KR20110006481U - A lamp shield driving apparatus and an adaptive front lighting apparatus using it - Google Patents

Abstract

A lamp shield driving device and an adaptive head lamp device using the same are provided. One aspect of the lamp shield drive apparatus includes a first shield having one or more shield protrusions; A second shield spaced apart from the first shield; And a shield driving part including a step motor as driving means for providing driving force to the first shield and the second shield, wherein the shield driving part is in a reference mode when the step motor rotates in the first direction. The first shield is rotated to form one or more first beam patterns, and when the step motor rotates in the second direction, the first shield and the second shield are rotated together to form a second second beam different from the first beam pattern. Form a beam pattern.

Headlamp, adaptive headlamp, AFLS, beam pattern

Description

A lamp shield driving apparatus and an adaptive front lighting apparatus using it

The present invention relates to a lamp shield driving apparatus and an adaptive head lamp apparatus using the same, and more particularly, to a lamp shield driving apparatus for generating a beam pattern suitable for a driving environment of a vehicle and an adaptive head lamp apparatus using the same. .

In general, the vehicle is provided with an illumination function for the purpose of informing the driving state of his vehicle to other vehicles or other road users so that the object of the driving direction can be seen well at night driving. A head lamp, also known as a headlight, is a lamp that functions to shine ahead of a vehicle, and requires brightness that can identify obstacles on the road at a distance of 100 meters ahead at night. The standard of the headlamp is set differently from country to country, and in particular, the direction of irradiation of the headlamp beam is set differently depending on whether the vehicle is driven right (left driving) or left (right driving).

Conventional vehicle headlamps provide drivers with a fixed lighting pattern, regardless of varying road conditions. Therefore, high speed driving that requires longer distances than existing vehicles, and the surrounding light is brighter than other roads, and the glare is caused by the reflection of urban driving, rain or snow or wet roads, which are less dependent on the brightness of the headlamps. This increases, and when driving in bad weather when the field of view is reduced, a proper field of view for the driver to drive safely is not secured.

Adaptive front lighting system (AFLS) was introduced in an attempt to improve the driver's and opponent's frontal awareness. Adaptive Headlamp System (AFLS) is a system that changes the width and length of headlights according to the driving conditions, road conditions, environmental conditions, etc. of a vehicle. For example, separate headlights may be possible in adaptive headlamp systems when cornering a turnway at low speeds. In addition, the brightness of the headlamp may be adjusted so that the driver of the vehicle approaching the opposite lane is not blinded.

Therefore, there is a need for a system that can provide a headlamp that generates a beam pattern that is suitable for changing road conditions and weather conditions, thereby improving the forward recognition of the driver and the counterpart driver.

An object of the present invention is to provide a lamp shield driving device that provides a variety of beam patterns by operating the first shield and the second shield and an adaptive headlamp device using the same.

Another object of the present invention is to provide a lamp shield drive device and an adaptive headlamp device using the same to drive a first shield or a second shield according to the rotation direction of the drive unit to provide a beam pattern suitable for the surrounding environment. The purpose.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, one aspect of the lamp shield drive device of the present invention is a first shield having one or more shield projections; A second shield spaced apart from the first shield; And a shield driving part including a step motor as driving means for providing driving force to the first shield and the second shield, wherein the shield driving part is in a reference mode when the step motor rotates in the first direction. The first shield is rotated to form one or more first beam patterns, and when the step motor rotates in the second direction, the first shield and the second shield are rotated together to form a second second beam different from the first beam pattern. Form a beam pattern.

One aspect of the adaptive headlamp device of the present invention for achieving the above object is a lamp; A lamp shield driving device which blocks a part of the light provided by the lamp in a predetermined shield pattern; A lens for concentrating the blocked light forward; And the lamp and the lamp shield driving device, wherein the lamp shield driving device comprises: a first shield having one or more shield protrusions; A second shield spaced apart from and parallel to the first shield; And a shield driving part including a step motor as driving means for providing driving force to the first shield and the second shield, wherein the shield driving part is in a reference mode when the step motor rotates in the first direction. One or more first beam patterns are formed as the first shield rotates, and when the step motor rotates in the second direction, the second shield is different from the first beam pattern as the first shield and the second shield rotate together. Form a beam pattern.

According to the present invention, it is possible to provide a variety of beam patterns by driving the first shield and the second shield individually or in conjunction with one driving unit.

In addition, the first shield or the second shield may be driven according to the rotation direction of the driving unit to provide a beam pattern suitable for the surrounding environment.

Effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Specific details of other embodiments are included in the detailed description and the drawings. Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. It should be understood, however, that the present invention is not limited to the embodiments disclosed herein but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, To the person having the invention, and this invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, with reference to the accompanying drawings for a preferred embodiment of the present invention will be described in more detail.

1 shows an exploded perspective view of an adaptive headlamp device according to an embodiment of the present invention, Figure 2 shows a perspective view of the adaptive headlamp device is assembled according to an embodiment of the present invention.

1 and 2, an adaptive headlamp device according to an embodiment of the present invention includes a lamp 70, a shield driving device 200, a holder 250, a housing 350, a lens 80, The reflector 90 may include a left and right driving unit 300 and a leveling driving unit 400.

The lamp 70 provides a light source of the head lamp device. The lamp 70 may be a known light source such as a high voltage emission (HID) lamp, a halogen lamp or an LED light source.

The lens 80 may collect light in one direction and irradiate it in all directions by refracting light that is radiated from the lamp 70 to the reflection surface (not shown) and spreads forward. The lens 80 may be attached to the holder 250, and the holder 250 may be combined with the reflector 90 to configure the appearance of the optical module 100.

The reflector 90 may include a reflector plate that receives the lamp 70 and surrounds the lamp circumference rearward to direct the light emitted from the lamp 70 to the front.

The housing 350 may receive a lamp 70, a holder 250, a reflector 90, a shield driving device 200, and the like. The housing 350 may have a predetermined protrusion 260 on the holder 250. It may be provided to provide a free space to accommodate the to rotate in the left and right direction of the holder 250.

The shield driver 200 drives the shields 210 and 220 to form a predetermined beam pattern of the light provided by the lamp 70. The shields 210 and 220 are partially irradiated by the cut-off shape of the upper part of the shield while the light directly irradiated by the lamp 70 and the light reflected or refracted by the reflective surface move forward. It is possible to form a beam pattern. Therefore, the shield may be used in various kinds, shapes, etc. according to a predetermined beam pattern. For example, the shield driven by the shield driver 200 may include a first shield 210 and a second shield 220. The first shield 210 and the second shield 220 will be described later.

The left and right driving unit 300 rotates the optical module 100 in the left and right direction, and serves to adjust the direction of the optical axis irradiated by the light source in the left and right direction. For example, when the vehicle makes a right turn, the optical module 100 may be rotated to the right by the left and right driving units 300 to irradiate the beam irradiation direction to the right rather than the moving direction of the vehicle. On the contrary, when the vehicle makes a left turn, the vehicle may be irradiated to the left side rather than the moving direction of the vehicle by the left and right driving units 300.

The leveling driver 400 rotates the base 350 in the up and down direction to adjust the direction of the optical axis by the lamp 70 up and down.

On the other hand, the adaptive headlamp device according to an embodiment of the present invention may further include a control unit (not shown) for controlling the shield driving unit 200, the left and right driving unit 300 and the leveling driving unit 400. The controller (not shown) may drive the shield driver 200, the left and right drivers 300, and the leveling driver 400, respectively, to change the optical axis of the light irradiated by the lamp 70 or generate various beam patterns.

3A and 3B show an example of the first shield and the second shield arrangement in the lamp shield driving apparatus according to an embodiment of the present invention.

3A and 3B, the first shield 210 and the second shield 220 may be disposed in parallel with respect to the rotation shafts 212 and 222, respectively.

