CN112467903B - Motor rotors and permanent magnet motors - Google Patents
Motor rotors and permanent magnet motors Download PDFInfo
- Publication number
- CN112467903B CN112467903B CN202011319953.6A CN202011319953A CN112467903B CN 112467903 B CN112467903 B CN 112467903B CN 202011319953 A CN202011319953 A CN 202011319953A CN 112467903 B CN112467903 B CN 112467903B
- Authority
- CN
- China
- Prior art keywords
- shaft
- permanent magnet
- motor rotor
- plate
- carbon fiber
- 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
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 45
- 239000004917 carbon fiber Substances 0.000 claims abstract description 45
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 45
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 21
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
本申请提供一种电机转子和永磁电机。该电机转子包括转轴、固定板(1)和碳纤维护套(2)，转轴包括沿轴向依次设置的第一轴(3)、永磁体(4)和第二轴(5)，固定板(1)沿转轴的轴向延伸，固定板(1)的第一端固定连接在第一轴(3)上，固定板(1)的第二端固定连接在第二轴(5)上，固定板(1)为至少两个，至少两个固定板(1)在转轴的外周侧沿周向依次设置，并拼接成圆筒，碳纤维护套(2)缠绕在圆筒的外周侧。根据本申请的电机转子，能够有效避免碳纤维护套发生断裂现象，保证永磁体在电机转子高速旋转时的结构安全。
The present application provides a motor rotor and a permanent magnet motor. The motor rotor comprises a rotating shaft, a fixing plate (1) and a carbon fiber sheath (2), wherein the rotating shaft comprises a first shaft (3), a permanent magnet (4) and a second shaft (5) arranged in sequence along the axial direction, the fixing plate (1) extends in the axial direction of the rotating shaft, the first end of the fixing plate (1) is fixedly connected to the first shaft (3), the second end of the fixing plate (1) is fixedly connected to the second shaft (5), there are at least two fixing plates (1), at least two fixing plates (1) are arranged in sequence along the circumferential direction on the outer peripheral side of the rotating shaft and spliced into a cylinder, and the carbon fiber sheath (2) is wound on the outer peripheral side of the cylinder. According to the motor rotor of the present application, the carbon fiber sheath can be effectively prevented from breaking, and the structural safety of the permanent magnet when the motor rotor rotates at high speed can be ensured.
Description
Technical Field
The application relates to the technical field of motors, in particular to a motor rotor and a permanent magnet motor.
Background
Along with the promotion of the industrial upgrading of the nation, the motor field can continuously develop to high speed and miniaturization. The surface-mounted rotor is simple in structure and convenient to assemble, so that the surface-mounted rotor is commonly used in the field of high-speed motors, and because the tensile strength of the permanent magnet is low, a sheath is usually added on the outer surface of the permanent magnet, and the sheath material is commonly high-strength alloy or carbon fiber and the like.
As the power and the rotating speed of the motor are gradually increased, the outer diameter of the permanent magnet of the rotor of the surface-mounted motor is increased, and the centrifugal force borne by the rotor is also increased; the high-strength alloy sheath has limited yield strength and cannot ensure the safety of a rotor structure at a higher rotating speed, the carbon fiber sheath has very low radial and axial strength and cannot meet the requirement of the rigidity of the rotor, the rotor is easy to bend in the running process, the contact position of the multi-section permanent magnet and the contact position of the permanent magnet and a shaft can generate the axial fracture phenomenon of the carbon fiber sheath, in addition, the winding initial tension provided by the existing carbon fiber winding technology is limited, the carbon fiber sheath has limited compressive stress provided by a wrapping object, and if the compressive stress of the carbon fiber sheath does not directly act on the permanent magnet, the permanent magnet is difficult to protect at the high rotating speed, so the structural safety of the permanent magnet is difficult to ensure in the high-speed rotation by adopting the double-sheath form of carbon fiber and high-strength alloy.
Disclosure of Invention
Therefore, the technical problem to be solved by the application is to provide the motor rotor and the permanent magnet motor, which can effectively avoid the fracture phenomenon of the carbon fiber sheath and ensure the structural safety of the permanent magnet when the motor rotor rotates at a high speed.
In order to solve the problems, the application provides a motor rotor, which comprises a rotating shaft, fixing plates and a carbon fiber sheath, wherein the rotating shaft comprises a first shaft, a permanent magnet and a second shaft which are sequentially arranged along the axial direction, the fixing plates extend along the axial direction of the rotating shaft, first ends of the fixing plates are fixedly connected to the first shaft, second ends of the fixing plates are fixedly connected to the second shaft, at least two fixing plates are sequentially arranged along the circumferential direction on the outer circumferential side of the rotating shaft and are spliced into a cylinder, and the carbon fiber sheath is wound on the outer circumferential side of the cylinder.
Preferably, the first shaft and the second shaft each comprise a shaft extension end and a main shaft end, the shaft extension ends and the main shaft ends form a step structure, the permanent magnet is located between the main shaft ends of the first shaft and the second shaft, the first end of the fixing plate is fixedly connected to the main shaft end of the first shaft, and the second end of the fixing plate is fixedly connected to the main shaft end of the second shaft.
Preferably, the fixed plate comprises a plate body and end plates arranged at two ends of the plate body, the plate body is sleeved outside the rotating shaft, a first pin hole is formed in the end plate of the fixed plate, a second pin hole is formed in the end face of the main shaft end, and the fixed plate is fixedly connected with the first shaft and the second shaft through pins arranged in the first pin hole and the second pin hole respectively.
Preferably, the end face of the pin is lower than the end face of the spindle end near the shaft extension end, or the end face of the pin is flush with the end face of the spindle end.
Preferably, the end plate has an inner circular surface matched with the shaft extension end, the diameter of the inner circular surface of the end plate is larger than that of the shaft extension end, and/or the plate body has an inner cambered surface matched with the outer circumferential surface of the rotating shaft, and the inner cambered surface is matched with the outer circumferential surface of the rotating shaft.
Preferably, the shaft extension end is sleeved with a rotor baffle, and the rotor baffle is stopped outside the main shaft end.
Preferably, the rotor barrier is an interference fit with the shaft extension.
Preferably, the rotor baffle is further provided with a screw cap, the screw cap is in threaded connection with the shaft extension end, and the screw cap forms axial limit on the rotor baffle.
Preferably, the carbon fiber sheath is in an interference fit with the cylinder.
Preferably, the outer circumferential surface of the cylinder is a smooth surface.
Preferably, the first shaft and the second shaft are made of a magnetically non-conductive material.
According to another aspect of the present application, there is provided a permanent magnet motor comprising a motor rotor as described above.
The application provides a motor rotor which comprises a rotating shaft, fixing plates and a carbon fiber sheath, wherein the rotating shaft comprises a first shaft, a permanent magnet and a second shaft which are sequentially arranged along the axial direction, the fixing plates extend along the axial direction of the rotating shaft, the first ends of the fixing plates are fixedly connected to the first shaft, the second ends of the fixing plates are fixedly connected to the second shaft, at least two fixing plates are sequentially arranged along the circumferential direction on the outer circumferential side of the rotating shaft and are spliced into a cylinder, and the carbon fiber sheath is wound on the outer circumferential side of the cylinder. The motor rotor is sleeved with the block type fixing plate outside the rotating shaft formed by the first shaft, the permanent magnet and the second shaft, two ends of the fixing plate are fixedly connected with the first shaft and the second shaft, the fixing plate can be used for fixing the permanent magnet and the radial and axial strength required by the matching of the permanent magnet and the shaft, the carbon fiber sheath is prevented from receiving larger radial and axial effects in the motor rotor moving process, the carbon fiber sheath can be used for providing larger circumferential strength for the permanent magnet, the whole shaft bending resistance of the motor rotor can be effectively improved through the matching of the fixing plate and the carbon fiber sheath, the carbon fiber sheath can directly act on the first shaft, the second shaft and the permanent magnet through the split type fixing plate, the permanent magnet is protected from being structurally safe when the motor rotor rotates at a high speed, the carbon fiber sheath is prevented from generating axial fracture phenomenon in the operation process, the limit rotating speed of the motor is further improved, and the power density of the motor is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a motor rotor according to an embodiment of the present application;
Fig. 2 is an exploded view of a motor rotor according to an embodiment of the present application;
Fig. 3 is a perspective view of a first shaft of a motor rotor according to an embodiment of the present application;
fig. 4 is a perspective view of a fixing plate of a motor rotor according to an embodiment of the present application;
Fig. 5 is a force analysis diagram of a motor rotor according to an embodiment of the present application.
The reference numerals are expressed as:
1. a fixing plate; 2, a carbon fiber sheath, 3, a first shaft, 4, a permanent magnet, 5, a second shaft, 6, a shaft extension end, 7, a main shaft end, 8, a plate body, 9, an end plate, 10, a first pin hole, 11, a second pin hole, 12, a pin, 13, a rotor baffle, 14 and a nut.
Detailed Description
Referring to fig. 1 to 5 in combination, according to an embodiment of the present application, a motor rotor includes a rotating shaft including a first shaft 3, a permanent magnet 4, and a second shaft 5 sequentially disposed in an axial direction, a fixing plate 1 extending in the axial direction of the rotating shaft, a first end of the fixing plate 1 being fixedly connected to the first shaft 3, a second end of the fixing plate 1 being fixedly connected to the second shaft 5, at least two fixing plates 1 being sequentially disposed in a circumferential direction at an outer circumferential side of the rotating shaft and spliced into a cylinder, and the carbon fiber sheath 2 being wound around the outer circumferential side of the cylinder.
The motor rotor is sleeved with the block type fixing plate 1 outside a rotating shaft formed by the first shaft 3, the permanent magnet 4 and the second shaft 5, two ends of the fixing plate 1 are fixedly connected with the first shaft 3 and the second shaft 5, the fixing plate 1 can be utilized to ensure radial and axial strength required by the permanent magnet 4 and the cooperation of the permanent magnet 4 and the shaft, the carbon fiber sheath 2 is prevented from receiving larger radial and axial effects in the motor rotor moving process, the carbon fiber sheath 2 can be utilized to provide larger circumferential strength for the permanent magnet 4, the whole shaft bending resistance of the motor rotor can be effectively improved through the cooperation of the fixing plate 1 and the carbon fiber sheath 2, the compressive stress can be directly acted on the first shaft 3, the second shaft 5 and the permanent magnet 4 through the split type fixing plate 1, the structural safety of the permanent magnet 4 during high-speed rotation of the motor rotor is protected, the carbon fiber sheath 2 is prevented from generating axial fracture phenomenon in the operation process, the limit rotating speed of the motor is further improved, and the power density of the motor is improved.
The first shaft 3 and the second shaft 5 respectively comprise a shaft extending end 6 and a main shaft end 7, the shaft extending end 6 and the main shaft end 7 form a step structure, the permanent magnet 4 is positioned between the main shaft end 7 of the first shaft 3 and the main shaft end 7 of the second shaft 5, the first end of the fixing plate 1 is fixedly connected to the main shaft end 7 of the first shaft 3, and the second end of the fixing plate 1 is fixedly connected to the main shaft end 7 of the second shaft 5.
The first end and the first axle 3 fixed connection of fixed plate 1, second end and second axle 5 fixed connection, consequently can realize the fixed connection between first axle 3 and the second axle 5 through fixed plate 1, simultaneously, because permanent magnet 4 is located between first axle 3 and the second axle 5, consequently also can form axial and radial spacing to permanent magnet 4 through fixed plate 1, utilize fixed plate 1 to eliminate permanent magnet 4 in the motor rotor course of working to the axial and radial influence of carbon fiber sheath 2, avoid carbon fiber sheath 2 in the motor rotor course of working, take place the phenomenon of axial fracture in the contact position of permanent magnet 4 and first axle 3 or second axle 5.
The fixed plate 1 comprises a plate body 8 and end plates 9 arranged at two ends of the plate body 8, the plate body 8 is sleeved outside the rotating shaft, a first pin hole 10 is formed in the end plate 9 of the fixed plate 1, a second pin hole 11 is formed in the end face of the main shaft end 7, and the fixed plate 1 is fixedly connected with the first shaft 3 and the fixed plate 1 and the second shaft 5 through pins 12 arranged in the first pin hole 10 and the second pin hole 11 respectively.
The fixing plate 1 is made of non-magnetic conductive material, and can be specifically stainless steel or non-magnetic conductive alloy. The fixed plate 1 is fixedly connected with the first shaft 3 and the second shaft 5 through the end plates 9 at two ends, so that axial limiting of the fixed plate 1 on the first shaft 3, the permanent magnets 4 and the second shaft 5 can be realized through the end plates 9 at two ends, and meanwhile, the fixed connection of the fixed plate 1 with the first shaft 3, the permanent magnets 4 and the second shaft 5 in the radial direction and the circumferential direction can be realized through the pins 12.
The two sides of the fixed plate 1 are respectively provided with a first pin hole 10, the main shaft ends 7 of the first shaft 3 and the second shaft 5 are respectively provided with a second pin hole 11, each main shaft end 7 is provided with N (N is more than or equal to 2) second pin holes 11, the number of the fixed plates 1 is also N, one end of each fixed plate 1 is provided with 1 first pin hole 10, and therefore the fixed connection between each fixed plate 1 and the main shaft end 7 can be realized. The N fixing plates 1 can be spliced into a complete cylinder to realize the installation cooperation with the rotating shaft.
The end plate 9 has an inner circular surface which is matched with the shaft extension end 6, and the diameter of the inner circular surface of the end plate 9 is larger than that of the shaft extension end 6, so that the inner circular surface of the end plate 9 can be fully matched with the outer circumferential surface of the shaft extension end 6.
The plate body 8 is provided with an inner cambered surface matched with the outer circumferential surface of the rotating shaft, the inner cambered surface is attached to the outer circumferential surface of the rotating shaft, the fixing plate 1 can be fully contacted with the first shaft 3, the permanent magnet 4 and the second shaft 5, and the structural integrity and consistency of the motor rotor are guaranteed.
The back chipping treatment is carried out at the inboard apex angle department of fixed plate 1, avoid fixed plate 1 to take place to interfere between inboard apex angle department and first axle 3 or second axle 5, guarantee to fully cooperate in place between fixed plate 1 and first axle 3 and the second axle 5 for the medial surface of two end plates 9 of fixed plate 1 can be hugged closely on the terminal surface of main shaft end 7 of first axle 3 and second axle 5, make can press fit between first axle 3 and second axle 5 and the permanent magnet 4, fixed plate 1 can play effectual connection fixed action.
In one embodiment, the end face of the pin 12 is lower than the end face of the spindle end 7 near the shaft extension end 6, or the end face of the pin 12 is flush with the end face of the spindle end 7, so that the pin 12 can effectively connect the rotating shaft with the fixed plate 1, and interference caused by use of the pin 12 to the whole assembly of the motor rotor is avoided.
The first shaft 3 and the second shaft 5 are supported by non-magnetic materials such as stainless steel or non-magnetic alloy, so that the axial magnetic leakage of the permanent magnet 4 can be effectively reduced.
The rotor baffle 13 is sleeved on the shaft extension end 6, the rotor baffle 13 is stopped outside the main shaft end 7, the pin 12 can be axially limited, the pin 12 is prevented from falling out of the first pin hole 10 of the fixed plate 1, and the stability and reliability of the whole structure of the motor rotor are improved.
