JP5879057B2 - Vehicle floor structure - Google Patents

Vehicle floor structure Download PDF

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JP5879057B2
JP5879057B2 JP2011146715A JP2011146715A JP5879057B2 JP 5879057 B2 JP5879057 B2 JP 5879057B2 JP 2011146715 A JP2011146715 A JP 2011146715A JP 2011146715 A JP2011146715 A JP 2011146715A JP 5879057 B2 JP5879057 B2 JP 5879057B2
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impact force
vehicle
tread
board surface
toe board
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JP2013014171A (en
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満晴 吉川
満晴 吉川
和倫 八崎
和倫 八崎
真哉 井上
真哉 井上
加藤　誠之
誠之 加藤
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Subaru Corp
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Fuji Jukogyo KK
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Description

本発明は、例えば、車両の助手席等、床面から前方に向かって斜め上方に立ち上がるトーボード面が設けられた車両のフロア構造に関するものである。   The present invention relates to a vehicle floor structure provided with a toeboard surface that rises obliquely upward from a floor surface, such as a passenger seat of a vehicle, for example.

従来、この種の車両のフロア構造としては、床面から前方に向かって斜め上方に立ち上がるように設けられ、着座した乗員の足が位置するトーボード面を有するものが知られている（例えば、特許文献１参照）。   Conventionally, a floor structure of this type of vehicle is known that has a toe board surface that is provided so as to rise obliquely upward from the floor surface toward the front and on which a seated passenger's foot is positioned (for example, a patent) Reference 1).

特開平０８−１６４７８２号公報Japanese Patent Laid-Open No. 08-164782

前記車両のフロア構造を有する車両では、車両に前方から衝撃力が加わる場合に、床面からトーボード面に亘って設けられたフットレストを前方に移動させることにより、運転者の足のつま先がすね側に曲げられることによる下肢の傷害値を低減し、車両の安全性の向上を図るようにしている。   In the vehicle having the floor structure of the vehicle, when an impact force is applied to the vehicle from the front side, the foot toe of the driver is moved to the shin side by moving the footrest provided from the floor surface to the toe board surface forward. The injury value of the lower limbs caused by being bent to a lower level is reduced, and the safety of the vehicle is improved.

しかし、前記車両においては、フットレストが助手席に設けられていないため、助手席の乗員の下肢の傷害値の低減を図ることができない。また、前記フットレストを運転席および助手席に適用したとしても、前記フットレストは衝撃力が作用した直後に最大限まで移動し、その後は衝撃力が乗員の足のつま先をすね側に曲げる力として作用するため、下肢の傷害値を低減することは困難である。   However, in the vehicle, since the footrest is not provided in the passenger seat, the injury value of the lower limb of the passenger in the passenger seat cannot be reduced. In addition, even if the footrest is applied to the driver's seat and the passenger seat, the footrest moves to the maximum immediately after the impact force is applied, and then the impact force acts as a force to bend the toes of the occupant's feet to the shin side. Therefore, it is difficult to reduce the injury value of the lower limbs.

本発明の目的とするところは、車両に前方から衝撃力が加わる場合において、運転者の足のつま先がすね側に曲げられる力が作用することを抑制し、下肢の傷害値を低減することのできる車両のフロア構造を提供することにある。   The object of the present invention is to suppress the action of a force that bends the toe of the driver's foot to the shin side when an impact force is applied to the vehicle from the front, and to reduce the injury value of the lower limb. An object of the present invention is to provide a vehicle floor structure that can be used.

本発明は、前記目的を達成するために、着座した乗員の足が位置し、床面から前方に向かって斜め上方に立ち上がるトーボード面を有する車両のフロア構造において、車両の前方から衝撃力が作用する場合に、乗員に伝わる衝撃力を低減する衝撃力低減機構を備え、前記衝撃力低減機構は、乗員の足で踏まれる踏板と、前記踏板の後端側を中心に前端側を下方に回転可能に前記踏板の後端側を支持する支持部材と、前記踏板の前端側と前記トーボード面との間に設けられ、変形させることで衝撃力を吸収する衝撃力吸収部材と、を有し、前記衝撃力吸収部材は、前記踏板が後端側を中心に回転する際の前記トーボード面に対して前記踏板がなす複数の角度のそれぞれにおける衝撃力の吸収量がそれぞれ設定可能であり、前記トーボード面に対して前記踏板がなすそれぞれの角度において変形することで衝撃力を吸収可能な複数の衝撃力吸収部を有し、各前記衝撃力吸収部は、前記トーボード面に対する前記踏板のなすそれぞれの角度において踏板が当接する当接部と、前記当接部の所定方向の両側からそれぞれ屈曲して前記トーボード面側に向かって延びるように形成され、衝撃力によって変形可能な一対の変形部と、を有し、少なくとも各前記当接部が車両の前後方向において互いに離間して対向配置されている。 In order to achieve the above object, the present invention provides a floor structure for a vehicle having a toe board surface on which a foot of a seated occupant is positioned and rises obliquely upward from the floor surface toward the front. when, with an impact force reduction mechanism to reduce the impact force transmitted to the occupant, the impact force reduction mechanism, rotation and tread plate can be stepped on by the rider's foot, the front end around the rear end side of the step board downward A support member that supports the rear end side of the tread plate as possible, and an impact force absorbing member that is provided between the front end side of the tread plate and the toe board surface and absorbs the impact force by being deformed, the impact force absorbing member, Ri each configurable der absorption amount of impact force at each of a plurality of angles which the tread plate with respect to the said toe board surface when the step board is rotated about the rear end, the Toe board A plurality of impact force absorbing portions that can absorb the impact force by being deformed at each angle formed by the tread, and each of the impact force absorbing portions is a tread at each angle formed by the tread with respect to the toe board surface. And a pair of deformable portions that are formed so as to bend from both sides in a predetermined direction of the contact portion and extend toward the toe board surface side, and can be deformed by an impact force. , that have at least each of said abutting portion is disposed facing away from each other in the longitudinal direction of the vehicle.

これにより、踏板が後端側を中心に回転する際のトーボード面に対して踏板がなす角度に応じた量の衝撃力が吸収されることから、車両に前方から衝撃力が作用する際における乗員の下肢の挙動が制御される。   As a result, an impact force of an amount corresponding to the angle formed by the footboard with respect to the toe board surface when the footboard rotates around the rear end side is absorbed, so that an occupant when the impact force acts on the vehicle from the front. The behavior of the lower limbs is controlled.

本発明によれば、車両に前方から衝撃力が作用する際における乗員の下肢の挙動を制御することができるので、乗員の下肢の傷害値の低減を図ることが可能となる。   According to the present invention, since the behavior of the occupant's lower limb when an impact force is applied to the vehicle from the front can be controlled, it is possible to reduce the injury value of the occupant's lower limb.

本発明の第１実施形態を示す車両の助手席の下部前方を示す斜視図である。It is a perspective view showing the lower part front of the passenger seat of vehicles showing a 1st embodiment of the present invention. 助手席の下部前方を前方から見た斜視図である。It is the perspective view which looked at the lower part front of a passenger seat from the front. 車両の前方から衝撃力が加わる場合の乗員の足の変位と足に作用する荷重の関係を示す図である。It is a figure which shows the relationship between the displacement of a passenger | crew's leg when the impact force is applied from the front of a vehicle, and the load which acts on a leg | foot. 車両の前方から衝撃力が加わる場合の挙動を示す斜視図である。It is a perspective view which shows the behavior in case an impact force is added from the front of a vehicle. 車両の前方から衝撃力が加わる場合の挙動を示す斜視図である。It is a perspective view which shows the behavior in case an impact force is added from the front of a vehicle. 車両の前方から衝撃力が加わる場合の挙動を示す斜視図である。It is a perspective view which shows the behavior in case an impact force is added from the front of a vehicle. 車両の前方から衝撃力が加わる場合の挙動を示す斜視図である。It is a perspective view which shows the behavior in case an impact force is added from the front of a vehicle. 車両の前方から衝撃力が加わる場合の挙動を示す斜視図である。It is a perspective view which shows the behavior in case an impact force is added from the front of a vehicle. （ａ）本発明の第２実施形態を示す車両の助手席の下部前方を示す斜視図である。（ｂ）衝撃力吸収部材を前方から見た図である。(A) It is a perspective view which shows the lower part front of the passenger seat of the vehicle which shows 2nd Embodiment of this invention. (B) It is the figure which looked at the impact-force absorption member from the front. （ａ）本発明の第３実施形態を示す車両の助手席の下部前方を示す斜視図である。（ｂ）衝撃力吸収部材を側方から見た図である。(A) It is a perspective view which shows the lower part front of the passenger seat of the vehicle which shows 3rd Embodiment of this invention. (B) It is the figure which looked at the impact-force absorption member from the side.

図１乃至図８は、本発明の第１実施形態を示すものである。   1 to 8 show a first embodiment of the present invention.

本発明のフロア構造を備えた車両は、車室内の左側に助手席１が設けられている。助手席１には、図１に示すように、床面２と、床面２の前端から前方に向かって斜め上方に延びるトーボード面３と、が設けられている。助手席１の床面２およびトーボード面３は、全面に亘ってカーペット（図示せず）で覆われている。   A vehicle having the floor structure of the present invention is provided with a passenger seat 1 on the left side of the passenger compartment. As shown in FIG. 1, the passenger seat 1 is provided with a floor surface 2 and a toe board surface 3 extending obliquely upward from the front end of the floor surface 2 toward the front. The floor surface 2 and the toe board surface 3 of the passenger seat 1 are covered with a carpet (not shown) over the entire surface.

助手席１の床面２およびトーボード３面には、車両に前方から衝撃力が作用する場合に、着座した乗員の下肢に作用する衝撃力を低減するための衝撃力低減機構１０が設けられている。衝撃力低減機構１０は、通常の使用状態において、床面２およびトーボード面３と共に、カーペットによって覆われている。   The floor surface 2 and the toe board 3 surface of the passenger seat 1 are provided with an impact force reduction mechanism 10 for reducing the impact force acting on the lower limb of the seated occupant when the impact force acts on the vehicle from the front. Yes. The impact force reduction mechanism 10 is covered with a carpet together with the floor surface 2 and the toe board surface 3 in a normal use state.

衝撃力低減機構１０は、乗員の足で踏まれる踏板１１と、踏板１１の後端側を床面２の前端部に支持する支持部材１２と、トーボード面３と踏板１１の前端側との間に設けられ、車両の前方から加わる衝撃力によって変形可能に設けられ、変形することで衝撃力を吸収するための衝撃力吸収部材２０と、を有している。   The impact force reduction mechanism 10 includes a tread plate 11 that can be stepped on by a passenger's foot, a support member 12 that supports the rear end side of the tread plate 11 on the front end portion of the floor surface 2, and the toe board surface 3 and the front end side of the tread plate 11. The impact force absorbing member 20 is provided so as to be deformable by an impact force applied from the front of the vehicle, and absorbs the impact force by being deformed.

踏板１１は、助手席１のトーボード面３の外周部を除く全面に亘って設けられた板状部材である。踏板１１は、車両の前方から加わる衝撃力によって変形することのない硬質の部材から形成されている。   The tread board 11 is a plate-like member provided over the entire surface excluding the outer peripheral portion of the toe board surface 3 of the passenger seat 1. The tread board 11 is formed of a hard member that is not deformed by an impact force applied from the front of the vehicle.

支持部材１２は、踏板１１の後端側と床面２の前端側とを連結する板状部材からなる。支持部材１２は、車両の前方から衝撃力が加わる場合に、破断することなく踏板１１の前方への移動を規制する。支持部材１２は、車両に前方から衝撃力が作用して乗員が踏板１１を踏み込んだ場合に、踏板１１の後端側を中心にして踏板１１を回転させる。   The support member 12 is a plate-like member that connects the rear end side of the tread plate 11 and the front end side of the floor surface 2. The support member 12 regulates the forward movement of the tread plate 11 without breaking when an impact force is applied from the front of the vehicle. The support member 12 rotates the tread plate 11 around the rear end side of the tread plate 11 when an impact force acts on the vehicle from the front and the occupant steps on the tread plate 11.

衝撃力吸収部材２０は、車両に前方から衝撃力が作用して乗員の足が踏板１１を踏み込む場合に、トーボード面３に対して踏板１１がなす４段階の角度のそれぞれにおいて衝撃力を受けて変形可能な第１〜第４衝撃力吸収部２１，２２，２３，２４を有している。第１〜第４衝撃力吸収部２１，２２，２３，２４，は、それぞれ所定の幅寸法の板状部材からなる。第１〜第３衝撃力吸収部２１，２２，２３は、幅方向に延びるとともに、左右両側が屈曲されてトーボード面３側に向かって延びる逆Ｕ字状に形成され、両端がトーボード面３を幅方向に延びる板状のベース２５に固定されている。また、第４衝撃力吸収部２４は、左右両側がトーボード面３に向かって斜め幅方向外側に延びるとともに、屈曲されてトーボード面３に向かって斜め幅方向内側に延びる菱形状に形成され、両端がベース２５に固定されている。   The impact force absorbing member 20 receives impact force at each of the four angles formed by the tread board 11 with respect to the toe board surface 3 when an impact force acts on the vehicle from the front and the foot of the occupant steps on the tread board 11. Deformable first to fourth impact force absorbing portions 21, 22, 23, 24 are provided. The first to fourth impact force absorbing portions 21, 22, 23, 24 are each made of a plate-like member having a predetermined width dimension. The first to third impact force absorbing portions 21, 22, and 23 are formed in an inverted U shape extending in the width direction and bent on the left and right sides and extending toward the toe board surface 3, It is fixed to a plate-like base 25 extending in the width direction. Further, the fourth impact force absorbing portion 24 is formed in a rhombus shape whose left and right sides extend outward in the oblique width direction toward the toe board surface 3 and bent and extends inward in the oblique width direction toward the toe board surface 3. Is fixed to the base 25.

第１〜第４衝撃力吸収部２１，２２，２３，２４は、図２に示すように、それぞれ対応するトーボード面３に対する踏板１１のなす角度において踏板１１の下面が当接する当接部２１ａ，２２ａ，２３ａ，２４ａと、当接部２１ａ，２２ａ，２３ａ，２４ａの幅方向両端からトーボード面３側に向かって延びるように形成され、作用する衝撃力によって変形可能な一対の変形部２１ｂ，２２ｂ，２３ｂ，２４ｂと、を有している。第１〜第４衝撃力吸収部２１，２２，２３，２４は、それぞれ吸収可能な衝撃力の吸収量が設定されている。   As shown in FIG. 2, the first to fourth impact force absorbing portions 21, 22, 23, and 24 are respectively abutting portions 21 a and abutting portions 21 a and abutment portions 21 a and abutd against the lower surface of the tread plate 11 at an angle between the corresponding toe board surfaces 3. 22a, 23a, 24a and a pair of deforming portions 21b, 22b that are formed so as to extend toward the toe board surface 3 side from both widthwise ends of the contact portions 21a, 22a, 23a, 24a, and can be deformed by an acting impact force. , 23b, 24b. The first to fourth impact force absorbing portions 21, 22, 23, and 24 are each set with an amount of impact force that can be absorbed.

第１衝撃力吸収部２１の一対の変形部２１ｂの間には、第２衝撃力吸収部２２が配置されている。また、第２衝撃力吸収部２２の一対の変形部２２ｂの間には、第３衝撃力吸収部２３が配置されている。さらに、第３衝撃力吸収部２３の一対の変形部２３ｂの間には、第４衝撃力吸収部２４が配置されている。第１〜第４衝撃力吸収部２１，２２，２３，２４は、それぞれ構成する板状部材の板厚を変更したり、材質を変更したりすることで、吸収可能な衝撃力の吸収量を設定可能である。   A second impact force absorbing portion 22 is disposed between the pair of deformable portions 21 b of the first impact force absorbing portion 21. Further, a third impact force absorbing portion 23 is disposed between the pair of deformable portions 22 b of the second impact force absorbing portion 22. Furthermore, a fourth impact force absorbing portion 24 is disposed between the pair of deformable portions 23 b of the third impact force absorbing portion 23. The first to fourth impact force absorbing portions 21, 22, 23, and 24 change the thickness of the plate-shaped members that are respectively configured, or change the material, thereby reducing the amount of impact force that can be absorbed. It can be set.

例えば、図３の車両の前方から衝撃力が加わる場合の乗員の足の変位と乗員の足に作用する荷重の関係を示す図では、衝撃力吸収部材２０がある場合を実線で示し、衝撃力吸収部材２０がない場合を一点鎖線で示している。衝撃力吸収部材２０がない場合には、乗員の足の変位に対して急激に衝撃力が乗員の足に作用している。また、衝撃力吸収部材２０がある場合には、第１、第４衝撃力吸収部２１，２４を低衝撃力で変形させて衝撃力を吸収させ、第２、第３衝撃力吸収部２２，２３を第１、第４衝撃力吸収部２１，２４よりも高い衝撃力で変形させて衝撃力を吸収させることで、乗員の足に作用する衝撃力を足の変位に対して一定とすることが可能となる。   For example, in the figure showing the relationship between the displacement of the occupant's foot and the load acting on the occupant's foot when the impact force is applied from the front of the vehicle in FIG. A case where there is no absorbing member 20 is indicated by a one-dot chain line. When the impact force absorbing member 20 is not provided, the impact force is rapidly applied to the occupant's foot with respect to the displacement of the occupant's foot. Further, when the impact force absorbing member 20 is present, the first and fourth impact force absorbing portions 21 and 24 are deformed with a low impact force to absorb the impact force, and the second and third impact force absorbing portions 22, 23 is deformed with an impact force higher than that of the first and fourth impact force absorbing portions 21 and 24 to absorb the impact force, thereby making the impact force acting on the occupant's foot constant with respect to the displacement of the foot. Is possible.

このように、各衝撃力吸収部２１，２２，２３，２４では、吸収可能な衝撃力の吸収量が設定可能であり、衝撃力のピークを調整することができる。それぞれの衝撃力吸収部２１，２２，２３，２４の板厚、材質の組み合わせにより、上記の例に拠らず様々な衝撃力のピークの調整ができることは言うまでも無い。   Thus, in each impact force absorption part 21,22,23,24, the absorption amount of the impact force which can be absorbed can be set, and the peak of impact force can be adjusted. It goes without saying that the peak of various impact forces can be adjusted by the combination of the plate thickness and material of each impact force absorbing portion 21, 22, 23, 24 without depending on the above example.

以上のように構成された車両のフロア構造において、フルラップ衝突やオフセット衝突によって走行中の車両に前方から衝撃力が加わる場合における乗員の左足Ｆの挙動を図４乃至図８を用いて説明する。   The behavior of the left foot F of the occupant when the impact force is applied to the traveling vehicle from the front by a full lap collision or an offset collision in the vehicle floor structure configured as described above will be described with reference to FIGS.

図４の状態において車両に前方から衝撃力が加わると、車両が急激に減速することによって乗員が前方に移動する。このとき、前方に移動する乗員の足Ｆは、衝撃力低減機構１０の踏板１１を踏み込んだ状態となるとともに、膝が前方に移動することによって乗員の足Ｆのつま先がすね側に曲げられる力が作用する。その後、踏板１１を踏み込んだ乗員の足Ｆは、図５に示すように、衝撃力吸収部材２０の第１衝撃力吸収部２１の当接部２１ａに踏板１１を当接させて変形部２１ｂを変形させることにより、つま先が前方に向く方向に回転する。これにより、乗員の膝の曲がりが解消される。その後、図６乃至図８に示すように、トーボード面３に対する踏板１１のそれぞれに対応する角度において第２〜第４衝撃力吸収部２２，２３，２４の当接部２２ａ，２３ｂ，２４ｂに踏板１１を当接させて変形部２２ｂ，２３ｂ，２４ｂを順に変形させることにより、段階的に足Ｆをつま先が前方に向く方向に回転させる。これにより、乗員の膝が前方に移動することによる足Ｆのつま先がすね側に曲がる方向に作用する力を解消させることができる。   When an impact force is applied to the vehicle from the front in the state of FIG. 4, the vehicle is rapidly decelerated, and the occupant moves forward. At this time, the occupant's foot F moving forward is in a state where the tread 11 of the impact force reduction mechanism 10 is stepped on, and the toe of the occupant's foot F is bent to the shin side by moving the knee forward. Works. Thereafter, the foot F of the occupant who has stepped on the tread 11 causes the tread 11 to abut on the abutment 21a of the first impact force absorbing portion 21 of the impact force absorbing member 20 as shown in FIG. By deforming, the toe rotates in a direction facing forward. Thereby, the bending | flexion of a passenger | crew's knee is eliminated. Thereafter, as shown in FIGS. 6 to 8, the contact plates 22a, 23b, 24b of the second to fourth impact force absorbing portions 22, 23, 24 are applied to the step plates at angles corresponding to the respective step plates 11 with respect to the toe board surface 3. 11, the deformed portions 22b, 23b, and 24b are sequentially deformed to rotate the foot F in a direction in which the toes are directed forward. Thereby, the force which acts on the direction in which the toe of the foot F bends to the shin side due to the occupant's knee moving forward can be eliminated.

このように、本実施形態の車両のフロア構造によれば、車両に前方から作用する衝撃力によって踏板１１が後端側を中心に回転する際に、衝撃力低減機構１０の衝撃力吸収部材２０を、トーボード面３に対して踏板１１がなす４段階の角度のそれぞれにおける衝撃力の吸収量をそれぞれ設定可能である。これにより、車両に前方から衝撃力が作用する際における乗員の下肢の挙動を制御することができるので、乗員の下肢の傷害値の低減を図ることが可能となる。   Thus, according to the vehicle floor structure of the present embodiment, when the tread 11 rotates about the rear end side due to the impact force acting on the vehicle from the front, the impact force absorbing member 20 of the impact force reducing mechanism 10. , The amount of impact force absorbed at each of the four stages of angles formed by the tread board 11 with respect to the toe board surface 3 can be set. Thereby, since the behavior of the lower limbs of the occupant when the impact force acts on the vehicle from the front can be controlled, the injury value of the lower limbs of the occupant can be reduced.

また、衝撃力吸収部材２０は、トーボード面３に対して踏板１１がなすそれぞれの角度において変形することで衝撃力を吸収可能な複数の衝撃力吸収部２１，２２，２３，２４を有している。これにより、トーボード面３に対して踏板１１がなす各角度における衝撃力の吸収量を個別に設定することができるので、衝撃力吸収部材２０の製造が容易となり、製造コストの低減を図ることが可能となる。   Further, the impact force absorbing member 20 has a plurality of impact force absorbing portions 21, 22, 23, and 24 that can absorb the impact force by being deformed at respective angles formed by the tread board 11 with respect to the toe board surface 3. Yes. Thereby, since the absorption amount of the impact force at each angle formed by the tread board 11 with respect to the toe board surface 3 can be set individually, the impact force absorbing member 20 can be easily manufactured and the manufacturing cost can be reduced. It becomes possible.

また、各衝撃力吸収部２１，２２，２３，２４は、トーボード面３に対する踏板１１のなすそれぞれの角度において踏板１１が当接する当接部２１ａ，２２ａ，２３ａ，２４ａと、当接部２１ａ，２２ａ，２３ａ，２４ａの両側からトーボード面３側に向かって延びるように形成され、作用する衝撃力によって変形可能な一対の変形部２１ｂ，２２ｂ，２３ｂ，２４ｂと、を有する。これにより、一対の変形部２１ｂ，２２ｂ，２３ｂ，２４ｂによって衝撃力を吸収することができるので、衝撃力吸収部材２０を構成する部材自体の板厚や材質等、強度を大きくする必要はなく製造コストの低減を図ることができる。   Further, each of the impact force absorbing portions 21, 22, 23, 24 includes contact portions 21a, 22a, 23a, 24a with which the tread plate 11 abuts at each angle formed by the tread plate 11 with respect to the toe board surface 3, and the abutting portions 21a, 21a, A pair of deformable portions 21b, 22b, 23b, and 24b that are formed so as to extend from both sides of 22a, 23a, and 24a toward the toe board surface 3 and that can be deformed by an acting impact force. Thereby, since the impact force can be absorbed by the pair of deformed portions 21b, 22b, 23b, and 24b, it is not necessary to increase the strength, such as the plate thickness or material of the member itself constituting the impact force absorbing member 20. Cost can be reduced.

また、第１衝撃力吸収部２１の一対の変形部２１ｂの間には、第２〜第４衝撃力吸収部２２，２３，２４が配置されている。これにより、衝撃力吸収部材２０を設置するために大きなスペースを必要としないため、衝撃力低減機構１０の小型化を図ることが可能となる。   In addition, between the pair of deformation portions 21 b of the first impact force absorbing portion 21, second to fourth impact force absorbing portions 22, 23, 24 are arranged. Thereby, since a large space is not required for installing the impact force absorbing member 20, the impact force reduction mechanism 10 can be downsized.

図９は本発明の第２実施形態を示すものである。尚、前記実施形態と同様の構成部分には同一の符号を付して示す。   FIG. 9 shows a second embodiment of the present invention. In addition, the same code | symbol is attached | subjected and shown to the component similar to the said embodiment.

この衝撃力低減機構１０の衝撃力吸収部材３０は、図９（ａ）に示すように、車両に前方から衝撃力が作用して乗員の足が踏板１１を踏み込む場合に、トーボード面３に対して踏板１１がなす４段階の角度のそれぞれにおいて衝撃力を受けて変形可能な第１〜第４衝撃力吸収部３１，３２，３３，３４を有している。   As shown in FIG. 9A, the impact force absorbing member 30 of the impact force reducing mechanism 10 is applied to the toe board surface 3 when an impact force acts on the vehicle from the front and the occupant's foot steps on the tread plate 11. The first to fourth impact force absorbing portions 31, 32, 33, and 34 can be deformed by receiving an impact force at each of the four angles formed by the tread plate 11.

第１〜第４衝撃力吸収部３１，３２，３３，３４は、図９（ｂ）に示すように、それぞれ対応するトーボード面３に対する踏板１１のなす角度において踏板１１の下面が当接する当接部３１ａ，３２ａ，３３ａ，３４ａと、当接部３１ａ，３２ａ，３３ａ，３４ａの幅方向両端からトーボード面３側に向かって延びるように形成され、作用する衝撃力によって変形可能な一対の変形部３１ｂ，３２ｂ，３３ｂ，３４ｂと、を有している。また、一対の変形部３１ｂ，３２ｂ，３３ｂ，３４ｂの端部は、幅方向に延びるベース３５に固定されている。さらに、一対の変形部３１ｂ，３２ｂ，３３ｂ，３４ｂは、それぞれ幅方向外側に張り出すように屈曲形成されている。   As shown in FIG. 9B, the first to fourth impact force absorbing portions 31, 32, 33, and 34 are in contact with the lower surface of the tread plate 11 at an angle formed by the tread plate 11 with respect to the corresponding toe board surface 3. A pair of deformable portions that are formed so as to extend from both ends in the width direction of the contact portions 31a, 32a, 33a, and 34a toward the toe board surface 3 side and that can be deformed by an acting impact force. 31b, 32b, 33b, 34b. Moreover, the edge part of a pair of deformation | transformation part 31b, 32b, 33b, 34b is being fixed to the base 35 extended in the width direction. Further, the pair of deformable portions 31b, 32b, 33b, and 34b are bent to project outward in the width direction.

以上のように構成された車両のフロア構造において、走行中の車両に前方から衝撃力が加わると、第１実施形態と同様に、第１〜第４衝撃力吸収部３１，３２，３３，３４の当接部３１ａ，３２ａ，３３ｂ，３４ｂに踏板１１を当接させて変形部３１ｂ，３２ｂ，３３ｂ，３４ｂを順に変形させることにより、段階的に足Ｆをつま先が前方に向く方向に回転させる。これにより、乗員の膝が前方に移動することによる足Ｆのつま先がすね側に曲がる方向に作用する力を解消させることができる。   In the vehicle floor structure configured as described above, when an impact force is applied to the traveling vehicle from the front, the first to fourth impact force absorbing portions 31, 32, 33, and 34 are the same as in the first embodiment. The foot plate 11 is brought into contact with the contact portions 31a, 32a, 33b, 34b and the deformed portions 31b, 32b, 33b, 34b are sequentially deformed to rotate the foot F in a direction in which the toes are directed forward. . Thereby, the force which acts on the direction in which the toe of the foot F bends to the shin side due to the occupant's knee moving forward can be eliminated.

また、一対の変形部３１ｂ，３２ｂ，３３ｂ，３４ｂは、それぞれ幅方向外側に張り出すように屈曲形成されているので、変形する際にそれぞれの屈曲している部分が幅方向外側に折れ曲がるため、変形後の高さ寸法を小さくすることが可能となる。   In addition, since the pair of deformed portions 31b, 32b, 33b, and 34b are bent so as to project outward in the width direction, the respective bent portions are bent outward in the width direction when deformed. It becomes possible to reduce the height dimension after deformation.

このように、本実施形態の車両のフロア構造によれば、第１実施形態と同様に、車両に前方から衝撃力が作用する際における乗員の下肢の挙動を制御することができるので、乗員の下肢の傷害値の低減を図ることが可能となる。   As described above, according to the vehicle floor structure of the present embodiment, the behavior of the lower limbs of the occupant when the impact force acts on the vehicle from the front can be controlled as in the first embodiment. It is possible to reduce the injury value of the lower limbs.

また、一対の変形部３１ｂ，３２ｂ，３３ｂ，３４ｂが、それぞれ幅方向外側に張り出すように屈曲形成されている。これにより、第１〜第４衝撃力吸収部３１，３２，３３，３４の変形後の高さ寸法を小さくすることが可能となるので、第１〜第４衝撃力吸収部３１，３２，３３，３４において確実に衝撃力を吸収することが可能となる。   Further, the pair of deformed portions 31b, 32b, 33b, and 34b are formed to be bent so as to project outward in the width direction. Thereby, since it becomes possible to make small the height dimension after a deformation | transformation of the 1st-4th impact force absorption part 31,32,33,34, the 1st-4th impact force absorption part 31,32,33. , 34 can reliably absorb the impact force.

図１０は本発明の第３実施形態を示すものである。尚、前記実施形態と同様の構成部分には同一の符号を付して示す。   FIG. 10 shows a third embodiment of the present invention. In addition, the same code | symbol is attached | subjected and shown to the component similar to the said embodiment.

この衝撃力低減機構１０の衝撃力吸収部材４０は、図１０（ａ）に示すように、車両に前方から衝撃力が作用して乗員の足が踏板１１を踏み込む場合に、トーボード面３に対して踏板１１がなす３段階の角度のそれぞれにおいて衝撃力を受けて変形可能な第１〜第３衝撃力吸収部４１，４２，４３を有している。   As shown in FIG. 10A, the impact force absorbing member 40 of the impact force reducing mechanism 10 is applied to the toe board surface 3 when an impact force acts on the vehicle from the front and the occupant's foot steps on the tread plate 11. The first to third impact force absorbing portions 41, 42, and 43 that can be deformed by receiving an impact force at each of the three stages of angles formed by the tread plate 11.

第１〜第３衝撃力吸収部４１，４２，４３は、図１０（ｂ）に示すように、それぞれ対応するトーボード面３に対する踏板１１のなす角度において踏板１１の下面が当接する当接部４１ａ，４２ａ，４３ａと、当接部４１ａ，４２ａ，４３ａからトーボード面３側に向かって延びるように形成され、作用する衝撃力によって変形可能な変形部４１ｂ，４２ｂ，４３ｂと、を有している。また、変形部４１ｂ，４２ｂ，４３ｂの端部は、幅方向に延びるベース４４に固定されている。   As shown in FIG. 10 (b), the first to third impact force absorbing portions 41, 42, 43 are abutting portions 41 a with which the lower surface of the tread plate 11 abuts at the angle formed by the tread plate 11 with respect to the corresponding toe board surface 3. , 42a, 43a, and deformed portions 41b, 42b, 43b that are formed so as to extend from the contact portions 41a, 42a, 43a toward the toe board surface 3 and can be deformed by an acting impact force. . Moreover, the edge part of deformation | transformation part 41b, 42b, 43b is being fixed to the base 44 extended in the width direction.

第１〜第３衝撃力吸収部４１，４２，４３は、互いの屈曲された部分を重ねるように前後方向に並べて配置されている。   The first to third impact force absorbing portions 41, 42, 43 are arranged side by side in the front-rear direction so as to overlap each other's bent portions.

以上のように構成された車両のフロア構造において、走行中の車両に前方から衝撃力が加わると、第１実施形態と同様に、第１〜第３衝撃力吸収部４１，４２，４３の当接部４１ａ，４２ａ，４３ｂに踏板１１を当接させて変形部４１ｂ，４２ｂ，４３ｂを順に変形させることにより、段階的に足Ｆをつま先が前方に向く方向に回転させる。これにより、乗員の膝が前方に移動することによる足Ｆのつま先がすね側に曲がる方向に作用する力を解消させることができる。   In the vehicle floor structure configured as described above, when an impact force is applied to the traveling vehicle from the front, the first to third impact force absorbing portions 41, 42, 43 are applied as in the first embodiment. The tread plate 11 is brought into contact with the contact portions 41a, 42a, and 43b, and the deformed portions 41b, 42b, and 43b are sequentially deformed, thereby rotating the foot F in a direction in which the toes are directed forward. Thereby, the force which acts on the direction in which the toe of the foot F bends to the shin side due to the occupant's knee moving forward can be eliminated.

このように、本実施形態の車両のフロア構造によれば、第１実施形態と同様に、車両に前方から衝撃力が作用する際における乗員の下肢の挙動を制御することができるので、乗員の下肢の傷害値の低減を図ることが可能となる。   As described above, according to the vehicle floor structure of the present embodiment, the behavior of the lower limbs of the occupant when the impact force acts on the vehicle from the front can be controlled as in the first embodiment. It is possible to reduce the injury value of the lower limbs.

また、第１〜第３衝撃力吸収部４１，４２，４３は、互いの屈曲された部分を重ねるように前後方向に並べて配置されている。これにより、衝撃力吸収部材４０を設置するために大きなスペースを必要としないため、衝撃力低減機構１０の小型化を図ることが可能となる。   Moreover, the 1st-3rd impact-force absorption parts 41,42,43 are arrange | positioned along with the front-back direction so that the mutually bent part may be piled up. Thereby, since a large space is not required for installing the impact force absorbing member 40, the impact force reducing mechanism 10 can be downsized.

尚、前記実施形態では、助手席１のトーボード面３の外周部を除く全体を衝撃力低減機構１０の踏板１１が覆うようにしたものを示したが、これに限られるものではない。例えば、乗員の左右の足Ｆのそれぞれに１つずつ衝撃力低減機構１０を構成してもよいし、左右の足Ｆの一方のみに衝撃力低減機構１０を構成するようにしてもよい。この場合、衝撃力低減機構１０は、フットレストとして用いることが可能である。   In addition, although the said embodiment showed what the tread board 11 of the impact force reduction mechanism 10 covered the whole except the outer peripheral part of the toe board surface 3 of the passenger seat 1, it is not restricted to this. For example, one impact force reduction mechanism 10 may be configured for each of the left and right feet F of the occupant, or the impact force reduction mechanism 10 may be configured for only one of the left and right feet F. In this case, the impact force reduction mechanism 10 can be used as a footrest.

また、前記実施形態では、踏板１１の後端側を床面２の前端部に支持する支持部材１２を板状部材から形成したものを示したが、これに限られるものではない。車両に前方から衝撃力が作用して乗員が踏板１１を踏み込んだ場合に、踏板１１の後端側を中心にして踏板１１を回転させるものであれば、例えば、蝶番によって踏板の後端側と床面２の前端部を連結するようにしてもよい。   Moreover, although the said embodiment showed what formed the support member 12 which supports the rear-end side of the tread board 11 in the front-end part of the floor surface 2 from the plate-shaped member, it is not restricted to this. If an impact force acts on the vehicle from the front and the occupant steps on the tread 11, if the tread 11 is rotated around the rear end of the tread 11, for example, You may make it connect the front-end part of the floor surface 2. FIG.

１…助手席、２…床面、３…トーボード面、１０…衝撃力低減機構、１１…踏板、１２…支持部材、２０…衝撃力吸収部材、２１，２２，２３，２４…第１〜第４衝撃力吸収部、２１ａ，２２ａ，２３ａ，２４ａ…当接部、２１ｂ，２２ｂ，２３ｂ，２４ｂ…変形部、３０…衝撃力吸収部材、３１ａ，３２ａ，３３ａ，３４ａ…当接部、３１ｂ，３２ｂ，３３ｂ，３４ｂ…変形部、４０…衝撃力吸収部材、４１ａ，４２ａ，４３ａ…当接部、４１ｂ，４２ｂ，４３ｂ…変形部。   DESCRIPTION OF SYMBOLS 1 ... Passenger seat, 2 ... Floor surface, 3 ... Toe board surface, 10 ... Impact force reduction mechanism, 11 ... Tread, 12 ... Support member, 20 ... Impact force absorption member, 21, 22, 23, 24 ... 1st-1st 4 impact force absorbing portions, 21a, 22a, 23a, 24a ... contact portions, 21b, 22b, 23b, 24b ... deformed portions, 30 ... impact force absorbing members, 31a, 32a, 33a, 34a ... contact portions, 31b, 32b, 33b, 34b ... deformed portion, 40 ... impact force absorbing member, 41a, 42a, 43a ... contact portion, 41b, 42b, 43b ... deformed portion.

Claims (2)

着座した乗員の足が位置し、床面から前方に向かって斜め上方に立ち上がるトーボード面を有する車両のフロア構造において、
車両の前方から衝撃力が作用する場合に、乗員に伝わる衝撃力を低減する衝撃力低減機構を備え、
前記衝撃力低減機構は、乗員の足で踏まれる踏板と、前記踏板の後端側を中心に前端側を下方に回転可能に前記踏板の後端側を支持する支持部材と、前記踏板の前端側と前記トーボード面との間に設けられ、変形させることで衝撃力を吸収する衝撃力吸収部材と、を有し、
前記衝撃力吸収部材は、
前記踏板が後端側を中心に回転する際の前記トーボード面に対して前記踏板がなす複数の角度のそれぞれにおける衝撃力の吸収量がそれぞれ設定可能であり、
前記トーボード面に対して前記踏板がなすそれぞれの角度において変形することで衝撃力を吸収可能な複数の衝撃力吸収部を有し、
各前記衝撃力吸収部は、
前記トーボード面に対する前記踏板のなすそれぞれの角度において踏板が当接する当接部と、
前記当接部の所定方向の両側からそれぞれ屈曲して前記トーボード面側に向かって延びるように形成され、衝撃力によって変形可能な一対の変形部と、を有し、
少なくとも各前記当接部が車両の前後方向において互いに離間して対向配置されている
ことを特徴とする車両のフロア構造。 In a vehicle floor structure having a toe board surface on which a foot of a seated occupant is located and rises obliquely upward from the floor surface toward the front,
Equipped with an impact force reduction mechanism that reduces the impact force transmitted to the occupant when impact force acts from the front of the vehicle,
The impact force reducing mechanism includes a step board that can be stepped on by a passenger's foot, a support member that supports the rear end side of the tread board so that the front end side can be rotated downward about the rear end side of the tread board, and the front end of the tread board An impact force absorbing member which is provided between the side and the toe board surface and absorbs the impact force by being deformed;
The impact force absorbing member is
The tread plate is Ri each configurable der absorption amount of impact force at each of a plurality of angles which the tread plate with respect to the said toe board surface when rotated about the rear end,
Having a plurality of impact force absorbing portions capable of absorbing impact force by deforming at each angle formed by the tread board with respect to the toe board surface;
Each of the impact force absorbing parts is
A contact portion with which the tread plate abuts at each angle formed by the tread plate with respect to the toe board surface;
A pair of deformable portions that are formed to bend from both sides in a predetermined direction of the contact portion and extend toward the toe board surface side, and are deformable by an impact force;
Floor structure of a vehicle, wherein at least each of said contact portion that are opposed spaced apart from each other in the longitudinal direction of the vehicle. 前記一対の変形部は、それぞれ外側に張り出すように屈曲形成されている
ことを特徴とする請求項１に記載の車両のフロア構造。 The vehicle floor structure according to claim 1 , wherein the pair of deformable portions are bent so as to project outward.
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