JPH076540U - Hydraulic shock absorber - Google Patents
Hydraulic shock absorberInfo
- Publication number
- JPH076540U JPH076540U JP3941293U JP3941293U JPH076540U JP H076540 U JPH076540 U JP H076540U JP 3941293 U JP3941293 U JP 3941293U JP 3941293 U JP3941293 U JP 3941293U JP H076540 U JPH076540 U JP H076540U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- outer peripheral
- peripheral surface
- reservoir tube
- shock absorber
- 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.)
- Pending
Links
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 14
- 230000035939 shock Effects 0.000 title claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 46
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 238000000465 moulding Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
(57)【要約】
【目的】 作動液流路の有効流路断面積を確実に拡大で
きる液圧緩衝器を提供する。
【構成】 リザーバチューブ１の管端２に設けたボトム
受部３上に、シリンダ６の下端を嵌合させたボトムボデ
ィ５の外周部５ａが軸方向に当接され、該ボトムボディ
５の外周部５ａとボトム受部３間に形成された凹部４と
で作動液通路１２を構成した液圧緩衝器のボトム構造に
おいて、ボトムボディ５の外周部５ａをシリンダ６の外
径Ｄ以下に形成し、またシリンダ６の下端部の外周面に
筒状体８ａを嵌合させ、該筒状体８ａに、径方向に延在
し、作動液の流動を許容する連通孔８ｃを備えた突片部
８ｂが形成され、該突片部８ｂをリザーバチューブ１の
内周面とシリンダ６の外周面間に挟持させた。
(57) [Abstract] [Purpose] To provide a hydraulic shock absorber capable of surely expanding the effective flow passage cross-sectional area of a hydraulic fluid flow passage. [Structure] An outer peripheral portion 5a of a bottom body 5 fitted with a lower end of a cylinder 6 is axially abutted on a bottom receiving portion 3 provided at a pipe end 2 of a reservoir tube 1, and an outer periphery of the bottom body 5 is formed. In the bottom structure of the hydraulic shock absorber in which the hydraulic fluid passage 12 is constituted by the concave portion 4 formed between the portion 5a and the bottom receiving portion 3, the outer peripheral portion 5a of the bottom body 5 is formed with the outer diameter D of the cylinder 6 or less. Further, a cylindrical body 8a is fitted on the outer peripheral surface of the lower end of the cylinder 6, and a projection portion provided with a communication hole 8c extending in the radial direction in the cylindrical body 8a and allowing the flow of hydraulic fluid. 8b is formed, and the protruding piece 8b is sandwiched between the inner peripheral surface of the reservoir tube 1 and the outer peripheral surface of the cylinder 6.
Description
【０００１】[0001]
この考案は、例えば車両のサスペンション等においてコイルスプリングと組み 合わせて使用される液圧緩衝器に関する。 The present invention relates to a hydraulic shock absorber used in combination with a coil spring in, for example, a vehicle suspension.
【０００２】[0002]
従来、液圧緩衝器のボトム構造には、実開平２−１４６２４１号公報に記載さ れたものがある。この構造では、リザーバチューブより連続して、管端を構成す る底部を一体に形成し、該底部に、ボトム受部を構成するエンボス部を複数形成 している。 Conventionally, a bottom structure of a hydraulic shock absorber is disclosed in Japanese Utility Model Laid-Open No. 2-146241. In this structure, a bottom portion forming a pipe end is integrally formed continuously with the reservoir tube, and a plurality of embossed portions forming a bottom receiving portion are formed on the bottom portion.
【０００３】 具体的には、リザーバチューブを鋼管で構成し、該リザーバチューブの下端を 閉塞成形して管端を構成している。この管端の、管軸に対する円周方向の複数位 置に、管内に突出するボトム受部をエンボス成形で形成している。各ボトム受部 に、前記管端の閉塞端の中央に向かって縮径するテーパ部を形成し、該テーパ部 上にボトムボディの外周部を着座させている。このボトムボディの外周部と前記 ボトム受部間に形成された凹部とで作動液流路を形成している。Specifically, the reservoir tube is formed of a steel pipe, and the lower end of the reservoir tube is closed and molded to form the pipe end. Bottom receiving portions projecting into the pipe are formed by embossing at a plurality of positions of the pipe end in the circumferential direction with respect to the pipe axis. Each bottom receiving portion is formed with a taper portion whose diameter decreases toward the center of the closed end of the pipe end, and the outer peripheral portion of the bottom body is seated on the taper portion. The outer peripheral portion of the bottom body and the concave portion formed between the bottom receiving portions form a working fluid flow path.
【０００４】[0004]
ボトムボディの上端に嵌合させてシリンダ下端を軸方向に受けるばかりでなく 、該シリンダ下端を前記リザーバチューブ下端に対して同心に保持するために、 ボトム受部のテーパ部上に着座させるボトムボディの外周部を、シリンダ下端か ら外方に張り出すフランジ状に形成することが必要となる。このような場合には 、前記ボトムボディの外周部によって前記作動液流路の開口部が絞られるので、 リザーバチューブの径寸法によっては作動液流路の有効流路断面積を充分に確保 できないこととなる。この結果、シリンダとリザーバチューブ間からシリンダ内 に作動液がスムーズに戻ることができず、戻り遅れが生じるという作用上の問題 が生じることがある。 The bottom body not only fits on the upper end of the bottom body to receive the lower end of the cylinder in the axial direction, but also sits on the tapered part of the bottom receiving part to hold the lower end of the cylinder concentrically with the lower end of the reservoir tube. It is necessary to form the outer peripheral portion of the cylinder into a flange shape that projects outward from the lower end of the cylinder. In such a case, since the opening of the hydraulic fluid channel is narrowed by the outer peripheral portion of the bottom body, it may not be possible to secure a sufficient effective fluid channel cross-sectional area depending on the diameter of the reservoir tube. Becomes As a result, the working fluid may not be able to smoothly return to the inside of the cylinder from between the cylinder and the reservoir tube, which may cause a delay in returning, which may cause a functional problem.
【０００５】 この考案は上記課題を解決するためになしたもので、その目的とするところは 作動液流路の有効流路断面積を確実に拡大できる液圧緩衝器を提供することにあ る。The present invention has been made in order to solve the above problems, and an object thereof is to provide a hydraulic shock absorber capable of surely expanding the effective flow passage cross-sectional area of the working fluid flow passage. .
【０００６】[0006]
上記目的を達成するために、この考案は、リザーバチューブの下端を閉塞成形 して構成された管端の、管軸に対する円周方向の複数位置に、管内に突出するボ トム受部を形成し、該ボトム受部上に、シリンダの下端を嵌合させたボトムボデ ィの外周部が軸方向に当接され、該ボトムボディの外周部と前記ボトム受部間に 形成された凹部とで作動液通路を構成した液圧緩衝器のボトム構造において、前 記ボトムボディの外周部を前記シリンダの外径以下に形成し、また前記リザーバ チューブの下端部の内周面又は前記シリンダの下端部の外周面のいずれか一方の 周面に筒状体を嵌合させ、該筒状体に、径方向に延在し、作動液の流通を許容す る連通孔を備えた突片部が形成され、該突片部を前記周面間に挟持させたもので ある。 In order to achieve the above-mentioned object, the present invention forms a bottom end projecting into a pipe at a plurality of positions in a circumferential direction with respect to a pipe axis of a pipe end formed by closing and molding a lower end of a reservoir tube. The outer peripheral portion of the bottom body fitted with the lower end of the cylinder is axially abutted on the bottom receiving portion, and the outer peripheral portion of the bottom body and the concave portion formed between the bottom receiving portion serve as a hydraulic fluid. In the bottom structure of the hydraulic shock absorber having the passage, the outer peripheral portion of the bottom body is formed to be equal to or smaller than the outer diameter of the cylinder, and the inner peripheral surface of the lower end of the reservoir tube or the outer periphery of the lower end of the cylinder is formed. A tubular body is fitted on one of the peripheral surfaces of the surfaces, and a projecting portion having a communication hole that extends in the radial direction and allows the working fluid to flow is formed on the tubular body. The projecting piece is sandwiched between the peripheral surfaces.
【０００７】[0007]
上記構成によれば、管端のボトム受部に、シリンダの外径以下に形成したボト ムボディの外周部を当接させて、ボトムボディに嵌合されたシリンダの下端を軸 方向に受ける。また、前記シリンダの下端部とリザーバチューブの下端部間に筒 状体及び突片部を配置して、シリンダの下端をリザーバチューブの下端に対して 同心に保持する。 According to the above configuration, the bottom receiving portion at the pipe end is brought into contact with the outer peripheral portion of the bottom body having a diameter equal to or smaller than the outer diameter of the cylinder to receive the lower end of the cylinder fitted in the bottom body in the axial direction. Further, a tubular body and a projecting piece are arranged between the lower end of the cylinder and the lower end of the reservoir tube to hold the lower end of the cylinder concentric with the lower end of the reservoir tube.
【０００８】 また、前記突片部の連通孔によって、シリンダとリザーバチューブ間における 作動液の流動を妨げない。また前記ボトムボディの外周部によって作動液通路を 絞ることがないので、該作動液通路の有効開口幅は拡大される。このため、作動 液はシリンダとリザーバチューブ間からシリンダ内にスムーズに戻る。Further, the communication hole of the projecting piece does not prevent the flow of the working fluid between the cylinder and the reservoir tube. Further, since the working fluid passage is not narrowed by the outer peripheral portion of the bottom body, the effective opening width of the working fluid passage is enlarged. Therefore, the hydraulic fluid smoothly returns to the inside of the cylinder from between the cylinder and the reservoir tube.
【０００９】[0009]
以下、この考案の一実施例を説明する。 An embodiment of the present invention will be described below.
【００１０】 図１は液圧緩衝器のボトム構造を示す縦断面図、図２（１）は図１に示す液圧 緩衝器で使用されたセンタリング部材を示す平面図、（２）は（１）の正面図で ある。FIG. 1 is a vertical cross-sectional view showing the bottom structure of the hydraulic shock absorber, FIG. 2 (1) is a plan view showing a centering member used in the hydraulic shock absorber shown in FIG. 1, and (2) is (1) ) Is a front view of FIG.
【００１１】 リザーバチューブ１は鋼管で構成されており、その底部を構成する半球面状の 管端２は前記リザーバチューブ１の下端をスピニング加工で閉塞成形して一体に 構成されている。The reservoir tube 1 is made of a steel pipe, and a hemispherical tube end 2 constituting the bottom of the reservoir tube 1 is integrally formed by closing the lower end of the reservoir tube 1 by spinning.
【００１２】 この管端２の管軸に対する円周方向の複数位置には、管内に突出する側断面三 角形状のボトム受部３がエンボス成形で形成され、該ボトム受部３には、前記管 端２の閉塞端の中央に向かって縮径するテーパ部３ａが形成されている。４は各 ボトム受部３間に形成された凹部である。At a plurality of positions in the circumferential direction of the pipe end 2 with respect to the pipe axis, bottom receiving parts 3 having a triangular cross-section in a side view and projecting into the pipe are formed by embossing, and the bottom receiving parts 3 have the above-mentioned features. A tapered portion 3a is formed that has a diameter that decreases toward the center of the closed end of the tube end 2. Reference numeral 4 is a recess formed between the bottom receiving portions 3.
【００１３】 前記各ボトム受部３の前記テーパ部３ａ上にはボトムボディ５の外周部５ａが 軸方向に当接され、該ボトムボディ５の上端にはシリンダ６の下端が嵌合されて いる。前記ボトムボディ５の外周部５ａは前記シリンダ６の外径Ｄ以下に形成さ れている。The outer peripheral portion 5a of the bottom body 5 is axially abutted on the tapered portion 3a of each bottom receiving portion 3, and the lower end of the cylinder 6 is fitted to the upper end of the bottom body 5. . The outer peripheral portion 5a of the bottom body 5 is formed with an outer diameter D of the cylinder 6 or less.
【００１４】 前記リザーバチューブ１の下端部の内周面とシリンダ６の下端部の外周面間に はセンタリング部材８が次に述べるように介装されている。このセンタリング部 材８は、筒状体８ａの外周面に、径方向に延在する突片部８ｂを形成し、該突片 部８ｂに、作動液の流通を許容する切欠き状の連通孔８ｃを形成した構成にして いる。A centering member 8 is interposed between the inner peripheral surface of the lower end of the reservoir tube 1 and the outer peripheral surface of the lower end of the cylinder 6 as described below. The centering member 8 has a projecting piece portion 8b extending in the radial direction formed on the outer peripheral surface of the cylindrical body 8a, and the projecting piece portion 8b has a notch-shaped communication hole that allows the working fluid to flow therethrough. 8c is formed.
【００１５】 前記センタリング部材８を更に詳述すると、前記筒状体８ａの一端には内方に 張り出す鍔部８ｄが形成されている。また、前記突片部８ｂは、筒状体８ａの円 周方向で管軸方向位置が互い違いに変化する複数の突片部８ｂ1 、８ｂ2 で構成 されている。前記突片部８ｂ1 、８ｂ2 は筒状体８ａの軸方向と直角で円周方向 に長い平面状に形成されている。一方の突片部８ｂ1 は筒状体８ａの他端に、他 方の突片部８ｂ2 は前記鍔部８ｄと一方の突片部８ｂ1 との間に形成されている 。前記連通孔８ｃは前記突片部８ｂ1 、８ｂ2 の隣接端間に形成されている。To describe the centering member 8 in more detail, a flange portion 8d that projects inward is formed at one end of the tubular body 8a. Further, the projecting piece portion 8b is a tube-axis direction position in the circle circumferential direction of the cylindrical body 8a is composed of a plurality of projected pieces 8b 1, 8b 2 which changes alternately. The projecting pieces 8b 1 and 8b 2 are formed in a plane shape that is perpendicular to the axial direction of the tubular body 8a and long in the circumferential direction. One protrusion piece 8b 1 is formed at the other end of the tubular body 8a, and the other protrusion piece 8b 2 is formed between the flange portion 8d and the one protrusion piece 8b 1 . The communication hole 8c is formed between the adjacent ends of the projecting piece portions 8b 1 and 8b 2 .
【００１６】 このようなセンタリング部材８の筒状体８ａが前記シリンダ６の下端部の外周 面に嵌合され、鍔部８ｄが前記ボトムボディ５の上端とシリンダ６の下端間に挟 持されている。これによって、各突片部８ｂ1 、８ｂ2 がシリンダ６の下端から 所定の管軸方向位置に配置されている。The cylindrical body 8a of the centering member 8 is fitted to the outer peripheral surface of the lower end portion of the cylinder 6, and the flange portion 8d is sandwiched between the upper end of the bottom body 5 and the lower end of the cylinder 6. There is. As a result, the projecting pieces 8b 1 and 8b 2 are arranged at predetermined pipe axis direction positions from the lower end of the cylinder 6.
【００１７】 また、前記突片部８ｂ1 、８ｂ2 がリザーバチューブ１の下端部の内周面とシ リンダ６の下端部の外周面間に挟持されて、リザーバチューブ１の下端とシリン ダ６の下端とが互いに同心に保持されている。これによって、前記リザーバチュ ーブ１とシリンダ６間にはリザーバ室１０が形成され、前記リザーバチューブ１ の管端２とボトムボディ５の下端間にはボトム室１１が形成され、前記ボトムボ ディ５の外周部５ａと前記ボトム受部３間に形成された凹部４との間には、前記 リザーバ室１０とボトム室１１を連通させる作動液通路１２が形成されている。 尚、１３はボトムボディ５に装着したボトムバルブである。Further, the projecting pieces 8 b 1 and 8 b 2 are sandwiched between the inner peripheral surface of the lower end portion of the reservoir tube 1 and the outer peripheral surface of the lower end portion of the cylinder 6, and the lower end of the reservoir tube 1 and the cylinder 6 are held. And the lower end of is held concentrically with each other. As a result, a reservoir chamber 10 is formed between the reservoir tube 1 and the cylinder 6, a bottom chamber 11 is formed between the pipe end 2 of the reservoir tube 1 and the lower end of the bottom body 5, and the bottom body 5 is formed. A hydraulic fluid passage 12 that connects the reservoir chamber 10 and the bottom chamber 11 is formed between the outer peripheral portion 5 a and the recess 4 formed between the bottom receiving portion 3. Reference numeral 13 is a bottom valve mounted on the bottom body 5.
【００１８】 上記構成によれば、管端２のボトム受部３に、シリンダ６の外径Ｄ以下に形成 したボトムボディ５の外周部５ａを当接させて、シリンダ６の下端を軸方向に受 ける。また、前記シリンダ６の下端部とリザーバチューブ１の下端部間に筒状体 ３ａ及び突片部８ｂを配置して、シリンダ６の下端をリザーバチューブ１の下端 に対して同心に保持する。According to the above structure, the bottom receiving portion 3 of the pipe end 2 is brought into contact with the outer peripheral portion 5a of the bottom body 5 formed with the outer diameter D of the cylinder 6 or less, and the lower end of the cylinder 6 is axially moved. Accept. Further, a cylindrical body 3a and a projecting piece portion 8b are arranged between the lower end of the cylinder 6 and the lower end of the reservoir tube 1 to hold the lower end of the cylinder 6 concentric with the lower end of the reservoir tube 1.
【００１９】 また、前記突片部８ｂの連通孔８ｃによって、シリンダ６とリザーバチューブ １間における作動液の流動を妨げない。また、図１に示すように、シリンダ６の 外径Ｄ以下に形成したボトムボディ５の外周部５ａによって、作動液通路１２を 絞ることがないので、該作動液通路１２の有効開口幅はｔ0 からｔ1 に拡大され る。このため、作動液はリザーバ室１０からシリンダ６内にスムーズに戻る。こ れによって、伸行程時、図示しないピストンロッドの退出分の作動液がシリンダ ６内にスムーズに補充される。Further, the communication hole 8c of the projecting piece 8b does not hinder the flow of the hydraulic fluid between the cylinder 6 and the reservoir tube 1. Further, as shown in FIG. 1, since the outer peripheral portion 5a of the bottom body 5 formed with the outer diameter D of the cylinder 6 or less does not restrict the hydraulic fluid passage 12, the effective opening width of the hydraulic fluid passage 12 is t. Expanded from 0 to t 1 . Therefore, the hydraulic fluid smoothly returns from the reservoir chamber 10 into the cylinder 6. With this, during the extension stroke, the working fluid corresponding to the withdrawal of the piston rod (not shown) is smoothly replenished into the cylinder 6.
【００２０】 また、センタリング部材８の突片部８ｂ1 が突片部８ｂ2 よりもシリンダ６の 下端から離れた高い位置に配置されており、しかも管軸方向と直角で円周方向に 長い平面状に形成されているので、車両の走行時の振動でリザーバ室１０内の作 動液の液面が跳動することが前記突片部８ｂ1 により抑制されることとなり、上 記伸行程時に作動液をシリンダ６内に補充するときにリザーバ室１０内のエアが 作動液と共にシリンダ６内に吸い込まれるエアレーションが抑制される。また、 何等かの異常等により作動液が減少した場合にも、センタリング部材８の突片部 ８ｂ2 が突片部８ｂ1 より下位に配置されており、しかも管軸方向とほぼ直角で 円周方向に長い平面状に形成されているので、上記と同様なエアレーションの抑 制作用が得られる。Further, the projecting piece 8b 1 of the centering member 8 is arranged at a position higher than the projecting piece 8b 2 from the lower end of the cylinder 6, and moreover, is a plane long in the circumferential direction at right angles to the pipe axis direction. Since it is formed in a shape, the protrusion 8b 1 prevents the liquid surface of the working fluid in the reservoir chamber 10 from bouncing due to the vibration during traveling of the vehicle, and it is activated during the above-described extension stroke. The aeration in which the air in the reservoir chamber 10 is sucked into the cylinder 6 together with the working liquid when replenishing the liquid in the cylinder 6 is suppressed. Further, even when the hydraulic fluid is reduced due to some abnormality or the like, the projecting piece 8b 2 of the centering member 8 is arranged below the projecting piece 8b 1 , and the circumference of the centering member 8 is substantially perpendicular to the pipe axis direction. Since it is formed in a plane shape that is long in the direction, the same aeration suppression production as above can be obtained.
【００２１】 尚、この実施例では、シリンダ６の下端部の外周面に筒状体８ａを嵌合させ、 該筒状体８ａとリザーバチューブ１の下端部の内周面との間に各突片部８ｂを挟 持させたが、逆に、リザーバチューブ１の下端部の内周面に筒状体８ａを嵌合さ せ、該筒状体８ａとシリンダ６の下端部の外周面との間に各突片部８ｂを挟持さ せても良い。In this embodiment, the cylindrical body 8a is fitted to the outer peripheral surface of the lower end of the cylinder 6, and each projection is provided between the cylindrical body 8a and the inner peripheral surface of the lower end of the reservoir tube 1. Although the piece portion 8b was sandwiched, conversely, the tubular body 8a was fitted to the inner peripheral surface of the lower end portion of the reservoir tube 1, and the tubular body 8a and the outer peripheral surface of the lower end portion of the cylinder 6 were joined. Each projecting piece portion 8b may be sandwiched therebetween.
【００２２】[0022]
以上の通り、この考案は、リザーバチューブの下端を閉塞成形して構成された 管端の、管軸に対する円周方向の複数位置に、管内に突出するボトム受部を形成 し、該ボトム受部上に、シリンダの下端を嵌合させたボトムボディの外周部が軸 方向に当接され、該ボトムボディの外周部と前記ボトム受部間に形成された凹部 とで作動液通路を構成した液圧緩衝器のボトム構造において、前記ボトムボディ の外周部を前記シリンダの外径以下に形成し、また前記リザーバチューブの下端 部の内周面又は前記シリンダの下端部の外周面のいずれか一方の周面に筒状体を 嵌合させ、該筒状体に、径方向に延在し、作動液の流通を許容する連通孔を備え た突片部が形成され、該突片部を前記周面間に挟持させたため、管端のボトム受 部に、シリンダの外径以下に形成したボトムボディの外周部を当接させて、ボト ムボディに嵌合したシリンダの下端を軸方向に受けることができ、また前記シリ ンダの下端部とリザーバチューブの下端部間に筒状体及び突片部を配置して、シ リンダの下端をリザーバチューブの下端に対して同心に保持することができる。 As described above, the present invention forms bottom receiving portions projecting into the pipe at a plurality of positions in the circumferential direction with respect to the pipe axis of the pipe end formed by closing and molding the lower end of the reservoir tube. An outer peripheral portion of the bottom body, into which the lower end of the cylinder is fitted, is abutted in the axial direction, and a hydraulic fluid passage is formed by the outer peripheral portion of the bottom body and a recess formed between the bottom receiving portion. In the bottom structure of the pressure shock absorber, the outer peripheral portion of the bottom body is formed to have a diameter equal to or smaller than the outer diameter of the cylinder, and either the inner peripheral surface of the lower end portion of the reservoir tube or the outer peripheral surface of the lower end portion of the cylinder is formed. A tubular body is fitted on the peripheral surface, and a projecting piece portion is formed in the tubular body, the projecting piece portion extending in the radial direction and having a communication hole for allowing the flow of the working fluid is formed. Since it is sandwiched between the surfaces, the cylinder is The bottom body formed to have an outer diameter or less can be brought into contact with the bottom body to receive the lower end of the cylinder fitted in the bottom body in the axial direction, and between the lower end of the cylinder and the lower end of the reservoir tube. The lower end of the cylinder can be held concentrically with the lower end of the reservoir tube by disposing the tubular body and the protruding piece.
【００２３】 また、前記突片部の連通孔によって、シリンダとリザーバチューブ間における 作動液の流動を妨げず、また前記ボトムボディの外周部によって作動液通路を絞 ることがないので、該作動液通路の有効開口幅を確実に拡大することができる。 従って、作動液をシリンダとリザーバチューブ間からシリンダ内にスムーズに戻 すことができることとなり、作動液の戻り遅れの防止が確実に図れる。また、リ ザーバ室内の液面の跳動を妨げ、エアレーションを防止する。Further, the communication hole of the projecting piece does not hinder the flow of the hydraulic fluid between the cylinder and the reservoir tube, and the outer peripheral portion of the bottom body does not restrict the hydraulic fluid passage. The effective opening width of the passage can be reliably expanded. Therefore, the working fluid can be smoothly returned to the inside of the cylinder from between the cylinder and the reservoir tube, and the delay of the return of the working fluid can be surely prevented. It also prevents the liquid level in the reservoir chamber from bouncing and prevents aeration.
【図１】この考案の一実施例である液圧緩衝器のボトム
構造を示す縦断面図である。FIG. 1 is a vertical sectional view showing a bottom structure of a hydraulic shock absorber according to an embodiment of the present invention.
【図２】（１） 図１に示す液圧緩衝器で使用されたセ
ンタリング部材を示す平面図である。 （２） （１）の正面図である。2 (1) is a plan view showing a centering member used in the hydraulic shock absorber shown in FIG. 1. FIG. (2) It is a front view of (1).
１ リザーバチューブ ２ 管端 ３ ボトム受部 ５ ボトムボディ ５ａ 外周部 Ｄ 外径 ６ シリンダ ８ａ 筒状体 ８ｂ 突片部 ８ｃ 連通孔 １２ 作動液通路 1 Reservoir tube 2 Pipe end 3 Bottom receiving part 5 Bottom body 5a Outer peripheral part D Outer diameter 6 Cylinder 8a Cylindrical body 8b Projecting piece part 8c Communication hole 12 Working fluid passage
Claims (1)
構成された管端の、管軸に対する円周方向の複数位置
に、管内に突出するボトム受部を形成し、該ボトム受部
上に、シリンダの下端を嵌合させたボトムボディの外周
部が軸方向に当接され、該ボトムボディの外周部と前記
ボトム受部間に形成された凹部とで作動液通路を構成し
た液圧緩衝器のボトム構造において、前記ボトムボディ
の外周部を前記シリンダの外径以下に形成し、また前記
リザーバチューブの下端部の内周面又は前記シリンダの
下端部の外周面のいずれか一方の周面に筒状体を嵌合さ
せ、該筒状体に、径方向に延在し、作動液の流通を許容
する連通孔を備えた突片部が形成され、該突片部を前記
周面間に挟持させたことを特徴とする液圧緩衝器。1. A bottom receiving part projecting into the pipe is formed at a plurality of positions in a circumferential direction with respect to the pipe axis of a pipe end formed by closing and molding a lower end of a reservoir tube, and the bottom receiving part is formed on the bottom receiving part. A hydraulic shock absorber in which an outer peripheral portion of a bottom body fitted with a lower end of a cylinder is axially abutted, and a working fluid passage is constituted by an outer peripheral portion of the bottom body and a recess formed between the bottom receiving portions. In the bottom structure, the outer peripheral portion of the bottom body is formed to have an outer diameter equal to or less than the outer diameter of the cylinder, and the inner peripheral surface of the lower end portion of the reservoir tube or the outer peripheral surface of the lower end portion of the cylinder is formed on one peripheral surface. A tubular body is fitted, and a projecting piece portion is formed in the tubular body, the projecting piece portion extending in the radial direction and having a communication hole that allows the flow of the working fluid is formed, and the projecting piece portion is provided between the circumferential surfaces. A hydraulic shock absorber characterized by being sandwiched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3941293U JPH076540U (en) | 1993-06-28 | 1993-06-28 | Hydraulic shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3941293U JPH076540U (en) | 1993-06-28 | 1993-06-28 | Hydraulic shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH076540U true JPH076540U (en) | 1995-01-31 |
Family
ID=12552283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3941293U Pending JPH076540U (en) | 1993-06-28 | 1993-06-28 | Hydraulic shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH076540U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4927388A (en) * | 1972-07-10 | 1974-03-11 |
-
1993
- 1993-06-28 JP JP3941293U patent/JPH076540U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4927388A (en) * | 1972-07-10 | 1974-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0338439U (en) | ||
| JP2559176Y2 (en) | Master cylinder reservoir cap | |
| JPH076540U (en) | Hydraulic shock absorber | |
| US10253840B2 (en) | Cylinder apparatus | |
| JP2007057088A (en) | Cylinder device | |
| JPH01118231U (en) | ||
| JPH0577637U (en) | bush | |
| JPH0438112Y2 (en) | ||
| JPH0960680A (en) | Hydraulic shock absorber | |
| JPH0687745U (en) | Hydraulic shock absorber | |
| CN218094020U (en) | Guider component and shock absorber | |
| JP3635444B2 (en) | Bound stopper structure of hydraulic shock absorber | |
| US12115830B2 (en) | Shock absorber | |
| CN215805949U (en) | Bottom cover and transverse shock absorber | |
| KR100837235B1 (en) | Shock absorber cap | |
| CN103791019B (en) | Amortisseur | |
| JPS6348831Y2 (en) | ||
| JPH0942355A (en) | Cylinder centering device in hydraulic shock absorber | |
| JP2528380Y2 (en) | Bump stopper structure of hydraulic shock absorber | |
| US20250109778A1 (en) | Piston for buffer device and buffer device | |
| JP2561267Y2 (en) | Bottom structure of shock absorber | |
| KR102565759B1 (en) | Active suspension | |
| JP2024154066A (en) | Shock absorber | |
| JP2007154977A (en) | Cylinder device | |
| JPH0687746U (en) | Hydraulic buffer reservoir tube structure |