WO2017110426A1 - 固定部材、自動調心軸受機構、アクチュエータ及び灯具 - Google Patents
固定部材、自動調心軸受機構、アクチュエータ及び灯具 Download PDFInfo
- Publication number
- WO2017110426A1 WO2017110426A1 PCT/JP2016/085932 JP2016085932W WO2017110426A1 WO 2017110426 A1 WO2017110426 A1 WO 2017110426A1 JP 2016085932 W JP2016085932 W JP 2016085932W WO 2017110426 A1 WO2017110426 A1 WO 2017110426A1
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- WO
- WIPO (PCT)
- Prior art keywords
- worm
- bearing
- output shaft
- shaft
- actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0695—Mounting of ball-joints, e.g. fixing them to a connecting rod
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/068—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by mechanical means
- B60Q1/0683—Adjustable by rotation of a screw
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
- F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
-
- 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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- 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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
-
- 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
-
- 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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
- H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
-
- 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
- B60Q2200/00—Special features or arrangements of vehicle headlamps
- B60Q2200/30—Special arrangements for adjusting headlamps, e.g. means for transmitting the movements for adjusting the lamps
- B60Q2200/32—Ball-joints
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/02—Sliding-contact bearings
- F16C25/04—Sliding-contact bearings self-adjusting
-
- 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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/209—Arrangements for driving the actuator using worm gears
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/03—Machines characterised by thrust bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
Definitions
- the present invention relates to a fixing member, a self-aligning bearing mechanism, an actuator, and a lamp provided with the actuator.
- Some vehicle headlamps have a function of changing the direction of emitted light as appropriate.
- the direction of the light emitted from the vehicle headlamp is preferably changed in the vertical direction in accordance with, for example, a change in the weight of the occupant or the load or a change in the vehicle posture due to acceleration / deceleration.
- the direction of light emitted from the vehicle headlamp is swayed left and right in accordance with the turn so that the traveling direction of the vehicle is illuminated.
- an actuator that freely moves a lamp unit including a light source. The actuator is configured to move the direction of light emitted from the lamp unit in the left-right direction and the up-down direction by moving the lamp unit.
- Patent Document 1 an output shaft connected to the lamp unit, a worm gear that rotates the output shaft around a predetermined rotation axis, a worm gear that moves the output shaft in a direction orthogonal to the rotation shaft,
- An actuator comprising: The actuator is miniaturized by integrating a mechanism for rotating the output shaft and a mechanism for moving the output shaft in a direction orthogonal to the rotation axis of the rotation.
- the actuator of the present invention includes an output portion having an output shaft, and a first worm and a second worm extending along a plane perpendicular to the output shaft, and the output portion has teeth on the first worm.
- a rotation mechanism that rotates the output shaft around a predetermined rotation axis, and a movement mechanism that meshes with the second worm and moves the output shaft in a direction perpendicular to the rotation axis.
- the first worm and the second worm are arranged so as to sandwich the output shaft, and the distance between the second worm and the output shaft is shorter than the distance between the first worm and the output shaft.
- the second worm moves the output shaft in a direction perpendicular to the rotation axis of the output shaft in mesh with a moving mechanism provided in the output unit. At this time, a force in the rotation direction of the second worm is also applied to the rotation shaft.
- the actuator since the actuator has a short distance between the output shaft and the second worm, the force transmitted from the second worm to the output shaft is small, and rattling of the output shaft is suppressed.
- the moving mechanism has an inclined rack that is formed on a surface of the output portion facing the second worm and meshes with the second worm.
- the inclined rack can easily secure a relative movement range between the member having the inclined rack and the worm even when the distance between the inclined rack and the worm meshing with the inclined rack is short. Therefore, as a moving mechanism for moving the output shaft in a predetermined direction, the inclined rack formed in the output unit is used, so that the output shaft can be moved even if the inclined rack is provided at a position close to the output shaft. It is easy to secure. Therefore, the second worm and the output shaft can be easily brought close to each other, and it becomes easier to suppress the rattling of the output shaft.
- the inclined rack is formed on a line connecting the output shaft and the second worm in the shortest distance.
- the inclined rack that functions as a moving mechanism By forming the inclined rack that functions as a moving mechanism on the line that connects the output shaft and the second worm in the shortest distance, the distance between the operating point where the inclined rack and the second worm mesh and the output shaft is close. Thus, it becomes easier to suppress rattling of the output shaft.
- the actuator includes a circuit board, the first worm and the second worm are arranged on one surface side of the circuit board, and the first of the electronic components arranged on the circuit board. It is preferable that an electronic component disposed so as to protrude from a position where the worm or the second worm is disposed is disposed on the opposite side of the output shaft of the second worm.
- a lamp of the present invention is characterized by comprising the above-described actuator and a lamp unit having a light source and connected to the output shaft of the actuator.
- the stability of the operation of the lamp unit is improved by suppressing the rattling of the output shaft of the actuator connected to the lamp unit as described above.
- the self-aligning bearing mechanism of the present invention includes a bearing and a bearing housing portion that houses the bearing, and the bearing housing portion has a bearing holding space that is held when the bearing is used.
- a shaft inserted into the bearing when the bearing is used, with the longitudinal direction of the shaft inserted into the bearing when the bearing is inserted into the bearing holding space from the outside as a first axial direction.
- the first axial direction and the second axial direction intersect each other, and the bearing holding space is the longitudinal direction of the shaft inserted through the bearing. Is a space in which the bearing can rotate so that the first axial direction changes from the first axial direction to the second axial direction, and the inner wall forming the bearing holding space is the second axis when the bearing is used.
- the movement of the bearing in the center direction is regulated.
- the bearing held in the bearing holding space may rotate at least in a range where the longitudinal direction of the shaft inserted through the bearing is changed from the first axial direction to the second axial direction. it can. That is, the bearing can rotate to some extent around the center of the bearing in the bearing holding space. Therefore, according to the self-aligning bearing mechanism, even if the direction of the shaft inserted into the bearing is inclined to some extent with respect to the planned direction, the bearing held in the bearing holding space is inclined to the axis. Since it can follow, centering of the shaft is easy. Also, since the orientation when the bearing is inserted is different from the orientation when it is used, the movement of the bearing in the bearing central axis direction is restricted in the orientation in which the bearing is used. The bearing can be inserted and fixed.
- At least one of the bearing housing portions along the first axial direction is at least in the section until the bearing reaches the bearing holding space from the outside. It is preferable that the shaft is opened with a width through which the shaft inserted through the shaft passes.
- the bearing can be passed to the bearing holding space while the shaft is inserted through the bearing, and the bearing holding space can be passed through the shaft while being inserted into the bearing.
- the bearing can be rotated so that the center axis of the bearing changes from the first axial direction to the second axial direction. Therefore, the bearing can be moved and rotated while holding the shaft in a state where the shaft is inserted into the bearing, so that the installation of the bearing is facilitated.
- the outer shape of the bearing is preferably a curved surface with a central portion protruding from both ends in the longitudinal direction of a shaft inserted through the bearing.
- the outer shape of the bearing is a curved surface as described above, it becomes easy to rotate the bearing in the bearing holding space. Further, since the outer shape of the bearing is a curved surface, the contact area between the inner wall of the bearing holding space and the bearing can be easily increased, and thus the movement of the bearing can be easily regulated.
- the first axial direction and the second axial direction are orthogonal to each other.
- the movement of the bearing is restricted in the direction in which it is used.
- the first axial direction and the second axial direction are orthogonal to each other as described above, the direction of the bearing when inserted into the bearing holding space and the bearing are used. Since the direction of the bearing differs greatly, it is easy to prevent the bearing from being unintentionally detached from the bearing holding space.
- the actuator of the present invention includes an output unit having the self-aligning bearing mechanism, and the output unit moves along a guide shaft inserted through the bearing.
- the lamp of the present invention is characterized by comprising the above-mentioned actuator and a lamp unit having a light source and connected to the output section of the actuator.
- the operation of the lamp unit is stabilized by using an actuator with high operation accuracy as described above.
- the fixing member of the present invention is a fixing member that rotatably fixes the rotating member to the support, and holds the rotating member so as to restrict movement of the rotating member in the rotation axis direction, and the rotating member An inner peripheral surface that holds the rotating member so as to be rotatable, and an outer peripheral surface provided with an engaging portion that engages with the support.
- the fixed member serves as an integral member for the bearing and retaining of the rotating member.
- the fixing member is rotated around the rotation axis of the rotating member so that the engaging portion engages with the support and is fixed.
- the fixing member Since the fixing member is rotated around the rotation axis of the rotating member and fixed to the support, the direction of the rotating shaft of the rotating member is difficult to shift when the fixing member is fixed to the support. Can be more easily fixed with high accuracy.
- the actuator of the present invention includes an output unit having an output shaft and a worm for rotating the output shaft, and the worm is rotatable to the output unit while being restricted from moving in the rotation axis direction by a fixed member.
- the fixing member has an inner peripheral surface that holds the worm so that the worm can rotate, and an outer peripheral surface provided with an engaging portion that is engaged with the output portion, The fixing member is characterized in that the engaging portion is fixed by being engaged with the output portion.
- the operation accuracy of the output shaft driven by the worm can be improved.
- the actuator includes a housing that exposes the output shaft and accommodates the output portion and the worm, and the output portion and the worm can move together in a predetermined direction orthogonal to the rotation axis of the output shaft.
- the fixing member is in contact with the casing, and the fixing member slides relative to the casing when the output portion and the worm move together in the predetermined direction.
- the fixing member that fixes the worm contacts and slides on the casing, thereby preventing the rotation axis of the worm from shifting. As a result, it is possible to suppress a decrease in the operation accuracy of the rotation of the output shaft even when the output unit moves.
- a lamp of the present invention is characterized by comprising the above-described actuator and a lamp unit having a light source and connected to the output shaft of the actuator.
- FIG. 3 is an exploded perspective view of a lamp unit, an actuator, and a bracket shown in FIG. 2. It is the top view which omitted the 1st lid member from the actuator concerning an embodiment.
- FIG. 10A is a diagram showing a state in which a bearing and a guide shaft are used by a broken line in the schematic cross-sectional view taken along the line AA shown in FIG.
- FIG. 10B is a diagram showing a state in which a bearing and a guide shaft are used by a broken line in the schematic cross-sectional view taken along the line BB shown in FIG.
- FIG. 11A to FIG. 11D are schematic diagrams for explaining a bearing arrangement process. It is a disassembled perspective view of a housing
- FIG. 15A and FIG. 15B are diagrams for explaining the irradiation range of light emitted from the lamp of the embodiment.
- FIG. 1 is a cross-sectional view schematically showing a lamp according to an embodiment of the present invention.
- FIG. 2 is a perspective view showing a lamp unit, an actuator, and a bracket among the lamps shown in FIG. 3 is an exploded perspective view of the lamp unit, actuator, and bracket shown in FIG. Note that in FIGS. 1 to 3 and other drawings described below, reference numerals may be omitted in order to prevent the drawings from becoming complicated.
- the lamp 1 of this embodiment is a vehicle headlamp. As shown in FIG. 1, the lamp 1 includes a lamp unit 2, an actuator 20, a bracket 15, and a housing 10 as main components.
- the side from which the light from the lamp unit 2 is emitted may be referred to as “front”, and the opposite side may be referred to as “rear”.
- the housing 10 includes a front cover 11, a lamp housing 12, and a back cover 14.
- a space inside the housing 10 is a lamp chamber LR.
- the lamp unit 2, the bracket 15, and the actuator 20 are accommodated in the lamp chamber LR.
- the front of the lamp housing 12 is open, and the front cover 11 is fixed to the lamp housing 12 so as to close the opening.
- the front cover 11 is made of a material that transmits visible light.
- an opening 14 a smaller than the front is formed at the rear of the lamp housing 12.
- the back cover 14 is attached to the lamp housing 12 so as to close the opening 14a.
- the lamp unit 2 includes a light source unit 3, a reflector 4, a projection lens 5, a lens holder 6, a shade 7, a solenoid 8, and a base plate 9 as main components.
- the light source unit 3 includes a visible light emitting element 3a, a light emission control unit 3b, a heat sink 3c, and a cooling fan 3d as main components.
- the visible light emitting element 3a is a semiconductor light emitting element.
- the visible light emitting element 3a emits light having a wavelength of approximately 380 nm to 780 nm. Examples of the semiconductor light emitting element used for the visible light emitting element 3a include LED (Light Emitting Diode), LD (Laser Diode), and OLED (Organic Light-Emitting Diode).
- the light emission control part 3b controls light emission of the visible light light emitting element 3a.
- the visible light emitting element 3a may be a light emitting element other than the semiconductor light emitting element. However, from the viewpoint of reducing power consumption and heat generation, the visible light emitting element 3a is a semiconductor light emitting element as described above. Is preferred.
- a visible light emitting element 3a and a light emission control unit 3b are mounted on one surface side of the heat sink 3c via a wiring board or the like. Further, a heat radiating fin is integrally provided on the other surface side of the heat sink 3c. A cooling fan 3d is attached to the side of the heat sink 3c where the heat dissipating fins are provided. The heat generated by the visible light emitting element 3a and the light emission control unit 3b is transmitted to the heat sink 3c, and the heat sink 3c is cooled by the cooling fan 3d, whereby the heat is efficiently released from the light source unit 3.
- the reflector 4 is made of a curved plate.
- the reflector 4 is fixed to the light source unit 3 so as to cover the visible light emitting element 3a.
- a surface of the reflector 4 facing the visible light emitting element 3a is a reflecting surface 4a.
- the reflection surface 4a is based on a spheroidal curved surface, and the visible light emitting element 3a is arranged at the first focal position or in the vicinity of the first focal point and the second focal point of the elliptical curved surface. At least a part of the light emitted from the visible light emitting element 3a is reflected toward the projection lens 5 by the reflecting surface 4a.
- the projection lens 5 is an aspheric plano-convex lens.
- the incident surface 5b which is a surface on which light from the visible light emitting element 3a is incident, has a flat surface
- the emission surface 5a which is a surface on which the light is emitted, is The convex surface swells in the light emission direction.
- a flange 5 c is formed on the outer periphery of the projection lens 5.
- the projection lens 5 is arranged so that its rear focal point is located at or near the second focal point of the reflecting surface 4a of the reflector 4. That is, the lamp unit 2 of the present embodiment is a PES (Projector Ellipsoid System) optical system.
- PES Projector Ellipsoid System
- the lens holder 6 is a member that holds the projection lens 5.
- the projection lens 5 is fixed to the lens holder 6 by welding the flange 5 c to one end of the lens holder 6.
- the end of the lens holder 6 opposite to the projection lens 5 side is fixed to the light source unit 3 with a screw 6a or the like.
- the base plate 9 is a plate-like member, and is fixed to the light source unit 3 between the lens holder 6 and the light source unit 3 with screws 9a or the like.
- the base plate 9 has an opening through which light emitted from the visible light emitting element 3a and reflected by the reflector 4 passes. The light emitted from the visible light emitting element 3a passes through this opening and enters the projection lens 5.
- a connecting convex portion 2 b provided for connection between the lamp unit 2 and the actuator 20 is provided on the side of the base plate 9 where the actuator 20 is disposed. Further, on the side of the base plate 9 opposite to the side on which the connection convex portion 2 b is provided, a supported convex portion 2 a that is used for connection between the lamp unit 2 and the bracket 15 is provided.
- the supported convex portion 2a has a bowl-shaped curved surface that is convex toward the base plate 9 side.
- the connecting convex portion 2b has a bottomed cylindrical shape having an opening on the side where the actuator 20 is disposed.
- the shade 7 is a member that blocks part of the light from the visible light emitting element 3a.
- the shade 7 is provided between the projection lens 5 and the visible light emitting element 3 a and is fixed to the base plate 9.
- the light emitted from the visible light emitting element 3 a is reflected by the reflector 4, and a part of the light is applied to the shade 7.
- Part of the light irradiated to the shade 7 is shielded by the shade 7 and does not enter the projection lens 5, and the other part is reflected by the shade 7 and enters the projection lens 5.
- the light from the visible light emitting element 3a is controlled by the shade 7 and enters the projection lens 5, so that the light emitted from the projection lens 5 has a desired light distribution pattern.
- the shade 7 of the present embodiment is configured to be rotatable around the rotation shaft 7 a and is rotated by the power from the solenoid 8. By moving the shade 7 in this manner, the light distribution pattern can be changed according to the degree of rotation of the shade 7.
- Bracket 15 is disposed between the lamp unit 2 and the actuator 20 and has a plate-like mounting plate 16 having a surface facing the lamp unit 2 and a surface facing the actuator 20, and is continuously formed on the mounting plate 16. And a frame-like frame portion 17 surrounding the lamp unit 2 in a front view.
- the mounting plate 16 has a through hole 16a penetrating from the lamp unit 2 side to the actuator 20 side.
- the connecting projection 2b of the lamp unit 2 is passed through the through hole 16a.
- the through-hole 16a has a width that allows the connection convex portion 2b to pass therethrough, and has a predetermined length in the front-rear direction so that the connection convex portion 2b can move in the front-rear direction.
- the mounting plate 16 has a support piece 16 b extending from the rear end to the side where the actuator 20 is disposed.
- the support piece 16b is formed with a through hole 15a penetrating in the thickness direction.
- the through hole 15 a is used for mounting the actuator 20 to the bracket 15.
- a groove 17a having a curved surface corresponding to the curved surface of the supported convex portion 2a is formed at a position of the frame portion 17 facing the through hole 16a.
- the supported convex portion 2a is fitted into the groove 17a via the curved surface of the supported convex portion 2a and the sliding member 18a having a shape corresponding to the curved surface of the groove 17a.
- the lamp unit 2 and the bracket 15 are connected by fixing the pressing member 18b to the frame part 17 so as to cover the supported convex part 2a.
- the lamp unit 2 is rotatable within a predetermined range around a rotation axis on a straight line connecting the supported convex portion 2a and the connecting convex portion 2b, and the pendulum within a predetermined range in the front-rear direction perpendicular to the rotation axis. It is supported by bracket 15 so that it can move like.
- FIG. 4 is a plan view in which a first lid member 94 to be described later is omitted from the actuator 20.
- FIG. 5 is an exploded perspective view of the actuator 20.
- FIG. 6 is an exploded perspective view showing a part of the members shown in FIG. 5 in an enlarged manner.
- FIG. 7 is an exploded perspective view showing only the housing member 35 and the fixing member 45.
- FIG. 8 is an exploded perspective view showing only the housing member 35 and the fixing member 45 as seen from a direction different from FIG.
- the actuator 20 includes an output unit 30 having an output shaft 33, a first worm 40 and a second worm 50 extending along a plane perpendicular to the output shaft 33, and a first that transmits a driving force to the first worm 40.
- the main structure includes a drive mechanism 60, a second drive mechanism 70 that transmits a driving force to the second worm 50, a circuit board 80, and a housing 90 that houses them.
- the output unit 30 includes an output shaft member 31 and a housing member 35 that is stacked on the output shaft member 31.
- the output shaft member 31 includes a disk-shaped base portion 32, an output shaft 33 projecting from the center of the base portion 32 to one surface side, and an output shaft from a part of the outer edge of the base portion 32.
- a hanging piece 32a extending to the opposite side of the side from which 33 protrudes, and a gear portion 34 provided to protrude outward from the hanging piece 32a in parallel with the radial direction of the base portion 32.
- the gear part 34 has an outer edge formed in an arc shape, and has a bevel gear 34a on the outer edge.
- the inclined gear 34a functions as a rotation mechanism that meshes with the first worm 40 and rotates the output shaft 33 around a predetermined rotation shaft 33a.
- the bevel gear 34a is a bevel gear formed on a surface along an arc centering on the rotation shaft 33a.
- the output shaft 33 is a part connected to the connecting projection 2b of the lamp unit 2.
- the output shaft 33 is a bottomed cylindrical part having a hollow part opened on the base part 32 side. Further, the output shaft 33 has a pair of connecting projections 33b so as to protrude outward from the outer peripheral surface.
- a pair of connection convex part 33b is formed on the straight line orthogonal to the rotating shaft 33a.
- the output shaft 33 is inserted into the hollow portion of the connecting convex portion 2b, and the pair of connecting convex portions 33b are respectively engaged with concave portions on the inner peripheral surface (not shown) of the connecting convex portion 2b.
- the lamp unit 2 rotates or moves following the output shaft 33 by connecting the output shaft 33 and the connecting projection 2b.
- the housing member 35 includes an insertion convex portion 36, a gear housing portion 37, a worm housing portion 38 provided adjacent to the gear housing portion 37, and a gear housing portion 37 of the insertion convex portion 36. And an inclined rack 39 formed on the outer side opposite to the provided side.
- the insertion convex portion 36 is a portion that is inserted into the hollow portion of the output shaft 33.
- the insertion convex portion 36 has a substantially cylindrical shape with an outer diameter slightly smaller than the inner diameter of the hollow portion of the output shaft 33.
- the gear housing portion 37 is a recess having an opening on the side on which the output shaft member 31 is overlapped and housing the gear portion 34.
- the gear part 34 is accommodated in the gear accommodating part 37 from the opening.
- the gear housing portion 37 has abutting walls 37 a and 37 b that are formed apart from each other in the rotation direction of the output shaft 33.
- the abutting wall 37a is shown in FIGS. 4 and 6, and the position where the abutting wall 37b is formed is shown by a dotted line in FIG.
- the abutting walls 37a and 37b are formed in directions facing the end faces 34b and 34c in the rotation direction of the output shaft 33 in the gear portion 34, respectively.
- the rotation of the output shaft 33 around the rotation shaft 33a relative to the housing member 35 is caused by the rotation of the gear portion 34 from the position where one end surface 34b in the rotation direction of the output shaft 33 abuts against the abutting wall 37a. This is possible in a range up to a position where the other end face 34c in the rotation direction of the output shaft 33 abuts against the abutting wall 37b.
- a lid portion 37 c that closes a part of the opening of the gear housing portion 37 is formed at an end portion of the gear housing portion 37 on the abutting wall 37 b side.
- the worm accommodating portion 38 is a portion where the first worm 40 is accommodated, and is formed in a substantially cylindrical shape. However, as shown in FIG. 7, an opening 38a is formed on the side of the worm housing portion 38 where the gear housing portion 37 is provided. A part of the first worm 40 accommodated in the worm accommodating portion 38 is exposed to the gear accommodating portion 37 side from the opening 38a. Thus, the 1st worm 40 and the inclined gear 34a can mesh
- a through hole 38d shown in FIG. 7 and a through hole 38e shown in FIG. 8 are formed on the inlet side of the worm housing portion 38 where the first worm 40 is inserted.
- the through hole 38d and the through hole 38e may be a recess formed on the inner peripheral surface side of the worm accommodating portion 38.
- a fixing portion 38b is provided on the inlet side of the worm accommodating portion 38 so that the fixing member 45 can be disposed.
- the fixing member 45 is a member that fixes the first worm 40 to the housing member 35.
- the fixing part 38b is formed by a piece 38ba and a piece 38bb which are continuously formed at the end of the worm housing part 38 on the fixing part 38b side.
- the piece 38ba and the piece 38bb are provided to face each other, and are formed so as to extend in a direction parallel to the longitudinal direction of the worm accommodating portion 38 from the end portion of the worm accommodating portion 38, respectively.
- a gap 38bc is formed between one ends of the pieces 38ba and 38bb, and a gap 38bd is formed between the other ends of the pieces 38ba and 38bb.
- a groove 38be opened to the gap 38bc side is formed at a position of the piece 38bb on the worm housing portion 38 side. Further, on the opposite side of the groove 38be from the worm accommodating portion 38, a convex portion 38bf protruding to the piece 38ba side is formed.
- a convex portion 38bg protruding toward the piece 38bb side is formed.
- a notch 38bh is formed by the convex portion 38bg and the end of the worm accommodating portion 38.
- an opening 38c is formed on the side of the worm housing portion 38 opposite to the side where the fixing portion 38b is provided.
- the inclined rack 39 is an inclined rack that is formed on a surface of the output unit 30 that faces the second worm 50 and meshes with the second worm 50. More specifically, the inclined rack 39 is formed on a surface of the housing member 35 that faces the second worm 50 and is parallel to the longitudinal direction of the second worm 50.
- the output unit 30 can be moved in a direction orthogonal to the rotation shaft 33 a according to the rotation of the second worm 50. That is, the inclined rack 39 functions as a moving mechanism that meshes with the second worm 50 and moves the output shaft 33 in a direction orthogonal to the rotation shaft 33a.
- the inclined rack 39 is formed on the line connecting the output shaft 33 and the second worm 50 in the shortest distance.
- the inclined tooth rack 39 functioning as a moving mechanism on the line connecting the output shaft 33 and the second worm 50 in the shortest distance, the operating point where the second worm 50 and the inclined tooth rack 39 mesh with each other and the output shaft.
- the distance between the second worm 50 and the output shaft 33 can be appropriately transmitted.
- the housing member 35 is a rod-shaped guide disposed so that the longitudinal direction is the direction orthogonal to the rotation shaft 33a. It moves while being guided by the shaft 100.
- the housing member 35 includes bearing housing portions 35a and 35b in which the bearings of the guide shaft 100 are disposed.
- the bearing housing portions 35 a and 35 b are provided to be separated from each other in the moving direction of the housing member 35, that is, the longitudinal direction of the guide shaft 100.
- the bearing 101 serving as a bearing for the guide shaft 100 is disposed in the bearing housing portion 35a.
- the outer diameter of the bearing 101 is substantially the same as the inner diameter of the bearing housing portion 35a, and the bearing 101 is fixed to the bearing housing portion 35a by, for example, press fitting.
- FIG. 9 is a schematic view of the bearing housing portion 35b viewed from the direction indicated by the arrow IX in FIG.
- FIG. 10A is a diagram schematically showing a cross section taken along the line AA shown in FIG. 7 and showing the bearing 102 and the guide shaft 100 with broken lines when the bearing 102 is used.
- FIG. 10B is a diagram schematically showing a cross section taken along the line BB in FIG. 7 and showing the bearing 102 and the guide shaft 100 with broken lines when the bearing 102 is used. “When the bearing 102 is used” means that the guide shaft 100 is inserted through the bearing 101 and the bearing 102 and the housing member 35 is movable along the guide shaft 100.
- the bearing housing portion 35b includes a pair of opposing pieces 35da and 35db, a piece 35dc connecting one end of the pair of pieces 35da and 35db, and a piece 35dd connecting the other end of the pair of pieces 35da and 35db.
- a curved inner wall 35e that is convex toward the bearing housing portion 35a and has a recessed wall surface is formed by the inner surfaces of the piece 35da, the piece 35db, and the piece 35dd. Further, a curved recess 35f is formed on the inner surface of the piece 35dc.
- the inner wall 35e and the recess 35f have curved surfaces that match the outer peripheral surface of the bearing 102. As shown in FIGS. 10A and 10B, when the bearing 102 is used, the inner wall 35e and the recess 35f abut against the bearing 102. Thus, when the bearing 102 is used, the bearing 102 is held in the bearing holding space 35c surrounded by the inner wall 35e and the recess 35f.
- the inner wall 35e abuts on one side in the longitudinal direction of the guide shaft 100 on the outer peripheral surface of the bearing 102, and the recess 35f abuts on the other side. Movement in the longitudinal direction is restricted. Further, since the inner wall 35e and the recess 35f are formed in a curved shape matching the outer peripheral surface of the bearing 102, the bearing 102 can rotate in the bearing holding space 35c.
- an opening 35g is formed on the bearing housing portion 35a side of the inner wall 35e.
- the guide shaft 100 is passed through the opening 35f.
- the inlet side end portion of the piece 35dd between the piece 35da and the piece 35dd is open as shown particularly well in FIG. Further, a groove 35h is formed at the inlet side end of the piece 35dd.
- the bearing housing portion 35b when the bearing housing portion 35b is viewed from the entrance side where the bearing 102 is inserted, the distance between the pair of the pieces 35da and 35db facing each other is larger than the outer diameter of the bearing 102.
- the distance between the piece 35dc and the piece 35dd is smaller than the outer diameter of the bearing 102.
- FIG. 11A to FIG. 11D are diagrams for explaining the arrangement process of the bearing 102.
- 11 (A) and 11 (B) each show a state before the bearing 102 is arranged in the bearing holding space 35c
- FIGS. 11 (C) and 11 (D) show that the bearing 102 is the bearing.
- the state when it is arranged in the holding space 35c is shown.
