JP3192124B2 - Coil spring connection structure - Google Patents
Coil spring connection structureInfo
- Publication number
- JP3192124B2 JP3192124B2 JP34313298A JP34313298A JP3192124B2 JP 3192124 B2 JP3192124 B2 JP 3192124B2 JP 34313298 A JP34313298 A JP 34313298A JP 34313298 A JP34313298 A JP 34313298A JP 3192124 B2 JP3192124 B2 JP 3192124B2
- Authority
- JP
- Japan
- Prior art keywords
- coil spring
- pair
- coil springs
- coil
- connection structure
- 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.)
- Expired - Fee Related
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
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
- F16F1/122—Attachments or mountings where coils, e.g. end coils, of the spring are rigidly clamped or similarly fixed
-
- 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
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
- F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、長い寸法のコイル
スプリング体を、一括成型によって構成しなくても、複
数のコイルスプリングを連結することで提供できるよう
にするコイルスプリング連結構造に関し、更に詳しく
は、同軸芯上に配置する一対のコイルスプリングの端部
それぞれに内嵌自在な一対の内嵌部を備えた連結具を設
け、前記内嵌部に外嵌状態の前記一対のコイルスプリン
グ端部どうしが前記軸芯方向に沿って相対離間するのを
阻止自在な一対の離間阻止部を、前記内嵌部に設け、前
記一対の内嵌部に前記一対のコイルスプリングの端部を
各別に外嵌する状態に連結してあるコイルスプリング連
結構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil spring connecting structure which can provide a long coil spring body by connecting a plurality of coil springs without having to construct the coil spring body by a single molding. Is provided with a coupling tool having a pair of inner fitting portions that can be fitted inside each of the pair of coil springs disposed on a coaxial core, and the pair of coil spring end portions in an outer fitting state with the inner fitting portion. A pair of separation preventing portions, which are capable of preventing relative separation from each other along the axial direction, are provided on the inner fitting portion, and the ends of the pair of coil springs are separately attached to the pair of inner fitting portions. The present invention relates to a coil spring connection structure connected in a fitted state.
【０００２】[0002]
【従来の技術】従来、この種のコイルスプリング連結構
造としては、図９に示すように、連結具２０を円柱形状
に形成し、前記内嵌部２１の外周部には、前記コイルス
プリング１が螺合自在な螺旋溝２２を形成してあり、前
記螺旋溝２２に対して、前記コイルスプリング１端部を
ねじ込んで螺合する状態に連結してあった。2. Description of the Related Art Conventionally, as a coil spring connecting structure of this kind, as shown in FIG. 9, a connecting member 20 is formed in a cylindrical shape, and the coil spring 1 is provided on an outer peripheral portion of the inner fitting portion 21. A spiral groove 22 which can be screwed is formed, and the end of the coil spring 1 is screwed into the spiral groove 22 so as to be screwed.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来のコイル
スプリング連結構造によれば、前記螺旋溝とコイルスプ
リング端部との螺合によって相互の連結が成されている
から、ボルトナットに見られる雄ねじ・雌ねじの螺合に
類した連結構造となり、互いの螺合を確実なものとする
には、コイルスプリングの螺旋形状と、前記連結具の螺
旋溝の形状とが、互いによく噛み合うように、前記コイ
ルスプリング・螺旋溝をそれぞれ精度良く形成する必要
があった。例えば、コイルスプリングに腐食防止用樹脂
コーティングを施すような場合、コイル線の直径がコー
ティングによって増加し、前記螺旋溝とコイルスプリン
グとが噛み合い難くなって外れやすくなるから、前記螺
旋溝のピッチや深さを修正する必要があり、全般的に、
部品形成に手間がかかりやすいといった問題があった。According to the above-described conventional coil spring connection structure, since the mutual connection is made by screwing the spiral groove and the end of the coil spring, the male screw seen in the bolt and nut is formed. A connection structure similar to the screwing of the female screw, and in order to ensure mutual screwing, the helical shape of the coil spring and the shape of the helical groove of the connecting tool are well engaged with each other, It was necessary to form the coil spring and the spiral groove with high precision. For example, when a resin coating for preventing corrosion is applied to the coil spring, the diameter of the coil wire increases due to the coating, and the spiral groove and the coil spring are difficult to mesh with each other and are easily disengaged. Need to be fixed, and in general,
There is a problem that it takes time and effort to form parts.
【０００４】従って、本発明の目的は、上記問題点を解
消し、部品の寸法精度が多少低かったにしても、外れ難
い状態に連結することが可能なコイルスプリング連結構
造を提供するところにある。Accordingly, it is an object of the present invention to provide a coil spring connection structure which can solve the above-mentioned problems and can be connected in a state in which the components are hardly disengaged even if the dimensional accuracy of the components is somewhat low. .
【０００５】[0005]
【課題を解決するための手段】請求項１の発明の特徴構
成は、図１・２・７・８に例示するごとく、同軸芯Ｘ上
に配置する一対のコイルスプリング１の端部それぞれに
内嵌自在な一対の内嵌部３を備えた連結具２を設け、前
記内嵌部３に外嵌状態の前記一対のコイルスプリング１
端部どうしが前記軸芯Ｘ方向に沿って相対離間するのを
阻止自在な一対の離間阻止部４を、前記内嵌部３に設
け、前記一対の内嵌部３に前記一対のコイルスプリング
１の端部複数巻きが囲繞する状態にそれぞれ外嵌させて
連結してあるコイルスプリング連結構造において、前記
離間阻止部４を、前記連結具２の長手方向における中央
側ほど小径で、平滑面からなるテーパ部Ｔ１・Ｔ２で構
成し、前記テーパ部Ｔ１・Ｔ２に外嵌する複数巻きの前
記コイルスプリング１部分を、端部側ほど螺旋径を小径
に形成してあるところにある。請求項１の発明の特徴構
成によれば、両コイルスプリングに前記軸芯方向に沿っ
た引っ張り力が作用した場合、前記テーパ部にコイルス
プリング端部の先細り部分が押し当たり、前記テーパ部
が両コイルスプリング端部をそれぞれ受け止めてそれ以
上離間するのを阻止することができる。このテーパ部と
コイルスプリングとの嵌合は融通性が高いから、前記テ
ーパ部のテーパ角とコイルスプリング端部のテーパ角と
が多少異なっているような場合や、例えば、コイルスプ
リングに腐食防止用樹脂コーティングを施してコイル線
の太さが増加した結果コイル内径が減少するような場合
であっても、両コイルスプリングどうしを繋ぎ止めるこ
とが可能となる。従って、部品加工を必要以上に精密に
実施しなくても、両コイルスプリングどうしを強力に連
結しておくことが可能となり、材料加工上の手間を少な
くし、より原価低減化を図ることが可能となる。また、
前記テーパ部が、平滑面で構成してあるから、テーパ部
とコイルスプリング端部の内周面との接当状態において
も、テーパ部の平滑面に沿って互いの接当部分どうしの
多少の相対移動が許容され、両コイルスプリングどうし
の揺動を許容した状態に連結することが可能となる。コ
イルスプリングは、曲げ外力が作用した場合、単体にお
いてはその軸芯が円弧形状になるように変形可能である
が、前述した従来の連結構造によれば、少なくとも、連
結具部分は直線状態のまま固着されるから、両コイルス
プリングの連結体は、曲げ外力に対して不自然な形状に
変形することになる。この意味において、当該発明構成
によれば、連結具部分でのコイルスプリングの支持状態
が多少の揺動を許容できるから、両コイルスプリングの
連結体全体とした屈曲変形形状を、一本のコイルスプリ
ングの屈曲変形形状により近づいた自然なものとするこ
とが可能となる。従って、コイルスプリングや連結具の
局部に応力が集中するのを緩和し易くなり、部品耐久性
を向上させることが可能となる。According to a first aspect of the present invention, as shown in FIGS. 1, 2, 7, and 8, the end portions of a pair of coil springs 1 disposed on a coaxial core X are respectively provided. A coupling tool (2) having a pair of inner fitting portions (3) that can be fitted is provided, and the pair of coil springs (1) in an outer fitting state on the inner fitting portion (3).
A pair of separation preventing portions 4 that can prevent end portions from being relatively separated from each other along the axis X direction are provided on the inner fitting portion 3, and the pair of coil springs 1 are provided on the pair of inner fitting portions 3. In the coil spring connection structure in which a plurality of windings of the end portion are fitted around each other so as to surround them, the separation preventing portion 4 has a smooth surface with a smaller diameter toward the center in the longitudinal direction of the connecting tool 2. The coil spring 1 is composed of the tapered portions T1 and T2, and has a plurality of turns that are externally fitted to the tapered portions T1 and T2. . According to the characteristic configuration of the first aspect of the present invention, when a pulling force is applied to both coil springs along the axial direction, the tapered portion of the end of the coil spring presses against the tapered portion, and the tapered portion is pressed by both ends. The end portions of the coil springs can be respectively received to prevent further separation. Since the fitting between the tapered portion and the coil spring has high flexibility, the tapered angle of the tapered portion may be slightly different from the tapered angle of the end of the coil spring. Even if the inner diameter of the coil is reduced as a result of increasing the thickness of the coil wire by applying the resin coating, the two coil springs can be held together. Therefore, it is possible to connect both coil springs firmly without performing component processing more precisely than necessary, thereby reducing the time and labor required for material processing and reducing costs. Becomes Also,
Since the tapered portion is formed of a smooth surface, even in the contact state between the tapered portion and the inner peripheral surface of the end portion of the coil spring, the contact portion between the tapered portion and the inner peripheral surface of the coil spring has a slight difference. Relative movement is allowed, and the two coil springs can be connected in a state where swinging is allowed. When an external bending force is applied, the coil spring can be deformed so that the axis of the coil spring becomes an arc shape. However, according to the above-described conventional connection structure, at least the connection part remains in a linear state. Since they are fixed, the connected body of the two coil springs is deformed into an unnatural shape against external bending force. In this sense, according to the configuration of the present invention, since the support state of the coil spring at the connecting part can allow some swinging, the bending deformation shape of the entire connected body of the two coil springs is changed to one coil spring. It is possible to obtain a more natural shape closer to the bent deformation shape. Therefore, it is easy to alleviate the concentration of the stress on the coil spring and the local portion of the connecting member, and it is possible to improve the durability of the parts.
【０００６】[0006]
【０００７】請求項２の発明の特徴構成は、図２・７・
８に例示するごとく、前記連結具２が、一方のコイルス
プリング１Ａに対応した第一連結部材Ｓ１と、他方のコ
イルスプリング１Ｂに対応した第二連結部材Ｓ２とを備
えて構成してあり、両連結部材Ｓ１・Ｓ２どうしを着脱
自在に形成してあるところにある。請求項３の発明の特
徴構成によれば、請求項１の発明による作用効果を叶え
ることができるのに加えて、前記連結具を、着脱自在な
第一連結部材と第二連結部材とを備えて構成してあるこ
とによって、連結具とコイルスプリングとの着脱操作を
簡単に実施することができるようになる。即ち、一方の
コイルスプリングに前記第一連結部材を内嵌させると共
に、他方のコイルスプリングに前記第二連結部材を内嵌
させ、後は、第一連結部材と第二連結部材とを連結操作
するだけの簡単な操作によって両コイルスプリングを連
結することが可能となる一方、両コイルスプリングどう
しの連結を絶って分割しようする場合には、上の手順と
は逆に、前記第一連結部材と第二連結部材とを外すこと
で簡単に両コイルスプリングを分離することが可能とな
る。従って、請求項１の発明による作用効果を叶える上
においても、より簡単な操作によって実現できるように
なる。[0007] The characteristic structure of the invention of claim 2 is shown in FIG.
As illustrated in FIG. 8, the connecting tool 2 includes a first connecting member S1 corresponding to one coil spring 1A and a second connecting member S2 corresponding to the other coil spring 1B. The connecting members S1 and S2 are formed to be detachable. According to the characteristic configuration of the third aspect of the invention, in addition to the effects of the first aspect of the invention, the coupling tool includes a detachable first coupling member and a second coupling member. With such a configuration, the attachment and detachment operation of the coupling tool and the coil spring can be easily performed. That is, the first connection member is internally fitted to one of the coil springs, and the second connection member is internally fitted to the other coil spring. Thereafter, the first connection member and the second connection member are connected. It is possible to connect the two coil springs by only a simple operation, but if the connection between the two coil springs is to be cut off, the first connecting member and the second By removing the two connecting members, both coil springs can be easily separated. Therefore, in order to achieve the functions and effects according to the first aspect of the present invention, it is possible to realize the functions and operations with simpler operations.
【０００８】請求項３の発明の特徴構成は、図８に例示
するごとく、前記両連結部材Ｓ１・Ｓ２は、連結状態に
おいて前記軸芯Ｘ周りに相対回転自在に構成してあると
ころにある。請求項３の発明の特徴構成によれば、請求
項２の発明による作用効果を叶えることができるのに加
えて、前記連結具を介して連結されている両コイルスプ
リングどうしを、軸芯周りに相対回転自在に連結するこ
とが可能となる。コイルスプリングは、線材を螺旋形状
に成形して構成してある関係上、圧縮力や引っ張り力が
作用して伸縮変形する際には、コイルスプリングの両端
部分が軸芯周りに逆方向に回転する状態にコイルスプリ
ング全体が捻れることになる。従って、連結対象の一対
のコイルスプリングが同じ巻き方向に形成してある場合
には、両コイルスプリングの連結体に圧縮力や引っ張り
力が作用するのに伴って、前記連結具との連結部分に捻
れ応力が集中的に作用する危険性が高い。その結果、連
結具とコイルスプリングとが擦れてコイルスプリングの
劣化の原因となる危険性がある。従って、本発明構成に
よれば、両コイルスプリングの連結体に圧縮力や引っ張
り力が作用する場合に、前記捻れ力を両連結部材の相対
回転によって吸収することが可能となり、連結部に応力
集中するのを防止でき、コイルスプリングの弾性変形を
スムースにサポートすることが可能となる。その結果、
連結具とコイルスプリングとの擦れを抑制し、劣化が過
度に生じるのを防止することが可能となる。A characteristic feature of the third aspect of the present invention is that, as illustrated in FIG. 8, the two connecting members S1 and S2 are configured to be relatively rotatable around the axis X in a connected state. According to the characteristic configuration of the third aspect of the invention, in addition to achieving the effect of the second aspect of the invention, the two coil springs connected via the connecting tool are moved around the axis. It is possible to connect them so that they can rotate relative to each other. Because the coil spring is formed by shaping the wire into a spiral shape, when the compressive force or the tensile force acts and expands and contracts, both ends of the coil spring rotate in opposite directions around the axis. The whole coil spring is twisted in the state. Therefore, when a pair of coil springs to be connected are formed in the same winding direction, a compressive force or a pulling force acts on a connected body of the two coil springs, so that a connecting portion with the connecting tool is formed. There is a high risk that torsional stress acts intensively. As a result, there is a danger that the coupling tool and the coil spring will rub against each other and cause deterioration of the coil spring. Therefore, according to the configuration of the present invention, when a compressive force or a tensile force acts on the connected body of the two coil springs, the torsional force can be absorbed by the relative rotation of the two connecting members, and the stress concentration on the connecting portion Can be prevented, and the elastic deformation of the coil spring can be smoothly supported. as a result,
It is possible to suppress the friction between the coupling tool and the coil spring and prevent excessive deterioration.
【０００９】請求項４の発明の特徴構成は、図２・７・
８に例示するごとく、前記両テーパ部Ｔ１・Ｔ２によっ
て引き寄せられる前記両コイルスプリング１は、その端
部どうしが押し当たる状態に連結してあるところにあ
る。請求項４の発明の特徴構成によれば、請求項２の発
明による作用効果を叶えることができるのに加えて、前
記両テーパ部によって前記両コイルスプリングが離間す
るのを阻止した状態に連結できながら、圧縮力が作用し
た場合には、両コイルスプリングの端部を介して応力が
伝達され、両コイルスプリングの連結体への伸縮力に対
して、ガタつき難い状態で安定した変形を叶えることが
可能となる。つまり、前記テーパ部に外嵌する前記コイ
ルスプリングの端部が伸縮できる状態（バネ線素材どう
しが密着する状態に巻かれた密着巻きではなく、バネ線
素材どうしが間隔があくように巻かれた螺旋巻き状態）
に形成してある場合には、圧縮力が作用するに伴って、
前記テーパ部に外嵌するコイルスプリング１の端部もコ
イルスプリングの一般部分と同様に弾性的に収縮するこ
とが可能となり、コイルスプリング連結体とした弾性変
形を期待することが可能となる。The feature of the invention of claim 4 is shown in FIGS.
As illustrated in FIG. 8, the two coil springs 1 drawn by the two tapered portions T1 and T2 are connected so that their ends are pressed against each other. According to the characteristic configuration of the fourth aspect of the invention, in addition to the effect of the second aspect of the invention, it is possible to connect the two coil springs in a state where the two coil springs are prevented from separating from each other. However, when a compressive force is applied, the stress is transmitted through the ends of both coil springs, and stable deformation can be achieved in a state in which there is little play against the expansion and contraction force of the two coil springs to the connected body. Becomes possible. In other words, the end of the coil spring that is fitted to the tapered portion can be expanded and contracted (not a tightly wound wire in which the spring wire materials are tightly fitted to each other, but the spring wire materials are wound so as to be spaced apart from each other. Spirally wound)
When it is formed, as the compressive force acts,
The end of the coil spring 1 fitted to the outside of the tapered portion can also be elastically contracted similarly to the general portion of the coil spring, and it is possible to expect elastic deformation as a coil spring connection body.
【００１０】尚、上述のように、図面との対照を便利に
するために符号を記したが、該記入により本発明は添付
図面の構成に限定されるものではない。[0010] As described above, the reference numerals are used for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.
【００１１】[0011]
【発明の実施の形態】以下に本発明の実施の形態を図面
に基づいて説明する。尚、図面において従来例と同一の
符号で表示した部分は、同一又は相当の部分を示してい
る。Embodiments of the present invention will be described below with reference to the drawings. In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.
【００１２】図１は、一対のコイルスプリング１を連結
具２によって一体連結して構成した連結体Ｓを示すもの
である。当該連結体Ｓは、コイルスプリングが一般的に
使用される公知の用途に使用することができるものであ
る。FIG. 1 shows a connecting member S formed by integrally connecting a pair of coil springs 1 with a connecting member 2. The connecting body S can be used for a known use in which a coil spring is generally used.
【００１３】前記コイルスプリング１は、前記連結具２
の一端側に位置する一方のコイルスプリング１Ａ、及
び、他端側に位置する他方のコイルスプリング１Ｂ共に
同様の鋼を使用し、且つ、同様形状（又は、ほぼ同様）
に形成してある。コイルスプリング１の形状は、図２に
示すように、連結側の端部部分Ｋ１は、端部側ほど螺旋
径を小径に、即ち、先すぼまり形状に形成し、且つ、他
の一般部分Ｋ２より螺旋ピッチを小さく設定して構成し
てある。尚、前記一般部分Ｋ２については、螺旋径は、
何れの部分も一定、又は、ほぼ一定に形成してあり、当
然のことながら、長手方向に沿って弾性変形自在に構成
してある。また、連結側の端面部は、両コイルスプリン
グ１Ａ・１Ｂどうしが面接当できるように、前記コイル
スプリング１の軸芯Ｘに対する垂直面に沿った平滑面に
切削加工してある。The coil spring 1 is connected to the coupling 2
The same coil spring 1A located on one end side and the other coil spring 1B located on the other end side use the same steel and have the same shape (or almost the same).
It is formed in. As shown in FIG. 2, the shape of the coil spring 1 is such that the end portion K1 on the connection side has a smaller spiral diameter toward the end side, that is, a tapered shape, and has another general portion. The helical pitch is set smaller than K2. The spiral diameter of the general portion K2 is:
Each portion is formed to be constant or almost constant, and is naturally elastically deformable along the longitudinal direction. Further, the end surface on the connection side is cut into a smooth surface along a plane perpendicular to the axis X of the coil spring 1 so that the two coil springs 1A and 1B can come into surface contact with each other.
【００１４】前記連結具２は、図２〜４に示すように、
一方のコイルスプリング１Ａに対応した第一連結部材Ｓ
１と、他方のコイルスプリング１Ｂに対応した第二連結
部材Ｓ２と、これら両連結部材Ｓ１・Ｓ２とを連結する
ボルトナットＮとを備えて構成してあり、両連結部材Ｓ
１・Ｓ２どうしは、前記ボルトナットＮで連結すること
で一体に組み付けられる。前記両連結部材Ｓ１・Ｓ２の
合わせ部分には、第一連結部材Ｓ１に嵌合凸部５を形成
すると共に、第二連結部材Ｓ２に前記嵌合凸部５と嵌合
自在な嵌合凹部６を形成してある。そして、この嵌合凸
部５と嵌合凹部６とは、互いが嵌合することで、両連結
部材Ｓ１・Ｓ２どうしの前記軸芯Ｘ周りの相対回転を阻
止できるように周壁部に平面部５ａ・６ａを設けて構成
してある。また、両連結部材Ｓ１・Ｓ２には、前記軸芯
Ｘに沿ってボルト貫通穴７を形成してあり、このボルト
貫通孔７にボルトＮ１を挿通してナットＮ２を螺着して
締め付けることによって両連結部材Ｓ１・Ｓ２どうしを
固着連結することが可能となる。尚、前記ナットＮ２
は、弛み留め効果の高いダブルナットを使用してある。
一方、両連結部材Ｓ１・Ｓ２を組み付けた状態の前記連
結具２は、前記一対のコイルスプリング１の端部部分Ｋ
１それぞれに内嵌自在な一対の内嵌部３でその外周部を
構成してある。この内嵌部３は、図２に示すように、前
記連結具２の中央側ほど小径に形成した一対のテーパ部
Ｔ１・Ｔ２と、この両テーパ部Ｔ１・Ｔ２間にあって前
記コイルスプリング１の最小内径寸法と同寸法（又は、
ほぼ同寸法）の外径寸法に形成された円筒部Ｔ３とで構
成してある。尚、前記テーパ部Ｔ１・Ｔ２の最大外径寸
法は、前記コイルスプリング１の一般部分Ｋ２の内径寸
法と同寸法（又は、ほぼ同寸法）に形成してあり、前記
コイルスプリングの一般部分Ｋ２の端部開口から前記連
結部材を挿入して内嵌させることができるように構成し
てある。そして、前記内嵌部３に、上述のテーパ部Ｔ１
・Ｔ２を設けてあることによって、前記内嵌部３に外嵌
状態の前記一対のコイルスプリング１端部どうしが前記
軸芯Ｘ方向に沿って相対離間するのが阻止され、両コイ
ルスプリング１を確実に連結することが可能となってい
る。前記一対のテーパ部Ｔ１・Ｔ２をもって離間阻止部
４が構成してある。また、一対のテーパ部Ｔ１・Ｔ２及
び円筒部Ｔ３の表面は、それぞれ平滑面に形成してあ
り、前記連結体Ｓに曲げ力が作用する場合に、前記平滑
面と、外嵌するコイルスプリング１とが僅かに摺動する
ことが可能となる（図６参照）。その結果、曲げ力が作
用して連結体Ｓが弓形に弾性変形する際に、コイルスプ
リング部分と同様に前記連結具内嵌部分でも円弧形状に
近い状態に変形できるようになる。[0014] As shown in Figs.
First connecting member S corresponding to one coil spring 1A
1 and a second connecting member S2 corresponding to the other coil spring 1B, and a bolt and nut N for connecting the two connecting members S1 and S2.
1 · S2 are assembled together by connecting them with the bolt and nut N. In the mating portion of the two connecting members S1 and S2, a fitting convex portion 5 is formed on the first connecting member S1 and a fitting concave portion 6 which is fittable with the fitting convex portion 5 is formed on the second connecting member S2. Is formed. The fitting convex portion 5 and the fitting concave portion 6 are fitted with each other, so that a relative rotation between the two connecting members S1 and S2 around the axis X can be prevented. 5a and 6a are provided. A bolt through hole 7 is formed in both connecting members S1 and S2 along the axis X, and a bolt N1 is inserted through the bolt through hole 7, and a nut N2 is screwed and tightened. The two connecting members S1 and S2 can be fixedly connected to each other. The nut N2
Uses a double nut that has a high loosening effect.
On the other hand, the connecting member 2 in a state where both connecting members S1 and S2 are assembled is an end portion K of the pair of coil springs 1.
The outer peripheral portion is constituted by a pair of inner fitting portions 3 which can be fitted inside each of them. As shown in FIG. 2, the inner fitting portion 3 has a pair of tapered portions T1 and T2 formed to have smaller diameters toward the center of the connecting member 2, and is located between the two tapered portions T1 and T2, Same dimensions as inner diameter (or
(Substantially the same size). The maximum outer diameter of the tapered portions T1 and T2 is formed to be the same (or substantially the same) as the inner diameter of the general portion K2 of the coil spring 1, and the maximum outer diameter of the general portion K2 of the coil spring 1. It is configured such that the connecting member can be inserted and fitted inside from the end opening. Then, the tapered portion T1 described above is attached to the inner fitting portion 3.
The provision of T2 prevents the ends of the pair of coil springs 1 externally fitted to the inner fitting portion 3 from being relatively separated from each other along the axis X direction. It is possible to connect securely. The separation preventing portion 4 is constituted by the pair of tapered portions T1 and T2. The surfaces of the pair of tapered portions T1 and T2 and the cylindrical portion T3 are formed as smooth surfaces, respectively, and when a bending force is applied to the connecting body S, the coil spring 1 is fitted to the smooth surface. Can slide slightly (see FIG. 6). As a result, when the connecting body S is elastically deformed into an arc shape due to the bending force, the fitting inside the connecting tool can be deformed to a shape close to an arc shape similarly to the coil spring portion.
【００１５】次に、当該連結体Ｓの組立手順について説
明する。 ［１］ 一対のコイルスプリング１それぞれに、一般部
分Ｋ２端部の開口部から、前記両連結部材Ｓ１・Ｓ２を
スプリング内空部に各別に挿入する（図５（イ）参
照）。その際、両連結部材Ｓ１・Ｓ２それぞれのテーパ
部Ｔ１・Ｔ２が、前記コイルスプリング１の端部部分Ｋ
１の先すぼまり形状の内周面に当接する状態にセットす
る。 ［２］ 両コイルスプリング１を、同一軸芯Ｘ上で前記
両連結部材Ｓ１・Ｓ２が対向する状態に配置し、両連結
部材Ｓ１・Ｓ２の嵌合凸部５・嵌合凹部６どうしを嵌合
させる（図５（ロ）参照）。その際、係合凸部５の平面
部５ａと、係合凹部６の平面部６ａとが当接する状態に
嵌め合わせる。 ［３］ 両連結部材Ｓ１・Ｓ２のボルト貫通孔７にボル
トＮ１を挿通すると共に、前記ナットＮ２を螺合させて
締め付けることによって、両連結部材Ｓ１・Ｓ２が引き
寄せられ、それに伴って両コイルスプリング１どうしも
引き寄せられて端面どうしが押し当たる状態に連結する
ことができ、前記連結体Ｓが構成される（図５（ハ）参
照）。Next, the procedure for assembling the connector S will be described. [1] The two connecting members S1 and S2 are individually inserted into the pair of coil springs 1 from the openings at the ends of the general portion K2 into the inner space of the springs (see FIG. 5A). At this time, the tapered portions T1 and T2 of the two connecting members S1 and S2 are respectively connected to the end portions K of the coil spring 1.
1 is set so as to be in contact with the inner peripheral surface of the tapered shape. [2] The two coil springs 1 are arranged on the same axis X in a state where the two connecting members S1 and S2 face each other, and the fitting protrusions 5 and the fitting recesses 6 of the two connecting members S1 and S2 are fitted. (See FIG. 5B). At this time, the flat portion 5a of the engaging convex portion 5 and the flat portion 6a of the engaging concave portion 6 are fitted so as to be in contact with each other. [3] By inserting the bolt N1 into the bolt through hole 7 of both connecting members S1 and S2 and screwing and tightening the nut N2, the two connecting members S1 and S2 are drawn together, and accordingly both coil springs 1 can be connected to each other so that the end faces are pressed against each other, and the connected body S is configured (see FIG. 5C).
【００１６】〔別実施形態〕以下に他の実施の形態を説
明する。[Another Embodiment] Another embodiment will be described below.
【００１７】〈１〉 前記テーパ部Ｔ１・Ｔ２は、先の
実施形態で説明した平滑面に構成してあるものに限るも
のではなく、例えば、ローレット加工等によってテーパ
部Ｔ１・Ｔ２全体に凸凹を形成したもの、或いは、テー
パ部Ｔ１・Ｔ２周方向に沿った凸凹又は溝を形成したも
の、或いは、テーパ傾斜方向に沿った凸凹又は溝を形成
したもの等であってもよい。更には、所謂テーパネジに
よって構成してあってもよい。また、テーパ部Ｔ１・Ｔ
２の形状は、単なる曲面で構成してあるものに限るもの
ではなく、図７に示すように、球面形状に形成してあっ
てもよい。この実施形態によれば、球面形状のテーパ部
Ｔ１・Ｔ２に沿ってコイルスプリング１の端部部分Ｋ１
が摺動し得る連結構造となるので、連結部分へ揺動機能
を付加することが可能となり、連結体Ｓ全体とした屈曲
変形を滑らかな形状にすることが可能となる。従って、
連結体Ｓの局部的な応力集中を回避し易くなり、耐久性
の低下防止を図ることが可能となる。 〈２〉 前記連結具２は、先の実施形態で説明したよう
に第一連結部材Ｓ１と第二連結部材Ｓ２を取り付け・取
り外し自在に構成してあるものに限るものではなく、例
えば、取り付けのみ許す構成とするものであってもよ
い。また、両連結部材Ｓ１・Ｓ２どうしは、図８に示す
ように、軸芯Ｘ周りに相対回転自在に取り付ける構成を
とることも可能である。この実施形態においては、両連
結部材Ｓ１・Ｓ２の摺動面どうしを滑らかに形成し、相
対回転の障害とならないように構成してあると共に、両
連結部材Ｓ１・Ｓ２どうしは、ピンＰによって連結して
ある。この構成によって、連結体Ｓに作用する捻り力を
両連結部材Ｓ１・Ｓ２の相対回転によって吸収すること
が可能となる。<1> The tapered portions T1 and T2 are not limited to those having the smooth surface described in the above embodiment. For example, the entire tapered portions T1 and T2 may be uneven by knurling or the like. It may be formed, or formed with irregularities or grooves along the circumferential direction of the tapered portions T1 and T2, or formed with irregularities or grooves along the taper inclination direction. Further, it may be constituted by a so-called tapered screw. In addition, the tapered portion T1 · T
The shape 2 is not limited to a simple curved surface, but may be a spherical shape as shown in FIG. According to this embodiment, the end portion K1 of the coil spring 1 extends along the tapered portions T1 and T2 of the spherical shape.
Has a slidable connecting structure, so that a swinging function can be added to the connecting portion, and the bending deformation of the entire connecting body S can be made smooth. Therefore,
It is easy to avoid local stress concentration of the connecting body S, and it is possible to prevent a decrease in durability. <2> The connecting tool 2 is not limited to the one in which the first connecting member S1 and the second connecting member S2 are configured to be attachable / detachable as described in the above embodiment. A configuration that allows it may be used. Further, as shown in FIG. 8, the two connecting members S1 and S2 may be configured to be attached so as to be relatively rotatable around the axis X. In this embodiment, the sliding surfaces of both connecting members S1 and S2 are formed smoothly so as not to hinder relative rotation, and both connecting members S1 and S2 are connected by pins P. I have. With this configuration, it is possible to absorb the torsional force acting on the connecting body S by the relative rotation of the two connecting members S1 and S2.
【図１】コイルスプリングの連結状況を示す縦断面図FIG. 1 is a longitudinal sectional view showing a connection state of a coil spring.
【図２】連結部分を示す縦断面図FIG. 2 is a longitudinal sectional view showing a connecting portion.
【図３】連結部分を示す横断面図FIG. 3 is a cross-sectional view showing a connecting portion.
【図４】連結部材を示す分解斜視図FIG. 4 is an exploded perspective view showing a connecting member.
【図５】コイルスプリングの連結手順を示す説明図FIG. 5 is an explanatory view showing a connection procedure of a coil spring.
【図６】連結部分を示す縦断面図FIG. 6 is a longitudinal sectional view showing a connecting portion.
【図７】別実施形態の連結構造を示す縦断面図FIG. 7 is a longitudinal sectional view showing a connection structure of another embodiment.
【図８】別実施形態の連結構造を示す縦断面図FIG. 8 is a longitudinal sectional view showing a connection structure of another embodiment.
【図９】従来の連結構造を示す縦断面図FIG. 9 is a longitudinal sectional view showing a conventional connection structure.
１ コイルスプリング １Ａ 一方のコイルスプリング １Ｂ 他方のコイルスプリング ２ 連結具 ３ 内嵌部 ４ 離間阻止部 Ｓ１ 第一連結部材 Ｓ２ 第二連結部材 Ｔ１ テーパ部 Ｔ２ テーパ部 Ｘ 軸芯 DESCRIPTION OF SYMBOLS 1 Coil spring 1A One coil spring 1B The other coil spring 2 Connector 3 Inner fitting part 4 Separation prevention part S1 First connection member S2 Second connection member T1 Tapered part T2 Tapered part X Shaft core
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−243464（ＪＰ，Ａ) 特開 平10−37998（ＪＰ，Ａ) 実公 昭35−12816（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) F16F 1/00 - 6/00 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-243464 (JP, A) JP-A-10-37998 (JP, A) Jiko 35-12816 (JP, Y1) (58) Field (Int.Cl. 7 , DB name) F16F 1/00-6/00
Claims (4)
ングの端部それぞれに内嵌自在な一対の内嵌部を備えた
連結具を設け、前記内嵌部に外嵌状態の前記一対のコイ
ルスプリング端部どうしが前記軸芯方向に沿って相対離
間するのを阻止自在な一対の離間阻止部を、前記内嵌部
に設け、前記一対の内嵌部に前記一対のコイルスプリン
グの端部複数巻きが囲繞する状態にそれぞれ外嵌させて
連結してあるコイルスプリング連結構造であって、 前記離間阻止部を、前記連結具の長手方向における中央
側ほど小径で、平滑面からなるテーパ部で構成し、前記
テーパ部に外嵌する複数巻きの前記コイルスプリング部
分を、端部側ほど螺旋径を小径に形成してあるコイルス
プリング連結構造。1. A pair of coil springs arranged on a coaxial core, each having a pair of coil springs provided with a pair of inner fitting portions that are capable of being internally fitted therein, and the pair of coils being externally fitted to the inner fitting portions. A pair of separation preventing portions that can prevent spring ends from being relatively separated from each other along the axis direction are provided on the inner fitting portion, and the pair of inner fitting portions have a plurality of end portions of the pair of coil springs. A coil spring connection structure in which the windings are fitted around each other so as to surround the windings, wherein the separation preventing portion is formed of a tapered portion having a smaller diameter toward the center in the longitudinal direction of the connecting tool and having a smooth surface. A coil spring coupling structure in which a plurality of turns of the coil spring portion fitted to the tapered portion are formed to have a smaller spiral diameter toward an end.
に対応した第一連結部材と、他方のコイルスプリングに
対応した第二連結部材とを備えて構成してあり、両連結
部材どうしを着脱自在に形成してある請求項１に記載の
コイルスプリング連結構造。2. The connecting device comprises a first connecting member corresponding to one of the coil springs and a second connecting member corresponding to the other of the coil springs. 2. The coil spring connection structure according to claim 1, wherein the coil spring connection structure is formed at a position other than the center.
記軸芯周りに相対回転自在に構成してある請求項２に記
載のコイルスプリング連結構造。3. The coil spring connection structure according to claim 2, wherein the both connection members are relatively rotatable around the axis in a connected state.
前記両コイルスプリングは、その端部どうしが押し当た
る状態に連結してある請求項２に記載のコイルスプリン
グ連結構造。4. The coil spring connection structure according to claim 2, wherein said coil springs attracted by said taper portions are connected such that their ends are pressed against each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34313298A JP3192124B2 (en) | 1998-12-02 | 1998-12-02 | Coil spring connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34313298A JP3192124B2 (en) | 1998-12-02 | 1998-12-02 | Coil spring connection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000170812A JP2000170812A (en) | 2000-06-23 |
| JP3192124B2 true JP3192124B2 (en) | 2001-07-23 |
Family
ID=18359170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34313298A Expired - Fee Related JP3192124B2 (en) | 1998-12-02 | 1998-12-02 | Coil spring connection structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3192124B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101922517B1 (en) * | 2017-03-16 | 2018-11-27 | 김성식 | Cace for roll tissue |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2894006B1 (en) * | 2005-11-30 | 2010-08-27 | Valeo Embrayages | DOUBLE FLYWHEEL SHOCK ABSORBER |
| WO2014115750A1 (en) * | 2013-01-24 | 2014-07-31 | 五光発條株式会社 | Spring assembly |
| CN109058339A (en) * | 2018-08-09 | 2018-12-21 | 湖州杭佳弹簧有限公司 | Spring can be connected with each other |
-
1998
- 1998-12-02 JP JP34313298A patent/JP3192124B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101922517B1 (en) * | 2017-03-16 | 2018-11-27 | 김성식 | Cace for roll tissue |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000170812A (en) | 2000-06-23 |
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