JPH0564255B2 - - Google Patents
Info
- Publication number
- JPH0564255B2 JPH0564255B2 JP25333685A JP25333685A JPH0564255B2 JP H0564255 B2 JPH0564255 B2 JP H0564255B2 JP 25333685 A JP25333685 A JP 25333685A JP 25333685 A JP25333685 A JP 25333685A JP H0564255 B2 JPH0564255 B2 JP H0564255B2
- Authority
- JP
- Japan
- Prior art keywords
- short fibers
- belt
- ribbed belt
- section
- shaped cross
- 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.)
- Expired - Fee Related
Links
- 239000000835 fiber Substances 0.000 claims description 33
- 238000009826 distribution Methods 0.000 claims description 17
- 238000000227 grinding Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000010068 moulding (rubber) Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000002861 polymer material Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 description 12
- 239000010410 layer Substances 0.000 description 11
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、Ｖリブドベルト及びその製法に関
し、詳しくは改良されたＶリブドベルト及びその
製法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a V-ribbed belt and a method for manufacturing the same, and more particularly to an improved V-ribbed belt and a method for manufacturing the same.
従来、伝動ベルトとして、無端ベルトの内面に
円周方向に複数本の断面Ｖ字状をなす突条（以下
「Ｖリブ」という）を設けて成るＶリブドベルト
が広く使用されている。
2. Description of the Related Art Conventionally, V-ribbed belts, which are formed by providing an endless belt with a plurality of protrusions having a V-shaped cross section (hereinafter referred to as "V ribs") on the inner surface of an endless belt, have been widely used as power transmission belts.
このＶリブドベルトは、あたかも多数本のＶベ
ルトを同時に並行に巻掛けたのと同等の効果を有
するから、伝動効率が良くしかも複数本のＶベル
トを巻掛けた場合に比し保守管理も容易であり、
特に小型伝動装置に適すると言つた利点を有す
る。 This V-ribbed belt has the same effect as if multiple V-belts were wrapped in parallel at the same time, so it has good transmission efficiency and is easier to maintain than when multiple V-belts are wrapped around. can be,
It has the advantage of being particularly suitable for small-sized transmissions.
しかしながら、上記Ｖリブドベルトは、プーリ
との係合時、Ｖリブ間の溝内の空気がプーリ表面
との間の狭い空間に閉じ込められるから、Ｖリブ
ドベルトとプーリとの接触界面に水分等が介入す
ると、スムースに排出されずスリツプを生じさせ
同時に異音を発生させるといつた問題がある。
However, when the V-ribbed belt is engaged with the pulley, the air in the groove between the V-ribs is trapped in the narrow space between the pulley surface and moisture, etc., entering the contact interface between the V-ribbed belt and the pulley. However, there is a problem that it is not ejected smoothly, causing slippage and at the same time generating abnormal noise.
特に、Ｖリブドベルト表面がプーリとの接触に
より摩耗し平滑面となるに従い上記問題は顕著と
なり種々の問題を生じる。 In particular, as the surface of the V-ribbed belt wears down due to contact with the pulleys and becomes a smooth surface, the above problem becomes more pronounced and various problems occur.
例えば、上記のＶリブドベルトを自動車の補機
用伝動ベルトに使用した場合、ベルト表面に内外
気温差によつて結露等が生じると、これがスリツ
プ及び異音発生の原因となり運転者に故障発生の
不安感を抱かせることがある問題があつた。 For example, when the above-mentioned V-ribbed belt is used as a power transmission belt for an automobile's auxiliary equipment, if condensation occurs on the belt surface due to temperature differences between the inside and outside, this will cause slippage and abnormal noise, making the driver worried about malfunctions. I came across a problem that made me feel a little nervous.
かかる問題は、例えばＶリブ側面を荒い仕上げ
面とし、Ｖリブ側面に微小な凸凹を付することに
より介在する空気水分等を逃がしやすくすること
等が考えられるが、Ｖリブ表面が摩耗してしまえ
ば結局無効となり、しかもかかる荒仕上面とした
場合、Ｖリブ間の溝底面の精密な曲面仕上加工が
出来ないので、Ｖリブ間の溝断面形状が充分に規
制された形状とし難く、プーリとの係合時プーリ
の溝間の山頂部とＶリブドベルトのＶリブ間の谷
部底面とが接触し、伝動能力を低下させると共に
谷部の異常摩耗を生じさせるといつた問題があつ
た。 This problem can be solved by, for example, making the side surfaces of the V ribs rough and having minute irregularities on the side surfaces of the V ribs to make it easier for intervening air moisture to escape, but this may cause the V rib surfaces to wear out. Moreover, if such a rough finished surface is used, the bottom surface of the groove between the V-ribs cannot be precisely curved, making it difficult to form a well-regulated cross-sectional shape of the groove between the V-ribs. When engaged, the tops of the ridges between the grooves of the pulley and the bottoms of the troughs between the V-ribs of the V-ribbed belt come into contact with each other, reducing the transmission ability and causing abnormal wear of the troughs.
この発明は上記問題に鑑み、Ｖリブドベルトの
Ｖリブ側面の摩耗により生じる種々の欠点を解消
し得ると同時に、溝付プーリとの係合も安定して
行えるＶリブドベルト及びその製法を提供するこ
とを目的としてなさたものである。
In view of the above problems, it is an object of the present invention to provide a V-ribbed belt that can eliminate various defects caused by wear on the V-rib side surfaces of the V-ribbed belt, and at the same time can stably engage a grooved pulley, and a method for manufacturing the same. It was done for a purpose.
即ち、この発明のＶリブドベルトは、無端ベル
ト内面の円周方向に断面Ｖ字状をなす複数本の突
条が並設され、該突条を溝付プーリに係合させて
巻掛けられるＶリブドベルトにおいて、Ｖリブド
ベルトの断面Ｖ字状をなす突状の側面に短繊維の
一部が露出されており、かつ、短繊維の平均露出
長さが、前記断面Ｖ字状をなす突条基部に比し該
突条の基部以外の部分が長くされていることを特
徴とするものであり、短繊維の平均露出長さの長
短の分布範囲が、断面Ｖ字状をなす突条底部の短
繊維の分布高さをh'、該分布範囲より前記突条頂
部までの分布高さをｈとしたときh'／ｈが0.3以
下とされているもの、及び短繊維の平均露出長さ
の長い分布範囲における短繊維の平均露出長さが
0.15mmとされているものを含むものであり、いま
一つの発明は上記Ｖリブドベルトの製造方法に関
し、補強用短繊維を均一混合してなる重合体材料
を圧縮ゴム成形層とし、これに必要な引張り層、
抗張力体層等を積層一体瓦してなるベルト成形用
円筒体を成形し、次いで、該ベルト成形用円筒体
の前記重合体材料より成る圧縮ゴム成形層表面
に、周方向に沿つて荒仕上げ研削砥石にて断面Ｖ
字状をなす突条間の溝を研削成形し、次いで仕上
げ研削砥石にて前記溝底部のみを研削することを
特徴とするものである。
That is, the V-ribbed belt of the present invention is a V-ribbed belt in which a plurality of protrusions having a V-shaped cross section are arranged in parallel in the circumferential direction on the inner surface of the endless belt, and the protrusions are engaged with a grooved pulley and wound around the belt. In the V-ribbed belt, a part of the short fibers is exposed on the side surface of the protrusion having a V-shaped cross section, and the average exposed length of the short fiber is compared to the base of the protrusion having a V-shaped cross section. The protrusion is characterized in that the portion other than the base is lengthened, and the distribution range of the average exposed length of the short fibers is the same as that of the short fibers at the bottom of the protrusion, which has a V-shaped cross section. Where the distribution height is h' and the distribution height from the distribution range to the top of the ridge is h, h'/h is 0.3 or less, and a distribution range where the average exposed length of short fibers is long. The average exposed length of short fibers in
Another invention relates to a method for manufacturing the above-mentioned V-ribbed belt, in which a compressed rubber molding layer is made of a polymer material made by uniformly mixing reinforcing short fibers, and the necessary tensile layer,
A belt-forming cylindrical body is formed by laminating a tensile strength layer and the like into an integral tile, and then the surface of the compressed rubber molding layer made of the polymer material of the belt-forming cylindrical body is rough-finished along the circumferential direction. Cross section V with a grindstone
This method is characterized in that the groove between the letter-shaped protrusions is formed by grinding, and then only the bottom of the groove is ground using a finishing grindstone.
この発明のＶリブドベルトは溝付プーリと係合
するとき、Ｖリブ（断面Ｖ字状をなす突）側面に
は均一分散配置に短繊維５…５が露出するので、
この短繊維５…５によりプーリ溝側面との界面に
わずかではあるが〓間が出来、水分介入によるス
リツプ、異音の発生が防止される。
When the V-ribbed belt of the present invention engages with the grooved pulley, the short fibers 5...5 are exposed in a uniformly distributed arrangement on the side surface of the V-rib (protrusion with a V-shaped cross section).
These short fibers 5...5 create a slight gap at the interface with the side surface of the pulley groove, thereby preventing slips and abnormal noises due to moisture intervention.
一方、Ｖリブ２の基底部は精密仕上げにより充
分な深さとされているため溝付プーリの溝間の頂
部との直接接触が避けられ、Ｖリブ２の基底部の
異常摩耗が確実に防止される。 On the other hand, the base of the V-rib 2 is precision-finished to have a sufficient depth, so direct contact with the top between the grooves of the grooved pulley is avoided, and abnormal wear of the base of the V-rib 2 is reliably prevented. Ru.
また、Ｖリブ２の基底部の異常摩耗を確実に防
止するための上記短繊維５の露出長さの分布範囲
は、断面Ｖ字状をなす突条底部の短繊維の分布高
さをh′、該分布範囲より前記突条頂部までの分布
高さをｈとしたときh′／ｈが0.3以下とすること
が好ましい。 Furthermore, the distribution range of the exposed length of the short fibers 5 in order to reliably prevent abnormal wear at the base of the V-rib 2 is determined by h' , where h is the distribution height from the distribution range to the top of the protrusion, it is preferable that h'/h is 0.3 or less.
これは、上記露出長の分布を0.3より大きくす
るとＶリブ２の側面に露出する短い繊維の分布範
囲が大きくなり、Ｖリブ２の表面状態が平滑とな
つてベルトの張力増加の点では好都合であるが、
結露などの水分介在に起因するスリツプ及び異音
発生が防止できなくなるからである。 This is because if the exposed length distribution is made larger than 0.3, the distribution range of the short fibers exposed on the side surface of the V rib 2 becomes larger, and the surface condition of the V rib 2 becomes smoother, which is advantageous in terms of increasing belt tension. Yes, but
This is because slips and abnormal noises caused by moisture such as dew condensation cannot be prevented.
また0.3以下であれば、Ｖリブ２の側面基底部
だけが短い繊維の分布範囲とされていても良い。 Further, if it is 0.3 or less, only the side base of the V rib 2 may be the distribution range of short fibers.
Ｖリブ基部２Ａ付近の範囲h′部分はＶリブ基部
２Ａ間の溝の最奥部となり、プーリ溝側面７の頂
部と接触しないことと、この最奥部の形状を深く
シヤープに形成するためには、短繊維の露出長さ
が短い方が好都合だからである。 The area h' near the V-rib base 2A is the innermost part of the groove between the V-rib bases 2A, and in order to avoid contact with the top of the pulley groove side surface 7 and to form the shape of this innermost part deep and sharp. This is because it is more convenient for the short fibers to have a shorter exposed length.
また、短繊維の平均露出長さの長い分布範囲に
おける短繊維の平均露出長さが0.15mm以上とする
ことが好ましい。 Further, it is preferable that the average exposed length of the short fibers in the distribution range where the short fibers have a long average exposed length is 0.15 mm or more.
これより露出長さを短くするとベルト張力増加
の点では好都合であるが、前述のように結露など
の水分介在に起因するスリツプ及び異音発生が防
止できなくなるからである。 If the exposed length is made shorter than this, it is advantageous in terms of increasing belt tension, but as mentioned above, it becomes impossible to prevent slips and abnormal noises caused by the presence of moisture such as dew condensation.
次に、この発明を実施例により説明する。 Next, the present invention will be explained with reference to examples.
第１図はこの発明の実施例の断面図、第２図は
第１図の要部拡大図である。 FIG. 1 is a sectional view of an embodiment of the invention, and FIG. 2 is an enlarged view of the main part of FIG.
この発明のＶリブドベルト１は、第１図におい
て紙背方向へ走行し、第２図における同じく紙背
方向へ回転するプーリ溝側面７（第２図）と接触
する断面Ｖ字状をなす突条（以下同じく「Ｖリ
ブ」という）２のプーリ溝側面７と接する側面３
に、該Ｖリブ２を構成する重合体材料４内に均一
埋入した短繊維５…５の一端が第２図に示すよう
に露出され、かつ短繊維５…５の平均露出長さＬ
が、Ｖリブ２基部２Ａ（範囲h′）に比し、Ｖリブ
２の基部２Ａ以外の部分（範囲ｈ）のものが長く
されて構成されている。 The V-ribbed belt 1 of the present invention runs toward the back of the paper in FIG. 1, and has a protrusion (hereinafter referred to as Side surface 3 in contact with pulley groove side surface 7 of 2 (also referred to as "V rib")
2, one end of the short fibers 5...5 uniformly embedded in the polymer material 4 constituting the V-rib 2 is exposed as shown in FIG. 2, and the average exposed length L of the short fibers 5...5 is
However, the portion of the V rib 2 other than the base 2A (range h) is made longer than the base 2A of the V rib 2 (range h').
なお、これら短繊維５…５は、Ｖリブドベルト
１の幅方向に出来るだけ配向することが望まし
い。 Note that it is desirable that these short fibers 5...5 be oriented in the width direction of the V-ribbed belt 1 as much as possible.
上記実施例において、短繊維５…５をＶリブ２
の側面に露出させるのは、この露出部分によつて
Ｖリブ２側面とプーリ溝側面７との間に微小〓間
を形成し、水分等の密閉化を防止するためであり
短繊維５の長く露出する部分Ｌの部分範囲は、長
く露出する部分（範囲ｈ）を、第２図に示すよう
にプーリの溝側面７に接触するＶリブ２全面（範
囲Ｈ）とすることがが望ましいが、上記範囲の
h′／ｈの値が0.3以下とされていれば良い。 In the above example, the short fibers 5...5 are
The reason for exposing the side surface of the short fiber 5 is to form a small gap between the side surface of the V rib 2 and the side surface 7 of the pulley groove by this exposed portion to prevent sealing of moisture etc. As for the partial range of the exposed portion L, it is desirable that the long exposed portion (range h) be the entire surface of the V rib 2 (range H) that contacts the groove side surface 7 of the pulley, as shown in FIG. of the above range
It is sufficient that the value of h'/h is 0.3 or less.
その他上記実施例における重合材料４としては
従来Ｖベルト成形の際圧縮ゴム成形層成形用とし
て通常使用されている材料、例えば、クロロプレ
ン、合成ゴム等が使用される。 In addition, as the polymeric material 4 in the above-mentioned embodiments, there are used materials conventionally used for forming a compressed rubber molding layer in V-belt molding, such as chloroprene, synthetic rubber, and the like.
また、短繊維５…５としては、綿、ナイロン、
ポリエステル、アラミツド繊維等の繊維が使用さ
れる。 In addition, short fibers 5...5 include cotton, nylon,
Fibers such as polyester and aramid fibers are used.
次にこの発明の製法について説明する。 Next, the manufacturing method of this invention will be explained.
まず、第３図に示すように成形用芯金１０上
に、必要な引張層１１、接着用ゴム層を介し、補
強芯層１２を重ね再び接着用ゴム層を重ね、次い
で短繊維５…５を均一混合して成る圧縮ゴム成形
層１３を重ねて圧縮加硫し一体化させ、ベルト成
形用円筒体１４を得る。 First, as shown in FIG. 3, the reinforcing core layer 12 is laid on the molding core bar 10 via the necessary tensile layer 11 and the adhesive rubber layer, and then the adhesive rubber layer is laid again, and then the short fibers 5...5 The compressed rubber molding layers 13 made of a uniform mixture of the above are stacked and compressed and vulcanized to be integrated, thereby obtaining a cylindrical body 14 for belt molding.
次いで、ベルト成形用円筒体１４を第４図に示
すように、二本のロール１５，１５間に掛け、循
環移動させると共に、ベルト成形用円筒体１４の
圧縮ゴム成形層１３表面に粒度＃80等とされた荒
仕上げ砥石１６を接触させ、第５図に実線で示す
ようにＶリブ２間の溝１７を研削していく。 Next, as shown in FIG. 4, the belt-forming cylindrical body 14 is placed between two rolls 15, 15 and circulated, and the surface of the compressed rubber molding layer 13 of the belt-forming cylindrical body 14 is coated with grain size #80. A rough finishing grindstone 16 made of a similar material is brought into contact with the grooves 17 between the V-ribs 2 as shown by solid lines in FIG.
このとき、溝１７側面は、荒仕上げ砥石により
研削されるから圧縮ゴム成形層１３内の短繊維５
…５は完全に切断除去されることなく一端を露出
させた状態で残る。 At this time, since the side surfaces of the groove 17 are ground by a rough finishing grindstone, the short fibers 5 in the compressed rubber molding layer 13
...5 remains with one end exposed without being completely cut and removed.
次いで溝１７の荒研削の終了後は前記荒仕上げ
砥石１６に代え、仕上げ用砥石１８により溝１７
底部のみを仕上げ研削し、第５図に鎖線で示すよ
うに仕上げる。 Next, after the rough grinding of the grooves 17 is completed, the grooves 17 are ground using a finishing whetstone 18 instead of the rough finishing whetstone 16.
Only the bottom part is finish ground and finished as shown by the chain line in Figure 5.
この仕上げ研削により溝底部が精密仕上げされ
特に第５図において符号１９で示すＶリブ２間の
溝１７底面の曲率面が小曲率とされ正確に仕上げ
られる。 By this finishing grinding, the bottom of the groove is precisely finished, and in particular, the curvature of the bottom surface of the groove 17 between the V ribs 2, indicated by reference numeral 19 in FIG. 5, is reduced to a small curvature and finished accurately.
次いで、上記ベルト成形用円筒体１４を適宜の
数の溝１７毎に輪状に切断することによりＶリブ
ドベルトが製造されるのである。 Next, the V-ribbed belt is manufactured by cutting the belt-forming cylindrical body 14 into a ring shape with an appropriate number of grooves 17.
次に、この発明の実施例に付きスリツプ発生乃
び異音の発生状況をテストしたところ、次の結果
が得られた。 Next, when testing the occurrence of slips and abnormal noises in accordance with the embodiments of the present invention, the following results were obtained.
第６図に示すように、Ｖリブドベルト１の一端
をロードセル２０に固定し、他端に死荷重Ｗ
（1.75Kg）を掛け、中間にプーリ２１を配置し、
該プーリ２１を矢印方向に43rpmで回転させ、こ
のときの摩擦により生じる張力T1をロードセル
２０よりアンプ２２を通じ測定した。 As shown in FIG. 6, one end of the V-ribbed belt 1 is fixed to the load cell 20, and the dead load W is attached to the other end.
(1.75Kg), place pulley 21 in the middle,
The pulley 21 was rotated at 43 rpm in the direction of the arrow, and the tension T1 generated by friction at this time was measured from the load cell 20 through the amplifier 22.
測定方法は乾燥状態において約５分、張力T1
が一定となるのを待つて噴霧器により水プーリ２
１とＶリブドベルト１の接触界面に噴霧し、張力
T1の変化を測定した。 The measurement method is approximately 5 minutes in dry condition, tension T 1
Wait until the water becomes constant, then use a sprayer to
Spray on the contact interface between 1 and V-ribbed belt 1 to create tension.
Changes in T 1 were measured.
その結果は第７図に示す通りであつた。 The results were as shown in FIG.
第７図において、実線で示すグラフは、この発
明の実施例の結果を示すものであり、短繊維５…
５の範囲ｈにおける平均露出長L0.287mm、h′／ｈ
＝0.2とされたもの、一点鎖線で示すグラフが同
平均露出長L0.1mm、h′／ｈ＝0.2、鎖線で示すグ
ラフが同平均露出長Ｌが0.03mmとされたものを示
す。 In FIG. 7, the graph shown by the solid line shows the results of the example of the present invention, and the short fibers 5...
Average exposure length L0.287mm in range h of 5, h'/h
= 0.2, the graph shown by the dashed line shows the average exposed length L of 0.1 mm and h'/h=0.2, and the graph shown by the chain line shows the average exposed length L of 0.03 mm.
第７図より明らかなように、水噴霧後の張力
T1はこの発明の実施例の場合殆ど変化しないの
に対し、比較例（一点鎖線、鎖線で示す）はいず
れも水噴霧後、張力T1が急激に増加するピーク
Ｐを示し、このピークＰ部分でスリツプを生じ異
音を生じた。 As is clear from Figure 7, the tension after water spraying
T 1 hardly changes in the case of the example of the present invention, whereas the comparative examples (indicated by dashed lines and dashed lines) all show a peak P where the tension T 1 rapidly increases after water spraying, and this peak P A slip occurred in some parts and an abnormal noise was produced.
また、前述のh′／ｈにつき、種々値を異ならせ
て試験した結果、第８図のような結果が得られ
た。 Further, as a result of tests using various values of h'/h, the results shown in FIG. 8 were obtained.
なお、第８図において、Ｖリブドベルト１のＶ
リブ２の高さ（h′＋ｈ）とプーリの溝１７深さｂ
との関係は、図示のように、ａ≦h′，ｈ≦ｂの関
係とされる。 In addition, in FIG. 8, the V-ribbed belt 1
Height of rib 2 (h'+h) and depth b of pulley groove 17
As shown in the figure, the relationship between a≦h' and h≦b holds true.
第８図より明らかなように、h′／ｈ＝0.3付近
より急激に張力T1が増加しこの時に異音が発生
することが確かめられ、この結果h′／ｈ≦0.3と
することが好ましいことが判明した。 As is clear from Fig. 8, it was confirmed that the tension T 1 increases rapidly from around h'/h = 0.3 and abnormal noise is generated at this time.As a result, it is preferable to set h'/h≦0.3. It has been found.
この発明は、以上説明したように、Ｖリブ２側
面に露出させた短繊維５…５によりＶリブドベル
ト１の水分介入等によるスリツプ、異音発生が有
効に防止でき、かつ、Ｖリブ２間の溝底面の形状
は、小曲率の精密仕上げとし得るから、プーリと
の接触を確実に防止できる深さの溝となし得、ま
た、この発明のＶリブドベルト１を製造する場
合、荒研削と仕上げ研削の２工程とはなるが、荒
研削は加工時間が短く、仕上げ研削はＶリブ２間
溝１７底部だけで良いから、全体としての加工時
間は短縮化され、容易に実施出来る等種々の効果
を有する。
As explained above, this invention can effectively prevent slips and abnormal noises caused by moisture intervention in the V-ribbed belt 1 by using the short fibers 5...5 exposed on the side surfaces of the V-ribs 2, and Since the shape of the groove bottom surface can be precision finished with a small curvature, the groove can be made deep enough to reliably prevent contact with the pulley.Furthermore, when manufacturing the V-ribbed belt 1 of the present invention, rough grinding and finish grinding are required. Although it is a two-step process, the rough grinding takes less time, and the finish grinding only needs to be done on the bottom of the groove 17 between the two V ribs, so the overall processing time is shortened and it can be easily carried out. have
第１図はこの発明の実施例の断面図、第２図は
第１図の要部拡大図、第３図〜第５図はこの発明
の製法を示す説明図、第６図はこの発明の実施例
の試験装置の説明図、第７図は試験結果を示すグ
ラフ、第８図はh′／ｈの適正値を示すグラフであ
る。
Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is an enlarged view of the main part of Fig. 1, Figs. 3 to 5 are explanatory diagrams showing the manufacturing method of this invention, and Fig. 6 is FIG. 7 is a graph showing the test results, and FIG. 8 is a graph showing the appropriate value of h'/h.
