JPH0454353Y2 - - Google Patents
Info
- Publication number
- JPH0454353Y2 JPH0454353Y2 JP1984129556U JP12955684U JPH0454353Y2 JP H0454353 Y2 JPH0454353 Y2 JP H0454353Y2 JP 1984129556 U JP1984129556 U JP 1984129556U JP 12955684 U JP12955684 U JP 12955684U JP H0454353 Y2 JPH0454353 Y2 JP H0454353Y2
- Authority
- JP
- Japan
- Prior art keywords
- rubber layer
- rubber
- layer
- belt
- soft rubber
- 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
- 230000005540 biological transmission Effects 0.000 claims description 19
- 239000000835 fiber Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 206010016256 fatigue Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000872 buffer Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は耐側圧性に優れた高負荷伝動に適する
伝動ベルトに関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a power transmission belt that has excellent side pressure resistance and is suitable for high-load transmission.
(従来の技術)
従来より、高負荷伝動用の伝動ベルトとして、
圧縮ゴム部の任意の位置に側圧補強用のスダレコ
ードを1〜複数層設けたものが知られている(例
えば実開昭57−150645号公報、特公昭59−7859号
公報参照)。(Conventional technology) Conventionally, as a transmission belt for high-load transmission,
It is known that one or more layers of sudarecord for reinforcing lateral pressure are provided at arbitrary positions of the compressed rubber portion (see, for example, Japanese Utility Model Application Publication No. 57-150645 and Japanese Patent Publication No. 59-7859).
(考案が解決しようとする課題)
ところが、上述した如きベルトでは、圧縮ゴム
部を構成するゴムにてスダレコードを直接的に接
着しているので、動力伝動過程において、第9図
に示すように、伝動ベルトaに対し圧縮力F1,
F1と剪断力F2,F2が作用して伝動ベルトaが変
形すると、スダレコードbのベルト変形に従つて
変形する。この場合、スダレコードbは補強材と
しての要求から剛性が高く、圧縮ゴム層cを構成
するゴムとは変形率が異なるのに対し、伝動ベル
トaは一体に成形された複合体であるから、見掛
け上、連続的に一様に変形しようとするが、圧縮
ゴム層cのゴムとスダレコードbとの接合界面に
無理な力が作用して早期に疲労破壊に至るという
不具合がある。(Problem to be solved by the invention) However, in the above-mentioned belt, since the rubber constituting the compressed rubber part is directly bonded to the rubber record, during the power transmission process, as shown in Fig. 9, , compressive force F 1 on transmission belt a,
When the transmission belt a is deformed due to the action of F 1 and the shearing forces F 2 and F 2 , it deforms in accordance with the belt deformation of the Suda record b. In this case, SudaRecord b has high rigidity due to its requirement as a reinforcing material, and has a different deformation rate from the rubber constituting the compressed rubber layer c, whereas the power transmission belt a is an integrally formed composite body. Although it appears to deform continuously and uniformly, there is a problem in that an excessive force acts on the bonding interface between the rubber of the compressed rubber layer c and the Suda record b, leading to early fatigue failure.
本考案はかかる点に鑑みてなされたもので、ス
ダレコードの圧縮ゴム層への接着性を向上させ、
接合界面での疲労破壊を抑制し、ベルト寿命を向
上させた伝動ベルトを提供することを目的とする
ものである。 The present invention was developed in view of these points, and improves the adhesion of Suda record to the compressed rubber layer.
The object of the present invention is to provide a power transmission belt that suppresses fatigue fracture at the joint interface and improves belt life.
(課題を解決するための手段)
本考案は、上記目的を達成するために、接着ゴ
ム中に心体コードがスパイラル状に埋設されてな
る接着ゴム中に心体コードがスパイラル状に埋設
されてなる抗張体層の上側に伸長ゴム層を、下側
に圧縮ゴム層をそれぞれ有するベルトであつて、
前記圧縮ゴム層に少なくとも一層以上の軟質ゴム
層が設けられ、該軟質ゴム層にベルト幅方向のス
ダレコードが埋設されてなり、上記軟質ゴム層を
構成するゴムは、圧縮ゴム層を構成するゴムより
もJISA硬度が5度以上低く、上記軟質ゴム層は
厚さがスダレコードの直径の1.1〜2.0倍であるこ
とを特徴とするものである。(Means for Solving the Problems) In order to achieve the above object, the present invention has a core cord embedded in an adhesive rubber in a spiral shape.A core cord is embedded in an adhesive rubber in a spiral shape. A belt having an elongated rubber layer on the upper side of the tensile material layer and a compressed rubber layer on the lower side,
The compressed rubber layer is provided with at least one soft rubber layer, and a rubber record in the belt width direction is embedded in the soft rubber layer, and the rubber constituting the soft rubber layer is the same as the rubber constituting the compressed rubber layer. The soft rubber layer is characterized by having a JISA hardness 5 degrees or more lower than that of the Suda record, and a thickness of the soft rubber layer is 1.1 to 2.0 times the diameter of the Suda record.
