CN113557185A - Electric brake actuator for a motor vehicle - Google Patents
Electric brake actuator for a motor vehicle Download PDFInfo
- Publication number
- CN113557185A CN113557185A CN202080020286.3A CN202080020286A CN113557185A CN 113557185 A CN113557185 A CN 113557185A CN 202080020286 A CN202080020286 A CN 202080020286A CN 113557185 A CN113557185 A CN 113557185A
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- housing
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- motor
- damping element
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- 238000013016 damping Methods 0.000 claims abstract description 131
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 230000013011 mating Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims 10
- 230000009977 dual effect Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
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- 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
- F16D65/0006—Noise or vibration control
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
- F16F1/3732—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape having an annular or the like shape, e.g. grommet-type resilient mountings
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention relates to an electric brake actuator (1) for a motor vehicle, comprising an actuator housing (2) in which an electric motor (4) having a motor shaft (19) and a pinion (20) fixed relative to the shaft, and a carrier unit (6) and a multi-stage transmission (7) are accommodated, wherein the actuator housing (2) has a pot-shaped housing section (2a) accommodating the electric motor (4) and having a housing base (36) and a housing inner wall (28) extending in an axial direction (A) of the motor shaft (19), wherein a resilient damping element (29) is arranged in the housing section (2a) of the actuator housing (2) and has a first damping section (31) and at least one second damping section (30) extending in the axial direction (A), wherein the first damping section (31) is arranged between the motor housing (5) and the housing base (36) and the second damping section (31) is arranged The damping section (30) is arranged between the motor housing (5) and the housing inner wall (28).
Description
Technical Field
The invention relates to an electric (electric motor) brake actuator for a motor vehicle, having an actuator housing in which an electric motor and a carrier unit as well as a multi-stage transmission are accommodated, according to the preamble of claim 1.
Background
Electric brake actuators are often installed in motor vehicles. An electric parking brake can be parked and released, for example, by means of such a brake actuator. Depending on the use of the brake actuator, such a brake actuator can be actuated manually by a user by means of a switch, or can be automatically actuated or set via a control. Thus, a user may be facilitated to take off, in particular at a slope, for example by automatically releasing the parking brake.
Furthermore, on the basis of the electrical control, a manual brake lever and a cable pull connected thereto are no longer required, as a result of which costs and installation space can be saved. However, the application of such a brake actuator is not limited to a parking brake. For example, it is also conceivable to use these brake actuators for traction control and Electronic Stability Programs (ESP) and in the service brakes of motor vehicles.
Electric brake actuators often have: a particularly high-speed, low-voltage direct-current motor with a brush system of slip-on commutators, hereinafter also referred to as electric motor or brush-commutated electric motor; and a transmission mechanism driven by the low voltage dc motor. In order to achieve a torque transmission ratio which is as large as possible, a plurality of gear stages are conventionally provided in the gear mechanism. On the one hand, this reduces the noise development caused by high rotational speeds, and on the other hand, provides the higher torques required by the brakes of the motor vehicle.
DE 202017104469 DE discloses a generic electric brake actuator, in particular for a motor vehicle, having an actuator housing, which has a first housing half shell and a second housing half shell in the form of a cover, in which an electric motor and a carrier unit as well as a multi-stage transmission are arranged. The carrier unit has a first bearing seat for receiving a bearing shaft of a gearwheel of the first gear stage and a second bearing seat for receiving a second bearing shaft of a gearwheel of the second gear stage, which is coupled to a third gear stage having a driven wheel. A second bearing seat for the first and second bearing shafts is arranged in the second housing half-shell in the form of a cap.
The electric motor has a motor shaft with a first pinion fixed relative to the shaft, which meshes with a gearwheel (dual gearwheel) of the first gear stage, which meshes with a gearwheel (dual gearwheel) of the second gear stage. One or two intermediate transmission stages can be arranged between the first and the last transmission stage, wherein the respective pinion drives a comparatively large gear, as a result of which a comparatively high transmission ratio for the operating brake can be achieved.
