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WO2000036303A1 - Vane type vacuum pump for automobiles - Google Patents

Vane type vacuum pump for automobiles Download PDF

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Publication number
WO2000036303A1
WO2000036303A1 PCT/JP1998/005642 JP9805642W WO0036303A1 WO 2000036303 A1 WO2000036303 A1 WO 2000036303A1 JP 9805642 W JP9805642 W JP 9805642W WO 0036303 A1 WO0036303 A1 WO 0036303A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
vacuum pump
rotor
housing
vane
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.)
Ceased
Application number
PCT/JP1998/005642
Other languages
French (fr)
Japanese (ja)
Inventor
Shigeru Onoue
Tsuyoshi Yano
Tomoki Takahashi
Takashi Kinoshita
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to EP98959196A priority Critical patent/EP1055823B1/en
Priority to DE69839159T priority patent/DE69839159T2/en
Priority to KR10-2000-7008554A priority patent/KR100385683B1/en
Priority to PCT/JP1998/005642 priority patent/WO2000036303A1/en
Priority to TW087120879A priority patent/TW414837B/en
Publication of WO2000036303A1 publication Critical patent/WO2000036303A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C18/3442—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0078—Fixing rotors on shafts, e.g. by clamping together hub and shaft

Definitions

  • the present invention relates to an improvement of a vane type vacuum pump for an automobile.
  • FIG. 9 is a side sectional view showing an example of the conventional automobile vane vacuum pump.
  • FIG. 10 is a sectional view of the conventional automobile vane vacuum pump shown in FIG. It is sectional drawing which shows the spline connection of.
  • the conventional vane-type vacuum pump for automobiles has a suction port 1 and a discharge port 2 and a cylindrical housing 4 and a bracket 5 connected to each other by bolts 3. And form a closed space.
  • the bracket 5 rotatably supports a shaft 7 by a pairing 8.
  • the shaft 7 is provided with a mouth 9 that is eccentrically housed in the housing 4 and can be rotated in the housing 4.
  • the mouth 9 is located in a radially extending vane groove 10 as shown in Fig.
  • a vane 11 is provided which rotates with the rotor 9 while sliding on the inner peripheral surface of the housing 4 at the outer edge thereof, and the fluid is sucked from the suction port 1 by the rotation of the mouth 9. Discharge pressure feed from outlet 2.
  • the shaft 7 is provided with a coupling 13 so that a rotational force can be input from the vehicle side.
  • the shaft 7 is also provided with a spline 14 so that torque can be transmitted in correspondence with the spline 15 of the mouth 9.
  • a rotational force is transmitted to the shaft 7 from the coupling 13
  • the rotor 9 rotates eccentrically in the housing 4, and the rotor 9 rotates in accordance with the eccentric rotation.
  • the vane 11 rotates from the rotor 9 while sliding on the inner peripheral surface of the housing 4 in an attempt to protrude radially outward due to centrifugal force, sucking fluid from the inlet 1 and sending pressure from the outlet 2 I do.
  • shaft 7 and mouth 9 are connected by splines 14 and 15 to form a spline connection.
  • splines 14 and 15 have high processing costs and high product prices.
  • the spline joints of splines 14 and 15 are lubricated with oil, but abnormal wear may occur due to the oil properties.
  • the spline connection is a loose connection, so it is difficult to obtain accuracy.
  • since spline coupling requires strength against the torque of the spline it is necessary to use a material with high strength.
  • iron-based sintered products have been used for the rotor 9, and steel has been used for the shaft 7. As a result, the product could not be reduced in weight.
  • the mouth 9 and the housing 4 are made of materials having different coefficients of thermal expansion, so that it is necessary to make a large gap between the mouth 9 and the housing to absorb the difference in thermal expansion.
  • the present invention has been made to solve the above-described problems, and its object is to reduce the processing cost by reducing the weight without causing abnormal wear between shafts, and to reduce the machining cost. It is to provide a pump. Disclosure of the invention
  • a cylindrical housing having an inlet and an outlet, a rotatable housing eccentrically housed in the housing, and a rotatable drive of the port.
  • a pump that has a shaft that rotates and a vane that slides on the inner peripheral surface of the housing as the rotor rotates, and that pumps fluid from the suction port to the outlet.
  • a vane type vacuum pump for an automobile wherein the shaft and the rotor are integrally fixed.
  • the shaft may be integrally formed by insert molding at the time of forming the mouth, the mouth may be formed by aluminum die casting, and the shaft may be integrally formed by plastic molding. In the evening, it may be formed by baking after molding with aluminum powder.
  • the protrusions or grooves on the outer periphery of the shaft may be formed integrally during cold forging of the shaft, and the protrusions or grooves on the outer periphery of the shaft may be formed integrally during production of the shaft by firing.
  • the protrusion of the shaft is fixed by welding an iron-based sheet metal molding to the outer periphery of the shaft.
  • the housing and the mouth may be formed of the same material.
  • FIG. 1 is a side sectional view showing one embodiment of a vane type vacuum pump for a vehicle according to the present invention.
  • FIG. 2 is a cross-sectional view taken along line AA of FIG.
  • FIG. 3 is a side view showing a second embodiment of the shaft of the vane type vacuum pump for a vehicle according to the present invention.
  • FIG. 4 is a cross-sectional view taken along the line BB of FIG.
  • FIG. 5 is a side view showing a third embodiment of the vane type vacuum pump for a vehicle according to the present invention.
