CN219041552U - New forms of energy motor rotor balancing ring fixed knot constructs - Google Patents

New forms of energy motor rotor balancing ring fixed knot constructs Download PDF

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Publication number
CN219041552U
CN219041552U CN202222649150.8U CN202222649150U CN219041552U CN 219041552 U CN219041552 U CN 219041552U CN 202222649150 U CN202222649150 U CN 202222649150U CN 219041552 U CN219041552 U CN 219041552U
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Prior art keywords
ring
rotor shaft
balance ring
rotor
hole
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CN202222649150.8U
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Chinese (zh)
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陈静雄
陈林
杨芳
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BorgWarner Automotive Components Wuhan Co Ltd
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BorgWarner Automotive Components Wuhan Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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Abstract

The utility model belongs to the technical field of new energy automobile motors, and particularly relates to a new energy motor rotor balance ring fixing structure. According to the structure, a plurality of small holes are added on the balance ring close to the shaft shoulder, and meanwhile, a corresponding number of holes are added on the rotor shaft shoulder, and rotation of the balance ring in the circumferential direction is limited by using a pin or screw connection mode; the balance ring at the other end is provided with a key slot, the rotor shaft is correspondingly provided with the key slot, and the circumferential rotation of the balance ring is limited by key connection; meanwhile, the newly-added steel compression ring limits the axial movement of the balance ring. The structure can ensure that the balance ring can not rotate circumferentially or axially move relative to the rotor shaft in the working process of the motor.

