CN206520647U - Electric automobile electric power-assisted steering apparatus - Google Patents
Electric automobile electric power-assisted steering apparatus Download PDFInfo
- Publication number
- CN206520647U CN206520647U CN201720246226.9U CN201720246226U CN206520647U CN 206520647 U CN206520647 U CN 206520647U CN 201720246226 U CN201720246226 U CN 201720246226U CN 206520647 U CN206520647 U CN 206520647U
- Authority
- CN
- China
- Prior art keywords
- turning
- ball nut
- bar
- belt wheel
- electric power
- 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.)
- Expired - Fee Related
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- Power Steering Mechanism (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The utility model discloses a kind of electric automobile electric power-assisted steering apparatus, including：Housing；Input shaft, it is connected with steering wheel, and the input shaft lower end is provided with gear；Torque sensor is connected with the input shaft；Turning-bar, it is arranged in housing, and rack will be had by being set on the turning-bar, and the rack is engaged with the gear, so that turning-bar is moved left and right in housing；The left and right ends of the turning-bar connect left steering bulb and right turn bulb respectively；Leading screw is additionally provided with the turning-bar；Ball nut, it is set in, and leading screw is outer to be coordinated with the leading screw；The ball nut two ends are by bearings on housing；Motor, is connected by transmission device with the ball nut, to drive the ball nut to be rotated around own axes.
Description
Technical field
The utility model belongs to automotive steering structure technical field, more particularly to a kind of electric automobile electric power steering dress
Put.
Background technology
Electric power steering (Electric Power Steering, abbreviation EPS) system is after hydraulic power-assist steering system
A kind of new type power steering occurred afterwards, with the incomparable advantage of hydraulic power-assist steering system, it can not only be saved
The energy, improves security, also helps environmental protection, and the new and high technology for being the Hyundai Motor development topic that links closely is that automobile turns
To the inexorable trend of System Development.
Compared with traditional hydraulic power-assist steering system, electric boosting steering system has advantages below：Fluid-link steering is helped
The oil pump of Force system, also works when not turning to, and increases energy expenditure.And EPS motor when turning to just is provided and helped
Power, thus energy expenditure can be reduced, and optimal power steering can be provided under various driving cycles, reduce due to road surface not
The caused interference to steering is put down, the steering behaviour of automobile is improved, steering behaviour when automobile is run at a low speed is alleviated
Vertical power, improves steering stability during galloping, and then improve the active safety of automobile；Due to that need not fill
Hydraulic oil and installation hydraulic oil pipe, so the simple installation of system, the free degree is big, and cost is low, the generation of no oil leakage fault,
It has more preferable versatility than conventional hydraulic steering power-assisted system.
Utility model content
The purpose of this utility model is to overcome existing servo steering device complicated, the defect of poor reliability there is provided
A kind of electric automobile electric power-assisted steering apparatus.
The utility model provide technical scheme be：
A kind of electric automobile electric power-assisted steering apparatus, including：
Housing；
Input shaft, it is connected with steering wheel, and the input shaft lower end is provided with gear；Moment of torsion is connected with the input shaft
Sensor；
Turning-bar, it is arranged in housing, and rack will be had by being set on the turning-bar, and the rack is nibbled with the gear
Close, so that turning-bar is moved left and right in housing；The left and right ends of the turning-bar connect left steering bulb and right turn respectively
Bulb；Leading screw is additionally provided with the turning-bar；
Ball nut, it is set in, and leading screw is outer to be coordinated with the leading screw；The ball nut two ends are existed by bearings
On housing；
Motor, is connected by transmission device with the ball nut, to drive the ball nut around own axes
Rotation.
Preferably, the transmission device includes：
First belt wheel, it is fixedly connected by flat key with motor axle；
Second belt wheel, its fixation is set in outside the ball nut, is coaxially fixed with the ball nut；
Timing belt, it connects the first belt wheel and the second belt wheel, the power of the first belt wheel is passed into the second belt wheel.
Preferably, the ball nut at bearing touch with being provided with annealed layer.
Preferably, annular projection is provided with the ball nut outer wall, second belt wheel is fixed by screws in
On annular projection.
Preferably, the turning-bar is connected with displacement transducer, to measure turning-bar lateral displacement.
Preferably, in addition to vehicle speed sensor and lateral acceleration sensor.
The beneficial effects of the utility model are：The electric automobile electric power-assisted steering apparatus that the utility model is provided, structure
Compact, machinery driving efficiency is high, is driven sensitive；With less wear extent, service life is long, reliable operation.
Brief description of the drawings
Fig. 1 is electric automobile electric power-assisted steering apparatus general structure schematic diagram described in the utility model.
Fig. 2 is rack and pinion schematic view of the mounting position described in the utility model.
Fig. 3 is servomechanism structure sectional view described in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
As shown in Figure 1 and Figure 2, the utility model provides a kind of electric automobile electric power-assisted steering apparatus, including housing
110, turning-bar 120 is provided with housing.Input shaft 130 is connected with steering wheel, and the lower end of the input shaft 130 sets with teeth
Wheel 131.Torque sensor is connected between the input shaft 130 and steering wheel, by torque sensor come measurement direction disk
Torque.
Rack 121 is provided with the turning-bar 120, the rack 121 is meshed with the gear 131, when rotation side
During to disk, rotated by steering wheel band driven input shaft 130, and then turning-bar 120 is moved left and right in housing 110 along axis.
The two ends of the turning-bar 120 connect left steering bulb 140 and right turn bulb 150 respectively, pass through the moving belt of turning-bar 120
Dynamic left steering bulb 140 and right turn bulb 150 are moved, and realize the steering of wheel.
Fig. 3 is referred in the lump, and the electric automobile electric power-assisted steering apparatus also includes servomechanism 160.The booster engine
Structure 160 includes the ball-screw 161 being arranged on turning-bar 120, and the ball nut 162 being set in outside ball-screw 161, institute
Ball nut 162 is stated to be engaged with ball-screw 161.The left and right ends of the ball nut 162 are axle bearing mount portion, are pacified thereon
Equipped with bearing 163, the outer ring of the bearing 163 is fixed on housing 110, so that the two ends of ball nut 162 pass through bearing 163
It is supported on housing 110.Annealed layer is provided with the axle bearing mount portion at the two ends of ball nut 162.By the setting of annealed layer,
The internal stress at the two ends of ball nut 162 is released, hardness is reduced, prevents ball nut 162 from cracking.
The shell of motor 164 is fixed on housing 110, and the motor 164 passes through transmission device and ball spiral shell
Mother 162 connects, and drives the ball nut 162 to rotate, and then drives ball-screw 161 to move left and right.
The transmission device includes the first belt wheel 165, and it is connected with the drive shaft of motor 164 by flat key, and second
Its fixation of belt wheel 166 is set in outside the ball nut 162, and annular projection 167 is provided with the outer wall of ball nut 162,
Second belt wheel 166 is fixed by screws on annular projection 167, makes ball nut 162 and the second belt wheel 166 coaxial solid
It is fixed.First belt wheel 165 and the second belt wheel 166 are connected by timing belt 168, so that the power of the first belt wheel 165 passes to
Two belt wheels 166.
When steering wheel is turned to, band driven input shaft 130 is rotated, and then nibbling by rack 121 and gear 131
Close, realize moving left and right for turning-bar 120.Meanwhile, the steering torque of measurement direction disk, controller are capable of by torque sensor
The steering torque of the steering wheel obtained according to measurement, control servomechanism 160 exports extra booster torquemoment, helps to turn to, subtracts
The rotating torque of light steering wheel, makes steering wheel lighten, is easy to driver to operate.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed to use, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (6)
1. a kind of electric automobile electric power-assisted steering apparatus, it is characterised in that including：
Housing；
Input shaft, it is connected with steering wheel, and the input shaft lower end is provided with gear；Torque sensing is connected with the input shaft
Device；
Turning-bar, it is arranged in housing, and rack will be had by being set on the turning-bar, and the rack is engaged with the gear, with
Turning-bar is set to be moved left and right in housing；The left and right ends of the turning-bar connect left steering bulb and right turn bulb respectively；
Leading screw is additionally provided with the turning-bar；
Ball nut, it is set in, and leading screw is outer to be coordinated with the leading screw；The ball nut two ends are by bearings in housing
On；
Motor, is connected by transmission device with the ball nut, to drive the ball nut to be rotated around own axes.
2. electric automobile electric power-assisted steering apparatus according to claim 1, it is characterised in that the transmission device bag
Include：
First belt wheel, it is fixedly connected by flat key with motor axle；
Second belt wheel, its fixation is set in outside the ball nut, is coaxially fixed with the ball nut；
Timing belt, it connects the first belt wheel and the second belt wheel, the power of the first belt wheel is passed into the second belt wheel.
3. electric automobile electric power-assisted steering apparatus according to claim 1, it is characterised in that the ball nut and axle
Accept synapsis and be provided with annealed layer.
4. electric automobile electric power-assisted steering apparatus according to claim 2, it is characterised in that the ball nut outer wall
On be provided with annular projection, second belt wheel is fixed by screws on annular projection.
5. electric automobile electric power-assisted steering apparatus according to claim 4, it is characterised in that the turning-bar and displacement
Sensor is connected, to measure turning-bar lateral displacement.
6. electric automobile electric power-assisted steering apparatus according to claim 5, it is characterised in that also including vehicle speed sensor
And lateral acceleration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720246226.9U CN206520647U (en) | 2017-03-14 | 2017-03-14 | Electric automobile electric power-assisted steering apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720246226.9U CN206520647U (en) | 2017-03-14 | 2017-03-14 | Electric automobile electric power-assisted steering apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206520647U true CN206520647U (en) | 2017-09-26 |
Family
ID=59902919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720246226.9U Expired - Fee Related CN206520647U (en) | 2017-03-14 | 2017-03-14 | Electric automobile electric power-assisted steering apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206520647U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106891987A (en) * | 2017-03-14 | 2017-06-27 | 辽宁工业大学 | Electric automobile electric power-assisted steering apparatus and control method |
| CN109591881A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | Rear-axle steering device, vehicle and its rear-wheel steering system |
| WO2023045603A1 (en) * | 2021-09-23 | 2023-03-30 | 宁德时代新能源科技股份有限公司 | Frame and automobile |
-
2017
- 2017-03-14 CN CN201720246226.9U patent/CN206520647U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106891987A (en) * | 2017-03-14 | 2017-06-27 | 辽宁工业大学 | Electric automobile electric power-assisted steering apparatus and control method |
| CN109591881A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | Rear-axle steering device, vehicle and its rear-wheel steering system |
| WO2023045603A1 (en) * | 2021-09-23 | 2023-03-30 | 宁德时代新能源科技股份有限公司 | Frame and automobile |
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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: 20170926 Termination date: 20190314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |