JPH0292786A - Step for automobile - Google Patents
Step for automobileInfo
- Publication number
- JPH0292786A JPH0292786A JP24532088A JP24532088A JPH0292786A JP H0292786 A JPH0292786 A JP H0292786A JP 24532088 A JP24532088 A JP 24532088A JP 24532088 A JP24532088 A JP 24532088A JP H0292786 A JPH0292786 A JP H0292786A
- Authority
- JP
- Japan
- Prior art keywords
- stamping
- resin
- reinforcing material
- pet
- automobile
- 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
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 239000012779 reinforcing material Substances 0.000 claims abstract description 12
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract 7
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract 7
- -1 polyethylene terephthalate Polymers 0.000 claims abstract 3
- 239000003365 glass fiber Substances 0.000 claims description 11
- 239000012778 molding material Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 abstract description 8
- 238000000465 moulding Methods 0.000 abstract description 8
- 238000002844 melting Methods 0.000 abstract description 6
- 230000008018 melting Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000000835 fiber Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000004512 die casting Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 235000010005 Catalpa ovata Nutrition 0.000 description 1
- 240000004528 Catalpa ovata Species 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
Landscapes
- Vehicle Step Arrangements And Article Storage (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明はトラック等の自動車用ステップ（踏板）に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to steps for automobiles such as trucks.
（従来の技術）
従来、自動車用ステップとしては、鋼板やアルミダイキ
ャス製のものが使用されていた。(Prior Art) Conventionally, steps for automobiles have been made of steel plates or aluminum die-casting.
（発明が解決しようとする課題）
しかしながら、これら金属製のものは、■腐食しやすい
、■重い、■部品点数が多く、組み立て工数が多くコス
ト高であるなどの問題点があった。(Problems to be Solved by the Invention) However, these metal products have problems such as: 1) They are easily corroded, 2) They are heavy, and 2) They have a large number of parts, require a large number of assembly steps, and are expensive.
一方、該ステップをプラスチックスで構成すれば上記■
〜■の問題点を解決することは容易である。しかるに、
通常のプラスチックスでは、自動車ステップの備うべき
性能、例えば０人が足を掛け、それに体重を乗せ、自動
車に乗降する際に破壊しない強度が必要なこと、０人が
足を掛けたときに滑りにくいこと等の課題が解決されな
いのが実情である。On the other hand, if the step is made of plastic, the above
It is easy to solve the problems in ~■. However,
Ordinary plastics need to have the performance that a car step should have, such as strength that will not break when a person steps on it, puts their weight on it, and gets in and out of the car. The reality is that issues such as non-slipness remain unsolved.
本発明の目的は、■及び■等の自動車用ステップとして
の本来の性能を十分に満足させながら、■〜■の課題を
解決した自動車ステップを提供することである。An object of the present invention is to provide an automobile step that solves the problems (1) to (2) while fully satisfying the original performance of an automobile step such as (1) and (2).
（課題を解決するための手段）
上記課題は、補強材としてガラス長繊維を含有するＰＥ
Ｔ系樹脂からなるスタンピング成形材料をスタンピング
成形することによって得られることを特徴とするステッ
プによって達成されるものである。(Means for solving the problem) The above problem is achieved by using PE containing long glass fibers as a reinforcing material.
This is achieved by a step characterized in that it is obtained by stamping a stamping molding material made of T-based resin.
主に、ガラス長繊維等の繊維状補強材によって補強され
た熱可塑性樹脂成形材料をスタンピング成形材料といい
、樹脂の軟化点、または融点以上の温度に予熱した後、
これを一対の金型間に供給し急速に圧力を加えて圧縮成
形する方法はスタンピング成形法と呼ばれている。Mainly, thermoplastic resin molding materials reinforced with fibrous reinforcing materials such as long glass fibers are called stamping molding materials, and after being preheated to a temperature above the softening point or melting point of the resin,
The method of compression molding by supplying this between a pair of molds and rapidly applying pressure is called a stamping molding method.
本発明における自動車用ステップは、例えば次の様にし
て得ることができる。まず補強材としてガラス長繊維を
用い、これをＰＥＴ系樹脂シートと交互に重ねて上下に
一対のベルトを有する装置に供給し、樹脂の融点以上の
温度に加熱すると同時に加圧し補強材と樹脂を一体化せ
しめた後、冷却することによりスタンピング成形材料を
得ることができる。The automobile step according to the present invention can be obtained, for example, as follows. First, long glass fibers are used as a reinforcing material, and they are alternately stacked with PET resin sheets and fed to a device having a pair of upper and lower belts, heated to a temperature higher than the melting point of the resin, and simultaneously pressurized to separate the reinforcing material and the resin. After integrating, a stamping molding material can be obtained by cooling.
本発明において用いる補強材はガラス長繊維であり、該
ガラス長繊維は直径５〜１５μのフィラメントが２０〜
２００本収束されたロービングが２０〜５０ｍｍ長さに
切断されているものが好ましく、また該ガラス長繊維の
表面には、樹脂との適当な接着性を付与する様な処理剤
、例えばシランカップリング剤等によって処理されてい
ることが好ましい。The reinforcing material used in the present invention is a long glass fiber, and the long glass fiber has a filament of 20 to 15 μm in diameter.
It is preferable that 200 converged rovings are cut into lengths of 20 to 50 mm, and the surface of the long glass fibers is treated with a treatment agent such as a silane coupling agent that imparts appropriate adhesion to the resin. It is preferable that the material be treated with a chemical agent or the like.
さらに他の補強材として、ガラス短！＆維等の繊維状物
質、マイカ、ガラスフレーク、タルク等のフレーイト等
の針状フィラーを各々単独、又は混合して用いることが
できる。該ガラス長繊維を含む補強材全体の含有率は、
２５〜６０重量％とすることが望ましい。また、本発明
において熱可塑性樹脂はＰＥＴ系樹脂である。該樹脂は
ＰＥＴ単独、少割合の他の単量体を共重合した共重合Ｐ
ＥＴ、もしくは他樹脂とブレンドして用いてもさしつか
えなく、さらに特性付与のため、例えば結晶化核剤、加
水分解防止剤、酸化防止剤、紫外線吸収剤、難燃剤、着
色剤、内部離型剤、帯電防止剤等の添加剤を適宜加える
ことができる。Furthermore, as another reinforcement material, short glass! Fibrous substances such as &fiber and acicular fillers such as mica, glass flakes, and flakes such as talc can be used alone or in combination. The content of the entire reinforcing material containing the long glass fibers is:
The content is preferably 25 to 60% by weight. Further, in the present invention, the thermoplastic resin is a PET resin. The resin is a copolymer of PET alone and a small proportion of other monomers.
ET or blended with other resins may be used, and further properties may be added, such as crystallization nucleating agents, hydrolysis inhibitors, antioxidants, ultraviolet absorbers, flame retardants, colorants, and internal mold release agents. , antistatic agents and other additives may be added as appropriate.
続いて、該スタンピング成形材料を所定のサイズに裁断
した後、ＰＥＴ系樹脂の軟化点、又は融点以上に保った
加熱炉の中に入れ樹脂を溶融させた後、すみやかにＰＥ
Ｔ系樹脂のガラス転移点以上、融点以下の温度に保った
一対の自動車用ステップ金型の中に供給し、スタンピン
グ成形をすることにより本発明における自動車用ステッ
プを得ることができる。該スタンピング成形における金
型温度ハＬＯｏ〜１７０℃、成形圧力はｔｏｏ −３０
０ｋｇ／ｃｍ’。Next, after cutting the stamping molding material into a predetermined size, it is placed in a heating furnace maintained at the softening point or above the melting point of the PET resin to melt the resin.
The automotive step of the present invention can be obtained by supplying the T-based resin into a pair of automotive step molds maintained at a temperature above the glass transition point and below the melting point and performing stamping molding. The mold temperature in the stamping molding was LOo~170°C, and the molding pressure was too -30°C.
0 kg/cm'.
成形時間は３０〜９０秒にすることが好ましい。The molding time is preferably 30 to 90 seconds.
第１図は、本発明に係わる自動車用ステップの１例を示
した斜視図である。自動車用ステップ（１）は全体が補
強材としてガラス長繊維を含有するＰＥＴ系樹脂からな
るスタンピング成形材料を用いてステップ板（２）とス
テップ周辺の取り付は用部品（３，４，５）がスタンピ
ング成形により一体成形されている。第２図は、従来技
術による鋼板製自動車用ステップの各部品の斜視図であ
り、第３図は、従来技術によるアルミダイキャスト製自
動車用ステップの各部品の斜視図である。第２図または
第３図に示した従来の金属製ステップは、ステップ板（
１２または梓）の他に取り付は用の周辺部品（１３，１
４，１５または２３．２４．２５）が必要であり、部品
点数が共に４点あり、それぞれそれらを組み立てて、ス
テップを作っている。FIG. 1 is a perspective view showing an example of a step for an automobile according to the present invention. The entire automobile step (1) is made of a stamping molding material made of PET resin containing long glass fibers as a reinforcing material, and the step plate (2) and parts (3, 4, 5) are used to attach the area around the step. are integrally molded by stamping. FIG. 2 is a perspective view of each part of a conventional steel plate step for an automobile, and FIG. 3 is a perspective view of each part of an aluminum die-cast step for an automobile according to the prior art. The conventional metal step shown in FIG. 2 or 3 has a step plate (
In addition to the peripheral parts (13, 1) for installation (12 or Azusa),
4, 15 or 23, 24, and 25), and there are four parts in total, and each of them is assembled to make a step.
［実施例］
以下に実施例にて本発明を具体的に説明するが、本発明
は以下の実施例に限定されるものではない。[Examples] The present invention will be specifically explained below using Examples, but the present invention is not limited to the following Examples.
家）やジイジＪ
縦３０ｃｍｑ横２０ｃｍ、厚さ０．４ｃｍの長方形のガ
ラス長繊維強化ＰＥＴ系スタンピング成形材料を、遠赤
外加熱装置を用い２９０℃で４分間加熱したものを１６
０°Ｃの金型上に６枚重ねてセットし、成形圧が１５０
ｋｇ／ｃｍ’、保圧時間４５秒で成形し、第１図に示し
たＰＥＴ製自製本動車用ステップた。このステップは重
量が２．０４に、であり、この重量は従来のアルミダイ
キャスト製の７０％、鋼鉄製の５０％であった。また該
ステップは自動車用ステップとして十分な強度と耐久性
も育していた。16. A rectangular long glass fiber reinforced PET stamping molding material with a length of 30 cm, a width of 20 cm, and a thickness of 0.4 cm was heated at 290°C for 4 minutes using a far-infrared heating device.
Set 6 sheets stacked on a mold at 0°C, molding pressure is 150
kg/cm' and a holding pressure time of 45 seconds to form a self-made PET step for a moving vehicle as shown in FIG. The weight of this step was 2.04, which was 70% of the conventional aluminum die-casting and 50% of the steel. The step also had sufficient strength and durability as an automobile step.
比較例
市販のガラス長繊維強化ポリプロピレン樹脂系スタンピ
ング成形材料である・シート（・・・・・・・・・・・
ガラス含有量４０重量％）を用いて実施例１と同じ形状
のステップをスタンピング成形することにより得た。該
ステップはその末端部及びリブ部へのガラス長ｍｓの充
填が不充分であり、前記した０人が足を掛けそれに体重
を乗せ、自動車に乗降する際に破壊しない強度が必要な
ことの点で、これらガラス繊維の充てんが不充分な部位
での破壊が実用評価において発生した。Comparative Example Sheet (...
A step having the same shape as in Example 1 was obtained by stamping using a glass material (glass content: 40% by weight). The end portion and rib portion of the step are insufficiently filled with glass length ms, and the step requires strength to prevent it from breaking when a person steps on it and puts their weight on it and gets in and out of the car. In practical evaluation, breakage occurred in areas where the glass fibers were insufficiently filled.
（発明の効果）
以上説明したとおりＰＥＴ系樹脂よりなるスタンピング
成形材料をスタンピング成形することによって得られた
自動車用ステップは、人がそれに足を掛けて体重を乗せ
、自動車を乗降する際に破壊しない強度を持ち、さらに
人が足を掛けたときに滑らず腐食せず、金属製のものよ
り軽く、部品点数も一点で、組み立てられる。従って作
業工数も少なく、従来の金属製ステップに比し大幅にコ
スト低減が達成される。(Effect of the invention) As explained above, the automobile step obtained by stamping and molding a stamping molding material made of PET resin does not break when a person puts their foot on it and puts their weight on it and gets in and out of the car. It is strong, does not slip or corrode when stepped on, is lighter than metal products, and can be assembled with only one part. Therefore, the number of man-hours required is reduced, and costs are significantly reduced compared to conventional metal steps.
第１図は、本発明に係わるＰＥＴ製自製本動車用ステッ
プ例を示した斜視図である。第２図及び第３図は従来の
自動車用ステップの部品を示した斜視図であり、第２図
は鋼板製ステップの例であり、第３図はアルミダイキャ
スト製ステップの例である。
図中１は本発明の一体成形された自動車用ステップ、２
はステップ板、３．４．５はステップ取付は用部品であ
る。FIG. 1 is a perspective view showing an example of a step for a self-made PET motor vehicle according to the present invention. FIGS. 2 and 3 are perspective views showing parts of conventional steps for automobiles. FIG. 2 is an example of a step made of steel plate, and FIG. 3 is an example of a step made of aluminum die-casting. In the figure, 1 is an integrally molded automobile step of the present invention, and 2 is
3.4.5 is the step plate, and 3.4.5 is the part for mounting the step.
Claims (1)
フタレート（ＰＥＴ）系樹脂からなるスタンピング成形
材料をスタンピング成形することによって得られること
を特徴とする自動車用ステップ。A step for an automobile, characterized in that it is obtained by stamping a stamping molding material made of a polyethylene terephthalate (PET) resin containing long glass fibers as a reinforcing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24532088A JPH0292786A (en) | 1988-09-28 | 1988-09-28 | Step for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24532088A JPH0292786A (en) | 1988-09-28 | 1988-09-28 | Step for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0292786A true JPH0292786A (en) | 1990-04-03 |
Family
ID=17131907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24532088A Pending JPH0292786A (en) | 1988-09-28 | 1988-09-28 | Step for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0292786A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054167A1 (en) * | 1998-04-21 | 1999-10-28 | Aeroquip Corporation | Automotive running board |
| US6979008B2 (en) * | 2002-09-27 | 2005-12-27 | Andrews Eugene C | Apparatus for tractor access and storage |
| US7000932B2 (en) * | 2001-11-02 | 2006-02-21 | Ventra Group Inc. | Automotive vehicle polymeric running board |
| US20130221632A1 (en) * | 2012-02-27 | 2013-08-29 | Fab Fours Inc. | Vehicle step, step assembly and method of forming a step assembly |
-
1988
- 1988-09-28 JP JP24532088A patent/JPH0292786A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054167A1 (en) * | 1998-04-21 | 1999-10-28 | Aeroquip Corporation | Automotive running board |
| US6050579A (en) * | 1998-04-21 | 2000-04-18 | Aeroquip Corporation | Automotive running board |
| AU742893B2 (en) * | 1998-04-21 | 2002-01-17 | Aeroquip Corporation | Automotive running board |
| CN1098178C (en) * | 1998-04-21 | 2003-01-08 | 艾罗奎普有限公司 | Automotive running board |
| US7000932B2 (en) * | 2001-11-02 | 2006-02-21 | Ventra Group Inc. | Automotive vehicle polymeric running board |
| US6979008B2 (en) * | 2002-09-27 | 2005-12-27 | Andrews Eugene C | Apparatus for tractor access and storage |
| US20130221632A1 (en) * | 2012-02-27 | 2013-08-29 | Fab Fours Inc. | Vehicle step, step assembly and method of forming a step assembly |
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