JPH0611400Y2 - V belt for high load transmission - Google Patents

V belt for high load transmission

Info

Publication number
JPH0611400Y2
JPH0611400Y2 JP1989029980U JP2998089U JPH0611400Y2 JP H0611400 Y2 JPH0611400 Y2 JP H0611400Y2 JP 1989029980 U JP1989029980 U JP 1989029980U JP 2998089 U JP2998089 U JP 2998089U JP H0611400 Y2 JPH0611400 Y2 JP H0611400Y2
Authority
JP
Japan
Prior art keywords
belt
shape
tension band
retaining layer
portions
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 - Lifetime
Application number
JP1989029980U
Other languages
Japanese (ja)
Other versions
JPH02121650U (en
Inventor
宏 松岡
英一郎 池田
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.)
Bando Chemical Industries Ltd
Original Assignee
Bando Chemical Industries 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 Bando Chemical Industries Ltd filed Critical Bando Chemical Industries Ltd
Priority to JP1989029980U priority Critical patent/JPH0611400Y2/en
Publication of JPH02121650U publication Critical patent/JPH02121650U/ja
Application granted granted Critical
Publication of JPH0611400Y2 publication Critical patent/JPH0611400Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G5/00—V-belts, i.e. belts of tapered cross-section
    • F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts
    • F16G5/166—V-belts, i.e. belts of tapered cross-section consisting of several parts with non-metallic rings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Description

【考案の詳細な説明】 （産業上の利用分野） 本考案は、自動車等の無段変速装置に使用される高負荷
伝動用のＶベルトの改良技術に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a technique for improving a V-belt for high load transmission used in a continuously variable transmission such as an automobile.

（従来の技術） 従来より、自動車或いはコンバインやトラクタ等の農業
用機械等における変速装置は、歯車式又は流体式のもの
が一般に広く使用されているが、近年、変速時の操作性
の向上、燃費の向上等を目的としてベルト式無段変速装
置の開発が進められている。(Prior Art) Conventionally, a gear type or a fluid type is generally widely used as a transmission in an automobile or a combine machine, an agricultural machine such as a tractor, etc., but in recent years, improvement in operability at the time of shifting, Belt type continuously variable transmissions are being developed for the purpose of improving fuel efficiency.

しかし、このベルト式無段変速装置に使用されるベルト
は極めて高いトルクの伝動能力を必要とし、従来の一般
的なゴム製のＶベルトでは高い側圧に耐えきれず、座屈
変形を生じて使用することができない。However, the belt used in this belt type continuously variable transmission requires an extremely high torque transmission capability, and conventional conventional V belts made of rubber cannot withstand a high lateral pressure and cause buckling deformation. Can not do it.

そこで、従来、斯かる要求を満足させるべく、各種の高
負荷伝動用ベルトが知られている（例えば特開昭４６−
４８６１号、特開昭５５−２７５９５号、特開昭５９−
７７１４７号、特開昭６０−４９１５１号の各公報参
照）。Therefore, conventionally, various high load transmission belts have been known in order to satisfy such requirements (for example, Japanese Patent Application Laid-Open No. 46-46).
4861, JP-A-55-27595, JP-A-59-
77147, JP-A-60-49151).

また、本出願人にあっては、第１０図に示すように、繊
維強化ゴムや繊維強化プラスチック等からなる保形層
２′の上下中央部に複数の心線３′，３′，…を埋設し
てなるエンドレスの張力帯１′と、該張力帯１′を嵌合
する嵌合部７′を有するとともに、左右側面にプーリの
ベルト溝面に当接する当接部８′，８′を有する多数の
ブロック６′，６′，…とで構成され、上記張力帯１′
の上下面及び各ブロック６′の嵌合部７′の上下面にそ
れぞれ互いに対応する嵌合可能な凹凸部を形成し、この
張力帯１′及び各ブロック６′の凹凸部同士を互いに係
合させて、ブロック６′，６′，…を張力帯１′に対し
ベルト長手方向に係止固定してなるブロックベルトと呼
ぶ高負荷伝動用Ｖベルトを提案している（特許第１４４
１８９５号、特開昭６１−２０６８４７号公報、実開昭
６２−５４３４８号公報参照）。Further, the applicant of the present invention, as shown in FIG. 10, has a plurality of core wires 3 ′, 3 ′, ... at the upper and lower central portions of the shape-retaining layer 2 ′ made of fiber reinforced rubber or fiber reinforced plastic. It has a buried endless tension band 1'and a fitting part 7'for fitting the tension band 1 ', and abutting parts 8', 8'for abutting the belt groove surface of the pulley on the left and right side surfaces. And a plurality of blocks 6 ', 6', ...
Engaging concave and convex portions corresponding to each other are formed on the upper and lower surfaces of the block 6'and the upper and lower surfaces of the fitting portion 7'of each block 6 ', and the convex and concave portions of the tension band 1'and each block 6'are engaged with each other. Then, a high load transmission V-belt called a block belt is proposed, in which the blocks 6 ', 6', ... are locked and fixed to the tension band 1'in the belt longitudinal direction (Patent No. 144).
1895, Japanese Patent Laid-Open No. 61-206847, and Japanese Utility Model Laid-Open No. 62-54348).

（考案が解決しようとする課題） ところで、このように張力帯１′と各ブロック６′とが
各々の凹凸部により係止固定されて動力を伝達するよう
にしたベルトにおいては、第１１図（ａ）に示すよう
に、ベルトがある曲率に曲げられると、張力帯１′の凸
部がその両側のブロック６′，６′によって挟まれて圧
縮するような変形が生じる。また、この曲げに加え、ベ
ルトにトルクが加わったときには、同図（ｂ）に示す如
く、張力帯１′の凹凸部にブロック６′からベルト長さ
方向に沿って剪断力が加えられるので、張力帯１′には
圧縮力と剪断力との双方が作用する（これらの力を図で
は矢印にて示している）。尚、これら圧縮力や剪断力
は、張力帯においてベルトが屈曲されるときに内側にな
る下部が大きくなる。(Problems to be solved by the invention) By the way, in the belt in which the tension band 1'and each block 6'is locked and fixed by the respective concave and convex portions to transmit power, as shown in FIG. As shown in a), when the belt is bent to a certain curvature, a deformation occurs such that the convex portion of the tension band 1'is sandwiched by the blocks 6 ', 6'on both sides thereof and compressed. In addition to this bending, when torque is applied to the belt, shearing force is applied from the block 6 ′ along the belt length direction to the uneven portion of the tension band 1 ′, as shown in FIG. Both a compressive force and a shearing force act on the tension band 1 '(these forces are indicated by arrows in the figure). Incidentally, these compressive force and shearing force become large in the lower part that is inside when the belt is bent in the tension band.

しかし、上記張力帯１′における保形層２′の繊維は通
常、ベルト幅方向（ベルト長さ方向と直交する方向）に
配向されており、このため、上記ブロック６′からの圧
縮力及び剪断力を受けたときには、その変形が大きい。
そして、このように変形が大きいときには、圧縮永久歪
が生じてブロック６′と張力帯１′との嵌合が緩くな
り、両者間にがたが発生して張力帯１′のブロック６′
を保持する力が低下する。その結果、ブロック６′が振
れ易くなって摩擦熱が増大し、ベルトが発熱して張力帯
１′の保形層２′が硬化ないし劣化し、ついにはベルト
の破壊に至る虞れがある。このことは特に、発熱量の大
きい高速運転時に顕著であり、改良が望ましい。However, the fibers of the shape-retaining layer 2'in the tension band 1'are usually oriented in the belt width direction (the direction orthogonal to the belt length direction), so that the compressive force and the shear force from the block 6'are applied. When it receives a force, its deformation is great.
When the deformation is large as described above, the compression set is generated and the fitting between the block 6'and the tension band 1'is loosened, and rattling occurs between the two, resulting in the block 6'of the tension band 1 '.
The ability to hold is reduced. As a result, the block 6'is easily shaken, frictional heat is increased, the belt is heated, the shape-retaining layer 2'of the tension band 1'is hardened or deteriorated, and there is a possibility that the belt is eventually broken. This is particularly noticeable during high-speed operation with a large amount of heat generation, and improvement is desirable.

