CN112737169A - Motor rotor structure and motor - Google Patents
Motor rotor structure and motor Download PDFInfo
- Publication number
- CN112737169A CN112737169A CN202110019383.7A CN202110019383A CN112737169A CN 112737169 A CN112737169 A CN 112737169A CN 202110019383 A CN202110019383 A CN 202110019383A CN 112737169 A CN112737169 A CN 112737169A
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- Prior art keywords
- iron core
- rotor structure
- hole
- support frame
- magnet
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- 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
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- 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
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The invention provides a motor rotor structure and a motor, wherein the motor rotor structure comprises: the body structure comprises an outer iron core, a magnet and a support frame, wherein the outer iron core and the magnet are both arranged on the support frame; the supporting frame is provided with a through hole; the inner wall of the through hole is provided with a plurality of first protruding parts which are arranged at intervals along the direction surrounding the preset axis; the inner iron core is used for being connected with the rotating shaft; the inner iron core is arranged in the through hole, the outer side wall of the inner iron core is provided with a plurality of second protruding parts, and the second protruding parts are arranged at intervals along the direction surrounding the preset axis; the shock absorption piece is formed by solidifying a rubber material injected into a gap between the support frame and the inner iron core; at least part of the shock absorbing member is made of an elastomeric material. The motor rotor structure solves the problem of low structural strength of the motor rotor structure in the related art.
Description
Technical Field
The invention relates to the field of motors, in particular to a motor rotor structure and a motor.
Background
When the permanent magnet synchronous motor is used, the motor is easy to vibrate due to torque pulsation. In the motor in the related art, the damping rubber is arranged between the inner iron core and the outer iron core of the rotor structure to reduce the torque ripple output vibration, so that the noise of the motor is reduced.
However, in the above-described motor structure in the related art, it is difficult for the damper rubber to achieve stable connection between the inner core and the outer core, resulting in a poor ability of the motor rotor structure to withstand shear stress. Therefore, the structural strength of the motor rotor is greatly affected.
Disclosure of Invention
The invention mainly aims to provide a motor rotor structure and a motor, and aims to solve the problem that the motor rotor structure in the related art is low in structural strength.
In order to achieve the above object, according to one aspect of the present invention, there is provided a rotor structure of an electric motor, comprising: the body structure comprises an outer iron core, a magnet and a support frame, wherein the outer iron core and the magnet are both arranged on the support frame; the supporting frame is provided with a through hole; the inner wall of the through hole is provided with a plurality of first protruding parts which are arranged at intervals along the direction surrounding the preset axis; the inner iron core is used for being connected with the rotating shaft; the inner iron core is arranged in the through hole, the outer side wall of the inner iron core is provided with a plurality of second protruding parts, and the second protruding parts are arranged at intervals along the direction surrounding the preset axis; the shock absorption piece is formed by solidifying a rubber material injected into a gap between the support frame and the inner iron core; at least part of the shock absorbing member is made of an elastomeric material.
Further, the plurality of first protruding portions and the plurality of second protruding portions are arranged in a staggered mode along the direction surrounding the preset axis.
Further, a minimum distance of each first boss to the predetermined axis is less than a maximum distance of each second boss to the predetermined axis.
Further, the predetermined axis is arranged along a preset direction; the shock absorption piece comprises a first pressing part contacted with the end face of the support frame and a second pressing part contacted with the end face of the inner iron core; the thickness of the first pressing part along the preset direction is a, and the thickness of the second pressing part along the preset direction is b; wherein b > 2 a; the inner iron core is provided with a shaft hole matched with the rotating shaft, and the first pressing part is provided with a first avoidance hole for avoiding the shaft hole; the diameter of the first pressing part is
The diameter of the first avoiding hole is
Wherein the content of the first and second substances,
further, the contact area between the damper and the end face of the body structure is S1, and the contact area between the damper and the end face of the inner core is S2; wherein S1 is more than 2 × S2.
Further, the support frame is formed by injection molding on the outer surfaces of the outer iron core and the magnet; the outer iron core is provided with a positioning groove, and the position of the support frame corresponding to the positioning groove is provided with a first positioning hole.
Furthermore, a second positioning hole is formed in the position, corresponding to the magnet, of the support frame.
Furthermore, the outer iron core is provided with a connecting hole, the support frame is provided with a connecting column, and the connecting column is matched with the connecting hole.
Further, the thickness of the inner iron core along the direction of the preset axis is smaller than that of the body structure along the direction of the preset axis.
Further, the outer iron cores and the magnets are all multiple, and the outer iron cores and the magnets are arranged in a staggered mode in the direction surrounding the preset axis; each outer iron core is provided with a first end and a second end which are oppositely arranged along the radial direction of the motor rotor structure, the first end of each outer iron core is provided with a first clamping part, and the second end of each outer iron core is provided with a second clamping part; the first clamping portion and the second clamping portion are clamped with the corresponding magnets to limit radial movement of the magnets along the motor rotor structure.
Further, the maximum distance of the outer iron core to the predetermined axis is greater than the maximum distance of the magnet to the predetermined axis; the support frame comprises a plurality of reinforcing parts which extend along the direction of the preset axis, and the plurality of reinforcing parts and the plurality of magnets are arranged in a one-to-one correspondence manner; each reinforcement portion is located on a side of the corresponding magnet away from the through hole.
Further, the body structure is provided with a first end and a second end which are oppositely arranged along the direction of the preset axis; a blocking piece is arranged at the first end of the body structure and/or the second end of the body structure, and a second avoidance hole for avoiding the rotating shaft is formed in the blocking piece; the separation blade is connected with the body structure, and the separation blade is abutted to the damping piece.
According to another aspect of the present invention, there is provided an electric machine comprising an electric machine rotor structure and an electric machine stator structure disposed around the electric machine rotor structure, the electric machine rotor structure being as described above.
The motor rotor structure applying the technical scheme of the invention comprises: the body structure comprises an outer iron core, a magnet and a support frame, wherein the outer iron core and the magnet are both arranged on the support frame; the supporting frame is provided with a through hole; the inner wall of the through hole is provided with a plurality of first protruding parts which are arranged at intervals along the direction surrounding the preset axis; the inner iron core is used for being connected with the rotating shaft; the inner iron core is arranged in the through hole, the outer side wall of the inner iron core is provided with a plurality of second protruding parts, and the second protruding parts are arranged at intervals along the direction surrounding the preset axis; the shock absorption piece is formed by solidifying a rubber material injected into a gap between the support frame and the inner iron core; at least part of the shock absorbing member is made of an elastomeric material. Through adopting this kind of structural design, glue the material and pour into the gap between support frame and the interior iron core and solidify and form deformable shock attenuation piece after, can reduce the torque output vibration of electric motor rotor structure through shock attenuation piece to reduce the noise of electric motor rotor structure during operation. Because the internal face of the through-hole on the support frame is equipped with a plurality of first bellyings and the outer wall of interior iron core is equipped with a plurality of second bellyings, like this, after the injecting glue between support frame and the interior iron core, can increase the adhesive force between damper and support frame, the interior iron core effectively to improve motor support frame, damper and the position department that interior iron core is connected and born the ability of shear stress, compromise the shock attenuation effect of electric motor rotor structure and electric motor rotor structure's intensity.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 illustrates a schematic structural view of one embodiment of a rotor structure of an electric machine according to the present invention;
FIG. 2 illustrates a cross-sectional structural schematic view of an embodiment of a rotor structure of an electric machine according to the present invention;
FIG. 3 illustrates a schematic view of an embodiment of a rotor structure of an electric machine according to the present invention with the damper removed;
FIG. 4 is a schematic view of an embodiment of a rotor structure of an electric machine according to the present invention with the damper and the support bracket removed;
FIG. 5 shows a schematic view of a body structure of an embodiment of a rotor structure of an electric machine according to the invention;
FIG. 6 illustrates a schematic structural view of another embodiment of a rotor structure of an electric machine according to the present invention;
FIG. 7 shows a cross-sectional structural view of a first embodiment of a rotor structure of an electric machine according to the invention;
FIG. 8 shows a cross-sectional structural view of a second embodiment of a rotor structure of an electric machine according to the invention;
fig. 9 shows a schematic cross-sectional structural view of a third embodiment of the rotor structure of an electric machine according to the invention.
Wherein the figures include the following reference numerals:
1. a body structure; 11. an outer core; 111. positioning a groove; 112. a first engaging portion; 113. a second engaging portion; 114. connecting holes; 12. a magnet; 13. a support frame; 130. a through hole; 131. a first boss portion; 132. a first positioning hole; 133. a second positioning hole; 134. a reinforcing portion; 2. an inner core; 21. a second boss portion; 3. a shock absorbing member; 31. a first press-fitting portion; 32. a second press-fitting portion; 4. a baffle plate; 41. a clamping part.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 9, the present invention provides a rotor structure of a motor, including: the magnetic iron core comprises a body structure 1, wherein the body structure 1 comprises an outer iron core 11, a magnet 12 and a support frame 13, and the outer iron core 11 and the magnet 12 are both arranged on the support frame 13; the supporting frame 13 has a through hole 130; the inner wall of the through hole 130 is provided with a plurality of first protrusions 131, and the plurality of first protrusions 131 are arranged at intervals in a direction around a predetermined axis; the inner iron core 2 is used for being connected with the rotating shaft; the inner iron core 2 is arranged in the through hole 130, the outer side wall of the inner iron core 2 is provided with a plurality of second protruding parts 21, and the plurality of second protruding parts 21 are arranged at intervals along the direction surrounding the preset axis; the damping piece 3 is formed by solidifying a rubber material injected into a gap between the support frame 13 and the inner iron core 2; at least part of the shock absorbing member 3 is made of an elastomer material.
The motor rotor structure of the present invention includes: the magnetic iron core comprises a body structure 1, wherein the body structure 1 comprises an outer iron core 11, a magnet 12 and a support frame 13, and the outer iron core 11 and the magnet 12 are both arranged on the support frame 13; the supporting frame 13 has a through hole 130; the inner wall of the through hole 130 is provided with a plurality of first protrusions 131, and the plurality of first protrusions 131 are arranged at intervals in a direction around a predetermined axis; the inner iron core 2 is used for being connected with the rotating shaft; the inner iron core 2 is arranged in the through hole 130, the outer side wall of the inner iron core 2 is provided with a plurality of second protruding parts 21, and the plurality of second protruding parts 21 are arranged at intervals along the direction surrounding the preset axis; the damping piece 3 is formed by solidifying a rubber material injected into a gap between the support frame 13 and the inner iron core 2; at least part of the shock absorbing member 3 is made of an elastomer material. Through adopting this kind of structural design, glue the material and pour into the gap between support frame 13 and the interior iron core 2 and solidify and form deformable damper 3 after, can reduce the torque output vibration of electric motor rotor structure through damper 3 to reduce the noise of electric motor rotor structure during operation. Because the internal face of through-hole 130 on support frame 13 is equipped with a plurality of first bellying 131 and the outer wall of interior iron core 2 is equipped with a plurality of second bellying 21, like this, after the injecting glue between support frame 13 and interior iron core 2, can increase damper 3 and support frame 13 effectively, adhesive force between the interior iron core 2, thereby improve motor support frame 13, the position department that damper 3 and interior iron core 2 are connected bears the ability of cutting stress, the shock attenuation effect of motor rotor structure and the intensity of motor rotor structure have been compromise.
With respect to the motor rotor structure, it is understood that the predetermined axis coincides with the rotational axis of the motor rotor structure. That is, the motor rotor structure has a rotation axis (i.e., a central axis of the motor rotor structure) about which the motor rotor structure rotates during operation, and a hole center line of the through hole 130 coincides with the rotation axis of the motor rotor structure. When the motor rotor structure is used, the inner iron core 2 is connected with the rotating shaft so as to drive the rotating shaft to rotate, and the axis of the rotating shaft is superposed with the rotating shaft of the motor rotor structure. Because be equipped with first bellying 131 on the support frame 13, be equipped with second bellying 21 on the interior iron core 2, after the glue material pours into the gap between support frame 13 and the interior iron core 2 into, support frame 13 and interior iron core 2 can form the mounting means of inlaying and establishing in damper 3, improve the joint strength between the former two and the latter effectively, on the basis of realizing shock-absorbing function, guarantee motor rotor structure's structural strength. At least part of the damping member 3 is made of elastomer material, that is, the damping member 3 has certain elasticity and can play a certain buffering effect when stressed, thereby realizing the damping effect.
The thickness of the position of the shock absorbing member 3 where the thickness is the smallest is h, and the value range of h is 0.8mm to 1.5 mm. The value range of minimum distance between interior iron core 2 and the support frame 13 is 0.8mm to 1.5mm promptly, like this, can realize good shock attenuation effect, noise when reducing motor rotor structure and using.
In the present embodiment, the damper 3 is made of ethylene propylene diene monomer rubber or silicone rubber.
Specifically, the plurality of first protrusions 131 and the plurality of second protrusions 21 are arranged in a staggered manner in a direction around the predetermined axis.
That is, in the circumferential direction of the motor rotor structure, the first protruding portions 131 and the second protruding portions 21 are arranged in a staggered manner, one second protruding portion 21 is provided between any two first protruding portions 131, and one first protruding portion 131 is provided between any two second protruding portions 21. Like this, be favorable to further improving the connection effect between damper 3 and support frame 13 and the interior iron core 2, improve electric motor rotor structure's intensity.
Specifically, the minimum distance of each first boss 131 to the predetermined axis is smaller than the maximum distance of each second boss 21 to the predetermined axis.
By adopting such a structural design, the end of each first protruding portion 131 is inserted into the gap between two adjacent second protruding portions 21, and the end of each second protruding portion 21 is inserted into the gap between two adjacent first protruding portions 131; and the glue injection structure between the support frame 13 and the inner iron core 2 is matched, so that the capability of bearing tangential stress at the connecting position can be effectively improved, and the stability of the motor rotor structure during working is improved.
Specifically, the predetermined axis is arranged along a preset direction; the damper 3 includes a first press portion 31 contacting with the end surface of the support frame 13 and a second press portion 32 contacting with the end surface of the inner core 2; the thickness of the first pressing part 31 along the preset direction is a, and the thickness of the second pressing part 32 along the preset direction is b; wherein b > 2 a; the inner iron core 2 is provided with a shaft hole matched with the rotating shaft, and the first pressing part 31 is provided with a first avoidance hole for avoiding the shaft hole; the diameter of the first press-fit portion 31 is
The diameter of the first avoiding hole is
Wherein the content of the first and second substances,
by adopting the structural design, the axial bearing capacity of the motor rotor structure can be effectively improved, and the stability of the motor rotor structure is improved.
In addition, when the first pressing portion 31 has a ring-shaped structure,
as the outer diameter of the annular structure, when the first press-setting portion 31 is not the annular structure,
is the equivalent diameter of the first press portion 31 (the outer diameter of the ring structure having the same cross section as the first press portion 31). Similarly, when the first avoiding hole is a circular hole,
the diameter of the circular hole, when the first avoiding hole is not circular,
is the equivalent diameter of the first avoidance hole (the diameter of a circular hole having the same cross-sectional area as the first avoidance hole).
Specifically, the contact area between the damper 3 and the end face of the body structure 1 is S1, and the contact area between the damper 3 and the end face of the inner core 2 is S2; wherein S1 is more than 2 × S2.
Specifically, the support frame 13 is formed by injection molding on the outer surfaces of the outer iron core 11 and the magnet 12; the outer iron core 11 is provided with a positioning groove 111, and the support frame 13 is provided with a first positioning hole 132 at a position corresponding to the positioning groove 111.
Through adopting this kind of structural design, in body structure 1 course of working, with outer iron core 11 and magnet 12 assembly back, thereby the first location portion on the accessible injection mold inserts in the constant head tank 111 on the outer iron core 11 play location and fixed effect to outer iron core 11, thereby can guarantee outer iron core 11, the relative position between magnet 12 and the injection mold is accurate, guarantee that the support frame 13 that forms after moulding plastics can wrap up outer iron core 11 and magnet 12 uniformly, make things convenient for body structure 1's processing and can improve body structure 1's processing effect. After the injection molding is completed, due to the effect of the first positioning portion, the first positioning hole 132 for avoiding the first positioning portion is formed on the supporting frame 13.
In the present embodiment, the support frame 13 is made of nylon, PET or PBT material.
Specifically, the support frame 13 is provided with a second positioning hole 133 at a position corresponding to the magnet 12.