In one embodiment, the interference fit between the rotor baffle 13 and the shaft extension end 6 can effectively ensure the stability of the fit structure between the rotor baffle 13 and the shaft extension end 6.
The rotor baffle 13 is also provided with a screw cap 14, the screw cap 14 is in threaded connection with the shaft extension end 6, and the screw cap 14 forms axial limit on the rotor baffle 13, so that the rotor baffle 13 is kept at a locking position, and the rotor baffle 13 is prevented from axial displacement. External threads can be arranged on the shaft extension end 6, and the external threads of the shaft extension end 6 are matched with the screw cap 14, so that the screw cap 14 is locked and fixed on the first shaft 3 or the second shaft 5.
The interference fit between the carbon fiber sheath 2 and the cylinder can ensure that the compressive stress of the carbon fiber sheath 2 can be fully transferred to the fixing plate 1.
The outer peripheral surface of the cylinder is a smooth surface, so that the problem that the carbon fiber sheath 2 is axially broken due to friction action on the carbon fiber sheath 2 in the working process of the motor rotor can be avoided.
The first shaft 3 and the second shaft 5 are made of a non-magnetically conductive material.
The assembling process of the motor rotor comprises the steps of splicing the first shaft 3, the permanent magnet 4 and the second shaft 5, installing the fixing plate 1, locking the fixing plate 1, the first shaft 3 and the second shaft 5 into an integrated structure through the pins 12, respectively assembling the rotor baffle 13 on the first shaft 3 and the second shaft 5 according to the heating temperature of the rotor baffle 13 by the interference amount, enabling the rotor baffle 13 to be in interference fit with the first shaft 3 and the second shaft 5, then assembling the nuts 14, tightly locking the inner end faces of the two sides of the fixing plate 1 to the end faces of the main shaft ends 7 of the first shaft 3 and the second shaft 5 through the nuts 14, and therefore the whole motor rotor has bending resistance, and the radial acting force (namely compressive stress) between the fixing plate 1 and the first shaft 3, the permanent magnet 4 and the second shaft 5 is small. Finally, the carbon fiber is wound around the outer surface of the fixing plate 1, and the carbon fiber tension is ensured to be consistent in the whole winding process. After winding, baking the whole motor rotor at a certain temperature to shape the carbon fiber sheath 2, and naturally cooling to complete the manufacture of the whole motor rotor.
With reference to fig. 5, due to the adoption of the segmented fixing plate structure, the compressive stress of the carbon fiber sheath 2 on the fixing plate 1 can directly act on the first shaft 3, the permanent magnet 4 and the second shaft 5 through the force transmission effect, and according to the force interaction principle, the centrifugal force born by the permanent magnet 4 also directly acts on the carbon fiber sheath 2 when the rotor rotates at high speed, so that the actual centrifugal force born by the permanent magnet 4 is F2-F1 when the motor rotor rotates, wherein F1 is the centrifugal force born by the motor rotor when the motor rotor rotates, and F2 is the pressure of the carbon fiber sheath 2 on the permanent magnet when the motor rotor rotates at static state.
The circumferential strength of the carbon fiber sheath 2 is more than or equal to 1800MPa (which is far higher than the current high-strength alloy sheath), so that the structure safety of the fixing plate 1 and the permanent magnet 4 can be effectively protected, and the axial fracture problem of the carbon fiber sheath 2 can be effectively solved because the carbon fiber is wound on the smooth outer surface of the fixing plate 1 and cannot be subjected to additional friction or cutting action.
According to an embodiment of the application, the permanent magnet motor comprises a motor rotor, which is the motor rotor described above.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.
Claims (8)
1. The motor rotor is characterized by comprising a rotating shaft, fixing plates (1) and a carbon fiber sheath (2), wherein the rotating shaft comprises a first shaft (3), a permanent magnet (4) and a second shaft (5) which are sequentially arranged along the axial direction, the fixing plates (1) extend along the axial direction of the rotating shaft, the first ends of the fixing plates (1) are fixedly connected to the first shaft (3), the second ends of the fixing plates (1) are fixedly connected to the second shaft (5), the number of the fixing plates (1) is at least two, the fixing plates (1) are sequentially arranged along the circumferential direction at the outer circumferential side of the rotating shaft, the fixing plates are spliced into a cylinder, and the carbon fiber sheath (2) is wound at the outer circumferential side of the cylinder;
The first shaft (3) and the second shaft (5) both comprise a shaft extending end (6) and a main shaft end (7), the shaft extending end (6) and the main shaft end (7) form a step structure, the permanent magnet (4) is positioned between the main shaft end (7) of the first shaft (3) and the main shaft end (7) of the second shaft (5), the first end of the fixed plate (1) is fixedly connected to the main shaft end (7) of the first shaft (3), and the second end of the fixed plate (1) is fixedly connected to the main shaft end (7) of the second shaft (5);
The fixing plate (1) comprises a plate body (8) and end plates (9) arranged at two ends of the plate body (8), the plate body (8) is sleeved outside the rotating shaft, a first pin hole (10) is formed in the end plate (9) of the fixing plate (1), a second pin hole (11) is formed in the end face, far away from the permanent magnet (4), of the main shaft end (7), and the fixing plate (1) and the first shaft (3) are fixedly connected through pins (12) arranged in the first pin hole (10) and the second pin hole (11) respectively;
The end face of the pin (12) is lower than the end face of the main shaft end (7) close to the shaft extending end (6), a rotor baffle (13) is sleeved on the shaft extending end (6), and the rotor baffle (13) stops the end plate (9).
2. The motor rotor according to claim 1, characterized in that the end plate (9) has an inner circular surface cooperating with the shaft extension end (6), the inner circular surface of the end plate (9) having a larger diameter than the shaft extension end (6), and/or the plate body (8) has an inner circular surface cooperating with the outer circumferential surface of the rotating shaft, the inner circular surface being conformed to the outer circumferential surface of the rotating shaft.
3. An electric motor rotor according to claim 1, characterized in that the rotor barrier (13) is an interference fit with the shaft extension (6).
4. The motor rotor according to claim 1, characterized in that a screw cap (14) is further arranged outside the rotor baffle (13), the screw cap (14) is screwed with the shaft extension end (6), and the screw cap (14) forms an axial limit for the rotor baffle (13).
5. The electric motor rotor as recited in any one of claims 1-4, characterized in that the carbon fiber sheath (2) is an interference fit with the cylinder.
6. The motor rotor according to any one of claims 1 to 4, characterized in that an outer peripheral surface of the cylinder is a smooth surface.
7. An electric motor rotor according to any one of claims 1-4, characterized in that the first shaft (3) and the second shaft (5) are made of a non-magnetically conductive material.
8. A permanent magnet electric machine comprising a machine rotor, characterized in that the machine rotor is the machine rotor according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011319953.6A CN112467903B (en) | 2020-11-23 | 2020-11-23 | Motor rotors and permanent magnet motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011319953.6A CN112467903B (en) | 2020-11-23 | 2020-11-23 | Motor rotors and permanent magnet motors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112467903A CN112467903A (en) | 2021-03-09 |
| CN112467903B true CN112467903B (en) | 2024-12-13 |
Family
ID=74799193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011319953.6A Active CN112467903B (en) | 2020-11-23 | 2020-11-23 | Motor rotors and permanent magnet motors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112467903B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113489186A (en) * | 2021-07-08 | 2021-10-08 | 珠海格力电器股份有限公司 | Motor rotor and motor |
| CN113541358B (en) * | 2021-07-26 | 2022-05-27 | 珠海格力电器股份有限公司 | Motor rotor structure and permanent magnet motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990001279U (en) * | 1997-06-18 | 1999-01-15 | 윤종용 | Permanent magnet fixing device for compressor rotor |
| KR20080005805A (en) * | 2006-07-10 | 2008-01-15 | 삼성광주전자 주식회사 | Rotor for compressor |
| CN109245361A (en) * | 2018-10-08 | 2019-01-18 | 珠海格力电器股份有限公司 | motor rotor, motor and air conditioner |
| CN213637249U (en) * | 2020-11-23 | 2021-07-06 | 珠海格力电器股份有限公司 | Motor rotor and permanent magnet motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005295722A (en) * | 2004-04-01 | 2005-10-20 | Seiko Precision Inc | Rotor and motor with this rotor |
| JP4957891B2 (en) * | 2006-11-20 | 2012-06-20 | 株式会社島津製作所 | Synchronous motor |
| EP2854258B1 (en) * | 2013-09-26 | 2021-01-20 | SKF Magnetic Mechatronics S.A.S. | Permanent magnet rotor shaft assembly and method |
| DE112016004207B4 (en) * | 2015-09-16 | 2024-12-24 | Mitsubishi Electric Corporation | ROTOR FOR ELECTRIC ROTARY MACHINE AND ELECTRIC ROTARY MACHINE |
| CN204992842U (en) * | 2015-10-15 | 2016-01-20 | 江苏利得尔电机有限公司 | Permanent -magnet machine rotor sheath |
| CN211606212U (en) * | 2020-03-18 | 2020-09-29 | 合普动力股份有限公司 | Fast assembly's electric motor rotor |
-
2020
- 2020-11-23 CN CN202011319953.6A patent/CN112467903B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990001279U (en) * | 1997-06-18 | 1999-01-15 | 윤종용 | Permanent magnet fixing device for compressor rotor |
| KR20080005805A (en) * | 2006-07-10 | 2008-01-15 | 삼성광주전자 주식회사 | Rotor for compressor |
| CN109245361A (en) * | 2018-10-08 | 2019-01-18 | 珠海格力电器股份有限公司 | motor rotor, motor and air conditioner |
| CN213637249U (en) * | 2020-11-23 | 2021-07-06 | 珠海格力电器股份有限公司 | Motor rotor and permanent magnet motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112467903A (en) | 2021-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112467903B (en) | Motor rotors and permanent magnet motors | |
| CN102782989B (en) | Rotating electrical machine rotor | |
| TWM553518U (en) | Motor insulation structure | |
| CN213637249U (en) | Motor rotor and permanent magnet motor | |
| JP6207929B2 (en) | Permanent magnet rotating electric machine and elevator apparatus using the same | |
| JP7010309B2 (en) | Rotating machine rotor and rotating machine | |
| JP2017189003A (en) | Rotary electric machine | |
| JP2013093968A (en) | Rotary electric machine stator | |
| JP5495045B2 (en) | Rotating electrical machine rotor | |
| JP5319912B2 (en) | Electric motor | |
| BR102016001178A2 (en) | magnetic mass, magnetic material, rotor, electrical machine and manufacturing process for a rotor | |
| KR20160135393A (en) | Reducer integrated axial motor | |
| JP2009130945A (en) | Electric motor | |
| TW201909523A (en) | High-speed asynchronous motor rotor structure and motor comprising same | |
| CN104733969B (en) | A kind of hat type slip ring | |
| JP5763291B2 (en) | Rotating electric machine | |
| JP2013236425A (en) | Rotor of induction machine | |
| JP2015220950A (en) | Rotating electric machine | |
| WO2015081525A1 (en) | Cast aluminum rotor and motor using same | |
| CN219611579U (en) | Novel motor | |
| JP6569439B2 (en) | Rotating electric machine stator | |
| JP6737200B2 (en) | Rotor of rotating electric machine | |
| JP5368595B2 (en) | Rotating electric machine and fixing method of stator core of rotating electric machine | |
| JP2013247697A (en) | Rotor and rotary electric machine having the same | |
| JP2016171660A (en) | Rotor of dynamo-electric machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |