JP5228781B2 - Body front structure - Google Patents

Description

  The present invention relates to a vehicle body front structure.

Front structure of the vehicle body in which mounted parts (heavy objects) such as headlamps are attached to the support upper side (upper side member) that protrudes outward from the support side (vertical column) in the vehicle width direction from the support upper of the radiator support Is conventionally known (see, for example, Patent Document 1).
JP 2005-219657 A

  However, with such a configuration, the vehicle body vertical direction and vehicle body front-rear direction loads excited by the vehicle-mounted components (heavy objects) due to the vehicle body vertical acceleration and vehicle body longitudinal acceleration generated during the traveling of the vehicle. However, since it is input (loaded) to the support upper side, a reinforcing structure for bending moments in the vehicle vertical direction and the vehicle longitudinal direction with the support side as a fulcrum acting on the support upper side is required.

  Therefore, in view of the above circumstances, an object of the present invention is to obtain a vehicle body front part structure that can reduce a bending moment acting on an upper side member in a radiator support.

In order to achieve the above object, the vehicle body front structure according to claim 1 of the present invention projects from the upper portion of the radiator support to the outside in the vehicle width direction from the side portion, and supports vehicle-mounted components. and the upper side members, the site located on the vehicle body lower side big one vehicle body rear side of the vehicle width direction outer end portion of the upper side member of the side member, upper attachment provided at predetermined intervals in the vertical direction of the vehicle body And a lower mounting portion, a vehicle width direction outer end portion of the upper side member, and the upper mounting portion and the lower mounting portion are joined in a truss shape that is triangular when viewed from the side in the vehicle width direction. And a coupling member.

According to the invention described in claim 1, the vehicle widthwise outer end portion of the upper side member of the radiator support body downward big one vehicle body rear side of the vehicle width direction outer end portion of the upper side members in the side members The upper mounting portion and the lower mounting portion provided at a predetermined interval in the vertical direction of the vehicle body are coupled to the portion located in the vehicle in a truss shape that is triangular in a side view as viewed from the vehicle width direction by the coupling member. .

  Therefore, the upper side member can be supported (reinforced) by the side member (vehicle body skeleton member), and the vehicle-mounted component (heavy object) is generated by the acceleration in the vertical direction of the vehicle body and the acceleration in the longitudinal direction of the vehicle body that occurs during the traveling of the vehicle. Even if loads in the vehicle vertical direction and vehicle longitudinal direction that are excited by the above are input to the upper side member, the load can be distributed to the upper and lower portions of the side member. That is, this makes it possible to reduce the bending moment that acts on the upper side member.

  The vehicle body front part structure according to claim 2 is the vehicle body front part structure according to claim 1, wherein the coupling member couples the outer side end of the upper side member and the upper mounting part. And a lower coupling member that couples the outer side end portion of the upper side member and the lower attachment portion to each other.

  According to the invention described in claim 2, the coupling member includes an upper coupling member that couples the vehicle width direction outer end portion of the upper side member and the upper mounting portion, and the vehicle width direction outer end portion and the lower portion of the upper side member. Since it is comprised by the lower side coupling member which couple | bonds a side attachment part, a truss structure can be comprised by the upper side coupling member, the lower side coupling member, and a side member. Therefore, the upper side member can be favorably supported (reinforced) by the side member (vehicle body skeleton member). That is, the load can be favorably distributed on the upper and lower portions of the side member.

  The vehicle body front structure according to claim 3 is the vehicle body front structure according to claim 2, wherein the upper coupling member and the lower coupling member are connected to an outer end portion in the vehicle width direction of the upper side member. The upper mounting portion and the lower mounting portion are coupled to each other via a block member.

  According to the third aspect of the present invention, the assembling property of the coupling member to the outer end in the vehicle width direction of the upper side member and the upper mounting portion and the lower mounting portion of the side member is improved, and the truss structure having the coupling rigidity It can be.

  As described above, according to the present invention, it is possible to provide a vehicle body front part structure that can reduce the bending moment acting on the upper side member in the radiator support.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode for carrying out the present invention will be described below in detail based on the embodiments shown in the drawings. FIG. 1 is a schematic perspective view showing the configuration of the vehicle body front structure 10, and FIGS. 2 and 3 are partially enlarged schematic perspective views showing the configuration of the vehicle body front structure 10. FIG. 4 is a schematic plan view showing the configuration of the vehicle body front structure 10, and FIG. 5 is a schematic side view showing the configuration of the vehicle body front structure 10.

  In the figure, the arrow FR indicates the forward direction in the vehicle longitudinal direction, the arrow UP indicates the upward direction in the vehicle vertical direction, the arrow RI indicates the right direction (outward in the vehicle width direction) when facing the arrow FR direction, and the arrow LE indicates The left direction (outside in the vehicle width direction) when facing the arrow FR direction is shown.

  As shown in FIGS. 1 to 5, the vehicle body front structure 10 includes a pair of left and right front side members 12 (vehicle body skeleton members) whose longitudinal direction is the longitudinal direction of the vehicle. Each front side member 12 has a rear end portion 12 </ b> B connected to a dash panel 16 that separates the engine compartment E and the vehicle compartment C via an impact absorbing material 14. Each front side member 12 has a front end portion 12A connected to a bumper reinforcement (not shown) extending in the vehicle width direction via a crash box 18 as an impact absorbing member.

  The vehicle body front structure 10 includes a radiator support (capacitor support) 20 supported by a pair of left and right crash boxes 18 and the like. The radiator support 20 includes a support upper 22 (upper portion) and a support lower 24 that are arranged in parallel so as to be substantially opposed to each other in the vehicle body vertical direction and extend in the vehicle width direction.

  The radiator support 20 includes a pair of left and right support sides 26 (side portions / vertical columns) that connect both ends of the support upper 22 and the support lower 24 in the vehicle width direction, and the support upper 22 and the support lower 24. And a support center 28 for connecting the vehicle width direction center portion in the vehicle body vertical direction.

  Therefore, the radiator support 20 is formed as a substantially rectangular frame when viewed from the front. In the present embodiment, the radiator support 20 is a substantially rectangular frame whose longitudinal direction is the vehicle width direction. The inner side of the support side 26 in the vehicle width direction is fixed to the outer side of the crash box 18 in the vehicle width direction by fastening means such as bolts and nuts, whereby the radiator support 20 is fixed to the front side member 12 (vehicle body frame member). It has come to be supported.

  Further, between the support upper 22 and the support lower 24 and between each support side 26 and the support center 28, a radiator 50, a condenser (condenser for air conditioning) and the like as vehicle-mounted components are fixedly arranged. It is like that.

  Support upper sides 30 (upper side members) are extended at both outer ends of the support upper 22 in the vehicle width direction, respectively, on the outer side in the vehicle width direction and obliquely toward the rear side of the vehicle body. The support lower side 32 is extended outwardly in the vehicle width direction at both outer ends of the support lower 24 in the vehicle width direction.

  And between this support upper side 30 and the support lower side 32, the oil cooler 52 as a vehicle mounting component (heavy article) is arrange | positioned. Further, a headlamp 54 (shown by an imaginary line in FIG. 1) as a vehicle-mounted component (auxiliary component / heavy object) is disposed above the support upper side 30 in the vehicle body. Is supported by the support upper side 30.

  Each front side member 12, shock absorber 14 and radiator support 20 (support upper 22, support lower 24, pair of left and right support sides 26, support center 28, support upper side 30, support lower side 32) are made of aluminum or It is made of a metal material such as an aluminum alloy.

  Further, apron upper members 34 are respectively provided on the vehicle body upper side of the left and right front side members 12. The left and right apron upper members 34 extend substantially along the longitudinal direction of the vehicle body, the rear end 34B is coupled to the dash panel 16, and the front end 34A is coupled to the support upper 22.

  Further, as shown in a side view in the vehicle width direction on the front side member 12 on the rear side of the vehicle body relative to the radiator support 20, that is, as shown in a side view of FIG. On the outer surface of the front end member 12A of the front side member 12 on the side and rear side of the vehicle body, an upper mounting portion 36 and a lower mounting portion that are spaced apart by a predetermined distance in the vertical direction of the vehicle body (preferably separated as much as possible). 38 is provided.

  As shown in FIGS. 5 and 7, the upper attachment portion 36 and the lower attachment portion 38 are flat solid blocks that protrude from the upper and lower ends of the outer surface of the front end portion 12 </ b> A of the front side member 12. Each of the solid block members 37 and 39 is penetrated so that each of the rear end portions 42B and 44B of the upper coupling member 42 and the lower coupling member 44 described later can be bolted. A hole (not shown) is formed.

  Further, as shown in FIG. 6, a solid block member 40 that is flat and bifurcated is also provided on the lower surface of the outer end of the support upper side 30 in the vehicle width direction. The bifurcated tip portions 40A, 40B of the block member 40 have through holes (not shown) so that the front end portions 42A, 44A of the upper coupling member 42 and the lower coupling member 44 described later can be bolted respectively. Is formed. In addition, each solid block member 37, 39, 40 is comprised with metal materials, such as aluminum or aluminum alloy, and the weight reduction is achieved.

  The upper coupling member 42 and the lower coupling member 44 allow the solid block members 37, 39, and 40 to be fitted into the front end portions 42A and 44A and the rear end portions 42B and 44B (inserted with almost no gap). In order to reduce the overall weight of the vehicle, it is made of a metal material such as aluminum or an aluminum alloy. The front end portions 42A and 44A and the rear end portions 42B and 44B of the upper coupling member 42 and the lower coupling member 44 have through holes so that bolts can be fastened to the solid block members 37, 39, and 40, respectively. (Not shown) is formed.

  Therefore, the front end portion 42A of the upper coupling member 42 is inserted with one end portion 40A of the bifurcated solid block member 40 (on the vehicle body upper side), and a bolt 46 is inserted into each through-hole to remove a nut (not shown). The upper upper member 42 is inserted into the rear end portion 42B, the solid block member 37 is inserted, the bolts 46 are inserted into the through holes, and the nuts (not shown) are fastened. The vehicle width direction outer side end portion and the upper mounting portion 36 of the front side member 12 are coupled.

  Similarly, the front end portion 44B of the bifurcated solid block member 40 is inserted into the front end portion 44A of the lower coupling member 44, and a bolt 46 is inserted into each through hole to form a nut (not shown). And a solid block member 39 is inserted into the rear end portion 44B of the lower coupling member 44, bolts 46 are inserted into the respective through holes, and tightened with nuts (not shown). The outer side end portion of the upper side 30 in the vehicle width direction and the lower mounting portion 38 of the front side member 12 are coupled.

  In the present embodiment, each side wall (upper coupling) of the front end portions 42A and 44A of the upper coupling member 42 and the lower coupling member 44 (the end portion coupled to the bifurcated solid block member 40 of the support upper side 30). Notches 42C and 44C for facilitating insertion of the solid block member 40 are formed on the side wall facing the lower side of the member 42 and the side wall facing the upper side of the lower coupling member 44 (see FIG. 6 and the like). ).

  Thus, the upper coupling member 42 and the lower coupling member 44 are provided on the outer end portion of the support upper side 30 in the vehicle width direction and the outer surface of the front end portion 12A of the front side member 12 at a predetermined interval in the vehicle body vertical direction. By combining the upper mounting portion 36 and the lower mounting portion 38, a truss structure having a substantially triangular shape including the front side member 12 is formed in a side view as viewed from the vehicle width direction. ing.

  Next, the operation of the vehicle body front structure 10 having the above configuration will be described. As described above, the upper mounting portion 36 and the lower mounting portion provided on the outer end of the support upper side 30 in the vehicle width direction and the outer surface of the front end 12A of the front side member 12 at a predetermined interval in the vertical direction of the vehicle body. 38 are coupled in a truss shape by the upper coupling member 42 and the lower coupling member 44.

  That is, a bifurcated solid block member 40 is provided on the lower surface of the vehicle width direction outer side end portion of the support upper side 30, and the upper mounting portion 36 on the outer surface of the front end portion 12 </ b> A of the front side member 12 has a solid shape. A block member 37 is provided, and a solid block member 39 is provided on the lower mounting portion 38.

  Therefore, the front end portion 42A of the upper coupling member 42 is inserted into one front end 40A of the solid block member 40 (the vehicle body upper side) and bolted, and the solid block member 37 is secured to the rear end portion 42B of the upper coupling member 42. Is inserted and fastened with bolts, the outer end in the vehicle width direction of the support upper side 30 and the upper mounting portion 36 on the outer surface of the front end 12A of the front side member 12 are coupled by the upper coupling member 42. The

  Similarly, the other end (vehicle body rear side) front end portion 40B of the solid block member 40 is inserted into the front end portion 44A of the lower coupling member 44 and bolted, and the rear end portion 44B of the lower coupling member 44 is solid. When the block member 39 is inserted and fastened with bolts, the outer end portion in the vehicle width direction of the support upper side 30 and the lower attachment portion 38 on the outer surface of the front end portion 12A of the front side member 12 are coupled to the lower side. Coupled by member 44. Thereby, a truss structure is formed by the upper coupling member 42, the lower coupling member 44, and the front side member 12.

  Here, the positions of the upper mounting portion 36 and the lower mounting portion 38 on the outer surface of the front end portion 12A of the front side member 12 are lower than the vehicle width direction outer side end portion of the support upper side 30 and on the rear side of the vehicle body. It is said that. Therefore, the support upper side 30 is favorably supported from the lower rear side of the vehicle body by the front side member 12 which is a highly rigid vehicle body skeleton member via the upper coupling member 42 and the lower coupling member 44 (by the truss structure). (Reinforced).

  Therefore, the vehicle body vertical direction and the vehicle body longitudinal direction excited by vehicle mounted parts (gravitational objects) such as the oil cooler 52 and the headlamp 54 due to the vehicle body vertical acceleration and vehicle body longitudinal acceleration generated during the traveling of the vehicle. Even if a load is input (loaded) to the support upper side 30, the load can be distributed to the upper and lower portions of the front side member 12 and acts on the support upper side 30. The bending moment in the direction and the longitudinal direction of the vehicle body can be reduced.

  In other words, by connecting the lower mounting portion 38 of the front side member 12 and the outer end in the vehicle width direction of the support upper side 30 with the lower connecting member 44, the lower connecting member 44 can connect the main side of the support upper side 30. The bending moment in the vertical direction of the vehicle body can be reduced, and the upper coupling portion 36 of the front side member 12 and the outer end portion in the vehicle width direction of the support upper side 30 are coupled by the upper coupling member 42, whereby the upper coupling The bending moment of the support upper side 30 mainly in the longitudinal direction of the vehicle body can be reduced by the member 42.

  Further, the upper coupling member 42 and the lower coupling member 44 are connected to the outer end in the vehicle width direction of the support upper side 30 and the front side member 12 via solid block members 37, 39, and 40 having high rigidity. Since it is coupled to the upper mounting portion 36 and the lower mounting portion 38 on the outer surface of the front end portion 12A (which are fastened together by the bolt 46), the assembling property is improved and a truss structure with high coupling rigidity is obtained. it can.

  Further, the vehicle body front part structure 10 for reducing the bending moment of the support upper side 30 is formed in the vehicle vertical direction on the outer side end in the vehicle width direction of the support upper side 30 and the outer surface of the front end 12A of the front side member 12. Since the upper mounting portion 36 and the lower mounting portion 38 that are provided at a predetermined interval are simply coupled by the upper coupling member 42 and the lower coupling member 44, respectively, a large number of reinforcing members are required. Therefore, the reinforcement structure can be simplified.

  The vehicle body front structure 10 according to the present embodiment has been described based on the examples shown in the drawings. However, the vehicle body front structure 10 according to the present embodiment is not limited to the illustrated examples. The design can be changed as appropriate without departing from the scope of the present invention. For example, the solid block member 40 provided on the lower surface of the outer end portion in the vehicle width direction of the support upper side 30 does not have a bifurcated shape, and can be separately accommodated so as to correspond to the upper coupling member 42 and the lower coupling member 44. It is good also as a structure provided in two.

Schematic perspective view showing the configuration of the vehicle body front structure Partially enlarged schematic perspective view showing the configuration of the vehicle body front structure Partially enlarged schematic perspective view showing the configuration of the vehicle body front structure Schematic plan view showing the configuration of the vehicle body front structure Schematic side view showing the configuration of the vehicle body front structure The schematic perspective view which shows the coupling | bond part of the coupling member in a support upper side The schematic perspective view which shows the coupling | bond part of the coupling member in a side member

Explanation of symbols

10 Car body front structure 12 Front side member (side member)
20 Radiator support 22 Support upper (upper part)
24 support lower 26 support side (side part)
28 Support Center 30 Support Upper Side (Upper Side Member)
32 support lower side 36 upper mounting portion 37 solid block member 38 lower mounting portion 39 solid block member 40 solid block member 42 upper coupling member 44 lower coupling member 50 radiator 52 oil cooler 54 headlamp (vehicle-mounted component)

Claims (3)

An upper side member that extends from the upper portion of the radiator support to the outside in the vehicle width direction than the side portion, and supports vehicle-mounted components;
The site located on the vehicle body lower side big one vehicle body rear side of the vehicle width direction outer end portion of the upper side member of the side member, the upper mounting portion and the lower attachment provided at predetermined intervals in the vertical direction of the vehicle body And
A coupling member that couples the outer side end of the upper side member and the upper mounting portion and the lower mounting portion in a truss shape that is triangular in a side view as viewed from the vehicle width direction ;
The vehicle body front part structure characterized by having.   The coupling member couples an upper coupling member that couples the vehicle width direction outer end portion of the upper side member and the upper mounting portion, and a vehicle width direction outer end portion of the upper side member and the lower mounting portion. The vehicle body front part structure according to claim 1, wherein the vehicle body front part structure is configured with a lower coupling member.   The upper coupling member and the lower coupling member are coupled to the vehicle width direction outer side end portion of the upper side member, the upper mounting portion, and the lower mounting portion via block members, respectively. The vehicle body front part structure according to claim 2.