KR101749295B1 - Actuator for auto headlamp leveling system - Google Patents
Actuator for auto headlamp leveling system Download PDFInfo
- Publication number
- KR101749295B1 KR101749295B1 KR1020150179532A KR20150179532A KR101749295B1 KR 101749295 B1 KR101749295 B1 KR 101749295B1 KR 1020150179532 A KR1020150179532 A KR 1020150179532A KR 20150179532 A KR20150179532 A KR 20150179532A KR 101749295 B1 KR101749295 B1 KR 101749295B1
- Authority
- KR
- South Korea
- Prior art keywords
- housing
- sensor
- shaft
- motor
- rotational force
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/068—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by mechanical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
- F16H1/166—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel with members rotating around axes on the worm or worm-wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/039—Gearboxes for accommodating worm gears
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
An actuator for an auto headlamp leveling system includes a housing, a printed circuit board, a motor, a planetary gear assembly, a shaft, a control bar, and a rotation sensor. The printed circuit board is mounted in the housing. The motor is connected to the printed circuit board in the housing and generates forward and reverse rotational force. The planetary gear assembly receives and reduces the rotational force of the motor in the housing. The shaft rotates through the planetary gear assembly in the housing and receives the reduced rotational force. The adjustment bar is pulled out of the housing in a state of being screwed to the shaft, and is guided by the housing and reciprocates along the longitudinal direction. The rotation sensor detects the rotation position and the rotation direction of the shaft.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator employed in an auto head lamp leveling system for automatically adjusting an irradiation angle of a headlamp for a vehicle.
In general, bulb type lamps and high intensity discharge (HID) lamps are widely used as vehicle headlamps. The HID lamp is mainly used as a downward light lamp.
When the HID lamp is used as a headlamp for a vehicle, a leveling device for adjusting the angle of irradiation of the HID lamp must be installed. The leveling device is configured to adjust the angle of irradiation of the head lamp by vertically pivoting the reflector by the actuator. Recently, an auto head lamp leveling system, which automatically adjusts the irradiation angle of a headlamp for a vehicle, is applied to a vehicle for convenience of use.
An object of the present invention is to provide an actuator for an auto head lamp leveling system capable of reducing noise during driving.
According to an aspect of the present invention, there is provided an actuator for an automatic head lamp leveling system, including a housing, a printed circuit board, a motor, a planetary gear assembly, a shaft, a control bar, and a rotation sensor. The printed circuit board is mounted in the housing. The motor is connected to the printed circuit board in the housing and generates forward and reverse rotational force. The planetary gear assembly receives and reduces the rotational force of the motor in the housing. The shaft rotates through the planetary gear assembly in the housing and receives the reduced rotational force. The adjustment bar is pulled out of the housing in a state of being screwed to the shaft, and is guided by the housing and reciprocates along the longitudinal direction. The rotation sensor detects the rotation position and the rotation direction of the shaft.
According to the present invention, when the irradiation angle of the head lamp is adjusted by the auto head lamp leveling system, the operating noise of the actuator can be reduced, thereby providing a comfortable driving environment for the driver.
According to the present invention, as compared with the variable resistance method, the resolving power for sensing the rotational position and the rotational direction of the shaft can be enhanced, so that the irradiation angle of the head lamp can be precisely controlled.
1 is a perspective view of an actuator for an auto head lamp leveling system according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of Fig. 1. Fig.
3 is a perspective view showing the inside of the actuator shown in Fig.
FIG. 4 is a side view showing the rotation sensor taken in FIG. 3; FIG.
Fig. 5 is a sectional view of Fig. 1. Fig.
FIG. 6 is a cross-sectional view showing an example of operation of the adjustment bar in FIG.
FIG. 7 is a side view showing an operation example of the actuator shown in FIG. 1. FIG.
The present invention will now be described in detail with reference to the accompanying drawings. Here, the same reference numerals are used for the same components, and a detailed description of known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.
1 is a perspective view of an actuator for an auto head lamp leveling system according to an embodiment of the present invention. Fig. 2 is an exploded perspective view of Fig. 1. Fig. 3 is a perspective view showing the inside of the actuator shown in Fig. FIG. 4 is a side view showing the rotation sensor taken in FIG. 3; FIG.
1 to 4, an
The
The housing
The housing
The printed
The circuitry of the
The
The
The
The
The
The
The
This
The
The
The
The
As shown in Fig. 7, the
The
2 to 4, the
The sensor dogs 171 may be arranged at the same pitch. As another example, the
The
The
On the other hand, the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation and that those skilled in the art will recognize that various modifications and equivalent arrangements may be made therein. It will be possible. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.
110 .. Housing
120. Printed Circuit Board
130 .. Motor
140 .. Planetary gear assembly
142 .. Sun gear
143 .. ring gear
144 .. Planetary gear
145 .. Carrier
150 .. Shaft
160 .. Adjustment Bar
170 .. Rotation Detector
171 .. Sensor Dog
176 .. Proximity sensor
Claims (5)
A printed circuit board mounted within the housing;
A motor connected to the printed circuit board in the housing to generate forward and reverse rotational force;
A planetary gear assembly for receiving and decelerating a rotational force of the motor in the housing;
A shaft rotatably receiving a reduced rotational force through the planetary gear assembly in the housing;
A control bar withdrawn from the housing in a state of being screwed to the shaft and guided by the housing and reciprocating along the longitudinal direction; And
And a rotation sensor for sensing the rotation of the shaft,
The rotation sensor comprises:
Sensor dogs formed on the disk member so as to be arranged along the circumferential direction with respect to the center of the shaft and rotated together with the shaft,
And a proximity sensor mounted on the printed circuit board so as to be disposed on the rotation path of the sensor dogs and sensing one of the sensor dogs,
One of the sensor dogs is wider or narrower than the other sensor dogs and is used to sense the reference position,
Wherein the proximity sensor includes a light emitting portion and a light receiving portion, and the light emitting portion and the light receiving portion are fixed to the sensor bracket with one sensor dog interposed therebetween on the rotation path of the sensor dogs.
The planetary gear assembly includes:
Package,
A sun gear disposed in the center of the package and receiving rotational force from the motor,
A ring gear disposed on the outer side of the sun gear and concentrically with the sun gear and formed on an inner wall of the package,
A plurality of planetary gears arranged along the circumference of the sun gear between the sun gear and the ring gear and each having one side portion engaged with the sun gear and each other side portion meshed with the ring gear,
And a carrier for transmitting rotational force generated by revolution of the planetary gears to the shaft.
A worm coaxially fixed to a drive shaft of the motor,
Further comprising a worm gear fixed coaxially with the sun gear to mesh with the worm.
Further comprising a gyro sensor and an acceleration sensor mounted on the printed circuit board.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150179532A KR101749295B1 (en) | 2015-12-15 | 2015-12-15 | Actuator for auto headlamp leveling system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150179532A KR101749295B1 (en) | 2015-12-15 | 2015-12-15 | Actuator for auto headlamp leveling system |
Publications (1)
Publication Number | Publication Date |
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KR101749295B1 true KR101749295B1 (en) | 2017-06-21 |
Family
ID=59281951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020150179532A KR101749295B1 (en) | 2015-12-15 | 2015-12-15 | Actuator for auto headlamp leveling system |
Country Status (1)
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KR (1) | KR101749295B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107585319A (en) * | 2017-09-09 | 2018-01-16 | 安徽工程大学 | A kind of 90 degree of rotating illuminating light fixtures with planet gear reducing mechanism |
KR20200058627A (en) * | 2018-11-19 | 2020-05-28 | 미네베아미츠미 가부시키가이샤 | Actuator and Method for controlling thereof and electronic device |
KR20200058628A (en) * | 2018-11-19 | 2020-05-28 | 미네베아미츠미 가부시키가이샤 | Actuator and Method for controlling thereof and electronic device |
KR20210137575A (en) * | 2019-03-28 | 2021-11-17 | 다이슨 테크놀러지 리미티드 | How to Determine Rotor Position of Brushless Permanent Magnet Motor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014051256A (en) * | 2012-09-10 | 2014-03-20 | Takahata Precision Japan Co Ltd | Vehicle headlamp leveling device |
-
2015
- 2015-12-15 KR KR1020150179532A patent/KR101749295B1/en active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014051256A (en) * | 2012-09-10 | 2014-03-20 | Takahata Precision Japan Co Ltd | Vehicle headlamp leveling device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107585319A (en) * | 2017-09-09 | 2018-01-16 | 安徽工程大学 | A kind of 90 degree of rotating illuminating light fixtures with planet gear reducing mechanism |
KR20200058627A (en) * | 2018-11-19 | 2020-05-28 | 미네베아미츠미 가부시키가이샤 | Actuator and Method for controlling thereof and electronic device |
KR20200058628A (en) * | 2018-11-19 | 2020-05-28 | 미네베아미츠미 가부시키가이샤 | Actuator and Method for controlling thereof and electronic device |
KR102611102B1 (en) * | 2018-11-19 | 2023-12-07 | 미네베아미츠미 가부시키가이샤 | Actuator and Method for controlling thereof and electronic device |
KR102648826B1 (en) * | 2018-11-19 | 2024-03-20 | 미네베아미츠미 가부시키가이샤 | Actuator and Method for controlling thereof and electronic device |
KR20210137575A (en) * | 2019-03-28 | 2021-11-17 | 다이슨 테크놀러지 리미티드 | How to Determine Rotor Position of Brushless Permanent Magnet Motor |
KR102631215B1 (en) | 2019-03-28 | 2024-01-31 | 다이슨 테크놀러지 리미티드 | How to determine the rotor position of a brushless permanent magnet motor |
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