Claims (1)
す複数本の突条が並設され、該突条を溝付プーリ
に係合させて巻掛けられるＶリブドベルトにおい
て、Ｖリブドベルトの断面Ｖ字状をなす突状の側
面に短繊維の一部が露出されており、かつ、短繊
維の平均露出長さが、前記断面Ｖ字状をなす突条
基部に比し該突条の基部以外の部分が長くされて
いることを特徴とするＶリブドベルト。 ２ 短繊維の平均露出長さの長短の分布範囲が、
断面Ｖ字状をなす突条底部の短繊維の分布高さを
h'、該分布範囲より前記突条頂部までの分布高さ
をｈとしたときh'／ｈが0.3以下とされている特
許請求の範囲第１項記載のＶリブドベルト。 ３ 短繊維の平均露出長さの長い分布範囲におけ
る短繊維の平均露出長さが0.15mmとされている特
許請求の範囲第１項記載のＶリブドベルト。 ４ 補強用短繊維を均一混合してなる重合体材料
を圧縮ゴム成形層とし、これに必要な引張り層、
抗張力体層等を積層一体瓦してなるベルト成形用
円筒体を成形し、次いで、該ベルト成形用円筒体
の前記重合体材料より成る圧縮ゴム成形層表面
に、周方向に沿つて荒仕上げ研削砥石にて断面Ｖ
字状をなす突条間の溝を研削成形し、次いで仕上
げ研削砥石にて前記溝底部のみを研削することを
特徴とするＶリブドベルトの製法。[Scope of Claims] 1. A V-ribbed belt in which a plurality of protrusions having a V-shaped cross section are arranged in parallel in the circumferential direction of the inner surface of the endless belt, and the protrusions are engaged with a grooved pulley and wound around the belt, A portion of the short fibers are exposed on the protruding side surface of the V-shaped cross section of the V-ribbed belt, and the average exposed length of the short fibers is smaller than that of the protrusion base having the V-shaped cross section. A V-ribbed belt characterized by the length of the ridges other than the base. 2. The distribution range of the average exposed length of short fibers is
The distribution height of the short fibers at the bottom of the ridge with a V-shaped cross section is
The V-ribbed belt according to claim 1, wherein h'/h is 0.3 or less, where h' is the distribution height from the distribution range to the top of the protrusion. 3. The V-ribbed belt according to claim 1, wherein the average exposed length of the short fibers in the long distribution range of short fibers is 0.15 mm. 4 A compressed rubber molding layer made of a polymer material made by uniformly mixing reinforcing short fibers, and a tensile layer necessary for this,
A belt-forming cylindrical body is formed by laminating a tensile strength layer and the like into an integral tile, and then the surface of the compressed rubber molding layer made of the polymer material of the belt-forming cylindrical body is rough-finished along the circumferential direction. Cross section V with a grindstone
A method for manufacturing a V-ribbed belt, characterized in that grooves between the letter-shaped protrusions are formed by grinding, and then only the bottom of the grooves is ground using a finishing grindstone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25333685A JPS62113940A (en) | 1985-11-11 | 1985-11-11 | V-ribbed belt and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25333685A JPS62113940A (en) | 1985-11-11 | 1985-11-11 | V-ribbed belt and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62113940A JPS62113940A (en) | 1987-05-25 |
| JPH0564255B2 true JPH0564255B2 (en) | 1993-09-14 |
Family
ID=17249896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25333685A Granted JPS62113940A (en) | 1985-11-11 | 1985-11-11 | V-ribbed belt and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62113940A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4798566A (en) * | 1987-11-19 | 1989-01-17 | The Gates Rubber Company | Power transmission belt |
| JP2608803B2 (en) * | 1989-11-20 | 1997-05-14 | 三ツ星ベルト株式会社 | V-ribbed belt and method of manufacturing the same |
| JPH0731006Y2 (en) * | 1990-05-02 | 1995-07-19 | 三ツ星ベルト株式会社 | Power transmission belt |
| JP2529695Y2 (en) * | 1990-09-18 | 1997-03-19 | バンドー化学株式会社 | V-ribbed belt |
| JPH07117124B2 (en) * | 1993-03-04 | 1995-12-18 | 三ツ星ベルト株式会社 | Power transmission belt |
| JP2562112B2 (en) * | 1993-07-07 | 1996-12-11 | 三ツ星ベルト株式会社 | V-ribbed belt and grinder wheel for V-ribbed belt |
| US5498213A (en) * | 1994-12-15 | 1996-03-12 | Mitsuboshi Belting Ltd. | Power transmission belt |
| JP2941674B2 (en) * | 1994-12-28 | 1999-08-25 | 三ツ星ベルト株式会社 | Drive device for V-ribbed belt |
| JPH1047436A (en) * | 1996-08-08 | 1998-02-20 | Bando Chem Ind Ltd | Drive power transmission belt or roller |
| FR2753248B1 (en) * | 1996-09-10 | 1998-11-06 | Hutchinson | METHOD FOR MANUFACTURING A TRANSMISSION BELT AND BELT OBTAINED THEREBY |
| US6435997B1 (en) | 1999-05-24 | 2002-08-20 | Bando Chemical Industries, Ltd. | Power transmission belt and method for fabricating the same |
| JP6007353B2 (en) * | 2014-08-19 | 2016-10-12 | バンドー化学株式会社 | V-ribbed belt, method for manufacturing the same, and belt transmission device |
-
1985
- 1985-11-11 JP JP25333685A patent/JPS62113940A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62113940A (en) | 1987-05-25 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |