CN114423943B - Motor-driven assembly for a vehicle - Google Patents
Motor-driven assembly for a vehicle Download PDFInfo
- Publication number
- CN114423943B CN114423943B CN202080065394.2A CN202080065394A CN114423943B CN 114423943 B CN114423943 B CN 114423943B CN 202080065394 A CN202080065394 A CN 202080065394A CN 114423943 B CN114423943 B CN 114423943B
- Authority
- CN
- China
- Prior art keywords
- assembly
- outer ring
- housing part
- clamping projection
- bearing sleeve
- 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.)
- Active
Links
Classifications
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- 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)
- Support Of The Bearing (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention relates to an electric motor drive 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) fastened in a rotationally fixed manner to a housing part (7) of the assembly (1). In order to create an improved assembly in which the tendency to wear and noise generation 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 areas without significantly affecting the production and assembly.
Description
Technical Field
The present 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 dust collection 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 the housing of the components by means of rolling bearings. However, for reasons of weight, cost or manufacturing technology, the housing is usually made of a relatively soft material, in particular plastic. Due to material technology, assembly or manufacturing 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 rings of the rolling bearings are inserted into 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 A2.
For manufacturing and assembly reasons, the outer ring of the rolling bearing must generally be accommodated in a clearance fit in the bearing sleeve. This type of support has the following drawbacks: the outer ring will rotate together during operation. This may lead to wear of the components and significant noise emissions.
Disclosure of Invention
The object of the present invention is therefore to create an improved assembly in which the tendency to wear and noise generation in the region of the rolling bearing receptacle can be eliminated as cost-effectively as possible without significantly affecting the production and assembly.
According to the invention, this object is achieved by a combination of features according to independent claim 1. The dependent claims present further embodiments and improvements according to the invention.
The invention proposes that the outer ring, in addition to the connection to the bearing sleeve, additionally has a direct force-transmitting connection to the housing part in some areas.
Thereby, the outer ring is reliably locked in the bearing sleeve against undesired rotation together. Wear and noise emissions due to the rotation together are also eliminated. In this case, a tighter fit between the outer ring and the bearing sleeve is not necessary, and manufacturability and assemblability are not adversely affected.
Furthermore, the invention proposes that the housing part has at least one clamping projection which is pressed against the outer ring in the assembled state. In this way, an additional contact point for direct force transmission between the outer ring and the housing can be provided, which is forced during assembly without further measures.
In order to achieve simple and efficient production and assembly, a preferred embodiment of the invention is proposed in which the bearing sleeve has at least one tubular section for receiving the outer ring, which is arranged in a receiving space formed in the housing part and which is clamped radially with its outer side in the receiving space according to a particularly preferred development.
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 against the outer ring in the radial direction, can be arranged in the receiving space in a space-saving manner and at low production costs.
In order to further simplify the manufacture and assembly, an improvement of the invention is proposed: such one or more clamping projections are designed as centripetally projecting projections of one-piece construction with the housing part.
Another embodiment provides that the at least one clamping projection is arranged in the axial direction to press against the outer ring and is preferably designed for this purpose as an axially acting spring eye (Federlasche) which is formed in one piece with the housing part.
In order to be able to achieve the passage of the one or more clamping projections relative to the outer ring in a particularly simple manner, the development of the invention proposes that the tubular section has at least one cutout for this purpose.
A stable and cost-effective construction can be achieved by means of a bearing sleeve made of metal, in particular steel plate, which construction preferably has a clearance fit with respect to the outer ring for easy assembly.
The invention can be used particularly effectively with housing parts made of plastics, in particular fibre-reinforced plastics, for example glass-fibre-reinforced polyamides.
A particularly comprehensive utilization of the noise reduction effect according to the invention can be achieved by 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 type to which a vacuum pump belongs, for example.
Fig. 2 shows a spatially exploded view (a), a sectional view (b), and an enlarged view of the region of the first embodiment of the clamping projection (c) with a single radial action.
Fig. 3 shows a spatially exploded view (a) and a sectional view (b) of the region of a second embodiment with a plurality of radially acting clamping projections.
Fig. 4 shows a spatially exploded view (a) and a sectional view (b) of a region of a further embodiment with a plurality of axially acting clamping projections.
Detailed Description
FIG. 1
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.
The electric drive unit 2 fastened at the housing of the assembly 1 drives two connecting rods via a drive shaft 3 and via an eccentric drive, which connecting rods transmit the movement to two diaphragm units arranged opposite one another. 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 against rotation on the housing part 7 and is engaged in this case by means of the tubular section 9 into the receiving space 10. In the tubular section 9, an outer ring 5 of the rolling bearing 4 is accommodated in a clearance fit, which serves to support the drive shaft 3.
The above materials are exemplary for the 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 is designed approximately pot-shaped together with the wall section 15 and the base section 16. On the wall section 15, a plurality of axially directed ribs 14 are provided which in the assembled state are pressed against the outer lateral surface 11 of the tubular section 9 and thereby clamp the tubular section in the receiving space 10. In addition to the ribs 14, clamping projections 8 are provided inside the receiving space 10, which projections extend significantly farther 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 projection is oriented in the centripetal direction.
The tubular section 9 has a cutout 12 which is penetrated by the clamping projection 8 in the assembled state, so that the tip of the clamping projection 8 is pressed radially directly against the outer ring 5 and thus forms a strip-shaped contact point 13. A direct force transmission is thus achieved between the outer ring 5 and the housing part 7 via the contact point 13.
The axially directed upper side of the clamping projection 8, which is shown in the drawing, is designed to be slightly inclined from its root toward its tip in the direction of the base section 16 in order to simplify the assembly of the rolling bearing 4 by using the clamping projection as an introduction bevel.
FIG. 3
Fig. 3 shows another embodiment of the present invention. Unlike the embodiment according to fig. 2, a plurality of clamping projections 8,8',8″ are provided, which are designed as projections and are arranged in the receiving space 10 at a distance from one another in the circumferential direction. These clamping projections protrude forward less in the radial direction than the single projections described above, but still enable a sufficient clamping action with the outer ring 5 due to the plurality of contact locations 13, 13', 13″ formed. In order to simplify the assembly of the rolling bearing 4, the upper sides of the clamping projections 8,8',8″ are likewise designed to be inclined.
FIG. 4
Fig. 4 shows a further embodiment of the invention, which differs from the variant described above in that it acts on the outer ring 5 in an axial direction instead of in a radial direction. For this purpose, a plurality of clamping projections 8,8',8″ which are located distributed in the circumferential direction and are designed as spring lugs are arranged in the base section 16 of the receiving space 10. In the assembled state, these clamping projections press 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. Driving unit
3. Driving shaft
4. Rolling bearing
5. Outer ring
6. Bearing sleeve
7. Shell member
8. Clamping projection
9. Tubular section
10. Accommodating chamber
11. Side surface
12. Incision
13. Contact position
14. Ribs
15. Wall section
16. Base section
17. Stop piece
Claims (17)
1. An assembly (1) for the motor drive of a vehicle, comprising 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 against rotation on a housing part (7) of the assembly (1), characterized in that the outer ring (5) additionally has a direct force-transmitting connection to the housing part (7) in some regions, wherein at least one clamping projection (8) is provided on the housing part (7), which is pressed against the outer ring (5).
2. Assembly (1) according to claim 1, characterized in that the clamping projection (8) is pressed in a radial direction towards the outer ring (5).
3. Assembly (1) according to claim 1, characterized in that the clamping projection (8) is pressed in the axial direction towards the outer ring (5).
4. Assembly (1) according to claim 1, characterized in that the bearing sleeve (6) has at least one tubular section (9) for accommodating the outer ring (5), wherein the tubular section (9) is arranged in a receiving cavity (10) formed in the housing part (7).
5. Assembly (1) according to claim 4, characterized in that the tubular section (9) is clamped radially with an outer lateral surface (11) in the receiving chamber (10).
6. Assembly (1) according to claim 4 or 5, characterized in that the tubular section (9) has at least one slit (12) for passing through the clamping projection (8).
7. Assembly (1) according to claim 4 or 5, characterized in that at least one clamping projection (8) is arranged in the receiving cavity (10).
8. Assembly (1) according to claim 7, characterized in that a plurality of clamping projections (8, 8',8 ") are arranged in the receiving chamber (10) spaced apart from one another in the circumferential direction.
9. Assembly (1) according to claim 1 or 2, characterized in that at least one clamping projection (8) is designed as a projection of unitary construction with the housing part (7) protruding centripetally forward relative to the outer ring (5).
10. Assembly (1) according to claim 1 or 2, characterized in that at least one clamping projection (8) is designed as a spring eye which acts axially with respect to the outer ring (5) and is constructed in one piece with the housing part (7).
11. Assembly (1) according to claim 1 or 2, characterized in that the bearing sleeve (6) is designed to be made of metal.
12. Assembly (1) according to claim 1 or 2, characterized in that the housing part (7) is designed to be made of plastic.
13. Assembly (1) according to claim 1 or 2, characterized in that the outer ring (5) is accommodated in the bearing sleeve (6) in a clearance fit.
14. The assembly (1) according to claim 1 or 2, wherein the assembly (1) is a vacuum pump.
15. Assembly (1) according to claim 11, characterized in that the bearing sleeve (6) is designed to be made of steel plate.
16. Assembly (1) according to claim 12, characterized in that the plastic is made of a fiber-reinforced plastic.
17. Assembly (1) according to claim 16, characterized in that the fiber reinforced plastic is a glass fiber reinforced polyamide.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019214307.5 | 2019-09-19 | ||
| DE102019214307.5A DE102019214307A1 (en) | 2019-09-19 | 2019-09-19 | Electric motor-driven unit for a vehicle |
| PCT/EP2020/075996 WO2021053077A1 (en) | 2019-09-19 | 2020-09-17 | Electromotively driven assembly for a vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114423943A CN114423943A (en) | 2022-04-29 |
| CN114423943B true 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)
| 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)
| 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 |
| CN103649464B (en) * | 2011-07-08 | 2016-08-24 | 皮尔伯格泵技术有限责任公司 | The vacuum pump being used in automotive field |
| 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 |
-
2019
- 2019-09-19 DE DE102019214307.5A patent/DE102019214307A1/en active Pending
-
2020
- 2020-09-17 CN CN202080065394.2A patent/CN114423943B/en active Active
- 2020-09-17 WO PCT/EP2020/075996 patent/WO2021053077A1/en active Application Filing
Patent Citations (5)
| 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 |
|---|---|
| DE102019214307A1 (en) | 2021-03-25 |
| WO2021053077A1 (en) | 2021-03-25 |
| CN114423943A (en) | 2022-04-29 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230308 Address after: Hannover Applicant after: Continental Automotive Technology Co.,Ltd. Address before: Frankfurt, Germany Applicant before: CONTINENTAL TEVES AG & Co. OHG |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |