JP6804151B2 - Upper cross member mounting structure - Google Patents

Description

The present invention relates to an upper cross member mounting structure, and more particularly to a structure capable of reliably protecting a pedestrian with a simple configuration.

The structure of the front part of the vehicle body S that protects the pedestrian in the event of a conventional pedestrian collision will be described with reference to FIG. The structure of the front part of the vehicle body S includes a front bumper 16 in which the bumper information 18 is covered with a bumper cover 22. The movable member 32 arranged so as not to protrude below the lower end of the bumper cover 22 usually positions the load support portion 38 behind the intermediate portion 22A of the bumper cover 22, which is a portion where the load support portion 38 initially collides. Due to the collision of the pedestrian P with the 22, the load supporting portion 38 rotates around the hinge portion 32A and moves forward relative to the intermediate portion 22A, and the load supporting portion 38 lowers the bumper information 18. By supporting a part of the collision load, the area to receive the load is increased in the vertical direction. As a result, it is possible to obtain a structure of the entire vehicle body capable of alleviating the load acting on the knee joint of the pedestrian at the time of collision with the pedestrian and ensuring a sufficient approach angle (see Patent Document 1 above).

Japanese Unexamined Patent Publication No. 2004-268826

The structure of the front part of the vehicle body S described above has the following points to be improved. In the structure of the front part of the vehicle body S, it is necessary to provide a movable member having a hinge structure in the bumper reinforcement, and there is a point to be improved that the configuration is complicated, the number of parts is large, and the cost is high.

Therefore, it is conceivable to dispose a lower absorber for protecting pedestrians in the event of a collision at a predetermined position in the lower part of the vehicle body. In this structure, in the area where the lower absorber is not installed, especially in the area outside the vehicle from the lower absorbers at both ends, the bumper and the like function as cantilever beams, so that the lower leg cannot be supported and the lower leg is behind the vehicle. It is necessary to have a pedestrian protection structure that does not cause excessive bending of the lower leg by swinging toward.

Therefore, an object of the present invention is to provide an upper cross member mounting structure capable of reliably protecting a pedestrian with a simple configuration.

The means for solving the problems in the present invention and the effects of the invention are shown below.

The upper cross member mounting structure according to the present invention includes a side member, a fender apron having a flange surface along the left-right direction of the vehicle at an edge on the front side of the vehicle facing the outside of the vehicle from above the side member, and the fender apron. In an automobile having an upper cross member connected to a flange surface, the upper cross member mounting device is an upper cross member mounting structure in which an upper cross member mounting device is arranged between the upper cross member and the fender apron, and the upper cross member mounting device is In the projection region of the flange surface of the fender apron to the front of the vehicle along the lower edge of the vehicle, at least the upper cross member mounting surface in contact with the upper cross member. At the lower support surface formed toward the rear of the vehicle from the lower edge of the cross member mounting surface to the flange surface of the fender apron, and the upper edge of the upper cross member mounting surface on the vehicle. In the projection area to the front of the vehicle that does not overlap the flange surface of the fender apron, from the upper edge of the upper cross member mounting surface to the flange of the fender apron to the rear of the vehicle. It has an upper support surface formed toward, which is formed only on the outer side of the vehicle with respect to the edge of the fender apron.

As a result, in the vicinity of the upper cross member above the vehicle with respect to the side member, the upper cross member is supported by the lower support surface and the flange surface of the fender apron. Therefore, it is possible to reduce the deformation when the force F is applied to the rear side of the vehicle. That is, since the upper cross member is supported by the upper cross member attachment device, as a result, the lower leg of the colliding pedestrian swings toward the rear of the vehicle due to the upper cross member, and the lower leg is excessively bent. Can be prevented.

Further, in the vicinity of the upper cross member on the outside of the vehicle with respect to the side member, the upper cross member is supported by a lower support surface that is not supported in the air. Therefore, the deformation when the force F is applied to the rear side of the vehicle cannot be reduced, and the deformation is large. That is, the upper cross member and the upper cross member attachment device can absorb the force, and as a result, the lower leg of the colliding pedestrian swings toward the rear of the vehicle, reducing the amount of bending that occurs in the lower leg. be able to.

It is a figure which shows the automobile C which installs the upper cross member mounting structure 200 which is one Example of the upper cross member mounting structure which concerns on this invention. It is a figure which shows the upper cross member attachment device 100, A is a front view, B is a bottom view, and C is a plan view. It is a figure which shows the cross section of the upper cross member attachment device 100, A is the XX cross section of FIG. 2, B is the YY cross section of FIG. 2, and C is the force F applied in the XX cross section of FIG. D is a diagram showing a state in which a force F is applied in the YY cross section of FIG. 2, respectively. It is a figure which shows the vehicle body front structure of the conventional vehicle.

Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

The upper cross member mounting structure 200, which is an embodiment of the upper cross member mounting structure according to the present invention, will be described with reference to the drawings.

1. 1. Structure of automobile C The structure of automobile C in which the upper cross member mounting structure 200 is arranged will be described with reference to FIG. FIG. 1 shows a state in which the inside of the hood FD of the automobile C from which the front fender, the front wheels, the drive structure of the front wheels, etc. are removed is viewed from the front. The automobile C has a side member SM, a fender apron FE, and an upper cross member UCM. In addition, the automobile C has a radiator RG, a lower cross member LCM, a lower absorber LAB, a reinforcement RF for offset collision countermeasures, and the like in the hood. The Reinforce RF is arranged only in front of the driver's seat side.

The side member SM is arranged below the vehicle along the front-rear direction of the vehicle. One side member SM is formed on each of the left and right sides of the vehicle. The fender apron FE is a member that separates the tire house from the space inside the hood FD. The fender apron FE has a flange surface FE3 having a normal line along the vehicle front direction at the end edge FE1 on the vehicle front side toward the outside of the vehicle from above the side member SM (see FIG. 2A). The edge FE1 of the fender apron FE has an arc shape from the lower side of the vehicle to the upper side and the outer side of the vehicle when viewed from the front of the vehicle.

The upper cross member UCM is connected to the fender apron FE. The upper cross member UCM is arranged so as to suspend the fender apron FE located on the left and right.

The upper cross member mounting device 100 is arranged between the upper cross member UCM and the fender apron FE. That is, the upper cross member attachment device 100 is a connecting member that connects the upper cross member UCM and the fender apron FE via itself. The upper cross member attachment device 100 is arranged only in front of the passenger seat side on which the reinforcement RF is not arranged. In this way, the upper cross member attachment device 100 is not arranged on the driver's seat side where the reinforcement RF is arranged, and the upper cross member attachment device 100 is arranged only on the passenger seat side where the reinforcement RF is not arranged. , The upper cross member mounting structure can be made according to the function.

2. 2. Upper cross member mounting structure 200
The upper cross member mounting structure 200 is formed at an end portion of the upper cross member UCM on the passenger seat side. The upper cross member mounting structure 200 is formed by arranging the upper cross member mounting device 100 between the upper cross member UCM and the fender apron FE.

3. 3. Upper cross member mounting device 100
The structure of the upper cross member mounting device 100 will be described with reference to FIG. 2A shows a front view of the upper cross member mounting device 100, FIG. 2B shows the same bottom view, and FIG. 2C shows the same plan view. The upper cross member mounting device 100 has an upper cross member mounting surface 101 (see FIG. 2A), a lower support surface 103 (see FIG. 2B), and an upper support surface 105 (see FIG. 2C).

The upper cross member mounting device 100 has a U-shape formed by the lower support surface 103 and the upper support surface 105 around the upper cross member mounting surface 101. The lower support surface 103 and the upper support surface 105 have fixing flanges F103 and F105 for fixing themselves to the flange surface FE3 of the fender apron FE at the edge different from the upper cross member mounting surface 101. Each is formed.

The upper cross member mounting surface 101 is in contact with the upper cross member UCM. As shown in FIG. 2B, the lower support surface 103 is at least in the projection region S103 of the flange surface FE3 of the fender apron FE toward the vehicle front along the lower edge L101 of the vehicle on the upper cross member mounting surface 101. It is formed from the lower edge L101 of the upper cross member mounting surface 101 to the flange surface FE3 of the fender apron FE toward the rear of the vehicle.

The upper support surface 105 is the upper end of the upper cross member mounting surface 101 on the upper side of the vehicle in the projection region S105 of the fender apron FE on the front of the vehicle other than the flange end surface FE3 of the fender apron FE. It is formed from the edge U101 to the flange surface FE3 of the fender apron FE toward the rear of the vehicle. That is, the upper support surface 105 is formed only on the outer side of the vehicle with respect to the end edge FE1 of the fender apron FE at the upper edge U101 of the upper cross member mounting surface 101 on the vehicle side.

The XX cross section shown in FIG. 2 is shown in FIG. 3A, and the YY cross section is shown in FIG. 3B. The XX cross section shown in FIG. 2 corresponds to the cross section along the axis L1 in FIG. 1, and the YY cross section corresponds to the cross section along the axis L3 in FIG. Here, the axis L1 indicates a line substantially above the side member SM, and the axis L3 indicates a line along the upper side of the position from the side member SM to the outside of the vehicle.

As shown in FIG. 3A, in the vicinity of the upper cross member UCM on the axis L1, there is a lower support surface 103 supported by the flange surface FE3 of the fender apron FE on the vehicle rear side of the upper cross member UCM. That is, the upper cross member UCM is supported by the lower support surface 103 and the flange surface FE3 of the fender apron FE. Therefore, as shown in FIG. 3C, it is possible to reduce the deformation when the force F is applied to the rear side of the vehicle. That is, even if a force F is applied to the rear side of the vehicle near the upper cross member UCM on the axis L3, the upper cross member UCM is supported by the upper cross member mounting device 100, and as a result, the upper cross member mounting structure 200 , The upper cross member UCM, and the lower absorber LAB (see FIG. 1) can prevent the lower leg of the colliding pedestrian from being swung toward the rear of the vehicle.

On the other hand, as shown in FIG. 3B, in the vicinity of the upper cross member UCM on the axis L3, there is a lower support surface 103 that cannot be supported by anything on the rear side of the vehicle. That is, the upper cross member UCM is supported by the lower support surface 103 that is not supported in the air. Therefore, as shown in FIG. 3D, the deformation when the force F is applied to the rear side of the vehicle cannot be reduced, and the deformation is large. That is, even if a force F is applied to the rear side of the vehicle near the upper cross member UCM on the axis L3, the force can be absorbed by the upper cross member UCM and the upper cross member mounting device 100, and as a result, the upper cross member In the mounting structure 200, the lower leg of the colliding pedestrian swings toward the rear of the vehicle, and the amount of bending that occurs in the lower leg can be reduced.

[Other Embodiments]
(1) Position where the upper cross member mounting device 100 is arranged: In the above-described first embodiment, the upper cross member mounting device 100 is arranged only on the passenger seat side where the reinforcement RF is not arranged, but the reinforcement RF is arranged. It may be arranged on the driver's seat side.

The upper cross member mounting structure according to the present invention is, for example, a fender apron having a flange surface along the left-right direction of the vehicle on an end surface on the front side of the vehicle from above the side member and the side member toward the outside of the vehicle, and a flange surface of the fender apron. It can be used for automobiles having an upper cross member connected to.

200 Upper cross member mounting device 100 Upper cross member mounting device 101 Upper cross member mounting surface L101 Edge edge U101 Edge edge 103 Lower support surface S103 Projection area 105 Upper support surface S105 Projection area F103 Fixed flange F105 Fixed flange C Automobile SM side member FE Fender Apron FE1 Edge Edge FE3 Flange Surface UCM Upper Cross Member RG Radiator LCM Lower Cross Member LAB Lower Absorber

Claims (1)

A side member, a fender apron having a flange surface along the left-right direction of the vehicle, and an upper cross member connected to the flange surface of the fender apron are provided at an end edge on the front side of the vehicle from above the side member toward the outside of the vehicle. In an automobile, it is an upper cross member mounting structure in which an upper cross member mounting device is arranged between the upper cross member and the fender apron.
The upper cross member mounting device is
The upper cross member mounting surface in contact with the upper cross member,
At least in the projected region of the flange surface of the fender apron toward the front of the vehicle along the lower edge of the vehicle on the upper cross member mounting surface, from the lower edge of the vehicle on the upper cross member mounting surface. , The lower support surface formed toward the rear of the vehicle up to the flange surface of the fender apron,
At the upper edge of the upper cross member mounting surface on the vehicle side, in the projection region on the front of the vehicle that does not overlap with the flange surface of the fender apron, on the upper side of the vehicle on the upper cross member mounting surface. An upper support surface formed from the edge to the flange of the fender apron toward the rear of the vehicle, which is formed only on the outside of the vehicle with respect to the edge of the fender apron.
Upper cross member mounting structure with.

Images