JP3953670B2 - Hydraulic shock absorber - Google Patents

Hydraulic shock absorber Download PDF

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Publication number
JP3953670B2
JP3953670B2 JP02469199A JP2469199A JP3953670B2 JP 3953670 B2 JP3953670 B2 JP 3953670B2 JP 02469199 A JP02469199 A JP 02469199A JP 2469199 A JP2469199 A JP 2469199A JP 3953670 B2 JP3953670 B2 JP 3953670B2
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Japan
Prior art keywords
shock absorber
hydraulic shock
sleeve
spring
cylinder body
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JP2000220685A (en
Inventor
義郎 問山
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KYB Corp
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KYB Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/062—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper
    • B60G15/063—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper characterised by the mounting of the spring on the damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/021—Spring characteristics, e.g. mechanical springs and mechanical adjusting means the mechanical spring being a coil spring

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、油圧緩衝器に関し、特に、懸架ばねのばね力を調整し得るようにした油圧緩衝器の改良に関する。
【０００２】
【従来の技術】
たとえば、自動二輪車のリアクッションユニットとして利用される油圧緩衝器の場合もそうであるが、多くの油圧緩衝器にあって、シリンダ体に対して出没可能に挿通されるピストンロッドが懸架ばねによってシリンダ体から突出する方向に附勢されてなるとしている。
【０００３】
そして、このとき、油圧緩衝器によっては、自動二輪車が走行する路面の状況に応じて、あるいは、ライダの好みなどで懸架ばねのばね力を調整し得るように設定されてなるとしている。
【０００４】
そしてまた、懸架ばねのばね力を調整する方策としては、従来から種々の提案があるが、たとえば、図３に示す油圧緩衝器にあっては、懸架ばねの下端位置を昇降させることで、懸架ばねのばね力を調整するとしている。
【０００５】
すなわち、この図３に示す油圧緩衝器にあっては、シリンダ体１に対して出没可能に挿通されるピストンロッド２をシリンダ体１から突出させる方向に附勢する懸架ばね３の上端がピストンロッド２の上端に保持された上方ばね受４に係止されると共に懸架ばね３の下端がシリンダ体１の外周に形成の螺状部１ａに上下動可能に介装された下方ばね受５に担持されてなるとしている。
【０００６】
ちなみに、図示するところでは、下方ばね受５は、上記の螺状部１ａに回動可能に螺装された固定ナット６によって下方から支承されてなるとし、この固定ナット６に対する回動操作で上下動されるとしている。
【０００７】
一方、上記の螺状部１ａには、下方ばね受５の昇降方向に沿うように、すなわち、上下方向に延在される帯状の螺条欠落部１ｂを有しており、この螺条欠落部１ｂには、相関距離を等間隔とする高さ位置表示目盛１ｃを刻印などで形成してなるとしている。
【０００８】
それゆえ、この油圧緩衝器にあっては、螺状部１ａに螺装されている固定ナット６を回動操作することで、下方ばね受５を昇降させることが可能になり、懸架ばね３のばね力を調整し得ると共に、このときに、固定ナット６の下端位置が上記の高さ位置表示目盛１ｃに照準される位置を確認することで、懸架ばね３のばね力の調整状態を確認できることになる。
【０００９】
【発明が解決しようとする課題】
しかしながら、上記した油圧緩衝器にあっては、以下のような不具合があると指摘される可能性がある。
【００１０】
すなわち、上記の油圧緩衝器にあっては、高さ位置表示目盛１ｃを刻印などするための螺条欠落部１ｂが螺条部１ａを帯状に切削することで形成されるが、その際に、螺条部１ａの螺条欠落部１ｂとの境界部になる縁部１ｄにいわゆるバリが発生することになる。
【００１１】
それゆえ、このバリを完全撤去する作業が必須になるが、このとき、バリが螺条部１ａを形成する各ピッチ毎に発生するので、その量が多くなり、撤去作業に時間を要し、生産性の向上を図り難くする不具合がある。
【００１２】
また、螺条欠落部１ｂは、螺条部１ａに比較すれば、言わば凹んでいるために、車載状態での利用時に泥などを詰り易くすることになり、泥などが詰る場合には固定ナット６の回動操作を困難にしたり、甚だしい場合には、固定ナット６の回動を不能にすることになる危惧がある。
【００１３】
この発明は、上記した事情を鑑みて創案されたものであって、その目的とするところは、懸架ばねのばね力を調整するための作動性能を保障し得るのはもちろんのこと、生産性の低下の危惧がなくして、製品コストの低廉化に寄与し、その汎用性の向上を期待するのに最適となる油圧緩衝器を提供することである。
【００１４】
【課題を解決するための手段】
上記した目的を達成するために、この発明による油圧緩衝器の構成を、基本的には、シリンダ体に対して出没可能に挿通されるピストンロッドをシリンダ体から突出させる方向に附勢する懸架ばねの上端がピストンロッドの上端に保持された上方ばね受に係止されると共に懸架ばねの下端がシリンダ体の外周に形成の螺状部に回動可能に螺装された下方ばね受に担持されてなる油圧緩衝器において、螺状部より下側のシリンダ体外周に環状の螺条欠落部を形成し、この螺条欠落部の外周にスリーブを介装させ、また、このスリーブの外周面に相関距離を等間隔とする高さ位置表示目盛を形成させ、上記下方ばね受を上記螺状部の外周に上下移動自在に螺合した本体部と、この本体部から下方に向けて延設したスカート部とで構成し、上記スカート部の下端を上記本体部の螺合位置に応じて上記の高さ位置表示目盛に照準させることを特徴とする油圧緩衝器
【００１５】
そして、上記した構成において、より具体的には、スリーブが合口を有していて復元力を有しながら拡径可能に形成されてなり、かつ、螺条欠落部に介装されたときに、螺状部に副って回動しながら下降する下方ばね受のストッパとして機能するように設定されてなるとする。
【００１６】
【発明の実施の形態】
以下に、図示した実施の形態に基づいて、この発明を説明するが、図１に示すように、この発明による油圧緩衝器にあっても、基本的には、前記した図３に示す従来の油圧緩衝器と同様に構成されている。
【００１７】
それゆえ、図示する実施の形態にあって、その構成が図３に示す油圧緩衝器と同様となるところについては、要する場合を除き、図中に同一の符号を付するのみとして、その詳しい説明を省略し、以下には、この発明において特徴となるところを中心に説明する。
【００１８】
すなわち、この発明の一実施の形態に係る油圧緩衝器は、図１、図２に示すように、シリンダ体１に対して出没可能に挿通されるピストンロッド２をシリンダ体１から突出させる方向に附勢する懸架ばね３の上端がピストンロッド２の上端に保持された上方ばね受４に係止されると共に懸架ばね３の下端がシリンダ体１の外周に形成の螺状部１ａに回動可能に螺装された下方ばね受８に担持されてなるものである。
そして、上記螺状部１ａより下側のシリンダ体１の外周に環状の螺条欠落部１ e を形成し、この螺条欠落部１ e の外周にスリーブ７を介装させ、また、このスリーブ７の外周面に相関距離を等間隔とする高さ位置表示目盛７ａを形成させている。
更に、上記下方ばね受８を上記螺状部１ａの外周に上下移動自在に螺合した本体部８ａと、この本体部８ａから下方に向けて延設したスカート部８ｂとで構成し、上記スカート部８ｂの下端を上記本体部８ａの螺合位置に応じて上記の高さ位置表示目盛７ａに照準させるものである。
【００１９】
そして、スリーブ７は、図示する実施の形態では、合口（図示せず）を有していて復元力を有しながら拡径可能なように形成されており、また、外周面に刻印などによって形成されて相関距離を等間隔とする高さ位置表示目盛７ａを有してなるとしている。
【００２０】
そしてまた、このスリーブ７は、螺条欠落部１ｅに介装されたときに、螺状部１ａに副って回動しながら下降する下方ばね受８のストッパとして機能するように設定されてなるとしている。
【００２１】
ちなみに、このスリーブ７自体の螺条欠落部１ｅからの抜け落ちは、螺条欠落部１ｅを形成することで言わば不使用部となる残部１ｆの上端で係止されて阻止されるとしている。
【００２２】
なお、スリーブ７は、多くの場合に、金属管で形成されるであろうが、その機能するところを考慮すると、合成樹脂製とされるとしても良く、合成樹脂製とする場合には、廉価にしていたずらなコストの上昇を回避でき、また、彩色の如何によっては、視認性を向上させ得ることになるなどの点で有利となる。
【００２３】
一方、下方ばね受８は、図示する実施の形態では、前記した従来の場合の下方ばね受５と固定ナット６とをあたかも一体にした構成とされている。
【００２４】
すなわち、この下方ばね受８は、上端側を形成する本体部８ａと下端側を形成するスカート部８ｂとを有してなる。
【００２５】
そして、本体部８ａは、懸架ばね３の下端を担持しながら螺状部１ａに回動操作可能に螺合してなり、スカート部８ｂは、本体部８ａの下端から下方に向けて延在される筒状に形成されている。
【００２６】
このとき、スカート部８ｂは、スリーブ７の外周との間に隙間を有しながら、スリーブ７の外周側に配在され、下端が前記した高さ位置表示目盛７ａに照準し得るように設定されてなるとしている。
【００２７】
それゆえ、以上のように構成されたこの発明による油圧緩衝器にあっては、螺状部１ａに螺装されている下方ばね受８を回動操作することで、懸架ばね３の下端を昇降させることが可能になる。
【００２８】
このとき、この発明では、下方ばね受８が螺合する螺条部１ａには、前記した従来例の場合のように欠落部分を形成していないから、下方ばね受８を円滑に回動操作し得ることになり、したがって、懸架ばね３のばね力調整を円滑に実行し得ることになる。
【００２９】
また、上下動する下方ばね受８の下端側たるスカート部８ｂの下端位置が照準するスリーブ７の外周における高さ位置表示目盛７ａを確認することで、懸架ばね３のばね力の調整状態を確認できることになる。
【００３０】
なお、下方ばね受８は、これが言わば目一杯下降されても、螺条部１ａのいわゆるエンドがスリーブ７の上端で形成されていることで、螺条部１ａから抜け落ちることはない。
【００３１】
前記したところは、この発明による油圧緩衝器がいわゆる正立型に設定されている場合を例にして説明したが、この発明の意図することろからすれば、油圧緩衝器が倒立型に設定されている場合であってもその具現化が可能になり、その場合の作用効果も異ならないことはもちろんである。
【００３２】
【発明の効果】
以上のように、この発明にあっては、下方ばね受が螺合する螺条部には、いわゆる凹部となって残存する欠落部分を有しないから、凹部となる欠落部分があるがゆえに泥などが詰まる不具合もなく、下方ばね受の円滑な回動操作を恒久的に保障し得えて、懸架ばねのばね力調整を恒久的に円滑に実行し得ることになる。
【００３３】
そして、この発明にあっては、螺状部の一部を欠落してスリーブを介装させるための螺条欠落部を形成するが、この螺条欠落部が環状とされるので、螺条部の螺条欠落部との境界部に発生するいわゆるバリの量が大幅に低減され、したがって、長時間に及ぶバリ撤去の作業が要請されなくなり、生産性の低下を危惧しなくて済むことになる。
【００３４】
また、上下動する下方ばね受の下端側たるスカート部の下端位置が照準するスリーブの外周における高さ位置表示目盛を確認することで、懸架ばねのばね力の調整状態を確認できることになる。
下方ばね受は、これが言わば目一杯下降されても、螺条部のいわゆるエンドがスリーブの上端で形成されていることで、螺条部から抜け落ちることはない。即ち、懸架ばねのばね力をいわゆるソフトにするために、下方ばね受を言わば目一杯下降させるとしても、螺条部のいわゆるエンドがスリーブの上端で形成されているから、不注意な回動操作をしても下方ばね受が螺条部から抜け落ちることを危惧する必要がないことになる。
【００３５】
さらに、この発明にあっては、スリーブが合口を有していて復元力を有しながら拡径可能に形成されてなるとするから、このスリーブを螺条欠落部に介装する作業が容易になるのはもちろんのこと、スリーブを交換することが可能になり、たとえば、ライダの好みでカラフルなスリーブにするなどが可能になる。
【００３６】
その結果、この発明によれば、懸架ばねのばね力を調整するための作動性能を保障し得るのはもちろんのこと、生産性の低下の危惧がなくして、製品コストの低廉化に寄与し、その汎用性の向上を期待するのに最適となる利点がある。
【図面の簡単な説明】
【図１】この発明による油圧緩衝器を示す正面図である。
【図２】図１の油圧緩衝器における要部を一部破断して示す拡大正面図である。
【図３】従来例としての油圧緩衝器を図１と同様に示す図である。
【符号の説明】
１ シリンダ体
１ａ 螺条部
１ｅ 螺条欠落部
１ｆ 残部
２ ピストンロッド
３ 懸架ばね
４ 上方ばね受
７ スリーブ
７ａ 高さ位置表示目盛
８ 下方ばね受
８ａ 本体部
８ｂ スカート部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hydraulic shock absorber, and more particularly to an improvement of a hydraulic shock absorber capable of adjusting a spring force of a suspension spring.
[0002]
[Prior art]
For example, as in the case of a hydraulic shock absorber used as a rear cushion unit of a motorcycle, in many hydraulic shock absorbers, a piston rod that is inserted into and retracted from a cylinder body is inserted into a cylinder by a suspension spring. It is said that it is energized in the direction protruding from the body.
