CN209053996U - A kind of electromechanical brake based on magnetic powder cluth - Google Patents

A kind of electromechanical brake based on magnetic powder cluth Download PDF

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Publication number
CN209053996U
CN209053996U CN201821441867.0U CN201821441867U CN209053996U CN 209053996 U CN209053996 U CN 209053996U CN 201821441867 U CN201821441867 U CN 201821441867U CN 209053996 U CN209053996 U CN 209053996U
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China
Prior art keywords
magnetic powder
braking clamp
powder cluth
piston
gear
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CN201821441867.0U
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Chinese (zh)
Inventor
刘晓莹
蔡伟
陈鹏飞
郑利水
袁炳
张洪波
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Zhejiang Asia Pacific Mechanical and Electronic Co Ltd
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Zhejiang Asia Pacific Mechanical and Electronic Co Ltd
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Abstract

The utility model discloses a kind of electromechanical brakes based on magnetic powder cluth.The output shaft of motor is connected through two reduction gear with the driving part of magnetic powder cluth, the slave unit of magnetic powder cluth and ballscrew shaft are coaxially connected, ballscrew shaft and piston are installed in braking clamp body, the bore passages bottom surface of braking clamp body is provided with central through hole, extend on the outside of bore passages and stretches out and be bent to form pincers portion, ballscrew shaft inner end is set in braking clamp body in the central through hole of bore passages bottom surface and connects after stretching out braking clamp body with the slave unit of magnetic powder cluth, ball-screw nut is fixedly connected by screw with the inner end of piston, piston bush moves in the bore passages of braking clamp body and along bore passages, piston outer end is connected with the first friction plate.The utility model transmits power using magnetic powder cluth, changes transmitted torque in real time by changing the electric current of magnetic powder cluth, is more finely controlled the output torque of electromechanical brake.

Description

A kind of electromechanical brake based on magnetic powder cluth
Technical field
The utility model relates to automobile brake technical fields, and in particular to a kind of electric mechanical based on magnetic powder cluth Brake.
Background technique
With the continuous improvement that people require braking ability, ABS (ANTI LOCK is added in conventional hydraulic braking system System), TCS (traction control system), ESC (electronic stabilizing control system), the functions such as ACC (active collision avoidance technology), then make Accessory structure in dynamic system is more and more so that braking system more sophisticated, also increase the hidden danger of hydraulic circuit leakage with And the difficulty of assembly, maintenance.
With the fast development of automobile intelligent technology, electric mechanical braking technology is since its structure is simple, has excellent performance, ring The advantages of guarantor, is using more and more extensive.Magnetic powder cluth is the important branch of electromagnetic clutch in electric mechanical braking technology, is had Following advantages: transmitting torque and exciting current change linearly in sizable range first;Secondly magnetic powder cluth is with magnetic Medium of the powder as transmitting torque, it is without friction when responding rapidly, and connecting;Last master and slave moving part can be fully connected, and be driven Efficiency nearly 100%.
Summary of the invention
In order to solve the problems, such as background technique, the utility model proposes a kind of electronics based on magnetic powder cluth Mechanical brake, the medium using magnetic powder cluth as transmitting torque, so that structure is more succinct, braking response is quicker With it is sensitive.
The technical solution of the utility model is as follows:
The utility model includes motor, two reduction gear, magnetic powder cluth, ballscrew shaft, ball, ball-screw spiral shell Mother, piston, braking clamp body, the first friction plate, the second friction plate and brake disc;Magnetic powder cluth is mainly by driving part and driven Component is formed by connecting by magnetic powder, and the output shaft of motor is connected through two reduction gear with the driving part of magnetic powder cluth, magnetic The slave unit of powder clutch and ballscrew shaft are coaxially connected, and ballscrew shaft and piston are installed in braking clamp body, braking Caliper is equipped with bore passages, and the bottom surface of braking clamp body bore passages is provided with central through hole, and the extension stretching of bore passages outside is simultaneously curved Folding forms pincers portion, and ballscrew shaft inner end is set in braking clamp body in the central through hole of bore passages bottom surface and stretches out caliper It is connected after body with the slave unit of magnetic powder cluth, ballscrew shaft outer end is set with to form ball through ball and ball-screw nut Screw pair, ball-screw nut are fixedly connected by screw with the inner end of piston, and piston bush is mounted in the inner cavity of braking clamp body It is moved in channel and along bore passages, piston outer end is connected with the first friction plate;Two reduction gear include cone gear and Large and small roller gear, bevel pinion are connected to the output end of motor, and big roller gear is connected to the initiative part of magnetic powder cluth The axis of part, bevel pinion and bevel gear wheel intermeshing and two gears intersects vertically, and bevel gear wheel and small cylinder gear are coaxial It is fixedly connected, small cylinder gear and the intermeshing of big roller gear.
The protruding shaft end of the ballscrew shaft is axially fixed in the central through hole outer end face of braking clamp body by circlip, card Spring is placed in braking clamp body outer end and blocks ballscrew shaft, so that ballscrew shaft, which can only rotate, to be moved axially.
Extend between the pincers portion stretched out on the outside of the piston outer end and braking clamp body bore passages and brake disc is installed, brakes The first friction plate of one of end face of disk is connected with piston outer end face, the second friction plate of other end and system of brake disc The pincers portion inner sidewall of moving caliper connects.
Deceleration torque increase not only may be implemented in the bevel gear, can also change motor power direction of transfer, to reduce electricity The axial dimension of sub- mechanical brake.
The cone gear and large and small roller gear are integrated in same gear-box.
The motor and magnetic powder cluth are connect with entire car controller.
The piston is socketed in the bore passages of braking clamp body through rectangular loop sealing.
The beneficial effects of the utility model are:
1, the utility model eliminates the connection of conventional hydraulic brake piping, so that structure is more compact, eliminates hydraulic time Road risk of leakage.
2, the utility model transmits power using magnetic powder cluth, can be by changing the electric current of magnetic powder cluth come in real time Change transmitted torque, and the torque transmitted and exciting current change linearly in sizable range, it can be more It is finely controlled the output torque of electromechanical brake.
Detailed description of the invention
Fig. 1 is electromechanical brake structural schematic diagram described in the utility model.
In Fig. 1: 1- motor, 2- bevel pinion, 3- bevel gear wheel, 4- small cylinder gear, the big roller gear of 5-, 6- are actively Component, 7- magnetic powder, 8- slave unit, 9- circlip, 10- ballscrew shaft, 11- braking clamp body, 12- screw, 13- ball, 14- Ball-screw nut, 15- piston, 16- rectangular loop, the first friction plate of 17-, the second friction plate of 18-, 19- brake disc.
Specific embodiment
As shown in Figure 1, electromechanical brake includes motor 1, two reduction gear, magnetic powder cluth, ballscrew shaft 10, ball 13, ball-screw nut 14, piston 15, braking clamp body 11, the first friction plate 17, the second friction plate 18 and brake disc 19;Magnetic powder cluth is mainly formed by connecting by driving part 6 and slave unit 8 by magnetic powder 7, and the output shaft of motor 1 is through second level The connection of the driving part 6 of deceleration mechanism and magnetic powder cluth, the slave unit 8 and ballscrew shaft 10 of magnetic powder cluth are coaxial Connection, ballscrew shaft 10 and piston 15 are installed in braking clamp body 11, and braking clamp body 11 is equipped with bore passages, braking clamp body 11 The bottom surface of bore passages is provided with central through hole, extends on the outside of bore passages and stretches out and be bent to form pincers portion, in ballscrew shaft 10 In central through hole of the end cap loaded on bore passages bottom surface in braking clamp body 11 and stretch out after braking clamp body 11 and magnetic powder cluth Slave unit 8 connects, and 10 outer end of ballscrew shaft forms ball guide screw nat through ball 13 and the suit of ball-screw nut 14, The ball screw framework being mainly made of ballscrew shaft 10, ball 13 and ball-screw nut 14, ball-screw nut 14 are logical It crosses screw 12 to be fixedly connected with the inner end of piston 15, piston 15 is sleeved in the bore passages of braking clamp body 11 and along bore passages Mobile, 15 outer end of piston is connected with the first friction plate 17.
As shown in Figure 1, two reduction gear includes cone gear and large and small roller gear, bevel pinion 2 is connected to The output end of motor 1, big roller gear 5 are connected to the driving part 6 of magnetic powder cluth, and bevel pinion 2 and bevel gear wheel 3 are mutual The engagement and axis of two gears intersects vertically, bevel gear wheel 3 and small cylinder gear 4 are fixedly and coaxially connected, small cylinder gear 4 and big Roller gear 5 is intermeshed.
As shown in Figure 1, the protruding shaft end of ballscrew shaft 10 is axially fixed in the center of braking clamp body 11 by circlip 9 Through-hole outer end face, circlip 9 is placed in 11 outer end of braking clamp body and blocks ballscrew shaft 10, so that ballscrew shaft 10 can only turn It is dynamic to move axially.
It is equipped between the pincers portion stretched out as shown in Figure 1, extending on the outside of 11 bore passages of 15 outer end of piston and braking clamp body The first friction plate of one of end face 17 of brake disc 19, brake disc 19 is connected with 15 outer end face of piston, brake disc 19 it is another One the second friction plate of end face 18 is connected with the pincers portion inner sidewall of braking clamp body 11.
The work implementation process of the utility model is as follows:
A, electromechanical brake service braking operation is as follows:
When driver's brake pedal, vehicle control unit controls motor 1 starts to rotate, and power is exported through motor 1 Axis transmits the bevel pinion 2 of deceleration mechanism, and bevel pinion 2 is meshed with bevel gear wheel 3, and power passes to bevel gear wheel 3, motor 1 power direction of transfer changes, and bevel gear wheel 3 transfers power to big roller gear 5 by small cylinder gear 4.Motor 1 The power of output by two reduction gear amplify, the power being exaggerated by the output shaft of big roller gear 5 pass to magnetic powder from The driving part 6 of clutch.Execute braking when, magnetic powder cluth be powered, under the action of electromagnetic force, magnetic powder cluth it is master and slave Dynamic component 6,8 engages, and power is transmitted to ballscrew shaft 10 by the slave unit of magnetic powder cluth.Ballscrew shaft 10 rotates, Drive ball-screw nut 14 mobile to 19 direction of brake disc, thus mobile to 19 direction of brake disc with piston 15.Piston 15 Push the first friction plate 17 mobile to 19 direction of brake disc.First friction plate 17 eliminates its gap between brake disc 19, after It is continuous that brake disc 19 is pushed to continue to move to the second friction plate 18, until brake disc 19 is contacted with the second friction plate 18, pass through friction Effect realizes that automobile brake slows down.
B, electromechanical brake release braking process is as follows:
When driver discharges brake pedal, the coil blackout of magnetic powder cluth, electromagnetic force disappears, the master of magnetic powder cluth Dynamic component 6 and slave unit 8 separate.Motor 1 continues to rotate originally at this time, the power interruption of ballscrew shaft 10.Due to Ball screw framework is moved without self-lock ability, ball-screw nut 9 to 1 direction of motor, and band piston 15 is transported to 1 direction of motor It is dynamic, so that the first friction plate 17 leaves brake disc 19, realize braking release.
After braking release, if brake pedal, magnetic powder cluth are once again powered up driver again at once, magnetic powder cluth Driving part 6 and slave unit 8 are re-engaged, and repeat above-mentioned braking process;If driver's no longer brake pedal, vehicle Controller control motor 1 stops operating.
The entire car controller of the utility model can change the electricity of each wheel by changing the electric current of magnetic powder cluth The clamping force of sub- mechanical brake;By increasing the electric current of magnetic powder cluth to realize the pressurization of vehicle, by keeping magnetic The electric current of powder clutch is to realize the pressure maintaining period of vehicle, by reducing the electric current of magnetic powder cluth to realize the decompression of vehicle Journey.

