CN217010464U - Anti-scram external rotor motor - Google Patents
Anti-scram external rotor motor Download PDFInfo
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- CN217010464U CN217010464U CN202220726243.3U CN202220726243U CN217010464U CN 217010464 U CN217010464 U CN 217010464U CN 202220726243 U CN202220726243 U CN 202220726243U CN 217010464 U CN217010464 U CN 217010464U
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Abstract
The utility model relates to an anti-sudden-stop outer rotor motor, which solves the problem that when a rotating shaft of the outer rotor motor is in sudden stop when touching an obstacle, a huge shearing moment is generated between the outer rotor motor and a rotor, so that serious consequences are caused. This device includes the stator, and stator outside cover is equipped with the rotor, the pivot is worn to be equipped with along the axis in the stator inboard, the rotor includes the magnet steel holder and the link of the fixed magnetic steel piece of inner wall, the link is the round frame, and the center of link is fixed with the pivot, and the ring week of link is fixed with the rear end face of magnet steel holder, magnet steel holder inner wall ring week evenly is provided with a plurality of first caulking grooves, align with first caulking groove one by one on the link and has seted up the second caulking groove, the magnetic steel piece inlays to establish and fixes at first caulking groove, and the rear end of magnetic steel piece is higher than first caulking groove and card income second caulking groove. According to the utility model, the width and the material strength of the magnetic steel sheet are utilized, and the circumferential positioning is formed by matching with the screw, so that the rotor can bear larger shearing moment compared with the screw, and the rotor is prevented from being damaged when the rotating shaft is suddenly stopped.
Description
Technical Field
The utility model belongs to the field of motors, and relates to an outer rotor motor, in particular to an anti-emergency-stop outer rotor motor.
Background
The outer rotor motor is a motor with a stator inside and a rotor outside, the stator of the outer rotor motor is inside, and copper wire consumption of a stator winding is low; the rotor is outside, and heat dispersion is good and have bigger inertia, and the operation is more stable. The rotor of external rotor electric machine is equipped with the magnet steel holder, and magnet steel piece is established in the subsides of magnet steel holder inner wall, and when the external rotor was exported through the pivot, connect through the link between pivot and the magnet steel holder, when the high rotational speed export of motor, in case touch the pivot and touch the barrier scram, magnet steel piece and magnet steel holder keep high-speed rotatory inertia, and produce huge shear torque between the pivot of scram, can lead to the magnet steel piece to drop and fly soon, the link dislocation, connect serious consequences such as screw twist off.
Disclosure of Invention
The utility model aims to solve the problem that when a rotating shaft of an outer rotor motor is in sudden stop when touching an obstacle, a huge shearing moment is generated between the rotating shaft and a rotor, which can cause serious consequences, and provides an anti-sudden-stop outer rotor motor.
The utility model adopts a technical scheme for solving the technical problems that: the utility model provides a prevent scram external rotor electric machine, includes the stator, and stator outside cover is equipped with the rotor, the pivot is worn to be equipped with along the axis in the stator inboard, the rotor includes the magnet steel holder and the link of the fixed magnetic steel piece of inner wall, the link is the circular frame, and the center and the pivot of link are fixed, and the ring week of link is fixed with the rear end face of magnet steel holder, magnet steel holder inner wall ring week evenly is provided with a plurality of first caulking grooves, the second caulking groove has been seted up with first caulking groove one-to-one alignment on the link, the magnetic steel piece inlays to establish and fixes at first caulking groove, and the rear end of magnetic steel piece is higher than first caulking groove and card income second caulking groove.
The rotor of the device is clamped between the magnetic steel retainer and the connecting frame by adopting a magnetic steel sheet, and can bear shearing torque by utilizing the width and the material strength of the rotor. When the rotating shaft is in sudden stop when contacting with an obstacle, the magnetic steel sheet still has larger torque under the driving of the stator magnetic field and the action of self inertia. If the magnetic steel sheet is only adhered to the magnetic steel retainer by glue, the magnetic steel sheet can fall off under the action of shearing moment; if the magnetic steel sheet is embedded on the magnetic steel retainer to keep synchronization and does not extend to the connecting frame, the connecting screw of the magnetic steel retainer and the connecting frame can be subjected to great shearing force, the size of the screw is limited by the size of the rotor, the strength is limited, the screw is easy to deform and even twisted off, the connecting frame and the magnetic steel retainer are dislocated or broken and separated, and the motor is scrapped. This device magnetic steel sheet rear end stretches out the card and goes into the link, utilizes the width and the material strength of magnetic steel sheet, and the cooperation screw forms the circumference location between magnet steel holder and the link, compares the screw and can bear bigger shear torque, rotor damage when preventing the pivot scram.
Preferably, the rotor further comprises a pressing ring arranged on the front end face of the magnetic steel retainer, the connecting frame, the magnetic steel retainer and the pressing ring are connected in series through screws, the screws penetrate through the rotor from back to front, and the screws are uniformly distributed on the periphery of the rotor. The magnetic steel retainer is formed by slicing and stacking, and a threaded hole cannot be tapped, so that the threaded hole is formed by a compression ring and matched with a screw to fix the rotor in series.
Preferably, the number of the screws and the number of the magnetic steel sheets are 1: 1 set up. The screws can be aligned with the magnetic steel sheets and can also be arranged between the adjacent magnetic steel sheets, the number of the screws and the number of the magnetic steel sheets are kept consistent, and the screws and the magnetic steel sheets around the rotor are ensured to be uniformly distributed and have isotropy.
Preferably, the middle of the connecting frame is an inner ring fixed with the rotating shaft, the periphery of the outer side of the connecting frame is an outer ring fixed with the magnetic steel retainer, the inner ring and the outer ring are connected through spokes, and the spokes are in the shape of inclined fan blades. The spokes can be ordinary spokes, so that the loss of output power is reduced; or the fan-shaped radiator can be made into a fan blade shape, and auxiliary heat dissipation is carried out by utilizing partial output power.
Preferably, a stator support is arranged on the inner side of the stator, a middle hole for the rotating shaft to pass through is formed in the middle of the stator support, and bearings for erecting the rotating shaft are respectively arranged at the front end and the rear end of the stator support.
The rear end of the magnetic steel sheet extends out of the connecting frame and is clamped in the connecting frame, circumferential positioning is formed by matching the magnetic steel sheet with the screw according to the width and the material strength of the magnetic steel sheet, and compared with the screw, the magnetic steel sheet can bear larger shearing torque, and the rotor is prevented from being damaged when a rotating shaft is in emergency stop.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional structure of the present invention.
Fig. 3 is a schematic illustration of an exploded structure of the present invention.
Fig. 4 is another perspective view of fig. 3 of the present invention.
In the figure: 1. the stator comprises a stator 2, a rotor 3, a rotating shaft 4, a connecting frame 5, a magnetic steel retainer 6, a press-damage part 7, a magnetic steel sheet 8, a stator support 9, a bearing 10, a screw 11, a first caulking groove 12 and a second caulking groove.
Detailed Description
The utility model is further illustrated by the following specific examples in conjunction with the accompanying drawings.
Example (b): an anti-sudden stop outer rotor motor is shown in figures 1 and 2. This device includes stator 1, and the stator outside cover is equipped with rotor 2, the inboard axis of following of stator is worn to be equipped with pivot 3. The inner side of the stator 1 is provided with a stator bracket 8, the middle of the stator bracket is provided with a middle hole for the rotating shaft to pass through, and the front end and the rear end of the stator bracket are respectively provided with a bearing 9 for erecting the rotating shaft.
