JP2006021603A - Bumper structure for protecting pedestrian's leg part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bumper structure for protecting a pedestrian's leg part capable of cushioning an impact given to the contacted pedestrian's leg while holding predetermined amount of energy absorption. <P>SOLUTION: The bumper structure has a bumper reinforcement 2 approximately horizontally extended along the width direction of a vehicle body 1 and a bumper fascia member 9 covering a bumper lateral surface part. The protection bumper structure is provided with a plurality of shock absorption pad members 10 having a pad body 11 supported by a pad support member 12 at a predetermined interval so as to be constituted movable a predetermined distance in the vehicle width direction along the front surface part 2a of the bumper reinforcement 2 by inputting the load from the bumper fascia member 9 between the bumper fascia member 9 and the bumper reinforcement 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pedestrian leg protection bumper structure that can be used in a bumper portion of a vehicle and can alleviate an impact given to a pedestrian in contact while maintaining a predetermined energy absorption amount.

  Conventionally, as a pedestrian leg part protection bumper structure, what is shown, for example in FIG. 18 or FIG. 19 is known (for example, refer patent document 1 etc.).

  In such a thing, the bumper reinforcement 2 is installed in the front part of the vehicle body 1 of the automobile along the vehicle width direction.

  A shock absorbing member 3 is mounted on the front surface of the bumper reinforcement 2 in the front direction of the vehicle body, and a bumper facer member 4 that covers and supports a part of the bumper reinforcement 2 and the shock absorbing member 3 is provided. Is provided.

  The shock absorbing member 3 is formed with a concave portion 3a in the shape of a concave groove along the vehicle width direction at a substantially central position in the vertical direction on the front side in the vehicle front direction.

  In this conventional structure, the recess 3a of the shock absorbing member 3 has a longitudinal cross-sectional area in the longitudinal direction of the vehicle that gradually decreases from the substantially central portion in the vehicle width direction toward the left and right corner portions. It is configured.

  Next, the operation of this conventional pedestrian leg protection bumper structure will be described.

  In this conventional pedestrian leg protection bumper structure, the concave portion 3a of the impact absorbing member 3 has a longitudinal cross-section in the vehicle front-rear direction regardless of the position of the bumper fascia member 4 in the width direction. Since the cross-sectional area is configured to gradually decrease from the substantially central portion in the vehicle width direction toward the left and right corner portions, a large load change due to the position in the vehicle width direction can be reduced.

For this reason, the impact energy absorption efficiency of the impact absorbing member 3 can be improved.
Japanese Patent Publication No. 6-15316 (FIGS. 1 and 4)

  However, in the conventional pedestrian leg protection bumper structure configured as above, priority is given to reducing the load applied to the leg of the pedestrian as the shock absorbing member 3, and a soft material pad is used. Conceivable.

  In such a case, there was a risk that the wall surface or the like could not absorb a large amount of energy when it collided.

  In addition, when a pad made of a hard material is adopted on the wall surface in consideration of energy absorption at the time of collision, there is a problem that a load applied to the leg part of the pedestrian is increased.

  In view of the above circumstances, an object of the present invention is to provide a pedestrian leg protection bumper structure that can reduce a shock applied to a pedestrian's leg that is in contact while maintaining a predetermined energy absorption amount.

  In order to achieve the above object, the invention according to claim 1 includes a bumper reinforcement that extends substantially horizontally along the vehicle width direction of the vehicle body, and a bumper fascia member that covers the outer surface of the bumper. Between the bumper fascia member and the bumper reinforcement, an impact absorber configured to be movable a predetermined distance in the vehicle width direction along the front surface portion of the bumper reinforcement by a load input from the bumper faucet member. It features a pedestrian leg protection bumper structure in which a plurality of pad members are provided at predetermined intervals.

  According to a second aspect of the present invention, the shock absorbing pad member faces the shock absorbing pad member facing surface of the bumper fascia member so that either the left or right side of the shock absorbing pad member can be easily moved in the vehicle width direction. The pedestrian leg protection bumper structure according to claim 1, wherein the protrusion is formed.

  Further, according to a third aspect of the present invention, the bumper fascia facing surface of the shock absorbing pad member is an uneven surface that facilitates movement of the shock absorbing pad member in the left or right vehicle width direction. The pedestrian leg protection bumper structure according to claim 1 or 2, wherein the pedestrian leg protection bumper structure is formed.

  According to the first aspect of the present invention configured as described above, a plurality of the shock absorbing pad members are provided at a predetermined interval. Therefore, at the time of a frontal collision, the plurality of shock absorbing pad members are planar. By receiving the input load, a desired reaction force can be obtained.

  The impact absorbing pad member is configured to be movable a predetermined distance in the vehicle width direction along the front surface portion of the bumper reinforcement.

  Therefore, when a pedestrian's leg or the like comes into contact with a part of the bumper fascia member, the corresponding shock absorbing pad member is moved in the vehicle width direction along the front surface portion of the bumper reinforcement. The load input is absorbed while moving a predetermined distance.

  Therefore, it is possible to mitigate the impact given to the leg of the pedestrian that has come into contact while maintaining a predetermined amount of energy absorption required for a frontal collision or the like.

  Further, according to a second aspect of the present invention, when a load is input, the shock absorbing pad member can be easily left or right by a protrusion formed on the shock absorbing pad member facing surface of the bumper fascia member. It is moved toward either vehicle width direction.

  For this reason, it is possible to reliably absorb the load input while moving the shock absorbing pad member by a predetermined distance in the vehicle width direction.

  Further, according to the third aspect of the present invention, when a load is input, the shock absorbing pad member can be easily left or right by the uneven portion formed on the bumper facer facing surface of the shock absorbing pad member. Move in one vehicle width direction.

  For this reason, the load input can be absorbed more reliably while the shock absorbing pad member is moved a predetermined distance in the vehicle width direction.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  The same or equivalent parts as those in the conventional example will be described with the same reference numerals.

  1 to 17 show a pedestrian leg protection bumper structure according to an embodiment of the present invention.

  First, in terms of configuration, in this embodiment, as shown in FIG. 4, front and rear bumpers 7c and 7d are mounted on the front part 7a or the rear part 7b of the vehicle body 7 of the automobile 6.

  Of these, the front and rear bumpers 7c and 7d have substantially the same structure. Therefore, a description will be given using the front bumper 7c as shown in FIG. 1. Inside the front bumper 7c is a pair of side member members. A metal bumper reinforcement 2 is fixedly attached to the front end edges of 8, 8, and is provided so as to extend substantially horizontally along the vehicle width direction.

  The bumper reinforcement 2 is partially covered by a bumper fascia member 9 that covers the outer surface of the front bumper 7c.

  Between the bumper fascia member 9 and the bumper reinforcement 2, a plurality of shock absorbing pad members 10 are provided at predetermined intervals.

  The shock absorbing pad member 10 is mainly composed of a cylindrical pad main body 11 provided with its axial direction along the vertical direction, and the pad main body 11 with respect to the front surface portion 2 a of the bumper reinforcement 2. A pad support that is mounted at intervals and bent by a load input from the bumper faucet member 9 so that it can move a predetermined distance in the vehicle width direction along the direction in which the front surface portion 2a of the bumper reinforcement 2 extends. And a member 12.

  Further, the pad main body 11 of the shock absorbing pad member 10 is made of a member that is more flexible than the bumper fascia member 9, and is easily crushed and deformed until a certain load is input. When there is a load input exceeding a certain level, the load input is crushed and deformed so that the load input can be relaxed.

  Further, the pad main body 11 has a substantially circular shape in the horizontal cross section, and the bumper fascia facing surface 11a on the vehicle front side is curved in an arc shape as shown in FIG. The pad main body 11 rolls in the vehicle width direction of either the left or right side due to a part of the facing surface 9a of the bumper fascia member 9 being in contact, and the pad support member 12 is bent by further load input. The pad body 11 is formed so that it can be easily moved.

  Further, the pad support member 12 of this embodiment is made of a relatively weak metal, and when load input from the bumper fascia member 9 is applied to the shock absorbing pad member 10, the pad support member 12 is crushed or It is configured to be able to bend and deform toward the left and right.

  In the bumper facer member 9, the rib portions 20 as a plurality of flat plate rib-shaped protrusions are spaced from the opposing surface 9 a at a certain interval on the portion facing each shock absorbing pad member 10. , Projecting integrally.

  As shown in FIG. 9, the rib portion 20 is erected substantially vertically from the facing surface 9 a, and the tip 20 a faces the top of the bumper facing surface 11 a of the pad main body 11 on a one-to-one basis. It is provided as follows.

  Then, when the bumper fascia member 9 moves rearward of the vehicle, the tip 20a of the rib portion 20 is brought into sliding contact with the bumper fascia facing surface 11a, so that either the left or right side of the shock absorbing pad member is placed. Is formed so as to facilitate movement in the vehicle width direction.

  Further, as shown in FIG. 3, the bumper fascia facing surface 11a is formed with an uneven portion 13.

  The concavo-convex portion 13 is mainly composed of a concave groove portion 14 that is recessed and formed at a depth that allows the rib portions 20 to be immersed therein, and a peak portion that is integrally provided from substantially the center of the bottom surface 14 a of the concave groove portion 14. 15.

  Among these, the peak portion 15 is formed such that the crown portion 15b with the inclined surface portions 15a, 15a curved toward the left and right objects as a ridge has a substantially acute shape, and the tip portion 20a of the rib portion 20 By positioning the bumper facing member 9 against the bumper fascia member 9 from the front of the vehicle, when a pedestrian's leg 16 or the like comes into contact with the bumper fascia member 9 and a load is input, the bumper fascia member 9 is along one of the inclined surface portions 15a and 15a. The leading end 20a of the rib portion 20 is configured to slide down into the concave groove portion 14 and be guided.

  For this reason, the impact absorbing pad member 10 whose direction of movement to the left or right has been determined has the pad main body 11 in the left or right vehicle width direction due to the bending of the pad support member 12. Furthermore, it is comprised so that it can be moved easily.

  Next, the operation of this embodiment will be described.

  First, the case where the pedestrian's leg 16 abuts on a portion of the outer surface of the bumper facer member 9 where the shock absorbing pad members 10, 10 are not provided will be described with reference to FIG. .

  In this embodiment, as shown in FIG. 5 (a), a pedestrian's leg is formed on a portion of the outer surface of the bumper fascia member 9 where the shock absorbing pad members 10, 10 are not provided. When the portion 16 comes into contact, as shown in FIG. 5B, only the bumper fascia member 9 starts to deform so as to be recessed toward the bumper reinforcement 2 direction.

  Next, as shown in FIG. 5 (c), the rib portion 20 provided on the facing surface 9a of the bumper fascia member 9 comes into contact with the bumper facing surface 11a of the pad main body 11 and is in sliding contact therewith. As a result, the shock absorbing pad members 10 and 10 move a predetermined distance in the vehicle width direction indicated by the white arrow in the drawing along the direction in which the front surface portion 2a of the bumper reinforcement 2 extends.

  At this time, as shown in FIG. 6, the rib portion 20 moves toward the concavo-convex portion 13 formed on the bumper facer facing surface 11 a of the pad main body 11 of the shock absorbing pad member 10, The rib portion 20 is immersed in either the left or right groove portion 14.

  For this reason, the input load applied to the shock absorbing pad member 10 becomes uneven on the left and right, and the shock absorbing pad members 10 and 10 are easily moved toward the left or right vehicle width direction. The

  Since the deformation up to this point does not cause the deformation to crush the shock absorbing pad member 10, these load inputs are effective due to the relatively flexible deformation of the bumper fascia member 9 and the pad support members 12 and 12. To be absorbed.

  Accordingly, the reaction force applied to the leg portion 16 of the pedestrian is small, and the occurrence of injury to the leg portion 16 can be further reduced.

  Further, as shown in FIG. 5D, when the deformation proceeds, the pad support members 12 and 12 are crushed by being pressed against the pad main bodies 11 and 11 of the shock absorbing pad members 10 and 10, respectively.

  Therefore, when the pedestrian's leg 16 or the like comes into contact with a part of the bumper fascia member 9, in addition to the deformation of the bumper fascia member 9 at the contact part, the left and right of the contact part While the corresponding shock absorbing pad members 10, 10 positioned at a position move along the front surface portion 2 a of the bumper reinforcement 2 by a predetermined distance in the vehicle width direction, this load input is absorbed and the relatively flexible The input load is effectively absorbed in three stages by the crushing deformation of the pad support member 12 made of any material in the vehicle longitudinal direction.

  Therefore, the impact given to the leg part 16 of the pedestrian who contacted can be relieved with a more favorable load absorption characteristic.

  As shown in FIG. 5 (d), the pad main bodies 11, 11 of the shock absorbing pad members 10, 10 are connected to the front surface portion 2a of the bumper reinforcement 2 and the opposing surface 9a of the bumper facer member 9, respectively. If it will be in the state pinched | interposed in between, the approach to the bumper of the leg part 16 of the said pedestrian will be complete | finished.

  Next, a case where the pedestrian's leg 16 abuts on a portion of the outer surface of the bumper fascia member 9 where the shock absorbing pad member 10 is provided will be described with reference to FIG. As shown in FIG. 7A, when the pedestrian leg 16 comes into contact with a portion of the outer surface of the bumper fascia member 9 where the shock absorbing pad member 10 is provided, FIG. As shown in the middle (b), the bumper fascia member 9 is deformed so as to be recessed in the direction of the bumper reinforcement 2, and the rib portion 20 provided on the facing surface 9a of the bumper fascia member 9 includes: The pad main body 11 is in contact with the bumper facer facing surface 11a.

  At this time, as shown in FIG. 3, the top 15 b of the peak portion 15 formed so as to exhibit the substantially acute angle shape is positioned so as to face the tip 20 a of the rib portion 20.

  For this reason, the leading end 20a of the rib portion 20 enters the concave groove 14 on either the left or right side of the crown portion 15b, and the rib portion 20 extends along either the inclined surface portion 15a. The tip 20a is slid down to the vicinity of the bottom surface portion 14a in the concave groove portion 14 and guided.

  For this reason, the input load applied to the shock absorbing pad member 10 is uneven on the left and right, and in this embodiment, as shown in FIG. The pad support member 12 is moved while being bent in the direction indicated by the arrow.

  When the deformation further proceeds, as shown in FIG. 7 (c), the pad main body 11 is pressed against the pad main body 11 of the shock absorbing pad member 10 and the pad supporting member 12 is crushed. The load input is absorbed while moving to.

  At this time, the tip 20a of the rib portion 20 has already slipped out of the left or right concave groove 14 and slidably contacted with the bumper fascia facing surface 11a. Move.

  Then, as shown in FIG. 7D, the pad main body 11 of the shock absorbing pad member 10 is sandwiched between the front surface portion 2a of the bumper reinforcement 2 and the opposing surface 9a of the bumper facer member 9. In this state, the pedestrian's leg 16 enters the bumper.

  Next, a case where the front bumper 7c of this embodiment abuts against a substantially flat wall 17 made of concrete in a so-called full-wrap frontal collision that collides frontally with an obstacle will be described with reference to FIG. .

  In this embodiment, as shown in FIGS. 8 (a) and 8 (b), the bumper fascia member 9 is substantially uniformly applied to the substantially flat wall 17 made of concrete by the full-wrap frontal collision. When in contact, the bumper fascia member 9 is moved toward the rear of the vehicle by a load input from the wall 17, and a plurality of impact absorbing pad members 10, 10 are provided at predetermined intervals. Therefore, start moving in the vehicle width direction individually.

  At this time, as shown in FIG. 3, the top 15 b of the peak portion 15 formed so as to exhibit the substantially acute angle shape is positioned so as to face the tip 20 a of the rib portion 20.

  For this reason, the leading end 20a of the rib portion 20 enters the concave groove 14 on either the left or right side of the crown portion 15b, and the rib portion 20 extends along either the inclined surface portion 15a. The tip 20a is slid down to the vicinity of the bottom surface portion 14a in the concave groove portion 14 and guided.

  For this reason, the input load applied to the shock absorbing pad member 10 is uneven on the left and right, and in this embodiment, as shown in FIG. The pad support members 12 are moved without bending in the direction indicated by the white arrow on the right side while being bent.

  Further, as the deformation progresses, as shown in FIG. 8 (c), the pad body 11 is pressed against the pad body 11 of the shock absorbing pad member 10 and the pad support members 12 are crushed. The load input is absorbed while the main bodies 11 are further moved in the vehicle width direction.

  Then, when the load input is larger as in the case of the front full-wrap collision, as shown in FIG. 8 (d), the pad bodies 11 positioned at substantially equal intervals are crushed substantially evenly, Load input is absorbed.

  For this reason, at the time of a front full wrap collision, the plurality of impact absorbing pad members 10 are formed into a planar shape and receive a load input to the bumper fascia member 9 to obtain a desired reaction force.

  Further, as shown in FIGS. 5 and 7, even when the pedestrian's leg portion 16 comes into contact, the pad main body 11 does not generate a reaction force, so that it is harder than the conventional shock absorbing member 3. Can be used, and can generate a larger reaction force than the conventional shock absorbing member 3 in the case of a front full-wrap collision that contacts the wall 17 as shown in FIG. Can be.

Therefore, it is possible to mitigate the impact given to the leg of the pedestrian that has come into contact while maintaining a predetermined amount of energy absorption required for a frontal collision or the like.
[Modification 1]
FIG. 10 shows a triangular mountain portion 30 as a projection portion according to a modification of the embodiment of the present invention.

  Note that portions that are the same as or equivalent to those in the above-described embodiment are described with the same reference numerals.

  The triangular mountain portion 30 of this modified example 1 has a horizontal cross section substantially having a constant inner angle from the facing surface 9a of the bumper facer member 9 facing the respective shock absorbing pad members 10 to the tip portion 30a. A plurality of protrusions are formed so as to form a regular triangle shape and are integrated at a predetermined interval.

Other configurations and operational effects are the same as or equivalent to those of the above-described embodiment, and thus description thereof is omitted.
[Modification 2]
FIG. 11 shows a round summit portion 40 as a protruding portion according to a modification of the embodiment of the present invention.

  Note that portions that are the same as or equivalent to those in the above-described embodiment are described with the same reference numerals.

  The round crest portion 40 of this modification 2 is a round shape having a substantially trapezoidal horizontal cross section from the facing surface 9a facing each of the shock absorbing pad members 10 of the bumper facer member 9 and having a tip 40a as a semicircular arc. A plurality of protrusions are formed so as to form a summit shape and be integrated at a predetermined interval.

  Other configurations and operational effects are the same as or equivalent to those of the above-described embodiment, and thus description thereof is omitted.

  In Example 1 of this embodiment shown in FIGS. 12 to 17, the reaction force of the pedestrian leg protection bumper structure of the embodiment of the present application is calculated with a comparative example with the conventional configuration. .

  Note that portions that are the same as or equivalent to those in the above-described embodiment are described with the same reference numerals.

  In the first embodiment, when the pedestrian's leg 16 is in contact with the contact length (substantially diameter dimension) L, only the bumper fascia member 9 as shown in FIG. In the case of the long impact absorbing member 3 provided directly on the conventional bumper reinforcement 2 as shown in FIG. 13, the reaction force a generated in the case of the impact absorbing pad member 10 according to the embodiment of the present application. , B, c are represented by a graph with the load input and the displacement amount as the vertical and horizontal axes.

  In the case of the conventional shock absorbing member 3, the reaction force generated when the bumper fascia member 9 is added and collides with the leg portion 16 is (a + b).

  The reaction force of the shock absorbing pad member 10 according to the embodiment of the present application is c by itself, and even if the reaction force of the bumper fascia member 9 is applied (a + c), the initial displacement is relative to the input load input. The reaction force is large and smaller than that of the shock absorbing member 3.

  However, as shown in FIG. 15, the bumper reinforcement 2 has a plurality of shock absorbing pad members 10 having a plurality of diameters L2 at predetermined intervals L3 along the direction in which the bumper reinforcement 2 extends. (Dimensions L1, L2, and L3 are approximately the same for the sake of explanation), as shown in FIG. 17, when a front full-wrap collision occurs with the wall 17, the reaction force is (9a + 5c). Become.

  Compared to this, in the conventional shock absorbing member 3 as shown in FIG. 16, the reaction force is (9a + 9b).

  For this reason, the conventional shock absorbing member 3 is made by making the pad main body 11 of each shock absorbing pad member 10 of the above-described embodiment with a hard material about 1.8 times or more that of the conventional shock absorbing member 3. The reaction force of the configuration using the shock absorbing pad member 10 of the above embodiment can be made larger than the reaction force of the configuration using.

  Therefore, solving the seemingly contradictory problems such as reducing the reaction force in a collision with a pedestrian that could not be achieved using the conventional shock absorbing pad member 3 and increasing the reaction force in a collision with a wall surface, There is a practically beneficial effect that is achieved by the pedestrian leg protection bumper structure of the embodiment.

  Although the best embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are possible. Are included in the present invention.

  For example, in the above-described embodiment, the shock absorbing pad member 10 having the cylindrical pad body 11 provided with the axial direction along the vertical direction and having a horizontal cross-sectional shape of a substantially perfect circle is used. Although it has been described, the present invention is not limited to this, for example, an oval or oval horizontal cross section, a spherical outer diameter, or the like along the front surface of the bumper reinforcement, in the vehicle width direction. Any shape, quantity, and material may be used as long as they can be moved by a predetermined distance.

  In addition, the pad support member 12 of the embodiment is made of a relatively weak metal, but is not limited to this. For example, the pad support member 12 is crushed including a resin or an elastic material such as a spring member. Alternatively, the shape, quantity, and material are not particularly limited as long as the material is formed of a relatively low-strength material that is easily bent and deformed.

  Further, the rib portions 20 formed integrally and projecting on the bumper facer member 9 are made of the same resin material as the bumper facer member 9. However, the present invention is not limited to this. For example, a spring member, rubber, etc. You may be comprised with elastic materials, such as a member, other resin materials, metal materials, or a wooden material, and a shape, quantity, and a material are not specifically limited.

  In the above-described embodiment, the front bumper 7c has been described by exemplifying a so-called full-wrap frontal collision in which the front bumper 7c collides frontally with an obstacle. However, the wall 17 is also substantially flat in an offset frontal collision. If it has a surface, substantially the same effect as the full-wrap frontal collision can be exhibited.

FIG. 5 shows a pedestrian leg protection bumper structure according to an embodiment of the present invention, and is a cross-sectional view at a position along the line AA in FIG. 4. It is an expanded sectional view of the B section in Drawing 1 with the pedestrian leg protection bumper structure of an embodiment. FIG. 3 is a detailed cross-sectional view of a portion C in FIG. 2 in the pedestrian leg protection bumper structure of the embodiment. 1 is a perspective view of a vehicle to which a pedestrian leg protection bumper structure of an embodiment is applied. In the pedestrian leg protection bumper structure of the embodiment, the displacement when the pedestrian's leg abuts on the portion where the shock absorbing pad member is not provided is represented in the horizontal sectional direction ( a) is a schematic diagram showing a state in which a pedestrian's leg is in contact with the outer surface, and (b) is a schematic diagram showing a state in which the bumper fascia member is deformed so as to be recessed in the bumper reinforcement direction. (C) is a schematic view showing a state in which the shock absorbing pad member moves a predetermined distance in the vehicle width direction indicated by a white arrow in the drawing along the direction in which the front portion of the bumper reinforcement extends. It is a schematic diagram which shows a mode that a pad support member is crushed. It is a pedestrian leg part protection bumper structure of an embodiment, and is a detailed sectional view of D section in Drawing 5 (c). In the pedestrian leg protection bumper structure of the embodiment, the displacement when the pedestrian's leg abuts against the portion where the shock absorbing pad member is provided is expressed in the horizontal cross-sectional direction. Is a schematic diagram showing the appearance of the pedestrian's legs contacting the outer surface, (b) the bumper fascia member is deformed so as to be recessed in the bumper reinforcement direction, the shock absorbing pad member is Schematic diagram showing a state of moving a predetermined distance in the vehicle width direction indicated by the white arrow in the figure along the direction in which the front portion of the bumper reinforcement is extended, (c) is the shock absorbing pad member, and the bumper rain The schematic diagram which shows a mode that a predetermined distance moves to the vehicle width direction shown by the white arrow in a figure along the front surface part extension direction of a force, (d) is a schematic diagram which shows a mode that a pad support member is crushed. . In the pedestrian leg protection bumper structure of the embodiment, the wall represents the displacement in the case of a front full-wrap collision in the horizontal cross-sectional direction, (a) is a schematic diagram showing a state before the collision, (b) The bumper fascia member moves in the direction of the bumper reinforcement, and the shock absorbing pad member is predetermined in the vehicle width direction indicated by the white arrow in the figure along the direction in which the front surface of the bumper reinforcement extends. Schematic diagram showing how the distance moves, (c), the pad support member is crushed, the shock absorbing pad member is further indicated by a white arrow in the drawing along the direction in which the front portion of the bumper reinforcement extends. The schematic diagram which shows a mode that a predetermined distance moves to a vehicle width direction, (d) is a schematic diagram which shows a mode that a pad main body is also crushed in addition to a pad support member. It is an expanded sectional view of the horizontal direction explaining the structure of the rib part integrally provided in the opposing surface of a bumper fascia member by the pedestrian leg part protection bumper structure of embodiment. It is a horizontal expanded sectional view explaining the structure of the triangular mountain part integrally provided in the opposing surface of a bumper fascia member by the pedestrian leg part protection bumper structure of the modification 1 of embodiment. It is a horizontal expanded sectional view explaining the structure of the round-top mountain part integrally provided in the opposing surface of a bumper fascia member by the pedestrian leg part protection bumper structure of the modification 2 of embodiment. It is a pedestrian leg part protection bumper structure of the Example of embodiment, (a) is a graph figure which shows the reaction force characteristic in the bumper fascia member single-piece | unit shown as a comparative example, (b) is a schematic diagram of a structure. . It is a pedestrian leg part protection bumper structure of the Example of embodiment, (a) is a graph figure which shows the reaction force characteristic of the conventional impact-absorbing member shown as a comparative example, (b) is a schematic diagram of a structure. . In the pedestrian leg protection bumper structure of the embodiment of the embodiment, (a) is a graph showing the reaction force characteristics of the shock absorbing pad member alone of the embodiment, and (b) is a schematic diagram of the configuration. is there. It is a schematic diagram of the structure using five shock absorption pad members of embodiment by the pedestrian leg protection bumper structure of the Example of embodiment. It is a schematic diagram of the structure of the conventional impact-absorbing member shown as a comparative example by the pedestrian leg part protection bumper structure of the Example of embodiment. It is a schematic diagram showing a mode that it collides front with a wall by the structure of the impact-absorbing member of this application as a comparative example by the pedestrian leg part protection bumper structure of the Example of embodiment. It is a front view of the vehicle front part, showing a conventional pedestrian leg protection bumper structure. It is sectional drawing in the position along the EE line in FIG. 18 which shows the conventional pedestrian leg part protection bumper structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 2 Bumper reinforcement 2a Front part 9 Bumper fascia member 9a Opposing surface 10 Shock absorption pad member 11 Pad body 11a Bumper fascia opposing surface 13 Concavity and convexity projection part 20 Rib part 30 Mountain part 40 Round top mountain part

Claims (3)

  A bumper reinforcement that extends substantially horizontally along the vehicle width direction of the vehicle body, and a bumper faucet member that covers the outer surface of the bumper, and the bumper reinforcement and A plurality of shock absorbing pad members configured to move a predetermined distance in the vehicle width direction along the front surface of the bumper reinforcement by a load input from a bumper fascia member are provided at predetermined intervals. A pedestrian leg protection bumper structure.   The bumper fascia member is provided with a protrusion that facilitates movement in the vehicle width direction on either the left or right side of the shock absorbing pad member on the shock absorbing pad member facing surface. The pedestrian leg protection bumper structure according to claim 1. The bumper fascia facing surface of the shock absorbing pad member is formed with a concavo-convex portion that facilitates movement of the shock absorbing pad member in either the left or right vehicle width direction. Item 3. A pedestrian leg protection bumper structure according to item 1 or 2.

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