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JP7129485B2 - Heater and heating tool with the same - Google Patents

Heater and heating tool with the same Download PDF

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Publication number
JP7129485B2
JP7129485B2 JP2020545957A JP2020545957A JP7129485B2 JP 7129485 B2 JP7129485 B2 JP 7129485B2 JP 2020545957 A JP2020545957 A JP 2020545957A JP 2020545957 A JP2020545957 A JP 2020545957A JP 7129485 B2 JP7129485 B2 JP 7129485B2
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heater
glass material
projection
heating resistor
heated
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JPWO2020054554A1 (en
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昭 津川
良紀 長野
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Kyocera Corp
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Kyocera Corp
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    • 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—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F47/00—Smokers' requisites not otherwise provided for
    • 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

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  • Resistance Heating (AREA)

Description

本開示は、例えば被加熱物に先端部を接触させて、若しくは突き刺して加熱するヒータ、または内部に被加熱物を挿入して加熱する筒状のヒータに関するものである。 The present disclosure relates to, for example, a heater that heats an object by contacting or piercing an object to be heated, or a tubular heater that heats an object to be heated by inserting the object inside.

従来知られているヒータは、長手方向を有する絶縁性の基体と、基体に埋設された発熱抵抗体と、発熱抵抗体に電気的に接続された端子とを有している。 A conventionally known heater has an insulating substrate having a longitudinal direction, a heating resistor embedded in the substrate, and terminals electrically connected to the heating resistor.

特開平１１－１３５２３４号公報JP-A-11-135234

本開示のヒータは、棒状の第１部材と、該第１部材の内部または表面に位置する発熱抵抗体と、前記第１部材の端面に接合されており前記第１部材よりも熱伝導率が低い第２部材とを有し、前記第１部材がアルミナを有しており、前記第２部材がジルコニアを有している。 The heater of the present disclosure includes a rod-shaped first member, a heating resistor positioned inside or on the surface of the first member, and joined to an end surface of the first member, and has a thermal conductivity higher than that of the first member. a lower second member , the first member comprising alumina and the second member comprising zirconia .

また本開示の加熱具は、上記のヒータと、該ヒータを保持するフランジとを備える。 A heating tool of the present disclosure includes the heater described above and a flange that holds the heater.

本発明の目的、特色、および利点は、下記の詳細な説明と図面とからより明確になるであろう。
本開示のヒータの一例を示す断面図である。 ヒータの別の例を示す断面図である。 ヒータの別の例を示す断面図である。 ヒータの別の例を示す断面図である。 ヒータの別の例を示す断面図である。 ヒータの別の例を示す断面図である。 ヒータの別の例を示す断面図である。 ヒータの別の例を示す断面図である。 ヒータの別の例を示す断面図である。 ヒータの別の例を示す断面図である。 ヒータの別の例を示す断面図である。 本開示のタバコ用加熱具の一例を示す断面図である。 ヒータの別の例を示す斜視図である。 ヒータの別の例を示す斜視図である。 Objects, features and advantages of the present invention will become more apparent from the following detailed description and drawings.
1 is a cross-sectional view showing an example of a heater of the present disclosure; FIG. FIG. 4 is a cross-sectional view showing another example of a heater; FIG. 4 is a cross-sectional view showing another example of a heater; FIG. 4 is a cross-sectional view showing another example of a heater; FIG. 4 is a cross-sectional view showing another example of a heater; FIG. 4 is a cross-sectional view showing another example of a heater; FIG. 4 is a cross-sectional view showing another example of a heater; FIG. 4 is a cross-sectional view showing another example of a heater; FIG. 4 is a cross-sectional view showing another example of a heater; FIG. 4 is a cross-sectional view showing another example of a heater; FIG. 4 is a cross-sectional view showing another example of a heater; 1 is a cross-sectional view showing an example of a tobacco heating device of the present disclosure; FIG. FIG. 11 is a perspective view showing another example of a heater; FIG. 11 is a perspective view showing another example of a heater;

以下、ヒータ１０の一例について図面を参照して説明する。本開示のヒータ１０は、図１に示すように、第１部材１と、発熱抵抗体２と、第２部材３とを有している。 An example of the heater 10 will be described below with reference to the drawings. A heater 10 of the present disclosure includes a first member 1, a heating resistor 2, and a second member 3, as shown in FIG.

第１部材１は、発熱抵抗体２を保護するための部材である。第１部材１は、棒状の部材である。ここで、棒状の部材とは、長さ方向を有する部材であることを意味しており、第１部材１は、板状または柱状の部材であってもよいし、筒状の部材であってもよい。第１部材１は、絶縁材料からなり、例えば、セラミック材料を有していてもよい。 The first member 1 is a member for protecting the heating resistor 2 . The first member 1 is a rod-shaped member. Here, the rod-shaped member means a member having a longitudinal direction, and the first member 1 may be a plate-shaped or column-shaped member, or may be a tubular member. good too. The first member 1 is made of an insulating material and may for example comprise a ceramic material.

第１部材１の寸法は、例えば第１部材１が板状の場合は、主面の形状が長方形であるときに、長辺の長さを５～２０ｍｍに、短辺の長さを１～１０ｍｍに、厚さを０．０８～１ｍｍにすることができる。また、第１部材１は、端部に被加熱物を挿入しやすいように、先端が細くなっていてもよい。また、第１部材１は、先端または全体が反ってもよい。 For example, when the first member 1 is plate-shaped, the length of the long side is 5 to 20 mm and the length of the short side is 1 to 20 mm when the shape of the main surface is rectangular. At 10 mm, the thickness can be from 0.08 to 1 mm. Also, the first member 1 may have a tapered tip so that the object to be heated can be easily inserted into the end. Also, the first member 1 may be warped at its tip or as a whole.

また、第１部材１が筒状である場合は、長手方向の長さを５～２０ｍｍに、内径を８～２０ｍｍに、外径を８．５～２２ｍｍにすることができる。 Further, when the first member 1 is cylindrical, the length in the longitudinal direction can be 5 to 20 mm, the inner diameter can be 8 to 20 mm, and the outer diameter can be 8.5 to 22 mm.

発熱抵抗体２は、被加熱物を加熱するための部材である。発熱抵抗体２は、例えば第１部材１の表面または内部に設けることができる。発熱抵抗体２は、例えば線状または帯状の部材であってもよい。発熱抵抗体２は、例えば折返し部を有していてもよい。発熱抵抗体２は、外部電源に電気的に接続されていてもよい。発熱抵抗体２は、電流が流れることによって発熱し、被加熱物を加熱することができる。発熱抵抗体２は、第１部材１の長手方向に沿って設けられていてもよい。 The heating resistor 2 is a member for heating an object to be heated. The heating resistor 2 can be provided, for example, on the surface of or inside the first member 1 . The heating resistor 2 may be, for example, a linear or belt-shaped member. The heating resistor 2 may have, for example, a folded portion. The heating resistor 2 may be electrically connected to an external power supply. The heat generating resistor 2 generates heat when a current flows, and can heat an object to be heated. The heating resistor 2 may be provided along the longitudinal direction of the first member 1 .

発熱抵抗体２は、例えばタングステン、モリブデン、クロム、これらの炭化物または金、銀、パラジウム、白金等の金属からなる。また、発熱抵抗体２は、金属以外の成分として、アルミナまたは窒化ケイ素等を有していてもよい。発熱抵抗体２の寸法は、例えば長さが５～５０ｍｍ、幅が０．２～２ｍｍ、厚さが０．００５～０．１ｍｍである。 The heating resistor 2 is made of, for example, tungsten, molybdenum, chromium, carbides thereof, or metals such as gold, silver, palladium, and platinum. Also, the heating resistor 2 may contain alumina, silicon nitride, or the like as a component other than metal. The dimensions of the heating resistor 2 are, for example, 5 to 50 mm in length, 0.2 to 2 mm in width, and 0.005 to 0.1 mm in thickness.

発熱抵抗体２は、第１部材１の先端から後端まで設けられていてもよい。また、図１３および図１４に示すように、発熱抵抗体２は、引き出し部５および導線７に接続されていてもよい。このときに、引き出し部５は、発熱抵抗体２よりも電気抵抗値を小さくすることができる。これにより、引き出し部５における発熱を低減することができる。 The heating resistor 2 may be provided from the front end to the rear end of the first member 1 . Moreover, as shown in FIGS. 13 and 14, the heating resistor 2 may be connected to the lead portion 5 and the lead wire 7 . At this time, the lead portion 5 can have a smaller electric resistance value than the heating resistor 2 . Thereby, heat generation in the lead portion 5 can be reduced.

本開示のヒータ１０においては、図１に示すように、第１部材１の端面に接合されており第１部材１よりも熱伝導率が低い第２部材３を有している。これにより、ヒータ１０の先端温度を下げつつ、第１部材１の端面を第２部材３によって保護することができる。その結果、ヒータ１０を被加熱物に突き刺したときに、被加熱物の奥まで高温になるおそれを低減しつつ、ヒータ１０の耐久性を高めることができる。 In the heater 10 of the present disclosure, as shown in FIG. 1 , the second member 3 is joined to the end surface of the first member 1 and has a lower thermal conductivity than the first member 1 . Thereby, the end surface of the first member 1 can be protected by the second member 3 while the tip temperature of the heater 10 is lowered. As a result, when the heater 10 is pierced into the object to be heated, it is possible to increase the durability of the heater 10 while reducing the possibility that the object to be heated will reach a high temperature.

第２部材３は、第１部材１の端面に接合されており、これにより、ヒータ１０の先端の強度を高めることができる。第２部材３は、例えば板状、円錐状、円錐台状または円柱状であってもよく、これらの形状を組み合わせたものであってもよい。図１に示す例では、第２部材３は、円柱状である。第２部材３は、例えばジルコニアまたはアルミナ等のセラミック部材であってもよい。第１部材１よりも熱伝導率が低い第２部材３の例としては、例えば、第１部材１がアルミナのときは、第２部材３をジルコニアに、第１部材１が窒化アルミニウムのときは、第２部材３を窒化珪素に、することができる。 The second member 3 is joined to the end surface of the first member 1 , thereby increasing the strength of the tip of the heater 10 . The second member 3 may be, for example, plate-shaped, conical, truncated cone-shaped, or cylindrical, or a combination of these shapes. In the example shown in FIG. 1, the second member 3 is cylindrical. The second member 3 may be a ceramic member such as zirconia or alumina, for example. Examples of the second member 3 having a lower thermal conductivity than the first member 1 include, for example, when the first member 1 is alumina, the second member 3 is zirconia, and when the first member 1 is aluminum nitride, , the second member 3 can be made of silicon nitride.

また、第１部材１がアルミナを有しており、第２部材３がジルコニアを有していてもよい。これにより、ヒータ１０先端の第２部材３が弾性の高い部材であるため、ヒータ１０を被加熱物に突き刺したときに、第２部材３が破損するおそれを低減することができる。 Alternatively, the first member 1 may contain alumina and the second member 3 may contain zirconia. Accordingly, since the second member 3 at the tip of the heater 10 is a highly elastic member, it is possible to reduce the possibility of the second member 3 being damaged when the heater 10 is stuck into the object to be heated.

また、図２に示すように、第２部材３が先端に向かって細くなる形状を有していてもよい。これにより、被加熱物をヒータ１０の先端に突き刺しやすくすることができる。図２に示す例では、第２部材３は、円錐状である。 Moreover, as shown in FIG. 2, the second member 3 may have a shape that tapers toward the tip. This makes it easier to pierce the tip of the heater 10 with the object to be heated. In the example shown in FIG. 2, the second member 3 is conical.

また、第２部材３が先端に向かって細くなる形状としては、図３に示すように、円柱部分と円錐部分とが組み合わされた形状であってもよい。図３に示す例では、円柱部分の底面が、第１部材１の端面と同径の円形状であり、円錐部分の底面も同径の円形状である。本例の第２部材３の形状は、図２に示す形状に比べて、第２部材３の体積を大きくすることができる。熱伝導率が低い第２部材３の体積を大きくすることで、ヒータ１０の先端温度をさらに下げつつ、第１部材１の端面を第２部材３によって保護することができる。 Moreover, as a shape in which the second member 3 tapers toward the tip, as shown in FIG. 3, a shape in which a cylindrical portion and a conical portion are combined may be used. In the example shown in FIG. 3, the bottom surface of the columnar portion is circular with the same diameter as the end surface of the first member 1, and the bottom surface of the conical portion is also circular with the same diameter. The shape of the second member 3 of this example can increase the volume of the second member 3 as compared with the shape shown in FIG. By increasing the volume of the second member 3 with low thermal conductivity, it is possible to protect the end face of the first member 1 by the second member 3 while further lowering the tip temperature of the heater 10 .

上記のような第２部材３が先細状の場合、先端部分は曲面状（Ｒ状）であってもよい。これにより、ヒータ１０を被加熱物に突き刺したときに、第２部材３の先端部分が破損するおそれを低減することができる。 When the second member 3 is tapered as described above, the tip portion may be curved (R-shaped). As a result, it is possible to reduce the possibility that the tip portion of the second member 3 will be damaged when the heater 10 is pierced into the object to be heated.

また、図４に示すように、第１部材１と第２部材３とがガラス材料４により接合されていてもよい。これにより、第１部材１と第２部材３との接合の強度を高めることができる。また、図１３および図１４に示すように、第１部材１は円柱状の部材であって、第１部材１の端面の形状は円形状であって、第２部材３のうち第１部材１に接合する面の形状も円形状であってもよい。この場合は、ガラス接合の接合面積を広くすることができるため、ヒータ１０の強度をより高めることができる。 Moreover, as shown in FIG. 4, the first member 1 and the second member 3 may be joined together by a glass material 4 . Thereby, the strength of the joint between the first member 1 and the second member 3 can be increased. Further, as shown in FIGS. 13 and 14, the first member 1 is a cylindrical member, the shape of the end surface of the first member 1 is circular, and the first member 1 of the second member 3 The shape of the surface to be joined to may also be circular. In this case, since the bonding area for glass bonding can be increased, the strength of the heater 10 can be increased.

また、図５に示すように、第１部材１と第２部材３とがガラス材料４により接合されているとともに、第１部材１と第２部材３の外周面がガラス材料４で覆われていてもよい。これにより、ヒータ１０を被加熱物に突き刺したときに、ヒータ１０の表面に被加熱物が付着するおそれを低減することができる。その結果、被加熱物が付着した部位におけるヒータ１０の腐食を低減し、ヒータ１０が破損するおそれを低減することができる。その結果、ヒータ１０の耐久性を高めることができる。なお、ヒータ１０は、第１部材１の外周面の一部または全部と第２部材３の外周面の一部または全部とがガラス材料４で覆われていてもよい。また、ヒータ１０は、第１部材１の外周面の一部または全部がガラス材料４で覆われていて、第２部材３の外周面はガラス材料４で覆われていなくてもよく、第２部材３の外周面の一部または全部がガラス材料４で覆われていて、第１部材１の外周面はガラス材料４で覆われていなくてもよい。 Further, as shown in FIG. 5, the first member 1 and the second member 3 are joined with the glass material 4, and the outer peripheral surfaces of the first member 1 and the second member 3 are covered with the glass material 4. may Thereby, when the heater 10 is pierced into the object to be heated, the possibility that the object to be heated adheres to the surface of the heater 10 can be reduced. As a result, it is possible to reduce corrosion of the heater 10 at the portion to which the object to be heated adheres, and reduce the risk of the heater 10 being damaged. As a result, durability of the heater 10 can be enhanced. In the heater 10 , part or all of the outer peripheral surface of the first member 1 and part or all of the outer peripheral surface of the second member 3 may be covered with the glass material 4 . Further, in the heater 10, part or all of the outer peripheral surface of the first member 1 may be covered with the glass material 4, and the outer peripheral surface of the second member 3 may not be covered with the glass material 4. Part or all of the outer peripheral surface of the member 3 may be covered with the glass material 4 and the outer peripheral surface of the first member 1 may not be covered with the glass material 4 .

また、図６に示すように、第１部材１が端面に凸部１１を有し、第２部材３が端面に凹部３１を有するとともに、凸部１１が凹部３１に挿入されていてもよい。これにより、第１部材１が第２部材３に嵌めあわされるため、第１部材１から第２部材３が剥離するおそれを低減することができる。その結果、ヒータ１０の耐久性を高めることができる。 Further, as shown in FIG. 6 , the first member 1 may have a convex portion 11 on the end face, the second member 3 may have a concave portion 31 on the end face, and the convex portion 11 may be inserted into the concave portion 31 . Since the 1st member 1 is fitted by the 2nd member 3 by this, the possibility that the 2nd member 3 peels from the 1st member 1 can be reduced. As a result, durability of the heater 10 can be enhanced.

また、図７に示すように、第２部材３が端面に凸部３２を有し、第１部材１が端面に凹部１２を有するとともに、凸部３２が凹部１２に挿入されていてもよい。これにより、第２部材３が第１部材１に嵌めあわされるため、第１部材１から第２部材３が剥離するおそれを低減することができる。その結果、ヒータ１０の耐久性を高めることができる。 Further, as shown in FIG. 7 , the second member 3 may have a convex portion 32 on its end face, and the first member 1 may have a concave portion 12 on its end face, and the convex portion 32 may be inserted into the concave portion 12 . Thereby, since the second member 3 is fitted to the first member 1 , the risk of the second member 3 peeling off from the first member 1 can be reduced. As a result, durability of the heater 10 can be enhanced.

また、図８に示すように、第２部材３が端面に凹部３１を有するとともに、第１部材の端面を平坦面としてもよい。これにより、凹部３１内が空間となり、第１部材１から第２部材３への熱伝導性を低下させて、ヒータ１０の先端温度を下げることができる。 Further, as shown in FIG. 8, the second member 3 may have a concave portion 31 on the end surface, and the end surface of the first member may be a flat surface. As a result, the inside of the concave portion 31 becomes a space, the heat conductivity from the first member 1 to the second member 3 is lowered, and the tip temperature of the heater 10 can be lowered.

また、図９に示すように、第１部材１が端面に凹部１２を有するとともに、第２部材の端面を平坦面としてもよい。これにより、凹部１２内が空間となり、第１部材１から第２部材３への熱伝導性を低下させて、ヒータ１０の先端温度を下げることができる。 Further, as shown in FIG. 9, the first member 1 may have a concave portion 12 on its end surface, and the end surface of the second member may be a flat surface. As a result, the inside of the concave portion 12 becomes a space, the heat conductivity from the first member 1 to the second member 3 is lowered, and the tip temperature of the heater 10 can be lowered.

前述のように、第１部材１と第２部材３とをガラス材料４で接合する場合、凹部３１および凹部１２内にガラス材料４が入り込んでいてもよい。 As described above, when the first member 1 and the second member 3 are joined with the glass material 4 , the glass material 4 may enter the recesses 31 and 12 .

また、図１０に示すように、第１部材１が筒状であってもよい。これにより、ヒータ１０の熱容量を減らすことができる。そのため、被加熱物に熱を伝えやすくすることができる。その結果、被加熱物の加熱の速度を高めることができる。 Moreover, as shown in FIG. 10, the first member 1 may be cylindrical. Thereby, the heat capacity of the heater 10 can be reduced. Therefore, heat can be easily conducted to the object to be heated. As a result, the heating speed of the object to be heated can be increased.

また、図１１に示すように、第２部材３が端面に凸部３２を有するとともに、凸部３２が、筒状の第１部材１の内側に挿入されていてもよい。これにより、ヒータ１０の熱容量を減らしつつ、第１部材１と第２部材３との接合強度を高めることができる。 Further, as shown in FIG. 11 , the second member 3 may have a convex portion 32 on the end face, and the convex portion 32 may be inserted inside the cylindrical first member 1 . Thereby, the bonding strength between the first member 1 and the second member 3 can be increased while reducing the heat capacity of the heater 10 .

また、本開示の一例のタバコ用加熱具１００は、図１２に示すように、ヒータ１０と、ヒータ１０を保持するフランジ６とを備えている。これにより、タバコの吸い口近傍が過昇温するおそれを低減しつつ、タバコ用加熱具の耐久性を高めることができる。なお、図１２に示すタバコ用加熱具１００は、図１１に示したヒータ１０を備える構成であるが、本開示のタバコ用加熱具１００は、前述の図１～１０に示した、いずれのヒータ１０を備える構成であってもよい。 Further, the tobacco heating device 100 of one example of the present disclosure includes a heater 10 and a flange 6 that holds the heater 10 as shown in FIG. 12 . As a result, the durability of the heating device for tobacco can be enhanced while reducing the risk of excessive temperature rise in the vicinity of the mouthpiece of the tobacco. 12 is configured to include the heater 10 shown in FIG. 11, the tobacco heating device 100 of the present disclosure can be any heater shown in FIGS. 10 may be provided.

本開示は、その精神または主要な特徴から逸脱することなく、他のいろいろな形態で実施できる。したがって、前述の実施形態はあらゆる点で単なる例示に過ぎず、本発明の範囲は特許請求の範囲に示すものであって、明細書本文には何ら拘束されない。さらに、特許請求の範囲に属する変形や変更は全て本発明の範囲内のものである。 This disclosure can be embodied in various other forms without departing from its spirit or essential characteristics. Accordingly, the above-described embodiments are merely exemplary in all respects, and the scope of the present invention is indicated by the claims and is not to be construed in any way by the text of the specification. Furthermore, all modifications and changes within the scope of the claims are within the scope of the present invention.

１：第１部材
１１：凸部
１２：凹部
２：発熱抵抗体
３：第２部材
３１：凹部
３２：凸部
４：ガラス材料
５：引き出し部
６：フランジ
７：導線
１０：ヒータ
１００：タバコ用加熱具1: First member
11: Convex part 12: Concave part 2: Heating resistor 3: Second member 31: Concave part 32: Convex part 4: Glass material 5: Drawer part 6: Flange 7: Lead wire 10: Heater 100: Heating device for tobacco

Claims (9)

棒状の第１部材と、
該第１部材の内部または表面に位置する発熱抵抗体と、
前記第１部材の端面に接合されており前記第１部材よりも熱伝導率が低い第２部材とを有し、
前記第１部材がアルミナを有しており、前記第２部材がジルコニアを有していることを特徴とするヒータ。 a rod-shaped first member;
a heating resistor positioned inside or on the surface of the first member;
a second member that is joined to the end surface of the first member and has a lower thermal conductivity than the first member;
A heater, wherein said first member comprises alumina and said second member comprises zirconia . 前記第２部材が先端に向かって細くなる形状を有していることを特徴とする請求項１に記載のヒータ。 2. A heater according to claim 1, wherein said second member has a shape tapered toward its tip. 前記第１部材と前記第２部材とがガラス材料により接合され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。 3. The heater according to claim 1 , wherein said first member and said second member are joined with a glass material. 前記第１部材と前記第２部材とがガラス材料により接合されているとともに、前記第１部材と前記第２部材の外周面が前記ガラス材料で覆われていることを特徴とする請求項３に記載のヒータ。 4. The method according to claim 3 , wherein the first member and the second member are joined with a glass material, and outer peripheral surfaces of the first member and the second member are covered with the glass material. Heater as described. 記第１部材が端面に凸部を有し、前記第２部材が端面に凹部を有するとともに、前記凸部が前記凹部に挿入されていることを特徴とする請求項１乃至請求項４のいずれかに記載のヒータ。 5. Any one of claims 1 to 4 , wherein the first member has a projection on an end surface, and the second member has a recess on the end surface, and the projection is inserted into the recess. The heater as described in Crab. 前記第２部材が端面に凸部を有し、前記第１部材が端面に凹部を有するとともに、前記凸部が前記凹部に挿入されていることを特徴とする請求項１乃至請求項４のいずれかに記載のヒータ。 5. Any one of claims 1 to 4 , wherein said second member has a projection on its end face, said first member has a recess on its end face, and said projection is inserted into said recess. The heater as described in Crab. 前記第１部材が筒状であることを特徴とする請求項１乃至請求項６のいずれかに記載のヒータ。 7. The heater according to claim 1, wherein said first member is cylindrical. 前記第２部材が端面に凸部を有するとともに、前記凸部が前記第１部材の内側に挿入されていることを特徴とする請求項７に記載のヒータ。 8. The heater according to claim 7 , wherein said second member has a projection on its end face, and said projection is inserted inside said first member. 請求項１乃至請求項８のいずれかに記載のヒータと、該ヒータを保持するフランジとを備えたことを特徴とする加熱具。 A heating tool comprising: the heater according to any one of claims 1 to 8 ; and a flange for holding the heater.
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