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
  • F04C2/00—Rotary-piston machines or pumps
  • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
  • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
  • F04C2/086—Carter
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
  • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
  • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
  • B60T8/42—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure, i.e. closed systems
  • B60T8/4275—Pump-back systems
• • 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
  • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
  • F04C13/001—Pumps for particular liquids
  • F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
• • 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
  • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
  • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
  • F04C15/0007—Radial sealings for working fluid
  • F04C15/0019—Radial sealing elements specially adapted for intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
• • 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
  • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
  • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
  • F04C15/0023—Axial sealings for working fluid
  • F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
• • 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
  • F04C2/00—Rotary-piston machines or pumps
  • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
  • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
  • F04C2/084—Toothed wheels
• • 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
  • F04C2/00—Rotary-piston machines or pumps
  • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
  • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than 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
  • F04C2/00—Rotary-piston machines or pumps
  • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
  • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
  • F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
• • 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
  • F04C2/00—Rotary-piston machines or pumps
  • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
  • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
  • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes

Definitions

• the invention relates to an internal gear pump having the features of the preamble of claim 1.
• Such internal gear pumps are used instead of commonly used piston pumps in slip-controlled and / or power vehicle braking systems, and often, although not necessarily aptly referred to as return pumps ,
• Internal gear pumps are known. They have a pinion gear, that is to say an externally toothed gear wheel which is arranged eccentrically in an internally toothed ring gear and meshes with the ring gear at one point of the circumference or in a circumferential section.
• the pinion and the ring gear can also be understood as gears of the internal gear pump.
• the internal gear pump has a sickle-shaped clearance between the pinion and the ring gear, which is referred to here as the pump chamber.
• a separator is arranged, which divides the pump room into a suction and a pressure area. Due to its typical shape, the separator is also referred to as sickle or sickle piece, another name is filler.
• a typically hollow-round inner side of the separator is located on tooth tips of teeth of the pinion and a typically outwardly curved outside of the separator is located on tooth tips of teeth of the teeth Ring gear, so that the separator includes fluid volumes in interdental spaces between the teeth of the gears of the internal gear pump.
• the published patent application DE 10 2009 047 643 A1 discloses such an internal gear pump, whose separating piece is multi-part and an inner part, the inner side of the tooth tips of the teeth of the pinion, and an outer part, the outer side of which bears against the tooth tips of teeth of the ring gear.
• the inner part and the outer part of the separator of the known internal gear pump are supported in the circumferential direction on a bolt, which forms an abutment.
• the abutment-forming bolt is arranged on the suction side of the separator and passes through the pump chamber transversely or axially parallel.
• the internal gear pump according to the invention with the features it claim 1 comprises a multi-part separator with an inner part which rests on tooth tips of teeth of a pinion, and an outer part which bears against tooth tips of teeth of a ring gear on.
• the inner part and the outer part of the separator are movably connected to one another in the radial direction.
• “Radial” as well as the terms “circumferential”, “circumferential direction” and “axial” used below refer to the internal gear pump and an intended installation position of the parts. A mobility of the inner part and the outer part in other than in the radial direction is not excluded.
• the mobility of the inner part and the outer part in the radial direction of the internal gear pump enables the intended abutment of the inner part and the outer part on the tooth tips of the teeth of the gears of the mecanicariaffyradpum- PE.
• the connection of the inner part with the outer part allows handling of the multi-part separator as a component and simplifies installation of the internal gear pump.
• Claim 2 provides that to the movable connection in the radial direction, the inner part and the outer part engage behind each other with play in the radial direction.
• the development according to claim 3 provides that the outer part surrounds the inner part or vice versa at the peripheral ends.
• Claim 4 provides that the inner part is supported in a circumferential direction on the outer part. This means that the inner part rests against the outer part, which facilitates a seal between the inner part and the outer part.
• Claim 4 also includes the inverse, i. that the outer part is supported in the circumferential direction on the inner part. Preferably, only one of the two parts of the separating piece is supported in the circumferential direction directly on an abutment of the internal gear pump, the other part being supported indirectly via the one part on the abutment.
• Claim 7 provides for a construction of components of the separator as a pre-assembled assembly, which can be used after its pre-assembly as a component in the pump space between the gears of the internal gears.
• the internal gear pump according to the invention is provided in particular as a hydraulic pump for a hydraulic, slip-controlled and / or foreign-powered vehicle brake system.
• hydraulic pumps are also referred to as return pumps and today are predominantly designed as piston pumps.
• FIGURE shows an internal gear pump according to the invention in front view.
• inventive internal gear pump 1 has an externally toothed, here referred to as pinion gear 2 and an internally toothed, here referred to as ring gear 3 gear.
• the pinion 2 is arranged axially parallel and eccentrically in the ring gear 3, that the pinion 2 meshes with the ring gear 3.
• the pinion 2 is non-rotatably mounted on a pump shaft 4, with which the pinion 2 and the pinion 2, the intermeshing with him ring gear 3 are rotationally driven.
• One direction of rotation is indicated by arrows P.
• the ring gear 3 is rotatably mounted in a bearing ring 5 slidably.
• the internal gear pump 1 has a sickle-shaped clearance, which is referred to here as the pump chamber 6.
• the pump chamber 6 is also a sickle or semi-sickle-shaped, multi-part separator 7 is arranged, which divides the pump chamber 6 in a suction region 8 and a pressure region 9.
• the suction region 8 communicates with a pump inlet 10, which is designed as a bore and transversely, i. axially parallel to the internal gear pump 1 from one side into the suction region 8 of the pump chamber 6 opens.
• the pressure region 9 communicates with a pump outlet 11, which in the embodiment is designed as an arcuate slot and opens from one side into the pressure region 9 of the pump chamber 6.
• the arcuate pump outlet 11 is partially overlapped by the separator 7 and is in the circumferential direction a piece far over a pressure-side end of the separator 7 in the pressure region 9 of the pump chamber 6 via.
• the multi-part separator 7 has an arcuate inner part 12 and a likewise bow-shaped and bow-shaped outer part 13.
• a concave and cylindrical inside of the inner part 12 is located on tooth tips of teeth of the pinion 2 and a convex cylindrical outer side of the outer part 13 abuts against tooth tips of teeth of the ring gear 3.
• the pumped fluid is brake fluid.
• the outer part 13 surrounds the inner part 12 so far that a rear handle is formed, which connects the inner part 12 with play in the radial direction with the outer part 13.
• the connected by the rear handle or the enclosed at the ends of the outer part 13 inner part 12 are movable in the radial direction against each other.
• a leaf spring 14 is arranged, which presses the inner part 12 and the outer part 13 apart and thereby as provided in abutment against the tooth tips of the teeth of the pinion 2 and the ring gear 3.
• the leaf spring 14 in the undeformed state flat, with a different curvature than the inner part 12 and the outer part 13 may be curved or wavy. The list is not exhaustive.
• the gap between the inner part 12 and the outer part 13, in which the leaf spring 14 is arranged communicates with the pressure region 9, so that the same pressure prevails in the gap between the inner part 12 and the outer part 13 as in the pressure region 9. This pressure also pushes the inner part 12 and the outer part 13 of the separator 7 apart and against the
• a sealing element 15 between the inner part 12 and the outer part 13 of the separator 7 is arranged between the inner part 12 and the outer part 13 and axially not shown on end or side walls of a pump housing or on so-called. Axialusionn the internal gear - Pump 1, which limit the pump chamber 6 side seals.
• the sealing element 15 is cylindrical in the undeformed state. Other shapes of the sealing element are possible.
• the outer part 13 of the separator 7 is supported in the circumferential direction of an abutment 16, which is arranged at a suction-side end of the separator 7.
• the abutment 16 is a cylinder pin with a flat 17, at which the suction-side end of the outer part 13 of the separator. 7 is applied.
• the abutment 16 forming bolt passes through the pump chamber 6 of the internal gear pump 1 in the suction region 6 transversely, ie axially parallel.
• the inner part 12 of the separator 7 is not supported directly on the abutment 16, but indirectly via the outer part 13.
• a suction-side end of the inner part 12 abuts against the suction-area-side end of the outer part 13 which surrounds the end.
• the system of the inner part 12 on the outer part 13 simplifies a seal between the inner part 12 and the outer part 13, for which a simple seal such as the cylindrical sealing element 15 is sufficient. It is not a complicated, complicated or multi-part seal necessary.
• the ends of the inner part 12 embracing ends of the outer part 13 cause we described a rear grip with game that connects the inner part 12 in the radial direction of the internal gear pump 1 movable with the outer part 13.
• the parts of the separator 7, namely the inner part 12, the outer part 13, the leaf spring 14 and the sealing element 15, form an assembly which is preassembled outside of the inner gear pump 1.
• the separating piece 7 formed as an assembly is used as a component in the pump space 6 between the pinion 2 and the ring gear 3, for which only the inner part 12 and the outer part 13 must be radially compressed, so that their distance is not greater than the gap between the tooth - Heads of the teeth of the pinion 2 and the ring gear 3 is.
• the assembly of the separator 7 in the internal gear pump 1 is thereby simple, which is a considerable advantage in small components, as is the case with an internal gear pump 1, which is used as a hydraulic pump of a hydraulic vehicle brake system.
• the internal gear pump 1 is provided as a hydraulic pump of a hydraulic, slip-controlled and / or foreign-vehicle brake system, where it serves for slip control as Bremsblockierschutz-, traction and / or vehicle dynamics controls and / or in hydraulic power-vehicle braking systems to brake pressure generation.
• Such hydraulic pumps are, though not necessarily also known as return pumps.
• return pumps For the mentioned slip regulations they use the abbreviations ABS, ASR, FDR and ESP.
• Vehicle dynamics regulations are colloquially referred to as anti-skid regulations.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Transportation (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Rotary Pumps (AREA)
• Details And Applications Of Rotary Liquid Pumps (AREA)
• Regulating Braking Force (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (7)

Families Citing this family (8)

Family Cites Families (13)

• 2012
  • 2012-09-25 DE DE102012217225.4A patent/DE102012217225A1/de not_active Withdrawn
• 2013
  • 2013-07-29 EP EP13742628.4A patent/EP2901015A2/de not_active Withdrawn
  • 2013-07-29 WO PCT/EP2013/065867 patent/WO2014048612A2/de active Application Filing
  • 2013-07-29 US US14/428,784 patent/US9481347B2/en active Active
  • 2013-07-29 KR KR1020157007402A patent/KR102065910B1/ko active IP Right Grant
  • 2013-07-29 CN CN201380049965.3A patent/CN104704237B/zh active Active
  • 2013-07-29 JP JP2015532343A patent/JP6138946B2/ja active Active

Non-Patent Citations (1)

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