JP6651179B1 - Upholstery dam body made of rubber cloth - Google Patents

Abstract

A rugged dam body made of rubber-coated cloth is provided, which has an improved effect of preventing swelling in the vicinity of a deflector portion and prevents cracks at the base of the deflector portion as compared with the related art. Kind Code: A1 Abstract: An up-and-down weir body made of a rubber-coated cloth, which separates an upper part and a lower part of a non-joining zone C of an inner rubber layer strip 11 to form a space therein, wherein the inner rubber layer strip has a non-joining zone. The first rubber layer strip 11-1; the silicon rubber layer strip 11-2 surrounding a predetermined range on one end side; and the first rubber layer strip surrounding the silicon rubber layer strip. A second rubber layer strip 11-3 sandwiching the entire area of the body, and when a space is formed inside, a first rubber layer strip is formed on one end side in the width direction of the inner rubber layer strip. A gap Ga1 is formed in a state where the silicon rubber layer band is sandwiched between the body and the second rubber layer band. The deflector portion f has a second gap portion Ga2 near the rubber-coated cloth laminate strip 12. [Selection diagram] Fig. 1

Description

  TECHNICAL FIELD The present invention relates to a rugged weir body made of a rubberized cloth having a deflector.

  Conventionally, rubber damping weirs have been used for damping rivers and waterways for the purpose of stopping water in small and medium-sized rivers and securing water levels in agricultural / industrial waterways, and in particular, rubber damping weirs having deflectors. Is effective in reducing the vibration of the main body of the upholstery dam made of rubber cloth at the time of standing and preventing the damper body of the upholstery made of rubber cloth at the time of falling down, and is adopted at many sites.

  By the way, it has been found that a rubber-draped weaving weir having a deflector, which has been used for a long period of time, has a problem that swelling or the like occurs near a portion having a deflector.

  As a conventional technique related to the problem of the bulging, Japanese Patent Application Laid-Open No. H11-163,873 discloses a technique for preventing stress concentration near a widthwise end of a non-bonding zone of a band, preventing generation of cracks, For the purpose of preventing fluid leakage from, and improving durability, a band having a non-joining zone in which the upper and lower portions can be separated at the center in the width direction, and a reinforcing layer surrounding the periphery of the band, In the band-shaped bag body that forms a flow path inside the band by separating the upper and lower portions of the non-bonded zone of the band, the inner side of the reinforcing layer and the width direction both ends of the non-bonded zone of the band. A configuration is disclosed in which a notch or space having a circular arc portion protruding outward in the width direction is provided in the vicinity.

Japanese Patent No. 3057642

However, the present inventors considered a mechanism such as swelling near a portion having a deflector, and with respect to countermeasures, refer to the technology described in Patent Document 1 and repeatedly considered and studied. It has been found that there is room for improvement to further increase the degree of prevention of stress concentration near the portion having the deflector as compared with the described technique.
In addition, the present inventors have further studied and examined that, in the case of an upholstery weft made of rubber-coated cloth having a deflector, depending on the installation environment, stress concentrates at the base of the deflector part, so that a crack is generated at the base of the deflector part. It has also been found that there is a risk of occurrence.
Patent Document 1 mentions that stress concentration near the end of the non-bonding zone of the band is prevented to prevent the occurrence of cracks, but attention is paid to the problem of cracks at the root of the deflector. Absent.

  The present invention has been made in view of the above-described problems, and has an effect of preventing swelling near the deflector portion as compared with the related art, and can prevent a crack at the base of the deflector portion from being made of a rubber-draped undulating weir. The purpose is to provide the body.

In order to achieve the above object, a rubber drawn cloth undulating weir body according to the present invention has a non-joining zone in which an upper part and a lower part can be separated from near one end to the other end in the width direction, and the upper end is provided at the one end. An inner rubber layer band having a joining zone between the inner rubber layer and the lower portion, a rubber-coated cloth laminated band surrounding the inner rubber layer-shaped band, and a deflector at one end in the width direction, surrounding the rubber-coated cloth laminated band. The outer rubber layer band is integrally bonded by vulcanization, and the other end in the width direction of the inner rubber layer band, the rubberized cloth laminated band, and the outer rubber layer band is fixed. A rubber drawn cloth undulating weir body that forms a space for filling a fluid such as air into the inside of the inner rubber layer strip by separating an upper part and a lower part of the non-joining zone of the inner rubber layer strip. ,Previous An inner rubber layer band, a first rubber layer band having the non-joining zone, a silicon rubber layer band surrounding a predetermined range on one end side in a width direction of the first rubber layer band; A second rubber layer band surrounding the silicon rubber layer band and sandwiching the entire area of the silicon rubber layer band together with the first rubber layer band; When a space to be filled with a fluid such as air is formed inside the body, the first rubber layer band and the second rubber layer band are provided at one end side in the width direction of the inner rubber layer band. Is separated from the silicon layer strip, and a first gap portion in a state where the silicon rubber layer strip is sandwiched between the first rubber layer strip and the second rubber layer strip is formed. It is characterized in that it is formed.
Also, in the rubber-draped cloth undulating weir body of the present invention, the outer rubber layer band is a second end near the rubber-pulled cloth laminated band at one end side in the width direction of the outer rubber layer band. It is preferable to have a void.

  ADVANTAGE OF THE INVENTION According to this invention, the effect of preventing the expansion near the deflector part is improved compared with the prior art, and the undulating weir main body made of rubber drawing cloth which can prevent the crack of the base of a deflector part is obtained.

It is an explanatory view showing a configuration of a main part of a rubber-pulled cloth undulating weir body according to the first embodiment of the present invention, (a) is a width direction cross-sectional view of the main part in a state where the rubber-pulled cloth undulating weir body is down, (b) is a partially enlarged view of the inner rubber weir layer strip in (a). FIG. 1 (a) is a cross-sectional view in a width direction of a main part in a state where a rubber drawn cloth undulating weir body according to the first embodiment is upright, and (b) is a partially enlarged view of an inner rubber weir layer strip in (a). It is. It is an explanatory view schematically showing an example of a basic form of a rubber-coated cloth undulating weir body, (a) is a perspective view showing a state where the rubber-coated cloth undulating weir body is upright, and (b) is a rubber drawing shown in (a). It is a side view which shows the state which the cloth undulation dam main body fell down. FIG. 4 is a widthwise cross-sectional view schematically showing a basic configuration of the rubber-drafted up / down weir main body of FIG. 3 in a folded state. It is explanatory drawing of the principal part which shows the generation | occurrence | production mechanism of the swelling of the deflector part which arises in the rubber-draped cloth undulating weir body, (a) is width direction sectional drawing which shows the state of the principal part in a 1st stage, (b) FIG. 9 is a cross-sectional view in the width direction showing the state of the main part in the second stage, and FIG. 10C is a cross-sectional view in the width direction showing the state of the main part in the third stage. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing a technique described in Patent Document 1, in which (a) is a cross-sectional view in the width direction showing a band-shaped bag according to the invention of Patent Document 1, and (b) is a flow path inside the band-shaped bag of (a). FIG. 4 is a cross-sectional view in the width direction showing a state in which is formed. 6A and 6B are explanatory views showing the technique described in Patent Document 1, wherein FIG. 6A is a cross-sectional view in the width direction showing a conventional band-shaped bag before deriving the invention described in FIG. 6, and FIG. 6B is a band-shaped bag shown in FIG. It is a width direction sectional view showing the state where a flow path was formed inside a body. It is explanatory drawing which shows the principal part structure of the countermeasure which the present inventors initially considered and examined about the problem of the swelling of the deflector part in the rubber-draped weir body. FIG. 3B is a cross-sectional view in the width direction showing the undulating weir body lying down, and FIG. 2B is a widthwise cross-sectional view showing the main configuration of FIG. It is explanatory drawing of the principal part which shows the generation | occurrence | production mechanism of the crack of the base of the deflector part which arises in the rubber-draped cloth undulation main body, (a) is width direction sectional drawing which shows the deflector part in the upright state in the 1st stage, (b) FIG. 7 is a cross-sectional view in a width direction showing the deflector portion in the laid-down state in the first stage, and FIG.

