JP2004203288A - Head lamp mounting structure for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide head lamp structure for an automobile capable of improving protection performance for a pedestrian by stabilizing a movement in displacement of the head lamp when the pedestrian collides a traveling automobile, and reducing impulse force in case of the collision. <P>SOLUTION: The rear side upper part of the head lamp 3 of the automobile is fixed to the vehicle body at one place through a separate bracket 13, and the front side lower part of the head lamp 3 is fixed with a plurality of mounting brackets 10a, 10b disposed on the approximately one axis in the vehicle width direction. The head lamp structure is that separates bracket 13 into the head lamp side and the vehicle side while the displacement direction is regulated by the mounting brackets 10a, 10b in case of the collision of the automobile. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a headlamp mounting structure for a vehicle in which the impact force when a pedestrian collides with a running vehicle is improved to improve pedestrian protection performance.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a technology for reducing an impact force when a running car collides with a pedestrian has been developed. Particularly, when the pedestrian is a child, the head of the child collides with a headlamp of the car. Due to the danger, measures against headlamp collisions have become an important issue.
Therefore, a technique of a headlamp mounting structure for an automobile as described below is known (see Patent Document 1).
According to the conventional headlamp mounting structure for a vehicle, a plurality of mounting brackets to the vehicle body protruding from the headlamp housing are provided with fragile portions that are cut when the vehicle collides, while supporting the headlamp. The shroud panel has a structure in which an opening is formed to allow rearward displacement of the headlamp from which the mounting bracket has been cut.
[0003]
[Patent Document 1]
JP 2001-233121 A (Page 2-3, FIG. 1-3)
[0004]
[Problems to be solved by the invention]
However, in the conventional headlamp mounting structure for automobiles, since the mounting bracket is appropriately cut according to the location and direction of the impact force received by the headlamp, the mode of breaking and displacement of the fragile portion is reduced. And the headlamp may be displaced in a large number in the displacement direction, and the ability to reduce the impact force after the collision may not be stable.
The present invention has been made in view of the above problems, and an object of the present invention is to stabilize the displacement direction of a headlamp when a pedestrian collides with a running car, and to reduce the impact force at the time of a collision. An object of the present invention is to provide a headlamp mounting structure for an automobile, which can improve pedestrian protection performance by relaxing the headlamp.
[0005]
[Means for Solving the Problems]
In the invention according to claim 1 of the present invention, the rear upper portion of the headlamp of the automobile is fixed to the vehicle body at one place via a separate bracket, and the front lower portion of the headlamp is substantially uniaxial in the vehicle width direction. It is characterized by being fixed by a plurality of mounting brackets arranged, wherein the separate bracket is separated into a headlamp side and a vehicle body side while a displacement direction is regulated by the mounting bracket at the time of a collision of an automobile.
[0006]
According to a second aspect of the present invention, in the headlamp mounting structure for an automobile according to the first aspect, the separate bracket is made of a metal part, and a part of the metal part is resin-molded to be integrated with the metal part. It is characterized in that the metal part and the resin part are separated from each other while sliding in the direction of displacement of the headlamp when an automobile collides.
[0007]
According to the third aspect of the present invention, in the headlamp mounting structure for an automobile according to the second aspect, an opening is formed in a part of the metal portion, and the inside of the opening is formed by resin molding of a resin portion. It is characterized in that a shear pin is provided, and the metal part and the resin part are separated by breaking the shear pin upon collision of an automobile.
[0008]
According to a fourth aspect of the present invention, in the headlamp mounting structure for an automobile according to any one of the first to third aspects, the front lower portion of the headlamp and the vehicle body are rotatably fixed via a pivot pin. The rear upper portion of the headlamp is displaced such that the upper portion of the headlamp rotates about the pivot pin when the vehicle collides.
[0009]
Function and effect of the present invention
According to the first aspect of the present invention, the rear upper portion of the vehicle headlamp is fixed to the vehicle body at one place via a separate bracket, and the front lower portion is substantially uniaxially mounted in the vehicle width direction by the mounting bracket. Since the headlamp and the vehicle body are fixed at a plurality of locations, the headlamp and the vehicle body have a triangular mounting structure having a top portion on the rear side and a bottom portion on the front side, and both are fixed in a stable state.
[0010]
Also, since the separate bracket separates into the headlamp side and the vehicle body side at the time of the collision of the vehicle, the operation of the displacement of the headlamp is stabilized as compared with the displacement of the headlamp in a plurality of break modes as in the conventional invention. Can be.
