WO2016035553A1 - Pompe à palettes électrique - Google Patents

Pompe à palettes électrique Download PDF

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Publication number
WO2016035553A1
WO2016035553A1 PCT/JP2015/073265 JP2015073265W WO2016035553A1 WO 2016035553 A1 WO2016035553 A1 WO 2016035553A1 JP 2015073265 W JP2015073265 W JP 2015073265W WO 2016035553 A1 WO2016035553 A1 WO 2016035553A1
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WO
WIPO (PCT)
Prior art keywords
pump
motor
cam ring
housing
respect
Prior art date
Application number
PCT/JP2015/073265
Other languages
English (en)
Japanese (ja)
Inventor
浩一朗 赤塚
藤田　朋之
智行 中川
史恭 加藤
裕希 五味
Original Assignee
Ｋｙｂ株式会社
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 Ｋｙｂ株式会社 filed Critical Ｋｙｂ株式会社
Publication of WO2016035553A1 publication Critical patent/WO2016035553A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member

Definitions

  • the present invention relates to an electric vane pump.
  • JP2011-117391A discloses an electric vane pump driven by the power of an electric motor.
  • the cam ring is positioned with respect to the pump cover via a pin, while the motor rotating shaft is positioned with respect to the pump housing and the motor housing via a bearing.
  • An object of the present invention is to provide an electric vane pump capable of suppressing the generation of noise.
  • an electric vane pump a motor shaft rotatably supported by a motor housing via a bearing, a pump housing connected to the motor housing and having a pump housing portion formed therein, A pump rotor coupled to the motor shaft and accommodated in the pump accommodating portion, a plurality of vanes provided so as to be capable of reciprocating in the radial direction with respect to the pump rotor, and accommodating the pump rotor and the pump rotor And a cam ring in which the tip of the vane is slidably contacted with an inner peripheral surface as the motor rotates, and a positioning pin for positioning the cam ring with respect to the motor housing.
  • FIG. 1 is a cross-sectional view of the electric vane pump according to the first embodiment of the present invention.
  • FIG. 2 is a sectional view of an electric vane pump according to the second embodiment of the present invention.
  • the electric vane pump 100 is used, for example, as a hydraulic supply source that supplies hydraulic oil (working fluid) to hydraulic equipment such as a continuously variable transmission mounted on a vehicle.
  • the electric vane pump 100 includes an electric motor 1 and a vane pump 30 that is driven by the power of the electric motor 1 and supplies hydraulic oil to hydraulic equipment.
  • the electric motor 1 includes a motor shaft 4 rotatably supported by a motor housing 3 via bearings 2a and 2b, a motor rotor 5 having a plurality of permanent magnets arranged in the circumferential direction and fixed to the motor shaft 4, a motor A stator 6 fixed to the inner periphery of the housing 3 and wound with a coil.
  • the motor rotor 5 and the stator 6 are arranged concentrically, and a slight gap exists between them.
  • the motor housing 3 includes a substantially bottomed cylindrical main body 3a and a motor cover 3b that closes the opening of the main body 3a and is connected to the vane pump 30.
  • the main body 3a and the motor cover 3b are assembled together by fitting an annular spigot 3c formed on the motor cover 3b to the inner peripheral surface of the main body 3a.
  • the bearing 2a is fixed to the bottom of the main body 3a, and the bearing 2b is fixed to the inner peripheral surface of the hollow 3d of the motor cover 3b.
  • the motor shaft 4 is rotatably supported by two bearings 2a and 2b, and one end side of the motor shaft 4 is inserted into the interior of the pump housing 40 of the vane pump 30 through the hollow portion 3d of the motor cover 3b.
  • the vane pump 30 houses a pump rotor 31 connected to the motor shaft 4, a plurality of vanes 32 provided so as to be capable of reciprocating in the radial direction with respect to the pump rotor 31, and the rotation of the pump rotor 31. Accordingly, a cam ring 33 in which the tip of the vane 32 is in sliding contact with the inner cam surface is provided.
  • a plurality of pump chambers 34 are defined by the outer peripheral surface of the pump rotor 31, the cam surface of the cam ring 33, and the adjacent vanes 32.
  • the cam ring 33 is an annular member having a substantially elliptical cam surface.
  • the cam surface of the cam ring 33 includes two suction regions that expand the volume of the pump chamber 34 as the pump rotor 31 rotates, and two discharge regions that contract the volume of the pump chamber 34 as the pump rotor 31 rotates. Have.
  • a first side plate 36 as a plate member is disposed in contact with one side of the pump rotor 31 and the cam ring 33, and a second side plate 37 is disposed in contact with the other side.
  • the first side plate 36 and the second side plate 37 are arranged with both side surfaces of the pump rotor 31 and the cam ring 33 sandwiched therebetween, and define the pump chamber 34.
  • the pump rotor 31, the cam ring 33, the first side plate 36, and the second side plate 37 are accommodated in a pump accommodating portion 40a formed in the pump housing 40 in a concave shape.
  • the opening of the pump housing part 40 a is closed by the motor cover 3 b of the motor housing 3.
  • Two suction ports are formed on the outer periphery of the first side plate 36 by cutting them into an arc shape.
  • the two suction ports open corresponding to the two suction areas of the cam ring 33 and guide the hydraulic oil to the pump chamber 34.
  • two discharge ports (not shown) are formed penetrating in an arc shape.
  • the two discharge ports open corresponding to the discharge region of the cam ring 33 and discharge the hydraulic oil in the pump chamber 34.
  • a suction passage 41 communicating with the two suction ports of the first side plate 36 is formed along the inner peripheral surface of the pump housing portion 40a.
  • a high pressure chamber 42 communicating with the two discharge ports of the second side plate 37 is formed in an annular shape on the bottom surface of the pump housing portion 40 a of the pump housing 40.
  • the high pressure chamber 42 is partitioned by the second side plate 37 disposed on the bottom surface of the pump housing portion 40a.
  • each pump chamber 34 in the cam ring 33 is sucked through the suction port of the first side plate 36.
  • the hydraulic oil is sucked from the passage 41 and is discharged to the high pressure chamber 42 through the discharge port of the second side plate 37.
  • each pump chamber 34 in the cam ring 33 supplies and discharges hydraulic oil by expansion and contraction accompanying the rotation of the pump rotor 31.
  • the hydraulic oil discharged to the high pressure chamber 42 is supplied to the hydraulic equipment.
  • the relative rotation of the cam ring 33, the first side plate 36 and the second side plate 37 is restricted by the two positioning pins 50. Thereby, the positioning of the suction region of the cam ring 33 and the suction port of the first side plate 36 and the positioning of the discharge region of the cam ring 33 and the discharge port of the second side plate 37 are performed.
  • the positioning pin 50 is inserted through the cam ring 33 and the first side plate 36, one end side is inserted into the second side plate 37, and the other end side is inserted into the motor cover 3b.
  • the cam ring 33, the first side plate 36, and the second side plate 37 are positioned with respect to the motor cover 3b by the positioning pins 50.
  • the motor cover 3b and the pump housing 40 are positioned by the inlay portion 55 and fastened by the bolt 56.
  • the inlay portion 55 includes a cylindrical portion 55a formed on the end surface of the motor cover 3b, and an annular recess 55b formed on the end surface of the pump housing 40 and into which the cylindrical portion 55a is fitted.
  • a seal member 57 with which the motor shaft 4 is slidably contacted is provided on the inner peripheral surface of the hollow portion 3d of the motor cover 3b.
  • the sealing member 57 prevents hydraulic fluid from leaking from the vane pump 30 to the electric motor 1.
  • the cam ring 33 is positioned with respect to the motor cover 3b of the motor housing 3 via the positioning pins 50.
  • the motor shaft 4 is rotatably supported by the motor housing 3 via the bearings 2a and 2b and positioned.
  • both the cam ring 33 and the motor shaft 4 are positioned with respect to the motor housing 3. That is, the cam ring 33 and the motor shaft 4 are positioned with respect to the same member. Therefore, even if the dimensional accuracy of the spigot portion 55 is poor and the positioning accuracy of the motor cover 3b and the pump housing 40 is poor, the coaxiality between the cam ring 33 and the motor shaft 4 does not deteriorate. Therefore, vibration of the pump rotor 31 with respect to the cam ring 33 can be suppressed, and generation of noise can be suppressed.
  • the motor shaft 4 is supported only by the motor housing 3 through the bearings 2a and 2b. That is, one end side of the motor shaft 4 is formed by extending through the hollow portion 3d of the motor cover 3b and extending into the pump housing portion 40a of the pump housing 40, but the one end side is not supported by the bearing. It is a free end.
  • the motor shaft 4 is supported only by the motor housing 3 and is not supported by the pump housing 40, the motor shaft 4 is accurately positioned with respect to the motor housing 3. Therefore, both the cam ring 33 and the motor shaft 4 can be reliably positioned with respect to the motor housing 3, so that the swing of the pump rotor 31 with respect to the cam ring 33 can be suppressed.
  • the pump housing 40 is not provided with a pump cover for closing the pump housing portion 40a, and the pump housing portion 40a is closed by the motor cover 3b. Therefore, the number of parts can be reduced by the amount that the pump cover is not provided.
  • the pump chamber 34 can be partitioned inside the cam ring 33 and the hydraulic oil is guided from the suction passage to the pump chamber 34. be able to.
  • the electric vane pump 200 which concerns on 2nd Embodiment of this invention is demonstrated.
  • it demonstrates centering on a different point from the said 1st Embodiment, and attaches
  • the electric vane pump 200 is different from the first embodiment in that a pump cover 43 as a plate member is provided in the pump housing 40 instead of the first side plate 36 provided in the electric vane pump 100.
  • the pump cover 43 is fastened to the pump housing 40 by bolts 61 so as to close the pump housing portion 40a, and is provided between the motor cover 3b and the cam ring 33.
  • a suction port that guides hydraulic oil to the pump chamber 34 is formed in the pump cover 43.
  • the motor cover 3b and the pump cover 43 are positioned by the spigot part 60.
  • the inlay portion 60 includes a cylindrical portion 60a formed on the end surface of the pump cover 43 and an annular recess 60b formed on the end surface of the motor cover 3b and into which the cylindrical portion 60a is fitted.
  • the positioning pin 50 is inserted through the cam ring 33 and the pump cover 43, one end side is inserted into the second side plate 37, and the other end side is inserted into the motor cover 3b.
  • the cam ring 33 is positioned with respect to the motor cover 3b by the positioning pins 50.
  • the cam ring 33 is positioned with respect to the motor cover 3b of the motor housing 3 via the positioning pins 50, and the motor shaft 4 is positioned via the bearings 2a and 2b. And is rotatably supported and positioned.
  • both the cam ring 33 and the motor shaft 4 are positioned with respect to the motor housing 3. Therefore, even if the dimensional accuracy of the spigot part 60 is poor and the positioning accuracy of the motor cover 3b and the pump cover 43 is poor, the coaxiality between the cam ring 33 and the motor shaft 4 does not deteriorate. Therefore, vibration of the pump rotor 31 with respect to the cam ring 33 can be suppressed, and generation of noise can be suppressed.
  • the electric vane pump 200 is provided with a pump cover 43, but the pump cover 43 is provided in place of the first side plate 36 of the electric vane pump 100, so that the number of parts is increased as compared with the electric vane pump 100. There is nothing.
  • the pump cover 43 is provided between the motor cover 3b and the cam ring 33, the pump chamber 34 can be partitioned inside the cam ring 33, and the hydraulic oil can be guided from the suction passage to the pump chamber 34. it can.
  • the electric vane pumps 100 and 200 are connected to the motor shaft 4 rotatably supported by the motor housing 3 via bearings 2a and 2b, and the pump housing portion 40a is connected to the motor housing 3.
  • a cam ring 33 that accommodates the tip of the vane 32 in sliding contact with the inner peripheral surface as the pump rotor 31 rotates and a positioning pin 50 that positions the cam ring 33 with respect to the motor housing 3 are provided.
  • the motor shaft 4 is supported only by the motor housing 3 via the bearings 2a and 2b.
  • a plate member (first side plate 36, pump cover 43) provided between the motor housing 3 and the cam ring 33 is provided, and the positioning pin 50 is provided through the plate member.
  • the pump chamber 34 can be partitioned inside the cam ring 33, and the hydraulic oil is guided from the suction passage 41 to the pump chamber 34. be able to.

Abstract

La présente invention concerne une pompe à palettes électrique (100) comprenant : un arbre moteur (4) porté rotatif par un carter moteur (3) par l'intermédiaire de paliers (2a, 2b) ; un corps de pompe (40) relié au carter moteur (3) et pourvu d'une partie logement de pompe (40a) ; un rotor de pompe (31) relié à l'arbre moteur (4) et logé dans la partie logement de pompe (40a) ; une pluralité d'aubes (32) pouvant effectuer un mouvement de va-et-vient dans la direction radiale par rapport au rotor de pompe (31) ; un excentrique (33) logeant le rotor de pompe (31) et ayant une surface circonférentielle intérieure qui est en contact coulissant avec les parties d'extrémité des aubes (32) en fonction de la rotation du rotor de pompe (31) ; et un ergot de positionnement (50) destiné à déterminer la position de l'excentrique (33) par rapport au carter moteur (3).
PCT/JP2015/073265 2014-09-02 2015-08-19 Pompe à palettes électrique WO2016035553A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014178300A JP2016050574A (ja) 2014-09-02 2014-09-02 電動ベーンポンプ
JP2014-178300 2014-09-02

Publications (1)

Publication Number Publication Date
WO2016035553A1 true WO2016035553A1 (fr) 2016-03-10

Family

ID=55439619

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/073265 WO2016035553A1 (fr) 2014-09-02 2015-08-19 Pompe à palettes électrique

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JP (1) JP2016050574A (fr)
WO (1) WO2016035553A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019050711A (ja) * 2017-09-08 2019-03-28 日本電産トーソク株式会社 電動オイルポンプ
KR102199140B1 (ko) * 2019-03-06 2021-01-06 엘지전자 주식회사 베인 로터리 압축기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5601422A (en) * 1994-10-19 1997-02-11 Robert Bosch Gmbh Assembly for feeding fuel out of a supply tank to an internal combustion engine
JP2001512215A (ja) * 1997-07-30 2001-08-21 デラウェアー キャピタル フォーメーション， インコーポレイテッド 液圧ベーン作動を有するロータリポンプ
US20050214152A1 (en) * 2004-03-25 2005-09-29 Tuthill Corporation Rotary vane pump
JP2005307902A (ja) * 2004-04-23 2005-11-04 Matsushita Electric Ind Co Ltd ベーンロータリ型真空ポンプ
JP2014521002A (ja) * 2011-07-08 2014-08-25 ピールブルグ パンプ テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツング 自動車分野において使用するための真空ポンプ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5601422A (en) * 1994-10-19 1997-02-11 Robert Bosch Gmbh Assembly for feeding fuel out of a supply tank to an internal combustion engine
JP2001512215A (ja) * 1997-07-30 2001-08-21 デラウェアー キャピタル フォーメーション， インコーポレイテッド 液圧ベーン作動を有するロータリポンプ
US20050214152A1 (en) * 2004-03-25 2005-09-29 Tuthill Corporation Rotary vane pump
JP2005307902A (ja) * 2004-04-23 2005-11-04 Matsushita Electric Ind Co Ltd ベーンロータリ型真空ポンプ
JP2014521002A (ja) * 2011-07-08 2014-08-25 ピールブルグ パンプ テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツング 自動車分野において使用するための真空ポンプ

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