EP3032105B1 - Mechanical motor vehicle vacuum pump - Google Patents

Mechanical motor vehicle vacuum pump Download PDF

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Publication number
EP3032105B1
EP3032105B1 EP14197706.6A EP14197706A EP3032105B1 EP 3032105 B1 EP3032105 B1 EP 3032105B1 EP 14197706 A EP14197706 A EP 14197706A EP 3032105 B1 EP3032105 B1 EP 3032105B1
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EP
European Patent Office
Prior art keywords
pump
lubricant
plug
pump rotor
rotor
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.)
Active
Application number
EP14197706.6A
Other languages
German (de)
French (fr)
Other versions
EP3032105A1 (en
Inventor
Alexander Graulich
Karl-Heinz Kirberg
Klaus Vosmerbäumer
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.)
Pierburg Pump Technology GmbH
Original Assignee
Pierburg Pump Technology 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 Pierburg Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Priority to EP14197706.6A priority Critical patent/EP3032105B1/en
Priority to PCT/EP2015/079064 priority patent/WO2016091922A1/en
Priority to JP2017516707A priority patent/JP6317527B2/en
Priority to US15/534,004 priority patent/US10443599B2/en
Priority to CN201580056729.3A priority patent/CN107002682B/en
Publication of EP3032105A1 publication Critical patent/EP3032105A1/en
Application granted granted Critical
Publication of EP3032105B1 publication Critical patent/EP3032105B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/025—Lubrication; Lubricant separation using a lubricant pump
    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • 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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • 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
    • F04C29/02—Lubrication; Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus

Definitions

  • the invention relates to a mechanical motor vehicle vacuum pump which can be coupled non-rotatably via a plug-in coupling element on the pump side with a corresponding plug-in coupling element of a motor vehicle internal combustion engine and which is lubricated by lubricant supplied on the pump side.
  • the plug-in coupling arrangement consists of plug-in coupling elements which are designed to be complementary to one another and which have one or more claws which engage in corresponding recesses in the respective other plug-in coupling element.
  • the plug-in coupling arrangement is equipped with radial and axial play, so that friction occurs in the area of the plug-in coupling arrangement, which makes lubrication necessary.
  • EP 2 559 903 A1 describes a mechanical motor vehicle vacuum pump with a lubricant supply for the lubrication of a separate plug-in coupling element.
  • a blind hole in the pump rotor has a partially enlarged diameter so that the lubricant can flow in the axial direction to the separate plug-in coupling element through an annular channel surrounding a retaining bolt.
  • a mechanical motor vehicle vacuum pump which has a lubricant supply in which the liquid lubricant is transferred through a stationary lubricant supply channel in the pump housing into a rotating lubricant transport channel in the pump rotor through which the lubricant is fed a hollow cylindrical centrally arranged retaining bolt through which the lubricant is guided axially into the center of the plug-in coupling arrangement between the two plug-in coupling elements.
  • This construction is relatively complex and the retaining bolt exposed to high mechanical loads is mechanically weakened by the axial bore.
  • the lubricant must be pumped into the axial center of the rotating pump rotor, so that considerable centrifugal forces that act on the lubricant must be overcome, particularly at high speeds.
  • the object of the invention is to create a mechanical motor vehicle vacuum pump with a simply constructed lubricant supply.
  • the mechanical motor vehicle vacuum pump has a pump rotor rotatably mounted in a stationary pump housing and a separate plug-in coupling element on the rotor side.
  • the plug-in coupling element on the pump side is non-rotatably connected to the pump rotor with axial and radial play.
  • a stationary lubricant supply channel is arranged in the pump housing, through which the lubricant is pumped from a lubricant inlet on the pump housing in the direction of the plug-in coupling element to a transfer opening in the pump housing.
  • a lubricant transport channel is provided in the pump rotor, the lubricant being guided from a transfer opening through the transport channel to a lubricant outlet opening.
  • the transfer opening on the housing side and the transfer opening on the rotor side are spatially arranged relative to one another in such a way that the two openings are temporarily fluidly connected to one another at least once during a full rotor revolution of the pump rotor. This creates an intermittent flow of lubricant or an intermittent one Lubricant transfer realized.
  • the transfer opening can also be designed as a circular ring channel on the pump rotor, so that there is a constant fluidic connection between the supply channel and the transport channel.
  • the lubricant outlet opening is arranged eccentrically in an end wall of the pump rotor, specifically in the end wall which faces the plug-in coupling element on the pump side.
  • An eccentrically arranged outlet opening is to be understood as an outlet opening which is not arranged in the axial center of the pump rotor, so that the lubricant transport to the distal side of the pump-side plug-in coupling element does not essentially take place in the axial center.
  • the lubricant exiting through the outlet opening is conveyed to the outside by centrifugal forces, so that the lubricant flows through an annular gap between the plug-in coupling element and the pump rotor to the distal side of the plug-in coupling element on the pump side. In this way, lubrication of the entire coupling arrangement including the plug-in coupling element on the motor side is implemented in a structurally simple manner.
  • the plug-in coupling element on the pump side is held on the pump rotor by a central retaining bolt, the retaining bolt being fixed in a blind hole in the pump rotor.
  • the blind hole has no direct fluidic connection to the transport channel, so there is no flow of lubricant through it.
  • the eccentricity of the outlet opening is preferably greater than half the radius of the plug-in coupling end wall or the plug-in coupling element. The farther radially outward the outlet opening is, the lower are the pressure losses that result, in particular at high speeds, due to the centrifugal force that occurs radially inward counteracts flowing lubricant radially outward. This ensures a sufficient supply of lubricant to the entire clutch assembly, especially at high speeds.
  • the pump rotor end wall, in which the lubricant outlet opening is arranged, and the opposite plug-in coupling end wall are preferably located in a common transverse plane. Both end walls do not have any channels or grooves with a radially inwardly directed component.
  • the transfer opening on the housing side and the transfer opening on the rotor side lie in a common cylinder surface.
  • the retaining bolt preferably does not have any open or closed channels having an axial component.
  • the retaining bolt serves exclusively to hold the pump-side plug-in coupling element mechanically on the pump rotor, the plug-in coupling element being movable with a certain amount of play in relation to the pump rotor both in the radial and in the axial direction.
  • a vacuum pump arrangement is shown schematically, which consists essentially of a mechanical motor vehicle vacuum pump 10, an internal combustion engine 52 and one of the Internal combustion engine 52 associated lubricant pump 54 consists.
  • the vacuum pump 10 is mechanically rotationally coupled to a crankshaft or a drive shaft of the internal combustion engine 52 via a plug-in coupling arrangement 68.
  • the vacuum pump 10 is used, for example, to provide actuator vacuum for various auxiliary units of the motor vehicle, for example for a pneumatic brake booster.
  • the lubricant pump 54 conveys the liquid lubricant for the lubricant supply to the internal combustion engine 52 and the lubricant supply to the vacuum pump 10.
  • the vacuum pump 10 is a so-called vane pump and has a pump housing 14 which is essentially formed by a solid housing body 13 and a housing cover 19.
  • a pump rotor 16 that is rotatably mounted about a longitudinal axis is arranged in the pump housing 14.
  • the pump rotor sliding bearing is formed by a hollow cylinder surface 71 on the housing side and a corresponding outer cylinder surface 72 on the rotor side.
  • the pump rotor 16 has a rotor body 17 with a radial vane slot 21 in which a rotor vane 18 is mounted so as to be radially displaceable.
  • the rotor blade 18 rotates in a pump chamber 12 defined by the pump housing 14 and in this way conveys air from a pump inlet (not shown) to a pump outlet (not shown).
  • the plug-in coupling arrangement 68 is formed by two plug-in coupling elements 20, 50 which interlock in a rotationally fixed manner, but allow an axial and radial movement of the two plug-in coupling elements 20, 50 with respect to one another.
  • the pump-side plug-in coupling element 20 is in turn held in a rotationally fixed manner by the pump rotor 16 via a complex form-fitting structure 60.
  • the form-fit structure 60 also allows axial and radial mobility of the pump-side plug-in coupling element 20 in relation to the pump rotor 16.
  • the plug-in coupling element 20 on the pump side has a continuous central bore 74 through which a retaining bolt 70 is inserted, which is firmly fixed with a press fit in a central blind hole 42 of the pump rotor 16.
  • the central bore 74 has an inner diameter which is slightly larger than the outer diameter of the retaining bolt 70, so that a certain radial mobility of the plug-in coupling element 20 with respect to the pump rotor 16 is permitted.
  • the length of the socket pin shaft section, which protrudes axially from the blind hole 42, is slightly greater than the length of the axial central bore 74, so that a certain axial mobility of the plug-in coupling element 20 with respect to the pump rotor 16 is guaranteed.
  • the pump rotor 16 has a hollow cross-like interlocking structure 60, which in the Figure 1 is only shown schematically and the Figures 3 and 4th can be found in more detail.
  • the form-fit structure 60 has a bottom wall 34 lying in a transverse plane and is surrounded by a side wall 40 which defines the hollow cross-like form-fit structure 60.
  • the plug-in coupling element 20 On its side facing the pump rotor 16, the plug-in coupling element 20 has a cross-like form-fitting structure that is approximately complementary to the hollow cross-like form-fit structure, which creates a rotationally fixed coupling of the plug-in coupling element 20 to the pump rotor 16.
  • the plug-in coupling element 20 has an end wall 36, which likewise lies in a transverse plane and adjoins the bottom wall 34 on the pump rotor side in parallel.
  • a radial gap is provided between the form-fit structure side wall 40 and the peripheral wall 38 of the plug-in coupling element 20, through which a certain radial mobility of the plug-in coupling element 20 in relation to the pump rotor 16 is permitted.
  • the plug-in coupling element 20 has a plurality of axial claws 44 on its distal side, which mesh with corresponding claws of the plug-in coupling element 50 on the motor side.
  • the pump housing 14 or the housing body 13 has a lubricant supply channel 22 through which the liquid lubricant coming under pressure from the lubricant pump 54 via a line 56 from the lubricant pump 54 is passed from a lubricant inlet 24 on the housing side to a transfer opening 26 which is in the hollow cylinder surface 71 of the rotor sliding bearing is located.
  • the pump rotor 16 has a lubricant transport channel 30 through which the lubricant is guided from a transfer opening 28 to a lubricant outlet opening 32.
  • the transfer opening 28 lies in the plain bearing outer cylinder surface 72 and is arranged such that the transfer opening 28 is aligned with the transfer opening 26 once during each full revolution of the pump rotor 16, so that an intermittent flow of lubricant is realized in this way.
  • the lubricant outlet opening 32 lies in the bottom wall 34 of the form-fitting structure 60, the end wall 36 of the plug-in coupling element 20 covering the outlet opening 32, but being kept at a small axial distance by the fluid pressure of the exiting lubricant.
  • the outlet opening 32 is arranged eccentrically to the axis of rotation of the pump rotor 16.
  • the eccentricity E of the lubricant outlet opening 32 is more than 3/4 of the radius R of the plug-in coupling end wall 36.
  • the transport channel 30 is formed at right angles in the housing body 13.
  • the transport channel 30 ' which opens into the lubricant outlet opening 32', is oblique and straight. In this embodiment, the production of the transport channel 30 is simplified, since only a single drilling process is required for its production.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)

Description

Die Erfindung bezieht sich auf eine mechanische Kfz-Vakuumpumpe, die über ein pumpenseitiges Steckkupplungs- Element mit einem korrespondierenden Steckkupplungs- Element eines Kfz-Verbrennungsmotors drehfest kuppelbar ausgebildet ist und die durch pumpenseitig zugeführtes Schmiermittel geschmiert wird.The invention relates to a mechanical motor vehicle vacuum pump which can be coupled non-rotatably via a plug-in coupling element on the pump side with a corresponding plug-in coupling element of a motor vehicle internal combustion engine and which is lubricated by lubricant supplied on the pump side.

Mechanische Vakuumpumpen werden in der Regel über eine Steckkupplungs- Anordnung mit der Kurbelwelle oder der Antriebswelle des Verbrennungsmotors drehfest gekoppelt. Die Steckkupplungs-Anordnung besteht aus komplementär zueinander ausgebildeten Steckkupplungs- Elementen, die eine oder mehrere Klauen aufweisen, die in entsprechende Ausnehmungen des jeweils anderen Steckkupplungs-Elementes eingreifen. Zur Erleichterung der Montage und zur mechanischen Entkopplung des Pumpenrotors von der betreffenden Welle ist die Steckkupplungs- Anordnung mit radialem und axialem Spiel ausgestattet, so dass im Bereich der Steckkupplungs-Anordnung Reibung auftritt, die eine Schmierung erforderlich macht.Mechanical vacuum pumps are usually coupled to the crankshaft or the drive shaft of the internal combustion engine in a rotationally fixed manner via a plug-in coupling arrangement. The plug-in coupling arrangement consists of plug-in coupling elements which are designed to be complementary to one another and which have one or more claws which engage in corresponding recesses in the respective other plug-in coupling element. To facilitate assembly and to mechanically decouple the pump rotor from the shaft in question, the plug-in coupling arrangement is equipped with radial and axial play, so that friction occurs in the area of the plug-in coupling arrangement, which makes lubrication necessary.

EP 2 559 903 A1 beschreibt eine mechanische Kfz-Vakuumpumpe mit einer Schmiermittelversorgung für die Schmierung eines separaten Steckkupplungs-Elementes. Hierzu weist eine Sackbohrung in dem Pumpenrotor einen teilweise erweiterten Durchmesser auf, so dass das Schmiermittel durch einen einen Haltebolzen umgebenden Ringkanal in axialer Richtung zu dem separaten Steckkupplungs-Element fließen kann. EP 2 559 903 A1 describes a mechanical motor vehicle vacuum pump with a lubricant supply for the lubrication of a separate plug-in coupling element. For this purpose, a blind hole in the pump rotor has a partially enlarged diameter so that the lubricant can flow in the axial direction to the separate plug-in coupling element through an annular channel surrounding a retaining bolt.

Aus WO 2014/063681 A1 ist eine mechanische Kfz-Vakuumpumpe bekannt, die eine Schmiermittelversorgung aufweist, bei der durch einen stationären Schmiermittel-Versorgungskanal in dem Pumpengehäuse das flüssige Schmiermittel in einen rotierenden Schmiermittel-Transportkanal in dem Pumpenrotor übergeben wird, durch den das Schmiermittel zu einem hohlzylindrischen zentrisch angeordneten Haltebolzen geleitet wird, durch den das Schmiermittel axial ins Zentrum der Steckkupplungs-Anordnung zwischen die beiden Steckkupplungs-Elemente geleitet wird. Diese Konstruktion ist verhältnismäßig aufwendig und der hohen mechanischen Belastungen ausgesetzte Haltebolzen wird durch die Axialbohrung mechanisch geschwächt. Ferner muss das Schmiermittel in das axiale Zentrum des rotierenden Pumpenrotors gepumpt werden, so dass insbesondere bei hohen Drehzahl en erhebliche Fliehkräfte, die auf das Schmiermittel wirken, überwunden werden müssen.Out WO 2014/063681 A1 A mechanical motor vehicle vacuum pump is known which has a lubricant supply in which the liquid lubricant is transferred through a stationary lubricant supply channel in the pump housing into a rotating lubricant transport channel in the pump rotor through which the lubricant is fed a hollow cylindrical centrally arranged retaining bolt through which the lubricant is guided axially into the center of the plug-in coupling arrangement between the two plug-in coupling elements. This construction is relatively complex and the retaining bolt exposed to high mechanical loads is mechanically weakened by the axial bore. Furthermore, the lubricant must be pumped into the axial center of the rotating pump rotor, so that considerable centrifugal forces that act on the lubricant must be overcome, particularly at high speeds.

Aufgabe der Erfindung ist es demgegenüber, eine mechanische Kfz-Vakuumpumpe mit einer einfach konstruierten Schmiermittelversorgung zu schaffen.In contrast, the object of the invention is to create a mechanical motor vehicle vacuum pump with a simply constructed lubricant supply.

Diese Aufgabe wird erfindungsgemäß gelöst mit einer mechanischen Kfz-Vakuumpumpe mit den Merkmalen des Anspruchs 1.This object is achieved according to the invention with a mechanical motor vehicle vacuum pump having the features of claim 1.

