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    • 8. 发明授权
    • Glow plug
    • 辉光插头
    • US09429322B2
    • 2016-08-30
    • US13983162
    • 2012-04-12
    • Yuki DoiShunsuke Goto
    • Yuki DoiShunsuke Goto
    • F23Q7/00H01T13/08
    • F23Q7/001H01T13/08
    • A glow plug (1) including a metallic shell (2) having a forward end portion (20) having an outer peripheral surface whose diameter increases toward the rear end side with respect to the axial direction, the forward end portion (20) coming into contact with a seat surface (55) formed on an internal combustion engine (50). The outer peripheral surface of the forward end portion (20) includes a first, second and third contact surfaces (21), (22) and (23), respectively, which differ in imaginary line angle from one another, the imaginary line angle of each contact surface being an angle which is formed, as viewed on a cross section including an axis C1, between two straight imaginary lines connecting inflection points of the contact surface at opposite ends of the contact surface. At least one of the contact surfaces is a curved surface which bulges outward.
    • 一种电热塞(1),包括具有前端部(20)的金属壳(2),所述前端部具有相对于所述轴向朝向后端侧的直径增大的外周面,所述前端部(20)进入 与形成在内燃机(50)上的座面(55)接触。 前端部(20)的外周面分别具有第一,第二和第三接触面(21),(22)和(23),它们的虚拟线角度彼此不同,假想线角度 每个接触表面是在连接接触表面的相对端处的接触表面的拐点之间的两条直线假想线之间形成的角度,在包括轴线C1的横截面上观察。 至少一个接触表面是向外凸出的曲面。
    • 9. 发明申请
    • GLOW PLUG
    • GLOW插头
    • US20130306017A1
    • 2013-11-21
    • US13983162
    • 2012-04-12
    • Yuki DoiShunsuke Goto
    • Yuki DoiShunsuke Goto
    • F23Q7/00
    • F23Q7/001H01T13/08
    • A glow plug (1) including a metallic shell (2) having a forward end portion (20) having an outer peripheral surface whose diameter increases toward the rear end side with respect to the axial direction, the forward end portion (20) coming into contact with a seat surface (55) formed on an internal combustion engine (50). The outer peripheral surface of the forward end portion (20) includes a first, second and third contact surfaces (21), (22) and (23), respectively, which differ in imaginary line angle from one another, the imaginary line angle of each contact surface being an angle which is formed, as viewed on a cross section including an axis C1, between two straight imaginary lines connecting inflection points of the contact surface at opposite ends of the contact surface. At least one of the contact surfaces is a curved surface which bulges outward.
    • 一种电热塞(1),包括具有前端部(20)的金属壳(2),所述前端部具有相对于所述轴向朝向后端侧的直径增大的外周面,所述前端部(20)进入 与形成在内燃机(50)上的座面(55)接触。 前端部(20)的外周面分别具有第一,第二和第三接触面(21),(22)和(23),它们的虚拟线角度彼此不同,假想线角度 每个接触表面是在连接接触表面的相对端处的接触表面的拐点之间的两条直线假想线之间形成的角度,在包括轴线C1的横截面上观察。 至少一个接触表面是向外凸出的曲面。