EP3806977A2 - Interface d'étanchéité pour cartouche de dessiccation d'air et socle pour cartouche de dessiccation d'air - Google Patents

Interface d'étanchéité pour cartouche de dessiccation d'air et socle pour cartouche de dessiccation d'air

Info

Publication number
EP3806977A2
EP3806977A2 EP19729484.6A EP19729484A EP3806977A2 EP 3806977 A2 EP3806977 A2 EP 3806977A2 EP 19729484 A EP19729484 A EP 19729484A EP 3806977 A2 EP3806977 A2 EP 3806977A2
Authority
EP
European Patent Office
Prior art keywords
sealing
base
sheet metal
air drying
sealing interface
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.)
Pending
Application number
EP19729484.6A
Other languages
German (de)
English (en)
Inventor
Andreas Leinung
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge 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 Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP3806977A2 publication Critical patent/EP3806977A2/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0415—Beds in cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/06—Polluted air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means

Definitions

  • the present invention relates to a sealing interface between one
  • Air drying cartridge and a base for an air drying cartridge the sealing interface having at least one sealing element, an air drying cartridge-side sheet metal element and a base-side attachment.
  • a compressed air treatment system for a compressed air treatment system of a commercial vehicle is known from DE 10 2016 208 355 A1
  • the air dryer cartridge has a cartridge housing with a closed housing cover, a drying medium accommodated in the cartridge housing, a fastening flange for closing an open end of the cartridge housing facing away from the housing cover and fastening the air dryer cartridge to the compressed air preparation device and a base plate.
  • EP 2 229 994 A2 relates to a sealing component comprising a sealing body which has a first sealing surface for sealing a volume to be sealed.
  • the sealing body at least partially encloses an electronic component.
  • An operating method for a sealing component comprises the following steps: providing a sealing component according to the invention, changing information in an electronic memory of the sealing component, querying the information from the electronic memory of the sealing component, evaluating the requested information and performing an action depending on it and / or taking into account an evaluation result of the evaluation of the requested information.
  • Air dryer cartridges and the air treatment system assigned to them must still be installed with increased effort or torque and by using special tools.
  • a sealing interface with the features of claim 1. According to this, it is provided that a sealing interface between an air drying cartridge and a base for a
  • Air drying cartridge wherein the sealing interface has at least one sealing element, at least one air drying cartridge-side sheet metal element and at least one base-side attachment, the base-side attachment having a support surface for the sealing element directed radially inwards with respect to the longitudinal axis of the base and the air drying cartridge, the sheet-metal element having air-side drying cartridges is fastened and the sealing element presses in the assembled state against the support surface, a holding element being further provided at least in sections between the sheet metal element and the base-side attachment, which is arranged in the assembled state such that the sealing element by means of
  • Sheet metal element and / or the holding element between the sheet metal element and the support surface is at least partially held in the axial and / or radial direction with respect to the longitudinal axis.
  • the invention is based on the basic idea that - in contrast to a square sealing ring which is often used in this context and which is sealed by a
  • a Sealing element is used, which is held radially on the support surface by means of the sheet metal element and thereby additionally at least partially axially and / or radially by means of a further holding element.
  • the sealing element is held at least partially in the axial and / or radial direction with respect to the longitudinal axis by means of the sheet metal element and the holding element between the sheet metal element and the support surface. Due to this pressure or this contact, the sealing element can the air drying cartridge
  • Air dryer cartridge can be implemented since the sealing element no longer has to be pressed axially against the base-side attachment during assembly and in the assembled state.
  • the sealing element no longer has to be pressed axially against the base-side attachment during assembly and in the assembled state.
  • Such guide components are, for example, attachment surfaces, guide surfaces, contact surfaces, etc.
  • Such guide components are, for example, attachment surfaces, guide surfaces, contact surfaces, etc.
  • Corresponding guide components such as centering bolts, centering shoulders or their centering surfaces are dispensed with or their use is reduced. Furthermore, as a result, the special tool for mounting the air drying cartridge, which is otherwise customary in this case, can be at least partially dispensed with. The required assembly forces and moments can be achieved through such a construction
  • the sheet metal element has an elastic hook-shaped section which is designed as a radial compression spring.
  • the sheet metal element is designed as a bottom-side cover of that end of the air drying cartridge which, in the assembled state, faces the base-side attachment.
  • the sheet metal element has, at least in sections, a shape which is essentially as known in the prior art.
  • the above-described configuration or design of the sealing interface also allows above all a simpler positioning of the components of the sealing interface with respect to one another.
  • the holding element is arranged at least in sections between the sheet metal element and the base-side attachment. With such a configuration it can be achieved that the sealing element can be held better and can be held in the desired position in the assembled state.
  • the holding element is designed as a separate component from the sheet metal element. It is conceivable, for example, to then manufacture the holding element from a different material. The assembly can be facilitated by a different pairing of materials. Tightness, corrosion and wear can also be influenced and adjusted via the selection of materials and a pairing of different materials.
  • the holding element in principle, an alternative is therefore conceivable for the holding element to be formed by a holding section of the sheet metal element.
  • the holding element can be formed by appropriate shaping of the sheet metal element.
  • the holding element is then formed, for example, by reshaping from the sheet metal element and in one piece with the sheet metal element.
  • the holding element is formed by a step and / or a shoulder of the sheet metal element.
  • the sealing interface can also have at least one first stabilizing surface
  • the first stabilization surface can be formed by a first stabilization surface section of the sheet metal element.
  • the sealing interface further has at least one second radial holding and / or pressing surface, which in the assembled state is designed and arranged in such a way that it counteracts the sealing element in the radial direction the radially inward bearing surface of the base-side attachment holds and / or presses.
  • the sealing interface further has at least one third stabilizing surface which, in the assembled state, is designed and arranged in such a way that it stabilizes the sealing element and / or that it holds the sealing element in the axial direction and / or stabilizes it against further pressure influences ,
  • the holding element is designed as a holding element separate from the sheet metal element.
  • the holding element can be part of the air dryer cartridge.
  • the holding element can also be connected, in particular, in one piece to the air dryer cartridge.
  • the holding element and the air dryer cartridge consist of different materials, they can be connected to one another by a material bond.
  • Examples of such a material bond can be, for example, vulcanization, gluing, soldering, welding, etc.
  • the holding element and / or an end region of the base-side attachment can have an outer contour, which in the assembled state has a counter-contour, e.g. a counter contour in the holding element, in the sheet metal element and / or in another
  • Counter bearing such as a housing wall of the air drying cartridge or the
  • base-side approach interacts and is arranged at least partially engaging with each other.
  • the contour can be indented, recessed and recessed
  • contours and profile elements make it possible for the contact surface of the holding element as well in particular to be able to variably adjust the base-side approach and also the load occurring there in this area. As a result, the overall design can be made more variable. It is also possible that the variable setting of the contact surface makes additional design parameters available with regard to the attachment of the air drying cartridge.
  • the contour makes it possible to obtain a further design parameter through the adjustable surface, which influences the tightening of the air drying cartridge. Tightening the air drying cartridge (also called a cartridge) no longer depends only on the material properties of the retaining ring. This also shortens the required rotation when screwing in the air drying cartridge at the interface opposite the base.
  • At least one support element can be provided, which is arranged in the assembled state such that the sealing element is supported at least partially in the axial direction with respect to the longitudinal axis by means of the support element.
  • the sealing element can additionally at least partially radially inward and / or axially opposite the air drying cartridge
  • Sealing element with the holding element vibrations and shocks are more effectively dampened, which emanate from the operation of the vehicle, in particular commercial vehicle. It can further be provided that the sealing effect of the sealing element can be further improved by the above-described configuration of the sheet metal element in cooperation with the supporting element.
  • the support element has an essentially wedge-shaped cross section.
  • Air drying cartridge and the base or base-side attachment are also aligned essentially coaxially to one another.
  • the wedge shape of the support element enables one in particular through the interaction with the sealing element Improvement of the sealing effect.
  • This interaction with the sealing element is comparable to an inclined plane, so that the support element on the one hand
  • Cross section with respect to the longitudinal axis of the base and the air drying cartridge tapers radially inwards.
  • the combination of axially pressing and supporting the sealing element is made possible by the cross-section of the support element that tapers inwards. Since the sheet metal element at least partially generates the required axial and radial support and contact pressure for the sealing element, such a shaping of the support element can increase the sealing effect of the sealing element, especially in the axial and radial direction, by interacting with the sheet metal element.
  • the support element is designed as a support ring.
  • Air drying cartridges generally have round or circular cross sections, the support element has particularly favorable support properties for the sealing element if it also has a round or circular basic shape in the form of a support ring.
  • the support ring is designed as a radially continuous or radially closed support ring. Such a configuration improves a more constant or more uniform force distribution on the sealing element and thus ensures a more stable and more precisely positioned mounting of the sealing element. This can further improve the sealing effect of the sealing interface.
  • the support ring has at least one support surface for the sealing element, which in the assembled state forms an acute angle with the support surface.
  • the oblique alignment of the support surface at an acute angle with respect to the radially inward-facing support surface enables a more targeted elastic deformation of the sealing element with respect to the support surface of the base-side extension and on the sheet metal element.
  • the sealing effect can also be increased by means of such a shape or arrangement.
  • the sheet metal element has a round basic shape. Since, as already described above, air drying cartridges generally have round cross sections, a round design of the sheet metal element, in particular in the form of an annular shape, is also particularly advantageous.
  • the round or circular sheet metal element is designed as a radially continuous or radially closed sheet metal element. Such an embodiment improves a more stable and more uniform folding or mounting of the sealing element, which also
  • the sheet metal element is closed ring-shaped.
  • the sheet metal element also has a centrally arranged through hole for compressed air. Flier sheet can for those in the
  • the sheet metal element is annular.
  • the sheet metal element is radial or radial
  • Sealing effect of the sealing interface can be improved.
  • the sheet metal element prefferably has at least one end section which is radially inward in relation to the longitudinal axis of the base and the air drying cartridge and which at least partially encompasses the sealing element in the assembled state.
  • This end section which is designed as a free, radially inner end, can act on the sealing element with a particularly high supporting force and compressive force due to such alignment with great structural simplicity. The higher this support force (at least within sensibly selected limits), the better the sealing effect of the sealing element can be influenced. So this also bears
  • the gripping of the sealing element thus brings about a radial and axial pressing or pressing of the sealing element against the support element and against the Contact surface of the base-side attachment.
  • the end section can be pressed radially and axially with only one component, namely the end section, which results in a very simple structural design of the sheet metal element and the sealing interface.
  • Air drying cartridge is pressed radially and / or axially against the holding element.
  • an end section only one component, namely the end section, can be used to press or press the sealing surface or sealing surfaces of the sealing element radially and / or axially, which results in a very simple and compact structural design of the sealing interface. Consequently, the air drying cartridge and its corresponding flange or the base can be made more compact, which means that overall less installation space within the
  • the base-side attachment is essentially ring-shaped, in particular completely annular, and has at least one attachment shoulder, the support element being set against the attachment shoulder in the assembled state such that the support element is connected by means of the attachment shoulder with respect to the longitudinal axis of the base and the air drying cartridge can be supported at least partially axially and / or at least partially radially.
  • the ring-shaped design of the base-side approach in particular with the coupling of likewise round, usually even circular, air drying cartridges offers many structural advantages with regard to the joint connection of these two components.
  • the shoulder shoulder is a structural component of the base-side shoulder, which, as a structural component, for example of a flange of an air treatment system, is in any case quite stiff and stable.
  • the holding element is designed as a holding ring, which in the assembled state is in sections between the base-side attachment and at least one housing wall of the air drying cartridge and / or the sheet metal element is arranged.
  • the retaining ring can be used to improve the axial sealing between the base-side attachment and an air-drying cartridge-side housing wall or the sheet metal element.
  • the sealing effect can be further improved in particular because the retaining ring can be pressed in statically, ie essentially immovably, between two components which are at rest relative to one another. Due to such an arrangement of the
  • retaining rings can be effectively damped, especially in the axial direction, which emanate from the commercial vehicle.
  • the holding element in the assembled state with the base-side attachment and the sheet metal element and / or the housing wall forms a press fit at least in sections.
  • the axial force exerted by the base-side attachment on the holding element and the sheet metal element is im assembled state particularly easy and precisely adjustable. This can be justified by the fact that the housing wall on the air drying cartridge side, with the sheet metal element attached to it, can generally be screwed onto the base. A screw connection in particular enables very simple and precise
  • the holding element at least one end of the
  • the retaining ring is very simple to the sheet metal element or the one end of the base-lug approach
  • Air-drying cartridge-side housing wall can be pressed axially. Furthermore, the retaining ring can also be stabilized in the radial direction by reaching around the base-side attachment. The pressing action of the retaining ring can thus be further improved by means of the two structural and structural configurations described above.
  • the holding element has at least one radial region, which extends with respect to the longitudinal axis of the base and the air drying cartridge radially between the end section of the sheet metal element and the support surface of the base-side extension, in particular wherein the
  • Radial region has a wedge-shaped cross section.
  • the radial region in particular interacts with the respective section of the sheet metal element that is in contact. Due to the corresponding shape of the end section of the sheet metal element, high radial and axial forces can be transmitted from the sheet metal element to the radial area. The radial area in turn transmits the forces acting on it to the sealing element, which is thereby deformed due to its elastic properties.
  • the radial region thus offers a further structurally very simple possibility of transmitting the radial and axial forces emanating from the end section to the sealing element.
  • the holding element has at least one pressing surface for the sealing element, the pressing surface in the assembled state in
  • the radial region of the holding element has the at least one pressure surface for the sealing element, the pressure surface in the assembled state being substantially perpendicular to the
  • the axial sealing effect of the sealing interface can thereby be improved or enlarged.
  • the vertical alignment of the pressure surface in relation to the support surface also enables maximum elastic deformation of the
  • Sealing element also simultaneously improve the sealing effect in the radial direction.
  • the radial region of the retaining ring has at least one contact surface which is in contact with the sheet metal element in the assembled state, the contact surface with the contact surface of the
  • the sealing element is pressed against the bearing surface of the base-side attachment in the assembled state by means of the sheet metal element in such a way that the sealing element is additionally pressed against the holding element.
  • the base-side attachment and the sheet metal element, in particular the end section of the sheet metal element form at least one connecting gap, by means of which the sealing element is pressurized and / or pressure-connected with at least one fluid, in particular compressed air, from at least one air-drying cartridge-side pressure chamber.
  • the connecting gap is otherwise designed as an annular gap. This type of pressurization or
  • Pressure connection ensures an additional pressing of the elastic sealing element on its respective active, limiting and / or supporting surfaces of the supporting element, the sheet metal element, the contact surface of the base-side extension and the retaining ring.
  • the sealing force and the associated surface pressure between the sealing element and the surfaces described above can consequently be increased by means of the pressure connection or the pressurization, as a result of which the sealing effect
  • the pressure connection or the pressurization can take place with a system pressure of up to approx. 17 bar. It is thus provided according to the invention that the tightness of the sealing element in the
  • Holding element by tightening the air dryer cartridge more tightly is therefore not necessary, which results in a simpler construction of the holding element and the sealing interface, as well as in a simpler assembly.
  • Securing element which is attached to the base-side attachment, form at least one anti-rotation device for the air drying cartridge and for the base.
  • An anti-rotation device is particularly important for an unintentional detachment of the sealing interface from the base-side attachment and therefore for increasing the functional reliability of the sealing interface. Since air dryer cartridges are usually screwed onto a corresponding flange or on the base of an air treatment system, an anti-rotation device is therefore a particularly effective device for maintaining the sealing interface in the assembled state in a functional and reliable sealing state.
  • Protection against rotation from the sheet metal element and the securing element offers a particularly structurally and structurally simple design of the protection against rotation.
  • the sheet metal element can also have a bayonet ring
  • Counterpart is formed by the locking element in the form of a locking screw.
  • the sheet metal element can of course also have a plurality of such bayonet recesses, which then have a plurality of corresponding ones Locking screws in the assembled state can interact or interlock.
  • the presence of such an additional anti-rotation device consisting of at least one securing element and securing finger is therefore a further reason why increased tightening torques and special tools for mounting the air drying cartridge can be dispensed with.
  • Air drying cartridges can therefore be reduced twice.
  • the compression can be reduced by the amount necessary for the tightness of a conventional square sealing ring.
  • the compression can also be reduced by the amount that is necessary so that the air dryer cartridge alone due to the resulting frictional connection, among other things. is secured against unintentional loosening by pressing the holding element. This means that only a portion remains
  • screwed-on air drying cartridge ensures that the screw connection and the safety device consisting of the finger on the sheet metal element and the safety screw are not damaged or unintentionally loosened under vibrations in the vehicle.
  • the sealing element is designed as a sealing ring, in particular an O-ring with a circular cross section.
  • O-rings form inexpensive, reliable and tried and tested seals.
  • Sealing element is at least partially made of an elastomer.
  • Sealing element or the O-ring is therefore at least partially formed from an elastomer, because it can be pressed or, due to its elastic properties, onto its active surfaces of the sealing interface that are adjacent in the assembled state.
  • the holding element is at least partially made of one
  • Thermoplastic and / or at least partially from a thermoset and / or at least is partially formed from an elastomer arises in particular from the interaction with the oblique or hook-shaped end portion of the sheet metal element. Consequently, in the present case, the sealing force acting on the holding element from the end section of the sheet metal element should be as high as possible.
  • the frictional force can be maximized in particular by reducing the frictional force.
  • the reduction in the frictional force can also be minimized by the friction pairing of the sealing element and pressing surface.
  • the pressing surface forms an im
  • the pressing surface of the holding element or its radial section forms an acute or obtuse angle with the contact surface of the base-side attachment.
  • the pressing force on the sealing element and thus the sealing effect can be further increased.
  • an elastically deformable material such as a rubber material
  • the sealing element and the holding element are connected to one another in one piece.
  • the one-piece connection in particular ensures more efficient material utilization of the sealing and holding element, which results in a smaller construction volume and thus overall in an advantageously designed sealing interface.
  • the one-piece connection saves a pair of sealing surfaces, which in an additionally improved
  • the one-piece connection of sealing element and holding element should be understood in particular to mean that a connection of both elements exists at the atomic level.
  • the sealing element and holding element form a common material cohesion without at least one in each case
  • the one-piece composite is deliberately not intended to exclude that the sealing element and holding element are also made of
  • Holding element made of different materials these can be connected to each other by a material bond.
  • a material bond can be, for example, vulcanization, gluing, soldering, welding, etc.
  • the sheet metal element has at least one support projection, by means of which the holding element can be supported radially on the outside in relation to the longitudinal axis of the base and the air drying cartridge.
  • the support projection By means of the support projection, the positional accuracy of the holding element in particular in the radial direction is improved in relation to the longitudinal axis of the base and the air drying cartridge.
  • An improved positional loyalty in turn has a positive effect on the sealing surface pairing between the holding element and the sealing element and on the at least partially formed press connection between the sheet metal element, the holding element and the base-side attachment.
  • an insert surface or insert geometry for a conventional square seal can be provided by means of the support projection, in the event that the sealing interface according to the invention is additionally or alternatively provided with a
  • the air drying cartridge described above can also be used for the air treatment system described above.
  • the air drying cartridge according to the present invention is set up and designed so that the air drying cartridge has at least partially the sealing interface according to the invention.
  • the base for the air drying cartridge is set up and designed so that the air drying cartridge has at least partially the sealing interface according to the invention.
  • Air treatment device with the features of the base, in particular wherein the base is set up and designed for that described above
  • Air drying cartridge can be attached to the base, in particular screwed on.
  • Air treatment system described has at least one sealing interface described above, at least one air drying cartridge described above and at least one base described above.
  • the present invention relates to a holding element with the features of a holding element for a sealing interface as described above.
  • Figure 1 is a schematic sectional view of an embodiment of a sealing interface according to the invention.
  • Fig. 2 is a schematic representation of an end portion of a base
  • Fig. 3 is a schematic sectional view of a second embodiment of a sealing interface according to the invention.
  • FIG. 1 accordingly shows a schematic sectional illustration of an exemplary embodiment of a sealing interface 10 according to the invention.
  • the schematic sectional view according to FIG. 1 is a schematic radial half section of the rotationally symmetrical sealing interface 10.
  • the sealing interface 10 is arranged between an air drying cartridge 12 and a base 14 for an air drying cartridge 12.
  • the base 14 is designed as a flange-like component and in some areas forms a fastening interface between the air drying cartridge 12 and one
  • Air treatment system (not shown in Fig. 1).
  • the sealing interface 10 also has a sealing element 16
  • the base-side extension 20 is completely ring-shaped.
  • the base-side extension 20 therefore rises in a ring from the base 14 for the air drying cartridge 12.
  • the base-side extension 20 thus forms an annular or annular projection.
  • the base-side extension 20 also has a reference to the longitudinal axis L.
  • longitudinal axis L of the base 14 and the air drying cartridge 12 has a radially inwardly directed bearing surface 22 for the sealing element 16.
  • the bearing surface 22 of the base-side extension 20 is a circular cylindrical one
  • Sheathed surface which extends in the axial direction with respect to the longitudinal axis L and whose center line is aligned coaxially with the longitudinal axis L.
  • a support element 24 can also be arranged between the sheet metal element 18 and the support surface 22.
  • the support element 24 has a wedge-shaped cross section. This wedge-shaped cross-section tapers radially inwards with respect to the longitudinal axis L of the base 14 and the air drying cartridge 12.
  • axial or axial direction is to be understood as a direction or as a direction vector which extends essentially parallel to the longitudinal axis of the base 14 and the air drying cartridge 12.
  • the longitudinal axis L of the base 14 and the air drying cartridge 12 is also designed as the axis of symmetry or center line thereof.
  • radial or radial direction is to be understood as a direction or as a direction vector which extends essentially radially outward in the middle perpendicularly starting from the longitudinal axis L of the base 14 and the air drying cartridge 12.
  • the support element 24 can be formed from a thermoplastic or from a thermoset.
  • the support element 24 is made of a metallic
  • Material such as steel can be formed.
  • the support element 24 is formed from a composite material consisting of steel, a thermoplastic and a thermoset.
  • thermoplastic examples include acrylonitrile butadiene styrene (ABS),
  • PA Polyamides
  • PMMA polymethyl methacrylate
  • PC polycarbonate
  • PET polyethylene terephthalate
  • PE polyethylene
  • PP polypropylene
  • PS polystyrene
  • PEEK polyether ether ketone
  • PVC polyvinyl chloride
  • PEK Polyether ketones
  • PPS polyphenylene sulfide
  • PA 11/12 polyamide 11/12
  • Polyamide 46 Polyamide 46 (PA 46), polyphthalamides (PPA), syndiotactic polysyrene (SPS), thermoplastic elastomers (TPE), polybutylene terephthalate (PBT), polyamide imides (PAI), polyphenylene sulfone (PPSU), polysulfones (PSU), polyether sulfone (PES), Polycarbonate-polyethylene terephthalate compounds (PC / PET), polycarbonate-acrylonitrile-butadiene-styrene compounds (PC / ABS) or styrene-acrylonitrile copolymer (SAN).
  • PPA polyphthalamides
  • SPS syndiotactic polysyrene
  • TPE thermoplastic elastomers
  • PBT polybutylene terephthalate
  • PAI polyamide imides
  • PPSU polyphenylene sulfone
  • PSU polysulfones
  • PES polyether sulf
  • thermoplastics can be used individually or in combination for the support ring 24.
  • Examples of a duroplastic can be: chitin, chitosan, epoxy resin, urea-formaldehyde resin (UF), melamine-formaldehyde resin (MF), melamine / phenol-formaldehyde (MPF), phenol-formaldehyde resin (PF), polyester, polyurethane (PUR) or Unsaturated polyester (UP).
  • a duroplastic can be: chitin, chitosan, epoxy resin, urea-formaldehyde resin (UF), melamine-formaldehyde resin (MF), melamine / phenol-formaldehyde (MPF), phenol-formaldehyde resin (PF), polyester, polyurethane (PUR) or Unsaturated polyester (UP).
  • thermosets can be used individually or in combination for the support ring 24
  • the support ring 24 can also be formed from a thermoplastic and a thermoset.
  • the support element 24 can also be designed as a closed support ring 24.
  • Sheet metal element 18 and the bearing surface 22 can also be supported in the radial direction with respect to the longitudinal axis L.
  • the support ring 24 also has a support surface 24a for the sealing element 16 which, when assembled, forms an acute angle with the support surface 22.
  • the support ring 24 has a radial outer surface which has the same orientation as the bearing surface 22 of the base-side extension 20.
  • This support surface 24a can have a curved or concave shape with respect to the cross section of the support element 24, the support surface 24a being in contact with the
  • Shape of the sealing element 16 is adapted.
  • the sheet metal element 18 also has an end section 26 which is radially inward with respect to the longitudinal axis L of the base 14 and the air drying cartridge 12.
  • this end section 26 partially engages around the sealing element 16.
  • the sealing element 16 can also be pressed radially and axially against the support surface 24a of the support element 24 by means of the end section 26 with respect to the longitudinal axis L of the base 14 and the air drying cartridge 12.
  • the sheet metal element 18 is further fastened on the air drying cartridge side and presses the sealing element 16 against the bearing surface 22 in the assembled state.
  • the sealing element 16 is pressed radially against the support surface 22 of the base-side extension 20 in the assembled state.
  • the sheet metal element 18 also forms a bottom cover for the
  • Air drying cartridge 12 and faces the base-side extension 20 in the assembled state.
  • the sheet metal element 18 has a round basic shape.
  • the sheet metal element 18 is consequently formed in a closed ring.
  • the sheet metal element 18 also has an outer radial end region, which is crimped or flanged with a housing region of the air drying cartridge 12 on its housing base.
  • the air drying cartridge 12 In the assembled state of the air drying cartridge 12, this housing base also faces the base-side extension 20.
  • the air drying cartridge 12 further has an oil filter (not shown in FIG. 1).
  • the air drying cartridge 12 additionally comprises a non-return valve, which blocks the passage when compressed air is supplied by the air drying cartridge 12 and opens when it is regenerated, in particular to bypass the oil filter.
  • the sealing element 16 is designed as a sealing ring 16 in the form of an O-ring with a circular cross section.
  • the sealing element 16 is also formed from an elastomer.
  • the elastomer is designed as a rubber material or rubber-based material.
  • the rubber-based material can have either a natural rubber or a synthetic rubber as a base.
  • Examples of such an elastomer can be: polyacrylate rubber,
  • Chlorpolyethylene rubber chlorosulphonyl polyethylene rubber, ethylene propylene diene rubber, ethylene propylene rubber, fluorine rubber, tetrafluoroethylene propylene copolymer rubber, fluorine rubber hifluor, perfluoro elastomer, butadiene rubber, chloroprene rubber Rubber, isobutene-isoprene rubber (butyl rubber), bromobutyl rubber, chlorobutyl rubber, isoprene rubber, acrylonitrile-butadiene rubber, hydrogenated acrylonitrile-butadiene rubber, natural rubber, styrene-butadiene rubber, fluorine rubber Silicone rubber, methyl-phenyl-silicone rubber, methyl-phenyl-vinyl-silicone rubber, methyl-silicone rubber, methyl-vinyl-silicone rubber, polyester urethane or polyether urethane.
  • Such elastomers can be used individually or in combination for the sealing ring 16
  • the end section 26 of the sheet metal element 18 also has a curved section. This curved section is radially within a to the contour of the
  • Air dryer cartridge 14 adapted intermediate portion of the sheet metal element 18 formed.
  • the bent section is otherwise in the assembled state in one
  • the bent section has a hook-like shape.
  • the base-side extension 20 has an extension shoulder 28.
  • the shoulder shoulder 28 has a radially extending annular shoulder surface, the central axis of this shoulder surface being coaxial with the longitudinal axis L
  • shoulder shoulder 28 has an axially extending circular cylindrical and jacket-like shoulder surface, the central axis of this shoulder surface being aligned coaxially with the longitudinal axis L.
  • the support surface 22 of the base-side attachment 20 extends in the axial direction up to one end of the base-side attachment 20, which faces the sheet metal element 18.
  • the axially extending shoulder surface of the shoulder shoulder 28 and the bearing surface 22 of the base-side shoulder 20 can also be arranged flush with one another.