Claims (6)

1. a kind of electromechanical brake based on magnetic powder cluth, it is characterised in that: including motor (1), two reduction gear, Magnetic powder cluth, ballscrew shaft (10), ball (13), ball-screw nut (14), piston (15), braking clamp body (11), One friction plate (17), the second friction plate (18) and brake disc (19);Magnetic powder cluth is mainly by driving part (6) and slave unit (8) it is formed by connecting by magnetic powder (7), driving part (6) of the output shaft of motor (1) through two reduction gear and magnetic powder cluth Connection, the slave unit (8) and ballscrew shaft (10) of magnetic powder cluth are coaxially connected, ballscrew shaft (10) and piston (15) It is installed in braking clamp body (11), braking clamp body (11) is equipped with bore passages, and the bottom surface of braking clamp body (11) bore passages is provided with Central through hole, bore passages outside, which extends, to be stretched out and is bent to form pincers portion, and ballscrew shaft (10) inner end is set in braking clamp body (11) in the central through hole of bore passages bottom surface and stretch out braking clamp body (11) afterwards with the slave unit of magnetic powder cluth (8) even It connects, ballscrew shaft (10) outer end forms ball guide screw nat, ball through ball (13) and ball-screw nut (14) suit Feed screw nut (14) is fixedly connected by screw (12) with the inner end of piston (15), and piston (15) is sleeved on braking clamp body (11) It is moved in bore passages and along bore passages, piston (15) outer end is connected with the first friction plate (17);Two reduction gear includes Cone gear and large and small roller gear, bevel pinion (2) are connected to the output end of motor (1), big roller gear (5) connection To the driving part (6) of magnetic powder cluth, bevel pinion (2) and bevel gear wheel (3) intermeshing, bevel gear wheel (3) and roundlet Stud wheel (4) is fixedly and coaxially connected, small cylinder gear (4) and big roller gear (5) intermeshing.
2. electromechanical brake according to claim 1, it is characterised in that: the protruding shaft end of the ballscrew shaft (10) Portion is axially fixed in the central through hole outer end face of braking clamp body (11) by circlip (9), and circlip (9) is placed in braking clamp body (11) outside It holds and blocks ballscrew shaft (10), so that ballscrew shaft (10) can only be rotated and cannot be moved axially.
3. electromechanical brake according to claim 1, it is characterised in that: piston (15) outer end and braking clamp body (11) extend on the outside of bore passages and be equipped with brake disc (19) between the pincers portion stretched out, one of end face warp of brake disc (19) First friction plate (17) is connected with piston (15) outer end face, the second friction plate of other end (18) of brake disc (19) and braking The pincers portion inner sidewall of caliper (11) connects.
4. electromechanical brake according to claim 1, it is characterised in that: the cone gear and large and small cylinder Gear is integrated in same gear-box.
5. electromechanical brake according to claim 1, it is characterised in that: the motor (1) and magnetic powder cluth are equal It is connect with entire car controller.
6. electromechanical brake according to claim 1, it is characterised in that: the piston (15) is close through rectangular loop (16) Envelope is socketed in the bore passages of braking clamp body (11).
CN201821441867.0U 2018-09-04 2018-09-04 A kind of electromechanical brake based on magnetic powder cluth Active CN209053996U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821441867.0U CN209053996U (en) 2018-09-04 2018-09-04 A kind of electromechanical brake based on magnetic powder cluth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821441867.0U CN209053996U (en) 2018-09-04 2018-09-04 A kind of electromechanical brake based on magnetic powder cluth

Publications (1)

Publication Number Publication Date
CN209053996U true CN209053996U (en) 2019-07-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

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CN (1) CN209053996U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111221367A (en) * 2020-03-12 2020-06-02 合肥工业大学 Control method of multifunctional actuator combining motor and controllable clutch
CN111550507A (en) * 2020-05-14 2020-08-18 贵州航天林泉电机有限公司 Electromechanical actuator for unmanned aerial vehicle brake

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111221367A (en) * 2020-03-12 2020-06-02 合肥工业大学 Control method of multifunctional actuator combining motor and controllable clutch
CN111221367B (en) * 2020-03-12 2021-08-17 合肥工业大学 Control method of multifunctional actuator combining motor and controllable clutch
CN111550507A (en) * 2020-05-14 2020-08-18 贵州航天林泉电机有限公司 Electromechanical actuator for unmanned aerial vehicle brake

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