WO2023120601A1 - Bellows mounting structure - Google Patents

Bellows mounting structure Download PDF

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Publication number
WO2023120601A1
WO2023120601A1 PCT/JP2022/047203 JP2022047203W WO2023120601A1 WO 2023120601 A1 WO2023120601 A1 WO 2023120601A1 JP 2022047203 W JP2022047203 W JP 2022047203W WO 2023120601 A1 WO2023120601 A1 WO 2023120601A1
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WO
WIPO (PCT)
Prior art keywords
bellows
mounting structure
valley
fixing member
flange
Prior art date
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PCT/JP2022/047203
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French (fr)
Japanese (ja)
Inventor
武儀 新堀
壮一 中山
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日本発條株式会社
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Publication of WO2023120601A1 publication Critical patent/WO2023120601A1/en

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    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/50—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall
    • F16J15/52—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall by means of sealing bellows or diaphragms
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows

Definitions

  • the present invention relates to a bellows mounting structure.
  • bellows have been used as airtight and stretchable fluid separation membranes or fluid sealing membranes in air springs, anti-vibration devices, vehicle suspension devices, accumulators, high-pressure pumps, and the like (for example, Patent Document 1 , 2).
  • the bellows has a bellows-like central portion and expands and contracts according to the applied load.
  • the bellows is attached to the fixing plate with a cylindrical end.
  • JP-A-10-148258 Japanese Patent No. 4140872
  • a bellows mounting structure is a bellows mounting structure in which a cylindrical bellows is mounted to a fixing member, the bellows being provided at both ends. a bellows portion provided between the straight pipe portions and formed by repeating uneven shapes; and a connecting portion connected to the straight pipe portion and the bellows portion, wherein the bellows portion is bent. a set of protruding shapes consisting of a trough, a ridge bent in the opposite manner to the trough, and an abdomen extending from the ridge in the same manner as the ridge, respectively. Repeatedly, among the plurality of abdomens, an abdomen connected to the connecting portion abuts on the fixing member, a space is formed between the fixing member and the connecting portion, and the valley portion includes: A viscoelastic ring is provided.
  • the bellows mounting structure according to the present invention is characterized in that, in the above invention, a viscoelastic ring is provided between the fixing member and the connecting portion.
  • a bellows mounting structure is a bellows mounting structure in which a cylindrical bellows is mounted to a fixing member, and the bellows includes straight pipe portions provided at both end portions and a portion between the straight pipe portions. and a connecting portion connected to the straight tube portion and the bellows portion.
  • a set of protrusion shapes consisting of a mountain portion bent in the manner of and an abdomen provided between the valley portion and the mountain portion is repeated, and the valley portion has a first viscoelastic ring
  • a second viscoelastic ring is provided between the fixing member and the connecting part.
  • the bellows mounting structure according to the present invention is characterized in that, in the above invention, the abdomen extends while bending in the same manner as the peak portion.
  • the bellows mounting structure according to the present invention is characterized in that, in the above invention, the pair of abdominal portions extending from the same valley portion are in contact with each other.
  • FIG. 1 is a cross-sectional view showing the configuration of a pressure regulating device according to Embodiment 1 of the present invention.
  • FIG. 2 is a diagram showing a bellows mounting structure in which the configuration of region R shown in FIG. 1 is enlarged.
  • FIG. 3 is a diagram showing a bellows mounting structure according to the second embodiment.
  • FIG. 4 is a diagram showing a bellows mounting structure according to the third embodiment.
  • FIG. 5 is a diagram showing a bellows mounting structure according to the fourth embodiment.
  • FIG. 6 is a diagram showing an example of load-deflection measurement results in the bellows mounting structure according to the fourth embodiment.
  • FIG. 1 is a cross-sectional view showing the configuration of a pressure regulating device according to Embodiment 1 of the present invention.
  • FIG. 2 is a diagram showing a bellows mounting structure in which the configuration of region R shown in FIG. 1 is enlarged.
  • Bellows mounting structure 1 shown in FIG. Flange 15, first O-ring 16, second O-ring 17, inner cylinder guide 18, bolt 19, plain washer 20, spring washer 21, guide bellows 22, pneumatic joint 23, viscoelastic ring 24.
  • a fixing member is configured by lower fixing plate 11 and first flange 14 or upper fixing plate 12 and second flange 15 .
  • the bellows 13 is interposed between the lower fixing plate 11 and the upper fixing plate 12 to form an internal space S1 .
  • This internal space S 1 communicates with the outside through the hole 23 a of the pneumatic joint 23 .
  • the bellows 13 includes cylindrical straight pipe portions 13a provided at both ends, a bellows-like bellows portion 13b provided between the straight pipe portions 13a and formed by repeating uneven shapes, the straight pipe portion 13a and the bellows portion 13b. It has the connection part 13c which connects.
  • the bellows portion 13b includes a curved valley portion 13d, a peak portion 13e that is curved in a manner opposite to that of the valley portion 13d, and extends from the peak portion 13e to the valley portion 13d side.
  • the projecting shape protrudes outward from the straight tube portion 13a.
  • the bellows portions 13f that face each other via the ridges 13e are curved away from each other at the central portion of the bellows portion 13b in the direction in which the bellows portion 13b protrudes from the straight pipe portion 13a (here, the left-right direction in FIG. 2).
  • the bellows portion 13b repeats an ⁇ -shaped protuberance in which the central portion is convexly bulged in a cross section taken along a plane parallel to and passing through the central axis of the cylinder.
  • the penetration direction of the bellows 13 be a longitudinal direction.
  • the bellows 13 is provided between the inner cylinder guide 18, and by providing the guide bellows 22 that maintains the distance between the inner cylinder guide 18 and the bellows 13, the expansion and contraction operation can be performed smoothly.
  • the inner cylinder guide 18 is provided in the internal space S 1 and fixed to the lower fixing plate 11 by bolts 19 via plain washers 20 and spring washers 21 .
  • FIG. 2 shows part of the mounting portion between the upper fixing plate 12 and the bellows 13 .
  • the manner in which the upper fixing plate 12 and the bellows 13 are attached will be described below, but the manner in which the lower fixing plate 11 and the bellows 13 are attached is the same.
  • a straight tube portion 13 a of the bellows 13 extends along inner walls of the upper fixing plate 12 and the second flange 15 .
  • the straight pipe portion 13a is in contact with part of the corner portion of the second flange 15.
  • a second O-ring 17 is provided in the space formed by the upper fixing plate 12 , the bellows 13 and the second flange 15 to ensure airtightness between the upper fixing plate 12 and the bellows 13 .
  • the first O-ring 16 and the second O-ring 17 are formed using an elastic body.
  • a portion 13 f of the bellows portion 13 f connected to the connecting portion 13 c is in contact with the wall surface 15 a of the second flange 15 .
  • the corners of the second flange 15 facing the connecting portion 13c are chamfered, the connecting portion 13c does not contact the second flange 15, and there is a gap between the connecting portion 13c and the second flange 15.
  • a space S 2 is formed in .
  • a viscoelastic ring 24 is provided on the outer side of the valley portion 13d of the bellows portion 13b.
  • the elastic force of the viscoelastic ring 24 controls the bending (crushing) of the valley portion 13d and the distance between the opposing abdomens 13f.
  • the viscoelastic ring 24 may apply no load to the trough portion 13d of the bellows 13 in the direction orthogonal to the longitudinal direction, or may apply a tightening load so as to reduce the distance in the longitudinal direction. .
  • the bellows mounting structure 1 when the pressure in the internal space S1 is increased via the pneumatic joint 23, the bellows portion 13b of the bellows 13 expands and extends in the longitudinal direction, and the lower fixing plate 11 and the upper fixing plate 12 are brought into contact with each other. Move away.
  • the bellows mounting structure 1 functions, for example, as an air spring that adjusts the load applied to the object in contact with the lower fixing plate 11 by moving the fixing plate.
  • the abdomen 13f contacts the flanges (the first flange 14 and the second flange 15), and a space (for example, space S 2 ) is formed between the connecting portion 13c and the flanges.
  • a space for example, space S 2
  • the stress acting due to elongation of the bellows portion 13b is distributed to the abdomen portion 13f, and damage to the bellows 13 is suppressed.
  • the bellows mounting structure 1 has a viscoelastic ring 24 disposed in the valley portion 13d, the abdomen 13f of the bellows portion 13b is brought into contact with the flange, and a space ( The above effects can be obtained only by forming the space S 2 ). According to Embodiment 1, the stress applied to the bellows can be reduced with a simple configuration.
  • FIG. 3 is a diagram showing a bellows mounting structure according to the second embodiment.
  • symbol is attached
  • the bellows mounting structure according to the second embodiment includes a second flange 15A instead of the second flange 15, and further includes a second viscoelastic ring 25.
  • the viscoelastic ring 24 corresponds to the first viscoelastic ring.
  • the second flange 15A has an inclined surface 15c at a portion of the wall surface 15b facing the bellows portion 13b, which faces the connecting portion 13c.
  • a second viscoelastic ring 25 is provided in the space S3 formed by the bellows 13 and the inclined surface 15c.
  • a viscoelastic ring is similarly provided on the first flange side.
  • the bellows portion 13b of the bellows 13 expands and the lower fixing plate 11 and the upper fixed plate 12 move away from each other.
  • a viscoelastic ring 24 is provided in the valley portion 13d, and a second viscoelastic ring 25 is interposed between the connecting portion 13c and the flange. Damage to the bellows 13 is suppressed.
  • the bellows mounting structure according to the second embodiment obtains the above-described effects only by arranging the viscoelastic ring 24 in the valley portion 13d and interposing the second viscoelastic ring 25 between the connecting portion 13c and the flange. be able to. According to the second embodiment, the stress applied to the bellows can be reduced with a simple configuration.
  • the abdominal portion 13f of the bellows 13 is curved in the same manner as the peak portion 13e as shown in FIG. , or may be curved in the same manner as the valley 13d.
  • the abdomen 13f is curved in the same manner as the peaks 13e, it is preferable because the viscoelastic ring 24 can be prevented from slipping off by sandwiching the viscoelastic ring 24 between the abdomens 13f.
  • FIG. 4 is a diagram showing a bellows mounting structure according to the third embodiment.
  • symbol is attached
  • the bellows mounting structure according to the third embodiment includes a second flange 15B instead of the second flange 15, and further includes a second viscoelastic ring 26.
  • the second flange 15B has an inclined surface 15e at a portion of the wall surface 15d facing the bellows portion 13b facing the connecting portion 13c.
  • a second viscoelastic ring 26 is provided in the space S4 formed by the bellows 13 and the inclined surface 15e. Further, the abdomen 13f connected to the connecting portion 13c is in contact with the wall surface 15d of the second flange 15. As shown in FIG. A viscoelastic ring is similarly provided on the first flange side.
  • the bellows portion 13b of the bellows 13 expands and the lower fixing plate 11 and the upper fixed plate 12 move away from each other.
  • a viscoelastic ring 24 is provided in the valley portion 13d, the abdomen 13f contacts the flange, and a second viscoelastic ring 26 is interposed between the connecting portion 13c and the flange, thereby extending the bellows portion 13b.
  • the stress that acts on the bellows 13 is dispersed, and damage to the bellows 13 is suppressed.
  • the bellows mounting structure according to the third embodiment has the abdomen 13f of the bellows portion 13b in contact with the flange, the viscoelastic ring 24 (first viscoelastic ring) is disposed in the valley portion 13d, and the connecting portion 13c
  • the effect described above can be obtained only by interposing the second viscoelastic ring 26 between the flange.
  • the stress applied to the bellows can be reduced with a simple configuration.
  • FIG. 5 is a diagram showing a bellows mounting structure according to the fourth embodiment.
  • symbol is attached
  • the bellows mounting structure according to the fourth embodiment has the same constituent elements as those of the first embodiment, but differs from the bellows portion 13b according to the first embodiment in its contact manner.
  • the abdominal portions 13 f extending from the same valley portion 13 d contact each other, and the abdominal portions 13 f connected to the connecting portion 13 c contact the wall surface 15 a of the second flange 15 . touch.
  • the abdomens 13f may be separated from each other.
  • the connecting portion 13 c does not contact the second flange 15 , and a space S 2 is formed between the connecting portion 13 c and the second flange 15 .
  • a viscoelastic ring 24 is provided on the outer side of the valley portion 13d of the bellows portion 13b.
  • the elastic force of the viscoelastic ring 24 controls bending (crushing) of the valley portion 13d.
  • the bellows portion 13b of the bellows 13 expands and the lower fixing plate 11 and the upper fixed plate 12 move away from each other.
  • a viscoelastic ring 24 is provided in the valley portion 13d, and the abdominal portion 13f positioned closest to the straight pipe portion 13a contacts the flange, and the other adjacent abdominal portions 13f contact each other, whereby the bellows portion 13b is deformed. The stress acting due to elongation or the like is dispersed, and damage to the bellows 13 is suppressed.
  • the bellows mounting structure according to the fourth embodiment has the viscoelastic ring 24 disposed in the valley portion 13d, the abdomen 13f of the bellows portion 13b is brought into contact with the flange, and the other abdomens 13f are only in contact with each other. effect can be obtained. According to the fourth embodiment, the stress applied to the bellows can be reduced with a simple configuration.
  • FIG. 6 is a diagram showing an example of the load-deflection measurement results in the bellows mounting structure according to the fourth embodiment.
  • FIG. 6 shows that when the deflection of the bellows 13 reaches 0.5 mm, the abdomens 13f begin to come into contact with each other, and the load increases non-linearly as the deflection increases. This is because as the bending of the bellows 13 in the direction of compression increases, the contact area between the abdomens 13f increases, and the generated load increases non-linearly.
  • the nonlinearity of the load curve indicates the distribution of stress in the bellows 13, and it can be said that the stress applied to the bellows 13 is reduced. Due to this non-linearity, the durability can be further improved, and together with the above-described shortening of the attachment length, the size and weight can be reduced.
  • the present invention should not be limited only to the above-described embodiments.
  • the bellows 13 may be subjected to surface processing such as coating or polishing in order to reduce friction or the like.
  • the viscoelastic ring and the O-ring are not limited to the illustrated cross-sectional shape, and the design can be changed.
  • the bellows mounting structure according to the present invention is suitable for reducing the stress applied to the bellows with a simple configuration.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Diaphragms And Bellows (AREA)
  • Sealing Devices (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

In a bellows mounting structure according to the present invention, a tubular bellows is mounted to a fixing member. The bellows comprises straight tube portions provided at both end portions, a bellows portion provided between the straight tube portions and formed by repeating a recessed and protruding shape, and a coupling portion continuously extending to the straight tube portions and the bellows portion. The bellows portion is formed by repeating a set of protrusion shape formed from a trough portion formed through bending, a crest portion formed through bending in a manner reverse to that of the trough portion, and flank portions extending from the crest portion through bending in the same manner as that of the crest portion, and a flank portion continuously extending to the coupling portion from among a plurality of flank portions abuts against the fixing member. A space is formed between the fixing member and the coupling portion, and a viscoelastic ring is provided to each trough portion.

Description

ベローズの取付構造Bellows mounting structure
　本発明は、ベローズの取付構造に関する。 The present invention relates to a bellows mounting structure.
　従来、空気ばねや、防振装置、車両用懸袈装置、アキュムレータ、高圧ポンプ等において、気密性および伸縮性を有する流体分離膜または流体密封膜としてベローズが用いられている（例えば、特許文献１、２を参照）。ベローズは、中央部が蛇腹状をなし、加わる荷重に応じて伸縮する。また、ベローズは、端部が筒状をなして固定板に取り付けられる。 Conventionally, bellows have been used as airtight and stretchable fluid separation membranes or fluid sealing membranes in air springs, anti-vibration devices, vehicle suspension devices, accumulators, high-pressure pumps, and the like (for example, Patent Document 1 , 2). The bellows has a bellows-like central portion and expands and contracts according to the applied load. Also, the bellows is attached to the fixing plate with a cylindrical end.
特開平１０－１４８２５８号公報JP-A-10-148258 特許第４１４０８７２号公報Japanese Patent No. 4140872
　ところで、ベローズの中央部の最も端部（最端部）側を固定板に接触させることによって固定板に対してベローズを位置決めする構成では、圧縮時に中央部の端部側に圧縮応力が加わり、ベローズが破損するおそれがあった。一方、この圧縮応力を低減するために、固定板とベローズの中央部の最端部とを接触させない構成が挙げられる。しかしながら、この構成にすると、固定板に対するベローズの位置決め精度が低下するため、位置決めするための手段が必要となり、構成が複雑化してしまう場合があった。 By the way, in a configuration in which the bellows is positioned with respect to the fixing plate by bringing the endmost (endmost) side of the central portion of the bellows into contact with the fixing plate, compressive stress is applied to the end side of the central portion during compression, There was a risk that the bellows would be damaged. On the other hand, in order to reduce this compressive stress, there is a configuration in which the fixed plate and the extreme end portion of the central portion of the bellows are not brought into contact with each other. However, with this configuration, the positioning accuracy of the bellows with respect to the fixed plate is lowered, so a means for positioning is required, which may complicate the configuration.
　本発明は、上記に鑑みてなされたものであって、簡易な構成でベローズに加わる応力を低減することができるベローズの取付構造を提供することを目的とする。 It is an object of the present invention to provide a bellows mounting structure capable of reducing the stress applied to the bellows with a simple configuration.
　上述した課題を解決し、目的を達成するために、本発明に係るベローズの取付構造は、筒状のベローズを固定部材に取り付けたベローズの取付構造であって、前記ベローズは、両端部に設けられる直管部と、前記直管部の間に設けられ、凹凸形状を繰り返してなる蛇腹部と、前記直管部および前記蛇腹部に連なる連結部と、を備え、前記蛇腹部は、屈曲してなる谷部と、前記谷部とは逆の態様で屈曲してなる山部と、前記山部から該山部と同じ態様でそれぞれ屈曲して延びる腹部と、からなる一組の突起形状を繰り返してなり、複数の前記腹部のうち、前記連結部に連なる腹部は、前記固定部材に当接し、前記固定部材と前記連結部との間には、空間が形成され、前記谷部には、粘弾性リングが設けられる、ことを特徴とする。 In order to solve the above-described problems and achieve the object, a bellows mounting structure according to the present invention is a bellows mounting structure in which a cylindrical bellows is mounted to a fixing member, the bellows being provided at both ends. a bellows portion provided between the straight pipe portions and formed by repeating uneven shapes; and a connecting portion connected to the straight pipe portion and the bellows portion, wherein the bellows portion is bent. a set of protruding shapes consisting of a trough, a ridge bent in the opposite manner to the trough, and an abdomen extending from the ridge in the same manner as the ridge, respectively. Repeatedly, among the plurality of abdomens, an abdomen connected to the connecting portion abuts on the fixing member, a space is formed between the fixing member and the connecting portion, and the valley portion includes: A viscoelastic ring is provided.
　また、本発明に係るベローズの取付構造は、上記発明において、前記固定部材と前記連結部との間には、粘弾性リングが設けられることを特徴とする。 Further, the bellows mounting structure according to the present invention is characterized in that, in the above invention, a viscoelastic ring is provided between the fixing member and the connecting portion.
　また、本発明に係るベローズの取付構造は、筒状のベローズを固定部材に取り付けたベローズの取付構造であって、前記ベローズは、両端部に設けられる直管部と、前記直管部の間に設けられ、凹凸形状を繰り返してなる蛇腹部と、前記直管部および前記蛇腹部に連なる連結部と、を備え、前記蛇腹部は、屈曲してなる谷部と、前記谷部とは逆の態様で屈曲してなる山部と、前記谷部および前記山部の間に設けられる腹部と、からなる一組の突起形状を繰り返してなり、前記谷部には、第１粘弾性リングが設けられ、前記固定部材と前記連結部との間には、第２粘弾性リングが設けられることを特徴とする。 In addition, a bellows mounting structure according to the present invention is a bellows mounting structure in which a cylindrical bellows is mounted to a fixing member, and the bellows includes straight pipe portions provided at both end portions and a portion between the straight pipe portions. and a connecting portion connected to the straight tube portion and the bellows portion. A set of protrusion shapes consisting of a mountain portion bent in the manner of and an abdomen provided between the valley portion and the mountain portion is repeated, and the valley portion has a first viscoelastic ring A second viscoelastic ring is provided between the fixing member and the connecting part.
　また、本発明に係るベローズの取付構造は、上記発明において、前記腹部は、前記山部と同じ態様で屈曲して延びることを特徴とする。 In addition, the bellows mounting structure according to the present invention is characterized in that, in the above invention, the abdomen extends while bending in the same manner as the peak portion.
　また、本発明に係るベローズの取付構造は、上記発明において、同一の前記谷部から延びる一対の前記腹部同士が接触することを特徴とする。 In addition, the bellows mounting structure according to the present invention is characterized in that, in the above invention, the pair of abdominal portions extending from the same valley portion are in contact with each other.
　本発明によれば、簡易な構成でベローズに加わる応力を低減することができるという効果を奏する。 According to the present invention, it is possible to reduce the stress applied to the bellows with a simple configuration.
図１は、本発明の実施の形態１にかかる圧力調整装置の構成を示す断面図である。FIG. 1 is a cross-sectional view showing the configuration of a pressure regulating device according to Embodiment 1 of the present invention. 図２は、図１に示す領域Ｒの構成を拡大したベローズ取付構造を示す図である。FIG. 2 is a diagram showing a bellows mounting structure in which the configuration of region R shown in FIG. 1 is enlarged. 図３は、実施の形態２にかかるベローズ取付構造を示す図である。FIG. 3 is a diagram showing a bellows mounting structure according to the second embodiment. 図４は、実施の形態３にかかるベローズ取付構造を示す図である。FIG. 4 is a diagram showing a bellows mounting structure according to the third embodiment. 図５は、実施の形態４にかかるベローズ取付構造を示す図である。FIG. 5 is a diagram showing a bellows mounting structure according to the fourth embodiment. 図６は、実施の形態４にかかるベローズ取付構造における荷重－撓みの計測結果の一例を示す図である。FIG. 6 is a diagram showing an example of load-deflection measurement results in the bellows mounting structure according to the fourth embodiment.
　以下、添付図面を参照して本発明を実施するための形態（以下、「実施の形態」という）を説明する。なお、図面は模式的なものであって、各部分の厚みと幅との関係、それぞれの部分の厚みの比率などは現実のものとは異なる場合があり、図面の相互間においても互いの寸法の関係や比率が異なる部分が含まれる場合がある。 A mode for carrying out the present invention (hereinafter referred to as "embodiment") will be described below with reference to the accompanying drawings. The drawings are schematic, and the relationship between the thickness and width of each part, the ratio of the thickness of each part, etc. may differ from the actual ones. may include parts with different relationships and ratios.
（実施の形態１）
　図１は、本発明の実施の形態１にかかる圧力調整装置の構成を示す断面図である。図２は、図１に示す領域Ｒの構成を拡大したベローズ取付構造を示す図である。図１に示すベローズ取付構造１は、下側固定板１１と、上側固定板１２と、下側固定板１１および上側固定板１２の間に設けられるベローズ１３と、第１フランジ１４と、第２フランジ１５と、第１Ｏリング１６と、第２Ｏリング１７と、内筒ガイド１８と、ボルト１９と、平座金２０と、ばね座金２１と、ガイドベローズ２２と、空圧継手２３と、粘弾性リング２４とを備える。本実施の形態１においては、下側固定板１１および第１フランジ１４、または上側固定板１２および第２フランジ１５によって固定部材が構成される。 (Embodiment 1)
FIG. 1 is a cross-sectional view showing the configuration of a pressure regulating device according to Embodiment 1 of the present invention. FIG. 2 is a diagram showing a bellows mounting structure in which the configuration of region R shown in FIG. 1 is enlarged. Bellows mounting structure 1 shown in FIG. Flange 15, first O-ring 16, second O-ring 17, inner cylinder guide 18, bolt 19, plain washer 20, spring washer 21, guide bellows 22, pneumatic joint 23, viscoelastic ring 24. In Embodiment 1, a fixing member is configured by lower fixing plate 11 and first flange 14 or upper fixing plate 12 and second flange 15 .
　ベローズ取付構造１では、下側固定板１１と上側固定板１２との間にベローズ１３が介在し、内部空間Ｓ1を形成する。この内部空間Ｓ1は、空圧継手２３の孔２３ａを経て外部と連通する。 In the bellows mounting structure 1, the bellows 13 is interposed between the lower fixing plate 11 and the upper fixing plate 12 to form an internal space S1 . This internal space S 1 communicates with the outside through the hole 23 a of the pneumatic joint 23 .
　ベローズ１３は、両端部に設けられる筒状の直管部１３ａと、直管部１３ａ間に設けられ、凹凸形状を繰り返してなる蛇腹状の蛇腹部１３ｂと、直管部１３ａおよび蛇腹部１３ｂを連結する連結部１３ｃとを有する。蛇腹部１３ｂは、湾曲してなる谷部１３ｄと、谷部１３ｄとは湾曲態様が逆の湾曲態様で湾曲してなる山部１３ｅと、山部１３ｅから谷部１３ｄ側にそれぞれ延び、山部１３ｅと同じ湾曲態様で湾曲してなる腹部１３ｆとを有し、谷部１３ｄ、山部１３ｅ、および、山部１３ｅを経て対向する二つの腹部１３ｆを一組の突起形状とし、該突起形状を繰り返してなる（図２参照）。突起形状は、直管部１３ａに対して、外部側に突出する。山部１３ｅを経て対向する腹部１３ｆ同士は、蛇腹部１３ｂが直管部１３ａに対して突出する突出方向（ここでは図２の左右方向）における蛇腹部１３ｂの中央部において互いに離れるように湾曲してなる。蛇腹部１３ｂは、筒の中心軸と平行かつこの中心軸を通過する平面を切断面とする断面において、中央部が凸状に膨らんだΩ状をなす突起形状を繰り返してなる。なお、ベローズ１３の貫通方向を長手方向とする。 The bellows 13 includes cylindrical straight pipe portions 13a provided at both ends, a bellows-like bellows portion 13b provided between the straight pipe portions 13a and formed by repeating uneven shapes, the straight pipe portion 13a and the bellows portion 13b. It has the connection part 13c which connects. The bellows portion 13b includes a curved valley portion 13d, a peak portion 13e that is curved in a manner opposite to that of the valley portion 13d, and extends from the peak portion 13e to the valley portion 13d side. It has an abdomen 13f that is curved in the same manner as 13e, and the valley 13d, the peak 13e, and the two abdomens 13f that face each other via the peak 13e are formed into a set of protrusion shapes, and the protrusion shapes are formed into a pair of protrusion shapes. It is repeated (see FIG. 2). The projecting shape protrudes outward from the straight tube portion 13a. The bellows portions 13f that face each other via the ridges 13e are curved away from each other at the central portion of the bellows portion 13b in the direction in which the bellows portion 13b protrudes from the straight pipe portion 13a (here, the left-right direction in FIG. 2). It becomes The bellows portion 13b repeats an Ω-shaped protuberance in which the central portion is convexly bulged in a cross section taken along a plane parallel to and passing through the central axis of the cylinder. In addition, let the penetration direction of the bellows 13 be a longitudinal direction.
　また、ベローズ１３は、内筒ガイド１８との間に設けられ、当該内筒ガイド１８とベローズ１３との間の間隔を維持するガイドベローズ２２を設けることによって、円滑に伸縮動作を行うことができる。 Further, the bellows 13 is provided between the inner cylinder guide 18, and by providing the guide bellows 22 that maintains the distance between the inner cylinder guide 18 and the bellows 13, the expansion and contraction operation can be performed smoothly. .
　内筒ガイド１８は、内部空間Ｓ1に設けられ、内筒ガイド１８は、平座金２０およびばね座金２１を介してボルト１９によって下側固定板１１に固定される。 The inner cylinder guide 18 is provided in the internal space S 1 and fixed to the lower fixing plate 11 by bolts 19 via plain washers 20 and spring washers 21 .
　続いて、ベローズ１３の固定板（下側固定板１１および上側固定板１２）への取り付け態様について図２を参照して説明する。図２では、上側固定板１２とベローズ１３との取り付け部分の一部を示している。以下、上側固定板１２とベローズ１３との取り付け態様について説明するが、下側固定板１１とベローズ１３との取り付け態様も同様である。 Next, how the bellows 13 is attached to the fixing plates (lower fixing plate 11 and upper fixing plate 12) will be described with reference to FIG. FIG. 2 shows part of the mounting portion between the upper fixing plate 12 and the bellows 13 . The manner in which the upper fixing plate 12 and the bellows 13 are attached will be described below, but the manner in which the lower fixing plate 11 and the bellows 13 are attached is the same.
　ベローズ１３の直管部１３ａは、上側固定板１２および第２フランジ１５の内壁に沿って延びる。図２において、直管部１３ａは、第２フランジ１５の角部の一部と接触している。また、上側固定板１２、ベローズ１３および第２フランジ１５によって形成される空間には、第２Ｏリング１７が設けられ、上側固定板１２およびベローズ１３における気密状態が確保される。
　第１Ｏリング１６および第２Ｏリング１７は、弾性体を用いて形成される。 A straight tube portion 13 a of the bellows 13 extends along inner walls of the upper fixing plate 12 and the second flange 15 . In FIG. 2, the straight pipe portion 13a is in contact with part of the corner portion of the second flange 15. As shown in FIG. A second O-ring 17 is provided in the space formed by the upper fixing plate 12 , the bellows 13 and the second flange 15 to ensure airtightness between the upper fixing plate 12 and the bellows 13 .
The first O-ring 16 and the second O-ring 17 are formed using an elastic body.
　また、ベローズ１３の蛇腹部１３ｂにおいて、連結部１３ｃに連なる腹部１３ｆは、第２フランジ１５の壁面１５ａに当接している。この際、第２フランジ１５の連結部１３ｃと対向する角部は面取りされており、連結部１３ｃは、第２フランジ１５には接触しておらず、連結部１３ｃと第２フランジ１５との間には空間Ｓ2が形成される。 Further, in the bellows portion 13 b of the bellows 13 , a portion 13 f of the bellows portion 13 f connected to the connecting portion 13 c is in contact with the wall surface 15 a of the second flange 15 . At this time, the corners of the second flange 15 facing the connecting portion 13c are chamfered, the connecting portion 13c does not contact the second flange 15, and there is a gap between the connecting portion 13c and the second flange 15. A space S 2 is formed in .
　蛇腹部１３ｂの谷部１３ｄの外部側には、粘弾性リング２４が設けられる。この粘弾性リング２４の弾性力によって、谷部１３ｄの屈曲（潰れ）や、対向する腹部１３ｆ間の距離が制御される。粘弾性リング２４は、ベローズ１３の谷部１３ｄを長手方向と直交する方向には荷重を加えないようにしてもよいし、長手方向の距離が小さくなるように締め付ける荷重を加えるようにしてもよい。 A viscoelastic ring 24 is provided on the outer side of the valley portion 13d of the bellows portion 13b. The elastic force of the viscoelastic ring 24 controls the bending (crushing) of the valley portion 13d and the distance between the opposing abdomens 13f. The viscoelastic ring 24 may apply no load to the trough portion 13d of the bellows 13 in the direction orthogonal to the longitudinal direction, or may apply a tightening load so as to reduce the distance in the longitudinal direction. .
　ベローズ取付構造１では、空圧継手２３を介して内部空間Ｓ1の圧力を高めると、ベローズ１３の蛇腹部１３ｂが広がって長手方向に延び、下側固定板１１と上側固定板１２とが互いに離れる方向に移動する。ベローズ取付構造１は、この固定板の移動によって、例えば下側固定板１１と接触する対象に対して加える荷重を調整する空気ばねとして機能する。 In the bellows mounting structure 1, when the pressure in the internal space S1 is increased via the pneumatic joint 23, the bellows portion 13b of the bellows 13 expands and extends in the longitudinal direction, and the lower fixing plate 11 and the upper fixing plate 12 are brought into contact with each other. Move away. The bellows mounting structure 1 functions, for example, as an air spring that adjusts the load applied to the object in contact with the lower fixing plate 11 by moving the fixing plate.
　本実施の形態１では、ベローズ取付構造１では、腹部１３ｆがフランジ（第１フランジ１４および第２フランジ１５）に接触し、連結部１３ｃとフランジとの間に空間（例えば空間Ｓ2）が形成され、谷部１３ｄに粘弾性リング２４が設けられることによって、蛇腹部１３ｂの伸長等によって作用する応力が腹部１３ｆに分散し、ベローズ１３の損傷が抑制される。また、ベローズ取付構造１は、谷部１３ｄに粘弾性リング２４を配設し、蛇腹部１３ｂの腹部１３ｆをフランジに当接させ、連結部１３ｃとフランジの角部とが接触しないように空間（空間Ｓ2）を形成させるのみで上述した効果を得ることができる。本実施の形態１によれば、簡易な構成でベローズに加わる応力を低減することができる。 In Embodiment 1, in the bellows mounting structure 1, the abdomen 13f contacts the flanges (the first flange 14 and the second flange 15), and a space (for example, space S 2 ) is formed between the connecting portion 13c and the flanges. By providing the viscoelastic ring 24 in the valley portion 13d, the stress acting due to elongation of the bellows portion 13b is distributed to the abdomen portion 13f, and damage to the bellows 13 is suppressed. In addition, the bellows mounting structure 1 has a viscoelastic ring 24 disposed in the valley portion 13d, the abdomen 13f of the bellows portion 13b is brought into contact with the flange, and a space ( The above effects can be obtained only by forming the space S 2 ). According to Embodiment 1, the stress applied to the bellows can be reduced with a simple configuration.
（実施の形態２）
　次に、本発明の実施の形態２について、図３を参照して説明する。図３は、実施の形態２にかかるベローズ取付構造を示す図である。なお、実施の形態１にかかるベローズ取付構造１と同じ部分には同じ符号が付してある。実施の形態２にかかるベローズ取付構造は、第２フランジ１５に代えて第２フランジ１５Ａを備え、第２粘弾性リング２５をさらに備える。なお、実施の形態２では、粘弾性リング２４は、第１粘弾性リングに相当する。 (Embodiment 2)
Next, Embodiment 2 of the present invention will be described with reference to FIG. FIG. 3 is a diagram showing a bellows mounting structure according to the second embodiment. In addition, the same code|symbol is attached|subjected to the same part as the bellows mounting structure 1 concerning Embodiment 1. As shown in FIG. The bellows mounting structure according to the second embodiment includes a second flange 15A instead of the second flange 15, and further includes a second viscoelastic ring 25. FIG. In addition, in Embodiment 2, the viscoelastic ring 24 corresponds to the first viscoelastic ring.
　第２フランジ１５Ａは、蛇腹部１３ｂに対向する壁面１５ｂのうち、連結部１３ｃと対向する部分に傾斜面１５ｃを有する。ベローズ１３と傾斜面１５ｃとによって形成される空間Ｓ3には、第２粘弾性リング２５が設けられる。
　なお、第１フランジ側も同様に粘弾性リングが設けられる。 The second flange 15A has an inclined surface 15c at a portion of the wall surface 15b facing the bellows portion 13b, which faces the connecting portion 13c. A second viscoelastic ring 25 is provided in the space S3 formed by the bellows 13 and the inclined surface 15c.
A viscoelastic ring is similarly provided on the first flange side.
　実施の形態２にかかるベローズ取付構造では、ベローズ取付構造１と同様に、空圧継手２３を介して内部空間Ｓ1の圧力を高めると、ベローズ１３の蛇腹部１３ｂが広がって下側固定板１１と上側固定板１２とが離れる方向に移動する。この際、谷部１３ｄに粘弾性リング２４が設けられ、連結部１３ｃとフランジとの間に第２粘弾性リング２５が介在することによって、蛇腹部１３ｂの伸長等によって作用する応力が分散し、ベローズ１３の損傷が抑制される。また、実施の形態２にかかるベローズ取付構造は、谷部１３ｄに粘弾性リング２４を配設し、連結部１３ｃとフランジの間に第２粘弾性リング２５を介在させるのみで上述した効果を得ることができる。本実施の形態２によれば、簡易な構成でベローズに加わる応力を低減することができる。 In the bellows mounting structure according to the second embodiment, similarly to the bellows mounting structure 1, when the pressure in the internal space S1 is increased via the pneumatic joint 23, the bellows portion 13b of the bellows 13 expands and the lower fixing plate 11 and the upper fixed plate 12 move away from each other. At this time, a viscoelastic ring 24 is provided in the valley portion 13d, and a second viscoelastic ring 25 is interposed between the connecting portion 13c and the flange. Damage to the bellows 13 is suppressed. Further, the bellows mounting structure according to the second embodiment obtains the above-described effects only by arranging the viscoelastic ring 24 in the valley portion 13d and interposing the second viscoelastic ring 25 between the connecting portion 13c and the flange. be able to. According to the second embodiment, the stress applied to the bellows can be reduced with a simple configuration.
　なお、実施の形態２において、ベローズ１３の腹部１３ｆは、図３に示すように、山部１３ｅと同じ態様で湾曲している例について説明したが、これに限らず、例えば直線状に延びるものであってもよいし、谷部１３ｄと同じ湾曲態様で湾曲してなるものであってもよい。この際、腹部１３ｆが、山部１３ｅと同じ湾曲態様で湾曲していれば、腹部１３ｆ間で粘弾性リング２４を挟み込むことによって、該粘弾性リング２４の抜け止め効果が得られるため好ましい。 In the second embodiment, the abdominal portion 13f of the bellows 13 is curved in the same manner as the peak portion 13e as shown in FIG. , or may be curved in the same manner as the valley 13d. At this time, if the abdomen 13f is curved in the same manner as the peaks 13e, it is preferable because the viscoelastic ring 24 can be prevented from slipping off by sandwiching the viscoelastic ring 24 between the abdomens 13f.
（実施の形態３）
　次に、本発明の実施の形態３について、図４を参照して説明する。図４は、実施の形態３にかかるベローズ取付構造を示す図である。なお、実施の形態１にかかるベローズ取付構造１と同じ部分には同じ符号が付してある。実施の形態３にかかるベローズ取付構造は、第２フランジ１５に代えて第２フランジ１５Ｂを備え、第２粘弾性リング２６をさらに備える。 (Embodiment 3)
Next, Embodiment 3 of the present invention will be described with reference to FIG. FIG. 4 is a diagram showing a bellows mounting structure according to the third embodiment. In addition, the same code|symbol is attached|subjected to the same part as the bellows mounting structure 1 concerning Embodiment 1. As shown in FIG. The bellows mounting structure according to the third embodiment includes a second flange 15B instead of the second flange 15, and further includes a second viscoelastic ring 26. FIG.
　第２フランジ１５Ｂは、蛇腹部１３ｂに対向する壁面１５ｄのうち、連結部１３ｃと対向する部分に傾斜面１５ｅを有する。ベローズ１３と傾斜面１５ｅとによって形成される空間Ｓ4には、第２粘弾性リング２６が設けられる。
　また、連結部１３ｃに連なる腹部１３ｆは、第２フランジ１５の壁面１５ｄに当接している。
　なお、第１フランジ側も同様に粘弾性リングが設けられる。 The second flange 15B has an inclined surface 15e at a portion of the wall surface 15d facing the bellows portion 13b facing the connecting portion 13c. A second viscoelastic ring 26 is provided in the space S4 formed by the bellows 13 and the inclined surface 15e.
Further, the abdomen 13f connected to the connecting portion 13c is in contact with the wall surface 15d of the second flange 15. As shown in FIG.
A viscoelastic ring is similarly provided on the first flange side.
　実施の形態３にかかるベローズ取付構造では、ベローズ取付構造１と同様に、空圧継手２３を介して内部空間Ｓ1の圧力を高めると、ベローズ１３の蛇腹部１３ｂが広がって下側固定板１１と上側固定板１２とが離れる方向に移動する。この際、谷部１３ｄに粘弾性リング２４が設けられ、腹部１３ｆがフランジに接触し、かつ連結部１３ｃとフランジとの間に第２粘弾性リング２６が介在することによって、蛇腹部１３ｂの伸長等によって作用する応力が分散し、ベローズ１３の損傷が抑制される。また、実施の形態３にかかるベローズ取付構造は、蛇腹部１３ｂの腹部１３ｆをフランジに当接させ、谷部１３ｄに粘弾性リング２４（第１粘弾性リング）を配設するとともに、連結部１３ｃとフランジの間に第２粘弾性リング２６を介在させるのみで上述した効果を得ることができる。本実施の形態３によれば、簡易な構成でベローズに加わる応力を低減することができる。 In the bellows mounting structure according to the third embodiment, similarly to the bellows mounting structure 1, when the pressure in the internal space S1 is increased via the pneumatic joint 23, the bellows portion 13b of the bellows 13 expands and the lower fixing plate 11 and the upper fixed plate 12 move away from each other. At this time, a viscoelastic ring 24 is provided in the valley portion 13d, the abdomen 13f contacts the flange, and a second viscoelastic ring 26 is interposed between the connecting portion 13c and the flange, thereby extending the bellows portion 13b. The stress that acts on the bellows 13 is dispersed, and damage to the bellows 13 is suppressed. Further, the bellows mounting structure according to the third embodiment has the abdomen 13f of the bellows portion 13b in contact with the flange, the viscoelastic ring 24 (first viscoelastic ring) is disposed in the valley portion 13d, and the connecting portion 13c The effect described above can be obtained only by interposing the second viscoelastic ring 26 between the flange. According to the third embodiment, the stress applied to the bellows can be reduced with a simple configuration.