Description

New forms of energy motor rotor balancing ring fixed knot constructs
Technical Field
The utility model belongs to the technical field of new energy automobile motors, and particularly relates to a new energy motor rotor balance ring fixing structure.
Background
The rotor balancing ring of the new energy motor in the prior art adopts aluminum alloy as a raw material, so that the cost is reduced, aluminum is manufactured by casting during mass production, and the cost is much lower than that of a steel balancing ring; however, the rotor shaft is generally made of alloy steel materials, and the difference of the thermal expansion coefficients of steel and aluminum is large, so that the risk of slipping exists at high temperature; to reduce the risk of slipping, the prior art generally chooses to increase the amount of interference, but too much increases the difficulty of assembly and increases the risk of chipping at low temperatures.
Disclosure of Invention
The utility model aims to solve the technical problems that: aiming at the defects of the prior art, the novel energy motor rotor balance ring fixing structure is provided, the balance ring can be stably fixed at two ends of a rotor shaft, and the balance ring is ensured not to rotate circumferentially or axially move relative to the rotor shaft in the working process of the motor.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a new energy motor rotor balance ring fixed knot constructs, includes rotor shaft 10, rotor shaft 10 middle part cover is equipped with rotor core 70, install magnet 80 in the rotor core 70, front balance ring 50 and back balance ring 90 are installed respectively to rotor core 70's front end and rear end, rotor shaft 10 front portion is equipped with rotor shaft stop shoulder 40, rotor shaft 10 rear portion installs clamping ring 100;
the front balance ring 50 is installed between the front end of the rotor core 70 and the rotor shaft shoulder 40, and the front balance ring 50 and the rotor shaft shoulder 40 are circumferentially fixed through pin connection;
the rear balance ring 90 is installed between the rear end of the rotor core 70 and the compression ring 100, the compression ring 100 is in interference fit with the rotor shaft 10, and the rear balance ring 90, the compression ring 100 and the rotor shaft 10 are circumferentially fixed through key connection.
Further, the front balance ring 50 and the rear balance ring 90 are made of aluminum alloy.
Further, the rotor shaft 10 and the compression ring 100 are both made of alloy steel.
Further, a first positioning hole 1 is formed in the end face of the front balancing ring 50, a second positioning hole 4 is formed in the end face of the rear balancing ring 90, a third positioning hole 6 is formed in the end face of the rotor shaft shoulder 40, a fourth positioning hole 12 is formed in the end face of the pressing ring 100, and the first positioning hole 1, the second positioning hole 4, the fourth positioning hole 12 and the third positioning hole 6 are used for positioning and aligning when the front balancing ring 50, the rear balancing ring 90 and the pressing ring 100 are mounted on the rotor shaft 10.
Further, a first pin hole 2 and a second pin hole 3 are formed in the end face of the front balancing ring 50, a third pin hole 7 and a fourth pin hole 8 are formed in the end face of the rotor shaft shoulder 40, after the front balancing ring 50 is installed on the rotor shaft 10, the centers of the first pin hole 2 and the fourth pin hole 8 are aligned, and the centers of the second pin hole 3 and the third pin hole 7 are aligned.
Further, the first pin hole 2, the fourth pin hole 8, the second pin hole 3 and the third pin hole 7 are all provided with pins 30 in an interference mode.
Further, the inner diameter of the rear balancing ring 90 is provided with a key slot 5, the rear part of the rotor shaft 10 is provided with a key slot hole I9, the inner diameter of the compression ring 100 is provided with a key slot hole II 11, and after the rear balancing ring 90 and the compression ring 100 are mounted on the rotor shaft 10, the key slot 5 is aligned with the key slot hole I9 and the key slot hole II 11.
Further, keys 110 are installed in the key groove 5, the key groove hole one 9 and the key groove hole two 11.
Further, a bowl-shaped plug 60 is provided on the rotor shaft 10.
Further, the front end and the rear end of the rotor shaft 10 are respectively sleeved with a front bearing 20 and a rear bearing 120.
Compared with the prior art, the utility model has the following main advantages:
1. a plurality of small holes are added on the front balance ring close to the shaft shoulder, and meanwhile, a corresponding number of holes are added on the rotor shaft shoulder, and the rotation of the front balance ring relative to the rotor shaft in the circumferential direction can be limited by using a pin or screw connection mode;
2. the key slot is added on the rear balance ring, the key slot is correspondingly added on the rotor shaft, and the rotation of the rear balance ring relative to the rotor shaft in the circumferential direction is limited by key connection;
3. the steel compression ring is newly added, so that the axial movement of the balance ring can be limited; meanwhile, the key slot holes on the pressing ring are not designed as through holes, so that the key cannot be separated from the pressing ring due to rotation stress under high-speed operation.
Drawings
FIG. 1 is an overall schematic diagram of a motor rotor gimbal mounting structure according to the present utility model;
FIG. 2 is a schematic diagram of a front gimbal diagram of the present utility model;
FIG. 3 is a schematic view of the back gimbal according to the present utility model.
FIG. 4 is a front view of a rotor shaft according to the present utility model;
FIG. 5 is a side view of a rotor shaft according to the present utility model;
FIG. 6 is a schematic view of a press ring according to the present utility model;
FIG. 7 is a front view of the motor rotor of the present utility model;
fig. 8 is a rear view of the motor rotor of the present utility model.
In the figure: 10. a rotor shaft; 20. a front bearing; 30. a pin; 40. a rotor shaft shoulder; 50. a front balance ring; 60. bowl-shaped plug pieces; 70. a rotor core; 80. a magnet; 90. a rear balance ring; 100. a compression ring; 110. a key; 120. a rear bearing; 1. positioning holes I; 2. pin holes I; 3. a pin hole II; 4. positioning holes II; 5. a key slot; 6. positioning holes III; 7. a pin hole III; 8. a pin hole IV; 9. a key slot I; 11. a key slot II; 12. and a positioning hole IV.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
It should be noted that each step/component described in the present application may be split into more steps/components, or two or more steps/components or part of the operations of the steps/components may be combined into new steps/components, as needed for implementation, to achieve the object of the present utility model.
As shown in fig. 1 to 8, the embodiment of the present application provides a new energy motor rotor balance ring fixing structure, which includes a rotor shaft 10, a front balance ring 50 and a rear balance ring 90.
Specifically, a rotor core 70 is sleeved in the middle of the rotor shaft 10, a magnet 80 is installed in the rotor core 70, a front balance ring 50 and a rear balance ring 90 are respectively installed at the front end and the rear end of the rotor core 70, a rotor shaft shoulder 40 is arranged at the front of the rotor shaft 10, and a compression ring 100 is installed at the rear of the rotor shaft 10;
the front balance ring 50 is installed between the front end of the rotor core 70 and the rotor shaft shoulder 40, and the front balance ring 50 and the rotor shaft shoulder 40 are circumferentially fixed through pin connection;
the rear balance ring 90 is installed between the rear end of the rotor core 70 and the compression ring 100, the compression ring 100 is in interference fit with the rotor shaft 10, and the rear balance ring 90, the compression ring 100 and the rotor shaft 10 are circumferentially fixed through key connection;
the front and rear ends of the rotor shaft 10 are respectively sleeved with a front bearing 20 and a rear bearing 120.
Wherein, the front balance ring 50 and the rear balance ring 90 are made of aluminum alloy; the rotor shaft 10 and the compression ring 100 are both made of alloy steel.
Further, a first positioning hole 1 is formed in the end face of the front balancing ring 50, a second positioning hole 4 is formed in the end face of the rear balancing ring 90, a third positioning hole 6 is formed in the end face of the rotor shaft shoulder 40, and a fourth positioning hole 12 is formed in the end face of the compression ring 100;
the first positioning hole 1, the second positioning hole 4, the fourth positioning hole 12 and the third positioning hole 6 are used for positioning and aligning when the front balancing ring 50, the rear balancing ring 90 and the compression ring 100 are installed on the rotor shaft 10.
Further, a first pin hole 2 and a second pin hole 3 are formed on the end surface of the front balancing ring 50, and a third pin hole 7 and a fourth pin hole 8 are formed on the end surface of the rotor shaft shoulder 40; after the front balance ring 50 is installed on the rotor shaft 10, the centers of the first pin hole 2 and the fourth pin hole 8 are aligned, and the centers of the second pin hole 3 and the third pin hole 7 are aligned;
wherein, pin 30 is all installed to pinhole one 2 and pinhole four 8, pinhole two 3 and pinhole three 7 in, and the pin adopts interference fit with the pinhole, deviate from when preventing high-speed operation.
The mode can solve the problem that the sliding possibly occurs after the interference caused by different expansion coefficients of aluminum and steel is reduced, and the circumferential rotation of the aluminum balance ring is limited by adding the connection of the pins. (in this design, the pin only connects the shaft to the balance ring, and the rotor core 70 is not involved, and the rotor magnetic circuit is not affected)
Furthermore, a key slot 5 is formed on the inner diameter of the rear balancing ring 90, a key slot 9 is formed at the rear part of the rotor shaft 10, and a key slot 11 is formed on the inner diameter of the compression ring 100; after the rear balance ring 90 and the compression ring 100 are installed on the rotor shaft 10, the key slot 5 is aligned with the first key slot hole 9 and the second key slot hole 11; (the key slot hole on the pressing ring is not designed as a through hole, so that the key cannot be separated from the pressing ring due to rotation stress under high-speed operation)
Wherein, keys 110 are arranged in the key groove 5, the key groove hole I9 and the key groove hole II 11. (the addition of the key 110 limits the circumferential rotation of the balance ring, the compression ring 100 adopts alloy steel, the interference of the compression ring and the shaft under the temperature change is lower than the matching change rate of aluminum and steel, and the axial movement of the balance ring is limited)
Further, a bowl-shaped plug 60 is provided on the rotor shaft 10.
Alternatively, the pin connection may be replaced by a screw connection, in which case the pin only passes through the rotor shaft shoulder and the balancing ring, and does not pass through the balancing ring, without affecting the rotor magnetic circuit.
Alternatively, the compression ring may be replaced with a large nut press fit or other securing structure.
In summary, the new energy motor rotor balance ring fixing structure of the application is adopted:
1. the front balance ring close to the shaft shoulder is provided with a plurality of small holes, and the rotor shaft shoulder is provided with a corresponding number of holes, so that slipping possibly occurring after interference caused by different expansion coefficients of aluminum and steel is reduced can be solved by using a pin or screw connection mode, and rotation of the front balance ring relative to the rotor shaft in the circumferential direction can be limited;
2. the key slot is added on the rear balance ring, the key slot is correspondingly added on the rotor shaft, and the rotation of the rear balance ring relative to the rotor shaft in the circumferential direction is limited by key connection;
3. the steel compression ring is newly added, the compression ring and the rotor shaft are made of steel, the interference of the compression ring and the shaft is lower than the matching change rate of aluminum and steel under the temperature change, and the axial movement of the balance ring can be limited; meanwhile, the key slot holes on the pressing ring are not designed as through holes, so that the key cannot be separated from the pressing ring due to rotation stress under high-speed operation.
The above embodiments are merely for illustrating the design concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, the scope of the present utility model is not limited to the above embodiments. Therefore, all equivalent changes or modifications according to the principles and design ideas of the present utility model are within the scope of the present utility model.

Claims (10)

1. The utility model provides a new forms of energy motor rotor balance ring fixed knot constructs, includes rotor shaft (10), rotor shaft (10) middle part cover is equipped with rotor core (70), install magnet (80), its characterized in that in rotor core (70): front balance rings (50) and rear balance rings (90) are respectively arranged at the front end and the rear end of the rotor core (70), a rotor shaft stop shoulder (40) is arranged at the front part of the rotor shaft (10), and a compression ring (100) is arranged at the rear part of the rotor shaft (10);
the front balance ring (50) is arranged between the front end of the rotor core (70) and the rotor shaft shoulder (40), and the front balance ring (50) and the rotor shaft shoulder (40) are circumferentially fixed through pin connection;
the back balance ring (90) is installed between rotor core (70) rear end and clamping ring (100), clamping ring (100) are interference fit with rotor shaft (10), back balance ring (90), clamping ring (100) and rotor shaft (10) are fixed through key connection circumference.
2. The new energy motor rotor balance ring fixing structure according to claim 1, wherein: the front balance ring (50) and the rear balance ring (90) are made of aluminum alloy materials.
3. The new energy motor rotor balance ring fixing structure according to claim 1, wherein: the rotor shaft (10) and the compression ring (100) are made of alloy steel materials.
4. The new energy motor rotor balance ring fixing structure according to claim 1, wherein: the novel rotor shaft is characterized in that a first positioning hole (1) is formed in the end face of the front balancing ring (50), a second positioning hole (4) is formed in the end face of the rear balancing ring (90), a third positioning hole (6) is formed in the end face of the rotor shaft stop shoulder (40), a fourth positioning hole (12) is formed in the end face of the compression ring (100), and the first positioning hole (1), the second positioning hole (4), the fourth positioning hole (12) and the third positioning hole (6) are used for positioning and aligning when the front balancing ring (50), the rear balancing ring (90) and the compression ring (100) are installed on the rotor shaft (10).
5. The new energy motor rotor balance ring fixing structure according to claim 1, wherein: the rotor shaft is characterized in that a first pin hole (2) and a second pin hole (3) are formed in the end face of the front balancing ring (50), a third pin hole (7) and a fourth pin hole (8) are formed in the end face of the rotor shaft shoulder (40), after the front balancing ring (50) is installed on the rotor shaft (10), the centers of the first pin hole (2) and the fourth pin hole (8) are aligned, and the centers of the second pin hole (3) and the third pin hole (7) are aligned.
6. The new energy motor rotor balance ring fixing structure according to claim 5, wherein: the first pin hole (2) and the fourth pin hole (8), the second pin hole (3) and the third pin hole (7) are provided with pins (30) in an interference mode.
7. The new energy motor rotor balance ring fixing structure according to claim 1, wherein: the novel rotor is characterized in that a key groove (5) is formed in the inner diameter of the rear balance ring (90), a key groove hole I (9) is formed in the rear portion of the rotor shaft (10), a key groove hole II (11) is formed in the inner diameter of the compression ring (100), and the key groove (5) is aligned with the key groove hole I (9) and the key groove hole II (11) after the rear balance ring (90) and the compression ring (100) are installed on the rotor shaft (10).
8. The new energy motor rotor balance ring fixing structure according to claim 7, wherein: and keys (110) are arranged in the key groove (5), the key groove hole I (9) and the key groove hole II (11).
9. The new energy motor rotor balance ring fixing structure according to claim 1, wherein: a bowl-shaped plug piece (60) is arranged on the rotor shaft (10).
10. The new energy motor rotor balance ring fixing structure according to claim 1, wherein: the front end and the rear end of the rotor shaft (10) are respectively sleeved with a front bearing (20) and a rear bearing (120).
CN202222649150.8U 2022-10-08 2022-10-08 New forms of energy motor rotor balancing ring fixed knot constructs Active CN219041552U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222649150.8U CN219041552U (en) 2022-10-08 2022-10-08 New forms of energy motor rotor balancing ring fixed knot constructs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222649150.8U CN219041552U (en) 2022-10-08 2022-10-08 New forms of energy motor rotor balancing ring fixed knot constructs

Publications (1)

Publication Number Publication Date
CN219041552U true CN219041552U (en) 2023-05-16

Family

ID=86273597

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222649150.8U Active CN219041552U (en) 2022-10-08 2022-10-08 New forms of energy motor rotor balancing ring fixed knot constructs

Country Status (1)

Country Link
CN (1) CN219041552U (en)

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