CN108945086A - A kind of electric boosting steering system - Google Patents
A kind of electric boosting steering system Download PDFInfo
- Publication number
- CN108945086A CN108945086A CN201710358736.XA CN201710358736A CN108945086A CN 108945086 A CN108945086 A CN 108945086A CN 201710358736 A CN201710358736 A CN 201710358736A CN 108945086 A CN108945086 A CN 108945086A
- Authority
- CN
- China
- Prior art keywords
- fixed plate
- pcb board
- sensor
- steering system
- fixedly connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
Abstract
A kind of electric boosting steering system, including upper housing, the fixed plate being fixedly connected with the upper housing, it is set in the space of the upper housing and fixed plate formation, and it is fixedly connected on the connector and pcb board of the fixed plate, wherein, the PCB is directly contacted with the fixed plate and is radiated by the fixed plate, it further include motor rotor, the motor stator being sheathed on outside the motor rotor, the motor field frame and rotation axis being fixedly connected with the motor stator further include electromagnetic sensor and AMR/GMR sensor.Controller and driver Integrated design are reduced product cost by the present invention, meanwhile, using double motor position sensor, effectively improve the safety guarantee of vehicle.
Description
Technical field
The present invention relates to wheel steering system more particularly to a kind of electric boosting steering systems for vehicle.
Background technique
Electric power steering (Electric Power Steering, abbreviation: EPS), refers to and provides auxiliary by motor
The power steering system of torque, electric boosting steering system are the developing direction of wheel steering system.The system is by electric boosted
Machine directly provides power steering, eliminates power steering oil pump, hose necessary to hydraulic power steering system, hydraulic oil, biography
It send band and loaded on the belt pulley on engine, not only saves energy, but also protect environment.In addition, electric power steering also has tune
The characteristics of whole simple, assembly is flexible and can provide power steering in several situations.Therefore, electric boosting steering system is made
For a kind of new steering technique, there is forward direction the hydraulic steering system of more than 50 years history to challenge.
The working principle of existing electric boosting steering system is, when steering wheel is turned to, is examined using torque sensor
Survey the steering and level of torque of steering wheel, and voltage signal be transported to electronic control unit, electronic control unit according to turn
Torque voltage signal, rotation direction and the speed signal etc. that square sensor detects are issued to motor controller and are instructed, by
The motor rotary shaft location information that motor position sensor provides keeps motor output correspondingly sized and the power steering in direction
Torque, to generate auxiliary power.When vehicle does not turn to, electronic control unit is not issued to motor controller and is instructed, electronic
Machine does not work.
Existing electric boosting steering system is usually made of controller, driver and actuator etc., wherein each component by
Different manufacturers manufacture respectively, and fit together, and often structure is complicated, with high costs.
And for electric boosting steering system, belong to vehicle safety part, general to require have redundancy, the effect of redundancy is
When a part failure, the part of redundancy can work on, to guarantee that the function of whole system is normal.But it is existing
Electric boosting steering system mostly uses greatly unit to set sensor setting, is unable to fully guarantee vehicle safety.
Summary of the invention
To solve the above problems, the present invention proposes a kind of electric servo steering system, the present invention is by controller and drive
Dynamic device Integrated design reduces product cost, meanwhile, using double motor position sensor, effectively improve the safety guarantee of vehicle.
Specifically, the present invention provides a kind of electric boosting steering system, including upper housing, is fixedly connected with the upper housing
Fixed plate, be set in the space that the upper housing and the fixed plate are formed, and be fixedly connected on the company of the fixed plate
Connect device and pcb board, wherein the PCB is directly contacted with the fixed plate and radiated by the fixed plate, further includes electricity
Motivation rotor, the motor stator being sheathed on outside the motor rotor are fixedly connected electronic with the motor stator
Casing body and rotation axis, further include angular-rate sensor and AMR/GMR sensor, and the angular-rate sensor includes sensing
Device rotor, the sensor stator being sheathed on outside the rotor sensor, the AMR/GMR sensor, including AMR/GMR magnet
With corresponding AMR/GMR resistive element, the rotor sensor and the motor rotor are sheathed in the rotation axis,
It is first end that the rotation axis, which is equipped with rotor sensor one end, is connect with the rotor fixed plate, the rotation axis installation
Having motor rotor one end is second end, is connect with the motor field frame, and the sensor stator and pcb board electricity
Connection, the motor stator are electrically connected with the pcb board, and the AMR/GMR magnet is set in rotation axis, the AMR/
GMR resistive element is set on the pcb board, and the pcb board provides alternating current to the motor stator, drives the electricity
The rotation of motivation rotor to wheel steering system output kinetic energy, drives Vehicular turn to drive the rotation axis to rotate, and described turn
Moving axis drives the rotor sensor rotation, and the sensor stator incudes the rotor sensor and rotates to pcb board transmission one
Electric signal, meanwhile, the AMR/GMR resistive element senses that the AMR/GMR magnet is rotated with the rotation axis, also to PCB
Plate transmits an electric signal, and in place whether wheel steering system can determine whether Vehicular turn according to the electric signal.
