JPH0377748U

JPH0377748U -

Info

Publication number: JPH0377748U
Application number: JP1989139671U
Authority: JP
Priority date: 1989-11-30
Filing date: 1989-11-30
Publication date: 1991-08-06

Description

[Brief explanation of drawings]

第１図は本考案を適用した転換座席の側面図、
第２図は同正面図、第３図は同平面図、第４図は
第一請求項に係る傾倒機構の要部を示す側面図、
第５図は第二請求項に係る傾倒機構の要部を示す
側面図、第６図は第二請求項に係る転換座席にお
けるバツクレストとヘツドレストとの関係及び動
きを示す部分拡大断面図である。符号の説明、１００……転換座席、１０……シ
ート、１１……シートフレーム、１２……バツク
レスト、１３……ヘツドレスト、１４……支持台
、１５……支持軸、２０……第一リンクアーム、
２１……連結部、２２……支持突起、２３……連
結片、３０……第二リンクアーム。 Figure 1 is a side view of a convertible seat to which the present invention is applied;
FIG. 2 is a front view of the same, FIG. 3 is a plan view of the same, and FIG. 4 is a side view showing essential parts of the tilting mechanism according to the first claim.
FIG. 5 is a side view showing essential parts of the tilting mechanism according to the second claim, and FIG. 6 is a partially enlarged sectional view showing the relationship and movement of the backrest and headrest in the convertible seat according to the second claim. Explanation of symbols, 100... Conversion seat, 10... Seat, 11... Seat frame, 12... Backrest, 13... Headrest, 14... Support base, 15... Support shaft, 20... First link arm ,
21... Connecting portion, 22... Support projection, 23... Connecting piece, 30... Second link arm.

Claims

[Claims for Utility Model Registration] 1. A convertible seat in which a backrest is parallel to each other and supported so as to be convertible forward and backward by a pair of first link arms, with respect to the seat frame supporting the seat, Support protrusions are formed at the upper ends of the link arms that project inwardly from their connecting parts, and a support base integrally formed at the lower end of the head rest connected to the upper end of the backrest is formed on the upper end of the backrest. The lower ends of the pair of second link arms parallel to each other are rotatably connected to the support protrusions provided on each of the first link arms, and the lower ends of the pair of second link arms are rotatably connected by a support shaft. A headrest tilting mechanism characterized in that the upper end of the link arm is rotatably connected to a support base of the headrest located on both sides of its support shaft. 2. In a convertible seat in which a backrest is parallel to each other and supported convertible forward and backward by a pair of first link arms with respect to the seat frame that supports the seat, the headrest is connected to the upper end of the backrest in a tiltable manner, and , a connecting piece protruding outward from a connecting part with the backrest is integrally formed on one of the pair of first link arms, and a lower end of one second link arm is rotated around the connecting piece. A tilting mechanism for a headrest, characterized in that the second link arm is movably connected, and the upper end of the second link arm is connected to the headrest side.