  • the support element 24 is still employed against the shoulder shoulder 28.
  • the support element 24 has two surfaces corresponding or aligned with the two attachment surfaces of the attachment shoulder 28.
  • the support element can also be positioned on the shoulder shoulder 28 such that the support element 24 is supported axially and radially by means of the shoulder shoulder 28 with respect to the longitudinal axis L of the base 14 and the air drying cartridge 12.
  • the sealing interface 10 also has a holding element 30 in the form of a holding ring 30.
  • the holding element 30 can preferably be designed as a holding element 30 separate from the sheet metal element 18.
  • the holding element 30 can be part of the air dryer cartridge 12.
  • the holding element 30 can also be connected in particular in one piece to the air dryer cartridge 12.
  • Examples of such a material bond can, for example, vulcanize,
  • the retaining ring 30 is formed from an elastomer as described above.
  • the retaining ring 30 is formed from a thermoplastic as described above.
  • the retaining ring 30 is formed from a thermoset as described above.
  • the retaining ring 30 is formed from a metallic material such as steel. Furthermore, it is conceivable that the retaining ring can also be a combination of
  • thermoplasts thermosets or elastomers (as described above) is formed.
  • the retaining ring 30 is formed from a composite material consisting of steel, a thermoplastic, an elastomer and a thermoset.
  • the retaining ring 30 is arranged in the assembled state between the base-side extension 20 and the sheet metal element 18.
  • the sheet metal element 18 further has a support projection 18a.
  • the support projection 18a is designed as an annular and closed radial web 18a with a U-shaped cross section.
  • the support projection 18a is arranged on the sheet metal element 18 such that the
  • the holding element 30 can be supported radially on the outside in relation to the longitudinal axis of the base 14 and the air drying cartridge 12.
  • Air drying cartridge 12 and the sheet metal element 18 is arranged.
  • the retaining ring 30 also forms a press fit in the assembled state with the base-side extension 20 and with the sheet metal element 18 and the housing wall 32.
  • the retaining ring 30 also partially engages around one end of the base-side extension 20, which faces the sheet metal element 18. Furthermore, the retaining ring 30 has a radial region 34.
  • This radial region 34 extends with respect to the longitudinal axis L of the base 14 and the air drying cartridge 12 radially between the end section 26 of the
  • the radial region 34 also has a wedge-shaped cross section.
  • This wedge-shaped cross section tapers radially inwards with respect to the longitudinal axis L of the base 14 and the air drying cartridge 12.
  • the radial region 34 also has a pressure surface 34a for the sealing element 16.
  • the pressure surface 34a in turn is oriented substantially perpendicular to the support surface 22 of the base-side extension 20 in the assembled state.
  • the pressing surface 34a can furthermore have a countersunk surface 34b, which faces the sealing element 16 in the assembled state and has a closed annular design, which is adapted to the contour of the sealing ring 16.
  • the retaining ring 30 also has an annular, radially circumferential base depression 30a, by means of which the retaining ring 30 engages radially and axially around the base-side extension 20 in the assembled state.
  • the base depression 30a faces the base-side extension 20 in the assembled state.
  • the recess 30a engages around the socket 20 on both sides. Gripping around the base-side extension 20 additionally increases the positional accuracy of the retaining ring 30.
  • the outer contour 30b of the retaining ring 30 has a first contour section 30c which, in the assembled state, is oriented essentially perpendicular to the bearing surface 22.
  • a second contour section 30d is formed or connected radially inside the first contour section 30c.
  • a contact surface of the second contour section 30d which is in contact with the end section 26 in the assembled state, encloses at an acute angle with the contact surface 22 of the base-side extension 20.
  • a kink 30e is formed between the first contour section 30c and the second contour section 30d.
  • the first contour section 30c can be designed such that it is essentially completely in contact with a surface of the sheet metal element 18 in the assembled state.
  • the second contour section 30d can further be configured such that it is in the
  • both the first contour section 30c and the second contour section 30d and also the kink 30e lie between the first
  • the contour section 30c serves as or forms a first stabilizing surface 30c, which in the assembled state is designed and arranged in such a way that it
  • Stabilization of the air drying cartridge 12 is used in the axial direction.
  • a stabilizing section 30f or a radial holding and / or pressing surface or stabilizing surface 30f of the holding element 30 adjoins the second contour section 30d.
  • the sealing interface 10 further has at least one second radial holding and / or pressing surface 30f, which in the assembled state is designed and arranged in such a way that it holds the sealing element 16 in the radial direction against the radially inwardly directed bearing surface 22 of the base-side extension 20 and / or presses.
  • the pressing surface 34a is used to have a third stabilizing surface 34a, which in the assembled state is designed and arranged such that it is used to stabilize the
  • the sealing element 16 is pressed by means of the sheet metal element 18 in the assembled state against the bearing surface 22 of the base-side extension 20, wherein the sealing element 16 can also be supported by the support element 24.
  • the sealing element 16 is therefore additionally pressed against the retaining ring 30.
  • the sealing element 16 and the holding element 30 are connected to one another in one piece (cf. FIG. 3).
  • the base-side extension 20 and the end section 26 of the sheet metal element 18 further form a connecting gap 36.
  • the connecting gap can in particular be designed as an annular connecting gap 36.
  • the connecting gap can consequently also be formed radially continuously.
  • the sealing element 16 is consequently pressurized and pressure-connected by means of the connecting gap 36 with compressed air from a pressure chamber 38 on the air drying cartridge side.
  • the sheet metal element 16 and a securing element 40 also form one
  • Anti-rotation device for the air drying cartridge 12 and for the base 14.
  • the securing element 40 is fastened to the base-side extension 20.
  • the securing element 40 is designed as a securing screw 40 and can be screwed into the base-side extension 20 radially from the outside.
  • the end section 26 of the sheet metal element 18 can be designed in sections as a bayonet ring with a corresponding bayonet recess.
  • Locking screw 40 formed.
  • the end section 26 of the sheet metal element 18 can of course also have a plurality of such bayonet recesses, which then have a plurality
  • the sheet metal element 18 has one or more securing fingers at its end section 26.
  • Locking screw 40 in the form of a bayonet lock.
  • a cone can also be arranged, which cooperates with the locking finger 18b of the bayonet ring in the assembled state.
  • the air drying cartridge 12 is screwed in by means of the cone
  • Locking screw 40 in the base-side extension 20 rotatable to a final position.
  • Air drying cartridge 12 can only be turned into the end position with a screwing tool, which makes the use of a special tool unnecessary.
  • the locking screw 40 also has a sealing element in the form of an O-ring for sealing the system pressure within the base-side extension 20 or the air drying cartridge 12 against ambient pressure
  • the anti-rotation device prefferably be formed by the retaining ring 30, the base-side extension 20, the sheet metal element 18 and the housing wall 32 of the air drying cartridge 12 by means of frictional engagement or frictional engagement.
  • the bayonet ring of the end section 26 of the sheet metal element and the locking screw 40 can be dispensed with.
  • the end section 26 of the sheet metal element 18 can additionally have one or more holding fingers for axially holding the O-ring 16 within the end section 26, so that the O-ring 16 is secured against axial falling out of the sealing interface during assembly or disassembly when the air dryer cartridge is depressurized is.
  • the sectional view of the sealing interface 10 according to the invention shown in FIG. 1 relates in particular to the assembled state.
  • the first active surface pairing is formed by a radial inner surface of the end section 26 of the sheet metal element 18 and the sealing element 16, which is from the
  • End portion 26 is partially encompassed.
  • the end section 26 of the sheet metal element 18 has a bent and hook-shaped section as described above, the radial inner surface of the end section 26 can be pressed radially and axially against the sealing ring 16, as a result of which the latter is deformed.
  • the axial and radial sealing force generated by the sheet metal element 18 presses the sealing ring 16 radially against the inner bearing surface 22 of the base-side extension 20.
  • a second pair of active surfaces is formed between the sealing ring 16 and the bearing surface 22.
  • a third pairing of effective areas can be achieved through the corresponding contact point of the
  • Sealing ring 16 are formed with the support surface 24a of the support ring 24, which supports the sealing ring 16 in the axial and radial directions.
  • the support ring 24 presses the sealing ring 16 with a reaction force (based on the axial and radial sealing force generated by the
  • the reaction force can be generated by the employed state of the support element 24 on the shoulder shoulder 28 and transmitted accordingly from the support ring 24 to the sealing ring 16.
  • Sealing ring 16 and retaining ring 30 thus form the fourth effective surface pairing.
  • Sealing ring 16 and the surfaces delimiting it form an efficient and structurally simple sealing fastener 10 with which a predetermined or
  • Sealing interface 10 particularly compact in the radial direction.
  • Sealing interface 10 a particularly high positional accuracy of the sealing element 16, possibly the support element 24, and the retaining ring 30.
  • Sealing interface 10 is also minimized.
  • End section 26 compressive force acting radially with respect to the longitudinal axis L outward compressive force vector.
  • Imprinted radial and axial sealing force can be increased, which further improves the sealing effect of the sealing interface.
  • FIG. 2 shows a schematic illustration of an end region 20a of the base-side extension 20 for the sealing interface 10 according to FIG. 1.
  • the end region 20a here has an outer contour with four elevations 20b, which face the holding element 30 in the assembled state. It is conceivable in this context that the elevations are rectangular elements from the
  • the elevations 20b act in the assembled state with a counter contour, e.g. a counter contour in the holding element 30, in the sheet metal element 18 and / or in another counter bearing, such as a housing wall of the air drying cartridge, together (not shown in more detail).
  • a counter contour e.g. a counter contour in the holding element 30, in the sheet metal element 18 and / or in another counter bearing, such as a housing wall of the air drying cartridge, together (not shown in more detail).
  • the elevations 20b and the counter contour can be arranged at least partially engaging with one another.
  • the counter contour can be formed by indentations, notches, recesses and corresponding counterparts such as elevations.
  • the outer contour described above can be achieved particularly advantageously on the base-side extension 20 in its end region 20a, because this contour can be cast in die-cast aluminum.
  • the holding element or the holding ring 30 has the above-described outer contour with the four elevations according to FIG. 2 and the base-side extension 20 or its end region 20a has the correspondingly described opposite contour.
  • FIG. 3 shows a schematic sectional illustration of a second exemplary embodiment of a sealing interface 110 according to the invention.
  • the sealing interface 110 has all the structural and functional features as the sealing interface 10.
  • the sealing interface 110 is also arranged between an air drying cartridge 112 and a base 114 for an air drying cartridge 112.
  • a sealing element 116 is also provided here.
  • the sealing element 116 is also between one
  • the base-side extension 120 here also has a radially inwardly directed bearing surface 122 for the sealing element 116 with respect to the longitudinal axis L of the base 114 and the air drying cartridge 112.
  • a holding shoulder 130 is provided here as the holding element 130.
  • the holding shoulder 130 is integrally formed by forming in the sheet metal element 114.
  • the sheet metal element 118 initially has a contact section 118b, which goes radially inward from the flange 118a and bears against a base part or a housing wall 132 of the air drying cartridge 112.
  • a support projection 118c extends away from the housing wall 132, which essentially corresponds to the function of the support projection 18a according to the exemplary embodiment according to FIG. 1.
  • the support projection 118c then goes back to a contact surface 118d, which again bears against the housing wall 132.
  • the holding element 130 follows, initially with a projection 130a, which follows the outer contour of the base 114 in the assembled state. From there, a holding element section 130b extends almost in a 90 ° bend and parallel to the surfaces 118b and 118d, which in the axial direction
  • This section 130b is adjoined by a section 118e which extends essentially axially or in the longitudinal direction of the axis L, the section 118e extending radially
  • This section 118e is followed by the securing fingers 118f (corresponds to securing fingers 18b according to the exemplary embodiment according to FIG. 1) and corresponding holding fingers 118g (also shown in the exemplary embodiment according to FIG. 1), the holding fingers 118g serving to further hold the sealing element 116.
  • the pressure chamber on the air drying cartridge side is designated by reference numeral 138.
  • a locking screw 140 is also provided here.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Drying Of Gases (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Compressor (AREA)