Preferably, the invention also includes first bearing and second bearing, the first bearing is fixed on the fixed plate, uses
In the first end for being fixedly connected with the rotation axis, the second bearing is fixed on the motor field frame, for being fixedly connected
State the second end of rotation axis.
Preferably, the pin of the sensor stator is inserted into the pcb board, realization and institute by way of Press-fit
The electrical connection that pcb board connects is stated, the sensor stator is fixedly connected on described solid by way of fastener, buckle or gluing
Fixed board.
Preferably, the pcb board and the connector are fixedly connected by fastener with the fixed plate.
Preferably, the first mounting hole is provided on the pcb board, the corresponding position in the fixed plate is provided with boss,
The second mounting hole is provided on the boss, the fastener passes through first mounting hole and is fixedly connected on second installation
Kong Zhong realizes being fixedly connected for the pcb board and the fixed plate.
Preferably, heat-conducting cream is filled between the fixed plate and the pcb board, for accelerating fixed plate and the PCB
Heat transfer between plate.
Preferably, the corresponding position setting on the pcb board at least provided with 3 the first mounting holes, in the fixed plate
There are at least three boss and the second mounting hole.
Preferably, the upper housing is fixedly connected on the fixed plate by snap.
Preferably, the center of the motor field frame bottom surface is provided with through-hole, and the rotation axis is worn by the through-hole
Out, it is connect with the steering box spline of vehicle steering device.
Preferably, it is provided with mounting hole on the motor field frame, for solid with the steering box of vehicle steering device
Fixed connection.
Compared with prior art, the technical advantages of the present invention are that:
1) discrete in the prior art controller and driver are integrated into a product by the present invention, are greatly reduced electronic
The manufacturing cost of servo steering system；
2) fixed plate in the present invention is in carrying pcb board and connector, fixed rotor, meanwhile, it may act as the heat dissipation of pcb board
Device improves the heat dissipation effect of pcb board, extends the service life of electric boosting steering system；
3) present invention is provided with electromagnetic sensor and AMR/GMR sensor simultaneously, effectively improves the safety guarantee of vehicle.
Detailed description of the invention
Fig. 1 is the explosive view of an electric boosting steering system for meeting a preferred embodiment of the present invention；
Fig. 2 is the sectional side elevation of electric boosting steering system in Fig. 1；
Fig. 3 is the top view of electric boosting steering system in Fig. 1；
Fig. 4 is the signal in Fig. 1 in electric boosting steering system before sensor pin press-fit link indentation pcb board
Figure；
Fig. 5 is the signal in Fig. 1 in electric boosting steering system after sensor pin press-fit link indentation pcb board
Figure；
Fig. 6 is the pcb board of electric boosting steering system and the connection schematic diagram of fixed plate in Fig. 1；
Fig. 7 is the heat dissipation effect figure of electric boosting steering system in Fig. 1.
Appended drawing reference:
10- upper housing, 11- fixed plate, 110- boss, the second mounting hole of 111-, 12- connector, 13-PCB plate, 130-
One mounting hole,
20- motor rotor, 21- motor stator, 22- motor field frame,
30- rotation axis, 31- first end, 32- second end,
40- angular-rate sensor, 41- rotor sensor, 42- sensor stator, 420- pin
50-AMR/GMR sensor, 51-AMR/GMR magnet, 52-AMR/GMR resistive element,
60- first bearing, 61- second bearing,
Specific embodiment
With reference to the accompanying drawing and specific embodiment, advantage of the invention is elaborated.
Refering to fig. 1, the structure chart for the electric boosting steering system for meeting one embodiment of the present invention for one.From figure
As can be seen that electric boosting steering system provided by the present embodiment specifically includes, upper housing 10 is fixed with the upper housing 10
The fixed plate 11 of connection is set in the space of the upper housing 10 and the formation of the fixed plate 11, and is fixedly connected on described
The connector 12 and pcb board 13 of fixed plate 11.In view of above-mentioned setting, refering to Fig. 4, meet a preferred implementation of the invention for one
The heat dissipation effect figure of the electric boosting steering system of example, it can be seen from the figure that the pcb board 13 and the fixed plate 11 are directly
Contact, the pcb board 13 can be radiated by the fixed plate 11, improved the radiating efficiency of pcb board 13, greatly improved PCB
The service life of plate 13.
Electric boosting steering system in the present embodiment further includes motor rotor 20, is sheathed on the motor rotor 20
External motor stator 21, the motor field frame 22 being fixedly connected with the motor stator 21 and rotation axis 30；Also wrap
Include angular-rate sensor 40 and AMR/GMR sensor 50, the electromagnetic sensor include rotor sensor 41, be sheathed on it is described
Sensor stator 42 outside rotor sensor 41, and the AMR/GMR sensor 50, including AMR/GMR magnet 51 and and its
Corresponding AMR/GMR resistive element 52.
Fig. 2 is further regarded to, is the sectional side elevation of the electric boosting steering system of the present embodiment.It can be seen from the figure that
When the installation of this electric boosting steering system, the rotor sensor 41 and the motor rotor 20 are sheathed on the rotation axis
On 30.Wherein, it is first end 31 that the rotation axis 30, which is equipped with 41 one end of rotor sensor, is connect with the fixed plate 11；
It is second end 32 that the rotation axis 30, which is equipped with 20 one end of motor rotor, is connect with the motor field frame 22.And it is described
Sensor stator 42 is electrically connected with the pcb board 13, and the motor stator 21 is electrically connected with the pcb board 13.The AMR/
GMR magnet 51 is set in rotation axis 30, and the AMR/GMR resistive element 52 is set on the pcb board 13.
To, when in the present embodiment electric boosting steering system operation when namely driver operate steering wheel for vehicle into
When row turns to: the pcb board 13 receives the turn signal that wheel steering system is sent, according to the turn signal, the pcb board 13
Alternating current is provided to the motor stator 21, drives the motor rotor 20 to rotate, to drive 30 turns of the rotation axis
It is dynamic, to wheel steering system output kinetic energy, drive Vehicular turn；The rotation of rotation axis 30 is to drive the rotor sensor
41 rotations, the sensor stator 42 incude the rotor sensor 41 and rotate to one electric signal of transmission of pcb board 14, meanwhile, institute
It states AMR/GMR resistive element 52 and senses that the AMR/GMR magnet 51 is rotated with the rotation axis 30, also transmitted to pcb board 13
The signal from two kinds of sensors is transmitted to other dresses of wheel steering system eventually by connector 12 by one electric signal
It sets, in place whether wheel steering system can determine whether Vehicular turn according to the electric signal.It is same in the present embodiment in view of above-mentioned setting
When setting two kinds collaborative work sensors, prevent when a sensor failure, the sensor of redundancy can work on, from
And effectively guarantee the normal operation of whole system, support vehicles safety.
And preferably, find out from figure 2, the invention also includes first bearing 60 and second bearing 61, the first axle
It holds 61 and is fixed on the fixed plate 11, for being fixedly connected with the first end 31 of the rotation axis 30, the second bearing 61 is fixed
In the motor field frame 22, for being fixedly connected with the second end 32 of the rotation axis 30.The bearing 60,61 can support respectively
The rotation of rotor sensor 41 and motor rotor 20.
Refering to Fig. 3, it is respectively the top view of the electric boosting steering system of the present embodiment.It can be seen from the figure that it is preferred that
The pin 420 on ground, the sensor fixed 42 is inserted into the pcb board 13 by way of Press-fit, realizes and the pcb board
The electrical connection connect.Using the non-welding electric subassembly technique of Press-fit, it can be ensured that pin 420 closely connects with pcb board 13
It connects, ensured pin 420 and pcb board 13 is electrically connected effect.Meanwhile the sensor stator 42 by fastener, buckle or
The form of person's gluing is fixedly connected on the fixed plate 11.Fig. 4 and Fig. 5 specifically are seen, is respectively the electronic of the present embodiment
Schematic diagram before servo steering system sensor pin press-fit link indentation pcb board and after indentation.In the present embodiment, adopt
With Press-fit technique, it can be achieved that simple and quick installation, reduces damage of the welding procedure to pcb board and stator, reduce simultaneously
Assembly time and cost.
Preferably, the pcb board 13 and the connector 12 are fixedly connected by fastener with the fixed plate 11.It avoids
In vehicle operation, pcb board is because of the transmissions such as concussion damage.
Further regard to Fig. 6, it is preferable that the first mounting hole 130 is provided on the pcb board 13, in the fixed plate 11
Corresponding position be provided with boss 110, be provided with the second mounting hole 111 on the boss, the fastener passes through described first
Mounting hole 130 is fixedly connected in second mounting hole 111, realizes that the pcb board 13 connects with the fixed of the fixed plate 11
It connects.In view of above-mentioned design, a heat dissipation gap can be reserved in pcb board 13 and fixed plate 11, for filling Heat Conduction Material, to mention
The radiating efficiency of high pcb board.It is further preferred that heat-conducting cream can be filled between the fixed plate 11 and the pcb board 13 as scattered
Hot material can substantially speed up the heat transfer between fixed plate and the pcb board 13, and the heat generated in pcb board operational process can
It is quickly spread to outside by fixed plate and thermal grease, specific heat dissipation effect can be found in attached drawing 7, to effectively improve pcb board
Service life.
Preferably, the correspondence position on the pcb board 13 at least provided with 3 the first mounting holes 130, in the fixed plate 11
It installs and is equipped at least three boss 110 and the second mounting hole 111.Above-mentioned setting can the fastening of effective guarantee pcb board and fixed plate connect
It connects, prevents pcb board disengaging, damage etc. in vehicle operation.
Preferably, the upper housing 10 is fixedly connected on the fixed plate 11 by snap.The mounting means can mention
The convenience of height installation, and installation space is saved to a certain extent.
Preferably, the center of 22 bottom surface of motor field frame is provided with through-hole, and the rotation axis 30 is by described logical
Hole is pierced by, and is connect with the steering box spline of vehicle steering device.Further, in this embodiment rotation axis 30 lower end
It is provided with vertical tooth, to, it can be achieved that connect with steering box spline.
Preferably, referring to Fig. 1, it is provided with mounting hole on the motor field frame 22, for turning with vehicle steering device
It is fixedly connected to gear-box.
In conclusion discrete in the prior art controller and driver are integrated into a product by the present invention, drop significantly
The low manufacturing cost of electric boosting steering system；Fixed plate in the present invention is in carrying pcb board and connector, fixed rotor,
Meanwhile may act as the radiator of pcb board, the heat dissipation effect of pcb board is improved, extend electric boosting steering system uses the longevity
Life；The present invention is provided with angular-rate sensor and AMR/GMR sensor simultaneously, effectively improves the safety guarantee of vehicle.
It should be noted that the embodiment of the present invention has preferable implementation, and not the present invention is made any type of
Limitation, any one skilled in the art change or are modified to possibly also with the technology contents of the disclosure above equivalent effective
Embodiment, as long as without departing from the content of technical solution of the present invention, it is to the above embodiments according to the technical essence of the invention
Any modification or equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of electric boosting steering system, including
Upper housing,
The fixed plate being fixedly connected with the upper housing,
Be set in the space that the upper housing and the fixed plate are formed, and be fixedly connected on the fixed plate connector and
Pcb board,
Wherein, the PCB is directly contacted with the fixed plate and is radiated by the fixed plate,
It further include motor rotor,
The motor stator being sheathed on outside the motor rotor,
The motor field frame being fixedly connected with the motor stator, and
Rotation axis,
It further include angular-rate sensor and AMR/GMR sensor,
The sensor stator that the angular-rate sensor includes rotor sensor, is sheathed on outside the rotor sensor,
The AMR/GMR sensor, including AMR/GMR magnet and corresponding AMR/GMR resistive element,
It is characterized in that,
The rotor sensor and the motor rotor are sheathed in the rotation axis, and the rotation axis is equipped with sensor and turns
Sub- one end is first end, is connect with the fixed plate, and it is second end that the rotation axis, which is equipped with motor rotor one end, with
The motor field frame connection, and the sensor stator is electrically connected with the pcb board, the motor stator and the PCB
Plate electrical connection, the AMR/GMR magnet are set in rotation axis, and the AMR/GMR resistive element is set on the pcb board,
The pcb board provides alternating current to the motor stator, and the motor rotor is driven to rotate, to drive described turn
Moving axis rotation drives Vehicular turn to wheel steering system output kinetic energy, and the rotation axis drives the rotor sensor to turn
Dynamic, the sensor stator incudes the rotor sensor and rotates to pcb board one electric signal of transmission, meanwhile, the AMR/GMR electricity
Resistance element senses that the AMR/GMR magnet is rotated with the rotation axis, also transmits an electric signal, vehicle steering system to pcb board
In place whether system can determine whether Vehicular turn according to the electric signal.
2. electric booster system as described in claim 1, which is characterized in that
It further include first bearing and second bearing, the first bearing is fixed on the fixed plate, for being fixedly connected with described turn
The first end of moving axis, the second bearing are fixed on the motor field frame, for being fixedly connected with the second end of the rotation axis.
3. electric boosting steering system as described in claim 1, which is characterized in that
The pin of the sensor stator is inserted into the pcb board by way of Press-fit, what realization connect with the pcb board
Electrical connection, the sensor stator are fixedly connected on the fixed plate by way of fastener, buckle or gluing.
4. electric boosting steering system as described in claim 1, which is characterized in that
The pcb board and the connector are fixedly connected by fastener with the fixed plate.
5. electric boosting steering system as described in claim 1, which is characterized in that
The first mounting hole is provided on the pcb board, the corresponding position in the fixed plate is provided with boss, sets on the boss
It is equipped with the second mounting hole, the fastener passes through first mounting hole and is fixedly connected in second mounting hole, realizes institute
State being fixedly connected for pcb board and the fixed plate.
6. electric boosting steering system as claimed in claim 5, which is characterized in that
Heat-conducting cream is filled between the fixed plate and the pcb board, for accelerating the heat between fixed plate and the pcb board to pass
It leads.
7. electric boosting steering system as claimed in claim 5, which is characterized in that
At least provided with 3 the first mounting holes on the pcb board, it is convex that the corresponding position in the fixed plate is provided at least three
Platform and the second mounting hole.
8. electric boosting steering system as described in claim 1, which is characterized in that
The upper housing is fixedly connected on the fixed plate by snap.
9. electric boosting steering system as described in claim 1, which is characterized in that
The center of the motor field frame bottom surface is provided with through-hole, and the rotation axis is pierced by by the through-hole, turns with vehicle
It is connected to the steering box spline of device.
10. electric boosting steering system as described in claim 1, which is characterized in that
It is provided with mounting hole on the motor field frame, is fixedly connected for the steering box with vehicle steering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710358736.XA CN108945086A (en) | 2017-05-19 | 2017-05-19 | A kind of electric boosting steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710358736.XA CN108945086A (en) | 2017-05-19 | 2017-05-19 | A kind of electric boosting steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108945086A true CN108945086A (en) | 2018-12-07 |
Family
ID=64462232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710358736.XA Pending CN108945086A (en) | 2017-05-19 | 2017-05-19 | A kind of electric boosting steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108945086A (en) |
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| CN103282745A (en) * | 2010-12-28 | 2013-09-04 | 日立汽车系统株式会社 | Magnetic field angle measurement apparatus, rotation angle measurement apparatus, and rotation machine, system, vehicle, and vehicle drive apparatus each using same rotation angle measurement apparatus |
| CN105313951A (en) * | 2014-07-31 | 2016-02-10 | 株式会社电装 | Drive device and electric power steering device including the drive device |
| CN106208578A (en) * | 2016-08-04 | 2016-12-07 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of permasyn morot |
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2017
- 2017-05-19 CN CN201710358736.XA patent/CN108945086A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482393A (en) * | 2008-01-11 | 2009-07-15 | 日本电产株式会社 | Resolver, motor, power steering apparatus and method of manufacturing the resolver |
| US20110001441A1 (en) * | 2009-07-06 | 2011-01-06 | Jtekt Corporation | Motor Control Unit and Vehicle Steering Apparatus |
| EP2371673A2 (en) * | 2010-03-31 | 2011-10-05 | Mitsubishi Electric Corporation | Electric driving apparatus |
| CN102248963A (en) * | 2010-05-21 | 2011-11-23 | 株式会社电装 | Drive apparatus |
| CN103282745A (en) * | 2010-12-28 | 2013-09-04 | 日立汽车系统株式会社 | Magnetic field angle measurement apparatus, rotation angle measurement apparatus, and rotation machine, system, vehicle, and vehicle drive apparatus each using same rotation angle measurement apparatus |
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| CN106208578A (en) * | 2016-08-04 | 2016-12-07 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of permasyn morot |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |
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| RJ01 | Rejection of invention patent application after publication |