[0011]
In addition, since the separate bracket is separated while the displacement direction is regulated by the mounting bracket, the headlamp can be displaced at a predetermined angle regardless of the location and direction of the impact force received by the headlamp at the time of collision. The reproducibility of the operation of the displacement of the headlamp at the time of the collision is higher than that of the collision.
[0012]
According to the second aspect of the present invention, the separate bracket is formed of a metal part made of metal and a resin part made of resin formed integrally with the metal part by molding a part of the metal part with resin. In addition, the metal portion and the resin portion can be firmly fixed, and the separate bracket does not vibrate or separate when the headlamp is mounted on the vehicle body, when the vehicle is transported, or when the vehicle is running.
[0013]
Further, since the metal part and the resin part are separated from each other while sliding in the direction of displacement of the headlamp, a frictional force is generated between the metal part and the resin part, so that the impact force at the time of a collision is reduced. Contribute to improvement.
[0014]
According to the third aspect of the present invention, the metal portion and the resin portion can be more firmly fixed by the shear pin provided inside the opening hole of the metal portion.
In addition, the timing for breaking the shear pin can be set by appropriately setting the thickness and size of the shear pin, and thus the timing for displacing the head lamp can be adjusted.
[0015]
According to the fourth aspect of the present invention, since the front lower portion of the headlamp and the vehicle body are rotatably fixed via the pivot pin, the rear upper portion of the headlamp is positioned at the center of the pivot pin when the vehicle collides. The head lamp is displaced while rotating backward, and the operation of displacement of the headlamp can be further stabilized.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a headlamp mounting structure for a vehicle according to the present invention will be described.
<Embodiment 1>
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side sectional view of a headlamp in a vehicle headlamp mounting structure according to a first embodiment of the present invention, FIG. 2 is a perspective view illustrating a mounting state of the headlamp according to the present embodiment, and FIG. FIG. 4 is a plan view of a metal part, FIG. 5 is a sectional view taken along line S5-S5 in FIG. 3, and FIG. 6 is a headlamp mounting structure for an automobile according to the present embodiment. It is a figure explaining the operation and effect of.
[0017]
As shown in FIG. 1, the headlamp mounting structure for a vehicle according to the present embodiment has a headlamp 3 disposed between a hood 1 and a bumper fascia 2 so as to substantially extend along a front end extension of the hood 1. Have been.
[0018]
The headlamp 3 is configured such that a high beam lamp light room 4, a low beam lamp light room 5, and a turn signal lamp light room (not shown) are surrounded by an outer lens 6 and a resin headlamp housing 7. ing.
[0019]
The high beam lamp room 4 includes front and rear covers 4c and 4d for covering the bulb 4a and the reflector 4b from the outside.
The low beam lamp room 5 includes a reflector 5b that covers the inner periphery of the bulb 5a from outside. In addition, 8 is a decorative board.
[0020]
A locking groove 7b is formed at the front end of the bottom surface 7a of the headlamp housing 7, and the lower end of the outer lens 6 is supported and fixed to the locking groove 7b.
[0021]
Further, as shown in FIGS. 1 and 2, two mounting brackets 10a and 10b projecting downward are formed on the bottom surface portion 7a so as to be separated from each other in the vehicle width direction.
Each of the mounting brackets 10a and 10b has a U-shaped cross-sectional shape opened to the front side, and has bolt insertion holes 10c and 10d at its lower end.
[0022]
On the other hand, the head lamp stay 12 having a U-shaped cross section projecting from the radiator core support side 9 of the radiator core support RS and opening downward is provided with bolt insertion holes 10c and 10d of the mounting brackets 10a and 10b. Bolt insertion holes 12a and 12b are provided at positions corresponding to the head lamp 3 by inserting bolts into the bolt insertion holes 12a and 12b and the bolt insertion holes 10c and 10d and fixing them with nuts. The lower part is fixed to the vehicle body (head lamp stay 12).
[0023]
A rear wall 7e is formed on the rear side of the bottom surface 7a. The side wall 7e is provided with an opening 7f for accommodating the cover 4d of the high beam lamp room 4 and the opening 7f. The protrusion 4e of the cover 4d is fitted to the edge of 7f, so that the cover 4d can be detached rearward when replacing the valve 4a.
[0024]
An opening 7g for mounting the bulb 5a of the low beam lamp room 5 is provided above the opening 7f, and an outer peripheral portion of the socket 5c of the bulb 5a is fitted to an edge of the opening 7g. When the valve 5a is replaced, the socket 5c can be detached rearward.
[0025]
Above the opening 7g, there is formed a shock absorbing portion 7h having an open cross section that is open forward, and a plurality of ribs 7i are formed inside the shock absorbing portion 7h in the vehicle width direction.
[0026]
An inclined surface 71 that forms a predetermined angle α in the vertical direction of the vehicle and has two bolt insertion holes 7j and 7k in the vehicle width direction is formed in a rear portion of the shock absorbing portion 7h. A separate bracket 13 to be described later is fixed to the inclined surface 71.
[0027]
The angle α is set so that the angle line BB of the inclined surface 7l and the line AA connecting the bolt insertion hole 7j of the inclined surface 7l to the bolt insertion hole 10c of the mounting bracket 10a are substantially orthogonal to each other. Is set.
[0028]
As shown in FIG. 3, the separate bracket 13 includes a metal part 16 made of metal and a resin part 17 made of resin.
[0029]
As shown in FIG. 4, the metal part 16 is formed by processing a metal plate into a substantially U-shape, and bolts are provided on the base end side at positions corresponding to the bolt insertion holes 7j and 7k of the inclined surface 7l. Insertion holes 16a and 16b are provided respectively.
[0030]
On the other hand, sliding portions 16c and 16d are formed on the distal end side of the metal portion 16, respectively, and the sliding portions 16c and 16d are formed with opening holes 16e and 16f in the middle.
[0031]
In the separate bracket 13, when the resin portion 17 is formed, the sliding portions 16 c and 16 d and the resin portion 17 are integrally formed by resin-molding an intermediate portion of the sliding portions 16 c and 16 d.
Therefore, as shown in FIG. 5, in the opening holes 16e and 16f, shear pins P1 and P2 are formed by resin molding of the resin portion 17, respectively, and the sliding portions 16c and 16d and the resin portion 17 are fixed. ing.
[0032]
The resin portion 17 has legs 17a and 17b, and mounting ends 17e and 17f having bolt insertion holes 17c and 17d are formed at the tips of the legs 17a and 17b.
[0033]
On the other hand, as shown in FIG. 2, bolt insertion holes are formed at positions corresponding to the bolt insertion holes 17 c and 17 d at front end side front surfaces of upper side portions 15 located at both ends of the radiator core upper 14 in the radiator core support RS. 15a and 15b are provided.
[0034]
Then, as shown in FIG. 1, the metal part 16 of the separate bracket 13 is formed by inserting bolts into the bolt insertion holes 16a, 16b and the bolt insertion holes 7j, 7k of the inclined surface 7l and fixing them with nuts. It is fixed to the headlamp 3 side (the inclined surface 7l) and is in a state of forming the same angle α as the inclined surface 7l.
On the other hand, the resin portion 17 of the separate bracket 13 is inserted into the bolt insertion holes 17c and 17d and the bolt insertion holes 15a and 15b of the upper side portion 15 and fixed with nuts, thereby securing the resin portion 17 on the vehicle body side (upper side portion). 15).
[0035]
An upper front side of the shock absorbing portion 7h is bent rearward in the vicinity of the decorative plate 8, and a locking groove 7m is provided at a front end thereof. The upper front end of the outer lens 6 is supported and fixed to the locking groove 7m. I have.
[0036]
Reference numeral 7n denotes a holding piece that supports the decorative plate 8 by holding a projection 8a protruding from the bottom surface of the decorative plate 8, and the holding member 8a and the headlamp housing 7 are integrally formed.
[0037]
Hereinafter, the operation and effect of the vehicle headlamp mounting structure of the present embodiment will be described.
In the headlamp mounting structure for a vehicle according to the present embodiment, the headlamp 3 and the vehicle body are fixed to one place via a separate bracket 13 at the upper rear side and the mounting brackets 10a and 10b at the lower front side. It is fixed at a total of three places by fixing at two places.
[0038]
Therefore, the fixed point between the headlamp 3 and the vehicle body has a triangular statically fixed structure, and is fixed in a very stable state.
[0039]
Then, as shown in FIG. 6A, when the car collides with a pedestrian, especially a child, the head of the child collides with a headlamp of the car, and the impact force (illustrated by an arrow P in the figure) is reduced. The light is input from the front diagonally upper part of the headlamp 3 and transmitted to the rear diagonally lower part.
[0040]
Next, as shown in FIG. 6B, the shock absorbing portion 7h is deformed so as to be squashed downward to absorb the impact force, and when the impact force reaches a predetermined value, the metal portion 16 When the shear pins P1 and P2 are broken, the metal portion 16 is separated from the resin portion 17 while sliding, and the head lamp 3 is displaced rearward.
[0041]
At this time, the displacement direction of the headlamp 3 is restricted to the angle α by the mounting brackets 10a and 10b, and the angle α substantially matches the direction of the impact force.
Further, the metal portion 16 and the resin portion 17 slide to generate frictional resistance, which acts to reduce the impact force.
Further, the mounting brackets 10a and 10b are formed in a U-shaped cross-sectional shape that is open to the front side, are formed to have a lower rigidity in the front-rear direction than in the vehicle width direction, and have an angle α of the inclined surface 7l. Since the angle line BB and the line AA connecting the bolt insertion hole 7i to the bolt insertion hole 10c of the mounting bracket 10a are set so as to be substantially orthogonal to each other, the head lamp 3 is After the resin part 16 and the resin part 17 are separated from each other, the resin part 17 is displaced so as to rotate rearward with the bolt insertion hole 10c as a center O.
[0042]
Therefore, in the vehicle headlamp mounting structure according to the present embodiment, the metal bracket 16 on the headlamp 3 side and the resin part on the vehicle body side while the displacement direction of the separate bracket 13 is restricted to the angle α by the mounting brackets 10a and 10b. 17, the operation of displacement of the headlamp can be stabilized.
In addition, the direction of the impact force at the time of the collision (the direction in which the child's head collides) and the direction of the displacement of the headlamp 3 coincide with each other, so that the impact force can be eased smoothly. Head damage can be minimized.
[0043]
Further, after the metal part 16 and the resin part 17 of the separate bracket are separated, the headlamp 3 is displaced so as to rotate rearward around the bolt insertion hole 10c as a center O, so that the impact force at the time of collision is reduced. Can be dispersed and absorbed efficiently.
[0044]
Further, the impact absorbing portion 7h is crushed during the collision of the automobile and absorbs the impact force, so that the severity of damage to the pedestrian can be reduced.
[0045]
<Embodiment 2>
Hereinafter, Embodiment 2 of the present invention will be described.
The headlamp mounting structure for a vehicle according to the present embodiment is the same as that of the first embodiment except that the shape of the mounting bracket is changed. Therefore, the same members are denoted by the same reference numerals and description thereof is omitted. I do.
[0046]
FIG. 7 is a side sectional view of a headlamp in a vehicle headlamp mounting structure according to a second embodiment of the present invention, FIG. 8 is a perspective view illustrating a mounting state of the headlamp of the present embodiment, and FIG. It is a figure explaining the effect of the mounting structure of the headlamp of the form.
[0047]
As shown in FIGS. 7 and 8, in the vehicle headlamp mounting structure of the present embodiment, two mounting brackets 20 and 21 projecting downward are provided on the bottom surface 7 a of the headlamp housing 7 in the vehicle width direction. Respectively.
[0048]
Each of the mounting brackets 20 and 21 is formed in a U-shaped cross-sectional shape that is opened forward.
[0049]
At the lower ends of the mounting brackets 20 and 21, the pivot pins P3 and P4 are fixed respectively while penetrating the U-shaped side wall portions, and the pivot pins P3 and P4 are respectively fixed. By being rotatably fixed to bearing portions 22 and 23 protruding from the front surface of the headlamp stay 12, the mounting brackets 20 and 21 are rotatably supported inward in the vehicle (the direction of arrow T in FIG. 8). ing.
[0050]
The operation of the vehicle headlamp mounting structure according to the present embodiment is such that the upper portion of the rear side of the headlamp 3 at the time of the collision of the vehicle has the upper center of the pivot pins P3 and P4 of the mounting brackets 20 and 21 as the center. The rotation is similar to that of the first embodiment except that the rear upper portion of the headlamp 3 is displaced obliquely downward on the rear side, and the description thereof is omitted.
[0051]
Therefore, in the headlamp mounting structure for a vehicle according to the present embodiment, there is an effect that the displacement of the headlamp 3 can be stabilized and the displacement of the headlamp 3 can be stabilized by the pivot pins P3 and P4.
[0052]
The embodiment of the present invention has been described above. However, the specific configuration of the present invention is not limited to the present embodiment, and the present invention is applicable even if there is a design change without departing from the gist of the invention. include.
For example, the number and shape of the shear pins P1 and P2 can be appropriately set.
[0053]
In addition, the metal part of the separate bracket may be formed in a T-shape (see FIGS. 9 to 11), and at this time, a structure may be provided in which the ribs 30 are provided on the legs to increase the overall rigidity.
[0054]
Further, in order to impart frictional resistance to the sliding portion of the metal portion according to the shape of the metal portion, the sliding portion may be formed by bending (see FIG. 12) or may be formed in a sawtooth shape (see FIG. 12). 13). Furthermore, a structure without shear pins can be obtained by changing the shape of these metal parts.
[0055]
In this embodiment, the metal part 16 is fixed to the headlamp 3 and the resin part 17 is fixed to the vehicle body. However, the metal part 16 is fixed to the vehicle body and the resin part 17 is fixed to the headlamp 3. Can be considered.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a front portion of an automobile according to Embodiment 1 of the present invention.
FIG. 2 is a perspective view illustrating an attached state of a headlamp according to the present embodiment.
FIG. 3 is a perspective view of a separate bracket.
FIG. 4 is a plan view of a metal part.
FIG. 5 is a sectional view taken along line S5-S5 of FIG. 3;
FIG. 6 is a diagram illustrating the operation and effects of the vehicle headlamp mounting structure according to the present embodiment.
FIG. 7 is a side sectional view showing a front portion of an automobile according to Embodiment 2 of the present invention.
FIG. 8 is a perspective view illustrating an attached state of a headlamp according to the present embodiment.
FIG. 9 is a perspective view of another separate bracket.
FIG. 10 is a sectional view taken along S10-S10 of FIG. 9;
FIG. 11 is a plan view of a metal part of another separate bracket.
FIG. 12 is a plan view of another metal part.
FIG. 13 is a plan view of another metal part.
[Explanation of symbols]
P1, P2 Sharp pins P3, P4 Pivot pin 1 Bonnet hood 2 Bumper fascia 3 Head lamp 4 High beam lamp light room 4a, 5a Bulb 4b, 5b Reflector 4c, 4d Cover 5 Low beam lamp light room 6 Outer lens 7 Head lamp housing 7a Bottom part 7e Side walls 7f, 7g Opening 7h Shock absorbing portion 7i Rib 7l Inclined surface 7m Locking groove 7n Holding piece 8 Decorative plate 8a Projection 9 Radiator core support side 10a, 10b Mounting brackets 10c, 10d, 12a, 12b, 7j, 7k , 16a, 16b, 17c, 17d, 15a, 15b Bolt insertion hole 12 Head lamp stay 13 Separate bracket 15 Upper side part 16 Metal part 16c, 16d Sliding part 16e, 16f Opening hole 17 Resin part 17a, 17b Leg 17e , 17f mounting surface Parts 20, 21 Mounting brackets 22, 23 Bearing part

Claims (4)

The rear upper part of the headlamp of the car is fixed to the car body at one place via a separate bracket,
The front lower part of the headlamp is fixed with a plurality of mounting brackets arranged substantially on one axis in the vehicle width direction,
A headlamp mounting structure for an automobile, wherein the separate bracket is separated into a headlamp side and a vehicle body side while a displacement direction is regulated by the mounting bracket at the time of collision of the automobile. 2. The headlamp mounting structure for an automobile according to claim 1, wherein the separate bracket is a metal part made of metal, and a resin part is formed integrally with the metal part by molding a part of the metal part with resin. Composed of
A headlamp mounting structure for an automobile, wherein a part of the metal part and the resin part are separated from each other while sliding in the direction of displacement of the headlamp when the automobile collides. 3. The headlamp mounting structure for an automobile according to claim 2, wherein an opening is formed in a part of the metal part, and a shear pin formed by a resin mold of a resin part is provided inside the opening.
A headlamp mounting structure for an automobile, wherein the metal part and the resin part are separated by breaking the shear pin when the automobile collides. The vehicle headlamp mounting structure according to any one of claims 1 to 3, wherein a front lower portion of the headlamp and a vehicle body are rotatably fixed via a pivot pin,
A headlamp mounting structure for a vehicle, wherein the rear upper portion of the headlamp is displaced so as to rotate about the pivot pin when the vehicle collides.

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