JP2002331887A - Bumper for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To deform ribs 29, 29 as aimed when an automobile V collides with a front obstacle to obtain stable energy absorbing performance in a bumper 1 where a bumper reinforcement 6 is disposed extending in the car width direction in the front of the car body of the automobile V, an energy absorbing part 7 having a plurality of ribs 29, 29 arranged side by side in the car width direction is provided in the front, and they are covered with a bumper face 4 (surface member) from the front of the car body. SOLUTION: The energy absorbing ribs 29, 29 are disposed so that the front end parts respectively have a space from the back of the bumper face 4. The back of the bumper face 4 is provided with projections 30, 30 projected in a designated amount toward the rear of the car body and shifted in the car width direction to the front end part of the energy absorbing ribs 29, 29. Preferably the projection 30 is provided on both right and left sides in each energy absorbing rib 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle bumper having an energy absorbing member disposed between a skin member and a bumper reinforcement, and more particularly, to an energy absorbing member in which damage to a forward obstacle is taken into consideration. Belongs to the technical field of construction.

[0002]

2. Description of the Related Art Conventionally, as a bumper for an automobile of this type, a large number of ribs are integrally formed on the back surface of a bumper face (skin member) made of resin, or urethane foam is filled. In the event of a collision, the ribs and urethane foam are crushed and deformed between the bumper face and the rear reinforcement so that the energy of the collision is absorbed. That is, the reinforcement fixed to the strength member of the vehicle body can prevent the obstacle from entering the vehicle interior, protect the occupant, and reduce the impact at the time of collision by deformation of the ribs and the like.

On the other hand, in recent years, proposals have been made to reexamine the energy absorption characteristics of a bumper so as to not only protect the occupants of an automobile but also reduce the impact on a collision partner. For example, in the vehicle collision safety structure disclosed in Japanese Patent Application Laid-Open No. Hei 10-35377, a first bumper for self-safety is provided on the vehicle side, and a second bumper having good cushioning properties is added as an energy absorbing member on the front side. In the case of a collision at a relatively low speed, a good impact can be mitigated even for a collision partner.

[0004]

As described above, when the ribs are integrally formed on the back surface of the bumper face, if the ribs are used to secure a required amount of energy absorption, they are eventually reinforced by the ribs. The rigidity of the bumper face, which is to be increased, becomes excessively high, and the initial impact on the front obstacle at the time of a collision cannot be sufficiently reduced.

Further, if the ribs are elongated in the longitudinal direction of the vehicle body in order to secure the amount of energy absorption, it is inevitable that the surface of the bumper face will be sinkmarked, and the appearance of the bumper will be significantly deteriorated. is there.

In this regard, the front end of the rib is separated from the back surface of the bumper face, for example, the upper and lower ends of the rib are connected to the bumper face, or the rib is separated from the bumper face by an energy. It is also conceivable to provide it on the absorbing member.

However, when the front end of the energy absorbing rib is separated from the back surface of the bumper face,
At the time of collision, the way in which the ribs are crushed varies greatly, causing a new problem that the desired energy absorption performance cannot be obtained. That is, if the front end of the rib is separated from the rear surface of the bumper face, slippage occurs between the rear surface of the bumper face and the front end of the rib at the time of collision, and the proper input of the load to the rib may not be performed. is there.

Further, in order to obtain the intended impact absorbing performance, it is necessary to disperse and absorb the impact load to as many ribs as possible, but the front ends of the ribs are separated from the rear surface of the bumper face. In such a case, the rib which receives the load first may be stretched, which may hinder the input of the load to the other ribs, and furthermore, a large impact may be locally applied to the obstacle.

The present invention has been made in view of the above points, and an object thereof is to devise a structure of an energy absorbing rib provided between a skin member of an automobile bumper and a reinforcement, In the event of a collision, the ribs are deformed as intended so that a stable energy absorbing performance can be obtained.

[0010]

In order to achieve the above object, according to the present invention, a gap is provided between the front end of the energy absorbing rib and the back surface of the skin member, and the energy absorbing rib is provided at the time of collision. A projection was provided on the back surface of the skin member so as to engage with the front end.

