JP2007245920A - Front part structure for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent hot air released from an engine or the like in an engine room from being blown back to the front side of a heat exchanger, to reduce the number of parts and to reduce man-hours when a front part of an automobile is assembled, in a front part structure of the automobile. <P>SOLUTION: The front part structure of the automobile is provided with a shroud 1 arranged at a front part of the engine room and supporting the heat exchanger; a bumper face arranged at the front end of the automobile and having an opening for introducing traveling air positioned at the front side of the heat exchanger; and a bumper mesh member 20 having a peripheral edge mounted to the peripheral edge of the opening of the bumper face. The bumper mesh member 20 is integrally formed of a mesh body 21 having a plurality of ventilation holes 22 formed on an inner portion of the peripheral edge and a pair of vertical wall-like seal walls 30 extending from both right and left ends of the mesh body 21 toward a rear side. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a front structure of an automobile, and more particularly, to a bumper mesh member integrally formed with a vertical wall-like seal wall portion for preventing blowback of hot air discharged from an engine, a heat exchanger or the like.

  Generally, a heat exchanger such as a radiator for cooling engine cooling water or a condenser for cooling refrigerant of an air conditioner is provided at the front of an engine room of an automobile, and these heat exchangers are supported by a shroud. A bumper mesh member for introducing a running wind is provided on the bumper face in the vicinity of the front side of the shroud. The shroud is formed in a rectangular frame shape by a shroud upper, a shroud drawer, and a pair of left and right shroud sides, and is disposed near the rear side of the bumper face and supported and attached to the front portion of the vehicle.

  By the way, if the hot air released from the engine or the like in the engine room flows forward and travels back through the gap between the shroud side and the bumper face while the vehicle is running, There is a problem that the temperature of the passing air rises and the cooling capacity of the heat exchanger decreases. In view of this, there is a type in which a vertical wall is provided between the shroud and the bumper face to prevent the hot air released from the engine or the heat exchanger from blowing back to the front of the heat exchanger.

For example, Patent Document 1 discloses a vehicle body front structure in which a pair of guide portions extending to the rear surface of a bumper face are attached to the front sides of a pair of left and right shroud sides, respectively, and a pair of left and right shroud sides and a bumper face are disclosed. By attaching a pair of guide portions between the two, the gap between the shroud side and the bumper face is eliminated, and hot air released from the engine or the like is prevented from flowing into the front space of the heat exchanger.
JP 2005-153612 A

  However, the vehicle body front part structure of Patent Document 1 is a structure in which a pair of guide parts are respectively attached to a pair of left and right shroud sides, so that the number of parts increases and the front part of the automobile is assembled. Man-hours increase.

  An object of the present invention is to prevent hot air released from an engine or the like in an engine room from blowing back to the front of a heat exchanger in a front structure of an automobile, reduce the number of parts, and assemble the front part of the automobile. Reducing the number of man-hours.

  The front structure of an automobile according to claim 1 is a shroud disposed in front of an engine room and supporting a heat exchanger in the front structure of an automobile, wherein a shroud door upper, a shroud drawer, and a pair of shroud sides A shroud comprising: a bumper face disposed at a front end portion of an automobile and disposed in front of the heat exchanger; an opening for introducing a traveling wind is formed; and a peripheral edge portion is attached to a peripheral edge of the opening of the bumper face. A bumper mesh member, and the bumper mesh member extends rearward from left and right end portions of the mesh main body portion and a mesh main body portion having a plurality of air holes formed in an inner portion of the peripheral edge portion. It has a pair of vertical wall-like seal wall portions.

  The front structure of the automobile includes a shroud, a bumper face, and a bumper mesh member. The bumper mesh member includes a mesh main body portion having a plurality of ventilation holes formed in an inner portion of the peripheral edge portion, and a mesh main body portion. It is comprised from a pair of vertical wall-shaped seal wall part extended toward back from the right-and-left both ends. While the car is running, the hot air discharged from the engine in the engine room flows forward, but the heat is blocked by the bumper mesh member seal wall so that it does not flow to the front side of the shroud. It flows out towards. Therefore, the hot air discharged from the engine or the like does not blow back to the front of the heat exchanger through between the shroud side and the bumper face.

  The front structure of an automobile according to claim 2 is characterized in that, in the invention of claim 1, the bumper mesh member is provided with ribs that are continuously formed over the mesh body and the seal wall. To do.

  The front structure of an automobile according to claim 3 is the invention according to claim 1 or 2, wherein the bumper mesh member has a vehicle width direction width substantially the same as a vehicle width direction width of the heat exchanger, and the seal wall portion Is characterized by being inclined with respect to the front-rear direction.

  According to a fourth aspect of the present invention, there is provided a front structure for an automobile. It is characterized by that.

  According to a fifth aspect of the present invention, there is provided a front structure of an automobile. In the invention of the fourth aspect, a pipe member of a vehicle part is disposed transversely between a rear end of the seal wall and the shroud, and the seal wall is The rear end is formed so as to be located outside the shroud side in the vehicle width direction.

  A front structure of an automobile according to a sixth aspect is the invention according to the first to fifth aspects, wherein the bumper mesh member is made of a synthetic resin material.

  According to the first aspect of the present invention, the bumper mesh member includes a bumper mesh member having a peripheral edge attached to the periphery of the opening of the bumper face, and the bumper mesh member has a plurality of air holes formed in an inner portion of the peripheral edge. Since it has a mesh main body and a pair of vertical wall-like seal walls extending rearward from the left and right ends of the mesh main body, when hot air discharged from the engine or the like in the engine room flows forward The hot air can be blocked by the seal wall portion of the bumper mesh member so as not to flow into the front side of the shroud, and can be prevented from blowing back to the front of the heat exchanger. In addition, the number of parts can be reduced by integrally forming the seal wall part on the bumper mesh member, and the number of steps for assembling the front part of the automobile can be reduced.

  According to the invention of claim 2, since the rib formed continuously over the mesh main body portion and the seal wall portion is provided on the bumper mesh member, the rigidity of the seal wall portion can be increased. It is possible to suppress chatter vibration of the seal wall portion caused by running wind introduced from the opening of the bumper face during running.

  According to the invention of claim 3, the bumper mesh member has a vehicle width direction width substantially the same as the vehicle width direction width of the heat exchanger, and the seal wall portion is formed in an inclined shape with respect to the front-rear direction. When the bumper mesh member moves backward together with the bumper face and the rear end of the seal wall comes into contact with the shroud side at the time of the collision of the automobile, the bending of the seal wall is promoted and the shroud side is not easily damaged.

  According to the invention of claim 4, the seal wall portion is formed to be inclined with respect to the front-rear direction so as to move outward in the vehicle width direction as it moves from the front end to the rear end. The seal wall portion is not located at a position corresponding to the opening. Therefore, even when outside air is smoothly introduced from the opening of the bumper face and the bumper mesh member having the seal wall portion is attached to the bumper face, the cooling capacity of the heat exchanger does not decrease.

  According to the invention of claim 5, the pipe member of the vehicle part is disposed transversely between the rear end of the seal wall portion and the shroud, and the rear end of the seal wall portion is located outside the shroud side in the vehicle width direction. Since the pipe member is sandwiched between the rear end of the seal wall and the shroud side and the pipe member is prevented from being damaged when the seal wall is retracted at the time of an automobile collision, the pipe member is prevented from being damaged. Can do.

  According to the invention of claim 6, since the bumper mesh member is made of a synthetic resin material, the shroud side is unlikely to be damaged when the seal wall portion comes into contact with the shroud side at the time of an automobile collision.

  The front structure of the automobile of the present invention includes a shroud that is disposed at the front of the engine room and supports the heat exchanger, and a traveling wind introduction that is disposed at the front end of the automobile and is located in front of the heat exchanger. A bumper face having an opening, and a peripheral edge is attached to the periphery of the opening of the bumper face, and is formed to be inclined with respect to the front-rear direction so as to move outward in the vehicle width direction as it moves from the front end to the rear end. The bumper mesh member includes a mesh main body portion having a plurality of ventilation holes formed in an inner portion of the peripheral edge portion, and a vertical extending from the left and right end portions of the mesh main body portion toward the rear. It has a pair of wall-like seal walls.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 to 7, the front structure of an automobile has a rectangular frame-shaped shroud 1 made of a synthetic resin disposed in the front part of an engine room and front end parts of a pair of left and right front side frames. A bumper reinforcement 5 fixedly connected to the crash can fixed to the vehicle and extending in the vehicle width direction, a shock absorber 6 made of foamed synthetic resin disposed on the front side of the bumper reinforcement 5, and a shroud described later A synthetic resin plate member 7 connected to the lower 3, a pipe member 8 for vehicle parts, a synthetic resin bumper face 10 disposed at the front end of the automobile, and an opening 11 of the bumper face 10. A bumper mesh member 20 made of synthetic resin is provided. In the following description, “up / down / left / right” shown in FIG.

  The shroud 1 is integrally formed in a rectangular frame shape by a shroud upper 2 and a shroud drawer 3 and a pair of left and right shroud sides 4 in a front view, and has a substantially rectangular radiator (not shown), a condenser (not shown), etc. The entire heat exchanger is surrounded and supported.

  As shown in FIG. 3, a bumper reinforcement 5 is connected to the crash can fixed to the front end portions of the left and right front side frames, and the bumper reinforcement 5 has a closed cross-sectional shape extending in the left-right direction. Yes. A shock absorber 6 is disposed on the front side of the bumper reinforcement 5, and the shock absorber 6 absorbs collision energy by being compressed and deformed by a collision load applied from the front via the bumper face 10 at the time of a vehicle collision, It is configured in a size and shape that can achieve the desired energy absorption function. A plate member 7 extending in the vehicle width direction is provided on the front side of the shroud drawer 3, and the plate member 7 has a size and shape that can achieve the desired leg-paying performance for paying the pedestrian's leg when colliding with the pedestrian. It is configured.

  As shown in FIGS. 1, 2, and 7, the bumper face 10 is disposed in front of the bumper reinforcement 5 and the shock absorber 6, and retreats backward from the center in the vehicle width direction toward the side. It is formed in such a curved shape. An opening 11 for introducing a traveling wind is formed in a central portion of the bumper face 10 in the vehicle width direction. The opening 11 is located in front of the heat exchanger, and outside air is introduced from the opening 11 so that a cool traveling wind flows through the heat exchanger.

  As shown in FIGS. 8 and 9, in the periphery of the opening 11 of the bumper face 10, six engagement claws 13 are provided on the upper end side periphery, and four engagement claws are provided on the lower end side periphery. Two engaging claws 12 are respectively provided at the peripheral edges on the left and right ends, and these engaging claws 12 and 13 are for attaching the bumper mesh member 20. The engaging claw 12 is formed so as to extend rearward, an inclined guide portion 12a is formed at the distal end portion of the engaging claw 12, and a locking portion 12b is formed at the front end of the guide portion 12a. Similarly, the engaging claw 13 is formed so as to extend rearward, an inclined guide portion 13a is formed at the tip of the engaging claw 13, and a locking portion 13b is formed at the front end of the guide portion 13a. ing.

  As shown in FIGS. 1 to 6, the bumper mesh member 20 is configured to have substantially the same width in the vehicle width direction as the heat exchanger supported by the shroud 1, and the mesh main body portion 21 and the mesh main body portion 21. A pair of seal wall portions 30 each having a vertical wall shape extending rearward from the left and right end portions of the same are integrally formed. The mesh main body 21 is formed with a size slightly larger than the opening 11 of the bumper face 10, and the mesh main body 21 is attached to the rear surface side of the bumper face 10. A plurality of oval vent holes 22 are formed in a mesh shape from the upper end portion to the lower end portion of the mesh main body portion 21 on the inner side of the peripheral edge portion of the mesh main body portion 21.

  As shown in FIGS. 4 to 6, 8, and 9, the upper peripheral edge of the mesh main body 21 is engaged with the six engaging claws 13 on the upper side of the opening 11 of the bumper face 10. Six attachment portions 23 formed with joint holes 23 a are provided, and the lower peripheral edge portion of the mesh body portion 21 is used to engage the four engagement claws below the opening 11 of the bumper face 10. Four attachment portions 24 having engagement holes 24 a are provided, and three engagement claws 12 on both the left and right sides of the opening 11 of the bumper face 10 are engaged with the peripheral portions on the left and right sides of the mesh body portion 21. There are provided three attachment portions 25 and 26 each having an engagement hole 25a.

  When the bumper mesh member 20 is assembled to the bumper face 10, the bumper mesh member 20 is brought into contact with the peripheral edge of the opening 11 on the rear surface side of the bumper face 10 from the rear, and above the opening 11 of the bumper face 10. The engagement holes 23a of the six attachment portions 23 provided on the upper peripheral edge of the mesh main body 21 are respectively engaged with the six engagement claws 13 provided, and 4 provided on the lower side of the opening 11 of the bumper face 10. Three engagement claws provided on the left side of the opening 11 of the bumper face 10 are respectively engaged with the engagement holes 24a of the four attachment portions 24 provided on the lower peripheral edge portion of the mesh main body 21 with the two engagement claws. 12 is engaged with the engagement holes 25a of the three attachment portions 25 provided on the left peripheral portion of the mesh main body portion 21, and the three engagement claws provided on the right side of the opening 11 of the bumper face 10 are engaged. The engagement holes of the mesh body 21 of the right rim into three provided the attaching part 26 is engaged respectively engaged, bumper mesh member 20 is assembled to the bumper face 10.

