EP4532273A1 - Pneumatikkolben und ein verfahren zu dessen herstellung - Google Patents
Pneumatikkolben und ein verfahren zu dessen herstellungInfo
- Publication number
- EP4532273A1 EP4532273A1 EP23719357.8A EP23719357A EP4532273A1 EP 4532273 A1 EP4532273 A1 EP 4532273A1 EP 23719357 A EP23719357 A EP 23719357A EP 4532273 A1 EP4532273 A1 EP 4532273A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- pneumatic
- piston body
- pneumatic piston
- sealing element
- 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
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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
-
- 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
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/569—Vacuum systems indirect, i.e. vacuum booster units characterised by piston details, e.g. construction, mounting of diaphragm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/08—Brake cylinders other than ultimate actuators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
- B60T8/3255—Systems in which the braking action is dependent on brake pedal data
- B60T8/327—Pneumatic systems
-
- 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
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/005—Pistons; Trunk pistons; Plungers obtained by assembling several pieces
- F16J1/006—Pistons; Trunk pistons; Plungers obtained by assembling several pieces of different materials
- F16J1/008—Pistons; Trunk pistons; Plungers obtained by assembling several pieces of different materials with sealing lips
-
- 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
- F16J15/56—Other sealings for reciprocating rods
-
- 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
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/08—Seals, e.g. piston seals
Definitions
- Electro-pneumatic modulators are used, for example, in pneumatic brake systems for commercial vehicles to adjust air pressure via targeted electrical control of valves in order to provide a desired brake pressure for a pneumatic brake.
- the present invention relates to a pneumatic piston for an electro-pneumatic modulator.
- the modulator includes a piston housing with a chamber for receiving the pneumatic piston.
- the pneumatic piston comprises a sealing element for sealing a gap between the pneumatic piston and the piston housing, a piston body with a recess for receiving the sealing element, and a securing element which is designed to positively fix the sealing element in the recess. It is understood that the sealing element is designed to seal the gap between the piston body and the housing only after the pneumatic piston has been inserted into the piston housing.
- the security element includes one of the following:
- the sealing element comprises rubber or a plastic
- the piston body comprises a plastic or a metal
- the securing element comprises a plastic or a metal.
- the step of forming the piston body is carried out using a folding core.
- Embodiments overcome the disadvantages of conventional pneumatic pistons in that no welded connections and no hot caulking between the piston body and a securing element are necessary. Instead, a positive connection is provided that also meets higher demands in the long term. A large seal can be supported directly in the piston on a cheek. This means that a stronger material is available without the need for a weld. Since no welding process is required, offer
- Fig. 5 shows a schematic flow diagram for a method for producing the pneumatic piston.
- Fig. 1 shows an exemplary embodiment of a pneumatic piston 100, which is inserted into a chamber 25 of a piston housing 20.
- the pneumatic piston 100 is, for example, formed as a hollow cylinder, so that an inner passage opening of the pneumatic piston 100 encloses a pin 22 of the piston housing 20 and adjoins an outer (cylindrical) wall 21.
- a seal between the piston body 120 and the pin 22 is provided by an annular sealing element 110, which is held on the piston body 120 by means of a securing element 130.
- the securing element 130 In the assembled state, as can be seen in FIG. 1, the securing element 130 cannot be lost, since the securing ring 130 is prevented from being compressed by the inner pin 22 of the housing.
- Fig. 3 shows a possible embodiment of the securing element 130, as shown as a disk in Fig. 2.
- the disk 130 is annular and has radially outwardly pointing projections 133 and a radial incision 135 into which the locking elements 140 from FIG. 2 can engage.
- the securing element 130 is thereby held again in all spatial directions.
- the engagement of the locking elements 140 in the incision 135 prevents twisting and the gripping around the projections 133 (through the undercuts 144) prevents axial displacement.
- a radial displacement is again prevented by the central pin 22 (see FIG. 1), which engages in the central opening of the disk 130 with only a small amount of play.
- the security element 130 is divided into two
- All previous connections between the securing element 130 and the piston body 120 were detachable. According to further exemplary embodiments, however, optional permanent connections (eg by welding, heat caulking, laser, ultrasound, etc.) can be made between the securing element 130 and the piston body 120 will be trained.
- the securing element 130 can then also be designed as a simple disk.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022113946.8A DE102022113946A1 (de) | 2022-06-02 | 2022-06-02 | Pneumatikkolben und ein Verfahren zu dessen Herstellung |
| PCT/EP2023/059521 WO2023232334A1 (de) | 2022-06-02 | 2023-04-12 | Pneumatikkolben und ein verfahren zu dessen herstellung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4532273A1 true EP4532273A1 (de) | 2025-04-09 |
Family
ID=86185058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23719357.8A Pending EP4532273A1 (de) | 2022-06-02 | 2023-04-12 | Pneumatikkolben und ein verfahren zu dessen herstellung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12607261B2 (de) |
| EP (1) | EP4532273A1 (de) |
| CN (1) | CN119630563A (de) |
| DE (1) | DE102022113946A1 (de) |
| WO (1) | WO2023232334A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024101695A1 (de) * | 2024-01-22 | 2025-07-24 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Relaisventil für eine Druckluftanlage eines Fahrzeugs |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2587405A (en) * | 1947-01-15 | 1952-02-26 | Sealol Corp | Seal for relatively rotating members |
| DE10147981A1 (de) | 2001-09-28 | 2003-04-24 | Siemens Ag | Verbindungselement zur Verbindung eines Kolbens mit einem Rückstellelement |
| GB2417545A (en) * | 2004-08-28 | 2006-03-01 | Haldex Brake Products Ltd | Valve assembly |
| GB2467957A (en) * | 2009-02-21 | 2010-08-25 | Haldex Brake Products Ltd | Brake modulator valve with acceptable cracking pressure |
| GB201122011D0 (en) | 2011-12-21 | 2012-02-01 | Haldex Brake Products Ltd | Valve assembly |
| DE102015219631A1 (de) | 2015-03-24 | 2016-09-29 | Zf Friedrichshafen Ag | Kolben-Hülsen-Bauteil für ein mit Druckmittel beaufschlagbares Stellglied, mit Druckmittel beaufschlagbares Stellglied sowie Verteilergetriebe |
| DE102018121716A1 (de) | 2018-09-06 | 2020-03-12 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Kolbenvorrichtung für einen elektropneumatischen Modulator für ein Fahrzeug, Kolbensystem, Modulator und Verfahren zum Herstellen einer Kolbenvorrichtung |
| DE102018121721A1 (de) | 2018-09-06 | 2020-03-12 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Gehäuse für einen elektropneumatischen Modulator für eine elektropneumatische Bremsanlage für ein Fahrzeug, elektropneumatischer Modulator mit einem Gehäuse und Verfahren zum Herstellen eines elektropneumatischen Modulators |
-
2022
- 2022-06-02 DE DE102022113946.8A patent/DE102022113946A1/de active Pending
-
2023
- 2023-04-12 EP EP23719357.8A patent/EP4532273A1/de active Pending
- 2023-04-12 US US18/870,683 patent/US12607261B2/en active Active
- 2023-04-12 CN CN202380056938.2A patent/CN119630563A/zh active Pending
- 2023-04-12 WO PCT/EP2023/059521 patent/WO2023232334A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022113946A1 (de) | 2023-12-07 |
| CN119630563A (zh) | 2025-03-14 |
| WO2023232334A1 (de) | 2023-12-07 |
| US20250243935A1 (en) | 2025-07-31 |
| US12607261B2 (en) | 2026-04-21 |
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Legal Events
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20250102 |
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| AK | Designated contracting states |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
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