More specifically, according to the first aspect of the present invention, a bumper reinforcement is provided at a front portion of a vehicle body so as to extend in a vehicle width direction, and provided at a front side of the bumper reinforcement, at least a vehicle body is provided. A vehicle bumper comprising: an energy absorbing member in which a plurality of energy absorbing ribs extending in the front-rear direction are juxtaposed in a vehicle width direction; and a resin skin member that covers the bumper reinforcement and the energy absorbing member from the front of the vehicle body. Target. The energy absorbing member is provided so as to have a gap between a front end portion of the energy absorbing rib and a back surface of the skin member. The projection is provided so as to be shifted from the front end of the absorbing rib in the vehicle width direction.

According to the above configuration, first, since the front ends of the ribs of the energy absorbing member are separated from the back surface of the skin member of the bumper, the shapes and dimensions of the ribs are set so as to secure a required energy absorption amount. Even so, the rigidity of the skin member does not become excessively high, so that the first impact at the time of collision with the front obstacle can be sufficiently reduced.
Also, sink marks do not occur on the surface of the bumper.

When the vehicle collides with an obstacle in front, the skin member is recessed rearward of the vehicle body with the collision portion as a center. At this time, the protrusion provided on the back surface of the skin member is By engaging with the front end of the absorbing rib, a collision load is properly and reliably input from the skin member to the rib, and is absorbed by deformation of the rib. That is, the ribs of the energy absorbing member can be deformed as intended and energy absorbing performance can be stably obtained.

According to the second aspect of the present invention, the projections of the skin member are provided on both sides in the vehicle width direction with respect to the front end of each energy absorbing rib. This ensures that the front end of the rib is securely engaged with the projection on the back surface of the skin member, even if the rib falls to any side in the vehicle width direction during a collision. The effect is sufficiently obtained.

According to the third aspect of the present invention, the protrusion of the skin member is
Each energy absorbing rib is provided on only one side in the vehicle width direction with respect to the front end thereof, and the rear end of the energy absorbing rib is bent to the opposite side to the protrusion of the skin member in the vehicle width direction to form a rear end. An inclined portion extending inclining toward the portion is provided.

Thus, when the vehicle collides with a front obstacle and the skin member is recessed rearward of the vehicle body, the energy absorbing rib receives a reaction force of the collision from the rear bumper reinforcement via the inclined portion. Therefore, the front end portion tends to fall down toward one side in the vehicle width direction. As a result, the front end of the energy absorbing rib is securely engaged with the protrusion provided only on one side in the vehicle width direction on the back surface of the facing skin member. That is, the inclination direction of the rib can be adjusted by the inclined portion, and the front end portion can be reliably engaged with the protrusion, whereby the collision load can be properly and reliably applied from the bumper skin member to the rib. Can be entered. In addition, since all the ribs bend in the same direction, interference between adjacent ribs is prevented, and the energy absorption performance of the ribs can be more reliably obtained.

According to the fourth aspect of the present invention, the skin member and the energy absorbing member are integrally formed of resin. By doing so, the skin member and the energy absorbing member can be easily manufactured by integral molding, and the number of parts and the number of assembling steps are reduced, so that the manufacturing cost is reduced.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 shows a front portion of an automobile V provided with a bumper 1 according to Embodiment 1 of the present invention. This bumper 1 is a hood 2 of a car V
And the front fenders 3 and 3 are provided so as to be connected to the front ends of the front fenders 3 and 3, and together with the hood 2 and the front fenders 3, constitute a front nose portion of the vehicle V. The bumper 1 is provided with a resin bumper face 4 (skin member) injection-molded so as to be substantially continuous with the hood 2 and the front fenders 3 and extends in the vehicle width direction. A steel bumper reinforcement 6 (hereinafter simply referred to as a reinforcement) having right and left ends fixed to the front ends of the front side frames 5 and 5, respectively, and a resin bumper mounted on the front side of the reinforcement 6. Energy absorbing member 7.

