WO2015129722A1 - ヒータおよびグロープラグ - Google Patents
ヒータおよびグロープラグ Download PDFInfo
- Publication number
- WO2015129722A1 WO2015129722A1 PCT/JP2015/055334 JP2015055334W WO2015129722A1 WO 2015129722 A1 WO2015129722 A1 WO 2015129722A1 JP 2015055334 W JP2015055334 W JP 2015055334W WO 2015129722 A1 WO2015129722 A1 WO 2015129722A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ceramic body
- lead terminal
- hole
- heater
- metal cap
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/027—Heaters specially adapted for glow plug igniters
Definitions
- a metal cap that is attached to an end on the end surface side and covers at least a part of the conductor layer and the end surface through a gap and has a through hole, and is inserted into the through hole and electrically connected to the conductor layer
- the lead terminal has a portion in which an end located in the gap is located outside the through hole when viewed from the through direction of the through hole. It is a heater.
- FIG. 1 is a sectional view showing the heater 10.
- the heater 10 includes a ceramic body 1, a heating resistor 2 embedded in the ceramic body 1, and a metal cap 4 that covers one end side of the ceramic body 1.
- a conductor layer 3 is further provided on one end side of the ceramic body 1 as shown in FIG. 2.
- the region where the conductor layer 3 is provided is indicated by hatching.
- the ceramic body 1 is a member formed in a rod shape, for example.
- the ceramic body 1 is provided with a tapered portion 11 on one end side.
- an electrically insulating ceramic such as an oxide ceramic, a nitride ceramic, or a carbide ceramic is used.
- alumina ceramics, silicon nitride ceramics, aluminum nitride ceramics, silicon carbide ceramics, or the like can be used.
- the ceramic body 1 is preferably made of silicon nitride ceramics. Silicon nitride ceramics are excellent in that silicon nitride as a main component has high strength, high toughness, high insulation and high heat resistance.
- the ceramic body 1 is made of silicon nitride ceramics and the heating resistor 2 is made of molybdenum (Mo) or tungsten (W), the ceramic body 1 has MoSi 2 or WSi. It is preferable to mix and disperse 2 etc. Thereby, the thermal expansion coefficient of the silicon nitride ceramics which is a base material can be brought close to the thermal expansion coefficient of the heating resistor 2, and the durability of the heater 10 can be improved.
- the metal cap 4 has a shape corresponding to the tapered shape on one end side of the ceramic body 1.
- the bottom 41 is a substantially circular plate shape having the through hole 7 in the center.
- the side portion 42 has a shape in which the shape of the side portion 42 is substantially annulus and widens as the distance from the bottom portion 41 is viewed in a cross section perpendicular to the axial direction of the ceramic body 1.
- the metal cap 4 is attached to the ceramic body 1 such that the bottom portion 41 faces one end of the ceramic body 1 and the side portion 42 annularly covers a part of the side surface of the tapered portion 11 from one end.
- the side portion 42 is provided with a slit 43. Thereby, possibility that the thermal stress resulting from the thermal expansion difference of the metal cap 4 and the ceramic body 1 will arise in the metal cap 4 can be reduced.
- the shape of the metal cap 4 can be changed as appropriate according to the shape of the ceramic body 1.
- the heater 10 further includes a lead terminal 5 that is inserted into the through hole 7 and joined to the metal cap 4.
- the lead terminal 5 is a member for electrically connecting the conductor layer 3 and an external electrode.
- the lead terminal 5 is made of a metal material such as nickel or stainless steel.
- the lead terminal 5 is a linear member, and the end 9 is located in the gap between the bottom 41 of the metal cap 4 and the conductor layer 3 provided on the end surface of the ceramic body 1. It is joined to.
- the metal cap 4 and the lead terminal 5 can be firmly bonded as compared with the case where the outer surface of the bottom 41 of the metal cap 4 and the lead terminal 5 are simply bonded.
- the end 9 of the lead terminal 5 extends in a disk shape. As a result, the possibility that stress is partially concentrated at the end portion 9 of the lead terminal 5 can be reduced. As a result, the durability of the lead terminal 5 can be improved.
- the end 9 of the lead terminal 5 is separated from the metal cap 4, and the metal cap 4, the conductor layer 3, and the end 9 of the lead terminal 5 are joined to the gap.
- a conductive bonding agent 8 is provided. In this way, when the conductive bonding agent 8 is provided, an external force that pulls the lead terminal 5, that is, an external force that presses the end 9 of the lead terminal 5 against the metal cap 4 is applied. In addition, since the bonding agent 8 works as a layer for relaxing the external force, the possibility that the lead terminal 5 is damaged can be reduced.
- the bonding agent 8 may be wet and spread between the bottom portion 41 and the conductor layer 3 and may not be wet and spread between the side portion 42 and the conductor layer 3. Thereby, the thermal stress produced between the metal cap 4 and the ceramic body 1 can be reduced.
- the bonding agent 8 may be filled so as to fill the through hole 7. Thereby, the lead terminal 5 and the metal cap 4 can be firmly joined.
- the bonding agent 8 fills the through hole 7 and further crawls up to a portion of the lead terminal 5 located outside the metal cap 4. Thereby, the lead terminal 5 and the metal cap 4 can be joined more firmly.
- the conductive bonding agent 8 for example, a brazing material may be used. 1 to 3, the illustration of the bonding agent 8 is omitted for the sake of easy viewing.
- the metal member 6 and the ceramic body 1 are joined by a brazing material.
- the brazing material is provided so as to surround the end of the ceramic body 1.
- the brazing material is provided in layers on the entire circumference of the end of the ceramic body 1.
- the axially extending portion of the lead terminal 5 and the disc-shaped portion of the end portion 9 may be integrally formed, but may be formed separately. Specifically, as shown in FIG. 8, a portion extending in the axial direction of the lead terminal 5 is made into a nail shape, and an end portion 9 wider than the nail-shaped head portion 51 is formed in the through hole 7 and the nail shape. You may arrange
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Abstract
Description
11:テーパー部
2:発熱抵抗体
21:発熱部
22:導出部
3:導体層
4:金属キャップ
41:底部
42:側部
43:スリット
5:リード端子
6:金属部材
7:貫通孔
8:接合剤
9:端部
10:ヒータ
100:グロープラグ
Claims (5)
- 棒状のセラミック体と、該セラミック体に埋設された発熱抵抗体と、前記セラミック体の少なくとも一方の端面に設けられて前記発熱抵抗体と電気的に接続された導体層と、前記セラミック体の前記端面側の端部に取り付けられた、前記導体層の少なくとも一部および前記端面を隙間を介して覆うとともに貫通孔を有する金属キャップと、前記貫通孔に挿入されて前記導体層と電気的に接続されたリード端子とを備えており、
該リード端子は、前記貫通孔の貫通方向から見たときに、前記隙間に位置している端部が前記貫通孔よりも外側に位置する部分を有しているヒータ。 - 前記リード端子の前記端部が円盤状に広がっている請求項1に記載のヒータ。
- 前記リード端子の前記端部が前記金属キャップから離れており、前記隙間に前記金属キャップ、前記導体層および前記リード端子の前記端部を接合する導電性の接合剤が設けられている請求項1または2に記載のヒータ。
- 前記リード端子の前記端部が前記導体層から離れている請求項1乃至3のいずれかに記載のヒータ。
- 請求項1乃至請求項4のいずれかに記載のヒータと、前記セラミック体に前記端面側の側面を覆うように取り付けられた筒状の金属部材とを備えたグロープラグ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016505248A JP6204566B2 (ja) | 2014-02-26 | 2015-02-25 | ヒータおよびグロープラグ |
EP15754614.4A EP3113575B1 (en) | 2014-02-26 | 2015-02-25 | Heater and glowplug |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014035719 | 2014-02-26 | ||
JP2014-035719 | 2014-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015129722A1 true WO2015129722A1 (ja) | 2015-09-03 |
Family
ID=54009039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/055334 WO2015129722A1 (ja) | 2014-02-26 | 2015-02-25 | ヒータおよびグロープラグ |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3113575B1 (ja) |
JP (1) | JP6204566B2 (ja) |
WO (1) | WO2015129722A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6391432A (ja) * | 1986-10-03 | 1988-04-22 | Jidosha Kiki Co Ltd | デイ−ゼルエンジン用グロ−プラグの製造方法 |
JPS6380456U (ja) * | 1986-11-10 | 1988-05-27 | ||
JPH0443721Y2 (ja) * | 1985-04-17 | 1992-10-15 | ||
JP2005315447A (ja) * | 2004-04-27 | 2005-11-10 | Kyocera Corp | セラミックヒーターおよびグロープラグ |
WO2009096477A1 (ja) * | 2008-01-29 | 2009-08-06 | Kyocera Corporation | セラミックヒータおよびグロープラグ |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60114630A (ja) * | 1983-11-28 | 1985-06-21 | Jidosha Kiki Co Ltd | デイ−ゼルエンジン用グロ−プラグの製造方法 |
JPS60216126A (ja) * | 1984-04-12 | 1985-10-29 | Ngk Spark Plug Co Ltd | 二線式セラミツクグロ−プラグ |
JPS6176824A (ja) * | 1984-09-19 | 1986-04-19 | Jidosha Kiki Co Ltd | デイ−ゼルエンジン用グロ−プラグの製造方法 |
JPS62175523A (ja) * | 1986-01-27 | 1987-08-01 | Jidosha Kiki Co Ltd | デイ−ゼルエンジン用グロ−プラグ |
JPH07167434A (ja) * | 1993-12-15 | 1995-07-04 | Nippondenso Co Ltd | グロープラグ |
JP2002257341A (ja) * | 2001-02-26 | 2002-09-11 | Kyocera Corp | セラミックグロープラグ |
DE102009048643B4 (de) * | 2009-09-30 | 2013-11-28 | Borgwarner Beru Systems Gmbh | Glühkerze und Verfahren zum Verbinden eines Stifts aus einer Funktionskeramik mit einer Metallhülse |
-
2015
- 2015-02-25 JP JP2016505248A patent/JP6204566B2/ja active Active
- 2015-02-25 EP EP15754614.4A patent/EP3113575B1/en active Active
- 2015-02-25 WO PCT/JP2015/055334 patent/WO2015129722A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0443721Y2 (ja) * | 1985-04-17 | 1992-10-15 | ||
JPS6391432A (ja) * | 1986-10-03 | 1988-04-22 | Jidosha Kiki Co Ltd | デイ−ゼルエンジン用グロ−プラグの製造方法 |
JPS6380456U (ja) * | 1986-11-10 | 1988-05-27 | ||
JP2005315447A (ja) * | 2004-04-27 | 2005-11-10 | Kyocera Corp | セラミックヒーターおよびグロープラグ |
WO2009096477A1 (ja) * | 2008-01-29 | 2009-08-06 | Kyocera Corporation | セラミックヒータおよびグロープラグ |
Also Published As
Publication number | Publication date |
---|---|
EP3113575A1 (en) | 2017-01-04 |
JP6204566B2 (ja) | 2017-09-27 |
EP3113575B1 (en) | 2019-12-18 |
JPWO2015129722A1 (ja) | 2017-03-30 |
EP3113575A4 (en) | 2017-10-11 |
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