CN219760789U - Brushless motor gear box - Google Patents

Abstract

The utility model discloses a brushless motor gear box, and relates to the technical field of motors; the planetary gear comprises an outer shell, a stator assembly, a rotor assembly, an inner gear ring, a planetary gear and a planetary carrier; the outer shell is provided with a first accommodating space, the rotor assembly and the stator assembly are coaxially arranged and are arranged in the accommodating space, and a first gear is axially arranged at the axis of the rotor assembly; the inner gear ring is arranged on the inner ring of the stator assembly, and a first rotating tooth is formed on the inner ring of the inner gear ring; the planet gears are arranged on the planet carrier and are respectively meshed with the first gear and the annular gear; the rotor assembly is adapted to rotate the planet carrier by axial rotation of the planet gears about the stator assembly; the technical scheme provided by the utility model solves the technical problem that the existing motor gear box is large in size and cannot realize further flattening.

Description

Brushless motor gear box

Technical Field

The utility model relates to the technical field of motors, in particular to a brushless motor gear box.

Background

The gear box is a basic component of the mechanical industry and is widely applied to industries such as metallurgy, automobiles, wind power, rails, machine tools and the like.

The gear box of traditional motor is connected in the output shaft of motor generally, and the two superposes the setting, however to some products that need to realize flattening design, its volume of this structural style can't realize further compression, finally influences its application range, can't be applicable to the product that needs flattening, consequently, how through the structure of further adjustment gear box, realize its further flattening, is one of them main improvement direction.

Disclosure of Invention

The utility model aims to provide a brushless motor gear box, and the technical scheme provided by the utility model solves the technical problem that the existing motor gear box is large in size and cannot be flattened further.

In order to solve the technical problems, the utility model provides a brushless motor gear box, which comprises an outer shell, a stator assembly, a rotor assembly, an annular gear, a planet wheel and a planet carrier;

the housing body is provided with a first accommodating space, the rotor assembly and the stator assembly are coaxially arranged and are arranged in the accommodating space, and a first gear is axially arranged at the axis of the rotor assembly;

the inner gear ring is arranged on the inner ring of the stator assembly, and first rotating teeth are formed on the inner ring of the inner gear ring;

the planet gears are arranged on the planet carrier and are respectively meshed with the first gear and the annular gear; the rotor assembly is adapted to rotate the planet carrier by axial rotation of the planet gears about the stator assembly;

in the implementation process, the stator component and the rotor component are matched to realize the rotation of the rotor component, the rotor component rotates to drive the first gear at the axle center of the rotor component to rotate, and the planet gears are respectively meshed with the annular gear and the first gear, so that when the first gear rotates, the planet gears rotate along with the rotation, are arranged on the planet carrier, and finally realize the rotation output through the planet carrier; in this scheme, through setting up planet wheel and ring gear inside the motor, ingenious with the relevant structure integration of gear box in the motor inside, and need not to carry out external setting, the whole volume of this mode can effectual compression motor realizes the flattening of motor, and then makes the motor applicable more have the product of flattening demand, this scheme structural design ingenious, the practicality is strong.

Preferably, the rotor assembly comprises a rotor main body and a magnetic ring arranged on the inner annular wall surface of the rotor main body;

the first gear is arranged at the axis of the rotor main body;

in the implementation process, the rotor main body is driven to rotate through the magnetic induction effect between the magnetic ring and the stator assembly, and finally the first gear is driven to rotate.

Preferably, the stator assembly comprises a drive plate, a coil winding and a stator core; the driving plate is arranged on the end face of the inner wall of the outer shell, the coil winding is abutted to the driving plate, and the stator core is connected with the coil winding.

Preferably, the planet carrier comprises a mounting part and an output shaft, and a through groove is formed on the mounting part along the radial direction of the mounting part in a penetrating way;

in the implementation process, the planet wheel is arranged in the mounting part of the planet carrier, the through groove formed on the mounting part can be used for the planet wheel to pass through, and the planet wheel can be meshed with the first rotating teeth on the inner gear ring while being meshed with the first gear; the first gear drives the planet wheel to rotate, and then drives the planet carrier to rotate, and the planet carrier realizes rotation output through the output shaft.

Preferably, the planetary gear transmission device further comprises a planetary gear shaft arranged on the through groove, wherein two ends of the planetary gear shaft are respectively arranged on two opposite wall surfaces of the through groove; the planet wheel is coaxially arranged on the planet wheel shaft;

in the implementation process, the two ends of the planetary wheel shaft are supported by the mounting parts, the rigidity of the planetary wheel shaft is obviously improved, and compared with the single-side cantilever type mounting mode of the planetary wheel shaft in the prior art, the technical scheme provided by the utility model has the advantages that the rotation process of the planetary wheel is more stable, the risk of planetary wheel shaft deflection caused by external stress is greatly reduced, and the structural stability is improved.

Preferably, a first through hole is formed in the outer case, and the output shaft penetrates the through hole.

Preferably, a bearing is further arranged in the outer shell, and the bearing is arranged on the periphery of the output shaft and limits the output shaft so as to limit the output shaft from deviating from the axial direction of the output shaft;

in the realization process, the bearing can be more stable and smooth to ensure the rotation process of the output shaft, and meanwhile, the bearing also plays a limiting role on the output shaft, so that the probability of deviation in rotation is reduced, and the precision and stability of rotation output are improved.

Preferably, the planetary gears are provided with three groups and are distributed at equal angles.

Preferably, a first clamping structure is formed on the outer side wall of the inner gear ring, and a second clamping structure matched with the first clamping structure is formed on the inner wall of the stator assembly;

in the implementation process, the annular gear is assembled with the stator assembly through the first clamping structure, so that the annular gear is fixed, and the annular gear is matched with the first gear to realize limit of the planet gears.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the planetary gears and the annular gears are arranged in the motor, so that the related structure of the gear box is skillfully integrated in the motor without external arrangement, the whole volume of the motor can be effectively compressed by adopting the mode, the flattening of the motor is realized, and the motor can be further suitable for more products with flattening requirements.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an exploded construction of one embodiment of the present utility model;

FIG. 3 is a schematic view of a portion of an embodiment of the present utility model;

FIG. 4 is a schematic view of a portion of an embodiment of the present utility model;

FIG. 5 is a schematic view of a portion of an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a planet carrier according to an embodiment of the present utility model;

fig. 7 is a schematic structural view of an inner gear ring according to an embodiment of the present utility model.

Wherein: 10. an outer housing; 11. a main housing; 12. an end cap; 20. a rotor assembly; 21. a rotor body; 211. a first gear; 22. a magnetic ring; 30. a stator assembly; 31. a driving plate; 32. a coil winding; 33. a stator core; 41. a planet wheel; 411. a planetary wheel shaft; 42. a planet carrier; 421. a mounting part; 4211. a through groove; 422. an output shaft; 50. an inner gear ring; 51. a first rotating tooth; 52. a first clamping structure; 60. and (3) a bearing.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "side," "front," "rear," and the like indicate an orientation or a positional relationship based on installation, and are merely for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone.

It should be further noted that, in the embodiments of the present utility model, the same reference numerals denote the same components or the same parts, and for the same parts in the embodiments of the present utility model, reference numerals may be given to only one of the parts or the parts in the drawings, and it should be understood that, for other same parts or parts, the reference numerals are equally applicable.

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings in which:

examples

The traditional gearbox of the motor is generally connected with the output shaft of the motor, and the motor and the gearbox are overlapped, however, for some products needing to be flattened, the volume of the structural mode cannot be further compressed, the application range of the structural mode is finally influenced, and the structural mode cannot be suitable for the products needing to be flattened, so that the structural mode is used for further flattening by further adjusting the structure of the gearbox, and the structural mode is one of main improvement directions; in order to solve the above technical problems, the present embodiment provides the following technical solutions:

referring to fig. 1-7, the present embodiment provides a brushless motor gearbox, which includes an outer housing 10, a stator assembly 30, a rotor assembly 20, an inner gear ring 50, planetary gears 41 and a planet carrier 42;

specifically, the outer casing 10 is formed with a first accommodating space, the rotor assembly 20 and the stator assembly 30 are coaxially arranged and arranged in the accommodating space, and a first gear 211 is axially arranged at the axial center of the rotor assembly 20;

specifically, the inner gear ring 50 is disposed on an inner ring of the stator assembly 30, and a first rotating tooth 51 is formed on the inner ring of the inner gear ring 50;

specifically, the planetary gear 41 is disposed on the planetary carrier 42, and the planetary gear 41 is meshed with the first gear 211 and the ring gear 50 respectively; wherein the rotor assembly 20 is adapted to rotate the planet carrier 42 by axial rotation of the planet gears about the stator assembly 30;

in the above scheme, the stator assembly 30 and the rotor assembly 20 cooperate to realize the rotation of the rotor assembly 20, the rotation of the rotor assembly 20 drives the first gear 211 at the axle center to rotate, and the planetary gears 41 are respectively meshed with the inner gear ring 50 and the first gear 211, so that when the first gear 211 rotates, the planetary gears 41 follow rotation, the planetary gears 41 are arranged on the planet carrier 42, and finally the rotation output is realized through the planet carrier 42; in this scheme, through setting up planet wheel 41 and ring gear 50 inside the motor, ingenious with the relevant structure integration of gear box in the motor inside, and need not to carry out external setting, the whole volume of adopting this mode can effectual compression motor realizes the flattening of motor, and then makes the motor applicable more have the product of flattening demand, this scheme structural design ingenious, the practicality is strong.

Further, in some embodiments, the planet 41 is provided with three groups and is equiangularly distributed. Further 120 deg..

Specifically, referring to fig. 2, the outer housing 10 includes a main housing 11 and an end cap 12 disposed at one end of the main housing 11.

Specifically, the rotor assembly 20 includes a rotor main body 21 and a magnetic ring 22 disposed on an inner circumferential wall of the rotor main body 21;

further, the first gear 211 is disposed at the axial center of the rotor body 21;

in the above scheme, the rotor body 21 is driven to rotate by the magnetic induction between the magnetic ring 22 and the stator assembly 30, and finally the first gear 211 is driven to rotate.

Specifically, referring to fig. 4, the stator assembly 30 includes a driving plate 31, a coil winding 32, and a stator core 33; the drive plate 31 is provided on an end surface of the inner wall of the outer case 10, the coil winding 32 is abutted against the drive plate 31, and the stator core 33 is connected to the coil winding 32.

Specifically, the stator core 33 is formed by punching, stacking and riveting a plurality of thin silicon steel sheets, and the tooth portions thereof are coated with an insulating layer.

Specifically, the coil winding 32 is wound in the slot of the insulated stator core 33 by an enameled round copper wire, wherein the coil winding 32 is insulated from the stator core 33.

Specifically, referring to fig. 6, the planet carrier 42 includes a mounting portion 421 and an output shaft 422, a through slot 4211 is formed on the mounting portion 421 along a radial direction thereof, and the planet gear 41 is adapted to pass through the through slot 4211 and engage with the ring gear 50;

in the above-mentioned scheme, the planetary gear 41 is mounted in the mounting portion 421 of the planetary gear carrier 42, and the through groove 4211 formed on the mounting portion 421 can allow the planetary gear 41 to pass through, so that the planetary gear 41 can be meshed with the first gear 211 and the first rotating teeth 51 on the ring gear 50; the first gear 211 drives the planetary gear 41 to rotate, and further drives the planet carrier 42 to rotate, and the planet carrier 42 realizes rotation output through the output shaft 422.

Specifically, referring to fig. 4 and 6, the planetary gear shaft 411 is further provided on the through slot 4211, and two ends of the planetary gear shaft 411 are respectively provided on two opposite wall surfaces of the through slot 4211; the planet wheel 41 is coaxially arranged on the planet wheel shaft 411;

in the above scheme, both ends of the planetary axle 411 are supported by the mounting portions 421, and the rigidity of the planetary axle 411 is obviously improved, compared with the single-side cantilever type mounting mode of the planetary axle 411 in the prior art, the technical scheme provided by the utility model further improves the planetary axle 411, so that the rotation process of the planetary wheel 41 is more stable, the risk of the planetary axle 411 shifting due to external stress is greatly reduced, and the structural stability is improved.

Further, the mounting portion 421 is formed with a mounting hole for mounting the planetary wheel shaft 411.

Specifically, a first through hole is formed in the outer case 10, and the output shaft 422 penetrates the through hole.

Specifically, a bearing 60 is further disposed in the outer casing 10, and the bearing 60 is disposed on the outer periphery of the output shaft 422 and limits the output shaft 422 to limit the output shaft 422 from deviating from the axial direction thereof;

in the above scheme, the bearing 60 can be more stable and smooth to ensure the rotation process of the output shaft 422, and meanwhile, the bearing 60 also plays a limiting role on the output shaft 422, so that the probability of deviation in rotation is reduced, and the precision and stability of rotation output are improved.

Specifically, referring to fig. 7, a first clamping structure 52 is formed on an outer side wall of the ring gear 50, and a second clamping structure (not shown) adapted to the first clamping structure 52 is formed on an inner wall of the stator assembly 30;

further, the first clamping structure 52 may be understood as a bump, and the second clamping structure may be understood as a groove adapted to the bump; of course, the two may be reversed.

In the above scheme, the inner gear ring 50 is assembled with the stator assembly 30 through the first clamping structure 52, so as to fix the inner gear ring 50, and the inner gear ring 50 cooperates with the first gear 211 to limit the planetary gears 41

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model in any way, but any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present utility model fall within the scope of the technical solutions of the present utility model.

Claims (9)

1. A brushless motor gear box, characterized in that: the planetary gear comprises an outer shell, a stator assembly, a rotor assembly, an inner gear ring, a planetary gear and a planetary carrier;

the housing body is provided with a first accommodating space, the rotor assembly and the stator assembly are coaxially arranged and are arranged in the accommodating space, and a first gear is axially arranged at the axis of the rotor assembly;

the inner gear ring is arranged on the inner ring of the stator assembly, and first rotating teeth are formed on the inner ring of the inner gear ring;

the planet gears are arranged on the planet carrier and are respectively meshed with the first gear and the annular gear; the rotor assembly is adapted to rotate the planet carrier by axial rotation of the planet wheel about the stator assembly.

2. A brushless motor gearbox as claimed in claim 1, wherein: the rotor assembly comprises a rotor main body and a magnetic ring arranged on the inner annular wall surface of the rotor main body;

the first gear is arranged at the axis of the rotor main body.

3. A brushless motor gearbox as claimed in claim 1, wherein: the stator assembly comprises a driving plate, a coil winding and a stator core; the driving plate is arranged on the end face of the inner wall of the outer shell, the coil winding is abutted to the driving plate, and the stator core is connected with the coil winding.

4. A brushless motor gearbox as claimed in claim 1, wherein: the planet carrier comprises a mounting part and an output shaft, and a through groove is formed in the mounting part in a penetrating manner along the radial direction of the mounting part.

5. A brushless motor gearbox as defined in claim 4, wherein: the planetary gear shaft is arranged on the through groove, and two ends of the planetary gear shaft are respectively arranged on two opposite wall surfaces of the through groove; the planet wheel is coaxially arranged on the planet wheel shaft.

6. A brushless motor gearbox as defined in claim 4, wherein: a first through hole is formed in the outer case, and the output shaft penetrates through the through hole.

7. A brushless motor gearbox as defined in claim 6, wherein: and a bearing is further arranged in the outer shell, and the bearing is arranged on the periphery of the output shaft and limits the output shaft so as to limit the output shaft to deviate from the axial direction of the output shaft.

8. A brushless motor gearbox as claimed in claim 1, wherein: the planetary gears are provided with three groups and are distributed at equal angles of 120 degrees.

9. A brushless motor gearbox as claimed in claim 1, wherein: the outer side wall of the inner gear ring is provided with a first clamping structure, and the inner wall of the stator assembly is provided with a second clamping structure matched with the first clamping structure.