JP4730018B2 - Vehicle shock absorption structure - Google Patents

Description

  The present invention relates to a structure for absorbing an impact at the time of a vehicle collision.

Generally, a vehicle wheel is disposed in a tire house. A fender protector, which is a covering member formed in an arc shape along the outer periphery of the wheel, straddles the fender panel and the inner panel. (See, for example, Patent Document 1).
Japanese Utility Model Publication No. 5-82760 (4th page, FIG. 1)

  However, in the conventional vehicle body structure in the vicinity of the wheel, particularly the shock absorbing structure of the vehicle in which the front wheels are arranged, the collision load is input to the front wheels as a longitudinal load while deforming the front bumper due to an offset collision from the front.

  Then, the longitudinal load causes the front wheel to be greatly displaced rearward while deforming the fender protector, and comes into contact with the vehicle body skeleton member located behind the front wheel, that is, the sill portions located on the left and right sides of the vehicle body floor. .

  Therefore, in the conventional fender protector, the collision load from the front due to the offset collision is not efficiently absorbed and is largely transmitted to the sill portion with the rear displacement of the front wheel.

  Therefore, the present invention adds a means for absorbing the load to the cover member of the front wheel, thereby efficiently absorbing the collision load from the front input to the front wheel and reducing the influence on the sill portion. Is to provide.

The present invention includes a cover member disposed along an outer periphery of a substantially upper portion of a front wheel of a vehicle, and absorbs a load in the vehicle front-rear direction on at least one of a wheel front side or a wheel rear side of the cover member. The vehicle body sill portion is disposed opposite to the extension line of the load absorbing means, the load absorbing means is disposed on the vehicle longitudinal direction extending through the center of the front wheel, and the vehicle body The sill portion is arranged at substantially the same height as the central portion of the front wheel, and the load absorbing means is configured as a cylindrical assembly in which a large number of cylindrical bodies arranged in the cylinder axis direction in the load input direction are arranged in parallel. The shock absorbing structure of the vehicle is characterized in that the load absorbing means is characterized in that the covering member is formed of a synthetic resin material and is integrally formed on the covering member by insert molding .

  According to the present invention, when a collision load is input from the front-rear direction of the wheel, both the front and rear end portions of the wheel and the cover member are sandwiched between the bumper and the sill portion and try to transmit the load in the sill portion direction. Since the end of the vehicle body sill portion is disposed opposite to the extension line of the load absorbing means provided on the covering member, the load absorbing means can efficiently absorb the collision load and reduce the transmission load to the sill portion. it can.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 4 show a first embodiment of a vehicle shock absorbing structure according to the present invention, FIG. 1 is a perspective view showing a vehicle body structure in the vicinity of a front wheel, and FIG. 2 is a side view showing a vehicle body structure of a front wheel part. 3 is a perspective view showing a rear end portion of the fender protector, and FIG. 4 is an enlarged perspective view of the load absorbing means.

  The impact absorbing structure for a vehicle according to this embodiment is applied to a vehicle body structure of a front wheel portion. As shown in FIGS. 1 and 2, the front wheel 1 is configured by fitting a tire 3 to an outer peripheral rim 2 a of a wheel 2. The tire house 4 on which the wheels 1 are arranged is provided at the lower part of the front fender 5, and the inner periphery of the tire house 4 is covered with a fender protector 10 as a covering member, and the fender protector 10 is formed of a synthetic resin material. Has been.

  The fender protector 10 is disposed along the outer periphery of the upper portion from the center portion 1C of the front wheel 1. The fender protector 10 absorbs the load in the vehicle front-rear direction on the front side and the rear side of the wheel 1 of the fender protector 10. Means 11F and 11R are provided, and a front end 6a of a side sill 6 as a vehicle body sill is disposed oppositely on an extension line L1 of the load absorbing means 11F and 11R to the rear of the vehicle as shown in FIG.

  The side sill 6 is a vehicle body frame member that extends in the vehicle front-rear direction on the left and right sides of the vehicle body floor.

  Further, as shown in FIG. 2, the load absorbing means 11F and 11R are arranged on an extension line L2 in the vehicle front-rear direction passing through the center portion 1C of the front wheel 1, and the side sill 6 is connected to the center portion 1C of the front wheel 1. Are arranged at substantially the same height.

  As shown in FIG. 4, the load absorbing means 11F and 11R are constituted by a cylindrical assembly 13 in which a large number of cylindrical bodies 12 arranged in the cylinder shaft 12C direction in the load input direction, that is, in a substantially longitudinal direction of the vehicle. It is.

  The cylindrical body 12 is formed in a rectangular shape in cross section, and the cylindrical aggregate 13 having a predetermined thickness t1 is formed into a substantially rectangular shape as a whole by joining a large number of cylindrical bodies 12 to each other. The cylindrical assembly 13 is arranged outside the front and rear end portions of the fender protector 10 as shown in FIG.

  As shown in FIGS. 1 and 2, a front bumper 7 is disposed in front of the front wheel 1, and a front pillar 8 stands up from the front end of the side sill 6.

  With the above configuration, according to the present embodiment, when a collision load F (see FIG. 2) is input from the front of the front wheel 1 due to an offset collision from the front, both front and rear ends 10F and 10R of the front wheel 1 and the fender protector 10 are provided. Is sandwiched between the front bumper 7 and the front end 6 a of the side sill 6 to transmit the load F in the direction of the side sill 6.

  At this time, the load absorbing means 11F is provided on the front side of the wheel 1 of the fender protector 10, the load absorbing means 11R is provided on the rear side of the wheel 1, and an extension line L1 of the load absorbing means 11F and 11R to the rear of the vehicle. Since the front end 6a of the vehicle body side sill 6 is disposed on the upper side, when the front and rear end portions 10F and 10R of the fender protector 10 are sandwiched between the front bumper 7 and the front end 6a of the side sill 6 with the front wheel 1 in the middle, the load The absorbing load 11F, 11R can efficiently absorb the collision load F and reduce the transmission load to the side sill 6.

  In the present embodiment, the load absorbing means 11F and 11R are arranged on the vehicle front-rear extension line L2 passing through the center portion 1C of the front wheel 1, so that the collision load F passes through the center portion 1C of the front wheel 1. Thus, the collision load F can be more efficiently absorbed by the load absorbing means 11F and 11R while being transmitted to the side sill 6.

  Further, since the side sill 6 is disposed at substantially the same height as the center portion 1C of the front wheel 1, the center portion 1C of the front wheel 1, the load absorbing means 11F, 11R, and the side sill 6 can be disposed substantially in a straight line. When the front and rear end portions 10F and 10R of the fender protector 10 are sandwiched between the front bumper 7 and the front end 6a of the side sill 6, the absorption efficiency of the collision load F can be further improved by the load absorbing means 11F and 11R.

  Furthermore, since the load absorbing means 11F and 11R are constituted by the cylindrical assembly 13 in which a large number of the cylindrical bodies 12 having the cylindrical axis 12C direction arranged in the load input direction are arranged in parallel, a large number of the load absorbing means 11F and 11R are input. Since the cylindrical body 12 is individually crushed and absorbs energy, the absorption efficiency of the collision load F can be further increased.

  The load absorbing means 11F and 11R may be formed integrally with the fender protector 10 formed of a synthetic resin material, or may be integrally formed with the fender protector 10 by adhesion or the like.

  By the way, in this embodiment, in addition to the above-described effects, the load absorbing means 11F and 11R function when the front wheel 1 is sandwiched between the front bumper 7 and the side sill 6, so that variation in the load absorbing effect due to the strength of the vehicle body is reduced. can do.

  In addition, the collision load F can be efficiently absorbed by a simple configuration in which the fender protector 10 is provided with the load absorbing means 11F and 11R, and it is not necessary to change the vehicle body structure, so that changes in the assembly process can be minimized.

  Furthermore, by forming the fender protector 10 from a synthetic resin material, the degree of freedom in design can be increased and the weight can be reduced.

  Furthermore, since the front load absorbing means 11F is crushed when it interferes with the front wheel 1 due to the input of the collision load F, the area for transmitting the collision load F to the wheel 1 increases and the load transmission efficiency to the wheel 1 is increased. be able to.

  Further, since the load absorbing means 11F in front is crushed at the early stage of the collision in this way, the inertial force of the wheel 1 can be stably reduced from the initial stage of the collision to suppress the ride on the collision target.

  Further, the rear load absorbing means 11R can be crushed when the front wheel 1 is pressed against the front end 6a of the side sill 6, and can change from point contact to line contact or surface contact, so that the tire 3 of the front wheel 1 is prevented from being crushed. The collision phenomenon can be stabilized.

  Furthermore, as shown in FIGS. 1 and 2, when a front member 9 or a projection outside the figure is attached to the front pillar 8, the load input point in the twist direction of the front pillar 8 acting on the member 9 is the front pillar. Since it is farther from the center of the figure 8, it is necessary to reinforce the twist of the front pillar 8. However, since the rear load absorbing means 11R is not coupled to the front pillar 8, do not need.

  FIG. 5 shows a second embodiment of the present invention, in which the same components as in the first embodiment are denoted by the same reference numerals and redundant description is omitted, and FIG. 5 is an enlarged perspective view of the load absorbing means. It is.

  As in the first embodiment, the shock absorbing structure for a vehicle according to the present embodiment is provided with load absorbing means 11F and 11R for absorbing a load in the vehicle front-rear direction on the front side and the rear side of the wheel 1 of the fender protector 10, respectively. In particular, in this embodiment, the load absorbing means 11F and 11R are formed as a honeycomb structure in which the cross section of the cylindrical body 14 is a regular hexagon as shown in FIG.

  That is, the load absorbing means 11F and 11R of the present embodiment are configured as a substantially rectangular cylindrical assembly 13A having a predetermined thickness t2 as in the first embodiment, and a unit that forms the cylindrical assembly 13A. A honeycomb structure is formed with the tubular body 14 having a regular hexagonal cross section.

  In the present embodiment, the tubular aggregate 13A having a honeycomb structure is formed using aluminum as a raw material, and the outer surface thereof is coated with a synthetic resin material.

  Therefore, according to the present embodiment, since the load absorbing means 11F and 11R have a honeycomb structure, the strength can be stably increased with respect to the input of the collision load F, and consequently the absorption efficiency of the collision load F can be increased. It can be further increased.

  Of course, the honeycomb structure is not limited to both the front and rear load absorbing means 11F and 11R, but can be applied to any one of them.

  Further, even in the present embodiment, the load absorbing means 11F and 11R may be formed integrally with the fender protector 10 formed of a synthetic resin material, or a separately formed one is bonded to the fender protector 10 or the like. May be joined together.

  FIG. 6 shows a third embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted, and FIG. 6 is an enlarged perspective view of the load absorbing means. It is.

  As in the first embodiment, the shock absorbing structure for a vehicle according to the present embodiment is provided with load absorbing means 11F and 11R for absorbing a load in the vehicle front-rear direction on the front side and the rear side of the wheel 1 of the fender protector 10, respectively. In particular, in the present embodiment, the load absorbing means 11F and 11R are formed of a foam material 15 as shown in FIG.

  That is, the load absorbing means 11F and 11R of the present embodiment are formed in a substantially rectangular shape having a predetermined thickness t3 as in the first embodiment, and the foam material 15 forming the load absorbing means 11F and 11R is a synthetic material. It is foamed using a material such as resin or light metal.

  Therefore, according to the present embodiment, since the load absorbing means 11F and 11R are formed of the foam material 15, the collision load F can be stably absorbed with light weight and low cost.

  The foam material structure is not limited to both the front and rear load absorbing means 11F and 11R, but can be applied to any one of them. In the present embodiment, the load absorbing means 11F and 11R are provided with fender protectors. 10 are bonded together by bonding or the like.

  FIG. 7 shows a fourth embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted, and FIG. 7 shows the rear end portion of the fender protector. It is a perspective view shown.

  The shock absorbing structure for a vehicle according to the present embodiment is provided with load absorbing means 11R at least on the rear side of the wheel 1 of the fender protector 10, and the load absorbing means 11R is a mud guard 16 attached to the rear end portion 10R of the fender protector 10. It is comprised by the thick part 16a formed in the upper end part.

  That is, the mud guard 16 is formed of an elastic member such as rubber, and the upper end portion of the thick portion 16a is attached to the inner side of the rear end portion 10R of the fender protector 10, and the thick portion 16a is moved to the rear of the vehicle. The front end 6a of the side sill 6 is positioned on the extended line L1, and the thick portion 16a is disposed on the extended line L2 in the vehicle front-rear direction passing through the center portion 1C of the front wheel 1.

  Further, in the present embodiment, the mud guard 16 is attached to the inside of the rear end portion 10R of the fender protector 10, so that the rear end portion 10R of the fender protector 10 is disposed close to the front end 6a of the side sill 6 and a gap between them. Is minimized.

  Therefore, according to the present embodiment, the load absorbing means 11R can be integrally provided on the mud guard 16, so that the number of parts and the number of mounting steps can be reduced.

  FIG. 8 shows a fifth embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted, and FIG. 8 shows the vehicle body structure of the front wheel portion. It is a side view.

  As in the first embodiment, the shock absorbing structure for a vehicle according to the present embodiment is provided with load absorbing means 11F and 11R for absorbing a load in the vehicle front-rear direction on the front side and the rear side of the wheel 1 of the fender protector 10, respectively. In particular, in the present embodiment, the load absorbing means 11F and 11R are integrally formed by insert molding on the fender protector 10 formed of a synthetic resin material as shown in FIG.

  That is, in this embodiment, the load absorbing means 11F and 11R are configured by a honeycomb aggregate 13A having a honeycomb structure made of aluminum as in the second embodiment, and the cylindrical aggregate 13A is used as an insert for a synthetic resin material. The fender protector 10 is molded.

  Therefore, according to the present embodiment, since the load absorbing means 11F and 11R are integrated with the fender protector 10 by insert molding, the mounting of the load absorbing means 11F and 11R is completed by assembling the fender protector 10, so the number of parts is increased. The assembly man-hours can be reduced along with the reduction of.

  Further, since the load absorbing means 11F and 11R are held by the fender protector 10 by insert molding, it is possible to prevent the load absorbing means 11F and 11R from being detached from the fender protector 10 even when an impact due to the collision load F acts, and to ensure the load absorbing function. Can fulfill.

  Of course, in the present embodiment, the insert molding is not limited to both the front and rear load absorbing means 11F and 11R, but can be applied to any one of them.

  Further, the load absorbing means 11F and 11R for insert molding are not limited to the honeycomb structure, but are shown in the cylindrical assembly 13 using the cylindrical body 12 having the rectangular cross section similar to the first embodiment or the third embodiment. It may be a foamed material 15 made of a light metal, or may be a structure having another load absorbing function.

  By the way, although this invention was demonstrated taking the example in the said 1st-5th embodiment, various other embodiment can be employ | adopted in the range which does not deviate from the summary of this invention, without being restricted to these embodiments, For example, although the front wheel portion is illustrated in the above embodiment, it can be applied to the rear wheel portion.

The perspective view which shows the vehicle body structure of the front wheel vicinity in 1st Embodiment of this invention. The side view which shows the vehicle body structure of the front-wheel part in 1st Embodiment of this invention. The perspective view which shows the rear-end part of the fender protector in 1st Embodiment of this invention. The expansion perspective view of the load absorption means in 1st Embodiment of this invention. The expansion perspective view of the load absorption means in 2nd Embodiment of this invention. The expansion perspective view of the load absorption means in 3rd Embodiment of this invention. The perspective view which shows the rear-end part of the fender protector in 4th Embodiment of this invention. The side view which shows the vehicle body structure of the front-wheel part in 5th Embodiment of this invention.

Explanation of symbols

1 Front wheel 6 Side sill (body sill)
10 Fender protector (covering member)
11F, 11R Load absorbing means 12, 14 Tubular body 12C Tubular shaft 13, 13A Tubular assembly 15 Foam material 16 Mudguard 16a Thick part

Claims (2)

A cover member disposed along an outer periphery of a substantially upper portion of the front wheel of the vehicle, and provided with load absorbing means for absorbing a load in the vehicle front-rear direction on at least one of a wheel front side or a wheel rear side of the cover member , On the extension line of the load absorbing means, the end portion of the vehicle body sill portion is disposed oppositely ,
The load absorbing means is disposed on an extension line in the vehicle front-rear direction passing through the center of the front wheel,
The vehicle body sill portion is arranged at substantially the same height as the center portion of the front wheel,
A vehicle impact absorbing structure in which the load absorbing means is configured as a cylindrical assembly in which a large number of cylindrical bodies arranged in the cylinder axis direction in the load input direction are arranged in parallel.
The impact absorbing structure for a vehicle, wherein the load absorbing means is formed by forming the covering member from a synthetic resin material, and integrally forming the cylindrical aggregate on the covering member by insert molding . The tubular assembly, the shock absorbing structure for a vehicle according to claim 1, characterized in that the cross section of the tubular body is constructed from honeycomb structure as a regular hexagon.

Images