JP2019160603A - Vehicle lamp fitting - Google Patents

Abstract

To inhibit occurrence of shavings when a screw is rotated in a vehicle lamp fitting which enables a support posture of a lamp unit to be adjusted relative to a bracket with the screw.SOLUTION: A vehicle lamp fitting 1 includes: a lamp unit 10; a bracket 32 supporting the lamp unit 10; an adjusting screw 26 which is inserted into a through hole formed at the bracket 32 and used to adjust a support posture of the lamp unit 10 relative to the bracket 32; and an interposing member 40 interposed between the adjusting screw 26 and an inner peripheral surface of the through hole. The interposing member 40 is formed by a material having hardness lower than the bracket 32.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicular lamp.

  Conventionally, a plurality of lamp units are housed in a lamp chamber composed of a lamp body and an outer cover in a manner rotatably supported by a common bracket, and the optical axis of each lamp unit is adjusted with respect to the bracket. Is disclosed.

JP 2017-103012 A

  In the vehicular lamp as described above, for example, when the bracket is formed of metal and the adjusting screw is formed of resin, when the adjusting screw is rotated, a part of the adjusting screw is rubbed against the bracket, and the adjusting screw There is a possibility that part of If the shavings generated at this time remain in the lamp chamber, there may be a problem with the performance and appearance of the lamp.

  The present invention has been made in view of such a situation, and an object of the present invention is to generate shavings when a screw is rotated in a vehicular lamp that can adjust a support posture of a lamp unit with respect to a bracket using a screw. It is to provide a technology to suppress.

  In order to solve the above-described problems, a vehicular lamp according to an aspect of the present invention includes a lamp unit, a bracket that supports the lamp unit, and a support posture with respect to the bracket of the lamp unit that is inserted into a through-hole formed in the bracket. And an interposition member sandwiched between the screw and the inner peripheral surface of the through hole, the interposition member formed of a material having a hardness lower than that of the bracket.

  The screw includes an elastic piece separated from the shaft portion, and the outer diameter of the elastic piece is smaller than the inner diameter of the interposed member when inserted into the through hole, and the outer diameter of the elastic piece is inserted after passing through the through hole. The interposition member may support the end of the opposing elastic piece in a rotatable manner.

  The bracket may be made of metal, and the screw and the interposed member may be made of resin.

  The interposed member may include a drop prevention portion that is locked to the inner peripheral surface of the through hole.

  ADVANTAGE OF THE INVENTION According to this invention, in the vehicle lamp which can adjust the support attitude | position of the lamp unit with respect to a bracket using a screw, the technique which suppresses generation | occurrence | production of the shavings when a screw is rotated can be provided.

1 is a schematic vertical sectional view of a vehicular lamp according to an embodiment of the present invention. It is a schematic sectional drawing for demonstrating the support structure of the adjusting screw by a bracket. It is the schematic for demonstrating an intervention member.

  Hereinafter, a vehicular lamp according to an embodiment of the present invention will be described in detail with reference to the drawings. In the present specification, when terms indicating directions such as “up”, “down”, “front”, “back”, “left”, “right”, “inside”, “outside”, etc. are used, It means the direction in the posture when the vehicular lamp is mounted on the vehicle.

  FIG. 1 is a schematic vertical sectional view of a vehicular lamp 1 according to an embodiment of the present invention. The vehicular lamp 1 according to the present embodiment is, for example, a vehicular headlamp device. The vehicle headlamp device has a pair of lamp units arranged on the left and right sides in front of the vehicle. Since the pair of lamp units have substantially the same configuration except that they have a symmetrical structure, FIG. 1 shows the structure of one lamp unit as the vehicular lamp 1.

  The vehicular lamp 1 includes a lamp body 2 having a front opening and an outer cover 4 that covers the front opening of the lamp body 2. The outer cover 4 is made of, for example, a translucent resin material. The lamp body 2 and the outer cover 4 form a lamp chamber 6. In the lamp chamber 6, a lamp unit 10, an extension member 30 for concealing the internal structure of the vehicular lamp 1, and a bracket 32 that supports the lamp unit 10 in the lamp chamber 6 are accommodated.

  The bracket 32 is moved vertically and horizontally with respect to the lamp body 2 by a pivot 42 positioned at the upper right (upper left in the lamp front view, the same applies hereinafter) and two aiming screws 44 positioned at the upper left and lower right with respect to the lamp body 2. It is supported so as to be rotatable in the direction. The pivot 42 has a proximal end fixed to the lamp body 2 and a distal end engaged with a spherical step bearing 46 attached to the bracket 32. Further, the base end portion of the aiming screw 44 is rotatably supported by the lamp body 12, and the tip end portion thereof is screwed with an aiming nut 48 attached to the bracket 32.

  The lamp unit 10 is a so-called projector-type lamp unit, and uses an LED as a light source. In the illustrated example, one lamp unit 10 is provided in the lamp chamber 6, but a plurality of lamp units 10 may be provided in the lamp chamber 6, and they may be supported by a common bracket 32.

  The lamp unit 10 includes an LED 17, a reflector 18, a base member 20, and a projection lens 22.

  The base member 20 is formed by die casting using a metal whose main component is aluminum, and the LED 17 and the reflector 18 are fixed to the upper surface thereof.

  The LED 17 may be, for example, a white LED in which the LED chip 15 is mounted on the circuit board 16. The LED 17 is provided on the upper surface of the base member 20 so as to be positioned on the optical axis O in a state in which the light emission direction is directed in a direction perpendicular to the optical axis O of the lamp unit 10. The LED chip 15 is supplied with power through a wiring pattern formed on the circuit board 16.

  The reflector 18 is formed in a semi-dome shape using, for example, polycarbonate, and is disposed above the LED 17. The reflector 18 has on its inner surface a reflecting surface 18a having a shape based on a spheroid that condenses and reflects the light from the LED 17 forward and toward the optical axis Ax.

  The projection lens 22 is fixed to the tip of the base member 20. The projection lens 22 is a plano-convex aspheric lens having a convex front surface and a flat rear surface, and irradiates the light source image formed on the rear focal plane in front of the lamp as a reverse image.

  The lamp unit 10 of the present embodiment is a projector-type lamp unit having a reflecting surface shaped based on a spheroid. However, the structure of the lamp unit 10 is not particularly limited, and may be a parabolic lamp unit having a reflecting surface shaped based on a paraboloid of revolution. The lamp unit 10 may be a direct-type lamp unit or the like.

  The vehicular lamp 1 according to the present embodiment further includes a support plate 24, a stepped screw 50, and an adjusting screw 26. These are members for adjusting the posture of the lamp unit 10 with respect to the bracket 32.

  The support plate 24 is fixed to the rear portion of the base member 20. In the present embodiment, the support plate 24 has a shape bent at two places in a vertical sectional view, but the shape is not particularly limited. The upper part of the support plate 24 is fastened to the bracket 32 by a stepped screw 50. The stepped screw 50 is provided with a washer that can be elastically deformed in the screw tightening direction. This washer is composed of a wave washer formed so that the waveform is repeated over its entire circumference.

  A substantially hemispherical protrusion 52 is formed on the front side of the bracket 32. The protrusion 52 is in contact with the rear surface of the support plate 24 and allows the lamp unit 10 to rotate in the vertical direction. In other words, the protrusion 52 functions as a rotation fulcrum of the lamp unit 10.

  The adjusting screw 26 is supported by the bracket 32 so that its base end portion 26a is rotatable. Further, a screw is formed at the tip portion 26 b of the adjusting screw 26, and the tip portion 26 b is screwed into a self-locking nut 28 provided at the lower portion of the support plate 24.

  When the adjusting screw 26 is rotated, the posture of the lamp unit 10 with respect to the bracket 32 can be adjusted with the protrusion 52 as a fulcrum. Thereby, the optical axis adjustment (aiming adjustment) of the lamp unit 10 can be performed.

  FIG. 2 is a schematic cross-sectional view for explaining the support structure of the adjusting screw 26 by the bracket 32. As shown in FIG. 2, the bracket 32 is provided with a through hole 32a, and the adjusting screw 26 is inserted into the through hole 32a. In the present embodiment, the bracket 32 is formed of a metal such as aluminum. The adjusting screw 26 is made of a resin such as nylon, polyacetal, or polycarbonate.

  As shown in FIG. 2, the base end portion 26a of the adjusting screw 26 includes a shaft portion 26c, an elastic piece 26d, and a locking portion 26e. The elastic piece 26d is an umbrella-shaped member, only the tip is connected, and the other part is separated from the shaft part 26c. When the adjusting screw 26 is inserted into the through hole 32a of the bracket 32, the elastic piece 26d is reduced in diameter, and after inserting the through hole 32a, the elastic piece 26d is increased in diameter. The locking portion 26e is a flange-like member extending in the radial direction from the rear end portion of the shaft portion 26c. After the adjusting screw 26 is inserted into the through hole 32a of the bracket 32, the adjusting screw 26 is engaged with the bracket 32. Stop.

  The vehicular lamp 1 according to this embodiment includes an interposed member 40 between the adjusting screw 26 and the inner peripheral surface 32b of the through hole 32a. The intervention member 40 is formed of a material having a lower hardness than the bracket 32. The intervention member 40 may be formed of a resin such as nylon.

  FIG. 3 is a schematic view for explaining the intervention member 40. The interposition member 40 is a substantially annular member having an opening 40a for inserting the adjusting screw 26 in the center. The interposition member 40 is assembled to the bracket 32 as shown in FIG. 2 by inserting the through hole 32a from the lamp unit side of the bracket 32. At the end of one side of the interposition member 40 (the side where the lamp unit 10 is located during assembly), a drop prevention portion 40b is formed that is locked to the inner peripheral surface 32b of the through hole 32a along the outer edge portion. ing. Further, a slit 40c is formed on the other side of the interposed member 40 in order to facilitate the insertion of the interposed member 40 into the through hole 32a. Also, an end portion 40d that is locked to the inner peripheral surface 32b of the through hole 32a is formed along the outer edge portion at the other end portion.

  When the lamp unit 10 is assembled to the bracket 32, the bracket 32 and the upper part of the support plate 24 are fastened with the stepped screw 50, and then the adjusting screw 26 is inserted into the through hole 32a, and the leading end portion 26b of the adjusting screw 26 is inserted. Is screwed onto the self-locking nut 28. When the adjusting screw 26 is inserted through the through hole 32a, the outer diameter of the elastic piece 26d of the adjusting screw 26 is smaller than the inner diameter of the interposition member 40, and after the through hole 32a is inserted, the outer diameter of the elastic piece 26d. Becomes larger than the inner diameter of the interposed member 40. As a result, the bracket 32 and the interposed member 40 are sandwiched between the rear end portion 26f of the elastic piece 26d and the locking portion 26e. A facing portion 40e facing the rear end portion 26f of the elastic piece 26d in the interposed member 40 supports the elastic piece 26d in a rotatable manner.

  In the present embodiment, the facing portion 40e of the interposition member 40 supports the elastic piece 26d in a rotatable manner. Therefore, when the adjusting screw 26 is rotated to adjust the optical axis, the rear end portion 26f of the elastic piece 26d of the adjusting screw 26 slides on the facing portion 40e of the interposed member 40. At this time, according to the present embodiment, since the interposed member 40 and the adjusting screw 26 are both formed of resin, even if the elastic piece 26d of the adjusting screw 26 rubs against the interposed member 40, the elastic piece 26d. Is difficult to cut, and as a result, generation of shavings of the adjusting screw 26 can be suppressed.

  If the adjusting screw 26 is inserted directly into the through hole 32a of the bracket 32 without providing the interposition member 40, the metal bracket 32 and the elastic piece 26d of the resin adjusting screw 26 are rubbed. Become. In this case, since the relatively hard bracket 32 and the relatively soft adjusting screw 26 are rubbed, the adjusting screw 26 is scraped and shavings are easily generated. According to the vehicular lamp 1 according to the present embodiment, the interposition member 40 formed of a resin having a lower hardness than the metal bracket 32 is interposed between the adjusting screw 26 and the inner peripheral surface 32b of the through hole 32a. By pinching, generation of shavings of the adjusting screw 26 is prevented.

  The present invention has been described above based on the embodiment. It should be understood by those skilled in the art that these embodiments are exemplifications, and that various modifications can be made to the combination of each component and each processing process, and such modifications are also within the scope of the present invention.

  In the above-described embodiment, the bracket 32 is formed of metal and the interposed member 40 is formed of resin. However, the combination of the materials forming the bracket 32 and the interposed member 40 is not limited to this, and the interposed member 40 is It is sufficient that the bracket 32 is made of a material whose hardness is lower than that of the bracket 32. Moreover, the adjusting screw 26 and the interposition member 40 may be formed with the same material, and may be formed with a different material.

  DESCRIPTION OF SYMBOLS 1 Vehicle lamp, 2 Lamp body, 4 Outer cover, 6 Lamp chamber, 10 Lamp unit, 12 Lamp body, 17 LED, 18 Reflector, 20 Base member, 22 Projection lens, 24 Support plate, 26 Adjusting screw, 28 Self Locking nut, 30 extension member, 32 bracket, 40 interposition member, 42 pivot, 44 aiming screw, 46 spherical step bearing, 48 aiming nut, 50 stepped screw, 52 protrusion.

Claims (4)

A lamp unit,
A bracket for supporting the lamp unit;
A screw for adjusting a support posture of the lamp unit with respect to the bracket, which is inserted into a through-hole formed in the bracket;
An interposition member sandwiched between the screw and the inner peripheral surface of the through hole, the interposition member formed of a material having a lower hardness than the bracket;
A vehicular lamp characterized by comprising:   The screw includes an elastic piece separated from a shaft portion, and an outer diameter of the elastic piece is smaller than an inner diameter of the interposed member when inserted into the through hole, and the elastic piece of the elastic piece is inserted after passing through the through hole. 2. The vehicular lamp according to claim 1, wherein an outer diameter is larger than an inner diameter of the interposed member, and the interposed member rotatably supports an end portion of the opposing elastic piece. The bracket is formed of metal;
The vehicular lamp according to claim 1, wherein the screw and the interposed member are made of resin.   The vehicular lamp according to any one of claims 1 to 3, wherein the intervention member includes a drop prevention portion that is locked to an inner peripheral surface of the through hole.

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