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11. 发明专利

JPS61259841A HYDRAULIC BULGE FORMING METHOD OF SEAT LUG HAVING SEAT STAY REST 失效
公开(公告)号：JPS61259841A
公开(公告)日：1986-11-18
申请号：JP9952385
申请日：1985-05-13
申请人： KIMURA KOJI
发明人： KIMURA KOJI
IPC分类号： B21D26/037 , B21D26/041 , B21D26/043
摘要： PURPOSE:To improve production efficiency and to reduce cost by forming three bulging projections to a pipe material and using one thereof for engaging an upper pipe and the remaining two as apertures to accept the top end of a seat stay. CONSTITUTION:Working fluid 11 is fed by an oil feed pump 13 through an oil introducing hole running the center of pistons 15, 15a into the pipe material in segmental dies 20 to fill the inside of said dies. Both ends of the pipe material are tightly adhered and sealed at the same instant when both ends are pressed by the pistons 15, 15a. The oil pressure is increased by the effect of a high- pressure pump 14 so that the pipe material bulges and projects from the inside toward the recessed parts of the dies 20. The pipe material is thus bulged. A collar 22 is fixed by welding, etc. to the formed seat lug and is further slit including the seat lug body. The middle part between the bulging projections 4 and 5 for the seat stay (to be used as the housing and accepting ports to accept the top end of the seat stay) is slit as well.

12. 发明专利

JPS61253134A MANUFACTURE OF SEAT LUG WITH COLLAR PEDESTAL 失效
公开(公告)号：JPS61253134A
公开(公告)日：1986-11-11
申请号：JP9558585
申请日：1985-05-07
申请人： KIMURA KOJI
发明人： KIMURA KOJI
IPC分类号： B21D53/86 , B21C37/29 , B62K19/36
摘要： PURPOSE:To attain a simplification of manufacture and cost down for a seat lug with a collar pedestal by forming a swelled out projection by performing a hydraulic bulge forming, and thereafter obtaining a final product by performing a secondary work at a projection forming a pedestal. CONSTITUTION:A metallic raw material tube is inserted to a segmental die provided with recessed part corresponding to projections 3, 4 to be bulged out and thereby a raw material tube 2 having the desired projections 3, 4 is obtained by means of a hydraulic forming. At the secondary working, the end of the projection 3 is finished to an opening 3a with a special form, and after the end of the projection 4 is finished to a pedestal 4a, an upright cylinder 5 is fixed to the pedestal 4a by welding. And the pedestal 4a with the cylinder 5 fixed, is slitted to form both ears 7a, 7b. In consequence, the simplification of the manufacture and the cost down for the seat lug with a collar pedestal for an automobile is made feasible.

13. 发明专利

JPS6382891A MANUFACTURE OF FRONT FORK FOR BICYCLE CONSISTING OF CARBON FIBER COMPOSITE BODY 失效
公开(公告)号：JPS6382891A
公开(公告)日：1988-04-13
申请号：JP22609286
申请日：1986-09-26
申请人： KIMURA KOJI
发明人： KIMURA KOJI
IPC分类号： B62K21/02 , B62K19/16

14. 发明专利

JPS6352661A POWER APPARATUS USING ELECTROMAGNET 失效
公开(公告)号：JPS6352661A
公开(公告)日：1988-03-05
申请号：JP19477186
申请日：1986-08-20
申请人： KIMURA KOJI
发明人： KIMURA KOJI
摘要： PURPOSE:To obtain contractive movement, by connecting electromagnets with elastic bodies in the predetermined polarity direction to form a quadrangle. CONSTITUTION:Electromagnets A1-A4 are connected by elastic bodies P to form a quadrangle. With reference to the polarity of electromagnets A1 and A2, the inside of the quadrangle is for S-poles and the outside of it for N-poles. With reference to the polarity of electromagnets A3 and A4, the inside of the quadrangle is for N-poles and outside of it for S-poles. The electromagnets A1 and A2 repulse each other, while the electromagnets A3 and A4 repulse each other, too. On the other hand, the electromagnets A1 and A attract each other, while the electromagnets A2 and A3 each other, too. It is, therefore, possible to obtain the effect that contracts longitudinally.

15. 发明专利

JPS62267038A METHOD FOR PREPARING PRESS OF BOTH LUGS WITH SHARP EDGE OF SHEET LUG 失效
公开(公告)号：JPS62267038A
公开(公告)日：1987-11-19
申请号：JP10853386
申请日：1986-05-14
申请人： KIMURA KOJI
发明人： KIMURA KOJI
IPC分类号： B21D53/86 , B21D22/20 , B21D22/26
摘要： PURPOSE:To obtain the extremely precise title product by pressing a high class finishing blank in the prescribed man-hour upto the prescribed working rate, pressing for finish after piercing a projecting part and forming the peripheral side part in acute angle after shearing the peripheral bulging part in the prescribed shape. CONSTITUTION:The high class finishing blank in about 2mm thickness and about 130mm width is subjected to a drawing in three stages of about 60%, 85% and 88% by a die forming press and after piercing 2d the projecting part in the 4th stage, the peripheral side part 1e is subjected to a bending in the 5th stage. In the 6th stag the piercing part is subjected to a burring 2f. The peripheral side part 1g is subjected to a trimming and the peripheral side part is subjected to lug fittings 5a, 5b and sharp edging in the 8th stage. The peripheral side parts 5a, 5b are thereafter subjected to a bending and made the prescribed bicycle sheet lug 10. The product superior to a high class sheet lug can be manufactured inexpensively and beautifully by a lost wax method from sheet metal blank.

17. 发明专利

JPS62275887A MANUFACTURE OF CROWN-LESS FRONT FORK MADE OF LIGHT METAL 失效
公开(公告)号：JPS62275887A
公开(公告)日：1987-11-30
申请号：JP11718486
申请日：1986-05-23
申请人： KIMURA KOJI
发明人： KIMURA KOJI
IPC分类号： B62K21/02

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