The first shield 210 may include one or more shield protrusions 232, 234, and 236 on the cylindrical outer circumferential surface 215. The pattern of the shield protrusion may vary depending on the beam pattern to be generated. The shield protrusion may be separated and positioned at an angle on the outer circumferential surface 215 of the cylinder. As shown in FIG. The first shield 210 may be operated by a shield protrusion located at the top of the vertical line about the first rotation shaft 212. For example, as shown in FIG. 3A, when the second shield 220 is stopped, the first shield 210 is rotated so that the first shield protrusion 232 is positioned on a vertical line of the first rotational axis 212, thereby providing a class C. FIG. Can form a beam pattern. Alternatively, the second shield protrusion 234 or the third shield protrusion 236 may be 'activated' by rotating the first shield 210 about the first rotation axis 212 such that a beam pattern of class V or E is generated. can do. In addition, a beam pattern of class H can be generated by placing the cylindrical outer circumferential surface 215 of the shield on top of which no shield projections are 'activated'. Here, the cylindrical outer circumferential surface of the shield is used without a separate shield protrusion for class H. However, like class C, V, and E, the shield protrusion for class H can be placed on the cylindrical outer circumferential surface of the shield to generate a beam pattern of class H. Of course it can. Here, 'activation' means that the shield protrusions 232, 234, and 236 attached to the outer circumferential surface 215 of the cylinder are positioned at the top of the vertical line to partially block light emitted to the front.

As such, when the first shield 210 is rotated based on the first rotation axis 212, the beam patterns generated while the shield protrusions 232, 234, and 236 attached to the first shield 200 are activated may vary. .

The second shield 220 biases and attaches the plate-shaped shield plate 224 to one side of the second rotation shaft 222. The second shield 220 is usually fixed in a state where the shield plate 224 is not vertically lowered. For example, if the shield plate 224 of the second shield 220 is fixed to face horizontally as shown in FIG. 4A, the light provided by the lamp 70 is reflected by the reflecting plate and directed forward. At this time, the shield plate 224 which is horizontal does not interfere with the light directed forward, so that the light directed forward is irradiated to the road surface. The second shield 220 may not be operated or 'disabled' of the shield plate 224 such that the shield plate 224 is stopped at a horizontal level or higher so that the shield plate 224 does not block some of the light that is directed forward. .

Referring to FIG. 3B, the shield plate 224 may be activated by rotating the second shield 220 together with the first shield 210 onto the second rotation shaft 222.

For example, when the road surface, such as rain, gets wet, and the glare may be severely generated by the headlamp, the second shield 220 is rotated to reduce the amount of light in the near area. Can be lowered vertically. In this case, the light reflected by the reflecting plate and directed toward the front may be partially blocked by the shield plate 224 of the second shield 220 to generate shadows in the near light region among the light regions facing forward.

Hereinafter, various beam patterns described above will be briefly described. For example, as shown in Table 1, the beam pattern of the headlamp is divided according to the high beam and the low beam, which can be divided into different classes according to conditions such as driving speed, road characteristics, road condition, lane direction, etc. have.

TABLE 1

Kinds Beam pattern Class C
(Basic Beam)

Class V
(Town Beam)

Class E
(Motorway Light)

Class w
(Wetroad Light)

RHD C

Class H
(High)

At this time, the dotted line in Table 1 can be understood as a beam pattern of C class, it is shown for comparison with each beam pattern. The H class is a beam pattern called a high-beam that illuminates a long distance, and is a beam pattern suitable for a high-speed environment without other vehicles in front.

The RHD C class is a beam pattern used when a road driving environment is changed from right to left traffic based on a vehicle.

Class C is a beam pattern that is suitable when a vehicle is driving on a country road or when there is no special situation and it is not necessary to apply a different mode beam pattern. Compared with a general low-beam, the pattern improves the amount of light while securing a view of the opposite lane.

