CN103363449B - Projection light module with adjustable shadow shield - Google Patents
Projection light module with adjustable shadow shield Download PDFInfo
- Publication number
- CN103363449B CN103363449B CN201310103242.9A CN201310103242A CN103363449B CN 103363449 B CN103363449 B CN 103363449B CN 201310103242 A CN201310103242 A CN 201310103242A CN 103363449 B CN103363449 B CN 103363449B
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- China
- Prior art keywords
- magnet
- shadow shield
- light module
- projection light
- regulation
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
- F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
- F21S41/689—Flaps, i.e. screens pivoting around one of their edges
Abstract
The present invention relates to a kind of projection light module, with light source, the light beam of the light source is converged in the first light distribution by primary optics, first light distribution is located in the shading plane of projection light module, with with image forming optics, the image forming optics are set to, the second light distribution that first light distribution is projected in the front area of projection light module, and with shadow shield and regulation driver, the regulation driver is set to, pass through the optical effect arris (22) of regulation motor adjustment shadow shield (20) of the shadow shield between the first adjusting position and the second adjusting position (44), wherein, the projection light module (10) has the brake apparatus of magnetic, the brake apparatus is set to, delay the regulation campaign of the shadow shield (20) when the shadow shield (20) is close to the first adjusting position (42) and/or the second adjusting position (44) or when the shadow shield (20) is by first adjusting position (42) and/or second adjusting position (44).
Description
Technical field
The present invention relates to a kind of projection light module.
Background technology
This projection light module is known per se and with light source, primary optics, the screening with regulation driver
Tabula rasa and secondary optics, also as image forming optics.Projection light module by light source and the construction of primary optics and
Arrangement is set to so that the light beam of light source is by primary optics constriction into the first light distribution, and first light distribution is located at projection
In the shading plane of optical module.Here, the position restriction at the optical effect edge that shading plane passes through shadow shield.Adjust driver
It is set to, the optical effect arris of shadow shield is moved in the first light distribution and is moved out therefrom.Secondary optics are led to
Cross its construction and arrangement is set to, the first light distribution is projected to the second light distribution of the front area positioned at projection light module
In.
This projection light module be used to producing on the travel of the front area of motor vehicle in a motor vehicle various
Light distribution.According to the position of the optical effect arris of shadow shield, its following also referred to as shadow shield arris, the second produced light
Distribution is for example referred to as dipped beam distribution, hereinafter referred to as " dipped headlight " or distance light distribution, hereinafter referred to as " high beam ", this alternative side
Enumerating for formula is not intended to be exhaustive herein.High beam is produced when shadow shield arris is moved out from the first light distribution.Conversely, hiding
Tabula rasa arris produces dipped headlight when being moved into the first light distribution, because then shadow shield arris is used as bright-dark line of demarcation to throw
Shadow is in the second light distribution.
Known to have a variety of possibility modes for being used to realize movable shadow shield arris, the shadow shield arris is by means of rotation
Mechanism, slew gear, sliding equipment or switching mechanism work.
It must switch in road traffic very fast between dipped headlight and the running status of high beam, that is to say, that
Realized within part second, therefore movable shadow shield attracts magnet acceleration generally by adjusting driver, such as.Accelerate
Shadow shield stop at dipped headlight position followed by fixed stop, here, shadow shield collision be arranged in primary optics
On positioning backstop on.Because generally for guarantee high temperature tolerance and stability requirement, shadow shield and main optical in headlamp
Device is all formed from metal, so collision of the shadow shield in primary optics produces the impact noise of metal.
Even if the not shading sheetmetal desired by driver can be heard often before motor vehicle outside headlamp
Impact noise, especially when engine is not run.Generally in funnelform primary optics due to the construction of its hollow
It is extra to strengthen sound wave transmission.In addition, in view of the continuous popularization of the faint electric motor vehicle of noise, the faint headlamp of noise
It is significant.
Using movable shadow shield mechanism be it is technical expend and the therefore possibility mode of high cost, wherein shadow shield
It is located through stepper motor driver realization.
The content of the invention
Under foregoing background, therefore the purpose of the present invention is, correspondingly constructs and extend the machine of the design beginning type
The projection light module of motor-car headlamp so that between adjusting position switch when due to shadow shield collision primary optics on or
The undesirable noise produced on the support for surrounding primary optics is reduced or if possible even completely avoided.
It is characterised by by the projection light module of the present invention, will be from distance light lamp position by the simple and cheap measure of technology
The shadow shield for putting the acceleration that sets out effectively is slowed down before primary optics are encountered, thus reduce impact velocity and thereby
Noise when reducing collision is produced.
It is achieved in the deceleration of shadow shield, i.e. put on the magnetic force of the inertia force adverse effect of shadow shield.
Magnetic force is preferably by least one magnet to producing, and the magnet is to including two mutually exclusive magnets.Using into
To, mutually exclusive magnet make it possible to neatly select the action direction and active position of magnetic force so that the present invention can be answered
For a variety of known shadow shield mechanisms, on such as rotation, revolution, slip or switching mechanism.
Advantageously, the energy density and/or quantity of magnet pair are so selected so that in the dipped headlight position shape of shadow shield
Into the balance between magnetic force and reset force.The cube of spacing, which is inversely proportional, between the intensity of magnetic force and two magnets (originates：
https：//www.hkcm.de/magnet.php/Dnx=8＆oh=1).Therefore, shadow shield is closer to dipped headlight position, magnetic
Power correspondingly increases.In addition, the intensity of magnetic force in the determining deviation between two magnets also with the material of magnet, volume and shape
Shape or length/diameter-ratio are relevant.The characterisitic parameter for summarizing these relations of magnetic force is referred to as energy density, also referred to as energy product
Or BH- products.Characterisitic parameter description is stored in whole field energys in magnet, and therefore forms the magnetic relevant with the volume of magnet
Energy.Therefore, the energy density of used magnet and the quantity of magnet pair are passed through in the magnetic force of dipped headlight position overall function
It is determined that.The reset force spacing on the contrary with shadow shield and dipped headlight position linearly increases.It therefore, it can by coordinating to be used
Material and magnet pair quantity and the reset force of shadow shield so that produced in dipped headlight position shadow shield mechanism reset force and
Dynamic balance between the magnetic force that the position is acted on, shadow shield mechanism makes shadow shield move on dipped headlight position.Magnetic force and bullet
Power works in opposite direction herein.On equilbrium position, potential energy minimum value is generated.Therefore, shadow shield be braked and
It is maintained at the position.
Herein it is particularly advantageous that the first magnet and the second magnet of magnet pair dipped headlight position with a spacing with respect to that
This arrangement.The spacing should so determine size so that be swung due to its inertia force with the amplitude reduced around dipped headlight position
Shadow shield do not contacted with primary optics or reflector.The spacing is relevant with the weight and acceleration of shadow shield.The spacing
Preferably 2-3mm.
Therefore, it ensure that shadow shield in the contactless final position in dipped headlight position in a straightforward manner.Should be " contactless
Backstop " is switched to the second adjusting position with enabling headlamp noiseless from the first adjusting position (such as high beam position)
(such as dipped headlight position).
A kind of preferred form of implementation of the present invention is designed as, and regulation driver includes attracting armature and back-moving spring.Should
Regulation driver is preferably realised as electromagnetically attracting magnet, and the attraction magnet is set to, in electric current by attracting the line of magnet
Make attraction armature motion during circle into the position limited by backstop, and be maintained in the position.Shadow shield drives with regulation
The attraction armature of device is so coupled so that attract armature to lead to the attractive motion of regulation driver by shadow shield from dipped headlight position
It is attracted to high beam position.
It is also preferred that regulation driver is further improved in the transitional processes from dipped headlight position to high beam position
The rate of tension of back-moving spring.This has the advantage that, is produced in the transitional processes from dipped headlight position to high beam position
Reset force, when regulation driver does not produce movement in other direction, then reset force triggering automatically returns to dipped headlight position.This is
Favourable, because so cocoa is using simple regulation driver, such as to attract magnet, it only applies magnetic force in a direction.
Then, reseting movement is driven by the reset force of elasticity.
Another advantage is that (this is for example in regulation driver malfunction when adjusting driver and can not apply driving force
In the case of occur), elastic reset force triggering is returned to dipped headlight position.If being used for example as adjusting the attraction magnet of driver
Power supply disappear, be automatically moved to dipped headlight position and avoid oncoming vehicle dazzle.
A kind of preferred form of implementation is designed as, and the first magnet of magnet pair is arranged in the leading edge of primary optics, and
Second optics of magnet pair is arranged on shadow shield.In this arrangement, the present invention for shadow shield by prior art
It is particularly easy to realize for known coupling mechanism.Therefore, the first magnet of magnet pair is for example by being bonded and fixed at shading
On the appropriate location of plate.Second magnet is fixed on primary optics with the first magnet on the relative position in dipped headlight position.Example
Such as it is contemplated that bonding as simple fixed form, however it is contemplated that other fixed forms.
A kind of particularly preferred form of implementation is defined as, and is provided for accommodating magnetic on shadow shield and/or primary optics
The groove of body.So construct these grooves so that magnet can be pressed into these grooves.Be achieved in it is cheap, firm simultaneously
And the scheme of heatproof fixes magnet.
It is further advantageous that magnet is to including at least one permanent magnet.Permanent magnet can inexpensively be made a big purchase in large quantities and therefore can
It is simple and inexpensively produce by required magnetic force of the invention with the technology by using permanent magnet.
It is further advantageous that permanent magnet is made up of compression and/or sintering.Permanent magnet is compressed and/or burnt by corresponding powder
Knot is formed.It is possible thereby to many, almost arbitrary shape manufacture magnet, these shapes are particularly suitable for being coupled to what is designed for it
In groove.
It is also preferred that the temperature occurred when the material of permanent magnet is run with projection light module by regulation on shadow shield has
Close ground selection.Permanent magnet has so-called Curie-temperature, when more than the temperature, magnetic relevantly with the material being made from it
To irreversibly it disappear.Generally, it is unstable at a temperature of magnetization is more than the absolute zero, but can be with actual use
A temperature range is provided for related material, inevitable demagnetization is fine slowly carried out in the temperature range.Therefore
It ensure that required magnetic force keeps constant in the whole life-span of headlamp.
It is designed as in a kind of alternative construction, projection light module has at least one additional magnet pair, wherein, it is additional
Magnet is to the magnetic force with attraction, action direction of its action direction perpendicular to the inertia force of shadow shield.The suction of additional magnet pair
Draw magnetic force of the magnetic force perpendicular to repulsion and the inertia force perpendicular to shadow shield, it acts on shadow shield around dipped headlight with buffering
The swing of position.Thus, it is this be arranged in unfixed mechanical stop in the case of realize the stabilization of dipped headlight position.
Another advantage that side applies, magnetic force attracting is that the magnet is by the surface pressing of side in shadow shield
Rotary shaft bearing in generate static friction and thus equally stably act on shading Board position.
In addition, on the one hand the attraction magnetic force acted on along rotary shaft prevent shadow shield from being moved along rotary shaft, and therefore make
The tolerance in shadow shield along the longitudinal register of rotary shaft is obtained to minimize.
Preferably, the first magnet and the second magnet of additional magnet pair in dipped headlight position with spacing cloth relative to each other
Put.Thus the shadow shield final position contactless in dipped headlight function is ensure that in a straightforward manner.It is this it is contactless most
Final position, which is put, enables headlamp to be almost switched to dipped headlight position from high beam position to noiseless.
A kind of preferred embodiment regulation, shadow shield is made up of paramagnetic material.In paramagnetic material, atom,
Lewis' acid has magnetic torque.If paramagnetic material is placed in magnetic field, atom, lewis' acid, briefly
Its basic magnet is oriented parallel to external magnetic field.This causes the magnetic field in material to be enhanced.When its all basic magnets align,
The paramagnetic material can be regarded as the second magnet of magnet pair at the moment.In preferable paramagnet, each magnetic torque phase
Mutually separation.Therefore internal magnetic field is disintegrated after away from external magnetic field due to the warm-up movement of particulate.It therefore, it can for attached
Plus magnet to not needing the second magnet in the case of produce magnetic force by the required attraction of the present invention.Set in primary optics
It is enough to put a strong magnet as far as possible, when shadow shield sufficiently closes to additional magnet, the magnet can paramagnetic screening
Magnetic field is induced in tabula rasa.
Other advantages with accompanying drawing by hereafter drawing.
It will be appreciated that foregoing and described further below feature can be applied not only in the combination that provides respectively, and
And can also be applied in other combinations or be used alone, all without departing from the scope of the present invention.
Brief description of the drawings
Embodiments of the invention are shown in the drawings and described in detail in the following description.In the accompanying drawings respectively to show
The form of meaning is shown：
Fig. 1 is the operation principle of the projection headlamp as the technical field of the present invention；
Fig. 2 is the first form of implementation of the projection headlamp by the present invention；
Fig. 3 is the shadow shield in high beam position and dipped headlight position；
Fig. 4 is second of form of implementation of the present invention.
Here, identical reference represents identical or at least function identical part respectively in each view.
Embodiment
Fig. 1 show in a schematic the projection headlamp 10 for motor vehicle, with light source 12, converge the light of light source 12
14 element 18, shadow shield 20 and projection optical device 24 with shadow shield arris 22.Described part 12,18,20 and 24
The light 14 that the constriction of element 18 is sent by light source 12 is disposed so as along the optical axis 26 of headlamp 10, and towards shading
Edges of boards rib 22 so that formed on shadow shield arris 22 by the first light distribution of the limited boundary of shadow shield arris 22.
Projection optical device 24 is set to and is disposed so as the projection optical device to regard the first light distribution as
Two light distributions 28 are projected in the front area of headlamp 10, wherein, shadow shield arris 22 in the second light distribution 28 as it is bright-
Secretly-line of demarcation 30 is projected between the brighter region 32 of the second light distribution 28 and dark region 34.
So projected herein so that shadow shield 20 reverses and reversally projects to the front area of motor vehicle sideways
In.Therefore, in it should meet the projection headlamp 10 of dipped headlight function, brighter region 32 is located at below horizon.Thus,
Dark region 34 is located at more than horizon, it is to avoid or at least alleviate oncoming vehicle is dazzled.Shadow shield arris 22 is usual
Symmetrically design and for example with the section declined from optical axis 26s to side into 15 ° of angles, the section is used as rising
Arris is projected in the second light distribution 28.Thus, it is possible to it is known that remote not towards the motor vehicle side of oncoming vehicle
Illuminate on ground.
Light source 12 is incandescent lamp or gas-discharge lamp in the first construction.In such configuration, the optics of light is collected
Element 18 is preferably many ellipsoid-reflectors, and it has the basic configuration of ellipsoid.Light source 12 is preferably provided at oval reflection
In one focus of device.Shadow shield arris 22 is provided with another focus of ellipsoidal reflector.Uniformly projected from light source 12
Light points to the second focus by reflector 18 so that produce the first light distribution of strong constriction herein, and first light distribution is by hiding
The limited boundary of tabula rasa arris 22.
In a kind of alternative construction, light source 12 is the array of semiconductor light source or semiconductor light source.Semiconductor light source, especially
It is that light emitting diode is typically half space radiation device, and therefore different from incandescent lamp and gas-discharge lamp, and they almost can be with
Regard the light source 12 of isotropism eradiation as.For this reason, for as the semiconductor light source of light source 12 use another convergence
The element 18 of light.
From unlike many ellipsoid-reflectors of more or less ambient light source 12, light is used as semiconductor light source
In the case of source 12, it is only necessary to the reflector 18 of half side encirclement, the reflector should also be as the basic configuration with ellipse.Correspondence
View to Fig. 1 is it means that the reflector 14 wherein shown in lower half can be omitted.
This half shelly reflector as converges optical element 18 is substituted, can be to be embodied as semiconductor light source or partly lead
The light source 12 of body array of source also uses the additional optical components being made up of optical material, its receive the light 14 of light source 12 and
By the refraction in light entrance face and light-emitting face and pass through the total internal reflection constriction that is carried out inside optical material to side
Boundary face on, and point to shadow shield arris 22.
Projection optical device 24 is convex lens in one kind construction, and it is in this way, so that the focus of its reflector side exists
It is located in the range of first light distribution on shadow shield arris 22.Then shadow shield arris 22 is used as obvious bright-dark-line of demarcation 30
It is projected in the second light distribution 28 in motor vehicle front end region.
Fig. 2 shows the first construction of the projection headlamp 10 by the present invention.Cartesian coordinate system represents projection module
Installation site when using according to regulations in a motor vehicle, wherein, X-axis points to radiation direction or travel direction.Y-axis is parallel to machine
The transverse axis of motor-car, and z-axis represents the longitudinal axis of motor vehicle.
In the first construction, gas-discharge lamp includes glass bulb and igniter.Projection optical device 24 is by lens
Support 36 is clamped.Lens carrier 36 is seen along travel direction in the leading edge 38 for being fixed on reflector 18.The leading edge 38 of reflector 18
It can be formed by support, reflector 18 is fixed on the support.
