CN107878432A - A kind of transmission mechanism applied to electric controlled brake system - Google Patents
A kind of transmission mechanism applied to electric controlled brake system Download PDFInfo
- Publication number
- CN107878432A CN107878432A CN201711210629.9A CN201711210629A CN107878432A CN 107878432 A CN107878432 A CN 107878432A CN 201711210629 A CN201711210629 A CN 201711210629A CN 107878432 A CN107878432 A CN 107878432A
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- Prior art keywords
- levels
- brake system
- planetary gear
- motor
- transmission mechanism
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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
- B60T13/02—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 mechanical assistance or drive
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of transmission mechanism applied to electric controlled brake system, including motor and hydraulic brake system, planetary gear set is set on the axle of described motor；The output shaft of described planetary gear set is provided with roller gear (10), and described roller gear (10) engages with rack plunger (11)；Described rack plunger (11) is connected with the piston (15) of described hydraulic brake system.Using above-mentioned technical proposal, the characteristics of using Planetary Gear Transmission so that the volume of the transmission mechanism of electric controlled brake system reduces, gearratio is bigger, weight is lighter, compact-sized；Simplify electric machine structure；It is big to transmit power, transmission efficiency and then raising bearing capacity；Stable movement, shock resistance and vibration ability are stronger；Rotary motion is changed into by linear motion by rack pinion so that brake operating can be carried out quickly, ensure that the safety of vehicle and passenger.
Description
Technical field
The invention belongs to the technical field of motor vehicle braking systems, it is related to electric controlled brake system.More specifically, the present invention relates to
And the rotary motion of motor is converted to linear motion by a kind of transmission mechanism applied to the electric controlled brake system, the transmission mechanism
And then realize braking.
Background technology
For conventional fuel oil car after human pilot steps on brake pedal, pedal can promote vacuum booster pump, then by vacuum servo
Pump promotes brake master cylinder to produce brake hydraulic, and control braking clamp is braked.But because vacuum is carried by engine power
For for new energy and hybrid electric vehicle, without engine, or hybrid electric vehicle is under electric-only mode, very
Empty boost pump can not work.Therefore the braking mechanism of vacuum booster pump is not needed to arise at the historic moment, here it is electric control braking system
System, and electric controlled brake system and various active and passive security systems cooperations are also very natural.
Conventional hydraulic is braked compared with electric control braking, problems be present：
1st, fluid pressure line it is tediously long and cause perform speed it is slow, braking retardation；
2nd, complicated, quality is big；
3rd, there is the presence of brake fluid, be not easy to safeguard；
4th, can not be well matched with active safety system；
5th, there is resilience vibration under abs mode, there is larger noise etc..
Prior art is to solve the problems, such as Conventional braking systems, it is proposed that following technical scheme：
Patent document number is US20170137005A1 patent document, there is provided a kind of fluid pressure type line control brake system, is led to
Crossing planetary gear train drives ball-screw to carry out clamping piston, and its power exported makes hydraulic pressure feeding mechanism produce brake force；
Patent document number is WO2017042546A1 patent document, there is provided a kind of fluid pressure type line control brake system, is led to
Cross linear actuator, the power of ball-screw output makes hydraulic pressure feeding mechanism produce brake force；
Patent document number is DF10255198A1 patent document, there is provided a kind of fluid pressure type line control brake system, is passed through
Ball-screw, the power of pressue device output make hydraulic pressure feeding mechanism produce brake force.
But the existing various fluid pressure type line control brake systems including above-mentioned document, its shortcoming are in arrangement：It is defeated
The linear movement direction gone out is consistent with motor direction of principal axis, makes longer dimension of the system along motor direction of principal axis, the sky for taking and wasting
Between it is excessive；Need to detect rotor-position during motor control；Because the both ends of motor in above scheme can not cloth set
Detection sensor is put, causes system excessively complicated.
The content of the invention
The present invention provides a kind of transmission mechanism applied to electric controlled brake system, and the purpose is to improve transmission efficiency, make biography
The structure of motivation structure is compacter.
To achieve these goals, the technical scheme taken of the present invention is：
The transmission mechanism applied to electric controlled brake system of the present invention, including motor and hydraulic brake system, described electricity
Planetary gear set is set on the axle of machine；The output shaft of described planetary gear set is provided with roller gear, described cylinder
Wheel and rack plunger engages；Described rack plunger is connected with the piston of described hydraulic brake system.
The axis of described Cylinder Gear wheel and rack plunger is mutually perpendicular to.
Described planetary gear set is the double reduction planetary gear mechanism that is coaxially distributed, i.e. two-stage centre wheel
Axis overlaps.
Described planetary gear set include I levels centre wheel, I levels planetary gear, gear ring, I levels planet carrier, II levels centre wheel,
II levels planetary gear, II level planet carriers；Described gear ring is fixedly connected with electric machine casing；Described I levels centre wheel and the axle of motor
Connect as one；Described I levels planetary gear engages with I levels centre wheel and gear ring respectively；Described I level planetary gears are sleeved on I levels
On the I level planet wheel spindles of planet carrier；Described II level centre wheels are fixedly connected on I level planet carriers；Described II level planetary gears
Engaged respectively with II levels centre wheel and gear ring；Described II level planetary gears are sleeved on the II level planet wheel spindles of II level planet carriers；
Described roller gear is fixedly connected on II level planet carriers.
The end set Magnetic sensing component that the shaft extension of described motor goes out, described Magnetic sensing component and vehicle ECU
Connection.
Described piston forms being slidably matched for sealing by rubber ring and valve body.
Spring is set in the hydraulic cavities of described valve body, and described spring is compression spring, and its one end withstands piston.
Described motor includes motor stator, rotor, and described motor stator is fixed in electric machine casing；Described
The axle of motor is arranged on electric machine casing by motor bearings.
The present invention uses above-mentioned technical proposal, the characteristics of using Planetary Gear Transmission so that the transmission of electric controlled brake system
The volume of mechanism reduces, gearratio is bigger, weight is lighter, compact-sized；Simplify electric machine structure；It is big to transmit power, transmission efficiency
High and then raising bearing capacity；Stable movement, shock resistance and vibration ability are stronger；By rack pinion by rotary motion
It is changed into linear motion so that brake operating can be carried out quickly, ensure that the safety of vehicle and passenger.
Brief description of the drawings
Content shown in accompanying drawing and figure acceptance of the bid are denoted as being briefly described as follows：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of A-A section views in Fig. 1.
In figure mark for：
1st, motor stator, 2, rotor, 3, motor bearings, 4, electric machine casing, 5, gear ring, 6, I level planetary gears, 7, I levels
Planet carrier, 8, II level planetary gears, 9, II level planet carriers, 10, roller gear (with II levels planet carrier one), 11, rack plunger,
12nd, valve body, 13, II level centre wheels, 14, I level centre wheels, 15, piston, 16, rubber ring, 17, spring, 18, magnetic element, 19,
ECU.
Embodiment
Below against accompanying drawing, by the description to embodiment, embodiment of the invention is made further details of
Illustrate, to help those skilled in the art to have more complete, accurate and deep reason to inventive concept of the invention, technical scheme
Solution.
Structure of the invention as shown in Figure 1 and Figure 2, is a kind of transmission mechanism applied to electric controlled brake system, including motor
And hydraulic brake system.
The defects of in order to overcome prior art, realize the overall compact hair of structure for improving transmission efficiency, making transmission mechanism
Improving eyesight, the technical scheme that the present invention takes is：
As shown in Figure 1 and Figure 2, the transmission mechanism applied to electric controlled brake system of the invention, set on the axle of described motor
Put planetary gear set；The output shaft of described planetary gear set is provided with roller gear 10, described roller gear 10 with
Rack plunger 11 engages；Described rack plunger 11 is connected with the piston 15 of described hydraulic brake system.
The transmission mechanism of above-mentioned electric controlled brake system substantially comprises direct current generator, planetary gear mechanism, gear
Rack gear three parts.The characteristics of present invention utilizes Planetary Gear Transmission, such as small volume, in light weight, compact-sized, transmission
Power is big, bearing capacity is high, transmission efficiency, gearratio are big, stable movement, shock resistance and vibration ability it is strong etc.；Also use
The characteristics of rotary motion can be changed into linear motion by rack pinion, realize the purpose of fast braking.
Motor is fixed on one as output power unit, importation and the motor shaft of described planetary gear mechanism
Rise, motor slow down increasing by planetary gear mechanism and turned round, and is turned rotary motion by rack pinion component
Linear motion is changed to, and then produces hydraulic pressure or brake force, produces braking effect.Motor shaft is multi-diameter shaft, and runs through planetary gear
Gear unit and rack-and-pinion unit.
Above-mentioned technical proposal ensure that electric controlled brake system substitutes vacuum booster in hydraulic braking system for automobile, in electricity
On dynamic or hybrid vehicle, service brake can be achieved without vacuum source.
The invention has the advantages that：
1st, the energy is saved：The present invention substitutes the vacuum booster of prior art using planetary gear mechanism, so not
Engine is needed to carry out power-assisted to provide vacuum, it is possible to so that new-energy automobile can also have good auxiliary boost device to help
Operator brake brakes；
2nd, it is big to transmit power：The present invention transmits torque using two-stage planet system, and planetary gear ties up to gear biography
There is higher transmission power capability in dynamic, power transmission can be met；
3rd, gearratio is big：Two-stage planetary gear system can obtain sufficiently large gearratio, and gearratio is bigger, with regard to that can be got over
Big moment of torsion is output to hydraulic pressure feeding mechanism to provide enough power；
4th, transmission efficiency：Planetary gear system can be rapidly by the rotary motion output of motor transmission and in rack-and-pinion
Linear motion is converted under device so that brake operating can be carried out quickly, ensure that the safety of vehicle and passenger；
5th, simplied system structure：Motor internal detects the magnetic by motor shaft end without set location sensor again, position
Property element and ECU in position detection chip complete, simplify electric machine structure, make system reliability higher.
The axis of described roller gear 10 and rack plunger 11 is mutually perpendicular to.It is in 90 ° vertical with motor shaft to export rack
Directly.
The composition of double reduction planetary gear mechanism：
Described planetary gear set is the double reduction planetary gear mechanism that is coaxially distributed, i.e. two-stage centre wheel
Axis overlaps.The planetary gear mechanism is made up of center sun gear, gear ring, planet carrier and planetary gear, output shaft
Transmission mechanism, the little gear of output par, c and rack and pinion drive mechanism in described planetary gear mechanism are fixed on one
Rise；Planet carrier, the sun gear of planetary gear mechanism are parallel with motor shaft.
Motor shaft is connected to the sun gear of primary planet pinion, and the revolving force of motor is delivered to one-level sun gear by motor shaft
On, one-level sun gear engages with primary planet wheel, is transferred force to by primary planet wheel on primary planet carrier, primary planet carrier
On be connected to secondary solar gear, secondary solar gear transmits the force to secondary planet frame by secondary planet wheel, secondary planet frame with
The gear connection of rack pinion unit.
It is specific as shown in Figure 1：Described planetary gear set includes I levels centre wheel 14, I levels planetary gear 6, gear ring 5, I levels
Planet carrier 7, II levels centre wheel 13, II levels planetary gear 8, II levels planet carrier 9；Described gear ring 5 is fixedly connected with electric machine casing 4.
The axis connection of described I levels centre wheel 14 and motor is integrated；Described I levels planetary gear 6 respectively with I level centre wheels
14 and gear ring 5 engage；Described I levels planetary gear 6 is sleeved on the I level planet wheel spindles of I levels planet carrier 7；Described II levels center
Wheel 13 is fixedly connected on I levels planet carrier 7；Described II levels planetary gear 8 engages with II levels centre wheel 13 and gear ring 5 respectively；Institute
The II levels planetary gear 8 stated is sleeved on the II level planet wheel spindles of II levels planet carrier 9；Described roller gear 10 is fixedly connected on II
On level planet carrier 9.
Rotor 2 drives primary centre sun gear 13 by motor shaft, and rotary motion is output into first order planetary gear
System, gear ring is relative to motor remains stationary；Primary centre sun gear 13 transmits motion to primary planet by primary planet wheel 6
On frame 7, primary planet carrier 7 is connected to secondary center sun gear 14, and motion is delivered to second level planetary gear train, and gear ring is relative to electricity
Machine remains stationary；Secondary center sun gear 14 is transmitted motion on secondary planet frame 9 by secondary planet wheel 8.
The composition of pinion and rack：
Rotary motion is changed into linear motion by the present invention by rack pinion so that brake operating can quickly enter
OK, it ensure that the safety of vehicle and passenger.The pinion and rack is the conversion being made up of output shaft, gear, rack
Mechanism.Together with the gear of rack and pinion drive mechanism is co-axially mounted with motor shaft.Pinion and rack transports the rotation of gear
Turn is changed to the linear motion of rack.Hydraulic pressure is produced by the piston being connected with rack, and then produces brake force.
It is specific as shown in Fig. 2 secondary planet frame 9 is connected to outer gear rack mechanism, so as to by the rotary motion of motor
The linear motion of rack 11 is converted to, final linear motion is delivered on hydraulic pressure feeding mechanism, attainment brake hydraulic pressure.
The end set Magnetic sensing component 18 that the shaft extension of described motor goes out, described Magnetic sensing component 18 and vehicle
ECU connections.The shaft end of motor shaft is connected to the magnetic element of motor rotor position detection.The reality of motor is obtained during for controlling
When position.
Therefore, motor internal is without position detecting device.By Magnetic sensing component 18 and motor axis connection, and with rotor
2 rotation and rotate.The plane of ECU 19 is vertical with motor shaft, and has magnetic detection chip.By detecting magnetic element
18 changes of magnetic field and obtain motor shaft rotation position.
Described piston 15 forms being slidably matched for sealing by rubber ring 16 and valve body 12.As shown in Fig. 2 in order to increase
Sealing effectiveness, rubber ring 16 is using the two pieces being coaxially distributed.
Spring 17 is set in the hydraulic cavities of described valve body 12, and described spring 17 is compression spring, and its one end is withstood
Piston 15.Spring 17 realizes the reset of piston 15, that is, releases braking.
The structure of motor as shown in Figure 1：Described motor includes motor stator 1, rotor 2, and described motor is determined
Son 1 is fixed in electric machine casing 4；The axle of described motor is arranged on electric machine casing 4 by motor bearings 3.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or without changing
Enter and the design of the present invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.
Claims (8)
1. a kind of transmission mechanism applied to electric controlled brake system, including motor and hydraulic brake system, it is characterised in that：It is described
Motor axle on planetary gear set is set；The output shaft of described planetary gear set is provided with roller gear (10), institute
The roller gear (10) stated engages with rack plunger (11)；The work of described rack plunger (11) Yu described hydraulic brake system
Fill in (15) connection.
2. according to the transmission mechanism applied to electric controlled brake system described in claim 1, it is characterised in that：Described Cylinder Gear
Wheel (10) and the axis of rack plunger (11) are mutually perpendicular to.
3. according to the transmission mechanism applied to electric controlled brake system described in claim 1, it is characterised in that：Described planet tooth
Wheel assembly is the double reduction planetary gear mechanism being coaxially distributed, i.e. the axis of two-stage centre wheel overlaps.
4. according to the transmission mechanism applied to electric controlled brake system described in claim 3, it is characterised in that：Described planet tooth
Wheel assembly includes I levels centre wheel (14), I levels planetary gear (6), gear ring (5), I levels planet carrier (7), II levels centre wheel (13), II levels
Planetary gear (8), II levels planet carrier (9)；Described gear ring (5) is fixedly connected with electric machine casing (4)；Described I level centre wheels
(14) axis connection with motor is integrated；Described I levels planetary gear (6) engages with I levels centre wheel (14) and gear ring (5) respectively；
Described I levels planetary gear (6) is sleeved on the I level planet wheel spindles of I levels planet carrier (7)；Described II levels centre wheel (13) is fixed
It is connected on I levels planet carrier (7)；Described II levels planetary gear (8) engages with II levels centre wheel (13) and gear ring (5) respectively；Institute
The II levels planetary gear (8) stated is sleeved on the II level planet wheel spindles of II levels planet carrier (9)；Described roller gear (10) is fixed to be connected
It is connected on II levels planet carrier (9).
5. according to the transmission mechanism applied to electric controlled brake system described in claim 1, it is characterised in that：Described motor
The end set Magnetic sensing component (18) that shaft extension goes out, described Magnetic sensing component (18) are connected with vehicle ECU.
6. according to the transmission mechanism applied to electric controlled brake system described in claim 1, it is characterised in that：Described piston
(15) being slidably matched for sealing is formed by rubber ring (16) and valve body (12).
7. according to the transmission mechanism applied to electric controlled brake system described in claim 6, it is characterised in that：In described valve body
(12) spring (17) is set in hydraulic cavities, and described spring (17) is compression spring, and its one end withstands piston (15).
8. according to the transmission mechanism applied to electric controlled brake system described in claim 1, it is characterised in that：Described motor bag
Motor stator (1), rotor (2) are included, described motor stator (1) is fixed in electric machine casing (4)；The axle of described motor
It is arranged on by motor bearings (3) on electric machine casing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210629.9A CN107878432A (en) | 2017-11-28 | 2017-11-28 | A kind of transmission mechanism applied to electric controlled brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210629.9A CN107878432A (en) | 2017-11-28 | 2017-11-28 | A kind of transmission mechanism applied to electric controlled brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107878432A true CN107878432A (en) | 2018-04-06 |
Family
ID=61775595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711210629.9A Pending CN107878432A (en) | 2017-11-28 | 2017-11-28 | A kind of transmission mechanism applied to electric controlled brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107878432A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050107A (en) * | 2009-10-30 | 2011-05-11 | 日立汽车系统株式会社 | Electric power assisting device |
| CN207875608U (en) * | 2017-11-28 | 2018-09-18 | 芜湖伯特利汽车安全系统股份有限公司 | A kind of transmission mechanism applied to electric controlled brake system |
-
2017
- 2017-11-28 CN CN201711210629.9A patent/CN107878432A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050107A (en) * | 2009-10-30 | 2011-05-11 | 日立汽车系统株式会社 | Electric power assisting device |
| CN207875608U (en) * | 2017-11-28 | 2018-09-18 | 芜湖伯特利汽车安全系统股份有限公司 | A kind of transmission mechanism applied to electric controlled brake system |
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