Stator assembly structure and motor structure

Abstract

The utility model discloses a stator assembly structure and a motor structure, comprising an injection molding housing and a stator winding arranged in the injection molding housing, the axis of the injection molding housing is provided with a shaft hole penetrating through the injection molding housing up and down, and the injection molding housing at the upper and lower ends of the shaft hole is internally provided with bearing installation cavities. And the shaft hole and the bearing mounting cavity are coaxially arranged. According to the utility model, the injection molding shell is subjected to injection molding, and the shaft hole and the bearing mounting cavity are defined in the injection molding shell, so that the installation of the bearing and the rotating shaft is realized, the assembly process and the number of parts are effectively optimized, the assembly efficiency can be effectively improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to a stator component structure and a motor structure. Background Art

[0002] Prior art, such as the Chinese utility model patent document with publication number CN205945461 U, discloses a plastic packaging structure for an outer rotor motor, comprising a winding stator, a plastic packaging body provided on the winding stator, a first stretch cover and a second stretch cover provided on the plastic packaging body, both of which are fixedly connected to the plastic packaging body, an injection-molded stator sleeved on the outside of the winding stator, and the injection-molded stator fixedly connected to the winding stator. The utility model first fixes and positions the manufactured winding stator, the first stretch cover and the second stretch cover, then forms a plastic packaging body through a plastic packaging device to fix the winding stator, the first stretch cover and the second stretch cover together, and uses the first stretch cover and the second stretch cover as bearing seats, which can effectively ensure coaxiality.

[0003] Based on the above, in the prior art, a first stretch cover and a second stretch cover are provided to fix the bearing. This structural arrangement not only requires the two stretch covers to be placed in the mold for injection molding during the injection molding process, but also has the problems of multiple steps and high component costs, which needs further improvement. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention proposes a stator assembly structure and a motor structure.

[0005] A stator assembly structure designed for this purpose includes an injection-molded shell and a stator winding arranged in the injection-molded shell. An axial hole is provided at the axis center of the injection-molded shell, passing through the injection-molded shell up and down. Bearing mounting cavities are provided in the injection-molded shell at the upper and lower ends of the axial hole. The axial hole and the bearing mounting cavity are coaxially arranged with each other.

[0006] Preferably, the injection-molded housing is formed by BMC injection molding.

[0007] A motor structure includes an outer rotor assembly and a stator assembly, wherein the stator assembly includes an injection-molded shell and a stator winding arranged in the injection-molded shell. An axial hole is provided at the axis center of the injection-molded shell, which passes through the injection-molded shell vertically. Bearing mounting cavities are provided in the injection-molded shell at the upper and lower ends of the axial hole. The axial hole and the bearing mounting cavity are coaxially arranged with each other.

[0008] Preferably, the outer rotor assembly includes a rotor winding rotatably arranged outside the stator assembly, the rotor winding is fixedly connected to the rotor housing, the rotor housing is fixedly connected to the rotating shaft, and the rotating shaft extends into the shaft hole and extends into the upper and lower bearing mounting cavities;

[0009] A bearing is arranged in the bearing installation cavity, and an inner ring of the bearing is connected to the rotating shaft.

[0010] Compared to the prior art, the present invention features an axial hole extending vertically through the injection-molded housing at its axis, and bearing mounting cavities located within the injection-molded housing at both ends of the axial hole. The axial hole and the bearing mounting cavities are coaxially arranged. The present invention utilizes an injection-molded housing with the axial hole and bearing mounting cavities defined within it to facilitate the installation of the bearing and the rotating shaft. This effectively optimizes the assembly process and the number of parts, thereby improving assembly efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of the cross-sectional structure of the stator assembly;

[0012] Figure 2 This is one of the three-dimensional structural diagrams of the stator assembly;

[0013] Figure 3 This is the second schematic diagram of the three-dimensional structure of the stator assembly;

[0014] Figure 4 Schematic diagram of the three-dimensional structure of the motor;

[0015] Figure 5 Schematic diagram of the cross-sectional structure of the motor. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] See also Figure 1-Figure 5 A stator assembly structure includes an injection-molded shell 10 and a stator winding 20 arranged in the injection-molded shell 10. An axial hole 120 is provided at the axis center of the injection-molded shell 10, which passes through the injection-molded shell 10 vertically. Bearing mounting cavities 110 are provided in the injection-molded shell 10 at the upper and lower ends of the axial hole 120. The axial hole 120 and the bearing mounting cavity 110 are coaxially arranged with each other.

[0018] The utility model is injection molded by injection molding the shell and defines the shaft hole and the bearing installation cavity inside to realize the installation of the bearing and the rotating shaft, effectively optimizes the assembly process and the number of parts, and can effectively improve the assembly efficiency and reduce the production cost.

[0019] In the present invention, the injection-molded housing 10 is formed by BMC injection molding, which has the advantages of low material cost, high strength, and good stator insulation performance.

[0020] In the present invention, the bearing installation cavity 110 and the shaft hole 120 are injection molded using the same mold core. The use of the mold core can ensure the concentricity of the shaft hole 120 and the bearing installation cavity 110.

[0021] See also Figure 4 and Figure 5 A motor structure includes an outer rotor assembly and a stator assembly, wherein the stator assembly includes an injection-molded shell 10 and a stator winding 20 arranged in the injection-molded shell 10. An axial hole 120 is provided at the axis center of the injection-molded shell 10, which passes through the injection-molded shell 10 vertically. Bearing mounting cavities 110 are provided in the injection-molded shell 10 at the upper and lower ends of the axial hole 120. The axial hole 120 and the bearing mounting cavity 110 are coaxially arranged with each other.

[0022] See also Figure 5 , including an outer rotor assembly including a rotor winding 30 rotatably disposed outside the stator assembly, the rotor winding 30 being fixedly connected to a rotor housing 310, the rotor housing 310 being fixedly connected to a rotating shaft 40, the rotating shaft 40 extending into the shaft hole 120 and into the upper and lower bearing mounting cavities 110;

[0023] A bearing 50 is disposed in the bearing installation cavity 110 , and an inner ring of the bearing 50 is connected to the rotating shaft 40 .

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A stator assembly structure, comprising an injection molded housing (10) and a stator winding (20) disposed within the injection molded housing (10), characterized in that: An axial hole (120) is provided at the axis center of the injection molded housing (10) and passes through the injection molded housing (10) vertically. Bearing mounting cavities (110) are provided in the injection molded housing (10) at the upper and lower ends of the axial hole (120). The axial hole (120) and the bearing mounting cavity (110) are coaxially arranged with each other.

2. A stator assembly structure according to claim 1, characterized in that: The injection-molded housing (10) is formed by BMC injection molding.

3. A motor structure comprising an outer rotor assembly and a stator assembly, wherein the stator assembly comprises an injection molded housing (10) and a stator winding (20) disposed within the injection molded housing (10), characterized in that: An axial hole (120) is provided at the axis center of the injection molded housing (10) and passes through the injection molded housing (10) vertically. Bearing mounting cavities (110) are provided in the injection molded housing (10) at the upper and lower ends of the axial hole (120). The axial hole (120) and the bearing mounting cavity (110) are coaxially arranged with each other.

4. The motor structure according to claim 3, characterized in that: The outer rotor assembly includes a rotor winding (30) rotatably arranged outside the stator assembly, the rotor winding (30) is fixedly connected to a rotor housing (310), the rotor housing (310) is fixedly connected to a rotating shaft (40), and the rotating shaft (40) extends into the shaft hole (120) and into upper and lower bearing mounting cavities (110); A bearing (50) is arranged in the bearing installation cavity (110), and the inner ring of the bearing (50) is connected to the rotating shaft (40).

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