WO2017125681A1 - Projecteur pour véhicule automobile à surface de coupure mobile réduite - Google Patents
Projecteur pour véhicule automobile à surface de coupure mobile réduite Download PDFInfo
- Publication number
- WO2017125681A1 WO2017125681A1 PCT/FR2017/050106 FR2017050106W WO2017125681A1 WO 2017125681 A1 WO2017125681 A1 WO 2017125681A1 FR 2017050106 W FR2017050106 W FR 2017050106W WO 2017125681 A1 WO2017125681 A1 WO 2017125681A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cut
- bar
- opening
- protective cover
- shutter
- Prior art date
Links
Classifications
-
- 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
-
- 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
- B60Q1/076—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 electrical means including means to transmit the movements, e.g. shafts or joints
-
- 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
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
-
- 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
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
-
- 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
- F21S41/686—Blades, i.e. screens moving in a vertical plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/10—Protection of lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
- F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
Definitions
- the field of the present invention is that of the light projectors and, more particularly, that of projectors for a motor vehicle.
- Motor vehicle headlamps generally include a light source that projects light onto a reflector. The light is then reflected on a lens to be reversed and returned as a light beam outside the vehicle.
- the projectors also comprise a cut-off mechanism making it possible to mask or not a portion of the reflected beam, as well as means for controlling the shape of the beam to adapt it to the driving circumstances.
- the cut-off bar is electrically actuated to move, on command, between at least two angular positions in which it more or less obscures the light beam.
- these two positions are a first angular position, in which the cutoff bar obscures part of the light beam in order to limit the range of the headlamp to that of the dipped headlamps so as not to dazzle the other drivers traveling in the opposite direction, and a second angular position, in which it does not obscure the light beam, the range of the projector then corresponding to that of high beam.
- multifunctional projectors in which the cutoff bar can adopt more than two angular positions to selectively obscure the light beam.
- the devices of the prior art which control the position of the cut-off bar generally consist of an actuating motor associated with a sensor of the position of the cut-off bar or a stop which defines the rest position of the bar cut.
- this rest position is associated with the code position, in order to avoid glare of the drivers coming in the opposite direction in the event of a failure of the device for actuating the bar.
- the reminder on the stop position or on the extreme position is generally provided by a return spring.
- the cut-off bar is electrically actuated by an actuator comprising an electric motor.
- an electromagnet which exerts, against the return spring, a force of attraction on a moving element connected to the cutoff bar.
- Such a cut-off mechanism is able to implement ADB (Adaptive Driving Beam) beam control functions.
- ADB Adaptive Driving Beam
- Such an ADB function that makes it possible to select different types of beams offers a significant advantage to the driver of the motor vehicle.
- the cut-off mechanisms intended to implement such an ADB function require expensive technologies, such as actuation by a stepper motor, a position detector sensor, etc.
- the actuating motor as described above is generally relatively expensive.
- the object of the present invention is to provide a headlamp for a motor vehicle which does not have the drawbacks of the prior art and in particular which, while making it possible to implement the aforementioned functions (bi-function or multi-function) via a cut-off mechanism. , presents a reduced cost.
- the invention relates to a cutting mechanism for a motor vehicle headlamp, said headlamp comprising at least:
- an armature provided with a beam-passing opening, said opening being closable on a shut-off zone;
- a cut-off mechanism comprising a moving assembly and at least one actuating motor, the moving assembly comprising a moving assembly and a cut-off bar provided with a cutting blade, said cut-off bar being movable under the action of actuating motor via the moving element between at least one shut-off position, in which the shut-off blade closes partially said opening at said fixed protective cover, and a retracted position, wherein the cutting blade releases said opening.
- said fixed protective cover comprises at least one fixed auxiliary sealing plate, integral with the latter, and said shutter plate and said cutoff blade are configured so as to cooperate together to form a surface of shutter in the shutter position of the cutoff bar, said shutter surface corresponding to said shutter zone of which at least a first part is closed only by the cutting blade and at least a second part of which is closed only by the shutter plate.
- the shutter plate limits the size of the surface that must close the cutting blade. It is thus able to reduce the size of the cutting blade, which leads to a reduction in its mass. Thanks to this mass reduction of the cutting blade and therefore of the cut-off bar, the mass to be displaced by the actuating motor is reduced so that a reduced-cost actuation motor can be used, which allows to remedy the aforementioned drawback.
- such a low-cost actuation motor has, generally, other advantages such as reduced space in particular.
- the protective cover which is, in general, already present on the projector, to implement a thermal protection function, which reduces the cost.
- the shutter plate can thus also participate in this thermal protection function.
- said closure plate is arranged to define a lower edge of the opening.
- said protective cover and said closure plate are made in one and the same piece, which facilitates in particular its manufacture and the embodiment of the invention, and reduces the cost.
- the closure plate has one of the following forms:
- the cutting blade is a substantially rectangular elongate blade provided with at least one cutout, said cutout being positioned on the cutoff blade so as to be fed, in the closed position, into a at least a portion of said second portion of the closure zone.
- the cutoff mechanism is configured to be able to bring the cutoff bar, in said retracted position and in said closed position, in which the opening is closed over said shutter zone, and furthermore in at least one partial closure position, wherein the opening is closed on a partial closure zone, less than said closed area.
- the present invention can be applied to different types of projectors, and in particular to projectors comprising various conventional types of cut-off mechanism.
- the cutoff mechanism of the projector is configured to move the cutoff bar, by rotation, about an axis of rotation positioned in a general plane of the protective cover.
- the projector cut-off mechanism is configured to move the cut-off bar, by rotation, about an axis of rotation positioned orthogonal to a general plane of the protective cover.
- FIG. 1 is a perspective view of a motor vehicle headlight
- FIG. 2 is a perspective view of a portion of a projector, showing a cutting assembly according to a first embodiment of the invention
- the projector 1 of a motor vehicle configured to generate a light beam (shown schematically by an arrow F).
- the projector 1 generally comprises a frame of generally rectangular shape, specified below, which is arranged substantially parallel to a plane P.
- the plane P is orthogonal to an optical axis X of the light beam F.
- the armature 2 comprises an opening 3 which is preferably cut at its center, to let the light beam through, as shown in FIGS. 2 to 6.
- a light source generating the light beam and a reflector which directs this light beam forward and towards a lens which is installed towards the front of the projector 1.
- the projector 1 comprises, in addition to the lens, usual means of controlling the shape of the beam to adapt it to the circumstances of driving the vehicle.
- the front and rear terms are defined with respect to the direction of emission of the light beam F, that is to say with respect to the direction of the arrow E in FIG. 1, and the terms low, high and vertical are defined relative to the position of the projector on the vehicle.
- a cutoff mechanism 4 On the frame 2 is fixed a cutoff mechanism 4 whose function is to close, more or less, the light beam depending on the vehicle traffic conditions.
- the armature 2 is provided with the opening 3 beam passage, and this opening 3 can be closed on a so-called shutter area.
- the cutoff mechanism 4 is disposed between the reflector and the lens, not shown.
- the cut-off mechanism 4 makes it possible to more or less close the light beam, in response to a command from the user of the vehicle automotive or automatic control, to offer different ways of lighting the road.
- This frame 2 comprises a fixed protective cover 5, which delimits the opening 3 on the edge 6 of the bottom.
- the protective cover 5 has a thermal protection function against the heat generated by the light source. Thus arranged, it delimits on the spotlight part of the opening 3 at the level of the frame 2.
- the cut-off mechanism 4 comprises a moving assembly 8 and an actuating motor 9.
- the moving assembly 8 comprises a moving assembly 10 and a cut-off bar 1 1 provided with a cutting blade 12, as represented in particular in the figures 5 and 6.
- the cut-off bar 1 1 is movable, in the usual way, under the action of the actuating motor 9 via the moving element 10.
- cutting blade 12 is meant the portion (or blade) of the cut-off bar 1 1 which is intended to close the beam.
- the cut-off bar 1 1 is moved to modulate the shape of the beam F at the output of the projector 1.
- This cut-off bar 11, which is moved by the actuating motor 9, is rotatable about an axis of rotation L1 (FIGS. 3 and 4) or L2 (FIGS. 5 and 6) in the plane P which is orthogonal to the X axis of the light beam F.
- the cut-off bar 1 1 is movable under the action of the actuating motor 9 between at least two positions, and in particular between:
- a shutter position C1 (FIGS. 2, 3 and 5), in which the cut-off blade 12 partially closes off said opening 3 above said fixed protective cover 5;
- a retracted position C2 (FIGS. 4 and 6), in which the cutting blade 12 releases the opening 3.
- the actuating motor 9 thus allows the cutoff bar 1 1 to be positioned in several positions, in particular in the two aforementioned positions, to more or less close the light beam.
- the actuating motor 9 for actuating the cut-off bar 11 comprises an electromagnet (not shown).
- This electromagnet can comprise a coil, and a ferromagnetic fixed core, substantially cylindrical, which is placed in the center of this coil, along its axis of symmetry.
- the cut-off bar 1 1 is retracted, that is to say it is inclined towards the front, as illustrated by an arrow A1 in FIG. of the position of Figures 2 and 3.
