge 12 of the sheet metal jacket connected to the guide groove. At the Punching the sheet metal jacket creates a burr, which is the joining of the Sheet metal jacket with the side parts so hampered that a previous deburring of the Sheet metal jacket is necessary. About this relatively complex work step To be able to avoid, the sheet metal jacket of the spiral housing 1 according to the invention along its two boundary edges 12 several, for example dome-shaped, Elevations 16 spaced apart from one another in the direction of the punch burr are pronounced and the height of which exceeds the height of the punch burr. in the The raised portions are the assembled state of the sheet metal jacket with the side part 16 arranged within the guide groove. The width of the invention The guide groove corresponds approximately to the material thickness of the sheet metal jacket plus the height of the elevations 16, whereby on the one hand the introduction of the non-deburred Sheet metal jacket significantly facilitated and on the other hand a play-free connection of the Sheet metal jacket with the side part is made possible. The sheet metal jacket is easy without to get caught, can be used in the guide groove, because of the elevations 16 Avoid contact of the boundary edge 12 with the inside of the inner web 20 becomes.

Aus dem äußeren Steg 18 der Führungsnut sind weiterhin mehrere, in die Führungsnut hineinragende Schnapphaken 22 ausgeformt, die mit Rastfenstern 24 des Blechmantels zusammenwirken (vgl. Figur 2 und 3). Zusätzlich weisen die Seitenteile an mehreren Stellen aus dem Nutgrund der Führungsnut blattfederartig wirkende, dachförmig nach innen weisende Federbügel 28 auf (vgl. Fig. 4). Derartige Federbügel 28 können auch als zusätzliche Bauteile in die Führungsnut eingesetzt werden. Die Federbügel 28 werden beim Einsetzen des Blechmantels zusammengedrückt, bis die Schnapphaken 22 in die Rastfenster 24 einrasten können. Anschließend federn sie zurück und gewährleisten durch die federbelastete Anlage der Schnapphaken 22 an den Anlagekanten der Rastfenster 24 einen spielfreien Sitz des Blechmantels in der Führungsnut des Seitenteils. Vibrationen des Blechmantels, eventuell angeregt durch den Antriebsmotor, werden durch die erfindungsgemäße Verbindung ausgeschlossen.From the outer web 18 of the guide groove are still several, in the guide groove protruding snap hooks 22 which are formed with latching windows 24 of the Coating sheet metal cooperate (see. Figures 2 and 3). In addition, the side panels in several places from the groove base of the guide groove spring clips 28 pointing inward in a roof shape (cf. FIG. 4). Such spring clips 28 can also be used as additional components in the guide groove. The Spring clips 28 are compressed when inserting the sheet metal jacket until the Snap hooks 22 can snap into the locking window 24. Then they spring back and ensure by the spring-loaded system of the snap hook 22 the contact edges of the locking window 24 a play-free seat of the sheet metal jacket in the Guide groove of the side part. Vibrations of the sheet metal jacket, possibly stimulated by the drive motor are excluded by the connection according to the invention.

Um eine einfache Montage zu ermöglichen, weist der erfindungsgemäße Blechmantel den Schnapphaken 22 gegenüberliegend jeweils eine in Richtung der Erhöhungen 16 ansteigende Schrägfläche 30 auf. Diese Schrägfläche 30 trifft als Einführ- bzw. Montagehilfe beim Zusammenfügen der beiden Bauteile zunächst auf die Nase des Schnapphakens 22 und hebt diesen leicht in die den Erhöhungen 16 entgegengesetzte Richtung an. Beim weiteren Zusammenschieben der Teile treten die Erhöhungen 16 in die Führungsnut ein, wodurch die Außenseite des Blechmantels an die Innenfläche des äußeren Stegs 18 gedrückt wird. Beim tieferen Eintreten des Blechmantels in die Führungsnut wird der Schnapphaken 22 entlang der Schrägfläche 30 bewegt und weiter angehoben, um schließlich in das Rastfenster 24 des Blechmantels einzurasten.In order to enable simple assembly, the sheet metal jacket according to the invention has opposite the snap hooks 22 in the direction of the elevations 16 rising inclined surface 30. This inclined surface 30 meets as an insertion or Assembly aid when joining the two components first onto the nose of the Snap hook 22 and lifts it slightly in the opposite of the elevations 16 Direction. When the parts are pushed further together, the elevations 16 enter the guide groove, which brings the outside of the sheet metal jacket to the inside surface of the outer web 18 is pressed. When the sheet metal jacket enters deeper Guide groove, the snap hook 22 is moved along the inclined surface 30 and further raised to finally snap into the locking window 24 of the sheet metal jacket.

Als weitere erfindungsgemäße Montagehilfe sind in der Führungsnut mehrere über den Umfang verteilte Führungsstege 32 angeordnet. Diese Führungsstege 32 verlaufen auf dem Nutgrund und verbinden den äußeren Steg 18 mit dem inneren Steg 20. Der Blechmantel weist den Führungsstegen 32 gegenüberliegende Auskerbungen 34 auf, in die die Führungsstege 32 im zusammengefügten Zustand des Blechmantels mit den Seitenteilen 4 hineinragen. Um das Zusammenfügen der Bauteile zu erleichtern sind die Führungsstege 32 und die Auskerbungen 34 im wesentlichen keilfömig ausgeführt, wobei die Breite der Führungsstege 32 ausgehend vom Nutgrund 26 in Richtung des Blechmantels abnimmt. As a further assembly aid according to the invention, several are in the guide groove Scope distributed guide webs 32 arranged. These guide webs 32 run on the groove base and connect the outer web 18 to the inner web 20. The Sheet metal jacket has notches 34 lying opposite the guide webs 32, in which the guide webs 32 in the assembled state of the sheet metal jacket Extend side panels 4. To facilitate the assembly of the components the guide webs 32 and the notches 34 are essentially wedge-shaped, the width of the guide webs 32 starting from the groove base 26 in the direction of Sheet metal sheath decreases.

Die Erfindung ist nicht auf das dargestellte und beschriebene Ausführungsbeispiel beschränkt, sondern erfaßt auch alle im Sinne der Erfindung gleich wirkenden Ausführungen. Ferner ist die Erfindung bislang auch noch nicht auf die im Anspruch 1 definierte Merkmalskombination beschränkt, sondern kann auch durch jede andere beliebige andere Kombination von bestimmten Merkmalen aller insgesamt offenbarten Einzelmerkmale definiert sein. Dies bedeutet, dass grundsätzlich praktisch jedes Einzelmerkmal des Anspruchs 1 weggelassen bzw. durch mindestens ein an anderer Stelle der Anmeldung offenbartes Einzelmerkmal ersetzt werden kann. Insofern ist der Anspruch 1 lediglich als ein erster Formulierungsversuch für eine Erfindung zu verstehen.The invention is not based on the illustrated and described embodiment limited, but also covers all those acting in the same sense in the sense of the invention Executions. Furthermore, the invention has not yet been based on that in claim 1 defined combination of features limited, but can also by any other any other combination of certain features of all disclosed Individual characteristics must be defined. This means that basically every single feature of claim 1 omitted or by at least one other Instead of the individual feature disclosed the application can be replaced. To that extent Claim 1 is only to be understood as a first attempt at formulation for an invention.

Claims (11)

