JPH07164085A - Special shaped cross section tube - Google Patents
Special shaped cross section tubeInfo
- Publication number
- JPH07164085A JPH07164085A JP31771393A JP31771393A JPH07164085A JP H07164085 A JPH07164085 A JP H07164085A JP 31771393 A JP31771393 A JP 31771393A JP 31771393 A JP31771393 A JP 31771393A JP H07164085 A JPH07164085 A JP H07164085A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- section
- tube
- section tube
- shaped cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Extrusion Of Metal (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えばフラッグポー
ルや照明ポール等として使用される異形断面管に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modified cross-section tube used as, for example, a flag pole or an illumination pole.
【０００２】[0002]
【従来の技術】従来、旗を掲揚するためのフラッグポー
ル等として断面形状が円形で先端部が細くなったアルミ
ニウム製テーパ管が使用されていたが、外周面に凹凸が
ないために意匠性に乏しいという欠点があった。そこ
で、最近では、テーパ加工がしやすく意匠性にも富むこ
とから、図４に示されているように周方向に凹部（５
１）と凸部（５２）とが交互に繰り返されることにより
外殻が形成された異形断面の押出形材（５３）を、図６
のように基端部（５４）から先端部（５５）へ縮管して
製作したテーパ管（５６）を使用することが提案されて
いる。このテーパ管（５６）は、図５のように大径の基
端部（５４）側を地中に埋め込んで設置される。2. Description of the Related Art Conventionally, an aluminum taper tube having a circular cross section and a narrow tip has been used as a flag pole for displaying a flag. It had the drawback of being scarce. Therefore, recently, since it is easy to perform taper processing and is rich in designability, as shown in FIG.
The extruded profile (53) having an irregular cross section in which the outer shell is formed by alternately repeating 1) and the convex portion (52) is shown in FIG.
It has been proposed to use a tapered tube (56) manufactured by contracting the proximal end portion (54) to the distal end portion (55) as described above. This taper pipe (56) is installed by embedding the large diameter base end (54) side in the ground as shown in FIG.
【０００３】[0003]
【発明が解決しようとする課題】前述の押出形材（５
３）は、断面が異形形状であるために半径方向の強度が
弱く、小さい力で変形できテーパ加工がしやすいという
長所がある。しかし、その反面、図５および図６のよう
に、異形断面のテーパ管（５６）が風圧等の外力を受け
ると、外力方向に管径が縮むとともに外力と直交方向に
は管径が伸びて、テーパ管（５６）の断面が偏平になる
ような変形が起こりやすいという欠点がある。特に、フ
ラッグポール等は基端部（５４）側が固定されているた
めに、風圧により埋設部分と地上部分との境界部（５
７）に応力が集中する。その結果、テーパ管（５６）の
断面変形は境界部（５７）に集中的に発生し、さらには
境界部（５７）から折れ曲がるような変形が生じること
もあり、強度の点で問題があった。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
3) has an advantage that the strength in the radial direction is weak because the cross-section is irregular, and that it can be deformed with a small force and taper processing is easy. However, on the other hand, as shown in FIGS. 5 and 6, when the tapered pipe (56) having an irregular cross section receives an external force such as wind pressure, the pipe diameter shrinks in the external force direction and the pipe diameter extends in the direction orthogonal to the external force. However, there is a drawback that the tapered tube (56) is likely to be deformed so that its cross section becomes flat. In particular, since the flag pole and the like are fixed at the base end (54) side, the boundary (5
Stress concentrates on 7). As a result, the cross-sectional deformation of the taper pipe (56) is concentrated on the boundary portion (57), and further the bending deformation may occur from the boundary portion (57), which is a problem in terms of strength. .
【０００４】この発明は、前述の問題点を解決すること
を目的として、優れた強度を有する異形断面管を提供し
ようとするものである。The present invention is intended to solve the above-mentioned problems and to provide a modified cross-section tube having excellent strength.
【０００５】[0005]
【課題を解決するための手段】この発明の異形断面管
は、前記目的を達成するために、基本的に、凹部（１
２）と凸部（１３）とが周方向に交互に繰返されること
により外殻が形成された管材（１１）（２１）の内部
に、前記管材（１１）（２１）の中心から半径方向に放
射状に拡がる支持部（１６）と、この支持部（１６）の
先端に形成されて前記凸部（１３）に内接する当接片
（１７）とを有する補強材（１５）が、嵌入装着されて
なることを特徴とするものである。また、前記管材（２
１）の内壁に、前記補強材（１５）の当接片（１７）の
管材（２１）からの離反を妨げる突起（２２）が形成さ
れていることが好ましい。In order to achieve the above-mentioned object, a modified cross-section tube according to the present invention basically has a recess (1).
2) and the convex portion (13) are alternately repeated in the circumferential direction, and inside the pipe material (11) (21) in which an outer shell is formed, in the radial direction from the center of the pipe material (11) (21). A reinforcing member (15) having a support portion (16) radially expanding and a contact piece (17) formed at the tip of the support portion (16) and inscribed in the convex portion (13) is fitted and mounted. It is characterized by In addition, the pipe material (2
It is preferable that a projection (22) is formed on the inner wall of (1) to prevent the contact piece (17) of the reinforcing material (15) from being separated from the pipe material (21).
【０００６】この発明の異形断面管において、前記管材
（１１）（１２）はアルミニウム（その合金を含む）等
の金属製で、前述のような断面形状のものであれば、直
管でも、またその直管を縮管ないし拡管成形したテーパ
管のいずれでも良い。In the modified cross-section pipe of the present invention, the pipe material (11) (12) is made of a metal such as aluminum (including its alloy) and has a cross-sectional shape as described above. The straight pipe may be either a contracted pipe or a tapered pipe formed by expanding.
【０００７】また、前記管材（１１）（１２）の全長に
亘って補強材（１５）が装着されている必要はなく、異
形断面管の用途に応じて外部応力が集中して特に変形し
やすい部分に装着されていれば良い。また、変形しやす
い部分が複数あれば、複数の補強材を使用することがえ
きる。例えば、フラッグポールとして使用される異形断
面管であれば、外部応力が集中する地上部分と埋設部分
の境界部を中心に前記補強材（１５）を装着すれば良
い。Further, it is not necessary that the reinforcing material (15) is attached over the entire length of the pipe materials (11) and (12), and external stress is concentrated and is particularly likely to be deformed depending on the application of the modified cross-section pipe. It only has to be attached to the part. If there are a plurality of easily deformable portions, it is possible to use a plurality of reinforcing materials. For example, in the case of a modified cross-section pipe used as a flag pole, the reinforcing material (15) may be attached around the boundary between the ground portion and the buried portion where external stress concentrates.
【０００８】[0008]
【作用】異形断面管（１）（２）において、管材（１
１）（２１）の補強材（１５）が嵌入装着された部分に
周面から外力が加わると、外力方向にある凸部（１３）
は縮径方向に変形しようとして該凸部（１３）に内接す
る補強材（１５）の当接片（１７）に押付けられる。し
かし、前記当接片（１７）は管材（１１）（２１）の中
心から半径方向に放射状に拡がる支持部（１６）によっ
て支持されているため、周面からの外力に対しては非常
に強くほとんど変形しない。そのため、前記凸部（１
３）が当接片（１７）に押付けられてもそれ以上の変形
は起こらず、管材の（１１）（２１）の縮径方向の変形
が妨げられる。[Function] In the modified cross-section pipes (1) and (2), the pipe material (1
1) When an external force is applied from the peripheral surface to the portion of the reinforcing material (15) of (21) fitted and mounted, the convex portion (13) in the external force direction.
Is pressed against the abutting piece (17) of the reinforcing material (15) inscribed in the convex portion (13) in an attempt to deform in the diameter reducing direction. However, since the contact piece (17) is supported by the support portion (16) that radially extends from the center of the pipe material (11) (21), it is very strong against external force from the peripheral surface. Almost no deformation. Therefore, the convex portion (1
Even if 3) is pressed against the contact piece (17), further deformation does not occur, and deformation of the pipe materials (11) and (21) in the diameter reducing direction is prevented.
【０００９】また、管材（２１）の内壁に突起（２２）
が形成されている場合は、前記外力に対して、前述のよ
うに縮径方向の変形が妨げられるとともに、外力に対し
て直交方向にある凸部（１３）は拡径方向に変形しよう
として当接片（１７）から離れようとするが、当接片
（１７）は前記突起（２２）に拘束されているために該
凸部（１３）は当接片（１７）と離れることができず、
拡径方向においても管材の（２１）の変形が妨げられ
る。Further, a projection (22) is formed on the inner wall of the pipe material (21).
Is formed, the deformation in the radial contraction direction is hindered by the external force as described above, and the convex portion (13) in the direction orthogonal to the external force tries to deform in the radial expansion direction. Although it tries to separate from the contact piece (17), since the contact piece (17) is constrained by the protrusion (22), the protrusion (13) cannot be separated from the contact piece (17). ,
The deformation of the pipe material (21) is prevented even in the radial direction.
【００１０】[0010]
【実施例】次に、この発明の異形断面管の具体的実施例
について、図面を参照しつつ説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the modified cross-section tube of the present invention will be described with reference to the drawings.
【００１１】［第１実施例］図１および図２に示されて
いるのは、フラッグポールとして使用される異形断面管
（１）である。この異形断面管（１）において、符号
（１１）は周方向に湾入状の凹部（１２）とやや肉厚の
円弧状の凸部（１３）とが交互に繰返されることにより
外殻が形成されたＡｌ合金製の長尺のテーパ管である。
このテーパ管（１１）は、図５のテーパ管（５６）と同
様に、所定断面形状の押出形材を基端部（１１ａ）側か
ら所定寸法を残して先端部（１１ｂ）側へテーパ状に縮
管成形して製作されたものであり、基端部分が直管状と
なっている。また、符号（１５）は前記テーパ管（１
１）の基端部（１１ａ）側の直管部分に嵌入装着され
た、Ａｌ合金製押出形材からなる短尺の補強材である。
この補強材（１５）は、管材（１１）の中心から各凸部
（１３）に向かって半径方向に放射状に拡がった支持部
（１６）とこれらの支持部（１６）の先端に形成された
当接片（１７）とによって構成され、前記当接片（１
７）の外面は、前記凸部（１３）の内面に対応して円弧
面に形成されているとともに、該当接片（１７）がその
全長に亘って前記テーパ管（１１）の凸部（１３）に内
接した状態でテーパ管（１１）に装着されている。[First Embodiment] FIG. 1 and FIG. 2 show a modified cross-section tube (1) used as a flag pole. In this modified cross-section pipe (1), reference numeral (11) forms an outer shell by alternately repeating a concave recess (12) and a slightly thick arc-shaped protrusion (13) in the circumferential direction. And a long taper tube made of Al alloy.
Similar to the taper pipe (56) of FIG. 5, the taper pipe (11) is formed by extruding an extruded profile having a predetermined cross-sectional shape from the base end portion (11a) side to the tip end portion (11b) side while leaving a predetermined size. It was manufactured by shrinkage tube molding, and the base end part has a straight tube shape. Further, reference numeral (15) is the taper pipe (1
It is a short length reinforcing member made of an extruded aluminum alloy material, which is fitted and attached to the straight pipe portion on the base end (11a) side of 1).
The reinforcing material (15) is formed on the support portions (16) radially extending from the center of the pipe material (11) toward the respective convex portions (13) and the tips of these support portions (16). And the contact piece (1).
The outer surface of 7) is formed into an arcuate surface corresponding to the inner surface of the convex portion 13, and the corresponding contact piece 17 has the convex portion 13 of the tapered pipe 11 over its entire length. ) Is attached to the taper pipe (11).
【００１２】前記異形断面管（１）をフラッグポールと
して設置する際には、図１に示すように、前記補強材
（１５）を装着した部分の中央付近までを埋設し、該補
強材（１５）が異形断面管（１）の地上部分と埋設部分
とに跨がるようにする。When the modified cross-section pipe (1) is installed as a flag pole, as shown in FIG. 1, the reinforcing material (15) is buried up to the center of the portion where the reinforcing material (15) is mounted. ) Straddles the above-ground portion and the buried portion of the modified cross-section pipe (1).
【００１３】前述のように埋設された前記異形断面管
（１）の地表突出部分に、風圧等により図５に矢印
（Ｒ）で示すような外力が加わると、曲げモーメントに
よりテーパ管（１１）の埋設部分と地上部分との境界部
は、図６に矢印（Ｒ’）で示す反力を受け、テーパ管
（１１）は該境界部分で変形しようとする。しかし、反
力（Ｒ’）方向にある凸部（１３）の内壁が前記補強材
（１５）の当接片（１７）に当接して、テーパ管（１
１）の縮径方向の変形を妨げる。When an external force as shown by an arrow (R) in FIG. 5 is applied to the surface protruding portion of the irregular cross-section pipe (1) buried as described above due to wind pressure or the like, the bending moment causes the taper pipe (11). The boundary portion between the buried portion and the ground portion receives a reaction force indicated by an arrow (R ′) in FIG. 6, and the taper pipe (11) tends to deform at the boundary portion. However, the inner wall of the convex portion (13) in the reaction force (R ′) direction abuts on the abutment piece (17) of the reinforcing material (15), and the tapered pipe (1
It prevents the deformation in 1) in the radial direction.
【００１４】［第２実施例］図３に示されているこの実
施例の異形断面管（２）は、第１実施例の異形断面管
（１）とはテーパ管（２１）の内側形状のみが異なるも
のであるから、第１実施例と共通部分の説明は省略し、
異なる点についてのみ説明する。[Second Embodiment] The modified cross-section tube (2) of this embodiment shown in FIG. 3 is different from the modified cross-section tube (1) of the first embodiment only in the inner shape of the tapered tube (21). However, the description of the common parts with the first embodiment is omitted,
Only the different points will be described.
【００１５】前記テーパ管（２１）の各凸部（１３）を
挟む凹部（１２）の内壁に、周方向に突出する一対の対
向突起（２２）（２２）が形成されて、これらの突起
（２２）（２２）と凸部（１３）の内壁とが形成する空
間に、前記補強材（１５）の当接片（１７）が挿入され
ている。A pair of opposed projections (22) (22) projecting in the circumferential direction are formed on the inner wall of the recess (12) sandwiching each projection (13) of the taper tube (21), and these projections (22) and (22) are formed. 22) The contact piece (17) of the reinforcing material (15) is inserted into the space formed by the inner wall of the convex portion (13) and the inner wall of the convex portion (13).
【００１６】この実施例では、前記異形断面管（２）に
外力（Ｒ）が加わると、反力（Ｒ’）方向にある凸部
（１３）の内壁が補強材（１５）の当接片（１７）に当
接するとともに、前記反力（Ｒ’）に対して直交方向に
ある凸部（１３）では、該凸部（１３）が拡径方向に変
形しようとしても、前記突起（２２）が当接片（１７）
を拘束して凸部（１３）からの離反を妨げ、縮径方向お
よび拡径方向の両方向においてテーパ管（２１）の変形
を妨げる。In this embodiment, when an external force (R) is applied to the modified cross-section tube (2), the inner wall of the convex portion (13) in the reaction force (R ') direction causes the abutting piece of the reinforcing material (15). In the convex portion (13) that is in contact with the (17) and is orthogonal to the reaction force (R ′), even if the convex portion (13) tries to deform in the radial direction, the protrusion (22) Abutment piece (17)
To prevent the taper pipe (21) from being deformed in both the radial direction and the radial direction.
【００１７】なお、この発明の異形断面管（１）（２）
の補強材（１５）の形状は、前記各実施例のように、当
接片（１７）が支持部（１６）から周方向に突出したも
のに限定されるものではなく、支持部（１６）の周方向
の幅が外方向に連続的に広くなって支持部（１６）と当
接片（１７）とが明確に区別できないような形状のもの
でも良い。その場合、支持部（１６）の先端部分がこの
発明における当接片（１７）に相当する。The modified cross-section pipes (1) and (2) of the present invention
The shape of the reinforcing material (15) is not limited to the shape in which the abutting piece (17) projects in the circumferential direction from the supporting portion (16) as in the above-described embodiments, but the supporting portion (16) is not limited to this. It may be shaped such that the width in the circumferential direction is continuously widened in the outward direction and the support portion (16) and the contact piece (17) cannot be clearly distinguished. In that case, the tip portion of the support portion (16) corresponds to the contact piece (17) in the present invention.
【００１８】[0018]
【発明の効果】以上のように、この発明の異形断面管
は、凹部と凸部とが周方向に交互に繰返されることによ
り外殻が形成された管材の内部に、前記管材の中心から
半径方向に放射状に拡がる支持部と、この支持部の先端
に形成されて前記凸部に内接する当接片とを有する補強
材が、嵌入装着されてなるものであるから、前記管材の
変形しやすい部分に補強材を嵌入装着することにより縮
径方向の変形が妨げられて装着部分の強度が補填され、
優れた強度を有する異形断面管となる。As described above, according to the modified cross-section pipe of the present invention, the inside and outside of the pipe material having the outer shell formed by alternately repeating the concave portion and the convex portion in the circumferential direction, the radius from the center of the pipe material is increased. Since the reinforcing member having the supporting portion radially extending in the direction and the abutting piece formed at the tip of the supporting portion and inscribed in the convex portion is fitted and mounted, the pipe material is easily deformed. By inserting and attaching a reinforcing material to the portion, deformation in the diameter reducing direction is prevented and the strength of the attached portion is compensated,
The modified cross-section tube has excellent strength.
【００１９】また、前記管材の内壁に、前記補強材の当
接片の管材からの離反を妨げる突起が形成された構成と
することにより、前述の縮径方向の変形に加えて拡径方
向の変形も妨げられて、補強材の装着部分の強度を益々
向上できる。Further, the inner wall of the pipe member is formed with a projection for preventing separation of the abutment piece of the reinforcing member from the pipe member. Deformation is also hindered, and the strength of the mounting portion of the reinforcing material can be further improved.
【図１】この発明の第１および第２実施例にかかる異形
断面管の正面図である。FIG. 1 is a front view of a modified cross-section tube according to first and second embodiments of the present invention.
【図２】図１のＩＩ−ＩＩ断面視図である。FIG. 2 is a sectional view taken along the line II-II of FIG.
【図３】図１のＩＩＩ−ＩＩＩ断面視図である。3 is a sectional view taken along the line III-III in FIG.
【図４】テーパ管の材料となる押出基材の断面図であ
る。FIG. 4 is a cross-sectional view of an extruded base material used as a material for a tapered tube.
【図５】従来のフラッグポールの正面図である。FIG. 5 is a front view of a conventional flag pole.
【図６】図５のＶＩ−ＶＩ断面視図である。6 is a sectional view taken along line VI-VI in FIG.
１、２…異形断面管 １１、２１…管材（テーパ管） １２…凹部 １３…凸部 １５…補強材 １６…支持部 １７…当接片 ２２…突起 1, 2 ... Deformed cross-section pipe 11, 21 ... Pipe material (tapered pipe) 12 ... Recessed portion 13 ... Convex portion 15 ... Reinforcing material 16 ... Supporting portion 17 ... Abutting piece 22 ... Protrusion
Claims (2)
に交互に繰返されることにより外殻が形成された管材
（１１）（２１）の内部に、前記管材（１１）（２１）
の中心から半径方向に放射状に拡がる支持部（１６）
と、この支持部（１６）の先端に形成されて前記凸部
（１３）に内接する当接片（１７）とを有する補強材
（１５）が、嵌入装着されてなることを特徴とする異形
断面管。1. The pipe material (11) (21) inside a pipe material (11) (21) having an outer shell formed by alternately repeating concave portions (12) and convex portions (13) in the circumferential direction. )
(16) that extends radially from the center of the
And a reinforcing member (15) having a contact piece (17) formed at the tip of the supporting portion (16) and inscribed in the convex portion (13), and is fitted and mounted. Section tube.
（１５）の当接片（１７）の管材（２１）からの離反を
妨げる突起（２２）が形成されていることを特徴とする
請求項１に記載の異形断面管。2. A projection (22) is formed on an inner wall of the pipe material (21) to prevent the contact piece (17) of the reinforcing material (15) from being separated from the pipe material (21). The modified cross-section tube according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5317713A JP2736003B2 (en) | 1993-12-17 | 1993-12-17 | Deformed tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5317713A JP2736003B2 (en) | 1993-12-17 | 1993-12-17 | Deformed tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07164085A true JPH07164085A (en) | 1995-06-27 |
| JP2736003B2 JP2736003B2 (en) | 1998-04-02 |
Family
ID=18091206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5317713A Expired - Lifetime JP2736003B2 (en) | 1993-12-17 | 1993-12-17 | Deformed tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2736003B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5776911U (en) * | 1980-10-29 | 1982-05-12 | ||
| JPS62148022A (en) * | 1985-12-23 | 1987-07-02 | Kawasaki Steel Corp | Production of steel pipe for outer pipe of heat insulating clad pipe |
| JPH0214747A (en) * | 1988-06-30 | 1990-01-18 | Aichi Steel Works Ltd | Production of metallic honeycomb carrier |
| JPH05329534A (en) * | 1992-05-29 | 1993-12-14 | Showa Alum Corp | Manufacture of tapered tube |
-
1993
- 1993-12-17 JP JP5317713A patent/JP2736003B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5776911U (en) * | 1980-10-29 | 1982-05-12 | ||
| JPS62148022A (en) * | 1985-12-23 | 1987-07-02 | Kawasaki Steel Corp | Production of steel pipe for outer pipe of heat insulating clad pipe |
| JPH0214747A (en) * | 1988-06-30 | 1990-01-18 | Aichi Steel Works Ltd | Production of metallic honeycomb carrier |
| JPH05329534A (en) * | 1992-05-29 | 1993-12-14 | Showa Alum Corp | Manufacture of tapered tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2736003B2 (en) | 1998-04-02 |
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