An electric motor brake actuator having a multi-stage transmission which is damped within a housing which is closed with a housing cover by means of annular damping elements for absorbing vibrations in and at the housing cover is known from KR 101592825B 2.
A transmission motor drive for use in parking brakes is known from DE 102016221162 a1, which has a carrier extending perpendicular to the longitudinal axis of the motor, in which a pinion provided on the end face of the motor shaft is accommodated, and in which a shaft of a dual gear meshing with the pinion and of a further dual gear meshing with the dual gear is supported. Between the carrier and the housing cover, a bearing race with a cage-like damping element is arranged, which can be molded onto the housing cover or onto the bearing race.
In the electric motor-type servo drive known from DE 102004048700 a1 for actuating a parking brake of a motor vehicle, the motor and the carrier element for the multi-stage transmission are connected only via elastic elements to the drive housing in which the motor and the transmission are accommodated. On the motor side, the respective elastic element is arranged in the pot-shaped drive housing and is arranged there only between the housing base and the housing base of the motor.
Disclosure of Invention
The object of the present invention is to provide a particularly low-noise electric brake actuator having an actuator housing in which an electric motor and a multi-stage transmission are accommodated. In particular, suitable damping should be provided within the pot-shaped housing section of the actuator housing, in particular in conjunction with the orientation or positioning of the electric motor.
According to the invention, this object is achieved by the features of claim 1. Advantageous developments and embodiments are the subject matter of the dependent claims.
For this purpose, an electric (electric motor) brake actuator has an actuator housing in which an electric motor having a motor shaft and a pinion fixed to the shaft is accommodated, as well as a carrier unit and a multi-stage transmission.
The actuator housing has a pot-shaped housing section which accommodates the electric motor and its motor housing and which has a housing base and a housing wall (inner housing wall) which extends in the axial direction of the motor shaft of the electric motor. An elastic damping element is arranged in a housing section of the actuator housing, said damping element having a first damping section (on the housing bottom side) and at least one second damping section extending in the axial direction. The damping element preferably has two such axial second damping sections, in particular diametrically opposite one another.
The first damping section is arranged between a motor housing of the electric motor and a housing base of the housing section, while the second damping section is arranged between the motor housing and a preferably cylindrical housing inner wall (housing wall) of the housing section. The motor housing is suitably a so-called pole pot with flat sides (flattened portions) facing each other. The second damping section of the damping element preferably bears against these flattened portions.
The pinion fixed relative to the shaft meshes in a suitable manner with a (first) gear wheel of the first gear stage, which is coupled via at least one further gear stage with a (second) gear wheel to the last gear stage with a (third) gear wheel and driven wheels. The last gear stage can be a fourth gear stage, so that a third gear stage is then provided between the fourth gear stage and the second gear stage.
In an advantageous embodiment, the or each second damping section of the damping element is formed onto the first damping section of the damping element. The first damping section particularly preferably has an annular base section to which the or each second damping section is molded, in particular via a radial connection.
At the inner periphery of the annular base section of the first damping section, a stepped contour is expediently provided. It is also advantageous if the first damping section of the damping element has a ramp-like shaped portion which extends radially inward transversely to the axial direction and which, in the assembled state, rests against the motor housing of the electric motor. This creates a secure mounting of the motor housing on the bottom side in the first, in particular annular, damping section and enables a better orientation of the electric motor in the actuator housing.
In a further embodiment, it is provided that the first damping section of the damping element has a profile section which extends radially outward transversely to the axial direction and with which the damping element is supported at the housing base of the housing section. This makes it possible to achieve a particularly reliable positioning of the damping element within the cylindrical, pot-shaped housing section of the actuator housing.
The second damping section of the damping element expediently has at least one axial rib facing the motor housing of the electric motor. This achieves a better radial pretensioning between the motor housing and the actuator housing, i.e. the cylindrical, pot-shaped housing section of the actuator housing which accommodates the electric motor.
According to a particularly suitable development, the housing inner wall of the housing section has a ribbed, axially (in the longitudinal direction of the motor shaft) extending engagement contour, in which the respective second damping section of the damping element is inserted. The damping element is thus positioned precisely and repeatedly within the cylindrical, pot-shaped housing section of the actuator housing. In addition or alternatively, in particular for this purpose, an engagement contour is provided in the region of the housing base of the pot-shaped (cylindrical) housing section, which engages in a corresponding mating contour, in particular an engagement groove, of the first damping section of the damping element.
The advantage achieved with the invention is, in particular, that a particularly effective noise decoupling of the electric motor from the actuator housing is achieved by means of such a damping element. In particular, due to the axial second damping section, which is preferably arranged between the motor housing of the electric motor and the pot-shaped (cylindrical) housing section of the actuator housing when the radial pretensioning is established, the excitation of the actuator housing, which leads to undesirable noise, is reduced, and in particular the acoustic properties of an electric (electric motor) brake actuator provided for a motor vehicle are improved.
As a further function, the damping element also assumes a particularly safe orientation of the electric motor within the actuator housing. In addition, a particularly compact design is provided when, in an electric motor having a pot-shaped motor housing (pole pot) with opposing flattened portions, the second damping section is arranged or positioned in the region of these flattened portions. In addition, a compact design is also improved when the housing inner wall of the housing section has at these points a ribbed engagement contour into which the axial damping section of the damping element is partially received (in the radial direction).
Drawings
Embodiments of the invention are explained in more detail below with the aid of the figures. In the drawings:
fig. 1 shows an electrical (electric motor) brake actuator with an actuator housing in which an electric motor with brushes (commutator motor) and a multi-stage gear mechanism mounted on a carrier unit are arranged in a perspective view;
fig. 2 shows an electric (electric motor) brake actuator in a sectional view, with a pot-shaped housing section of the actuator housing accommodating the electric motor and the damping element being visible;
fig. 3 shows a perspective view of an actuator housing with a cross section along a pot-shaped housing section of the actuator housing, in which a damping element is inserted between an inner housing wall (inner wall) and a motor housing of the electric motor;
fig. 4a and 4b show a damping element in a perspective view in a top view or (bottom-side) rear view, which has a first annular damping section and two axial (second) damping sections;
fig. 5 shows the actuator housing in a sectional view, with the engagement contour for the damping element being visible in the housing inner wall of the pot-shaped housing section;
fig. 6 shows the actuator housing with the damping section of the damping element inserted into the inner wall-side engagement contour in the illustration according to fig. 5; and is
Fig. 7 shows the actuator housing in a plan view, from which the pot-shaped housing section and the damping element inserted therein can be seen.
Parts corresponding to each other are provided with the same reference numerals throughout the drawings.
Detailed Description
Fig. 1 and 2 show an electric brake actuator 1 for a motor vehicle, not shown. The brake actuator 1 has an actuator housing 2, which is or can be closed by a housing cover 3. The actuator housing 2 has a substantially pot-shaped housing section 2a which accommodates an electric motor 4 (fig. 2) having a motor housing 5 and a carrier unit 6 as well as a multi-stage gear mechanism 7 of the brake actuator 1.
A spacer bridge 8, which can be seen in fig. 2, is arranged between the carrier unit 6 and the housing cover 3. This bridge is located above the gear mechanism 7 and outside the region of the actuator housing 2 covered by the housing cover 3. The first bearing shaft 9 and the second bearing shaft 10 are guided into the spacer bridge 8. The spacer bridge 8 has receiving bushings in which the bearing blocks 11, 12 formed on the housing cover 3 for the first and second bearing shafts 9 and 10 are seated.
The first bearing shaft 9 carries a first gear (dual gear) 13 of a first gear stage, which is coupled to the electric motor 4. The second bearing machine shaft 10 carries a second gearwheel (double gearwheel) 14 of the second gear stage, which is coupled to the first gear stage and to the last gear stage, which in fig. 2 can be seen as a large gearwheel 15 embodied as a double gearwheel, which is connected to a smaller gearwheel in the form of a driven pinion 16, which is coaxial with the large gearwheel.
The carrier unit 6 has a first bearing block 17 for the first bearing shaft 9 of the double-pinion gearwheel 13 of the first gear stage and a second bearing block 18 for receiving the second bearing shaft 10 of the second gear stage, which is likewise designed as a double-pinion gearwheel 14. The electric motor 4 has a motor shaft 19 with a pinion 20 which is fixed to the shaft and is provided with helical toothing and meshes with a ring gear 13a of the gear wheel 13, which is designed as a double gear, and which has an internal toothing (helical toothing) and forms a first gear stage together with the ring gear. The gear 13 embodied as a double gear has a smaller gear in the form of a pinion 13b, which is coaxial with the larger ring gear 13a and is mounted with it on the first bearing shaft 9, which meshes with the gear (double gear) 14 and forms a second gear stage with it. The double gear 14, which is composed of the larger external gear 14a and the smaller gear in the form of the pinion 18b, is coupled via its pinion 14b to the further gears 21, 22 of at least one further (third) gear stage, which is itself coupled to the gear (double gear) 15 of the last (fourth) gear stage.
The electric motor 4 has a stator 23 formed by permanent magnets fixed relative to the housing and a rotor 24 fixed relative to the shaft and surrounded by the stator, the coil windings of which are connected in a manner and method not shown in detail to a commutator 25 likewise fixed relative to the shaft. The commutator is energized via a brush system, not shown, which is energized with a coupling contact 26 in a coupling bush 27 formed on the actuator housing 2.
Fig. 3 shows the actuator housing 2 in a perspective sectional view in the region of a pot-shaped housing section 2a with a cylindrical housing inner wall (housing inner wall) 28. Within this housing section 2a, the motor housing 5 of the electric motor 4 and the stator 23 of the electric motor can be seen. A resilient (rubber-elastic) damping element 29 is arranged between the motor housing 5 and the housing inner wall 28 of the housing section 2 a.
The motor housing 5 is embodied as a so-called pole pot, which has flat sides or flattened sections lying opposite one another. The (second) damping section 30 of the damping element 29 rests in this region. These second damping sections 30 extend in an axial direction a coaxial with the motor shaft 19. The second damping section 30 is therefore located at the periphery of the pole-pot-shaped motor housing 5, wherein the damping sections 30 of the elastic damping element 29 generate a (mechanical) (radial direction R) pretension (radial pretension) in the radial direction R between the motor housing 5 and the actuator housing 2 or the pot-shaped housing section 2a of the actuator housing.
As is more clearly shown in fig. 4a and 4b, the elastic damping element 29 comprises a first damping section 31, to which a second, strut-like damping section 30 extending in the axial direction a is molded. The first damping section 31 of the damping element 29 has an annular base section 31a, i.e. the first damping section 31 of the damping element 29 is annular. The second damping sections 30 of the damping element 29 are each molded to this base section via a radial connection 32. An annular stepped contour 33 is provided at the inner circumference of the annular base section. Furthermore, the first damping section 31, that is to say the base section 31a thereof, has a profiled section 34 which extends radially inwards (in the radial direction R) transversely to the axial direction a. The at least partially wedge-shaped profile 34 rests on the bottom side against the motor housing 5 of the electric motor 4.
The first damping section 31 of the damping element 29 furthermore has a profiled section 35 which extends outward (outwardly) transversely to the axial direction a. The damping element 29 is supported with this profile section on an annular flange contour or stepped contour 37 arranged on the housing base 36 of the housing section 2a (fig. 7).
In the exemplary embodiment, the respective second damping section 30 of the damping element 29 has in each case two axial ribs 38, with which the respective second damping section 30 bears against the motor housing 5 of the electric motor 4. Two second damping sections 30, which are designed according to the type of axial strut, are formed diametrically opposite one another on the first damping section 31. The positioning of the two second damping sections 30 therefore corresponds to the flat side or the flattened area of the pole-pot-shaped motor housing 5. This already achieves a space-saving arrangement of the damping element 29 within the pot-shaped housing section 2a of the actuator housing 2.
Fig. 5 and 6 show a perspective cross section of the actuator housing 2. As can be seen from fig. 5, a ribbed or groove-like engagement contour 39, which extends in the axial direction a and is embodied to some extent as a radial groove, is introduced into the cylindrical housing inner wall 28 of the housing section within the pot-shaped housing section 2a of the axial housing 2. In the installed state, the corresponding second damping section 30 of the damping element 29 is inserted into this engagement contour 39. By partially inserting the second damping portions 30 of the damping element 29 in the radial direction R into the engagement contour 39 and thus reducing the installation space required for them within the housing portion 2a, a particularly compact design of the brake actuator 1 is achieved.
In the region of the housing base 36 of the pot-shaped housing section 2a of the actuator housing 2, a raised engagement contour 40 is provided. In the first damping section 31, that is to say in its base section 31a, a corresponding mating contour in the form of an engagement groove 41 engages in the mounting state in the raised engagement contour. This engagement geometry, which is formed by the housing-side engagement contour 40 and the damping element-side engagement groove 41, enables a particularly advantageous orientation and positioning of the damping element 29 within the cylindrical housing section 2a of the actuator housing 2.
Fig. 6 shows the precisely positioned position of the damping element 29 within the housing section 2 a.
Fig. 7 shows the positioning (position) of the damping element 29 in a plan view looking at the cylindrical housing section 2a of the actuator housing 2. It can be seen that the second axial damping portion 30 of the damping element 29 extends radially, i.e. with a portion of its radial extent in the radial direction R, into bead-like or groove-like engagement contours 39 of the housing portion 2a at mutually opposite positions in the housing inner wall 28. This achieves a particularly advantageous use of space within the housing section 2a, while the actuator housing 2 is particularly effectively decoupled from the technical and mechanical excitation of oscillations caused by the operationally induced oscillations or vibrations of the electric motor 4.
The invention relates generally to an electric brake actuator 1 for a motor vehicle, having an actuator housing 2, in the actuator housing there are accommodated an electric motor 4 with a motor shaft 19 and a pinion 20 fixed relative to the shaft and a carrier unit 6 and a multi-stage transmission 7, wherein the actuator housing 2 has a pot-shaped housing section 2a which accommodates the electric motor 4, which housing section has a housing base 36 and a housing inner wall 28 extending in the axial direction A of the motor shaft 19, wherein an elastic damping element 29 is arranged in the housing section 2a, which damping element has a first damping section 31 and at least one second damping section 30 extending in the axial direction A, wherein the first damping section 31 is arranged between the motor housing 5 and the housing bottom 36 and the second damping section 30 is arranged between the motor housing 5 and the housing inner wall 28.
The claimed invention is not limited to the embodiments described before. Rather, further variants of the invention can also be derived by the person skilled in the art within the framework of the disclosed claims without departing from the subject matter of the claimed invention. All individual features described in connection with different embodiments can especially also be combined in other ways within the framework of the disclosed claims without departing from the subject matter of the claimed invention.
The acoustic properties of the brake actuator 1 are therefore further improved by means of the spacer 8. The spacer bridge 8 forms an axial limitation of the transmission gears 17, 18, at least of the first and/or second (motor-side) transmission stage of the transmission 7, so that a corresponding distance is established between these transmission gears and the housing cover 3. In addition to the damping action of the damping element 29 arranged between the electric motor 4 and the housing inner wall 2 of the housing section 2a of the actuator housing 2, the spacer bridge 8 also contributes to a targeted decoupling of the transmission 7, in particular of the transmission parts (gears 17, 18) of the first and/or second transmission stage of the transmission, which decoupling, as is known, has a significant influence on the noise-causing acoustic excitation of the housing cover 3.
List of reference numerals
1 brake actuator
2 actuator casing
2a housing region/housing segment
3 casing cover
4 electric motor
5 Motor casing
6 bearing unit
7 drive mechanism
8 spacing bridge
8a bridge body
8b damping part
9 first bearing shaft
10 second bearing shaft
11. 12 receiving bushing
13 first double gear/toothed wheel
13a ring gear
13b pinion
14 second double gear/toothed wheel
14a external gear
14b pinion
15 third dual gear/gearwheel
16 driven pinion
17 first bearing seat
18 second bearing seat
19 Motor shaft
20 pinion
21 gear
22 gear
23 stator
24 rotor
25 commutator
26 coupling contact
27 coupling bush
28 inner wall of housing/inner wall of housing
29 damping element
30 second damping part
31 first damping part
31a base section
32 radial connection
33 stepped profile
34. 35 formed part
36 bottom of the shell
37 flange profile/step profile
38 axial rib
39 trough-like joining profile
40 raised engagement profile
41 mating profile/engagement groove
Axial direction A
R radial direction
Claims (10)
1. An electric brake actuator (1) for a motor vehicle, having an actuator housing (2) in which an electric motor (4) having a motor shaft (19) and a pinion (20) fixed relative to the shaft, and a carrier unit (6) and a multi-stage transmission (7) are accommodated, wherein the actuator housing (2) has a pot-shaped housing section (2a) which accommodates the electric motor (4) and which has a housing base (36) and a housing inner wall (28), in particular of the cylinder type, which extends in the axial direction (A) of the motor shaft (19),
it is characterized in that the preparation method is characterized in that,
-arranging an elastic damping element (29) having a first damping section (31) and at least one second damping section (30) extending in an axial direction (a) in a housing section (2a) of the actuator housing (2), and
-the first damping section (31) is arranged between a motor housing (5) of the electric motor (4) and a housing bottom (36) of the housing section (2a), while the second damping section (30) is arranged between the motor housing (5) and an inner housing wall (28) of the housing section (2 a).
2. Electric brake actuator (1) according to claim 1,
it is characterized in that the preparation method is characterized in that,
the pinion (20), which is fixed relative to the shaft, meshes with a first gear wheel (13) of a first gear stage, which is coupled to a last gear stage having a third gear wheel (15) and driven wheels (16) via a further gear stage having at least one second gear wheel (14).
3. Electric brake actuator (1) according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the damping element (29) has two second damping sections (30), in particular diametrically opposite one another.
4. Electric brake actuator (1) according to one of claims 1 to 3,
it is characterized in that the preparation method is characterized in that,
the or each second damping section (30) of the damping element (29) is formed onto the first damping section (31) of the damping element.
5. Electric brake actuator (1) according to one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
the first damping section (31) of the damping element (29) has an annular base section (31a), to which the or each second damping section (30) is molded by means of a radial connection (32).
6. Electric brake actuator (1) according to claim 5,
it is characterized in that the preparation method is characterized in that,
a stepped contour (33) is provided on the inner circumference of the annular base section (31a) of the first damping section (31).
7. Electric brake actuator (1) according to one of claims 1 to 6,
it is characterized in that the preparation method is characterized in that,
the first damping section (31) of the damping element (29) has a profile section (40) which extends radially inward transversely to the axial direction (A) and which rests against a motor housing (5) of the electric motor (4).
8. Electric brake actuator (1) according to one of claims 1 to 7,
it is characterized in that the preparation method is characterized in that,
the first damping section (31) of the damping element (29) has a profile section (35) which extends radially outward transversely to the axial direction (A), with which the damping element (29) is supported on a flange profile or a stepped profile (37) at a housing base (36) of the housing section (2 a).
9. Electric brake actuator (1) according to one of claims 1 to 8,
it is characterized in that the preparation method is characterized in that,
the or each second damping section (30) of the damping element (29) has at least one axial rib (38) facing the motor housing (5) of the electric motor (4).
10. Electric brake actuator (1) according to one of claims 1 to 9,
it is characterized in that the preparation method is characterized in that,
the housing inner wall (28) of the housing section (2a) has a bead-or groove-like engagement contour (39) in which the second damping section (30) of the damping element (29) is inserted and/or
-in the region of the housing base (36) of the housing section (2a) there is provided an engagement contour (40) which engages into a corresponding mating contour (41) of the first damping section (31) of the damping element (29).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019204182.5A DE102019204182A1 (en) | 2019-03-26 | 2019-03-26 | Electric brake actuator of a motor vehicle |
| DE102019204182.5 | 2019-03-26 | ||
| PCT/EP2020/058336 WO2020193620A1 (en) | 2019-03-26 | 2020-03-25 | Electric brake actuator for a motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113557185A true CN113557185A (en) | 2021-10-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080020286.3A Pending CN113557185A (en) | 2019-03-26 | 2020-03-25 | Electric brake actuator for a motor vehicle |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN113557185A (en) |
| DE (1) | DE102019204182A1 (en) |
| WO (1) | WO2020193620A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3116314B1 (en) * | 2020-11-19 | 2022-11-11 | Foundation Brakes France | Vibration reducer for gear motor unit for electric disc brake actuator |
| DE102022001411A1 (en) * | 2022-04-25 | 2023-10-26 | Mercedes-Benz Group AG | Electric drive device for a motor vehicle, in particular for a motor vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002014723A1 (en) * | 2000-08-17 | 2002-02-21 | Saia-Burgess Gmbh | Actuator for valves |
| DE102004048700A1 (en) * | 2004-10-06 | 2006-05-18 | Siemens Ag | Handbrake actuator for motor vehicle, has dual gear wheel whose smaller gear wheel stays in engagement with planetary wheels of planetary gear train, where motor and carrier unit stay in connection with housing by elastic unit |
| CN104302940A (en) * | 2013-04-17 | 2015-01-21 | 启洋电机株式会社 | Electronic parking brake actuator assembly |
| KR101592825B1 (en) * | 2015-06-22 | 2016-02-12 | 효성전기주식회사 | The central axis of fixation of the moc actuator gear box |
| CN106415049A (en) * | 2014-04-01 | 2017-02-15 | 福乐尼·乐姆宝公开有限公司 | Brake gear motor group |
| CN108006205A (en) * | 2016-10-27 | 2018-05-08 | 大陆-特韦斯股份有限公司 | Gear motor transmission device with improved noise isolation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202017104469U1 (en) * | 2017-07-27 | 2018-10-30 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Electric brake actuator of a motor vehicle |
-
2019
- 2019-03-26 DE DE102019204182.5A patent/DE102019204182A1/en active Pending
-
2020
- 2020-03-25 CN CN202080020286.3A patent/CN113557185A/en active Pending
- 2020-03-25 WO PCT/EP2020/058336 patent/WO2020193620A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002014723A1 (en) * | 2000-08-17 | 2002-02-21 | Saia-Burgess Gmbh | Actuator for valves |
| DE102004048700A1 (en) * | 2004-10-06 | 2006-05-18 | Siemens Ag | Handbrake actuator for motor vehicle, has dual gear wheel whose smaller gear wheel stays in engagement with planetary wheels of planetary gear train, where motor and carrier unit stay in connection with housing by elastic unit |
| CN104302940A (en) * | 2013-04-17 | 2015-01-21 | 启洋电机株式会社 | Electronic parking brake actuator assembly |
| CN106415049A (en) * | 2014-04-01 | 2017-02-15 | 福乐尼·乐姆宝公开有限公司 | Brake gear motor group |
| KR101592825B1 (en) * | 2015-06-22 | 2016-02-12 | 효성전기주식회사 | The central axis of fixation of the moc actuator gear box |
| CN108006205A (en) * | 2016-10-27 | 2018-05-08 | 大陆-特韦斯股份有限公司 | Gear motor transmission device with improved noise isolation |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020193620A1 (en) | 2020-10-01 |
| DE102019204182A1 (en) | 2020-10-01 |
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