CN203404328U - Integrated EPB driving device for parking braking - Google Patents
Integrated EPB driving device for parking braking Download PDFInfo
- Publication number
- CN203404328U CN203404328U CN201320439490.6U CN201320439490U CN203404328U CN 203404328 U CN203404328 U CN 203404328U CN 201320439490 U CN201320439490 U CN 201320439490U CN 203404328 U CN203404328 U CN 203404328U
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- parking braking
- epb
- motor
- screw nut
- planetary gear
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Abstract
The utility model discloses an integrated EPB driving device for parking braking. The integrated EPB driving device for parking braking is small in occupied space and high in control operation precision. The integrated EPB driving device for parking braking comprises a driving mechanism provided with a driving motor, a planetary gear reducing mechanism and a lead screw nut transmission mechanism, wherein the driving motor enables a motor shaft to be connected with a sun wheel of the planetary gear reducing mechanism through a gear pair, the planetary gear reducing mechanism drives the lead screw nut transmission mechanism to operate, the lead screw nut transmission mechanism drives a braking piston placed in a braking wheel cylinder through a spline coupling shaft, and the braking piston pushes a friction piece to apply the brake on a brake disc; the driving mechanism is provided with a motor rotating circle number sensor, and an EPB control unit controls parking braking and releases parking braking in real time according to the motor rotating circle number and motor current. The integrated EPB driving device for parking braking has the advantages of being high in transmission efficiency, reliable in control algorithm and capable of avoiding sliding and preventing failures.
Description
Technical field
The utility model belongs to automobile parking braking technical field, is specifically related to the EPB drive unit of parking braking.
Background technique
Conventional parking braking is undertaken by parking brake, and its needs along with vehicle need frequently carry out manually-operable sometimes, to guarantee the needs of vehicle parking.But concerning new driver, it, causes stopping working, slip the generation of car phenomenon at ramp state often because parking brake coordinates badly with clutch, throttle at ramp state; After parking, or exist and forget the phenomenon pulling the hand brake again, cause and have potential safety hazard.Development along with auto electronic control technology, can realize parking braking by a kind of integrated form EPB at present, it can need the operation of parking braking automatically to identify to some, to uphill starting, operation is simplified simultaneously: after driver applies power to gas pedal, or press and separate after button, vehicle can suitably postpone to separate the time of staying according to ramp size, makes vehicle be unlikely to slip slope etc.But there is many deficiencies in existing EPB drive unit, for example between drive motor and gear, adopt belt transmission, and its brake shoe promotes by wedge-type brake calipers, wedge-type brake calipers promotes to exist amount of movement to be difficult to accurately control and the large deficiency of electronic control arithmetic eror; Next is low with the precision of transmission, driving belt is because resiliently deformable exists slippage loss and hysteresis loss, driving belt on belt wheel repeatedly deflection and repeatedly flexible its inside that makes cause power loss because of friction, especially band is in transmission connection large apart from making to take up space greatly, this is extremely uneconomic, as is generally known the fact be, in Motor Vehicle, just as leading role's motor, also must as hermit crab, crispatura in car bonnet the inside at last, and the EPB drive unit belt transmission of a parking braking, in occupation of larger space, be not too suitable really.
For example China Patent No. 200710302159.9, name is called the patent of invention of " single motor electro wedge brake system that adopts solenoid mechanism for implementing additional functions ", a kind of single motor electro wedge brake system that adopts solenoid mechanism for implementing additional functions is disclosed, comprise the electronic pedal with abrupt deceleration vehicle by pilot control, during car brakeing, by the information of measuring in employing vehicle, produce the ECU of control signal, the wedge-type brake calipers that comprises inside and outside brake shoe assembly and torque member, wedge-type brake calipers assembly, receive separately wedge-type brake calipers assembly and be fixed on the housing in that side of wedge-type brake calipers.This patent application wedge-type brake calipers, makes the deficiency that control algorithm error is large, exist brake accuracy to reduce.
Summary of the invention
The utility model technical issues that need to address are, the application that overcomes the parking braking EPB drive unit existence of prior art takes up space large and applies the large defect of wedge-type brake calipers control algorithm error with transmission, and a kind of parking braking EPB drive unit little and that control algorithm precision is high that takes up space is provided.