As shown also in FIGS. 2 to 4, the bumper face 4 has a front portion which is largely curved as a whole so as to gradually retreat from a substantially central portion in the vehicle width direction toward the left and right ends. Side flaps extend from both left and right ends toward the rear of the vehicle body and are continuous with the front fender 3. In addition, as shown in FIG. 4 only, at the lower edges thereof, a curved edge portion 4a which extends in a curved manner toward the inside of the bumper face 4 is provided over substantially the entire circumference,
Further, in a range of about 60% including a central portion in the vehicle width direction, a bottom plate portion 4b extending rearward of the vehicle body is provided so as to be continuous with the curved edge portion 4a.

The front portion of the bumper face 4 has a band-shaped area extending substantially in the vehicle width direction at a substantially central portion in the vertical direction as a bumper function portion 4c having an original function of the bumper. 4c, the hood hood 2 is located at a substantially central position in the vehicle width direction.
A central notch 8 forming a substantially pentagonal front grill is formed between the front edge of the headlamp and a pair of left and right headlamp mounting portions 10 to which headlamps 9 are respectively mounted on left and right sides thereof. Is formed.

On the other hand, as shown in FIGS. 2 and 3, the bumper face 4 below the bumper function section 4c has an air intake opening substantially over the entire width of the vehicle. A central opening 12 is formed at a substantially central portion in the vehicle width direction corresponding to the portion 4b so as to open forward of the vehicle body, and a lateral opening is formed on both left and right sides of the bumper face 4 so as to extend from a front portion to a side portion. Part 1
3 and 13 are respectively formed. Each of the side openings 13 is for guiding traveling wind toward a brake rotor for a front wheel (not shown).

The mounting structure of the bumper face 4 to the vehicle body is shown in FIG. 4 only. The upper mounting flange portion is provided at the upper end of the intermediate portion between the center notch 8 and each headlamp mounting portion 10. A pair of right and left upper mounting flanges 14 and 14 are fixed to the upper panel of the radiator shroud 40 (shown by phantom lines in the figure) by bolts. The rear end side of the bottom plate portion 4b of the bumper face 4 is fixed to the lower panel of the radiator shroud 40 by bolts. Further, three lower mounting flange portions 15, 15,... Are provided on each of the left and right sides of the curved edge portion 4b of the bumper face 4, and the middle flange portion 15 of the three mounting flange portions 15 Each side is connected to a front member of a perimeter frame 42 by stays 41.

The reinforcement 6 is disposed behind the bumper function portion 4c of the bumper face 4 at a predetermined interval, and as shown in FIG. 4, a cross member 16 having a gentle arc shape in plan view of the vehicle body. The crash tube 1 is provided so as to extend rearward from the left and right ends of the cross member 16 and connects and supports the cross member 16 to the front side frames 5, 5.
7 and 17. More specifically, as shown in FIGS. 5 and 6, the cross member 16 has a substantially rectangular hollow cross section, and an outer panel 18 having a substantially U-shaped cross section formed by roll forming a high-tensile steel plate, and a flat inner member. The panel 19 and the panel 19 are combined by welding.

The crash pipes 17, 17 are crushed in the front-rear direction in the event of a frontal collision of the vehicle V to absorb the shock at the beginning of the collision. An upper wall portion 20 and a lower wall portion 21, a front wall portion 22 provided so as to connect the front ends of the both wall portions 20, 21, and a pair of left and right rectangular plate-like side wall portions 23, 23. The walls 20 to 23 are combined so as to form a box opening to the rear of the vehicle body, and the opening is closed by a rectangular plate member 24. Further, a flange portion is formed on the outer peripheral side of the plate member 24, and is fixed to a fastening fixing portion having high rigidity provided at a front end portion of the front side frame 5 with a bolt.

