EP2049797A1 - Dispositif de couplage d'un piston à un disque annulaire - Google Patents

Dispositif de couplage d'un piston à un disque annulaire

Info

Publication number
EP2049797A1
EP2049797A1 EP07722535A EP07722535A EP2049797A1 EP 2049797 A1 EP2049797 A1 EP 2049797A1 EP 07722535 A EP07722535 A EP 07722535A EP 07722535 A EP07722535 A EP 07722535A EP 2049797 A1 EP2049797 A1 EP 2049797A1
Authority
EP
European Patent Office
Prior art keywords
piston
bridge
shell
annular disc
inner shell
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
EP07722535A
Other languages
German (de)
English (en)
Other versions
EP2049797B1 (fr
Inventor
Marc Hohmann
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.)
ixetic Bad Homburg GmbH
Original Assignee
Ixetic Mac 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 Mac GmbH filed Critical Ixetic Mac GmbH
Publication of EP2049797A1 publication Critical patent/EP2049797A1/fr
Application granted granted Critical
Publication of EP2049797B1 publication Critical patent/EP2049797B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
    • F04B27/0878—Pistons
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • 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
    • F04B25/00—Multi-stage pumps
    • F04B25/04—Multi-stage pumps having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
    • F04B27/0878—Pistons
    • F04B27/0886—Piston shoes
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00

