JP2003127796A - Shock absorbing floor spacer for automobile - Google Patents
Shock absorbing floor spacer for automobileInfo
- Publication number
- JP2003127796A JP2003127796A JP2001328910A JP2001328910A JP2003127796A JP 2003127796 A JP2003127796 A JP 2003127796A JP 2001328910 A JP2001328910 A JP 2001328910A JP 2001328910 A JP2001328910 A JP 2001328910A JP 2003127796 A JP2003127796 A JP 2003127796A
- Authority
- JP
- Japan
- Prior art keywords
- floor
- spacer
- automobile
- honeycomb
- floor spacer
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車の全席の床
面又は床面と乗員足元周辺に敷設されるフロアスペーサ
に関する。更に詳しくは、床面の平坦性の確保、踏み込
みへたりの低減及び車内外で発生する衝撃に対する乗員
の保護を目的とした硬質発泡プラスチック製の自動車用
フロアスペーサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor spacer for all seats of an automobile or a floor spacer laid around the floor and the feet of an occupant. More specifically, the present invention relates to a floor spacer made of hard foam plastic for an automobile, for the purpose of ensuring the flatness of the floor surface, reducing the amount of depression, and protecting the occupant against the impact generated inside and outside the vehicle.
【０００２】[0002]
【従来の技術】近年、自動車の居住性向上とプラットホ
ームの共通化に対応できる部材として発泡ポリスチレン
等の硬質発泡プラスチック製フロアスペーサが採用され
るケースが増えているが、これはこれらの硬質発泡プラ
スチックが、単位体積あたりの重量が非常に軽量であ
り、金型成形が可能で付形性に優れ、更に単位体積あた
りのコストが安価である等の特長をもつことによる。一
方、自動車内外で発生する衝撃に対する衝撃吸収材、例
えばドア内部に配置されるエネルギ吸収材には、衝撃を
受けて変形する歪み量が大きくなっても応力上昇が少な
い特長を持つ素材として、発泡ウレタンが多く採用され
ている。また、自動車の衝突安全性の更なる向上を目的
に、車体構造改善や衝突時に乗員に負荷を与える部材へ
衝撃吸収性能を付加することが求められている。2. Description of the Related Art In recent years, hard foamed plastic floor spacers such as expanded polystyrene have been increasingly used as a member capable of improving the habitability of automobiles and sharing a common platform. However, this is because the weight per unit volume is extremely light, moldability and moldability are excellent, and the cost per unit volume is low. On the other hand, shock absorbers for shocks generated inside and outside automobiles, such as energy absorbers placed inside doors, have the characteristic of being less likely to increase in stress even if the amount of strain that deforms under impact increases Many urethanes are used. Further, for the purpose of further improving the collision safety of an automobile, it is required to add a shock absorbing performance to a member which gives a load to an occupant at the time of a collision, by improving a vehicle body structure.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、フロア
スペーサに関しては、居住性と安全向上のための技術は
完成されたものでなく、発泡ポリスチレン成形品では、
踏み抜き荷重に対するへたりの問題や、衝撃圧縮に対す
る応力上昇が大きいことや、発泡ウレタンでは、ウレタ
ンが熱硬化性プラスチックであることからリサイクル出
来ないことや、吸水率が高いことによる特性変化などの
課題が残っていた。However, regarding the floor spacer, the technology for improving the habitability and safety is not completed, and in the expanded polystyrene molded product,
Problems such as settling against punching load, large stress rise due to impact compression, urethane foam that cannot be recycled because it is a thermosetting plastic, and characteristic changes due to high water absorption Was left.
【０００４】[0004]
【課題を解決するための手段】本発明は、自動車の乗員
座席の足元を形成する床面又は床面と足元前方に敷設さ
れる硬質発泡プラスチック製で室内側は平面を形成し、
床面側はハニカム構造、スリット構造又は突起構造の硬
質発泡プラスチック成形品であって、敷設した際の床面
への接触面積が、１０％以上６０％以下である衝撃吸収
性自動車用フロアスペーサに関する。硬質発泡プラスチ
ックが、発泡性熱可塑性樹脂粒子を所定の密度に一次発
泡した後、金型に充填し、スチーム等の加熱により成形
され、密度が３０ｋｇ／ｍ3以上２００ｋｇ／ｍ3 以下
の発泡成形品であることが好ましい。フロアスペーサの
肉厚に対するハニカム及びスリットのリブ又は突起の幅
が２０％以下、室内側を形成する面の肉厚が５０％以下
であることが好ましい。フロアスペーサの床面側を形成
する、ハニカム及びスリットのリブ、もしくは突起の形
状が、スペーサの肉厚方向に対して、連続的又は段階的
に変化することが好ましい。According to the present invention, a floor surface forming a foot of a passenger seat of an automobile, or a hard foamed plastic laid in front of the floor and the foot is a flat surface on the indoor side,
The floor surface side is a hard foamed plastic molded product having a honeycomb structure, a slit structure or a protrusion structure, and a contact area with the floor surface when laid is 10% or more and 60% or less . Hard foamed plastic is first foamed with expandable thermoplastic resin particles to a predetermined density, then filled in a mold and molded by heating with steam etc., and foam molding with a density of 30 kg / m 3 or more and 200 kg / m 3 or less It is preferably a product. It is preferable that the width of the ribs or protrusions of the honeycomb and the slit is 20% or less and the thickness of the surface forming the indoor side is 50% or less with respect to the wall thickness of the floor spacer. It is preferable that the shape of ribs or protrusions of the honeycomb and the slits forming the floor surface side of the floor spacer continuously or stepwise change in the thickness direction of the spacer.
【０００５】[0005]
【発明の実施の形態】本発明に使用される硬質発泡プラ
スチックの材質は、リサイクルが可能な無架橋の熱可塑
性樹脂とされ、発泡性樹脂粒子を所定の密度に一次発泡
した後、金型に充填し、スチーム等の加熱により成形さ
れる発泡成形品が好ましい。このような硬質発泡プラス
チックとしては、発泡ポリエチレン、発泡ポリプロピレ
ン等の発泡ポリオレフィン等があるが、経済性と優れた
成形品物性から発泡ポリスチレン系プラスチックが好ま
しい。発泡ポリスチレン系プラスチックには、耐薬品性
を向上させたスチレン／アクリロニトリル樹脂、耐熱性
を向上させたスチレン／アクリロニトリル／α−メチル
スチレン樹脂等の発泡体等がある。BEST MODE FOR CARRYING OUT THE INVENTION The material of the hard foamed plastic used in the present invention is a recyclable non-crosslinked thermoplastic resin, which is first foamed to a predetermined density and then molded into a mold. A foamed molded product which is filled and molded by heating with steam or the like is preferable. Examples of such rigid foamed plastic include foamed polyolefin such as foamed polyethylene and polypropylene, and foamed polystyrene plastic is preferable from the viewpoint of economy and excellent physical properties of molded articles. Expanded polystyrene plastics include foams of styrene / acrylonitrile resin with improved chemical resistance and styrene / acrylonitrile / α-methylstyrene resin with improved heat resistance.
【０００６】本発明になるフロアスペーサの床面との接
触面積は、必要とされる圧縮強度の値と硬質発泡プラス
チックの密度が決まれば、図１に示すような硬質発泡プ
ラスチックの圧縮応力と圧縮ひずみの関係を示す図より
求めた圧縮応力の値から簡単な計算により決定できる。
例えば、必要とされる１０％圧縮強度が０．１５ＭＰａ
で硬質発泡プラスチックの密度を３３ｋｇ／ｍ3 とす
る。この場合、密度３３ｋｇ／ｍ3 における１０％圧縮
強度の値は、図１より０．３０ＭＰａであることから、
求める接触面積は、０．１５／０．３０×１００＝５０
％となる。本発明になるフロアスペーサの接触面積はこ
のように決定される。実際に敷設した際の床面への接触
面積は衝撃吸収性能と軽量性を両立させるために１０％
以上６０％以下とされる。接触面積が１０％未満では要
求される硬質発泡プラスチックの密度が高く、衝撃吸収
性能は満足できても軽量性を満足できなくなる可能性が
あり、又６０％を越えると軽量性は満足できるが圧縮強
度が低く、所望の衝撃吸収性能が発揮されなくなる可能
性がある。The contact area of the floor spacer according to the present invention with the floor surface is determined by the required compressive strength and the density of the hard foam plastic, and the compressive stress and compression of the hard foam plastic as shown in FIG. It can be determined by a simple calculation from the value of the compressive stress obtained from the diagram showing the relationship of strain.
For example, the required 10% compressive strength is 0.15 MPa
Then, the density of the rigid foam plastic is set to 33 kg / m 3 . In this case, since the value of 10% compressive strength at a density of 33 kg / m 3 is 0.30 MPa from FIG. 1,
The required contact area is 0.15 / 0.30 × 100 = 50
%. The contact area of the floor spacer according to the present invention is thus determined. The contact area with the floor when actually laid is 10% in order to achieve both shock absorption performance and light weight.
It is set to 60% or less. If the contact area is less than 10%, the density of the required hard foamed plastic is high, and the impact absorption performance may be satisfied, but the lightness may not be satisfied, and if it exceeds 60%, the lightness may be satisfied but compression The strength is low, and the desired shock absorbing performance may not be exhibited.
【０００７】本発明に用いられる硬質発泡プラスチック
の密度は、フロアスペーサにかかる荷重を求め、これに
耐え得る圧縮強度を示す密度を、例えば図１に示すよう
な圧縮応力と圧縮歪みの関係を示す図から求めることに
より、容易に決定される。例えば、靴のかかと（面積５
×３＝１５ｃｍ2 ）に、荷重３０ｋｇがかかった場合、
フロアスペーサに必要な圧縮強度は、３０／１５＝２ｋ
ｇ／ｃｍ2 ≒０．２ＭＰａとなる。本発明によるフロア
スペーサの床面側はハニカム構造、スリット構造又は突
起構造であることから、必要な圧縮強度は、床面に対す
る接触面積の比率で除したものとなる。例えば、接触面
積が６０％であり、荷重が前述のように０．２ＭＰａで
ある場合、フロアスペーサに必要な強度は、０．２ＭＰ
ａ／０．６＝０．３３ＭＰａとなる。The density of the rigid foamed plastic used in the present invention is the density showing the compressive strength that can withstand the load applied to the floor spacer, for example, the relationship between the compressive stress and the compressive strain as shown in FIG. It can be easily determined by obtaining it from the figure. For example, the heel of a shoe (area 5
When a load of 30 kg is applied to × 3 = 15 cm 2 ),
Compressive strength required for floor spacers is 30/15 = 2k
g / cm 2 ≈0.2 MPa. Since the floor surface side of the floor spacer according to the present invention has a honeycomb structure, a slit structure or a protrusion structure, the necessary compressive strength is divided by the ratio of the contact area to the floor surface. For example, when the contact area is 60% and the load is 0.2 MPa as described above, the strength required for the floor spacer is 0.2 MPa.
It becomes a / 0.6 = 0.33 MPa.
【０００８】図１に、本発明で用いられる硬質発泡プラ
スチックの一例であるスチレン／アクリロニトリル樹脂
発泡体（日立化成工業（株）製 ハイビーズＧＲ）の静
的圧縮試験における圧縮応力と圧縮歪みとの関係を示し
た。図１から圧縮歪みが１０％のとき、圧縮圧力が０．
３ＭＰａ以上となる密度は３３ｋｇ／ｍ3 以上であるこ
とが示される。本発明では、想定される耐圧荷重とフロ
アスペーサの構造によって、必要な強度と密度が異なる
が硬質発泡プラスチック素材ベースでの密度は衝撃吸収
性能と耐踏み込みへたり性の両立及び軽量性から３０ｋ
ｇ／ｍ3 以上２００ｋｇ／ｍ3以下が好ましい。FIG. 1 shows the relationship between the compressive stress and the compressive strain in a static compression test of a styrene / acrylonitrile resin foam (HIBEAD GR made by Hitachi Chemical Co., Ltd.) which is an example of the rigid foamed plastic used in the present invention. showed that. From FIG. 1, when the compression strain is 10%, the compression pressure is 0.
It is shown that the density of 3 MPa or more is 33 kg / m 3 or more. In the present invention, the required strength and density differ depending on the assumed pressure-resistant load and the structure of the floor spacer, but the density of the hard foam plastic material base is 30 k from the viewpoint of both shock absorption performance and depression resistance and lightness.
It is preferably g / m 3 or more and 200 kg / m 3 or less.
【０００９】本発明になるフロアスペーサの床面側の形
状は、図２に示したようなハニカム構造、図３に示した
スリット構造又は図４に示した突起構造が単独又は組み
合わされて機能を果たす。本発明になるフロアスペーサ
の肉厚に対するハニカム及びスリットのリブ又は突起の
幅は２０％以下が好ましい。衝撃が加わると、例えば図
７に示したように衝撃吸収部は変形するがこのとき硬質
発泡プラスチックのハニカム、スリット又は突起の幅が
２０％以下であれば圧縮応力が低くなり、衝撃が加わっ
た際に変形しやすく、十分な衝撃吸収性能を発揮でき
る。また、本発明においてはフロアスペーサの肉厚に対
する室内側を形成する面の肉厚は５０％以下が好まし
い。本発明のフロアスペーサは衝撃が加わった際に、ハ
ニカム、スリット又は突起が図７のように変形すること
で高い衝撃吸収性能を発揮することから、室内側を形成
する面の肉厚が５０％以下であれば、変形する部位が厚
く、衝撃吸収性能が高くなる。本発明では、フロアスペ
ーサの床面側を形成するハニカム及びスリットのリブ又
は突起の形状をスペーサの肉厚方向に対して、連続的又
は段階的に変化させ、物理的に圧縮応力を変化させるこ
とでより高い衝撃吸収性能を発揮させることもできる。The floor spacer according to the present invention has a shape on the floor surface side, which has a honeycomb structure as shown in FIG. 2, a slit structure shown in FIG. 3, or a protrusion structure shown in FIG. Fulfill The width of the ribs or protrusions of the honeycomb and the slits with respect to the wall thickness of the floor spacer according to the present invention is preferably 20% or less. When an impact is applied, for example, the impact absorbing portion is deformed as shown in FIG. 7. At this time, if the width of the honeycomb, slits or protrusions of the hard foam plastic is 20% or less, the compressive stress becomes low and the impact is applied. It is easily deformed and can exhibit sufficient shock absorbing performance. Further, in the present invention, the thickness of the surface forming the indoor side is preferably 50% or less of the thickness of the floor spacer. The floor spacer of the present invention exhibits a high impact absorption performance by deforming the honeycomb, the slits, or the protrusions as shown in FIG. 7 when an impact is applied. Therefore, the thickness of the surface forming the indoor side is 50%. If it is below, the deformed portion is thick and the shock absorbing performance is high. In the present invention, the shape of the honeycomb or slit ribs or protrusions forming the floor surface side of the floor spacer is continuously or stepwise changed in the thickness direction of the spacer to physically change the compressive stress. It is also possible to exert higher impact absorption performance with.
【００１０】本発明になるフロアスペーサは、底部から
加わる衝撃からのみ乗員を守ることを目的とする場合、
フロアスペーサの外観は図２〜４に示したような平板状
となるが、前部や側部から加わる衝撃から乗員を守るこ
とを目的とする場合は、図５（ａ）、図５（ｂ）に示し
たように前面、側面に発泡プラスチックがせり出した構
造としてもよい。図においてＡは室内側、Ｂは床面側を
示す。ハニカム、スリット及び突起物の形状には特に制
限はない。通常ハニカム構造は、正６角形の蜂の巣状を
意味するが、本発明においてはｎが３以上のｎ角形、円
形又は楕円形でもよい。When the floor spacer according to the present invention is intended to protect an occupant only from an impact applied from the bottom,
The appearance of the floor spacer is a flat plate shape as shown in FIGS. 2 to 4, but if the purpose is to protect the occupant from an impact applied from the front or the side, the floor spacers shown in FIGS. ), The front and side surfaces may be made of foamed plastic. In the figure, A indicates the indoor side and B indicates the floor side. The shapes of the honeycomb, the slits, and the protrusions are not particularly limited. Usually, the honeycomb structure means a regular hexagonal honeycomb shape, but in the present invention, an n-gonal shape in which n is 3 or more, a circular shape or an elliptic shape may be used.
【００１１】本発明になるフロアスペーサは、硬質発泡
プラスチック自体が有する緩衝性とハニカム等の構造に
よる効果が相乗的に働き、高い衝撃吸収性能を発揮す
る。図６に本発明になるハニカム構造を有する硬質発泡
プラスチックと、同一の動的圧縮荷重を示す密度を有す
るハニカム構造を有しない硬質発泡プラスチックブロッ
クの動的圧縮歪みと圧縮応力の関係を示す。後者の場
合、動的圧縮歪みの増加に伴い、圧縮応力も漸増して衝
撃吸収性能が低下するに対し、本発明になるハニカム構
造を有するものは、０．６ＭＰａを示す歪み域が１５％
〜６０％の間でほぼ一定であり、高い衝撃吸収性能を有
し、乗員に対するダメージを軽減できるものである。In the floor spacer according to the present invention, the shock absorbing property of the hard foam plastic itself and the effect of the structure of the honeycomb and the like act synergistically to exert a high impact absorbing performance. FIG. 6 shows the relationship between the dynamic compressive strain and the compressive stress of the hard foam plastic having the honeycomb structure according to the present invention and the hard foam plastic block having the same dynamic compression load and having no honeycomb structure. In the latter case, as the dynamic compressive strain increases, the compressive stress also gradually increases and the impact absorption performance decreases, whereas the honeycomb structure of the present invention has a strain range of 0.6 MPa of 15%.
It is almost constant between 60% and 60%, has a high impact absorption performance, and can reduce damage to an occupant.
【００１２】[0012]
【実施例】以下に実施例を示し、更に詳細に本発明を説
明するが、これらに限定されるものではない。
（実施例の仕様）図８に示す外観を有するフロアスペー
サを、「日立化成工業（株）製 発泡性スチレン／アク
リロニトリル樹脂、ハイビーズＧＲ」を素材とした、密
度６７ｋｇ／ｍ3 の硬質発泡プラスチックで作製した。
フロアスペーサ裏面のハニカム構造は図２と同様とし
た。ハニカムの構造の寸法は、フロアスペーサの肉厚５
０ｍｍ、表皮肉厚１０ｍｍ、ハニカム高さ４０ｍｍ、ハ
ニカムのリブ幅５ｍｍであり、敷設される床面積に対す
る床面とハニカムのリブの接触面積は、３６％である。
フロアスペーサの肉厚（５０ｍｍ）に対する、ハニカム
のリブの幅は１０％、フロアスペーサの肉厚（５０ｍ
ｍ）に対する、室内側を形成する面の肉厚は２０％、ハ
ニカム構造による空隙率は５１．２％である。EXAMPLES The present invention will be described in more detail with reference to the following examples, which should not be construed as limiting the invention. (Specifications of Examples) The floor spacer having the appearance shown in FIG. 8 is made of a hard foamed plastic having a density of 67 kg / m 3 and made of “Hitachi Chemical Co., Ltd. expandable styrene / acrylonitrile resin, high beads GR”. It was made.
The honeycomb structure on the back surface of the floor spacer was the same as in FIG. The size of the honeycomb structure depends on the thickness of the floor spacer.
The surface area is 0 mm, the skin thickness is 10 mm, the honeycomb height is 40 mm, and the honeycomb rib width is 5 mm. The contact area between the floor surface and the honeycomb rib is 36% of the floor area to be laid.
The width of the honeycomb rib is 10% of the thickness of the floor spacer (50 mm), and the thickness of the floor spacer (50 m)
With respect to m), the wall thickness of the surface forming the indoor side is 20%, and the porosity due to the honeycomb structure is 51.2%.
【００１３】（実施例の特性）本発明の効果を明確にす
るため、フロアスペーサとして同一重量となるハニカム
のない、同一素材で密度３３ｋｇ／ｍ3 の発泡プラスチ
ック製フロアスペーサと比較した。
（耐踏み込みへたり）直径１２ｍｍのステンレス丸棒に
３０ｋｇのおもりをかけて、１０秒づつ１０回圧縮した
ところ、本発明品は、歪みが１％以下であったのに対
し、比較品は８％沈んだ。図９にその結果を示した。
（衝撃吸収性能）ＪＩＳ−Ｚ０２３５に準拠して、成形
品に底面積が７０ｃｍ2 の４．５ｋｇのおもりを、２．
５ｍの高さから自由落下させて、そのときの衝撃値を測
定したところ、本発明品は、９０Ｇであるのに対して、
比較品は、１８０Ｇとなった。(Characteristics of Examples) In order to clarify the effect of the present invention, the floor spacer was compared with a floor spacer made of foamed plastic having the same material and a density of 33 kg / m 3 which does not have the same weight of honeycomb. When the weight of 30 kg was applied to a stainless steel rod having a diameter of 12 mm and compressed 10 times for 10 seconds each, the strain of the present invention was 1% or less, while the strain of the comparative product was 8%. % Sank. The results are shown in FIG. (Shock absorbing capacity) in compliance with JIS-Z0235, the weight of 4.5kg bottom area of 70cm 2 to moldings, 2.
When it was dropped from a height of 5 m and the impact value at that time was measured, the product of the present invention was 90 G.
The comparison product was 180G.
【００１４】[0014]
【発明の効果】本発明になる自動車用フロアスペーサ
は、より軽量な部材で、居住性と衝撃安全性を向上でき
るばかりでなく、リサイクルに適している。INDUSTRIAL APPLICABILITY The floor spacer for an automobile according to the present invention is a lighter member and not only can improve habitability and impact safety, but is also suitable for recycling.
【図１】日立化成工業（株）製「ハイビーズＧＲ」成形
品の圧縮歪みと圧縮応力の関係を示す図。FIG. 1 is a diagram showing the relationship between compressive strain and compressive stress of a “HIBEAD GR” molded product manufactured by Hitachi Chemical Co., Ltd.
【図２】ハニカム構造の例を示す図。FIG. 2 is a diagram showing an example of a honeycomb structure.
【図３】スリット構造の例を示す図。FIG. 3 is a diagram showing an example of a slit structure.
【図４】突起構造の例を示す図。FIG. 4 is a diagram showing an example of a protrusion structure.
【図５】（ａ）は前部からの衝撃に対して乗員保護を目
的としたフロアスペーサの例を示す図。（ｂ）は前部及
び側部からの衝撃に対して乗員保護を目的としたフロア
スペーサの例を示す図。FIG. 5A is a diagram showing an example of a floor spacer for the purpose of protecting an occupant against an impact from the front. (B) is a figure which shows the example of the floor spacer aiming at occupant protection with respect to the impact from a front part and a side part.
【図６】本発明品の衝撃吸収特性測定結果を示す図。FIG. 6 is a diagram showing the results of measurement of impact absorption characteristics of the product of the present invention.
【図７】衝撃試験後の衝撃吸収材（ハニカム構造）を示
す図。FIG. 7 is a diagram showing a shock absorbing material (honeycomb structure) after a shock test.
【図８】本発明品の衝撃吸収性フロアスペーサ実施例を
示す図。FIG. 8 is a diagram showing an embodiment of a shock absorbing floor spacer of the product of the present invention.
【図９】本発明品の踏み込みへたり性試験結果を示す
図。FIG. 9 is a view showing the result of a depression-slip test of the product of the present invention.
Ａ 室内側 Ｂ 床面側 A indoor side B floor side
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小谷 正弘 千葉県市原市五井南海岸14番地 日立化成 工業株式会社五井事業所内 (72)発明者 宮本 誠 埼玉県行田市藤原町１丁目20番１号 寿屋 フロンテ株式会社内 Ｆターム(参考） 3D023 BB14 BB22 BD04 BE03 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Masahiro Otani Hitachi Chemical Co., Ltd. 14 Goi Minami Coast, Ichihara City, Chiba Prefecture Koi Industry Co., Ltd. (72) Inventor Makoto Miyamoto 1-20-1, Fujiwara-cho, Gyoda-shi, Saitama Kotobukiya Fronte Co., Ltd. F term (reference) 3D023 BB14 BB22 BD04 BE03
Claims (4)
又は床面と足元前方に敷設される硬質発泡プラスチック
製で室内側は平面を形成し、床面側はハニカム構造、ス
リット構造又は突起構造の硬質発泡プラスチック成形品
であって、敷設した際の床面への接触面積が、１０％以
上６０％以下である衝撃吸収性自動車用フロアスペー
サ。1. A floor made of hard foamed plastic laid in front of or below the floor or the floor forming the foot of a passenger seat of an automobile, the inside of which forms a flat surface, and the floor of the floor has a honeycomb structure, a slit structure or protrusions. A shock-absorbing automobile floor spacer, which is a hard foam plastic molded product having a structure, and has a contact area with a floor surface of 10% or more and 60% or less when laid.
性樹脂粒子を所定の密度に一次発泡した後、金型に充填
し、スチーム等の加熱により成形され、密度が３０ｋｇ
／ｍ3 以上２００ｋｇ／ｍ3 以下の発泡成形品である請
求項１に記載の衝撃吸収性自動車用フロアスペーサ。2. A rigid foamed plastic is first foamed with expandable thermoplastic resin particles to a predetermined density, then filled in a mold and molded by heating with steam to have a density of 30 kg.
Shock absorption floor spacer for a vehicle according to claim 1 is / m 3 or more 200 kg / m 3 or less of the foam molded article.
及びスリットのリブ又は突起の幅が２０％以下、室内側
を形成する面の肉厚が５０％以下である請求項１又は２
に記載の衝撃吸収性自動車用フロアスペーサ。3. The thickness of the ribs or protrusions of the honeycomb and the slit is 20% or less of the thickness of the floor spacer, and the wall thickness of the surface forming the indoor side is 50% or less.
Impact-absorbing automotive floor spacer according to item 1.
ニカム及びスリットのリブ、もしくは突起の形状が、ス
ペーサの肉厚方向に対して、連続的又は段階的に変化す
る請求項１〜３のいずれかに記載の衝撃吸収性自動車用
フロアスペーサ。4. The shape of ribs or protrusions of the honeycomb and the slits forming the floor surface side of the floor spacer is continuously or stepwise changed in the thickness direction of the spacer. The shock absorbing automotive floor spacer according to any one of claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001328910A JP2003127796A (en) | 2001-10-26 | 2001-10-26 | Shock absorbing floor spacer for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001328910A JP2003127796A (en) | 2001-10-26 | 2001-10-26 | Shock absorbing floor spacer for automobile |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007018194A Division JP4053578B2 (en) | 2007-01-29 | 2007-01-29 | Shock-absorbing automotive floor spacer |
| JP2007018193A Division JP4021929B2 (en) | 2007-01-29 | 2007-01-29 | Shock-absorbing automotive floor spacer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003127796A true JP2003127796A (en) | 2003-05-08 |
| JP2003127796A5 JP2003127796A5 (en) | 2007-03-15 |
Family
ID=19144893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001328910A Pending JP2003127796A (en) | 2001-10-26 | 2001-10-26 | Shock absorbing floor spacer for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003127796A (en) |
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| JP2005145356A (en) * | 2003-11-19 | 2005-06-09 | Hayashi Engineering Inc | Floor underlay for automobile |
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