Novel support assembly structure of ground treasure hub driving motor

Abstract

The utility model discloses a novel support assembly structure of a ground treasure hub driving motor, which comprises a rotor casing, magnetic steel, a stator core, a rear cover and a stator support are sequentially arranged in an inner cavity of the rotor casing, a winding is arranged on the stator core, and the stator core is connected with the stator support in a clamping manner. The beneficial effects of the utility model are that the stator support claw buckle is connected and fixed with the stator iron core groove, the axial clearance of the double bearings is adjusted through the spring, the yoke part of the stator iron core is provided with the open slot, the PCB assembly is fixed through the stress deformation of the open slot, and the PCB assembly forms axial positioning through the positioning seat boss. And the process cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of hub motor brackets, in particular to a novel bracket assembly structure of a Deebao hub drive motor. Background Art

[0002] Currently, the drive or walking motors used in the home appliance industry or cleaning robot industry have complex assembly structures, cumbersome processes, low production efficiency, and are not easy to automate. The original drive wheel hub motor assembly structure is as follows;

[0003] The current industry's stator bracket assembly method mainly involves vertically placing the stator bracket into the inner hole of the stator core and using a tool to press it into the specified size. Due to the clearance fit, the stator bracket and core assembly requires additional glue, which takes a long time to cure and has the risk of glue overflow. It also poses a potential corrosion risk to the enameled wire and core, resulting in the risk of conduction between the enameled wire and the core, which can easily cause problems such as withstand voltage and high leakage current.

[0004] Currently, the main installation method of wave washers in the industry is to install them in conjunction with the bearing chamber. However, this method is prone to deviation and misalignment, which may cause the risk of damaging the bearing, vibration, noise, and current, and reduce the bearing life.

[0005] Another common assembly method in the industry is to fasten the PCB assembly and bracket with screws and glue. However, this method has low production efficiency and is prone to missing screws, which can cause screws to fall into the stator and rotor, causing vibration, motor jamming, and other problems, leading to motor failure. Furthermore, the raw material and process costs are high. Utility Model Content

[0006] The purpose of the present utility model is to provide a novel bracket assembly structure for a Deebao hub drive motor to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new bracket assembly structure for a Deebao hub drive motor, comprising a rotor casing, wherein a magnet, a stator core, a rear cover and a stator bracket are sequentially arranged in the inner cavity of the rotor casing, a winding is provided on the stator core, and the stator core is clamped and connected to the stator bracket.

[0008] For further optimization, a motor shaft is inserted into the middle of the stator bracket, and a spring is sleeved on the upper end of the motor shaft.

[0009] For further optimization, the two ends of the motor shaft are respectively provided with a front bearing and a rear bearing.

[0010] For further optimization, the other end of the magnetic steel close to and away from the stator core is provided with a PCB assembly and a magnetic ring in sequence.

[0011] For further optimization, an oil seal is provided between the rear cover and the rotor housing.

[0012] For further optimization, a retaining spring is provided at the upper end of the spring away from the motor shaft.

[0013] For further optimization, the PCB assembly and the end surface of the stator bracket are both provided with corresponding positioning holes, and the end surface of the PCB assembly is also provided with a fool-proof positioning column.

[0014] For further optimization, the outer edge of the stator bracket and the inner side of the stator core are provided with a plurality of corresponding claws and buckling positions.

[0015] Beneficial effects

[0016] The utility model provides a new bracket assembly structure for the Deebao hub drive motor. The stator bracket claws are fixed by connecting with the stator core grooves. The double bearings adjust the axial clearance through springs. The stator core yoke has an open groove. The PCB assembly is fixed by the force deformation of the open groove. The PCB assembly is axially positioned by the positioning seat boss. It has the advantages of more secure fixation of the motor body structure, high production efficiency and low process cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the PCB assembly installation structure of the present utility model;

[0019] Figure 3 This is a schematic diagram of the assembly structure of the stator bracket and the stator core of the utility model;

[0020] Figure 4 It is a schematic cross-sectional view of the overall structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the assembly of the spring, motor shaft and stator bracket of the utility model. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] Example

[0024] like Figure 1-5As shown, a new bracket assembly structure of a Deebao hub drive motor includes a rotor housing 13. The inner cavity of the rotor housing 13 is provided with a magnet 10, a stator core 9, a back cover 2 and a stator bracket 1 in sequence. The stator core 9 is provided with a winding 8, and the stator core 9 is snap-connected to the stator bracket 1.

[0025] In this embodiment, a motor shaft 14 is inserted into the middle of the stator bracket 1, a spring 6 is mounted on the upper end of the motor shaft 14, and a front bearing 7 and a rear bearing 5 are mounted on both ends of the motor shaft 14 respectively. The springs simultaneously support the inner rings of the front and rear bearings. Reasonable tolerance design ensures the preload force of the spring 14. The corrugated washer is eliminated and replaced with a spring assembly. The process is simple and easy to operate. The spring is inserted into the motor shaft to ensure the concentricity of the spring and the bearing.

[0026] A PCB assembly 11 and a magnetic ring 12 are sequentially provided on the other end of the magnet 10 close to and away from the stator core 9 .

[0027] An oil seal 3 is provided between the rear cover 2 and the rotor housing 13 , and a retaining spring 4 is provided at the upper end of the spring 6 away from the motor shaft 14 .

[0028] The PCB assembly 11 and the stator bracket 1 are both provided with corresponding positioning holes 15 on their end faces. Furthermore, the PCB assembly 11 is also provided with foolproof positioning posts 16 on its end face. The PCB board is positioned in the plane by the positioning posts on the base. The stator core yoke is slotted for axial and circumferential positioning, eliminating the need for screws, glue, and locking processes.

[0029] Compared with the original assembly method, this structural assembly saves screws, glue materials and operating procedures, and can effectively avoid missing screws, screws sucked into the stator and rotor, causing motor jamming, abnormal noise and other hidden dangers. At the same time, this structure is easy to automate production, saving process, raw materials, labor and other costs.

[0030] The outer edge of the stator bracket 1 and the inner side of the stator core 9 are provided with a plurality of corresponding claws 17 and locking positions 18. The bracket is pressed into the core to prevent circumferential displacement, and the bracket is locked into the core to prevent axial displacement. This structure replaces glue fixation, saves glue material and the process of coating the outer ring of the bracket with glue and static curing, and completely solves the corrosion risk caused by glue overflow. The structure is simple, can effectively optimize the process, save raw materials and labor costs.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A novel bracket assembly structure for a Deebao hub drive motor, characterized by: The invention comprises a rotor casing (13), wherein a magnetic steel (10), a stator core (9), a rear cover (2) and a stator bracket (1) are sequentially arranged in the inner cavity of the rotor casing (13), a winding (8) is arranged on the stator core (9), and the stator core (9) is connected to the stator bracket (1) by snap-fitting.

2. The novel bracket assembly structure of the Deebao hub drive motor according to claim 1 is characterized in that: A motor shaft (14) is inserted into the middle of the stator bracket (1), and a spring (6) is sleeved on the upper end of the motor shaft (14).

3. The novel bracket assembly structure of the Deebao hub drive motor according to claim 2 is characterized in that: The two ends of the motor shaft (14) are respectively fitted with a front bearing (7) and a rear bearing (5).

4. The novel bracket assembly structure of the Deebao hub drive motor according to claim 1 is characterized in that: The magnetic steel (10) is provided with a PCB assembly (11) and a magnetic ring (12) in sequence at the other end thereof, close to and away from the stator core (9).

5. The novel bracket assembly structure of the Deebao hub drive motor according to claim 1 is characterized in that: An oil seal (3) is provided between the rear cover (2) and the rotor housing (13).

6. The novel bracket assembly structure of the Deebao hub drive motor according to claim 2 is characterized in that: A retaining spring (4) is provided at the upper end of the spring (6) away from the motor shaft (14).

7. The novel bracket assembly structure of the Deebao hub drive motor according to claim 4 is characterized in that: The PCB assembly (11) and the stator bracket (1) end surfaces are both provided with corresponding positioning holes (15), and the PCB assembly (11) end surface is also provided with a foolproof positioning column (16).

8. The novel bracket assembly structure of the Deebao hub drive motor according to claim 1 is characterized in that: A plurality of corresponding claws (17) and buckling positions (18) are provided on the outer edge of the stator bracket (1) and the inner side of the stator core (9).

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