JP6026850B2 - motor - Google Patents
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- JP6026850B2 JP6026850B2 JP2012235775A JP2012235775A JP6026850B2 JP 6026850 B2 JP6026850 B2 JP 6026850B2 JP 2012235775 A JP2012235775 A JP 2012235775A JP 2012235775 A JP2012235775 A JP 2012235775A JP 6026850 B2 JP6026850 B2 JP 6026850B2
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Description
本発明は、エンドブラケットの切り欠き凹部に被収容部材が収容されるモータに関するものである。 The present invention relates to a motor in which a member to be accommodated is accommodated in a notch recess of an end bracket.
従来、モータとしては、略有底筒状のヨークと、該ヨークの開口端との対向部分の一部に切り欠き凹部が形成されヨークの開口端を略閉塞するように固定されるエンドブラケットと、前記切り欠き凹部に収容されて抜け止め用爪によって切り欠き凹部からの抜けが規制される被収容部材（回転検出器）とを備えたものがある（例えば、特許文献１参照）。 Conventionally, as a motor, a substantially bottomed cylindrical yoke, and an end bracket that is fixed so as to substantially close the opening end of the yoke by forming a notch in a part of a portion facing the opening end of the yoke And a member to be accommodated (rotation detector) that is housed in the notch recess and is prevented from being removed from the notch recess by a retaining claw (see, for example, Patent Document 1).
しかしながら、上記のようなモータでは、被収容部材の軸方向長さ及び切り欠き凹部の深さ等の寸法精度を高精度にしないと、ヨークの開口端と被収容部材との間（即ち隙間）から塵等の異物が侵入する虞があった。尚、ヨークの開口端と被収容部材とを確実に当接させるために被収容部材の軸方向長さをヨークの開口端と切り欠き凹部の底部との間隔よりも僅かに大きく設定することも考えられるが、その場合、被収容部材が介在（挟持）されることによってヨークに対してエンドブラケットが傾いてしまう虞がある。よって、被収容部材の軸方向長さ及び切り欠き凹部の深さ等の寸法精度を高精度にしないと、ヨークの開口端と被収容部材との間から塵等の異物が侵入する虞があった。 However, in the motor as described above, unless the dimensional accuracy such as the axial length of the member to be accommodated and the depth of the notch recess is made high, the gap between the opening end of the yoke and the member to be accommodated (that is, the gap). There is a risk that foreign matter such as dust may enter. In order to ensure that the opening end of the yoke and the member to be received are in contact with each other, the axial length of the member to be stored may be set slightly larger than the distance between the opening end of the yoke and the bottom of the notch recess. In this case, the end bracket may be inclined with respect to the yoke due to the inclusion (holding) of the member to be accommodated. Therefore, if the dimensional accuracy such as the axial length of the member to be accommodated and the depth of the notch recess is not made high, foreign matter such as dust may enter from between the opening end of the yoke and the member to be accommodated. It was.
本発明は、上記問題点を解決するためになされたものであって、その目的は、寸法精度を高精度とすることなく、ヨークの開口端と被収容部材との間からの異物の侵入を防止することができるモータを提供することにある。 The present invention has been made to solve the above problems, and its purpose is to prevent foreign matter from entering between the open end of the yoke and the member to be accommodated without increasing the dimensional accuracy. The object is to provide a motor that can be prevented.
上記課題を解決するモータは、回転子が収容される略有底筒状のヨークと、前記ヨークの開口端との対向部分の一部に前記回転子の軸方向に凹設された切り欠き凹部が形成され、該切り欠き凹部を除く対向部分が前記ヨークの開口端を略閉塞するように固定されるエンドブラケットと、前記切り欠き凹部に収容され、抜け止め用爪によって前記切り欠き凹部からの抜けが規制される被収容部材とを備えたモータであって、前記抜け止め用爪は、前記被収容部材が前記ヨークの開口端に当接する位置までは該被収容部材が軸方向に移動可能としながら前記切り欠き凹部からの前記被収容部材の抜けを規制するように設定されており、前記抜け止め用爪が前記被収容部材の軸方向の移動を規制した状態において、該被収容部材は前記ヨークの開口端に当接しており、前記抜け止め用爪は、前記エンドブラケットと前記軸方向の直交方向に押圧接触する押圧接触部を構成する。 A motor that solves the above problems includes a cutout recess that is recessed in the axial direction of the rotor at a part of a portion facing a substantially bottomed cylindrical yoke that accommodates the rotor and the opening end of the yoke. And an end bracket that is fixed so that an opposing portion excluding the notch recess substantially closes the opening end of the yoke, and is housed in the notch recess and is separated from the notch recess by a retaining claw. A motor including a member to be prevented from coming off, wherein the stopper member is movable in an axial direction until the member to be in contact with the opening end of the yoke. and while said is set so as to regulate the loss of the receiving member from the notch recesses, in a state in which the retaining claw has restrict the axial movement of the object receiving member,該被containing member Opening of the yoke Abuts on, the stop claw omission constitutes a pressure contact portion for pressing contact with the perpendicular direction of the axial and said end bracket.