The purpose of this utility model is achieved by following technical proposals: a kind of integrated form EPB drive unit of parking braking, comprise the driving mechanism that is provided with drive motor, EPB control unit, planetary gear reducing mechanism, the housing of screw nut driven mechanism and loading said mechanism, it is characterized in that, described motor is according to the instruction action of EPB control unit, and by gear pair, the sun gear of motor shaft and planetary gear reducing mechanism is connected, planetary gear reducing mechanism drives screw nut driven mechanical operation, screw nut driven mechanism is driven and is placed in the brake piston in wheel cylinder by spline coupling axle, brake piston promotes friction plate to brake disc apply brake, EPB drive unit is provided with electric machine rotation number of turns sensor, and EPB control unit is controlled in real time parking braking or removed parking braking according to the electric machine rotation number of turns and current of electric.
Drive motor slows down and planetary gear reducing mechanism by gear pair, Motor torque output is converted into the axial output of screw nut driven mechanism, and exported the screw rod that makes to be placed in wheel cylinder piston by spline coupling axle and carried out driving, screw rod promotes the brake piston in wheel cylinder, brake piston promotes friction plate to brake disc apply brake, realizes the parking-brake action to vehicle.The transmission of feed screw nut can reach high precision, and the EPB computer that is therefore highly advantageous to is carried out accurate calculation and control.
As preferably, the reduction speed ratio of described gear pair is 2:1～5:1.
As preferably, the reduction speed ratio of described gear pair is 3:1.
As preferably, electric machine rotation number of turns sensor is built in motor internal, and electric machine rotation number of turns sensor is connected with EPB control unit.
As preferably, described housing is made of plastics.
The beneficial effects of the utility model are:
1.Gai mechanism transmits by gear mechanism, and transmission efficiency is high;
2. electronic control algorithm is reliable, avoids the generation of misoperation;
3. uphill starting, the slope phenomenon of can effectively avoiding slipping occurs;
4. parking parking automatic parking and strain again function, can effectively prevent that failure phenomenon from occurring.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment's of the utility model STRUCTURE DECOMPOSITION schematic diagram;
Fig. 2 is that drive motor is by gear pair and planetary gear reducing mechanism schematic diagram;
Fig. 3 is feed screw nut and EPB drive unit connection diagram.
In figure, driving mechanism 1; Motor 2; Motor gear 21; Reduction gear 22; Planetary gear reducing mechanism 3; Sun gear 31; Planetary pinion tank tower 32; Planetary pinion tank tower lid 33; Planetary gear set 34; Screw nut driven mechanism 4; Spline coupling axle 41; Leading screw 42; Nut platen 43; Wheel cylinder 5; Brake piston 6; Friction plate 71; Brake disc 72; Housing 8.
Embodiment
Below in conjunction with accompanying drawing and specific embodiments, the utility model is further described.
Embodiment: as shown in Figure 1, a kind of integrated form EPB drive unit of parking braking, comprise the driving mechanism 1, planetary gear reducing mechanism 3 and the screw nut driven mechanism 4 that are provided with drive motor 2, described motor 2 is connected the sun gear 31 of motor shaft and planetary gear reducing mechanism 3 by gear pair, planetary gear reducing mechanism 3 is installed in planetary pinion tank tower 32, and hide with planetary pinion tank tower lid 33, gear pair comprises motor gear 21 and reduction gear 22, the reduction speed ratio of gear pair is 3:1.
Planetary gear reducing mechanism 3 comprises sun gear 31, planetary gear set 34 and spline coupling axle 41,
Planetary gear reducing mechanism 3 drives 4 runnings of screw nut driven mechanism, screw nut driven mechanism 4 is driven and is placed in the brake piston 6 in wheel cylinder 5 with spline coupling axle 41 by the nut platen 43 of leading screw 42 and nut and nut front end, and brake piston 6 promotes 71 pairs of brake disc 72 apply brakes of friction plate; Driving mechanism is provided with electric machine rotation number of turns sensor, and EPB control unit is controlled in real time parking braking and removed parking braking according to the electric machine rotation number of turns and current of electric.Driving mechanism is integrated in a housing 8, and electric machine rotation number of turns sensor is built in motor internal, and EPB control unit is rotated the number of turns and controlled motor action by interface perception; EPB control unit is according to the sliding force of dip sensor signal estimation vehicle, and send instruction, by opening the size of throttle, calculate the braking force that need to apply, by high-speed CAN and engine computer communication, know the size of engine traction simultaneously, the braking force again needs being applied is scaled the amounts of rotation of feed screw nut, EPB control unit calculates the increase along with engine traction automatically, correspondingly reduces braking force; When tractive force enough overcomes sliding force, EPB control unit order-driven motor 2 brake offs, thus realize the smooth and easy starting of vehicle.This mechanism can guarantee vehicle on 30% slope parking without downslide.This system is carried out compensation automatically in addition, if vehicle through pressure moving after parking, brake disc 72 can after certain hour because temperature declines and friction plate 71 between produce gap, now drive motor 2 can start automatically, drive feed screw nut to compensate the gap that declines and produce due to temperature, guarantee parking effect, as shown in Figure 2 and Figure 3.
Generally, drive motor 2 slows down by gear pair and planetary gear reducing mechanism 3, the moment of torsion output of drive motor 2 is converted into the axial output of screw nut driven mechanism 4, and exported and by spline coupling axle 41, make to be placed in leading screw in the middle of wheel cylinder 5 inside brake pistons 6 and carry out and drive, leading screw promotes the brake piston 6 in wheel cylinder 5, brake piston 6 promotes 71 pairs of brake disc 72 apply brakes of friction plate, realizes the parking-brake action to vehicle.The transmission of feed screw nut can reach high precision, and the EPB computer that is therefore highly advantageous to is carried out accurate calculation and control.
The utility model is the EPB drive unit for automobile parking braking, have advantages of that transmission efficiency is high, control algorithm is reliable, avoid slipping slope and prevent that failure phenomenon from occurring, if those skilled in the art does simple modification or replacement to foregoing invention content, such change can not think to depart from scope of the present utility model, all like this to the apparent modification of those skilled in the art by within being included in the scope of claim of the present utility model.
Claims (5)
1. the integrated form EPB drive unit of a parking braking, comprise the driving mechanism that is provided with drive motor, EPB control unit, planetary gear reducing mechanism, the housing of screw nut driven mechanism and loading said mechanism, it is characterized in that, described motor is according to the instruction action of EPB control unit, and by gear pair, the sun gear of motor shaft and planetary gear reducing mechanism is connected, planetary gear reducing mechanism drives screw nut driven mechanical operation, screw nut driven mechanism is driven and is placed in the brake piston in wheel cylinder by spline coupling axle, brake piston promotes friction plate to brake disc apply brake, EPB drive unit is provided with electric machine rotation number of turns sensor, and EPB control unit is controlled in real time parking braking or removed parking braking according to the electric machine rotation number of turns and current of electric.
2. the integrated form EPB drive unit of a kind of parking braking according to claim 1, the reduction speed ratio of described gear pair is 2:1～5:1.
3. the integrated form EPB drive unit of a kind of parking braking according to claim 2, is characterized in that, the reduction speed ratio of described gear pair is 3:1.
4. according to the integrated form EPB drive unit of a kind of parking braking described in claim 1 or 2 or 3, it is characterized in that, electric machine rotation number of turns sensor is built in motor internal, and electric machine rotation number of turns sensor is connected with EPB control unit.
5. the integrated form EPB drive unit of a kind of parking braking according to claim 4, is characterized in that, described housing is made of plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439490.6U CN203404328U (en) | 2013-07-23 | 2013-07-23 | Integrated EPB driving device for parking braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439490.6U CN203404328U (en) | 2013-07-23 | 2013-07-23 | Integrated EPB driving device for parking braking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404328U true CN203404328U (en) | 2014-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320439490.6U Expired - Fee Related CN203404328U (en) | 2013-07-23 | 2013-07-23 | Integrated EPB driving device for parking braking |
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| CN (1) | CN203404328U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257741A (en) * | 2015-11-04 | 2016-01-20 | 浙江万向精工有限公司 | Electronic parking brake power assembly transmission mechanism |
| CN105333140A (en) * | 2015-11-26 | 2016-02-17 | 合肥工业大学 | Parking locking mechanism for automobile speed changer |
| CN105480219A (en) * | 2015-12-30 | 2016-04-13 | 吉林东光奥威汽车制动系统有限公司 | Automobile electronic parking brake |
| CN105606635A (en) * | 2015-12-29 | 2016-05-25 | 哈尔滨工业大学 | Sample testbed for EBSD (Electron Back-Scattered Diffraction) testing |
| CN105905083A (en) * | 2016-05-20 | 2016-08-31 | 浙江万向精工有限公司 | Electronic parking brake assembly |
| CN106043265A (en) * | 2015-04-13 | 2016-10-26 | 株式会社万都 | Electronic parking brake system in vehicle and control method thereof |
| CN107600051A (en) * | 2017-08-15 | 2018-01-19 | 浙江零跑科技有限公司 | New kind of brake gears used for electric vehicle and its method |
| CN109424667A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424668A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN110770479A (en) * | 2017-06-14 | 2020-02-07 | 德纳汽车系统集团有限责任公司 | Scalable actuation mechanism and method of operating same |
| CN111503189A (en) * | 2020-04-08 | 2020-08-07 | 奇瑞商用车（安徽）有限公司 | Brake wheel cylinder and friction plate gap adjusting device and brake friction plate replacing method |
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2013
- 2013-07-23 CN CN201320439490.6U patent/CN203404328U/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043265B (en) * | 2015-04-13 | 2018-12-18 | 株式会社万都 | The electronic brake system and its control method of vehicle |
| CN106043265A (en) * | 2015-04-13 | 2016-10-26 | 株式会社万都 | Electronic parking brake system in vehicle and control method thereof |
| CN105257741A (en) * | 2015-11-04 | 2016-01-20 | 浙江万向精工有限公司 | Electronic parking brake power assembly transmission mechanism |
| CN105333140A (en) * | 2015-11-26 | 2016-02-17 | 合肥工业大学 | Parking locking mechanism for automobile speed changer |
| CN105606635B (en) * | 2015-12-29 | 2018-10-02 | 哈尔滨工业大学 | Sampling test platform for EBSD tests |
| CN105606635A (en) * | 2015-12-29 | 2016-05-25 | 哈尔滨工业大学 | Sample testbed for EBSD (Electron Back-Scattered Diffraction) testing |
| CN105480219B (en) * | 2015-12-30 | 2019-03-12 | 吉林东光奥威汽车制动系统有限公司 | A kind of automotive electronic parking brake |
| CN105480219A (en) * | 2015-12-30 | 2016-04-13 | 吉林东光奥威汽车制动系统有限公司 | Automobile electronic parking brake |
| CN105905083A (en) * | 2016-05-20 | 2016-08-31 | 浙江万向精工有限公司 | Electronic parking brake assembly |
| US11959550B2 (en) | 2017-06-14 | 2024-04-16 | Dana Automotive Systems Group, Llc | Actuation mechanism |
| US11619302B2 (en) | 2017-06-14 | 2023-04-04 | Dana Automotive Systems Group, Llc | Actuation mechanism |
| CN110770479B (en) * | 2017-06-14 | 2022-04-19 | 德纳汽车系统集团有限责任公司 | Scalable actuation mechanism and method of operating same |
| CN110770479A (en) * | 2017-06-14 | 2020-02-07 | 德纳汽车系统集团有限责任公司 | Scalable actuation mechanism and method of operating same |
| US11608891B2 (en) | 2017-06-14 | 2023-03-21 | Dana Automotive Systems Group, Llc | Actuation mechanism |
| CN107600051A (en) * | 2017-08-15 | 2018-01-19 | 浙江零跑科技有限公司 | New kind of brake gears used for electric vehicle and its method |
| CN107600051B (en) * | 2017-08-15 | 2020-03-03 | 浙江零跑科技有限公司 | Novel brake device for electric automobile and method thereof |
| CN109424668A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424667B (en) * | 2017-08-29 | 2020-11-06 | 比亚迪股份有限公司 | Disc brake and vehicle |
| WO2019042318A1 (en) * | 2017-08-29 | 2019-03-07 | 比亚迪股份有限公司 | Disc brake and vehicle |
| CN109424667A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN111503189A (en) * | 2020-04-08 | 2020-08-07 | 奇瑞商用车（安徽）有限公司 | Brake wheel cylinder and friction plate gap adjusting device and brake friction plate replacing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20190723 |