JPH03194282A - Hose with bellows - Google Patents
Hose with bellowsInfo
- Publication number
- JPH03194282A JPH03194282A JP33321789A JP33321789A JPH03194282A JP H03194282 A JPH03194282 A JP H03194282A JP 33321789 A JP33321789 A JP 33321789A JP 33321789 A JP33321789 A JP 33321789A JP H03194282 A JPH03194282 A JP H03194282A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- hose
- wave
- wall thickness
- thickness
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 abstract description 15
- -1 polyethylene chloride Polymers 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 5
- 239000004709 Chlorinated polyethylene Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920005558 epichlorohydrin rubber Polymers 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は蛇腹付きホースに関する。この蛇腹イ］きホー
スは例えば自動車用エアインテークホース、ラジェータ
ホース、フィラホース等に利用できる。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a bellows hose. This bellows hose can be used, for example, as an air intake hose, radiator hose, filler hose, etc. for automobiles.
［従来の技術］
従来より産業界では、柔軟性、振動吸収性、取付【プ作
業性に優れたホースとして、蛇腹付きボスが広く用いら
れている。この蛇腹付きホースの蛇腹部は、ホース内周
面の口径およびホース外周面の口径か同期して軸方向に
連続波状に変化する。[Prior Art] In the industry, bellows bosses have been widely used as hoses with excellent flexibility, vibration absorption, and ease of installation. In the bellows portion of the bellows-equipped hose, the diameter of the inner circumferential surface of the hose and the diameter of the outer circumferential surface of the hose change synchronously in a continuous wave-like manner in the axial direction.
この蛇腹付きホースでは、蛇腹部のホース内周面の法線
方向のホース内周面とホース外周面との間隔を肉厚寸法
としたとき、蛇腹部の各部の肉厚寸法はほぼ同じである
。In this bellows-equipped hose, when the distance between the inner peripheral surface of the hose and the outer peripheral surface of the hose in the normal direction of the inner peripheral surface of the hose of the bellows section is defined as the wall thickness dimension, the wall thickness of each part of the bellows section is approximately the same. .
ところで上記した蛇腹付きホースを吸気系装置等に使用
すると、ホース内が負圧になるに伴い、大気圧の影響で
蛇腹部か変形して偏平化することがある。そこで、蛇腹
部の耐負圧性を一層向上させるために、蛇腹郡全体の肉
厚を厚くしたホース、材料を大きな剛性をもつものに変
更したホース等が開発されている。By the way, when the above-mentioned bellows-equipped hose is used in an intake system or the like, as the pressure inside the hose becomes negative, the bellows section may deform and become flat due to the influence of atmospheric pressure. Therefore, in order to further improve the negative pressure resistance of the bellows part, hoses have been developed in which the wall of the bellows part as a whole is increased in thickness, and hoses in which the material is changed to a material with greater rigidity.
［発明が解決しようとする課題］
ところが、蛇腹郡全体の肉厚を厚くしたホースでは蛇腹
部を形成する材料体積が増加して材料費が高くなったり
、蛇腹部の柔軟性が低下したりする問題がある。また、
材料を大きな剛性をもつものに変更したホースでは、他
の特性との関係で改良には限界がある。[Problems to be Solved by the Invention] However, in a hose in which the wall thickness of the entire bellows section is increased, the volume of material forming the bellows section increases, resulting in higher material costs and a decrease in the flexibility of the bellows section. There's a problem. Also,
For hoses made of materials with greater rigidity, there are limits to how much they can be improved due to other characteristics.
本発明は上記した実情に鑑み開発されたものＣ゛あり、
その技術的課題は、蛇腹部全体の肉厚を厚くしたり材料
を大ぎな剛性をもつものに変更したりする手段を採用す
ることなく、蛇腹部の耐負圧性を向上させ得る蛇腹付ぎ
ホースを提供することにある。The present invention was developed in view of the above-mentioned circumstances.
The technical challenge was to develop a hose with a bellows that could improve the negative pressure resistance of the bellows without increasing the wall thickness of the whole bellows or changing the material to one with greater rigidity. It is about providing.
