Ultra-thin shielded pole motor

Abstract

The utility model provides a kind of ultra-thin shielded motor, including stator assembly, rotor assembly and two supports;Rotor assembly is rotatably arranged in the inside of stator assembly, two supports are symmetrically fixed in the front and back of stator assembly, the both ends of rotating shaft in rotor assembly are rotatably connected with the support of corresponding side through a bearing assembly;The both ends of rotor body axial direction in rotor assembly are provided with recessed cavity, the inside of each support middle part is provided with annular protruding portion, the inside of protruding portion forms annular mounting cavity, each bearing assembly is pressed into mounting cavity in the inside of corresponding support, each protruding portion is inserted in the recessed cavity of corresponding side and cooperates with recessed cavity clearance;The utility model can reduce the thickness of shielded motor, i. e. when shielded motor is applied to the inside of target product, the occupied space of shielded motor can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to an ultra-thin shaded-pole motor. Background Technology

[0002] An electric motor is a drive component used to convert electrical energy into mechanical energy. Currently, shaded-pole motors on the market mainly consist of a stator assembly, a rotor assembly, and two supports. The rotor assembly is rotatably mounted inside the stator assembly, and the two supports are symmetrically fixed on the front and rear sides of the stator assembly. Both ends of the rotating shaft in the rotor assembly are rotatably connected to the corresponding support via a bearing assembly. However, in the existing shaded-pole motor structure, since the supports and bearing assemblies are located entirely outside the rotor and stator assemblies in the axial direction, the shaded-pole motor has the disadvantage of being thick, which means that when the shaded-pole motor is applied inside the target product, it occupies a large amount of space. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an ultra-thin shaded pole motor, which can reduce the thickness of the shaded pole motor, that is, when the shaded pole motor is applied inside the target product, it can reduce the space occupied by the shaded pole motor.

[0004] This utility model provides an ultra-thin shaded-pole motor, including a stator assembly, a rotor assembly, and two supports. The rotor assembly is rotatably disposed inside the stator assembly. The two supports are symmetrically fixed on the front and rear sides of the stator assembly. Both ends of the rotating shaft in the rotor assembly are rotatably connected to the corresponding support via a bearing assembly. Both ends of the rotor body in the rotor assembly have cavities in the axial direction. The inner side of the middle of each support has an annular protrusion. The inner side of the protrusion forms an annular mounting cavity. Each bearing assembly is press-fitted into the mounting cavity inside the corresponding support. Each protrusion is inserted into the corresponding cavity and fits with the cavity with a clearance.

[0005] By adopting the above structure, the present invention allows a portion of the bracket and a portion of the bearing assembly to extend into the inner side of the rotor body in the axial direction under the combined action of the concave cavity and the protruding part, thereby reducing the thickness of the shaded pole motor. In other words, when the shaded pole motor is applied to the interior of the target product, the space occupied by the shaded pole motor can be reduced.

[0006] In one possible implementation, each bracket has two symmetrical connecting lugs on its outer wall, each connecting lug having a connecting hole. The stator assembly has two symmetrical mounting holes. The two connecting holes on each bracket are coaxially aligned with one of the mounting holes. The two brackets are fastened to the stator assembly by bolt assemblies passing through the connecting holes and mounting holes. With this structure, the two brackets can be reliably fixed to the front and rear sides of the stator assembly by the bolt assemblies. Each bolt assembly includes a bolt and a nut. The threaded portion of the bolt passes through the connecting hole and mounting hole, and the nut is threadedly fastened to the threaded portion of the bolt.

[0007] In one possible implementation, each connecting lug has an annular boss on its inner side that is coaxial with the mounting hole on the corresponding side. The annular boss is coaxially inserted into the end of the mounting hole, and the outer peripheral wall of the annular boss fits against the inner peripheral wall of the mounting hole. With this structure, under the cooperative insertion of the annular boss and the mounting hole, the outer peripheral wall of the annular boss fits against the inner peripheral wall of the mounting hole, thereby achieving radial positioning of the annular boss and the mounting hole, that is, achieving the positioning function of the bracket and the stator assembly. This facilitates the assembly of the bracket and the stator assembly, improves the reliability of the bracket and the stator assembly after assembly, and ensures the coaxiality of the bearing assembly and the rotating shaft.

[0008] In one possible implementation, each connecting lug is provided with two symmetrical reinforcing ribs at the connection point with the corresponding bracket. The reinforcing ribs are integrally formed with the connecting lug and the bracket. By adopting this structure, the connection strength between the connecting lug and the bracket can be improved under the action of the reinforcing ribs, that is, the fracture resistance at the connection point between the connecting lug and the bracket can be improved. Thus, under the action of the connecting lug, the bracket can be reliably fixed on the stator assembly. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0010] Figure 2 This is the first cross-sectional structural schematic diagram of this utility model;

[0011] Figure 3 This is a second cross-sectional view of the present invention. Detailed Implementation

[0012] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0013] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0014] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0015] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] See Figure 1-3 As shown in the figure, this application discloses an ultra-thin shaded pole motor, including a stator assembly 1, a rotor assembly 2, and two supports 3. The rotor assembly 2 is rotatably disposed inside the stator assembly 1. The two supports 3 are symmetrically fixed on the front and rear sides of the stator assembly 1. Both ends of the rotating shaft 21 in the rotor assembly 2 are rotatably connected to the corresponding support 3 through a bearing assembly 4. Both ends of the rotor body 22 in the rotor assembly 2 are provided with cavities 221 in the axial direction. The inner side of the middle of each support 3 is provided with an annular protrusion 31. The inner side of the protrusion 31 forms an annular mounting cavity 32. Each bearing assembly 4 is press-fitted into the mounting cavity 32 on the inner side of the corresponding support 3. Each protrusion 31 is inserted into the corresponding cavity 221 and is clearance-fitted with the cavity 221.

[0017] Each bracket 3 has two symmetrical connecting ears 33 on its outer wall, and each connecting ear 33 has a connecting hole 34. The stator assembly 1 has two symmetrical mounting holes 11. The two connecting holes 34 on each bracket 3 are coaxially arranged with one of the mounting holes 11. The two brackets 3 are fastened to the stator assembly 1 by bolt assemblies passing through the connecting holes 34 and the mounting holes 11. With this structure, the two brackets can be reliably fixed to the front and rear sides of the stator assembly by the bolt assemblies. Each bolt assembly includes a bolt and a nut. The threaded part of the bolt passes through the connecting hole and the mounting hole, and the nut is threadedly fastened to the threaded part of the bolt.

[0018] Each connecting lug 33 has an annular boss 35 on its inner side, coaxial with the corresponding mounting hole 11. The annular boss 35 is coaxially inserted into the end of the mounting hole 11, and the outer peripheral wall of the annular boss 35 fits against the inner peripheral wall of the mounting hole 11. With this structure, under the cooperation of the annular boss and the mounting hole, the outer peripheral wall of the annular boss fits against the inner peripheral wall of the mounting hole, thereby achieving radial positioning of the annular boss and the mounting hole, that is, achieving the positioning function of the bracket and the stator assembly. This facilitates the assembly of the bracket and the stator assembly, improves the reliability of the bracket and the stator assembly after assembly, and ensures the coaxiality of the bearing assembly and the shaft.

[0019] Two symmetrical reinforcing ribs 36 are provided at the connection between each connecting ear 33 and the corresponding bracket 3. The reinforcing ribs 36 are integrally formed with the connecting ear 33 and the bracket 3. By adopting this structure, the connection strength between the connecting ear and the bracket can be improved under the action of the reinforcing ribs, that is, the fracture resistance of the connection between the connecting ear and the bracket can be improved. Thus, under the action of the connecting ear, the bracket can be reliably fixed on the stator assembly.

[0020] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An ultra-thin shaded-pole motor, comprising a stator assembly (1), a rotor assembly (2), and two supports (3); the rotor assembly (2) is rotatably disposed inside the stator assembly (1), and the two supports (3) are symmetrically fixed on the front and rear sides of the stator assembly (1), and both ends of the rotating shaft (21) located in the rotor assembly (2) are rotatably connected to the corresponding support (3) via a bearing assembly (4); characterized in that: The rotor body (22) in the rotor assembly (2) has cavities (221) at both ends in the axial direction. Each bracket (3) has an annular protrusion (31) on the inner side of its middle section. The inner side of the protrusion (31) forms an annular mounting cavity (32). Each bearing assembly (4) is press-fitted into the mounting cavity (32) on the inner side of the corresponding bracket (3). Each protrusion (31) is inserted into the cavity (221) on the corresponding side and is clearance-fitted with the cavity (221).

2. The ultra-thin shaded-pole motor according to claim 1, characterized in that: Each bracket (3) has two symmetrical connecting ears (33) on its outer wall, and each connecting ear (33) has a connecting hole (34). The stator assembly (1) has two symmetrical mounting holes (11). The two connecting holes (34) on each bracket (3) are coaxially arranged with one of the mounting holes (11). The two brackets (3) are fastened to the stator assembly (1) by bolt assemblies passing through the connecting holes (34) and the mounting holes (11).

3. The ultra-thin shaded-pole motor according to claim 2, characterized in that: Each of the connecting ears (33) has an annular boss (35) on its inner side that is coaxial with the mounting hole (11) on the corresponding side. The annular boss (35) is coaxially inserted into the end of the mounting hole (11), and the outer peripheral wall of the annular boss (35) fits against the inner peripheral wall of the mounting hole (11).

4. The ultra-thin shaded-pole motor according to claim 2 or 3, characterized in that: Two symmetrical reinforcing ribs (36) are provided at the connection between each connecting ear (33) and the corresponding bracket (3). The reinforcing ribs (36) are integrally formed with the connecting ear (33) and the bracket (3).

Images