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1. 发明授权

US08539921B2 Spark plug 有权
标题翻译：火花塞
公开(公告)号：US08539921B2
公开(公告)日：2013-09-24
申请号：US12921310
申请日：2009-03-17
申请人： Makoto Kuribayashi , Hirokazu Kurono , Toshitaka Honda , Tomoaki Kato
发明人： Makoto Kuribayashi , Hirokazu Kurono , Toshitaka Honda , Tomoaki Kato
IPC分类号： H01T13/20
CPC分类号： H01T13/16 , H01T13/20 , H01T13/38
摘要： An isolation portion (P) of an insulator (10) of a spark plug (100) electrically insulatively isolates a front end portion (22) of a center electrode (20) and a holding portion (56) of a metallic shell (50) from each other and has an intermediate portion (P2) which extends while its outside diameter varies, thereby ensuring an insulation distance between the two portions. The ratio (S/V) of the surface area (S) of the outer surface (14) of the isolation portion (P) to the volume (V) of the isolation portion (P) satisfies the relation 1.26 mm−1≦S/V, whereby the insulation distance between the front end portion (22) and the holding portion (56) is sufficiently ensured while existing dimensional conditions are held unchanged. Through satisfaction of the relation S/V≦1.40 mm−1, an increase in temperature of the center electrode (20) that accompanies an increase in the amount of heat received from a combustion chamber owing to an increase in the surface area (S) of the outer surface (14) is restrained, thereby maintaining a required heat value.
摘要翻译：火花塞（100）的绝缘体（10）的隔离部分（P）电绝缘地隔离中心电极（20）的前端部分（22）和金属壳体（50）的保持部分（56）并且具有在其外径变化的同时延伸的中间部分（P2），从而确保两部分之间的绝缘距离。隔离部分（P）的外表面（14）与隔离部分（P）的体积（V）的表面积（S）的比（S / V）满足关系1.26mm-1 @ S / V，从而充分确保前端部分（22）和保持部分（56）之间的绝缘距离，同时保持原有的尺寸条件不变。通过满足S / V @ 1.40mm-1的关系，由于表面积（S）的增加伴随着从燃烧室接收的热量增加的中心电极（20）的温度升高，的外表面（14）被抑制，从而保持所需的热值。

2. 发明申请

US20110000453A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20110000453A1
公开(公告)日：2011-01-06
申请号：US12921310
申请日：2009-03-17
申请人： Makoto Kuribayashi , Hirokazu Kurono , Toshitaka Honda , Tomoaki Kato
发明人： Makoto Kuribayashi , Hirokazu Kurono , Toshitaka Honda , Tomoaki Kato
IPC分类号： H01T13/08
CPC分类号： H01T13/16 , H01T13/20 , H01T13/38
摘要： An isolation portion (P) of an insulator (10) of a spark plug (100) electrically insulatively isolates a front end portion (22) of a center electrode (20) and a holding portion (56) of a metallic shell (50) from each other and has an intermediate portion (P2) which extends while its outside diameter varies, thereby ensuring an insulation distance between the two portions. The ratio (S/V) of the surface area (S) of the outer surface (14) of the isolation portion (P) to the volume (V) of the isolation portion (P) satisfies the relation 1.26 mm−1≦S/V, whereby the insulation distance between the front end portion (22) and the holding portion (56) is sufficiently ensured while existing dimensional conditions are held unchanged. Through satisfaction of the relation S/V≦1.40 mm−1, an increase in temperature of the center electrode (20) that accompanies an increase in the amount of heat received from a combustion chamber owing to an increase in the surface area (S) of the outer surface (14) is restrained, thereby maintaining a required heat value.
摘要翻译：火花塞（100）的绝缘体（10）的隔离部分（P）电绝缘地隔离中心电极（20）的前端部分（22）和金属壳体（50）的保持部分（56）并且具有在其外径变化的同时延伸的中间部分（P2），从而确保两部分之间的绝缘距离。隔离部分（P）的外表面（14）的表面积（S）与隔离部分（P）的体积（V）的比（S / V）满足关系1.26mm-1＆nlE; S / V，从而充分确保前端部分（22）和保持部分（56）之间的绝缘距离，同时保持原有的尺寸条件不变。通过满足S / V＆nlE; 1.40mm-1的关系，伴随着由于表面积（S）的增加而从燃烧室接收的热量的增加，中心电极（20）的温度升高的外表面（14）被抑制，从而保持所需的热值。

3. 发明申请

US20080315895A1 TEST METHOD AND APPARATUS FOR SPARK PLUG INSULATOR 有权
标题翻译：火花塞绝缘子的测试方法和设备
公开(公告)号：US20080315895A1
公开(公告)日：2008-12-25
申请号：US12130120
申请日：2008-05-30
申请人： Toshitaka HONDA , Hirokazu Kurono , Tomoaki Kato
发明人： Toshitaka HONDA , Hirokazu Kurono , Tomoaki Kato
IPC分类号： G01N27/92
CPC分类号： H01T13/60
摘要： There is provided a test method for detecting the presence or absence of a defect in a spark plug insulator, including a reference voltage determination process, a test area determination process, a test voltage determination process and a current detection process. In the reference voltage determination process, a reference voltage VF is determined. In the test area and voltage determined processes, test area and voltage are determined so as not to incur a flashover on the basis of a reference insulator of the same material, shape and size as the spark plug insulator when the reference insulator is placed in position between first and second test electrodes. In the current detection step, the test voltage is applied between the first and second test electrodes to detect an electric current between the first and second test electrodes.
摘要翻译：提供了一种用于检测火花塞绝缘子中缺陷的存在或不存在的测试方法，包括参考电压确定过程，测试区域确定过程，测试电压确定过程和电流检测过程。在参考电压确定过程中，确定参考电压VF。在测试区域和电压确定过程中，确定测试区域和电压，以便在参考绝缘子放置就位时，基于与火花塞绝缘体相同的材料，形状和尺寸的参考绝缘体不引起闪络在第一和第二测试电极之间。在电流检测步骤中，在第一和第二测试电极之间施加测试电压，以检测第一和第二测试电极之间的电流。

4. 发明授权

US07808250B2 Test method and apparatus for spark plug insulator 有权
标题翻译：火花塞绝缘子的测试方法和装置
公开(公告)号：US07808250B2
公开(公告)日：2010-10-05
申请号：US12130120
申请日：2008-05-30
申请人： Toshitaka Honda , Hirokazu Kurono , Tomoaki Kato
发明人： Toshitaka Honda , Hirokazu Kurono , Tomoaki Kato
IPC分类号： G01N27/00
CPC分类号： H01T13/60
摘要： There is provided a test method for detecting the presence or absence of a defect in a spark plug insulator, including a reference voltage determination process, a test area determination process, a test voltage determination process and a current detection process. In the reference voltage determination process, a reference voltage VF is determined. In the test area and voltage determined processes, test area and voltage are determined so as not to incur a flashover on the basis of a reference insulator of the same material, shape and size as the spark plug insulator when the reference insulator is placed in position between first and second test electrodes. In the current detection step, the test voltage is applied between the first and second test electrodes to detect an electric current between the first and second test electrodes.
摘要翻译：提供了一种用于检测火花塞绝缘子中缺陷的存在或不存在的测试方法，包括参考电压确定过程，测试区域确定过程，测试电压确定过程和电流检测过程。在参考电压确定过程中，确定参考电压VF。在测试区域和电压确定过程中，确定测试区域和电压，以便在参考绝缘子放置就位时，基于与火花塞绝缘体相同的材料，形状和尺寸的参考绝缘体不引起闪络在第一和第二测试电极之间。在电流检测步骤中，在第一和第二测试电极之间施加测试电压，以检测第一和第二测试电极之间的电流。

5. 发明授权

US09077157B2 Ignition plug having a rear trunk portion that provides sufficient strength 有权
标题翻译：点火塞具有提供足够强度的后躯干部分
公开(公告)号：US09077157B2
公开(公告)日：2015-07-07
申请号：US14232101
申请日：2012-07-05
申请人： Hirokazu Kurono , Toshitaka Honda
发明人： Hirokazu Kurono , Toshitaka Honda
IPC分类号： H01T13/20 , H01T13/34
CPC分类号： H01T13/20 , H01T13/34
摘要： An ignition plug includes a ceramic insulator having an axial bore, a metallic shell, and a terminal electrode. The terminal electrode has a leg portion inserted into a rear side of the axial bore, and a head portion formed on a rear side of the leg portion and having an outside diameter greater than that of the leg portion. The insulator includes a rear trunk portion exposed from the rear end of the metallic shell, which has a maximum outside diameter of 9.5 mm or less. The insulator has an end-surface seat portion located forward of its rear end and being in contact with the forward end surface of the head portion, and an outer circumferential portion into which at least a forward end portion of the head portion is inserted and which is located externally of the outer circumference of the head portion.
摘要翻译：火花塞包括具有轴向孔，金属壳和端子电极的陶瓷绝缘体。端子电极具有插入轴向孔的后侧的脚部和形成在腿部的后侧上并且具有大于腿部的外径的头部的头部。绝缘体包括从金属壳的后端露出的后躯干部分，其具有最大外径9.5mm或更小。绝缘体具有位于其后端的前端并与头部的前端面接触的端面座部，以及插入头部的至少前端部的外周部，位于头部的外周的外侧。

6. 发明授权

US08469758B2 Insulator for spark plug, and method for manufacturing spark plug 有权
标题翻译：火花塞绝缘子及火花塞的制造方法
公开(公告)号：US08469758B2
公开(公告)日：2013-06-25
申请号：US13280428
申请日：2011-10-25
申请人： Toshitaka Honda , Hirokazu Kurono
发明人： Toshitaka Honda , Hirokazu Kurono
IPC分类号： H01T21/00 , H01T21/02
CPC分类号： H01T13/38 , B28B1/30 , B28B1/44 , B28B3/003 , H01T21/02 , Y10T29/49227
摘要： A method for manufacturing an insulator includes: preparing a press pin and a forming die having a cavity, the press pin including a pin-side spiral portion formed on a first position; filling a raw powder into the cavity; arranging the press pin within the cavity; pressing the raw powder within the cavity along with the press pin, and obtaining a green body formed with a green body-side spiral portion; releasing the green body along with the press pin from the cavity; retreating the press pin with respect to the green body while rotating the press pin relative to the green body around an axis, and extracting the press pin from the green body; and removing an unnecessary portion from the green body. The first position is positioned such that the green body-side spiral portion is located in the unnecessary portion of the green body.
摘要翻译：制造绝缘体的方法包括：制备压针和具有空腔的成形模，所述压销包括形成在第一位置的销侧螺旋部; 将原料粉末填充到空腔中; 将压脚布置在腔内; 与压销一起挤压空腔内的原料粉末，得到形成有生坯侧螺旋部分的生坯; 释放生坯与压针一起从腔体释放出来; 相对于生坯在相对于生坯体旋转压销的同时相对于生坯体退回压头，并从生坯体提取压销; 并从生坯中去除不需要的部分。第一位置被定位成使得生坯体侧螺旋部分位于生坯体的不必要部分中。

7. 发明授权

US08390183B2 Spark plug and method for manufacturing spark plug 有权
标题翻译：火花塞和火花塞的制造方法
公开(公告)号：US08390183B2
公开(公告)日：2013-03-05
申请号：US12598482
申请日：2009-03-26
申请人： Hirokazu Kurono , Toshitaka Honda , Hiroki Takeuchi , Takeshi Mitsuoka , Kuniharu Tanaka , Kazunari Miyata , Katsuya Takaoka
发明人： Hirokazu Kurono , Toshitaka Honda , Hiroki Takeuchi , Takeshi Mitsuoka , Kuniharu Tanaka , Kazunari Miyata , Katsuya Takaoka
IPC分类号： H01T21/02
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.
摘要翻译：本发明的目的是提供一种具有高耐压特性和高温强度的火花塞，由具有优异的加工性和高生产率制备的氧化铝基烧结体形成，以及一种用于制造火花塞的方法。本发明涉及一种包括绝缘体3的火花塞1，其中绝缘体3包括平均结晶粒径为1.50μm以上的致密的氧化铝基烧结体，氧化铝基烧结体包含Si，第2组含有Ba的元素成分和除此以外的第2族元素的元素成分和稀土元素成分，使得Si成分的含量S与含量S的总含量的比率和第2族元素成分的含量A 为0.60以上，以及通过研磨成形工序制造火花塞1的方法，其中绝缘体3在燃烧之前被磨削成形。

8. 发明申请

US20100136867A1 SPARK PLUG AND METHOD FOR MANUFACTURING SPARK PLUG 有权
标题翻译：火花插头和制造火花插头的方法
公开(公告)号：US20100136867A1
公开(公告)日：2010-06-03
申请号：US12598482
申请日：2009-03-26
申请人： Hirokazu Kurono , Toshitaka Honda , Hiroki Takeuchi , Takeshi Mitsuoka , Kuniharu Tanaka , Kazunari Miyata , Katsuya Takaoka
发明人： Hirokazu Kurono , Toshitaka Honda , Hiroki Takeuchi , Takeshi Mitsuoka , Kuniharu Tanaka , Kazunari Miyata , Katsuya Takaoka
IPC分类号： H01T21/02 , H01T13/38
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.
摘要翻译：本发明的目的是提供一种具有高耐压特性和高温强度的火花塞，由具有优异的加工性和高生产率制备的氧化铝基烧结体形成，以及一种用于制造火花塞的方法。本发明涉及一种包括绝缘体3的火花塞1，其中绝缘体3包括平均结晶粒径为1.50μm以上的致密的氧化铝基烧结体，氧化铝基烧结体包含Si，第2组含有Ba的元素成分和除此以外的第2族元素的元素成分和稀土元素成分，使得Si成分的含量S与含量S的总含量的比率和第2族元素成分的含量A 为0.60以上，以及通过研磨成形工序制造火花塞1的方法，其中绝缘体3在燃烧之前被磨削成形。

9. 发明授权

US09054501B2 Spark plug 有权
标题翻译：火花塞
公开(公告)号：US09054501B2
公开(公告)日：2015-06-09
申请号：US14238559
申请日：2012-08-31
申请人： Kengo Fujimura , Hirokazu Kurono , Toshitaka Honda
发明人： Kengo Fujimura , Hirokazu Kurono , Toshitaka Honda
IPC分类号： H01T13/20 , H01T13/34
CPC分类号： H01T13/20 , H01T13/34
摘要： A spark plug includes: a center electrode including a rod portion and a head portion and having a diameter larger than the diameter of the rod portion; an insulator having an axial bore, the center electrode being disposed in the axial bore at its front end; and a seal portion for fixing the center electrode in the axial bore. The insulator comprises: a leg portion inner circumferential surface; a cylindrical trunk portion inner circumferential surface which surrounds the head portion; and a support surface which supports the head portion. The seal portion has: a seal portion outer circumferential surface; a seal portion abutment surface; and a connecting surface. In a cross section of the seal portion, a curve, which is part of the contour of the seal portion and is included in the connecting surface, has a radius of curvature R of 0.1 mm or more.
摘要翻译：火花塞包括：中心电极，包括杆部分和头部部分，其直径大于杆部分的直径; 具有轴向孔的绝缘体，所述中心电极在其前端设置在所述轴向孔中; 以及用于将中心电极固定在轴向孔中的密封部分。绝缘体包括：腿部内周面; 围绕头部的圆筒状的主干部内周面; 以及支撑头部的支撑面。密封部具有：密封部外周面; 密封部分邻接表面; 和连接面。在密封部分的横截面中，作为密封部分的轮廓的一部分并且包括在连接表面中的曲线具有0.1mm或更大的曲率半径R.

10. 发明申请

US20140210335A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20140210335A1
公开(公告)日：2014-07-31
申请号：US14238559
申请日：2012-08-31
申请人： Kengo Fujimura , Hirokazu Kurono , Toshitaka Honda
发明人： Kengo Fujimura , Hirokazu Kurono , Toshitaka Honda
IPC分类号： H01T13/20
CPC分类号： H01T13/20 , H01T13/34
摘要： A spark plug includes: a center electrode including a rod portion and a head portion and having a diameter larger than the diameter of the rod portion; an insulator having an axial bore, the center electrode being disposed in the axial bore at its front end; and a seal portion for fixing the center electrode in the axial bore. The insulator comprises: a leg portion inner circumferential surface; a cylindrical trunk portion inner circumferential surface which surrounds the head portion; and a support surface which supports the head portion. The seal portion has: a seal portion outer circumferential surface; a seal portion abutment surface; and a connecting surface. In a cross section of the seal portion, a curve, which is part of the contour of the seal portion and is included in the connecting surface, has a radius of curvature R of 0.1 mm or more.
摘要翻译：火花塞包括：中心电极，包括杆部分和头部部分，其直径大于杆部分的直径; 具有轴向孔的绝缘体，所述中心电极在其前端设置在所述轴向孔中; 以及用于将中心电极固定在轴向孔中的密封部分。绝缘体包括：腿部内周面; 围绕头部的圆筒状的主干部内周面; 以及支撑头部的支撑面。密封部具有：密封部外周面; 密封部分邻接表面; 和连接面。在密封部分的横截面中，作为密封部分的轮廓的一部分并且包括在连接表面中的曲线具有0.1mm或更大的曲率半径R.

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