WO2012099232A1 - ヒータおよびこれを備えたグロープラグ - Google Patents
ヒータおよびこれを備えたグロープラグ Download PDFInfo
- Publication number
- WO2012099232A1 WO2012099232A1 PCT/JP2012/051170 JP2012051170W WO2012099232A1 WO 2012099232 A1 WO2012099232 A1 WO 2012099232A1 JP 2012051170 W JP2012051170 W JP 2012051170W WO 2012099232 A1 WO2012099232 A1 WO 2012099232A1
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- WIPO (PCT)
- Prior art keywords
- resistor
- lead
- joint
- heater
- leads
- Prior art date
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- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 abstract description 10
- 239000000758 substrate Substances 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 25
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 25
- 239000000919 ceramic Substances 0.000 description 20
- 239000000463 material Substances 0.000 description 9
- 230000035882 stress Effects 0.000 description 8
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- -1 Y 2 O 3 Chemical class 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
- F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
-
- 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
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/18—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
-
- 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
-
- 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
- the present invention is, for example, for a heater for ignition or flame detection in a combustion-type in-vehicle heating device, a heater for ignition of various combustion devices such as an oil fan heater, a heater for a glow plug of an automobile engine, and various sensors such as an oxygen sensor.
- the present invention relates to a heater used for a heater, a heater for heating a measuring instrument, and a glow plug including the heater.
- a glow plug used as an ignition assist for a diesel engine is, for example, a resistor having a folded shape, a pair of leads joined to each end of the resistor, and a resistor embedded in the front and a rear side.
- the heater includes a heater including an insulating base in which the pair of leads are embedded. Glow plugs having such a configuration are required to have higher temperatures and higher durability, such as being used as afterglows for exhaust gas purification in order to comply with stricter environmental regulations.
- the load is still large due to the shrinkage difference between the resistor and the lead.
- the resistor and the lead overlap in the direction perpendicular to the axial direction of the lead, and the joint between the both ends of the resistor and the lead is located on the cross section cut in the width direction perpendicular to the axial direction of the lead. This is because the stress due to thermal expansion in the width direction at each joint is synthesized especially at the time of rapid temperature rise.
- the periphery of the joint between the resistor and the lead, in particular, the opposing joint of the insulating base Micro cracks are likely to occur between the parts, and there is a risk of causing dielectric breakdown (short) between the leads.
- the present invention has been made in view of the above circumstances, and provides a heater and a glow plug provided with the heater, in which a joint between the resistor and the lead is prevented from cracking and causing dielectric breakdown between the leads. For the purpose.
- the heater according to the present invention includes a resistor having a folded shape, a pair of leads joined to respective ends of the resistor, the resistor being embedded at the front, and the pair of leads being embedded at the rear.
- the rear end of the joint portion with the lead is located behind the rear end of the joint portion between the other end portion of the resistor and the lead.
- the heater of the present invention is characterized in that, in the above configuration, the lead surrounds an end portion of the resistor when viewed in a cross section perpendicular to the axial direction of the lead in the joint portion. Is.
- the heater of the present invention is characterized in that, in the above configuration, one end of the resistor is on the positive electrode side.
- the heater of the present invention in the above configuration, has a position of a tip of the joint between the one end of the resistor and the lead, and the joint of the other end of the resistor and the lead.
- the position of the tip of the lead is different with respect to the axial direction of the lead.
- the tip of the joint portion between the one end portion of the resistor and the lead is the tip of the joint portion between the other end portion of the resistor and the lead. It is located behind the rear end.
- a glow plug according to the present invention includes the heater according to any one of the above configurations, and a metal holding member that is electrically connected to one end of the pair of leads and holds the heater. It is characterized by that.
- the rear end of the joined portion between the one end of the resistor and the lead is located behind the rear end of the joined portion of the other end of the resistor and the lead.
- FIG. 1 It is a longitudinal section showing an example of an embodiment of a heater of the present invention.
- A) is an enlarged cross-sectional view in which a region A including a junction between the resistor and the lead shown in FIG. 1 is enlarged, and (b) is a cross-sectional view taken along line XX shown in (a).
- A) is the expanded sectional view which expanded the area
- FIG. 1 is a longitudinal sectional view showing an example of an embodiment of a heater according to the present invention.
- FIG. 2A is an enlarged cross-sectional view of an area A including a junction between the resistor and the lead shown in FIG. 1
- FIG. 2B is a cross-sectional view taken along line XX shown in FIG. It is sectional drawing.
- FIG. 3A is an enlarged cross-sectional view showing a region including a joint portion between a resistor and a lead, showing another example of the embodiment of the heater of the present invention
- FIG. It is XX sectional drawing shown to (a).
- the heater 1 includes a resistor 3 having a folded shape, a pair of leads 4 joined to respective ends of the resistor 3, and a pair of resistors 3 embedded in the front and a pair of rearwardly. And the insulating base 2 in which the lead 4 is embedded.
- the resistor 3 and the lead 4 overlap in a direction perpendicular to the axial direction of the lead 4.
- the rear end of the joint portion 51 between one end of the body 3 and the lead 4 is located behind the rear end of the joint portion 52 between the other end of the resistor 3 and the lead 4.
- the insulating base 2 in the heater 1 of the present embodiment is formed, for example, in a rod shape or a plate shape.
- a resistor 3 and a pair of leads 4 are embedded in the insulating base 2.
- the insulating base 2 is made of ceramics, which makes it possible to provide the heater 1 with high reliability at the time of rapid temperature rise.
- ceramics having electrical insulation properties such as oxide ceramics, nitride ceramics, carbide ceramics can be used.
- the insulating substrate 2 is preferably made of silicon nitride ceramics. This is because silicon nitride ceramics is superior in terms of high strength, high toughness, high insulation, and heat resistance because silicon nitride, which is a main component, is used.
- the insulating base 2 made of a silicon nitride ceramic is, for example, 3 to 12% by mass of a rare earth such as Y 2 O 3 , Yb 2 O 3 , Er 2 O 3 as a sintering aid with respect to silicon nitride as a main component.
- Element oxide, 0.5 to 3% by mass of Al 2 O 3 , and SiO 2 are mixed so that the amount of SiO 2 contained in the sintered body is 1.5 to 5% by mass, and formed into a predetermined shape. It can be obtained by hot press firing at 1650-1780 ° C.
- the length of the insulating base 2 is, for example, 20 to 50 mm, and the diameter of the insulating base 2 is, for example, 3 to 5 mm.
- the coefficient of thermal expansion of the silicon nitride ceramic that is the base material can be brought close to the coefficient of thermal expansion of the resistor 3, and the durability of the heater 1 can be improved.
- the resistor 3 embedded in the insulating substrate 2 has a folded section in the longitudinal cross section, and the heat generating portion 31 that generates most heat near the center of the folded shape located at the tip (near the middle point of the folding). Yes.
- the resistor 3 is embedded at the front end side of the insulating base 2, and the distance from the front end of the resistor 3 (near the center of the folded shape) to the rear end of the resistor 3 (rear end of the joint portion 51) is 2 for example. Formed to ⁇ 10 mm.
- the cross-sectional shape of the resistor 3 may be any shape such as a circle, an ellipse, or a rectangle, and is usually formed so that the cross-sectional area is smaller than a lead 4 described later.
- the material for forming the resistor 3 a material mainly composed of carbides such as W, Mo, Ti, nitrides, silicides, and the like can be used.
- the insulating base 2 is made of silicon nitride ceramics
- tungsten carbide (WC) is one of the above-mentioned materials in that the difference in thermal expansion coefficient from the insulating base 2 is small, the heat resistance is high, and the specific resistance is small.
- the resistor 3 is preferably composed mainly of WC of an inorganic conductor, and the content of silicon nitride added thereto is 20% by mass or more.
- the conductor component serving as the resistor 3 has a higher coefficient of thermal expansion than silicon nitride, and thus is usually in a state where tensile stress is applied.
- the thermal expansion coefficient is brought close to that of the insulating base 2, and the stress due to the difference in thermal expansion coefficient between the temperature rise and the temperature drop of the heater 1 is relieved. be able to.
- the content of silicon nitride contained in the resistor 3 is 40% by mass or less, the resistance value of the resistor 3 can be made relatively small and stabilized.
- the content of silicon nitride contained in the resistor 3 is preferably 20% by mass to 40% by mass. More preferably, the silicon nitride content is 25% by mass to 35% by mass. Further, as a similar additive to the resistor 3, boron nitride can be added in an amount of 4% by mass to 12% by mass instead of silicon nitride.
- the lead 4 embedded in the insulating base 2 is connected to the resistor 3 at one end side, and the other end is led out to the surface of the insulating base 2.
- leads 4 are respectively joined to both end portions (one end portion and the other end portion) of a resistor 3 having a folded shape from one end to the other end.
- One lead 4 has one end connected to one end of the resistor 3 and the other end exposed from the side surface near the rear end of the insulating base 2.
- the other lead 4 has one end connected to the other end of the resistor 3 and the other end exposed from the rear end of the insulating base 2.
- the lead 4 is formed using the same material as that of the resistor 3.
- the lead 4 has a larger cross-sectional area than the resistor 3, and the content of the forming material of the insulating base 2 is less than that of the resistor 3. By doing so, the resistance value per unit length is low.
- WC is suitable as a material for the lead 4 in that the difference in coefficient of thermal expansion from the insulating substrate 2 is small, the heat resistance is high, and the specific resistance is small.
- the lead 4 is preferably composed mainly of WC, which is an inorganic conductor, and silicon nitride is added to the lead 4 so that the content is 15% by mass or more.
- the thermal expansion coefficient of the lead 4 can be made closer to the thermal expansion coefficient of silicon nitride constituting the insulating base 2. Further, when the content of silicon nitride is 40% by mass or less, the resistance value of the lead 4 becomes small and stable. Accordingly, the silicon nitride content is preferably 15% by mass to 40% by mass. More preferably, the silicon nitride content is 20% by mass to 35% by mass.
- the resistor 3 and the lead 4 overlap in a direction perpendicular to the axial direction of the lead 4, and one end of the resistor 3 and the lead 4 are overlapped.
- the rear end of the joint portion 51 is positioned behind the rear end of the joint portion 52 between the other end portion of the resistor 3 and the lead 4.
- the resistor 3 and the lead 4 overlap in a direction perpendicular to the axial direction of the lead 4.
- the resistor 3 and the lead 4 are included.
- the joint portions 51 and 52 are viewed in a longitudinal section including both the axes of the one lead 4 and the other lead 4
- the lead 4 is disposed inside and the resistor is disposed outside, and the joint surface is the lead 4.
- the shape is inclined from the direction perpendicular to the axial direction.
- the lengths of the joints 51 and 52 in the axial direction of the respective leads 4 (the distance from the front end to the rear end of the joints 51 and 52 is, for example, 0.5-3 mm.
- Examples of the shape of the joint portions 51 and 52 include a shape in which the joint surface is inclined from a direction perpendicular to the axial direction of the lead 4 as seen in the longitudinal section of the heater 1 as shown in FIG.
- the shape is not limited and includes a shape in which the lead 4 surrounds the end of the resistor 3 when viewed in a cross section perpendicular to the axial direction of the lead 4 as shown in FIG.
- the thermal stress applied to the rear ends of the joint portions 51 and 52 that are most thermally expanded at the time of rapid temperature rise is the lead. Due to the stress in the width direction synthesized in the width direction perpendicular to the axial direction, microcracks are likely to occur, and there is a risk of causing dielectric breakdown (short) between the leads.
- the rear end of the joint 51 between the one end of the resistor 3 and the lead 4 is located behind the rear end of the joint 52 between the other end of the resistor 3 and the lead 4. .
- the position of the rear end of the joint 51 and the position of the rear end of the joint 52 are different (displaced) in the axial direction of the lead 4.
- the rear end of the joint 51 is located 10 ⁇ m to 2 mm behind the rear end of the joint 52 with respect to the distance of deviation between the position of the rear end of the joint 51 and the position of the rear end of the joint 52. Is effective.
- one joint surface (for example, the joint surface on the positive electrode side) is perpendicular to the axial direction of the lead 4.
- the inclination angle inclined from the direction is preferably inclined by 0.1 to 15 degrees from the inclination angle inclined from the direction perpendicular to the axial direction of the lead 4 of the other bonding surface (for example, the bonding surface on the negative electrode side).
- the stress in the width direction formed by combining the thermal stress applied to the rear end of each joint that is most thermally expanded at the time of rapid temperature increase in the width direction perpendicular to the axial direction of the lead 4 is reduced. Since the load is small, it is possible to make it difficult for dielectric breakdown (short circuit).
- the lead 4 surrounds the end portion of the resistor 3 when viewed in a cross section perpendicular to the axial direction of the lead 4 at the joint portions 51 and 52.
- the lead 4 covering the resistor 3 that thermally expands at the time of rapid temperature rise serves as a buffer material with insulating ceramics having different linear expansion coefficients, and the load can be reduced. Dielectric breakdown (short) can be made difficult.
- one end of the resistor 3 located on the rear side is on the positive electrode side.
- the resistor 3 junction portion in which the rear end of the positive electrode side joint portion 51 to which a load is applied first due to the inrush current at the time of current application is the most thermally expanded in the width direction perpendicular to the axial direction of the lead 4 52) (due to the absence of the resistor 3 when viewed in the width direction from the rear end of the joint 51), it is possible to disperse the load during repeated use. It becomes difficult.
- the position of the tip of the joint 51 between one end of the resistor 3 and the lead 4 and the position of the tip of the joint 52 between the other end of the resistor 3 and the lead 4 are the axis of the lead 4. It is preferable that the directions are different (shifted). According to this shape, not only the rear end of the joint portion 51 and the rear end of the joint portion 52 but also the front end of the joint portion 51 and the front end of the joint portion 52 are displaced with respect to the axial direction of the lead 4. The stress synthesized in the width direction perpendicular to the axial direction of the lead 4 is reduced, the load is reduced, and the dielectric breakdown (short circuit) is difficult to occur.
- the tip of the joint 51 between one end of the resistor 3 and the lead 4 is located behind the rear end of the joint 52 between the other end of the resistor 3 and the lead 4. Is preferred. According to this shape, since the joint portion 51 and the joint portion 52 are completely deviated with respect to the axial direction of the lead 4, almost no stress is synthesized in the width direction perpendicular to the axial direction of the lead 4 at the time of rapid temperature rise. The load becomes smaller and it becomes difficult for dielectric breakdown (short circuit).
- the above heater 1 can be used for a glow plug (not shown). That is, the glow plug (not shown) of the present invention is electrically connected to the end of one of the above-described heater 1 and a pair of leads 4 constituting the heater 1 and the heater 1.
- the structure includes a metal holding member (sheath metal fitting) to be held. With this structure, the heater 1 is less likely to cause dielectric breakdown (short circuit), and thus a glow plug that can be used for a long time can be realized.
- the heater 1 of the present embodiment can be formed by, for example, an injection molding method using a die having the shape of the resistor 3, the lead 4 and the insulating base 2 having the configuration of the present embodiment.
- a conductive paste to be the resistor 3 and the lead 4 including the conductive ceramic powder and the resin binder is manufactured, and a ceramic paste to be the insulating base 2 including the insulating ceramic powder and the resin binder is manufactured.
- a conductive paste molded body (molded body a) having a predetermined pattern to be the resistor 3 is formed by an injection molding method or the like using the conductive paste. Then, with the molded body a held in the mold, the conductive paste is filled into the mold to form a conductive paste molded body (molded body b) having a predetermined pattern to be the leads 4. Thereby, the molded product a and the molded product b connected to the molded product a are held in the mold.
- a part of the mold is replaced with one for molding the insulating base 2, and then the ceramic paste that becomes the insulating base 2 in the mold Fill.
- a molded body (molded body d) of the heater 1 in which the molded body a and the molded body b are embedded in a ceramic paste molded body (molded body c) is obtained.
- the obtained molded body d is fired at a temperature of 1650 ° C. to 1780 ° C. and a pressure of 30 MPa to 50 MPa, whereby the heater 1 can be manufactured.
- the firing is preferably performed in a non-oxidizing gas atmosphere such as hydrogen gas.
- the heater 1 of this embodiment is completed.
- the heater of the example of the present invention was manufactured as follows.
- a conductive paste containing 50% by mass of tungsten carbide (WC) powder, 35% by mass of silicon nitride (Si 3 N 4 ) powder, and 15% by mass of a resin binder is injection-molded into a mold, as shown in FIG. A molded body a which becomes a resistor having a shape as shown was produced.
- WC tungsten carbide
- Si 3 N 4 silicon nitride
- the conductive paste serving as a lead is filled in the mold to be connected to the molded body a and have a shape as shown in FIG. A molded body b to be a lead was produced.
- the positions of the tip of the joint 51 and the tip of the joint 52 in the lead axis direction are the same, the length of the joint 51 in the lead axis direction is 0.9 mm, and the length of the joint 52 in the lead axis direction is 1.0.
- the position of the rear end of the joint 51 and the rear end of the joint 52 in the lead axis direction was shifted by 0.1 mm.
- the positions in the lead axis direction of the joint 51 and the tips of the joint 52 match, and the positions in the lead axis between the rear end of the joint 51 and the rear end of the joint 52 are the same. I made a glow plug.
- a cold cycle test was conducted using these glow plugs.
- the conditions of the thermal cycle test are as follows: First, energize the heater and set the applied voltage so that the temperature of the resistor is 1400 ° C. 1) Energize for 5 minutes, 2) Deenergize for 2 minutes 1), 2) The cycle was 10,000 cycles.
- the resistance change of the sample of the example of the present invention was 1% or less and no microcracks were observed.
- the resistance change of the sample of the comparative example was 5% or more, and microcracks were confirmed.
- Heater 2 Insulating substrate 3: Resistor 31: Heat generation part 4: Lead 51, 52: Joint
Abstract
Description
2:絶縁基体
3:抵抗体
31:発熱部
4:リード
51,52:接合部
Claims (6)
- 折返し形状をなした抵抗体と、該抵抗体のそれぞれの端部に接合された一対のリードと、
先方に前記抵抗体を埋設するとともに後方に前記一対のリードを埋設した絶縁基体とを備え、前記抵抗体と前記リードとの接合部において、前記リードの軸方向に垂直な方向に前記抵抗体と前記リードとが重なっており、
前記抵抗体の一方の端部と前記リードとの前記接合部の後端が、前記抵抗体の他方の端部と前記リードとの前記接合部の後端よりも後方に位置していることを特徴とするヒータ。 - 前記接合部において、前記リードの軸方向に垂直な断面で視たとき、前記リードが前記抵抗体の端部を取り囲んでいることを特徴とする請求項1に記載のヒータ。
- 前記抵抗体の一方の端部が正極側であることを特徴とする請求項1または請求項2に記載のヒータ。
- 前記抵抗体の一方の端部と前記リードとの前記接合部の先端の位置と前記抵抗体の他方の端部と前記リードとの前記接合部の先端の位置とが、前記リードの軸方向に関して異なっていることを特徴とする請求項1または請求項2に記載のヒータ。
- 前記抵抗体の一方の端部と前記リードとの前記接合部の先端が、前記抵抗体の他方の端部と前記リードとの前記接合部の後端よりも後方に位置していることを特徴とする請求項1または請求項2に記載のヒータ。
- 請求項1または請求項2に記載のヒータと、前記一対のリードのうちの一方のリードの端部に電気的に接続されるとともに前記ヒータを保持する金属製保持部材とを備えたグロープラグ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012800058798A CN103329615A (zh) | 2011-01-20 | 2012-01-20 | 加热器以及具有该加热器的电热塞 |
EP12736794.4A EP2667686B1 (en) | 2011-01-20 | 2012-01-20 | Heater and glow plug provided with same |
KR1020137019531A KR101488748B1 (ko) | 2011-01-20 | 2012-01-20 | 히터 및 이것을 구비한 글로 플러그 |
US13/980,628 US9291144B2 (en) | 2011-01-20 | 2012-01-20 | Heater and glow plug including the same |
JP2012553776A JP5827247B2 (ja) | 2011-01-20 | 2012-01-20 | ヒータおよびこれを備えたグロープラグ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011009953 | 2011-01-20 | ||
JP2011-009953 | 2011-01-20 |
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JP5701979B2 (ja) | 2011-04-27 | 2015-04-15 | 京セラ株式会社 | ヒータおよびこれを備えたグロープラグ |
JP5909573B2 (ja) * | 2015-03-24 | 2016-04-26 | 京セラ株式会社 | ヒータおよびこれを備えたグロープラグ |
JP6592103B2 (ja) * | 2015-11-27 | 2019-10-16 | 京セラ株式会社 | ヒータおよびこれを備えたグロープラグ |
JP6740995B2 (ja) * | 2017-06-30 | 2020-08-19 | 株式会社デンソー | 電気抵抗体、ハニカム構造体、および、電気加熱式触媒装置 |
JP6879190B2 (ja) * | 2017-12-19 | 2021-06-02 | 株式会社デンソー | 電気抵抗体、ハニカム構造体、および、電気加熱式触媒装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61186971U (ja) * | 1985-05-09 | 1986-11-21 | ||
JP2000130754A (ja) * | 1998-10-26 | 2000-05-12 | Ngk Spark Plug Co Ltd | セラミックグロープラグ |
JP2002334768A (ja) | 2001-05-02 | 2002-11-22 | Ngk Spark Plug Co Ltd | セラミックヒータ及びそれを用いたグロープラグ |
JP2003022889A (ja) | 2001-05-02 | 2003-01-24 | Ngk Spark Plug Co Ltd | セラミックヒータ、それを用いたグロープラグ及びセラミックヒータの製造方法 |
JP2006049279A (ja) * | 2004-06-29 | 2006-02-16 | Ngk Spark Plug Co Ltd | セラミックヒータ、グロープラグ及びセラミックヒータの製造方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61195580A (ja) * | 1985-02-22 | 1986-08-29 | 京セラ株式会社 | セラミツクヒ−タ |
JPH01313362A (ja) * | 1988-06-09 | 1989-12-18 | Ngk Spark Plug Co Ltd | セラミック発熱体およびその製造方法 |
JP3044630B2 (ja) | 1991-02-06 | 2000-05-22 | ボッシュ ブレーキ システム株式会社 | セラミックヒータ型グロープラグ |
JP2804393B2 (ja) * | 1991-07-31 | 1998-09-24 | 京セラ株式会社 | セラミックヒータ |
WO1997038223A1 (fr) * | 1996-04-10 | 1997-10-16 | Denso Corporation | Bougie de prechauffage, son procede de fabrication, et detecteur de courant ionique |
JPH10208853A (ja) * | 1996-11-19 | 1998-08-07 | Ngk Spark Plug Co Ltd | セラミックヒータ、およびその製造方法 |
US6483089B1 (en) * | 1999-05-26 | 2002-11-19 | Aladdin Temp-Rite, Llc | Heat retentive food storage/delivery container and system |
JP3810947B2 (ja) | 1999-06-16 | 2006-08-16 | ボッシュ株式会社 | セラミックヒータ型グロープラグ |
JP3889536B2 (ja) * | 1999-10-29 | 2007-03-07 | 日本特殊陶業株式会社 | セラミックヒータ及びその製造方法、並びに該セラミックヒータを備えるグロープラグ |
JP2001165440A (ja) * | 1999-12-08 | 2001-06-22 | Ngk Spark Plug Co Ltd | グロープラグ及びその製造方法 |
JP2001324141A (ja) * | 2000-05-16 | 2001-11-22 | Bosch Automotive Systems Corp | セラミックヒータ型グロープラグおよびその製造方法 |
JP4253444B2 (ja) * | 2001-02-21 | 2009-04-15 | 日本特殊陶業株式会社 | セラミックグロープラグ |
US6653601B2 (en) | 2001-05-02 | 2003-11-25 | Ngk Spark Plug Co., Ltd. | Ceramic heater, glow plug using the same, and method for manufacturing the same |
JP2003148731A (ja) * | 2001-08-28 | 2003-05-21 | Ngk Spark Plug Co Ltd | グロープラグ |
EP1612486B1 (en) | 2004-06-29 | 2015-05-20 | Ngk Spark Plug Co., Ltd | Glow plug |
WO2007013497A1 (ja) * | 2005-07-26 | 2007-02-01 | Kyocera Corporation | ロウ付け構造体、セラミックヒータおよびグロープラグ |
JP5188506B2 (ja) * | 2007-10-29 | 2013-04-24 | 京セラ株式会社 | セラミックヒータおよびこれを備えたグロープラグ |
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- 2012-01-20 JP JP2012553776A patent/JP5827247B2/ja active Active
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- 2012-01-20 CN CN2012800058798A patent/CN103329615A/zh active Pending
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61186971U (ja) * | 1985-05-09 | 1986-11-21 | ||
JP2000130754A (ja) * | 1998-10-26 | 2000-05-12 | Ngk Spark Plug Co Ltd | セラミックグロープラグ |
JP2002334768A (ja) | 2001-05-02 | 2002-11-22 | Ngk Spark Plug Co Ltd | セラミックヒータ及びそれを用いたグロープラグ |
JP2003022889A (ja) | 2001-05-02 | 2003-01-24 | Ngk Spark Plug Co Ltd | セラミックヒータ、それを用いたグロープラグ及びセラミックヒータの製造方法 |
JP2006049279A (ja) * | 2004-06-29 | 2006-02-16 | Ngk Spark Plug Co Ltd | セラミックヒータ、グロープラグ及びセラミックヒータの製造方法 |
Also Published As
Publication number | Publication date |
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CN103329615A (zh) | 2013-09-25 |
EP2667686A4 (en) | 2017-06-21 |
US9291144B2 (en) | 2016-03-22 |
JP6139629B2 (ja) | 2017-05-31 |
KR101488748B1 (ko) | 2015-02-03 |
US20130291819A1 (en) | 2013-11-07 |
JP2016006803A (ja) | 2016-01-14 |
KR20130103612A (ko) | 2013-09-23 |
EP2667686A1 (en) | 2013-11-27 |
EP2667686B1 (en) | 2019-03-13 |
JPWO2012099232A1 (ja) | 2014-06-30 |
JP5827247B2 (ja) | 2015-12-02 |
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