（実施の形態４）
　次に、本発明の実施の形態４について、図５および図６を参照して説明する。図５は、実施の形態４にかかるベローズ取付構造を示す図である。なお、実施の形態１にかかるベローズ取付構造１と同じ部分には同じ符号が付してある。実施の形態４にかかるベローズ取付構造は、実施の形態１と同じ構成要素を備え、実施の形態１にかかる蛇腹部１３ｂとはその当接態様が異なる。 (Embodiment 4)
Next, Embodiment 4 of the present invention will be described with reference to FIGS. 5 and 6. FIG. FIG. 5 is a diagram showing a bellows mounting structure according to the fourth embodiment. In addition, the same code|symbol is attached|subjected to the same part as the bellows mounting structure 1 concerning Embodiment 1. As shown in FIG. The bellows mounting structure according to the fourth embodiment has the same constituent elements as those of the first embodiment, but differs from the bellows portion 13b according to the first embodiment in its contact manner.
　実施の形態４において、内部空間Ｓ1の圧力に応じて、同一の谷部１３ｄからそれぞれ延びる腹部１３ｆ同士が互いに当接するとともに、連結部１３ｃに連なる腹部１３ｆが第２フランジ１５の壁面１５ａに当接する。なお、内部空間Ｓ1の圧力が減圧されると、腹部１３ｆ同士が離間した状態となり得る。また、連結部１３ｃは、第２フランジ１５には接触しておらず、連結部１３ｃと第２フランジ１５との間には空間Ｓ2が形成される。 In the fourth embodiment, according to the pressure in the internal space S 1 , the abdominal portions 13 f extending from the same valley portion 13 d contact each other, and the abdominal portions 13 f connected to the connecting portion 13 c contact the wall surface 15 a of the second flange 15 . touch. Note that when the pressure in the internal space S1 is reduced, the abdomens 13f may be separated from each other. Also, the connecting portion 13 c does not contact the second flange 15 , and a space S 2 is formed between the connecting portion 13 c and the second flange 15 .
　蛇腹部１３ｂの谷部１３ｄの外部側には、粘弾性リング２４が設けられる。この粘弾性リング２４の弾性力によって、谷部１３ｄの屈曲（潰れ）等が制御される。 A viscoelastic ring 24 is provided on the outer side of the valley portion 13d of the bellows portion 13b. The elastic force of the viscoelastic ring 24 controls bending (crushing) of the valley portion 13d.
　実施の形態４にかかるベローズ取付構造では、ベローズ取付構造１と同様に、空圧継手２３を介して内部空間Ｓ1の圧力を高めると、ベローズ１３の蛇腹部１３ｂが広がって下側固定板１１と上側固定板１２とが離れる方向に移動する。この際、谷部１３ｄに粘弾性リング２４が設けられ、最も直管部１３ａ側に位置する腹部１３ｆがフランジに接触するとともに、他の隣り合う腹部１３ｆ同士が接触することによって、蛇腹部１３ｂの伸長等によって作用する応力が分散し、ベローズ１３の損傷が抑制される。また、実施の形態４にかかるベローズ取付構造は、谷部１３ｄに粘弾性リング２４を配設し、蛇腹部１３ｂの腹部１３ｆをフランジに当接させ、他の腹部１３ｆ同士を接触のみで上述した効果を得ることができる。本実施の形態４によれば、簡易な構成でベローズに加わる応力を低減することができる。 In the bellows mounting structure according to the fourth embodiment, similarly to the bellows mounting structure 1, when the pressure in the internal space S1 is increased via the pneumatic joint 23, the bellows portion 13b of the bellows 13 expands and the lower fixing plate 11 and the upper fixed plate 12 move away from each other. At this time, a viscoelastic ring 24 is provided in the valley portion 13d, and the abdominal portion 13f positioned closest to the straight pipe portion 13a contacts the flange, and the other adjacent abdominal portions 13f contact each other, whereby the bellows portion 13b is deformed. The stress acting due to elongation or the like is dispersed, and damage to the bellows 13 is suppressed. In addition, the bellows mounting structure according to the fourth embodiment has the viscoelastic ring 24 disposed in the valley portion 13d, the abdomen 13f of the bellows portion 13b is brought into contact with the flange, and the other abdomens 13f are only in contact with each other. effect can be obtained. According to the fourth embodiment, the stress applied to the bellows can be reduced with a simple configuration.
　また、実施の形態４では、腹部１３ｆ同士を接触させることによって圧縮方向の許容ストロークが増大するため、ベローズ１３の取付長（筒の中心軸方向の長さ）を短くすることができる。 In addition, in Embodiment 4, since the permissible stroke in the compression direction is increased by bringing the abdomens 13f into contact with each other, the mounting length of the bellows 13 (the length in the central axis direction of the cylinder) can be shortened.
　図６は、実施の形態４にかかるベローズ取付構造における荷重－撓みの計測結果の一例を示す図である。図６では、ベローズ１３の撓みが０．５ｍｍとなった状態において腹部１３ｆ同士が接触し始め、撓みの増加とともに荷重が非線形的に増加することが示されている。これは、ベローズ１３の圧縮方向の撓みの増加とともに、腹部１３ｆ同士の接触面積が増加し、発生荷重が非線形的に増加することによる。この荷重曲線の非線形性は、ベローズ１３における応力の分散を示し、ベローズ１３に加わる応力が低減されているといえる。この非線形性によって、耐久性を一層向上することができるとともに、上述した取付長の短小化と合わせて小型軽量化を実現することができる。 FIG. 6 is a diagram showing an example of the load-deflection measurement results in the bellows mounting structure according to the fourth embodiment. FIG. 6 shows that when the deflection of the bellows 13 reaches 0.5 mm, the abdomens 13f begin to come into contact with each other, and the load increases non-linearly as the deflection increases. This is because as the bending of the bellows 13 in the direction of compression increases, the contact area between the abdomens 13f increases, and the generated load increases non-linearly. The nonlinearity of the load curve indicates the distribution of stress in the bellows 13, and it can be said that the stress applied to the bellows 13 is reduced. Due to this non-linearity, the durability can be further improved, and together with the above-described shortening of the attachment length, the size and weight can be reduced.
　ここまで、本発明を実施するための形態を説明してきたが、本発明は上述した実施の形態によってのみ限定されるべきものではない。また、ベローズ１３は、摩擦の軽減等のために、コーティング処理や研磨処理等の表面加工を施してもよい。また、粘弾性リングやＯリングは、図示した断面形状に限らず、設計を変更することが可能である。 Although the embodiments for carrying out the present invention have been described so far, the present invention should not be limited only to the above-described embodiments. In addition, the bellows 13 may be subjected to surface processing such as coating or polishing in order to reduce friction or the like. Moreover, the viscoelastic ring and the O-ring are not limited to the illustrated cross-sectional shape, and the design can be changed.
　なお、実施の形態２、３の構成において、実施の形態４のように、腹部１３ｆ同士を接触させた構成とすることが可能である。 It should be noted that, in the configurations of Embodiments 2 and 3, it is possible to adopt a configuration in which abdomens 13f are in contact with each other as in Embodiment 4.
　このように、本発明はここでは記載していない様々な実施の形態等を含みうるものであり、請求の範囲により特定される技術的思想を逸脱しない範囲内において種々の設計変更等を施すことが可能である。 Thus, the present invention can include various embodiments and the like not described here, and various design changes and the like can be made without departing from the technical idea specified by the scope of the claims. is possible.
　以上説明したように、本発明に係るベローズの取付構造は、簡易な構成でベローズに加わる応力を低減するのに好適である。 As described above, the bellows mounting structure according to the present invention is suitable for reducing the stress applied to the bellows with a simple configuration.
　１　ベローズ取付構造
　１１　下側固定板
　１２　上側固定板
　１３　ベローズ
　１３ａ　直管部
　１３ｂ　蛇腹部
　１３ｃ　連結部
　１３ｄ　谷部
　１３ｅ　山部
　１３ｆ　腹部
　１４　第１フランジ
　１５、１５Ａ、１５Ｂ　第２フランジ
　１６　第１Ｏリング
　１７　第２Ｏリング
　１８　内筒ガイド
　１９　ボルト
　２０　平座金
　２１　ばね座金
　２２　ガイドベローズ
　２３　空圧継手
　２４　粘弾性リング
　２５、２６　第２粘弾性リング Reference Signs List 1 bellows mounting structure 11 lower fixing plate 12 upper fixing plate 13 bellows 13a straight pipe portion 13b bellows portion 13c connecting portion 13d valley portion 13e peak portion 13f belly portion 14 first flange 15, 15A, 15B second flange 16 first O-ring 17 Second O-ring 18 Inner cylinder guide 19 Bolt 20 Plain washer 21 Spring washer 22 Guide bellows 23 Pneumatic joint 24 Viscoelastic ring 25, 26 Second viscoelastic ring

Claims (5)

  1. 　筒状のベローズを固定部材に取り付けたベローズの取付構造であって、
    　前記ベローズは、
    　両端部に設けられる直管部と、
    　前記直管部の間に設けられ、凹凸形状を繰り返してなる蛇腹部と、
    　前記直管部および前記蛇腹部に連なる連結部と、
    　を備え、
    　前記蛇腹部は、
    　屈曲してなる谷部と、
    　前記谷部とは逆の態様で屈曲してなる山部と、
    　前記山部から該山部と同じ態様でそれぞれ屈曲して延びる腹部と、
    　からなる一組の突起形状を繰り返してなり、
    　複数の前記腹部のうち、前記連結部に連なる腹部は、前記固定部材に当接し、
    　前記固定部材と前記連結部との間には、空間が形成され、
    　前記谷部には、粘弾性リングが設けられる、
    　ことを特徴とするベローズの取付構造。     A bellows mounting structure in which a cylindrical bellows is mounted to a fixing member,
    The bellows are
    straight pipe portions provided at both ends;
    a bellows portion provided between the straight pipe portions and formed by repeating uneven shapes;
    a connecting portion connected to the straight pipe portion and the bellows portion;
    with
    The bellows portion is
    a curved valley,
    A mountain portion bent in a manner opposite to the valley portion;
    an abdomen extending from the ridge in the same manner as the ridge, and
    A set of protrusion shapes consisting of
    Among the plurality of abdomens, an abdomen connected to the connecting portion abuts on the fixing member,
    A space is formed between the fixing member and the connecting portion,
    the valley is provided with a viscoelastic ring;
    A bellows mounting structure characterized by:
  2. 　前記固定部材と前記連結部との間には、粘弾性リングが設けられる、
    　ことを特徴とする請求項１に記載のベローズの取付構造。     A viscoelastic ring is provided between the fixing member and the connecting portion.
    The bellows mounting structure according to claim 1, characterized in that:
  3. 　筒状のベローズを固定部材に取り付けたベローズの取付構造であって、
    　前記ベローズは、
    　両端部に設けられる直管部と、
    　前記直管部の間に設けられ、凹凸形状を繰り返してなる蛇腹部と、
    　前記直管部および前記蛇腹部に連なる連結部と、
    　を備え、
    　前記蛇腹部は、
    　屈曲してなる谷部と、
    　前記谷部とは逆の態様で屈曲してなる山部と、
    　前記谷部および前記山部の間に設けられる腹部と、
    　からなる一組の突起形状を繰り返してなり、
    　前記谷部には、第１粘弾性リングが設けられ、
    　前記固定部材と前記連結部との間には、第２粘弾性リングが設けられる、
    　ことを特徴とするベローズの取付構造。     A bellows mounting structure in which a cylindrical bellows is mounted to a fixing member,
    The bellows are
    straight pipe portions provided at both ends;
    a bellows portion provided between the straight pipe portions and formed by repeating uneven shapes;
    a connecting portion connected to the straight pipe portion and the bellows portion;
    with
    The bellows portion is
    a curved valley,
    A mountain portion bent in a manner opposite to the valley portion;
    an abdomen provided between the valley portion and the peak portion;
    A set of protrusion shapes consisting of
    A first viscoelastic ring is provided in the valley,
    A second viscoelastic ring is provided between the fixing member and the connecting portion.
    A bellows mounting structure characterized by:
  4. 　前記腹部は、前記山部と同じ態様で屈曲して延びる、
    　ことを特徴とする請求項３に記載のベローズの取付構造。     The abdomen extends and bends in the same manner as the peaks,
    The bellows mounting structure according to claim 3, characterized in that:
  5. 　同一の前記谷部から延びる一対の前記腹部同士が接触する、
    　ことを特徴とする請求項１～３のいずれか一つに記載のベローズの取付構造。     A pair of said abdomens extending from the same valley contact each other,
    The bellows mounting structure according to any one of claims 1 to 3, characterized in that:
PCT/JP2022/047203 2021-12-22 2022-12-21 Bellows mounting structure WO2023120601A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841949U (en) * 1971-09-23 1973-05-29
JP2010281443A (en) * 2009-05-01 2010-12-16 Nok Corp Metal bellows
JP2011179578A (en) * 2010-02-27 2011-09-15 Yokohama National Univ Pressure resistant metal bellows and method for manufacturing the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4841949B2 (en) 2005-12-21 2011-12-21 オリジン電気株式会社 Vacuum device and power supply method for vacuum device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841949U (en) * 1971-09-23 1973-05-29
JP2010281443A (en) * 2009-05-01 2010-12-16 Nok Corp Metal bellows
JP2011179578A (en) * 2010-02-27 2011-09-15 Yokohama National Univ Pressure resistant metal bellows and method for manufacturing the same

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