JPH09236156A - V-ribbed belt - Google Patents

V-ribbed belt

Info

Publication number
JPH09236156A
JPH09236156A JP7125096A JP7125096A JPH09236156A JP H09236156 A JPH09236156 A JP H09236156A JP 7125096 A JP7125096 A JP 7125096A JP 7125096 A JP7125096 A JP 7125096A JP H09236156 A JPH09236156 A JP H09236156A
Authority
JP
Japan
Prior art keywords
belt
ribbed belt
core wire
cushion rubber
ribbed
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
JP7125096A
Other languages
Japanese (ja)
Other versions
JP3190819B2 (en
Inventor
Takashi Kinoshita
隆史 木下
Hitoshi Hanesaka
仁志 羽坂
Masahito Nakajima
正仁 中嶋
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.)
Mitsuboshi Belting Ltd
Original Assignee
Mitsuboshi Belting 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 Mitsuboshi Belting Ltd filed Critical Mitsuboshi Belting Ltd
Priority to JP07125096A priority Critical patent/JP3190819B2/en
Publication of JPH09236156A publication Critical patent/JPH09236156A/en
Application granted granted Critical
Publication of JP3190819B2 publication Critical patent/JP3190819B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a V-ribbed belt to improve bend fatigue properties through the decrease of the thickness of a belt and be used for a serpentine drive. SOLUTION: A V-ribbed belt 1 comprises a stretch part 2; a cushion rubber part 5 in which core wires 4 are embedded along the longitudinal direction of a belt; and a compression part 6 positioned adjacently to the cushion rubber part 5 and having a plurality of ribs 7 extending peripherally of the belt. The core wire 4 is formed of an adhesion-treated cord with a total denier of 2,700-3,300 produced by twisting a polyester fiber filament group consisting mainly of ethylene-2 and 6-naphthalate.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】この発明はVリブドベルトに
係り、詳しくは屈曲疲労性を改善したサーペンティン駆
動が可能なVリブドベルトに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a V-ribbed belt, and more particularly to a V-ribbed belt capable of driving a serpentine with improved bending fatigue.

【0002】[0002]

【従来の技術】Vリブドベルトは、クッションゴム部中
に心線を埋設し、該クッションゴム部の上部には必要に
応じてカバー帆布を積層し、そして該クッションゴム部
の下部に複数のリブ部を設けている。このVリブドベル
トは、Vベルトに代わって自動車のエアーコンプレッサ
ーやオルタネータ等の補機駆動の動力伝動用として広く
使用されてきており、また最近ではエンジンルームのコ
ンパクト化やエンジンの軽量化に伴ってプーリ径が小さ
くなるとともにサーペンティン駆動化が図られている。
2. Description of the Related Art In a V-ribbed belt, a core wire is embedded in a cushion rubber portion, a cover canvas is laminated on an upper portion of the cushion rubber portion if necessary, and a plurality of rib portions are formed on a lower portion of the cushion rubber portion. Is provided. This V-ribbed belt has been widely used as an alternative to the V-belt for power transmission for driving auxiliary equipment such as automobile air compressors and alternators, and recently, as the engine room has become more compact and the engine has become lighter, pulleys have been used. As the diameter becomes smaller, serpentine drive is being promoted.

【0003】上記サーペンティン駆動では、多数の補機
に連結されたプーリを同一平面上に配置し、複数のプー
リに一本のベルトを掛架するものであり、ベルトを大き
く曲がりくねった状態で配置したもので、ベルトにとっ
ては極めて過酷な状態に置かれている。このために、V
リブドベルトの更なる屈曲性改良が必要になってきてい
る。ベルトの屈曲性改良には、リブゴムの耐熱性向上が
必要であるばかりか、ベルトの厚みを薄くする必要があ
った。
In the above-mentioned serpentine drive, pulleys connected to a large number of auxiliary machines are arranged on the same plane, and a single belt is hung on a plurality of pulleys. The belts are arranged in a large meandering state. However, it is in a very harsh condition for the belt. Because of this, V
There is a need to further improve the flexibility of ribbed belts. In order to improve the flexibility of the belt, it is necessary not only to improve the heat resistance of the rib rubber but also to reduce the thickness of the belt.

【0004】[0004]

【発明が解決しようとする課題】ベルトの厚みを薄くす
るために、リブ部の高さを小さくすると、リブ部とプー
リの接触面積が減少し、伝達効率が悪くなる点が指摘さ
れている。もう1つは、心線を細くしてベルトの厚みを
薄くする方法である。しかし、ポリエチレンテレフタレ
ートを主たる構成単位とするポリエステル繊維フィラメ
ント(PET)で心線を細くすると、モジュラスが低下
し、またベルトのモジュラスも低下するために、ベルト
のスリップ率が高くなり、ベルトの摩耗、そしてベルト
の温度が増大する欠点があった。
It has been pointed out that if the height of the rib portion is reduced in order to reduce the thickness of the belt, the contact area between the rib portion and the pulley is reduced and the transmission efficiency is deteriorated. The other is to reduce the thickness of the belt by thinning the core wire. However, when the core fiber is thinned with a polyester fiber filament (PET) containing polyethylene terephthalate as a main constituent unit, the modulus is lowered, and the modulus of the belt is also lowered, so that the slip ratio of the belt is increased and the belt is worn, Then, there is a drawback that the temperature of the belt increases.

【0005】また、実開平4−34545号公報には、
トータル2,000〜4,000デニールのアラミド繊
維からなるコードを心線として用いたVリブドベルトが
開示されている。しかし、心線にアラミド繊維を使用す
ることにより、心線を細くベルト厚みを薄くしてモジュ
ラスを高くすることが可能であるが、走行時のベルトの
熱収縮が起こらないために、オートテンショナーを使用
しなければならず、伝動機構が複雑になるという問題が
あった。本発明はこのような問題点を改善するものであ
り、これに対処するものでベルトの厚みを薄くして屈曲
疲労性を改善し、そしてサーペンティン駆動に使用でき
るVリブドベルトを提供することを目的とする。
Further, in Japanese Utility Model Laid-Open No. 4-34545,
A V-ribbed belt using a cord made of aramid fiber having a total of 2,000 to 4,000 denier as a core wire is disclosed. However, by using aramid fiber for the core wire, it is possible to thin the core wire and thin the belt thickness to increase the modulus, but since the belt does not contract heat during running, the auto tensioner is It had to be used, and there was a problem that the transmission mechanism became complicated. SUMMARY OF THE INVENTION The present invention addresses such problems, and an object thereof is to provide a V-ribbed belt which can be used for driving a serpentine by reducing the thickness of the belt to improve bending fatigue. To do.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
に、本発明は伸張部と、ベルト長手方向に沿って心線を
埋設したクッションゴム部と、クッションゴム部に隣接
してベルトの周方向に延びる複数のリブを有する圧縮部
とからなるVリブドベルトにおいて、上記心線がエチレ
ン−2,6−ナフタレートを主たる構成単位とするポリ
エステル繊維フィラメント群を諸撚してトータルデニー
ル2,700〜3,300にした接着処理コードである
Vリブドベルトを含む。また、本発明は心線の巻き付け
ピッチが0.7〜1.0mmであるVリブドベルトも含
む。
In order to achieve the above object, the present invention is directed to an extension portion, a cushion rubber portion in which a cord is embedded along the belt longitudinal direction, and a belt circumference adjacent to the cushion rubber portion. In a V-ribbed belt composed of a compression part having a plurality of ribs extending in the direction, a total denier of 2,700 to 3 is obtained by twisting a polyester fiber filament group whose core is ethylene-2,6-naphthalate as a main constituent unit. , 300, which is a V-ribbed belt which is an adhesion processing code. The present invention also includes a V-ribbed belt having a core wire winding pitch of 0.7 to 1.0 mm.

【0007】[0007]

【作用】本発明のVリブドベルトでは、心線としてエチ
レン−2,6−ナフタレートを主たる構成単位とするポ
リエステル繊維フィラメント群を諸撚してトータルデニ
ール2,700〜3,300にした接着処理コードを使
用しているため、ベルトのモジュラスを低下させずにベ
ルトを薄くすることができ、ベルトの屈曲性も改善する
ことができる。しかも、心線の巻き付けピッチを0.7
〜1.0mmにすることで、モジュラスの高い、またベ
ルトの屈曲性も改善することができる。
In the V-ribbed belt of the present invention, an adhesive treatment cord obtained by plying a polyester fiber filament group having ethylene-2,6-naphthalate as a main constituent unit as a core wire into a total denier of 2,700 to 3,300. Since it is used, the belt can be made thinner without lowering the belt modulus and the belt flexibility can be improved. Moreover, the winding pitch of the core wire is 0.7
By setting the thickness to 1.0 mm, it is possible to improve the flexibility of the belt having a high modulus.