[0003]
At this time, some hydraulic shock absorbers are set so that the spring force of the suspension spring can be adjusted according to the condition of the road surface on which the motorcycle is traveling, or according to liking preference.
[0004]
There are various proposals for adjusting the spring force of the suspension spring. For example, in the hydraulic shock absorber shown in FIG. 3, the suspension spring is lifted by moving the lower end position of the suspension spring up and down. The spring force of the spring is adjusted.
[0005]
That is, in the hydraulic shock absorber shown in FIG. 3, the upper end of the suspension spring 3 that urges the piston rod 2 that is inserted into the cylinder body 1 so as to protrude and retract from the cylinder body 1 is the piston rod. 2 is held by an upper spring receiver 4 held at the upper end of 2 and supported by a lower spring receiver 5 whose lower end of a suspension spring 3 is interposed in a threaded portion 1a formed on the outer periphery of the cylinder body 1 so as to be movable up and down. It is supposed to be done.
[0006]
Incidentally, in the illustrated case, the lower spring receiver 5 is supported from below by a fixing nut 6 that is rotatably mounted on the screw-shaped portion 1a. It is going to be moved.
[0007]
On the other hand, the screw-like portion 1a has a strip-like screw missing portion 1b extending in the vertical direction of the lower spring receiver 5, that is, in the vertical direction. In 1b, the height position display scale 1c having the correlation distance at equal intervals is formed by engraving or the like.
[0008]
Therefore, in this hydraulic shock absorber, the lower spring receiver 5 can be moved up and down by rotating the fixing nut 6 screwed on the screw portion 1a. The spring force can be adjusted, and at this time, the adjustment state of the spring force of the suspension spring 3 can be confirmed by confirming the position where the lower end position of the fixing nut 6 is aimed at the height position indication scale 1c. become.
[0009]
[Problems to be solved by the invention]
However, the above-described hydraulic shock absorber may be pointed out to have the following problems.
[0010]
That is, in the hydraulic shock absorber described above, the thread missing portion 1b for marking the height position indication scale 1c is formed by cutting the thread portion 1a into a strip shape. A so-called burr is generated at the edge 1d that becomes the boundary between the thread 1a and the thread missing part 1b.
[0011]
Therefore, the work to completely remove this burr becomes essential, but at this time, since the burr is generated for each pitch forming the threaded portion 1a, the amount increases, and the removal work takes time, There is a problem that makes it difficult to improve productivity.
[0012]
Further, since the thread missing part 1b is recessed as compared with the threaded part 1a, it becomes easy to clog mud etc. when used in an on-vehicle state. When the rotation operation of 6 is difficult or severe, there is a concern that the rotation of the fixing nut 6 may be disabled.
[0013]
The present invention was devised in view of the above-mentioned circumstances, and the object of the present invention is to ensure the operational performance for adjusting the spring force of the suspension spring, as well as the productivity. The objective is to provide a hydraulic shock absorber that is most suitable for reducing the cost of products and reducing the cost of the products and expecting to improve their versatility.
[0014]
[Means for Solving the Problems]
In order to achieve the above-described object, a suspension spring for urging the structure of the hydraulic shock absorber according to the present invention basically in a direction in which a piston rod inserted into and retracted from the cylinder body projects from the cylinder body. The lower end of the suspension spring is carried by a lower spring bearing that is rotatably mounted on a threaded portion formed on the outer periphery of the cylinder body. In the hydraulic shock absorber, an annular thread missing part is formed on the outer periphery of the cylinder body below the threaded part, and a sleeve is interposed on the outer periphery of the thread missing part. A height position display scale having equal correlation distances is formed, and the lower spring support is screwed to the outer periphery of the screw portion so as to be vertically movable, and extends downward from the main body portion. The skirt part The lower end of the isolation portion in accordance with a screwing position of the body portion hydraulic shock absorber for causing aimed to the height position indication scale [0015]
And, in the above-described configuration, more specifically, when the sleeve has a joint and is formed so as to be able to expand the diameter while having a restoring force, and when the sleeve is interposed in the thread missing portion, It is assumed that it is set so as to function as a stopper for a lower spring receiver that descends while rotating along with the screw-shaped portion.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
In the following, the present invention will be described based on the illustrated embodiment. However, as shown in FIG. 1, even in the hydraulic shock absorber according to the present invention, basically the conventional one shown in FIG. The configuration is the same as that of a hydraulic shock absorber.
[0017]
Therefore, in the illustrated embodiment, where the configuration is the same as that of the hydraulic shock absorber shown in FIG. In the following, the description will focus on the features of the present invention.
[0018]
That is, the hydraulic shock absorber according to one embodiment of the present invention is configured to project the piston rod 2 inserted into the cylinder body 1 so as to be able to protrude and retract from the cylinder body 1 as shown in FIGS. The upper end of the energizing suspension spring 3 is locked to the upper spring receiver 4 held at the upper end of the piston rod 2, and the lower end of the suspension spring 3 is rotatable to a screw-like portion 1 a formed on the outer periphery of the cylinder body 1. It is carried by a lower spring receiver 8 that is screwed into the lower spring receiver 8.
An annular thread missing part 1 e is formed on the outer periphery of the cylinder body 1 below the threaded part 1 a, and a sleeve 7 is interposed on the outer periphery of the thread missing part 1 e. The height position display scale 7a having the correlation distances at equal intervals is formed on the outer peripheral surface 7.
Further, the lower spring receiver 8 is composed of a main body portion 8a screwed to the outer periphery of the screw portion 1a so as to be movable up and down, and a skirt portion 8b extending downward from the main body portion 8a. The lower end of the portion 8b is aimed at the height position display scale 7a according to the screwing position of the main body portion 8a.
[0019]
In the illustrated embodiment, the sleeve 7 has a joint (not shown) and is formed so as to be able to expand its diameter while having a restoring force, and is formed on the outer peripheral surface by stamping or the like. Thus, the height position display scale 7a having equal intervals as the correlation distance is provided.
[0020]
The sleeve 7 is set so as to function as a stopper for the lower spring receiver 8 that descends while rotating along with the threaded portion 1a when the sleeve 7 is interposed in the thread missing portion 1e. It is said.
[0021]
Incidentally, the fall of the sleeve 7 itself from the thread missing portion 1e is prevented by being locked at the upper end of the remaining portion 1f which is a non-use portion by forming the thread missing portion 1e.
[0022]
In many cases, the sleeve 7 will be formed of a metal tube. However, in consideration of its function, the sleeve 7 may be made of a synthetic resin. Thus, it is possible to avoid an unnecessarily high cost, and it is advantageous in that the visibility can be improved depending on the coloring.
[0023]
On the other hand, in the illustrated embodiment, the lower spring receiver 8 is configured as if the lower spring receiver 5 and the fixing nut 6 in the conventional case are integrated.
[0024]
That is, the lower spring receiver 8 has a main body portion 8a that forms the upper end side and a skirt portion 8b that forms the lower end side.
[0025]
The main body 8a is threadably engaged with the threaded portion 1a while supporting the lower end of the suspension spring 3, and the skirt portion 8b extends downward from the lower end of the main body 8a. It is formed in a cylindrical shape.
[0026]
At this time, the skirt portion 8b is arranged on the outer peripheral side of the sleeve 7 with a gap between the outer periphery of the sleeve 7 and is set so that the lower end can be aimed at the height position indication scale 7a. It is supposed to become.
[0027]
Therefore, in the hydraulic shock absorber according to the present invention configured as described above, the lower spring receiver 8 screwed to the screw-shaped portion 1a is rotated to move the lower end of the suspension spring 3 up and down. It becomes possible to make it.
[0028]
At this time, in the present invention, since the threaded portion 1a to which the lower spring receiver 8 is screwed does not have a missing portion as in the case of the conventional example described above, the lower spring receiver 8 is smoothly rotated. Therefore, the spring force adjustment of the suspension spring 3 can be executed smoothly.
[0029]
Also, the adjustment state of the spring force of the suspension spring 3 is confirmed by checking the height position display scale 7a on the outer periphery of the sleeve 7 where the lower end position of the skirt portion 8b on the lower end side of the lower spring receiver 8 moving up and down is aimed. It will be possible.
[0030]
Even if the lower spring receiver 8 is lowered to the full extent, the so-called end of the threaded portion 1a is formed at the upper end of the sleeve 7, so that it does not fall out of the threaded portion 1a.
[0031]
In the above description, the case where the hydraulic shock absorber according to the present invention is set to the so-called upright type has been described as an example. However, according to the intention of the present invention, the hydraulic shock absorber is set to the inverted type. Of course, the realization is possible, and the function and effect in that case are not different.
[0032]
【The invention's effect】
As described above, according to the present invention, the threaded portion into which the lower spring support is screwed does not have a missing portion that remains as a so-called recess, and therefore there is a lacking portion that becomes a recess, so mud etc. Therefore, the smooth rotation operation of the lower spring support can be guaranteed permanently, and the spring force adjustment of the suspension spring can be executed permanently and smoothly.
[0033]
And in this invention, a part of the screw-like part is missing and a screw missing part for interposing the sleeve is formed, but since this screw missing part is annular, the threaded part Thus, the amount of so-called burrs generated at the boundary with the thread missing portion is greatly reduced, so that a long-time burring removal operation is not required, and there is no need to worry about a decrease in productivity.
[0034]
Moreover, the adjustment state of the spring force of the suspension spring can be confirmed by confirming the height position indication scale on the outer periphery of the sleeve aimed at the lower end position of the skirt portion that is the lower end side of the lower spring receiver that moves up and down.
Even if the lower spring support is lowered to the full extent, the so-called end of the thread portion is formed at the upper end of the sleeve, so that it does not fall out of the thread portion. That is, in order to make the spring force of the suspension spring so-called soft, even if the lower spring support is lowered to the full extent, the so-called end of the thread portion is formed at the upper end of the sleeve, so careless rotation operation If this is done, there is no need to worry that the lower spring support will fall out of the threaded portion.
[0035]
Further, according to the present invention, since the sleeve has an abutment and is formed so as to be able to expand its diameter while having a restoring force, it is easy to interpose the sleeve in the thread missing portion. Of course, the sleeve can be exchanged, for example, a colorful sleeve according to the rider's preference.
[0036]
As a result, according to the present invention, the operational performance for adjusting the spring force of the suspension spring can be ensured, as well as there is no risk of a decrease in productivity, contributing to a reduction in product cost. There is an advantage that is optimal for expecting the improvement of the versatility.
[Brief description of the drawings]
FIG. 1 is a front view showing a hydraulic shock absorber according to the present invention.
FIG. 2 is an enlarged front view showing a main part of the hydraulic shock absorber shown in FIG.
FIG. 3 is a view showing a hydraulic shock absorber as a conventional example similarly to FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylinder body 1a Thread part 1e Thread missing part 1f Remaining part 2 Piston rod 3 Suspension spring 4 Upper spring receiver 7 Sleeve 7a Height position indication scale 8 Lower spring receiver 8a Body part 8b Skirt part

Claims (1)

シリンダ体に対して出没可能に挿通されるピストンロッドをシリンダ体から突出させる方向に附勢する懸架ばねの上端がピストンロッドの上端に保持された上方ばね受に係止されると共に懸架ばねの下端がシリンダ体の外周に形成の螺状部に回動可能に螺装された下方ばね受に担持されてなる油圧緩衝器において、螺状部より下側のシリンダ体外周に環状の螺条欠落部を形成し、この螺条欠落部の外周にスリーブを介装させ、また、このスリーブの外周面に相関距離を等間隔とする高さ位置表示目盛を形成させ、上記下方ばね受を上記螺状部の外周に上下移動自在に螺合した本体部と、この本体部から下方に向けて延設したスカート部とで構成し、上記スカート部の下端を上記本体部の螺合位置に応じて上記の高さ位置表示目盛に照準させることを特徴とする油圧緩衝器The upper end of the suspension spring that urges the piston rod inserted into the cylinder body so as to protrude from the cylinder body is locked to the upper spring support held by the upper end of the piston rod and the lower end of the suspension spring Is a hydraulic shock absorber that is supported by a lower spring bearing that is rotatably mounted on a threaded portion formed on the outer periphery of the cylinder body, and an annular thread missing portion on the outer periphery of the cylinder body below the threaded portion. The sleeve is interposed on the outer periphery of the thread missing portion, and the height position indicating scale having the correlation distance at equal intervals is formed on the outer peripheral surface of the sleeve. And a skirt portion extending downward from the main body portion, and the lower end of the skirt portion according to the screwing position of the main body portion. It is aiming for a height position indication scale Hydraulic shock absorber according to claim bets
JP02469199A 1999-02-02 1999-02-02 Hydraulic shock absorber Expired - Fee Related JP3953670B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP02469199A JP3953670B2 (en) 1999-02-02 1999-02-02 Hydraulic shock absorber

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Application Number Priority Date Filing Date Title
JP02469199A JP3953670B2 (en) 1999-02-02 1999-02-02 Hydraulic shock absorber

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JP3953670B2 true JP3953670B2 (en) 2007-08-08

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US11690746B2 (en) 2004-04-02 2023-07-04 Applied Biokinetics Llc Pre-cut adhesive supports for anatomical support, pain reduction, or therapeutic treatment
JP2008223845A (en) * 2007-03-12 2008-09-25 Applied Power Japan Kk Calibrated jack having protection cover

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