CN101209692A - Rotating executor for automobile front shining lamp - Google Patents
Rotating executor for automobile front shining lamp Download PDFInfo
- Publication number
- CN101209692A CN101209692A CNA2006101483635A CN200610148363A CN101209692A CN 101209692 A CN101209692 A CN 101209692A CN A2006101483635 A CNA2006101483635 A CN A2006101483635A CN 200610148363 A CN200610148363 A CN 200610148363A CN 101209692 A CN101209692 A CN 101209692A
- Authority
- CN
- China
- Prior art keywords
- output shaft
- rotary actuator
- stepping motor
- gear
- intermediate gear
- 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
Images
Landscapes
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The invention relates to a rotary executor used for an automobile headlamp. The invention is characterized in that an output shaft is provided with an output shaft gear which is connected with a stepping motor by a transmission gear group; a shell is internally provided with a circuit board; the input terminal of the stepping motor is connected with the circuit of the circuit board; the transmission gear group is provided with a magnetic ring which is coupled with a hall chip which is connected with the circuit of the circuit board. The stepping motor of the invention provides the power by which the spot light unit of a luminaire is rotated. After the stepping motor is operated, the angle of the spot light unit of the headlamp of the automobile which is connected with the stepping motor is changed by the transmission of a series of gear groups in order to lead the spot light unit to rotate around the output shaft of the stepping motor, thus implementing the turning luminescence of the headlamp of the automobile; by the matching and application of the magnetic ring and the hall chip, whether the rotary executor runs normally or not can be judged, and the position precision of the rotary executor is ensured. The invention has the advantages of high control precision and high transmission reliability.
Description
Technical field:
The present invention relates to a kind of control setup of direction of illumination of car headlamp, particularly a kind of rotary actuator that is used for car headlamp.
Background technology:
The head lamp of automobile all is the both sides that are fixed on automotive front, when automobile is kept straight on night, its light can be radiated on the road surface of working direction, guarantee that the driver has good the place ahead sight line, but when automobile when bend is turned, the irradiation light of head lamp has but departed from the working direction of automobile, causes the driver not see the road surface situation, bring difficulty for driver's safety traffic, often therefore cause traffic accident.This not only can influence normal driving and operation, also can cause unnecessary property damage, even jeopardizes personal safety, especially in the hill path or this problem of the highway section of geographical conditions complexity just more outstanding.There have been some can be now with the head lamp that changes direction of illumination of wheel steering, as have plenty of the cable wire of utilization and carry out transmission, with the rotation of bearing circle pivot angle is passed to vehicle head lamp, operation provides convenience to night safe with the left-right rotation of control vehicle head lamp, but its whole drive mechanism complexity, be not easy to the layout on the vehicle, and along with the prolongation of period of service, the stretching of cable wire, the servo-actuated of the illumination angle of vehicle head lamp is variation also, therefore there are complex structure, the shortcoming that tracking effect is relatively poor generally.
Summary of the invention:
The object of the present invention is to provide the higher rotary actuator that is used for car headlamp of a kind of control accuracy and reliable transmission.
To achieve these goals, technical scheme of the present invention is as follows: a kind of rotary actuator that is used for car headlamp, comprise shell, shell is provided with output shaft, it is characterized in that this output shaft is provided with output shaft gear, this output shaft gear is connected with stepping motor by driving gear set, also be provided with wiring board in the enclosure, the input end of stepping motor is connected with the wiring board circuit, is provided with magnet ring in the driving gear set, magnet ring and Hall chip are coupled, and this Hall chip is connected with the wiring board circuit.This driving gear set comprises first intermediate gear that is connected with a joggle with output shaft gear, first intermediate gear is captiveed joint with second intermediate gear, second intermediate gear and the 3rd intermediate gear are connected with a joggle, the 3rd intermediate gear is captiveed joint with the 4th intermediate gear, the 4th intermediate gear and the 5th intermediate gear are connected with a joggle, the 5th intermediate gear is captiveed joint with the output shaft of stepping motor, and magnet ring is connected with second intermediate gear, and Hall chip is located on the wiring board of magnet ring top.
Among the present invention wiring board can with the LIN protocol communication of vehicle body ECU, needs according to the light anglec of rotation are controlled it by wiring board, realize the adjusting of the light-illuminating angle of AFS system rapidly, use stepping motor to provide and make light fixture shot-light unit rotate needed power.After the stepping motor action, change the angle of coupled car headlamp shot-light unit, the shot-light unit is rotated around its output shaft, thereby realize the turning illumination of car headlamp by the transmission of transmission series of gears group.The invention has the advantages that control accuracy and reliable transmission height.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Fig. 2 is forward explosion figure of the present invention
Fig. 3 is reverse explosion figure of the present invention
Fig. 4 is a fundamental diagram of the present invention
The specific embodiment:
Below in conjunction with drawings and Examples the present invention is elaborated.
What the present invention relates to is a kind of rotary actuator that is used for car headlamp self adaptation light adjusting system AFS (AdaptiveFrontlighting System:AFS), it can realize the LIN protocol communication with vehicle body master electronic control unit (electronic control unit:ECU), and according to car body sensor signal (by vehicle body master ECU) judgement driving states, the calculating angle that head lamp shot-light unit need be adjusted under different driving states, the control signal drive stepping motor of sending according to vehicle body master ECU by rotary actuator afterwards.After the stepping motor action, change the angle of coupled car headlamp shot-light unit, the shot-light unit is rotated around its output shaft, thereby realize the turning illumination of car headlamp by the transmission of transmission series of gears group.This product with compact structure, powerful, transmission is stable, and the requirement of the light-illuminating angle control of car headlamp AFS system can be provided, and comprises the control of light modulation up and down and left and right sides light-modulating motor.And, the motor that the present invention is used to drive is a stepping motor, therefore, rotary actuator has also comprised the driving of stepping motor, and rotary actuator is inner by a series of gear transmission, and the initial step size of stepping motor is converted into less step size on the rotary actuator output shaft, make the present invention when satisfying the light modulation rate request, obtained higher control accuracy and reliable transmission.
There is shown the structure of this rotary actuator, this rotary actuator comprises shell 1, shell 1 is provided with output shaft 2, it is characterized in that this output shaft 2 is provided with output shaft gear 3, this output shaft gear 3 is connected with stepping motor 4 by driving gear set, also is provided with wiring board 5 in shell 1, the input end of stepping motor 4 is connected with wiring board 5 circuit, be provided with magnet ring 6 in the driving gear set, magnet ring 6 is coupled with Hall chip 7, and this Hall chip 7 is connected with wiring board 5 circuit.This driving gear set comprises first intermediate gear 8 that is connected with a joggle with output shaft gear 3, first intermediate gear 8 is captiveed joint with second intermediate gear 9, second intermediate gear 9 and the 3rd intermediate gear 10 are connected with a joggle, the 3rd intermediate gear 10 is captiveed joint with the 4th intermediate gear 11, the 4th intermediate gear 11 and the 5th intermediate gear 12 are connected with a joggle, the 5th intermediate gear 12 is captiveed joint with the output shaft of stepping motor 4, magnet ring 6 is installed on second intermediate gear 9, and Hall chip 7 is located on the wiring board 5 that is positioned at magnet ring 6 tops.
After stepping motor 4 action,, under the prerequisite that satisfies light modulation speed and light modulation required torque, reduce the stepping motor 4 resulting smooth deformation angle that makes a move, can make the control accuracy of rotary actuator higher by the series of gears transmission.
Detect its postrun position by one group of Hall element.This Hall element comprises Hall chip 7 and magnet ring 6, and its middle magnetic ring 6 is fixed in the transmission device on the secondary gears with respect to output shaft, and in order to produce magnetic field, Hall chip 7 is fixed on the wiring board 5, changes in order to induced field.This design can judge whether rotary actuator operation is normal, for the positional precision of rotary actuator provides assurance, simultaneously, also can provide fault alarm required signal.
Can design several asymmetrically distributed grooves above the magnet ring 6, make things convenient for the installing and locating of magnet ring 6, simultaneously, when rotating, can export the magnetic field of a variation along with transmission gear.Magnet ring 6 is installed on second intermediate gear 9, rather than is installed on the output shaft 2, and the rotational angle of magnet ring 6 is increased, and eliminates the influence of the changes of magnetic field response accuracy of magnet ring 6.
The head of output shaft 2 is processed into spline form 13, can make the transmission of rotary actuator when work more reliable, simultaneously, increases by an elastic spring at output shaft 2 and shot-light unit matching place, can eliminate the gap that causes because of Mismachining tolerance.
Bottom at output shaft 2, preloading spring 15 has been installed, the predetermincd tension of rotary actuator can be provided, and guarantee that preloading spring 15 is in contraction state all the time when rotary actuator is worked, eliminate the influence in transmission gear Mismachining tolerance and gear-driven gap, guaranteed the accuracy of positioning of rotary actuator.Shell 1 is provided with shell draw-in groove 16, and an end of preloading spring 15 is fixed on the shell draw-in groove 16, and the other end of preloading spring 15 is fixed on the output shaft draw-in groove 17 that is located on the output shaft 2.About rotary actuator divides two, adopt symmetrical preloading spring respectively, guarantee that in the operating range of rotary actuator, preloading spring all is in compressive state, for rotary actuator provides predetermincd tension in whole operating range; During installation, need to use anchor clamps change preloading spring 15 over to output shaft draw-in groove 17 by the compression direction, predetermincd tension is promptly arranged after making the spring installation.
Design has the shell draw-in groove 16 of a fixing spring in the shell, and shell draw-in groove 16 has certain width, and preloading spring 15 is moved within the specific limits, can see preloading spring 15 by shell draw-in groove 16.Because output shaft 2 hand of rotation of left rotation and right rotation actr are inconsistent, in order to make preloading spring 15 in whole operating range, can both provide predetermincd tension, therefore, the preloading spring 15 of left rotation and right rotation actr adopts left-handed and dextrorotation respectively, after rotary actuator installs, under the effect of predetermincd tension, the position of preloading spring 15 in shell draw-in groove 16 is also inequality, therefore, can differentiate the rotary actuator of left and right sides according to the position of preloading spring 15 in the shell draw-in groove 16.Simultaneously, owing to have predetermincd tension all the time on the transmission gear of rotary actuator, therefore, when gear failure (as situations such as broken teeths) took place, output shaft 2 always can be got back to initial position under the effect of preloading spring 15.
Using stepping motor 4 to provide makes light fixture shot-light unit rotate needed power.Can control it by wiring board 5 according to the needs of the light anglec of rotation, realize the adjusting of the light-illuminating angle of AFS system rapidly.The shell of stepping motor 4 is provided with claw 14, and the shell 1 of this rotary actuator is provided with the notch that matches with this claw 14, by fixing claw 14 and cooperating of notch, makes the installation in its production process simpler effectively, and accuracy of positioning is higher.Stepping motor 4 cooperates after punching press with the shell 1 of rotary actuator by the claw on its shell, and the pin of stepping motor 4 and wiring board 5 weld, and have avoided using other connector, have reduced cost, also make the performance of product more reliable simultaneously; Installing and fixing of wiring board 5 is to realize by some welding that are distributed in the pin welding of location rivet hot pin 19 on the shell 1, stepping motor and rotary actuator connector 20 and eight stitch 21 of wiring board 5, increased position constraint, requirement on machining accuracy to part is higher, but can guarantee rotary actuator ground precision better, thereby make the output feedback signal of Hall element of pairing more reliable, Hall chip 7 is on PCB wiring board 5, but the magnet ring 6 that causes changes of magnetic field is installed on the gear 9, also makes the vibration resistance performance of rotary actuator better simultaneously.
The present invention has adopted the connector of 8 pins, design in the circuit board simultaneously has the independent drive of two cover stepping motors, therefore, in the time of in being applied to AFS, as long as send processing signals by a LIN signal wire (SW), the driving of horizontal light-modulating motor can be provided simultaneously by this rotary actuator, reduce the driver module that is used for horizontal light modulation among the AFS, save cost greatly.8 stitch 11 of connector 20 and shell 1 one injection moulding have guaranteed accuracy of positioning, make its with the joint of 20 pairs of slotting sides of connector and wiring board 5 on welding hole cooperate better, be convenient to realize that the automation on the manufacturing line installs.This 8 pin functions of pins is defined as a LIN signal wire (SW), one+12V power lead, ground connection and four step motor drive signal wire (SW)s and an empty pin, after can be used for, empty pin carries out replenishing on the function (the motor pin on the rotary actuator is in rotary actuator inside, with the wiring board welding).
By such design, can realize the LIN protocol communication with vehicle body ECU, and judge driving states according to car body sensor signal (by vehicle body ECU), calculate the adjustment angle of head lamp shot-light unit, and drive stepping motor.The information exchange that this design can make rotary actuator and vehicle body ECU is simple and fast more, and efficient is higher.By a LIN signal wire (SW) control, drive two motors (motor that is used for the horizontal light modulation executor of light modulation up and down and is used for the rotary actuator of bend illumination) that the realization of AFS function needs simultaneously by a rotary actuator, improve the efficient of control, saved cost.
Fig. 4 shows principle of work of the present invention: when vehicle driving states changes, when needing to change the irradiating angle of car headlamp, vehicle body ECU is according to the detection signal of vehicle body sensor, send a control signal to rotary actuator by vehicle body LIN bus, after rotary actuator receives this signal, judge that at first this signal is control rotary actuator or controlling level light-modulating motor, if this signal is a controlling level light modulation stepping motor, then the MCU on the PCB wiring board goes out the pulse count of horizontal light modulation stepping motor being adjusted needs according to calculated signals, and produce corresponding pulse, output to horizontal light modulation stepping motor by motor control module; If confirming this signal is to control rotary actuator, then judge the position of rotary actuator output shaft according to the output signal of Hall element, calculate the alternate position spike of current location and control signal assigned address, the step number that the calculated step motor need move and analog signal conversion become the needed impulse singla of drive stepping motor, drive stepping motor work.Above process all is to finish on the PCB wiring board, and its core is a micro controller system.After the stepping motor operation, by the gear cluster transmission, (stepping motor whenever makes a move with the step size of stepping motor, the angle that the output shaft of stepping motor turns over) being transformed into 0.1 of rotary actuator output shaft by 15 degree spends, make the control accuracy of rotary actuator higher, and, because the rotating speed of stepping motor depends on driving frequency, therefore, as long as under the prerequisite of the output torque that satisfies rotary actuator, by changing the frequency of micro controller system output pulse signal, just can control the speed that the beam projecting angle changes, make the dynamic response performance of rotary actuator better; The position feedback of rotary actuator realizes by a cover Hall element.On the secondary gears that links to each other with output shaft (intermediate gear 9), fix the asymmetric magnet ring of a shape with glue, like this, when rotary actuator moves, just can drive this magnet ring and rotate, thereby obtain the magnetic field of a variation on every side at it by the transmission of gear; Hall detection chip on the wiring board can be according to the variation in this magnetic field, the electric signal that produces a change feeds back to micro controller system, micro controller system just can be judged the residing position of rotary actuator output shaft according to the size of this signal, and then can judge whether normal operation of rotary actuator.
Obviously, the people who is familiar with the headlight beam control technology is without prejudice to spirit of the present invention or do not exceed under the situation of its scope and can make various modifications and distortion to rotary actuator of the present invention, the design, shell that comprises the design of PCB wiring board, transmission device and matching design of each element of inside or the like.Therefore, if various modifications of the present invention and modification are in the scope of appending claims and equivalent thereof, then the present invention includes these modifications and modification.
Claims (7)
1. rotary actuator that is used for car headlamp, comprise shell, shell is provided with output shaft, it is characterized in that this output shaft is provided with output shaft gear, this output shaft gear is connected with stepping motor by driving gear set, also is provided with wiring board in the enclosure, the input end of stepping motor is connected with the wiring board circuit, be provided with magnet ring in the driving gear set, magnet ring and Hall chip are coupled, and this Hall chip is connected with the wiring board circuit.
2. by the described rotary actuator that is used for car headlamp of claim 1, it is characterized in that this driving gear set comprises first intermediate gear that is connected with a joggle with output shaft gear, first intermediate gear is captiveed joint with second intermediate gear, second intermediate gear and the 3rd intermediate gear are connected with a joggle, the 3rd intermediate gear is captiveed joint with the 4th intermediate gear, the 4th intermediate gear and the 5th intermediate gear are connected with a joggle, the 5th intermediate gear is captiveed joint with the output shaft of stepping motor, magnet ring is connected with second intermediate gear, and Hall chip is located on the wiring board of magnet ring top.
3. by claim 1 or the 2 described rotary actuators that are used for car headlamp, it is characterized in that the head of output shaft is processed into the form of spline, is provided with preloading spring in the bottom of output shaft.
4. by the described rotary actuator that is used for car headlamp of claim 3, it is characterized in that shell is provided with the shell draw-in groove, an end of preloading spring is fixed on the shell draw-in groove, and the other end of preloading spring is fixed on the output shaft draw-in groove that is located on the output shaft.
5. by the described rotary actuator that is used for car headlamp of claim 2, it is characterized in that output shaft gear is a sector structure, fan-shaped circular arc is provided with and the first intermediate gear mating teeth, also is provided with the position block that matches with this quadrant gear in the shell.
6. by the described rotary actuator that is used for car headlamp of claim 1, it is characterized in that the shell of stepping motor is provided with claw, the shell of this rotary actuator is provided with the notch that matches with this claw.
7. by the described rotary actuator that is used for car headlamp of claim 1, it is characterized in that wiring board is connected by signal wire (SW) with vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101483635A CN101209692A (en) | 2006-12-28 | 2006-12-28 | Rotating executor for automobile front shining lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101483635A CN101209692A (en) | 2006-12-28 | 2006-12-28 | Rotating executor for automobile front shining lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101209692A true CN101209692A (en) | 2008-07-02 |
Family
ID=39610003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101483635A Pending CN101209692A (en) | 2006-12-28 | 2006-12-28 | Rotating executor for automobile front shining lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101209692A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102906492A (en) * | 2010-04-21 | 2013-01-30 | 欧陆汽车有限责任公司 | Method and device for increasing the robustness of a vehicle headlight having a cylindrical prism |
| CN108275065A (en) * | 2017-01-05 | 2018-07-13 | 常州星宇车灯股份有限公司 | A kind of adaptive front lamp light type switching module based on Hall sensor |
| CN108528323A (en) * | 2018-06-01 | 2018-09-14 | 上海信耀电子有限公司 | A kind of car bulb adjustment actuating mechanism and its working method |
| CN108831192A (en) * | 2018-09-07 | 2018-11-16 | 吉林大学 | Mechanical transport crossing anticollision driving trace guide line laser projection system and its control method |
| CN109307046A (en) * | 2018-12-10 | 2019-02-05 | 上海海压特智能科技有限公司 | Actuator module |
| CN110039975A (en) * | 2019-05-23 | 2019-07-23 | 成都富临精工电子电器科技有限公司 | A kind of electric actuator structure |
-
2006
- 2006-12-28 CN CNA2006101483635A patent/CN101209692A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102906492A (en) * | 2010-04-21 | 2013-01-30 | 欧陆汽车有限责任公司 | Method and device for increasing the robustness of a vehicle headlight having a cylindrical prism |
| CN102906492B (en) * | 2010-04-21 | 2015-04-22 | 大陆汽车有限公司 | Method and device for increasing the robustness of a vehicle headlight having a cylindrical prism |
| CN108275065A (en) * | 2017-01-05 | 2018-07-13 | 常州星宇车灯股份有限公司 | A kind of adaptive front lamp light type switching module based on Hall sensor |
| CN108528323A (en) * | 2018-06-01 | 2018-09-14 | 上海信耀电子有限公司 | A kind of car bulb adjustment actuating mechanism and its working method |
| CN108831192A (en) * | 2018-09-07 | 2018-11-16 | 吉林大学 | Mechanical transport crossing anticollision driving trace guide line laser projection system and its control method |
| CN108831192B (en) * | 2018-09-07 | 2023-09-22 | 吉林大学 | Laser projection system for anti-collision driving track guide line of automobile traffic intersection and control method thereof |
| CN109307046A (en) * | 2018-12-10 | 2019-02-05 | 上海海压特智能科技有限公司 | Actuator module |
| CN110039975A (en) * | 2019-05-23 | 2019-07-23 | 成都富临精工电子电器科技有限公司 | A kind of electric actuator structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201002553Y (en) | Automobile headlamp rotating actuator | |
| CN101209692A (en) | Rotating executor for automobile front shining lamp | |
| JP3687741B2 (en) | Vehicle lighting device | |
| US4733333A (en) | Cornering lamp system for vehicle | |
| CN1951722B (en) | Vehicular lamp | |
| US6761473B2 (en) | Vehicle lighting apparatus | |
| US20090323367A1 (en) | Apparatus and method for controlling head lamp | |
| EP2332775B1 (en) | Light irradiation control system for vehicle lamp | |
| DE10220373B4 (en) | The vehicle lighting device | |
| CN102717746A (en) | Automobile lamp capable of being steered through follow-up control | |
| GB2279140A (en) | Steering wheel controlled car light piloting system | |
| CN101469839A (en) | Light modulation executor for automobile headlamp | |
| CN202448822U (en) | Automobile self-adapting headlamp device based on singlechip | |
| CN103661085A (en) | Car headlamp follow-up steering arc driving system | |
| EP1714831B1 (en) | Vehicle headlight device | |
| CN108275065A (en) | A kind of adaptive front lamp light type switching module based on Hall sensor | |
| CN209600378U (en) | A kind of automobile front steering dimming drive device | |
| CN201941660U (en) | Headlight projection direction adjusting device | |
| CN109703448A (en) | Automobile front steering dimming drive device | |
| EP2528774B1 (en) | Shield actuator for head lamp in the vehicle | |
| CN110356461A (en) | A kind of steering column assembly | |
| CN218301712U (en) | Lamp signal controller for vehicle | |
| CN103692960A (en) | Two-degree-of-freedom steering driving system of automobile headlamp | |
| CN212081122U (en) | Car light AFS rotary mechanism and car light | |
| JP4404716B2 (en) | Variable light distribution type headlamp drive device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080702 |