Through adopting above-mentioned structure setting, when moulding plastics, thereby the second location portion on the accessible injection mold contacts with magnet 12 and carries out further location to magnet 12, improves the positioning accuracy and the location reliability to magnet 12, ensures the relative position precision of outer iron core 11 and magnet 12 to improve the machining precision of electric motor rotor structure. After the injection molding is completed, due to the action of the second positioning portion, a second positioning hole 133 for avoiding the second positioning portion is formed on the supporting frame 13.
Specifically, the outer iron core 11 is provided with a connecting hole 114, and the support frame 13 is provided with a connecting column, which is matched with the connecting hole 114.
Because the outer iron core 11 is provided with the connecting hole 114, when the outer iron core 11 and the magnet 12 are injected, the material can enter the connecting hole 114, and a connecting column penetrating the connecting hole 114 is formed after solidification, so that the outer iron core 11 and the support frame 13 are connected more stably, and the structural strength of the body structure 1 is ensured.
Specifically, the thickness of the inner core 2 in the direction of the predetermined axis is smaller than the thickness of the body structure 1 in the direction of the predetermined axis.
Through adopting this kind of structure setting, can form bigger filling space at the tip of inner core 2 and come the worker to glue the material and pour into and form damper 3 to improve damper 3's thickness, promote motor rotor structure's axial bearing capacity.
Specifically, the outer cores 11 and the magnets 12 are each plural, and the plural outer cores 11 and the plural magnets 12 are arranged alternately in a direction around a predetermined axis; each outer iron core 11 is provided with a first end and a second end which are oppositely arranged along the radial direction of the motor rotor structure, the first end of the outer iron core 11 is provided with a first clamping part 112, and the second end of the outer iron core 11 is provided with a second clamping part 113; the first and second engagement portions 112 and 113 each engage a respective magnet 12 to limit radial movement of the magnets 12 along the rotor structure of the motor.
Specifically, the maximum distance of the outer core 11 to the predetermined axis is greater than the maximum distance of the magnet 12 to the predetermined axis; the support frame 13 includes a plurality of reinforcing portions 134 extending in the direction of the predetermined axis, the plurality of reinforcing portions 134 being disposed in one-to-one correspondence with the plurality of magnets 12; each reinforcement 134 is located on a side of the respective magnet 12 remote from the through-hole 130.
Specifically, the body structure 1 has a first end and a second end which are oppositely arranged along the direction of the predetermined axis; a blocking piece 4 is arranged at the first end of the body structure 1 and/or the second end of the body structure 1, and a second avoidance hole for avoiding the rotating shaft is formed in the blocking piece 4; the baffle 4 is connected with the body structure 1, and the baffle 4 is abutted against the damping piece 3.
In particular embodiments, the flap 4 may be connected to the body structure 1 in various ways, such as by pressing, riveting, screwing, etc. In this embodiment, the blocking piece 4 has a clamping portion 41, and the clamping portion 41 is clamped in the positioning groove 111 or the first positioning hole 132, so that the blocking piece 4 is clamped and matched with the body structure 1, and the assembly or the disassembly of the motor rotor structure is facilitated.
In addition, the invention also provides a motor, which comprises a motor rotor structure and a motor stator structure arranged around the motor rotor structure, wherein the motor rotor structure is the motor rotor structure.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the motor rotor structure of the present invention includes: the magnetic iron core comprises a body structure 1, wherein the body structure 1 comprises an outer iron core 11, a magnet 12 and a support frame 13, and the outer iron core 11 and the magnet 12 are both arranged on the support frame 13; the supporting frame 13 has a through hole 130; the inner wall of the through hole 130 is provided with a plurality of first protrusions 131, and the plurality of first protrusions 131 are arranged at intervals in a direction around a predetermined axis; the inner iron core 2 is used for being connected with the rotating shaft; the inner iron core 2 is arranged in the through hole 130, the outer side wall of the inner iron core 2 is provided with a plurality of second protruding parts 21, and the plurality of second protruding parts 21 are arranged at intervals along the direction surrounding the preset axis; the damping piece 3 is formed by solidifying a rubber material injected into a gap between the support frame 13 and the inner iron core 2; at least part of the shock absorbing member 3 is made of an elastomer material. Through adopting this kind of structural design, glue the material and pour into the gap between support frame 13 and the interior iron core 2 and solidify and form deformable damper 3 after, can reduce the torque output vibration of electric motor rotor structure through damper 3 to reduce the noise of electric motor rotor structure during operation. Because the internal face of through-hole 130 on support frame 13 is equipped with a plurality of first bellying 131 and the outer wall of interior iron core 2 is equipped with a plurality of second bellying 21, like this, after the injecting glue between support frame 13 and interior iron core 2, can increase damper 3 and support frame 13 effectively, adhesive force between the interior iron core 2, thereby improve motor support frame 13, the position department that damper 3 and interior iron core 2 are connected bears the ability of cutting stress, the shock attenuation effect of motor rotor structure and the intensity of motor rotor structure have been compromise.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. An electric machine rotor structure, comprising:
the magnetic iron core comprises a body structure (1), wherein the body structure (1) comprises an outer iron core (11), a magnet (12) and a support frame (13), and the outer iron core (11) and the magnet (12) are both mounted on the support frame (13); the support frame (13) is provided with a through hole (130); the inner wall of the through hole (130) is provided with a plurality of first protruding parts (131), and the first protruding parts (131) are arranged at intervals along the direction surrounding the preset axis;
the inner iron core (2) is connected with the rotating shaft; the inner iron core (2) is arranged in the through hole (130), a plurality of second protruding parts (21) are arranged on the outer side wall of the inner iron core (2), and the second protruding parts (21) are arranged at intervals along the direction surrounding the preset axis;
the damping piece (3) is formed by solidifying a rubber material injected into a gap between the support frame (13) and the inner iron core (2); at least part of the shock absorbing member (3) is made of an elastomeric material.
2. The electric machine rotor structure according to claim 1, characterized in that a plurality of the first protrusions (131) and a plurality of the second protrusions (21) are arranged offset in a direction around the predetermined axis.
3. The electric machine rotor structure according to claim 2, characterized in that the minimum distance of each first projection (131) to the predetermined axis is smaller than the maximum distance of each second projection (21) to the predetermined axis.
4. The electric machine rotor structure of claim 1, wherein the predetermined axis is arranged in a preset direction; the shock absorption piece (3) comprises a first pressing part (31) contacted with the end face of the support frame (13) and a second pressing part (32) contacted with the end face of the inner iron core (2); the thickness of the first pressing part (31) along the preset direction is a, and the thickness of the second pressing part (32) along the preset direction is b; wherein b > 2 a;
the inner iron core (2) is provided with a shaft hole matched with the rotating shaft, and the first pressing part (31) is provided with a first avoidance hole for avoiding the shaft hole; the first press-fitting part (31) has a diameter of
The diameter of the first avoidance hole is
Wherein the content of the first and second substances,
5. the electric motor rotor structure according to claim 1, characterized in that the contact area between the damper (3) and the end face of the body structure (1) is S1, the contact area between the damper (3) and the end face of the inner core (2) is S2; wherein S1 is more than 2 × S2.
6. The electric machine rotor structure according to claim 1, characterized in that the support frame (13) is injection molded on the outer surfaces of the outer iron core (11) and the magnet (12);
be equipped with constant head tank (111) on outer iron core (11), support frame (13) go up with the position department that constant head tank (111) correspond is equipped with first locating hole (132).
7. The electric machine rotor structure according to claim 6, characterized in that a second positioning hole (133) is provided on the support frame (13) at a position corresponding to the magnet (12).
8. The electric motor rotor structure according to claim 6, characterized in that the outer iron core (11) is provided with a connecting hole (114), the support frame (13) is provided with a connecting column, and the connecting column is matched with the connecting hole (114).
9. The electric machine rotor structure according to claim 1, characterized in that the thickness of the inner core (2) in the direction of the predetermined axis is smaller than the thickness of the body structure (1) in the direction of the predetermined axis.
10. The electric machine rotor structure according to claim 1, wherein the outer core (11) and the magnets (12) are each plural, and the plural outer cores (11) and the plural magnets (12) are arranged alternately in a direction around the predetermined axis;
each outer iron core (11) is provided with a first end and a second end which are oppositely arranged along the radial direction of the motor rotor structure, the first end of each outer iron core (11) is provided with a first clamping part (112), and the second end of each outer iron core (11) is provided with a second clamping part (113); first card establishes portion (112) with second card establishes portion (113) all with corresponding magnet (12) joint to the restriction magnet (12) are followed the radial motion of electric motor rotor structure.
11. The electric machine rotor structure according to claim 10, characterized in that the maximum distance of the outer core (11) to the predetermined axis is greater than the maximum distance of the magnet (12) to the predetermined axis;
the supporting frame (13) comprises a plurality of reinforcing parts (134) extending along the direction of the preset axis, and the plurality of reinforcing parts (134) and the plurality of magnets (12) are arranged in a one-to-one correspondence manner; each reinforcement portion (134) is located on a side of the corresponding magnet (12) remote from the through hole (130).
12. The electric machine rotor structure according to claim 1, characterized in that the body structure (1) has a first end and a second end arranged opposite in the direction of the predetermined axis; a blocking piece (4) is arranged at the first end of the body structure (1) and/or the second end of the body structure (1), and a second avoidance hole for avoiding the rotating shaft is formed in the blocking piece (4); the separation blade (4) is connected with the body structure (1), and the separation blade (4) is abutted to the damping piece (3).
13. An electrical machine comprising an electrical machine rotor structure and an electrical machine stator structure arranged around the electrical machine rotor structure, the electrical machine rotor structure being as claimed in any one of claims 1 to 12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110019383.7A CN112737169A (en) | 2021-01-07 | 2021-01-07 | Motor rotor structure and motor |
| PCT/CN2021/124319 WO2022148085A1 (en) | 2021-01-07 | 2021-10-18 | Electric motor rotor structure and electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110019383.7A CN112737169A (en) | 2021-01-07 | 2021-01-07 | Motor rotor structure and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112737169A true CN112737169A (en) | 2021-04-30 |
Family
ID=75589616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110019383.7A Pending CN112737169A (en) | 2021-01-07 | 2021-01-07 | Motor rotor structure and motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112737169A (en) |
| WO (1) | WO2022148085A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364174A (en) * | 2021-05-25 | 2021-09-07 | 浙江亚特电器有限公司 | Combined salient pole type motor rotor and motor |
| CN113489198A (en) * | 2021-08-03 | 2021-10-08 | 珠海格力电器股份有限公司 | Motor rotor, motor and air conditioner |
| WO2022148085A1 (en) * | 2021-01-07 | 2022-07-14 | 珠海格力电器股份有限公司 | Electric motor rotor structure and electric motor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202978488U (en) * | 2012-11-30 | 2013-06-05 | 中山大洋电机股份有限公司 | Damping rotor structure |
| CN104753217B (en) * | 2015-04-08 | 2018-02-27 | 江苏富天江电子电器有限公司 | A kind of assembled damping rotor structure of motor |
| JP6922153B2 (en) * | 2015-12-22 | 2021-08-18 | 株式会社デンソー | Randel type rotor and Randel type motor |
| CN107947406A (en) * | 2017-11-09 | 2018-04-20 | 合肥市通得力电气制造有限公司 | One kind insulation vibration damping injecting glue rotor |
| CN209627077U (en) * | 2018-12-26 | 2019-11-12 | 卧龙电气集团股份有限公司 | Motor shock absorption rotor |
| CN214045216U (en) * | 2021-01-07 | 2021-08-24 | 珠海格力电器股份有限公司 | Motor rotor structure and motor |
| CN112737169A (en) * | 2021-01-07 | 2021-04-30 | 珠海格力电器股份有限公司 | Motor rotor structure and motor |
-
2021
- 2021-01-07 CN CN202110019383.7A patent/CN112737169A/en active Pending
- 2021-10-18 WO PCT/CN2021/124319 patent/WO2022148085A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022148085A1 (en) * | 2021-01-07 | 2022-07-14 | 珠海格力电器股份有限公司 | Electric motor rotor structure and electric motor |
| CN113364174A (en) * | 2021-05-25 | 2021-09-07 | 浙江亚特电器有限公司 | Combined salient pole type motor rotor and motor |
| CN113489198A (en) * | 2021-08-03 | 2021-10-08 | 珠海格力电器股份有限公司 | Motor rotor, motor and air conditioner |
| CN113489198B (en) * | 2021-08-03 | 2022-07-26 | 珠海格力电器股份有限公司 | Motor rotor, motor and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022148085A1 (en) | 2022-07-14 |
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