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JPH0510901B2 - - Google Patents
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JPH0510901B2 - - Google Patents

Info

Publication number
JPH0510901B2
JPH0510901B2 JP58180349A JP18034983A JPH0510901B2 JP H0510901 B2 JPH0510901 B2 JP H0510901B2 JP 58180349 A JP58180349 A JP 58180349A JP 18034983 A JP18034983 A JP 18034983A JP H0510901 B2 JPH0510901 B2 JP H0510901B2
Authority
JP
Japan
Prior art keywords
motor
sealed terminal
prevention plate
insulation deterioration
deterioration prevention
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.)
Expired - Lifetime
Application number
JP58180349A
Other languages
Japanese (ja)
Other versions
JPS6074942A (en
Inventor
Kazuo Ikeda
Shin Ishihara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP58180349A priority Critical patent/JPS6074942A/en
Publication of JPS6074942A publication Critical patent/JPS6074942A/en
Publication of JPH0510901B2 publication Critical patent/JPH0510901B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225Terminal boxes or connection arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Compressor (AREA)
  • Motor Or Generator Frames (AREA)

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は密閉形電動圧縮機が焼損した場合発生
する炭化物が密封端子表面を被うことにより、密
封端子が絶縁不良になることを防止するに好適な
絶縁劣化防止板に関するものである。
[Detailed Description of the Invention] [Field of Application of the Invention] The present invention is aimed at preventing poor insulation of sealed terminals due to carbide generated when a hermetic electric compressor burns out covering the surface of the sealed terminals. The present invention relates to a suitable insulation deterioration prevention plate.

〔発明の背景〕[Background of the invention]

従来のルームエアコン等に使用される密閉形電
動圧縮機は、圧縮機が何らかの原因でロツクした
場合、オーバーロードリレー等の保護により、モ
ートルの焼損を防いでいる。
In conventional hermetic electric compressors used in room air conditioners and the like, if the compressor locks up for some reason, protection such as an overload relay prevents the motor from burning out.

しかし、オーバロードリレが不適切であつたり
あるいは、オーバロードリレが故障した場合は、
モートルにロツク電流が連続して流れるため、モ
ートルは焼損する。この際モートルとケーシング
の密封端子を接続するモートルリード線は、ロツ
ク電流により発生する熱によりリード線の絶縁物
が溶けるので、異相のリード線が接触して短絡
し、リード線は断線する。またモートルが焼損す
ると、ケーシング内部には、モートル絶縁材料、
潤滑油等が炭化して、炭化物が付着する。この炭
化物は電気の良導体であるので、この炭化物が密
封端子の絶縁部に付着すると絶縁が悪くなつて感
電等の事故になる恐れがある。
However, if the overload relay is inappropriate or malfunctions,
The motor burns out because the locking current flows continuously through the motor. At this time, the insulation of the motor lead wire that connects the motor and the sealed terminal of the casing melts due to the heat generated by the lock current, so the lead wires of different phases come into contact and short-circuit, causing the lead wire to break. Also, if the motor burns out, the motor insulation material,
Lubricating oil etc. carbonizes and carbide adheres. Since this carbide is a good conductor of electricity, if this carbide adheres to the insulating portion of the sealed terminal, the insulation may deteriorate and there is a risk of accidents such as electric shock.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、密封形電動圧縮機のモートル
が焼損した場合に生ずる炭化物が、密封端子の絶
縁部に付着するのを防止することである。
An object of the present invention is to prevent carbide produced when the motor of a sealed electric compressor burns out from adhering to the insulating portion of the sealed terminal.

〔発明の概要〕[Summary of the invention]

即ち、密封端子部に、難燃性樹脂で形成された
円板を設けて、密封端子の絶縁部に炭化物が付着
するのを防止する構造としたものである。
That is, a disc made of flame-retardant resin is provided in the sealed terminal portion to prevent carbide from adhering to the insulating portion of the sealed terminal.

〔発明の実施例〕[Embodiments of the invention]

以下本発明の一実施例を第1図により説明す
る。
An embodiment of the present invention will be described below with reference to FIG.

第1図は、ルームエアコン等に用いられている
密閉形電動圧縮機の部分縦断面図である。1はケ
ーシング、2はモートル、3はモートルのリード
線、は密封端子である。5は密封端子のピンで
密封端子のキヤツプ6とは、ガラス7によつて絶
縁されている。モートルへの電気の供給は、密封
端子のケーシング外部のピン5aに電源を接続し
て行う。従来の密閉形電動圧縮機は、圧縮機が何
らかの原因でロツクした場合、モートルには定格
運転電流の4〜5倍のロツク電流が流れる。通常
この様な場合は、圧縮機に設けられているオーバ
ロードリレが作動して、モートルへの通電を遮断
し、ロツク電流によりモートルが焼損するのを防
止している。
FIG. 1 is a partial longitudinal sectional view of a hermetic electric compressor used in room air conditioners and the like. 1 is a casing, 2 is a motor, 3 is a motor lead wire, and 4 is a sealed terminal. Reference numeral 5 denotes a pin of a sealed terminal, which is insulated from a cap 6 of the sealed terminal by a glass 7. Electricity is supplied to the motor by connecting a power source to a pin 5a outside the casing of the sealed terminal. In a conventional hermetic electric compressor, when the compressor locks for some reason, a lock current that is four to five times the rated operating current flows through the motor. Normally, in such a case, an overload relay provided in the compressor is activated to cut off the power to the motor, thereby preventing the motor from burning out due to the lock current.

しかしオーバロードリレの仕様が不適切であつ
たり、オーバロードリレが故障したりした場合は
モートルがロツク電流により過熱し焼損する。モ
ートルが焼損すると、モートルの絶縁材、潤滑油
等が炭化し、炭化物がケーシングの内面1aや密
封端子の内面4aに付着する。
However, if the specifications of the overload relay are inappropriate or if the overload relay malfunctions, the motor will overheat and burn out due to the lock current. When the motor burns out, the insulating material, lubricating oil, etc. of the motor are carbonized, and carbide adheres to the inner surface 1a of the casing and the inner surface 4a of the sealed terminal 4 .

炭化物が密封端子のガラス部7に付着する
と、炭化物は電気の良導体であるので、ピン5と
キヤツプ6の間の絶縁が悪くなり、感電事故を生
ずる恐れがあつた。
When carbide adheres to the glass portion 7 of the sealed terminal 4 , since carbide is a good conductor of electricity, the insulation between the pin 5 and the cap 6 deteriorates, leading to a risk of electric shock.

本発明は、モートルが何らかの原因で焼損した
場合でも、上述の如き絶縁不良によつて生ずる感
電事故を防止する構造に関するものである。
The present invention relates to a structure that prevents electric shock accidents caused by poor insulation as described above even if the motor burns out for some reason.

第2図は、本発明の一実施例を示す密閉形電動
圧縮機の部分縦断面図、第3図は本発明の密封端
子絶縁劣化防止板の平面図、第4図は密封端子に
絶縁劣化防止板を取り付けた図、第5図は、第4
図のA−A断面図である。
Fig. 2 is a partial vertical sectional view of a sealed electric compressor showing an embodiment of the present invention, Fig. 3 is a plan view of a sealed terminal insulation deterioration prevention plate of the present invention, and Fig. 4 is a partial longitudinal sectional view of a sealed terminal insulation deterioration prevention plate according to an embodiment of the present invention. The figure with the prevention plate attached, Figure 5, is the 4th
It is an AA sectional view of the figure.

絶縁劣化防止板は、第3図に示すごとく、3箇
所に略長方形のスリツト8aを設けてある。これ
は、第5図に図示のとおり密封端子のピン5の
先端に固着してあるタブ9およびピン5の先端部
を挿通するものである。またスリツトに対向して
設けてある凸部8bは、第5図に示す如く、絶縁
劣化防止板を密封端子4のキヤツプ6の端部全周
に接触して当該キヤツプ6内部を覆うように取り
付ける作業の際、絶縁劣化防止板が落下するのを
防ぐために、凸部8bをタブ9に接触させて係止
させるため設けたものである。
As shown in FIG. 3, the insulation deterioration prevention plate is provided with approximately rectangular slits 8a at three locations. This is for inserting the tab 9 fixed to the tip of the pin 5 of the sealed terminal 4 and the tip of the pin 5 as shown in FIG. Further, the convex portion 8b provided opposite the slit is used to attach an insulation deterioration prevention plate to the entire circumference of the end of the cap 6 of the sealed terminal 4 so as to cover the inside of the cap 6, as shown in FIG. In order to prevent the insulation deterioration prevention plate from falling during work, the convex portion 8b is provided to contact and lock the tab 9.

絶縁劣化防止板8を密封端子4に第2図の如く
装着した後、モートルリード線3のコネクター1
0をタブ9に挿入した後は、コネクタ10の外法
寸法が絶縁劣化防止板8のスリツト8aより大き
いので、圧縮機運転中に絶縁劣化防止板8が密封
端子4より落下することはない。
After attaching the insulation deterioration prevention plate 8 to the sealed terminal 4 as shown in Fig. 2, connect the connector 1 of the motor lead wire 3.
0 into the tab 9, the external dimension of the connector 10 is larger than the slit 8a of the insulation deterioration prevention plate 8, so the insulation deterioration prevention plate 8 will not fall from the sealed terminal 4 during compressor operation.

絶縁劣化防止板の材質としては、モートルが焼
損しても炭化することがない四フツ化エチレン樹
脂が最適であることが、実験より明らかになつた
ので、上記材質を使用している。上述の絶縁劣化
防止板8を圧縮機内部の密封端子4に第2図の如
く装着することによりモートルが焼損した際生じ
る炭化物が充電部のピン5の絶縁部であるガラス
7の表面に付着することがなくなるので、絶縁劣
化防止を防ぐことができる。
Experiments have revealed that the optimal material for the insulation deterioration prevention plate is tetrafluoroethylene resin, which does not carbonize even if the motor is burnt out, so the above material is used. By attaching the above-mentioned insulation deterioration prevention plate 8 to the sealed terminal 4 inside the compressor as shown in Fig. 2, carbide produced when the motor burns out will adhere to the surface of the glass 7, which is the insulating part of the pin 5 of the live part. Therefore, insulation deterioration can be prevented.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、密封端子のキヤツプの端部全
周に接触して当該キヤツプ内部を覆うように上記
密封端子のピンを挿通し係止された絶縁劣化防止
板を備えているため、万一モートルが焼損した場
合でもモートルが焼損して生じる炭化物がピンと
キヤツプとの間の絶縁物表面に付着することを防
止できる。これによつて、絶縁劣化が防止されて
感電事故を防止できる。しかも上記絶縁劣化防止
板の材質を四フツ化エチレン樹脂としているた
め、モートルが焼損して加熱されても絶縁劣化防
止板自体の炭化物の発生がなく、上記モートルの
焼損による炭化物のキヤツプ内部への侵入を防止
するのと相俟つて完全な絶縁劣化防止板が図れ
る。
According to the present invention, since the insulation deterioration prevention plate is inserted and locked through the pin of the sealed terminal so as to contact the entire circumference of the end of the cap of the sealed terminal and cover the inside of the cap, it is possible to Even if the motor burns out, carbide produced by the motor burnout can be prevented from adhering to the surface of the insulator between the pin and the cap. This prevents insulation deterioration and prevents electric shock accidents. Moreover, since the material of the insulation deterioration prevention plate is polytetrafluoroethylene resin, even if the motor burns out and is heated, the insulation deterioration prevention plate itself will not generate carbides, and the carbide caused by the motor burnout will not get inside the cap. In addition to preventing intrusion, a complete insulation deterioration prevention plate can be achieved.

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

第1図は従来の密封形電動圧縮機の部分縦断面
図、第2図は、本発明の一実施例を示す密閉形電
動圧縮機の部分縦断面図、第3図は本発明の密封
端子絶縁劣化防止板の平面図、第4図は密封端子
に絶縁劣化防止板を取り付けた図、第5図は第4
図のA−A断面図である。 1……ケーシング、1a……ケーシング内面、
2……モートル、3……モートルのリード線、
……密封端子、4a……密封端子の内面、5,5
a……密封端子のピン、6……キヤツプ、7……
ガラス、8……絶縁劣化防止板、8a……スリツ
ト、8b……凸部、9……タブ、10……リード
線のコネクタ。
FIG. 1 is a partial vertical sectional view of a conventional sealed electric compressor, FIG. 2 is a partial vertical sectional view of a sealed electric compressor showing an embodiment of the present invention, and FIG. 3 is a sealed terminal of the present invention. A plan view of the insulation deterioration prevention plate, Figure 4 is a diagram of the insulation deterioration prevention plate attached to the sealed terminal, and Figure 5 is a diagram of the insulation deterioration prevention plate attached to the sealed terminal.
It is an AA sectional view of the figure. 1...Casing, 1a...Inner surface of casing,
2...Motor, 3...Motor lead wire, 4
...Sealed terminal, 4a...Inner surface of sealed terminal, 5,5
a... Sealed terminal pin, 6... Cap, 7...
Glass, 8... insulation deterioration prevention plate, 8a... slit, 8b... convex portion, 9... tab, 10... lead wire connector.

Claims (1)

【特許請求の範囲】 1 ケーシングと、 このケーシング内部に位置された圧縮要素と、
この圧縮要素を駆動するモートルと、 上記ケーシングに取り付けられた密封端子と、 上記ケーシングの内部に位置するとともに上記
密封端子のピンとの間を絶縁物により絶縁された
上記密封端子のキヤツプと、 上記キヤツプの端部全周に接触して当該キヤツ
プ内部を覆うように上記密封端子のピンを挿通し
係止された絶縁劣化防止板と、 上記絶縁劣化防止板に挿通したピンと上記モー
トルとを接続するモートルリード線とを備え、 上記絶縁劣化防止板の材質が四フツ化エチレン
樹脂である ことを特徴とする密閉形電動圧縮機。
[Claims] 1. A casing, a compression element located inside the casing,
a motor that drives the compression element; a sealed terminal attached to the casing; a cap of the sealed terminal located inside the casing and insulated from the pin of the sealed terminal by an insulator; an insulation deterioration prevention plate into which the pin of the sealed terminal is inserted and locked so as to contact the entire circumference of the end of the cap and cover the inside of the cap; and a motor which connects the pin inserted through the insulation deterioration prevention plate and the motor. A hermetic electric compressor, comprising: a lead wire, and the material of the insulation deterioration prevention plate is tetrafluoroethylene resin.
JP58180349A 1983-09-30 1983-09-30 Enclosed motor-driven compressor Granted JPS6074942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58180349A JPS6074942A (en) 1983-09-30 1983-09-30 Enclosed motor-driven compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58180349A JPS6074942A (en) 1983-09-30 1983-09-30 Enclosed motor-driven compressor

Publications (2)

Publication Number Publication Date
JPS6074942A JPS6074942A (en) 1985-04-27
JPH0510901B2 true JPH0510901B2 (en) 1993-02-12

Family

ID=16081673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58180349A Granted JPS6074942A (en) 1983-09-30 1983-09-30 Enclosed motor-driven compressor

Country Status (1)

Country Link
JP (1) JPS6074942A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6383958U (en) * 1986-11-20 1988-06-01
DE3812996A1 (en) * 1988-04-19 1989-11-09 Swf Auto Electric Gmbh ELECTRIC MOTOR, ESPECIALLY WIPER MOTOR FOR DRIVING A WINDOW WIPER SYSTEM IN A MOTOR VEHICLE
KR100511323B1 (en) * 2002-11-19 2005-08-31 엘지전자 주식회사 Power supply of compressor
JP6960377B2 (en) * 2018-06-07 2021-11-05 東芝三菱電機産業システム株式会社 Electromechanical built-in pressure resistant device and power supply section passage structure processing method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54153301U (en) * 1978-04-18 1979-10-25
JPS626840Y2 (en) * 1981-03-10 1987-02-17
JPH0230137B2 (en) * 1982-04-13 1990-07-04 Energy Support Corp DENRYOKUHYUUZUEREMENTO

Also Published As

Publication number Publication date
JPS6074942A (en) 1985-04-27

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