CN218416088U

CN218416088U - Single-layer gear planetary transmission inner rotor hub motor

Info

Publication number: CN218416088U
Application number: CN202221999831.0U
Authority: CN
Inventors: 沈国栋; 杨雪东
Original assignee: Acma Electric Drive System Suzhou Co ltd
Current assignee: Acma Electric Drive System Suzhou Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2023-01-31
Anticipated expiration: 2032-08-01

Abstract

The utility model provides an individual layer gear planetary drive inner rotor wheel hub motor, it is including the assembly shell, the fixed outer stator that is equipped with on the assembly shell inner wall, outer stator internal assembly has the inner rotor, the fixed left side lid that is equipped with of assembly shell side, the left side is covered and is fixed with the left axletree, the outside rotatable wheel hub shell that is equipped with of assembly shell, the fixed right shell that is equipped with in wheel hub shell right side, wheel hub shell right side inner wall processing has the internal thread, the right side shell pass through the external screw thread of left side wall with wheel hub shell screw assembly, the right side shell passes through bearing and right axletree assembly. The single-layer gear planetary transmission inner rotor hub motor is mainly used in an electric power-assisted bicycle, a hub shell and a right shell of the motor are directly assembled in a rotating mode through threads, the assembling process is faster, and meanwhile, a threaded structure for assembly is arranged inside the shell, so that the hub motor is more attractive in appearance.

Description

Single-layer gear planetary transmission inner rotor hub motor

Technical Field

The utility model belongs to the technical field of bicycle and transmission, concretely relates to individual layer gear planetary transmission inner rotor wheel hub motor.

Background

An inner rotor hub motor is disclosed in the patent with the publication number 106100218A, which adopts a planetary transmission structure, and a hub shell for driving a wheel to rotate adopts a structure that a left piece and a right piece are fixedly connected. Simultaneously in order to guarantee that two metal ring shapes of in-wheel motor assembly electric bicycle spoke position are on same part, the connection width of wheel casing one side is narrower, and this just makes as the internal tooth width in the above-mentioned patent is narrower to make gear transmission meshing flank of tooth contact surface less, thereby make wearing and tearing great, reduced the life of motor.

In addition, the motor disclosed by the patent adopts a shaft end outgoing line, so that the size of the shaft end of the hub motor is compact, other assembly structures are inconvenient to arrange, and the strength of the axle is reduced by perforating from the axle position; when this kind of structure is used in the motor of outer stator inner rotor simultaneously, because the circuit needs stretch to the outside position that needs insert outer stator from the motor intermediate position, whole circuit is arranged the overlength, and the circuit is arranged comparatively difficultly.

SUMMERY OF THE UTILITY MODEL

To above problem, the utility model provides a simple structure, the inside planetary drive structure that adopts of motor, the internal gear carries out the individual layer gear planetary drive inner rotor wheel hub motor that fixes on the boundary case.

The utility model provides a technical scheme that its technical problem adopted is: this individual layer gear planetary transmission inner rotor wheel hub motor is including the assembly shell, fixed assembly has outer stator on the assembly shell inner wall, outer stator internal assembly has the inner rotor, the assembly shell side is fixed with the left side lid, the left side is covered and is fixed with the left axletree, the assembly shell outside rotatable assembly has the wheel hub shell, the wheel hub shell right side is fixed to be equipped with right shell, wheel hub shell right side inner wall processing has the internal thread, right shell pass through the external screw thread of left wall with wheel hub shell screw assembly, the right shell passes through bearing and right axletree assembly.

Preferably, a central shaft is designed in the middle of the inner rotor, the central shaft extends to the right, external teeth are designed on the part of the central shaft extending to the right, a single-layer planetary gear is meshed on the external teeth of the central shaft, an internal gear ring is fixedly assembled on the left side of the right shell, and internal teeth meshed with the planetary gear for transmission are designed on the internal gear ring.

Preferably, the left side cover and the left axle are integrally formed.

Preferably, a through hole is designed in the left cover, an electric wire penetrates through the through hole, and the electric wire is connected to the outer stator.

Preferably, the side cover and the hub shell are assembled through a bearing.

The beneficial effects of the utility model reside in that: the single-layer gear planetary transmission inner rotor hub motor is mainly used in an electric power-assisted bicycle, a hub shell and a right shell of the motor are directly assembled in a rotating mode through threads, the assembling process is faster, and meanwhile, a threaded structure for assembly is arranged inside the shell, so that the hub motor is more attractive in appearance.

Drawings

Fig. 1 is a schematic sectional structure diagram of an inner rotor hub motor in single-layer gear planetary transmission.

Fig. 2 is a schematic perspective view of the engagement assembly of the inner ring gear and the planetary gear.

Detailed Description

The invention will be further illustrated with reference to the following examples:

the directional terms left, right, etc. in the present embodiment are for the directions shown in fig. 1.

In the embodiment shown in fig. 1, the single-layer gear planetary transmission inner rotor hub motor comprises an assembly shell 1, wherein an outer stator 2 is fixedly assembled on the inner wall of the assembly shell 1, an inner rotor 3 is assembled inside the outer stator 2, a left side cover 4 is fixedly assembled on the side surface of the assembly shell 1, a left axle 41 is fixed on the left side cover 4, a hub shell 5 is rotatably assembled outside the assembly shell 1, a right shell 51 is fixedly assembled on the right side of the hub shell 5, an inner thread is processed on the right side inner wall of the hub shell 5, the right shell 51 is in threaded assembly with the hub shell 5 through the outer thread of the left side wall, and the right shell 51 is assembled with a right axle 6 through a bearing.

This individual layer gear planetary drive inner rotor wheel hub motor mainly uses in electric bicycle, through the direct rotatory assembly of screw thread between the wheel hub shell 5 of this motor and the right shell 51, and the assembly process is more swift, and the helicitic texture of assembling usefulness is inside the casing simultaneously, and the assembly structure is realized hiding for the appearance of this wheel hub motor is more pleasing to the eye.

As shown in fig. 1 and fig. 2, a central shaft 31 is designed in the middle of the inner rotor 3, the central shaft 31 extends to the right, external teeth are designed on a part of the central shaft 31 extending to the right, a single-layer planetary gear 7 is meshed with the external teeth of the central shaft 31, and the planetary gear 7 is assembled and connected with the assembly shell 1 through a middle planetary shaft. An inner gear ring 8 is fixedly assembled on the left side of the right shell 51, and inner teeth which are in meshing transmission with the planetary gears 7 are designed on the inner gear ring 8. Like this the design of interior ring gear 8 for the relative right shell 51 of internal tooth structure designs alone, and the flank width is bigger, and the meshing effect is better, guaranteed simultaneously right shell 51 with direct threaded connection between the assembly shell 1.

In specific design, as shown in fig. 1, the left side cover 4 is integrally formed with the left axle 41. In this way, the edge cover 4 is used directly as a flange structure, so that the left axle 41 is more robust in the motor. Meanwhile, a through hole 42 is designed on the left side cover 4, a power connection wire 9 penetrates through the through hole 42, and the power connection wire 9 is connected to the outer stator 2. Through-hole 42 has guaranteed left axletree 41 intensity beside left axletree 41, makes simultaneously to connect after electric wire 9 gets into the motor from the outside, is connected to the circuit of 2 parts of outer stator is shorter, arranges more convenience, has practiced thrift circuit materials. The design of the motor side cover 4 is thus an outlet, which generally improves the strength of the motor shaft 41 and the stability of the electrical connection of the lines.

In a specific design, as shown in fig. 1, the side cover 4 and the hub shell 5 are assembled through a bearing. Therefore, the hub shell 5 and the right shell 51 rotate coaxially relative to the left axle 41 and the right axle 6, and the side cover 4 and the left axle 41 are integrally processed, so that the coaxiality of the hub motor during operation is ensured, and the hub motor operates more stably.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A single-layer gear planetary transmission inner rotor hub motor comprises an assembly shell (1), wherein an outer stator (2) is fixedly assembled on the inner wall of the assembly shell (1), an inner rotor (3) is assembled in the outer stator (2), a left side cover (4) is fixedly assembled on the side surface of the assembly shell (1), a left axle (41) is fixed on the left side cover (4), a hub shell (5) is rotatably assembled outside the assembly shell (1), and a right shell (51) is fixedly assembled on the right side of the hub shell (5); the method is characterized in that: the hub shell (5) right side inner wall is processed with the internal thread, right side shell (51) through the left side wall the external thread with hub shell (5) screw assembly, right side shell (51) through the bearing with right axletree (6) assembly.

2. The single layer geared planetary drive inner rotor hub motor of claim 1, wherein: the utility model discloses a portable electric vehicle, including inner rotor (3), inner rotor (3) middle design has center pin (31), center pin (31) stretches out to the right, the part design that center pin (31) stretched out to the right has the external tooth, it has individual layer planetary gear (7) to mesh on the external tooth of center pin (31), the left side fixed mounting of right side shell (51) has interior ring gear (8), interior ring gear (8) go up the design have with planetary gear (7) meshing transmission's internal tooth.

3. The single layer geared planetary drive inner rotor hub motor of claim 1, wherein: the left side cover (4) and the left axle (41) are integrally processed.

4. The single layer geared planetary drive inner rotor hub motor of claim 3, wherein: the design has through-hole (42) on left side lid (4), it has electric wire (9) to pass in through-hole (42), electric wire (9) are connected to on outer stator (2).

5. The single layer geared planetary drive inner rotor hub motor of claim 3, wherein: the side cover (4) and the hub shell (5) are assembled through a bearing.