CN217508388U - Motor rotor and motor - Google Patents
Motor rotor and motor Download PDFInfo
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- CN217508388U CN217508388U CN202220865391.3U CN202220865391U CN217508388U CN 217508388 U CN217508388 U CN 217508388U CN 202220865391 U CN202220865391 U CN 202220865391U CN 217508388 U CN217508388 U CN 217508388U
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Abstract
The utility model relates to the technical field of motor manufacturing, and discloses a motor rotor and a motor, which comprises a rotor and a motor shaft; the rotor comprises a socket joint part; the motor shaft comprises a shaft main body, a shaft end part and a limiting part; the shaft end part is arranged at one end of the shaft main body, the limiting part is convexly arranged at the periphery of the shaft main body, the sleeve joint part is sleeved at the periphery of the shaft main body and is arranged between the shaft end part and the limiting part, and the limiting part and the shaft main body are integrally formed. Through will cup joint the portion and set up between axle tip and spacing portion, axle tip and spacing portion can carry on spacingly to cup joint the portion to prevent cup joint the portion and slide for the axle main part along the length direction of axle main part, thereby realize the assembly of motor shaft and rotor, through setting up spacing portion to with axle main part integrated into one piece, spacing portion is connected comparatively firm with the axle main part, spacing portion is difficult to separate with the axle main part, spacing portion is difficult to become invalid.
Description
Technical Field
The utility model relates to a motor manufacturing technology field especially relates to an electric motor rotor and motor.
Background
The motor rotor comprises a motor rotating shaft and a rotor fixed on the motor rotating shaft. The rotor is used for fixing the magnetic steel, and the motor rotating shaft is used for connecting the rotating part.
At present, the connection structure of the motor rotating shaft and the rotor is not firm, and the rotor and the motor rotating shaft can slide relatively due to the easy loosening in the long-term use process, so that the motor can be influenced in use.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an aim at providing an electric motor rotor and motor to solve among the prior art the connection structure of motor shaft and rotor and loosen easily and take off the problem that leads to rotor and motor shaft to produce relative slip.
The embodiment of the utility model provides a solve its technical problem and adopt following technical scheme: providing a motor rotor, which comprises a rotor and a motor shaft; the rotor includes a socket joint; the motor shaft comprises a shaft main body, a shaft end part and a limiting part; the shaft end part is arranged at one end of the shaft main body, the limiting part is convexly arranged at the periphery of the shaft main body, the sleeve part is sleeved at the periphery of the shaft main body and arranged between the shaft end part and the limiting part, and the limiting part and the shaft main body are integrally formed.
In some embodiments, the shaft body comprises a first shaft segment and a second shaft segment; the diameter of the first shaft section is greater than the diameter of the second shaft section; the end, far away from the second shaft section, of the first shaft section is connected with the shaft end part, the sleeving part is sleeved on the first shaft section, and the limiting part is arranged at the joint of the first shaft section and the second shaft section.
In some embodiments, the electric machine rotor further comprises a first bearing and a second bearing; the first bearing sleeve is arranged on the periphery of the end part of the shaft, and the second bearing sleeve is arranged on the periphery of one end, far away from the end part of the shaft, of the shaft main body.
In some embodiments, the shaft body further comprises a third shaft segment; the diameter of the second shaft section is greater than that of the third shaft section, the third shaft section is connected to one end, far away from the first shaft section, of the second shaft section, and the second bearing sleeve is arranged on the periphery of the third shaft section.
In some embodiments, the electric machine rotor further comprises a wave-shaped shrapnel; the wavy elastic sheet is sleeved on the periphery of the third shaft section and arranged between the end face of the second shaft section and the second bearing.
In some embodiments, the rotor further comprises a surround and a rotor end; the surrounding part surrounds the sleeving part, the inner ring of the end part of the rotor is connected with the sleeving part, and the outer ring of the end part of the rotor is connected with the surrounding part.
In some embodiments, the electric machine rotor further comprises a magnet holder and at least one magnet; the surrounding part surrounds the magnet support, the magnet support surrounds the shaft main body, at least one magnet accommodating groove is formed in the magnet support, and the at least one magnet is accommodated in the at least one magnet accommodating groove respectively.
In some embodiments, the shaft body is an interference fit with the socket.
In some embodiments, the electric machine rotor further comprises an induction magnet; the induction magnet is arranged on the end face of one end of the shaft main body, which is far away from the end part of the shaft.
The embodiment of the utility model provides a solve its technical problem and still adopt following technical scheme: there is provided an electrical machine comprising an electrical machine rotor as described above.
Compared with the prior art, the embodiment of the utility model provides an among electric motor rotor and the motor, through will cup joint the portion and set up between axle head portion and spacing portion, axle head portion and spacing portion can carry on spacingly to cup jointing the portion, slide for the axle main part along the length direction of axle main part with the prevention portion of cup jointing, thereby realize the assembly of motor shaft and rotor, through setting up spacing portion to with axle main part integrated into one piece, spacing portion is connected comparatively firm with the axle main part, spacing portion is difficult to separate with the axle main part, spacing portion is difficult to become invalid.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural diagram of an electric machine rotor according to an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of the rotor of the machine shown in FIG. 1;
FIG. 3 is a disassembled schematic view of the electric machine rotor shown in FIG. 1 under some embodiments;
fig. 4 is a schematic view of the internal structure of the motor rotor shown in fig. 3, in which a dotted line is a boundary line between a rotor end portion and a socket portion of the motor rotor;
fig. 5 is a schematic view of an internal structure of a motor according to another embodiment of the present invention.
The reference numerals are as shown in the following table
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "connected" to another element, it can be directly on the other element or intervening elements may be present. The terms "upper", "lower", "left", "right", "upper", "lower", "top" and "bottom" used in the present specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides an electric motor rotor 100, which includes a motor shaft 10 and a rotor 20. The motor shaft 10 includes a shaft body 12, a shaft end 14, and a stopper 16. The rotor 20 includes a socket 22. The shaft end 14 is disposed at one end of the shaft main body 12, the limiting portion 16 is convexly disposed at the periphery of the shaft main body 12, the sleeve portion 22 is sleeved at the periphery of the shaft main body 12 and disposed between the shaft end 14 and the limiting portion 16, and the limiting portion 16 and the shaft main body 12 are integrally formed.
By arranging the sleeve portion 22 between the shaft end portion 14 and the limiting portion 16, the shaft end portion 14 and the limiting portion 16 can limit the sleeve portion 22 to prevent the sleeve portion 22 from sliding relative to the shaft main body 12 along the length direction of the shaft main body 12, so that the motor shaft 10 and the rotor 20 can be assembled, by arranging the limiting portion 16 to be integrally formed with the shaft main body 12, the limiting portion 16 is firmly connected with the shaft main body 12, the limiting portion 16 is not easily separated from the shaft main body 12, and the limiting portion 16 is not easily failed.
The stopper portion 16 may be manufactured by a recoil heading process. Specifically, the shaft body 12 is a stepped shaft including a first shaft segment 120 and a second shaft segment 122. The diameter of the first shaft segment 120 is greater than the diameter of the second shaft segment 122. The end of the first shaft section 120 remote from the second shaft section 122 is connected to the shaft end 14. Before the recoil pier is pressed, the sleeve portion 22 is sleeved on the first shaft section 120, one end of the sleeve portion 22 abuts against the shaft end portion 14, and the end face of one end, far away from the shaft end portion 14, of the first shaft section 120 is slightly higher than the end face of the other end, far away from the shaft end portion 14, of the sleeve portion 22. The die used for the reverse upsetting may be a tubular structure having an inner diameter equal to or slightly larger than the diameter of the second shaft section 122 and smaller than the diameter of the first shaft section 120. During reverse upsetting, the die stamps one end of the first shaft section 120 far away from the shaft end 14, the stamped part of the first shaft section 120 deforms towards the direction far away from the second shaft section 122, and by controlling the stroke and pressure of stamping, the diameter of the stamped part of the first shaft section 120 is larger than the inner diameter of the sleeve part 22, the stamped part of the first shaft section 120 fits the end face of the sleeve part 22 far away from the other end of the shaft end 14, and at this time, the stamped part of the first shaft section 120 forms the limiting part 16. During the reverse upsetting, the second shaft section 122 can protrude into the tubular structure, so that the second shaft section 122 is not affected by the upsetting. The limiting part 16 is manufactured through a recoil pier pressing process, the process is simple, the processing cost is low, and mass production is facilitated.
The shaft main body 12 and the sleeve portion 22 are in interference fit, so that the occurrence of stamping errors caused by shaking of the sleeve portion 22 and the shaft main body 12 before the recoil pier pressing can be avoided.
The socket 26 has a substantially hollow cylindrical structure.
The rotor 20 also includes a surround portion 24 and a rotor end portion 26. The surrounding portion 24 surrounds the sleeve portion 22, the rotor end portion 26 is substantially annular, an inner ring of the rotor end portion 26 is connected to the sleeve portion 22, specifically, an outer circumferential surface of the connecting portion 22, an end surface of the rotor end portion 26 close to the shaft end portion 14 may be flush with an end surface of the sleeve portion 22 close to the shaft end portion 14, and an end surface of the rotor end portion 26 close to the shaft end portion 14 may be slightly higher or lower than an end surface of the sleeve portion 22 close to the shaft end portion 14.
The outer race of the rotor end 26 is connected to the surround 24.
The shaft end 14 abuts the socket 22 and/or the rotor end 26. Wherein, when the end face 2600 of the rotor end 26 near the shaft end 14 may be flush with the end face 2200 of the socket 22 near the shaft end 14, the shaft end 14 abuts against both the socket 22 and the rotor end 26; when the end face 2600 of the rotor end 26 near the shaft end 14 is slightly higher than the end face 2200 of the socket 22 near the shaft end 14, the shaft end 14 abuts the rotor end 26; when the end face 2600 of the rotor end 26 near the shaft end 14 is slightly lower than the end face 2200 of the socket 22 near the shaft end 14, the shaft end 14 abuts the socket 22.
Referring to fig. 3 and 4, the rotor 100 further includes a magnet holder 30 and at least one magnet 40. The magnet holder 30 has a ring-shaped configuration, the surrounding portion 24 surrounds the magnet holder 30, and the magnet holder 30 surrounds the shaft body 12. The magnet holder 30 is formed with at least one magnet receiving groove 31. The at least one magnet 40 is received in the at least one magnet receiving groove 31. When the number of the magnets 40 is at least two and the number of the magnet receiving grooves 31 is at least two, the at least two magnet receiving grooves 31 are spaced apart to space the adjacent magnets 40 apart, so that interference between the adjacent magnets 40 can be reduced. The magnet holder 30 and the at least one magnet 40 may be fixed to the inner wall of the surrounding portion 24 by a glue, and may also be welded to the inner wall of the surrounding portion 24 according to actual requirements, which is not limited in this application.
The magnet holder 30 includes a first magnet holder 32 and a second magnet holder 34. The first magnet holder 32 includes a first annular portion 320 and a first raised portion 322. The surrounding portion 24 surrounds the first annular portion 320, the first annular portion 320 surrounds the shaft body 12, the first annular portion 320 is disposed on one side of at least one magnet 40 close to the rotor end portion 26, and a first protruding portion 322 is disposed in a gap between every two adjacent magnets 40. The second magnet holder 34 includes a second annular portion 340 and a second raised portion 342. The surrounding portion 24 surrounds the second annular portion 340, the second annular portion 340 surrounds the shaft body 12, the second annular portion 340 is disposed on the other side of the at least one magnet 40 away from the rotor end 26, and a second protrusion 342 is disposed in each gap between every two adjacent magnets 40.
The magnet 40 may be magnetic steel.
The motor rotor 100 further includes a first bearing 50 and a second bearing 60. The first bearing 50 is sleeved on the outer periphery of the shaft end 14, and the second bearing 60 is sleeved on the outer periphery of one end of the shaft main body 12 far away from the shaft end 14. The first bearing 50 and the second bearing 60 can function to support the motor shaft 10.
The first bearing 50 abuts the rotor end 26 and the rotor end 26 is capable of functioning to support the first bearing 50. Specifically, the rotor end 26 includes a raised portion 260 and a non-raised portion 262. The non-bulging portion 262 encircles the bulging portion 260 and the bulging portion 260 encircles the socket portion 22. The ridge 260 has a step between the non-ridge 262. The first bearing 50 includes an inner race portion 52 and an outer race portion 54. The inner ring portion 52 is sleeved on the outer periphery of the shaft end portion 14 and fixed with the shaft end portion 14, and the shaft end portion 14 can be in interference fit with the inner ring portion 52 to realize fixation with the inner ring portion 52. The outer race portion 54 surrounds the inner race portion 52, and the outer race portion 54 is rotatable relative to the inner race portion 52. The inner race 52 abuts the raised portion 260, and the raised portion 260 can function to support the first bearing 50. There is a gap between the outer race portion 54 and the non-raised portion 262 so that the rotor end portion 26 does not interfere with the rotation of the outer race portion 54.
The shaft body 12 also includes a third shaft segment 124. The diameter of the second shaft section 122 is larger than that of the third shaft section 124, the third shaft section 124 is connected to an end of the second shaft section 122 far away from the first shaft section 120, and the second bearing 60 is sleeved on the outer periphery of the third shaft section 124.
The motor rotor 100 further includes a wave-shaped spring plate 70. The wave-shaped elastic sheet 70 is sleeved on the periphery of the third shaft section 124 and arranged between the end surface of the second shaft section 122 and the second bearing 60, and the wave-shaped elastic sheet 70 can prevent the second bearing 60 from shaking due to assembly deficiency.
The motor rotor 100 further includes an induction magnet 80. The induction magnet 80 is provided on an end surface of the shaft main body 12 at an end remote from the shaft end portion 14. The induction magnet 80 is used for cooperating with the magnetic induction device of motor, and magnetic induction device can be for magnetic encoder, hall inductor, proximity switch etc. can sense induction magnet 80 pivoted device, and magnetic induction device rotates in order to realize detecting motor shaft 10 pivoted number of turns or position through induction magnet 80.
The motor rotor 100 also includes a magnet mount 90. A magnet mount 90 is fixed to an end surface of the shaft main body 12 at an end remote from the shaft end 14, and the induction magnet 80 is fixed to the magnet mount 90. A screw hole 126 is formed on the end face of one end of the shaft main body 12 far away from the shaft end 14, a stud 92 is convexly arranged on the magnet mounting seat 90, and the stud 92 extends into the screw hole 126 and is in threaded connection with the screw hole 126. The magnet mounting seat 90 is provided with a magnet mounting groove 94, and the induction magnet 80 is accommodated in the magnet mounting groove 94.
Referring to fig. 5, another embodiment of the present invention provides a motor 200 including the motor rotor 100 according to the foregoing embodiments. The motor 200 also includes a motor housing 202 and a motor end cap 204. The motor rotor 100 is accommodated in the motor housing 202, and the motor end cover 204 covers the motor housing 202.
The first bearing 50 is sleeved on the inner periphery of the motor end cover 204, the second bearing 60 is sleeved on the inner periphery of the motor housing 202, and the motor end cover 204 is provided with a hole 2040 exposing the shaft end 14.
The motor 200 also includes a magnetic induction device 206. A magnetic induction device 206 is secured to the motor housing 202, the position of the magnetic induction device 206 corresponding to the position of the induction magnet 80.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A motor rotor is characterized by comprising a rotor and a motor shaft; the rotor includes a socket joint; the motor shaft comprises a shaft main body, a shaft end part and a limiting part; the shaft end part is arranged at one end of the shaft main body, the limiting part is convexly arranged at the periphery of the shaft main body, the sleeve joint part is sleeved at the periphery of the shaft main body and is arranged between the shaft end part and the limiting part, and the limiting part and the shaft main body are integrally formed.
2. The electric machine rotor of claim 1, wherein the shaft body comprises a first shaft segment and a second shaft segment; the diameter of the first shaft section is greater than the diameter of the second shaft section; the end, far away from the second shaft section, of the first shaft section is connected with the shaft end part, the sleeving part is sleeved on the periphery of the first shaft section, and the limiting part is arranged at the joint of the first shaft section and the second shaft section.
3. The electric machine rotor of claim 2, further comprising a first bearing and a second bearing; the first bearing sleeve is arranged on the periphery of the end part of the shaft, and the second bearing sleeve is arranged on the periphery of one end, far away from the end part of the shaft, of the shaft main body.
4. The electric machine rotor of claim 3, wherein the shaft body further comprises a third shaft segment; the diameter of the second shaft section is greater than that of the third shaft section, the third shaft section is connected to one end, far away from the first shaft section, of the second shaft section, and the second bearing sleeve is arranged on the periphery of the third shaft section.
5. The electric machine rotor of claim 4, further comprising a wave-shaped spring plate; the wavy elastic sheet is sleeved on the periphery of the third shaft section and arranged between the end face of the second shaft section and the second bearing.
6. The electric machine rotor of claim 1, wherein the rotor further comprises a surround and a rotor end; the surrounding part surrounds the sleeving part, the inner ring of the end part of the rotor is connected with the sleeving part, and the outer ring of the end part of the rotor is connected with the surrounding part.
7. The electric machine rotor of claim 6, further comprising a magnet holder and at least one magnet; the surrounding part surrounds the magnet support, the magnet support surrounds the shaft main body, at least one magnet accommodating groove is formed in the magnet support, and the at least one magnet is accommodated in the at least one magnet accommodating groove respectively.
8. The electric machine rotor of claim 1, wherein the shaft body is an interference fit with the socket.
9. The electric machine rotor as recited in claim 1, further comprising induction magnets; the induction magnet is arranged on the end face of one end of the shaft main body, which is far away from the end part of the shaft.
10. An electrical machine comprising an electrical machine rotor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220865391.3U CN217508388U (en) | 2022-04-15 | 2022-04-15 | Motor rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220865391.3U CN217508388U (en) | 2022-04-15 | 2022-04-15 | Motor rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217508388U true CN217508388U (en) | 2022-09-27 |
Family
ID=83350513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220865391.3U Active CN217508388U (en) | 2022-04-15 | 2022-04-15 | Motor rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217508388U (en) |
-
2022
- 2022-04-15 CN CN202220865391.3U patent/CN217508388U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |