JPH0248441U

JPH0248441U -

Info

Publication number: JPH0248441U
Application number: JP12700988U
Authority: JP
Priority date: 1988-09-28
Filing date: 1988-09-28
Publication date: 1990-04-04

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図〜第４図は本考案の第１実施例を示して
おり、第１図は背凭れを起立したときの前倒し機
構の正面図、第２図は同じく前倒すべく背凭れを
上限位置に引き上げたときの正面図、第３図は同
じく前倒時の正面図、第４図は案内ボルトの斜視
図、第５図および第６図は第２実施例を示してお
り、第５図は前倒すべく背凭れを上限位置に引き
上げたときの前倒し機構の正面図、第６図は案内
ボルトの斜視図、第７図〜第９図は従来の背凭れ
の前倒し機構を示しており、第７図は要部の分解
斜視図、第８図は背凭れ起立状態の前倒し機構の
正面図、第９図は同じく前倒状態の側面図である
。Ｂ…背凭れ、Ｓ…シート、１０…背凭れの前倒
し機構、１１…支持金具、１２…長穴、１３…係
止爪、１９…起立保持ピン（起立姿勢保持手段）
、２０…係止手段、２１…背凭側部材、２２…起
立保持穴（起立姿勢保持手段）、２５…案内ボル
ト（案内部材）、２６…係止突起、３０…支持金
具、３１…長穴、３１ａ…長穴の前部縁、３２…
係止爪、４０…係止手段、４５…案内ボルト（案
内部材）、４６…切欠部、４６ａ…平坦面。 Figures 1 to 4 show the first embodiment of the present invention. Figure 1 is a front view of the forward folding mechanism when the backrest is erected, and Figure 2 is a front view of the forward folding mechanism when the backrest is tilted forward. 3 is a front view when it is folded forward, FIG. 4 is a perspective view of the guide bolt, FIGS. 5 and 6 show the second embodiment, and FIG. is a front view of the forward-folding mechanism when the backrest is pulled up to the upper limit position for folding forward, FIG. 6 is a perspective view of the guide bolt, and FIGS. 7 to 9 show the conventional forward-folding mechanism of the backrest. FIG. 7 is an exploded perspective view of the main parts, FIG. 8 is a front view of the forward folding mechanism with the backrest upright, and FIG. 9 is a side view of the forward folding mechanism. B...backrest, S...seat, 10...backrest forward folding mechanism, 11...support metal fittings, 12...elongated hole, 13...locking claw, 19...erecting holding pin (erecting posture holding means)
, 20...locking means, 21...backrest side member, 22...erecting holding hole (standing posture holding means), 25...guide bolt (guiding member), 26...locking protrusion, 30...supporting metal fitting, 31...elongated hole , 31a... front edge of the elongated hole, 32...
Locking claw, 40...Locking means, 45...Guide bolt (guide member), 46...Notch, 46a...Flat surface.

Claims

【実用新案登録請求の範囲】背凭れを、起立して保持する一方において、前
倒可能に支持する背凭れの前倒し機構において、下方向の長穴を穿設してシート側部に固設され
た支持金具と、背凭れの下部両側に、前記長穴に
摺動可能に嵌合し、少なくとも長穴の上端におい
て背凭れの前倒し可能な案内部材を設けるととも
に、起倒状態で背凭れを最下位置に下げたとき、
背凭れの起立姿勢保持手段を有し前倒ししたとき、背凭れを所定角度に保持する
ために、前記案内部材と、前記長穴の上端部とに
互いに係止する係止手段を設けたことを特徴とす
る背凭れの前倒し機構。[Scope of Claim for Utility Model Registration] In a forward-folding mechanism for a backrest that supports the backrest so that it can be folded forward while being held upright, a long hole is drilled downward and is fixed to the side of the seat. A supporting metal fitting is provided on both sides of the lower part of the backrest, and a guide member is provided that is slidably fitted into the elongated hole and that allows the backrest to be tilted forward at least at the upper end of the elongated hole. When lowered to the lower position,
The device has means for holding the backrest in an upright position, and a locking means is provided on the guide member and the upper end of the elongated hole to lock each other in order to hold the backrest at a predetermined angle when the backrest is tilted forward. Features a forward-folding mechanism for the backrest.