EP4630299A1 - Bremssystem für ein fahrzeug und radbremsvorrichtung - Google Patents
Bremssystem für ein fahrzeug und radbremsvorrichtungInfo
- Publication number
- EP4630299A1 EP4630299A1 EP23809524.4A EP23809524A EP4630299A1 EP 4630299 A1 EP4630299 A1 EP 4630299A1 EP 23809524 A EP23809524 A EP 23809524A EP 4630299 A1 EP4630299 A1 EP 4630299A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- wheel
- housing
- vehicle
- hollow shaft
- 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
-
- 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
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/08—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels using fluid or powdered medium
- B60T1/087—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels using fluid or powdered medium in hydrodynamic, i.e. non-positive displacement, retarders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
-
- 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
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
-
- 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
- B60T10/00—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope
- B60T10/02—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope with hydrodynamic brake
-
- 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
- F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
- F16D35/005—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion with multiple lamellae
-
- 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
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
-
- 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
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
- F16D57/02—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades or like members braked by the fluid
-
- 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
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
-
- 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
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02034—Gearboxes combined or connected with electric machines
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
- F16H2057/02052—Axle units; Transfer casings for four wheel drive
Definitions
- the invention relates to a braking system for a vehicle, preferably an electrically driven vehicle, comprising a brake for at least one vehicle wheel and a wheel braking device.
- a permanent brake for motor vehicles, especially for heavy trucks, is known from DE-AS 1 215 013.
- a hydrodynamic brake is used as a permanent brake, which is arranged on a differential gear of a vehicle axle.
- a gear drive that speeds up is arranged on the plate edge of the differential gear, which drives a rotor of the hydrodynamic brake to pump brake fluid.
- an adjustable scoop pipe scoops up the brake up to a desired diameter. The braking effect is adjusted by the pressure of the brake fluid in the brake.
- the object of the invention is to provide a braking system for a vehicle and a wheel braking device which do not require additional braking hydraulics.
- the braking system explained at the beginning comprises a brake for at least one vehicle wheel to generate a braking force, the brake being filled with a viscous fluid causing friction in the brake, the fluid containing the viscous
- the brake is filled with fluid and is arranged in an encapsulated container. By arranging the fluid in a completely sealed container, additional brake hydraulics are not required, which reduces the volume and weight of the braking system. As the brake is filled with viscous fluid and acts on the walls by means of fluid friction due to the inertia that occurs when the fluid moves, it works wear-free and does not release any particles into the environment. Replacing the viscous fluid is therefore not necessary.
- the brake has a plurality of interlocking partition walls, wherein the viscosity of the fluid spreading between the partition walls is selected as a function of the distance between the opposing partition walls.
- the distance between the partition walls determines the fluid friction and thus the braking torque of the brake.
- the brake is arranged close to an electric drive unit of the wheel and is preferably an integral part of the drive unit. This makes it possible to produce a compact drive/brake unit that takes up little installation space. In addition, positioning the brake close to the drive unit reduces the unsprung mass on the wheel side, which increases the driving comfort of the vehicle.
- a gear is arranged on the drive unit, which is coupled to the electric drive unit and an auxiliary drive to trigger the braking effect.
- the auxiliary drive has the task of initiating or preventing the braking effect.
- a further aspect of the invention relates to a wheel brake device for a vehicle, comprising a brake arranged in a housing and filled with a viscous fluid, wherein the housing is connected to a wheel shaft in a rotationally fixed manner and the wheel shaft can be driven by a hollow shaft which is coupled to an electric drive unit.
- a wheel brake device does not require additional brake hydraulics, which reduces manufacturing costs. Since the housing, drive shaft and output shaft rotate at the same speed during operation, there is zero braking torque when the brake is released, since no fluid friction occurs. The fluid friction caused by the shearing effect in the viscous fluid results in a Difference in speed between the wheel shaft and the hollow shaft, which triggers a braking effect on the wheel.
- a gear is positioned in the housing containing the brake, which is connected to an auxiliary drive via an auxiliary hollow shaft extending partially on the outside of the hollow shaft in order to apply a deceleration force.
- the braking effect can thus be triggered by a simple design measure.
- the transmission is designed as a planetary gear transmission, the sun of which is coupled to the hollow shaft connected to the electric drive unit, while the housing carries its hollow gear and the planetary gear carrier is connected to the auxiliary hollow shaft operated by the auxiliary drive.
- Planetary gear transmissions are well known and are mass-produced in large numbers. This makes them particularly inexpensive, which reduces the manufacturing costs of the wheel brake device.
- the brake has several interlocking partition walls, whereby the viscosity of the fluid spreading between the partition walls is selected depending on the distance between the opposing partition walls.
- the interlocking partition walls increase the effective area for the fluid friction in a small installation space, thereby increasing the performance of the wheel brake device.
- the coaxially running shafts are supported so that they can rotate against each other and/or against the housing. This means that all shafts and the housing can be rotated against each other as desired, which supports the functionality of the wheel brake device in a small installation space.
- the planetary gear is mounted on the housing in a rotationally fixed manner via a clutch coupled to the auxiliary hollow shaft.
- This allows electrically powered vehicles to operate in unbraked driving mode, with the vehicle's high-voltage electric drive in a recuperation mode. This is particularly the case when driving downhill.
- the driven wheel is designed aerodynamically. This is possible because there is no need to cool the wheel brake device. The vehicle therefore has a longer range and better efficiency.
- Fig. 1 shows an embodiment of the braking system according to the invention with a wheel braking device.
- Fig. 1 shows an embodiment of a braking system of a vehicle in the form of a wheel braking device.
- the wheel braking device 1 comprises a housing 3 in which the brake 5 and a gear 7 are arranged.
- the housing 3 is completely filled with a viscous liquid 9 and is completely sealed off from the environment so that the viscous liquid 9 cannot escape.
- the brake 5 consists of several interlocking lamellae 11 as comb-like partitions, between which the viscous liquid 9 expands.
- the brake 5 is connected in a rotationally fixed manner to a solid wheel shaft 15 that drives a wheel 13 of the vehicle.
- the housing 3 is rotatably mounted on the solid wheel shaft 15 by means of a roller bearing.
- the hollow shaft 19 is coupled to the sun 21 of a planetary gear 23, the ring gear 25 of which is carried by the housing 3.
- the planetary gear carrier 27 of the planetary gear 23 is connected to an auxiliary hollow shaft 29, which in turn surrounds the hollow shaft 19 and can be driven in a braking manner by an electromechanically actuated auxiliary brake 31.
- the solid wheel shaft 15, the hollow shaft 19 and the auxiliary hollow shaft 29 are supported against each other and against the housing 3 with the roller bearings 33 and form a coaxial system.
- a torque generated by the electric drive unit 17 is passed on from the hollow shaft 19 designed as an output shaft to the solid wheel shaft 15, thereby driving a wheel 13.
- the solid wheel shaft 15 rotates at the speed of the hollow shaft 19. The speed difference is zero.
- the planetary gear carrier 27 is decelerated by means of the auxiliary brake 31. The deceleration takes place by activating the auxiliary brake 31 via the brake signal.
- the deceleration torque is transmitted via the auxiliary hollow shaft 29 to the planetary gear carrier 27 of the planetary gear 23.
- the viscous fluid expanding between the plates 11 generates fluid friction on the plates, which slows down the rotational movement of the wheel shaft 15. This creates a differential speed between the wheel shaft 15 and the housing 3, which leads to the formation of a braking torque between the hollow shaft 19 and the solid wheel shaft 15, whereby the wheel 13 is braked.
- the planetary gear carrier 15 is firmly coupled to the housing 3 during driving operation of the vehicle driven by an electric drive. The vehicle can thus continue to roll without being braked.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Braking Arrangements (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022004536.2A DE102022004536A1 (de) | 2022-12-05 | 2022-12-05 | Bremssystem für ein Fahrzeug und Radbremsvorrichtung |
| PCT/EP2023/082214 WO2024120801A1 (de) | 2022-12-05 | 2023-11-17 | Bremssystem für ein fahrzeug und radbremsvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4630299A1 true EP4630299A1 (de) | 2025-10-15 |
Family
ID=88874620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23809524.4A Pending EP4630299A1 (de) | 2022-12-05 | 2023-11-17 | Bremssystem für ein fahrzeug und radbremsvorrichtung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20260200444A1 (de) |
| EP (1) | EP4630299A1 (de) |
| JP (1) | JP2025537407A (de) |
| CN (1) | CN120303163A (de) |
| DE (1) | DE102022004536A1 (de) |
| WO (1) | WO2024120801A1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016216593A1 (de) * | 2016-09-02 | 2018-03-08 | Zf Friedrichshafen Ag | Verfahren zum Herstellen einer hydrodynamischen Maschine und hydrodynamische Maschine |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1215013B (de) | 1964-04-02 | 1966-04-21 | Daimler Benz Ag | Dauerbremse fuer Kraftfahrzeuge, insbesondere fuer schwere Lastkraftwagen |
| JP2005291482A (ja) * | 2004-03-31 | 2005-10-20 | Junji Furusho | 新規なトルク伝達・停止装置 |
| DE102008005434A1 (de) | 2008-01-22 | 2009-07-30 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Verfahren zur Betätigung einer nass laufenden Lamellenbremse sowie nass laufende Lamellenbremse |
| JP2010158946A (ja) * | 2009-01-07 | 2010-07-22 | Kurimoto Ltd | 電動車両 |
| EP2577104B1 (de) | 2010-05-25 | 2019-06-12 | ZF Friedrichshafen AG | Drehschwingungsdämpfungsanordnung |
| US11161403B2 (en) | 2012-02-03 | 2021-11-02 | Ge Hybrid Technologies, Llc | Apparatus and method for delivering power in a hybrid vehicle |
| DE102013225205B4 (de) | 2013-12-06 | 2019-01-10 | Zf Friedrichshafen Ag | Getriebe für ein Kraftfahrzeug |
| DE102014006898A1 (de) | 2014-05-09 | 2015-11-12 | Audi Ag | Verfahren zum Betrieb eines Fahrzeugs |
| DE102014209222A1 (de) | 2014-05-15 | 2015-11-19 | Zf Friedrichshafen Ag | Drehschwingungsdämpfungseinheit für den Antriebsstrang eines Kraftfahrzeugs |
| DE102017219476A1 (de) | 2017-06-20 | 2018-12-20 | Zf Friedrichshafen Ag | Drehmomentübertragungsanordnung |
| JP2019173772A (ja) | 2018-03-27 | 2019-10-10 | 本田技研工業株式会社 | 回転電機装置及びこれを備えた車両 |
| DE102022201014A1 (de) | 2022-02-01 | 2023-08-03 | Zf Friedrichshafen Ag | Fahrzeuggetriebe |
| US11940017B2 (en) * | 2022-02-28 | 2024-03-26 | Safran Landing Systems Canada Inc. | Electrorheological brake |
-
2022
- 2022-12-05 DE DE102022004536.2A patent/DE102022004536A1/de active Pending
-
2023
- 2023-11-17 JP JP2025531269A patent/JP2025537407A/ja active Pending
- 2023-11-17 WO PCT/EP2023/082214 patent/WO2024120801A1/de not_active Ceased
- 2023-11-17 EP EP23809524.4A patent/EP4630299A1/de active Pending
- 2023-11-17 CN CN202380083516.4A patent/CN120303163A/zh active Pending
- 2023-11-17 US US19/135,438 patent/US20260200444A1/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016216593A1 (de) * | 2016-09-02 | 2018-03-08 | Zf Friedrichshafen Ag | Verfahren zum Herstellen einer hydrodynamischen Maschine und hydrodynamische Maschine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN120303163A (zh) | 2025-07-11 |
| US20260200444A1 (en) | 2026-07-16 |
| JP2025537407A (ja) | 2025-11-14 |
| WO2024120801A1 (de) | 2024-06-13 |
| DE102022004536A1 (de) | 2024-06-06 |
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