To provide a mold for a tire that is able to optimize the shape of a ground contact surface and the distribution of ground contact pressure.SOLUTION: A mold comprises a tread forming surface 64 for shaping a tread surface. The tread forming surface 64 includes a projection 74 for forming a circumferential groove and a land surface forming portion 76 for forming a land surface. Among the three land surface forming portions 76 arranged sandwiching the projection 74 in an axial direction, the land surface forming portion 76 located between the two projections 74 is a curved land surface forming portion 76B. The contour of the curved land surface forming portion 76B is shown by one or more arcs. A boundary between a reference side surface 80a of the projection 74 and the curved land surface forming portion 76B is a reference boundary point BBm, and the reference boundary point BBm is located inside the reference forming surface FBL of the tread forming surface 64.SELECTED DRAWING: Figure 4
【課題】接地面形状及び接地圧分布の適正化を図ることが可能なタイヤ用モールドを提供する。【解決手段】モールドは、トレッド面を形づける、トレッド形成面64を備える。トレッド形成面64は、周方向溝を形成する凸条74と、陸面を形成する陸面形成部76とを備える。軸方向において凸条74を挟んで並ぶ、3面の陸面形成部76のうち、2本の凸条74の間に位置する陸面形成部76が湾曲陸面形成部76Bである。湾曲陸面形成部76Bの輪郭が1又は複数の円弧で表される。凸条74の基準側面80aと湾曲陸面形成部76Bとの境界が基準境界点BBmであり、基準境界点BBmがトレッド形成面64の基準形成面FBLよりも内側に位置する。【選択図】図4
TIRE MOLD, TIRE MANUFACTURING METHOD AND TIRE
タイヤ用モールド、タイヤの製造方法及びタイヤ
2022-05-31
Patent
Electronic Resource
Japanese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |