WO2009116155A1 - Damper - Google Patents

Damper Download PDF

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Publication number
WO2009116155A1
WO2009116155A1 PCT/JP2008/055137 JP2008055137W WO2009116155A1 WO 2009116155 A1 WO2009116155 A1 WO 2009116155A1 JP 2008055137 W JP2008055137 W JP 2008055137W WO 2009116155 A1 WO2009116155 A1 WO 2009116155A1
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WO
WIPO (PCT)
Prior art keywords
rod
cylinder
damper
dust boot
closing member
Prior art date
Application number
PCT/JP2008/055137
Other languages
French (fr)
Japanese (ja)
Inventor
俊哉 網倉
Original Assignee
カヤバ工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by カヤバ工業株式会社 filed Critical カヤバ工業株式会社
Priority to KR1020107020710A priority Critical patent/KR20100119569A/en
Priority to JP2010503708A priority patent/JPWO2009116155A1/en
Priority to CN2008801223669A priority patent/CN101910673A/en
Priority to PCT/JP2008/055137 priority patent/WO2009116155A1/en
Priority to TW097118643A priority patent/TW200940848A/en
Publication of WO2009116155A1 publication Critical patent/WO2009116155A1/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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/38—Covers for protection or appearance

Definitions

  • the present invention relates to a damper, and more particularly to a damper having dust boots.
  • Some dampers have a dust boot that covers the protruding portion of the piston rod from the cylinder in order to prevent dust from adhering to the piston rod.
  • Patent Document 1 discloses a cylinder device having a dust boot fixed to a cap welded to one end side of an outer cylinder.
  • the dust boot is fixed to the outer periphery of the cap by a fastening band.
  • the cap axial dimension is large, the rod stroke will be reduced accordingly. Further, when trying to secure the stroke of the rod, the damper becomes longer and the weight increases.
  • the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a damper capable of ensuring the rod stroke without lengthening the damper.
  • the present invention relates to a cylinder in which a working fluid is sealed, a piston that moves within the cylinder at one end, a rod that protrudes from the cylinder at the other end, and a closing member that closes an opening on the rod side of the cylinder. And a dust boot that is attached to the closing member and covers a protruding portion from the cylinder in the rod, a groove portion is formed on an end surface of the closing member, and one end of the dust boot has the groove portion It is attached to the closing member by being inserted into and fixed to.
  • the dust boot is attached to the closing member by fixing one end of the dust boot to the groove formed in the closing member that closes the cylinder, a portion for attaching the dust boot to the closing member is extended. There is no need to do. Therefore, the stroke of the rod can be ensured without lengthening the damper.
  • damper 1 according to the embodiment of the present invention will be described with reference to FIG. 1 and FIG.
  • the damper 1 generates a damping force by expanding and contracting, and in the present embodiment, the damper 1 is interposed horizontally between the vehicle bodies so as to attenuate relative shaking between the vehicle bodies of the railway vehicle.
  • the damper 1 includes an outer tube 2, an inner tube 3 coaxially accommodated in the outer tube 2, a piston 4 that moves slidably along the inner periphery of the inner tube 3, and a piston 4 coupled to one end.
  • the other end includes a rod 5 that protrudes outward from the outer tube 2 in the axial direction.
  • the damper 1 of the present embodiment is a double tube type damper.
  • two oil chambers (fluid chambers) 6 and 7 are defined by the piston 4.
  • the oil chamber 6 on the rod 5 side communicates with a reservoir chamber 9 formed between the inner tube 3 and the outer tube 2 via a check valve 8.
  • the check valve 8 allows only the flow of working oil (working fluid) from the reservoir chamber 9 to the oil chamber 6.
  • the oil chamber 7 on the side opposite to the rod communicates with the reservoir chamber 9 via the pressure side damping valve 10.
  • the piston 4 is also provided with an expansion side damping valve and a pressure side damping valve.
  • the outer tube 2 and the inner tube 3 constitute the cylinder 11, and hydraulic oil is sealed in the cylinder 11.
  • the outer tube 2 is a bottomed cylindrical member, and an attachment ring 13 for attaching the damper 1 to the vehicle body is fixed to the bottom of the outer tube 2.
  • An attachment ring 14 for attaching the damper 1 to the vehicle body is also fixed to the protruding end of the rod 5.
  • the damper 1 is interposed between the vehicle bodies via the attachment rings 13 and 14 provided at both ends.
  • the cover 12 which covers the protrusion part 5a from the outer tube 2 in the rod 5 is fixed to the mounting ring 14.
  • the cover 12 has an inner diameter slightly larger than the outer diameter of the outer tube 2 and overlaps a part of the outer periphery of the outer tube 2 as shown in the figure.
  • the damper 1 Since the damper 1 is interposed between the vehicle bodies via the attachment rings 13 and 14 provided at both ends, the damper 1 is expanded and contracted by relative shaking between the vehicle bodies. Attenuating force is generated as the rod 5 moves back and forth in the inner tube 3 along with the expansion and contraction.
  • the outer periphery is supported by a stepped portion 2 a formed on the inner periphery of the outer tube 2, and the rod 5 through which the shaft core is inserted is slidably supported.
  • a rod guide 20 is provided inside the opening on the rod 5 side of the outer tube 2, the outer periphery is supported by a stepped portion 2 a formed on the inner periphery of the outer tube 2, and the rod 5 through which the shaft core is inserted is slidably supported.
  • a rod guide 20 is provided.
  • the rod guide 20 is formed with a hole 20a having a circular opening, and the end of the inner tube 3 is inserted into the inner peripheral surface of the hole 20a. As described above, the rod guide 20 closes the opening on the rod 5 side of the outer tube 2 and the inner tube 3 to partition the oil chamber 6 and the reservoir chamber 9.
  • a small diameter portion 20 b is formed on the back surface of the rod guide 20 that does not face the oil chamber 6 and the reservoir chamber 9.
  • a seal member 21 for sealing between the outer peripheral surface of the rod 5 and the inner peripheral surface of the rod guide 20 is disposed on the inner periphery of the small diameter portion 20b. The seal member 21 prevents leakage of hydraulic oil to the outside.
  • a cap member 22 whose outer periphery is screwed into the inner periphery of the outer tube 2 is assembled inside the opening end of the outer tube 2 on the rod 5 side.
  • the cap member 22 prevents the rod guide 20 from coming off from the outer tube 2.
  • the rod 5 is slidably inserted through the axis of the cap member 22.
  • the cap member 22 is formed with a fitting hole 22a into which the small diameter portion 20b of the rod guide 20 is fitted, and the rod guide 20 and the cap member 22 are integrally formed by fitting the small diameter portion 20b and the fitting hole 22a. Become.
  • the rod guide 20 and the cap member 22 constitute a closing member that closes the opening of the cylinder 11 on the rod 5 side.
  • the rod guide 20 and the cap member 22 may be configured as an integral member.
  • the dust boot 23 which covers the protrusion part 5a from the outer tube 2 in the rod 5 is attached to the cap member 22.
  • the dust boot 23 is a substantially conical cylindrical bellows-like member and is made of resin.
  • the dust boot 23 is formed to have a length that covers a part of the protruding portion 5 a of the rod 5, specifically, a length that is greater than the normal amplitude of the rod 5.
  • a lip portion 23 a having an inner diameter that is substantially the same as the outer diameter of the rod 5 is formed at the tip of the dust boot 23 on the small diameter side.
  • the lip 23 a is in sliding contact with the outer peripheral surface of the rod 5 and prevents dust from entering the dust boot 23.
  • An annular ring portion 23b is formed at the proximal end portion of the dust boot 23 on the large diameter side.
  • the dust boot 23 is fixed to the cap member 22 via the ring portion 23b.
  • a groove 24 that is recessed in a concave shape is formed on the end surface 22 b of the cap member 22, that is, the surface facing the dust boot 23.
  • the groove portion 24 is formed as an annular groove having the rod 5 as a central axis, and the depth thereof is substantially the same as the axial dimension of the ring portion 23 b of the dust boot 23.
  • the dust boot 23 is attached to the cap member 22 by the ring portion 23b being inserted into the groove portion 24 and fixed. Specifically, the ring portion 23 b is attached by being attached to the inner peripheral surface 24 a of the groove portion 24. Thus, the dust boot 23 is attached to the inside of the cap member 22.
  • annular mounting groove 24b in which the ring portion 23b is mounted on the inner peripheral surface 24a of the groove portion 24.
  • the dust boot 23 is firmly fixed to the cap member 22 by mounting the ring portion 23 b in the mounting groove 24 b of the inner peripheral surface 24 a of the groove portion 24.
  • the groove portion 24 is not limited to the annular groove, and may be constituted by a plurality of arc grooves on the same circumference.
  • the ring portion 23b is not formed in an annular shape but is formed in a shape corresponding to the groove portion 24.
  • the dust boot 23 is attached to the cap member 22 by fixing the ring portion 23 b to the groove portion 24 formed on the end surface 22 b of the cap member 22 that closes the cylinder 11.
  • the horizontal damper interposed horizontally between the bodies of the railway vehicle has been described.
  • the present invention can also be applied to a damper interposed in other equipment.
  • the damper 1 is described as a double tube type, but the present invention can also be applied to a single tube type damper.
  • the damper according to the present invention can be applied to a horizontal damper that is horizontally interposed between the vehicle bodies so as to attenuate relative fluctuations between the vehicle bodies of the railway vehicle.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

A damper comprising a cylinder (11) having a working fluid sealed therein; a rod (5) having a piston (4) moving in the cylinder (11) bonded to its one end and having the other end protruding from the cylinder (11); a closing member (22) for closing the opening of the cylinder (11) on the side of the rod (5); and a dust boot (23) fitted to the closing member (22) so as to cover the protruding portion (5a) of the rod (5) from the cylinder (11). The closing member (22) at its end face (22b) is provided with a groove portion (24). The dust boot (23) is fitted to the closing member (22) by insertion and fixing of one end thereof in the groove portion (24).

Description

ダンパdamper
　本発明は、ダンパに関するものであり、特には、ダストブーツを有するダンパに関するものである。 The present invention relates to a damper, and more particularly to a damper having dust boots.
　ダンパにおいて、ピストンロッドへのダストの付着を防止することを目的として、ピストンロッドにおけるシリンダからの突出部を覆うダストブーツを有するものがある。 Some dampers have a dust boot that covers the protruding portion of the piston rod from the cylinder in order to prevent dust from adhering to the piston rod.
　特許文献１には、外筒の一端側に溶接されたキャップに固定されたダストブーツを有するシリンダ装置が開示されている。このダストブーツは、キャップの外周に締結バンドによって固定される。
特開２０００－２５７６０６号公報 Patent Document 1 discloses a cylinder device having a dust boot fixed to a cap welded to one end side of an outer cylinder. The dust boot is fixed to the outer periphery of the cap by a fastening band.
JP 2000-257606 A
　特許文献１のようなキャップの外周にダストブーツを固定するダンパの場合、ダストブーツを固定するための部位をロッド軸方向に延設する必要があり、キャップのロッド軸方向の寸法が大きくなってしまう。 In the case of the damper that fixes the dust boot to the outer periphery of the cap as in Patent Document 1, it is necessary to extend the portion for fixing the dust boot in the rod axis direction, which increases the size of the cap in the rod axis direction. End up.
　キャップのロッド軸方向の寸法が大きい場合には、その分ロッドのストロークが小さくなってしまう。また、ロッドのストロークを確保しようとすると、ダンパが長くなり重量が増えてしまう。 If the cap axial dimension is large, the rod stroke will be reduced accordingly. Further, when trying to secure the stroke of the rod, the damper becomes longer and the weight increases.
　本発明は、上記の問題点に鑑みてなされたものであり、ダンパを長くすることなくロッドのストロークを確保することができるダンパを提供することを目的とする。 The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a damper capable of ensuring the rod stroke without lengthening the damper.
