WO2024101368A1 - Gabarit et procédé de fabrication de phare de véhicule - Google Patents

Gabarit et procédé de fabrication de phare de véhicule Download PDF

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Publication number
WO2024101368A1
WO2024101368A1 PCT/JP2023/040120 JP2023040120W WO2024101368A1 WO 2024101368 A1 WO2024101368 A1 WO 2024101368A1 JP 2023040120 W JP2023040120 W JP 2023040120W WO 2024101368 A1 WO2024101368 A1 WO 2024101368A1
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WO
WIPO (PCT)
Prior art keywords
hole
jig
base
diameter portion
board
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Application number
PCT/JP2023/040120
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English (en)
Japanese (ja)
Inventor
龍治郎 生田
Original Assignee
株式会社小糸製作所
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Filing date
Publication date
Application filed by 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Publication of WO2024101368A1 publication Critical patent/WO2024101368A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/39—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes

Definitions

  • the present invention relates to a jig and a method for manufacturing a vehicle headlamp.
  • Vehicle headlamps are known that reflect light from a light source with a reflector and irradiate it ahead of the vehicle via a projection lens.
  • a vehicle headlamp is disclosed in the following Patent Document 1.
  • a circuit board on which the light source is mounted is placed on a base plate of a heat sink, and the reflector is fixed to the base plate so as to cover the light source from above.
  • a hole is formed in the base plate, and a fixing pin is provided on the surface of the reflector that comes into contact with the base plate, and the reflector is fixed to the base plate by the fixing pin engaging with the hole in the base plate.
  • a positioning pin provided on a reflector may pass through a hole in a circuit board and be inserted into a hole in a base plate of a heat sink, and the reflector may be fixed to the base plate by the positioning pin.
  • the hole in the circuit board may be larger in diameter than the hole in the base plate, and the circuit board may be positioned relative to the base plate before the reflector is fixed to the base plate by the positioning pin.
  • a cylindrical jig may be used to position the circuit board, and in this case, the jig is inserted into the hole in the base plate through the hole in the circuit board.
  • the circuit board may shift in the in-plane direction of the base plate relative to the jig and base plate, and part of the inner surface of the hole in the circuit board may be positioned flush with part of the inner surface of the hole in the base plate.
  • reflectors tend to be made of resin, and the shape of the positioning pin tends to taper toward the tip located in the hole in the base plate due to the molding process, and the peripheral surface of the positioning pin tends to be a tapered surface.
  • the positioning pin When such a positioning pin is inserted into the hole of the base plate through the hole of the circuit board, if the circuit board is shifted in the in-plane direction relative to the base plate and a part of the inner peripheral surface of the hole of the circuit board is positioned flush with a part of the inner peripheral surface of the hole of the base plate, the positioning pin may abut against the upper edge of the hole of the circuit board at the above-mentioned flush position, and may abut against the upper edge of the hole of the base plate at a tip beyond this abutment part.
  • the positioning pin may not be inserted to the original fixed position of the hole of the base plate, and may be fixed at a position different from the fixed position, and the reflector may not be fixed at the correct position relative to the base plate.
  • the reflector may be shifted relative to the light source, and the light distribution pattern of the light may not be projected to the specified position in front of the vehicle. For this reason, it is required to position the circuit board on the heat sink so that the deviation of the reflector relative to the light source is suppressed.
  • the present invention aims to provide a jig and a method for manufacturing a vehicle headlamp that can position a circuit board on a heat sink so as to prevent misalignment of the reflector relative to the light source.
  • the jig of the present invention is a jig including a board unit including a light source and a circuit board in which a first board hole is provided, a heat sink including a base plate on which the board unit is arranged and in which a first base hole having a diameter smaller than that of the first board hole is provided, and a reflector unit including a reflector that covers the light source and reflects at least a portion of the light from the light source and a first positioning pin that penetrates the first board hole and is inserted into the first base hole, the jig including a first jig pin that positions the circuit board on the base plate, the first jig pin being characterized in that it has a first large diameter portion that is inserted into the first board hole and has a diameter larger than that of the first base hole, and a first small diameter portion that is inserted into the first base hole and is located inside the first large diameter portion when the first jig pin is viewed along the longitudinal axis direction of the
  • the manufacturing method of the vehicle headlamp of the present invention includes a substrate unit including a light source and a circuit substrate in which a first substrate hole is provided, a heat sink including a base plate on which the substrate unit is arranged and in which a first base hole having a diameter smaller than that of the first substrate hole is provided, and a reflector unit including a reflector that covers the light source and reflects at least a part of the light from the light source and a first positioning pin that penetrates the first substrate hole and is inserted into the first base hole, and includes a positioning step of positioning the circuit substrate on the base plate using a jig including a first jig pin before the first positioning pin penetrates the first substrate hole and is inserted into the first base hole, and the first jig pin includes a first large diameter portion that is inserted into the first substrate hole and has a diameter larger than that of the first base hole, and a first small diameter portion that is inserted into the first base hole and is located inside the first large diameter portion when
  • the first jig pin can position the circuit board on the base plate by inserting the first large diameter portion into the first board hole and the small diameter portion into the first base hole.
  • the first large diameter portion has a diameter larger than the first base hole, so that the periphery of the first board hole surrounds the first base hole when the circuit board is viewed from above. Therefore, when the tapered first positioning pin penetrates the first board hole and is inserted into the first base hole, the outer peripheral surface of the first positioning pin can be prevented from unnecessarily contacting the edge of the first board hole, and the first positioning pin can be inserted up to the original fixed position of the first base hole and fixed to the original fixed position.
  • the circuit board can be positioned on the base plate so that the deviation of the reflector relative to the light source is suppressed.
  • misalignment of the reflector relative to the light source can be suppressed, and the light distribution pattern can be prevented from being projected at a predetermined position in front of the vehicle.
  • the circuit board may further include a second board hole
  • the base plate may further include a second base hole smaller than the second board hole
  • the reflector unit may further include a second positioning pin that passes through the second board hole and is inserted into the second base hole
  • the jig may include a second jig pin that is inserted into the second board hole and has a second large diameter portion that is larger in diameter than the second base hole, and a second small diameter portion that is inserted into the second base hole and is located inside the second large diameter portion when the second jig pin is viewed along the longitudinal axis of the second jig pin.
  • the second large diameter portion of the second positioning pin is inserted into the second board hole, and the second small diameter portion is inserted into the second base hole, so that the second jig pin can position the circuit board on the base plate.
  • the circuit board is positioned on the base plate by the first jig pin and the second jig pin, so that the positional deviation of the circuit board with respect to the base plate can be further suppressed, and the rotation of the circuit board with respect to the base plate in the direction around the axis perpendicular to the main surface of the circuit board can be suppressed.
  • the second large diameter portion has a larger diameter than the second base hole, so that the periphery of the second board hole surrounds the second base hole when the circuit board is viewed from above. Therefore, like the first positioning pin, it is possible to suppress the outer peripheral surface of the tapered second positioning pin from unnecessary contact with the edge of the second board hole, and the second positioning pin can be inserted up to the original fixed position of the second base hole and fixed to the original fixed position. This allows the reflector to be fixed in the correct position relative to the base plate, and prevents the reflector from shifting relative to the light source.
  • the second substrate hole may be aligned with the first substrate hole in a predetermined direction, and the second base hole may be aligned with the first base hole in a predetermined direction.
  • the present invention provides a jig and a method for manufacturing a vehicle headlamp that can position a circuit board on a heat sink so as to prevent misalignment of the reflector relative to the light source.
  • FIG. 1 is a schematic perspective view of a vehicle headlamp according to an embodiment of the present invention
  • FIG. 2 is a top view of the vehicle headlamp shown in FIG. 1
  • FIG. 2 is an exploded perspective view of the vehicle headlamp shown in FIG. 1
  • 1 is a perspective view of a heat sink on which a circuit board is disposed, viewed obliquely from above and behind
  • FIG. 5 is a top view of the circuit board and heat sink shown in FIG. 4
  • 3 is a vertical cross-sectional view of the periphery of the positioning pin taken along line AA shown in FIG. 2
  • 3 is a vertical cross-sectional view of the periphery of the positioning pin taken along line BB shown in FIG. 2.
  • 3 is a diagram showing a state in which a jig is inserted into each of the round holes of the circuit board and the base plate taken along line AA in FIG. 2 in a jig insertion step.
  • 3 is a diagram showing a state in which a jig is inserted into each of the long holes of the circuit board and the base plate along the line BB shown in FIG. 2 in a jig insertion step.
  • 3A to 3C are diagrams showing modified examples of jigs to be inserted into the circular holes of the circuit board and the base plate taken along line AA in FIG. 2 in the jig insertion step.
  • FIG. 1 is a schematic perspective view of a vehicle headlight in this embodiment
  • FIG. 2 is a top view of the vehicle headlight shown in FIG. 1
  • FIG. 3 is an exploded perspective view of the vehicle headlight shown in FIG. 1.
  • Vehicle headlights 1 are generally provided on the left and right sides of the front of a vehicle, and the left and right vehicle headlights 1 are configured to be roughly symmetrical in the left-right direction. For this reason, in this embodiment, the left vehicle headlight 1 will be described. Note that in this specification, “right” means the right side in the forward direction of the vehicle, and “left” means the left side in that forward direction.
  • the vehicle in this embodiment is an automobile.
  • the vehicle headlamp 1 comprises a lamp unit 10 and a housing (not shown) that houses the lamp unit 10. Light emitted from the lamp unit 10 passes through the front surface of the housing.
  • the lighting unit 10 includes a board unit 30, a heat sink 40 on which the board unit 30 is disposed, a reflector unit 50 disposed on the heat sink 40, and a projection lens 60 fixed to the reflector unit 50.
  • the board unit 30 includes a circuit board 31 and a light source 35.
  • the circuit board 31 is a plate-like member extending horizontally, and has a generally rectangular shape that is long in the left-right direction.
  • the circuit board 31 is connected to the light source 35 by wiring.
  • the light source 35 is mounted on the circuit board 31.
  • the light source 35 is composed of, for example, an LED (Light Emitting Diode). In this embodiment, an example is shown in which three light sources 35 are lined up in the left-right direction.
  • the light source 35 is arranged on the base plate 41 of the heat sink 40 together with the circuit board 31.
  • the heat sink 40 includes a base plate 41 on which the circuit board 31 and the light source 35 are arranged, and a plurality of heat dissipation fins 47 arranged in parallel in the left-right direction on the side of the base plate 41 opposite the circuit board 31.
  • the base plate 41 and the heat dissipation fins 47 are made of metal.
  • the base plate 41 extends horizontally and has a rectangular shape that is long in the left-right direction.
  • the top surface of the base plate 41 is in surface contact with the circuit board 31 and the light source 35, and the circuit board 31 is fixed to the base plate 41 with screws 70.
  • the multiple heat dissipation fins 47 are integral with the base plate 41 and extend downward from the back surface of the base plate 41.
  • the reflector unit 50 includes a rectangular frame-shaped fixing part 51 to which the outer peripheral flange part of the projection lens 60 is fixed, which is longer in the left-right direction than in the up-down direction, a rectangular frame-shaped main body part 53 that extends rearward from the rear surface of the fixing part 51 and is disposed on the base plate 41, and a reflector 55 that is integral with the main body part 53.
  • a reflector unit 50 is made of resin.
  • the main body 53 is located above a portion of the circuit board 31. For this reason, in FIG. 2, a portion of the circuit board 31 is shown by a dashed line. As shown in FIG. 2, the main body 53 is provided with positioning pins 57a and 57b. The positioning pins 57a and 57b are provided on the surface of the main body 53 that is placed on the base plate 41, and are therefore shown by dashed lines in FIG. 2. The positioning pins 57a and 57b protrude from that surface toward the circuit board 31. The positioning pins 57a and 57b are aligned along the alignment direction of the light sources 35.
  • the first positioning pin 57a passes through a first board hole 81a (to be described later) of the circuit board 31 and engages with a first base hole 91a (to be described later) of the base plate 41.
  • the second positioning pin 57b passes through a second board hole 81b (to be described later) of the circuit board 31 and engages with a second base hole 91b (to be described later) of the base plate 41.
  • each reflector 55 is lined up in the left-right direction, similar to the light sources 35, and each reflector 55 is arranged to cover each light source 35 individually from above.
  • each light source 35 is indicated by a dashed line.
  • the reflector is made of a curved plate material, and the surface of the reflector 55 facing the light source 35 is a concave reflective surface that reflects light from the light source 35 without transmitting it.
  • the reflective surface is based on an ellipsoidal surface of revolution, and the light source 35 is disposed at or near the first focal point of the ellipsoidal surface. At least a portion of the light emitted from the light source 35 is reflected by the reflective surface to the projection lens 60.
  • the incident surface of light from the reflective surface is curved convexly toward the rear, and the exit surface is curved convexly toward the front.
  • the projection lens 60 is positioned so that the rear focal point of the projection lens 60 is located at or near the second focal point of the reflective surface of the reflector 55.
  • the lighting unit 10 of this embodiment is a PES (Projector Ellipsoid System) type lighting unit 10.
  • FIG. 4 is a perspective view of the heat sink 40 on which the circuit board 31 is disposed, viewed diagonally from above and behind, and FIG. 5 is a top view of the circuit board 31 and heat sink 40 shown in FIG. 4.
  • the first board hole 81a and the second board hole 81b are arranged side by side in the left-right direction, which is the arrangement direction of the light sources 35, on the circuit board 31. In this embodiment, this direction is the predetermined direction. Therefore, the second board hole 81b is arranged in the predetermined direction with the first board hole 81a.
  • the first board hole 81a is a round hole, and the second board hole 81b is an elongated hole. Therefore, the shape of the first board hole 81a is circular, and the shape of the second board hole 81b is an oval track shape that is longer in the left-right direction than in the front-rear direction. In the front-rear direction, the first board hole 81a is approximately the same length as the second board hole 81b.
  • the base plate 41 has a first base hole 91a at a position corresponding to the first substrate hole 81a, and a second base hole 91b at a position corresponding to the second substrate hole 81b. Therefore, the first base hole 91a and the second base hole 91b are also arranged side by side in the left-right direction, which is the arrangement direction of the light sources 35, i.e., a predetermined direction.
  • the first base hole 91a is a round hole
  • the second base hole 91b is an elongated hole.
  • the shape of the first base hole 91a is circular like the first substrate hole 81a
  • the shape of the second base hole 91b is an oval track shape that is longer in the left-right direction than in the front-rear direction like the second substrate hole 81b.
  • the first base hole 91a is roughly the same size as the second base hole 91b.
  • the first base hole 91a has a smaller diameter than the first board hole 81a. Therefore, when the circuit board 31 arranged on the base plate 41 is viewed from above as shown in FIG. 5, the first base hole 91a is located inside the first board hole 81a, and the periphery of the first base hole 91a is surrounded by the periphery of the first board hole 81a and is located inside the periphery.
  • the first positioning pin 57a penetrates such a first board hole 81a and first base hole 91a. Since the first base hole 91a is located inside the first board hole 81a, the base plate 41 is exposed inside the first board hole 81a. This exposed area may be called the exposed area 41a.
  • the exposed area 41a is located around the entire circumference of the first base hole 91a.
  • the second base hole 91b has a smaller diameter than the second board hole 81b, specifically, the diameter is smaller in both the front-rear and left-right directions than the second board hole 81b. Therefore, when the circuit board 31 arranged on the base plate 41 is viewed from above as shown in FIG. 5, the second base hole 91b is located inside the second board hole 81b, and the periphery of the second base hole 91b is surrounded by the periphery of the second board hole 81b and is located inside the periphery.
  • the second positioning pin 57b is inserted into such second board holes 81b, 81b.
  • the base plate 41 is exposed inside the second board hole 81b.
  • This exposed area may be called the exposed area 41b.
  • the exposed area 41b is located around the entire circumference of the second base hole 91b.
  • FIG. 6 is a vertical cross-sectional view of the periphery of the first positioning pin 57a taken along line A-A in FIG. 2.
  • the first positioning pin 57a passes through the first substrate hole 81a and the first base hole 91a.
  • the shape of the first positioning pin 57a is a truncated cone tapered toward the tip located downward, the peripheral surface of the first positioning pin 57a is a tapered surface, and the horizontal cross-sectional shape is a circle.
  • the peripheral surface of the first positioning pin 57a does not abut the edge and inner peripheral surface of the first substrate hole 81a, but abuts the upper edge 93a of the first base hole 91a on the first substrate hole 81a side over the entire circumference.
  • the first positioning pin 57a passes through the first substrate hole 81a and engages with the first base hole 91a.
  • the reflector unit 50 is positioned on the heat sink 40 in the front-rear and left-right directions.
  • the second positioning pin 57b passes through the second substrate hole 81b and the second base hole 91b.
  • the shape of the second positioning pin 57b tapers toward the tip located downward, and the horizontal cross-sectional shape is an oval track shape that is longer in the left-right direction than in the front-back direction.
  • the peripheral surface of the second positioning pin 57b does not contact the edge or inner peripheral surface of the second substrate hole 81b, but contacts the upper edge 93b of the second base hole 91b on the second substrate hole 81b side over the entire circumference.
  • the second positioning pin 57b is inserted through the second substrate hole 81b and engaged with the second base hole 91b. This positions the reflector unit 50 on the heat sink 40 in the front-back and left-right directions.
  • the tips of the positioning pins 57a, 57b are heat welded to the base plate 41, and the reflector unit 50 is fixed to the base plate 41.
  • the main body 53 may be screwed to the base plate 41, and the reflector unit 50 may be fixed to the base plate 41.
  • FIG. 8 is a flowchart showing the manufacturing method of this embodiment.
  • the manufacturing method of this embodiment includes a positioning process SP1 for positioning the circuit board 31 on the base plate 41, and a fixing process SP2 for fixing the reflector unit 50 to the base plate 41.
  • the circuit board 31 is positioned on the base plate 41 by the jig pins 101, 103 of the jig 100 so that, when the circuit board 31 arranged on the base plate 41 is viewed from above, the first base hole 91a is located inside the first board hole 81a and the second base hole 91b is located inside the second board hole 81b.
  • the positioning process SP1 includes a jig insertion process SP11 and a jig removal process SP12.
  • This step is a step of placing the circuit board 31 on the base plate 41, inserting first jig pins 101 into the first board holes 81a and the first base holes 91a, and inserting second jig pins 103, which are different from the first jig pins 101, into the second board holes 81b and the second base holes 91b.
  • the order of inserting the jig pins 101 and 103 is not particularly limited.
  • Figure 9 shows the first jig pin 101 inserted into the first substrate hole 81a and the first base hole 91a in this process.
  • the process shown in Figure 9 is a process in which the first jig pin 101 is inserted into the first substrate hole 81a and the first base hole 91a before the first positioning pin 57a is inserted into the first substrate hole 81a and the first base hole 91a.
  • the first jig pin 101 includes a first large diameter portion 101a inserted into the first board hole 81a and a first small diameter portion 101b inserted into the first base hole 91a.
  • the first small diameter portion 101b protrudes downward from the first large diameter portion 101a and has a smaller diameter than the first large diameter portion 101a.
  • the first large diameter portion 101a and the first small diameter portion 101b are each cylindrical in shape, and the circumferential surfaces of the first large diameter portion 101a and the first small diameter portion 101b extend in the up-down direction.
  • the first small diameter portion 101b is located inside the first large diameter portion 101a, and the periphery of the first small diameter portion 101b is surrounded by the periphery of the first large diameter portion 101a and is located inside the periphery.
  • the first small diameter portion 101b has a smaller diameter than the first base hole 91a, and when the first jig pin 101 is viewed along the longitudinal direction of the first jig pin 101, the periphery of the first small diameter portion 101b is surrounded by the periphery of the first base hole 91a and is located inside the periphery.
  • the central axis of the first large diameter portion 101a and the central axis of the first small diameter portion 101b are coaxial.
  • the difference between the diameter of the first large diameter portion 101a and the diameter of the first small diameter portion 101b is larger than the difference between the diameter of the first base hole 91a and the diameter of the first small diameter portion 101b.
  • the first large diameter portion 101a has a smaller diameter than the first board hole 81a, and when the first jig pin 101 is viewed along the longitudinal direction of the first jig pin 101, the periphery of the first large diameter portion 101a is surrounded by the periphery of the first board hole 81a and is located inside the periphery.
  • the first large diameter portion 101a has a larger diameter than the first base hole 91a, and when the first jig pin 101 is viewed along the longitudinal axis of the first jig pin 101, the periphery of the first large diameter portion 101a surrounds the periphery of the first base hole 91a and is located outside the periphery. Therefore, the first large diameter portion 101a is not inserted into the first base hole 91a.
  • the first large diameter portion 101a is located in the first board hole 81a, and the first small diameter portion 101b is located in the first base hole 91a, thereby positioning the circuit board 31 on the base plate 41.
  • the first jig pin 101 is inserted into the first board hole 81a and the first base hole 91a, the first large diameter portion 101a protrudes upward from the first board hole 81a.
  • the flat, ring-shaped end face 101c on the first small diameter portion 101b side of the first large diameter portion 101a abuts against the surface of the base plate 41, the peripheral surface of the first large diameter portion 101a does not abut against the inner peripheral surface of the first board hole 81a, and the peripheral surface of the first small diameter portion 101b does not abut against the inner peripheral surface of the first base hole 91a.
  • the first base hole 91a is located inside the first board hole 81a.
  • Figure 10 shows the state in which the second jig pin 103 is inserted into the second substrate hole 81b and the second base hole 91b in this process.
  • the process shown in Figure 10 is a process in which the second jig pin 103 is inserted into the second substrate hole 81b and the second base hole 91b before the second positioning pin 57b is inserted into the second substrate hole 81b and the second base hole 91b.
  • the second jig pin 103 like the first jig pin 101, also includes a second large diameter portion 103a and a second small diameter portion 103b.
  • the second large diameter portion 103a is inserted into the second board hole 81b.
  • the second small diameter portion 103b is inserted into the second base hole 91b and protrudes downward from the second large diameter portion 103a.
  • the horizontal cross-sectional shapes of the second small diameter portion 103b and the second large diameter portion 103a are oval track shapes that are longer in the left-right direction than in the front-back direction, and the second small diameter portion 103b has a smaller diameter than the second large diameter portion 103a, specifically, the diameter is smaller in both the front-back direction and the left-right direction compared to the second large diameter portion 103a.
  • the peripheral surfaces of the second small diameter portion 103b and the second large diameter portion 103a extend in the up-down direction.
  • the second small diameter portion 103b is located inside the second large diameter portion 103a, and the periphery of the second small diameter portion 103b is surrounded by the periphery of the second large diameter portion 103a and located inside the periphery.
  • the central axis of the second large diameter portion 103a and the central axis of the second small diameter portion 103b are coaxial.
  • the difference between the diameter of the second large diameter portion 103a and the diameter of the second small diameter portion 103b is larger than the difference between the diameter of the second base hole 91b in the short direction and the diameter of the second small diameter portion 103b.
  • the second small diameter portion 103b is smaller than the second base hole 91b in the front-rear and left-right directions, and when the second fixture pin 103 is viewed along the longitudinal direction of the second fixture pin 103, the periphery of the second small diameter portion 103b is surrounded by and located inside the periphery of the second base hole 91b.
  • the second large diameter portion 103a is smaller than the second board hole 81b in the front-rear and left-right directions, and when the second fixture pin 103 is viewed along the longitudinal direction of the second fixture pin 103, the periphery of the second large diameter portion 103a is surrounded by and located inside the periphery of the second board hole 81b.
  • the second large diameter portion 103a is larger than the second base hole 91b in the front-rear and left-right directions, and when the second jig pin 103 is viewed along the longitudinal axis of the second jig pin 103, the periphery of the second large diameter portion 103a surrounds the periphery of the second base hole 91b and is located outside the periphery. Therefore, the second large diameter portion 103a is not inserted into the second base hole 91b.
  • the second large diameter portion 103a is located in the second board hole 81b
  • the second small diameter portion 103b is located in the second base hole 91b, thereby positioning the circuit board 31 on the base plate 41.
  • the second large diameter portion 103a protrudes upward from the second board hole 81b.
  • the flat, ring-shaped end face 103c on the second small diameter portion 103b side of the second large diameter portion 103a abuts against the surface of the base plate 41, the peripheral surface of the second large diameter portion 103a does not abut against the inner peripheral surface of the second board hole 81b, and the peripheral surface of the second small diameter portion 103b does not abut against the inner peripheral surface of the second base hole 91b.
  • the second base hole 91b is located inside the second board hole 81b.
  • the circuit board 31 is positioned on the base plate 41 by the first jig pin 101 and the second jig pin 103, and then the circuit board 31 is fixed to the base plate 41 by the screws 70. This completes this step, and the manufacturing method proceeds to the jig removal step SP12.
  • the fixing step SP2 includes a positioning pin insertion step SP21 and a positioning pin fixing step SP22.
  • the first positioning pin 57a penetrates the first board hole 81a and is inserted into the first base hole 91a as shown in Fig. 6, and the second positioning pin 57b penetrates the second board hole 81b and is inserted into the second base hole 91b as shown in Fig. 7.
  • the first jig pin 101 of this embodiment is inserted into the first board hole 81a and has a first large diameter portion 101a with a diameter larger than that of the first base hole 91a, and a first small diameter portion 101b that is inserted into the first base hole 91a and is located inside the first large diameter portion 101a when the first jig pin 101 is viewed along the longitudinal axis of the first jig pin 101.
  • the manufacturing method for the vehicle headlamp of this embodiment also includes a positioning process SP1 in which the circuit board 31 is positioned on the base plate 41 by the first jig pin 101 before the first positioning pin 57a is inserted through the first board hole 81a and engaged with the first base hole 91a.
  • the first jig pin 101 includes the first large diameter portion 101a and the first small diameter portion 101b.
  • the first large diameter portion 101a is inserted into the first board hole 81a and the first small diameter portion 101b is inserted into the first base hole 91a, so that the first jig pin 101 can position the circuit board 31 on the base plate 41.
  • the first large diameter portion 101a has a larger diameter than the first base hole 91a, so that the periphery of the first board hole 81a surrounds the first base hole 91a when the circuit board 31 is viewed from above.
  • the tapered first positioning pin 57a penetrates the first board hole 81a and is inserted into the first base hole 91a, the outer peripheral surface of the first positioning pin 57a can be prevented from unnecessarily contacting the edge of the first board hole 81a, and the first positioning pin 57a can be inserted into the original fixed position of the first base hole 91a and fixed to the original fixed position.
  • the reflector 55 can be fixed to the correct position relative to the base plate 41, and the deviation of the reflector 55 relative to the light source 35 can be suppressed. Therefore, according to this first jig pin 101, the circuit board 31 can be positioned on the base plate 41 so that the deviation of the reflector 55 relative to the light source 35 is suppressed. In addition, the deviation of the reflector 55 relative to the light source 35 can be suppressed, and the light distribution pattern can be prevented from not being projected to a predetermined position in front of the vehicle.
  • the second jig pin 103 of this embodiment is also provided with a second large diameter portion 103a that is inserted into the second substrate hole 81b and has a larger diameter than the second base hole 91b, and a second small diameter portion 103b that is inserted into the second base hole 91b and has a smaller diameter than the second large diameter portion 103a and is located inside the second large diameter portion 103a when the second jig pin 103 is viewed along the longitudinal axis of the second jig pin 103.
  • the second large diameter portion 103a of the second positioning pin 57b is inserted into the second board hole 81b, and the second small diameter portion 103b is inserted into the second base hole 91b, so that the second jig pin 103 can position the circuit board 31 on the base plate 41.
  • the circuit board 31 is positioned on the base plate 41 by the first jig pin 101 and the second jig pin 103, so that the positional deviation of the circuit board 31 relative to the base plate 41 can be further suppressed, and the rotation of the circuit board 31 relative to the base plate 41 in the direction around the axis perpendicular to the main surface of the circuit board 31 can be suppressed.
  • the second large diameter portion 103a has a larger diameter than the second base hole 91b, so that the periphery of the second board hole 81b surrounds the second base hole 91b when the circuit board 31 is viewed from above. Therefore, like the first positioning pin, the outer peripheral surface of the tapered second positioning pin 57b can be prevented from unnecessarily contacting the edge of the second board hole 81b, and the second positioning pin 57b can be inserted up to the original fixed position of the second base hole 91b and fixed in the original fixed position. This allows the reflector to be fixed in the correct position relative to the base plate 41, and prevents the reflector from shifting relative to the light source.
  • the first board hole 81a and the first base hole 91a are round holes.
  • the first jig pin 101 is inserted into the first board hole 81a and the first base hole 91a, so that the circuit board 31 can be positioned on the base plate 41 in the in-plane directions of the base plate 41, which are the front-rear and left-right directions of the vehicle.
  • the shape of the first large diameter portion 101a is cylindrical, and the circumferential surface of the first large diameter portion 101a extends in the vertical direction, but this is not necessarily limited to this.
  • FIG. 11 shows a modified example of the first jig pin 101 that is inserted into the first board hole 81a and the first base hole 91a of the circuit board 31 and the base plate 41, respectively, in the jig insertion process SP11.
  • the shape of the first large diameter portion 101a differs from that of the embodiment.
  • the first large diameter portion 101a in this modified example is a truncated cone shape tapered toward the tip located downward, and the peripheral surface of the first large diameter portion 101a is a tapered surface.
  • the second large diameter portion 103a of the second jig pin 103 may be a truncated cone shape tapered toward the tip located downward, and the peripheral surface of the second large diameter portion 103a may be a tapered surface.
  • first substrate hole 81a and the first base hole 91a may be elongated holes
  • second substrate hole 81b and the second base hole 91b may be round holes.
  • the lighting unit 10 does not need to use a PES optical system.
  • the light source 35 may be disposed on the circuit board 31.
  • the present invention provides a jig that can position a circuit board on a heat sink so as to prevent misalignment of a reflector relative to a light source, and a method for manufacturing a vehicle headlamp, which can be used in fields such as vehicle headlamps for automobiles, etc.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un gabarit (100) comprenant une première broche de gabarit (101) pour positionner une carte de circuit (31) sur une plaque de base (41) dans un phare de véhicule (1). La première broche de gabarit (101) comprend : une première section de grand diamètre (101a) qui est insérée dans un premier trou de carte (81a) et dont le diamètre est supérieur à celui d'un premier trou de base (91a) ; et une première section de petit diamètre (101b) qui est insérée dans le premier trou de base (91a) et qui est située à l'intérieur de la première section de grand diamètre (101a) lorsque la première broche de gabarit (101) est vue dans la direction longitudinale de la première broche de gabarit (101).
PCT/JP2023/040120 2022-11-10 2023-11-07 Gabarit et procédé de fabrication de phare de véhicule WO2024101368A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-180582 2022-11-10
JP2022180582 2022-11-10

Publications (1)

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WO2024101368A1 true WO2024101368A1 (fr) 2024-05-16

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PCT/JP2023/040120 WO2024101368A1 (fr) 2022-11-10 2023-11-07 Gabarit et procédé de fabrication de phare de véhicule

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WO (1) WO2024101368A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015159057A (ja) * 2014-02-25 2015-09-03 スタンレー電気株式会社 車両用灯具
JP2018194466A (ja) * 2017-05-18 2018-12-06 株式会社小糸製作所 灯具ユニットの検査装置および製造方法
JP2022518895A (ja) * 2019-11-29 2022-03-17 ▲華▼域▲視▼▲覺▼科技（上▲海▼）有限公司 位置決め治具及び組み立て体、組み立て方法、カーライト光学アセンブリ、カーライトモジュール

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015159057A (ja) * 2014-02-25 2015-09-03 スタンレー電気株式会社 車両用灯具
JP2018194466A (ja) * 2017-05-18 2018-12-06 株式会社小糸製作所 灯具ユニットの検査装置および製造方法
JP2022518895A (ja) * 2019-11-29 2022-03-17 ▲華▼域▲視▼▲覺▼科技（上▲海▼）有限公司 位置決め治具及び組み立て体、組み立て方法、カーライト光学アセンブリ、カーライトモジュール

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