CN112713680A - Rotor structure and motor - Google Patents
Rotor structure and motor Download PDFInfo
- Publication number
- CN112713680A CN112713680A CN202011541624.6A CN202011541624A CN112713680A CN 112713680 A CN112713680 A CN 112713680A CN 202011541624 A CN202011541624 A CN 202011541624A CN 112713680 A CN112713680 A CN 112713680A
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- China
- Prior art keywords
- rotor
- rotor structure
- transition
- shaft section
- holes
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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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a rotor structure and a motor, wherein the rotor structure comprises: the rotating shaft comprises an iron core mounting shaft section and two transition shaft sections; the transition shaft section is provided with a transition surface, and the diameter of the transition surface is gradually increased along the direction close to the iron core installation shaft section; the rotor iron core is provided with a shaft hole and is sleeved on the iron core mounting shaft section; the two limiting pieces are provided with matching holes; the two limiting pieces are correspondingly arranged at two ends of the rotor core, and at least part of inner wall surfaces of the two matching holes are in one-to-one corresponding extrusion contact with the two transition surfaces; coupling assembling, two locating parts are all connected with rotor core through coupling assembling. The rotor structure solves the problem that the manufacturing cost of the rotor structure in the prior art is high.
Description
Technical Field
The invention relates to the field of motors, in particular to a rotor structure and a motor.
Background
The rotor structure is an indispensable structure in the motor, and generally consists of a relatively fixed rotating shaft and a rotor core.
In the prior art, a key groove or a ridge structure and the like are designed on a rotating shaft to realize connection between the rotating shaft and a rotor core, so that the relative rotation between the rotor structure and the rotating shaft is avoided. The rotor structure adopting the structural designs also needs to be matched with a shaft shoulder or interference fit and other modes to limit the rotor core, so that the circumferential movement of the rotor structure along the rotating shaft is avoided.
Therefore, the rotor structure in the prior art has the defects of complex structure, multiple processing procedures, high processing difficulty and the like, and the manufacturing cost of the rotor structure is high.
Disclosure of Invention
The invention mainly aims to provide a rotor structure and a motor, and aims to solve the problem that the manufacturing cost of the rotor structure in the prior art is high.
In order to achieve the above object, according to one aspect of the present invention, there is provided a rotor structure comprising: the rotating shaft comprises an iron core mounting shaft section and two transition shaft sections; the transition shaft section is provided with a transition surface, and the diameter of the transition surface is gradually increased along the direction close to the iron core installation shaft section; the rotor iron core is provided with a shaft hole and is sleeved on the iron core mounting shaft section; the two limiting pieces are provided with matching holes; the two limiting pieces are correspondingly arranged at two ends of the rotor core, and at least part of inner wall surfaces of the two matching holes are in one-to-one corresponding extrusion contact with the two transition surfaces; coupling assembling, two locating parts are all connected with rotor core through coupling assembling.
Further, the transition surface is a conical surface; the matching hole is a conical hole, and the shape of the inner wall surface of the conical hole is matched with that of the conical surface.
Further, the stopper includes: a plate body portion; and the sleeve part is connected with the plate body part, and the matching hole is arranged on the sleeve part.
Further, the limiting member further comprises a plurality of reinforcing portions, and each reinforcing portion is connected with the plate body portion and the sleeve portion; the plurality of reinforcing portions are provided at intervals in the circumferential direction of the sleeve portion.
Further, the roughness of the transition surface and the roughness of the inner wall surface of the fitting hole are both 1.6 μm or more.
Furthermore, the limiting piece is provided with a plurality of connecting holes which are arranged at intervals along the circumferential direction of the matching holes; the connecting assembly comprises a plurality of connecting pieces, and the connecting pieces are arranged in the connecting holes in a one-to-one correspondence mode.
