Microwave oven transformer convenient to install
The design of the snap-fit structure and fastening mechanism solves the problem of inconvenient installation of microwave oven transformers, enabling quick disassembly and maintenance, and simplifying the transformer replacement process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN DONLIM WEILI ELECTRICAL APPLIANCES CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-15
AI Technical Summary
The installation and removal of transformers in existing microwave ovens are inconvenient, and it is difficult to disassemble and repair them in a simple way.
The transformer is securely installed and quickly disassembled by using a snap-fit structure and fastening mechanism, through the cooperation of the snap-fit slot and the mounting plate, avoiding the need for fixing methods such as screws.
It enables quick disassembly and repair of the transformer, simplifies the replacement process, requires no additional tools, and maintains the structural integrity and heat dissipation effect of the microwave oven.
Smart Images

Figure CN224248400U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of transformer installation, specifically to a microwave oven transformer that is easy to install. Background Technology
[0002] A microwave oven is a modern cooking appliance that uses microwave energy to heat food. It mainly consists of a power supply, magnetron, electronic control box, electronic transformer, and fan assembly. The transformer is the main high-power component in a microwave oven. When a microwave oven undergoes quality inspection or malfunctions, the transformer and magnetron are usually the primary targets for inspection. The magnetron and electronic control box have numerous chips and wiring, making disassembly and reassembly inherently difficult. However, the electronic transformer is a roughly rectangular monolithic component, and its installation needs to be designed for easy disassembly and reassembly. The wiring typically only requires one pair of wires connecting the primary coil and one pair connecting the secondary coil, making disassembly and repair easier. In current microwave ovens, the electronic transformer is usually fixed inside the casing by welding or screws, making it difficult to remove directly without additional tools, and replacement is also inconvenient. Utility Model Content
[0003] To address the problems existing in the prior art, the present invention aims to provide a microwave oven transformer that is easy to install. This invention, through the cooperation of a snap-fit structure, a fastening mechanism, and a slot, makes it easier to install and fix the transformer inside the microwave oven. Furthermore, it is easy to remove and replace or repair, eliminating the need for screws or other tightening methods.
[0004] The present invention discloses an easy-to-install microwave oven transformer, comprising a mounting plate for fixing the transformer and a slot on the bottom plate of the microwave oven. The slot is located between the inner cavity and the outer shell of the microwave oven and is arranged along the width direction of the microwave oven. The two opposite edges of the mounting plate are bent downward for insertion into the slot. One end of the slot is detachably connected to the edge of the mounting plate by a fastening mechanism. The other end of the slot is provided with a fastening structure at a fixed position inside the microwave oven. The fastening structure is adapted to the outer shell of the transformer and, in conjunction with the fastening mechanism, fixes the position of the transformer relative to the bottom plate of the microwave oven.
[0005] In one embodiment, the fastening mechanism includes a movable fastener rotatably connected to the end of the slot. The upper end of the movable fastener is hook-shaped. A groove is provided on the mounting plate corresponding to the position of the movable fastener. The mounting plate is inserted into the slot and abuts against the lower end of the movable fastener, thereby causing the movable fastener to rotate and its upper end to engage with the groove.
[0006] In one embodiment, the snap-fit structure includes a mounting plate that is fixedly or detachably connected to the microwave oven. The mounting plate has a mounting hole located on the upper surface of the transformer. The upper surface of the transformer has a hook-shaped protrusion that engages with the mounting hole from below the mounting plate.
[0007] In one embodiment, the fastening mechanism is located at one end of the slot near the outer shell of the microwave oven, and the fastening structure is located on the outer side of the inner liner of the microwave oven.
[0008] In one embodiment, the cross-sectional width of the downwardly curved edge of the mounting plate gradually decreases from top to bottom, and the shape within the slot is adapted to this edge.
[0009] In one embodiment, the height of the slot is greater than the height of the bottom edge of the microwave oven, and there is space between the transformer and the various components of the microwave oven.
[0010] In one embodiment, the connecting wire of the transformer extends outward and has a first engaging member at its end, and the end of the wire connected to the transformer inside the microwave oven is fitted with a second engaging member, the first engaging member being adapted to the second engaging member.
[0011] In one embodiment, the bottom plate of the microwave oven is recessed upwards corresponding to the position of the transformer and forms multiple heat dissipation holes.
[0012] Compared with the prior art, the beneficial effects of this utility model's technical solution are:
[0013] This utility model firstly uses the cooperation of the slot and the fastening mechanism to allow the two sides of the mounting plate to be inserted into the slot. The corresponding fastening structure further cooperates to abut against the transformer shell, so that the entire transformer is snapped into a fixed position. This fixing method is sufficient to stabilize the position of the transformer and can lift it up, making it more convenient to replace and repair the transformer. It does not require the use of screws or other tightening methods to fix it, and the disassembly and assembly process does not require additional auxiliary tools, thus achieving the purpose of quick disassembly and assembly. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of a microwave oven transformer that is easy to install according to this utility model;
[0015] Figure 2 This is a side view of a microwave oven transformer that is easy to install according to this utility model;
[0016] Figure 3 This is a top view of a microwave oven transformer that is easy to install according to this utility model.
[0017] Explanation of reference numerals in the attached drawings: 1-Microwave oven, 2-Transformer, 3-Mounting plate, 4-Slot, 5-Snap-fit mechanism, 51-Modible fastener, 52-Groove, 6-Snap-fit structure, 61-Mounting piece, 7-First snap-fit component, 8-Second snap-fit component. Detailed Implementation
[0018] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0019] In the description of this utility model, it should be noted that, 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; they can be described as the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0020] like Figures 1-3 As shown, this utility model discloses an easy-to-install microwave oven transformer, including a mounting plate 3 for fixing the transformer 2 and a slot 4 provided on the bottom plate of the microwave oven 1. The slot 4 is located between the inner cavity and the outer shell of the microwave oven 1 and is arranged along the width direction of the microwave oven 1. The two opposite edges of the mounting plate 3 are bent downward and used to insert into the slot 4. One end of the slot 4 is detachably connected to the edge of the mounting plate 3 through a fastening mechanism 5. The other end of the slot 4 is provided with a fastening structure 6 at a fixed position inside the microwave oven 1. The fastening structure 6 is adapted to the outer shell of the transformer 2 and, together with the fastening mechanism 5, fixes the position of the transformer 2 relative to the bottom plate of the microwave oven 1. This utility model firstly utilizes the cooperation of the slot 4 and the fastening mechanism 5 to ensure that when the two sides of the mounting plate 3 are inserted into the slot 4, one end is fastened, while the other end is further engaged by the fastening structure 6 to press against the outer shell of the transformer 2, thus locking the entire transformer 2 into a fixed position. This fixing method is sufficient to stabilize the position of the transformer 2 and can elevate it, allowing the space between the two slots 4 to facilitate heat dissipation of the transformer 2. It also makes it easier to replace and repair the transformer 2 without the need for tightening with screws or other means. The disassembly and assembly process does not require additional auxiliary tools, achieving the purpose of quick disassembly and assembly.
[0021] The fastening mechanism 5 includes a movable fastener 51 rotatably connected to the end of the slot 4. The upper end of the movable fastener 51 is hook-shaped. A groove 52 is provided on the mounting plate 3 corresponding to the position of the movable fastener 51. The mounting plate 3 is inserted into the slot 4 and abuts against the lower end of the movable fastener 51, thereby causing the movable fastener 51 to rotate and its upper end to engage with the groove 52. The rotation axis of the movable fastener 51 is located at the bottom of one end of the slot 4. When the edge of the mounting plate 3 is inserted into the slot 4, its corresponding position abuts against the lower end of the movable fastener 51, thereby causing the movable fastener 51 to rotate upward. The upper end of the movable fastener 51 will then engage with the groove 52 on the mounting plate 3, thus fastening the mounting plate 3 to the slot 4. During disassembly, the operator only needs to pry the top of the movable fastener 51 to disengage it from the groove 52. The lower end of the movable fastener 51 can then be used to lift the edge of the mounting plate 3, thereby disengaging it from the fastening structure 6.
[0022] The snap-fit structure 6 includes a mounting piece 61 that is fixedly or detachably connected to the microwave oven 1. The mounting piece 61 has mounting holes located on the upper surface of the transformer 2. The upper surface of the transformer 2 has hook-shaped protrusions that engage with the mounting holes from below the mounting piece 61. The mounting piece 61 can be formed by a fixed structure on the microwave oven 1 or fixed to the microwave oven 1 by screws or similar detachable methods. The mounting piece 61 forms mounting holes at corresponding positions. When the mounting plate 3 mates with the slot 4, the protrusion on the top side of the transformer 2 snaps into the mounting holes from bottom to top, thus engaging with the snap-fit mechanism 5 at the opposite end of the slot 4 to secure the transformer 2. To facilitate the design of the internal structure of the microwave oven 1, the snap-fit mechanism 5 is located at the end of the slot 4 near the outer shell of the microwave oven 1, and the snap-fit structure 6 is located on the outer side of the inner cavity of the microwave oven 1. This avoids altering the shape of the outer shell of the microwave oven 1, and prevents the transformer 2 from contacting the outer shell, allowing the outer shell of the microwave oven 1 to retain its function of shielding against electric field radiation.
[0023] Furthermore, the cross-sectional width of the downward-curving edge of the mounting plate 3 gradually decreases from top to bottom, and the shape inside the slot 4 matches this edge. The part of the mounting plate 3 that mates with the slot 4 has a cross-section that forms a triangle, facilitating the insertion of the mounting plate 3. The corresponding position of the movable fastener 51 has a notch and a flat bottom, facilitating the engagement of the aforementioned fastening mechanism 5. In addition, due to the installation of the microwave oven 1's outer shell, the edge of the base plate is generally raised to a certain height to form a matching fastening part. Therefore, the height of the slot 4 is greater than the height of the edge of the microwave oven 1's base plate, so that the rotation of the movable fastener 51 is not obstructed, and after the transformer 2 is installed, there will be sufficient space between the transformer 2 and the various components of the microwave oven 1, especially the outer shell.
[0024] In one embodiment, the connecting wire of transformer 2 extends outward and has a first engaging member 7 at its end. Inside microwave oven 1, the end of the wire connected to transformer 2 is fitted with a second engaging member 8. The first engaging member 7 and the second engaging member 8 are compatible. Transformer 2 mainly connects the primary coil and the secondary coil, and the connection of the wire ends is ensured by the mutual engagement of the first engaging member 7 and the second engaging member 8, facilitating easy assembly and disassembly. This structure can refer to existing wire connection methods and can use interfaces such as network cables or power cords as needed. The bottom plate of microwave oven 1 is recessed upwards corresponding to the position of transformer 2 and forms multiple heat dissipation holes, thereby protruding the installation position of transformer 2 and providing heat dissipation.
[0025] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application.
[0026] The positional relationships described in the figures are for illustrative purposes only and should not be construed as limiting this patent. Clearly, the above embodiments of this utility model are merely examples to clearly illustrate the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.
Claims
1. A microwave oven transformer that is easy to install, characterized in that, The device includes a mounting plate (3) for fixing the transformer (2) and a slot (4) on the bottom plate of the microwave oven (1). The slot (4) is located between the inner liner and the outer shell of the microwave oven (1) and is arranged along the width direction of the microwave oven (1). The two opposite edges of the mounting plate (3) are bent downward and used to be inserted into the slot (4). One end of the slot (4) is detachably connected to the edge of the mounting plate (3) through a fastening mechanism (5). The other end of the slot (4) is provided with a fastening structure (6) at a fixed position inside the microwave oven (1). The fastening structure (6) is adapted to the outer shell of the transformer (2). The fastening structure (6) cooperates with the fastening mechanism (5) to fix the position of the transformer (2) relative to the bottom plate of the microwave oven (1).
2. The microwave oven transformer for easy installation according to claim 1, characterized in that, The fastening mechanism (5) includes a movable fastener (51) rotatably connected to the end of the slot (4). The upper end of the movable fastener (51) is hook-shaped. The mounting plate (3) is provided with a groove (52) corresponding to the position of the movable fastener (51). The mounting plate (3) is inserted into the slot (4) and abuts against the lower end of the movable fastener (51), thereby causing the movable fastener (51) to rotate and its upper end to engage with the groove (52).
3. The microwave oven transformer for easy installation according to claim 2, characterized in that, The snap-fit structure (6) includes a mounting plate (61) fixed or detachably connected to the microwave oven (1). The mounting plate (61) has a mounting hole located on the upper surface of the transformer (2). The upper surface of the transformer (2) has a hook-shaped protrusion that engages with the mounting hole from below the mounting plate (61).
4. The microwave oven transformer for easy installation according to claim 3, characterized in that, The fastening mechanism (5) is located at one end of the slot (4) near the outer shell of the microwave oven (1), and the fastening structure (6) is located on the outer side of the inner liner of the microwave oven (1).
5. The microwave oven transformer for easy installation according to claim 4, characterized in that, The cross-sectional width of the downward-curved edge of the mounting plate (3) gradually decreases from top to bottom, and the shape inside the slot (4) is adapted to this edge.
6. The microwave oven transformer for easy installation according to claim 5, characterized in that, The height of the slot (4) is greater than the height of the bottom edge of the microwave oven (1), and there is space between the transformer (2) and the various components of the microwave oven (1).
7. A microwave oven transformer that is easy to install according to any one of claims 1-6, characterized in that, The connecting wire of the transformer (2) extends outward and is provided with a first locking member (7) at the end. The end of the wire connected to the transformer (2) in the microwave oven (1) is fitted with a second locking member (8). The first locking member (7) and the second locking member (8) are compatible.
8. The microwave oven transformer for easy installation according to claim 7, characterized in that, The bottom plate of the microwave oven (1) is recessed upwards at the position corresponding to the transformer (2) and forms multiple heat dissipation holes.