JP4858722B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp used for a headlamp and a rear combination lamp of an automobile.

  2. Description of the Related Art As is well known, vehicle lamps such as automobile headlamps and rear combination lamps include a housing that houses a lamp unit and an outer lens that closes a front opening of the housing.

These housing and outer lens are filled with a sealing material in a groove provided at the periphery of one opening, and a leg provided at the periphery of the other opening is fitted into the groove and embedded in the sealing material. Bonding also serving as a seal is performed (see Patent Document 1).
JP 2003-217318 A

  In recent years, for reasons of automobile body design, for example, as shown in FIGS. 1 and 2, as a headlamp 1, the front fenders F · F from the vehicle width direction corner portion of the front end portion F · E of the vehicle body to the front side portion. It is desired that the outer lens 30 has a long design in the front-rear direction of the vehicle body so that the outer lens 30 is greatly turned around, and that the outer lens 30 has an unusual design portion 31 that is exposed to the outside.

  Thus, when the headlamp 1 is configured to be long in the longitudinal direction of the vehicle body, the lamp unit 20 is disposed at the front portion of the headlamp 1 so as to face the front of the vehicle, while the outer lens 30 is externally connected as described above. The design part 31 exposed to is provided. In addition, a concave portion 32 that is smoothly curved toward the center of the lens is formed in the lower edge portion of the design portion 31 around the lamp unit 20 for light distribution and design reasons.

  Both the housing 10 and the outer lens 30 constituting the outer shell of the headlamp 1 are injection-molded by a predetermined mold with an appropriate synthetic resin material. In this case, as shown in FIG. 2, the mold releasing direction X is set in the longitudinal direction of the vehicle body so that the housing 10 can be assembled from the longitudinal direction of the lamp unit 20. On the other hand, since the outer lens 30 faces the side of the vehicle body, when a slide mold is not used as a part of the mold, the die-cutting direction Y takes into account the design part 31 in consideration of the die-cutting property of the design part 31. It is set in a substantially perpendicular direction. For this reason, in the assembled state of the housing 10 and the outer lens 30 shown in FIG. 2, the die-cutting direction Y of the outer lens 30 intersects the die-cutting direction X of the housing 10 obliquely and slightly upward. It becomes a state. Due to the difference between the two die cutting directions X and Y, as shown in FIG. 5 as a cross section taken along the line CC in FIG. On the peripheral portion of the concave portion 32 curved as shown in FIG. 6 as a sectional view taken along the line DD in FIG. The part which becomes inward with respect to the part 12 periphery arises.

  When the conventional fitting structure of the groove portion and the leg portion is simply applied to the coupling between the outer lens 30 having the irregular design portion 31 and the housing 10 and serving as a seal, that is, the coupling portion is Set along the peripheral shape of the design portion 31 of the outer lens 30, for example, as shown by a chain line in FIGS. 5 and 6, the groove portion 13 ′ is provided on the periphery of the opening 12 of the housing 10, and the design portion 31 of the outer lens 30 is provided. Assuming that the peripheral edge terminal is the leg portion 33 ′, when the groove portion 13 ′ and the leg portion 33 ′ are fitted and joined, the lower edge side of the design portion 31 has a generally straight edge as described above. In the portion and the curved concave portion 32, the peripheral edge of the design portion 31 changes outward and inward with respect to the peripheral edge of the housing opening 12, so that the groove 13 ′ of the housing opening 12 Change in direction, inward It is necessary to form the groove shape having a tapered outer opening so as to accommodate the that legs 33 '. For this reason, as shown by a chain line in FIG. 5, a gap S is formed outside the fitting portion between the leg part 33 ′ and the groove part 13 ′ in the part where the leg part 33 ′ faces outward, whereas in FIG. As shown, a gap S is formed inside the fitting portion between the leg portion 33 ′ and the groove portion 13 ′ at the portion where the leg portion 33 ′ is inward.

  As a result, even if the fitting portion between the groove portion 13 ′ and the leg portion 33 ′ is filled with a sealing material (not shown), the waterproofness is impaired due to the generation of the gap S. Further, the appearance of the gap S on the outside causes a problem in appearance.

  Therefore, in the case where the outer lens of a lamp configured to be long in the longitudinal direction of the vehicle body is formed with a design portion that partially has a concave portion that is curved at the periphery, the present invention is arranged in the direction in which the housing and the outer lens are molded. There is provided a vehicular lamp capable of avoiding a deterioration in waterproofness and appearance without causing a gap in a fitting seal portion between a groove portion and a leg portion at a peripheral edge of a housing opening and an outer peripheral edge of an outer lens due to a difference. It is to provide.

In the present invention, the housing containing the lamp unit and the outer lens are fitted with the groove provided on one of the peripheral edge of the opening of the housing and the outer peripheral edge of the outer lens and the leg provided on the other. In a vehicular lamp that is configured to be coupled by a seal portion and is disposed around a vehicle body side portion from a vehicle width direction corner portion at the front or rear of the vehicle body, the outer lens is disposed to be exposed to the outside. A recess is formed in the periphery of the design part partially toward the center of the lens, and the housing has a die cutting direction set in the vehicle longitudinal direction, while the outer lens has a die cutting direction that It is set in a direction substantially perpendicular to the design portion, and in the assembled state of the housing and the outer lens, the mold release direction of the outer lens intersects with the mold release direction of the housing obliquely. Is a structure, by die cutting direction difference between these housings and the outer lens, the gradient of the concave edge of the design portion, is the inward relative to the periphery of the opening of the housing, the outer peripheral edge of the outer lens Is formed at a portion corresponding to the concave portion in the radial direction of the outer lens, and a peripheral extension portion is formed for setting the seal portion at a position separated from the peripheral portion of the design portion . The main feature is that it is expanded corresponding to the peripheral expansion portion .

  Therefore, the housing and the outer lens are filled in the fitting portion by fitting a groove provided on one of the peripheral edge of the opening of the housing and the outer peripheral edge of the outer lens and the leg provided on the other. The leg portion is embedded in the sealing material so as to be combined with the seal portion. Even in the portion where the peripheral extension portion of the outer lens is formed, the peripheral portion of the opening portion of the housing and the peripheral portion of the peripheral extension portion In this case, the groove portion and the leg portion are joined together to serve as a seal portion.

  According to the vehicular lamp of the present invention, the peripheral portion of the peripheral extension portion of the outer lens is formed with a leg portion or groove portion corresponding to the groove portion or leg portion of the peripheral edge portion of the opening of the housing. The leg portion or the groove portion of the portion is formed at a position separated from the concave portion in the design portion of the outer lens, and can be molded substantially in accordance with the mold release direction of the housing without being restricted by the shape of the concave portion.

  As a result, there is no gap on the outer and inner sides of the fitting portion between the groove and the leg over the entire circumference of the joint between the outer periphery of the opening of the housing and the outer peripheral edge of the outer lens. Can be increased.

  Further, the fitting portion between the groove portion and the leg portion in the peripheral extension portion can be formed linearly in the circumferential direction without being constrained by the peripheral shape of the design portion, thereby further improving the waterproofness. In addition, the fitting workability between the groove and the leg can be improved.

  Furthermore, the coupling part in the peripheral extension part, that is, the seal part is arranged far from the parting gap generated between the peripheral part of the design part of the outer lens and the vehicle body side panel material such as a bumper fascia or a fender panel. Therefore, high waterproofness can be obtained even with respect to car wash water or splash that strikes the parting gap directly.

  Hereinafter, an embodiment of the present invention will be described in detail by taking a headlamp as an example.

  1 is a front view of the headlamp according to the present invention, FIG. 2 is a plan view of the headlamp, FIG. 3 is a sectional view taken along the line AA in FIG. 1, and FIG. 4 is taken along the line BB in FIG. 5 is a cross-sectional view taken along the line CC of FIG. 1, and FIG. 6 is a cross-sectional view taken along the line DD of FIG.

  1 and 2 show a headlamp on the left side of the vehicle body. For reasons of vehicle body design, the headlamp 1 has a front fender FF on the front side portion from the left corner portion of the front end portion FE of the vehicle body. It is configured to be long in the longitudinal direction of the vehicle body so as to go around to the side.

  The headlamp 1 includes a housing 10, a lamp unit 20 attached to the lamp chamber 11 of the housing 10, and an outer lens 30 that closes the opening of the housing 10, that is, the opening 12 of the lamp chamber 11. Yes.

  The headlamp 1 is formed in a gentle arc shape that protrudes outward in plan view as shown in FIG. 2 along a character line extending from the front end portions F and E to the front fenders F and F. As shown in FIG. 1, the side part arranged on the front fender F / F side is slightly rearwardly raised rearward in accordance with the shape of the opening on the vehicle body side where the headlamp 1 is laid out. The upper edge part is formed in the shape inclined forward from the side part to the front part.

  The lamp unit 20 disposed in the lamp chamber 11 of the housing 10 is disposed on one side of the front portion of the headlamp 1 so that the light source 21 faces the front of the vehicle.

  On the other hand, the outer lens 30 is provided with a design portion 31 that is exposed to the outside from the front portion to the rear end portion of the side portion. The design portion 31 is formed along the peripheral shape of the opening on the vehicle body side where the outer lens 30 is exposed to the outside and is laid out, and the peripheral portion of one side portion corresponding to the lamp unit 20 of the design portion 31 is formed. The lower edge portion is formed with a concave portion 32 that is smoothly curved toward the center of the lens for light distribution and design reasons.

  As shown in FIGS. 3 and 4, the housing 10 and the outer lens 30 include a groove portion 13 formed on the outer periphery of the opening 12 of the housing 10 and an outer peripheral portion of the outer lens 30 on the housing 10 side. The seal portion 2 is joined by fitting the leg portion 33 projecting toward the end portion and embedding the leg portion 33 in the sealing material 14 filled in the groove portion 13.

  Both the housing 10 and the outer lens 30 constituting the outer shell of the headlamp 1 are injection-molded by a predetermined mold with an appropriate synthetic resin material.

  In this case, the housing 10 has the die cutting direction X so that the lamp unit 20 can be assembled from the optical axis direction of the light source 21, i.e., from the front of the vehicle body in FIG. 2. Set in the front-rear direction.

  On the other hand, since the outer lens 30 faces the side of the vehicle body in FIG. 2, the die cutting direction Y is substantially perpendicular to the design portion 31 in consideration of the die-cutting property of the design portion 31 as shown in FIG. Therefore, it is possible to mold with a simple mold that does not partially use a slide mold.

  Here, at the outer peripheral edge portion of the outer lens 30, at least a portion corresponding to the concave portion 32 of the design portion 31 spreads in the radial direction of the outer lens 30, and the seal portion 2 is separated from the peripheral edge of the design portion 31. A peripheral extension 34 is formed for setting the position.

  As described above, the concave portion 32 of the design portion 31 is formed around the lamp unit 20 on the lower side of the peripheral edge of the design portion 31, and thus the peripheral extension portion 34 corresponds to the peripheral concave portion 32 of the design portion 31. Formed in the lower region.

  In the present embodiment, as shown in FIG. 1, the peripheral extension portion 34 is a front surface around one side portion of the design portion 31 from the lower region of the concave portion 32 to the upper side with the arrangement portion of the lamp unit 20 as a substantial center. It is formed in a substantially rectangular shape as viewed. Further, portions other than the design portion 31 of the outer lens 30 cannot be seen through from the outside by painting or the like.

  On the front portion side of the housing 10, the opening 12 is enlarged in a substantially rectangular shape corresponding to the peripheral extension portion 34 when viewed from the front. Therefore, as shown in FIG. 3, the lamp chamber 11 is formed with a lamp chamber enlargement portion 11 </ b> A of a required space that is expanded below the lower edge of the design portion 31 below the light source 21 of the lamp unit 20. .

  One groove portion 13 constituting the joint portion that also serves as the seal portion 2 between the housing 10 and the outer lens 30 is formed in a series from the enlarged portion of the opening portion 12 of the housing 10 to the general portion, The part 33 is formed in a series from the peripheral part of the peripheral extension part 34 of the outer lens 30 to the general outer peripheral part of the outer lens 20 without the peripheral extension part 34.

  The housing 10 is provided with a mounting member 15 such as a bracket 15a or a locating pin 15b for mounting the headlamp 1 on a vehicle body side member (not shown). Is provided in the vicinity of the peripheral portion of the peripheral extension portion 34 of the outer lens 30, that is, the peripheral portion of the enlarged portion corresponding to the peripheral extension portion 34 of the housing opening 12 (see FIG. 1).

  According to the headlamp 1 of the present embodiment having the above-described configuration, the housing 10 and the outer lens 30 include the groove portion 13 provided on the periphery of the opening 12 of the housing 10 and the legs provided on the outer periphery of the outer lens 30. The portion 33 is fitted and the leg portion 33 is embedded in the sealing material 14 filled in the groove portion 13 to perform the coupling that also serves as the sealing portion 2, but the peripheral extension portion 34 of the outer lens 30 is formed. Even if it exists in a part, the fitting of the said groove part 13 and the leg part 33 between the periphery of the opening part 12 expanded corresponding to the peripheral extension part 34 of the housing 10, and the peripheral part of the peripheral extension part 34 The combination that also serves as the seal portion 2 is performed.

  As described above, the leg portion 33 is formed on the peripheral edge portion of the peripheral extension portion 34 of the outer lens 30 corresponding to the groove portion 13 on the peripheral edge of the opening 12 of the housing 10. The design portion 31 is formed at a position far away from the recess 32, and can be molded substantially in accordance with the die cutting direction X of the housing 10 without being limited by the shape of the recess 32.

  That is, as described above, the mold release direction X is set in the longitudinal direction of the vehicle body so that the lamp unit 20 can be assembled from the front of the vehicle body in FIG. On the other hand, since the outer lens 30 faces the side of the vehicle body, in a simple mold that does not use a slide mold as a part of the mold, the die-cutting direction Y takes into account the die-cutting property of the design part 31 and the design part. 31 is set in a substantially perpendicular direction.

  For this reason, in the assembled state of the housing 10 and the outer lens 30 shown in FIG. 2, the die-cutting direction Y of the outer lens 30 intersects the die-cutting direction X of the housing 10 obliquely and slightly upward. It becomes a state.

  Due to the difference between the two die cutting directions X and Y, the peripheral edge of the design portion 31 has a substantially straight peripheral edge as shown in FIG. On the other hand, at the peripheral portion of the curved concave portion 32, there is a portion where the peripheral die cutting gradient is inward with respect to the peripheral edge of the opening 12 of the housing 10 as shown in FIG. 6.

  On the other hand, in this embodiment, the leg portion 33 on the outer lens 30 side is formed at the peripheral edge portion of the peripheral extension portion 34 at a portion corresponding to the concave portion 32 of the design portion 31, and the elastic restoring action of the lens base material at the peripheral portion. Accordingly, even if the leg portion 33 is slightly deviated from the die-cutting direction Y of the outer lens 30, the leg portion 33 is allowed to be in the die-cutting direction X of the housing 10 as shown in FIGS. It becomes possible to mold almost together.

