JP4453511B2 - Cooling system support structure for vehicles - Google Patents

Description

  The present invention relates to a cooling system support structure for a vehicle that supports a cooling system disposed on the vehicle rear side of a front bumper reinforcement and below a front portion of a hood on a vehicle body side via a radiator support configured in a substantially frame shape. .

In the conventional vehicle body front structure, the energy at the time of frontal collision is absorbed by effectively crashing the front part of the vehicle body at the time of frontal collision. Specifically, if a crash box is interposed between both longitudinal ends of the front bumper reinforcement and the front ends of the pair of left and right front side members, and the front bumper reinforcement is displaced toward the rear of the vehicle at the time of a frontal collision, A structure is often used in which the crash box undergoes axial compression deformation and thereby absorbs energy in the event of a frontal collision.
Japanese Patent Laid-Open No. 10-264856 JP 2002-362171 A

  However, in the case of the above configuration, usually, a cooling system such as a radiator and engine parts are arranged with a slight gap on the rear side of the front bumper reinforcement, so that the front bumper reinforcement is displaced by the rear side of the vehicle. The cooling system may be damaged, for example, by interfering with engine parts. Further, since the hood is disposed close to the cooling system, depending on the magnitude of the input load and the load input direction at the time of a frontal collision, not only the cooling system but also the hood may be damaged.

  Recently, there is a tendency to adopt a vehicle design with a long wheelbase and a short overhang. However, when such a vehicle design is adopted, there is very little clearance between the front bumper reinforcement, the cooling system, and the engine. This is a further concern for the problem.

  In view of the above facts, an object of the present invention is to obtain a vehicle cooling system support structure that can effectively suppress or prevent damage to a cooling system or a hood during a frontal collision.

According to the first aspect of the present invention, there is provided a cooling system support structure for a vehicle via a radiator support having a substantially frame-like cooling system disposed on the vehicle rear side of the front bumper reinforcement and below the front portion of the hood. A cooling system support structure for a vehicle that is supported on the vehicle body side, and is locked to a predetermined position on the upper end side of the radiator support by a locked portion provided on the back side of the front portion of the hood when the hood is closed. A pair of left and right front side members arranged in the longitudinal direction of the vehicle front-rear direction on both ends of the front bumper reinforcement and both sides of the front of the vehicle body are provided with a hood lock for holding in a closed state. Crash boxes that can be axially compressed and deformed by a load input at the time of frontal collision are interposed between the front end and the radiator in side view. Load receiving portion attached to the side or the sides of the ports are disposed at a distance from each other in the vehicle rear side of the front bumper reinforcement is arranged closer to the vehicle front side of the cooling system, a frontal collision Sometimes when the front bumper reinforcement is displaced toward the rear of the vehicle, the crash box is compressed and deformed by a predetermined stroke and the side of the radiator support or the load receiving portion is pressed toward the rear of the vehicle. Rotational displacement means for rotationally displacing the vehicle to the vehicle rear side and the vehicle upper side is provided.

  According to a second aspect of the present invention, there is provided the cooling system support structure for a vehicle according to the first aspect, wherein the rotational displacement means is a rotational displacement of the lower end side of the radiator support relative to a rotational displacement amount of the upper end side of the radiator support. The displacement amount is adjusted so that the amount becomes larger.

A cooling system support structure for a vehicle according to a third aspect of the present invention is the cooling system support structure for a vehicle according to the first or second aspect, wherein the rotational displacement means has one end coupled to a radiator support and the other end crashed. It is characterized by comprising a bracket made of a plate-like member connected to an attachment portion to the front side member of the box.

  According to a fourth aspect of the present invention, there is provided the cooling system support structure for a vehicle according to the third aspect, wherein the bracket is interposed between the radiator support and the crash box, and the load is input to the radiator support. It is characterized by comprising a plastically deforming portion that expands or contracts in the load input direction.

  According to a fifth aspect of the present invention, there is provided the cooling system support structure for a vehicle according to the third aspect, wherein the bracket is interposed between the radiator support and the crash box, and is connected to the radiator support. An arc welded portion that is a starting point of relative displacement of the radiator support with respect to the crash box is set on one end and the other end that is a connecting portion to the mounting portion of the crash box.

  According to a sixth aspect of the present invention, there is provided the cooling system support structure for a vehicle according to the first or second aspect, wherein the radiator support includes a radiator support upper that constitutes an upper portion and a radiator support lower that constitutes a lower portion. When the rotational displacement means is connected to the radiator support upper so that the radiator support lower inclines at a predetermined angle with respect to the radiator support upper, the load at the time of a frontal collision is input to the radiator support lower. It is a connecting member that rotates and displaces the radiator support lower to the vehicle rear side so that the inclination angle of the radiator support lower with respect to the radiator support upper is reduced by being deformed.

  According to a seventh aspect of the present invention, there is provided the vehicle cooling system support structure according to the first or second aspect, wherein the radiator support has a lower portion bent toward the vehicle rear side with respect to the upper portion. The rotational displacement means is provided at the bent part between the upper part and the lower part. It is a low-strength part that is rotationally displaced to the side.

The cooling system support structure for a vehicle according to the present invention as set forth in claim 8 is the invention according to any one of claims 1 to 7, wherein the front side member has a radiator support having a predetermined amount centered on a hood lock. It is characterized in that there is provided restriction means for interfering with the radiator support or the rotational displacement means at the time of rotation and preventing further rotation.

  According to the first aspect of the present invention, the cooling system supported on the vehicle body side via the radiator support having a substantially frame shape is disposed on the vehicle rear side of the front bumper reinforcement and below the front portion of the hood. Has been.

  During normal vehicle travel, the hood lock provided at a predetermined position on the upper end side of the radiator support is locked to the locked portion provided on the back side of the front portion of the hood so that the hood is closed. Retained.

On the other hand, when a frontal collision occurs, a collision load on the vehicle rear side is input to the front bumper reinforcement. For this reason, the front bumper reinforcement is displaced toward the vehicle rear side in accordance with the magnitude of the input collision load. When the front bumper reinforcement is displaced toward the rear side of the vehicle, a pair of left and right crash boxes interposed between the front end portion of the front side member and the longitudinal end portion of the front bumper reinforcement are axially compressed and deformed. The radiator support is pressed toward the vehicle rear side. When the radiator support is pressed to the vehicle rear side, the cooling system is rotationally displaced about the hood lock to the vehicle rear side and the vehicle upper side by the rotational displacement means. As a result, it is possible to avoid as much as possible that the cooling system interferes with other parts and the cooling system itself is damaged, or the hood interferes with the cooling system and is damaged.

  According to the second aspect of the present invention, the rotational displacement means is adjusted so that the rotational displacement amount on the lower end side of the radiator support is larger than the rotational displacement amount on the upper end side of the radiator support. Therefore, the behavior when the cooling system is rotationally displaced from the hood lock to the vehicle rear side and the vehicle upper side coincides with the rotational displacement amount. That is, the amount of rotational displacement becomes smaller near the hood lock, and the amount of rotational displacement becomes larger away from the hood lock.

According to the third aspect of the present invention, the rotational displacement means is provided by the bracket made of a plate-like member having one end portion coupled to the radiator support and the other end portion coupled to the attachment portion to the front side member of the crash box. Since the other end of the bracket is coupled to the mounting part of the crash box, most of the load when the radiator support and the cooling system are rotationally displaced to the rear side of the vehicle and to the upper side of the vehicle is in the mounting part of the crash box. Entered. That is, it is possible to suppress the load from being input to the front side member as much as possible. Therefore, it is possible to prevent the front side member from being damaged due to the load input from the bracket.

  According to the fourth aspect of the present invention, the bracket constituting the rotational displacement means is interposed between the radiator support and the crash box, and extends or contracts in the load input direction by the load input to the radiator support. Since the plastic deformation portion is provided, rotational displacement of the radiator support and the cooling system is realized by plastic deformation such as expansion or contraction of the bracket. Therefore, the amount of rotational displacement of the radiator support and the cooling system can be arbitrarily adjusted by adjusting the shape, size, and the like of the plastic deformation portion of the bracket.