同構成によれば、抜け止め用爪は、被収容部材がヨークの開口端に当接する位置までは該被収容部材が軸方向に移動可能としながら切り欠き凹部からの前記被収容部材の抜けを規制するように設定されるため、被収容部材は、予め設定された範囲で軸方向に移動可能とされながらも切り欠き凹部からの抜けが規制される。そして、抜け止め用爪はエンドブラケットと軸方向の直交方向に押圧接触する押圧接触部を構成するため、被収容部材を前記予め設定された範囲内の任意の位置でエンドブラケットに対して保持させることができる。よって、被収容部材の軸方向長さ及び切り欠き凹部の深さ等の寸法精度を高精度とすることなく、ヨークの開口端と被収容部材とを当接させて保持することができ、その間からの異物の侵入を防止することができる。 According to this configuration, the retaining claws prevent the member to be removed from the notch recess while allowing the member to be moved in the axial direction to a position where the member to be abutted against the opening end of the yoke. Since it is set so as to be regulated, the member to be accommodated is restricted from coming out of the notch recess while being movable in the axial direction within a preset range. Since the retaining pawl constitutes a pressing contact portion that presses and contacts the end bracket in the direction orthogonal to the axial direction, the member to be accommodated is held with respect to the end bracket at an arbitrary position within the preset range. be able to. Therefore, the opening end of the yoke and the member to be accommodated can be held in contact with each other without increasing the dimensional accuracy such as the axial length of the member to be accommodated and the depth of the notch recess. Intrusion of foreign matter from the can be prevented.
上記モータにおいて、前記エンドブラケットはターミナルが配設されるものであって、該ターミナルは、前記エンドブラケットと前記被収容部材との間に保持されることが好ましい。 In the motor, the end bracket is preferably provided with a terminal, and the terminal is preferably held between the end bracket and the member to be accommodated.
同構成によれば、ターミナルは、エンドブラケットと被収容部材との間に保持されるため、特に専用のターミナル保持爪等を設けることなくターミナルの組み付けを容易としながら、その移動や変形を防止することができる。即ち、エンドブラケットにターミナルを配置し、その後、被収容部材を組み付けるだけで、ターミナルをエンドブラケットと被収容部材との間に保持させることができ、その移動や変形を防止することができる。 According to this configuration, since the terminal is held between the end bracket and the member to be received, the terminal can be easily assembled without any special terminal holding claws or the like, and its movement and deformation are prevented. be able to. That is, the terminal can be held between the end bracket and the member to be accommodated simply by arranging the terminal on the end bracket and then assembling the member to be accommodated, and the movement and deformation of the terminal can be prevented.
上記モータにおいて、前記切り欠き凹部の底部と前記被収容部材には、軸方向に嵌り合う嵌挿部が形成されることが好ましい。
同構成によれば、切り欠き凹部の底部と被収容部材には、軸方向に嵌り合う嵌挿部が形成されるため、被収容部材が切り欠き凹部の最も底側まで到達していない位置で前記押圧接触部によってエンドブラケットに対して保持されても、切り欠き凹部の底部と被収容部材との間からの異物の侵入を嵌挿部によって防止することができる。
In the motor, it is preferable that an insertion portion that fits in an axial direction is formed in a bottom portion of the notch recess and the member to be accommodated.
According to this configuration, since the insertion portion that fits in the axial direction is formed in the bottom portion of the notch recess and the accommodated member, the accommodated member does not reach the bottom side of the notch recess. Even if the pressing contact portion is held against the end bracket, the insertion of the foreign matter from between the bottom portion of the notch recess and the member to be accommodated can be prevented.
上記モータにおいて、前記ヨークには、前記回転子の回転軸の一端側を支持するための軸受が設けられ、前記エンドブラケットには、前記回転子の回転軸の他端側を支持するための軸受が設けられることが好ましい。 In the motor, the yoke is provided with a bearing for supporting one end side of the rotating shaft of the rotor, and the end bracket is a bearing for supporting the other end side of the rotating shaft of the rotor. Is preferably provided.
同構成によれば、ヨークには、回転子の回転軸の一端側を支持するための軸受が設けられ、エンドブラケットには、回転子の回転軸の他端側を支持するための軸受が設けられるが、上記構成によってヨークに対してエンドブラケットが傾くことがないので、一対の軸受が傾いてしまうことが抑えられ、回転軸を良好に支持することができる。詳しくは、上記構成では、ヨークの開口端と被収容部材とを当接させるために被収容部材の軸方向長さをヨークの開口端と切り欠き凹部の底部との間隔よりも僅かに大きく設定する必要がなく、被収容部材が介在（挟持）されることによってヨークに対してエンドブラケットが傾いてしまうといったことがない。よって、ヨーク及びエンドブラケットに設けられる一対の軸受の軸心同士が傾いてしまうことが抑えられ、回転軸を良好に支持することができる。 According to this configuration, the yoke is provided with a bearing for supporting one end of the rotor rotation shaft, and the end bracket is provided with a bearing for supporting the other end of the rotor rotation shaft. However, since the end bracket is not inclined with respect to the yoke by the above configuration, the pair of bearings are prevented from being inclined, and the rotating shaft can be favorably supported. Specifically, in the above configuration, the axial length of the receiving member is set slightly larger than the interval between the opening end of the yoke and the bottom of the notch recess in order to bring the opening end of the yoke into contact with the receiving member. There is no need to do this, and the end bracket is not inclined with respect to the yoke by interposing (holding) the member to be accommodated. Therefore, it is possible to prevent the shaft centers of the pair of bearings provided on the yoke and the end bracket from being inclined, and to support the rotating shaft satisfactorily.
上記モータにおいて、前記被収容部材は、前記回転子の回転を検出するための回転検出部材、又は、前記切り欠き凹部を埋めるためのスペーサ部材であることが好ましい。
同構成によれば、被収容部材は、回転子の回転を検出するための回転検出部材、又は、切り欠き凹部を埋めるためのスペーサ部材であるため、回転検出部材を備えたモータにおいて上記効果を得ることができる、又は、回転検出部材が不要な仕様のモータにおいて上記効果を得ることができる。
In the motor, it is preferable that the member to be accommodated is a rotation detection member for detecting rotation of the rotor or a spacer member for filling the notch recess.
According to this configuration, since the member to be accommodated is a rotation detection member for detecting the rotation of the rotor or a spacer member for filling the notch recess, the above effect is achieved in the motor including the rotation detection member. The above-described effects can be obtained in a motor that can be obtained or that does not require a rotation detection member.
本発明のモータでは、寸法精度を高精度とすることなく、ヨークの開口端と被収容部材との間からの異物の侵入を防止することができる。 In the motor of the present invention, it is possible to prevent foreign matter from entering between the opening end of the yoke and the member to be accommodated without increasing the dimensional accuracy.
以下、モータの一実施形態を図１〜図５に従って説明する。
図１〜図３に示すように、モータ１は、略有底筒状のヨーク２と、ヨーク２の開口端２ａを略閉塞するように固定されるエンドブラケット３とを備える。
Hereinafter, an embodiment of a motor will be described with reference to FIGS.
As shown in FIGS. 1 to 3, the motor 1 includes a substantially bottomed cylindrical yoke 2 and an end bracket 3 that is fixed so as to substantially close the opening end 2 a of the yoke 2.
図３に示すように、ヨーク２の内周面には、界磁マグネット４が固着されている。又、ヨーク２の頂部（図３中、上部）には、径が小さくされて軸方向に延びる小径部２ｂが形成され、該小径部２ｂの内周面には軸受５が保持されている。尚、本実施形態の軸受５は、筒状の含油軸受である。そして、ヨーク２において、界磁マグネット４の内側には、回転子（電機子）６が収容されている。回転子６は、一端側（図３中、上端側）が軸受５に支持される回転軸７と、該回転軸７に固定される電機子コア８と、該電機子コア８に巻装される巻線９と、電機子コア８よりも他端側（図３中、下端側）の回転軸７に固定され巻線９と接続される整流子１０とを備える。 As shown in FIG. 3, a field magnet 4 is fixed to the inner peripheral surface of the yoke 2. Further, a small diameter portion 2b having a reduced diameter and extending in the axial direction is formed at the top portion (upper portion in FIG. 3) of the yoke 2, and a bearing 5 is held on the inner peripheral surface of the small diameter portion 2b. In addition, the bearing 5 of this embodiment is a cylindrical oil-impregnated bearing. In the yoke 2, a rotor (armature) 6 is accommodated inside the field magnet 4. The rotor 6 is wound around the rotary shaft 7 supported on the bearing 5 at one end side (the upper end side in FIG. 3), the armature core 8 fixed to the rotary shaft 7, and the armature core 8. And a commutator 10 fixed to the rotary shaft 7 on the other end side (lower end side in FIG. 3) than the armature core 8 and connected to the winding 9.
エンドブラケット３は、樹脂材にてヨーク２の開口端２ａを略閉塞可能に形成されている。エンドブラケット３の中央には、回転軸７の軸方向に沿って延びる筒部３ａが形成され、該筒部の内周面には、回転軸７の他端側を支持するための軸受１１が保持されている。即ち、回転軸７は、その一端側が軸受５に支持され、他端側が軸受１１に支持されて、回転可能に支持されている。 The end bracket 3 is formed of a resin material so that the open end 2a of the yoke 2 can be substantially closed. At the center of the end bracket 3, a cylindrical portion 3a extending along the axial direction of the rotary shaft 7 is formed, and a bearing 11 for supporting the other end side of the rotary shaft 7 is formed on the inner peripheral surface of the cylindrical portion. Is retained. That is, the rotary shaft 7 is supported rotatably by the bearing 5 at one end and supported by the bearing 11 at the other end.
又、図２に示すように、エンドブラケット３には、回転軸７の軸方向から見て９０°間隔の位置にヨーク２の外部に突出して図示しないモータ載置部材に固定するための固定部３ｂが形成されている。又、エンドブラケット３には、回転軸７の軸方向から見て１組の隣り合う固定部３ｂの間の位置からヨーク２の外部（図２及び図３中、右側）に延出した延出部３ｃが形成され、その延出部３ｃにはヨーク２の外側で回転軸７の軸方向に沿って延びる筒状のコネクタ筒部３ｄが形成されている。尚、コネクタ筒部３ｄには、図示しない制御装置からの外部コネクタが嵌着されることになる。 Further, as shown in FIG. 2, the end bracket 3 has a fixing portion for protruding to the outside of the yoke 2 at positions spaced by 90 ° when viewed from the axial direction of the rotating shaft 7 and fixing to a motor mounting member (not shown). 3b is formed. Further, the end bracket 3 extends to the outside of the yoke 2 (on the right side in FIGS. 2 and 3) from a position between a pair of adjacent fixed portions 3 b when viewed from the axial direction of the rotary shaft 7. A portion 3c is formed, and a cylindrical connector tube portion 3d extending along the axial direction of the rotating shaft 7 outside the yoke 2 is formed in the extending portion 3c. An external connector from a control device (not shown) is fitted into the connector tube portion 3d.
又、図３に示すように、エンドブラケット３におけるヨーク２の開口端２ａとの対向部分の一部である延出部３ｃには、回転軸７の軸方向に凹設された切り欠き凹部３ｅが形成されている。即ち、エンドブラケット３は、切り欠き凹部３ｅを除く部分で前記ヨーク２の開口端２ａと当接して切り欠き凹部３ｅを除く部分で開口端２ａを閉塞する構成とされ、ヨーク２に固定されている。 Further, as shown in FIG. 3, a notch recess 3 e that is recessed in the axial direction of the rotary shaft 7 is formed in the extension portion 3 c that is a part of the end bracket 3 that is opposed to the opening end 2 a of the yoke 2. Is formed. That is, the end bracket 3 is configured to abut against the opening end 2a of the yoke 2 at a portion excluding the notch recess 3e and close the opening end 2a at a portion excluding the notch recess 3e, and is fixed to the yoke 2. Yes.
又、エンドブラケット３における切り欠き凹部３ｅの底部には、延出部３ｃの延びる方向（径方向）に沿って一対（図３中、１つのみ図示）のターミナル収容溝３ｆが形成され、各ターミナル収容溝３ｆにはターミナル１２が収容されている（図３中、部分拡大図参照）。このターミナル１２は、給電用のものであって、その内側端部にはエンドブラケット３に保持される図示しない雑防素子等を介して図示しない給電用ブラシが電気的に接続されることになる。又、ターミナル１２の外側端部には、コネクタ筒部３ｄ内で該コネクタ筒部３ｄに沿って延びる接続端子１２ａが形成され、その接続端子１２ａは、図示しない外部コネクタにおける接続端子に電気的に接続されることになる。 Further, a pair of terminal receiving grooves 3f (only one is shown in FIG. 3) are formed in the bottom of the notch recess 3e in the end bracket 3 along the extending direction (radial direction) of the extending portion 3c. The terminal 12 is accommodated in the terminal accommodating groove 3f (see a partially enlarged view in FIG. 3). The terminal 12 is for power supply, and a power supply brush (not shown) is electrically connected to an inner end of the terminal 12 via a noise prevention element (not shown) held by the end bracket 3. . Further, a connection terminal 12a extending along the connector tube portion 3d is formed in the connector tube portion 3d at the outer end portion of the terminal 12, and the connection terminal 12a is electrically connected to a connection terminal in an external connector (not shown). Will be connected.
又、エンドブラケット３における切り欠き凹部３ｅの底部には、嵌挿凸部３ｇ（図３中、部分拡大図参照）が凸設されている。又、エンドブラケット３における切り欠き凹部３ｅの底部には、延出部３ｃの基端側と先端側で一対の爪挿入孔３ｈが形成されている。 Further, a fitting insertion convex portion 3g (see a partially enlarged view in FIG. 3) is provided on the bottom of the notch concave portion 3e in the end bracket 3. In addition, a pair of claw insertion holes 3h are formed at the bottom of the notch recess 3e in the end bracket 3 on the proximal end side and the distal end side of the extension portion 3c.
そして、切り欠き凹部３ｅには、被収容部材としてのスペーサ部材１３が収容され、スペーサ部材１３に形成された一対の抜け止め用爪１３ａが前記各爪挿入孔３ｈに挿入されて爪挿入孔３ｈの開口縁部に軸方向に係合することでスペーサ部材１３の切り欠き凹部３ｅからの抜けが規制されている。 The notch recess 3e accommodates a spacer member 13 as a member to be accommodated, and a pair of retaining claws 13a formed on the spacer member 13 are inserted into the respective nail insertion holes 3h to form the nail insertion holes 3h. The spacer member 13 is prevented from coming out of the notch recess 3e by engaging the opening edge of the spacer member 13 in the axial direction.
図５に示すように、本実施形態のスペーサ部材１３は、樹脂材よりなり、前記切り欠き凹部３ｅを略埋める形状に形成されている。尚、本実施形態のスペーサ部材１３は、図６に示す後述する回転検出部材５１が不要な仕様のモータ１において回転検出部材５１の替わりに設けられるものである。スペーサ部材１３における前記ヨーク２の開口端２ａとの対向部分には、開口端２ａ側に膨出する対向部１３ｂ（図３中、部分拡大図参照）が形成されている。又、スペーサ部材１３における前記嵌挿凸部３ｇと対応した部分には、該嵌挿凸部３ｇが嵌挿可能な被嵌挿凹部１３ｃ（図３中、部分拡大図参照）が形成されている。尚、本実施形態では、嵌挿凸部３ｇと被嵌挿凹部１３ｃとが軸方向に嵌り合う嵌挿部を構成している。 As shown in FIG. 5, the spacer member 13 of the present embodiment is made of a resin material and has a shape that substantially fills the notch recess 3 e. The spacer member 13 of the present embodiment is provided in place of the rotation detection member 51 in the motor 1 having a specification that does not require the rotation detection member 51 described later shown in FIG. A facing portion 13b (see a partially enlarged view in FIG. 3) that bulges toward the opening end 2a is formed at a portion of the spacer member 13 that faces the opening end 2a of the yoke 2. Further, in the portion of the spacer member 13 corresponding to the fitting insertion convex portion 3g, a fitting insertion concave portion 13c (see a partially enlarged view in FIG. 3) into which the fitting insertion convex portion 3g can be inserted is formed. . In addition, in this embodiment, the insertion insertion convex part 3g and the to-be-inserted insertion recessed part 13c comprise the insertion part which fits in an axial direction.
ここで、前記抜け止め用爪１３ａは、スペーサ部材１３が予め設定された範囲で回転軸７の軸方向に移動可能としながら切り欠き凹部３ｅからのスペーサ部材１３の抜けを規制するように設定されている。 Here, the retaining pawl 13a is set so as to restrict the spacer member 13 from coming out of the notch recess 3e while allowing the spacer member 13 to move in the axial direction of the rotary shaft 7 within a preset range. ing.
即ち、図４に示すように、抜け止め用爪１３ａは、スペーサ部材１３が切り欠き凹部３ｅの最も底側まで到達するように切り欠き凹部３ｅに収容された状態では、爪挿入孔３ｈの開口縁部に軸方向に当接しないように設定されている。より詳しくは、本実施形態の抜け止め用爪１３ａは、図３に示すように、少なくともスペーサ部材１３の対向部１３ｂがヨーク２の開口端２ａに当接する位置までは爪挿入孔３ｈの開口縁部に軸方向に当接しない（軸方向の移動を規制しない）ように設定されている。 That is, as shown in FIG. 4, when the spacer member 13 is accommodated in the notch recess 3e so that the spacer member 13 reaches the bottom of the notch recess 3e, the retaining pawl 13a opens the nail insertion hole 3h. It is set not to contact the edge portion in the axial direction. More specifically, as shown in FIG. 3, the retaining pawl 13 a of the present embodiment has an opening edge of the pawl insertion hole 3 h at least until a position where the facing portion 13 b of the spacer member 13 abuts against the opening end 2 a of the yoke 2. It is set so as not to abut on the part in the axial direction (the movement in the axial direction is not restricted).
又、本実施形態の抜け止め用爪１３ａは、前記爪挿入孔３ｈの内側面と回転軸７の軸方向の直交方向に押圧接触（圧接）するように設定されて押圧接触部を構成している。
次に、本実施形態のモータ１の作用について説明する。
Further, the retaining pawl 13a of the present embodiment is configured so as to be in press contact (pressure contact) with the inner side surface of the claw insertion hole 3h in the direction orthogonal to the axial direction of the rotary shaft 7, thereby constituting a press contact portion Yes.
Next, the operation of the motor 1 of this embodiment will be described.
スペーサ部材１３は、エンドブラケット３をヨーク２に組み付ける前に、切り欠き凹部３ｅに収容され、抜け止め用爪１３ａが爪挿入孔３ｈに挿入されることになる。すると、抜け止め用爪１３ａが爪挿入孔３ｈの開口縁部に軸方向に係合することでスペーサ部材１３の切り欠き凹部３ｅからの抜けが規制される。これにより、例えば、ヨーク２に組み付ける前のエンドブラケット３からスペーサ部材１３の脱落が防止されるため、その取り扱い（搬送等）が容易となる。又、このとき、ターミナル１２は、エンドブラケット３（ターミナル収容溝３ｆの底）とスペーサ部材１３との間に保持されることになる。又、スペーサ部材１３は、抜け止め用爪１３ａが爪挿入孔３ｈの開口縁部に軸方向に当接するまでの予め設定された範囲で軸方向に移動可能とされるとともに、抜け止め用爪１３ａが爪挿入孔３ｈの内側面と押圧接触するため、前記予め設定された範囲内の任意の位置でエンドブラケット３に対して保持させることができる。そして、本実施形態では、エンドブラケット３をヨーク２に組み付ける際に、スペーサ部材１３の対向部１３ｂがヨーク２の開口端２ａに当接された状態となるように、スペーサ部材１３をエンドブラケット３に対して保持させている。 The spacer member 13 is accommodated in the notch recess 3e before the end bracket 3 is assembled to the yoke 2, and the retaining claws 13a are inserted into the claw insertion holes 3h. As a result, the stopper claw 13a is engaged with the opening edge of the claw insertion hole 3h in the axial direction, so that the spacer member 13 is prevented from coming off from the notch recess 3e. Accordingly, for example, the spacer member 13 is prevented from falling off from the end bracket 3 before being assembled to the yoke 2, so that handling (conveyance or the like) becomes easy. At this time, the terminal 12 is held between the end bracket 3 (the bottom of the terminal accommodating groove 3 f) and the spacer member 13. The spacer member 13 can be moved in the axial direction within a preset range until the retaining claw 13a abuts against the opening edge of the claw insertion hole 3h in the axial direction, and the retaining claw 13a. Is in press contact with the inner side surface of the claw insertion hole 3h, and can be held with respect to the end bracket 3 at an arbitrary position within the preset range. In this embodiment, when the end bracket 3 is assembled to the yoke 2, the spacer member 13 is attached to the end bracket 3 so that the facing portion 13 b of the spacer member 13 is in contact with the opening end 2 a of the yoke 2. Is held against.
次に、上記実施の形態の特徴的な効果を以下に記載する。
（１）抜け止め用爪１３ａは、スペーサ部材１３が予め設定された範囲で軸方向に移動可能としながら切り欠き凹部３ｅからのスペーサ部材１３の抜けを規制するように設定されるため、スペーサ部材１３は、予め設定された範囲で軸方向に移動可能とされながらも切り欠き凹部３ｅからの抜けが規制される。そして、スペーサ部材１３はエンドブラケット３と回転軸７の軸方向の直交方向に押圧接触する抜け止め用爪１３ａを有することで、スペーサ部材１３を予め設定された範囲内の任意の位置でエンドブラケット３に対して保持させることができる。よって、スペーサ部材１３の軸方向長さ及び切り欠き凹部３ｅの深さ等の寸法精度を高精度とすることなく、ヨーク２の開口端２ａとスペーサ部材１３（その対向部１３ｂ）とを当接させて保持することができ、その間からの異物の侵入を防止することができる。
Next, the characteristic effects of the above embodiment will be described below.
(1) The retaining claw 13a is set so as to restrict the spacer member 13 from coming out of the notch recess 3e while allowing the spacer member 13 to move in the axial direction within a preset range. 13 is restricted from being removed from the notch recess 3e while being movable in the axial direction within a preset range. The spacer member 13 has a retaining claw 13a that presses and contacts the end bracket 3 and the rotation shaft 7 in the direction orthogonal to the axial direction, so that the spacer member 13 can be placed at any position within a preset range. 3 can be held. Therefore, the opening end 2a of the yoke 2 and the spacer member 13 (the facing portion 13b) are brought into contact with each other without increasing the dimensional accuracy such as the axial length of the spacer member 13 and the depth of the notch recess 3e. It is possible to prevent the intrusion of foreign matters from between them.
（２）ターミナル１２は、エンドブラケット３（ターミナル収容溝３ｆの底）とスペーサ部材１３との間に保持されるため、特に専用のターミナル保持爪等を設けることなくターミナル１２の組み付けを容易としながら、その移動や変形を防止することができる。即ち、エンドブラケット３にターミナル１２を配置し、その後、スペーサ部材１３を組み付けるだけで、ターミナル１２をエンドブラケット３とスペーサ部材１３との間に保持させることができ、その移動や変形を防止することができる。 (2) Since the terminal 12 is held between the end bracket 3 (the bottom of the terminal receiving groove 3f) and the spacer member 13, the terminal 12 can be easily assembled without providing a dedicated terminal holding claw or the like. The movement and deformation can be prevented. That is, the terminal 12 can be held between the end bracket 3 and the spacer member 13 simply by arranging the terminal 12 on the end bracket 3 and then assembling the spacer member 13, thereby preventing the movement and deformation of the terminal 12. Can do.
（３）切り欠き凹部３ｅの底部とスペーサ部材１３には、軸方向に嵌り合う嵌挿部（嵌挿凸部３ｇと被嵌挿凹部１３ｃ）が形成される。よって、スペーサ部材１３が切り欠き凹部３ｅの最も底側まで到達していない位置でエンドブラケット３に対して保持されても（図３参照）、切り欠き凹部３ｅの底部とスペーサ部材１３との間からの異物の侵入を嵌挿部（嵌挿凸部３ｇと被嵌挿凹部１３ｃ）によって防止することができる。 (3) The bottom part of the notch recessed part 3e and the spacer member 13 are formed with an insertion part (an insertion convex part 3g and a fitted insertion concave part 13c) that fit in the axial direction. Therefore, even if the spacer member 13 is held with respect to the end bracket 3 at a position where it does not reach the bottom of the notch recess 3e (see FIG. 3), the space between the bottom of the notch recess 3e and the spacer member 13 The intrusion of foreign matter from can be prevented by the insertion portion (the insertion insertion convex portion 3g and the insertion insertion concave portion 13c).
（４）ヨーク２には、回転軸７の一端側を支持するための軸受５が設けられ、エンドブラケット３には、回転軸７の他端側を支持するための軸受１１が設けられるが、上記構成によってヨーク２に対してエンドブラケット３が傾くことがないので、一対の軸受５，１１が傾いてしまうことが抑えられ、回転軸７を良好に支持することができる。詳しくは、上記構成では、ヨーク２の開口端２ａとスペーサ部材１３とを当接させるためにスペーサ部材１３の軸方向長さをヨーク２の開口端２ａと切り欠き凹部３ｅの底部との間隔よりも僅かに大きく設定する必要がなく、スペーサ部材１３が介在（挟持）されることによってヨーク２に対してエンドブラケット３が傾いてしまうといったことがない。よって、ヨーク２及びエンドブラケット３に設けられる一対の軸受５，１１の軸心同士が傾いてしまうことが抑えられ、回転軸７を良好に支持することができる。 (4) The yoke 2 is provided with a bearing 5 for supporting one end side of the rotating shaft 7, and the end bracket 3 is provided with a bearing 11 for supporting the other end side of the rotating shaft 7, Since the end bracket 3 is not inclined with respect to the yoke 2 by the above configuration, the pair of bearings 5 and 11 are prevented from being inclined, and the rotating shaft 7 can be favorably supported. Specifically, in the above configuration, in order to make the opening end 2a of the yoke 2 abut on the spacer member 13, the axial length of the spacer member 13 is determined by the distance between the opening end 2a of the yoke 2 and the bottom of the notch recess 3e. However, the end bracket 3 is not inclined with respect to the yoke 2 by the interposition (clamping) of the spacer member 13. Therefore, it is possible to prevent the shaft centers of the pair of bearings 5 and 11 provided on the yoke 2 and the end bracket 3 from being inclined, and to support the rotating shaft 7 satisfactorily.
上記実施形態は、以下のように変更してもよい。
・上記実施形態では、切り欠き凹部３ｅに収容保持される被収容部材をスペーサ部材１３としたが、他の被収容部材に変更してもよい。
The above embodiment may be modified as follows.
In the above embodiment, the member to be accommodated and held in the notch recess 3e is the spacer member 13, but may be changed to another member to be accommodated.
例えば、図６に示す回転検出部材５１に変更してもよい。この回転検出部材５１は、スペーサ部材１３の抜け止め用爪１３ａと同様の抜け止め用爪５２と、スペーサ部材１３の対向部１３ｂと同様の対向部５３と、スペーサ部材１３の被嵌挿凹部１３ｃと同様の被嵌挿凹部（図示略）とが形成された樹脂部５４を有する。又、回転検出部材５１は、樹脂部５４に固定され回転子６の回転を検出するためのホールＩＣが実装された検出回路基板５５と、樹脂部５４に一部が埋設され検出回路基板５５からの信号を外部に伝達するためのセンサターミナル５６とを有する。尚、センサターミナル５６の接続端子は、前記給電用のターミナル１２の接続端子１２ａと平行に配置され、図示しない外部コネクタにおける接続端子に電気的に接続されることになる。このようにすると、回転検出部材５１を備えたモータにおいて上記実施形態の効果と同様の効果を得ることができる。即ち、上記実施形態では、回転検出部材５１が不要な仕様のモータ１であって、切り欠き凹部３ｅのスペースを埋めるためのスペーサ部材１３を備えたモータ１に具体化したが、回転検出部材５１を備えたモータに具体化しても同様の効果を得ることができる。 For example, you may change to the rotation detection member 51 shown in FIG. The rotation detecting member 51 includes a retaining pawl 52 similar to the retaining pawl 13 a of the spacer member 13, an opposing portion 53 similar to the opposing portion 13 b of the spacer member 13, and a fitting insertion recess 13 c of the spacer member 13. The resin part 54 in which the same insertion insertion recessed part (not shown) was formed. The rotation detecting member 51 is fixed to the resin portion 54 and mounted with a detection circuit board 55 on which a Hall IC for detecting the rotation of the rotor 6 is mounted, and a part of the rotation detection member 51 is embedded in the resin portion 54 from the detection circuit board 55. And a sensor terminal 56 for transmitting the above signal to the outside. The connection terminal of the sensor terminal 56 is arranged in parallel with the connection terminal 12a of the power supply terminal 12, and is electrically connected to a connection terminal of an external connector (not shown). If it does in this way, the effect similar to the effect of the said embodiment can be acquired in the motor provided with the rotation detection member 51. FIG. That is, in the above embodiment, the rotation detection member 51 is embodied in the motor 1 having a specification that does not require the rotation detection member 51 and includes the spacer member 13 for filling the space of the notch recess 3e. The same effect can be obtained even if it is embodied in a motor provided with.
・上記実施形態では、ターミナル１２は、エンドブラケット３（ターミナル収容溝３ｆの底）とスペーサ部材１３との間に保持されるとしたが、これに限定されず、例えば、専用のターミナル保持爪等をエンドブラケットに設けて別途保持させてもよい。 In the above embodiment, the terminal 12 is held between the end bracket 3 (the bottom of the terminal receiving groove 3f) and the spacer member 13. However, the present invention is not limited to this. For example, a dedicated terminal holding claw or the like May be provided on the end bracket and held separately.
・上記実施形態では、切り欠き凹部３ｅの底部とスペーサ部材１３には、軸方向に嵌り合う嵌挿部（嵌挿凸部３ｇと被嵌挿凹部１３ｃ）が形成されるとしたが、これに限定されず、嵌挿部が形成されていない構成としてもよい。又、上記実施形態では、切り欠き凹部３ｅに嵌挿凸部３ｇを設け、スペーサ部材１３に被嵌挿凹部１３ｃを設けたが、逆に、切り欠き凹部３ｅに被嵌挿凹部を設け、スペーサ部材１３に嵌挿凸部を設けてもよい。 In the above embodiment, the bottom portion of the notch recess 3e and the spacer member 13 are formed with the fitting insertion portions (the fitting projection 3g and the fitting insertion recess 13c) that fit in the axial direction. It is not limited and it is good also as a structure by which the insertion part is not formed. Moreover, in the said embodiment, although the insertion insertion convex part 3g was provided in the notch recessed part 3e and the insertion insertion recessed part 13c was provided in the spacer member 13, conversely, the insertion insertion recessed part was provided in the notch recessed part 3e, and spacer The member 13 may be provided with an insertion protrusion.
・上記実施形態では、エンドブラケット３と回転軸７の軸方向の直交方向に押圧接触する押圧接触部を抜け止め用爪１３ａとしたが、これに限定されず、他の部分に押圧接触部を設けてもよい。即ち、押圧接触部は、被収容部材（スペーサ部材１３や回転検出部材５１）が切り欠き凹部３ｅに収容された際に、被収容部材が振動等で移動してしまわない程度に押圧接触（圧接）すればよく、例えば、被収容部材の全体が切り欠き凹部３ｅに軽圧入される構成としてもよい。 In the above embodiment, the pressing contact portion that press-contacts in the direction orthogonal to the axial direction of the end bracket 3 and the rotating shaft 7 is the retaining claw 13a. However, the present invention is not limited to this, and the pressing contact portion is provided in other portions. It may be provided. That is, the pressing contact portion is pressed to the extent that the accommodated member (the spacer member 13 or the rotation detecting member 51) is not moved by vibration or the like when the accommodated member (the spacer member 13 or the rotation detecting member 51) is accommodated in the notch recess 3e. For example, the entire member to be accommodated may be lightly press-fitted into the notch recess 3e.
２…ヨーク、２ａ…開口端、３…エンドブラケット、３ｅ…切り欠き凹部、３ｇ…嵌挿部の一部を構成する嵌挿凸部、５，１１…軸受、６…回転子、７…回転軸、１２…ターミナル、１３…スペーサ部材（被収容部材）、１３ａ，５２…抜け止め用爪、１３ｃ…嵌挿部の一部を構成する被嵌挿凹部、５１…回転検出部材（被収容部材）。 2 ... Yoke, 2a ... Open end, 3 ... End bracket, 3e ... Notch recess, 3g ... Fitting insertion convex part constituting part of the insertion part, 5, 11 ... Bearing, 6 ... Rotor, 7 ... Rotation Shaft, 12 ... terminal, 13 ... spacer member (contained member), 13a, 52 ... retaining claw, 13c ... fitted insertion recess constituting a part of the fitted insertion portion, 51 ... rotation detection member (contained member) ).
Claims (5)
前記ヨークの開口端との対向部分の一部に前記回転子の軸方向に凹設された切り欠き凹部が形成され、該切り欠き凹部を除く対向部分が前記ヨークの開口端を略閉塞するように固定されるエンドブラケットと、
前記切り欠き凹部に収容され、抜け止め用爪によって前記切り欠き凹部からの抜けが規制される被収容部材と
を備えたモータであって、
前記抜け止め用爪は、前記被収容部材が前記ヨークの開口端に当接する位置までは該被収容部材が軸方向に移動可能としながら前記切り欠き凹部からの前記被収容部材の抜けを規制するように設定されており、
前記抜け止め用爪が前記被収容部材の軸方向の移動を規制した状態において、該被収容部材は前記ヨークの開口端に当接しており、
前記抜け止め用爪は、前記エンドブラケットと前記軸方向の直交方向に押圧接触する押圧接触部を構成することを特徴とするモータ。 A substantially bottomed cylindrical yoke that houses the rotor;
A notch recess recessed in the axial direction of the rotor is formed in a part of a portion facing the opening end of the yoke, and the facing portion excluding the notch recess substantially closes the opening end of the yoke. An end bracket fixed to the
A motor that is housed in the notch recess and has a member to be accommodated that is prevented from coming out of the notch recess by a retaining claw;
The retaining claw regulates the removal of the member to be received from the notch recess while allowing the member to be moved in the axial direction until the member contacts the opening end of the yoke. is set so as to,
In a state in which the retaining claws restrict movement of the accommodated member in the axial direction, the accommodated member is in contact with the opening end of the yoke,
The motor according to claim 1, wherein the retaining pawl constitutes a pressing contact portion that presses and contacts the end bracket in a direction orthogonal to the axial direction.
前記エンドブラケットはターミナルが配設されるものであって、該ターミナルは、前記エンドブラケットと前記被収容部材との間に保持されることを特徴とするモータ。 The motor according to claim 1,
The end bracket is provided with a terminal, and the terminal is held between the end bracket and the member to be accommodated.
前記切り欠き凹部の底部と前記被収容部材には、軸方向に嵌り合う嵌挿部が形成されたことを特徴とするモータ。 The motor according to claim 1 or 2,
The motor according to claim 1, wherein an insertion portion that fits in an axial direction is formed on a bottom portion of the notch recess and the member to be accommodated.
前記ヨークには、前記回転子の回転軸の一端側を支持するための軸受が設けられ、
前記エンドブラケットには、前記回転子の回転軸の他端側を支持するための軸受が設けられたことを特徴とするモータ。 The motor according to any one of claims 1 to 3,
The yoke is provided with a bearing for supporting one end side of the rotating shaft of the rotor,
The motor according to claim 1, wherein the end bracket is provided with a bearing for supporting the other end of the rotating shaft of the rotor.
前記被収容部材は、前記回転子の回転を検出するための回転検出部材、又は、前記切り欠き凹部を埋めるためのスペーサ部材であることを特徴とするモータ。 The motor according to any one of claims 1 to 4,
The motor is characterized in that the member to be accommodated is a rotation detection member for detecting rotation of the rotor or a spacer member for filling the notch recess.
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| JP2012235775A JP6026850B2 (en) | 2012-10-25 | 2012-10-25 | motor |
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| JPH0534210Y2 (en) * | 1986-07-15 | 1993-08-30 | ||
| JPH0736575U (en) * | 1991-08-07 | 1995-07-04 | アスモ株式会社 | Small rotating electric machine |
| JP2002064959A (en) * | 2000-08-17 | 2002-02-28 | Asmo Co Ltd | Brush holding structure and motor |
| JP5138337B2 (en) * | 2007-10-29 | 2013-02-06 | アスモ株式会社 | motor |
| JP5280932B2 (en) * | 2009-05-08 | 2013-09-04 | アスモ株式会社 | motor |
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