Bauteil aus mindestens einem Kunststoffelement (4) und mindestens einem metallischen Stanzelement (2) mit mindestens einer Begrenzungskante (12), die in einer Führung (14) des Kunststoffelementes (4) geführt ist,
dadurch gekennzeichnet, dass das Stanzelement (2) mehrere zueinander beabstandete, in Richtung eines beim Stanzvorgang entstehenden Stanzgrates weisende Erhöhungen (16) aufweist, deren Abstand zur Begrenzungskante (12) geringer als die Tiefe der Führung (14) ist und deren Höhe mindestens der Höhe der Stanzgrates entspricht, wobei die Breite der Führung (14) etwa der Materialstärke des Stanzelementes (2) zuzüglich der Höhe der Erhöhungen (16) entspricht.Component made of at least one plastic element (4) and at least one metallic stamping element (2) with at least one boundary edge (12) which is guided in a guide (14) of the plastic element (4),
characterized in that the punching element (2) has a plurality of mutually spaced elevations (16) pointing in the direction of a punching ridge which arises during the punching process, the distance from the boundary edge (12) being less than the depth of the guide (14) and the height of at least the height corresponds to the punch burr, the width of the guide (14) corresponding approximately to the material thickness of the punch element (2) plus the height of the elevations (16). Bauteil nach Anspruch 1,
dadurch gekennzeichnet, dass die Erhöhungen (16) als kuppelförmige Ausprägungen ausgeführt sind.Component according to claim 1,
characterized in that the elevations (16) are designed as dome-shaped features. Bauteil nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Führung (14) als Führungsnut ausgebildet ist, die von einem äußeren Steg (18) und einem inneren Steg (20) eingeschlossen ist.Component according to claim 1 or 2,
characterized in that the guide (14) is designed as a guide groove which is enclosed by an outer web (18) and an inner web (20). Bauteil nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass mindestens ein Steg (18, 20) der Führung (14) mindestens einen in die Führung (14) hineinragenden Schnapphaken (22) aufweist, der in ein in dem metallischen Stanzelement (2) ausgebildetes Rastfenster (24) eingreift.Component according to one of Claims 1 to 3,
characterized in that at least one web (18, 20) of the guide (14) has at least one snap hook (22) protruding into the guide (14), which engages in a latching window (24) formed in the metallic stamping element (2). Bauteil nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Führungsnut auf ihrem Nutgrund mindestens einen dachförmig in Richtung des geführten metallischen Stanzelementes (2) ausgeformten Federbügel (28) aufweist.Component according to one of claims 1 to 4,
characterized in that the guide groove has at least one spring clip (28) formed on its groove base in the direction of the guided metal stamping element (2). Bauteil nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass das metallische Stanzelement (2) zwischen dem Rastfenster (24) und der Begrenzungskante (12) eine in Richtung des beim Stanzvorgang entstehenden Stanzgrates und von der Öffnung zur Begrenzungskante (12) ansteigende Schrägfläche (30) aufweist.Component according to one of claims 1 to 5,
characterized in that the metallic stamping element (2) between the latching window (24) and the boundary edge (12) has an inclined surface (30) which rises in the direction of the stamping burr which arises during the stamping process and from the opening to the boundary edge (12). Bauteil nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass die Führungsnut mindestens einen keilförmigen Führungssteg (32) aufweist, der in eine Auskerbung (34) des metallischen Stanzelementes (2) hineinragt, wobei die Breite des Führungsstegs (32) und der Auskerbung (34) in Richtung des Nutgrundes zunimmt.Component according to one of claims 1 to 6,
characterized in that the guide groove has at least one wedge-shaped guide web (32) which projects into a notch (34) of the metallic stamping element (2), the width of the guide web (32) and the notch (34) increasing in the direction of the groove base. Bauteil nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass das Kunststoffelement (4) als Seitenteil und das metallische Stanzelement (2) als Blechmantel eines Gebläsegehäuses, insbesondere eines Spiralgehäuses (1) eines Radialgebläses ausgeführt ist.Component according to one of claims 1 to 7,
characterized in that the plastic element (4) is designed as a side part and the metallic stamping element (2) as a sheet metal jacket of a blower housing, in particular a spiral housing (1) of a radial blower. Bauteil nach Anspruch 8,
dadurch gekennzeichnet, dass die Führungsnut umlaufend am Rand des Seitenteils angeordnet ist, wobei die Stege (18, 20) rechtwinklig zur Fläche des Seitenteils angeordnet sind.Component according to claim 8,
characterized in that the guide groove is circumferentially arranged on the edge of the side part, the webs (18, 20) being arranged at right angles to the surface of the side part. Bauteil nach Anspruch 8 oder 9,
dadurch gekennzeichnet, dass das Gebläsegehäuse einen Blechmantel und zwei Seitenteile aufweist, wobei sich die Stege (18, 20) der Seitenteile einander gegenüberliegen und der Blechmantel mit seinen beiden einander gegenüberliegenden Begrenzungskanten (12) jeweils in der Führungsnut des Seitenteils geführt ist.Component according to claim 8 or 9,
characterized in that the blower housing has a sheet metal jacket and two side parts, the webs (18, 20) of the side parts lying opposite one another and the sheet metal jacket with its two mutually opposite boundary edges (12) each being guided in the guide groove of the side part. Bauteil nach einem der Ansprüche 3 bis 10,
dadurch gekennzeichnet, dass die Höhe des äußeren Steges (18) die Höhe des inneren Steges (20) übersteigt.Component according to one of Claims 3 to 10,
characterized in that the height of the outer web (18) exceeds the height of the inner web (20).
EP01108818A 2000-05-24 2001-04-07 Snap-in connection for a spiral housing Expired - Lifetime EP1158176B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20009326U 2000-05-24
DE20009326U DE20009326U1 (en) 2000-05-24 2000-05-24 Snap connection for a spiral housing

Publications (2)

Publication Number Publication Date
EP1158176A1 true EP1158176A1 (en) 2001-11-28
EP1158176B1 EP1158176B1 (en) 2002-11-20

Family

ID=7941958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01108818A Expired - Lifetime EP1158176B1 (en) 2000-05-24 2001-04-07 Snap-in connection for a spiral housing

Country Status (6)

Country Link
EP (1) EP1158176B1 (en)
AT (1) ATE228212T1 (en)
DE (2) DE20009326U1 (en)
ES (1) ES2185607T3 (en)
HK (1) HK1038391A1 (en)
PT (1) PT1158176E (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346187A1 (en) * 2003-10-02 2005-04-21 Behr Gmbh & Co Kg fan

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2067665A (en) * 1979-12-13 1981-07-30 Bosch Gmbh Robert Radial fan
EP0195149A1 (en) * 1985-03-20 1986-09-24 Curver Packaging Ltd. Container with closure
EP0540475A2 (en) * 1991-10-30 1993-05-05 E.J. Brooks Company Locking or security seal
WO1995032363A1 (en) * 1994-05-25 1995-11-30 Tec Air, Inc. Blower housing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2067665A (en) * 1979-12-13 1981-07-30 Bosch Gmbh Robert Radial fan
EP0195149A1 (en) * 1985-03-20 1986-09-24 Curver Packaging Ltd. Container with closure
EP0540475A2 (en) * 1991-10-30 1993-05-05 E.J. Brooks Company Locking or security seal
WO1995032363A1 (en) * 1994-05-25 1995-11-30 Tec Air, Inc. Blower housing

Also Published As

Publication number Publication date
ES2185607T3 (en) 2003-05-01
DE50100057D1 (en) 2003-01-02
HK1038391A1 (en) 2002-03-15
EP1158176B1 (en) 2002-11-20
ATE228212T1 (en) 2002-12-15
DE20009326U1 (en) 2001-09-27
PT1158176E (en) 2003-03-31

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