Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
  • F15B21/04—Special measures taken in connection with the properties of the fluid
  • F15B21/048—Arrangements for compressed air preparation, e.g. comprising air driers, air condensers, filters, lubricators or pressure regulators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L37/00—Couplings of the quick-acting type
  • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
  • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
  • F16L37/091—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
  • F16L37/0915—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers with a separate member for releasing the coupling

Definitions

• the invention relates to a compressed air maintenance unit, with at least two serviceable by compressed air and each having a device channel interspersed device housing having maintenance devices lined up in a linear concatenation together and are connected both mechanically and by means of their device channels fluidly.
• Compressed air service units are used for the treatment of
• Compressed air used which is supplied from one source of compressed air to one or more compressed air consumers.
• a compressed air service unit consists of several individual compressed air service units, which are supplied by the
• a maintenance device can be embodied, for example, as a pressure regulator device, as a filter device, as a combined filter-pressure regulator device, as a dryer device, as an oiler device or as a valve device usually referred to as a switch-on valve.
• the maintenance devices can be lined up in a linear arrangement direction and can be connected to one another mechanically and also fluidically to form a compressed air service unit comprising two or more maintenance devices.
• a such trained compressed air maintenance unit is known for example from EP 0 862 002 Bl.
• the maintenance devices can be connected to one another in pairs by means of a connection device to which attachment devices formed on the device housings of the maintenance devices abut one another and to which a respective rod-shaped connecting element can be attached transversely to the direction of arrangement of the maintenance devices in order to clamp the attachment tongues and thereby the device housings in the line-up direction.
• This type of connection device is manufacturing technically complex and relatively cumbersome to use.
• a comparably constructed compressed air maintenance unit is known from DE 11 2008 003 945 B4.
• a maintenance unit of the type mentioned in DE 10 2004 051 309 B4 is designed as an electro-pneumatic central unit of a commercial vehicle and contains a plurality of modules which are fluidly connected to one another by means of standard pneumatics connected to one another.
• a compressed air maintenance device which is composed of several functional modules, wherein a functional module a
• DE 103 36 182 B3 describes a compressed air preparation system with a plurality of modules, each having a threadless air inlet opening and air outlet opening, to which a connection plate can be connected, which has a connection thread.
• the connection plate can be fixed by means of a latching connection in the air inlet opening or air outlet opening.
• DE 10 2013 004 629 B3 discloses a compressed air maintenance unit in which the functions of two maintenance devices are combined.
• One of these service devices acts as a shut-off valve and has a frame-shaped connector body, are screwed into the fasteners, which can be connected to a pressure source and a consumer leading compressed air lines.
• the invention has for its object to provide a meh reren maintenance equipment composed compressed air - maintenance unit that can be easily and quickly assembled at low cost structure.
• the plug connection device comprises at least one pipe plug-in coupling containing two in the juxtaposition direction and by securing means positively secured against pulling coupling components, each associated with one of the two interconnected maintenance devices and communicate with the device channel of the respective associated maintenance device, wherein the one of the two coupling components has a plug-in receptacle and the other of the two coupling components has a sealed plug-in socket inserted in the plug-in receptacle.
• the maintenance unit can be equipped with at least one pipe plug coupling designed according to DE 10 2016 205 621 B3.
• the pipe plug-in coupling has two coupling components, one of which has a plug-in receptacle and the other has a tubular plug-in which can be plugged into the plug-in receptacle. has a connecting piece.
• Each coupling component communicates with the device channel formed in one of the service devices to be connected, so that in the nested state there is a fluid connection between the device channels of both maintenance devices.
• the two nested coupling components are secured by securing means of the pipe plug-in coupling form-fitting against pulling apart, so that no additional fastening means are required to secure the assembled maintenance equipment against renewed pulling apart.
• the combined mechanical and fluidic plug-in assembly is very easy to perform, especially because the maintenance equipment must not be accessible from two opposite sides and the handling can take place when mating from one side. Also particularly advantageous is the possibility of tool-free installation of the maintenance devices, so that one can speak of a "plug-and-play" system.
• the device housing are not particularly stressed and need in particular take no fferenvorspannkraft, so that they can be used for their production, a cost-effective material.
• the maintenance devices put together to form the maintenance unit are secured in a form-fitting manner against being pulled apart.
• the securing means block the nested components by a mutual support against intentional or unintentional pulling apart. It is advantageous if, in addition to the connection measure based on the plug connection device, the two maintenance devices are at least substantially immovably supported on their device housings both in the stacking direction and also radially and rotationally relative to an imaginary alignment line running in the line-up direction. In this way, the connector device is relieved and the desired relative position between the two mated service devices remains constant regardless of any external forces acting.
• each pipe plug-in coupling can be combined with a support device designed separately from the pipe plug coupling, which has support means engaging one another in the line-up direction, each associated with one of the two interconnected maintenance devices. Due to the intermeshing support means, in particular at right angles to the juxtaposition direction effective transverse forces or torques are added.
• the one support means may comprise at least one support projection extending in the juxtaposition direction and the other support means comprise at least one support recess open towards the support projection and receiving the support projection.
• a compressed air maintenance unit with two maintenance devices, which are directly attached to one another by the intermediary of the plug connection device and are also connected directly to one another. They are assembled and held together via only a single pipe connector of the connector device, each maintenance unit is equipped with one of the two mating coupling components of the pipe coupling.
• An optionally additionally existing support device expediently contains support means, which are arranged on the two device housings of the interconnected maintenance devices and cooperate in a supporting manner.
• the plug-in connection device may, in an expedient embodiment of the compressed-air maintenance unit, have an inserted between two maintenance devices plug-in adapter having an interspersed by an adapter channel adapter housing.
• the connector device also has two pipe plug-in connectors, one of which is provided for plug-in connection of the plug-in adapter with a service unit and the other to the plug connection of the plug adapter with the other maintenance device. From each pipe plug-in coupling, a coupling component on the service unit and the other, complementary coupling component is arranged on the plug adapter.
• the device housing of the two maintenance devices and the adapter housing of the inserted therebetween plug adapter are held together mechanically, at the same time through the plug adapter through the intermediary of the adapter channel, a fluid connection between the device channels of the two maintenance equipment is made.
• plug-in adapter By using a plug-in adapter, there are several possibilities for placing the different types of coupling components of the pipe plug-in couplings. It is considered to be particularly advantageous to design the two coupling components arranged on the plug-in adapter, which in each case belong to one of the two pipe plug-in couplings, similarly, that is to say either both with a plug-in receptacle or both with a plug-in connection. It is considered to be particularly advantageous to provide the plug-in adapter with two plug-in sockets, which may in particular be formed integrally with the adapter housing, in which case the coupling components, each formed with a plug-in receptacle, are provided on the maintenance devices. This in turn offers the possibility to use a maintenance device outside the compressed air maintenance unit individually and thereby the coupling component provided on it on the model of
• the two maintenance devices are at least substantially immovably supported against each other at least substantially immovably both in the juxtaposition as well as radially and rotationally relative to a running in the juxtaposition imaginary An exertreihungsachse, with the cooperation of the maintenance devices incorporated plug-in adapter.
• each of the two pipe - plug couplings is combined with a separately formed to the respective pipe coupling support device which has intermeshing in the direction Aufrapreihungscardi support means, wherein the pairwise cooperating support means on the one hand on the device housing of a service unit and on the other hand are arranged on the adapter housing of the plug adapter.
• the coupling components which are inserted into one another in a form-locking manner against pulling-apart securing means are expediently integrated into the pipeline coupling, wherein they are in particular a component of the coupling component having the plug-in receptacle.
• the securing means preferably contain a locking ring which is coaxial with the plug-in receptacle and which is expediently fixed axially immovably with respect to the plug-in receptacle and which has a plurality of elastically deformable retaining claws which engage under radial prestress in the outer circumference of the plug-in socket inserted in the plug-in receptacle and thereby bring about the form-fitting support for preventing it from being pulled apart.
• each pipe coupling can be of an insoluble type, so that once a pneumatic compressed air service unit has been put together, it can no longer be easily dismantled.
• the pipe couplings are of manually detachable type is preferred, so that the assembled service devices can be separated from each other again at any time, for example to produce service units with other service device combinations or to replace defective service devices in the event of breakdowns.
• a detachable pipe coupling can be realized preferably in that the coupling component having the plug-in receptacle has a release sleeve axially displaceable relative to the plug-in receptacle, which is manually displaceable for releasing the securing means, so that it acts on the securing means and the same especially lifts off from the embraced by them Einsteckstutzen.
• the maintenance unit is equipped with at least one access window, through which the release sleeve for manual operation by means of a hand tool is accessible.
• the access window is preferably defined by a recess formed in the device housing of at least one maintenance device and / or in the adapter housing of an optionally available plug-in adapter.
• the access window offers the option of using a screwdriver pull through the puller and use it as a lever tool to load the release sleeve.
• the compressed air service unit may be composed of more than two service units assembled in the line-up direction.
• the combined mechanical and fluidic plug connection measures according to the invention can be provided between each successive pair of maintenance devices.
• At least one maintenance device has sides which are opposite one another in the line-up direction via a respective coupling component of a pipeline-type coupling which communicates with the device channel.
• This offers the possibility of attaching to the maintenance device in the line-up direction on the one and / or the other side in each case a further maintenance device according to the inventive plug connection principle.
• this opens up the possibility of only attaching a further maintenance device to the maintenance device on one side and not requiring the coupling required for connection to another maintenance device.
• FIG. 1 shows a preferred first embodiment of the compressed air maintenance unit according to the invention in an isometric view, wherein two maintenance devices are mounted directly to each other,
• FIG. 2 shows the compressed air service unit from FIG. 1 in a separate, not yet connected state of the two maintenance devices, in an isometric representation again,
• FIG. 3 shows the arrangement of Figure 1 in a longitudinal section along section line III-III of Figure 1,
• FIG. 4 shows the arrangement from FIG. 2 in a longitudinal section according to section line IV-IV from FIG. 2,
• FIG. 5 shows a further preferred embodiment of the compressed air maintenance unit according to the invention in an isometric view, wherein two maintenance devices are indirectly attached to one another using an inserted plug adapter between them,
• FIG. 6 shows the compressed air service unit from FIG. 5 in a separate, not yet connected state of the two maintenance devices and the plug-in adapter incorporated in between, again in an isometric view
• 7 shows the arrangement of Figure 5 in a longitudinal section along section line VII-VII
• Figure 8 shows the arrangement of Figure 6 in a longitudinal section along section line VIII-VIII.
• the compressed air service unit 1 illustrated in the drawing with reference to two exemplary embodiments contains at least two maintenance devices 2, 3, which are also designated as the first service device 2 and second service device 3 for better distinction.
• the exemplary compressed air maintenance units 1 each contain exactly two maintenance devices 2, 3.
• the two maintenance devices 2, 3 are strung together in the axial direction of a dash-dot line indicated imaginary An exertreihungsachse 4.
• the axis direction of the alignment axis 4 will also be referred to below as the direction of juxtaposition 5 and is illustrated by the same dot-dash line.
• the two maintenance devices 2, 3 are attached to each other and connected to each other both mechanically and fluidly.
• This connection is realized by means of a combined mechanical and fluidic connector device 6, under the use of which the two maintenance devices 2, 3 are plugged together by a linear mating operation taking place in the line-up direction 5. It is a pure mating process with a pure linear relative movement without superimposed rotary motion, as found in screw.
• the connector device 6 contains as an essential part of at least one pipe coupling 7, which will be referred to in the following for simplicity only as a plug-in coupling 7.
• the pipe plug-in coupling 7 may also be referred to as a hose-line plug-in coupling,
• the plug-in coupling 7 contains two linear in one another
• the plug connection device 6 contains only a single pipe plug-in coupling 7, in which the assignment of the two coupling components 8, 9 to the two maintenance devices 2, 3 is expressed in that the first coupling component 8 on the first maintenance device 2 and the second coupling component 9 is arranged on the second maintenance device 3.
• Each maintenance device 2, 3 has a rigid device housing 12 which carries the relevant coupling component 8, 9.
• the two coupling components 8, 9 engage coaxially with one another, wherein at the same time the two maintenance devices 2, 3 are supported with their device housings 12 in the line-up direction 5.
• Housing support is the pipe coupling 7 combined with a functionally parallel connected support device 13, which is composed of arranged on the device housing 12 of the first maintenance device 2 first support means 14 and thus cooperating cooperating, arranged on the device housing 12 of the second maintenance device 3 second support means 15.
• the plug connection device 6 contains a
• Plug adapter 16 designated intermediate member which in the
• the first coupling component 8 of each plug-in coupling 7 is part of one of the two maintenance devices 2, 3 and arranged by way of example on the device housing 12 of the respective maintenance device 2, 3.
• the cooperating with the respective first coupling component 8 by mating second coupling component 9 is a part of the plug-in adapter 16, which consequently has two second coupling components 9. If one considers the plug-in coupling 7 assigned to the first service device 2, its second coupling component 9 is assigned to the second service device 3 in that it is located on the plug-in adapter 16 mated with the second service device 3. Accordingly, in the second service unit 3 associated plug-in coupling 7, the second coupling component 9 is thereby associated with the first service device 2, that it is located on the mated with the first service device 2 plug-in adapter 16.
• the first and second coupling components 8, 9 of both plug-in couplings 7 are inserted coaxially into one another.
• the device housing 12 of the two maintenance devices 2, 3 are arranged differently than in the embodiment of Figures 1 to 4 spaced from each other. However, these two device housing 12 are based separately on the connector device 6 from each other, with the interposition of the two second coupling components 9-bearing adapter housing 17 of the plug-in adapter sixteenth
• Each of the two plug-in couplings 7 is combined for mutual support of the two maintenance devices 2, 3 with a separate support device 13, which has mutually supporting first and second support means 14, 15, of which the first support means 14 on the device housing 12 and the second support means 15 are arranged on the adapter housing 17.
• Each device housing 12 is penetrated by a fluid channel, which is designated for better distinction as a device channel 18.
• Each device housing 12 has two opposite outer sides, which are referred to as connection sides 22 and to which the device channel 18 opens in each case with one of two mutually opposite connection openings 23.
• the connection sides 22 are oriented in the line-up direction 5 and facing away from each other.
• the adapter housing 17 is also penetrated by a fluid channel, which is referred to better distinction as an adapter channel 24.
• the adapter housing 17 has on the outside two connection sides 25, which are oriented with opposite orientation in the arrangement direction 5 and facing away from each other.
• the adapter channel 24 opens at each connection side 25 with a connection opening 26.
• Each maintenance device 2, 3 has compressed air treatment means 27 switched into the course of the associated device channel 18.
• the type of compressed air treatment means 27 determines the type of the relevant maintenance device 2, 3.
• the compressed air treatment means 27 of the first maintenance device 2 are pressure regulation means 27a, so that the first maintenance device 2 is a pressure regulator 2a.
• the in the operation of the pressure control device 2a through the pressure control means 27a flowing therethrough Compressed air is regulated to an adjustable fluid pressure, which usually means that the compressed air at the outlet from the first service device 2 has a lower fluid pressure than when entering this first service device. 2
• the second maintenance device 3 is formed in the embodiment as a check valve device 3a, in which compressed air treatment means 27 is shut-off valve 27b, which are depending on the operating state in a position to allow passage of fluid through the associated device channel 18 through or shut off.
• the operating state of the shut-off valve device 3 a is possible, for example, by actuation of an actuating element 28 which is accessible outside the device housing 12.
• Each maintenance device 2, 3 can also be of a different type.
• the compressed air treatment means 27 may be designed such that the associated service unit adds one of the compressed air flowing through a lubricating oil
• Oiler device is or a passing through the compressed air drying dryer unit.
• the compressed air treatment means 27 may also be designed for the execution of a Mehrfachfunkt ion, so that, for example, provided within a single maintenance device, a combination of pressure control means and Kondensatabscheideschn.
• the plug-in adapter 16 expediently has no compressed air-treatment agent 27. Its adapter channel 24 can be flowed through by untreated compressed air.
• the coupling components 8, 9 of the pipe plug-in couplings 7 are each arranged on a connection side 22, 25 of the associated device housing 12 or adapter housing 17. This in a way that the coupling tion components 8, 9 of the maintenance devices 2, 3 are in fluid communication with the associated device channel 18 and that the coupling components 8, 9 of the plug-in adapter 16 are in fluid communication with the adapter channel 24. This is preferably realized in such a way that each connection opening 23, 26 is a component of the coupling component 8, 9 assigned to the same connection side 22, 25.
• Plug adapter 16 and the device channel 18 each one of the two maintenance devices 2, 3rd
• the one coupling component has a plug-in opening 34 and designed in the manner of a recess plug-in receptacle 32 and the other one inserted through the insertion opening 34 into the plug-in receptacle 32 of the former coupling component, with assembled compressed air - Maintenance unit 1 inserted tubular Einsteckstutzen 33.
• a sealing ring 35 is expediently arranged axially supported, which is aligned coaxially with respect to the plug-in receptacle 32.
• pipe coupling coupling 7 of the plug-in receptacle 32 immersed male connector 33 projects axially through the sealing ring 35, so that he from the sealing ring 35 with radial Preload is enclosed under seal.
• the sealing ring 35 is on the other hand, under sealing on a plug-in receptacle 32 enclosing Stecêtnumbleme wall 36, which is preferably a part of that device housing 12 or adapter housing 17, which has equipped with the socket 32 coupling component.
• Each pipe plug-in coupling 7 is equipped with securing means 37, by means of which the coupling components 8, 9, which are inserted coaxially into one another, are secured in a form-fitting manner against being pulled apart.
• these securing means 37 are formed exclusively as part of the coupling receptacle 32 having the coupling component, which is the first coupling component 8 in both embodiments.
• the securing means 37 call in the line-up direction 5 a positive support between the two nested coupling components 8, 9, so that the coupling components 8, 9 are locked together in a manner that a pulling apart of the two coupling components 8, 9 in the respect of the insertion opposite Prevent direction.
• the securing means 37 are preferably of a type which make it possible to fit the coupling components 8, 9 into one another without having to cause a separate actuation of the securing means 37.
• the securing means 37 are designed in such a way that they are automatically actuated by one of the two coupling components 8, 9 when the coupling components 8, 9 are inserted into one another, and in their be spent working function activated operating state.
• the securing means 37 expediently include a locking ring 42 which is coaxial with the associated plug-in receptacle 32 and which is supported with an outer ring section axially immovable with respect to the plug-in mounting wall 36 or
• the insertion piece 33 may have an at least substantially smooth outer peripheral surface, wherein the retaining claws 43 are due to a certain sharp edge able to dig into the material of the Einsteckstutzens 33.
• the Einsteckstutzen 33 on the outer circumference also have one or more axially successively arranged annular grooves into which the retaining claws 43 can engage with a Verrie gelungs bin.
• the securing ring 42 is expediently arranged coaxially to the sealing ring 35 and is expediently arranged upstream of the sealing ring 35 in the direction of the insertion opening 34.
• the securing means 37 are preferably of a manually detachable type, so that the plug connection can be removed again at any time if required and the servicing devices 2, 3 combined to the compressed air maintenance unit 1 can be separated again.
• the solubility of the securing means 37 is exemplarily ensured by the fact that the plug-in receptacle 32 having coupling component, for example, the first coupling component 8, via a release sleeve 44 which dives from the open end into the socket 32 coaxially and relative to the socket 32nd or to the Stecêtnähme -Wandung 36 axially reciprocally movable.
• the release sleeve 44 has a retaining ring 42 axially adjacent the front end portion 45 and a protruding from the socket 32, an actuating portion 46 forming the rear end portion.
• the actuating portion 46 is manually, preferably with the aid of a hand tool 48, exerted by an indicated by an arrow pressing force 47, so that the release sleeve 44 is axially displaced into the interior of the socket 32 and acts with its front end portion 45 on the retaining claws 43, the thereby bent radially outward and lifted from the outer periphery of the Einsteckstutzens 33. Subsequently, in the assembled state of the two coupling components 8, 9 projecting through the release sleeve 44 plug-in piece 33 to solve the connector can be easily pulled out.
• each first coupling component 8 has a plug-in receptacle 32 and every second coupling component 9 has a tubular plug-in connection 33. However, this assignment could also be reversed.
• At least one maintenance device 2, 3 can be equipped exclusively with identical coupling components 8 or 9.
• the first service device 2 is equipped with two first clutch components 8, which both have a plug-in receptacle 32.
• the second service unit 3 has two coupling components 8, 9 of different types, namely a mating with the first service unit 2 second coupling component 9, which has a Einsteckstutzen 33, and a first coupling component 8, which has a plug-in receptacle 32 and part of another Pipe plug-in coupling 7 may be that can be used to grow a not shown third maintenance device.
• both maintenance devices 2, 3 are each equipped with two first coupling components 8, which have a plug-in receptacle 32.
• the complementary, each equipped with a plug-in connection 33 second coupling components 9 are provided on the plug-in adapter 16, which is therefore plugged for mating a compressed air maintenance unit with each of its two Einsteckstutzen 33 in a socket 32 of one of the two maintenance devices 2, 3.
• the two device housing 12 In the assembled state to a compressed air maintenance unit 1 state, the two device housing 12 based on the already mentioned above, at least one support device 13 from each other. It is a direct support between two device housings 12, when according to the embodiment of Figures 1 to 4, the connector device 6 has no plug-in adapter 16. A medium-sized Re support between the two maintenance devices 2, 3 is present when the connector device 6 according to the embodiment of Figures 5 to 8 has a built-in between the two device housing 12 plug-in adapter 16.
• the two directly cooperating support means 14, 15 are formed on two device housings 12 or on a device housing 12 and on the adapter housing 17.
• the explanation of the support device 13 should be as far as possible uniform as follows, wherein one of the supported housing as the first housing 52 and the other of the supported housing is referred to as the second housing 53.
• the device housing 12 correspond Both maintenance devices 2, 3 each have a first housing 52, while the adapter housing 17 of the plug-in adapter 16 corresponds to a second housing 53.
• the maintenance devices 2, 3 combined in the compressed air service unit 1 are at least in addition to the connection measure via the housings 52, 53 in the line-up direction 5 as well as radially and rotationally with respect to the imaginary sequence line 4 essentially and preferably supported one another immovably.
• the support of the support device 13 which acts in the line-up direction 5 is opposite to the support which is produced by the positive-locking action of the securing means 37.
• the two axial support surfaces 14a, 15a are expediently formed by an end face 54 extending around the line of arrangement 4 on the relevant connection side 22, 25 of the associated housing 52, 53.
• This end face 54 may be closed in the shape of a frame or may also be subdivided into individual surface sections in the longitudinal direction about the alignment axis 4.
• the first support means 14 further comprise at least one axially open towards the second housing 53 toward Ab Supporting recess 14b, the at least one arranged on the second housing 5, to the second support means 15 belonging from supporting projection 15b is opposite.
• the housing 52, 53 engage the substanceslie ing support recesses 14 b and support projections 15 b into each other, wherein they are supported at right angles to the An exertreihungscardi 5 to each other. This results in egg ne by radial positive engagement of the intermeshing Abstützvertiefept 14b and AbstützvorSprünge 15b achieved centering of the juxtaposed first and second Ge housing 52, 53.
• Each support projection 15b is supported on the radially inwardly oriented inner surface of him record the support recess 14b, so that the interposed with the support means 14, 15 housings 52, 53 are relatively immobile supported in a mutually perpendicular to the direction of stacking 5 level to each other and also also with respect to the An exertreihungsachse. 4
• the support recess 14b is expediently recessed axially relative to the associated first axial support surface 14a.
• the at least one support projection 15b expediently projects in the direction of arrangement 5 with respect to the associated second axial support surface 15a.
• the two coupling components 8, 9 of each pipe plug-in coupling 7 are preferably matched to the corresponding Ab support means 13, 14, that the two coupling components 8, 9 when mating the housing 52, 53 simultaneously engage with each other as the support recess 14 b and the supporting projection 15b assigned to it.
• the arrangement of the first and second support means 14, 15 with respect to the first and second housing 52, 53 may also be reversed.
• This annular recess 55 is able, in the assembled state of two housings 52, 53 to receive the plug-in connection 33 plugged-on, provided with a plug-in receptacle 32 first coupling component 8.
• particularly short dimensions can be achieved in the stacking direction 5.
• a comparable annular recess 56 may be disposed on at least one of the housings 52, 53 around the first coupling component 8 having the plug-in receptacle 32, which is likewise axially open.
• At least one access window 57 is formed, which allows access from the outside into a housing interior 58 in which at least one release sleeve 44th located.
• the previously mentioned above hand tool 48 can be introduced from the outside to act on the release sleeve 44 for the purpose of deactivating the securing means 37.
• a hand tool 48 which is inserted through an access window 57 and which, for example, is a screwdriver. Benzieher act can be supported on an edge portion 62 of the access window 57 to act upon subsequent imposition of an indicated by an arrow actuating force 63 with leverage according to arrow 47 on the operating portion 56 of the release sleeve 44.
• the access window 57 is preferably formed as a wall opening of the wall of the adapter housing 17. In a plug connection device 6 without plug-in adapter 16, the access window 57 is expediently located on only one of the two device housings 12.
• the access window 57 is realized in particular in that in one of the housing 12, 17, an axially open slot is formed, which is bounded on the open side of the attached housing 12, 17.
• the above-mentioned housing interior 58 is expediently composed of the mutually merging annular recesses 55, 56 of the juxtaposed housing 52, 53 together.
• the insertion pieces 33 are expediently formed integrally with the associated housing 52, 53.
• the plug-in receiving walls 36 are also preferably one-piece components of the associated housing 52, 53.
• At least one and preferably each maintenance device 2, 3 is preferably equipped on both connection sides 22 with a coupling component 8 or 9 of a pipe coupling 7. This is true even if only one of these two coupling components 8 or 9 is used for mating with another maintenance device 2, 3.
• Unused coupling component 8 9 can be used to connect a rigid or flexible fluid line, with which the compressed air maintenance unit 1 can be connected to a compressed air source or to at least one consumer.
• the hereby optionally used for use first coupling component 8 expediently has a plug-in receptacle 32 for insertion of the aforementioned fluid line.

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• Mechanical Engineering (AREA)
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• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)

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• 2017
  • 2017-08-17 DE DE102017214350.9A patent/DE102017214350B4/de active Active
• 2018
  • 2018-07-12 WO PCT/EP2018/068957 patent/WO2019034341A1/de active Application Filing
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