  As shown in FIGS. 3 and 5, receiving portions 27 for receiving the shock absorber 6 are formed on the left and right ends of the upper peripheral edge on the rear surface side of the mesh main body portion 21, respectively. The front end of the shock absorber 6 is brought into contact with the receiving portion 27 in a state where 10 is attached to the front portion of the automobile. A pair of seal wall portions 30 each having a vertical wall shape extending rearward are provided at both left and right end portions of the lower portion of the mesh main body portion 21.

  As shown in FIGS. 4 to 8, the pair of seal wall portions 30 includes a vertical wall portion 30 a and a bent portion 30 b in which the rear end of the vertical wall portion 30 a is bent outward in the vehicle width direction. Have. The pair of seal wall portions 30 are formed to be inclined with respect to the front-rear direction so as to move outward in the vehicle width direction as they move from the front end to the rear end, and the hot air discharged from the engine and the heat exchanger is shroud 1. The heat exchanger is shut off so as not to flow into the front side, and flows out to the left and right sides of the engine room to prevent the heat exchanger from blowing back to the front. On the rear surface side of the mesh main body 21, two ribs 31 are continuously formed on both the left and right ends of the lower portion and the pair of seal wall portions 30 so as to ensure the rigidity of the seal wall portions 30. is doing.

  As shown in FIGS. 3 and 7, a pipe member 8 serving as a heat exchanger, which is a vehicle component, crosses between the rear ends of the pair of seal walls 30 and the lower ends of the pair of shroud sides 4. The seal wall portion 30 is formed such that the bent portion 30b at the rear end thereof is located on the outer side in the vehicle width direction from the shroud side 4.

Next, the operation and effect of the front structure of the automobile will be described.
A shroud 1, a bumper face 10, and a bumper mesh member 20 are provided. The bumper mesh member 20 includes a mesh main body 21 having a plurality of ventilation holes 22 formed in an inner portion of the peripheral portion, and a mesh main body 21. It consists of a pair of vertical wall-like seal wall portions 30 extending rearward from the left and right ends. While the automobile is running, the hot air discharged from the engine or heat exchanger in the engine room flows forward, but the hot air is blocked by the seal wall 30 of the bumper mesh member 20 so as not to flow to the front side of the shroud 1. It flows out to the left and right sides of the engine room. Therefore, it is possible to prevent the hot air released from the engine or the heat exchanger from passing back between the shroud side 4 and the bumper face 10 and blowing back to the front of the heat exchanger, thereby reducing the performance of the heat exchanger. Can be prevented.

  As described above, the bumper face 10 includes the bumper mesh member 20 having the peripheral edge attached to the periphery of the opening 11, and the bumper mesh member 20 has a plurality of air holes 22 formed in the inner portion of the peripheral edge. Since it has a mesh main body 21 and a pair of vertical wall-like seal walls 30 extending rearward from the left and right ends of the mesh main body 21, it is discharged from the engine or heat exchanger in the engine room. When the hot air flows forward, the hot air can be blocked by the seal wall portion 30 of the bumper mesh member 20 so as not to flow into the front side of the shroud 1 and can be prevented from blowing back to the front of the heat exchanger.

  The number of parts can be reduced by integrally forming the seal wall portion 30 on the bumper mesh member 20, and the bumper mesh member 20 is attached to the bumper face 10 and the bumper face 10 is simply attached to the front portion of the automobile. In addition, the seal wall portion 30 for preventing the hot air from blowing back can be assembled to the front portion of the automobile, and the number of steps for assembling the automobile front portion can be reduced.

  Since the rib 31 formed continuously over the mesh main body 21 and the seal wall portion 30 is provided on the bumper mesh member 20, the rigidity of the seal wall portion 30 can be increased, and the bumper can be moved while the automobile is running. The chatter vibration of the seal wall portion 30 caused by the traveling wind introduced from the opening 11 of the face 10 can be suppressed. The bumper mesh member 20 has a vehicle width direction width that is substantially the same as the vehicle width direction width of the heat exchanger. Since the bumper mesh member 20 is retracted together with the bumper face 10 and the rear end portion of the seal wall portion 30 comes into contact with the shroud side 4 at the time of an automobile collision, the seal wall portion 30 Bending is promoted and the shroud side 4 is not easily damaged.

  Further, since the seal wall portion 30 is not located at the position corresponding to the opening 11 on the rear surface side of the bumper face 10, the outside air is smoothly introduced from the opening 11 of the bumper face 10, and the bumper mesh member 20 having the seal wall portion 30 is provided. Even when attached to the bumper face 10, the cooling capacity of the heat exchanger does not decrease.

  A pipe member 8 of a vehicle part is disposed transversely between the rear end of the seal wall portion 30 and the shroud 1, and the bent portion 30 b at the rear end of the seal wall portion 30 is located outside the shroud side 4 in the vehicle width direction. Since the seal wall portion 30 is retracted at the time of a car collision, the pipe member 8 is sandwiched between the bent portion 30b at the rear end of the seal wall portion 30 and the shroud side 4, It is possible to prevent the pipe member 8 from being damaged. Since the bumper mesh member 20 is made of a synthetic resin material, the shroud side 4 is unlikely to be damaged when the seal wall 30 comes into contact with the shroud side 4 at the time of an automobile collision.

Next, a modified example in which the above embodiment is partially modified will be described.
1] In the above-described embodiment, the width of the bumper mesh member 21 in the vehicle width direction is increased, the inclination angle of the seal wall portion 30 is adjusted, and the seal wall portion 30 is positioned at a position corresponding to the opening 11 on the rear surface side of the bumper face 10. The seal wall 30 may be formed so as to be inclined with respect to the front-rear direction so as to move inward in the vehicle width direction as it moves from the front end to the rear end.

2] In the above embodiment, as shown in FIG. 10, when the pipe member of the vehicle part is not provided between the rear end of the seal wall 30A and the shroud side 4A, the width in the vehicle width direction of the shroud side 4A is increased. In addition, the rear end of the seal wall 30A may be provided so as to extend to the vicinity of the front end of the shroud side 4A. In this case, the gap between the shroud side 4A and the seal wall portion 30A is narrowed, and it is difficult for hot air to flow into the front side of the shroud, so that the effect of preventing hot air from blowing back can be further enhanced.
3) In addition, those skilled in the art can implement the present invention by adding various modifications without departing from the spirit of the present invention, and the present invention includes such modifications. .

It is a front view of the front part of a car concerning the example of the present invention. It is a rear view of a bumper face and a bumper mesh member. It is a principal part perspective view of the front part structure of a motor vehicle. It is a perspective view of a bumper mesh member. It is the perspective view seen from the back of a bumper mesh member. It is the expansion perspective view which looked at the principal part of the bumper mesh member from the back side. It is a transverse cross section of the important section of the front part structure of a car. It is a principal part enlarged view of FIG. It is a longitudinal cross-sectional view of the front end part of a motor vehicle. FIG. 8 is a diagram corresponding to FIG. 7 of a modified example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shroud 8 Pipe member 10 Bumper face 20 Bumper mesh member 21 Mesh main-body part 30 and 30A Seal wall part 31 Rib

Claims (6)

In the front structure of the car,
A shroud disposed in front of the engine room and supporting a heat exchanger, the shroud comprising a shroud upper, a shroud drawer, and a pair of shroud sides;
A bumper face that is disposed at the front end portion of the automobile and has an opening for introducing a traveling wind that is located in front of the heat exchanger;
A bumper mesh member having a peripheral edge attached to the peripheral edge of the opening of the bumper face;
The bumper mesh member includes a mesh main body portion having a plurality of ventilation holes formed in an inner portion of the peripheral edge portion, and a pair of vertical wall-shaped seals extending rearward from the left and right end portions of the mesh main body portion. A front structure of an automobile having a wall portion.   2. The front structure of an automobile according to claim 1, wherein the bumper mesh member is provided with ribs that are continuously formed over the mesh body and the seal wall.   The bumper mesh member has a vehicle width direction width that is substantially the same as a vehicle width direction width of the heat exchanger, and the seal wall portion is formed to be inclined with respect to the front-rear direction. Or the front part structure of the motor vehicle of 2.   4. The front structure of an automobile according to claim 3, wherein the seal wall portion is formed to be inclined with respect to the front-rear direction so as to move outward in the vehicle width direction as it moves from the front end to the rear end. .   A pipe member of a vehicle part is disposed transversely between the rear end of the seal wall portion and the shroud, and the seal wall portion is formed so that the rear end thereof is located outside the shroud side in the vehicle width direction. The front structure of an automobile according to claim 4.   6. The front structure of an automobile according to claim 1, wherein the bumper mesh member is made of a synthetic resin material.