JP2005204352A - Adhesive and securing method of permanent magnet to motor and permanent magnet motor - Google Patents

Adhesive and securing method of permanent magnet to motor and permanent magnet motor Download PDF

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JP2005204352A
JP2005204352A JP2004004918A JP2004004918A JP2005204352A JP 2005204352 A JP2005204352 A JP 2005204352A JP 2004004918 A JP2004004918 A JP 2004004918A JP 2004004918 A JP2004004918 A JP 2004004918A JP 2005204352 A JP2005204352 A JP 2005204352A
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adhesive
permanent magnet
motor
group
magnet
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Kazuhiro Ogawa
和宏 小川
Atsushi Ehira
淳 江平
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Nissan Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide adhesive exhibiting high thermal conductivity and filling properties and capable of enhancing cooling performance of a permanent magnet sharply. <P>SOLUTION: The adhesive 6 being used for securing the permanent magnet 5 of a motor 1 contains 10 pts.wt. of liquid resin 8 in the temperature range of 100°C from room temperature and including a polymerization group for 100 pts.wt. of monomer 7 including a mesogen group and a polymerization group in molecule wherein the extending direction of the mesogen group is substantially aligned with the direction of heat conduction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、永久磁石式モータに係り、特に、永久磁石を固定するのに好適な接着剤及び永久磁石の固定方法に関するものである。   The present invention relates to a permanent magnet type motor, and more particularly to an adhesive suitable for fixing a permanent magnet and a method for fixing the permanent magnet.

永久磁石式モータは、その出力が増すと、ステータに巻いたコイルの電流が増して発熱したり、永久磁石内の過電流によって発熱したりするが、この永久磁石の発熱に伴う温度上昇は、永久磁石の磁力が減じてしまうといった事態を招く恐れがあるため、モータの出力性能の維持ないし向上を実現し得る冷却技術の構築が望まれている。   When the output of the permanent magnet motor increases, the current of the coil wound around the stator increases and generates heat, or generates heat due to overcurrent in the permanent magnet. Since there is a possibility that the magnetic force of the permanent magnet is reduced, it is desired to construct a cooling technique capable of maintaining or improving the output performance of the motor.

「機械工学便覧」社団法人 日本機械学会 発行 昭和６３年５月１５日 Ａ８−４６〜Ａ８−５６“Mechanical Engineering Handbook”, published by the Japan Society of Mechanical Engineers, May 15, 1988 A8-46 to A8-56

ところが、従来の永久磁石式モータにおいて、永久磁石を固定するのに用いる接着剤は、熱伝導率が低いこと、充填性が悪いこと、といった欠点を有しており、磁石固定部と永久磁石との間の接着層が、発熱した永久磁石の断熱層として作用してしまうことから、永久磁石の冷却の妨げとなっている。   However, in the conventional permanent magnet type motor, the adhesive used to fix the permanent magnet has the disadvantages of low thermal conductivity and poor filling properties. Since the adhesive layer in between acts as a heat insulating layer for the generated permanent magnet, it prevents cooling of the permanent magnet.

そこで、熱伝導性フィラーを充填して、接着剤の熱伝導性及び充填性を高める試みがなされているが、熱伝導性フィラーを多く充填した場合には、接着剤の粘性が上昇して充填時に空気を巻き込んでしまい、一方、熱伝導性フィラーの充填量を少なく抑えた場合には、満足し得る熱伝導性を得ることができず、結果として、いずれの場合も、永久磁石の冷却性を高めることができないという問題があり、この問題を解決することが従来の課題となっていた。   Therefore, attempts have been made to increase the thermal conductivity and fillability of the adhesive by filling it with heat conductive filler. However, when a large amount of heat conductive filler is filled, the viscosity of the adhesive increases and fills. Sometimes air is entrained, while if the amount of thermally conductive filler is kept low, satisfactory thermal conductivity cannot be obtained, and as a result, in either case, the cooling performance of the permanent magnet It has been a conventional problem to solve this problem.

本発明は、上記した従来の課題に着目してなされたもので、熱伝導性及び充填性がいずれも高く、永久磁石の冷却性を大幅に高めることが可能な接着剤を提供することを目的としている。   The present invention has been made paying attention to the above-described conventional problems, and has as its object to provide an adhesive that has both high thermal conductivity and high filling properties, and can greatly enhance the cooling performance of permanent magnets. It is said.

本発明は、モータの永久磁石を固定するのに用いる接着剤であって、メソゲン基及び重合性基を分子中に含むモノマー１００重量部に対して、重合性基を含み室温から１００℃の範囲で液状の樹脂１０重量部を少なくとも含み、メソゲン基の延在方向を熱伝導方向に略一致させた構成としたことを特徴としており、この接着剤の構成を前述した従来の課題を解決するための手段としている。   The present invention is an adhesive used for fixing a permanent magnet of a motor, and includes a polymerizable group in a range from room temperature to 100 ° C. with respect to 100 parts by weight of a monomer containing a mesogenic group and a polymerizable group in the molecule. In order to solve the above-described conventional problems, the structure of the adhesive is characterized in that it includes at least 10 parts by weight of a liquid resin, and the extending direction of the mesogenic group substantially coincides with the heat conduction direction. As a means of.

また、本発明のモータに対する永久磁石の固定方法は、モータの磁石固定部に永久磁石を固定するに際して、上記接着剤を永久磁石とモータの磁石固定部との間に塗布した後、上記永久磁石に磁力を与える熱処理の段階で接着剤を熱硬化させて、これにより生じる接着力でモータの磁石固定部に永久磁石を固定する構成としている。   Further, in the fixing method of the permanent magnet to the motor of the present invention, when the permanent magnet is fixed to the magnet fixing portion of the motor, the adhesive is applied between the permanent magnet and the magnet fixing portion of the motor, and then the permanent magnet is fixed. The adhesive is heat-cured at the stage of heat treatment for applying a magnetic force to the magnet, and the permanent magnet is fixed to the magnet fixing portion of the motor by the adhesive force generated thereby.

さらに、本発明のモータにおいて、永久磁石が上記接着剤を用いて固定してある構成としている。   Furthermore, in the motor of the present invention, the permanent magnet is fixed using the adhesive.

本発明の接着剤において、メソゲン基とは、液晶性を発現する官能基を示す。具体的には、表１に示すように、ビフェニル，ターフェニル，フェニルベンゾエート，アゾベンゼン，スチルべンやその誘導体などが挙げられる。   In the adhesive of the present invention, the mesogenic group refers to a functional group that exhibits liquid crystallinity. Specifically, as shown in Table 1, biphenyl, terphenyl, phenylbenzoate, azobenzene, stilbene, and derivatives thereof can be mentioned.

Figure 2005204352
Figure 2005204352

通常、メソゲン基を含むモノマーは常温で固体であり、その取り扱いは困難であるが、室温から１００℃で液状の樹脂１０重量部を少なくとも含んでいることから、ペースト状又は液状となり、取り扱いが易しくなる。永久磁石は、高温で磁力が減じてしまうが、磁力の減り始め温度まで加熱溶融させることなく塗布することができる。   Usually, a monomer containing a mesogenic group is solid at room temperature and is difficult to handle, but since it contains at least 10 parts by weight of a liquid resin at room temperature to 100 ° C., it is pasty or liquid and easy to handle. Become. Although the magnetic force decreases at a high temperature, the permanent magnet can be applied without heating and melting until the magnetic force starts decreasing.

本発明の接着剤では、モノマー中に液晶性を発現するメソゲン基を有しているので、液晶状態では、図１に示すように、分子が高次構造を形成し、その結果、高分子材料の熱伝導媒体とされているフォノンによる熱伝導が促進されることとなる。   In the adhesive of the present invention, since the monomer has a mesogenic group that exhibits liquid crystallinity, in the liquid crystal state, as shown in FIG. 1, molecules form a higher order structure. Therefore, the heat conduction by the phonon, which is the heat conduction medium, is promoted.

一方、本発明のモータに対する永久磁石の固定方法において、接着剤が硬化する前に磁場を印加することで、図２に示すように、接着剤中のメソゲン基（７）の分子鎖を磁場方向に配向させることができ、磁場を印加しながら熱処理すれば、メソゲン基を上記のように配向した状態で固定化して、この配向状態を使用中も維持することが可能になる。   On the other hand, in the method of fixing the permanent magnet to the motor of the present invention, by applying a magnetic field before the adhesive is cured, as shown in FIG. 2, the molecular chain of the mesogenic group (7) in the adhesive is changed in the magnetic field direction. If the heat treatment is carried out while applying a magnetic field, the mesogenic group can be fixed in the oriented state as described above, and this oriented state can be maintained during use.

ここで、メソゲン基は、その分子鎖の軸方向の熱伝導率が高いことから、磁場方向、すなわち、ロータの径方向の熱伝導性が向上する。したがって、磁石の熱伝導方向と接着剤の熱伝導方向とが一致することから、磁石で発した熱をロータへ効率良く伝達可能となり、加えて、磁石に磁力を与える工程で印加する磁場を利用できるので、分子鎖の配向のための磁場印加工程を別個に設ける必要がなくなる。   Here, since the mesogenic group has high thermal conductivity in the axial direction of its molecular chain, the thermal conductivity in the magnetic field direction, that is, the radial direction of the rotor is improved. Therefore, since the heat conduction direction of the magnet and the heat conduction direction of the adhesive match, it is possible to efficiently transfer the heat generated by the magnet to the rotor, and in addition, the magnetic field applied in the process of applying magnetic force to the magnet is used. Therefore, it is not necessary to separately provide a magnetic field application step for molecular chain orientation.

本発明の接着剤によれば、上記した構成としているので、熱伝導を促進させることができ、したがって、永久磁石の冷却性能の大幅な向上を実現することが可能であるという非常に優れた効果がもたらされる。   According to the adhesive of the present invention, since it has the above-described configuration, it is possible to promote heat conduction, and thus it is possible to realize a significant improvement in the cooling performance of the permanent magnet. Is brought about.

本発明の接着剤において、モノマー及び液状の樹脂が重合性基としてエポキシ基を有する構成を採用することができ、この場合には、重合後の硬化物は熱的にも機械的にも安定し、磁石や磁石固定部をはじめとして様々な物に対して良好な接着力を得ることができる。   In the adhesive of the present invention, the monomer and the liquid resin can employ a structure having an epoxy group as a polymerizable group. In this case, the cured product after polymerization is thermally and mechanically stable. Good adhesive force can be obtained for various objects including magnets and magnet fixing parts.

また、本発明の接着剤において、モノマー及び液状の樹脂よりも熱伝導率の高いフィラーを有している構成としてもよく、このような構成を採用することで、磁石固定部と永久磁石との間の接着層の熱伝導効率を高めることが可能となる。   Further, the adhesive of the present invention may have a configuration having a filler having a higher thermal conductivity than that of the monomer and the liquid resin, and by adopting such a configuration, the magnet fixing portion and the permanent magnet It becomes possible to increase the heat conduction efficiency of the adhesive layer in between.

さらに、本発明の接着剤において、フィラーが絶縁性を有している構成とすることもでき、この場合には、接着層に渦電流発生に伴う発熱が起こらない。ここで、絶縁性フィラーとしては、絶縁性及び熱伝導性の観点から、例えば、アルミナ、シリカ、酸化マグネシウム、酸化ベリリウム、窒化アルミ、窒化ホウ素、窒化けい素、炭化けい素、ダイヤモンド等を使用することができる。   Furthermore, in the adhesive of the present invention, the filler may have an insulating property. In this case, heat generation due to eddy current generation does not occur in the adhesive layer. Here, from the viewpoint of insulation and thermal conductivity, for example, alumina, silica, magnesium oxide, beryllium oxide, aluminum nitride, boron nitride, silicon nitride, silicon carbide, diamond, etc. are used as the insulating filler. be able to.

一方、本発明のモータに対する永久磁石の固定方法において、接着剤が硬化する温度を永久磁石の磁力が減じる温度よりも低く設定することができ、このような構成を採用することで、永久磁石の磁力が減じるのを回避することが可能である。   On the other hand, in the fixing method of the permanent magnet to the motor of the present invention, the temperature at which the adhesive is cured can be set lower than the temperature at which the magnetic force of the permanent magnet is reduced. It is possible to avoid a decrease in magnetic force.

そして、本発明のモータでは、永久磁石を上記接着剤を用いて固定するように成すことで、発熱した永久磁石の熱伝導性を高めて温度の上昇を少なく抑え得ることとなり、その結果、出力の向上が図られることとなる。   In the motor of the present invention, the permanent magnet is fixed using the adhesive, so that the heat conductivity of the generated permanent magnet can be increased and the temperature rise can be suppressed to a low level. Will be improved.

以下、本発明を図面に基づいて説明する。   Hereinafter, the present invention will be described with reference to the drawings.

［実施例１］
図３及び図４は本発明の一実施例を示している。 [Example 1]
3 and 4 show an embodiment of the present invention.

図３に示すように、この永久磁石式モータ１は、ステータコア２と、ロータ３と、シャフト４を備えており、ロータ３に設けた軸方向に貫通する磁石用孔（モータの磁石固定部）３ａには、永久磁石５が接着剤６を介して固定してある。   As shown in FIG. 3, the permanent magnet type motor 1 includes a stator core 2, a rotor 3, and a shaft 4, and a magnet hole (magnet fixing portion of the motor) penetrating in the axial direction provided in the rotor 3. A permanent magnet 5 is fixed to 3 a via an adhesive 6.

上記接着剤６は、図４に示すように、メソゲン基を含むモノマー７と１００℃で液状の樹脂８とで主として構成してあって、その配合比は、モノマー１００重量部に対して樹脂１０重量部としてある。そして、この実施例では絶縁フィラー９が配合してあり、モノマー７及び液状の樹脂８は重合性基としてエポキシ基を有している。   As shown in FIG. 4, the adhesive 6 is mainly composed of a monomer 7 containing a mesogenic group and a resin 8 that is liquid at 100 ° C., and the blending ratio is 10 parts by weight of resin 10 with respect to 100 parts by weight of the monomer. As parts by weight. In this embodiment, an insulating filler 9 is blended, and the monomer 7 and the liquid resin 8 have an epoxy group as a polymerizable group.

上記ロータ３の磁石用孔３ａに永久磁石５を固定するに際しては、接着剤６をロータ３の磁石用孔３ａと永久磁石５との間に塗布した後、永久磁石５に磁力を与える熱処理の段階で接着剤６を熱硬化させて、これにより生じる接着力でロータ３の磁石用孔３ａに永久磁石５を固定するようにしている。   When fixing the permanent magnet 5 in the magnet hole 3 a of the rotor 3, after applying the adhesive 6 between the magnet hole 3 a of the rotor 3 and the permanent magnet 5, heat treatment for applying a magnetic force to the permanent magnet 5 is performed. The adhesive 6 is thermally cured at the stage, and the permanent magnet 5 is fixed to the magnet hole 3a of the rotor 3 by the adhesive force generated thereby.

この場合、接着剤６を熱硬化させる前に磁場を印加することにより、メソゲン基を一方向に規則的に配向させている、すなわち、メソゲン基の延在方向を熱伝導方向に略一致させている。   In this case, by applying a magnetic field before the adhesive 6 is heat-cured, the mesogenic groups are regularly aligned in one direction, that is, the extending direction of the mesogenic groups is made substantially coincident with the heat conduction direction. Yes.

上記接着剤６の樹脂８はその配向方向の熱伝導性が良いので、発熱した永久磁石の５の熱をロータ３に効率良く伝達可能であり、また、モノマー７及び液状の樹脂８が重合性基としてエポキシ基を有していることから、熱的にも機械的にも安定した接着性が得られる。なお、図４では、絶縁フィラー９の粒子径が均一な場合を示しているが、絶縁フィラー９の粒子径が互いに異なっていても何ら支障はない。   Since the resin 8 of the adhesive 6 has good heat conductivity in the orientation direction, the heat of the generated permanent magnet 5 can be efficiently transferred to the rotor 3, and the monomer 7 and the liquid resin 8 are polymerizable. Since it has an epoxy group as a group, stable adhesiveness can be obtained both thermally and mechanically. 4 shows a case where the particle diameter of the insulating filler 9 is uniform, there is no problem even if the particle diameters of the insulating filler 9 are different from each other.

［実施例２］
図５は本発明の他の実施例を示しており、この実施例では、磁場を印加せずに接着剤２６を熱硬化させるようにしていて、他の構成は先の実施例と同じである。 [Example 2]
FIG. 5 shows another embodiment of the present invention. In this embodiment, the adhesive 26 is thermally cured without applying a magnetic field, and other configurations are the same as those of the previous embodiment. .

上記したように、磁場を印加せずに接着剤２６を熱硬化させているので、図５に示すように、メソゲン基を含んだモノマー７を一方向に規則的に配向させているとは言えないが、メソゲン基を含んだモノマー７は、磁場を印加しなくても自己配向する特性を有していることから、上記接着剤２６は、メソゲン基を含まないモノマーからなる接着剤と比較して熱伝導性に優れている。   As described above, since the adhesive 26 is thermally cured without applying a magnetic field, it can be said that the monomer 7 containing a mesogenic group is regularly oriented in one direction as shown in FIG. However, since the monomer 7 containing a mesogenic group has a property of self-orientation without applying a magnetic field, the adhesive 26 is compared with an adhesive made of a monomer containing no mesogenic group. Excellent heat conductivity.

［実施例３］
図６は本発明のさらに他の実施例を示しており、この実施例では、接着剤３６が絶縁フィラー９を含まない場合を示していて、他の構成は実施例１と同じである。 [Example 3]
FIG. 6 shows still another embodiment of the present invention. In this embodiment, the adhesive 36 does not include the insulating filler 9, and the other configuration is the same as that of the first embodiment.

この実施例において、接着剤３６を熱硬化させる前に磁場を印加することにより、メソゲン基を一方向に規則的に配向させている、すなわち、メソゲン基の延在方向を熱伝導方向に略一致させているので、発熱した永久磁石の５の熱をロータ３に効率良く伝達可能であり、また、上記接着剤３６は、メソゲン基を含まないモノマーからなる接着剤と比較して熱伝導性に優れている。   In this embodiment, by applying a magnetic field before the adhesive 36 is thermally cured, the mesogenic groups are regularly oriented in one direction, that is, the extending direction of the mesogenic groups substantially coincides with the heat conduction direction. Therefore, the heat of the generated permanent magnet 5 can be efficiently transferred to the rotor 3, and the adhesive 36 is more thermally conductive than an adhesive made of a monomer containing no mesogenic group. Are better.

［実施例４］
図７は本発明のさらに他の実施例を示しており、この実施例では、接着剤４６をメソゲン基を含むモノマー４７と１００℃で液状の樹脂４８とから主として構成している。この接着剤４６のモノマー４７は、アクリル酸エステルや、メタクリル酸エステル等のアクリル系の重合性基を有しており、他の構成は実施例１と同じである。 [Example 4]
FIG. 7 shows still another embodiment of the present invention. In this embodiment, the adhesive 46 is mainly composed of a monomer 47 containing a mesogenic group and a resin 48 which is liquid at 100.degree. The monomer 47 of the adhesive 46 has an acrylic polymerizable group such as an acrylic ester or a methacrylic ester, and other configurations are the same as those in the first embodiment.

この実施例において、実施例１のエポキシ基を含むモノマー７から得られるエポキシ樹脂よりも耐熱性や耐湿性等の性能が劣ることから、モータの使用環境によってクラックＣが生じる可能性がないとは言えないものの、上記接着剤４６も、メソゲン基を含まないモノマーからなる接着剤と比較して熱伝導性に優れている。   In this example, since the performance such as heat resistance and moisture resistance is inferior to the epoxy resin obtained from the monomer 7 containing the epoxy group of Example 1, there is no possibility that the crack C may occur depending on the use environment of the motor. Although it cannot be said, the adhesive 46 is also excellent in thermal conductivity as compared with an adhesive made of a monomer not containing a mesogenic group.

［実施例５］
図８は本発明のさらに他の実施例を示しており、この実施例では、接着剤５６が導電性のフィラー５９を配合している場合を示していて、他の構成は実施例１と同じである。 [Example 5]
FIG. 8 shows still another embodiment of the present invention. In this embodiment, the adhesive 56 contains a conductive filler 59, and other configurations are the same as those of the first embodiment. It is.

この実施例において、接着剤５６のフィラー５９が導電性を有していることから、この接着剤５６の層に渦電流発生に伴う発熱が生じる可能性がないとは言えないものの、上記接着剤５６も、メソゲン基を含まないモノマーからなる接着剤と比較して熱伝導性に優れている。   In this embodiment, since the filler 59 of the adhesive 56 has conductivity, it cannot be said that there is no possibility of heat generation due to eddy current generation in the layer of the adhesive 56, but the adhesive 56 is also excellent in thermal conductivity as compared with an adhesive made of a monomer containing no mesogenic group.

［比較例１］
図９は比較例を示しており、この比較例の接着剤９６は、メソゲン基を含まない樹脂９８と熱伝導性のフィラー９９とから主として構成してある。 [Comparative Example 1]
FIG. 9 shows a comparative example. The adhesive 96 of this comparative example is mainly composed of a resin 98 not containing a mesogenic group and a thermally conductive filler 99.

この比較例において、熱伝導性の向上を図って、熱伝導性フィラー９９を高充填するようにしたため、接着剤９６の粘度が高くなって、接着剤充填時に空気Ａを巻き込んでしまい、その結果、上記した実施例１〜５の接着剤と比較して冷却性能が劣ってしまう。   In this comparative example, since the thermal conductivity was improved and the thermal conductive filler 99 was highly filled, the viscosity of the adhesive 96 was increased and air A was entrained when the adhesive was filled. The cooling performance is inferior as compared with the adhesives of Examples 1 to 5 described above.

［比較例２］
図１０は他の比較例を示しており、この比較例の接着剤１０６は、メソゲン基を含まない樹脂１０８から主として構成してある。 [Comparative Example 2]
FIG. 10 shows another comparative example. The adhesive 106 of this comparative example is mainly composed of a resin 108 that does not contain a mesogenic group.

この比較例において、フィラーを省いた分だけ充填性を高めることで、冷却性能の向上を図っているが、接着剤１０６の熱伝導性が低くなり、その結果、上記した実施例１〜５の接着剤と比較して冷却性能が劣ってしまう。   In this comparative example, the cooling performance is improved by increasing the filling property by the amount of the filler omitted, but the thermal conductivity of the adhesive 106 is lowered, and as a result, the above-described Examples 1 to 5 Cooling performance will be inferior compared with an adhesive.

［比較例３］
図１１はさらに他の比較例を示しており、この比較例の接着剤１１６は、メソゲン基を含むモノマー７と１００℃で液状の樹脂８とで主として構成してあるが、その配合比をモノマー１００重量部に対して樹脂１０重量部以下としている。 [Comparative Example 3]
FIG. 11 shows still another comparative example. The adhesive 116 of this comparative example is mainly composed of a monomer 7 containing a mesogenic group and a resin 8 which is liquid at 100 ° C. The amount of resin is 10 parts by weight or less with respect to 100 parts by weight.

この比較例において、液状樹脂の配合比が少ないため、接着剤１１６を充填する際には、永久磁石５の減磁開始温度以上に加熱して溶融させる必要があり、したがって、モータの出力性能が低下してしまう。   In this comparative example, since the blending ratio of the liquid resin is small, when filling the adhesive 116, it is necessary to heat and melt the permanent magnet 5 to a temperature higher than the demagnetization start temperature of the permanent magnet 5. It will decline.

上記した実施例において、ロータ３に４つの磁石用孔３ａを形成して、これらの磁石用孔３ａに永久磁石５をそれぞれ配置するようにしているが、永久磁石５の形状や個数はこれに限定されるものではなく、磁気設計に基づいて、適宜形状の永久磁石５を必要数配置することができる。   In the embodiment described above, four magnet holes 3a are formed in the rotor 3, and the permanent magnets 5 are respectively disposed in these magnet holes 3a. The present invention is not limited, and a necessary number of appropriately shaped permanent magnets 5 can be arranged based on the magnetic design.

本発明の接着剤に用いる液晶高分子を説明する図である。It is a figure explaining the liquid crystal polymer used for the adhesive agent of this invention. 本発明の接着剤中のメソゲン基の延在方向が磁場方向に配向される状況を説明する図である。It is a figure explaining the condition where the extending direction of the mesogen group in the adhesive agent of this invention is orientated in a magnetic field direction. 本発明の一実施例による接着剤を用いたモータの軸方向と直交する方向の断面説明図である。（実施例１）It is sectional explanatory drawing of the direction orthogonal to the axial direction of the motor using the adhesive agent by one Example of this invention. (Example 1) 図３に示したモータの軸方向に沿う方向の部分拡大断面説明図である。（実施例１）FIG. 4 is a partially enlarged cross-sectional explanatory view in a direction along the axial direction of the motor shown in FIG. 3. (Example 1) 本発明の他の実施例による接着剤を用いたモータの軸方向に沿う方向の部分拡大断面説明図である。（実施例２）It is a partial expanded sectional view of the direction along the axial direction of the motor using the adhesive agent by the other Example of this invention. (Example 2) 本発明のさらに他の実施例による接着剤を用いたモータの軸方向に沿う方向の部分拡大断面説明図である。（実施例３）It is a partial expanded sectional view of the direction in alignment with the axial direction of the motor using the adhesive agent by further another Example of this invention. Example 3 本発明のさらに他の実施例による接着剤を用いたモータの軸方向に沿う方向の部分拡大断面説明図である。（実施例４）It is a partial expanded sectional view of the direction in alignment with the axial direction of the motor using the adhesive agent by further another Example of this invention. (Example 4) 本発明のさらに他の実施例による接着剤を用いたモータの軸方向に沿う方向の部分拡大断面説明図である。（実施例５）It is a partial expanded sectional view of the direction in alignment with the axial direction of the motor using the adhesive agent by further another Example of this invention. (Example 5) 比較例による接着剤を用いたモータの軸方向に沿う方向の部分拡大断面説明図である。（比較例１）It is a partial expanded sectional explanatory view of the direction in alignment with the axial direction of the motor using the adhesive agent by a comparative example. (Comparative Example 1) 他の比較例による接着剤を用いたモータの軸方向に沿う方向の部分拡大断面説明図である。（比較例２）It is a partial expanded sectional explanatory view of the direction in alignment with the axial direction of the motor using the adhesive agent by another comparative example. (Comparative Example 2) さらに他の比較例による接着剤を用いたモータの軸方向に沿う方向の部分拡大断面説明図である。（比較例３）Furthermore, it is a partial expanded sectional explanatory view of the direction in alignment with the axial direction of the motor using the adhesive agent by another comparative example. (Comparative Example 3)

符号の説明Explanation of symbols

１ 永久磁石式モータ
３ａ 磁石用孔（モータの磁石固定部）
５ 永久磁石
６，２６，３６，４６，５６ 接着剤
７ メソゲン基及びエポキシ基を含むモノマー
８，４８ 液状の樹脂
９，５９ フィラー 1 Permanent magnet type motor 3a Magnet hole (Motor fixing part of motor)
5 Permanent magnet 6, 26, 36, 46, 56 Adhesive 7 Monomer containing mesogenic group and epoxy group 8, 48 Liquid resin 9, 59 Filler

Claims (7)

モータの永久磁石を固定するのに用いる接着剤であって、メソゲン基及び重合性基を分子中に含むモノマー１００重量部に対して、重合性基を含み室温から１００℃の範囲で液状の樹脂１０重量部を少なくとも含み、メソゲン基の延在方向を熱伝導方向に略一致させたことを特徴とする接着剤。   An adhesive used for fixing a permanent magnet of a motor, which is a resin containing a polymerizable group and in a liquid temperature range from room temperature to 100 ° C. with respect to 100 parts by weight of a monomer containing a mesogenic group and a polymerizable group in the molecule. An adhesive comprising at least 10 parts by weight, wherein the extending direction of the mesogen group is substantially matched to the heat conduction direction. モノマー及び液状の樹脂が重合性基としてエポキシ基を有する請求項１に記載の接着剤。   The adhesive according to claim 1, wherein the monomer and the liquid resin have an epoxy group as a polymerizable group. モノマー及び液状の樹脂よりも熱伝導率の高いフィラーを有している請求項１又は２に記載の接着剤。   The adhesive according to claim 1 or 2, comprising a filler having a higher thermal conductivity than that of the monomer and the liquid resin. フィラーが絶縁性を有している請求項３に記載の接着剤。   The adhesive according to claim 3, wherein the filler has an insulating property. モータの磁石固定部に永久磁石を固定するに際して、請求項１〜４のいずれかに記載の接着剤を永久磁石とモータの磁石固定部との間に塗布した後、上記永久磁石に磁力を与える熱処理の段階で接着剤を熱硬化させて、これにより生じる接着力でモータの磁石固定部に永久磁石を固定することを特徴とするモータに対する永久磁石の固定方法。   When fixing a permanent magnet to the magnet fixing part of a motor, after apply | coating the adhesive agent in any one of Claims 1-4 between a permanent magnet and the magnet fixing part of a motor, a magnetic force is given to the said permanent magnet. A method for fixing a permanent magnet to a motor, wherein the adhesive is heat-cured at the stage of heat treatment, and the permanent magnet is fixed to the magnet fixing portion of the motor by an adhesive force generated thereby. 接着剤の熱硬化温度を永久磁石の磁力が減じる温度よりも低く設定する請求項５に記載のモータに対する永久磁石の固定方法。   The method for fixing a permanent magnet to a motor according to claim 5, wherein the thermosetting temperature of the adhesive is set lower than the temperature at which the magnetic force of the permanent magnet is reduced. 永久磁石が請求項１〜４のいずれかに記載の接着剤を用いて固定してあることを特徴とする永久磁石式モータ。   A permanent magnet motor, wherein the permanent magnet is fixed using the adhesive according to any one of claims 1 to 4.
JP2004004918A 2004-01-13 2004-01-13 Adhesive and securing method of permanent magnet to motor and permanent magnet motor Withdrawn JP2005204352A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007124818A (en) * 2005-10-28 2007-05-17 Asmo Co Ltd Motor control circuit device and motor equipped therewith
JP2009532557A (en) * 2006-04-03 2009-09-10 シーメンス エナジー インコーポレイテッド Seeding resin to improve the crystallinity of polymer base structure
KR101323522B1 (en) * 2006-08-14 2013-10-29 브로제 파르초이크타일레 게엠베하 운트 코. 카게, 뷔르츠부르크 Rotor for an electric motor
JP2013249355A (en) * 2012-05-31 2013-12-12 Hitachi Omron Terminal Solutions Corp Easily peelable adhesive, adhesive material using the same, and processing device
US11435092B2 (en) 2017-12-07 2022-09-06 Mitsubishi Electric Corporation Rotor, electric motor, compressor, air conditioner, and manufacturing method of rotor
JP7501225B2 (en) 2020-08-21 2024-06-18 株式会社レゾナック Composition containing (meth)acrylate having a mesogenic skeleton

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007124818A (en) * 2005-10-28 2007-05-17 Asmo Co Ltd Motor control circuit device and motor equipped therewith
JP2009532557A (en) * 2006-04-03 2009-09-10 シーメンス エナジー インコーポレイテッド Seeding resin to improve the crystallinity of polymer base structure
KR101323522B1 (en) * 2006-08-14 2013-10-29 브로제 파르초이크타일레 게엠베하 운트 코. 카게, 뷔르츠부르크 Rotor for an electric motor
JP2013249355A (en) * 2012-05-31 2013-12-12 Hitachi Omron Terminal Solutions Corp Easily peelable adhesive, adhesive material using the same, and processing device
US11435092B2 (en) 2017-12-07 2022-09-06 Mitsubishi Electric Corporation Rotor, electric motor, compressor, air conditioner, and manufacturing method of rotor
JP7501225B2 (en) 2020-08-21 2024-06-18 株式会社レゾナック Composition containing (meth)acrylate having a mesogenic skeleton

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