JPH10316043A - Car body structure for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain a decrease in the angle of an ankle of an occupant caused by deformation of a dash board to the utmost so as to lessen the bending load applied to the ankle by providing a support plate having a toe board surface to which a sole of a occupant is faced, which is formed separately from a dash board in the rear of the dash board. SOLUTION: At the time of an automobile's collision, the vertical part Dv and an inclined lower end part of a dash board D are sometimes deformed in such a manner that the toe corresponding part is pushed out backward by the deformation and backward displacement of a side frame or the like. In such a case, according to the deformation of the dash board D, an inclined plate part 3 and a horizontal plate part 4 which are not in the connecting state to the car body F are advanced in parallel backward to push out the heel part of an occupant backward, and moreover the amount of deformation of the support plate 1 itself is kept smaller than that of the dash board D. Thus, a decrease of angle of an occupant's ankle caused by the deformation of the dash board D can be restrained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure of an automobile, and more particularly to a structure around a lower portion of a dashboard.

[0002]

2. Description of the Related Art As shown in FIG. 12, a vehicle body structure in which a rear end of a side frame extending in a front-rear direction of a vehicle body in a front side of a vehicle compartment is connected to a front surface of a dashboard has been widely known. (See, for example, Sankaido, “Automotive Engineering Complete Book, Vol. 13, Passenger Car Body,” pp. 20-23).

[0003]

In the above-mentioned automobile,
When a large collision load is applied to the vehicle body from the front due to a collision or the like, the portion corresponding to the toe at the bottom of the dashboard is deformed so as to protrude rearward due to deformation of the side frame or backward displacement, etc. In some cases, the occupant's toe is pushed back, and in this case, the occupant's ankle is subjected to a bending load so that the angle θ between the toe and the shin (hereinafter simply referred to as an ankle angle) decreases.

In order to suppress the decrease in the ankle angle,
It is conceivable to provide a thick pad material at the lower part of the dashboard, but in this case, there is a disadvantage that the use of the thick pad material narrows the foot space. In addition, in order to suppress the decrease in the ankle angle, the rigidity of the lower part of the dashboard and its surroundings may be specially increased by using reinforcing materials, but the use of such reinforcing materials will significantly increase the weight and cost of the vehicle. There are inconveniences such as an increase and a significant decrease in the foot space.

The present invention has been proposed in view of the above circumstances, and even when a portion of a dashboard hit by a foot portion is deformed so as to protrude rearward due to a collision of an automobile, a thick pad material or the like can be used. It is an object of the present invention to provide a vehicle body structure of a vehicle that can suppress a decrease in an ankle angle of a front seat occupant without using a reinforcing material and effectively reduce a bending load applied to the ankle. Aim.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, there is provided an automobile body structure in which a rear end portion of a side frame of a vehicle body at a front side of a vehicle compartment is connected to a front surface of a dashboard. A support plate formed separately from the dashboard having a toeboard surface facing the sole of the vehicle is provided at the rear of the dashboard, and the amount of deformation of the support plate when a collision load acts on the side frame from the front Is designed to be less than the amount of deformation of the dashboard. According to this feature, even if the portion of the dashboard hit by the foot portion is deformed so as to protrude rearward due to the collision of the vehicle, the amount of deformation of the support plate behind the dashboard (occupant side) is small. Therefore, even if a thick pad material or a reinforcing material is not specially used, a decrease in an ankle angle of an occupant due to the above-described deformation of the dashboard is suppressed as much as possible, and a bending load applied to the ankle is reduced.

According to a second aspect of the present invention, in addition to the features of the first aspect, the support plate is connected to a vertical plate portion connected to the dashboard, and the lower surface of the vertical plate portion is connected to the toe board. It is composed of an inclined plate portion serving as a surface and a horizontal plate portion connected to a lower end of the inclined plate portion, and the horizontal plate portion and the inclined plate portion are placed in a non-coupled state with respect to the vehicle body. According to this feature, according to the deformation of the dashboard, the inclined plate portion and the horizontal plate portion of the support plate which are not connected to the vehicle body can translate rearward and push the heel portion of the occupant rearward, The decrease in the ankle angle of the occupant caused by the deformation of the dashboard is further suppressed, and the bending load applied to the ankle is effectively reduced.

According to a third aspect of the present invention, in addition to the features of the first or second aspect, the support plate interlocks with the deformation of the dashboard when a collision load acts on the side frame from the front. According to this feature, the support plate can slide rearward and push out the heel portion of the occupant rearward in accordance with the above-described deformation of the dashboard. The accompanying decrease in the ankle angle of the occupant is further suppressed.

In addition, in particular, the invention according to claim 4 is characterized in that, in addition to the feature of the invention according to claim 3, when the support plate slides backward, guide means for guiding the slide and suppressing floating of the support plate are provided. It is characterized by being provided between the plate and the vehicle body. According to this feature, the support plate can be smoothly slid rearward without being lifted in accordance with the above-described deformation of the dashboard, so that the heel portion of the occupant can always be accurately pushed to the rear and the dashboard can be pushed out. The decrease in the ankle angle of the occupant due to the above deformation is further suppressed.

According to a fifth aspect of the present invention, in addition to the features of the first aspect, the lower end of the support plate interlocks with the deformation of the dashboard when a collision load acts on the side frame from the front. It is characterized in that the part rotates so as to be displaced rearward. According to this feature, the heel portion of the occupant can be pushed rearward by the rotation of the support plate according to the deformation of the dashboard, so that a decrease in the ankle angle of the occupant due to the deformation of the dashboard can be further suppressed. .

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below based on embodiments of the present invention illustrated in the accompanying drawings.

1 to 3 show a first embodiment of the present invention. In particular, FIG. 1 is a perspective view of a foot on a passenger side of a passenger compartment, and FIG. 2 is 2-2 of FIG. FIG. 3 is a sectional view taken along the line
FIG. 3 is a sectional view similar to FIG. 2, showing a deformed state at the time of a vehicle collision. 4 to 7 show a second embodiment of the present invention. In particular, FIG. 4 is a perspective view of the foot on the passenger seat side of the passenger compartment, and FIG.
6 is an enlarged perspective view of a part 5 in FIG. 4, FIG. 6 is a sectional view taken along line 6-6 of FIG. 4, and FIG. 7 is a sectional view similar to FIG. 6, showing a deformed state at the time of a vehicle collision. FIG. 8 is a sectional view similar to FIG. 6, showing a modification of the second embodiment. 9 to 11 show a third embodiment of the present invention. In particular, FIG. 9 is a perspective view of the feet of the driver's seat and the passenger seat, and FIG.
FIG. 11 is a sectional view similar to FIG. 9, showing a deformed state at the time of a vehicle collision.

First, in FIGS. 1 and 2 showing the first embodiment, a vehicle body F of an automobile V has a monocoque structure formed by welding and assembling steel plate panels.
Has a pair of left and right side frames S integrally extending in the front-rear direction on both right and left sides thereof. The left and right side frames S are each formed in a closed sectional structure to form a skeleton of a front vehicle body, and a rectangular sub-frame (not shown) supporting the engine is provided between the two side frames S. Are connected and supported at a plurality of locations.

A dashboard D which forms a part of the vehicle body F and forms a front end wall of the vehicle compartment C is disposed substantially vertically so as to partition the vehicle compartment C from the engine room. The lower end of the dashboard D is inclined rearward and downward to form a toe board portion Dt corresponding to the feet of the front passenger, and the lower edge thereof is integrated with the front end of the floor panel Fp of the vehicle body F. Is joined to. On the front surface near the lower end of the dashboard D, the rear ends of the left and right side frames S straddle the substantially vertical portion Dv of the board D and the inclined lower end (toe board portion Dt). In addition, they are integrally connected at intervals. The above is the conventional body structure.

On the rear side of the dashboard D on the passenger's seat side, a foot supporting plate 1 formed separately from the board D is provided.
Are arranged adjacent to each other. The support plate 1 is configured such that the deformation amount of the plate 1 at the time of a vehicle collision is smaller than the deformation amount of the dashboard D, as will be described later. A vertical plate portion 2 in contact with the rear surface of the vertical portion Dv, an inclined plate portion 3 connected to the lower end of the vertical plate portion 2 and inclined backward and downward, The rear surface of the inclined plate portion 3 is a toe board surface f that directly faces the sole of the occupant,
The upper surface of the horizontal plate portion 4 is a heel mounting surface on which the heel portion 6 of the occupant is mounted.

The vertical plate 2 is provided with a dashboard D
Are fixed to the rear surface of the vertical portion Dv with appropriate fixing means (a plurality of bolts 5 in the illustrated example).
The horizontal plate portion 4 is placed in a non-coupled state with the vehicle body F, that is, the dashboard D and the floor panel Fp.

Next, the operation of the above embodiment will be described. In a normal use state of the automobile V, the support plate 1 has a vertical plate portion 2, an inclined plate portion 3, and a horizontal plate portion 4 each of which has a vertical portion Dv of the dashboard D, an inclined lower end portion (toe board portion Dt), and a floor panel Fp. , And the cabin C
Since it is hardly protruded to the side, the foot space of the occupant is widely ensured despite the special provision of the support plate 1.

At the time of collision of the vehicle V, the vertical portion Dv of the dashboard D or the lower end portion of the slope (toe board portion Dt)
As described above, due to the deformation of the side frame S, the backward displacement, or the like, there is a case where the portion corresponding to the forefoot protrudes rearward as shown in FIG. 3 in some cases. In such a case, in accordance with the deformation of the dashboard D, the inclined plate 3 and the horizontal plate 4 of the support plate 1 which are not connected to the vehicle body F translate rearward (in this case, the horizontal plate 4 The lower surface of the support plate 1 slides on the floor panel Fp) so that the heel portion 6 of the occupant can be pushed rearward, and the deformation of the support plate 1 itself is suppressed to be smaller than the deformation of the dashboard D. As a result, the reduction of the ankle angle θ of the occupant due to the above-described deformation of the dashboard D can be suppressed without specially using a thick pad material or a reinforcing material, and the bending load applied to the ankle can be effectively reduced. Is done.

FIGS. 4 to 6 show a second embodiment of the present invention. In this embodiment, the support plate 1 is composed of an inclined plate portion 13 and a horizontal plate portion 14, and the upper end portion of the inclined plate portion 13 is fixed to the dashboard D by a suitable fixing means (a plurality of bolts 5 in the illustrated example). Bonded and fixed. Further, between the horizontal plate portion 14 and the vehicle body F, there is provided a guide means Gi for guiding the rearward slide of the horizontal plate portion 14 and suppressing the floating thereof, and the guide means Gi is provided on both the left and right sides of the support plate 1. A guided body 11 made of synthetic resin held by a bracket 10 protruding from the vehicle body, and a side sill Si and a floor of the vehicle body for slidably contacting the upper surface of the guided body 11 and the left and right sides of the support plate 1 respectively. It comprises a guide body 12 fixed to the tunnel portion t of the panel Fp. Further, on the upper surface of the floor panel Fp, a plurality of guide pipes 17 that are in contact with the lower surface of the horizontal plate portion 14 and smoothly guide the front and rear sliding of the plate portion 14 are fixed, and these pipes 17 extend in the vehicle front-rear direction and are mutually connected. Arranged in parallel.

According to the second embodiment, the inclined plate portion 13 of the support plate 1 is pushed backward in conjunction with the deformation of the dashboard at the time of a vehicle collision, whereby the support plate 1 is pushed.
As shown in FIG. 7, the heel portion 6 of the occupant can be pushed backward by sliding backward without significant deformation as shown in FIG.
Is further suppressed, and the bending load applied to the ankle is effectively reduced. Further, even when a rotational moment acts on the support plate 1 due to the deformation of the dashboard D, the guide means Gi can smoothly slide the plate 1 rearward without being lifted. The part 6 can always be accurately pushed backward.

In the second embodiment, the rear surface of the inclined plate portion 13 of the support plate 1 is brought into close contact with the inclined lower end portion (toe board portion Dt) of the dashboard D. However, in the present invention, FIG. As shown in FIG. 8, at least a part of the inclined plate portion 13 may be separated from the lower end of the inclined portion of the dashboard D (toeboard portion Dt). in this case,
The retreat amount of the support plate 1 according to the deformation of the dashboard D is
Since it depends on the height H of the contact point between the inclined plate portion 13 of the plate 1 and the dashboard D, the height of the inclined lower end portion (toeboard portion Dt) of the dashboard D allows the inclined plate portion 13 if the height and space allow. As shown in FIG. 8, a reinforcing member 15 is integrally provided on the back surface of the support plate 1 and the height H of the contact point is changed, so that the amount of retreat of the support plate 1, that is, the amount of intrusion into the vehicle compartment C can be appropriately set. It becomes possible.

9 and 10 show a third embodiment of the present invention. In this embodiment, a flat support plate 1 corresponding to an inclined lower end portion (toe board portion Dt) of a dashboard D is provided on a support pipe 16 bridged between the left and right front pillars Pf of the vehicle body F and rotatably supported. The support plate 1 is fixed to the vehicle body F through the pipe 16.
(The front pillar Pf) so as to be rotatably suspended and supported. An intermediate portion of the support pipe 16 is a floor tunnel t.
The support plate 1 on the passenger seat side and the driver's seat side are disposed on both left and right sides of the curved portion so as to bypass the driver's seat. In particular, the support plate 1 on the driver's seat side supports the passenger seat side. Board 1
And a step portion for a footrest is formed at the left end.

The fulcrum of the support pipe 16 on the vehicle body side (therefore, the center of rotation of each support plate 1) is set above the support plate 1, so that the amount of rearward deformation of the front pillar Pf at the time of a vehicle collision is reduced by the dashboard. Since each of the support plates 1 is smaller than that of D, each support plate 1 rotates so that the lower end thereof is displaced rearward in conjunction with the deformation of the dashboard D.

In the third embodiment, the lower end is displaced rearward as shown in FIG. 11 while the support plate 1 retains its shape in conjunction with the deformation of the dashboard at the time of a vehicle collision. , The heel portion 6 of the occupant can be pushed backward by the rotation, and the decrease in the ankle angle θ of the occupant due to the deformation of the dashboard is suppressed, and the bending load applied to the ankle is effectively reduced. It is reduced.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various embodiments are possible within the scope of the present invention. For example, in the first and second embodiments, the support plate 1 is provided on the passenger side, but in the present invention, the support plate 1 may be provided on the driver side. Further, in the third embodiment, a pipe 16 supporting the support plate 1 is bridged between the left and right front pillars Pf so that the support plates 1 on the driver's seat side and the passenger's seat side are integrally supported. However, in the present invention, the pipe 16 (therefore, the support plate 1) may be of a left-right independent type, for example, by supporting one end of the pipe 16 at the upper right or left center of the dashboard D or the like.

Further, in the first and second embodiments, the support plate 1 slidable back and forth on the floor panel Fp is constituted by a single steel plate. However, in the present invention, an energy absorber is integrally formed on the support plate 1. The energy absorber may be provided, for example, as a honeycomb structure made of synthetic resin, paper, or aluminum, a molded body made of hard urethane, a foamed body made of polypropylene, and a punch metal (porous metal plate) on the upper surface. A double panel structure or the like can be selected.

[0027]

As described above, according to the present invention, when a portion of a dashboard hitting a foot portion is deformed so as to protrude backward due to a collision of an automobile or the like, the dashboard is closer to the occupant than the dashboard. Therefore, the amount of deformation of the support plate having the toeboard surface is made smaller than the deformation of the dashboard, so that the decrease in the ankle angle of the occupant due to the deformation of the dashboard can be suppressed as much as possible, and the bending applied to the ankle The load can be reduced. Moreover, since it is not necessary to use a thick pad material or reinforcing material to suppress the decrease in the ankle angle, the weight and cost of the vehicle body can be reduced, and a sufficient foot space can be secured.

According to the second aspect of the present invention, the inclined plate portion and the horizontal plate portion of the support plate, which are not connected to the vehicle body, are translated rearward in response to the deformation of the dashboard.
Since the heel portion of the occupant can be pushed rearward, the decrease in the ankle angle of the occupant due to the deformation of the dashboard is further suppressed, and the bending load applied to the ankle is effectively reduced.

According to the third aspect of the present invention, the support plate can slide rearward and push the heel portion of the occupant rearward in response to the deformation of the dashboard. The decrease in the ankle angle of the occupant is further suppressed, and the bending load applied to the ankle is effectively reduced.

According to the fourth aspect of the present invention, the support plate can be smoothly slid rearward without being lifted in accordance with the deformation of the dashboard. Therefore, the decrease in the ankle angle of the occupant due to the above-described deformation of the dashboard is further suppressed, and the bending load applied to the ankle is effectively reduced.

According to the fifth aspect of the present invention, the heel portion of the occupant can be pushed rearward by rotating the support plate in accordance with the deformation of the dashboard. The decrease in the ankle angle is further suppressed, and the bending load applied to the ankle is effectively reduced.
In addition, since the supporting plate can reduce the moving resistance as much as possible by rotating the supporting plate, it is possible to quickly respond to the deformation of the dashboard.

[Brief description of the drawings]

FIG. 1 is a perspective view of a foot on a passenger side of a passenger compartment showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG. 1;

FIG. 3 is a sectional view similar to FIG. 2, showing a deformed state at the time of a vehicle collision;

FIG. 4 is a perspective view of a passenger side on a passenger seat side showing a second embodiment of the present invention.

FIG. 5 is an enlarged perspective view of 5 parts of FIG. 4;

FIG. 6 is a sectional view taken along line 6-6 of FIG. 4;

FIG. 7 is a sectional view similar to FIG. 6, showing a deformed state at the time of a vehicle collision;

FIG. 8 is a sectional view similar to FIG. 6, showing a modification of the second embodiment.

FIG. 9 is a perspective view of the feet of a driver's seat and a passenger's seat showing a third embodiment of the present invention.

10 is a sectional view taken along line 10-10 of FIG. 9;

FIG. 11 is a sectional view similar to FIG. 10, showing a deformed state at the time of a vehicle collision;

FIG. 12 is a longitudinal sectional view of a dashboard showing a conventional example and its periphery.

[Explanation of symbols]

 C ・ ・ ・ Car room D ・ ・ ・ Dashboard F ・ ・ ・ Car body Fp ・ ・ Floor panel f ・ ・ ・ Toe board surface Gi ・ ・ ・ Guiding means S ・ ・ ・ Side frame 1 ・ ・ ・ Support plate 2 ・ ・ ・ Vertical Plate part 3 ・ ・ ・ Slope plate part 4 ・ ・ ・ Horizontal plate part

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuji Kikuchi 1-4-1, Chuo, Wako-shi, Saitama Prefecture Inside Honda R & D Co., Ltd. (72) Inventor Ken Kayama 1-4-1, Chuo, Wako-shi, Saitama Inside Honda R & D Co., Ltd. (72) Inventor Yoshinobu Kanazawa 1-4-1 Chuo, Wako-shi, Saitama Pref.

Claims (5)

[Claims] An automobile body structure in which a rear end portion of a side frame (S) of a vehicle body (F) on a front side of a vehicle compartment (C) is connected to a front surface of a dashboard (D), wherein a toe board for facing a sole of an occupant is provided. A support plate (1) having a surface (f) and formed separately from the dashboard (D) is provided behind the dashboard (D), and a collision load acts on the side frame (S) from the front. The deformation amount of the support plate (1) at the time is smaller than the deformation amount of the dashboard (D). 2. The support plate (1) has a vertical plate portion (2) connected to a dashboard (D), and a rear surface connected to a lower end of the vertical plate portion (2), and a rear surface formed with the toeboard surface (f). And a horizontal plate portion (4) connected to the lower end of the tilt plate portion (3). The horizontal plate portion (4) and the tilt plate portion (3) are connected to the vehicle body (F). 2. The vehicle body structure according to claim 1, wherein the vehicle body structure is placed in an uncoupled state from the vehicle body. 3. The support plate (1) slides rearward in conjunction with deformation of the dashboard (D) when a collision load is applied to the side frame (S) from the front. Item 3. An automobile body structure according to item 1 or 2. 4. A guide means (Gi) for guiding the sliding of the support plate (1) when the support plate (1) slides backward and for suppressing the lifting of the support plate (1) is provided between the support plate (1) and the vehicle body (F). The vehicle body structure according to claim 3, wherein the vehicle body structure is provided between the vehicle body and the vehicle body. 5. The support plate (1) rotates such that the lower end is displaced rearward in conjunction with the deformation of the dashboard (D) when a collision load is applied to the side frame (S) from the front. The vehicle body structure of an automobile according to claim 1, wherein: