CN114423943A - Motor-driven assembly for vehicle - Google Patents

Motor-driven assembly for vehicle Download PDF

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Publication number
CN114423943A
CN114423943A CN202080065394.2A CN202080065394A CN114423943A CN 114423943 A CN114423943 A CN 114423943A CN 202080065394 A CN202080065394 A CN 202080065394A CN 114423943 A CN114423943 A CN 114423943A
Authority
CN
China
Prior art keywords
assembly
outer ring
housing part
clamping
clamping lug
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.)
Granted
Application number
CN202080065394.2A
Other languages
Chinese (zh)
Other versions
CN114423943B (en
Inventor
P·维贝尔
M·于尔根宁
M·吕费尔
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.)
Continental Automotive Technologies GmbH
Original Assignee
Continental Teves AG and Co OHG
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 Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of CN114423943A publication Critical patent/CN114423943A/en
Application granted granted Critical
Publication of CN114423943B publication Critical patent/CN114423943B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/14—Provisions for readily assembling or disassembling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/06—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having tubular flexible members
    • F04B45/067—Pumps having electric drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067—Fixing them in a housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Support Of The Bearing (AREA)

Abstract

The invention relates to an electric motor-driven assembly (1) for a vehicle, comprising at least one electric drive unit (2), the drive shaft (3) of which is supported by at least one rolling bearing (4), the outer ring (5) of which is accommodated in a bearing sleeve (6) which is secured in a rotationally fixed manner to a housing part (7) of the assembly (1). In order to provide an improved assembly in which the tendency to wear and the generation of noise in the region of the rolling bearing receptacle can be eliminated as cost-effectively as possible, it is proposed according to the invention that the outer ring (5) additionally has a direct force-transmitting connection to the housing part (7) in some regions without significantly affecting the production and assembly.

Description

Motor-driven assembly for vehicle
Technical Field
The invention relates to an electric motor-driven assembly for a vehicle, in particular a vacuum pump, for example for supplying a pneumatic brake booster or a brake vacuum system.
Background
Modern vehicles have a plurality of components which are driven by an electric drive unit or an electric motor via rotating drive shafts which are supported in their housings by rolling bearings. For reasons of weight, cost or manufacturing technology, however, the housing is usually made of a relatively soft material, in particular plastic. For reasons of material technology, assembly or production conditions, it is therefore often not possible to directly accommodate the rolling bearing in the housing. To solve this problem, it is known that: the outer ring of the rolling bearing is seated in these bearing sleeves using special bearing sleeves, so that the bearing forces are introduced into the housing via the bearing sleeves.
As an example of the related art, reference is made to a motor-pump assembly according to WO 2016/026809 a 2.
For reasons of manufacturing and assembly, the outer ring of the rolling bearing must usually be accommodated in the bearing sleeve with a clearance fit. This type of support has the following disadvantages: the outer ring will rotate together during operation. This may result in wear of components and significant noise emissions.
Disclosure of Invention
The object of the present invention is therefore to provide an improved assembly in which the tendency to wear and the generation of noise in the region of the roller bearing receptacle can be eliminated as cost-effectively as possible without the production and assembly being significantly impaired in this case.
According to the invention, this object is achieved by the combination of features according to independent claim 1. The dependent claims present further embodiments and further developments according to the invention.
The invention proposes that the outer ring, in addition to the connection to the bearing sleeve, also has a connection in some areas for direct force transmission to the housing part.
Thereby, the outer ring is reliably locked in the bearing sleeve against undesired rotation together. Wear and noise emissions due to rotation together are also eliminated. In this case, a tight fit between the outer ring and the bearing sleeve does not have to be selected, nor is the manufacturability and the assembly behavior adversely affected.
The invention further provides that the housing part has at least one clamping projection which is pressed against the outer ring in the assembled state. In this way, additional contact points for the direct transmission of force between the outer ring and the housing can be provided, which contact points are forced upon assembly without further measures.
In order to achieve simple and efficient production and assembly, a preferred embodiment of the invention provides that the bearing cartridge has at least one tubular section for receiving the outer ring, which is arranged in a receiving space formed in the housing part, and according to a particularly preferred development, which is radially clamped with its outer side in the receiving space.
According to both embodiments, one or more clamping projections which are spaced apart from one another in the circumferential direction and which are pressed in the assembled state in the radial direction against the outer ring can be arranged in the receiving space in a space-saving and cost-effective manner in terms of production.
In order to further simplify the production and assembly, an improvement of the invention is proposed: such one or more clamping lugs are designed as projections which project forward in the direction of the center and are formed integrally with the housing part.
A further embodiment provides that the at least one clamping lug is arranged in the axial direction so as to press against the outer ring and for this purpose is preferably designed as an axially acting spring lug (Federlasche) which is formed integrally with the housing part.
In order to be able to carry out the passage of the clamping lug or lugs relative to the outer ring in a particularly simple manner, a development of the invention provides that the tubular section has at least one cutout for this purpose.
A stable and cost-effective construction can be achieved by means of the bearing sleeve made of metal, in particular steel plate, which preferably has a clearance fit relative to the outer ring that facilitates assembly.
The invention can be used particularly effectively with housing parts made of plastic, in particular fiber-reinforced plastic, for example glass fiber-reinforced polyamide.
A particularly comprehensive utilization of the noise reduction effect of the invention can be achieved by means of a vacuum pump which is connected to other acoustically effective components by means of a sound-conducting pneumatic connection.
Drawings
The invention is explained in detail below with the aid of the drawing. In the drawings:
fig. 1 shows a motor-driven assembly of the generic type, for example a vacuum pump.
Fig. 2 shows a spatially exploded view (a), a sectional view (b) and an enlarged view of the region of the first embodiment with a single radially acting clamping lug (c).
Fig. 3 shows a spatially exploded view (a) and a sectional view (b) of the region of the second embodiment with a plurality of radially acting clamping lugs.
Fig. 4 shows a spatially exploded view (a) and a sectional view (b) of the region of a further embodiment with a plurality of axially acting clamping lugs.
Detailed Description
FIG. 1 shows a schematic view of a
Fig. 1 shows an assembly 1 of the generic type, for example a vacuum pump, for supplying a pneumatic brake booster for a hydraulic brake system of a motor vehicle.
An electric drive unit 2 fastened to the housing of the assembly 1 drives two connecting rods, which transmit the movement to two diaphragm units arranged opposite one another, via a drive shaft 3 and via an eccentric drive. A receiving space 10 is formed in the housing part 7 made of plastic. A tubular section 9 is formed on the bearing sleeve 6 made of steel plate. The bearing sleeve 6 is secured in a rotationally fixed manner on the housing part 7 and is engaged in the receiving space 10 by the tubular section 9. In the tubular section 9, an outer ring 5 of the rolling bearing 4 is received in a clearance fit, which outer ring serves to support the drive shaft 3.
The above materials are exemplary for preferred application examples, other materials are allowed to be selected within the present invention.
FIG. 2
Fig. 2 shows a detail of a first embodiment according to the invention. The receiving space 10 together with the wall section 15 and the base section 16 is designed substantially in the shape of a pot. On the wall section 15, axially oriented ribs 14 are provided, which in the assembled state are pressed against the outer side 11 of the tubular section 9 and thereby clamp the tubular section in the receiving space 10. In addition to the ribs 14, a clamping lug 8 is provided inside the receiving space 10, which clamping lug projects significantly further inward than the ribs 14. In the exemplary embodiment shown, the clamping projection 8 is designed as a wedge-shaped projection formed on the housing part 7, the tip of which is oriented in the centripetal direction.
The tubular section 9 has a cutout 12 which is penetrated in the assembled state by the clamping lug 8, so that the tip of the clamping lug 8 is pressed radially directly against the outer ring 5 and thereby forms a strip-shaped contact point 13. Thus, a direct force transmission is achieved between the outer ring 5 and the housing part 7 via the contact points 13.
The axially directed upper side of the clamping lug 8, in the drawing, is designed, from its root to its tip, to be slightly inclined in the direction of the base section 16, in order to simplify the assembly of the rolling bearing 4 by using the clamping lug as a lead-in ramp.
FIG. 3
Fig. 3 shows another embodiment of the present invention. In contrast to the embodiment according to fig. 2, a plurality of clamping lugs 8, 8', 8 ″ designed in the form of a projection are provided, which are arranged in the receiving space 10 at a distance from one another in the circumferential direction. These clamping projections project less forward in the radial direction than the single projection described above, but nevertheless enable a sufficient clamping action with the outer ring 5 due to the multiple contact locations 13, 13', 13 ″ formed. In order to simplify the assembly of the rolling bearing 4, the upper sides of the clamping lugs 8, 8', 8 ″ are likewise designed to be inclined.
FIG. 4
Fig. 4 shows another embodiment of the invention, which differs from the above-described variant in that it acts on the outer ring 5 in the axial direction instead of in the radial direction. For this purpose, a plurality of clamping projections 8, 8', 8 ″ which are positioned distributed over the circumference and are designed as spring lugs are arranged in the base section 16 of the receiving chamber 10. In the assembled state, these clamping projections are pressed axially against the edge region of the outer ring 5 and clamp the entire rolling bearing 4 against a stop 17 provided at the drive shaft 4.
List of reference numerals
1 assembly
2 drive unit
3 drive shaft
4 rolling bearing
5 outer ring
6 bearing sleeve
7 shell component
8 clamping lug
9 tubular section
10 accommodating cavity
11 side surface
12 cuts
13 contact position
14 Ribs
15 wall section
16 base section
17 stop

Claims (15)

1. An electric motor-driven assembly (1) for a vehicle, having at least one electric drive unit (2), the drive shaft (3) of which is supported by means of at least one rolling bearing (4), the outer ring (5) of which is accommodated in a bearing sleeve (6) which is secured in a rotationally fixed manner to a housing part (7) of the assembly (1), characterized in that the outer ring (5) additionally has a connection in some regions which is directly force-transmitting to the housing part (7).
2. Assembly (1) according to claim 1, characterized in that at least one clamping lug (8) is present on the housing part (7), which clamping lug is pressed against the outer ring (5).
3. Assembly (1) according to claim 2, wherein the clamping protrusions (8) are pressed in radial direction towards the outer ring (5).
4. Assembly (1) according to claim 2, characterized in that the clamping lug (8) is pressed in axial direction towards the outer ring (5).
5. Assembly (1) according to at least one of the preceding claims, characterized in that the bearing cartridge (6) has at least one tubular section (9) for accommodating the outer ring (5), wherein the tubular section (9) is arranged in an accommodating chamber (10) formed in the housing part (7).
6. Assembly (1) according to claim 5, characterized in that said tubular section (9) is radially clamped in said housing cavity (10) with an outer lateral surface (11).
7. Assembly (1) according to at least one of claims 5 or 6, characterized in that the tubular section (9) has at least one cutout (12) for the passage of a clamping lug (8).
8. Assembly (1) according to at least one of claims 5 to 7, characterized in that at least one clamping lug (8) is arranged in the receiving chamber (10).
9. Assembly (1) according to claim 8, characterized in that a plurality of clamping projections (8, 8', 8 ") are arranged in the receiving chamber (10) spaced apart from each other in the circumferential direction.
10. Assembly (1) according to at least one of the preceding claims, characterized in that at least one clamping lug (8) is designed as a projection, which projects centripetally forward with respect to the outer ring (5) and is constructed in one piece with the housing part (7).
11. Assembly (1) according to at least one of the preceding claims, characterized in that at least one clamping lug (8) is designed as a spring lug which acts axially with respect to the outer ring (5) and is constructed integrally with the housing part (7).
12. The assembly (1) according to at least one of the preceding claims, characterized in that the bearing cartridge (6) is designed to be made of metal, in particular of steel plate.
13. The assembly (1) according to at least one of the preceding claims, characterized in that the housing part (7) is designed to be made of plastic, in particular of fiber-reinforced plastic, in particular of glass fiber-reinforced polyamide.
14. Assembly (1) according to at least one of the preceding claims, characterized in that the outer ring (5) is accommodated in the bearing cartridge (6) in a clearance-fit manner.
15. Assembly (1) according to at least one of the preceding claims, characterized in that the assembly (1) is a vacuum pump.
CN202080065394.2A 2019-09-19 2020-09-17 Motor-driven assembly for a vehicle Active CN114423943B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019214307.5A DE102019214307A1 (en) 2019-09-19 2019-09-19 Electric motor-driven unit for a vehicle
DE102019214307.5 2019-09-19
PCT/EP2020/075996 WO2021053077A1 (en) 2019-09-19 2020-09-17 Electromotively driven assembly for a vehicle

Publications (2)

Publication Number Publication Date
CN114423943A true CN114423943A (en) 2022-04-29
CN114423943B CN114423943B (en) 2023-09-19

Family

ID=72615836

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202080065394.2A Active CN114423943B (en) 2019-09-19 2020-09-17 Motor-driven assembly for a vehicle

Country Status (3)

Country Link
CN (1) CN114423943B (en)
DE (1) DE102019214307A1 (en)
WO (1) WO2021053077A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1740566A (en) * 2004-08-26 2006-03-01 Ulvac机工株式会社 Diaphragm vacuum pump
WO2012110384A1 (en) * 2011-02-16 2012-08-23 Oerlikon Leybold Vacuum Gmbh Bearing arrangement for rapidly rotating shafts of vacuum pumps
CN102939468A (en) * 2010-03-17 2013-02-20 Zf操作系统有限公司 Power steering system
CN109424653A (en) * 2017-09-05 2019-03-05 舍弗勒技术股份两合公司 Bearing unit

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481655A (en) * 1967-11-15 1969-12-02 Ibm Bearing retainer and mount
FR2781747B1 (en) * 1998-07-31 2000-09-22 Lemforder Nacam Sa ASSEMBLY OF A CONTROL ASSEMBLY WITH A MOTOR VEHICLE STEERING COLUMN
FR2824367B1 (en) * 2001-05-04 2003-07-18 Roulements Soc Nouvelle ASSEMBLY COMPRISING AN INSTRUMENT BEARING AND A HOUSING ASSOCIATED BY A SLEEVE PIECE
DE102007005223A1 (en) * 2006-02-10 2007-09-13 Continental Teves Ag & Co. Ohg Motor-pump unit
WO2013007278A1 (en) * 2011-07-08 2013-01-17 Pierburg Pump Technology Gmbh Vacuum pump for use in the automotive sector
TWI477696B (en) * 2011-09-23 2015-03-21 Wen San Chou Air compressor transmission mechanism
DE102013011102A1 (en) * 2013-07-03 2015-01-08 Daimler Ag Storage arrangement of a shaft on a housing for a machine
DE102014216721A1 (en) * 2014-08-22 2016-02-25 Continental Teves Ag & Co. Ohg Electric motor-pump unit
JP6784587B2 (en) * 2016-12-20 2020-11-11 Ｋｙｂ株式会社 Power steering device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1740566A (en) * 2004-08-26 2006-03-01 Ulvac机工株式会社 Diaphragm vacuum pump
CN102939468A (en) * 2010-03-17 2013-02-20 Zf操作系统有限公司 Power steering system
WO2012110384A1 (en) * 2011-02-16 2012-08-23 Oerlikon Leybold Vacuum Gmbh Bearing arrangement for rapidly rotating shafts of vacuum pumps
CN103370553A (en) * 2011-02-16 2013-10-23 厄利孔莱博尔德真空技术有限责任公司 Bearing arrangement for rapidly rotating shafts of vacuum pumps
CN109424653A (en) * 2017-09-05 2019-03-05 舍弗勒技术股份两合公司 Bearing unit

Also Published As

Publication number Publication date
WO2021053077A1 (en) 2021-03-25
CN114423943B (en) 2023-09-19
DE102019214307A1 (en) 2021-03-25

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Applicant before: CONTINENTAL TEVES AG & Co. OHG

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