Spoke motor

Abstract

The utility model relates to the technical field of motor equipment, and provides a spoke motor, which comprises a hub and a hub shaft arranged at the axis of the hub, and comprises a sun gear with a central hole in the center and fixedly connected with the hub shaft in a sleeving manner; a plurality of planet gears, each of which is engaged with the sun gear and rotates around the sun gear; the planet carrier is used for supporting the planet wheel, so that the planet wheel can rotate relative to the sun wheel; the inner gear ring is provided with inner teeth and is kneaded with each planet wheel; and the external member is arranged on the inner wall of the hub to form a cavity for accommodating the inner gear ring. By integrating the planetary gear on the rotor, higher torque and power output can be realized in the same volume, so that the power density is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a spoke motor. Background Art

[0002] The spoke motor is a special type of motor, mainly used in electric bicycles, and its design is inspired by the spoke structure of bicycle wheels. In this motor, permanent magnets or electromagnetic coils are arranged around the central hub of the motor, similar to the spokes of a bicycle wheel. The compact design of the spoke motor makes it suitable for applications with limited space. However, it is precisely because of the compact design that the size of its internal coils, magnets, etc. will be limited in the case of limited space, which in turn affects the output torque. For this reason, we propose a spoke motor. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides a spoke motor, which overcomes the deficiencies of the prior art, has a reasonable design, a compact structure, and solves the problems raised in the background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A spoke motor includes a hub and a hub shaft arranged at the hub axis, including:

[0008] The sun gear has a center hole at its center and is sleeved and fixed with the hub shaft;

[0009] A plurality of planetary gears, each planetary gear meshes with the sun gear and rotates around the sun gear;

[0010] A planet carrier, used to support the planetary gears so that the planetary gears can rotate relative to the sun gear;

[0011] An internal gear ring with internal teeth, engaged with each planetary gear;

[0012] The kit is arranged on the inner wall of the wheel hub to form a chamber for accommodating the inner gear ring.

[0013] Preferably, the planet carrier is provided with a plurality of planet shafts, each of which supports a planet gear.

[0014] Preferably, it also includes a transmission system, which is used to adjust the speed and direction of power transmission.

[0015] Preferably, the transmission system comprises:

[0016] The stator is attached to the inner wall of the hub circumferentially and forms a circle;

[0017] The rotor is sleeved on the hub shaft, and the arc-shaped side surface of the rotor corresponds to the inner surface of the stator.

[0018] Preferably, the rotor has a plurality of windings for cutting the magnetic field.

[0019] Preferably, the stator comprises permanent magnets interacting with the windings of the rotor.

[0020] Preferably, protrusions are arranged side by side on the arc-shaped side surfaces of the rotor.

[0021] (III) Beneficial effects

[0022] The embodiment of the utility model provides a spoke motor having the following beneficial effects:

[0023] 1. By integrating planetary gears on the rotor and closely cooperating with the sun gear, multiple planetary gears, and planet carrier, higher torque and power output can be achieved in the same volume, thereby improving power density. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 For this utility model Figure 1 Schematic diagram of the side opening;

[0026] Figure 3 For this utility model Figure 2 A three-dimensional schematic diagram of

[0027] Figure 4 For this utility model Figure 2 A partial three-dimensional schematic diagram of

[0028] Figure 5 For this utility model Figure 1 Partial schematic diagram.

[0029] In the figure: 1, wheel hub; 11, kit; 12, stator; 13, rotor; 2, wheel hub shaft; 3, inner ring gear; 31, planetary gear; 32, planetary shaft; 33, sun gear; 34, planetary carrier. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See attached Figure 1-5 A spoke motor comprises a hub 1 and a hub shaft 2 arranged at the axis of the hub 1, characterized in that:

[0032] The sun gear 33 has a center hole at its center, and the center hole is sleeved and fixed with the hub shaft 2;

[0033] A plurality of planetary gears 31, each of which is meshed with a sun gear 33 and rotates around the sun gear 33;

[0034] Planet carrier 34, planet carrier 34 is sleeved on hub shaft 2, multiple planet shafts 32 are arranged on the same side of planet carrier 34, each planet wheel 31 is sleeved on planet shaft 32 through bearings, forming a support function, so that planet wheel 31 can rotate relative to sun wheel, which helps to reduce vibration and noise, and can also distribute load on multiple contact points, so that it is evenly distributed instead of concentrated on a few points. This can reduce the stress of a single gear and improve the load-bearing capacity and durability of the entire gear system;

[0035] The kit 11 is arranged on the inner wall of the hub 1 to form a chamber for accommodating the inner gear ring 3. A plurality of flanges are provided around the inner wall of the hub 1. The flanges are sleeved with the same annular sheet and form a chamber for accommodating the inner gear ring 3 with 1. The inner gear ring 3 has internal teeth and is kneaded with each planetary gear 31 to reduce impact and vibration and achieve smoother operation.

[0036] In this embodiment, a transmission system is also included, and the transmission system is used to adjust the speed and direction of power transmission.

[0037] In this embodiment, the transmission system includes:

[0038] The stator 12 is circumferentially attached to the inner wall of the hub 1 and forms a circle;

[0039] The rotor 13 is sleeved on the hub shaft 2 , and the arc-shaped side surface of the rotor 13 corresponds to the inner surface of the stator 12 .

[0040] In this embodiment, the rotor 13 has a plurality of windings for cutting the magnetic field.

[0041] In this embodiment, the stator 12 includes permanent magnets that interact with the windings of the rotor 13 .

[0042] In this embodiment, micro protrusions are arranged side by side on the arc-shaped side surface of the rotor 13 to concentrate the magnetic field lines and enhance the magnetic field strength.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spoke motor, comprising a hub (1) and a hub shaft (2) arranged at the axis of the hub (1), characterized in that: include: The sun gear (33) has a center hole at its center and is sleeved and fixed to the hub shaft (2); A plurality of planetary gears (31), each planetary gear (31) meshing with a sun gear (33) and rotating around the sun gear (33); A planet carrier (34) for supporting the planetary gear (31) so that the planetary gear (31) can rotate relative to the sun gear; An inner gear ring (3) having inner teeth and engaging with each planetary gear (31); The sleeve (11) is arranged on the inner wall of the wheel hub (1) to form a chamber for accommodating the inner gear ring (3).

2. A spoke motor according to claim 1, characterized in that: The planet carrier (34) is provided with a plurality of planet shafts (32), and each planet shaft (32) supports a planet wheel (31).

3. A spoke motor according to claim 1, characterized in that: It also includes a transmission system, which is used to adjust the rate and direction of power transmission.

4. A spoke motor as claimed in claim 3, characterized in that: The transmission system comprises: The stator (12) is circumferentially attached to the inner wall of the hub (1) and forms a circle; The rotor (13) is sleeved on the hub shaft (2), and the arc-shaped side surface of the rotor (13) corresponds to the inner surface of the stator (12).

5. A spoke motor as claimed in claim 4, characterized in that: The rotor (13) has a plurality of windings for cutting a magnetic field.

6. A spoke motor as claimed in claim 4, characterized in that: The stator (12) comprises permanent magnets which interact with the windings of the rotor (13).

7. A spoke motor as claimed in claim 4, characterized in that: Protrusions are also arranged side by side on the arc-shaped side surface of the rotor (13).

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