- 11A and 11C are diagrams showing the same place as FIG. 10A
- FIGS. 11B and 11D are the same places as FIG. 10B.
- the distance between the piece 35da and the piece 35db is larger than the outer diameter of the bearing 102 on the inlet side where the bearing 102 is inserted in the bearing housing portion 35b, and the distance between the piece 35dc and the piece 35dd is the bearing 102. Is smaller than the outer diameter. Therefore, if the bearing 102 is not in a predetermined direction, the bearing 102 cannot be passed through the bearing holding space 35c. This predetermined direction is different from the direction in which the bearing 102 is used.
- the longitudinal direction of the guide shaft 100 inserted through the bearing 102 when it can be passed through the bearing holding space 35c is defined as a first axial direction y, and is indicated by a one-dot chain line in FIG.
- the longitudinal direction of the guide shaft 100 inserted through the bearing 102 when the bearing 102 is used is a second axial direction x, and is indicated by a one-dot chain line in FIG.
- the first axial direction y and the second axial direction x are directions that intersect each other.
- the longitudinal direction of the guide shaft 100 inserted through the bearing 102 is set to the first axial direction y so as to face the bearing holding space 35c from the outside. Then, the bearing 102 is inserted.
- the first axial direction y is parallel to the rotating shaft 33a
- the moving direction of the bearing 102 when passing through the bearing holding space 35c is a direction orthogonal to the first axial direction y.
- the moving direction of the bearing 102 when it can be passed through the bearing holding space 35c may be a direction that intersects the first axial direction y.
- the longitudinal direction of the guide shaft 100 inserted through the bearing 102 is changed from the first axial direction y.
- the bearing 102 is rotated so as to be in the biaxial direction x. In this way, the bearing 102 can be disposed in the bearing holding space 35c.
- the output shaft is moved along the guide shaft in order to move the output shaft smoothly.
- the guide shaft is fixed to a recess provided in the housing.
- the components of the housing are mainly resin molded products, there may be deviations in the installation position of the bearing due to errors in the mold used to manufacture the members, temperature changes, etc. Improvement is demanded.
- the bearing 102 held in the bearing holding space 35c has at least a range in which the longitudinal direction of the guide shaft 100 inserted through the bearing 102 is changed from the first axial direction y to the second axial direction x. Can rotate. That is, according to the bearing 102 and the bearing holding space 35c, the bearing 102 can rotate around the center of the bearing in the bearing holding space 35c. Therefore, even if the direction of the guide shaft 100 inserted into the bearing 102 is inclined to some extent with respect to a predetermined direction, the bearing 102 held in the bearing holding space 35c can follow the inclination of the shaft. Therefore, the guide shaft 100 can be easily centered.
- the self-aligning bearing mechanism that can automatically center the guide shaft 100 is configured by the bearing 102 and the bearing housing space 35c. According to the self-aligning bearing mechanism, for example, even if an error of a mold used for manufacturing a member constituting the output unit 30 or a volume change of a component due to a temperature change occurs, the guide shaft 100 is changed to the error or change. Can be followed. In addition, since the orientation when the bearing 102 is inserted is different from the orientation when the bearing 102 is used, the movement of the bearing 102 in the bearing central axis direction is restricted in the orientation when the bearing 102 is used. The bearing 102 can be inserted and fixed without a member or the like for fixing the bearing 102.
- one side along the first axial direction y is a section until the bearing 102 reaches the bearing holding space 35c from the outside, that is, FIG.
- a section D1 shown in FIG. 10A it is preferable that the guide shaft 100 that is inserted through at least the bearing 102 is opened at a width that allows it to pass.
- the section D1 is formed by partially opening the piece 35da and the piece 35db and forming the groove 35h on the inlet side.
- the one side along the first axial direction y is opened with a width through which the guide shaft 100 passes. As shown in FIGS.
- the bearing 102 is held while the guide shaft 100 is inserted into the bearing 102.
- the center axis of the bearing 102 can be inserted from the first axial direction y to the second axial direction x in the bearing holding space 35c with the guide shaft 100 being inserted through the bearing 102.
- the bearing 102 can be rotated. Therefore, since the bearing 102 can be moved and rotated while holding the guide shaft 100 in a state where the guide shaft 100 is inserted into the bearing 102, the installation of the bearing 102 is facilitated.
- the outer shape of the bearing 102 is such that the central portion is at both ends in the longitudinal direction of the guide shaft 100 inserted through the bearing 102 as shown in FIGS. 11 (A) and 11 (D). It is preferable that the curved surface protrudes more. Since the outer shape of the bearing 102 is a curved surface as described above, it is easy to rotate the bearing 102 in the bearing holding space 35c. Further, since the outer shape of the bearing 102 is a curved surface, it becomes easy to increase the contact area between the inner wall 35e and the recess 35f forming the bearing holding space 35c and the bearing 102, and thus the movement of the bearing 102 is restricted. Becomes easier.
- first axial direction y and the second axial direction x are orthogonal to each other.
- the directions of the first axial direction y and the second axial direction x are greatly different from each other, it is easy to suppress the bearing 102 from being unintentionally detached from the bearing holding space 35c.
- the actuator 20 of this embodiment includes an output unit 30 having the above self-aligning bearing mechanism, and the output unit 30 moves along the guide shaft 100 inserted through the bearing 102.
- Such an actuator 20 uses a self-aligning bearing mechanism having a simple structure as described above, and is an actuator with high operation accuracy and high productivity.
- the first worm 40 has a gear 42 on the outer periphery.
- the first worm 40 is a rod-shaped rotating member that rotates around a rotation axis along the longitudinal direction. Further, a groove 43 along the circumferential direction is formed at one end of the first worm 40 in the longitudinal direction.
- a fixing member 45 for fixing the first worm 40 to the housing member 35 is fitted into the groove 43.
- the first worm 40 has a hollow shape with an end opposite to the side on which the groove 43 is formed, and is not shown so as to be surrounded by the gear 42 along the rotation axis of the first worm 40. It has a hollow part.
- the fixing member 45 is a fixing member that fixes the first worm 40 to the housing member 35 in a rotatable manner.
- the housing member 35 is a support that supports the first worm 40 via the fixing member 45.
- the fixing member 45 has a through hole 45b penetrating in the thickness direction and has a substantially circular outer shape. However, the outer peripheral surface and the inner peripheral surface forming the through hole 45b are connected by being partially cut away.
- the fixing member 45 has elasticity, and when the fixing member 45 is fitted into the groove 43 of the first worm 40, the notched portion 45c is widened and the first worm 40 is inserted into the through hole 45b.
- the fixing member 45 has an inner peripheral surface that holds the first worm 40 so that the first worm 40 can rotate, and an outer peripheral surface on which a plurality of protrusions are provided.
- the shape of the outer peripheral surface of the fixing member 45 will be described with reference to FIGS. 7 and 8.
- the outer diameter of the portion of the fixing member 45 on the worm housing portion 38 side is formed thinner than the inner diameter of the worm housing portion 38, and the portion is inserted into the worm housing portion 38.
- Convex portions 45d and 45e are formed at positions of the outer peripheral surface facing each other in the portion inserted into the worm housing portion 38 of the fixing member 45.
- the convex portions 45d and 45e are provided at positions corresponding to the through holes 38d and 38e of the worm accommodating portion 38.
- a groove (not shown) is formed on the inner peripheral surface on the inlet side of the worm accommodating portion 38 so as to guide 45d and 45e to the through holes 38d and 38e.
- two convex portions 45g and 45h are formed on the outer peripheral surface of the portion of the fixing member 45 that is not inserted into the worm housing portion 38 and disposed on the fixing portion 38b, at a position on the worm housing portion 38 side. Yes.
- the convex portion 45g is formed so as to fit into the notch 38bd
- the convex portion 45h is formed so as to fit into the groove 38be.
- a latch 45i is formed at a position adjacent to the opposite side of the convex portion 45h to the worm accommodating portion 38 as shown in FIG.
- the outer peripheral surface of the fixing member 45 is provided with recesses 45j and 45k.
- the recesses 45j and 45k are exposed in the gaps 38bc and 38bd when the fixing member 45 is fixed to the housing member 35 and when the fixing member 45 is fixed to the housing member 35.
- the fixing member 45 When fixing the fixing member 45 to the housing member 35, the fixing member 45 is pressed against the worm housing portion 38 so that the convex portion 45g is positioned in the gap 38bd and the convex portion 45h is positioned in the gap 38bc. Thereafter, by rotating the fixing member 45, the convex portion 45d is in the through hole 38d, the convex portion 45e is in the through hole 38e, the convex portion 45g is in the notch 38bh, the convex portion 45h is in the groove 38be, and the latch 45i is in the convex portion.
- the fixing member 45 is fixed to the accommodating member 35 by being respectively fitted to 38 bf.
- the fixing member 45 is inserted into the worm housing portion 38 together with the first worm 40 while being fitted in the groove 43 of the first worm 40.
- the fixing member 45 is fixed to the housing member 35 as described above by rotating the fixing member 45 around the rotation axis of the worm 40.
- the fixing member 45 is fixed to the housing member 35 with such a force that the fixing member 45 does not rotate even if the first worm 40 rotates.
- the fixing member 45 is fitted in the groove 43 of the first worm 40 and is fixed to the housing member 35, thereby restricting the movement of the first worm 40 in the rotation axis direction. 40 is held.
- the fixing member 45 serves as both a bearing for the first worm 40 and a retainer.
- the first worm 40 and other worms described in detail below have an important role to transmit the driving force to the output shaft 33 and need to be fixed with high accuracy.
- the fixing member 45 serves as both a bearing and a retaining member for the first worm 40, it is easy to fix the first worm 40 to the housing member 35 with high accuracy.
- the 1st worm 40 with sufficient precision, it becomes easy to apply force appropriately from the 1st worm 40 to the output part 30, and the operation
- the fixing member 45 when the fixing member 45 is fixed to the housing member 35, the fixing member 45 is rotated around the rotation axis of the first worm 40, so that the first fixing member 45 is fixed to the housing member 35.
- the position of the rotating shaft of the worm 40 is difficult to shift, and the first worm 40 can be fixed with higher accuracy.
- the first drive mechanism 60 includes a shaft member 61, a transmission gear 62, and a motor 63.
- the shaft member 61 is a rod-shaped rotating member that rotates around a rotation axis along the longitudinal direction.
- the shaft member 61 includes a shaft portion 61a inserted into the hollow portion of the first worm 40 described above, and a helical gear portion 61c provided on the opposite side of the shaft portion 61a from the side inserted into the first worm 40. And a groove 61d along the circumferential direction formed on the opposite side of the shaft portion 61a of the helical gear portion 61c.
- a fixing member 64 for fixing the shaft member 61 to the housing 90 is fitted in the groove 61d.
- the shaft portion 61a has a plurality of protrusions 61b along the longitudinal direction on the outer periphery. Moreover, the hollow part of the 1st worm 40 has the groove
- the shaft portion 61a is movable in the longitudinal direction in the hollow portion of the first worm 40, and the shaft member 61 and the first worm 40 are relatively movable in the longitudinal direction. Further, in a state where the shaft portion 61a is inserted into the hollow portion of the first worm 40, the respective projection portions 61b of the shaft portion 61a fit into the respective grooves in the hollow portion of the first worm 40, and the shaft portion 61a and the The relative rotation with the one worm 40 is restricted. Therefore, the shaft member 61 can rotate around the rotation axis parallel to the longitudinal direction together with the first worm 40. For this reason, the rotating shaft of the helical gear portion 61 c has the same direction as the rotating shaft of the first worm 40.
- the fixing member 64 is a fixing member that fixes the shaft member 61 to a housing 90 that is a support body in a rotatable manner.
- the fixing member 64 has a through hole 64b penetrating in the thickness direction and has a substantially rectangular outer shape. However, the outer peripheral surface and the inner peripheral surface forming the through hole 64b are connected by cutting out a part.
- the fixing member 64 has elasticity, and when the fixing member 64 is fitted into the groove 61d of the shaft member 61, the notched portion 64c is expanded and the shaft member 61 is inserted into the through hole 64b.
- the fixing member 64 is formed along an inner peripheral surface that holds the shaft member 61 so that the shaft member 61 can rotate, and a side that faces the missing portion 64c of the outer quadrangle. And a protrusion 64a protruding to the surface.
- the fixing member 64 is fixed to the housing 90 while being fitted in the groove 61 d of the shaft member 61. As described above, the fixing member 64 is fitted in the groove 61d of the shaft member 61 and is fixed to the housing 90, thereby holding the shaft member 61 so as to restrict the movement of the shaft member 61 in the rotation axis direction. To do.
- the fixing member 64 serves as both a bearing for the shaft member 61 and a retaining member. Since the fixing member 64 serves as both a bearing for the shaft member 61 and a retaining member, it is easy to fix the shaft member 61 to the housing 90 with high accuracy. Thus, by fixing the shaft member 61 with high precision, it becomes easy to apply force appropriately from the shaft member 61 to the first worm 40, and the operation accuracy of the output shaft 33 can be improved.
- the motor 63 includes a core assembly 63a having a coil, a bearing 63b disposed at the center of the core assembly 63a, and a rotor member 63c covering the core assembly 63a.
- the rotor member 63c is fixed to the cylindrical magnet 63d disposed so as to cover the outer periphery of the core assembly 63a, the lid member 63e disposed so as to cover one end of the magnet 63d, and the lid member 63e.
- a shaft 63f inserted through the bearing 63b.
- a spur gear 63g having a rotational axis that coincides with the shaft 63f is provided on the side of the lid member 63e opposite to the side where the core assembly 63a is disposed.
- the transmission gear 62 includes a spur gear 62a and a worm 62b provided so as to protrude from one surface side from the center of the spur gear 62a, and the spur gear 62a and the direction of the rotation axis coincide with each other. Through hole.
- the transmission gear 62 is arranged so that the spur gear 62a meshes with the spur gear 63g of the rotor member 63c, and the worm 62b meshes with the helical gear portion 61c of the shaft member 61.
- the second worm 50 is a rod-shaped rotating member that rotates around a rotation axis along the longitudinal direction. As shown in FIG. 5, the second worm 50 has a gear 52 on the outer periphery. In addition, a groove 53 is formed along the circumferential direction at one end of the second worm 50 in the longitudinal direction. A fixing member 55 for fixing the second worm 50 to the housing 90 is fitted in the groove 53. Further, the second worm 50 has a hollow portion, like the first worm 40.
- the fixing member 55 is a fixing member that rotatably fixes the second worm 50 to the housing 90 that is a support. Since the fixing member 55 has the same configuration as the fixing member 64, detailed description thereof is omitted.
- the fixing member 55 serves as both a bearing for the second worm 50 and a retaining member. Since the fixing member 55 serves as both a bearing and a retainer for the second worm 50, it is easy to fix the second worm 50 to the housing 90 with high accuracy. By fixing the second worm 50 with high accuracy in this way, it becomes easy to apply force appropriately from the second worm 50 to the output unit 30, and the operation accuracy of the output shaft 33 can be improved.
- the second drive mechanism 70 includes a shaft member 71, a transmission gear 72, and a motor 73.
- the shaft member 71 is a rod-shaped rotation member that rotates around a rotation axis along the longitudinal direction, and has the same configuration as the shaft member 61.
- the shaft portion of the shaft member 71 is inserted into the hollow portion of the second worm 50, and the shaft member 71 can rotate around the rotation axis parallel to the longitudinal direction together with the second worm 50.
- the shaft member 71 has a worm portion in which the direction of the rotation shaft is the same as that of the second worm 50.
- the shaft member 71 is fixed to the housing 90 by a fixing member 74.
- the fixing member 74 is a fixing member that rotatably fixes the shaft member 71 to the housing 90 that is a support. Since the fixing member 74 has the same configuration as the fixing member 64, detailed description thereof is omitted.
- the fixing member 74 serves as both a bearing for the shaft member 71 and a retaining member. Since the fixing member 74 serves as both a bearing for the shaft member 71 and a retaining member, it is easy to fix the shaft member 71 to the housing 90 with high accuracy. Thus, by fixing the shaft member 71 with high accuracy, it becomes easy to apply force appropriately from the shaft member 71 to the second worm 50, and the operation accuracy of the output shaft 33 can be improved.
- the motor 73 has the same configuration as the motor 63, and the motor 73 has a core assembly, a bearing, and a rotor member, and the rotor member has a spur gear.
- the transmission gear 72 has the same configuration as the transmission gear 62 and has a spur gear and a worm.
- the spur gear meshes with the spur gear of the motor 73, and the worm meshes with the worm portion of the shaft member 71.
- circuit board 80 A circuit having a predetermined pattern (not shown) is formed on the circuit board 80, and electronic components 81, 82, 83, a connector 84, and the like are mounted thereon.
- the electronic components 81, 82, and 83 are large components among the electronic components arranged on the circuit board 80.
- the electronic components 81, 82, and 83 are, for example, radial components, the electronic component 81 and the electronic component 82 are, for example, capacitors, and the electronic component 83 is, for example, a coil.
- the connector 84 is disposed on the front central portion on the circuit board 80.
- FIG. 12 is an exploded perspective view of the housing 90.
- FIG. 13 is an exploded perspective view of the housing 90 viewed from a direction different from that in FIG.
- the housing 90 includes a housing body 91, a first lid member 94 disposed on one side of the housing body 91, and a second lid member 95 disposed on the other side of the housing body 91.
- the housing main body 91 includes an intermediate plate portion 92 and a frame portion 93 that surrounds the outer periphery of the intermediate plate portion 92.
- the frame portion 93 is provided so as to extend to the first lid member 94 side and the second lid member 95 side of the middle plate portion 92.
- the first lid member 94 covers a space formed by one surface of the middle plate portion 92 and the inner peripheral surface of the frame portion 93, and the second lid member 95 is formed by the other surface of the middle plate portion 92 and the frame portion.
- the space formed by the inner peripheral surface of 93 is covered.
- the middle plate portion 92 has a substantially rectangular plate shape, and the corner portions located at both ends of one long side of the pair of long sides of the rectangle are rounded and located at both ends of the other long side. Corners are notched. Further, in the vicinity of one of the cut corners, a convex portion 92c that protrudes toward the first lid member 94 is formed. In the portion where the convex portion 92c is formed, the space between the middle plate portion 92 and the first lid member 94 is narrowed, and the space between the middle plate portion 92 and the second lid member 95 is widened.
- the frame portion 93 is formed so as to surround the outer periphery of the intermediate plate portion 92 having the above shape.
- a pair of attached pieces 91 a that protrude outward are provided in a portion of the frame portion 93 that surrounds the cut-out corner portion of the middle plate portion 92.
- the pair of attached pieces 91a has a through-hole penetrating in the thickness direction.
- a connector cover portion 93 a that protrudes outward is provided at a position overlapping the connector 84 in the frame portion 93 so as to cover the connector 84.
- a barrel-shaped convex portion 93b having an outer shape protruding outward is formed on the side of the frame portion 93 opposite to the side where the connector cover portion 93a is provided.
- a portion of the outer peripheral surface of the frame portion 93 where the attached piece 91a, the connector cover portion 93a, and the barrel-shaped convex portion 93b are not formed are spaced apart from each other in the circumferential direction of the middle plate portion 92 and a plurality of locking convexes.
- a portion 93c is provided.
- a plurality of recesses 93 d are formed on the inner surface of the frame portion 93 on the second lid member 95 side so as to be separated from each other in the circumferential direction of the intermediate plate portion 92.
- the first lid member 94 has a plate-like lid body portion 94 a that covers most of one side of the housing body 91.
- the lid main body portion 94 a is located at a position of the first lid member 94 that overlaps the plurality of locking projections 93 c formed on the frame portion 93.
- a plurality of locking pieces 94c extending from the outer periphery of the frame so as to overlap the frame portion 93 are provided.
- Each of the plurality of locking pieces 94 c has a hole, and the locking projection 93 c is locked in the hole of each locking piece 94 c, and the first lid member 94 is fixed to the housing body 91.
- a through-hole 94b that penetrates in the thickness direction is formed in a substantially central portion of the lid main body portion 94a.
- the output shaft 33 is inserted into the through hole 94b. Accordingly, the housing 90 accommodates the output unit 30 and the like with the output shaft 33 exposed.
- the through hole 94b has a width in which the output shaft 33 can be inserted and a length that allows the output shaft 33 to move as described above.
- the first lid member 94 has attached pieces 94d and 94d at positions overlapping the attached pieces 91a and 91a.
- the attached pieces 94d and 94d have through holes penetrating in the thickness direction, and the through holes overlap the through holes of the attached pieces 91a and 91a.
- the second lid member 95 has substantially the same outer shape as the circuit board 80.
- a convex portion 95 a having an outer periphery overlapping the inner periphery of the frame portion 93 is continuously provided on the outer edge portion of the surface of the second lid member 95 on the housing body 91 side.
- the second lid member 95 is fixed to the housing main body 91 by fitting the claw 95 b provided on the convex portion 95 a into the concave portion 93 d provided on the inner peripheral surface of the frame portion 93.
- an output unit 30 Between the housing body 91 and the first lid member 94, an output unit 30, a first worm 40, a second worm 50, a first drive mechanism 60, a second drive mechanism 70, and the like are arranged. Specifically, it is as follows.
- support protrusions 111, 112, and 113 are provided in a straight line in the front-rear direction at a position close to the convex portion 92 c side from the center of the surface on the first lid member 94 side of the middle plate portion 92. ing.
- the support protrusion 111 is provided on the side where the connector cover portion 93 a is provided
- the support protrusion 113 is provided on the side where the barrel-shaped protrusion 93 b is provided
- the support protrusion 112 is provided between the support protrusion 111 and the support protrusion 113.
- the support protrusion 113 has a groove that matches the outer shape of the fixing member 74.
- FIG. 14 shows an exploded perspective view of only the fixing member 74 and the support protrusion 113.
- the position where the protrusion 74a of the fixing member 74 is inserted is the inner side of the support protrusion 113 in the thickness direction corresponding to the shape of the protrusion 74a.
- a pair of support portions 113a projecting from each other is formed.
- the fixing member 74 is fixed so that rotation is suppressed by being inserted into the groove of the support protrusion 113 as described above while being fitted to the shaft member 71, and the position of the shaft member 71 is fixed.
- the fixing member 55 is fixed to the support protrusion 111 in the same manner as the fixing member 74. That is, the support protrusion 111 has a groove that matches the outer shape of the fixing member 55, and the fixing member 55 is inserted into the groove while being fitted to the second worm 50 so that rotation is suppressed. The position of the second worm 50 is fixed. However, the fixing member 55 and the fixing member 74 are fixed so that the convex portion 74 a of the fixing member 74 and the convex portion of the fixing member 55 are opposite to the second worm 50 and the shaft member 71.
- the second worm 50 and the shaft member 71 are fixed in a state where the shaft portion of the shaft member 71 is inserted into the hollow portion of the second worm 50. And the part in which the gearwheel 52 is not formed among the 2nd worms 50 is supported by the groove
- the output unit 30 is disposed between the casing main body 91 and the first lid member 94 in a state where the constituent members are assembled. That is, as shown in FIG. 6, the output shaft member 31 and the housing member 35 are overlapped, and the bearing 101, the bearing 102, the guide shaft 100, the first worm 40, and the fixing member 45 are attached to the housing member 35 and fixed.
- the shaft portion 61 a of the shaft member 61 fitted with the member 64 is inserted into the hollow portion of the first worm 40. In this state, the guide shaft 100 and the fixing member 64 are supported by a support protrusion provided on the housing 90. Details are as follows.
- a support protrusion 114 is provided at substantially the center of the surface of the middle plate portion 92 on the first lid member 94 side.
- the support protrusions 114 facilitate the assembly of the output unit 30 by supporting the guide shaft 100 when the output unit 30 is disposed.
- the inner peripheral surface of the frame portion 93 where the barrel-shaped convex portion 93b is formed protrudes toward the outer peripheral surface to form the concave portion 115, and the support protrusion 116 having a groove continuous with the concave portion 115 is formed in the middle. It is formed on the plate portion 92.
- One end of the guide shaft 100 is supported by the grooves of the recess 115 and the support protrusion 116.
- a recess (not shown) that is recessed toward the outer peripheral surface is formed on the inner peripheral surface of the frame portion 93 where the connector cover portion 93a is formed, and the other end of the guide shaft 100 is formed in the concave portion.
- the part is supported.
- a support protrusion 117 having a groove matching the outer shape of the fixing member 64 is formed on the surface of the intermediate plate portion 92 on the first lid member 94 side, and the fixing member 64 is inserted into the groove, and the fixing member 64 64 is fixed so that rotation is suppressed.
- the output unit 30 is disposed between the housing body 91 and the first lid member 94.
- the motor 63 has a cylindrical projection 118 erected from the middle plate portion 92 toward the first lid member 94 to be inserted into the center of the core assembly 63 a and fixed.
- the motor 73 is fixed to a cylindrical protrusion 119 erected from the middle plate portion 92 to the first lid member 94 side.
- the transmission gear 62 is inserted into a pin 121 having one end inserted into a recess 120 formed in the middle plate portion 92, and the transmission gear 72 is disposed at one end in a recess 122 formed in the middle plate portion 92. Is inserted into the pin 123 to be inserted.
- the pin 121 overlaps with the rotation shaft of the transmission gear 62, and the pin 123 overlaps with the rotation shaft of the transmission gear 72.
- each member is disposed between the casing main body 91 and the first lid member 94.
- the first worm 40 and the second worm 50 are arranged so that the rotation axis is parallel to the longitudinal direction of the guide shaft 100.
- the motor 63, the motor 73, the transmission gear 62, and the transmission gear 72 are arranged in a direction perpendicular to the longitudinal direction of the first worm 40 and the second worm 50 with respect to the first worm 40 and the second worm 50.
- the protrusion is provided on the casing main body 91 side surface of the lid main body portion 94a.
- the member to be pressed is pressed down.
- the surface of the lid main body 94 a on the side of the housing main body 91 has ribs 130 that contact the fixing member 45, convex portions 131 that contact the fixing member 55, and fixing members 64.
- a projecting portion 132 that contacts the fixing member 74, a projecting portion 134 that contacts the pin 121, and a projecting portion 135 that contacts the pin 123 are formed.
- the fixing member 45, the fixing member 55, the fixing member 64, and the fixing member 74 that also serve as bearings are thus sandwiched and fixed between the intermediate plate portion 92 and the first lid member 94, whereby the first worm 40, The rotating shafts of the two worms 50, the shaft member 61, and the shaft member 71 are prevented from moving, and the operation accuracy of the rotation or movement of the output shaft 33 is improved.
- the pin 121 and the pin 123 are sandwiched and fixed between the intermediate plate portion 92 and the first lid member 94, the lifting of the transmission gear 62 and the transmission gear 72 is suppressed, so that the first drive mechanism 60 and It can be suppressed that the driving force is not properly transmitted from the second drive mechanism 70 to the first worm 40 and the second worm 50.
- the fixing member 45 moves as the output unit 30 moves, the rib 130 that contacts the fixing member 45 is provided over the entire movement range of the fixing member 45. That is, when the first worm 40 moves with the movement of the output unit 30, the fixing member 45 also moves together in a predetermined direction orthogonal to the rotation shaft 33 a of the output shaft 33. During the movement, the fixing member 45 is in contact with the rib 130. Therefore, the fixing member 45 slides with respect to the housing 90 when the output unit 30 and the first worm 40 move together in a predetermined direction. As described above, when the output unit 30 moves, the fixing member 45 abuts against the housing 90 and slides, so that the rotation axis of the first worm 40 is prevented from shifting.
- the fixing member 45 also has a function as a bearing, and is therefore made of a material that is not easily worn. Examples of the material constituting the fixing member 45 include polyacetal.
- the lid main body portion 94a is also formed with a protrusion 136 to be inserted into the recess 115.
- the projection 136 By inserting the projection 136 into the recess 115, the guide shaft 100 is pressed against the connector cover portion 93a by the projection 136, and the position of the guide shaft 100 is prevented from being displaced.
- a protrusion 80a provided on the second lid member 95 side of the middle plate portion 92 is press-fitted into a through hole 80b formed in the circuit board 80, and on the second lid member 95 side of the middle plate portion 92.
- the protrusion 80 d provided is press-fitted into a notch 80 e formed in the circuit board 80, so that the protrusion 80 d is fixed between the housing body 91 and the second lid member 95.
- the end of the protrusion 80 a is inserted into the recess 80 c of the second lid member 95, and the end of the protrusion 80 d is inserted into the recess 80 f of the second lid member 95.
- the electronic components 81, 82, 83 arranged so as to protrude from the position where the first worm 40 or the second worm 50 is arranged are output from the second worm 50. It is arranged on the opposite side to the shaft 33. Specifically, the electronic components 81, 82, 83 are arranged in a space formed by the convex portion 92c. As described above, the second worm 50 is arranged close to the output shaft 33 side, and the electronic parts 81 and 82 which are radial parts in a space formed by the second worm 50 being arranged close to the output shaft 33 side. , 83 is used, the space in the housing 90 is effectively used, and the actuator 20 can be easily downsized.
- the electronic parts 81, 82, 83 which are radial parts, the motor 63, the motor 73, and the like are also orthogonal to the first worm 40 and the second worm 50 in the longitudinal direction. It is arranged in the direction to do.
- a member having a large volume among the members constituting the actuator 20 is arranged in a direction perpendicular to the longitudinal direction with respect to the first worm 40 and the second worm 50, thereby reducing the length of the actuator 20 in the front-rear direction. Can be shortened. If the length of the actuator 20 in the front-rear direction can be shortened, the length of the lamp 1 in the front-rear direction can be shortened, so that benefits such as widening of the interior space can be obtained.
- the casing 90 of the actuator 20 includes the barrel-shaped convex portion 93b, the attached pieces 91a and 91a, and the attached pieces 94d and 94d.
- the barrel-shaped convex portion 93 b is inserted into the through hole 15 a of the bracket 15. Thereafter, the actuator 20 is rotated so as to press against the bracket 15 side with the barrel-shaped convex portion 93b as a fulcrum, and the bolts 15c are inserted into the through holes of the attached pieces 91a, 91a and the attached pieces 94d, 94d as shown in FIG.
- the bolts 15 c are inserted and screwed into the bracket 15, and the actuator 20 can be fixed to the bracket 15.
- the actuator 20 is provided with three points by the attached pieces 91a and 91a and attached pieces 94d and 94d provided on both sides of the connector 84 and the barrel-shaped convex portion 93b provided on the opposite side of the connector 84. It is supported by the bracket 15.
- FIG. 15A is a diagram illustrating a change in the irradiation range of light from the lamp unit 2 when the lamp unit 2 rotates. For example, when the light from the lamp unit 2 illuminates the position initially indicated by the solid line, the output unit 33 is rotated to rotate the lamp unit 2, thereby indicating the broken line or dotted line according to the rotation direction. Can illuminate the range.
- FIG. 15B is a diagram showing a change in the irradiation range of light from the lamp unit 2 when the lamp unit 2 is shaken forward or backward.
- the light output direction is increased by moving the output shaft 33 forward and shaking the lamp unit 2 forward.
- the range indicated by the dotted line can be illuminated.
- the direction in which the light is emitted can be lowered to illuminate the range indicated by the broken line.
- the actuator of Patent Document 1 uses a pair of worms provided with the output shaft interposed therebetween in order to rotate or move the output shaft. These worms rotate around a rotation axis in a plane perpendicular to the rotation axis of the output shaft when rotating or moving the output shaft. The rotation of the worm is converted into a force in a predetermined direction via a gear or the like and transmitted to the output shaft, and the output shaft rotates or moves.
- the worm and the member including the output shaft are in contact with each other between the worm and the output shaft in a plane parallel to the rotation axis of the output shaft. Therefore, when the worm rotates, a force in a direction almost parallel to the rotation axis of the output shaft is applied to the output shaft. When such a force applied to the output shaft is increased, there is a concern that the output shaft may be rattled.
- the second worm 50 meshes with the inclined rack 39 that is a moving mechanism provided in the output unit 30, and the output shaft extends in a direction perpendicular to the rotation shaft 33 a of the output shaft 33. 33 is moved.
- the inclined rack 39 is formed between the output unit 30 and the second worm 50 on a surface parallel to the rotation shaft 33 a of the output shaft 33. Therefore, when the output shaft 33 is moved by the second worm 50 in this way, the second worm 50 rotates, and a force in a direction almost parallel to the rotation shaft 33 a of the output shaft 33 is applied to the output shaft 33. .
- the actuator 20 since the actuator 20 has a short distance between the output shaft 33 and the second worm 50, the force in the rotational direction of the second worm 50 transmitted from the second worm 50 to the output shaft 33 is small, and the output shaft 33 has a backlash. Suppression is suppressed.
- the inclined rack 39 formed in the output unit 30 is used as a moving mechanism that moves the output shaft 33 in a predetermined direction.
- the inclined rack can easily secure a relative movement range between the member including the inclined rack and the worm even if the distance between the inclined rack and the worm meshing with the inclined rack is short. Therefore, by using the inclined rack 39 formed in the output unit 30 as a moving mechanism for moving the output shaft 33 in a predetermined direction, even if the inclined rack 39 is provided at a position close to the output shaft 33, the output is performed. It becomes easy to secure the movement range of the shaft 33. Accordingly, the second worm 50 and the output shaft 33 can be easily brought close to each other, so that it is easier to suppress the rattling of the output shaft 33.
- the stability of the operation of the lamp unit 2 is improved by suppressing the rattling of the output shaft 33 of the actuator 20 connected to the lamp unit 2 as described above.
- the moving mechanism is not limited to the inclined rack.
- the position of the inclined rack that functions as the moving mechanism is not particularly limited as long as it can be meshed with the second worm.
- the inclined rack is on the line connecting the output shaft and the second worm in the shortest distance. It is preferable to be formed.
- the arrangement position of the electronic component is not limited, it is preferable that the electronic component is provided at the above-described position from the viewpoint of downsizing the actuator and shortening the length in the front-rear direction.
- the bearing housing portion does not have to be opened as described above.
- a part of the bearing housing portion is opened as described above.
- the external shape of the bearing which comprises a self-aligning bearing mechanism is not specifically limited.
- the first axis direction and the second axis direction need only intersect with each other, and the first axis direction and the second axis direction are not limited to a form that is orthogonal.
- the self-aligning bearing mechanism is used as the actuator of the vehicle headlamp, but the use of the self-aligning bearing mechanism and the use of the actuator are not particularly limited.
- the fixing member of this invention is an engaging part which can be engaged with the support body which supports a rotation member.
- the support may have a convex portion, and a concave portion that engages with the convex portion may be formed on the outer peripheral surface of the fixing member.
- the fixing member of the present invention is not limited to the form made of a material having slidability.
- the example which uses a fixing member for a vehicle headlamp was given in the said embodiment, the use of the fixing member of this invention is a support body which rotates the rod-shaped rotation member rotated around the rotating shaft along a longitudinal direction. There is no particular limitation as long as it is an application that is fixed to be rotatable.
- a self-aligning bearing mechanism in which the shaft can be easily centered, a fixing member that can accurately fix a rotating member such as a worm, an actuator in which rattling of the output portion is suppressed, And a lamp provided with the said actuator is provided.
- These self-aligning bearing mechanisms, fixing members, actuators, and lamps are suitably used for vehicle headlamps and the like.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Mounting Of Bearings Or Others (AREA)
- Support Of The Bearing (AREA)
- Transmission Devices (AREA)
Abstract
Description
筐体10は、フロントカバー11とランプハウジング12とバックカバー14とを備える。筐体10の内側の空間は灯室LRとされる。ランプユニット2、ブラケット15、及びアクチュエータ20は灯室LRに収容される。
ランプユニット2は、光源ユニット3、リフレクタ4、投影レンズ5、レンズホルダ6、シェード7、ソレノイド8、及びベースプレート9を主な構成として備える。
ブラケット15は、ランプユニット2とアクチュエータ20との間に配置されてランプユニット2に対向する面とアクチュエータ20に対向する面とを有する板状の取付板16と、取付板16に連続して形成され、正面視においてランプユニット2を囲う枠状の枠部17と、を有する。
図4は、アクチュエータ20から後述する第一蓋部材94を省略した平面図である。図5は、アクチュエータ20の分解斜視図である。図6は、図5に表れている部材のうち一部を拡大して示す分解斜視図である。図7は、収容部材35及び固定部材45のみを示す分解斜視図である。図8は、図7とは異なる方向から見る、収容部材35及び固定部材45のみを示す分解斜視図である。
出力部30は、出力軸部材31と出力軸部材31に重ねられる収容部材35とを備える。
図6に示すように、第一ウォーム40は外周に歯車42を有する。第一ウォーム40は、長手方向に沿った回転軸の周りに回転する棒状の回転部材である。また、第一ウォーム40の長手方向の一方の端部には周方向に沿った溝43が形成されている。溝43には、第一ウォーム40を収容部材35に固定するための固定部材45が嵌められる。さらに、第一ウォーム40は、溝43が形成される側とは反対側の端部が開口した中空状とされ、第一ウォーム40の回転軸に沿って歯車42に囲まれるように不図示の中空部を有する。
図5に示すように、第一駆動機構60は、軸部材61と伝達ギア62とモータ63とを有する。
第二ウォーム50は、長手方向に沿った回転軸の周りに回転する棒状の回転部材である。図5に示すように、第二ウォーム50は外周に歯車52を有する。また、第二ウォーム50の長手方向の一方の端部には周方向に沿った溝53が形成されている。溝53には、第二ウォーム50を筐体90に固定するための固定部材55が嵌められる。さらに、第二ウォーム50は、第一ウォーム40と同様に中空部を有する。
図5に示すように、第二駆動機構70は、軸部材71と伝達ギア72とモータ73とを有する。
回路基板80上には、図示しない所定のパターンの回路が形成され、電子部品81,82,83及びコネクタ84等が搭載される。電子部品81,82,83は、回路基板80上に配置される電子部品の中では大きな部品である。電子部品81,82,83は、例えばラジアル部品とされ、電子部品81及び電子部品82は例えばコンデンサであり、電子部品83は例えばコイルである。コネクタ84は、回路基板80上において前方の中央部に配置される。
図12は筐体90の分解斜視図である。図13は、図12とは異なる方向から見る筐体90の分解斜視図である。筐体90は、筐体本体91と筐体本体91の一方の側に配置される第一蓋部材94と筐体本体91の他方の側に配置される第二蓋部材95とを備える。筐体本体91は、中板部92と中板部92の外周を囲む枠部93とを有する。枠部93は、中板部92の第一蓋部材94側及び第二蓋部材95側に延びるように設けられる。第一蓋部材94は、中板部92の一方の面と枠部93の内周面とで形成される空間を覆い、第二蓋部材95は、中板部92の他方の面と枠部93の内周面とで形成される空間を覆う。
2・・・ランプユニット
3・・・光源ユニット
10・・・筐体
15・・・ブラケット
20・・・アクチュエータ
30・・・出力部
33・・・出力軸
33a・・・回転軸
34a・・・斜歯歯車(回転機構)
35b・・・軸受収容部
35c・・・軸受保持空間
35e・・・内壁
39・・・斜歯ラック(移動機構)
40・・・第一ウォーム
45・・・固定部材
50・・・第二ウォーム
60・・・第一駆動機構
64・・・固定部材
70・・・第二駆動機構
80・・・回路基板
81,82,83・・・電子部品
90・・・筐体
91・・・筐体本体
94・・・第一蓋部材
95・・・第二蓋部材
100・・ガイドシャフト
102・・・軸受
Claims (16)
- 出力軸を有する出力部と、前記出力軸に垂直な面に沿って延在する第一ウォーム及び第二ウォームと、を備え、
前記出力部は、前記第一ウォームに歯合して前記出力軸を所定の回転軸の周りに回転させる回転機構と、前記第二ウォームに歯合して前記出力軸を前記回転軸に直交する方向に移動させる移動機構と、を有し、
前記第一ウォームと前記第二ウォームとは前記出力軸を挟むように配置され、
前記第二ウォームと前記出力軸との距離が前記第一ウォームと前記出力軸との距離より短い
ことを特徴とするアクチュエータ。 - 前記移動機構は、前記出力部のうち前記第二ウォームと対向する面に形成されて前記第二ウォームと歯合する斜歯ラックを有する
ことを特徴とする請求項1に記載のアクチュエータ。 - 前記斜歯ラックが前記出力軸と前記第二ウォームとを最短で結ぶ線上に形成される
ことを特徴とする請求項2に記載のアクチュエータ。 - 回路基板を有し、前記回路基板の一方の面側に前記第一ウォームと前記第二ウォームとが配置され、
前記回路基板上に配置される電子部品のうち前記第一ウォームまたは前記第二ウォームが配置される位置よりも突出して配置される電子部品が前記第二ウォームの前記出力軸とは反対側に配置される
ことを特徴とする請求項1から3のいずれか1項に記載のアクチュエータ。 - 請求項1~4のいずれか1項に記載のアクチュエータと、
光源を有し前記アクチュエータの前記出力軸に接続されるランプユニットと、を備える
ことを特徴とする灯具。 - 軸受と、前記軸受を収容する軸受収容部と、を備え、
前記軸受収容部は、前記軸受が使用されるときに保持される軸受保持空間を有し、
前記軸受が外部から前記軸受保持空間に挿入されるときの前記軸受に挿通される軸の長手方向を第一軸心方向とし、前記軸受が使用されるときの前記軸受に挿通される軸の長手方向を第二軸心方向とするとき、前記第一軸心方向と前記第二軸心方向とは互いに交わる方向であり、
前記軸受保持空間は、前記軸受に挿通される軸の長手方向が前記第一軸心方向から前記第二軸心方向になるように前記軸受が回転可能な空間であり、
前記軸受保持空間を形成する内壁は、前記軸受が使用されるときに前記第二軸心方向への前記軸受の移動を規制する
ことを特徴とする自動調心軸受機構。 - 前記軸受収容部のうち前記第一軸心方向に沿った一方側は、前記軸受が前記外部から前記軸受保持空間に到達するまでの区間において、少なくとも前記軸受に挿通される軸が通る幅で開放されている
ことを特徴とする請求項6に記載の自動調心軸受機構。 - 前記軸受の外形は、前記軸受に挿通される軸の長手方向において中央部が両端部よりも突出した湾曲面である
ことを特徴とする請求項6または7に記載の自動調心軸受機構。 - 前記第一軸心方向と前記第二軸心方向とが直交している
ことを特徴とする請求項6から8のいずれか1項に記載の自動調心軸受機構。 - 請求項6から9のいずれか1項に記載の自動調心軸受機構を有する出力部を備え、
前記出力部は前記軸受に挿通されるガイドシャフトに沿って移動する
ことを特徴とするアクチュエータ。 - 請求項10に記載のアクチュエータと、
光源を有し前記アクチュエータの前記出力部に接続されるランプユニットと、を備える
ことを特徴とする灯具。 - 回転部材を支持体に回転可能に固定する固定部材であって、
前記回転部材の回転軸方向の移動を規制するように前記回転部材を保持し、
前記回転部材が回転可能なように前記回転部材を保持する内周面と、
前記支持体に係合する係合部が設けられる外周面と、を備える
ことを特徴する固定部材。 - 前記回転軸周りに回転させられることで前記係合部が前記支持体に係合して固定される
ことを特徴する請求項12に記載の固定部材。 - 出力軸を有する出力部と、前記出力軸を回転させるウォームと、を備え、
前記ウォームは、固定部材によって回転軸方向の移動を規制されつつ前記出力部に回転可能に固定され、
前記固定部材は、前記ウォームが回転可能なように前記ウォームを保持する内周面と、前記出力部に係合される係合部が設けられる外周面と、を有し、
前記固定部材は前記係合部が前記出力部に係合して固定される
ことを特徴するアクチュエータ。 - 前記出力軸を露出させて前記出力部及び前記ウォームを収容する筐体を備え、
前記出力部及び前記ウォームは前記出力軸の回転軸に直交する所定の方向に共に移動可能であり、
前記固定部材は前記筐体に当接しており、
前記出力部及び前記ウォームが前記所定の方向に共に移動するときに前記固定部材が前記筐体に対して摺動する
ことを特徴とする請求項14に記載のアクチュエータ。 - 請求項14または15に記載のアクチュエータと、
光源を有し前記アクチュエータの前記出力軸に接続されるランプユニットと、を備える
ことを特徴とする灯具。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/062,186 US10962049B2 (en) | 2015-12-25 | 2016-12-02 | Fixing member, self-aligning bearing mechanism, actuator, and lamp |
| EP16878319.9A EP3396205A4 (en) | 2015-12-25 | 2016-12-02 | FASTENING ELEMENT, SELF-ALIGNMENT SUPPORT MECHANISM, ACTUATOR AND LAMP |
| CN201680071974.6A CN108368923B (zh) | 2015-12-25 | 2016-12-02 | 固定部件,自动调心轴承机构,致动器以及灯具 |
| JP2017557841A JP6760965B2 (ja) | 2015-12-25 | 2016-12-02 | 固定部材、自動調心軸受機構、アクチュエータ及び灯具 |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-253501 | 2015-12-25 | ||
| JP2015-253500 | 2015-12-25 | ||
| JP2015253501 | 2015-12-25 | ||
| JP2015253499 | 2015-12-25 | ||
| JP2015253500 | 2015-12-25 | ||
| JP2015-253499 | 2015-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017110426A1 true WO2017110426A1 (ja) | 2017-06-29 |
Family
ID=59089401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2016/085932 Ceased WO2017110426A1 (ja) | 2015-12-25 | 2016-12-02 | 固定部材、自動調心軸受機構、アクチュエータ及び灯具 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10962049B2 (ja) |
| EP (1) | EP3396205A4 (ja) |
| JP (1) | JP6760965B2 (ja) |
| CN (1) | CN108368923B (ja) |
| WO (1) | WO2017110426A1 (ja) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11280118B2 (en) * | 2016-12-19 | 2022-03-22 | Kiekert Ag | Vehicle door lock with gear thrust retainer |
| FR3062612B1 (fr) * | 2017-02-06 | 2020-10-02 | Valeo Vision | Module optique pour vehicule automobile et verrouillage en position d'un composant du module par un element d'enserrement elastiquement deformable |
| US20180334082A1 (en) * | 2017-05-16 | 2018-11-22 | Kun Chau Huang | Heat dissipation device |
| JP6949069B2 (ja) * | 2019-03-14 | 2021-10-13 | 株式会社小糸製作所 | 灯具ユニットおよび車両用灯具 |
| FR3103425B1 (fr) * | 2019-11-27 | 2022-11-04 | Psa Automobiles Sa | Projecteur avant de véhicule automobile comprenant un support multifonction et véhicule associé |
| CN115315372B (zh) * | 2020-03-31 | 2025-06-24 | 三菱电机株式会社 | 旋转调整机构以及前照灯装置 |
| TWI866269B (zh) * | 2023-06-08 | 2024-12-11 | 廣運科技有限公司 | 伺服減速機構 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108368923A (zh) | 2018-08-03 |
| US20180372149A1 (en) | 2018-12-27 |
| US10962049B2 (en) | 2021-03-30 |
| JP6760965B2 (ja) | 2020-09-23 |
| EP3396205A4 (en) | 2019-11-20 |
| JPWO2017110426A1 (ja) | 2018-10-11 |
| EP3396205A1 (en) | 2018-10-31 |
| CN108368923B (zh) | 2021-09-10 |
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