［課題を解決するだめの手段］
本発明者は蛇腹部の耐負圧性向上について鋭意研究を重
ねた結果、蛇腹部のホース内周面の［］径か小となる波
底部の肉厚寸法を蛇腹部の他の部分の肉厚寸法よりも大
ぎく設定すれば、蛇腹部の材料体積が同じであっても、
蛇腹部の耐負圧性を向上させ得、蛇腹付きホース内か負
圧となったとぎてｂ蛇腹部が偏平しにくくなることを知
見し、この知見に基づき本発明を完成させたものである
。[Means for Solving the Problem] As a result of extensive research into improving the negative pressure resistance of the bellows part, the inventor of the present invention has determined that the wall thickness of the bottom of the corrugation where the [ ] diameter of the hose inner peripheral surface of the bellows part is smaller than that of the bellows part Even if the material volume of the bellows part is the same, if the wall thickness is set larger than the other parts of the bellows part,
It was discovered that the negative pressure resistance of the bellows part could be improved, and that the bellows part B was less likely to become flattened once the inside of the hose with the bellows became negative pressure, and based on this finding, the present invention was completed.
即ち、本発明の蛇腹付きホースは、少なくとも一部にホ
ース内周面の口径およびホース外周面の口径が同期して
軸方向に連続波状に変化覆る蛇腹部をもつ蛇腹付きホー
スであって、
ホース内周面の法線方向のホース内周面とボス外周面と
の間隔を肉厚寸法としたとき、蛇腹部のホース内周面の
口径が小となる波底部の肉厚寸法か蛇腹部の他の肉厚寸
法よりも大きく設定されていることを特徴とするもので
ある。That is, the bellows-equipped hose of the present invention is a bellows-equipped hose having a bellows portion in which the diameter of the inner circumferential surface of the hose and the diameter of the outer circumferential surface of the hose synchronously change in a continuous wave-like manner in the axial direction, and the hose includes: When the distance between the inner circumferential surface of the hose and the outer circumferential surface of the boss in the normal direction of the inner circumferential surface is taken as the wall thickness dimension, the wall thickness dimension of the corrugated bottom where the diameter of the hose inner circumferential surface of the bellows section is small or the wall thickness of the bellows section. It is characterized by being set larger than other wall thickness dimensions.
蛇腹部の波底部の肉厚寸法は、蛇腹部に要求される柔軟
性、ホース口径が大となる波山部の肉厚寸法、ホース口
径、ホース材質等を考慮して必要に応じて適宜選択され
るが、例えば、肉厚の比率で示すと、蛇腹部の波山部と
波底部との境界部分の立壁部の肉厚を１としたとき、蛇
腹部の波底部の肉厚は１．０１〜３、特に１．１〜１．
５に設定できる。The wall thickness of the corrugated bottom portion of the bellows portion is selected as necessary, taking into consideration the flexibility required for the bellows portion, the wall thickness of the wave crest portion where the hose diameter is large, the hose diameter, the hose material, etc. However, for example, in terms of wall thickness ratio, if the wall thickness of the vertical wall at the boundary between the wave crest and wave bottom of the bellows section is 1, then the wall thickness of the wave bottom of the bellows section is 1.01 to 1. 3, especially 1.1-1.
Can be set to 5.
蛇腹部の波底部、蛇腹部の波山部のピッチは適宜選択で
き、また、各ピッチは軸方向に均等でも、軸方向に不均
等でもよい。不均等ピッチの場合には、例えば、蛇腹部
の軸方向の中央域程、ピッチを小さくてきる。なお、波
底部、波山部のホース口径は必要に応じて適宜選択でき
る。The pitch of the wave bottom part of the bellows part and the wave crest part of the bellows part can be selected as appropriate, and each pitch may be equal in the axial direction or uneven in the axial direction. In the case of uneven pitch, for example, the pitch is made smaller in the axially central region of the bellows portion. Note that the diameter of the hose at the bottom and crest of the wave can be appropriately selected as required.
蛇腹付きホースを形成する（Ａ料としては天然ゴム、合
成ゴム、樹脂等を適宜選択して採用でき、例えば、塩素
化ポリエチレン、エチレンプロピレンゴム、シリコンゴ
ム、エピクロルヒドリンゴム、アクリルゴム、ポリプロ
ピレン、エチルア廿チー１〜・エチレン共重合体、ポリ
アミド、ポリエステル、ポリブヂレンテレフタレート等
を採用できる。Forming a bellows hose (A material can be selected from natural rubber, synthetic rubber, resin, etc. as appropriate; for example, chlorinated polyethylene, ethylene propylene rubber, silicone rubber, epichlorohydrin rubber, acrylic rubber, polypropylene, ethyl alcohol, etc.) Q1~ Ethylene copolymer, polyamide, polyester, polybutylene terephthalate, etc. can be used.
本発明の蛇腹付きホースは、蛇腹付きホースで従来使用
されている公知の方法で製造できる。例えば、蛇腹部の
内周面を形成覆る波型面部をもつ中子と、蛇腹部の外周
面を形成する波型面部をもつ型とを用いた型成形で製造
できる。ここで、中子と型とで区画されるキャビティの
うち、蛇腹部の波底部を形成するキャビティ部分の厚み
が、蛇腹部の他の部分を形成するキャビティ部分の厚み
よりも大ぎくなるように設定されている。The bellows-equipped hose of the present invention can be manufactured by a known method conventionally used for bellows-equipped hoses. For example, it can be manufactured by molding using a core having a wavy surface portion that forms and covers the inner circumferential surface of the bellows portion, and a mold having a wavy surface portion that forms the outer circumferential surface of the bellows portion. Here, among the cavities partitioned by the core and the mold, the thickness of the cavity portion forming the corrugated bottom portion of the bellows portion is larger than the thickness of the cavity portion forming the other portions of the bellows portion. It is set.
［作用」
蛇腹部の波底部の肉厚寸法が蛇腹部の他の部分の肉厚寸
法よりも大きく設定されているので、蛇腹部の耐座屈性
が向上する。[Operation] Since the wall thickness of the corrugated bottom portion of the bellows portion is set larger than the wall thickness of other portions of the bellows portion, the buckling resistance of the bellows portion is improved.
［実施例］
以下、本発明の蛇腹付きホースを第１図〜第３図に示し
た一実施例に従って説明する。本実施例の蛇腹付きホー
スの全体図は第２図、第３図に、要部の拡大断面図は第
１図に示されている。[Example] Hereinafter, a bellows-equipped hose of the present invention will be described according to an example shown in FIGS. 1 to 3. An overall view of the bellows-equipped hose of this embodiment is shown in FIGS. 2 and 3, and an enlarged sectional view of the main part is shown in FIG. 1.
本実施例の蛇腹付きホースは、中央に位置する蛇腹部１
と、蛇腹部１の一端に連設された端部５と、蛇腹部１の
細端に連設された端部６とで形成されている。なお、蛇
腹付きホースの材質は塩素化ポリエチレンである。The bellows-equipped hose of this embodiment has a bellows section 1 located in the center.
, an end portion 5 connected to one end of the bellows portion 1, and an end portion 6 connected to a narrow end of the bellows portion 1. The material of the bellows hose is chlorinated polyethylene.
蛇腹部１は、ホース内周面１ａの口径およびホース外周
部１ｂの口径か同期して蛇腹部１の軸方向にそって連続
波状に変化して形成されている。The bellows portion 1 is formed such that the diameter of the inner peripheral surface 1a of the hose and the diameter of the outer peripheral portion 1b of the hose synchronously change in a continuous wave shape along the axial direction of the bellows portion 1.
従って、蛇腹部１は、ホース外周部１ｂの口径か最大と
なる適数個の波山部１０−１５と、ホース内周面１ａの
口径が最小となる適数個の波底部２０〜２４と、それら
の中間に位置する立壁部３０〜３９とを備えている。本
実施例では波山部１０〜１５の頂点のホース口径はｇ
１ ｍｍ、波底部２Ｏ〜２４の底点のホース口径は６３
ｍｍである。Therefore, the bellows portion 1 has an appropriate number of wave crests 10-15 that maximize the diameter of the hose outer circumference 1b, and an appropriate number of wave bottoms 20-24 that minimize the diameter of the hose inner circumference 1a. It is provided with standing wall portions 30 to 39 located in the middle thereof. In this example, the hose diameter at the top of wave crests 10 to 15 is g
1 mm, the hose diameter at the bottom of wave bottoms 20 to 24 is 63
It is mm.
ここで、ホース内周面１ａの法線方向におりるホース内
周面１ａとホース外周部１ｂとの間隔を肉厚寸法とした
とき、蛇腹部１の各部の肉厚寸法は３〜４ｍｍの間で変
化しており、なかでも、波底部２０〜２４の肉厚寸法は
他の部分よりも厚く設定されている。Here, when the distance between the hose inner circumferential surface 1a and the hose outer circumferential portion 1b in the normal direction of the hose inner circumferential surface 1a is defined as the wall thickness dimension, the wall thickness dimension of each part of the bellows portion 1 is 3 to 4 mm. In particular, the wall thickness of the wave bottom portions 20 to 24 is set to be thicker than other portions.
即ち、本実施例では蛇腹部１の波底部２０〜２４の肉厚
寸法ｔ１は４ｍｍ、蛇腹部１の波山部１０〜１５の肉厚
寸法↑２は３ｍｍ、立壁部３０〜３９の肉厚寸法ｔ３は
３ｍｍに設定されている。That is, in this embodiment, the wall thickness t1 of the wave bottom portions 20 to 24 of the bellows portion 1 is 4 mm, the wall thickness ↑2 of the wave crest portions 10 to 15 of the bellows portion 1 is 3 mm, and the wall thickness of the vertical wall portions 30 to 39. t3 is set to 3 mm.
従って、波底部２０〜２４の肉厚寸法ｔ１は蛇腹部１の
他の部分の肉厚寸法よりも大きい。立壁部３０〜３９の
蛇腹部１の軸芯Ｐに対する傾斜角度ｅ１は７６度である
。Therefore, the wall thickness t1 of the corrugated bottom portions 20 to 24 is larger than the wall thickness of the other portions of the bellows portion 1. The inclination angle e1 of the vertical wall portions 30 to 39 with respect to the axis P of the bellows portion 1 is 76 degrees.
なお、蛇腹部１の波底部２０−２／ｌの外面の曲率半径
Ｒ１は１．３ｍｍ、蛇腹部１の波山部１０〜１５の外面
の曲率半径Ｒ２は４ｍｍ、蛇腹部１の波山部１０〜１５
の内面の曲率半径Ｒ３は１ｍｍ、蛇腹部１の波底部２０
〜２４の内面の曲率半径Ｒ４は４ｍｍに設定されている
。The radius of curvature R1 of the outer surface of the wave bottom portion 20-2/l of the bellows portion 1 is 1.3 mm, the radius of curvature R2 of the outer surface of the wave ridge portions 10 to 15 of the bellows portion 1 is 4 mm, and the wave crest portions 10 to 15 of the bellows portion 1 are 4 mm. 15
The radius of curvature R3 of the inner surface is 1 mm, and the wave bottom 20 of the bellows part 1
The radius of curvature R4 of the inner surface of 24 is set to 4 mm.
更に第２図、第３図に示すように蛇腹付きホースの端部
５の回りには、耐産屈性向上のために鍔部５０が形成さ
れており、更に端部５には分岐路５１を形成する突出管
部５２が形成されている。Further, as shown in FIGS. 2 and 3, a flange 50 is formed around the end 5 of the bellows hose in order to improve the resistance to birth flexion, and a branch passage 51 is formed at the end 5. A protruding tube portion 52 is formed.
また、端部６の回りには、耐産屈性向上のために鍔部６
０か形成されている。Additionally, a flange portion 6 is provided around the end portion 6 to improve birth flexion resistance.
0 is formed.
また、本実施例の蛇腹付きホースでは、蛇腹部１のホー
ス内周面１ａの口径が小となる波底部２０〜２４の肉厚
寸法ｔ１か蛇腹部１の他の部分である波山部１０〜１５
の肉厚寸法ｔ２、立壁部３０〜３９の肉厚寸法ｔ３より
も大きく設定されているので、蛇腹部１の耐負圧性を向
上させ得る。In addition, in the bellows-equipped hose of this embodiment, the wall thickness t1 of the corrugated bottom portions 20 to 24 where the diameter of the hose inner circumferential surface 1a of the bellows portion 1 is small or the corrugated crest portions 10 to 24, which are other portions of the bellows portion 1, is 15
Since the wall thickness t2 is set larger than the wall thickness t3 of the vertical wall portions 30 to 39, the negative pressure resistance of the bellows portion 1 can be improved.
従って蛇腹付きホースを吸気系装置に使用してホース内
が負圧となっても、蛇腹部１が大気圧で押圧されて偏平
化することを回避するのに有利である。Therefore, even if a bellows-equipped hose is used in an intake system and the inside of the hose becomes negative pressure, it is advantageous to prevent the bellows section 1 from being pressed by atmospheric pressure and becoming flattened.
ところで、有限要素法（ＦＦＭ）で解析したところ、蛇
腹部の波底部、波山部、立壁部の肉厚が共に等しい従来
の蛇腹付きホースにおけるその蛇腹部の材料体積、耐負
圧性、耐久性をそれぞれ１とすると、この実施例の蛇腹
付きホースの蛇腹部１の体積は１．０２２であり、耐負
圧性は１．１０４であった。即ち、本実施例のホースは
、従来のホースに比較して蛇腹部１の体積が２．２％増
加しているが、耐負圧性か１０．４％増加しており、従
って蛇腹部の月利体積が同じであっても耐負圧性を向上
させ得る。なお耐負圧性は、蛇腹部の波山部を押し潰す
ときの荷重の大きさで評価しＩこ 。By the way, when analyzed using the finite element method (FFM), it was found that the material volume, negative pressure resistance, and durability of the bellows part of a conventional hose with bellows, in which the wall thicknesses of the bottom, crest, and vertical wall of the bellows part are all equal, are respectively 1, the volume of the bellows part 1 of the bellows-equipped hose of this example was 1.022, and the negative pressure resistance was 1.104. That is, in the hose of this example, the volume of the bellows part 1 is increased by 2.2% compared to the conventional hose, but the negative pressure resistance is increased by 10.4%, and therefore the monthly profit of the bellows part is increased by 10.4%. Negative pressure resistance can be improved even if the volume is the same. The negative pressure resistance is evaluated by the magnitude of the load applied when crushing the wave ridges of the bellows part.
次に、本発明の蛇腹付きホースの他の実施例を第４図に
示す。この実施例の蛇腹付きホースは前記した実施例の
場合と基本的に同じ構成であるか、この実施例では、蛇
腹部７の波山部７０〜７６のピッチ、波底部８０〜８５
のピッチは一定ではなく、蛇腹部７の軸方向の中央部で
ある波山部７３に向かうにつれてピッチは小さくなるよ
うに設定されている。即ち、波山部７０の頂点を基準と
したとき、波山部７０の頂点から波底部８０の底点まで
の距離１１０は７．２ｍｍ、波底部８０の底点から波山
部７１の頂点までの距離Ｌ１１は６゜７ｍｍ、波山部７
１の頂点から波底部８１の底点までの距離］−１２は６
．２ｍｍ、波底部８１の底点から波山部７２の頂点まで
の距離１−１３は５゜７ｍｍ、波山部７２の頂点から波
底部８２までの距離１−１４は５．２ｍｍ、波底部８２
の底点から波山部７３の頂点までの距離１−１５は５．
０１ｎｍである。Next, another embodiment of the bellows-equipped hose of the present invention is shown in FIG. The bellows-equipped hose of this embodiment has basically the same configuration as that of the above-described embodiment, or the pitch of the wave crests 70 to 76 of the bellows portion 7 and the pitch of the wave bottoms 80 to 85 of the bellows portion 7 are different.
The pitch is not constant, and is set to become smaller toward the wave ridge portion 73, which is the center portion of the bellows portion 7 in the axial direction. That is, when the peak of the wave crest 70 is taken as a reference, the distance 110 from the peak of the wave crest 70 to the bottom of the wave crest 80 is 7.2 mm, and the distance L11 from the bottom of the wave crest 80 to the peak of the wave crest 71 is 7.2 mm. is 6°7mm, wave crest 7
1 to the bottom of the wave bottom 81] -12 is 6
．． 2 mm, the distance 1-13 from the bottom point of the wave bottom 81 to the top of the wave crest 72 is 5°7 mm, the distance 1-14 from the top of the wave crest 72 to the wave bottom 82 is 5.2 mm, the wave bottom 82
The distance 1-15 from the bottom point to the top of the wave crest 73 is 5.
01 nm.
また、蛇腹部７の波底部８０〜８５の肉厚寸法ｔ１０は
４ｍｍ、蛇腹部７の波山部７０〜７６の肉厚寸法ｔ１１
は３ｍｍ、立壁部９０〜１０３の肉厚寸法ｔ１３は３ｍ
ｍに設定されている。従って、波底部８０〜８５の肉厚
寸法ｔ１０は蛇腹部７の他の部分の肉厚寸法よりも大き
い。なお、波山部７０の外面の曲率半径Ｒ１０、波山部
７１の外面の曲率半径Ｒ１１はそれぞれ４．．５ｍｍ、
波山部７２の外面の曲率半径Ｒ１２、波山部７３の外面
の曲率半径Ｒ１３はぞれぞれ４ｍｍ、波底部８０の内面
の曲率半径Ｒ２０は４．５ｍｍ、波底部８１の内面の曲
率半径Ｒ２１は４．２５ｍｍ、０
波底部８２の内面の曲率半径Ｒ２２は４ｍｍ、波底部８
０の外面の曲率半径Ｒ２３は１．８７ｍｍである。また
、波底部８１の外面の曲率半径Ｒ２５は１．４−ｍｍ、
波底部８２の外面の曲率半径Ｒ２６は１ｍｍである。Further, the wall thickness t10 of the wave bottom portions 80 to 85 of the bellows portion 7 is 4 mm, and the wall thickness dimension t11 of the wave crest portions 70 to 76 of the bellows portion 7.
is 3 mm, and the wall thickness t13 of the vertical wall portions 90 to 103 is 3 m.
m is set. Therefore, the wall thickness t10 of the wave bottoms 80 to 85 is larger than the wall thickness of the other portions of the bellows portion 7. The radius of curvature R10 of the outer surface of the wave crest portion 70 and the radius of curvature R11 of the outer surface of the wave crest portion 71 are each 4. ．． 5mm,
The radius of curvature R12 of the outer surface of the wave crest portion 72 and the radius of curvature R13 of the outer surface of the wave crest portion 73 are each 4 mm, the radius of curvature R20 of the inner surface of the wave bottom portion 80 is 4.5 mm, and the radius of curvature R21 of the inner surface of the wave bottom portion 81 is 4.25 mm, 0 The radius of curvature R22 of the inner surface of the wave bottom 82 is 4 mm, the wave bottom 8
The radius of curvature R23 of the outer surface of 0 is 1.87 mm. Further, the radius of curvature R25 of the outer surface of the wave bottom portion 81 is 1.4-mm,
The radius of curvature R26 of the outer surface of the wave bottom portion 82 is 1 mm.
なあ、波山部７０〜７６の頂点のホース口径は９’１ｍ
ｍ、波底部８０〜８５の底点のホース口径は６８ｍｍで
ある。なお、蛇腹部７の材質は塩素化ポリエチレンでお
る。Hey, the hose diameter at the top of wave crests 70 to 76 is 9'1m.
m, the hose diameter at the bottom point of the wave bottom portions 80 to 85 is 68 mm. The material of the bellows part 7 is chlorinated polyethylene.
第４図に示す実施例においても波底部８０〜８５の肉厚
用法１−１０は蛇腹部７の他の部分の肉厚」法よりも大
ぎく設定されているので蛇腹部７の耐負圧性を向上させ
得る。この実施例の蛇腹付きホースについても、有限要
素法（Ｆ ＩＥ Ｍ ）で解析したところ、この実施例
の蛇腹付きホースの蛇腹部７の体積は１．０３１であり
、耐負圧性は１゜１７６で必った。即ち、蛇腹部に用い
る材料体積は３．１％増加したが、耐負圧性は１７．６
％増加した。Also in the embodiment shown in FIG. 4, the wall thickness method 1-10 of the corrugated bottom portions 80 to 85 is set to be larger than that of the other portions of the bellows portion 7, so that the negative pressure resistance of the bellows portion 7 is determined. It can be improved. The bellows-equipped hose of this example was also analyzed using the finite element method (FIEM), and the volume of the bellows part 7 of the bellows-equipped hose of this example was 1.031, and the negative pressure resistance was 1°176. I had to. In other words, the volume of material used for the bellows part increased by 3.1%, but the negative pressure resistance decreased by 17.6%.
% increase.
なお、前記した各実施例の蛇腹付きホースは、１
自動車のエンジンに外気を導入する吸気系装置であるエ
アクリーナ、エアフローメータ、吸気マニホールドに接
続して使用することができる。更に、コンプレッサ等の
他の吸気系の産業機器に接続して使用することもできる
。Note that the bellows-equipped hose of each of the embodiments described above can be used by being connected to an air cleaner, an air flow meter, and an intake manifold, which are intake system devices that introduce outside air into the engine of an automobile. Furthermore, it can also be used by connecting to other intake system industrial equipment such as a compressor.
［発明の効果］
本発明の蛇腹付きポルスによれば、蛇腹部のホース内周
面の口径か小となる波底部の肉厚寸法が蛇腹部の他の肉
厚１法よりも大ぎく設定されているので、蛇腹部仝休の
肉厚を厚くしたり蛇腹部の材料を大きな剛性をもつもの
に変更したりする手段を採用することなく、負圧による
応力に効果的に耐えることができ、耐負圧性を向上させ
ることができる。従って蛇腹付きホース内が負圧となっ
ても蛇腹部が座屈することを回避づるのに有利である。[Effects of the Invention] According to the bellows-equipped porus of the present invention, the wall thickness dimension of the corrugated bottom portion where the diameter of the inner peripheral surface of the hose of the bellows portion is smaller is set to be larger than that of the other wall thickness method 1 of the bellows portion. Therefore, it is possible to effectively withstand stress caused by negative pressure without having to increase the wall thickness of the bellows part or change the material of the bellows part to one with greater rigidity. Negative pressure resistance can be improved. Therefore, it is advantageous to avoid buckling of the bellows part even if the inside of the bellows hose becomes negative pressure.
第１図〜第３図は本発明の一実施例を示し、第１図は蛇
腹部の拡大断面図、第２図は蛇腹部を省略して示す全体
の側面図、第３図は蛇腹部を省略２
して示す全体の平面図である。第４図は本発明の他の実
施例を示し蛇腹部の拡大断面図である。
図中、１は蛇腹部、１０・〜１５は波山部、２０〜２４
は波底部、３０〜３９は立壁部を示ず。1 to 3 show one embodiment of the present invention, FIG. 1 is an enlarged sectional view of the bellows portion, FIG. 2 is a side view of the entire bellows portion with the bellows portion omitted, and FIG. 3 is a side view of the bellows portion. FIG. 2 is a plan view of the entire structure with 2 omitted. FIG. 4 shows another embodiment of the present invention and is an enlarged sectional view of the bellows portion. In the figure, 1 is the bellows part, 10-15 is the wave crest part, 20-24
30 to 39 indicate the wave bottom, and 30 to 39 do not indicate the standing wall.
Claims (1)
ス外周面の口径が同期して軸方向に連続波状に変化する
蛇腹部をもつ蛇腹付きホースであって、 前記ホース内周面の法線方向の前記ホース内周面と前記
ホース外周面との間隔を肉厚寸法としたとき、前記蛇腹
部の前記ホース内周面の口径が小となる波底部の肉厚寸
法が前記蛇腹部の他の肉厚寸法よりも大きく設定されて
いることを特徴とする蛇腹付きホース。(1) A bellows-equipped hose having at least a portion of the bellows portion in which the diameter of the inner circumferential surface of the hose and the diameter of the outer circumferential surface of the hose synchronously change in a continuous wave-like manner in the axial direction, the normal line of the inner circumferential surface of the hose When the distance between the inner circumferential surface of the hose and the outer circumferential surface of the hose in the direction is defined as the wall thickness dimension, the wall thickness dimension of the corrugated bottom portion where the diameter of the inner circumferential surface of the hose of the bellows portion is smaller is the thickness dimension other than the bellows portion. A bellows-equipped hose characterized by having a wall thickness larger than that of the bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1333217A JP2883380B2 (en) | 1989-12-23 | 1989-12-23 | Negative pressure resistant hose with bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1333217A JP2883380B2 (en) | 1989-12-23 | 1989-12-23 | Negative pressure resistant hose with bellows |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03194282A true JPH03194282A (en) | 1991-08-23 |
| JP2883380B2 JP2883380B2 (en) | 1999-04-19 |
Family
ID=18263625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1333217A Expired - Fee Related JP2883380B2 (en) | 1989-12-23 | 1989-12-23 | Negative pressure resistant hose with bellows |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2883380B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004515740A (en) * | 2000-12-16 | 2004-05-27 | プラギット インターナショナル ナムローゼ フェンノートシャップ | conduit |
| JP2007247662A (en) * | 2006-03-13 | 2007-09-27 | Toyoda Gosei Co Ltd | Bellows hose |
| CN106014717A (en) * | 2016-06-24 | 2016-10-12 | 天津雷沃动力有限公司 | Vacuum air intake rubber hose for diesel engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54119405A (en) * | 1978-03-09 | 1979-09-17 | Japan Synthetic Rubber Co Ltd | Preparation of diol |
| JPS55121195A (en) * | 1979-03-13 | 1980-09-18 | Nippon Atomic Ind Group Co | Boiling water reactor |
| JPS5635979U (en) * | 1979-08-29 | 1981-04-07 | ||
| JPS6220224A (en) * | 1985-07-18 | 1987-01-28 | Toshiba Corp | Color picture tube |
| JPS63128382U (en) * | 1987-02-13 | 1988-08-22 |
-
1989
- 1989-12-23 JP JP1333217A patent/JP2883380B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54119405A (en) * | 1978-03-09 | 1979-09-17 | Japan Synthetic Rubber Co Ltd | Preparation of diol |
| JPS55121195A (en) * | 1979-03-13 | 1980-09-18 | Nippon Atomic Ind Group Co | Boiling water reactor |
| JPS5635979U (en) * | 1979-08-29 | 1981-04-07 | ||
| JPS6220224A (en) * | 1985-07-18 | 1987-01-28 | Toshiba Corp | Color picture tube |
| JPS63128382U (en) * | 1987-02-13 | 1988-08-22 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004515740A (en) * | 2000-12-16 | 2004-05-27 | プラギット インターナショナル ナムローゼ フェンノートシャップ | conduit |
| JP2007247662A (en) * | 2006-03-13 | 2007-09-27 | Toyoda Gosei Co Ltd | Bellows hose |
| JP4692338B2 (en) * | 2006-03-13 | 2011-06-01 | 豊田合成株式会社 | Bellows hose |
| CN106014717A (en) * | 2016-06-24 | 2016-10-12 | 天津雷沃动力有限公司 | Vacuum air intake rubber hose for diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2883380B2 (en) | 1999-04-19 |
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| LAPS | Cancellation because of no payment of annual fees |