WO2022028790A1 - Antriebseinrichtung für eine elektromechanische bremseinrichtung, bremseinrichtung - Google Patents
Antriebseinrichtung für eine elektromechanische bremseinrichtung, bremseinrichtung Download PDFInfo
- Publication number
- WO2022028790A1 WO2022028790A1 PCT/EP2021/068456 EP2021068456W WO2022028790A1 WO 2022028790 A1 WO2022028790 A1 WO 2022028790A1 EP 2021068456 W EP2021068456 W EP 2021068456W WO 2022028790 A1 WO2022028790 A1 WO 2022028790A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ring gear
- drive device
- gear
- spindle
- bearing
- Prior art date
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
- 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
- B60T13/74—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 electrical assistance or drive
- B60T13/741—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 electrical assistance or drive acting on an ultimate actuator
-
- 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
- B60T13/74—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 electrical assistance or drive
- B60T13/745—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 electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
-
- 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
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
-
- 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
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
- F16D65/183—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes with force-transmitting members arranged side by side acting on a spot type force-applying member
-
- 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
- F16D2121/24—Electric or magnetic using motors
-
- 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
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
- F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
- F16D2125/40—Screw-and-nut
-
- 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
- F16D2125/18—Mechanical mechanisms
- F16D2125/44—Mechanical mechanisms transmitting rotation
- F16D2125/46—Rotating members in mutual engagement
- F16D2125/50—Rotating members in mutual engagement with parallel non-stationary axes, e.g. planetary gearing
-
- 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
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0084—Assembly or disassembly
Definitions
- the invention relates to a drive device for an electromechanical brake device, in particular a brake booster, with an electric motor which has a housing and a rotor shaft which is rotatably mounted in the housing and which is coupled to a transmission having a ring gear, the rotor shaft being supported by at least one rolling element bearing in the housing is mounted, and wherein the rolling element bearing is held in a bearing seat of a bearing cover arranged in the housing.
- the invention also relates to a braking device for a vehicle, in particular a motor vehicle, with a hydraulic pressure generator which is fluidically connected in particular to at least one brake circuit having at least one hydraulically actuatable braking device, and to a drive device for driving the hydraulic pressure generator.
- a hydraulic pressure generator in brake devices, which can be driven by a drive device in order to generate a hydraulic pressure in a brake circuit or brake system, which can be used to carry out one or more braking processes, if required, independently of a brake pedal actuation by a user.
- braking devices are known in which the controllable drive device replaces the conventional vacuum brake booster.
- the drive device according to the invention with the features of claim 1 has the advantage that it is designed to be particularly space-saving, facilitates assembly and reduces assembly and manufacturing costs.
- the bearing cap of the drive device has a ring gear section at a distance from the bearing mount for the rolling element bearing, on which ring gear the ring gear is arranged.
- the result of the drive device according to the invention is that both the rolling element bearing and the ring gear are held by the bearing cover in the housing of the drive device, in particular of the electric motor. While previously a separate bearing for the ring gear is provided, which is welded in particular in the outer ring of the rolling element bearing, the present invention results in easier assembly, in which the complex welding process in particular is eliminated.
- the bearing cap in the ring gear section has at least one, in particular several radial elevations and/or radial depressions spaced apart from one another in the circumferential direction, which interact with radial depressions and/or radial elevations of the ring gear inserted in the ring gear section as an anti-rotation device.
- An anti-rotation lock or anti-rotation lock is thus formed between the bearing cover and the ring gear, which prevents the ring gear from rotating as well. This ensures that the ring gear is held firmly in the housing.
- radial elevations and/or radial depressions of the ring gear on the one hand and the radial depressions or radial elevations of the Ring gear section, on the other hand ensures a simple positive connection in the circumferential direction.
- the radial elevations and/or radial depressions are distributed uniformly over the circumference of the ring gear section.
- the uniform distribution ensures that a uniform power transmission is guaranteed from the ring gear to the ring gear section, which leads to a uniform load and thus a long service life of the drive device.
- the ring gear section forms the ring gear, so that the ring gear is formed in one piece with the bearing cap.
- the ring gear is an integral part of the bearing cap.
- the ring gear forms a planetary gear together with a plurality of planetary gears and a sun gear arranged in a rotationally fixed manner, in particular on the rotor shaft of the electric motor.
- the planetary gear reduces the speed of the electric motor and increases the torque.
- the planetary gears are preferably rotatably mounted on a planetary gear carrier and the planetary gear carrier forms the output shaft of the planetary gear train.
- the gearing is a spindle drive or spindle gearing with an axially displaceably mounted spindle and with a rotatably mounted spindle wheel that meshes with the spindle by means of helical gearing.
- Ring gear centered on the spindle drive or transmission, for example on a bearing cap of the transmission or spindle drive, which is fixed to the housing.
- the ring gear preferably has an axially protruding centering section, which can be or is pushed axially onto the spindle gear, in particular onto a cylindrical casing wall section of the bearing cap.
- the centering section preferably has a plurality of crushing ribs projecting radially inwards or in the direction of the spindle gear.
- the ring gear also has a plurality of evenly distributed crushing ribs on its outer casing wall, which interact in particular with the bearing cover of the drive device.
- the braking device according to the invention with the features of claim 8 is characterized by the inventive design of the drive device. This results in the advantages already mentioned above.
- Figure 1 shows an exemplary braking device in a simplified longitudinal sectional view
- FIG. 2 shows a perspective detailed view of the braking device.
- FIG. 1 shows, in a simplified sectional illustration, an advantageous braking device 1 for a motor vehicle not shown in detail here.
- the braking device 1 has a drive device 2 with an electric motor, of which only the rotor shaft 3 and a housing 4 are shown in FIG.
- the rotor shaft 3 is rotatably mounted in the housing 4 and in particular carries a rotor which interacts with a stator fixed to the housing, so that when current is supplied to the stator or to a drive winding of the stator a torque is exerted on the rotor and thus on the rotor shaft 3, through which the braking device 1 is to be driven.
- the brake device 1 is in particular an electromechanical brake booster, in which the rotational energy of the rotor shaft 3 is intended to be converted into translational energy for displacing a hydraulic piston.
- the drive device 2 is designed to drive a master brake cylinder of a brake system.
- a bearing cap 5 is arranged in the housing 4 and extends essentially transversely through the housing 4 and rests at least in regions on an inside of the housing 4 and is welded, clamped, screwed or glued to the housing 4, for example.
- the bearing cap 5 is cup-shaped, having a plurality of sections in the axial extension which have different inner diameters.
- the bearing cover 5 has a first section, which forms a bearing seat 6 for a roller bearing 7, through which the rotor shaft 3 is rotatably mounted in the bearing cover 5 and thus in the housing 4.
- the bearing seat 6 thus has an inner diameter which is in particular slightly smaller than the outer diameter of the outer ring of the roller bearing 7 so that there is a press fit between the roller bearing 7 and the bearing cover 5 in the bearing seat 6 .
- a ring gear section 8 adjoins the bearing mount 6, which has an inner diameter that is significantly larger than the inner diameter of the bearing mount 6.
- a ring gear 9 of a planetary gear 10 is arranged in the ring gear section 8.
- the ring gear 9 is connected in a rotationally fixed manner to the bearing cover 5 by means of an anti-rotation device 11, so that the ring gear 9 cannot rotate as well.
- the planetary gear 10 also has a plurality of planetary gears 14, as shown in Figure 1, which are rotatably mounted on a planetary gear carrier 15, which is itself also rotatably mounted, in particular about the axis of rotation of rotor shaft.
- the planet gears 14 are in mesh with the ring gear 9 and with a sun gear 20 that is non-rotatably arranged on the rotor shaft 3.
- Figure 2 shows the drive device 2 in the area of the planetary gear 10 in an axial plan view.
- the ring gear 9 has on its outer circumference several, in this case four, radial elevations 12 which are arranged at equal distances from one another and which form-fit in correspondingly designed and arranged radial depressions 13 of the bearing cover 5 and preferably at least essentially free of play, particularly preferably pressed.
- the radial projections 12 lying in the radial depressions 13 ensure that the ring gear 9 is arranged in a rotationally fixed manner with the bearing cover 5 and thus fixed to the housing. This means that only the planetary gears 14 together with the planetary gear carrier 15 can rotate in the ring gear 9 when they are driven by the sun gear 20 .
- the torque support or torque entrainment takes place axially, for example by means of hot caulking.
- the planetary gear carrier 15 is formed by a spindle gear 16 of a spindle gear 17, which also has a spindle 18 that is operatively connected to the spindle gear 16 and is mounted for axial displacement, as indicated by a double arrow in Figure 1, which is connected in particular to a piston of the Master cylinder is coupled to its displacement.
- Ring gear 9 has an axially protruding centering section 19 on its end face facing spindle wheel 16 , the inside diameter of which corresponds at least essentially to the outside diameter of a cylindrical jacket wall section of a bearing cap 21 of spindle gear 17 .
- the spindle gear 17 has the essentially cup-shaped bearing cap 21 which is fixed to the housing and carries a rolling element bearing 22 for the rotatable mounting of the spindle wheel 16 and the inner ring of the roller bearing 22 sits on the outer surface of the spindle wheel 16, so that the spindle wheel 16 is advantageously rotatably mounted with little wear.
- the centering section 19 bears in particular radially on the outer wall of the casing wall section of the bearing cap 21, in particular under radial prestress, as a result of which the ring gear 9 is advantageously centered or aligned and held on the bearing cap 21 and thus on the spindle gear 17. This improves the robustness and functionality of the braking device 1 and the drive device 2 respectively.
- FIG. 3 shows the ring gear 9 in the region of the centering section 19 in an enlarged perspective view.
- the centering section 19 has, in particular, a plurality of crushing ribs 23 distributed over the circumference and protruding radially inwards.
- the crushing ribs 23 protrude only slightly from the inside of the centering section 19 and are designed to be plastically and/or elastically deformed when pushed onto the bearing cap 21 in order to thereby ensure a particularly secure fixing and centering of the ring gear 9 on the bearing cap 21 .
- a plurality of evenly distributed crushing ribs are also formed on an outer casing wall of the ring gear 9 , in particular formed in one piece with the ring gear 9 , which interact with the bearing cap 5 accordingly for centering and mounting the ring gear 9 on the bearing cap 5 .
- This allows the electric motor or the rotor shaft 3 and the sun wheel 20 to be centered in an advantageous manner.
- ring gear 9 is formed in one piece with bearing cover 5, which means that additional anti-twist device 10 can be dispensed with. This further reduces the number of parts and simplifies assembly.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Retarders (AREA)
- General Details Of Gearings (AREA)
- Braking Systems And Boosters (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023506293A JP2023537312A (ja) | 2020-08-06 | 2021-07-05 | 電気機械式ブレーキ装置のための駆動装置、ブレーキ装置 |
CN202180057709.3A CN116137847A (zh) | 2020-08-06 | 2021-07-05 | 用于机电的制动装置的驱动装置、制动装置 |
US18/040,295 US20230286482A1 (en) | 2020-08-06 | 2021-07-05 | Drive device for an electromechanical brake device, brake device |
KR1020237007362A KR20230043997A (ko) | 2020-08-06 | 2021-07-05 | 전기 기계식 제동 장치를 위한 구동 장치, 제동 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020209947.2A DE102020209947A1 (de) | 2020-08-06 | 2020-08-06 | Antriebseinrichtung für eine elektromechanische Bremseinrichtung, Bremseinrichtung |
DE102020209947.2 | 2020-08-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022028790A1 true WO2022028790A1 (de) | 2022-02-10 |
Family
ID=76958943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/068456 WO2022028790A1 (de) | 2020-08-06 | 2021-07-05 | Antriebseinrichtung für eine elektromechanische bremseinrichtung, bremseinrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US20230286482A1 (de) |
JP (1) | JP2023537312A (de) |
KR (1) | KR20230043997A (de) |
CN (1) | CN116137847A (de) |
DE (1) | DE102020209947A1 (de) |
WO (1) | WO2022028790A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019217551A1 (de) * | 2019-11-14 | 2021-05-20 | Robert Bosch Gmbh | Elektromechanisch antreibbarer Bremsdruckerzeuger |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000029760A2 (en) * | 1998-11-17 | 2000-05-25 | Skf Engineering And Research Centre B.V. | Screw actuator comprising a multi-purpose sleeve, and brake calliper |
WO2018099636A1 (de) * | 2016-11-30 | 2018-06-07 | Robert Bosch Gmbh | Elektrohydraulischer fremdkraft-druckerzeuger |
DE102017204765A1 (de) * | 2017-03-22 | 2018-10-11 | Audi Ag | Verfahren zum Betreiben eines Bremssystems für ein Kraftfahrzeug sowie entsprechendes Bremssystem |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014212409A1 (de) * | 2014-06-27 | 2015-12-31 | Robert Bosch Gmbh | Druckerzeuger für eine hydraulische Fahrzeugbremsanlage |
-
2020
- 2020-08-06 DE DE102020209947.2A patent/DE102020209947A1/de active Pending
-
2021
- 2021-07-05 US US18/040,295 patent/US20230286482A1/en active Pending
- 2021-07-05 WO PCT/EP2021/068456 patent/WO2022028790A1/de active Application Filing
- 2021-07-05 CN CN202180057709.3A patent/CN116137847A/zh active Pending
- 2021-07-05 JP JP2023506293A patent/JP2023537312A/ja active Pending
- 2021-07-05 KR KR1020237007362A patent/KR20230043997A/ko active Search and Examination
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000029760A2 (en) * | 1998-11-17 | 2000-05-25 | Skf Engineering And Research Centre B.V. | Screw actuator comprising a multi-purpose sleeve, and brake calliper |
WO2018099636A1 (de) * | 2016-11-30 | 2018-06-07 | Robert Bosch Gmbh | Elektrohydraulischer fremdkraft-druckerzeuger |
DE102017204765A1 (de) * | 2017-03-22 | 2018-10-11 | Audi Ag | Verfahren zum Betreiben eines Bremssystems für ein Kraftfahrzeug sowie entsprechendes Bremssystem |
Also Published As
Publication number | Publication date |
---|---|
DE102020209947A1 (de) | 2022-02-10 |
JP2023537312A (ja) | 2023-08-31 |
CN116137847A (zh) | 2023-05-19 |
KR20230043997A (ko) | 2023-03-31 |
US20230286482A1 (en) | 2023-09-14 |
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