Roller assembly, roller support and microwave oven

Abstract

The utility model relates to the technical field of microwave ovens, and provides an idler wheel assembly, an idler wheel support and a microwave oven, the idler wheel assembly comprises an idler wheel inner ring and an idler wheel outer ring, the idler wheel inner ring is integrally formed by metal materials or plastic materials which do not absorb microwaves, the roller outer ring is integrally formed by silica gel or resin materials which have elastic deformation and can be used in the microwave environment, the roller outer ring is arranged on the outer side of the roller inner ring in a wrapping mode, and the roller outer ring and the roller inner ring are detachably connected or integrally formed in an injection molding mode. According to the roller component, the roller bracket and the microwave oven, the structures of the roller component and the roller bracket are improved, so that the wear resistance and the deformation resistance are enhanced, the noise and the vibration are reduced, the roller component and a contact surface are prevented from being damaged, the service life is prolonged, and the environment-friendly design requirement of the roller component is met; and an important contribution is made for performance improvement and use experience optimization of household electrical appliances such as microwave ovens and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave ovens, and particularly relates to a roller assembly, a roller bracket and a microwave oven. Background Art

[0002] As an indispensable cooking device in modern kitchens, the microwave oven's function of evenly heating food is deeply loved by users. To achieve uniform heating of food, a turntable motor is usually arranged at the bottom of the cavity of the microwave oven, and the motor drives the glass turntable in the microwave oven cavity to rotate. This design enables the food placed on the glass turntable to evenly absorb microwaves, thereby achieving the effect of uniform heating.

[0003] However, when the existing microwave oven technology realizes this function, there are still some technical problems and challenges. First of all, in order to ensure the stable rotation of the circular glass turntable in the cavity, the existing microwave ovens generally adopt a support structure for assistance. For example, support structures such as Y-shaped and O-shaped are placed between the glass turntable and the cavity. Circular rollers are arranged on these support structures, and when the glass turntable rotates, the rollers slide relative to the cavity.

[0004] It should be noted that the currently widely used material for these rollers is polytetrafluoroethylene. Although polytetrafluoroethylene performs excellently in terms of wear resistance, self-lubrication and corrosion resistance, due to the limited fluorine substances it contains, it does not meet the environmental protection requirements of more and more regions and countries, which limits the export and sales of microwave ovens.

[0005] In addition, during the sliding process of the rollers, it is easy to generate friction with the powder coating layer on the surface of the cavity metal material, resulting in the peeling off of the powder coating layer, which not only affects the beauty of the microwave oven but also may affect its service life. At the same time, if metal materials are used for the rollers, although the wear resistance and strength are guaranteed, in a microwave environment, the contact between metals may cause arcing, which not only damages the microwave oven but also poses a safety hazard.

[0006] The existing microwave oven roller technology faces challenges in terms of environmental protection requirements, material selection, service life and safety. To solve these problems, the industry urgently needs a new type of roller technology that can meet environmental protection standards and ensure the use performance and safety of microwave ovens. Summary of the Utility Model

[0007] In view of this, the utility model provides a kind of, aiming to propose a roller assembly, a roller bracket and a microwave oven, aiming to solve the problems existing in the roller structure of traditional microwave ovens in terms of wear resistance, anti-deformation ability and use stability in a microwave environment.

[0008] To achieve the above object, the technical solution of the utility model is realized as follows:

[0009] The first object of the present utility model is to disclose a roller assembly, which includes an inner roller ring and an outer roller ring. The inner roller ring is integrally formed with a metal material or a plastic material that does not absorb microwaves. The outer roller ring is integrally formed with a silicone or resin material that has elastic deformation and can be used in a microwave environment. The outer roller ring is arranged in a wrapped shape outside the inner roller ring, and the outer roller ring is detachably connected to or integrally formed by injection molding with the inner roller ring.

[0010] Further, the inner roller ring includes a first support shaft and a first limiting plate, and the first limiting plate is arranged outside the first support shaft; the outer roller ring includes a wrapping ring, and a first mounting hole is arranged on the inner side of the wrapping ring close to the central axis. The first support shaft is inserted into the first mounting hole and is limited by the first limiting plate.

[0011] Further, the inner roller ring further includes a second limiting plate. The first limiting plate and the second limiting plate are respectively arranged at opposite ends of the first support shaft along the central axis direction. A first limiting groove is formed outside the first limiting plate, the second limiting plate and the first support shaft. The first mounting hole of the outer roller ring is sleeved on the first support shaft.

[0012] Further, a second limiting groove is arranged at each of the opposite ends of the wrapping ring perpendicular to the central axis. The two second limiting grooves are used to accommodate and limit the first limiting plate and the second limiting plate.

[0013] Further, a first connection hole is arranged at a position of the first support shaft close to the central axis.

[0014] Further, the distance between the outer diameter of the inner roller ring and the outer diameter of the outer roller ring is D, and D≥0.5mm.

[0015] The third object of the present utility model is to disclose a roller bracket, which includes the roller assembly as described above and a support frame. At least two clamping members are arranged on the support frame, and the clamping members pass through the first connection hole in the roller assembly and are detachably fixed.

[0016] Further, the support frame includes a support frame body. First limiting bosses and second limiting bosses are arranged at the positions where the clamping members are arranged on the support frame body. The first limiting bosses and the second limiting bosses are arranged at the upper and lower ends of the support frame body close to the side of the clamping members. A third limiting groove is arranged on the side of the first limiting bosses and the second limiting bosses close to the clamping members. The first limiting plate and the second limiting plate of the inner roller ring in the roller assembly are respectively limited by the third limiting groove and the clamping members.

[0017] Furthermore, the cross-section of the support frame body is set to be an oblong, and a first mounting boss is set on the outer side surface of the support frame body away from its center. The support frame body, the first mounting boss, the first limiting boss and the second limiting boss form a cross structure. The support frame body, the first mounting boss, the first limiting boss and the second limiting boss are integrally formed, and the clip is detachable or integrally formed on the first mounting boss.

[0018] The third object of the utility model is to disclose a microwave oven, comprising a cavity, in which a roller bracket and a turntable assembly as described above are arranged, and the roller bracket is arranged in the cavity and supports the turntable assembly.

[0019] Compared with the prior art, the roller assembly, roller bracket and microwave oven described in the utility model have the following advantages:

[0020] The roller assembly, roller bracket and microwave oven described in the utility model improve the structures of the roller assembly and the roller bracket. The roller assembly adopts different materials to form the roller inner ring and the roller outer ring, thereby enhancing the wear resistance and deformation resistance, while reducing noise and vibration, protecting the roller assembly and the contact surface from damage, and extending the service life; the design of the roller bracket combines stability and flexibility, and realizes rapid installation and precise positioning of the roller assembly through structures such as clamping parts and limiting bosses, effectively preventing the roller from shifting or shaking during use, and improving the stability and load-bearing capacity of the overall structure, which not only improves the practicality and durability of the roller assembly and the roller bracket, but also makes important contributions to the performance improvement and user experience optimization of household appliances such as microwave ovens. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the roller assembly according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the exploded structure of the roller assembly according to an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the roller bracket according to an embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of a cross section of the connection between the support frame and the roller assembly in the roller bracket according to the embodiment of the utility model;

[0026] Figure 5 is Figure 4 A partial enlarged structural schematic diagram of the cross-section at the connection between the middle support frame and the roller assembly;

[0027] Figure 6 is a structural schematic diagram of the half-open door state of the microwave oven according to an embodiment of the present invention;

[0028] Figure 7 is Figure 6 An exploded structural schematic diagram of the turntable assembly and the roller bracket shown in;

[0029] Explanation of reference numerals:

[0030] 100 - roller assembly; 200 - roller bracket; 300 - door assembly; 400 - control assembly; 500 - cavity; 600 - turntable assembly; 1 - inner ring of the roller; 101 - first support shaft; 102 - first limiting plate; 103 - first connection hole; 104 - first arc transition part; 105 - second limiting plate; 106 - first limiting groove; 2 - outer ring of the roller; 201 - wrapping ring; 202 - first mounting hole; 203 - second limiting groove; 3 - support frame; 301 - support frame body; 302 - first limiting boss; 303 - second limiting boss; 304 - third limiting groove; 305 - first mounting boss; 4 - clamping part; 5 - first mounting groove; 6 - connector. Detailed implementation manners

[0031] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention will be described in detail below with reference to specific drawings.

[0032] It should be noted that all terms indicating directions and positions in the present invention, such as: "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "bottom", "lateral", "longitudinal", "center", etc., are only used to explain the relative position relationship and connection situation between components in a certain specific state (as shown in the drawings), and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0033] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0035] Embodiment 1

[0036] As Figures 1 - 2 shown, the present application discloses a roller assembly 100, which includes a roller inner ring 1 and a roller outer ring 2. The roller inner ring 1 is integrally formed of a metal material or a plastic material that does not absorb microwaves. The roller outer ring 2 is integrally formed of a silicone or resin material that has elastic deformation and can be used in a microwave environment. The roller outer ring 2 is arranged in a wrapped shape outside the roller inner ring 1, and the roller outer ring 2 is detachably connected to the roller inner ring 1 or integrally formed by injection molding.

[0037] The roller assembly 100 disclosed in the present application is composed of two different materials, namely the roller inner ring 1 and the roller outer ring 2. The roller inner ring 1 is selected from a metal material (such as conventional materials in the prior art like stainless steel and aluminum alloy) or a special plastic material that does not absorb microwaves (such as conventional materials in the prior art like SPS and BMC materials). Such a selection enables the roller inner ring to be used in a microwave environment for a long time without being interfered with or damaged by microwaves. At the same time, the roller outer ring 2 is made of a silicone or resin material. Such materials not only have a soft texture and elastic deformation characteristics, but also can remain stable in a microwave environment. Due to the softness and elasticity of the silicone or resin material, when the roller outer ring 2 wraps around the outside of the roller inner ring 1 and contacts the turntable assembly 600 (glass disk) and the powder spraying cavity, it will not cause damage to them, and at the same time, it also avoids the damage of the glass disk in the turntable assembly 600.

[0038] As a preferred example of the present application, the inner ring 1 of the roller is used to support and shape the outer ring 2 of the roller. The outer ring 2 of the roller is sleeved outside the inner ring 1 of the roller for elastic wrapping, and the material hardness of the inner ring 1 of the roller is greater than that of the outer ring 2 of the roller. As a preferred example of the present application, the inner ring of the roller (metal material or special plastic material that does not absorb microwaves): the value range of HRC (Rockwell hardness) is 40 - 60 or the value range of HB (Brinell hardness) is 100 - 200, and the outer ring of the roller (silicone or resin material): Shore hardness 30 - 70 degrees (silicone) or 30 - 60 (soft resin). This setting optimizes the hardness difference between the materials of the inner ring 1 and the outer ring 2 of the roller. The inner ring with high hardness enhances the wear resistance and anti-deformation ability of the roller, maintaining long-term stability; the soft outer ring provides good shock absorption effect, reducing noise and vibration, and at the same time protecting the roller from damage in a complex environment, enabling the roller assembly 100 to better adapt to different environments during operation and improving its service life.

[0039] As a preferred example of the present application, the inner ring 1 of the roller includes a first support shaft 101 and a first limiting plate 102, and the first limiting plate 102 is arranged outside the first support shaft 101; the outer ring 2 of the roller includes a wrapping ring 201, and a first mounting hole 202 is arranged on the inner side of the wrapping ring 201 close to the central axis. The first support shaft 101 is inserted into the first mounting hole 202 and is limited by the first limiting plate 102.

[0040] This setting further optimizes the connection structure between the inner ring 1 and the outer ring 2 of the roller, making the connection between the inner ring 1 and the outer ring 2 of the roller more stable, effectively preventing the shaking and offset of the roller assembly 100 during rotation, and extending the service life of the roller assembly 100.

[0041] As a preferred example of the present application, the inner ring 1 of the roller further includes a second limiting plate 105. The first limiting plate 102 and the second limiting plate 105 are respectively arranged at opposite ends of the first support shaft 101 along the central axis direction. A first limiting groove 106 is formed outside the first limiting plate 102, the second limiting plate 105 and the first support shaft 101, and the first mounting hole 202 of the outer ring 2 of the roller is sleeved on the first support shaft 101.

[0042] This setting further optimizes the structural design of the roller assembly 100, making the connection between the inner ring 1 and the outer ring 2 of the roller more stable. At the same time, the first mounting hole 202 is sleeved on the first support shaft 101, further ensuring the flexible rotation and stability of the roller assembly 100, and improving the convenience of installation and maintenance of the roller assembly 100.

[0043] As a preferred example of the present application, a second limiting groove 203 is provided at each of the opposite ends of the wrapping ring 201 perpendicular to the central axis, and the two second limiting grooves 203 are used to accommodate and limit the first limiting plate 102 and the second limiting plate 105. As a specific example of the present application, the second limiting groove 203 extends along the radial direction of the first mounting hole 202 to the first mounting hole 202. In the example of the present application, by providing a second limiting groove 203 on each of the opposite sides of the wrapping ring 201, the cross-section of the outer ring 2 of the roller is designed to be approximately "T"-shaped, and the first limiting plate 102 and the second limiting plate 105 on the opposite sides of the first support shaft 101 on the inner ring 1 of the roller are clamped and limited in the two second limiting grooves 203. Preferably, the first limiting plate 102 is designed to be inclined away from the second limiting plate 105 from the connecting end close to the first support shaft 101 to the free end on the other side, and the second limiting plate 105 is designed to be inclined away from the first limiting plate 102 from the connecting end close to the first support shaft 101 to the free end on the other side. Preferably, the angles of the first limiting plate 102 and the second limiting plate 105 relative to the central axis of the first support shaft 101 in the vertical direction are equal.

[0044] Through the addition of the second limiting groove 203 and the use of the inclined first limiting plate and second limiting plate, the connection between the inner ring 1 and the outer ring 2 of the roller is made closer, further reducing shaking and offset. The inclined assembly structure optimizes the cooperation between the limiting plate and the limiting groove of the roller assembly 100, enhances the overall stability of the roller assembly 100, ensures that the roller assembly 100 rotates more smoothly, and extends the service life.

[0045] As a preferred example of the present application, a first connection hole 103 is provided at a position of the first support shaft 101 close to the central axis. Preferably, a first arc transition portion 104 is formed at the connection between the first support shaft 101 and the first limiting plate 102. Similarly, a first arc transition portion 104 is formed at the connection between the first support shaft 101 and the second limiting plate 105, and the first connection hole 103 communicates with the two first arc transition portions 104.

[0046] This setting realizes the convenient connection between the roller assembly 100 and the roller bracket 200 through the first connection hole 103. It not only makes the installation and disassembly of the roller assembly 100 more convenient and fast, but also improves the adaptability and maintainability of the roller assembly 100. In addition, by optimizing the structural design of the connection, stress concentration is reduced, and the service life of the roller assembly 100 is further extended.

[0047] As a preferred example of the present application, the distance between the outer diameter of the inner roller ring 1 and the outer diameter of the outer roller ring 2 is D, where D ≥ 0.5 mm. In the example of the present application, the outer diameter of the inner roller ring 1 is the projection distance between the outer contour line of the first limiting plate 102 or the second limiting plate 105 on the inner roller ring 1 away from one end of the first support shaft 101 and the central axis of the first connection hole 103. The outer diameter of the outer roller ring 2 is the projection distance between the outer surface contour line of the wrapping ring 201 and the central axis of the first connection hole 103. The outer surface of the wrapping ring 201 abuts against the upper surface of the first installation groove 5 in the microwave oven cavity 500, which is the Figure 5 structure shown in

[0048] This design ensures that while the roller assembly 100 has a compact structure, it also takes into account the minor deformations and frictions during actual installation and use, avoiding the occurrence of arcing when the inner roller ring 1 is made of metal material, enabling it to maintain a stable operating state during long-term use.

[0049] The roller assembly 100 disclosed in the present application ensures the stability and durability of the roller assembly 100 in a microwave environment through ingenious structural design and material selection. The outer roller ring 2 composed of soft and elastic silicone or resin material is combined with the inner roller ring 1 with a relatively large hardness, optimizing the support structure of the roller assembly 100, protecting the contact surface from damage, providing a good shock absorption effect, making the roller assembly 100 rotate more smoothly and flexibly, having a compact structure, stable connection, reliable use, and meeting the environmental design requirements of the roller assembly 100.

[0050] Embodiment 2

[0051] As shown in Figures 1 - 5 the present application discloses a roller bracket 200, which includes the roller assembly 100 as described in Embodiment 1 and a support frame 3. At least two clamping members 4 are provided on the support frame 3, and the clamping members 4 pass through the first connection hole 103 in the roller assembly 100 and are detachably fixed. As an example of the present application, the support frame 3 has a structural design such as a Y shape or an O shape. Three clamping members 4 are provided on the support frame 3, and the clamping members 4 are integrally or detachably arranged on the outer contour surface of the support frame 3 and extend in a direction away from the center of the support frame 3. Preferably, the three clamping members 4 are evenly distributed on the support frame 3.

[0052] This design forms a stable support platform through the cooperation of the roller assembly 100 and the support frame 3. It is easy to install and rotate reliably. It not only meets the usage requirements in different scenarios but also facilitates later maintenance and replacement. In addition, the special structural design of the support frame, such as Y-shaped, O-shaped, etc., not only optimizes the space layout but also enhances the overall structural strength and stability, enabling the roller support 200 to better adapt to various working environments, extending the service life, and improving the working performance of the roller assembly 100.

[0053] As a preferred example of this application, the support frame 3 includes a support frame body 301. At the positions where the clamping member 4 is arranged on the support frame body 301, a first limiting boss 302 and a second limiting boss 303 are provided. The first limiting boss 302 and the second limiting boss 303 are arranged at the upper and lower ends of the support frame body 301 on the side close to the clamping member 4. On the side of the first limiting boss 302 and the second limiting boss 303 close to the clamping member 4, a third limiting groove 304 is provided. The first limiting plate 102 and the second limiting plate 105 of the inner ring 1 of the roller in the roller assembly 100 are respectively limited by the third limiting groove 304 and the clamping member 4. As a specific example of this application, the cross-section of the support frame body 301 is arranged in an oblong shape. A first mounting boss 305 is provided on the outer side surface of the support frame body 301 far from its center. The support frame body 301, the first mounting boss 305, the first limiting boss 302, and the second limiting boss 303 form a cross-shaped structure. The support frame body 301, the first mounting boss 305, the first limiting boss 302, and the second limiting boss 303 are integrally formed. The clamping member 4 is designed to be detachable or integrally formed on the first mounting boss 305.

[0054] This design further optimizes the specific structure of the support frame 3, enabling the roller assembly 100 to be quickly positioned and installed during installation, effectively preventing it from shifting or shaking during use. At the same time, the design of the cross-shaped structure not only improves the overall strength of the support frame 3 but also makes the roller support 200 more compact and beautiful.

[0055] Embodiment 3

[0056] As Figures 1 - 7 shown, this application also discloses a microwave oven, which includes a cavity 500. In the cavity 500, a roller support 200 and a turntable assembly 600 as described in Embodiment 2 are provided. The roller support 200 is arranged in the cavity 500 and supports the turntable assembly 600.

[0057] As a specific example of the present application, a first mounting groove 5 is provided in the cavity 500, and a connector 6 driven by a motor is provided at the center of the first mounting groove 5. The connector 6 is limitedly connected to the turntable assembly 600 and can drive it to rotate as a whole. When the turntable assembly 600 rotates, it can drive the roller bracket 200 to rotate in the first mounting groove 5 as a whole.

[0058] In the example of the present application, the structure of the turntable assembly 600 and the connector 6 and the driving method thereof adopt the existing technology, which is not the focus of improvement of the present application. At the same time, other structures such as the door assembly 300 and the control assembly 400 in the microwave oven all adopt similar structures in the existing technology and will not be described in detail here.

[0059] The present application improves the structure of the roller assembly 100 and the roller bracket 200. The roller assembly 100 uses different materials to form the roller inner ring 1 and the roller outer ring 2, thereby enhancing the wear resistance and deformation resistance, reducing noise and vibration, protecting the roller assembly 100 and the contact surface from damage, and extending the service life; the design of the roller bracket 200 combines stability and flexibility, and realizes the rapid installation and precise positioning of the roller assembly 100 through structures such as the clamping parts and the limiting boss, effectively preventing the roller from deflecting or shaking during use, and improving the stability and load-bearing capacity of the overall structure. The improved design of the present application not only improves the practicality and durability of the roller assembly 100 and the roller bracket 200, but also makes important contributions to the performance improvement and user experience optimization of household appliances such as microwave ovens.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roller assembly, characterized in that: The invention comprises a roller inner ring (1) and a roller outer ring (2), wherein the roller inner ring (1) is integrally formed of a metal material or a plastic material that does not absorb microwaves, and the roller outer ring (2) is integrally formed of a silicone or resin material that has elastic deformation and can be used in a microwave environment, and the roller outer ring (2) is arranged in a wrapped shape on the outside of the roller inner ring (1), and the roller outer ring (2) and the roller inner ring (1) are detachably connected or integrally formed by injection molding.

2. The roller assembly according to claim 1, characterized in that: The roller inner ring (1) comprises a first support shaft (101) and a first limiting plate (102), wherein the first limiting plate (102) is arranged on the outside of the first support shaft (101); the roller outer ring (2) comprises a wrapping ring (201), wherein a first mounting hole (202) is arranged on the inner side of the wrapping ring (201) close to the central axis, and the first support shaft (101) is inserted into the first mounting hole (202) and is limited by the first limiting plate (102).

3. The roller assembly according to claim 2, characterized in that: The roller inner ring (1) also includes a second limit plate (105), the first limit plate (102) and the second limit plate (105) are respectively arranged at opposite ends of the first support shaft (101) along the central axis direction, a first limit groove (106) is formed on the outside of the first limit plate (102), the second limit plate (105) and the first support shaft (101), and the first mounting hole (202) of the roller outer ring (2) is sleeved on the first support shaft (101).

4. The roller assembly according to claim 3, characterized in that: A second limiting groove (203) is respectively provided at two opposite ends of the wrapping ring (201) perpendicular to the central axis, and the two second limiting grooves (203) are used to accommodate the first limiting plate (102) and the second limiting plate (105).

5. The roller assembly according to any one of claims 2 to 4, characterized in that: A first connection hole (103) is provided at a position of the first support shaft (101) close to the central axis.

6. The roller assembly according to claim 5, characterized in that: The distance between the outer diameter of the roller inner ring (1) and the outer diameter of the roller outer ring (2) is D, and D is ≥ 0.5 mm.

7. A roller bracket, characterized in that: It comprises a roller assembly (100) and a support frame (3) as claimed in any one of claims 1 to 6, wherein at least two clamping members (4) are arranged on the support frame (3), and the clamping members (4) pass through a first connecting hole (103) in the roller assembly (100) and can be detachably fixed.

8. The roller bracket according to claim 7, characterized in that: The support frame (3) comprises a support frame body (301), a first limiting boss (302) and a second limiting boss (303) are arranged at the position where the clamping member (4) is arranged on the support frame body (301), the first limiting boss (302) and the second limiting boss (303) are arranged at the upper and lower ends of the support frame body (301) close to the clamping member (4), a third limiting groove (304) is arranged on the first limiting boss (302) and the second limiting boss (303) close to the clamping member (4), and the first limiting plate (102) and the second limiting plate (105) of the roller inner ring (1) in the roller assembly (100) are limited by the third limiting groove (304) and the clamping member (4) respectively.

9. The roller bracket according to claim 8, characterized in that: The cross-section of the support frame body (301) is set in an oblong shape, and a first mounting boss (305) is set on the outer side of the support frame body (301) away from the center thereof. The support frame body (301), the first mounting boss (305) and the first limiting boss (302) and the second limiting boss (303) form a cross structure. The support frame body (301), the first mounting boss (305), the first limiting boss (302) and the second limiting boss (303) are integrally formed, and the clamping part (4) is detachable or integrally formed on the first mounting boss (305).

10. A microwave oven, characterized in that: It comprises a cavity (500), in which a roller bracket (200) and a turntable assembly (600) as claimed in any one of claims 7 to 9 are arranged, and the roller bracket (200) is arranged in the cavity (500) and supports the turntable assembly (600).

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