JP6801373B2 - Brush holder device - Google Patents

Brush holder device Download PDF

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JP6801373B2
JP6801373B2 JP2016213037A JP2016213037A JP6801373B2 JP 6801373 B2 JP6801373 B2 JP 6801373B2 JP 2016213037 A JP2016213037 A JP 2016213037A JP 2016213037 A JP2016213037 A JP 2016213037A JP 6801373 B2 JP6801373 B2 JP 6801373B2
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holder member
rod
shaped core
press
held
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JP2018074785A (en
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謙吾 池谷
謙吾 池谷
謙太 後藤
謙太 後藤
和陽 松ヶ谷
和陽 松ヶ谷
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Denso Corp
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Denso Corp
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Description

本発明は、モータのブラシホルダ装置に関するものである。 The present invention relates to a brush holder device for a motor.

従来、モータとしては、例えば、回転軸を回転駆動するモータ本体と、前記回転軸の回転を減速する減速部と、モータ本体のモータケースと減速部のギヤハウジングとに亘って保持されたブラシホルダ装置とを備えたものがある(例えば、特許文献1参照)。そして、ブラシホルダ装置は、樹脂製のホルダ部材に、給電用ブラシや、棒状コアの外周に巻線が巻回されてなる長尺状のチョークコイル等が保持されてなる。 Conventionally, as a motor, for example, a brush holder held over a motor body that rotationally drives a rotating shaft, a deceleration unit that decelerates the rotation of the rotating shaft, and a motor case of the motor body and a gear housing of the deceleration unit. Some are equipped with an apparatus (see, for example, Patent Document 1). The brush holder device is formed by holding a power feeding brush, a long choke coil or the like in which a winding is wound around the outer circumference of a rod-shaped core, or the like, in a resin holder member.

特開2015−91159号公報JP-A-2015-91159

ところで、上記のようなブラシホルダ装置では、チョークコイルは、例えば、その外周面(巻線の外側)がホルダ部材に形成された押圧片によって押圧されつつ挟持されることで保持されている。即ち、ホルダ部材には、壁面と、該壁面に対する距離が変わるように可撓性を有する押圧片とが形成されており、外力を受けていない(撓ませていない)押圧片と壁面との距離はチョークコイルの外径よりも小さく設定されており、壁面と押圧片との間にチョークコイルの外周面が挟持されるようになっている。 By the way, in the brush holder device as described above, the choke coil is held by, for example, its outer peripheral surface (outside of the winding) being pressed and sandwiched by a pressing piece formed on the holder member. That is, the holder member is formed with a wall surface and a pressing piece having flexibility so that the distance to the wall surface changes, and the distance between the pressing piece not receiving an external force (not bending) and the wall surface. Is set smaller than the outer diameter of the choke coil so that the outer peripheral surface of the choke coil is sandwiched between the wall surface and the pressing piece.

しかしながら、上記のようなブラシホルダ装置では、チョークコイルを構成する巻線の線径(太さ)やチョークコイルの外径を変更しようとすると、チョークコイルを良好に保持させるために壁面と押圧片とを含むホルダ部材の設計を変更する必要が生じてしまうという問題があった。 However, in the brush holder device as described above, when the wire diameter (thickness) of the windings constituting the choke coil or the outer diameter of the choke coil is changed, the wall surface and the pressing piece are pressed in order to hold the choke coil well. There is a problem that it becomes necessary to change the design of the holder member including the above.

本発明は上記問題点を解消するためになされたものであって、その目的は、ホルダ部材の設計を変更することなく巻線の線径やチョークコイルの外径を変更することができるブラシホルダ装置を提供することにある。 The present invention has been made to solve the above problems, and an object of the present invention is to change the wire diameter of the winding and the outer diameter of the choke coil without changing the design of the holder member. To provide the device.

上記課題を解決するブラシホルダ装置は、給電用ブラシと、棒状コアの外周に巻線が巻回されてなるチョークコイルと、前記給電用ブラシ及び前記チョークコイルが保持されたホルダ部材とを備えたブラシホルダ装置であって、前記チョークコイルは、前記棒状コアが前記ホルダ部材に直接保持されることで該ホルダ部材に保持されているとともに、前記棒状コアは、前記ホルダ部材に圧入状態とされており、前記棒状コアは、前記ホルダ部材に対して傾動可能に保持される。 The brush holder device for solving the above problems includes a power feeding brush, a choke coil in which a winding is wound around the outer periphery of the rod-shaped core, and a holder member in which the power feeding brush and the choke coil are held. In the brush holder device, the choke coil is held by the holder member by directly holding the rod-shaped core by the holder member, and the rod-shaped core is press-fitted into the holder member. cage, the bar core, Ru is tiltably held against the holder member.

同構成によれば、棒状コアの外周に巻線が巻回されてなるチョークコイルは、棒状コアがホルダ部材に直接保持されることで該ホルダ部材に保持されるため、ホルダ部材の設計を変更することなく、巻線の線径(太さ)やチョークコイルの外径を変更することができる。 According to the same configuration, the choke coil in which the winding is wound around the outer circumference of the rod-shaped core is held by the holder member by directly holding the rod-shaped core by the holder member, so that the design of the holder member is changed. The wire diameter (thickness) of the winding and the outer diameter of the choke coil can be changed without doing so.

構成によれば、棒状コアは、ホルダ部材に圧入固定状態とされることで保持されるため、棒状コアをホルダ部材に容易に保持させることができる。 According to the same configuration, since the rod-shaped core is held by being press-fitted and fixed to the holder member, the rod-shaped core can be easily held by the holder member.

上記ブラシホルダ装置であって、前記棒状コアは、前記ホルダ部材の被圧入部に圧入される圧入部が球面形状とされることで、前記ホルダ部材に対して傾動可能に保持されることが好ましい。 In the brush holder device, it is preferable that the rod-shaped core is held so as to be tiltable with respect to the holder member because the press-fitting portion to be press-fitted into the press-fitting portion of the holder member has a spherical shape. ..

同構成によれば、棒状コアは、ホルダ部材の被圧入部に圧入される圧入部が球面形状とされることで、ホルダ部材に対して傾動可能に保持されるため、例えば、棒状コアをホルダ部材に圧入した後に最適な配置角度となるように傾動させることができる。 According to the same configuration, in the rod-shaped core, the press-fitting portion to be press-fitted into the press-fitting portion of the holder member has a spherical shape, so that the rod-shaped core is held so as to be tiltable with respect to the holder member. After press-fitting into the member, it can be tilted so as to have an optimum arrangement angle.

上記ブラシホルダ装置であって、前記棒状コアは、その長手方向がモータ回転軸線方向に対して傾斜して保持されることが好ましい。
同構成によれば、棒状コアは、その長手方向がモータ回転軸線方向に対して傾斜して保持されるため、ブラシホルダ装置のモータ回転軸線方向の小型化を図ることが可能となる。
In the brush holder device, it is preferable that the rod-shaped core is held so that its longitudinal direction is inclined with respect to the direction of the motor rotation axis.
According to the same configuration, since the rod-shaped core is held so that its longitudinal direction is inclined with respect to the motor rotation axis direction, it is possible to reduce the size of the brush holder device in the motor rotation axis direction.

本発明のブラシホルダ装置では、ホルダ部材の設計を変更することなく巻線の線径やチョークコイルの外径を変更することができる。 In the brush holder device of the present invention, the wire diameter of the winding and the outer diameter of the choke coil can be changed without changing the design of the holder member.

一実施形態におけるモータの平面図。Top view of the motor in one embodiment. 一実施形態におけるブラシホルダ装置の一部拡大模式図。Partially enlarged schematic view of the brush holder device in one embodiment. 一実施形態におけるブラシホルダ装置を説明するための一部分解模式図。A partially disassembled schematic diagram for explaining the brush holder device in one embodiment. 別例におけるブラシホルダ装置の一部拡大模式図。Partially enlarged schematic view of the brush holder device in another example. 別例におけるブラシホルダ装置を説明するための一部分解模式図。A partially disassembled schematic diagram for explaining a brush holder device in another example. 別例におけるブラシホルダ装置の一部拡大模式図。Partially enlarged schematic view of the brush holder device in another example. 別例におけるブラシホルダ装置を説明するための一部分解模式図。A partially disassembled schematic diagram for explaining a brush holder device in another example.

以下、モータの一実施形態を図1〜図3に従って説明する。
図1に示すように、本実施形態のモータ1は、回転子2の回転軸3を回転駆動するモータ本体4と、回転軸3の回転を減速する減速部5とを備えている。
Hereinafter, one embodiment of the motor will be described with reference to FIGS. 1 to 3.
As shown in FIG. 1, the motor 1 of the present embodiment includes a motor main body 4 that rotationally drives the rotating shaft 3 of the rotor 2, and a speed reducing unit 5 that decelerates the rotation of the rotating shaft 3.

モータ本体4のモータケースであるヨークハウジング6は、導電性の金属材料よりなり、有底筒状に形成され、その内周面には永久磁石7が固定されている。ヨークハウジング6の開口部にはフランジ6aが形成され、そのフランジ6aは、減速部5のギヤハウジング8の固定部8aとボルト9にて固定されている。 The yoke housing 6, which is the motor case of the motor body 4, is made of a conductive metal material and is formed in a bottomed tubular shape, and a permanent magnet 7 is fixed to the inner peripheral surface thereof. A flange 6a is formed in the opening of the yoke housing 6, and the flange 6a is fixed to the fixing portion 8a of the gear housing 8 of the reduction gear 5 by a bolt 9.

減速部5のギヤハウジング8は、合成樹脂材料よりなり、前記ヨークハウジング6と固定される前記固定部8aと、固定部8aから前記回転軸3の軸線方向に延びたウォーム収容部8bと、該ウォーム収容部8bの側方(図1において右方)に形成されたホイール収容部8cとを有する。そして、ウォーム収容部8bには、前記回転軸3の先端部とクラッチ11を介して連結されるウォーム軸12が収容され、ホイール収容部8cには、ウォーム軸12と噛合されるウォームホイール13が収容されている。ウォームホイール13の軸中心には出力軸14が設けられ、該出力軸14は、外部負荷と駆動連結されることになる。 The gear housing 8 of the speed reduction unit 5 is made of a synthetic resin material, and includes the fixing portion 8a fixed to the yoke housing 6, a worm accommodating portion 8b extending from the fixing portion 8a in the axial direction of the rotating shaft 3, and the like. It has a wheel housing portion 8c formed on the side (right side in FIG. 1) of the worm housing portion 8b. A worm shaft 12 connected to the tip of the rotating shaft 3 via a clutch 11 is housed in the worm housing portion 8b, and a worm wheel 13 meshed with the worm shaft 12 is housed in the wheel housing portion 8c. It is contained. An output shaft 14 is provided at the center of the shaft of the worm wheel 13, and the output shaft 14 is driven and connected to an external load.

また、モータ1は、ヨークハウジング6とギヤハウジング8とに亘って保持されたブラシホルダ装置21を備えている。
ブラシホルダ装置21は、樹脂製のホルダ部材22に、前記回転子2の整流子23に摺接される給電用ブラシ24や、該給電用ブラシ24と外部接続端子25との間に電気的に接続されるチョークコイル26等が保持されてなる。
Further, the motor 1 includes a brush holder device 21 held over the yoke housing 6 and the gear housing 8.
The brush holder device 21 electrically attaches the resin holder member 22 to the feeding brush 24 which is slidably contacted with the commutator 23 of the rotor 2 and between the feeding brush 24 and the external connection terminal 25. The choke coil 26 and the like to be connected are held.

ここで、図2及び図3に示すように、チョークコイル26は、長尺状の棒状コア31の外周に巻線32が巻回されてなる。そして、本実施形態のチョークコイル26は、棒状コア31が前記ホルダ部材22に直接保持されることで該ホルダ部材22に保持されている。 Here, as shown in FIGS. 2 and 3, the choke coil 26 is formed by winding a winding 32 around the outer circumference of a long rod-shaped core 31. The choke coil 26 of the present embodiment is held by the holder member 22 by directly holding the rod-shaped core 31 by the holder member 22.

詳しくは、本実施形態のチョークコイル26の棒状コア31は、ホルダ部材22に圧入状態とされることで保持されている。即ち、棒状コア31は、その一端部に圧入部31aを有し、ホルダ部材22は前記圧入部31aが圧入される被圧入部22aを有している。また、本実施形態の棒状コア31は、圧入部31aが球面形状とされることで、ホルダ部材22に対して傾動可能に保持されている。なお、被圧入部22aは、前記圧入部31aが圧入可能な球面凹形状とされている。また、本実施形態の棒状コア31(チョークコイル26)は、その長手方向がモータ回転軸線方向(図1中、回転軸3の軸線に沿った方向であって、図2中、上下方向)に沿うように(平行に)保持されている。 Specifically, the rod-shaped core 31 of the choke coil 26 of the present embodiment is held by being press-fitted into the holder member 22. That is, the rod-shaped core 31 has a press-fitting portion 31a at one end thereof, and the holder member 22 has a press-fitting portion 22a into which the press-fitting portion 31a is press-fitted. Further, the rod-shaped core 31 of the present embodiment is held so as to be tiltable with respect to the holder member 22 because the press-fitting portion 31a has a spherical shape. The press-fitting portion 22a has a spherical concave shape that allows the press-fitting portion 31a to be press-fitted. Further, the rod-shaped core 31 (choke coil 26) of the present embodiment has its longitudinal direction in the direction of the motor rotation axis (the direction along the axis of the rotation axis 3 in FIG. 1, and the vertical direction in FIG. 2). It is held along (parallel).

次に、上記のように構成されたモータ1(ブラシホルダ装置21)の作用について説明する。
外部電源からモータ1の外部接続端子25に電源が供給されると、チョークコイル26及び給電用ブラシ24を介して整流子23(更には回転子2の巻線)に電源が供給され、回転子2(回転軸3)が回転駆動される。すると、回転軸3と一体的にウォーム軸12が回転し、ウォーム軸12の回転に伴って(減速されて)ウォームホイール13及び出力軸14が回転し、該出力軸14から外部負荷に動力が伝達される。このとき、給電用ブラシ24が整流子23に摺接することで発生する電気ノイズはチョークコイル26により低減される。
Next, the operation of the motor 1 (brush holder device 21) configured as described above will be described.
When power is supplied from the external power supply to the external connection terminal 25 of the motor 1, power is supplied to the commutator 23 (further, the winding of the rotor 2) via the choke coil 26 and the feeding brush 24, and the rotor 2 (rotary shaft 3) is rotationally driven. Then, the worm shaft 12 rotates integrally with the rotating shaft 3, and the worm wheel 13 and the output shaft 14 rotate (decelerated) with the rotation of the worm shaft 12, and power is applied to the external load from the output shaft 14. Be transmitted. At this time, the electric noise generated by the power feeding brush 24 sliding in contact with the commutator 23 is reduced by the choke coil 26.

次に、上記実施形態の効果を以下に記載する。
(1)棒状コア31の外周に巻線32が巻回されてなるチョークコイル26は、棒状コア31がホルダ部材22に直接保持されることで該ホルダ部材22に保持されるため、ホルダ部材22の設計を変更することなく、巻線32の線径(太さ)やチョークコイル26の外径を変更することができる。
Next, the effects of the above embodiment will be described below.
(1) The choke coil 26 in which the winding 32 is wound around the outer circumference of the rod-shaped core 31 is held by the holder member 22 by directly holding the rod-shaped core 31 by the holder member 22, so that the holder member 22 The wire diameter (thickness) of the winding 32 and the outer diameter of the choke coil 26 can be changed without changing the design of the above.

(2)棒状コア31は、ホルダ部材22に圧入固定状態とされることで保持されるため、棒状コア31をホルダ部材22に容易に保持させることができる。
(3)棒状コア31は、ホルダ部材22の被圧入部22aに圧入される圧入部31aが球面形状とされることで、ホルダ部材22に対して傾動可能に保持されるため、例えば、棒状コア31をホルダ部材22に圧入した後に最適な配置角度となるように傾動させることができる。
(2) Since the rod-shaped core 31 is held by being press-fitted and fixed to the holder member 22, the rod-shaped core 31 can be easily held by the holder member 22.
(3) The rod-shaped core 31 is held so as to be tiltable with respect to the holder member 22 because the press-fitting portion 31a to be press-fitted into the press-fitting portion 22a of the holder member 22 has a spherical shape. After the 31 is press-fitted into the holder member 22, it can be tilted so as to have an optimum arrangement angle.

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、棒状コア31(チョークコイル26)は、その長手方向がモータ回転軸線方向(図1中、回転軸3の軸線に沿った方向であって、図2中、上下方向)に沿うように(平行に)保持されるとしたが、これに限定されない。
The above embodiment may be modified as follows.
-In the above embodiment, the longitudinal direction of the rod-shaped core 31 (choke coil 26) is in the direction of the motor rotation axis (the direction along the axis of the rotation axis 3 in FIG. 1, and the vertical direction in FIG. 2). It is said that it is held along (parallel), but it is not limited to this.

例えば、図4に示すように、棒状コア31(チョークコイル26)は、その長手方向がモータ回転軸線方向(図1中、回転軸3の軸線に沿った方向であって、図4中、上下方向)に対して傾斜して保持されるようにしてもよい。このようにすると、ブラシホルダ装置21のモータ回転軸線方向の小型化を図ることが可能となる。 For example, as shown in FIG. 4, the longitudinal direction of the rod-shaped core 31 (choke coil 26) is the direction of the motor rotation axis (the direction along the axis of the rotation axis 3 in FIG. 1 and up and down in FIG. 4). It may be held at an angle with respect to the direction). In this way, it is possible to reduce the size of the brush holder device 21 in the direction of the motor rotation axis.

・上記実施形態では、被圧入部22aは、ホルダ部材22から単に凹設された形状としたが、圧入部31aが圧入(保持)可能であれば、他の形状に変更してもよい。
例えば、図5に示すように、ホルダ部材22に形成された半球形状の凹部22bと該凹部22bの周囲から立設されて圧入部31aの上部を覆う複数(この例では4つであって2つのみ図示)の爪部22cとで被圧入部22dを構成してもよい。
-In the above embodiment, the press-fitted portion 22a is simply recessed from the holder member 22, but may be changed to another shape as long as the press-fitted portion 31a can be press-fitted (held).
For example, as shown in FIG. 5, a plurality of hemispherical recesses 22b formed in the holder member 22 and a plurality of hemispherical recesses 22b erected from the periphery of the recesses 22b to cover the upper part of the press-fitting portion 31a (in this example, four and two). The press-fitted portion 22d may be formed by the claw portion 22c (shown only for one).

・上記実施形態では、棒状コア31は、ホルダ部材22に圧入固定状態とされることで保持されるとしたが、これに限定されず、棒状コア31がホルダ部材22に直接保持されれば、他の構成に変更してもよい。 -In the above embodiment, the rod-shaped core 31 is held by being press-fitted and fixed to the holder member 22, but the present invention is not limited to this, and if the rod-shaped core 31 is directly held by the holder member 22, It may be changed to another configuration.

例えば、図6及び図7に示すように、棒状コア41は、インサート成形によってホルダ部材22に一体的に固定された構成としてもよい。即ち、棒状コア41は、その一端部にホルダ部材22に埋設されることになるインサート部41aを有している。この例のインサート部41aは、端部に向かうほど外径が大きくなる形状に形成されている。そして、まず、図7に示すように、インサート部41aがホルダ部材22に埋設されるようにインサート成形を行うことで棒状コア41がホルダ部材22に一体的に固定された状態として、後に巻線42を棒状コア41に圧入(外嵌)することでチョークコイル43を保持させてもよい。 For example, as shown in FIGS. 6 and 7, the rod-shaped core 41 may be integrally fixed to the holder member 22 by insert molding. That is, the rod-shaped core 41 has an insert portion 41a to be embedded in the holder member 22 at one end thereof. The insert portion 41a of this example is formed in a shape in which the outer diameter increases toward the end portion. Then, first, as shown in FIG. 7, the rod-shaped core 41 is integrally fixed to the holder member 22 by performing insert molding so that the insert portion 41a is embedded in the holder member 22, and the winding is performed later. The choke coil 43 may be held by press-fitting (outer fitting) the 42 into the rod-shaped core 41.

・上記実施形態では、棒状コア31は、ホルダ部材22の被圧入部22aに圧入される圧入部31aが球面形状とされることで、ホルダ部材22に対して傾動可能に保持されるとしたが、これに限定されず、非球面形状の圧入部を有して棒状コアがホルダ部材に傾動不能に圧入される構成としてもよい。 -In the above embodiment, the rod-shaped core 31 is held so as to be tiltable with respect to the holder member 22 because the press-fitting portion 31a press-fitted into the press-fitting portion 22a of the holder member 22 has a spherical shape. However, the present invention may be limited to this, and the rod-shaped core may be press-fitted into the holder member so as not to be tilted by having an aspherical shape press-fitting portion.

22…ホルダ部材、22a,22d…被圧入部、24…給電用ブラシ、26,43…チョークコイル、31,41…棒状コア、31a…圧入部、32,42…巻線。 22 ... Holder member, 22a, 22d ... Press-fitted portion, 24 ... Power feeding brush, 26,43 ... Choke coil, 31,41 ... Rod-shaped core, 31a ... Press-fitted portion, 32,42 ... Winding.

Claims (3)

給電用ブラシと、
棒状コアの外周に巻線が巻回されてなるチョークコイルと、
前記給電用ブラシ及び前記チョークコイルが保持されたホルダ部材と
を備えたブラシホルダ装置であって、
前記チョークコイルは、前記棒状コアが前記ホルダ部材に直接保持されることで該ホルダ部材に保持されているとともに、
前記棒状コアは、前記ホルダ部材に圧入状態とされており、
前記棒状コアは、前記ホルダ部材に対して傾動可能に保持されたことを特徴とするブラシホルダ装置。
Power supply brush and
A choke coil with windings wound around the outer circumference of the rod-shaped core,
A brush holder device including the power feeding brush and a holder member holding the choke coil.
The choke coil is held by the holder member by directly holding the rod-shaped core by the holder member, and is also held by the holder member .
The rod-shaped core is press-fitted into the holder member.
A brush holder device characterized in that the rod-shaped core is held so as to be tiltable with respect to the holder member .
請求項に記載のブラシホルダ装置であって、
前記棒状コアは、前記ホルダ部材の被圧入部に圧入される圧入部が球面形状とされることで、前記ホルダ部材に対して傾動可能に保持されたことを特徴とするブラシホルダ装置。
The brush holder device according to claim 1 .
The rod-shaped core is a brush holder device characterized in that the press-fitting portion to be press-fitted into the press-fitting portion of the holder member has a spherical shape and is held so as to be tiltable with respect to the holder member.
請求項1又は2に記載のブラシホルダ装置であって、
前記棒状コアは、その長手方向がモータ回転軸線方向に対して傾斜して保持されたことを特徴とするブラシホルダ装置。
The brush holder device according to claim 1 or 2 .
The rod-shaped core is a brush holder device whose longitudinal direction is inclined and held with respect to the direction of the rotation axis of the motor.
JP2016213037A 2016-10-31 2016-10-31 Brush holder device Active JP6801373B2 (en)

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