Class V is a beam pattern suitable when the vehicle is traveling in an environment where the brightness of the surrounding light is secured such as a city area. For example, when the city is running, the speed of the vehicle is 60 km / h or less and the luminance of the road surface is 1 cd / m ² or more. In particular, the left / right field of view is wider than the C class, and the field of view of a shorter distance (about 50 to 60 m) than the C class is secured. However, in order to widen the left / right field of view, it is common to tilt the irradiation direction of the left / right headlamps somewhat outward.

Class E is a beam pattern that is suitable when a vehicle is traveling on a highway or on a road where a substantial straight section is maintained. Thus, the E class has a somewhat longer forward far field than the C class.

Class W is a beam pattern that is suitable when the vehicle is driving in rainy weather or on wet roads. Therefore, the forward far field is somewhat similar to the E class, but in order to reduce the reflective glare up to about 10 to 20 m in front of the front, it is rather characterized by reducing the amount of light.

4 shows a perspective view of a shield driving device in the adaptive headlamp device according to the embodiment of the present invention. FIG. 5 is an exploded perspective view of the shield driving unit in the shield driving device of FIG. 4.

First, referring to FIG. 4, a shield driving device in an adaptive headlamp device according to an embodiment of the present invention may include a first shield 210, a second shield 220, and a shield driver 200. .

The first shield 210 and the second shield 220 have been described in detail with reference to FIGS. 3A and 3B and will be omitted. The shield driver 200 operates the first shield 210 and the second shield 220 according to the rotational direction of the driving means to generate various beam patterns required by the adaptive headlamp device.

Referring to FIG. 5, the shield driver 200 includes an upper case 415, a lower case 417, a step motor 480, a printed circuit board (PCB) 470, a step gear 485, and a first gear 420. ), A second gear 425, a first sub gear 430, a second sub gear 435, a first spring 460, a second spring 465, and a magnet 490.

The upper case 415 and the lower case 417 serve as a housing for receiving the components of the shield driver 200. Accordingly, the upper case 415 and the lower case 417 may be collectively referred to as a shield housing (not shown). The upper case 415 and the lower case 417 may be assembled by a predetermined fastening means, for example, bolts 406, 407, 408, 409, and the like.

The step motor 480 provides a driving force for driving the first gear 420 and the second gear 425 through the step gear 485. The step motor 480 may receive a predetermined control signal from a controller (not shown) to rotate the step gear 485 in a predetermined direction to rotate the first gear 420 and / or the second gear 425. .

The first gear 420, the first sub gear 430, and the first spring 460 may constitute a first gear part (not shown), and the second gear 425 and the second sub gear 435 may be used. And the second spring 465 may constitute a second gear portion (not shown). Here, the first gear 420 and the second gear 425 is located between the step gear 485 to rotate in engagement with the rotation of the step gear 485. For example, when the step gear 485 rotates in the clockwise direction, the first gear 420 and the second gear 425 rotate in the counterclockwise direction.

The first gear 420 may include a first protrusion 440 engaged with the first sub gear 430 to rotate, and the second gear 425 may engage with the first sub gear 435 to rotate. 445).

The first sub gear 430 and the second sub gear 435 may be coupled to and coupled to the first gear 420 and the second gear 425, respectively. The first sub gear 430 and the second sub gear 435 share the same rotation axis as the first gear 420 and the second gear 425, respectively. The first sub gear 430 and the second sub gear 435 may be integrally formed or fixed to the first shield 210 and the second shield 220, respectively. Accordingly, the first shield 210 rotates according to the rotation of the first sub gear 430, and the second shield 220 rotates according to the rotation of the second sub gear 435.

As shown in FIG. 10, the first sub-gear 430 has a predetermined 'first hut without an engagement portion even when the first protrusion 440 is rotated by a predetermined angle on the outer surface of the first sub-gear 430. The stone may include a section 450 '. As another example, the first sub gear 430 is located in a first space 450 formed by a predetermined groove in the center of the first gear 420, and the first sub gear 430 is formed on a predetermined disc. The fan-shaped shape may be cut out by a predetermined angle.

The second sub gear 435 has a predetermined 'second idler section 455' having no engagement portion even when the second protrusion 445 is rotated by a predetermined angle on the outer surface of the second sub gear 435. It may include. The second sub gear 435 may also be formed in a shape obtained by cutting out a fan shape of a predetermined angle from a predetermined disc.

Meanwhile, the first sub gear 430 and the second sub gear 435 are integrally attached to each other, and a first inner gear 432 and a second inner gear having teeth on a predetermined arc are provided. A second inner gear 437. The first inner gear 432 may rotate in engagement with each other when the teeth face each other by the rotation of the second inner gear 437.

The first spring 460 and the second spring 465 serve to return the first shield 210 and the second shield 220 to the reference position, respectively. For example, when the power is applied to the stepper motor 480, or when it is determined that the power is applied to the adaptive headlamp device or is determined to fail, the elastic force is provided to provide the first force. The shield 210 and the second shield 220 may be returned to the reference position to become the reference mode. Here, the 'reference mode' is a beam pattern mode that is automatically formed when the power is applied to the adaptive headlamp device or when the power is turned off. The rotation positions of the shields 210 and 220 and the optical module 100 In this mode, the optical axis position returns to a predetermined reference position or is moved to the reference position. In an embodiment of the present invention, a mode for generating a class C beam pattern may be referred to as a 'reference mode'. However, the reference mode is not limited and may be designated as a setting position of the first shield 210 and the second shield 220 which can be changed in design in the art.

The magnet 490 may be located on the side plate of the first sub gear 430. The magnet 490 may be attached to the side surface of the first sub gear 430 to rotate according to the rotation of the first sub gear 430. The rotation amount of the magnet 490 may be sensed by a sensing sensor such as a hall sensor (not shown) to determine whether there is an abnormality of the first shield 210. . In addition, the magnet 490 may be mounted on the side of the second sub gear 435 to detect an abnormality of the second shield 220 by detecting the rotation amount of the second sub gear 435.

The printed circuit board (PCB) 470 serves to generate and transmit a predetermined control signal. The printed circuit board 470 may include a detection sensor such as a hall sensor (not shown). Also, a printed circuit board (PCB) mounts a plurality of driving components, which may be composed of semiconductor chips designed by one chip technology.

Figure 6a shows an exploded perspective view of the first gear portion and the second gear portion in the adaptive headlamp device according to an embodiment of the present invention, Figure 6b is an adaptive headlamp device in accordance with an embodiment of the present invention Shows a sectional view of the shield drive unit.

First, referring to FIG. 6A, the first gear 420 and the second gear 425 are coupled to the step gear 485. As the step motor 480 rotates in the clockwise or counterclockwise direction, the step gear 485 may rotate in the clockwise or counterclockwise direction. Accordingly, the first gear 420 and the second gear 425 may rotate in the counterclockwise or clockwise direction.

The first gear 420 may have a space in which the first sub gear 430 is seated, and may have a screw thread protruding outward along a circumference thereof. The first gear 420 may include a first protrusion 440 that contacts the first sub gear 430 to rotate the first sub gear 430.

The second sub-gear 435 may also have a space in which the second sub-gear 435 may be seated, and may have a thread protruding outward along the circumference. The second gear 425 may include a second protrusion 445 that contacts the second sub gear 435 to rotate the second sub gear 435.

The first sub gear 430 is integrally attached to an upper end of the first sub body 431 and the first sub body 431 that is seated inside the first gear 420, so that the first sub gear 430 is disposed on a predetermined arc. It may be composed of a first inner gear (a first inner gear) 432 having a.

The second sub gear 435 is integrally attached to an upper end of the second sub body 436 and the second sub body 436, which is seated inside the second gear 425, and is disposed on a predetermined arc. It may be configured as a second inner gear (a second inner gear) 437 having a.

The first sub gear 430 is integrally attached to the first shield 210, and the second sub gear 435 is integrally attached to the second shield 220, so that the first sub gear 430 and the second sub gear 430 are integrally attached to the first shield 210. As the sub gear 435 rotates, the first shield 210 and the second shield 220 may rotate, respectively.