  Prior to the description of the embodiment, the process of deriving the present invention and the operation and effect of the present invention will be described.

(1) Basic Form of the Upholstery Weir Body Made of Rubberized Fabric The upholstery weir body made of rubberized fabric is provided with a deflector f at the end of the folded portion, for example, as shown in FIG. Then, when it falls down, it falls down into a flat shape as shown in FIG. 3 (b).
More specifically, as shown in FIG. 4, the rubber-draped weaving weir main body 1 ′ has an inner rubber layer strip 11 ′, a rubber-pulled laminated strip 12, and an outer rubber layer strip 13 ′. . In FIG. 4, reference numeral 14 denotes a rubberized cloth layer for reinforcement. The inner rubber layer strip 11 ′, the rubber-coated cloth laminated strip 12, and the outer rubber layer-shaped strip 13 ′ (and the reinforcing rubber-coated cloth layer 14) are integrally joined by vulcanization.
The inner rubber layer strip 11 ′ has a non-bonding zone C in which an upper rubber layer 11 ′ a and a lower rubber layer 11 ′ b can be separated from each other, and the upper rubber layer 11 ′ is located on one end A side in the width direction. 11'a) and the lower part (the rubber layer 11'b) have a bonding zone D.
The rubber-coated cloth laminated strip 12 is made of a plurality of rubber-coated cloths and is arranged so as to surround the surface of the inner rubber layer strip 11 ′ on the one end A side in the width direction.
The outer rubber layer band 13 'surrounds the surface of the rubber-coated cloth laminated band 12 on one end A side in the width direction, and has a deflector f at one end A.
Then, the rubber-draped cloth undulating weir main body 1 ′ is fixed to the other end B in the width direction of the inner rubber layer strip 11 ′, the rubber-pulled laminated strip 12, and the outer rubber layer strip 13 ′. The upper portion (the rubber layer 11'a) and the lower portion (the rubber layer 11'b) of the non-joining zone C of the rubber layer strip 11 'are separated from each other, and a fluid such as air is introduced into the inside rubber layer strip 11'. A space to be filled is formed.

(2) Problem 1 of the rugged dam body made of rubber cloth (bulging of the deflector)
As described above, it has been found that a rubber drawn cloth undulation having a deflector, which has been used for a long time after use, has a problem that swelling or the like occurs near a portion having the deflector.

(2-1) Consideration of the mechanism of swelling of the deflector portion The present inventors have considered the mechanism of swelling of the deflector portion as follows.
The swelling of the deflector portion causes a decrease in adhesive strength due to the penetration of moisture, a tensile fatigue, and a bending due to a wrinkle caused by a normal wrinkle or wrinkling during falling / control of the water level. It is considered that the separation occurs due to the separation (see FIG. 5A) and the separation portion growing.
However, it is considered that the larger factor than the above is due to the exposure of the rubberized cloth layer due to the crack of the inner rubber layer. Due to the cracks in the inner rubber layer, a fluid such as air filled in the inner space of the main body of the rubberized cloth is transmitted to the outer rubber layer through the rubberized cloth layer exposed by the rubber cracks (see FIG. 5 (b)). It is considered that the outer rubber layer and the outer rubber layer, which have been used for a long time and have reduced adhesive strength due to the penetration of moisture, are peeled off (see FIG. 5 (c)).
Further, it is considered that the factor of the crack of the inner rubber layer is the stress concentration in the vicinity of the widthwise end of the non-joining zone of the inner rubber layer strip.

(2-2) Conventional technology relating to the problem of bulging of the deflector portion As a conventional technology relating to the problem of bulging , Patent Document 1 discloses a technique in the vicinity of a widthwise end of a non-bonding zone of a band. There is disclosed a band-shaped bag for preventing concentration, preventing generation of cracks, preventing leakage of fluid from a flow path, and improving durability.

For example, as shown in FIGS. 6A and 6B, the belt-shaped bag body described in Patent Document 1 has a non-sheet body in which the upper sheet part 52a and the lower sheet part 52b can be separated from each other at the center in the width direction. A belt (belt-shaped rubber sheet) 52 having a bonded zone 53 and a reinforcing layer (layered air-conditioning canvas) 55 surrounding the belt 52 are provided, and upper and lower portions of the non-bonded zone 53 of the belt 52 are provided. Are separated from each other to form a flow path 58 inside the band-shaped body 52, in the vicinity of both ends 53a in the width direction of the non-bonded zone 53 of the band-shaped body 52 inside the reinforcing layer 55 (the end 53a A notch 59 having a circular arc portion 59a that is convex outward in the width direction is provided between the curved portion 55b of the reinforcing layer 55). 6, reference numeral 55a denotes a flat portion of the air chamber reinforcing canvas 55, reference numeral 56 denotes an outer cover for covering the air chamber reinforcing canvas 55 outside the air chamber reinforcing canvas 55, and reference numeral 57 denotes an upper and lower portion of the outer jacket 56 arranged in parallel. This is a jacket reinforced canvas for reinforcing the air chamber reinforcement canvas 55.
Patent Document 1 discloses that, as shown in FIG. 6, arc-shaped portions convex outward in the width direction are provided inside the reinforcing layer 55 and near both ends in the width direction of the non-bonding zone 53 of the strip 52. 7 (a) and 7 (b), the widthwise end 53a of the non-bonding zone 53 of the band-like body 52 has an acute angle. It is described that stress concentration between the notch 59 and the reinforcing layer 55 is greatly suppressed without being pulled up and down, and the generation of a crack 60 is prevented.

(2-3) Countermeasures that the inventors of the present invention have originally considered with respect to the problem of swelling of the deflector portion. With reference to the technology, the structure of providing a double air chamber structure in the body of the rugged weir made of rubber-coated cloth was studied.

(2-3-1) Means for Eliminating Swelling of the Deflector Portion The structure in which the double air chamber structure is provided in the rubber-coated cloth undulating weir body is, as shown in FIG. The notch E having a convex circular arc portion is provided between the end of the non-joining zone C on the one end A side of the inner rubber layer strip 11 '' and the rubber-coated cloth laminate strip 12. Then, the upper part (the rubber layer 11 ″ a) and the lower part (the rubber layer 11 ″ b) of the non-joining zone C of the inner rubber layer strip 11 ″ are separated from each other so that the inner rubber layer strip 11 ″ is separated. When a space for filling a fluid such as air is formed therein, as shown in FIG. 8 (b), an air chamber is formed in a portion of the notch E, thereby providing a space for filling a fluid such as air. The air chamber at the notch E has a double air chamber structure.
As shown in FIG. 8, if the air chamber has a double air chamber structure, the inner rubber layer D has a rounded shape due to the formation of the air chamber at the notch E, and the stress is reduced. This can prevent the inner rubber layer from cracking, make it harder for the rubberized fabric layer to be exposed, and can suppress the action of pushing up the outer rubber layer.
However, when the inner rubber layer that forms the boundary between the space filled with the fluid such as air and the air chamber at the notch E is broken due to aging, the stress is reduced by the notch E, and the rubber cloth is thinned. It concentrates on the inner rubber layer located on the layer side.
In this regard, the present inventor has further studied and found that there is room for improvement in the configuration of FIG. 8 in order to reduce the stress applied to the inner rubber layer located on the side of the rubberized cloth layer and make the inner rubber layer more difficult to crack. It turned out to be.

(3) Problem 2 of the main body of the upholstery dam made of rubber-coated cloth (crack at the base of the deflector)
Further, as described above, the present inventors have further studied and studied that, in a rubber-coated cloth undulating weir having a deflector, depending on the installation environment, the concentration of stress at the base of the deflector portion causes the deflector to be deflected. It has also been found that there is a risk of cracking at the base of the part.

(3-1) Consideration of the mechanism of the crack at the base of the deflector The inventors considered the mechanism of the crack at the base of the deflector as follows.
In a cold region or a rolled weir made of rubber cloth used for measures against boulders, the outer rubber has a large thickness. However, increasing the thickness of the outer rubber increases the rigidity against bending, so that the stress concentrated at the base of the deflector tends to increase (see FIG. 9A).
In addition, when the standing period of the weir body becomes longer, plastic flow occurs at the base of the deflector part, and the rubber lays down, causing a tensile force to be generated at the base of the deflector part and irreversible rubber is left. Cracks occur between the outer rubber forming the outer portion and the deflector at the base of the rubber and the rubberized fabric layer (see FIG. 9B).
Further, in a cold region, the hardness of the rubber is increased and the rubber is deteriorated, and the physical properties of the rubber such as elongation (Eb) and tensile strength (Tb) are greatly reduced.

  Then, the present inventors, in view of these problems, repeated further examination and examination, and as a result, came to derive the rubber-coated cloth undulating weir body of the present invention.

(4) Configuration of the Upholstery Weir Body Made of Rubber-Drawn Fabric of the Present Invention The upholstery weir body made of rubber-coated fabric of the present invention has a non-joining zone in which the upper part and the lower part can be separated from near one end to the other end in the width direction. And an inner rubber layer strip having a joining zone where the upper and lower portions are joined to one end, a rubberized cloth laminated strip surrounding the inner rubber layer strip, and a rubberized cloth laminated strip surrounded by the widthwise direction. An outer rubber layer strip having a deflector at one end is integrally joined by vulcanization, and the other end in the width direction of the inner rubber layer strip, the rubber-coated cloth laminate strip, and the outer rubber layer strip is fixed. In the state, the upper and lower portions of the non-joining zone of the inner rubber layer strip is separated from the inner rubber layer strip to form a space for filling the inside of the inner rubber layer strip with a fluid such as air. The inner rubber layer band is the non-bonded zone A first rubber layer band having a first rubber layer band, a silicon rubber layer band surrounding a predetermined range on one end side in the width direction of the first rubber layer band, and a first rubber layer band surrounding the silicon rubber layer band. And a second rubber layer band sandwiching the entire range of the silicon rubber layer band together with the body, when a space for filling a fluid such as air into the inside of the inner rubber layer band is formed. On one end side of the inner rubber layer band in the width direction, the first rubber layer band and the second rubber layer band are separated from the silicon rubber layer band to form the first rubber layer band. It is configured such that a first void portion is formed in a state where the silicon rubber layer band is sandwiched between the second rubber layer band.

(5) Effect of the characteristic configuration of the present invention
(5-1) The first rubber layer strip and the second rubber layer strip are separated from the silicon layer strip on the rubber drawn cloth undulating weir body, and the first rubber layer strip and the second rubber are separated. Effect of the configuration in which a double air chamber structure is provided in which the first gap portion in which the silicon rubber layer strip is sandwiched between the layer strips and a portion filled with a fluid such as air is provided. If the inner rubber layer strip has a three-layer structure in which a silicon rubber layer strip is sandwiched between a first rubber layer strip and a second rubber layer strip, as in the case of a cloth undulating weir body. On one end side in the width direction of the inner rubber layer strip, the first rubber layer strip and the second rubber layer strip are separated from the silicon rubber layer strip to form a first rubber layer strip. A first void portion is formed between the second rubber layer band and the silicon rubber layer band, and is filled with a fluid such as air. At the site of a space, a double air chamber structure.
Silicon rubber has such a characteristic that it has extremely weak adhesiveness to general rubber generally used in a rubber-draped weir.
Then, when a layer is formed of silicon rubber and general rubber, if a force acts in a direction in which the layer is separated, the silicon rubber and general rubber are easily separated.
When silicon is used together with general rubber as a constituent material of the rubber layer in the undulating weir made of rubber-coated cloth, lamination is hindered.
For this reason, in the conventional rubber-draped weaving weir, the rubber layer such as the inner rubber layer strip 11 '' described above is formed using only general rubber, and the notch described above is formed in the rubber layer. In the case of providing a void portion such as E, it is common to use a technique in which a very thin release sheet is sandwiched between general rubbers to form a rubber layer, and the release sheet is separated from the rubber surface after molding. A configuration in which a layer is formed of silicon rubber and general rubber was not conceived.
The present inventors have paid attention to the characteristics of this silicone rubber, and have a configuration in which silicon rubber that inhibits lamination as a constituent material of a rubber layer in a conventional rubberized cloth undulating dam is sandwiched between generally used rubbers. Partially provided, the first rubber layer and the second rubber layer are separated from the silicone rubber, and the silicon rubber layer is sandwiched between the first rubber layer and the second rubber layer. Came to the idea of easily forming the voids.
As in the case of the rubber damping weir body of the present invention, the inner rubber layer band is a three-layer structure in which a thick silicon rubber layer band is sandwiched between a first rubber layer band and a second rubber layer band. According to the structure having the structure, the surface near the one end of the second rubber layer band outside the silicon rubber layer band can be easily formed to have a larger rounded shape toward the outside.
As a result, the stress concentration in the vicinity of the widthwise end of the non-joining zone of the inner rubber layer strip and the stress concentration in the inner rubber layer strip and the rubber-coated cloth laminated strip are remarkably reduced.

(5-2) The three-layer structure in which the silicon rubber layer band is sandwiched between the first rubber layer band and the second rubber layer band . Even if the first rubber layer forming the boundary with the first gap is broken due to aging, the silicon rubber layer is present inside the second rubber layer, so that the rubber cloth layer can be prevented from being exposed.

(5-3) Effect of the configuration having the second void portion on the side of the rubber-coated cloth layer In the rubber-draped cloth undulating weir body of the present invention, preferably, the outer rubber layer strip is formed of the outer rubber layer. A second gap is provided near one end of the band in the width direction and in the vicinity of the rubberized cloth laminated band.
According to this configuration, the portion forming the deflector located at one end of the non-joining zone in the rubber-draped cloth undulating weir body of the outer rubber layer-shaped belt is separated from the rubber-draped cloth-laminated belt, and the rubber-draped cloth-laminated belt is separated. Has a large radius of curvature, so that it is possible to transmit the circumferential tension of the rubber-draped cloth up / down weir more ideally, and the force that separates the deflector forming part from the rubber-pulled cloth lamination strip is increased. As a result, the separation of the rubber layer and the canvas layer can be prevented. In addition, the gap generated by the notch absorbs the compressive stress due to the bending acting on the base, and the crack at the base of the deflector due to the plastic flow can be reduced.

  For this reason, according to the present invention, a rubber-draped cloth up / down weir body capable of preventing swelling near the deflector portion and preventing cracking at the base of the deflector portion can be obtained as compared with the prior art.

(6) First Embodiment FIG. 1 is an explanatory view showing a configuration of a main part of a rubber-coated cloth undulating weir body according to a first embodiment of the present invention. FIG. (B) is a partially enlarged view of the inner rubber weir layer strip in (a). FIG. 2 is a cross-sectional view in a width direction of a main part in a state in which a rubber-pulled cloth up / down weir body according to the first embodiment of FIG. 1A is upright, and FIG. It is a partial enlarged view. Portions having the same configuration as the rubber-draped cloth up / down weir main body shown in FIG. 4 (rubber-draped laminated belt-like body 12, reinforcing rubber-draped cloth layer 14) are denoted by the same reference numerals, and description thereof will be omitted. .

(6-1) Characteristic Configuration of Rubber-Drawn Up-and-Down Weir Body of First Embodiment The rubber-pulled up-and-down weir body 1 of the present embodiment is, as shown in FIGS. 1 (a) and 1 (b), The inner rubber layer strip 11 includes a first rubber layer strip 11-1 having a non-bonding zone C, and silicon surrounding a predetermined range on one end A side in the width direction of the first rubber layer strip 11-1. A second layer which surrounds the rubber layer band 11-2 and the silicon rubber layer band 11-2 and surrounds the entire range of the silicon rubber layer band 11-2 together with the first rubber layer band 11-1. Rubber layer strip 11-3.
Silicon rubber has the characteristic that the adhesiveness with general rubber that is commonly used in rubber-draped weaves is extremely weak.
For this reason, when a layer is formed of silicon rubber and general rubber, if a force acts in a direction in which the layer is separated, the silicon rubber and general rubber are likely to be separated.
Due to such characteristics of silicon rubber, the rubber-draped weave body 1 of the present embodiment, when a space for filling a fluid such as air inside the inner rubber layer strip 11 is formed as shown in FIG. As shown in FIG. 2B, the first rubber layer strip 11-1 and the second rubber layer strip 11-3 are formed on one end A side in the width direction of the inner rubber layer strip 11. A state in which the silicon rubber layer strip 11-2 is interposed between the first rubber layer strip 11-1 and the second rubber layer strip 11-3 while being separated from the silicon rubber layer strip 11-2. The first gap Ga1 is formed.

  Further, the outer rubber layer band 13 has a second gap portion Ga2 near the rubberized cloth laminated band 12 on one end A side in the width direction of the outer rubber layer band 13.

(6-2) Effect of Characteristic Configuration of Rubber-Drawn Upholstery Weir Body of the First Embodiment According to the rubber-pulled upholstery weir body 1 of the present embodiment, the inner rubber layer strip 11 is made of thick silicon. Since the rubber layer strip 11-2 has a three-layer structure sandwiched between the first rubber layer strip 11-1 and the second rubber layer strip 11-3, the inner rubber layer strip 11 is formed. The first rubber layer strip 11-1 and the second rubber layer strip 11-3 are separated from the silicon rubber layer strip 11-2 on one end A side in the width direction of the first rubber layer, and the first rubber layer strip 11-1 and the second rubber layer strip 11-2 are separated from each other. A first gap Ga1 is formed between the layer strip 11-1 and the second rubber strip 11-3 with the silicon rubber strip 11-2 interposed therebetween, and is filled with a fluid such as air. A double-chamber structure is formed by the space to be made.
The rubber-coated cloth undulating weir body 1 of the present embodiment is free from wrinkles caused by the release sheet by the thick silicone rubber layer strip 11-2, and is a large rounded rubber that is formed stably and smoothly. The provision of the double air chamber structure having the drawing laminated belt-like body 12 greatly reduces stress concentration in the vicinity of the widthwise end of the non-joining zone C of the inner rubber layer belt-like body 11.

  Also, even if the first rubber layer forming the boundary between the space to be filled with the fluid such as air and the first gap Ga1 breaks due to aging, the silicon rubber layer is located inside the second rubber layer. , It is possible to prevent the rubberized cloth layer from being exposed.

  Further, according to the rubber-draped cloth undulating weir body 1 of the present embodiment, the outer rubber layer band 13 is located near the one end A side in the width direction of the outer rubber layer band 13 and in the vicinity of the rubber-pulled laminated band 12. And the second gap portion Ga2, the rubber-coated cloth laminated strip 12 has a larger rounded shape, so that the circumferential tension of the rubber-coated cloth undulating weir body 1 is more ideally transmitted. The deflector f is formed by relieving the compressive force caused by bending of the outer rubber layer strip 13 to the portion forming the deflector f located at one end A of the non-joining zone C in the rubber-draped cloth up-and-down weir body 1. The crack at the base due to the plastic flow in the part where it occurs can be alleviated.

  For this reason, according to the present embodiment, it is possible to obtain a rubber-draped cloth up-and-down weir main body that can enhance the effect of preventing swelling near the deflector portion and prevent cracks at the base of the deflector portion, as compared with the related art.

  As described above, the rubber-coated cloth undulating weir body of the present embodiment has been described with reference to FIGS. 1 to 5. However, the rubber-coated cloth undulating weir body of the present invention is not limited to those having the configurations shown in these drawings. Absent. For example, even when the outer rubber layer strip 13 has a configuration in which the second gap Ga2 is not provided in the vicinity of the rubber-coated cloth strip 12 on one end A side in the width direction of the outer rubber layer strip 13. Good.

  INDUSTRIAL APPLICABILITY The rugged weir body made of rubberized cloth of the present invention is useful in a field where it is required to manufacture a rugged weir made of rubberized cloth having a deflector.

DESCRIPTION OF REFERENCE NUMERALS 1 Upholstery weir body made of rubber cloth 11 Inner rubber layer strip 11a Upper rubber layer 11b Lower rubber layer 11-1 First rubber layer strip 11-2 Silicon rubber layer strip 11-3 Second rubber layer strip Body 12 Rubberized laminated fabric strip 13 Outer rubber layer strip 14 Rubberized fabric layer for reinforcement f Deflector C Non-bonded zone Ga1 First void Ga2 Second void 1 ′, 1 ″ Undulation made of rubber-coated cloth Weir main body 11 ', 11''Inner rubber layer strip 11'a, 11''a Upper rubber layer 11'b, 11''b Lower rubber layer 13' Outer rubber layer strip E Notch 51, 61 Belt bag 52 Belt (belt rubber sheet)
52a Upper seat portion 52b Lower seat portion 53 Non-joining zone 53a Width end portion 55 Reinforcing layer (air chamber reinforcing canvas)
55a Flat portion 55b Curved portion 56 Jacket 57 Jacket reinforced canvas 58 Channel 59 Notch 59a Convex arc portion

Claims (2)

An inner rubber layer strip having a non-bonding zone in which an upper portion and a lower portion are separable from the vicinity of one end to the other end in the width direction, and having an upper and lower joining band at the one end; The rubber-coated cloth laminated band surrounding the layer-shaped band, and the outer rubber layer band surrounding the rubber-coated cloth laminated band and having a deflector at one end in the width direction, are integrally joined by vulcanization, With the other end in the width direction of the inner rubber layer band, the rubber-laminated cloth band, and the outer rubber layer band fixed, the upper and lower portions of the non-bonded zone of the inner rubber layer band are isolated. A rugged weir body made of rubber cloth, which forms a space for filling a fluid such as air into the inside of the inner rubber layer strip by causing
The inner rubber layer strip, a first rubber layer strip having the non-bonding zone, and a silicon rubber layer strip surrounding a predetermined range on one end side in the width direction of the first rubber layer strip, A second rubber layer band surrounding the silicon rubber layer band and sandwiching the entire area of the silicon rubber layer band together with the first rubber layer band;
When a space for filling a fluid such as air is formed in the inside of the inner rubber layer band, the first rubber layer band and the second rubber are disposed at one end side in the width direction of the inner rubber layer band. Is separated from the silicon rubber layer band, and the silicon rubber layer band is sandwiched between the first rubber layer band and the second rubber layer band. A rugged weir body made of rubber-coated cloth, wherein a first void portion is formed.   The said outer rubber layer strip has a 2nd space | gap near the one end side in the width direction of the said outer rubber layer strip near the rubber-coated cloth lamination. 2. The undulating weir body made of a rubber-coated cloth according to 1.

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