The rotor includes link 4, magnet steel holder 5 and clamping ring 6 from back to front in proper order, and link 4, magnet steel holder 5, clamping ring 6 adopt eight screws 10 to establish ties, the screw is worn to establish to the front after from, the screw is at rotor ring week evenly distributed. The middle of the connecting frame 4 is an inner ring fixed with the rotating shaft 3, the periphery of the outer side of the connecting frame 4 is an outer ring fixed with the magnetic steel retainer 5, the inner ring and the outer ring are connected through spokes, and the spokes are in the shape of fan blades arranged obliquely.
As shown in fig. 3 and 4, eight magnetic steel sheets 7 are uniformly embedded on the circumference of the inner wall of the magnetic steel retainer. The screw 10 is aligned with the center line of the magnetic steel sheet 7. The magnet steel holder inner wall periphery evenly is provided with eight first caulking grooves 11, second caulking groove 12 has been seted up with first caulking groove one-to-one alignment on the link, magnetism steel sheet 7 inlays to establish and fixes at first caulking groove 11, and the rear end of magnetism steel sheet is higher than first caulking groove and card income second caulking groove 12.
The rear end of the magnetic steel sheet extends out to be clamped into the connecting frame, the width and the material strength of the magnetic steel sheet are utilized, the circumferential positioning between the magnetic steel retainer and the connecting frame is formed by matching screws, when the rotating shaft is blocked and is stopped suddenly, the shearing moment can be shared by the magnetic steel sheet, the shearing force received by the screws is reduced, and the magnetic steel retainer and the connecting frame are prevented from being dislocated.
Claims (5)
1. The utility model provides a prevent scram external rotor electric machine, includes the stator, and the stator outside cover is equipped with rotor, its characterized in that: the pivot is worn to be equipped with along the axis in the stator inboard, the rotor includes the magnet steel holder and the link of the fixed magnetic steel sheet of inner wall, the link is the link, and the center of link is fixed with the pivot, and the ring week of link is fixed with the rear end face of magnet steel holder, magnet steel holder inner wall ring week evenly is provided with a plurality of first caulking grooves, align one by one with first caulking groove on the link and seted up the second caulking groove, the magnetic steel sheet inlays to establish and fixes at first caulking groove, and the rear end of magnetic steel sheet is higher than first caulking groove and card income second caulking groove.
2. The anti-sudden stop external rotor motor according to claim 1, wherein: the rotor is still including setting up the clamping ring of terminal surface before the magnet steel holder, and link, magnet steel holder, clamping ring adopt the screw to establish ties, the screw is worn to establish to preceding from the back, the screw is at rotor ring week evenly distributed.
3. The anti-sudden stop external rotor motor according to claim 2, characterized in that: the number of the screws and the number of the magnetic steel sheets are 1: 1 set.
4. The anti-sudden-stop external rotor motor according to claim 1, 2 or 3, characterized in that: the middle of the connecting frame is provided with an inner ring fixed with the rotating shaft, the periphery of the outer side of the connecting frame is provided with an outer ring fixed with the magnetic steel retainer, the inner ring and the outer ring are connected through spokes, and the spokes are in a fan blade shape which is obliquely arranged.
5. The anti-sudden-stop external rotor motor according to claim 1, 2 or 3, characterized in that: the inner side of the stator is provided with a stator support, the middle of the stator support is provided with a middle hole for the rotating shaft to pass through, and the front end and the rear end of the stator support are respectively provided with a bearing for erecting the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220726243.3U CN217010464U (en) | 2022-03-31 | 2022-03-31 | Anti-scram external rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220726243.3U CN217010464U (en) | 2022-03-31 | 2022-03-31 | Anti-scram external rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217010464U true CN217010464U (en) | 2022-07-19 |
Family
ID=82374425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220726243.3U Active CN217010464U (en) | 2022-03-31 | 2022-03-31 | Anti-scram external rotor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217010464U (en) |
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2022
- 2022-03-31 CN CN202220726243.3U patent/CN217010464U/en active Active
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