JPH0658318A - Coupling method of thin pipe and shaft - Google Patents
Coupling method of thin pipe and shaftInfo
- Publication number
- JPH0658318A JPH0658318A JP20814592A JP20814592A JPH0658318A JP H0658318 A JPH0658318 A JP H0658318A JP 20814592 A JP20814592 A JP 20814592A JP 20814592 A JP20814592 A JP 20814592A JP H0658318 A JPH0658318 A JP H0658318A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- thin
- walled
- pipe
- walled pipe
- 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.)
- Pending
Links
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
- Steering Controls (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
(57)【要約】
【目的】 薄肉管と軸を容易に結合できしかも結合部の
強度が安定して得られる薄肉管と軸の結合方法を提供す
る。
【構成】 薄肉管１１の一端に軸１２の一部１２ａを嵌
合して重合させ、この重合部Ａの外周に転造加工によっ
て所定形状の凹凸を形成して、前記薄肉管１１の内周と
前記軸１２の外周が凹凸嵌合するようにした。
(57) [Abstract] [PROBLEMS] To provide a method for connecting a thin-walled pipe and a shaft, which enables the thin-walled pipe and the shaft to be easily connected and the strength of the joint to be stably obtained. [Structure] A part 12a of a shaft 12 is fitted to one end of a thin-walled pipe 11 to be superposed, and a concavo-convex of a predetermined shape is formed on the outer periphery of the superposed portion A by a rolling process to form an inner periphery of the thin-walled pipe 11. The outer circumference of the shaft 12 is fitted in a concave-convex shape.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、薄肉管と軸の結合方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting a thin-walled pipe and a shaft.
【０００２】[0002]
【従来の技術】薄肉管と軸を結合してエネルギー吸収ス
テアリングシャフトとする技術は例えば特開昭６３−１
３６３４号公報に示されている。2. Description of the Related Art A technique for connecting a thin-walled tube and a shaft to form an energy absorbing steering shaft is disclosed in, for example, Japanese Patent Laid-Open No. 63-1
It is disclosed in Japanese Patent No. 3634.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記公報の
エネルギー吸収ステアリングシャフトにおいては、薄肉
管の一端に軸の一部を嵌合して重合させ、この重合部を
溶接によって結合するようにしているが、管が薄肉であ
るため溶接が難しく特殊技能を要求されるとともに、薄
肉管の一部が溶け落ちるなどして溶接部分の強度が安定
しない等の問題がある。本発明は、上記した問題に対処
すべくなされたものであり、薄肉管と軸を容易に結合で
きしかも結合部の強度が安定して得られる薄肉管と軸の
結合方法を提供することを目的としている。In the energy absorbing steering shaft disclosed in the above publication, a part of the shaft is fitted into one end of the thin-walled tube to cause polymerization, and the overlapped portion is joined by welding. However, since the pipe is thin, it is difficult to perform welding, special skill is required, and there is a problem that the strength of the welded part is not stable because part of the thin-walled pipe melts down. The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for connecting a thin-walled pipe and a shaft, which can easily connect the thin-walled pipe and the shaft and which can stably obtain the strength of the joint. I am trying.
【０００４】[0004]
【課題を解決するための手段】上記した目的を達成する
ために、本発明においては、薄肉管の一端に軸の一部を
嵌合して重合させ、この重合部の外周に転造加工によっ
て所定形状の凹凸を形成して、前記薄肉管の内周と前記
軸の外周が凹凸嵌合するようにした。In order to achieve the above-mentioned object, in the present invention, a part of a shaft is fitted to one end of a thin-walled pipe to polymerize the thin-walled pipe, and the outer periphery of the superposed portion is rolled by a rolling process. Concavities and convexities of a predetermined shape were formed so that the inner circumference of the thin-walled tube and the outer circumference of the shaft were fitted in a concavo-convex shape.
【０００５】[0005]
【発明の作用・効果】本発明による薄肉管と軸の結合方
法においては、薄肉管と軸の結合に特殊技能が要求され
ずしかも加工精度が安定して得られる転造加工を用いて
いるため、薄肉管と軸を容易に結合できるとともに、結
合部の強度が安定して得られ、生産効率が向上する。ま
た、転造加工に用いる転造型（ダイス）の形状を適宜に
変更することにより、薄肉管の内周と軸の外周間の凹凸
嵌合強度を適宜に変更することができ、薄肉管と軸の最
適な結合強度を的確に得ることができる。In the method of joining the thin-walled pipe and the shaft according to the present invention, since the rolling technique is used, which requires no special skill for joining the thin-walled pipe and the shaft, and the processing accuracy is stable. , The thin-walled pipe and the shaft can be easily connected, and the strength of the connecting portion can be stably obtained, so that the production efficiency is improved. Further, by appropriately changing the shape of the rolling die (die) used for the rolling process, it is possible to appropriately change the concave-convex fitting strength between the inner circumference of the thin-walled pipe and the outer circumference of the shaft. It is possible to accurately obtain the optimum bonding strength of.
【０００６】[0006]
【実施例】以下に、本発明の一実施例を図面に基づいて
説明する。図１及び図２は本発明による結合方法によっ
て結合されて作られたエネルギー吸収ステアリングシャ
フト構成体１０を示していて、このシャフト構成体１０
は薄肉鋼管１１と鋼製の軸１２によって構成されてい
る。薄肉鋼管１１は、肉厚が０．８mmの鋼管であり、中
間部分に蛇腹（図示省略）が形成されることもある。軸
１２は、薄肉鋼管１１内に嵌入する小径部１２ａを有し
た段付の軸であり、自在継手（図示省略）に連結される
ヨーク１２ｂをも一体的に有している。An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an energy-absorbing steering shaft structure 10 made by being combined by a connecting method according to the present invention.
Is composed of a thin-walled steel pipe 11 and a steel shaft 12. The thin steel pipe 11 is a steel pipe having a wall thickness of 0.8 mm, and a bellows (not shown) may be formed in the middle portion. The shaft 12 is a stepped shaft having a small diameter portion 12a fitted into the thin-walled steel pipe 11, and also integrally has a yoke 12b connected to a universal joint (not shown).
【０００７】しかして、薄肉鋼管１１と軸１２は、図３
及び図４にて示したように、薄肉鋼管１１の一端に軸１
２の小径部１２ａを嵌合して重合させる工程と、この重
合部Ａの外周に図５及び図６にて示したように一対の転
造型（ダイス）２０を用いた転造加工によって所定形状
の凹凸を形成する工程を経て結合されており、転造加工
によって図６にて示したように薄肉鋼管１１の内周と軸
１２の外周が凹凸嵌合するようになっている。Thus, the thin-walled steel pipe 11 and the shaft 12 are shown in FIG.
And as shown in FIG. 4, the shaft 1 is attached to one end of the thin-walled steel pipe 11.
A predetermined shape is formed by fitting the two small diameter portions 12a and superimposing them, and by rolling on the outer periphery of the superposed portion A using a pair of rolling dies (dies) 20 as shown in FIGS. Are joined together through the steps of forming the unevenness, and the inner circumference of the thin-walled steel pipe 11 and the outer circumference of the shaft 12 are fitted into the unevenness by rolling as shown in FIG.
【０００８】ところで、上記した薄肉鋼管１１と軸１２
の結合方法においては、薄肉鋼管１１と軸１２の結合に
特殊技能が要求されずしかも加工精度が安定して得られ
る転造加工を用いているため、薄肉鋼管１１と軸１２を
容易に結合できるとともに、結合部の強度が安定して得
られ、生産効率が向上する。また、転造加工に用いる転
造型（ダイス）２０の形状を適宜に変更することによ
り、薄肉鋼管１１の内周と軸１２の外周間の凹凸嵌合強
度（回転強度，曲げ強度，引張り強度等）を適宜に変更
することができ、薄肉鋼管１１と軸１２の最適な結合強
度を的確に得ることができる。By the way, the above-mentioned thin-walled steel pipe 11 and shaft 12
In the joining method of No. 3, since the rolling process that does not require special skill for joining the thin-walled steel pipe 11 and the shaft 12 and the stable working accuracy is obtained, the thin-walled steel pipe 11 and the shaft 12 can be easily joined. At the same time, the strength of the joint is stably obtained, and the production efficiency is improved. Further, by appropriately changing the shape of the rolling die (die) 20 used for the rolling process, the uneven fitting strength (rotational strength, bending strength, tensile strength, etc.) between the inner periphery of the thin-walled steel pipe 11 and the outer periphery of the shaft 12 can be changed. ) Can be changed as appropriate, and the optimum bonding strength between the thin-walled steel pipe 11 and the shaft 12 can be accurately obtained.
【０００９】上記実施例においては、薄肉鋼管１１と鋼
製の軸１２との結合方法として本発明を実施したが、本
発明は転造加工によって薄肉管の内周と軸の外周が凹凸
嵌合するものであれば実施でき、薄肉管と軸の素材は上
記実施例に限定されるものではない。In the above embodiment, the present invention was implemented as a method of connecting the thin-walled steel pipe 11 and the steel shaft 12 to each other. However, in the present invention, the inner circumference of the thin-walled pipe and the outer circumference of the shaft are unevenly fitted by rolling. The material of the thin wall tube and the shaft is not limited to the above-mentioned embodiment.
【図１】 本発明による結合方法によって結合されて作
られたエネルギー吸収ステアリングシャフト構成体の部
分破断側面図である。FIG. 1 is a partially cutaway side view of an energy absorbing steering shaft assembly made by joining by a joining method according to the present invention.
【図２】 図１の２−２線断面図である。FIG. 2 is a sectional view taken along line 2-2 of FIG.
【図３】 図３は薄肉鋼管の一端に軸の小径部を嵌合し
た状態の部分破断側面図である。FIG. 3 is a partially cutaway side view showing a state where a small diameter portion of a shaft is fitted to one end of a thin steel pipe.
【図４】 図３の４−４線断面図である。4 is a sectional view taken along line 4-4 of FIG.
【図５】 転造加工工程を概略的に示す図である。FIG. 5 is a diagram schematically showing a rolling process step.
【図６】 転造加工後の状態を示す断面図である。FIG. 6 is a cross-sectional view showing a state after the rolling process.
１０…シャフト構成体、１１…薄肉鋼管、１２…軸、１
２ａ…小径部、Ａ…重合部。10 ... Shaft structure, 11 ... Thin-walled steel pipe, 12 ... Shaft, 1
2a ... small diameter part, A ... overlapping part.
Claims (1)
させ、この重合部の外周に転造加工によって所定形状の
凹凸を形成して、前記薄肉管の内周と前記軸の外周が凹
凸嵌合するようにした薄肉管と軸の結合方法。1. A part of a shaft is fitted to one end of the thin-walled pipe to be superposed, and a concavo-convex of a predetermined shape is formed on the outer periphery of the superposed part by a rolling process to form an inner periphery of the thin-walled pipe and the shaft. A method of connecting a thin-walled pipe and a shaft so that the outer periphery of the shaft fits unevenly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20814592A JPH0658318A (en) | 1992-08-04 | 1992-08-04 | Coupling method of thin pipe and shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20814592A JPH0658318A (en) | 1992-08-04 | 1992-08-04 | Coupling method of thin pipe and shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0658318A true JPH0658318A (en) | 1994-03-01 |
Family
ID=16551385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20814592A Pending JPH0658318A (en) | 1992-08-04 | 1992-08-04 | Coupling method of thin pipe and shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0658318A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6711803B1 (en) * | 1998-12-25 | 2004-03-30 | Takashima Corporation | Method of joining steel products, method of processing junction surfaces of steel products, and reinforcing member |
-
1992
- 1992-08-04 JP JP20814592A patent/JPH0658318A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6711803B1 (en) * | 1998-12-25 | 2004-03-30 | Takashima Corporation | Method of joining steel products, method of processing junction surfaces of steel products, and reinforcing member |
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