JPH0590875U - Brush wear detector for rotating electric machine - Google Patents
Brush wear detector for rotating electric machineInfo
- Publication number
- JPH0590875U JPH0590875U JP3328392U JP3328392U JPH0590875U JP H0590875 U JPH0590875 U JP H0590875U JP 3328392 U JP3328392 U JP 3328392U JP 3328392 U JP3328392 U JP 3328392U JP H0590875 U JPH0590875 U JP H0590875U
- Authority
- JP
- Japan
- Prior art keywords
- brush
- commutator
- electric machine
- rotating electric
- conductive wires
- 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
Links
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
(57)【要約】
【目的】 ブラシ保持器の加工やブラシ保持器への配線
が不要であり、ブラシ本体の加工だけで、配線が簡単で
動作の確実な回転電機のブラシ摩耗検出装置を提供す
る。
【構成】 2本の導電線6を、整流子の回転方向に少な
くとも整流子片間の絶縁距離より大きい間隔を存して、
絶縁体7を介してブラシ本体1に埋め込み、各導電線6
の他端を警報装置9に接続し、ブラシが摩耗して2本の
導電線6が整流子面Aと接触したとき、整流子片間に発
生する整流起電力により前記警報装置9を作動するよう
にした回転電機のブラシ摩耗検出装置。
(57) [Abstract] [Purpose] Providing a brush wear detection device for rotating electrical machines that does not require processing of the brush holder or wiring to the brush holder, and wiring is simple and operation is reliable only by processing the brush body. To do. [Structure] The two conductive wires 6 are spaced at least in the direction of rotation of the commutator by a distance larger than the insulation distance between the commutator pieces,
Each conductive wire 6 is embedded in the brush main body 1 via an insulator 7.
When the brush is worn and the two conductive wires 6 come into contact with the commutator surface A, the other end of is connected to the alarm device 9, and the alarm device 9 is activated by the rectification electromotive force generated between the commutator pieces. Brush wear detection device for rotating electric machine.
Description
【0001】[0001]
本考案は回転電機のブラシ摩耗検出装置に関する。 The present invention relates to a brush wear detecting device for a rotating electric machine.
【0002】[0002]
従来のこの種の装置の一例が実公昭36−6618号公報に示されている。図 2はその構成を示すもので、1はブラシ本体、2はブラシ保持器、3はブラシ押 え金具、4は圧接バネ、5はブラシ1に並設され、ブラシ保持器2内に案内され た補助電極で、ブラシ1の摩耗限界とほぼ等高位置において、整流子面Aに対向 する導電線6と、それを包囲する絶縁被覆7からなり、特にブラシ1の上部付近 においては該補助電極5の突起を係合する係合部8が形成されている。9はブラ シ押え金具3と補助電極5との間に接続挿入された警報装置、10はそれと直列 に接続された抵抗、11は電源でこれらによつてブラシ摩耗警報回路が形成され ている。そしてブラシ1が摩耗限界に達すると導電線6が整流子面Aに接触し、 回路を閉じて表示又は警報を発する構成となっている。 An example of a conventional device of this type is shown in Japanese Utility Model Publication No. 36-6618. FIG. 2 shows its structure. 1 is a brush main body, 2 is a brush holder, 3 is a brush pressing metal fitting, 4 is a pressure contact spring, 5 is a brush, which is installed in parallel with the brush holder 2 and is guided into the brush holder 2. The auxiliary electrode is composed of a conductive wire 6 facing the commutator surface A and an insulating coating 7 surrounding the conductive wire 6 at a position almost equal to the wear limit of the brush 1, and particularly near the upper part of the brush 1. An engaging portion 8 for engaging the protrusion 5 is formed. Reference numeral 9 is an alarm device connected and inserted between the brush pressing member 3 and the auxiliary electrode 5, 10 is a resistor connected in series with the alarm device, and 11 is a power supply, which forms a brush wear alarm circuit. When the brush 1 reaches the wear limit, the conductive wire 6 comes into contact with the commutator surface A, and the circuit is closed to issue a display or alarm.
【0003】[0003]
上記のブラシ摩耗検出装置は、回転電機を駆動する電圧と警報装置回路の電源 電圧との2系統の電圧が印加されるため、複雑な配線が必要になると共に、補助 電極部により整流子と摺動するブラシの接触面積が小さくなり、ブラシの電流密 度が高くなる問題がある。また、補助電極の突起と係合する係合部を形成する必 要があり、ブラシの加工も複雑となる。 本考案は、上記した欠点を解消する回転電機のブラシ摩耗検出装置を提供する ことを目的とする。 The brush wear detection device described above requires two lines of voltage, one for driving the rotating electric machine and the other for the power supply voltage for the alarm device circuit. There is a problem that the contact area of the moving brush becomes small and the current density of the brush becomes high. In addition, it is necessary to form an engaging portion that engages with the protrusion of the auxiliary electrode, which complicates brush processing. It is an object of the present invention to provide a brush wear detecting device for a rotary electric machine that solves the above-mentioned drawbacks.
【0004】[0004]
本考案は、2本の導電線を、整流子の回転方向に少なくとも整流子片間の絶縁 距離より大きい間隔を存して、絶縁体を介してブラシ本体に埋め込み、各導電線 の他端を警報装置に接続し、ブラシが摩耗して2本の導電線が整流子面と接触し たとき、整流子片間に発生する整流起電力により前記警報装置を作動するように した回転電機のブラシ摩耗検出装置に関する。 According to the present invention, two conductive wires are embedded in the brush main body through an insulator at a distance at least larger than the insulating distance between the commutator pieces in the rotating direction of the commutator, and the other end of each conductive wire is connected. A brush for a rotating electric machine, which is connected to an alarm device and which activates the alarm device by rectifying electromotive force generated between the commutator pieces when the brush is worn and the two conductive wires come into contact with the commutator surface. A wear detector.
【0005】 本考案において、ブラシ本体に埋め込む導電線は、テフロン又はビニール被覆 した軟銅線や、銅粉、銀粉等をビニールパイプに充填して固めたものなどが用い られる。ブラシ本体に埋め込む先端はテフロンやビニールを溶融させて銅線に固 定するか、接着剤を銅線とそれらの絶縁物との間に挿入して両者を接着固定し、 導電線をブラシ本体に接触しないように絶縁する。その方法は、ブラシ本体に摩 耗限界までの穴を穿ち、前記先端を絶縁した導電線を挿入し固定する。導電線の 他端は警報装置に接続される。埋め込む2本の導電線間の距離は、整流子片間の 絶縁距離より大きくして、少なくとも隣接する整流子片間に発生する整流起電力 を感知する。In the present invention, as the conductive wire to be embedded in the brush body, a Teflon- or vinyl-coated annealed copper wire, a copper powder, a silver powder or the like filled in a vinyl pipe and solidified is used. The tip to be embedded in the brush body is fixed to copper wire by melting Teflon or vinyl, or an adhesive is inserted between the copper wire and those insulators to fix both, and the conductive wire is attached to the brush body. Insulate to prevent contact. In this method, a hole up to the wear limit is bored in the brush body, and a conductive wire whose tip is insulated is inserted and fixed. The other end of the conductive wire is connected to the alarm device. The distance between the two conductive wires to be embedded is made larger than the insulation distance between the commutator pieces, and at least the rectification electromotive force generated between the adjacent commutator pieces is sensed.
【0006】 上記のような構成にして、ブラシが摩耗限界まで摩耗し、導電線の2本が整流 子面と接触すれば、整流起電力が2本の導電線を通してランプ、ブザー等の警報 装置に伝わり、警報装置が作動する。上記において、警報装置を発光ダイオード とし、回転電機の内部に取り付け、光ファイバーケーブルと接続すれば、回転電 機の接続場所まで行かなくてもブラシの交換時期がわかるので好ましい。また整 流起電力が小さい場合には、増幅回路を設けて高い信頼性でブラシの摩耗を検出 することができる。With the above structure, when the brush is worn to the limit of wear and two conductive wires come into contact with the commutator surface, the commutation electromotive force passes through the two conductive wires and an alarm device such as a lamp or a buzzer. The alarm device is activated. In the above, it is preferable that the alarm device is a light emitting diode, is installed inside the rotating electric machine, and is connected to the optical fiber cable because the brush replacement time can be known without going to the connecting place of the rotating electric machine. Further, when the rectifying electromotive force is small, it is possible to detect the brush wear with high reliability by providing an amplifier circuit.
【0007】[0007]
次に本考案の実施例を説明する。 図1は本考案の実施例における回転電機のブラシ摩耗検出装置の要部を示す図 である。回転電機は電車用の直流電動機で、整流子片間の絶縁距離は0.8mm、 整流子片幅4.5mm、であり、ブラシは2×(厚さ10、幅40、高さ50)mm の2分割のもので2本の導電線間隔を15mmとした。図において、1はブラシ本 体、2はブラシ保持器、2本の導電線6は軟銅線で、直径0.18mmのものを3 0本集合し、0.4mm厚みのビニールの絶縁被覆7をしたものである。ブラシ本 体1に整流子の回転方向に15mmの間隔を存して直径2mmの穴を2か所穿ち、先 端を溶融して絶縁した導電線6をその各穴に挿入し、接着して固定した。導電線 6の他端には発光ダイオードの警報装置9を接続した。 Next, an embodiment of the present invention will be described. FIG. 1 is a diagram showing a main part of a brush wear detecting device for a rotary electric machine according to an embodiment of the present invention. The rotating electric machine is a DC electric motor for electric trains, the insulation distance between the commutator pieces is 0.8 mm, the width of the commutator piece is 4.5 mm, and the brush is 2 x (thickness 10, width 40, height 50) mm. The distance between the two conductive wires was 15 mm. In the figure, 1 is a brush main body, 2 is a brush holder, 2 conductive wires 6 are annealed copper wires, 30 pieces of 0.18 mm in diameter are gathered, and a 0.4 mm thick vinyl insulation coating 7 is provided. It was done. Make two holes with a diameter of 2 mm in the brush body 1 at intervals of 15 mm in the direction of rotation of the commutator. Insert the conductive wire 6 with its tip melted and insulated into each hole and glue it. Fixed A light emitting diode alarm device 9 was connected to the other end of the conductive wire 6.
【0008】 このようにして、ブラシ本体1が摩耗するに従い、先端を絶縁した導電線6が 整流子面Aに変位してきて摩耗限界に達すると、2本の導電線6の先端の絶縁が 摩耗して軟銅線が整流子面Aと接触し、回路が閉じ、整流子片間に発生する整流 起電力により発光ダイオードが光り、ブラシの交換時期を知ることができる。In this way, as the brush body 1 wears, when the conductive wire 6 whose tip is insulated is displaced to the commutator surface A and reaches the wear limit, the insulation of the tips of the two conductive wires 6 wears. Then, the annealed copper wire comes into contact with the commutator surface A, the circuit is closed, and the rectifying electromotive force generated between the commutator pieces causes the light emitting diode to illuminate, so that it is possible to know when to replace the brush.
【0009】[0009]
本考案のブラシ摩耗検出装置は、回転電機の微小な整流起電力を利用している ので危険がなく、また別個の電源を使用する必要がなく、配線が簡単である。更 に、実用中はブラシ接触面積が小さくなるということはなく、確実にブラシの摩 耗限界を検出でき、過度のブラシ摩耗による整流子面の損傷を防止できる。 The brush wear detecting device of the present invention uses the minute rectification electromotive force of the rotating electric machine, so that there is no danger, and there is no need to use a separate power source, and the wiring is simple. In addition, the brush contact area does not become small during practical use, the brush wear limit can be reliably detected, and damage to the commutator surface due to excessive brush wear can be prevented.
【図面の簡単な説明】[Brief description of drawings]
【図1】本考案の実施例になる回転電機のブラシ摩耗検
出装置の要部を示す図である。FIG. 1 is a diagram showing a main part of a brush wear detecting device for a rotating electric machine according to an embodiment of the present invention.
【図2】従来の回転電機のブラシ摩耗検出装置の要部を
示す図である。FIG. 2 is a diagram showing a main part of a conventional brush wear detection device for a rotary electric machine.
1…ブラシ本体、2…ブラシ保持器、3…ブラシ押え金
具、4…圧接バネ、5…補助電極、6…導電線、7…絶
縁被覆、8…係合部、9…警報装置 10…抵抗、11…電源DESCRIPTION OF SYMBOLS 1 ... Brush main body, 2 ... Brush holder, 3 ... Brush pressing metal fitting, 4 ... Pressure contact spring, 5 ... Auxiliary electrode, 6 ... Conductive wire, 7 ... Insulating coating, 8 ... Engaging portion, 9 ... Alarm device 10 ... Resistance , 11 ... Power supply
Claims (1)
なくとも整流子片間の絶縁距離より大きい間隔を存し
て、絶縁体を介してブラシ本体に埋め込み、各導電線の
他端を警報装置に接続し、ブラシが摩耗して2本の導電
線が整流子面と接触したとき、整流子片間に発生する整
流起電力により前記警報装置を作動するようにした回転
電機のブラシ摩耗検出装置。1. The two conductive wires are embedded in the brush main body through an insulator at a distance larger than the insulation distance between the commutator pieces in the rotation direction of the commutator, and the other end of each conductive wire is provided. To a warning device, and when the brush is worn and the two conductive wires come into contact with the commutator surface, the commutator electromotive force generated between the commutator pieces activates the warning device. Wear detection device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3328392U JPH0590875U (en) | 1992-05-21 | 1992-05-21 | Brush wear detector for rotating electric machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3328392U JPH0590875U (en) | 1992-05-21 | 1992-05-21 | Brush wear detector for rotating electric machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0590875U true JPH0590875U (en) | 1993-12-10 |
Family
ID=12382211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3328392U Pending JPH0590875U (en) | 1992-05-21 | 1992-05-21 | Brush wear detector for rotating electric machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0590875U (en) |
-
1992
- 1992-05-21 JP JP3328392U patent/JPH0590875U/en active Pending
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