JPS629044A - Air return type shock absorber - Google Patents

Air return type shock absorber

Info

Publication number
JPS629044A
JPS629044A JP14838985A JP14838985A JPS629044A JP S629044 A JPS629044 A JP S629044A JP 14838985 A JP14838985 A JP 14838985A JP 14838985 A JP14838985 A JP 14838985A JP S629044 A JPS629044 A JP S629044A
Authority
JP
Japan
Prior art keywords
guide member
actuating rod
rod
shock absorber
transmission rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14838985A
Other languages
Japanese (ja)
Other versions
JPH0355702B2 (en
Inventor
Hiroyoshi Anzai
安斎　宏義
Hidenori Sugano
秀則 菅野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Seiki KK
Original Assignee
Fuji Seiki KK
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 Fuji Seiki KK filed Critical Fuji Seiki KK
Priority to JP14838985A priority Critical patent/JPS629044A/en
Publication of JPS629044A publication Critical patent/JPS629044A/en
Publication of JPH0355702B2 publication Critical patent/JPH0355702B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • 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
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic

Landscapes

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

Abstract

PURPOSE:To enable control of a return timing, by a method wherein a guide member, formed with a cylinderical body, being open at both ends, is threadedly joined with a screw part in the outer periphery of a body, and a transmission rod, being slidable and coupled with an actuating rod, is placed to the interior of the guide member. CONSTITUTION:A screw part 11 is formed in the outer periphery of a body 1, and an actuating rod 2 is reciprocatively inserted in the interior thereof. A guide member 3 is formed with a hollow cylindrical body having both open ends, and the guide member can be threadedly joined with the body 1 by means of a female screw part 32 formed in the inner wall of the guide member. And an air flow hole 31, extended through the outer periphery of the guide member to the vicinity of the inner end of the female screw 32, is bored. A transmission rod 4, slidably inserted in a play in the guide member 3 and a part of which is movable in and out from the opening of the guide member 3 and reciprocably located, is coupled to the actuating rod 2 through a coupling pin 5.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、各種機械における可動部の停止用または移送
物体の停止用として用いられるショックアブソーバの改
良に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to improvements in shock absorbers used for stopping moving parts or moving objects in various machines.

〈従来例および問題点〉 従来この種のショックアブソーバは、流体室を持つ本体
と外力を受け止める作動ロッドとを基本的に有しており
、機械の可動部や物体からの外力を、その作動ロッドの
先端部において受け止め、液体または気体の粘性抵抗お
よび速度の二乗抵抗により衝突物体の移動エネルギーを
吸収して物体をソフトに停止させるものである。<Conventional Examples and Problems> Conventionally, this type of shock absorber basically has a main body with a fluid chamber and an operating rod that receives external force. It absorbs the moving energy of the colliding object through the viscous resistance of the liquid or gas and the squared resistance of the velocity, and gently brings the object to a stop.

この場合に、往復動する作動ロッドを外力が作用する前
の位置に復帰させる手段として、本体内にスプリング（
Ｓ）を装着するスプリングリターン方式（第３図）、ま
たは作動ロッドの反対側の本体端部にエアシリンダ（１
００）とピストン（１１０）を取付は該ピストンに作動
ロッドを連結するエアリターン方式（第４図）が知られ
ている。In this case, a spring (
(Fig. 3), or an air cylinder (1) attached to the end of the body opposite the operating rod.
An air return method (FIG. 4) is known in which a piston (110) and a piston (110) are connected to each other by connecting an operating rod to the piston.

しかるに、前者の方法によると、復帰時に作動ロッド（
１３０）に作用するスプリングの力が、外力の消滅後た
だちに生じて停止した物体を押し戻す反力となり、設定
した位置に物体停止できないことが多い。特に、物体が
フリーフロ一方式の移動物にあっては停止後の逆行防止
ストッパ等の別途機構を必要としている。However, according to the former method, the actuating rod (
The spring force acting on 130) becomes a reaction force that is generated immediately after the external force disappears and pushes back the stopped object, and the object often cannot be stopped at the set position. In particular, if the object is a free-flow type moving object, a separate mechanism such as a stopper to prevent back movement after stopping is required.

一方、後者の方法によると、作動ロッド（＋：１０）の
復帰のタイミングをエアシリンダ（１００）の作動コン
トロールにより任意に調節できるが、作動ロッド（１３
０）に連結されるピストンロッド（１２０）が本体内に
挿通されるので、精密なシール部材を余分に必要とし、
しかも可動部分であるため流体漏れの原因を増やすこと
になる。On the other hand, according to the latter method, the timing of return of the actuating rod (+:10) can be adjusted arbitrarily by controlling the operation of the air cylinder (100).
Since the piston rod (120) connected to 0) is inserted into the main body, an extra precision sealing member is required.
Moreover, since it is a moving part, the cause of fluid leakage increases.

さらに、両者に共通の欠点として、次の点が問題となっ
ている。Furthermore, the following problems are common to both.

すなわち、往復動する作動ロッド（１３０）の軸心方向
に対して外力の作用方向が一致するときには問題がない
が、その作用方向が厳密に規制されないもの、例えばフ
リーフロ一方式の移送物体のような場合には、作動ロッ
ド先端への衝突角度にバラ付きが多くなる。That is, there is no problem when the direction of action of the external force coincides with the axial direction of the reciprocating actuating rod (130), but there is no problem when the direction of action is not strictly regulated, such as a free-flow one-way transfer object. In this case, the angle of impact on the tip of the actuating rod will vary widely.

この衝突による外力の作用角度が、作動ロッドの適正な
往復動の方向すなわち軸心方向とは異る角度（以下、「
偏角塵」という）であると、作動ロッドには曲げモーメ
ントの応力が作用し、作動ロッドの屈曲変形をもたらし
て往復動が不可能となったり作動ロッドと流体室とのシ
ール部分に破損を来したりしてショックアブソーバとし
ての作動が不良となる原因となっていた。The angle at which the external force acts due to this collision is different from the direction of proper reciprocating motion of the actuating rod, that is, the axial direction (hereinafter referred to as "
If the dust is deviated, a bending moment stress will act on the actuating rod, causing bending deformation of the actuating rod, making it impossible to reciprocate or damaging the seal between the actuating rod and the fluid chamber. This caused the shock absorber to malfunction.

特に、小型のショックアブソーバにあっては作動ロフト
も細いため、偏角塵での外力作用に対して耐久性が弱い
ものとなっていた。In particular, small-sized shock absorbers have a narrow operating loft, making them less durable against external force exerted by declination dust.

く問題点を解決するための手段〉 本発明は、上記の欠点を除去するために提案されたもの
であり、その目的は、作動ロッドの復帰タイミングをコ
ントロールできるエアリターン方式を採用しつつ、本体
内で作動ロッドに連結することのない、すなわち余分な
シール構造を必要としないショックアブソーバを提供す
ることにある。Means for Solving the Problems> The present invention was proposed to eliminate the above-mentioned drawbacks, and its purpose is to adopt an air return method that can control the return timing of the operating rod, and to An object of the present invention is to provide a shock absorber that is not connected to an operating rod within the shock absorber, that is, does not require an extra seal structure.

本発明の他の目的は、作動ロッドに対する曲げモーメン
トの外力作用を防止し得るショックアブソーバを提供す
ることにある。Another object of the present invention is to provide a shock absorber that can prevent external bending moments from acting on the actuating rod.

本発明の更に他の目的は、作動ロッドのストローク長を
調節することのできるショックアブソーバを提供するこ
とにある。Still another object of the present invention is to provide a shock absorber in which the stroke length of the actuating rod can be adjusted.

本発明の更に他の目的は、設定した作動ロッドの最大ス
トローク長以外の外力が作用しないように外力を規制す
ることのできるショックアブソーバを提供することにあ
る。Still another object of the present invention is to provide a shock absorber that can restrict external forces so that external forces other than the set maximum stroke length of the actuating rod do not act on the shock absorber.

上記本発明の目的は「本体外方に突出して往復動可能な
作動ロヅド外力を受け止めるように設けたエアリターン
式ショックアブソーバにおいて、該本体の外周に形成し
たネジ部と、両端を開口した中空の筒状体であって、そ
の内壁に螺合用の酸ネジ部を有するとともＯご、外周面
から内壁に貫通するエア通孔を有し該酸ネジ部において
上記本体と螺合可能に設けられたガイド部材と、該ガイ
ド部材内に摺動可能に遊挿されてその一部がガイド部材
の外方に出没可能に設けられるとともに、連結部材を介
して上記作動ロフトに連結される伝達ロッドと、からな
り、ガイド部材内に供給されるエア圧により作動ロッド
と伝達ロッドを復帰し得るように設けてなるエアリター
ン式ショックアブソーバ」によって達成される。The purpose of the present invention is to provide an air return type shock absorber that protrudes outward from the main body and is provided to receive the external force of an actuating rod capable of reciprocating movement. It is a cylindrical body, and has a threaded part for screwing on its inner wall, and has an air hole penetrating from the outer circumferential surface to the inner wall, and is provided so that it can be screwed into the main body at the threaded part. a transmission rod that is slidably and loosely inserted into the guide member so that a portion of the guide member can protrude and retract from the outside of the guide member, and that is connected to the operating loft via a connecting member; This is achieved by an air return type shock absorber which is provided with an air return type shock absorber which is configured such that the actuating rod and the transmission rod can be returned to their original positions by air pressure supplied into the guide member.

〈実施例〉 次に、本発明を第１．２図に示された 一実施例に従って、更に詳しく説明することとする。<Example> Next, the present invention is shown in FIG. 1.2. A more detailed explanation will be given according to one embodiment.

（１）は内部に密封した液体の粘性抵抗を利用するエア
リターン式のショックアブソーバ本体であり、その外周
にはネジ部（１１）が設けられている。（２）は該本体
（１）の一端部から内部に往復動可能に挿入された作動
ロッド。（２１）は該作動ロッド（２）の先端付近に貫
通形成されたビン孔。（３）はガイド部材であり、両端
を開口した中空の筒状体に形成され、その内壁に形成し
た酸ネジ部（３２）において本体（１）に螺合可能とさ
れているとともに、その外周から酸ネジ部（３２）の内
端付近に貫通するエア通孔（３１）が穿設されている。(1) is an air return type shock absorber body that utilizes the viscous resistance of a liquid sealed inside, and a threaded portion (11) is provided on its outer periphery. (2) is an actuating rod inserted into the main body (1) from one end thereof so as to be able to reciprocate. (21) is a bottle hole formed through the vicinity of the tip of the actuating rod (2). (3) is a guide member, which is formed into a hollow cylindrical body with both ends open, and is capable of being screwed into the main body (1) at a threaded portion (32) formed on its inner wall, and its outer periphery. An air hole (31) penetrating through the acid threaded portion (32) is provided near the inner end thereof.

（４）は伝達ロッドであり、ガイド部材（３）内に摺動
可能に遊挿されかつその一部がガイド部材（３）の開口
部において出没して往復動可能に設けられている。Reference numeral (4) denotes a transmission rod, which is slidably inserted loosely into the guide member (3), and a portion of which is provided in the opening of the guide member (3) so that it can reciprocate.

（４１）は伝達ロッド（４）の適所に穿設されたビン孔
であり、作動ロッドのビン孔（２１）より僅かに小径と
されている。（５）は連結ビンであり、僅かにテーバ状
に形成されている。（６）は本体（１）のネジ部（１１
）に螺合して任意の位置でロックするためのナツトであ
る。Reference numeral (41) denotes a pin hole drilled at a suitable location in the transmission rod (4), and has a slightly smaller diameter than the pin hole (21) in the actuating rod. (5) is a connecting bottle, which is formed into a slightly tapered shape. (6) is the threaded part (11) of the main body (1).
) is a nut that can be screwed into and locked in any position.

第２図には上記の各構成部材を組み立てたものが示され
ている。この組立において、連結ビン（５）をビン孔（
４１）に圧入しつつ作動ロッドのビン孔（２１）に挿通
することにより、作動ロッド（２）と伝達ロッド（４）
を連結する。而して、連結ビン（５）はビン孔（２１）
よりも小径であるので、作動ロッド（２）は僅かな自由
度を以って連結されており、常態において伝達ロッド（
４）はその先端部付近をガイド部材（３）の外方に突出
して対象物の衝突を待つ姿勢をとる。図中、（７）は伝
達ロッド（４）の侵入ストロークの限界を規制するため
にガイド部材（３）の内面に装着されたリング状のスト
ッパである。尚、該連結ビン（５）を割りビン構造とす
ること、又は連結ビンを用いずに作動ロッド（２）を伝
達ロッド（４）に直接ネジ込む等により公知の手段で連
結すること、は本発明に含まれる実施例である。FIG. 2 shows an assembly of the above-mentioned components. In this assembly, connect the connecting bottle (5) to the bottle hole (
By inserting the actuating rod into the bottle hole (21) while press-fitting it into the actuating rod (2) and the transmission rod (4),
Concatenate. Therefore, the connecting bottle (5) is connected to the bottle hole (21).
Because it has a smaller diameter than the transmission rod (
4) assumes a position in which the vicinity of its tip protrudes outward from the guide member (3) and waits for a collision with an object. In the figure, (7) is a ring-shaped stopper attached to the inner surface of the guide member (3) in order to limit the limit of the intrusion stroke of the transmission rod (4). Note that it is not acceptable to make the connecting bottle (5) have a split bottle structure, or to connect the operating rod (2) to the transmission rod (4) by a known means such as directly screwing it into the transmission rod (4) without using a connecting bottle. This is an example included in the invention.

ここで、対象物（Ｗ）または（Ｗ′）か伝達部材（４）
の矢印方向から頂部に衝突すると、その外力を受けて伝
達ロッｌ−’（４）は下方に摺動し、作動ロッド（２）
を押圧してこれを押し下げる。このとき、伝達ロッド（
４）はガイド部材（３ンによって摺動方向が常に作動ロ
ッド（２）の軸心方向に一致するようにガイドされるの
で、対象物（Ｗｏ）のように偏角度で衝突することによ
って伝達ロッド（４）に生じる曲げモーメントは作動ロ
ッド（２）に伝達されることがない。Here, the object (W) or (W') or the transmission member (4)
When it collides with the top from the direction of the arrow, the transmission rod (4) slides downward under the external force, and the actuating rod (2)
Press to push this down. At this time, the transmission rod (
4) is guided by the guide member (3) so that the sliding direction always coincides with the axial direction of the actuating rod (2), so the transmission rod is The bending moment occurring at (4) is not transmitted to the actuating rod (2).

しかも、この実施例においては、伝達 ロッド（４）と作動ロッド（２）とが連結ビン（４１）
を介して、僅かな自由度を以って連結されているので、
偏角度衝突による曲げモーメントは作動ロッド（２）へ
全く影響することがない。Moreover, in this embodiment, the transmission rod (4) and the actuation rod (2) are connected to the connecting pin (41).
Since they are connected with a small degree of freedom through
The bending moment due to the angular collision has no effect on the actuating rod (2).

従って、対象物の衝突姿勢に関係なく作動ロッド（２）
には軸心方向への押圧力のみが作用するので、作動ロッ
ド（２）の屈曲変形や、本体内のシール構造に対して悪
影響を及ぼす応力を発生することなく、適正な往復運動
が保証されるものである。Therefore, regardless of the collision attitude of the object, the actuating rod (2)
Since only the pressing force in the axial direction acts on the actuating rod (2), proper reciprocating motion is guaranteed without bending or deforming the actuating rod (2) or causing stress that has an adverse effect on the seal structure within the main body. It is something that

また、ガイド部材（３）と本体（１）との螺合位置を調
節することにより、伝達ロッド（４）の突出長すなわち
伝達ロッド（４）のストローク長を作動ロッド（２）の
ストローク長よりも短くすることができる。ナツト（６
）はこの螺合位置を確実に保持ロックするためのもので
ある。この調節により、過大な外力を伴う対象物の衝突
があっても、該対象物はガイド部材（３）の頂端部によ
ってストップされ、それ以上伝達ロッド（４）を押圧す
ることがない。従って、ガイド部材（３）は作動ロッド
（２）および本体（１）の内部機構の破損・や変形を防
止する機能をも併存している。In addition, by adjusting the screwing position between the guide member (3) and the main body (1), the protrusion length of the transmission rod (4), that is, the stroke length of the transmission rod (4) can be made shorter than the stroke length of the actuating rod (2). can also be made shorter. Natsuto (6
) is for securely holding and locking this screwed position. With this adjustment, even if an object collides with an excessive external force, the object will be stopped by the top end of the guide member (3) and will not press the transmission rod (4) any further. Therefore, the guide member (3) also has the function of preventing damage and deformation of the internal mechanisms of the actuating rod (2) and the main body (1).

次いで、停止された対象物（Ｗ）または（Ｗ”）が移送
機構（図示せず）等により他所へ移動せしめられた後、
エア通孔（３１）より適宜の圧力でエアをガイド部材（
３）内に供給すると、伝達ロッド（４）が押し上げられ
第２図に示す位置に復帰し、次ぎの対象物の衝突を待つ
姿勢となる。Next, after the stopped object (W) or (W'') is moved to another location by a transfer mechanism (not shown) or the like,
The guide member (
3), the transmission rod (4) is pushed up and returns to the position shown in FIG. 2, taking the position of waiting for the next object to collide.

く効　果〉 本発明によれば、前記の目的をよく達成し得るとともに
、既存のショックアブソーバへの取付は通用も容易であ
って利用性に富むほか、機構が簡単で安価に製造できる
メリットもある。Effects> According to the present invention, the above-mentioned objects can be well achieved, and in addition to being easy to install on existing shock absorbers and having high usability, the present invention also has the advantage that the mechanism is simple and can be manufactured at low cost. be.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例に係るショックアブソーバの
組立分解斜視図、第２図はその使用状態を示す中央縦断
面図、第３図はスプリング復帰方式による従来例を示す
一部断面正面図、第４図はエアシリンダ方式による従来
例を示す中央縦断面図である。 （１）　　−−−−−本　　体 （２）　−・・−作動ロフト （３）　−−−−−−ガイド部材 （４）−−−一　伝達ロッド （５）　−−−−−−連結ビン （３１）　−−−−−−エア通孔Fig. 1 is an exploded perspective view of a shock absorber according to an embodiment of the present invention, Fig. 2 is a central vertical cross-sectional view showing its usage state, and Fig. 3 is a partially sectional front view showing a conventional example using a spring return method. FIG. 4 is a central vertical sectional view showing a conventional example using an air cylinder system. (1) -------Main body (2) -... -Operating loft (3) -------Guide member (4) ----1 Transmission rod (5) -------Connection bin (31) --------Air vent

Claims (1)

【特許請求の範囲】 １、本体外方に突出して往復動可能な作動 ロッドにより外力を受け止めるように設け たエアリターン式ショックアブソーバにお いて、 該本体の外周に形成したネジ部と、 両端を開口した中空の筒状体であって、 その内壁に螺合用の雌ネジ部を有するとと もに、外周面から内壁に貫通するエア通孔 を有し、該雌ネジ部において上記本体と螺 合可能に設けられたガイド部材と、 該ガイド部材内に摺動可能に遊挿されて その一部がガイド部材の外方に出没可能に 設けられるとともに、連結部材を介して上 記作動ロッドに連結される伝達ロッドと、 からなり、ガイド部材内に供給されるエア 圧により作動ロッドと伝達ロッドを復帰し 得るように設けてなるエアリターン式ショックアブソー
バ。[Scope of Claims] 1. An air return type shock absorber that is provided to receive external force by an actuating rod that protrudes outward from the main body and is movable reciprocally, the threaded portion formed on the outer periphery of the main body and both ends being open. It is a hollow cylindrical body, and has a female threaded part for screwing on its inner wall, has an air hole penetrating from the outer peripheral surface to the inner wall, and is provided at the female threaded part so that it can be screwed into the main body. a transmission rod that is slidably inserted loosely into the guide member so that a portion of the guide member can protrude and retract from the outside of the guide member, and that is connected to the actuating rod via a connecting member; , An air return type shock absorber is provided in which the operating rod and the transmission rod can be returned to their original positions by air pressure supplied into the guide member.
JP14838985A 1985-07-08 1985-07-08 Air return type shock absorber Granted JPS629044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14838985A JPS629044A (en) 1985-07-08 1985-07-08 Air return type shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14838985A JPS629044A (en) 1985-07-08 1985-07-08 Air return type shock absorber

Publications (2)

Publication Number Publication Date
JPS629044A true JPS629044A (en) 1987-01-17
JPH0355702B2 JPH0355702B2 (en) 1991-08-26

Family

ID=15451678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14838985A Granted JPS629044A (en) 1985-07-08 1985-07-08 Air return type shock absorber

Country Status (1)

Country Link
JP (1) JPS629044A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07257590A (en) * 1994-03-15 1995-10-09 Yamagata Gravure:Kk Tag with hook for display of commodity such as socks and production thereof
KR20030048344A (en) * 2001-12-12 2003-06-19 아르투로 살리세 에스.피.에이. Air damper for mobile furniture parts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07257590A (en) * 1994-03-15 1995-10-09 Yamagata Gravure:Kk Tag with hook for display of commodity such as socks and production thereof
KR20030048344A (en) * 2001-12-12 2003-06-19 아르투로 살리세 에스.피.에이. Air damper for mobile furniture parts

Also Published As

Publication number Publication date
JPH0355702B2 (en) 1991-08-26

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