JP2015113010A - Floor front part structure of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor front part structure of an automobile capable of suppressing degradation of a lower leg disorder value caused by jumping of a toe part at the time of vehicle collision, without causing a problem such as degradation in energy absorption function, sound shielding, sound absorbing function, layout property, and increase in cost and weight.SOLUTION: A floor front part structure of an automobile includes a tibia plate 18 which is arranged on an upper surface of a floor front part 13b where a foot of a passenger in an assistant driver seat is positioned. The tibia plate 18 has at least a longitudinal length from a toe portion of a passenger to an ankle portion. A recess 18j extending in longitudinal direction of a vehicle is formed at the tibia plate 18, and an on-vehicle tool 28 is housed in the recess 18j.

Description

  The present invention relates to an automobile floor front structure in which a tibia plate that absorbs a load transmitted to a passenger's foot at the time of a vehicle collision is disposed on a floor front portion on which a passenger's foot seated on a seat is located.

  As this type of floor front structure, for example, in Patent Document 1, a tibia plate that absorbs an impact load transmitted to the occupant's buttocks at the time of a vehicle collision is disposed in the front portion of the floor panel, and further, A structure in which sound insulation and sound absorption effects for absorbing vibration and sound during normal running are obtained by a tibia plate is disclosed.

JP 2005-81958 A

  By the way, the conventional structure employs a structure in which the tibia plate is extended rearward and raised, and the raised portion is used for footrest, sound insulation, and sound absorption of the occupant. However, the tibia plate sometimes folds and deforms upward in the event of a vehicle collision. When this fold deformation occurs, the toe side portion of the occupant's foot is flipped up by the fold deformation, and the limb damage value of the occupant deteriorates. There is concern.

In particular, when a notch is formed on the bottom surface of the tibia plate in order to avoid interference with a wire harness or a duct for a rear seat arranged on the floor panel, the notch becomes a trigger. As a result, the tibia plate is likely to be bent into a square shape. If the entire foot is lifted upward along with this bending deformation, it will not be a problem, but if only the toe side portion in front of the ankle is flipped up, there is a possibility that the joint portion may be damaged.

Therefore, it is conceivable to increase the strength and hardness of the tibia plate to prevent bending deformation. However, if this is done, the energy absorption function, the sound insulation function, and the sound absorption function may be deteriorated. Moreover, if the said notch is abolished, layout properties, such as a wire harness, will deteriorate. Furthermore, when a reinforcing member for preventing bending deformation is newly added to the tibia plate, there arises a problem that the cost and weight are increased and the productivity is deteriorated.

  The present invention has been made in view of the above-described conventional situation, and does not cause various problems such as an energy absorption function, a sound insulation function, a sound absorption function, a layout deterioration of a wire harness, a cost, an increase in weight, and the like. An object of the present invention is to provide an automobile floor front structure that can suppress deterioration of the lower limb damage value due to the jumping of the toe side portion at the time.

The present invention includes a floor front portion on which an occupant's foot seated on a seat is located, and a tibia plate that is disposed on the upper surface of the floor front portion and absorbs a load transmitted to the occupant's foot in the event of a vehicle collision. In the automobile front floor structure with
The tibia plate has a longitudinal length extending from at least the toe portion to the heel portion of the occupant, and the tibia plate is formed with a recess extending in the vehicle longitudinal direction, and the vehicle-mounted tool is accommodated in the recess. It is characterized by being.

  According to the floor front structure according to the present invention, the recessed portion extending in the vehicle front-rear direction is formed in the tibia plate, and the in-vehicle tool is accommodated in the recessed portion. When the in-vehicle tool housed in the recess is stretched back and forth, it is transmitted to the rear of the vehicle, thereby preventing or suppressing upward bending deformation of the tibia plate. As a result, it is possible to prevent or suppress the toe side portion of the occupant from jumping up and suppress deterioration of the lower limb disorder value.

In this way, since the collision load can be transmitted to the rear of the vehicle by the in-vehicle tool, a notch for avoiding interference with, for example, a wire harness or the like on the bottom surface of the tibia plate while preventing the tibia plate from bending upward is provided. Can be formed.

  In addition, since the entire tibia plate moves backward without bending when the vehicle collides, the entire leg portion moves backward together with the backward movement of the tibia plate, and the joint of the heel portion is damaged. From this point, deterioration of the lower limb disorder value can be suppressed.

  In the present invention, since an existing in-vehicle tool that has been conventionally mounted on a vehicle is used, it is possible to prevent bending deformation of the tibia plate at a low cost. As a result, the energy absorption function and sound insulation and sound absorption function of the above-mentioned tibia plate are deteriorated, the layout of the wire harness and the like is deteriorated, and the cost, weight, and productivity are reduced when a new reinforcing member is added. The problem can be solved.

  Furthermore, since the in-vehicle tool normally mounted in the cargo compartment at the rear of the vehicle is accommodated in the front of the floor, the cargo compartment can be used widely, and the convenience and accommodation capacity of the cargo compartment can be improved accordingly.

It is a perspective view of the compartment where the seat of the car by Example 1 of the present invention was arranged. It is a disassembled perspective view of the floor front part of the said compartment. FIG. 6 is a cross-sectional side view (cross-sectional view taken along the line III-III in FIG. 5) of the passenger seat tibia plate disposed in the front portion of the floor. FIG. 6 is a sectional rear view of the passenger seat tibia plate (sectional view taken along line IV-IV in FIG. 5). FIG. 3 is a plan view of the passenger seat tibia plate.

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

  1 to 5 are views for explaining a front floor structure of an automobile according to a first embodiment of the present invention. In this embodiment, front and rear and left and right mean front and rear and left and right as viewed in the forward direction of the vehicle.

  In the figure, reference numeral 1 denotes a vehicle compartment. A passenger seat front seat 3, a driver seat 4 and left and right rear seats 5 and 6 are mounted on the floor 2 of the passenger compartment 1, and an instrument panel 7 is arranged in front of the front seats 3 and 4. It is installed. A steering wheel 8 is disposed in front of the driver seat 4. Reference numerals 9 and 10 denote a front door and a rear door, respectively.

  The floor portion 2 has a structure in which a floor carpet 14 is laid on the upper surface of a floor panel 13. An inclined portion 13a that bends and extends obliquely forward and upward is formed at the front end portion of the floor front portion 13b of the floor panel 13. The inclined portion 13a defines the vehicle compartment 1 and the engine compartment E. The dash panel 15 is joined to an inclined portion 15a that bends and extends downward and obliquely downward (see FIG. 3).

  A floor cross member 16 having a hat-shaped cross section extending in the vehicle width direction is coupled to the upper surface of the floor panel 13, and the front portions of the left and right front seats 3, 4 are connected to the floor cross member 16. It is attached.

  The portion of the upper surface of the floor front portion 13b where the feet of the passenger seat and the driver seated on the passenger seat 3 and the driver seat 4 are located absorbs an impact load transmitted to the feet of the passenger at the time of a vehicle collision. Left and right tibia plates 18 and 17 are disposed.

The left and right tibia plates 18 and 17 are formed by foaming a resin foam material so as to have substantially the same size and shape and a predetermined thickness. The left and right tibia plates 18, 17 are shock absorbing portions 18 b, 17 b extending upward along the inclined portion 15 a of the dash panel 15, and the floor cross member 16 is rearward from the shock absorbing portions 18 b, 17 b. And raised portions 18a and 17a extending so as to be close to each other. The raised portions 18a and 17a have such a size that both feet of an occupant seated on the front seats 3 and 4 can be placed thereon, specifically, a longitudinal length extending from the toe portion to the heel portion.

As described above, the tibia plates 18 and 17 have the impact absorbing portions 18b and 17b formed by foaming the foam material, and the subsequent raised portions 18a and 17a, so that they are transmitted to the occupant's feet when the vehicle collides. In addition to the function of absorbing the collision energy, it provides a sound insulation and sound absorption function for absorbing vibration and noise during traveling.

  On the bottom surface of the raised portion 18a of the tibia plate 18 of the passenger seat 3, a notch portion 18d for avoiding interference with the wire harness 20 routed on the floor panel 13 is formed so as to extend in the vehicle width direction. Has been.

  An opening 14a is formed in a portion of the floor carpet 14 covering the raised portion 18a, and a board carpet 21 is detachably disposed in the opening 14a.

  The tibia plate 18 is formed with receiving recesses 18e to 18j for detachably receiving the in-vehicle tools 23 to 28. Specifically, as shown in FIG. 5, a cylinder accommodating recess 18e for accommodating the puncture repair cylinder 23 is formed on the right side of the front portion of the raised portion 18a, and a traction hook is disposed on the rear side of the accommodating recess 18e. A hook housing recess 18 f for housing 24 is formed. A wrench storage recess 18g for storing the wheel nut wrench 25 is formed on the vehicle exterior side of the hook storage recess 18f so as to extend in the front-rear direction, and a handle storage recess 18h for storing the jack handle 26 is formed in the wrench storage recess 8g. A compressor housing recess 18 i for housing the puncture repair compressor 27 is formed on the rear side of the crossing. Furthermore, a jack storage recess 18j for storing the jack stand 28 is formed on the outside of the wrench storage recess 18g so as to extend in the vehicle front-rear direction.

  The jack stand 28 is disposed so as to straddle the notch 18d in the front-rear direction, and is longer than the front-rear length of the passenger's foot.

  A fixing projection 18k and a fixing recess 18m for positioning and fixing the jack stand 28 are formed in the jack storage recess 18j (see FIGS. 3 and 4). The jack stand 8 is fixedly disposed so as to be immovable in the vehicle front-rear direction and the vehicle width direction by press-fitting corresponding portions of the jack stand 28 into the fixed protrusion 18k and the fixed recess 10m. In the remaining storage recesses 18e to 18i, a fixing protrusion and a fixing recess (not shown) for positioning and fixing the in-vehicle tools 23 to 27 are formed.

  When an impact load F is applied due to a frontal collision of the vehicle, the impact absorbing portion 18b of the tibia plate 18 moves rearward while compressively deforming, and the rear end portion 18c is mainly stretched back and forth so that the rear end portion 18c extends to the floor cross member 16. The entire tibia plate 18 moves backward until it comes into contact. As a result, the entire lower limb of the occupant moves backward together with the tibia plate 18 (see FIG. 3). It is to be noted that not only the jack stand 28 but also the wheel nut wrench 25 and the jack handle 26 arranged in the front-rear direction generate the tensile force due to the impact load F, and substantially the same tensile force is exhibited.

  As described above, according to the present embodiment, the raised portion 18a of the tibia plate 18 has a longitudinal length extending from the toe portion of the occupant to the heel portion, and the storage recessed portion 18j extending in the vehicle longitudinal direction is formed in the raised portion 18a. Since the jack stand 28 is housed in the housing recess 18j so as to be immovable in the vehicle front-rear direction and the vehicle width direction, the jack load 28, which is a rigid body, stretches back and forth as described above. As a result, it is transmitted to the rear of the vehicle, and the raised portion 18a can be prevented from being bent upward and deformed by the notch 18d as a trigger. Thereby, it can prevent that a passenger | crew's toe side part jumps up, and can suppress the deterioration of a leg leg disorder value.

  Further, since the entire raised portion 18a moves rearward without being deformed at the time of a vehicle collision, the entire leg portion moves together with the rearward movement of the raised portion 18a. It is possible to prevent the joint portion from being damaged by the flipping up, and to further suppress the deterioration of the lower limb injury value.

  In the present embodiment, the existing jack stand 28 mounted on the automobile is effectively used to prevent the tibia plate 18 from being bent and deformed, so that the prevention of the flip-up can be realized at low cost. As a result, the energy absorption function and sound insulation and sound absorption function of the above-mentioned tibia plate are deteriorated, the layout of the wire harness and the like are deteriorated, and the cost, weight, and productivity of new reinforcing members are increased. The problem can be avoided.

  Furthermore, in this embodiment, since each vehicle-mounted tool generally mounted in the cargo compartment at the rear of the vehicle is accommodated in the floor front portion 13b, the rear cargo compartment can be used widely, and the convenience and storage capacity of the cargo compartment can be increased accordingly. This is particularly beneficial when used in a welfare vehicle equipped with a sloper.

  In the above-described embodiment, the tension force is applied mainly by arranging the jack stand 28 in the front-rear direction. However, the in-vehicle tool according to the present invention substantially fills the storage recess of the tibia plate in the vehicle front-rear direction. The wheel nut wrench 25, the jack handle 26, or the tow hook 24 may be used.

  In the above embodiment, the in-vehicle tools 23 to 28 are accommodated in the tibia plate 18 disposed on the passenger seat side. However, in the present invention, the in-vehicle tools may be accommodated in the tibia plate 17 on the driver seat side. Further, each on-vehicle tool may be distributed and accommodated on the left and right tibia plates 17 and 18. Furthermore, the number of on-vehicle tools may be one or more, and in this case, the same effect as that of the above embodiment can be obtained.

3,4 Front seat 13b Floor front 18 Tibia plate 18j Storage recess 28 Jack stand (on-vehicle tool)

Claims (1)

An automobile comprising: a front floor portion on which an occupant's foot seated on a seat is located; and a tibia plate disposed on an upper surface of the front floor portion for absorbing a load transmitted to the occupant's foot in the event of a vehicle collision. In the front floor structure,
The tibia plate has a longitudinal length extending from at least the toe portion to the heel portion of the occupant, and the tibia plate is formed with a recess extending in the vehicle longitudinal direction, and the vehicle-mounted tool is accommodated in the recess. An automobile floor front structure characterized in that

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