WO2000036303A1 - Vane type vacuum pump for automobiles - Google Patents
Vane type vacuum pump for automobiles Download PDFInfo
- 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
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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1998/005642 WO2000036303A1 (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 |
EP98959196A EP1055823B1 (en) | 1998-12-14 | 1998-12-14 | Vane type vacuum pump for automobiles |
KR10-2000-7008554A KR100385683B1 (en) | 1998-12-14 | 1998-12-14 | Vehicular vane-type vacuum pump |
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)
Publication Number | Publication Date |
---|---|
WO2000036303A1 true WO2000036303A1 (en) | 2000-06-22 |
Family
ID=14209603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/005642 WO2000036303A1 (en) | 1998-12-14 | 1998-12-14 | Vane type vacuum pump for automobiles |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1055823B1 (en) |
KR (1) | KR100385683B1 (en) |
DE (1) | DE69839159T2 (en) |
TW (1) | TW414837B (en) |
WO (1) | WO2000036303A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1193396A2 (en) * | 2000-10-02 | 2002-04-03 | Mitsubishi Denki Kabushiki Kaisha | Automotive vane-type vacuum pump |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10059275A1 (en) * | 1999-12-23 | 2001-06-28 | Luk Automobiltech Gmbh & Co Kg | Vacuum pump especially for motor vehicle's servo brake system has rotor or vane consisting of aluminum or aluminum alloy, constructed in one piece, and with rotor manufactured through non-cutting forming |
FR2833048B1 (en) | 2001-11-30 | 2004-01-16 | Rene Snyders | ROTATING VOLUMETRIC MACHINE OPERATING WITHOUT FRICTION IN THE WORKING VOLUME AND SUPPORTING HIGH PRESSURES AND TEMPERATURES |
DE102004034921B9 (en) * | 2004-07-09 | 2006-04-27 | Joma-Hydromechanic Gmbh | A single-blade |
DE102004034925B3 (en) * | 2004-07-09 | 2006-02-16 | Joma-Hydromechanic Gmbh | A single-blade |
GB2473824B (en) * | 2009-09-23 | 2015-12-23 | Edwards Ltd | Preventing pump parts joining by corrosion |
DE102014107735B4 (en) * | 2014-06-02 | 2018-04-19 | Schwäbische Hüttenwerke Automotive GmbH | Wing with axial seal |
CN105626533B (en) * | 2015-12-25 | 2017-12-15 | 常州市武进广宇花辊机械有限公司 | Rotary-vane vaccum pump |
EP3550148A1 (en) * | 2018-04-06 | 2019-10-09 | Entecnia Consulting, S.L.U. | Rotary pump |
EP3636944B1 (en) * | 2018-10-09 | 2023-06-28 | Vitesco Technologies GmbH | Rotor |
KR102522994B1 (en) | 2021-10-28 | 2023-04-19 | 엘지전자 주식회사 | Rotary compressor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55135229A (en) * | 1979-04-11 | 1980-10-21 | Yunikura:Kk | Fixing method of rotor to drive shaft |
JPH08326673A (en) * | 1995-06-05 | 1996-12-10 | Aisan Ind Co Ltd | Vane pump |
JPH0951958A (en) * | 1995-08-14 | 1997-02-25 | Nippon Kikai Kogyo Kk | Vacuum pump for priming fire pump |
-
1998
- 1998-12-14 EP EP98959196A patent/EP1055823B1/en not_active Expired - Lifetime
- 1998-12-14 WO PCT/JP1998/005642 patent/WO2000036303A1/en active IP Right Grant
- 1998-12-14 KR KR10-2000-7008554A patent/KR100385683B1/en not_active IP Right Cessation
- 1998-12-14 DE DE69839159T patent/DE69839159T2/en not_active Expired - Lifetime
- 1998-12-15 TW TW087120879A patent/TW414837B/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55135229A (en) * | 1979-04-11 | 1980-10-21 | Yunikura:Kk | Fixing method of rotor to drive shaft |
JPH08326673A (en) * | 1995-06-05 | 1996-12-10 | Aisan Ind Co Ltd | Vane pump |
JPH0951958A (en) * | 1995-08-14 | 1997-02-25 | Nippon Kikai Kogyo Kk | Vacuum pump for priming fire pump |
Non-Patent Citations (1)
Title |
---|
See also references of EP1055823A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1193396A2 (en) * | 2000-10-02 | 2002-04-03 | Mitsubishi Denki Kabushiki Kaisha | Automotive vane-type vacuum pump |
EP1193396A3 (en) * | 2000-10-02 | 2003-07-30 | Mitsubishi Denki Kabushiki Kaisha | Automotive vane-type vacuum pump |
Also Published As
Publication number | Publication date |
---|---|
EP1055823A4 (en) | 2004-05-12 |
EP1055823B1 (en) | 2008-02-20 |
DE69839159D1 (en) | 2008-04-03 |
TW414837B (en) | 2000-12-11 |
EP1055823A1 (en) | 2000-11-29 |
KR100385683B1 (en) | 2003-05-27 |
DE69839159T2 (en) | 2009-02-26 |
KR20010040678A (en) | 2001-05-15 |
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