  • FIG. 6 is a sectional view taken along the line C-C in FIG.
  • FIG. 7 is a side view showing a fourth embodiment of the shaft of the vane type vacuum pump for a vehicle according to the present invention.
  • FIG. 8 is a cross-sectional view taken along the line DD in FIG.
  • FIG. 9 is a side sectional view of a conventional vane vacuum pump for a vehicle.
  • FIG. 10 is a cross-sectional view showing the spline connection between the shaft and the shaft of the conventional vane vacuum pump for a vehicle shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a side sectional view showing one embodiment of a vehicle vane vacuum pump according to the present invention
  • FIG. 2 is a sectional view taken along line A--A in FIG. The joint is shown.
  • the automotive vane vacuum pump of the present invention has the same structure as the automotive vane vacuum pump shown in FIGS. 9 and 10, and has an inlet 1 and an outlet 2. And A sealed space is formed by the cylindrical housing 4 and the bracket 5 connected to each other by bolts 3.
  • the bracket 5 rotatably supports the shaft 21 by a bearing 8.
  • the shaft 21 is provided with a rotatable member 24 eccentrically housed in the housing 4 and rotatable in the housing 4.
  • the mouth 24 is disposed in a radially provided vane groove 10, and the centrifugal force causes the vane groove 10 to project radially outward from the vane groove 10 as the rotor 24 rotates.
  • a vane 11 is provided on the peripheral surface that rotates together with the mouth 24 while sliding on its outer edge. The rotation of the rotor 24 sucks fluid from the inlet 1 and discharges it from the outlet 2. Pump.
  • the shaft 21 is provided with a coupling 13 so that a rotational force can be input from the vehicle side.
  • the shaft 21 is not provided with the splines 14 and 15 as shown in FIGS. 9 and 10, but with a shaft portion corresponding to the entire axial length of the housing 4 of the shaft body 22.
  • Two fin-like projections 23 extending in the radial direction and protruding in the radial direction are provided at radially opposite positions, and are fitted to the mouth 24 in correspondence with the two fin-like projections 23.
  • Two matching axial grooves 25 are provided, so that torque can be transmitted through these fin-shaped protrusions 23 and the axial grooves 25.
  • the number of the fin-like projections 23 may be one or more, as long as sufficient torque transmission and easiness of manufacture are ensured, and the axial length may be arbitrarily set.
  • the fin-like projections 23 shown in FIGS. 1 and 2 can be formed integrally with the shaft body 22 at the time of cold forging of the shaft 21, and when the shaft 21 is a sintered material, It can be formed, or it can be formed by fixing an iron-based sheet metal to the round shaft body 22 by welding.
  • the sheet metal molded product for example, it is preferable to use a molded product in which one end is flat and the other end is formed into a curved portion bent along the surface of the shaft body 22.
  • the mouth 24 is formed and integrally attached to such a shaft 21 by integral construction or integral molding. Due to such a configuration, the gap of the spline connection conventionally used is eliminated, and there is no gap between the shaft body 22 of the shaft 21 and the shaft 24.
  • the shaft can be integrally formed with the insert ⁇ during the construction of Rho-Yu.
  • the mouth may be integrally formed by aluminum die casting or plastic molding, or may be formed by molding with aluminum powder and firing.
  • FIG. 3 shows a second embodiment of another shaft 26 which can be used in the automotive vane vacuum pump of the present invention
  • FIG. 4 shows a cross section taken along line BB of FIG.
  • This shaft 26 differs from the shaft 21 shown in FIGS. 1 and 2 in that the number of the fin-like projections 23 is three, but the other structure is the same.
  • the shaft 26 can be integrally formed with the shaft body 22 and the fin-like projections 23 by cold forging or sintering.
  • FIG. 5 is a side view showing a third embodiment of the vane type vacuum pump for a vehicle according to the present invention
  • FIG. 6 is a cross-sectional view taken along the line CC of FIG.
  • the shaft 28 includes a shaft main body 29 and two fin-shaped protrusions 30 extending radially outward from the shaft main body 29.
  • the fin-shaped projection 30 is formed by two sheet metal molded products 3 1.
  • the semi-cylindrical portion 3 2 of the sheet metal molded product 3 1 is joined to the shaft body 29 by welding 27.
  • Two fin portions 33 extending in opposite directions in the radial direction of the shaft main body 29 from both ends of the two extend in a superposed manner.
  • the number of the fin-shaped protrusions 30 is arbitrary.
  • FIG. 7 is a side view showing a fourth embodiment of a shaft of the vane type vacuum pump for a vehicle according to the present invention
  • FIG. 8 is a cross-sectional view taken along line DD of FIG.
  • the shaft 34 has an axially extending groove 36 formed on the surface of the shaft body 35 of A ⁇ , and a projection 37 provided therebetween.
  • Such a shaft 34 can be manufactured by cutting, cold forging or sintering. Industrial applicability
  • a cylindrical housing having an inlet and an outlet, and a port eccentrically housed in the housing — this port,
  • a pump that has a shaft that rotates and drives the shaft overnight, and a vane that rotates by sliding against the inner peripheral surface of the housing with the rotation of the mouth, and that pumps fluid from the suction port to the discharge port.
  • Protrusions or grooves are provided on the outer periphery of the shaft, and the shaft and the mouth are integrally fixed, so that the weight can be reduced, abnormal wear of the spline fitting part does not occur, and the processing cost is low.
  • a vane vacuum pump for automobiles is provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

A vane type vacuum pump for automobiles, capable of reducing the weight thereof, preventing the occurrence of abnormal wear between shafts and reducing the manufacturing cost to a low level, having a cylindrical housing having suction and discharge ports, a rotor held eccentrically in the housing, a shaft for driving the rotor, and vanes rotated as they slidingly contact an inner circumferential surface of the housing by the rotation of the rotor, a fluid being sent under pressure from the suction port to the discharge port, characterized in that projections or recesses are provided on or in an outer circumferential portion of the shaft to combine the shaft and rotor fixedly into a unitary body by insert molding, the rotor being able to be formed by aluminum die casting, plastic molding and metal firing, the projections or recesses on or in the outer circumferential portion of the shaft being formed as parts integral therewith during the cold forging of the shaft or during the manufacturing of the shaft by firing, or as sheet metal-molded parts fixed to the outer circumferential portion of the shaft by welding, this vacuum pump enabling the housing and rotor to be formed out of the same kind of material.

Description

明 細 書 自動車用べーン式真空ポンプ 技術分野  Description Vane vacuum pump for automotive Technical field

この発明は自動車用べーン式真空ポンプの改良に関するものである。 背景技術  The present invention relates to an improvement of a vane type vacuum pump for an automobile. Background art

図 9は従来の自動車用べーン式真空ポンプの一例を示す側面断面図であり、 図 1 0は図 9に示す従来の自動車用べ一ン式真空ポンプの口一夕とシャフトとの間 のスプライン結合を示す断面図である。 図 9および図 1 0に示すように、 従来の 自動車用べ一ン式真空ポンプは、 吸入口 1と排出口 2とを有し、 互いにボルト 3 により結合された筒状のハウジング 4とブラケット 5とで密閉空間を形成してい る。 ブラケット 5はシャフト 7をペアリング 8により回転可能に支持しており、 このシャフト 7にはハウジング 4内に偏心して収納されハウジング 4内で回転で きる口一夕 9が設けられている。 口一夕 9には図 1 0に示すような放射状に設け られたべ一ン溝 1 0内に配置されて、 口一夕 9の回転に伴い遠心力によりべーン 溝 1 0から径方向外側に突出しようとして、 ハウジング 4の内周面にその外縁で 摺接しながらロータ 9と共に回転するべーン 1 1が設けられていて、 口一夕 9の 回転によって流体を吸入口 1から吸引して排出口 2から吐出圧送する。  FIG. 9 is a side sectional view showing an example of the conventional automobile vane vacuum pump. FIG. 10 is a sectional view of the conventional automobile vane vacuum pump shown in FIG. It is sectional drawing which shows the spline connection of. As shown in FIGS. 9 and 10, the conventional vane-type vacuum pump for automobiles has a suction port 1 and a discharge port 2 and a cylindrical housing 4 and a bracket 5 connected to each other by bolts 3. And form a closed space. The bracket 5 rotatably supports a shaft 7 by a pairing 8. The shaft 7 is provided with a mouth 9 that is eccentrically housed in the housing 4 and can be rotated in the housing 4. The mouth 9 is located in a radially extending vane groove 10 as shown in Fig. 10 and is radially outward from the vane groove 10 due to centrifugal force as the mouth 9 rotates. A vane 11 is provided which rotates with the rotor 9 while sliding on the inner peripheral surface of the housing 4 at the outer edge thereof, and the fluid is sucked from the suction port 1 by the rotation of the mouth 9. Discharge pressure feed from outlet 2.

シャフト 7にはカップリング 1 3が設けられていて、 車両側から回転力を入力 できるようにしてある。 シャフト 7にはまたスプライン 1 4が設けられていて、 口一夕 9のスプライン 1 5と嚙合ってトルクを伝達できるようにされている。 このような自動車用べ一ン式真空ポンプにおいて、 シャフト 7にカップリング 1 3から回転力が伝えられると、 ロータ 9がハウジング 4内で偏心回転し、 この 偏心回転に応じて口一夕 9上のベーン 1 1がロー夕 9から遠心力により径方向外 側に突出しようとしてハウジング 4の内周面上を摺動しながら回転し、 流体を吸 入口 1から吸引して排出口 2から吐出圧送する。  The shaft 7 is provided with a coupling 13 so that a rotational force can be input from the vehicle side. The shaft 7 is also provided with a spline 14 so that torque can be transmitted in correspondence with the spline 15 of the mouth 9. In such a vane type vacuum pump for automobiles, when a rotational force is transmitted to the shaft 7 from the coupling 13, the rotor 9 rotates eccentrically in the housing 4, and the rotor 9 rotates in accordance with the eccentric rotation. The vane 11 rotates from the rotor 9 while sliding on the inner peripheral surface of the housing 4 in an attempt to protrude radially outward due to centrifugal force, sucking fluid from the inlet 1 and sending pressure from the outlet 2 I do.

このような自動車用べ一ン式真空ポンプにおいては、 シャフト 7と口一夕 9と の間はスプライン 1 4および 1 5によって嵌合させられてスプライン結合を構成 しているが、 スプライン 1 4および 1 5は加工コストが高く製品価格が高くなる 。 また、 スプライン 1 4および 1 5によるスプライン結合部はオイルで潤滑され ているが、 オイル性状により異常摩耗を生ずることがある。 スプライン結合は緩 い結合であるので精度が出しにくい。 また、 スプライン結合はスプラインのトル クに対する強度を必要とするため、 強度の大きな材料を使う必要があり、 従来は ロー夕 9として鉄系焼結製品を用い、 シャフト 7には鋼材を使用していたため、 製品の軽量化ができなかった。 また、 従来口一夕 9とハウジング 4とは熱膨張率 の異なる材料を用いていたため、 熱膨張差を吸収するために口一夕とハウジング との間の間隙を大きく取る必要があった。 In such a vane vacuum pump for automobiles, shaft 7 and mouth 9 Are connected by splines 14 and 15 to form a spline connection. However, splines 14 and 15 have high processing costs and high product prices. The spline joints of splines 14 and 15 are lubricated with oil, but abnormal wear may occur due to the oil properties. The spline connection is a loose connection, so it is difficult to obtain accuracy. In addition, since spline coupling requires strength against the torque of the spline, it is necessary to use a material with high strength.Conventionally, iron-based sintered products have been used for the rotor 9, and steel has been used for the shaft 7. As a result, the product could not be reduced in weight. Conventionally, the mouth 9 and the housing 4 are made of materials having different coefficients of thermal expansion, so that it is necessary to make a large gap between the mouth 9 and the housing to absorb the difference in thermal expansion.

この発明は上述の問題点を解決するためになされたもので、 その目的は軽量化 を計ることができシャフト間の異常摩耗が生じないで、 加工コス卜が低くできる 自動車用べ一ン式真空ポンプを提供することにある。 発明の開示  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and its object is to reduce the processing cost by reducing the weight without causing abnormal wear between shafts, and to reduce the machining cost. It is to provide a pump. Disclosure of the invention

上述の目的を達成するために、 本発明にあっては、 吸入口と排出口とを有する 筒状のハウジングと、 上記ハウジング内に偏心して収納されたロー夕と、 この口 —夕を回転駆動するシャフトと、 ロー夕の回転に伴い、 ハウジングの内周面に摺 接して回転するべ一ンとを有し、 吸入口から出口へ流体を圧送するポンプにおい て、 シャフトの外周に突起または溝を設け、 このシャフトとロータとを一体的に 固着したことを特徴とする自動車用べ一ン式真空ポンプにある。  In order to achieve the above object, according to the present invention, there is provided a cylindrical housing having an inlet and an outlet, a rotatable housing eccentrically housed in the housing, and a rotatable drive of the port. A pump that has a shaft that rotates and a vane that slides on the inner peripheral surface of the housing as the rotor rotates, and that pumps fluid from the suction port to the outlet. A vane type vacuum pump for an automobile, wherein the shaft and the rotor are integrally fixed.

口一夕の铸造時にシャフトをインサート成形により一体铸造したものでもよく 、 口一夕はアルミダイキャストにより成形されていてもよく、 ロー夕はプラスチ ヅク成形により一体成形されていてもよく、 口一夕はアルミ粉末により成形後、 焼成して形成したものでもよい。  The shaft may be integrally formed by insert molding at the time of forming the mouth, the mouth may be formed by aluminum die casting, and the shaft may be integrally formed by plastic molding. In the evening, it may be formed by baking after molding with aluminum powder.

また、 シャフトの外周の突起または溝は、 シャフトの冷鍛時に一体的に形成し たものでもよく、 シャフトの外周の突起または溝は、 シャフトの焼成による製作 時に一体的に形成したものでもよい。  Further, the protrusions or grooves on the outer periphery of the shaft may be formed integrally during cold forging of the shaft, and the protrusions or grooves on the outer periphery of the shaft may be formed integrally during production of the shaft by firing.

更に、 シャフトの突起は、 鉄系の板金成形品をシャフトの外周に溶接により固 着して形成したものでも良く、 ハウジングと口一夕とを同種材料にて形成したも のでも良い。 図面の簡単な説明 Furthermore, the protrusion of the shaft is fixed by welding an iron-based sheet metal molding to the outer periphery of the shaft. The housing and the mouth may be formed of the same material. BRIEF DESCRIPTION OF THE FIGURES

図 1はこの発明の自動車用べーン式真空ポンプの一実施形態を示す側断面図で ある。  FIG. 1 is a side sectional view showing one embodiment of a vane type vacuum pump for a vehicle according to the present invention.

