JP2013070501A - Coreless motor with flat brush - Google Patents

Coreless motor with flat brush Download PDF

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Publication number
JP2013070501A
JP2013070501A JP2011206913A JP2011206913A JP2013070501A JP 2013070501 A JP2013070501 A JP 2013070501A JP 2011206913 A JP2011206913 A JP 2011206913A JP 2011206913 A JP2011206913 A JP 2011206913A JP 2013070501 A JP2013070501 A JP 2013070501A
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Prior art keywords
brush holder
brush
output side
bearing
output
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JP2011206913A
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JP5948560B2 (en
Inventor
Atsushi Sawamura
篤 澤村
Kazuo Toya
和雄 遠矢
Keigo Matsumoto
圭吾 松本
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Panasonic Corp
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Panasonic Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a flat motor with a brush used as an electric component capable of reducing the thickness, the weight, and the cost.SOLUTION: The motor with a brush includes: plural brush storing portions disposed in a brush holder 8; and a bearing mechanism disposed at the center of the brush holder. The bearing mechanism has an oil-retaining bearing 4a press-fitted at the anti-output side to eliminate the thrust load from a rotor, and positioning projections 8a are disposed to eliminate set screws 12; thereby an anti-output side bracket 7 is formed in a simple form of a doughnut shape. The weight and the cost are reduced by eliminating burring for tightening.

Description

本発明は、自動車等のラジエータ冷却ファンやカーエアコン用コンデンサ冷却ファン等の電装分野に使用されるモータに関する。   The present invention relates to a motor used in the field of electrical equipment such as a radiator cooling fan for automobiles and a condenser cooling fan for car air conditioners.

近年、自動車用ファンモータは低燃費を実現する為の軽量化、限られたスペースの中での薄型化、最後に低コスト化が要求されている。従来、ファンモータはブラシ付モータが使用され、軽量、低コスト化のためにブラシホルダーは樹脂成型品が知られている。なお、従来のコアレスモータにおいては図２のように反出力側ブラケット７に軸受機構を設ける構造が知られている（例えば、特許文献１参照）。また、シリンダータイプのモータにおいては軽量化、防水性を向上させるため、ねじを不要とし、ブラシホルダーユニット、ベースと新規部品を具備した構造が知られている（例えば、特許文献２参照）。   In recent years, automobile fan motors are required to be light in weight to realize low fuel consumption, to be thin in a limited space, and finally to be low in cost. Conventionally, a brush motor is used as a fan motor, and a resin molded product is known as a brush holder for light weight and low cost. In the conventional coreless motor, a structure in which a bearing mechanism is provided on the non-output side bracket 7 as shown in FIG. 2 is known (see, for example, Patent Document 1). In addition, a cylinder type motor is known that has a brush holder unit, a base, and a new part (see, for example, Patent Document 2) that eliminates the need for screws in order to reduce weight and improve waterproofness.

特開２００６−１４９０１９号公報JP 2006-149019 A 実公昭５８−４０７６４号公報Japanese Utility Model Publication No. 58-40764

しかしながら、特許文献２の構成では、ねじを不要とするが、ヨークとのかしめを必要とし、さらに新規部品を必要とするため、軽量化、低コスト化は困難という課題を有していた。   However, the configuration of Patent Document 2 does not require a screw, but requires caulking with a yoke and further requires a new part, and thus has a problem that it is difficult to reduce the weight and cost.

本発明は上記問題点の工数、新規部品を解決するものであり、ブラシホルダーに軸受機構を構成し、ブラケットとの接続機構を備え、前記ブラシホルダーの固定用ねじを不要とし、ブラケット形状を簡素化して、軽量化、低コスト化を目的とする。   The present invention solves the above-mentioned problems in man-hours and new parts, and comprises a bearing mechanism in the brush holder, a connection mechanism with the bracket, eliminates the need for fixing screws for the brush holder, and simplifies the bracket shape. To reduce weight and cost.

前記従来の課題を解決するために、本発明はブラシホルダーの中心部に軸受機構を配設し、軸受をボールベアリグから含油軸受に変更して低コスト化を図るとともに前記ブラシホルダーに含油軸受を圧入する事でブラシホルダーにロータからのスラスト荷重が無くなるため、反出力側ブラケットとの固定用ねじが削減でき、軽量化、低コスト化の構造とした。   In order to solve the above-mentioned conventional problems, the present invention provides a bearing mechanism in the center of the brush holder, reduces the cost by changing the bearing from a ball bearing rig to an oil-impregnated bearing, and press-fits the oil-impregnated bearing into the brush holder. This eliminates the thrust load from the rotor on the brush holder, reducing the number of fixing screws for the non-output side bracket, and reducing the weight and cost.

第２の発明は、第１の発明において、ブラシホルダーに突起部が配設されている事を特徴とし、ブラケット形状のバーリング部分を削減し、低コスト化に有効である。突起部で位置決めする事によってブラシホルダーと反出力側ブラケットを締結する事でロータの芯出しを不要とした。   The second invention is characterized in that, in the first invention, a protrusion is disposed on the brush holder, and the bracket-shaped burring portion is reduced, which is effective for cost reduction. By positioning with the protrusion, the brush holder and the non-output side bracket are fastened to eliminate the need for rotor centering.

本発明によれば、ブラシホルダーに軸受保持機構、ブラケットへの固定用で位置決め突起部を配設し、ブラケット形状を簡素化する事により、モータの薄型、軽量化、低コスト化という効果が得られる。   According to the present invention, the bearing holding mechanism and the positioning projection for fixing to the bracket are arranged on the brush holder, and the bracket shape is simplified, so that the effect of reducing the thickness, weight and cost of the motor is obtained. It is done.

本発明の実施の形態１におけるフラットモータの断面図Sectional drawing of the flat motor in Embodiment 1 of this invention 従来例を示すフラットモータの構造断面図Cross-sectional view of a conventional flat motor structure 本発明の実施の形態１における出力軸側から見たブラシホルダーの正面図The front view of the brush holder seen from the output-shaft side in Embodiment 1 of this invention

第１の発明はブラシホルダーに含油軸受を圧入することにより、前記ブラシホルダーへのスラスト荷重を無くす事で固定用ねじの削減が可能となり、ブラケット形状の軸受機構を廃止する事でブラケット形状を簡素化して、軽量化、低コスト化にすることができる。   According to the first aspect, by inserting an oil-impregnated bearing into the brush holder, it is possible to reduce the fixing screw by eliminating the thrust load on the brush holder, and simplify the bracket shape by eliminating the bracket-shaped bearing mechanism. To reduce the weight and cost.

第２の発明は、第１の発明にブラシホルダーに突起部を３個以上配設し、回転方向での位置決めと空回転の防止、ロータの芯出しおよび誤組立防止の役割を果たす事が出来る。以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   2nd invention can arrange | position three or more protrusion parts to a brush holder in 1st invention, and can play the role of positioning in a rotation direction, prevention of idling, prevention of rotor centering, and misassembly. . Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の実施の形態１におけるフラットモータの断面図を示すものである。図３は出力軸側から見たブラシホルダーの正面図である。図１において、ブラシホルダー８は軸受機構を具備したものであり、反出力側含油軸受４ａをブラシホルダー８に圧入し、前記の反出力側含油軸受４ａに軸２を挿入してロータ１を構成している。 (Embodiment 1)
FIG. 1 shows a cross-sectional view of a flat motor according to Embodiment 1 of the present invention. FIG. 3 is a front view of the brush holder as seen from the output shaft side. In FIG. 1, a brush holder 8 is provided with a bearing mechanism, and a rotor 1 is configured by press-fitting an anti-output-side oil-impregnated bearing 4a into the brush holder 8 and inserting a shaft 2 into the anti-output-side oil-impregnated bearing 4a. doing.

以上のように構成された扁平型ブラシ付コアレスモータについて、以下その動作、作用を説明する。   About the flat type brushless coreless motor comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

まず、ブラシホルダー８に反出力側含油軸受４ａを圧入し、軸２を挿入する。   First, the anti-output-side oil-impregnated bearing 4a is press-fitted into the brush holder 8, and the shaft 2 is inserted.

軸２のスラスト方向の抜け止めとしては、出力側方向にはロータ１の軸付け根部の突起部が出力側含油軸受３ａにぶつかることで抜け止めとなる。また、反出力方向には、ロータ抜け止めワッシャ−や歯車のボス部（図示せず）を軸２に取り付け固定することで出力側含油軸受３ａにロータ抜け止めワッシャーなどがぶつかり、ブラシホルダー８側への抜け止めとなるようにする。   In order to prevent the shaft 2 from coming off in the thrust direction, the protrusion on the shaft base of the rotor 1 hits the output-side oil-impregnated bearing 3a in the output side direction to prevent the shaft 2 from coming off. Further, in the counter-output direction, a rotor retaining washer or a gear boss (not shown) is attached and fixed to the shaft 2 so that a rotor retaining washer hits the output-side oil-impregnated bearing 3a, and the brush holder 8 side. So that it can be secured.

このようにし、ブラシホルダー８の反出力方向への荷重が反出力側含油軸受４ａにかからず、ブラシホルダー８側へ軸２がぶつからないようにする。   In this way, the load in the counter-output direction of the brush holder 8 is not applied to the counter-output-side oil-impregnated bearing 4a, and the shaft 2 does not collide with the brush holder 8 side.

以上のような構成により、ブラシホルダー８にロータ１からのスラスト荷重が無くなるため、固定用ねじ１２を不要とする事が可能となる。ちなみに軸受を反出力側ボールベアリング４ｂ、出力側ボールベアリング３ｂから、それぞれ反出力側含油軸受４ａ、出力側含油軸受３ａに変更して低コスト化を図るとともにサイズを限定しない。   With the configuration as described above, the thrust load from the rotor 1 is eliminated from the brush holder 8, so that the fixing screw 12 can be dispensed with. Incidentally, the bearing is changed from the anti-output-side ball bearing 4b and the output-side ball bearing 3b to the anti-output-side oil-impregnated bearing 4a and the output-side oil-impregnated bearing 3a, respectively, and the cost is reduced and the size is not limited.

また、ブラシホルダー８に反出力側ブラケット７との固定用となる位置決め突起部８ａを配設する事で位置決め、誤組立防止にもなり組立が容易となる。位置決め突起部８ａはモータ外周に近く３箇所以上が望ましい。   In addition, by providing the brush holder 8 with a positioning projection 8a for fixing to the non-output-side bracket 7, positioning and misassembly can be prevented and assembly is facilitated. The positioning projections 8a are preferably close to the motor outer periphery and at three or more locations.

本発明は自動車等のラジエータ冷却ファンやカーエアコン用コンデンサ冷却ファン等の電装分野に使用される薄型化、軽量化、低コスト化を目的として有用である。   INDUSTRIAL APPLICABILITY The present invention is useful for the purpose of reducing the thickness, weight, and cost used in the field of electrical equipment such as radiator cooling fans for automobiles and condenser cooling fans for car air conditioners.

１ ロータ
２ 軸
３ａ 出力側含油軸受
３ｂ 出力側ボールベアリング
４ａ 反出力側含油軸受
４ｂ 反出力側ボールベアリング
５ ブラケット
６ 磁石
７ 反出力側ブラケット
８ ブラシホルダー
８ａ 位置決め突起部
９ ブラシ
１０ ブラシバネ
１１ 整流子
１２ ねじ DESCRIPTION OF SYMBOLS 1 Rotor 2 axis | shaft 3a Output side oil-impregnated bearing 3b Output side ball bearing 4a Anti-output side oil-impregnated bearing 4b Anti-output side ball bearing 5 Bracket 6 Magnet 7 Anti-output side bracket 8 Brush holder 8a Positioning protrusion 9 Brush 10 Brush spring 11 Commutator 12 screw

Claims (2)

ブラシホルダーに複数のブラシ収容部を配設し、前記ブラシホルダーの中心部に軸受機構を配設し、前記ブラシホルダーは反出力側ブラケットに固定される扁平型ブラシ付コアレスモータにおいて、前記ブラシホルダーの軸受機構に含油軸受を圧入する事で軸からのスラスト荷重を無くし、前記反出力側ブラケットと前記ブラシホルダーの固定用ねじを不要としたことを特徴とする扁平型ブラシ付コアレスモータ。 In the brushless coreless motor with a flat brush, the brush holder is provided with a plurality of brush housing portions, a bearing mechanism is provided at the center of the brush holder, and the brush holder is fixed to the non-output side bracket. A flat brushless coreless motor characterized in that an oil-impregnated bearing is press-fitted into the bearing mechanism to eliminate a thrust load from the shaft, and the fixing screw for the non-output side bracket and the brush holder is not required. 前記ブラシホルダーに前記反出力側ブラケットとの位置決め用となる突起部を複数配設し、前記反出力側ブラケットに嵌合することで固定されていることを特徴とする請求項１に記載の扁平型ブラシ付コアレスモータ。 The flatness according to claim 1, wherein a plurality of protrusions for positioning with the non-output side bracket are disposed on the brush holder and are fixed by being fitted to the non-output side bracket. Type brushless coreless motor.
JP2011206913A 2011-09-22 2011-09-22 Flat brushless coreless motor Expired - Fee Related JP5948560B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015011190A1 (en) 2014-08-29 2016-03-03 Makita Corporation Electrical apparatus and method for controlling the same
WO2020059512A1 (en) * 2018-09-18 2020-03-26 パナソニックＩｐマネジメント株式会社 Coreless motor with flat brush

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5683970U (en) * 1979-11-30 1981-07-06
JPS5857283U (en) * 1981-10-12 1983-04-18 株式会社リコー flat motor
JPS59145278U (en) * 1983-03-17 1984-09-28 三洋電機株式会社 Magnetic mounting device for small motors
JPS6113555U (en) * 1984-06-26 1986-01-27 カルソニックカンセイ株式会社 fan motor
JPS6274483U (en) * 1985-10-26 1987-05-13
JPS6295484U (en) * 1985-12-02 1987-06-18
JPS62198869U (en) * 1986-06-04 1987-12-17
JPH0497448U (en) * 1991-05-17 1992-08-24
JPH04124879U (en) * 1991-04-24 1992-11-13 邦雄 村田 dc motor
JPH08205456A (en) * 1995-01-24 1996-08-09 Tokyo Parts Ind Co Ltd Power supply for miniature motor

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5683970U (en) * 1979-11-30 1981-07-06
JPS5857283U (en) * 1981-10-12 1983-04-18 株式会社リコー flat motor
JPS59145278U (en) * 1983-03-17 1984-09-28 三洋電機株式会社 Magnetic mounting device for small motors
JPS6113555U (en) * 1984-06-26 1986-01-27 カルソニックカンセイ株式会社 fan motor
JPS6274483U (en) * 1985-10-26 1987-05-13
JPS6295484U (en) * 1985-12-02 1987-06-18
JPS62198869U (en) * 1986-06-04 1987-12-17
JPH04124879U (en) * 1991-04-24 1992-11-13 邦雄 村田 dc motor
JPH0497448U (en) * 1991-05-17 1992-08-24
JPH08205456A (en) * 1995-01-24 1996-08-09 Tokyo Parts Ind Co Ltd Power supply for miniature motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015011190A1 (en) 2014-08-29 2016-03-03 Makita Corporation Electrical apparatus and method for controlling the same
WO2020059512A1 (en) * 2018-09-18 2020-03-26 パナソニックＩｐマネジメント株式会社 Coreless motor with flat brush

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