JPS6246737B2 - - Google Patents

Info

Publication number
JPS6246737B2
JPS6246737B2 JP57146780A JP14678082A JPS6246737B2 JP S6246737 B2 JPS6246737 B2 JP S6246737B2 JP 57146780 A JP57146780 A JP 57146780A JP 14678082 A JP14678082 A JP 14678082A JP S6246737 B2 JPS6246737 B2 JP S6246737B2
Authority
JP
Japan
Prior art keywords
layers
reinforcing layer
rubber
rubber bag
cords
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
Application number
JP57146780A
Other languages
Japanese (ja)
Other versions
JPS5937347A (en
Inventor
Shinichi Katori
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.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co 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 Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP57146780A priority Critical patent/JPS5937347A/en
Publication of JPS5937347A publication Critical patent/JPS5937347A/en
Publication of JPS6246737B2 publication Critical patent/JPS6246737B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/347—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation combined with compressing after the winding of lay-ups having a non-circular cross-section, e.g. flat spiral windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/564—Winding and joining, e.g. winding spirally for making non-tubular articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Laminated Bodies (AREA)
  • Diaphragms And Bellows (AREA)
  • Fluid-Damping Devices (AREA)
  • Moulding By Coating Moulds (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Bag Frames (AREA)

Description

【発明の詳細な説明】 本発明は、圧縮空気等を封入して物体を加圧し
たり、自動車用ジヤツキのような揚力を提供する
部材として利用できるほか、流・粉体のコンテナ
ー、防振・緩衝部材、浮力材等としても利用でき
るゴム袋の構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention can be used as a member for pressurizing objects by enclosing compressed air or the like, or as a member that provides lifting force such as an automobile jack, as well as as a container for liquids and powders, as a vibration-proofing member, etc. This invention relates to the structure of a rubber bag that can be used as a buffer member, buoyancy material, etc.

従来、この種のゴム袋としては、六角形をした
支承空気クツシヨン（特公昭48−12603号）や四
角形の圧縮空気平形クツシヨン（特公昭55−
22399号）が知られている。しかし、これらは、
各々、構造上、周縁部の接合部分の全部又は１部
に強度上の弱点を有する構成となつているので、
この弱点を強化する必要上、複雑な強化手段を要
し、したがつて、加工時間が長くかかり高価であ
ることと、その複雑な強化作業に起因する品質特
に強度上のばらつきが発生しやすく、信頼性にか
けるという欠点がある。 Traditionally, this type of rubber bag has been made of hexagonal bearing air cushions (Special Publication No. 12603, 1973) and rectangular compressed air flat cushions (Special Publication No. 12603, 1973).
No. 22399) is known. However, these
Each of them is structurally configured to have a strength weakness in all or part of the joint part of the peripheral part,
Due to the need to strengthen this weak point, complicated strengthening means are required, which requires a long processing time and is expensive, and variations in quality, especially strength, are likely to occur due to the complicated strengthening work. There is a drawback in terms of reliability.

そこで本発明は、このような事情にかんがみて
なされたものであつて、周縁部に強度上の弱点を
有することのないゴム袋の構造を提供することを
目的とする。 SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a rubber bag structure that does not have weak points in strength at the periphery.

このため、本発明のゴム袋の構造は、内部に形
成したキヤビテイ内で流体を気密保持するチユー
ブゴムと、それに積層した、スチールコードある
いは繊維コードを縦方向に引きそろえた補強層
と、この補強層を被覆したカバーゴムとからな
り、かつ、圧力源と連結するための接続バルブを
有するゴム袋において、ゴム袋全体が平面的にほ
ぼ奇数正多角形〔（2n＋１）角形、ｎ＝１、２、
３……〕をなしていて、その（2n＋１）個の側
面の近傍ではつなぎ目のない少なくとも２層以上
〔2m層以上、ｍ≧１〕の偶数層の前記補強層がそ
の層内のコードの交角を等しく180゜／（2n＋
１）とするように配置され、また、（2n＋１）角
形をした上下の面では前記補強層が中心付近でｍ
（2n＋１）層、その外側でｍ（2n＋１−１）と中
心から離れるにつれて順次ｍ層ずつ減少している
ことを特徴とするものである。 For this reason, the structure of the rubber bag of the present invention consists of a tube rubber that keeps fluid airtight in a cavity formed inside, a reinforcing layer laminated thereon in which steel cords or fiber cords are aligned vertically, and this reinforcing layer. In the rubber bag, the entire rubber bag has a planar shape of an approximately odd regular polygon [(2n+1) polygon, n=1, 2,
3...], and in the vicinity of its (2n+1) side surfaces, at least two seamless layers (2m or more, m≧1) of even-numbered reinforcing layers are arranged so that the intersection angle of the cords in the layer is Equally 180°/(2n+
1), and on the upper and lower surfaces of the (2n+1) rectangle, the reinforcing layer has m near the center.
It is characterized by having (2n+1) layers, and m(2n+1-1) layers on the outside, decreasing successively by m layers as the distance from the center increases.

以下、図面に示された本発明の実施例に基いて
本発明を詳しく説明する。 Hereinafter, the present invention will be explained in detail based on embodiments of the present invention shown in the drawings.

第１図〜第３図において、Ｒはゴム袋で、これ
は全体が平面的にほぼ奇数正多角形〔（2n＋１）
角形、ｎ＝１、２、３……〕をなしている。第１
図においては、ｎ＝２の場合、すなわち正五角形
の場合を示す。このゴム袋Ｒは、チユーブ１とそ
の上に積層した補強層２とこの補強層２を被覆し
たカバーゴム３からなる。 In Figures 1 to 3, R is a rubber bag, which has an almost odd-numbered regular polygon ((2n+1)) as a whole in plan view.
It has a rectangular shape, n=1, 2, 3...]. 1st
The figure shows the case where n=2, that is, the case of a regular pentagon. This rubber bag R consists of a tube 1, a reinforcing layer 2 laminated thereon, and a cover rubber 3 covering the reinforcing layer 2.

チユーブゴム１は、一般に工業用に使用される
ゴムからなり、流体を封入出来るような中空のキ
ヤビテイを内部に形成している。このチユーブゴ
ム１の上には、スチールコードあるいは天然、合
成繊維で出来たすだれ織物等の縦方向にコードを
引きそろえた補強層２が後述する規則性をもつて
配置され、その上に、補強層２を使用目的に合つ
たゴム材質から成るカバーゴムで保護している。
また、チユーブゴム１の形成するキヤビテイと、
流体圧力源（図示せず）とを連結する接続バルブ
４や設けられ、これらが一体的に成形、加硫され
て、平面的にほぼ正五角形をしたゴム袋Ｒを形成
している。 The tube rubber 1 is made of rubber generally used for industrial purposes, and has a hollow cavity inside which can seal fluid. On top of this tube rubber 1, a reinforcing layer 2 in which cords are arranged in the vertical direction, such as steel cords or blind fabrics made of natural or synthetic fibers, is arranged with the regularity described later. 2 is protected by a cover rubber made of a rubber material suitable for the purpose of use.
In addition, the cavity formed by the tube rubber 1,
A connecting valve 4 for connecting to a fluid pressure source (not shown) is provided, and these are integrally molded and vulcanized to form a rubber bag R having a substantially regular pentagonal shape in plan view.

補強層２は、ゴム袋の（2n＋１）個の側面の
近傍で、第４図、第５図における実施例では○イで
示す箇所の側面の近傍で、つなぎ目のない少なく
とも２層以上〔2m層以上、ｍ≧１〕の偶数層で
配置されている。また、補強層２内の互に接する
補強コードは、いずれの側面においても等しくコ
ード角＝180゜／（2n＋１）であり、４図およ
び第５図では＝36゜となつている。 The reinforcing layer 2 is formed in the vicinity of the (2n+1) side surfaces of the rubber bag, and in the embodiments shown in FIGS. The above layers are arranged in an even number of layers with m≧1]. Furthermore, the reinforcing cords in the reinforcing layer 2 that are in contact with each other have a cord angle of 180°/(2n+1) equally on either side, and the angle is 36° in FIGS. 4 and 5.