Shadow shield 20 is provided with projection optical device 24 and the support of reflector 18.In fig. 2, shadow shield 20 is shown as two
The individual adjusting position in following explanation.Regulation driver 40 is arranged on the lower section of projection module, and is fixedly connected with support 36.
Adjusting driver 40 has moving element, and the moving element is coupled with shadow shield 20.
Regulation driver 40 is preferably realised as electromagnetic attraction magnet, and it is set to, in electric current by attracting the coil of magnet
When make moving element, for example attract armature motion is to the position limited by backstop and is maintained on the position.
It is unrelated with the construction for adjusting driver 40, it is preferred that each position distribution of shadow shield arris 22 passes through regulation
The final position of driver 40 is limited.Thus, especially the position in bright-dark-line of demarcation is stopped by adjusting the machinery of driver 40
Gear is limited, and this allows the accurate and repeatably position in adjusting brightness line of demarcation.In armature is simply attracted, its preferred tool
Have for the first backstop of outflow location and the second backstop for attracting armature inflow location.Inflow location is preferably equivalent to far
Light lamp position put or shadow shield arris 22 the first adjusting position 42, and outflow location is preferably equivalent to dipped headlight position or shadow shield
Second adjusting position 44 of arris 22.
By known in the art, adjust driver 40 and tided in the mistake from dipped headlight position 44 to high beam position 42
The tension force of spring of pretension is further improved in journey.This has the advantage that, i.e. from dipped headlight position 44 to distance light lamp position
Put reset force in 42 transient process to be enhanced, in the case where regulation driver 40 does not produce movement in other directions, this is answered
Position power causes to automatically revert to dipped headlight position 44.This is favourable, because simple regulation driver 40 then can be used,
For example attract magnet, it can only apply its adjusting force in one direction.Then, reseting movement is driven by the reset force of elasticity
It is dynamic.
Another advantage is, when regulation driver 40 can not apply driving force, for example, may go out in regulation driver 40
During existing failure, elastic reset force to be returned to dipped headlight position 44.If being used for example as adjusting the attraction magnetic of driver 40
The power supply of body disappears, then is automatically moved to dipped headlight position 44 and avoids dazzling for oncoming vehicle.
Require that the switching between dipped headlight position 44 and high beam position 42 is very fast for oncoming vehicle, also
It is to say to realize within part second.Therefore need consumingly to be accelerated shadow shield 20 by means of reset force.In order to encounter instead hard
The shadow shield 20 of acceleration is slowed down before emitter 18, and buffer consequential, making an uproar of being heard as metal patter sound
Sound, shadow shield 20 has the first magnet 46.First magnet 46 forms magnet to 50 together with the second magnet 48.Second magnet 48
It is arranged in the leading edge 40 of reflector 18 so that it is accurate opposed in dipped headlight position 44 and the first magnet 46.In shown reality
Apply in example, Qiang Zhiyaoqiud for function, two magnets 46 and 48 are so oriented so that it is relative with magnetic pole of the same name.
But it is also contemplated that such implementation modification, wherein shadow shield 20 from dipped headlight position 44 to high beam position 42
And/or the technical problem of noiseless switching on the contrary is solved by two magnets 46 and 48, the magnet is with different magnetic pole phases
Pair and therefore apply attraction.
Shown first embodiment has two magnets to 50 in fig. 2, wherein, two magnets 48 are set in figure respectively
In the right leading edge or left front edge 40 of reflector 18.But it is also contemplated that, using only one magnet to 50 or more than two
Individual magnet is to 50.Magnet to 50 in leading edge 40 significant position obtained from the shape of shadow shield 20 and the shape of reflector 18
.Magnet is described to 50 function below according to Fig. 3.
Fig. 3 shows the high beam position 42 of projected light headlamp 10 in the sectional view A of partial cut away with side view.
The part important for understanding the present invention is illustrate only in Fig. 3, includes the leading edge 38 of reflector, shadow shield 20 and magnet are to 50.
The first magnet 46 is provided with the groove of shadow shield 20.First magnet 46 can be pressed into or bond in a groove.It is also contemplated that
, for example, the first magnet 46 is fixed on shadow shield 20 towards on the surface of leading edge 38 by bonding.Second magnet 48 is fixed
In the groove of the leading edge 38 of reflector 48.As it was previously stated, it is considered herein that fixed form be compression or bonding.Preferably use by
Powder compaction and the permanent magnet that may be sintered.
