CN203463527U - Vehicle electronic mechanical brake actuator - Google Patents
Vehicle electronic mechanical brake actuator Download PDFInfo
- Publication number
- CN203463527U CN203463527U CN201320161824.8U CN201320161824U CN203463527U CN 203463527 U CN203463527 U CN 203463527U CN 201320161824 U CN201320161824 U CN 201320161824U CN 203463527 U CN203463527 U CN 203463527U
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- CN
- China
- Prior art keywords
- planetary gear
- leading screw
- motor
- brake actuator
- support
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Abstract
The utility model relates to the technical field of vehicle brake system, specifically to a vehicle electronic mechanical brake actuator. The brake actuator aims to reduce axial size and prevent a motor from being overheated. The brake actuator is characterized in that a lead screw (4) is hollow. A bracket (6) is cylindrical with a base. The base is provided with an annular protrusion that shares the same axle center as the cylinder. The outboard of the bottom part of the bracket (6) is fixed on a brake clamp housing (7). The top part of the bracket (6) is disposed inside the lead screw (4) and sleeved outside a planetary gear deceleration mechanism (2). The brake actuator utilizes the hollow lead screw (4) and allows the planetary gear deceleration mechanism (2) to be disposed inside the lead screw, so that axial size is reduced. The motor (1) is disposed at the outboard of the electronic mechanical brake (EMB) actuator, so that the problem of heat radiation of the motor is effectively overcome.
Description
Technical field
The utility model belongs to brake system of car technical field, is specifically related to a kind of vehicle electric mechanical type brake actuator.
Background technique
In recent years, vehicle safety more and more obtains extensive concern, and brake system of car is and one of closely-related important system of vehicle safety.Particularly braking auxiliary (BA), electronic stability are controlled the expansion of the automobile active safety application of installation scopes such as (ESC), adaptive cruise control (ACC) and active collision avoidance, to just increase gradually of the requirement of initiatively braking.Though it is very ripe that traditional hydraulic pressure or Pneumatic automobile braking system have developed, also exist gas-liquid pipeline complexity, maintenance difficult, braking dynamic response slow, realize the distinct disadvantage such as initiatively braking difficulty.
On the other hand, along with the development of electronics and network technique, wire control technology develop rapidly, vehicle electric mechanical braking (EMB) system is arisen at the historic moment.It has cancelled traditional hydraulic braking pipeline, by motor, drive brake shoe, have simple in structure, be swift in response, braking ability is good, maintenance is simple, reliability is high, be easy to realize the advantages such as active boost, and can by CAN bus and other system be managed concentratedly and Information Sharing, be convenient to integrated with various control systems such as anti-blocking brake system (ABS), traction control system (TCS), electronic stabilizing control systems (ESC).
Home and abroad all big enterprises and colleges and universities have all done a series of research and have applied for Patents for EMB system.Wherein, U.S. Delphi company applied for the EMB patent that a patent No. is US6626270 in 2003, main feature be planetary pinion and electric machine built-in in hollow ball screw, effectively reduced axial dimension.Although its structure is compact, the structure of electric machine built-in easily makes motor overheating cause Braking efficiency decline even motor damage, braking failure.
Model utility content
The purpose of this utility model is to reduce the axial dimension of final controlling element, avoids again motor overheating, and a kind of vehicle electric mechanical type brake actuator is provided.
The technical solution adopted in the utility model:
A kind of vehicle electric mechanical type brake actuator, comprise motor, planetary gear reducing mechanism, ball screw pair, support, caliper shell, friction facing and brake disc, ball screw pair comprises nut, leading screw and ball, and described leading screw adopts hollow leading screw; Support is cylindric with base, is provided with the annular projection with cylinder concentric on base, and the bottom outside of support is fixed on caliper shell; The top of support is arranged on leading screw inside, is sleeved on planetary gear reducing mechanism outside; Motor is fixedly connected with frame bottom, and the output terminal of rotor and the sun gear of planetary gear reducing mechanism adopt interference fit.
The output shaft of planetary gear reducing mechanism as above is connected with key b with leading screw left end.
It also comprises elastic rubber ring, and elastic rubber ring as above is arranged in the groove of nut outside, caliper shell inner side.
The beneficial effects of the utility model are:
The utility model adopts the leading screw 4 of hollow-core construction and planetary gear reducing mechanism 2 is built in to leading screw inside, has reduced axial dimension; By motor 1 being arranged in to EMB final controlling element outside, effectively solved the heat dissipation problem of motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of vehicle electric mechanical type brake actuator of the present utility model;
In figure: 1. motor, 2. planetary gear reducing mechanism, 3. nut, 4. leading screw, 5. ball, 6. support, 7. caliper shell, 8. left side friction facing, 9. right side friction facing, 10. brake disc, 11, key a, 12. key b, 13. thrust-bearings, 14. elastic rubber rings.
Embodiment
Below in conjunction with drawings and Examples, a kind of vehicle electric mechanical type brake actuator of the present utility model is described further:
A vehicle electric mechanical type brake actuator, comprises motor 1, planetary gear reducing mechanism 2, ball screw pair, support 6, caliper shell 7, left side friction facing 8, right side friction facing 9, brake disc 10, elastic rubber ring 14.Wherein, ball screw pair comprises nut 3, leading screw 4 and ball 5; Nut 3 is Spielpassung with the endoporus of caliper shell 7, both connect to stop nut 3 to rotate by key a11, elastic rubber ring 14 is arranged in the groove of nut 3 outsides, caliper shell 7 inner sides, stops not damped condition lower nut 3 with respect to the axial float of caliper shell 7.Leading screw 4 adopts hollow leading screw.Support 6 is cylindric with base, is provided with the annular projection with cylinder concentric on base, and its bottom outside is bolted on caliper shell 7; Its top is arranged on leading screw 4 inside, is sleeved on planetary gear reducing mechanism 2 outsides planetary gear reducing mechanism 2 is fixing by screw, motor 1 is fixedly connected with its bottom by screw, and thrust-bearing 13 adopts interference fit to be fixedly mounted on the annular projection inside of its base exterior.The output shaft of planetary gear reducing mechanism 2 is connected to come transmitting torque with leading screw 4 left ends with key b12; The output terminal of motor 1 rotor and the sun gear of planetary gear reducing mechanism 2 adopt interference fit.
Motor 1, planetary gear reducing mechanism 2, caliper shell 7, friction facing 8, brake disc 10, elastic rubber ring 14 are existing matured product, are commercially available.Caliper shell 7, left side friction facing 8, the position relationship of right side friction facing 9 and brake disc 10, and the position relationship of ball screw pair inner nut 3, leading screw 4 and ball 5 is prior art.
When implementing braking, the power of motor 1 rotor output is passed to leading screw 4 after planetary gear reducing mechanism 2 slows down increase moment of torsion.Leading screw 4 rotates, and nut 3 moves axially, and promotes right side friction facing 9 left close to brake disc 10, until right side brake clearance is eliminated.This back nut 3 can not translation, and can not rotate under the constraint of key b12, when forcing leading screw 4 to rotate, move axially extruding thrust-bearing 12 to the right, and drive support 6 to move right together with caliper shell 7, left side friction facing 8 to brake disc 10 near eliminating to left side brake clearance.After this thereby both sides friction facing is pressed on brake disc 10 simultaneously and implements to brake.
When brake off, the rotor of motor 1 suitably reverses, and nut 3 and screw mandrel 4 oppositely move, and both sides friction facing and brake disc 10 unclamp, and braking is removed.
The utility model adopts the leading screw 4 of hollow-core construction and planetary gear reducing mechanism 2 is built in to leading screw inside, has reduced axial dimension; By motor 1 being arranged in to EMB final controlling element outside, effectively solved the heat dissipation problem of motor.
Claims (3)
1. a vehicle electric mechanical type brake actuator, comprise motor (1), planetary gear reducing mechanism (2), ball screw pair, support (6), caliper shell (7), friction facing (8) and brake disc (9), ball screw pair comprises nut (3), leading screw (4) and ball (5), it is characterized in that: described leading screw (4) adopts hollow leading screw; Support (6) is cylindric with base, is provided with the annular projection with cylinder concentric on base, and the bottom outside of support (6) is fixed on caliper shell (7); The top of support (6) is arranged on leading screw (4) inside, is sleeved on planetary gear reducing mechanism (2) outside; Motor (1) is fixedly connected with support (6) bottom, and the output terminal of motor (1) rotor and the sun gear of planetary gear reducing mechanism (2) adopt interference fit; Thrust-bearing (13) is fixedly mounted on the annular projection inside of support (6) base exterior; The output shaft of planetary gear reducing mechanism (2) is connected with leading screw (4) left end.
2. a kind of vehicle electric mechanical type brake actuator according to claim 1, is characterized in that: the output shaft of described planetary gear reducing mechanism (2) with leading screw (4) left end with key b(12) be connected.
3. a kind of vehicle electric mechanical type brake actuator according to claim 1, is characterized in that: it also comprises elastic rubber ring (14), and described elastic rubber ring (14) is arranged in the groove of nut (3) outside, caliper shell (7) inner side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320161824.8U CN203463527U (en) | 2013-04-03 | 2013-04-03 | Vehicle electronic mechanical brake actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320161824.8U CN203463527U (en) | 2013-04-03 | 2013-04-03 | Vehicle electronic mechanical brake actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463527U true CN203463527U (en) | 2014-03-05 |
Family
ID=50175894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320161824.8U Expired - Fee Related CN203463527U (en) | 2013-04-03 | 2013-04-03 | Vehicle electronic mechanical brake actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463527U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806669A (en) * | 2015-04-23 | 2015-07-29 | 吉林大学 | Vehicle electronic mechanical brake actuator |
| CN104949842A (en) * | 2015-06-16 | 2015-09-30 | 吉林大学 | Vehicle hybrid brake system test development testbed |
| CN108488266A (en) * | 2018-06-12 | 2018-09-04 | 北京航空航天大学 | A kind of disc-type brake gear suitable for miniature unmanned vehicle wheel |
| CN113007247A (en) * | 2021-04-22 | 2021-06-22 | 湖北三环车桥有限公司 | Worm adjusting device for floating drum brake |
-
2013
- 2013-04-03 CN CN201320161824.8U patent/CN203463527U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806669A (en) * | 2015-04-23 | 2015-07-29 | 吉林大学 | Vehicle electronic mechanical brake actuator |
| CN104806669B (en) * | 2015-04-23 | 2017-07-21 | 吉林大学 | A kind of vehicle electric brake actuator |
| CN104949842A (en) * | 2015-06-16 | 2015-09-30 | 吉林大学 | Vehicle hybrid brake system test development testbed |
| CN108488266A (en) * | 2018-06-12 | 2018-09-04 | 北京航空航天大学 | A kind of disc-type brake gear suitable for miniature unmanned vehicle wheel |
| CN113007247A (en) * | 2021-04-22 | 2021-06-22 | 湖北三环车桥有限公司 | Worm adjusting device for floating drum brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20190403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |