JP2008080929A - Vehicle body front part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body front part structure capable of suppressing a head lamp from interfering with a sensor at an initial stage of collision even if the sensor is arranged in a rotation track of the head lamp. <P>SOLUTION: When the head lamp 30 is relatively rotated to a rear side around a support shaft 32 relative to the vehicle body at front surface collision, an inner end in a vehicle width direction of the head lamp 30 approaches to a side frame of a radiator support 14. In the rotation track of the inner end in the vehicle width direction of the head lamp 30, a satellite sensor 36 mounted to a sensor mounting part 34 of the side frame is arranged. However, in the vehicle body front part structure, before the inner end in the vehicle width direction of the head lamp 30 is interfered to the satellite sensor 36, a lamp stopper 38 provided on the head lamp 30 abuts on an interfering part 42 provided on a front end bonding part 22A of a front side member 22 and relative rotation to the vehicle body of the head lamp 30 is restricted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle body front structure.

2. Description of the Related Art Conventionally, a vehicle body front structure in which an airbag sensor that determines a threshold value for operating an airbag device is attached to a side frame of a radiator support of an automobile is known (see, for example, Patent Document 1).
JP 2006-213185 A

  By the way, in the headlight of an automobile, the vehicle width direction inner side end arranged on the vehicle body front side with respect to the vehicle width direction outer side end is set to the vehicle body with the vicinity of the vehicle width direction outer end near the rotation center at the time of frontal collision of the vehicle. In the configuration that is relatively rotated to the rear side, damage during low-speed collision can be suppressed. However, with such a headlamp, the inner end in the vehicle width direction is displaced toward the inner side in the vehicle width direction with the relative rotation to the rear side with respect to the vehicle body, and approaches the radiator support. For this reason, when an airbag sensor is attached to a radiator support in an automobile equipped with such a headlamp, the arrangement and dimensions of each member are set so that the headlamp does not interfere with the airbag sensor. This reduces the degree of design freedom.

  In view of the above facts, the present invention has an object to obtain a vehicle body front structure that can prevent the headlamp from interfering with the sensor in the early stage of the collision even if the sensor is arranged in the rotation trajectory of the headlamp. is there.

  The vehicle body front portion structure according to the first aspect of the present invention is provided at the vehicle body front portion, and the vehicle width direction inner end portion disposed on the vehicle body front side with respect to the vehicle width direction outer end portion is the vehicle width at the time of a frontal collision of the vehicle. A headlamp that is relatively rotated rearward with respect to the vehicle body around the outer end in the direction of the vehicle, and provided in the vehicle width direction inner side of the headlamp, at least a part of which is provided in the vehicle width direction of the headlamp A sensor disposed in the rotation locus of the inner end portion and a vehicle body front portion, and when the headlamp rotates relatively, the inner end portion in the vehicle width direction of the headlamp interferes with the sensor. An interference unit that interferes with a part of the headlamp before and restricts the relative rotation of the headlamp.

  In the vehicle body front part structure according to the first aspect, at the time of a frontal collision of the vehicle, the headlamp is relatively rotated rearward with respect to the vehicle body around the outer end in the vehicle width direction. A sensor is provided near the inside of the headlight in the vehicle width direction, and at least a part of the sensor is disposed in the rotation locus of the inner end of the headlight in the vehicle width direction. In the front structure, before the inner end of the headlight in the vehicle width direction interferes with the sensor, a part of the headlight interferes with the interference portion provided at the front of the vehicle body, and the relative rotation of the headlamp Is limited. Therefore, it is possible to prevent the headlamp from interfering with the sensor due to the relative rotation in the initial stage of the collision.

  According to a second aspect of the present invention, in the vehicle body front portion structure according to the first aspect, the sensor detects deceleration in the longitudinal direction of the vehicle body and is attached to a side frame of the radiator support. It is characterized by that.

  In the vehicle body front structure according to the second aspect, the sensor for detecting the deceleration in the longitudinal direction of the vehicle body is attached to the side frame of the radiator support that is easily buckled and deformed when the vehicle collides with the front. Therefore, the detection sensitivity of the deceleration by the sensor can be improved.

  A vehicle body front structure according to a third aspect of the present invention is the vehicle body front structure according to the first or second aspect, wherein a part of the headlamp that interferes with the interference portion is provided on the headlight. A limiting portion having higher rigidity than the main body portion of the lamp is provided.

  In the vehicle body front part structure according to claim 3, the headlamp has a restricting portion whose rigidity is higher than that of the main body, and the restricting portion interferes with the front of the vehicle body when the headlamp rotates relative to the vehicle body. Interfere with the part. Therefore, the relative rotation of the headlamp with respect to the vehicle body can be favorably limited.

  According to a fourth aspect of the present invention, the vehicle body front portion structure according to the third aspect is the vehicle body front portion structure according to the third aspect, wherein the headlamp has a fragile portion on the vehicle body front side of the restricting portion, and the fragile portion is The headlamp is deformed when a load of a predetermined value or more acts on the headlamp from the front side of the vehicle body in an interference state between the restricting portion and the interference portion.

  In the vehicle body front structure according to claim 4, when a load of a predetermined value or more acts on the headlamp from the front side of the vehicle body in a state where the headlamp restriction portion interferes with the vehicle body front interference portion, the restriction portion The weak part provided in the headlamp is deformed on the front side of the vehicle body. Thus, since the headlamp can be deformed at a predetermined portion (fragile portion), the deformation of the headlamp can be stabilized.

  According to a fifth aspect of the present invention, in the vehicle body front portion structure according to the third or fourth aspect, the restricting portion is provided at an inner end in the vehicle width direction of the headlamp. It is characterized by that.

  In the vehicle body front part structure according to claim 5, since the restricting portion is provided at the inner end portion in the vehicle width direction of the headlamp, the inside of the headlamp in the vehicle width direction is caused by the interference between the restricting portion and the interference portion. The relative rotation of the end with respect to the vehicle body can be directly restricted. Therefore, it is possible to better prevent the headlamp from interfering with the sensor at the beginning of the collision.

  A vehicle body front part structure according to a sixth aspect of the invention is characterized in that, in the vehicle body front part structure of the fifth aspect, the interference portion is provided at a front end portion of a front side member.

  In the vehicle body front structure according to the sixth aspect of the present invention, the interference portion is provided at the front end portion of the front side member having high rigidity. The rotation can be limited well.

  As described above, in the vehicle body front structure according to claim 1 of the present invention, even if the sensor is disposed in the rotation trajectory of the headlamp, the headlamp is prevented from interfering with the sensor in the early stage of the collision. it can.

  In the vehicle body front part structure according to claim 2 of the present invention, the detection sensitivity of the deceleration by the sensor can be improved.

  In the vehicle body front structure according to claim 3 of the present invention, the relative rotation of the headlamp with respect to the vehicle body can be satisfactorily limited.

  In the vehicle body front structure according to the fourth aspect of the present invention, the deformation of the headlamp can be stabilized.

  In the vehicle body front part structure according to claim 5 of the present invention, it is possible to more satisfactorily prevent the headlamp from interfering with the sensor in the early stage of the collision.

  In the vehicle body front portion structure according to claim 6 of the present invention, the relative rotation of the headlamp with respect to the vehicle body can be satisfactorily limited.

  A vehicle body front structure according to an embodiment of the present invention will be described with reference to FIGS. In the figure, the arrow FR indicates the vehicle body front direction, the arrow UP indicates the vehicle body upward direction, and the arrow IN indicates the vehicle width inside direction.

  As shown in FIG. 1 to FIG. 3, a radiator support 14 to which a radiator (not shown) is attached is provided at the vehicle body front portion of the automobile 12 configured by applying the vehicle body front structure according to the embodiment of the present invention. ing. As shown in FIG. 4, the radiator support 14 includes a front cross member upper 16 and a front cross member lower 18 that are arranged vertically in parallel along the vehicle width direction, and both ends in the vehicle width direction of the radiator support 14 in the vertical direction. It has a pair of left and right side frames 20 to be connected, and is formed in a frame shape.

  A front end portion of the front side member 22 is coupled to an outer end portion of each side frame 20 in the vehicle width direction. Further, at the front end of each front side member 22, a coupling portion 22A to which a front bumper reinforcement 24 is coupled is provided.

  As shown in FIGS. 1 to 3, a radiator support upper side 28 is provided between the front cross member upper 16 and the front fender 26 of the radiator support 14, and the radiator support upper side 28 on the vehicle body lower side. A headlamp 30 is disposed as a headlamp. The headlamp 30 includes a lamp housing 31 as a main body and a lamp outer lens 33 attached to the front side of the lamp housing 31 on the vehicle body.

  The headlamp 30 is formed in an elongated shape along the vehicle width direction, and as shown in FIG. 2, the inner end portion in the vehicle width direction is disposed on the front side of the vehicle body from the outer end portion in the vehicle width direction. (That is, the headlamp 30 has the inner end in the vehicle width direction as the foremost part). Further, as shown in FIG. 5, a rotation shaft 32 is provided on the outer side in the vehicle width direction of the headlamp 30, and the rotation shaft 32 is rotatably supported by the front fender 26.

  Therefore, in this automobile 12, when a collision object collides with the headlamp 30 at the time of a frontal collision and an impact load of a predetermined value or more directed to the rear side of the vehicle body acts on the headlamp 30, the headlamp 30 is moved outward in the vehicle width direction. With the rotation shaft 32 at the end as the rotation center (refer to the rotation axis A in FIGS. 1, 3 and 5), the rotation is relatively rearward with respect to the vehicle body. Thereby, damage to the headlamp 30 at the time of a frontal collision at a low speed of the automobile 12 is suppressed.

  In addition, as described above, the headlamp 30 has the inner end in the vehicle width direction disposed closer to the front of the vehicle body than the outer end in the vehicle width direction (rotary shaft 32). As a result of relative rotation to the rear side with respect to the vehicle body, the inner end portion in the vehicle width direction of the headlamp 30 approaches the side frame 20 of the radiator support 14 while being displaced inward in the vehicle width direction (inclined rearward with respect to the vehicle body). Rotate).

  The side frame 20 on the right side of the vehicle body of the radiator support 14 is provided with a plate-shaped sensor mounting portion 34 that protrudes toward the front of the vehicle body. The sensor mounting portion 34 is arranged so that the plate thickness direction is along the vehicle width direction, and the sensor mounting portion 34 is provided on the outer surface in the vehicle width direction of the vehicle mounting direction in order to operate an airbag device (not shown). A satellite sensor 36 is attached as an airbag sensor (collision detection sensor) that detects deceleration.

  The satellite sensor 36 is disposed in the vicinity of the inner side in the vehicle width direction of the headlamp 30 and is disposed in a rotation locus around the rotation shaft 32 at the inner end in the vehicle width direction of the headlamp 30. For this reason, when the headlamp 30 rotates relative to the vehicle body about the rotation axis 32 to the rear side, the inner end of the headlamp 30 in the vehicle width direction approaches the satellite sensor 36.

  Here, in the present embodiment, as shown in FIGS. 5 and 6, a lamp stopper 38 as a limiting portion is provided at the inner end portion in the vehicle width direction of the lamp housing 31 of the headlamp 30. The lamp stopper 38 is formed in a rectangular tube shape whose axial direction is along the longitudinal direction of the vehicle body, and protrudes toward the rear side of the vehicle body. A rib 40 is provided inside the lamp stopper 38, and the lamp stopper 38 is formed to have higher rigidity than the other parts of the lamp housing 31 of the headlamp 30 (particularly along the longitudinal direction of the vehicle body). It is difficult to deform with respect to load).

  Further, an interference portion 42 provided at the upper end portion of the coupling portion 22A of the front side member 22 is disposed opposite and close to the rear side of the lamp stopper 38 in the vehicle body. The interference unit 42 is disposed in the rotation locus of the lamp stopper 38 when the headlamp 30 is relatively rotated around the rotation axis 32 with respect to the vehicle body, and the lamp stopper 38 is caused by the relative rotation of the headlamp 30. The front end portion (the rear end portion of the vehicle body) and the interference portion 42 interfere (abut). As described above, in the state where the lamp stopper 38 and the interference portion 42 are in contact with each other, the relative rotation of the headlamp 30 is limited. Moreover, in this contact state, a predetermined gap is secured between the inner end of the headlamp 30 in the vehicle width direction and the satellite sensor 36 described above.

  Therefore, in the present embodiment, as shown in FIG. 7, a collision object 44 collides with the headlamp 30 from the front side of the vehicle body and an impact load acts on the headlamp 30 (see arrow F in FIG. 7). 7 is rotated relative to the vehicle body from the normal position shown in FIG. 7 to the rear side around the rotation axis 32 (see arrow T in FIG. 8), the vehicle width of the headlamp 30 is shown in FIG. Before the inner end of the direction interferes with the satellite sensor 36, the lamp stopper 38 of the headlamp 30 contacts the interference portion 42 of the front side member 22, and the relative rotation of the headlamp 30 to the rear side with respect to the vehicle body is restricted. The

  Further, in the present embodiment, a fragile portion 46 is provided at a vehicle body front portion of the lamp stopper 38 at the inner end in the vehicle width direction of the headlamp 30. The fragile portion 46 is easily deformed by a load along the longitudinal direction of the vehicle body. For this reason, as shown in FIG. 8, the lamp stopper 38 comes into contact with the interference portion 42, and the headlamp 30 further collides with the headlamp 30 in a state where the relative rotation of the headlamp 30 with respect to the vehicle body is restricted. When a load greater than a predetermined value directed from the object 44 toward the rear of the vehicle body is applied (see arrow G in FIG. 9), the fragile portion 46 is deformed as shown in FIG.

  In addition, when the weak part 46 deform | transforms, the other site | part of the headlamp 30 also deform | transforms from the weak part 46 as a starting point. For this reason, when the fragile portion 46 is deformed, the inner end portion in the vehicle width direction of the headlamp 30 is attached to the vehicle body with the point B in front of the vehicle body as the rotation center as shown in FIG. On the other hand, it is relatively rotated (displaced) rearward along substantially the front-rear direction. Further, at the time of a collision that deforms not only the fragile portion 46 but also the lamp stopper 38, the headlamp 30 interferes with the satellite sensor 36. In this case, the satellite sensor 36 before the headlamp 30 interferes with the satellite sensor 36. 36 outputs a predetermined electrical signal to an air bag device (not shown), and the air bag is developed.

  Next, the operation of this embodiment will be described.

  In the automobile 12 configured as described above, when the headlamp 30 is rotated relative to the rear of the vehicle body around the rotation shaft 32 at the time of a frontal collision, the inner end in the vehicle width direction of the headlamp 30 is the side frame 20 of the radiator support 14. To approach. An air bag satellite sensor 36 attached to the sensor attachment portion 34 of the side frame 20 is disposed in the rotation locus of the inner end portion of the headlamp 30 in the vehicle width direction. Before the inner end of the lamp 30 in the vehicle width direction interferes with the satellite sensor 36, the lamp stopper 38 provided on the headlamp 30 interferes with the interference portion 42 provided on the front end coupling portion 22A of the front side member 22 ( The relative rotation of the headlamp 30 with respect to the vehicle body is limited. Therefore, it is possible to prevent the headlamp 30 from interfering with the sensor at the initial stage of the collision by the relative rotation as described above, and to stabilize the movement of the headlamp 30 at the time of the collision.

  In this embodiment, when the lamp stopper 38 and the interference part 42 are omitted, that is, when a part of the headlamp 30 and the interference part 42 do not interfere with each other, the rotation axis of the headlamp 30 as described above. By rotation around 32, the inner end of the headlamp 30 in the vehicle width direction interferes (contacts) with the outer portion of the satellite sensor 36 in the vehicle width direction. In this case, since the satellite sensor 36 is pressed inward in the vehicle width direction by the headlamp 30, the satellite sensor 36 lies sideways with respect to the vehicle body due to deformation of the sensor mounting portion 34 inward in the vehicle width direction. Although there is a possibility, in the present embodiment, the rotation of the headlamp 30 is limited by the interference between the lamp stopper 38 and the interference portion 42 as described above, and thus the satellite sensor 36 is prevented from being overturned as described above. be able to.

  Moreover, in this embodiment, the satellite sensor 36 that detects the deceleration in the longitudinal direction of the vehicle body is attached to the side frame 20 of the radiator support 14 that is easily buckled and deformed by a frontal collision of the vehicle. Therefore, the detection sensitivity of the deceleration by the satellite sensor 36 can be improved.

  Further, in the present embodiment, the lamp housing 31 of the headlamp 30 has a highly rigid restricting portion 38, and this restricting portion 38 is the interference portion 42 of the front side member 22 when the headlamp 30 rotates relative to the vehicle body. Interfering with (front end). Therefore, the relative rotation of the headlamp 30 with respect to the vehicle body can be favorably limited.

  Furthermore, in the present embodiment, the weak portion 46 is provided at the vehicle body front portion of the lamp stopper 38 at the inner end in the vehicle width direction of the headlamp 30, and the lamp stopper 38 and the interference portion 42 interfere with each other. When a load of a predetermined value or more is applied to the headlamp 30 from the front side of the vehicle body, the fragile portion 46 is deformed. Thus, since the headlamp 30 is deformed starting from a predetermined portion (fragile portion 46), the deformation of the headlamp 30 can be stabilized.

  In this embodiment, the lamp stopper 38 is provided at the inner end of the headlamp 30 in the vehicle width direction. Therefore, the relative rotation of the head lamp 30 with respect to the vehicle body at the inner end in the vehicle width direction can be directly restricted by the interference between the lamp stopper 38 and the interference portion 42. Therefore, it is possible to better prevent the inner end of the headlamp 30 in the vehicle width direction from interfering with the satellite sensor 36 at the beginning of the collision.

  Furthermore, in this embodiment, the interference part 42 is provided in the front-end part of the front side member 22 with high rigidity. Therefore, the relative rotation of the headlamp 30 with respect to the vehicle body can be favorably limited by the interference between the interference portion 42 and the lamp stopper 38.

  As described above, in the present embodiment, the weight of the automobile 12 is simple because the headlamp 30 is simply configured to change the shape of the headlamp 30 without newly adding parts to the headlamp 30 or the front of the vehicle body. As described above, the above-described excellent effects can be achieved at a light weight and low cost without unnecessarily increasing.

  In the above embodiment, the satellite sensor 36 is attached to the side frame 20 of the radiator support 14. However, the present invention is not limited to this, and the satellite sensor 36 is disposed at the front of the vehicle body at the side frame 20 of the radiator support 14. It is good also as a structure attached other than.

  In the above embodiment, the lamp stopper 38 having higher rigidity than the lamp housing 31 itself is provided in a part of the lamp housing 31 of the headlamp 30, and the lamp stopper 38 interferes with the interference portion 42. The present invention is not limited to this, and the lamp stopper 38 may be omitted, and a part of the lamp housing 31 may directly interfere with the interference portion 42.

  Furthermore, in the said embodiment, although the headlamp 30 was set as the structure provided with the weak part 46, this invention is not restricted to this, It is good also as a structure from which the weak part 46 was abbreviate | omitted.

  Further, in the above embodiment, the lamp stopper 38 as the limiting portion is provided at the inner end in the vehicle width direction of the headlamp 30, and the interference portion 42 is provided at the front end of the front side member 22. The invention is not limited to this, and the limiting portion may be provided in the vehicle width direction intermediate portion of the headlamp 30 and the interference portion may be provided in the front portion of the vehicle body corresponding to the limiting portion.

1 is a schematic perspective view showing a partial configuration of a vehicle body front portion of an automobile configured by applying a vehicle body front structure according to an embodiment of the present invention. FIG. 2 is a schematic plan view showing a partial configuration of a vehicle body front portion of the automobile shown in FIG. 1. It is a schematic front view which shows the partial structure of the vehicle body front part of the motor vehicle shown by FIG. It is a disassembled perspective view which shows the partial structure of the vehicle body front part of the motor vehicle shown by FIG. It is a perspective view which shows the structure of the headlamp of the motor vehicle shown by FIG. 1 in the state seen from the back side. FIG. 6 is a perspective view showing a partial configuration of the headlamp shown in FIG. 5. It is a top view which shows the state by which the headlamp of the motor vehicle shown by FIG. 1 was arrange | positioned in the predetermined attachment position. It is a top view which shows the state which the lamp | ramp stopper of the headlamp shown by FIG. 1 contact | abutted to the interference part of the front side member front-end part. It is a top view which shows the state which the weak part of the headlamp shown by FIG. 1 deform | transformed.

Explanation of symbols

12 automobile 14 radiator support 20 side frame 22 front side member 30 headlamp (headlight)
31 Lamp housing (main part)
32 Rotation axis (Rotation center)
36 Satellite sensor 38 Lamp stopper (restricted part)
42 Interference part 46 Vulnerable part

Claims (6)

The vehicle width direction inner side end that is provided at the front of the vehicle body and is located on the vehicle front side of the vehicle width direction outer side end is rearward with respect to the vehicle body with the vicinity of the vehicle width direction outer end as a rotation center at the time of frontal collision of the vehicle A headlight that is relatively rotated,
A sensor provided in the vehicle width direction inner side vicinity of the headlamp, and at least a part thereof is disposed in a rotation locus of the vehicle width direction inner end portion of the headlamp;
Provided at the front of the vehicle body, and when the headlamp rotates relative to each other, the inner end of the headlamp in the vehicle width direction interferes with a part of the headlamp before interfering with the sensor. An interference unit for limiting the relative rotation of the headlamp;
A vehicle body front structure.   The vehicle body front structure according to claim 1, wherein the sensor detects a deceleration in a longitudinal direction of the vehicle body and is attached to a side frame of a radiator support.   The front part of the vehicle body according to claim 1 or 2, wherein a part of the headlight that interferes with the interference part is provided with a restricting part having higher rigidity than a main body part of the headlight. Part structure.   The headlamp has a fragile portion at a front part of the vehicle body of the restriction portion, and the fragile portion is a load of a predetermined value or more from the vehicle body front side to the headlamp in an interference state between the restriction portion and the interference portion. The vehicle body front part structure according to claim 3, wherein the vehicle body front part structure is deformed when operated.   The vehicle body front part structure according to claim 3 or 4, wherein the restriction portion is provided at an inner end portion of the headlamp in the vehicle width direction.   The vehicle body front part structure according to claim 5, wherein the interference part is provided at a front end part of a front side member.

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