JPH07151191A - V-ribbed belt - Google Patents
V-ribbed beltInfo
- Publication number
- JPH07151191A JPH07151191A JP23841694A JP23841694A JPH07151191A JP H07151191 A JPH07151191 A JP H07151191A JP 23841694 A JP23841694 A JP 23841694A JP 23841694 A JP23841694 A JP 23841694A JP H07151191 A JPH07151191 A JP H07151191A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- rubber
- para
- short fibers
- layer
- 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]
【産業上の利用分野】この発明はＶリブドベルトに関
し、より詳しくは、プーリのＶ形リブ溝と嵌合するＶリ
ブドベルトの圧縮ゴム層を構成するＶ形リブ内にアラミ
ド短繊維を埋設した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 in which aramid short fibers are embedded in V-shaped ribs forming a compressed rubber layer of the V-ribbed belt that fits in the V-shaped rib groove of a pulley. Regarding
【０００２】[0002]
【従来の技術】Ｖリブドベルトは、動力伝動用Ｖベルト
に比べ、複数のＶ形リブの存在によるプーリとの接触面
積の拡大分だけ動力伝達力は増大する。このＶリブドベ
ルトは、複数のプーリを介して摩擦力によって動力を伝
達するが、その形状からして耐屈曲疲労性に富み、高出
力が得られるため、小プーリ径での使用や高速回転にも
十分用いられる。そのため、固定プーリによるベルトの
初期設定張力を高くして、その後の張力低下を防ぐこと
ができるが、この手段を採用した折、リブゴム粘着摩耗
による発音の問題や、走行時、ベルトおよびプーリに水
がかかるとベルトのスリップや発音の面で問題があっ
た。2. Description of the Related Art A V-ribbed belt has a power transmission force increased as compared with a power transmission V-belt by an increase in contact area with a pulley due to the presence of a plurality of V-shaped ribs. This V-ribbed belt transmits power by frictional force through a plurality of pulleys, but due to its shape, it has excellent bending fatigue resistance and high output, so it can be used with a small pulley diameter and high speed rotation. Used well. Therefore, it is possible to increase the initial tension of the belt by the fixed pulley to prevent the tension from decreasing thereafter. When it was applied, there was a problem in terms of belt slip and pronunciation.
【０００３】これらの問題を解決するために、例えば実
開平４−５５４７５号公報に開示されるように、研磨さ
れたＶ形リブ側面にタルク、炭酸カルシウム、クレー、
シリカなどのパウダー状の粘着抑制剤を付着させた動力
伝動ベルトが、また実開平５−５９０１２号公報に開示
されるように、ベルト圧縮層内にアラミド短繊維を埋設
せしめることにより耐摩耗性、耐側圧性、さらに発音抑
制を目的とした動力伝動用ベルトが提案されている。In order to solve these problems, for example, as disclosed in Japanese Utility Model Publication No. 4-55475, talc, calcium carbonate, clay,
A power transmission belt to which a powdery adhesion suppressant such as silica is adhered, and as disclosed in Japanese Utility Model Laid-Open No. 5-59012, wear resistance by embedding aramid short fibers in a belt compression layer, Power transmission belts have been proposed for the purpose of lateral pressure resistance and suppression of sound production.
【０００４】[0004]
【発明が解決しようとする課題】上記ベルトの発音、ス
リップ抑制を目的として粘着抑制剤をＶ形リブ側面に付
着せしめた場合、粘着抑制剤の付着が、どうしても不均
一となる点で問題があり、またベルトの圧縮層部に耐摩
耗性、耐側圧性に優れたアラミド短繊維を埋設した場
合、アラミド繊維は剛性が高過ぎることが災してベルト
走行時、耳ざわりな擦過音（こすれ音）が発生する。前
記実開平５−５９０１２号公報記載の発明は、この点圧
縮層の先端部寄り部分にフィブリル化しやすいパラ系ア
ラミド短繊維を、また圧縮層の基礎部寄り部分にフィブ
リル化しにくいメタ系アラミド短繊維をそれぞれ圧縮層
の場所を区分して使い分けている。しかしこのことは構
成が複雑化し、圧縮層の基礎部寄りに埋設したフィブリ
ル化しにくいメタ系アラミド短繊維が突出し、リブ溝が
この突出短繊維にて埋まり易く、その結果プーリとの嵌
合が悪くなり、ベルトがプーリより離脱しやすくなる危
惧がある。またこのメタ系アラミド短繊維は突出量が長
く、必要以上にベルト走行時スリップが発生しやすい。When the tack suppressor is adhered to the side surface of the V-shaped rib for the purpose of suppressing the sound and slip of the belt, there is a problem in that the adherence of the tack suppressor is nonuniform. In addition, when aramid short fibers with excellent wear resistance and lateral pressure resistance are embedded in the compression layer of the belt, the aramid fibers have too high rigidity, which causes a rasping noise (rubbing noise) when the belt is running. Occurs. The invention described in Japanese Utility Model Application Laid-Open No. 5-59012 discloses a para-aramid short fiber that is easily fibrillated in a portion near the tip of the point compression layer, and a meta-aramid short fiber that is difficult to be fibrillated in a portion near the base of the compression layer. The location of the compression layer is divided and used separately. However, this complicates the structure, and the meta-aramid short fibers that are buried near the base of the compression layer and are difficult to fibril project, and the rib grooves are easily filled with these short protruding fibers, resulting in poor fitting with the pulley. There is a danger that the belt will come off the pulley more easily. In addition, this meta-aramid short fiber has a long protrusion amount, and slip is more likely to occur during belt running than necessary.
【０００５】また圧縮層の先端寄りに埋設したパラ系ア
ラミド短繊維はスリップ防止、さらに発音抑制効果等に
おいて効果を発揮しうるも、反面同短繊維が保有する剛
性は、同短繊維のゴム圧縮層への埋設量によっては、短
繊維とゴムとの間に時間の経過と共に剥離現象の発生が
あり、Ｖ形リブ部の形崩れはベルト自体の耐久性を大き
く劣化せしめる結果となる。Further, the para-aramid short fibers embedded near the tip of the compression layer can be effective in preventing slippage and suppressing the sound generation, but on the other hand, the rigidity possessed by the short fibers is the rubber compression of the short fibers. Depending on the amount of embedding in the layer, a peeling phenomenon may occur between the short fibers and the rubber with the passage of time, and the shape collapse of the V-shaped rib portion may result in a great deterioration of the durability of the belt itself.
【０００６】この発明は、上述の問題点を解決するため
に、種々検討を加え、ＶリブドベルトのＶ形リブ層内に
埋設された特定の短繊維、即ちパラ系アラミド短繊維の
埋設量の制御および埋設短繊維の形態変化により、耐注
水時におけるスリップ防止および耐高張力時における発
音防止の面で顕著な効果があり、さらに埋設量の制御に
より、ベルトの硬度の上昇に伴う、ベルトの耐久性の低
下面にても、ベルトの性能を十分持続せしめ得るＶリブ
ドベルトを提供することを目的とする。In order to solve the above-mentioned problems, the present invention makes various studies and controls the amount of specific short fibers embedded in the V-shaped rib layer of the V-ribbed belt, that is, para-aramid short fibers. By changing the morphology of the embedded short fibers, there is a significant effect in terms of preventing slippage when water is poured and preventing sound generation when high tension is used.In addition, controlling the amount of embedding contributes to belt durability as the hardness of the belt increases. It is an object of the present invention to provide a V-ribbed belt which can sufficiently maintain the performance of the belt even in the aspect of deterioration of the property.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、この発明に係るＶリブドベルトは、接着ゴム層内に
ベルト長手方向に沿って心線を埋設した抗張体層、該抗
張体層上面に貼着された１〜複数枚のゴム付帆布よりな
る引張層、および前記抗張体層下面に短繊維をベルト横
方向に配向埋設したベルト長手方向に延びる複数のＶ形
リブをもって構成された圧縮ゴム層とからなるＶリブド
ベルトにおいて、該圧縮ゴム層中の短繊維は少なくとも
その一部が、ゴム１００重量部に対し、５〜２０重量部
のパラ系アラミド繊維でもって構成され、Ｖ形リブ側面
より突出する前記アラミド短繊維はフィブリル化してい
ることを特徴とする。In order to achieve the above object, a V-ribbed belt according to the present invention is a tension layer in which a core wire is embedded in an adhesive rubber layer along the longitudinal direction of the belt. Consists of a tensile layer made of one or a plurality of rubber-attached cloths attached to the upper surface of the layer, and a plurality of V-shaped ribs extending in the belt longitudinal direction in which short fibers are oriented and embedded in the lateral direction of the belt on the lower surface of the tensile body layer. In the V-ribbed belt including the compressed rubber layer, at least a part of the short fibers in the compressed rubber layer is composed of 5 to 20 parts by weight of para-aramid fiber with respect to 100 parts by weight of rubber. The aramid short fibers protruding from the side surface of the shaped rib are fibrillated.
【０００８】[0008]
【実施例】次に、本発明に係るＶリブドベルトについ
て、図面を用いて具体的に説明する。まず、本発明のＶ
リブドベルトに関し、図１は本発明に係るＶリブドベル
トの一部の斜視図、図２はＶ形リブ側面よりその一部を
突出したパラ系アラミド短繊維の正面図、図３はパラ系
アラミド繊維を埋設したＶ形リブ側面部分の走査型電子
顕微鏡写真の模写図である。EXAMPLE A V-ribbed belt according to the present invention will be described in detail with reference to the drawings. First, V of the present invention
Regarding the ribbed belt, FIG. 1 is a perspective view of a part of a V-ribbed belt according to the present invention, FIG. 2 is a front view of a para-aramid short fiber having a part thereof protruding from a side surface of a V-shaped rib, and FIG. It is a copying figure of the scanning electron microscope photograph of the side surface part of the embedded V-shaped rib.
【０００９】Ｖリブドベルト１は、クロロプレンゴム、
水素化ニトリルゴム、ＣＳＭゴム、天然ゴム、ＳＢＲゴ
ム、ブタジエンゴムなどからなる接着ゴム層２内にベル
ト長さ方向に沿ってポリエステル、ナイロン、アラミド
繊維等の低伸度高強力の心線３が埋設された抗張体層が
形成され、該抗張体層の上面には経緯綿糸または綿糸と
合成繊維糸との混紡糸で織成された伸縮性を有する１乃
至複数枚のゴム付帆布４をその伸縮方向をベルト長手方
向に一致せしめて貼着せしめて引張層が形成されてい
る。The V-ribbed belt 1 is made of chloroprene rubber,
In the adhesive rubber layer 2 made of hydrogenated nitrile rubber, CSM rubber, natural rubber, SBR rubber, butadiene rubber, etc., a low-elongation, high-strength core wire 3 of polyester, nylon, aramid fiber or the like is provided along the belt length direction. An embedded tensile body layer is formed, and on the upper surface of the tensile body layer, one or a plurality of elastic canvases 4 woven with warp and weft yarns or a mixed yarn of cotton yarns and synthetic fiber yarns and having elasticity The tensile layer is formed by adhering the sheet with its stretching direction aligned with the longitudinal direction of the belt.
【００１０】一方、抗張体層の下面には、該抗張体層を
形成する接着ゴム２と同材質のゴムからなる圧縮ゴム層
５が形成され、該圧縮ゴム層５はベルト長さ方向にのび
る複数本の摩擦伝動部たるゴム製Ｖ形リブ６をもって形
成されている。On the other hand, on the lower surface of the tensile body layer, a compressed rubber layer 5 made of the same material as the adhesive rubber 2 forming the tensile body layer is formed, and the compressed rubber layer 5 is in the belt length direction. It is formed by a plurality of rubber V-shaped ribs 6 which are friction transmission portions extending to the inside.
【００１１】このＶ形リブ６内には、本発明の特徴であ
る短繊維、具体的にはトアロン、ケブラー（商品名）等
のパラ系アラミド繊維糸単独、あるいはこのパラ系アラ
ミド繊維糸とナイロン、ビニロン、ポリエステルなどの
モノフィラメントからなる合成繊維糸あるいは綿、パル
プなどの天然繊維糸との混合糸で、これら繊維糸の２〜
６ｍｍ長さにカットされた短繊維７が、ゴム１００重量
部に対し５〜２０重量部、好ましくは８〜１５重量部が
ベルト横方向に配向埋設されている。尚、パラ系アラミ
ド繊維と他の繊維との混合割合の場合は、パラ系アラミ
ド繊維１に対し、他の繊維は１〜５倍の範囲内に納める
ことが望ましい。In the V-shaped ribs 6, short fibers which are the feature of the present invention, specifically, para-aramid fiber yarns such as Toaron and Kevlar (trade name) alone, or this para-aramid fiber yarn and nylon are used. Synthetic fiber yarn consisting of monofilament such as vinylon, polyester or natural fiber yarn such as cotton or pulp.
The short fibers 7 cut to a length of 6 mm are embedded in the lateral direction of the belt in an amount of 5 to 20 parts by weight, preferably 8 to 15 parts by weight, per 100 parts by weight of rubber. In the case of the mixing ratio of the para-aramid fiber and the other fiber, it is desirable that the other fiber is contained within the range of 1 to 5 times the para-aramid fiber 1.
【００１２】ゴム１００重量部に対し、このパラ系アラ
ミド繊維のゴム層中への埋設量が５重量部以下の場合、
短繊維のＶ形リブ側面よりの突出量が少なすぎ、ベルト
の耐久性には問題ないが、耐注水時におけるスリップ防
止および耐高張力時における発音防止の面で十分な効果
を発揮することができない。一方、上記短繊維の埋設量
が２０重量部以上となると同じくスリップ防止、発音防
止の面では効果はあるが、パラ系アラミド繊維の剛性が
高すぎるため、短繊維とゴムの界面で剥離が発生し、こ
れがＶ形リブ部における早期亀裂発生につながる。When the embedding amount of the para-aramid fiber in the rubber layer is 5 parts by weight or less based on 100 parts by weight of rubber,
The amount of the short fibers protruding from the side of the V-shaped rib is too small, so there is no problem in the durability of the belt, but it is possible to exert a sufficient effect in terms of preventing slippage during water proofing and sounding prevention during high tensile strength. Can not. On the other hand, when the embedding amount of the above short fibers is 20 parts by weight or more, it is also effective in terms of slip prevention and sound generation, but since the rigidity of the para-aramid fiber is too high, peeling occurs at the interface between the short fibers and the rubber. However, this leads to early crack generation in the V-shaped rib portion.
【００１３】Ｖ形リブ部の研磨成形は、この短繊維入り
のベルト圧縮部５に対して、グラインダー表面に８０〜
２００メッシュのダイヤモンドが装着された乾式のグラ
インダーホイールを用いて、Ｖリブ形状の研磨成形作業
が実行される。このパラ系アラミド繊維は、その正式名
はポリパラフェニレンテレフタルアミドで、モノフィラ
メントの長さが２〜６ｍｍ、そしてその径は９〜１８μ
ｍである。The V-shaped rib portion is polished by 80 to 80 mm on the surface of the grinder with respect to the belt compression portion 5 containing the short fibers.
A V-ribbed polishing operation is performed using a dry grinder wheel fitted with 200 mesh diamond. The official name of this para-aramid fiber is polyparaphenylene terephthalamide, the length of monofilament is 2-6 mm, and its diameter is 9-18μ.
m.
【００１４】前記乾式のグラインダーを用いて研磨する
ことにより、図２及び図３に示すように、ゴム１００重
量部に対し、パラ系アラミド短繊維８重量部を埋設せし
めたＶ形リブ部の側面より突出したパラ系アラミド繊維
の一部はフィブリル化８した状態を呈している。このパ
ラ系アラミド繊維にあって顕著に派生するフィブリル化
８とは、Ｖ形リブの側面より突出した短繊維のフィラメ
ントが、長さ方向に裂かれて、細分化された状態をい
い、このフィブリル化した突出部分の長さは０．５ｍｍ
以下で、かつフィブリル化部分の太さは、Ｖ形リブ内に
埋設されたフィラメントの太さの１／２〜１／８で、フ
ィラメントのフィブリル化部分の少なくともその一部は
カール状態にある。By polishing with the dry grinder, as shown in FIG. 2 and FIG. 3, the side surface of the V-shaped rib portion in which 8 parts by weight of para-aramid short fiber is embedded in 100 parts by weight of rubber. Some of the more protruding para-aramid fibers are in a fibrillated state. The fibrillation 8 that is significantly derived from this para-aramid fiber is a state in which filaments of short fibers protruding from the side surface of the V-shaped rib are split in the lengthwise direction, and the filaments are subdivided. The length of the protruding part is 0.5 mm
Below, and the thickness of the fibrillated portion is 1/2 to 1/8 of the thickness of the filament embedded in the V-shaped rib, and at least a part of the fibrillated portion of the filament is in a curled state.
【００１５】なお、比較資料として提示した図８は、図
３に示すパラ系アラミド短繊維と同量の、即ちゴム１０
０重量部に対し、８重量部のメタ系アラミド短繊維（正
式名はポリメタフェニレンイソフタルアミド）を埋設せ
しめた折の図３に相当する図であるが、メタ系アラミド
短繊維には期待するフィブリル化は認められない。この
パラ系アラミド短繊維のフィブリル化部分の存在によ
り、耐注水時におけるスリップ防止および耐高張力時に
おける発音抑止の面で顕著な効果が認められた。Incidentally, FIG. 8 presented as a comparative material has the same amount as the para-aramid short fibers shown in FIG.
8 parts by weight to 0 parts by weight of meta-aramid short fibers (official name: polymetaphenylene isophthalamide) is embedded in the figure, which corresponds to FIG. 3, but expects meta-aramid short fibers. No fibrillation is observed. Due to the presence of the fibrillated portion of the para-aramid short fibers, a remarkable effect was observed in terms of preventing slippage during water injection and suppressing sound generation during high tension resistance.
【００１６】次に本発明の適確なる効果を開示するため
の高張力発音試験、２％スリップ時のベルト張力試験お
よびベルト耐久試験の各試験について説明する。Next, the high tension sounding test, the belt tension test at the time of 2% slip, and the belt endurance test will be described in order to disclose the proper effect of the present invention.
【００１７】〔高張力発音試験〕図４に示すごとく、径
１６７．９ｍｍの駆動プーリ（Ｄｒ）と径７２．０ｍｍ
の従動プーリ（Ｄｎ）間にパラ系アラミド短繊維を８お
よび１２重量部それぞれ配合した本発明を実施したベル
トと、パラ系アラミド短繊維を４重量部配合したベルト
およびメタ系アラミド短繊維、例えばコーネックス（商
品名）を８重量部配合した計４種類のベルト（５ＰＫ１
１０４）を掛架し、ベルト張力３３ｋｇｆ／リブ下に
て、まず粘着発生加速テストにあっては、駆動プーリ
（Ｄｒ）：２０００ｒｐｍ、従動プーリ（Ｄｎ）：トル
ク１．２５ｋｇｆｍ下にて３０分間の走行により、なら
し運転を行い、その後発音試験を実施した。この発音テ
ストにあっては、駆動プーリ（Ｄｒ）：６００ｒｐｍ、
従動プーリ（Ｄｎ）：無負荷状態にて実施した。その試
験結果を、下記の表１に示す。[High Tension Pronunciation Test] As shown in FIG. 4, a drive pulley (Dr) having a diameter of 167.9 mm and a diameter of 72.0 mm
The belt according to the present invention in which 8 and 12 parts by weight of para-aramid short fibers are mixed between the driven pulleys (Dn), and the belt and meta-aramid short fibers in which 4 parts by weight of para-aramid short fibers are mixed, for example, A total of 4 types of belts (5PK1) containing 8 parts by weight of Conex (trade name)
104) is hung and the belt tension is 33 kgf / rib. First, in the adhesion generation acceleration test, in the driving pulley (Dr): 2000 rpm, the driven pulley (Dn): torque 1.25 kgfm for 30 minutes. By running, a break-in operation was performed, and then a pronunciation test was conducted. In this pronunciation test, drive pulley (Dr): 600 rpm,
Driven pulley (Dn): It was carried out under no load condition. The test results are shown in Table 1 below.
【００１８】[0018]
【表１】 [Table 1]
【００１９】この結果より本発明を実施したベルトはパ
ラ系アラミド短繊維４重量部配合のベルトに比較し、ベ
ルト張力を変化させても発音はなく良好な結果が得られ
た。From these results, the belt of the present invention was good in comparison with the belt containing 4 parts by weight of the para-aramid short fiber and no noise was produced even when the belt tension was changed.
【００２０】（２％スリップ時のベルト張力試験）図５
に示す如く、径１２０ｍｍの駆動プーリ（Ｄｒ）と従動
プーリ（Ｄｎ）および径４５ｍｍのテンションプーリ
（Ｄｔ）をもって構成された補機駆動装置に、前記パラ
系アラミド短繊維の３本のベルトとメタ系アラミド短繊
維を配合埋設したベルトの計４種類のベルト（３ＰＫ１
１００）を順次装架しテンションプーリ（Ｄｔ）の巻き
付け角度が９０°で、かつ駆動プーリ（Ｄｒ）の直前部
に注水量１００ｍｌ／ｍｉｎでベルトに注水した状態で
駆動プーリ（Ｄｒ）の回転速度を変化させ２％スリップ
を生じせしめたときのベルト張力を測定した。その結果
を図６のグラフに示す。(Belt tension test at 2% slip) FIG. 5
As shown in FIG. 3, an auxiliary machine drive device composed of a drive pulley (Dr) with a diameter of 120 mm, a driven pulley (Dn) and a tension pulley (Dt) with a diameter of 45 mm was used, and three belts of the para-aramid short fiber and a meta-fiber were used. 4 types of belts (3PK1)
100) are sequentially mounted, the winding angle of the tension pulley (Dt) is 90 °, and the rotation speed of the drive pulley (Dr) is in a state where water is injected into the belt immediately before the drive pulley (Dr) at a water injection amount of 100 ml / min. Was changed to cause 2% slip, and the belt tension was measured. The result is shown in the graph of FIG.
【００２１】この結果より本発明のベルトは従来のベル
トに比べ低いベルト張力でもスリップしにくいことが確
認出来た。From these results, it was confirmed that the belt of the present invention is less likely to slip than the conventional belt even with a low belt tension.
【００２２】（ベルト耐久試験）次に、図７に示す径１
２０ｍｍの駆動プーリ（Ｄｒ）と従動プーリ（Ｄｎ）お
よび径５５ｍｍのテンションプーリ（Ｄｔ）間に順次前
記４本のベルト（３ＰＫ１１００）を装着し、雰囲気温
度１００℃、従動プーリ（Ｄｎ）の負荷１１ｐｓ、ベル
ト張力５０ｋｇｆ／３ＰＫになるようにテンションプー
リ（Ｄｔ）を調節し、駆動プーリ（Ｄｒ）を４９００ｒ
ｐｍの回転速度をもって走行せしめた折の耐久力を測定
した。その結果を表２に示す。(Belt durability test) Next, the diameter 1 shown in FIG.
The four belts (3PK1100) were sequentially mounted between a 20 mm driving pulley (Dr), a driven pulley (Dn) and a 55 mm diameter tension pulley (Dt), the ambient temperature was 100 ° C., and the driven pulley (Dn) load was 11 ps. , Adjust the tension pulley (Dt) so that the belt tension is 50 kgf / 3 PK, and set the drive pulley (Dr) to 4900r.
The endurance of the folded piece was measured at a rotational speed of pm. The results are shown in Table 2.
【００２３】[0023]
【表２】 [Table 2]
【００２４】この結果から明らかなように本発明を実施
したベルトは他のベルトとの比較において、耐久力が７
０〜９０％とやや劣っている事が判明した。しかし、こ
の程度の耐久性の低下はベルトの実際使用において決定
的な障害とはならない。As is clear from these results, the belt of the present invention has a durability of 7 in comparison with other belts.
It was found to be slightly inferior with 0 to 90%. However, such a decrease in durability is not a decisive obstacle in practical use of the belt.
【００２５】[0025]
【発明の効果】この発明を実施したＶリブドベルトは、
圧縮部を形成するＶ形リブ中に横方向に配向埋設された
短繊維が、少なくともその一部がパラ系アラミド繊維で
あって、かつゴム１００重量部に対し、パラ系アラミド
短繊維を５〜２０重量部埋設せしめ、乾式グラインダー
で研磨せしめてＶ形リブ側面に、アラミド繊維をフィブ
リル化して突出させることにより、耐注水時におけるス
リップおよび耐高張力時における発音性を大幅に減少せ
しめることができた。更に、本発明を実施したベルトは
耐久性の面でやや劣る結果となったが、この点はベルト
の実際の使用面を大きい障害とはならず、低いベルト張
力下でもスリップの発生が少なく、その分ベルトの張力
をベルト疲労が生じる程に高める必要もなく、十分ベル
トの動力伝達力を確保することができた。The V-ribbed belt embodying the present invention is
The short fibers laterally oriented and embedded in the V-shaped ribs forming the compressed portion are at least a part of para-aramid fibers, and the para-aramid short fibers are added to 5 to 100 parts by weight of the rubber. By embedding 20 parts by weight, polishing with a dry grinder, and fibrillating the aramid fiber on the side of the V-shaped rib to project it, it is possible to significantly reduce the slip during water injection and the pronunciation during high tension. It was Further, although the belt in which the present invention is carried out has a slightly inferior result in terms of durability, this point does not significantly impair the actual use surface of the belt, and the occurrence of slip is small even under a low belt tension, It was not necessary to increase the tension of the belt to the extent that belt fatigue occurred, and the power transmission force of the belt could be sufficiently secured.
