VEHICULAR SEAT

• Main Author: NOSAKA TAKAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 09.07.2020
• Subjects: BEDS; CHAIRS; COFFEE MILLS; DOMESTIC ARTICLES OR APPLIANCES; FURNITURE; HUMAN NECESSITIES; PERFORMING OPERATIONS; SEATS SPECIALLY ADAPTED FOR VEHICLES; SOFAS; SPICE MILLS; SUCTION CLEANERS IN GENERAL; TRANSPORTING; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDEDFOR; VEHICLES IN GENERAL

To provide a vehicular seat capable of effectively supporting lumbar vertebra of a seating person.SOLUTION: A vehicular seat includes a lumber support plate 12, a pair of links 20A, 20B which connect the lumber support plate 12 to a seat back frame and a driving part 30 which drives the pair of links 20A, 20B. Therein, the pair of links 20A, 20B are arranged to cross to each other and respectively have first rod 21 and second rod 22 rotatably connected on a crossing portion 23, a first end part of the first rod 21 is rotatably fixed to a bracket 24, a second end part is movably engaged with a lumber support plate 12, a first end part of a second rod 22 is movably engaged with a bracket 24 along a guide slit 25, the second end part of the second rod 22 is rotatably fixed to the lumber support plate 12 and the guide slit 25 which guides the first end part of the second rod 22 has a straight line portion and a curved line extended from an end part of the straight line portion.SELECTED DRAWING: Figure 2 【課題】着座者の腰椎を効果的に支持可能な乗物用シートを提供する。【解決手段】ランバーサポートプレート１２と、ランバーサポートプレート１２をシートバックフレームに連結する一対のリンク２０Ａ，２０Ｂと、一対のリンク２０Ａ，２０Ｂを駆動する駆動部３０とを備え、一対のリンク２０Ａ，２０Ｂは互いに交差して配置され且つ交差部分２３において回動可能に結合された第１ロッド２１及び第２ロッド２２をそれぞれ有し、第１ロッド２１の第１端部はブラケット２４に回転可能に固定され、第２端部は移動可能にランバーサポートプレート１２と係合し、第２ロッド２２の第１端部はガイドスリット２５に沿って移動可能にブラケット２４と係合し、第２ロッド２２の第２端部はランバーサポートプレート１２に回転可能に固定され、第２ロッド２２の第１端部をガイドするガイドスリット２５は直線部分と直線部分の端部から延びる曲線部分と、を有する。【選択図】図２