  As a result, the groove portion 13 on the periphery of the opening portion 12 of the housing 10 may have an opening width slightly wider than the plate thickness of the leg portion 33, and a joint portion between the periphery of the opening portion 12 of the housing 10 and the outer periphery portion of the outer lens 30. The gap S (see the chain line in FIG. 5 and FIG. 6) does not occur on the outer and inner sides of the fitting portion between the groove 13 and the leg 33 over the entire circumference, and the waterproofness can be improved.

  Moreover, since the fitting part of the groove part 13 and the leg part 33 in the said peripheral extension part 34 can be formed linearly in those circumferential directions, without being restricted by the peripheral shape of the design part 31, it is waterproof. The fitting workability between the groove portion 13 and the leg portion 33 can be improved.

  Furthermore, the joining part in the peripheral extension part 34, that is, the parting gap formed between the peripheral part of the design part 31 of the outer lens 30 and the vehicle body side panel materials B and P such as a bumper fascia or a fender panel. C (the vehicle body side panel materials B and P, and the parting gap C are both shown in FIG. 5), the car wash water or splash that hits the parting gap C is difficult to reach. High waterproofness can be obtained even against direct hit water.

  Here, particularly in the present embodiment, the concave portion 32 on the periphery of the design portion 31 of the outer lens 30 corresponds to the lamp unit 20 that is offset from the front portion side of the headlamp 1. In the case where it is formed on the lower side around 20, the peripheral extension part 34 extends around the one side part of the design part 31 from the lower region of the concave part 32 to the upper side with the arrangement part of the lamp unit 20 as a substantial center. It is formed in a substantially rectangular shape when viewed from the front. For this reason, on the front part side of the headlamp 1 that is most susceptible to direct splashing when the vehicle travels, the peripheral extension 34 rises from the molding base (peripheral base) of the design part 31 around the entire periphery, and the design part 31 and the vehicle body Since it functions as a dam member for the splash that directly strikes the parting gap C between the side panel members B and P, it is possible to avoid the splash from directly hitting the seal portion 2 in which the groove portion 13 and the leg portion 33 are fitted. . Further, as described above, when the upper edge portion of the headlamp 1 is formed in a forwardly inclined shape and the front portion is directed inward in the vehicle width direction, the drainage performance is ensured such that the flow of rainwater or the like does not stagnate. Becomes better. Moreover, since the peripheral extension 34 is also formed on the upper side of the design part 31 on the front part side, the drainage guide function and the dam member function of the peripheral extension part 34 against rainwater flowing into the front part side. As a result, waterproofness can be further enhanced.

  Further, since the peripheral extension portion 34 is also formed on the upper side of the design portion 31, even if the edge of the vehicle body side panel material B / P shown in FIG. Since deformation can be regulated, the feeling of quality can be enhanced by suppressing the unevenness of the vehicle body side panel members B and P.

  In addition, as described above, the peripheral extension portion 34 is formed in a substantially rectangular shape when viewed from the front, and a large number of substantially straight portions of the seal portion 2 at the peripheral portion can be set. Attaching workability can be improved.

  Further, along with the extension of the peripheral extension 34 below the recess 32, the opening 12 of the housing 10 is expanded downward accordingly, and the lamp chamber 11 is provided below the light source 21 of the lamp unit 20. Since the enlarged portion 11 </ b> A is formed, when the air in the lamp chamber 11 is convected by heat from the light source 21 and moisture in the air is condensed on the inner surface of the outer lens 30, this condensation area is It becomes possible to shift the position to the peripheral extension part 34 which is the front surface of the lamp chamber enlargement part 11A below the design part 31. As a result, it is possible to avoid a decrease in light distribution performance due to condensation in the lower portion of the design portion 31 and a decrease in appearance and quality.

  Moreover, since the attachment member 15 provided in the housing 10 can be provided in the vicinity of the peripheral portion of the peripheral extension portion 34, the attachment member 15 is attached even if the attachment point set on the vehicle body side member is far from the design portion 31. Since the member 15 can be provided close to the vehicle body side member, the leg length can be made as short as possible.

  As a result, the rigidity of the mounting member 15 can be increased and the mounting rigidity of the headlamp 1 can be increased, and the mounting error of the mounting member 15 can be reduced and the mounting accuracy to the vehicle body side member can be increased.

  In the above-described embodiment, the peripheral extension portion 34 is formed in a substantially rectangular shape on the front portion side of the headlamp 1, but is formed entirely on the outer lens 30 so as to surround the entire circumference of the design portion 31. May be. The formation position of the recess 32 is not limited to the periphery of the lamp unit 20 and may be anywhere on the periphery of the design portion 31 depending on the modeling requirements, and the peripheral extension portion 34 is formed in accordance with this. Furthermore, the present invention is not limited to a headlamp, and can be applied to a rear combination lamp to achieve the same effect as that of the above embodiment.

The front view of the headlamp which concerns on one Embodiment of this invention. The top view of the headlamp shown in FIG. Sectional drawing in alignment with the AA of FIG. Sectional drawing which follows the BB line of FIG. Sectional drawing which follows the CC line | wire of FIG. Sectional drawing which follows the DD line | wire of FIG.

Explanation of symbols

1 Headlamp (vehicle lamp)
FE Front end (front of vehicle body)
FF front fender (vehicle body side)
DESCRIPTION OF SYMBOLS 2 Seal part 10 Housing 11 Lamp chamber 11A Lamp chamber expansion part 12 Housing opening part 13 Groove part 14 Seal material 15 Mounting member 20 Lamp unit 21 Light source 30 Outer lens 31 Design part 32 Concave part 33 Leg part 34 Peripheral extension part

Claims (5)

The housing housing the lamp unit and the outer lens are connected by a seal portion in which a groove provided in one of the peripheral edge of the opening of the housing and the outer peripheral edge of the outer lens and a leg provided in the other are joined. In a vehicle lamp disposed around the vehicle body side portion from the vehicle width direction corner portion at the front or rear of the vehicle body,
The outer lens is formed with a concave portion partially toward the center of the lens at the periphery of the design portion that is exposed and arranged outside.
The housing has a die cutting direction set in the longitudinal direction of the vehicle body,
The outer lens has a die-cutting direction that is set to be substantially flush with the design portion, and when the housing and the outer lens are assembled, the die-cutting direction of the outer lens is relative to the die-cutting direction of the housing. With a diagonal crossing structure,
Due to the difference in the mold release direction between the housing and the outer lens, the gradient of the peripheral edge of the concave portion of the design portion is inward with respect to the peripheral edge of the opening of the housing.
On the outer peripheral edge portion of the outer lens, a peripheral extension portion is formed that spreads in the radial direction of the outer lens at least at a portion corresponding to the concave portion and sets the seal portion at a position separated from the peripheral edge of the design portion ,
A vehicular lamp characterized in that the peripheral edge of the opening of the housing is expanded corresponding to the peripheral expansion portion .   The vehicular lamp according to claim 1, wherein an attachment member to the vehicle body side of the housing is provided in the vicinity of the peripheral portion of the peripheral extension portion.   The peripheral extension is formed below the design part, the opening of the housing is expanded downward corresponding to the peripheral extension, and the lamp chamber expansion is formed below the lamp unit. The vehicular lamp according to claim 1 or 2.   The lamp unit is disposed at a position deviated to one side of the design portion of the outer lens, a recess at the periphery of the design portion is formed around the lamp unit, and the peripheral extension portion is substantially the lamp unit disposition portion. The vehicular lamp according to any one of claims 1 to 3, wherein the vehicular lamp is formed around one side portion of the design portion as a center.   The vehicle lamp according to any one of claims 1 to 4, wherein the peripheral extension portion is formed on an upper side of the design portion.

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