また、補強層２は、（2n＋１）角形をした上下
面では（2n＋１）個の頂点を結ぶ線分で作られ
る多角形、第４図の実施例では、○ロ、○ハ、○ニ、が
それぞれ、周縁部から中央部に向け順次ｍ増づつ
多層化され、中央部がｍ（2n＋１）層になるよ
うに連続的に強化された構造となつており、第４
図の実施例でｍ＝１の場合、中央の○ニが５層、○ハ
が４層、○ロが３層となる。なお、補強層２は上下
面の中央部付近でつなぎ目があつてもよい。 In addition, the reinforcing layer 2 has a polygon formed by line segments connecting (2n+1) vertices on the upper and lower surfaces of a (2n+1) polygon, and in the embodiment shown in FIG. Each layer is multi-layered, increasing in m (m) layers from the periphery to the center, and is continuously reinforced so that the center has m(2n+1) layers.
In the example shown in the figure, when m=1, ○D in the center has 5 layers, ○C has 4 layers, and ○B has 3 layers. Note that the reinforcing layer 2 may have a seam near the center of the upper and lower surfaces.

上記のように構成されるゴム袋Ｒを自動車用ジ
ヤツキ等として使用する場合には、第６図に示さ
れるように、流体をキヤビテイ内に圧入するとゴ
ム袋Ｒが膨張してその高さがH0からＨに変化す
るので、被支持物体５を持ち揚げることができ
る。 When the rubber bag R configured as described above is used as a jack for an automobile, etc., as shown in FIG. Since it changes from 0 to H, the supported object 5 can be lifted.

次に、上記ゴム袋Ｒの製法を説明する。 Next, the manufacturing method of the rubber bag R will be explained.

(1) 所定の厚さの未加硫ゴムシートを一辺の長さ
Ｌの正（2n＋１）角形に裁断し、これを２枚
準備して、タルク等を打粉して公知の方法で中
空状のキヤビテイを有するチユーブを成型し、
望ましい位置に接続バルブを取付ける。(1) Cut an unvulcanized rubber sheet of a predetermined thickness into a regular (2n+1) square shape with side length L, prepare two sheets of this, and powder the sheets with talc or the like to form a hollow shape using a known method. Molding a tube with a cavity,
Install the connection valve in the desired location.

(2) 次に、あらかじめゴム引きされたすだれ織物
を巾 Ｗ＝Ｌ×sin（ｎ／２ｎ×１×180） に裁断し準備する。(2) Next, prepare the rubberized blind fabric by cutting it into a width W = L x sin (n/2n x 1 x 180).

第７図の実施例では、Ｌ＝300mmなので、Ｗ
≒285mmとなる。 In the embodiment shown in FIG. 7, since L=300mm, W
≒285mm.

(3) 次に上記(1)で成形したチユーブゴムと接続バ
ルブの一体化した未加硫物の一辺の近傍の平面
上から上記Ｗの巾のすだれ織物を初めの辺を含
めずにｎ番目の辺に向けて貼り合せる。第７図
の実施例では、１辺の長さＬ＝300mmの正五角
形（ｎ＝２）の場合、巾Ｗ≒285mmのすだれ織
物を辺１０の近傍の平面上から辺１０を含めず
にｎ＝２番目の辺１２に向けて貼り合せる。(3) Next, from a plane near one side of the unvulcanized product formed in (1) above, where the tubular rubber and the connecting valve are integrated, place a blind fabric with a width of W above, not including the first side. Paste it towards the edges. In the example shown in FIG. 7, in the case of a regular pentagon (n = 2) with a side length L = 300 mm, a blind fabric with a width W = 285 mm is = Attach toward the second side 12.

(4) 次に、ｎ番目の辺、実施例では辺１２の辺に
そつて前記すだれ織物を折り曲げ、側面を通つ
て更に裏面に折り曲げると、第７図の実施例の
点線で示すように幾何学的にコードの方向が決
定し、折り曲げた辺１２を含めず再びｎ＝２番
目の辺１４に自動的に向う。(4) Next, when the blind fabric is folded along the n-th side, which is side 12 in the embodiment, and further folded through the side surface and back, it forms a geometric shape as shown by the dotted line in the embodiment of FIG. The direction of the cord is determined logically, and it automatically moves toward n=2nd side 14 again, excluding the folded side 12.

(5) 以下、コードが多角形の辺に来た時折り曲げ
折り返すと、補強層は、連続して、全ての面を
補強して行くので、全ての側面（第４図の○イ部
分）が等しく2m層（ｍ≧１）になつた所で終
了する。(5) When the cord comes to the side of the polygon, bend it back and fold it back. The reinforcing layer will continuously reinforce all sides, so all the sides (○A part in Figure 4) It ends when the layer reaches 2 m (m≧1).

(6) 次に、所定の厚さのカバーゴムを上記補強層
の上に貼る。(6) Next, cover rubber of a predetermined thickness is pasted on the reinforcing layer.

(7) ついで、公知の手段を用いて加硫し完了す
る。(7) Then, vulcanization is completed using known means.

上記の製法によつてつくられる本発明のゴム袋
は、側面近傍に継ぎ目がなく強度上の欠かんのな
い構造体となつているので、従来技術の欠点であ
つた圧力下での側面又は周縁部の破壊が防止出来
ると共に側面が等しく一定のコード角になつてい
るので、タイヤや空気ばねのいわゆるバイアス構
造と同一となり、ゴム袋が伸縮する場合コード角
の変化により、平均的に無理なく上下動に追従出
来るので耐久性に優れており、又、上下面は自由
膨張時に応力の最も集中する中央部程多層に強化
されているので、耐圧力を向上させる効果があ
る。 The rubber bag of the present invention manufactured by the above-mentioned manufacturing method has a structure that has no seams near the side surfaces and is indispensable for strength, so that the side surfaces or peripheral edges under pressure, which were the drawbacks of the prior art, are seamless. Since the cord angle is equal and constant on both sides, it is the same as the so-called bias structure of tires and air springs, and when the rubber bag expands and contracts, it can be moved up and down without difficulty on average due to changes in the cord angle. It has excellent durability because it can follow the movement, and since the upper and lower surfaces are reinforced in multiple layers toward the center where stress is most concentrated during free expansion, it has the effect of improving pressure resistance.

また、上記の製法によれば、補強層を連続的に
しかも正確に成形出来、特別な周辺部の強化作業
が不要となるので、必然的にばらつきが少なく、
耐圧性、耐久性のすぐれたゴム袋を安価に製作す
ることが出来る。 In addition, according to the above manufacturing method, the reinforcing layer can be molded continuously and accurately, and there is no need for special reinforcement work on the peripheral areas, so there is naturally less variation.
A rubber bag with excellent pressure resistance and durability can be manufactured at low cost.

以上の構造、製法上の一般的特徴を列挙する
と、2n＋１ ｎ＝１、２、３……の奇数正多角
形において、側面の補強層を2m層（ｍ≧１）に
積層する場合、多角形の１辺の長さをＬとすれ
ば、 (1) 補強層の巾は Ｗ＝Ｌ×sin（ｎ／２ｎ×１×180）となる。 To enumerate the general characteristics of the above structure and manufacturing method, in the case of an odd regular polygon with 2n+1 n=1, 2, 3..., when laminating the side reinforcement layer in 2m layers (m≧1), the polygon If the length of one side of is L, then (1) the width of the reinforcing layer is W=L×sin(n/2n×1×180).

(2) ある辺の近傍から貼り始めた場合、補強層は
その辺を含めず、ｎ番目の辺に向ける。(2) When pasting starts near a certain side, the reinforcing layer does not include that side and is directed toward the nth side.

(3) 側面2m層積層した場合、上下面の中央部の
層数は、ｍ（2n＋１）層となり、多角形の頂
点を結ぶ線分で囲まれた多角形は、中央から周
辺に向うに従つてｍ層づつ順次減少するような
構造となる。(3) When 2m layers are stacked on the sides, the number of layers in the center of the top and bottom surfaces is m (2n + 1) layers, and the polygon surrounded by line segments connecting the vertices of the polygon is As a result, the structure is such that the number of layers decreases sequentially by m layers.

(4) 2m層に積層された側面のコード角は、 １８０゜／２ｎ×１となる。(4) The cord angle of the side layered in 2m layers is It becomes 180°/2n×1.

次に、前述した正五角形の実施例ｎ＝２、ｍ＝
１、Ｌ‐300mmのものをアラミド繊維1500d／３
33エンドのすだれ織物で試作したものの特性曲
線を第８図に示す。比較のために、同一材料で製
作した従来公知の特公昭55−22399号に基づく１
辺Ｌ＝400mmの正四角形の特性も記載した。各々
の平面積が前者が1550cm2、後者が1600cm2であるこ
とから、第８図に示すように両者の特性上の差囲
は認められなかつた。 Next, the above-mentioned regular pentagonal example n=2, m=
1. L-300mm aramid fiber 1500d/3
Figure 8 shows the characteristic curve of a prototype made from 33-end blind fabric. For comparison, 1 based on the conventionally known Japanese Patent Publication No. 55-22399 made of the same material.
The characteristics of a regular square with side L = 400 mm are also described. Since the planar area of each is 1550 cm 2 for the former and 1600 cm 2 for the latter, no difference in characteristics between the two was recognized as shown in FIG.

一方、これら構造体をいづれの面も拘束しない
自由な状態で破壊テストを実施した所、本実施例
は圧力55Kg／cm2で補強層が最も多層化された第４
図の○ニの部分が破壊したが、前記公知の四角形構
造体は、圧力20Kg／cm2で補強層を折返し重ね合せ
た部分（本実験に用いたものは60mmのオーバーラ
ツプを取つた）が抜けて破壊に至り、このものが
その重ね合せた強化部分になお弱点が存在してい
ることがわかつた。 On the other hand, when a destructive test was carried out on these structures in a free state without restraining any of the surfaces, it was found that the fourth example had the most multi-layered reinforcing layer at a pressure of 55 kg/ cm2 .
The part marked with ○D in the figure broke, but in the known quadrangular structure, the part where the reinforcing layer was folded and overlapped under a pressure of 20 kg/cm 2 (the part used in this experiment had an overlap of 60 mm) fell out. This led to its destruction, and it was discovered that this thing still had weaknesses in its reinforced parts.

以上説明したように本発明のゴム袋は、側面近
傍に強度上の欠かんのない構造体となつているの
で、圧力により側面部分で破壊することがなく、
また、側面が全て等しい角度のコードで補強出来
るので上下の伸縮に対しコードの角度変化により
無理なく追従出来るので耐久性にすぐれており、
さらに上下面は自由膨張時応力の最も集中する中
央部分が最も多く強化されているので、耐圧力を
向上させる効果がある。 As explained above, the rubber bag of the present invention has a structure near the side surface that is essential for strength, so the side surface portion does not break due to pressure.
In addition, since all sides can be reinforced with cords at the same angle, vertical expansion and contraction can be easily followed by changing the angle of the cord, making it highly durable.
Furthermore, since the upper and lower surfaces are reinforced the most at the central portion where stress is most concentrated during free expansion, this has the effect of improving pressure resistance.

また、奇数正多角形の形状をしているので補強
層を極めて容易に、しかも正確に連続して積層出
来るので、品質上のバラツキが少ない製品を安価
に提供することが出来る利点もある。 Furthermore, since it has an odd regular polygonal shape, reinforcing layers can be laminated very easily and accurately in succession, so there is an advantage that products with little variation in quality can be provided at low cost.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明に係わるゴム袋の一例の平面
図、第２図はその側面図、第３図は第１図のＡ−
Ａ線一部切欠断面説明図である。第４図、第５図
は、補強層の配置状況を示す説明図、第６図は本
発明に係わるゴム袋の一例の使用状況を示す説明
図である。第７図は本発明に係わるゴム袋の一例
の製造に際してチユーブゴムに補強層を積層させ
る方法を示す説明図、第８図は本発明に係わるゴ
ム袋の一例と従来のゴム袋とについて使用する場
合の荷重（トン）と揚程（cm）との関係をグラフ
で示した説明図である。 Ｒ……ゴム袋、１……チユーブゴム、２……補
強層、３……カバーゴム、４……接続バルブ、５
……被支持物体。 FIG. 1 is a plan view of an example of a rubber bag according to the present invention, FIG. 2 is a side view thereof, and FIG.
It is an explanatory view of a partially cutaway cross section along line A. FIGS. 4 and 5 are explanatory diagrams showing the arrangement of the reinforcing layer, and FIG. 6 is an explanatory diagram showing the usage of an example of the rubber bag according to the present invention. FIG. 7 is an explanatory diagram showing a method of laminating a reinforcing layer on tube rubber when manufacturing an example of a rubber bag according to the present invention, and FIG. 8 is an explanatory diagram showing a case in which an example of a rubber bag according to the present invention is used and a conventional rubber bag. It is an explanatory diagram showing the relationship between the load (tons) and the lifting height (cm) in a graph. R...Rubber bag, 1...Tube rubber, 2...Reinforcement layer, 3...Cover rubber, 4...Connection valve, 5
...Supported object.

Claims (1)

【特許請求の範囲】 １ 内部に形成したキヤビテイ内で流体を気密保
持するチユーブゴムと、それに積層した、スチー
ルコードあるいは繊維コードを縦方向に引きそろ
えた補強層と、この補強層を被覆したカバーゴム
とからなり、かつ、圧力源と連結するための接続
バルブを有するゴム袋において、ゴム袋全体が平
面的にほぼ奇数正多角形〔（2n＋１）角形、ｎ＝
１、２、３……〕をなしていて、その（2n＋
１）個の側面の近傍ではつなぎ目のない少なくと
も２層以上〔2m層以上、ｍ≧１〕の偶数層の前
記補強層がその層内のコードの交角を等しく180
゜／（2n＋１）とするように配置され、また、
（2n＋１）角形をした上下の面では前記補強層が
中心付近でｍ（2n＋１）層、その外側でｍ（2n
＋１−１）と中心から離れるにつれて順次ｍ層ず
つ減少していることを特徴とするゴム袋の構造。[Claims] 1. A tube rubber that keeps fluid airtight in a cavity formed inside, a reinforcing layer laminated thereon in which steel cords or fiber cords are aligned vertically, and a cover rubber covering this reinforcing layer. In a rubber bag having a connecting valve for connecting to a pressure source, the entire rubber bag has an approximately odd-numbered regular polygon in plan [(2n+1) polygon, n=
1, 2, 3...], and its (2n+
1) In the vicinity of each side, the reinforcing layer is made of at least two or more even-numbered layers (more than 2m layers, m≧1) without any joints, so that the intersection angles of the cords in the layer are equal to 180
It is arranged so that ゜/(2n+1), and
In the upper and lower (2n+1) rectangular surfaces, the reinforcing layer is m(2n+1) layers near the center, and m(2n+1) layers on the outside.
+1-1) The structure of a rubber bag is characterized in that the layers gradually decrease by m layers as the distance from the center increases.
JP57146780A 1982-08-26 1982-08-26 Structure of rubber bag Granted JPS5937347A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57146780A JPS5937347A (en) 1982-08-26 1982-08-26 Structure of rubber bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57146780A JPS5937347A (en) 1982-08-26 1982-08-26 Structure of rubber bag

Publications (2)

Publication Number Publication Date
JPS5937347A JPS5937347A (en) 1984-02-29
JPS6246737B2 true JPS6246737B2 (en) 1987-10-05

Family

ID=15415362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57146780A Granted JPS5937347A (en) 1982-08-26 1982-08-26 Structure of rubber bag

Country Status (1)

Country Link
JP (1) JPS5937347A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2144612A1 (en) * 1994-03-17 1995-09-18 Hl & H Timber Products (Pty) Ltd. High pressure bag

Also Published As

Publication number Publication date
JPS5937347A (en) 1984-02-29

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