一种微波炉转盘电机防水安装固定结构
By incorporating seals and interference fit structures at key locations in the microwave oven turntable motor, the problem of liquid seepage into the motor is solved, resulting in more efficient waterproofing and a longer motor lifespan, while reducing maintenance costs and safety risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN DONLIM WEILI ELECTRICAL APPLIANCES CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing microwave oven turntable motors are prone to water seepage when liquids spill or during cleaning, which can damage the motor, and waterproof motors are expensive.
A waterproof mounting and fixing structure for a microwave oven turntable motor was designed. Multiple seals are formed at key gap positions by setting a first seal and a second seal, including a first seal between the turntable shaft and the microwave oven cavity and a second seal between the motor shaft and the motor bracket. Combined with an interference fit and a drainage structure, liquid is prevented from seeping into the motor.
It significantly improves the microwave oven's waterproof performance, extends the motor's lifespan, reduces maintenance costs and safety hazards, and ensures safety and reliability during cooking and cleaning.
Smart Images
Figure CN224520826U_ABST
Abstract
Claims
1. A waterproof mounting and fixing structure for a microwave oven turntable motor, characterized in that: Includes a first seal (3) disposed between the turntable shaft (2) and the microwave oven cavity (4) and / or a second seal (6) disposed between the motor bracket (5) and the motor (7); The turntable shaft (2) includes a main shaft part (204) rotatably disposed on the inner bottom wall of the microwave oven cavity (4) and connected to the turntable (1), and a first sealing member (3) sleeved on the outside of the main shaft part (204) to seal the first installation gap between the turntable shaft (2) and the inner bottom wall of the microwave oven cavity (4); The motor (7) is mounted on the motor bracket (5). The motor (7) includes a motor shaft (702) that extends out of the motor bracket (5) and is connected to the turntable shaft (2). A second seal (6) is fitted on the outside of the motor shaft (702) to seal the second installation gap between the motor shaft (702) and the motor bracket (5).
2. The microwave oven turntable motor waterproof mounting and fixing structure according to claim 1, characterized in that: An interference fit is provided between the main shaft part (204) of the turntable shaft (2) and the motor shaft (702) of the motor (7) to prevent the turntable shaft (2) from falling off; the turntable shaft (2) is fixedly connected to the motor shaft (702) of the motor (7) along the interference fit, so that the turntable shaft (2) is relatively fixed on the inner bottom wall of the microwave oven cavity (4) and squeezes the first seal (3).
3. The microwave oven turntable motor waterproof mounting and fixing structure according to claim 2, characterized in that: The interference fit includes a non-circular inner cavity provided in the main shaft part (204) and an anti-slip rib (202) provided in the non-circular inner cavity. The motor shaft (702) of the motor (7) has a non-circular cross section and is adapted to the non-circular inner cavity. The motor shaft (702) of the motor (7) is inserted into the non-circular inner cavity of the main shaft part (204) and abuts against the anti-slip rib (202).
4. The microwave oven turntable motor waterproof mounting and fixing structure according to claim 1, characterized in that: The microwave oven cavity (4) has a cavity boss (401) on its inner bottom wall. The cavity boss (401) has an installation shaft hole (402). The main shaft part (204) of the turntable shaft (2) is inserted into the installation shaft hole (402) and fixedly connected to the motor shaft (702). The turntable shaft (2) presses the first sealing element (3) against the cavity boss (401).
5. The waterproof mounting and fixing structure for the microwave oven turntable motor according to claim 1, characterized in that: The motor bracket (5) is provided with a motor shaft hole (505), the motor shaft hole (505) is provided with an inner flange (505A), the main shaft part (204) of the turntable shaft (2) is provided with a recessed platform (203), the motor shaft (702) passes through the motor shaft hole (505) of the motor bracket (5) and is limited to the recessed platform (203), and the recessed platform (203) is provided with a recessed platform wall (203A) for covering the inner flange (505A).
6. The microwave oven turntable motor waterproof mounting and fixing structure according to claim 5, characterized in that: The motor shaft (702) is provided with a D-type limiter (703) that cooperates with the limiter of the platform (203), and there is an anti-wear gap between the inner flange (505A) of the platform (203) and the platform wall (203A).
7. The microwave oven turntable motor waterproof mounting and fixing structure according to claim 5, characterized in that: The motor bracket (5) has a groove (505B) for limiting the installation of the second seal (6) in the motor shaft hole (505). The motor (7) has a motor boss (704) in the groove (505B). The motor shaft (702) extends upward and is mounted on the motor boss (704). The motor shaft (702) of the motor (7) is inserted into the motor shaft hole (505) and passes through the second seal (6). The motor boss (704) cooperates with the groove (505B) and the motor boss (704) presses the second seal (6) against the groove (505B).
8. The microwave oven turntable motor waterproof mounting and fixing structure according to claim 1, characterized in that: The motor bracket (5) is provided with a water collection tank (501) for receiving liquid and a drainage structure for draining liquid from the water collection tank (501); The drainage structure includes a drainage trough (503) set on the bottom wall of the water collection trough (501). The drainage trough (503) has a drainage slope connected to the bottom wall of the water collection trough (501) at one end, and a drainage cut is provided between the other end of the drainage slope and the water collection trough (501). The drainage structure includes a first drainage hole (502) and / or a second drainage hole (504) that penetrate the bottom wall of the water accumulation tank (501) from top to bottom.
9. The waterproof mounting and fixing structure for the microwave oven turntable motor according to claim 8, characterized in that: The microwave oven cavity (4) is provided with a bottom plate (8) below it. The bottom plate (8) is provided with a bottom plate groove (802) for receiving liquid below the motor bracket (5). The drain groove (503), the first drain hole (502) and the second drain hole (504) are respectively connected to the bottom plate groove (802). The bottom plate groove (802) is provided with a first bottom plate drain hole (801) and / or a second bottom plate drain hole (803).
10. The microwave oven turntable motor waterproof mounting and fixing structure according to claim 1, characterized in that: The turntable (1) has a boss groove (102) at the bottom and a triangular groove (201) that cooperates with the boss groove (102) on the turntable shaft (2). The triangular groove (201) of the turntable shaft (2) is connected to the boss groove (102) of the turntable (1). The turntable shaft (2) has a connecting surface (205) for pressing the first seal (3). The triangular groove (201) extends radially along the outside of the connecting surface (205). The main shaft part (204) is set on the connecting surface (205) of the turntable shaft (2). The motor bracket (5) is provided with a fixing buckle (506) and a fixing hole (507). The motor (7) is provided with a first fixing ear (705) that cooperates with the fixing buckle (506) and a second fixing ear (701) that cooperates with the fixing hole (507).