JP3628264B2 - Vehicle headlamp mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for mounting a headlamp attached to the front surface of a vehicle.
[0002]
[Prior art]
Conventionally, as a mounting device for this type of headlamp, a bracket for mounting the headlamp on the vehicle body is connected, and an opening is formed corresponding to the headlamp in a bumper whose central portion is fixed to the vehicle body. A support structure for a bumper in which a tip end portion and an end portion of the bumper are connected by a stay is disclosed (Japanese Utility Model Publication No. 4-3880). In this bumper support structure, the stay is formed wide in the vertical direction, and a pair of attachment portions for attachment to the bracket and the bumper are formed at both ends. Between these attachment parts, an impact absorbing part formed in a V-shaped or Ω-shaped cross section is provided.
In the support structure of the bumper configured in this way, even if the front bumper receives a shock from the side or the front and causes a slight deformation, this shock is reliably absorbed by the shock absorbing portion of the stay. Does not deform. As a result, the headlamp can always maintain normal illumination without causing any deviation in the optical axis.
[0003]
[Problems to be solved by the invention]
However, in the bumper support structure disclosed in the above Japanese Utility Model Publication No. 4-3880, if the impact absorbing portion of the stay is plastically deformed, the bumper may come into contact with the headlamp and the headlamp may be damaged. .
The first object of the present invention is to prevent damage to the headlamp by bringing the bumper into contact with the stopper or the tip of the lamp stay instead of the headlamp when a small load is applied to the bumper from the front or obliquely forward. Another object is to provide a mounting device for a vehicle headlamp.
The second object of the present invention is to bend the lamp stay or the stay main body at or near the base end when a light load is applied to the bumper from the front or obliquely forward, and the deformation resistance causes the above-described light resistance. An object of the present invention is to provide a vehicle headlamp mounting device that can prevent damage to a headlamp and a chassis frame by absorbing energy due to a load.
A third object of the present invention is to provide a vehicle headlamp mounting device that can absorb at least a part of energy by a folded plate when a small load is applied to the bumper from the front or obliquely forward. There is.
In the present specification, a small load means a load smaller than a light load.
[0004]
[Means for Solving the Problems]
As shown in FIG. 1, the invention according to claim 1 includes a chassis frame 11 having a bumper 12 attached to the front portion thereof, and a lamp stay 17 having a proximal end fixed to the chassis frame 11 and extending outward in the vehicle width direction. A headlamp 23 attached to the lamp stay 17, an opening 12 a formed so that the headlamp 23 faces the bumper 12, and a stopper 21 protruding from the tip of the lamp stay 17. outer surface that is curved obliquely forward of 21 and a gap L between the inner surface of the bumper 12 opposed to the outer surface, a rear bumper 12 facing front and to the front curved obliquely forward of the headlamp 23 a mounting device for a vehicle headlamp, wherein the gap is narrower than M between.
In the vehicle headlamp mounting device according to the first aspect, when a small load is applied to the bumper 12 from the front or obliquely forward, the bumper 12 is deformed in a direction approaching the stopper 21 and the headlamp 23. Bumper gap L between the time the outer surface which is curved obliquely forward of the stopper 21 and the inner surface of the bumper 12 opposed to the outer surface, facing front and to the front curved obliquely forward of the headlamp 23 12 because of being narrower than the gap M between the rear bumper 12 without contacting the headlamp 23, in contact with the stopper 21. Thereby, damage to the headlamp 23 can be prevented.
When a light load acts on the bumper 12 from the front or obliquely forward, the light load causes the bumper 12 to contact the stopper 21, and in this state, the lamp stay 17 bends at or near the base end. Since the energy due to the light load is absorbed by the deformation resistance of the lamp stay 17, damage to the headlamp 23 and the chassis frame 11 can be prevented.
[0005]
As shown in FIG. 1, the invention according to claim 2 includes a chassis frame 11 having a bumper 12 attached to the front portion thereof, and a lamp stay 17 having a proximal end fixed to the chassis frame 11 and extending outward in the vehicle width direction. A head lamp 23 attached to the lamp stay 17 and an opening 12a formed so that the head lamp 23 faces the bumper 12, and a front end surface curved obliquely forward of the lamp stay 17, and the front end surface and wherein the gap between the inner surface of the opposing bumper 12, is narrower than the gap M between the rear surface of the bumper 12 opposed to the front and the front curved obliquely forward of the headlamp 23 This is a mounting device for a vehicle headlamp.
In the vehicle headlamp mounting device according to the second aspect, when a small load is applied to the bumper 12 from the front or obliquely forward, the bumper 12 is deformed in a direction approaching the tip of the lamp stay 17 and the headlamp 23. . Bumper gap between the time the leading end face which is curved obliquely forward of the lamp stay 17 and the inner surface of the bumper 12 facing the front end face, facing the front and the front curved obliquely forward of the headlamp 23 because it is formed narrower than the gap M between the back of the 12, the bumper 12 without contacting the headlamp 23, in contact with the lamp stay 17.
When a light load is applied to the bumper from the front or diagonally forward, the light load causes the bumper to contact the tip of the lamp stay, and in this state, the lamp stay bends at or near the base end. Since the light resistance is absorbed by the deformation resistance of the lamp stay, damage to the headlamp and the chassis frame can be prevented.
[0006]
The invention according to claim 3 is the invention according to claim 1, and further, as shown in FIG. 1, a stay attaching portion 18 having a high rigidity structure in which the lamp stay 17 is attached to the chassis frame 11, and a base end And a stay main body 19 having a low rigidity structure that is fixed to the stay mounting portion 18 and extends outward in the vehicle width direction. When a load acts on the bumper 12 from the front or obliquely forward, the bumper 12 contacts the stopper 21. The stay main body 19 is configured to bend at the base end or in the vicinity of the base end in a state where the bumper 12 is in contact with the stopper 21 when a load larger than the above load is applied.
In the vehicle headlamp mounting device according to the third aspect, when a light load is applied to the bumper 12 from the front or obliquely forward, the bumper 12 contacts the stopper 21 due to the light load, and in this state, the low-rigidity structure is provided. The stay main body 19 bends at or near the base end. Since the energy due to the light load is absorbed by the deformation resistance of the stay body 19, damage to the headlamp 23 and the chassis frame 11 can be prevented.
[0007]
The invention according to claim 4 is the invention according to claim 2, and as shown in FIG. 1, a stay mounting portion 18 having a high rigidity structure in which a lamp stay 17 is mounted on the chassis frame 11, and a base end And a stay main body 19 having a low rigidity structure that is fixed to the stay mounting portion 18 and extends outward in the vehicle width direction. When a load is applied to the bumper 12 from the front or diagonally forward, the bumper 12 is at the tip of the stay main body 19. The stay main body 19 is configured to bend at or near the base end in a state where the bumper 12 is in contact with the tip of the stay main body 19 when a load larger than the above load is applied. .
In the vehicle headlamp mounting device according to the fourth aspect, when a light load is applied to the bumper 12 from the front or obliquely forward, the bumper 12 comes into contact with the tip of the stay main body 19 due to the light load. The stay main body 19 having a low rigidity structure bends at or near the base end. Since the energy due to the light load is absorbed by the deformation resistance of the stay body 19, damage to the headlamp 23 and the chassis frame 11 can be prevented.
[0008]
The invention according to claim 5 is the invention according to any one of claims 1 to 4, and further, as shown in FIGS. 1 and 5, the tip of the lamp stay 17 and the bumper 12 are connected by a folding plate 26. The folding plate 26 is configured to absorb at least part of the energy due to the load when a load is applied to the bumper 12 from the front or obliquely forward.
In the vehicle headlamp mounting device according to the fifth aspect, when a small load is applied to the bumper 12 from the front or obliquely forward, the bumper 12 tends to deform in a direction approaching the tip of the stopper 21 or the lamp stay 17. However, since the folded plate 26 becomes a resistance to the deformation, a part of the energy due to the small load is absorbed by the deformation of the folded plate 26.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1, 6, and 7, a chassis frame 11 extending in the traveling direction is provided on the track 10, and a front bumper 12 is attached to a front portion of the chassis frame 11 via a bumper stay 13. . The front bumper 12 is attached to the chassis frame 11 so as to extend in the vehicle width direction below the front surface of the cab 10a. The bumper stay 13 is formed in a substantially T-shape, and a base portion 13a fixed to the front outer surface of the chassis frame 11 with bolts and nuts (not shown), and a bumper extending and fixed to the base portion 13a in the vehicle width direction. And an attachment portion 13b. A reinforcing member 14 is welded to the rear surface of the front bumper 12, and a plurality of bolts 15 are welded to the reinforcing member 14 so as to protrude rearward (FIGS. 1 to 4 and 6). The front bumper 12 is fixed to the bumper mounting portion 13 b by the plurality of bolts 15 and nuts 16.
[0011]
The base end of the lamp stay 17 is attached to the front outer surface of the chassis frame 11. The lamp stay 17 includes a stay mounting portion 18 having a high rigidity structure attached to the chassis frame 11, a stay body 19 having a low rigidity structure having a base portion fixed to the stay mounting portion 18 and a pair of arms extending outward in the vehicle width direction. (FIGS. 1 to 4 and FIG. 6). The stay mounting portion 18 is formed into a channel shape by pressing a steel plate, and the base portion 19a and the pair of arms 19b and 19c of the stay main body 19 are integrally formed so that the cross-sectional shape becomes a channel shape by pressing the steel plate. Is done. Further, the base ends of the stay attaching portion 18 and the stay main body 19 are sandwiched between the reinforcing member 14 and the bumper attaching portion 13b.
[0012]
On the other hand, a pair of stoppers 21, 21 project from the tip of the stay body 19 toward the front bumper 12. These stoppers 21 and 21 are integrally formed in a state where the stoppers 21 and 21 are connected to each other by a connecting member 22 by pressing a steel plate, and are welded in a state where the stoppers 21 and 21 are stretched over the ends of the pair of arms 19b and 19c. The stay body 19, the pair of stoppers 21 and 21, and the connecting member 22 form a square hole 19 d into which the headlamp 23 can be loosely inserted. In this state, the headlamp 23 is attached to the stay body 19 with bolts 24 (FIG. 6). (FIGS. 1 to 3). The gap L between the inner surface of the bumper 12 opposed to the outer surface and an outer surface which is curved obliquely forward of the stopper 21, the bumper 12 facing front and to the front curved obliquely forward of the headlamp 23 It is formed narrower than the gap M between the back surface (FIG. 1). The front bumper 12 is formed with an opening 12a so that the headlamp 23 faces. In addition, the code | symbol 25 of FIG.6 and FIG.7 is the spoiler attached to the lower end of the front bumper 12. FIG.
[0013]
Further, as shown in FIGS. 5 and 6, the tip of the stay main body 19 and the front bumper 12 are connected by a folding plate 26. The bent plate 26 is formed by bending spring steel or the like having elasticity. One end of the folding plate 26 is welded to the inner surface of the front bumper 12, and the other end is fixed to the connecting member 22 via a bolt 27 and a nut 28. Further, as shown in FIGS. 1 to 3 and FIG. 6, a bending guide portion 19 e serving as a starting point for bending the stay main body 19 is formed in the vicinity of the base end of the stay main body 19, that is, the base ends of the pair of arms 19 b and 19 c. Is done. In this embodiment, the bending guiding portion 19e is a substantially V-shaped notch.
[0014]
The operation of the mounting apparatus for the headlamp 23 configured as described above will be described.
When the front bumper 12 comes into contact with the obstacle 29 and a small load is applied to the front bumper 12 from the front or obliquely forward when the truck 10 turns at the intersection of the narrow road, the front bumper 12 approaches the stopper 21 in a direction. Deform. However, since the folding plate 26 (FIGS. 5 and 6) provides resistance to deformation, a part of the energy due to the small load is absorbed by the deformation of the folding plate 26.
On the other hand, when a light load is applied to the front bumper 12 from the front or diagonally forward, a part of the energy due to the light load is absorbed by the deformation of the folded plate 26, and then the front bumper 12 contacts the stopper 21 (FIG. 2). In this state, the stay main body 19 having a low-rigidity structure is bent at the bending guide portion 19e near the base end (FIG. 3). Since all the energy due to the light load is absorbed by the deformation resistance of the stay main body 19, the headlamp 23 and the chassis frame 11 are not damaged.
[0015]
8 and 9 show a second embodiment of the present invention. 8 and 9, the same reference numerals as those in FIGS. 4 and 6 denote the same components.
In this embodiment, the stay main body 59 of the lamp stay 57 is formed by bending a pipe such as a steel pipe, and its proximal end is fixed to the stay mounting portion 18. The stay main body 59 and the stay attaching portion 18 form a square hole 59d into which the headlamp 23 can be loosely inserted. The pair of stoppers 21 and 21 are welded together with the connecting member 22 to the tip of the stay main body 59. Further, a bending guiding portion 59e is formed in the vicinity of the base end of the stay main body 59, and the bending guiding portion 59e is a bead in which the pipe is dented in a substantially V shape. The configuration other than the above is the same as that of the first embodiment.
In the mounting apparatus for the headlamp 23 thus configured, the operation is substantially the same as the operation of the first embodiment except that the stay main body 59 of the lamp stay 57 is relatively easy to manufacture. Because of this, repeated explanation is omitted.
[0016]
In the first and second embodiments, the lamp stay has the stay mounting portion and the stay main body. However, the lamp stay may have no stay mounting portion. In this case, the base end of the lamp stay (stay body) is directly attached to the chassis frame, or is attached to the chassis frame via the bumper stay.
Moreover, in the said 1st and 2nd embodiment, although the stopper was fixed to the front-end | tip of a stay main body, there may not be a stopper. In this case, when a small load from the front or obliquely forward bumper acting, clearance between the front end surface which is curved obliquely forward of the lamp stay and the inner surface of the bumper facing the front end face, obliquely forward of the headlamp because it is narrower than the gap M between the front curved and the back of the bumper facing the front, the bumper without contacting the headlamp into contact with the tip of the lamp stay.
Furthermore, in the first embodiment, a substantially V-shaped notch is formed in the vicinity of the base end of the stay main body as the bending guide portion. A recessed bead may be formed.
[0017]
【The invention's effect】
As described above, according to the present invention, the bumper is attached to the front portion of the chassis frame, the lamp stay having the base end fixed to the chassis frame extends outward in the vehicle width direction, and the headlamp is attached to the lamp stay. Mounting, forming an opening so that the headlamp faces the bumper, projecting a stopper at the tip of the lamp stay, and further bending the outer surface of the stopper diagonally forward and the inner surface of the bumper facing this outer surface the gap between, since the narrower than the gap between the front and back of the bumper facing the front curved obliquely forward of the headlamp, when the small load from the front or obliquely forward bumper acting, bumper Contact the stopper without contacting the headlamp. As a result, damage to the headlamp can be prevented. When a light load is applied to the bumper from the front or diagonally forward, the light load causes the bumper to contact the stopper, and in this state, the lamp stay bends at or near the base end. As a result, energy due to the light load is absorbed by the deformation resistance of the lamp stay, so that damage to the headlamp and the chassis frame can be prevented.
[0018]
A bumper is attached to the front of the chassis frame, a lamp stay with the base end fixed to the chassis frame extends outward in the vehicle width direction, a headlamp is attached to the lamp stay, and the headlamp faces the bumper. part is formed, opposes further the gap between the front end surface and the inner surface of the bumper facing the distal end surface which is curved obliquely forward of the stay lamps, this front and front curved obliquely forward of the headlamp If it is formed narrower than the gap between the bumper and the back surface, when a small load is applied to the bumper from the front or diagonally forward, the bumper does not contact the headlamp but contacts the tip of the lamp stay. As a result, similarly to the above, damage to the headlamp can be prevented. When a light load is applied to the bumper from the front or diagonally forward, the light load causes the bumper to contact the tip of the lamp stay, and in this state, the lamp stay bends at or near the base end. As a result, the energy due to the light load is absorbed by the deformation resistance of the lamp stay, so that the head lamp and the chassis frame can be prevented from being damaged in the same manner as described above.
[0019]
If the stay mounting part of the high rigidity structure of the lamp stay is attached to the chassis frame, and the base end of the low rigidity structure stay body extending outward in the vehicle width direction is fixed to the stay mounting part, the bumper can be viewed from the front or diagonally forward. When a small load is applied, the bumper contacts the tip of the stopper or stay body. When a light load is applied to the bumper from the front or diagonally forward, the base of the stay is its base end with the bumper contacting the stopper or the tip of the stay body. Or it bends in the vicinity of the base end. As a result, energy due to the light load is absorbed by the deformation resistance of the stay main body, so that damage to the headlamp and the chassis frame can be prevented.
Furthermore, if the tip of the lamp stay and the bumper are connected by a folding plate, if a small load is applied to the bumper from the front or diagonally forward, the bumper will be deformed in the direction approaching the tip of the stopper or the lamp stay. since the plate is resistance of the deformation, Ru is absorbed by the deformation of the part foldable plate of energy by the small load.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view taken along line AA of FIG. 7 showing a mounting device for a vehicle headlamp according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view corresponding to FIG. 1 showing a state where a bumper contacts an obstacle and a small load acts on the bumper, and an inner surface of the bumper abuts against an outer surface of the stopper due to the small load.
3 is a cross-sectional view corresponding to FIG. 1 showing a state in which a light load acts on the bumper and the stay body is bent by the light load.
4 is a sectional view taken along line BB in FIG.
FIG. 5 is an enlarged cross-sectional view of a portion C in FIG.
6 is an exploded perspective view of a portion D in FIG. 7;
FIG. 7 is a front view of a truck including the bumper.
FIG. 8 is an exploded perspective view corresponding to FIG. 6, showing a second embodiment of the present invention.
9 is a cross-sectional view corresponding to FIG. 4 including a bumper and a lamp stay.
[Explanation of symbols]
10 Truck (vehicle)
DESCRIPTION OF SYMBOLS 11 Chassis frame 12 Front bumper 12a Opening part 17,57 Lamp stay 18 Stay mounting part 19,59 Stay main body 19e, 59e Bending guide part 21 Stopper 23 Headlamp 26 Folding plate

Claims (5)

A chassis frame (11) with a bumper (12) attached to the front,
A lamp stay (17) having a base end fixed to the chassis frame (11) and extending outward in the vehicle width direction; and
A headlamp (23) attached to the lamp stay (17);
An opening (12a) formed so that the headlamp (23) faces the bumper (12);
A stopper (21) protruding from the tip of the lamp stay (17),
The gap between the inner surface of the stopper outer surface which is curved obliquely forward (21) and the bumper facing the outer surface (12) (L) is curved obliquely forward of the headlamp (23) A vehicle headlamp mounting device, characterized in that it is formed narrower than a gap (M) between a front surface and a back surface of the bumper (12) facing the front surface . A chassis frame (11) with a bumper (12) attached to the front,
A lamp stay (17) having a base end fixed to the chassis frame (11) and extending outward in the vehicle width direction; and
A headlamp (23) attached to the lamp stay (17);
An opening (12a) formed so that the headlamp (23) faces the bumper (12),
Front clearance between the inner surface of the bumper facing the distal end surface and the tip surface that is curved obliquely forward of the lamp stay (17) (12), which is curved obliquely forward of the headlamp (23) And a vehicular headlamp mounting device, which is formed narrower than a gap (M) between the front surface of the bumper (12) and the back surface of the bumper (12). A stay mounting portion (18) having a high rigidity structure in which the lamp stay (17) is mounted on the chassis frame (11), and a low rigidity extending to the outside in the vehicle width direction with the base end fixed to the stay mounting portion (18). A stay body (19) having a structure,
The bumper (12) contacts the stopper (21) when a load is applied to the bumper (12) from the front or obliquely forward, and the bumper (12) is moved to the stopper (21 when a load greater than the load is applied. 2. The vehicle headlamp mounting device according to claim 1, wherein the stay main body is bent at or near the base end thereof in contact with the head main body. A stay mounting portion (18) having a high rigidity structure in which the lamp stay (17) is mounted on the chassis frame (11), and a low rigidity extending to the outside in the vehicle width direction with the base end fixed to the stay mounting portion (18). A stay body (19) having a structure,
When a load is applied to the bumper (12) from the front or obliquely forward, the bumper (12) contacts the tip of the stay body (19), and when a load greater than the load is applied, the bumper (12) 3. The vehicle headlamp mounting device according to claim 2, wherein the stay main body (19) is bent at or near the base end in contact with the tip of the stay main body (19). The tip of the lamp stay (17) and the bumper (12) are connected by a folding plate (26), and when the load acts on the bumper (12) from the front or diagonally forward, the folding plate (26) The vehicle headlamp mounting device according to any one of claims 1 to 4, wherein the vehicle headlamp mounting device is configured to absorb at least part of the energy generated by the vehicle.

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