CN212627424U - External rotor motor and aerator - Google Patents
External rotor motor and aerator Download PDFInfo
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- CN212627424U CN212627424U CN202021746300.1U CN202021746300U CN212627424U CN 212627424 U CN212627424 U CN 212627424U CN 202021746300 U CN202021746300 U CN 202021746300U CN 212627424 U CN212627424 U CN 212627424U
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- outer housing
- external rotor
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Abstract
The utility model relates to an external rotor motor, which comprises an external rotor component and an internal stator component, wherein; the outer rotor assembly comprises a machine shell and an outer rotor shaft fixedly arranged at the front end of the machine shell; the inner stator assembly is arranged in the shell and comprises an inner fixed shaft and a coil assembly; and the outer rotor assembly is arranged in the outer housing, the outer rotating shaft extends out of the front end wall of the outer housing, and the inner fixed shaft is fixedly connected with the rear end of the outer housing. The aerator is characterized by comprising a floating frame, an impeller and an outer rotor motor, wherein the outer rotor motor is fixedly connected with the floating frame, and an outer rotating shaft of the outer rotor motor is connected with the floating frame. The utility model discloses an external rotor electric machine appearance is the same with the internal rotor electric machine on the market, and the reason lies in, conceals in the outer housing with the pivoted casing, makes the utility model discloses an external rotor electric machine can carry out fixed mounting through the outer housing to make the motor can export big torsion.
Description
Technical Field
The utility model relates to a motor field, concretely relates to external rotor electric machine and oxygen-increasing machine.
Background
The outer rotor motor has the advantage of large torsion; the common outer rotor motor comprises an inner rotor assembly and an outer rotor assembly, wherein the inner rotor assembly comprises an inner fixed shaft and a coil fixedly arranged on the inner fixed shaft, and the outer rotor assembly comprises a rotating machine shell and magnetic steel fixedly arranged on the inner wall of the machine shell.
In the prior art, the outer rotor motor has some defects in the use process, for example, in some structures, the motor shell needs to be fixed, so that the motor can be installed, and in such occasions, if the outer rotor motor is used, the outer rotor motor cannot be installed, so that only the inner rotor motor with small torsion can be selected.
In the above-mentioned installation occasions, for example, the aerator used on the fish pond, the combination of the inner rotor motor and the speed reducer is used in the conventional aerator to realize the output of large torque, so that the aerator has heavier mass and higher purchase cost.
In summary, the conventional outer rotor motor has the problem that the outer shell of the outer rotor motor cannot be fixed and installed but only the inner rotor motor with small torque force can be continuously installed because the outer shell needs to rotate.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the outer rotor motor and the aerator are provided, and the problem that the outer rotor motor cannot be fixedly installed through fixing an outer shell of the outer rotor motor and can only continue to be installed on the inner rotor motor with small torsion is solved.
The utility model provides a technical scheme that its technical problem adopted is:
a first aspect;
an external rotor motor is provided, which comprises
The outer rotor assembly and the inner stator assembly, wherein;
the outer rotor assembly comprises a machine shell and an outer rotor shaft fixedly arranged at the front end of the machine shell;
the inner stator assembly is arranged in the shell and comprises an inner fixed shaft and a coil assembly, the front end of the inner fixed shaft is in rotating fit with the inner wall of the front end of the shell, and the rear end of the inner fixed shaft extends out of the rear end wall of the shell and is fixedly arranged; and
the outer rotor assembly is arranged in the outer housing, the outer rotating shaft extends out of the front end wall of the outer housing and forms a rotating fit with the outer housing, and the inner fixed shaft is fixedly connected with the rear end of the outer housing.
Furthermore, a base is fixedly arranged at the rear end of the outer housing, and the rear end of the inner fixed shaft is fixedly connected with the base.
Furthermore, a step-shaped connecting section is formed at the rear end of the inner fixed shaft, the connecting section penetrates through the base, a gasket is sleeved on the inner side of the connecting section, a locking nut is screwed on the outer side of the connecting section, and the locking nut is screwed so that the base is clamped between the gasket and the locking nut.
Furthermore, a steel ring is fixedly arranged in the through hole of the base, the connecting section penetrates through the through hole of the steel ring, and the steel ring is positioned between the gasket and the locking nut;
an inner convex ring and a plurality of first inner key protrusions are arranged in the through hole of the base, an outer groove and a plurality of first inner key grooves are formed in the outer wall of the steel ring, the outer groove of the steel ring is matched with the inner convex ring, and the first inner key grooves of the steel ring are respectively matched with the first inner key protrusions;
and a second inner key protrusion is arranged in the ring hole of the steel ring, a second inner key groove is formed in the connecting section, and the second inner key groove of the connecting section is in convex fit with the second inner key of the steel ring.
Furthermore, four connecting portions are formed in the circumferential direction of the base, each connecting portion is in threaded connection with two fastening screws, and each fastening screw penetrates through the connecting portion and then forms abutting contact with the inner wall of the outer housing.
Furthermore, the casing comprises a cylindrical casing body, a front end cover and a rear end cover, the front end cover is fixedly arranged at the front end of the casing body, the rear end cover is fixedly arranged at the rear end of the casing body, and the outer rotating shaft is fixedly arranged on the front end cover.
Further, a first sealing ring is arranged between the outer rotating shaft and the machine shell so as to seal the outer rotating shaft and the machine shell;
and a second sealing ring is arranged between the base and the outer housing shell so as to form sealing between the base and the outer housing shell.
A second aspect;
the aerator comprises a floating frame, an impeller and the outer rotor motor, wherein the outer rotor motor is fixedly connected with the floating frame, and the outer rotating shaft of the outer rotor motor is connected.
The utility model has the advantages that:
the utility model provides an external rotor electric machine, through externally add an outer housing, external rotor electric machine's outer rotor shaft stretches out from the outer housing front end, makes the utility model discloses an external rotor electric machine appearance is the same with the internal rotor electric machine on the market, and the reason lies in, conceals in the outer housing with the pivoted casing, makes the utility model discloses an external rotor electric machine can carry out fixed mounting through the outer housing to make the motor can export big torsion.
The aerator adopts the outer rotor motor, so that the whole quality of the aerator can be lighter, and the aerator can still realize the output of large torque force to the impeller without being provided with a speed reducer.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a half-sectional view of the outer rotor motor of the present invention;
FIG. 2 is a schematic view of a base;
FIG. 3 is a schematic view of a steel ring;
FIG. 4 is a schematic view of a housing;
FIG. 5 is a schematic view of an inner fixed shaft;
the automobile wheel hub connecting structure comprises a fixed shaft 1, an inner fixed shaft 1A, a connecting section 2, a shell 21, a front end cover 22, a shell 23, a rear end cover 3, a base 31, an inner convex ring 32, a first inner key protrusion 33, a connecting part 4, an outer housing 5, a steel ring 51, an outer groove 52, a first inner key groove 53, a second inner key protrusion 6, a gasket 7 and a locking nut.
Detailed Description
The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
Example one
As shown in fig. 1 to 5, an outer rotor motor includes an outer rotor assembly and an inner stator assembly, wherein; the outer rotor assembly comprises a machine shell 2 and an outer rotor shaft fixedly arranged at the front end of the machine shell 2; the inner stator assembly is disposed in the case 2.
The inner stator assembly comprises an inner fixed shaft 1 and a coil assembly, the coil assembly comprises a coil bracket and a copper wire wound on the coil bracket, the front end of the inner fixed shaft 1 is in rotating fit with the inner wall of the front end of the casing 2, and the rear end of the inner fixed shaft 1 extends out of the rear end wall of the casing 2 and is fixedly arranged; and the outer rotor component is arranged in the outer housing 4, the outer rotating shaft extends out of the front end wall of the outer housing 4 and forms a rotating fit with the outer housing 4, and the inner fixed shaft 1 is fixedly connected with the rear end of the outer housing 4.
In this embodiment, the inner wall of the housing 2 is provided with magnetic steels which are uniformly distributed around the circumference of the coil assembly.
Specifically, in this embodiment, the base 3 is fixedly disposed at the rear end of the outer housing 4, and the rear end of the inner fixed shaft 1 is fixedly connected to the base 3.
Specifically, in this embodiment, as shown in fig. 5, a step-shaped connecting section 1A is formed at the rear end of the inner fixed shaft 1, the connecting section 1A penetrates through the base 3, a gasket 6 is sleeved on the inner side of the connecting section 1A, a locking nut 7 is screwed on the outer side of the connecting section 1A, and the locking nut 7 is screwed so that the base 3 is clamped between the gasket 6 and the locking nut 7.
Specifically, in this embodiment, as shown in fig. 2 and fig. 3, a steel ring 5 is fixedly disposed in the through hole of the base 3, the connecting section 1A passes through the through hole of the steel ring 5, and the steel ring 5 is located between the washer 6 and the lock nut 7;
an inner convex ring 31 and a plurality of first inner key protrusions 32 are arranged in the through hole of the base 3, each first inner key protrusion 32 is axially arranged and is circumferentially and uniformly distributed in the through hole, an outer groove 51 and a plurality of first inner key grooves 52 are formed in the outer wall of the steel ring 5, the outer groove 51 of the steel ring 5 is matched with the inner convex ring 31, and each first inner key groove 52 of the steel ring 5 is matched with each first inner key protrusion 32.
The base 3 is made of aluminum, the steel ring 5 is placed in a mold cavity of the base 3 before the base 3 is poured, then aluminum liquid is poured, and after the base is poured, the steel ring 5 is connected to the middle of the base 3 in a variable mode.
The outer groove 51 and the plurality of first inner keyways 52 on the steel ring 5 are used for improving the integrity between the steel ring 5 and the base 3.
And a second inner key projection 53 is arranged in a ring hole of the steel ring 5, a second inner key groove is formed in the connecting section 1A, and the second inner key groove of the connecting section 1A is matched with the second inner key projection 53 of the steel ring 5.
Specifically, in this embodiment, four connecting portions 33 are formed in the circumferential direction of the base 3, each connecting portion 33 is screwed with two set screws, and each set screw penetrates through the connecting portion 33 and then forms abutting contact with the inner wall of the outer casing 4.
Specifically, in this embodiment, as shown in fig. 4, the housing 2 includes a cylindrical housing 22, a front end cover 21 and a rear end cover 23, the front end cover 21 is fixedly disposed at the front end of the housing 22, an outer rotating shaft is fixedly disposed on the front end cover 21, the rear end cover 23 is fixedly disposed at the rear end of the housing 22, and the outer rotating shaft is fixedly disposed on the front end cover 21.
Specifically, in this embodiment, a first sealing ring is disposed between the outer rotating shaft and the casing 2, so as to seal the outer rotating shaft and the casing 2; and a second sealing ring is arranged between the base 3 and the outer housing 4 so as to form sealing between the base 3 and the outer housing 4. Through two sealing rings that set up, promote the leakproofness of housing 4, prevent that water from getting into inside housing 4.
Specifically, as shown in fig. 1, the front end of the inner fixed shaft 1 forms a rotation fit with the inner walls of the front end cover 21 and the rear end cover 23 through bearings, so as to realize the rotation support of the inner fixed shaft 1 in the housing 2.
The utility model discloses an external rotor electric machine, light see exterior structure, and it is the same with driven inner rotor electric machine, can directly realize whole external rotor electric machine's fixed through the bottom at fixed outer housing 4 or rear portion, but its inside is actually that casing 2 is rotating the outer rotor shaft, makes the outer rotor shaft have big torque output, makes the utility model discloses an external rotor electric machine can install the place that external rotor electric machine can't install in the past.
The outer cover shell 4, the base 3 and the inner fixed shaft 1 are fixedly connected into a whole. Make the utility model discloses an external rotor electric machine realizes stable installation.
Example two
The aerator comprises a floating frame, an impeller and the outer rotor motor in the first embodiment, wherein the outer rotor motor is fixedly connected with the floating frame, and an outer rotating shaft of the outer rotor motor is connected.
The outer rotor motor has waterproof sealing performance by means of the two sealing rings, so that the outer rotor motor can be directly fixed on the floating frame, and the outer rotor motor has larger output torque force during operation, so that the aerator does not need to be provided with an additional speed reducer to drive the impeller to rotate, the aerator has large torque force, and meanwhile, the production and manufacturing cost is reduced.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. An external rotor motor is characterized by comprising
The outer rotor assembly and the inner stator assembly, wherein;
the outer rotor assembly comprises a machine shell and an outer rotor shaft fixedly arranged at the front end of the machine shell;
the inner stator assembly is arranged in the shell and comprises an inner fixed shaft and a coil assembly, the front end of the inner fixed shaft is in rotating fit with the inner wall of the front end of the shell, and the rear end of the inner fixed shaft extends out of the rear end wall of the shell and is fixedly arranged; and
the outer rotor assembly is arranged in the outer housing, the outer rotating shaft extends out of the front end wall of the outer housing and forms a rotating fit with the outer housing, and the inner fixed shaft is fixedly connected with the rear end of the outer housing.
2. The external rotor electric machine of claim 1,
the rear end of the outer housing is fixedly provided with a base, and the rear end of the inner fixed shaft is fixedly connected with the base.
3. The external rotor electric machine according to claim 2,
the rear end of the inner fixed shaft forms a step-shaped connecting section, the connecting section penetrates through the base, the gasket is sleeved on the inner side of the connecting section, the outer side of the connecting section is in threaded connection with the locking nut, and the locking nut is screwed tightly, so that the base is clamped between the gasket and the locking nut.
4. The external rotor electric machine of claim 3,
a steel ring is fixedly arranged in the through hole of the base, the connecting section penetrates through the through hole of the steel ring, and the steel ring is positioned between the gasket and the locking nut;
an inner convex ring and a plurality of first inner key protrusions are arranged in the through hole of the base, an outer groove and a plurality of first inner key grooves are formed in the outer wall of the steel ring, the outer groove of the steel ring is matched with the inner convex ring, and the first inner key grooves of the steel ring are respectively matched with the first inner key protrusions;
and a second inner key protrusion is arranged in the ring hole of the steel ring, a second inner key groove is formed in the connecting section, and the second inner key groove of the connecting section is in convex fit with the second inner key of the steel ring.
5. The external rotor electric machine according to claim 2,
four connecting portions are formed in the circumferential direction of the base, each connecting portion is in threaded connection with two fastening screws, and each fastening screw penetrates through the connecting portion and then is in abutting contact with the inner wall of the outer housing.
6. The external rotor electric machine of claim 1, wherein the casing comprises a cylindrical casing, a front end cap and a rear end cap, the front end cap is fixedly disposed at the front end of the casing, the rear end cap is fixedly disposed at the rear end of the casing, and the external rotor shaft is fixedly disposed on the front end cap.
7. The external rotor electric machine according to claim 2,
a first sealing ring is arranged between the outer rotating shaft and the machine shell so as to seal the outer rotating shaft and the machine shell;
and a second sealing ring is arranged between the base and the outer housing shell so as to form sealing between the base and the outer housing shell.
8. An aerator, which is characterized by comprising a floating frame, an impeller and an outer rotor motor according to any one of claims 1 to 7, wherein the outer rotor motor is fixedly connected with the floating frame, and an outer rotating shaft of the outer rotor motor is connected with the floating frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021746300.1U CN212627424U (en) | 2020-08-19 | 2020-08-19 | External rotor motor and aerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021746300.1U CN212627424U (en) | 2020-08-19 | 2020-08-19 | External rotor motor and aerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212627424U true CN212627424U (en) | 2021-02-26 |
Family
ID=74712680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021746300.1U Active CN212627424U (en) | 2020-08-19 | 2020-08-19 | External rotor motor and aerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212627424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977186A (en) * | 2021-03-01 | 2021-06-18 | 宁波精成车业有限公司 | Motor drive equipment with upset temperature control function |
-
2020
- 2020-08-19 CN CN202021746300.1U patent/CN212627424U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977186A (en) * | 2021-03-01 | 2021-06-18 | 宁波精成车业有限公司 | Motor drive equipment with upset temperature control function |
| CN112977186B (en) * | 2021-03-01 | 2021-11-23 | 宁波精成车业有限公司 | Motor drive equipment with upset temperature control function |
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