JP2009090837A - Headlight for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce damage by mitigating shock for a pedestrian when a vehicle collides with the pedestrian. <P>SOLUTION: The headlight for the vehicle has a lamp housing 2 and a cover 3 for closing a front opening of the lamp housing and attached to an attaching part 100 of a vehicular body by a plurality of brackets 12, 13, 14 including a bracket 15 arranged at a lower surface of the lamp housing. The bracket 15 arranged at the lower surface of the lamp housing is structured by an engaging part 17 engaged with the attaching part of the vehicular body and a supporting part 16 for supporting the engaging part to the lamp housing. The supporting part is structured by a pair of supporting side face parts 18, 18 respectively protruding out from an external surface of the lamp housing and each end part respectively continues to the lamp housing and a connection face part 19, for connecting an end parts of the pair of support side face parts and another end part placed at opposite side, arranged with an engaging part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle headlamp. More specifically, the present invention relates to a technical field for reducing damage by reducing impact on a pedestrian at the time of a collision with a pedestrian of a vehicle by reducing a coupling strength between a bracket for attaching the lamp housing to a vehicle body and the lamp housing.

  Some vehicle headlamps include a lamp unit having a light source disposed inside a lamp outer casing formed by a cover and a lamp housing.

  Among such vehicle headlamps, there is a vehicle headlamp that is attached to a mounting portion of a vehicle body by a bracket that is integrally provided in the lamp housing or a bracket that is attached as a separate part to the lamp housing (for example, Patent Documents). 1).

  In the vehicle headlamp described in Patent Document 1, for example, a bracket is provided integrally with the lamp housing, and the bracket projects three surface portions protruding from the outer surface of the lamp housing and a connecting portion that connects the three surface portions. And an engaging portion provided at one end of the connecting portion.

  The bracket is provided so that the three surface portions are U-shaped, the end portions on the opposite side of the lamp housing in the three surface portions are connected by the connecting portion, and the end portions that are not continuous with the three surface portions in the connecting portion are connected to the bracket. An engaging portion is provided.

  The lamp housing is engaged by engaging the engaging portion of the bracket with an elastically deformable mounting portion provided on the vehicle body, and further, for example, another bracket (attached portion) provided at several other locations on the lamp housing. Part) are respectively engaged with the other attachment parts of the vehicle body and attached to the vehicle body.

JP-A-6-115396

  However, in the conventional vehicle headlamp described above, the bracket for attaching the lamp housing to the vehicle body has three surface portions and a connecting portion, so that the coupling strength with the lamp housing is large. When a pedestrian collides with the pedestrian, there is a problem that the bracket and the lamp housing are not easily destroyed, the impact at the time of the collision is large, and the pedestrian is damaged greatly.

  Accordingly, an object of the vehicle headlamp according to the present invention is to reduce damage by mitigating the impact on the pedestrian when the vehicle collides with the pedestrian.

  In order to solve the above-described problems, a vehicle headlamp has a lamp housing and a cover that closes a front opening of the lamp housing, and includes a bracket provided on the lower surface of the lamp housing. The bracket provided on the lower surface of the lamp housing is engaged with an engagement portion that is engaged with the attachment portion of the vehicle body, and a support portion that supports the engagement portion on the lamp housing. And a pair of support side surfaces protruding from the outer surface of the lamp housing and having one end portion continuing to the lamp housing, respectively, and a position opposite to the one end portion of the pair of support side surfaces. It is comprised by the connection surface part which connected between edge parts and was provided with the said engaging part.

  Therefore, in the vehicular headlamp, the connecting portion between the bracket and the lamp housing has two surface portions.

  The vehicle headlamp according to the present invention has a lamp housing and a cover that closes the front opening of the lamp housing, and is attached to the mounting portion of the vehicle body by a plurality of brackets including a bracket provided on the lower surface of the lamp housing. A headlamp for engaging the bracket provided on the lower surface of the lamp housing with an engaging portion engaged with an attachment portion of the vehicle body, and a support portion for supporting the engaging portion on the lamp housing. And a pair of support side portions protruding from the outer surface of the lamp housing and having one end portion continuing to the lamp housing, and opposite to the one end portion of the pair of support side portions. The other end portions are connected to each other, and the connecting surface portion is provided with the engaging portion.

  Therefore, in the unlikely event that the vehicle collides with a pedestrian, the pair of supporting side surface portions are bitten into the lamp housing, or at least a part of the lamp housing or the bracket is destroyed, and the pedestrian is in collision with the pedestrian of the vehicle. The impact force on the pedestrian is alleviated and damage to the pedestrian can be reduced.

  In the invention described in claim 2, since the length of the one end portion of the support side surface portion is shorter than the length of the other end portion, the bracket bites into the lamp housing at the time of collision with the pedestrian of the vehicle. The lamp housing is easily broken.

  In the invention described in claim 3, since the thickness of the lamp housing is made thinner than the thickness of the supporting side surface portion, the bracket easily bites into the lamp housing at the time of collision with a pedestrian of the vehicle, and the lamp housing is destroyed. Is likely to occur.

  According to a fourth aspect of the present invention, a portion that is continuous with the one end portion of the support side surface portion on the outer surface of the lamp housing is formed in a plane, and the outer surface of the lamp housing at the one end portion in the support side surface portion. A plane that is continuous with the flat surface of the lamp housing and the flat surface of the support side surface portion at a predetermined angle, and a surface that is continuous with the other end portion of the support side surface portion of the connecting surface portion. And a surface that is continuous with the connecting surface portion at the other end of the supporting side surface portion are formed into a continuous curved surface, so that it is supported rather than a continuous portion between the supporting side surface portion and the connecting surface portion at the time of collision with a vehicle pedestrian. Stress tends to concentrate on the continuous portion of the side surface portion and the flat surface portion, the bracket easily bites into the lamp housing, and the lamp housing is likely to be broken.

  In the invention described in claim 5, the lower surface of the lamp housing is formed as a flat portion, the bracket is provided on the flat portion of the lamp housing, and the length of the one end portion of the supporting side surface portion is supported by the support. Since the length of the side surface portion is longer than the length in the protruding direction from the outer surface of the lamp housing, the flat surface portion is likely to be broken at the time of collision with the pedestrian of the vehicle.

  The best mode for carrying out the vehicle headlamp of the present invention will be described below with reference to the accompanying drawings.

  The vehicle headlamps 1 and 1 are respectively attached to the left and right ends of the front end of the vehicle body.

  As shown in FIGS. 1 and 2, the vehicle headlamp 1 includes a lamp housing 2 having a concave portion opened forward and a cover 3 that closes the opening surface of the lamp housing 2. The cover 3 forms a lamp outer casing 4. An internal space of the lamp outer casing 4 is formed as a lamp chamber 5.

  The lamp housing 2 has a flat surface portion 2a positioned below, and is formed so that the flat surface portion 2a faces substantially in the vertical direction.

  A first lamp unit 6 and a second lamp unit 7 are arranged in the lamp chamber 5 so as to be separated from each other on the left and right.

  The first lamp unit 6 includes a first reflector 8 that is tiltably supported by a lamp housing 2 via a support mechanism (not shown), and a first light source 9 that is attached to the rear end of the first reflector 8. have. The light emitted from the first light source 9 is reflected by the inner surface of the first reflector 8, is transmitted through the cover 3, and is irradiated forward.

  The second lamp unit 7 includes a second reflector 10 that is tiltably supported by a lamp housing 2 via a support mechanism (not shown), and a second light source 11 that is attached to the rear end of the second reflector 10. have. The light emitted from the second light source 11 is reflected by the inner surface of the second reflector 10, is transmitted through the cover 3, and is irradiated forward.

  One of the first lamp unit 6 and the second lamp unit 7 is a so-called high beam lamp unit for irradiating a position at a long distance, and the other is a so-called low beam lamp unit for irradiating a position at a short distance. It is provided as a lamp unit.

  On the outer surface of the lamp housing 2, for example, a plurality of brackets 12, 13, 14, and 15 are integrally provided.

  The brackets 12 and 13 are provided separately from each other at the upper end of the lamp housing 2, for example, and left and right, and the brackets 14 and 15 are provided at left and right, for example, at the lower end of the lamp housing 2.

  The brackets 12, 13, and 14 are attached to attachment portions (not shown) provided on the vehicle body, for example, by screwing.

  The bracket 15 is provided so as to protrude downward from the flat surface portion 2a of the lamp housing 2, and includes a support portion 16 and an engagement portion 17 (see FIG. 3).

  The support portion 16 includes a pair of support side surface portions 18 and 18 and a connection surface portion 19.

  The support side surfaces 18 and 18 are provided in parallel and spaced apart from each other in the left-right direction, and are formed in a plate shape facing the left-right direction. The support side surfaces 18 and 18 are formed, for example, in a trapezoidal shape, and protrude downward from the flat surface portion 2a.

  As shown in FIG. 4, the supporting side surface portions 18 and 18 have one end portions 18 a and 18 a, that is, the length L 1 of the end portion (upper end portion) continuous to the lamp housing 2, and the other end portions 18 b and 18 b. That is, it is shorter than the length L2 of the lower end. Further, as shown in FIG. 4, the support side surface portions 18 and 18 have a length L <b> 1 of one end portions 18 a and 18 a longer than a length H in the protruding direction from the lamp housing 2.

  As shown in FIG. 5, the supporting side surface portions 18 and 18 are formed such that the thicknesses T1 and T1 are thicker than the thickness T2 of the flat surface portion 2a. Accordingly, the flat portion 2a is formed such that the thickness T2 is thinner than the thicknesses T1 and T1 of the supporting side surface portions 18 and 18.

  The connecting surface portion 19 is provided so as to connect the other end portions of the supporting side surface portions 18 and 18 and is formed in a plate shape that faces in the vertical direction.

  Consecutive portions between the mutually opposing surfaces of the supporting side surface portions 18 and 18 and the upper surface of the connecting surface portion 19 are formed as curved surfaces 20 and 20.

  The supporting side surface portions 18 and 18 and the flat surface portion 2a are continuous at a predetermined angle, for example, 90 °, and the continuous portions A, A,... Are not formed as curved surfaces but are formed in an angular state. Yes.

  As shown in FIG. 3, the engaging portion 17 is provided continuously to the rear end portions of the support side surface portions 18 and 18 and the rear end portion of the connecting surface portion 19. It is formed in a cylindrical shape.

  A mounting portion 100 is provided on the vehicle body, and the mounting portion 100 is opened forward (see FIGS. 2 and 3). The mounting part 100 has a plurality of mounting protrusions 101, 101,.

  When the engaging portion 17 is inserted into the mounting portion 100 from the front and the mounting protrusions 101 and 101 are pressed and elastically deformed by the engaging portion 17 and then the bracket 17 is inserted to a predetermined position. The mounting protrusions 101, 101,... Are elastically restored to be held by the mounting protrusions 101, 101,.

  When the vehicle having the vehicle headlamps 1 and 1 configured as described above collides with a pedestrian, the portion of the bracket 15 coupled to the lamp housing 2 is formed by the pair of support side surfaces 18 and 18. Since there are only two surface portions, and the portion of the bracket 15 connected to the lamp housing 2 is not connected by the three surface portions, for example, as shown in FIG. As a result, the lamp outer casing 4 is moved, and the lamp housing 2 is brought into a state in which the pair of supporting side surface parts 18 and 18 are bitten (a state before the supporting side surface parts 18 and 18 bite in is indicated by a broken line) or the lamp housing. 2 or at least a part of the bracket 15 is destroyed.

  Therefore, when the vehicle collides with a pedestrian, the impact force on the pedestrian is reduced, and damage to the pedestrian can be reduced.

  Further, in the vehicle headlamp 1, since the length of the one end portions 18a, 18a of the support side surface portions 18, 18 in the bracket 15 is shorter than the length of the other end portions 18b, 18b, the walking of the vehicle At the time of a collision with a person, the bracket 15 tends to bite into the lamp housing 2 and the lamp housing 2 is easily broken.

  Further, since the thickness of the flat surface portion 2a of the lamp housing 2 is made thinner than the thickness of the supporting side surface portions 18 and 18, the bracket 15 can easily bite into the lamp housing 2 at the time of collision with a pedestrian of the vehicle. It is easy to break.

  Furthermore, in the bracket 15, the continuous portions of the support side surface portions 18, 18 and the connecting surface portion 19 are formed as curved surfaces 20, 20, and the continuous portions A, A,... Of the support side surface portions 18, 18 and the flat surface portion 2 a. Since the support side surface portions 18 and 18 and the flat surface portion 2a are formed continuously at a predetermined angle without forming a curved surface, the support side surface portions 18 and 18 and the connection surface portion are formed at the time of collision with a pedestrian of the vehicle. The stress tends to concentrate on the continuous portions A, A,... Between the supporting side surface portions 18, 18 and the flat surface portion 2a rather than the continuous portion with the bracket 19, and the bracket 15 easily bites into the lamp housing 2. Is likely to occur.

  In addition, in the vehicle headlamp 1, the bracket 15 is provided on the flat surface portion 2 a of the lamp housing 2, and the lengths of the one end portions 18 a and 18 a of the support side surface portions 18 and 18 are set to the lengths of the support side surface portions 18 and 18. Since it is longer than the length in the protruding direction from the lamp housing 2, the flat portion 2a is likely to be broken at the time of collision with a pedestrian of the vehicle.

  Although an example in which the bracket 15 is provided integrally with the lamp housing 2 has been described above, the bracket 15 may be a separate member from the lamp housing 2. In this case, the bracket 15 is attached to the lamp housing 2. It is attached by appropriate means such as adhesion and welding.

  The shapes and structures of the respective parts shown in the best mode for carrying out the invention described above are merely examples of the embodiments performed in practicing the present invention. The range should not be interpreted in a limited way.

FIG. 2 to FIG. 6 show the best mode of the vehicle headlamp of the present invention, and this figure is a schematic front view of the vehicle headlamp. It is an expanded sectional view which follows the II-II line | wire of FIG. 1 shown with the attaching part of a vehicle body. It is an expansion disassembled perspective view which shows the attachment part of a bracket and a vehicle body. It is an enlarged side view of a bracket. It is an enlarged rear view of a bracket. It is a conceptual diagram which shows the state which the lamp housing has moved at the time of collision with the pedestrian of a vehicle, and the bracket digged into the lamp housing.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vehicle headlamp, 2 ... Lamp housing, 2a ... Plane part, 3 ... Cover, 15 ... Bracket, 16 ... Support part, 17 ... Engagement part, 18 ... Support side part, 18a ... One end part, 18b ... The other end part, 19 ... a connecting surface part, 20 ... a curved surface, 100 ... an attachment part

Claims (5)

A vehicle headlamp that has a lamp housing and a cover that closes a front opening of the lamp housing and is attached to a mounting portion of a vehicle body by a plurality of brackets including a bracket provided on a lower surface of the lamp housing,
The bracket provided on the lower surface of the lamp housing is configured by an engaging portion that is engaged with an attachment portion of the vehicle body, and a support portion that supports the engaging portion on the lamp housing,
The support portion is protruded from the outer surface of the lamp housing and is connected between the pair of support side portions whose one end portion is continuous with the lamp housing and the other end portion opposite to the one end portion of the pair of support side portions. And a connecting surface portion provided with the engaging portion. A vehicle headlamp characterized by comprising: The vehicle headlamp according to claim 1, wherein a length of the one end portion of the support side surface portion is shorter than a length of the other end portion. The vehicle headlamp according to claim 1 or 2, wherein a thickness of the lamp housing is smaller than a thickness of the supporting side surface portion. A portion that is continuous with the one end portion of the support side surface portion on the outer surface of the lamp housing is formed in a plane,
A portion that is continuous with the outer surface of the lamp housing at the one end of the supporting side surface is formed into a plane,
The plane of the lamp housing and the plane of the supporting side surface portion are made continuous at a predetermined angle,
The surface continuous to the other end portion of the support side surface portion in the connection surface portion and the surface continuous to the connection surface portion in the other end portion of the support side surface portion are formed into a continuous curved surface. The vehicle headlamp according to claim 1, claim 2 or claim 3. The lower surface of the lamp housing is formed as a flat portion,
The bracket is provided on the flat portion of the lamp housing,
The length of the said one end part of the said support side part was made longer than the length in the protrusion direction from the outer surface of the lamp housing of the said support side part. The claim 1, 2, 3, or 4 characterized by the above-mentioned. The vehicle headlamp described in 1.

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