JPS6315629Y2 - - Google Patents
Info
- Publication number
- JPS6315629Y2 JPS6315629Y2 JP1982072418U JP7241882U JPS6315629Y2 JP S6315629 Y2 JPS6315629 Y2 JP S6315629Y2 JP 1982072418 U JP1982072418 U JP 1982072418U JP 7241882 U JP7241882 U JP 7241882U JP S6315629 Y2 JPS6315629 Y2 JP S6315629Y2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- rubber
- edge type
- noise
- elastic body
- 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
Links
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 239000013013 elastic material Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 description 13
- 239000005060 rubber Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Description
【考案の詳細な説明】
この考案はローエツジ型Ｖベルトに関し、詳し
くは側面に帆布層を設けることなく形成されたＶ
ベルトの改良に関するものである。[Detailed explanation of the invention] This invention relates to a low edge type V-belt.
This relates to belt improvements.
一般にローエツジ型Ｖベルトは側面の摩擦係数
が高く、かつ製造が容易であるといつた利点を有
するが、高回転、高トルク伝動になるとＶベルト
使用時における見かけの摩擦係数と上記側面の摩
擦係数が相乗して騒音が発生しやすくなるといつ
た問題があつた。 In general, low-edge type V-belts have the advantage of having a high friction coefficient on the side surfaces and being easy to manufacture, but when it comes to high rotation and high torque transmission, the apparent friction coefficient when using the V-belt and the above-mentioned side friction coefficient There was a problem that the noise was more likely to be generated due to the synergistic effects of the noise.
従来このような問題を解消するため、例えば特
公昭55−41910号、特公昭54−36630号、さらには
特開昭54−31849号に見られるように、Ｖベルト
側面の表面摩擦抵抗を減小することが提案されて
いるが、側面表面層がプーリとの接触により摩耗
すると効果が消失するため、効果の持続性に難点
があり、又、実公昭33−16007号、実開昭54−
95661号に見られるようにベルト断面を２段角と
することにより見かけの摩擦係数の調整を図るこ
とも提案されているが、技術的に２段角成形が困
難であり、又、圧縮部の側圧低下をおぎなうため
高質な材料を用いる必要があり、汎用性に乏しい
といつた問題があつた。又、Ｖベルトの内外周面
にコグ又は不等ピツチの凹凸を付け、プーリへの
巻き付き屈曲性を良くし、同時に側圧調整を行う
ことも提案されているが、コグ等を成形するため
の型を要し、又、コグ等を切削形成する場合は作
業工程が複雑となり、いずれにしても製造上設備
あるいは手間を要するといつた難点があつた。 Conventionally, in order to solve this problem, as seen in Japanese Patent Publication No. 55-41910, Japanese Patent Publication No. 54-36630, and even Japanese Patent Application Laid-Open No. 54-31849, efforts were made to reduce the surface frictional resistance of the side surface of the V-belt. However, as the effect disappears when the side surface layer wears out due to contact with the pulley, there is a problem in the sustainability of the effect.
As seen in No. 95661, it has been proposed to adjust the apparent coefficient of friction by making the belt cross section into a two-step angle, but it is technically difficult to form a two-step angle, and the compression part In order to compensate for the reduction in lateral pressure, it was necessary to use high-quality materials, which caused problems such as poor versatility. It has also been proposed to add cogs or unequal pitch unevenness to the inner and outer peripheral surfaces of the V-belt to improve the flexibility of wrapping around the pulleys and to adjust the lateral pressure at the same time. Further, when cutting and forming the cog etc., the work process becomes complicated, and in any case, there is a drawback that manufacturing equipment or labor is required.
この考案は上記種々の問題に鑑み、騒音発生が
少なく、かつ製造も容易に行えるローエツジ型Ｖ
ベルトを提供することを目的としてなされたもの
であつて、抗張力体より内側の圧縮部全体が、繊
維補強されたゴム状弾性体により成るローエツジ
型Ｖベルトにおいて、前記圧縮部のゴム状弾性体
より軟質であるゴム状弾性体より成り、かつ断面
積が一定しない多数の棒状体が、前記圧縮部の巾
方向に不均一配置として貫通挿入され一体化され
て成ることを特徴とするものである。 In view of the various problems mentioned above, this idea was developed to create a low-edge type V that generates less noise and is easy to manufacture.
This is a low-edge type V-belt that is made for the purpose of providing a belt, in which the entire compressed part inside the tensile strength member is made of a fiber-reinforced rubber-like elastic body, and the compressed part is made of a fiber-reinforced rubber-like elastic body. It is characterized in that a large number of rod-like bodies made of a soft rubber-like elastic body and having variable cross-sectional areas are inserted through and integrated into the compression part in a non-uniform arrangement in the width direction of the compression part.
次に、この考案を実施例により説明する。 Next, this invention will be explained using examples.
第１図はこの考案の実施例の側面図、第２図は
第１図の−線断面図である。 FIG. 1 is a side view of an embodiment of this invention, and FIG. 2 is a sectional view taken along the line -- in FIG.
この考案のローエツジ型Ｖベルト（以下Ｖベル
トと言う）１は、抗張力体２より内側の圧縮部３
全体が短繊維を練り込んだゴム、例えばスチフレ
ツクスゴムなどのゴム状弾性体４で形成されてお
り、この圧縮部３には、前記ゴム状弾性体４より
も軟質なゴム状弾性体より成り、かつ断面積５が
一定しない多数の棒状体６が前記圧縮部３の巾方
向（矢印Ｐ）に不均一配置として貫通挿入され一
体化されて構成されている。 The low edge type V-belt (hereinafter referred to as V-belt) 1 of this invention has a compression section 3 located inside the tensile strength member 2.
The entire body is made of a rubber-like elastic body 4 such as rubber kneaded with short fibers, such as stiffflex rubber, and the compressed portion 3 is made of a rubber-like elastic body 4 that is softer than the rubber-like elastic body 4. A large number of rod-shaped bodies 6 having an irregular cross-sectional area 5 are inserted through the compressed portion 3 in a non-uniform arrangement in the width direction (arrow P) and are integrated.
尚、上記実施例において、圧縮部３を構成する
ゴム状弾性体４の硬度は、スチフレツクスゴムの
場合JIS A78゜〜84゜とされ、又、棒状体６の硬度
はJIS A60゜〜70゜とされている。 In the above embodiment, the hardness of the rubber-like elastic body 4 constituting the compression section 3 is JIS A78° to 84° in the case of stiff flexible rubber, and the hardness of the rod-shaped body 6 is JIS A60° to 70°. It is said to be ゜.
次に、この考案のＶベルトの製造手段について
説明する。 Next, the means for manufacturing the V-belt of this invention will be explained.
まず公知の方法によりクロロプレンゴムをベー
スとして綿又はナイロン、ケブラー、ポリエステ
ルの短繊維を練り込みカレンダーロールでシート
を形成する。このシートを一定巾でカツトし90゜
ひねつてジヨイントする。次いで、このシート７
を第３図に示すように適宜長さl1，l2…に裁断し、
第４図に示すように別に用意した軟質ゴムシート
から切り出した短冊片８を切断片７′間に介挿し、
接合端を接合する。 First, short fibers of cotton, nylon, Kevlar, or polyester are kneaded into a chloroprene rubber base using a known method, and a sheet is formed using a calendar roll. Cut this sheet to a certain width, twist it 90 degrees and join it. Next, this sheet 7
As shown in Figure 3, cut into appropriate lengths l 1 , l 2 ...,
As shown in FIG. 4, a strip 8 cut out from a separately prepared soft rubber sheet is inserted between the cut pieces 7'.
Join the joint ends.
次いで、このようにして得たゴムシートをＶベ
ルトの圧縮部に配置し、以後通常の手段によりＶ
ベルトを成形するのである。 Next, the rubber sheet thus obtained is placed in the compression section of the V-belt, and thereafter the V-belt is compressed by normal means.
It forms the belt.
この考案のＶベルト１の圧縮部３は、アトラン
ダムに貫設挿入され一体化された軟質のゴム状弾
性物質により側方向への弾力性に富むため、圧縮
部の表面摩擦は従来のローエツジ型Ｖベルトと同
一であるにもかかわらず、弾性による側圧の吸収
があるため騒音発生が少ない。又、ベルトの騒音
はプーリとベルトの共振点で大きくなるが、Ｖベ
ルト１の固有振動数は圧縮部の形状、配置共にア
トランダムな側方向貫通の軟質ゴム状弾性物質に
より実質的に不定数とされ、プーリ側の固有振動
数が一定であつても共振現象が生じにくくなり、
騒音発生も少なくなるのである。 The compression section 3 of the V-belt 1 of this invention has high elasticity in the lateral direction due to the integrated soft rubber-like elastic material that is inserted through the V-belt 1 at random, so the surface friction of the compression section is lower than that of the conventional low edge type. Although it is the same as a V-belt, it generates less noise because it absorbs lateral pressure due to its elasticity. In addition, the noise of the belt becomes large at the resonance point between the pulley and the belt, but the natural frequency of the V-belt 1 is substantially indeterminate due to the shape and arrangement of the compression part and the soft rubber-like elastic material that penetrates in the lateral direction at random. Therefore, even if the natural frequency of the pulley side is constant, resonance phenomenon is less likely to occur.
Noise generation is also reduced.
ちなみに、Ｖベルト１の圧縮部のスチフレツク
ス中の軟質ゴムの比率と騒音との関係、及びゴム
硬度と寿命比率との関係を第５図に示した試験装
置により試験したところ、第６図、第７図のよう
な結果が得られた。 Incidentally, when the relationship between the ratio of soft rubber in the stiffness of the compression section of the V-belt 1 and noise and the relationship between rubber hardness and life ratio were tested using the test equipment shown in Figure 5, the results shown in Figures 6 and 6 were tested. The results shown in Figure 7 were obtained.
第５図における試験装置は、駆動プーリ１０、
従動プーリ１１、及びアイドラ１２とからなり、
これらの間にＶベルト１を巻掛け、その中心にマ
イク１３を配置し、騒音を測定するもので、駆
動、従動プーリの径はそれぞれ120.7φ、アイドラ
は63.5φ、駆動プーリの回転数4900rpm、アイド
ラに120ポンドの荷重を矢印方向に加えたもので
ある。 The test device in FIG. 5 includes a drive pulley 10,
Consists of a driven pulley 11 and an idler 12,
A V-belt 1 is wound between these, and a microphone 13 is placed in the center to measure the noise.The diameter of the drive and driven pulleys is each 120.7φ, the idler is 63.5φ, the rotation speed of the drive pulley is 4900rpm, A load of 120 pounds is applied to the idler in the direction of the arrow.
第６図は圧縮部のスチフレツクス中の軟質ゴム
の比率と騒音（dBA）の相関を示すものであり、
比率20〜40％のときが良好な結果が得られること
が判明した。なお、使用したベルトは軟質ゴムの
硬度が65゜、厚さ1.2m／ｍ、巾５〜15m／ｍのも
のをランダムに３層入れられているものである。 Figure 6 shows the correlation between the ratio of soft rubber in the stiffness of the compression section and the noise (dBA).
It has been found that good results are obtained when the ratio is between 20 and 40%. The belt used was made of three randomly placed layers of soft rubber having a hardness of 65°, a thickness of 1.2 m/m, and a width of 5 to 15 m/m.
第７図は軟質ゴムの硬度とベルトの寿命との相
関を示すものであり、スチフレツクスのゴム硬度
80゜のものに対し、種々の軟質ゴムをアトランダ
ムに充填したものの場合を示す。使用したベルト
は軟質ゴムの比率を30％、厚さ1.2m／ｍ、巾
5m／ｍ〜15m／ｍのものがランダムに３層入れ
られているものを用いた。結果によれば、軟質ゴ
ム硬度が60゜〜70゜付近のものが良く、寿命比率と
の相関においてもこの範囲が最も望ましいことが
判明した。 Figure 7 shows the correlation between the hardness of soft rubber and the life of the belt.
The case where various soft rubbers are randomly filled is shown for the 80° one. The belt used has a soft rubber ratio of 30%, a thickness of 1.2m/m, and a width of 1.2m/m.
Three layers of 5m/m to 15m/m were used at random. According to the results, it was found that soft rubber hardness of around 60° to 70° is good, and this range is the most desirable in terms of correlation with life ratio.
この考案のＶベルト１は、以上述べたように、
Ｖベルトのアイドリング時及び高負荷、高回転の
条件下においても騒音が発生しにくく、しかも製
造も殆ど従来技術を用いて可能であるから製造も
容易であるなど、種々の実用的効果を有する。 As mentioned above, the V-belt 1 of this invention is
It has various practical effects, such as being less likely to generate noise even when the V-belt is idling and under high load and high rotation conditions, and being easy to manufacture since it can be manufactured using almost any conventional technology.
第１図はこの考案の実施例の側面図、第２図は
第１図の−線断面図、第３図、第４図は実施
例の製造状態説明図、第５図は試験装置の概念
図、第６図、第７図は試験結果を示すグラフであ
る。
１……ローエツジ型Ｖベルト、２……抗張力
体、３……圧縮部、４……ゴム状弾性体、５……
断面、６……軟質のゴム状弾性体。
Fig. 1 is a side view of an embodiment of this invention, Fig. 2 is a sectional view taken along the line - - of Fig. 1, Figs. 3 and 4 are explanatory diagrams of the manufacturing state of the embodiment, and Fig. 5 is a concept of the test device. 6 and 7 are graphs showing the test results. DESCRIPTION OF SYMBOLS 1... Low edge type V belt, 2... Tensile strength body, 3... Compression part, 4... Rubber-like elastic body, 5...
Cross section, 6... Soft rubber-like elastic body.
Claims (1)
れたゴム状弾性体より成るローエツジ型Ｖベルト
において、前記圧縮部のゴム状弾性体より軟質で
あるゴム状弾性体より成り、かつ断面積が一定し
ない多数の棒状体が、前記圧縮部の巾方向に不均
一配置として貫通挿入され一体化されて成ること
を特徴とするローエツジ型Ｖベルト。 In a low edge type V-belt, the entire compression section inside the tensile strength member is made of a fiber-reinforced rubber-like elastic material, and the cross-sectional area is constant. 1. A low edge type V-belt, characterized in that a large number of rod-shaped bodies are inserted through and integrated into the compression part in a non-uniform arrangement in the width direction of the compression part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7241882U JPS58173852U (en) | 1982-05-17 | 1982-05-17 | Low edge type V belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7241882U JPS58173852U (en) | 1982-05-17 | 1982-05-17 | Low edge type V belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58173852U JPS58173852U (en) | 1983-11-21 |
| JPS6315629Y2 true JPS6315629Y2 (en) | 1988-05-02 |
Family
ID=30081984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7241882U Granted JPS58173852U (en) | 1982-05-17 | 1982-05-17 | Low edge type V belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58173852U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6342194Y2 (en) * | 1981-03-17 | 1988-11-04 |
-
1982
- 1982-05-17 JP JP7241882U patent/JPS58173852U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58173852U (en) | 1983-11-21 |
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