Definitions

  • the invention relates to a device for coupling a piston to an annular disc, in particular to a swivel / swash plate or to a swivel ring of the working unit of a reciprocating engine, preferably a compressor of the air conditioning system of a motor vehicle, with a piston associated with the piston bridge and between the annular disc and the piston bridge acting sliding blocks, wherein the piston bridge at least partially encompasses or overlaps the annular disc and is in sliding engagement with the annular disc via the sliding shoes.
  • Such a reciprocating engine can be, for example, a compressor, for example a compressor for the air conditioning system of a motor vehicle.
  • Such compressors are also commonly referred to as air conditioning compressors and include a housing which includes an externally driven compressor unit.
  • the compressor unit designed, for example, as an axial piston machine, in turn, comprises a plurality of pistons, which can be moved back and forth in a cylinder block. Upon rotation of a swash plate usually formed as an annular disc or when pivoting a corresponding swash plate, the pistons are moved back and forth.
  • the housing is usually closed.
  • Schwenkinnkompressoren or swing ring compressors are well known in a variety of designs. For example only, reference is made to DE 44 41 721 A1 and to DE 100 10 142 C2.
  • a circular, ring-like swash plate also called swivel ring
  • the swashplate is driven for rotation by the machine shaft. This is done via a slide body guided axially on the machine shaft and via a driving pin arranged at a distance from the machine shaft.
  • the pistons have hinge assemblies on which the swashplate is in sliding engagement.
  • the known reciprocating engine comprises a working unit with a plurality of correspondingly driven pistons, wherein the pistons are guided in cylinder bores and follow through special coupling elements of the pivoting / tumbling motion of the annular disc and thus perform their stroke.
  • the genus-forming device used in the known reciprocating engine is usually made of relatively thick sheet metal, resulting in sufficiently large clearance for shoes and swivel ring - forcibly - results in a considerable size.
  • embossments are often required to increase the clearance for the shoes and the swivel ring, which displace the material of the piston bridge to the outside, which in turn results in an increase in the installation space, namely a radial space enlargement. All this is almost diametrically opposed to a miniaturization, that is to say, a reduction in the space available today.
  • the present invention is therefore based on the object, such a device for coupling a piston to an annular disc, in particular to a swivel / swash plate or to a swivel ring of the working unit of a reciprocating engine, preferably a compressor of the air conditioning of a motor vehicle and further educate, that at sufficiently large clearance for the shoes and the pivot ring lowest possible space with sufficient strength can be realized.
  • a reciprocating engine should be specified with a corresponding device.
  • the genus-forming device is characterized in that the piston bridge is designed to have two layers, at least on the side facing the piston.
  • a sufficient flexural rigidity of the piston bridge can be achieved by carrying out this in two layers, at least on the side facing the piston, that is to say on the pressure side, namely using substantially thinner plates which together generate sufficient bending stiffness.
  • the use of at least two sheets for realizing a two-layer design of the shoe has the further advantage that can be realized with each of the sheets much narrower bending radii, resulting in a wider clearance for the shoes and the pivot ring inside the shoe.
  • the material of the piston bridge is designed as a two-layer sheet, and it is quite conceivable to form the piston bridge with three- or multi-layered sheets, in accordance with the respective requirements.
  • the piston bridge comprises an inner shell and an outer shell, wherein between the inner shell and the outer shell one or more intermediate shells may be provided.
  • the intermediate shells can in turn be designed as a partial shell or as a full shell.
  • the individual areas of the piston bridge can be designed differently strong and with different shapes, recesses, punched, etc.
  • the outer shell extends from the side facing the piston, that is from the piston, via a side surface to or beyond the side of the piston bridge facing away from the piston.
  • the inner shell and possibly the outer shell on opposite sides outwardly embossed or curved portions of a pressure pan (on the side facing the piston) and a suction pan (on the side facing away from the piston), which To take up the sliding shoes.
  • a pressure pan on the side facing the piston
  • a suction pan on the side facing away from the piston
  • the inner shell preferably in a side surface, a recess, preferably a punched out, which increases the space within the piston bridge and thus the clearance for the annular disc and / or the sliding shoes by the wall thickness of the inner shell ,
  • This measure has the great advantage that an embossing of the entire piston bridge with a material displacement to the outside is not required, and thus unwanted enlargement of the space in the radial direction is largely avoided.
  • the two or more shells can be arranged almost positively to each other. It is also conceivable to realize a kind of non-positive connection between the two shells, so that the shells are mechanically connected to each other due to a material-specific bias. Alternatively or additionally, it is conceivable that the trays are adhesively bonded or by means of rivets.
  • the shells are connected by welding technology.
  • at least one of the shells to be connected preferably the inner shell, point or line-shaped elevations, preferably embossed ridges, which favor the resistance welding opposite the opposite shell.
  • the resulting between the shells space allows a more extensive embossing of the inner shell to increase the space within the piston bridge and thus to increase the clearance for the shoes and / or the pivot ring.
  • the piston bridge can be welded to the piston via its outer shell, wherein any otherwise conceivable connection technique is possible.
  • the piston can be designed as a hollow body in the sense of a closed-end sleeve, wherein the outer shell of the piston bridge can serve to seal the sleeve forming the piston.
  • Fig. 1 in a schematic view, cut, an embodiment of a device according to the invention comprising a piston with piston bridge and
  • Fig. 2 is a schematic view of a second embodiment of a piston bridge with spaced apart shells.
  • FIG. 1 shows an embodiment of a device according to the invention for coupling a piston 1 to an in the figure only indicated annular disc 2 of the working unit of a reciprocating engine.
  • a reciprocating piston engine not shown here, reference is expressly made to the already mentioned DE 197 49 727 C2, there in particular Figures 1 and 2 together with the associated description.
  • the depiction of a complete reciprocating engine is dispensed with here, especially as it concerns the device for coupling a piston to a corresponding annular disk.
  • Fig. 1 it is indicated that the piston 1 is in sliding engagement with the annular disc 2, wherein the piston 1 is assigned a piston bridge 3.
  • Sliding shoes 4 act between the annular disc 2 and the piston bridge 3, wherein the piston bridge 3 engages around the annular disk 2 at the end and the piston 1 is in sliding engagement with the annular disk 2 via the sliding shoes 4 and the piston bridge 3.
  • the material of the piston bridge 3 is designed as a two-layered sheet, the piston bridge 3 comprising an inner shell 6 and an outer shell 7.
  • FIG. 1 further shows that the outer shell 7 extends from the side facing the piston 1 over a side surface 11 to the edge of the opposite side, that is, as far as the edge of the suction side 8.
  • the piston bridge 3 is single-layered on the less loaded suction side 8, resulting in a material saving for weight reduction.
  • FIG. 1 further shows that the inner shell 6 and, at least on the pressure side 5, the outer shell 7 also has outwardly embossed or bent regions on opposite sides for forming a pressure pan 9 and a suction cup 10.
  • the pressure pan 9 and the suction cup 10 together serve for receiving the sliding shoes 4 and thus for sliding engagement for the annular disk 2.
  • the region of the suction cup 10 is designed as a single layer, namely due to the inner shell 6 provided there.
  • the pressure cup 9 is formed in two layers, namely both through the inner shell 6 as well as through the outer shell 7, namely to be able to absorb forces accordingly.
  • Fig. 1 further shows clearly that in the side surface 11, in the inner shell 6, a recess 12 is provided in the form of a punch, which is the space within the piston bridge 3 and thus the clearance for the annular disc 2 and / or the sliding shoes 4 enlarged.
  • a recess 12 is provided in the form of a punch, which is the space within the piston bridge 3 and thus the clearance for the annular disc 2 and / or the sliding shoes 4 enlarged.
  • Fig. 1 further shows that the piston 1 is designed as a closed end sleeve, which is closed by the outer shell 7 of the piston bridge 3.
  • the connection between the piston 1 and the outer shell 7 of the piston 1 is made by welding.
  • Fig. 2 shows a schematic view of a second embodiment of a piston bridge 3, in the representation chosen there without the piston 1.
  • Fig. 2 shows a schematic view of a second embodiment of a piston bridge 3, in the representation chosen there without the piston 1.
  • the inner shell 6 has punctiform or linear elevations 13, which extend in the direction of the outer shell 7.
  • elevations 13 for example can be pre-stamped, so-called flow points for resistance welding are realized, creating a favoring this connection technology is created.
  • the present invention also includes a reciprocating engine, as known for example from DE 197 49 727 C2, but equipped with a device according to the preceding embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

La présente invention concerne un dispositif de couplage d'un piston à un disque annulaire (2), notamment à un disque pivotant ou oscillant ou à un anneau pivotant de l'unité de travail d'une machine à piston de levée, de préférence un compresseur de climatisation de véhicule, doté d'un pont de piston (3) associé au piston (1) et de patins glissants (4) associés au disque annulaire (2), le pont de piston (3) engrenant ou enveloppant au moins en partie le disque annulaire (2) et étant en contact glissant avec le disque annulaire (2) par l'intermédiaire des patins glissants (4), caractérisé en ce que le pont de piston (3) est configuré en deux couches au moins sur le côté orienté vers le piston (1). La présente invention concerne également une machine à piston de levée dotée d'un dispositif selon l'invention.
EP07722535A 2006-07-29 2007-06-19 Dispositif de couplage d'un piston à un disque annulaire Not-in-force EP2049797B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006035149 2006-07-29
PCT/DE2007/001078 WO2008014737A1 (fr) 2006-07-29 2007-06-19 Dispositif de couplage d'un piston à un disque annulaire

Publications (2)

Publication Number Publication Date
EP2049797A1 true EP2049797A1 (fr) 2009-04-22
EP2049797B1 EP2049797B1 (fr) 2012-08-22

Family

ID=38520674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07722535A Not-in-force EP2049797B1 (fr) 2006-07-29 2007-06-19 Dispositif de couplage d'un piston à un disque annulaire

Country Status (7)

Country Link
US (1) US8430018B2 (fr)
EP (1) EP2049797B1 (fr)
JP (1) JP5200017B2 (fr)
KR (1) KR101333858B1 (fr)
DE (1) DE112007001710A5 (fr)
ES (1) ES2389450T3 (fr)
WO (1) WO2008014737A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7245953B1 (en) 1999-04-12 2007-07-17 Masimo Corporation Reusable pulse oximeter probe and disposable bandage apparatii
DE102008039294A1 (de) * 2008-08-22 2010-02-25 Neumayer Tekfor Holding Gmbh Axialkolbenmaschine
DE102014209892A1 (de) * 2014-05-23 2015-11-26 Mahle International Gmbh Axialkolbenmaschine

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1430275A (en) * 1920-09-27 1922-09-26 Almen Crosby Motors Company In Internal-combustion engine
US1837724A (en) * 1929-12-20 1931-12-22 Michell Crankless Engines Corp Crankless mechanism and method of making crankless mechanisms
JPS5683676U (fr) * 1979-11-30 1981-07-06
JPS6115267Y2 (fr) * 1980-05-24 1986-05-12
US4379425A (en) * 1979-11-30 1983-04-12 Diesel Kiki Co., Ltd. Double-acting piston for swash-plate type compressors
JP2956193B2 (ja) * 1990-10-23 1999-10-04 株式会社豊田自動織機製作所 揺動斜板式可変容量圧縮機
KR950003458Y1 (ko) * 1990-11-29 1995-05-02 가부시끼가이샤 도요다지도쇽끼 세이사꾸쇼 요동 사판식 압축기의 피스톤 변위기구
US5228841A (en) * 1991-03-28 1993-07-20 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Variable capacity single headed piston swash plate type compressor having piston abrasion preventing means
KR970003251B1 (ko) * 1992-08-21 1997-03-15 가부시끼가이샤 도요다 지도쇽끼 세이사꾸쇼 용량 가변형 사판식 압축기
TW283186B (fr) * 1993-11-24 1996-08-11 Toyota Automatic Loom Co Ltd
US5380167A (en) * 1994-02-22 1995-01-10 General Motors Corporation Swash plate compressor with unitary bearing mechanism
DE19749727C2 (de) * 1997-11-11 2001-03-08 Obrist Engineering Gmbh Lusten Hubkolbenmaschine mit Schwenkscheibengetriebe
JP2000257555A (ja) * 1999-03-08 2000-09-19 Toyota Autom Loom Works Ltd 圧縮機
JP2001050158A (ja) 1999-08-06 2001-02-23 Toyota Autom Loom Works Ltd 容量固定型片側斜板式圧縮機
DE10010142C2 (de) 2000-03-03 2003-07-17 Luk Fahrzeug Hydraulik Hubkolbenmaschine
JP2002005013A (ja) * 2000-06-27 2002-01-09 Toyota Industries Corp 斜板式圧縮機
US6582200B2 (en) 2000-07-14 2003-06-24 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Swash plate compressor having shoes made of a magnesium-based material
JP2002089439A (ja) * 2000-07-14 2002-03-27 Toyota Industries Corp 斜板式圧縮機
JP2003120522A (ja) * 2001-10-10 2003-04-23 Toyota Industries Corp 流体機械用ピストンおよびその製造方法

Non-Patent Citations (1)

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Title
See references of WO2008014737A1 *

Also Published As

Publication number Publication date
JP2009544886A (ja) 2009-12-17
KR20090034815A (ko) 2009-04-08
WO2008014737A1 (fr) 2008-02-07
JP5200017B2 (ja) 2013-05-15
US20090304530A1 (en) 2009-12-10
DE112007001710A5 (de) 2009-04-16
EP2049797B1 (fr) 2012-08-22
US8430018B2 (en) 2013-04-30
KR101333858B1 (ko) 2013-11-27
ES2389450T3 (es) 2012-10-26

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