Thin shaded pole motor

Abstract

The utility model discloses a thin shaded pole motor, which relates to the technical field of motors and comprises a stator assembly, a rotor assembly embedded in the stator assembly, an upper support covering the upper end of the rotor assembly and a first cooling fan. One end of a rotating shaft of the rotor assembly extends to the outer side of the upper support from the interior of the stator assembly, and the rotating shaft is sleeved with the first cooling fan. The upper support extends in the radial direction to form a plurality of connecting plates, one end of any connecting plate is folded upwards to form a folding part, the connecting plates are arranged in the circumferential direction to form a connecting support structure, a mounting area is formed based on the folding parts of the connecting plates, and the first cooling fan is located in the mounting area. The first cooling fan is accommodated in the mounting area of the connecting bracket, so that the structural design of the shaded pole motor is simplified, and meanwhile, the cooling performance of the shaded pole motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a thin shaded-pole motor. Background Art

[0002] In order to increase the proportion of the effective usable volume of the oven to the overall volume of the oven, existing oven equipment needs to reduce the structural dimensions of the shaded pole motor inside the oven. However, since the oven generates a high ambient temperature when working, it affects the service life and stability of the shaded pole motor. Adding a cooling fan or an external cooling mechanism will increase the overall size of the shaded pole motor, which cannot meet the requirements of the oven structure design. Therefore, there is an urgent need for a thin shaded pole motor that can meet the requirements of miniaturized installation size and at the same time has good heat dissipation effect. Utility Model Content

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art. The present invention provides a thin shaded-pole motor, which simplifies the structural design of the shaded-pole motor and improves the heat dissipation performance of the shaded-pole motor by accommodating the first cooling fan in the installation area of ​​the connecting bracket.

[0004] The utility model provides a thin shaded pole motor, which comprises: a stator assembly, a rotor assembly embedded in the stator assembly, an upper bracket covering the upper end of the rotor assembly, and a first cooling fan;

[0005] One end of the rotating shaft of the rotor assembly extends from the inside of the stator assembly to the outside of the upper bracket, and the first cooling fan is sleeved on the rotating shaft;

[0006] The upper bracket has a plurality of connecting plates extending radially, one end of each connecting plate being folded upward to form a folded portion, and the plurality of connecting plates are arranged in a circumferential direction to form a connecting bracket structure, and a mounting area is formed based on the folded portions of the plurality of connecting plates, and the first cooling fan is located in the mounting area;

[0007] The rotating shaft is provided with a second cooling fan, the first cooling fan is located between the stator assembly and the second cooling fan, the air outlet directions of the first cooling fan and the second cooling fan are opposite, and the air outlet direction of the first cooling fan is toward the stator assembly.

[0008] Furthermore, several of the connecting plates and the upper bracket are an integrally formed structure.

[0009] Furthermore, a first washer and a second washer are provided on the rotating shaft, the first cooling fan is provided on the first washer, and the second cooling fan is provided on the second washer.

[0010] Furthermore, a first clamping spring and a second clamping spring are provided on the rotating shaft, the top surface of the first clamping spring is in contact with the bottom surface of the first washer, and the first clamping spring is clamped on the rotating shaft;

[0011] The top surface of the second clamping spring is in contact with the bottom surface of the second washer, and the second clamping spring is clamped on the rotating shaft.

[0012] Furthermore, the rotating shaft is provided with a bearing clamping claw, which is a disc structure with a matching hole, and a plurality of ratchets are formed in the disc structure based on slots;

[0013] When the bearing clamp is sleeved on the rotating shaft, a plurality of the pawls abut against the circumferential outer wall of the rotating shaft, and the bottom surface of the bearing clamp is in contact with the top surface of the first cooling fan.

[0014] Furthermore, a groove is provided on the circumferential outer wall of the rotating shaft, and one end of a plurality of the pawls is snap-fitted into the groove.

[0015] Furthermore, the thin shaded-pole motor further includes a coil support and a coil;

[0016] The coil support is arranged on one side of the stator assembly, and the coil is sleeved in the coil support.

[0017] Furthermore, the thin shaded-pole motor further includes an electrode sheet, the coil bracket is provided with a slot, and the electrode sheet is plugged into the slot.

[0018] Furthermore, a barb structure is provided at one end of the electrode sheet, and the electrode sheet is inserted into the slot of the coil support based on the barb structure.

[0019] The utility model provides a thin shaded-pole motor, which extends a plurality of connecting plates outward from an upper bracket and forms a connecting bracket structure based on the connecting plates, so that the connecting bracket and the upper bracket are combined, thereby simplifying the bracket structure design of the thin shaded-pole motor; by forming an installation space for accommodating a first cooling fan in the connecting bracket, the rationality of the motor structure space setting is improved, the heat dissipation performance of the shaded-pole motor is improved, and the compactness of the installation structure of the shaded-pole motor is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a thin shaded-pole motor in an embodiment of the present utility model;

[0021] Figure 2 This is an exploded view of the structure of the thin shaded-pole motor in the embodiment of the present utility model;

[0022] Figure 3This is a cross-sectional view of the structure of a thin shaded-pole motor in an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the rotating shaft structure in an embodiment of the present utility model;

[0024] Figure 5 It is a schematic diagram of the coil support structure in an embodiment of the present utility model. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying 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.

[0026] Figure 1 The following is a schematic diagram showing the structure of a thin shaded-pole motor according to an embodiment of the present invention. Figure 2 An exploded view of the structure of a thin shaded-pole motor in an embodiment of the present invention is shown. The thin shaded-pole motor includes: a stator assembly 1, a rotor assembly 2 embedded in the stator assembly 1, an upper bracket 3 covering the upper end of the rotor assembly 2, and a lower bracket 4 arranged at the lower end of the rotor assembly 2. The upper bracket 3, the lower bracket 4 and the stator assembly 1 can be fixed by bolt locking, so that the upper bracket 3, the lower bracket 4 and the stator assembly 1 cooperate to limit the rotor assembly 2, thereby realizing the encapsulation of the rotor assembly 2.

[0027] One end of the rotating shaft 21 of the rotor assembly 2 extends from the inside of the stator assembly 1 to the outside of the upper bracket 3, and the first cooling fan 5 is sleeved on the rotating shaft 21. The first cooling fan 5 supplies air to the stator assembly 1 for heat dissipation, thereby improving the heat dissipation effect of the thin shaded pole motor.

[0028] The upper bracket 3 extends radially to form several connecting plates, and one end of any connecting plate is folded upward to form a folded portion. Several connecting plates are arranged along the circumferential direction to form a connecting bracket structure, so that the thin shaded pole motor can be installed in the product based on the connecting bracket.

[0029] Furthermore, any of the folding portions is provided with a threaded hole, and when the thin shaded pole motor is connected to the installation position of the product based on the connecting bracket, it can be connected and fixed based on the threaded hole in combination with screws.

[0030] Specifically, a mounting area is formed based on the folded portions of several connecting plates, and the first cooling fan 5 is located within the mounting area. By providing the connecting plates and folded portions, the size and thickness of the connecting bracket can be reduced, allowing the connecting plates to extend radially outside the stator assembly 1. The folded portions increase the thickness of the connecting bracket at the connection point with the product to meet the threaded connection requirements of bolts or screws. Furthermore, several of the folded portions are arranged circumferentially to form a mounting area for accommodating the first cooling fan 5. This allows the first cooling fan 5 to be close to the stator assembly 1 and rotor assembly 2, improving the cooling effect of the first cooling fan 5 on the thin shaded-pole motor. This also improves the rationality of the spatial arrangement structure of the connecting bracket and the first cooling fan 5, simplifying the overall size of the thin shaded-pole motor.

[0031] Furthermore, the plurality of connecting plates and the upper bracket 3 are integrally formed. By integrally forming the plurality of connecting plates on the upper bracket 3 , the structural stability of the bracket of the thin shaded-pole motor can be improved.

[0032] Furthermore, the thin shaded-pole motor is designed with 72 slots, so that the lamination thickness of the stator assembly 1 meets the structural design requirements of the thin shaded-pole motor.

[0033] Specifically, the rotating shaft 21 is provided with a second cooling fan 6. The first cooling fan 5 is located between the stator assembly 1 and the second cooling fan 6. The first cooling fan 5 and the second cooling fan 6 have opposite air outlet directions, and the air outlet direction of the first cooling fan 5 is toward the stator assembly 1. When the thin shaded pole motor is in operation, the rotating shaft 21 of the rotor assembly 2 rotates based on the thin shaded pole motor, and the rotating shaft 21 can drive the first cooling fan 5 and the second cooling fan 6 to rotate synchronously. The first cooling fan 5 can dissipate heat from the rotor body, and the second cooling fan 6 can dissipate air to dissipate heat from the installed equipment.

[0034] Furthermore, based on the coaxial arrangement of the first cooling fan 5 and the second cooling fan 6, the rotating shaft 21 of the rotor assembly 2 can synchronously drive the first cooling fan 5 and the second cooling fan 6 to rotate, thereby meeting the air outlet and heat dissipation requirements of the thin shaded pole motor installation equipment. At the same time, based on the first cooling fan 5, the rotor body can be cooled by air outlet, thereby improving the working heat dissipation reliability of the thin shaded pole motor.

[0035] Furthermore, when the thin shaded pole motor is working, the first cooling fan 5 maintains the air outlet and heat dissipation operation on the rotor body, thereby improving the gas flow around the thin shaded pole motor, thereby reducing the heat accumulation of the thin shaded pole motor and achieving a good heat dissipation effect.

[0036] The rotor assembly 2 includes a plurality of rotor silicon steel sheets, any of which is provided with a plurality of notches, and the plurality of rotor silicon steel sheets are staggered and stacked so that the plurality of rotor silicon steel sheets are stacked to form a rotor body, and a plurality of arc-shaped through slots are formed in the rotor assembly 2;

[0037] The plurality of arc-shaped through slots are evenly arranged on the rotor body along the circumferential direction. The plurality of arc-shaped through slots can increase the magnetic flux of the rotor body, thereby achieving uniform driving of the rotor body.

[0038] The stator assembly 1 includes a plurality of stator silicon steel sheets, any of which is provided with an opening. The stator assembly 1 with an accommodating cavity is formed by stacking the plurality of stator silicon steel sheets, and the rotor assembly 2 can be accommodated in the accommodating cavity of the stator assembly 1 .

[0039] Specifically, Figure 3 It shows a cross-sectional view of the structure of a thin shaded-pole motor in an embodiment of the present utility model; Figure 4 The schematic diagram of the structure of the rotating shaft 21 in an embodiment of the utility model is shown; the rotating shaft 21 is provided with a first washer 22 and a second washer, the first cooling fan 5 is mounted on the first washer 22, and the second cooling fan 6 is mounted on the second washer, and the rotating shaft 21 is provided with a first retaining spring 23 and a second retaining spring. The top surface of the first retaining spring 23 abuts the bottom surface of the first washer 22, and the first retaining spring 23 is clamped to the rotating shaft 21, while the top surface of the second retaining spring abuts the bottom surface of the second washer, and the second retaining spring is clamped to the rotating shaft 21. The rotating shaft 21 is provided with grooves corresponding to the mounting positions of the first cooling fan 5 and the second cooling fan 6. The first retaining spring 23 engages with the positioning groove 212 of the mounting position of the first cooling fan 5. The first retaining spring 23 can support and limit the first cooling fan 5, ensuring that the first cooling fan 5 can operate normally on the rotating shaft 21.

[0040] The first washer 22 is provided between the first clamping spring 23 and the first cooling fan 5 . The first washer 22 improves the supporting capability of the first clamping spring 23 for the first cooling fan 5 , thereby improving the installation stability of the first cooling fan 5 .

[0041] The second clamping spring is engaged with the positioning groove 212 of the installation position of the second cooling fan 6. Based on the second clamping spring, the second cooling fan 6 can be supported and limited to ensure that the second cooling fan 6 can operate normally on the rotating shaft 21.

[0042] The second washer is provided between the second clamping spring and the second heat dissipation fan 6 . The second washer improves the supporting capability of the second clamping spring for the second heat dissipation fan 6 , thereby improving the installation stability of the second heat dissipation fan 6 .

[0043] Furthermore, the first washer 22 and the second washer are formed based on metal powder metallurgy, so that the first washer 22 and the second washer have good structural rigidity, which can effectively improve the supporting stability of the first cooling fan 5 and the second cooling fan 6.

[0044] Specifically, the rotating shaft 21 is provided with a bearing clamp 24, and the bearing clamp 24 is a disc structure with a matching hole, and a plurality of pawls are formed in the disc structure based on the slots. When the bearing clamp 24 is sleeved on the rotating shaft 21, the plurality of pawls are against the circumferential outer wall of the rotating shaft 21, and the bottom surface of the bearing clamp 24 is attached to the top surface of the first cooling fan 5. After the first cooling fan 5 is installed on the rotating shaft 21, the bearing clamp 24 is sleeved above the first cooling fan 5, and the first cooling fan 5 is pressed and limited based on the bearing clamp 24 to prevent the first cooling fan 5 from moving upward during rotation.

[0045] Furthermore, a limit groove 211 is provided on the circumferential outer wall of the rotating shaft 21, and one end of several of the pawls is snap-fitted into the limit groove 211. By pressing down the bearing clamp 24, the bearing clamp 24 is formed, and several of the pawls are pressed against each other in the limit groove 211, thereby achieving extrusion and locking of the first cooling fan 5.

[0046] Specifically, Figure 5 A schematic structural diagram of the coil bracket 7 in an embodiment of the present utility model is shown. The thin shaded-pole motor also includes a coil bracket 7, a coil 9 and an electrode sheet 8. The coil bracket 7 is arranged on one side of the stator assembly 1, and the coil 9 is sleeved in the coil bracket 7. A slot is provided on the coil bracket 7, and the electrode sheet 8 is plugged into the slot. The electrical connection end of the thin shaded-pole motor is formed based on the electrode sheet 8. When the shaded-pole motor is connected to an external circuit, an induced magnetic field is generated based on the power supply of the coil 9, thereby driving the rotor assembly 2 to rotate, thereby realizing the driven rotation of the first cooling fan 5 and the second cooling fan 6.

[0047] Specifically, a barb structure is provided at one end of the electrode sheet 8, and the electrode sheet 8 is inserted into the slot of the coil bracket 7 based on the barb structure. The barb structure can increase the contact friction between the electrode sheet 8 and the slot, thereby improving the stability of the electrode sheet 8 inserted into the slot of the coil bracket 7.

[0048] An embodiment of the present utility model provides a thin shaded-pole motor, which extends a plurality of connecting plates outward from an upper bracket 3 and forms a connecting bracket structure based on the connecting plates, so that the connecting bracket and the upper bracket 3 are combined, thereby simplifying the bracket structure design of the thin shaded-pole motor; by forming an installation space for accommodating a first cooling fan 5 in the connecting bracket, the rationality of the motor structure space setting is improved, the heat dissipation performance of the shaded-pole motor is improved, and the compactness of the installation structure of the shaded-pole motor is improved.

[0049] In addition, the above provides a detailed introduction to the embodiments of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A thin shaded-pole motor, characterized in that: The thin shaded pole motor comprises: a stator assembly, a rotor assembly embedded in the stator assembly, an upper bracket covering the upper end of the rotor assembly, and a first cooling fan; One end of the rotating shaft of the rotor assembly extends from the inside of the stator assembly to the outside of the upper bracket, and the first cooling fan is sleeved on the rotating shaft; The upper bracket has a plurality of connecting plates extending radially, one end of each connecting plate being folded upward to form a folded portion, and the plurality of connecting plates are arranged in a circumferential direction to form a connecting bracket structure, and a mounting area is formed based on the folded portions of the plurality of connecting plates, and the first cooling fan is located in the mounting area; The rotating shaft is provided with a second cooling fan, the first cooling fan is located between the stator assembly and the second cooling fan, the air outlet directions of the first cooling fan and the second cooling fan are opposite, and the air outlet direction of the first cooling fan is toward the stator assembly.

2. The thin shaded-pole motor according to claim 1, wherein: The plurality of connecting plates and the upper bracket are integrally formed.

3. The thin shaded-pole motor according to claim 1, wherein: A first washer and a second washer are provided on the rotating shaft. The first heat dissipation fan is provided on the first washer, and the second heat dissipation fan is provided on the second washer.

4. The thin shaded-pole motor according to claim 3, wherein: The rotating shaft is provided with a first clamping spring and a second clamping spring, the top surface of the first clamping spring is in contact with the bottom surface of the first washer, and the first clamping spring is clamped on the rotating shaft; The top surface of the second clamping spring is in contact with the bottom surface of the second washer, and the second clamping spring is clamped on the rotating shaft.

5. The thin shaded-pole motor according to claim 1, wherein: The rotating shaft is provided with a bearing clamping claw, which is a disc structure with a matching hole, and a plurality of ratchets are formed in the disc structure based on slots; When the bearing clamp is sleeved on the rotating shaft, a plurality of the pawls abut against the circumferential outer wall of the rotating shaft, and the bottom surface of the bearing clamp is in contact with the top surface of the first cooling fan.

6. The thin shaded-pole motor according to claim 5, characterized in that: A groove is provided on the circumferential outer wall of the rotating shaft, and one end of a plurality of the pawls is snap-fitted into the groove.

7. The thin shaded-pole motor according to claim 1, wherein: The thin shaded-pole motor further includes a coil support and a coil; The coil support is arranged on one side of the stator assembly, and the coil is sleeved in the coil support.

8. The thin shaded-pole motor according to claim 7, wherein: The thin shaded-pole motor further includes an electrode sheet. The coil support is provided with a slot, and the electrode sheet is plugged into the slot.

9. The thin shaded-pole motor according to claim 8, wherein: One end of the electrode sheet is provided with a barb structure, and the electrode sheet is inserted into the slot of the coil support based on the barb structure.

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