Furthermore, the connecting holes on the two limiting pieces are arranged in a one-to-one correspondence manner; the connecting piece is a rivet which is arranged in the corresponding connecting holes on the two limiting parts in a penetrating way.
Furthermore, a plurality of avoiding holes are formed in the rotor core, and a plurality of rivets penetrate through the avoiding holes in a one-to-one correspondence mode.
Further, the rotor core is in clearance fit with the iron core mounting shaft section.
According to another aspect of the present invention, there is provided an electrical machine comprising a rotor structure and a stator structure disposed around the rotor structure, the rotor structure being as described above.
The rotor structure applying the technical scheme of the invention comprises: the rotating shaft comprises an iron core mounting shaft section and two transition shaft sections; the transition shaft section is provided with a transition surface, and the diameter of the transition surface is gradually increased along the direction close to the iron core installation shaft section; the rotor iron core is provided with a shaft hole and is sleeved on the iron core mounting shaft section; the two limiting pieces are provided with matching holes; the two limiting pieces are correspondingly arranged at two ends of the rotor core, and at least part of inner wall surfaces of the two matching holes are in one-to-one corresponding extrusion contact with the two transition surfaces; coupling assembling, two locating parts are all connected with rotor core through coupling assembling. When the rotor core is used, the two limiting pieces and the rotor core can be limited to move along the axial direction of the rotating shaft through the matching of the two limiting pieces and the conical surfaces of the two transition shaft sections; two locating parts are close to each other in the installation, can produce the extrusion with the conical surface to rely on the static friction between two locating parts and two transition shaft sections to avoid two locating parts and rotor core to revolve around the rotation of axes, realize the stable installation to rotor core. By adopting the structural design, structures such as key grooves and ridge positions do not need to be processed on the rotating shaft, so that the rotor structure is more simplified, the processing procedures are reduced, the processing difficulty is reduced, and the cost of the rotor structure can be reduced.
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 shows a schematic view of an embodiment of a rotor structure according to the invention;
FIG. 2 shows a cross-sectional structural schematic of an embodiment of a rotor structure according to the present invention;
FIG. 3 shows a structural schematic view from a first perspective of a rotor shaft of an embodiment of a rotor structure according to the present invention;
FIG. 4 is a structural schematic diagram illustrating a second perspective of a shaft of an embodiment of a rotor structure according to the present invention;
FIG. 5 illustrates a schematic view of a limiter of an embodiment of a rotor structure according to the present invention;
fig. 6 shows a cross-sectional structural view of a limiter of an embodiment of a rotor structure according to the invention.
Wherein the figures include the following reference numerals:
1. a rotating shaft; 11. installing a shaft section on the iron core; 12. a transition shaft section; 2. a rotor core; 3. a limiting member; 30. a mating hole; 31. a plate body portion; 32. a sleeve portion; 33. a reinforcing portion; 34. and connecting the holes.
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 6, the present invention provides a rotor structure, including: the rotary shaft comprises a rotary shaft 1, wherein the rotary shaft 1 comprises an iron core mounting shaft section 11 and two transition shaft sections 12; the transition shaft section 12 is provided with a transition surface, and the diameter of the transition surface is gradually increased along the direction close to the iron core mounting shaft section 11; the rotor iron core 2 is provided with a shaft hole, and the rotor iron core 2 is sleeved on the iron core mounting shaft section 11; two limiting pieces 3, and the two limiting pieces 3 are provided with matching holes 30; the two limiting pieces 3 are correspondingly arranged at two ends of the rotor core 2, and at least part of inner wall surfaces of the two matching holes 30 are in one-to-one corresponding extrusion contact with the two transition surfaces; coupling assembling, two locating parts 3 all are connected with rotor core 2 through coupling assembling.
The rotor structure of the present invention includes: the rotary shaft comprises a rotary shaft 1, wherein the rotary shaft 1 comprises an iron core mounting shaft section 11 and two transition shaft sections 12; the transition shaft section 12 is provided with a transition surface, and the diameter of the transition surface is gradually increased along the direction close to the iron core mounting shaft section 11; the rotor iron core 2 is provided with a shaft hole, and the rotor iron core 2 is sleeved on the iron core mounting shaft section 11; two limiting pieces 3, and the two limiting pieces 3 are provided with matching holes 30; the two limiting pieces 3 are correspondingly arranged at two ends of the rotor core 2, and at least part of inner wall surfaces of the two matching holes 30 are in one-to-one corresponding extrusion contact with the two transition surfaces; coupling assembling, two locating parts 3 all are connected with rotor core 2 through coupling assembling. When in use, the two limiting pieces 3 and the rotor core 2 can be limited to move along the axial direction of the rotating shaft 1 by matching the two limiting pieces 3 with the conical surfaces of the two transition shaft sections 12; two locating parts 3 are close to each other in the installation, can produce the extrusion with the conical surface to rely on the static friction between two locating parts 3 and two transition shaft sections 12 to avoid two locating parts 3 and rotor core 2 to revolve around axle 1 and rotate, realize the stable installation to rotor core 2. By adopting the structural design, structures such as key grooves and ridge positions do not need to be processed on the rotating shaft, so that the rotor structure is more simplified, the processing procedures are reduced, the processing difficulty is reduced, and the cost of the rotor structure can be reduced.
Specifically, the transition surface is a conical surface; the fitting hole 30 is a tapered hole, and the shape of the inner wall surface of the tapered hole matches the shape of the tapered surface.
Like this, after locating part 3 installed in place, the internal face of bell mouth can be with the conical surface extrusion contact of transition shaft section 12 to provide bigger area of contact, improve the stability of structure and provide bigger stiction, guarantee the reliability of rotor core 2 installation.
Specifically, the stopper 3 includes: the plate body portion 31; the sleeve portion 32 is connected to the plate portion 31, and the fitting hole 30 is provided in the sleeve portion 32. Thus, the overall thickness and weight of the limiting member 3 are effectively reduced on the basis of ensuring the matching effect of the limiting member 3 and the transition shaft section 12.
Specifically, the limiting member 3 further includes a plurality of reinforcing portions 33, each reinforcing portion 33 being connected to the plate body portion 31 and the sleeve portion 32; the plurality of reinforcing portions 33 are provided at intervals in the circumferential direction of the sleeve portion 32.
Specifically, the roughness of the transition surface and the roughness of the inner wall surface of the fitting hole 30 are each 1.6 μm or more.
That is, the roughness Ra of the transition surface is more than or equal to 1.6 μm, and the roughness Ra of the matching hole 30 is more than or equal to 1.6 μm; thus, the matching stability between the limiting part 3 and the transition shaft section 12 can be ensured, and the limiting part 3 and the rotor core 2 are prevented from rotating around the rotating shaft 1.
Specifically, the limiting member 3 is provided with a plurality of connecting holes 34, and the connecting holes 34 are arranged at intervals along the circumferential direction of the matching hole 30; the connecting assembly includes a plurality of connecting members, which are mounted in the plurality of connecting holes 34 in a one-to-one correspondence.
In particular implementations, the connectors may be of various configurations, such as screws, rivets, and the like.
Specifically, the connecting holes 34 on the two limiting members 3 are arranged in a one-to-one correspondence; the connecting pieces are rivets which are arranged in the corresponding connecting holes 34 on the two limiting pieces 3 in a penetrating way.
It can be understood that the rivet has a long length, and it penetrates through the two limiting members 3 and the rotor core 2, so as to connect the two limiting members 3 and the rotor core 2 into a whole, and apply a pulling force towards the rotor core 2 to the two limiting members 3, thereby achieving a matching effect between the two limiting members 3 and the transition shaft segment 12.
Specifically, the rotor core 2 is provided with a plurality of avoiding holes, and a plurality of rivets are arranged in the avoiding holes in a penetrating manner in a one-to-one correspondence manner. Thereby can avoid rotor core 2 to the influence of rivet, and the rivet is worn to establish and is dodged downthehole can further improve the fixed effect to rotor core 2.
Specifically, rotor core 2 is clearance-fitted with core mounting shaft segment 11. Like this, do not need rotor core 2 and pivot 1 to cooperate with each other minutely, can further reduce the processing degree of difficulty when guaranteeing rotor structural stability.
In addition, the invention also provides a motor, which comprises a rotor structure and a stator structure arranged around the rotor structure, wherein the rotor structure is the 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 rotor structure of the present invention includes: the rotary shaft comprises a rotary shaft 1, wherein the rotary shaft 1 comprises an iron core mounting shaft section 11 and two transition shaft sections 12; the transition shaft section 12 is provided with a transition surface, and the diameter of the transition surface is gradually increased along the direction close to the iron core mounting shaft section 11; the rotor iron core 2 is provided with a shaft hole, and the rotor iron core 2 is sleeved on the iron core mounting shaft section 11; two limiting pieces 3, and the two limiting pieces 3 are provided with matching holes 30; the two limiting pieces 3 are correspondingly arranged at two ends of the rotor core 2, and at least part of inner wall surfaces of the two matching holes 30 are in one-to-one corresponding extrusion contact with the two transition surfaces; coupling assembling, two locating parts 3 all are connected with rotor core 2 through coupling assembling. When in use, the two limiting pieces 3 and the rotor core 2 can be limited to move along the axial direction of the rotating shaft 1 by matching the two limiting pieces 3 with the conical surfaces of the two transition shaft sections 12; two locating parts 3 are close to each other in the installation, can produce the extrusion with the conical surface to rely on the static friction between two locating parts 3 and two transition shaft sections 12 to avoid two locating parts 3 and rotor core 2 to revolve around axle 1 and rotate, realize the stable installation to rotor core 2. By adopting the structural design, structures such as key grooves and ridge positions do not need to be processed on the rotating shaft, so that the rotor structure is more simplified, the processing procedures are reduced, the processing difficulty is reduced, and the cost of the rotor structure can be reduced.
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 (10)
1. A rotor structure, comprising:
the rotating shaft (1), the said rotating shaft (1) includes the iron core installs the shaft section (11) and two transition shaft sections (12); the transition shaft section (12) is provided with a transition surface, and the diameter of the transition surface is gradually increased along the direction close to the iron core mounting shaft section (11);
the rotor comprises a rotor core (2), wherein a shaft hole is formed in the rotor core (2), and the rotor core (2) is sleeved on the iron core mounting shaft section (11);
the two limiting pieces (3), the two limiting pieces (3) are provided with matching holes (30); the two limiting pieces (3) are correspondingly arranged at two ends of the rotor core (2), and at least part of inner wall surfaces of the two matching holes (30) are in one-to-one corresponding extrusion contact with the two transition surfaces;
and the limiting parts (3) are connected with the rotor core (2) through the connecting assemblies.
2. The rotor structure of claim 1, wherein the transition surface is a conical surface; the matching hole (30) is a conical hole, and the shape of the inner wall surface of the conical hole is matched with that of the conical surface.
3. The rotor structure according to claim 1, characterized in that the retaining member (3) comprises:
a plate body portion (31);
a sleeve portion (32) connected to the plate portion (31), the fitting hole (30) being provided in the sleeve portion (32).
4. A rotor structure according to claim 3, wherein the retainer (3) further comprises a plurality of reinforcing portions (33), each of the reinforcing portions (33) being connected to the plate body portion (31) and the sleeve portion (32); the plurality of reinforcement portions (33) are provided at intervals in the circumferential direction of the sleeve portion (32).
5. The rotor structure according to claim 1, characterized in that the roughness of the transition surface and the roughness of the inner wall surface of the fitting hole (30) are each greater than or equal to 1.6 μm.
6. The rotor structure according to claim 1, wherein a plurality of connecting holes (34) are formed in the retaining member (3), and the plurality of connecting holes (34) are arranged at intervals along the circumferential direction of the matching hole (30); the connecting assembly comprises a plurality of connecting pieces, and the connecting pieces are arranged in the connecting holes (34) in a one-to-one correspondence mode.
7. The rotor structure according to claim 6, characterized in that the connecting holes (34) of the two retaining members (3) are arranged in a one-to-one correspondence; the connecting piece is a rivet, and the rivet is arranged in the corresponding connecting holes (34) in the two limiting pieces (3) in a penetrating mode.
8. The rotor structure according to claim 7, wherein a plurality of avoiding holes are formed in the rotor core (2), and a plurality of rivets are arranged in the plurality of avoiding holes in a one-to-one correspondence manner.
9. A rotor structure according to claim 1, characterized in that the rotor core (2) is clearance fitted with the core mounting shaft section (11).
10. An electrical machine comprising a rotor structure and a stator structure arranged around the rotor structure, the rotor structure being as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011541624.6A CN112713680A (en) | 2020-12-23 | 2020-12-23 | Rotor structure and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011541624.6A CN112713680A (en) | 2020-12-23 | 2020-12-23 | Rotor structure and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112713680A true CN112713680A (en) | 2021-04-27 |
Family
ID=75543755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011541624.6A Pending CN112713680A (en) | 2020-12-23 | 2020-12-23 | Rotor structure and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112713680A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105264746A (en) * | 2013-06-19 | 2016-01-20 | 特斯拉汽车公司 | Controlling end ring balance in pre-balancing spinning process |
| CN206790241U (en) * | 2017-06-07 | 2017-12-22 | 常州奥立思特电气股份有限公司 | A kind of new brushless DC motor rotor mounting structure |
| CN108138649A (en) * | 2015-10-02 | 2018-06-08 | 株式会社Ihi | Electric booster |
| CN210074984U (en) * | 2019-08-07 | 2020-02-14 | 重庆市浩帆机械有限公司 | Generator rotor shaft |
| CN210395335U (en) * | 2019-03-29 | 2020-04-24 | 华侨大学 | Expansion shell bearing plate and anchor rod adopting same |
| CN210640755U (en) * | 2019-11-25 | 2020-05-29 | 江苏朗信电气有限公司 | Rotor assembly of brushless motor |
| 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
- 2020-12-23 CN CN202011541624.6A patent/CN112713680A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105264746A (en) * | 2013-06-19 | 2016-01-20 | 特斯拉汽车公司 | Controlling end ring balance in pre-balancing spinning process |
| CN108138649A (en) * | 2015-10-02 | 2018-06-08 | 株式会社Ihi | Electric booster |
| CN206790241U (en) * | 2017-06-07 | 2017-12-22 | 常州奥立思特电气股份有限公司 | A kind of new brushless DC motor rotor mounting structure |
| CN210395335U (en) * | 2019-03-29 | 2020-04-24 | 华侨大学 | Expansion shell bearing plate and anchor rod adopting same |
| CN210074984U (en) * | 2019-08-07 | 2020-02-14 | 重庆市浩帆机械有限公司 | Generator rotor shaft |
| CN210640755U (en) * | 2019-11-25 | 2020-05-29 | 江苏朗信电气有限公司 | Rotor assembly of brushless motor |
| CN211606212U (en) * | 2020-03-18 | 2020-09-29 | 合普动力股份有限公司 | Fast assembly's electric motor rotor |
Non-Patent Citations (1)
| Title |
|---|
| 易柳峰: "膜片联轴器锥面无键联接的有限元分析", 《机械传动》 * |
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Application publication date: 20210427 |
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| RJ01 | Rejection of invention patent application after publication |