JPS6047145B2 - Main frame for motorcycles - Google Patents
Main frame for motorcyclesInfo
- Publication number
- JPS6047145B2 JPS6047145B2 JP17667681A JP17667681A JPS6047145B2 JP S6047145 B2 JPS6047145 B2 JP S6047145B2 JP 17667681 A JP17667681 A JP 17667681A JP 17667681 A JP17667681 A JP 17667681A JP S6047145 B2 JPS6047145 B2 JP S6047145B2
- Authority
- JP
- Japan
- Prior art keywords
- material tube
- main frame
- hole
- tube
- motorcycles
- 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
Links
Landscapes
- Motorcycle And Bicycle Frame (AREA)
Description
【発明の詳細な説明】
本発明は自転車またはオートバイ等の二輪車用メインフ
レームに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a main frame for a two-wheeled vehicle such as a bicycle or a motorcycle.
従来の二輪車用メインフレームを形成するメインパイプ
は、通常そのメインパイプと接続するヘッドパイプおよ
び立パイプと別個の部材として形成されており、接続部
はラック等を介して溶接するか、あるいは鋳込み等の結
合方法で一体に構成されている。The main pipe that forms the conventional main frame for two-wheeled vehicles is usually formed as a separate member from the head pipe and vertical pipe that connect to the main pipe, and the connection part is welded through a rack or the like, or is made by casting, etc. It is integrally constructed using the following joining method.
しカルながら従来の方法はいずれも、接続部の構成部材
が加熱されるため、素材の熱変化による強度低下が生じ
たり、接合部材あるいは結合作業が複雑であるので生産
効率が悪いという欠点があつた。However, all of the conventional methods have the disadvantage that the component parts of the connection part are heated, resulting in a decrease in strength due to thermal changes in the material, and that production efficiency is poor because the joining parts or joining work is complicated. Ta.
本発明は上述の欠点を解消するためなされたも−ｊ−−
に−−゜れイ ブー 田フ１ノー′、のメインパイ
プとヘッドパイプおよび立パイプとの接続部を一体に形
成することにより、フレーム自体の強度を向上させると
共に、生産効率を向上させることを目的とするものであ
る。The present invention has been made to overcome the above-mentioned drawbacks.
By integrally forming the connections between the main pipe, head pipe, and vertical pipe, we are able to improve the strength of the frame itself and improve production efficiency. This is the purpose.
以下図面について本発明の実施例を説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図に示すパイプ１は加工前の素材管で、第２図はそ
の素材管１を本出願人が開発した二輪車用フレーム管の
成形方法（特願昭５５−３９００７号）、すなわち、半
円形断面の直線状凹陥部と、この直線状凹陥部の両側に
設けた膨出空所を有する一対の分割金型の前記直線状凹
陥部に素材管を挿入し、直線状凹陥部に挿入し得るベー
ス芯金の段付部と、パッチシャフトの段付部とにより前
記素材管を挾持し、この素材管をパンチシャフトで押圧
す・ると共に、この素材管の内部に高圧液を圧入するこ
とにより、素材管を膨出空所内に膨出成形する成形方法
によつて成形した二輪車用メインフレームの素材管を示
すもので、２は管１の両端部において、それぞれ上方に
突設した管状膨出部で、２フａはその各天板部、３は素
材管１の両押圧端部である。本発明においては第２図に
示す素材管を使用し、その各管状膨出部２の天板部２ａ
を穿孔して第３図に示すように孔４を形成し、ついでそ
の素５材管１の両押圧端部３を第４図に示すように扶り
レ ー取るように打ち抜き加工して窓部５を形成する。The pipe 1 shown in Fig. 1 is a raw material pipe before processing, and Fig. 2 shows the material pipe 1 in a molding method for frame pipes for two-wheeled vehicles developed by the present applicant (Japanese Patent Application No. 55-39007), that is, in half. A material tube is inserted into the linear recess of a pair of split molds having a linear recess with a circular cross section and a bulge space provided on both sides of the linear recess, and the material tube is inserted into the linear recess. The material tube is held between the stepped portion of the base core bar to be obtained and the stepped portion of the patch shaft, and the material tube is pressed by a punch shaft, and at the same time, high-pressure liquid is pressurized into the material tube. 2 shows a material tube for a main frame for a two-wheeled vehicle formed by a molding method in which the material tube is bulged into a bulge cavity, and 2 is a tube-shaped bulge provided upwardly at both ends of the tube 1. At the exit part, 2 fa is each top plate part thereof, and 3 is both pressed ends of the material tube 1. In the present invention, the material tube shown in FIG. 2 is used, and the top plate portion 2a of each tubular bulge 2 is
A hole 4 is formed by drilling a hole 4 as shown in FIG. Section 5 is formed.
つぎにこの素材管１の一方の孔４内に第５図に示すよう
にインナーバイブ６を圧入し、さらに第６図に示すよう
に上方膨出部２に上ワン７を圧入してヘッド部の上部ベ
アリング保持部を形成すると共に、下方膨出部２に下ワ
ン８を圧入してヘッド部の下部ベアリング保持部を形成
する。またその素材管１の他方の孔４内に立バイブ９を
挿入して固着する。第７図はこの二輪車用メインフレー
ムを使用した自転車の全体図である。以上のように構成
した本発明の二輪車用メインフレームによる作用効果は
次の通りである。Next, the inner vibe 6 is press-fitted into one hole 4 of the material tube 1 as shown in FIG. At the same time, the lower ring 8 is press-fitted into the downward bulging part 2 to form the lower bearing holding part of the head part. Further, a vertical vibrator 9 is inserted into the other hole 4 of the material tube 1 and fixed. FIG. 7 is an overall view of a bicycle using this two-wheeled vehicle main frame. The effects of the two-wheeled vehicle main frame of the present invention configured as described above are as follows.
（１）ヘッドバイブ接続部と立バイブ接続部を有するメ
インフレームを一本の素材管を冷間加工することによソ
ー体構造として得られるから、加熱溶着の熱変化に伴う
強度低下もなく、複雑な溶着工程を行う必要もなく、生
産効率を著しく向上させることができる。また部材離れ
による事故の心配もない上に、メインフレームの両端に
挿入するヘッドバイブと立バイブ間の寸法精，度も向上
する。（２）強度上重要なヘッド部はインナーバイブを
圧入して二重構造としたものであり、また立バイブとの
接続部もラックを必要としないから、従来の接合部に別
部品のラックを介在させたものより軽量で、より強い強
度が得られる。(1) Since the main frame having the head vibration connection part and the vertical vibration connection part is obtained as a saw body structure by cold working a single material tube, there is no decrease in strength due to thermal changes during heat welding. There is no need to perform a complicated welding process, and production efficiency can be significantly improved. In addition, there is no need to worry about accidents due to parts coming apart, and the dimensional precision and precision between the head vibrator and the vertical vibrator inserted into both ends of the main frame are improved. (2) The head part, which is important for strength, has a double structure by press-fitting the inner vibe, and the connection part with the vertical vibe does not require a rack, so a separate rack part is used in the conventional joint part. It is lighter and has greater strength than an interposed one.
（３）二重構造のヘッド部は窓部５の肉厚が段差となり
、恰も装飾ラグ等の模様のようになるから、自転車の外
観が向上する。(3) In the double-structured head section, the wall thickness of the window section 5 is stepped, resembling a pattern of a decorative rug, etc., thereby improving the appearance of the bicycle.
（４）二重構造のヘッド部は窓部５にインナーバイブ６
の表面が現われるから、インナーバイブの材質を例えば
ステンレス等にすれば、従来にない意匠効果のあるヘッ
ド部を得ることができる。(4) The double structure head part has an inner vibe 6 in the window part 5.
If the material of the inner vibe is made of stainless steel, for example, a head portion with an unprecedented design effect can be obtained.
第１図は本発明において使用する素材管を示す斜視図、
第２図はその素材管に膨突加工を施した状態を示す斜視
図、第３図および第４図は各加工工程を示す斜視図、第
５図はインナーバイブを挿入する状態を示す斜視図、第
６図は本発明メインフレームの完成状態を示す一部切欠
側面図、第７図は本発明メインフレームを使用した自転
車の全体を示す側面図である。
１・・・素材管、２・・・管状膨出部、２ａ・・・天板
部、３・・・押圧端部、４・・・孔、５・・・窓部、６
・・・インナーバイブ、７・・・上ワン、８・・・下ワ
ン、９・・・立バイブ。FIG. 1 is a perspective view showing a material tube used in the present invention;
Fig. 2 is a perspective view showing the material tube subjected to expansion processing, Figs. 3 and 4 are perspective views showing each processing step, and Fig. 5 is a perspective view showing the state in which the inner vibe is inserted. , FIG. 6 is a partially cutaway side view showing the completed state of the main frame of the present invention, and FIG. 7 is a side view showing the entire bicycle using the main frame of the present invention. DESCRIPTION OF SYMBOLS 1... Material tube, 2... Tubular swelling part, 2a... Top plate part, 3... Pressing end part, 4... Hole, 5... Window part, 6
...inner vibe, 7...top one, 8...bottom one, 9...standing vibe.
Claims (1)
成した素材管を使用し、その各管状膨出部の天板部を穿
孔して孔を形成すると共に、素材管の両押圧端部を打ち
抜いてそれぞれ窓部を形成し、この素材管の一方の孔内
にインナーパイプを圧入してヘッド部を形成すると共に
、素材管の他方の孔内に立パイプを挿入して固着するよ
うにした二輪車用メインフレーム。1. Using a material tube with upper and lower tubular bulges formed at both ends of the tube, the top plate of each of the tubular bulges is bored to form a hole, and both pressed ends of the material tube are A window portion was formed by punching out each material tube, and an inner pipe was press-fitted into one hole of the material tube to form a head portion, and a vertical pipe was inserted into the other hole of the material tube and fixed. Main frame for motorcycles.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17667681A JPS6047145B2 (en) | 1981-11-04 | 1981-11-04 | Main frame for motorcycles |
| US06/438,494 US4484756A (en) | 1981-11-04 | 1982-11-02 | Blank tube and main frame for two-wheeled vehicle |
| DE8282110178T DE3276355D1 (en) | 1981-11-04 | 1982-11-04 | Blank tube and main frame for a by bicycle |
| EP82110178A EP0078551B1 (en) | 1981-11-04 | 1982-11-04 | Blank tube and main frame for a by bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17667681A JPS6047145B2 (en) | 1981-11-04 | 1981-11-04 | Main frame for motorcycles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5878873A JPS5878873A (en) | 1983-05-12 |
| JPS6047145B2 true JPS6047145B2 (en) | 1985-10-19 |
Family
ID=16017770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17667681A Expired JPS6047145B2 (en) | 1981-11-04 | 1981-11-04 | Main frame for motorcycles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6047145B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6115686U (en) * | 1984-07-04 | 1986-01-29 | 本田技研工業株式会社 | motorcycle head pipe |
-
1981
- 1981-11-04 JP JP17667681A patent/JPS6047145B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5878873A (en) | 1983-05-12 |
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