  According to the fifth aspect of the present invention, the bracket constituting the rotational displacement means is interposed between the radiator support and the crash box, and one end portion which is a coupling portion to the radiator support and the attachment portion of the crash box The arc welding part that is the starting point of the relative displacement of the radiator support with respect to the crash box is set at the other end, which is the connecting part to the front part, so when the front bumper reinforcement pushes the radiator support to the rear side of the vehicle at the time of frontal collision The bracket is deformed or displaced starting from each arc weld, thereby causing a relative displacement of the radiator support to the crash box. That is, in the present invention, arc welding is used so that the joint strength in the load input direction at the time of a frontal collision becomes weak. Since the arc welding itself is performed in the body assembly process of the automobile, there is an advantage that the configuration can be established using the existing equipment.

  According to the sixth aspect of the present invention, the radiator support is divided into the radiator support upper constituting the upper part and the radiator support lower constituting the lower part, and both are connected by the connecting member constituting the rotational displacement means. Yes. As a result, in a normal state, the radiator support lower is held in a state where it is inclined at a predetermined angle with respect to the radiator support upper.

  On the other hand, when a collision load is input to the radiator support lower during a frontal collision, the connecting member itself is deformed, and the radiator support lower rotates to the rear of the vehicle so that the inclination angle of the radiator support lower with respect to the radiator support upper is reduced. Displaced.

  As described above, in the present invention, the radiator support is divided into the radiator support upper and the radiator support lower, and the connecting member for connecting the two has a function as a rotational displacement means. The behavior can be completed. Therefore, as in the third aspect of the invention described above, there is no possibility that the front side member is damaged by the load input at the time of collision, and there is a space for installing the rotational displacement means between the crash box and the radiator support. The configuration can be established even when there is no such device.

  According to the seventh aspect of the present invention, the lower portion of the radiator support is bent with respect to the upper portion, and the bent portion is provided with a low-strength portion constituting rotational displacement means. For this reason, when a collision load is input to the lower part of the radiator support at the time of a frontal collision, the lower part is rotationally displaced toward the rear side of the vehicle so that the inclination angle with respect to the lower part of the upper part starts from the low strength part itself.

  Thus, in the present invention as well, as in the invention described in claim 6, since the rotational displacement behavior can be completed in the radiator support system, the front side member may be damaged by the load input at the time of collision. The structure can be established even when there is no space for installing the rotational displacement means between the crash box and the radiator support.

  In addition, in the case of the present invention, since the radiator support is not divided into upper and lower parts, parts corresponding to the connecting member become unnecessary. Therefore, the number of parts is reduced.

According to the eighth aspect of the present invention, since the restricting means is provided on the front side member, when the radiator support rotates a predetermined amount around the hood lock, the radiator support or the rotational displacement means interferes with the restricting means, and more Is prevented from rotating.

  As described above, the vehicular cooling system support structure according to the first aspect of the present invention is such that when the front bumper reinforcement is displaced toward the vehicle rear side and the radiator support is pressed toward the vehicle rear side at the time of a frontal collision, the hood Since the rotation displacement means for rotating the cooling system around the lock to the rear side and the upper side of the vehicle is provided, it is possible to effectively suppress or prevent the cooling system or the hood from being damaged at the time of a frontal collision. It has an excellent effect.

  According to a second aspect of the present invention, there is provided the vehicle cooling system support structure according to the first aspect, wherein the rotational displacement means is a rotational displacement amount on the lower end side of the radiator support rather than a rotational displacement amount on the upper end side of the radiator support. Since the amount of displacement is adjusted so that it becomes larger, the behavior when rotating the cooling system to the rear side of the vehicle and the upper side of the vehicle around the hood lock can be matched with the rotational displacement amount, As a result, there is an excellent effect that the cooling system can be smoothly rotated and displaced.

  A cooling system support structure for a vehicle according to a third aspect of the present invention is the cooling system support structure according to the first or second aspect, wherein one end is coupled to the radiator support and the other end is a front side member of the crash box. The rotational displacement means described above is constituted by a bracket made of a plate-like member connected to the mounting portion of the rim, so that it is possible to suppress the collision load from being input to the front side member through the bracket as much as possible. It has the outstanding effect that it can prevent that damage, such as a deformation | transformation, generate | occur | produces in a side member.

  According to a fourth aspect of the present invention, there is provided the cooling system support structure for a vehicle according to the third aspect, wherein the bracket is interposed between the radiator support and the crash box, and the load is input to the radiator support. Since it has a plastic deformation part that expands or contracts in the load input direction, the amount of rotational displacement of the radiator support and cooling system can be adjusted arbitrarily by adjusting the shape and dimensions of the plastic deformation part of the bracket. As a result, there is an excellent effect that the amount of rotational displacement of the cooling system with respect to the input load can be easily optimized.

  According to a fifth aspect of the present invention, there is provided the cooling system support structure for a vehicle according to the third aspect, wherein the bracket is interposed between the radiator support and the crash box, and is a connecting portion to the radiator support. Arc welds that are the starting points of relative displacement of the radiator support with respect to the crash box are set on the other end, which is the connection to the one end and the mounting part of the crash box. As a result, it has an excellent effect of suppressing an increase in cost.

  According to a sixth aspect of the present invention, there is provided the cooling system support structure for a vehicle according to the first or second aspect, wherein the radiator support includes a radiator support upper that constitutes an upper portion and a radiator support lower that constitutes a lower portion. In normal times, the radiator support lower is connected to the radiator support upper so that the radiator support lower is inclined at a predetermined angle, and when the load at the time of a frontal collision is input to the radiator support lower, it deforms itself. Since the rotational displacement means is constituted by the connecting member that rotationally displaces the radiator support lower to the rear side of the vehicle so that the inclination angle of the radiator support lower with respect to the radiator support upper is reduced, the rotational displacement behavior is completed in the radiator support system. Can result in damage to the front side member It has an excellent effect that is advantageous in installation space can be reliably prevented from occurring.

  According to a seventh aspect of the present invention, there is provided the cooling system support structure for a vehicle according to the first or second aspect, wherein the radiator support has a lower portion bent toward the vehicle rear side with respect to the upper portion. Low strength, which is provided at the bent part with the lower part and rotationally displaces the lower part to the rear of the vehicle so that the inclination angle of the lower part with respect to the upper part decreases with the load at the time of frontal collision input to the lower part Since the rotational displacement means is configured by the part, the rotational displacement behavior can be completed in the radiator support system, and as a result, the damage prevention effect (protection effect) for the front side member and the installation space advantage are obtained. In addition, there is an excellent effect that a cost reduction effect can be obtained by reducing the number of parts.

According to the eighth aspect of the present invention, there is provided the vehicle cooling system support structure according to any one of the first to seventh aspects, wherein the radiator support is rotated by a predetermined amount around the hood lock on the front side member. Since the restriction means for preventing the further rotation by interfering with the radiator support or the rotation displacement means at the time is provided, it is possible to prevent the radiator support from being excessively displaced and interfere with other parts. Has an effect.

[First Embodiment]
Hereinafter, a first embodiment of a cooling system support structure for a vehicle according to the present invention will be described with reference to FIGS. It should be noted that an arrow FR appropriately shown in these drawings indicates a vehicle front side, an arrow UP indicates a vehicle upper side, an arrow IN indicates a vehicle width direction inner side, and an arrow OUT indicates a vehicle width direction outer side. Is shown.

  FIG. 1 is a plan view showing an entire configuration around a cooling system 10 to which a vehicle cooling system support structure according to the present invention is applied. FIG. 2 is a schematic diagram (side view) showing the state before and after the collision.

  As shown in these drawings, a front bumper including a front bumper reinforcement 12 is disposed at the front end of the vehicle. The front bumper reinforcement 12 is a long member having a U-shaped cross section, and is disposed inside the front bumper cover with the vehicle width direction as a longitudinal direction. The front bumper reinforcement has various configurations, and may have a closed cross-sectional structure using two plates.

  A pair of left and right front side members 14 are arranged on both sides of the front portion of the vehicle with the longitudinal direction of the vehicle as the longitudinal direction. Between the front end portion of each front side member 14 and the end portion of the front bumper reinforcement 12 in the longitudinal direction, a crash box 16 having a cylindrical shape elongated in the vehicle front-rear direction is interposed. The crash box 16 is integrally formed with a crash box body portion 16A that undergoes axial compression deformation when a collision load of a predetermined value or more from the front bumper reinforcement 12 is input to the vehicle rear side, and a rear end portion of the crash box body portion 16A. Or a rectangular flat plate mounting portion 16B that is formed separately or is fixed by welding. Bolt insertion holes (not shown) are formed at the four corners of the attachment portion 16B, and the attachment portions 16B are fixed to the front end portion of the front side member 14 with bolts and nuts using the bolt insertion holes. Similarly, the front end portion of the crash box main body portion 16A is also fixed to the rear surface of the end portion of the front bumper reinforcement 12 in the longitudinal direction by bolts and nuts or welding.

  There are various fixing structures for the crash box 16, as in the case of the rear end portion, a mounting flange is also installed at the front end portion, or the crash box main body portion 16 A is formed in a bottomed cylindrical shape at the bottom portion. For example, a bolt insertion hole with a female thread is formed in advance.

  A space having a narrow width in the vehicle front-rear direction is formed between the front bumper reinforcement 12 described above and an engine component (engine front end component) (not shown) disposed on the vehicle rear side. In this space, there is disposed a cooling system 10 which is composed of a radiator core, a fan, a fan shroud and the like and is supported on the body side by a radiator support 24. The radiator support 24 is formed in a substantially rectangular frame shape when viewed from the front, and is coupled to the body side. Further, in the assembled state, the side portion 24B of the radiator support 24 is disposed at a position protruding from the cooling system 10 toward the front side of the vehicle in a side view (see FIG. 2A).

  A hood lock 20 for maintaining the hood 26 in a closed state is disposed at the center of the upper end 24A of the radiator support 24 (a long portion disposed with the vehicle width direction as the longitudinal direction). Correspondingly, a locked portion 22 to which the hood lock 20 is engaged is formed on the back side of the front end portion of the hood 26 by an urging force of an urging means such as a torsion coil spring. In order to open the hood 26, first, a hood release lever (not shown) disposed in the operation area of the driver is operated, and the locked state of the hood 26 is once released. At this time, since the hood lock 20 is still engaged with the locked portion 22, the hood 26 cannot be opened. Subsequently, when the hood 26 is lifted slightly, a finger is inserted through the gap formed to release the hood 26, so that the engagement state of the hood lock 20 with the locked portion 22 is released and the hood 26 is opened. It becomes possible.

  Here, a damager bracket 28 as rotational displacement means is disposed between the side portion 24B of the radiator support 24 and the mounting portion 16B of the crash box 16 described above. Hereinafter, the damager bracket 28 will be described in detail.

  FIG. 3 shows a perspective view of the damager bracket 28. As shown in this figure, the damager bracket 28 is formed in a cross-sectional hat shape in a plan view, and includes a front part 28A and a rear part 28B set to the same width, and the front part 28A and the rear part 28B. And an intermediate portion 28C as a plastic deformation portion having a U-shaped connecting cross section.

  Bolt insertion holes 30 are formed on the front portion 28A at two locations, upper and lower, and fixed to the bent portion 16B ′ (see FIG. 1) provided at the inner end of the mounting portion 16B of the crash box 16 with bolts 32 and nuts 34. Has been. The rear portion 28B is welded to a mounting plate 36 attached to the side portion 24B of the radiator support 24. Accordingly, the radiator support 24 is connected to the mounting portion 16B of the crash box 16 via the damager bracket 28. Further, in the assembled state, the intermediate portion 28C is arranged outward in the vehicle width direction. Further, the intermediate portion 28 </ b> C is formed so that the amount of protrusion outward in the vehicle width direction increases from the upper end portion toward the lower end portion. That is, the intermediate portion 28C is formed in a hem-extended shape.

  Next, the operation and effect of this embodiment will be described.

  The state shown in FIGS. 1A and 2A is the state before the collision. During normal vehicle travel, the hood lock 20 disposed at the center of the upper end portion 24A of the radiator support 24 is engaged with the locked portion 22 provided on the back side of the front end portion of the hood 26, and the hood 26 Is kept closed.

  When a frontal collision occurs from this state, a collision load from the collision barrier 38 is input to the front bumper reinforcement 12. For this reason, the front bumper reinforcement 12 is displaced toward the vehicle rear side. Since the crash box 16 is interposed between the longitudinal end portion of the front bumper reinforcement 12 and the front end portion of the front side member 14, when the front bumper reinforcement 12 is displaced rearward, the crash box 16 is Axial compression deformation. Thereby, the collision energy at the time of frontal collision is absorbed.

  As shown in FIGS. 1B and 2B, when the deformation stroke of the crash box 16 reaches a predetermined stroke, the front bumper reinforcement 12 interferes with the lower side of the side portions 24B of the radiator support 24. For this reason, the radiator support 24 is pressed to the vehicle rear side. As a result, a load toward the rear side of the vehicle is input to the damager bracket 28 that connects the side portion 24B of the radiator support 24 and the mounting portion 16B of the crash box 16.

  Specifically, first, a collision load to the rear side of the vehicle is input to the rear portion 28B of the damager bracket 28 that is directly coupled to the side portion 24B of the radiator support 24 via the mounting plate 36. On the other hand, since the front portion 28A of the damager bracket 28 is fixed to the bent portion 16B ′ of the mounting portion 16B of the crash box 16 with the bolt 32 and the nut 34, the input collision load is a tensile load toward the rear side of the vehicle. It acts on the intermediate portion 28C of the damager bracket 28. For this reason, the intermediate portion 28C of the damager bracket 28 is plastically deformed in the direction in which it opens (extends).

  Here, since the intermediate portion 28C of the damager bracket 28 is formed in a skirt-extended shape, the amount of plastic deformation is larger on the lower end side than on the upper end side. For this reason, the radiator support 24 and the cooling system 10 are rotationally displaced toward the vehicle rear side and the vehicle upper side around the engagement point of the hood lock 20 with the locked portion 22. As a result, according to the cooling system support structure for a vehicle according to the present embodiment, the cooling system 10 interferes with other parts and the cooling system 10 itself is damaged, or the hood 26 interferes with the cooling system 10 and is damaged. It is possible to avoid receiving as much as possible.

  In addition, in addition, in the present embodiment, the radiator support 24 and the cooling system 10 are rotationally displaced around the hood lock 20 at the time of a frontal collision. At that time, the radiator support 24 is moved from the hood lock 20 to the locked portion 22, that is, the hood 26. The load (self-weight) of 24 and the cooling system 10 and the collision load are not necessarily input. The phrase “centering on the hood lock (20)” in claim 1 means that the geometric center of rotation is the point of engagement of the hood lock 20 with the locked portion 22. In other words, the shape and plastic deformation of the damager bracket 28 so that the displacement behavior of the radiator support 24 and the cooling system 10 at the time of a frontal collision is rotational displacement toward the vehicle rear side and the vehicle upper side with the hood lock 20 as the center. This means that the mode is determined, that is, the virtual center when the cooling system 10 and the radiator support 24 are rotationally displaced.

  Further, in the vehicle cooling system support structure according to the present embodiment, the shape of the intermediate portion 28C of the damager bracket 28 is a hem-opening shape, so that the amount of plastic deformation of the intermediate portion 28C is less on the upper end side and the lower end side. Therefore, the amount of rotational displacement becomes smaller near the hood lock 20, and the amount of rotational displacement becomes larger away from the hood lock 20. Therefore, the behavior when the cooling system 10 is rotationally displaced from the hood lock 20 to the vehicle rear side and the vehicle upper side coincides with the rotational displacement amount (plastic deformation mode of the damager bracket 28). As a result, according to the present embodiment, the cooling system 10 can be smoothly rotated and displaced.

  Furthermore, in the vehicle cooling system support structure according to the present embodiment, the connecting point of the damager bracket 28 to the body is set to the attachment portion 16B of the crash box 16, so that the radiator support 24 and the cooling system 10 are located on the vehicle rear side and Most of the load at the time of rotational displacement to the vehicle upper side is input to the mounting portion 16B of the crash box 16. That is, it is possible to suppress the load from being input to the front side member 14 as much as possible. As a result, according to the present embodiment, it is possible to prevent the front side member 14 from being damaged due to the load input from the damager bracket 28.

  Further, in the vehicle cooling system support structure according to the present embodiment, the rotational displacement means for rotationally displacing the radiator support 24 and the cooling system 10 is configured by the damager bracket 28 configured by press molding of a plate-like member. By adjusting the shape, dimensions, and the like of the deformed intermediate portion 28C, the rotational displacement amounts of the radiator support 24 and the cooling system 10 can be arbitrarily adjusted. As a result, according to the present embodiment, it is possible to easily optimize the rotational displacement amount of the cooling system 10 with respect to the input load.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 4 to 6, this embodiment is characterized in that the configuration of the damager bracket 40 as the rotational displacement means is changed.

  Specifically, in the second embodiment, a damager bracket 40 obtained by press-molding a plate-like member so as to have an accordion shape is used. The damager bracket 40 includes a front part 40A and a rear part B for attachment, and an intermediate part 40C as a plastic deformation part that connects the two parts. The intermediate portion 40C of the damager bracket 40 is formed in a bellows shape (formed in a zigzag shape in a plan view), and is further formed in a hem-extended shape in a side view. Therefore, the damager bracket 40 is set to have a larger plastic deformation length on the lower end side than on the upper end side. In addition, the bolt insertion hole 30 is formed in the rear part 40B similarly to the damager bracket 28 of 1st Embodiment mentioned above.

  The damager bracket 40 is disposed between the side portion 24B of the radiator support 24 and the mounting portion 16B of the crash box 16. The front portion 40A is welded to the side portion 24B of the radiator support 24, and the rear portion 40B is fixed to the bent portion 16B 'of the mounting portion 16B of the crash box 16 with a bolt 32 and a nut 34.

  Next, the operation and effect of this embodiment will be described.

  The state shown in FIGS. 4A and 5A is the state before the collision. During normal vehicle travel, the hood lock 20 disposed at the center of the upper end portion 24A of the radiator support 24 is engaged with the locked portion 22 provided on the back side of the front end portion of the hood 26, and the hood 26 Is kept closed.

  When a frontal collision occurs from this state, a collision load from the collision barrier 38 is input to the front bumper reinforcement 12. For this reason, the front bumper reinforcement 12 is displaced toward the vehicle rear side. Since the crash box 16 is interposed between the longitudinal end portion of the front bumper reinforcement 12 and the front end portion of the front side member 14, when the front bumper reinforcement 12 is displaced rearward, the crash box 16 is Axial compression deformation. Thereby, the collision energy at the time of frontal collision is absorbed.

  As shown in FIGS. 4B and 5B, when the deformation stroke of the crash box 16 reaches a predetermined stroke, the front bumper reinforcement 12 interferes with the lower side of the side portions 24B of the radiator support 24. For this reason, the radiator support 24 is pressed to the vehicle rear side. As a result, a load toward the rear side of the vehicle is input to the damager bracket 40 that connects the side portion 24B of the radiator support 24 and the mounting portion 16B of the crash box 16.

  Specifically, first, a collision load on the vehicle rear side is input to the front portion 28A of the damager bracket 28 that is directly coupled to the side portion 24B of the radiator support 24. On the other hand, since the rear portion 28B of the damager bracket 28 is fixed to the bent portion 16B ′ of the mounting portion 16B of the crash box 16 with bolts 32 and nuts 34, the input collision load is damaged as a tensile load toward the rear side of the vehicle. It acts on the intermediate part 40C of the jar bracket 40. For this reason, the intermediate portion 40C of the damager bracket 40 is plastically deformed in the closing (shrinking) direction.

  Here, since the damager bracket 40 is formed in a hem shape, the amount of plastic deformation is larger on the lower end side than on the upper end side. For this reason, the radiator support 24 and the cooling system 10 are rotationally displaced toward the vehicle rear side and the vehicle upper side around the engagement point of the hood lock 20 with the locked portion 22. As a result, according to the cooling system support structure for a vehicle according to the present embodiment, the cooling system 10 interferes with other parts and the cooling system 10 itself is damaged, or the hood 26, as in the first embodiment described above. Can be prevented from interfering with the cooling system 10 and being damaged as much as possible.

  Further, the damager bracket 40 of the present embodiment also functions in the same manner as the damager bracket 28 of the first embodiment described above. Therefore, the other effects described in the first embodiment (the damager bracket 40 is connected to the bottom). Due to the widened shape, the cooling system 10 can be smoothly rotated and displaced, the front side member 14 can be prevented from being damaged due to the load input from the damager bracket 40, and plastic deformation is caused. The effect that the amount of rotational displacement of the cooling system 10 with respect to the input load can be easily optimized by adjusting the shape, dimensions, etc. of the intermediate portion 40C is also obtained.

  Furthermore, according to the present embodiment, the plastic deformation direction of the damager bracket 40 is opposite to that of the damager bracket 28 of the first embodiment (the former is contracted and the latter is expanded), so that the front portion 40A is supported by the radiator. It can be welded directly to the 24 sides 24A. Therefore, the mounting plate 36 becomes unnecessary, and accordingly, the structure can be simplified and the cost can be reduced by reducing the number of parts.

  In the present embodiment, the intermediate portion 40C of the damager bracket 40 is formed in a bellows shape, but is not limited thereto, and may be formed in a wave shape or the like.

[Third Embodiment]
Hereinafter, a third embodiment of the present invention will be described with reference to FIGS. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  FIG. 7 is a plan view showing the state of the vehicle cooling system support structure according to the present embodiment before and after the collision, and FIG. 8 is an enlarged plan view of the main part thereof, and FIG. Is a side view of the state before and after the collision. FIG. 10 shows a perspective view of the damager bracket 50 according to the present embodiment in an assembled state, and FIG. 11 shows a perspective view of the damager bracket 50 in a single product state.

  As shown in these drawings, this embodiment is characterized in that a damager bracket 50 as a rotational displacement means for connecting the radiator support 24 and the crash box 16 is joined to each member by arc welding. .

  Specifically, in the third embodiment, the damager bracket 50 is formed in a substantially L shape in a plan view, and the front portion 50A disposed in parallel to the main body portion 16A of the crash box 16 The rear portion 50B is arranged in parallel to the mounting portion 16B of the crash box 16. The front part 50A and the rear part 50B are both trapezoidal, more specifically, one line segment connecting the upper base (dimension A; see FIG. 11) and the lower base (dimension B> dimension A) is vertical and the other line segment is connected. Is formed in an inclined trapezoidal shape.

  On the other hand, as shown in FIG. 8, a load receiving portion 52 bent in a hook shape in a plan view is formed integrally (or separately) on the side portion 24 </ b> B of the radiator support 24. A base portion 52A of the load receiving portion 52 extends from the outer surface of the side portion 24B of the radiator support 24 toward the vehicle front side, and the bent portion 52B is disposed substantially parallel to the front bumper reinforcement 12.

  A rectangular flat plate-like mounting plate 54 is disposed in contact with the outer surface of the base 52A of the load receiving portion 52. On the outer surface of the front end portion of the mounting plate 54, weld nuts 56 are welded in advance at two locations, upper and lower. A mounting plate 54 is fixed to the outer surface of the base portion 52 </ b> A of the load receiving portion 52 with a bolt 58 and a weld nut 56.

  Further, the front portion 50A of the damager bracket 50 described above is disposed in contact with the outer surface of the rear end portion of the mounting plate 54, and arc welding is performed along the oblique side portion of the front portion 50A. The arc welded portion is indicated by reference numeral 60), and is joined to the outer surface of the rear end portion of the mounting plate 54. The rear portion 50B of the damager bracket 50 is disposed in contact with the rear side and the inner side portion of the mounting portion 16B of the crash box 16, and arc welding is performed along the oblique side portion of the rear portion 50B. The arc welded portion is indicated by reference numeral 62), and is joined to the rear side and the inner side portion of the mounting portion 16B. In FIG. 9, the arc welds 60 and 62 are simply illustrated by “x” marks such as spot welding.

  Next, the operation and effect of this embodiment will be described.

  The states shown in FIGS. 7A, 8A, and 9A are the states before the collision. During normal vehicle travel, the hood lock 20 disposed at the center of the upper end portion 24A of the radiator support 24 is engaged with the locked portion 22 provided on the back side of the front end portion of the hood 26, and the hood 26 Is kept closed.

  When a frontal collision occurs from this state, a collision load from the collision barrier 38 is input to the front bumper reinforcement 12. For this reason, the front bumper reinforcement 12 is displaced toward the vehicle rear side. Since the crash box 16 is interposed between the longitudinal end portion of the front bumper reinforcement 12 and the front end portion of the front side member 14, when the front bumper reinforcement 12 is displaced rearward, the crash box 16 is Axial compression deformation. Thereby, the collision energy at the time of frontal collision is absorbed.

  As shown in FIGS. 7B, 8B, and 9B, when the deformation stroke of the crash box 16 reaches a predetermined stroke, the front bumper reinforcement 12 is provided on both side portions 24B of the radiator support 24. It interferes with the bent portion 52B of the received load receiving portion 52. For this reason, the radiator support 24 is pressed to the vehicle rear side. As a result, a load toward the rear side of the vehicle is input to the damager bracket 40 that connects the mounting plate 54 of the side portion 24B of the radiator support 24 and the mounting portion 16B of the crash box 16. The damager bracket 50 is welded to the mounting plate 54 and the mounting portion 16B of the crash box 16 by arc welding, respectively. The arc welding portions 60 and 62 are loads on the vehicle rear side (arrow F in FIG. 8A). Since the bonding strength is weak for the load in the direction), the front portion 50A of the damager bracket 50 is separated from the mounting plate 54, and the rear portion 50B is separated from the mounting plate 16B.

  Here, since the damager bracket 50 is formed longer on the lower end side (lower bottom side) than on the upper end side (upper bottom side), the lower end side is displaced more greatly than the upper end side. . For this reason, the radiator support 24 and the cooling system 10 are rotationally displaced toward the vehicle rear side and the vehicle upper side around the engagement point of the hood lock 20 with the locked portion 22. As a result, according to the cooling system support structure for a vehicle according to the present embodiment, the cooling system 10 interferes with other parts and the cooling system 10 itself is damaged, or the hood 26, as in the first embodiment described above. Can be prevented from interfering with the cooling system 10 and being damaged as much as possible.

  Further, the damager bracket 50 according to the present embodiment also functions in the same manner as the damager bracket 28 according to the first embodiment described above. Therefore, the other effects described above in the first embodiment (the upper end of the damager bracket 50 are used). The effect that the cooling 10 can be smoothly rotated and displaced by making the lower end side longer than the side portion, and the load input from the damager bracket 50 causes damage such as deformation to the front side member 14. And the effect of easily optimizing the rotational displacement amount of the cooling system 10 with respect to the input load by adjusting the shape and dimensions of the damager bracket 50 are also obtained.

  Furthermore, it can be said that the cooling system support structure for a vehicle according to the present embodiment uses arc welding so that the joint strength in the load input direction at the time of a frontal collision becomes weak. Since the arc welding itself is performed in the body assembly process of the automobile, there is an advantage that the configuration can be established using the existing equipment. As a result, according to this embodiment, an increase in cost can be suppressed.

[Fourth Embodiment]
Hereinafter, a fourth embodiment of the present invention will be described with reference to FIGS. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  Each of the embodiments shown in FIGS. 12 to 15 is positioned as a variation of the displacement structure of the damager bracket to the vehicle rear side, and does not include a configuration for causing rotational displacement to the vehicle upper side. Therefore, the configuration of the other embodiment is added to the configuration of the rotational displacement toward the vehicle upper side.

  The damager bracket 70 shown in FIG. 12 is a suitable example as an alternative to the damager bracket 50 of the third embodiment described above in terms of shape. The damager bracket 70 is similar to the damager bracket 50 of the third embodiment described above in that it includes a front part 70A and a rear part 70B and is formed in an L shape in plan view. The arcuate openings 72 are formed at two locations, and further, spot welding is performed immediately below the respective openings 72, which is different from the damager bracket 50 of the third embodiment described above. Incidentally, in the case of the damager bracket 70, the rear part 70B is joined to the inner side part of the attachment part 16B of the crash box 16 by the spot welded part 74, and the front part 70A is attached according to the above-described third embodiment. It is joined to the plate 54.

  According to the above configuration, since the arc-shaped opening 72 is formed on the upper side of the spot welded portion 74, the strength around the upper portion of the spot welded portion 74 is lowered. For this reason, when the load at the time of a frontal collision is input to the damager bracket 70, the periphery of the opening 72 is likely to be deformed, and the spot weld 74 is easily peeled off accordingly. As a result, the radiator support 24 by the damager bracket 70 and, consequently, the displacement of the cooling system 10 toward the vehicle rear side is established.

  Moreover, since the damager bracket 70 is joined to the attachment part 16B of the crash box 16 by spot welding, the intrinsic joining strength of this part is high. Therefore, there is an advantage that the holding power of the cooling system 10 can be sufficiently secured during normal vehicle travel. That is, during normal vehicle travel, most of the load input to the damager bracket 70 is the load on the vehicle lower side. In this embodiment, the opening 72 is set on the upper side of the spot welded portion 74. It is possible to prevent the holding power of the system 10 from decreasing.

  In the embodiment shown in FIGS. 13A and 13B, a damager bracket 76 formed in an L shape in plan view is used instead of the damager bracket 50 and the mounting plate 54 of the third embodiment described above. The front end portion of the front portion 76A is fastened to the base portion 52A of the load receiving portion 52 with a weld nut 56 and a bolt 58, and the rear portion 76B is welded to the attachment portion 16B of the crash box 16.

  According to the above configuration, as shown in FIG. 13B, as the axial compression deformation of the main body portion 16A of the crash box 16 proceeds during a frontal collision, the meat of the front portion 76A having a long length in the vehicle front-rear direction becomes the rear portion. The front portion 76A of the damager bracket 76 is plastically deformed so as to move (circulate) to the 76B side.

  14 and 15, the mounting portion 16B of the crash box 16 is extended inward in the vehicle width direction to the rear side of the side portion 24B of the radiator support 24 (hereinafter referred to as “extension portion 78”). The cylindrical damager crush box 80 whose longitudinal direction is the vehicle vertical direction is disposed between the extension 78 and the rear surface of the side 24B of the radiator support 24. The front end portion 80A of the damager crush box 80 is joined to the rear surface of the side portion 24B of the radiator support 24, and the rear end portion 80B is joined to the extension portion 78. Further, a triangular support wall 82 is provided between the rear surface of the extension 78 and the inner side surface of the front side member 14 in plan view.

  Further, a constricted portion 84 is integrally formed at an intermediate portion in the vehicle front-rear direction when the damager crush box 80 is assembled. Therefore, the damager crush box 80 has a low yield strength at the constricted portion 84 with respect to a load in the longitudinal direction of the vehicle, and is provided with a function serving as a starting point of plastic deformation.

  According to the above configuration, in addition to the function of displacing the radiator support 24 and the cooling system 10 to the rear side of the vehicle by compressive buckling deformation of the damager crash box 80 at the time of a frontal collision, the damager crash box 80 is compressed seated at that time. Energy absorption performance is enhanced by bending and deforming.

[Fifth Embodiment]
Hereinafter, a fifth embodiment of the present invention will be described with reference to FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 16, this embodiment is characterized in that a control bracket 90 as a restricting means is provided in the configuration of FIG. 13 of the fourth embodiment described above.

  Specifically, a trapezoidal control bracket 90 is fixed to the inner side surface of the front side member 14 on the front end side in a side view. The front end surface of the control bracket 90 is an inclined surface 90A whose distance from the rear end surface is reduced as it goes from the upper edge side to the lower edge side. The inclination angle of the inclined surface 90A is determined by how much the radiator support 24 is rotationally displaced toward the vehicle rear side and the vehicle upper side.

  Next, the operation and effect of this embodiment will be described.

  When the crash box 16 is axially compressed and deformed due to the displacement of the front bumper reinforcement 12 toward the vehicle rear side at the time of a frontal collision, the damager bracket 76 is displaced while being plastically deformed toward the vehicle rear side.

  When the displacement of the damager bracket 76 toward the rear side of the vehicle proceeds, the rear end portion of the damager bracket 76 first interferes with the upper end side of the inclined surface 90A of the control bracket 90, and further displacement toward the rear side of the vehicle is restricted. Is done. If a collision load on the rear side of the vehicle is input to the damager bracket 76, the damager bracket 76 is tilted along the inclined surface 90A of the control bracket 90, and the radiator support 24 is moved to the rear side and the upper side of the vehicle. Rotate and displace.

  As described above, in the cooling system support structure for a vehicle according to the present embodiment, the control bracket 90 is provided on the front side member 14, and the displacement of the damager bracket 76 toward the vehicle rear side advances to the control bracket 90. Prevents further rotation to the rear side of the vehicle and the upper side of the vehicle, so that the radiator support 24 is prevented from excessively rotating and interfering with other parts (engine parts, etc.). it can.

  In this embodiment, the damager bracket 76 is disposed so as to interfere with the control bracket 90. However, the present invention is not limited to this, and the control bracket may directly interfere with the side portion 24B of the radiator support 24.

  In the above description, since the operation and effect of the present embodiment has been described based on the operation of FIG. 13, the damager bracket 76 is first displaced toward the rear side of the vehicle, and then the inclined surface of the control bracket 90. Although it has been described that the damager bracket 76 interferes with 90A and is rotationally displaced to the upper side of the vehicle, if a restricting means is added to the configuration up to the third embodiment described above, the restricting means can be a radiator support or a vehicle rear side of the damager bracket. And it supplements that it becomes the operation | movement which interferes at the time of rotational displacement to the vehicle upper side, and regulates the movement stroke.

[Sixth Embodiment]
Hereinafter, the sixth embodiment of the present invention will be described with reference to FIGS. 17 and 18. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 17 and 18, this embodiment is characterized in that the shape of the damager crush box 80 of FIG. 14 of the fourth embodiment described above is changed to a substantially trapezoidal shape in a side view.

  Specifically, the damage crush box 94 of this embodiment is formed in a trapezoidal shape in a side view, the front end portion 94A is an inclined surface, and the rear end portion 94B is a vertical surface. The front end portion 94A is joined to the rear surface of the side portion 24B of the radiator support 24, and the rear end portion 90B is joined to the extension portion 78 of the mounting portion 16B of the crash box 16.

  Further, a constricted portion 96 is integrally formed at an intermediate portion in the vehicle longitudinal direction when the damager crash box 94 is assembled. Therefore, the damager crush box 94 is made rigid at the constricted portion 96 with respect to the load in the longitudinal direction of the vehicle, and is given a function as a starting point of deformation.

  According to the above configuration, the state shown in FIG. 18A is the state before the collision. In this state, the radiator support 24 is held in a tilted state due to the shape of the damager crash box 94. When a frontal collision occurs from this state, as shown in FIG. 18B, a collision load toward the rear side of the vehicle is input to the damager crash box 94. For this reason, the damager crush box 94 causes compression buckling deformation starting from the constricted portion 96. At this time, since the damager crush box 94 is formed in a trapezoidal shape in a side view, the amount of plastic deformation is larger on the lower bottom side than on the upper bottom side. Thereby, the radiator support 24 and the cooling system 10 are rotationally displaced toward the vehicle rear side and the vehicle upper side.

  Similarly to the damage crush box 80 shown in FIG. 14, the damage crush box 94 can be compressed and buckled to absorb energy at the time of a frontal collision.

[Seventh Embodiment]
Hereinafter, the seventh embodiment of the present invention will be described with reference to FIGS. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 19 to 21, this embodiment is characterized in that a separation bracket 100 is used as a main part of the rotational displacement means.

  More specifically, a mounting bracket 102 formed in an L shape in front view is disposed on the upper surface of the front end portion of the front side member 14. The vertical portion 102 </ b> A of the mounting bracket 102 is fixed to the upper portion of the side portion 24 </ b> B of the radiator support 24 with a fixing tool such as a bolt 104 and a nut 106. On the other hand, the horizontal portion 102B of the mounting bracket 102 is joined to the upper surface of the front end portion of the front side member 14 by welding. Note that flanges are raised on both sides of the vertical portion 102A and the horizontal portion 102B.

  Between the lower part of the vertical part 102A of the mounting bracket 102 and the side part 24B of the radiator support 24, an upper part of the detachable bracket 100 formed in a substantially rectangular flat plate shape is sandwiched. As shown in FIG. 21, a load receiving portion 108 formed by bending is integrally formed at the lower portion of the front end of the separation bracket 100. The load receiving portion 108 protrudes from the general portion of the detachment bracket 100 by a predetermined amount toward the vehicle front side, and is disposed so as to contact the front bumper reinforcement 12 at the time of a frontal collision.

  Further, a U-shaped notch 110 is formed in the upper part of the front end of the release bracket 100. The notch 110 is notched with the vehicle front-rear direction as the notch direction, and is attached to the bent portion 16B ′ of the attachment portion 16B of the crash box 16 with a bolt 112 and a nut 114 at the end portion of the notch 110. Accordingly, when a load on the vehicle rear side that is equal to or greater than a predetermined value is input to the fastening portion, the detachment bracket 100 is pulled out to the vehicle rear side.

  The mounting bracket 102, the detaching bracket 100, the bolt 104, and the nut 106 in the above configuration correspond to the rotational displacement means in the present invention.

  Next, the operation and effect of this embodiment will be described.

  The state shown in FIGS. 19 and 20 is the state before the collision. In this state, the separation bracket 100 is in a state of being fastened to the bent portion 16B ′ of the attachment portion 16B of the crash box 16, that is, in a state of not being detached.

  When a frontal collision occurs from this state, the body 16A of the crash box 16 is axially deformed by being pushed by the front bumper reinforcement 12. When the deformation stroke of the crash box 16 reaches a predetermined stroke, the front bumper reinforcement 12 comes into contact with the load receiving portion 108 of the release bracket 100. For this reason, the detachment bracket 100 is pressed toward the rear side of the vehicle, and the detachment bracket 100 is detached from the fastening portion when the fastening torque to the bent portion 16B ′ of the mounting portion 16B of the crash box 16 is exceeded. Thereafter, as the axial compression deformation of the main body portion 16A of the crash box 16 proceeds, the radiator support 24 moves toward the vehicle rear side and the vehicle upper side around the fastening point P (bolt 104 and nut 106) of the vertical portion 102A of the mounting bracket 102. It is rotationally displaced. Note that the positional relationship and the dimensional relationship of each part are set so that when the radiator support 24 is rotationally displaced about the fastening point P, the radiator support 24 is equivalent to the rotational displacement of the hood lock 20 about the engagement point. As a result, according to the cooling system support structure for a vehicle according to the present embodiment, the cooling system 10 interferes with other parts and the cooling system 10 itself is damaged, or the hood 26 interferes with the cooling system 10 and is damaged. It is possible to avoid receiving as much as possible.

[Eighth Embodiment]
Hereinafter, the eighth embodiment of the present invention will be described with reference to FIGS. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 22 to 24, in this embodiment, the radiator support 120 is divided into a radiator support upper 122 and a radiator support lower 124. The lower end portion of the radiator support upper 122 and the upper end portion of the radiator support lower 124 are connected to each other by two damager brackets 126. In the state after the connection, the radiator support lower 124 is inclined backward by a predetermined angle with respect to the radiator support upper 122.

  The radiator support 120 is attached to the body side at the lower side of both sides of the radiator support upper 122 (the attachment point to the body is indicated by reference numeral “127”). The cooling system 10 is mainly supported by the radiator support lower 124 in a rearwardly inclined state, and the upper end portion of the cooling system 10 is fixed to the radiator support upper 122 via a bracket 129.

  Further, as shown in FIG. 24, each damager bracket 126 is formed in a trapezoidal shape in a side view, and a constricted portion 128 is formed in an intermediate portion in the longitudinal direction. Therefore, the damager bracket 126 has a reduced rigidity against load input in the vehicle front-rear direction at the position where the constricted portion 128 is formed.

  Next, the operation and effect of this embodiment will be described.

  The state shown in FIG. 23A is the state before the collision. In this state, due to the shape of the damager bracket 126, the radiator support lower 124 is held in a state where the radiator support lower 124 is tilted backward by a predetermined angle with respect to the radiator support upper 122.

  When a frontal collision occurs from this state, the radiator support lower 124 is pressed to the vehicle rear side by the front bumper reinforcement 12. As a result, a load toward the vehicle rear side is input to the damager bracket 126, and the damager bracket 126 is buckled in the vehicle front-rear direction as shown in FIG. As a result, the radiator support lower 124 is rotationally displaced until it becomes substantially parallel to the radiator support upper 122. Therefore, also with the cooling system support structure for a vehicle according to the present embodiment, the cooling system 10 interferes with other parts and the cooling system 10 itself is damaged, or the hood 26 interferes with the cooling system 10 and is damaged. Can be avoided as much as possible.

[Ninth Embodiment]
The ninth embodiment of the present invention will be described below with reference to FIGS. 25 and 26. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 25 and FIG. 26, this embodiment is characterized in that the radiator support 130 is formed in a "<" shape that is opposite to the left and right in a side view.

More specifically, the radiator support 130 includes a radiator support upper portion 132 arranged along the vehicle vertical direction, and a radiator support lower portion 134 bent from the lower end portion of the radiator support upper portion 132 toward the vehicle front side. ing. A V-shaped notch 136 is formed on the rear side of the boundary between the radiator support upper part 132 and the radiator support lower part 134. Further, an interference bracket 138 as a load receiving portion formed in a block shape is attached to the front upper portion on both sides of the radiator support lower portion 134. When viewed in a side view, the bracket 138 is disposed in a state of protruding toward the vehicle front side from the radiator support lower portion 134.

  The cooling system 10 is supported by a mount 140 on the lower edge of the radiator support lower part 134.

  Next, the operation and effect of this embodiment will be described.

  The state shown in FIG. 26A is the state before the collision. In this state, the radiator support lower portion 134 is disposed in a state of being inclined rearward with respect to the radiator support upper portion 132.

  When a frontal collision occurs from this state, the brackets 138 set on both sides of the radiator support lower part 134 are pressed toward the vehicle rear side by the front bumper reinforcement 12. For this reason, stress concentration occurs in the formation site of the reduced-strength notch 136, and the radiator support lower portion 134 is rotationally displaced toward the radiator support upper portion 132 side toward the rear side of the vehicle and toward the upper side of the vehicle so that the notch 136 is closed. . Therefore, also with the cooling system support structure for a vehicle according to the present embodiment, the cooling system 10 interferes with other parts and the cooling system 10 itself is damaged, or the hood 26 interferes with the cooling system 10 and is damaged. Can be avoided as much as possible.

  Further, the radiator support 130 according to the present embodiment does not have a vertically divided structure as in the above-described eighth embodiment, so that there is an advantage that shape stability can be obtained. Further, since the number of parts is reduced, the cost can be reduced.

  In this embodiment, the notch 136 is formed on the rear side surface of the radiator support 120. However, the present invention is not limited to this, and any configuration can be applied as long as the function as a low strength portion can be obtained. For example, it is possible to employ various configurations such as a configuration in which a thin portion is set instead of the notch 136 and a configuration in which a hole is formed.

[Tenth embodiment]
The tenth embodiment of the present invention will be described below with reference to FIGS. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in these drawings, this embodiment is characterized in that the fastening state of the radiator support 140 to the vehicle body side is released using the damager bracket 142.

  Specifically, as shown in FIG. 27, the attachment portion 16B disposed at the rear end portion of the main body portion 16A of the crash box 16 is formed in an L shape in a plan view, The end portion is bent toward the vehicle rear side to form a bent portion 16B ′. On the other hand, the side portion 140A of the radiator support 140 is formed in an L shape in a plan view, and is erected in contact with the inner surface of the bent portion 16B 'of the crash box 16 along the vehicle longitudinal direction. Further, at the center of the front end of the side portion 140A of the radiator support 140, a protruding portion 140A 'that protrudes a predetermined length toward the vehicle front side is integrally formed.

  Further, a damager bracket 142 formed in a plate arm shape is disposed on the inner side of the side portion 140A of the radiator support 140 (a position overlapping the protruding portion 140A '). The base end portion 142A of the damager bracket 142 is disposed in contact with the vicinity of the intermediate portion in the height direction of the inner surface of the side portion 140A of the radiator support 140. Further, the tip end portion 142B of the damager bracket 142 extends in parallel along the main body portion 16A of the crash box 16 toward the vehicle front diagonally upward side. The front end portion 142B of the damager bracket 142 is located on the vehicle front side with respect to the front end of the side portion 140A of the radiator support 140 and located on the vehicle rear side with respect to the rear surface of the front bumper reinforcement 12.

  A slit 144 (see FIG. 28) cut from the rear end edge side to the vehicle front side is formed at an intermediate portion in the height direction of the bent portion 16B ′ of the crash box 16. Correspondingly, a bolt insertion hole 146 (see FIG. 29) is formed in the side portion 140A of the radiator support 140 at a position where it overlaps with the slit 144. Further, a bolt insertion hole 148 (see FIG. 29) is formed on the base end portion 142A of the damager bracket 142 on the same axis as the bolt insertion hole 146 formed in the radiator support 140. Then, the mounting bolt 150 is inserted into the bolt insertion holes 148 and 146 and the slit 144 from the inner side in the vehicle width direction of the damager bracket 142 in this order, and screwed with the nut 152 on the outer surface of the bent portion 16B ′ of the crash box 16. Thus, the damager bracket 142 and the side portion 140A of the radiator support 140 are attached to the bent portion 16B ′ of the attachment portion 16B of the crash box 16. Further, after the mounting bolt 150 is screwed into the nut 152, the periphery of the head 150 </ b> A of the mounting bolt 150 is welded to the inner side surface of the base end portion 142 </ b> A of the damager bracket 142 with a predetermined welding strength. This welding strength determines the rotation start torque of the damager bracket 142.

  In the above configuration, the damager bracket 142, the slit 144, the mounting bolt 150, and the nut 152 correspond to the rotational displacement means in the present invention.

  Next, the operation and effect of this embodiment will be described.

  The state shown in FIG. 29 (A) and FIG. 30 (A) is the state before the collision. In this state, the tip end portion 142B of the damager bracket 142 is positioned between the front end of the mounting portion 16B 'of the crash box 16 and the rear surface of the front bumper reinforcement 12 toward the vehicle front obliquely upward side.

  When the front bumper reinforcement 12 is displaced to the vehicle rear side from this state at the time of a frontal collision, the main body portion 16A of the crash box 16 is axially deformed by deformation. When the axial compression deformation stroke of the main body portion 16 </ b> A of the crash box 16 reaches a predetermined stroke, the rear surface of the front bumper reinforcement 12 comes into contact (interference) with the upper side of the front side surface 142 </ b> C of the damager bracket 142. When the displacement of the front bumper reinforcement 12 further proceeds toward the vehicle rear side, the front side surface 142C of the damager bracket 142 is moved toward the vehicle rear side by the rear surface of the front bumper reinforcement 12 as shown in FIG. Pressed. Thereby, a rotational torque in the bolt loosening direction acts on the head 150A of the mounting bolt 150 integrated with the damager bracket 142 by welding, and the mounting bolt 150 is in the state shown in FIG. 30B by the damager bracket 142. It is rotated by a predetermined amount clockwise (in the direction of arrow A in FIG. 30B). As a result, the welded portion 154 is broken, the mounting bolt 150 is loosened, and the fastening state between the mounting bolt 150 and the nut 152 is forcibly released.

  Thereafter, as shown in FIGS. 29B and 30C, when the fixed state of the side portion 140A of the radiator support 140 to the vehicle body side is released, the protruding portion of the radiator support 140 by the front bumper reinforcement 12 140A ′ is pressed to the rear side of the vehicle, the mounting bolt 150 is detached from the slit 144 formed in the bent portion 16B ′ of the crash box 16, and the radiator support 140 and the cooling system 10 are located on the rear side of the vehicle with the hood lock 20 as the center. It is rotationally displaced toward the vehicle upper side (arrow B direction side in FIG. 30C).

  Therefore, also with the cooling system support structure for a vehicle according to the present embodiment, the cooling system 10 interferes with other parts and the cooling system 10 itself is damaged, or the hood 26 interferes with the cooling system 10 and is damaged. Can be avoided as much as possible.

  In addition, during normal vehicle travel, the head 150A of the mounting bolt 150 is fixed to the side surface of the damager bracket 142 by welding, so that the mounting bolt 150 is unintentionally loosened even when an external force such as vehicle body vibration is applied. There is no change in the separation load due to rusting of the mounting bolt 150. Therefore, according to the present embodiment, the radiator support 140 can be stably detached from the vehicle body side at the time of a frontal collision.

It is a top view which shows the whole structure of the cooling system support structure for vehicles which concerns on 1st Embodiment, (A) is a top view which shows the state before a collision, (B) is a top view which shows the state after a collision. (A) is a side view schematically illustrating the state around the cooling unit before the collision, and (B) is a side view schematically illustrating the state around the cooling unit after the collision. FIG. 3 is a perspective view of the damager bracket shown in FIGS. 1 and 2. It is a top view which shows the whole structure of the cooling system support structure for vehicles which concerns on 2nd Embodiment, (A) is a top view which shows the state before a collision, (B) is a top view which shows the state after a collision. (A) is a side view schematically illustrating the state around the cooling unit before the collision, and (B) is a side view schematically illustrating the state around the cooling unit after the collision. FIG. 6 is a perspective view of the damager bracket shown in FIGS. 4 and 5. It is a top view which shows the whole structure of the cooling system support structure for vehicles which concerns on 3rd Embodiment, (A) is a top view which shows the state before a collision, (B) is a top view which shows the state after a collision. It is an enlarged plan view which shows the state before and behind the collision which expanded the principal part of FIG. (A) is a side view schematically illustrating the state around the cooling unit before the collision, and (B) is a side view schematically illustrating the state around the cooling unit after the collision. FIG. 10 is a perspective view of an assembled state of the damager bracket shown in FIGS. 7 to 9. It is a perspective view which shows the damager bracket shown by FIG. It is a perspective view which concerns on 4th Embodiment and shows the 1st modification of a damager bracket. It is a top view which shows the 2nd modification of a damager bracket concerning 4th Embodiment, (A) is a top view which shows the state before a collision, (B) is a top view which shows the state after a collision. . It is a perspective view which concerns on 4th Embodiment and shows the 3rd modification of a damager bracket. It is a top view which shows the assembly | attachment state of the damager bracket shown by FIG. 14, (A) is a top view which shows the state before a collision, (B) is a top view which shows the state after a collision. (A) is a top view which shows the whole structure of the cooling system support structure for vehicles which concerns on 5th Embodiment in the state after a collision, (B) is a side view which shows the state after the collision of the said cooling system support structure for the said vehicle FIG. FIG. 15 is a perspective view showing a modification of the damage crush box of FIG. 14 according to the sixth embodiment. (A) is a side view schematically illustrating the state around the cooling unit before the collision, and (B) is a side view schematically illustrating the state around the cooling unit after the collision. It is a perspective view which shows the principal part of the cooling system support structure for vehicles which concerns on 7th Embodiment in an assembly state. FIG. 20 is a plan view showing the vehicle cooling system support structure shown in FIG. 19 in a state before a collision. FIG. 20 is a perspective view showing the release bracket shown in FIG. 19. It is a perspective view showing the whole cooling system support structure for vehicles concerning an 8th embodiment. FIG. 9A is a side view schematically illustrating a state around a cooling unit before a collision, and FIG. 9B is a side view schematically illustrating a state around a cooling unit after a collision according to the eighth embodiment. It is. It is a perspective view of the damager bracket shown by FIG. It is a perspective view which shows the whole structure of the cooling system support structure for vehicles which concerns on 9th Embodiment. FIG. 9A is a side view schematically illustrating a state around a cooling unit before a collision, and FIG. 9B is a side view schematically illustrating a state around a cooling unit after a collision according to the ninth embodiment. It is. It is a perspective view showing the whole cooling system support structure for vehicles concerning a 10th embodiment. It is the perspective view which expanded the crush box shown by FIG. It is a top view which shows the whole structure of the cooling system support structure for vehicles which concerns on 10th Embodiment, (A) is a top view which shows the state before a collision, (B) is a top view which shows the state after a collision. 10A is a side view schematically illustrating a state around a cooling unit before a collision, and FIG. 10B is a schematic view illustrating a state around the cooling unit in the middle of a collision according to the tenth embodiment. It is a side view, (C) is the side view which drawn the state around the cooling part after a collision typically.

Explanation of symbols

10 Cooling system 12 Front bumper reinforcement 14 Front side member 16 Crash box 20 Hood lock 22 Locked part 24 Radiator support
24B side portion 26 Hood 28 Damager bracket (rotational displacement means)
28C Intermediate part (plastic deformation part)
38 Collision barrier 40 Damager bracket (rotational displacement means)
40C Intermediate part (plastic deformation part)
50 Damager bracket (rotational displacement means)
52 Load receiving portion 60 Arc welded portion 62 Arc welded portion 70 Damager bracket (rotational displacement means)
76 Damager bracket (rotational displacement means)
80 Damager crush box (rotational displacement means)
90 Control bracket (regulation means)
94 Damager Crash Box (Rotary displacement means)
100 Detachment bracket (rotational displacement means)
102 Mounting bracket (rotational displacement means)
104 bolts (rotational displacement means)
106 Nut (rotational displacement means)
108 Load receiving portion 120 Radiator support 122 Radiator support upper 124 Radiator support lower 126 Damager bracket (connecting member, rotational displacement means)
130 Radiator support 132 Radiator support upper part 134 Radiator support lower part
136 Notch (low strength part)
138 Interference bracket (load receiving part)
140A side 142 damager bracket (rotational displacement means)
144 Slit (Rotational displacement means)
150 Mounting bolt (rotational displacement means)
152 Nut (rotational displacement means)

Claims (8)

A cooling system support structure for a vehicle that supports a cooling system arranged on the vehicle rear side of the front bumper reinforcement and on the lower side of the front portion of the hood on a vehicle body side via a radiator support configured in a substantially frame shape,
At a predetermined position on the upper end side of the radiator support, a hood lock that is locked to a locked portion provided on the back side of the front portion of the hood when the hood is closed and holds the hood in a closed state is disposed .
Between the both ends of the longitudinal direction of the front bumper reinforcement and the front ends of a pair of left and right front side members arranged on both sides of the front part of the vehicle with the longitudinal direction of the vehicle as a longitudinal direction, a load input at the time of a frontal collision is applied. Crash boxes that can be axially deformed are interposed,
Further, the side portion of the radiator support or the load receiving portion attached to the side portion in a side view is disposed on the vehicle front side with respect to the cooling system, and is spaced apart on the vehicle rear side of the front bumper reinforcement. Has been
When the front bumper reinforcement is displaced to the vehicle rear side at the time of a frontal collision, the side of the radiator support or the load receiving portion is pressed to the vehicle rear side by compressing and deforming the predetermined stroke shaft, and the hood lock is the center. Rotational displacement means for rotationally displacing the cooling system to the vehicle rear side and the vehicle upper side;
A cooling system support structure for a vehicle. The rotational displacement means is adjusted for displacement so that the rotational displacement amount on the lower end side of the radiator support is larger than the rotational displacement amount on the upper end side of the radiator support.
The cooling system support structure for a vehicle according to claim 1. The rotational displacement means is constituted by a bracket made of a plate-like member having one end coupled to the radiator support and the other end coupled to a mounting portion to the front side member of the crash box.
The vehicle cooling system support structure according to claim 1 or 2, wherein the vehicle cooling system support structure is provided. The bracket is interposed between a radiator support and a crash box, and includes a plastic deformation portion that expands or contracts in the load input direction by a load input to the radiator support.
The cooling system support structure for a vehicle according to claim 3. The bracket is interposed between the radiator support and the crash box, and is attached to the radiator support at the one end that is the coupling portion to the radiator support and the other end that is the coupling portion to the mounting portion of the crash box. Each arc weld that is the starting point of relative displacement is set,
The cooling system support structure for a vehicle according to claim 3. The radiator support is divided into a radiator support upper that constitutes the upper part and a radiator support lower that constitutes the lower part.
The rotational displacement means normally connects the radiator support lower to the radiator support upper so that the radiator support lower is inclined at a predetermined angle, and deforms itself when a load at the time of a frontal collision is input to the radiator support lower. The radiator support lower is a connecting member that rotationally displaces the radiator support lower to the vehicle rear side so that the inclination angle of the radiator support lower with respect to the radiator support upper decreases.
The vehicle cooling system support structure according to claim 1 or 2, wherein the vehicle cooling system support structure is provided. The radiator support has a lower portion bent toward the vehicle rear side with respect to the upper portion,
The rotational displacement means is provided at the bent part of the upper part and the lower part, and the lower part of the vehicle is arranged so that the inclination angle of the lower part with respect to the upper part decreases with the load at the time of frontal collision being input to the lower part. It is a low-strength part that rotates and displaces backward,
The vehicle cooling system support structure according to claim 1 or 2, wherein the vehicle cooling system support structure is provided. The front side member is provided with a restricting means that interferes with the radiator support or the rotational displacement means when the radiator support rotates a predetermined amount around the hood lock and prevents further rotation.
The cooling system support structure for a vehicle according to any one of claims 1 to 7.

Images