JP2020199921A - Head lamp impact absorbing structure - Google Patents

Abstract

To provide a head lamp impact absorbing structure in which a head lamp is less likely to be broken even when absorbing a light impact force, and which is facilitated in preventing a head lamp from being displaced or broken by a light input from an unexpected direction.SOLUTION: An impact absorbing structure 10 for fitting a head lamp 11 by fixing a part to be fixed 17a of the head lamp 11 to a fixing part 15 of a vehicle body 12 includes a grommet that is interposed between the fixing part 15 and the part to be fixed 17a. The grommet 20 includes: a breakable projection part 21 projecting on one side and locked to the fixing part 15; and a support part 25 projecting on the other side and supporting the part to be fixed 17a.SELECTED DRAWING: Figure 1

Description

The present invention relates to a headlamp shock absorbing structure.

Conventionally, a headlamp shock absorbing structure has been proposed in which an impact force can be absorbed when a colliding body collides with the headlamp.
For example, Patent Document 1 below proposes a shock absorbing structure in which a headlamp is attached to a vehicle body so that it can be displaced downward when an impact force is applied, a fragile portion is provided in the housing of the headlamp, and a protrusion is provided in the vehicle body. .. In this structure, when the headlamp is displaced downward and interferes with the vehicle body, the housing is broken by the fragile portion to absorb the impact force.

In Patent Document 2 below, a fender has a shock absorbing structure in which a leg portion extending to the rear side is provided on the upper portion of the lens body constituting the design surface of the headlamp, and the tip portion of the leg portion is attached to the lens mounting portion in the fender. It has been proposed that the lens is provided near the parting part between the hood and the hood. In this structure, when a colliding body collides with the upper part of the lens of the headlamp, the leg portion and the lens body are cracked to absorb the impact force.

JP-A-2007-45351 JP-A-2009-208604

However, in the conventional headlamp shock absorbing structure that can absorb the impact force when the collision body collides with the headlamp, the headlamp cracks or breaks when the impact force is input to the headlamp or the vehicle body in the vicinity thereof. Since it absorbs the impact force by squeezing, there is a problem that the headlamp is damaged even when absorbing a light impact force.
Further, since the structure absorbs the impact force input to the front side of the vehicle, there is also a problem that the headlamp is easily displaced or damaged even if the input is from an unintended direction.

Therefore, the first object of the present invention is to provide a headlamp shock absorbing structure in which the headlamp is not easily damaged even if it absorbs a light impact force, and the headlamp is displaced by an input from an unintended direction. Another object is to provide a headlamp shock absorbing structure that can be prevented from being damaged or damaged.

The headlamp shock absorbing structure of the present invention that achieves the first object is a structure in which the fixed portion of the headlamp is fixed to the fixed portion of the vehicle body, and is interposed between the fixed portion and the fixed portion. The structure includes a grommet, and the grommet has a breakable protrusion that protrudes to one side and is locked to the fixing portion, and a support portion that protrudes to the other side and supports the fixed portion.

In addition to the above configuration, the headlamp shock absorbing structure according to claim 2 of the present invention that achieves the first object and the second object is provided with a grommet protruding in a direction intersecting the front-rear direction in the mounted state. It has a breakable first protruding portion and a second protruding portion, and the fixing portion has a first locking portion that immovably locks the first protruding portion and a rearward portion that locks the second protruding portion. The second locking portion has a second locking portion that allows movement to the first locking portion, and the second locking portion locks the second protruding portion in a state where the first protruding portion is locked to the first locking portion. The structure has a stop position and a release position in which the second protruding portion is guided in the disengagement direction by moving backward from the locking position.

In the headlamp shock absorbing structure according to claim 3 of the present invention, the fixed portion is provided so as to project rearward from the headlamp housing, and the supporting portion abuts and supports the fixed portion in the front-rear direction.

According to the headlamp shock absorbing structure of the present invention, the grommet interposed between the fixed portion of the vehicle body and the fixed portion of the headlamp projects to one side and is locked to the fixed portion, and the other side. Since it has a support portion that projects to support the fixed portion, the fixed portion of the vehicle body and the fixed portion of the headlamp can be fixed via the grommet, and the vehicle body and the headlamp are not directly joined.

Since the protruding portion of the grommet can be broken, the fixed state between the vehicle body and the headlamp can be released by breaking the grommet when absorbing a light impact force due to a collision with a colliding body or the like. Therefore, even if the headlamp is displaced with respect to the vehicle body to absorb the impact force, the headlamp can be less likely to be damaged. Therefore, it is possible to provide a headlamp shock absorbing structure in which the headlamp is not easily damaged even if it absorbs a light impact force.

In the headlamp shock absorbing structure of the present invention, the first protruding portion and the second protruding portion are projected on the grommet in the direction intersecting the front-rear direction in the mounted state, and the first protruding portion of the grommet is formed on the fixed portion of the vehicle body. A first locking portion that immovably locks the eyelet, and a second locking portion that has a locking position that locks the second protruding portion in a state where the first protruding portion is locked to the first locking portion. If the headlamp is provided, the headlamp is normally mounted in a stable mounting state with the first protruding portion and the second protruding portion of the grommet locked to the first locking portion and the second locking portion of the vehicle body, respectively. Can be maintained at.

Then, the first protruding portion of the fixed portion is breakable, the second locking portion allows the second protruding portion to move backward, and the second protruding portion moves rearward from the locking position. If it has a release position guided in the detachment direction, the first protrusion can be broken when a large impact force in the front-rear direction of the vehicle is applied to the fixed portion between the vehicle body and the headlamp, and the locking position is further reached. By moving the locked second protruding portion to the release position, the second protruding portion can be separated from the second locking portion. Therefore, the headlight can be moved greatly to sufficiently absorb the impact force.

On the other hand, when there is an input from an unintended direction, the second protruding portion is maintained in the locked position without moving backward, so that the first protruding portion is also maintained in the locked state without breaking. Therefore, since the grommet does not move significantly with respect to the fixed portion, the headlamp can be kept in a fixed state to prevent displacement or damage. Therefore, it is possible to provide a headlamp shock absorbing structure capable of preventing displacement or damage of the headlamp even by input from an unintended direction.

In the headlamp shock absorbing structure of the present invention, if the fixed portion is provided so as to project rearward from the headlamp housing and the supporting portion abuts the fixed portion in the front-rear direction to support the vehicle body and the headlamp. When an impact force in the front-rear direction acts on the fixed part, a sufficient force can be transmitted from the fixed part of the headlamp to the grommet, the first protruding part is surely broken, and the second protruding part is moved from the second locking part. It can be separated.

It is a vertical cross-sectional view which shows the headlamp shock absorption structure which concerns on embodiment of this invention. It is a rear view of the headlamp used in the embodiment of this invention. The fixing portion used in the embodiment of the present invention is shown, (a) is a perspective view, (b) is a plan view, and (c) is a sectional view. The grommet used in the embodiment of the present invention is shown, (a) is a side view, (b) is a bottom view, and (c) is a first protruding portion and a second protruding portion cut at the root position and viewed from the substrate side. It is a partial perspective view.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the front-rear direction is indicated by an arrow D, the vehicle width direction is indicated by an arrow W, the vertical direction is indicated by an arrow H, the front of the vehicle is indicated by Df, the rear of the vehicle is indicated by Dr, the inside of the vehicle width is indicated by Wi, and the outside of the vehicle width is indicated by Wo.
In the present embodiment, as shown in FIG. 1, the headlamps 11 are arranged on the left and right sides of the front portion of the vehicle body 12. Specifically, the headlamp 11 is arranged at a position between the tip of the bonnet 13 of the vehicle body 12 and the bumper 14 between the fender and the grill (not shown).

The shock absorbing structure 10 of the headlamp 11 of the present embodiment fixes the fixed portion 15 provided on the vehicle body 12 side and the fixed portion 17a provided on the headlamp 11 with a grommet 20 interposed therebetween. It is built by doing.

The headlamp 11 is provided with a light emitting portion (not shown) inside the headlamp housing 11a, and a lens 11b is arranged on the front surface. As shown in FIG. 2, fixed portions 17a to 17c to be fixed to surrounding members are provided at a plurality of locations of the headlamp housing 11a.
The outer Wo in the vehicle width direction W is provided with fixed portions 17b fixed to fenders (not shown) on the upper side and the lower side of the vertical direction H, respectively, and is provided on the upper side of the vertical direction H on the vehicle center side which is the inner Wi. Is provided with a fixed portion 17c fixed to a grill (not shown).

A fixed portion 17a is provided on the lower side of the vehicle center side so as to project from the headlamp housing 11a to the rear Dr. In the present embodiment, as shown in FIG. 1, the fixed portion 17a projecting to the rear Dr is composed of a flat plate-shaped rib integrally formed with the headlamp housing 11a, and the rear end portion is formed from the flat plate-shaped rib. A thick-walled edge 17e having a circular cross section is provided.

On the other hand, as shown in FIG. 1, the fixing portion 15 is fixed to the component parts of the vehicle body 12 on the rear end side, specifically, the radiator support 19 fixed to the skeleton member and protrudes to the vehicle front Df side. Consists of brackets. As shown in FIGS. 1 and 3 (a) to 3 (c), the fixing portion 15 has a substantially U-shaped cross section and is formed in a bent shape in the longitudinal direction, and is formed on the upper surface portion on the front end portion side. The 15a is arranged below the fixed portion 17a of the headlamp 11.

The upper surface portion 15a of the fixing portion 15 is provided with a first locking portion 18a and a second locking portion 18b for locking the first protruding portion 21 and the second protruding portion 22 provided so as to project from the grommet 20. Has been done.
The first locking portion 18a includes a through hole that penetrates the first protruding portion 21 of the grommet 20 and locks the grommet 20 immovably.
The second locking portion 18b is locked with a locking position 18c in which the first protruding portion 21 of the grommet 20 is locked by penetrating the second protruding portion 22 in a state of being locked to the first locking portion 18a. It is composed of a through hole in which a release position 18d provided on the rear Dr side of the position 18c and from which the second protruding portion 22 can be detached is provided continuously in the front-rear direction.

The release position 18d is provided so as to penetrate wider than the locking position 18c, and a part of the upper surface portion 15a is bent more than the protrusion amount of the second protrusion 22 so as to be inclined upward toward the rear Dr. It has a guide surface 18e formed in the above. The guide surface 18e is configured so that the second protruding portion 22 can move upward from the second locking portion 18b and guide it by moving from the locking position 18c to the releasing position 18d.

As shown in FIGS. 4 (a) to 4 (c), the grommet 20 arranged between the fixed portion 17a and the fixed portion 15 has the substrate portion 23 arranged on the upper surface portion 15a of the fixed portion 15 and the substrate. The first protruding portion 21 and the second protruding portion 22 which are provided so as to project downward from the portion 23 and are locked to the fixing portion 15 as described above, and the upper side which is the other side from the substrate portion 23. It has a support portion 25 which is provided so as to project to support the fixed portion 17a.

The first protruding portion 21 is provided so as to project downward from the substrate portion 23 so as to intersect the front-rear direction D and extend in the front-rear direction D, and the first protruding portion 21 expands toward the substrate portion 23 on both sides of the root portion 21a. It has a pair of elastic pieces 21b provided so as to open. The second protruding portion 22 is provided so that the ribs 22a arranged in a substantially cross shape project from the substrate portion 23 in the downward direction intersecting the front-rear direction D.

The first protruding portion 21 and the second protruding portion 22 have strength capable of maintaining the relative positions of the fixed portion 15 and the fixed portion 17a in a normal state, and are equal to or more than a predetermined value between the fixed portion 15 and the fixed portion 17a. The first protruding portion 21 is made of a material having a breaking strength when the impact force of the above is applied. In this embodiment, the entire grommet 20 is made of an elastic resin.

As shown in FIGS. 3 (c) and 4 (a), the first protruding portion 21 and the second protruding portion 22 have a through-hole-shaped first locking portion 18a and a through-hole-shaped first locking portion 18a provided in the fixing portion 15, respectively. It is inserted into the second locking portion 18b in the vertical direction H intersecting the front-rear direction D, and is locked in a state where the substrate portion 23 is in contact with the upper surface portion 15a of the fixing portion 15.
The first protruding portion 21 is immovably locked to the first locking portion 18a by a pair of elastic pieces 21b penetrating the first locking portion 18a and being elastically locked on the back surface. Has been done.
The second protruding portion 22 is immovable in the front Df and the vehicle width direction W and is allowed to move to the rear Dr because the side edges of the ribs 22a on the front and both sides abut on the second locking portion 18b. In this state, it is locked at the locking position of the second locking portion 18b.

The support portion 25 includes a recess 25a that abuts and receives an edge portion 17e having a circular cross section provided at the rear end of the fixed portion 17a in the front-rear direction D, a pressing frame 25b that presses the recess 25a inward, and a recess 25a. It is provided with a pressing protrusion 25c that presses the edge portion 17e having a circular cross section housed in the above from the front side. In the support portion 25, the recess 25a is divided into a plurality of portions around the edge portion 17e of the fixed portion 17a so as to be elastically deformable, and the edge portion 17e of the fixed portion 17a is accommodated in the recess 25a. Therefore, it is elastically supported by the recess 25a so as not to be detached.

In order to construct the shock absorbing structure 10 of the headlamp 11 as described above, the edge portion 17e of the fixed portion 17a of the headlamp 11 is press-fitted into the recess 25a of the support portion 25 of the grommet 20 to support it so as not to be detached. The headlamp is obtained by locking the first protruding portion 21 and the second protruding portion 22 of the grommet 20 to the first locking portion 18a and the second locking portion 18b of the fixing portion 15 fixed to the radiator support 19 in advance. The fixed portion 17a of 11 and the fixing portion 15 of the vehicle body 12 are fixed. At this time, the second protruding portion 22 arranged at a predetermined distance from the first protruding portion 21 is arranged at the locking position 18c of the second locking portion 18b. Further, the other fixed portions 17b and 17c of the headlamp 11 are fixed at each position on the vehicle body 12 side, respectively. As a result, the headlamp 11 can be attached to the vehicle body 12 to construct the shock absorbing structure 10.

When the vehicle is used in this state, normally, the first protruding portion 21 and the second protruding portion 22 of the grommet 20 are locked to the first locking portion 18a and the second locking portion 18b of the vehicle body 12, respectively. , The mounting state of the headlamp 11 is stably maintained.
When an impact force is input to the headlamp 11 from the front Df due to a collision body colliding with the front Df side of the vehicle body 12, the fixed portion 17a protruding rearward from the headlamp 11 rearward on the vehicle center side. The pressure is applied to Dr, and the grommet 20 is pressed to the rear Dr by the fixed portion 17a.

Then, since the second protruding portion 22 of the grommet 20 is allowed to move to the rear Dr of the fixed portion 15, the load from the headlamp 11 is applied only to the first protruding portion 21. Therefore, the first protruding portion 21 is strongly pressed against the first locking portion 18a of the fixing portion 15 toward the rear Dr, and a shearing force is applied to the root portion 21a of the first protruding portion 21. As a result, the first protruding portion 21 is broken.
When the first protruding portion 21 breaks, the grommet 20 moves rearward, the second protruding portion 22 moves from the locking position 18c to the releasing position 18d, and the second protruding portion 22 guides the guide surface 18e. Then, it is released from the second locking portion 18b and the locking is released. As a result, the restriction on the position of the headlamp 11 on the central side is released, and the headlamp 11 is largely displaced, so that the impact force is absorbed.

On the other hand, when a force from an unintended direction is input to the headlamp 11, the grommet 20 is pressed in a direction different from the front-rear direction D by the fixed portion 17a of the headlamp 11. Then, the first protruding portion 21 and the second protruding portion 22 of the grommet 20 are pressed against the first locking portion 18a and the second locking portion 18b in a direction different from that of the rear Dr, and the load from the headlamp 11 is applied. Is dispersed. Therefore, the second protruding portion 22 is maintained at the locking position 18c of the second locking portion 18b, and the first protruding portion 22 is maintained at the position of the first locking portion 18a without breaking. As a result, the first protruding portion 21 and the second protruding portion 22 are maintained at the initial positions, and the position of the headlamp 11 can be maintained.

According to the shock absorbing structure 10 of the headlamp 11 of the present embodiment as described above, the grommet 20 interposed between the fixed portion 15 of the vehicle body 12 and the fixed portion 17a of the headlamp 11 protrudes to one side. It has protruding portions 21 and 22 that are locked to the fixed portion 15, and a supporting portion 25 that projects to the other side and supports the fixed portion 17a. Therefore, the fixed portion 15 of the vehicle body 12 and the fixed portion 17a of the headlamp 11 can be fixed via the grommet 20, and the vehicle body 12 and the headlamp 11 are not directly joined.

Since the first protruding portion 21 of the grommet 20 can be broken, when the impact force is absorbed due to a collision with a colliding body or the like, the grommet 20 breaks to fix the vehicle body 12 and the headlamp 11. Can be released. Therefore, even if the headlamp 11 is displaced with respect to the vehicle body 12 to absorb the impact force, the headlamp 12 is unlikely to be damaged. Therefore, even if the impact force is absorbed, the headlamp 11 can be less likely to be damaged.

In the shock absorbing structure 10 of the headlamp 11 of the present embodiment, the first protruding portion 21 and the second protruding portion 22 project from the grommet 20 in a fixed state in a direction intersecting the front-rear direction D, and the fixed portion of the vehicle body 12 In 15, a first locking portion 18a for immovably locking the first protruding portion 21 of the grommet 20 and a second protruding portion 21 in a state where the first protruding portion 21 is locked to the first locking portion 18a. A second locking portion 18b having a locking position 18c for locking the 22 is provided.
Therefore, normally, the headlamp 11 is stably mounted by locking the first protruding portion 21 and the second protruding portion 22 of the grommet 20 to the first locking portion 18a and the second locking portion 18b of the vehicle body 12, respectively. Can be maintained in a state.

Then, the first protruding portion 21 of the fixing portion 15 is breakable, the second locking portion 18b allows the second protruding portion 22 to move rearward, and the second protruding portion 22 is moved from the locking position 18c. It has a release position 18d that is guided in the detachment direction by moving to the rear Dr. Therefore, when a large impact force in the vehicle front-rear direction D is applied to the fixed portion between the vehicle body 12 and the headlamp 11, the first protrusion 21 is broken and the second protrusion 22 is locked at the locking position 18c. By moving to the release position 18d, the second protruding portion 22 is separated from the second locking portion 18b and the headlamp 11 can be largely moved, so that the impact force can be sufficiently absorbed.

On the other hand, when there is an input from an unintended direction, the second protruding portion 22 does not move to the rear Dr and is maintained at the locking position 18c, so that the first protruding portion 21 does not break and the locked state is maintained. Be maintained. Therefore, since the grommet 20 does not move significantly with respect to the fixed portion 15, the headlamp 11 can be kept in a fixed state, and displacement or damage can be prevented. Therefore, it is possible to prevent the headlamp 11 from being displaced or damaged due to a slight input from an unintended direction.

In the shock absorbing structure 10 of the headlamp 11 of the present embodiment, the fixed portion 17a is provided so as to project from the headlamp housing 11a to the rear Dr, and the supporting portion 25 abuts and supports the fixed portion 17a in the front-rear direction D. ing. Therefore, when an impact force in the front-rear direction D acts on the fixed portion between the vehicle body 12 and the headlamp 11, a sufficient force can be transmitted from the fixed portion 17a of the headlamp 11 to the grommet 20 to ensure the first protruding portion 21. The second protruding portion 22 can be separated from the second locking portion 18b.

The above embodiment can be appropriately modified within the scope of the present invention.
For example, in the above embodiment, of the plurality of fixed portions 17a to 17c provided on the headlamp 11, only the lower side on the vehicle center side is supported by the grommet 20, but the plurality of fixed portions 17a have been described. It is also possible to support a plurality or all of ~ 17c by grommets 20 fixed to fixing portions 15 of various shapes fixed to the vehicle body 12 in the same manner as described above.
Further, in the above embodiment, an example in which one first protruding portion 21 and one second protruding portion 22 are provided on the grommet 20 has been described, but one or both of them may be provided.
Further, the directions of the first protruding portion 21 and the second protruding portion 22 can be changed as appropriate. For example, in the above embodiment, the root portion 21a of the first protruding portion 21 is arranged in the front-rear direction D, but the root portion 21a is moved back and forth. It is also possible to arrange it in the vehicle width direction D that intersects the direction D.

D Front-rear direction W Vehicle width direction H Vertical direction Df Vehicle front Dr Vehicle rear vehicle width Wi Inside W Vehicle width outside 10 Shock absorption structure 11 Headlamp 11a Headlamp housing 11b Lens 12 Body 13 Bonnet 14 Bumper 15 Fixed part 15a Top surface 15b Locking protrusions 17a to 17c Fixed portion 17e Edge portion 17f Locking protrusion 18a First locking portion 18b Second locking portion 18c Locking position 18d Release position 18e Guide surface 19 Radiator support 20 Grommet 21 With first protruding portion 21a Root 21b Elastic piece 22 Second protrusion 22a Rib 23 Substrate 25 Support 25a Recess 25b Pressing frame 25c Pressing protrusion

Claims (3)

It has a headlamp shock absorption structure in which the fixed part of the headlamp is fixed to the fixed part of the vehicle body.
A grommet interposed between the fixed portion and the fixed portion is provided.
The grommet has a breakable projecting portion that projects to one side and is locked to the fixing portion, and a support portion that projects to the other side and supports the fixed portion. Construction. The grommet has a breakable first protrusion and a second protrusion provided so as to protrude in a direction intersecting the front-rear direction in the mounted state.
The fixing portion includes a first locking portion that locks the first protruding portion immovably, and a second locking portion that locks the second protruding portion and allows backward movement. And
The second locking portion includes a locking position for locking the second protruding portion in a state where the first protruding portion is locked to the first locking portion, and the second protruding portion is locked. The headlamp shock absorbing structure according to claim 1, further comprising a release position that is guided in a detaching direction by moving backward from the position. The fixed portion is provided so as to project rearward from the headlamp housing.
The headlamp shock absorbing structure according to claim 2, wherein the supporting portion abuts and supports the fixed portion in the front-rear direction.

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