Door body pushing control mechanism of household appliance

Abstract

The utility model relates to the technical field of household appliances, and provides a door body pushing control mechanism of a household appliance, the household appliance comprises a door body, and the household appliance is provided with a door body pushing mechanism used for pushing the door body to be opened and a control device used for generating a door body opening signal and triggering the door body pushing mechanism to stretch out to open the door body. Through cooperation of the door body pushing mechanism and the control device, various opening modes for opening the door body without manual operation are provided. A user generates a door body opening signal through the control device, and the door body pushing mechanism automatically pushes the door body to be opened. Compared with a traditional mechanical door handle, a user does not need to directly pull the door handle to open the door body. The control device can integrate interaction modes such as knocking, touching or voice control. The design can avoid arranging a door handle on the door body of the household appliance.

Description

Technical Field

[0001] This utility model relates to the technical field of household appliances, specifically to a door push control mechanism for a household appliance. Background Technology

[0002] Traditional household appliances (such as dishwashers, ovens, and refrigerators) typically use mechanical door handles to open and close the door. Users need to manually pull the handle to overcome the sealing resistance between the door and the appliance (such as friction from the sealing strip or internal negative pressure) to open the door.

[0003] However, this method of relying on physical contact and manual operation has the following limitations: manually pulling the door handle requires applying a certain amount of force, which can easily cause difficulties for elderly users or those with mobility impairments. As a high-frequency contact component and generally exposed on the outside of household appliances, the door handle is easily contaminated with oil and bacteria, which may become a source of cross-contamination, especially in the kitchen environment, posing a hygiene hazard. Utility Model Content

[0004] This invention proposes a door opening control mechanism for household appliances. Through the cooperation of the door opening mechanism and a control device, it provides multiple ways to open the door without manual pulling. The user generates a door opening signal via the control device, and the door opening mechanism automatically pushes the door open. Compared to traditional mechanical door handles, this design eliminates the need for the user to directly pull the handle to open the door. The control device can integrate interaction methods such as tapping, touch, or voice control. This design avoids the need for door handles on the doors of household appliances.

[0005] A door push control mechanism for a household appliance designed for this purpose, the household appliance including a door, the household appliance being provided with a door push mechanism for pushing the door to open, and a control device for generating a door opening signal to trigger the door push mechanism to extend and open the door.

[0006] The household appliance is equipped with a control device for receiving corresponding electrical signals to control the door pushing mechanism to extend or retract. The door pushing mechanism and the control device are respectively electrically connected to the control device.

[0007] The door pushing mechanism includes a push rod and a driver electrically connected to the control device. The driver is provided with a drive shaft that is directly or indirectly connected to the push rod.

[0008] The drive shaft rotation or axial extension is mounted on the driver.

[0009] The push rod and the driver with a drive shaft are arranged along the length of the door pushing mechanism, and the drive shafts of the push rod and the driver are coaxial with each other.

[0010] The driver is equipped with a rotating drive shaft, and a screw and nut transmission assembly is provided between the drive shaft and the push rod. The drive shaft and the push rod are indirectly connected through the screw and nut transmission assembly.

[0011] The screw and nut transmission assembly includes a screw connected to the drive shaft, a transmission component connected to the push rod, and a nut disposed at one end of the transmission component. The nut is threadedly connected to the screw, and the nut and the transmission component are integrally formed and constitute an inseparable whole; or, the nut and the transmission component are separately connected.

[0012] The household appliance is equipped with a door status detector;

[0013] The door status detector is used to detect whether the door opening position has reached a preset threshold and is electrically connected to the control device.

[0014] When the door is opened by the door pushing mechanism and then opened to a preset threshold under the action of external force, the control device is triggered to control the door pushing mechanism to perform a reset action, and the door pushing mechanism retracts into the household appliance.

[0015] The household appliance is equipped with a timer;

[0016] The timer is used to detect when the door is opened by the door pushing mechanism for a preset duration and is electrically connected to the control device.

[0017] If no operation command is detected within a predetermined time after the door is opened by the door pushing mechanism, the control device is triggered to control the door pushing mechanism to perform a reset action, and the door pushing mechanism retracts into the household appliance.

[0018] The control device includes any two or one of the following: a tapping module, a touch module, a voice control module, and a communication module;

[0019] The control device includes a display controller, and an operating device is mounted on the display controller and electrically connected to the display controller.

[0020] The control device includes a display controller and a main controller, the display controller and the main controller are electrically connected, and the main controller is electrically connected to the door pushing mechanism;

[0021] The household appliances mentioned are dishwashers, ovens, microwave ovens, sterilizers, or refrigerators.

[0022] The beneficial technical effects of this utility model are as follows:

[0023] By incorporating a door-pushing mechanism and control device into the home appliance, automated door opening is achieved. The control device generates a door-opening signal and triggers the door-pushing mechanism to extend, thus opening the door. This design completely replaces the manual operation of traditional mechanical door handles, avoiding direct contact between the user and the door handle, making it especially suitable for elderly users or those with mobility issues. The automated pushing function of the door-pushing mechanism overcomes the sealing resistance between the door and the main body of the home appliance (such as friction from the sealing strip or internal negative pressure) or the locking force of the door hook lock, significantly reducing the force required to open the door. Furthermore, since a door handle can be eliminated, the door surface is smoother, enhancing the overall aesthetics of the home appliance. After completing the pushing action, the door-pushing mechanism automatically retracts, preventing users from being injured by the mechanism during subsequent operations and improving safety. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the door in the closed state according to an embodiment of the present invention.

[0025] Figure 2 This is a three-dimensional structural diagram of a door opening via a door pushing mechanism according to an embodiment of the present invention.

[0026] Figure 3 This is a three-dimensional structural diagram of a door after it has been opened by the door pushing mechanism and then retracted into the household appliance, according to an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the disassembled assembly structure of the door pushing mechanism according to an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the disassembled assembly structure of the door pushing mechanism according to another embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the electrical connection between the control device, the door pushing mechanism, and the operating device in one embodiment of the present invention. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0031] See Figures 1-6 A door push control mechanism for a household appliance, wherein the household appliance 6 includes a door 1, and the household appliance 6 is provided with a door push mechanism 2 for pushing the door 1 to open, and a control device 3 for generating a door opening signal to trigger the door push mechanism 2 to extend and open the door 1.

[0032] By cooperating with the door pushing mechanism 2 and the control device 3, multiple ways to open the door 1 without manually pulling it are provided. The user generates a door opening signal through the control device 3, and the door pushing mechanism 2 automatically pushes the door 1 open. Compared with traditional mechanical door handles, this design eliminates the need for the user to directly pull the door handle to open the door 1. The control device 3 can integrate interaction methods such as knocking, touch, or voice control. This design avoids the need to install a door handle on the door 1 of the household appliance 6.

[0033] The household appliance 6 is equipped with a control device 4 for receiving corresponding electrical signals to control the door pushing mechanism 2 to extend or retract. The door pushing mechanism 2 and the control device 3 are respectively electrically connected to the control device 4.

[0034] The extension and retraction of the door pushing mechanism 2 can be precisely controlled by electrical signals, further enhancing the intelligence level of door 1 opening. The control device 4 is electrically connected to both the door pushing mechanism 2 and the control device 3. The control device 4 can respond quickly to signals from the control device 3 and coordinate the actions of the door pushing mechanism 2. The retraction function of the door pushing mechanism 2 is centrally managed by the control device 4, ensuring that the mechanism retracts promptly after pushing, preventing users from being injured by the extended door pushing mechanism 2 when using household appliances 6, thus improving safety.

[0035] The door pushing mechanism 2 includes a push rod 2.1 and a driver 2.2 electrically connected to the control device 4. The driver 2.2 is provided with a drive shaft that is directly or indirectly connected to the push rod 2.1.

[0036] The drive shaft is configured to rotate or extend axially on the driver 2.2.

[0037] The door pushing mechanism 2 adopts a combination design of push rod 2.1 and driver 2.2. The drive shaft of driver 2.2 can be directly or indirectly connected to push rod 2.1, so that push rod 2.1 can directly perform axial extension and retraction movement or convert the rotational movement of drive shaft into axial extension and retraction movement of push rod 2.1.

[0038] The push rod 2.1 and the driver 2.2 with a drive shaft are arranged along the length of the door pushing mechanism 2 on the door pushing mechanism 2, and the drive shafts of the push rod 2.1 and the driver 2.2 are coaxial with each other.

[0039] The drive shafts of push rod 2.1 and driver 2.2 are arranged coaxially along the length of door pushing mechanism 2, making the overall structure more compact and easier to install in the limited space of household appliance 6.

[0040] In this embodiment, the door pushing mechanism 2 includes a housing 2.3. The housing 2.3 has an electrical cavity for limiting the installation of the driver 2.2 and an assembly cavity for limiting the installation of the push rod 2.1. The assembly cavity is provided with a limiting block to limit the stroke of the push rod 2.1 to extend outward or retract.

[0041] In this embodiment, when the push rod 2.1 is directly connected to the drive shaft of the driver 2.2, the push rod 2.1 is provided with a notch, and the drive shaft is provided with a ring that limits the movement inside the notch. One side of the notch has a U-shaped cross-section. When the push rod 2.1 is directly connected to the drive shaft of the driver 2.2, the push rod 2.1 performs axial telescopic movement, and the driver 2.2 is a motor.

[0042] The driver 2.2 is provided with a rotating drive shaft, and a screw and nut transmission assembly 7 is provided between the drive shaft and the push rod 2.1. The drive shaft and the push rod 2.1 are indirectly connected through the screw and nut transmission assembly 7.

[0043] The rotary motion of the driver 2.2 is converted into the linear motion of the push rod 2.1 through the screw-nut transmission assembly 7, achieving high-precision and high-force pushing of the door 1. The threaded transmission between the screw 7.2 and the nut 7.1 has a self-locking characteristic, which can maintain a stable state after the door 1 is opened and prevent accidental retraction. At the same time, the screw-nut transmission assembly 7 has high mechanical efficiency and fast response speed, and can generate a large thrust with a small driving force.

[0044] In this embodiment, a gear reduction mechanism is provided between the screw 7.2 and the drive shaft.

[0045] The screw and nut transmission assembly 7 includes a screw 7.2 connected to the drive shaft, a transmission component 7.3 connected to the push rod 2.1, and a nut 7.1 disposed at one end of the transmission component 7.3. The nut 7.1 is threadedly connected to the screw 7.2, and the nut 7.1 and the transmission component 7.3 are integrally formed and constitute an inseparable whole; or, the nut 7.1 and the transmission component 7.3 are separately connected.

[0046] The screw and nut drive assembly 7 can be designed as a separate unit or a single piece, providing flexible assembly options. The single-piece nut 7.1 and drive component 7.3 offer higher structural strength and are suitable for high-load applications; the separate design facilitates maintenance or replacement of damaged parts.

[0047] In this embodiment, the door pushing mechanism 2 is located at the opening and closing point between the door 1 and the body of the household appliance 6, and the housing 2.3 of the door pushing mechanism 2 is fixed to the body of the household appliance 6.

[0048] When the drive shaft rotates, it is converted into linear motion of the push rod 2.1 through threaded transmission. When the push rod 2.1 extends, its axial extension can directly push the door 1 open. The high-precision control of the driver 2.2 ensures the smoothness and reliability of the push rod 2.1's movement.

[0049] The household appliance 6 is equipped with a door status detector 5;

[0050] The door status detector 5 is used to detect whether the opening position of the door 1 has reached a preset threshold and is electrically connected to the control device 4.

[0051] When the door 1 is opened by the door pushing mechanism 2 and opened to a preset threshold under the action of external force, the control device 4 is triggered to control the door pushing mechanism 2 to perform a reset action, and the door pushing mechanism 2 retracts into the household appliance 6.

[0052] The door status detector 5 detects the opening position of the door 1, and the control device 4 can trigger the door pushing mechanism 2 to reset when the door 1 reaches a preset threshold. This design ensures that after the user manually pulls the door 1 open to a certain angle, the door pushing mechanism 2 can automatically retract, avoiding the risk of the mechanism being exposed and interfering with the user's operation or causing a collision.

[0053] In this embodiment, the household appliance 6 includes a body that is hinged to the door 1, and the door pushing mechanism 2 is disposed at the opening and closing point between the door 1 and the body.

[0054] In this embodiment, the door status detector 5 is a tilt detection element. Hinges are provided between the lower two sides of the door 1 and the machine body. When the door 1 is opened, the door 1 flips downward and tilts onto the machine body.

[0055] In this embodiment, the door status detector 5 (such as a Hall sensor or rotary encoder) monitors the opening angle of the door 1 in real time. When the door status detector 5 detects that the opening angle of the door 1 exceeds the preset angle threshold in the control program, the door status detector 5 immediately feeds back to the display controller of the control device 4, triggering the door pushing mechanism 2 to reset. This technology achieves high-precision dynamic detection, ensuring the synchronization between the user's door-pulling action and the mechanism's reset, preventing the door pushing mechanism 2 from retracting too early or too late. The door status detector 5 can be integrated into the door hinge or housing, is unaffected by moisture or oil, has a long lifespan, and requires no frequent calibration. Compared to traditional mechanical switches, the electronic door status detector 5 has a lower false alarm rate, making it particularly suitable for humid environments (such as dishwashers).

[0056] Rotary encoder principle: It can be installed at the hinge shaft and detects the angular displacement of the door body 1 during rotation. Types: Photoelectric encoder: High precision (e.g., 1000 pulses / revolution), but requires protection from dirt (oil stains affect the optical components). Magnetic encoder: Based on the Hall effect (e.g., AS5048A), resistant to dirt, suitable for kitchen environments.

[0057] The Hall sensor is combined with a magnet. The magnet is installed on the door body 1, and the Hall sensor is fixed in the machine body. The angle is detected by changes in the magnetic field. Technical advantages: non-contact detection, no mechanical wear, linear Hall sensor can output continuous angle, and switch-type Hall sensor can set a critical point.

[0058] The household appliance 6 is equipped with a timer 8;

[0059] The timer 8 is used to detect when the door 1 is opened by the door pushing mechanism 2 for a preset time and is electrically connected to the control device 4.

[0060] When the door 1 is opened by the door pushing mechanism 2 and no operation command is detected within a predetermined time, the control device 4 is triggered to control the door pushing mechanism 2 to perform a reset action, and the door pushing mechanism 2 retracts into the household appliance 6.

[0061] The introduction of timer 8 allows the door pushing mechanism 2 to automatically retract if no user operation is detected within a predetermined time, preventing the door pushing mechanism 2 from being exposed for extended periods. For example, if the user does not continue operating after the door 1 is opened, the control device 4 will trigger the door pushing mechanism 2 to reset. To prevent accidental opening of the door 1, this design can be combined with a spring-loaded latch between the door pushing mechanism 2 and the door 1. That is, after the door pushing mechanism 2 pushes open the door 1, the door 1 has not yet disengaged from the latch of the door pushing mechanism 2. If the door 1 is accidentally opened, the door pushing mechanism 2 resets, causing the door 1 to move in the closing direction, and the door 1 closes again.

[0062] The control device 3 includes any two or one of the following: a tapping module, a touch module, a voice control module, and a communication module;

[0063] The control device 4 includes a display controller, and the control device 3 is mounted on the display controller and electrically connected to the display controller.

[0064] The control device 3 supports multiple interaction methods, including tapping, touch, voice control, and communication modules, allowing users to choose the most convenient opening method according to their preferences. For example, the tapping module allows users to lightly tap the door 1 to trigger opening, while the voice control module allows operation via voice commands. The communication module supports remote control, enabling users to control the door remotely via a control terminal, using communication modules such as Bluetooth or WiFi. The display controller of the control device 4 can be integrated with the control device 3, providing an intuitive operating interface, allowing users to operate via touch control display. These diverse opening methods not only enhance convenience but also further reduce reliance on physical door handles.

[0065] The control device 4 includes a display controller and a main controller, the display controller and the main controller are electrically connected, and the main controller is electrically connected to the door pushing mechanism 2;

[0066] The household appliance 6 is a dishwasher, oven, microwave oven, sterilizer, or refrigerator.

[0067] The control device 4 employs a hierarchical design with a display controller and a main controller. The display controller handles user interaction, while the main controller is dedicated to controlling the door pushing mechanism 2, improving system response speed and reliability. The household appliance 6 can be a dishwasher, oven, microwave oven, etc., making this design widely applicable to various devices requiring a sealed door 1. The main controller ensures that the door pushing mechanism 2 retracts promptly after opening, avoiding interference with user operation or potential safety hazards. The hierarchical architecture also facilitates functional expansion, such as future upgrades to gesture control or artificial intelligence interaction.

[0068] In this embodiment, the display controller and the main controller are generally located inside the door body 1, and the display screen corresponding to the display controller is provided with an opening slot on the outer surface of the door body 1.

[0069] Both the display controller and the main controller are equipped with an MCU that is electrically connected to the corresponding modules or electrical components.

[0070] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A door pushing control mechanism for a household appliance, the household appliance (6) comprising a door (1), characterized in that: The household appliance (6) is provided with a door pushing mechanism (2) for pushing the door (1) to open, and a control device (3) for generating a door opening signal to trigger the door pushing mechanism (2) to extend and open the door (1).

2. The door pushing control mechanism of the household appliance according to claim 1, characterized in that: The household appliance (6) is equipped with a control device (4) for receiving corresponding electrical signals to control the door pushing mechanism (2) to extend or retract. The door pushing mechanism (2) and the control device (3) are electrically connected to the control device (4) respectively.

3. The door push control mechanism of the household appliance according to claim 2, characterized in that: The door pushing mechanism (2) includes a push rod (2.1) and a driver (2.2) electrically connected to the control device (4). The driver (2.2) is provided with a drive shaft that is directly or indirectly connected to the push rod (2.1). The drive shaft is configured to rotate or extend axially on the driver (2.2).

4. The door pushing control mechanism of the household appliance according to claim 3, characterized in that: The push rod (2.1) and the driver (2.2) with a drive shaft are arranged along the length of the door pushing mechanism (2) on the door pushing mechanism (2); the drive shafts of the push rod (2.1) and the driver (2.2) are coaxial with each other.

5. The door push control mechanism of the household appliance according to claim 3, characterized in that: The driver (2.2) is provided with a rotating drive shaft, and a screw and nut transmission assembly (7) is provided between the drive shaft and the push rod (2.1). The drive shaft and the push rod (2.1) are indirectly connected through the screw and nut transmission assembly (7).

6. The door push control mechanism of the household appliance according to claim 5, characterized in that: The screw and nut transmission assembly (7) includes a screw (7.2) connected to the drive shaft, a transmission component (7.3) connected to the push rod (2.1), and a nut (7.1) disposed at one end of the transmission component (7.3). The nut (7.1) is threadedly connected to the screw (7.2), and the nut (7.1) and the transmission component (7.3) are integrally formed and constitute an inseparable whole; or, the nut (7.1) and the transmission component (7.3) are separately connected.

7. The door push control mechanism of the household appliance according to claim 2, characterized in that: The household appliance (6) is equipped with a door status detector (5); The door status detector (5) is used to detect whether the door (1) has reached a preset threshold and is electrically connected to the control device (4); When the door (1) is opened by the door pushing mechanism (2) and opened to a preset threshold under the action of external force, the control device (4) is triggered to control the door pushing mechanism (2) to perform a reset action, and the door pushing mechanism (2) retracts into the household appliance (6).

8. The door push control mechanism of the household appliance according to claim 2, characterized in that: The household appliance (6) is equipped with a timer (8); The timer (8) is used to detect when the door (1) has been opened by the door pushing mechanism (2) for a preset time and is electrically connected to the control device (4); When the door (1) is opened by the door pushing mechanism (2) and no operation command is detected within a predetermined time, the control device (4) is triggered to control the door pushing mechanism (2) to perform a reset action, and the door pushing mechanism (2) retracts into the household appliance (6).

9. The door push control mechanism of the household appliance according to claim 2, characterized in that: The control device (3) includes any two or one of the following: a tapping module, a touch module, a voice control module, and a communication module; The control device (4) includes a display controller, and the control device (3) is mounted on the display controller and electrically connected to the display controller.

10. The door push control mechanism of the household appliance according to claim 2, characterized in that: The control device (4) includes a display controller and a main controller, the display controller and the main controller are electrically connected, and the main controller is electrically connected to the door pushing mechanism (2); The household appliance (6) is a dishwasher, oven, microwave oven, sterilizer, or refrigerator.

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