JPS58196284U

JPS58196284U - Main frame for motorcycles

Info

Publication number: JPS58196284U
Application number: JP9367982U
Authority: JP
Inventors: 寛轟
Original assignee: ブリヂストンサイクル株式会社
Priority date: 1982-06-24
Filing date: 1982-06-24
Publication date: 1983-12-27
Also published as: JPH0421759Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は加工する以前のパイプの斜視図、第２図はパイ
プ素材を挿入した分割金型をプレスする状態を示す断面
図、第３図は素材管を成形する装置を示す断面図、第４
図はその分割金型内で膨出成形された素材管を示す斜視
図、第５図ａ”−ｄはその素材管のメインパイプ部の各
種断面形状を示す断面図、第６図は素材管の管状膨出部
に貫通孔を設けた状態を示す斜視図、第７図はその素材
管の押圧端部を削除した本考案のメインフレームの完成
状態を示す斜視図、第８図はその一方の貫通孔にヘッド
パイプを挿入する状態を示す斜視図、第９図はその他方
の貫通孔に立パイプを挿入した状態を示す斜視図、第１
０図は本考案の二輪車用メインフレーろを使用した自転
車の全体図である。１・・・通常のパイプ（素材管）、１′・・・成形後の
素材管、２・・・分割金型、２ａ・・・直線状凹陥部、
２ｂ・・・膨出空所、３・・・プレス、４・・・油圧シ
リンダ、４ａ・・・ピストン、４ｂ・・・パンチシャフ
ト、４ｃ・・・貫通孔、５・・・管状膨出部、６・・・
メインパイプ部、７・・・貫通孔、８・・・両押圧端部
、９・・・窓部、１ｏ・・・へ、ラドパイプ、１１・・
・立パイプ、Ｆ・・・本考案の二輪車用メインフレーム
。Fig. 1 is a perspective view of the pipe before processing, Fig. 2 is a sectional view showing the state in which a divided mold into which the pipe material is inserted is pressed, Fig. 3 is a sectional view showing the device for forming the material pipe, 4
The figure is a perspective view showing the raw material pipe that has been bulged in the split mold, Figures 5 a"-d are sectional views showing various cross-sectional shapes of the main pipe part of the raw material pipe, and Figure 6 is the raw material pipe. Fig. 7 is a perspective view showing the completed state of the main frame of the present invention with the pressing end of the material tube removed, and Fig. 8 is one side of the main frame. FIG. 9 is a perspective view showing the state in which the head pipe is inserted into the through hole of the other side; FIG. 9 is a perspective view showing the state in which the vertical pipe is inserted into the other through hole;
Figure 0 is an overall view of a bicycle using the main frame for two-wheeled vehicles of the present invention. 1... Ordinary pipe (material pipe), 1'... Material pipe after molding, 2... Divided mold, 2a... Straight recessed part,
2b...Bulging cavity, 3...Press, 4...Hydraulic cylinder, 4a...Piston, 4b...Punch shaft, 4c...Through hole, 5...Tubular swelling part , 6...
Main pipe part, 7... Through hole, 8... Both pressed ends, 9... Window part, 1o... To Rad pipe, 11...
・Vertical pipe, F... Main frame for motorcycles of this invention.

Claims

[Scope of utility model registration request]

A head pipe insertion part is formed integrally with the main pipe at the front end of the main pipe whose cross-sectional shape is an irregular shape such as an ellipse, and a vertical pipe insertion part is formed integrally with the main pipe at the rear end of the main pipe. A main frame for two-wheeled vehicles.