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1. 发明公开

EP3232520A1 SPARK PLUG INSULATOR PRODUCTION METHOD, INSULATOR, MOLDING DIE 有权
标题翻译： SPARK插头绝缘子生产方法，绝缘体，模具
公开(公告)号：EP3232520A1
公开(公告)日：2017-10-18
申请号：EP15867522.3
申请日：2015-09-23
申请人： NGK Spark Plug Co., Ltd.
发明人： KURONO, Hirokazu , UEGAKI, Hironori , HONDA, Toshitaka , HAZAMA, Hiroyuki , TANAKA, Kuniharu , KAWAJI, Hiroyuki
IPC分类号： H01T13/20 , H01T21/02
CPC分类号： B29C45/14655 , B28B1/24 , B28B7/0038 , B28B7/18 , B28B7/346 , B28B13/06 , H01T13/20 , H01T13/34 , H01T13/39 , H01T21/02
摘要： The present invention provides a technique for restraining deformation of a molded body in releasing the molded body from a mold. An employed rear mold is composed of a plurality of mold pieces. The plurality of mold pieces include a first mold piece which forms a first partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface, and a second mold piece which is located axially forward of the first mold piece and forms a second partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface. Releasing the molded body includes starting to move the first mold piece rearward in relation to a rear molded portion, and, subsequently to starting to move the first mold piece, starting to move the second mold piece rearward in relation to the rear molded portion, thereby disassembling the rear mold into the plurality of mold pieces. The rear mold may be composed of a plurality of mold pieces which form different portions of the internal surface of the rear mold.
摘要翻译：本发明提供了一种用于抑制成型体从模具中脱模的变形的技术。采用的后部模具由多个模具部件组成。多个模具件包括：第一模具件，其沿着内表面的整个圆周形成后模具的内表面的第一局部内表面;以及第二模件，其位于第一模件的轴向前方以及沿着内表面的整个圆周形成后模内表面的第二局部内表面。释放模制体包括开始相对于后模制部分向后移动第一模制件，并且随后开始移动第一模制件，开始使第二模制件相对于后模制部分向后移动，由此将后模拆卸成多个模件。后模可以由形成后模内表面的不同部分的多个模件组成。

2. 发明授权

EP3148020B1 SPARK PLUG 有权转让
公开(公告)号：EP3148020B1
公开(公告)日：2020-03-18
申请号：EP16189735.0
申请日：2016-09-20
申请人： NGK Spark Plug Co., Ltd.
发明人： ISASA, Jumpei , YOSHIDA, Haruki , YOKOYAMA, Yutaka , TANAKA, Kuniharu , ARAKI, Nobuyoshi , KON, Toshiki
IPC分类号： H01T13/38

3. 发明公开

EP3148022A1 SPARK PLUG 有权转让
标题翻译：火花塞
公开(公告)号：EP3148022A1
公开(公告)日：2017-03-29
申请号：EP16190408.1
申请日：2016-09-23
申请人： NGK Spark Plug Co., Ltd.
发明人： YOKOYAMA, Yutaka , TANAKA, Kuniharu , TAKAOKA, Katsuya , KONDO, Shun , ARAKI, Nobuyoshi , KON, Toshiki , YOSHIDA, Haruki , ISASA, Jumpei , KURONO, Hirokazu , UEGAKI, Hironori , SAJI, Toshimasa , NOMURA, Yusuke
IPC分类号： H01T13/38 , H01T13/60
CPC分类号： H01T13/38 , H01T13/60
摘要： A spark plug 1 including an insulator 3 containing not less than 92 mass % and not greater than 96 mass % of Al component in terms of oxide, wherein the insulator is formed from an alumina sintered body comprising alumina crystal and a grain boundary phase present between crystal grains of the alumina crystal. Assuming that mass contents of an Si component, an Mg component, a Ba component, and a Ca component in terms of oxide are represented by M SiO2 , M MgO , M BaO , and M CaO , respectively, and a sum of M SiO2 , M MgO , M BaO , and M CaO is represented by Mt, the grain boundary phase contains these components so as to satisfy conditions (1) to (4) as follows: (1) 0.17 ≤ M SiO2 /Mt ≤ 0.47; (2) 0.005 ≤ M MgO /Mt ≤ 0.07; (3) 0.29 ≤ M BaO /Mt ≤ 0.77; (4) 0.03 ≤ M CaO /Mt ≤ 0.19.
摘要翻译： 1。一种火花塞1，其特征在于，以氧化物换算计含有92质量％以上且96质量％以下的Al成分的绝缘体3，所述绝缘体由氧化铝结晶的氧化铝烧结体和存在于氧化铝晶体的晶粒。假定以氧化物换算，Si成分，Mg成分，Ba成分和Ca成分的质量含量分别由MSiO 2，MMgO，MBaO和MCaO表示，MSiO 2，MMgO，MBaO和 MCaO由Mt表示，晶界相包含这些组分以满足条件（1）至（4）如下：（1）0.17≤MoSiO2/Mt≤0.47; （2）0.005≤MMgO/Mt≤0.07; （3）0.29≤MBaO/Mt≤0.77; （4）0.03≤MCaO /Mt≤0.19。

4. 发明公开

EP3148020A1 SPARK PLUG 有权转让
标题翻译：火花塞
公开(公告)号：EP3148020A1
公开(公告)日：2017-03-29
申请号：EP16189735.0
申请日：2016-09-20
申请人： NGK Spark Plug Co., Ltd.
发明人： ISASA, Jumpei , YOSHIDA, Haruki , YOKOYAMA, Yutaka , TANAKA, Kuniharu , ARAKI, Nobuyoshi , KON, Toshiki
IPC分类号： H01T13/38
摘要： A spark plug includes an insulator made of an alumina sintered body containing Al 2 O 3 as a principal component and additional components including; an Si component, a Ba component, an Mg component, a Ca component, an Sr component, and a rare earth element component. When the additional components are expressed as oxides including R SiO2 , R BaO , R MgO , R CaO , R SrO , and R RE2O3 , contents (mass %) of the sub-component satisfy expressions (1) to (6) as follows: (1) 1.0 ≤ R SiO2 ≤ 5.0; (2) 0.5 ≤ R BaO ≤ 5.0; (3) 0 ≤ R MgO ≤ 0.18; (4) 0 ≤ R MgO /R BaO ≤ 0.36; (5) 0.3 ≤ (R MgO +R CaO +R SrO ) ≤ 1.8; and (6) 0 ≤ R RE2O3 ≤ 0.1.
摘要翻译：火花塞包括由含有Al 2 O 3作为主要组分的氧化铝烧结体制成的绝缘体和附加组分， Si成分，Ba成分，Mg成分，Ca成分，Sr成分和稀土类成分。（1）〜（6）满足式（1）：1.0≤RSiO2（1）1.0≤RSiO2（1）1.0≤RSiO2 ≤5.0; （2）0.5≤RBaO≤5.0; （3）0≤RggO≤0.18; （4）0≤RggO/RBaO≤0.36; （5）0.3≤（RMgO + RCaO + RSrO）≤1.8; 和（6）0≤RRE2 O 3≤0.1。

5. 发明公开

EP3089290A1 SPARK PLUG 审中-公开
标题翻译：火花塞
公开(公告)号：EP3089290A1
公开(公告)日：2016-11-02
申请号：EP14874467.5
申请日：2014-12-25
申请人： NGK Spark Plug Co., Ltd.
发明人： KASASHIMA, Takashi , TAKAOKA, Katsuya , KUROSAWA, Kazuhiro , TANAKA, Kuniharu , HONDA, Toshitaka , KURONO, Hirokazu , YOSHIDA, Haruki , UEGAKI, Hironori
IPC分类号： H01T13/20
CPC分类号： H01T13/05 , F02P11/00 , H01T13/41
摘要： A connection portion connecting a center electrode and a terminal metal fixture together in a through hole of the insulator includes a resistor and a magnetic substance structure including a magnetic substance and a conductor and being disposed on a leading end side or a rear end side of the resistor while being positioned away from the resistor. Among the resistor and the magnetic substance structure, a member disposed on a leading end side is defined as a first member and a member disposed on a rear end side is defined as a second member. The connection portion further includes a first conductive sealing portion, a second conductive sealing portion and a third conductive sealing portion. The first conductive sealing portion is disposed on a leading end side of the first member and is in contact with the first member. The second conductive sealing portion is disposed between the first member and the second member and is in contact with the first member and the second member. The third conductive sealing portion is disposed on a rear end side of the second member and is in contact with the second member. The magnetic substance structure contains a conductive substance as the conductor, an iron-containing oxide as the magnetic substance, and a ceramic containing at least one of silicon, boron, and phosphorous.
摘要翻译：在绝缘体的通孔中，将中心电极和端子金属固定件连接在一起的连接部分包括电阻器和磁性物质结构，该磁性物质结构包括磁性物质和导体，并且被布置在第一电极和第二电极的前端侧或后端侧电阻器的位置远离电阻器。在电阻器和磁性体结构中，布置在前端侧的构件被定义为第一构件，布置在后端侧的构件被定义为第二构件。连接部分还包括第一导电密封部分，第二导电密封部分和第三导电密封部分。第一导电密封部分设置在第一部件的前端侧并与第一部件接触。第二导电密封部分设置在第一部件和第二部件之间并且与第一部件和第二部件接触。第三导电密封部分设置在第二部件的后端侧上并且与第二部件接触。磁性物质结构体含有作为导体的导电性物质，作为磁性体的含铁氧化物，含有硅，硼和磷中的至少一种的陶瓷。

6. 发明授权

EP3232520B1 SPARK PLUG INSULATOR PRODUCTION METHOD, INSULATOR, MOLDING DIE 有权
公开(公告)号：EP3232520B1
公开(公告)日：2020-09-09
申请号：EP15867522.3
申请日：2015-09-23
申请人： NGK Spark Plug Co., Ltd.
发明人： KURONO, Hirokazu , UEGAKI, Hironori , HONDA, Toshitaka , HAZAMA, Hiroyuki , TANAKA, Kuniharu , KAWAJI, Hiroyuki
IPC分类号： H01T13/20 , H01T21/02 , B28B21/82 , B29C45/14 , B28B1/24

7. 发明授权

EP2259395B1 SPARK PLUG 有权转让
公开(公告)号：EP2259395B1
公开(公告)日：2020-04-08
申请号：EP09725375.1
申请日：2009-03-26
申请人： NGK Spark Plug Co., Ltd.
发明人： KURONO, Hirokazu , HONDA, Toshitaka , TAKEUCHI, Hiroki , MITSUOKA, Takeshi , TANAKA, Kuniharu , TAKAOKA, Katsuya
IPC分类号： H01T13/38 , C04B35/111 , H01B1/12

8. 发明授权

EP2735556B1 SINTERED COMPACT AND CUTTING TOOL 有权转让
公开(公告)号：EP2735556B1
公开(公告)日：2019-09-04
申请号：EP12815313.7
申请日：2012-07-06
申请人： NGK Spark Plug Co., Ltd.
发明人： MOTEKI, Jun , KATSU, Yusuke , TANAKA, Kuniharu , MITSUOKA, Takeshi , KUROKI, Yoshihiro , KUSANAGI, Hironobu
IPC分类号： C04B35/10 , B23B27/14 , B23C5/16 , C04B35/622

9. 发明授权

EP3148022B1 SPARK PLUG 有权转让
公开(公告)号：EP3148022B1
公开(公告)日：2018-09-19
申请号：EP16190408.1
申请日：2016-09-23
申请人： NGK Spark Plug Co., Ltd.
发明人： YOKOYAMA, Yutaka , TANAKA, Kuniharu , TAKAOKA, Katsuya , KONDO, Shun , ARAKI, Nobuyoshi , KON, Toshiki , YOSHIDA, Haruki , ISASA, Jumpei , KURONO, Hirokazu , UEGAKI, Hironori , SAJI, Toshimasa , NOMURA, Yusuke
IPC分类号： H01T13/38 , H01T13/60
CPC分类号： H01T13/38 , H01T13/60
摘要： A spark plug 1 including an insulator 3 containing not less than 92 mass % and not greater than 96 mass % of Al component in terms of oxide, wherein the insulator is formed from an alumina sintered body comprising alumina crystal and a grain boundary phase present between crystal grains of the alumina crystal. Assuming that mass contents of an Si component, an Mg component, a Ba component, and a Ca component in terms of oxide are represented by M SiO2 , M MgO , M BaO , and M CaO , respectively, and a sum of M SiO2 , M MgO , M BaO , and M CaO is represented by Mt, the grain boundary phase contains these components so as to satisfy conditions (1) to (4) as follows: (1) 0.17 ‰¤ M SiO2 /Mt ‰¤ 0.47; (2) 0.005 ‰¤ M MgO /Mt ‰¤ 0.07; (3) 0.29 ‰¤ M BaO /Mt ‰¤ 0.77; (4) 0.03 ‰¤ M CaO /Mt ‰¤ 0.19.

10. 发明授权

EP2259394B1 SPARK PLUG AND PROCESS FOR PRODUCING THE SPARK PLUG 有权转让
公开(公告)号：EP2259394B1
公开(公告)日：2018-09-05
申请号：EP09723991.7
申请日：2009-03-26
申请人： NGK Spark Plug Co., Ltd.
发明人： KURONO, Hirokazu , HONDA, Toshitaka , TAKEUCHI, Hiroki , MITSUOKA, Takeshi , TANAKA, Kuniharu , MIYATA, Kazunari , TAKAOKA, Katsuya
IPC分类号： H01T13/38 , C04B35/111 , H01T13/20 , H01T13/36
CPC分类号： H01T13/38 , C04B35/111 , C04B35/6261 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3222 , C04B2235/3224 , C04B2235/3227 , C04B2235/3229 , C04B2235/3418 , C04B2235/5436 , C04B2235/656 , C04B2235/6567 , C04B2235/77 , C04B2235/786 , C04B2235/80 , C04B2235/96 , H01T21/02
摘要： This invention has an object to provide a spark plug exhibiting high withstand voltage characteristics and high strength at high temperature, formed by an alumina-based sintered body prepared with excellent processability and high productivity, and a method for manufacturing the spark plug. This invention relates to a spark plug 1 including an insulator 3, wherein the insulator 3 includes a dense alumina-based sintered body having an average crystal particle diameter of 1.50 µm or more, and the alumina-based sintered body contains Si, a Group 2 element component containing Ba and a Group 2 element other than those, and a rare earth element component, such that a ratio of a content S of the Si component to a total content of the content S and a content A of the Group 2 element component is 0.60 or more, and a method for manufacturing the spark plug 1 prepared through a grinding-shaping process in which the insulator 3 is ground before burning to shape the same.

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