The upper wall part 20, the lower wall part 21, and the front wall part 2
2 is a single steel plate member, and the upper wall portion 20 and the lower wall portion 2
1 are press-formed so as to be substantially parallel to each other. On the other hand, the pair of left and right side walls 23, 2
3 are individually press-formed and disposed between the upper wall portion 20 and the lower wall portion 21 such that the distance between the upper wall portion 20 and the lower wall portion 21 becomes larger toward the front side of the vehicle body. It is welded to the part 21. Therefore, crash tube 1
In No. 7, the closed sectional area gradually increases from the rear side of the vehicle body toward the front side. The upper and lower walls 20 and 21 and the left and right side walls 23 and 23 are formed with elliptical beads so as to be arranged in the vehicle longitudinal direction. The tube 17 is surely crushed and deformed as a whole.

Next, the structure of the energy absorbing member 7, which is a feature of the present invention, will be described in detail with reference to FIGS. The energy absorbing member 7 of the first embodiment is made of a resin material having excellent moldability, such as polypropylene, and is provided on the front side of the reinforcement 6 over the entire cross member 16 in the vehicle width direction. The thickness in the front-rear direction of the vehicle body is maximized substantially at the center portion of the vehicle, and the thickness gradually decreases from there toward the left and right ends. Note that FIG.
Is a resin louver for the front grille, and reference numeral 26 is a metal mesh fitted into the central opening 12.

As shown in FIG. 7, the energy absorbing member 7 has a rear wall portion 27 attached to the front surface of the reinforcement 6 with a fastener or an adhesive, and the rear wall portion 27.
, And a plurality of energy absorbing ribs 29, 29,... Arranged in parallel in the vehicle width direction on the front surface thereof, and the ribs 29, 29,. Is formed. The ribs 29, 29, ...
Are formed in a rectangular plate shape having substantially the same thickness, and extend from the front surface of the rear wall portion 27 toward the front of the vehicle body, and an edge portion (front end portion) on the front side of the vehicle body is a bumper face 4.
It is located so as to have a gap between it and the rear surface of the vehicle V. As will be described in detail later, it is deformed by an impact load input through the bumper face 4 at the time of a frontal collision of the vehicle V to absorb energy. It has become.

The energy absorbing ribs 29, 29,
.. Indicate that each rib 29 has the longest length in the vehicle front-rear direction at a substantially central portion in the vehicle width direction, and then gradually decreases toward both left and right sides thereof, and the ribs 2 adjacent in the vehicle width direction.
Are gradually reduced from a substantially central portion in the vehicle width direction toward both right and left ends. That is, as described above, while the bumper face 4 retreats from the substantially central portion in the vehicle width direction of the vehicle V toward the left and right ends, the reinforcement 6 is generally curved in the vehicle width direction while being gently curved. Since they extend, the distance between them in the front-rear direction of the vehicle body becomes smaller toward the left and right ends of the vehicle body.

Therefore, the rib 2 of the energy absorbing member 7
The length in the vehicle front-rear direction of 9, 29,... Is the longest at the substantially central portion in the vehicle width direction, and is gradually shortened from both sides toward both left and right sides. The amount of energy absorption by the fuel cell 29 is greatest at the substantially central portion in the vehicle width direction, and gradually decreases from there toward the left and right ends. And one such rib 2
9, the distance between the adjacent ribs 29 is reduced toward the left and right ends in the vehicle width direction, and the ribs 29 are arranged so as to be close to each other and dense. In other words, when viewed from the front of the vehicle body,
The energy absorbing characteristics of the energy absorbing ribs 29, 29,... Are substantially uniform in the vehicle width direction, and the impact absorbing performance against the front obstacle is sufficiently ensured on both left and right sides of the vehicle body.

Further, as a characteristic part of the present invention, the automobile bumper 1 of the first embodiment projects from the back surface of the bumper face 4 so as to correspond to the ribs 29 of the energy absorbing member 7, respectively. Is provided so that the load at the time of collision can be reliably input from the bumper face 4 to the ribs 29, 29,.

More specifically, as shown in FIGS. 6, 7 and 8 (a), each energy absorbing rib 29 protrudes from the back surface of the bumper face 4 along the front edge thereof. A pair of ridges 30, 30 (projections) extending in the vertical direction on both left and right sides in the vehicle width direction are integrally formed with the front edge of the rib 29. The protrusions 30, 30,... Are exaggerated in the drawing, but the amount of protrusion from the back surface of the bumper face 4 is set to approximately one third of the thickness of the bumper face 4.
This prevents the surface of the bumper face 4 from sinking during molding.

When the vehicle V collides with an obstacle in front, the bumper face 4 is recessed rearward of the vehicle with the collision portion as a center, and the ridges 30, 30,... Energy absorption rib 29
, The collision load is properly and reliably input from the bumper face 4 to the energy absorbing rib 29 behind the bumper face 4. As a result, FIG.
As shown in FIG. 3B, the energy absorbing ribs 29, 29,... are bent to absorb the collision energy as intended.

Therefore, according to the vehicle bumper 1 according to the first embodiment, the ribs 29, 29,... Of the energy absorbing member 7 located behind the bumper face 4 Since the ribs 29 are arranged so as to have a gap therebetween, the ribs 29, 29,. The rigidity of the bumper face 4 does not become excessively high, and the surface of the bumper face 4 does not sink.

Then, the bumper face 4
, And the front edge of the energy absorbing ribs 29, 29,.
The protrusions 30, 30,... Provided on the rear surface of the bumper face 4 are engaged with the front edges of the ribs 29, 29, and the collision load is appropriately and reliably input from the bumper face 4 to the ribs 29, 29,. The ribs 29, 2
The energy of the collision can be stably absorbed as intended by the deformation of 9,..., And the first impact at the time of the collision with the forward obstacle can be sufficiently reduced.

(Embodiment 2) FIGS. 9 to 11 show an automobile bumper 1 according to Embodiment 2 of the present invention. Since the bumper 1 of the second embodiment is the same as that of the first embodiment except for the structure of the energy absorbing member, the same members will be denoted by the same reference numerals, and description thereof will be omitted. The feature of the bumper 1 of the second embodiment resides in that the energy absorbing member is formed integrally with the bumper face 4.

That is, as shown in FIG. 10, on the back side of the bumper face 4, the vehicle width direction extends substantially horizontally toward the rear of the vehicle body from positions respectively corresponding to the upper edge and the lower edge of the bumper function part 4c. Long horizontal ribs 31, 32
Are formed between the two horizontal ribs 31, 32, a large number of energy absorbing ribs 33, 33,
Are arranged side by side in the vehicle width direction with the upper and lower ends held by horizontal ribs 31 and 32, respectively. That is,
In the second embodiment, as the energy absorbing member,
Many energy absorbing ribs 33, 33,
Are integrally formed with the bumper face 4.

The energy absorbing ribs 33 are shown in FIGS.
As shown in FIG. 1, the rear portion of the rectangular plate-shaped main body portion 33a is bent to one side in the vehicle width direction (the left side of the vehicle body in the illustrated example),
The inclined portion 33b extends away from the main body portion 33a toward the rear of the vehicle body, that is, inclines toward one side in the vehicle width direction. The main body portion 33a has the longest length in the front-rear direction of the vehicle body in the substantially central portion in the vehicle width direction, and gradually decreases toward both left and right sides from there, as in the case of the rib 29 of the first embodiment. .., The distance between the ribs 33, 33,... In the vehicle width direction gradually narrows toward both right and left ends in the vehicle width direction.

The main body 33a of the energy absorbing rib 33 is formed with a band-like upper connecting portion 33c extending upward from a substantially central position in the front-rear direction at the upper end edge thereof, and the upper end of the upper connecting portion 33c is formed. Is the upper horizontal rib 3
A lower connecting portion 33d is formed at the lower end edge of the main body portion 33a and connected to the upper surface of the lower horizontal rib 32 while being connected to the lower surface of the first main portion 33a. Further, the main body portion 33a of the energy absorbing rib 33 is provided with a two-dimensional shape so as to appropriately reduce bending rigidity while sufficiently increasing the amount of energy absorption during bending deformation.
Two circular holes 33e, 33e are provided.

On the other hand, on the back surface of the bumper face 4, energy absorbing ribs 33, 33,.
Are provided so as to be able to engage with the front edge of. In the case of the second embodiment, the ridges 34, 34,.
It is provided so as to be located on the opposite side to the direction in which 3b extends (the right side of the vehicle body in the illustrated example). In other words, on the back surface of the bumper face 4, a ridge 34 is provided only on one side (the right side of the vehicle body) in the vehicle width direction with respect to the front edge of each energy absorbing rib 33. Rib 3
An inclined portion 33b is formed at the rear portion of the rear portion 3 so as to be bent to the opposite side (left side of the vehicle body) from the ridge 34 in the vehicle width direction.

In the case of the energy absorbing rib 33 of the second embodiment, when the vehicle V collides with an obstacle ahead and the bumper face 4 is recessed rearward of the vehicle body, as shown by a virtual line in FIG. The energy absorbing rib 33 receives a rotational force from the cross member 16 of the rear reinforcement 6 via the inclined portion 33b such that the energy absorbing rib 33 falls to one side (right side of the vehicle body) in the vehicle width direction. The front edge of the rib 33 is securely engaged with the ridge 34 on the rear surface of the bumper face 4.

That is, in the case of the energy absorbing rib 33 of the second embodiment, even if the ridges 34 are not provided on the right and left sides of each rib 33 as in the first embodiment, the inclination direction of the rib 33 is , The leading edge thereof can be reliably engaged with the ridge 34, so that the load at the time of collision can be reduced from the bumper face 4 to the ribs 33, 33,.
, And the ribs 33, 33,... Are bent as shown by the solid lines in FIG.

Therefore, according to the vehicle bumper 1 according to the first embodiment, similarly to the first embodiment, the bumper face 4 has an appropriate rigidity and the first bumper against the obstacle in front of the vehicle at the time of collision. The impact can be sufficiently reduced, and the surface of the bumper face 4 can be prevented from sinking.

Further, at the time of a collision with a forward obstacle, the collision load is properly and reliably inputted from the bumper face 4 to the energy absorbing ribs 33, 33,.
The collision energy can be stably absorbed by the deformation of 3, 33,. Moreover, all the ribs 33, 33,
... will fall in the same direction.
The interference between the ribs 33, 33, 33
Can be more reliably obtained.

In addition, in the bumper 1 of the second embodiment, the bumper face 4 and the energy absorbing ribs 33, 33
Are integrally molded with resin, so that their manufacture is easy, the number of parts and the number of assembling steps can be reduced, and the manufacturing cost can be reduced.

The present invention is not limited to the configurations of the first and second embodiments, but includes various other configurations. That is, for example, in each of the above embodiments, the length of the energy absorbing ribs 29 and 33 in the vehicle longitudinal direction is gradually reduced from the substantially central position in the vehicle width direction toward the left and right ends, but is not limited thereto. Instead, the lengths of the ribs 29 and 33 may be the same regardless of the position in the vehicle width direction.

In the second embodiment, the inclined portion 33b is formed at the rear portion of the energy absorbing rib 33 so as to bend and extend toward the left side of the vehicle body.
“b” may be bent and extended toward the right side of the vehicle body. And in this case, the bumper face 4
The protruding ridge 34 on the rear surface may be provided at a position shifted leftward in the vehicle width direction from the front edge of the rib 33.

Further, in each of the above embodiments, the long ridge 30 is provided on the back surface of the bumper face 4 in the vertical direction of the vehicle body. However, the present invention is not limited to this, as long as it can be engaged with the energy absorbing ribs 29, 33. The shape of the projection may be arbitrary.

[0049]

As described above, according to the automobile bumper according to the first aspect of the present invention, the bumper reinforcement extending in the vehicle width direction is provided on the front side thereof.
A front end portion of the energy absorbing ribs, provided with an energy absorbing member having at least a plurality of energy absorbing ribs extending in the vehicle longitudinal direction arranged side by side in the vehicle width direction and a resin skin member covering them from the front of the vehicle body; A gap is provided between the skin member and the back surface of the skin member, and a protrusion engageable with the front end of the rib is formed on the back surface of the skin member. To ensure that the collision load can be input to the bumper, while making the bumper skin member moderate in stiffness and sufficiently relaxing the first impact on the front obstacle, The energy absorption performance can be stably obtained by deforming as intended.

According to the second aspect of the present invention, the projections of the skin member are provided on both sides in the vehicle width direction for each energy absorbing rib.
At the time of collision, the rib can be reliably engaged with the front end portion, so that the effect of the first aspect of the invention can be sufficiently obtained.

According to the third aspect of the present invention, the projection of the skin member is provided only on one side in the vehicle width direction for each energy absorbing rib, and the rear portion of the rib is opposite to the projection in the vehicle width direction. Is provided so as to adjust the falling direction of the rib, so that the front end of the rib is securely engaged with the projection of the skin member and prevents interference between adjacent ribs. Thus, the effect of the first aspect of the present invention can be further enhanced.

According to the fourth aspect of the present invention, the skin member and the energy absorbing member are integrally formed of resin, thereby facilitating the manufacture and reducing the number of parts and the number of assembling steps, thereby reducing the manufacturing cost. it can.

[Brief description of the drawings]

FIG. 1 is a perspective view of a front part of an automobile equipped with a bumper according to the present invention.

FIG. 2 is a front view of the bumper according to the first embodiment.

FIG. 3 is a left side view of the bumper of FIG. 2;

FIG. 4 is a top view of the bumper of FIG. 2;

FIG. 5 is a perspective view showing a configuration of a reinforcement.

FIG. 6 is a top view showing a configuration of a reinforcement and an energy absorbing member.

FIG. 7 is an end view taken along line VII-VII of FIG. 2;

FIG. 8 is an explanatory diagram schematically showing deformation of an energy absorbing rib at the time of a collision.

FIG. 9 is a diagram corresponding to FIG. 6 according to the second embodiment.

FIG. 10 is a diagram corresponding to FIG. 7 according to the second embodiment.

FIG. 11 is a diagram corresponding to FIG. 8 according to the second embodiment.

[Explanation of symbols]

 V Automobile 1 Front bumper 4 Bumper face 6 Bumper reinforcement 7 Energy absorbing member 29, 33 Energy absorbing rib 33b Inclined portion 30, 34 Convex ridge (projection)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Tsukiji 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. (72) Eiji Fujita 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. (72) Inventor Masao Hara 3-1, Fuchi-machi, Shinchu, Aki-gun, Hiroshima Prefecture Mazda Co., Ltd. (72) Inventor Yuji Matsuda 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda Co., Ltd. (72) Inventor Hiroshi Okukawa 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. (72) Inventor Masanori Ogawa 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Pref. Mazda Co., Ltd. (72) Kazuhiro Tanaka, Aki-gun, Hiroshima 3-1 Fuchi-cho Shinchi Mazda Co., Ltd.

Claims (4)

[Claims] 1. A bumper reinforcement disposed at a front portion of a vehicle body so as to extend in a vehicle width direction; and a bumper reinforcement disposed in front of the bumper reinforcement.
An automobile comprising: an energy absorbing member having at least a plurality of energy absorbing ribs extending in the vehicle longitudinal direction arranged side by side in the vehicle width direction; and a resin skin member covering the bumper reinforcement and the energy absorbing member from the front of the vehicle body. In the bumper for use, the energy absorbing member is provided so as to have a gap between a front end of an energy absorbing rib and a back surface of the skin member, and projects a predetermined amount toward the rear of the vehicle body on the back surface of the skin member; A bumper for an automobile, wherein a protrusion is provided so as to be shifted from a front end of the energy absorbing rib in a vehicle width direction. 2. The vehicle bumper according to claim 1, wherein the projections of the skin member are provided on both sides in the vehicle width direction with respect to a front end of each energy absorbing rib. 3. The energy absorbing device according to claim 1, wherein the protrusion of the skin member is provided on only one side in the vehicle width direction with respect to a front end of each energy absorbing rib. The vehicle bumper according to claim 1, further comprising: a bent portion that is bent in a vehicle width direction on a side opposite to the protrusion of the skin member and that extends so as to be inclined toward a rear end portion. 4. The automobile bumper according to claim 1, wherein the skin member and the energy absorbing member are integrally formed of resin.