Die erfindungsgemäße mechanische Kfz-Vakuumpumpe weist einen in einem stationären Pumpengehäuse drehbar gelagerten Pumpenrotor und ein separates rotorseitiges Steckkupplungs-Element auf. Das pumpenseitige Steckkupplungs-Element ist drehfest jedoch mit axialem und radialem Spiel mit dem Pumpenrotor verbunden. In dem Pumpengehäuse ist ein stationärer Schmiermittel-Versorgungskanal angeordnet, durch den das Schmiermittel von einem Schmiermittel-Einlass an dem Pumpengehäuse in Richtung Steckkupplungs-Element zu einer Übergabeöffnung des Pumpengehäuses gepumpt wird.The mechanical motor vehicle vacuum pump according to the invention has a pump rotor rotatably mounted in a stationary pump housing and a separate plug-in coupling element on the rotor side. The plug-in coupling element on the pump side is non-rotatably connected to the pump rotor with axial and radial play. A stationary lubricant supply channel is arranged in the pump housing, through which the lubricant is pumped from a lubricant inlet on the pump housing in the direction of the plug-in coupling element to a transfer opening in the pump housing.

In dem Pumpenrotor ist ein Schmiermittel-Transportkanal vorgesehen, wobei das Schmiermittel von einer Übernahmeöffnung durch den Transportkanal zu einer Schmiermittel-Auslassöffnung geleitet wird. Die gehäuseseitige Übergabeöffnung und die rotorseitige Übernahmeöffnung sind räumlich derart zueinander angeordnet, dass die beiden Öffnungen während einer vollen Rotorumdrehung des Pumpenrotors mindestens einmal vorübergehend fluidisch miteinander verbunden sind. Hierdurch wird ein intermittierender Schmiermittel-Fluss bzw. eine intermittierender Schmiermittel-Übergabe realisiert. Alternativ kann die Übergabeöffnung auch als ein zirkulärer Ringkanal an dem Pumpenrotor ausgebildet sein, so dass eine ständige fluidische Verbindung zwischen dem Versorgungskanal und dem Transportkanal besteht.A lubricant transport channel is provided in the pump rotor, the lubricant being guided from a transfer opening through the transport channel to a lubricant outlet opening. The transfer opening on the housing side and the transfer opening on the rotor side are spatially arranged relative to one another in such a way that the two openings are temporarily fluidly connected to one another at least once during a full rotor revolution of the pump rotor. This creates an intermittent flow of lubricant or an intermittent one Lubricant transfer realized. Alternatively, the transfer opening can also be designed as a circular ring channel on the pump rotor, so that there is a constant fluidic connection between the supply channel and the transport channel.

Die Schmiermittel-Auslassöffnung ist exzentrisch in einer Stirnwand des Pumpenrotors angeordnet, und zwar in der Stirnwand, die dem pumpenseitigen Steckkupplungs-Element zugewandt ist. Unter einer exzentrisch angeordneten Auslassöffnung ist eine Auslassöffnung zu verstehen, die nicht im axialen Zentrum des Pumpenrotors angeordnet ist, so dass der Schmiermittel-Transport zur distalen Seite des pumpenseitigen Steckkupplungs-Elements im Wesentlichen nicht im axialen Zentrum erfolgt. Das durch die Auslassöffnung austretende Schmiermittel wird durch Fliehkräfte nach außen gefördert, so dass das Schmiermittel über einen Ringspalt zwischen dem Steckkupplungs-Element und dem Pumpenrotor zur distalen Seite des pumpenseitigen Steckkupplungs-Elements fließt. Auf diese Weise wird auf konstruktiv einfache Weise eine Schmierung der gesamten Kupplungsanordnung einschließlich des motorseitigen Steckkupplungs-Elementes realisiert.The lubricant outlet opening is arranged eccentrically in an end wall of the pump rotor, specifically in the end wall which faces the plug-in coupling element on the pump side. An eccentrically arranged outlet opening is to be understood as an outlet opening which is not arranged in the axial center of the pump rotor, so that the lubricant transport to the distal side of the pump-side plug-in coupling element does not essentially take place in the axial center. The lubricant exiting through the outlet opening is conveyed to the outside by centrifugal forces, so that the lubricant flows through an annular gap between the plug-in coupling element and the pump rotor to the distal side of the plug-in coupling element on the pump side. In this way, lubrication of the entire coupling arrangement including the plug-in coupling element on the motor side is implemented in a structurally simple manner.

Weder in der Pumpenrotor-Stirnwand noch in der gegenüberliegenden Stirnwand des Steckkupplungs-Elements ist radial zwischen der Auslassöffnung und dem Pumpenrotor-Zentrum ein Fluidkanal vorhanden.Neither in the pump rotor end wall nor in the opposite end wall of the plug-in coupling element is there a fluid channel radially between the outlet opening and the pump rotor center.

Das pumpenseitige Steckkupplungs-Element ist durch einen zentrischen Haltebolzen an dem Pumpenrotor gehalten, wobei der Haltebolzen in einem Sackloch des Pumpenrotors fixiert ist. Das Sackloch hat keine unmittelbare fluidische Verbindung zu dem Transportkanal, wird also nicht von Schmiermittel durchströmt.The plug-in coupling element on the pump side is held on the pump rotor by a central retaining bolt, the retaining bolt being fixed in a blind hole in the pump rotor. The blind hole has no direct fluidic connection to the transport channel, so there is no flow of lubricant through it.

Vorzugsweise ist die Exzentrizität der Auslassöffnung größer als der halbe Radius der Steckkupplungs-Stirnwand bzw. des Steckkupplungs-Elementes. Je weiter radial außen die Auslassöffnung angeordnet ist, desto geringer sind die Druckverluste, die sich insbesondere bei hohen Drehzahlen aufgrund der Fliehkraft ergeben, die dem nach radial innen strömenden Schmiermittel nach radial außen entgegenwirkt. Hierdurch wird insbesondere bei hohen Drehzahlen eine ausreichende SchmiermittelVersorgung der gesamten Kupplungsanordnung sichergestellt.The eccentricity of the outlet opening is preferably greater than half the radius of the plug-in coupling end wall or the plug-in coupling element. The farther radially outward the outlet opening is, the lower are the pressure losses that result, in particular at high speeds, due to the centrifugal force that occurs radially inward counteracts flowing lubricant radially outward. This ensures a sufficient supply of lubricant to the entire clutch assembly, especially at high speeds.

Vorzugsweise liegen die Pumpenrotor-Stirnwand, in der die Schmiermittel-Auslassöffnung angeordnet ist, und die gegenüberliegende Steckkupplungs-Stirnwand in einer gemeinsamen Querebene. Beide Stirnwände weisen keinerlei Kanäle oder Nuten mit einer radial nach innen gerichteten Komponente auf.The pump rotor end wall, in which the lubricant outlet opening is arranged, and the opposite plug-in coupling end wall are preferably located in a common transverse plane. Both end walls do not have any channels or grooves with a radially inwardly directed component.

Gemäß einer bevorzugten Ausgestaltung liegen die gehäuseseitige Übergabeöffnung und die rotorseitige Übernahmeöffnung in einer gemeinsamen Zylinderfläche.According to a preferred embodiment, the transfer opening on the housing side and the transfer opening on the rotor side lie in a common cylinder surface.

Der Haltebolzen weist bevorzugt keinerlei eine axiale Komponente aufweisende offene oder geschlossene Kanäle auf. Der Haltebolzen dient ausschließlich zum mechanischen Festhalten des pumpenseitigen Steckkupplungs-Elementes an dem Pumpenrotor, wobei das Steckkupplungs-Element im Verhältnis zu dem Pumpenrotor sowohl in radialer als auch in axialer Richtung mit einem gewissen Spiel beweglich ist.The retaining bolt preferably does not have any open or closed channels having an axial component. The retaining bolt serves exclusively to hold the pump-side plug-in coupling element mechanically on the pump rotor, the plug-in coupling element being movable with a certain amount of play in relation to the pump rotor both in the radial and in the axial direction.

Im folgenden wird unter Bezugnahme auf die Zeichnungen ein Ausführungsbeispiel der Erfindung näher erläutert. Es zeigen:

  • Figur 1 einen Längsschnitt einer erfindungsgemäßen mechanischen Kfz-Vakuumpumpe,
  • Figur 2 eine vergrößerte Darstellung eines Schmiermittel-Versorgungskanals in dem Gehäuse der Kfz-Vakuumpumpe der Figur 1,
  • Figur 3 eine perspektivische Ansicht des Pumpenrotors der Kfz-Vakuumpumpe der Figur 1,
  • Figur 4 eine Draufsicht auf die dem Steckkupplungs-Element zugewandte Seite des Pumpenrotors, und
  • Figur 5 eine zweite Ausführungsform eines stationären Schmiermittel-Versorgungskanals.
In the following, an embodiment of the invention is explained in more detail with reference to the drawings. Show it:
  • Figure 1 a longitudinal section of a mechanical motor vehicle vacuum pump according to the invention,
  • Figure 2 an enlarged view of a lubricant supply channel in the housing of the motor vehicle vacuum pump of Figure 1 ,
  • Figure 3 a perspective view of the pump rotor of the automotive vacuum pump of FIG Figure 1 ,
  • Figure 4 a plan view of the side of the pump rotor facing the plug-in coupling element, and
  • Figure 5 a second embodiment of a stationary lubricant supply channel.

In der Figur 1 ist schematisch eine Vakuumpumpen-Anordnung dargestellt, die im wesentlichen aus einer mechanischen Kfz-Vakuumpumpe 10, einem Verbrennungsmotor 52 und einer dem Verbrennungsmotor 52 zugeordneten Schmiermittelpumpe 54 besteht. Die Vakuumpumpe 10 ist mechanisch über eine Steckkupplungs-Anordnung 68 mit einer Kurbelwelle oder einer Antriebswelle des Verbrennungsmotors 52 rotatorisch gekoppelt. Die Vakuumpumpe 10 dient beispielsweise dazu, für verschiedene Nebenaggregate des Kraftfahrzeugs aktuatorisches Vakuum zur Verfügung zu stellen, beispielsweise für einen pneumatischen Bremskraftverstärker. Die Schmiermittelpumpe 54 fördert das flüssige Schmiermittel für die Schmiermittelversorgung des Verbrennungsmotors 52 und die Schmiermittelversorgung der Vakuumpumpe 10.In the Figure 1 a vacuum pump arrangement is shown schematically, which consists essentially of a mechanical motor vehicle vacuum pump 10, an internal combustion engine 52 and one of the Internal combustion engine 52 associated lubricant pump 54 consists. The vacuum pump 10 is mechanically rotationally coupled to a crankshaft or a drive shaft of the internal combustion engine 52 via a plug-in coupling arrangement 68. The vacuum pump 10 is used, for example, to provide actuator vacuum for various auxiliary units of the motor vehicle, for example for a pneumatic brake booster. The lubricant pump 54 conveys the liquid lubricant for the lubricant supply to the internal combustion engine 52 and the lubricant supply to the vacuum pump 10.

Die Vakuumpumpe 10 ist eine sogenannte Flügelzellenpumpe und weist ein Pumpengehäuse 14 auf, das im Wesentlichen von einem massiven Gehäusekörper 13 und einem Gehäusedeckel 19 gebildet wird. In dem Pumpengehäuse 14 ist ein um eine Längsachse drehbar gelagerter Pumpenrotor 16 angeordnet. Das Pumpenrotor-Gleitlager wird von einer gehäuseseitigen Hohlzylinderfläche 71 und einer korrespondierenden rotorseitigen Außenzylinderfläche 72 gebildet. Der Pumpenrotor 16 weist einen Rotorkörper 17 mit einem radialen Flügelschlitz 21 auf, in dem ein Rotorflügel 18 radial verschiebbar gelagert ist. Der Rotorflügel 18 rotiert in einem von dem Pumpengehäuse 14 definierten Pumpenraum 12 und fördert auf diese Weise Luft von einem nicht dargestellten Pumpeneinlass zu einem nicht dargestellten Pumpenauslass.The vacuum pump 10 is a so-called vane pump and has a pump housing 14 which is essentially formed by a solid housing body 13 and a housing cover 19. A pump rotor 16 that is rotatably mounted about a longitudinal axis is arranged in the pump housing 14. The pump rotor sliding bearing is formed by a hollow cylinder surface 71 on the housing side and a corresponding outer cylinder surface 72 on the rotor side. The pump rotor 16 has a rotor body 17 with a radial vane slot 21 in which a rotor vane 18 is mounted so as to be radially displaceable. The rotor blade 18 rotates in a pump chamber 12 defined by the pump housing 14 and in this way conveys air from a pump inlet (not shown) to a pump outlet (not shown).

Die Steckkupplungs-Anordnung 68 wird von zwei Steckkupplungs-Elementen 20,50 gebildet, die drehfest ineinander greifen, jedoch eine axiale und radiale Bewegung der beiden Steckkupplungs-Elemente 20,50 zueinander zulassen. Das pumpenseitige Steckkupplungs-Element 20 ist über eine komplexe Formschlussstruktur 60 seinerseits drehfest von dem Pumpenrotor 16 gehalten. Die Formschlussstruktur 60 erlaubt ebenfalls eine axiale und radiale Beweglichkeit des pumpenseitigen Steckkupplungs-Elements 20 im Verhältnis zu dem Pumpenrotor 16.The plug-in coupling arrangement 68 is formed by two plug-in coupling elements 20, 50 which interlock in a rotationally fixed manner, but allow an axial and radial movement of the two plug-in coupling elements 20, 50 with respect to one another. The pump-side plug-in coupling element 20 is in turn held in a rotationally fixed manner by the pump rotor 16 via a complex form-fitting structure 60. The form-fit structure 60 also allows axial and radial mobility of the pump-side plug-in coupling element 20 in relation to the pump rotor 16.

Das pumpenseitige Steckkupplungs-Element 20 weist eine durchgehende Zentralbohrung 74 auf, durch die ein Haltebolzen 70 gesteckt ist, der mit Klemmsitz fest in einem zentralen Sackloch 42 des Pumpenrotors 16 fixiert ist. Die Zentralbohrung 74 weist einen Innendurchmesser auf, der geringfügig größer als der Außendurchmesser des Haltebolzens 70 ist, so dass eine gewisse radiale Beweglichkeit des Steckkupplungs-Elements 20 gegenüber dem Pumpenrotor 16 zugelassen wird. Die Länge des Steckbolzen-Schaftabschnittes, der aus dem Sackloch 42 axial herausragt, ist geringfügig größer als die Länge der axialen Zentralbohrung 74, so dass auch eine gewisse axiale Beweglichkeit des Steckkupplungs-Elements 20 im Bezug auf den Pumpenrotor 16 gewährleistet ist.The plug-in coupling element 20 on the pump side has a continuous central bore 74 through which a retaining bolt 70 is inserted, which is firmly fixed with a press fit in a central blind hole 42 of the pump rotor 16. The central bore 74 has an inner diameter which is slightly larger than the outer diameter of the retaining bolt 70, so that a certain radial mobility of the plug-in coupling element 20 with respect to the pump rotor 16 is permitted. The length of the socket pin shaft section, which protrudes axially from the blind hole 42, is slightly greater than the length of the axial central bore 74, so that a certain axial mobility of the plug-in coupling element 20 with respect to the pump rotor 16 is guaranteed.