図 2は図 1の A— A線に沿った断面図である。  FIG. 2 is a cross-sectional view taken along line AA of FIG.

図 3はこの発明自動車用べ一ン式真空ポンプのシャフトの第 2の実施形態を示 す側面図である。  FIG. 3 is a side view showing a second embodiment of the shaft of the vane type vacuum pump for a vehicle according to the present invention.

図 4は図 3の B— B線に沿った断面図である。  FIG. 4 is a cross-sectional view taken along the line BB of FIG.

図 5はこの発明自動車用べ一ン式真空ポンプのシャフ卜の第 3の実施形態を示 す側面図である。  FIG. 5 is a side view showing a third embodiment of the vane type vacuum pump for a vehicle according to the present invention.

図 6は図 5の C一 C線に沿つた断面図である。  FIG. 6 is a sectional view taken along the line C-C in FIG.

図 7はこの発明自動車用べ一ン式真空ポンプのシャフトの第 4の実施形態を示 す側面図である。  FIG. 7 is a side view showing a fourth embodiment of the shaft of the vane type vacuum pump for a vehicle according to the present invention.

図 8は図 7の D— D線に沿つた断面図である。  FIG. 8 is a cross-sectional view taken along the line DD in FIG.

図 9は従来の自動車用べーン式真空ポンプの側断面図である。  FIG. 9 is a side sectional view of a conventional vane vacuum pump for a vehicle.

図 1 0は図 9に示す従来の自動車用べ一ン式真空ポンプのロー夕とシャフトと の間のスプライン結合を示す断面図である。 発明を実施するための最良の形態  FIG. 10 is a cross-sectional view showing the spline connection between the shaft and the shaft of the conventional vane vacuum pump for a vehicle shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION

本発明をより詳述するために、 添付の図面に従って本発明の実施の形態を説明 する。 以下の説明で従来例と同一の構成部分については同一の符号を付して説明 を省略することがある。  In order to describe the present invention in more detail, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same components as those of the conventional example are denoted by the same reference numerals, and the description may be omitted.

図 1はこの発明の自動車用べーン式真空ポンプの一実施形態を示す側断面図で あり、 図 2は図 1の A— A線に沿った断面図であって、 ロータとシャフトとの結 合部を示している。  FIG. 1 is a side sectional view showing one embodiment of a vehicle vane vacuum pump according to the present invention, and FIG. 2 is a sectional view taken along line A--A in FIG. The joint is shown.

本発明の自動車用べ一ン式真空ポンプは、 図 9及び図 1 0に示す自動車用べ一 ン式真空ポンプと同様の全 ^造を持っていて、 吸入口 1と排出口 2とを有し、 互いにボルト 3により結合された筒状のハウジング 4とブラケヅト 5とで密閉空 間を形成している。 ブラケット 5はシャフト 2 1をベアリング 8により回転可能 に支持しており、 このシャフト 2 1にはハウジング 4内に偏心して収納されハウ ジング 4内で回転できるロー夕 2 4が設けられている。 口一夕 2 4には放射状に 設けられたベーン溝 1 0内に配置されて、 ロータ 2 4回転に伴い遠心力によりべ —ン溝 1 0から径方向外側に突出しようとして、 ハウジング 4の内周面にその外 縁で摺接しながら口一夕 2 4と共に回転するべーン 1 1が設けられていて、 ロー 夕 2 4の回転によって流体を吸入口 1から吸引して排出口 2から吐出圧送する。 シャフト 2 1にはカップリング 1 3が設けられていて、 車両側から回転力を入力 できるようにしてある。 The automotive vane vacuum pump of the present invention has the same structure as the automotive vane vacuum pump shown in FIGS. 9 and 10, and has an inlet 1 and an outlet 2. And A sealed space is formed by the cylindrical housing 4 and the bracket 5 connected to each other by bolts 3. The bracket 5 rotatably supports the shaft 21 by a bearing 8. The shaft 21 is provided with a rotatable member 24 eccentrically housed in the housing 4 and rotatable in the housing 4. The mouth 24 is disposed in a radially provided vane groove 10, and the centrifugal force causes the vane groove 10 to project radially outward from the vane groove 10 as the rotor 24 rotates. A vane 11 is provided on the peripheral surface that rotates together with the mouth 24 while sliding on its outer edge.The rotation of the rotor 24 sucks fluid from the inlet 1 and discharges it from the outlet 2. Pump. The shaft 21 is provided with a coupling 13 so that a rotational force can be input from the vehicle side.

この発明によれば、 シャフト 2 1には図 9および図 1 0に示すごときスプライ ン 1 4および 1 5ではなく、 シャフト本体 2 2のハウジング 4の軸方向全長に対 応するシャフト部分に、 軸方向に延びて径方向に突出した 2本のヒレ状突起 2 3 が半径方向対向位置に設けられていて、 口一夕 2 4にはこの 2つのヒレ状突起 2 3に対応して嵌合し合う 2つの軸方向溝 2 5が設けられていて、 これらのヒレ状 突起 2 3と軸方向溝 2 5とを介してトルクを伝達できるようにしてある。 このヒ レ状突起 2 3は、 十分なトルク伝達および製造の容易性が十分に確保されれば、 1本以上何本でも良いし、 軸方向長さも任意で良い。  According to the present invention, the shaft 21 is not provided with the splines 14 and 15 as shown in FIGS. 9 and 10, but with a shaft portion corresponding to the entire axial length of the housing 4 of the shaft body 22. Two fin-like projections 23 extending in the radial direction and protruding in the radial direction are provided at radially opposite positions, and are fitted to the mouth 24 in correspondence with the two fin-like projections 23. Two matching axial grooves 25 are provided, so that torque can be transmitted through these fin-shaped protrusions 23 and the axial grooves 25. The number of the fin-like projections 23 may be one or more, as long as sufficient torque transmission and easiness of manufacture are ensured, and the axial length may be arbitrarily set.

図 1および図 2に示すヒレ状突起 2 3は、 シャフト 2 1の冷間鍛造時にシャフ ト本体 2 2と一体に作り出すこともでき、 シャフト 2 1が焼結材である場合には 焼結時に形成することもできるし、 丸 のシャフト本体 2 2に鉄系板金 品 を溶接で固着して形成することもできる。板金成形品は、 例えば一端部が平坦で 、 他端部がシャフト本体 2 2の表面に沿って曲げられた湾曲部に成形されたもの を使用すると良い。  The fin-like projections 23 shown in FIGS. 1 and 2 can be formed integrally with the shaft body 22 at the time of cold forging of the shaft 21, and when the shaft 21 is a sintered material, It can be formed, or it can be formed by fixing an iron-based sheet metal to the round shaft body 22 by welding. As the sheet metal molded product, for example, it is preferable to use a molded product in which one end is flat and the other end is formed into a curved portion bent along the surface of the shaft body 22.

口一夕 2 4は、 一体錄造により、 あるいは一体成形により、 このようなシャフ ト 2 1に対して形成し一体的に取付ける。 このような構成のため、 従来用いてい たスプライン結合の間隙が無くなり、 シャフト 2 1のシャフト本体 2 2とロー夕 2 4との間のガ夕は無い。 ロー夕の铸造時にシャフトをィンサ一ト β¾¾により一 体铸造することもできる。 口一夕は、 アルミダイキャストあるいはプラスチック成形により一体成形され ても良いし、 アルミニウム粉末により成形後、 焼成して形成しても良い。 The mouth 24 is formed and integrally attached to such a shaft 21 by integral construction or integral molding. Due to such a configuration, the gap of the spline connection conventionally used is eliminated, and there is no gap between the shaft body 22 of the shaft 21 and the shaft 24. The shaft can be integrally formed with the insert β during the construction of Rho-Yu. The mouth may be integrally formed by aluminum die casting or plastic molding, or may be formed by molding with aluminum powder and firing.

このような自動車用べ一ン式真空ポンプにおいて、 シャフト 2 1にカップリン グ 1 3から回転力が伝えられると、 口一夕 2 4がハウジング 4内の偏心位置で回 転し、 この偏心回転に応じてロータ 2 4上のベーン 1 1はロータ 2 4から遠心力 により径方向外側に突出しようとしてハウジング 4の内周面上を摺動しながら回 転し、 流体を吸入口 1から吸引して排出口 2から吐出圧送する。  In such a vane-type vacuum pump for automobiles, when a rotational force is transmitted to the shaft 21 from the coupling 13, the mouth 24 rotates at an eccentric position in the housing 4, and this eccentric rotation is performed. In response to this, the vanes 11 on the rotor 24 rotate while sliding on the inner peripheral surface of the housing 4 to protrude radially outward from the rotor 24 by centrifugal force, and suck the fluid from the inlet 1. From the discharge port 2.

このような本発明の自動車用べーン式真空ポンプによれば、 シャフト本体 2 2 上に設けたヒレ状突起 2 3のトルク伝達面積を必要な十分な大きさだけ確保する ことが容易になり、 大きなトルク伝達も可能になる。 このため、 従来ロー夕材と して使用されていなかった、 強度の小さいアルミニウム合金、 プラスチヅク材料 も口一夕材として使用可能となり製品を軽量化できる。 また、 ハウジング 4と口 —夕 2 4とを同種の材料で作ると、 熱膨張差が発生しない。  According to such a vane-type vacuum pump for an automobile of the present invention, it is easy to secure a sufficient and sufficient torque transmission area of the fin-like projections 23 provided on the shaft body 22. However, large torque transmission is also possible. For this reason, low strength aluminum alloys and plastic materials, which were not conventionally used as raw materials, can also be used as mouth material, thus reducing the weight of the product. In addition, if the housing 4 and the mouth 4 are made of the same material, no difference in thermal expansion occurs.

また、 スプラインを用いてないので、 加工コストを低減することができ、 スプ ライン結合の間隙によるガ夕が無く、 異常摩耗も発生しない。  Also, since no splines are used, machining costs can be reduced, there is no gap due to gaps in spline connections, and no abnormal wear occurs.

図 3にはこの発明の自動車用べーン式真空ポンプに使用できる別のシャフト 2 6の第 2の実施形態を示し、 図 4には図 3の B— B線に沿った断面を示す。 この シャフト 2 6は図 1及び図 2に示すシャフト 2 1に比べてヒレ状突起 2 3の数が 3本であることが異なるが、 その他は同じ構造である。 このシャフト 2 6は冷間 鍛造あるいは焼結成形によりシャフト本体 2 2とヒレ状突起 2 3とを一体に成形 できる。  FIG. 3 shows a second embodiment of another shaft 26 which can be used in the automotive vane vacuum pump of the present invention, and FIG. 4 shows a cross section taken along line BB of FIG. This shaft 26 differs from the shaft 21 shown in FIGS. 1 and 2 in that the number of the fin-like projections 23 is three, but the other structure is the same. The shaft 26 can be integrally formed with the shaft body 22 and the fin-like projections 23 by cold forging or sintering.

図 5はこの発明自動車用べーン式真空ポンプのシャフ卜の第 3の実施形態を示 す側面図であり、 図 6は図 5の C一 C線に沿った断面図である。 このシャフト 2 8は、 のシャフト本体 2 9と、 シャフト本体 2 9から径方向外側に延びた 2枚のフィン状突起 3 0とを備えている。 フィン状突起 3 0は、 2枚の板金成形 品 3 1により形成されており、 板金成形品 3 1の半円筒部 3 2がシャフト本体 2 9に溶接 2 7により接合され、 この半円筒部 3 2の両端からはシャフト本体 2 9 の径方向に互いに反対方向に延びた 2つのフイン部 3 3が 2枚が重ね合わされて 延びている。 フィン状突起 3 0の数は任意である。 図 7はこの発明自動車用べーン式真空ポンプのシャフトの第 4の実施形態を示 す側面図であり、 図 8は図 7の D— D線に沿った断面図である。 このシャフト 3 4は、 A ^のシャフト本体 3 5の表面に軸方向に延びた溝 3 6を形成して、 そ の間に突起 3 7を設けたものである。 このようなシャフト 3 4は切削加工、 冷間 鍛造あるいは焼結成形により製作できる。 産業上の利用可能性 FIG. 5 is a side view showing a third embodiment of the vane type vacuum pump for a vehicle according to the present invention, and FIG. 6 is a cross-sectional view taken along the line CC of FIG. The shaft 28 includes a shaft main body 29 and two fin-shaped protrusions 30 extending radially outward from the shaft main body 29. The fin-shaped projection 30 is formed by two sheet metal molded products 3 1. The semi-cylindrical portion 3 2 of the sheet metal molded product 3 1 is joined to the shaft body 29 by welding 27. Two fin portions 33 extending in opposite directions in the radial direction of the shaft main body 29 from both ends of the two extend in a superposed manner. The number of the fin-shaped protrusions 30 is arbitrary. FIG. 7 is a side view showing a fourth embodiment of a shaft of the vane type vacuum pump for a vehicle according to the present invention, and FIG. 8 is a cross-sectional view taken along line DD of FIG. The shaft 34 has an axially extending groove 36 formed on the surface of the shaft body 35 of A ^, and a projection 37 provided therebetween. Such a shaft 34 can be manufactured by cutting, cold forging or sintering. Industrial applicability

以上のように、 本発明にかかる自動車用べ一ン式真空ポンプによれば、 吸入口 と排出口とを有する筒状のハウジングと、 ハウジング内に偏心して収納された口 —夕と、 この口一夕を回転駆動するシャフトと、 口一夕の回転に伴い、 ハウジン グの内周面に摺接して回転するべ一ンとを有し、 吸入口から排出口へ流体を圧送 するポンプにおいて、 シャフトの外周に突起または溝を設け、 このシャフトと口 一夕とを一体的に固着したものであるので、 軽量化ができ、 スプライン嵌合部の 異常摩耗が生じないで、 加工コス卜の低くい自動車用べーン式真空ポンプが提供 される。  As described above, according to the vane type vacuum pump for an automobile according to the present invention, a cylindrical housing having an inlet and an outlet, and a port eccentrically housed in the housing — this port, A pump that has a shaft that rotates and drives the shaft overnight, and a vane that rotates by sliding against the inner peripheral surface of the housing with the rotation of the mouth, and that pumps fluid from the suction port to the discharge port. Protrusions or grooves are provided on the outer periphery of the shaft, and the shaft and the mouth are integrally fixed, so that the weight can be reduced, abnormal wear of the spline fitting part does not occur, and the processing cost is low. A vane vacuum pump for automobiles is provided.

Claims

請 求 の 範 囲 The scope of the claims 1 . 吸入口と排出口とを有する筒状のハウジングと、 上記ハウジング内に偏心 して収納されたロー夕と、 このロー夕を回転駆動するシャフトと、 上記口一夕の 回転に伴い、 上記ハウジングの内周面に摺接して回転するべ一ンとを有し、 上記 吸入口から上記排出口へ流体を圧送するポンプにおいて、  1. A cylindrical housing having an inlet and an outlet, a rotatable housing eccentrically housed in the housing, a shaft for driving the rotatable rotatable, and a rotation of the port, A pump that slides on the inner peripheral surface of the housing to rotate and slides the fluid from the suction port to the discharge port. 上記シャフ卜の外周に突起または溝を設け、 このシャフトと上記口一夕とを一 体的に固着したことを特徴とする自動車用べ一ン式真空ポンプ。  A vane-type vacuum pump for an automobile, wherein a projection or a groove is provided on an outer periphery of the shaft, and the shaft and the opening are integrally fixed. 2 . ロータの鎵造時にシャフトをインサート成形により一体铸造したことを特 徴とする請求項 1に記載の自動車用べ一ン式真空ポンプ。 2. The vane type vacuum pump for an automobile according to claim 1, wherein the shaft is integrally formed by insert molding when the rotor is manufactured. 3 . 口一夕はアルミダイキャストにより成形されてなることを特徴とする請求 項 2に記載の自動車用べ一ン式真空ポンプ。 3. The vane vacuum pump for an automobile according to claim 2, wherein the mouth is formed by aluminum die casting. 4 . ロー夕はプラスチック により一体成形されてなることを特徴とする請 求項 2に記載の自動車用ぺーン式真空ポンプ。 4. The vane vacuum pump for automobiles according to claim 2, wherein the rotor is integrally formed of plastic. 5 . 口一夕はアルミ粉末により 後、 焼成して形成してなることを特徴する 請求項 2に記載の自動車用ぺ一ン式真空ポンプ。 5. The vacuum pump for automobiles according to claim 2, wherein the mouth is made of aluminum powder and then fired. 6 . シャフトの外周の突起または溝は、 シャフトの冷鍛時に一体的に形成して なることを特徴とする請求項 1乃至 5のいずれかに記載の自動車用べーン式真空 ポンプ。 6. The vane vacuum pump for an automobile according to any one of claims 1 to 5, wherein the projections or grooves on the outer periphery of the shaft are formed integrally during cold forging of the shaft. 7 . シャフトの外周の突起または溝は、 シャフトの焼成による製作時に一体的 に形成してなることを特徴とする請求項 1乃至 5のいずれかに言 3載の自動車用べ ーン式真空ポンプ。 7. The vane vacuum pump for an automobile according to any one of claims 1 to 5, wherein the protrusions or grooves on the outer periphery of the shaft are integrally formed when the shaft is manufactured by firing. . 8 . シャフトの突起は、 鉄系の板金成形品をシャフトの外周に溶接により固着 して形成してなることを特徴とする請求項 1乃至 5のいずれかに記載の自動車用 ベ一ン式真空ポンプ。 8. The vane-type vacuum for an automobile according to any one of claims 1 to 5, wherein the projection of the shaft is formed by welding an iron-based sheet metal molded product to an outer periphery of the shaft by welding. pump. 9 . ハウジングとロー夕とを同種材料にて形成したことを特徴とする請求項 1 乃至 8のいずれかに言己載の自動車用べーン式真空ポンプ。 9. The vane vacuum pump for an automobile according to any one of claims 1 to 8, wherein the housing and the rotor are formed of the same material.
PCT/JP1998/005642 1998-12-14 1998-12-14 Vane type vacuum pump for automobiles Ceased WO2000036303A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP98959196A EP1055823B1 (en) 1998-12-14 1998-12-14 Vane type vacuum pump for automobiles
DE69839159T DE69839159T2 (en) 1998-12-14 1998-12-14 WING CELLS VACUUM PUMP FOR AUTOMOBILES
KR10-2000-7008554A KR100385683B1 (en) 1998-12-14 1998-12-14 Vehicular vane-type vacuum pump
PCT/JP1998/005642 WO2000036303A1 (en) 1998-12-14 1998-12-14 Vane type vacuum pump for automobiles
TW087120879A TW414837B (en) 1998-12-14 1998-12-15 Vane type vacuum pump for automobile use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/005642 WO2000036303A1 (en) 1998-12-14 1998-12-14 Vane type vacuum pump for automobiles

Publications (1)

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WO2000036303A1 true WO2000036303A1 (en) 2000-06-22

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PCT/JP1998/005642 Ceased WO2000036303A1 (en) 1998-12-14 1998-12-14 Vane type vacuum pump for automobiles

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KR (1) KR100385683B1 (en)
DE (1) DE69839159T2 (en)
TW (1) TW414837B (en)
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EP1055823A4 (en) 2004-05-12
TW414837B (en) 2000-12-11
DE69839159T2 (en) 2009-02-26
EP1055823B1 (en) 2008-02-20
EP1055823A1 (en) 2000-11-29
DE69839159D1 (en) 2008-04-03
KR100385683B1 (en) 2003-05-27
KR20010040678A (en) 2001-05-15

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