JP2007083902A - Lower limb impact absorbing pad for vehicle - Google Patents

Lower limb impact absorbing pad for vehicle Download PDF

Info

Publication number
JP2007083902A
JP2007083902A JP2005275926A JP2005275926A JP2007083902A JP 2007083902 A JP2007083902 A JP 2007083902A JP 2005275926 A JP2005275926 A JP 2005275926A JP 2005275926 A JP2005275926 A JP 2005275926A JP 2007083902 A JP2007083902 A JP 2007083902A
Authority
JP
Japan
Prior art keywords
pad
vehicle
lower limb
different
absorbing pad
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2005275926A
Other languages
Japanese (ja)
Other versions
JP4963818B2 (en
Inventor
伸治 ▲高▼倉
Shinji Takakura
Takatsugu Suzuki
崇嗣 鈴木
Yuuyuubi Hiraishi
有由美 平石
Isao Suzuki
勇雄 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Kasei Co Ltd
Original Assignee
Sekisui Plastics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sekisui Plastics Co Ltd filed Critical Sekisui Plastics Co Ltd
Priority to JP2005275926A priority Critical patent/JP4963818B2/en
Publication of JP2007083902A publication Critical patent/JP2007083902A/en
Application granted granted Critical
Publication of JP4963818B2 publication Critical patent/JP4963818B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Passenger Equipment (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lower limb impact absorbing pad for a vehicle which can effectively absorb impacts even if there is restriction in an impact absorbing amount caused by a vehicle structure or the like. <P>SOLUTION: This lower limb impact absorbing pad 1 for the vehicle comprises a foamed molded article for which regions 1A and 1B having different hardnesses are formed by using different kinds of raw materials in the plane direction. In this case, different kinds of raw materials are for the application of a preliminary foaming particle having a different expansion rate, and the application of the preliminary foaming particle having different material quality. Also, a plurality of recessed grooves can be formed in advance on a surface which becomes a vehicle body side when the pad 1 is installed to the vehicle. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、車両衝突時における乗員の下肢部を保護するための車両用衝撃吸収パッドに係り、車両構造等による衝撃吸収量に制約がある場合であっても、衝撃をより有効に吸収できる車両用下肢部衝撃吸収パッドに関するものである。   The present invention relates to a vehicle shock absorbing pad for protecting a lower limb of an occupant at the time of a vehicle collision, and a vehicle capable of absorbing a shock more effectively even when the amount of shock absorption by a vehicle structure or the like is limited. The present invention relates to a lower limb shock absorbing pad.

例えば特許文献１，２において、車両衝突時に乗員の下肢部を保護するための車両用衝撃吸収パッドに関する発明が開示されている。特許文献１に開示の衝撃吸収パッド（フート・レスト）は、ポリスチロール等からなる無垢の発泡体から成形されており、このフート・レストを車両室内の乗員足元に配置しておき、車両衝突時に発生する衝撃に対して発泡体を塑性変形させて乗員の足をその中にできるだけ低速度で埋没させることにより、乗員の下肢部を保護するようにしたものである。   For example, Patent Documents 1 and 2 disclose inventions related to a vehicle shock absorbing pad for protecting a lower limb portion of an occupant during a vehicle collision. The shock absorbing pad (foot rest) disclosed in Patent Document 1 is formed from a solid foam made of polystyrene or the like, and this foot rest is placed at the foot of an occupant in the vehicle compartment so that it can be used during a vehicle collision. The foam is plastically deformed against the generated impact, and the occupant's legs are buried in the occupant's feet at the lowest possible speed, thereby protecting the lower limbs of the occupant.

特許文献１のフート・レストは無垢の発泡体からなるものであるが、かかる無垢の発泡体を圧縮した場合には、その塑性変形による衝撃吸収特性が一定であることから、運動エネルギーを効果的に吸収できない場合が生じ得る。特許文献２に開示の下肢部衝撃吸収パッドはこの問題を解決するために提案されたものであり、発泡成形品の車両設置時に車体側となる面に車両前後方向に延設する縦長状の凹溝を設けた発泡成形品に関するものである。車両衝突時にこの凹溝が塑性変形することによって短時間で多くのエネルギーを吸収でき、乗員の下肢部に作用する衝撃荷重を障害限界値未満にすることができる。   The foot rest of Patent Document 1 is made of a solid foam, but when such a solid foam is compressed, the impact absorption characteristics due to its plastic deformation are constant, so that the kinetic energy is effective. May not be absorbed. The lower limb shock absorbing pad disclosed in Patent Document 2 has been proposed to solve this problem, and is a vertically long recess extending in the vehicle front-rear direction on the surface that becomes the vehicle body side when the foam molded product is installed in the vehicle. The present invention relates to a foam molded product provided with a groove. A large amount of energy can be absorbed in a short time by plastic deformation of the concave groove at the time of a vehicle collision, and the impact load acting on the lower limbs of the occupant can be made less than the obstacle limit value.

特公平６−１７０９７号公報Japanese Examined Patent Publication No. 6-17097 特開２００４−３０６７９１号公報JP 2004-306791 A

特許文献２の車両用衝撃吸収パッドによれば、発泡成形体から成形されており、さらにその床面側の形状が車両前後方向に延設する縦長状の凹溝等に成形されていることから、極めて高い衝撃吸収性能を得ることができる。ここで、衝撃吸収性能とは、車両衝突時の運動エネルギーを衝撃吸収パッドの塑性変形にて吸収する性能のことである。   According to the vehicle impact absorbing pad of Patent Document 2, it is molded from a foam molded body, and the shape of the floor surface side is molded into a vertically long concave groove extending in the vehicle front-rear direction. , Extremely high shock absorbing performance can be obtained. Here, the shock absorbing performance is a performance of absorbing kinetic energy at the time of a vehicle collision by plastic deformation of the shock absorbing pad.

ところで、車両用衝撃吸収パッドは、車両に設置される際、車両構造等により多くの制約を受ける。運転席の足元を例に挙げれば、右足側にはブレーキペダルやアクセルペダルが接続される機器が車両ボディーに搭載されている一方で、左足側にはかかる機器が存在しないため、足元に設置される下肢部衝撃吸収パッドのうち、右足側は左足側に比して相対的に厚みが薄くなる場合がある。また、助手席の足元においては、車両ボディーに搭載されているダクトの配管態様により、制約を受けることとなる。   By the way, when the vehicle impact absorbing pad is installed in a vehicle, it is subject to many restrictions due to the vehicle structure and the like. Taking the foot of the driver's seat as an example, the vehicle body is equipped with a device to which a brake pedal or accelerator pedal is connected on the right foot side, but there is no such device on the left foot side, so it is installed at the foot. Among the lower limb shock absorbing pads, the right foot side may be relatively thinner than the left foot side. In addition, the feet of the passenger seat are restricted by the piping mode of the duct mounted on the vehicle body.

特許文献１，２の車両用衝撃吸収パッドでは、該パッドが製品全体として均一の硬さからなるため、車両構造によっては衝撃吸収性能に制約を受け、適応できない場合もあった。   In the vehicle impact absorbing pad of Patent Documents 1 and 2, since the pad is made of a uniform hardness as a whole product, depending on the vehicle structure, there is a case where the impact absorbing performance is restricted and cannot be applied.

本発明の車両用下肢部衝撃吸収パッドは、上記する問題に鑑みてなされたものであり、
車両構造からの制約によって衝撃吸収パッドの形状（厚み）が平面的に異なるため、衝撃吸収量に制約がある場合であっても、衝撃をより有効に吸収できる車両用下肢部衝撃吸収パッドを提供することを目的としている。 The vehicle lower limb shock absorbing pad of the present invention is made in view of the above-mentioned problems,
Since the shape (thickness) of the shock absorbing pad differs in plan due to constraints from the vehicle structure, we provide a vehicle lower limb shock absorbing pad that can absorb shock more effectively even when the amount of shock absorption is limited. The purpose is to do.

前記目的を達成すべく、本発明による車両用下肢部衝撃吸収パッドは、乗員の足が載置される車両用下肢部衝撃吸収パッドであって、前記車両用下肢部衝撃吸収パッドは、平面方向において異種原料を用いて硬さの異なる領域が形成されている発泡成形品からなることを特徴とする。   In order to achieve the above object, a vehicle lower limb shock absorbing pad according to the present invention is a vehicle lower limb shock absorbing pad on which an occupant's foot is placed, and the vehicle lower limb shock absorbing pad is planar. In a foam molded product in which regions of different hardness are formed using different raw materials.

下肢部衝撃吸収パッドを成形する熱可塑性樹脂は特に限定するものではないが、例えば、スチレン改質ポリエチレン系樹脂、ポリスチレン系樹脂、ポリエチレン系樹脂、ポリプロピレン系樹脂などを使用することができる。中でも、ポリエチレン系樹脂粒子にスチレン系単量体を含浸重合させて得られるスチレン改質ポリエチレン系樹脂のビーズ発泡成形品は、ポリエチレン系樹脂ビーズの発泡成形品やポリプロピレン系樹脂ビーズの発泡成形品に比べて、寸法安定性と形状保持性に優れていること、ポリスチレン系樹脂ビーズの発泡成形品に比べて擦れによる粉が出難いことの理由から特に好ましい。また、スチレン改質ポリエチレン系樹脂におけるスチレン成分の割合は４０〜９０重量％、好ましくは５０〜８５重量％、より好ましくは５５〜７５重量％である。   The thermoplastic resin for molding the lower limb impact absorbing pad is not particularly limited, and for example, a styrene-modified polyethylene resin, a polystyrene resin, a polyethylene resin, a polypropylene resin, or the like can be used. Above all, styrene-modified polyethylene resin bead foam molded products obtained by impregnating and polymerizing styrene monomers into polyethylene resin particles are foam molded products of polyethylene resin beads and polypropylene resin beads. In comparison, it is particularly preferred because of its superior dimensional stability and shape retention, and the fact that powder due to rubbing is less likely to occur as compared with foamed molded products of polystyrene-based resin beads. The proportion of the styrene component in the styrene-modified polyethylene resin is 40 to 90% by weight, preferably 50 to 85% by weight, more preferably 55 to 75% by weight.

また、車両用下肢部衝撃吸収パッドは、複数の厚みの異なる領域から構成された形状を呈しており、車種や設置場所（運転席側または助手席側）の相違などによって多様な形態がある。例えば運転席側の足元に設置されるパッドにおいては、その左足側と右足側で厚みが異なる形態や、車両の前後方向で厚みが異なる形態、さらには、左右および前後のそれぞれで厚みが異なる形態などがある。車両の前後方向で厚みを異ならせる形態とは、車両の正面または後方からの衝突時において、つま先に乗員の重量以上の集中荷重が作用した際に、パッドの前方がいわゆる底づき状態とならないように、該パッドの前方部分の密度を後方部分に比して相対的に高くしておくものである。   In addition, the vehicle lower limb shock absorbing pad has a shape composed of a plurality of regions having different thicknesses, and has various forms depending on the vehicle type and the installation location (driver's seat side or passenger seat side). For example, in the pad installed at the foot of the driver's seat, the thickness is different in the left foot side and the right foot side, the thickness is different in the front-rear direction of the vehicle, and the thickness is different in the left and right and front and rear and so on. The form in which the thickness varies in the front-rear direction of the vehicle is to prevent the front of the pad from becoming a so-called bottom-down state when a concentrated load exceeding the weight of the occupant acts on the toes in a collision from the front or rear of the vehicle. In addition, the density of the front portion of the pad is relatively higher than that of the rear portion.

下肢部衝撃吸収パッドの成形に際しては、上記するスチレン改質ポリエチレン系樹脂をはじめとする熱可塑性樹脂に、発泡剤を含浸させて発泡性の熱可塑性樹脂とし、該発泡性の熱可塑性樹脂を加熱水蒸気等で予備発泡させることで予備発泡粒子を製造する。次いで、かかる予備発泡粒子を成形型に充填し、発泡成形すればよい。ここで、車両用下肢部衝撃吸収パッドの発泡倍率は、例えば５〜７０倍の範囲内で調整した予備発泡粒子により成形するのがよい。発泡倍率が５倍未満のものは非常に硬くなるため、発泡体による十分な塑性変形性能を期待することができない。一方、発泡倍率が７０倍を越えてしまうと、発泡体が軟らかすぎてしまい、発泡体としての反発力を得ることが難しくなる。   When molding the lower limb impact absorbing pad, a thermoplastic resin such as the above-mentioned styrene-modified polyethylene resin is impregnated with a foaming agent to form a foamable thermoplastic resin, and the foamable thermoplastic resin is heated. Prefoamed particles are produced by prefoaming with water vapor or the like. Then, the pre-expanded particles are filled in a mold and foam-molded. Here, the expansion ratio of the vehicle lower limb impact absorbing pad is preferably formed by pre-expanded particles adjusted within a range of, for example, 5 to 70 times. Since the thing with a foaming ratio of less than 5 becomes very hard, sufficient plastic deformation performance by a foam cannot be expected. On the other hand, if the expansion ratio exceeds 70 times, the foam is too soft, and it becomes difficult to obtain a repulsive force as the foam.

本発明の下肢部衝撃吸収パッドは、平面方向において異種原料を用いて硬さの異なる領域が形成されている発泡成形品であることから、車両構造による制約に応じて、成形品の部位ごとに硬さを適宜に異ならせることにより、いずれの部位においても所望の衝撃吸収性能を備えた衝撃吸収パッドを得ることができる。   The lower limb impact absorbing pad of the present invention is a foamed molded product in which regions of different hardness are formed using different raw materials in the planar direction. By appropriately varying the hardness, an impact absorbing pad having a desired impact absorbing performance can be obtained at any part.

ここで、本明細書における衝撃吸収性能の概念について図８に基づき説明する。
一般に、塑性変形を伴う製品の荷重−歪み曲線は右上がりの曲線となる。例えば発泡倍率が低く、したがって硬い原料からなるパッドの場合には、概略的には図８のＡ線で示すように荷重−歪み曲線は右上がりの直線となり、該パッドは衝撃エネルギーを吸収する一方でパッド自体は潰れることがなく、したがって、衝撃荷重は障害値限界線Ｋ、すなわち、乗員の下肢部に障害を与える限界値を超えてしまう可能性が高い。一方、発泡倍率が高く、したがって軟らかい原料からなるパッドの場合には、図のＢ線で示すように、衝撃エネルギーを吸収する前にパッド自体が潰れてしまい、したがって、衝撃荷重はパッドが潰れた後に急激に上昇し、やはり、乗員の下肢部に障害を与える限界値Ｋを超えてしまう可能性が高くなる。 Here, the concept of the shock absorbing performance in this specification will be described with reference to FIG.
Generally, the load-strain curve of a product accompanied by plastic deformation is an upward curve. For example, in the case of a pad made of a hard material with a low foaming ratio, the load-strain curve becomes a straight line that rises to the right as schematically shown by line A in FIG. 8, and the pad absorbs impact energy. Therefore, the pad itself is not crushed, and therefore, the impact load is likely to exceed the obstacle value limit line K, that is, the limit value that impairs the lower limbs of the occupant. On the other hand, in the case of a pad made of a soft raw material with a high expansion ratio, the pad itself is crushed before absorbing the impact energy as shown by the line B in the figure, and therefore the impact load is crushed. There is a high possibility that it will rise rapidly later and exceed the limit value K that will cause damage to the lower limbs of the occupant.

そこで、車両の衝突初期には低発泡倍率の発泡体の荷重−歪み曲線と同様に短時間で多くの衝撃エネルギーを吸収できるようにし、障害値限界値Ｋよりも低い荷重値Ｐからは、荷重を増大させる代わりに発泡体自体の歪みを進行させることにより、下肢部に障害を与えることなく（あるいは、下肢部への衝撃を許容範囲内に低減して）、発泡体による衝撃エネルギーの吸収がおこなわれることが望ましく、図におけるＣ線のような特性が理想的である。Ａ線の特性を有するパッドにおける衝突時の吸収運動エネルギーを図のＥ１斜線部とすれば、Ｃ線の特性を有するパッドの場合には、その塑性変形性能により、Ｅ１斜線部と同じ面積を有するＥ２斜線部によって、障害値限界値Ｋを超えることなく同等の運動エネルギーを吸収することができる。かかる性能が、ここでいう衝撃吸収性能の概念である。   Therefore, in the initial stage of the vehicle collision, a large amount of impact energy can be absorbed in a short time like the load-strain curve of the foam having a low foaming ratio, and the load value P lower than the obstacle value limit value K By increasing the distortion of the foam itself instead of increasing the impact, it is possible to absorb the impact energy by the foam without damaging the lower limb (or reducing the impact on the lower limb within an allowable range). It is desirable that this is performed, and characteristics such as the C line in the figure are ideal. If the absorbed kinetic energy at the time of collision in the pad having the A-line characteristic is the E1 shaded portion in the figure, the pad having the C-line characteristic has the same area as the E1 shaded portion due to its plastic deformation performance. The E2 shaded portion can absorb the equivalent kinetic energy without exceeding the obstacle value limit value K. Such performance is the concept of shock absorbing performance referred to here.

また、本発明による車両用下肢部衝撃吸収パッドの他の実施形態は、異種原料として発泡倍率の異なる予備発泡粒子を用いることを特徴とする。   Another embodiment of the vehicle lower limb impact absorbing pad according to the present invention is characterized in that pre-expanded particles having different expansion ratios are used as different raw materials.

複数の厚みの異なる領域からなり、製品全体として同等の衝撃吸収性能を有する下肢部衝撃吸収パッドを成形する方法として、厚みの異なる領域ごとに原料の発泡倍率を変化させる方法を適用できる。例えば、２つの厚みの異なる領域からパッドが構成されている場合には、予備発泡粒子の発泡倍率を予め異なる発泡倍率にて製造しておき、２種類の予備発泡粒子を成形型に充填して発泡成形することができる。この際、成形型のキャビティ内を仕切り部材で仕切っておき、仕切り部材の左右の空間に各予備発泡粒子を同時充填し、充填後にキャビティ内から仕切り部材を除去するのがよい。双方の発泡粒子による境界域をジグザグ状に形成することができ、該境界域において縁切れし難いパッドを成形することができる。   As a method of forming a lower limb shock absorbing pad that is composed of a plurality of regions having different thicknesses and has equivalent shock absorbing performance as a whole product, a method of changing the foaming ratio of the raw material for each region having different thicknesses can be applied. For example, when the pad is composed of two regions having different thicknesses, the expansion ratio of the pre-expanded particles is manufactured in advance at different expansion ratios, and two types of pre-expanded particles are filled in the mold. It can be foam-molded. At this time, it is preferable to partition the inside of the mold cavity with a partition member, and simultaneously fill the left and right spaces of the partition member with the respective pre-expanded particles, and remove the partition member from the cavity after filling. A boundary region formed by both the foamed particles can be formed in a zigzag shape, and a pad that is difficult to be cut off in the boundary region can be formed.

本発明の下肢部衝撃吸収パッドによれば、同材質の予備発泡粒子の発泡倍率を適宜に調整させるだけで、パッドの硬さを平面的に多様に変化させることができるため、車両構造による制約があっても製品全体として所望の衝撃吸収エネルギーを備えた衝撃吸収パッドを得ることが可能となる。   According to the lower limb impact absorbing pad of the present invention, the hardness of the pad can be varied in a variety of planes only by appropriately adjusting the expansion ratio of the pre-expanded particles of the same material. Even if it exists, it becomes possible to obtain the impact-absorbing pad provided with the desired impact-absorbing energy as the whole product.

また、本発明による車両用下肢部衝撃吸収パッドの他の実施形態は、異種原料として材質の異なる予備発泡粒子を用いることを特徴とする。   Another embodiment of the vehicle lower limb shock absorbing pad according to the present invention is characterized by using pre-expanded particles made of different materials as different materials.

材質を異ならせるとは、例えば、上記するスチレン改質ポリエチレン系樹脂、ポリスチレン系樹脂、ポリエチレン系樹脂、ポリプロピレン系樹脂のうちの複数種類の原料から１つのパッドが一体成形されることである。   The different materials are, for example, that one pad is integrally formed from a plurality of types of raw materials among the styrene-modified polyethylene resin, polystyrene resin, polyethylene resin, and polypropylene resin described above.

本発明の下肢部衝撃吸収パッドによれば、異なる材質の予備発泡粒子の発泡倍率を同じ発泡倍率にも異なる発泡倍率にも調整することができるため、異なる硬さ領域のバリエーションを一層増やすことができ、車両構造による多様な制約に応じた衝撃吸収パッドを得ることが可能となる。   According to the lower limb impact absorbing pad of the present invention, the expansion ratio of the pre-expanded particles of different materials can be adjusted to the same expansion ratio or different expansion ratios, so that the variation of different hardness regions can be further increased. In addition, it is possible to obtain an impact absorbing pad according to various restrictions depending on the vehicle structure.

さらに、本発明による車両用下肢部衝撃吸収パッドの他の実施形態は、車両への設置時に車体側となる面には、複数の凹溝が形成されていることを特徴とする。   Furthermore, another embodiment of the vehicle lower limb impact absorbing pad according to the present invention is characterized in that a plurality of concave grooves are formed on a surface which is on the vehicle body side when installed in a vehicle.

下肢部衝撃吸収パッドの車体側の面に形成される凹溝の形状は任意であり、その溝深さも適宜に調整できる。パッドの車体側の面に複数の凹溝を形成しておくことにより、該車体側の面は車室内側の面に比して断面欠損の分だけ衝撃荷重に対して潰れ易くなる（塑性変形し易くなる）。したがって、凹溝の形状や溝の深さは上記するように、障害値限界線Ｋの手前でパッドが塑性変形領域に移行できるように調整されるのが好ましい。なお、上記特許文献２に開示するように、複数の縦長状の凹溝をほぼ等間隔で併設した態様であってもよいことは勿論のことである。   The shape of the groove formed on the vehicle body side surface of the lower limb impact absorbing pad is arbitrary, and the groove depth can be adjusted as appropriate. By forming a plurality of concave grooves in the surface of the pad on the vehicle body side, the surface of the vehicle body side is more easily crushed by impact load than the surface on the vehicle interior side due to the cross-sectional defect (plastic deformation). Easier to do). Therefore, it is preferable that the shape of the concave groove and the depth of the groove are adjusted so that the pad can move to the plastic deformation region before the obstacle value limit line K as described above. Of course, as disclosed in Patent Document 2, a plurality of vertically long concave grooves may be provided at substantially equal intervals.

パッドの他方面、すなわち車室内側の面は、平面や、全体形状によっては滑らかな曲面等に成形され、所定の厚みを有しているのがよい。この厚みはパッドに要求される剛性から決定でき、車体側の面の凹溝にてパッドが所望の塑性変形を呈した後は、パッド全体が潰れずに所定の圧縮強度を発現できるように設定される。   The other surface of the pad, that is, the surface on the vehicle interior side, is preferably formed into a flat surface or a smooth curved surface depending on the overall shape, and has a predetermined thickness. This thickness can be determined from the rigidity required of the pad, and is set so that after the pad exhibits the desired plastic deformation in the concave groove on the surface of the vehicle body, the entire pad can be expressed without compressing it. Is done.

本発明の下肢部衝撃吸収パッドは、車両構造の制約に応じて平面的に硬さを異ならせることに加えて、下肢部衝撃吸収パッドの車体側の面に任意形状の凹溝を設けておくことにより、極めて高い衝撃吸収性能を得ることができる。   The lower limb shock absorbing pad of the present invention is provided with a concave groove of an arbitrary shape on the vehicle body side surface of the lower limb shock absorbing pad, in addition to varying the hardness in a plane according to the constraints of the vehicle structure. As a result, extremely high shock absorbing performance can be obtained.

以上の説明から理解できるように、本発明の車両用下肢部衝撃吸収パッドによれば、発泡倍率の異なる予備発泡粒子を用いたり、材質の異なる予備発泡粒子を用いることにより、平面方向において硬さの異なる領域が形成されているパッドを得ることができ、したがって、車両構造による制約があっても、車両衝突時の衝撃を効果的に吸収することができる。   As can be understood from the above description, according to the lower limb impact absorbing pad for a vehicle of the present invention, by using pre-expanded particles having different expansion ratios or using pre-expanded particles having different materials, the hardness in the plane direction is increased. Thus, it is possible to obtain a pad in which different regions are formed. Therefore, even when there is a restriction due to the vehicle structure, it is possible to effectively absorb an impact at the time of a vehicle collision.

以下、図面を参照して本発明の実施の形態を説明する。図１は、車室内に本発明のパッドが設置された状況を説明した車両の縦断図を、図２は、図１の車室内の斜視図を、図３は、本発明のパッドの一実施形態を示した平面図であって、パッドの裏面（設置時に車体側となる面）から見た図を、図４は、図３のＩＶ−ＩＶ矢視図を、図５は、本発明のパッドの他の実施形態を示した平面図であって、パッドの裏面（設置時に車体側となる面）から見た図を、図６は、図５のＶＩ−ＶＩ矢視図をそれぞれ示している。図７は、本発明のパッドの有する荷重−歪み特性を説明したグラフであって、比較例の荷重−歪み特性と比較したグラフである。なお、本発明のパッド（下肢部衝撃吸収パッド）が図示する実施形態に限定されるものでないことは勿論のことであり、車種や車両ボディー等からの制約に応じて、その全体形状や大きさ、厚み等は適宜に変更され得る。   Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a vehicle illustrating a situation in which the pad of the present invention is installed in the vehicle interior, FIG. 2 is a perspective view of the vehicle interior of FIG. 1, and FIG. 3 is an embodiment of the pad of the present invention. It is the top view which showed the form, Comprising: The figure seen from the back surface (surface which becomes a vehicle body side at the time of installation) of a pad, FIG. 4 is the IV-IV arrow line view of FIG. 3, FIG. It is the top view which showed other embodiment of a pad, Comprising: The figure seen from the back surface (surface which becomes a vehicle body side at the time of installation) of a pad, FIG. 6 shows the VI-VI arrow line view of FIG. Yes. FIG. 7 is a graph illustrating the load-strain characteristics of the pad of the present invention, and is a graph compared with the load-strain characteristics of the comparative example. Needless to say, the pad (lower limb shock absorbing pad) of the present invention is not limited to the illustrated embodiment, and its overall shape and size are subject to restrictions from the vehicle type, vehicle body, and the like. The thickness and the like can be changed as appropriate.

図１は、本発明のパッド１が車両Ａの車室Ａ１内における車両ボディーの足元部（トーボード上）に設置されている状況を示している。パッド１は、運転席および助手席の下肢部の足元にそれぞれ設けられる。パッド１の車両前後方向の長さは、少なくとも踵Ｂ１〜つま先Ｂ２までが収容できる長さとなっており、このパッド１の端部は、車室内の下面に設置される水平パッド２の端部に接着ないしは嵌め込む態様で接続されている。なお、図示を省略するが、かかるパッド１および水平パッド２の上にはフロアカーペットが敷設され、車室内からはパッド１等が視認できないようになっている。   FIG. 1 shows a state in which the pad 1 of the present invention is installed at the foot portion (on the toe board) of the vehicle body in the compartment A1 of the vehicle A. The pads 1 are provided at the feet of the lower limbs of the driver seat and the passenger seat, respectively. The length of the pad 1 in the vehicle front-rear direction is a length that can accommodate at least the heel B1 to the toe B2, and the end of the pad 1 is connected to the end of the horizontal pad 2 installed on the lower surface of the vehicle interior. They are connected by bonding or fitting. In addition, although illustration is abbreviate | omitted, a floor carpet is laid on this pad 1 and the horizontal pad 2, and the pad 1 etc. cannot be visually recognized from a vehicle interior.

図２は、助手席側の足元にパッド１が設置された状況を示している。助手席側の足元部には、車両ボディーに搭載されているダクトの配管態様により、車両ボディーの車室内側形状は足元部の左右（図のＸ１方向とＸ２方向）で相違している。かかるボディー形状の相違と車室内スペースの制約により、パッド１の厚みは左右（Ｘ１側とＸ２側）で相違することとなる。   FIG. 2 shows a situation where the pad 1 is installed at the foot on the passenger seat side. In the foot portion on the passenger seat side, the vehicle body side shape of the vehicle body is different between the left and right sides (X1 direction and X2 direction in the figure) due to the piping mode of the duct mounted on the vehicle body. Due to the difference in the body shape and the space in the vehicle interior, the thickness of the pad 1 is different between the left and right sides (X1 side and X2 side).

図３は、図１，２で示すパッド１を裏側（車体側）から見た図であり、図４は、図３のＩＶ−ＩＶ矢視図である。パッド１には、車両の前後方向と同方向に延びる縦長状の凹溝１１（縦長状の凸部１２）が等間隔で併設するように設けられている。この凹溝１１，１１，…（凸部１２，１２，…）を設けることにより、車両衝突時に、この凸部１２，１２，…が潰れ易くなり（塑性変形し易くなり）、下肢部に障害を与えないような荷重−歪み特性を有するパッドとすることができる（後述）。   3 is a view of the pad 1 shown in FIGS. 1 and 2 as seen from the back side (vehicle body side), and FIG. 4 is a view taken along arrows IV-IV in FIG. The pad 1 is provided with vertically long concave grooves 11 (longitudinal convex portions 12) extending in the same direction as the vehicle front-rear direction so as to be provided at equal intervals. By providing the concave grooves 11, 11,... (Convex portions 12, 12,...), The convex portions 12, 12,. It can be set as the pad which has a load-strain characteristic which does not give (refer later).

また、パッド１は、図３，４に示すように、パッド１の厚みが左右（Ｘ１側とＸ２側）で異なる２つの領域（１Ａ領域と１Ｂ領域）から構成されている。これは上記する車両ボディーの形状や車室内のスペースの制約に応じて厚みを変化させたものである。パッド１は、左右の厚みがｔ１、ｔ２で異なるが、パッド全体として同等の衝撃吸収性能を有していることが必要であるため、パッドの左右でその硬さが調整されている。ここで、硬さの調整は、パッド１を構成する左右の予備発泡粒子の発泡倍率を変化させたり、材質の異なる予備発泡粒子を使用したり、さらには、材質の異なる予備発泡粒子の発泡倍率をパッドの部位ごとに変化させることによっておこなわれ、厚みが相対的に薄い１Ｂ領域は、１Ａ領域に比して硬くなるように調整される。   As shown in FIGS. 3 and 4, the pad 1 is composed of two regions (1A region and 1B region) in which the thickness of the pad 1 is different on the left and right sides (X1 side and X2 side). In this case, the thickness is changed in accordance with the restrictions on the shape of the vehicle body and the space in the passenger compartment. The pad 1 has a right and left thickness that differs between t1 and t2, but since the pad as a whole needs to have the same shock absorbing performance, its hardness is adjusted on the left and right sides of the pad. Here, the hardness is adjusted by changing the expansion ratio of the left and right pre-expanded particles constituting the pad 1, using pre-expanded particles of different materials, and further expanding ratio of the pre-expanded particles of different materials. Is changed for each part of the pad, and the 1B region having a relatively small thickness is adjusted to be harder than the 1A region.

左右の領域をともにスチレン改質ポリエチレン系樹脂の予備発泡粒子で成形する場合は、厚みが相対的に薄い左足側の領域（図４の１Ｂ）では、予備発泡粒子の発泡倍率を１５倍とし、右足側の領域（図４の１Ａ）では、予備発泡粒子の発泡倍率を３０倍とした原料から成形することができる。この場合、厚みｔ１、ｔ２はそれぞれ５０ｍｍと３０ｍｍ程度に成形することができる。   When both the left and right regions are molded with pre-expanded particles of styrene-modified polyethylene resin, the expansion ratio of the pre-expanded particles is set to 15 times in the region on the left foot side where the thickness is relatively thin (1B in FIG. 4). In the region on the right foot side (1A in FIG. 4), the preformed particles can be molded from a raw material with an expansion ratio of 30 times. In this case, the thicknesses t1 and t2 can be formed to about 50 mm and 30 mm, respectively.

パッド１の成形方法は、まず、予備発泡粒子の発泡倍率を予め異なる発泡倍率にて製造する。上記実施例では、例えば、１Ａ領域の予備発泡粒子を３０倍の発泡倍率で製造し、１Ｂ領域の予備発泡粒子を１５倍の発泡倍率にて製造し、この２種類の予備発泡粒子を成形型に充填してパッド１を一体成形することができる。この際、成形型のキャビティ内を仕切り部材で仕切っておき、仕切り部材の左右の空間に各予備発泡粒子を同時充填し、充填後にキャビティ内から仕切り部材を除去した後、蒸気加圧により発泡した粒子間を融着させるような方法でパッド１が成形できる。   First, the pad 1 is formed by pre-expanded particles having different expansion ratios in advance. In the above embodiment, for example, the pre-expanded particles in the 1A region are produced at an expansion ratio of 30 times, the pre-expanded particles in the 1B region are produced at an expansion ratio of 15 times, and these two types of pre-expanded particles are molded. The pad 1 can be formed integrally. At this time, the cavity of the mold is partitioned by a partition member, and each pre-expanded particle is simultaneously filled in the left and right spaces of the partition member, and after filling, the partition member is removed from the cavity and then foamed by steam pressurization. The pad 1 can be formed by a method in which the particles are fused.

図５は、車両の前後方向で分割された２つの領域（図５のＸ１とＸ２の領域）で、異なる硬さから構成されるパッド１０を示している。パッド１０も、車両の前後方向に延びる凹溝１１，１１，…が裏面に設けられている。図６は、図５の矢視図であるが、その断面視形状は略三角形となっており、車両ボディーの形状に応じたものである。図６のＸ１側（１０Ａ領域）がつま先側となり、Ｘ２側（１０Ｂ領域）が踵側となる。ここで、１０Ｂ領域に対して１０Ａ領域の硬さを相対的に硬くなるように調整しておくことが望ましい。車両が前突ないしは後突する場合において、衝突時には、つま先に乗員の体重以上の荷重が集中的に作用する一方で踵には荷重がほとんど作用しない。したがって、衝突時にパッドに作用する荷重に応じて部位ごとの硬さを変化させることにより、パッドが各部位ごとに所定の衝撃吸収性能を発揮することができる。   FIG. 5 shows a pad 10 having different hardness in two regions (regions X1 and X2 in FIG. 5) divided in the longitudinal direction of the vehicle. The pad 10 is also provided with concave grooves 11, 11,... Extending in the front-rear direction of the vehicle on the back surface. FIG. 6 is a view taken in the direction of the arrow in FIG. 5, and the cross-sectional view has a substantially triangular shape corresponding to the shape of the vehicle body. The X1 side (10A region) in FIG. 6 is the toe side, and the X2 side (10B region) is the heel side. Here, it is desirable to adjust the hardness of the 10A region to be relatively hard with respect to the 10B region. In the case of a frontal or rearward collision of the vehicle, a load exceeding the weight of the occupant acts on the toes at the time of the collision, while the load hardly acts on the heel. Therefore, by changing the hardness of each part according to the load acting on the pad at the time of collision, the pad can exhibit a predetermined shock absorbing performance for each part.

[実施例１]
図７は、本発明のパッドの一実施例の有する荷重−歪み特性を比較例とともにグラフに示したものである。この荷重−歪み特性は、ＪＩＳＺ０２３５の「包装用緩衝材料の動的圧縮試験方法」に準拠した衝撃緩和効果確認実験により得られたものである。この試験では、図３，４に示すパッドに似せたテストピースを用意し、踵治具をテストピースの表面より所定高さから落下させる。踵治具には加速度計を取り付けておき、テストピースには踵治具の落下による変位量を測定する変位計を取り付けておき、踵治具落下後の時間経過に伴うテストピースに加わる荷重（ｋＮ）とテストピースの変位（ｍｍ）を求めた。 [Example 1]
FIG. 7 is a graph showing the load-strain characteristics of one embodiment of the pad of the present invention together with a comparative example. This load-strain characteristic is obtained by an impact relaxation effect confirmation experiment based on “Dynamic compression test method for packaging buffer material” of JISZ0235. In this test, a test piece resembling the pad shown in FIGS. 3 and 4 is prepared, and the scissors jig is dropped from a predetermined height from the surface of the test piece. An accelerometer is attached to the scissors jig, a displacement meter is attached to the test piece to measure the amount of displacement due to the drop of the scissors jig, and the load applied to the test piece as time passes after the scissors are dropped ( kN) and the displacement (mm) of the test piece.

ここで、図３および図４に示すパッド１を模擬したテストピースにおける２つの領域はともにスチレン改質ポリエチレン系樹脂の予備発泡粒子から成形されている。１Ａ領域は３０倍の予備発泡粒子、１Ｂ領域は１５倍の予備発泡粒子によりそれぞれ成形されており、パッド全体の重量は２３０ｇとなる。この実施例のうち、１Ａ領域と１Ｂ領域の荷重−歪み特性はともに、グラフＸで示されている。なお、グラフＫ１、Ｋ２によって挟まれた範囲が下肢部に障害を与えない許容領域であり、例えば、（Ｆ１，Ｓ１）を（１.５ｋＮ，５％）、（Ｆ２，Ｓ２）を（２．５ｋＮ，７％）に設定することができる。 Here, the two regions in the test piece simulating the pad 1 shown in FIGS. 3 and 4 are both formed from pre-expanded particles of a styrene-modified polyethylene resin. The 1A region is formed by 30 times pre-expanded particles, and the 1B region is formed by 15 times pre-expanded particles. The total pad weight is 230 g. In this example, both the load-strain characteristics of the 1A region and the 1B region are shown by the graph X. Note that the range between the graphs K1 and K2 is an allowable region that does not damage the lower limbs. For example, (F 1 , S 1 ) is changed to (1.5 kN, 5%), (F 2 , S 2 ). Can be set to (2.5 kN, 7%).

[実施例２]
実施例２は、図５，６に示す形態からなり、例えば、パッド１０の前方領域１０Ａと後方領域１０Ｂが、それぞれ異材質であるスチレン改質ポリエチレン系樹脂の予備発泡粒子とポリスチレン系樹脂の予備発泡粒子から成形されている。ここで、スチレン改質ポリエチレン系樹脂の予備発泡粒子の発泡倍率を１５倍、ポリスチレン系樹脂の予備発泡粒子の発泡倍率を３０倍としてパッド１０が成形でき、パッド全体の重量は２２０ｇとなる。 [Example 2]
5 and 6, for example, the front region 10 </ b> A and the rear region 10 </ b> B of the pad 10 are pre-expanded particles of styrene-modified polyethylene resin and polystyrene resin, which are different materials, respectively. Molded from expanded particles. Here, the pad 10 can be molded by setting the expansion ratio of the pre-expanded particles of the styrene-modified polyethylene resin to 15 times and the expansion ratio of the pre-expanded particles of the polystyrene resin to 30 times, and the weight of the entire pad is 220 g.

[比較例１]
一方、比較例１として、１Ａ領域、１Ｂ領域がともに発泡倍率１５倍の予備発泡粒子によりパッドを成形する。この比較例は、厚みの相違に関係なく製品全体として発泡倍率が一定に成形される。この場合、衝撃吸収性能は満足するが、パッド全体の重量は３４０ｇと重くなってしまう。 [Comparative Example 1]
On the other hand, as Comparative Example 1, a pad is formed from pre-expanded particles in which the 1A region and 1B region both have an expansion ratio of 15 times. In this comparative example, the entire product is molded with a constant expansion ratio regardless of the difference in thickness. In this case, the shock absorbing performance is satisfied, but the weight of the entire pad is increased to 340 g.

[比較例２]
また、比較例２として、１Ａ領域、１Ｂ領域がともに発泡倍率３０倍の予備発泡粒子により成形する。この場合、厚みが薄い１Ｂ領域はグラフＸの特性となるが、厚みが厚い１Ａ領域はグラフＹの特性を有し、衝撃吸収性能を満足することができない。なお、パッドの重量は１７０ｇとなる。 [Comparative Example 2]
Further, as Comparative Example 2, the 1A region and the 1B region are both formed from pre-expanded particles having an expansion ratio of 30 times. In this case, the thin 1B region has the characteristics of the graph X, but the thick 1A region has the characteristics of the graph Y and cannot satisfy the shock absorbing performance. Note that the weight of the pad is 170 g.

本解析結果からも明らかなように、車両構造に応じて、衝撃吸収パッドの部位ごとに、同材質または異材質の樹脂の予備発泡粒子の発泡倍率を調整することにより、パッドが製品全体として所望の衝撃吸収性能を有することができ、車両衝突時に左右の下肢部へ障害を与える可能性を極めて少なくすることができる。また、厚みに対して硬さが硬過ぎることによって過重量となる領域を製品から排除することで、製品全体の軽量化を図ることが可能となる。   As is clear from the results of this analysis, the pad is desired for the entire product by adjusting the expansion ratio of the pre-expanded particles of the same or different resin for each part of the shock absorbing pad according to the vehicle structure. Thus, the possibility of causing damage to the left and right lower limbs at the time of a vehicle collision can be extremely reduced. Moreover, it becomes possible to reduce the weight of the entire product by excluding from the product an area that is excessively heavy due to the hardness being too thick.

以上、本発明の実施の形態を図面を用いて詳述してきたが、具体的な構成はこの実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲における設計変更等があっても、それらは本発明に含まれるものである。図示する実施形態は、パッドの前後、または左右の２つの異なる密度領域から構成されたものであるが、パッドの形状（厚みの変化）によっては、３つ以上の異なる密度領域から構成されるパッドであってもよい。   The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention. The illustrated embodiment is composed of two different density regions before and after the pad, or right and left, but depending on the shape of the pad (change in thickness), the pad is composed of three or more different density regions. It may be.

車室内に本発明のパッドが設置された状況を説明した車両の縦断図。The longitudinal cross-sectional view of the vehicle explaining the condition by which the pad of this invention was installed in the vehicle interior. 図１の車室内の斜視図。The perspective view of the vehicle interior of FIG. 本発明のパッドの一実施形態を示した平面図であって、パッドの裏面（設置時に車体側となる面）から見た図。It is the top view which showed one Embodiment of the pad of this invention, Comprising: The figure seen from the back surface (surface which becomes a vehicle body side at the time of installation) of a pad. 図３のＩＶ−ＩＶ矢視図。IV-IV arrow line view of FIG. 本発明のパッドの他の実施形態を示した平面図であって、パッドの裏面（設置時に車体側となる面）から見た図。It is the top view which showed other embodiment of the pad of this invention, Comprising: The figure seen from the back surface (surface which becomes a vehicle body side at the time of installation) of a pad. 図５のＶＩ−ＶＩ矢視図。VI-VI arrow line view of FIG. 本発明のパッドの有する荷重−歪み特性を説明したグラフであって、比較例の荷重−歪み特性と比較したグラフ。It is the graph explaining the load-strain characteristic which the pad of this invention has, Comprising: The graph compared with the load-strain characteristic of a comparative example. 従来のパッドと、理想的な特性を有するパッドの荷重−歪み特性を説明したグラフ。The graph explaining the load-strain characteristic of the pad which has the conventional pad and an ideal characteristic.

符号の説明Explanation of symbols

１，１０…パッド（下肢部衝撃吸収パッド）、１Ａ，１Ｂ…硬さの異なる領域、１０Ａ，１０Ｂ…硬さの異なる領域、１１…凹溝、２…水平パッド、Ａ…車両、Ａ１…車室、Ｂ１…踵、Ｂ２…つま先   DESCRIPTION OF SYMBOLS 1,10 ... Pad (lower limb part impact absorption pad), 1A, 1B ... Area | region where hardness differs 10A, 10B ... Area | region where hardness differs, 11 ... Concave groove, 2 ... Horizontal pad, A ... Vehicle, A1 ... Car Room, B1 ... 踵, B2 ... toe

Claims (4)

乗員の足が載置される車両用下肢部衝撃吸収パッドであって、
前記車両用下肢部衝撃吸収パッドは、平面方向において異種原料を用いて硬さの異なる領域が形成されている発泡成形品からなることを特徴とする車両用下肢部衝撃吸収パッド。 A vehicle lower limb shock absorbing pad on which an occupant's foot is placed,
The vehicle lower limb portion shock absorbing pad is made of a foam-molded product in which regions having different hardness are formed using different raw materials in a planar direction. 異種原料として発泡倍率の異なる予備発泡粒子を用いることを特徴とする請求項１に記載の車両用下肢部衝撃吸収パッド。   The vehicular lower limb impact absorption pad according to claim 1, wherein pre-expanded particles having different expansion ratios are used as different raw materials. 異種原料として材質の異なる予備発泡粒子を用いることを特徴とする請求項１または２に記載の車両用下肢部衝撃吸収パッド。   3. The vehicle leg impact absorbing pad according to claim 1, wherein pre-expanded particles made of different materials are used as different raw materials. 車両への設置時に車体側となる面には、複数の凹溝が形成されていることを特徴とする請求項１〜３のいずれかに記載の車両用下肢部衝撃吸収パッド。   The lower limb impact absorbing pad for a vehicle according to any one of claims 1 to 3, wherein a plurality of concave grooves are formed on a surface on the vehicle body side when installed in a vehicle.
JP2005275926A 2005-09-22 2005-09-22 Lower limb shock absorption pad for vehicle Active JP4963818B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005275926A JP4963818B2 (en) 2005-09-22 2005-09-22 Lower limb shock absorption pad for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005275926A JP4963818B2 (en) 2005-09-22 2005-09-22 Lower limb shock absorption pad for vehicle

Publications (2)

Publication Number Publication Date
JP2007083902A true JP2007083902A (en) 2007-04-05
JP4963818B2 JP4963818B2 (en) 2012-06-27

Family

ID=37971343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005275926A Active JP4963818B2 (en) 2005-09-22 2005-09-22 Lower limb shock absorption pad for vehicle

Country Status (1)

Country Link
JP (1) JP4963818B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009149836A (en) * 2007-11-29 2009-07-09 Kaneka Corp Expansion molding product and shock-absorbing body comprising the same
WO2012176321A1 (en) * 2011-06-23 2012-12-27 トヨタ自動車株式会社 Tibia pad and tibia pad installation structure
WO2012176320A1 (en) * 2011-06-23 2012-12-27 トヨタ自動車株式会社 Tibia pad and tibia pad installation structure
US8580863B2 (en) 2007-03-23 2013-11-12 Kaneka Corporation Soft foam, molded product, and shock absorber comprising the molded product
WO2014174685A1 (en) * 2013-04-26 2014-10-30 トヨタ自動車株式会社 Right-foot protection structure
JP2015025094A (en) * 2013-07-29 2015-02-05 積水化成品工業株式会社 Form molding
JP2015113010A (en) * 2013-12-12 2015-06-22 ダイハツ工業株式会社 Floor front part structure of automobile
JP2016172483A (en) * 2015-03-17 2016-09-29 積水化成品工業株式会社 Vehicle floor spacer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192510A (en) * 1981-05-25 1982-11-26 Inoue Mtp Kk Production of cushion body
JPS62289485A (en) * 1985-12-31 1987-12-16 東京シ−ト株式会社 Cushion material for double seat and manufacture thereof
JPH10217820A (en) * 1997-01-31 1998-08-18 Japan Vilene Co Ltd Floor mat and manufacture thereof
JPH10297345A (en) * 1997-04-28 1998-11-10 Honda Motor Co Ltd Footrest for automobile
JP2002331895A (en) * 2001-05-10 2002-11-19 Toyota Motor Corp Car body structure of automobile
JP2003118460A (en) * 2001-10-15 2003-04-23 Hitachi Chem Co Ltd Automobile floor spacer
JP2003127796A (en) * 2001-10-26 2003-05-08 Hitachi Chem Co Ltd Shock absorbing floor spacer for automobile
JP2004306791A (en) * 2003-04-07 2004-11-04 Sekisui Plastics Co Ltd Leg part impact absorption pad for vehicle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192510A (en) * 1981-05-25 1982-11-26 Inoue Mtp Kk Production of cushion body
JPS62289485A (en) * 1985-12-31 1987-12-16 東京シ−ト株式会社 Cushion material for double seat and manufacture thereof
JPH10217820A (en) * 1997-01-31 1998-08-18 Japan Vilene Co Ltd Floor mat and manufacture thereof
JPH10297345A (en) * 1997-04-28 1998-11-10 Honda Motor Co Ltd Footrest for automobile
JP2002331895A (en) * 2001-05-10 2002-11-19 Toyota Motor Corp Car body structure of automobile
JP2003118460A (en) * 2001-10-15 2003-04-23 Hitachi Chem Co Ltd Automobile floor spacer
JP2003127796A (en) * 2001-10-26 2003-05-08 Hitachi Chem Co Ltd Shock absorbing floor spacer for automobile
JP2004306791A (en) * 2003-04-07 2004-11-04 Sekisui Plastics Co Ltd Leg part impact absorption pad for vehicle

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8580863B2 (en) 2007-03-23 2013-11-12 Kaneka Corporation Soft foam, molded product, and shock absorber comprising the molded product
JP2009149836A (en) * 2007-11-29 2009-07-09 Kaneka Corp Expansion molding product and shock-absorbing body comprising the same
WO2012176321A1 (en) * 2011-06-23 2012-12-27 トヨタ自動車株式会社 Tibia pad and tibia pad installation structure
WO2012176320A1 (en) * 2011-06-23 2012-12-27 トヨタ自動車株式会社 Tibia pad and tibia pad installation structure
CN103648851A (en) * 2011-06-23 2014-03-19 丰田自动车株式会社 Tibia pad and tibia pad installation structure
US9126636B2 (en) 2011-06-23 2015-09-08 Toyota Jidosha Kabushiki Kaisha Tibia pad and tibia pad installation structure
WO2014174685A1 (en) * 2013-04-26 2014-10-30 トヨタ自動車株式会社 Right-foot protection structure
JP5804212B2 (en) * 2013-04-26 2015-11-04 トヨタ自動車株式会社 Right foot protection structure
US9539973B2 (en) 2013-04-26 2017-01-10 Toyota Jidosha Kabushiki Kaisha Right foot protecting structure
JP2015025094A (en) * 2013-07-29 2015-02-05 積水化成品工業株式会社 Form molding
JP2015113010A (en) * 2013-12-12 2015-06-22 ダイハツ工業株式会社 Floor front part structure of automobile
JP2016172483A (en) * 2015-03-17 2016-09-29 積水化成品工業株式会社 Vehicle floor spacer

Also Published As

Publication number Publication date
JP4963818B2 (en) 2012-06-27

Similar Documents

Publication Publication Date Title
JP4963818B2 (en) Lower limb shock absorption pad for vehicle
JP4302712B2 (en) Lower limb shock absorbing pad and vehicle floor spacer
JP4526236B2 (en) Lower limb shock absorption pad for vehicle
KR100614287B1 (en) Shock absorbing pad for vehicle
JP2003127796A (en) Shock absorbing floor spacer for automobile
EP2014513B1 (en) Floor spacer for vehicle and vehicle interior structure
JP4883973B2 (en) Vehicle floor spacer
JP4059655B2 (en) Automotive floor spacer and manufacturing method thereof
JP4772067B2 (en) Lower limb shock absorption pad for vehicle
JP4708441B2 (en) Vehicle structure with a lower limb shock absorbing pad for a vehicle
JP5073302B2 (en) Lower limb shock absorption pad
JP6352842B2 (en) Vehicle floor spacer
JP5140063B2 (en) Vehicle floor spacer
JP2007083904A (en) Vehicle floor spacer
JP4021928B2 (en) Shock absorber for automobile floor spacer
JP4416567B2 (en) Tibia pad
JP4576311B2 (en) Shock absorber for vehicles
JP2010120471A (en) Shock absorbing structure
JP4698198B2 (en) Bumper for vehicle and cushioning material thereof
JP3173912U (en) Shock absorbing member
JP2009040294A (en) Impact absorption member
JP6236294B2 (en) Floor spacer
JP2007106416A (en) Impact absorbing floor spacer for automobile
JP2007161248A (en) Shock absorbing floor spacer for vehicle

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080508

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110107

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110118

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110316

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110726

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110915

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120306

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120327

R150 Certificate of patent or registration of utility model

Ref document number: 4963818

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150406

Year of fee payment: 3