JP5692285B2 - Vehicle floor structure - Google Patents

Description

  The present invention relates to a vehicle floor structure including a floor pad.

  Conventionally, in an automobile, a floor pad is used in order to absorb an impact input to the occupant on a foot at the time of a collision. The floor pad is placed on the floor panel and has a restricting portion that accommodates a passenger's foot. The restricting portion has a slipper shape. When the occupant's feet are accommodated in the restricting portion, for example, even if the occupant moves in the lateral direction at the time of a collision, the floor pad also moves with this movement (see, for example, Patent Document 1).

JP 2010-132172 A

  On the other hand, when a rearward impact is input, for example, when the automobile collides from the front, the floor pad comes into contact with the passenger's foot, and the impact is input to the passenger's foot through the floor pad. Although the impact is absorbed by the floor pad, the floor structure of the vehicle is required to effectively absorb the impact.

  An object of the present invention is to provide a vehicle floor structure that effectively absorbs an impact.

A vehicle floor structure according to an embodiment of the present invention includes a vehicle floor wall portion, a floor pad provided on the floor wall portion, and a floor vertical wall that rises upward from the front of the floor pad in the floor wall portion. A part. The floor pad includes a base and an impact absorbing portion provided at a front end portion of the base . The shock absorbing portion, said vertical wall portion you face the occupant's legs when seated to Ri rising from the base and upper wall portion provided on an upper end portion extending in the floor vertical wall portion of the vertical wall portion And the vertical wall portion is deformed by contact with the toe of the occupant accompanying the rearward movement of the floor pad or the forward movement of the occupant. A deformation-permitting portion that allows

  According to the present invention, an impact can be effectively absorbed.

The perspective view which shows the floor structure of the vehicle which concerns on one Embodiment of this invention. Sectional drawing of the floor structure of the vehicle shown along F2-F2 line shown in FIG. The perspective view which shows the floor pad of the floor structure of the vehicle. The top view which shows the floor pad. The bottom view which shows the floor pad. Sectional drawing which shows a mode that the vertical wall part of the floor pad is absorbing the impact. The perspective view which shows the same floor pad after a deformation | transformation. The perspective view which looked at the same floor pad after a deformation | transformation from the angle different from FIG.

  A vehicle floor structure according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a floor structure 10 of a vehicle. As an example, the floor structure of the present invention is used in a passenger seat of a vehicle. As an example, the vehicle is an automobile in which a driver seat and a passenger seat are provided at the front of the vehicle body. The passenger seat and the driver seat are aligned in the vehicle width direction. 2 is a cross-sectional view of the floor structure 10 shown along line F2-F2 shown in FIG. FIG. 2 shows the vicinity of the passenger seat cut along the vehicle front-rear direction.

  As shown in FIGS. 1 and 2, the floor structure 10 includes a floor panel 20, a dash panel 30, a floor pad 40, and a floor carpet 50. The floor panel 20 is a bottom wall portion of the vehicle body. The dash panel 30 is provided at the front end of the floor panel 20 and extends upward. The lower end 31 of the dash panel 30 rises gently with respect to the floor panel 20.

  FIG. 7 is a perspective view showing the vicinity of the passenger seat in a state where a floor carpet 50 described later is removed. In FIG. 7, the floor pad 40 is shown in a destroyed state. The destruction of the floor pad 40 will be described later. As shown in FIG. 7, the floor pad 40 is provided on the floor of the vehicle body in a range in which feet of passengers seated in the passenger seat are arranged.

  As shown in FIG. 2, the floor pad 40 is placed on the range from the front end 21 of the floor panel 20 to the lower end 31 of the dash panel 30. FIG. 3 is a perspective view showing the floor pad 40. FIG. 4 is a plan view showing the floor pad 40. As an example, the floor pad 40 is formed of foamed polypropylene.

  As shown in FIGS. 2 to 4, the floor pad 40 includes a base 41 and an impact absorbing portion 42. The base 41 is provided across the front end portion 21 of the floor panel 20 and the lower end portion of the dash panel 30 along the longitudinal direction of the vehicle body.

  FIG. 5 is a bottom view showing the floor pad 40. As shown in FIG. 5, a groove 44 extending in the front-rear direction of the vehicle body is formed substantially at the center along the vehicle width direction of the lower surface portion 43 of the base 41. The groove 44 opens to the lower surface and is recessed upward.

  7 and 8 show a state where the floor pad 40 is attached to the vehicle body. As shown in FIGS. 6 and 7, the floor panel 20 is provided with a mounting portion 22 to which a rail of an adjusting device that adjusts the front-rear position of the passenger seat relative to the floor panel 20 is attached. The attachment portion 22 extends in the front-rear direction. The attachment portion 22 fits into the groove 44.

  As shown in FIG. 1, the impact absorbing portion 42 is provided at the front end portion of the base 41. The shock absorber 42 is located in front of the passenger seated in the passenger seat. As shown in FIG. 2, the impact absorbing portion 42 includes a vertical wall portion 45, an upper wall portion 46, and a reinforcing wall portion 47.

  The vertical wall portion 45 is provided at the front end of the base 41 and rises upward with respect to the base 41. The vertical wall portion 45 is substantially perpendicular to the front-rear direction. The degree of rising of the vertical wall portion 45 is set such that a gap is formed between the vertical wall portion 45 and the lower end portion 31 of the dash panel 30.

  In the present embodiment, the vertical wall portion 45 extends substantially parallel to the vertical direction. The lower end 31 of the dash panel 30 is inclined with respect to the vertical direction. For this reason, a gap is formed between the vertical wall portion 45 and the dash panel 30. The upper wall portion 46 extends forward from the upper end of the vertical wall portion 45. The front end of the upper wall portion 46 contacts the dash panel 30.

  Here, the length of the vertical wall portion 45 in the vertical direction will be specifically described. As shown in FIG. 2, when an occupant sits on the passenger seat, the toes 5 of the occupant's feet 4 face the vertical wall 45. The length in the vertical direction is set so that the position where the upper wall portion 46 is provided in the vertical wall portion 45 is substantially the same as the upper 6 of the foot 4 in a state where the foot 4 is placed on the floor pad 40. ing. In the present embodiment, the upper wall portion 46 is provided at the upper end portion of the vertical wall portion 45. For this reason, the upper end of the vertical wall portion 45 has a length that is substantially the same position as the upper 6 of the foot 4.

  In addition, the passenger | crew said here is a general adult of the country where this vehicle is used. For example, when this vehicle is used in Japan, it is an adult in Japan.

  The reinforcing wall portion 47 is a vertical wall portion extending in the vertical direction, and is connected to the vertical wall portion 45 and the upper wall portion 46. The reinforcing wall portion 47 extends from the vertical wall portion 45 toward the dash panel 30. As shown in FIG. 5, a plurality of reinforcing wall portions 47 are provided and are spaced apart from each other in the vehicle width direction. In the present embodiment, as an example, four reinforcing wall portions 47 are provided. The lower end surface 47 a of each reinforcing wall portion 47 is formed along the dash panel 30, in other words, in contact with the dash panel 30. The rigidity of the shock absorbing portion 42 is improved by the reinforcing wall portion 47.

  The vertical wall portion 45, the upper wall portion 46, and the reinforcing wall portion 47 form a deformation allowing portion 48 that allows deformation of the vertical wall portion 45. The deformation | transformation permission part 48 is a part which ensures the deformation | transformation space at the time of the vertical wall part 45 deform | transforming. In this embodiment, the deformation | transformation permission part 48 is a structure provided with two or more spaces enclosed by the vertical wall part 45, the upper wall part 46, and the reinforcement wall part 47, and becomes a hollow shape. A space surrounded by the vertical wall portion 45, the upper wall portion 46, and the reinforcing wall portion 47 opens to the lower surface of the floor pad 40.

Here, the position of the floor pad 40 in the vehicle body will be specifically described. The shape of the periphery of the floor pad 40 is formed in accordance with the shape of the portion on the floor panel 20 or the dash panel 30 where the floor pad 40 is placed. As shown in FIG. 4, in the present embodiment, the vehicle width direction outer side portion component in the vehicle width direction outer side portion of the base 41 and the shock absorbing portion 42 is formed so as to escape the tire house. For this reason, the front end portion of the floor pad 40 is narrower in the vehicle width direction than the rear end portion. The groove 44 is an example of being formed in the floor pad in accordance with the surrounding shape.

  In addition, for example, a positioning projection that positions the floor pad 40 with respect to the floor panel 20 is formed on the floor panel 20. The floor pad 40 is formed with a recess into which the positioning protrusion is fitted.

  As described above, the floor pad 40 is formed in accordance with the shape of the portion on which the floor pad 40 is placed, and the floor pad 40 is connected to the floor panel 20 and the dash by using, for example, a positioning protrusion. The position is fixed with respect to the panel 30.

  The floor carpet 50 covers the entire area of the floor panel 20 and the floor pad 40.

  Next, the impact absorbing action by the floor pad 40 will be described. As shown in FIG. 2, when the occupant sits on the passenger seat, the toe 5 of the occupant's foot faces the vertical wall portion 45 of the shock absorbing portion 42 of the floor pad 40.

  In the unlikely event that a rearward impact is input to the dash panel 30 due to a frontal collision of the vehicle, the dash panel 30 moves rearward. Further, when the vehicle collides while traveling forward, the toe 5 moves forward as the occupant moves forward due to inertia. As a result, the vertical wall portion 45 and the toe 5 come relatively close to each other, and the toe 5 hits the vertical wall portion 45. When the impact is strong, the toe 5 pierces the vertical wall portion 45. At this time, the toe 5 abuts on a portion of the vertical wall portion 45 that is lower than a portion where the upper wall portion 46 is provided.

  FIG. 6 is a cross-sectional view showing a state in which the vertical wall portion 45 absorbs an impact. FIG. 6 shows a state in which the floor structure 10 is cut in the same manner as in FIG. As shown in FIG. 6, when the toe 5 hits the vertical wall portion 45, the vertical wall portion 45 is destroyed. When the deformation | transformation permission part 48 is formed in hollow shape, the vertical wall part 45 deform | transforms smoothly. FIG. 7 is a perspective view showing the floor pad 40 after deformation. FIG. 8 is a perspective view of the deformed floor pad 40 as seen from an angle different from that in FIG.

  When the vertical wall portion 45 is deformed as shown in FIG. 6, the connecting portion 49 connected to the vertical wall portion 45 in the upper wall portion 46 is lowered downward and abuts on the upper portion of the toe 5. When the connecting portion 49 of the upper wall portion 46 is lowered, the upper wall portion 46 is inclined, and the posture of the upper wall portion 46 is determined by the action direction of the load input to the foot via the upper wall portion 46. The posture extends substantially in parallel. More specifically, the rear end, which is the connecting portion 49 of the upper wall portion 46, is lowered from the front end of the upper wall portion 46. The upper wall portion 46 absorbs an impact and has an oblique posture in which the rear end is lowered with respect to the front end, thereby suppressing the toe 5 from above and preventing the occupant's foot 4 from jumping up.

  In the floor structure 10 configured as described above, a space for deforming the vertical wall portion 45 is ensured, so that an impact input to the foot is effectively absorbed. Furthermore, since the upper wall part 46 presses the toe 5 from above, it is possible to suppress the occupant's feet from jumping up due to the impact.

  Moreover, the structure of the floor pad 40 can be simplified by making the deformation | transformation permission part 48 into a hollow shape. Furthermore, since the space defined by the vertical wall portion 45, the upper wall portion 46, and the reinforcing wall portion 47 has a shape that opens below the floor pad 40, for example, the floor pad 40. Can be formed using a pair of molds, so that the floor pad 40 can be easily formed.

  In the present embodiment, the structure in which the floor pad 40 is used for the passenger seat has been described. As another example, the floor pad 40 may be used for a driver's seat. Alternatively, the floor pad 40 may be used for the rear seat. In this case, the floor panel 20 is provided with a floor vertical wall portion, and the floor pad 40 is disposed behind the floor vertical wall portion so that the impact absorbing portion is disposed. By arranging in this manner, the upper wall portion 46 of the shock absorbing portion 42 abuts against the vertical wall portion of the floor, so that the vertical wall portion 45 does not move, and therefore the vertical wall portion 45 is efficiently deformed. Thus, the same operations and effects as in the present embodiment can be obtained.

  Moreover, in this embodiment, the deformation | transformation permission part 48 is provided with the some reinforcement wall part, in order to ensure rigidity. For example, when sufficient rigidity can be secured by the vertical wall portion 45 and the upper wall portion 46, the reinforcing wall portion 47 is unnecessary. In this case, the space surrounded by the vertical wall portion 45 and the upper wall portion 46 is a deformation allowing portion that allows deformation of the vertical wall portion 45.

  In the present embodiment, the portion where the floor pad 40 is provided in the floor panel 20 and the dash panel 30 is an example of the floor wall portion referred to in the present invention. The dash panel 30 is an example of a floor vertical wall portion referred to in the present invention.

The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete some components from all the components shown by embodiment mentioned above.
The contents described in the claims at the beginning of the filing of the present application will be appended.
1
The floor wall of the vehicle,
A floor pad provided on the floor wall;
A floor vertical wall portion that rises upward from the front of the floor pad in the floor wall portion;
The floor pad is
A base and a shock absorbing portion;
The impact absorbing portion includes a vertical wall portion rising from the base, an upper wall portion provided at an upper end portion of the vertical wall portion and extending toward the floor vertical wall portion, and the floor vertical wall sandwiching the vertical wall portion. A deformation-permitting portion that is provided on the portion side and allows deformation of the vertical wall portion.
A vehicle floor structure characterized by that.
2
The deformation allowing portion is formed in a hollow shape.
2. The vehicle floor structure according to 1, wherein

  DESCRIPTION OF SYMBOLS 10 ... Vehicle floor structure, 20 ... Floor panel (floor wall part), 30 ... Dash panel (floor wall part, floor vertical wall part), 40 ... Floor pad, 41 ... Base, 42 ... Shock absorption part, 45 ... Vertical Wall part, 46 ... upper wall part, 48 ... deformation allowable part.

Claims (2)

The floor wall of the vehicle,
Anda floor pads provided on said floor wall,
The floor wall, Ri rising upward from the front of the floor pad, comprising a floor vertical wall lower end portion is inclined with respect to the vertical direction,
The floor pad is
Base and
Anda shock absorber positioned in front of the occupant when seated provided at a front end portion of the base,
The shock absorbing part is
It was provided in front of the toes of the occupant's toes at the time of sitting , facing the toes of the toes, and was raised from the front end of the base so as to form a gap with the floor vertical wall. A vertical wall,
An upper wall portion provided at an upper end portion of the vertical wall portion and extending from the upper end portion of the vertical wall portion toward the floor vertical wall portion;
Is formed in a hollow shape by the upper wall and the vertical wall portion, by contact with the toe of the rider's foot with the movement of the forward movement or the occupant rearward of the floor pads, the vertical wall portion modified to allow Rukoto, the vehicle floor structure characterized that you anda deformable portion provided on the floor vertical wall side across the vertical wall portion. When the vertical wall portion is deformed, the rear end of the upper wall portion is lowered with respect to the front end of the upper wall portion, and the connecting portion between the upper wall portion and the vertical wall portion is The vehicle floor structure according to claim 1 , wherein the vehicle floor structure abuts on an upper portion of a toe of the occupant.

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