Shielded pole machine with positioning structure

Abstract

The utility model provides a kind of cage pole motor with positioning structure, including stator, rotor, front bearing assembly and rear bearing assembly;Rotor is axially arranged in stator and is rotatably connected with stator, front bearing assembly and rear bearing assembly are respectively fixed in the front and rear of stator, the front end of rotor is arranged in front bearing assembly and is rotatably connected with stator by front bearing assembly, the rear end of rotor is arranged in rear bearing assembly and is rotatably connected with stator by rear bearing assembly;The rear end of rotor is provided with positioning structure, and positioning structure is used to cooperate with tool and is inserted and circumferentially limited;When positioning structure cooperates with tool and is inserted, and when the front end of rotor is threadedly connected with nut, tool is used to limit the rotation of rotor relative to stator;The utility model can bring convenience to the thread tightening of nut and rotor, that is, can bring convenience to the assembly of fan blade and rotor.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a shaded-pole motor with a positioning structure. 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 include a stator, a rotor, a front bearing assembly, and a rear bearing assembly. The rotor is axially inserted into the stator and rotatably connected to it. The front and rear bearing assemblies are fixed to the front and rear sides of the stator, respectively. The front end of the rotor is inserted into the front bearing assembly and rotatably connected to the stator through it. The rear end of the rotor is inserted into the rear bearing assembly and rotatably connected to the stator through it through it. When the fan blade is assembled with the front end of the rotor in the above-mentioned shaded-pole motor, the fan blade is sleeved on the front end of the rotor, and the fan blade is pressed onto the front end of the rotor by a nut that is threadedly connected to the front end of the rotor. However, during the process of threading the nut and the rotor, the rotor will rotate relative to the stator, which results in the disadvantage that it is inconvenient to tighten the nut and the rotor threads, that is, the disadvantage that it is inconvenient to fix the fan blade and the rotor. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a shaded pole motor with a positioning structure, which facilitates the tightening of the nut and the rotor threads, and also facilitates the assembly of the fan blade and the rotor.

[0004] This utility model provides a shaded-pole motor with a positioning structure, including a stator, a rotor, a front bearing assembly, and a rear bearing assembly. The rotor is axially inserted into the stator and rotatably connected to the stator. The front bearing assembly and the rear bearing assembly are respectively fixed on the front and rear sides of the stator. The front end of the rotor is inserted into the front bearing assembly and rotatably connected to the stator through the front bearing assembly. The rear end of the rotor is inserted into the rear bearing assembly and rotatably connected to the stator through the rear bearing assembly. A positioning structure is provided at the rear end of the rotor. The positioning structure is used to cooperate with and insert into a tooling and to limit circumferential movement. When the positioning structure is inserted into the tooling and is threadedly connected to a nut at the front end of the rotor, the tooling is used to restrict the rotation of the rotor relative to the stator.

[0005] By adopting the above structure, this utility model can achieve the purpose of circumferential positioning by fitting the positioning structure and tooling together and inserting them when the fan blade is fastened to the front end of the rotor by the nut. Thus, when the nut used to fix the fan blade is threadedly connected to the front end of the rotor, the rotor can be prevented from rotating relative to the stator. This makes it easier to tighten the threads of the nut and the rotor, and also makes it easier to assemble the fan blade and the rotor.

[0006] In one possible implementation, the positioning structure includes a cross-section on the side wall at the rear end of the rotor, extending along the axial direction of the rotor. The rotor at the location of the cross-section forms a "D" shape, and the tooling is provided with a "D"-shaped slot. The rotor at the location of the cross-section is used to engage with the slot on the tooling and achieve circumferential positioning. By adopting this positioning structure, when the rotor at the location of the cross-section engages with the slot on the tooling, circumferential positioning can be achieved between the rotor and the tooling. At this time, a fan blade can be installed on the front end of the rotor and a nut can be tightened. Since circumferential positioning is achieved between the rotor and the tooling, the rotor can be prevented from rotating relative to the stator during the tightening of the nut to the front end of the rotor. This facilitates the tightening of the nut and the rotor, and also facilitates the fixing process of the fan blade and the front end of the rotor.

[0007] In one possible implementation, the positioning structure includes a cross groove on the rear end face of the rotor, and a cross-shaped rib on the tooling that matches the cross groove. The cross groove is used to engage with the cross rib and provide circumferential positioning. With this positioning structure, when the cross groove on the rear end of the rotor engages with the cross rib on the tooling, circumferential positioning can be achieved between the rotor and the tooling. At this time, the fan blade can be installed on the front end of the rotor and the nut can be tightened. Since circumferential positioning is achieved between the rotor and the tooling, the rotor can be prevented from rotating relative to the stator during the tightening of the nut to the front end of the rotor. This facilitates the tightening of the nut and the rotor, and also facilitates the fixing of the fan blade to the front end of the rotor.

[0008] In one possible implementation, the stator is provided with two front-to-back symmetrical connecting holes, and the front bearing assembly, stator and rear bearing assembly are fastened together by two front-to-back symmetrical bolts; the threaded portion of each bolt moves through the corresponding side of the rear bearing assembly and moves through one of the connecting holes and is threadedly connected to the corresponding side of the front bearing assembly; with this structure, the front bearing assembly, stator and rear bearing assembly can be reliably fastened together by two front-to-back symmetrical bolts.

[0009] In one possible implementation, the end face of the front bearing assembly facing the stator is provided with a first annular boss corresponding to each of the two connecting holes. Each first annular boss is inserted into the front end of the corresponding connecting hole and radially limited by the connecting hole. The end face of the rear bearing assembly facing the stator is provided with a second annular boss corresponding to each of the two connecting holes. Each second annular boss is inserted into the rear end of the corresponding connecting hole and radially limited by the connecting hole. With this structure, when the front bearing assembly and the rear bearing assembly are fixed by bolts, the first annular boss on the front bearing assembly can engage with the front end of the corresponding connecting hole to achieve the purpose of limiting the connection, and the second annular boss on the rear bearing assembly can engage with the rear end of the corresponding connecting hole to achieve the purpose of limiting the connection. This facilitates the assembly of the front bearing assembly and the stator, as well as the assembly of the rear bearing assembly and the stator, and improves the reliability of the front bearing assembly and the stator after assembly.

[0010] In one possible implementation, a number of connecting arms are axially arranged on the outer side wall of the front bearing assembly, and a fixing hole is provided at the outer end of each connecting arm. With this structure, when the shaded pole motor is fixed to other components, the screw of the fastening screw can pass through the fixing hole and press the connecting arm onto the other components, which can conveniently fix the shaded pole motor to other components and has the advantage of high fixing reliability. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention when the technical solution of Embodiment 1 is adopted;

[0012] Figure 2 for Figure 1 A partially disassembled three-dimensional structure diagram;

[0013] Figure 3 This is a three-dimensional structural diagram of the present invention when the technical solution of Embodiment 2 is adopted. Detailed Implementation

[0014] 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.

[0015] 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.

[0016] 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.

[0017] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Example 1

[0019] See Figure 1-2 As shown in the figure, this application discloses a shaded-pole motor with a positioning structure, including a stator 1, a rotor 2, a front bearing assembly 3, and a rear bearing assembly 4; the rotor 2 is axially inserted into the stator 1 and rotatably connected to the stator 1, the front bearing assembly 3 and the rear bearing assembly 4 are respectively fixed on the front and rear sides of the stator 1, the front end of the rotor 2 is inserted into the front bearing assembly 3 and rotatably connected to the stator 1 through the front bearing assembly 3, and the rear end of the rotor 2 is inserted into the rear bearing assembly 4 and rotatably connected to the stator 1 through the rear bearing assembly 4; a positioning structure is provided at the rear end of the rotor 2, which is used to cooperate with and insert into a tooling and to limit circumferential movement; when the positioning structure is cooperated with and inserted into the tooling, and when the front end of the rotor 2 is threadedly connected to a nut, the tooling is used to limit the rotation of the rotor 2 relative to the stator 1.

[0020] The positioning structure includes a cut surface 21 on the side wall at the rear end of the rotor 2. The cut surface 21 extends along the axial direction of the rotor 2. The rotor 2 at the location of the cut surface 21 forms a "D" shape. The tooling is provided with a "D" shaped slot. The rotor 2 at the location of the cut surface 21 is used to engage with the slot on the tooling and be circumferentially limited. By adopting this positioning structure, when the rotor at the location of the cut surface engages with the slot on the tooling, the rotor and the tooling can be circumferentially limited. At this time, the fan blade can be installed on the front end of the rotor and the nut can be tightened. Since the rotor and the tooling are circumferentially limited, the rotor can be prevented from rotating relative to the stator during the process of tightening the nut to the front end of the rotor. This facilitates the tightening of the nut and the rotor, and also facilitates the fixing process of the fan blade and the front end of the rotor.

[0021] The stator 1 is provided with two front-to-back symmetrical connecting holes 11. The front bearing assembly 3, the stator 1 and the rear bearing assembly 4 are fastened by two front-to-back symmetrical bolts 5. The threaded part of each bolt 5 moves through the corresponding side of the rear bearing assembly 4 and through one of the connecting holes 11 and is threadedly connected to the corresponding side of the front bearing assembly 3. With this structure, the front bearing assembly, the stator and the rear bearing assembly can be reliably fastened together by two front-to-back symmetrical bolts.

[0022] The front bearing assembly 3 has a first annular boss 31 on its end face facing the stator 1, corresponding to two connecting holes 11. Each first annular boss 31 is inserted into the front end of the corresponding connecting hole 11 and radially limited by the connecting hole 11. The rear bearing assembly 4 has a second annular boss 41 on its end face facing the stator 1, corresponding to two connecting holes 11. Each second annular boss 41 is inserted into the rear end of the corresponding connecting hole 11 and radially limited by the connecting hole 11. With this structure, when the front bearing assembly and the rear bearing assembly are fixed by bolts, the first annular boss on the front bearing assembly can engage with the front end of the corresponding connecting hole and achieve the purpose of limiting the connection. The second annular boss on the rear bearing assembly can engage with the rear end of the corresponding connecting hole and achieve the purpose of limiting the connection. This facilitates the assembly of the front bearing assembly and the stator, as well as the assembly of the rear bearing assembly and the stator, and improves the reliability of the front bearing assembly and the stator after assembly.

[0023] A number of connecting arms 32 are axially arranged on the outer side wall of the front bearing assembly 3, and a fixing hole 33 is provided at the outer end of each connecting arm 32. With this structure, when the shaded pole motor is fixed to other components, the screw part of the fastening screw can pass through the fixing hole and press the connecting arm onto the other components, which can conveniently fix the shaded pole motor to other components and has the advantage of high fixing reliability.

[0024] Example 2

[0025] See Figure 3 As shown, unlike Embodiment 1, the positioning structure includes a cross groove 22 on the rear end face of the rotor 2. The tooling is provided with a cross-shaped rib that matches the cross groove 22. The cross groove 22 is used to engage with the rib and provide circumferential positioning. By adopting this positioning structure, when the cross groove on the rear end of the rotor engages with the cross-shaped rib on the tooling, circumferential positioning can be achieved between the rotor and the tooling. At this time, the fan blade can be installed on the front end of the rotor and the nut can be tightened. Since circumferential positioning is achieved between the rotor and the tooling, the rotor can be prevented from rotating relative to the stator during the tightening of the nut to the front end of the rotor. This facilitates the tightening of the nut and the rotor, and also facilitates the fixing of the fan blade and the front end of the rotor.

[0026] 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. A shaded-pole motor with a positioning structure, comprising a stator (1), a rotor (2), a front bearing assembly (3), and a rear bearing assembly (4); the rotor (2) is axially inserted into the stator (1) and rotatably connected to the stator (1); the front bearing assembly (3) and the rear bearing assembly (4) are respectively fixed to the front and rear sides of the stator (1); the front end of the rotor (2) is inserted into the front bearing assembly (3) and rotatably connected to the stator (1) through the front bearing assembly (3); the rear end of the rotor (2) is inserted into the rear bearing assembly (4) and rotatably connected to the stator (1) through the rear bearing assembly (4); characterized in that: The rear end of the rotor (2) is provided with a positioning structure, which is used to cooperate with the tooling and limit the circumferential position; when the positioning structure is cooperated with the tooling and is threadedly connected to the nut at the front end of the rotor (2), the tooling is used to restrict the rotor (2) from rotating relative to the stator (1).

2. The shaded-pole motor with a positioning structure according to claim 1, characterized in that: The positioning structure includes a cut surface (21) on the side wall at the rear end of the rotor (2). The cut surface (21) extends along the axial direction of the rotor (2). The rotor (2) located at the position of the cut surface (21) forms a "D" shape. The tooling is provided with a "D" shaped slot. The rotor (2) located at the position of the cut surface (21) is used to engage with the slot on the tooling and be circumferentially limited.

3. The shaded-pole motor with a positioning structure according to claim 1, characterized in that: The positioning structure includes a cross groove (22) on the rear end face of the rotor (2). The tooling is provided with a cross-shaped rib that matches the cross groove (22). The cross groove (22) is used to engage with the rib and limit its circumferential position.

4. The shaded-pole motor with a positioning structure according to any one of claims 1-3, characterized in that: The stator (1) is provided with two symmetrical connecting holes (11). The front bearing assembly (3), the stator (1) and the rear bearing assembly (4) are fastened by two symmetrical bolts (5). The threaded part of each bolt (5) can move through the corresponding side of the rear bearing assembly (4) and move through one of the connecting holes (11) before being threaded to the corresponding side of the front bearing assembly (3).

5. The shaded-pole motor with a positioning structure according to claim 4, characterized in that: The front bearing assembly (3) has a first annular boss (31) on the end face facing the stator (1) that corresponds to the two connecting holes (11) one by one. Each first annular boss (31) is inserted into the front end of the connecting hole (11) at the corresponding position and is radially limited to the connecting hole (11). The rear bearing assembly (4) has a second annular boss (41) on the end face facing the stator (1) that corresponds to the two connecting holes (11) one by one. Each second annular boss (41) is inserted into the rear end of the connecting hole (11) at the corresponding position and is radially limited to the connecting hole (11).

6. The shaded-pole motor with a positioning structure according to any one of claims 1-3 or 5, characterized in that: The front bearing assembly (3) has a plurality of connecting arms (32) axially arranged on the outer side wall, and each connecting arm (32) has a fixing hole (33) at its outer end.

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