　本発明は、作動流体が封入されたシリンダと、一端に前記シリンダ内を移動するピストンが結合され、他端が前記シリンダから突出するロッドと、前記シリンダにおけるロッド側の開口部を閉塞する閉塞部材と、前記閉塞部材に取り付けられ、前記ロッドにおける前記シリンダからの突出部を覆うダストブーツと、を備えるダンパにおいて、前記閉塞部材の端面には溝部が形成され、前記ダストブーツは、一端が前記溝部に挿入されて固定されることによって前記閉塞部材に取り付けられることを特徴とする。 The present invention relates to a cylinder in which a working fluid is sealed, a piston that moves within the cylinder at one end, a rod that protrudes from the cylinder at the other end, and a closing member that closes an opening on the rod side of the cylinder. And a dust boot that is attached to the closing member and covers a protruding portion from the cylinder in the rod, a groove portion is formed on an end surface of the closing member, and one end of the dust boot has the groove portion It is attached to the closing member by being inserted into and fixed to.
　本発明によれば、ダストブーツは、その一端がシリンダを閉塞する閉塞部材に形成された溝部に固定されることによって閉塞部材に取り付けられるため、閉塞部材にダストブーツを取り付けるための部位を延設する必要がない。したがって、ダンパを長くすることなくロッドのストロークを確保することができる。 According to the present invention, since the dust boot is attached to the closing member by fixing one end of the dust boot to the groove formed in the closing member that closes the cylinder, a portion for attaching the dust boot to the closing member is extended. There is no need to do. Therefore, the stroke of the rod can be ensured without lengthening the damper.
本発明の実施の形態に係るダンパを示す断面図である。It is sectional drawing which shows the damper which concerns on embodiment of this invention. 本発明の実施の形態に係るダンパを示す拡大断面図である。It is an expanded sectional view showing a damper concerning an embodiment of the invention.
符号の説明Explanation of symbols
１　　　ダンパ
２　　　アウタチューブ
３　　　インナチューブ
４　　　ピストン
５　　　ロッド
５ａ　　突出部
６，７　油室
９　　　リザーバ室
１１　　シリンダ
１２　　カバー
１３　　取付リング
１４　　取付リング
２０　　ロッドガイド
２１　　シール部材
２２　　キャップ部材
２２ｂ　端面
２３　　ダストブーツ
２３ａ　リップ部
２３ｂ　リング部
２４　　溝部
２４ａ　内周面
２４ｂ　取付溝 DESCRIPTION OF SYMBOLS 1 Damper 2 Outer tube 3 Inner tube 4 Piston 5 Rod 5a Protrusion part 6,7 Oil chamber 9 Reservoir chamber 11 Cylinder 12 Cover 13 Mounting ring 14 Mounting ring 20 Rod guide 21 Seal member 22 Cap member 22b End surface 23 Dust boot 23a Lip part 23b Ring portion 24 Groove portion 24a Inner peripheral surface 24b Mounting groove
　以下、図面を参照して、本発明の実施の形態について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　図１及び図２を参照して、本発明の実施の形態に係るダンパ１について説明する。 The damper 1 according to the embodiment of the present invention will be described with reference to FIG. 1 and FIG.
　ダンパ１は、伸縮動作することによって減衰力を発生するものであって、本実施の形態では、鉄道車両の車体間の相対的な動揺を減衰すべく車体間に水平に介装される。 The damper 1 generates a damping force by expanding and contracting, and in the present embodiment, the damper 1 is interposed horizontally between the vehicle bodies so as to attenuate relative shaking between the vehicle bodies of the railway vehicle.
　ダンパ１は、アウタチューブ２と、アウタチューブ２に同軸的に収容されたインナチューブ３と、インナチューブ３の内周に沿って摺動自在に移動するピストン４と、一端にピストン４が結合され他端がアウタチューブ２から外側へ軸方向に突出するロッド５とを備える。このように、本実施の形態のダンパ１は、ダブルチューブ型のダンパである。 The damper 1 includes an outer tube 2, an inner tube 3 coaxially accommodated in the outer tube 2, a piston 4 that moves slidably along the inner periphery of the inner tube 3, and a piston 4 coupled to one end. The other end includes a rod 5 that protrudes outward from the outer tube 2 in the axial direction. Thus, the damper 1 of the present embodiment is a double tube type damper.
　インナチューブ３の内部には、ピストン４によって２つの油室（流体室）６，７が画成される。ロッド５側の油室６は、チェック弁８を介してインナチューブ３とアウタチューブ２の間に形成されたリザーバ室９に連通する。チェック弁８は、リザーバ室９から油室６への作動油（作動流体）の流れのみを許容するものである。反ロッド側の油室７は、圧側減衰弁１０を介してリザーバ室９に連通する。ピストン４にも伸側減衰弁と圧側減衰弁が設けられる。 In the inner tube 3, two oil chambers (fluid chambers) 6 and 7 are defined by the piston 4. The oil chamber 6 on the rod 5 side communicates with a reservoir chamber 9 formed between the inner tube 3 and the outer tube 2 via a check valve 8. The check valve 8 allows only the flow of working oil (working fluid) from the reservoir chamber 9 to the oil chamber 6. The oil chamber 7 on the side opposite to the rod communicates with the reservoir chamber 9 via the pressure side damping valve 10. The piston 4 is also provided with an expansion side damping valve and a pressure side damping valve.
　このように、アウタチューブ２とインナチューブ３によってシリンダ１１が構成され、シリンダ１１内には作動油が封入される。 Thus, the outer tube 2 and the inner tube 3 constitute the cylinder 11, and hydraulic oil is sealed in the cylinder 11.
　アウタチューブ２は有底筒状部材であり、その底部にはダンパ１を車体に取り付けるための取付リング１３が固定される。ロッド５の突出端にもダンパ１を車体に取り付けるための取付リング１４が固定される。このように、ダンパ１は、両端に設けられた取付リング１３，１４を介して車体間に介装される。 The outer tube 2 is a bottomed cylindrical member, and an attachment ring 13 for attaching the damper 1 to the vehicle body is fixed to the bottom of the outer tube 2. An attachment ring 14 for attaching the damper 1 to the vehicle body is also fixed to the protruding end of the rod 5. Thus, the damper 1 is interposed between the vehicle bodies via the attachment rings 13 and 14 provided at both ends.
　取付リング１４には、ロッド５におけるアウタチューブ２からの突出部５ａを覆うカバー１２が固定される。カバー１２は、アウタチューブ２の外径より僅かに大きな内径を有し、図示のようにアウタチューブ２の外周の一部とオーバラップする。 The cover 12 which covers the protrusion part 5a from the outer tube 2 in the rod 5 is fixed to the mounting ring 14. The cover 12 has an inner diameter slightly larger than the outer diameter of the outer tube 2 and overlaps a part of the outer periphery of the outer tube 2 as shown in the figure.
　ダンパ１は、両端に設けられた取付リング１３，１４を介して車体間に介装されるため、車体間の相対的な動揺によって伸縮動作する。その伸縮動作に伴ってロッド５がインナチューブ３内を進退することによって減衰力が発生する。 Since the damper 1 is interposed between the vehicle bodies via the attachment rings 13 and 14 provided at both ends, the damper 1 is expanded and contracted by relative shaking between the vehicle bodies. Attenuating force is generated as the rod 5 moves back and forth in the inner tube 3 along with the expansion and contraction.
　次に、主に図２を参照して、アウタチューブ２におけるロッド５側の開口部近傍について説明する。 Next, the vicinity of the opening on the rod 5 side in the outer tube 2 will be described mainly with reference to FIG.
　アウタチューブ２におけるロッド５側の開口部の内側には、外周がアウタチューブ２の内周に形成された段差部２ａに支持されると共に、軸芯を挿通するロッド５を摺動自在に支持するロッドガイド２０が設けられる。 Inside the opening on the rod 5 side of the outer tube 2, the outer periphery is supported by a stepped portion 2 a formed on the inner periphery of the outer tube 2, and the rod 5 through which the shaft core is inserted is slidably supported. A rod guide 20 is provided.
　ロッドガイド２０には円状に開口した穴２０ａが形成され、穴２０ａの内周面にはインナチューブ３の端部が挿入される。このように、ロッドガイド２０は、アウタチューブ２及びインナチューブ３のロッド５側の開口部を閉塞し、油室６とリザーバ室９を区画する。 The rod guide 20 is formed with a hole 20a having a circular opening, and the end of the inner tube 3 is inserted into the inner peripheral surface of the hole 20a. As described above, the rod guide 20 closes the opening on the rod 5 side of the outer tube 2 and the inner tube 3 to partition the oil chamber 6 and the reservoir chamber 9.
　ロッドガイド２０における油室６及びリザーバ室９に面しない背面には、小径部２０ｂが形成される。小径部２０ｂの内周には、ロッド５の外周面とロッドガイド２０の内周面との間をシールするためのシール部材２１が配置される。このシール部材２１によって作動油の外部への漏れが防止される。 A small diameter portion 20 b is formed on the back surface of the rod guide 20 that does not face the oil chamber 6 and the reservoir chamber 9. A seal member 21 for sealing between the outer peripheral surface of the rod 5 and the inner peripheral surface of the rod guide 20 is disposed on the inner periphery of the small diameter portion 20b. The seal member 21 prevents leakage of hydraulic oil to the outside.
　アウタチューブ２におけるロッド５側の開口端部の内側には、外周がアウタチューブ２の内周に螺合するキャップ部材２２が組み付けられる。このキャップ部材２２によってアウタチューブ２からのロッドガイド２０の抜けが防止される。ロッド５は、キャップ部材２２の軸芯を、摺動自在に挿通する。 A cap member 22 whose outer periphery is screwed into the inner periphery of the outer tube 2 is assembled inside the opening end of the outer tube 2 on the rod 5 side. The cap member 22 prevents the rod guide 20 from coming off from the outer tube 2. The rod 5 is slidably inserted through the axis of the cap member 22.
　キャップ部材２２には、ロッドガイド２０の小径部２０ｂが嵌合する嵌合穴２２ａが形成され、小径部２０ｂと嵌合穴２２ａが嵌合することによって、ロッドガイド２０とキャップ部材２２は一体となる。 The cap member 22 is formed with a fitting hole 22a into which the small diameter portion 20b of the rod guide 20 is fitted, and the rod guide 20 and the cap member 22 are integrally formed by fitting the small diameter portion 20b and the fitting hole 22a. Become.
　ロッドガイド２０とキャップ部材２２によって、シリンダ１１におけるロッド５側の開口部を閉塞する閉塞部材が構成される。なお、ロッドガイド２０とキャップ部材２２を一体の部材にて構成するようにしてもよい。 The rod guide 20 and the cap member 22 constitute a closing member that closes the opening of the cylinder 11 on the rod 5 side. The rod guide 20 and the cap member 22 may be configured as an integral member.
　キャップ部材２２には、ロッド５におけるアウタチューブ２からの突出部５ａを覆うダストブーツ２３が取り付けられる。 The dust boot 23 which covers the protrusion part 5a from the outer tube 2 in the rod 5 is attached to the cap member 22.
　ダストブーツ２３は、略円錐筒状の蛇腹状の部材であり樹脂製である。ダストブーツ２３は、ロッド５の突出部５ａの一部を覆う長さ、具体的にはロッド５の通常の振幅以上の長さに形成される。 The dust boot 23 is a substantially conical cylindrical bellows-like member and is made of resin. The dust boot 23 is formed to have a length that covers a part of the protruding portion 5 a of the rod 5, specifically, a length that is greater than the normal amplitude of the rod 5.
　ダストブーツ２３の小径側である先端部には、内径がロッド５の外径と略同一であるリップ部２３ａが形成される。リップ部２３ａは、ロッド５の外周面に摺接し、ダストブーツ２３内へのダストの侵入を防止する。 A lip portion 23 a having an inner diameter that is substantially the same as the outer diameter of the rod 5 is formed at the tip of the dust boot 23 on the small diameter side. The lip 23 a is in sliding contact with the outer peripheral surface of the rod 5 and prevents dust from entering the dust boot 23.
　ダストブーツ２３の大径側である基端部には、環状のリング部２３ｂが形成される。ダストブーツ２３は、リング部２３ｂを介してキャップ部材２２に固定される。 An annular ring portion 23b is formed at the proximal end portion of the dust boot 23 on the large diameter side. The dust boot 23 is fixed to the cap member 22 via the ring portion 23b.
　キャップ部材２２の端面２２ｂ、つまりダストブーツ２３に対峙する面には、凹状に窪んだ溝部２４が形成される。 A groove 24 that is recessed in a concave shape is formed on the end surface 22 b of the cap member 22, that is, the surface facing the dust boot 23.
　溝部２４は、ロッド５を中心軸とする環状溝として形成され、その深さはダストブーツ２３のリング部２３ｂの軸方向の寸法と略同一である。 The groove portion 24 is formed as an annular groove having the rod 5 as a central axis, and the depth thereof is substantially the same as the axial dimension of the ring portion 23 b of the dust boot 23.
　ダストブーツ２３は、リング部２３ｂが溝部２４に挿入されて固定されることによってキャップ部材２２に取り付けられる。具体的には、リング部２３ｂが溝部２４の内周面２４ａに装着されることによって取り付けられる。このように、ダストブーツ２３は、キャップ部材２２の内部に取り付けられる。 The dust boot 23 is attached to the cap member 22 by the ring portion 23b being inserted into the groove portion 24 and fixed. Specifically, the ring portion 23 b is attached by being attached to the inner peripheral surface 24 a of the groove portion 24. Thus, the dust boot 23 is attached to the inside of the cap member 22.
　なお、溝部２４の内周面２４ａに、リング部２３ｂが装着される環状の取付溝２４ｂを形成するが望ましい。このように、リング部２３ｂを溝部２４の内周面２４ａの取付溝２４ｂに装着することによって、ダストブーツ２３はキャップ部材２２に強固に固定される。 In addition, it is desirable to form an annular mounting groove 24b in which the ring portion 23b is mounted on the inner peripheral surface 24a of the groove portion 24. As described above, the dust boot 23 is firmly fixed to the cap member 22 by mounting the ring portion 23 b in the mounting groove 24 b of the inner peripheral surface 24 a of the groove portion 24.
　また、溝部２４は、環状溝に限るものではなく、同一円周上の複数の円弧溝によって構成するようにしてもよい。その場合、リング部２３ｂも環状形状ではなく、溝部２４に対応した形状に構成される。 Further, the groove portion 24 is not limited to the annular groove, and may be constituted by a plurality of arc grooves on the same circumference. In that case, the ring portion 23b is not formed in an annular shape but is formed in a shape corresponding to the groove portion 24.
　以上の本実施の形態によれば、以下に示す作用効果を奏する。 According to the above-described embodiment, the following effects are obtained.
　ダストブーツ２３は、リング部２３ｂがシリンダ１１を閉塞するキャップ部材２２の端面２２ｂに形成された溝部２４に固定されることによって、キャップ部材２２に取り付けられる。このように、キャップ部材２２には、ダストブーツ２３を取り付けるための部位として、端面２２ｂに軸方向に突出する部位を設ける必要がない。したがって、ダンパ１を長くすることなくロッド５のストロークを確保することができ、従来よりもダンパ１の長さを短く、かつダンパ１の重量を軽量にすることができる。 The dust boot 23 is attached to the cap member 22 by fixing the ring portion 23 b to the groove portion 24 formed on the end surface 22 b of the cap member 22 that closes the cylinder 11. Thus, it is not necessary to provide the cap member 22 with a portion protruding in the axial direction on the end face 22b as a portion for attaching the dust boot 23. Therefore, the stroke of the rod 5 can be ensured without making the damper 1 longer, the length of the damper 1 can be made shorter than before, and the weight of the damper 1 can be reduced.
　本発明は上記の実施の形態に限定されずに、その技術的な思想の範囲内において種々の変更がなしうることは明白である。 The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.
　例えば、上記の実施の形態では、鉄道車両の車体間に水平に介装される水平ダンパについて説明したが、本発明は、その他の機器に介装されるダンパにも適用することができる。 For example, in the above-described embodiment, the horizontal damper interposed horizontally between the bodies of the railway vehicle has been described. However, the present invention can also be applied to a damper interposed in other equipment.
　また、上記の実施の形態では、油圧ダンパについて説明したが、本発明は、ガスダンパにも適用することができる。 In the above embodiment, the hydraulic damper has been described, but the present invention can also be applied to a gas damper.
　また、上記の実施の形態では、ダンパ１はダブルチューブ型として説明したが、本発明は、シングルチューブ型のダンパにも適用することができる。 In the above embodiment, the damper 1 is described as a double tube type, but the present invention can also be applied to a single tube type damper.
　本発明に係るダンパは、鉄道車両の車体間の相対的な動揺を減衰すべく車体間に水平に介装される水平ダンパに適用することができる。 The damper according to the present invention can be applied to a horizontal damper that is horizontally interposed between the vehicle bodies so as to attenuate relative fluctuations between the vehicle bodies of the railway vehicle.

Claims (4)

  1. 　作動流体が封入されたシリンダと、
    　一端に前記シリンダ内を移動するピストンが結合され、他端が前記シリンダから突出するロッドと、
    　前記シリンダにおけるロッド側の開口部を閉塞する閉塞部材と、
    　前記閉塞部材に取り付けられ、前記ロッドにおける前記シリンダからの突出部を覆うダストブーツと、を備えるダンパにおいて、
    　前記閉塞部材の端面には溝部が形成され、
    　前記ダストブーツは、一端が前記溝部に挿入されて固定されることによって前記閉塞部材に取り付けられることを特徴とするダンパ。     A cylinder filled with a working fluid;
    A rod that moves in the cylinder at one end is coupled, and a rod that protrudes from the cylinder at the other end;
    A closing member for closing the rod side opening in the cylinder;
    In a damper comprising a dust boot attached to the closing member and covering a protruding portion from the cylinder in the rod,
    A groove is formed on the end surface of the closing member,
    The dust boot is attached to the closing member by inserting one end into the groove and fixing the dust boot.
  2. 　前記溝部は、前記ロッドを中心軸とする環状溝であり、
    　前記ダストブーツの一端は、前記環状溝の内周面に装着されることを特徴とする請求項１に記載のダンパ。     The groove is an annular groove having the rod as a central axis,
    The damper according to claim 1, wherein one end of the dust boot is attached to an inner peripheral surface of the annular groove.
  3. 　前記環状溝の内周面には、前記ダストブーツの一端が装着される環状の取付溝が形成されることを特徴とする請求項２に記載のダンパ。 The damper according to claim 2, wherein an annular mounting groove to which one end of the dust boot is mounted is formed on an inner peripheral surface of the annular groove.
  4. 　前記シリンダは、
    　前記ピストンが内周に沿って摺動自在で、当該ピストンによって２つの流体室が画成されるインナチューブと、
    　前記インナチューブを収容し、当該内筒との間にリザーバ室を画成するアウタチューブと、を備え、
    　前記閉塞部材は、前記アウタチューブにおけるロッド側の開口部を閉塞することを特徴とする請求項１に記載のダンパ。     The cylinder is
    An inner tube in which the piston is slidable along an inner periphery and two fluid chambers are defined by the piston;
    An outer tube that houses the inner tube and defines a reservoir chamber between the inner tube and the inner tube;
    The damper according to claim 1, wherein the closing member closes a rod side opening of the outer tube.
PCT/JP2008/055137 2008-03-19 2008-03-19 Damper WO2009116155A1 (en)

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KR1020107020710A KR20100119569A (en) 2008-03-19 2008-03-19 Damper
JP2010503708A JPWO2009116155A1 (en) 2008-03-19 2008-03-19 damper
CN2008801223669A CN101910673A (en) 2008-03-19 2008-03-19 Damper
PCT/JP2008/055137 WO2009116155A1 (en) 2008-03-19 2008-03-19 Damper
TW097118643A TW200940848A (en) 2008-03-19 2008-05-21 Damper

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Publication number Priority date Publication date Assignee Title
JP5756351B2 (en) * 2011-06-20 2015-07-29 カヤバ工業株式会社 Vibration control device for railway vehicles
CN103883586A (en) * 2014-01-07 2014-06-25 江苏大洋精锻有限公司 Dustproof device for oil cylinder
CN104074912A (en) * 2014-06-25 2014-10-01 彭友莲 Dustproof automotive shock absorber

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JPS57194885U (en) * 1981-06-05 1982-12-10
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JP2000257606A (en) * 1999-03-09 2000-09-19 Tokico Ltd Cylinder device
JP2007071246A (en) * 2005-09-05 2007-03-22 Kayaba Ind Co Ltd Dust boot

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