- the cut bar 1 1 thus passes the light beam.
- the cut-off bar 1 1 is raised, and it cuts the beam on a larger surface than would the single protective cover 5. fixed. After its reversal by the lens, the light beam is then oriented downwards, which avoids dazzle the drivers of oncoming vehicles.
- the protective cover 5 comprises at least one fixed closure plate 13, which is integral with the latter.
- the shutter plate 13 is arranged on the vertical side of the protective cover 5 delimiting the opening 3, that is to say at the top of the protective cover 5 of FIGS. 2 to 6.
- the shutter plate 13 of the fixed protective cover 5 and the cut-off blade 12 of the cut-off bar 11 are configured so as to cooperate together, to form together a closure surface in the shutter position C1 ( Figures 2, 3 and 5) of the cut-off bar 1 1.
- This obturation surface thus obtained corresponds, according to the invention, to the closing zone which must be closed in the closed position C1.
- this sealing surface at least a first part is closed only by the cutting blade 12 and at least a second part is closed only by the closure plate 13.
- the cut-off mechanism 4 and the protective cover 5 provided with the shutter plate 13 form a so-called cut-off assembly 15.
- the closure plate 13 the size of the surface to be closed off by the cutting blade 12 is limited.
- the size of the cut-off blade 12 is thus reduced, which results in a reduction in its mass. Thanks to this mass reduction of the cut-off blade 1 2 and thus of the cut-off bar 1 1, the mass to be displaced by the actuating motor 9 is reduced so that an actuating motor 9 can be used. at reduced cost.
- Such a low-cost actuation motor 9 also has other advantages such as reduced space in particular.
- the protective cover 5 and the shutter plate 1 3 are made in one and the same piece, which in particular makes it easier to manufacture and reduce the cost.
- the protective cover 5 provided with the shutter plate 1 3, which is already present on the projector, but for another function , ie for a thermal protection function.
- the shutter plate 1 3 can thus also participate in this thermal protection function, and thus performs a dual function:
- the shutter plate 1 3 may have different geometric shapes.
- FIGS. 2 to 6 a generally rectangular shape, as represented in FIGS. 2 to 6; or
- the cut-off blade 1 2 is a substantially rectangular elongate blade provided with at least one cutout 14, as shown in FIGS. 5 and 6.
- This cutout (or absence of material) 14, for example rectangular, is positioned on the cut-off blade 1 2 so as to be brought, in the closed position, in superposition of the part of the closing zone closed by the shutter plate 1 3.
- this cutout 14 we reduce the size of the cutting blade 12, and therefore its mass.
- the clipping mechanism 4 is of the bi-function type. It is then configured to be able to bring the breaking bar 1 1, in one or the other of the two following positions:
- the cutoff mechanism 4 may be multifunction type. In this case, it is configured to bring the cutoff bar 1 1, in addition to said retracted position C2 and said shutter position C1, in one or more partial shutter positions, in each of which the opening is closed. on a corresponding partial shutter area, less than said shutter area (closed in the shutter position C1). Such a partial closure position is obtained by an angular position of the cut-off bar 1 1 which is situated between the extreme angular positions of the positions C1 and C2.
- the present invention can be applied to different types of projectors, and in particular to projectors comprising various conventional types of cut-off mechanism.
- the cut-off mechanism 4 of the projector 1 is configured to move the cut-off bar 1 1, by rotation, around the axis of rotation L1, as illustrated in Figure 2 by the arrow A1 for moving the shutter position C1 in the retracted position C2.
- the axis of rotation L1 is positioned in the general plane P of the opening 3 and thus of the protective cap 5, as shown in FIGS. 3 and 4.
- the cut-off mechanism 4 of the headlamp I is configured to move the cut bar 1 1, by rotation, about an axis of rotation L2, as shown in Figure 5 by an arrow A2 for the displacement of the shutter position C1 in the retracted position C2.
- the axis of rotation L2 is positioned orthogonally to the general plane P.
- the cut-off bar 1 1 is raised, and it cuts the beam on a larger surface area than the only protective cover 5 provided with the blanking plate. 13. After being tilted by the lens, the light beam is then directed downwards, which avoids dazzling the drivers of oncoming vehicles.
- the cutoff mechanism 4 is controlled by a manual control of the user of the motor vehicle or automatic control. During such a command, the cut-off bar 1 1 is movable under the action of the actuating motor 9 via the moving element 10. The cut-off mechanism 4 is configured to bring the cut-off bar 1 1 into the minus one or the other of the two following positions, depending on the order made:
- control is carried out between a rest position and an activation position (of the actuating motor).
- the position of rest is associated with the code position, in order to avoid a glare of oncoming drivers in case of engine failure. actuating.
