JPS5934095A - Lubricating apparatus for electric car equipped with automatic speed change gear - Google Patents

Abstract

PURPOSE:To obviate the necessity for lubricating pump and reduce the dimension of the whole apparatus by installing a pressure regulating valve onto a hydraulic circuit for supplying pressurized oil into a frictional engagement element of an automatic speed change gear and feeding the pressurized oil whose pressure is regulated to below the pressure in the hydraulic circuit, by said valve, into lubricating positions. CONSTITUTION:The pressurized oil in a pump 21 is supplied into the frictional engagement element 20 of an automatic speed change gear 3 through a hydraulic circuit 26, and while the pressure of a portion of the oil is reduced through a pressure regulating valve 30, and said oil is supplied into the lubricating position 54 of the automatic speed change gear 3 through a valve 40, oil passage 51, side hole 53, and an input shaft 18. Said oil returns to an oil sink 22, or is introduced into a hollow shaft 7 through an orifice 55, oil passage 56, and a nozzle 57, and then passes through lateral holes 58 and 59, cooling a rotor 6, and returns into the oil sink 22 through a hole 60, after lubricating the bearing 10 and 11 of an electric motor 2.

Description

【発明の詳細な説明】 本発明は白！ｒｌＩｌ弯速機を有する電気自動車の測子
）装！ｉｌｉに関する。ここで電気自動車とは、駆動原
動鳳として電動はのみを使用する自動車のみならず、′
１−ｎＩＩＪ１機と内燃機関とを組合わせたハイブリッ
ド動力す式の自動車も含むものとする。[Detailed Description of the Invention] The present invention is white! Electric vehicle probe equipped with rlIl speed machine! Regarding ili. Here, an electric vehicle is not only a vehicle that uses electric power as its driving force, but also a
This also includes hybrid powered vehicles that combine one 1-nIIJ and an internal combustion engine.

従来の電気自動車用電動機はグリースで潤滑されている
のが一般的であり、低温時に馴擦損失が増加する傾向に
あった。また７１１１潤屑する場合にはポンプ等の潤７
骨装ｊ４が必要であるが、全体としての効率がきわめて
重要な電気自動「ｌｉにとっては、このような付加前装
ｆｕが増加することは好ましくない。Conventional motors for electric vehicles are generally lubricated with grease, and friction loss tends to increase at low temperatures. In addition, if 7111 moisture is removed, please use the pump, etc.
Although additional fascia j4 is necessary, such an increase in additional veneer fu is undesirable for electric automobiles where overall efficiency is extremely important.

本発明は、自動変速機の摩擦係合要素を操作する千油を
電動機および自動変速機の潤ｌ骨にも利用することによ
って、付加的な潤滑ポンプを必要とせず、小形かつ１３
量で効率のよい潤滑装ｊＫＩを提供することにある。The present invention eliminates the need for an additional lubrication pump and is compact and 13cm in size, by utilizing the lubricant that operates the frictional engagement elements of the automatic transmission for lubricating the electric motor and the automatic transmission.
The objective is to provide a lubrication system jKI that is efficient in terms of quantity.

このため本発明によれば、自動変速機のξｒ擦係合要素
へ圧油を供給する圧油η１路に調王弁を接続し、この調
圧弁により前記圧油回路の圧力より低い圧力に調圧され
た圧ｊ’［ＩＩを電＋ＴＪＪＪｎおよび自ｕＪＣ速機の
潤９個所へ供給する。これにより摩擦係合要素の操作用
圧油は、潤ｒ骨に適した低い圧力に調圧されて所望の潤
滑個所へ送られる。Therefore, according to the present invention, a regulating valve is connected to the pressure oil η1 path that supplies pressure oil to the ξr friction engagement element of the automatic transmission, and the pressure is adjusted to a lower pressure than the pressure in the pressure oil circuit by this pressure regulating valve. The pressurized pressure j'[II is supplied to the electric +TJJJn and 9 points of the own uJC speed machine. As a result, the pressure oil for operating the friction engagement element is regulated to a low pressure suitable for lubrication and is sent to the desired lubrication location.

このため付加的な調圧弁が必要になるが、潤７骨ポンプ
に比較して簡単かつ安価で、ｆｆ１ｆｆｉもずっと小さ
くてすむ。This requires an additional pressure regulating valve, but it is simpler and cheaper than the Jun7bone pump, and ff1ffi is much smaller.

本発明の実施例を図面について説明すると、１は電動機
２と詳細には示しでない自動変速機＋（こン・Ｊして共
ｉ＋！ｌ！ｊＪ、　ｌ−ランスアクスフレケースで、に
のケースｌの一部である１８助磯ハウシング４Ｇこけ、
電動挺２の：ｌＩ、１定子５が圧子５れ、回転子６は中
空回転軸１７−Ｉ−に圧入されている。；可転りＩｌ′
１１７　ＬＪ　、’＼ウシンク４の両１１．１壁８およ
び９にそれぞｆ＋　１ｉ＋！＋・：’）＋　ｏおよび１
１を介して支持されている。To explain the embodiment of the present invention with reference to the drawings, 1 is an electric motor 2 and an automatic transmission (not shown in detail). 18 Sukeiso Housing 4G moss, which is part of l.
The rotor 6 is press-fitted into the hollow rotating shaft 17-I-, and the rotor 6 is press-fitted into the hollow rotating shaft 17-I-. ; Rotatable Il'
117 LJ, '\f+ 1i+ on both 11.1 walls 8 and 9 of Usink 4, respectively! +・:')+ o and 1
1.

１肺受１（）および１１の潤滑ｉ１＋１うＳ　’Ｉ−、
ｎ動ノ蔑内部・へ漏れ／、工いようにするため、軸受１
０．ＩＩより軸り自白側にオイルシール１２．１３がそ
れぞれ、没Ｇづられている。1 lung receiving 1() and 11 lubrication i1+1us 'I-,
In order to prevent leakage to the inside of the bearing,
0. Oil seals 12 and 13 are recessed on the shaft side from II, respectively.

電動隠２の同転輔？の玉７：ｉｊに取付けられたビニぢ
ン１５は、ケース１に回転可能に支持されろ中間歯巾１
６を介して、自動変速機３の中空人力軸＋　８−１’：
にある駆動歯車Ｉ９に動力を与える。この自動変速機は
公知の任意の購成のもので、１：　＜　、ｊｆ−曲で操
作されるその摩擦クラッチサブ１ノーキ等の係合υ素は
一括して２０で示されている３゜ ２１は自動■連撮の人力軸１８により駆動される歯巾ポ
ンプで、４１１受け２２からストレーす２３を介して油
を変速機ハウジンクにある吸入口２４から吸込み、加圧
して吐出口２５から吐出する。この加圧された油（用油
）は、自動変速機の摩擦係合要素２０を含む主回路２６
へ供給される。この主回路２６の圧力を所定の値に保つ
ため、逃し弁としての調圧弁３０が主回路２６に接続さ
れている。この調圧弁３０は周知の構ａをｔ〕も、オリ
フィス３７を介してスプール３２用操作圧室３３と主回
路２６へつながる高圧口３４とへポンプ２１からの高圧
の（１）油が供給され、スプール３２のランド３５を調
圧ばね３６の力に担して■１下げ、高圧口３４したがっ
て庄−・ｎ　Ｉ！、イ、）・）で逃し口３７へ接続しよ
うとする。したがって高圧口３４の圧力が調圧はね３６
の力より大きいと、圧油は高圧口３４から逃１ノロ３７
を通って逃げ、この圧力が下る。こうして主回路２６の
圧力は調圧はね３６の強力により定まる所定の圧力例え
ば８〜１０ｋｇ／ｃｍ２に保たれる。The same Tensuke from Denkigakure 2? The vinyl 15 attached to the ball 7:ij is rotatably supported by the case 1.
Hollow human power shaft of automatic transmission 3 via 6 + 8-1':
Power the drive gear I9 located at. This automatic transmission is of any known type, and the engagement υ elements of its friction clutch sub 1, which is operated in the 1: 21 is a tooth width pump driven by a manual shaft 18 for automatic continuous shooting, which sucks oil from a suction port 24 in the transmission housing from a receiver 22 through a strainer 23, pressurizes it, and discharges it from a discharge port 25. do. This pressurized oil (utility oil) is supplied to the main circuit 26 including the frictional engagement element 20 of the automatic transmission.
supplied to In order to maintain the pressure in the main circuit 26 at a predetermined value, a pressure regulating valve 30 serving as a relief valve is connected to the main circuit 26. This pressure regulating valve 30 has a well-known structure (a) and (t), in which high-pressure (1) oil is supplied from the pump 21 to the operating pressure chamber 33 for the spool 32 and the high-pressure port 34 connected to the main circuit 26 via the orifice 37. , the land 35 of the spool 32 is lowered by ■1 by the force of the pressure regulating spring 36, and the high pressure port 34 is lowered by the force of the pressure regulating spring 36. , A, ) and ) to connect to the relief port 37. Therefore, the pressure at the high pressure port 34 is increased by the pressure regulating spring 36.
If the force is greater than the force, the pressure oil will escape from the high pressure port 34 with a 1-slop 37
escapes through the air, and this pressure drops. In this way, the pressure in the main circuit 26 is maintained at a predetermined pressure determined by the force of the pressure regulating spring 36, for example, 8 to 10 kg/cm<2>.

本発明によれば、この主回路２６の圧油１の一部か、電
ＭＪは２および自！１Ｉ７１変速機３の潤滑とさらに７
＜７７．（＋にも利用される。この場合圧油の圧力はこ
れらの［１的には高すぎるので、潤？骨あるいＬｔ面冷
却適した圧力を得るため、さらに調圧弁ｔ１０が用いら
れる。この調圧弁４０は調圧弁３（）お同し原Ｆｌ！　
：〆Ｊ　’ｉｒＪ成と作用をもっているので、ｋＪ　ｐ
ｙ、、する部分には１０を加えた数字で示し、説明を？
′１′略する。これにより調圧弁４０の高圧口４４につ
ながるイ・Ｊ加回路５０には、例しは、１〜２ｋｇ７ｃ
ｍ”の潤滑および冷却に適した一定圧勾が得られる。こ
の付加回路５０は変速機ハウシンクにある油路５１を経
て、中空人ｆＪ軸１８にある横７ｆｉ５１を経てこの入
力ＩＩＱｂ　ｌｓ内へ入り、それから変速機の必要な潤
？骨個所５４へ送られて潤ｌ（゛）を行ない、再び曲受
け２２へ戻る。According to the present invention, part of the pressure oil 1 of this main circuit 26 or the electric MJ 2 and the self! Lubrication of 1I71 transmission 3 and further 7
<77. (It is also used for +. In this case, the pressure of the pressure oil is too high for these [1], so a pressure regulating valve t10 is further used to obtain a pressure suitable for cooling the lubricant or Lt surface. The pressure regulating valve 40 is the same as the pressure regulating valve 3 ().
: Since it has the effect of 〆J 'irJ formation, kJ p
Indicate the part that does y by adding 10 and give an explanation.
'1' is omitted. As a result, the I/J addition circuit 50 connected to the high pressure port 44 of the pressure regulating valve 40 can hold, for example, 1 to 2 kg7c.
This additional circuit 50 enters this input IIQb ls via an oil passage 51 in the transmission housing sink and a lateral 7fi 51 in the hollow man fJ shaft 18. Then, it is sent to the necessary lubrication point 54 of the transmission, performs lubrication, and returns to the music receiver 22 again.

−ノｊＩ・を加回路５０の曲は自動変速・幾潤滑による
ＩＦ　ノＪ愁動の影響を少なくするために設けられたオ
リフィス５５を経て、７１１勘機ハウジング４にある油
路５０を通り、中空１回転ｆｉ１１１７の開放端へ入り
込むノズル５７から中空軸７内へ入り、回転子６を冷却
すると共に、横穴５８．５９から川て、軸受１０．＋１
を潤滑する。潤？骨を終った油は、ハウジング４にある
穴６０を経て油受け２２へ戻る。なお電動機２の固定子
５を冷却する必要がある場合には、油路５６の油を固定
子５のまわりのハウジング部分へ導けばよい。- The music of the adding circuit 50 passes through an orifice 55 provided to reduce the influence of IF noise caused by automatic gear shifting and lubrication, and then passes through an oil passage 50 in the 711 engine housing 4. It enters the hollow shaft 7 through the nozzle 57 that enters the open end of the hollow one-rotation fi 1117, cools the rotor 6, and flows through the side hole 58.59 to the bearing 10. +1
Lubricate. Jun? The oil that has left the bone returns to the oil pan 22 through the hole 60 in the housing 4. Note that if it is necessary to cool the stator 5 of the electric motor 2, the oil in the oil passage 56 may be guided to the housing portion around the stator 5.

このようにして本発明によれば、電動自動１ｉの潤滑に
必要な油として自動変速機の主回路用圧油の一部を利用
するので、潤滑ポンプが省略され、圧油発生用ポンプ１
つですむため、測子）ポンプの使用による効率低下が防
１ｊ；され、全体が小形で軽量になる。寸加的に必要に
なる調圧弁はＨａが簡ｒｌｉでかつ小形であり、このた
めの費用および所要空間の増大はわずかでよい。さらに
圧油の一部を測置のみならず冷却にも利用できるので、
冷却のための１付加的装置も不要になり、さらに小形軽
量化が行なわれるという利点もある。In this manner, according to the present invention, a part of the pressure oil for the main circuit of the automatic transmission is used as the oil necessary for lubrication of the electric automatic 1i, so the lubrication pump is omitted, and the pressure oil generation pump 1
As a result, the decrease in efficiency due to the use of a probe pump is prevented, and the entire device becomes smaller and lighter. The pressure regulating valve, which is additionally required, is simple and small, and the increase in cost and space required for this is small. Furthermore, a portion of the pressure oil can be used not only for measurement but also for cooling.
There is also the advantage that an additional device for cooling is no longer required, and further compactness and weight reduction are achieved.

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

図は本発明実施例の概略溝・支間である。 ２・　・　・電動機、３・・・自動安連撮、１０゜１１
・・・−１す１１受、２０・・・摩擦係合要素、２Ｉ・
・・ｍ　ｔ１ｉポンプ、４０・・・調圧弁、５４・・・
潤？骨個所。The figure schematically shows grooves and spans in an embodiment of the present invention. 2. ・Electric motor, 3...Automatic continuous shooting, 10°11
...-1S 11 receiver, 20...Frictional engagement element, 2I.
...m t1i pump, 40...pressure regulating valve, 54...
Jun? Bones.

Claims (1)

【特許請求の範囲】[Claims] 自動秒速機の摩擦係合要素へ圧油を供給するＩＩ−曲回
路に調圧弁を接続し、この調圧弁によりＨ４１Ｊ記千曲
回路の圧力より低い圧力に調圧された１丁ｒＩｌｌを電
動機および自動変速機の潤滑個所へ供給吏ることを特徴
とする、自動変速機を有する電気・自動車の潤滑装置。A pressure regulating valve is connected to the II-curve circuit that supplies pressure oil to the frictional engagement element of the automatic second machine, and the pressure of the 1-cylinder, which is regulated to a lower pressure than the pressure of the H41J thousand-curve circuit, is connected to the electric motor and the automatic second machine. A lubrication device for electric vehicles and automobiles having automatic transmissions, characterized in that it supplies lubrication points to the lubrication points of the transmission.