Der Pumpenrotor 16 weist eine hohlkreuzartige Formschlussstruktur 60 auf, die in der Figur 1 nur schematisch dargestellt ist und den Figuren 3 und 4 detaillierter entnommen werden kann. Die Formschlussstruktur 60 weist eine in einer Querebene liegende Bodenwand 34 auf und ist umgeben von einer Seitenwand 40, die die hohlkreuzartige Formschlussstruktur 60 definiert. Das Steckkupplungs-Element 20 weist an seiner dem Pumpenrotor 16 zugewandten Seite eine zu der hohlkreuzartigen Formschlussstruktur annähernd komplementäre kreuzartige Formschlussstruktur auf, die eine drehfeste Kopplung des Steckkupplungs-Elements 20 mit dem Pumpenrotor 16 herstellt. Das Steckkupplungs-Element 20 weist eine Stirnwand 36 auf, die ebenfalls in einer Querebene liegt und an die pumpenrotorseitige Bodenwand 34 parallel angrenzt. Zwischen der Formschlussstruktur-Seitenwand 40 und der Umfangswand 38 des Steckkupplungs-Elements 20 ist ein radialer Spalt vorgesehen, durch den eine gewisse radiale Beweglichkeit des Steckkupplungs-Elements 20 im Verhältnis zu dem Pumpenrotor 16 zugelassen wird. Das Steckkupplungs-Element 20 weist auf seiner distalen Seite mehrere axiale Klauen 44 auf, die mit korrespondierenden Klauen des motorseitigen Steckkupplungs-Elements 50 ineinander greifen.The pump rotor 16 has a hollow cross-like interlocking structure 60, which in the Figure 1 is only shown schematically and the Figures 3 and 4th can be found in more detail. The form-fit structure 60 has a bottom wall 34 lying in a transverse plane and is surrounded by a side wall 40 which defines the hollow cross-like form-fit structure 60. On its side facing the pump rotor 16, the plug-in coupling element 20 has a cross-like form-fitting structure that is approximately complementary to the hollow cross-like form-fit structure, which creates a rotationally fixed coupling of the plug-in coupling element 20 to the pump rotor 16. The plug-in coupling element 20 has an end wall 36, which likewise lies in a transverse plane and adjoins the bottom wall 34 on the pump rotor side in parallel. A radial gap is provided between the form-fit structure side wall 40 and the peripheral wall 38 of the plug-in coupling element 20, through which a certain radial mobility of the plug-in coupling element 20 in relation to the pump rotor 16 is permitted. The plug-in coupling element 20 has a plurality of axial claws 44 on its distal side, which mesh with corresponding claws of the plug-in coupling element 50 on the motor side.

Das Pumpengehäuse 14 bzw. der Gehäusekörper 13 weist einen Schmiermittel-Versorgungskanal 22 auf, durch den von einem gehäuseseitigen Schmiermittel-Einlass 24 das über eine Leitung 56 von der Schmiermittelpumpe 54 unter Druck kommende flüssige Schmiermittel zu einer Übergabeöffnung 26 geleitet wird, die in der Hohlzylinderfläche 71 des Rotor-Gleitlagers liegt. Der Pumpenrotor 16 weist einen Schmiermittel-Transportkanal 30 auf, durch den das Schmiermittel von einer Übernahmeöffnung 28 zu einer Schmiermittel-Auslassöffnung 32 geleitet wird. Die Übernahmeöffnung 28 liegt in der Gleitlager-Außenzylinderfläche 72 und ist derart angeordnet, dass die Übernahmeöffnung 28 während jeder vollen Umdrehung des Pumpenrotors 16 einmal mit der Übergabeöffnung 26 fluchtet, so dass auf diese Weise eine intermittierender Schmiermittel-Strom realisiert wird. Die Schmiermittel-Auslassöffnung 32 liegt in der Bodenwand 34 der Formschlussstruktur 60, wobei die Stirnwand 36 des Steckkupplungs-Elements 20 die Auslassöffnung 32 verdeckt, jedoch durch den Fluiddruck des austretenden Schmiermittels in einem kleinen axialen Abstand gehalten wird.The pump housing 14 or the housing body 13 has a lubricant supply channel 22 through which the liquid lubricant coming under pressure from the lubricant pump 54 via a line 56 from the lubricant pump 54 is passed from a lubricant inlet 24 on the housing side to a transfer opening 26 which is in the hollow cylinder surface 71 of the rotor sliding bearing is located. The pump rotor 16 has a lubricant transport channel 30 through which the lubricant is guided from a transfer opening 28 to a lubricant outlet opening 32. The transfer opening 28 lies in the plain bearing outer cylinder surface 72 and is arranged such that the transfer opening 28 is aligned with the transfer opening 26 once during each full revolution of the pump rotor 16, so that an intermittent flow of lubricant is realized in this way. The lubricant outlet opening 32 lies in the bottom wall 34 of the form-fitting structure 60, the end wall 36 of the plug-in coupling element 20 covering the outlet opening 32, but being kept at a small axial distance by the fluid pressure of the exiting lubricant.

Wie in der Figur 2 gut erkennbar ist, ist die Auslassöffnung 32 exzentrisch zu der Rotationsachse des Pumpenrotors 16 angeordnet. Die Exzentrizität E der Schmiermittel-Auslassöffnung 32 beträgt vorliegend mehr als 3/4 des Radius R der Steckkupplungs-Stirnwand 36. Der Transportkanal 30 ist rechtwinklig in dem Gehäusekörper 13 ausgebildet. In einer zweiten Ausführungsform des Pumpenrotors 16', die in der Figur 5 dargestellt ist, ist der Transportkanal 30', der in der Schmiermittel-Auslassöffnung 32' mündet, schräg und geradlinig ausgebildet. Bei dieser Ausführungsform ist die Herstellung des Transportkanals 30 vereinfacht, da zu seiner Herstellung nur ein einziger Bohrvorgang erforderlich ist.Like in the Figure 2 As can be clearly seen, the outlet opening 32 is arranged eccentrically to the axis of rotation of the pump rotor 16. In the present case, the eccentricity E of the lubricant outlet opening 32 is more than 3/4 of the radius R of the plug-in coupling end wall 36. The transport channel 30 is formed at right angles in the housing body 13. In a second embodiment of the pump rotor 16 ', which is shown in FIG Figure 5 is shown, the transport channel 30 ', which opens into the lubricant outlet opening 32', is oblique and straight. In this embodiment, the production of the transport channel 30 is simplified, since only a single drilling process is required for its production.

Claims (4)

  1. Mechanical vacuum pump (10) for a motor vehicle, comprising a pump rotor (16) rotatably mounted in a stationary pump housing (14) and a separate pump-side plug-coupling element (20) which is connected for conjoint rotation with the pump rotor (16), wherein a lubricant supply is provided for lubricating the plug-coupling element (20), the lubricant supply comprising:
    a stationary lubricant supply channel (22) in the pump housing (14), through which the lubricant is pumped from a lubricant inlet (24) of the pump housing (14), in the direction of the coupling arrangement (20), to a transfer opening (26), and
    a lubricant transport channel (30; 30') in the pump rotor (16; 16'), wherein
    the lubricant is pumped through the transport channel (30; 30') from an acceptance opening (28) to a lubricant outlet opening (32),
    wherein the transfer opening (26) and the acceptance opening (28) are arranged such that they are temporarily in fluid communication with one another at least once during a rotation of the pump rotor (16), and
    wherein the outlet opening (32) is arranged eccentrically in an end wall (34) of the pump rotor (16),
    wherein the plug-coupling element (20) is retained at the pump rotor (16) by a retaining bolt (70), and
    wherein said retaining bolt (70) is fixed in a blind bore (42) of the pump rotor (16) that is not in direct fluid communication with the transport channel (30, 32) so that lubricant does not flow through the blind hole (42).
  2. Mechanical vacuum pump (10) for a motor vehicle of claim 1, wherein the eccentricity (E) of the outlet opening (32) is greater than half the radius (R) of the plug-coupling end wall (36).
  3. Mechanical vacuum pump (10) for a motor vehicle of one of the preceding claims, wherein the pump rotor end wall (34) and the plug-coupling end wall (36) are situated in a common transversal plane.
  4. Mechanical vacuum pump (10) for a motor vehicle of one of the preceding claims, wherein the transfer opening (26) and the acceptance opening (28) are situated in a common cylinder surface.
EP14197706.6A 2014-12-12 2014-12-12 Mechanical motor vehicle vacuum pump Active EP3032105B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14197706.6A EP3032105B1 (en) 2014-12-12 2014-12-12 Mechanical motor vehicle vacuum pump
PCT/EP2015/079064 WO2016091922A1 (en) 2014-12-12 2015-12-09 Mechanical vacuum pump for a motor vehicle
JP2017516707A JP6317527B2 (en) 2014-12-12 2015-12-09 Automotive mechanical vacuum pump
US15/534,004 US10443599B2 (en) 2014-12-12 2015-12-09 Mechanical vacuum pump for a motor vehicle
CN201580056729.3A CN107002682B (en) 2014-12-12 2015-12-09 Mechanical vacuum pump for motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14197706.6A EP3032105B1 (en) 2014-12-12 2014-12-12 Mechanical motor vehicle vacuum pump

Publications (2)

Publication Number Publication Date
EP3032105A1 EP3032105A1 (en) 2016-06-15
EP3032105B1 true EP3032105B1 (en) 2021-05-19

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EP14197706.6A Active EP3032105B1 (en) 2014-12-12 2014-12-12 Mechanical motor vehicle vacuum pump

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US (1) US10443599B2 (en)
EP (1) EP3032105B1 (en)
JP (1) JP6317527B2 (en)
CN (1) CN107002682B (en)
WO (1) WO2016091922A1 (en)

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Publication number Priority date Publication date Assignee Title
WO2018010793A1 (en) * 2016-07-14 2018-01-18 Pierburg Pump Technology Gmbh Motor vehicle vacuum pump
CN110291302B (en) 2017-01-30 2021-08-17 利滕斯汽车合伙公司 Clutch type vacuum pump system

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JPS58133495A (en) * 1982-02-02 1983-08-09 Matsushita Electric Ind Co Ltd Oil feeder for rotary vane compressor
EP1361365B1 (en) * 1998-09-30 2005-08-10 Luk Automobiltechnik GmbH & Co. KG Vacuum pump and plastic rotor
DE19961317C1 (en) * 1999-12-18 2001-06-28 Bayerische Motoren Werke Ag Vacuum pump, in particular vane vacuum pump
KR100427567B1 (en) * 2001-04-12 2004-04-17 주식회사 우성진공 Rotary vane type vacuum pump rota
JP2004092504A (en) 2002-08-30 2004-03-25 Toyoda Mach Works Ltd Vane type vacuum pump
DE112006002033A5 (en) * 2005-05-19 2008-04-30 Luk Automobil Technik Gmbh & Co. Kg Vane pump
WO2009046810A1 (en) * 2007-10-02 2009-04-16 Ixetic Hückeswagen Gmbh Vacuum pump, particularly a vane pump
US8384121B2 (en) 2010-06-29 2013-02-26 Cooledge Lighting Inc. Electronic devices with yielding substrates
JP5589532B2 (en) 2010-04-27 2014-09-17 大豊工業株式会社 Vane pump
EP2559903A1 (en) * 2011-08-17 2013-02-20 Wabco Automotive UK Limited Improved vacuum pump
US9915264B2 (en) 2012-10-22 2018-03-13 Magna Powertrain Bad Homburg GmbH Intermittent coupling oiling

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WO2016091922A1 (en) 2016-06-16
JP6317527B2 (en) 2018-04-25
US20180335035A1 (en) 2018-11-22
CN107002682B (en) 2019-08-20
CN107002682A (en) 2017-08-01
US10443599B2 (en) 2019-10-15
JP2017532490A (en) 2017-11-02
EP3032105A1 (en) 2016-06-15

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