- the recall on this position is usually provided by a return spring (not shown).
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201780008484.6A CN108603643B (zh) | 2016-01-20 | 2017-01-19 | 用于机动车辆的具有减小的可移动截止表面的前照灯 |
US16/070,606 US11041599B2 (en) | 2016-01-20 | 2017-01-19 | Headlight with reduced movable cut-off surface for a motor vehicle |
EP17706842.6A EP3405719A1 (fr) | 2016-01-20 | 2017-01-19 | Projecteur pour véhicule automobile à surface de coupure mobile réduite |
JP2018537486A JP6820343B2 (ja) | 2016-01-20 | 2017-01-19 | 自動車用の低減された可動カットオフ表面を有するヘッドライト |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1650443 | 2016-01-20 | ||
FR1650443A FR3046835B1 (fr) | 2016-01-20 | 2016-01-20 | Projecteur pour vehicule automobile a surface de coupure mobile reduite. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017125681A1 true WO2017125681A1 (fr) | 2017-07-27 |
Family
ID=55542937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2017/050106 WO2017125681A1 (fr) | 2016-01-20 | 2017-01-19 | Projecteur pour véhicule automobile à surface de coupure mobile réduite |
Country Status (6)
Country | Link |
---|---|
US (1) | US11041599B2 (fr) |
EP (1) | EP3405719A1 (fr) |
JP (1) | JP6820343B2 (fr) |
CN (1) | CN108603643B (fr) |
FR (1) | FR3046835B1 (fr) |
WO (1) | WO2017125681A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0294589A2 (fr) * | 1987-06-12 | 1988-12-14 | Robert Bosch Gmbh | Phare-code |
DE19708111A1 (de) * | 1997-02-28 | 1998-09-03 | Hella Kg Hueck & Co | Fernbetätigbares Einstellsystem |
US20070147061A1 (en) * | 2005-12-27 | 2007-06-28 | China Technology Co., Ltd. | Light beam adjusting device for vehicle |
EP2062775A1 (fr) * | 2007-11-22 | 2009-05-27 | Hella KGaA Hueck & Co. | Dispositif de phares de projection pour véhicules |
EP2966345A1 (fr) * | 2014-07-09 | 2016-01-13 | AML Systems | Mecanisme de coupure comportant une barrette porteuse d'un aimant permanent |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2664363B1 (fr) * | 1990-07-03 | 1992-12-31 | Valeo Vision | Projecteur a plusieurs fonctions, en particulier pour vehicule automobile, adapte a ameliorer l'eclairement d'elements de signalisation routiere. |
JP5454523B2 (ja) * | 2011-07-13 | 2014-03-26 | トヨタ自動車株式会社 | 車両配光制御装置 |
-
2016
- 2016-01-20 FR FR1650443A patent/FR3046835B1/fr active Active
-
2017
- 2017-01-19 WO PCT/FR2017/050106 patent/WO2017125681A1/fr active Application Filing
- 2017-01-19 CN CN201780008484.6A patent/CN108603643B/zh active Active
- 2017-01-19 JP JP2018537486A patent/JP6820343B2/ja active Active
- 2017-01-19 EP EP17706842.6A patent/EP3405719A1/fr not_active Withdrawn
- 2017-01-19 US US16/070,606 patent/US11041599B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0294589A2 (fr) * | 1987-06-12 | 1988-12-14 | Robert Bosch Gmbh | Phare-code |
DE19708111A1 (de) * | 1997-02-28 | 1998-09-03 | Hella Kg Hueck & Co | Fernbetätigbares Einstellsystem |
US20070147061A1 (en) * | 2005-12-27 | 2007-06-28 | China Technology Co., Ltd. | Light beam adjusting device for vehicle |
EP2062775A1 (fr) * | 2007-11-22 | 2009-05-27 | Hella KGaA Hueck & Co. | Dispositif de phares de projection pour véhicules |
EP2966345A1 (fr) * | 2014-07-09 | 2016-01-13 | AML Systems | Mecanisme de coupure comportant une barrette porteuse d'un aimant permanent |
Also Published As
Publication number | Publication date |
---|---|
US11041599B2 (en) | 2021-06-22 |
EP3405719A1 (fr) | 2018-11-28 |
FR3046835B1 (fr) | 2020-02-14 |
FR3046835A1 (fr) | 2017-07-21 |
CN108603643B (zh) | 2021-03-19 |
US20200217474A1 (en) | 2020-07-09 |
CN108603643A (zh) | 2018-09-28 |
JP6820343B2 (ja) | 2021-01-27 |
JP2019503054A (ja) | 2019-01-31 |
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