JPH026807U

JPH026807U -

Info

Publication number: JPH026807U
Application number: JP8625588U
Authority: JP
Priority date: 1988-06-29
Filing date: 1988-06-29
Publication date: 1990-01-17

Description

[Brief explanation of drawings]

第１図から第４図は本考案の第１実施例を示し
ており、第１図はシートフレームの部分斜視図、
第２図は第１図の要部斜視図、第３図は第２図
―線断面図、第４図は第３図―線断面図、
第５図から第７図は本考案の第２実施例を示して
おり、第５図はシートフレームの要部斜視図、第
６図は第５図―線断面図、第７図は第６図
―線断面図、第８図から第１０図は従来例を示
しており、第８図はシートフレームの部分斜視図
、第９図は第８図―線断面図、第１０図は第
９図―線断面図である。１０……シートバツクフレーム（シートフレー
ム）、２０，３０……パイプ部材、３３……段付
部、３４……縮径部、２５，３５……切曲げ部、
４５，５５……バーリング部（切曲げ部）。 1 to 4 show a first embodiment of the present invention, and FIG. 1 is a partial perspective view of the seat frame;
Fig. 2 is a perspective view of the main part of Fig. 1, Fig. 3 is a sectional view taken along the line of Fig. 2, Fig. 4 is a sectional view taken along the line of Fig. 3,
5 to 7 show a second embodiment of the present invention, in which FIG. 5 is a perspective view of the main parts of the seat frame, FIG. 6 is a sectional view taken along the line of FIG. 5, and FIG. 8 to 10 show a conventional example, FIG. 8 is a partial perspective view of the seat frame, FIG. 9 is a sectional view along line 8, and FIG. It is a cross-sectional view along the line shown in FIG. 10... Seat back frame (seat frame), 20, 30... Pipe member, 33... Stepped part, 34... Reduced diameter part, 25, 35... Cutting and bending part,
45, 55... Burring part (cutting and bending part).

Claims

[Claims for Utility Model Registration] In a seat having a seat frame in which two pipe members are irremovably connected to each other at a predetermined position, one of the two pipe members is fitted into the other,
Two bent portions are formed on the one side and the other side so as to pierce key points of the overlapping portions and face the center of the pipe axis at right angles to the axial direction of the pipe axis, and to engage with each other, A sheet characterized in that two cut and bent portions serve as retaining portions.