Motor capable of accelerating heat dissipation and saving space

Abstract

The utility model relates to the technical field of hub motors, in particular to a motor capable of accelerating heat dissipation and saving space. The outer shell is formed by assembling a hub shell and an end cover, the main shaft is arranged in the outer shell in a penetrating mode, and the clutch assembly and the motor assembly are arranged in the outer shell and arranged on the main shaft in a sleeving mode. According to the technical scheme, the stator iron core is arranged in the groove of the rotor, so that the heat dissipation holes are formed in one side of the stator iron core, the redundant space is formed in the other side of the stator iron core, enough space is provided for heat dissipation, heat is dissipated from the heat dissipation holes in the other side of the stator iron core, heat dissipation is accelerated, and the overall space is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of hub motors, and in particular to a motor capable of accelerating heat dissipation and saving space. Background Art

[0002] The hub motor is a motor designed by integrating the vehicle's power system, transmission system, and braking system.

[0003] Today's society has increasingly stringent environmental protection requirements, and pollution-free electric vehicles are becoming increasingly popular. As a result, the demand for electric vehicle motors has also increased, and the technical requirements for motors have also continued to increase. Currently, the most widely used electric motors are hub-type.

[0004] In the prior art, the axial magnetic circuit dual-drive brushless gearless DC hub motor with application number CN200520044936.0 has a relatively small structure. Therefore, when rotating, huge heat is generated inside, resulting in high surface heat and poor heat dissipation effect.

[0005] Therefore, it is necessary to design a motor that can accelerate heat dissipation and save space to solve the above problems. Utility Model Content

[0006] The purpose of the present invention is to provide a motor that can accelerate heat dissipation and save space, so as to overcome the above-mentioned deficiencies in the current prior art.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A motor capable of accelerating heat dissipation and saving space, comprising an outer shell assembled from a hub shell and an end cover, a main shaft penetrating the outer shell, and a clutch assembly and a motor assembly placed in the outer shell and sleeved on the main shaft, wherein the hub shell and the end cover are respectively mounted on the main shaft through bearings, and is characterized in that: the outer shaft of the main shaft is provided with a sun gear, the clutch assembly is installed in conjunction with the sun gear, the motor assembly comprises a third bearing sleeved on the main shaft through a first retaining spring, and a rotor sleeved outside the third bearing, a groove for mounting a stator core is provided on the rotor, and a heat dissipation hole is provided on the corresponding side of the groove, an aluminum bracket is mounted on the main shaft through a flat key, a stator core is mounted on the end of the aluminum bracket, and the stator core is placed in the groove of the rotor, and an enameled wire winding is wound around the stator core.

[0009] Preferably, the clutch assembly includes a clutch sleeved outside the main shaft and arranged on one side of the sun gear, a second bearing installed in conjunction with one end of the clutch, a nylon gear installed in conjunction with the second bearing, and an inner gear ring arranged in conjunction with the nylon gear.

[0010] Preferably, the sun gear is fixed to the rotor by screws; and a magnetic steel is glued to the inner wall of the groove of the rotor by anaerobic glue.

[0011] Preferably, the stator core portion is arranged corresponding to the end cover, and a speed measuring magnet is also arranged on the inner wall of the end cover. The speed measuring magnet is arranged horizontally corresponding to the stator core; the horizontal surface of the magnet is arranged corresponding to the outer wall of the side of the stator core.

[0012] Preferably, a gap is provided between the stator core and the end cover.

[0013] The beneficial effect of the present invention is that the stator core is placed in the groove of the rotor in this technical solution, so one side of the stator core is a heat dissipation hole and the other side is redundant space, so there is enough space for heat dissipation, and the other side dissipates heat from the heat dissipation hole, thereby accelerating heat dissipation and saving overall space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of a motor that can accelerate heat dissipation and save space according to the utility model;

[0015] Figure 2 This is a schematic diagram of an enameled wire winding method for a motor that can accelerate heat dissipation and save space;

[0016] Figure 3 This is a plan view of an enameled wire winding method for a motor that can accelerate heat dissipation and save space; DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0019] Reference Figure 1A motor capable of accelerating heat dissipation and saving space, comprising an outer shell assembled from a hub shell 1 and an end cover 19, a main shaft 23 disposed within the outer shell, and a clutch assembly and a motor assembly disposed within the outer shell and sleeved on the main shaft;

[0020] The hub housing 1 and the end cap 19 are respectively mounted on the main shaft 23 via bearings. An oil seal 15 is further disposed between the outer end of the end cap 19 and the main shaft. Furthermore, the oil seal can be positioned between the hub housing 1 and the main shaft 23, allowing the oil seal to be disposed within the hub motor without changing the motor's gear shift, thereby achieving high sealing performance. Furthermore, the built-in oil seal assembly protects the oil seal and reduces damage to the oil seal from sunlight, strong winds, dust, and the like, thereby extending its service life.

[0021] The outer shaft of the main shaft 3 is provided with a sun gear 7, and the clutch assembly is installed in conjunction with the sun gear;

[0022] The clutch assembly includes a clutch 5 sleeved on the outside of the main shaft 23 and arranged on one side of the sun gear 7, a second bearing 4 mounted on one end of the clutch 7, a nylon gear 3 mounted on the second bearing 4, and an inner gear 2 arranged to match the nylon gear 3;

[0023] The motor assembly includes a third bearing 8 mounted on the main shaft 23 via a first retaining spring 21, and a rotor 9 mounted outside the third bearing 8. The rotor 9 is provided with a groove for mounting a stator core, and a heat dissipation hole 91 is provided on one side of the groove. During the rotation of the rotor, heat is generated inside the stator and dissipated through the heat dissipation hole 91, thereby reducing the temperature.

[0024] The sun gear 7 is fixed to the rotor 9 by screws; a magnetic steel 10 is adhered to the inner wall of the groove of the rotor 9 by anaerobic adhesive.

[0025] An aluminum bracket 14 is mounted on the main shaft 23 via an A-shaped flat key 18. A stator core 12 is mounted on the end of the aluminum bracket 14, and the stator core 12 is placed in the groove of the rotor 9. The aluminum bracket 14 can be obtained by casting aluminum, and the stator core 12 and the aluminum bracket 14 can be regarded as an integral structure, thereby forming a stator mounting frame. The stator mounting frame is connected to the main shaft 23 via a flat key and can also be regarded as an integral structure.

[0026] The stator core 12 is wound with an enameled wire winding 11. The winding method between the stator and the wire is: This winding method can be: the commonly used 3-phase DC 18-slot motor winding method, with 18 stator slots and 20 magnetic poles, which is also the best slot-to-pole ratio. For details, please refer to Figure 2 The winding diagram and Figure 3The stator core portion corresponds to the end cover 19, and a speed measuring magnetic steel 20 is provided on the inner wall of the end cover 19. The speed measuring magnetic steel 20 is horizontally arranged corresponding to the stator core; the horizontal surface of the magnetic steel 10 corresponds to the outer wall of the side of the stator core; Reference Figure 2 As stated, Figure 2 The end positions of the 1-18 stator slots are in a trapezoidal structure, which is convenient for the accumulation of magnetic flux lines, resulting in crowded magnetic flux lines at the end, high density and high heat generation, which in turn increases the temperature and resistance.

[0027] Since the stator core is placed in the groove of the rotor, one side of the stator core is a heat dissipation hole and the other side is redundant space, so there is enough space for heat dissipation. The heat on the other side is dissipated from the heat dissipation hole, thereby accelerating heat dissipation and saving overall space.

[0028] This scheme operates as follows: When the copper wire wound around the stator is energized, it generates a magnetic field that interacts with the magnetic field on the rotor. The tangential force causes the rotor to move in a circular motion around the main axis. The sun gear is screwed to the rotor. The rotor and sun gear operate at the same speed. The planetary gear structure reduces the speed and increases the torque, allowing the ring gear to output the final speed. The ring gear is press-fitted to the wheel hub, effectively outputting the hub's speed, which in turn drives the wheel through the spokes.

[0029] The benefit of the present invention is that the stator core is placed in the groove of the rotor, so one side of the stator core is a heat dissipation hole and the other side is redundant space, so there is enough space for heat dissipation, and the other side dissipates heat from the heat dissipation hole, thereby accelerating heat dissipation and saving overall space.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A motor capable of accelerating heat dissipation and saving space, comprising an outer housing assembled from a hub shell and an end cap, a main shaft disposed within the outer housing, and a clutch assembly and a motor assembly disposed within the outer housing and sleeved on the main shaft, wherein the hub shell and the end cap are respectively mounted on the main shaft via bearings, and characterized in that: The outer shaft of the main shaft is provided with a sun gear, and the clutch assembly is installed in conjunction with the sun gear. The motor assembly includes a third bearing sleeved on the main shaft through a first retaining spring, and a rotor sleeved outside the third bearing. A groove for mounting the stator core is provided on the rotor, and a heat dissipation hole is provided on the corresponding side of the groove. An aluminum bracket is installed on the main shaft through a flat key, and a stator core is installed at the end of the aluminum bracket. The stator core is placed in the groove of the rotor, and an enameled wire winding is wound around the stator core.

2. The motor capable of accelerating heat dissipation and saving space according to claim 1, characterized in that: The clutch assembly includes a clutch sleeved outside the main shaft and arranged on one side of the sun gear, a second bearing installed in conjunction with one end of the clutch, a nylon gear installed in conjunction with the second bearing, and an inner gear ring arranged in conjunction with the nylon gear.

3. The motor capable of accelerating heat dissipation and saving space according to claim 1, characterized in that: The sun gear is fixed to the rotor via screws; and magnetic steel is adhered to the inner wall of the groove of the rotor via anaerobic adhesive.

4. The motor capable of accelerating heat dissipation and saving space according to claim 1, characterized in that: The stator core portion is arranged corresponding to the end cover, and a speed measuring magnet is also arranged on the inner wall of the end cover. The speed measuring magnet is arranged horizontally corresponding to the stator core; the horizontal surface of the magnet is arranged corresponding to the outer wall of the side of the stator core.

5. The motor capable of accelerating heat dissipation and saving space according to claim 1, characterized in that: A gap is also provided between the stator core and the end cover.

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