WO2021228443A1 - Spindeltriebeinheit für einen elektromechanischen bremsdruckerzeuger, elektromechanischer bremsdruckerzeuger - Google Patents
Spindeltriebeinheit für einen elektromechanischen bremsdruckerzeuger, elektromechanischer bremsdruckerzeuger Download PDFInfo
- Publication number
- WO2021228443A1 WO2021228443A1 PCT/EP2021/053144 EP2021053144W WO2021228443A1 WO 2021228443 A1 WO2021228443 A1 WO 2021228443A1 EP 2021053144 W EP2021053144 W EP 2021053144W WO 2021228443 A1 WO2021228443 A1 WO 2021228443A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive unit
- spindle drive
- adapter sleeve
- pressure generator
- spindle
- 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
- B60T13/745—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
-
- 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
- B60T13/12—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 liquid
- B60T13/14—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 liquid using accumulators or reservoirs fed by pumps
- B60T13/148—Arrangements for pressure supply
-
- 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
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
-
- 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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
-
- 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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/82—Brake-by-Wire, EHB
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/81—Braking systems
Definitions
- the invention relates to a spindle drive unit for an electromechanical brake pressure generator in a hydraulic brake system of a vehicle.
- the invention also relates to an electromechanical brake pressure generator with a spindle drive unit according to the invention.
- the electromechanical brake pressure generator should be able to be used not only to provide an auxiliary braking force, but also to generate the braking force on its own in so-called “brake-by-wire” systems. In this refinement, it can be used in particular to generate braking force or braking pressure in autonomously driving vehicles.
- a spindle drive unit for an electromechanical brake pressure generator is usually arranged together with the electric motor in a common housing.
- the drive shaft of the electric motor can be arranged axially parallel or coaxially to the piston.
- the center distance between the drive shaft and the spindle drive unit is bridged with the aid of a gear drive.
- this can comprise an intermediate wheel. That Intermediate gear enables the diameters of the first and second gears to be reduced.
- electronics, valves and / or sensors of the electromechanical brake pressure generator can be accommodated in the housing.
- the present invention is based on the object of simplifying the assembly of an electromechanical brake pressure generator, in particular with an axially parallel arrangement of the drive shaft and spindle drive. In addition, a particularly compact arrangement is to be created.
- a spindle drive unit is proposed for an electromechanical brake pressure generator in a hydraulic brake system of a vehicle, with the aid of which the rotational movement of a drive shaft of an electric motor can be converted into a translational movement of a piston coupled to the spindle drive unit.
- the spindle drive unit and / or the piston is or are at least partially surrounded by an adapter sleeve which has an external thread for screwing into a housing of the brake pressure generator.
- the spindle drive unit, the piston and the adapter sleeve can be preassembled and, as a preassembled assembly, can be easily inserted or screwed into the housing of the brake pressure generator.
- the proposed spindle drive unit reduces the complexity when assembling the brake pressure generator. This is accompanied by a cost advantage.
- the screw connection between the adapter sleeve and the housing also fixes the pre-assembled assembly in the housing, which is able to absorb high tensile forces.
- the fixation requires over the screw connection requires a comparatively small installation space in the radial direction, in particular in comparison to a clip connection, which requires a C-ring as an additional component.
- the center distance between the spindle drive unit and the drive shaft of the electric motor can be reduced. This in turn makes it possible to dispense with an intermediate gear, so that further components can be saved.
- the spindle drive unit and the drive shaft are preferably arranged axially parallel, since the advantages of the invention are particularly evident here.
- a roller or ball bearing is preferably placed, preferably pressed on, on the adapter sleeve.
- the roller or ball bearing forms a further component of the preassembled assembly and, together with the spindle drive unit, can be inserted into the housing via the adapter sleeve and fixed in the housing.
- the press connection is preferably established via an inner ring of the roller or ball bearing.
- the press fit of the roller or ball bearing can also transmit tensile forces acting on the piston.
- the roller or ball bearing is preferably supported in the axial direction, that is to say in the main force direction, on a stop of the adapter sleeve.
- the axial support provides additional positional security.
- the adapter sleeve can have an annular collar, for example.
- a clip ring can be used to form the stop.
- the spindle drive unit for coupling with the drive shaft preferably for direct or indirect coupling with a pinion of the drive shaft, comprises a gear.
- the gear forms a further component of the preassembled assembly, so that the assembly of the brake pressure generator is further simplified.
- the adapter sleeve have an inner contour with at least one groove.
- the torque support in a spindle drive is due to the principle of conversion the rotational movement of the drive shaft into a translational movement of the piston is required.
- the number of grooves can also be two, three or four.
- the torque to be supported is then distributed over the several grooves.
- the grooves are advantageously arranged at the same angular distance from one another in order to evenly distribute the torque to be supported.
- a spindle or a spindle nut of the spindle drive unit have an outer contour with at least one wing that engages in the groove of the adapter sleeve.
- the at least one wing engaging in the groove of the adapter sleeve causes a form fit in the direction of rotation between the spindle or the spindle nut and the adapter sleeve, so that the torque support is achieved in this way.
- the spindle is driven, the at least one wing is formed on the spindle nut.
- the spindle has the at least one wing.
- the piston is non-rotatably connected to a spindle of the spindle drive unit and has an outer contour with at least one wing that engages in the groove.
- the number and shape of the wings - regardless of whether they are formed on the spindle, the spindle nut or on the piston - preferably correspond to the number and shape of the grooves in the adapter sleeve. Furthermore, the wings are preferably also arranged at the same angular distance from one another.
- the adapter sleeve is made of metal, in particular steel or aluminum.
- a metallic material such as steel or aluminum, enables the formation of a precisely fitting external thread, so that the desired fixing of the adapter sleeve and thus the preassembled assembly in the housing can be achieved.
- the housing is usually also made of a metallic material, in particular steel or aluminum.
- the drive-side end of the spindle drive unit has a cap which has at least one opening at the end for the engagement of an assembly tool.
- the cap can For example, they can be used to hold individual, preferably all, components of the preassembled assembly together in a captive manner. This ensures that the assembly can be used as a unit in the housing of the brake pressure generator. This further simplifies the assembly of the brake pressure generator.
- the cap protects the spindle drive unit from the ingress of harmful particles.
- the cap preferably has a collar which encompasses not only the end of the spindle drive unit, but also the adapter sleeve and / or the roller or ball bearing - at least in sections.
- the number and the angular position of the at least one opening provided on the end face in the cap preferably correspond to the number and the angular position of the at least one groove in the adapter sleeve. This ensures the accessibility of the at least one groove in the adapter sleeve. Because in order to screw the adapter sleeve or the pre-assembled assembly into the housing of the brake pressure generator, the assembly tool must be inserted through the at least one end opening of the cap into the at least one groove in the adapter sleeve.
- an electromechanical brake pressure generator for a hydraulic brake system of a vehicle which comprises a spindle drive unit according to the invention.
- the spindle drive unit is screwed into a housing of the brake pressure generator via the adapter sleeve, in which the electric motor is also accommodated.
- the spindle drive unit and a drive shaft of the electric motor are preferably arranged axially parallel.
- the advantages of the spindle drive unit according to the invention come into their own.
- a brake pressure generator of compact construction can be created that is easy to assemble.
- the spindle drive unit screwed into the housing via the adapter sleeve is secured against loosening of the screw connection by the direction of rotation of the external thread of the adapter sleeve and / or by an additional anti-rotation lock, for example in the form of a coating of the external thread.
- an additional anti-rotation lock for example in the form of a coating of the external thread.
- the additional anti-rotation lock can be implemented, for example, with the aid of a lacquer and / or an adhesive, which is preferably applied to the external thread of the adapter sleeve before the adapter sleeve is screwed into the housing.
- Fig. 1 is a longitudinal section through an electromechanical
- FIGS. 2 a) and b) each show a perspective view of the adapter sleeve of the spindle drive unit of FIG. 1,
- FIGS. 1 and 3 shows a perspective illustration of the spindle nut of the spindle drive unit of FIGS. 1 and
- FIG. 4 shows a perspective illustration of the spindle drive unit of FIG. 1. Detailed description of the drawings
- the electromechanical brake pressure generator 2 shown in FIG. 1 comprises a housing 8 in which a spindle drive unit 1 according to the invention with a piston 5 and an electric motor 4 with a drive shaft 4 are accommodated.
- the piston 5 and the drive shaft 3 are arranged axially parallel. This means that a longitudinal axis Ai of the piston 5 and a longitudinal axis A2 of the drive shaft 4 are aligned in parallel.
- the piston 5 is designed as a hollow cylinder closed at the end.
- the drive shaft 4 is connected to a pinion 11 which meshes with a gear 12 of the spindle drive unit 1, so that the rotational movement of the drive shaft 4 can be transmitted to the spindle drive unit 1 via this.
- the spindle drive unit 1 has a spindle 14 and a Spindle nuts 15, which are received in the hollow cylinder-shaped piston 5 in the illustrated embodiment.
- the piston 5 is in turn surrounded at least in sections by an adapter sleeve 6 with an external thread 7, via which the spindle drive unit 1 is screwed into the housing 8 of the brake pressure generator 2.
- the spindle drive unit 1 with spindle 14 and spindle nut 15, the piston 5 and the adapter sleeve 6 form an assembly that is preassembled and inserted or screwed into the housing 8 of the brake pressure generator 2 as a unit. At the same time, the assembly is fixed in the housing 8 via the screw connection.
- the preassembled assembly has further components. These include a ball bearing 9, which is pressed onto the adapter sleeve 6, as well as a cap 17.
- the ball bearing 9 pressed onto the adapter sleeve 6 is supported in the axial direction on a stop 10, which in the present case is formed by an annular collar 19 of the adapter sleeve 6 (see FIG also Figures 2a) and 2b)).
- the cap 17 surrounds the ball bearing 9 and the end of the spindle drive unit 1 protruding from the housing 8, so that it is protected by the cap 17.
- all components of the preassembled assembly are held captive via the cap 17, which facilitates the insertion or screwing into the housing 8. It is preferably screwed in with the aid of an assembly tool (not shown) which engages through openings 18 in the cap 17 in grooves 13 in the adapter sleeve 6 (see FIGS. 2a and 4).
- Torque support of the spindle drive unit 1 is realized at the same time via the grooves 13 of the adapter sleeve 6.
- the spindle nut 15 has an outer contour with wings 16 (see FIG. 3) which engage in the grooves 13 of the adapter sleeve 6.
- the spindle drive unit 1 according to the invention including all components of the preassembled assembly is shown in an individual illustration in FIG. 4. This means that it can also include the gear 12.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Transmission Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Braking Systems And Boosters (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020227042898A KR20230009930A (ko) | 2020-05-12 | 2021-02-10 | 전기 기계식 제동압 발생기용 스핀들 구동 유닛 및 전기 기계식 제동압 발생기 |
US17/796,260 US20230070222A1 (en) | 2020-05-12 | 2021-02-10 | Spindle drive unit for an electromechanical brake pressure generator, electromechanical brake pressure generator |
CN202180034851.6A CN115485175A (zh) | 2020-05-12 | 2021-02-10 | 一种用于机电的制动压力产生器的主轴驱动单元、一种机电的制动压力产生器 |
JP2022566725A JP2023524725A (ja) | 2020-05-12 | 2021-02-10 | 電気機械式のブレーキ圧発生器用のスピンドル駆動ユニット、電気機械式のブレーキ圧発生器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020205968.3 | 2020-05-12 | ||
DE102020205968.3A DE102020205968A1 (de) | 2020-05-12 | 2020-05-12 | Spindeltriebeinheit für einen elektromechanischen Bremsdruckerzeuger, elektromechanischer Bremsdruckerzeuger |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021228443A1 true WO2021228443A1 (de) | 2021-11-18 |
Family
ID=74587046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/053144 WO2021228443A1 (de) | 2020-05-12 | 2021-02-10 | Spindeltriebeinheit für einen elektromechanischen bremsdruckerzeuger, elektromechanischer bremsdruckerzeuger |
Country Status (6)
Country | Link |
---|---|
US (1) | US20230070222A1 (de) |
JP (1) | JP2023524725A (de) |
KR (1) | KR20230009930A (de) |
CN (1) | CN115485175A (de) |
DE (1) | DE102020205968A1 (de) |
WO (1) | WO2021228443A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3034033A1 (de) | 2014-12-16 | 2016-06-22 | Nobel Biocare Services AG | Zahnimplantat |
CA3119714A1 (en) * | 2018-11-12 | 2020-05-22 | Nobel Biocare Services Ag | Dental implant or component having a protective layer |
US20230192055A1 (en) * | 2021-12-16 | 2023-06-22 | ZF Active Safety US Inc. | Anti-rotation sleeve for brake system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6079797A (en) * | 1996-08-16 | 2000-06-27 | Kelsey-Hayes Company | Dual action ball screw pump |
DE10255198A1 (de) * | 2001-12-20 | 2003-07-10 | Continental Teves Ag & Co Ohg | Elektronisch regelbares Bremssystem für Kraftfahrzeuge |
-
2020
- 2020-05-12 DE DE102020205968.3A patent/DE102020205968A1/de active Pending
-
2021
- 2021-02-10 CN CN202180034851.6A patent/CN115485175A/zh active Pending
- 2021-02-10 KR KR1020227042898A patent/KR20230009930A/ko active Search and Examination
- 2021-02-10 US US17/796,260 patent/US20230070222A1/en active Pending
- 2021-02-10 JP JP2022566725A patent/JP2023524725A/ja active Pending
- 2021-02-10 WO PCT/EP2021/053144 patent/WO2021228443A1/de active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6079797A (en) * | 1996-08-16 | 2000-06-27 | Kelsey-Hayes Company | Dual action ball screw pump |
DE10255198A1 (de) * | 2001-12-20 | 2003-07-10 | Continental Teves Ag & Co Ohg | Elektronisch regelbares Bremssystem für Kraftfahrzeuge |
Also Published As
Publication number | Publication date |
---|---|
CN115485175A (zh) | 2022-12-16 |
KR20230009930A (ko) | 2023-01-17 |
US20230070222A1 (en) | 2023-03-09 |
DE102020205968A1 (de) | 2021-11-18 |
JP2023524725A (ja) | 2023-06-13 |
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