JPS63139090U

JPS63139090U -

Info

Publication number: JPS63139090U
Application number: JP2891387U
Authority: JP
Priority date: 1987-03-02
Filing date: 1987-03-02
Publication date: 1988-09-13

Description

[Brief explanation of the drawing]

第１図は３個の継手（ラグ）を用い組立構成せ
る自転車パイプ・フレーム、第２図は連結管付ヘ
ツド・ラグ、第３図は連結管付シート・ラグ、第
４図は連結管付ハンガー・ラグ、第５図は連結管
をヘツド・ラグに取付けて溶接する予備作業図、
第６図は連結管取付け完成図、第７図はヘツド・
ラグの一つのラグに連結管を取付け且つラグ外部
に突設せる連結管にフレームとなるパイプの一端
を取付けてなる断面図、第８図は本考案になる自
転車前方三角状フレームの断面図を示す。１……上パイプ、２……下パイプ、３……立パ
イプ、４……ヘツド・ラグ、５……シート・ラグ
、６……ハンガー・ラグ、４ａ，４ｂ，５ａ，６
ａ，６ｃ，６ｄ，６ｇ……ラグ、４ｃ，４ｄ，５
ｂ，６ｂ，６ｅ，６ｆ……連結管、４ｅ，４ｆ，
４ｇ，４ｈ，１ａ，１ｂ……溶接用の穴、７……
ラグ先端とパイプ先端との継目。 Figure 1 shows a bicycle pipe frame assembled using three joints (lugs), Figure 2 shows a head lug with a connecting tube, Figure 3 shows a seat lug with a connecting tube, and Figure 4 shows a connecting tube. Hanger lug, Figure 5 is a preliminary work drawing for attaching and welding the connecting pipe to the head lug,
Figure 6 shows the completed connection pipe installation, Figure 7 shows the head and
A cross-sectional view showing a connecting pipe attached to one of the lugs and one end of the pipe forming the frame attached to the connecting pipe protruding from the outside of the lug. Figure 8 is a cross-sectional view of the bicycle front triangular frame according to the present invention. show. 1...Upper pipe, 2...Lower pipe, 3...Vertical pipe, 4...Head lug, 5...Seat lug, 6...Hanger lug, 4a, 4b, 5a, 6
a, 6c, 6d, 6g...lug, 4c, 4d, 5
b, 6b, 6e, 6f...connecting pipe, 4e, 4f,
4g, 4h, 1a, 1b... Hole for welding, 7...
The joint between the tip of the lug and the tip of the pipe.

Claims

[Scope of utility model registration request]

Aluminum or aluminum alloy head lugs, seat lugs and hangers for bicycles
Holes of any number and size are drilled around the outer wall of the cylindrical protruding lugs where the lugs engage with the end portions of aluminum or aluminum alloy frame pipes, respectively, and holes of any length are inserted tightly into the cylindrical protruding lugs. Prepare and insert a connecting pipe made of aluminum or aluminum alloy, respectively, and insert the MIG through the hole.
Alternatively, head lugs, seat lugs, and hanger lugs with connecting pipes are manufactured by inert gas arc welding using the TIG method, and any number of them can be similarly applied around the outer wall of the tip of the frame pipe. and drilling a hole of any size and inserting and engaging the connecting portion protruding from the outside of the lug with connecting pipe,
A bicycle body characterized in that the above-mentioned welding method is used to secure the bicycle body through the hole, and at the same time, the same welding is applied to the joint where the tip of each lug and the tip of each pipe contact each other in the same manner as described above. Constituent aluminum or aluminum alloy pipe frame.