CN108880092B - Rotor integral bearing type driving motor for vehicle - Google Patents
Rotor integral bearing type driving motor for vehicle Download PDFInfo
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- CN108880092B CN108880092B CN201810925341.8A CN201810925341A CN108880092B CN 108880092 B CN108880092 B CN 108880092B CN 201810925341 A CN201810925341 A CN 201810925341A CN 108880092 B CN108880092 B CN 108880092B
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- Prior art keywords
- rotor
- hollow
- transmission
- motor
- supporting part
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
Abstract
The invention discloses an integral rotor bearing type driving motor for a vehicle, wherein a rotor of the motor is arranged into a hollow structure and is used for mounting part or all of a transmission, so that the structure of the motor and the transmission is deeply optimized, part or all of accommodation and high integration are formed, the matching is smooth and natural, no running interference occurs, and the high-efficiency work of the motor under all working conditions and comprehensive road conditions is ensured; meanwhile, the structure that the whole rotor load is supported by the transmission box body and the main shaft is adopted, and the additional bending moment generated by the torque is transmitted to the box body, so that larger torque can be transmitted without bending deformation, the size of a component under the condition of the same bearing capacity can be greatly reduced, and the structure is suitable for the hollow structure of the motor rotor; the high-torque, high-rotation-speed and light-weight indexes are realized, and the transmission has better stability and low noise in a high-speed state.
Description
Technical Field
The invention relates to a motor vehicle driving motor, in particular to a rotor integral bearing type driving motor for a vehicle.
Background
The driving motor is a power part of an electric vehicle, comprises a rotor, a stator and the like, is complex in structure and heavy in weight, and has the weight and the volume which are greatly increased along with the increase of power. The driving motor in the prior art generally adopts a rotor shaft to output power, and then drives a speed changer in series, so that the driving system has a complex integral structure, a large volume and a heavy weight.
Therefore, there is a need for an improved structure of the above-mentioned driving motor, which can improve the structure of the motor and the transmission in a deep optimization manner, form partial or complete accommodation and high integration, and have smooth and natural matching without running interference, thereby ensuring the high-efficiency operation of the motor under all conditions and comprehensive road conditions.
Disclosure of Invention
In view of the above, the present invention provides an integral rotor bearing type driving motor for a vehicle, wherein the structure of the motor and the transmission is deeply optimized to form partial or complete accommodation and high integration, the coordination is smooth and natural, no operation interference occurs, and the high efficiency operation of the motor under all working conditions and comprehensive road conditions is ensured.
The invention relates to an integral rotor bearing type driving motor for a vehicle, which comprises a stator and a rotor, wherein the rotor is of a hollow rotor structure, and the hollow structure is used for mounting part or all of a speed change mechanism; the hollow rotor structure is provided with a front supporting part and a rear supporting part; when the hollow rotor structure is used, the front supporting part and the rear supporting part are directly or indirectly rotatably supported on the transmission box body, and the hollow middle part of the hollow rotor structure is directly or indirectly rotatably supported on a transmission main shaft.
Further, the rotor is of a hollow structure which is axially communicated.
Furthermore, the front supporting part is arranged at the front end of the hollow rotor structure in a rigid connection mode, the outer circle of the front supporting part is rotatably supported on the transmission box body through a first rolling bearing, and the inner circle is directly or indirectly supported on the transmission main shaft through the rotating matching of the bearings; the rear supporting part is arranged at the rear end of the hollow rotor in a rigid connection mode, a shaft neck is formed, and the shaft neck is supported on the transmission box body in a rotating matching mode through a second rolling bearing.
Further, the inner wall of the hollow rotor structure is provided with a bearing seat protruding inwards along the radial direction, and the hollow middle part of the hollow rotor structure is directly or indirectly rotatably supported on the main shaft of the transmission through the bearing seat.
Further, the rotor comprises a hollow aluminum alloy rotor supporting body and a rotor main body sleeved outside the aluminum alloy rotor supporting body, the radial section of the outer circle of the aluminum alloy rotor supporting body is of a multi-angular star structure, and the inner circle of the rotor main body is of a multi-angular star structure matched with the outer circle of the aluminum alloy rotor supporting body.
Furthermore, magnetic steel of the motor is arranged in the rotor main body, and the arrangement mode of the magnetic steel is matched with the polygonal star structure.
Furthermore, the inner walls of the cavities of the rotors are juxtaposed in the circumferential direction to form stiffening ribs in the longitudinal direction.
Furthermore, the plate-shaped bulges forming the bearing seat are superposed with the corresponding stiffening ribs, and the circumferential distance between every two adjacent plate-shaped bulges is the circumferential distance between every two stiffening ribs.
The invention has the beneficial effects that: according to the rotor integrally-bearing type driving motor for the vehicle, the rotor of the motor is arranged into a hollow structure and is used for mounting part or all of the speed changer, so that the structure of the motor and the speed changer is deeply optimized, part or all of accommodation and high integration are formed, the matching is smooth and natural, no running interference occurs, and the high-efficiency work of the motor under all working conditions and comprehensive road conditions is ensured; meanwhile, the structure that the whole rotor load is supported by the transmission box body and the main shaft is adopted, and the additional bending moment generated by the torque is transmitted to the box body, so that larger torque can be transmitted without bending deformation, the size of a component under the condition of the same bearing capacity can be greatly reduced, and the structure is suitable for the hollow structure of the motor rotor; the large torque, high rotating speed and light weight indexes are realized, and the transmission has better stability and low noise in a high-speed state; the structure ensures the compactness of the whole structure of the transmission, is beneficial to realizing the whole lightweight arrangement of the transmission, and creates conditions for the use of a high-speed motor.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic axial sectional view of the present invention;
fig. 2 is a radial cross-sectional view of the present invention.
Detailed Description
Fig. 1 is a schematic view of the axial cross-section structure of the present invention, and fig. 2 is a radial cross-section view of the present invention, as shown in the drawings: the invention relates to an integral rotor bearing type driving motor for a vehicle, which comprises a stator 1 and a rotor, wherein the rotor is of a hollow rotor structure, and the hollow rotor structure is used for mounting part or all of a speed change mechanism; as shown in the figure, the components of the mechanically adaptive transmission are positioned in a hollow structure, so that a compact containing structure is formed, and the integration is high.
The hollow rotor structure is provided with a front supporting part and a rear supporting part; when the hollow rotor structure is used, the front supporting part and the rear supporting part are directly or indirectly rotatably supported on the transmission box body, and the hollow middle part of the hollow rotor structure is directly or indirectly rotatably supported on a transmission main shaft; as shown in the figure, the front supporting part is arranged at the front end of the hollow rotor structure in a rigid connection mode, the outer circle of the front supporting part is rotatably supported on the transmission box body through a first rolling bearing, and the inner circle of the front supporting part is directly or indirectly supported on the transmission main shaft through the rotating matching of the bearing; the rear supporting part is arranged at the rear end of the hollow rotor in a rigid connection mode, a shaft neck is formed, and the shaft neck is supported on the transmission box body in a rotating fit mode through a second rolling bearing; in this embodiment, as shown in the figure, the front supporting part includes an overrunning clutch outer ring 7 and a transmission sleeve which are fixedly connected, an outer circle of the transmission sleeve is rotatably supported on the transmission box body through a first rolling bearing 8, an inner circle of the transmission sleeve is rotatably supported on a shaft sleeve through a bearing 10 in a matching manner, and the shaft sleeve is externally sleeved on the main shaft to form an indirect rotary supporting structure; the rear supporting part 6 forms a shaft neck, the shaft neck is supported in the transmission box body in a rotating fit mode through the second rolling bearing 11, as shown in the figure, rigid transmission connection supports are arranged at two ends of the rotor, the rotor forms a rigid transmission body and is supported in the transmission box body, borne torque is transferred to the transmission box body to be borne together, good integrity and cooperativity are achieved, under the condition of the same structural size, the structure has larger bearing capacity and higher rotating speed running capacity, and conditions are provided for achieving light weight and high speed of the motor.
In this embodiment, the rotor is a hollow structure that penetrates in the axial direction.
In this embodiment, the hollow inner wall of the rotor is provided with a radially inwardly projecting bearing seat 3a for rotatably engaging with a transmission component inside the hollow rotor to form a support, and in use, the bearing seat is rotatably supported on a transmission main shaft 5 via a bearing 4, as shown in the drawings.
In this embodiment, the bearing seat 3a is formed by inward protruding plate-shaped protrusions arranged in parallel along the circumferential direction on the hollow inner wall of the rotor, and the plate-shaped protrusions support the bearing and have the effect of cooling fins, so that heat generated by the motor rotor can be effectively dissipated into the cavity, and the overall strength of the hollow rotor can be increased.
In this embodiment, the rotor includes a hollow aluminum alloy rotor support body 3 and a rotor main body 2 externally sleeved on the aluminum alloy rotor support body, the outer circle radial section of the aluminum alloy rotor support body is of a multi-angular star structure, and the inner circle of the rotor main body is of a multi-angular star structure matched with the outer circle of the aluminum alloy rotor support body; the aluminum alloy supporting body is adopted and the polygonal star structure is adopted for matching, so that the volume occupied by the aluminum alloy in the rotor is increased, the overall weight of the motor is reduced, the lightweight structural arrangement of the motor is realized, and the structural cost is reduced; the polygonal star structure also ensures the matching strength in the circumferential direction between the supporting body and the main body, can greatly improve the rotating speed (same component size) under large torque, and realizes large torque, high rotating speed and lightweight index.
In this embodiment, a magnetic steel 9 of the motor is arranged in the rotor main body 2, and the arrangement mode of the magnetic steel 9 is adapted to the polygon structure; the matching structure can also be understood as a matching mode (multi-angle star) of the rotor support and the rotor main body adapts to the arrangement mode of the magnetic steel, the matching structure adapts to the magnetic line environment of the magnetic steel as far as possible, structural conditions are created for saving electric energy, and energy conservation and consumption reduction are facilitated.
In the embodiment, the inner walls of the cavities of the rotors are parallel to form the stiffening ribs 3b along the longitudinal direction along the circumferential direction, and the stiffening ribs can effectively increase the strength of the body of the rotor and are further suitable for the light weight structure of the hollow rotor; in this embodiment, the stiffening ribs 3b are disposed on the aluminum alloy rotor support body 3, so as to meet the requirements of the aluminum alloy material for the structure, ensure the strength of the support itself, and ensure that the lightweight structure has sufficient support and transmission strength.
In this embodiment, the plate-shaped protrusions forming the bearing seat are overlapped with the corresponding stiffening ribs, and the circumferential distance between every two adjacent plate-shaped protrusions is the circumferential distance between every two stiffening ribs; the processing technology is simple and convenient, and the heat-radiating plate has enough large supporting strength and heat-radiating space, and provides larger heat-radiating medium flowing space.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered in the claims of the present invention.
Claims (8)
1. The utility model provides a rotor is whole bears formula driving motor for vehicle which characterized in that: the speed changing device comprises a stator and a rotor, wherein the rotor is of a hollow rotor structure, and the hollow rotor structure is used for mounting part or all of the speed changing mechanism; the hollow rotor structure is provided with a front supporting part and a rear supporting part; when the hollow rotor structure is used, the front supporting part and the rear supporting part are directly or indirectly rotatably supported on the transmission box body, and the hollow middle part of the hollow rotor structure is directly or indirectly rotatably supported on a transmission main shaft;
the front supporting part is arranged at the front end of the hollow rotor structure in a rigid connection mode, the outer circle of the front supporting part is rotatably supported on the transmission box body through a first rolling bearing, and the inner circle of the front supporting part is directly or indirectly supported on a transmission main shaft through the rotating matching of a bearing; the rear supporting part is arranged at the rear end of the hollow rotor in a rigid connection mode, a shaft neck is formed, and the shaft neck is supported on the transmission box body in a rotating matching mode through a second rolling bearing.
2. The integrally rotor-carrying drive motor for a vehicle according to claim 1, characterized in that: the rotor is of a hollow structure which is axially communicated.
3. The integrally rotor-carrying drive motor for a vehicle according to claim 1, characterized in that: the inner wall of the hollow rotor structure is provided with a bearing seat which protrudes inwards along the radial direction, and the hollow middle part of the hollow rotor structure is directly or indirectly rotatably supported on a main shaft of the transmission through the bearing seat.
4. The integrally rotor-carrying drive motor for a vehicle according to claim 3, characterized in that: the bearing seat is formed by inward-protruding plate-shaped protrusions which are arranged in parallel along the circumferential direction on the hollow inner wall of the rotor.
5. The integrally rotor-carrying drive motor for a vehicle according to claim 4, characterized in that: the rotor comprises a hollow aluminum alloy rotor supporting body and a rotor main body sleeved outside the aluminum alloy rotor supporting body, the radial section of the outer circle of the aluminum alloy rotor supporting body is of a multi-angular star structure, and the inner circle of the rotor main body is of a multi-angular star structure matched with the outer circle of the aluminum alloy rotor supporting body.
6. The integrally rotor-carrying drive motor for a vehicle according to claim 5, characterized in that: and magnetic steel of the motor is arranged in the rotor main body, and the arrangement mode of the magnetic steel is adapted to the polygonal star structure.
7. The integrally rotor-carrying drive motor for a vehicle according to claim 6, characterized in that: the inner walls of the cavities of the rotors are juxtaposed in the circumferential direction to form stiffening ribs in the longitudinal direction.
8. The integrally rotor-carrying drive motor for a vehicle according to claim 7, characterized in that: the plate-shaped bulges forming the bearing seat are overlapped with the corresponding stiffening ribs, and the circumferential distance between every two adjacent plate-shaped bulges is the circumferential distance between every two stiffening ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810925341.8A CN108880092B (en) | 2018-08-14 | 2018-08-14 | Rotor integral bearing type driving motor for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810925341.8A CN108880092B (en) | 2018-08-14 | 2018-08-14 | Rotor integral bearing type driving motor for vehicle |
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| Publication Number | Publication Date |
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| CN108880092A CN108880092A (en) | 2018-11-23 |
| CN108880092B true CN108880092B (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810925341.8A Active CN108880092B (en) | 2018-08-14 | 2018-08-14 | Rotor integral bearing type driving motor for vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110401275A (en) * | 2019-08-21 | 2019-11-01 | 上海锢维智能设备有限公司 | Lightweight rotor axis of electric and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104276024A (en) * | 2013-07-12 | 2015-01-14 | 江瑞华 | Hybrid power system |
| CN204263928U (en) * | 2014-09-25 | 2015-04-15 | 天津市松正电动汽车技术股份有限公司 | Motor and transmission integrated structure |
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