CN213402668U - High-impact-resistant motor - Google Patents
High-impact-resistant motor Download PDFInfo
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- CN213402668U CN213402668U CN202022257415.0U CN202022257415U CN213402668U CN 213402668 U CN213402668 U CN 213402668U CN 202022257415 U CN202022257415 U CN 202022257415U CN 213402668 U CN213402668 U CN 213402668U
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- rotor
- sleeve
- high impact
- bearing
- soft magnetic
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Abstract
The utility model relates to the technical field of electric machines, a high impact resistance motor is provided. The high impact resistant motor provided by the embodiment of the utility model supports the front end of the rotor through the front end cover, supports the rear end of the rotor through the rear end cover, enables the front end cover to be rotationally connected with the rotor through the front bearing, enables the rear end cover to be rotationally connected with the rotor through the rear bearing, and buffers the rotor through the elastic cushion; the rotor is packaged into an integral structure through the shaft, the soft magnetic sleeve, the magnetic steel and the stainless steel sleeve which are sleeved and packaged from inside to outside, so that the integral strength of the rotor is improved by multiple times, the rotor meets the impact requirement of an axial ultrahigh g value and also meets the requirement of radial high-impact vibration resistance.
Description
Technical Field
The utility model relates to the technical field of electric machines, specifically relate to an anti high impact motor.
Background
At present, in the aspect of miniature special motors, particularly in the field of coreless motors (the diameter of the motor is less than 32mm), most of the miniature special motors are imported motors, but in the field of high-impact acceleration miniature motors with tens of thousands of g values for missile-borne steering engines, the imported motors are limited and cannot meet high impact requirements.
Disclosure of Invention
An embodiment of the utility model provides an anti high impact motor can make the motor resist the high impact. The specific technical scheme is as follows:
the high impact resistant motor comprises a front end cover, a rear end cover and a rotor, wherein a front bearing is installed in the front end cover, and a rear bearing is installed in the rear end cover; the rotor comprises a soft magnetic sleeve, magnetic steel, a stainless steel sleeve and a shaft, wherein the soft magnetic sleeve is sleeved on the periphery of the shaft, the magnetic steel sleeve is sleeved on the periphery of the soft magnetic sleeve, and the stainless steel sleeve is sleeved outside the magnetic steel; the front end of the shaft of the rotor is rotationally connected with the front bearing, the rear end of the shaft of the rotor is rotationally connected with the rear bearing, and an elastic cushion is extruded between the rotor and the rear bearing.
Further, the front bearing is a split bearing formed by splicing three lobes.
Furthermore, the longitudinal half sections of the front bearing and the rear bearing are both C-shaped structures.
Furthermore, the periphery of the front end cover is provided with lugs extending outwards, and mounting holes are formed in the lugs.
Furthermore, the elastic cushion is of an annular wave-shaped structure and is sleeved on a shaft of the rotor.
Furthermore, the ends of the soft magnetic sleeve, the magnetic steel and the stainless steel sleeve are fixedly connected through solidified resin.
Furthermore, the shaft limiting device further comprises a limiting sleeve, wherein the limiting sleeve is sleeved on the periphery of the shaft, and the end part of the soft magnetic sleeve is tightly attached to the limiting sleeve.
Furthermore, the limiting sleeve, the magnetic steel and the stainless steel sleeve are fixedly connected through cured resin.
Furthermore, the position limiting sleeve comprises a front position limiting sleeve and a rear position limiting sleeve, and the soft magnetic sleeve is positioned between the front position limiting sleeve and the rear position limiting sleeve.
Furthermore, the periphery of the soft magnetic sleeve is provided with a limit groove which is axially communicated, the inner periphery of the magnetic steel is provided with a limit bulge matched with the limit groove, and when the magnetic steel is sleeved with the soft magnetic sleeve, the limit groove is embedded with the limit bulge.
The high impact resistant motor provided by the embodiment of the utility model supports the front end of the rotor through the front end cover, supports the rear end of the rotor through the rear end cover, enables the front end cover to be rotationally connected with the rotor through the front bearing, enables the rear end cover to be rotationally connected with the rotor through the rear bearing, and buffers the rotor through the elastic cushion; the rotor is packaged into an integral structure through the shaft, the soft magnetic sleeve, the magnetic steel and the stainless steel sleeve which are sleeved and packaged from inside to outside, so that the integral strength of the rotor is improved by multiple times, the rotor meets the impact requirement of an axial ultrahigh g value and also meets the requirement of radial high-impact vibration resistance.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of an anti-high impact motor according to an embodiment of the present invention.
Fig. 2 is a schematic view of a front bearing structure of an anti-high impact motor according to an embodiment of the present invention.
Fig. 3 is a schematic view of an electric motor rotor of the high impact resistance electric motor according to the embodiment of the present invention.
Wherein, 1, a front end cover; 11. a tab; 12. a front bearing; 2. a housing; 3. a stator; 4. a rotor; 41. a soft magnetic sleeve; 42. Magnetic steel; 43. a stainless steel sleeve; 44. a resin; 45. a limiting sleeve; 46. a shaft; 5. a rear end cap; 6. an elastic pad.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The terms "first" or "second", etc. are used merely to distinguish the same type of component or device, and do not represent limitations.
As shown in fig. 1-3, the high impact resistant motor of the embodiment of the present invention includes a front end cover 1, a rear end cover 5 and a rotor 4, wherein the front end cover 1 is provided with a front bearing 12, and the rear end cover 5 is provided with a rear bearing; the rotor 4 comprises a soft magnetic sleeve 41, magnetic steel 42, a stainless steel sleeve 43 and a shaft 46, wherein the soft magnetic sleeve 41 is sleeved on the periphery of the shaft 46, the magnetic steel 42 is sleeved on the periphery of the soft magnetic sleeve 41, and the stainless steel sleeve 43 is sleeved outside the magnetic steel 42; the front end of the shaft of the rotor 4 is rotationally connected with the front bearing 12, the rear end of the shaft of the rotor 4 is rotationally connected with the rear bearing, and the elastic pad 6 is extruded between the rotor 4 and the rear bearing.
Wherein, the front bearing 12 is a split bearing with three split joints.
Wherein, the longitudinal section of the front bearing 12 is a C-shaped structure.
Wherein, the periphery of the front end cover 1 is provided with a lug 11 extending outwards, and the lug 11 is provided with a mounting hole.
Wherein, the elastic pad 6 is a ring-shaped wave structure, and the elastic pad 6 is sleeved on the shaft of the rotor 4.
The motor further comprises a machine shell 2 and a stator 3, wherein the stator 3 is fixed on the inner periphery of the machine shell 2 through cured resin; the front end cover 1 and the rear end cover 5 are respectively fixedly connected to the front end and the rear end of the machine shell 2, and the rotor 4 is positioned on the inner side of the stator 3.
Wherein, the stator 3 comprises a silicon steel sheet and a winding which are fixedly connected with each other, and the winding is of a hollow cup structure
The elastic pad 6 is used for buffering the rotor 4, and when the rotor 4 is subjected to high-impact vibration in the axial direction, the elastic pad 6 can absorb the vibration of the rotor, so that the vibration of the rotor is weakened, and the rotor can withstand the high-impact in the axial direction; the wave-shaped structure of the elastic cushion 6 improves the buffer and shock absorption effects on the rotor; the elastic pad 6 may be made of 60Si2MnA material.
When the rear bearing is different from the front bearing, the rear bearing adopts an integrated structure and is used for being matched with the elastic cushion; the same as the front bearing, the longitudinal section of the front bearing adopts a C-shaped structure, and the C-shaped structure can ensure that the front bearing and the rear bearing are more stably installed and can prevent the front bearing and the rear bearing from being damaged by impact.
The front end cover and the front bearing are used for being connected with an external steering engine mechanism; the front bearing can be made of a high-wear-resistance material ZCuSn10Pb1 and can meet the requirement of impact resistance, the front bearing is different from the traditional bearing in structural design, a split structure is adopted and consists of a three-lobe C-shaped structural part, the structural design enables the bearing to resist large vibration impact caused by a rotor while supporting the rotor to rotate, the rotation cannot be failed, and clamping stagnation or scattering possibly generated when the traditional bearing is subjected to axial high-impact vibration is prevented.
The structural design of the front end cover 1 is different from that of a common micro motor, three thickened lug plates 11 extend outwards from a circular flange of the front end cover 1, the lug plates 11 are used for being connected with an external steering engine mechanism, when the motor is subjected to high impact, the impact caused by the self weight of the motor is borne through the lug plates 11, and the structure and the strength of the front end cover are superior to those of a traditional front end cover flange.
The stator 3 comprises silicon steel sheets and windings, the windings are installed together with the laminated silicon steel sheets by adopting a hollow cup structure, the laminated silicon steel sheets and the windings are placed in the shell 2 after being formed, the laminated silicon steel sheets and the windings are pre-fixed together by adopting a tool, liquid resin is injected through a vacuum process, and the silicon steel sheets, the windings and the shell are fixed into a whole through resin curing treatment; the solidified resin has certain hardness and strength, so that when the stator is subjected to high impact, the problem of cracking and the like cannot be caused inside the stator, the motor winding can be effectively protected, the motor winding is prevented from being damaged by impact, and the motor is prevented from working failure.
Wherein, the fixed connection between the shell and the front end cover or the rear end cover is welding. Because the motor is small (the diameter of the motor is less than 32mm), the impact requirement can not be met by adopting screw connection.
Wherein, the ends of the soft magnetic sleeve 41, the magnetic steel 42 and the stainless steel sleeve 43 are fixedly connected by the solidified resin 44.
In one embodiment, the rotor further comprises a limiting sleeve 45, the limiting sleeve 45 is sleeved on the periphery of the shaft 46, and the limiting sleeve 45 is tightly attached to the end portion of the soft magnetic sleeve 3.
In one embodiment, the stop collar 45, the magnetic steel 42 and the stainless steel sleeve 43 are fixedly connected by a cured resin 44.
In one embodiment, the stop collar 45 includes a front stop collar and a rear stop collar, with the soft magnetic sleeve 41 positioned between the front stop collar and the rear stop collar.
In one embodiment, the outer periphery of the soft magnetic sleeve 41 is provided with an axially through limiting groove, the inner periphery of the magnetic steel 42 is provided with a limiting protrusion matched with the limiting groove, and when the magnetic steel 42 is sleeved with the soft magnetic sleeve 41, the limiting groove and the limiting protrusion are embedded and connected with each other.
The rotor adopts a fully-closed design structure, the magnetic steel 42 is embedded into the soft magnetic sleeve 41, the magnetic steel 42 is sleeved with the stainless steel sleeve 43, the ends of the soft magnetic sleeve 41, the magnetic steel 42 and the stainless steel sleeve 43 can be limited and fixed through solidified resin, and the end displacement of the soft magnetic sleeve 41, the magnetic steel 42 and the stainless steel sleeve 43 is prevented when the rotor is impacted axially; the end part of the soft magnet 41 can be limited by the limiting sleeve 45, and when the soft magnet is impacted axially, the soft magnet sleeve 41 is prevented from displacing along the shaft 46; through setting up spacing groove and spacing arch for the inner periphery of magnet steel 42 can imbed the periphery of soft magnetic sleeve 41, makes and locks between soft magnetic sleeve 41 and the magnet steel 42, when making rotor 4 rotatory, prevents that global between soft magnetic sleeve 41 and the magnet steel 42 from sliding.
The solidified resin 44 has certain hardness and strength, and can resist the vibration of the rotor due to high impact, so that the rotor can be firmly connected with the soft magnetic sleeve 41, the magnetic steel 42, the stainless steel sleeve 43 and other components when being subjected to high impact, the components are stably packaged, and the components are prevented from being scattered due to vibration.
The motor rotor of the embodiment fixes all the parts due to the integrated structure after being packaged, so that the integrated strength of the motor rotor is improved by multiple times, and the rotor meets the impact requirement of an axial ultrahigh g value and the requirement of radial high-impact vibration resistance
It should be understood that the mounting between the structures in the embodiments of the present invention may refer to welding, bolting, screwing, scarf joining, and bonding; the connection between the pipes may be referred to as communication; the connection between the appliances may refer to an electrical connection. The present invention is not limited to the precise arrangements described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (10)
1. The high-impact-resistance motor is characterized by comprising a front end cover, a rear end cover and a rotor, wherein a front bearing is installed in the front end cover, and a rear bearing is installed in the rear end cover; the rotor comprises a soft magnetic sleeve, magnetic steel, a stainless steel sleeve and a shaft, wherein the soft magnetic sleeve is sleeved on the periphery of the shaft, the magnetic steel sleeve is sleeved on the periphery of the soft magnetic sleeve, and the stainless steel sleeve is sleeved outside the magnetic steel; the front end of the shaft of the rotor is rotationally connected with the front bearing, the rear end of the shaft of the rotor is rotationally connected with the rear bearing, and an elastic cushion is extruded between the rotor and the rear bearing.
2. The high impact resistant electric motor of claim 1 wherein said front bearing is a split bearing with three split segments.
3. The high impact resistant electric machine of claim 1 wherein said front and rear bearings are both C-shaped in longitudinal half section.
4. The high impact resistant motor of claim 1, wherein the front end cap has outwardly extending lugs on its outer circumference, the lugs having mounting holes therein.
5. The high impact resistant electric motor of claim 1, wherein said elastic pad is of an annular wave structure, said elastic pad being coupled to a shaft of the rotor.
6. The high impact resistant motor of claim 1, wherein the ends of the soft magnetic sleeve, the magnetic steel and the stainless steel sleeve are fixedly connected by a cured resin.
7. The high impact resistant motor of claim 1, wherein the rotor further comprises a stop collar, the stop collar is sleeved on the periphery of the shaft, and the stop collar is fixedly connected with the stainless steel sleeve.
8. The high impact resistant motor of claim 7, wherein the stop collar is fixedly connected to the stainless steel sleeve by a cured resin.
9. The high impact resistant motor of claim 8 wherein said stop collar comprises a front stop collar and a rear stop collar, said soft magnetic sleeve being located between said front stop collar and said rear stop collar.
10. The high impact resistant motor according to claim 1, wherein the soft magnetic sleeve is provided with a limiting groove axially penetrating through the outer circumference, the magnetic steel is provided with a limiting protrusion matching with the limiting groove on the inner circumference, and when the magnetic steel is sleeved with the soft magnetic sleeve, the limiting groove and the limiting protrusion are embedded with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022257415.0U CN213402668U (en) | 2020-10-12 | 2020-10-12 | High-impact-resistant motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022257415.0U CN213402668U (en) | 2020-10-12 | 2020-10-12 | High-impact-resistant motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213402668U true CN213402668U (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022257415.0U Expired - Fee Related CN213402668U (en) | 2020-10-12 | 2020-10-12 | High-impact-resistant motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN213402668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112134394A (en) * | 2020-10-12 | 2020-12-25 | 珠海宇飞科技有限公司 | High-impact-resistance motor and mounting method thereof |
-
2020
- 2020-10-12 CN CN202022257415.0U patent/CN213402668U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112134394A (en) * | 2020-10-12 | 2020-12-25 | 珠海宇飞科技有限公司 | High-impact-resistance motor and mounting method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210608 Termination date: 20211012 |
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| CF01 | Termination of patent right due to non-payment of annual fee |