WO2020200919A1 - Dispositif d'actionnement pour un système de freinage - Google Patents

Dispositif d'actionnement pour un système de freinage Download PDF

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Publication number
WO2020200919A1
WO2020200919A1 PCT/EP2020/058171 EP2020058171W WO2020200919A1 WO 2020200919 A1 WO2020200919 A1 WO 2020200919A1 EP 2020058171 W EP2020058171 W EP 2020058171W WO 2020200919 A1 WO2020200919 A1 WO 2020200919A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing part
input rod
actuating device
housing
designed
Prior art date
Application number
PCT/EP2020/058171
Other languages
German (de)
English (en)
Inventor
Willi Nagel
Oscar YELAMOS TORRES
Michael OSSES
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to CN202080026739.3A priority Critical patent/CN113631439B/zh
Priority to JP2021556691A priority patent/JP7235428B2/ja
Publication of WO2020200919A1 publication Critical patent/WO2020200919A1/fr

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
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/18—Connection thereof to initiating means
    • 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
    • B60T13/567—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of the casing or by its strengthening or mounting arrangements
    • 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
    • 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
    • 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

Definitions

  • the invention relates to an actuating device for a brake system, with an input rod which is axially displaceable and which for this purpose has a
  • a displacement sensor which has a transducer and a receiver and which is designed to determine a sliding position of the input rod
  • a braking force generator which is designed to apply a master brake cylinder to the brake system as a function of the determined sliding position press
  • a hydraulic brake system of a motor vehicle generally has at least one wheel brake device assigned to a wheel.
  • the brake system has a master cylinder, which with a
  • Wheel brake cylinder of the wheel brake device is fluidly connected, so that by axial displacement of a hydraulic piston mounted in the master brake cylinder in an actuation direction, a brake fluid is displaced from the master brake cylinder into the wheel brake cylinder and, as a result, a deceleration torque is generated by the wheel brake device.
  • An actuating device is provided for actuating the master brake cylinder, that is to say for displacing the hydraulic piston in the actuating direction.
  • An actuating device of the type mentioned at the outset is known, for example, from laid-open specification DE 10 2014 220 358 A1.
  • Actuating device comprises an input rod which is axially displaceable and which for this purpose has a first end which can be coupled to a brake pedal.
  • the actuating device has a displacement sensor which has a measuring transducer and a receiver and which is designed to determine a sliding position of the input rod. Furthermore is a
  • Brake force generator is provided, which is designed to actuate the master brake cylinder of the brake system as a function of the determined shift position.
  • the actuating device has a housing, in the case of the previously known actuating device, for example, a motor of the braking force generator being arranged in the housing.
  • Claim 1 has the advantage that the sliding position of the input rod can be reliably determined and that the displacement sensor is arranged to save space.
  • the housing is designed in several parts, with a first housing part assigned to the braking force generator and a second housing part coupled to the input rod, one of the housing parts being mounted axially displaceably on or in the other of the housing parts, and with the first housing part the receiver and the second housing part has the transducer.
  • the first housing part is arranged in a fixed manner relative to the braking force generator, in particular relative to an electric motor of the braking force generator.
  • the displacement sensor is designed to determine at least one absolute displacement of the input rod as the sliding position of the input rod, that is to say a path difference between the actual position of the input rod and a basic position of the input rod.
  • the basic position is to be understood as a position of the input rod, starting from which the input rod can only be axially displaced in the direction of the master brake cylinder, that is, in the actuation direction, but not in the opposite direction.
  • the input rod is in the basic position when the input rod is not being actuated by the brake pedal.
  • the knowledge of the absolute displacement enables a particularly advantageous control of the braking force generator of a braking system designed as a power brake.
  • the actuating device is preferably designed in such a way that the input rod and the hydraulic piston are mechanically decoupled so that when the input rod is shifted in the actuating direction, at least in normal operation
  • Brake force generator can be operated without errors, there is at least no rigid mechanical coupling between the input rod and the hydraulic piston.
  • the transducer preferably has at least one magnet.
  • the receiver has at least one magnetic field sensitive element.
  • the first and / or the second housing part are designed to be pressure-resistant. Both of the housing parts are preferably designed to be pressure-resistant. This ensures that the housing parts do not deform when the input rod is displaced in the direction of the master brake cylinder, so that a constant radial distance between the
  • the first and / or the second housing part preferably have a hollow cylindrical section.
  • the housing parts are advantageously suitable for receiving components of the actuating device.
  • the actuating device preferably has an anti-twist device which acts between the first housing part and the second housing part.
  • the anti-rotation device prevents the two housing parts from rotating relative to one another about an axis of rotation extending in the actuating direction. This ensures that the transducer and the receiver are arranged radially opposite one another.
  • one of the housing parts has at least one groove which extends in the actuating direction and which is open to the other of the housing parts, and that the other of the housing parts has at least one web which is used to form the anti-rotation device the groove engages.
  • One of the housing parts preferably has at least three grooves.
  • the Grooves are the same distance from one another as seen in the circumferential direction.
  • the other of the housing parts has a number of webs corresponding to the number of grooves, each of the webs engaging in one of the grooves to form the anti-twist device.
  • the actuating device preferably has a sealing element which is arranged on the first housing part and which is on an outside of a
  • Shell wall of the second housing part rests. This prevents particles from entering an interior of the housing. As a result, components stored in the housing are protected from wear by the particles.
  • the sealing element is annular and extends along the entire circumference of an outer side of a jacket wall of the first housing part.
  • an end wall of the second housing part facing away from the master brake cylinder has an opening, the input rod reaching through the opening, and a cross section of the opening being larger than a cross section of the input rod, so that the input rod has radial play at least in the area of the opening.
  • End wall facing away from the master brake cylinder is to be understood as a front end wall of the second housing part, viewed in the actuating direction.
  • the provision of the radial play for the input rod is advantageous because
  • Brake pedals which can be coupled to the input rod, are generally arranged to be pivotable. Accordingly, the input rod coupled to a brake pedal is acted upon both axially and radially with a force when the brake pedal is actuated by a user of the actuating device.
  • the input rod preferably has at least one guide disk which rests axially on a rear side or on a front side of the end wall.
  • the rear side of the front wall is understood to mean a side of the front wall facing away from the master brake cylinder.
  • the front side is the side of the front wall facing the master brake cylinder.
  • the guide washer ensures that an axial force through the
  • the input rod can be transferred to the second housing part. Consequently the guide disk coupled to the input rod ensures that the second housing part is coupled to the input rod.
  • Two guide disks are preferably provided, a first of the guide disks resting axially on the rear side of the end wall and a second of the guide disks resting axially on the front side of the end wall.
  • a second end of the input rod facing the master brake cylinder is spherical and engages in a first end, facing away from the master cylinder, of an input piston coupled to the input rod to form a ball joint.
  • Ball joint ensures that, on the one hand, axial forces on the input piston can be transmitted through the input rod, and that, on the other hand, the radial play of the input rod is guaranteed.
  • the radial play is designed such that the input rod can be tilted radially by about 5 °.
  • the end wall of the second housing part is preferably designed as a dome of a ball, with a center point of the ball and a pivot point of the
  • the end wall of the second housing part has a thickening in the region of the opening, so that the guide disk rests axially against the thickening. This further reduces the friction when the input rod is tilted radially.
  • the thickening preferably extends along the entire circumference of the opening.
  • a plug device is preferably on the first housing part
  • the plug device is preferably arranged in a stationary manner relative to the receiver.
  • the plug device provides, in particular, electrical contacting of the receiver with further devices, for example with a control unit.
  • the fixed arranged first housing part has the receiver, and that the
  • Connector device is arranged on the first housing part, can on a deformable cable for the particular electrical contacting of the
  • Receiver can be omitted with the device. This saves installation space.
  • a cable and / or a stamped grid preferably runs through the first for electrical contacting of the connector device with the receiver
  • the cable or the lead frame is accordingly arranged within a jacket wall of the first housing part.
  • the first housing part is preferably designed as a plastic part.
  • the cable and / or the lead frame are preferably injected into the first housing part designed as a plastic part.
  • the actuating device preferably has a pedal travel simulator which is pretensioned between the input rod on the one hand and a part arranged on the first housing part on the other hand.
  • the arranged part is arranged either directly, that is to say directly, or indirectly, that is to say indirectly or with the interposition of at least one further element, on the first housing part.
  • the arranged part is the first housing part itself, a further housing part or the master brake cylinder.
  • the input rod and the hydraulic piston can be mechanically decoupled.
  • the provision of the pedal travel simulator has the advantage that when the input rod is displaced in the direction of the master brake cylinder, a counterforce that is perceptible by the user of the actuation direction, i.e. an axial force acting against the actuation direction, is provided. The user therefore receives haptic feedback regarding his actuation of the
  • the pretensioning of the pedal travel simulator has the advantage that parts of the pedal travel simulator are held together in a compact manner.
  • the actuating device preferably has a spring device which, for preloading the pedal travel simulator, is located on the one hand on the part arranged on the first housing part and on the other hand on the pedal travel simulator supports.
  • the bias of the pedal travel simulator is thus at least partially provided by the spring device.
  • Pedal travel simulator takes place either directly, ie directly, or indirectly, ie with the interposition of at least one further element.
  • the spring device preferably has a return spring for the spindle.
  • the arranged part is then, for example, the first
  • Housing part itself, another housing part or around the
  • the return spring for the spindle is supported, for example, on one with the spindle
  • the actuation direction with the spindle can also be displaced and the spindle can also be displaced with the pressure disc at least counter to the actuation direction.
  • the return spring for the spindle is thus supported on the pedal travel simulator at least by means of the pressure plate, the spindle and the spindle nut.
  • a bearing which transmits an axial force is arranged between the spindle nut and the pedal travel simulator, so that the spring device is then also supported on the pedal travel simulator by means of the bearing.
  • the spring device has a return spring for the hydraulic piston. This is supported on the one hand within the master cylinder on one of the
  • Hydraulic piston the push rod, the spindle, the spindle nut and the bearing on the pedal travel simulator.
  • Figure 1 shows a longitudinal section through an actuating device of a
  • FIG. 2 shows a detailed view of housing parts of the actuating device.
  • Figure 1 shows a longitudinal section through an actuator 1 of a brake system.
  • the actuating device 1 is designed to have a
  • Master brake cylinder 2 to move mounted hydraulic piston 3 in an actuation direction 4.
  • the master cylinder 2 is fluidly with
  • Wheel brake cylinders connected by wheel brake devices, not shown. By moving the hydraulic piston 3 in the actuation direction 4, a hydraulic fluid is thereby drawn from the master brake cylinder 2 into the
  • Wheel brake device generates a deceleration torque.
  • the actuating device 1 has a braking force generator 5.
  • the braking force generator 5 has a spindle gear 6.
  • the spindle gear 6 comprises a spindle nut 7 which can be driven by an electric motor of the braking force generator 5 and which extends around a spindle nut in the actuation direction 4
  • Axis of rotation 8 is rotatably mounted.
  • the spindle gear 6 comprises a non-rotatable and axially displaceable spindle 9, wherein a
  • a push rod 10 the end face of which rests axially on the hydraulic piston 3 at least when the master brake cylinder 2 is actuated, is displaced along with the spindle 9.
  • the actuating device 1 has an input rod 11 which can be displaced in the actuating direction 4 by a brake pedal (not shown) and axially displaceable relative to the spindle 9.
  • a first end 12 of the input rod 11 can be or is coupled to the brake pedal.
  • a user of the actuation device 1 actuates the brake pedal, whereby an axial force or actuation force acting in the actuation direction 4 is transmitted to the input rod 11.
  • the actuating device 1 also has a housing 13 in which the braking force generator 5 and a pedal travel simulator 14 are arranged in the present case are.
  • the housing 13 has a first housing part 15 which is arranged so as to be stationary relative to the braking force generator 5.
  • the housing 13 has a second housing part 16 which is coupled to the input rod 11, so that the second housing part 16 can also be displaced when the input rod 11 is axially displaced.
  • the second housing part 16 is mounted axially displaceably in the first housing part 15.
  • the first housing part 15 has a larger cross section than the second housing part 16.
  • the first housing part 15 is mounted in the second housing part 16 so that it can be axially displaced, so that the second housing part 16 then has the larger cross section.
  • the first housing part 15 and the second housing part 16 are cylindrical and have a
  • the housing parts 15 and 16 each have an axial recess 17 or 18, the axial recess 17 of the first housing part 15 being designed as an axial opening.
  • a side of the first housing part 15 facing away from the master brake cylinder 2 has a cross-sectional taper 19.
  • a side of the second housing part 16 facing the master brake cylinder 2 has a radial projection 20 which engages behind the cross-sectional taper 19. Due to the radial projection 20 and the cross-sectional taper 19, a maximum permissible
  • Displacement of the input rod 11 against the direction of actuation 4 is specified.
  • the input rod 11 cannot be displaced or cannot be displaced further counter to the actuating direction 4 when the radial projection 20 is in axial contact with the cross-sectional taper 19.
  • the second housing part 16 has one of the brake master cylinder 2
  • the end wall 22 has an axial opening 23 through which the input rod 11 extends.
  • a cross section of the axial opening 23 is larger than a cross section of the input rod 11, so that the input rod 11 has radial play.
  • the cross sections of the axial opening 23 and of the input rod 11 are preferably designed such that the radial play is approximately 5 °.
  • a second end 24 of the input rod 11 facing away from the brake pedal is spherical
  • Ball seat 26 formed facing away from the master cylinder 2 first end 27 of an input piston 28 coupled to the input rod 11.
  • the end wall 22 of the second housing part 16 is designed as a dome 31 of a ball, with a center point 32 of the ball and a pivot point 33 of the ball joint 28 spatially superimposed.
  • the input rod 11 has a first one
  • Guide disk 34 rests axially against a rear side 36, that is to say a side of end wall 22 facing away from master brake cylinder 2.
  • the second guide disk 35 is axially on a front side 37, so one of the
  • Guide disks 34 and 35 are shaped to match the end wall 22, so that low-friction radial tilting of the input rod 11 is ensured. In order to further reduce the friction during radial tilting, the
  • End wall 22 has a thickening 38 in the region of the axial opening 23, the guide disks 34 and 35 only resting axially on the thickening 38.
  • the input piston 28 rests axially on an end of the pedal travel simulator 14 facing away from the master brake cylinder 2, so that the
  • Pedal travel simulator 14 can be actuated by the input piston 28 or by the input rod 11 coupled to the input piston 28. Because the input rod 11 and the input piston 28 are coupled to one another, the end facing away from the master brake cylinder 2 is located
  • Pedal travel simulator 14 indirectly to the second end 24 of the input rod 11. At the other end, the pedal travel simulator 14 rests axially against a side of the spindle nut 7 facing away from the master brake cylinder 2 by means of a bearing 80 that transmits an axial force.
  • the pedal travel simulator has a first spring device 30, a second spring device 68 and a third spring device 69.
  • the first spring device has a helical spring 67.
  • the second spring device 68 has an elastomer spring 70.
  • the third spring device 69 has two disc springs 71, 72.
  • the pedal travel simulator 14 is located by means of Coil spring 67 on the input piston 28 and thus on the
  • Pedal travel simulator 14 are connected in series.
  • the actuating device 1 also has a sleeve-shaped first element 73.
  • the first element 73 has an axial recess 74 in which the first spring device 30 or the helical spring 67 is arranged.
  • a master cylinder 2 facing end of the first
  • Spring device 30 or helical spring 67 rests axially within axial recess 74 on a side of first element 73 facing away from master brake cylinder 2.
  • the first element 73 can be displaced relative to the spindle 9 and is mounted in an axial recess 75 of the spindle 9.
  • the actuating device 1 also has a sleeve-shaped second element 76 which has an axial opening 77 through which the input rod 11 extends coaxially.
  • the second element 76 and the first element 73 are at least partially concentric to one another
  • the second element 76 has a larger cross section than the first element 73. Accordingly, the first element 73 is guided radially in the second element 76.
  • the second element 76 has a
  • Cross-sectional tapering 78 which engages behind a radial projection 79 of the first element 73.
  • the cross-sectional tapering 78 is located in the area of a rear end of the second element 76, seen in the actuating direction.
  • the radial projection 79 is located on one of FIG.
  • the second element 76 has a radial projection 79 located in front of the cross-sectional taper 78 in the actuation direction 4, the third spring device 69 being supported on a side of the radial projection 79 facing the master brake cylinder 2.
  • the first spring device 30 and the third spring device 69 are thus connected in series by means of the first element 73 and the second element 76.
  • the radial projection 79 is located at a front end of the second element 76 as seen in the actuation direction 4.
  • the pedal travel simulator 14 is designed such that it is between the
  • Input rod 11 on the one hand and a part arranged at least indirectly on the first housing part 15 on the other hand is held pretensioned.
  • the pedal travel simulator 14 at least when the cross-sectional taper 19 of the first housing part 15 rests axially on the radial projection 20 of the second housing part 16 of the pedal travel simulator 14, on the one hand an axial force acting against the actuation direction 4 on the input rod 11 and, on the other hand, an axial force in the actuation direction 4 on the provides axial force acting at least indirectly on the first housing part 15 arranged part.
  • the actuating device 1 has to preload the
  • Pedal travel simulator 14 has a fourth spring device 81.
  • the fourth spring device 81 The fourth
  • Spring device 81 is supported on the one hand on a pressure plate 82 which rests axially on the spindle 9, the pressure plate 82 at least in the
  • the actuating direction 4 can also be displaced with the spindle 9 and the spindle 9 can also be displaced at least counter to the actuating direction 4 with the pressure plate 82.
  • the fourth spring device 81 is thus designed as a return spring 81 for the spindle 9.
  • the fourth spring device 81 is supported on the housing part, not shown, which is arranged at least indirectly on the first housing 15. Ultimately, an axial force is transmitted from the input rod 11 to the housing part (not shown) by means of the input piston 28, the pedal travel simulator 14, the bearing 80, the spindle nut 7, the spindle 9 and the fourth spring device 81.
  • the first housing part 15 has an annular groove 41 running in the circumferential direction on an outer side 39 of its jacket wall 40.
  • An annular sealing element 42 engages in the annular groove 41.
  • the sealing element 42 extends in the direction of the second housing part 16 and rests radially on an outer side 43 of a jacket wall 44 of the second housing part.
  • the sealing element 42 prevents particles from penetrating into the axial recesses 17 and 18, that is to say into an interior of the housing 13.
  • the actuation device 1 also has a displacement sensor 45.
  • the displacement sensor is designed to provide an absolute displacement of the input rod 11 to be determined.
  • the displacement sensor 45 has a measuring transducer 46 which is arranged on the second housing part 16.
  • the displacement sensor 45 has a receiver 47, which is arranged radially opposite the transducer 46 on the first housing part 15.
  • the displacement sensor 45 has a measuring transducer 46 which is arranged on the second housing part 16.
  • the displacement sensor 45 has a receiver 47, which is arranged radially opposite the transducer 46 on the first housing part 15.
  • Measurement transducer 46 has at least one magnet 48.
  • the receiver 47 has at least one magnetic field-sensitive element 49.
  • the braking force generator 5 is designed to control the spindle 9 as a function of the determined
  • the first housing part 15 has a plug device 50.
  • the plug device 50 and the receiver 47 are through a punched grid 51 through the first
  • Housing part 15 runs, connected to each other. Here is the first
  • Housing part 15 designed as a plastic part.
  • the lead frame 51 is injected into the first housing part 15, which is designed as a plastic part.
  • the second housing part 16 is preferably also designed as a plastic part.
  • the actuating device 1 also has a gear housing 55 which is arranged so as to be stationary relative to the braking force generator 5.
  • An end wall 56 of the gear housing 55 has an axial opening 57 through which the first housing part 15 extends.
  • the diameter of the axial opening 57 is selected such that the outer side 39 of the jacket wall 40 of the first housing part 15 radially on an inner side 58 delimiting the axial opening 57
  • the first housing part 15 has a radial projection 59 which engages behind the end wall 56, so that a side of the radial projection 59 facing away from the master brake cylinder 2 rests axially on a side of the end wall 56 facing the main brake cylinder 2. Due to the axial abutment, a maximum permissible displacement of the first housing part 15 against the
  • the plug device 50 is formed in the area of the radial projection 59 on the first housing part 15.
  • the plug device 50 is thus located on a side of the end wall 56 of the gear housing 55 facing the master brake cylinder 2. This makes a structurally simple and space-saving electrical or Communication-related connection of the connector device 50 to further devices, for example to a control device for controlling the electric motor of the brake booster 5, is possible.
  • the actuating device 1 also has a roller bearing 60.
  • Rolling bearing 60 has two concentric bearing rings 61 and 62, bearing ring 61 having a larger diameter than bearing ring 62.
  • the bearing ring 61 is an outer bearing ring 61 and the bearing ring 62 is an inner bearing ring 62.
  • the outer bearing ring 61 rests radially on an inner side 63 of the jacket wall 40 of the first housing part 15.
  • the outer bearing ring 61 has an annular groove 64 running in the circumferential direction into which a locking ring, in particular a clip ring 65, engages.
  • the clip ring 65 has a diameter which is larger than the diameter of the outer bearing ring 61 and smaller than that
  • the actuating device 1 has a support ring 66, in particular a sheet metal support ring 66, the diameter of which is greater than the diameter of the axial opening 57.
  • the support ring 66 is arranged between the first housing part 15 and the clip ring 65, one of the master brake cylinder 2
  • the side of the support ring 66 facing away from the brake master cylinder 2 rests on a side of the radial projection 59 or the first housing part 15 facing the brake master cylinder 2, and a side of the support ring 66 facing the brake master cylinder 2 rests on a side of the clip ring 65 facing away from the brake master cylinder 2.
  • the diameter of the support ring 66 is greater than the diameter of the axial opening 57 ensures that when the first housing part 15 is subjected to an axial force, the axial force flows as a pure compressive force through the radial projection 59, so that the radial projection 59 does not have any shear force or none
  • Radial projection 59 is subjected to bending force.
  • the support ring 66 is preferably dispensed with.
  • the clip ring 65 and the annular groove 64 are then arranged in such a way that the brake master cylinder 2 facing away side of the clip ring 65 axially directly on the side of the first housing part 15 or the main brake cylinder 2 facing
  • Radial projection 59 rests.
  • the clip ring 65 is then dimensioned such that the diameter of the clip ring 65 is larger than the diameter of the axial opening 57.
  • both the support ring 66 and the clip ring 65 are dispensed with.
  • the outer bearing ring 61 is then designed in such a way that it has a radial projection whose diameter is greater than the diameter of the axial opening 57 and its side facing away from the brake master cylinder 2 axially directly at that
  • FIG. 2 shows a perspective view of the second housing part 16 and a longitudinal section of the first housing part 15.
  • the actuating device 1 has an anti-rotation device 52 which acts between the first housing part 15 and the second housing part 16.
  • the anti-rotation device 52 comprises, on the one hand, three grooves 53, which are in the radial projection 20 of the second
  • Housing part 16 is formed, and which extend in the actuation direction 4.
  • the anti-rotation device 52 comprises three webs 54 which are formed on the first housing part 15.
  • Actuating device 1 engages in one of the grooves 53 of each of the webs 54 to form the anti-twist device 52.
  • the rotation lock 52 prevents the first housing part 15 and the second housing part 16 from rotating relative to one another about the axis of rotation 8. Accordingly, the anti-rotation device 52 ensures that the transducer 46 and the receiver 47 are arranged radially opposite one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

L'invention concerne un dispositif d'actionnement pour un système de freinage, comportant une tige d'entrée (11), qui peut se déplacer dans le sens axial et présente à cet effet une première extrémité (12) pouvant être accouplée à une pédale de frein, un capteur de déplacement (45), qui présente un capteur de mesure (46) et un récepteur (47), et est conçu de manière à déterminer une position de déplacement de la tige d'entrée (11), un générateur de force de freinage (5) qui est conçu de sorte à actionner un maître-cylindre (2) du système de freinage, en fonction de la position de déplacement déterminée, ainsi qu'un boîtier (13) dans lequel est agencée au moins une partie du dispositif d'actionnement (1). Selon l'invention, le boîtier (13) se compose de plusieurs parties, une première partie de boîtier (15) étant associée au générateur de force de freinage (5) et une seconde partie de boîtier (16) étant accouplée à la tige d'entrée (11), une des parties de boîtier (16) étant montée de manière à coulisser dans le sens axial sur ou dans l'autre partie de boîtier (15), la première partie de boîtier (15) comportant le récepteur (47) et la seconde partie de boîtier (16) comportant le capteur de mesure (46).
PCT/EP2020/058171 2019-04-01 2020-03-24 Dispositif d'actionnement pour un système de freinage WO2020200919A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202080026739.3A CN113631439B (zh) 2019-04-01 2020-03-24 用于制动装备的操纵装置
JP2021556691A JP7235428B2 (ja) 2019-04-01 2020-03-24 ブレーキシステムのための操作装置

Applications Claiming Priority (2)

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DE102019204561.8A DE102019204561A1 (de) 2019-04-01 2019-04-01 Betätigungseinrichtung für eine Bremsanlage
DE102019204561.8 2019-04-01

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WO2020200919A1 true WO2020200919A1 (fr) 2020-10-08

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CN (1) CN113631439B (fr)
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DE102022205435A1 (de) * 2022-05-30 2023-11-30 Robert Bosch Gesellschaft mit beschränkter Haftung Betätigungseinrichtung für ein Bremssystem

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JP5445837B2 (ja) * 2009-01-13 2014-03-19 株式会社アドヴィックス ブレーキ装置
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DE102011101655A1 (de) * 2011-05-16 2012-11-22 Ipgate Ag Betätigungsvorrichtung, insbesondere für eine Fahrzeug-Bremsanlage
DE102012002117A1 (de) * 2012-02-06 2013-08-08 Ipgate Ag Bremsvorrichtung für Kraftfahrzeuge
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WO2017194674A1 (fr) * 2016-05-13 2017-11-16 Continental Teves Ag & Co. Ohg Dispositif de freinage pour système de freinage hydraulique de véhicule automobile avec vis à billes

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CN113631439B (zh) 2024-05-28
JP2022526502A (ja) 2022-05-25
JP7235428B2 (ja) 2023-03-08
DE102019204561A1 (de) 2020-10-01
CN113631439A (zh) 2021-11-09

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