To provide a cushion spring which can appropriately improve roll stiffness of a side part of a seat cushion.SOLUTION: A cushion spring 10 comprises: a formed wire 11 which is bridged on a seat cushion frame in a seat front-back direction; and a resin member 12 which is connected with the formed wire 11. The formed wire 11 consists of one wire including a center wire 11A and a side wire 11B which are arrayed in a seat width direction and ends of which are connected to each other extending in the seat front-back direction. The center wire 11A and the side wire 11B respectively include a plurality of crank parts A1, B1 which are alternatively repeatedly bent in one direction of the seat width direction and in the other direction in a crank shape. The resin member 12 includes a deflection restraining part 12A connecting between the plurality of crank parts B1 so as to regulate opening in the seat front-back direction between the crank parts B1 that are formed in the side wire 11B and are consecutively three or more in the front-back direction.SELECTED DRAWING: Figure 5

    【課題】シートクッションのサイド部のロール剛性を適切に高めることが可能なクッションばねを提供すること。【解決手段】クッションばね10は、シートクッションフレームにシート前後方向に架橋されるフォームドワイヤ11と、フォームドワイヤ11に結合される樹脂部材12と、を有する。フォームドワイヤ11は、互いにシート幅方向に並んで各々の一端同士が繋がるようにシート前後方向に延びるセンタワイヤ11Aとサイドワイヤ11Bとを有する1本のワイヤから成る。センタワイヤ11Aとサイドワイヤ11Bとは、それぞれが、シート幅方向の一方と他方とに交互にクランク状に折り返されるように曲がる複数のクランク部A1,B1を有する。樹脂部材12は、サイドワイヤ11Bに形成される前後3つ以上の連続して並ぶクランク部B1の間のシート前後方向の開きを規制するように複数のクランク部B1の間を繋ぐ撓み規制部12Aを有する。【選択図】図5


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    Title :

    CUSHION SPRING


    Additional title:

    クッションばね


    Contributors:

    Publication date :

    2025-01-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / A47C Stühle , CHAIRS



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