すなわち、本考案は軟質ゴム層を介してスダレ
コードを圧縮ゴム層に接着することで、スダレコ
ードの圧縮ゴム層への接着性を向上させるもので
ある。 That is, the present invention improves the adhesion of the Suda record to the compressed rubber layer by adhering the Suda record to the compressed rubber layer via the soft rubber layer.
(作用)
動力伝動過程において、軟質ゴム層を構成する
ゴムが、圧縮ゴム層を構成するゴムとスダレコー
ドとの変形率の相違により両者の接合界面付近に
発生する力を緩衝して、疲労破壊を防止するよう
に機能する。(Function) During the power transmission process, the rubber constituting the soft rubber layer buffers the force generated near the joint interface between the rubber constituting the compressed rubber layer and the Suda record due to the difference in deformation rate between the two, thereby preventing fatigue failure. functions to prevent
(実施例)
以下、本考案の実施例を図面に沿つて詳細に説
明する。(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
第1図及び第2図において、1は伝動ベルトの
一例としてのローエツジVベルトで、抗張体層2
の上側に伸長ゴム層3が、下側に圧縮ゴム層4が
それぞれ設けられている。 In FIGS. 1 and 2, 1 is a low edge V belt as an example of a power transmission belt, and a tensile layer 2
An elongated rubber layer 3 is provided on the upper side, and a compressed rubber layer 4 is provided on the lower side.
上記圧縮ゴム層4には、一層の軟質ゴム層5が
設けられ、該軟質ゴム層5にはベルト幅方向のス
ダレコード6が埋設されている。このスダレコー
ド6の直径dに対する軟質ゴム層5の厚さtの比
率t/d(第3図参照)は、後述する試験結果か
ら明らかなように、1.1〜2.0の範囲内にあること
が望ましい。 The compressed rubber layer 4 is provided with one soft rubber layer 5, and a string record 6 in the belt width direction is embedded in the soft rubber layer 5. As is clear from the test results described later, the ratio t/d of the thickness t of the soft rubber layer 5 to the diameter d of the Suda record 6 is preferably within the range of 1.1 to 2.0. .
上記圧縮ゴム層4の下部には、屈曲性向上のた
めにコグ7が形成され、伸長ゴム部3の上側には
織布層8が積層されている。また、抗張体層2
は、接着ゴム9中に心体コード10がスパイラル
状に埋設されている。 A cog 7 is formed at the bottom of the compressed rubber layer 4 to improve flexibility, and a woven fabric layer 8 is laminated above the elongated rubber section 3. In addition, tensile layer 2
In this case, a core cord 10 is embedded in adhesive rubber 9 in a spiral shape.
続いて、上記本考案の伝動ベルト1(A形36)
を、従来形の伝動ベルト(軟質ゴム層5がない点
を除けば本考案形と同一)とを比較した試験結果
について説明する。 Next, the power transmission belt 1 of the present invention (A type 36)
The results of a test comparing this with a conventional type power transmission belt (same as the inventive type except that it does not have the soft rubber layer 5) will be explained.
試験方法
第4図に示すように、駆動プーリ21(直径95
mm,6000rpm)、従動プーリ23(直径95mm,
10PS)及びテンシヨンプーリ24(セツトウエ
イト60Kg)に対し、試料ベルト25を巻回し、走
行試験を行つた。Test method As shown in Figure 4, the drive pulley 21 (diameter 95
mm, 6000rpm), driven pulley 23 (diameter 95mm,
The sample belt 25 was wound around the tension pulley 24 (set weight: 60 kg) and a running test was conducted.
なお、本試験においては、スダレコードの接合
界面にクラツクが発生する時間をベルト寿命と
し、従来形の伝動ベルトのベルト寿命お100とし
た場合の比率で本考案形の伝動ベルトのベルト寿
命を表わし、評価した。 In addition, in this test, the belt life is defined as the time when a crack occurs at the joining interface of the Suda record, and the belt life of the inventive power transmission belt is expressed as a ratio when the belt life of the conventional power transmission belt is set as 100. ,evaluated.
試験結果
圧縮ゴム層4と軟質ゴム層5との硬度差のベ
ルト寿命に対する影響
第5図に示す通りである。すなわち、上記硬度
差は、5度以上であることが望ましい。なお、試
料ベルトにおいて、スダレコード6の直径に対す
る軟質ゴム層5の厚さの比率t1/dは1.3(固定)
とし、軟質ゴム層5に対する短繊維の混入率は0
である。Test Results: Effect of difference in hardness between compressed rubber layer 4 and soft rubber layer 5 on belt life as shown in FIG. That is, it is desirable that the hardness difference is 5 degrees or more. In addition, in the sample belt, the ratio t 1 /d of the thickness of the soft rubber layer 5 to the diameter of the Suda record 6 is 1.3 (fixed).
The mixing rate of short fibers in the soft rubber layer 5 is 0.
It is.
軟質ゴム層5における短繊維混入率のベルト
寿命に対する影響
第6図に示す通りである。すなわち、ゴム配合
物100重量%に対し短繊維は、6重量%以下混入
されていることが望ましい。なお、試料ベルト
は、スダレコード6の直径に対する軟質ゴム層の
厚さの比率t1/dは1.3(固定)で、圧縮ゴム層4
を構成するゴムよりも軟質ゴム層5を構成するゴ
ムの方が、JISA硬度で9度だけ柔らかくしてい
る。 The influence of the proportion of short fibers in the soft rubber layer 5 on the belt life is shown in FIG. That is, it is desirable that the short fibers be mixed in an amount of 6% by weight or less based on 100% by weight of the rubber compound. The sample belt has a ratio t 1 /d of the thickness of the soft rubber layer to the diameter of the Suda record 6 of 1.3 (fixed), and the compressed rubber layer 4
The rubber that makes up the soft rubber layer 5 is softer by 9 degrees on the JISA hardness scale than the rubber that makes up the soft rubber layer 5.
スダレコード6の直径dに対する軟質ゴム層
5の厚さtの比率d/tのベルト寿命に対する
影響
第7図に示す通りである。すなわち、上記比率
は1.1〜2.0、好ましくは1.1〜1.5の範囲内である
ことが望ましい。なお、試料ベルトは、圧縮ゴム
層4を構成するゴムよりも軟質ゴム層5を構成す
るゴムの方が、JISA硬度で9度だけ柔らかく、
軟質ゴム層5への短繊維の混入率は0である。 The influence of the ratio d/t of the thickness t of the soft rubber layer 5 to the diameter d of the diameter record 6 on the belt life is shown in FIG. That is, it is desirable that the above ratio is in the range of 1.1 to 2.0, preferably 1.1 to 1.5. In addition, in the sample belt, the rubber that makes up the soft rubber layer 5 is softer by 9 degrees on the JISA hardness scale than the rubber that makes up the compressed rubber layer 4.
The proportion of short fibers mixed into the soft rubber layer 5 is zero.
上記実施例においては、スダレコード6が、心
体コード10が埋設されている平面と略平行な面
内に埋設されているが、第8図に示すように、軟
質ゴム層31を、抗張体層2とコグ7最下面との
間を略2分する部位を通りかつコグ波形が同周期
で該コグ波形の高低に同調した波線に沿つて設
け、上記軟質ゴム層31をスダレコード32をベ
ルト幅方向に埋設するようにしてもよい。 In the above embodiment, the cord 6 is buried in a plane substantially parallel to the plane in which the core cord 10 is buried, but as shown in FIG. 8, the soft rubber layer 31 is The soft rubber layer 31 is provided along a wavy line that approximately bisects between the body layer 2 and the lowermost surface of the cog 7 and is synchronized with the height of the cog waveform at the same period. It may also be buried in the belt width direction.
上記実施例においては、コグを備えたローエツ
ジVベルトに適用した例について説明したが、本
考案は、通常のローエツジVベルトは勿論、平ベ
ルト、Vリブドベルトに対しても適用することが
できる。 In the above embodiment, an example was explained in which the invention was applied to a low-edge V-belt equipped with cogs, but the present invention can be applied not only to a normal low-edge V-belt but also to a flat belt and a V-ribbed belt.
(考案の効果)
本考案は上記のように構成したから、特定のゴ
ム硬度及び層厚さの軟質ゴム層によつてスダレコ
ードの圧縮ゴム層への接着性が向上し、接合界面
での疲労破壊が抑制され、ベルト寿命の向上が図
れる。(Effects of the invention) Since the invention is constructed as described above, the adhesion of SudaRecord to the compressed rubber layer is improved by the soft rubber layer having a specific rubber hardness and layer thickness, and fatigue at the bonding interface is improved. Breakage is suppressed and belt life can be improved.
第1図乃至第8図は本考案の実施例を示すもの
で、第1図は伝動ベルトの断面図、第2図は同側
面図、第3図は軟質ゴム層の厚さとスダレコード
の直径との関係の説明図、第4図は試験装置の説
明図、第5図乃至第7図はそれぞれ試験結果を示
す図、第8図は変形例の側面図、第9図は従来例
の作用の説明図である。
1……伝動ベルト、2……抗張体層、3……伸
長ゴム層、4……圧縮ゴム層、5,31……軟質
ゴム層、6,32……スダレコード。
Figures 1 to 8 show an embodiment of the present invention, in which Figure 1 is a cross-sectional view of the power transmission belt, Figure 2 is a side view of the same, and Figure 3 is the thickness of the soft rubber layer and the diameter of the Suda record. FIG. 4 is an explanatory diagram of the test device, FIGS. 5 to 7 are diagrams showing the test results, FIG. 8 is a side view of the modified example, and FIG. 9 is the effect of the conventional example. FIG. DESCRIPTION OF SYMBOLS 1... Transmission belt, 2... Tensile layer, 3... Extension rubber layer, 4... Compression rubber layer, 5, 31... Soft rubber layer, 6, 32... Suda record.
Claims (1)
設されてなる抗張体層の上側に伸長ゴム層を、
下側に圧縮ゴム層をそれぞれ有するベルトであ
つて、前記圧縮ゴム層に少なくとも一層以上の
軟質ゴム層が設けられ、該軟質ゴム層にベルト
幅方向のスダレコードが埋設されてなり、上記
軟質ゴム層を構成するゴムは、圧縮ゴム層を構
成するゴムよりもJISA硬度が5度以上低く、
上記軟質ゴム層は厚さがスダレコードの直径の
1.1〜2.0倍であることを特徴とする伝動ベル
ト。 (2) 軟質ゴム層を構成するゴムは、ゴム配合物の
短繊維が混入されていて、ゴム配合物100重量
%に対し短繊維が6重量%以下であるところの
実用新案登録請求の範囲第1項記載の伝動ベル
ト。[Scope of Claim for Utility Model Registration] (1) An elongated rubber layer on the upper side of a tensile layer consisting of a core cord embedded in an adhesive rubber in a spiral shape,
The belt has a compressed rubber layer on the lower side, and the compressed rubber layer is provided with at least one soft rubber layer, and a string record in the width direction of the belt is embedded in the soft rubber layer, and the soft rubber The rubber that makes up the layer has a JISA hardness that is at least 5 degrees lower than the rubber that makes up the compressed rubber layer.
The thickness of the above soft rubber layer is equal to the diameter of the Suda record.
A power transmission belt characterized by 1.1 to 2.0 times. (2) The rubber constituting the soft rubber layer contains short fibers from a rubber compound, and the amount of short fibers is 6% by weight or less based on 100% by weight of the rubber compound, which is the scope of the utility model registration claim. The power transmission belt according to item 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12955684U JPS6144051U (en) | 1984-08-27 | 1984-08-27 | power transmission belt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12955684U JPS6144051U (en) | 1984-08-27 | 1984-08-27 | power transmission belt |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6144051U JPS6144051U (en) | 1986-03-24 |
JPH0454353Y2 true JPH0454353Y2 (en) | 1992-12-21 |
Family
ID=30688173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12955684U Granted JPS6144051U (en) | 1984-08-27 | 1984-08-27 | power transmission belt |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6144051U (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2512652Y2 (en) * | 1989-06-13 | 1996-10-02 | 京葉瓦斯株式会社 | Gas stopper mounting device and fixture |
JP2009287697A (en) * | 2008-05-30 | 2009-12-10 | Mitsuboshi Belting Ltd | High-load transmitting belt |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5144823U (en) * | 1974-09-30 | 1976-04-02 | ||
JPS56933B2 (en) * | 1975-02-19 | 1981-01-10 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3919892A (en) * | 1974-08-12 | 1975-11-18 | Dayco Corp | Endless power transmission belt structure |
-
1984
- 1984-08-27 JP JP12955684U patent/JPS6144051U/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5144823U (en) * | 1974-09-30 | 1976-04-02 | ||
JPS56933B2 (en) * | 1975-02-19 | 1981-01-10 |
Also Published As
Publication number | Publication date |
---|---|
JPS6144051U (en) | 1986-03-24 |
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