CN116470686A - Electric drive motor - Google Patents

Electric drive motor Download PDF

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Publication number
CN116470686A
CN116470686A CN202310038093.6A CN202310038093A CN116470686A CN 116470686 A CN116470686 A CN 116470686A CN 202310038093 A CN202310038093 A CN 202310038093A CN 116470686 A CN116470686 A CN 116470686A
Authority
CN
China
Prior art keywords
bearing
heat shield
drive motor
connection plate
locking elements
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.)
Pending
Application number
CN202310038093.6A
Other languages
Chinese (zh)
Inventor
U·罗斯勒
M·曼尼卡姆
M·沃尔默
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN116470686A publication Critical patent/CN116470686A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/163—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at only one end of the rotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
    • B62D5/0406—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box including housing for electronic control unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F16C19/525—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to temperature and heat, e.g. insulation
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • 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
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/20—Thermal properties
    • F16C2202/22—Coefficient of expansion
    • 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
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/20—Alloys based on aluminium
    • 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
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/76—Positive connections with complementary interlocking parts with tongue and groove or key and slot
    • 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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Abstract

The invention relates to an electric drive motor having an end-side connection plate, which is provided with bearing blocks for receiving bearings for a rotor shaft, wherein the bearing blocks in the connection plate have form-locking elements distributed over their circumference, which radially engage around the bearings. The heat shield is placed on the end face of the connecting plate, which is likewise provided with a bearing seat for receiving the bearing and has mating form-locking elements distributed over its circumference for surrounding the bearing, wherein in the assembled state the mating form-locking elements in the heat shield and the form-locking elements in the connecting plate are in form-locking in the circumferential direction.

Description

Electric drive motor
Technical Field
The present invention relates to an electric drive motor.
Background
The drive device known from DE 102009001419A1 comprises an electric drive motor, which is produced as an inner rotor motor. The stator is accommodated in a motor cartridge which is enclosed on the end side by a flange, wherein a first flange receives an electronic unit for controlling the drive motor and an opposite second flange is part of a steering gear, by means of which the drive movement of the motor for servo assistance is fed into the steering system of the vehicle.
The motor cylinder is supported on the end flange by a bearing cap. Between the motor cylinder and the surrounding housing sleeve, decoupling means are present, by means of which an axial relative movement between the motor cylinder and the housing sleeve can take place.
A drive device with an electric drive motor is also known from DE102014205582A1, which is accommodated in a motor cartridge, wherein the motor cartridge is arranged in a housing.
Disclosure of Invention
The electric drive motor according to the invention is preferably produced as an inner rotor motor. The drive motor is, for example, an electronically commutated motor with permanent magnets or aluminum or copper cages on the armature shaft of the rotor and energizable coils on the stator. The drive motor can be used, for example, in a steering system of a vehicle as a servo-assistance device, by means of which an assistance torque is fed into the steering system.
The terms "axial", "radial" and "circumferential direction" as used in the following description and claims relate to the longitudinal axis of the electric drive motor, which at the same time forms the rotational axis of the rotor. "axial" means along the longitudinal axis of the drive motor, "radial" means orthogonal to said longitudinal axis and "circumferential" means around said longitudinal axis.
The electric drive motor has an end-side connection plate, via which coils on the stator are actuated and which is provided with bearing blocks for receiving bearings for the rotor shaft. The bearing seat in the connecting plate has a plurality of form-locking elements distributed over its circumference, which radially engage the bearing, so that the bearing is arranged radially inside the form-locking elements in the bearing seat.
A heat shield is arranged on the end face of the connecting plate, which heat shield serves for heat dissipation. The heat shield is preferably fabricated as a passive component in which heat is dissipated through the surface of the heat shield. The heat shield is likewise provided with a bearing seat for receiving the bearing and has mating form-locking elements distributed over its circumference for radially surrounding the bearing. In the assembled state, the bearing seats are advantageously arranged concentrically to one another and the mating form-locking elements in the heat shield and the form-locking elements in the connecting plate are in form-locking in the circumferential direction.
This embodiment has various advantages. On the one hand, the bearing is also ensured to remain in its position in the bearing seat of the connecting plate without a heat shield during transport of the electric drive motor. The bearing is preferably accommodated in a form-locking and/or force-locking manner, in particular in a friction-locking manner, in the bearing seat of the connecting plate, so that the bearing remains in the drive motor and is not lost in the absence of the heat shield during transport. During assembly of the drive motor and the heat shield, the bearing also occupies its defined position in the bearing seat of the connection plate.
On the other hand, after the installation of the heat shield on the drive motor, the bearing is located in the bearing seat of the heat shield, so that heat can be dissipated directly through the heat shield outwards and the connection plate is only slightly affected by heat. In particular, in the embodiment of the connecting plate as a plastic component, which is preferably produced by injection molding, the plastic material of the connecting plate is not subject to harmful thermal influences.
Advantageously, the form-locking elements in the connection plate have an inner diameter which is at least slightly larger than the mating form-locking elements in the heat shield. In this embodiment, in the assembled state, the bearing seat of the heat shield is located radially inside the bearing seat of the connecting plate, which is engaged. Only a small contact surface is present between the bearing and the form-locking element in the connecting plate, which is in form-locking with the counterpart form-locking element in the heat shield in the circumferential direction. The bearing housing of the heat shield is in direct contact with the bearing and absorbs heat generated during operation.
According to a further advantageous embodiment, the form-locking elements in the connecting plate are designed as axially protruding form-locking fingers, and the corresponding form-locking elements of the heat shield, which cooperate in a form-locking manner in the circumferential direction, are designed as form-locking slots into which the form-locking fingers of the connecting plate protrude after assembly. The shaping fingers, for example six shaping fingers, are arranged uniformly distributed over the circumference, and the shaping fingers are provided with the same number of shaping slots, which are likewise uniformly distributed over the circumference. Both the forming fingers and the forming slit extend along an axial projection or an axial recess in the associated component.
An embodiment is also possible in which the form-locking elements in the connecting plate are configured as shaped slits and the corresponding form-locking elements of the heat shield, which cooperate in a form-locking manner in the circumferential direction, are configured as shaped fingers.
According to a further advantageous embodiment, the bearing seats in the connecting plate are configured cylindrically. The bearing seat in the heat shield can also be configured cylindrically. The cross-sectional shape of one or both bearing blocks may also be polygonal in profile, for example hexagonal. Furthermore, a hybrid embodiment of a cylinder or a polygon, for example, a polygonal cross-sectional shape of a bearing seat in the heat shield with a cylindrical outer surface and a cylindrical cross-sectional shape of a bearing seat in the connecting plate, is conceivable.
The same embodiment of the bearing seats in the connection plate and the heat shield allows the axial insertion of these bearing seats into one another, wherein the bearing is enclosed by the two bearing seats. The bearing seats in the connection plate preferably have a larger diameter than the bearing seats in the heat shield.
According to a further advantageous embodiment, the bearing seats in the connection plate are formed in the form of recesses in the axial direction and the bearing seats in the heat shield are formed in the form of projections in the axial direction. In the assembled state, the projections in the heat shield project axially into the recesses in the connecting plate. Due to the recess in the connecting plate no additional structural space is required for receiving the bearing.
In principle, an opposite embodiment is also conceivable in which the bearing seats in the connection plate are formed in the form of projections in the axial direction and the bearing seats in the heat shield are formed in the form of recesses in the axial direction.
According to yet another advantageous embodiment, a spring element is arranged in a bearing seat in the connecting plate, on which spring element the bearing is axially supported. If necessary, the spring element can press the bearing against a support section which is formed in particular on the heat shield, preferably on the mating form-locking element. Axial play of the bearing is avoided due to the spring force acting on the bearing.
Advantageously, the connection plate is formed as a plastic component which can be produced by injection molding, while the heat shield is produced as a metal component, for example from aluminum. The embodiment of the heat shield as a metal member achieves high heat resistance while heat dissipation is good. Furthermore, high forces can be absorbed by the heat shield. For example, the drive motor can be fastened via the heat shield to a support element, for example to a steering gear housing of a steering system in a vehicle.
The electric drive motor can be part of a drive device that includes a drive motor received in a motor cartridge and a housing that receives the motor cartridge.
In addition to the electric drive motor, the drive device also comprises a housing in which the drive motor is received. The housing is formed, for example, in a pot-shaped manner.
The stator and rotor of the drive motor can be received in a motor cartridge, which has the function of a motor housing and which is enclosed by the housing. The motor plate occupies both the end face of the motor cartridge located inside and the end face of the housing located outside.
Drawings
Other advantages and suitable embodiments can be taken from the other claims, the description of the figures and the accompanying drawings. Wherein:
fig. 1 shows a longitudinal section through an electric drive motor, on one end side of which a heat shield is arranged, which heat shield rests on a connection plate, wherein a bearing is received between the heat shield and the connection plate,
figure 2 shows a perspective view of the connection plate,
figure 3 shows a perspective view of the heat shield,
figure 4 shows a section through the web and the heat shield in a state of engagement with each other,
figure 5 shows a heat shield in another embodiment,
figure 6 shows a connection plate in another embodiment,
FIG. 7 illustrates a heat shield in yet another embodiment.
In the drawings, like elements are provided with like reference numerals.
Detailed Description
Fig. 1 shows an electric drive motor 2 which is part of a drive device 1 having a pot-shaped housing 3, in which the drive motor 1 is accommodated. The components of the drive motor 2 with the stator and the built-in rotor are received in a motor cartridge 4, which has the function of a motor housing, inside the housing 2.
The electric drive motor 2 is embodied as an electronically commutated electric motor. The stator 5 receives energizable coils 10, and the rotor with rotor shaft 6 is advantageously a base of permanent magnets. The longitudinal and rotational axes of the rotor shaft 6 are denoted by reference numeral 7. The motor housing 4 is connected on one end side to a bearing cap 8 which accommodates a bearing 9 (a bearing), which can be configured, for example, as a stationary bearing. On the axially opposite end face, a connecting plate 11 for actuating the coils 10 on the stator 5 is provided on the motor housing 4. On the axially outer side of the web 11, a heat shield 12 is located, which rests on the open end face of the pot-shaped housing 3. The connection plate 11 is made of plastic, and the heat shield 12 is made of metal, such as aluminum. Between the web 11 and the heat shield 12, a second bearing 13 (B bearing) is provided, which is designed as a fixed bearing, wherein embodiments can also be considered as floating bearings if necessary. The bearing 13 is supported in the axial direction by a spring element 14 which is seated in a bearing seat of the connecting plate 11.
As can be seen from the detail view of the connection plate 11 shown in fig. 2, the connection plate 11 has a central axial recess which forms a bearing seat 15 for receiving the bearing 13. The bearing support 15 is formed in a cylindrical manner and has radially inwardly projecting form-locking elements 16 on its inner wall, which are formed as axial form-locking fingers. Six form-locking elements 16 are present in total distributed at uniform angular intervals over the circumference. The form-locking element 16 engages around the bearing 13 and exerts a friction force on the bearing 13, so that the bearing 13 is reliably received in the connecting plate 11, for example for transport purposes, even when the heat shield 12 is not yet installed.
In fig. 3, a detail view of the heat shield 12 is shown, which has a bearing seat 17 for receiving the bearing 13. The bearing seat 17 is configured as an axial projection in the form of a central, cylindrical or sleeve-shaped dome, in whose wall 19a counter-form locking element 18 is hollowed out, which is configured as a shaped slit. In total, six mating form-locking elements 18 are distributed at uniform angular distances over the circumference, which correspond to form-locking elements 16 of web 11, which are embodied as forming fingers.
As can be seen from fig. 4, the finger-shaped form-locking elements 16 of the connecting plate 11 are arranged along a slightly larger radius than the slit-shaped mating form-locking elements 18 of the heat shield 12, so that the form-locking elements 16 engage around the mating form-locking elements 18. In the assembled state, the finger-shaped form-locking elements 16 protrude radially from the outside into the slit-shaped mating form-locking elements 18. The wall 19 of the bearing seat 17 in the heat shield 12 receives the bearing 13 and engages around the bearing 13.
During assembly, the heat shield 12 is pushed axially onto the connection plate 11, the bearing 13 being received in the bearing seat 15 of the connection plate. The slit-shaped mating form-locking elements 18 of the heat shield 12 are pushed onto the finger-shaped form-locking elements 16 of the connecting plate 11, which protrude radially from the outside into the slit-shaped mating form-locking elements 18, as a result of which a form-locking is established in the circumferential direction between the form-locking elements 16 and the mating form-locking elements 18 and thus also between the connecting plate 11 and the heat shield 12.
The bearing 13 is caught by the wall 19 of the bearing housing 17 and is located inside the cylindrical wall 19 in the heat shield 12. In the radial direction, there is no longer any contact between the finger-shaped form-locking elements 16 of the connecting plate 11 and the bearing 13.
Screw holes 20 are formed in the heat shield 12, by means of which screw holes the heat shield 12 can be screwed to the housing 3 or the motor housing 4.
Fig. 5 shows an embodiment variant of the heat shield 12, wherein the inner side of the wall 19 of the bearing seat 17 in the heat shield 12 has a polygonal cross-sectional shape, which in the exemplary embodiment shown is produced as a hexagon. The outer side is configured cylindrically and can be pushed into a corresponding bearing seat 15 configured as a cylindrical recess in the connecting plate 11.
The connection plate 11 according to fig. 6 and the heat shield 12 according to fig. 7 show mutually cooperating bearing blocks 15, 17 having a hexagonal cross-sectional shape. Both the inner side and the outer side of the wall 19 of the bearing support 17 in the heat shield 12 are hexagonal. The inner side of the wall in the bearing seat 15 of the connecting plate 11 likewise has a hexagonal cross-sectional shape, on which the finger-shaped form-locking element 16 is arranged.

Claims (12)

1. An electric drive motor having an end-side connection plate (11) which is provided with bearing blocks (15) for receiving a bearing (13) for a rotor shaft (6), wherein the bearing blocks (15) in the connection plate (11) have form-locking elements (16) distributed over their circumference, which radially engage the bearing (13), and on the end-side of the connection plate (11) a heat shield (12) is arranged, which is likewise provided with bearing blocks (17) for receiving the bearing (13) and has mating form-locking elements (18) distributed over their circumference for engaging the bearing (13), wherein in the assembled state the mating form-locking elements (18) in the heat shield (12) and the form-locking elements (16) in the connection plate (11) are in form-locking in the circumferential direction.
2. Drive motor according to claim 1, characterized in that the form-locking elements (16) in the connection plate (11) have a larger inner diameter than the counterpart form-locking elements (18) in the heat shield (12).
3. Drive motor according to claim 1 or 2, characterized in that the form-locking element (16) or the counter-form-locking element (18) is configured as an axially protruding form-finger and the corresponding elements cooperating in a form-locking manner in the circumferential direction are configured as form-slots into which the form-fingers protrude.
4. A drive motor according to any one of claims 1-3, characterized in that the bearing seats (15, 17) in the heat shield (12) and in the connection plate (11) have the same cross-sectional geometry.
5. Drive motor according to any of claims 1 to 4, characterized in that the bearing seats (15) in the connection plate (11) and/or the bearing seats (17) in the heat shield (12) are cylindrically formed.
6. Drive motor according to any one of claims 1 to 5, characterized in that the bearing seats (17) in the heat shield (12) and/or the bearing seats (15) in the connection plate (11) are configured as polygonal contours, in particular as hexagons.
7. A drive motor according to any one of claims 1 to 6, characterized in that the bearing seats (15) in the connection plate (11) are formed in the form of axial recesses and the bearing seats (17) in the heat shield (12) are formed in the form of axial projections, wherein the projections in the heat shield (12) protrude into the recesses in the connection plate (11) in the assembled state.
8. Drive motor according to any of claims 1 to 7, characterized in that a spring element (14) is arranged in a bearing seat (15) in the connection plate (11), on which spring element the bearing (13) is axially supported.
9. The drive motor according to any one of claims 1 to 8, characterized in that the connection plate (11) is constructed as a plastic component.
10. Drive motor according to any one of claims 1 to 9, characterized in that the heat shield (12) is constructed as a metal component, in particular as an aluminum component.
11. A drive device with an electric drive motor (2) according to any one of claims 1 to 10, which is received in a motor cartridge (4) and which has a housing (3) receiving the motor cartridge (4).
12. Steering system in a vehicle with a drive motor according to any one of claims 1 to 10 or with a drive device (1) according to claim 11 as a servo-assistance device.
CN202310038093.6A 2022-01-20 2023-01-10 Electric drive motor Pending CN116470686A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022200611.9A DE102022200611A1 (en) 2022-01-20 2022-01-20 Electric drive motor
DE102022200611.9 2022-01-20

Publications (1)

Publication Number Publication Date
CN116470686A true CN116470686A (en) 2023-07-21

Family

ID=86990518

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310038093.6A Pending CN116470686A (en) 2022-01-20 2023-01-10 Electric drive motor

Country Status (2)

Country Link
CN (1) CN116470686A (en)
DE (1) DE102022200611A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009001419A1 (en) 2008-06-16 2009-12-17 Robert Bosch Gmbh Transmission drive unit and a method for producing such
DE102010000710A1 (en) 2010-01-07 2011-07-14 Robert Bosch GmbH, 70469 end shield
DE102014205582B4 (en) 2014-03-26 2022-08-25 Robert Bosch Gmbh drive device
CN203948312U (en) 2014-07-21 2014-11-19 常州雷利电机科技有限公司 Brush DC draining pump and the drainage system of air conditioner
DE102016223009A1 (en) 2016-11-22 2018-05-24 Robert Bosch Gmbh Bearing device, and electrical machine including such a storage device and manufacturing method of such a storage device
WO2018211726A1 (en) 2017-05-17 2018-11-22 日本電産株式会社 Motor and electric power steering device
DE102018208556A1 (en) 2018-05-30 2019-12-05 Robert Bosch Gmbh Electric machine with a wire guide ring, and method for producing such an electrical machine

Also Published As

Publication number Publication date
DE102022200611A1 (en) 2023-07-20

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