EP2049797A1 - Device for coupling a piston to an annular disc - Google Patents

Device for coupling a piston to an annular disc

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)
French (fr)
Other versions
EP2049797B1 (en
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/en
Application granted granted Critical
Publication of EP2049797B1 publication Critical patent/EP2049797B1/en
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

A device for coupling a piston (1) to an annular disc (2), in particular to a captive C-washer/swash plate or to a pivot ring of the working unit of a reciprocating-piston machine, preferably of a compressor of the air-conditioning system of a motor vehicle, having a piston bridge (3) which is assigned to the piston (1) and sliding shoes (4) which are assigned to the annular disc (2), wherein the piston bridge (3) engages at least partially around or over the annular disc (2) and is in sliding engagement with the annular disc (2) by means of the sliding shoes (4), is characterized in that the piston bridge (3) is of two-layer design at least on the side facing towards the piston (1). The invention also relates to a reciprocating-piston machine having a device according to the invention.

Description

Vorrichtung zum Ankoppeln eines Kolbens an eine Ringscheibe Device for coupling a piston to an annular disc
Die Erfindung betrifft eine Vorrichtung zum Ankoppeln eines Kolbens an eine Ringscheibe, insbesondere an eine Schwenk-/Schrägscheibe oder an einen Schwenkring der Arbeitseinheit einer Hubkolbenmaschine, vorzugsweise eines Kompressors der Klimaanlage eines Kraftfahrzeugs, mit einer dem Kolben zugeordneten Kolbenbrücke und zwischen der Ringscheibe und der Kolbenbrücke wirkenden Gleitschuhen, wobei die Kolbenbrücke die Ringscheibe zumindest teilweise um- bzw. übergreift und über die Gleitschuhe in Gleiteingriff mit der Ringscheibe steht.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.
Die gattungsbildende Vorrichtung wird üblicherweise in Hubkolbenmaschinen verwendet, die seit vielen Jahren in den unterschiedlichsten Ausführungen und zu unterschiedlichsten Verwendungszwecken bekannt sind. Bei einer solchen Hubkolbenmaschine kann es sich beispielsweise um einen Kompressor handeln, so beispielsweise um einen Kompressor für die Klimaanlage eines Kraftfahrzeugs. Solche Kompressoren werden meist auch als Klimakompressoren bezeichnet und umfassen ein Gehäuse, welches eine von außerhalb angetriebene Verdichter- bzw. Pumpeneinheit einschließt. Die beispielsweise als Axialkolbenmaschine ausgebildete Verdichtereinheit umfasst wiederum mehrere Kolben, die in einem Zylinderblock hin und her bewegbar sind. Bei Drehung einer meist als Ringscheibe ausgebildeten Schrägscheibe oder beim Schwenken einer entsprechenden Schwenkscheibe werden die Kolben hin und her bewegt. Das Gehäuse ist üblicherweise geschlossen.The generic device is commonly used in reciprocating engines, which are known for many years in a variety of designs and for various uses. 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.
Schwenkscheibenkompressoren oder Schwenkringkompressoren sind in den unterschiedlichsten Ausführungen hinlänglich bekannt. Lediglich beispielhaft wird dazu auf die DE 44 41 721 A1 sowie auf die DE 100 10 142 C 2 verwiesen.Schwenkscheibenkompressoren 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.
Hinsichtlich weiterer konstruktiver Details sei auf die DE 19749 727 C2 verwiesen.With regard to further constructive details, reference is made to DE 19749 727 C2.
Bei der aus der DE 197 49 727 C2 bekannten Hubkolbenmaschine ist eine kreisrunde, ringartige Schwenkscheibe, auch Schwenkring genannt, vorgesehen, die in ihrer Neigung zur Maschinenwelle verstellbar ist. Die Schwenkscheibe wird über die Maschinenwelle zur Drehung angetrieben. Dies erfolgt über einen auf der Maschinenwelle axial geführten Schiebekörper sowie über einen mit Abstand von der Maschinenwelle angeordneten Mitnehmerbolzen. Die Kolben weisen Gelenkanordnungen auf, an denen die Schwenkscheibe in Gleiteingriff steht. Im Konkreten umfasst die bekannte Hubkolbenmaschine eine Arbeitseinheit mit mehreren entsprechend angetriebenen Kolben, wobei die Kolben in Zylinderbohrungen geführt sind und über besondere Kopplungselemente der Schwenk-/Taumelbewegung der Ringscheibe folgen und so ihren Hub ausführen.In the known from DE 197 49 727 C2 reciprocating a circular, ring-like swash plate, also called swivel ring, is provided, which is adjustable in its inclination to the machine shaft. 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. Specifically, 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.
Die bei der bekannten Hubkolbenmaschine verwendete gattungbildende Vorrichtung ist üblicherweise aus relativ dickem Blech hergestellt, wodurch sich bei hinreichend großem Freigang für Schuhe und Schwenkring - zwangsweise - eine erhebliche Baugröße ergibt. Darüber hinaus sind zur Vergrößerung des Freigangs für die Schuhe und den Schwenkring nicht selten Prägungen erforderlich, die das Material der Kolbenbrücke nach außen verdrängen, wodurch sich abermals eine Vergrößerung des Bauraums ergibt, nämlich eine radiale Bauraumvergrößerung. All dies wirkt einer heutzutage stets anzustrebenden Miniaturisierung, das heißt Verringerung des Bauraums, geradezu diametral entgegen.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. In addition, 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.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zum Ankoppeln eines Kolbens an eine Ringscheibe, insbesondere an eine Schwenk-/Schrägscheibe oder an einen Schwenkring der Arbeitseinheit einer Hubkolbenmaschine, vorzugsweise eines Kompressors der Klimaanlage eines Kraftfahrzeugs, derart auszugestalten und weiterzubilden, dass bei hinreichend großem Freigang für die Schuhe und den Schwenkring ein geringstmöglicher Bauraum bei hinreichender Festigkeit realisierbar ist. Des Weiteren soll eine Hubkolbenmaschine mit einer entsprechenden Vorrichtung angegeben werden.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. Furthermore, a reciprocating engine should be specified with a corresponding device.
Die voranstehende Aufgabe wird durch die Merkmale der nebengeordneten Patentansprüche 1 und 16 gelöst, wobei die mit dem nebengeordneten Patentanspruch 16 beanspruchte Hubkolbenmaschine die erfindungsgemäße Vorrichtung nach Patentanspruch 1 umfasst.The above object is solved by the features of the independent claims 1 and 16, wherein the claimed with the independent claim 16 reciprocating engine comprises the device according to claim 1 of the invention.
Gemäß Patentanspruch 1 ist die gattungbildende Vorrichtung dadurch gekennzeichnet, dass die Kolbenbrücke zumindest auf der dem Kolben zugewandten Seite zweilagig ausgeführt ist.According to claim 1, 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.
Erfindungsgemäß ist erkannt worden, dass man eine ausreichende Biegesteifigkeit nicht nur durch Verwendung dicker Bleche realisieren kann. Vielmehr lässt sich eine ausreichende Biegesteifigkeit der Kolbenbrücke dadurch erreichen, dass man diese zumindest auf der dem Kolben zugewandten Seite, dass heißt auf der Druckseite, zweilagig ausführt, nämlich unter Verwendung wesentlich dünnerer Bleche, die gemeinsam eine ausreichende Biegesteifigkeit generieren. Die Verwendung mindestens zweier Bleche zur Realisierung einer zweilagigen Ausgestaltung des Gleitschuhs hat den weiteren Vorteil, dass sich mit jedem der Bleche wesentlich engere Biegeradien realisieren lassen, wodurch sich ein weiterreichender Freigang für die Schuhe und den Schwenkring im Inneren des Gleitschuhs ergibt. Außerdem lassen sich in der inneren Blechlage Ausformungen bzw. Ausstanzungen realisieren, wodurch sich ein Prägeprozess durch Materialverdrängung nach außen regelmäßig vermeiden lässt. Eine Bauraumvergrößerung ist dadurch ebenso vermieden.According to the invention, it has been recognized that sufficient bending stiffness can not be achieved only by using thick sheets. Rather, 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. In addition, can be realized in the inner sheet metal formations or punched, which can be a stamping process by material displacement to the outside regularly avoided. An increase in space is thereby avoided as well.
In vorteilhafter Weise ist das Material der Kolbenbrücke als zweilagiges Blech ausgeführt, wobei es durchaus auch denkbar ist, die Kolbenbrücke mit drei- oder mehrlagige Blechen auszubilden, und zwar entsprechend den jeweiligen Anforderungen.Advantageously, 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.
Im Konkreten umfasst die Kolbenbrücke eine innere Schale und eine äußere Schale, wobei zwischen der inneren Schale und der äußeren Schale eine oder mehrere Zwischenschalen vorgesehen sein können. Die Zwischenschalen können wiederum als Teilschale oder als Vollschale ausgeführt sein. Durch entsprechende konstruktive Maßnahmen lassen sich die einzelnen Bereiche der Kolbenbrücke unterschiedlich stark und mit unterschiedlichen Ausformungen, Ausnehmungen, Ausstanzungen, etc. ausgestalten.Concretely, 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. By appropriate design measures, the individual areas of the piston bridge can be designed differently strong and with different shapes, recesses, punched, etc.
In besonders vorteilhafter Weise erstreckt sich die äußere Schale von der dem Kolben zugewandten Seite, das heißt vom Kolben aus, über eine Seitenfläche bis an oder über die dem Kolben abgewandte Seite der Kolbenbrücke. Eine solche Ausgestaltung bringt den großen Vorteil mit sich, dass die Kolbenbrücke auf der Druckseite, dass heißt auf der dem Kolben zugewandten Seite, zumindest zweilagig ausgebildet ist. Auf der Saugseite, das heißt auf der dem Kolben gegenüberliegenden bzw. abgewandten Seite, ist eine einlagige Ausgestaltung der Kolbenbrücke hinreichend, wodurch sich das Gewicht der Kolbenbrücke reduzieren lässt.In a particularly advantageous manner, 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. Such a configuration has the great advantage that the piston bridge on the pressure side, that is, on the side facing the piston, at least two layers is formed. On the suction side, that is, on the opposite side of the piston, a single-layer design of the piston bridge is sufficient, which can reduce the weight of the piston bridge.
Des Weiteren ist es möglich, dass die innere Schale und ggf. die äußere Schale auf gegenüberliegenden Seiten nach außen geprägte oder gebogene Bereiche einer Druckpfanne (auf der dem Kolben zugewandten Seite) und einer Saugpfanne (auf der dem Kolben abgewandte Seite) aufweist, die zur Aufnahme der Gleitschuhe dienen. Durch Zusammenwirken der Druck- und Saugpfannen mit den Gleitschuhen lässt sich eine ideale Gelenkanordnung realisieren, wobei die Kolben über die Gelenkanordnungen mit der Schwenkscheibe in Eingriff stehen. Bereits zuvor ist angedeutet worden, dass der Bereich der Saugpfanne, das heißt die Saugseite des Gleitschuhs, einlagig ausgeführt sein kann, wobei die Saugpfanne vorzugsweise durch die innere Schale gebildet ist.Furthermore, it is possible that 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. By interaction of the pressure and suction cups with the sliding shoes, an ideal joint arrangement can be realized, wherein the pistons are engaged with the swash plate via the joint arrangements. It has already been indicated that the region of the suction cup, that is to say the suction side of the sliding shoe, can be designed as a single layer, wherein the suction cup is preferably formed by the inner shell.
Des Weiteren ist es denkbar, dass die innere Schale, vorzugsweise in einer Seitenfläche, eine Ausnehmung, vorzugsweise eine Ausstanzung, aufweist, die den Raum innerhalb der Kolbenbrücke und somit den Freigang für die Ringscheibe und/oder die Gleitschuhe um die Wanddicke der inneren Schale vergrößert. Diese Maßnahme hat den großen Vorteil, dass eine Prägung der gesamten Kolbenbrücke mit einer Materialverdrängung nach außen nicht erforderlich ist, und somit eine ungewollte Vergrößerung des Bauraums in radialer Richtung wei- testgehend vermieden ist.Furthermore, it is conceivable that 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.
Die beiden oder mehreren Schalen können nahezu formschlüssig aneinander angeordnet sein. Dabei ist es auch denkbar, eine Art kraftschlüssige Verbindung zwischen den beiden Schalen zu realisieren, so dass die Schalen aufgrund einer materialspezifischen Vorspannung mechanisch miteinander verbunden sind. Alternativ oder zusätzlich ist es denkbar, dass die Schalen klebetechnisch oder mittels Nieten miteinander verbunden sind.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.
In besonders vorteilhafter Weise sind die Schalen schweißtechnisch miteinander verbunden. Zur Begünstigung einer solchen schweißtechnischen Verbindung, insbesondere zur Begünstigung der Verbindung mittels Widerstandsschweißen, weist zumindest eine der zu verbindenden Schalen, vorzugsweise die innere Schale, punkt- oder linienförmige Erhöhungen, vorzugsweise prägetechnisch hergestellte Erhöhungen, auf, die das Widerstandsschweißen gegenüber der gegenüberliegenden Schale begünstigen. Der dabei zwischen den Schalen entstehende Raum gestattet eine weiterreichende Prägung der inneren Schale zur Vergrößerung des Raumes innerhalb der Kolbenbrücke und somit zur Vergrößerung des Freigangs für die Schuhe und/oder den Schwenkring.In a particularly advantageous manner, the shells are connected by welding technology. To favor such a welding connection, in particular for promoting the connection by means of resistance welding, 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.
Des Weiteren sei angemerkt, dass die Kolbenbrücke über deren äußere Schale an den Kolben angeschweißt sein kann, wobei jede sonst nur denkbare Verbindungstechnik möglich ist. Der Kolben kann als Hohlkörper im Sinne einer endseitig geschlossenen Hülse ausgeführt sein, wobei die äußere Schale der Kolbenbrücke zum Verschluss der den Kolben bildenden Hülse dienen kann.It should also be noted that 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.
Es gibt nun verschiedene Möglichkeiten, die Lehre der vorliegenden Erfindung in vorteilhafter Weise auszugestalten und weiterzubilden. Das ist einerseits auf die dem Patentanspruch 1 nachgeordneten Patentansprüche und andererseits auf die nachfolgende Erläuterung zweier bevorzugter Ausführungsbeispiele der Erfindung anhand der Zeichnung zu verweisen. In Verbindung mit der Erläuterung der bevorzugten Ausführungsbeispiele der Erfindung anhand der Zeichnung werden auch im Allgemeinen bevorzugte Ausgestaltungen und Weiterbildungen der Lehre erläutert. In der Zeichnung zeigenThere are now various possibilities for designing and developing the teaching of the present invention in an advantageous manner. This is on the one hand to the the patent claim 1 subordinate claims and on the other hand to refer to the following explanation of two preferred embodiments of the invention with reference to the drawing. In conjunction with the explanation of the preferred embodiments of the invention with reference to the drawings, also generally preferred embodiments and developments of the teaching are explained. In the drawing show
Fig. 1 in einer schematischen Ansicht, geschnitten, ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung, umfassend einen Kolben mit Kolbenbrücke undFig. 1 in a schematic view, cut, an embodiment of a device according to the invention comprising a piston with piston bridge and
Fig. 2 in einer schematischen Ansicht ein zweites Ausführungsbeispiel einer Kolbenbrücke mit zueinander beabstandeten Schalen.Fig. 2 is a schematic view of a second embodiment of a piston bridge with spaced apart shells.
Fig. 1 zeigt ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung zum Ankoppeln eines Kolbens 1 an eine in der Figur lediglich angedeutete Ringscheibe 2 der Arbeitseinheit einer Hubkolbenmaschine. Hinsichtlich der hier nicht gezeigten Merkmale einer Hubkolbenmaschine sei ausdrücklich auf die eingangs bereits genannte DE 197 49 727 C2, dort insbesondere die Figuren 1 und 2 nebst dazugehörender Beschreibung, verwiesen. Einer einfachen Darstellung halber wird hier auf die Darstellung einer kompletten Hubkolbenmaschine verzichtet, zumal es um die Vorrichtung zum Ankoppeln eines Kolbens an eine entsprechende Ringscheibe geht.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. With regard to the features of 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. For the sake of simplicity, 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.
In Fig. 1 ist angedeutet, dass der Kolben 1 in Gleiteingriff mit der Ringscheibe 2 steht, wobei dem Kolben 1 eine Kolbenbrücke 3 zugeordnet ist. Zwischen der Ringscheibe 2 und der Kolbenbrücke 3 wirken Gleitschuhe 4, wobei die Kolbenbrücke 3 die Ringscheibe 2 endseitig um bzw. übergreift und wobei der Kolben 1 über die Gleitschuhe 4 und die Kolbenbrücke 3 in Gleiteingriff mit der Ringscheibe 2 steht.In 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.
Erfindungsgemäß ist die Kolbenbrücke 3 zumindest auf der dem Kolben 1 zugewandten Seite, das heißt auf der Druckseite 5, zweitägig ausgeführt.According to the invention, the piston bridge 3, at least on the side facing the piston 1, that is, on the pressure side 5, executed two days.
Im Konkreten ist bei dem in Fig. 1 gezeigten Ausführungsbeispiel das Material der Kolbenbrücke 3 als zweilagiges Blech ausgeführt, wobei die Kolbenbrücke 3 eine innere Schale 6 und eine äußere Schale 7 umfasst. Fig. 1 lässt des Weiteren erkennen, dass die äußere Schale 7 von der dem Kolben 1 zugewandten Seite über eine Seitenfläche 11 hinweg bis an den Rand der gegenüberliegenden Seite, das heißt bis an den Rand der Saugseite 8, reicht. Somit ist die Kolbenbrücke 3 auf der weniger belasteten Saugseite 8 einlagig ausgeführt, wodurch sich eine Materialeinsparung zur Gewichtsreduktion ergibt.Specifically, in the exemplary embodiment shown in FIG. 1, 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. Thus, the piston bridge 3 is single-layered on the less loaded suction side 8, resulting in a material saving for weight reduction.
Fig. 1 lässt des Weiteren erkennen, dass die innere Schale 6 und - jedenfalls auf der Druckseite 5 - auch die äußere Schale 7 auf gegenüberliegenden Seiten nach außen geprägte bzw. gebogene Bereiche zur Bildung einer Druckpfanne 9 und einer Saugpfanne 10 aufweist. Die Druckpfanne 9 und die Saugpfanne 10 dienen gemeinsam zur Aufnahme der Gleitschuhe 4 und somit zum Gleiteingriff für die Ringscheibe 2.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.
Wie bereits zuvor ausgeführt, ist der Bereich der Saugpfanne 10 einlagig ausgeführt, nämlich aufgrund der dort lediglich vorgesehenen inneren Schale 6. Auf der gegenüberliegenden Seite, das heißt auf der Druckseite 5, ist die Druckpfanne 9 zweilagig gebildet, nämlich sowohl durch die innere Schale 6 als auch durch die äußere Schale 7, um nämlich entsprechend Kräfte aufnehmen zu können.As already stated above, the region of the suction cup 10 is designed as a single layer, namely due to the inner shell 6 provided there. On the opposite side, that is on the pressure side 5, 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 zeigt des Weiteren deutlich, dass in der Seitenfläche 11 , in der inneren Schale 6, eine Ausnehmung 12 in Form einer Ausstanzung vorgesehen ist, die den Raum innerhalb der Kolbenbrücke 3 und somit den Freigang für die Ringscheibe 2 und/oder die Gleitschuhe 4 vergrößert. Durch diese Maßnahme ist eine Erweiterung des Raumes innerhalb der Kolbenbrücke 3 durch eine nach außen gerichtete Prägung mit dem Nachteil einer radialen Erweiterung der Kolbenbrücke 3 wirksam vermieden.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. By this measure, an expansion of the space within the piston bridge 3 is effectively avoided by an outward stamping with the disadvantage of a radial extension of the piston bridge 3.
Fig. 1 zeigt des Weiteren, dass der Kolben 1 als endseitig geschlossene Hülse ausgeführt ist, die durch die äußere Schale 7 der Kolbenbrücke 3 geschlossen ist. Die Verbindung zwischen dem Kolben 1 und der äußeren Schale 7 des Kolbens 1 ist schweißtechnisch hergestellt.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 zeigt in schematischer Ansicht ein zweites Ausführungsbeispiel einer Kolbenbrücke 3, in der dort gewählten Darstellung ohne den Kolben 1. Außerdem ist dort auf weitere Details verzichtet, zumal es dabei lediglich um die Anordnung zwischen der inneren Schale 6 und der äußeren Schale 7 geht.Fig. 2 shows a schematic view of a second embodiment of a piston bridge 3, in the representation chosen there without the piston 1. In addition, there is dispensed further details, especially since it is only about the arrangement between the inner shell 6 and the outer shell 7 ,
Im Konkreten weist die innere Schale 6 punkt- oder linienförmige Erhöhungen 13 auf, die sich in Richtung der äußeren Schale 7 erstrecken. Durch diese Erhöhungen 13, die beispielsweise vorgeprägt sein können, werden sogenannte Durchflussstellen für das Widerstandsschweißen realisiert, wodurch eine Begünstigung dieser Verbindungstechnik geschaffen ist.Specifically, the inner shell 6 has punctiform or linear elevations 13, which extend in the direction of the outer shell 7. By these 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.
Die vorliegende Erfindung umfasst außerdem eine Hubkolbenmaschine, wie sie beispielsweise aus der DE 197 49 727 C2 bekannt ist, jedoch ausgestattet mit einer Vorrichtung entsprechend den voranstehenden Ausführungen.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.
Schließlich sei angemerkt, dass die voranstehend erörterten Ausführungsbeispiele lediglich der Erörterung der beanspruchten Lehren dienen, diese jedoch nicht auf die Ausführungsbeispiele einschränken. Finally, it should be noted that the embodiments discussed above merely serve to discuss the claimed teachings, but do not limit them to the embodiments.
BezuqszeichenlisteLIST OF REFERENCES
Kolbenpiston
Ringscheibewasher
Kolbenbrückepiston bridge
Gleitschuh (der Ringscheibe)Sliding shoe (the ring disc)
Druckseite (der Kolbenbrücke) innere Schale äußere SchalePressure side (the piston bridge) inner shell outer shell
Saugseite (der Kolbenbrücke)Suction side (the piston bridge)
Druckpfannepressure pan
Saugpfannevacuum pan
Seitenflächeside surface
Ausnehmungrecess
Erhöhung (an der inneren Schale) Increase (on the inner shell)

Claims

Patentansprüche claims
1. Vorrichtung zum Ankoppeln eines Kolbens (1) an eine Ringscheibe (2), insbesondere an eine Schwenk-/Schrägscheibe oder an einen Schwenkring der Arbeitseinheit einer Hubkolbenmaschine, vorzugsweise eines Kompressors der Klimaanlage eines Kraftfahrzeugs, mit einer dem Kolben (1) zugeordneten Kolbenbrücke (3) und der Ringscheibe (2) zugeordneten Gleitschuhen (4), wobei die Kolbenbrücke (3) die Ringscheibe (2) zumindest teilweise um- bzw. übergreift und über die Gleitschuhe (4) in Gleiteingriff mit der Ringscheibe (2) steht, d a d u r c h g e k e n n z e i c h n e t, dass die Kolbenbrücke (3) zumindest auf der dem Kolben (1) zugewanden Seite mindestens zweilagig ausgeführt ist.1. Device for coupling a piston (1) to an annular disc (2), 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 (1) associated with the piston bridge (3) and the annular disc (2) associated with sliding shoes (4), wherein the piston bridge (3) at least partially surrounds the annular disc (2) and over the sliding shoes (4) in sliding engagement with the annular disc (2), characterized in that the piston bridge (3) at least on the piston (1) zugewanden side is performed at least two layers.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass das Material der Kolbenbrücke (3) als zweilagiges Blech ausgeführt ist.2. Apparatus according to claim 1, characterized in that the material of the piston bridge (3) is designed as a two-layer sheet.
3. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass das Material der Kolbenbrücke (3) als drei- oder mehrlagiges Blech ausgeführt ist.3. A device according to claim 1, characterized in that the material of the piston bridge (3) is designed as a three- or multi-layer sheet metal.
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Kolbenbrücke (3) eine innere Schale (6) und eine äußere Schale (7) umfasst.4. Device according to one of claims 1 to 3, characterized in that the piston bridge (3) comprises an inner shell (6) and an outer shell (7).
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass zwischen der inneren Schale (6) und der äußeren Schale (7) eine oder mehrere Zwischenschale(n) vorgesehen ist/sind und dass die Zwischenschale(n) als Teilschale oder als Vollschale ausgebildet ist/sind.5. The device according to claim 4, characterized in that between the inner shell (6) and the outer shell (7) one or more intermediate shell (s) is / are provided and that the intermediate shell (s) is formed as a partial shell or as a solid shell /are.
6. Vorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass sich die äußere Schale (7) von der dem Kolben (1) zugewandten Seite über eine Seitenfläche (11) bis an die oder über die dem Kolben (1) abgewandte Seite der Kolbenbrücke (3) erstreckt.6. Apparatus according to claim 4 or 5, characterized in that the outer shell (7) of the said piston (1) facing side via a side surface (11) to or over the piston (1) facing away from the piston bridge (3) extends.
7. Vorrichtung nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die innere Schale (6) und ggf. die äußere Schale (7) auf gegenüberliegenden Seiten nach außen geprägte oder gebogene Bereiche zur Bildung einer Druckpfanne (9) und einer Saugpfanne (10) aufweist, die zur Aufnahme der Gleitschuhe (4) dienen. 7. Device according to one of claims 4 to 6, characterized in that the inner shell (6) and optionally the outer shell (7) on opposite sides outwardly embossed or curved portions for forming a pressure pan (9) and a suction cup ( 10), which serve to receive the sliding shoes (4).
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der Bereich der Saugpfanne (10) einlagig ausgeführt ist, wobei die Saugpfanne (10) durch die innere Schale (6) gebildet ist.8. The device according to claim 7, characterized in that the region of the suction cup (10) is designed in one layer, wherein the suction cup (10) through the inner shell (6) is formed.
9. Vorrichtung nach einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, dass die innere Schale (6), vorzugsweise in einer Seitenfläche (11), eine Ausnehmung (12), vorzugsweise eine Ausstanzung, aufweist, die den Raum innerhalb der Kolbenbrücke (3) und somit den Freigang für die Ringscheibe (2) und/oder die Gleitschuhe (4) vergrößert.9. Device according to one of claims 4 to 8, characterized in that the inner shell (6), preferably in a side surface (11), a recess (12), preferably a punched-out, comprising the space inside the piston bridge (3 ) and thus increases the clearance for the annular disc (2) and / or the sliding shoes (4).
10. Vorrichtung nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, dass die Schalen (6,7) klebetechnisch miteinander verbunden sind.10. Device according to one of claims 4 to 9, characterized in that the shells (6,7) are bonded together by adhesive bonding.
11. Vorrichtung nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, dass die Schalen (6,7) mittels Nieten miteinander verbunden sind.11. Device according to one of claims 4 to 9, characterized in that the shells (6,7) are interconnected by means of rivets.
12. Vorrichtung nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, dass die Schalen (6,7) schweißtechnisch miteinander verbunden sind.12. Device according to one of claims 4 to 9, characterized in that the shells (6,7) are connected to each other by welding.
13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass eine der zu verbindenden Schalen (6,7), vorzugsweise die innere Schale (6), punkt- oder linienförmige Erhöhungen (13), vorzugsweise prägetechnisch hergestellte Erhöhungen (13), aufweist, die das Widerstandsschweißen gegenüber der gegenüberliegenden Schale (7) begünstigen.13. The apparatus according to claim 12, characterized in that one of the shells to be connected (6,7), preferably the inner shell (6), point or line-shaped elevations (13), preferably embossed technically produced elevations (13), which favor the resistance welding opposite the opposite shell (7).
14. Vorrichtung nach einem der Ansprüche 4 bis 13, dadurch gekennzeichnet, dass die Kolbenbrücke (3) über deren äußere Schale (7) an den Kolben (1) angeschweißt ist.14. Device according to one of claims 4 to 13, characterized in that the piston bridge (3) via the outer shell (7) to the piston (1) is welded.
15. Vorrichtung nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass der Kolben (1) als Hohlkörper im Sinne einer endseitig geschlossenen Hülse ausgeführt ist.15. Device according to one of claims 1 to 14, characterized in that the piston (1) is designed as a hollow body in the sense of a closed-end sleeve.
16. Hubkolbenmaschine, insbesondere Kompressor der Klimaanlage eines Kraftfahrzeugs, g e k e n n z e i c h n e t durch eine Vorrichtung zum Ankoppeln eines Kolbens (1 ) an eine Ringscheibe (2), insbesondere an eine Schwenk-/Schrägscheibe oder an einen Schwenkring der Arbeitseinheit der Hubkolbenmaschine, nach einem der Ansprüche 1 bis 15. 16. A reciprocating piston engine, in particular compressor of the air conditioning system of a motor vehicle, characterized by a device for coupling a piston (1) to an annular disc (2), in particular to a swivel / swash plate or to a swivel ring of the working unit of the reciprocating engine, according to one of claims 1 to 15.
EP07722535A 2006-07-29 2007-06-19 Device for coupling a piston to an annular disc Not-in-force EP2049797B1 (en)

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