本考案は斯かる点に鑑みてなされたもので、その主な目
的は、上記の如きブロックベルトに対しそのスムーズな
屈曲を可能としながら、各ブロックから張力帯の下部保
形層に加えられるベルト長さ方向の圧縮力及び剪断力に
対する圧縮永久歪を小さく抑えるようにし、ベルトの高
速運転時の耐久性を向上させることにある。The present invention has been made in view of the above problems, and its main purpose is to add a belt from each block to the lower shape-retaining layer of the tension band while allowing the block belt to smoothly bend. It is intended to suppress the compression set against the compressive force and the shearing force in the length direction to be small, and to improve the durability of the belt during high-speed operation.

（課題を解決するための手段） この目的の達成のため、請求項(1)記載の考案の解決手
段は、基本的に、張力帯を形成する下部保形層における
繊維の配向をベルト長さ方向でかつ係合部に沿った方向
とする。(Means for Solving the Problem) In order to achieve this object, the solution means of the invention according to claim (1) is basically such that the orientation of the fibers in the lower shape-retaining layer forming the tension band is determined by the belt length. Direction and along the engaging portion.

すなわち、この考案では、上下面にそれぞれ多数の係合
部が上下に対応してかつ長手方向に並んで形成された保
形層、及び該保形層の上下中央部に埋設された長手方向
に延びる複数の心線を有するエンドレスの張力帯と、該
張力帯を嵌合する嵌合部を有し、該嵌合部の上下面にそ
れぞれ上記張力帯上下面の係合部に係合する係止部が形
成され、外側面にプーリのベルト溝面に当接する当接部
を有する多数のブロックとを備え、張力帯の係合部と各
ブロックの係止部との係合によりブロックを張力帯に対
しベルト長手方向に係止固定してなるＶベルトが対象で
ある。That is, according to the present invention, a shape-retaining layer having a plurality of engaging portions on the upper and lower surfaces, which are vertically aligned and arranged in the longitudinal direction, and in the longitudinal direction embedded in the upper and lower central portions of the shape-retaining layer. An endless tension band having a plurality of extending core wires and a fitting part for fitting the tension band, and a member for engaging with the engaging parts on the upper and lower surfaces of the tension band on the upper and lower surfaces of the fitting part, respectively. A plurality of blocks each having a stop portion and an abutting portion that abuts the belt groove surface of the pulley on the outer surface are provided, and the block is tensioned by the engaging portion of the tension band and the engaging portion of each block. The target is a V-belt that is locked and fixed to the belt in the belt longitudinal direction.

そして、その特徴は、上記張力帯の保形層を繊維強化ゴ
ム又は繊維強化プラスチックで構成して、その心線より
も下側の下部保形層における少なくとも下部の繊維を、
ベルト上下方向から見てベルト長さ方向に一致しかつベ
ルト幅方向から見て張力帯下面の係合部に沿った方向に
配向させていることである。And, the characteristic is that the shape-retaining layer of the tension band is composed of fiber-reinforced rubber or fiber-reinforced plastic, and at least the lower fiber in the lower shape-retaining layer below the core wire,
That is, they are oriented in a direction that coincides with the belt length direction when viewed from the belt up-down direction and along the engaging portion on the lower surface of the tension band when viewed from the belt width direction.

（作用） この構成により、請求項(1)記載の考案では、張力帯を
形成する保形層が繊維強化ゴム又は繊維強化プラスチッ
クで構成され、その下部保形層の少なくとも下部の繊維
の配向がベルト長さ方向とされているので、ベルトの曲
げ及びトルクの作用によってブロックから張力帯に圧縮
荷重及び剪断荷重が加えられたとき、上記ベルト長さ方
向の繊維配向を有する下部保形層下部の変形は、繊維を
ベルト幅方向に配列した場合に比べて小さくなる。しか
も、上記下部保形層における少なくとも下部の繊維のみ
が、ベルト幅方向から見て下部保形層下面の下側係合部
に沿って配向されているので、ベルトをスムーズに屈曲
させることができる。(Operation) With this configuration, in the device according to claim (1), the shape-retaining layer forming the tension band is made of fiber-reinforced rubber or fiber-reinforced plastic, and the orientation of at least the lower fiber of the lower shape-retaining layer is Since it is in the belt length direction, when a compressive load and a shear load are applied to the tension band from the block by the action of bending and torque of the belt, the lower shape retention layer having the fiber orientation in the belt length direction is The deformation is smaller than when the fibers are arranged in the belt width direction. Moreover, since at least the lower fibers of the lower shape-retaining layer are oriented along the lower engaging portion of the lower surface of the lower shape-retaining layer when viewed in the belt width direction, the belt can be smoothly bent. .

上記下部保形層の変形について図面によって説明する
に、第５図〜第９図は、保形層を形成する例えば繊維強
化ゴムに圧縮又は剪断荷重（Ｆにて示す）を加えたとき
の該ゴムの変形状態をその繊維の配向と関連付けて示し
たものである（これらの図では、図（ｂ）はゴムを図
（ａ）の矢印Ｂ方向から、また図（ｃ）は同Ｃ方向から
それぞれ見た図を示す）。第５図（ａ）に示す如く、ゴ
ムにその繊維配向と直角方向から圧縮荷重Ｆが加えられ
ると、同図（ｂ）及び（ｃ）に示す如く、ゴムは繊維配
列方向ではなくて荷重Ｆの作用する方向と直交する方向
に膨出変形しながら縮む。一方、第６図（ａ）に示す如
く、ゴムにその繊維配向から圧縮荷重Ｆが加えられる
と、同図（ｂ）及び（ｃ）に示す如く、ゴムは荷重Ｆの
作用する方向と直交する２つの方向に膨出しながら縮
む。そして、本考案の繊維配向では、第５図（ａ）に示
すゴムの圧縮時に矢印Ｂ方向から見た状態となり、その
変形量（第５図（ｂ）の左右方向への膨出量）は小さ
い。これに対し、従来の繊維配向では、矢印Ｃ方向から
見た状態で、その変形量（第５図（ｃ）の左右方向への
膨出量）は大きい。The deformation of the lower shape-retaining layer will be described with reference to the drawings. FIGS. 5 to 9 show the deformation of the shape-retaining layer when a compressive or shear load (shown by F) is applied to the fiber-reinforced rubber. The deformation state of the rubber is shown in relation to the orientation of its fibers (in these figures, the figure (b) shows the rubber from the direction of arrow B in the figure (a), and the figure (c) shows from the same direction C). Shown are the figures seen respectively. As shown in FIG. 5 (a), when a compressive load F is applied to the rubber in a direction perpendicular to the fiber orientation, as shown in FIGS. 5 (b) and (c), the rubber is not in the fiber arrangement direction but in the load F. Contracts while bulging and deforming in a direction orthogonal to the direction in which On the other hand, when a compressive load F is applied to the rubber due to its fiber orientation as shown in FIG. 6 (a), the rubber is orthogonal to the direction in which the load F acts, as shown in FIGS. 6 (b) and (c). Shrinks while bulging in two directions. With the fiber orientation of the present invention, when the rubber shown in FIG. 5 (a) is compressed, it is in a state seen from the direction of arrow B, and its deformation amount (a bulging amount in the left-right direction in FIG. 5 (b)) is small. On the other hand, in the conventional fiber orientation, the amount of deformation (the amount of bulging in the left-right direction in FIG. 5C) when viewed from the direction of arrow C is large.

一方、第７図は繊維強化ゴムにその繊維配向と直角な一
方向から剪断荷重Ｆを加えた状態を、また第８図は繊維
強化ゴムにその繊維配向から剪断荷重Ｆを加えた状態
を、さらに第９図は繊維強化ゴムにその繊維配向と直角
な他方向から剪断荷重Ｆを加えた状態をそれぞれ示し、
いずれもゴムは荷重方向と同じ方向にずれるように変形
するが、その変形は第９図に示す状態が最も大きく、第
８図に示す状態が最も小さくなる。そして、本考案の繊
維配向では、保形層は剪断荷重Ｆに対して第８図に示す
状態となって変形（第８図（ｂ）の左右方向への変形）
が小さく抑えられる。従来のものでは第９図に示す状態
となる。従って、このように保形層の変形が小さくなる
結果、保形層の圧縮永久歪が小さくなり、ブロックと張
力帯との間のがたの発生が抑えられて、走行中のベルト
の発熱が生じ難くなり、よって高速運転時のベルトの耐
久性を高めることができる。On the other hand, FIG. 7 shows a state in which a shear load F is applied to the fiber reinforced rubber from one direction perpendicular to the fiber orientation, and FIG. 8 shows a state in which the shear load F is applied to the fiber reinforced rubber from the fiber orientation, Further, FIG. 9 shows a state in which a shear load F is applied to the fiber reinforced rubber from another direction perpendicular to the fiber orientation,
In either case, the rubber is deformed so as to be displaced in the same direction as the load direction. The deformation is greatest in the state shown in FIG. 9 and smallest in the state shown in FIG. In the fiber orientation of the present invention, the shape-retaining layer is deformed in the state shown in Fig. 8 with respect to the shear load F (deformation in the left-right direction of Fig. 8 (b)).
Can be kept small. With the conventional one, the state shown in FIG. 9 is obtained. Therefore, as a result of the small deformation of the shape-retaining layer in this way, the compression set of the shape-retaining layer becomes small, the rattling between the block and the tension band is suppressed, and the heat generated by the belt during running is reduced. It is less likely to occur, so that the durability of the belt during high speed operation can be improved.

（実施例） 以下、本考案の実施例について説明する。(Example) Hereinafter, the Example of this invention is described.

第１図及び第２図は本考案の一実施例に係るＶベルトＡ
１を示す。このベルトＡ１は、左右一対の平ベルトから
なるエンドレスの張力帯１，１に多数のブロック６，
６，…を係止固定したものである。上記各張力帯１は、
繊維強化ゴム又は繊維強化プラスチックからなる保形層
２と、該保形層２の上下中央部にベルト幅方向に並んで
埋設された長手方向に延びる複数の心線３，３，…とで
構成され、保形層２は心線３の位置を境として上部及び
下部保形層２ａ，２ｂに分けられている。また、保形層
２の上面にはその幅方向に延びる一定ピッチの係合部と
しての多数の凹溝４，４，…が、下面には上記上面の凹
溝４，４，…に対応してその幅方向に延びる一定ピッチ
の係合部としての凹溝５，５，…がそれぞれベルト長さ
方向に並んで形成されている。1 and 2 show a V-belt A according to an embodiment of the present invention.
1 is shown. This belt A 1 is composed of a pair of left and right flat belts, endless tension bands 1, 1 and a large number of blocks 6,
6, ... are locked and fixed. Each of the above tension bands 1
The shape-retaining layer 2 made of fiber-reinforced rubber or fiber-reinforced plastic, and a plurality of longitudinally extending core wires 3, 3, ... The shape-retaining layer 2 is divided into upper and lower shape-retaining layers 2a and 2b with the position of the core wire 3 as a boundary. Further, the upper surface of the shape-retaining layer 2 has a large number of recessed grooves 4, 4, ... As an engaging portion extending in the width direction thereof, and the lower surface thereof corresponds to the recessed grooves 4, 4 ,. The concave grooves 5, 5, ... As engaging portions having a constant pitch and extending in the width direction thereof are formed side by side in the belt length direction.

一方、上記各ブロック６は、左右外側部に上記各張力帯
１を幅方向から着脱可能に嵌装せしめる切欠き状の嵌合
部７，７を有するとともに、左右側面に図外のプーリの
ベルト溝面に当接する当接部８，８を有する。上記各嵌
合部７の上壁面には上記張力帯１上面の各凹溝４に嵌合
する係止部としての凸条９が、嵌合部７の下壁面には張
力帯１下面の各凹溝５に嵌合する係止部としての凸条１
０がそれぞれ形成されている。そして、これらの凸条
９，１０をそれぞれ張力帯１の凹溝４，５に係合せしめ
て各ブロック６の嵌合部７，７にそれぞれ張力帯１，１
を嵌合することで、ブロック６，６，…が張力帯１，１
に対しベルト長さ方向に連続的に係止固定されている。On the other hand, each of the blocks 6 has notch-shaped fitting portions 7 on which the tension bands 1 are detachably fitted from the width direction on the left and right outer portions, and the belt of a pulley (not shown) is provided on the left and right side surfaces. It has abutting portions 8, 8 that abut the groove surface. On the upper wall surface of each fitting portion 7, there is a protrusion 9 as a locking portion that fits into each groove 4 on the upper surface of the tension band 1, and on the lower wall surface of the fitting portion 7 is each of the lower surface of the tension band 1. Convex strip 1 as a locking part that fits in the groove 5
0 is formed respectively. Then, these ridges 9 and 10 are engaged with the recessed grooves 4 and 5 of the tension band 1, respectively, and the tension bands 1 and 1 are respectively attached to the fitting portions 7 and 7 of the blocks 6.
When the blocks 6, 6, ...
In contrast, the belt is continuously locked and fixed in the belt length direction.

さらに、本考案の特徴として、第１図に示すように、上
記各張力帯１の繊維強化ゴム又は繊維強化プラスチック
で構成されている保形層２の下部保形層２ｂ下部の繊維
は、ベルト上下方向から見てベルト長さ方向に一致しか
つベルト幅方向から見て保形層２ｂ下面の凹溝５の形状
に沿うように配向され、他の部分つまり下部保形層２ｂ
の上部及び上部保形層２ａでは、繊維はベルト幅方向に
配向されている。Further, as a feature of the present invention, as shown in FIG. 1, the fibers under the lower shape-retaining layer 2b of the shape-retaining layer 2 made of the fiber-reinforced rubber or the fiber-reinforced plastic of each of the tension bands 1 are the belt. The shape is aligned with the shape of the concave groove 5 on the lower surface of the shape-retaining layer 2b when it is aligned with the belt length direction when viewed from the up-and-down direction and when viewed from the belt width direction.
In the upper and upper shape-retaining layers 2a, the fibers are oriented in the belt width direction.

したがって、上記実施例においては、ベルトＡ１の走行
時、その曲げ及びトルクの作用により各ブロック６から
張力帯１，１に圧縮荷重及び剪断荷重が加えられると、
該各張力帯１の保形層２は変形する。しかし、該保形層
２は繊維強化ゴム又は繊維強化プラスチックからなり、
その下部保形層２ｂ下部の繊維の配向がベルト長さ方向
とされているので、下部保形層２ｂの変形は繊維をベル
ト幅方向に配列した場合に比べて小さくなる（第５図
（ｂ）及び第８図参照）。このため、上記圧縮荷重及び
剪断荷重を繰り返し受けても下部保形層２ｂの圧縮永久
歪は小さく、ブロック６と張力帯１との間のがたの発生
が抑えられ、ブロック６は張力帯１に安定して強固に保
持されて振れ難くなり、両者間の摩擦熱が低く抑えられ
て張力帯１の硬化、劣化が少なくなり、よって高速運転
時であってもベルトＡ１の耐久性を高めることができ
る。Therefore, in the above-described embodiment, when the belt A 1 is running, a compressive load and a shear load are applied to the tension bands 1 and 1 from each block 6 by the action of bending and torque,
The shape-retaining layer 2 of each tension band 1 is deformed. However, the shape-retaining layer 2 is made of fiber reinforced rubber or fiber reinforced plastic,
Since the orientation of the fibers below the lower shape-retaining layer 2b is in the belt length direction, the deformation of the lower shape-retaining layer 2b is smaller than when the fibers are arranged in the belt width direction (see FIG. 5 (b). ) And FIG. 8). Therefore, the compression set of the lower shape-retaining layer 2b is small even when the above compressive load and shear load are repeatedly applied, and rattling between the block 6 and the tension band 1 is suppressed. Stable and strongly held and difficult to shake, and the frictional heat between the two is suppressed to a low level, so that the tension band 1 is less hardened and deteriorated. Therefore, the durability of the belt A 1 is enhanced even during high-speed operation. be able to.

しかも、上記下部保形層２ｂ下部の繊維のみが、ベルト
幅方向から見て下部保形層２ｂ下面の凹溝５に沿って配
向され、その他の部分では繊維がベルト幅方向に配向さ
れているので、ベルトＡ１はスムーズに屈曲することと
なり、その良好な屈曲性が確保される。Moreover, only the fibers under the lower shape-retaining layer 2b are oriented along the concave grooves 5 on the lower surface of the lower shape-retaining layer 2b when viewed from the belt width direction, and the fibers are oriented in the belt width direction in other portions. Therefore, the belt A 1 bends smoothly, and its good bendability is secured.

尚、上記実施例では、ベルトＡ１の下部保形層２ｂ下部
のみの繊維配向を限定して凹溝５の形状に沿うように配
列したが、第３図に示す如く、ベルトＡ２の下部保形層
２ｂ全体における繊維をベルト上下方向から見てベルト
長さ方向でかつベルト幅方向から見て凹溝５の形状に沿
うように配列してもよい。In the above embodiment has been arranged so as to conform to the shape of the groove 5 by limiting the fiber orientation of the lower Hokatachiso 2b bottom only of the belt A 1, as shown in FIG. 3, the lower portion of the belt A 2 The fibers in the entire shape-retaining layer 2b may be arranged so as to follow the shape of the groove 5 in the belt length direction when viewed from the belt vertical direction and when viewed from the belt width direction.

また、第４図に示す如く、ベルトＡ３の張力帯１におけ
る下部保形層２ｂの下面に帆布層１１を設けてもよい。
また、この帆布層は上部保形層２ａの上面に設けてもよ
く、いずれの場合でも、帆布層１１により保形層２の凹
溝５（又は４）が覆われるので、張力帯１の耐磨耗性を
向上させることができる。Further, as shown in FIG. 4, the canvas layer 11 may be provided on the lower surface of the lower Hokatachiso 2b in tension band 1 of the belt A 3.
This canvas layer may be provided on the upper surface of the upper shape-retaining layer 2a. In any case, since the groove 5 (or 4) of the shape-retaining layer 2 is covered with the canvas layer 11, the resistance of the tension band 1 is reduced. Wearability can be improved.

（考案の効果） 以上説明したように、請求項(1)記載の考案によると、
上下面にそれぞれ上下に対応する係合部が長手方向に並
んで形成された保形層及びその内部に埋設された心線か
らなる張力帯と、該張力帯を嵌合する嵌合部を有し、か
つ該嵌合部の上下面にそれぞれ上記張力帯上下面の係合
部に係合する係止部が形成された多数のブロックとから
なり、張力帯の係合部と各ブロックの係止部との係合に
より、ブロックを張力帯に対しベルト長手方向に係止固
定してなるＶベルトに対し、張力帯の保形層を繊維強化
ゴム又は繊維強化プラスチックで構成して、その下部保
形層の少なくとも下部の繊維の配向をベルト上下方向か
ら見てベルト長さ方向でかつベルト幅方向から見て下側
保形層下面の係合部に沿った方向としたことにより、Ｖ
ベルトのスムーズな屈曲を確保しつつ、ブロックから張
力帯下部にベルト長さ方向の圧縮荷重及び剪断荷重が加
えられたときの下部保形層の変形を抑えてその圧縮永久
歪を小さくでき、ブロックと張力帯との間のがたの発生
によるベルトの発熱を低くして高速運転時のベルトの耐
久性を高めることができる。(Effect of device) As described above, according to the device of claim (1),
The upper and lower surfaces each have a shape-retaining layer in which vertically corresponding engaging portions are formed side by side in the longitudinal direction, a tension band composed of a core wire embedded in the shape-retaining layer, and a fitting portion for fitting the tension band. And a plurality of blocks each having an engaging portion formed on the upper and lower surfaces of the fitting portion to engage with the engaging portions on the upper and lower surfaces of the tension band, respectively. For the V-belt in which the block is locked and fixed to the tension band in the belt longitudinal direction by engaging with the stopper, the shape retaining layer of the tension band is made of fiber reinforced rubber or fiber reinforced plastic The orientation of the fibers of at least the lower portion of the shape-retaining layer is set to be the belt length direction when viewed from the belt up-down direction and the direction along the engaging portion of the lower shape-retaining layer lower surface when viewed from the belt width direction.
While ensuring the smooth bending of the belt, the compression set can be reduced by suppressing the deformation of the lower shape-retaining layer when a compressive load and a shear load in the belt length direction are applied to the lower part of the tension band from the block. It is possible to reduce the heat generation of the belt due to the occurrence of rattling between the belt and the tension band, and to enhance the durability of the belt during high-speed operation.

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

第１図及び第２図は本考案の一実施例を示し、第１図は
Ｖベルトの側面図、第２図は同斜視図である。第３図及
び第４図はそれぞれ他の実施例を示す第１図相当図であ
る。第５図〜第９図はそれぞれ繊維強化ゴムに荷重を加
えたときの変形状態を示す説明図である。第１０図は従
来のベルトを示す第１図相当図、第１１図は同ベルトの
張力帯に加えられる負荷状態を示す説明図である。 Ａ１〜Ａ３…Ｖベルト １…張力帯 ２…保形層 ２ａ…上部保形層 ２ｂ…下部保形層 ３…心線 ４，５…凹溝（係合部） ６…ブロック ７…嵌合部 ８…当接部 ９，１０…凸条（係止部） １１…帆布層1 and 2 show an embodiment of the present invention. FIG. 1 is a side view of a V-belt and FIG. 2 is a perspective view thereof. FIGS. 3 and 4 are views corresponding to FIG. 1 showing other embodiments, respectively. 5 to 9 are explanatory views showing a deformed state when a load is applied to the fiber reinforced rubber. FIG. 10 is a view corresponding to FIG. 1 showing a conventional belt, and FIG. 11 is an explanatory view showing a load state applied to a tension band of the belt. A 1 to A 3 ... V-belt 1 ... Tension band 2 ... Shape-retaining layer 2a ... Upper shape-retaining layer 2b ... Lower shape-retaining layer 3 ... Core wire 4, 5 ... Recessed groove (engaging portion) 6 ... Block 7 ... Fitting Joint part 8 ... Contact part 9, 10 ... Ridge (locking part) 11 ... Canvas layer

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】上下面にそれぞれ多数の係合部が上下に対
応してかつ長手方向に並んで形成された保形層と、該保
形層の上下中央部に埋設された長手方向に延びる複数の
心線とを有するエンドレスの張力帯と、 上記張力帯を嵌合する嵌合部を有し、該嵌合部の上下面
にそれぞれ上記張力帯上下面の係合部に係合する係止部
が形成され、外側面にプーリのベルト溝面に当接する当
接部を有する多数のブロックとを備え、 張力帯の係合部と各ブロックの係止部との係合によりブ
ロックを張力帯に対しベルト長手方向に係止固定してな
るＶベルトであって、 上記張力帯の保形層は繊維強化ゴム又は繊維強化プラス
チックで構成されていて、上記心線よりも下側の下部保
形層における少なくとも下部の繊維が、ベルト上下方向
から見てベルト長さ方向に一致しかつベルト幅方向から
見て張力体下面の係合部に沿った方向に配向されている
ことを特徴とする高負荷伝動用Ｖベルト。1. A shape-retaining layer, in which a plurality of engaging portions are formed on the upper and lower surfaces, respectively corresponding to the upper and lower sides and aligned in the longitudinal direction, and a longitudinal shape embedded in the upper and lower central portions of the shape-retaining layer and extending in the longitudinal direction. An endless tension band having a plurality of cords, and a fitting part for fitting the tension band, and an engaging member for engaging the engaging parts on the upper and lower surfaces of the tension band on the upper and lower surfaces of the fitting part, respectively. A number of blocks having stop portions and having abutment portions that come into contact with the belt groove surface of the pulley are provided on the outer surface, and the blocks are tensioned by the engagement of the tension band engagement portions and the lock portions of each block. A V-belt that is locked and fixed to the belt in the belt longitudinal direction, wherein the shape-retaining layer of the tension belt is made of fiber reinforced rubber or fiber reinforced plastic, and is a lower protective layer below the core wire. At least the fibers in the lower part of the shaping layer are in the belt length direction when viewed from the belt vertical direction. Consistent and high-load drive V-belt, characterized in that as viewed from the belt width direction are oriented in a direction along the engagement portion of the tension member lower surface.
JP1989029980U 1989-03-15 1989-03-15 V belt for high load transmission Expired - Lifetime JPH0611400Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989029980U JPH0611400Y2 (en) 1989-03-15 1989-03-15 V belt for high load transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989029980U JPH0611400Y2 (en) 1989-03-15 1989-03-15 V belt for high load transmission

Publications (2)

Publication Number Publication Date
JPH02121650U JPH02121650U (en) 1990-10-03
JPH0611400Y2 true JPH0611400Y2 (en) 1994-03-23

Family

ID=31254633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989029980U Expired - Lifetime JPH0611400Y2 (en) 1989-03-15 1989-03-15 V belt for high load transmission

Country Status (1)

Country Link
JP (1) JPH0611400Y2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0516434Y2 (en) * 1986-04-21 1993-04-30

Also Published As

Publication number Publication date
JPH02121650U (en) 1990-10-03

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