JPH04165936A - Brush supporting device for dc motor - Google Patents

Brush supporting device for dc motor

Info

Publication number
JPH04165936A
JPH04165936A JP29014690A JP29014690A JPH04165936A JP H04165936 A JPH04165936 A JP H04165936A JP 29014690 A JP29014690 A JP 29014690A JP 29014690 A JP29014690 A JP 29014690A JP H04165936 A JPH04165936 A JP H04165936A
Authority
JP
Japan
Prior art keywords
end frame
rivet
support
head
brush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP29014690A
Other languages
Japanese (ja)
Inventor
Yasuyuki Yoshida
泰之 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP29014690A priority Critical patent/JPH04165936A/en
Publication of JPH04165936A publication Critical patent/JPH04165936A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To make it small in size, light in weight and excellent in vibration resistance and insulation property by interposing an insulating support between the head of a fastener and at least of a supporting plate and the inner end face of an end frame, and also bringing this insulating support into contact with the inside end face of the end frame. CONSTITUTION:A supporting plate 3 is fastened, at its burring part 3a, to end frame 6. The burring part 3a is burred, and the inside is threaded into a female screw. A supporting box 5 is fastened to the surface on the armature side of the supporting plate 3 by a rivet 1 through a bake plate 2. A bush 4 comprises a small cylinder 41, which insulates the barrel of the rivet 1 from the inside of the hole of the supporting plate 3, and a flange part 42, which surrounds the head of the rivet 1. The flange part 42 insulates the head of the rivet 1 from the supporting plate 3, and also the top is stuck closely to the inner end face of the end frame 6 through the insulating resinous layer 7. The insulating layer 7 is bonded to the inner end face of the end frame 6, and is interposed between the head of the rivet 1 and the inner end face of the end frame 6.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、直流モータのブラシ支持装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a brush support device for a DC motor.

[従来技術] 車両のスタータモータに用いられるブラシ支持装置の従
来例を第6図に示す。
[Prior Art] FIG. 6 shows a conventional example of a brush support device used in a starter motor of a vehicle.

支持板3は、そのバーリング部3aでねじ8によりエン
ドフレーム6に固定されている。また、ブラシ(図示せ
ず)を収容する支持箱5は支持板3にリベツ1〜(締結
具〉1により締結されている。
The support plate 3 is fixed to the end frame 6 by screws 8 at its burring portion 3a. Further, a support box 5 that accommodates a brush (not shown) is fastened to the support plate 3 with rivets 1 to (fasteners) 1.

ここで、−緒に締結されるベータ板2及びブツシュ4は
リベット1及び支持箱5を支持板から絶縁している。
Here, the beta plate 2 and the bush 4, which are fastened together, insulate the rivet 1 and the support box 5 from the support plate.

[発明が解決しようとする課題] しかしながら、近年益々装置の小形軽量化が要請されつ
つあり、この小形軽量化にともなう剛性不足によりディ
ーゼル車など振動が大きい車両では支持箱5部の振動が
大きくなるので、ブラシピグテールの断線、支持箱5や
支持板3の破損を考慮すると、剛性の不足を生じさせな
いために上記小型軽量化には限界があった。
[Problem to be solved by the invention] However, in recent years, there has been an increasing demand for smaller and lighter devices, and due to the lack of rigidity that accompanies this smaller size and lighter weight, vibrations in the 5 parts of the support box increase in vehicles with large vibrations such as diesel cars. Therefore, in consideration of breakage of the brush pigtail and damage to the support box 5 and support plate 3, there is a limit to the above-mentioned reduction in size and weight in order to avoid insufficient rigidity.

また、小型軽量化を図ると、振動により、リベット1の
頭部とエンドフレーム6とか接触して短絡づる可能性が
考えられ、また、接触にまで至らなくてもブラシ粉の蓄
積等の原因により短絡が生じる可能性が考えられる。
In addition, when trying to reduce the size and weight, there is a possibility that the head of the rivet 1 and the end frame 6 may come into contact with each other due to vibration, causing a short circuit.Also, even if the head of the rivet 1 does not come into contact with the end frame 6, it may be caused by accumulation of brush powder etc. There is a possibility that a short circuit may occur.

ずなわら、装置の小型軽量化は、剛性不足に基づく振動
増加による耐久性の低下と、リベツI〜の頭部とエンド
フレームの内端面との間の漏電の可能性の2つの要因に
より限界があった。
However, reducing the size and weight of the device is limited by two factors: reduced durability due to increased vibration due to lack of rigidity, and the possibility of electrical leakage between the head of the rivet I and the inner end surface of the end frame. was there.

本発明は、上記問題点に鑑みなされたものであり、小型
軽量で、かつ、耐振性と絶縁性に優れた直流モータのブ
ラシ支持装置を提供づ−ることを、その目的としている
The present invention has been made in view of the above problems, and an object of the present invention is to provide a brush support device for a DC motor that is small and lightweight, and has excellent vibration resistance and insulation properties.

[課題を解決するための手段] 本発明の直流モータのブラシ支持装置は、導電性のエン
ドフレームに固定され前記エンドフレームの内端面に沿
って延在する支持板と、前記エンドフレームと前記支持
板との間隙に位置する頭部から前記支持板を貫通ずる締
結具と、前記締結具により前記支持板に締結されブラシ
を収容する支持箱とを備える直流モータのブラシ支持装
置において、 前記締結具の頭部及び前記支持板の少なくとも一方と前
記エンドフレームの前記内端面との間に絶縁支持体を介
装するとともに、前記絶縁支持体は前記エンドフレーム
の内端面に接していることを特徴としている。
[Means for Solving the Problems] A DC motor brush support device of the present invention includes a support plate fixed to a conductive end frame and extending along an inner end surface of the end frame, the end frame and the support. A brush support device for a DC motor, comprising: a fastener that passes through the support plate from a head located in a gap with the plate; and a support box that is fastened to the support plate by the fastener and accommodates a brush, the fastener An insulating support is interposed between at least one of the head of the head and the support plate and the inner end surface of the end frame, and the insulating support is in contact with the inner end surface of the end frame. There is.

[作用及び発明の効果] この発明では、締結具の頭部又は支持板は絶縁支持体を
介してエンドフレーム側に支持されている。
[Operation and Effects of the Invention] In the present invention, the head or support plate of the fastener is supported on the end frame side via the insulating support.

したがって、絶縁支持体は、締結具の頭部をエンドフレ
ームから絶縁するとともに、締結具又は支持板の振動を
制振する。
The insulating support thus insulates the head of the fastener from the end frame and dampens vibrations of the fastener or support plate.

以上説明したように本発明の直流モータのブラシ支持装
置は、締結具の頭部及び支持板の少なくとも一方とエン
ドフレームの内端面との間に絶縁支持体を介装するとと
もに、この絶縁支持体がエンドフレームの内端面に接し
ているので、小型軽量で、かつ、耐振性と絶縁性に優れ
る。
As explained above, the DC motor brush support device of the present invention includes an insulating support interposed between at least one of the head of the fastener and the support plate and the inner end surface of the end frame, and the insulating support Since it is in contact with the inner end surface of the end frame, it is small and lightweight, and has excellent vibration resistance and insulation properties.

[実施例] 本発明の直流モータのブラシ支持装置のゴ実施例を第1
図〜第3図に示す。
[Example] The first embodiment of the brush support device for a DC motor of the present invention is described below.
It is shown in Figs.

この直流モータのブラシ支持装置は、車両のスタータモ
ータに用いられるもので、リベツ[〜(本発明でいう締
結具)1、ベーク板2、支持板3、ブツシュ4、支持箱
5、絶縁層7を有している。
This DC motor brush support device is used for a starter motor of a vehicle, and includes a rivet [~ (fastener as referred to in the present invention) 1, a baking plate 2, a support plate 3, a bush 4, a support box 5, and an insulating layer 7. have.

ここで、ブツシュ4及び絶縁層7は本発明でいう絶縁支
持体を構成している。
Here, the bushing 4 and the insulating layer 7 constitute an insulating support as referred to in the present invention.

支持板3は、そのバーリング部3aをねじ8によりエン
ドフレーム6に締結されている。バーリング部3aはバ
ーリング加工され、更にその内をめねじ加工されている
The support plate 3 is fastened to the end frame 6 at its burring portion 3a with screws 8. The burring portion 3a is burred and further internally threaded.

支持箱5は、支持板3のアーマチャ側の表面にベータ板
2を介してリベット(締結具)1により締結されている
。なお、予めリベット1はブツシュ4を挿通した後、支
持板3の孔部を貫通して支持箱5の孔部に挿入され、そ
れから、リベット1の先端部をかしめて支持箱5を支持
板3に固定する。なお、ブツシュ4及びベータ板2は絶
縁樹脂製であり、支持箱5、リベツ1〜1、支持板3、
エンドフレーム6は金属製である。
The support box 5 is fastened to the surface of the support plate 3 on the armature side with a rivet (fastener) 1 via a beta plate 2. Note that the rivet 1 is inserted into the bush 4 through the hole of the support plate 3 and inserted into the hole of the support box 5 in advance, and then the tip of the rivet 1 is caulked to attach the support box 5 to the support plate 3. Fixed to. Note that the bushing 4 and the beta plate 2 are made of insulating resin, and the support box 5, rivets 1 to 1, support plate 3,
The end frame 6 is made of metal.

ブツシュ4は、リベット1の胴部と支持板3の孔部内面
とを絶縁する小筒部41と、リベット1の頭部を囲むフ
ランジ部42とからなる。フランジ部42は、リベット
1の頭部と支持板3とを絶縁するとともに、その先端は
絶縁樹脂製の絶縁層7を介してエンドフレーム6の内端
面に密着されている。絶縁層7は、エンドフレーム6の
内端面に接着されてリベット1の頭部とエンドフレーム
6の内端面との間に介装されている。
The bush 4 includes a small cylindrical portion 41 that insulates the body of the rivet 1 from the inner surface of the hole of the support plate 3, and a flange portion 42 that surrounds the head of the rivet 1. The flange portion 42 insulates the head of the rivet 1 and the support plate 3, and its tip is closely attached to the inner end surface of the end frame 6 via an insulating layer 7 made of insulating resin. The insulating layer 7 is bonded to the inner end surface of the end frame 6 and interposed between the head of the rivet 1 and the inner end surface of the end frame 6.

次に、ブラシ周辺部について第2図を参照して説明する
Next, the surrounding area of the brush will be explained with reference to FIG. 2.

この第2図は、一部破断側面図である第1図の直流モー
タのブラシ支持装置を、第1図の下方から図示した断面
平面図である。
FIG. 2 is a cross-sectional plan view of the DC motor brush support device of FIG. 1, which is a partially cutaway side view, taken from below in FIG.

11は、板ばねからなるブラシスプリングで市って支持
箱5に支持されている。ブラシ10は支持箱5に摺動自
在に収容されており、ブラシスプリング11によってコ
ンミテータ9に押圧されている。12はブラシ10に給
電するためのブラシピグテールである。
Reference numeral 11 is supported on the support box 5 by a brush spring made of a leaf spring. The brush 10 is slidably housed in the support box 5 and is pressed against the commutator 9 by a brush spring 11. 12 is a brush pigtail for feeding power to the brush 10.

−〇 − 以上説明したようにこの実施例では、ブラシ10、支持
箱5と同電位のリベット1が、エンドフレーム6及び支
持板3から良好に絶縁されるとともに、両者をブツシュ
4及び絶縁層7を介して密接さけているので、装置各部
の剛性が強化され、耐振性及び絶縁性を維持しつつ小型
軽量化を図ることかできる。
-〇- As explained above, in this embodiment, the rivet 1, which has the same potential as the brush 10 and the support box 5, is well insulated from the end frame 6 and the support plate 3, and both are separated by the bush 4 and the insulating layer 7. Since the parts are closely spaced through each other, the rigidity of each part of the device is strengthened, and it is possible to reduce the size and weight while maintaining vibration resistance and insulation properties.

なd3、絶縁層7を振動吸収性に優れたゴムや樹脂で構
成してもよい。
d3, the insulating layer 7 may be made of rubber or resin with excellent vibration absorption properties.

(変形態様) 絶縁弾性体7は、第5図に示すように円筒状のブツシュ
4の内周面に嵌合する円板状の突起部7aをもつことも
できる。
(Modification) The insulating elastic body 7 can also have a disk-shaped protrusion 7a that fits into the inner peripheral surface of the cylindrical bush 4, as shown in FIG.

また、第4図及び第4図に示すように、ブツシュ4の内
部にゴム、樹脂等をボッティング成形してもよい。
Further, as shown in FIGS. 4 and 4, rubber, resin, etc. may be molded inside the bushing 4 by botting.

(実施例効果〉 この実施例では、ブツシュ4がリベット1の頭部全周を
囲み、かつ、絶縁層7がリベツ1〜1の頭部を密閉して
いる。
(Effects of Example) In this example, the bush 4 surrounds the entire circumference of the head of the rivet 1, and the insulating layer 7 seals the heads of the rivets 1-1.

したがって、この密閉空間内にブラシ粉が入らず、たと
えリベット1の頭部とエンドフレーム6の内端面とを近
接して配設しても、両者の短絡を防止することかできる
Therefore, brush powder does not enter this sealed space, and even if the head of the rivet 1 and the inner end surface of the end frame 6 are disposed close to each other, short circuits between the two can be prevented.

なaシこの場合に、絶縁層7を省略して、ブツシュ4の
先端をエンドフレーム6の内端面に直接、密接させても
にい。
Alternatively, in this case, the insulating layer 7 may be omitted and the tip of the bushing 4 may be brought directly into close contact with the inner end surface of the end frame 6.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の直流モータのブラシ支持装置の一実施
例を示す一部破断断面側面図、第2図はこの装置の断面
平面図、第3図はこの装置の八−へ線矢視平面図、第4
図及び第5図はそれぞれは変形態様を示すリベット周辺
断面図、第6図は従来の直流モータのブラシ支持装置の
一部破断断面側面図である、。 1・・・リベツ1〜 3・・・支持板 4・・・ブツシュ(絶縁支持体) 5・・・支持箱 6・・・エンドフレーム 7・・・絶縁層
FIG. 1 is a partially cutaway side view showing an embodiment of the DC motor brush support device of the present invention, FIG. 2 is a cross-sectional plan view of this device, and FIG. 3 is a view taken along the line 8-1 of this device. Floor plan, 4th
5 and 5 are respectively sectional views around the rivet showing a modified form, and FIG. 6 is a partially cutaway sectional side view of a conventional brush support device for a DC motor. 1... Rivets 1 to 3... Support plate 4... Bush (insulating support) 5... Support box 6... End frame 7... Insulating layer

Claims (1)

【特許請求の範囲】 導電性のエンドフレームに固定され前記エンドフレーム
の内端面に沿って延在する支持板と、前記エンドフレー
ムと前記支持板との間隙に位置する頭部から前記支持板
を貫通する締結具と、前記締結具により前記支持板に締
結されブラシを収容する支持箱とを備える直流モータの
ブラシ支持装置において、 前記締結具の頭部及び前記支持板の少なくとも一方と前
記エンドフレームの前記内端面との間に絶縁支持体を介
装するとともに、前記絶縁支持体は前記エンドフレーム
の内端面に接していることを特徴とする直流モータのブ
ラシ支持装置。
[Scope of Claims] A support plate fixed to a conductive end frame and extending along an inner end surface of the end frame, and a head portion located in a gap between the end frame and the support plate, the support plate being fixed to the conductive end frame. A DC motor brush support device comprising a penetrating fastener and a support box fastened to the support plate by the fastener and housing a brush, the head of the fastener, at least one of the support plate, and the end frame. A brush support device for a DC motor, characterized in that an insulating support is interposed between the end frame and the inner end surface of the end frame, and the insulating support is in contact with the inner end surface of the end frame.
JP29014690A 1990-10-26 1990-10-26 Brush supporting device for dc motor Pending JPH04165936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29014690A JPH04165936A (en) 1990-10-26 1990-10-26 Brush supporting device for dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29014690A JPH04165936A (en) 1990-10-26 1990-10-26 Brush supporting device for dc motor

Publications (1)

Publication Number Publication Date
JPH04165936A true JPH04165936A (en) 1992-06-11

Family

ID=17752376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29014690A Pending JPH04165936A (en) 1990-10-26 1990-10-26 Brush supporting device for dc motor

Country Status (1)

Country Link
JP (1) JPH04165936A (en)

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