JP2009217988A - Vehicle headlamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress looseness of a lamp unit to a housing of a vehicle headlamp in vibration of the vehicle headlamp. <P>SOLUTION: The vehicle headlamp includes the lamp unit having a light source and a reflector arranged in a lamp chamber which is demarcated by a cover lens and a housing constructed so as to come around from the front to the side of a vehicle, and the lamp unit is supported by screwing a male screw portion 105a1 of an optical axis adjusting bolt supported by a bearing portion of the vehicle center portion on the rear wall of the housing and a female thread portion of the lamp unit, and by screwing the male screw portion of the optical axis adjusting bolt supported by the bearing portion of the vehicle side face portion on the rear wall of the housing and the female thread portion of the lamp unit. An auxiliary bearing member to support the optical axis adjusting bolt rotatably is arranged on the front side of the bearing portion. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention includes a cover lens that is slanted so as to wrap around from a front surface of a vehicle to a side surface of the vehicle, and includes a light source and a light source in a lamp chamber defined by the vehicle headlight housing and the cover lens. The present invention relates to a vehicular headlamp in which a lamp unit having a reflector for reflecting the light is arranged.

  In particular, the present invention relates to a vehicle headlamp that can suppress rattling of a lamp unit with respect to a vehicle headlamp housing when the vehicle headlamp vibrates.

  More specifically, the present invention relates to a lamp unit for a vehicle headlamp housing when the vehicle headlamp vibrates as the cover lens is slanted so as to go around from the front of the vehicle to the side of the vehicle. The present invention relates to a vehicular headlamp that can avoid an increase in shakiness.

  2. Description of the Related Art Conventionally, a cover lens that is slanted from a front surface of a vehicle to a side surface of the vehicle is provided, and a light source and a light source are provided in a lamp chamber defined by the vehicle headlight housing and the cover lens. 2. Description of the Related Art A vehicle headlamp is known in which a lamp unit having a reflector for reflecting light is arranged. Examples of this type of vehicle headlamp include those described in FIGS. 1 and 2 of JP-A-2001-351413, for example.

  In the vehicle headlamp described in FIG. 1 and FIG. 2 of JP-A-2001-351413, an optical axis adjustment bolt (aiming screw) for adjusting the optical axis of reflected light from the reflector in the vertical direction, An optical axis adjusting bolt (aiming screw) for adjusting the optical axis of the reflected light from the reflector in the left-right direction is provided.

  In detail, in the vehicle headlamp described in FIGS. 1 and 2 of Japanese Patent Laid-Open No. 2001-351413, an optical axis adjusting bolt (aiming) for adjusting the optical axis of the reflected light from the reflector in the vertical direction. Screw) is disposed on the vehicle center side, and an optical axis adjusting bolt (aiming screw) for adjusting the optical axis of the reflected light from the reflector in the left-right direction is disposed on the vehicle side surface side.

  In the vehicle headlamp described in FIGS. 1 and 2 of JP-A-2001-351413, the optical axis adjusting bolt (aiming screw) is rotatable for the vehicle relative to the vehicle headlamp housing. It is supported by a bearing portion on the rear side wall of the headlamp housing.

  That is, in the vehicle headlamp described in FIG. 1 and FIG. 2 of Japanese Patent Laid-Open No. 2001-351413, the root portion of the optical axis adjusting bolt (aiming screw) is a bearing on the rear side wall of the vehicle headlamp housing. The part is supported in a cantilever structure.

  Furthermore, in the vehicle headlamp described in FIGS. 1 and 2 of Japanese Patent Laid-Open No. 2001-351413, the male screw portion of the optical axis adjusting bolt (aiming screw) and the female screw portion (nut) of the lamp unit are screwed together. The lamp unit is supported by an optical axis adjusting bolt (aiming screw).

  In other words, in the vehicle headlamp described in FIGS. 1 and 2 of Japanese Patent Laid-Open No. 2001-351413, the lamp unit is moved by the tip of the optical axis adjusting bolt (aiming screw) supported by the cantilever structure. It is supported.

  By the way, in the vehicle headlamp described in FIG. 1 and FIG. 2 of JP 2001-351413 A, since the cover lens is slanted so as to go from the front of the vehicle to the side of the vehicle, the vehicle The bearing portion of the rear side wall of the vehicle headlamp housing that supports the base portion of the optical axis adjusting bolt (aiming screw) on the side surface side is located at a considerably deeper position (rear position).

  Therefore, in the vehicle headlamp described in FIGS. 1 and 2 of Japanese Patent Laid-Open No. 2001-351413, the rear side wall of the vehicle headlamp housing among the optical axis adjusting bolts (aiming screws) on the vehicle side surface side. The distance between the root portion (fulcrum) supported by the bearing portion and the tip portion (power point) that supports the lamp unit becomes very large.

  As a result, in the vehicle headlamp described in FIG. 1 and FIG. 2 of Japanese Patent Laid-Open No. 2001-351413, the vehicle headlamp housing is generated when the vehicle headlamp vibrates, for example, when the vehicle travels. As a result, the amplitude of the vibration of the lamp unit with respect to the lamp increases, and the rattling of the lamp unit with respect to the vehicle headlamp housing increases.

1 and 2 of JP 2001-351413 A

  In view of the above problems, an object of the present invention is to provide a vehicular headlamp that can suppress rattling of a lamp unit with respect to a vehicular headlamp housing during vibration of the vehicular headlamp. To do.

  In other words, the present invention relates to a lamp unit for a vehicle headlamp housing when the vehicle headlamp vibrates as the cover lens is slanted so as to go from the front of the vehicle to the side of the vehicle. It is an object of the present invention to provide a vehicular headlamp that can avoid an increase in shakiness.

  According to the first aspect of the present invention, the cover lens (102) formed by slanting from the front surface of the vehicle to the side surface of the vehicle is provided, and the vehicle headlamp housing (101) and the cover lens ( 102) defines a lamp chamber (103), and a lamp unit (104) having a light source (1) and a reflector (2) for reflecting light from the light source (1) is provided in the lamp chamber (103). And is supported by bearings (101a1, 101c1) of the vehicle center side portion (101a) of the rear side wall of the vehicle headlight housing (101) so as to be rotatable with respect to the vehicle headlight housing (101). The vehicle side-side portion of the rear side wall of the vehicle headlight housing (101) that is rotatable relative to the vehicle center side optical axis adjusting bolt (105a, 105c) and the vehicle headlight housing (101). 101b) is provided with a vehicle side-side optical axis adjustment bolt (105b) supported by a bearing portion (101b1), and a male screw part (105a1, 105c1) of the vehicle center-side optical axis adjustment bolt (105a, 105c) and a lamp unit ( 104) the vehicle center side female screw portion (3a, 3c) is screwed together, and the male screw portion (105b1) of the vehicle side surface side optical axis adjustment bolt (105b) and the vehicle side surface side female screw portion (3b) of the lamp unit (104). In the vehicle headlamp (100) that supports the lamp unit (104), the vehicle headlamp housing (101) is formed by molding a resin material, and the vehicle side surface side optical axis is formed. An auxiliary bearing member (106) for rotatably supporting the adjustment bolt (105b) is provided separately from the vehicle headlight housing (101), The auxiliary head member (106) is disposed in front of the bearing portion (101b1) of the vehicle side surface portion (101b) of the rear side wall of the vehicle headlight housing (101). ) Is provided.

  According to the second aspect of the present invention, the auxiliary bearing member (106) is attached to the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101). The described vehicle headlamp (100) is provided.

  According to the third aspect of the present invention, the concave portion (106c) for fitting with the bearing portion (101b1) of the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101) is provided as the auxiliary bearing. A vehicle headlamp (100) according to claim 2, characterized in that it is formed on a member (106).

  According to invention of Claim 4, it is a taper shape for contact | abutting to the outer peripheral surface (101b1a) of the bearing part (101b1) of the vehicle side surface side part (101b) of the rear side wall of a vehicle headlamp housing (101). The vehicle headlamp (100) according to claim 3, wherein the contact portion (106c1) is formed on the inner peripheral surface of the concave portion (106c) of the auxiliary bearing member (106).

  According to the fifth aspect of the present invention, the guide rail (106d) for forming the vehicle side projection (3d) on the lamp unit (104) and supporting the vehicle side projection (3d) of the lamp unit (104). ) Is formed on the auxiliary bearing member (106), the vehicle headlamp (100) according to claim 4, is provided.

  According to the sixth aspect of the present invention, there is provided the vehicle headlamp (100) according to the fifth aspect, wherein the auxiliary bearing member (106) is formed of polyacetal (POM).

  The vehicle headlamp (100) according to claim 1 is provided with a cover lens (102) formed by slanting from the front of the vehicle to the side of the vehicle. A lamp chamber (103) is defined by the vehicle headlamp housing (101) and the cover lens (102). Further, a lamp unit (104) having a light source (1) and a reflector (2) for reflecting light from the light source (1) is disposed in the lamp chamber (103).

  In the vehicle headlamp (100) according to claim 1, the vehicle center side portion of the rear side wall of the vehicle headlamp housing (101) is rotatable with respect to the vehicle headlamp housing (101). Vehicle center side optical axis adjusting bolts (105a, 105c) supported by bearing portions (101a1, 101c1) of (101a) are provided. Further, the vehicle side surface side supported by the bearing portion (101b1) of the vehicle side surface side portion (101b) of the rear side wall of the vehicle headlight housing (101) so as to be rotatable with respect to the vehicle headlight housing (101). An optical axis adjustment bolt (105b) is provided.

  That is, in the vehicle headlamp (100) according to claim 1, the root portion (105b2) of the vehicle side surface side optical axis adjusting bolt (105b) is a vehicle on the rear side wall of the vehicle headlamp housing (101). It is supported by a cantilever structure by the bearing portion (101b1) of the side surface portion (101b).

  Furthermore, in the vehicle headlamp (100) according to claim 1, the male screw portion (105a1, 105c1) of the vehicle center side optical axis adjusting bolt (105a, 105c) and the vehicle center side female screw portion of the lamp unit (104). (3a, 3c) are screwed together, and the male screw part (105b1) of the vehicle side optical axis adjusting bolt (105b) and the vehicle side female screw part (3b) of the lamp unit (104) are screwed together. The lamp unit (104) is supported.

  That is, in the vehicle headlamp (100) according to claim 1, by the male screw portion (105b1) of the tip portion (105b3) of the vehicle side optical axis adjustment bolt (105b) supported by the cantilever structure. A lamp unit (104) is supported.

  As described above, in the vehicle headlamp (100) according to claim 1, the cover lens (102) is slanted so as to go around from the front surface of the vehicle to the side surface of the vehicle. The bearing portion (101b1) of the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101) that supports the base portion (105b2) of the optical axis adjusting bolt (105b) is considerably recessed (rear) Position).

  In the vehicle headlamp (100) according to claim 1, the vehicle headlamp housing (101) is formed by molding a resin material. Therefore, in the vehicle headlamp (100) according to claim 1, the bearing portion (101b1) of the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101) is recessed ( If an attempt is made to project from the rear position) to the front position, there is a risk that sink marks will occur in the bearing portion (101b1).

  As a result, in the vehicle headlamp (100) according to claim 1, of the vehicle side surface side optical axis adjustment bolt (105b), the vehicle side surface portion of the rear side wall of the vehicle headlamp housing (101) ( 101b) has a very large distance between the base portion (fulcrum) (105b2) supported by the bearing portion (101b1) and the tip portion (force point) (105b3) that supports the lamp unit (104). When the headlamp (100) vibrates, there is a risk that the rattling of the lamp unit (104) with respect to the vehicle headlamp housing (101) may increase.

  In view of this point, in the vehicle headlamp (100) according to claim 1, the auxiliary bearing member (106) for rotatably supporting the vehicle side-side optical axis adjustment bolt (105b) is provided in the vehicle front. It is provided separately from the lighting housing (101). Specifically, the auxiliary bearing member (106) is disposed on the front side of the bearing portion (101b1) of the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101).

  That is, in the vehicle headlamp (100) according to claim 1, the root portion (105b2) of the vehicle side surface side optical axis adjusting bolt (105b) is a vehicle on the rear side wall of the vehicle headlamp housing (101). In addition to being supported by the bearing portion (101b1) of the side surface portion (101b), an intermediate portion (105b4) between the root portion (105b2) and the tip portion (105b3) of the vehicle side surface side optical axis adjusting bolt (105b). ) Is supported by an auxiliary bearing member (106).

  Therefore, according to the vehicle headlamp (100) of claim 1, the intermediate portion (fulcrum) (105b4) supported by the auxiliary bearing member (106) of the vehicle side surface side optical axis adjustment bolt (105b). ) And the tip portion (power point) (105b3) that supports the lamp unit (104).

  As a result, according to the vehicle headlamp (100) of the first aspect, the lamp unit (104) is mounted on the vehicle headlamp housing (101) when the vehicle headlamp (100) vibrates. Shaking can be suppressed.

  In other words, according to the vehicle headlamp (100) according to claim 1, as the cover lens (102) is slanted so as to go around from the front surface of the vehicle to the side surface of the vehicle, It is possible to avoid the rattling of the lamp unit (104) with respect to the vehicle headlight housing (101) during vibration of the vehicle headlamp (100).

  In the vehicle headlamp (100) according to claim 2, the auxiliary bearing member (106) is attached to the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101).

  That is, in the vehicle headlamp (100) according to claim 2, the auxiliary bearing member (106) is not attached to the side wall of the vehicle headlamp housing (101) on the side surface of the vehicle. It is attached to the vehicle side surface part (101b) of the rear side wall of the headlamp housing (101).

  Therefore, according to the vehicle headlamp (100) of the second aspect, it is not necessary to provide the side wall on the vehicle side in the vehicle headlamp housing (101), and the vibration of the vehicle headlamp (100) is achieved. The rattling of the lamp unit (104) with respect to the vehicle headlamp housing (101) at the time can be suppressed.

  In other words, according to the vehicle headlamp (100) according to claim 2, the cover lens (102) is moved from the front of the vehicle to the vehicle side surface portion of the rear side wall of the vehicle headlamp housing (101) ( 101b), and rattling of the lamp unit (104) with respect to the vehicle headlamp housing (101) during vibration of the vehicle headlamp (100) can be suppressed.

  In the vehicle headlamp (100) according to claim 3, the concave portion (10b1) for fitting with the bearing portion (101b1) of the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101). 106c) is formed on the auxiliary bearing member (106).

  That is, in the vehicle headlamp (100) according to claim 3, when the auxiliary bearing member (106) is attached to the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101), The bearing portion (101b1) of the vehicle side surface side portion (101b) of the rear side wall of the vehicle headlamp housing (101) and the concave portion (106c) of the auxiliary bearing member (106) are fitted.

  Therefore, according to the vehicle headlamp (100) according to claim 3, the auxiliary bearing member (106) is positioned relative to the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101). Can be easily.

  In other words, according to the vehicle headlamp (100) according to claim 3, the bearing portion (through hole) (101b1) that supports the base portion (105b2) of the vehicle side surface side optical axis adjustment bolt (105b). And the bearing portion (through hole) (106a) that supports the intermediate portion (105b4) of the vehicle side optical axis adjusting bolt (105b) can be easily centered.

  In the vehicle headlamp (100) according to claim 4, the vehicle headlamp housing (101) contacts the outer peripheral surface (101b1a) of the bearing portion (101b1) of the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101). A tapered contact portion (106c1) for contact is formed on the inner peripheral surface of the concave portion (106c) of the auxiliary bearing member (106).

  That is, in the vehicle headlamp (100) according to claim 4, the entire inner peripheral surface of the recess (106c) of the auxiliary bearing member (106) is the vehicle side surface of the rear side wall of the vehicle headlamp housing (101). Rather than being brought into contact with the outer peripheral surface (101b1a) of the bearing portion (101b1) of the side portion (101b), a tapered contact portion formed on the inner peripheral surface of the concave portion (106c) of the auxiliary bearing member (106) (106c1) is brought into contact with the outer peripheral surface (101b1a) of the bearing portion (101b1) of the vehicle side surface side portion (101b) of the rear side wall of the vehicle headlamp housing (101).

  Therefore, according to the vehicle headlamp (100) of the fourth aspect, the entire inner peripheral surface of the recess (106c) of the auxiliary bearing member (106) is formed on the rear side wall of the vehicle headlamp housing (101). The base portion (105b2) of the vehicle side surface side optical axis adjustment bolt (105b) is supported with higher accuracy than the case where it is brought into contact with the outer peripheral surface (101b1a) of the bearing portion (101b1) of the vehicle side surface portion (101b). The bearing portion (through hole) (101b1) and the bearing portion (through hole) (106a) supporting the intermediate portion (105b4) of the vehicle side surface side optical axis adjusting bolt (105b) can be centered.

  In the vehicle headlamp (100) according to the fifth aspect, the vehicle side projection (3d) is formed in the lamp unit (104). Furthermore, a guide rail (106d) for supporting the vehicle side projection (3d) of the lamp unit (104) is formed on the auxiliary bearing member (106).

  That is, in the vehicle headlamp (100) according to claim 5, the guide rail for supporting the vehicle side projection (3d) of the lamp unit (104) is the vehicle of the vehicle headlamp housing (101). Rather than being formed on the side wall on the side surface, a guide rail (106d) for supporting the vehicle side surface protrusion (3d) of the lamp unit (104) is formed on the auxiliary bearing member (106).

  Therefore, according to the vehicle headlamp (100) of the fifth aspect, it is necessary to provide the side wall on the vehicle side surface in the vehicle headlamp housing (101), and the guide rail is provided in the vehicle headlamp housing ( 101) need not be provided on the side wall of the vehicle side surface, and the vehicle headlamp (100) is provided by the vehicle side surface projection (3d) of the lamp unit (104) and the guide rail (106d) of the auxiliary bearing member (106). The rattling of the lamp unit (104) with respect to the vehicle headlamp housing (101) at the time of vibration can be suppressed.

  In other words, according to the vehicle headlamp (100) according to claim 5, the cover lens (102) is moved from the front surface of the vehicle to the vehicle side surface portion of the rear side wall of the vehicle headlamp housing (101) ( 101b) and at the time of vibration of the vehicle headlamp (100) by the vehicle side projection (3d) of the lamp unit (104) and the guide rail (106d) of the auxiliary bearing member (106). Shaking of the lamp unit (104) with respect to the vehicle headlamp housing (101) can be suppressed.

  In the vehicle headlamp (100) according to claim 6, the auxiliary bearing member (106) is made of polyacetal (POM). Therefore, according to the vehicle headlamp (100) of the sixth aspect, the intermediate portion (105b4) of the vehicle side-side optical axis adjusting bolt (105b) can be smoothly and rotatably supported, and the lamp The vehicle side projection (3d) of the unit (104) can be supported. In other words, according to the vehicle headlamp (100) according to the sixth aspect, the auxiliary bearing member (106) is formed more than in the case where the auxiliary bearing member (106) is made of, for example, polypropylene (PP). The rigidity can be improved, and the wear resistance of the vehicle side surface side optical axis adjusting bolt (105b) and the lamp unit (104) to the vehicle side surface side projection (3d) can be improved.

  A vehicle headlamp according to a first embodiment of the present invention will be described below. FIG. 1 is a front view of a vehicle headlamp 100 according to the first embodiment, and FIG. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is an exploded perspective view schematically showing the relationship between the vehicle headlamp housing 101, the lamp unit 104, and the like constituting a part of the vehicle headlamp 100 of the first embodiment. FIG. 4 is a perspective view of the auxiliary bearing member 106 constituting a part of the vehicle headlamp 100 of the first embodiment. Specifically, FIG. 4A is a perspective view of the auxiliary bearing member 106 viewed from the right front side and the upper side, and FIG. 4B is a perspective view of the auxiliary bearing member 106 viewed from the right rear side and the upper side.

  FIG. 5 shows the auxiliary bearing member 106 constituting a part of the vehicle headlamp 100 of the first embodiment, the bearing portion 101b1 of the vehicle side surface portion 101b of the rear side wall of the vehicle headlamp housing 101, and the optical axis adjustment. It is the disassembled perspective view which showed the relationship with the volt | bolt 105b roughly. FIG. 6 shows an auxiliary bearing member 106 constituting a part of the vehicle headlamp 100 according to the first embodiment, a bearing portion 101b1 of the vehicle side surface portion 101b of the rear side wall of the vehicle headlamp housing 101, and an optical axis adjustment. It is a schematic horizontal sectional view of the bolt 105b.

  In the vehicle headlamp 100 according to the first embodiment, as shown in FIGS. 1 and 2, the slant is performed so as to go around from the front surface of the vehicle (the lower side in FIG. 2) to the side surface of the vehicle (the left side in FIG. 2). A cover lens 102 configured as described above is provided. A lamp chamber 103 is defined by the vehicle headlamp housing 101 and the cover lens 102. Furthermore, the light source 1, the reflector 2 for reflecting the light from the light source 1, the shade 4 for blocking a part of the reflected light from the reflector 2, and the irradiation direction of the light not blocked by the shade 4 (FIG. 2, a lamp unit 104 having a projection lens 5 for irradiating the lower side 2 and a lens holder 6 is disposed in the lamp chamber 103.

  Specifically, in the vehicle headlamp 100 according to the first embodiment, as shown in FIG. 3, the light source 1 (see FIG. 2), the reflector 2, the shade 4 (see FIG. 2), and the projection lens 5. And the lens holder 6 are fixed to the flange 3 by, for example, screwing, and thereby the lamp unit 104 is configured.

  In the vehicle headlamp 100 according to the first embodiment, light from the light source 1 is reflected by the reflector 2, and light that is not blocked by the shade 4 among the reflected light from the reflector 2 passes through the projection lens 5. The lamp unit 104 is configured to irradiate in the irradiation direction of the vehicle headlamp 100 (lower side in FIG. 2). However, in the vehicle headlamp of the second embodiment, the shade 4 is used instead. The projection lens 5 and the lens holder 6 are omitted, the light from the light source 1 is reflected by the reflector 2, and the reflected light from the reflector 2 is irradiated in the irradiation direction of the vehicle headlamp 100 (lower side in FIG. 2). It is also possible to configure the lamp unit 104 as described above.

  In the vehicle headlamp 100 according to the first embodiment, as shown in FIGS. 2 and 3, the optical axis adjustment bolt 105 a is rotatable with respect to the vehicle headlamp housing 101. The rear side wall of the lamp housing 101 is supported by a bearing portion 101a1 of the vehicle center side portion 101a. Further, the optical axis adjusting bolt 105c is supported by a bearing portion 101c1 of the vehicle center side portion 101a of the rear side wall of the vehicle headlamp housing 101 so as to be rotatable with respect to the vehicle headlamp housing 101. Further, the optical axis adjusting bolt 105 b is supported by the bearing portion 101 b 1 of the vehicle side surface portion 101 b of the rear side wall of the vehicle headlamp housing 101 so as to be rotatable with respect to the vehicle headlamp housing 101.

  That is, in the vehicle headlamp 100 according to the first embodiment, as shown in FIGS. 2 and 3, the root portion 105 a 2 of the optical axis adjusting bolt 105 a is the vehicle center on the rear side wall of the vehicle headlamp housing 101. A cantilever structure is supported by the bearing portion 101a1 of the side portion 101a. Further, the base portion 105c2 of the optical axis adjusting bolt 105c is supported in a cantilever structure by the bearing portion 101c1 of the vehicle center side portion 101a on the rear side wall of the vehicle headlamp housing 101. Further, the base portion 105 b 2 of the optical axis adjusting bolt 105 b is supported in a cantilever structure by the bearing portion 101 b 1 of the vehicle side surface portion 101 b of the rear side wall of the vehicle headlamp housing 101.

  Furthermore, in the vehicle headlamp 100 of the first embodiment, the male threaded portion 105a1 of the optical axis adjusting bolt 105a and the female threaded portion 3a of the bracket 3 of the lamp unit 104 are screwed together, and the male threaded portion of the optical axis adjusting bolt 105c. 105c1 and the female threaded portion 3c of the bracket 3 of the lamp unit 104 are screwed together, and the male threaded portion 105b1 of the optical axis adjusting bolt 105b and the female threaded portion 3b of the bracket 3 of the lamp unit 104 are threadedly engaged. It is supported.

  That is, in the vehicle headlamp 100 according to the first embodiment, as shown in FIGS. 2 and 3, the male screw portion 105a1 of the tip portion 105a3 of the optical axis adjusting bolt 105a supported by the cantilever structure, The lamp unit 104 is formed by the male screw portion 105c1 of the tip portion 105c3 of the optical axis adjustment bolt 105c supported by the holding structure and the male screw portion 105b1 of the tip portion 105b3 of the optical axis adjustment bolt 105b supported by the cantilever structure. It is supported.

  In the vehicle headlamp 100 of the first embodiment, as shown in FIG. 3, two optical axis adjusting bolts 105a and 105c are provided on the vehicle center side portion 101a of the rear side wall of the vehicle headlamp housing 101. However, in the vehicle headlamp according to the third embodiment, a ball joint is provided instead of any one of the two optical axis adjusting bolts 105a and 105c, and the ball joint is used for the front of the vehicle. It is also possible to connect the vehicle center side portion 101 a on the rear side wall of the lighting housing 101 and the bracket 3 of the lamp unit 104.

  In the vehicle headlamp 100 of the first embodiment, as shown in FIG. 2, the slant is made so that the cover lens 102 wraps around from the front surface of the vehicle (lower side of FIG. 2) to the side surface of the vehicle (left side of FIG. 2). 2 and 3, the bearing portion 101b1 of the vehicle side surface portion 101b of the rear side wall of the vehicle headlamp housing 101 that supports the root portion 105b2 of the optical axis adjusting bolt 105b is provided. However, the vehicle supports the bearing portion 101a1 of the vehicle center side portion 101a of the rear side wall of the vehicle headlamp housing 101 that supports the root portion 105a2 of the optical axis adjustment bolt 105a and the root portion 105c2 of the optical axis adjustment bolt 105c. The rear side wall of the automotive headlamp housing 101 is located deeper than the bearing portion 101c1 of the vehicle center side portion 101a (the rear side (upper side in FIG. 2)). There.

  In the vehicle headlamp 100 according to the first embodiment, the vehicle headlamp housing 101 is formed by molding a resin material such as polypropylene (PP). Therefore, in the vehicle headlamp 100 according to the first embodiment, the bearing portion 101b1 of the vehicle side surface portion 101b on the rear side wall of the vehicle headlamp housing 101 is located at the back (the rear side (upper side in FIG. 2)). If it is attempted to project from the position (1) to the position on the front side (lower side in FIG. 2), there is a risk that sink marks will occur in the bearing portion 101b1.

  As a result, in the vehicle headlamp 100 of the first embodiment, as shown in FIGS. 2 and 3, the vehicle side surface portion of the rear side wall of the vehicle headlamp housing 101 in the optical axis adjusting bolt 105b. The distance between the base portion (fulcrum) 105b2 supported by the bearing portion 101b1 of the 101b and the tip portion (force point) 105b3 that supports the lamp unit 104 is the optical axis adjustment bolt 105a of the vehicle headlamp housing 101. Of the distance between the root portion (fulcrum) 105a2 supported by the bearing portion 101a1 of the vehicle center side portion 101a on the rear side wall and the tip portion (force point) 105a3 that supports the lamp unit 104, and the optical axis adjustment bolt 105c, A root portion supported by a bearing portion 101c1 of a vehicle center side portion 101a on the rear side wall of the vehicle headlamp housing 101. The distance between the fulcrum) 105c2 and the tip portion (force point) 105c3 that supports the lamp unit 104 is considerably large, and the backlash of the lamp unit 104 with respect to the vehicle headlamp housing 101 when the vehicle headlamp 100 vibrates. There is a risk that the date will increase.

  In view of this point, in the vehicle headlamp 100 according to the first embodiment, as shown in FIGS. 2, 4, 5, and 6, an auxiliary bearing for rotatably supporting the optical axis adjusting bolt 105b. The member 106 is provided separately from the vehicle headlamp housing 101. Specifically, the auxiliary bearing member 106 is disposed on the front side of the bearing portion 101b1 of the vehicle side surface portion 101b of the rear side wall of the vehicle headlamp housing 101 (the lower side in FIG. 2, the lower left side in FIG. 5, the lower side in FIG. ).

  That is, in the vehicle headlamp 100 of the first embodiment, as shown in FIGS. 2, 5, and 6, the root portion 105 b 2 of the optical axis adjustment bolt 105 b is the rear side wall of the vehicle headlamp housing 101. The intermediate portion 105b4 between the base portion 105b2 and the tip portion 105b3 of the optical axis adjusting bolt 105b is supported by the bearing portion 106a of the auxiliary bearing member 106, as well as being supported by the bearing portion 101b1 of the vehicle side surface portion 101b. Has been.

  Therefore, according to the vehicle headlamp 100 of the first embodiment, as shown in FIGS. 2, 5, and 6, the optical axis adjusting bolt 105b is supported by the bearing portion 106a of the auxiliary bearing member 106. The distance between the intermediate portion (fulcrum) 105b4 and the tip portion (power point) 105b3 that supports the lamp unit 104 can be reduced.

  As a result, according to the vehicle headlamp 100 of the first embodiment, rattling of the lamp unit 104 with respect to the vehicle headlamp housing 101 during vibration of the vehicle headlamp 100 can be suppressed. .

  In other words, according to the vehicle headlamp 100 of the first embodiment, the cover lens 102 is slanted so as to go around from the front surface of the vehicle (the lower side in FIG. 2) to the side surface of the vehicle (the left side in FIG. 2). Accordingly, it is possible to avoid the rattling of the lamp unit 104 with respect to the vehicle headlamp housing 101 during vibration of the vehicle headlamp 100.

  In the vehicle headlamp 100 of the first embodiment, the vehicle headlamp housing 101 is formed by molding polypropylene (PP), but in the vehicle headlamp of the fourth embodiment, instead. The vehicle headlamp housing 101 can be formed by molding any resin material other than polypropylene (PP).

  2, 107 indicates an extension, and in FIGS. 4 and 5, 106b indicates a screw hole.

  In the vehicle headlamp 100 of the first embodiment, as shown in FIG. 5, the auxiliary bearing member 106 is attached to the vehicle side surface portion 101b of the rear side wall of the vehicle headlamp housing 101, for example, by screwing. It has been. That is, in the vehicle headlamp 100 of the first embodiment, the auxiliary bearing member 106 is not attached to the side wall of the vehicle headlamp housing 101 on the side surface of the vehicle, but instead of the vehicle headlamp housing 101. It is attached to the vehicle side surface portion 101b of the rear side wall. In other words, in the vehicle headlamp 100 according to the first embodiment, as shown in FIG. 2, the side wall on the vehicle side surface (left side in FIG. 2) is not provided in the vehicle headlamp housing 101.

  Therefore, according to the vehicle headlamp 100 of the first embodiment, it is not necessary to provide a side wall on the vehicle side surface in the vehicle headlamp housing 101, and the vehicle headlamp during vibration of the vehicle headlamp 100 is provided. Shaking of the lamp unit 104 with respect to the lamp housing 101 can be suppressed.

  In other words, according to the vehicle headlamp 100 of the first embodiment, as shown in FIG. 2, the cover lens 102 is attached to the vehicle headlamp housing 101 from the front surface of the vehicle (lower side in FIG. 2). The vehicle side portion 101b (the left side in FIG. 2) of the rear side wall can be turned around, and rattling of the lamp unit 104 with respect to the vehicle headlamp housing 101 during vibration of the vehicle headlamp 100 is suppressed. be able to.

  Further, in the vehicle headlamp 100 of the first embodiment, as shown in FIGS. 4B and 6, the bearing portion 101 b 1 of the vehicle side surface portion 101 b of the rear side wall of the vehicle headlamp housing 101 and A concave portion 106 c for fitting is formed in the auxiliary bearing member 106. That is, in the vehicle headlamp 100 of the first embodiment, when the auxiliary bearing member 106 is attached to the vehicle side surface portion 101 b of the rear side wall of the vehicle headlamp housing 101, The bearing portion 101b1 of the vehicle side surface portion 101b of the rear side wall and the concave portion 106c of the auxiliary bearing member 106 are fitted.

  Therefore, according to the vehicle headlamp 100 of the first embodiment, the auxiliary bearing member 106 can be easily positioned with respect to the vehicle side surface portion 101b of the rear side wall of the vehicle headlamp housing 101.

  In other words, according to the vehicle headlamp 100 of the first embodiment, as shown in FIG. 6, the bearing portion (through hole) 101b1 that supports the base portion 105b2 of the optical axis adjustment bolt 105b, and the optical axis The centering with the bearing part (through hole) 106a which supports the intermediate part 105b4 of the adjustment bolt 105b can be easily performed.

  Furthermore, in the vehicle headlamp 100 of the first embodiment, as shown in FIGS. 4B and 6, the bearing portion 101 b 1 of the vehicle side surface portion 101 b of the rear side wall of the vehicle headlamp housing 101 is provided. Tapered contact portions 106c1 for contacting the outer peripheral surface 101b1a are formed on the inner peripheral surface of the concave portion 106c of the auxiliary bearing member 106, for example, at about three locations.

  That is, in the vehicle headlamp 100 according to the first embodiment, the entire inner peripheral surface of the recess 106 c of the auxiliary bearing member 106 is formed on the bearing 101 b 1 of the vehicle side surface portion 101 b of the rear side wall of the vehicle headlamp housing 101. Rather than being brought into contact with the outer peripheral surface 101b1a, about three tapered contact portions 106c1 formed on the inner peripheral surface of the recess 106c of the auxiliary bearing member 106 are formed on the rear side wall of the vehicle headlamp housing 101. It is made to contact | abut to the outer peripheral surface 101b1a of the bearing part 101b1 of the vehicle side part 101b.

  Therefore, according to the vehicle headlamp 100 of the first embodiment, the entire inner peripheral surface of the recess 106 c of the auxiliary bearing member 106 is the bearing portion of the vehicle side surface portion 101 b of the rear side wall of the vehicle headlamp housing 101. The bearing portion (through hole) 101b1 that supports the base portion 105b2 of the optical axis adjusting bolt 105b and the intermediate portion 105b4 of the optical axis adjusting bolt 105b are supported with higher accuracy than when the outer peripheral surface 101b1a is brought into contact with the outer peripheral surface 101b1. Centering with the bearing portion (through hole) 106a can be performed.

  Further, in the vehicle headlamp 100 of the first embodiment, as shown in FIG. 3, the protrusion 3 d is formed on the bracket 3 of the lamp unit 104. Further, as shown in FIGS. 4A and 5, a guide rail 106 d for supporting the protrusion 3 d is formed on the auxiliary bearing member 106.

  That is, in the vehicle headlamp 100 according to the first embodiment, a guide rail for supporting the protrusion 3d of the bracket 3 of the lamp unit 104 is formed on the side wall of the vehicle headlamp housing 101 on the side surface of the vehicle. Instead, as shown in FIGS. 4A and 5, a guide rail 106 d for supporting the protrusion 3 d of the bracket 3 of the lamp unit 104 is formed on the auxiliary bearing member 106. In other words, in the vehicle headlamp 100 according to the first embodiment, as shown in FIG. 2, the side wall on the vehicle side surface (left side in FIG. 2) is not provided in the vehicle headlamp housing 101.

  Therefore, according to the vehicle headlamp 100 of the first embodiment, it is necessary to provide a side wall on the vehicle side surface in the vehicle headlamp housing 101, and the guide rail is provided on the vehicle side surface side of the vehicle headlamp housing 101. The projection 3d of the bracket 3 of the lamp unit 104 and the guide rail 106d of the auxiliary bearing member 106 do not need to be provided on the side wall of the lamp unit 104, and the lamp unit 104 with respect to the vehicle headlamp housing 101 when the vehicle headlamp 100 vibrates. Shaking can be suppressed.

  In other words, according to the vehicle headlamp 100 of the first embodiment, the cover lens 102 is disposed on the vehicle side surface portion of the rear side wall of the vehicle headlamp housing 101 from the front surface of the vehicle (lower side in FIG. 2). 101b (left side in FIG. 2), and the projection 3d of the bracket 3 of the lamp unit 104 and the guide rail 106d of the auxiliary bearing member 106 allow the vehicle headlamp during vibration of the vehicle headlamp 100. Shaking of the lamp unit 104 with respect to the housing 101 can be suppressed.

  Specifically, in the vehicle headlamp 100 according to the first embodiment, the die removal direction in the portion of the guide rail 106d of the auxiliary bearing member 106 is set to the depth direction of the groove of the guide rail 106d. That is, the die removal direction in the guide rail 106d portion of the auxiliary bearing member 106 (upper left-lower right direction in FIG. 4A) is the die removal in the bearing portion (through hole) 106a portion of the auxiliary bearing member 106. It is set in a direction substantially orthogonal to the direction (lower left-upper right direction in FIG. 4A, central axis direction of the optical axis adjusting bolt 105b (see FIG. 5)).

  Furthermore, in the vehicle headlamp 100 according to the first embodiment, as shown in FIG. 3, a protrusion 3 e is formed on the bracket 3 of the lamp unit 104. A guide rail 101d1 for supporting the protrusion 3e is formed on the side wall 101d of the vehicle headlamp housing 101 on the vehicle center side.

  Further, in the vehicle headlamp 100 of the first embodiment, the auxiliary bearing member 106 is formed of polyacetal (POM). Therefore, according to the vehicle headlamp 100 of the first embodiment, the intermediate portion 105b4 of the optical axis adjusting bolt 105b can be supported smoothly and rotatably, and the protrusion 3d of the bracket 3 of the lamp unit 104 can be supported. Can be supported. In other words, according to the vehicle headlamp 100 of the first embodiment, the rigidity of the auxiliary bearing member 106 can be improved as compared with the case where the auxiliary bearing member 106 is made of, for example, polypropylene (PP). In addition, the wear resistance of the optical axis adjusting bolt 105b and the projection 3d of the bracket 3 of the lamp unit 104 can be improved.

  In the vehicular headlamp 100 of the first embodiment, the auxiliary bearing member 106 is formed of polyacetal (POM). However, in the vehicular headlamp of the fifth embodiment, for example, aluminum die-casting is used instead. Thus, the auxiliary bearing member 106 can be formed.

  In the sixth embodiment, the above-described first to fifth embodiments can be appropriately combined.

1 is a front view of a vehicle headlamp 100 according to a first embodiment. It is sectional drawing along the AA line of FIG. It is the disassembled perspective view which showed roughly the relationship between the vehicle headlamp housing 101, the lamp unit 104, etc. which comprise some vehicle headlamps 100 of 1st Embodiment. It is a perspective view of auxiliary bearing member 106 which constitutes a part of vehicular headlamp 100 of a 1st embodiment. The auxiliary bearing member 106 constituting a part of the vehicle headlamp 100 of the first embodiment, the bearing portion 101b1 of the vehicle side surface portion 101b of the rear side wall of the vehicle headlamp housing 101, and the optical axis adjusting bolt 105b It is the disassembled perspective view which showed schematically the relationship. The auxiliary bearing member 106 constituting a part of the vehicle headlamp 100 of the first embodiment, the bearing portion 101b1 of the vehicle side surface portion 101b of the rear side wall of the vehicle headlamp housing 101, and the optical axis adjusting bolt 105b It is a schematic horizontal sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light source 2 Reflector 3 Bracket 3a, 3b, 3c Female thread part 100 Vehicle headlamp 101 Vehicle headlamp housing 101a Vehicle center side part 101b of rear side wall Vehicle side part 101a1, 101b1, 101c1 of rear side wall Bearing part 102 Cover lens 103 Lamp chamber 104 Lamp units 105a, 105b, 105c Optical axis adjusting bolts 105a1, 105b1, 105c1 Male thread portion 106 Auxiliary bearing member 106a Bearing portion

Claims (6)

A cover lens (102) configured to slant from the front of the vehicle to the side of the vehicle;
A vehicle headlamp housing (101) and a cover lens (102) define a lamp chamber (103),
A lamp unit (104) having a light source (1) and a reflector (2) for reflecting light from the light source (1) is disposed in the lamp chamber (103);
A vehicle center side supported by bearings (101a1, 101c1) of a vehicle center side portion (101a) of a rear side wall of the vehicle headlight housing (101) so as to be rotatable with respect to the vehicle headlight housing (101). Optical axis adjustment bolts (105a, 105c);
A vehicle side surface side optical axis supported by a bearing portion (101b1) of a vehicle side surface portion (101b) of a rear side wall of the vehicle headlight housing (101) so as to be rotatable with respect to the vehicle headlight housing (101). An adjustment bolt (105b),
The male screw portion (105a1, 105c1) of the vehicle center side optical axis adjustment bolt (105a, 105c) and the vehicle center side female screw portion (3a, 3c) of the lamp unit (104) are screwed together and the vehicle side surface side optical axis adjustment is performed. In the vehicle headlamp (100) that supports the lamp unit (104) by screwing the male screw part (105b1) of the bolt (105b) and the female screw part (3b) on the vehicle side surface of the lamp unit (104). ,
A vehicle headlamp housing (101) is formed by molding a resin material,
An auxiliary bearing member (106) for rotatably supporting the vehicle side optical axis adjusting bolt (105b) is provided separately from the vehicle headlamp housing (101),
A vehicle headlamp (100) characterized in that the auxiliary bearing member (106) is disposed on the front side of the bearing portion (101b1) of the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101). ).   The vehicle headlamp (100) according to claim 1, wherein the auxiliary bearing member (106) is attached to a vehicle side surface portion (101b) of a rear side wall of the vehicle headlamp housing (101).   A concave portion (106c) for fitting with a bearing portion (101b1) of a vehicle side surface side portion (101b) of a rear side wall of the vehicle headlamp housing (101) is formed in the auxiliary bearing member (106). The vehicle headlamp (100) according to claim 2, wherein:   The tapered contact portion (106c1) for contacting the outer peripheral surface (101b1a) of the bearing portion (101b1) of the vehicle side surface portion (101b) of the rear side wall of the vehicle headlamp housing (101) is provided as an auxiliary bearing member ( The vehicular headlamp (100) according to claim 3, wherein the vehicular headlamp (100) is formed on the inner peripheral surface of the recess (106c). A vehicle side projection (3d) is formed on the lamp unit (104),
The vehicle headlamp according to claim 4, wherein a guide rail (106d) for supporting the vehicle side projection (3d) of the lamp unit (104) is formed on the auxiliary bearing member (106). 100).   The vehicle headlamp (100) according to claim 5, wherein the auxiliary bearing member (106) is made of polyacetal (POM).

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