Referring to FIG. 6B, in the reference mode, the gears of the first gear 420 and the second gear 425 are stopped and connected to the step gear 485. For example, when the reference mode is the beam pattern generation mode of class C, the rotational position on the axes of the first shield 210 and the second shield 220 and the direction of the optical axis of the optical module 100 are moved to a predetermined position. Can be set to generate a beam pattern of class C.

When the step gear 485 is rotated in the clockwise direction by the driving of the step motor 480, the first gear 420 and the second gear 425 rotate in the counterclockwise direction, and the step gear (in the counterclockwise direction). When the 485 rotates, the first gear 420 and the second gear 425 may rotate clockwise. In an embodiment of the present invention, one of a clockwise or counterclockwise direction may be referred to as a first direction, and the other one may be referred to as a second direction.

7A to 7C are views schematically showing the operation of the shield driver in the adaptive headlamp device according to the embodiment of the present invention. 7A to 7C, an operation of the shield driver 200 in the adaptive headlamp device according to the exemplary embodiment of the present invention will be described.

First, referring to FIG. 7A, the step gear 485 rotates in a clockwise direction. When the step gear 485 rotates in the clockwise direction, the first gear 420 and the second gear 425 rotate in the counterclockwise direction. At this time, the first gear 420 may rotate the first sub gear 430 by engaging the first protrusion 440 of the first gear 420 with the first sub gear 430 by counterclockwise rotation. have. However, the second gear 425 rotates in a counterclockwise direction so that the second protrusion 445 of the second gear 425 does not mesh with the second sub gear 435, and the " The second sub-gear 435 is not rotated by moving over the two idler section 455 ".

Therefore, the clockwise rotation of the step gear 485 rotates the first shield 210 coupled to the first sub gear 430 to activate the shield protrusion attached to the first shield 210. A beam pattern that may be generated by one shield 210 may be generated. For example, beam patterns of class V, E, RHD C, and H may be generated according to the rotation amount of the first shield 210.

Referring to FIG. 7B, the step gear 485 rotates in the counterclockwise direction. When the step gear 485 rotates in the counterclockwise direction, the first gear 420 and the second gear 425 rotate in the clockwise direction. In this case, the second gear 425 may rotate the second sub gear 435 by engaging the second protrusion 445 of the second gear 425 with the second sub gear 435 by clockwise rotation. . However, the first gear 420 is rotated in the clockwise direction so that the first protrusion 440 of the first gear 420 does not mesh with the first sub gear 430, and the " first " The first sub-gear 430 is not rotated by moving over the idle section 450 ".

Referring to FIG. 7C, as shown in FIG. 7B, the second sub gear 435 rotates clockwise by the clockwise rotation of the second gear 420. Accordingly, the second inner gear 432 of the second sub gear 435 may rotate in the clockwise direction to rotate the first inner gear 432 of the first sub gear 430.

That is, when the clockwise rotation of the second gear 425 is continued as shown in FIG. 7C, the clockwise rotation of the second inner gear 437 is continued to mesh with the teeth of the first inner gear 432 to engage the first inner gear. 432 is also rotated. Accordingly, the first shield 210 may also rotate according to rotation of the first inner gear 432.

As described above, in the embodiment of the present invention, the second shield 220 is rotated by rotating the second shield 220 coupled to the second sub gear 435 by the counterclockwise rotation of the step gear 485. The shield plate attached to the can be activated to produce near-field shading in a beam pattern of a given class W. In addition, the first inner gear 432 is rotated by the rotation of the second inner gear 437 included in the second sub gear 435 to drive the first shield 210 together. The protrusions can be activated together to efficiently generate class W beam patterns.

FIG. 8 schematically shows a configuration for detecting a fail mode in a shield driver in an adaptive headlamp device according to an embodiment of the present invention.

Referring to FIG. 8, the Hall sensor 472 for detecting the position of the magnet 490 may be attached to a predetermined position on the printed circuit board 470 of the shield driver 200. For example, the magnet 490 may be attached to the first sub gear 430 to be a position representing a beam pattern of a class C, which is a predetermined reference mode. Accordingly, the first sub gear 430 rotates in a counterclockwise direction so that the beam patterns of classes V, E, and H are rotated by the first sub gear 430 or the rotation of the first shield 210 is integrally coupled. Can be produced according to the total amount.

On the other hand, for example, the Hall sensor 472 sensing the position of the magnet 490 can be placed at the position of the magnet in the beam pattern representing class V.

For example, the power supply may not be applied to the stepper motor 480 or a problem may occur in the MCU unit, such that a control unit (not shown) does not operate. In an embodiment of the present invention, when the first spring 460 is mounted on the first sub gear 430, an abnormality occurs in the shield driving unit 200, and thus the power is not applied. Can return to class C reference mode.

However, when the first spring 460 also fails in the fail mode, the first shield 210 may not rotate. For example, when the permanent deformation occurs in the first spring 460, the restoring force due to the elastic force is weakened, so that the normal beam pattern conversion operation may not be performed, or may not return to the class C reference mode.

In an embodiment of the present invention, the Hall sensor 472 is attached to a returning intermediate point of the first shield 210 to sense the movement of the first shield 210 or to refer to the class C of the first shield 210. The movement to the location can be detected. If there is no movement of the magnet 490 attached to the first sub-gear 430 in the hall sensor 472, it may be sensed that the normal function of the spring is not performed. The indication may indicate a failure of the shield driver 200.

As described above, in an embodiment of the present invention, the magnet 490 is attached to the first sub gear 430 integrally attached to the first shield 210, and the movement of the magnet 490 is performed by the hall sensor 472. The failure of the shield driving unit 200 can be detected by the detection by the control panel 200.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may be substituted, modified, and modified in various ways without departing from the spirit or essential features of the present invention. It is to be understood that modifications may be made and other specific forms may be employed. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not limiting.

1 is an exploded perspective view of an adaptive headlamp device according to an embodiment of the present invention.

2 is a perspective view of an adaptive headlamp device assembled according to an embodiment of the present invention.

3A and 3B are diagrams illustrating an example of a first shield and a second shield arrangement in the lamp shield driving apparatus according to an embodiment of the present invention.

4 is a perspective view of a shield driving device in an adaptive headlamp device according to an embodiment of the present invention.

FIG. 5 is an exploded perspective view of the shield drive unit in the shield drive device of FIG. 4.

6A is an exploded perspective view of the first gear unit and the second gear unit in the adaptive headlamp device according to the embodiment of the present invention.

6B is a cross-sectional view of the shield driving unit in the adaptive headlamp device according to the embodiment of the present invention.

7A to 7C are views schematically showing the operation of the shield driver in the adaptive headlamp device according to the embodiment of the present invention.

FIG. 8 is a diagram schematically illustrating a configuration of detecting a fail mode in a shield driver in an adaptive headlamp device according to an embodiment of the present invention.

* Description of the main parts of the drawings *

70: lamp 80: lens

90: reflector 200: shield drive unit

300: left and right driving unit 400: leveling driving unit

210: first shield 220: second shield

260: rotation axis projection 350: housing

232, 234, 236: shield protrusion

420: first gear 425: second gear

430: first sub gear 435: second sub gear

432: first inner gear 437: second inner gear

440: first projection 445: second projection

450: first barn section 455: second barn section

480: step motor 485: step gear

490: magnet 472: Hall sensor

Claims (14)

In the lamp shield driving device of the adaptive headlamp device to form a plurality of beam patterns, A first shield having one or more shield protrusions; A second shield spaced apart from the first shield; And A shield driving part including a step motor as driving means for providing a driving force to the first shield and the second shield, In the reference mode, the shield driving unit rotates the first shield to form one or more first beam patterns when the step motor rotates in the first direction, and when the step motor rotates in the second direction, And rotating the first shield and the second shield together to form a second beam pattern different from the first beam pattern. The method of claim 1, And the reference mode is a mode in which positions of the first shield and the second shield are moved to a set reference position. The method of claim 1, And the first beam pattern is a class C beam pattern, a class V beam pattern, a class E beam pattern, or a class H beam pattern generated as the first shield rotates. The method of claim 1, And the second beam pattern is a class W beam pattern generated as the first shield and the second shield rotate together. The method of claim 1, wherein the shield driving unit A first gear unit driving the first shield; And A second gear unit for driving the second shield; The first gear portion and the second gear portion rotates in conjunction with the step gear connected to the drive means, The shield driving unit When the step gear rotates in the first direction in the reference mode, only the first shield is rotated, When the step gear rotates in the second direction in the reference mode, the second shield is rotated, and the second inner gear of the second gear part meshes with the first inner gear of the first gear part to engage the first shield. A lamp shield drive device. The method of claim 5, The first gear unit includes a first gear and a first sub gear that shares the same axis of rotation as the first gear and is engaged with the rotation of the first gear to rotate the first shield. The second gear unit includes a second gear and a second sub-gear sharing the same axis of rotation as the second gear and engaging the rotation of the second gear to rotate the second shield. The first sub gear rotates in mesh when the first gear rotates in the second direction in the reference mode. And the second sub gear is meshed to rotate when the second gear rotates in the first direction in the reference mode. The method of claim 6, When the step gear rotates in the first direction in the reference mode, The first gear rotates in the second direction so that the first projection of the first gear meshes with the first sub gear to rotate the first shield, And the second gear rotates in the second direction such that the second projection of the second gear moves to the second idler section of the second sub gear so that the second shield is not rotated. The method of claim 6, When the step gear rotates in the second direction in the reference mode, The second gear rotates in the first direction so that the second protrusion of the second gear meshes with the second sub gear to rotate the second shield. The first gear is rotated in the first direction so that the second inner gear of the second sub gear is moved while the first protrusion of the first gear moves the first idle section of the first sub gear. And the first shield in engagement with the first inner gear of the first sub gear to rotate the first shield. The method of claim 1, wherein the shield driving unit If the shield drive unit malfunctions, A first spring for returning the first shield to a first reference position; And And a second spring for returning the second shield to a second reference position. The method of claim 1, wherein the shield driving unit And a magnet attached to a first sub gear or a second sub gear to indicate a rotational position of the first shield or the second shield. The method of claim 10, wherein the shield driving unit Further comprising a printed circuit board having a Hall sensor for detecting the position of the magnet, And a malfunction of the first shield or the second shield by the hall sensor. The method of claim 1, In a fail mode in which an error occurs in the operation of the shield driver, the Hall sensor may further include detecting a movement of a magnet rotating according to the rotation of the first shield to detect whether the first shield returns to the reference mode. The lamp shield drive device. lamp; A lamp shield driving device which blocks a part of the light provided by the lamp in a predetermined shield pattern; A lens for concentrating the blocked light forward; And A housing housing the lamp and the shield drive device; The lamp shield driving device A first shield having one or more shield protrusions; A second shield spaced apart from and parallel to the first shield; And A shield driving part including a step motor as driving means for providing a driving force to the first shield and the second shield, In the reference mode, the shield driver forms one or more first beam patterns as the first shield rotates when the step motor rotates in the first direction, and when the step motor rotates in the second direction. And a second beam pattern different from the first beam pattern as the first shield and the second shield rotate together. The method of claim 13, wherein the shield driving unit A first gear unit driving the first shield; And A second gear unit for driving the second shield; The first gear portion and the second gear portion rotates in conjunction with the step gear connected to the drive means, The shield driving unit When the step gear rotates in the first direction in the reference mode, only the first shield is rotated, A lamp for rotating the second shield when the step gear rotates in the second direction in the reference mode, and the inner gear of the second gear portion meshes with the inner gear of the first gear portion to rotate the first shield; Adaptive headlamp device using shield drive device.

Images