JP6304280B2 - Bumper support structure of vehicle - Google Patents

Description

  The present invention relates to a bumper support structure for a vehicle.

  In recent vehicles, the bumper is generally configured by a bumper fascia formed of a synthetic resin and a bumper rain that is disposed behind the bumper fascia and extends in the vehicle width direction. In other words, the bumper fascia is exclusively used as a design of the front end portion of the vehicle and has low rigidity.

  In order to support the bumper fascia with low rigidity, a bumper support member is fixed to the upper part (shroud upper) of the shroud, and the front part of the bumper support member is fixed to the upper back surface of the bumper fascia. (See Patent Document 1). The height position of the rear end portion of the bumper fascia supported by the bumper support member is aligned with the height position of the front end portion of the bonnet (the bumper fascia and the bonnet are connected in a flush manner).

  On the other hand, the bumper fascia is generally formed with a grill opening for taking the running wind into the engine room at the center in the vehicle width direction. And as shown in patent document 2, the air guide member (air guide) which has a ventilation port for guiding the driving | running | working wind from a grill opening part in an engine room behind a grill opening part is also performed. Yes.

Japanese Patent Laid-Open No. 2003-261067 JP 2012-86726 A

  By the way, from the viewpoint of design and the like, it is considered that the bumper fascia has a shape that protrudes larger and forward. In this case, the upper part of the bumper fascia is positioned more forward than the shroud. For this reason, when the upper part of the bumper fascia is supported by the bumper support member, the length of the bumper support member in the front-rear direction, that is, the length of the part where the bumper fascia is supported in a cantilevered manner becomes considerably long. It is difficult to support with sufficient rigidity. That is, when the user of the vehicle puts his / her hand on the upper surface of the bumper fascia and adds weight, the bumper support member bends and deforms downward so that the upper part of the bumper fascia is higher than the height of the bonnet tip. It becomes easy to produce the situation where it deform | transforms so that it may become low.

  It can be considered that the bumper support member is supported not only by the shroud but also by the bumper rain so that the upper portion of the bumper fascia can be supported more firmly by the bumper support member. That is, it is conceivable that a support portion extending downward toward the bumper rain is formed on the bumper support member, and the bumper support member is supported by the bumper rain via the support portion.

  However, when a support part supported by the bumper rain is formed on the bumper support member, if the support part exists at a position overlapping the air guide vent in the front view of the vehicle, the vehicle travels toward the engine room. The wind flow will be obstructed. In particular, when the bumper support member is intended to support the upper part of the bumper fascia sufficiently long to the inner side in the vehicle width direction, the above-described problem of overlap between the support portion and the ventilation opening tends to occur.

  The present invention has been made in view of the above circumstances, and its purpose is to support the upper part of the bumper fascia more firmly and not to impede the flow of the traveling wind toward the engine room. The object is to provide a bumper support structure for a vehicle.

In order to achieve the above object, the following solution is adopted in the present invention. That is, as described in claim 1,
A bumper support member fixed to the upper part of the shroud is fixed to the upper part of the bumper fascia,
The bumper support member has a support portion supported in contact with the bumper rain,
A grill opening is formed at the center of the bumper fascia in the vehicle width direction to take the running wind into the engine room.
An air guide having an air vent that guides the running air from the grill opening into the engine room is disposed behind the grill opening,
The bumper support member has an overlapping portion that overlaps in the vehicle width direction with respect to the vent hole in a front view of the vehicle,
In the bumper support member, in the overlapping portion, a ventilation opening for allowing the traveling air passing through the ventilation opening to pass is formed.
It is like that.

  According to the above solution, the bumper support member that supports the upper part of the bumper fascia is supported by the shroud at the rear part and is supported by the bumper rain at the front part. Can be supported firmly. Thereby, even when the bumper fascia is formed so as to protrude largely forward from the shroud, it is possible to reliably prevent the upper part of the bumper fascia from being bent and deformed inadvertently downward. Further, since the ventilation opening is formed at the overlapping portion of the bumper support member that overlaps with the ventilation opening of the air guide, the traveling air from the grill opening can be sufficiently taken into the engine room.

A preferred mode based on the above solution is as described in claim 2 and the following. That is,
The ventilation opening portion and the support portion of the bumper support member are adjacent to each other (corresponding to claim 2). In this case, it is preferable in securing the supporting rigidity around the ventilation opening.

The bumper support member has an upper part extending in the front-rear direction and a front part extending in the vertical direction,
The ventilation opening is formed to be continuous across the upper part and the front part,
(Corresponding to claim 3). In this case, a fragile portion is formed in the vicinity of the ventilation opening, that is, a portion located in front of the shroud that is an important member so that the fragile portion is destroyed at the time of a slight forward collision so that the impact at the time of the forward collision is reduced. This is preferable for preventing transmission to the shroud via the bumper support member.

  The air guide has a rear extending portion extending into the ventilation opening (corresponding to claim 4). In this case, it is preferable for the traveling wind to sufficiently flow toward the rear through the ventilation opening.

  The support portion is placed on the bumper rain so as to be relatively displaceable in the front-rear direction (corresponding to claim 5). In this case, even if the bumper rain retreats during a light forward collision, the support part of the bumper support member is edge-cut from the bumper rain in the front-rear direction. This is preferable for protecting the shroud and the radiator held by the shroud.

  ADVANTAGE OF THE INVENTION According to this invention, the upper part of a bumper fascia can be supported more firmly, and the flow of the driving | running | working wind toward an engine room can be prevented.

The front view which looked at the vehicle to which this invention was applied from the front. Side surface sectional drawing which shows the mode of the mounting part to the bumper rain of a bumper support member, and shows a cross section by the ventilation opening part of a bumper support member. Side surface sectional drawing which shows the mode of the mounting part to a bumper rain of a bumper support member, and shows a cross section in the position shifted in the vehicle width direction with respect to the ventilation opening part of a bumper support member. The front view which shows the state which removed the bumper fascia and the bonnet from the state of FIG. The front view which shows the state which removed the headlight unit and the air guide from the state of FIG. The top view which shows the state which removed the bonnet from the state of FIG. The top view which shows the state which removed the bumper fascia from the state of FIG. The perspective view which looked at the headlight unit part shown in FIG. 7 from the front lower part. The top view which shows the state which removed the headlight unit from the state of FIG. The top view which looked at the bumper support member from the upper part. The front view which looked at the bumper support member from the front. The side view which looked at the bumper support member from the vehicle width direction outer side. The perspective view of a bumper support member. The perspective view which shows the air guide arrange | positioned at the grille opening part of a bumper fascia. The principal part side surface sectional view which shows a mode that the back extension part of an air guide is extended in the ventilation opening part of a bumper support member.

  In FIG. 1, 1 is a bumper fascia, 2 is a bonnet that covers the engine room from above, and 3 is left and right front fenders. The bumper fascia constitutes the outer shell of the front end portion of the vehicle, is formed of a synthetic resin, and is flush with the bonnet 2.

  5 and 6, a shroud (radiator shroud upper) 4 is disposed below the front end of the bonnet 2 (see also FIGS. 2 and 3). An outer side end portion of the shroud 4 in the vehicle width direction is joined to an apron reinforcement 5 extending in the front-rear direction. The front fender 3 is fixed to the apron reinforcement 5. In addition, an engine (not shown) is disposed behind the shroud 4.

  6 to 9, reference numeral 10 denotes a pair of left and right front side frames (one front side frame is not shown). As shown in FIG. 8, a crash can 11 is fixed to the front end of each front side frame 11, and the front ends of the left and right crash cans 11 extend in the vehicle width direction (see also FIG. 2 and FIG. 3). ). An impact absorbing material (for example, formed of a foam material) is fixed to the front surface of the bumper rain 12. 2 and 3 show only the cross section of the outer shell portion of the bumper reinforcement 12, but the inside thereof has a high rigidity while being reduced in weight by, for example, a honeycomb structure. It is formed as.

  Referring again to FIG. 1, the headlight opening 1a, the turn lamp (direction indicator) opening 1b, and the fog lamp opening are arranged at the left and right ends of the bumper fascia 1 in order from the upper side to the lower side. 1c is formed. Each opening 1a-1c is each opened toward the front. A headlight unit 31 is disposed in the opening 1a, a turnlight unit 32 is disposed in the opening 1b, and a fog lamp unit 33 is disposed in the opening 1c.

  The bumper fascia 1 is formed with an upper grill opening 1d and a lower grill opening 1e extending in the vehicle width direction between the pair of left and right openings 1a to 1c (see also FIGS. 2 and 3). ). Each of the grill openings 1d and 1e is for taking a running wind into the engine room. An upper grill 6 is disposed in the upper grill opening 1d, and a lower grill 7 is disposed in the lower grill opening 1e. Each of the grills 6 and 7 is formed with a large number of small holes through which the traveling wind passes.

  The front end portion of the inner side portion in the vehicle width direction of the bumper fascia 1 is positioned considerably larger than the shroud 4. Moreover, the vehicle width direction outer side edge part of the bumper fascia 1 is made into the rear extension part 1f extended greatly back, and the rear end of this rear extension part 1f is located behind the shroud 4. (See FIG. 4).

  The bumper fascia 1 which is easily bent and deformed is supported by the shroud 4 and the bumper rain 12 via a pair of left and right bumper support members 20 as will be described later.

  The bumper support member 20 is shown in detail in FIGS. The bumper support member 20 is entirely formed as a rib structure by, for example, injection molding synthetic resin. The bumper support member 20 roughly includes a rear portion 21, a front portion 22, a front extending portion 23, a lower extending portion 24, and a rear extending portion 25.

  The rear portion 21 extends in the vehicle width direction along the shroud 4 and is fixed to the shroud 4 by a fixing tool such as a bolt (the fixing portion to the shroud 4 is shown in FIGS. 2, 3, and 6). , Indicated by reference numeral t1 in FIG. 7). The front part 22 extends in the vehicle width direction along the rear upper edge of the bumper fascia 1 on the front side of the rear part 21, and is fixed to the bumper fascia 1 by a process tool such as a bolt (bumper fascia 1). The fixing site is indicated by the symbol t2 in FIG. 2, FIG. 3, and FIG.

  The front extending portion 23 is a portion extending further forward from the front end portion of the front portion 22. The lower extending portion 24 extends downward from the front end portion of the front extending portion 23. Specifically, the downwardly extending portion 24 is positioned on the inner side of the bumper support member 20 in the vehicle width direction, and connects the pair of left and right leg portions 24a and the lower end portions of the pair of left and right leg portions 24a. And a bottom wall portion 24b. A space surrounded by the pair of left and right leg portions 24a and the bottom wall portion 24b is a ventilation opening 24c through which the traveling wind passes. The upper part of the ventilation opening 24c is opened, and the rear end position of the upward opening part is located further rearward than the rear end positions of the leg part 24a and the bottom wall part 24b.

  The ventilation opening 24c is continuously formed across the front extending portion 23 as an upper portion extending in the front-rear direction of the bumper support member 20 and the lower extending portion 24 as a front portion extending in the vertical direction. Therefore, the vicinity of the ventilation opening 24c constitutes a fragile portion that is relatively weak compared to other portions. Further, in order to sufficiently increase the fragility of the fragile portion, the leg portion 24a and the bottom wall portion 24b existing around the ventilation opening 24c are also thin.

  The downward extending portion 24 having the leg portion 24 a and the bottom wall portion 24 b is positioned at the most front end portion of the bumper support member 20. That is, the downwardly extending portion 24 is positioned in front of the fixed portion t2, and overlaps with the front-rear direction position of the bumper rain 12 in plan view. And the lower end of the downward extension part 24 is contact | abutted and mounted in the upper surface of the bumper rain 12, and the front extension part 24 comprises the support part. The downward extending portion 24 is only placed on the bumper rain 12 and can be relatively displaced in the front-rear direction with respect to the bumper rain 12. That is, even if the bumper rain 12 moves backward in the case of a forward collision, the downwardly extending portion 24 does not move backward. Even if the backward movement from the bumper rain 12 is transmitted to the front extending portion 24, the front extending portion 24 that is configured as the fragile portion is destroyed, so that the shroud 4 is interposed via the bumper support member 20. On the other hand, it is possible to prevent a situation in which a load of backward movement acts.

  The rear extending portion 25 in the bumper support member 20 extends rearward and is fixed to the front fender 3 (that is, the apron reinforcement 5) by a fixing tool such as a bolt (a fixing portion for the front fender 3). , And indicated by reference numeral t3 in FIGS.

  As shown in FIG. 8, the lower part of the bumper support member 20 is fixed to a flange portion 10a joined to the front end portion of the front side frame 10 by a fixing tool such as a bolt (fixed to the front side frame 10). The part is indicated by reference numeral t4 in FIG. 8).

  As described above, the bumper support member 20 has the rear portion 21 fixed to the upper portion of the shroud 4 with the fixing portion t1, and the rearward extending portion 25 fixed to the front fender 3 (that is, the apron reinforcement 5). Since it is fixed at t3 and its lower part is fixed to the front side frame 10 by the fixing portion part t4, it is firmly held on the vehicle body side.

  The bumper fascia 1 is supported on the vehicle body side via the bumper support member 20. In this case, the bumper support member 20 is held and supported by the vehicle body in the front-rear direction because the front extending portion 24 is placed on and supported by the bumper rain 12. It can be supported with great care. That is, even when the user of the vehicle carelessly touches the upper surface (especially the rear upper surface) of the bumper fascia 1 and puts his / her weight on it, it is certain that the bumper fascia 1 bends and deforms downward. Will be prevented.

  Here, the bumper support member 20 also holds the headlight unit 30. That is, the upper part and the lower part of the headlight unit 30 are fixed to the bumper support member 20, and each fixing part is indicated by reference numeral t5 (see FIGS. 7 and 8).

  In order to hold the headlight unit 30, the bumper support member 20 is formed with a large storage recess 26 at the end on the outer side in the vehicle width direction, as shown in FIGS. An end surface on the inner side in the vehicle width direction that defines the storage recess 26 is formed by a side wall portion 26a having a curved surface that is convex toward the inner side in the vehicle width direction. The side wall portion 26a extends in the front-rear direction so as to cover the side of the headlight unit 30 (the side surface on the inner side in the vehicle width direction), and from the upper surface of the bumper support member 20 to the fixing portion t4 to the front side frame 10. The bumper support member 20 is improved in rigidity by extending vertically.

  Here, an air guide 40 as shown in FIGS. 4 and 14 is provided corresponding to the upper grille opening 6 of the bumper fascia 1. The air guide 40 has a traveling wind passage opening 40a extending in the vehicle width direction, and has a pair of left and right rear extending portions 40b extending rearward at the vehicle width direction end portion. The ventilation opening 40 a faces the ventilation opening 24 c in the bumper support member 20. That is, the ventilation opening 24c is formed in the overlapping part which overlaps with the ventilation opening 40a in the vehicle front view among the downward extending parts 24 in the bumper support member 20.

  The rear extension 40b is inserted into the ventilation opening 24c. The vehicle width direction position of the rearward extending portion 40b with respect to the ventilation opening 24c is positioned in the vehicle opening direction near the outer side end of the ventilation opening 24c. That is, of the pair of left and right legs 24a defining the vehicle width direction end of the ventilation opening 24c, the rear extension 40b overlaps the inner surface of the leg 24a on the vehicle width direction outer side. As a result, the traveling wind from the vent 40 b smoothly and sufficiently flows backward through the vent opening 24 c in the bumper support member 20.

  As shown in FIGS. 2 to 4, an elastic material (for example, formed of a foam material) 41 extending in the vehicle width direction is fixed to the air guide 40. It is located most recently. Further, an elastic material (for example, rubber) 42 extending in the vehicle width direction is fixed to the air guide 40 at a lower portion thereof. The front end edge of the elastic member 42 is located near the lower edge of the upper grill opening 1d. The traveling wind from the upper grille opening 1 d is sufficiently introduced into the ventilation port 40 a of the air guide 40 by the guide action of the traveling wind by the upper and lower elastic members 41, 42.

  Although the embodiments have been described above, the present invention is not limited to the embodiments, and appropriate modifications can be made within the scope of the claims. The downward extending portion 24 may be fixed to the bumper rain 12 with a fixing tool such as a bolt. Of course, the object of the present invention is not limited to what is explicitly stated, but also implicitly includes providing what is substantially preferred or expressed as an advantage.

  The present invention is suitable as a support structure for a bumper fascia.

1: Bumper Faisha 1a: Opening (for headlight)
1b: Opening (for turn light)
1c: Opening (for fog lamp)
1d: Upper grille opening 1e: Lower grille opening 1f: Rear extension 2: Bonnet 3: Front fender 4: Shroud 5: Apron reinforcement 10: Front side frame 10a: Flange 11: Crash can 12: Bumper rain 13: Shock absorber 20: Bumper support member 21: Rear part (part fixed to the shroud)
22: Front (part fixed to the bumper fascia)
23: Front extension (upper part)
24: Downward extension part (support part, front part)
24a: Leg portion 24b: Bottom wall portion 24c: Ventilation opening (also includes a weak portion)
25: Back extension part 26: Storage recess 26a: Wall part 30: Headlight unit 31: Turn light unit 32: Fog lamp unit 40: Air guide 40a: Vent 40b: Back extension part 41: Elastic material 42: Elasticity Material

Claims (5)

A bumper support member fixed to the upper part of the shroud is fixed to the upper part of the bumper fascia,
The bumper support member has a support portion supported in contact with the bumper rain,
A grill opening is formed at the center of the bumper fascia in the vehicle width direction to take the running wind into the engine room.
An air guide having an air vent that guides the running air from the grill opening into the engine room is disposed behind the grill opening,
The bumper support member has an overlapping portion that overlaps in the vehicle width direction with respect to the vent hole in a front view of the vehicle,
In the bumper support member, in the overlapping portion, a ventilation opening for allowing the traveling air passing through the ventilation opening to pass is formed.
A bumper support structure for a vehicle. In claim 1,
A bumper support structure for a vehicle, wherein the ventilation opening portion and the support portion of the bumper support member are adjacent to each other. In claim 2,
The bumper support member has an upper part extending in the front-rear direction and a front part extending in the vertical direction,
The ventilation opening is formed to be continuous across the upper part and the front part,
A bumper support structure for a vehicle. In any one of Claims 1 thru | or 3,
A bumper support structure for a vehicle, wherein the air guide has a rearward extending portion extending into the ventilation opening. In any one of Claims 1 thru | or 4,
The bumper support structure for a vehicle, wherein the support portion is placed on the bumper rain so as to be relatively displaceable in the front-rear direction.

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