JP3158081B2 - Columns and connection structure of columns - Google Patents

Columns and connection structure of columns

Info

Publication number
JP3158081B2
JP3158081B2 JP18963397A JP18963397A JP3158081B2 JP 3158081 B2 JP3158081 B2 JP 3158081B2 JP 18963397 A JP18963397 A JP 18963397A JP 18963397 A JP18963397 A JP 18963397A JP 3158081 B2 JP3158081 B2 JP 3158081B2
Authority
JP
Japan
Prior art keywords
ring
groove
diameter
outer tube
columnar body
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 - Lifetime
Application number
JP18963397A
Other languages
Japanese (ja)
Other versions
JPH1136285A (en
Inventor
末好 野路
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP18963397A priority Critical patent/JP3158081B2/en
Publication of JPH1136285A publication Critical patent/JPH1136285A/en
Priority to JP2000078706A priority patent/JP3459805B2/en
Application granted granted Critical
Publication of JP3158081B2 publication Critical patent/JP3158081B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、両端部に、内側柱
部と外側管部とを振り分けて設けた柱状体、および、第
一柱状体の一端部と第二柱状体の一端部とに、内側柱部
と外側管部とを振り分けて設け、その内側柱部と外側管
部とを互いに接続した柱状体の接続構造に関し、例え
ば、地すべり抑止杭等を多数の柱状体に分割して設け、
それら多数の柱状体を、使用場所において接続して用い
るような場合に利用される技術に関する。The present invention relates to the both ends, the columnar body provided by distributing the inner side pillar portion and the outer tube section, and, one end and the end portion of the second columnar bodies of the first columnar body in, provided by distributing the inner side pillar portion and the outer tube portion, divides the inside pillar portion and the outer tube portion relates connecting structure of the columnar body connected to each other, for example, a landslide deterrence piles or the like to a number of the columnar body Provided
The present invention relates to a technique used when connecting and using a large number of pillars at a place of use.

【０００２】[0002]

【従来の技術】従来、この種の柱状体および柱状体の接
続構造としては、第一柱状体と第二柱状体とを溶接等に
より接続することが行われているが、このような技術に
よれば、接続に時間を要したり、天候によっては使用場
所において利用できなかったり、あるいは、高度な技術
を要するために、技術者が不足がちになることもあっ
て、簡単に接続するための柱状体および柱状体の接続構
造が望まれている状況がある。そこで、近年、第一柱状
体の一端部と第二柱状体の一端部とに、一対の内側柱部
と外側管部とを振り分けて設け、前記内側柱部に外溝部
を設け、前記外側管部に内溝部を設け、互いに螺合接続
可能に形成し、互いに螺合させることにより接続する柱
状体および柱状体の接続構造が知られている。2. Description of the Related Art Conventionally, as a columnar body of this kind and a connecting structure of the columnar bodies, a first columnar body and a second columnar body are connected by welding or the like. According to the report, it takes a long time to connect, depending on the weather, it is not available at the place of use, or because it requires advanced technology, there is a tendency for technicians to be short, so it is difficult to connect easily. There are situations where a pillar and a connection structure between the pillars are desired. Therefore, in recent years, a pair of inner pillars and an outer pipe are separately provided at one end of the first pillar and one end of the second pillar, and an outer groove is provided in the inner pillar, and the outer pipe is provided. 2. Description of the Related Art There is known a columnar body and a columnar body connection structure in which an inner groove portion is provided in a portion, formed so as to be screwably connected to each other, and connected by screwing each other.

【０００３】[0003]

【発明が解決しようとする課題】ところが、上述した従
来の螺合を用いる技術によれば螺合溝（前記外溝部及び
内溝部）を形成する機械加工は、困難な部類に属し、こ
のような加工を施した柱状体は、高価なものにならざる
を得ず、また、前記柱状体が重量物であるような場合に
は特に、螺合操作に多大な手間を要し、かつ、螺合操作
中等に、前記螺合溝に傷等が発生したりすると、さらに
螺合操作が困難になり、柱状体の使用箇所での作業性に
多大な悪影響を及ぼすことが問題視されている。However, according to the above-mentioned conventional technique using screwing, the machining for forming the screwing grooves (the outer groove and the inner groove) belongs to a difficult class, and such machining is difficult. The processed columnar member is inevitably expensive, and especially when the columnar member is heavy, the screwing operation requires a great deal of labor, and the screwing operation is difficult. If the screw groove is damaged during operation or the like, the screwing operation becomes more difficult, and it is regarded as a problem that the workability at the place of use of the columnar body is greatly adversely affected.

【０００４】従って、本発明の目的は、上記欠点に鑑
み、簡単かつ確実に柱状体同士を連結可能にし、連結作
業性の高い柱状体および柱状体の接続構造を提供するこ
とにある。SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a columnar body and a connection structure for the columnar body, which can easily and surely connect the columnar bodies in view of the above-mentioned drawbacks, and have high connection workability.

【０００５】[0005]

〔作用効果〕(Effects)

本構成のごとく、両端部に、内側柱部と外側管部とを振
り分けて設けて、前記内側柱部と外側管部とを、異なる
柱状体同士の間で嵌合連結可能に構成すると、その柱状
体を長手方向に直列に並べて、その両端部を互いに連結
しながら長尺に接続することが出来る。また、前記内側
柱部の外周面に環状の外溝部を少なくとも１カ所設ける
とともに、前記外側管部の内周面に環状の内溝部を少な
くとも１カ所設け、径変化自在なリング状部材を、前記
外溝部もしくは内溝部の入り口から奥に引退した状態に
収容可能に形成し、前記内側柱部を異なる柱状体の外側
管部に嵌入した状態で、前記リング状部材を、前記外溝
部と前記異なる柱状体の内溝部との両者間にわたって介
在し、その両者に係合状態に保持可能に、前記外溝部も
しくは内溝部のうち、前記リング状部材を収容可能な側
に取り付け、前記外側管部の前記内溝部に、前記外側管
部の内外に連通する貫通孔を設けて、前記リング状部材
を径変化操作する操作部を設けてあると、隣接した柱状
体同士を、互いに嵌合連結したときに、前記リング状部
材が前記外溝部もしくは内溝部の入り口から奥に引退し
た状態に収容された状態で、嵌合操作して、前記内溝部
と外溝部とを互いに対向した状態に配置し、そのリング
状部材を前記操作部から径変化操作させて、前記外溝部
と前記内溝部との両者間にわたって介在した状態にする
ことができる。As in this configuration, the both ends, is provided by distributing the inner side pillar portion and the outer tube portion, and said inner pole portion and the outer tube section, when fitted coupleable configured between between different columnar body, The columnar bodies can be arranged in series in the longitudinal direction, and can be connected to each other long while their both ends are connected to each other. Further, at least one annular outer groove portion is provided on the outer peripheral surface of the inner pillar portion, and at least one annular inner groove portion is provided on the inner peripheral surface of the outer tube portion. The ring-shaped member is formed differently from the outer groove in a state in which the ring-shaped member is formed so as to be able to be accommodated in a state of being retracted to the back from the entrance of the outer groove or the inner groove, and the inner column is fitted into the outer tube of a different column. It is interposed between the inner groove portion of the columnar body and the inner groove portion, and is attached to a side of the outer groove portion or the inner groove portion that can accommodate the ring-shaped member so as to be able to hold the both in an engaged state . In the inner groove portion, the outer tube
Providing a through hole communicating with the inside and outside of the portion, the ring-shaped member
When the operating portion for changing the diameter is provided, when the adjacent columnar bodies are fitted and connected to each other, the ring-shaped member is accommodated in a state of being retreated to the back from the entrance of the outer groove or the inner groove. In the state, the fitting operation is performed, the inner groove portion and the outer groove portion are arranged in a state of facing each other, and the ring-shaped member is operated to change the diameter from the operating portion, and the outer groove portion and the inner groove portion are connected to each other. It can be in a state interposed between both.

【０００６】つまり、構成１に示した柱状体を得るにあ
たって、前記リング状部材を前記外溝部もしくは内溝部
の入り口から奥に引退した状態に収容してあれば、前記
内側柱部を容易に前記外側管部に嵌入させることが出来
る。このとき、前記外側管部の前記内溝部に、前記外側
管部の内外に連通する貫通孔を設けて、前記リング状部
材を径変化操作する操作部を形成しておき、前記内側柱
部を前記外側管部に嵌入させたあと、前記操作部から、
前記リング状部材を径変化操作することが望ま しい。 と
いうのは、一旦前記外側管部に前記内側柱部を嵌入させ
てしまうと、前記リング状部材を、その外側管部の外側
から拡径あるいは縮径させる径変化操作を行うことが困
難な場合が多い。このような場合には、前記外側管部の
内外に連通する貫通孔を設けてあれば、前記外側管部の
外側から前記リング状部材を、拡径あるいは縮径させる
径変化操作を行うことができるようになる。そのため、
前記リング状部材に特殊な細工を施すことなく、前記柱
状体を形成できるようになって、簡単かつ確実に柱状体
を接続するのに役立つ。そのため、簡単操作で当該構成
１に示した確実な柱状体を得ることが出来、現場作業性
が向上するとともに、労力を減少させられ、その労力に
応じた人件費を削減でき、コスト安に前記柱状体を施工
できる。また、前記外溝部及び内溝部を複数設けてあれ
ば、一つの連結構造に対して複数のリング状部材が前記
内側柱部と外側管部とに係合した状態に保持されること
になるから、前記連結構造をより強固に出来る。That is, in obtaining the columnar body shown in the configuration 1, if the ring-shaped member is housed in a state of being retracted from the entrance of the outer groove portion or the inner groove portion, the inner columnar portion can be easily formed. Can be fitted into the outer tube
You. At this time, the outer groove is provided in the inner groove portion of the outer tube portion.
By providing a through hole communicating with the inside and outside of the pipe portion, the ring-shaped portion is provided.
Forming an operation part for changing the diameter of the material,
After fitting the part into the outer tube part, from the operation part,
Arbitrary desired to operate diameter change of the ring-shaped member. When
That is, once the inner pillar portion is fitted into the outer tube portion,
The ring-shaped member is moved outside the outer tube portion.
It is difficult to perform a diameter change operation to increase or decrease the diameter from
Often difficult. In such a case, the outer tube portion
If a through-hole communicating inside and outside is provided,
Increase or decrease the diameter of the ring-shaped member from outside
A diameter changing operation can be performed. for that reason,
Without applying special work to the ring-shaped member, the column
Can be formed easily and reliably.
Help to connect. Therefore, the reliable columnar body shown in the configuration 1 can be obtained by a simple operation, the workability at the site can be improved, the labor can be reduced, the labor cost corresponding to the labor can be reduced, and the cost can be reduced. Columns can be constructed. Further, if a plurality of the outer groove portions and the inner groove portions are provided, a plurality of ring-shaped members are held in a state of being engaged with the inner column portion and the outer tube portion for one connection structure. The connection structure can be further strengthened.

【０００７】〔構成２〕 本発明の柱状体は、請求項２に記載したごとく、Ｃリン
グで前記リング状部材を構成することができる。 〔作用効果〕 本構成のごとく、前記リング状部材がＣリングであり、
そのＣリングを、その付勢力に抗して前記内溝部の奥側
に拡径状態で収容し、その拡径状態を保持する拡径状態
保持部を前記Ｃリングに設け、前記内側柱部を前記外側
管部に嵌入させた状態（以下大径状態と称する）で前記
拡径状態保持部を解除させて前記Ｃリングを縮径操作
し、前記Ｃリングを前記外溝部と前記内溝部との両者間
にわたって介在させて、その両者に係合した状態（以下
係合状態と称する）にするか、もしくは、前記リング状
部材がＣリングであり、そのＣリングを前記内溝部の奥
側に拡径状態で収容し、前記内側柱部を前記外側管部に
嵌入させ、そのＣリングを縮径状態に維持する縮径状態
保持部を作用させて前記Ｃリングを縮径操作して、前記
Ｃリングを前記外溝部と前記内溝部との両者間にわたっ
て介在させて、その両者に係合状態に保持した状態にす
ることが好ましい。つまり、上述の方法を採用すれば、
前記Ｃリングを大径状態で、前記内側柱部を外側管部に
挿入し、前記内溝部に対向する位置に外溝部を位置さ
せ、前記Ｃリングを縮径操作するから、前記Ｃリング
は、その縮径操作により、前記外溝部と前記内溝部との
間に介在した状態に変形させられ、係合状態を形成する
ことが出来る。ここで、前記Ｃリングは、自然状態で前
記大径状態に配置可能なものであっても、前記係合状態
に配置可能なものであっても良く、前者であれば、Ｃリ
ングを自然状態で前記内溝部の奥側に収容した状態にし
て、前記内側柱部を外側管部に挿入したあと、そのＣリ
ングに縮径状態保持部を作用させることによって、前記
係合状態に変形させることができるし、逆に後者であれ
ば、Ｃリングを拡径状態保持部を作用させることによっ
て、前記内溝部の奥側に収容した状態にして、前記内側
柱部を外側管部に挿入したあと、前記拡径状態保持部を
解除して、そのＣリングを自然状態に戻し、前記係合状
態を実現すれば良いのである。このとき、前者の場合に
は、縮径状態保持部により、前記Ｃリングは、係合状態
での形状が安定しやすく、柱状体に振動等の外力がかか
ったとしても、前記Ｃリングが大径状態にもどるような
不都合が起きにくいので、柱状体同士の接続の信頼性が
より一層高くなるし、後者の場合には、前記拡径状態保
持部を前記Ｃリングの付勢力に抗して作用させるのは、
前記外側管部と内側柱部とを接続する前に行うことの出
来る操作であるし、前記拡径状態保持部を解除する操作
は、前記Ｃリングの付勢力に抗する力をほとんど働かせ
ずにすむという点から、前者の場合に言う縮径状態保持
部材を作用させる場合に比べて、操作性が良いという利
点がある。[Structure 2] In the columnar body of the present invention, as described in claim 2, the ring-shaped member can be constituted by a C-ring. [Operation and Effect] As in the present configuration, the ring-shaped member is a C-ring,
The C-ring is accommodated in an enlarged state on the inner side of the inner groove portion against the urging force, and an enlarged-diameter state holding portion for maintaining the enlarged state is provided on the C-ring, and the inner pillar portion is provided. In a state where the outer ring portion is fitted into the outer tube portion (hereinafter, referred to as a large-diameter state), the enlarged-diameter state holding portion is released to reduce the diameter of the C-ring, and the C-ring is moved between the outer groove portion and the inner groove portion. It may be interposed between the two and brought into engagement with the two (hereinafter referred to as the engagement state), or the ring-shaped member may be a C-ring, and the C-ring may be extended deeper into the inner groove. The C-ring is housed in a diameter state, the inner pillar portion is fitted into the outer tube portion, and the C-ring is reduced in diameter by operating a reduced-diameter state holding portion for maintaining the C-ring in a reduced diameter state. A ring is interposed between both the outer groove and the inner groove, It is preferable that the state of being held in engagement in person. In other words, if the above method is adopted,
With the C ring in a large diameter state, insert the inner column portion into the outer tube portion, position the outer groove portion at a position facing the inner groove portion, and reduce the diameter of the C ring. By the diameter-reducing operation, it is deformed into a state interposed between the outer groove and the inner groove, and an engaged state can be formed. Here, the C-ring may be one that can be arranged in the large-diameter state in a natural state or one that can be arranged in the engaged state. After the inner column is inserted into the outer tube, the C-ring is deformed into the engaged state by applying a reduced-diameter state holding portion to the inner column after inserting the inner column into the outer tube. In the case of the latter, on the other hand, after the C ring is housed in the inner groove portion by operating the expanded state holding portion, the inner column portion is inserted into the outer tube portion. Then, it is sufficient to release the expanded state holding portion, return the C ring to the natural state, and realize the engaged state. At this time, in the former case, the shape of the C-ring in the engaged state is easily stabilized by the reduced-diameter state holding portion, and even if an external force such as vibration is applied to the columnar body, the C-ring is large. Since the inconvenience of returning to the diameter state is unlikely to occur, the reliability of connection between the columnar bodies is further increased, and in the latter case, the expanded state holding portion is opposed to the urging force of the C ring. To make it work
This is an operation that can be performed before connecting the outer tube portion and the inner pillar portion, and the operation of releasing the expanded state holding portion is performed with almost no force against the urging force of the C ring. From the point of view, there is an advantage that the operability is better than in the former case in which the reduced diameter state holding member is operated.

【０００８】また、逆に、前記リング状部材がＣリング
であり、そのＣリングを前記外溝部の奥側に縮径状態で
収容し、前記内側柱部を前記外側管部に嵌入させ、その
Ｃリングを拡径状態で保持する拡径状態保持部を作用さ
せて、前記Ｃリングを拡径操作して、前記Ｃリングを前
記外溝部と前記内溝部との両者間にわたって介在して、
その両者に係合状態に保持した状態にするか、もしく
は、前記リング状部材がＣリングであり、そのＣリング
をその付勢力に抗して前記外溝部の奥側に縮径状態で収
容し、その縮径状態を保持する縮径状態保持部を前記Ｃ
リングに設け、前記内側柱部を前記外側管部に嵌入させ
た状態で前記縮径状態保持部を解除させて前記Ｃリング
を拡径操作し、前記Ｃリングを前記外溝部と前記内溝部
との両者間にわたって介在し、その両者に係合状態に保
持した状態にすれば、前記Ｃリングを小径状態で、前記
内側柱部を外側管部に挿入し、前記外溝部に対向する位
置に内溝部を位置させ、前記Ｃリングを拡径操作するか
ら、前記Ｃリングは、その拡径操作により、前記外溝部
と前記内溝部との間に介在した状態に変形させられ、係
合状態を形成することが出来る。ここで、前記Ｃリング
は、自然状態で前記小径状態に配置可能なものであって
も、前記係合状態に配置可能なものであっても良く、前
者であれば、Ｃリングを自然状態で前記外溝部の奥側に
収容した状態にして、前記内側柱部を外側管部に挿入し
たあと、そのＣリングを拡径状態保持部を作用させるこ
とによって、前記係合状態に変形させることができる
し、逆に後者であれば、Ｃリングに縮径状態保持部を作
用させることによって、前記外溝部の奥側に収容した状
態にして、前記内側柱部を外側管部に挿入したあと、前
記縮径状態保持部を解除して、そのＣリングを自然状態
に戻し、前記係合状態を実現すれば良いのである。この
とき、前者の場合には、拡径状態保持部により、前記Ｃ
リングは、係合状態での形状が安定しやすく、柱状体に
振動等の外力がかかったとしても、前記Ｃリングが小径
状態にもどるような不都合が起きにくいので、柱状体同
士の接続の信頼性がより一層高くなるし、後者の場合に
は、前記縮径状態保持部を前記Ｃリングの付勢力に抗し
て作用させるのは、前記外側管部と内側柱部とを接続す
る前に行うことの出来る操作であるし、前記縮径状態保
持部を解除する操作は、前記Ｃリングの付勢力に抗する
力をほとんど働かせずにすむという点から、前者の場合
に言う拡径状態保持部材を作用させる場合に比べて、操
作性が良いという利点がある。Conversely, the ring-shaped member is a C-ring, the C-ring is housed in a reduced diameter state on the inner side of the outer groove, and the inner column is fitted into the outer tube. The C-ring is operated to increase the diameter of the C-ring by operating the expanded-diameter state holding portion that holds the C-ring in the expanded state, and the C-ring is interposed between both the outer groove portion and the inner groove portion,
Either the two members may be held in an engaged state, or the ring-shaped member may be a C-ring, and the C-ring may be housed in a reduced diameter state on the inner side of the outer groove portion against the urging force. The reduced-diameter state holding portion for holding the reduced-diameter state is
Provided in a ring, the diameter reduction operation of the C-ring by releasing the reduced diameter state holding portion in a state where the inner pillar portion is fitted in the outer tube portion, the C-ring the outer groove portion and the inner groove portion. If the C-ring is in a small diameter state, the inner column portion is inserted into the outer tube portion, and the C-ring is inserted into a position facing the outer groove portion. Since the groove is positioned and the diameter of the C-ring is increased, the diameter of the C-ring is deformed by the diameter-expanding operation to a state interposed between the outer groove and the inner groove to form an engagement state. You can do it. Here, the C-ring may be one that can be arranged in the small diameter state in a natural state or one that can be arranged in the engagement state. After inserting the inner pillar portion into the outer tube portion in a state of being housed in the back side of the outer groove portion, the C-ring can be deformed to the engaged state by operating the expanded-diameter state holding portion. If it is the latter, on the other hand, by applying the reduced-diameter state holding portion to the C-ring, the inner column portion is inserted into the outer tube portion in a state in which the C-ring is housed on the inner side of the outer groove portion, It is sufficient to release the reduced diameter state holding portion, return the C ring to the natural state, and realize the engaged state. At this time, in the former case, the C
The shape of the ring is easily stabilized in the engaged state, and even if external force such as vibration is applied to the columnar body, it is unlikely that the C-ring returns to the small diameter state. In the latter case, the reduced-diameter state holding portion acts against the urging force of the C-ring before connecting the outer tube portion and the inner column portion. This is an operation that can be performed, and the operation of releasing the reduced-diameter state holding portion requires little force against the urging force of the C-ring. There is an advantage that operability is good as compared with the case where a member is operated.

【０００９】〔構成３〕 本発明の柱状体は、請求項３に記載したごとく、周方向
に複数に分割してある環状体で前記リング状部材を構成
することができる。 〔作用効果〕 本構成のごとく、前記リング状部材が、周方向に複数に
分割してある環状体であり、前記外側管部の前記内溝部
に、前記外側管部の内外に連通する貫通孔を設けて、前
記リング状部材を径変化操作する操作部を形成してあ
り、前記内溝部に前記環状体を収容した状態で、前記内
側柱部を前記外側管部に嵌入させ、前記リング状部材を
前記操作部から操作して縮径状態にして、前記環状体を
前記外溝部と前記内溝部との両者間にわたって介在し
て、その両者に係合状態に保持した状態にしてもよい。
つまり、前記リング状部材として先のＣリングを用いる
構成に替え、周方向に複数に分割してある環状体で構成
することによっても前記管状体を縮径操作することによ
って大径状態から係合状態に変化させることができ、構
成１記載の柱状体を形成できる。この場合は、前記リン
グ状部材として、Ｃリング等の弾性部材を用い、径変化
作用をその弾性力に頼る場合に比べ、径変化操作をその
弾性力に抗して行う必要が少なくなり、より一層小さな
力で、作業が簡単に行えるようになるとともに、分割形
成してあるものであるから、内溝部の入り口よりも奥側
への収容作業が容易に行える利点があり、柱状体同士を
接続する接続作業の開始初期における作業性を特に向上
させることができる。[Structure 3] In the columnar body of the present invention, as described in claim 3, the ring-shaped member can be constituted by an annular body divided into a plurality in the circumferential direction. [Function and Effect] As in the present configuration, the ring-shaped member is an annular body divided into a plurality of pieces in the circumferential direction, and the inner groove portion of the outer pipe portion communicates with the inside and outside of the outer pipe portion through hole. Is provided, and an operating portion for changing the diameter of the ring-shaped member is formed. With the annular body accommodated in the inner groove portion, the inner column portion is fitted into the outer tube portion, and the ring-shaped member is formed. The member may be operated from the operation portion to reduce the diameter, and the annular body may be interposed between the outer groove portion and the inner groove portion and held in an engaged state therebetween.
In other words, instead of using the C-ring as the ring-shaped member, the ring-shaped member may be constituted by an annular body divided into a plurality of members in the circumferential direction. The state can be changed, and the columnar body according to Configuration 1 can be formed. In this case, an elastic member such as a C-ring is used as the ring-shaped member, and it is less necessary to perform the diameter changing operation against the elastic force as compared with a case in which the diameter changing operation depends on the elastic force. Work can be performed easily with less force, and since it is divided, it has the advantage that it can be easily housed deeper than the entrance of the inner groove, and the columnar bodies are connected. In particular, the workability at the beginning of the start of the connection work can be improved.

【００１０】逆に、前記リング状部材が、周方向に複数
に分割してある環状体であり、前記外側管部の前記内溝
部に、前記外側管部の内外に連通する貫通孔を設けて、
前記リング状部材を径変化操作する操作部を形成してあ
り、前記外溝部に前記環状体を収容した状態で、前記内
側柱部を前記外側管部に嵌入させ、前記リング状部材を
前記操作部から操作して拡径状態にして、前記環状体を
前記外溝部と前記内溝部との両者間にわたって介在し、
その両者に係合状態に保持した状態にしても良い。 つ
まり、上述に示した柱状体における内溝部と外溝部の役
割を入れ替えても良い。前記内溝部と、前記外溝部との
役割を入れ替えた場合には、前記リング状部材の果たす
役割も逆になる。詳述すれば、前記リング状部材は先の
構成において大径状態から係合状態に径変化する必要が
生じるのに対して、この場合には、外溝部の入り口から
奥側に収容される小径状態から係合状態に径変化すれば
良い。この径変化をもたらすためには、リング状部材を
予め前記外溝部に収容しておき、前記外側管部への内側
柱部の嵌入操作を行い、その後、拡径状態にすれば良
い。Conversely, the ring-shaped member is an annular body divided into a plurality in the circumferential direction, and a through hole communicating with the inside and outside of the outer tube is provided in the inner groove of the outer tube. ,
An operation portion for changing the diameter of the ring-shaped member is formed, and in a state where the annular body is housed in the outer groove portion, the inner column portion is fitted into the outer tube portion, and the ring-shaped member is operated by the operation. Operating from the portion to the expanded state, the annular body is interposed between both the outer groove and the inner groove,
The two may be held in an engaged state. That is, the roles of the inner groove portion and the outer groove portion in the columnar body described above may be switched. When the roles of the inner groove and the outer groove are exchanged, the role of the ring-shaped member is reversed. More specifically, while the ring-shaped member needs to change its diameter from the large-diameter state to the engaged state in the above configuration, in this case, the small-diameter member accommodated from the entrance of the outer groove to the back side. The diameter may be changed from the state to the engaged state. To change the diameter, the ring-shaped member may be housed in the outer groove in advance, the operation of fitting the inner pillar into the outer pipe may be performed, and then the diameter may be increased.

【００１１】〔構成４〕 本発明の柱状体は、請求項４に記載したごとく、 前記
内側柱部の外周面と外側管部の内周面とをテーパー面に
形成してあるものでもよい。 〔作用効果〕 本構成のごとく、前記内側柱部の外周面と外側管部の内
周面とをテーパー面に形成してあれば、前記内側柱部と
外側管部とを嵌合操作させるときのクリアランスが大き
くとれるとともに、嵌合操作を行う上でのガイドに利用
できるので、嵌合操作を行う際の作業性の向上に役立つ
とともに、製作誤差等による嵌合不良を防止するのにも
役立つ。[Structure 4] In the columnar body of the present invention, the outer peripheral surface of the inner column portion and the inner peripheral surface of the outer tube portion may be tapered. [Function and Effect] As in the present configuration, if the outer peripheral surface of the inner column portion and the inner peripheral surface of the outer tube portion are formed as tapered surfaces, the fitting operation between the inner column portion and the outer tube portion is performed. Large clearance and can be used as a guide for performing the fitting operation, which helps to improve the workability when performing the fitting operation and also helps prevent poor fitting due to manufacturing errors etc. .

【００１２】〔構成５〕 本発明の柱状体は、請求項５に記載したごとく、前記外
溝部における前記内側柱部の端部側もしくは、前記内溝
部における前記外側管部の端部側のすくなくともいずれ
か一方にテーパー角部を形成してあるものでもよい。 〔作用効果〕 本構成のごとく、前記外溝部における前記内側柱部の端
部側をテーパー角部に形成してあるか、もしくは、前記
内溝部における前記外側管部の端部側をテーパー角部に
形成してれば、前記外溝部もしくは内溝部の入り口から
奥に引退した状態に前記リング状部材を収容した状態
で、前記外側管部と前記内側柱部とを嵌合操作させる際
に、前記リング状部材が、製作誤差、あるいは、弾性付
勢力による変形で、前記外溝部もしくは内溝部の入り口
から、多少はみ出ていてもそのはみ出た部分を乗り越え
て前記内側柱部と外側管部との嵌合操作を行えるので、
作業性良く嵌合操作を行える。[Structure 5] As described in claim 5, the columnar body of the present invention has at least an end portion side of the inner column portion in the outer groove portion or an end portion side of the outer tube portion in the inner groove portion. A taper angle portion may be formed on one of them. [Function and Effect] As in the present configuration, the end portion side of the inner column portion in the outer groove portion is formed as a tapered corner portion, or the end portion side of the outer tube portion in the inner groove portion is formed as a tapered corner portion. If it is formed in the state where the outer tube portion and the inner column portion are fitted with the ring-shaped member housed in a state of being retracted to the back from the entrance of the outer groove portion or the inner groove portion, The ring-shaped member, due to a manufacturing error, or deformation due to elastic biasing force, even if it slightly protrudes from the entrance of the outer groove or the inner groove, gets over the protruding part, and the inner column portion and the outer tube portion Since the fitting operation can be performed,
The fitting operation can be performed with good workability.

【００１３】〔構成６〕 本発明の柱状体の接続構造は、請求項６に記載したごと
く、第一柱状体の一端部と第二柱状体の一端部とに、内
側柱部と外側管部とを振り分けて設け、その内側柱部と
外側管部とを互いに接続するのに、前記内側柱部の外周
面に環状の外溝部を少なくとも１カ所設けるとともに、
前記外側管部の内周面に環状の内溝部を少なくとも１カ
所設け、径変化自在で、前記外溝部もしくは内溝部の入
り口から奥に引退した状態に収容可能なリング状部材を
設け、前記外側管部の前記内溝部に、前記外側管部の内
外に連通する貫通孔を設けて、前記リング状部材を径変
化操作する操作部を設け、前記内側柱部を前記外側管部
に嵌入した状態で、前記操作部から前記リング状部材
を、径変化操作して前記外溝部と前記内溝部との両者間
にわたって介在させて、その両者に係合状態に保持した
点に特徴を有する。 〔作用効果〕 本構成のごとく、第一柱状体の一端部と第二柱状体の一
端部とに、内側柱部と外側管部とを振り分けて設け、そ
の内側柱部と外側管部とを互いに接続するのに、前記内
側柱部の外周面に環状の外溝部を少なくとも１カ所設け
るとともに、前記外側管部の内周面に環状の内溝部を少
なくとも１カ所設け、径変化自在で、前記外溝部もしく
は内溝部の入り口から奥に引退した状態に収容可能なリ
ング状部材を設け、前記外側管部の前記前記内溝部に、
前記外側管部の内外に連通する貫通孔を設けて、前記リ
ング状部材を径変化操作する操作部を設けると、前記外
側管部に前記内側柱部を嵌入させたときに前記外溝部と
内溝部とが、前記外側管部に前記内側柱部とが互いに嵌
入した内側で互いに対向するように配置することが出来
る。そこで、リング状部材を、前記外溝部と前記内溝部
との両者間にわたって介在し、その両者に係合状態に保
持させておけば、そのリング状部材がその前記外側管部
と前記内側柱部との間で抜け止めとなって、前記第一柱
状体と第二柱状体とを確実に連結することになる。ま
た、前記外溝部もしくは内溝部の入り口から奥に引退し
た状態にリング状部材を形成してあるから、このリング
状部材を前記外側管部と前記内側柱部との間に保持させ
るには、前記リング状部材を前記外溝部もしくは内溝部
の入り口から奥に引退した状態に保持した状態で前記内
側柱部と外側管部とを互いに嵌め込んみ、前記操作部か
ら前記リング状部材を径変化操作すればよく、簡単な操
作で前記確実な連結構造を得ることが出来る。[Structure 6] As described in claim 6, the connection structure of the columnar body according to the present invention includes an inner column at one end of the first columnar body and an end of the second columnar body. Part and the outer pipe part are provided separately, and at least one annular outer groove part is provided on the outer peripheral surface of the inner pillar part to connect the inner pillar part and the outer pipe part to each other,
At least one annular inner groove is provided on the inner peripheral surface of the outer tube.
Where provided, freely diameter variation, the outer groove or the inner groove entrance from can be accommodated in a state of being retired rear ring-shaped member provided in said groove of said outer tube part, of the outer tube portion
A through hole communicating with the outside is provided to change the diameter of the ring-shaped member.
An operating portion for performing a changing operation is provided, and in a state where the inner column portion is fitted into the outer tube portion, the ring-shaped member is changed in diameter from the operating portion to extend between both the outer groove portion and the inner groove portion. It is characterized in that it is interposed and held in an engaged state with both. As the [Operation Effect] The present arrangement, the one end portion of the one end portion and the second columnar bodies of the first columnar body, disposed distributed the inner side pillar portion and the outer tube portion, and the inner pillar part and the outer tube portion for the connection with each other, an annular outer groove of at least one location provided <br/> Rutotomoni, the inner groove portion of the annular inner peripheral surface of the outer tube portion small in the outer peripheral surface of the inner pillar part
At least one place , the diameter can be changed freely, and the outer groove or
Is a recess that can be accommodated in a state of being retired from the entrance of the inner groove.
A ring-shaped member, in the inner groove of the outer tube,
A through hole communicating with the inside and outside of the outer tube is provided, and
When the operating portion for changing the diameter of the ring-shaped member is provided, the outer groove portion and the inner groove portion when the inner column portion is fitted in the outer tube portion, and the inner column portion in the outer tube portion are mutually separated. They can be arranged to face each other on the inside where they are fitted. Therefore, if a ring-shaped member is interposed between the outer groove portion and the inner groove portion and held in an engaged state with both of the outer groove portion and the inner groove portion, the ring-shaped member has the outer tube portion and the inner column portion. Between the first columnar body and the second columnar body. Further, since the ring-shaped member is formed in a state of being retreated to the back from the entrance of the outer groove portion or the inner groove portion, to hold the ring-shaped member between the outer tube portion and the inner column portion, the ring-shaped member fitted to each other and the outside of the inner pillar part in the entrance of the groove or the inner groove while keeping the state of being retired to the back and the outer tube portion write Nmi, whether the operating unit
Then, the diameter of the ring-shaped member may be changed, and the reliable connection structure can be obtained by a simple operation.

【００１４】[0014]

〔実施の形態１〕[Embodiment 1]

図１〜８に示すように、本発明の柱状体は、鋼製で管状
の第一柱状体１の一端部に鋼製で管状の継手部を溶接し
て内側柱部１１を設けるとともに、鋼製で管状の第二柱
状体２の一端部に鋼製で管状の継手部を溶接して外側管
部２１を設け、前記内側柱部１１の外周面に環状の外溝
部１２を設けるとともに、前記外側管部２１の内周面に
環状の内溝部２２を設け、その内側柱部１１を外側管部
２１に嵌入させて接続するとともに、径変化自在で前記
内溝部２２の入り口２２ａから奥に引退した状態に収容
可能なリング状部材３を、前記内側柱部１１を前記外側
管部２１に嵌入した状態で、前記外溝部１２と前記内溝
部２２との両者間にわたって介在させ、その両者に係合
状態に保持してある。As shown in FIGS. 1 to 8, the columnar body of the present invention includes a steel tubular joint portion welded to one end of a steel tubular first columnar body 1 to provide an inner pillar portion 11. A tubular joint made of steel is welded to one end of a tubular second columnar body 2 to form an outer tube 21, and an annular outer groove 12 is provided on an outer peripheral surface of the inner column 11, An annular inner groove portion 22 is provided on the inner peripheral surface of the outer tube portion 21, and the inner column portion 11 is fitted into and connected to the outer tube portion 21. The ring-shaped member 3 that can be accommodated in the separated state is interposed between the outer groove portion 12 and the inner groove portion 22 in a state where the inner column portion 11 is fitted into the outer tube portion 21, and is engaged with both. It is kept in the state of matching.

【００１５】また、前記外側管部２１には、前記内溝部
２２において内外連通する貫通孔４を設けて、前記リン
グ状部材３を径変化操作する操作部Ａを形成してある。
また、前記継手部を構成する鋼は、いずれも第一、第二
柱状体１，２を形成する鋼よりも高強度に構成してあ
る。The outer tube portion 21 is provided with a through hole 4 communicating with the inside and outside of the inner groove portion 22 to form an operation portion A for changing the diameter of the ring-shaped member 3.
Further, the steel forming the joint portion is configured to have higher strength than the steel forming the first and second columnar bodies 1 and 2.

【００１６】このような柱状体は、以下のようにして形
成する。尚、本発明にいうリング状部材３の「幅」と
は、そのリング状部材３を径方向に縦断したときの径方
向の長さであり、また、「厚さ」は、リング状部材３の
軸心方向の長さを指す。また、各溝部１２，２２の
「幅」とは、各柱状体１，２の軸心方向に見た入り口１
２ａ、２２ａが開口している距離であり、「深さ」と
は、各柱状体１，２に対して径方向に引退する距離を指
すものとする。Such a columnar body is formed as follows. The “width” of the ring-shaped member 3 according to the present invention is the length in the radial direction when the ring-shaped member 3 is cut in the radial direction, and the “thickness” is the thickness of the ring-shaped member 3. Refers to the length in the axial direction of. The “width” of each of the grooves 12 and 22 is defined as the entrance 1 as viewed in the axial direction of each of the columns 1 and 2.
2a and 22a are open distances, and "depth" refers to the distance to retreat in the radial direction with respect to each of the columnar bodies 1 and 2.

【００１７】〔実施の形態１−１〕 以下に実施形態の一例を図１、２に示す手順に従って説
明する。 （１） 予め、図１（イ）に示すように、鋼製で管状の
第一柱状体１の一端部に鋼製で管状の継手部を溶接して
内側柱部１１を設けるとともに、鋼製で管状の第二柱状
体２の一端部に鋼製で管状の継手部を溶接して外側管部
２１を設け、前記内側柱部１１の外周面に環状の外溝部
１２を設けるとともに、前記外側管部２１の内周面に環
状の内溝部２２を設け、かつ、前記外側管部２１には、
前記内溝部２２において内外連通する貫通孔４を設けた
もの、及び、自然状態で内径が前記外溝部１２の入り口
１２ａの径よりも小さく、かつ、外径が前記内溝部２２
の入り口２２ａの径よりも大きな、バネ材からなるＣリ
ング３１、及び、そのＣリング３１の開口部３１ａより
長く、前記Ｃリング３１の開口部３１ａに嵌着させたと
きに、前記Ｃリング３１の内径を前記内溝部２２の入り
口の径より大きく押し広げる大きさの熱可塑性樹脂製ス
ペーサー５１を用意しておく。尚、前記内溝部２２の深
さは、前記Ｃリング３１の幅よりも大に形成しておくと
ともに、前記外溝部１２の深さは、前記Ｃリング３１の
幅よりも小に形成しておく。 （２） 前記内溝部２２に前記Ｃリング３１を挿入し、
前記Ｃリング３１の開口部３１ａに前記スペーサー５１
を嵌着させることによって、前記Ｃリング３１を拡径さ
せ大径状態にするとともに、前記内溝部２２の入り口か
ら奥に収容させた状態にする。このとき、前記スペーサ
ー５１は、前記貫通孔４に面する位置に配置しておく。 （３） 前記外側管部２１に前記内側柱部１１を嵌入さ
せ、前記内溝部２２と前記外溝部１２とを対向する姿勢
に配置する。（図１（ロ）、図２（イ）参照） （４） 前記貫通孔４から前記スペーサー５１を加熱融
解させ、前記Ｃリング３１を縮径させることによって、
前記外溝部１２と前記内溝部２２との両者間にわたって
介在させ、その両者に係合状態に保持させる。 （５） 前記内溝部２２と前記Ｃリング３１との間の空
間に硬化性の充填剤ａを充填し、前記Ｃリング３１を固
定し、がたつきを防止する（図１（ハ）、図２（ロ）参
照）。これによって、前記第一柱状体１と第二柱状体２
とは前記Ｃリング３１を介して互いに係合状態に連結さ
れた状態になる。[Embodiment 1-1] An example of the embodiment will be described below in accordance with the procedures shown in FIGS. (1) As shown in FIG. 1A, a steel tubular joint is welded to one end of a steel tubular first columnar body 1 to provide an inner pillar 11 in advance, and the steel tubular joint is provided. A steel tubular joint is welded to one end of the tubular second columnar body 2 to provide an outer tube 21, and an annular outer groove 12 is provided on the outer peripheral surface of the inner column 11, An annular inner groove 22 is provided on the inner peripheral surface of the tube 21, and the outer tube 21 has
The inner groove 22 having a through hole 4 communicating with the inside and the outside, and an inner diameter smaller than the diameter of the entrance 12a of the outer groove 12 in a natural state, and an outer diameter of the inner groove 22
A C-ring 31 made of a spring material, which is larger than the diameter of the entrance 22a of the C-ring, and is longer than the opening 31a of the C-ring 31, and when the C-ring 31 is fitted into the opening 31a of the C-ring 31, A spacer 51 made of a thermoplastic resin having such a size as to push the inner diameter of the inner groove 22 larger than the diameter of the entrance of the inner groove 22 is prepared. In addition, the depth of the inner groove 22 is formed larger than the width of the C ring 31, and the depth of the outer groove 12 is formed smaller than the width of the C ring 31. . (2) Insert the C-ring 31 into the inner groove 22,
The spacer 51 is inserted into the opening 31a of the C-ring 31.
The C ring 31 is expanded to have a large diameter state by being fitted thereinto, and the C ring 31 is accommodated deeply from the entrance of the inner groove 22. At this time, the spacer 51 is arranged at a position facing the through hole 4. (3) The inner column portion 11 is fitted into the outer tube portion 21, and the inner groove portion 22 and the outer groove portion 12 are arranged so as to face each other. (See FIGS. 1 (b) and 2 (a).) (4) By heating and melting the spacer 51 from the through hole 4 and reducing the diameter of the C ring 31,
The outer groove portion 12 and the inner groove portion 22 are interposed between both of them, and both of them are held in an engaged state. (5) The space between the inner groove 22 and the C-ring 31 is filled with a curable filler a to fix the C-ring 31 and prevent rattling (FIG. 1 (c), FIG. 2 (b)). Thereby, the first columnar body 1 and the second columnar body 2
Is in a state of being connected to each other via the C-ring 31 in an engaged state.

【００１８】〔実施の形態１−２〕 以下に図３、４に示す手順に従って実施形態の一例を説
明する。 （１） 予め、図３に示すように、鋼製で管状の第一柱
状体１の一端部に鋼製で管状の継手部を溶接して内側柱
部１１を設けるとともに、鋼製で管状の第二柱状体の一
端部に鋼製で管状の継手部を溶接して外側管部２１を設
け、前記内側柱部１１の外周面に環状の外溝部１２を設
けるとともに、前記外側管部２１の内周面に環状の内溝
部２２を設け、かつ、前記外側管部２１には、前記内溝
部２２において内外連通する貫通孔４を設けたもの、及
び、自然状態で内径が前記内溝部２２の入り口の径より
も大きく、かつ、外径が前記内溝部２２の溝底部の径よ
りも小さな、バネ材からなるＣリング３１、を用意して
おくとともに、前記Ｃリング３１の両端部にそれぞれ係
合部３１ａを設けるとともに、その両係合部３１ａに係
合して前記係合部同士３１ａを前記Ｃリング３１の自然
状態時よりも近接した状態に保持し、前記Ｃリング３１
を縮径状態に径変化させる接続部材６１を用意してお
く。 （２） 前記内溝部２２に前記Ｃリング３１を内装する
とともに、前記貫通孔４に前記Ｃリング３１の開口部３
１ａが面するように大径状態で配置しておく。 （３） 前記外側管部２１に前記内側柱部１１を嵌入さ
せ、前記内溝部２２と前記外溝部１２とを対向する姿勢
に配置する（図３（ロ）、図４（イ）参照）。 （４） 前記貫通孔４から前記Ｃリング３１を縮径操作
させて、前記接続部材６１を前記両係合凹部間に取り付
け、前記Ｃリング３１を小径にして、前記内側柱部１１
と外側管部２１との間で係合状態に保持させる。（図３
（ハ）、図４（ロ）参照）これによって、前記第一柱状
体１と第二柱状体２とは前記Ｃリング３１を介して互い
に係合状態に連結された状態になる。[Embodiment 1-2] An example of an embodiment will be described below in accordance with the procedures shown in FIGS. (1) As shown in FIG. 3, a steel tubular joint is welded to one end of a steel tubular first columnar body 1 to provide an inner pillar 11 in advance, and a steel tubular tubular body is provided. A steel tubular joint is welded to one end of the second columnar body to provide an outer tube portion 21, and an outer peripheral surface of the inner column portion 11 is provided with an annular outer groove portion 12. An annular inner groove portion 22 is provided on the inner peripheral surface, and the outer tube portion 21 is provided with a through hole 4 communicating with the inside and outside of the inner groove portion 22. A C-ring 31 made of a spring material, which is larger than the diameter of the entrance and whose outer diameter is smaller than the diameter of the groove bottom of the inner groove 22, is prepared. A mating portion 31a is provided, and the engaging portions 31a are engaged with the engaging portions 31a. The person 31a is held closer to the C-ring 31 than in the natural state,
A connection member 61 for changing the diameter of the connection member to a reduced diameter state is prepared. (2) The C-ring 31 is provided in the inner groove 22 and the opening 3 of the C-ring 31 is formed in the through hole 4.
It is arranged in a large diameter state so that 1a faces. (3) The inner column portion 11 is fitted into the outer tube portion 21, and the inner groove portion 22 and the outer groove portion 12 are arranged in a posture facing each other (see FIGS. 3 (b) and 4 (a)). (4) The diameter of the C-ring 31 is reduced from the through hole 4 to attach the connecting member 61 between the two engaging recesses, and the diameter of the C-ring 31 is reduced.
And the outer tube portion 21 is held in an engaged state. (FIG. 3
(C), FIG. 4 (b)) As a result, the first columnar body 1 and the second columnar body 2 are connected to each other via the C ring 31 in an engaged state.

【００１９】〔実施の形態１−３〕 以下に図５、６に示す手順に従って実施形態の一例を説
明する。 （１） 予め、図５（イ）に示すように、鋼製で管状の
第一柱状体１の一端部に鋼製で管状の継手部を溶接して
内側柱部１１を設けるとともに、鋼製で管状の第二柱状
体の一端部に鋼製で管状の継手部を溶接して外側管部２
１を設け、前記内側柱部１１の外周面に環状の外溝部１
２を設けるとともに、前記外側管部２１の内周面に環状
の内溝部２２を設けたもの、及び、自然状態で内径が前
記外溝部１２の入り口の径よりも小さく、かつ、外径が
前記内溝部２２の入り口の径よりも大きな、バネ材から
なるＣリング３１、を用意しておく。尚、前記内溝部２
２の深さは、前記Ｃリング３１の幅よりも大に形成して
おくとともに、前記外溝部１２の深さは、前記Ｃリング
３１の幅よりも小に形成しておく。また、前記内側柱部
１１の外側端縁部に、テーパー端部１ａを形成してあ
り、前記Ｃリング３１を前記内溝部２２に係合させた状
態で、前記内側柱部１１を前記外側管部２１に嵌入させ
たときに、前記Ｃリング３１を前記テーパー端部１ａと
接当自在に形成してある。 （２） 前記内溝部２２に前記Ｃリング３１を挿入し、
前記Ｃリング３１が径変化自在になるように配置してお
く。（図６参照） （３） 前記外側管部２１に前記内側柱部１１を嵌入さ
せる。このとき、前記内側柱部１１の外側端縁部の前記
テーパー端部１ａにより前記Ｃリング３１が拡径作用を
受け拡径状態になるので、前記内側柱部１１の外側端縁
部に前記Ｃリング３１を乗り越えさせられる。（図５
（ロ）〜（ハ）参照） （４） 前記内側柱部１１の外側端縁部に前記Ｃリング
３１を乗り越えさせると、さらに、内側柱部１１をスラ
イド嵌入させて、前記内溝部２２と前記外溝部１２とを
対向する姿勢に配置させる。このとき、前記Ｃリング３
１は、前内側柱部１１のテーパー端部１ａから受けた拡
径作用から解放されるので、縮径して自然状態に復元す
るとともに、前記外溝部１２と前記内溝部２２との両者
間にわたって介在した状態になる（図５（ハ）参照）。
これによって、前記第一柱状体１と第二柱状体２とは前
記Ｃリング３１を介して互いに係合状態に連結された状
態になる。[Embodiment 1-3] An example of an embodiment will be described below in accordance with the procedures shown in FIGS. (1) As shown in FIG. 5 (a), a steel tubular joint is welded to one end of a steel tubular first columnar body 1 to provide an inner pillar 11 in advance, and a steel tubular joint is provided. And a steel tubular joint is welded to one end of the tubular second columnar body to form an outer tubular portion 2.
1 is provided on the outer peripheral surface of the inner pillar 11.
2 and an annular inner groove 22 provided on the inner peripheral surface of the outer tube 21, and the inner diameter is smaller than the diameter of the entrance of the outer groove 12 in a natural state, and the outer diameter is A C-ring 31 made of a spring material and having a diameter larger than the diameter of the entrance of the inner groove 22 is prepared. The inner groove 2
2 is formed to be larger than the width of the C-ring 31, and the depth of the outer groove 12 is formed to be smaller than the width of the C-ring 31. Further, a tapered end 1a is formed at an outer edge of the inner column 11, and the inner column 11 is connected to the outer tube while the C-ring 31 is engaged with the inner groove 22. The C-ring 31 is formed so as to be able to come into contact with the tapered end 1a when fitted into the portion 21. (2) Insert the C-ring 31 into the inner groove 22,
The C ring 31 is arranged so that its diameter can be changed. (See FIG. 6) (3) The inner column 11 is fitted into the outer tube 21. At this time, the diameter of the C ring 31 is increased by the tapered end 1a of the outer edge of the inner column 11 so that the C ring 31 is expanded. The ring 31 can be overcome. (FIG. 5
(Refer to (b) to (c).) (4) When the C-ring 31 is passed over the outer edge of the inner pillar 11, the inner pillar 11 is further slidably fitted to the inner groove 22 and the inner groove 22. The outer groove portion 12 is disposed in a posture facing the outer groove portion 12. At this time, the C ring 3
1 is released from the diameter-increasing action received from the tapered end 1a of the front inner column portion 11, so that the diameter is reduced and the natural state is restored, and the space between the outer groove portion 12 and the inner groove portion 22 is extended. The state is interposed (see FIG. 5C).
Thereby, the first columnar body 1 and the second columnar body 2 are brought into a state of being connected to each other via the C-ring 31.

【００２０】〔実施の形態１−４〕 以下に図７、８に示す手順に従って実施形態の一例を説
明する。 （１） 予め、図７（イ）に示すように、鋼製で管状の
第一柱状体１の一端部に鋼製で管状の継手部を溶接して
内側柱部１１を設けるとともに、鋼製で管状の第二柱状
体の一端部に鋼製で管状の継手部を溶接して外側管部２
１を設け、前記内側柱部１１の外周面に環状の外溝部１
２を設けるとともに、前記外側管部２１の内周面に環状
の内溝部２２を設け、かつ、前記外側管部２１には、前
記内溝部２２において内外連通する貫通孔４を周方向に
９０度づつ位相をずらせて４カ所設けたもの、及び、自
然状態で内径が前記外溝部１２の入り口の径よりも小さ
く、かつ、外径が前記内溝部２２の入り口の径よりも大
きく周方向に４分割した形状の分割リング３２を用意し
ておく。尚、前記内溝部２２の深さは、前記分割リング
３２の幅よりも大に形成しておくとともに、前記外溝部
１２の深さは、前記Ｃリング３１の幅よりも小に形成し
ておく。また、図７，８において、前記内側柱部１１と
外側管部２１とは、先細りになる２段の嵌合面を有し、
嵌合面のそれぞれの段に外、内溝部１２，２２を設けて
ある。また、前記貫通孔４には、ボルト５２を螺入自在
な螺入溝を設けてある。 （２） 前記内溝部２２に前記分割リング３２を挿入
し、前記分割リング３２が径変化自在になる大径状態で
配置しておく。 （３） 前記外側管部２１に前記内側柱部１１を嵌入さ
せ、前記内溝部２２と前記外溝部１２とを対向する姿勢
に配置する（図７（ロ）、図８（イ）参照）。 （４） 前記貫通孔４からボルト５２を螺入させること
により前記ボルト５２先端部を前記分割リング３２に接
当させ、さらに外溝部１２内へ侵入させ、前記分割リン
グ３２を縮径操作させて、前記分割リング３２を係合状
態に保持させる。（図７（ハ）、図８（ロ）参照）これ
によって、前記第一柱状体１と第二柱状体２とは前記Ｃ
リング３１を介して互いに係合状態に連結された状態に
なる。[Embodiment 1-4] An example of an embodiment will be described below in accordance with the procedures shown in FIGS. (1) As shown in FIG. 7A, a steel tubular joint is welded to one end of a steel tubular first columnar body 1 to provide an inner pillar 11 in advance, and the steel tubular joint is provided. And a steel tubular joint is welded to one end of the tubular second columnar body to form an outer tubular portion 2.
1 is provided on the outer peripheral surface of the inner pillar 11.
2 and an annular inner groove portion 22 is provided on the inner peripheral surface of the outer tube portion 21, and the outer tube portion 21 is formed with a through hole 4 communicating with the inside and outside of the inner groove portion 22 at 90 degrees in the circumferential direction. The inner diameter is smaller than the diameter of the entrance of the inner groove part 22 in the natural state, and the outer diameter is larger than the diameter of the entrance of the inner groove part 22 in the circumferential direction. A split ring 32 having a split shape is prepared. The depth of the inner groove portion 22 is formed larger than the width of the split ring 32, and the depth of the outer groove portion 12 is formed smaller than the width of the C ring 31. . 7 and 8, the inner column portion 11 and the outer tube portion 21 have a tapered two-stage fitting surface.
Outer and inner grooves 12 and 22 are provided at each step of the fitting surface. Further, the through hole 4 is provided with a screw groove into which the bolt 52 can be screwed. (2) The split ring 32 is inserted into the inner groove 22, and the split ring 32 is arranged in a large-diameter state where the diameter can be changed. (3) The inner column portion 11 is fitted into the outer tube portion 21, and the inner groove portion 22 and the outer groove portion 12 are arranged in a facing position (see FIGS. 7 (b) and 8 (a)). (4) By screwing the bolt 52 through the through hole 4, the tip of the bolt 52 is brought into contact with the split ring 32, and further penetrates into the outer groove 12, and the split ring 32 is reduced in diameter. The split ring 32 is held in the engaged state. (See FIG. 7 (C) and FIG. 8 (B).) Thereby, the first columnar body 1 and the second columnar body 2
The state in which they are connected to each other via the ring 31 is established.

【００２１】〔実施の形態２〕 図９〜１５に示すように、本発明の柱状体の接続構造
は、鋼製で管状の第一柱状体１の一端部に鋼製で管状の
継手部を溶接して内側柱部１１を設けるとともに、鋼製
で管状の第二柱状体の一端部に鋼製で管状の継手部を溶
接して外側管部２１を設け、前記内側柱部１１の外周面
に環状の外溝部１２を設けるとともに、前記外側管部２
１の内周面に環状の内溝部２２を設け、その内側柱部１
１を外側管部２１に嵌入させて接続するとともに、径変
化自在で前記外溝部１２の入り口から奥に引退した状態
に収容可能なリング状部材３を前記内側柱部１１を前記
外側管部２１に嵌入した状態で、前記外溝部１２と前記
内溝部２２との両者間にわたって介在させ、その両者に
係合状態に保持してある。[Embodiment 2] As shown in FIGS. 9 to 15, the connection structure of a columnar body of the present invention has a steel tubular joint portion at one end of a steel tubular first columnar body 1. The inner pillar portion 11 is provided by welding, and the outer tubular portion 21 is provided by welding a steel tubular joint portion to one end of a steel tubular second pillar body, and the outer peripheral surface of the inner pillar portion 11 is provided. An annular outer groove portion 12 is provided in the outer tube portion 2.
An annular inner groove portion 22 is provided on the inner peripheral surface of
1 is inserted into the outer tube portion 21 to be connected thereto, and the ring-shaped member 3 which can change its diameter and can be accommodated in a state of being retracted deep from the entrance of the outer groove portion 12 is connected to the inner column portion 11 by the outer tube portion 21. Is inserted between the outer groove portion 12 and the inner groove portion 22 and held in an engaged state.

【００２２】また、前記外側管部２１には、前記内溝部
２２において内外連通する貫通孔４を設けて、前記リン
グ状部材３を径変化操作する操作部を形成してある。ま
た、前記継手部を構成する鋼は、いずれも第一、第二柱
状体１，２を形成する鋼よりも高強度に構成してある。The outer tube portion 21 is provided with a through hole 4 communicating with the inside and outside of the inner groove portion 22 to form an operation portion for changing the diameter of the ring-shaped member 3. Further, the steel forming the joint portion is configured to have higher strength than the steel forming the first and second columnar bodies 1 and 2.

【００２３】このような柱状体の接続構造は、以下のよ
うにして形成する。 〔実施の形態２−１〕 以下に図９、１０に示す手順に従って実施形態の一例を
説明する。 （１） 予め、図９（イ）に示すように、鋼製で管状の
第一柱状体１の一端部に鋼製で管状の継手部を溶接して
内側柱部１１を設けるとともに、鋼製で管状の第二柱状
体の一端部に鋼製で管状の継手部を溶接して外側管部２
１を設け、前記内側柱部１１の外周面に環状の外溝部１
２を設けるとともに、前記外側管部２１の内周面に環状
の内溝部２２を設け、かつ、前記外側管部２１には、前
記内溝部２２において内外連通する貫通孔４を設けたも
の、及び、自然状態で内径が前記外溝部１２の溝底部の
径よりも大きく、かつ、外径が前記外溝部１２の入り口
の径よりも小さな、バネ材からなるＣリング３１、及
び、そのＣリング３１の開口部３１ａより長く、前記Ｃ
リング３１の開口部３１ａに嵌着させたときに、前記Ｃ
リング３１の内径を前記内溝部２２の入り口の径より大
きく押し広げる大きさのスペーサー５１を用意してお
く。尚、前記外溝部１２の深さは、前記Ｃリング３１の
幅よりも大に形成しておくとともに、前記内溝部２２の
深さは、前記Ｃリング３１の幅よりも小に形成してお
く。 （２） 前記外溝部１２に前記Ｃリング３１を挿入して
小径状態にする。 （３） 前記外側管部２１に前記内側柱部１１を嵌入さ
せ、前記内溝部２２と前記外溝部１２とを対向する姿勢
に配置する。また、前記貫通孔４は前記Ｃリング３１の
開口部３１ａに対向する位置に配置する（図９（ロ）、
図１０（イ）参照）。 （４） 前記貫通孔４から前記Ｃリング３１を拡径操作
するとともに、前記開口部３１ａに前記スペーサー５１
を介装し、前記外溝部１２と前記内溝部２２との両者間
にわたって介在させ、その両者に係合状態に保持させ
る。（図９（ハ）、図１０（ロ）参照）。これによっ
て、前記第一柱状体１と第二柱状体２とは前記Ｃリング
３１を介して互いに係合状態に連結された状態になる。The connection structure of such a columnar body is formed as follows. [Embodiment 2-1] An example of an embodiment will be described below in accordance with the procedures shown in FIGS. (1) As shown in FIG. 9A, a steel tubular joint is welded to one end of a steel tubular first columnar body 1 in advance to provide an inner pillar 11 and a steel tubular joint is provided. And a steel tubular joint is welded to one end of the tubular second columnar body to form an outer tubular portion 2.
1 is provided on the outer peripheral surface of the inner pillar 11.
2, an annular inner groove portion 22 is provided on the inner peripheral surface of the outer tube portion 21, and the outer tube portion 21 is provided with a through hole 4 communicating with the inside and the outside of the inner groove portion 22, and A C-ring 31 made of a spring material having an inner diameter that is larger than the diameter of the groove bottom of the outer groove 12 in its natural state and smaller than the diameter of the entrance of the outer groove 12, and the C-ring 31. Is longer than the opening 31a of
When fitted into the opening 31a of the ring 31, the C
A spacer 51 large enough to push the inner diameter of the ring 31 larger than the diameter of the entrance of the inner groove 22 is prepared. In addition, the depth of the outer groove 12 is formed to be larger than the width of the C-ring 31, and the depth of the inner groove 22 is formed to be smaller than the width of the C-ring 31. . (2) Insert the C-ring 31 into the outer groove 12 to reduce the diameter. (3) The inner column portion 11 is fitted into the outer tube portion 21, and the inner groove portion 22 and the outer groove portion 12 are arranged so as to face each other. The through hole 4 is disposed at a position facing the opening 31a of the C-ring 31 (FIG. 9B).
FIG. 10 (a)). (4) The diameter of the C ring 31 is expanded from the through hole 4 and the spacer 51 is inserted into the opening 31a.
Is interposed between both the outer groove 12 and the inner groove 22 and both are held in an engaged state. (See FIG. 9 (C) and FIG. 10 (B)). Thereby, the first columnar body 1 and the second columnar body 2 are brought into a state of being connected to each other via the C-ring 31.

【００２４】〔実施の形態２−２〕 以下に図１１、１２に示す手順に従って実施形態の一例
を説明する。 （１） 予め、図１１（イ）に示すように、鋼製で管状
の第一柱状体１の一端部に鋼製で管状の継手部を溶接し
て内側柱部１１を設けるとともに、鋼製で管状の第二柱
状体の一端部に鋼製で管状の継手部を溶接して外側管部
２１を設け、前記内側柱部１１の外周面に環状の外溝部
１２を設けるとともに、前記外側管部２１の内周面に環
状の内溝部２２を設け、かつ、前記外側管部２１には、
前記内溝部２２において内外連通する貫通孔４を設けた
もの、及び、自然状態で内径が前記外溝部１２の入り口
の径よりも小さく、かつ、外径が前記内溝部２２の入り
口の径よりも大きな、バネ材からなるＣリング３１、及
び、前記Ｃリング３１の両端部にそれぞれ係合凹部３１
ｂを設けるとともに、その両係合凹部３１ｂに係合して
前記係合凹部３１ｂ同士を前記Ｃリング３１の自然状態
時よりも近接した状態に保持し、前記Ｃリング３１を縮
径状態に径変化させる熱可塑性樹脂製の接続部材６１を
用意しておく。 （２） 前記外溝部１２に前記Ｃリング３１を内装する
とともに、そのＣリング３１の両端部の係合凹部３１ｂ
に前記接続部材６１を取り付け、小径状態で配置してお
く。 （３） 前記外側管部２１に前記内側柱部１１を嵌入さ
せ、前記内溝部２２と前記外溝部１２とを対向する姿勢
に配置する。また、前記貫通孔４は前記Ｃリング３１の
開口部３１ａに対向する位置に配置する（図１１
（ロ）、図１２（イ）参照）。 （４） 前記貫通孔４から、前記接続部材６１を加熱融
解させ、前記Ｃリング３１の小径状態を解除して、前記
Ｃリング３１を自然状態にして、前記内側柱部１１と外
側管部２１との間で係合状態に保持させる（図１１
（ハ）、図１２（ロ）参照）。これによって、前記第一
柱状体１と第二柱状体２とは前記Ｃリング３１を介して
互いに係合状態に連結された状態になる。[Embodiment 2-2] An example of an embodiment will be described below in accordance with the procedures shown in FIGS. (1) As shown in FIG. 11A, a steel tubular joint is welded to one end of a steel tubular first columnar body 1 to provide an inner pillar 11 in advance, and the steel tubular joint is provided. A tubular joint made of steel is welded to one end of the tubular second columnar body to provide an outer tube portion 21, an outer peripheral surface of the inner column portion 11 is provided with an annular outer groove portion 12, and An annular inner groove portion 22 is provided on the inner peripheral surface of the portion 21, and the outer tube portion 21 has
The inner groove 22 having a through hole 4 communicating with the inside and the outside, and the inner diameter is smaller than the diameter of the entrance of the outer groove 12 in the natural state, and the outer diameter is larger than the diameter of the entrance of the inner groove 22. A large C-ring 31 made of a spring material, and engaging recesses 31 at both ends of the C-ring 31, respectively.
b, the two engagement recesses 31b are engaged with each other to hold the engagement recesses 31b closer to each other than when the C ring 31 is in a natural state, and the C ring 31 is reduced in diameter to a reduced diameter state. A connecting member 61 made of a thermoplastic resin to be changed is prepared. (2) The C-ring 31 is housed in the outer groove 12 and the engaging recesses 31 b at both ends of the C-ring 31.
The connecting member 61 is attached to the first member and is arranged in a small diameter state. (3) The inner column portion 11 is fitted into the outer tube portion 21, and the inner groove portion 22 and the outer groove portion 12 are arranged so as to face each other. Further, the through-hole 4 is disposed at a position facing the opening 31a of the C-ring 31 (FIG. 11).
(B) and FIG. 12 (a)). (4) The connection member 61 is heated and melted from the through hole 4 to release the small diameter state of the C ring 31 to bring the C ring 31 into a natural state, and the inner column portion 11 and the outer tube portion 21 are released. 11 is held in an engaged state (see FIG. 11).
(C), see FIG. 12 (b)). Thereby, the first columnar body 1 and the second columnar body 2 are brought into a state of being connected to each other via the C-ring 31.

【００２５】〔実施の形態２−３〕 以下に図１３に示す手順に従って実施形態の一例を説明
する。 （１） 予め、図１３（イ）に示すように、鋼製で管状
の第一柱状体１の一端部に鋼製で管状の継手部を溶接し
て内側柱部１１を設けるとともに、鋼製で管状の第二柱
状体の一端部に鋼製で管状の継手部を溶接して外側管部
２１を設け、前記内側柱部１１の外周面に環状の外溝部
１２を設けるとともに、前記外側管部２１の内周面に環
状の内溝部２２を設けたもの、及び、自然状態で内径が
前記外溝部１２の入り口の径よりも小さく、かつ、外径
が前記内溝部２２の入り口の径よりも大きな、バネ材か
らなるＣリング３１、を用意しておく。尚、前記外溝部
１２の深さは、前記Ｃリング３１の幅よりも大に形成し
ておくとともに、前記内溝部２２の深さは、前記Ｃリン
グ３１の幅よりも小に形成しておく。また、前記外側管
部２１の内側端縁部に、テーパー端部２ａを形成してあ
る。 （２） 前記外溝部１２に前記Ｃリング３１を挿入し、
前記Ｃリング３１が径変化自在になるように配置してお
く。 （３） 前記外側管部２１に前記内側柱部１１を嵌入さ
せる。このとき、前記外側管部２１の内側端縁部の前記
テーパー端部２ａにより、前記Ｃリング３１が縮径作用
を受け、前記外側管部２１の内側端縁部に前記Ｃリング
３１を乗り越えさせられる。（図１３（ロ）〜（ハ）参
照） （４） 前記外側管部２１の内側端縁部に前記Ｃリング
３１を乗り越えさせると、さらに、外側管部２１をスラ
イド嵌入させて、前記内溝部２２と前記外溝部１２とを
対向する姿勢に配置させる。このとき、前記Ｃリング３
１は、前外側管部２１のテーパー端部２ａから受けた縮
径作用から解放されるので、拡径して自然状態に復元す
るとともに、前記外溝部１２と前記内溝部２２との両者
間にわたって介在した状態になる。これによって、前記
第一柱状体１と第二柱状体２とは前記Ｃリング３１を介
して互いに係合状態に連結された状態になる。[Embodiment 2-3] An example of the embodiment will be described below in accordance with the procedure shown in FIG. (1) As shown in FIG. 13A, a steel tubular joint is welded to one end of a steel tubular first columnar body 1 to provide an inner pillar 11 in advance, and a steel tubular joint is provided. A tubular joint made of steel is welded to one end of the tubular second columnar body to provide an outer tube portion 21, an outer peripheral surface of the inner column portion 11 is provided with an annular outer groove portion 12, and An annular inner groove portion 22 provided on the inner peripheral surface of the portion 21, and an inner diameter smaller than the diameter of the entrance of the outer groove portion 12 in a natural state, and the outer diameter is smaller than the diameter of the entrance of the inner groove portion 22. A large C-ring 31 made of a spring material is prepared. In addition, the depth of the outer groove 12 is formed larger than the width of the C ring 31, and the depth of the inner groove 22 is formed smaller than the width of the C ring 31. . Further, a tapered end 2a is formed at an inner edge of the outer tube 21. (2) Insert the C-ring 31 into the outer groove 12,
The C ring 31 is arranged so that its diameter can be changed. (3) The inner column 11 is fitted into the outer tube 21. At this time, the diameter of the C-ring 31 is reduced by the tapered end 2 a of the inner edge of the outer tube 21, and the inner edge of the outer tube 21 is moved over the C-ring 31. Can be (See FIGS. 13 (b) to 13 (c)) (4) When the C-ring 31 is passed over the inner edge of the outer tube 21, the outer tube 21 is further slid into the inner groove. 22 and the outer groove portion 12 are arranged so as to face each other. At this time, the C ring 3
1 is released from the diameter-reducing action received from the tapered end 2a of the front outer tube portion 21, so that the diameter of the outer groove portion 12 is restored to a natural state, and the space between the outer groove portion 12 and the inner groove portion 22 is extended. Become intervening. As a result, the first columnar body 1 and the second columnar body 2 are in a state of being connected to each other via the C-ring 31.

【００２６】〔実施の形態２−４〕 以下に図１４、１５に示す手順に従って実施形態の一例
を説明する。 （１） 予め、図１４（イ）に示すように、鋼製で管状
の第一柱状体１の一端部に鋼製で管状の継手部を溶接し
て内側柱部１１を設けるとともに、鋼製で管状の第二柱
状体の一端部に鋼製で管状の継手部を溶接して外側管部
２１を設け、前記内側柱部１１の外周面に環状の外溝部
１２を設けるとともに、前記外側管部２１の内周面に環
状の内溝部２２を設け、かつ、前記外側管部２１には、
前記内溝部２２において内外連通する貫通孔４を周方向
に９０度づつ位相をずらせて４カ所設けたもの、及び、
自然状態で内径が前記外溝部１２の入り口の径よりも小
さく、かつ、外径が前記内溝部２２の入り口の径よりも
大きく周方向に４分割した形状の分割リング３２を用意
しておく。尚、前記外溝部１２の深さは、前記分割リン
グ３２の幅よりも大に形成しておくとともに、前記内溝
部２２の深さは、前記Ｃリング３１の幅よりも小に形成
しておく。また、前記貫通孔４には、ボルト６２を螺入
自在な螺入溝を設けるとともに、前記外溝部１２に前記
分割リング３２を配置し、前記内側柱部１１と外側管部
２１とを嵌合させたときに、前記分割リング３２の前記
貫通孔４に対向する位置にも、前記ボルトを螺入自在な
螺入溝を設けてある。 （２） 前記外溝部１２に前記分割リング３２を挿入
し、前記分割リング３２が径変化自在になる小径状態で
配置しておく。 （３） 前記外側管部２１に前記内側柱部１１を嵌入さ
せ、前記内溝部２２と前記外溝部１２とを対向する姿勢
に配置する。（図１４（ロ）参照） （４） 前記貫通孔４からボルト６２を螺入させること
により前記ボルト先端部を前記分割リング３２に接当さ
せ、さらに分割リング３２の螺入溝に侵入させ（図１５
（イ）参照）、前記分割リング３２を螺入操作により内
溝部２２側に引き寄せて拡径操作させると、前記分割リ
ング３２が内溝部と外溝部との間に係合状態に保持され
る（図１５ （ロ）参照）。これによって、前記第一柱
状体１と第二柱状体とは前記Ｃリング３１を介して互い
に係合状態に連結された状態になる（図１４（ハ）、図
１５（ロ）参照）。[Embodiment 2-4] An example of an embodiment will be described below in accordance with the procedures shown in FIGS. (1) As shown in FIG. 14A, a steel tubular joint is welded to one end of a steel tubular first columnar body 1 to provide an inner pillar 11 in advance, and the steel tubular joint is provided. A tubular joint made of steel is welded to one end of the tubular second columnar body to provide an outer tube portion 21, an outer peripheral surface of the inner column portion 11 is provided with an annular outer groove portion 12, and An annular inner groove portion 22 is provided on the inner peripheral surface of the portion 21, and the outer tube portion 21 has
A structure in which four through holes 4 communicating with the inside and outside in the inner groove portion 22 are provided at four positions shifted by 90 degrees in the circumferential direction, and
A split ring 32 having a shape in which the inner diameter is smaller than the diameter of the entrance of the outer groove portion 12 in the natural state and the outer diameter is larger than the diameter of the entrance of the inner groove portion 22 in the circumferential direction and is divided into four in a natural state is prepared. The depth of the outer groove portion 12 is formed larger than the width of the split ring 32, and the depth of the inner groove portion 22 is formed smaller than the width of the C ring 31. . The through-hole 4 is provided with a screw-in groove into which a bolt 62 can be screwed, and the split ring 32 is arranged in the outer groove portion 12 so that the inner column portion 11 and the outer tube portion 21 are fitted. A threaded groove into which the bolt can be screwed is also provided at a position of the split ring 32 facing the through hole 4 when the split ring 32 is made. (2) The split ring 32 is inserted into the outer groove 12, and the split ring 32 is arranged in a small diameter state where the diameter can be changed. (3) The inner column portion 11 is fitted into the outer tube portion 21, and the inner groove portion 22 and the outer groove portion 12 are arranged so as to face each other. (See FIG. 14B.) (4) By screwing the bolt 62 through the through hole 4, the tip end of the bolt comes into contact with the split ring 32 and further enters the threaded groove of the split ring 32 ( FIG.
(See (a)), when the split ring 32 is pulled toward the inner groove portion 22 by a screwing operation and is operated to increase the diameter, the split ring 32 is held in an engaged state between the inner groove portion and the outer groove portion ( FIG. 15 (b)). As a result, the first columnar body 1 and the second columnar body are brought into a state of being connected to each other via the C-ring 31 (see FIGS. 14C and 15B).

【００２７】〔別実施形態〕 以下に別実施形態を説明する。前記第一柱状体１と第二
柱状体との間に介在するリング状部材３としては、Ｃリ
ング３１や、分割リング３２の形状に限らず、例えば、
Ｃリング３１の両端部に互いに係合自在な係合部を設
け、径変化自在なＯリング状に形成してあるようなもの
（図１６（イ）参照）であっても良く、これらを総称し
てリング状部材３と呼ぶ。また、前記Ｃリング３１の径
変化操作や分割リング３２の出退操作を行う貫通孔４に
ついては、必ずしも必要なわけではなく、例えば、実施
の形態１−１のようにスペーサー５１を加熱融解するよ
うな場合には、特に貫通孔４から加熱する必要性はない
ので外側管部２１ごと加熱する形態にしてもよいし、前
記内側柱部１１と外側管部２１との嵌合代から、前記ス
ペーサー５１を加熱融解する電熱線を引きだし接続して
おき、その電熱線から前記加熱融解操作を行い、前記Ｃ
リング３１の径変化操作を行う形態であっても良い。こ
のように径変化操作を前記内側柱部１１と外側管部２１
との嵌合と別途行うような場合、前記貫通孔４や電熱線
等を操作部Ａと総称する。また、前記スペーサー５１に
替え、前記Ｃリング３１の開口部３１ａに介装したとき
に、そのＣリング３１をを拡径状態にし、前記操作部Ａ
から介装解除自在に設けたボルトを設けてあっても良く
（図２２参照）、前記Ｏリング状のものに例示した係合
部等も含めて拡径状態保持部５と総称する。逆に、前記
接続部材６１や、前記Ｏリング状のものに例示した係合
部等も含めて縮径状態保持部６と総称する。この拡径状
態保持部５や縮径状態保持部６としては、図１６
（ロ）、（ハ）のように、リング状部材３の両端部を連
結自在にする各種形状の接続部材あるいはスペーサーか
ら構成してあるものを採用しても良い。また、前記内溝
部２２や外溝部１２は、一つの柱状体の接続構造内に複
数設けてあっても良い。このとき、前記実施の形態１−
３、実施の形態２−３に対応する形態を考えるには、例
えば外溝部１２を前記内側柱部１１の先端側のものほど
幅狭に形成するとともに、前記内溝部２２を前記外側管
部２１の先端側のものほど幅広に形成しておき、さら
に、それぞれの内溝部２２と外溝部１２とが対向させら
れるように形成しておき、前記内溝部２２を、それぞ
れ、その溝幅に対応するリング状部材３を収容可能な深
さに形成してあればよい。このような場合、前記幅広の
内溝部２２に収容されるリング状部材３は、前記幅狭の
外溝部１２を乗り越え幅広の外溝部１２に達するととも
に、前記幅狭の外溝部１２は、前記幅広の内溝部２２に
収容されたリング状部材３３が係合することなく前記幅
狭の内溝部２２に達し、それぞれ対応する内溝部２２と
外溝部１２とがそれぞれ、対応するリング状部材３３を
係合状態で保持することになり、強固で確実な係合構造
を提供することができる。このような構成は、もちろん
内溝部１１と外溝部１２との役割が逆になっている場合
にも適用できる。さらに、内側柱部１１と外側管部２１
の形成方法は溶接に限らず第一、第二柱状体の端部を互
いに嵌合自在に形成して、内側柱部１１と外側管部２１
とを直接形成しても良い。尚、強度上問題がある場合、
その部分を焼入れ強化しても良い。また、図１７に示す
ように、一対の外側管部２１の双方にそれぞれ嵌入自在
な内側柱部１１を一対設けた中継ぎ管７を設け、互いに
接続する構成を採用しても良く、逆に、一対の内側柱部
１１の双方にそれぞれ嵌合自在な中継ぎ管を設け互いに
接続する構成を採用しても良い。尚、柱状体の接続構造
を形成した後の外面は、平坦な面に形成することが望ま
しいが、本発明は、柱状体の接続構造を形成した後の外
面が凹凸形状になることを妨げるものではない。また、
柱状体の接続構造における前記内側柱部１１と外側管部
２１の接当面のうち、内側柱部１１の外周面と、外側管
部２１の内周面とは、それぞれ、先端側ほど薄肉になる
テーパー面１１ａに形成してあっても良い（図１９参
照）し、外側管部２１の先端部と内側柱部１１の基端部
との接当面などに水密性を高めたり、がたつき防止をす
るための、スペーサーを介在させてあっても良い（図１
８参照）。このスペーサーには、ゴム、樹脂、金属板等
を採用することが出来る。また、このような接当面は、
図１９に示すように、互いに凹凸嵌合する形状に形成し
ておき、より強固な係合構造を発揮させることもでき
る。リング状部材３の厚さは、前記外溝部１２の幅より
もやや小さく形成してあってもよく（図２０参照）、前
記柱状体の接続構造が全体としてたわみ変形容易な構成
にしてある。また、前記内溝部２２における側面や（図
外）、前記外溝部１２における側面を入り口側ほど幅広
になるテーパー角部１２ｄに形成してあってもよく（図
２１参照）、このようにしてあれば、前記内溝部２２と
外溝部１２とを互いに対向させ、前記リング状部材３を
前記テーパー角部に圧接させながら、前記溝部に圧入す
ることによって、前記リング状部材３の圧入力を、前記
柱状体同士の圧接力に変換することが出来、前記柱状体
同士を圧接した状態に接続することが出来る。そのた
め、前記柱状体同士は、がたつきにくい状態で接続でき
る。[Another Embodiment] Another embodiment will be described below. The ring-shaped member 3 interposed between the first columnar body 1 and the second columnar body is not limited to the shape of the C-ring 31 or the split ring 32.
The C-ring 31 may be provided with engaging portions that can engage with each other at both ends and formed into an O-ring shape whose diameter can be changed (see FIG. 16A). This is called a ring-shaped member 3. Further, the through-hole 4 for performing the diameter changing operation of the C-ring 31 and the retracting operation of the split ring 32 is not always necessary. For example, the spacer 51 is heated and melted as in Embodiment 1-1. In such a case, there is no need to heat from the through-hole 4 in particular, so that the outer tube portion 21 may be heated in its entirety, or from the fitting margin between the inner column portion 11 and the outer tube portion 21, The heating wire for heating and melting the spacer 51 is drawn out and connected, and the heating and melting operation is performed from the heating wire to obtain the C
A form in which the diameter changing operation of the ring 31 may be performed. As described above, the diameter changing operation is performed by the inner column portion 11 and the outer tube portion 21.
In such a case, the through hole 4 and the heating wire are collectively referred to as an operation unit A. When the spacer 51 is interposed in the opening 31a of the C-ring 31, the C-ring 31 is expanded in diameter and the operating portion A
A bolt may be provided so as to be able to release the interposition (see FIG. 22), and is collectively referred to as the enlarged-diameter state holding portion 5 including the engaging portion and the like exemplified in the O-ring shape. Conversely, the diameter of the connection member 61 and the diameter-reduced state holding portion 6 including the engagement portion illustrated in the O-ring shape are collectively referred to. FIG. 16 shows the enlarged diameter holding section 5 and the reduced diameter holding section 6.
As shown in (b) and (c), a ring-shaped member 3 may be formed of a connecting member or a spacer of various shapes which allows both ends of the ring-shaped member 3 to be freely connected. Further, a plurality of the inner groove portions 22 and the outer groove portions 12 may be provided in a single columnar connection structure. At this time, the embodiment 1-
3. In order to consider a mode corresponding to the embodiment 2-3, for example, the outer groove 12 is formed so as to be narrower on the tip side of the inner column 11 and the inner groove 22 is formed as the outer tube 21. The inner groove 22 is formed to be wider as it is closer to the tip, and is further formed so that each inner groove 22 and the outer groove 12 are opposed to each other. What is necessary is just to form it in the depth which can accommodate the ring-shaped member 3. In such a case, the ring-shaped member 3 accommodated in the wide inner groove portion 22 gets over the narrow outer groove portion 12 and reaches the wide outer groove portion 12, and the narrow outer groove portion 12 The ring-shaped member 33 accommodated in the inner groove portion 22 of the second member reaches the narrow inner groove portion 22 without being engaged, and the corresponding inner groove portion 22 and outer groove portion 12 respectively engage the corresponding ring-shaped member 33. The engagement state is maintained, and a strong and reliable engagement structure can be provided. Such a configuration can be applied to the case where the roles of the inner groove 11 and the outer groove 12 are reversed. Further, the inner pillar portion 11 and the outer tube portion 21
The method of forming is not limited to welding, and the end portions of the first and second columnar bodies are formed so as to be freely fitted to each other, and the inner column portion 11 and the outer tube portion 21 are formed.
May be directly formed. If there is a problem in strength,
The part may be quenched and strengthened. As shown in FIG. 17, a configuration may be adopted in which the intermediate pipes 7 each having a pair of inner pillars 11 that can be inserted into both of the pair of outer pipes 21 are provided and connected to each other. It is also possible to adopt a configuration in which a joint pipe that can be fitted is provided on both of the pair of inner pillars 11 and connected to each other. It is preferable that the outer surface after the connection structure of the columnar body is formed to be a flat surface. However, the present invention prevents the outer surface after the formation of the connection structure of the columnar body from becoming uneven. is not. Also,
The outer peripheral surface of the inner column portion 11 and the inner peripheral surface of the outer tube portion 21 of the contact surface between the inner column portion 11 and the outer tube portion 21 in the connection structure of the columnar body become thinner toward the distal end. It may be formed on the tapered surface 11a (see FIG. 19), and it is possible to increase watertightness on a contact surface between the distal end portion of the outer tube portion 21 and the base end portion of the inner column portion 11 or to prevent rattling. Spacers may be interposed to perform
8). Rubber, resin, metal plate, or the like can be used for the spacer. Also, such contact surface,
As shown in FIG. 19, it is also possible to form a shape that fits into and out of the recess and protrusion, and to exert a stronger engagement structure. The thickness of the ring-shaped member 3 may be slightly smaller than the width of the outer groove portion 12 (see FIG. 20), and the connection structure of the columnar members as a whole is easily bent and deformed. Alternatively, the side surface of the inner groove portion 22 (not shown) or the side surface of the outer groove portion 12 may be formed in a tapered corner portion 12d which becomes wider toward the entrance (see FIG. 21). For example, the inner groove portion 22 and the outer groove portion 12 are opposed to each other, and the ring-shaped member 3 is pressed into the groove while being pressed against the tapered corner portion. The pressure can be converted into a pressure contact force between the columnar bodies, and the columnar bodies can be connected in a pressure-contact state. Therefore, the columnar bodies can be connected to each other in a state in which the columnar bodies are hard to rattle.

【００２８】また、実施の形態１−１では、溝部１２，
２２とリング状部材３との間に充填剤ａを充填してがた
つきを防止可能に構成したが、リング状部材３に十分な
信頼性があれば特に必須のものではなく、実施の形態１
−２以下に示した構成であっても良い。尚、硬化性の充
填剤ａを用いれば、リング状部材３のがたつきを防止す
ることが出来るし、その硬化後の強度が十分あれば、柱
状体の接続構造の補強にも利用することが出来る。ま
た、充填剤ａとして、錆止め剤や、水密性保持剤を充填
して、気密性や耐腐食性を向上させ、耐久性を向上させ
ることも可能である。Also, in the embodiment 1-1, the grooves 12,
Although a filler a is filled between the ring member 22 and the ring-shaped member 3 to prevent rattling, it is not particularly essential if the ring-shaped member 3 has sufficient reliability. 1
-2 The following configuration may be used. If the curable filler a is used, it is possible to prevent rattling of the ring-shaped member 3, and if the strength after curing is sufficient, the ring-shaped member 3 may be used for reinforcing the connection structure of the columnar body. Can be done. Further, it is also possible to improve the airtightness and corrosion resistance and improve the durability by filling a rust inhibitor or a water tightness retaining agent as the filler a.

【００２９】また、実施の形態１−３、２−３において
は貫通孔４は必ずしも必要ではなく、先述の充填剤ａを
充填するような場合にあれば良い。尚、充填剤ａの必要
ない場合等には貫通孔を設けない方が柱状体の強度面で
好ましい。Further, in the embodiments 1-3 and 2-3, the through holes 4 are not necessarily required, and it is sufficient if the above-mentioned filler a is filled. In the case where the filler a is not required, it is preferable not to provide the through-hole from the viewpoint of the strength of the columnar body.

【００３０】尚、本発明にいう内側柱部及び外側管部と
称するものは、いずれが第一柱状体に接続されていて
も、他方が第二柱状体に接続されていれば良く、このよ
うな状態を「振り分けて設け」たものと称する。The term “inner column portion” and “outer tube portion” according to the present invention may be connected to the first columnar member, or the other may be connected to the second columnar member. Is referred to as “distributed and provided”.

【００３１】尚、特許請求の範囲の項に、図面との対照
を便利にするために符号を記すが、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。In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

【図面の簡単な説明】[Brief description of the drawings]

【図１】柱状体の接続方法を示す工程図FIG. 1 is a process diagram showing a method of connecting a columnar body.

【図２】柱状体の接続構造におけるリング状部材の状態
説明図FIG. 2 is an explanatory view of a state of a ring-shaped member in a connection structure of a columnar body.

【図３】柱状体の接続方法を示す工程図FIG. 3 is a process chart showing a method of connecting a columnar body.

【図４】柱状体の接続構造におけるリング状部材の状態
説明図FIG. 4 is an explanatory diagram of a state of a ring-shaped member in a connection structure of a columnar body.

【図５】柱状体の接続方法を示す工程図FIG. 5 is a process chart showing a method of connecting a columnar body.

【図６】柱状体の接続構造におけるリング状部材の状態
説明図FIG. 6 is an explanatory view of a state of a ring-shaped member in a connection structure of a columnar body.

【図７】柱状体の接続方法を示す工程図FIG. 7 is a process chart showing a method of connecting a columnar body.

【図８】柱状体の接続構造におけるリング状部材の状態
説明図FIG. 8 is an explanatory view of a state of a ring-shaped member in a connection structure of a columnar body.

【図９】柱状体の接続方法を示す工程図FIG. 9 is a process chart showing a method of connecting a columnar body.

【図１０】柱状体の接続構造におけるリング状部材の状
態説明図FIG. 10 is an explanatory view of a state of a ring-shaped member in a connection structure of a columnar body.

【図１１】柱状体の接続方法を示す工程図FIG. 11 is a process chart showing a method of connecting a columnar body.

【図１２】柱状体の接続構造におけるリング状部材の状
態説明図FIG. 12 is an explanatory diagram of a state of a ring-shaped member in a connection structure of a columnar body.

【図１３】柱状体の接続方法を示す工程図FIG. 13 is a process chart showing a method of connecting a columnar body.

【図１４】柱状体の接続方法を示す工程図FIG. 14 is a process chart showing a method of connecting columnar bodies.

【図１５】柱状体の接続構造におけるリング状部材の状
態説明図FIG. 15 is an explanatory diagram of a state of a ring-shaped member in a connection structure of a columnar body.

【図１６】別実施例の要部説明図FIG. 16 is an explanatory view of a main part of another embodiment.

【図１７】別実施例の要部説明図FIG. 17 is an explanatory view of a main part of another embodiment.

【図１８】別実施例の要部説明図FIG. 18 is an explanatory view of a main part of another embodiment.

【図１９】別実施例の要部説明図FIG. 19 is an explanatory view of a main part of another embodiment.

【図２０】別実施例の要部説明図FIG. 20 is an explanatory view of a main part of another embodiment.

【図２１】別実施例の要部説明図FIG. 21 is an explanatory view of a main part of another embodiment.

【図２２】別実施例の要部説明図FIG. 22 is an explanatory view of a main part of another embodiment.

【符号の説明】[Explanation of symbols]

１ 第一柱状体 ２ 第二柱状体 １１ 内側柱部 ２１ 外側管部 １２ 外溝部 ２２ 内溝部 ３ リング状部材 DESCRIPTION OF SYMBOLS 1 1st pillar-shaped body 2 2nd pillar-shaped body 11 inner pillar part 21 outer tube part 12 outer groove part 22 inner groove part 3 ring-shaped member

Claims (6)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 両端部に、内側柱部（１１）と外側管部
（２１）とを振り分けて設けた柱状体であって、 前記内側柱部（１１）と外側管部（２１）とを、異なる
柱状体同士の間で嵌合連結可能に構成するとともに、前
記内側柱部（１１）の外周面に環状の外溝部（１２）を
少なくとも１カ所設けるとともに、前記外側管部（２
１）の内周面に環状の内溝部（２２）を少なくとも１カ
所設け、 径変化自在なリング状部材を、前記外溝部（１２）もし
くは内溝部（２２）の入り口から奥に引退した状態に収
容可能に形成し、 前記内側柱部（１１）を異なる柱状体の外側管部（２
１）に嵌入した状態で、前記リング状部材（３）を、前
記外溝部（１２）と前記異なる柱状体の内溝部（２２）
との両者間にわたって介在して、その両者に係合状態に
保持可能に前記外溝部（１２）もしくは内溝部（２２）
のうち、前記リング状部材（３）を収容可能な側に取り
付け、前記外側管部（２１）の前記内溝部（２２）に、
前記外側管部（２１）の内外に連通する貫通孔を設け
て、前記リング状部材（３）を径変化操作する操作部
（Ａ）を設けてある柱状体。To 1. A both end portions, the inner side pillar portion (11) the outer tube section (21) and a columnar body which is provided distributes, the inner pillar part (11) an outer tube portion (21) Are formed so as to be able to be fitted and connected between different columnar bodies, and at least one annular outer groove portion (12) is provided on the outer peripheral surface of the inner column portion (11), and the outer tube portion (2) is provided.
At least one annular inner groove portion (22) is provided on the inner peripheral surface of 1), and the ring-shaped member whose diameter can be changed is retracted deep from the entrance of the outer groove portion (12) or the inner groove portion (22). The inner column (11) is formed so as to be accommodated, and the outer column (2)
When the ring-shaped member (3) is fitted in 1), the outer groove portion (12) and the inner groove portion (22) of the columnar body different from the outer groove portion (12).
The outer groove (12) or the inner groove (22) so as to be interposed between them and to be held in an engaged state.
Of the outer tube (21), the inner groove (22) of the outer tube (21)
A through-hole communicating with the inside and outside of the outer tube (21) is provided.
Operating section for changing the diameter of the ring-shaped member (3)
A columnar body provided with (A) . 【請求項２】 前記リング状部材（３）がＣリングであ
る請求項１に記載の柱状体。 2. A column according to claim 1, wherein said ring-shaped member is a C-ring. 【請求項３】 前記リング状部材（３）が、周方向に複
数に分割してある環状体である請求項１に記載の柱状
体。 3. The columnar body according to claim 1, wherein said ring-shaped member (3) is an annular body divided into a plurality in the circumferential direction. 【請求項４】 前記内側柱部（１１）の外周面と外側管
部（２１）の内周面とをテーパー面に形成してある請求
項１〜３のいずれか１項に記載の柱状体。4. The columnar body according to claim 1, wherein an outer peripheral surface of the inner column portion (11) and an inner peripheral surface of the outer tube portion (21) are formed as tapered surfaces. . 【請求項５】 前記外溝部（１２）における前記内側柱
部（１１）の端部側もしくは、前記内溝部（２２）にお
ける前記外側管部（２１）の端部側のすくなくともいず
れか一方にテーパー角部（１２ｄ）を形成してある請求
項１〜４のいずれか１項に記載の柱状体。 Wherein said inner pillar part in the outer groove (12) (11) end portion side or the, at least either one tapered end portion side of the outer tube portion (21) within said groove (22) The columnar body according to any one of claims 1 to 4, wherein a corner portion (12d) is formed. 【請求項６】 第一柱状体（１）の一端部と第二柱状体
（２）の一端部とに、内側柱部（１１）と外側管部（２
１）とを振り分けて設け、その内側柱部（１１）と外側
管部（２１）とを互いに接続した柱状体の接続構造であ
って、前記内側柱部（１１）の外周面に環状の外溝部
（１２）を少なくとも１カ所設けるとともに、前記外側
管部（２１）の内周面に環状の内溝部（２２）を少なく
とも１カ所設け、 径変化自在で、前記外溝部（１２）もしくは内溝部（２
２）の入り口から奥に引退した状態に収容可能なリング
状部材（３）を設け、前記外側管部（２１）の前記内溝部（２２）に、前記外
側管部（２１）の内外に連通する貫通孔を設けて、前記
リング状部材（３）を径変化操作する操作部（Ａ）を設
け、 前記内側柱部（１１）を前記外側管部（２１）に嵌入し
た状態で、前記操作部（Ａ）から前記リング状部材
（３）を、径変化操作して前記外溝部（１２）と前記内
溝部（２２）との両者間にわたって介在させて、その両
者に係合状態に保持してある柱状体の接続構造。 6. The one end portion of the one end portion and the second columnar bodies of the first columnar body (1) (2), the inner side pillar portion (11) and the outer pipe part (2
1), and the inner column (11) and the outer tube (21) are connected to each other in a columnar connection structure, and the outer surface of the inner column (11) has an annular outer surface. At least one groove (12) is provided, and at least one annular inner groove (22) is provided on the inner peripheral surface of the outer tube (21). The outer groove (12) or the inner groove is variable in diameter. (2
A ring-shaped member (3) that can be accommodated in a state of being retracted deep from the entrance of 2) is provided, and the outer groove (22) of the outer pipe (21) is provided in the inner groove (22).
By providing a through hole communicating with the inside and outside of the side tube portion (21),
An operation unit (A) for changing the diameter of the ring-shaped member (3) is provided.
In the state where the inner column (11) is fitted into the outer tube (21), the ring-shaped member (3) is changed in diameter from the operating part (A) to the outer groove (12). connection structure of columnar body interposed therebetween over between them, it is held in engagement on both of the groove portion (22) and.
JP18963397A 1997-07-15 1997-07-15 Columns and connection structure of columns Expired - Lifetime JP3158081B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP18963397A JP3158081B2 (en) 1997-07-15 1997-07-15 Columns and connection structure of columns
JP2000078706A JP3459805B2 (en) 1997-07-15 2000-03-21 Pillar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18963397A JP3158081B2 (en) 1997-07-15 1997-07-15 Columns and connection structure of columns

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP2000078706A Division JP3459805B2 (en) 1997-07-15 2000-03-21 Pillar
JP2000078705A Division JP2000290999A (en) 2000-01-01 2000-03-21 Columnar body and connecting structure therefor

Publications (2)

Publication Number Publication Date
JPH1136285A JPH1136285A (en) 1999-02-09
JP3158081B2 true JP3158081B2 (en) 2001-04-23

Family

ID=16244570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18963397A Expired - Lifetime JP3158081B2 (en) 1997-07-15 1997-07-15 Columns and connection structure of columns

Country Status (1)

Country Link
JP (1) JP3158081B2 (en)

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