【0008】[0008]

【発明の実施の形態】次に、本発明に係るVリブドベル
トについて、添付図面に基づき具体的に説明する。図1
に示すVリブドベルト1は、カバー帆布3からなる伸張
部2と、コードよりなる心線4を埋設したクッションゴ
ム部5と、その下側に弾性体層である圧縮部6からなっ
ている。この圧縮部6は、ベルト長手方向に延びる断面
略三角形である台形の複数のリブ7を有している。
BEST MODE FOR CARRYING OUT THE INVENTION Next, a V-ribbed belt according to the present invention will be specifically described with reference to the accompanying drawings. FIG.
The V-ribbed belt 1 shown in FIG. 2 includes an extension portion 2 made of a cover canvas 3, a cushion rubber portion 5 in which a cord 4 made of a cord is embedded, and a compression portion 6 which is an elastic layer below the cushion rubber portion 5. The compression portion 6 has a plurality of trapezoidal ribs 7 extending in the belt longitudinal direction and having a substantially triangular cross section.

【0009】前記リブ7には、水素化ニトリルゴム、ク
ロロプレンゴム、天然ゴム、CSM、ACSM、SBR
が使用され、水素化ニトリルゴムは水素添加率80%以
上であり、耐熱性及び耐オゾン性の特性を発揮するため
に、好ましくは90%以上が良い。水素添加率80%未
満の水素化ニトリルゴムは、耐熱性及び耐オゾン性は極
度に低下する。耐油性及び耐寒性を考慮すると、結合ア
クリロニトリル量は20〜45%の範囲が好ましい。
The rib 7 has hydrogenated nitrile rubber, chloroprene rubber, natural rubber, CSM, ACSM, SBR.
The hydrogenated nitrile rubber has a hydrogenation rate of 80% or more, and preferably 90% or more in order to exhibit heat resistance and ozone resistance. A hydrogenated nitrile rubber having a hydrogenation rate of less than 80% has extremely low heat resistance and ozone resistance. In consideration of oil resistance and cold resistance, the amount of bound acrylonitrile is preferably in the range of 20 to 45%.

【0010】また、上記リブ7には、ナイロン6、ナイ
ロン66、ポリエステル、綿、アラミドからなる短繊維
を混入してリブ7の耐側圧性を向上させるとともに、プ
ーリと接する面になるリブ7の表面に該短繊維を突出さ
せ、リブ7の摩擦係数を低下させて、ベルト走行時の騒
音を軽減させる。これらの短繊維のうち、剛直で強度を
有し、しかも耐摩耗性を有するアラミド繊維とそれ以外
の繊維を併用することが望ましい。
Further, short fibers made of nylon 6, nylon 66, polyester, cotton, and aramid are mixed in the ribs 7 to improve the lateral pressure resistance of the ribs 7 and the ribs 7 to be the surface in contact with the pulleys. The short fibers are projected on the surface to reduce the friction coefficient of the ribs 7 and reduce noise when the belt is running. Of these short fibers, it is desirable to use aramid fibers that are rigid, have strength, and have abrasion resistance, and other fibers in combination.

【0011】上記アラミド短繊維が前述の効果を充分に
発揮するためには、アラミド繊維の繊維長さは1〜20
mmで、その添加量はゴム100重量部に対して1〜3
0重量部である。このアラミド繊維は分子構造中に芳香
環をもつ、例えば商品名コーネックス、ノーメックス、
ケブラー、テクノーラ、トワロン等である。尚、アラミ
ド短繊維の添加量が1重量部未満の場合には、リブ7の
ゴムが粘着しやすくなって摩耗する欠点があり、また一
方30重量部を越えると、短繊維がゴム中に均一に分散
しなくなる。
In order for the short aramid fibers to sufficiently exhibit the above-mentioned effects, the fiber length of the aramid fibers is 1 to 20.
mm, the addition amount is 1 to 3 with respect to 100 parts by weight of rubber.
0 parts by weight. This aramid fiber has an aromatic ring in the molecular structure, for example, trade name Conex, Nomex,
Examples include Kevlar, Technora, and Twaron. If the amount of aramid short fibers added is less than 1 part by weight, the rubber of the ribs 7 tends to stick and wear. On the other hand, if it exceeds 30 parts by weight, the short fibers are evenly distributed in the rubber. No longer disperse in.

【0012】また、上記アラミド短繊維はリブ7のゴム
との接着を向上させるためにも、該短繊維をエポキシ化
合物やイソシアネート化合物から選ばれた処理液によっ
て接着処理される。
In order to improve the adhesion of the ribs 7 to the rubber, the aramid short fibers are subjected to an adhesion treatment with a treatment liquid selected from epoxy compounds and isocyanate compounds.

【0013】また、上記心線4としては、エチレン−
2,6−ナフタレートを主たる構成単位とするポリエス
テル繊維フィラメント群を下撚りと上撚りを互いに異な
る方向へ撚った、いわゆる諸撚して得られたトータルデ
ニール2,700〜3,300の接着処理したコードが
使用される。このコードの上撚り数は10〜23/10
cmであり、また下撚り数は17〜38/10cmであ
る。
The core wire 4 is made of ethylene-
Adhesion treatment of total denier 2,700 to 3,300 obtained by so-called ply-twisting, in which lower twist and upper twist of a polyester fiber filament group having 2,6-naphthalate as a main constituent unit are twisted in different directions The code you used is used. The number of twists of this cord is 10-23 / 10
cm, and the number of lower twists is 17 to 38/10 cm.

【0014】エチレン−2,6−ナフタレート繊維は、
ポリエチレンテレフタレート繊維に比べてモジュラスが
高い点で優れている。このため、エチレン−2,6−ナ
フタレート繊維を心線に使用する場合には、心線の径を
細くしてもモジュラスを高く保つことができ、またベル
トの厚みを薄くして可撓性を高めることもできる。尚、
アラミド繊維では、熱収縮がないためにオートテンショ
ナーが必要になり、本発明の目的は達成されない。
The ethylene-2,6-naphthalate fiber is
It is superior in that it has a higher modulus than polyethylene terephthalate fiber. Therefore, when the ethylene-2,6-naphthalate fiber is used for the core wire, the modulus can be kept high even if the diameter of the core wire is made small, and the belt is made thin to have flexibility. It can also be increased. still,
Since the aramid fiber has no heat shrinkage, an autotensioner is required, and the object of the present invention is not achieved.

【0015】上記フィラメント群を諸撚にする理由とし
ては、高水準に心線のモジュラスを維持するためであ
り、片撚の場合にはモジュラスが低くなりやすい。
The reason why the filament group is twisted is that the modulus of the core wire is maintained at a high level, and in the case of single twist, the modulus tends to be low.

【0016】トータルデニールが2,700未満の場合
には、心線のモジュラス、強力が低くなり過ぎ、また
3,300を越えると、ベルトの厚みが厚くなって、屈
曲疲労性が悪くなる。
When the total denier is less than 2,700, the modulus and strength of the core wire are too low, and when it exceeds 3,300, the belt becomes thick and the bending fatigue is deteriorated.

【0017】上記心線4の接着処理は、まず(1)未処
理コードをエポキシ化合物やイソシアネート化合物から
選ばれた処理液を入れたタンクに含浸してプレディップ
した後、(2)160〜200°Cに温度設定した乾燥
炉に30〜600秒間通して乾燥し、(3)続いてRF
L液からなる接着液を入れたタンクに浸漬し、(4)2
00〜250°Cに温度設定した延伸熱固定処理機に3
0〜600秒間通して−1〜3%延伸して延伸処理コー
ドとする。
For the adhesion treatment of the core wire 4, first, (1) an untreated cord is impregnated in a tank containing a treatment liquid selected from an epoxy compound or an isocyanate compound and pre-dipped, and then (2) 160 to 200. It is dried by passing it through a drying oven set to a temperature of ° C for 30 to 600 seconds.
Immerse in the tank containing the adhesive liquid consisting of L liquid, and (4) 2
3 for a stretching heat-fixing machine whose temperature is set to 00 to 250 ° C.
It is stretched by -1 to 3% for 0 to 600 seconds to obtain a stretching treatment cord.

【0018】上記エポキシ化合物としては、例えばエチ
レングリコール、グリセリン、ペンタエリスリトール等
の多価アルコールや、ポリエチレングリコール等のポリ
アルキレングリコールとエピクロルヒドリンのようなハ
ロゲン含有エポキシ化合物との反応生成物や、レゾルシ
ン、ビス(4−ヒドロキシフェニル)ジメチルメタン、
フェノール・ホルムアルデヒド樹脂、レゾルシン・ホル
ムアルデヒド樹脂等の多価フェノール類やハロゲン含有
エポキシ化合物との反応生成物である。このエポキシ化
合物はトルエン、メチルエチルケトン等の有機溶剤に混
合して使用される。また、イソシアネート化合物として
は、例えば4,4’−ジフェニルメタンジイソシアネー
ト、トルエン2,4−ジイソシアネート、P−フェニル
ジイソシアネート、ポリアリールポリイソシアネート等
がある。このイソシアネート化合物もトルエン、メチル
エチルケトン等の有機溶剤に混合して使用される。
Examples of the above-mentioned epoxy compound include polyhydric alcohols such as ethylene glycol, glycerin and pentaerythritol, reaction products of polyalkylene glycol such as polyethylene glycol and halogen-containing epoxy compounds such as epichlorohydrin, resorcin, bisphenol. (4-hydroxyphenyl) dimethylmethane,
It is a reaction product with polyhydric phenols such as phenol / formaldehyde resin and resorcin / formaldehyde resin and halogen-containing epoxy compounds. This epoxy compound is used by mixing it with an organic solvent such as toluene or methyl ethyl ketone. Examples of the isocyanate compound include 4,4′-diphenylmethane diisocyanate, toluene 2,4-diisocyanate, P-phenyl diisocyanate and polyaryl polyisocyanate. This isocyanate compound is also used by being mixed with an organic solvent such as toluene and methyl ethyl ketone.

【0019】RFL液はレゾルシンとホルマリンとの初
期縮合体をラテックスに混合したものであり、ここで使
用するラテックスとしてはクロロプレン、スチレン・ブ
タジエン・ビニルピリジン三元共重合体、水素化ニトリ
ル、NBR等である。
The RFL liquid is a mixture of latex with an initial condensate of resorcin and formalin. As the latex used here, chloroprene, styrene / butadiene / vinylpyridine terpolymer, hydrogenated nitrile, NBR, etc. Is.

【0020】上記延伸熱固定処理されたコードは、スピ
ニングピッチ、即ち心線の巻き付けピッチを0.7〜
1.0mmにすることで、モジュラスの高いベルトに仕
上げることができる。もし0.7mm未満になると、コ
ードが隣接するコードに乗り上げて巻き付けができず、
一方1.0mmを越えると、ベルトのモジュラスが徐々
に低くなる。
The cord which has been subjected to the stretching heat setting treatment has a spinning pitch, that is, a winding pitch of the core wire of 0.7 to
A belt having a high modulus can be finished by setting the thickness to 1.0 mm. If it is less than 0.7 mm, the cord will ride on the adjacent cord and cannot be wound,
On the other hand, when it exceeds 1.0 mm, the modulus of the belt gradually decreases.

【0021】上記カバー帆布3は綿、ポリアミド、ポリ
エチレンテレフタレート、アラミド繊維からなる糸を用
いて、平織、綾織、朱子織等に製織した布である。
The cover canvas 3 is a cloth woven into a plain weave, a twill weave, a satin weave, etc., using a thread made of cotton, polyamide, polyethylene terephthalate, and aramid fiber.

【0022】[0022]

【実施例】以下に、本発明を具体的な実施例のより更に
詳細に説明する。 実施例1、比較例1〜4 心線として、1,000デニールのエチレン−2,6−
ナフタレート繊維(PEN繊維)、1,100デニール
のポリエチレンテレフタレート繊維(PET繊維)、お
よび1,000デニールのアラミド繊維(ケブラー)を
用いて表1に示す構成の白地ロープを準備した。
EXAMPLES Hereinafter, the present invention will be described in more detail with reference to specific examples. Example 1 and Comparative Examples 1 to 4 1,000 denier ethylene-2,6-
A white background rope having the constitution shown in Table 1 was prepared using naphthalate fibers (PEN fibers), polyethylene terephthalate fibers (PET fibers) having a denier of 1,100, and aramid fibers (Kevlar) having a denier of 1,000.

【0023】各白地ロープを表1に示す接着剤をプレデ
ィップした後、約170〜190°Cの温度設定した乾
燥炉に10〜300秒間通して乾燥し、続いて表2に示
すRFL液からなる接着剤を入れたタンクに浸漬し、約
200〜250°Cに温度設定した熱延伸固定処理機に
10〜300秒間通して−1〜3%延伸して延伸固定処
理コードとした。
After pre-diping each white rope with the adhesive shown in Table 1, it was dried by passing it through a drying oven set at a temperature of about 170 to 190 ° C. for 10 to 300 seconds, and then from the RFL solution shown in Table 2. It was dipped in a tank containing the adhesive and was passed through a hot stretching / fixing machine set at a temperature of about 200 to 250 ° C. for 10 to 300 seconds to stretch by −1 to 3% to obtain a stretching and fixing treatment cord.

【0024】[0024]

【表1】 [Table 1]

【0025】[0025]

【表2】 [Table 2]

【0026】本実施例で作製したVリブドベルトでは、
上記各延伸固定処理コードからなる心線がクッションゴ
ム部内に埋設され、その上側にゴム付綿帆布を1プライ
積層し、他方クッションゴム部の下側には圧縮部があっ
て3個のリブがベルト長手方向に有している。得られた
VリブドベルトはRAM規格による長さ1,100mm
のK型3リブドベルトであり、リブピッチ3.56m
m、リブ高さ2.9mm、リブ角度40°、そして種々
のベルト厚さを有するものである。
In the V-ribbed belt produced in this example,
A core wire made of the above stretch fixing cords is embedded in the cushion rubber portion, and one ply of rubber-coated cotton canvas is laminated on the upper side thereof, while the cushion rubber portion has a compression portion on the lower side thereof and three ribs are provided. It has in the longitudinal direction of the belt. The V-ribbed belt obtained has a length of 1,100 mm according to the RAM standard.
K type 3-ribbed belt with a rib pitch of 3.56 m
m, rib height 2.9 mm, rib angle 40 °, and various belt thicknesses.

【0027】ここで圧縮部およびクッションゴム部を、
それぞれ表3に示すゴム組成物から調製し、バンバリー
ミキサーで混練後、カレンダーで圧延したものを用い
た。圧縮部には、短繊維が含まれ、ベルト幅方向に配向
している。尚、該短繊維はあらかじめトルエン90gに
PAPI(化成アップジョン社製ポリイソシアネート化
合物)90gからなる処理液に浸漬した。
Here, the compression portion and the cushion rubber portion are
Each was prepared from the rubber composition shown in Table 3, kneaded with a Banbury mixer, and then rolled with a calendar. The compressed portion contains short fibers and is oriented in the belt width direction. The short fibers were previously immersed in a treatment liquid consisting of 90 g of toluene and 90 g of PAPI (polyisocyanate compound manufactured by Kasei Upjohn Co., Ltd.).

【0028】[0028]

【表3】 [Table 3]

【0029】次いで、前記Vリブドベルトの静的および
動的性能の評価を行った。この結果を表4に示す。尚、
ベルトの試験方法は、以下の通りである。 (1)ベルトモジュラス ベルトから切り出した3リブの試料を250mmのチャ
ック間に設置し、引張速度50mm/分で引張り試験を
行い、250N/リブ時の伸びを測定し、荷重を伸び率
で除して求めた。
Next, the static and dynamic performances of the V-ribbed belt were evaluated. Table 4 shows the results. still,
The test method of the belt is as follows. (1) Belt modulus Three rib samples cut out from the belt were placed between 250 mm chucks, a tensile test was performed at a tensile speed of 50 mm / min, the elongation at 250 N / rib was measured, and the load was divided by the elongation rate. I asked.

【0030】(2)ベルト強力 前記(1)と同様の引張り試験を行い、引張り強力を測
定し、1リブ当たりの引張り強力を求めた。
(2) Belt Strength The same tensile test as in (1) above was conducted to measure the tensile strength, and the tensile strength per rib was determined.

【0031】(3)ベルトスリップ率 図2に示す走行試験機10のように、Vリブドベルト1
を駆動プーリ11(直径120mm)、従動プーリ12
(直径120mm)、テンションプーリ13(直径45
mm)に掛架し、雰囲気温度85°Cで走行させた。駆
動プーリ11の回転数は4,900rpm、従動プーリ
12の負荷は12PSとし、テンションプーリ13に8
5kgfの初張力をかけた。300時間走行後、スリッ
プ率を測定した。スリップ率(G)の算出は、下記の式
に示す。 スリップ率(G)=(I0 −I300 )/I0 I=NDn.0/NDr.0300 =NDn.300/NDr.300Dr.0 ;試験開始時の駆動プーリの回転数(rpm) NDn.0 ;試験開始時の従動プーリの回転数(rpm) NDr.300;300時間後の駆動プーリの回転数(rp
m) NDn.300;300時間後の従動プーリの回転数(rp
m)
(3) Belt slip ratio As in the running tester 10 shown in FIG.
Drive pulley 11 (diameter 120 mm), driven pulley 12
(Diameter 120 mm), tension pulley 13 (diameter 45
mm) and run at an ambient temperature of 85 ° C. The rotation speed of the drive pulley 11 is 4,900 rpm, the load of the driven pulley 12 is 12 PS, and the tension pulley 13 has 8
An initial tension of 5 kgf was applied. After running for 300 hours, the slip ratio was measured. The slip ratio (G) is calculated by the following formula. Slip ratio (G) = (I 0 −I 300 ) / I 0 I = N Dn.0 / N Dr.0 I 300 = N Dn.300 / N Dr.300 N Dr.0 ; drive pulley at the start of the test Rotation speed (rpm) N Dn.0 ; rotation speed of driven pulley at start of test (rpm) N Dr.300 ; rotation speed of drive pulley after 300 hours (rp)
m) N Dn.300 ; rotation speed of driven pulley after 300 hours (rp
m)

【0032】(4)ベルト表面温度 図2の試験機を用いて、300時間走行後のベルト表面
温度を測定した。
(4) Belt surface temperature Using the tester shown in FIG. 2, the belt surface temperature after running for 300 hours was measured.

【0033】(5)ベルト走行時間 図2の試験機を用いて、ベルトのリブにクラックが発生
するまでの時間を測定し、実施例1を100とする指数
で表示した。
(5) Belt running time Using the tester shown in FIG. 2, the time until cracks were generated in the ribs of the belt was measured, and the time was expressed as an index with Example 1 being 100.

【0034】[0034]

【表4】 [Table 4]

【0035】以上のように、本発明のVリブドベルト
は、従来のものに比べてリブのクラック発生までの時間
が長く、また他の静的および動的性能において優れてい
ることが判る。
As described above, it can be seen that the V-ribbed belt of the present invention has a longer time until the occurrence of rib cracks and is excellent in other static and dynamic performances as compared with the conventional one.

【0036】[0036]

【発明の効果】以上のように本発明のVリブドベルトで
は、心線としてエチレン−2,6−ナフタレートを主た
る構成単位とするポリエステル繊維フィラメント群を諸
撚してトータルデニール2,700〜3,300にした
接着処理コードを使用しているため、ベルトのモジュラ
スを低下させずにベルトを薄くすることができるばかり
か、ベルトの屈曲性も改善することができ、しかも心線
の巻き付けピッチを0.7〜1.0mmにすることで、
モジュラスの高い、またベルトの屈曲性も改善すること
ができる。
As described above, in the V-ribbed belt of the present invention, a total denier of 2,700 to 3,300 is obtained by twisting a polyester fiber filament group having ethylene-2,6-naphthalate as a main constituent unit as a core wire. Since the adhesive treatment cord is used, the belt can be made thinner without lowering the modulus of the belt, and the flexibility of the belt can be improved, and the winding pitch of the core wire can be reduced to 0. By setting it to 7-1.0 mm,
It has a high modulus and can also improve the flexibility of the belt.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係るVリブドベルトの断面斜視図であ
る。
FIG. 1 is a sectional perspective view of a V-ribbed belt according to the present invention.

【図2】Vリブドベルトの走行試験機の側面図である。FIG. 2 is a side view of a running tester for a V-ribbed belt.

【符号の説明】[Explanation of symbols]

1 Vリブドベルト 2 伸張部 3 カバー帆布 4 心線 5 クッションゴム部 6 圧縮部 7 リブ 1 V-ribbed belt 2 Extension part 3 Cover canvas 4 Core wire 5 Cushion rubber part 6 Compression part 7 Rib

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 伸張部と、ベルト長手方向に沿って心線
を埋設したクッションゴム部と、クッションゴム部に隣
接してベルトの周方向に延びる複数のリブを有する圧縮
部とからなるVリブドベルトにおいて、上記心線がエチ
レン−2,6−ナフタレートを主たる構成単位とするポ
リエステル繊維フィラメント群を諸撚してトータルデニ
ール2,700〜3,300にした接着処理コードであ
ることを特徴とするVリブドベルト。
1. A V-ribbed belt comprising an extension portion, a cushion rubber portion in which a cord is embedded along the belt longitudinal direction, and a compression portion having a plurality of ribs adjacent to the cushion rubber portion and extending in the circumferential direction of the belt. V is characterized in that the above-mentioned core wire is an adhesive treatment cord obtained by twisting a polyester fiber filament group mainly composed of ethylene-2,6-naphthalate into a total denier of 2,700 to 3,300. Ribbed belt.
【請求項2】 心線の巻き付けピッチが0.7〜1.0
mmである請求項1記載のVリブドベルト。
2. The winding pitch of the core wire is 0.7 to 1.0.
The V-ribbed belt according to claim 1, having a size of mm.
JP07125096A 1996-02-29 1996-02-29 V-ribbed belt Expired - Fee Related JP3190819B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP07125096A JP3190819B2 (en) 1996-02-29 1996-02-29 V-ribbed belt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP07125096A JP3190819B2 (en) 1996-02-29 1996-02-29 V-ribbed belt

Publications (2)

Publication Number Publication Date
JPH09236156A true JPH09236156A (en) 1997-09-09
JP3190819B2 JP3190819B2 (en) 2001-07-23

Family

ID=13455277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP07125096A Expired - Fee Related JP3190819B2 (en) 1996-02-29 1996-02-29 V-ribbed belt

Country Status (1)

Country Link
JP (1) JP3190819B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1046835A2 (en) 1999-04-21 2000-10-25 Bando Chemical Industries, Ltd. V-ribbed belt
JP2012167711A (en) * 2011-02-10 2012-09-06 Teijin Fibers Ltd Transmission belt

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1046835A2 (en) 1999-04-21 2000-10-25 Bando Chemical Industries, Ltd. V-ribbed belt
EP1046835A3 (en) * 1999-04-21 2000-12-27 Bando Chemical Industries, Ltd. V-ribbed belt
US6419605B1 (en) 1999-04-21 2002-07-16 Bando Chemical Industries, Ltd. V-ribbed belt
EP1367291A2 (en) 1999-04-21 2003-12-03 Bando Chemical Industries, Ltd. V-ribbed belt
EP1367290A2 (en) 1999-04-21 2003-12-03 Bando Chemical Industries, Ltd. V-ribbed belt
EP1367291A3 (en) * 1999-04-21 2006-05-03 Bando Chemical Industries, Ltd. V-ribbed belt
EP1367290A3 (en) * 1999-04-21 2006-05-03 Bando Chemical Industries, Ltd. V-ribbed belt
EP1757837A2 (en) 1999-04-21 2007-02-28 Bando Chemical Industries, Ltd. V-ribbed belt
EP1757837A3 (en) * 1999-04-21 2010-09-01 Bando Chemical Industries, Ltd. V-ribbed belt
JP2012167711A (en) * 2011-02-10 2012-09-06 Teijin Fibers Ltd Transmission belt

Also Published As

Publication number Publication date
JP3190819B2 (en) 2001-07-23

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