JP2017114263A - Vehicle pedestrian protection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the rigidity of a resin radiator support, to prevent the radiator support from being enlarged by assuring sufficient rigidity even when the thickness of the lower side of the radiator support in which a foot sweeping member is formed is reduced, and to easily assure the installation space of the radiator support in a vehicle.SOLUTION: Each of the sides of a resin radiator support 3 having a front square shape is formed into a sectional U shape opened to a rear surface side, a foot sweeping part 6 is integrally formed in the front of the lower side of the radiator support 3 in the manner of projecting forward, and the front side of the foot sweeping part 6 is formed into a sectional U shape opened downward.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a pedestrian protection device for a vehicle, which is provided in a front part of a vehicle and includes a foot wiping structure that protects the pedestrian's knee by removing the foot below the knee when a pedestrian collides.

  2. Description of the Related Art Conventionally, a pedestrian protection device has been adopted in which a foot wiping structure is provided at the front of a vehicle such as an automobile to protect the pedestrian's knee by removing the foot below the knee when a pedestrian collides ( Patent Document 1). At this time, when a foot wiper member that protrudes forward from the front bumper is disposed and the foot wiper member is fixed to the radiator support, an impact caused by a collision of the pedestrian with the front surface of the vehicle is set in advance. When the reference amount is exceeded, the foot wiping member is fixed by a predetermined fixing mechanism so that the fixing of the foot wiping member to the radiator support is released. Thereby, at the time of a pedestrian collision, it is possible to prevent the pedestrian from damaging the knee by paying off the shin portion below the pedestrian's knee before the pedestrian is damaged by the foot removal member.

  By the way, in the case of a conventional vehicle, it is common to employ a metal radiator support. However, in order to reduce the weight of recent vehicles, it is also possible to reduce the weight by forming the radiator support with a resin. (See Patent Document 2). Such resin radiator supports need to secure the strength of the vertical pillars of the radiator support to the extent that they can withstand impacts during light collisions such as pedestrian collisions. In preparation for a strong collision such as a collision, the front parts of the left and right side members constituting the vehicle body must be deformed to absorb the shock efficiently.

JP 2007-55543 A (see abstract, paragraphs 0055 to 0094 and FIGS. 1 and 2) JP 2002-160665 A (see paragraphs 0015 to 0017 and FIGS. 1 to 4)

  However, since the resin radiator support in Patent Document 2 described above is partially L-shaped in cross section (see FIG. 2), there is room for improvement in rigidity, and rigidity remains while the partial cross-section is L-shaped. In order to increase the thickness, it is necessary to increase the thickness of the member in the resin molding, which may cause a new problem that the entire radiator support becomes large and it becomes difficult to secure an installation space in the front portion of the vehicle.

  The present invention aims to improve the rigidity of the radiator support made of resin, and to prevent the enlargement of the radiator support by ensuring sufficient rigidity even if the thickness of the lower side of the radiator support in which the foot wiping portion is formed is suppressed. It is an object of the present invention to make it easy to secure a space for installing a support in a vehicle.

  In order to achieve the above-described object, a pedestrian protection device for a vehicle according to the present invention is a foot that is provided at a front portion of a vehicle and protects the pedestrian's knee by removing the foot below the knee when a pedestrian collides. In a vehicle pedestrian protection apparatus having a paying structure, a radiator support made of resin having a square shape in front view and having a U-shaped cross section with each side open to the rear side, and a front side of the lower side of the radiator support. And a foot-pasting part that protects the pedestrian's knee by paying below the knee at the time of a pedestrian collision, and the foot-pasting part has a cross section whose front side is open downward It is characterized by having a U-shape.

  According to the present invention, each side of the resin-made radiator support that has a letter-shaped shape when viewed from the front is formed into a U-shaped cross section that is open to the rear surface side, and projects forward and integrally with the front part of the lower side of the radiator support. Since the foot-pasting part was formed and the front side of this foot-pasting part was opened in a U-shaped cross section, a U-shaped cross-section was formed over the entire circumference of the R-shaped radiator support. The torsional rigidity can be improved, and by making the front side of the footing part a U-shaped cross section that opens downward, it becomes possible to suppress the thickness of the lower side of the radiator support that forms the footing part, An increase in the size of the radiator support can be prevented while ensuring sufficient rigidity, and a space for installing the radiator support in the vehicle can be easily secured.

  And, with the foot support part of the radiator support having such a high rigidity, the lower part of the resin radiator support is not deformed, and the shin part below the pedestrian's knee is paid to prevent the pedestrian's knee from being damaged. be able to.

It is a perspective view of the decomposition state of one embodiment of the pedestrian protection device for vehicles concerning the present invention. It is a rear view of a radiator support. The cross section of a radiator support is shown, (a), (b), (c) is an arrow directional cross-sectional view in the XX line, YY line, and ZZ line in FIG. 2, respectively. It is a cutaway side view of a radiator support.

  An embodiment of a pedestrian protection device for vehicles according to the present invention will be described in detail with reference to FIGS. Note that front and rear and left and right in the present embodiment mean front and rear and left and right as viewed in a seated state on the seat.

  As shown in FIG. 1, as a front structure in which an engine of a vehicle 1 such as an automobile is disposed, left and right side members 2a and 2b extending in the front-rear direction constituting the vehicle body, and a radiator support 3 for supporting a radiator, And a bumper reinforcement 4 for reinforcing a front bumper (not shown).

  The radiator support 3 is formed by resin molding so as to form a square shape when viewed from the front as shown in FIG. 2 and to form a U-shaped cross section with each of the upper, lower, left and right sides opened to the rear side as shown in FIG. Has been. 3A is a cross-sectional view taken along line X-X of the radiator support 3 shown in FIG. 2, FIG. 3B is a cross-sectional view taken along line Y-Z, and FIG.

  Further, as shown in FIG. 4, a foot wiper 6 projecting forward over the entire left and right direction is integrally formed at the front part of the lower side of the radiator support 3, and the pedestrian collides with the foot wiper 6. When this happens, the shin below the pedestrian's knee is removed to prevent damage to the pedestrian's knee and protect the knee.

  Further, support portions 7 and 7 are integrally formed on the rear surfaces of the left and right lower portions of the radiator support 3 so as to extend obliquely rearward and upward from the lower ends. The upper surfaces of these support portions 7 and 7 are respectively left and right. Contact surfaces 7a and 7a that contact the lower surfaces of the front end portions of the side members 2a and 2b are formed, respectively, and the lower side of the radiator support 3 projects against the left and right side members 2a and 2b by the contact of the contact surfaces 7a and 7a. Will be supported by the state.

  Therefore, even if an impact caused by a pedestrian's collision with the foot removal portion 6 is applied to the lower side of the radiator support 3, the deformation of the lower side of the radiator support 3 is suppressed, and the shin portion below the pedestrian's knee is removed. 6 can be reliably paid, and damage to the pedestrian's knee is prevented. On the other hand, at the time of a strong collision such as a collision between vehicles, the support portions 7 and 7 are only in contact with the lower surfaces of the front end portions of the left and right side members 2a and 2b, so that the support portions 7 and 7 of the radiator support 3 The left and right side members 2a and 2b slide on the contact surfaces 7a and 7a and easily move rearward, and a plurality of parts are formed on the front portions of both side members 2a and 2b to facilitate deformation. The deformation of the front portions of the side members 2a and 2b in the V-shaped groove 8 (see FIG. 4) is not hindered.

  By the way, the lower side of the radiator support 3 including the foot paying part 6 has a plurality of ribs 8 in the left-right direction in the cross section as viewed from the side, as shown in FIG. Thus, a plurality of U-shaped portions opened downward are formed in a continuous shape. In this way, the thickness of the lower side of the radiator support 3 on which the foot part 6 is formed is suppressed by making the front side of the lower side of the radiator support 3 on which the foot part 6 is formed open downward. Therefore, it is possible to easily secure a space for installing the radiator support 3 in the vehicle by preventing an increase in the size of the radiator support 3 while ensuring sufficient rigidity.

  As shown in FIG. 2, substantially triangular or triangular onigiri-shaped through holes 12 having rounded corners are formed at substantially central portions of the left and right sides of the radiator support 3, and both left and right ends of the bumper reinforcement 4 The mounting portions 4a and 4a, which are formed to be recessed rearward on the rear surface of the portion, are connected and fixed to the front ends of the left and right side members 2a and 2b with bolts while being inserted through the through holes 12 and 12, respectively. It has become.

  Therefore, according to the above-described embodiment, each side of the resin-made radiator support 3 having a rectangular shape in front view is formed in a U-shaped cross section that is open to the rear surface side, and is formed at the front of the lower side of the radiator support 3. Since the foot-pasting part 6 is integrally formed so as to protrude forward and the front side of the foot-pasting part 6 is opened downward, a U-shaped cross section is formed over the entire circumference of the R-shaped radiator support 3. The torsional rigidity of the radiator support 3 can be improved, and the radiator support 3 in which the foot cleaning part 6 is formed by making the front side of the foot cleaning part 6 open in a U-shaped cross-section. The thickness of the lower side of the radiator support 3 can be suppressed, the radiator support 3 can be prevented from being enlarged while ensuring sufficient rigidity, and the installation space of the radiator support 3 in the vehicle can be easily secured.

  In this way, the foot support portion 6 of the radiator support 3 having high rigidity pays off the shin portion below the pedestrian's knee without deforming the lower side of the resin radiator support 3 to damage the pedestrian's knee. Can be prevented.

  The present invention is not limited to the above-described embodiment, and various modifications other than those described above can be made without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the U-shaped cross section formed on the rear surface side of each of the upper, lower, left and right sides of the radiator support 3 is not limited to one U-shaped cross section, and a plurality of U-shaped cross sections are connected on one side. The resin may be molded into a different shape. In this way, rigidity can be further improved.

DESCRIPTION OF SYMBOLS 1 ... Vehicle 2a, 2b ... Side member 3 ... Radiator support 6 ... Foot-paying part

Claims (1)

In the vehicle pedestrian protection device provided with a foot cleaning structure that is provided at the front of the vehicle and protects the pedestrian's knee by removing the foot below the knee when the pedestrian collides,
A radiator support made of resin having a square shape in front view and having a U-shaped cross-section with each side open to the rear side,
The front part of the lower side of the radiator support protrudes forward and is integrally formed, and includes a foot-paying part that protects the pedestrian's knee by paying below the knee when the pedestrian collides,
The pedestrian protection device for vehicles, wherein the foot-pasting portion has a U-shaped cross section with the front side opened downward.

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