JP2008086110A - Motor - Google Patents

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JP2008086110A
JP2008086110A JP2006262218A JP2006262218A JP2008086110A JP 2008086110 A JP2008086110 A JP 2008086110A JP 2006262218 A JP2006262218 A JP 2006262218A JP 2006262218 A JP2006262218 A JP 2006262218A JP 2008086110 A JP2008086110 A JP 2008086110A
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motor
case
gear case
opening
motor case
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JP4938398B2 (en
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Kenichi Niki
健一 仁木
Toshihiro Negishi
利広 根岸
Yusuke Oda
裕介 小田
Tomohide Kogori
智英 古郡
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Mitsuba Corp
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Mitsuba Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor that can be reduced in the overall length. <P>SOLUTION: In the motor 10 including a bottomed cylindrical yoke 11 and a gear case 13, housing a speed reduction mechanism and is constructed by fastening and fixing the yoke 11 and the gear case 13 together, in the opening of the yoke 11, flange portions 12 are bent and formed via slits 11d extended from the open end 11b toward the bottom portion 11c; an engaging recess 15, receding from the fastening portion 14, is formed in the opening of the gear case 13; The open end 11b of the yoke 11 is fit into and engaged with the engaging recess 15, and the yoke 11 and the gear case 13 are fastened and fixed together via bolts 16 and nuts 17; and further, a brush holder 24 is housed in the yoke 11, positioned at the engaging recess 15 of the gear case 13. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、アーマチュアを収納したモータケースと減速機構を収納したギヤケースとを結合して成る減速機構付モータ等のモータに関する。   The present invention relates to a motor such as a motor with a speed reduction mechanism formed by combining a motor case housing an armature and a gear case housing a speed reduction mechanism.

この種のモータとして、図５に示すものがある（例えば、特許文献１参照。）。   An example of this type of motor is shown in FIG. 5 (see, for example, Patent Document 1).

このモータ１は、図５に示すように、有底筒状のヨーク（モータケース）２と、このヨーク２の開口部２ａに結合されるギヤケース４とを備えている。   As shown in FIG. 5, the motor 1 includes a bottomed cylindrical yoke (motor case) 2 and a gear case 4 coupled to the opening 2 a of the yoke 2.

ヨーク２の開口部２ａの開口端２ｂには径方向の外側に延びる複数のフランジ部３を折り曲げ形成してある。この各フランジ部３にはボルト６のねじを形成したシャンク部６ａを挿通させる挿通孔３ａを形成してある。また、ギヤケース４の開口部４ａにはナット７を係止する締結部５を形成してある。   A plurality of flange portions 3 extending outward in the radial direction are formed at the opening end 2b of the opening 2a of the yoke 2 by bending. Each flange portion 3 is formed with an insertion hole 3a through which a shank portion 6a in which a screw of a bolt 6 is formed is inserted. Further, a fastening portion 5 for locking the nut 7 is formed in the opening 4 a of the gear case 4.

そして、ヨーク２のフランジ部３の挿通孔３ａよりボルト６のシャンク部６ａを挿通して、ギヤケース４の締結部５に係止されたナット７に該ボルト６のシャンク部６ａを螺合することにより、ヨーク２とギヤケース４とが互いの開口部２ａ，４ａを合わせた状態で締結固定されるようになっている。尚、符号８はアーマチュア軸８ａを有したアーマチュアであり、符号９はブラシ９ａを有したブラシホルダである。   Then, the shank portion 6 a of the bolt 6 is inserted through the insertion hole 3 a of the flange portion 3 of the yoke 2, and the shank portion 6 a of the bolt 6 is screwed into the nut 7 locked to the fastening portion 5 of the gear case 4. Thus, the yoke 2 and the gear case 4 are fastened and fixed in a state where the openings 2a and 4a are aligned. Reference numeral 8 denotes an armature having an armature shaft 8a, and reference numeral 9 denotes a brush holder having a brush 9a.

特開２００５−１６０１９５号公報JP 2005-160195 A

しかしながら、前記従来のモータ１では、ヨーク２の開口部２ａの開口端２ｂにフランジ部３を設け、ギヤケース４の開口部４ａにヨーク２の開口部２ａを合わせて結合していたので、モータ１の全長が長くなっていた。   However, in the conventional motor 1, the flange portion 3 is provided at the opening end 2 b of the opening 2 a of the yoke 2, and the opening 2 a of the yoke 2 is combined with the opening 4 a of the gear case 4. The total length of was long.

そこで、本発明は、前記した課題を解決すべくなされたものであり、全長を短くすることができると共に、レイアウト性を向上させることができるモータを提供することを目的とする。   Accordingly, the present invention has been made to solve the above-described problems, and an object thereof is to provide a motor that can shorten the overall length and improve the layout.

請求項１の発明は、金属製で有底筒状のモータケースと、減速機構が収納される樹脂製のギヤケースとを備え、前記モータケースの内周面に配置された一対のマグネットと、前記モータケースに設けられた軸受と前記ギヤケースに設けられた軸受とでアーマチュア軸を回転自在に支持し、前記アーマチュア軸の一対のマグネットに対向する位置にアーマチュアを取り付け、前記アーマチュア軸にコンミュテータを固定し、前記コンミュテータに押圧するブラシを保持するブラシホルダとを備えたモータにおいて、前記モータケースの開口部に径方向外側に延びるフランジ部を形成すると共に、該フランジ部にねじ部を挿通させる挿通孔を形成する一方、前記ギヤケースの開口部に前記ねじ部材を締結する締結部を形成し、前記フランジ部の挿通孔より前記ねじ部材を挿通すると共に該ねじ部材のねじ部を前記締結部に螺合し、前記ギヤケースの開口部に前記締結部より後退する係合凹部を形成し、この係合凹部内に前記モータケースの開口端を係合して前記モータケースと前記ギヤケースとを前記ねじ部材を介して締結固定すると共に、前記ギヤケースの係合凹部に位置する前記モータケース内にブラシホルダを収納するようにしたことを特徴とする。   The invention of claim 1 includes a metal bottomed cylindrical motor case and a resin gear case in which a speed reduction mechanism is housed, and a pair of magnets disposed on an inner peripheral surface of the motor case, A bearing provided on the motor case and a bearing provided on the gear case rotatably support the armature shaft, attach the armature to a position facing the pair of magnets of the armature shaft, and fix the commutator to the armature shaft. In the motor comprising a brush holder for holding a brush that presses against the commutator, a flange portion extending radially outward is formed in the opening of the motor case, and an insertion hole for inserting a screw portion into the flange portion is formed. On the other hand, a fastening portion for fastening the screw member is formed in the opening of the gear case, and the flange portion is inserted. The screw member is inserted through the hole, and the threaded portion of the screw member is screwed into the fastening portion, and an engagement recess that retreats from the fastening portion is formed in the opening of the gear case. The motor case and the gear case are fastened and fixed via the screw member by engaging the open end of the motor case, and the brush holder is housed in the motor case located in the engagement recess of the gear case. It is characterized by that.

請求項２の発明は、金属製で有底筒状のモータケースと、このモータケースの開口部に結合され減速機構が収納される樹脂製のギヤケースとを備え、前記モータケースの内周面に配置された一対のマグネットと、前記モータケースに設けられた軸受と前記ギヤケースに設けられた軸受とでアーマチュア軸を回転自在に支持し、前記アーマチュア軸の一対のマグネットに対向する位置にアーマチュアを取り付け、前記アーマチュア軸にコンミュテータを固定し、前記コンミュテータに押圧するブラシを保持するブラシホルダとを備えたモータにおいて、前記モータケースの開口部に該開口部の開口端から底部側に延びる一対のスリットを介して径方向外側に延びるフランジ部を折り曲げ形成し、該フランジ部にボルトのシャンク部を挿通させる挿通孔を形成し、前記ギヤケースの開口部にナットを係止する締結部を形成し、前記フランジ部の挿通孔より前記ボルトのシャンク部を挿通して前記締結部のナットに該ボルトのシャンク部を螺合して前記モータケースと前記ギヤケースとを締結固定するようにし、前記ギヤケースの開口部に前記締結部より後退する係合凹部を形成し、この係合凹部内に前記モータケースの開口端を係合して前記モータケースと前記ギヤケースとを前記ボルトと前記ナットを介して締結固定すると共に、前記ギヤケースの係合凹部に位置する前記モータケース内にブラシホルダを収納するようにしたことを特徴とする。   According to a second aspect of the present invention, there is provided a bottomed cylindrical motor case made of metal and a resin gear case which is coupled to an opening of the motor case and accommodates a reduction mechanism, and is provided on an inner peripheral surface of the motor case. The armature shaft is rotatably supported by a pair of arranged magnets, a bearing provided on the motor case and a bearing provided on the gear case, and the armature is attached to a position facing the pair of magnets on the armature shaft. A motor including a brush holder that holds a brush that presses against the commutator and that fixes a commutator to the armature shaft, and a pair of slits extending from the opening end of the opening to the bottom side of the motor case. The flange portion extending radially outward is bent and the shank portion of the bolt is inserted through the flange portion. A through hole is formed, a fastening portion for locking the nut is formed in the opening of the gear case, the shank portion of the bolt is inserted into the nut of the fastening portion by inserting the shank portion of the bolt through the insertion hole of the flange portion. The motor case and the gear case are fastened and fixed to each other, and an engagement recess that retreats from the fastening portion is formed in the opening of the gear case, and the opening end of the motor case is formed in the engagement recess. The motor case and the gear case are fastened and fixed via the bolt and the nut, and the brush holder is housed in the motor case located in the engagement recess of the gear case. Features.

以上説明したように、請求項１及び請求項２の発明によれば、モータケースの開口部の開口端から離れた位置にフランジ部を形成すると共に、ギヤケースの開口部の締結部より後退した位置に係合凹部を形成し、この係合凹部内にモータケースの開口端を係合してモータケースとギヤケースとをフランジ部を介して締結固定すると共に、ギヤケースの係合凹部に位置するモータケース内にブラシホルダを収納するようにしたことにより、ギヤケースの開口部の係合凹部内にモータケースの開口端を係合して収納した長さ分、モータの全長を短くすることができる。これにより、モータの組み付け時にそのレイアウト性を向上させることができる。   As described above, according to the first and second aspects of the invention, the flange portion is formed at a position away from the opening end of the opening portion of the motor case, and the position retracted from the fastening portion of the opening portion of the gear case. An engagement recess is formed on the motor case, and the motor case and the gear case are fastened and fixed via the flange portion by engaging the opening end of the motor case in the engagement recess, and the motor case located in the engagement recess of the gear case Since the brush holder is housed inside, the entire length of the motor can be shortened by the length accommodated by engaging the opening end of the motor case in the engaging recess of the opening of the gear case. Thereby, the layout property can be improved when the motor is assembled.

また、ギヤケースの係合凹部内に位置するモータケース内にブラシホルダを収納したことにより、モータケースはギヤケースより比重が大きいためモータの作動音を低減することができる。   Further, since the brush case is housed in the motor case located in the engagement recess of the gear case, the motor case has a higher specific gravity than the gear case, so that the operation noise of the motor can be reduced.

以下、本発明の一実施形態を図面に基づいて説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

図１は本発明の一実施形態のモータを示す底面図、図２は同モータの断面図、図３は同モータに用いられるギヤケースにモータケースを組み付ける前の状態を示す斜視図、図４（ａ）は同モータケースの開口端にフランジ部を折り曲げ成形する前の状態を示す部分平面図、図４（ｂ）は同折り曲げ成形後のフランジ部の平面図、図４（ｃ）は同折り曲げ成形後のフランジ部の断面図である。   1 is a bottom view showing a motor according to an embodiment of the present invention, FIG. 2 is a sectional view of the motor, FIG. 3 is a perspective view showing a state before the motor case is assembled to a gear case used in the motor, and FIG. FIG. 4A is a partial plan view showing a state before the flange portion is bent at the opening end of the motor case, FIG. 4B is a plan view of the flange portion after the bending, and FIG. It is sectional drawing of the flange part after shaping | molding.

図１，図２に示すように、モータ１０は、略有底扁平円筒状のヨーク（モータケース）１１と、このヨーク１１の開口部１１ａに結合されるギヤケース１３とを備えている。   As shown in FIGS. 1 and 2, the motor 10 includes a substantially bottomed flat cylindrical yoke (motor case) 11 and a gear case 13 coupled to the opening 11 a of the yoke 11.

図３に示すように、ヨーク１１の開口部１１ａには径方向の外側に延びる複数のフランジ部１２を切り起こし形成してある。即ち、図４（ａ），（ｂ），（ｃ）に示すように、ヨーク１１の開口部１１ａには該開口部１１ａの開口端１１ｂから有底筒部（底部）１１ｃ側に延びる一対のスリット（切欠部）１１ｄ，１１ｄを介して複数（この実施形態では２ケ所）のフランジ部１２を折り曲げ形成してある。また、各フランジ部１２にはボルト（ねじ部材）１６のねじを形成したシャンク部１６ａを挿通させる円形の挿通孔１２ａを形成してある。   As shown in FIG. 3, a plurality of flange portions 12 extending radially outward are cut and raised in the opening portion 11 a of the yoke 11. That is, as shown in FIGS. 4A, 4B, and 4C, the opening 11a of the yoke 11 has a pair of ends extending from the opening end 11b of the opening 11a toward the bottomed cylindrical portion (bottom) 11c. A plurality of (two in this embodiment) flange portions 12 are bent and formed through slits (notches) 11d and 11d. Each flange portion 12 is formed with a circular insertion hole 12a through which a shank portion 16a in which a screw (screw member) 16 is formed is inserted.

また、図１〜図３に示すように、ギヤケース１３の正面側の開口部１３ａにはナット（締結部材）１７を係止する複数（この実施形態では２ケ所）の締結部１４を形成してある。この各締結部１４はナット１７を収納して係止する凹部１４ａとボルト１６のシャンク部１６ａを挿通する挿通孔１４ｂとを有している。さらに、ギヤケース１３の正面側の開口部１３ａには各締結部１４より後退する位置に係合凹部１５を形成してある。そして、ギヤケース１３の係合凹部１５内にヨーク１１の開口端１１ｂを係合させ、各フランジ部１２の挿通孔１２ａよりボルト１６のシャンク部１６ａを挿通して、該ボルト１６のシャンク部１６ａを締結部１４に係止されたナット１７に螺合できるようになっている。これにより、ヨーク１１の開口部１１ａとギヤケース１３の正面側の開口部１３ａが合わされた状態でボルト１６とナット１７を介して締結固定されるようになっている。   As shown in FIGS. 1 to 3, a plurality of (two in this embodiment) fastening portions 14 for locking nuts (fastening members) 17 are formed in the opening 13 a on the front side of the gear case 13. is there. Each fastening portion 14 has a concave portion 14a for receiving and locking the nut 17 and an insertion hole 14b for inserting the shank portion 16a of the bolt 16. Further, an engagement recess 15 is formed in the opening 13 a on the front side of the gear case 13 at a position retreating from each fastening portion 14. Then, the opening end 11b of the yoke 11 is engaged in the engagement recess 15 of the gear case 13, the shank portion 16a of the bolt 16 is inserted through the insertion hole 12a of each flange portion 12, and the shank portion 16a of the bolt 16 is inserted. It can be screwed into a nut 17 locked to the fastening portion 14. As a result, the opening 11a of the yoke 11 and the opening 13a on the front side of the gear case 13 are joined together and fastened and fixed via the bolt 16 and the nut 17.

尚、図３に示すように、ギヤケース１３の一側面側の開口部１３ｂは、図示しないカバーにより覆われるようになっている。   As shown in FIG. 3, the opening 13b on one side of the gear case 13 is covered with a cover (not shown).

図２に示すように、ヨーク１１の内周面１１ｅには一対のマグネット１８，１８が接着剤等を介して固着してある。そして、ヨーク１１の有底筒部１１ｃに嵌合された軸受１９ａと、ギヤケース１３の軸穴１３ｃの両端近傍に嵌合された一対の軸受１９ｂ，１９ｃとでアーマチュア軸２１を回転自在に支持してある。   As shown in FIG. 2, a pair of magnets 18 and 18 are fixed to the inner peripheral surface 11e of the yoke 11 with an adhesive or the like. The armature shaft 21 is rotatably supported by a bearing 19a fitted to the bottomed cylindrical portion 11c of the yoke 11 and a pair of bearings 19b and 19c fitted near both ends of the shaft hole 13c of the gear case 13. It is.

このアーマチュア軸２１は、その一端の近傍にウォーム２２を形成してある。また、アーマチュア軸２１の一対のマグネット１８，１８に対向する位置にはアーマチュア２０を取り付けてある。このアーマチュア２０は、アーマチュア軸２１に固定され、所定のスロット数のコイル巻回部を持つアーマチュアコア２０ａと、このアーマチュアコア２０ａのコイル巻回部に巻き回されたアーマチュアコイル２０ｂとで構成されている。   The armature shaft 21 has a worm 22 formed in the vicinity of one end thereof. An armature 20 is attached to a position of the armature shaft 21 facing the pair of magnets 18 and 18. The armature 20 is composed of an armature core 20a fixed to an armature shaft 21 and having a coil winding portion having a predetermined number of slots, and an armature coil 20b wound around the coil winding portion of the armature core 20a. Yes.

さらに、アーマチュア軸２１のヨーク１１とギヤケース１３との境部分に対向する位置の該ヨーク１１の開口部１１ａ内には、コンミュテータ２３を固定してある。このコンミュテータ２３はアーマチュアコア２０ａのコイル巻回部と同数のコンミュテータ片２３ａを備えていて、各コンミュテータ片２３ａとアーマチュアコイル２０ｂとは電気的にそれぞれ接続されている。   Further, a commutator 23 is fixed in the opening 11 a of the yoke 11 at a position facing the boundary between the yoke 11 of the armature shaft 21 and the gear case 13. The commutator 23 includes the same number of commutator pieces 23a as the coil winding portion of the armature core 20a, and each commutator piece 23a and the armature coil 20b are electrically connected to each other.

さらに、ギヤケース１３の係合凹部１５内に位置するヨーク１１の開口部１１ａ内のコンミュテータ２３に対向する位置には、ブラシホルダ２４を介して一対のブラシ２５，２５をコンミュテータ片２３ａに接触するように取り付けてある。各ブラシ２５は図示しないモータ制御回路にそれぞれ電気的に接続されていて、このモータ制御回路の制御により電流がアーマチュア２０等に流れてアーマチュア軸２１が正逆回転するようになっている。   Further, a pair of brushes 25 and 25 are brought into contact with the commutator piece 23 a via the brush holder 24 at a position facing the commutator 23 in the opening 11 a of the yoke 11 located in the engagement recess 15 of the gear case 13. It is attached to. Each brush 25 is electrically connected to a motor control circuit (not shown). Under the control of the motor control circuit, a current flows through the armature 20 and the like, so that the armature shaft 21 rotates forward and backward.

また、ギヤケース１３の略中央には、軸穴１３ｃに連通する凹状の減速機構収納部１３ｄを形成してある。この減速機構収納部１３ｄ内には、アーマチュア軸２１のウォーム２２に噛合するウォームホイール２６を回転自在に支持してある。このウォームホイール２６の中央には出力軸２７が固定されている。これらウォーム２２とウォームホイール２６とでアーマチュア２０のアーマチュア軸２１の回転を減速させる減速機構Ｓが構成されている。   Further, a concave reduction mechanism accommodating portion 13d that communicates with the shaft hole 13c is formed in the approximate center of the gear case 13. A worm wheel 26 that meshes with the worm 22 of the armature shaft 21 is rotatably supported in the speed reduction mechanism housing portion 13d. An output shaft 27 is fixed at the center of the worm wheel 26. The worm 22 and the worm wheel 26 constitute a speed reduction mechanism S that decelerates the rotation of the armature shaft 21 of the armature 20.

以上実施形態のモータ１０によれば、ヨーク１１の開口部１１ａの開口端１１ｂから離れた位置にフランジ部１２を折り曲げ形成すると共に、ギヤケース１３の開口部１３ａの締結部１４より後退した位置に係合凹部１５を形成し、この係合凹部１５内にヨーク１１の開口端１１ｂを係合して、ヨーク１１とギヤケース１３とをフランジ部１２とボルト１６及びナット１７を介して締結固定するようにしたことにより、図１に示すように、ギヤケース１３の開口部１３ａの係合凹部１５内にヨーク１１の開口端１１ｂを係合して収納した長さＬ分、モータ１０の全長を従来のものに比較して短くすることができる。これにより、モータ１０の組み付け時にそのレイアウト性を向上させることができる。   According to the motor 10 of the embodiment described above, the flange portion 12 is bent at a position away from the opening end 11b of the opening portion 11a of the yoke 11, and is engaged with the position retracted from the fastening portion 14 of the opening portion 13a of the gear case 13. A joint recess 15 is formed, and the opening end 11 b of the yoke 11 is engaged in the engagement recess 15 so that the yoke 11 and the gear case 13 are fastened and fixed via the flange portion 12, the bolt 16 and the nut 17. As a result, as shown in FIG. 1, the total length of the motor 10 is the same as that of the conventional motor 10 by the length L that is received by engaging the opening end 11b of the yoke 11 in the engagement recess 15 of the opening 13a of the gear case 13. Can be shortened compared to Thereby, the layout property can be improved when the motor 10 is assembled.

また、ギヤケース１３の係合凹部１５内に位置するヨーク１１内にブラシホルダ２４を収納したことにより、ヨーク１１はギヤケース１３より比重が大きいためモータ１０の作動音を低減することができる。   In addition, since the brush holder 24 is housed in the yoke 11 located in the engagement recess 15 of the gear case 13, the yoke 11 has a greater specific gravity than the gear case 13, so that the operating noise of the motor 10 can be reduced.

尚、前記実施形態によれば、ねじ部材としてボルトを用いて該ボルトをギヤケースの締結部に係止したナットと螺合して締結固定するようにしたが、ビス等のねじ部材を用いてギヤケースの締結部に形成したねじ穴に直接螺合して締結固定するようにしても良い。   According to the embodiment, a bolt is used as a screw member, and the bolt is screwed and fixed to a nut locked to a fastening portion of the gear case. However, a gear case using a screw member such as a screw is used. It may be configured to be screwed and fixed directly to a screw hole formed in the fastening portion.

本発明の一実施形態のモータを示す底面図である。It is a bottom view which shows the motor of one Embodiment of this invention. 上記モータの断面図である。It is sectional drawing of the said motor. 上記モータに用いられるギヤケースにモータケースを組み付ける前の状態を示す斜視図である。It is a perspective view which shows the state before attaching a motor case to the gear case used for the said motor. （ａ）は上記モータケースの開口端にフランジ部を折り曲げ成形する前の状態を示す部分平面図、（ｂ）は同折り曲げ成形後のフランジ部の平面図、（ｃ）は同折り曲げ成形後のフランジ部の断面図である。(A) is a partial plan view showing a state before the flange portion is bent at the opening end of the motor case, (b) is a plan view of the flange portion after the bending, and (c) is a state after the bending. It is sectional drawing of a flange part. 従来のモータの分解図である。It is an exploded view of the conventional motor.

符号の説明Explanation of symbols

１０ モータ
１１ ヨーク（モータケース）
１１ａ 開口部
１１ｂ 開口端
１１ｃ 有底筒部（底部）
１１ｄ，１１ｄ 一対のスリット（切欠部）
１２ フランジ部
１２ａ 挿通孔
１３ ギヤケース
１４ 締結部
１５ 係合凹部
１６ ボルト（ねじ部材）
１６ａ シャンク部（ねじ部）
１７ ナット（締結部材）
１８ マグネット
１９ａ，１９ｂ．１９ｃ 軸受
２０ アーマチュア
２１ アーマチュア軸
２３ コンミュテータ
２４ ブラシホルダ
２５ ブラシ 10 motor 11 yoke (motor case)
11a Opening part 11b Opening end 11c Bottomed cylindrical part (bottom part)
11d, 11d A pair of slits (notches)
12 flange portion 12a insertion hole 13 gear case 14 fastening portion 15 engagement recess 16 bolt (screw member)
16a Shank part (screw part)
17 Nut (fastening member)
18 Magnet 19a, 19b. 19c Bearing 20 Armature 21 Armature shaft 23 Commutator 24 Brush holder 25 Brush

Claims (2)

金属製で有底筒状のモータケースと、減速機構が収納される樹脂製のギヤケースとを備え、前記モータケースの内周面に配置された一対のマグネットと、前記モータケースに設けられた軸受と前記ギヤケースに設けられた軸受とでアーマチュア軸を回転自在に支持し、前記アーマチュア軸の一対のマグネットに対向する位置にアーマチュアを取り付け、前記アーマチュア軸にコンミュテータを固定し、前記コンミュテータに押圧するブラシを保持するブラシホルダとを備えたモータにおいて、前記モータケースの開口部に径方向外側に延びるフランジ部を形成すると共に、該フランジ部にねじ部材を挿通させる挿通孔を形成する一方、前記ギヤケースの開口部に前記ねじ部材を締結する締結部を形成し、前記フランジ部の挿通孔より前記ねじ部材を挿通すると共に該ねじ部材のねじ部を前記締結部に螺合し、前記ギヤケースの開口部に前記締結部より後退する係合凹部を形成し、この係合凹部内に前記モータケースの開口端を係合して前記モータケースと前記ギヤケースとを前記ねじ部材を介して締結固定すると共に、前記ギヤケースの係合凹部に位置する前記モータケース内にブラシホルダを収納するようにしたことを特徴とするモータ。   A metal bottomed cylindrical motor case and a resin gear case in which a speed reduction mechanism is housed, a pair of magnets disposed on the inner peripheral surface of the motor case, and a bearing provided in the motor case And a bearing provided in the gear case, a brush that rotatably supports the armature shaft, attaches the armature to a position facing the pair of magnets of the armature shaft, fixes the commutator to the armature shaft, and presses against the commutator And a brush holder for holding a flange, and a flange portion extending radially outward is formed in the opening of the motor case, and an insertion hole through which a screw member is inserted is formed in the flange portion. A fastening portion for fastening the screw member to the opening is formed, and the screw is inserted from the insertion hole of the flange portion. A threaded portion of the screw member is threadedly engaged with the fastening portion, and an engagement recess that retreats from the fastening portion is formed in the opening of the gear case, and the opening of the motor case is formed in the engagement recess. The motor case and the gear case are fastened and fixed via the screw member by engaging the ends, and the brush holder is housed in the motor case located in the engagement recess of the gear case. Motor. 金属製で有底筒状のモータケースと、このモータケースの開口部に結合され減速機構が収納される樹脂製のギヤケースとを備え、前記モータケースの内周面に配置された一対のマグネットと、前記モータケースに設けられた軸受と前記ギヤケースに設けられた軸受とでアーマチュア軸を回転自在に支持し、前記アーマチュア軸の一対のマグネットに対向する位置にアーマチュアを取り付け、前記アーマチュア軸にコンミュテータを固定し、前記コンミュテータに押圧するブラシを保持するブラシホルダとを備えたモータにおいて、前記モータケースの開口部に該開口部の開口端から底部側に延びる一対のスリットを介して径方向外側に延びるフランジ部を折り曲げ形成し、該フランジ部にボルトのシャンク部を挿通させる挿通孔を形成し、前記ギヤケースの開口部にナットを係止する締結部を形成し、前記フランジ部の挿通孔より前記ボルトのシャンク部を挿通して前記締結部のナットに該ボルトのシャンク部を螺合して前記モータケースと前記ギヤケースとを締結固定するようにし、前記ギヤケースの開口部に前記締結部より後退する係合凹部を形成し、この係合凹部内に前記モータケースの開口端を係合して前記モータケースと前記ギヤケースとを前記ボルトと前記ナットを介して締結固定すると共に、前記ギヤケースの係合凹部に位置する前記モータケース内にブラシホルダを収納するようにしたことを特徴とするモータ。

A pair of magnets disposed on the inner peripheral surface of the motor case, comprising a metal-made bottomed cylindrical motor case and a resin gear case that is coupled to an opening of the motor case and houses a speed reduction mechanism; The armature shaft is rotatably supported by a bearing provided in the motor case and a bearing provided in the gear case, an armature is attached to a position of the armature shaft facing a pair of magnets, and a commutator is attached to the armature shaft. A motor including a brush holder that holds and holds a brush that presses against the commutator, and extends radially outward through a pair of slits extending from the opening end of the opening to the bottom side of the opening of the motor case. The flange is bent and an insertion hole is formed in the flange to insert the shank of the bolt. A fastening portion for locking a nut is formed in the opening of the gear case, the shank portion of the bolt is inserted through the insertion hole of the flange portion, and the shank portion of the bolt is screwed into the nut of the fastening portion. The case and the gear case are fastened and fixed, and an engagement recess that is retracted from the fastening portion is formed in the opening of the gear case, and the opening end of the motor case is engaged in the engagement recess and the motor A motor in which a case and the gear case are fastened and fixed through the bolt and the nut, and a brush holder is housed in the motor case located in an engagement recess of the gear case.

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010057294A (en) * 2008-08-29 2010-03-11 Mitsuba Corp Electric motor
JP2010057297A (en) * 2008-08-29 2010-03-11 Mitsuba Corp Electric motor
JPWO2019224899A1 (en) * 2018-05-22 2021-02-18 三菱電機株式会社 Electric power steering device

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JPH02273046A (en) * 1989-04-14 1990-11-07 Matsushita Electric Ind Co Ltd Permanent magnet motor
WO1999059235A1 (en) * 1998-05-14 1999-11-18 Mabuchi Motor Co., Ltd. Small-sized motor with worm speed reducer and method of manufacturing the motor
JP2000333411A (en) * 1999-05-21 2000-11-30 Mitsuba Corp Cooling structure of fan motor
JP2002079951A (en) * 2000-09-08 2002-03-19 Unisia Jecs Corp Electrically-operated power steering device
JP2002079950A (en) * 2000-09-08 2002-03-19 Unisia Jecs Corp Electric power steering system
JP2002284023A (en) * 2001-03-28 2002-10-03 Showa Corp Electric power steering device
JP2003018801A (en) * 2001-06-28 2003-01-17 Asmo Co Ltd Motor and manufacturing method of intermediate connector therefor

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JPS5866552A (en) * 1981-09-25 1983-04-20 シ−メンス・アクチエンゲゼルシヤフト Drive device
JPH02273046A (en) * 1989-04-14 1990-11-07 Matsushita Electric Ind Co Ltd Permanent magnet motor
WO1999059235A1 (en) * 1998-05-14 1999-11-18 Mabuchi Motor Co., Ltd. Small-sized motor with worm speed reducer and method of manufacturing the motor
JP2000333411A (en) * 1999-05-21 2000-11-30 Mitsuba Corp Cooling structure of fan motor
JP2002079951A (en) * 2000-09-08 2002-03-19 Unisia Jecs Corp Electrically-operated power steering device
JP2002079950A (en) * 2000-09-08 2002-03-19 Unisia Jecs Corp Electric power steering system
JP2002284023A (en) * 2001-03-28 2002-10-03 Showa Corp Electric power steering device
JP2003018801A (en) * 2001-06-28 2003-01-17 Asmo Co Ltd Motor and manufacturing method of intermediate connector therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010057294A (en) * 2008-08-29 2010-03-11 Mitsuba Corp Electric motor
JP2010057297A (en) * 2008-08-29 2010-03-11 Mitsuba Corp Electric motor
JPWO2019224899A1 (en) * 2018-05-22 2021-02-18 三菱電機株式会社 Electric power steering device

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