In the high beam position of shadow shield 20 (partial cross section A), the first magnet 46 and the second magnet 48 phase so remotely
To away from each other so that it can only mutually exert on small influence.If shadow shield 20 is when attracting magnet to disconnect for example due to pre-
The elastic reset power of tight spring drives and is accelerated, and shadow shield 20 rotates around the rotary shaft 52 perpendicular to drawing.Therefore the
One magnet 46 is close to the second magnet 48.This is represented close to the arrow represented in figure 3 by using reference 54.Magnet 46 and 48
Its magnetic pole of the same name is disposed so as to put relatively.As the spacing between the first magnet 46 and the second magnet 48 reduces, row
Denounce the ground increase of magnetic force F hypergeometric example.The cube of magnetic force and the distance between magnet is inversely proportional.Because the magnetic force F repelled effect
The direction of motion 54 of direction and shadow shield 20 is on the contrary, shadow shield 20 is slowed down by magnetic force F.Only slow down smaller first, but due to
Magnetic force increases as the spacing of shadow shield 20 and dipped headlight position 44 reduces and constantly on the non-linear of distance.Thus, effectively
Reduce the power collided on reflector 18 or support and efficiently reduce impact noise.
Partial cross section B shows the shadow shield 20 in dipped headlight position 44.Quantity and/or energy by magnet to 50
Density can coordinate kinetic energy of the repulsion magnetic force F so with the shadow shield 20 of acceleration so that produce magnetic force F in dipped headlight position 44
Dynamic balance between the reset force of regulation driver 40.Due to its inertia, then shadow shield 20 is enclosed with the amplitude being gradually reduced
Swung around dipped headlight position 44 until static.
Partial cross section C shows the magnet in dipped headlight position 44 to 50 with zoomed-in view.If here, so determined
Spacing between magnet 46 and 48 so that it is crossing the row that its final position is passed through to dipped headlight position 44 more than shadow shield 20
Journey, then collision of the shadow shield 20 on reflector 18 is able to prevent and realize high beam position 42 and dipped headlight position completely
Almost muting switching between 44.
Fig. 4 shows another embodiment of the headlamp 10 by the present invention.The He of reflector 18 is shown in partial cross section A
Shadow shield 20 in high beam position 42, being preferably made up in this embodiment of paramagnetic material.That is, shading sheet material
Material has magnetic when being placed in magnetic field.
In second of embodiment, projection headlamp 10, which has, sees the right side that is arranged on reflector 18 along radiation direction
Magnet is to 50.In opposite side, the left side seen along radiation direction is provided with the 3rd magnet 56 in leading edge 38.In partial cross section B
In, shadow shield 20 is located in dipped headlight position 44.
Section C in top view shows the shadow shield 20 in dipped headlight position 44.Shown in the C of section is to adjust
A part for driver 40 is saved, it includes attracting armature 58 and back-moving spring 60.In this embodiment, back-moving spring 60 is designed as
Butterfly spring.Rotary shaft 52 is provided with inside the bung flange of butterfly spring.Magnet is to the 50, including first magnet 46 and the second magnet
48, the left side of shadow shield 20 is located in the C of section.3rd magnet 56 is arranged on the right in figure.Project the reflection of headlamp 10
Device 18 and other parts are omitted for clarity.
The operation principle of shown embodiment is as described below in Fig. 4：Attract armature 58, the reset bullet of pretension by unclamping
Spring 60 accelerates shadow shield 20.Shadow shield 20 rotates to dipped headlight position 44 around rotary shaft 50.As described with reference to Figure 3, due to magnetic
Body is decelerated to the 50 magnetic force F repelled, shadow shield 20.3rd magnet 56 is disposed so as the suction produced by the 3rd magnet
The direction of motion for drawing magnetic force perpendicular to shadow shield 20 is acted on.The attraction magnetic force F of 3rd magnet 56 by reference be 62 arrow
Head is represented.When shadow shield 20 enters in the magnetic field of the 3rd magnet, the magnetic field of the 3rd magnet 56 causes the paramagnetism in shadow shield 20
In material, basic magnet, that is, material atom, lewis' acid correspond to the 3rd magnet 56 field orientation.Therefore, hide
The paramagnetic material of tabula rasa 20 regards magnet as at the moment, and the magnet forms additional magnet to 63 together with the 3rd magnet 56.
