CN114337029A - Rotor of stepping motor - Google Patents
Rotor of stepping motor Download PDFInfo
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- CN114337029A CN114337029A CN202210100639.1A CN202210100639A CN114337029A CN 114337029 A CN114337029 A CN 114337029A CN 202210100639 A CN202210100639 A CN 202210100639A CN 114337029 A CN114337029 A CN 114337029A
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- rotor
- cover plate
- rotor core
- core
- stepping motor
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Abstract
The invention relates to a stepping motor rotor, which comprises a rotating shaft, magnetic steel, a front rotor iron core component and a rear rotor iron core component, wherein the rotating shaft sequentially penetrates through the front rotor iron core component, the magnetic steel and the rear rotor iron core component; the rear rotor core assembly comprises a second rear rotor core, a rear elastic body assembly and a rear cover plate, wherein the rear elastic body assembly is placed in a cavity of the second rear rotor core and is packaged through the rear cover plate. Compared with the prior art, the invention has the advantages of greatly reducing the production difficulty of the vibration reduction rotor core, reducing the production and manufacturing cost of the motor and the like.
Description
Technical Field
The invention relates to a motor, in particular to a rotor of a stepping motor.
Background
As shown in fig. 1-3, a motor rotor 1 according to the first prior art includes a first front rotor core 3, a first rear rotor core 4, a magnetic steel 5 located in the middle of the rotor cores, and a rotating shaft 2 penetrating through the rotor cores and the magnetic steel, where the first front rotor core 3 and the first rear rotor core 4 are formed by pressing the same rotor punching sheets , and the first front rotor core 3 and the first rear rotor core 4 are radially staggered by a certain angle.
As shown in fig. 4-6, the motor rotor 6 of the second conventional solution includes a second front rotor core 7, a second rear rotor core 8, a magnetic steel 5 located in the middle of the rotor cores, and a rotating shaft 2 penetrating through the rotor cores and the magnetic steel, where the second front rotor core 7 and the second rear rotor core 8 are formed by pressing rotor punching sheets with different inner diameters, the rotor punching sheet with a smaller inner diameter is tightly attached to the magnetic steel, and the second front rotor core 7 and the second rear rotor core 8 are radially staggered by a certain angle.
However, the conventional rotor core has a solid or open structure, and thus, any component cannot be placed inside the rotor core, which results in a reduction in performance of the motor.
Disclosure of Invention
The present invention is directed to a rotor for a stepping motor, which overcomes the above-mentioned drawbacks of the prior art.
The purpose of the invention can be realized by the following technical scheme:
according to one aspect of the invention, a stepping motor rotor is provided, which comprises a rotating shaft, magnetic steel, a front rotor iron core component and a rear rotor iron core component, wherein the rotating shaft sequentially penetrates through the front rotor iron core component, the magnetic steel and the rear rotor iron core component;
the rear rotor core assembly comprises a second rear rotor core, a rear elastic body assembly and a rear cover plate, wherein the rear elastic body assembly is placed in a cavity of the second rear rotor core and is packaged through the rear cover plate.
As an optimal technical scheme, the second front rotor core and the second rear rotor core are rotor cores formed by laminating two rotor punching sheets with different inner diameters.
As a preferable technical scheme, the front elastic body assembly comprises a front circular ring weight and a front elastic body, and the front circular ring weight is placed in the front elastic body.
As a preferred technical solution, the rear elastic body assembly includes a rear circular ring weight and a rear elastic body, and the rear circular ring weight is disposed in the rear elastic body.
As an optimal technical scheme, the magnetic steel is positioned between the second front rotor core and the second rear rotor core and is tightly attached to the rotor punching sheet on the side with the smaller inner diameter.
As a preferred technical scheme, the front cover plate and the rear cover plate are provided with cover plate outer bosses, cover plate outer side edges and cover plate inner bosses.
As an optimized technical scheme, the second front rotor core and the second rear rotor core are provided with rotor core large inner holes corresponding to the cover plate outer bosses, and the outer circumferences of the rotor core large inner holes are in interference fit with the cover plate outer bosses.
As a preferred technical scheme, the second front rotor core and the second rear rotor core are provided with rotor core end faces which are in contact fit with the outer side edge of the cover plate in the axial direction.
As a preferable technical scheme, the inner boss of the cover plate is in interference fit or clearance fit with the rotating shaft on the circumference.
As a preferable technical scheme, the front cover plate and the rear cover plate are both made of copper, iron or aluminum materials.
Compared with the prior art, the invention has the following advantages:
1) according to the invention, a cover plate packaging mode is adopted, and the annular elastic body assembly is added in the rotor core, so that the rotor core with the elastic body inside becomes a part which can be directly assembled, the production difficulty of the vibration reduction rotor core is greatly reduced, and the production and manufacturing cost of the motor is reduced;
2) the invention adopts a cover plate interference packaging mode to further prevent the front and rear elastic body assemblies of the motor from being separated from the front and rear rotor iron core assemblies, thereby improving the performance of the motor.
Drawings
Fig. 1 is a schematic perspective view of a first rotor of a conventional hybrid stepping motor;
FIG. 2 is a schematic front view of a first conventional rotor of a hybrid stepping motor;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic perspective view of a rotor of a conventional hybrid stepping motor according to a second embodiment;
FIG. 5 is a schematic front view of a rotor of a conventional hybrid stepping motor;
FIG. 6 is a sectional view taken along line B-B of FIG. 5;
FIG. 7 is a schematic perspective view of a rotor of a stepping motor according to the present invention;
FIG. 8 is a schematic front view of a rotor of a stepping motor according to the present invention;
FIG. 9 is a cross-sectional view taken along line C-C of FIG. 8;
FIG. 10 is an exploded view of a rotor of a stepper motor according to the present invention;
FIG. 11 is a schematic structural view of a rotor core according to the present invention;
FIG. 12 is a schematic view of the cover plate according to the present invention;
wherein 1 is the motor rotor of the first scheme, 2 is the rotating shaft, 3 is the first front rotor core, 4 is the first rear rotor core, 5 is the magnetic steel, 6 is the motor rotor of the second scheme, 7 is the second front rotor core, and 8 is the second rear rotor core;
the motor rotor comprises a motor rotor 9, a front elastic body 10, a front ring weight 11, a rear elastic body 12, a rear ring weight 13, a front cover plate 14, a rear cover plate 15, a front elastic body assembly 16, a rear elastic body assembly 17, a front rotor iron core assembly 18, a rear rotor iron core assembly 19, a rotor iron core large inner hole 20, a cover plate outer boss 21, a cover plate outer side 22, a cover plate inner boss 23 and a rotor iron core end face 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
As shown in fig. 7-10, a rotor of a stepping motor includes a rotating shaft 2, a magnetic steel 5, a front rotor core assembly 18 and a rear rotor core assembly 19, the front rotor core assembly 18 and the rear rotor core assembly 19 are radially staggered by a certain angle, the rotating shaft 2 sequentially penetrates through the front rotor core assembly 18, the magnetic steel 5 and the rear rotor core assembly 19, the front rotor core assembly 18 includes a second front rotor core 7, a front elastic body assembly 16 and a front cover plate 14, and the front elastic body assembly 16 is placed in a cavity of the second front rotor core 7 and is encapsulated by the front cover plate 14; the rear rotor core assembly 19 comprises a second rear rotor core 8, a rear elastic body assembly 17 and a rear cover plate 15, wherein the rear elastic body assembly 17 is placed in a cavity of the second rear rotor core 8 and is packaged through the rear cover plate 15.
And the second front rotor core 7 and the second rear rotor core 8 are rotor cores formed by laminating two rotor punching sheets with different inner diameters. And the magnetic steel 5 is positioned between the second front rotor core 7 and the second rear rotor core 8 and is tightly attached to the rotor punching sheet on the side with the smaller inner diameter. Thereby improving motor reliability.
The front elastic body assembly 16 comprises a front circular ring weight 11 and a front elastic body 10, wherein the front circular ring weight 11 is arranged in the front elastic body 10. The rear elastic body assembly 17 comprises a rear circular ring weight 13 and a rear elastic body 12, and the rear circular ring weight 13 is arranged in the rear elastic body 12.
As shown in fig. 11-12, the front cover plate 14 and the rear cover plate 15 are provided with a cover plate outer boss 21, a cover plate outer side 22 and a cover plate inner boss 23.
The second front rotor core 7 and the second rear rotor core 8 are provided with rotor core large inner holes 20 corresponding to the cover plate outer bosses 21, and the rotor core large inner holes 20 are in interference fit with the cover plate outer bosses 21 on the outer circumference. The second front rotor core 7 and the second rear rotor core 8 are provided with rotor core end faces 24 which are in contact fit with the cover plate outer side edges 22 in the axial direction. The cover plate inner boss 23 is in interference fit or clearance fit with the rotating shaft 2 on the circumference.
The front cover plate 14 and the rear cover plate 15 are both made of copper, iron or aluminum materials. The reliability of the motor is further improved.
The use of front shroud 14 and back shroud 15 be rotor core subassembly around deviating from in order to prevent the front and back elastomer subassembly of motor for the inside rotor core that has the elastomer becomes a part that can directly assemble, has greatly reduced the production degree of difficulty of damping rotor core, has reduced the manufacturing cost of motor.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A stepping motor rotor comprises a rotating shaft (2), magnetic steel (5), a front rotor iron core assembly (18) and a rear rotor iron core assembly (19), wherein the rotating shaft (2) sequentially penetrates through the front rotor iron core assembly (18), the magnetic steel (5) and the rear rotor iron core assembly (19), and is characterized in that the front rotor iron core assembly (18) comprises a second front rotor iron core (7), a front elastic body assembly (16) and a front cover plate (14), and the front elastic body assembly (16) is placed in a cavity of the second front rotor iron core (7) and is packaged through the front cover plate (14);
back rotor core subassembly (19) include rotor core (8), back elastomer subassembly (17) and back shroud (15) behind the second, the cavity of rotor core (8) behind the second is put into in back elastomer subassembly (17) to encapsulate through back shroud (15).
2. The rotor of a stepping motor according to claim 1, wherein the second front rotor core (7) and the second rear rotor core (8) are rotor cores formed by laminating two kinds of rotor sheets with different inner diameters.
3. A stepping motor rotor according to claim 1, characterized in that said front elastomer member (16) comprises a front ring weight (11) and a front elastomer (10), said front ring weight (11) being placed in the front elastomer (10).
4. A stepping motor rotor according to claim 1, characterized in that said rear elastic body assembly (17) comprises a rear circular ring weight (13) and a rear elastic body (12), said rear circular ring weight (13) being disposed in the rear elastic body (12).
5. A rotor for a stepping motor according to claim 1, wherein said magnetic steel (5) is located between the second front rotor core (7) and the second rear rotor core (8) and is closely attached to the rotor lamination on the side with smaller inner diameter.
6. A rotor for a stepping motor according to claim 1, wherein said front cover plate (14) and said rear cover plate (15) are provided with cover plate outer protrusions (21), cover plate outer edges (22) and cover plate inner protrusions (23).
7. A rotor for a stepping motor according to claim 6, wherein said second front rotor core (7) and said second rear rotor core (8) are provided with rotor core large inner holes (20) corresponding to said cover plate outer bosses (21), said rotor core large inner holes (20) being interference-fitted with said cover plate outer bosses (21) on the outer circumference.
8. A rotor for a stepping motor according to claim 6, wherein said second front rotor core (7) and said second rear rotor core (8) are provided with rotor core end faces (24) which are in contact engagement with said cover outer side edges (22) in the axial direction.
9. A rotor according to claim 6, characterised in that the boss (23) in the cover plate is a circumferential interference or clearance fit with the shaft (2).
10. A rotor for a stepping motor according to claim 1, wherein said front cover plate (14) and said rear cover plate (15) are made of copper, iron or aluminum material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210100639.1A CN114337029A (en) | 2022-01-27 | 2022-01-27 | Rotor of stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210100639.1A CN114337029A (en) | 2022-01-27 | 2022-01-27 | Rotor of stepping motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114337029A true CN114337029A (en) | 2022-04-12 |
Family
ID=81031450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210100639.1A Pending CN114337029A (en) | 2022-01-27 | 2022-01-27 | Rotor of stepping motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114337029A (en) |
-
2022
- 2022-01-27 CN CN202210100639.1A patent/CN114337029A/en active Pending
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