Motor assembly and cooking device

Abstract

The utility model provides a motor assembly and a cooking device, the motor assembly is used for the cooking device, and the motor assembly comprises a driving part; the output shaft is connected with the driving part, and the driving part can drive the output shaft to rotate; the support is located on one side of the driving part in the axial direction of the output shaft, the support comprises a mounting hole, the output shaft is arranged in the mounting hole in a penetrating mode and can rotate relative to the mounting hole, and the support is used for supporting the output shaft; and the fan blades are arranged on the output shaft, the output shaft can drive the fan blades to rotate, and the fan blades are arranged opposite to the driving part and used for cooling the driving part. According to the motor assembly provided by the utility model, the bracket can support the output shaft, so that the weight loaded on one end, far away from the driving part, of the output shaft is balanced, the unbalance loading condition of the output shaft is avoided, and the problems of large vibration and noise generated in the operation process of the motor assembly are further avoided. And meanwhile, when the output shaft rotates, the fan blades can be driven to rotate, and then heat dissipation of the driving part is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a motor component and a cooking device. Background Art

[0002] Currently, motors are widely used in driving and controlling various cooking devices. However, since the output shafts of motors in related technologies mostly adopt a cantilever structure, the output shafts are easily deformed, thus generating relatively large noise. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, a first aspect of the utility model provides a motor assembly.

[0005] The second aspect of the utility model also provides a cooking device.

[0006] In view of this, the first aspect of the utility model proposes a motor assembly for a cooking device, the motor assembly comprising: a driving part; an output shaft, the output shaft is connected to the driving part, and the driving part can drive the output shaft to rotate; a bracket, the bracket is located on one side of the driving part along the axial direction of the output shaft, the bracket comprises a mounting hole, the output shaft is passed through the mounting hole and can rotate relative to the mounting hole, the bracket is used to support the output shaft; fan blades are arranged on the output shaft, the output shaft can drive the fan blades to rotate, the fan blades are arranged relative to the driving part, and are used to cool the driving part.

[0007] The motor assembly provided by the utility model is used for a cooking device. The motor assembly includes a driving part, an output shaft, a bracket and a fan blade. The driving part can drive the output shaft to rotate to achieve power output. The bracket is arranged on one side of the driving part along the axial direction of the output shaft. The output shaft is inserted into the mounting hole of the bracket and can rotate relative to the mounting hole. The bracket can support the output shaft, thereby balancing the weight of the output shaft at one end away from the driving part, avoiding the output shaft from being overloaded, and thus avoiding the problem of large vibration and noise during the operation of the motor assembly. At the same time, the fan blade is arranged on the output shaft. When the output shaft rotates, it can drive the fan blade to rotate, thereby achieving heat dissipation of the driving part, improving the heat dissipation effect of the driving part, and no additional driving structure is needed, thereby reducing the use of parts, reducing the manufacturing cost and the overall volume of the motor assembly.

[0008] The motor assembly provided by the utility model may also have the following additional technical features:

[0009] In some embodiments, optionally, the bracket includes: a connecting portion, the connecting portion is provided with a mounting hole; a plurality of support rods, provided at the connecting portion, and the plurality of support rods are arranged at intervals along the circumference of the connecting portion.

[0010] In this embodiment, the bracket includes a connecting portion and a plurality of support rods. The connecting portion is used to be connected to the output shaft. The plurality of support rods are arranged on the connecting portion and are arranged at circumferential intervals along the connecting portion to achieve a supporting effect. At the same time, the arrangement of the support rods can also reduce the overall weight of the bracket, thereby reducing the manufacturing cost.

[0011] In some embodiments, optionally, the number of the support rods is at least three, and the at least three support rods are evenly distributed along the circumference of the connecting portion.

[0012] In this embodiment, the number of the support rods is at least three, and at least three support rods can effectively ensure the supporting effect and improve the reliability of the support for the output shaft.

[0013] In some embodiments, optionally, the motor assembly also includes: a first bearing, disposed in the mounting hole; a second bearing, disposed in the mounting hole, and the first bearing and the second bearing are spaced apart along the axial direction of the output shaft, and the output shaft passes through the first bearing and the second bearing, and is rotatably connected to the first bearing and the second bearing.

[0014] In this embodiment, the motor assembly further includes a first bearing and a second bearing, the first bearing and the second bearing are arranged in the mounting hole, and the output shaft is passed through the first bearing and the second bearing to be rotatably connected with the first bearing and the second bearing. The first bearing and the second bearing are arranged at intervals along the axial direction of the output shaft, which increases the range of support for the output shaft, thereby improving the support effect for the output shaft and effectively avoiding the occurrence of an overload condition of the output shaft.

[0015] In some embodiments, optionally, along the axial direction of the output shaft, the first bearing is located at one end of the mounting hole, and the second bearing is located at the other end of the mounting hole.

[0016] In this embodiment, along the axial direction of the output shaft, the first bearing is located at one end of the mounting hole, and the second bearing is located at the other end of the mounting hole, thereby increasing the distance between the first bearing and the second bearing, thereby increasing the support range of the output shaft, improving the support effect of the output shaft, and effectively avoiding the occurrence of output shaft overload.

[0017] In some embodiments, optionally, the fan blades are located on a side of the bracket facing away from the driving portion.

[0018] In this embodiment, the fan blades are arranged on the side of the bracket away from the driving part, which increases the space between the fan blades and the driving part, so that the airflow blown by the fan blades can effectively flow in the space between the driving part and the fan blades, thereby improving the heat dissipation effect of the driving part.

[0019] In some embodiments, optionally, the motor assembly also includes: a first limit member, which is provided on the output shaft, and the first limit member is located on one side of the fan blade along the axial direction of the output shaft; a second limit member, which is provided on the output shaft, and the second limit member is located on the other side of the fan blade along the axial direction of the output shaft, and the fan blade is clamped between the first limit member and the second limit member.

[0020] In this embodiment, the motor assembly also includes a first limit member and a second limit member, and the first limit member and the second limit member are arranged on both sides of the fan blade along the axial direction of the output shaft to limit the fan blade axially, prevent the fan blade from axial movement, improve the reliability of the connection between the fan blade and the output shaft, and prevent the fan blade from generating noise due to axial movement.

[0021] In some embodiments, optionally, a first groove and a second groove are provided on the output shaft, a portion of the first limit member is located in the first groove, and another portion cooperates with the blade stop, and a portion of the second limit member is located in the second groove, and another portion cooperates with the blade stop.

[0022] In this embodiment, a first groove and a second groove are provided on the output shaft, a portion of the first limit member is provided in the first groove, so that the first limit member is fixed on the output shaft along the axial direction of the output shaft, and a portion of the second limit member is provided in the second groove, so that the second limit member is fixed on the output shaft along the axial direction of the output shaft. At the same time, another portion of the first limit member and another portion of the second limit member respectively cooperate with the fan blade stopper, thereby realizing axial limitation of the fan blade and preventing the fan blade from axial movement.

[0023] In some embodiments, optionally, one of the first limiting member and the second limiting member is a retaining ring, and the other is a retaining spring.

[0024] In this embodiment, the axial limiting effect of the fan blades is improved through the cooperation of the retaining ring and the retaining spring, and it is also convenient for the disassembly and assembly of the fan blades, so as to facilitate the maintenance and installation of the motor assembly.

[0025] In some embodiments, optionally, the motor assembly further includes: a gasket, which is sleeved on the output shaft and located between the retaining spring and the fan blade.

[0026] In this embodiment, the gasket is sleeved on the output shaft to increase the stopping area of ​​the retaining spring on the fan blades and enhance the stopping effect on the fan blades.

[0027] In some embodiments, optionally, the driving unit includes: a stator, on which a winding is provided; a rotor, which is provided inside the stator or outside the stator, and the output shaft is connected to the rotor.

[0028] In this embodiment, the driving part includes a stator and a rotor arranged inside or outside the stator, and the output shaft is connected to the rotor. When the winding is energized, the rotor can rotate under the action of the magnetic field, thereby driving the output shaft to rotate and realizing power output.

[0029] According to a second aspect of the present invention, a cooking device is also proposed, comprising: a motor assembly as proposed in any of the above embodiments.

[0030] The cooking device provided in the second aspect of the present invention comprises the motor assembly proposed in any of the above embodiments, and therefore has all the beneficial effects of the motor assembly.

[0031] In some embodiments, optionally, the cooking device further includes: a shell, the motor assembly is disposed in the shell, and the bracket is supported by the shell.

[0032] In this embodiment, the cooking device further includes a shell, the motor assembly is disposed in the shell, and the bracket is supported on the shell, thereby supporting the output shaft.

[0033] In some embodiments, optionally, the cooking device includes any one of a microwave oven, an air fryer, a microwave air fryer, and a microwave steam oven.

[0034] In this embodiment, the cooking device includes any one of a microwave oven, an air fryer, a microwave air fryer, and a microwave steam oven to reduce the noise of the microwave oven, the air fryer, the microwave air fryer, and the microwave steam oven during operation and improve cooking efficiency.

[0035] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0037] Figure 1 One of the structural schematic diagrams of the motor assembly of one embodiment of the utility model is shown;

[0038] Figure 2 A second structural schematic diagram of a motor assembly according to an embodiment of the utility model is shown;

[0039] Figure 3 A third structural schematic diagram of a motor assembly according to an embodiment of the utility model is shown;

[0040] Figure 4 A fourth structural schematic diagram of a motor assembly according to an embodiment of the utility model is shown;

[0041] Figure 5A fifth structural schematic diagram of a motor assembly according to an embodiment of the utility model is shown;

[0042] Figure 6 A sixth structural schematic diagram of a motor assembly according to an embodiment of the utility model is shown;

[0043] Figure 7 A seventh structural diagram of a motor assembly according to an embodiment of the utility model is shown;

[0044] Figure 8 An eighth structural schematic diagram of a motor assembly according to an embodiment of the utility model is shown;

[0045] Fig. 9 A ninth structural diagram of a motor assembly according to an embodiment of the utility model is shown;

[0046] Fig.10 A tenth structural diagram of a motor assembly according to an embodiment of the utility model is shown;

[0047] Fig.11 The eleventh structural diagram of the motor assembly of one embodiment of the utility model is shown;

[0048] Fig.12 One of the structural schematic diagrams of a cooking device according to an embodiment of the utility model is shown;

[0049] Fig.13 A second structural schematic diagram of a cooking device according to an embodiment of the utility model is shown;

[0050] Fig.14 A third structural schematic diagram of a cooking device according to an embodiment of the utility model is shown;

[0051] Fig.15 A fourth structural schematic diagram of a cooking device according to an embodiment of the utility model is shown.

[0052] in, Figures 1 to 15 The corresponding relationship between the reference numerals and the component names is as follows:

[0053] 1 driving part, 10 stator, 12 rotor, 2 output shaft, 20 first groove, 22 second groove, 3 bracket, 30 mounting hole, 32 connecting part, 34 support rod, 4 fan blade, 5 first bearing, 6 second bearing, 7 first limiter, 8 second limiter, 9 gasket, 100 motor assembly, 200 cooking device, 300 housing, 400 fan. DETAILED DESCRIPTION

[0054] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0055] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0056] Refer to the following Figures 1 to 15 The motor assembly 100 and the cooking device 200 according to some embodiments of the present invention are described.

[0057] like Figure 1 and Figure 2 As shown, according to one embodiment of the utility model, the utility model proposes a motor assembly 100 for a cooking device 200, and the motor assembly 100 includes: a driving part 1, an output shaft 2, a bracket 3 and a fan blade 4. Specifically, the output shaft 2 is connected to the driving part 1, and the driving part 1 can drive the output shaft 2 to rotate. The bracket 3 is located on one side of the driving part 1 along the axial direction of the output shaft 2, and the bracket 3 includes a mounting hole 30. The output shaft 2 is inserted into the mounting hole 30 and can rotate relative to the mounting hole 30. The bracket 3 is used to support the output shaft 2. The fan blade 4 is provided on the output shaft 2, and the output shaft 2 can drive the fan blade 4 to rotate. The fan blade 4 is arranged relative to the driving part 1 for cooling the driving part 1.

[0058] The motor assembly 100 provided by the utility model is used for a cooking device 200. The motor assembly 100 includes a driving part 1, an output shaft 2, a bracket 3 and a fan blade 4. The driving part 1 can drive the output shaft 2 to rotate to achieve power output. The bracket 3 is arranged on one side of the driving part 1 along the axial direction of the output shaft 2. The output shaft 2 is inserted into the mounting hole 30 of the bracket 3 and can rotate relative to the mounting hole 30. The bracket 3 can support the output shaft 2, thereby balancing the weight of the output shaft 2 at one end away from the driving part 1, avoiding the output shaft 2 from being overloaded, and thus avoiding the problem of large vibration and noise during the operation of the motor assembly 100. At the same time, the fan blade 4 is arranged on the output shaft 2. When the output shaft 2 rotates, it can drive the fan blade 4 to rotate, thereby achieving heat dissipation of the driving part 1, improving the heat dissipation effect of the driving part 1, and no additional driving structure is needed, reducing the use of parts, reducing the manufacturing cost and the overall volume of the motor assembly 100.

[0059] It can be understood that a part of the output shaft 2 is arranged in the driving part 1 to be connected to the driving part 1, and the other part of the output shaft 2 and the bracket 3 are located on the same side of the driving part 1. The bracket 3 supports the output shaft 2 between the two ends of the output shaft 2, and the end of the output shaft 2 away from the driving part 1 is used to connect with the part to be driven 1 to achieve power output.

[0060] like Figure 2 and Figure 3 As shown, in some embodiments, optionally, the bracket 3 includes: a connecting portion 32 and a plurality of support rods 34. Specifically, the connecting portion 32 is provided with a mounting hole 30. The plurality of support rods 34 are provided on the connecting portion 32, and the plurality of support rods 34 are arranged at intervals along the circumference of the connecting portion 32.

[0061] In this embodiment, the bracket 3 includes a connecting portion 32 and a plurality of support rods 34. The connecting portion 32 is used to connect to the output shaft 2. The plurality of support rods 34 are arranged on the connecting portion 32 and are arranged at circumferential intervals along the connecting portion 32 to achieve a supporting effect. At the same time, the arrangement of the support rods 34 can also reduce the overall weight of the bracket 3, thereby reducing the manufacturing cost.

[0062] Optionally, the support rod 34 includes a connecting rod and a support column, the connecting rod is connected to the connecting portion 32 and extends radially along the output shaft 2, the support column is arranged at one end of the connecting rod away from the connecting portion 32 and extends axially along the output shaft 2 to be supported on structures such as the housing 300 to achieve support for the output shaft 2.

[0063] like Figure 3 As shown, in some embodiments, optionally, the number of the support rods 34 is at least three, and the at least three support rods 34 are evenly distributed along the circumference of the connecting portion 32 .

[0064] In this embodiment, the number of the support rods 34 is at least three. At least three support rods 34 can effectively ensure the supporting effect and improve the reliability of the support of the output shaft 2 by the bracket 3.

[0065] like Figure 3 , Figure 4 and Fig.10 As shown, in some embodiments, optionally, the motor assembly 100 further includes: a first bearing 5 and a second bearing 6. Specifically, the first bearing 5 and the second bearing 6 are both disposed in the mounting hole 30, and along the axial direction of the output shaft 2, the first bearing 5 and the second bearing 6 are spaced apart, and the output shaft 2 passes through the first bearing 5 and the second bearing 6, and is rotatably connected to the first bearing 5 and the second bearing 6.

[0066] In this embodiment, the motor assembly 100 further includes a first bearing 5 and a second bearing 6, which are disposed in the mounting hole 30, and the output shaft 2 is passed through the first bearing 5 and the second bearing 6 to be rotatably connected with the first bearing 5 and the second bearing 6. The first bearing 5 and the second bearing 6 are disposed at intervals along the axial direction of the output shaft 2, which increases the range of supporting the output shaft 2, thereby improving the supporting effect of the output shaft 2, and effectively avoiding the occurrence of an overload condition of the output shaft 2.

[0067] In some embodiments, optionally, along the axial direction of the output shaft 2 , the first bearing 5 is located at one end of the mounting hole 30 , and the second bearing 6 is located at the other end of the mounting hole 30 .

[0068] In this embodiment, along the axial direction of the output shaft 2, the first bearing 5 is located at one end of the mounting hole 30, and the second bearing 6 is located at the other end of the mounting hole 30, thereby increasing the distance between the first bearing 5 and the second bearing 6, thereby increasing the support range of the output shaft 2, improving the support effect of the output shaft 2, and effectively avoiding the occurrence of overload of the output shaft 2.

[0069] In some embodiments, optionally, the fan blade 4 is located on a side of the bracket 3 facing away from the driving unit 1 .

[0070] In this embodiment, the fan blade 4 is arranged on the side of the bracket 3 away from the driving part 1, which increases the space between the fan blade 4 and the driving part 1, so that the airflow blown by the fan blade 4 can effectively flow in the space between the driving part 1 and the fan blade 4, thereby improving the heat dissipation effect of the driving part 1.

[0071] like Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments, optionally, the motor assembly 100 also includes: a first limit member 7 and a second limit member 8, the first limit member 7 and the second limit member 8 are both arranged on the output shaft 2, the first limit member 7 is located on one side of the fan blade 4 along the axial direction of the output shaft 2, and the second limit member 8 is located on the other side of the fan blade 4 along the axial direction of the output shaft 2, and the fan blade 4 is clamped between the first limit member 7 and the second limit member 8.

[0072] In this embodiment, the motor assembly 100 also includes a first limit member 7 and a second limit member 8, and the first limit member 7 and the second limit member 8 are arranged on both sides of the fan blade 4 along the axial direction of the output shaft 2 to axially limit the fan blade 4 to prevent the fan blade 4 from axially moving, thereby improving the reliability of the connection between the fan blade 4 and the output shaft 2 and preventing the fan blade 4 from generating noise due to axial movement.

[0073] like Figure 7 and Figure 8As shown, in some embodiments, optionally, a first groove 20 and a second groove 22 are provided on the output shaft 2, a portion of the first limit member 7 is located in the first groove 20, and the other portion cooperates with the fan blade 4 stopper, and a portion of the second limit member 8 is located in the second groove 22, and the other portion cooperates with the fan blade 4 stopper.

[0074] In this embodiment, a first groove 20 and a second groove 22 are provided on the output shaft 2, and a portion of the first limiting member 7 is provided in the first groove 20 so that the first limiting member 7 is fixed on the output shaft 2 along the axial direction of the output shaft 2, and a portion of the second limiting member 8 is provided in the second groove 22 so that the second limiting member 8 is fixed on the output shaft 2 along the axial direction of the output shaft 2. At the same time, another portion of the first limiting member 7 and another portion of the second limiting member 8 respectively cooperate with the stopper of the fan blade 4, thereby realizing axial limitation of the fan blade 4 and preventing the fan blade 4 from axial movement.

[0075] Optionally, the first groove 20 is annular along the circumference of the output shaft 2 , and the second groove 22 is annular along the circumference of the output shaft 2 .

[0076] Optionally, the first limiting member 7 and the second limiting member 8 are both elastic to achieve locking of the fan blade 4 .

[0077] In some embodiments, optionally, one of the first limiting member 7 and the second limiting member 8 is a stop ring, and the other is a retaining spring.

[0078] In this embodiment, the axial limiting effect of the fan blade 4 is improved through the cooperation of the retaining ring and the retaining spring, and it is also convenient for the disassembly and assembly of the fan blade 4 to facilitate the maintenance and installation of the motor assembly 100.

[0079] In some embodiments, optionally, the motor assembly 100 further includes: a gasket 9 , which is sleeved on the output shaft 2 and located between the retaining spring and the fan blade 4 .

[0080] In this embodiment, the gasket 9 is sleeved on the output shaft 2 to increase the stopping area of ​​the retaining spring on the fan blade 4 and enhance the stopping effect on the fan blade 4 .

[0081] It can be understood that the gasket 9 contacts one side of the fan blade 4, and the retaining spring limits the fan blade 4 through the gasket 9. The radial dimension of the gasket 9 is larger than the radial dimension of the retaining spring, thereby increasing the limiting area of ​​the fan blade 4 and improving the limiting effect.

[0082] like Fig. 9 and Fig.11 As shown, in some embodiments, optionally, the driving unit 1 includes: a stator 10, on which a winding is provided; a rotor 12, which is arranged inside the stator 10 or outside the stator 10, and the output shaft 2 is connected to the rotor 12.

[0083] In this embodiment, the driving unit 1 includes a stator 10 and a rotor 12 arranged inside or outside the stator 10. The output shaft 2 is connected to the rotor 12. When the winding is energized, the rotor 12 can rotate under the action of the magnetic field, thereby driving the output shaft 2 to rotate and realizing power output.

[0084] like Fig.12 , Fig.13 , Fig.14 and Fig.15 As shown, according to an embodiment of the present invention, a cooking device 200 is also proposed, comprising: a motor assembly 100 as proposed in any of the above embodiments.

[0085] The cooking device 200 provided by the present invention comprises the motor assembly 100 proposed in any of the above embodiments, and therefore has all the beneficial effects of the motor assembly 100.

[0086] like Fig. 9 As shown, in some embodiments, optionally, the cooking device 200 further includes: a shell 300 , the motor assembly 100 is disposed in the shell 300 , and the bracket 3 is supported by the shell 300 .

[0087] In this embodiment, the cooking device 200 further includes a housing 300 , the motor assembly 100 is disposed in the housing 300 , and the bracket 3 is supported on the housing 300 , thereby supporting the output shaft 2 .

[0088] Optionally, the driving part 1 of the motor assembly 100 is installed in the housing 300 through a mounting structure, and the bracket 3 is directly supported on the housing 300 or supported on the housing 300 through other mounting parts to support the output shaft 2.

[0089] Optionally, the housing 300 includes a cooking cavity and an installation cavity, the motor assembly 100 is disposed in the installation cavity, and the bracket 3 is supported on the inner wall surface of the installation cavity.

[0090] In some embodiments, optionally, the cooking device 200 includes any one of a microwave oven, an air fryer, a microwave air fryer, and a microwave oven.

[0091] In this embodiment, the cooking device 200 includes any one of a microwave oven, an air fryer, a microwave air fryer, and a microwave steam oven to reduce the noise of the microwave oven, the air fryer, the microwave air fryer, and the microwave steam oven during operation and improve cooking efficiency.

[0092] Optionally, the cooking device 200 includes a hot air assembly, and the output shaft 2 is connected to the hot air assembly to drive the fan in the hot air assembly to rotate so as to deliver hot air to the cooking cavity in the housing 300. Alternatively, the cooking device 200 includes a microwave generating unit, and the microwave generating unit includes a stirring member, and the output shaft 2 is connected to the stirring member to achieve stirring of the microwaves, thereby achieving uniform heating in the cooking cavity.

[0093] Optionally, the cooking device 200 further includes a fan 400 , and the motor assembly 100 is inserted into the shell 300 through the rear wall of the shell 300 and connected to the fan 400 to drive the fan 400 to rotate so as to deliver hot air into the cooking cavity of the shell 300 .

[0094] Optionally, the motor assembly 100 is a brushless DC motor. The brushless DC motor has a high rotation speed, and can provide a large air volume when connected to a hot air assembly, and can improve the stirring efficiency when connected to a stirring element.

[0095] In a specific application, the brushless DC motor includes a stator 10, a rotor 12, bearings (such as a first bearing 5 and a second bearing 6), a three-claw bracket (such as bracket 3), a retaining spring, a retaining ring, a self-cooling fan blade (such as fan blade 4), etc. The stator 10 and the rotor 12 provide rotational power for the output shaft 2, and the output shaft 2 is fixedly connected to the three-claw bracket through a bearing. In order to better dissipate the heat of the motor winding, a self-cooling fan blade is added, so that during the operation of the motor assembly 100, the self-cooling fan blade rotates to cool the winding.

[0096] The present application adopts an intermediate support method to support the output shaft 2 through double bearings, and the double bearings maintain a certain distance, so that the support surface is increased, balancing the load weight of the stator 10, the rotor 12 and the end of the output shaft 2, thereby effectively avoiding the output shaft 2 from being overloaded, and then avoiding the impact during operation caused by the overload, ensuring that the operation is quieter, more stable and reliable.

[0097] The self-cooling blades are prone to axial loosening due to vibration and wind resistance during operation. When the self-cooling blades are loose, abnormal noise is easily generated and interference is generated with the bracket 3, thereby causing the motor to fail. Therefore, the present application processes grooves (such as the first groove 20 and the second groove 22) on the output shaft 2, fixes the retaining ring and the stop ring, thereby clamping the self-cooling blades. When an axial loosening force is generated, the stop ring is used to limit the axial position, thereby offsetting the axial loosening force, so that the DC motor will not loosen even after a long period of operation, greatly increasing the reliability of the DC motor operation.

[0098] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0099] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0100] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A motor assembly for a cooking device, characterized in that: The motor assembly comprises: Drive unit; An output shaft, the output shaft is connected to the driving part, and the driving part can drive the output shaft to rotate; A bracket, the bracket is located at one side of the driving part along the axial direction of the output shaft, the bracket includes a mounting hole, the output shaft is inserted into the mounting hole and can rotate relative to the mounting hole, and the bracket is used to support the output shaft; The fan blades are arranged on the output shaft, and the output shaft can drive the fan blades to rotate. The fan blades are arranged opposite to the driving part and are used to cool the driving part.

2. The motor assembly according to claim 1, characterized in that: The support comprises: A connecting portion, wherein the connecting portion is provided with the mounting hole; A plurality of support rods are arranged on the connection portion, and the plurality of support rods are arranged at intervals along the circumference of the connection portion.

3. The motor assembly according to claim 2, characterized in that: The number of the support rods is at least three, and the at least three support rods are evenly distributed along the circumference of the connecting portion.

4. The motor assembly according to claim 1, characterized in that: Also includes: A first bearing is disposed in the mounting hole; The second bearing is arranged in the mounting hole. Along the axial direction of the output shaft, the first bearing and the second bearing are spaced apart. The output shaft passes through the first bearing and the second bearing and is rotatably connected with the first bearing and the second bearing.

5. The motor assembly according to claim 4, characterized in that: Along the axial direction of the output shaft, the first bearing is located at one end of the mounting hole, and the second bearing is located at the other end of the mounting hole.

6. The motor assembly according to any one of claims 1 to 5, characterized in that: The fan blade is located at a side of the bracket away from the driving part.

7. The motor assembly according to any one of claims 1 to 5, characterized in that: Also includes: A first stopper, provided on the output shaft, wherein the first stopper is located at one side of the fan blade along the axial direction of the output shaft; A second limiting member is provided on the output shaft. The second limiting member is located at the other side of the fan blade along the axial direction of the output shaft. The fan blade is clamped between the first limiting member and the second limiting member.

8. The motor assembly according to claim 7, characterized in that The output shaft is provided with a first groove and a second groove, a portion of the first limit member is located in the first groove, and another portion cooperates with the fan blade stop, a portion of the second limit member is located in the second groove, and another portion cooperates with the fan blade stop.

9. The motor assembly according to claim 7, characterized in that: One of the first limiting member and the second limiting member is a backstop ring, and the other is a retaining spring.

10. The motor assembly according to claim 9, characterized in that Also includes: A gasket is sleeved on the output shaft and located between the retaining spring and the fan blade.

11. The motor assembly according to any one of claims 1 to 5, characterized in that: The driving unit comprises: A stator, wherein a winding is provided on the stator; The rotor is arranged inside the stator or outside the stator, and the output shaft is connected to the rotor.

12. A cooking device, characterized in that: include: A motor assembly as claimed in any one of claims 1 to 11.

13. The cooking device according to claim 12, characterized in that: Also includes: The motor assembly is arranged in the housing, and the bracket is supported by the housing.

14. The cooking device according to claim 12, characterized in that: The cooking device includes any one of a microwave oven, an air fryer, a microwave air fryer, and a microwave steamer.

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