【図１】本発明に係るＶリブドベルトの部分斜視図であ
る。FIG. 1 is a partial perspective view of a V-ribbed belt according to the present invention.
【図２】Ｖ形リブ部より突出した一本のパラ系アラミド
短繊維の正面図である。FIG. 2 is a front view of one para-aramid short fiber protruding from a V-shaped rib portion.
【図３】図１に示すＶ形リブ側面一部の走査型電子顕微
鏡写真の模写図である。FIG. 3 is a copy of a scanning electron microscope photograph of a part of the side surface of the V-shaped rib shown in FIG.
【図４】高張力発音試験装置の概略説明図である。FIG. 4 is a schematic explanatory diagram of a high-tension sound production testing device.
【図５】注水時の動力伝達馬力試験装置の概略説明図で
ある。FIG. 5 is a schematic explanatory view of a power transmission horsepower test device during water injection.
【図６】駆動プーリの回転数とベルト張力の関係を示す
グラフである。FIG. 6 is a graph showing the relationship between the rotational speed of a drive pulley and belt tension.
【図７】ベルトの高温高速耐久試験装置の概略説明図で
ある。FIG. 7 is a schematic explanatory view of a belt high-temperature high-speed durability test apparatus.
【図８】メタ系アラミド短繊維埋設のＶリブドベルトに
おける図３に相当する図である。FIG. 8 is a view corresponding to FIG. 3 in a V-ribbed belt with embedded meta-aramid short fibers.
１ Ｖリブドベルト ２ 接着ゴム層 ３ 心線 ４ ゴム付帆布 ５ 圧縮ゴム層 ６ Ｖ形リブ ７ 短繊維 ８ フィブリル化部分 1 V-ribbed belt 2 Adhesive rubber layer 3 Core wire 4 Canvas with rubber 5 Compressed rubber layer 6 V-shaped rib 7 Short fiber 8 Fibrilated part
Claims (5)
心線を埋設した抗張体層、該抗張体層上面に貼着した少
なくとも一枚のゴム付帆布からなる引張層、および前記
抗張体層下面に、短繊維をベルト横方向に配向埋設し
た、ベルト長手方向に延びる複数のＶ形リブをもって構
成される圧縮ゴム層とからなるＶリブドベルトにおい
て、該圧縮ゴム層を構成するＶ形リブ中の短繊維は、少
なくともその一部が、ゴム１００重量部に対し、５〜２
０重量部のパラ系アラミド繊維であって、Ｖ形リブの側
面に突出する前記短繊維はフィブリル化していることを
特徴とするＶリブドベルト。1. A tensile body layer in which a core wire is embedded in an adhesive rubber layer along a longitudinal direction of a belt, a tensile layer made of at least one canvas with rubber attached to the upper surface of the tensile body layer, and In a V-ribbed belt comprising a compression rubber layer having a plurality of V-shaped ribs extending in the belt longitudinal direction in which short fibers are oriented and embedded in the lower surface of the tensile body layer, the V constituting the compression rubber layer is formed. At least a part of the short fibers in the shaped rib is 5 to 2 with respect to 100 parts by weight of rubber.
A V-ribbed belt comprising 0 parts by weight of a para-aramid fiber, wherein the short fibers protruding from the side surface of the V-shaped rib are fibrillated.
ある請求項１記載のＶリブドベルト。2. The V-ribbed belt according to claim 1, wherein all the embedded short fibers are para-aramid fibers.
又は天然繊維との混合繊維である請求項１記載のＶリブ
ドベルト。3. The V-ribbed belt according to claim 1, wherein the embedded short fibers are mixed fibers of para-aramid fibers and synthetic or natural fibers.
６ｍｍのモノフィラメントで、かつその径が９〜１８μ
ｍである請求項１乃至３記載のうちいずれか１項記載の
Ｖリブドベルト。4. The para-aramid fiber has a length of 2 to 2.
6mm monofilament with a diameter of 9-18μ
The V-ribbed belt according to any one of claims 1 to 3, wherein m is m.
ド繊維のフィブリル化した部分のフィラメントの太さ
は、Ｖ形リブ内に埋設状態にあるフィラメントの太さの
１／８〜１／２に細分化されている請求項１乃至４のう
ちいずれか１項に記載のＶリブドベルト。5. The thickness of the filament of the fibrillated portion of the para-aramid fiber protruding from the side surface of the V-shaped rib is 1/8 to 1/2 of the thickness of the filament embedded in the V-shaped rib. The V-ribbed belt according to any one of claims 1 to 4, which is subdivided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23841694A JPH07151191A (en) | 1993-10-06 | 1994-09-05 | V-ribbed belt |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27610393 | 1993-10-06 | ||
| JP5-276103 | 1993-10-06 | ||
| JP23841694A JPH07151191A (en) | 1993-10-06 | 1994-09-05 | V-ribbed belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07151191A true JPH07151191A (en) | 1995-06-13 |
Family
ID=26533679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23841694A Pending JPH07151191A (en) | 1993-10-06 | 1994-09-05 | V-ribbed belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07151191A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6432013B1 (en) | 1999-05-24 | 2002-08-13 | Bando Chemical Industries, Ltd. | Power transmission belt and method for fabricating the same |
| US6435997B1 (en) | 1999-05-24 | 2002-08-20 | Bando Chemical Industries, Ltd. | Power transmission belt and method for fabricating the same |
| US6482118B1 (en) | 1999-05-24 | 2002-11-19 | Bando Chemical Industries, Ltd. | Power transmission belt and method for fabricating the same |
| JP2008032073A (en) * | 2006-07-27 | 2008-02-14 | Teijin Fibers Ltd | Transmission belt |
| DE112008001999T5 (en) | 2007-07-26 | 2010-06-24 | Bando Chemical Industries, Ltd., Kobe-shi | V-ribbed belts |
| DE112009004597T5 (en) | 2009-03-26 | 2012-05-24 | Bando Chemical Industries, Ltd. | Friction transmission belt |
| WO2017110790A1 (en) | 2015-12-22 | 2017-06-29 | 三ツ星ベルト株式会社 | Friction-transmission belt and method for manufacturing same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03219147A (en) * | 1989-11-20 | 1991-09-26 | Mitsuboshi Belting Ltd | V ribbed belt and manufacture thereof |
| JPH058294A (en) * | 1991-02-01 | 1993-01-19 | Bando Chem Ind Ltd | Manufacture of short fiber-containing rubber structure |
-
1994
- 1994-09-05 JP JP23841694A patent/JPH07151191A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03219147A (en) * | 1989-11-20 | 1991-09-26 | Mitsuboshi Belting Ltd | V ribbed belt and manufacture thereof |
| JPH058294A (en) * | 1991-02-01 | 1993-01-19 | Bando Chem Ind Ltd | Manufacture of short fiber-containing rubber structure |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6432013B1 (en) | 1999-05-24 | 2002-08-13 | Bando Chemical Industries, Ltd. | Power transmission belt and method for fabricating the same |
| US6435997B1 (en) | 1999-05-24 | 2002-08-20 | Bando Chemical Industries, Ltd. | Power transmission belt and method for fabricating the same |
| US6482118B1 (en) | 1999-05-24 | 2002-11-19 | Bando Chemical Industries, Ltd. | Power transmission belt and method for fabricating the same |
| US6679962B2 (en) | 1999-05-24 | 2004-01-20 | Bando Chemical Industries, Ltd. | Method for fabricating power transmission belt including grinding with specified grinding wheel |
| US6695735B2 (en) | 1999-05-24 | 2004-02-24 | Bando Chemical Industries, Ltd. | Power transmission belt and method for fabricating the same |
| US6764382B2 (en) | 1999-05-24 | 2004-07-20 | Bando Chemical Industries, Ltd | Power transmission belt and method for fabricating the same |
| JP2008032073A (en) * | 2006-07-27 | 2008-02-14 | Teijin Fibers Ltd | Transmission belt |
| DE112008001999T5 (en) | 2007-07-26 | 2010-06-24 | Bando Chemical Industries, Ltd., Kobe-shi | V-ribbed belts |
| DE112009004597T5 (en) | 2009-03-26 | 2012-05-24 | Bando Chemical Industries, Ltd. | Friction transmission belt |
| US8979692B2 (en) | 2009-03-26 | 2015-03-17 | Bando Chemical Industries, Ltd. | Friction transmission belt |
| WO2017110790A1 (en) | 2015-12-22 | 2017-06-29 | 三ツ星ベルト株式会社 | Friction-transmission belt and method for manufacturing same |
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