公开(公告)号：US11768169B2

公开(公告)日：2023-09-26

申请号：US16686812

申请日：2019-11-18

申请人： NGK INSULATORS, LTD.

发明人： Yusuke Watanabe ,  Takao Murase ,  Masashi Yasui

IPC分类号： H05B3/02 ,  G01N27/406 ,  G01N27/409 ,  G01N27/416 ,  H05B3/14 ,  H05B1/02 ,  H05B3/00 ,  H05B3/26

CPC分类号： G01N27/4067 ,  H05B1/0247 ,  H05B3/0014 ,  H05B3/265

摘要： A heater section includes a plate-like ceramic body (a first substrate layer 1, a second substrate layer 2, and a third substrate layer 3) having a longitudinal direction (front-rear direction) and a short-length direction (left-right direction), and a heater 72 disposed within the plate-like ceramic body and including a lead section 79 and a heating section 76 connected to the lead section 79. The heating section 76 includes a straight portion 78 extending along the longitudinal direction, and a lead side curved portion 77b connected to one of the ends of the straight portion 78 closer to the lead section 79. The lead side curved portion 77b has a lower resistance per unit length than the straight portion 78 at one or more temperatures in the range of 700° C. to 900° C.

公开(公告)号：US10712307B2

公开(公告)日：2020-07-14

申请号：US15238817

申请日：2016-08-17

申请人： NGK INSULATORS, LTD.

发明人： Yusuke Watanabe ,  Takao Murase ,  Masashi Yasui ,  Rui Sakaguchi

IPC分类号： G01N27/406 ,  H05B1/02 ,  H05B3/26

摘要： A heater 72 of a heater portion includes linear portions 78 and bend portions 77. A resistance value per unit length of the bend portions 77 at least at a temperature within a temperature range of no less than 700° C. and no more than 900° C. is lower than a resistance value per unit length of the linear portions 78.

公开(公告)号：US10900920B2

公开(公告)日：2021-01-26

申请号：US16434594

申请日：2019-06-07

申请人： NGK INSULATORS, LTD.

发明人： Yusuke Watanabe ,  Takao Murase ,  Masashi Yasui

IPC分类号： G01N27/00 ,  G01N27/02 ,  G01N27/407 ,  G01N33/00

摘要： A gas sensor 10 includes a tubular protective cover 30 having an element chamber 37 therein and configured to allow a measured gas to flow from the outside into the element chamber 37; and a long sensor element 20 including a detecting portion 23 located in the element chamber 37 and configured to detect a specified gas concentration in the measured gas. An inclination angle θt of an axial direction of the sensor element 20 (i.e., a direction parallel to an element axis A1) in the element chamber 37 with respect to an axial direction of the protective cover 30 (i.e., a direction parallel to a cover axis A2) is 1° or greater.

公开(公告)号：US10527578B2

公开(公告)日：2020-01-07

申请号：US15238855

申请日：2016-08-17

申请人： NGK INSULATORS, LTD.

发明人： Yusuke Watanabe ,  Takao Murase ,  Masashi Yasui

IPC分类号： H05B3/00 ,  G01N27/406 ,  H05B1/02 ,  H05B3/26

摘要： A heater section includes a plate-like ceramic body (a first substrate layer 1, a second substrate layer 2, and a third substrate layer 3) having a longitudinal direction (front-rear direction) and a short-length direction (left-right direction), and a heater 72 disposed within the plate-like ceramic body and including a lead section 79 and a heating section 76 connected to the lead section 79. The heating section 76 includes a straight portion 78 extending along the longitudinal direction, and a lead side curved portion 77b connected to one of the ends of the straight portion 78 closer to the lead section 79. The lead side curved portion 77b has a lower resistance per unit length than the straight portion 78 at one or more temperatures in the range of 700° C. to 900° C.

公开(公告)号：US10514349B2

公开(公告)日：2019-12-24

申请号：US15248160

申请日：2016-08-26

申请人： NGK INSULATORS, LTD.

发明人： Yusuke Watanabe ,  Takao Murase ,  Masashi Yasui

IPC分类号： G01N27/00 ,  G01N27/02 ,  G01N33/00 ,  G01N27/407

摘要： A gas sensor 10 includes a tubular protective cover 30 having an element chamber 37 therein and configured to allow a measured gas to flow from the outside into the element chamber 37; and a long sensor element 20 including a detecting portion 23 located in the element chamber 37 and configured to detect a specified gas concentration in the measured gas. An inclination angle θt of an axial direction of the sensor element 20 (i.e., a direction parallel to an element axis A1) in the element chamber 37 with respect to an axial direction of the protective cover 30 (i.e., a direction parallel to a cover axis A2) is 1° or greater.

公开(公告)号：US11567032B2

公开(公告)日：2023-01-31

申请号：US16879163

申请日：2020-05-20

申请人： NGK INSULATORS, LTD.

发明人： Yusuke Watanabe ,  Takao Murase ,  Masashi Yasui ,  Rui Sakaguchi

IPC分类号： G01N27/40 ,  H05B1/02 ,  H05B3/26 ,  G01N27/406

摘要： The heater 72 of the heater portion includes the linear portions 78 and the bend portions 77. A resistance value per unit length of the bend portions 77 at least at a temperature within a temperature range of no less than 700° C. and no more than 900° C. is lower than a resistance value per unit length of the linear portions 78.

公开(公告)号：US10775333B2

公开(公告)日：2020-09-15

申请号：US16434559

申请日：2019-06-07

申请人： NGK INSULATORS, LTD.

发明人： Yusuke Watanabe ,  Takao Murase ,  Masashi Yasui

IPC分类号： G01N27/00 ,  G01N27/02 ,  G01N27/407 ,  G01N33/00

摘要： A gas sensor 10 includes a tubular protective cover 30 having an element chamber 37 therein and configured to allow a measured gas to flow from the outside into the element chamber 37. The gas sensor 10 also includes a long sensor element 20, including a detecting portion 23 located in the element chamber 37 and configured to detect a specified gas concentration in the measured gas, and an insulator 45 having an inclined through-hole into which the sensor element 20 is inserted. An inclination angle θt of an axial direction of the sensor element 20 (i.e., a direction parallel to an element axis A1) in the element chamber 37 with respect to an axial direction of the protective cover 30 (i.e., a direction parallel to a cover axis A2) is 1° or greater.

公开(公告)号：US09989506B2

公开(公告)日：2018-06-05

申请号：US15241378

申请日：2016-08-19

申请人： NGK INSULATORS, LTD.

发明人： Yusuke Watanabe ,  Takao Murase ,  Masashi Yasui

IPC分类号： G01N33/00 ,  G01N27/407 ,  G01N27/411

CPC分类号： G01N33/0027 ,  G01N27/4077 ,  G01N27/4118

摘要： Provided is a gas sensor in which a protective cover has no looseness even by repetitive use. The gas sensor includes a sensor element for detecting a predetermined measurement target gas component in a measurement gas; a protective cover which protects a side of one end portion of the sensor element; and a housing which houses the sensor element. The protective cover includes a brim portion at one end portion of an outer surface of the protective cover. The brim portion is brought into contact with a contact surface provided in said housing, and is held between a swaging portion and the contact surface, the swaging portion extending from the contact surface while bending, so that the protective cover is fixed to the housing. The brim portion is tilted at a tilt angle of 5° or more and 15° or less relative to a plane vertical to a central axis of the gas sensor.