WO2013035798A1 - アクチュエーターおよび車輌用前照灯 - Google Patents
アクチュエーターおよび車輌用前照灯 Download PDFInfo
- Publication number
- WO2013035798A1 WO2013035798A1 PCT/JP2012/072772 JP2012072772W WO2013035798A1 WO 2013035798 A1 WO2013035798 A1 WO 2013035798A1 JP 2012072772 W JP2012072772 W JP 2012072772W WO 2013035798 A1 WO2013035798 A1 WO 2013035798A1
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- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- driven
- unit
- lamp
- actuator
- Prior art date
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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
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/076—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/08—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and oscillating motion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
- Y10T74/18792—Reciprocating or oscillating to or from alternating rotary including worm
Definitions
- the present invention relates to an actuator and a vehicle headlamp.
- a lamp unit having a light source and a reflector that reflects light emitted from the light source is arranged inside a lamp outer casing constituted by a cover and a lamp housing.
- the lamp unit is rotatably supported (tilted) by a support body such as a bracket, and is rotated by the driving force of the actuator (see, for example, Patent Document 1 and Patent Document 2).
- a support body such as a bracket
- a swivel shaft is supported by a bracket so that the swivel shaft can be rotated in a horizontal direction, and a shaft pressing member that prevents the swivel shaft from falling off the bracket is a bracket. Attached to the device is known (see, for example, Patent Document 3).
- a so-called leveling adjustment (leveling operation) is performed in which the lamp unit is rotated (tilted) in the vertical direction by an actuator to adjust the deviation of the optical axis that varies depending on the weight of the vehicle-mounted object. ) Is performed.
- a so-called swivel adjustment (swiveling operation) is performed in which the lamp unit is rotated in the left-right direction by the actuator to change the direction of the optical axis following the traveling direction of the vehicle.
- a pair of gear portions are provided on the left and right sides of the output gear, and rack members that are movable in the front-rear direction are engaged with the gear portions.
- the two rack members are moved in the same direction in the front-rear direction, the output gear is moved in the front-rear direction, and the lamp unit is turned up and down to perform the leveling operation. Further, the two rack members are moved in opposite directions synchronously in the front-rear direction, whereby the output gear is rotated, and the lamp unit is rotated in the left-right direction to perform a swivel operation.
- the vehicle headlamp actuator described in Patent Document 2 is provided with two drive units each having a worm and a shaft on the side and rear of the output gear.
- the worm located on the side is integrated with the shaft portion and can be moved in the front-rear direction, and the shaft portion located rearward is connected to a slide member that holds the output gear.
- the shaft portion located rearward is moved in the front-rear direction by the rotation of the worm located rearward of the output gear, so that the output gear and the slide member are moved together in the front-rear direction.
- the lamp unit is rotated in the vertical direction, and the leveling operation is performed.
- the worm and the gear portion located on the side are integrally moved in the front-rear direction.
- the output gear is rotated by the rotation of the worm located on the side, and the lamp unit is rotated in the left-right direction to perform the swivel operation.
- the first object of the present invention is to provide a technique capable of achieving both the miniaturization of the actuator and the vehicle headlamp and the simplification of the control operation.
- the initial position of the lamp unit is detected as a preparatory operation for adjusting the optical axis of the lamp unit.
- the lamp unit In the leveling operation, the lamp unit is rotated upward or downward so that a predetermined portion of the lamp unit or actuator is abutted against the stopper, and the abutted position is set as an initial position.
- the lamp unit In the swivel operation, the lamp unit is rotated leftward or rightward so that predetermined portions of the lamp unit and the actuator are abutted against the stopper, and the abutted position is set as an initial position.
- the lamp unit is rotated by a predetermined amount in the vertical direction or the horizontal direction, and a leveling operation or a swivel operation is performed.
- the lamp unit When the initial position is detected by rotating the lamp unit so that a predetermined portion is brought into contact with the stopper, the lamp unit is rotated to the respective rotation limits forward, backward, left or right. Therefore, it takes time to detect the initial position.
- the optical axis is greatly tilted and light is irradiated in an unnecessary direction, and there is a risk of generating dazzling light for the vehicle ahead or pedestrians.
- a second object of the present invention is to provide a technique capable of reducing the time required for detecting the initial position of the lamp unit and preventing the generation of dazzling light.
- the supported portion is formed in a substantially hemispherical shape and is pressed from above by the flat plate portion of the shaft pressing member.
- the lamp unit and the swivel shaft are integrally rotated due to vibration during traveling of the vehicle and inertia of the lamp unit. Therefore, if a projection is provided on the lamp unit and the projection is brought into contact with the bracket to prevent excessive rotation of the lamp unit, it is inevitable that the structure inside the lamp outer casing becomes complicated.
- a third object of the present invention is to provide a technology capable of restricting excessive rotation of the lamp unit and avoiding interference with peripheral components with a simple structure.
- a first aspect that the present invention can take is an actuator, An output shaft connected to the lamp unit, and a first driven portion, and a connecting member that is rotatable in a first direction with reference to the axis center of the output shaft; A second driven portion disposed on the first side of the rotation center coinciding with the axis center, and a follower disposed on the second side of the rotation center opposite to the first side; A driven member that has a portion and is rotatable with respect to the coupling member with reference to the rotation center; An action part engaged with the driven part; A first driving body that is engaged with the first driven portion and rotates the connecting member with respect to the driven member with respect to the axis center; A second driving body that is engaged with the second driven portion and rotates the driven member with respect to the connecting member; When the driven member is rotated by the second driving body, the action portion engaged with the driven portion linearly moves the rotation center in the second direction, and the connecting member is The second member is moved in the second direction together with
- a second aspect that the present invention can take is a vehicle headlamp, A lamp housing having an opening, and a lamp outer casing including a cover for closing the opening of the lamp housing; A lamp unit disposed inside the lamp outer casing and having a light source; An actuator for adjusting the irradiation direction of light emitted from the light source, The actuator is An output shaft portion connected to the lamp unit, and a first driven portion, and a connecting member that is rotatable in the left-right direction with respect to the axis center of the output shaft portion; A second driven portion disposed on the first side of the rotation center coinciding with the axis center, and a follower disposed on the second side of the rotation center opposite to the first side; A driven member that has a portion and is rotatable with respect to the coupling member with reference to the rotation center; An action part engaged with the driven part; A first driving body that is engaged with the first driven portion and rotates the connecting member with respect to the driven member with respect to the axi
- the connecting member is rotated by the driving force of the first driving body, and the connecting member is moved by the driving force of the second driving body. Both miniaturization and simplification of control operation can be achieved.
- the first driven portion includes a first gear portion that extends in an arc shape
- the second driven portion includes a second gear portion that extends in an arc shape
- the driven portion has an arc shape.
- a driven gear portion that extends, the action portion includes a rack portion
- the first drive body includes a first worm meshed with the first gear portion
- the second drive body includes: It is good also as a structure provided with the 2nd worm
- each part is not operated unnecessarily due to vibration or the like, and the operation reliability can be improved. Further, when the connecting member is rotated and moved, the first driving body and the second driving body are not moved in the second (front-rear) direction, respectively, so that the size reduction in the second (front-rear) direction can be achieved. .
- the rack portion, the first worm, and the second worm may be configured to extend in the second direction.
- the shaft further includes a shaft that movably supports the first worm in the second direction, and when the connecting member moves in the second direction, the first worm moves in the second direction with respect to the shaft. It is good also as a structure made to move.
- the connecting member is reliably moved in the second (front-rear) direction, and the operation reliability can be improved.
- a third aspect that the present invention can take is an actuator, A connecting unit having an output shaft connected to the lamp unit, wherein at least the output shaft is rotatable in the first direction and movable in the second direction; A first magnetic detection unit that detects a movement position of the coupling unit in the second direction by detecting a first boundary of the magnetic poles; A second magnetic detection unit that detects a rotation position of the coupling unit in the first direction by detecting a second boundary of the magnetic poles; The first boundary and the second boundary are provided in the connection unit.
- a fourth aspect that the present invention can take is a vehicle headlamp, A lamp housing having an opening, and a lamp outer casing including a cover for closing the opening of the lamp housing; A lamp unit disposed inside the lamp outer casing and having a light source; An actuator for adjusting the irradiation direction of light emitted from the light source, The actuator is A connecting unit having an output shaft connected to the lamp unit, wherein at least the output shaft is movable in the front-rear direction, and rotatable in the left-right direction; A first magnetic detection unit that detects a movement position of the connecting unit in the front-rear direction by detecting a first boundary of the magnetic poles; A second magnetic detection unit that detects a rotation position of the coupling unit in the left-right direction by detecting a second boundary of the magnetic poles; The first boundary and the second boundary are provided in the connection unit.
- the initial position related to the rotation operation and the movement operation of the lamp unit is detected based on the boundary between the magnetic poles.
- the first magnetic detection unit is disposed at a position facing the movement path in the second direction at the axis center of the output shaft unit.
- the movement position of the connected unit can be detected quickly and accurately.
- the first magnetic detection unit and the second magnetic detection unit may be arranged side by side in the first direction.
- the rotation position of the connecting member can be detected quickly and accurately.
- the detection unit having the first boundary and the second boundary may be mounted on the connection unit.
- a fifth aspect that the present invention can take is a vehicle headlamp, A lamp unit that emits light emitted from a light source forward and is rotatable at least in the left-right direction; A swivel shaft having a supported portion, attached to the lamp unit in a state of protruding upward, and serving as a fulcrum of rotation in the left-right direction; A bracket for rotatably supporting the supported portion in the left-right direction; A shaft holding member attached to the bracket and holding the swivel shaft; The supported portion is A pressed surface pressed from above by the shaft pressing member; An upper edge is continuous with the outer peripheral edge of the pressed surface, and a sliding surface that slides when the lamp unit rotates, An upper edge is continuous with an outer peripheral edge of the pressed surface, and has a regulated surface that comes into contact with the shaft pressing member when the swivel shaft is rotated more than a predetermined angle; The distance from the rotation center of the swivel shaft to the upper
- the bracket is formed of a resin material
- the supported portion is formed of a resin material
- the restrained surface is provided with a regulated protrusion that protrudes upward, has a regulating part into which the regulated protrusion is inserted, and a holding part that holds the swivel shaft from above is provided on the holding member. It is good also as composition which has.
- FIG. 6 is a perspective view showing a state where an actuator connecting unit is disassembled.
- FIG. 7 is a plan view showing a state of the actuator drive mechanism after the swivel operation. It is a top view which shows the state of the drive mechanism of the actuator before leveling operation
- FIG. 7 is a plan view showing a state of the actuator drive mechanism after the leveling operation.
- FIG. 10 is a diagram for explaining the operation of the actuator drive mechanism when the initial position of the leveling operation is detected.
- FIG. 10 is a diagram for explaining the operation of the actuator drive mechanism when the initial position of the swivel operation is detected.
- FIG. 1 is a longitudinal sectional view showing an internal structure of a vehicle headlamp 1 according to a first embodiment of the present invention.
- the vehicle headlamps 1 are respectively mounted on the left and right ends of the front end of the vehicle body.
- the vehicle headlamp 1 includes a lamp housing 2 having a concave portion opened forward, and a cover 3 that closes the opening surface of the lamp housing 2.
- the lamp housing 2 and the cover 3 constitute a lamp outer casing 4, and the inner space of the lamp outer casing 4 is formed as a lamp chamber 5.
- a mounting opening 2a penetrating in the front-rear direction At the rear end of the lamp housing 2, there is formed a mounting opening 2a penetrating in the front-rear direction.
- An arrangement opening 2 b penetrating vertically is formed at the lower end of the lamp housing 2.
- a bracket 6 is arranged in the lamp chamber 5.
- the bracket 6 is supported on the lamp housing 2 so as to be tiltable in the left-right direction and the up-down direction by an aiming adjusting mechanism (not shown).
- the bracket 6 includes a mounting portion 7 that faces in the vertical direction, a pair of column portions 8 that protrude upward from the left and right end portions of the mounting portion 7, and upper ends of the column portions 8.
- the suspension part 9 which connects between parts is provided.
- a support receiving portion 9 a is formed at the center of the hanging portion 9 in the left-right direction.
- the mounting portion 7 is formed with a mounting hole 7a penetrating vertically.
- a lamp unit 10 is disposed in the lamp chamber 5.
- the lamp unit 10 is supported by the bracket 6 so as to be rotatable in the vertical direction and the horizontal direction.
- the lamp unit 10 includes a reflector 11 that reflects light on the inner surface, a light source 12 held at the rear end of the reflector 11, a lens holder 13 attached to the front end of the reflector 11, and a front end of the lens holder 13. Projection lens 14 formed.
- the reflector 11 is formed in a bowl shape opened forward, and the inner surface is formed as a reflecting surface 11a.
- the light source 12 for example, a discharge lamp is used.
- a semiconductor light emitting element such as a light emitting diode (LED) may be used as the light source 12.
- the lens holder 13 is provided with a shade 13a, and the shade 13a is provided so as to protrude into the lamp unit 10.
- the shade 13 a has a function of shielding part of the light emitted from the light source 12.
- the lower end of the lamp unit 10 is provided with a connecting protrusion 15 protruding downward.
- the connecting protrusion 15 is formed with a connecting recess 15a that opens downward.
- a supported protrusion 16 is provided at the upper end of the lamp unit 10.
- the upper end portion of the supported protrusion 16 is provided as a substantially hemispherical sliding portion 16a convex downward.
- the sliding portion 16 a of the supported protrusion 16 is held by the sliding ring 17.
- the lamp unit 10 is suspended from the support receiving portion 9a of the hanging portion 9 through a sliding ring 17 in a rotatable state.
- the lamp unit 10 is slidable on the sliding ring 17 so that the lamp unit 10 can be pivoted in the vertical direction and the horizontal direction with respect to the bracket 6 with the sliding part 16a as a fulcrum. ing.
- a holding member 18 is attached to the hanging portion 9.
- the pressing member 18 prevents the lamp unit 10 from falling off the bracket 6.
- An extension 19 that shields a part of the lamp unit 10 is disposed on the front end side of the lamp chamber 5 (see FIG. 1).
- a back cover 20 that closes the mounting opening 2 a is attached to the rear end of the lamp housing 2.
- the attachment cover 21 is formed in a box shape opened upward.
- a discharge lamp lighting device 22 is mounted inside the mounting cover 21.
- the discharge lamp lighting device 22 is a device for lighting the light source 12, and has a lighting circuit therein.
- the discharge lamp lighting device 22 is connected to the light source 12 by a cable 22a.
- the cable 22 a is disposed so as to extend downward from the rear of the lamp unit 10.
- an actuator 23 is disposed below the lamp unit 10.
- the actuator 23 includes a case body 24.
- the case body 24 includes a box-shaped arrangement case 26 opened upward, a cover case 27 for closing the arrangement case 26 from above, and a base case 28 attached to the arrangement case 26 from below.
- FIG. 3 is a perspective view showing a state where the actuator 23 is disassembled
- FIG. 4 is a perspective view showing the actuator 23 with the cover case 27 removed.
- a plurality of locking projections 26a are provided on the outer peripheral surface of the arrangement case 26 so as to be spaced apart from each other in the circumferential direction.
- a pair of attached projections 26 b are provided at the upper end of the arrangement case 26 so as to project left and right.
- FIG. 5 is a perspective view showing the arrangement case 26.
- a mechanism arrangement recess 26c opened upward is formed in the front half of the arrangement case 26.
- a rack portion 26 d extending in the front-rear direction is provided on the inner surface of the left side surface portion of the arrangement case 26.
- the rack portion 26d is provided in the mechanism arrangement recess 26c.
- the rack portion 26d functions as an operation portion of the present invention that is engaged with a driven portion described later.
- a protruding arrangement portion 26e protruding upward is provided at the rear end side portion of the central portion of the arrangement case 26 in the left-right direction.
- the protruding arrangement part 26e is formed in a shape opened downward and rearward.
- the arrangement case 26 is provided with a pair of gear support projections 26f and a pair of motor attachment projections 26g on the rear side of the mechanism arrangement recess 26c.
- the gear support protrusion 26f and the motor attachment protrusion 26g are disposed on the left and right sides of the protruding arrangement portion 26e, and protrude upward from the left and right ends of the bottom surface.
- a pair of mounting recesses 26h are formed in the center of the arrangement case 26 in the left-right direction so as to be separated from each other in the front-rear direction.
- the mounting recesses 26h are respectively positioned at the front surface portion of the arrangement case 26 and the front end portion of the protruding arrangement portion 26e.
- a pair of bearing portions 26i protruding upward are provided at the right end portion of the mechanism arrangement recess 26c of the arrangement case 26 so as to be separated from each other in the front-rear direction.
- a pair of arrangement holes 26j penetrating vertically are formed on the bottom surface portion of the arrangement case 26 so as to be separated from each other in the left-right direction.
- a shallow arrangement recess 26k that is opened downward is formed on the lower surface side of the arrangement case 26.
- the cover case 27 is formed in a thin box shape opened downward.
- a plurality of locking pieces 27 a that protrude downward are provided on the outer peripheral surface of the cover case 27.
- a locking hole is formed in each locking piece 27a.
- the cover case 27 is provided with a pair of attached protrusions 27b protruding left and right. At a position near the front end of the cover case 27, an insertion hole 27c penetrating vertically is formed.
- the insertion hole 27c is formed in a shape that is long in the front-rear direction.
- the base case 28 has a closed surface portion 28a formed in a plate shape facing in the vertical direction, and a fitting protruding portion 28b protruding upward from a portion near the outer periphery of the closed surface portion 28a. is doing.
- the circuit board 29 is arranged in the arrangement recess 26k of the arrangement case 26.
- a predetermined circuit pattern (not shown) is formed on the circuit board 29.
- a plurality of electronic components 30 and connectors 31 are mounted on the circuit board 29. Some of the electronic components 30 and the connectors 31 are arranged in the protruding arrangement portion 26e.
- the first magnetic detection unit 32 and the second magnetic detection unit 33 are arranged at a position near the front end on the upper surface of the circuit board 29 so as to be separated from each other on the left and right.
- a Hall IC Integrated Circuit
- the actuator 23 includes a drive mechanism 25.
- the drive mechanism 25 includes a connection unit 34, a first drive body 35, and a second drive body 36.
- FIG. 7 is a perspective view showing a state in which the connecting unit 34 is disassembled.
- the connecting unit 34 has a structure in which a connecting member 37, a support member 38, and a driven member 39 are connected in order from the upper side (see also FIG. 3).
- the connecting member 37 includes a plate-like base surface portion 40 facing in the vertical direction, an output shaft portion 41 projecting upward from the center portion of the base surface portion 40, and an annular shape projecting downward from a portion near the outer periphery of the base surface portion 40.
- a portion 42 and a pair of attachment projections 43 projecting downward from the annular portion 42 are provided.
- the output shaft portion 41 includes a case-like connection base portion 41a that opens downward, and a pair of round shaft-shaped connection protrusion portions 41b that protrude left and right from the left and right side surfaces of the connection base portion 41a.
- a center axis of the output shaft portion 41 is an axis center 41 c that is a rotation axis of the connecting member 37.
- a first gear portion 42 a extending in the circumferential direction is provided on the left side of the annular portion 42.
- the first gear portion 42a functions as the first driven portion of the present invention.
- a pair of insertion holes 42 b extending in the laterally long circumferential direction are formed in the front and rear both surface portions of the annular portion 42.
- the pair of mounting protrusions 43 protrude downward from both front and rear surface portions of the annular portion 42, and have engaging protrusions 43a on the inner surface.
- the support member 38 includes a short substantially cylindrical base portion 44 whose axial direction is the vertical direction, an insertion shaft portion 45 protruding upward from the center portion of the base portion 44, and a lower end portion on the left side portion of the base portion 44. And a gear support 47 provided at the left end of the protrusion 46.
- the base portion 44 is provided with a support protrusion 44a that protrudes downward from the center portion on the lower surface (see FIG. 7). At a position near the outer periphery of the base portion 44, a pair of insertion recesses 44 b are formed apart from each other in the circumferential direction of the base portion 44. Each insertion recess 44b is formed in an arc shape in plan view.
- the base portion 44 is formed with guided holes 44c penetrating in the front-rear direction (see FIGS. 3 and 7).
- the gear support portion 47 includes a pair of support wall portions 47a provided to be separated from each other in the front-rear direction and a bridging portion 47b extending in the front-rear direction so as to connect the support wall portions 47a.
- Each support wall 47a is formed in a plate shape whose main surface faces in the front-rear direction, and has an insertion hole.
- the driven member 39 has a base surface portion 48 that has a circular shape with a circular outer shape, a first protrusion 49 that protrudes leftward from the base surface portion 48, and a second protrusion that protrudes rightward from the base surface portion 48. Projecting portion 50.
- a supported hole 48 a penetrating vertically is formed at the center of the base surface portion 48.
- a pair of insertion protrusions 48 b protruding upward are provided on the outer peripheral portion of the base surface portion 48 so as to be spaced apart from each other in the circumferential direction of the base surface portion 48.
- Each insertion protrusion 48b is formed in an arc shape in plan view. The length in the circumferential direction of each insertion protrusion 48b is shorter than the length in the circumferential direction of the insertion recess 44b of the corresponding support member 38.
- the central axis of the base surface portion 48 is a rotation center 48 c that is coincident with the axial center 41 c of the connecting member 37.
- a driven gear portion 49 a extending in the circumferential direction is provided on the left side of the first projecting portion 49.
- the driven gear portion 49a meshes with a rack portion 26d that functions as an engaging portion of the present invention provided in the arrangement case 26, and functions as a driven portion of the present invention.
- a second gear portion 50a extending in the circumferential direction is provided on the right side of the second protrusion 50.
- the second gear portion 50a functions as the second driven portion of the present invention.
- the driven gear portion 49a and the second gear portion 50a are arranged on concentric circles with the rotation center 48c as a reference.
- the insertion shaft portion 45 is inserted into the output shaft portion 41 from below, and the base portion 44 is inserted into the annular portion 42 from below and connected to the connecting member 37.
- the connection member 37 is rotatable with respect to the support member 38 with respect to the shaft center 41 c.
- the driven member 39 is slidably engaged by being inserted from below into the insertion recess 44b of the base portion 44 to which each insertion protrusion 48b of the base surface portion 48 corresponds. Further, the support protrusion 44 a of the base portion 44 is inserted into the supported hole 48 a of the base surface portion 48 from above and connected to the support member 38.
- the detection magnet 51 is attached to the attachment protrusion 43 of the connecting member 37.
- parts having the same shape and the same size are arranged in the front-rear direction, and are magnetized to the N pole and the S pole, respectively.
- the detection magnet 51 includes a first portion 52 formed in a vertically long and substantially rectangular shape, and a second portion 53 provided continuously on the right side of the first portion 52 and having an outer periphery formed in an arc shape. Have.
- a pair of engagement notches 52 a are formed on both front and rear edges of the first portion 52.
- the second portion 53 is provided with a pair of protrusions 53 a that protrude in the front-rear direction from both front and rear ends of the first portion 52.
- a non-interference hole 51a penetrating vertically is formed between the first portion 52 and the second portion 53. Interference between the magnetic field generated in the first portion 52 and the magnetic field generated in the second portion 53 is suppressed by the non-interference holes 51a.
- a portion where the N pole and the S pole are continuous in the first portion 52 is formed as a first boundary 52b, and a portion where the N pole and the S pole are continuous in the second portion 53 is formed as a second boundary 53b. Yes.
- the detection magnet 51 is attached to the driven member 39 by engaging the engagement protrusions 43a of the attachment protrusions 43 with the corresponding engagement notches 52a. At this time, the first boundary 52 b intersects the axial center 41 c of the connecting member 37. The detection magnet 51 is rotated integrally with the connecting member 37.
- the driven gear portion 49 a of the driven member 39 in the coupling unit 34 is meshed with a rack portion 26 d provided in the arrangement case 26.
- the round shaft-shaped guide member 54 is inserted into the guided hole 44 c of the support member 38 and the insertion hole 42 b of the connecting member 37. Both front and rear ends of the guide member 54 are inserted into the mounting recesses 26h of the arrangement case 26, respectively.
- the support member 38 is guided in the front-rear direction by the guide member 54 attached in this manner.
- the first driving body 35 includes a swivel motor 55, a first transmission gear 56, a first shaft 57, and a first worm 58.
- the swivel motor 55 includes a main body 55a and a drive gear 55b fixed to a motor shaft protruding upward from the main body 55a.
- the swivel motor 55 is attached to the left motor attachment protrusion 26g provided in the arrangement case 26.
- the first transmission gear 56 has a flat gear portion 56a positioned on the upper side and a worm portion 56b positioned on the lower side.
- the first transmission gear 56 is rotatably supported by a left gear support protrusion 26f provided on the arrangement case 26 via a support shaft 56c, and the flat gear portion 56a meshes with the drive gear 55b of the swivel motor 55. Has been.
- the first shaft 57 has a shaft portion 59 extending in the front-rear direction and a gear portion 60 provided at the rear end portion. On the outer peripheral surface of the shaft portion 59, three rotation prevention portions 59a are provided that are arranged at equal intervals in the circumferential direction and project in the radial direction.
- the gear portion 60 of the first shaft 57 is meshed with the worm portion 56 b of the first transmission gear 56.
- the first worm 58 has a shaft insertion hole 58a penetrating in the front-rear direction.
- the cross-sectional shape of the shaft insertion hole 58 a is the same as the cross-sectional shape of the first shaft 57.
- the first worm 58 is disposed between the support wall portions 47a provided on the gear support portion 47 of the support member 38, and the shaft portion 59 of the first shaft 57 is inserted into the support wall portion 47a and the shaft insertion hole 58a. Is inserted.
- the first worm 58 is arranged at the left end portion of the mechanism arrangement recess 26 c of the arrangement case 26. In a state where the shaft portion 59 is inserted into the shaft insertion hole 58 a of the first worm 58, the first worm 58 can be rotated integrally with the first shaft 57 and can be rotated with respect to the shaft portion 59. It is possible to move back and forth.
- the first worm 58 is meshed with the first gear portion 42 a of the connecting member 37.
- the driving force is applied to the driving gear portion 55b, the first transmission gear 56, the gear portion 60 of the first shaft 57, and the first worm 58.
- the first gear portion 42a is sent in a direction corresponding to the rotation direction of the swivel motor 55.
- the connecting member 37 is rotated with respect to the support member 38.
- the second driving body 36 includes a leveling motor 61, a second transmission gear 62, a second shaft 63, and a second worm 64.
- the leveling motor 61 includes a main body 61a and a drive gear 61b fixed to a motor shaft protruding upward from the main body 61a.
- the leveling motor 61 is attached to the right motor attachment protrusion 26g provided in the arrangement case 26.
- the second transmission gear 62 has a flat gear portion 62a positioned on the upper side and a worm portion 62b positioned on the lower side.
- the second transmission gear 62 is rotatably supported by a right gear support protrusion 26f provided on the arrangement case 26 via a support shaft 62c, and the flat gear portion 62a meshes with the drive gear 61b of the leveling motor 61. Has been.
- the second shaft 63 has a shaft portion 65 extending in the front-rear direction and a gear portion 66 provided at the rear end portion. On the outer peripheral surface of the shaft portion 65, there are provided three anti-rotation portions 65a that are arranged at equal intervals in the circumferential direction and project in the radial direction.
- the gear portion 66 of the second shaft 63 is meshed with the worm portion 62 b of the second transmission gear 62.
- the second worm 64 has a shaft insertion hole 64a penetrating in the front-rear direction.
- the cross-sectional shape of the shaft insertion hole 64 a is the same as the cross-sectional shape of the second shaft 63.
- the shaft portion 65 of the second shaft 63 is inserted into the shaft insertion hole 64a of the second worm 64.
- the shaft portion 65 is rotatably supported by a pair of bearing portions 26 i provided in the arrangement case 26.
- the second worm 64 is arranged at the right end portion of the mechanism arrangement recess 26 c of the arrangement case 26. In a state where the shaft portion 65 is inserted into the shaft insertion hole 64 a of the second worm 64, the second worm 64 can be rotated integrally with the second shaft 63.
- the second worm 64 is meshed with the second gear portion 50 a of the driven member 39.
- the driving force is applied to the driving gear portion 61b, the second transmission gear 62, the gear portion 66 of the second shaft 63, and the second worm 64.
- the second worm 64 is rotated.
- the second gear portion 50a is sent in a direction corresponding to the rotation direction of the leveling motor 61.
- the meshing position of the driven gear portion 49a of the driven member 39 with respect to the rack portion 26d is changed, and the driven member 39 is moved in the front-rear direction while rotating.
- the pair of insertion ridges 48b slide relative to the base portion 44 of the support member 38, and the support member 38 and the connecting member 37 are integrated into the front-rear direction. Move in the direction. At this time, the shaft center 41c of the connecting member 37 and the rotation center 48c of the supported member 39 are not displaced in the left-right direction but move linearly only in the front-rear direction.
- FIG. 6 is a longitudinal sectional view showing a state where the actuator 23 is assembled.
- the corresponding locking piece 27a of the cover case 27 is locked to each locking protrusion 26a of the positioning case 26, whereby the positioning case 26 and the cover case 27 are coupled.
- each attached projection 27b of the cover case 27 and the corresponding attached projection 26b of the arrangement case 26 are overlapped in the vertical direction (see FIG. 2).
- the base case 28 is coupled to the lower surface side of the placement case 26 by fitting the fitting protrusion 28b of the base case 28 into the placement recess 26k of the placement case 26.
- the base case 28 covers the circuit board 29 from below.
- the actuator 23 in a state in which the pair of attached protrusions 27b and the pair of attached protrusions 26b are overlapped in the vertical direction is attached to the attachment part 7 of the bracket 6 by a pair of attachment screws 100.
- the output shaft portion 41 protrudes upward from the attachment hole 7a.
- the output shaft 41 is connected to the lamp unit 10 by being inserted into a connecting recess 15 a formed in the connecting protrusion 15 of the lamp unit 10.
- the lamp unit 10 In a state where the output shaft portion 41 is connected to the lamp unit 10, the lamp unit 10 is rotated in the left-right direction with the supported protrusion 16 as a fulcrum as the output shaft portion 41 rotates in the horizontal direction. . Further, as the output shaft portion 41 moves in the front-rear direction, the lamp unit 10 is rotated in the vertical direction with respect to the pair of connection protrusions 41b with the supported protrusion 16 as a fulcrum.
- FIGS. the lamp unit 10 is not shown, and the operation of the drive mechanism 25 is shown as seen from above.
- the swivel operation is an operation of rotating the lamp unit 10 in the left-right direction in order to change the direction of the optical axis following the traveling direction of the vehicle. At this time, the lamp unit 10 is rotated in the left-right direction with the supported protrusion 16 as a fulcrum.
- the leveling operation is an operation of rotating the lamp unit 10 in the vertical direction in order to adjust the deviation of the optical axis that changes depending on the weight of the vehicle-mounted object. At this time, the lamp unit 10 is rotated in the vertical direction with the supported protrusion 16 as a fulcrum.
- the connecting member 37 in a state before the swivel operation is performed, the connecting member 37 is in a neutral position where the pair of connecting protrusions 41b included in the output shaft portion 41 are arranged on the left and right.
- the guide member 54 is inserted into the pair of insertion holes 42b included in the connection member 37.
- each insertion hole 42b is formed in a long shape on the left and right, the connection member 37 and the guide member 54 are rotated. Is avoided.
- the connecting member 37 in a state before the leveling operation is performed, the connecting member 37 is in a neutral position where the connecting protrusions 41b included in the output shaft portion 41 are arranged on the left and right.
- the connecting unit 34 is disposed at the center in the range of movement in the front-rear direction.
- the pair of insertion ridges 48b slide relative to the base portion 44 of the support member 38, and the support member 38 and the connecting member 37 are integrated into the front-rear direction. Move in the direction.
- the connecting unit 34 is guided in the front-rear direction by the guide member 54, and the first worm 58 is moved in the front-rear direction with respect to the shaft portion 59 of the first shaft 57.
- the lamp unit 10 When the initial position of the lamp unit 10 is detected, the lamp unit 10 is rotated by a predetermined amount in the vertical direction or the horizontal direction with reference to the detected initial position, and a leveling operation or a swivel operation is performed.
- the connecting unit 34 is arranged at the center in the front-rear direction (moving direction) or in the vicinity thereof.
- the leveling motor 61 moves the detection magnet 51 integrally with the connecting member 37 forward or backward by a minute distance, for example, about 1 mm to 2 mm.
- the change state of the magnetic field of the detection magnet 51 is detected by the first magnetic detection unit 32.
- the detection position of the first boundary 52b is detected as the initial position in the leveling operation of the connecting unit 34 and the lamp unit 10. Is done.
- the connecting member 37 When the first boundary 52b is not detected when the connecting member 37 is moved a minute distance forward or backward as described above, the connecting member 37 is in the reverse direction, for example, about 1 mm to 2 mm with respect to the neutral position. Moved to. At this time, when the first boundary 52b, which is the position where the polarity is switched, is detected by the first magnetic detection unit 32, the detection position of the first boundary 52b is the initial position in the leveling operation of the connecting unit 34 and the lamp unit 10. Detected as
- the connecting member 37 in the state before the swivel operation is started, the connecting member 37 is in a neutral position where the pair of connecting protrusions 41b provided in the output shaft portion 41 are arranged on the left and right or in the vicinity thereof. It is arranged at the position.
- the swivel motor 55 causes the detection magnet 51 to be integrated with the connecting member 37 at a minute angle, for example, about 1 ° to 2 ° left or right.
- the second magnetic detection unit 33 detects the change state of the magnetic field of the detection magnet 51 when the rotation is performed.
- the detection position of the second boundary 53b is detected as the initial position in the swivel operation of the connecting unit 34 and the lamp unit 10. Is done.
- the connecting member 37 is, for example, 1 ° to 2 ° with respect to the neutral position. Rotated in the opposite direction.
- the detection position of the second boundary 53b is the initial position in the swivel operation of the connecting unit 34 and the lamp unit 10. Detected as
- the detection magnet 51 includes a first portion 52 and a second portion 53 having different shapes. By forming the detection magnet 51 in such a shape, even when the detection magnet 51 is moved to the front and rear moving ends and the swivel operation is performed, as shown in FIGS. A first magnetic detection unit 32 and a second magnetic detection unit 33 are arranged to face each other below 51. Therefore, regardless of the position of the connecting unit 34, the initial position can be detected appropriately.
- the connecting member 37, the driven member 39, and the connecting member 37 are rotated to perform the swivel operation.
- the rotation of the connecting member 37 is performed by the driving force of the first driving body 35, and the movement of the connecting member 37 is performed by the driving force of the second driving body 36.
- the operation can be simplified.
- the first gear portion 42a provided as the first driven portion is engaged with the first worm 58, and the second gear portion 50a provided as the second driven portion is the first driven portion. 2 worms 64 are engaged.
- each part is not operated unnecessarily due to vibration or the like when the vehicle is running, and the reliability of the operation can be improved. Further, since the first driving body 35 and the second driving body 36 are not moved in the front-rear direction when the connecting member 37 is rotated and moved, the size in the front-rear direction can be reduced.
- These worms 64 are provided so as to extend in the front-rear direction. For this reason, size reduction in the left-right direction can be achieved.
- a first shaft 57 is provided on which the first worm 58 is slidably supported in the front-rear direction. Therefore, the meshing between the first gear portion 42a and the first worm 58 is not released during the leveling operation, and the operation reliability of the actuator 23 can be improved.
- a guide member 54 that guides the driven member 39 in the front-rear direction when the driven member 39 is rotated with respect to the connecting member 37 by the second driving body 36 is provided. For this reason, the connecting member 37 is reliably moved in the front-rear direction, and the operation reliability in the leveling operation can be improved.
- the second gear portion 50a and the driven gear portion 49a are used as the second driven portion and the driven portion of the present invention, respectively, and the second gear portion 50a and the driven gear portion 49a are respectively connected to the second gear portion 50a and the driven gear portion 49a.
- the worm 64 and the rack portion 26d are engaged with each other.
- the present invention is not limited to the configuration in which the second driven portion and the driven portion of the present invention are engaged by meshing.
- the second driven portion and the driven portion of the present invention may be configured to be engaged with the driving portion and the action portion of the present invention by frictional forces, respectively.
- the second driven portion and the driven portion of the present invention each have a pressed surface
- the drive portion and the action portion of the present invention have a pressing surface extending in the front-rear direction
- each pressing surface is respectively It is good also as a structure which is pressed and engaged with a to-be-pressed surface.
- the leveling operation is performed by moving the driven member in the front-rear direction while rotating between the pressing surfaces of the driving unit and the action unit by the operation of the driving unit.
- the first magnetic detection for detecting the position of the connecting member 37 in the front-rear direction by detecting the position of the first boundary 52b.
- a second magnetic detection unit 33 that detects the position of the connecting unit 34 in the horizontal direction by detecting the position of the second boundary 53b, and the first boundary 52b and the second boundary. 53 b is provided in the connecting unit 34.
- the first magnetic detection unit 32 is disposed at a position facing the movement path in the front-rear direction of the shaft center 41c of the output shaft 41. For this reason, the movement position of the connection unit 34 can be detected quickly and accurately.
- the second magnetic detection unit 33 is provided on the left or right side of the first detection unit 32. For this reason, the rotation position of the connecting member 37 can be detected quickly and accurately.
- the first boundary 52b and the second boundary 53b are provided in the detection magnet 51. For this reason, it is not necessary to separately provide two detection magnets in order to detect the initial positions before the start of the leveling operation and the swivel operation, and the number of parts of the actuator 23 can be reduced and the mechanism can be simplified. . *
- FIG. 16 is a longitudinal sectional view schematically showing the internal structure of the vehicle headlamp 101.
- the vehicle headlamps 101 are respectively mounted on the left and right ends of the front end of the vehicle body. *
- the vehicle headlamp 101 includes a lamp housing 102 in which a recess opened forward is formed, and a cover 103 that closes the opening 102 a of the lamp housing 102.
- the lamp housing 102 and the cover 103 constitute a lamp outer casing 104, and the inner space of the lamp outer casing 104 is formed as a lamp chamber 105.
- a back cover 106 that closes the mounting opening 102b is attached to the rear end of the lamp housing 102.
- a lamp unit 107 is disposed in the lamp chamber 105.
- the lamp unit 107 includes a reflector 108, a light source 109 held at the rear end of the reflector 108, a lens holder 110 positioned in front of the reflector 108, and a projection lens 111 held at the front end of the lens holder 110.
- the shade 108 is disposed between the reflector 108 and the lens holder 110.
- the reflector 108 is formed in a bowl shape opened forward, and the inner surface is formed as a reflecting surface 108a.
- the front end of the reflector 108 is attached to the rear surface of the shade 112.
- the reflector 108 has a function of reflecting the light emitted from the light source 109 toward the projection lens 111. *
- the light source 109 for example, a discharge lamp is used.
- a semiconductor light emitting element such as a light emitting diode (LED) may be used.
- the lens holder 110 is formed in an annular shape penetrating substantially in the front-rear direction.
- the rear end of the lens holder 110 is attached to the front surface of the shade 112.
- the projection lens 111 has a function of projecting light emitted from the light source 109 forward.
- a perforation hole 112 a is formed in the shade 112.
- the shade 112 has a function of shielding part of the light emitted from the light source 109.
- a joint member 113 is attached to the lower end of the lamp unit 107.
- the actuator 114 is disposed below the lamp unit 107.
- the actuator 114 includes a case body 115, a drive mechanism (not shown) disposed inside the case body 115, and a drive shaft 116 connected to the drive mechanism.
- the drive shaft 116 is disposed so as to protrude upward from the case body 115.
- the actuator 114 is configured such that the drive shaft 116 can move in the front-rear direction and can rotate in the left-right direction.
- the drive shaft 116 of the actuator 114 is connected to the joint member 113.
- a swivel shaft 117 is attached to the upper end of the lamp unit 107 so as to protrude upward.
- the swivel shaft 117 includes a shaft portion 118 formed in a column shape extending in the vertical direction, a shaft-shaped connecting portion 119 provided on the upper side of the shaft portion 118, and a connecting portion 119.
- the supported portion 120 provided on the upper side of the resin is integrally formed of a resin material.
- the outer diameter of the connecting portion 119 is made smaller than the outer diameter of the shaft portion 18.
- the central axis of the connecting portion 119 is arranged coaxially with the central axis P of the shaft portion 118.
- the supported portion 120 includes a pressed surface 120a whose outer surface faces substantially upward, a pair of regulated surfaces 120b each having an upper edge continuous with the outer peripheral edge of the pressed surface 120a, and an upper edge outside the pressed surface 120a. And a sliding surface 120c continuous to the periphery.
- a portion of the outer peripheral edge that continues to the sliding surface 120c is formed in an arc shape centering on the central axis P of the shaft portion 118, and a portion that continues to the pair of restricted surfaces 120b is substantially straight. It is formed in a shape.
- the pair of regulated surfaces 120b are formed continuously in the left-right direction, facing front diagonal left and front diagonal right, respectively.
- the sliding surface 120c is formed to have a convex spherical surface downward.
- the sliding surfaces 120c are disposed on the rear side and the lower side of the pair of regulated surfaces 120b, and are continuous with the lower edge and the left and right side edges of the pair of regulated surfaces 120b.
- the supported portion 120 has a distance L from the central axis P of the shaft portion 118 to the upper edge of the regulated surface 120b, from the central axis P of the shaft portion 118 to the upper edge of the sliding surface 120c. Shorter than the distance R.
- the distance L described above is a distance from the central axis P of the shaft portion 118 to an arbitrary position on the upper edge of the regulated surface 120b.
- a controlled protrusion 121 protruding upward is provided on the pressed surface 120 a of the supported part 120.
- the regulated protrusion 121 is formed in, for example, a substantially hemispherical shape protruding upward.
- the regulated projection 121 is arranged such that the center of the hemisphere is on the central axis P of the shaft 118.
- the swivel shaft 117 is supported by the intermediate member 122.
- the intermediate member 122 is formed in a shape that opens in the vertical direction and forward.
- the intermediate member 122 includes an enclosure 123 disposed on the lower side, a receiving section 124 that extends obliquely upward and outward from the upper end of the enclosure 123, and a U-shape that extends outward from the upper end of the receiving section 124 and opens forward.
- the flange portion 125 is integrally formed of a metal material. The positions of the front ends of the receiving portion 124 and the flange portion 125 are the same.
- the surrounding portion 123 is formed in a substantially semi-cylindrical shape.
- the inner surface of the receiving portion 124 is formed as a slidable contact surface 124a with which the slidable surface 120c of the supported portion 120 is slidably contacted.
- the swivel shaft 117 is supported by the intermediate member 122 when the connecting portion 119 is inserted from the opening 122 a formed on the front side of the intermediate member 122. At this time, the connecting portion 119 is disposed inside the surrounding portion 123, and the sliding surface 120c of the supported portion 120 is in contact with the sliding contact surface 124a of the receiving portion 124.
- the intermediate member 122 is attached to the bracket 126.
- the bracket 126 is supported by the lamp housing 102 and can be tilted in the horizontal direction and the vertical direction by an aiming adjusting mechanism (not shown).
- the bracket 126 includes a base portion 127 that faces in the vertical direction, and a pair of column portions 128 (only one is shown in FIG. 16) that protrudes upward from the left and right ends of the base portion 127.
- the arm part 129 which connects the upper end part of a pair of pillar part 128 is provided.
- the bracket 126 is made of a resin material.
- An insertion hole 127 a is formed in the base portion 127.
- the base portion 127 is positioned above the actuator 114, and the joint member 113 and the drive shaft 116 are inserted through the insertion hole 127a.
- a shaft support portion 130 is provided at the central portion of the arm portion 129 in the left-right direction.
- a bearing recess 131 is formed in the shaft support portion 130.
- the bearing recess 131 is formed in a shape that opens in the vertical direction and forward.
- the bearing recess 131 includes a shaft insertion surface 132 located on the lower side, a receiving surface 133 that continues to the upper side of the shaft insertion surface 132, and a member support surface 134 that continues to the outside of the receiving surface 133.
- the shaft insertion surface 132 is formed in a circular arc shape.
- the receiving surface 133 is formed in a mortar shape.
- the member support surface 134 is formed in a U-shape opening forward, and includes a placement surface 134a facing upward, and a regulation surface 134b formed continuously from the outer peripheral edge of the placement surface 134a and facing inward. ing.
- a pair of positioning projections 135 projecting forward are provided on the left and right sides of the front surface of the shaft support portion 130, respectively.
- a pair of upper engaging projections 136 projecting upward are provided at positions close to the rear end on the upper surface of the shaft support 130, and are projected downward at positions near the rear end on the lower surface.
- a pair of lower engagement protrusions 137 are provided to be separated from each other in the left-right direction.
- An insertion portion 138 that opens forward is disposed between the pair of upper engagement protrusions 136 at the rear of the bearing recess 131 on the upper surface of the shaft support portion 130.
- the intermediate member 122 on which the swivel shaft 117 is supported is inserted into the bearing recess 131.
- the surrounding portion 123 is disposed inside the shaft insertion surface 132
- the receiving portion 124 is in contact with the receiving surface 133
- the flange portion 125 is in contact with the member support surface 134.
- the intermediate member 122 is attached to the shaft support portion 130 of the bracket 126 in a non-rotatable state by fitting the flange portion 125 to the member support surface 134 and restricting rotation by the restriction surface 134b.
- the swivel shaft 117 is supported by the intermediate member 122 in a state where the intermediate member 122 is attached to the bracket 126, and the swivel shaft 117 tilts in the vertical direction with respect to the bracket 126 via the intermediate member 122. It is possible to turn left and right (horizontal direction).
- a shaft pressing member 139 is attached to the shaft support portion 130 of the bracket 126.
- the shaft pressing member 139 includes a base surface portion 140 facing in the front-rear direction, a pair of upper engaging portions 141 extending rearward from both left and right end portions of the upper edge of the base surface portion 140, and the base surface portion 140.
- a pressing portion 142 extending rearward from the center portion at the upper edge and a pair of lower engaging portions 143 extending rearward from the left and right end portions of the lower edge of the base surface portion 140 are integrally formed of a metal material having elasticity. ing.
- a pair of positioning holes 140a are formed in the base surface portion 140 so as to be separated from each other right and left.
- An engagement hole 141 a is formed at the rear end portion of each upper engagement portion 141.
- a restricting portion 142a that is formed in a substantially hemispherical shape protruding upward is provided in the central portion of the pressing portion 142 in the front-rear direction.
- An engagement hole 143 a is formed at the rear end of each lower engagement portion 143.
- the shaft pressing member 139 is attached to the shaft support portion 130 of the bracket 126.
- the shaft pressing member 139 is elastically deformed so that the distance between the pair of upper engaging portions 141 and the pair of lower engaging portions 143 is widened, and then elastically returns, whereby the engaging holes 141a of the upper engaging portions 141 are restored. And the engagement hole 143a of each lower side engaging part 143 engages with the corresponding upper side engaging protrusion 136 and the lower side engaging protrusion 137, respectively.
- the shaft pressing member 139 is attached to the shaft support portion 130 of the bracket 126.
- each positioning protrusion 135 of the shaft support portion 130 is fitted into each positioning hole 140 a of the base surface portion 140, and the tip end portion of the pressing portion 142 is inserted into the insertion portion 138 of the shaft support portion 130.
- the regulated protrusion 121 is pressed from above by the pressing portion 142 while being inserted into the regulating portion 142 a of the pressing portion 142.
- the front end of the intermediate member 122 is disposed in the vicinity of the rear surface of the base surface portion 140, and the forward movement of the intermediate member 122 is restricted by the shaft pressing member 139.
- the drive shaft 116 of the actuator 114 when the drive shaft 116 of the actuator 114 is rotated, the driving force of the actuator 114 is transmitted to the lamp unit 107 via the joint member 113.
- the lamp unit 107 and the swivel shaft 117 are integrally rotated to the left and right to perform a swivel operation.
- the central axis P of the shaft portion 118 of the swivel shaft 117 is set as the rotation center, and the sliding surface 120c of the swivel shaft 117 is brought into contact with the sliding contact surface 124a of the receiving portion 124 of the intermediate member 122. Touched.
- the lamp unit 107 is rotated in the left-right direction following the traveling direction of the vehicle, and the direction of the optical axis changes according to the traveling direction of the vehicle.
- optical axis adjustment which is leveling adjustment or aiming adjustment.
- Leveling adjustment is performed when the drive shaft 116 is moved in the front-rear direction by the drive mechanism, and the lamp unit 107 is tilted up and down with respect to the bracket 126 with the regulated protrusion 121 of the swivel shaft 117 as a fulcrum. At this time, the sliding surface 120 c of the swivel shaft 117 is in sliding contact with the sliding contact surface 124 a of the intermediate member 122.
- the aiming adjustment is performed by tilting the bracket 126, the lamp unit 107, and the actuator 114 together in the vertical direction or the horizontal direction with respect to the lamp housing 102 by the operation of the aiming mechanism.
- a force may be applied so that the lamp unit 107 is rotated more than a predetermined angle during the swivel operation described above.
- a pair of supported parts 120 included in the swivel shaft 117 that is rotated integrally with the lamp unit 107 is provided.
- the regulated surface 120 b comes into contact with the rear surface of the base surface portion 140 of the shaft pressing member 139.
- the swivel shaft 117 is rotated leftward as shown by a one-dot chain line in FIG. 139 is in contact with the base surface portion 140 of 139.
- the swivel shaft 117 is rotated rightward and the other restricted surface 120b is pivoted. It contacts the base surface portion 140 of the pressing member 139.
- a forward force may be applied to the lamp unit 107 due to vibration or impact during traveling of the vehicle. At this time, a forward force also acts on the swivel shaft 117.
- the regulated protrusion 121 of the swivel shaft 117 is pressed from above by the pressing portion 142 while being inserted into the regulating portion 142a of the pressing portion 142.
- the shape of the restricting portion 142a of the shaft pressing member 139 is not limited to the above-described substantially hemispherical convex shape.
- the restricting portion 142a may have another shape as long as the swivel shaft 117 is pivotable in the left-right direction and the forward movement of the swivel shaft 117 is restricted.
- the regulation of the forward movement of the swivel shaft 117 does not need to be performed by the concave portion formed in the regulating portion 142a of the shaft pressing member 139. It is good also as a structure by which the said control part 121 of the swivel axis
- a pair of possible regulated surfaces 120 b are formed on the supported portion 120 of the swivel shaft 117. Further, the distance L from the rotation center of the swivel shaft 117 to the upper edges of the pair of regulated surfaces 120b is shorter than the distance R from the rotation center of the swivel shaft 117 to the upper edge of the sliding surface 120c.
- the forward projecting portion of the supported portion 120 is small, it is possible to avoid interference between the supported portion 120 and the shaft pressing member 139 and peripheral components arranged around them.
- the swivel shaft 117 since the rotation of the swivel shaft 117 beyond a predetermined angle is restricted by the pair of regulated surfaces 120b coming into contact with the shaft pressing member 139, excessive rotation of the lamp unit 107 is prevented. That is, the swivel shaft 117 has a function of preventing the lamp unit 107 from excessively rotating. Therefore, it is not necessary to separately provide a structure for restricting excessive rotation of the lamp unit 107 inside the lamp outer casing 104, and excessive rotation of the lamp unit 107 can be restricted while simplifying the structure.
- an intermediate member 122 is provided that is interposed between the bracket 126 and the swivel shaft 117 and on which the supported portion 120 slides when the lamp unit 107 rotates. Yes.
- the intermediate member 122 is made of a metal material.
- the supported portion 120 formed of a resin material is in sliding contact with the intermediate member 122 formed of a metal material, so that it is difficult to generate shaving powder due to the sliding contact. Is hard to wear. Therefore, durability of the swivel shaft 117 and the bracket 126 is improved, and the smooth operation state of the lamp unit 107 can be maintained.
- the rotation direction (the first direction of the present invention) and the movement direction (the second direction of the present invention) of the lamp unit 10 (107) by the actuator 23 (114) according to the above embodiment are the left-right direction and the front-rear direction of the vehicle, respectively. It is not limited to the direction. It can be determined as appropriate according to the specifications of the lamp on which the lamp unit 10 (107) is mounted.
Abstract
Description
ランプユニットに連結される出力軸部、および第1の被駆動部を有し、前記出力軸部の軸中心を基準として第1方向において回動可能とされた連結部材と、
前記軸中心に一致する回動中心の第1の側に配置された第2の被駆動部、および前記第1の側の反対側である前記回動中心の第2の側に配置された従動部を有し、前記連結部材に対して前記回動中心を基準として回動可能とされた被駆動部材と、
前記従動部に係合される作用部と、
前記第1の被駆動部に係合され、前記連結部材を前記軸中心を基準として前記被駆動部材に対して回動させる第1の駆動体と、
前記第2の被駆動部に係合され、前記被駆動部材を前記連結部材に対して回動させる第2の駆動体とを備え、
前記第2の駆動体によって前記被駆動部材が回動される際に、前記従動部に係合された前記作用部は、前記回動中心を第2方向に直線移動させ、前記連結部材は、前記被駆動部材とともに前記第2方向へ移動されるようにしたものである。
開口を有するランプハウジング、および前記ランプハウジングの開口を閉塞するカバーを備える灯具外筐と、
前記灯具外筐の内部に配置され、光源を有するランプユニットと、
前記光源から出射される光の照射方向を調整するアクチュエーターとを備え、
前記アクチュエーターは、
前記ランプユニットに連結される出力軸部、および第1の被駆動部を有し、前記出力軸部の軸中心を基準として左右方向において回動可能とされた連結部材と、
前記軸中心に一致する回動中心の第1の側に配置された第2の被駆動部、および前記第1の側の反対側である前記回動中心の第2の側に配置された従動部を有し、前記連結部材に対して前記回動中心を基準として回動可能とされた被駆動部材と、
前記従動部に係合される作用部と、
前記第1の被駆動部に係合され、前記連結部材を前記軸中心を基準として前記被駆動部材に対して回動させる第1の駆動体と、
前記第2の被駆動部に係合され、前記被駆動部材を前記連結部材に対して回動させる第2の駆動体とを備え、
前記第2の駆動体によって前記被駆動部材が回動される際に、前記従動部に係合された前記作用部は、前記回動中心を前後方向に直線移動させ、前記連結部材は、前記被駆動部材とともに前記前後方向へ移動されるようにしたものである。
ランプユニットに連結される出力軸部を有し、少なくとも前記出力軸部が第1方向に回動可能とされるとともに、第2方向に移動可能とされた連結ユニットと、
磁極の第1の境界を検出することにより、前記連結ユニットの前記第2方向における移動位置を検出する第1の磁気検出部と、
磁極の第2の境界を検出することにより、前記連結ユニットの前記第1方向における回動位置を検出する第2の磁気検出部とを備え、
前記第1の境界と前記第2の境界は、前記連結ユニットに設けられているものである。
開口を有するランプハウジング、および前記ランプハウジングの開口を閉塞するカバーを備える灯具外筐と、
前記灯具外筐の内部に配置され、光源を有するランプユニットと、
前記光源から出射される光の照射方向を調整するアクチュエーターとを備え、
前記アクチュエーターは、
前記ランプユニットに連結される出力軸部を有し、少なくとも前記出力軸部が前後方向に移動可能とされると共に、左右方向に回動可能とされた連結ユニットと、
磁極の第1の境界を検出することにより、前記連結ユニットの前記前後方向における移動位置を検出する第1の磁気検出部と、
磁極の第2の境界を検出することにより、前記連結ユニットの前記左右方向における回動位置を検出する第2の磁気検出部とを備え、
前記第1の境界と前記第2の境界は、前記連結ユニットに設けられているものである。
光源から出射された光を前方へ照射し少なくとも左右方向へ回動可能とされたランプユニットと、
被支持部を有し、上方へ突出された状態で前記ランプユニットに取り付けられ、前記左右方向への回動の支点とされるスイブル軸と、
前記被支持部を少なくとも前記左右方向へ回動可能に支持するブラケットと、
前記ブラケットに取り付けられ、前記スイブル軸を押さえる軸押さえ部材とを備え、
前記被支持部は、
前記軸押さえ部材によって上方から押さえられる被押さえ面と、
上縁が前記被押さえ面の外周縁に連続し、前記ランプユニットの回動時に摺動する摺動面と、
上縁が前記被押さえ面の外周縁に連続し、前記スイブル軸が所定の角度以上に回動されたときに前記軸押さえ部材に接触する被規制面とを有し、
前記スイブル軸の回動中心から前記被規制面の上縁までの距離が、前記スイブル軸の前記回動中心から前記摺動面の上縁までの距離より短いものである。
Claims (14)
- ランプユニットに連結される出力軸部、および第1の被駆動部を有し、前記出力軸部の軸中心を基準として第1方向に回動可能とされた連結部材と、
前記軸中心に一致する回動中心の第1の側に配置された第2の被駆動部、および前記第1の側の反対側である前記回動中心の第2の側に配置された従動部を有し、前記連結部材に対して前記回動中心を基準として回動可能とされた被駆動部材と、
前記従動部に係合される作用部と、
前記第1の被駆動部に係合され、前記連結部材を前記軸中心を基準として前記被駆動部材に対して回動させる第1の駆動体と、
前記第2の被駆動部に係合され、前記被駆動部材を前記連結部材に対して回動させる第2の駆動体とを備え、
前記第2の駆動体によって前記被駆動部材が回動される際に、前記従動部に係合された前記作用部は、前記回動中心を第2方向に直線移動させ、前記連結部材は、前記被駆動部材とともに前記第2方向へ移動されるようにしたことを特徴とするアクチュエーター。 - 前記第1の被駆動部は、円弧状に延びる第1のギヤ部を備え、
前記第2の被駆動部は、円弧状に延びる第2のギヤ部を備え、
前記従動部は、円弧状に延びる従動ギヤ部を備え、
前記作用部は、ラック部を備え、
前記第1の駆動体は、前記第1のギヤ部に噛合される第1のウォームを備え、
前記第2の駆動体は、前記第2のギヤ部に噛合される第2のウォームを有することを特徴とする請求項1に記載のアクチュエーター。 - 前記ラック部、前記第1のウォーム、および前記第2のウォームは、前記第2方向に延びていることを特徴とする請求項2に記載のアクチュエーター。
- 前記第1のウォームを前記第2方向へ移動自在に支持するシャフトをさらに備え、
前記連結部材の前記第2方向への移動時に、前記第1のウォームが前記シャフトに対して前記第2方向へ移動されるようにしたことを特徴とする請求項2または3に記載のアクチュエーター。 - 前記第2の駆動体によって前記被駆動部材が前記連結部材に対して回動されるときに、前記連結部材を前記第2方向へ案内するガイド部材をさらに備えることを特徴とする請求項1から4のいずれか一項に記載のアクチュエーター。
- 開口を有するランプハウジング、および前記ランプハウジングの開口を閉塞するカバーを備える灯具外筐と、
前記灯具外筐の内部に配置され、光源を有するランプユニットと、
前記光源から出射される光の照射方向を調整するアクチュエーターとを備え、
前記アクチュエーターは、
前記ランプユニットに連結される出力軸部、および第1の被駆動部を有し、前記出力軸部の軸中心を基準として左右方向において回動可能とされた連結部材と、
前記軸中心に一致する回動中心の第1の側に配置された第2の被駆動部、および前記第1の側の反対側である前記回動中心の第2の側に配置された従動部を有し、前記連結部材に対して前記回動中心を基準として回動可能とされた被駆動部材と、
前記従動部に係合される作用部と、
前記第1の被駆動部に係合され、前記連結部材を前記軸中心を基準として前記被駆動部材に対して回動させる第1の駆動体と、
前記第2の被駆動部に係合され、前記被駆動部材を前記連結部材に対して回動させる第2の駆動体とを備え、
前記第2の駆動体によって前記被駆動部材が回動される際に、前記従動部に係合された前記作用部は、前記回動中心を前後方向に直線移動させ、前記連結部材は、前記被駆動部材とともに前記前後方向へ移動されるようにしたことを特徴とする車輌用前照灯。 - ランプユニットに連結される出力軸部を有し、少なくとも前記出力軸部が第1方向に回動可能とされるとともに、第2方向に移動可能とされた連結ユニットと、
磁極の第1の境界を検出することにより、前記連結ユニットの前記第2方向における移動位置を検出する第1の磁気検出部と、
磁極の第2の境界を検出することにより、前記連結ユニットの前記第1方向における回動位置を検出する第2の磁気検出部とを備え、
前記第1の境界と前記第2の境界は、前記連結ユニットに設けられていることを特徴とするアクチュエーター。 - 前記第1の磁気検出部は、前記出力軸部の軸中心の前記第2方向への移動経路に対向する位置に配置されていることを特徴とする請求項7に記載のアクチュエーター。
- 前記第1の磁気検出部と前記第2の磁気検出部は、前記第1方向に並んで配置されていることを特徴とする請求項7または8に記載のアクチュエーター。
- 前記第1の境界と前記第2の境界を有する検出用マグネットが前記連結ユニットに装着されていることを特徴とする請求項7から9のいずれか一項に記載のアクチュエーター。
- 開口を有するランプハウジング、および前記ランプハウジングの開口を閉塞するカバーを備える灯具外筐と、
前記灯具外筐の内部に配置され、光源を有するランプユニットと、
前記光源から出射される光の照射方向を調整するアクチュエーターとを備え、
前記アクチュエーターは、
前記ランプユニットに連結される出力軸部を有し、少なくとも前記出力軸部が前後方向に移動可能とされると共に、左右方向に回動可能とされた連結ユニットを備え、
磁極の第1の境界を検出することにより、前記連結ユニットの前記前後方向における移動位置を検出する第1の磁気検出部と、
磁極の第2の境界を検出することにより、前記連結ユニットの前記左右方向における回動位置を検出する第2の磁気検出部とを設け、
前記第1の境界と前記第2の境界は、前記連結ユニットに設けられていることを特徴とする車輌用前照灯。 - 光源から出射された光を前方へ照射し、少なくとも左右方向へ回動可能とされたランプユニットと、
被支持部を有し、上方へ突出された状態で前記ランプユニットに取り付けられ、前記左右方向への回動の支点とされるスイブル軸と、
前記被支持部を少なくとも前記左右方向へ回動可能に支持するブラケットと、
前記ブラケットに取り付けられ、前記スイブル軸を押さえる軸押さえ部材とを備え、
前記被支持部は、
前記軸押さえ部材によって上方から押さえられる被押さえ面と、
上縁が前記被押さえ面の外周縁に連続し、前記ランプユニットの回動時に摺動する摺動面と、
上縁が前記被押さえ面の外周縁に連続し、前記スイブル軸が所定の角度以上に回動されたときに前記軸押さえ部材に接触する被規制面とを有し、
前記スイブル軸の回動中心から前記被規制面の上縁までの距離が、前記スイブル軸の前記回動中心から前記摺動面の上縁までの距離より短いことを特徴とする車輌用前照灯。 - 前記ブラケットが樹脂材料によって形成され、
前記スイブル軸が樹脂材料によって形成され、
金属材料によって形成されるとともに、前記ブラケットと前記スイブル軸の間に介在されて前記ランプユニットの回動時に前記被支持部が摺接される中間部材をさらに備えることを特徴とする請求項12に記載の車輌用前照灯。 - 前記被押さえ面に上方へ突出された被規制突部が設けられ、
前記被規制突部が挿入される規制部を有するとともに、前記スイブル軸を上方から押さえる押さえ部が、前記押さえ部材に設けられていることを特徴とする請求項12または13に記載の車輌用前照灯。
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