Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
  • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
  • F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical

Definitions

• the present invention relates to a piston pump for delivering fluids, and more particularly relates to a piston pump for conveying air used in a seat system for a vehicle to fill seat cushions with air or suck air from the seat cushions and deflate the seat cushions.
• the present invention relates to a seating system with an integrated piston pump.
• Vane pumps, screw compressors, Roots compressors, etc. used.
• these known machines have the disadvantage that they generate relatively strong noises during operation, in particular when they are operated at high speeds to ensure a desired flow rate.
• seat pad used to a massage function Valx to provide a person sitting on the seat or in order to fill or empty a seat pad area in response to lateral accelerations acting on the vehicle during a curve passage or the like.
• the known machines that are used in the seats must be operated at high speeds, which leads to unwanted noise in operation.
• Di_e piston pump according to the invention for the promotion of fluids iri-Lt the features of claim 1 has the advantage that it is very compact and ei-ne particularly low-noise promotion of fluids allows.
• e Ln piston member is movable by means of a crank mechanism, wherein the crank mechanism is fixed to a gear which is driven by a drive.
• a piston pump according to the invention can be used in particular in seats of vehicles, since it is physically small and works noiselessly even at high speeds.
• the Unteranspiüche show preferred developments of the invention.
• the transmission is designed as a single intermediate gear, which is arranged between the output shaft with worm toothing and the gear of the crank mechanism.
• the intermediate gear on a helical toothed portion and an end-toothed portion.
• the helical and the end-toothed area are arranged adjacent to each other on an outer periphery.
• a plurality of piston elements is provided, which are preferably arranged in series.
• a particularly flat construction of the inventive piston pump can be realized, since the thickness of the KoXbenpumpe depends only on the piston diameter or Zylinderdurcri knife.
• the crank mechanism according to the invention «of the piston elements does not increase the required space in contrast to the known crankshaft, since the crank mechanism according to the invention is attached to the gear.
• a first gear of a first piston element drives a second gear of a second, adjacent one
• Piston element on If more than two piston elements are provided, preferably the gear of the second piston element drives the adjacent gear of the third piston element, etc.
• four piston elements are preferably arranged, wherein the crank mechanisms of the piston elements on the gears
• Positions of each 90 ° are arranged offset from each other.
• valves of the piston pump are arranged in a cover region of the cylinder.
• the drive of the piston pump is an electric motor.
• the present invention relates to a seat system for a vehicle comprising a piston pump according to the invention.
• The; Piston pump serves to convey a fluid, in particular to convey air, in order to fill or empty one or more seat cushion regions of the vehicle seat. Since the piston pump is very compact, it can be integrated directly into the driver's seat in the vehicle interior. Since the piston pump according to the invention virtually no
• the seat cushion areas of the vehicle seat are filled or emptied depending on transverse acceleration movements acting on the vehicle.
• an improved lateral support in the seat can be obtained, for example, when cornering through corresponding filling of lateral seat cushion areas. which support the person on it.
• More preferably, with the erfindungsgernä touch piston pump and a massage function can be performed by constantly filling or emptying the seat cushion.
• FIG. 1 is a schematic view of a piston pump according to one embodiment of the present invention.
• FIG. 2 shows a schematic side view of the piston pump shown in FIG. 1,
• FIG. 3 is a schematic Ansictit of the housing
• Figure 4 is a schematic plan view of the piston pump according to the invention.
• the piston pump according to the invention comprises four pistons 2, which are arranged in series.
• Each piston 2 comprises a crank mechanism 3, consisting of a rod 3a, a first bolt 3b and a second bolt 3c.
• the rod 3a is fixed in the piston 2 in a known manner.
• the second pin 3c is used to attach the rod 3a to a gear 4.
• the gear 4 comprises a first end-toothed wheel 4a and a second end-toothed wheel 4b, which are arranged parallel to each other on a respective lateral pin 8.
• the crank mechanism 3 of the pistons is thus CH. each disposed between the first and the second cRad 4a and 4b and secured by the second bolt 3c.
• the piston pump 1 comprises a motor 9, which drives an output shaft 5 of the motor.
• a Schneckenverzalxnung 6 is arranged on the output shaft 5 .
• the worm gear 6 is engaged with an intermediate gear 7 in engagement.
• the intermediate gear 7 is arranged as a transmission between the worm gear 6 of the output shaft 5 and the gears 4 of the piston.
• the intermediate pinion gear 7 comprises a first end toothing 7a, a second end toothing 7b and a worm toothing 7c.
• Worm gear 7c is arranged in the middle between the two spur gears 7a and 7b.
• the Sehneckenvertechnikung 7c is with the worm gear 6 of the output shaft 5 in engagement.
• the spur gears 7a and 7b of the intermediate gear are respectively engaged with the spur gear wheels 4a and 4b, as shown in FIG.
• the pistons 2 are each arranged adjacently in series. It drives in the series first gear 4, which is driven by the intermediate gear 7, the adjacent next gear 4 of the next piston 2, which in turn drives again the next adjacent gear, etc.
• the pistons 2 are fastened to the toothed wheel 4 in such a way that they are each arranged at 90 ° to each other. This measure makes it possible to minimize pulsation of the delivery flow. Furthermore, the piston pump according to the invention can thereby be operated with a greater smoothness.
• Figure 3 shows schematically the cylinder housing, which receives the piston 2 and which is covered with a cylinder cover 11.
• valves 12 are arranged on the front side, so that a particularly space-saving design is possible.
• the valves 12 are preferably designed as check valves to allow easy control of the pump.
• a gear housing of the intermediate gear 7 is designated by the reference numeral 14.
• a side plate 13 is provided, on which the gears 4 are rotatably supported by means of the pins 8.
• crank mechanism 3 on the gear 4 a particularly compact and flat structure can be realized. Furthermore, by using the worm gear between the worm gear 6 and the intermediate gear 7, a noiseless operation of the piston pump 1 can be realized.
• the use of the worm drive makes it possible to produce a reduction of the rotational speed of the output shaft 5 on the intermediate gear 7, without additional transmission elements are necessary.
• the crank mechanisms 3 of the pistons 2 are then transmitted via the identically designed gears 4.
• the thickness of the piston pump 1 essentially depends on the diameter of the pistons 2 and of the cylinder.
• the sequential arrangement of the crank mechanisms allows a particularly flat design of a multi-cylinder pump or a
• Multi-cylinder compressor The use of the worm drive further allows a construction with high

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Reciprocating Pumps (AREA)
• Details Of Reciprocating Pumps (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34972600

Family Applications (1)

Country Status (7)

Families Citing this family (8)

Citations (6)

Family Cites Families (7)

• 2004
  • 2004-09-22 DE DE102004045817A patent/DE102004045817A1/de not_active Withdrawn
• 2005
  • 2005-06-30 JP JP2007531727A patent/JP4723588B2/ja not_active Expired - Fee Related
  • 2005-06-30 AT AT05763076T patent/ATE411467T1/de not_active IP Right Cessation
  • 2005-06-30 KR KR1020077006576A patent/KR100995488B1/ko not_active IP Right Cessation
  • 2005-06-30 EP EP05763076A patent/EP1794452B1/de not_active Not-in-force
  • 2005-06-30 WO PCT/EP2005/053102 patent/WO2006032548A1/de active Application Filing
  • 2005-06-30 DE DE502005005714T patent/DE502005005714D1/de active Active
  • 2005-06-30 ES ES05763076T patent/ES2315886T3/es active Active

Patent Citations (6)

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