Abstract

La présente invention concerne une interface d'étanchéité (10) destinée à assurer l'étanchéité entre une cartouche de dessiccation d'air (12) et un socle (14) pour une cartouche de dessiccation d'air (12), ladite interface d'étanchéité (10) présentant au moins un élément d'étanchéité (16), au moins un élément de tôle (18) côté cartouche de dessiccation d'air et au moins une pièce rapportée (20) côté socle, ladite pièce rapportée (20) côté socle comportant, relativement à l'axe longitudinal (L) du socle (14) et de la cartouche de dessiccation d'air (12), une surface d'appui (22) pour l'élément d'étanchéité (16), orientée vers l'intérieur dans la direction radiale, l'élément de tôle (16) étant fixé côté cartouche de dessiccation d'air, et l'élément d'étanchéité (16) appuyant à l'état monté contre la surface d'appui (22), un élément de retenue (30) étant en outre agencé de sorte que, à l'état monté, l'élément d'étanchéité (16) est maintenu, au moyen de l'élément de tôle (18) et/ou de l'élément de retenue (30), entre l'élément de tôle (18) et la surface d'appui (22), au moins en partie dans la direction axiale et/ou radiale par rapport à l'axe longitudinal (L).
EP19729484.6A 2018-06-12 2019-06-04 Interface d'étanchéité pour cartouche de dessiccation d'air et socle pour cartouche de dessiccation d'air Pending EP3806977A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018113967.5A DE102018113967A1 (de) 2018-06-12 2018-06-12 Dichtschnittstelle für eine Lufttrocknungskartusche und einen Sockel für eine Lufttrocknungskartusche
PCT/EP2019/064423 WO2019238464A2 (fr) 2018-06-12 2019-06-04 Interface d'étanchéité pour cartouche de dessiccation d'air et socle pour cartouche de dessiccation d'air

Publications (1)

Publication Number Publication Date
EP3806977A2 true EP3806977A2 (fr) 2021-04-21

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ID=64109181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19729484.6A Pending EP3806977A2 (fr) 2018-06-12 2019-06-04 Interface d'étanchéité pour cartouche de dessiccation d'air et socle pour cartouche de dessiccation d'air

Country Status (6)

Country Link
US (1) US11788623B2 (fr)
EP (1) EP3806977A2 (fr)
CN (1) CN112334212B (fr)
BR (1) BR112020023447A2 (fr)
DE (2) DE102018113967A1 (fr)
WO (1) WO2019238464A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022152531A1 (fr) 2021-01-12 2022-07-21 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Interface de fixation, cartouche de dessiccateur d'air et dispositif de traitement de l'air
EP4026605A1 (fr) 2021-01-12 2022-07-13 KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH Interface de fixation, cartouche de séchage à l'air et dispositif de traitement d'air
EP4296128A1 (fr) 2022-06-21 2023-12-27 KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH Interface de positionnement et de montage, cartouche d'agent siccatif et dispositif de commande d'air

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6076272A (en) 1998-10-29 2000-06-20 Conklin, Iii; Richard J. Single plate compaction and seal design for a compressed air dryer
DE102009013003A1 (de) 2009-03-13 2010-09-16 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Dichtungskomponente mit elektronischer Komponente
WO2014044266A1 (fr) 2012-09-19 2014-03-27 Schaeffler Technologies AG & Co. KG Ensemble d'étanchéité
CN109357015A (zh) 2012-10-03 2019-02-19 Nok株式会社 密封装置
DE102015013493A1 (de) * 2015-10-16 2017-04-20 Man Truck & Bus Ag Vorrichtung zur lösbaren Befestigung einer Trockenmittelpatrone an einem Gehäuse einer Druckluftaufbereitungsanlage eines Fahrzeugs
DE102015013491A1 (de) * 2015-10-16 2017-04-20 Man Truck & Bus Ag Vorrichtung zur lösbaren Befestigung einer Trockenmittelpatrone an einem Gehäuseabschnitt einer Druckluftaufbereitungsanlage eines Fahrzeugs
DE102015122167A1 (de) 2015-12-18 2017-06-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Lufttrocknerpatrone und Druckluftaufbereitungsvorrichtung
DE102016208355A1 (de) 2016-05-13 2017-11-16 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Druckluftaufbereitungssystem, insbesondere für eine Druckluftaufbereitungsanlage eines Nutzfahrzeugs

Also Published As

Publication number Publication date
DE102018113967A1 (de) 2019-12-12
BR112020023447A2 (pt) 2021-02-23
DE202018104655U1 (de) 2018-10-19
US11788623B2 (en) 2023-10-17
CN112334212B (zh) 2023-04-04
WO2019238464A3 (fr) 2020-02-06
CN112334212A (zh) 2021-02-05
US20210270371A1 (en) 2021-09-02
WO2019238464A2 (fr) 2019-12-19

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Owner name: KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH