EP4532278A1 - Betätigungseinrichtung für ein bremssystem, verfahren zum herstellen einer betätigungseinrichtung für ein bremssystem - Google Patents
Betätigungseinrichtung für ein bremssystem, verfahren zum herstellen einer betätigungseinrichtung für ein bremssystemInfo
- Publication number
- EP4532278A1 EP4532278A1 EP23727874.2A EP23727874A EP4532278A1 EP 4532278 A1 EP4532278 A1 EP 4532278A1 EP 23727874 A EP23727874 A EP 23727874A EP 4532278 A1 EP4532278 A1 EP 4532278A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotation
- threaded spindle
- housing
- actuating device
- stop
- 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
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2454—Brakes; Rotational locks
Definitions
- Actuating device for a brake system method for producing an actuating device for a brake system
- the invention relates to an actuating device for a brake system, which has an actuable master brake cylinder, with a transmission device that has a displaceable threaded spindle, the master brake cylinder being actuable by displacing the threaded spindle, with an electric motor for driving the transmission device, and with a housing, in in which the threaded spindle is at least partially arranged, wherein a rotation locking element is connected to the threaded spindle in a rotationally fixed manner, and wherein the housing has at least one rotation counter-stop which cooperates with a rotation stop of the rotation locking element to form an anti-rotation lock for the threaded spindle.
- the invention also relates to a method for producing an actuating device for a brake system, wherein a housing with at least one rotation counterstop and a gear device with a displaceable threaded spindle are provided, wherein a rotation locking element is connected to the threaded spindle in a rotationally fixed manner, the gear device being arranged in such a way that the Threaded spindle is at least partially arranged in the housing and a rotation stop of the rotation locking element to form an anti-rotation lock for the threaded spindle cooperates with the rotation counterstop of the housing, and wherein an electric motor is operatively connected to the transmission device in such a way that the transmission device can be driven by the electric motor.
- a hydraulic brake system of a motor vehicle typically has several friction brake devices that are hydraulically connected to a master brake cylinder of the brake system. If the master brake cylinder is actuated, a hydraulic fluid is displaced into the slave cylinder of the friction brake devices, so that the friction brake devices then generate a friction brake torque.
- An actuating device is typically present to actuate the master brake cylinder. With the increasing electrification of motor vehicles, actuating devices of braking systems are also becoming increasingly electrified.
- An actuating device of the type mentioned is known, for example, from the published patent application DE 10 2020 208 764 A1.
- the actuating device has a gear device with a displaceable threaded spindle.
- the transmission device can be driven by an electric motor of the actuating device.
- the master brake cylinder can be actuated by moving the threaded spindle.
- the actuating device also has a housing with at least one rotation counterstop.
- the threaded spindle is at least partially arranged in the housing.
- the rotation counterstop of the housing cooperates with a rotation stop of the rotation locking element to form an anti-rotation device for the threaded spindle.
- the actuating device is characterized by the features of claim 1 in that the housing is an extrusion profile, and that the rotation counterstop is formed by an extrusion structure of the extrusion profile.
- An extrusion profile is a component manufactured by extrusion or extrusion.
- An extrusion profile has the same cross-sectional area over its entire longitudinal extent, apart from any post-processing that may have been carried out on the extrusion profile.
- the cross-sectional area of an extrusion profile corresponds in terms of its shape to the opening of the extrusion tool used to produce the extrusion profile has been used.
- Extrusion profiles can typically be produced inexpensively, so that the manufacturing costs for the actuating device can be reduced by designing the housing as an extrusion profile.
- An extrusion structure is a structure of the extrusion profile manufactured by extrusion. Structures suitable for forming the rotary counterstop can be easily realized by extrusion. Because the rotary counterstop is formed by an extrusion structure, complex post-processing to form the rotary counterstop is not necessary. This means that the costs for producing the actuation device can be further reduced.
- the housing or the extrusion profile is particularly preferably made of aluminum.
