JP5176460B2 - Automotive front structure - Google Patents

Description

  The present invention relates to a front structure of an automobile, and more particularly, to a front structure of an automobile in which a heat exchanger such as a radiator is supported by a resin shroud panel installed at the front of the vehicle.

  2. Description of the Related Art Conventionally, a front structure of an automobile is known in which a shroud panel constituting an end panel at the front of a vehicle body is formed of a resin member, and a heat exchanger such as a radiator is supported by the resin shroud panel. According to this front part structure, the front part of the vehicle body can be modularized (unitized), and the assembly workability of the vehicle body can be improved, so that it has been adopted in many automobiles in recent years.

  However, when the vehicle body front part is constituted by such a resin shroud panel, there is a possibility that the bonnet cannot be sufficiently supported due to insufficient rigidity.

Therefore, as shown in Patent Document 1, a metal reinforcement member server to up Pas main emission bar extending in the vehicle width direction at the shroud panel upper integrally molded by insert molding or the like, yet the resin shroud panel shroud What obtains the rigidity similar to a metal shroud panel in the upper part of a panel is known.

Incidentally, according to such a front structure, since the shroud panel top is fastened to the apron member of the upper engine room at the time of vehicle collision, a collision load from the front of the vehicle, the apron reinforcement member server from the shroud panel The transmitted collision load can be distributed, and the collision safety performance of the vehicle can be improved.

Japanese Patent Laid-Open No. 10-264855

  By the way, in recent years, the layout space in the engine room has decreased due to the need for expansion of the passenger compartment and the enlargement of the engine. Moreover, since the height position of the bonnet front end is also lowered, the position of the shroud panel is also retracted. For this reason, the heat exchanger supported by the shroud panel may be laid out not on the engine room side but on the vehicle front side.

On the other hand, the front overhang of the car is also a demand for increasing the steering stability of the automobile as short as possible, the position of the front van Pas has been retracted in the vehicle rear.

For these reasons, in recent years, vehicles adopting a layout structure for arranging the heat exchanger immediately after the front van Pas is increasing.

However, in the case of adopting such a layout structure, when the light collision, by the retreat of the front van Pas, briefly heat exchanger will be damaged, it must be replaced an expensive heat exchanger, repair There is a problem that the cost (repair cost) increases.

  In order to solve this problem, it is conceivable to adopt a structure in which the support rigidity of the shroud panel is reduced and the entire shroud panel is retracted in the event of a light collision.

However, since the adoption of such structure, when a heavy collision occurs, as in the aforementioned Patent Document 1, it can not be dispersed and transmitted the impact load to the vehicle body member such as the apron member server from the shroud panel, A new problem arises that the collision safety performance is degraded.

  Therefore, in the present invention, in a front structure of an automobile that supports a heat exchanger with a resin shroud panel at the front of the vehicle, the load distribution performance to the vehicle body of the shroud panel at the time of heavy collision is ensured, and at the time of light collision An object of the present invention is to provide a front structure of an automobile that can prevent damage to a heat exchanger as much as possible and reduce repair costs.

The front structure of the automobile according to the present invention includes an upper portion extending in the vehicle width direction, a lower portion extending in the vehicle width direction, and a side portion that extends and connects the upper portion and the lower portion in the vertical direction to support the heat exchanger. a shroud panel made of resin, a front structure of a vehicle equipped with a front vans path extending in the vehicle width direction at the vehicle front side of the shroud panel, said shroud panel, said provided with a metallic reinforcement a reinforcing part fixed to the vehicle body member of the vehicle rear-side Ri by front vans path, front end from reinforcing portion is positioned on the front side of the vehicle, a heat exchanger support portion for supporting the heat exchanger, automobiles and the reinforcing portion in a front view and a fragile portion formed at the boundary between the heat exchanger supporting unit, comprising a bumper beam extending in a vehicle width direction inside of the front bumper, cladding the front part of the left and right of the vehicle body member And a bumper beam is fixed to the left and right vehicle body members via the crash box, a load transmission bracket is provided between the heat exchanger support part and the bumper beam, and the reinforcing part is fixed. The vehicle body member is set to the vehicle body member at the vehicle rear side position from the crash box .

According to the above configuration, at the time of vehicle collision, the front van Pas is retracted, the heat exchanger support part receives the collision load is retracted. When the light collision by fragile portion is deformed or the like, will be the heat exchanger support portion is displaced relative to the reinforcing part, the heat exchanger is retracted interference with the front van Pas etc. Can be prevented. On the other hand, in the case of a heavy collision, a collision load further acts on the reinforcing portion, and the collision load is distributed and transmitted to the vehicle body member on the vehicle rear side through the reinforcing portion.
Therefore, at the time of a light collision, even if the front van Pas is retracted, the heat exchanger is supported by a shroud panel can be prevented from damage. On the other hand, at the time of a heavy collision, the collision load can be distributed to the vehicle body member on the vehicle rear side through the reinforcing portion.
Note that the in the "heat exchanger" is a radiator, capacitors of air conditioning apparatus, further includes in-Tak over La etc. supercharging device. Further, the "body member of the front van Pas by Ri vehicle rear side", the front side frame, apron reinforcement member server, bracket fixed to these members bar member, suspension cross member server, or the wheel house apron etc. Body panels are included.

Further, the vehicle body member to which the reinforcement portion is fixed is set to a vehicle body member at a vehicle rear side position from the crash box, and thus the reinforcement portion is formed by the vehicle body member at the vehicle rear side position from the crash box. Since it will fix, the position of a reinforcement part can be fixed, without being influenced by the crash box which deform | transforms by a light collision.
For this reason, since the reinforcing part does not displace rearward at the time of a light collision, a relative displacement is surely generated between the reinforcing part and the heat exchanger support part at the time of a light collision, and deformation or the like may occur in the fragile part. it can.
In addition, by fixing the reinforcing portion to the vehicle body member at the vehicle rear side position from the crash box, the collision load from the reinforcing portion is transmitted to the vehicle body member without being affected by the crash box.
Therefore, damage to the heat exchanger can be prevented more reliably, the protection performance of the heat exchanger at the time of a light collision can be improved, and the load distribution performance at the time of heavy collision can also be improved.

According to another embodiment of the present invention, the fragile portion, the reinforcing portion and the thin portion also formed on the border of the heat exchanger support portion which is constituted by a slit portion.
According to the above configuration, the fragile portion or thin portion by the slit portion, upon receipt of an impact load, the fragile portion is broken, the heat exchanger support portion and the heat exchanger, the vehicle rear Can be displaced relatively to the side.
Also, this way, by a thin portion or a slit portion fragile part, at the time of molding of the resin shroud panel, it is possible to form the fragile portion simultaneously.
Therefore, the heat exchanger support can be retracted in the event of a vehicle collision without deteriorating the productivity of the shroud panel, and both the protection of the heat exchanger at the time of light collision and the improvement of load distribution performance at the time of heavy collision Can be achieved.

In one embodiment of the present invention, the fragile portion is constituted by a rubber portion formed at a boundary between the reinforcing portion and the heat exchanger support portion.
According to the said structure, when a weak load is made into a rubber part, when a collision load is received, this weak part elastically deforms and a heat exchanger support part can be displaced relatively.
For this reason, a heat exchanger support part and a heat exchanger can be retracted, without producing a fracture | rupture in a shroud panel.
Therefore, at the time of a light collision, not only the heat exchanger but also the shroud panel need not be replaced, and the repair cost can be further reduced.

In one embodiment of the present invention, the reinforcing portion is formed continuously from the upper portion to the side portion, and both end portions of the reinforcing portion of the upper portion extend in the vehicle front-rear direction at both side ends in the vehicle width direction. fixed to the apron reinforcement member server, it is obtained by fixing the reinforcing portion of the side portion to the front side frame extending in the longitudinal direction of the vehicle.
According to the above arrangement, since the reinforcing portion of the beauty side portion Oyo reinforcing portion of the upper portion, to be fixed with respect to the apron member server and the front side frame, apron Men collision load during a heavy collision It can be reliably transmitted to the bar and the front side frame.
Therefore, load distribution at the time of a heavy collision can be appropriately performed on the frame members at the upper and lower positions, and the collision safety performance of the vehicle can be improved.

In one embodiment of the present invention, the reinforcing portion is formed in the upper portion, the side portion, and the lower portion so as to surround the heat exchanger, and both end portions of the reinforcing portion of the upper portion are arranged in the vehicle width. fixed to the apron reinforcement member bar extending in the longitudinal direction of the vehicle in the direction both side ends is obtained by fixing the reinforcing portion of the side portion to the front side frame extending in the longitudinal direction of the vehicle.
According to the above configuration, the reinforcing portion, the upper portion, and formed in a frame shape each time the side portion Oyo lower portion, for fixing the reinforcing portions apron member server and the front side frame, when the heavy collision in yield strength frame-like reinforcing portion of increased, can receive the collision load reliably, it is possible to reliably transmit the impact load to the apron member server and the front side frame.
Thus, the load distribution during heavy collisions, ensure or One suitably can be performed, it is possible to improve the collision safety performance of vehicles.

In one embodiment of the invention, the reinforcing portion of the lower portion is obtained by fixing the suspension cross member bar for supporting the suspension device.
According to the above configuration, by fixing the reinforcing portion of the lower portion to the suspension cross member bar, the position of the reinforcing portion of the lower portion is fixed.
For this reason, at the time of a light collision, the heat exchanger support part can be reliably displaced from the reinforcement part of the lower part. In addition, when the heavy collision can be transmitted collision load from the reinforcement portion of the lower portion to the suspension cross member server, it is possible to disperse the collision load.
Thus, by using the suspension cross member server, it is possible to increase the protection performance and load dispersion performance at heavy collision of the heat exchanger at the time of a light collision.

In one embodiment of the present invention, the heat exchanger support portion includes an upper frame portion extending in the vehicle width direction, a lower frame portion extending in the vehicle width direction, and a lateral portion extending in the vertical direction to connect the upper frame portion and the lower frame portion. comprising a frame part, the horizontal frame portion is obtained by fixing to the front van Pas van Pabi over arm.
According to the above configuration, by fixing the horizontal frame portion of the heat exchanger support portion on the front van Pas van Pabi over arm, at the time of collision of the vehicle, also the heat exchanger support portion of the frame-shaped with retraction of the front van Pas retracted Will do.
Therefore, the heat exchanger is supported by the heat exchanger supporting part, since there is no direct interference possibility van Pabi over beam, it is possible to reliably prevent damage to the heat exchanger.
Therefore, it is possible to reliably prevent the heat exchanger from being damaged and reduce the repair cost.

In one embodiment of the present invention, a hood lock mechanism for locking the bonnet is provided in the reinforcing portion of the upper portion.
According to the above configuration, since the hood lock mechanism is provided in the reinforcement part of the upper part, even if the heat exchanger support part is broken and detached from the reinforcement part at the time of a light collision, the hood lock mechanism is separated from the vehicle body side member. It can be prevented from being separated.
Thus, while preventing damage to the heat exchanger during a light collision, Ru can be enhanced bonnet support rigidity of the hood lock mechanism at the time of collision.

According to the invention, at the time of a light collision, even if the front van Pas is retracted, the heat exchanger is supported by a shroud panel can be prevented from damage. On the other hand, during a heavy collision, the collision load can be distributed to the vehicle body member on the vehicle rear side through the reinforcing portion.

  Therefore, in the front structure of an automobile that supports a heat exchanger with a resin shroud panel at the front of the vehicle, the heat exchanger at the time of a light collision while ensuring the load distribution performance to the vehicle body of the shroud panel at the time of a heavy collision As much as possible, the repair cost can be reduced.

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

  FIG. 1 is a front view of an automobile employing the automobile front structure according to the first embodiment of the present invention, FIG. 2 is a front perspective view of a shroud panel, FIG. 3 is a plan view of the automobile front structure, and FIG. 3 is a cross-sectional view taken along the line AA of FIG. 3, FIG. 5 is a detailed view of the main part of FIG. 4, FIG. 6 is a cross-sectional view taken along the line BB of FIG.

Front structure of this embodiment includes a front van Pas 1 extending in the vehicle width direction at the vehicle front end, a van Pabi over beam 2 extending in the vehicle width direction inside of the front van Pas 1, behind the van Pabi over arm 2 a front side frame 3, 3 extending in the longitudinal direction of the vehicle at a position, the apron member server 4, 4 extending in the longitudinal direction of the vehicle in the vehicle width direction side end portion, beauty cars Oyo vertically position behind van Pabi over arm 2 A shroud panel 5 that extends in the width direction and forms a front end wall of the engine room ER, and a perimeter frame 6 that extends in the vehicle width direction so as to bridge the left and right front side frames 3 and 3 below the engine room ER are provided. Reference numeral 7 denotes a headlamp, and 8 denotes a power train including the engine E and the transmission M.

Among them, the first aforementioned Van Pabi over arm 2, so as to ensure the longitudinal direction stiffness vehicle, constituted by members bar member which is formed by bending a substantially hat shape in upper and lower stages, installed inside the front van Pas 1 doing. In this van Pabi over arm 2, it is configured to receive a frontal collision load or offset collision load.

Front side frames 3, 3 of the foregoing is installed in the vehicle width direction on both sides the position of the engine room ER, is constituted by the member bar member of closed cross section of the pair of substantially rectangular extending in a longitudinal direction of the vehicle . In the front end of the front side frames 3, 3 through the crush boxes 9,9 (see Fig. 6) secure the foregoing Van Pabi over arm 2.
Therefore, with respect to the front side frames 3, 3, when the front collision load, etc. from the vehicle front side is applied, will be to distribute the load to the passenger compartment below the vehicle body frame (not shown), so-called "Ann Darro "Path" path is formed.

Apron member server 4, 4 described above is installed in the side end position of the upper portion of the engine room ER, is constituted by the member bar member rectangular closed cross section extending in the longitudinal direction of the vehicle.
The apron member server 4, 4, a front end 4a, 4a (see FIG. 6) to both end portions of the shroud panel 5 and fastened at the rear end portion (not shown) in the passenger compartment front portion of the front pillar group It is fixed to the end (not shown). Therefore, when the apron reinforcement member server 4, 4 frontal collision load etc. from the vehicle front side is applied, will be to distribute the load to the passenger compartment above the roof panel (not shown), so-called "up Palo Dopasu A path is formed.

Shroud panel 5 described above, as shown in FIG. 2, the up-Pas main emission bar portion 51 extending in the vehicle width direction at the top, the side portions 52, 52 extending vertically at the center positions on both sides, car bottom center position And a lower portion 53 extending in the width direction. Of these, up path main emission bus section 51 includes two arms 51a extending laterally on either side position, and 51a, and a sensor Taha Tsu path portion 51b of the center position.

The shroud panel 5, the entire panel body is molded in a resin member, and insert molding the Reinmen bar 5 4 metallic part.

Part that insert-molded metal Reinmen bar 5 4 as "reinforcing portion" 55, and configured to have substantially the same stiffness as the metal shroud panel.

The reinforcing portion 55, specifically, the arm portion 51a, the entire portion (55A) and the upper portion of the sensor Taha Tsu path portion 51b of 51a (55B), the same outer portion of the side portions 52, 52 (55C, 55C) The lower part (55D) of the lower part 53 is set, and in particular, the rectangular part (55B, 55C, 55D) is set in the central part.

On the inner side (center side) of the frame-shaped reinforcing portions (55B, 55C, 55D), a radiator support frame portion 56 is provided so as to protrude toward the vehicle front side. The radiator support frame 56, and upper frame section 56A is the lower portion of the sensor Taha Tsu path portion 51b, and a horizontal frame portion 56B, 56B is an inner part of the side portions 52 and 52, the upper portion of the lower portion 53 And a lower frame portion 56C. Further, the radiator support frame portion 56 supports the radiator R, which is a heat exchanger, with a total of four support portions 57 in the left and right positions of the upper frame portion 56A and the lower frame portion 56C.

Further, as shown in FIG. 4, the radiator support frame portion 56 has a rising wall surface 56 a that protrudes to the front side of the vehicle and a load receiving surface 56 b that extends in the vertical direction at the front end position. Among them, a load receiving surface 56b located at the front end position constitutes a van Pabi over arm 2 so as to receive the impact load toward the rear side of the vehicle.

As shown in FIG. 2, at the boundary between the reinforcing portion 55 and the radiator support frame portion 56, a thin fracture portion 58 is formed over the entire circumference so as to surround the radiator support frame portion 56. The thin broken part 58, as shown in FIG. 5 and Figure 7, the connecting wall portion 58a connecting between the reinforcing portion 55 and the radiator support frame portion 56, to form a V-shaped recess 58b It is composed by. And when the load more than predetermined value acts, it is comprised so that the radiator support frame part 56 may fracture | rupture easily by using this thin fracture | rupture part 58 as a trigger. The thin fracture portion 58 is formed simultaneously with the molding of the resin shroud panel 5.

Incidentally, metallic Reinmen bar 5 4 that is insert molded inside the reinforcing portion 55, as shown in FIGS. 5 and 7, is constituted by a substantially U-shaped member bar member, a relatively large load Even if this works, it has rigidity that does not easily deform.

  Further, the reinforcing portions 55 (55B, 55C) formed of resin are also formed in a substantially U-shaped cross section, but a rib portion 55a extending in the vehicle front-rear direction is formed therein, and this U-shaped Has retained rigidity.

The front surface of the sensor Taha Tsu path portion 51b of the shroud panel 5 forms a locking pocket portion 59 for accommodating the bonnet lock mechanism BL. Hood locking mechanism BL to be accommodated in the locking pocket 59, as shown in FIG. 5, is fixed to the reinforcement portion 55B of the sensor Taha Tsu path portion 51b, the metallic Reinmen bar 5 4 by fixing bolts or the like (not shown) It is fastened and fixed.
Therefore, the collision load acts, even when the behavior as jumping up the front end portion 11a of the hood 11 has occurred, without the hood locking mechanism BL is separated from the sensor Taha Tsu path portion 51b, the bonnet front end 11a Can be firmly held.

Further, as shown in FIG. 2, the side end portion of the arm portion 51 a of the up path main emission bar portion 51 is provided with aprons fixing portion 60 for fastening fixed to the front end 4a of the apron member server 4 .

When the vehicle body is assembled, the apron fixing portion 60 can be easily fastened and fixed to the front portion of the vehicle body by assembling the shroud panel 5 into which the radiator R is previously assembled and modularized from above the vehicle body. Further, this apron fixing portion 60, are firmly fixed and apron member server 4 of the reinforcing portion 55 and the vehicle body-side member of the shroud panel 5.

Further, bolt fixing holes 61 and 61 for assembling the shroud panel 5 to the front side frames 3 and 3 are formed on the front surface of the reinforcing portion 55C of the side portion 52 of the shroud panel 5.
As shown in FIG. 7, the bolt fixing hole 61 is provided to fasten and fix the mounting bolt 63 of the mounting plate 62 having a substantially L-shaped cross section joined to the front side frame 3 to the reinforcing portion 55 </ b> C of the side portion 52. ing. By fastening and fixing the attachment plate 62 using the bolt fixing holes 61, the reinforcing portion 55 of the shroud panel 5 can be firmly fixed to the front side frame 3.
This fastening and fixing is performed after the modularized shroud panel 5 is assembled from above the vehicle body.

Between the lateral frame portion 56B and vans Pabi over arm 2 of the radiator support frame portion 56 is provided with load transmitting bracket 70. The load transmitting bracket 70 is formed by a substantially crank-shaped bracket member, joined to the rear surface of the bun Pabi over beam 2 at the front flange portion 70a, at the rear flange 70b, the radiator support frame section 56 ( 56B) is fastened and fixed to the front surface.
Thus, the load transmitting bracket 70, by providing between the radiator support frame portion 56 and the van Pabi over arm 2, it is possible to transmit the collision load to the direct radiator support frame portion 56. In addition, after the collision, the radiator supporting frame portion 56 separated from the reinforcing portion 55 can be held by the load transmission bracket 70.

The sub frame 6 described above, as shown in FIG. 1, the upper ridge 6A both ends is fastened to the front side frame 3, 3 extending upward, 6A and horizontal members bar portion 6B extending in the vehicle width direction And.

The sub frame 6, the upper ridge 6A, axially supports the suspension arm of a front suspension device (not shown) in 6A, which functions as a support Kurosumen bar suspension device.

Further, the horizontal member server portion 6B of the sub frame 6, securing the connection plate 65 extending from the reinforcing portion 55B of the lower portion 53 of the shroud panel 5 above.
Specifically, as shown in FIG. 4, fastened with a connecting plate 65 joined to the lower surface of the reinforcing portion 55D of the lower portion 53, a transverse member bar portion 6B of the sub frame 6, the fastener 66 of the bolts and nuts doing.

  Thus, the shroud panel 5 is fastened and fixed to the perimeter frame 6 that is the vehicle body side member also in the reinforcing portion 55D of the lower portion 53.

Then, the vehicle body front portion when the frontal collision occurs, in particular for the deformation behavior of the shroud panel 5, 8, will be explained with reference to FIG. 9 and Figure 10. 8 is a cross-sectional view showing a deformed state of the shroud panel 5 when a collision load is applied. FIG . 8A corresponds to FIG. 7, and FIG. 8B corresponds to FIG . It is sectional drawing. Figure 9 is a plan view showing a deformed state of the front body at the time of collision, (a) is a plan view when the light collision of FIG. 9, the (b) of FIG. 9 is a plan view of the heavy collision. Figure 10 is a side view showing a deformation state of the front body at the time of collision, (a) is a side view when the light collision of FIG. 10, in FIG. 10 (b) is a side view of a heavy collision.

As shown in FIG. 8 (a), through the load transmitting bracket 70 fixed to the van Pabi over arm 2 to act collision load from the front side of the vehicle body van Pabi over arm 2, radiator support frame of the collision load shroud panel 5 Is transmitted to the unit 56.

  The radiator support frame portion 56 to which the collision load is transmitted has a backward movement behavior. This backward movement behavior causes bending deformation in the thin fracture portion 58 and causes “rupture”. As a result, the radiator support frame portion 56 and the radiator R are freely displaced relative to the rear side of the vehicle body without being restrained by the strong reinforcing portion 55.

Further, at the time of the collision, occurs buckling deformation even crash box 9 installed at the front end of the front side frame 3, but the collision energy formic is absorbed, even thus buckling deformation in the crash box 9 occurs Since the mounting plate 62 is joined and fixed to the front side frame 3, the reinforcing portion 55 does not retreat. Therefore, relative displacement is reliably generated between the reinforcing portion 55 and the radiator support frame portion 56, and the “rupture” of the thin-walled fracture portion 58 can be reliably caused.

  Further, as shown in FIG. 8B, also in the upper part (51 b) of the shroud panel 5, the “break” is triggered by the thin broken part 58 between the reinforcing part 55 and the radiator support frame part 56. Arise. For this reason, the radiator support frame portion 56 is freely displaced relative to the rear side of the vehicle body without being restrained by the reinforcing portion 55 even at the upper portion of the shroud panel 5.

However, as shown in FIG. 8 (b), the hood lock mechanism BL, since it is fixed to the reinforcing portion 55 of the sensor Taha Tsu path portion 51b, at the time of collision, the radiator support frame portion 56 from the reinforcing portion 55 leaving Even so, it is possible to prevent the bonnet lock mechanism BL from being detached from the vehicle body side member.

Specifically, when looking at the vehicle body structure, as shown in FIG. 9A, the crash box 9 fixed to the front end of the front side frame 3 is buckled and deformed in the event of a light collision. although Pabi over arm 2 is retracted, to relative displacement in the vehicle rear radiator support frame portion 56 receives the impact load, the radiator support frame portion 56 and the radiator R is moved rearward.

Therefore, even if the recession van Pabi over arm 2, it is possible to prevent interference with the radiator R, it is possible to prevent damage to the radiator R at the time of light collision.

As shown in FIG. 10 (a), when a collision load is applied, the radiator support frame portion 56 and the radiator R move backward so as to be positioned inside the reinforcing portion 55 of the shroud panel 5. it is possible to prevent interference between Pabi over arm 2, it is possible to prevent damage to the radiator R.

On the other hand, when the heavy collision, as shown in FIG. 9 (b), further, although Van Pabi over arm 2 is moved backward, the reinforcing portion 55 of the shroud panel 5, the front side frame 3, the apron member server 4 because it is fastened to a collision load acting from the van Pabi over arm 2 to the shroud panel 5 it will be transmitted to the vehicle body member of the vehicle body rear side, such as the front side frame 3 and the apron member server 4.

Therefore, it is possible to perform the collision load distribution described above as "Ann Aro Dopasu" by "up Palo Dopasu", it is possible to improve the collision safety performance of the vehicle by utilizing the reinforcing portion 55 of the shroud panel 5.

  As shown in FIG. 10B, the reinforcing portion 55D of the lower portion 53 of the shroud panel 5 is also fixed to the perimeter frame 6 so that the collision load at the lower portion of the shroud panel 5 is also transmitted through the connecting plate 65. It can be transmitted to the frame 6. Therefore, it is possible to further improve the dispersion performance of the collision load.

Next, the effect of this embodiment comprised in this way is demonstrated.
In this embodiment, the shroud panel 5, a metal Reinmen Bas 5 4 together front side frames 3, 3 and apron integrally molded member server 4, 4 reinforcing portion 55 which is fixed relative to the inner, reinforcing A radiator support frame portion 56 that supports the radiator R and is located on the vehicle front side of the portion 55, and a thin-walled fracture portion 58 that is formed at the boundary between the reinforcement portion 55 and the radiator support frame portion 56.

Thus, at the time of vehicle collision, the radiator support frame portion 56 receives the collision load retracts van Pabi over arm 2 is retracted. When the light collision, by the thin broken part 58 is broken, and the radiator support frame portion 56 will be relatively displaced with respect to the reinforcing portion 55, Van Pabi over beam 2 or the like radiator R is retracted Can prevent interference. On the other hand, when the heavy collision acts collision load even further reinforced portion 55, distributed impact load through the reinforcing portion 55 to the front side frames 3, 3 and the apron member server 4, 4 of the vehicle rear side Will be communicated.
Therefore, at the time of a light collision, even retracts van Pabi over arm 2, a radiator R, which is supported by a shroud panel 5 can be prevented from damage. On the other hand, during heavy collisions, it is possible to disperse the collision load to the front side frames 3, 3 and the apron member server 4, 4 of the vehicle rear side through the reinforcement part 55.
Therefore, in the front structure of the automobile in which the radiator R is supported by the resin shroud panel 5 at the front of the vehicle, the radiator R at the time of a light collision while ensuring the load distribution performance to the vehicle body of the shroud panel 5 at the time of a heavy collision. As much as possible, the repair cost can be reduced.

In this embodiment it has been described in the shroud panel 5 for supporting only the radiator R, other, may be configured to support the in-Tak over La etc. capacitor and a supercharging device of the air conditioner apparatus.

Further, in this embodiment, the thin broken portion 58 is formed at the same time as the resin molding of the shroud panel 5.
Thereby, the thin fracture | rupture part 58 can be easily shape | molded in the case of shaping | molding of resin-made shroud panels 5. FIG.
Therefore, the radiator support frame portion 56 can be retracted at the time of a vehicle collision without deteriorating the productivity of the shroud panel 5, and both the protection of the radiator R at the time of a light collision and the improvement of load distribution performance at the time of a heavy collision can be achieved. Can be achieved.

In addition, you may form the slit part 158 as shown in FIG. 11 instead of the thin fracture | rupture part 58 of this embodiment. By using the slit portion 158 as described above, when a collision load is applied, the “break” can be further promoted, and it is possible to achieve both the protection of the radiator R at the time of a light collision and the load distribution performance of a heavy collision. it can.
Further, since the slit portion 158 can be simultaneously formed when the resin shroud panel 5 is formed, the productivity of the shroud panel 5 is not deteriorated.

Further, this embodiment, a reinforcing portion 55 so as to surround the radiator R, up path main emission bar portion 51 of the shroud panel 5, the side portions 52, 52, formed in the lower portion 53 (55B, 55C, 55D), up path email the both ends of the down bar 51 is fixed to the apron member server 4, 4 (60, 60), the front side frames 3, 3 a reinforcing portion 55 of the side portions extending in the longitudinal direction of the vehicle (62, 62).
Accordingly, the reinforcing portion 55 up Pas main emission bar portion 51, and formed in a frame shape to the lower portion 53 and side portions 52, 52, the reinforcing portion 55 apron member server 4, 4 and the front side frames In the case of a heavy collision, the collision load can be reliably received by the reinforcing portion 55 having a substantially frame shape (55B, 55C, 55D) in the event of a heavy collision. can be reliably transmitted to the member server 4, 4 and the front side frames 3,3.
Thus, the load distribution during heavy collisions, ensure or One suitably can be performed, it is possible to improve the collision safety performance of vehicles.

In this embodiment, the reinforcing portion 55 </ b> D of the lower portion 53 of the shroud panel 5 is fixed to the perimeter frame 6.
Thereby, the position of the reinforcement part 55D of the lower part 53 of the shroud panel 5 is fixed reliably.
For this reason, in the case of a light collision, the radiator support frame portion 56 can be reliably displaced from the reinforcing portion 55D of the lower portion 53, and the radiator R and the radiator support frame portion 56 can be retracted. Further, in the case of a heavy collision, the collision load can be transmitted from the reinforcing portion 55 of the lower portion 53 to the perimeter frame 6, and the collision load can be dispersed.
Therefore, the perimeter frame 6 can be used to improve the protection performance of the radiator R at the time of light collision and the load distribution performance at the time of heavy collision.

Further, this embodiment includes, between the radiator support frame portion 56 and the van Pabi over arm 2 is provided with load transmitting bracket 70.
Thus, at the time of vehicle collision, the radiator support frame portion 56 together with the backing of the van Pabi over arm 2 also will be retracted.
Therefore, the radiator R, which is supported by the radiator support frame portion 56, since there is no direct interference possibility van Pabi over arm 2, it is possible to prevent damage to the radiator R more securely.
Therefore, it is possible to reliably prevent damage to the radiator R and reduce the repair cost.

In this embodiment, a hood lock mechanism BL for locking the hood 11 is provided in the reinforcing portion 55B.
Thereby, even if the radiator support frame portion 56 is broken and detached from the reinforcing portion 55 at the time of a light collision, the bonnet lock mechanism BL can be prevented from being separated from the vehicle body side.
Therefore, it is possible to increase the support rigidity of the hood 11 by the hood lock mechanism BL at the time of collision while preventing the radiator R from being damaged at the time of a light collision.

Further, this embodiment, the vehicle body member in which the reinforcing portion 55 is fixed, from the crash boxes 9 to absorb the collision energy formic, it is set to the front side frame 3 of the vehicle rear side.
Thereby, the reinforcement part 55 can be firmly fixed, without being influenced by the crash box 9 which is buckled and deformed by a light collision.
For this reason, since the position of the reinforcing portion 55 is not displaced at the time of a light collision, a relative displacement is surely generated between the reinforcing portion 55 and the radiator support frame portion 56 at the time of a light collision, and the thin fracture portion 58 is surely broken. Will occur.
Further, since the reinforcing portion 55 is fixed to the front side frame 3 at the vehicle rear side position from the crash box 9, the collision load from the reinforcing portion 55 is transmitted to the front side frame 3 without being affected by the crash box 9. Will be.
Therefore, the protection performance of the radiator R at the time of a light collision can be improved more reliably, and the load distribution performance at the time of a heavy collision can also be improved.

  Next, a second embodiment will be described with reference to FIG. FIG. 12 is a front view of an automobile employing the automobile front structure according to the second embodiment. In addition, about the component similar to 1st embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

This embodiment differs from the structure of the reinforcing portion 155 of the shroud panel 105 in the first embodiment, no reinforcing portions of the lower portion 153, reinforcing the reinforcing portion 155A, 155B and the side portion 152 of the up-Pas main emission Bas 151 The reinforcing portion 155 is configured by the portion 155C.

Thus, even when the configuration of the reinforcing portion 155, as in the first embodiment, the front side frames 3, 3 and apron member server 4, 4 for the reinforcement portions 155 are fastened and fixed to, Dispersion performance of the collision load at the time of heavy collision can be obtained in the same manner as in the first embodiment.

  Further, the thin broken portion 258 is also formed in a substantially gate shape at the boundary between the reinforcing portion 155 of the shroud panel 105 and the radiator support frame portion 156. For this reason, at the time of a light collision, a “break” occurs at the thin broken portion 258, and the radiator support frame portion 156 and the radiator R move to the vehicle rear side. Therefore, it is possible to prevent the radiator R from being damaged during a light collision.

In this embodiment, in particular, by eliminating the reinforcing portion of the lower portion 153, since it is possible to reduce the metal Reinmen server 5 4, it is possible to reduce the weight of the shroud panel 105 than the first embodiment . Further, since the number of metal members to be insert-molded can be reduced, the shroud panel 105 can be easily formed.

Therefore, according to this embodiment, the weight of the front end of the vehicle can be reduced, and the operability of the vehicle can be improved. Moreover, the load transmission performance of the heavy collision of the shroud panel 105 can be enhanced without deteriorating the moldability of the shroud panel 105.
In addition, about another effect, it is the same as that of 1st embodiment.

  Next, a third embodiment will be described with reference to FIG. FIG. 13 is a detail view of a main part of the third embodiment corresponding to FIG. In addition, about the component similar to 1st embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

This embodiment has the structure of the boundary between the reinforcing portion 255 and the radiator support frame portion 256 of the shroud panel 205, unlike the first embodiment, it is constructed by interposing a rubber member 358 between the two persons . The rubber member 358 is interposed between the resin reinforcing portion 255 and the radiator support frame portion 256 by welding and fixing.

As described above, by providing the rubber member 358 at the boundary between the reinforcing portion 255 and the radiator support frame portion 256, the rubber member 358 is elastically deformed in the event of a light collision as in the first embodiment, and the radiator since the supporting frame part 256 and the radiator R will be displaced relative to the reinforcing portion 255, it is possible to prevent interference with Ban Pabi over arm 2 and the radiator R.

Further, even when a heavy collision, the reinforcing portion 255 is the front side frames 3, 3 and the apron member server 4, 4 (see FIG. 6), because it is fastened and fixed to the sub frame 6 (see FIG. 4), reinforcing collision load acting on the part 255 may be dispersed by such "Ann Aro Dopasu" and "up Palo Dopasu", it is possible to enhance the collision safety of the vehicle.

  In particular, in this embodiment, the rubber member 358 is elastically deformed to relatively displace the radiator support frame portion 256, so that the radiator R does not cause a “break” as in the shroud panel 5 of the first embodiment. Therefore, it is not necessary to replace the shroud panel 205 itself during a light collision.

Therefore, according to this embodiment, at the time of a light collision, it is not necessary to replace not only the radiator R but also the shroud panel 205, and the repair cost can be further reduced.
In addition, about another effect, it is the same as that of 1st embodiment.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment,
Metal reinforcement of the invention corresponds to the metal Reinmen bar 5 4 embodiment,
Similarly,
The heat exchanger corresponds to the radiator R,
The heat exchanger support section corresponds to the radiator support frame section 56, the radiator support frame section 156, and the radiator support frame section 256,
The fragile portion corresponds to the thin-walled fracture portion 58, the slit portion 158, the thin-walled fracture portion 258, and the rubber member 358,
Suspension cross member bar also the present invention corresponds to the sub frame 6 is not limited to the embodiments described above, it is intended to include embodiments that apply to the front structure of any motor vehicle.

The front view of the motor vehicle which employ | adopted the front part structure of the motor vehicle of 1st embodiment. The front perspective view of a shroud panel. The top view of the front part structure of a motor vehicle. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. FIG. 5 is a detailed view of a main part of FIG. 4. FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 7 is a detailed view of a main part of FIG. 6. FIG. 8 is a cross-sectional view showing a deformed state of the shroud panel when a collision load is applied, in which (a) is a cross-sectional view corresponding to FIG. 7, and (b) is a cross-sectional view corresponding to FIG. FIG. 6 is a plan view showing a deformed state of the front part of the vehicle body at the time of a collision, where (a) is a plan view at the time of a light collision, and (b) is a plan view at the time of a heavy collision. FIG. 4A is a side view showing a deformed state of the front part of the vehicle body at the time of a collision, where FIG. 5A is a side view at the time of a light collision, and FIG. The principal part detail drawing of other embodiment corresponding to FIG. The front view of 2nd embodiment corresponding to FIG. FIG. 8 is a detail view of a main part of the third embodiment corresponding to FIG. 7.

R ... Radiator (heat exchanger)
1 ... Front Bang Pa 2 ... Van Pabi over arm <br/> 3 ... front side frame (vehicle body member)
4 ... apron member server 5, 105, 205 ... shroud panel 6 ... perimeter frame
9 ... crash box 51, 151 ... up path main down bar section (upper part)
52,152 ... the side portions 53, 153 ... lower part 54 ... metal Reinmen bar (metal reinforcement)
55 (55A, 55B, 55C, 55D), 155 (155A, 155B, 155C), 255 ... reinforcing portion 56, 156, 256 ... radiator support frame (heat exchanger support)
58 ... Thin-walled fracture part (fragile part)
70 ... Load transmission bracket 158 ... Slit part (fragile part)
258 ... Thin-walled fracture (fragile)
358 ... Rubber member (fragile part)

Claims (8)

A resin shroud panel that includes an upper portion that extends in the vehicle width direction, a lower portion that extends in the vehicle width direction, a side portion that extends and connects the upper portion and the lower portion in the vertical direction, and supports the heat exchanger;
A front structure of a vehicle equipped with a front vans path extending in the vehicle width direction at the vehicle front side of the shroud panel,
It said shroud panel comprises a reinforcing section fixed to the vehicle rear side of the vehicle body member Ri by the front vans path provided with a metallic reinforcement,
A heat exchanger support that supports the heat exchanger, the front end of the reinforcement being positioned on the front side of the vehicle;
A weak part formed at the boundary between the reinforcing part and the heat exchanger support part in a front view of the automobile ,
A bumper beam extending in the vehicle width direction inside the front bumper;
Crash boxes are provided at the front ends of the left and right body members,
The bumper beam is fixed to the left and right vehicle body members via the crash box,
A load transfer bracket is provided between the heat exchanger support and the bumper beam,
A vehicle front structure in which the vehicle body member to which the reinforcing portion is fixed is set to a vehicle body member at a position behind the crash box . It said weakened portion, a front structure of an automotive vehicle of the reinforcing portion and the thin portion also formed on the border of the heat exchanger support part according to claim 1, wherein configured at the slit portion. 2. The front structure of an automobile according to claim 1, wherein the fragile portion is constituted by a rubber portion formed at a boundary between the reinforcing portion and the heat exchanger support portion. The reinforcing part is continuously formed from the upper part to the side part,
Fixed to the apron reinforcement member bar extending in the longitudinal direction of the vehicle in the vehicle width direction side end of the both side ends of the reinforcing portion of the upper portion,
Front structure of an automobile according to what Re of claims 1 to 3, fixing the reinforcing portion of the side portion to the front side frame extending in the longitudinal direction of the vehicle. The reinforcing portion is formed on the upper portion, the side portion, and the lower portion so as to surround the heat exchanger,
Fixed to the apron reinforcement member bar extending in the longitudinal direction of the vehicle in the vehicle width direction side end of the both side ends of the reinforcing portion of the upper portion,
Front structure of an automobile according to what Re of claims 1 to 3, fixing the reinforcing portion of the side portion to the front side frame extending in the longitudinal direction of the vehicle. Wherein the reinforcing portion of the lower portion, the front structure of an automobile according to claim 5, wherein fixed to the suspension cross member bar for supporting the suspension device. The heat exchanger support part includes an upper frame portion which extends in the vehicle width direction, the lower frame portion extending in the vehicle width direction, a transverse frame portion connecting a beauty lower frame portion Oyo upper frame portion extends in the vertical direction,
Front structure of an automobile according to the transverse frame portion, what Re of claims 1-6 fixed to said front van Pas van Pabi over arm. The hood locking mechanism for locking the bonnet, vehicle front structure according to what Re one of claims 4-6 which is provided in the reinforcing portion of the upper portion.

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