JP2014014200A - Motor holding structure - Google Patents
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- JP2014014200A JP2014014200A JP2012149585A JP2012149585A JP2014014200A JP 2014014200 A JP2014014200 A JP 2014014200A JP 2012149585 A JP2012149585 A JP 2012149585A JP 2012149585 A JP2012149585 A JP 2012149585A JP 2014014200 A JP2014014200 A JP 2014014200A
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Abstract
Description
本発明は、モータの保持構造に関する。 The present invention relates to a motor holding structure.
従来、車両空調用モータ等で採用されるモータの保持構造として、例えば特許文献１に示されるように、樹脂製のモータホルダの筒部内周面に、モータ本体のヨークの外周面側に突出する複数の突起が設けてられ、各突起にてモータ本体が保持されている。 2. Description of the Related Art Conventionally, as a motor holding structure employed in a vehicle air conditioning motor or the like, for example, as shown in Patent Document 1, it protrudes on the inner peripheral surface of a cylindrical portion of a resin motor holder and on the outer peripheral surface side of a yoke of a motor body. A plurality of protrusions are provided, and the motor body is held by each protrusion.
各突起は、ヨークの外周面に当接して保持する際、ヨーク内に固着される一対の磁石間の隙間部分に当接する。これは、磁石に係る磁気加振力によるヨークの振動（変形モード）において、腹が磁石中央部、節が磁石間の隙間中央部となるため、その節部分にモータホルダの突起を当接させれば、モータ駆動時に生じる振動がモータホルダ側に伝達するのが抑制される。車両空調用モータの場合では、車室内の静粛性向上に寄与する。 When each protrusion abuts and holds the outer peripheral surface of the yoke, each protrusion abuts on a gap portion between the pair of magnets fixed in the yoke. This is because in the vibration (deformation mode) of the yoke due to the magnetic excitation force applied to the magnet, the antinode is the center of the magnet and the node is the center of the gap between the magnets. Then, it is suppressed that the vibration which arises at the time of a motor drive is transmitted to the motor holder side. In the case of a vehicle air conditioning motor, it contributes to improving the quietness of the passenger compartment.
しかしながら、モータ駆動時に生じる振動の要因には磁気加振力以外にもあり、モータホルダとの保持構造を意識しつつ磁気加振力以外の要因も考慮してモータ本体を構成すれば、モータホルダの共振の一層の抑制が可能であり、その実現が望まれている。 However, there is a factor of vibration generated when the motor is driven in addition to the magnetic excitation force. If the motor body is configured in consideration of factors other than the magnetic excitation force while considering the holding structure with the motor holder, the motor holder It is possible to further suppress this resonance, and realization thereof is desired.
本発明は、上記課題を解決するためになされたものであって、その目的は、モータ駆動に伴うモータホルダの共振を一層抑制することができるモータの保持構造を提供することにある。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a motor holding structure that can further suppress the resonance of the motor holder that accompanies motor driving.
上記課題を解決するために、請求項１に記載の発明は、樹脂製のモータホルダの筒部内周面に複数の突起が設けられ、各突起がモータ本体のヨーク外周面に当接して前記モータ本体の保持を行うモータの保持構造であって、前記モータ本体を、前記ヨークの筒部内周面に周方向等角度間隔に複数の磁石を固着し、整流子に摺接するブラシを前記磁石の周方向中央部付近の角度位置に配置して構成するとともに、前記モータホルダに設けられる前記突起を、隣接の前記磁石間の隙間と前記磁石の周方向端部とを含む所定範囲内のいずれかの前記ヨークの外周面部分に当接させた。 In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a plurality of protrusions are provided on the inner peripheral surface of the cylindrical portion of the resin motor holder, and each protrusion abuts on the outer peripheral surface of the yoke of the motor body. A motor holding structure for holding a main body, wherein a plurality of magnets are fixed to the inner peripheral surface of the cylindrical portion of the yoke at equal angular intervals in the circumferential direction, and a brush that is in sliding contact with a commutator is attached to the periphery of the magnet. The projection provided on the motor holder is arranged at an angular position in the vicinity of the central portion in the direction, and any one of a predetermined range including a gap between adjacent magnets and a circumferential end of the magnet. It was made to contact | abut to the outer peripheral surface part of the said yoke.
この発明では、モータ本体は、ヨークの筒部内周面に周方向等角度間隔に複数の磁石が固着され、整流子に摺接するブラシがその磁石の周方向中央部付近の角度位置に配置される。これに対し、モータホルダに設けられる突起は、モータ本体における隣接の磁石間の隙間と磁石の周方向端部とを含む所定範囲内のいずれかのヨークの外周面部分に当接され、各突起によるモータ本体の保持が行われる。つまり、モータ本体において、磁石に係る磁気加振力を受けてヨークに生じる振動の腹部分に、整流子へのブラシの摺接時に生じる振動の内の比較的大きい径方向成分が合わさるようにし、これとは反対にヨークに生じる振動の節となるヨークの外周面部分にモータホルダの突起が当接する構造としているため、磁石及びブラシの両要因によるモータ本体からの振動がモータホルダ側に伝達するのが好適に抑制され、モータ本体の駆動に伴うモータホルダの共振を一層抑制することが可能となる。 In the present invention, the motor body has a plurality of magnets fixed to the inner circumferential surface of the cylindrical portion of the yoke at equal angular intervals in the circumferential direction, and a brush that is in sliding contact with the commutator is disposed at an angular position near the circumferential central portion of the magnet. . On the other hand, the protrusion provided on the motor holder is in contact with the outer peripheral surface portion of any yoke within a predetermined range including the gap between adjacent magnets in the motor body and the circumferential end of the magnet. The motor body is held by. In other words, in the motor body, the relatively large radial component of the vibration generated when the brush slides on the commutator is combined with the antinode of the vibration generated in the yoke by receiving the magnetic excitation force related to the magnet, On the contrary, since the projection of the motor holder is in contact with the outer peripheral surface portion of the yoke, which is a node of vibration generated in the yoke, the vibration from the motor main body due to both factors of the magnet and the brush is transmitted to the motor holder side. This is preferably suppressed, and the resonance of the motor holder accompanying the driving of the motor body can be further suppressed.
請求項２に記載の発明は、請求項１に記載のモータの保持構造において、前記モータ本体が備える前記磁石は４個であり、前記モータホルダに設けられる前記突起を、隣接の前記磁石間の隙間中央部から両側±１０°内の前記ヨークの外周面部分に当接させた。 According to a second aspect of the present invention, in the motor holding structure according to the first aspect, the motor body includes four magnets, and the protrusions provided on the motor holder are arranged between adjacent magnets. It was made to contact | abut to the outer peripheral surface part of the said yoke within +/- 10 degrees on both sides from the clearance gap center part.
この発明では、４個の磁石を備えるモータ本体のヨークの外周面において、モータホルダの突起が隣接の磁石間の隙間中央部から両側±１０°内で当接する。つまり、４個の磁石を備えるモータ本体において、モータホルダの突起がヨークに生じる振動の節となる外周面部分に適切に当接し、４個の磁石を備えるモータ本体の駆動に伴うモータホルダの共振の抑制がなされる。 In this invention, on the outer peripheral surface of the yoke of the motor main body having four magnets, the projection of the motor holder abuts within ± 10 ° on both sides from the central portion of the gap between adjacent magnets. In other words, in a motor body having four magnets, the motor holder protrusion properly abuts on the outer peripheral surface portion that becomes a node of vibration generated in the yoke, and the resonance of the motor holder accompanying the driving of the motor body having four magnets. Is suppressed.
請求項３に記載の発明は、請求項２に記載のモータの保持構造において、前記モータホルダに設けられる前記突起を、隣接の前記磁石間の隙間中央部の前記ヨークの外周面部分に当接させた。 According to a third aspect of the present invention, in the motor holding structure according to the second aspect, the protrusion provided on the motor holder is brought into contact with the outer peripheral surface portion of the yoke at the central portion of the gap between the adjacent magnets. I let you.
この発明では、ヨークの外周面において、モータホルダの突起が隣接の磁石間の隙間中央部にて当接する。つまり、ヨークの外周面において径方向加振力が最小となる部分にモータホルダの突起が当接するため、モータ本体の駆動に伴うモータホルダの共振がより確実に抑制可能となる。 In this invention, on the outer peripheral surface of the yoke, the protrusion of the motor holder abuts at the center of the gap between adjacent magnets. That is, since the protrusion of the motor holder abuts on the portion of the outer peripheral surface of the yoke where the radial excitation force is minimum, the resonance of the motor holder accompanying the driving of the motor body can be more reliably suppressed.
請求項４に記載の発明は、請求項２に記載のモータの保持構造において、前記モータホルダに設けられる前記突起を、隣接の前記磁石間の隙間中央部から両側の等角度位置に一対設けて前記ヨークの外周面部分に当接させた。 According to a fourth aspect of the present invention, in the motor holding structure according to the second aspect, a pair of the protrusions provided on the motor holder are provided at equiangular positions on both sides from the central portion of the gap between the adjacent magnets. It was made to contact | abut to the outer peripheral surface part of the said yoke.
この発明では、ヨークの外周面において、モータホルダの突起が隣接の磁石間の隙間中央部から両側の等角度位置に一対設けられて当接する。つまり、ヨークの外周面に対するモータホルダの突起の当接をヨークにおいて径方向加振力が十分小さくなる部分に当接させつつ、各隙間部分に一対ずつ、周方向全体ではその当接箇所を多く設けることができるため、モータホルダの共振抑制とモータ本体の安定保持との両立が可能となる。 According to the present invention, a pair of protrusions of the motor holder are provided and contacted at equal angular positions on both sides from the central portion of the gap between adjacent magnets on the outer peripheral surface of the yoke. In other words, the contact of the projection of the motor holder with the outer peripheral surface of the yoke is brought into contact with a portion where the radial excitation force is sufficiently small in the yoke, and there are a large number of contact portions in the entire circumferential direction, one pair for each gap portion. Since it can be provided, it is possible to achieve both suppression of resonance of the motor holder and stable holding of the motor body.
請求項５に記載の発明は、請求項４に記載のモータの保持構造において、前記モータホルダに設けられる前記突起を、前記磁石の周方向端部の前記ヨークの外周面部分に当接させた。 According to a fifth aspect of the present invention, in the motor holding structure according to the fourth aspect, the protrusion provided on the motor holder is brought into contact with an outer peripheral surface portion of the yoke at a circumferential end of the magnet. .
この発明では、ヨークの外周面において、モータホルダの一対の突起が隣接の磁石の周方向端部部分に当接して、モータホルダの共振抑制とモータ本体の安定保持との両立が図られる。 In this invention, on the outer peripheral surface of the yoke, the pair of protrusions of the motor holder comes into contact with the circumferential end portions of the adjacent magnets, so that both suppression of resonance of the motor holder and stable holding of the motor body can be achieved.
本発明によれば、モータ駆動に伴うモータホルダの共振を一層抑制することができるモータの保持構造を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the holding structure of the motor which can suppress further the resonance of the motor holder accompanying a motor drive can be provided.
（第１実施形態）
以下、本発明を具体化した第１実施形態を図面に従って説明する。
図１に示すように、車両空調用モータ（ブロワモータ）１０は、車両の空調ダクト（図示略）に取り付けられるモータホルダ１１にモータ本体２１が保持される構成をなしている。モータホルダ１１は、樹脂成形品であり、略円形状をなすフランジ部１２の中央にホルダ部１３が一体に形成されてなる。ホルダ部１３は、外形略円柱状をなすモータ本体２１を収容保持すべく有底円筒状をなし、その円筒部１３ａの内周面には、周方向等角度間隔（９０°間隔）に４個の保持突起１３ｂが突設されている。保持突起１３ｂは、モータ本体２１のヨーク２２の軸方向長さ程度の範囲で連続形状又は点在した形状をなしている。そして、これら各保持突起１３ｂを有する円筒部１３ａ（ホルダ部１３）にモータ本体２１が圧入され、各保持突起１３ｂがヨーク２２の外周面に圧接することでモータ本体２１が保持される。
(First embodiment)
A first embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a vehicle air conditioning motor (blower motor) 10 has a configuration in which a motor body 21 is held by a motor holder 11 attached to an air conditioning duct (not shown) of a vehicle. The motor holder 11 is a resin molded product, and a holder portion 13 is integrally formed at the center of a substantially circular flange portion 12. The holder portion 13 has a bottomed cylindrical shape for accommodating and holding the motor body 21 having a substantially columnar outer shape, and four holder portions 13 are provided at equal circumferential intervals (90 ° intervals) on the inner peripheral surface of the cylindrical portion 13a. The holding projection 13b is provided in a protruding manner. The holding projections 13b have a continuous shape or a dotted shape within the range of the axial length of the yoke 22 of the motor body 21. The motor main body 21 is press-fitted into the cylindrical portion 13a (holder portion 13) having the holding protrusions 13b, and the motor main body 21 is held by pressing the holding protrusions 13b against the outer peripheral surface of the yoke 22.
モータ本体２１は、ブラシ付き直流モータにて構成されている。有底円筒状のヨーク２２の円筒部２２ａの内周面には、４個（４極）の界磁用磁石２３が周方向等角度間隔に固着されている。各磁石２３は、同形状をなし、周方向長さが９０°範囲より若干短く（両端がそれぞれ１０°よりも若干小さい範囲）形成されている。つまり、各磁石２３は、周方向９０°間隔に磁極中心が位置するように固定され、隣接の磁石２３間には所定角度範囲の隙間２４が生じるようになっている。 The motor body 21 is composed of a brushed DC motor. Four (four poles) field magnets 23 are fixed to the inner peripheral surface of the cylindrical portion 22a of the bottomed cylindrical yoke 22 at equal circumferential intervals. Each magnet 23 has the same shape and has a circumferential length slightly shorter than the 90 ° range (both ends are slightly smaller than 10 ° each). That is, each magnet 23 is fixed so that the magnetic pole centers are positioned at intervals of 90 ° in the circumferential direction, and a gap 24 in a predetermined angle range is generated between adjacent magnets 23.
ヨーク２２内の磁石２３の内側には、電機子（アーマチャ）２５が回転可能に収容されている。電機子２５には回転軸２６及び整流子２７を備え、整流子２７の外周面には一対のブラシ２８が接触し、回転駆動時において整流子２７の外周面にブラシ２８が摺接する。一対のブラシ２８は、４個の磁石２３の内の２個の隣接する磁石２３の周方向中央位置（磁極中央位置）から若干周方向一方側にシフトした角度位置にそれぞれ配置され、ブラシ２８の後端面にスプリング（図示略）の付勢力を受けて整流子２７に押圧される。整流子２７及びブラシ２８は、電機子２５（電機子コイル）への駆動電流の極性の切り替えを機械的に行い、電機子２５にて回転角度位置に適した磁界を生じさせるものである。 An armature 25 is rotatably accommodated inside the magnet 23 in the yoke 22. The armature 25 includes a rotating shaft 26 and a commutator 27. A pair of brushes 28 are in contact with the outer peripheral surface of the commutator 27, and the brush 28 is in sliding contact with the outer peripheral surface of the commutator 27 during rotational driving. The pair of brushes 28 are respectively arranged at angular positions slightly shifted from the circumferential center position (magnetic pole center position) of two adjacent magnets 23 of the four magnets 23 to one side in the circumferential direction. The rear end face receives a biasing force of a spring (not shown) and is pressed against the commutator 27. The commutator 27 and the brush 28 mechanically switch the polarity of the drive current to the armature 25 (armature coil) and generate a magnetic field suitable for the rotational angle position in the armature 25.
そして、このような構成のモータ本体２１をモータホルダ１１のホルダ部１３に圧入保持する際、周方向等間隔に設けた各保持突起１３ｂがモータ本体２１の磁石２３間の各隙間２４の周方向中央部に対応するヨーク２２の外周面部分に当接するように、モータ本体２１のホルダ部１３に対する相対的な位置決めがなされる。この場合、モータ本体２１とモータホルダ１１との間に位置決め部を設けてもよい。 When the motor main body 21 having such a configuration is press-fitted and held in the holder portion 13 of the motor holder 11, the holding projections 13 b provided at equal intervals in the circumferential direction are circumferential directions of the gaps 24 between the magnets 23 of the motor main body 21. The motor body 21 is relatively positioned with respect to the holder portion 13 so as to abut on the outer peripheral surface portion of the yoke 22 corresponding to the center portion. In this case, a positioning part may be provided between the motor main body 21 and the motor holder 11.
次に、本実施形態の作用を説明する。図２は、モータ本体２１（ヨーク２２の外周面）の周方向位置における回転駆動時の径方向加振力を示す。尚、モータ本体２１の周方向位置は半周分であり、対向する一方の磁石２３の中央部から１つの磁石２３を挟んで他方の磁石２３の中央部までの範囲である。つまり、周方向位置の０°、９０°、１８０°が磁石２３の中央部（磁極中心）であり、４５°、１３５°が隣接の磁石２３間の隙間２４の中央部となる。同図２から、０°位置と９０°位置と１８０°位置、即ち磁石２３の中央部（磁極中心）では径方向加振力が最も大きく、４５°位置と１３５°位置、即ち隣接の磁石２３間の隙間２４の中央部では径方向加振力が最も小さくなる。つまり、モータ本体２１の回転駆動時にヨーク２２に生じる振動において、磁石２３の中央部がその振動の腹となり、隣接の磁石２３間の隙間２４の中央部が振動の節となる。 Next, the operation of this embodiment will be described. FIG. 2 shows the radial excitation force at the time of rotational driving at the circumferential position of the motor main body 21 (the outer peripheral surface of the yoke 22). The circumferential position of the motor main body 21 is a half circumference, and is a range from the central part of one opposing magnet 23 to the central part of the other magnet 23 across one magnet 23. That is, 0 °, 90 °, and 180 ° in the circumferential position are the central portions (magnetic pole centers) of the magnet 23, and 45 ° and 135 ° are the central portions of the gap 24 between the adjacent magnets 23. From FIG. 2, the radial excitation force is greatest at the 0 ° position, 90 ° position, and 180 ° position, that is, the central portion (magnetic pole center) of the magnet 23, and the 45 ° position and 135 ° position, that is, the adjacent magnet 23. In the central portion of the gap 24, the radial excitation force is the smallest. That is, in the vibration generated in the yoke 22 when the motor main body 21 is driven to rotate, the central portion of the magnet 23 becomes an antinode of the vibration, and the central portion of the gap 24 between the adjacent magnets 23 becomes a vibration node.
つまり、ヨーク２２に生じる振動（径方向加振力）としては、磁石２３が電機子２５との関係で受ける磁気加振力に、磁石２３の中央付近に配置したブラシ２８が整流子２７と摺接する際に生じる振動成分の内の径方向成分が加わる。換言すると、磁気加振力を受けてヨーク２２に生じる振動の腹部分（磁石２３の中央部分）に、ブラシ２８の摺接時に生じる振動の内の比較的大きい径方向成分が加わるようなブラシ２８の配置としている。 In other words, as vibration (radial excitation force) generated in the yoke 22, the brush 28 disposed in the vicinity of the center of the magnet 23 slides on the commutator 27 with respect to the magnetic excitation force that the magnet 23 receives in relation to the armature 25. Of the vibration components generated when contacting, a radial component is added. In other words, the brush 28 in which a relatively large radial component of vibration generated when the brush 28 is in sliding contact is added to the antinode portion of vibration (the central portion of the magnet 23) generated in the yoke 22 by receiving the magnetic excitation force. The arrangement is as follows.
このような事情に対し、モータ本体２１を保持する各保持突起１３ｂをヨーク２２の外周面において磁石２３間の隙間２４の中央部、即ちモータ本体２１の回転駆動時にヨーク２２に生じる振動の節となるヨーク２２の外周面部分に当接させている。そのため、磁石２３に係る磁気加振力とブラシ２８の摺接時の径方向加振力とにより生じる振動が各保持突起１３ｂを通じてモータホルダ１１側に伝達するのが好適に抑制され、モータ本体２１の駆動に伴うモータホルダ１１の共振を一層抑制することができる構造となっている。 For such a situation, each holding projection 13b that holds the motor body 21 has a central portion of the gap 24 between the magnets 23 on the outer peripheral surface of the yoke 22, that is, a vibration node generated in the yoke 22 when the motor body 21 is rotationally driven. It is made to contact | abut to the outer peripheral surface part of the yoke 22 which becomes. Therefore, the vibration generated by the magnetic excitation force related to the magnet 23 and the radial excitation force at the time of sliding contact of the brush 28 is suitably suppressed from being transmitted to the motor holder 11 side through each holding projection 13b. This is a structure that can further suppress the resonance of the motor holder 11 due to the driving of.
次に、本実施形態の特徴的な効果を記載する。
（１）モータ本体２１は、ヨーク２２（円筒部２２ａ）の内周面に周方向等角度間隔に４個の磁石２３が固着され、整流子２７に摺接するブラシ２８がその磁石２３の周方向中央部付近の角度位置に配置される。これに対し、モータホルダ１１のホルダ部１３に設けられる保持突起１３ｂは、モータ本体２１における隣接の磁石２３間の隙間２４の中央部から両側±１０°内（径方向加振力が「ａ」以下と小さい範囲）、本実施形態では隙間２４のその中央部となるヨーク２２の外周面部分に当接され、各突起１３ｂによるモータ本体２１の保持が行われる。つまり、モータ本体２１において、磁石２３に係る磁気加振力を受けてヨーク２２に生じる振動の腹部分に、整流子２７へのブラシ２８の摺接時に生じる振動の内の比較的大きい径方向成分が合わさるようにし、これとは反対にヨーク２２に生じる振動の節となるヨーク２２の外周面部分にモータホルダ１１の保持突起１３ｂが当接する構造としているため、磁石２３及びブラシ２８の両要因によるモータ本体２１からの振動がモータホルダ１１側に伝達するのを好適に抑制でき、モータ本体２１の駆動に伴うモータホルダ１１の共振を一層抑制することができる。
Next, characteristic effects of the present embodiment will be described.
(1) The motor main body 21 has four magnets 23 fixed to the inner peripheral surface of the yoke 22 (cylindrical portion 22a) at equal angular intervals in the circumferential direction, and the brush 28 that is in sliding contact with the commutator 27 is in the circumferential direction of the magnet 23. It is arranged at an angular position near the center. On the other hand, the holding protrusion 13b provided on the holder portion 13 of the motor holder 11 is within ± 10 ° on both sides from the center portion of the gap 24 between the adjacent magnets 23 in the motor body 21 (the radial excitation force is “a”). In the present embodiment, the motor body 21 is held by the projections 13b by contacting the outer peripheral surface portion of the yoke 22 which is the central portion of the gap 24 in this embodiment. That is, in the motor main body 21, a relatively large radial component of the vibration generated when the brush 28 slides on the commutator 27 on the antinode of the vibration generated in the yoke 22 due to the magnetic excitation force applied to the magnet 23. On the contrary, the holding projection 13b of the motor holder 11 is in contact with the outer peripheral surface portion of the yoke 22 that is a node of vibration generated in the yoke 22, and therefore, due to both factors of the magnet 23 and the brush 28. Transmission of vibration from the motor main body 21 to the motor holder 11 side can be suitably suppressed, and resonance of the motor holder 11 accompanying driving of the motor main body 21 can be further suppressed.
（２）ヨーク２２の外周面において、モータホルダ１１の保持突起１３ｂが隣接の磁石２３間の隙間２４の中央部にて当接している。つまり、ヨーク２２の外周面において径方向加振力が最小となる部分にモータホルダ１１の突起１３ｂが当接するため、モータ本体２１の駆動に伴うモータホルダ１１の共振をより確実に抑制することに貢献する。 (2) On the outer peripheral surface of the yoke 22, the holding projection 13 b of the motor holder 11 is in contact with the central portion of the gap 24 between the adjacent magnets 23. That is, since the protrusion 13b of the motor holder 11 abuts on the outer circumferential surface of the yoke 22 where the radial excitation force is minimized, the resonance of the motor holder 11 accompanying the driving of the motor body 21 is more reliably suppressed. To contribute.
（第２実施形態）
以下、本発明を具体化した第２実施形態を図面に従って説明する。
図３に示すように、本実施形態における上記第１実施形態との相違点として、モータホルダ１１に設けられる保持突起１３ｃが隣接の磁石２３間の隙間２４毎に一対ずつ設けられ、周方向全体として８個設けられる。隙間２４毎に設けられる一対の保持突起１３ｃが隣接の磁石２３間の隙間２４の中央部から両側±１０°内のヨーク２２の外周面部分にそれぞれ当接する。また、それぞれの一対の保持突起１３ｃは、隙間２４の中央部から両側に等角度位置にてヨーク２２の外周面部分と当接する。尚、この場合、それぞれの一対の保持突起１３ｃは、隣接の磁石の周方向端部となるヨーク２２の外周面部分に当接する。
(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 3, the present embodiment differs from the first embodiment in that a pair of holding projections 13 c provided on the motor holder 11 is provided for each gap 24 between adjacent magnets 23, and the entire circumferential direction is provided. Eight are provided. A pair of holding projections 13 c provided for each gap 24 abuts on the outer peripheral surface portion of the yoke 22 within ± 10 ° on both sides from the center of the gap 24 between the adjacent magnets 23. Each pair of holding projections 13 c comes into contact with the outer peripheral surface portion of the yoke 22 at equiangular positions from the center of the gap 24 to both sides. In this case, each of the pair of holding projections 13c comes into contact with the outer peripheral surface portion of the yoke 22 serving as the circumferential end portion of the adjacent magnet.
図２に示すように、ヨーク２２において磁石２３間の隙間２４の中央部から両側±１０°内であれば、その径方向加振力も「ａ」以下となって十分に小さいため、モータ本体２１からの振動がモータホルダ１１側に伝達するのが十分に抑制される。また、モータ本体２１を保持する保持突起１３ｃの数が周方向全体で多くなるため、保持突起１３ｃによるモータ本体２１の保持をより安定とすることができる構造となっている。 As shown in FIG. 2, if the yoke 22 is within ± 10 ° on both sides from the central portion of the gap 24 between the magnets 23, the radial excitation force becomes “a” or less and is sufficiently small. Is sufficiently suppressed from transmitting to the motor holder 11 side. In addition, since the number of holding projections 13c that hold the motor main body 21 increases in the entire circumferential direction, the motor main body 21 can be held more stably by the holding projections 13c.
次に、本実施形態の特徴的な効果を記載する。
（１）隙間２４毎に設けられる一対の保持突起１３ｃは、隣接の磁石２３間の隙間２４の中央部から両側±１０°内のヨーク２２の外周面部分にそれぞれ当接するため、モータ本体２１からの振動がモータホルダ１１側に伝達するのを十分に抑制でき、モータ本体２１の駆動に伴うモータホルダ１１の共振を十分に抑制することができる。加えて、隙間２４毎に保持突起１３ｃが一対、周方向全体で８個の突起１３ｃにてモータ本体２１の保持を行うため、モータホルダ１１の共振抑制とモータ本体２１の安定保持との両立を好適に図ることができる。
Next, characteristic effects of the present embodiment will be described.
(1) The pair of holding projections 13c provided for each gap 24 abuts on the outer peripheral surface portion of the yoke 22 within ± 10 ° on both sides from the center of the gap 24 between the adjacent magnets 23. Can be sufficiently suppressed from being transmitted to the motor holder 11 side, and the resonance of the motor holder 11 accompanying the driving of the motor body 21 can be sufficiently suppressed. In addition, since the motor main body 21 is held by a pair of holding protrusions 13c for each gap 24 and eight protrusions 13c in the entire circumferential direction, both suppression of resonance of the motor holder 11 and stable holding of the motor main body 21 are achieved. This can be suitably achieved.
尚、本発明の実施形態は、以下のように変更してもよい。
・モータホルダ１１の保持突起１３ｂのヨーク２２の外周面への当接を、隣接の磁石２３間の隙間２４の中央部から両側±１０°内（これ以内で突起の少なくとも一部が当接）であれば、当接位置をいずれに変更しても、また当接させる突起の個数も適宜変更してもよい。例えば隙間２４毎に１個の保持突起としても、隙間２４の中央部からずらして設けてもよい。また、隙間２４毎に設ける保持突起を一対（２個）以上としてもよい。図２からわかるように、隙間２４の中央部（４５°位置、１３５°位置）から両側±１０°内では径方向加振力が「ａ」以下となって十分に小さいため、この範囲内に保持突起を設ければ、モータ本体２１の駆動に伴うモータホルダ１１の共振を十分に抑制可能である。
In addition, you may change embodiment of this invention as follows.
The contact of the holding projection 13b of the motor holder 11 with the outer peripheral surface of the yoke 22 is within ± 10 ° on both sides from the central portion of the gap 24 between the adjacent magnets 23 (at least part of the projection contacts within this range) If so, the contact position may be changed to any position, and the number of protrusions to be contacted may be appropriately changed. For example, one holding protrusion may be provided for each gap 24 and may be provided by being shifted from the central portion of the gap 24. Further, a pair of (two) or more holding protrusions provided for each gap 24 may be used. As can be seen from FIG. 2, the radial excitation force becomes “a” or less within ± 10 ° on both sides from the center portion (45 ° position, 135 ° position) of the gap 24, and thus within this range. If the holding projection is provided, the resonance of the motor holder 11 accompanying the driving of the motor body 21 can be sufficiently suppressed.
・モータ本体２１に備える磁石２３を４個（４極）以外で構成してもよい。
・車両空調用モータ１０におけるモータ本体２１の保持構造に適用したが、これ以外のモータの保持構造に適用してもよい。
-You may comprise the magnet 23 with which the motor main body 21 is provided except 4 pieces (4 poles).
-Although it applied to the holding structure of the motor main body 21 in the motor 10 for vehicle air conditioning, you may apply to the holding structure of other motors.
１１…モータホルダ、１３ｂ，１３ｃ…保持突起（突起）、２１…モータ本体（モータ）、２２…ヨーク、２３…磁石、２４…隙間、２７…整流子、２８…ブラシ。 DESCRIPTION OF SYMBOLS 11 ... Motor holder, 13b, 13c ... Holding protrusion (protrusion), 21 ... Motor main body (motor), 22 ... Yoke, 23 ... Magnet, 24 ... Gap, 27 ... Commutator, 28 ... Brush
Claims (5)
前記モータ本体を、前記ヨークの筒部内周面に周方向等角度間隔に複数の磁石を固着し、整流子に摺接するブラシを前記磁石の周方向中央部付近の角度位置に配置して構成するとともに、
前記モータホルダに設けられる前記突起を、隣接の前記磁石間の隙間と前記磁石の周方向端部とを含む所定範囲内のいずれかの前記ヨークの外周面部分に当接させたことを特徴とするモータの保持構造。 A motor holding structure in which a plurality of protrusions are provided on an inner peripheral surface of a cylindrical portion of a resin motor holder, and each protrusion abuts a yoke outer peripheral surface of the motor main body to hold the motor main body,
The motor body is configured by fixing a plurality of magnets on the inner peripheral surface of the cylindrical portion of the yoke at equal angular intervals in the circumferential direction and arranging a brush that is in sliding contact with the commutator at an angular position near the circumferential central portion of the magnet. With
The protrusion provided on the motor holder is in contact with an outer peripheral surface portion of one of the yokes within a predetermined range including a gap between adjacent magnets and a circumferential end of the magnet. Motor holding structure.
前記モータ本体が備える前記磁石は４個であり、
前記モータホルダに設けられる前記突起を、隣接の前記磁石間の隙間中央部から両側±１０°内の前記ヨークの外周面部分に当接させたことを特徴とするモータの保持構造。 The motor holding structure according to claim 1,
The motor body has four magnets,
A holding structure for a motor, wherein the protrusion provided on the motor holder is brought into contact with an outer peripheral surface portion of the yoke within ± 10 ° on both sides from a central portion of a gap between adjacent magnets.
前記モータホルダに設けられる前記突起を、隣接の前記磁石間の隙間中央部の前記ヨークの外周面部分に当接させたことを特徴とするモータの保持構造。 The motor holding structure according to claim 2,
A holding structure for a motor, wherein the protrusion provided on the motor holder is brought into contact with an outer peripheral surface portion of the yoke at a central portion of a gap between adjacent magnets.
前記モータホルダに設けられる前記突起を、隣接の前記磁石間の隙間中央部から両側の等角度位置に一対設けて前記ヨークの外周面部分に当接させたことを特徴とするモータの保持構造。 The motor holding structure according to claim 2,
A holding structure for a motor, wherein a pair of the protrusions provided on the motor holder are provided at equal angular positions on both sides from a central portion of a gap between adjacent magnets and are brought into contact with an outer peripheral surface portion of the yoke.
前記モータホルダに設けられる前記突起を、前記磁石の周方向端部の前記ヨークの外周面部分に当接させたことを特徴とするモータの保持構造。 The motor holding structure according to claim 4,
A holding structure for a motor, wherein the protrusion provided on the motor holder is in contact with an outer peripheral surface portion of the yoke at a circumferential end of the magnet.
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| JP2012149585A JP2014014200A (en) | 2012-07-03 | 2012-07-03 | Motor holding structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2017229214A (en) * | 2016-06-24 | 2017-12-28 | 株式会社Ｓｏｋｅｎ | Motor device |
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