Microwave oven and turntable assembly therefor

Abstract

The utility model relates to kitchen appliance technical field, concretely provides a microwave oven and disc assembly thereof, solves the problem that the disc of existing microwave oven is easy to be frustrated or skid in the use process. The disc assembly provided by the utility model comprises a disc body and a roller, a convex structure is formed on the bottom of the disc body and protrudes downward, a plurality of mounting shafts extending along the radial direction of the disc body are arranged on the convex structure, and the roller is rotatably mounted on the mounting shafts. The convex structure is formed by extending part of the bottom wall of the disc body, realizes the integration of the conventional disc body and the rotating ring into an integrated structure, and effectively solves the problem that the conventional disc and the rotating ring are easy to be frustrated or skid when bearing food.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, specifically providing a microwave oven and its turntable assembly. Background Technology

[0002] Turntable microwave ovens are a common type of microwave oven. Their core design features a rotating ring at the bottom of the internal turntable (glass plate), a structure crucial for its proper operation. However, in actual operation, the turntable's rotation is easily affected by various factors, impacting its performance and cooking results. For example, poor contact between the ring and the turntable leading to ring wear, ring deformation, differences in the weight of the food, the food's placement, and the presence of grease on the contact surface between the ring and the turntable can all cause the turntable to rotate unevenly. Once the turntable's rotation is obstructed, the food cannot be heated evenly, affecting the cooking outcome.

[0003] Furthermore, each time the turntable is removed and reinstalled, it must be precisely aligned with the pivot in the center of the cavity, a rather challenging operation. Improper installation can lead to uneven turntable rotation and exacerbate uneven heating of the food.

[0004] Even more problematic is that when the food placed on the turntable is heavy, it is prone to jerking and slipping during rotation. In severe cases, the turntable may even stop rotating completely, which not only prevents the food from cooking properly but also poses a risk of fire and other safety hazards. Utility Model Content

[0005] The present invention aims to solve the above-mentioned technical problems, namely, to at least solve the problem that the turntable of the existing microwave oven is prone to jerking or slipping during use.

[0006] In a first aspect, the present invention provides a turntable assembly for a microwave oven, the turntable assembly comprising:

[0007] The turntable body has a protruding structure at its bottom, and the protruding structure is provided with a plurality of mounting shafts extending radially along the turntable body.

[0008] A roller, which is rotatably mounted on the mounting shaft.

[0009] The turntable assembly provided by this utility model features a raised structure formed by the bottom of the turntable body protruding downwards. This raised structure is equipped with a mounting shaft for installing rollers. This design not only perfectly meets the functional requirement of smooth rotation of the turntable body within the microwave oven, but also integrates the traditionally separate turntable body and rotating ring into a single structure. Compared to traditional separate designs, this integrated structure not only improves the stability of food placement and effectively solves the safety hazards such as slippage and offset that easily occur between conventional glass turntables and rotating rings when carrying food, but also simplifies the user's operation process. Users only need to place the turntable once to complete the installation into the microwave oven cavity. Furthermore, during microwave oven operation, there is no need to consider the traditional coordination between the turntable body and rotating ring, which helps prevent jerking and slippage during turntable operation, ensuring the smoothness and reliability of microwave oven use, thereby improving the user experience.

[0010] In some feasible embodiments of the turntable assembly described above, the roller is detachably connected to the mounting shaft.

[0011] In some feasible embodiments of the turntable assembly described above, the protrusion structure is provided with multiple sets of elastic portions, and multiple elastic elements in each set of elastic portions are arranged in a ring and thus construct a mounting shaft.

[0012] In some feasible embodiments of the turntable assembly described above, the bottom of the turntable body is provided with a clearance groove extending from the edge to the root of the mounting shaft.

[0013] In some feasible embodiments of the turntable assembly described above, the turntable body is made of high-temperature resistant plastic.

[0014] In some feasible embodiments of the turntable assembly described above, the protruding structure is a ring structure concentric with the turntable body.

[0015] In a second aspect, the present invention also provides a microwave oven, which includes the turntable assembly described in any of the foregoing technical solutions.

[0016] In some feasible embodiments of the microwave oven described above, the microwave oven further includes a housing, the interior of which forms a cavity, the bottom wall of which is provided with a turntable mounting groove, the roller and the protruding structure being disposed within the turntable mounting groove; the bottom wall of the turntable mounting groove is provided with a downwardly recessed drainage groove, and the drainage groove is provided with a drainage hole.

[0017] In some feasible embodiments of the microwave oven described above, the sidewalls of the turntable mounting groove are inclined so that the turntable mounting groove gradually tapers from top to bottom; and / or

[0018] The sidewalls of the drainage channel are inclined so that the drainage channel gradually tapers from top to bottom.

[0019] In some feasible embodiments of the microwave oven described above, the microwave oven further includes a driving component, which is disposed below the bottom wall of the cabinet, and the turntable body is drivenly connected to the driving component;

[0020] The drive component is provided with a connector, the connector is provided with a positioning slot or a positioning protrusion, and the turntable body is provided with a matching positioning protrusion or positioning slot.

[0021] Those skilled in the art will understand that since the microwave oven includes the turntable assembly in any of the aforementioned technical solutions, it possesses all the technical effects that the aforementioned turntable assembly can achieve, and will not be repeated here. Attached Figure Description

[0022] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0023] Figure 1 A three-dimensional structural diagram of the turntable assembly of a microwave oven provided in an embodiment of this utility model;

[0024] Figure 2 A top view of the turntable assembly of a microwave oven provided in an embodiment of the present utility model;

[0025] Figure 3 A schematic diagram illustrating the disassembly and assembly of the turntable assembly of a microwave oven provided in an embodiment of this utility model;

[0026] Figure 4 for Figure 3 Enlarged view of point A;

[0027] Figure 5 A three-dimensional structural diagram of a microwave oven provided for an embodiment of this utility model;

[0028] Figure 6 for Figure 5 A structural diagram showing the structure after removing part of the cabinet door;

[0029] Figure 7 for Figure 6 A schematic diagram of the structure after the turntable assembly has been removed;

[0030] Figure 8 for Figure 7 A schematic diagram of the structure after the connectors have been removed.

[0031] 1. Turntable assembly; 11. Turntable body; 111. Clearance groove; 112. Positioning bracket protrusion; 12. Protruding structure; 13. Mounting shaft; 131. Elastic element; 14. Roller; 2. Housing; 21. Cavity; 22. Turntable mounting groove; 23. Drainage groove; 231. Drainage hole; 24. Boss; 241. Through hole; 25. Housing door; 3. Drive component; 31. Connector; 311. Positioning bracket groove. Detailed Implementation

[0032] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific applications. To better illustrate the present invention, numerous specific details are provided in the following detailed description. Those skilled in the art should understand that the present invention can be implemented even without certain specific details.

[0033] In the description of this utility model, terms such as "upper," "lower," "inner," "outer," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the actual direction or positional relationships in practical application. These terms are used merely for ease of description and do not indicate or imply that the device to be protected must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, ordinal numbers such as "first" and "second" are used only for convenience of explanation and are not used to indicate or imply relative importance.

[0034] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation" and "connection" 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 this utility model according to the specific circumstances.

[0035] Please see Figures 1 to 4 The present invention provides a turntable assembly for a microwave oven. The turntable assembly 1 includes a turntable body 11 and a roller 14. The bottom of the turntable body 11 protrudes downward to form a protrusion structure 12. The protrusion structure 12 is provided with a plurality of mounting shafts 13 extending radially along the turntable body 11. The roller 14 is rotatably mounted on the mounting shafts 13.

[0036] Specifically, the raised structure 12 is formed by extending part of the bottom wall of the turntable body 11, and the mounting shaft 13 is formed by extending part of the side wall of the raised structure 12. Furthermore, the turntable body 11, the raised structure 12, and the mounting shaft 13 are made of the same material, that is, the turntable body 11, the raised structure 12, and the mounting shaft 13 are integrally formed.

[0037] Furthermore, the turntable body 11 is made of high-temperature resistant plastic material. Preferably, the turntable body 11 is made of high-temperature resistant plastic materials such as polyphenylene sulfide (PPS) and modified polyphenylene sulfide (PPO / PPE). It has the advantages of mature processing technology and low processing cost. In the molten state, it has low viscosity and high fluidity, which can fully fill the mold cavity. It is especially suitable for preparing the protruding structure 12 and mounting shaft 13 located at the bottom of the turntable body 11. Moreover, it can maintain stable physical and chemical properties under high temperature processing environment, and is not easy to deform or decompose. It can ensure dimensional accuracy and structural integrity during the molding process, and can realize the one-time molding of complex structures composed of turntable body 11, protruding structure 12 and mounting shaft 13.

[0038] In one embodiment, the protruding structure 12 is a continuous, uninterrupted annular structure, such as... Figure 1 As shown, the raised structure 12 is a ring structure concentric with the turntable body 11. This ensures uniform force distribution, enhances the stability and coordination of the overall structure, allows the turntable to maintain better balance during rotation, reduces vibration and wear caused by structural asymmetry or uneven force, thereby improving the smoothness and reliability of the turntable during operation and extending its service life.

[0039] In another embodiment, the protruding structure 12 is not a complete annular structure, but is composed of multiple discontinuous, intermittently distributed arc-shaped structures, each arc-shaped structure having a mounting shaft 13 extending radially along the turntable body 11. This structure achieves the technological goal of integrally molding the turntable body 11, the protruding structure 12, and the mounting shaft 13, while also ensuring the turntable body 11 can rotate smoothly within the microwave oven.

[0040] In this embodiment, there are at least three rollers 14, which are rotationally symmetrically distributed around the geometric center of the raised structure 12. Similarly, there are at least three mounting shafts 13 on the raised structure 12, which are also rotationally symmetrically distributed around the geometric center of the raised structure 12. This effectively distributes the load, enhances the stability and load-bearing capacity of the entire turntable assembly 1, and ensures smooth rotation of the turntable during operation. Simultaneously, the design of the rollers 14 replaces sliding friction with rolling friction, effectively reducing the resistance generated during rotation, minimizing energy loss during transmission and wear between components, thereby improving power transmission efficiency and extending the service life of the turntable.

[0041] Furthermore, the roller 14 is detachably connected to the mounting shaft 13. Specifically, as shown in the figure... Figures 1 to 4 As shown, multiple sets of elastic sections are provided on the outer side of the protrusion structure 12. Multiple elastic elements 131 in each set of elastic sections are arranged in a ring and thus form a mounting shaft 13. Each set of elastic sections includes 2 to 4 elastic elements 131 arranged at intervals. The free end of the elastic element 131 (i.e. the end away from the protrusion structure 12) is provided with an inclined surface. The inclined surfaces of multiple elastic elements 131 are combined to form a conical surface, which is used to guide the mounting shaft 13 through the shaft hole of the roller 14, so that the roller 14 can be rotatably mounted on the mounting shaft 13.

[0042] During assembly, the user only needs to apply appropriate external force to slowly slide the roller 14 onto the mounting shaft 13. During this process, the elastic element 131 will undergo compression deformation under the external force, thereby reducing the size of the mounting shaft 13 and allowing it to easily and smoothly pass through the pre-set shaft hole on the roller 14. After the mounting shaft 13 has completely passed through the shaft hole, the elastic element 131, due to its own elastic recovery characteristics, quickly returns to its original shape, thus securely mounting the roller 14 onto the mounting shaft 13. When the roller 14 experiences wear or damage due to long-term use, since the roller 14 and the mounting shaft 13 are detachably connected, it is not necessary to replace the entire turntable body 11. Simply use simple tools or manually remove the damaged roller 14 from the mounting shaft 13 and replace it with a new roller 14. This greatly shortens maintenance time, improves maintenance efficiency, and effectively extends the service life of the turntable body 11.

[0043] Furthermore, the bottom of the turntable body 11 is provided with clearance grooves 111 extending from the edge to the root of the mounting shaft 13, and the number of clearance grooves 111 corresponds one-to-one with the number of mounting shafts 13. The root of the mounting shaft 13 is the part where the mounting shaft 13 connects to the protruding structure 12. The clearance grooves 111 provide space for the rollers 14 to rotate, ensuring that the rollers 14 mounted on the turntable body 11 are not interfered with by surrounding structures during operation, thus ensuring that the rollers 14 can rotate normally and smoothly, effectively improving the overall stability and smoothness of the turntable's operation. Moreover, the clearance grooves 111 also serve a guiding function, providing a clear guiding channel for the rollers 14 to be installed on the mounting shaft 13. During installation, the operator can accurately fit the rollers 14 onto the mounting shaft 13 according to the extension direction of the clearance grooves 111, which helps to shorten installation time, improve installation efficiency, and reduce the failure rate caused by improper installation.

[0044] Please see Figures 5 to 8 The present invention also provides a microwave oven, which includes the turntable assembly of any of the foregoing technical solutions.

[0045] The microwave oven also includes a housing 2, inside which a cavity 21 is formed. The cavity 21 has an opening with a closable door 25, and a turntable assembly 1 is rotatably mounted within the cavity 21. Figure 8 As shown, the bottom wall of the cavity 21 is provided with a recessed turntable mounting groove 22. The roller 14 and the protruding structure 12 are disposed in the turntable mounting groove 22. The bottom wall of the turntable mounting groove 22 is provided with a further recessed drainage groove 23, and the drainage groove 23 is provided with a drainage hole 231. By providing a recessed turntable mounting groove 22 at the bottom of the microwave oven cavity 21, and further recessing the turntable mounting groove 22 to form a low-level drainage groove 23, this design allows water generated during microwave oven operation to naturally collect in the drainage groove 23, and then smoothly drain out to the outside of the cavity 21 through the pre-set drainage hole 231 in the drainage groove 23.

[0046] In this embodiment, there are multiple drainage holes 231 arranged sequentially around the circumference of the drainage channel 23. These drainage holes 231 can be evenly distributed at equal angles or, depending on actual needs, non-uniformly distributed at unequal angles. The multiple drainage holes 231 are at the same vertical height. When water accumulates in the drainage channel 23, it can drain simultaneously from multiple directions. Compared to a single drainage hole 231, the multi-hole design accelerates water drainage, effectively preventing water from stagnating in the drainage channel 23 for extended periods and reducing problems such as bacterial growth and odor caused by water accumulation.

[0047] Furthermore, such as Figure 8 As shown, the sidewalls of the turntable mounting groove 22 are inclined so that it gradually tapers from top to bottom. When water accumulated during microwave oven operation drips onto the bottom wall of the cavity 21, the inclined sidewalls of the turntable mounting groove 22 form a guide surface, which, under the action of gravity, helps guide the water in the cavity 21 to converge into the turntable mounting groove 22. The turntable mounting groove 22 has a structure that gradually tapers from top to bottom, making the bottom area of ​​the turntable mounting groove 22 relatively small, allowing water to concentrate more easily at the bottom, which helps guide the water to flow into the drain trough 23.

[0048] Furthermore, such as Figure 8 As shown, the sidewalls of the drainage trough 23 are inclined so that it gradually tapers from top to bottom. After the water collects in the turntable mounting slot 22, the inclined sidewalls of the drainage trough 23 further form a guiding surface, which guides the water in the turntable mounting slot 22 to converge at the bottom of the drainage trough 23, thus accelerating the drainage process. The gradually tapering structure of the drainage trough 23 reduces the bottom space, increasing the pressure on the water flow at the bottom and thus increasing the flow velocity and pressure. This enhanced force helps the water flow more smoothly through the drain hole 231 to the outside of the cavity 21, effectively improving the efficiency of water removal.

[0049] In this embodiment, as Figure 5 As shown, the microwave oven also includes a drive unit 3, which is located below the bottom wall of the housing 2. The turntable body 11 is drivenly connected to the drive unit 3. The drive unit 3 is specifically a motor, and the bottom wall of the housing 2 protrudes downward to form a mounting base for the motor. The drive unit 3 can provide stable and continuous power support for the rotation of the turntable assembly 1 when performing work tasks, ensuring that the turntable assembly 1 maintains an efficient and stable working state during operation.

[0050] Furthermore, such as Figure 2 and Figure 7 As shown, the drive component 3 is equipped with a connector 31, which has a positioning slot 311 (or positioning protrusion 112). The turntable body 11 has a matching positioning protrusion 112 (or positioning slot 311). The positioning slot 311 and positioning protrusion 112 play an important role in positioning and connecting the drive component 3 connector 31 and the microwave oven turntable body 11. During installation, the positioning slot 311 and positioning protrusion 112 act as precise guide markers, quickly determining the relative position between the two. This ensures that the turntable body 11 rotates around the correct central axis after installation, avoiding eccentric rotation. This allows operators to quickly and accurately install the turntable body 11 onto the drive component 3 without complicated tools or tedious adjustments, improving installation efficiency. Furthermore, during microwave oven operation, the positioning protrusion 112 and positioning slot 311 effectively prevent the drive component 3 and the turntable body 11 from sliding or loosening relative to each other, enhancing connection stability and structural strength, ensuring smooth turntable rotation, and allowing food to be heated evenly. Moreover, this design facilitates the disassembly and cleaning of the turntable, while avoiding safety hazards such as accidental rotation causing injury or parts falling off, reducing component wear, and extending the service life of the drive unit 3, the turntable body 11, and the entire microwave oven.

[0051] In addition, please see Figure 7 and Figure 8 A boss 24 is provided in the middle of the bottom wall of the cavity 21. The boss 24 has a through hole 241 for the connector 31 to pass through. After the connector 31 passes through the through hole 241, it connects to the turntable body 11. The boss 24 can provide a stable support platform for the connector 31. After the connector 31 passes through the through hole 241 on the boss 24, its lower part is supported by the boss 24, which prevents the connector 31 from sagging or shifting due to its own weight or vibration caused by the rotation of the turntable. This ensures that the connector 31 is always in the correct position and can stably transmit power to the turntable body 11, so that the turntable body 11 can rotate smoothly around a fixed axis during operation without shaking or shifting, thus ensuring the uniform heating of food on the turntable.

[0052] Furthermore, such as Figure 8As shown, with a turntable mounting groove 22 and a drainage groove 23 provided on the bottom wall of the cavity 21, a boss 24 is located in the middle of the drainage groove 23, and the diameter of the boss 24 gradually increases from top to bottom. Providing a boss 24 in the middle of the drainage groove 23 helps increase the local strength of the middle part of the bottom wall of the cavity 21. When the turntable rotates, it generates certain vibrations and stresses. The boss 24 can disperse these stresses, reducing deformation and damage to the bottom wall of the cavity 21 and extending the service life of the microwave oven. The design of the boss 24's diameter gradually increasing from top to bottom helps guide water flow towards its bottom, allowing the water flow to be more concentrated towards the drain hole 231 of the drainage groove 23, thereby accelerating the drainage speed and preventing water accumulation in the cavity 21. In addition, when a small amount of water flowing from the turntable mounting groove 22 into the drainage groove 23 impacts the side wall of the boss 24, it will also smoothly slide down the side wall into the drainage groove 23, ensuring smooth drainage.

[0053] The turntable assembly 1 provided by this utility model has a raised structure 12 formed by the bottom of the turntable body 11 protruding downwards. The raised structure 12 is equipped with a mounting shaft 13 for mounting the rollers 14. This design not only perfectly meets the functional requirement of the turntable body 11 rotating smoothly in the microwave oven, but also integrates the traditionally separate turntable body 11 and the rotating ring into a single structure. Compared with the traditional separate design, this integrated structure not only improves the stability of food placement and effectively solves the safety hazards such as slippage and displacement that easily occur between conventional glass turntables and rotating rings when carrying food, but also simplifies the user's operation process. The user only needs to place the turntable once to complete the installation in the microwave oven cavity 21 (i.e., there is no need to place the rotating ring and turntable body 11 separately twice). During the operation of the microwave oven, there is no need to consider the coordination problem between the traditional turntable body 11 and rotating ring, which helps to prevent the turntable from jerking or slipping during operation, ensuring the smoothness and reliability of the microwave oven, thereby improving the user experience.

[0054] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A turntable assembly for a microwave oven, characterized in that, The turntable assembly (1) includes: The turntable body (11) has a protruding structure (12) at its bottom, and the protruding structure (12) is provided with a plurality of mounting shafts (13) extending radially along the turntable body (11). A roller (14) is rotatably mounted on the mounting shaft (13).

2. The turntable assembly according to claim 1, characterized in that, The roller (14) is detachably connected to the mounting shaft (13).

3. The turntable assembly according to claim 2, characterized in that, The protruding structure (12) is provided with multiple sets of elastic parts, and multiple elastic elements (131) in each set of elastic parts are arranged in a ring and thus form a mounting shaft (13).

4. The turntable assembly according to claim 1, characterized in that, The bottom of the turntable body (11) is provided with a clearance groove (111) extending from the edge to the root of the mounting shaft (13).

5. The turntable assembly according to claim 1, characterized in that, The turntable body (11) is made of high-temperature resistant plastic.

6. The turntable assembly according to any one of claims 1 to 5, characterized in that, The protruding structure (12) is a ring structure concentric with the turntable body (11).

7. A microwave oven, characterized in that, The microwave oven includes the turntable assembly as described in any one of claims 1 to 6.

8. The microwave oven according to claim 7, characterized in that, The microwave oven also includes a housing (2), the interior of which is formed a cavity (21), the bottom wall of which is provided with a turntable mounting groove (22), and the roller (14) and the protruding structure (12) are disposed in the turntable mounting groove (22); The bottom wall of the turntable mounting groove (22) is provided with a downwardly recessed drainage groove (23), and the drainage groove (23) is provided with a drainage hole (231).

9. The microwave oven according to claim 8, characterized in that, The sidewalls of the turntable mounting groove (22) are inclined so that the turntable mounting groove (22) gradually tapers from top to bottom; and / or The sidewalls of the drainage trough (23) are inclined so that the drainage trough (23) gradually shrinks from top to bottom.

10. The microwave oven according to claim 8, characterized in that, The microwave oven also includes a drive unit (3), which is located below the bottom wall of the cabinet (2), and the turntable body (11) is driven to be connected to the drive unit (3); The drive unit (3) is provided with a connector (31), the connector (31) is provided with a positioning slot (311) or a positioning protrusion (112), and the turntable body (11) is provided with a matching positioning protrusion (112) or positioning slot (311).

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