The swing that shadow shield 20 surrounds dipped headlight position 44 is substantially buffered by the attraction 62 of the 3rd magnet 56.Shadow shield 20 and the 3rd
Spacing 64 between magnet 56 ensures contact is not present between shadow shield and the 3rd magnet 56, and therefore prevents in collision
The noise of generation.
It is readily apparent that lateral action on shadow shield 20, the 3rd magnet 56 apply attraction 62 cause rotation
Pressure in the bearing of rotating shaft 52.Resulting lateral static friction improves the positional stability of shadow shield 20.In addition, a side
The attraction magnetic force 62 that face is acted on along rotary shaft 52 prevents the moving and hence in so that in shading along rotary shaft 52 of shadow shield 20
Plate 20 along rotary shaft 52 position when tolerance it is minimum.
It is apparent that for the shadow shield 20 not being made up of magnetizable material, substituting the 3rd magnet 56 must arrange attached
Plus magnet to 63, its magnet 48 of the first magnet 46 and second is relative with different magnetic poles, therefore the attraction magnetic required for producing
Power 62.
Claims (13)
1. a kind of projection light module (10), with light source (12), the light beam of the light source converges to first by primary optics (18)
In light distribution, first light distribution is located in the shading plane of projection light module (10)；With with image forming optics (24), it is somebody's turn to do
Image forming optics are set to, the second light that the first light distribution is projected in the front area of projection light module (10) point
Cloth；And with shadow shield (20) and regulation driver (40), the optical effect side that the shading plane passes through the shadow shield
The position restriction of edge, the regulation driver is set to, by shadow shield (20) in the first adjusting position (42) and the second regulation position
Put the optical effect arris (22) of the regulation motor adjustment shadow shield (20) between (44)；Characterized in that, the projection optical mode
Block (10) has the brake apparatus of magnetic, and the brake apparatus is set to, in the shadow shield (20) close to the first adjusting position (42)
And/or pass through first adjusting position (42) and/or described during the second adjusting position (44) or in the shadow shield (20)
Delay the regulation campaign of the shadow shield (20) during the second adjusting position (44).
2. projection light module (10) according to claim 1, it is characterised in that the brake apparatus has at least one magnetic
Body is to (50), and the magnet is to including two mutually exclusive magnets (46,48).
3. projection light module (10) according to claim 2, it is characterised in that so select the magnet to the energy of (50)
Metric density and/or quantity so that magnetic force (F) is formed on the dipped headlight position (44) of shadow shield (20) flat between reset force
Weighing apparatus.
4. projection light module (10) according to claim 2, it is characterised in that magnet to first magnet (46) of (50) and
Second magnet (48) is arranged with a spacing relative to each other in dipped headlight position (44).
5. the projection light module (10) according to one of prostatitis claim, it is characterised in that the regulation driver (40)
Including attracting armature (58) and back-moving spring (60).
6. projection light module (10) according to claim 2, it is characterised in that first magnet of the magnet to (50)
(46) it is arranged in the leading edge of primary optics (18) (38), and magnet is arranged on shadow shield to second magnet (48) of (50)
(20) on.
7. the projection light module (10) according to one of Claims 1-4, it is characterised in that in shadow shield (20) and/or master
Optics (18) is provided with the groove for being used for accommodating magnet (46,48).
8. projection light module (10) according to claim 2, it is characterised in that the magnet includes at least one to (50)
Permanent magnet.
9. projection light module (10) according to claim 8, it is characterised in that the permanent magnet is by compressing and/or burning
Knot is made.
10. projection light module (10) according to claim 8 or claim 9, it is characterised in that the material of permanent magnet is according to projected light
The temperature that module (10) occurs when being run by regulation on shadow shield (20) is selected.
11. the projection light module (10) according to one of Claims 1-4, it is characterised in that the projection light module has extremely
Lack an additional magnet to (63), wherein, the additional magnet has the magnetic force (F) attracted to (63), and its action direction hangs down
The straight action direction in the inertia force occurred when shadow shield (20) is adjusted and moved.
12. projection light module (10) according to claim 11, it is characterised in that first magnet of the additional magnet to (63)
(46) arranged relative to each other with a spacing (64) in dipped headlight position (44) with the second magnet (48).