- the threaded spindle is at least partially arranged in the housing or the extrusion profile. The threaded spindle preferably projects into the housing, so that the threaded spindle is only partially arranged in the housing. Alternatively, the threaded spindle is arranged overall in the extrusion profile.
- the housing is preferably tubular and therefore has a circumferential jacket wall which defines or encloses the interior of the housing.
- the anti-rotation element is preferably designed separately from the threaded spindle and attached to the threaded spindle. Alternatively, the anti-rotation element is preferably formed in one piece with the threaded spindle. The anti-rotation element is preferably arranged on an end of the threaded spindle facing the master brake cylinder.
- a displacement axis of the threaded spindle is aligned perpendicular to the cross-sectional area of the extrusion profile. This allows the effective connection of the threaded spindle to the master brake cylinder to be easily implemented.
- the master brake cylinder is preferably arranged on an end face of the extrusion profile.
- the transmission device has a spindle gear, the spindle gear having the threaded spindle and a rotatably mounted spindle nut, the spindle nut rotating in a first direction of rotation and in one of the first directions of rotation is rotatable in the opposite second direction of rotation, and wherein the anti-rotation device is designed to block rotation of the threaded spindle both in the first direction of rotation and in the second direction of rotation.
- the anti-rotation device ensures that the threaded spindle can be displaced along the displacement axis both in a first direction and in a second direction opposite to the first direction by rotating the spindle nut depending on the direction of rotation of the spindle nut.
- the extrusion profile has at least one first rotary counter-stop oriented counter to the first direction of rotation and at least one second rotary counter-stop oriented counter to the second direction of rotation, the first rotary counter-stop interacting with a first rotary stop of the anti-rotation element, and wherein the second rotary counter-stop cooperates with a second rotary stop of the anti-rotation element.
- the first rotational counterstop and the second rotational counterstop are part of the same extrusion structure of the extrusion profile.
- the first rotational counterstop and the second rotational counterstop are preferably part of different extrusion structures of the extrusion profile.
- the extrusion profile has a plurality of first rotary counterstops spaced apart from one another in the circumferential direction of the extrusion profile and/or a plurality of second rotary counterstops spaced apart from one another in the circumferential direction of the extrusion profile.
- the groove extends axially through the extrusion profile in relation to the displacement axis of the threaded spindle.
- the extrusion profile preferably has a plurality of grooves extending through the extrusion profile and spaced apart from one another in the circumferential direction of the extrusion profile. Particularly preferably there are two grooves which are diametrically opposed to one another.
- the rotary counterstop preferably has a sliding coating.
- the anti-friction coating enables low-friction guidance of the anti-rotation element and thus the threaded spindle in the extrusion profile.
- the anti-friction coating is a coating made of a plastic, in particular PTFE.
- the anti-rotation element has a sliding shoe, so that the sliding shoe forms the rotation stop.
- the sliding shoe can also be used to achieve low-friction guidance of the anti-rotation element and thus the threaded spindle in the extrusion profile.
- the sliding shoe is preferably made of plastic. If the anti-rotation element has the sliding shoe, the previously mentioned anti-friction coating is preferably omitted.
- both the threaded spindle and the pressure force transmitter are arranged or aligned coaxially with hydraulic pistons which are displaceably mounted in the master brake cylinder.
- a jacket wall of the extrusion profile has a flat first mounting surface, and that a control device of the actuating device is arranged on the first mounting surface. Because the first mounting surface is flat, it is particularly suitable for arranging a control device. In addition, flat mounting surfaces can be easily achieved by extrusion.
- the control device is preferably designed to control the electric motor.
- the jacket wall has a flat second mounting surface and that the electric motor is arranged on the second mounting surface. Because the second mounting surface is flat, it is particularly suitable for arranging the electric motor. In addition, flat mounting surfaces can be easily achieved by extrusion.
- the jacket wall preferably has at least one opening.
- the breakthrough is preferably formed by reworking the extrusion profile. For example, the breakthrough is milled into the jacket wall.
- the breakthrough of the jacket wall in the actuating device can fulfill various tasks.
- the jacket wall preferably has an opening into which a sensor is inserted, which is designed to monitor the sliding positions of the threaded spindle and the pressure force transmitter.
- the jacket wall preferably has at least one opening through which a transmission shaft of the transmission device is rotatably mounted.
- the jacket wall preferably has at least one opening through which at least one electrically conductive motor phase supply line protrudes.
- Figure 1 is a perspective view of an actuating device for a brake system
- Figure 3 shows a housing of the actuating device
- the actuating device 1 also has a drive unit 10 which is arranged on the housing 3.
- the drive unit 10 has an electric motor 12, which is arranged in a motor housing 11 and is therefore not visible in Figure 1.
- the actuating device 1 has a control device 13.
- the control unit 13 is arranged on the housing 3 on a side of the housing 3 facing away from the drive unit 10.
- the control device 13 is designed to control the electric motor 12.
- FIG. 2 shows a longitudinal section of the actuating device 1.
- the actuating device 1 has a gear device 16.
- the transmission device 16 is operatively connected to the electric motor 12 in such a way that the transmission device 16 can be driven by the electric motor 12.
- the transmission device 16 has a slidably mounted threaded spindle 17.
- the threaded spindle 17 protrudes through an opening 18 in the housing part 7 into the housing interior 5 of the housing 3 and is therefore partially arranged in the housing interior 5 of the housing 3.
- the threaded spindle 17 can be displaced along a displacement axis in a first direction 19 and in a second direction 20 that is opposite to the first direction 19.
- the directions 19 and 20 are oriented perpendicular to the cross-sectional area of the housing 3.
- a rotation locking element 24 is present, which is attached to the threaded spindle 17, in the present case on an end of the threaded spindle 17 facing the master brake cylinder 14.
- the rotation locking element 24 is formed in one piece with the threaded spindle 17.
- the anti-rotation element 24 cooperates with the housing 3 to form the anti-rotation device 23, as will be explained in more detail below.
- a cup-shaped thrust body 25 is attached to the anti-rotation element 24.
- the actuating device 1 also has a compressive force transmitter 26 which is displaceably mounted relative to the threaded spindle 17, the compressive force transmitter 26 also passing through the opening 18 into the Housing interior 5 protrudes and is therefore partially arranged in the housing interior 5 of the housing 3.
- the pressure force transmitter 26 is displaceable in the first direction 19 and in the second direction 20.
- the pressure force transmitter 26 is mounted in an opening 27 in the threaded spindle 17.
- the pressure force transmitter 26 is designed in several parts.
- the pressure force transmitter 26 has a rod-shaped section 28 which is arranged in the opening 27.
- the pressure force transmitter 26 has a pressure cap 29, which is arranged at an end of the pressure force transmitter 26 facing the master brake cylinder 14.
- the pressure cap 29 is attached to the rod-shaped section 28, in the present case by crimping.
- An end of the pressure force transmitter 26 facing away from the master brake cylinder 14 is connected to an input rod 30, so that the pressure force transmitter 26 can be displaced by the input rod 30.
- the pressure force transmitter 26 is connected to the input rod 30 by a ball joint 31.
- An end of the input rod 30 facing away from the pressure force transmitter 26 is attached to a brake pedal, not shown.
- the master brake cylinder 14 can be actuated both by moving the threaded spindle 17 and by moving the pressure force transmitter 26.
- An actuation of the master brake cylinder 14 means that the hydraulic pistons 15 are displaced in the first direction 19. If the actuating device 1 is installed as intended in the brake system 2, a hydraulic fluid is thereby displaced from the master brake cylinder 14 into the slave cylinder of the friction brake devices, so that the friction brake devices then generate a friction brake torque.
- the threaded spindle 17 and the pressure force transmitter 26 can be or are operatively connected to the hydraulic piston 15 by a coupling element 32.
- the coupling element 32 has an elastically deformable coupling disk 33 and a rigid push rod 34.
- the anti-rotation element 24 cooperates with the housing 3 to form the anti-rotation device 23.
- the housing 3 has a plurality of grooves 35 which extend inside the housing 5 through the jacket wall 4 of the housing 3.
- the grooves 35 are aligned perpendicular to the cross-sectional area of the housing 3 and thus extend in the axial direction with respect to the displacement axis of the threaded spindle 17.
- the grooves 35 are each formed by a base 36, a first rotary counter-stop 37 and a second rotary counter-stop 38, the rotary counter-stops 37, 38 being opposite one another.
- the anti-rotation element 24 has a number of radial projections 39 corresponding to the number of grooves 35. Each of the radial projections 39 engages radially in a different one of the grooves 35 to form the anti-rotation device 23.
- the radial projections 39 each have a first rotation stop 40 and a second rotation stop 41.
- the first rotation stops 40 lie opposite the first rotation counter-stops 37 of the grooves 35.
- the second rotation stops 41 lie opposite the second rotation counter-stops 38 of the grooves 35.
- the extrusion profile 3 or the housing 3 also has several structures that are not manufactured by extrusion, but rather by post-processing the extrusion profile 3.
- the housing 3 has a housing step 45 milled into the jacket wall 4.
- the jacket wall 5 has several openings 46, 47, 48, which are formed in the area of a first mounting surface 49 of the jacket wall 4.
- the control device 13 is arranged on the first mounting surface 49 when the actuating device 1 is assembled as intended.
- a first opening 46 of the openings 46, 47, 48 is rectangular in shape. If the actuating device 1 is assembled as intended, a sensor is arranged in the first opening 46 and is designed to monitor the sliding positions of the threaded spindle 17 and the pressure force transmitter 26.
- a second opening 47 of the openings 46, 47, 48 is circular. If the actuating device 1 is assembled as intended, a gear shaft 50 of the gear device 17, which is designed as a worm shaft 50, projects from the housing interior 6 into the opening 47 or through the opening 47. In particular, the transmission shaft 50 is rotatably mounted by a bearing surface 51 delimiting the second opening 47. For example, there is a pivot bearing that acts between the gear shaft 50 and the bearing surface 51.
- a third opening 48 of the openings 46, 47, 48 is also circular. If the actuating device 1 is assembled as intended, several electrically conductive motor phase supply lines 52 protrude through the third opening 48 into the housing interior 5.
- the extrusion profile 3 or the housing 3 also has a fourth opening 53 and a fifth opening 54.
- the openings 53 and 54 are formed in the area of a second mounting surface 55 of the jacket wall 4.
- the fourth breakthrough 53 is aligned with the second breakthrough 47.
- the gear shaft 50 protrudes from the housing interior 5 into the motor housing 11 through the fourth breakthrough 53.
- the transmission shaft 50 protrudes through the housing 3.
- the fifth breakthrough 54 is aligned with the third breakthrough 48.
- the motor phase leads 52 protrude into the motor housing 11 through the fifth breakthrough 54.
- the motor phase supply lines 52 also protrude through the housing 3.
- the motor phase leads 52 are electrically connected to a motor winding of the electric motor 12 on the one hand and to the control unit 13 on the other hand.
- Figure 5 shows a method for producing the actuating device 1 using a flow chart.
- a first step S1 the housing 3 is manufactured.
- the housing 3 together with the rotary counterstops 37, 38 are manufactured by extrusion.
- the housing 3 is therefore obtained as an extrusion profile 3, as mentioned previously.
- the rotation counterstops 37, 38 are formed by extrusion structures 35 of the extrusion profile 3, in the present case by the grooves 35.
- the extrusion profile 3 is post-processed. For example, the structures 45, 46, 47, 48, 53, 54 are milled into the extrusion profile 3.
- the transmission device 16 with the displaceable threaded spindle 17 is provided.
- the anti-rotation element 24 is connected to the threaded spindle 17 in a rotationally fixed manner.
- the anti-rotation element 24 is manufactured in one piece with the threaded spindle 17.
- the threaded spindle 17 is then installed together with the anti-rotation element 24 into the transmission device 16.
- the gear device 16 is arranged such that the threaded spindle 17 is at least partially arranged in the housing 3 and the rotation stops 40, 41 of the rotation locking element 24 cooperate with the rotation counterstops 37, 38 of the extrusion profile 3 to form the rotation lock 23.
- the electric motor 12 is operatively connected to the transmission device 16 in such a way that the transmission device 16 can be driven by the electric motor 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
- Braking Systems And Boosters (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022205437.7A DE102022205437A1 (de) | 2022-05-30 | 2022-05-30 | Betätigungseinrichtung für ein Bremssystem, Verfahren zum Herstellen einer Betätigungseinrichtung für ein Bremssystem |
| PCT/EP2023/064052 WO2023232634A1 (de) | 2022-05-30 | 2023-05-25 | Betätigungseinrichtung für ein bremssystem, verfahren zum herstellen einer betätigungseinrichtung für ein bremssystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4532278A1 true EP4532278A1 (de) | 2025-04-09 |
Family
ID=86646735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23727874.2A Pending EP4532278A1 (de) | 2022-05-30 | 2023-05-25 | Betätigungseinrichtung für ein bremssystem, verfahren zum herstellen einer betätigungseinrichtung für ein bremssystem |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4532278A1 (de) |
| JP (1) | JP2025517502A (de) |
| KR (1) | KR20250012130A (de) |
| CN (1) | CN119301024A (de) |
| DE (1) | DE102022205437A1 (de) |
| WO (1) | WO2023232634A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60139927A (ja) * | 1983-12-27 | 1985-07-24 | Jidosha Kiki Co Ltd | ブレ−キ装置 |
| JPH10184844A (ja) * | 1996-12-25 | 1998-07-14 | Smc Corp | 電動アクチュエータ |
| JP6238647B2 (ja) * | 2013-08-30 | 2017-11-29 | 日立オートモティブシステムズ株式会社 | 電動倍力装置 |
| DE102014111594A1 (de) * | 2014-08-13 | 2016-02-18 | Ipgate Ag | Betätigungssystem, insbesondere für eine Fahrzeugbremse und Verfahren zum Betrieb des Betätigungssystems |
| JP6570114B2 (ja) * | 2015-07-13 | 2019-09-04 | 株式会社アイエイアイ | アクチュエータ |
| DE102016105232A1 (de) * | 2016-03-21 | 2017-09-21 | Ipgate Ag | Betätigungsvorrichtung für ein hydraulisches Betätigungssystem, insbesondere eine Kraftfahrzeugbremse oder einen elektrifizierten Kupplungs- und Gangsteller |
| DE202019101586U1 (de) * | 2019-02-12 | 2020-05-13 | Ipgate Ag | Packaging für ein Bremssystem |
| KR102670366B1 (ko) * | 2019-04-18 | 2024-05-30 | 현대모비스 주식회사 | 차량용 전동부스터 |
| DE102020208764A1 (de) | 2020-07-14 | 2022-01-20 | Robert Bosch Gesellschaft mit beschränkter Haftung | Elektromechanischer Bremskraftverstärker |
| JP7527933B2 (ja) * | 2020-10-29 | 2024-08-05 | 日立Astemo上田株式会社 | 液圧発生装置 |
-
2022
- 2022-05-30 DE DE102022205437.7A patent/DE102022205437A1/de active Pending
-
2023
- 2023-05-25 JP JP2024569439A patent/JP2025517502A/ja active Pending
- 2023-05-25 WO PCT/EP2023/064052 patent/WO2023232634A1/de not_active Ceased
- 2023-05-25 KR KR1020247042255A patent/KR20250012130A/ko active Pending
- 2023-05-25 EP EP23727874.2A patent/EP4532278A1/de active Pending
- 2023-05-25 CN CN202380044174.5A patent/CN119301024A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023232634A1 (de) | 2023-12-07 |
| CN119301024A (zh) | 2025-01-10 |
| KR20250012130A (ko) | 2025-01-23 |
| JP2025517502A (ja) | 2025-06-05 |
| DE102022205437A1 (de) | 2023-11-30 |
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