JPS56136246A - Frame for bicycle - Google Patents

Frame for bicycle

Info

Publication number
JPS56136246A
JPS56136246A JP3900880A JP3900880A JPS56136246A JP S56136246 A JPS56136246 A JP S56136246A JP 3900880 A JP3900880 A JP 3900880A JP 3900880 A JP3900880 A JP 3900880A JP S56136246 A JPS56136246 A JP S56136246A
Authority
JP
Japan
Prior art keywords
bulged
pipe
parts
bearing holding
head part
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
Application number
JP3900880A
Other languages
Japanese (ja)
Other versions
JPS5933050B2 (en
Inventor
Kikuzo Takamiya
Hiroshi Todoroki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Cycle Co Ltd
Original Assignee
Bridgestone Cycle Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bridgestone Cycle Co Ltd filed Critical Bridgestone Cycle Co Ltd
Priority to JP3900880A priority Critical patent/JPS5933050B2/en
Publication of JPS56136246A publication Critical patent/JPS56136246A/en
Publication of JPS5933050B2 publication Critical patent/JPS5933050B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Motorcycle And Bicycle Frame (AREA)

Abstract

PURPOSE: To improve strength and production efficiency by forming upper and lower bearing holding parts by the use of a blank material pipe provided with bulged parts and connecting a main frame thereto.
CONSTITUTION: A blank material pipe A which is provided with bulged parts 2, 3 at the top and bottom in one end part of the pipe is used. The top plate part of the upper bulged part 2 is punched with a drill 5, and an upper cup 7 is press-fitted into this hole 6, whereby the upper bearing holding part of the head part is formed. The bottom plate part of the lower bulged part 3 is likewise punched and a lower cup 9 is press-fitted into this hole 8, whereby the lower bearing holding part of the head part is formed. The pressed end part 4 of the pipe A on these upper and lower bulged parts 2, 3 sides is cut to form a head part 10. With the straight part 1 of the pipe A on the opposite side connecting to this head part 10 as a main frame, the frame for bicycles is integrally formed.
COPYRIGHT: (C)1981,JPO&Japio
JP3900880A 1980-03-28 1980-03-28 motorcycle frame Expired JPS5933050B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3900880A JPS5933050B2 (en) 1980-03-28 1980-03-28 motorcycle frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3900880A JPS5933050B2 (en) 1980-03-28 1980-03-28 motorcycle frame

Publications (2)

Publication Number Publication Date
JPS56136246A true JPS56136246A (en) 1981-10-24
JPS5933050B2 JPS5933050B2 (en) 1984-08-13

Family

ID=12541072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3900880A Expired JPS5933050B2 (en) 1980-03-28 1980-03-28 motorcycle frame

Country Status (1)

Country Link
JP (1) JPS5933050B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59140983U (en) * 1983-03-11 1984-09-20 スズキ株式会社 Motorcycle frame head pipe
JPS6076487A (en) * 1983-09-30 1985-04-30 宮田工業株式会社 Manufacture of frame for two-wheel barrow
US4541648A (en) * 1982-04-08 1985-09-17 Bridgestone Cycle Co., Ltd. Bicycle frame
JPS6150086U (en) * 1985-09-12 1986-04-04

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541648A (en) * 1982-04-08 1985-09-17 Bridgestone Cycle Co., Ltd. Bicycle frame
JPS59140983U (en) * 1983-03-11 1984-09-20 スズキ株式会社 Motorcycle frame head pipe
JPS6076487A (en) * 1983-09-30 1985-04-30 宮田工業株式会社 Manufacture of frame for two-wheel barrow
JPH0315595B2 (en) * 1983-09-30 1991-03-01 Myata Kogyo Kk
JPS6150086U (en) * 1985-09-12 1986-04-04
JPS6228543Y2 (en) * 1985-09-12 1987-07-22

Also Published As

Publication number Publication date
JPS5933050B2 (en) 1984-08-13

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