EP2391828A2 - Vacuum pump housing cover - Google Patents

Vacuum pump housing cover

Info

Publication number
EP2391828A2
EP2391828A2 EP10707200A EP10707200A EP2391828A2 EP 2391828 A2 EP2391828 A2 EP 2391828A2 EP 10707200 A EP10707200 A EP 10707200A EP 10707200 A EP10707200 A EP 10707200A EP 2391828 A2 EP2391828 A2 EP 2391828A2
Authority
EP
European Patent Office
Prior art keywords
vacuum pump
pump housing
housing cover
connecting piece
housing part
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
EP10707200A
Other languages
German (de)
French (fr)
Other versions
EP2391828B1 (en
Inventor
Ralf Friedmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magna Powertrain Hueckeswagen GmbH
Original Assignee
Ixetic Hueckeswagen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ixetic Hueckeswagen GmbH filed Critical Ixetic Hueckeswagen GmbH
Publication of EP2391828A2 publication Critical patent/EP2391828A2/en
Application granted granted Critical
Publication of EP2391828B1 publication Critical patent/EP2391828B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F04C2230/231—Manufacture essentially without removing material by permanently joining parts together by welding

Definitions

  • the invention relates to a vacuum pump housing cover with a flat contact surface for mounting the vacuum pump housing cover.
  • the invention further relates to a method for producing such a vacuum pump housing cover.
  • the object of the invention is to provide a vacuum pump housing cover with a flat contact surface for mounting the vacuum pump housing cover, which is simple and inexpensive to produce.
  • a vacuum pump housing cover with a flat contact surface for mounting the vacuum pump housing cover in that the vacuum pump housing cover is designed as a steel forming part with a through hole which is surrounded on the side facing away from the planar contact surface of the vacuum pump housing cover by a nozzle housing part, which also serves as a forming part made of steel and is firmly bonded to the vacuum pump housing cover.
  • the vacuum pump housing cover according to the invention makes it possible in a simple manner to connect a consumer to a vacuum pump equipped with the vacuum pump housing cover.
  • the consumer is preferably a secondary consumer, since the main connection of the vacuum pump is preferably provided on a vacuum pump housing, which can be closed by the vacuum pump housing cover.
  • a preferred embodiment of the vacuum pump housing cover is characterized in that the planar contact surface has a flatness of about five hundredths of a millimeter.
  • the inventive attachment of the nozzle housing part to the vacuum pump housing cover can be ensured in a simple manner, the desired flatness of the contact surface without reworking.
  • the contact surface of the vacuum pump housing cover is attached to the vacuum pump housing of a vacuum pump. The specified flatness of the contact surface is required to ensure adequate sealing at the interface between the vacuum pump housing and the vacuum pump housing cover.
  • a further preferred embodiment of the vacuum pump housing cover is characterized in that the nozzle housing part is connected to the vacuum pump housing cover by a welded connection, in particular a projection welding connection.
  • a welded connection in particular a projection welding connection.
  • the projection welding has proven to be particularly advantageous, since in this case an undesirable deformation or impairment of the flatness of the flat contact surface of the vacuum pump housing cover can be prevented.
  • Bump welding is a resistance pressure welding process in which the abutting components only touch each other in bumps, warts or beads. Resistance heating takes place at the points of contact in order to produce a cohesive connection.
  • the components are preferably joined under pressure, wherein the humps, warts or beads are partially or completely leveled.
  • a further preferred embodiment of the vacuum pump housing cover is characterized in that in the nozzle housing part, a connecting piece is partially received, which extends through an opening of the nozzle housing part to the outside.
  • the connecting piece is designed, for example, as a casting, preferably made of an aluminum-zinc alloy, and serves to connect a secondary consumer to the vacuum pump housing cover to the vacuum pump.
  • the vacuum pump housing cover is characterized in that the nozzle housing part has substantially the shape of a straight circular cylinder jacket with a peripheral edge which is angled outwardly to form a mounting flange.
  • the mounting flange serves to connect the socket housing part cohesively with the vacuum pump housing cover.
  • a plurality of recesses or projections are preferably formed, which serve to connect the mounting flange by projection welding material fit with the vacuum pump housing cover.
  • a further preferred embodiment of the vacuum pump housing cover is characterized in that the nozzle housing part has a further peripheral edge, which is angled inwardly to the connecting piece in the neck housing part to halves.
  • the inwardly angled peripheral edge preferably forms a collar which surrounds a central through hole.
  • a further preferred embodiment of the vacuum pump housing cover is characterized in that the connecting piece comprises a base body which is arranged in the nozzle housing and from which a nozzle body extends through the opening of the nozzle housing part to the outside.
  • the main body is preferably biased against the inwardly angled peripheral edge of the nozzle housing part.
  • a further preferred embodiment of the vacuum pump housing cover is characterized in that in the nozzle housing part a check valve device is received.
  • the check valve means serves to allow fluid communication between the spigot and the through hole in the vacuum pump housing cover from outside to inside, and to prevent from the inside out.
  • the check valve device prevents air exiting from a vacuum pump housing cover equipped with a vacuum pump through the connection piece.
  • the non-return valve device is arranged, in particular clamped, between one or the connecting piece, in particular one or the base body of the connecting piece, and the vacuum pump housing cover.
  • the check valve device preferably forms, with the connection piece and the socket housing part, a mounting unit or unit which is fastened to the vacuum pump housing cover by the welded connection between the socket housing part and the vacuum pump housing cover.
  • a further preferred embodiment of the vacuum pump housing cover is characterized in that the non-return valve device comprises a closing body, which is movable against a stop body.
  • the stopper body is preferably clamped between the check valve device and the vacuum pump housing cover.
  • a further preferred embodiment of the vacuum pump housing cover is characterized in that between the check valve device and the connecting piece, in particular the main body of the connecting piece, an O-ring is arranged, which serves the interface between the connecting piece, in particular the - A -
  • the O-ring is preferably used in addition to sealing also to bias the main body of the connecting piece against the inwardly angled peripheral edge of the nozzle housing part and the check valve device or the stopper body against the Vakuumpumpenge- korusedeckel.
  • a further preferred embodiment of the vacuum pump housing cover is characterized in that between the stop body or the check valve device and the vacuum pump housing cover an O-ring is arranged, which serves to seal the interface between the stop body or the check valve device and the vacuum pump housing cover and / or a biasing force on the Apply stopper or the check valve device.
  • the O-ring is preferably used in addition to sealing also to bias the stop body or the check valve device against the main body of the connecting piece and / or against the inwardly angled peripheral edge of the support zengephinuseteils.
  • a further preferred embodiment of the vacuum pump housing cover is characterized in that at least one O-ring is provided for sealing the interface between the nozzle housing part and the vacuum pump housing cover and / or for bracing arranged in the nozzle housing part components.
  • an O-ring is sealingly disposed between the check valve means and the spigot housing part and the vacuum pump housing cover, respectively.
  • Another O-ring is preferably arranged sealingly between the check valve device and the connecting piece or the nozzle housing part.
  • a further preferred embodiment of the vacuum pump housing cover is characterized in that the two forming parts are designed as finished punched parts. Ready falling means in this context that the formed parts after punching out of a punching tool fall out. Further processing of the stamped parts is not required.
  • the vacuum pump housing cover and the nozzle housing part are formed by punching from a steel sheet material.
  • the stamped neck housing part is connected by welding, in particular by projection welding, firmly bonded to the vacuum pump housing cover.
  • the two formed parts are preferably welded together without further processing after punching. By projection welding, the two forming parts can be materially connected to each other without a desired flatness of the contact surface of the vacuum pump housing cover is affected. Before welding the two forming parts of the connecting piece and the check valve device are inserted into the nozzle housing part.
  • a preferred embodiment of the method is characterized in that prior to welding of the neck housing part with the vacuum pump housing cover one or the main body of the connecting piece, one or the check valve device, one or the closing body, a or the stopper body and / or one or the O-ring or the O-rings are inserted into the nozzle housing part or will.
  • a mounting unit or assembly is provided which is secured to the vacuum pump housing cover by welding the neck housing part to the vacuum pump housing cover.
  • the individual components are preferably dimensioned so that at least one of the two O-rings is compressed when welding the nozzle housing part to the Vakuumpumpengephaseusedeckel to clamp or clamp the remaining components between the vacuum pump housing cover and the inwardly angled peripheral edge of the nozzle housing part.
  • Figure 1 shows a vacuum pump housing cover according to the invention in plan view
  • FIG. 2 shows the view of a section along the line IUI in Figure 1.
  • a vacuum pump housing cover 1 is shown in various views.
  • the vacuum pump housing cover 1 is designed as a formed part, in particular as a stamped part, and has substantially the shape of a circular disc 3 with a constant thickness.
  • One side of the circular disc 3 forms a flat contact surface 4, which serves to grow the vacuum pump housing cover 1 to a (not shown) housing a vacuum pump.
  • the circular disc 3 outside a plurality of eyes 5, each with a through hole 6.
  • the through-holes 6 are used to perform fastening means, such as fastening screws, with which the vacuum pump housing lid 1 can be fastened to the housing of the vacuum pump.
  • the vacuum pump serves, for example, to generate a vacuum in a brake booster of a motor vehicle. Then the brake booster is referred to as the main consumer.
  • Other consumers which can also be connected to the vacuum pump, are referred to as secondary consumers.
  • the auxiliary consumers may be, for example, control flaps of an internal combustion engine.
  • the main consumer is preferably connected to the vacuum pump housing.
  • the auxiliary consumer is preferably connected to the vacuum pump housing cover 1, that via the further through hole 10, a vacuum is applied to the secondary consumer.
  • a socket housing part 14 which is likewise designed as a shaped part, in particular as a stamped part, is connected to the vacuum pump housing cover 1 on an outer side 15 of the vacuum pump housing cover 1 outside the through-hole 10 with a material fit.
  • the neck housing part 14 essentially has the shape of a straight circular cylinder jacket 16, the cylinder axis of which is arranged perpendicular to the vacuum pump housing cover 1.
  • the nozzle housing part 14 has, on the end face of the circular cylinder jacket 16 facing the vacuum pump housing cover 1, an outwardly angled peripheral edge 18, which forms a mounting flange with which the nozzle housing part 14 is fastened to the vacuum pump housing cover 1.
  • the nozzle housing part 14 has on the end face of the circular cylinder jacket 16 facing away from the vacuum pump housing cover 1 a radially inwardly angled peripheral edge 26 which delimits a central through hole 28.
  • a connecting piece 30 extends with a central through hole 31, which extends through a base body 32 and a nozzle body 33 of the connecting piece 30 therethrough.
  • the main body 32 of the connection piece 30 is encompassed on the outside by the angled peripheral edge 26 of the socket housing part 14.
  • a check valve device 36 is disposed in the nozzle housing part 14.
  • the non-return valve device 36 comprises a closing body 38 and a stop body 40, which has passage channels (not shown) which allow fluid communication between the through-hole 31 of the connecting piece 30 and the through-hole 10 of the vacuum pump housing cover 1, depending on the position of the closing body 38.
  • the closing body 38 prevents air from escaping from the interior of a vacuum pump mounted on the contact surface 4 through the through-hole 31 of the connecting piece 30.
  • the preferably umbrella-like closing body 38 allows air to be drawn through the through-hole 31 into the interior of the vacuum pump in order to apply a vacuum to the secondary consumer.
  • an O-ring 41 is arranged for sealing purposes.
  • Another O-ring 42 is arranged for sealing purposes on an interface between the check valve device 36, the base body 32 of the connecting piece 30 and the circular cylinder jacket 16 of the nozzle housing part 14.
  • the O-rings 41, 42 prevent undesired entry or exit of air into or out of the socket housing part 14.
  • the two O-rings 41, 42 used to brace the stopper body 40, the check valve 36 and the body 32 of the connecting piece 30 between the vacuum pump housing cover 1 and the inwardly angled peripheral edge 26 of the nozzle housing part 14.
  • the main body 32 of the connection socket 30 so inserted into the socket housing part 14, that the nozzle body 33 protrudes through the central through hole 28 from the nozzle housing part 14.
  • the O-ring 42 is inserted.
  • the check valve device 36 is inserted with the closing body 38.
  • the stopper body 40 is inserted with the O-ring 41.
  • the pre-assembled mounting unit or unit is then attached to the vacuum pump housing cover 1 by welding, in particular projection welding.
  • welding in particular projection welding.
  • arranged in the nozzle housing part 14 components by compressing the O-rings 41, 42 against each other and between the vacuum pump housing cover 1 and the inwardly angled peripheral edge 26 of the nozzle housing part 14 braced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)
  • Non-Positive Displacement Air Blowers (AREA)

Abstract

The invention relates to a vacuum pump housing cover, comprising a planar contact surface for attaching the vacuum pump housing cover. In order to create a vacuum pump housing cover which has a simple design and is cost-effective to produce, the vacuum pump housing cover is designed as a formed part which is made of steel and has a through hole and which, on the side of the vacuum pump housing cover facing away from the planar abutment surface, is surrounded by a connector housing part that is likewise designed as a formed part made of steel and bonded to the vacuum pump housing cover.

Description

Vakuumpumpengehäusedeckel Vacuum cover
Die Erfindung betrifft einen Vakuumpumpengehäusedeckel mit einer ebenen Anlagefläche zum Anbauen des Vakuumpumpengehäusedeckels. Die Erfindung betrifft des Weiteren ein Verfahren zur Herstellung eines derartigen Vakuumpumpengehäusedeckels.The invention relates to a vacuum pump housing cover with a flat contact surface for mounting the vacuum pump housing cover. The invention further relates to a method for producing such a vacuum pump housing cover.
Aus der internationalen Veröffentlichung WO 2004/065795 A1 ist eine Vakuumpumpe mit einem Druckgussgehäuse bekannt, an dem ein Stutzenflansch eines Stutzenanschlusses mit Hilfe von Befestigungsschrauben befestigt ist.International Publication WO 2004/065795 A1 discloses a vacuum pump with a die-cast housing, to which a nozzle flange of a nozzle connection is fastened by means of fastening screws.
Aufgabe der Erfindung ist es, einen Vakuumpumpengehäusedeckel mit einer ebenen Anlagefläche zum Anbauen des Vakuumpumpengehäusedeckels zu schaffen, der einfach aufgebaut und kostengünstig herstellbar ist.The object of the invention is to provide a vacuum pump housing cover with a flat contact surface for mounting the vacuum pump housing cover, which is simple and inexpensive to produce.
Die Aufgabe ist bei einem Vakuumpumpengehäusedeckel mit einer ebenen Anlagefläche zum Anbauen des Vakuumpumpengehäusedeckels dadurch gelöst, dass der Vakuumpumpengehäusedeckel als Umformteil aus Stahl mit einem Durchgangsloch ausgeführt ist, das auf der der ebenen Anlagefläche abgewandten Seite des Vakuumpumpengehäusedeckels von einem Stutzengehäuseteil umgeben ist, das ebenfalls als Umformteil aus Stahl ausgeführt und stoffschlüssig mit dem Vakuumpumpengehäusedeckel verbunden ist. Der erfindungsgemäße Vakuumpumpengehäusedeckel ermöglicht auf einfache Art und Weise den Anschluss eines Verbrauchers an eine mit dem Vakuumpumpengehäusedeckel ausgestattete Vakuumpumpe. Bei dem Verbraucher handelt es sich vorzugsweise um einen Nebenverbraucher, da der Hauptanschluss der Vakuumpumpe vorzugsweise an einem Vakuumpumpengehäuse vorgesehen ist, das durch den Vakuumpumpengehäusedeckel verschließbar ist.The object is achieved in a vacuum pump housing cover with a flat contact surface for mounting the vacuum pump housing cover in that the vacuum pump housing cover is designed as a steel forming part with a through hole which is surrounded on the side facing away from the planar contact surface of the vacuum pump housing cover by a nozzle housing part, which also serves as a forming part made of steel and is firmly bonded to the vacuum pump housing cover. The vacuum pump housing cover according to the invention makes it possible in a simple manner to connect a consumer to a vacuum pump equipped with the vacuum pump housing cover. The consumer is preferably a secondary consumer, since the main connection of the vacuum pump is preferably provided on a vacuum pump housing, which can be closed by the vacuum pump housing cover.
Ein bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass die ebene Anlagefläche eine Ebenheit von etwa fünf Hundertstel Millimeter aufweist. Durch die erfindungsgemäße Anbringung des Stutzengehäuseteils an dem Vakuumpumpengehäusedeckel kann auf einfache Art und Weise die gewünschte Ebenheit der Anlagefläche ohne Nachbearbeiten sichergestellt werden. Mit der Anlagefläche wird der Vakuumpumpengehäusedeckel an das Vakuumpumpengehäuse einer Vakuumpumpe angebaut. Die angegebene Ebenheit der Anlagefläche wird benötigt, um eine ausreichende Dich- tigkeit an der Schnittstelle zwischen dem Vakuumpumpengehäuse und dem Vakuumpumpen- gehäusedeckel sicherzustellen.A preferred embodiment of the vacuum pump housing cover is characterized in that the planar contact surface has a flatness of about five hundredths of a millimeter. The inventive attachment of the nozzle housing part to the vacuum pump housing cover can be ensured in a simple manner, the desired flatness of the contact surface without reworking. The contact surface of the vacuum pump housing cover is attached to the vacuum pump housing of a vacuum pump. The specified flatness of the contact surface is required to ensure adequate sealing at the interface between the vacuum pump housing and the vacuum pump housing cover.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass das Stutzengehäuseteil durch eine Schweißverbindung, insbesondere eine Buckelschweißverbindung, mit dem Vakuumpumpengehäusedeckel verbunden ist. Im Rahmen der vorliegenden Erfindung wurde die Anwendung von verschiedenen Schweißverfahren untersucht. Dabei hat sich das Buckelschweißen als besonders vorteilhaft erwiesen, da hierbei eine unerwünschte Verformung beziehungsweise Beeinträchtigung der Ebenheit der ebenen Anlagefläche des Vakuumpumpengehäusedeckels verhindert werden kann. Beim Buckelschweißen handelt es sich um ein Widerstandspressschweißverfahren, bei dem die aneinander anliegenden Bauteile sich nur in Buckeln, Warzen oder Sicken berühren. An den Berührungsstellen erfolgt eine Widerstandswärmung, um eine stoffschlüssige Verbindung zu erzeugen. Die Bauteile werden vorzugsweise unter Druck gefügt, wobei die Buckel, Warzen oder Sicken teilweise oder völlig eingeebnet werden.A further preferred embodiment of the vacuum pump housing cover is characterized in that the nozzle housing part is connected to the vacuum pump housing cover by a welded connection, in particular a projection welding connection. In the context of the present invention, the application of various welding methods has been investigated. In this case, the projection welding has proven to be particularly advantageous, since in this case an undesirable deformation or impairment of the flatness of the flat contact surface of the vacuum pump housing cover can be prevented. Bump welding is a resistance pressure welding process in which the abutting components only touch each other in bumps, warts or beads. Resistance heating takes place at the points of contact in order to produce a cohesive connection. The components are preferably joined under pressure, wherein the humps, warts or beads are partially or completely leveled.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass in dem Stutzengehäuseteil ein Anschlussstutzen teilweise aufgenommen ist, der sich durch eine Öffnung des Stutzengehäuseteils hindurch nach außen erstreckt. Der Anschlussstutzen ist zum Beispiel als Gussteil, vorzugsweise aus einer Aluminium-Zink-Legierung, ausgeführt und dient dazu, vorzugsweise einen Nebenverbraucher an dem Vakuumpumpengehäusedeckel an die Vakuumpumpe anzuschließen.A further preferred embodiment of the vacuum pump housing cover is characterized in that in the nozzle housing part, a connecting piece is partially received, which extends through an opening of the nozzle housing part to the outside. The connecting piece is designed, for example, as a casting, preferably made of an aluminum-zinc alloy, and serves to connect a secondary consumer to the vacuum pump housing cover to the vacuum pump.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass das Stutzengehäuseteil im Wesentlichen die Gestalt eines geraden Kreiszylindermantels mit einem Umfangsrand aufweist, der zur Ausbildung eines Befestigungsflansches nach außen abgewinkelt ist. Der Befestigungsflansch dient dazu, das Stutzengehäuseteil stoffschlüssig mit dem Vakuumpumpengehäusedeckel zu verbinden. An dem Befestigungsflansch sind vorzugsweise mehrere Vertiefungen oder Buckel ausgebildet, die dazu dienen, den Befestigungsflansch durch Buckelschweißen stoffschlüssig mit dem Vakuumpumpengehäusedeckel zu verbinden.Another preferred embodiment of the vacuum pump housing cover is characterized in that the nozzle housing part has substantially the shape of a straight circular cylinder jacket with a peripheral edge which is angled outwardly to form a mounting flange. The mounting flange serves to connect the socket housing part cohesively with the vacuum pump housing cover. At the mounting flange a plurality of recesses or projections are preferably formed, which serve to connect the mounting flange by projection welding material fit with the vacuum pump housing cover.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass das Stutzengehäuseteil einen weiteren Umfangsrand aufweist, der nach innen abgewinkelt ist, um den Anschlussstutzen in dem Stutzengehäuseteil zu hal- ten. Der nach innen abgewinkelte Umfangsrand bildet vorzugsweise einen Kragen, der ein zentrales Durchgangsloch umgibt.A further preferred embodiment of the vacuum pump housing cover is characterized in that the nozzle housing part has a further peripheral edge, which is angled inwardly to the connecting piece in the neck housing part to halves. The inwardly angled peripheral edge preferably forms a collar which surrounds a central through hole.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass der Anschlussstutzen einen Grundkörper umfasst, der in dem Stutzengehäuse angeordnet ist und von dem sich ein Stutzenkörper durch die Öffnung des Stutzengehäuseteils hindurch nach außen erstreckt. Der Grundkörper ist vorzugsweise gegen den nach innen abgewinkelten Umfangsrand des Stutzengehäuseteils vorgespannt.A further preferred embodiment of the vacuum pump housing cover is characterized in that the connecting piece comprises a base body which is arranged in the nozzle housing and from which a nozzle body extends through the opening of the nozzle housing part to the outside. The main body is preferably biased against the inwardly angled peripheral edge of the nozzle housing part.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass in dem Stutzengehäuseteil eine Rückschlagventileinrichtung aufgenommen ist. Die Rückschlagventileinrichtung dient dazu, eine Fluidverbindung zwischen dem Anschlussstutzen und dem Durchgangsloch im Vakuumpumpengehäusedeckel von außen nach innen zu ermöglichen, und von innen nach außen zu verhindern. Durch die Rückschlagventileinrichtung wird verhindert, dass Luft aus einer mit dem Vakuumpumpengehäusedeckel ausgestatteten Vakuumpumpe durch den Anschlussstutzen austritt.A further preferred embodiment of the vacuum pump housing cover is characterized in that in the nozzle housing part a check valve device is received. The check valve means serves to allow fluid communication between the spigot and the through hole in the vacuum pump housing cover from outside to inside, and to prevent from the inside out. By the check valve device prevents air exiting from a vacuum pump housing cover equipped with a vacuum pump through the connection piece.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass die Rückschlagventileinrichtung zwischen einem beziehungsweise dem Anschlussstutzen, insbesondere einem beziehungsweise dem Grundkörper des Anschlussstutzens, und dem Vakuumpumpengehäusedeckel angeordnet, insbesondere eingespannt, ist. Die Rückschlagventileinrichtung bildet vorzugsweise mit dem Anschlussstutzen und dem Stutzengehäuseteil eine Montageeinheit beziehungsweise Baueinheit, die durch die Schweißverbindung zwischen dem Stutzengehäuseteil und dem Vakuumpumpengehäusedeckel an dem Vakuumpumpengehäusedeckel befestigt ist.Another preferred exemplary embodiment of the vacuum pump housing cover is characterized in that the non-return valve device is arranged, in particular clamped, between one or the connecting piece, in particular one or the base body of the connecting piece, and the vacuum pump housing cover. The check valve device preferably forms, with the connection piece and the socket housing part, a mounting unit or unit which is fastened to the vacuum pump housing cover by the welded connection between the socket housing part and the vacuum pump housing cover.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass die Rückschlagventileinrichtung einen Schließkörper umfasst, der gegen einen Anschlagkörper bewegbar ist. Der Anschlagkörper ist vorzugsweise zwischen der Rückschlagventileinrichtung und dem Vakuumpumpengehäusedeckel eingespannt.A further preferred embodiment of the vacuum pump housing cover is characterized in that the non-return valve device comprises a closing body, which is movable against a stop body. The stopper body is preferably clamped between the check valve device and the vacuum pump housing cover.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass zwischen der Rückschlagventileinrichtung und dem Anschlussstutzen, insbesondere dem Grundkörper des Anschlussstutzens, ein O-Ring angeordnet ist, der dazu dient, die Schnittstelle zwischen dem Anschlussstutzen, insbesondere dem - A -A further preferred embodiment of the vacuum pump housing cover is characterized in that between the check valve device and the connecting piece, in particular the main body of the connecting piece, an O-ring is arranged, which serves the interface between the connecting piece, in particular the - A -
Grundkörper des Anschlussstutzens, und dem Stutzengehäuseteil abzudichten und/oder eine Vorspannkraft auf den Anschlussstutzen, insbesondere dem Grundkörper des Anschlussstutzens, beziehungsweise die Rückschlagventileinrichtung aufzubringen. Der O-Ring dient vorzugsweise zusätzlich zum Abdichten auch dazu, den Grundkörper des Anschlussstutzens gegen den nach innen abgewinkelten Umfangsrand des Stutzengehäuseteils und die Rückschlagventileinrichtung beziehungsweise den Anschlagkörper gegen den Vakuumpumpenge- häusedeckel vorzuspannen.Seal the main body of the connecting piece, and the nozzle housing part and / or apply a biasing force on the connecting piece, in particular the main body of the connecting piece, or the check valve device. The O-ring is preferably used in addition to sealing also to bias the main body of the connecting piece against the inwardly angled peripheral edge of the nozzle housing part and the check valve device or the stopper body against the Vakuumpumpenge- häusedeckel.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass zwischen dem Anschlagkörper beziehungsweise der Rückschlagventileinrichtung und dem Vakuumpumpengehäusedeckel ein O-Ring angeordnet ist, der dazu dient, die Schnittstelle zwischen dem Anschlagkörper beziehungsweise der Rückschlagventileinrichtung und dem Vakuumpumpengehäusedeckel abzudichten und/oder eine Vorspannkraft auf den Anschlagkörper beziehungsweise die Rückschlagventileinrichtung aufzubringen. Der O-Ring dient vorzugsweise zusätzlich zum Abdichten auch dazu, den Anschlagkörper beziehungsweise die Rückschlagventileinrichtung gegen den Grundkörper des Anschlussstutzens und/oder gegen den nach innen abgewinkelten Umfangsrand des Stüt- zengehäuseteils vorzuspannen.A further preferred embodiment of the vacuum pump housing cover is characterized in that between the stop body or the check valve device and the vacuum pump housing cover an O-ring is arranged, which serves to seal the interface between the stop body or the check valve device and the vacuum pump housing cover and / or a biasing force on the Apply stopper or the check valve device. The O-ring is preferably used in addition to sealing also to bias the stop body or the check valve device against the main body of the connecting piece and / or against the inwardly angled peripheral edge of the support zengehäuseteils.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass zur Abdichtung der Schnittstelle zwischen dem Stutzengehäuseteil und dem Vakuumpumpengehäusedeckel und/oder zum Verspannen von in dem Stutzengehäuseteil angeordneten Bauteilen mindestens ein O-Ring vorgesehen ist. Vorzugsweise ist ein O-Ring zwischen der Rückschlagventileinrichtung beziehungsweise dem Stutzengehäuseteil und dem Vakuumpumpengehäusedeckel dichtend angeordnet. Ein weiterer O-Ring ist vorzugsweise zwischen der Rückschlagventileinrichtung und dem Anschlussstutzen beziehungsweise dem Stutzengehäuseteil dichtend angeordnet.A further preferred embodiment of the vacuum pump housing cover is characterized in that at least one O-ring is provided for sealing the interface between the nozzle housing part and the vacuum pump housing cover and / or for bracing arranged in the nozzle housing part components. Preferably, an O-ring is sealingly disposed between the check valve means and the spigot housing part and the vacuum pump housing cover, respectively. Another O-ring is preferably arranged sealingly between the check valve device and the connecting piece or the nozzle housing part.
Ein weiteres bevorzugtes Ausführungsbeispiel des Vakuumpumpengehäusedeckels ist dadurch gekennzeichnet, dass die beiden Umformteile als fertigfallende Stanzteile ausgeführt sind. Fertigfallend bedeutet in diesem Zusammenhang, dass die Umformteile nach dem Stanzen fertig aus einem Stanzwerkzeug herausfallen. Eine weitere Bearbeitung der Stanzteile ist nicht erforderlich. Bei einem Verfahren zur Herstellung eines vorab beschriebenen Vakuumpumpengehäusede- ckels ist die vorab angegebene Aufgabe durch folgende Schritte gelöst: Der Vakuumpumpen- gehäusedeckel und das Stutzengehäuseteil werden durch Stanzen aus einem Stahlblechmaterial gebildet. Das gestanzte Stutzengehäuseteil wird durch Schweißen, insbesondere durch Buckelschweißen, stoffschlüssig mit dem Vakuumpumpengehäusedeckel verbunden. Die beiden Umformteile werden vorzugsweise ohne eine weitere Bearbeitung nach dem Stanzen miteinander verschweißt. Durch das Buckelschweißen können die beiden Umformteile stoffschlüssig miteinander verbunden werden, ohne dass eine gewünschte Ebenheit der Anlagefläche des Vakuumpumpengehäusedeckels beeinträchtigt wird. Vor dem Verschweißen der beiden Umformteile werden der Anschlussstutzen und die Rückschlagventileinrichtung in das Stutzengehäuseteil eingelegt.A further preferred embodiment of the vacuum pump housing cover is characterized in that the two forming parts are designed as finished punched parts. Ready falling means in this context that the formed parts after punching out of a punching tool fall out. Further processing of the stamped parts is not required. In a method of manufacturing a vacuum pump housing cover described above, the above object is achieved by the following steps. The vacuum pump housing cover and the nozzle housing part are formed by punching from a steel sheet material. The stamped neck housing part is connected by welding, in particular by projection welding, firmly bonded to the vacuum pump housing cover. The two formed parts are preferably welded together without further processing after punching. By projection welding, the two forming parts can be materially connected to each other without a desired flatness of the contact surface of the vacuum pump housing cover is affected. Before welding the two forming parts of the connecting piece and the check valve device are inserted into the nozzle housing part.
Ein bevorzugtes Ausführungsbeispiel des Verfahrens ist dadurch gekennzeichnet, dass vor dem Verschweißen des Stutzengehäuseteils mit dem Vakuumpumpengehäusedeckel ein beziehungsweise der Grundkörper eines beziehungsweise des Anschlussstutzens, eine beziehungsweise die Rückschlagventileinrichtung, ein beziehungsweise der Schließkörper, ein beziehungsweise der Anschlagkörper und/oder ein beziehungsweise der O-Ring beziehungsweise die O-Ringe in das Stutzengehäuseteil eingelegt werden beziehungsweise wird. Durch das Einlegen von einem, mehreren oder allen der genannten Bauteile wird eine Montageeinheit oder Baueinheit geschaffen, die durch Verschweißen des Stutzengehäuseteils mit dem Vakuumpumpengehäusedeckel an dem Vakuumpumpengehäusedeckel befestigt wird. Dabei sind die einzelnen Bauteile vorzugsweise so bemessen, dass mindestens einer der beiden O- Ringe beim Anschweißen des Stutzengehäuseteils an dem Vakuumpumpengehäusedeckel komprimiert wird, um die übrigen Bauteile zwischen dem Vakuumpumpengehäusedeckel und dem nach innen abgewinkelten Umfangsrand des Stutzengehäuseteils zu verspannen beziehungsweise einzuspannen.A preferred embodiment of the method is characterized in that prior to welding of the neck housing part with the vacuum pump housing cover one or the main body of the connecting piece, one or the check valve device, one or the closing body, a or the stopper body and / or one or the O-ring or the O-rings are inserted into the nozzle housing part or will. By inserting one, several or all of said components, a mounting unit or assembly is provided which is secured to the vacuum pump housing cover by welding the neck housing part to the vacuum pump housing cover. In this case, the individual components are preferably dimensioned so that at least one of the two O-rings is compressed when welding the nozzle housing part to the Vakuumpumpengehäusedeckel to clamp or clamp the remaining components between the vacuum pump housing cover and the inwardly angled peripheral edge of the nozzle housing part.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung ein Ausführungsbeispiel im Einzelnen beschrieben ist. Es zeigen:Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, an embodiment is described in detail. Show it:
Figur 1 einen erfindungsgemäßen Vakuumpumpengehäusedeckel in der Draufsicht undFigure 1 shows a vacuum pump housing cover according to the invention in plan view and
Figur 2 die Ansicht eines Schnitts entlang der Linie IUI in Figur 1. In den Figuren 1 und 2 ist ein Vakuumpumpengehäusedeckel 1 in verschiedenen Ansichten dargestellt. Der Vakuumpumpengehäusedeckel 1 ist als Umformteil, insbesondere als Stanzteil, ausgeführt und hat im Wesentlichen die Gestalt einer Kreisscheibe 3 mit einer konstanten Dicke. Eine Seite der Kreisscheibe 3 bildet eine ebene Anlagefläche 4, die dazu dient, den Vakuumpumpengehäusedeckel 1 an ein (nicht dargestelltes) Gehäuse einer Vakuumpumpe anzubauen. Zu diesem Zweck weist die Kreisscheibe 3 außen mehrere Augen 5 mit jeweils einem Durchgangsloch 6 auf. Die Durchgangslöcher 6 dienen zum Durchführen von Befestigungsmitteln, wie Befestigungsschrauben, mit denen der Vakuumpumpengehäusedeckei 1 an dem Gehäuse der Vakuumpumpe befestigbar ist.2 shows the view of a section along the line IUI in Figure 1. In Figures 1 and 2, a vacuum pump housing cover 1 is shown in various views. The vacuum pump housing cover 1 is designed as a formed part, in particular as a stamped part, and has substantially the shape of a circular disc 3 with a constant thickness. One side of the circular disc 3 forms a flat contact surface 4, which serves to grow the vacuum pump housing cover 1 to a (not shown) housing a vacuum pump. For this purpose, the circular disc 3 outside a plurality of eyes 5, each with a through hole 6. The through-holes 6 are used to perform fastening means, such as fastening screws, with which the vacuum pump housing lid 1 can be fastened to the housing of the vacuum pump.
Die Vakuumpumpe dient zum Beispiel dazu, ein Vakuum in einem Bremskraftverstärker eines Kraftfahrzeugs zu erzeugen. Dann wird der Bremskraftverstärker als Hauptverbraucher bezeichnet. Weitere Verbraucher, die ebenfalls an die Vakuumpumpe angeschlossen werden können, werden als Nebenverbraucher bezeichnet. Bei den Nebenverbrauchern kann es sich zum Beispiel um Steuerklappen einer Brennkraftmaschine handeln. Der Hauptverbraucher ist vorzugsweise an das Vakuumpumpengehäuse angeschlossen. Der Nebenverbraucher wird vorzugsweise so an den Vakuumpumpengehäusedeckel 1 angeschlossen, dass über das weitere Durchgangsloch 10 ein Vakuum an den Nebenverbraucher angelegt wird.The vacuum pump serves, for example, to generate a vacuum in a brake booster of a motor vehicle. Then the brake booster is referred to as the main consumer. Other consumers, which can also be connected to the vacuum pump, are referred to as secondary consumers. The auxiliary consumers may be, for example, control flaps of an internal combustion engine. The main consumer is preferably connected to the vacuum pump housing. The auxiliary consumer is preferably connected to the vacuum pump housing cover 1, that via the further through hole 10, a vacuum is applied to the secondary consumer.
Ein ebenfalls als Umformteil, insbesondere als Stanzteil, ausgeführtes Stutzengehäuseteil 14 ist an einer Außenseite 15 des Vakuumpumpengehäusedeckels 1 außerhalb des Durchgangslochs 10 stoffschlüssig mit dem Vakuumpumpengehäusedeckel 1 verbunden. Das Stutzengehäuseteil 14 hat im Wesentlichen die Gestalt eines geraden Kreiszylindermantels 16, dessen Zylinderachse senkrecht zu dem Vakuumpumpengehäusedeckel 1 angeordnet ist. Das Stutzengehäuseteil 14 weist an der dem Vakuumpumpengehäusedeckel 1 zugewandten Stirnseite des Kreiszylindermantels 16 einen nach außen abgewinkelten Umfangsrand 18 auf, der einen Befestigungsflansch darstellt, mit dem das Stutzengehäuseteil 14 an dem Vakuumpumpengehäusedeckel 1 befestigt ist.A socket housing part 14, which is likewise designed as a shaped part, in particular as a stamped part, is connected to the vacuum pump housing cover 1 on an outer side 15 of the vacuum pump housing cover 1 outside the through-hole 10 with a material fit. The neck housing part 14 essentially has the shape of a straight circular cylinder jacket 16, the cylinder axis of which is arranged perpendicular to the vacuum pump housing cover 1. The nozzle housing part 14 has, on the end face of the circular cylinder jacket 16 facing the vacuum pump housing cover 1, an outwardly angled peripheral edge 18, which forms a mounting flange with which the nozzle housing part 14 is fastened to the vacuum pump housing cover 1.
Die Befestigung des Umfangsrandes oder Befestigungsflanschs 18 erfolgt mit Hilfe von Vertiefungen 21 bis 24, die in dem abgewinkelten Umfangsrand 18 des Stutzengehäuseteils 14 vorgesehen sind und auf der dem Vakuumpumpengehäusedeckel 1 zugewandten Seite Erhöhungen oder Buckel bilden. Diese Buckel werden beim Buckelschweißen stoffschlüssig mit dem Vakuumpumpengehäusedeckel 1 verbunden. Das Stutzengehäuseteil 14 weist an der dem Vakuumpumpengehäusedeckel 1 abgewandten Stirnseite des Kreiszylindermantels 16 einen radial nach innen abgewinkelten Umfangsrand 26 auf, der ein zentrales Durchgangsloch 28 begrenzt. Durch das zentrale Durchgangsloch 28 hindurch erstreckt sich ein Anschlussstutzen 30 mit einem zentralen Durchgangsloch 31 , das sich durch einen Grundkörper 32 und einen Stutzenkörper 33 des Anschlussstutzens 30 hindurch erstreckt. Der Grundkörper 32 des Anschlussstutzens 30 wird außen von dem abgewinkelten Umfangsrand 26 des Stutzengehäuseteils 14 umgriffen.The attachment of the peripheral edge or mounting flange 18 by means of recesses 21 to 24, which are provided in the angled peripheral edge 18 of the nozzle housing part 14 and on the vacuum pump housing cover 1 side facing elevations or humps form. These humps are materially connected to the vacuum pump housing cover 1 during projection welding. The nozzle housing part 14 has on the end face of the circular cylinder jacket 16 facing away from the vacuum pump housing cover 1 a radially inwardly angled peripheral edge 26 which delimits a central through hole 28. Through the central through hole 28, a connecting piece 30 extends with a central through hole 31, which extends through a base body 32 and a nozzle body 33 of the connecting piece 30 therethrough. The main body 32 of the connection piece 30 is encompassed on the outside by the angled peripheral edge 26 of the socket housing part 14.
In einem Zwischenraum zwischen dem Grundkörper 32 des Anschlussstutzens 30 und dem Durchgangsloch 10 in dem Vakuumpumpengehäusedeckel 1 ist in dem Stutzengehäuseteil 14 eine Rückschlagventileinrichtung 36 angeordnet. Die Rückschlagventileinrichtung 36 umfasst einen Schließkörper 38 und einen Anschlagkörper 40, der (nicht dargestellte) Durchgangskanäle aufweist, die in Abhängigkeit von der Stellung des Schließkörpers 38 eine Fluidverbin- dung zwischen dem Durchgangsloch 31 des Anschlussstutzens 30 und dem Durchgangsloch 10 des Vakuumpumpengehäusedeckels 1 ermöglichen. Der Schließkörper 38 verhindert, dass Luft aus dem Inneren einer an die Anlagefläche 4 angebauten Vakuumpumpe durch das Durchgangsloch 31 des Anschlussstutzens 30 austritt. In umgekehrter Richtung ermöglicht der vorzugsweise schirmartige Schließkörper 38 ein Ansaugen von Luft durch das Durchgangsloch 31 in das Innere der Vakuumpumpe, um ein Vakuum an den Nebenverbraucher anzulegen.In a space between the base body 32 of the connecting piece 30 and the through hole 10 in the vacuum pump housing cover 1, a check valve device 36 is disposed in the nozzle housing part 14. The non-return valve device 36 comprises a closing body 38 and a stop body 40, which has passage channels (not shown) which allow fluid communication between the through-hole 31 of the connecting piece 30 and the through-hole 10 of the vacuum pump housing cover 1, depending on the position of the closing body 38. The closing body 38 prevents air from escaping from the interior of a vacuum pump mounted on the contact surface 4 through the through-hole 31 of the connecting piece 30. In the reverse direction, the preferably umbrella-like closing body 38 allows air to be drawn through the through-hole 31 into the interior of the vacuum pump in order to apply a vacuum to the secondary consumer.
An einer Schnittstelle zwischen der Rückschlagventileinrichtung 36, dem Vakuumpumpengehäusedeckel 1 und dem Stutzengehäuseteil 14 ist ein O-Ring 41 zu Dichtzwecken angeordnet. Ein weiterer O-Ring 42 ist zu Dichtzwecken an einer Schnittsteile zwischen der Rückschlagventileinrichtung 36, dem Grundkörper 32 des Anschlussstutzens 30 und dem Kreiszylindermantel 16 des Stutzengehäuseteils 14 angeordnet. Die O-Ringe 41, 42 verhindern ein unerwünschtes Eintreten oder Austreten von Luft in den beziehungsweise aus dem Stutzengehäuseteil 14.At an interface between the check valve device 36, the vacuum pump housing cover 1 and the nozzle housing part 14, an O-ring 41 is arranged for sealing purposes. Another O-ring 42 is arranged for sealing purposes on an interface between the check valve device 36, the base body 32 of the connecting piece 30 and the circular cylinder jacket 16 of the nozzle housing part 14. The O-rings 41, 42 prevent undesired entry or exit of air into or out of the socket housing part 14.
Gemäß einem weiteren Aspekt der Erfindung werden die beiden O-Ringe 41 , 42 dazu verwendet, den Anschlagkörper 40, die Rückschlagventileinrichtung 36 und den Grundkörper 32 des Anschlussstutzens 30 zwischen dem Vakuumpumpengehäusedeckel 1 und dem nach innen abgewinkelten Umfangsrand 26 des Stutzengehäuseteils 14 zu verspannen. Vor dem Verschweißen des nach außen abgewinkelten Umfangsrands 18 des Stutzengehäuseteils 14 mit dem Vakuumpumpengehäusedeckel 1 wird zunächst der Grundkörper 32 des Anschluss- stutzens 30 so in das Stutzengehäuseteil 14 eingelegt, dass der Stutzenkörper 33 durch das zentrale Durchgangsloch 28 aus dem Stutzengehäuseteil 14 herausragt. Anschließend wird der O-Ring 42 eingelegt. Daraufhin wird die Rückschlagventileinrichtung 36 mit dem Schließkörper 38 eingelegt. Zuletzt wird der Anschlagkörper 40 mit dem O-Ring 41 eingelegt. Die so vormontierte Montageeinheit oder Baueinheit wird dann durch Schweißen, insbesondere Buckelschweißen, an dem Vakuumpumpengehäusedeckel 1 befestigt. Dabei werden die in dem Stutzengehäuseteil 14 angeordneten Bauteile durch Komprimieren der O-Ringe 41 , 42 gegeneinander und zwischen dem Vakuumpumpengehäusedeckel 1 und dem nach innen abgewinkelten Umfangsrand 26 des Stutzengehäuseteils 14 verspannt. According to a further aspect of the invention, the two O-rings 41, 42 used to brace the stopper body 40, the check valve 36 and the body 32 of the connecting piece 30 between the vacuum pump housing cover 1 and the inwardly angled peripheral edge 26 of the nozzle housing part 14. Prior to welding the outwardly angled peripheral edge 18 of the nozzle housing part 14 with the vacuum pump housing cover 1, the main body 32 of the connection socket 30 so inserted into the socket housing part 14, that the nozzle body 33 protrudes through the central through hole 28 from the nozzle housing part 14. Subsequently, the O-ring 42 is inserted. Then, the check valve device 36 is inserted with the closing body 38. Finally, the stopper body 40 is inserted with the O-ring 41. The pre-assembled mounting unit or unit is then attached to the vacuum pump housing cover 1 by welding, in particular projection welding. In this case, arranged in the nozzle housing part 14 components by compressing the O-rings 41, 42 against each other and between the vacuum pump housing cover 1 and the inwardly angled peripheral edge 26 of the nozzle housing part 14 braced.
BezuqszeichenlisteLIST OF REFERENCES

Claims

Patentansprüche claims
Vakuumpumpengehäusedeckel mit einer ebenen Anlagefläche (4) zum Anbauen des Vakuumpumpengehäusedeckels (1), dadurch gekennzeichnet, dass der Vakuumpumpengehäusedeckel (1) als Umformteil aus Stahl mit einem Durchgangsloch (10) ausgeführt ist, das auf der der ebenen Anlagefläche (4) abgewandten Seite des Vakuumpumpengehäusedeckels (1) von einem Stutzengehäuseteil (14) umgeben ist, das ebenfalls als Umformteil aus Stahl ausgeführt und stoffschlüssig mit dem Vakuumpumpengehäusedeckel (1) verbunden ist.Vacuum pump housing cover with a flat bearing surface (4) for mounting the vacuum pump housing cover (1), characterized in that the vacuum pump housing cover (1) is designed as a steel forming part with a through hole (10) which faces away from the plane bearing surface (4) Vacuum pump housing cover (1) by a nozzle housing part (14) is surrounded, which is also designed as a forming part made of steel and materially connected to the vacuum pump housing cover (1).
Vakuumpumpengehäusedeckel nach Anspruch 1 , dadurch gekennzeichnet, dass die ebene Anlagefläche (4) eine Ebenheit von etwa fünf Hundertstel Millimeter aufweist.Vacuum pump housing cover according to claim 1, characterized in that the planar contact surface (4) has a flatness of about five hundredths of a millimeter.
Vakuumpumpengehäusedecke) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Stutzengehäuseteil (14) durch eine Schweißverbindung, insbesondere eine Buckelschweißverbindung, mit dem Vakuumpumpengehäusedeckel (1) verbunden ist.Vacuum pump housing cover) according to any one of the preceding claims, characterized in that the nozzle housing part (14) by a welded joint, in particular a projection welding connection, with the vacuum pump housing cover (1) is connected.
Vakuumpumpengehäusedeckel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in dem Stutzengehäuseteil (14) ein Anschlussstutzen (30) teilweise aufgenommen ist, der sich durch eine Öffnung (28) des Stützengehäuseteils (14) hindurch nach außen erstreckt.Vacuum pump housing cover according to one of the preceding claims, characterized in that in the neck housing part (14) a connecting piece (30) is partially received, which extends through an opening (28) of the support housing part (14) outwardly.
Vakuumpumpengehäusedeckel nach Anspruch 4, dadurch gekennzeichnet, dass das Stutzengehäuseteil (14) im Wesentlichen die Gestalt eines geraden Kreiszylindermantels (16) mit einem Umfangsrand (18) aufweist, der zur Ausbildung eines Befestigungsflansches nach außen abgewinkelt ist.Vacuum pump housing cover according to claim 4, characterized in that the nozzle housing part (14) substantially in the form of a straight circular cylinder jacket (16) having a peripheral edge (18), which is angled to form a mounting flange to the outside.
Vakuumpumpengehäusedeckel nach Anspruch 5, dadurch gekennzeichnet, dass das Stutzengehäuseteil (14) einen weiteren Umfangsrand (26) aufweist, der nach innen abgewinkelt ist, um den Anschlussstutzen (30) in dem Stutzengehäuseteil (14) zu halten.Vacuum pump housing cover according to claim 5, characterized in that the nozzle housing part (14) has a further peripheral edge (26) which is angled inwardly to hold the connecting piece (30) in the nozzle housing part (14).
Vakuumpumpengehäusedeckel nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass der Anschlussstutzen (30) einen Grundkörper (32) umfasst, der in dem Stutzengehäuseteil (14) angeordnet ist und von dem sich ein Stutzenkörper (33) durch die Öffnung (28) des Stutzengehäuseteils (14) hindurch nach außen erstreckt. Vakuumpumpengehäusedeckel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in dem Stutzengehäuseteil (14) eine Rückschlagventileinrichtung (36) aufgenommen ist.Vacuum pump housing cover according to one of claims 4 to 6, characterized in that the connecting piece (30) comprises a base body (32) which is arranged in the nozzle housing part (14) and from which a nozzle body (33) through the opening (28) of the Stutzengehäuseteils (14) extends through the outside. Vacuum pump housing cover according to one of the preceding claims, characterized in that a check valve device (36) is accommodated in the socket housing part (14).
Vakuumpumpengehäusedeckel nach Anspruch 8, dadurch gekennzeichnet, dass die Rückschlagventileinrichtung (36) zwischen einem beziehungsweise dem Anschlussstutzen (30), insbesondere einem beziehungsweise dem Grundkörper (32) des Anschlussstutzens (30), und dem Vakuumpumpengehäusedeckel (1) angeordnet, insbesondere eingespannt, ist.Vacuum pump housing cover according to claim 8, characterized in that the non-return valve device (36) between one or the connecting piece (30), in particular one or the main body (32) of the connecting piece (30), and the vacuum pump housing cover (1) arranged, in particular clamped.
Vakuumpumpengehäusedeckel nach Anspruch 9, dadurch gekennzeichnet, dass die Rückschlagventileinrichtung (36) einen Schließkörper (38) umfasst, der gegen einen Anschlagkörper (40) bewegbar ist.Vacuum pump housing cover according to claim 9, characterized in that the non-return valve device (36) comprises a closing body (38) which is movable against a stop body (40).
Vakuumpumpengehäusedeckel nach Anspruch 10, dadurch gekennzeichnet, dass zwischen der Rückschlagventileinrichtung (36) und dem Anschlussstutzen (30), insbesondere dem Grundkörper (32) des Anschlussstutzens (30), ein O-Ring (42) angeordnet ist, der dazu dient, die Schnittstelle zwischen dem Anschlussstutzen (30), insbesondere dem Grundkörper (32) des Anschlussstutzens (30), und dem Stutzengehäuseteil (14) abzudichten und/oder eine Vorspannkraft auf den Anschlussstutzen (30), insbesondere den Grundkörper (32) des Anschlussstutzens (30), beziehungsweise die Rückschlagventileinrichtung (36) aufzubringen.Vacuum pump housing cover according to claim 10, characterized in that between the check valve device (36) and the connecting piece (30), in particular the base body (32) of the connecting piece (30), an O-ring (42) is arranged, which serves to the interface seal between the connecting piece (30), in particular the main body (32) of the connecting piece (30), and the socket housing part (14) and / or a biasing force on the connecting piece (30), in particular the main body (32) of the connecting piece (30), or apply the check valve device (36).
Vakuumpumpengehäusedeckel nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass zwischen dem Anschlagkörper (40) beziehungsweise der Rückschlagventileinrichtung (36) und dem Vakuumpumpengehäusedeckel (1) ein O-Ring (41) angeordnet ist, der dazu dient, die Schnittstelle zwischen dem Anschlagkörper (40) beziehungsweise der Rückschlagventileinrichtung (36) und dem Vakuumpumpengehäusedeckel (1) abzudichten und/oder eine Vorspannkraft auf den Anschlagkörper (40) beziehungsweise die Rückschlagventileinrichtung (36) aufzubringen.Vacuum pump housing cover according to claim 10 or 11, characterized in that between the stop body (40) and the check valve means (36) and the Vakuumpumpengehäusedeckel (1) an O-ring (41) is arranged, which serves the interface between the stop body (40 ) or the check valve device (36) and the vacuum pump housing cover (1) and / or apply a biasing force to the stop body (40) or the check valve device (36).
Vakuumpumpengehäusedeckel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zur Abdichtung der Schnittstelle zwischen dem Stutzengehäuseteil (14) und dem Vakuumpumpengehäusedeckel (1) und/oder zum Verspannen von in dem Stutzengehäuseteil angeordneten Bauteilen mindestens ein O-Ring (41 ,42) vorgesehen ist. Vakuumpumpengehäusedeckel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die beiden Umformteile (1,14) als fertigfallende Stanzteile ausgeführt sind.Vacuum pump housing cover according to one of the preceding claims, characterized in that at least one O-ring (41, 42) is provided for sealing the interface between the neck housing part (14) and the vacuum pump housing cover (1) and / or for bracing arranged in the neck housing part components , Vacuum pump housing cover according to one of the preceding claims, characterized in that the two forming parts (1, 14) are designed as finished punched parts.
Verfahren zum Herstellen eines Vakuumpumpengehäusedeckels nach einem der vorhergehenden Ansprüche, mit folgenden Schritten:Method for producing a vacuum pump housing cover according to one of the preceding claims, comprising the following steps:
- der Vakuumpumpengehäusedeckel (1) und das Stutzengehäuseteil (14) werden durch Stanzen aus einem Blechmaterial gebildet;- The vacuum pump housing cover (1) and the nozzle housing part (14) are formed by stamping from a sheet material;
- das Stutzengehäuseteil (14) wird durch Schweißen, insbesondere durch Buckelschweißen, stoffschlüssig mit dem Vakuumpumpengehäusedeckel (1) verbunden.- The nozzle housing part (14) by welding, in particular by projection welding, materially connected to the vacuum pump housing cover (1).
Verfahren nach Anspruch 15, dadurch gekennzeichnet, dass vor dem Verschweißen des Stutzengehäuseteils (14) mit dem Vakuumpumpengehäusedeckel (1) ein beziehungsweise der Grundkörper (32) eines beziehungsweise des Anschlussstutzens (30), eine beziehungsweise die Rückschlagventileinrichtung (36), ein beziehungsweise der Schließkörper (38), ein beziehungsweise der Anschlagkörper (40) und/oder ein beziehungsweise der O-Ring (41,42) beziehungsweise die O-Ringe (41,42) in das Stutzengehäuseteil (14) eingelegt werden beziehungsweise wird. A method according to claim 15, characterized in that prior to the welding of the neck housing part (14) with the vacuum pump housing cover (1) one or the main body (32) of one or the connecting piece (30), one or the non-return valve device (36), one or the closing body (38), one or the stopper body (40) and / or one or the O-ring (41,42) or the O-rings (41,42) are inserted in the nozzle housing part (14) or is.
EP10707200.1A 2009-02-02 2010-01-19 Vacuum pump housing cover Not-in-force EP2391828B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009007081 2009-02-02
PCT/DE2010/000046 WO2010085935A2 (en) 2009-02-02 2010-01-19 Vacuum pump housing cover

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EP2391828A2 true EP2391828A2 (en) 2011-12-07
EP2391828B1 EP2391828B1 (en) 2013-10-02

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EP (1) EP2391828B1 (en)
DE (1) DE112010000237A5 (en)
WO (1) WO2010085935A2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012017321A1 (en) * 2012-09-03 2014-03-06 Klaus Union Gmbh & Co. Kg Double-shell containment shell
DE102014224197A1 (en) 2014-11-26 2016-06-02 Magna Powertrain Bad Homburg GmbH Vacuum pump housing assembly and method of making the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003071135A1 (en) * 2002-02-18 2003-08-28 Luk Automobiltechnik Gmbh & Co. Kg Vacuum pump comprising a single-part connecting branch and housing element
DE502004012345D1 (en) 2003-01-17 2011-05-12 Ixetic Hueckeswagen Gmbh PUMP

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010085935A2 *

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WO2010085935A3 (en) 2012-01-26
DE112010000237A5 (en) 2012-07-05
EP2391828B1 (en) 2013-10-02
WO2010085935A2 (en) 2010-08-05
WO2010085935A9 (en) 2011-08-11

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