JPS6172252U

JPS6172252U -

Info

Publication number: JPS6172252U
Application number: JP15626384U
Authority: JP
Priority date: 1984-10-16
Filing date: 1984-10-16
Publication date: 1986-05-16

Description

[Brief explanation of drawings]

第１図は本案主枠を用いたシートバツクフレー
ム機構の斜視図、第２図は仝上主枠の要部を示す
拡大縦断正面図、第３図は上記主枠の偏平下端部
の他の実施例を示す縦断正面図、第４図、第５図
は夫々上記偏平中端部の更に他の実施例を示す要
部の拡大斜視図、第６図は夫々上記偏平下端部の
構成を示すもので、第６図Ａは第４図Ｘ−Ｘ線に
沿つた端面図、第６図Ｂは第５図ｙ−ｙ線に沿つ
た端面図である。図中１０は主枠、１１はアツパーパイプ、１２
はロアパイプ、１１ｃ，１１ｄは夫々偏平下端部
を示す。 Fig. 1 is a perspective view of a seatback frame mechanism using the main frame of the present invention, Fig. 2 is an enlarged longitudinal sectional front view showing the main parts of the main frame, and Fig. 3 is another view of the flat lower end of the main frame. 4 and 5 are respectively enlarged perspective views of essential parts showing still other embodiments of the flat middle end portion, and FIG. 6 is a longitudinal sectional front view showing an embodiment, and FIG. 6 is a configuration of the flat bottom end portion. FIG. 6A is an end view taken along line XX in FIG. 4, and FIG. 6B is an end view taken along line y-y in FIG. In the figure, 10 is the main frame, 11 is the upper pipe, 12
indicates a lower pipe, and 11c and 11d indicate flat lower ends, respectively.

Claims

[Claims for Utility Model Registration] (1) A generally inverted U-shaped upper pipe with legs bent downward on both sides, and the lower parts of the legs are made into mutually opposing flat lower ends;
A main frame of a seat back frame mechanism for an automobile, which is inserted between the flat lower end portions and has a lower pipe having both ends welded to the flat lower end portions, respectively, in a substantially square shape. (2) The main frame of a seat back frame mechanism for an automobile according to claim 1, wherein the flat lower end portion is formed by hollow crushing. (3) The main frame of an automobile seat back frame mechanism according to claim 1, wherein the flat lower end portion is completely crushed by inserting an insert pipe into the leg portion of the upper pipe.