13. the projection light module (10) according to one of Claims 1-4, it is characterised in that the shadow shield (20) is by suitable
The material of magnetic is made.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202012003108.2 | 2012-03-28 | ||
| DE2020120031082 | 2012-03-28 | ||
| DE202012003108U DE202012003108U1 (en) | 2012-03-28 | 2012-03-28 | Projection light module with an adjustable aperture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103363449A CN103363449A (en) | 2013-10-23 |
| CN103363449B true CN103363449B (en) | 2017-07-28 |
Family
ID=47751620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310103242.9A Expired - Fee Related CN103363449B (en) | 2012-03-28 | 2013-03-28 | Projection light module with adjustable shadow shield |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103363449B (en) |
| DE (1) | DE202012003108U1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3023602B1 (en) | 2014-07-09 | 2016-08-05 | Aml Systems | CUTTING MECHANISM COMPRISING A CARRIER BAR OF A PERMANENT MAGNET. |
| KR101673708B1 (en) | 2014-12-05 | 2016-11-07 | 현대자동차주식회사 | Shield drive device for head lamp |
| CN104501060B (en) * | 2014-12-24 | 2017-01-18 | 芜湖市汽车产业技术研究院有限公司 | Signal lamp derived from front fog lamp of automobile |
| FR3034842B1 (en) * | 2015-04-07 | 2018-04-20 | Valeo Vision | DEVICE FOR HOLDING IN THE POSITION OF A MOTOR VEHICLE EQUIPMENT PIECE IN RELATION TO A STRUCTURAL ELEMENT OF SAID VEHICLE |
| US10180227B2 (en) * | 2015-09-24 | 2019-01-15 | Hyundai Motor Company | Apparatus for driving headlamp shield |
| CN109752816B (en) * | 2017-11-01 | 2021-02-26 | 深圳光峰科技股份有限公司 | Optical module and optical apparatus |
| CN217843594U (en) * | 2021-08-30 | 2022-11-18 | 广州市浩洋电子股份有限公司 | Stage lamp with camera lens buffer function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1455133A1 (en) * | 2003-03-03 | 2004-09-08 | Valeo Vision | Vehicle headlamp comprising a movable shade equipped with locking means |
| FR2897415B1 (en) * | 2006-02-14 | 2008-04-11 | Valeo Vision Sa | LIGHTING PROJECTOR FOR MOTOR VEHICLES. |
| CN201425238Y (en) * | 2009-05-12 | 2010-03-17 | 常州市飞拓模塑有限公司 | Projection-type two-light lens headlamp |
| CN201434301Y (en) * | 2009-07-31 | 2010-03-31 | 张方涛 | Bifocal lens lamp with function of automatically switching high/low beam |
| DE102009032456A1 (en) * | 2009-07-09 | 2011-01-13 | Automotive Lighting Reutlingen Gmbh | Projection module for motor vehicle headlight, has lens carrier connected to round part with closure and deformed to round part, where processing of lens carrier rips one-piece from flat sheet metal |
-
2012
- 2012-03-28 DE DE202012003108U patent/DE202012003108U1/en not_active Expired - Lifetime
-
2013
- 2013-03-28 CN CN201310103242.9A patent/CN103363449B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1455133A1 (en) * | 2003-03-03 | 2004-09-08 | Valeo Vision | Vehicle headlamp comprising a movable shade equipped with locking means |
| FR2897415B1 (en) * | 2006-02-14 | 2008-04-11 | Valeo Vision Sa | LIGHTING PROJECTOR FOR MOTOR VEHICLES. |
| CN201425238Y (en) * | 2009-05-12 | 2010-03-17 | 常州市飞拓模塑有限公司 | Projection-type two-light lens headlamp |
| DE102009032456A1 (en) * | 2009-07-09 | 2011-01-13 | Automotive Lighting Reutlingen Gmbh | Projection module for motor vehicle headlight, has lens carrier connected to round part with closure and deformed to round part, where processing of lens carrier rips one-piece from flat sheet metal |
| CN201434301Y (en) * | 2009-07-31 | 2010-03-31 | 张方涛 | Bifocal lens lamp with function of automatically switching high/low beam |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202012003108U1 (en) | 2013-01-29 |
| CN103363449A (en) | 2013-10-23 |
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