CN216721043U - Rotor of stepping motor and stepping motor with same - Google Patents
Rotor of stepping motor and stepping motor with same Download PDFInfo
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- CN216721043U CN216721043U CN202122713134.6U CN202122713134U CN216721043U CN 216721043 U CN216721043 U CN 216721043U CN 202122713134 U CN202122713134 U CN 202122713134U CN 216721043 U CN216721043 U CN 216721043U
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Abstract
The utility model relates to a stepping motor rotor and a stepping motor with the rotor, wherein the stepping motor rotor comprises a rotor shaft, an outer rotor iron chip, an inner rotor iron chip, two pieces of magnetic steel and a circular ring elastomer assembly, the two pieces of magnetic steel are arranged between the two inner rotor iron chips, the circular ring elastomer assembly is positioned inside the magnetic steel and the inner rotor iron chip, and the outer rotor iron chip is provided with two pieces which are respectively attached to the inner rotor iron chips at corresponding positions. Compared with the prior art, the utility model has the advantages of improving the running stability of the motor and the like.
Description
Technical Field
The present disclosure relates to stepping motors, and particularly to a rotor of a stepping motor and a stepping motor having the rotor.
Background
The structure of the existing rotor assembly of the hybrid stepping motor is shown in fig. 1-5, and the existing rotor assembly is composed of a front existing rotor iron core piece 3 and a rear existing rotor iron core piece, an existing magnetic steel 4 between the two existing rotor iron core pieces and an existing rotor shaft 2, the front existing rotor iron core piece 3 and the rear existing rotor iron core piece 3 can deflect a certain angle in the radial direction, and the existing magnetic steel 4 is generally made of neodymium iron boron (NdFeB).
When the existing stepping motor operates, the motor rotor has radial and axial vibration, and the motor operation stability is poor. Therefore, how to absorb the radial and axial vibration energy of the motor rotor, the self vibration of the motor is reduced, the running stability of the motor is improved, and the technical problem to be solved is solved.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a rotor of a stepping motor and a stepping motor having the same, which overcome the above-mentioned drawbacks of the prior art.
The purpose of the utility model can be realized by the following technical scheme:
according to one aspect of the utility model, the stepping motor rotor comprises a rotor shaft, two outer rotor iron chips, two inner rotor iron chips, magnetic steel and a circular ring elastomer assembly, wherein the two inner rotor iron chips are provided with the two pieces of the magnetic steel which are arranged between the two inner rotor iron chips, the circular ring elastomer assembly is positioned inside the magnetic steel and the inner rotor iron chips, and the two outer rotor iron chips are provided with the two pieces of the magnetic steel which are respectively attached to the inner rotor iron chips at corresponding positions.
As a preferred technical scheme, the inner diameter of the inner rotor core plate is larger than that of the outer rotor core plate; the inner diameter of the magnetic steel is not less than that of the inner rotor iron core piece.
As the preferred technical scheme, the outer diameter of the circular ring elastomer assembly is respectively matched with the inner diameter of the magnetic steel or the inner rotor iron core piece, the inner diameter of the circular ring elastomer assembly is matched with the outer diameter of the rotor shaft, and the matching mode is interference fit or gluing.
As a preferred technical scheme, the circular ring elastic body assembly comprises a circular ring weight and an elastic body, and the elastic body wraps the circular ring weight and does not move relatively.
According to a preferable technical scheme, the circular ring elastic body assembly comprises a circular ring weight, a first outer elastic body and a first inner elastic body, the first outer elastic body is sleeved on the outer circle of the circular ring weight, the first inner elastic body is arranged on the inner circle of the circular ring weight, and the first outer elastic body and the first inner elastic body are connected with the circular ring weight in a matched mode in a gluing or interference mode.
According to a preferable technical scheme, the circular ring elastic body assembly comprises a circular ring weight, a second outer elastic body and a second inner elastic body, the second outer elastic body and the second inner elastic body are connected with the circular ring weight in a matched mode through gluing or interference, a plurality of first outer contact surfaces matched with the inner diameter of the magnetic steel or the inner rotor iron core piece are distributed on the outer surface of the second outer elastic body, a plurality of first inner contact surfaces matched with the outer diameter of the rotor shaft are distributed on the inner surface of the second inner elastic body, and the matching mode is interference fit or gluing through glue.
As a preferred technical solution, the circular ring elastic body assembly includes a circular ring weight, a third external elastic body and a third internal elastic body, both the third external elastic body and the third internal elastic body are connected with the circular ring weight in a fit manner by gluing or interference, the third external elastic body includes a plurality of second external contact surfaces which are uniformly distributed on the outer circular surface of the circular ring weight and are matched with the magnetic steel or the inner diameter of the inner rotor iron core plate, the third internal elastic body includes a plurality of second internal contact surfaces which are uniformly distributed on the inner circular surface of the circular ring weight and are matched with the outer diameter of the rotor shaft, wherein the fit manner is interference fit or gluing with glue.
As the preferred technical scheme, the circular ring heavy object is metal or nonmetal, and the elastomer is rubber or silica gel prepared by adopting a vulcanization process.
As a preferable technical scheme, one of the elastic bodies on the front end surface and the rear end surface of the circular ring elastic body assembly is bonded with the corresponding outer rotor iron core piece, or the front end surface and the rear end surface are all floating.
According to another aspect of the present invention, there is provided a stepping motor comprising a stator and said stepping motor rotor.
Compared with the prior art, the utility model has the following advantages:
at the inside ring elastomer subassembly that increases of rotor core, ring elastomer subassembly external diameter direction and iron core and magnet steel contact, internal diameter direction and pivot contact, front and back and rotor core contact (or increase the gasket), electric motor rotor is when rotating, on radial and axial vibrations can conduct the ring elastomer subassembly, ring elastomer subassembly is owing to have elasticity, radial and axial vibrations energy that can absorb electric motor rotor greatly, make the self vibrations of motor reduce, the stationarity of motor operation has been increased.
Drawings
Fig. 1 is a schematic perspective view of a conventional rotor assembly;
FIG. 2 is a schematic top view of a conventional rotor assembly;
FIG. 3 is a front view of a conventional rotor assembly;
FIG. 4 is a schematic sectional view A-A of FIG. 3;
FIG. 5 is an exploded view of a prior art rotor assembly;
fig. 6 is a schematic perspective view of a rotor assembly according to embodiment 1 of the present invention;
fig. 7 is a schematic top view of a rotor assembly according to embodiment 1 of the present invention;
fig. 8 is a front view schematically illustrating a rotor assembly according to embodiment 1 of the present invention;
FIG. 9 is a schematic sectional view A-A of FIG. 8;
fig. 10 is an exploded view of a rotor assembly according to embodiment 1 of the present invention;
FIG. 11 is an exploded view of the annular elastomeric member of example 1 of the present invention;
FIG. 12 is a schematic front view of an annular elastomer member according to example 1 of the present invention;
FIG. 13 is a schematic sectional view A-A of FIG. 12;
fig. 14 is a front view schematically illustrating a rotor assembly according to embodiment 2 of the present invention;
FIG. 15 is a schematic sectional view A-A of FIG. 14;
fig. 16 is an exploded view of a rotor assembly according to embodiment 2 of the present invention;
FIG. 17 is a schematic perspective view of an annular elastomer member according to example 2 of the present invention;
FIG. 18 is a schematic front view of an annular elastomer member according to example 2 of the present invention;
FIG. 19 is a schematic sectional view A-A of FIG. 18;
FIG. 20 is an exploded view of an annular elastomeric member according to example 3 of the present invention;
FIG. 21 is a schematic perspective view of an annular elastomeric member according to example 3 of the present invention;
FIG. 22 is a schematic front view of an annular elastomeric member according to example 3 of the present invention;
FIG. 23 is a schematic sectional view A-A of FIG. 22;
FIG. 24 is an exploded view of an annular elastomer element of example 4 of the present invention;
FIG. 25 is a schematic perspective view of an annular elastomeric member according to example 4 of the present invention;
FIG. 26 is a schematic front view of an annular elastomeric member according to example 4 of the present invention;
wherein 1 is the existing rotor core assembly, 2 is the existing rotor shaft, 3 is the existing rotor core assembly, 4 is the existing magnetic steel;
5 is the rotor assembly of the utility model, 6 is the rotor shaft, 7 is the outside rotor iron core sheet, 8 is the inside rotor iron core sheet, 9 is the magnet steel, 10 is the circular ring elastomer assembly, 11 is the circular ring heavy object, 12 is the elastomer;
14 is a first outer elastomer, 15 is a first inner elastomer;
17 is a second inner elastomer, 18 is a second outer elastomer, 19 is a first outer contact surface, 20 is a first inner contact surface;
a third outer elastomer 22, a third inner elastomer 23, a second outer contact surface 24 and a second inner contact surface 25.
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.
Example 1
As shown in fig. 5-10, a step motor rotor, including rotor shaft 6, outside rotor iron core piece 7, inboard rotor iron core piece 8, magnet steel 9 and ring elastomer subassembly 10, inboard rotor iron core piece 8 be equipped with two, 9 two places two of magnet steel in the middle of the inboard rotor iron core piece 8, ring elastomer subassembly 10 be located magnet steel 9 and inboard rotor iron core piece 8's inside, outside rotor iron core piece 7 be equipped with two, hug closely the inboard rotor iron core piece 8 of relevant position respectively.
The inner diameter of the inner rotor iron core plate 8 is larger than that of the outer rotor iron core plate 7. The inner rotor core sheet 8 is tightly attached to the outer rotor core sheet 7 in a laminating mode.
The inner diameter of the magnetic steel 9 is preferably designed to be the same as the inner diameter of the inner rotor iron core plate 8. The outer diameter of the circular ring elastomer assembly 10 is respectively matched with the inner diameters of the magnetic steel 9 and the inner rotor iron core piece 8; the inner diameter of the annular elastomer component 10 is matched with the outer diameter of the rotor shaft 6.
The circular ring elastic body assembly 10 comprises a circular ring weight 11 and an elastic body 12, wherein the elastic body 12 wraps the circular ring weight 11, and the circular ring weight 11 is located at the center of the circular ring elastic body assembly 10.
The circular heavy object 11 is made of metal, such as copper, iron and the like; the annular weight 11 can also be made of nonmetal, such as stone, cement and the like.
The elastomer 12 is rubber or silica gel. When the elastomer is rubber, the annular elastomer member 10 may be formed using a vulcanization process.
One of the elastic bodies on the front end face and the rear end face of the circular elastic body assembly 10 is bonded with the corresponding outer rotor core sheet 7, or the front end face and the rear end face are all floated.
The principle of the utility model is as follows:
increase ring elastomer subassembly 10 inside the rotor core, ring elastomer subassembly 10 external diameter direction and iron core and magnet steel 9 contact, internal diameter direction and rotor shaft 6 contact, front and back and rotor core contact (or increase the gasket), electric motor rotor is when rotating, on radial and axial vibrations can be conducted ring elastomer subassembly 10, ring elastomer subassembly 10 is owing to have elasticity, radial and axial vibrations energy that can the large absorption electric motor rotor, make the self vibrations of motor reduce, increase the stationarity of motor operation.
Example 2
As shown in fig. 14 to 19, the annular elastic body assembly 10 includes an annular weight 11, a first outer elastic body 14 and a first inner elastic body 15, wherein the first outer elastic body 14 is sleeved on the outer circle of the annular weight 11, and the first inner elastic body 15 is arranged on the inner circle of the annular weight 11;
wherein the annular weight 11 can be metal such as copper, iron, etc.; or non-metals such as stone, cement, etc.; the inner elastomer and the outer elastomer can be rubber, and can also be special silica gel and the like; the circular ring weight 11 and the inner and outer elastic bodies do not move relatively and can be adhered together by glue; when the elastomer is rubber, the annular elastomer member 10 may be formed using a vulcanization process.
The outer diameter of the circular ring elastic body assembly 10 is matched with the inner diameter of the stator core or the magnetic steel in an interference fit mode or is adhered together by glue; the inner diameter of the circular ring elastic body component 10 is matched with the outer diameter of the rotor shaft in an interference fit mode or a glue adhesion mode.
The front and rear surfaces of the annular elastic body component 10 can be respectively contacted with the front and rear outer rotor iron core sheets 7 or not. Spacers may be added between the front and rear faces of the annular elastomeric member 10 and the front and rear outer rotor laminations 7, respectively.
Example 3
As shown in fig. 20-23, the annular elastic body assembly 10 includes an annular weight 11, a second outer elastic body 18 and a second inner elastic body 17, wherein the outer surface of the second outer elastic body 18 is distributed with a plurality of first outer contact surfaces 19 (the number is practically selectable) matching with the inner diameter of the magnetic steel 9 or the inner rotor core piece 8, and the inner surface of the second inner elastic body 17 is distributed with a plurality of first inner contact surfaces 20 (the number is practically selectable) matching with the outer diameter of the rotor shaft 6, wherein the matching manner is interference fit or gluing.
The annular weight 11 and the inner and outer elastic bodies are not moved relatively and can be adhered together by glue.
Wherein the annular weight 11 can be metal such as copper, iron, etc.; or non-metals such as stone, cement, etc.; the inner elastomer and the outer elastomer can be rubber, and can also be special silica gel and the like; the circular ring weight 11 and the inner and outer elastic bodies do not move relatively and can be adhered together by glue; when the elastomer is rubber, the annular elastomer member 10 may be formed using a vulcanization process.
The front and rear surfaces of the annular elastic body component 10 can be respectively contacted with the front and rear outer rotor iron core sheets 7 or not. Spacers may be added between the front and rear faces of the annular elastomeric member 10 and the front and rear outer rotor laminations 7, respectively.
Example 4
As shown in fig. 24-26, the annular elastic member assembly 10 includes an annular weight 11, a third outer elastic member 22 and a third inner elastic member 23, wherein the third outer elastic member 22 includes a plurality of second outer contact surfaces 24 (the number is selectable) uniformly distributed on the outer circumferential surface of the annular weight 11 and matching with the inner diameter of the magnetic steel 9 or the inner rotor core piece 8, and the third inner elastic member 23 includes a plurality of second inner contact surfaces 25 (the number is selectable) uniformly distributed on the inner circumferential surface of the annular weight 11 and matching with the outer diameter of the rotor shaft 6, wherein the matching manner is interference fit or gluing.
The annular weight 11 and the inner and outer elastic bodies have no relative movement and can be glued together.
Wherein the annular weight 11 can be metal such as copper, iron, etc.; or non-metals such as stone, cement, etc.; the inner elastomer and the outer elastomer can be rubber, and can also be special silica gel and the like; the circular ring weight 11 and the inner and outer elastic bodies do not move relatively and can be adhered together by glue; when the elastomer is rubber, the annular elastomer member 10 may be formed using a vulcanization process.
The front and rear surfaces of the annular elastic body component 10 can be respectively contacted with the front and rear outer rotor iron core sheets 7 or not. Spacers may be added between the front and rear faces of the annular elastomeric member 10 and the front and rear outer rotor laminations 7, respectively.
While the utility model has been described with reference to specific embodiments, the utility model 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 utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a step motor rotor, its characterized in that includes rotor shaft (6), outside rotor iron core piece (7), inboard rotor iron core piece (8), magnet steel (9) and ring elastomer subassembly (10), inboard rotor iron core piece (8) be equipped with two, magnet steel (9) two arrange in two in the middle of inboard rotor iron core piece (8), ring elastomer subassembly (10) be located the inside of magnet steel (9) and inboard rotor iron core piece (8), outside rotor iron core piece (7) be equipped with two, hug closely corresponding position's inboard rotor iron core piece (8) respectively.
2. A stepping motor rotor according to claim 1, wherein the inner rotor core piece (8) has an inner diameter larger than the inner diameter of the outer rotor core piece (7); the inner diameter of the magnetic steel (9) is not less than that of the inner rotor iron core piece (8).
3. A rotor according to claim 1 or 2, wherein the outer diameter of the ring-shaped elastomer member (10) is matched with the inner diameter of the magnetic steel (9) or the inner rotor core piece (8), and the inner diameter of the ring-shaped elastomer member (10) is matched with the outer diameter of the rotor shaft (6), wherein the matching mode is interference fit or gluing with glue.
4. A rotor for a stepping motor according to claim 1, wherein said annular elastic member assembly (10) comprises an annular weight (11) and an elastic member (12), and said elastic member (12) is wrapped around said annular weight (11) without relative movement.
5. A rotor for a step motor according to claim 1, wherein said ring elastomer assembly (10) comprises a ring weight (11), a first outer elastomer (14) and a first inner elastomer (15), said first outer elastomer (14) is sleeved on the outer circle of the ring weight (11), said first inner elastomer (15) is arranged on the inner circle of the ring weight (11), and said first outer elastomer (14) and said first inner elastomer (15) are both connected with the ring weight (11) by gluing or interference fit.
6. A rotor according to claim 1, wherein the ring-shaped elastic member assembly (10) comprises a ring-shaped weight (11), a second outer elastic member (18) and a second inner elastic member (17), the second outer elastic member (18) and the second inner elastic member (17) are coupled to the ring-shaped weight (11) by gluing or interference fit, the outer surface of the second outer elastic member (18) is provided with a plurality of first outer contact surfaces (19) which are coupled to the inner diameter of the magnetic steel (9) or the inner rotor core piece (8), and the inner surface of the second inner elastic member (17) is provided with a plurality of first inner contact surfaces (20) which are coupled to the outer diameter of the rotor shaft (6), wherein the coupling is interference fit or gluing.
7. A stepping motor rotor according to claim 1, characterized in that said annular elastomer member (10) comprises an annular weight (11), a third outer elastomer (22) and a third inner elastomer (23), the third outer elastic body (22) and the third inner elastic body (23) are matched and connected with the circular ring weight (11) in a gluing or interference mode, the third external elastic body (22) comprises a plurality of second external contact surfaces (24) which are uniformly distributed on the outer circular surface of the circular heavy object (11) and are matched with the inner diameter of the magnetic steel (9) or the inner rotor iron core plate (8), the third inner elastic body (23) comprises a plurality of second inner contact surfaces (25) which are uniformly distributed on the inner circular surface of the circular ring weight (11) and are matched with the outer diameter of the rotor shaft (6), wherein the matching mode is interference fit or gluing.
8. A rotor for a stepping motor according to any of claims 4-7, wherein said annular weight (11) is metal or non-metal and said elastomer is rubber or silicone made by vulcanization.
9. The rotor of a stepping motor as claimed in claim 1, wherein one of the elastic bodies on the front and rear end faces of the circular ring elastic body assembly (10) is bonded with the corresponding outer rotor core piece (7), or the front and rear end faces are all floating.
10. A stepper motor comprising a stator and a stepper motor rotor as claimed in any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122713134.6U CN216721043U (en) | 2021-11-08 | 2021-11-08 | Rotor of stepping motor and stepping motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122713134.6U CN216721043U (en) | 2021-11-08 | 2021-11-08 | Rotor of stepping motor and stepping motor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216721043U true CN216721043U (en) | 2022-06-10 |
Family
ID=81878327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122713134.6U Active CN216721043U (en) | 2021-11-08 | 2021-11-08 | Rotor of stepping motor and stepping motor with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216721043U (en) |
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2021
- 2021-11-08 CN CN202122713134.6U patent/CN216721043U/en active Active
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